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  • Artikel  (143)
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  • 1
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    Identification of specific transducin alpha subunits in retinal rod and cone photoreceptors (1986)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1986-10-03
    Beschreibung: Transducin is a guanyl nucleotide-binding protein that couples rhodopsin photolysis to hydrolysis of guanosine 3',5'-monophosphate in rod photoreceptor cells of vertebrate retinas. Several complementary DNA clones encoding transducin subunits have recently been characterized. One clone, isolated from a bovine retina complementary DNA library, encodes a previously unidentified polypeptide with an amino acid sequence 78% identical to the sequence of the alpha subunit of bovine rod outer segment transducin. Antibodies to a synthetic peptide with amino acid sequence derived specifically from this novel polypeptide recognize a 41-kilodalton polypeptide in homogenates of bovine retina. Localization of this polypeptide in bovine retina by indirect immunofluorescence demonstrates that it is expressed only in cone outer segments. Antibodies to specific sequences found only in the rod transducin alpha subunit recognize a polypeptide localized only in the rod outer segment. Therefore, bovine rod and cone cells each express structurally related yet significantly different forms of transducin.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lerea, C L -- Somers, D E -- Hurley, J B -- Klock, I B -- Bunt-Milam, A H -- EYO 1311/EY/NEI NIH HHS/ -- EYO 1730/EY/NEI NIH HHS/ -- New York, N.Y. -- Science. 1986 Oct 3;234(4772):77-80.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3529395" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Base Sequence ; Cattle ; DNA/genetics ; Fluorescent Antibody Technique ; Membrane Proteins/genetics/*physiology ; Photoreceptor Cells/*metabolism ; Transducin
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 2
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    Lipoprotein mutations in pigs are associated with elevated plasma cholesterol and atherosclerosis (1986)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1986-12-19
    Beschreibung: A strain of pigs bearing three immunogenetically defined lipoprotein-associated markers (allotypes), designated Lpb5, Lpr1, and Lpu1, has marked hypercholesterolemia on a low fat, cholesterol-free diet. Unlike individuals with familial hypercholesterolemia or WHHL rabbits, the affected pigs have normal low density lipoprotein receptor activity. The animals, by 7 months of age, have extensive atherosclerotic lesions in all three coronary arteries. This strain of pig represents an animal model for atherosclerosis and hypercholesterolemia associated with mutations affecting the structures of plasma lipoproteins. One of the variant apolipoproteins, Lpb5, is apolipoprotein-B. A second variant apolipoprotein (Lpr1), termed apo-R, is a 23-kilodalton protein present in both the very low density (d less than 1.006 g/ml) and the very high density (d greater than 1.21 g/ml) fractions of pig plasma. Isoforms of this protein correlate with two Lpr alleles, Lpr1 and Lpr2. The Lpr genes segregate independently of the Lpb5 and Lpu1 alleles. The Lpu1 allotype is a component of low density lipoprotein and is genetically linked to Lpb5.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Rapacz, J -- Hasler-Rapacz, J -- Taylor, K M -- Checovich, W J -- Attie, A D -- AG05-856/AG/NIA NIH HHS/ -- HL30594/HL/NHLBI NIH HHS/ -- New York, N.Y. -- Science. 1986 Dec 19;234(4783):1573-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3787263" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Alleles ; Animals ; Apolipoproteins B/genetics ; Arteriosclerosis/blood/*genetics ; Cholesterol/blood ; *Disease Models, Animal ; Female ; Genotype ; Hypercholesterolemia/blood/*genetics ; Immunologic Tests ; Lipoproteins/blood/*genetics ; Lipoproteins, LDL/blood/genetics ; Lipoproteins, VLDL/blood/genetics ; Male ; Mutation ; Receptors, LDL/metabolism ; Swine
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 3
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    Structural heterogeneity and functional domains of murine immunoglobulin G Fc receptors (1986)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1986-11-07
    Beschreibung: Binding of antibodies to effector cells by way of receptors to their constant regions (Fc receptors) is central to the pathway that leads to clearance of antigens by the immune system. The structure and function of this important class of receptors on immune cells is addressed through the molecular characterization of Fc receptors (FcR) specific for the murine immunoglobulin G isotype. Structural diversity is encoded by two genes that by alternative splicing result in expression of molecules with highly conserved extracellular domains and different transmembrane and intracytoplasmic domains. The proteins encoded by these genes are members of the immunoglobulin supergene family, most homologous to the major histocompatibility complex molecule E beta. Functional reconstitution of ligand binding by transfection of individual FcR genes demonstrates that the requirements for ligand binding are encoded in a single gene. These studies demonstrate the molecular basis for the functional heterogeneity of FcR's, accounting for the possible transduction of different signals in response to a single ligand.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Ravetch, J V -- Luster, A D -- Weinshank, R -- Kochan, J -- Pavlovec, A -- Portnoy, D A -- Hulmes, J -- Pan, Y C -- Unkeless, J C -- AI 24322/AI/NIAID NIH HHS/ -- GM 36306/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1986 Nov 7;234(4777):718-25.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2946078" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Amino Acid Sequence ; Animals ; Base Sequence ; DNA/genetics ; Gene Expression Regulation ; Histocompatibility Antigens Class II/genetics ; Immunoglobulin G ; Lymphocytes/*physiology ; Macrophages/*physiology ; Membrane Proteins ; Mice ; Protein Conformation ; *Receptors, Fc/genetics ; Receptors, IgG ; Transcription, Genetic ; Transfection
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 4
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    Tandem duplication of D-loop and ribosomal RNA sequences in lizard mitochondrial DNA (1986)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1986-09-26
    Beschreibung: Some Cnemidophorus exsanguis have mitochondrial DNA's (mtDNA's) that are 22.2 kilobases (kb) in size, whereas most have mtDNA's of 17.4 kb. Restriction site mapping, DNA transfer hybridization experiments, and electron microscopy show that the size increment stems from the tandem duplication of a 4.8-kb region that includes regulatory sequences and transfer and ribosomal RNA genes. This observation is notable in that sequences outside of the control region are involved in major length variation. Besides revealing a novel form of mtDNA evolution in animals, these duplications provide a useful system for investigating the molecular and evolutionary biology of animal mtDNA.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Moritz, C -- Brown, W M -- GM30144/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1986 Sep 26;233(4771):1425-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3018925" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Base Sequence ; DNA Restriction Enzymes ; DNA, Mitochondrial/*genetics ; Lizards ; Microscopy, Electron ; Nucleic Acid Conformation ; Nucleic Acid Hybridization ; RNA, Ribosomal/*genetics ; Repetitive Sequences, Nucleic Acid
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 5
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    Equine infectious anemia virus gag and pol genes: relatedness to visna and AIDS virus (1986)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1986-02-07
    Beschreibung: Comparison of HTLV-III, the putative AIDS virus, with other related viruses, may help to reveal more about the origin of AIDS in humans. In this study, the nucleotide sequence of the gag and pol genes of an equine infectious anemia virus (EIAV) proviral DNA clone was determined. The sequence was compared with that of HTLV-III and of visna, a pathogenic lentivirus of sheep. The results show that these viruses constitute a family clearly distinct from that of the type C viruses or the BLV-HTLV-I and -II group. Within the family, EIAV, HTLV-III, and visna appear to be equally divergent from a common evolutionary ancestor.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Stephens, R M -- Casey, J W -- Rice, N R -- N0I-C-23909/PHS HHS/ -- New York, N.Y. -- Science. 1986 Feb 7;231(4738):589-94.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3003905" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Base Sequence ; Codon ; DNA, Viral/genetics ; Deltaretrovirus/*genetics ; *Genes, Viral ; Horses ; Humans ; Infectious Anemia Virus, Equine/*genetics ; Mice ; Visna-maedi virus/*genetics
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 6
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    Detection of papillomavirus DNA in human semen (1986)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1986-02-14
    Beschreibung: Human papillomavirus DNA has been detected in the semen of three patients, two of whom have severe chronic wart disease. These data support the contention that sexual transmission of human papillomavirus DNA could occur via semen, a possibility suggested by epidemiological data on the sexual transmission of human papillomavirus.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Ostrow, R S -- Zachow, K R -- Niimura, M -- Okagaki, T -- Muller, S -- Bender, M -- Faras, A J -- CA 25462/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1986 Feb 14;231(4739):731-3.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3003908" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): DNA, Viral/analysis ; Humans ; Male ; Papillomaviridae/*isolation & purification ; Semen/*microbiology ; Tumor Virus Infections/*microbiology/transmission ; Warts/*microbiology/transmission
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 7
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    Identification and characterization of the protein encoded by the human N-myc oncogene (1986)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1986-05-09
    Beschreibung: The human N-myc gene is related to the c-myc proto-oncogene, and has been shown to have transforming potential in vitro. Many studies have reported amplification of N-myc in human neuroblastoma and retinoblastoma cell lines. In primary tumors, amplification of the gene was found to correlate directly with behavior of the tumor. Specific restriction fragments of a partial complementary DNA clone of N-myc from LA-N-5 human neuroblastoma cells were placed into a bacterial expression vector for the purpose of producing antigens representative of the N-myc protein. Rabbits immunized with these antigens produced antisera that recognized a protein of 62-64 kilodaltons in neuroblastoma cells. By several criteria, this protein appears to be part of the same proto-oncogene family as the c-myc protein. Moreover, the antisera to fragments of this protein were capable of histochemically identifying malignant cells in clinical specimens.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Slamon, D J -- Boone, T C -- Seeger, R C -- Keith, D E -- Chazin, V -- Lee, H C -- Souza, L M -- CA 16042/CA/NCI NIH HHS/ -- CA 36827/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1986 May 9;232(4751):768-72.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3008339" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Base Sequence ; Carcinoma, Small Cell/metabolism ; Immune Sera/immunology ; Immunoenzyme Techniques ; Leukemia, Myeloid, Acute/metabolism ; Lung Neoplasms/metabolism ; Neoplasm Proteins/genetics/*isolation & purification/physiology ; Neuroblastoma/metabolism ; *Oncogenes ; Proto-Oncogene Proteins/genetics/*isolation & purification/physiology ; Proto-Oncogene Proteins c-myc ; Proto-Oncogenes ; Rabbits/immunology
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 8
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    Calcium antagonist receptors in cardiomyopathic hamster: selective increases in heart, muscle, brain (1986)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1986-04-25
    Beschreibung: The Syrian cardiomyopathic hamster has a hereditary disease in which a progressive myocardial necrosis mimics human forms of cardiac hypertrophy. Lesions are associated with calcium overload and can be prevented with the calcium antagonist verapamil. Numbers of receptor binding sites for calcium antagonists in heart, brain, skeletal muscle, and smooth muscle were markedly increased in cardiomyopathic hamsters. The uptake of calcium-45 into brain synaptosomes was also increased in cardiomyopathic hamsters. The increase in calcium antagonist receptors and related voltage-sensitive calcium channels may be involved in the pathogenesis of this cardiomyopathy.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Wagner, J A -- Reynolds, I J -- Weisman, H F -- Dudeck, P -- Weisfeldt, M L -- Snyder, S H -- HL-17655/HL/NHLBI NIH HHS/ -- MH-18501/MH/NIMH NIH HHS/ -- NS-16375/NS/NINDS NIH HHS/ -- etc. -- New York, N.Y. -- Science. 1986 Apr 25;232(4749):515-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3008330" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Brain/metabolism/physiopathology ; *Brain Chemistry ; Calcium/metabolism ; Calcium Channels ; Cardiomyopathy, Hypertrophic/*physiopathology ; Cricetinae ; Disease Models, Animal ; Female ; Heart/physiopathology ; Male ; Mesocricetus ; Muscle, Smooth/analysis/metabolism ; Muscles/*analysis/metabolism/physiopathology ; Myocardium/*analysis/metabolism ; Nifedipine/analogs & derivatives/metabolism ; Nitrendipine ; Receptors, Nicotinic/*analysis/metabolism/physiology ; Synaptosomes/metabolism ; Verapamil/metabolism
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 9
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    The 35-nucleotide spliced leader sequence is common to all trypanosome messenger RNA's (1986)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1986-08-01
    Beschreibung: In Trypanosomatidae the messenger RNA's (mRNA's) that code for the variant surface glycoproteins (VSG's), tubulins, calmodulin, and at least a subset of other proteins contain a common 35-nucleotide leader sequence at their 5' ends. Hybrid-arrested in vitro translation has been used to show that all mRNA's in both African and South American trypanosomes contain this 35-nucleotide sequence. Oligonucleotides complementary to this sequence blocked translation of all trypanosome mRNA's in a rabbit reticulocyte lysate system, but did not inhibit translation of mRNA's from other organisms lacking this sequence. An oligonucleotide complementary to the VSG mRNA downstream from the spliced leader sequence arrested only VSG synthesis. Thus, the 35-nucleotide leader sequence is a general feature of all trypanosome mRNA's. The high specificity of oligonucleotides complementary to the spliced leader for their target sequence suggests that analogues permeable to the cell membrane may be useful in the treatment of trypanosomal infections.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Walder, J A -- Eder, P S -- Engman, D M -- Brentano, S T -- Walder, R Y -- Knutzon, D S -- Dorfman, D M -- Donelson, J E -- AI-18954/AI/NIAID NIH HHS/ -- AM-25295/AM/NIADDK NIH HHS/ -- HL-33555/HL/NHLBI NIH HHS/ -- etc. -- New York, N.Y. -- Science. 1986 Aug 1;233(4763):569-71.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3523758" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Base Sequence ; Protein Biosynthesis ; Protein Sorting Signals/*genetics ; RNA, Messenger/*genetics ; Trypanosoma/*genetics ; Trypanosoma brucei brucei/genetics ; Trypanosoma cruzi/genetics
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 10
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    Deletion in cysteine-rich region of LDL receptor impedes transport to cell surface in WHHL rabbit (1986)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1986-06-06
    Beschreibung: The Watanabe heritable hyperlipidemic (WHHL) rabbit, an animal with familial hypercholesterolemia, produces a mutant receptor for plasma low-density lipoprotein (LDL) that is not transported to the cell surface at a normal rate. Cloning and sequencing of complementary DNA's from normal and WHHL rabbits, shows that this defect arises from an in-frame deletion of 12 nucleotides that eliminates four amino acids from the cysteine-rich ligand binding domain of the LDL receptor. A similar mutation, detected by S1 nuclease mapping of LDL receptor messenger RNA, occurred in a patient with familial hypercholesterolemia whose receptor also fails to be transported to the cell surface. These findings suggest that animal cells may have fail-safe mechanisms that prevent the surface expression of improperly folded proteins with unpaired or improperly bonded cysteine residues.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4451858/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4451858/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Yamamoto, T -- Bishop, R W -- Brown, M S -- Goldstein, J L -- Russell, D W -- HL 01287/HL/NHLBI NIH HHS/ -- HL 20948/HL/NHLBI NIH HHS/ -- HL 31346/HL/NHLBI NIH HHS/ -- P01 HL020948/HL/NHLBI NIH HHS/ -- New York, N.Y. -- Science. 1986 Jun 6;232(4755):1230-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3010466" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Amino Acid Sequence ; Animals ; Base Sequence ; Biological Transport ; *Chromosome Deletion ; Cloning, Molecular ; Cysteine/genetics ; Dna ; DNA Restriction Enzymes ; Genes ; Humans ; Hyperlipoproteinemia Type II/*genetics ; Mutation ; RNA, Messenger ; Rabbits ; Receptors, LDL/*genetics
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 11
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    Activation of mouse T-helper cells induces abundant preproenkephalin mRNA synthesis (1986)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1986-05-09
    Beschreibung: Antigenic or mitogenic stimulation of T cells induces the secretion of an array of protein hormones that regulate immune responses. Molecular cloning has contributed strongly to our present understanding of the nature of this regulation. A complementary DNA (cDNA) library prepared from a cloned concanavalin A-activated mouse T-helper cell line was screened for abundant and induction-specific cDNA's. One such randomly chosen cDNA was found to encode mouse preproenkephalin messenger RNA (mRNA). Preproenkephalin mRNA represented about 0.4 percent of the mRNA in the activated cell line but was absent in resting cells of this line. Other induced T-helper cell lines have 0.1 to 0.5 percent of their mRNA as preproenkephalin mRNA. Induced T-helper cell culture supernatants have [Met]enkephalin-immunoreactive material. The production by activated T cells of a peptide neurotransmitter identifies a signal that can potentially permit T cells to modulate the nervous system.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Zurawski, G -- Benedik, M -- Kamb, B J -- Abrams, J S -- Zurawski, S M -- Lee, F D -- New York, N.Y. -- Science. 1986 May 9;232(4751):772-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2938259" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Base Sequence ; Cattle ; Cell Line ; Cloning, Molecular ; DNA/genetics ; Enkephalins/*biosynthesis/genetics ; Humans ; *Lymphocyte Activation ; Mice ; Protein Precursors/*biosynthesis/genetics ; RNA, Messenger/*biosynthesis ; Rats ; T-Lymphocytes, Helper-Inducer/drug effects/metabolism/*physiology
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 12
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    Chromosome Y-specific DNA is transferred to the short arm of X chromosome in human XX males (1986)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1986-08-15
    Beschreibung: Y-chromosomal DNA is present in the genomes of most human XX males. In these cases, maleness is probably due to the presence of the Y-encoded testis-determining factor (TDF). By means of in situ hybridization of a probe (pDP105) detecting Y-specific DNA to metaphases from three XX males, it was demonstrated that the Y DNA is located on the tip of the short arm of an X chromosome. This finding supports the hypothesis that XX maleness is frequently the result of transfer of Y DNA, including TDF, to a paternally derived X chromosome.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Andersson, M -- Page, D C -- de la Chapelle, A -- New York, N.Y. -- Science. 1986 Aug 15;233(4765):786-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3738510" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Cells, Cultured ; Chromosome Mapping ; DNA/*genetics ; Humans ; Lymphocyte Activation ; Lymphocytes/cytology ; Male ; Metaphase ; Nucleic Acid Hybridization ; *Sex Chromosome Aberrations ; Sex Determination Analysis ; *X Chromosome ; *Y Chromosome
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 13
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    Brain architecture: beyond genes (1986)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1986-07-11
    Beschreibung: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Barnes, D M -- New York, N.Y. -- Science. 1986 Jul 11;233(4760):155-6.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3726526" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Brain/*anatomy & histology/growth & development ; Chickens ; Genes ; Humans ; Language Development ; Male ; Neurons/physiology ; Rats ; Synapses/physiology ; Visual Cortex/anatomy & histology/physiology
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    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 14
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    Human beta-adrenoceptors: relation of myocardial and lymphocyte beta-adrenoceptor density (1986)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1986-03-28
    Beschreibung: In human right atria obtained from 21 patients during open-heart surgery, beta-adrenoceptor density [assessed by iodine-125-labeled (-)-cyanopindolol binding] and responsiveness (positive inotropic responses to isoprenaline) were linearly related to the beta-adrenoceptor density in the corresponding circulating lymphocytes. This direct relation of human myocardial and lymphocyte beta-adrenoceptor alterations, therefore, makes it possible to monitor drug- or disease-induced beta-adrenoceptor changes in tissues not easily accessible in humans.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Brodde, O E -- Kretsch, R -- Ikezono, K -- Zerkowski, H R -- Reidemeister, J C -- New York, N.Y. -- Science. 1986 Mar 28;231(4745):1584-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3006250" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Female ; Heart Atria ; Humans ; In Vitro Techniques ; Isoproterenol/pharmacology ; Lymphocytes/*metabolism ; Male ; Middle Aged ; Myocardial Contraction/drug effects ; Myocardium/*metabolism ; Receptors, Adrenergic, beta/*metabolism
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 15
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    Aminoguanidine prevents diabetes-induced arterial wall protein cross-linking (1986)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1986-06-27
    Beschreibung: Age-associated increases in collagen cross-linking and accumulation of advanced glycosylation products are both accelerated by diabetes, suggesting that glucose-derived cross-link formation may contribute to the development of chronic diabetic complications as well as certain physical changes of aging. Aminoguanidine, a nucleophilic hydrazine compound, prevented both the formation of fluorescent advanced nonenzymatic glycosylation products and the formation of glucose-derived collagen cross-links in vitro. Aminoguanidine administration to rats was equally effective in preventing diabetes-induced formation of fluorescent advanced nonenzymatic glycosylation products and cross-linking of arterial wall connective tissue protein in vivo. The identification of aminoguanidine as an inhibitor of advanced nonenzymatic glycosylation product formation now makes possible precise experimental definition of the pathogenetic significance of this process and suggests a potential clinical role for aminoguanidine in the future treatment of chronic diabetic complications.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Brownlee, M -- Vlassara, H -- Kooney, A -- Ulrich, P -- Cerami, A -- AM 19655/AM/NIADDK NIH HHS/ -- R01-AM 33861/AM/NIADDK NIH HHS/ -- New York, N.Y. -- Science. 1986 Jun 27;232(4758):1629-32.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3487117" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Arteries/*drug effects/metabolism ; Collagen/metabolism ; Connective Tissue/drug effects/metabolism ; Diabetes Mellitus, Experimental/*drug therapy/metabolism ; Glucose/metabolism ; Guanidines/*pharmacology/therapeutic use ; Male ; Rats ; Rats, Inbred Lew ; Serum Albumin, Bovine/metabolism
    Print ISSN: 0036-8075
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 16
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    T-cell recognition of Ia molecules selectively altered by a single amino acid substitution (1986)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1986-01-17
    Beschreibung: T lymphocytes recognize foreign antigen together with allele-specific determinants on membrane-bound class I and class II (Ia) gene products of the major histocompatibility complex. To identify amino acids of class II molecules critical to this recognition process, the genes encoding the beta chains of the I-Ak molecule were cloned from a wild-type B-cell hybridoma and from an immunoselected variant subline showing distinct serological and T-cell stimulatory properties. Nucleotide sequencing and DNA-mediated gene transfer established that a single base transition (G----A) encoding a change from glutamic acid to lysine at position 67 in the I-Ak beta molecule accounted for all the observed phenotypic changes of the variant cells. These results confirm the importance of residues 62 to 78 in the amino terminal domain of I-A beta for class II-restricted T-cell recognition of antigen and demonstrate the ability of a single substitution in this region to alter this recognition event.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Brown, M A -- Glimcher, L A -- Nielsen, E A -- Paul, W E -- Germain, R N -- New York, N.Y. -- Science. 1986 Jan 17;231(4735):255-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3484558" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Amino Acid Sequence ; Animals ; Antibodies, Monoclonal/genetics/immunology ; Base Sequence ; Cloning, Molecular ; Histocompatibility Antigens Class II/*immunology ; Humans ; Hybridomas/immunology ; Major Histocompatibility Complex ; Mice ; Mice, Inbred BALB C ; T-Lymphocytes/*immunology
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 17
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    Atrial natriuretic peptide elevation in congestive heart failure in the human (1986)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1986-03-07
    Beschreibung: A sensitive radioimmunoassay for atrial natriuretic peptide was used to examine the relation between circulating atrial natriuretic peptide and cardiac filling pressure in normal human subjects, in patients with cardiovascular disease and normal cardiac filling pressure, and in patients with cardiovascular disease and elevated cardiac filling pressure with and without congestive heart failure. The present studies establish a normal range for atrial natriuretic peptide in normal human subjects. These studies also establish that elevated cardiac filling pressure is associated with increased circulating concentrations of atrial natriuretic peptide and that congestive heart failure is not characterized by a deficiency in atrial natriuretic peptide, but with its elevation.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Burnett, J C Jr -- Kao, P C -- Hu, D C -- Heser, D W -- Heublein, D -- Granger, J P -- Opgenorth, T J -- Reeder, G S -- New York, N.Y. -- Science. 1986 Mar 7;231(4742):1145-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2935937" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Adult ; Aged ; Atrial Natriuretic Factor/*blood ; Cardiovascular Diseases/blood ; Female ; Heart Failure/*blood ; Hemodynamics ; Humans ; Male ; Middle Aged ; Radioimmunoassay
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 18
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    A yeast gene that is essential for release from glucose repression encodes a protein kinase (1986)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1986-09-12
    Beschreibung: The SNF1 gene plays a central role in carbon catabolite repression in the yeast Saccharomyces cerevisiae, namely that SNF1 function is required for expression of glucose-repressible genes. The nucleotide sequence of the cloned SNF1 gene was determined, and the predicted amino acid sequence shows that SNF1 encodes a 72,040-dalton polypeptide that has significant homology to the conserved catalytic domain of mammalian protein kinases. Specific antisera were prepared and used to identify the SNF1 protein. The protein was shown to transfer phosphate from adenosine triphosphate to serine and threonine residues in an in vitro autophosphorylation reaction. These findings indicate that SNF1 encodes a protein kinase and suggest that protein phosphorylation plays a critical role in regulation by carbon catabolite repression in eukaryotic cells.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Celenza, J L -- Carlson, M -- GM34095/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1986 Sep 12;233(4769):1175-80.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3526554" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Amino Acid Sequence ; Base Sequence ; Enzyme Repression ; Genes ; Glucose/*metabolism ; Phosphorylation ; Protein Kinases/biosynthesis/*genetics ; Saccharomyces cerevisiae/enzymology/*genetics
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 19
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    Plant glutamine synthetase complements a glnA mutation in Escherichia coli (1986)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1986-06-06
    Beschreibung: A glutamine synthetase gene from alfalfa (Medicago sativa) has been expressed in Escherichia coli after fusion of bacterial transcription and translation signals to a complete alfalfa glutamine synthetase coding sequence. Synthesis of the alfalfa glutamine synthetase enzyme in Escherichia coli was demonstrated by functional genetic complementation of a glutamine synthetase-deficient mutant and by immunoblotting analysis. These results should facilitate protein engineering and structure-function analysis of the plant enzyme.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉DasSarma, S -- Tischer, E -- Goodman, H M -- New York, N.Y. -- Science. 1986 Jun 6;232(4755):1242-4.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2871626" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Base Sequence ; *DNA, Recombinant ; Escherichia coli/*genetics ; Genes ; Genetic Complementation Test ; Glutamate-Ammonia Ligase/*genetics ; Medicago sativa/*genetics ; Molecular Weight ; Plasmids ; Promoter Regions, Genetic
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 20
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    Characterization of highly immunogenic p66/p51 as the reverse transcriptase of HTLV-III/LAV (1986)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1986-03-14
    Beschreibung: Approximately 80 percent of all human sera that react with antigens of HTLV-III, the etiologic agent of the acquired immune deficiency syndrome (AIDS), recognize protein bands at 66 and 51 kilodaltons. A mouse hybridoma was produced that was specific to these proteins. Repeated cloning of the hybridoma did not separate the two reactivities. The p66/p51 was purified from HTLV-III lysates by immunoaffinity chromatography and subjected to NH2-terminal Edman degradation. Single amino acid residues were obtained in 17 successive degradation cycles. The sequence determined was a perfect translation of the nucleotide sequence of a portion of the HTLV-III pol gene. The purified p66/51 had reverse transcriptase activity and the monoclonal immunoglobulin G specifically removed the enzyme activity from crude viral extract as well as purified enzyme.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉di Marzo Veronese, F -- Copeland, T D -- DeVico, A L -- Rahman, R -- Oroszlan, S -- Gallo, R C -- Sarngadharan, M G -- New York, N.Y. -- Science. 1986 Mar 14;231(4743):1289-91.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2418504" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Acquired Immunodeficiency Syndrome/immunology ; Animals ; Antibodies, Monoclonal ; Antigens, Viral/genetics/immunology/isolation & purification ; Base Sequence ; Chromatography, Affinity ; Deltaretrovirus/*enzymology/genetics/immunology ; Electrophoresis, Polyacrylamide Gel ; Genes, Viral ; Humans ; Hybridomas/immunology ; Mice ; Mice, Inbred BALB C ; RNA-Directed DNA Polymerase/genetics/*immunology/isolation & purification
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 21
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    Cloned fragment of the hepatitis delta virus RNA genome: sequence and diagnostic application (1986)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1986-05-16
    Beschreibung: Hepatitis delta virus (HDV) is a replication-defective etiological agent of hepatitis that requires hepatitis B virus (HBV) as a helper. A complementary DNA (cDNA) fragment of the RNA genome of HDV was cloned into the plasmid vector pBR322, and the primary nucleotide sequence and predicted protein products of the cDNA fragment were determined. This cloned cDNA fragment has been used as a sensitive radioactive probe for the detection of HDV RNA in the serum of patients with either acute or chronic HDV infections.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Denniston, K J -- Hoyer, B H -- Smedile, A -- Wells, F V -- Nelson, J -- Gerin, J L -- N01-AI-22665/AI/NIAID NIH HHS/ -- New York, N.Y. -- Science. 1986 May 16;232(4752):873-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3704630" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Base Sequence ; Cloning, Molecular ; Hepatitis D/*diagnosis/microbiology ; Hepatitis Delta Virus/*genetics ; Humans ; Nucleic Acid Hybridization ; Pan troglodytes ; RNA, Viral/*genetics
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 22
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    Perfumes and preference (1986)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1986-03-14
    Beschreibung: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Easton, T A -- New York, N.Y. -- Science. 1986 Mar 14;231(4743):1235.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3945820" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Female ; Homosexuality ; Humans ; Male ; *Perfume ; Rats ; *Sexual Behavior
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 23
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    Age-dependent changes in proteins of Drosophila melanogaster (1986)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1986-03-07
    Beschreibung: Several molecular theories of aging postulate that there are age-dependent changes in gene expression and that these changes contribute to the reduction in the viability of senescent cells. High-resolution, semiautomated, quantitative two-dimensional gel electrophoresis of many soluble proteins was used to test this hypothesis in Drosophila. Two-dimensional protein gel patterns were analyzed for each of three age groups of [(35)S]methionine-labeled adult male Drosophila melanogaster, which, except for their spermatocytes, consist entirely of fixed postmitotic cells. Seven relatively abundant polypeptides expressed in middle-aged (28-day-old) flies were absent in both young(10-day-old) and old (44-day-old) flies. Quantitative analyses of an additional 100 polypeptides were carried out by computer-assisted microdensitometry of fluorograms of the gel preparations. These analyses revealed a significant age-related heterogeneity in the quantitative distribution of radiolabel in these proteins. The data indicate that the qualitative pattern of gene expression is identical in young and old flies, but that profound quantitative changes occur in the expression of proteins during the Drosophila life-span.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Fleming, J E -- Quattrocki, E -- Latter, G -- Miquel, J -- Marcuson, R -- Zuckerkandl, E -- Bensch, K G -- New York, N.Y. -- Science. 1986 Mar 7;231(4742):1157-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3080809" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): *Aging ; Animals ; Drosophila melanogaster/*metabolism ; Electrophoresis ; Male ; Molecular Weight ; Proteins/*metabolism
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 24
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    Circulating atrial natriuretic peptides in conscious rats: regulation of release by multiple factors (1986)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1986-05-02
    Beschreibung: Cardiocytes in the atria contain a prohormone that gives rise to atrial natriuretic peptides (ANP's), which have intrinsic hemodynamic regulatory activity. The distribution of ANP's in the brain suggests the involvement of these peptides in central cardiovascular regulation. In conscious rats with chronic indwelling catheters, volume loading with isotonic saline or glucose increased the amount of circulating immunoreactive ANP's by a factor of 4 to 5, as determined by radioimmunoassay. Hyperosmotic challenge with a hypertonic NaCl solution or anesthesia with halothane caused similar increases in plasma ANP's. Results obtained with the denervated-heart preparation indicate that neuronal influences are important in the release of ANP's induced by volume loading. As judged from reversed-phase high-performance liquid chromatography of extracted plasma and radioimmunoassay of collected fractions, the circulating physiologically important ANP's in the conscious rodent appear to be alpha-rANP(5-28) (atriopeptin III) and either alpha-rANP(3-28) [ANF(8-33)] or alpha-rANP(1-28) (ANF).〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Eskay, R -- Zukowska-Grojec, Z -- Haass, M -- Dave, J R -- Zamir, N -- New York, N.Y. -- Science. 1986 May 2;232(4750):636-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2938258" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Anesthesia ; Animals ; Atrial Natriuretic Factor/blood/isolation & purification/physiology/*secretion ; Blood Volume ; Chromatography, High Pressure Liquid ; Consciousness/physiology ; Halothane/pharmacology ; Heart/innervation ; Heart Atria/drug effects/secretion ; Male ; Osmotic Pressure ; Pentobarbital/pharmacology ; Peptide Fragments/isolation & purification ; Radioimmunoassay ; Rats ; Rats, Inbred Strains
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 25
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    Deregulation of c-myc by translocation of the alpha-locus of the T-cell receptor in T-cell leukemias (1986)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1986-05-16
    Beschreibung: Two human T-cell leukemias carrying a t(8;14)(q24;q11) chromosome translocation were studied for rearrangements and expression of the c-myc oncogene. For one leukemia, rearrangement was detected in a region immediately distal (3') to the c-myc locus; no rearrangements of c-myc were observed in the second case (DeF). However, studies with hybrids between human and mouse leukemic T cells indicated that in the leukemic cells of DeF, the breakpoint in chromosome 14 occurred between genes for the variable (V alpha) and the constant (C alpha) regions for the alpha chain of the T-cell receptor. The C alpha locus had translocated to a region more than 38 kilobases 3' to the involved c-myc oncogene. Since human c-myc transcripts were expressed only in hybrids carrying the 8q+ chromosome but not in hybrids containing the normal chromosome 8, it is concluded that the translocation of the C alpha locus 3' to the c-myc oncogene can result in its transcriptional deregulation.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Erikson, J -- Finger, L -- Sun, L -- ar-Rushdi, A -- Nishikura, K -- Minowada, J -- Finan, J -- Emanuel, B S -- Nowell, P C -- Croce, C M -- CA10815/CA/NCI NIH HHS/ -- CA25875/CA/NCI NIH HHS/ -- CA39860/CA/NCI NIH HHS/ -- etc. -- New York, N.Y. -- Science. 1986 May 16;232(4752):884-6.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3486470" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Burkitt Lymphoma/genetics ; Chromosomes, Human, 13-15 ; Chromosomes, Human, 6-12 and X ; Humans ; Hybrid Cells ; Karyotyping ; Leukemia/*genetics ; Male ; Mice ; Middle Aged ; Nucleic Acid Hybridization ; *Oncogenes ; Receptors, Antigen, T-Cell/*genetics ; *T-Lymphocytes ; *Translocation, Genetic
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 26
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    The neuroendocrine thymus: coexistence of oxytocin and neurophysin in the human thymus (1986)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1986-04-25
    Beschreibung: Immunoreactive oxytocin and neurophysin were identified and measured by radioimmunoassay in human thymus extracts. Serial dilutions of extracts paralleled the appropriate standard curves. Thymus-extracted oxytocin and neurophysin eluted in the same positions as reference preparations on Sephadex G-75. Authenticity of oxytocin was confirmed by biological assay and high-performance liquid chromatography analysis. In most instances, thymus contents of oxytocin and neurophysin were far greater than those expected from known circulating concentrations and declined with increasing age. The molar ratio of oxytocin to neurophysin in thymus was similar to that found in the hypothalamo-neurohypophyseal system, which strongly suggested with the other data a local synthesis of oxytocin. These findings indicate the presence of neurohypophyseal peptides in the human thymus and further support the concept of a neuroendocrine function integrated in an immune structure.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Geenen, V -- Legros, J J -- Franchimont, P -- Baudrihaye, M -- Defresne, M P -- Boniver, J -- New York, N.Y. -- Science. 1986 Apr 25;232(4749):508-11.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3961493" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Adult ; Age Factors ; Child ; Chromatography, Gel ; Chromatography, High Pressure Liquid ; Female ; Humans ; Infant, Newborn ; Male ; Middle Aged ; Myasthenia Gravis/physiopathology ; Neurophysins/*analysis/isolation & purification/physiology ; Oxytocin/*analysis/isolation & purification/physiology ; Radioimmunoassay ; Thymus Gland/*analysis/physiology/physiopathology
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 27
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    Cloning of a cDNA for a T cell-specific serine protease from a cytotoxic T lymphocyte (1986)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1986-05-16
    Beschreibung: A new serine protease was encoded by a clone isolated from a murine cytotoxic T-lymphocyte complementary DNA library by an RNA-hybridization competition protocol. Complementary transcripts were detected in cytotoxic T lymphocytes, spleen cells from nude mice, a rat natural killer cell leukemia, and in two of eight T-helper clones (both cytotoxic), but not in normal mouse kidney, liver, spleen, or thymus, nor in several tested T- and B-cell tumors. T-cell activation with concanavalin A plus interleukin-2 induced spleen cells to express this gene with kinetics correlating with the acquisition of cytolytic capacity. The nucleotide sequence of this gene encoded an amino acid sequence of approximately 25,700 daltons, with 25 to 35 percent identity to members of the serine protease family. The active site "charge-relay" residues (His57, Asp102, and Ser195 of the chymotrypsin numbering system) are conserved, as well as the trypsin-specific Asp (position 189 in trypsin). A Southern blot analysis indicated that this gene is conserved in humans, mouse, and chicken. This serine protease may have a role in lymphocyte lysis and a "lytic cascade."〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Gershenfeld, H K -- Weissman, I L -- AI 19512/AI/NIAID NIH HHS/ -- CA09032/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1986 May 16;232(4752):854-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2422755" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Base Sequence ; Cloning, Molecular ; Concanavalin A/pharmacology ; DNA/genetics ; Endopeptidases/*genetics ; Mice ; Mice, Inbred C57BL ; Mice, Inbred CBA ; Mice, Nude ; Nucleic Acid Hybridization ; RNA/genetics ; Serine Endopeptidases ; T-Lymphocytes, Cytotoxic/drug effects/*metabolism
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 28
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    Nutrition policy controversies (1986)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1986-05-16
    Beschreibung: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Harper, A E -- New York, N.Y. -- Science. 1986 May 16;232(4752):810-1.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3704627" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Diet ; Female ; Humans ; Life Expectancy ; Male ; *Nutritional Physiological Phenomena
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 29
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    Researchers grapple with problems of updating classic psychological test (1986)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1986-09-19
    Beschreibung: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Holden, C -- New York, N.Y. -- Science. 1986 Sep 19;233(4770):1249-51.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3749875" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Adolescent ; Adult ; Female ; Humans ; *Mmpi ; Male ; United States
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 30
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    Separation of DNA binding from the transcription-activating function of a eukaryotic regulatory protein (1986)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1986-02-14
    Beschreibung: The yeast GAL4 protein (881 amino acids) binds to specific DNA sites upstream of target genes and activates transcription. Derivatives of this protein bearing as few as 74 amino terminal residues bind to these sites but fail to activate transcription. When appropriately positioned in front of a gene these derivatives act as repressors. These and related findings support the idea that GAL4 activates transcription by touching other DNA-bound proteins.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Keegan, L -- Gill, G -- Ptashne, M -- GM07598/GM/NIGMS NIH HHS/ -- GM32308/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1986 Feb 14;231(4739):699-704.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3080805" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Amino Acid Sequence ; Base Sequence ; DNA, Fungal/genetics/metabolism ; DNA, Recombinant ; DNA-Binding Proteins/*genetics/metabolism ; Fungal Proteins/genetics ; Galactose ; Gene Expression Regulation ; Repressor Proteins/genetics ; Saccharomyces cerevisiae/*genetics ; Transcription Factors/*genetics/metabolism ; *Transcription, Genetic ; beta-Galactosidase/genetics
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 31
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    New growth industry in human growth hormone? (1986)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1986-10-03
    Beschreibung: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kolata, G -- New York, N.Y. -- Science. 1986 Oct 3;234(4772):22-4.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3749891" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Body Height/drug effects ; Child ; Female ; *Growth Hormone/biosynthesis/therapeutic use ; Humans ; Male ; Recombinant Proteins/biosynthesis/therapeutic use
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 32
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    Evolution of color vision (1986)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1986-07-04
    Beschreibung: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kalmus, H -- New York, N.Y. -- Science. 1986 Jul 4;233(4759):14.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3487118" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Biological Evolution ; *Color Perception ; Color Vision Defects/genetics ; Humans ; Male ; Saimiri
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 33
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    Researchers hunt for Alzheimer's disease gene (1986)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1986-04-25
    Beschreibung: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kolata, G -- New York, N.Y. -- Science. 1986 Apr 25;232(4749):448-50.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3961489" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Aged ; Alzheimer Disease/*genetics ; Family ; Female ; Genes ; Humans ; Male ; Middle Aged ; Risk
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 34
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    Cerebellar vermis: essential for long-term habituation of the acoustic startle response (1986)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1986-04-25
    Beschreibung: The acoustic startle response in rats shows both short-term habituation, which recovers in seconds or minutes, and long-term habituation, which is effectively permanent. Lesions of the cerebellar vermis significantly attenuated long-term habituation without affecting the short-term process or altering initial response levels. In this response system the cerebellar vermis is part of an essential circuit for long-term habituation.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Leaton, R N -- Supple, W F Jr -- New York, N.Y. -- Science. 1986 Apr 25;232(4749):513-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3961494" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Acoustic Stimulation ; Animals ; Auditory Pathways/anatomy & histology/physiology ; Cerebellum/anatomy & histology/*physiology ; Habituation, Psychophysiologic/*physiology ; Male ; Rats ; Reflex, Startle/*physiology ; Reticular Formation/analysis/physiology
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 35
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    Presence of nonoxidative ethanol metabolism in human organs commonly damaged by ethanol abuse (1986)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1986-01-31
    Beschreibung: Acetaldehyde, the end product of oxidative ethanol metabolism, contributes to alcohol-induced disease in the liver, but cannot account for damage in organs such as the pancreas, heart, or brain, where oxidative metabolism is minimal or absent; nor can it account for the varied patterns of organ damage found in chronic alcoholics. Thus other biochemical mediators may be important in the pathogenesis of alcohol-induced organ damage. Many human organs were found to metabolize ethanol through a recently described nonoxidative pathway to form fatty acid ethyl esters. Organs lacking oxidative alcohol metabolism yet frequently damaged by ethanol abuse have high fatty acid ethyl ester synthetic activities and show substantial transient accumulations of fatty acid ethyl esters. Thus nonoxidative ethanol metabolism in addition to the oxidative pathway may be important in the pathophysiology of ethanol-induced disease in humans.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Laposata, E A -- Lange, L G -- HL-30152/HL/NHLBI NIH HHS/ -- New York, N.Y. -- Science. 1986 Jan 31;231(4737):497-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3941913" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Adipose Tissue/metabolism ; Alcoholism/*metabolism ; Biotransformation ; Brain/metabolism ; Ethanol/*metabolism ; Humans ; Liver/metabolism ; Male ; Muscles/metabolism ; Myocardium/metabolism ; Oleic Acids/biosynthesis ; Organ Specificity ; Oxidation-Reduction ; Pancreas/metabolism ; Testis/metabolism
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 36
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    All members of the MHC multigene family respond to thyroid hormone in a highly tissue-specific manner (1986)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1986-02-07
    Beschreibung: In mammals different isoforms of myosin heavy chain are encoded by the members of a multigene family. The expression of each gene of this family is regulated in a tissue- and developmental stage-specific manner as well as by hormonal and various pathological stimuli. In this study the molecular basis of isoform switches induced in myosin heavy chain by thyroid hormone was investigated. The expression of the myosin heavy chain gene family was analyzed in seven different muscles of adult rats subjected to hypo- or hyperthyroidism with complementary DNA probes specific for six different myosin heavy chain genes. The results demonstrate that all six genes are responsive to thyroid hormone. More interestingly, the same myosin heavy chain gene can be regulated by thyroid hormone in highly different modes, even in opposite directions, depending on the tissue in which it is expressed. Furthermore, the skeletal embryonic and neonatal myosin heavy chain genes, so far considered specific to these two developmental stages, can be reinduced by hypothyroidism in specific adult muscles.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Izumo, S -- Nadal-Ginard, B -- Mahdavi, V -- New York, N.Y. -- Science. 1986 Feb 7;231(4738):597-600.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3945800" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Diaphragm/drug effects/growth & development/metabolism ; Genes/*drug effects ; Heart/drug effects/growth & development ; Hyperthyroidism/metabolism ; Hypothyroidism/metabolism ; Male ; Muscle Development ; Muscles/drug effects/metabolism ; Myocardium/metabolism ; Myosins/*genetics ; Rats ; Thyroid Hormones/*pharmacology
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 37
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    Binding of the Sp1 transcription factor by the human Harvey ras1 proto-oncogene promoter (1986)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1986-06-13
    Beschreibung: Members of the ras gene family encode proteins that when overproduced or mutated can transform immortalized mammalian cells. It is therefore important to understand the mechanisms by which the ras genes are regulated. The promoter region of the human Harvey ras proto-oncogene c-Ha-ras1 initiates RNA transcription at multiple sites and contains repeated copies of the hexanucleotide GGGCGG and its inverted complement CCGCCC, referred to as GC boxes. These GC boxes consist of sequences identical to those found in the SV40 early promoter, where the human cellular transcriptional factor Sp1 binds. Footprinting analysis with deoxyribonuclease I was used to show that Sp1 binds to six GC box sequences within the c-Ha-ras1 promoter. An in vivo transfection assay showed competition between the 21-base pair repeats of the SV40 promoter and the c-Ha-ras1 promoter for common regulatory factors. In this system the presence of Sp1 is apparently required for c-Ha-ras1 transcription. Analysis of deletions of the c-Ha-ras1 promoter region by means of a transient expression assay revealed that the three Sp1 binding sites closest to the RNA start sites were sufficient for full transcriptional activity.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Ishii, S -- Kadonaga, J T -- Tjian, R -- Brady, J N -- Merlino, G T -- Pastan, I -- New York, N.Y. -- Science. 1986 Jun 13;232(4756):1410-3.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3012774" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Base Sequence ; Binding, Competitive ; DNA/metabolism ; DNA-Binding Proteins/metabolism ; Gene Expression Regulation ; HeLa Cells ; Humans ; *Promoter Regions, Genetic ; *Proto-Oncogenes ; Simian virus 40/genetics ; Transcription Factors/*genetics/metabolism
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 38
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    Systemic ethanol: selective enhancement of responses to acetylcholine and somatostatin in hippocampus (1986)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1986-01-10
    Beschreibung: In rat hippocampal pyramidal cells tested in situ by iontophoresis of several neurotransmitters, ethanol significantly enhanced excitatory responses to acetylcholine and inhibitory responses to somatostatin-14 but had no statistically significant effect on excitatory responses to glutamate or inhibitory responses to gamma-aminobutyric acid or, in preliminary tests, to norepinephrine or serotonin. The effects of ethanol on responses to acetylcholine and somatostatin-14 may provide insight into synaptic mechanisms underlying the behavioral consequences of ethanol intoxication.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Mancillas, J R -- Siggins, G R -- Bloom, F E -- AA-06420/AA/NIAAA NIH HHS/ -- AM-26741/AM/NIADDK NIH HHS/ -- New York, N.Y. -- Science. 1986 Jan 10;231(4734):161-3.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2867600" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Acetylcholine/*pharmacology ; Action Potentials/drug effects ; Animals ; Ethanol/*pharmacology ; Goldfish ; Hippocampus/*drug effects ; Male ; Neurons/drug effects/physiology ; Norepinephrine/pharmacology ; Rats ; Rats, Inbred Strains ; Serotonin/pharmacology ; Somatostatin/*pharmacology ; Synaptic Membranes/drug effects ; gamma-Aminobutyric Acid/pharmacology
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 39
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    The slow, insidious natures of the HTLV's (1986)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1986-01-31
    Beschreibung: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Marx, J L -- New York, N.Y. -- Science. 1986 Jan 31;231(4737):450-1.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3001937" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Acquired Immunodeficiency Syndrome/*microbiology/transmission ; Deltaretrovirus/*pathogenicity ; Female ; Humans ; Male ; National Institutes of Health (U.S.) ; Sex ; United States
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
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  • 40
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    The hypogonadal mouse: reproductive functions restored by gene therapy (1986)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1986-12-12
    Beschreibung: The hypogonadal (hpg) mouse lacks a complete gonadotropin-releasing hormone (GnRH) gene and consequently cannot reproduce. Introduction of an intact GnRH gene into the genome of these mutant mice resulted in complete reversal of the hypogonadal phenotype. Transgenic hpg/hpg homozygotes of both sexes were capable of mating and producing offspring. Pituitary and serum concentrations of luteinizing hormone, follicle-stimulating hormone, and prolactin were restored to those of normal animals. Immunocytochemistry and in situ hybridization showed that GnRH expression was restored in the appropriate hypothalamic neurons of the transgenic hpg animals, an indication of neural-specific expression of the introduced gene.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Mason, A J -- Pitts, S L -- Nikolics, K -- Szonyi, E -- Wilcox, J N -- Seeburg, P H -- Stewart, T A -- New York, N.Y. -- Science. 1986 Dec 12;234(4782):1372-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3097822" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Female ; Follicle Stimulating Hormone/blood ; Gene Expression Regulation ; *Genetic Engineering ; Gonadotropin-Releasing Hormone/genetics ; Histocytochemistry ; Hypogonadism/*genetics ; Hypothalamus/analysis/cytology ; Infertility/genetics/*therapy ; Luteinizing Hormone/blood ; Male ; Mice ; Mutation ; Neurons/analysis ; Phenotype ; Prolactin/blood ; Tissue Distribution
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 41
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    Age and infertility (1986)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1986-09-26
    Beschreibung: Direct evidence on age patterns of infecundity and sterility cannot be obtained from contemporary populations because such large fractions of couples use contraception or have been sterilized. Instead, historical data are exploited to yield upper bounds applicable to contemporary populations on the proportions sterile at each age. Examination of recent changes in sexual behavior that may increase infecundity indicates that sexually transmitted infections, the prime candidate for hypothesized rises in infertility, are unlikely to have added to infecundity to any great extent. These results imply that a woman in a monogamous union faces only moderate increases in the probability of becoming sterile (or infecund) until her late thirties. Nevertheless, it appears that recent changes in reproductive behavior were guaranteed to result in the perception that infecundity is on the rise.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Menken, J -- Trussell, J -- Larsen, U -- HD11720/HD/NICHD NIH HHS/ -- New York, N.Y. -- Science. 1986 Sep 26;233(4771):1389-94.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3755843" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Adolescent ; Adult ; Age Factors ; *Aging ; Female ; *Fertility ; Humans ; Infertility, Female/*epidemiology ; Infertility, Male/*epidemiology ; Male ; Marriage ; Middle Aged ; United States
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
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  • 42
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    Mechanism of the rapid effect of 17 beta-estradiol on medial amygdala neurons (1986)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1986-07-11
    Beschreibung: The mechanism by which sex steroids rapidly modulate the excitability of neurons was investigated by intracellular recording of neurons in rat medial amygdala brain slices. Brief hyperpolarization and increased potassium conductance were produced by 17 beta-estradiol. This effect persisted after elimination of synaptic input and after suppression of protein synthesis. Thus, 17 beta-estradiol directly changes the ionic conductance of the postsynaptic membrane of medial amygdala neurons. In addition, a greater proportion of the neurons from females than from males responded to 17 beta-estradiol.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Nabekura, J -- Oomura, Y -- Minami, T -- Mizuno, Y -- Fukuda, A -- New York, N.Y. -- Science. 1986 Jul 11;233(4760):226-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3726531" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Amygdala/cytology/*drug effects ; Animals ; Cycloheximide/pharmacology ; Dactinomycin/pharmacology ; Estradiol/*pharmacology ; Female ; Male ; Membrane Potentials/drug effects ; Neurons/drug effects/physiology ; Rats ; Rats, Inbred Strains
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 43
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    Sequencing the human genome (1986)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1986-07-11
    Beschreibung: The title of the report by R. Myerowitz and N. Hogikyan on page 1646 of the issue of 27 June was incorrect. It should have been "Different mutations in Ashkenazi Jews and non-Jewish French Canadians with Tay-Sachs disease."〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Noll, H -- New York, N.Y. -- Science. 1986 Jul 11;233(4760):143.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3726524" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Base Sequence ; *Chromosomes, Human ; *Genes ; Humans
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 44
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    Sex and needles, not insects and pigs, spread AIDS in Florida town (1986)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1986-10-24
    Beschreibung: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Norman, C -- New York, N.Y. -- Science. 1986 Oct 24;234(4775):415-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3764417" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Acquired Immunodeficiency Syndrome/classification/epidemiology/*transmission ; Arbovirus Infections/complications ; Female ; Humans ; Male
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    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 45
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    Military AIDS testing offers research bonus (1986)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1986-05-16
    Beschreibung: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Norman, C -- New York, N.Y. -- Science. 1986 May 16;232(4752):818-20.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3704628" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): *Acquired Immunodeficiency Syndrome/transmission ; Female ; Humans ; Male ; Mass Screening ; *Military Medicine ; United States
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 46
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    Nucleotide sequence of SRV-1, a type D simian acquired immune deficiency syndrome retrovirus (1986)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1986-03-28
    Beschreibung: Simian acquired immune deficiency syndrome (SAIDS) in the macaque genus of monkeys at the California Primate Research Center is apparently caused by infection by a type D retrovirus. The complete nucleotide sequence (8173 base pairs) of a molecular clone of the prototype SAIDS virus isolate, SRV-1, reveals a typical retrovirus structure with long terminal repeats (346 base pairs) and open reading frames for the gag (663 codons), pol (867 codons), and env (605 codons) genes. SRV-1 also has a separate open reading frame of 314 codons between the gag and pol genes that defines the viral protease gene (prt) and a short open reading frame of unknown significance downstream from the env gene. The SRV-1 protease region shows a high degree of homology to its counterpart in the hamster intracisternal A-type particle genome; both these protease genes are about twice as long as the analogous region of other retroviruses. SRV-1 has no notable similarity in either genetic organization or sequence to the human AIDS retroviruses.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Power, M D -- Marx, P A -- Bryant, M L -- Gardner, M B -- Barr, P J -- Luciw, P A -- AI20573/AI/NIAID NIH HHS/ -- CA37467/CA/NCI NIH HHS/ -- RR00169/RR/NCRR NIH HHS/ -- New York, N.Y. -- Science. 1986 Mar 28;231(4745):1567-72.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3006247" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Acquired Immunodeficiency Syndrome/microbiology/*veterinary ; Amino Acid Sequence ; Animals ; Base Sequence ; Cloning, Molecular ; DNA Restriction Enzymes/metabolism ; Genes, Viral ; Macaca/*microbiology ; Peptide Hydrolases/genetics ; Retroviridae/*genetics ; Retroviridae Proteins/genetics ; Sequence Homology, Nucleic Acid
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 47
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    AIDS in Africa: an epidemiologic paradigm (1986)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1986-11-21
    Beschreibung: Cases of the acquired immune deficiency syndrome (AIDS) have been reported in countries throughout the world. Initial surveillance studies in Central Africa suggest an annual incidence of AIDS of 550 to 1000 cases per million adults. The male to female ratio of cases is 1:1, with age- and sex-specific rates greater in females less than 30 years of age and greater in males over age 40. Clinically, AIDS in Africans is often characterized by a diarrhea-wasting syndrome, opportunistic infections, such as tuberculosis, cryptococcosis, and cryptosporidiosis, or disseminated Kaposi's sarcoma. From 1 to 18% of healthy blood donors and pregnant women and as many as 27 to 88% of female prostitutes have antibodies to human immunodeficiency virus (HIV). The present annual incidence of infection is approximately 0.75% among the general population of Central and East Africa. The disease is transmitted predominantly by heterosexual activity, parenteral exposure to blood transfusions and unsterilized needles, and perinatally from infected mothers to their newborns, and will continue to spread rapidly where economic and cultural factors favor these modes of transmission. Prevention and control of HIV infection through educational programs and blood bank screening should be an immediate public health priority for all African countries.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Quinn, T C -- Mann, J M -- Curran, J W -- Piot, P -- New York, N.Y. -- Science. 1986 Nov 21;234(4779):955-63.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3022379" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Acquired Immunodeficiency Syndrome/*epidemiology/history/transmission ; Africa ; Age Factors ; Antibodies, Viral/analysis ; Blood Transfusion ; Deltaretrovirus/immunology ; Female ; Forecasting ; Humans ; Injections, Intravenous ; Male ; Maternal-Fetal Exchange ; Opportunistic Infections/complications ; Pregnancy ; Prostitution ; Retroviridae/isolation & purification ; Risk ; Sarcoma, Kaposi/epidemiology ; Sex Factors ; Sexually Transmitted Diseases/epidemiology
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 48
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    Molecular analysis of the hotspot of recombination in the murine major histocompatibility complex (1986)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1986-10-10
    Beschreibung: Biological and serological assays have been used to define four subregions for the I region of the major histocompatibility complex (MHC) in the order I-A, I-B, I-J, and I-E. The I-J subregion presumably encodes the I-J polypeptide of the elusive T-cell suppressor factors. Restriction enzyme site polymorphisms and DNA sequence analyses of the I region from four recombinant mouse strains were used to localize the putative I-B and I-J subregions to a 1.0-kilobase (kb) region within the E beta gene. Sequencing this region from E beta clones derived from the two mouse strains: B10.A(3R), I-Jb and B10.A(5R), I-Jk initially used to define the I-J subregion revealed that these regions are identical, hence the distinct I-Jb and I-Jk molecules cannot be encoded by this DNA. In addition, the DNA sequence data also refute the earlier mapping of the I-B subregion. Analysis of the DNA sequences of three parental and four I region recombinants reveals that the recombinant events in three of the recombinant strains occurred within a 1-kb region of DNA, supporting the proposition that a hotspot for recombination exists in the I region. The only striking feature of this hotspot is a tetramer repeat (AGGC)n that shows 80 percent homology to the minisatellite sequence which may facilitate recombination in human chromosomes.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kobori, J A -- Strauss, E -- Minard, K -- Hood, L -- New York, N.Y. -- Science. 1986 Oct 10;234(4773):173-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3018929" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Base Sequence ; DNA Restriction Enzymes ; Genes, MHC Class II ; *Major Histocompatibility Complex ; Mice ; *Recombination, Genetic ; Repetitive Sequences, Nucleic Acid ; Suppressor Factors, Immunologic/genetics
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 49
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    Static and initiator protein-enhanced bending of DNA at a replication origin (1986)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1986-09-19
    Beschreibung: DNA bending has been suggested to play a role in the regulation of gene expression, initiation of DNA replication, DNA packaging, and the recognition of specific DNA sequences by proteins. It has recently been demonstrated that DNA bending can be sequence-directed. Bent DNA has also been observed as a consequence of sequence-specific binding of proteins to DNA. In this report DNA of plasmid pT181 is shown to contain a bend at the replication origin. Furthermore, this bend is enhanced by the binding of the pT181 replication initiator protein, RepC, to the origin.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Koepsel, R R -- Khan, S A -- GM 31685/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1986 Sep 19;233(4770):1316-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3749879" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Bacterial Proteins/metabolism ; Base Sequence ; DNA/genetics/*metabolism ; *DNA Replication ; Nucleic Acid Conformation ; Plasmids
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 50
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    Maleness pinpointed on Y chromosome (1986)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1986-11-28
    Beschreibung: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kolata, G -- New York, N.Y. -- Science. 1986 Nov 28;234(4780):1076-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3775376" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Female ; H-Y Antigen/genetics ; Humans ; Lizards ; Male ; Mice ; *Sex Determination Analysis ; *Y Chromosome
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 51
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    Epidemiology of drug abuse: an overview (1986)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1986-11-21
    Beschreibung: Issues regarding the use of epidemiology in drug abuse research are discussed and systems for monitoring national trends and identifying risk factors are described. Data indicate a general decline in marijuana use among youth, a cohort aging effect among heroin and marijuana users, and increased prevalence and health consequences associated with cocaine use.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kozel, N J -- Adams, E H -- New York, N.Y. -- Science. 1986 Nov 21;234(4779):970-4.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3490691" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Acquired Immunodeficiency Syndrome/complications ; Adolescent ; Adult ; Child ; Cocaine ; Epidemiologic Methods ; Female ; Heroin ; Humans ; Male ; Marijuana Abuse/epidemiology ; Population Surveillance ; Risk ; Substance-Related Disorders/*epidemiology
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 52
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    Molecular genetics of human color vision: the genes encoding blue, green, and red pigments (1986)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1986-04-11
    Beschreibung: Human color vision is based on three light-sensitive pigments. The isolation and sequencing of genomic and complementary DNA clones that encode the apoproteins of these three pigments are described. The deduced amino acid sequences show 41 +/- 1 percent identity with rhodopsin. The red and green pigments show 96 percent mutual identity but only 43 percent identity with the blue pigment. Green pigment genes vary in number among color-normal individuals and, together with a single red pigment gene, are proposed to reside in a head-to-tail tandem array within the X chromosome.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Nathans, J -- Thomas, D -- Hogness, D S -- New York, N.Y. -- Science. 1986 Apr 11;232(4747):193-202.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2937147" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Amino Acid Sequence ; Animals ; Base Sequence ; Biological Evolution ; Cattle ; Cebidae ; Cercopithecidae ; Color ; Color Perception/*physiology ; DNA/metabolism ; Drosophila melanogaster ; Eye Proteins/genetics/physiology ; *Genes ; Humans ; Molecular Sequence Data ; Nucleic Acid Hybridization ; Photoreceptor Cells/physiology ; RNA, Messenger/genetics ; Retinal Pigments/*genetics ; Retinaldehyde/physiology ; Rhodopsin/genetics ; Rod Opsins ; X Chromosome
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 53
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    Stress-induced inhibition of reproductive functions: role of endogenous corticotropin-releasing factor (1986)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1986-02-07
    Beschreibung: In the adult castrated male rat, exposure to inescapable, intermittent electroshocks inhibited the pulsatile pattern of luteinizing hormone release and markedly lowered its plasma concentrations. The central administration of the corticotropin-releasing factor (CRF) antagonist alpha-helical ovine CRF residues 9 to 41 reversed the inhibitory action of stress. Neither its peripheral injection, nor the intraventricular injection of the inactive CRF analog des-Glu to Arg ovine CRF was effective. These results suggest that endogenous CRF may mediate some deleterious effects of noxious stimuli on reproduction.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Rivier, C -- Rivier, J -- Vale, W -- AA03504/AA/NIAAA NIH HHS/ -- AM26741/AM/NIADDK NIH HHS/ -- HD13527/HD/NICHD NIH HHS/ -- New York, N.Y. -- Science. 1986 Feb 7;231(4738):607-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3003907" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Adrenocorticotropic Hormone/physiology ; Animals ; Corticotropin-Releasing Hormone/pharmacology/*physiology ; Electroshock ; Female ; Humans ; Luteinizing Hormone/blood ; Male ; Orchiectomy ; Rats ; *Reproduction/drug effects ; Stress, Psychological/*physiopathology
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 54
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    Studies of the human c-myb gene and its product in human acute leukemias (1986)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1986-07-18
    Beschreibung: The myb gene is the transforming oncogene of the avian myeloblastosis virus (AMV); its normal cellular homolog, c-myb, is conserved across a broad span of evolution. In humans, c-myb is expressed in malignant hematopoietic cell lines and in primary hematopoietic tumors. Partial complementary DNA clones were generated from blast cells of patients with acute myelogenous leukemia. The sequences of the clones were compared to the c-myb of other species, as well as the v-myb of AMV. In addition, the carboxyl terminal region of human c-myb was placed in an expression vector to obtain protein for the generation of antiserum, which was used to identify the human c-myb gene product. Like v-myb, this protein was found within the nucleus of leukemic cells where it was associated with the nuclear matrix. These studies provide further evidence that c-myb might be involved in human leukemia.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Slamon, D J -- Boone, T C -- Murdock, D C -- Keith, D E -- Press, M F -- Larson, R A -- Souza, L M -- CA36827/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1986 Jul 18;233(4761):347-51.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3014652" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): *Aspartate Carbamoyltransferase ; Avian Leukosis Virus/*genetics ; Avian Myeloblastosis Virus/*genetics ; Base Sequence ; *Carbamoyl-Phosphate Synthase (Glutamine-Hydrolyzing) ; Cell Line ; Cloning, Molecular ; DNA/analysis ; DNA Restriction Enzymes/metabolism ; *Dihydroorotase ; Escherichia coli/genetics ; Hematopoietic Stem Cells/microbiology ; Humans ; Leukemia, Myeloid, Acute/*genetics ; Molecular Weight ; *Multienzyme Complexes ; *Oncogenes ; Proteins/analysis
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 55
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    A mouse homeo box gene is expressed in spermatocytes and embryos (1986)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1986-08-08
    Beschreibung: The MH-3 gene, which contains a homeo box that is expressed specifically in the adult testis, was identified and mapped to mouse chromosome 6. By means of in situ hybridization with adult testis sections and Northern blot hybridization with testis RNA from prepuberal mice and from Sl/Sld mutant mice, it was demonstrated that this gene is expressed in male germ cells during late meiosis. In the embryo, MH-3 transcripts were present at day 11.5 post coitum, a stage in mouse development when gonadal differentiation has not yet occurred. The MH-3 gene may have functions in spermatogenesis and embryogenesis.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Rubin, M R -- Toth, L E -- Patel, M D -- D'Eustachio, P -- Nguyen-Huu, M C -- New York, N.Y. -- Science. 1986 Aug 8;233(4764):663-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3726554" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; DNA/genetics ; Drosophila ; Embryo, Mammalian/*metabolism ; *Embryo, Nonmammalian ; *Genes ; Male ; Mice ; Morphogenesis ; Mutation ; Nucleic Acid Hybridization ; Sequence Homology, Nucleic Acid ; Spermatocytes/*metabolism ; Spermatogenesis
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 56
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    Biotech firms compete in genetic diagnosis (1986)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1986-12-12
    Beschreibung: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Saltus, R -- New York, N.Y. -- Science. 1986 Dec 12;234(4782):1318-20.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3466349" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Base Sequence ; *Biotechnology ; Chromosomes, Human, Pair 7 ; Genetic Markers ; *Genetic Testing ; Humans
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 57
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    In vivo competition between a metallothionein regulatory element and the SV40 enhancer (1986)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1986-04-04
    Beschreibung: The human metallothionein-IIA (hMT-IIA) gene contains an enhancer element within its 5' regulatory region. This enhancer element can compete with the SV40 enhancer for one or more cellular factors in vivo. The competition between the two elements is modulated by cadmium, an inducer of hMT-IIA transcription. The data presented are consistent with a model in which heavy metal ions control the ability of the hMT-IIA enhancer to bind a positive factor, leading to increased transcription. The same factor is required for maximal activity of the SV40 enhancer, which suggests that viruses utilize factors that have a normal role in cellular gene expression to control their own genes.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Scholer, H -- Haslinger, A -- Heguy, A -- Holtgreve, H -- Karin, M -- ES03222/ES/NIEHS NIH HHS/ -- New York, N.Y. -- Science. 1986 Apr 4;232(4746):76-80.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3006253" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Acetyltransferases/genetics ; Animals ; Base Sequence ; Cadmium/pharmacology ; Cell Line ; Cercopithecus aethiops ; Chloramphenicol O-Acetyltransferase ; *Enhancer Elements, Genetic ; *Genes ; *Genes, Regulator ; *Genes, Viral ; Humans ; Kidney ; Kinetics ; Metallothionein/*genetics ; Plasmids ; Simian virus 40/*genetics ; Transcription, Genetic/drug effects ; Transfection
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 58
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    Direct cloning and sequence analysis of enzymatically amplified genomic sequences (1986)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1986-09-05
    Beschreibung: A method is described for directly cloning enzymatically amplified segments of genomic DNA into an M13 vector for sequence analysis. A 110-base pair fragment of the human beta-globin gene and a 242-base pair fragment of the human leukocyte antigen DQ alpha locus were amplified by the polymerase chain reaction method, a procedure based on repeated cycles of denaturation, primer annealing, and extension by DNA polymerase I. Oligonucleotide primers with restriction endonuclease sites added to their 5' ends were used to facilitate the cloning of the amplified DNA. The analysis of cloned products allowed the quantitative evaluation of the amplification method's specificity and fidelity. Given the low frequency of sequence errors observed, this approach promises to be a rapid method for obtaining reliable genomic sequences from nanogram amounts of DNA.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Scharf, S J -- Horn, G T -- Erlich, H A -- New York, N.Y. -- Science. 1986 Sep 5;233(4768):1076-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3461561" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Base Sequence ; Cloning, Molecular/*methods ; Coliphages/*genetics ; DNA Polymerase I/metabolism ; Gene Amplification ; *Genetic Vectors ; Globins/*genetics ; HLA-DQ Antigens ; Histocompatibility Antigens Class II/*genetics ; Humans ; In Vitro Techniques ; Polymorphism, Genetic
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 59
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    Differences in adrenergic recognition by pancreatic A and B cells (1986)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1986-05-16
    Beschreibung: The adrenergic control of glucose homeostasis is mediated in part through variations in the release of pancreatic hormones. In this study, purified pancreatic A and B cells were used to identify the recognition and messenger units involved in the adrenergic regulation of glucagon and insulin release. Catecholamines induced beta-adrenergic receptor activity in A cells and alpha 2-adrenergic receptor activity in B cells. The two recognition units provoked opposite variations in the production of cellular cyclic adenosine monophosphate, the beta-adrenergic unit enhancing the nucleotide's permissive effect on amino acid-induced glucagon release and the alpha 2-adrenergic unit inhibiting that upon glucose-induced insulin release. In both cell types, catecholamines interact powerfully with the synergistic control of hormone release by nutrient- and (neuro)hormone-driven messenger systems.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Schuit, F C -- Pipeleers, D G -- New York, N.Y. -- Science. 1986 May 16;232(4752):875-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2871625" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Adrenergic beta-Agonists/pharmacology ; Adrenergic beta-Antagonists/pharmacology ; Animals ; Cyclic AMP/analysis ; Epinephrine/pharmacology ; Glucagon/secretion ; Insulin/secretion ; Islets of Langerhans/analysis/drug effects/*physiology ; Male ; Rats ; Rats, Inbred Strains ; Receptors, Adrenergic, beta/drug effects/*physiology
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 60
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    Biochemical and genetic evidence for the hepatitis B virus replication strategy (1986)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1986-04-25
    Beschreibung: Hepatitis B viruses synthesize their open circular DNA genomes by reverse transcription of an RNA intermediate. The details of this process have been examined with the use of mammalian hepatitis B viruses to map the sites for initiation and termination of DNA synthesis and to explore the consequences of mutations introduced at short, separated direct repeats (DR1 and DR2) implicated in the mechanisms of initiation. The first DNA strand to be synthesized is initiated within DR1, apparently by a protein primer, and the completed strand has a short terminal redundancy. In contrast, the second DNA strand begins with the sequence adjacent to DR2, but its 5' end is joined to an oligoribonucleotide that contains DR1; thus the putative RNA primer has been transposed to the position of DR2. It is now possible to propose a detailed strategy for reverse transcription by hepatitis B viruses that can be instructively compared with that used by retroviruses.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Seeger, C -- Ganem, D -- Varmus, H E -- New York, N.Y. -- Science. 1986 Apr 25;232(4749):477-84.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3961490" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Base Sequence ; DNA, Viral/metabolism ; Hepatitis B virus/genetics/*physiology ; Mutation ; RNA, Viral/metabolism ; Sciuridae ; Templates, Genetic ; *Virus Replication
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 61
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    A selective imidazobenzodiazepine antagonist of ethanol in the rat (1986)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1986-12-05
    Beschreibung: Ethanol, at pharmacologically relevant concentrations of 20 to 100 mM, stimulates gamma-aminobutyric (GABA) receptor-mediated uptake of 36Cl-labeled chlorine into isolated brain vesicles. One drug that acts at GABA-benzodiazepine receptors, the imidazobenzodiazepine Ro15-4513, has been found to be a potent antagonist of ethanol-stimulated 36Cl- uptake into brain vesicles, but it fails to antagonize either pentobarbital- or muscimol-stimulated 36Cl- uptake. Pretreatment of rats with Ro15-4513 blocks the anticonflict activity of low doses of ethanol (but not pentobarbital) as well as the behavioral intoxication observed with higher doses of ethanol. The effects of Ro15-4513 in antagonizing ethanol-stimulated 36Cl- uptake and behavior are completely blocked by benzodiazepine receptor antagonists. However, other benzodiazepine receptor inverse agonists fail to antagonize the actions of ethanol in vitro or in vivo, suggesting a novel interaction of Ro15-4513 with the GABA receptor-coupled chloride ion channel complex. The identification of a selective benzodiazepine antagonist of ethanol-stimulated 36Cl- uptake in vitro that blocks the anxiolytic and intoxicating actions of ethanol suggests that many of the neuropharmacologic actions of ethanol may be mediated via central GABA receptors.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Suzdak, P D -- Glowa, J R -- Crawley, J N -- Schwartz, R D -- Skolnick, P -- Paul, S M -- New York, N.Y. -- Science. 1986 Dec 5;234(4781):1243-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3022383" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Anxiety/drug effects ; Azides/*pharmacology ; Benzodiazepines/*pharmacology ; Chlorides/metabolism ; Ethanol/*antagonists & inhibitors ; Flumazenil/pharmacology ; Male ; Pyrazoles/pharmacology ; Rats ; Rats, Inbred Strains ; Receptors, GABA-A/drug effects ; Synaptosomes/drug effects
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 62
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    Expression and cell type--specific processing of human preproenkephalin with a vaccinia recombinant (1986)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1986-06-27
    Beschreibung: The posttranslational maturation of a complex precursor polyprotein, human proenkephalin, was assessed by infection of a wide spectrum of cell types with a recombinant vaccinia virus that expressed human proenkephalin. The infected cells rapidly produced both cellular and secreted Met-enkephalin immunoreactivity. Although each cell line could secrete intact proenkephalin, only a mouse pituitary line was capable of processing proenkephalin to mature enkephalin peptides. The quantity of intact proenkephalin secreted from BSC-40 cells (derived from African Green monkey kidney) was sufficient to establish the value of vaccinia virus as a mammalian cell expression vector.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Thomas, G -- Herbert, E -- Hruby, D E -- 7 RO1 DA04154-01/DA/NIDA NIH HHS/ -- New York, N.Y. -- Science. 1986 Jun 27;232(4758):1641-3.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3754979" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Base Sequence ; Cercopithecus aethiops ; Enkephalin, Methionine/biosynthesis ; Enkephalins/*biosynthesis/genetics ; Genetic Vectors ; Humans ; Mice ; Protein Precursors/*biosynthesis/genetics ; Rats ; Recombinant Proteins/*biosynthesis ; Vaccinia virus/*genetics
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 63
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    Male-killing bacteria in a parasitic wasp (1986)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1986-02-28
    Beschreibung: A rod-shaped bacterium has been isolated that kills male eggs of the wasp Nasonia vitripennis, a pupal parasite of flies. Only some wasps of this species express this son-killer trait, and these wasps have bacterial infections in various organs. The bacterium was isolated from son-killer wasp tissue and from the hemolymph of fly pupae parasitized by wasps expressing the son-killer trait. Bacteria are apparently transferred to parasitized fly pupae during wasp oviposition, and developing wasp offspring are subsequently infected perorally. Sex-ratio distortion by microorganisms is found in a variety of plants and animals. The infectious peroral transmission of this trait variety of plants and animals. The infectious peroral transmission of this trait is in contrast to the typical pattern of cytoplasmic inheritance of sex-ratio distortion in these other systems.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Werren, J H -- Skinner, S W -- Huger, A M -- 5 T32 6MO7131/PHS HHS/ -- New York, N.Y. -- Science. 1986 Feb 28;231(4741):990-2.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3945814" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Bacteria ; Female ; Hemolymph/microbiology ; Hymenoptera/*microbiology ; Male ; Ovum/microbiology ; Sex Factors ; Wasps/*microbiology
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 64
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    Isolation and sequence of L3T4 complementary DNA clones: expression in T cells and brain (1986)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1986-10-31
    Beschreibung: T lymphocytes express on their surface not only a specific receptor for antigen and major histocompatibility complex proteins, but also a number of additional glycoproteins that are thought to play accessory roles in the processes of recognition and signal transduction. L3T4 is one such T-cell surface protein that is expressed on most mouse thymocytes and on mature mouse T cells that recognize class II (Ia) major histocompatibility complex proteins. Such cells are predominantly of the helper/inducer phenotype. In this study, complementary DNA clones encoding L3T4 were isolated and sequenced. The predicted protein sequence shows that L3T4 is a member of the immunoglobulin gene superfamily. It is encoded by a single gene that does not require rearrangement prior to expression. Although the protein has not previously been demonstrated on nonhematopoietic cells, two messenger RNA species specific for L3T4 are found in brain. The minor species comigrates with the L3T4 transcript in T cells, whereas the major species is 1 kilobase smaller.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Tourvieille, B -- Gorman, S D -- Field, E H -- Hunkapiller, T -- Parnes, J R -- 1 F32 CA07877-01/CA/NCI NIH HHS/ -- AI11313/AI/NIAID NIH HHS/ -- GM34991/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1986 Oct 31;234(4776):610-4.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3094146" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Amino Acid Sequence ; Animals ; Antigens, Differentiation, T-Lymphocyte ; Antigens, Surface/genetics/*isolation & purification ; Base Sequence ; Brain/*metabolism ; Cloning, Molecular ; DNA/genetics/isolation & purification ; Humans ; Mice ; Mice, Inbred C57BL ; Nucleic Acid Hybridization ; RNA, Messenger/genetics ; Sequence Homology, Nucleic Acid ; T-Lymphocytes/*immunology/metabolism
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 65
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    Alterations of myc, myb, and rasHa proto-oncogenes in cancers are frequent and show clinical correlation (1986)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1986-01-17
    Beschreibung: Alterations of c-myc, c-rasHa, or c-myb oncogenes were found in more than one-third of human solid tumors. Amplification of c-myc occurred in advanced, widespread tumors or in aggressive primary tumors. Apparent allelic deletions of c-rasHa and c-myb can be correlated with progression and metastasis of carcinomas and sarcomas.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Yokota, J -- Tsunetsugu-Yokota, Y -- Battifora, H -- Le Fevre, C -- Cline, M J -- CA15619/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1986 Jan 17;231(4735):261-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3941898" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Alleles ; Child ; DNA, Neoplasm/genetics/isolation & purification ; Female ; Humans ; Leukemia/genetics ; Male ; Middle Aged ; Neoplasms/*genetics ; Oncogenes ; Phenotype ; Polymorphism, Genetic ; *Proto-Oncogenes ; Sarcoma/genetics ; Transcription, Genetic
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 66
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    The intervening sequence RNA of Tetrahymena is an enzyme (1986)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1986-01-31
    Beschreibung: A shortened form of the self-splicing ribosomal RNA (rRNA) intervening sequence of Tetrahymena thermophila acts as an enzyme in vitro. The enzyme catalyzes the cleavage and rejoining of oligonucleotide substrates in a sequence-dependent manner with Km = 42 microM and kcat = 2 min-1. The reaction mechanism resembles that of rRNA precursor self-splicing. With pentacytidylic acid as the substrate, successive cleavage and rejoining reactions lead to the synthesis of polycytidylic acid. Thus, the RNA molecule can act as an RNA polymerase, differing from the protein enzyme in that it uses an internal rather than an external template. At pH 9, the same RNA enzyme has activity as a sequence-specific ribonuclease.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Zaug, A J -- Cech, T R -- GM28039/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1986 Jan 31;231(4737):470-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3941911" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Base Sequence ; Binding, Competitive ; *DNA-Directed RNA Polymerases ; Kinetics ; *RNA Splicing ; RNA, Ribosomal/*genetics/metabolism ; Tetrahymena/*genetics
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 67
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    Human prion protein cDNA: molecular cloning, chromosomal mapping, and biological implications (1986)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1986-07-18
    Beschreibung: A human complementary DNA whose protein product is considered to be the major component of scrapie-associated fibrils in Creutzfeldt-Jakob disease, kuru, and Gerstmann-Straussler syndrome has been identified and characterized. The extensive homology of this gene sequence to the hamster PrP 27- to 30-kilodalton prion protein complementary DNA clone, and its existence as a single copy in the human genome, leads to the conclusion that this is the human prion gene. This human prion gene has been mapped to human chromosome 20, negating a direct link between the prion protein and Down's syndrome or the amyloid of Alzheimer's disease.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Liao, Y C -- Lebo, R V -- Clawson, G A -- Smuckler, E A -- CA 21141/CA/NCI NIH HHS/ -- CA 40145/CA/NCI NIH HHS/ -- KO4 CA 01003/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1986 Jul 18;233(4761):364-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3014653" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Amino Acid Sequence ; Animals ; Base Sequence ; Chromosome Mapping ; Chromosomes, Human, 19-20 ; Chromosomes, Human, 21-22 and Y ; *Cloning, Molecular ; Creutzfeldt-Jakob Syndrome/genetics/microbiology ; Cricetinae ; DNA/*analysis ; DNA Restriction Enzymes/metabolism ; Humans ; Prions/*genetics ; Viral Proteins/analysis
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
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  • 68
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    AIDS in Africa (1986)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1986-01-17
    Beschreibung: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Linke, U -- New York, N.Y. -- Science. 1986 Jan 17;231(4735):203.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3941894" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Acquired Immunodeficiency Syndrome/epidemiology/*transmission ; Circumcision, Male ; Female ; Humans ; Male ; Sexual Behavior
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 69
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    Novel serine proteases encoded by two cytotoxic T lymphocyte-specific genes (1986)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1986-05-16
    Beschreibung: Genes that are expressed exclusively in cytotoxic T cells should encode proteins that are essential for target cell lysis in cell-mediated immune responses. The sequences of two cytotoxic T lymphocyte-specific complementary DNA's (cDNA's) suggest that the two genes encode serine proteases. A full-length cDNA corresponding to one of the genes was isolated and sequenced. The predicted protein resembles serine proteases in that it includes all the residues that form the catalytic triad of the active site of serine proteases. Moreover, it has sequence characteristics thought to occur only in rat mast cell protease type II. These results are in accord with the view that a protease cascade plays a key role in cytotoxic T-cell activation.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lobe, C G -- Finlay, B B -- Paranchych, W -- Paetkau, V H -- Bleackley, R C -- New York, N.Y. -- Science. 1986 May 16;232(4752):858-61.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3518058" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Base Sequence ; Cloning, Molecular ; DNA/genetics ; Endopeptidases/*genetics ; Genes ; Mice ; Serine Endopeptidases ; T-Lymphocytes, Cytotoxic/*metabolism
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 70
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    Psychotomimesis mediated by kappa opiate receptors (1986)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1986-08-15
    Beschreibung: The kappa opioid agonists are analgesics that seem to be free of undesired morphine-like effects. Their dysphoric actions observed with the kappa agonist cyclazocine are thought to be mediated by an action at sigma-phencyclidine receptors. The benzomorphan kappa agonist MR 2033 is inactive at sigma-phencyclidine receptors. In male subjects, the opiate-active (-)-isomer, but not the (+)-isomer, elicited dose-dependent dysphoric and psychotomimetic effects that were antagonized by naloxone. Thus, kappa opiate receptors seem to mediate psychotomimetic effects. In view of the euphorigenic properties of mu agonists, our results imply the existence of opposed opioid systems affecting emotional and perceptual experiences.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Pfeiffer, A -- Brantl, V -- Herz, A -- Emrich, H M -- New York, N.Y. -- Science. 1986 Aug 15;233(4765):774-6.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3016896" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Adult ; Anxiety ; Benzomorphans/adverse effects/*pharmacology ; Humans ; Male ; Middle Aged ; Morphinans/*pharmacology ; Naloxone/pharmacology ; Personality Tests ; Phencyclidine/pharmacology ; Receptors, Opioid/drug effects/*physiology ; Receptors, Opioid, kappa
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
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  • 71
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    Two magnetoreception pathways in a migratory salamander (1986)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1986-08-15
    Beschreibung: Male eastern red-spotted newts (Notophthalmus viridescens) under controlled laboratory conditions exhibit unimodal magnetic compass orientation either in a trained compass direction or in the direction of their home pond. If the vertical component of the magnetic field is inverted, newts exhibiting the simple-compass response undergo a 180 degree reversal in orientation, whereas newts orienting in the home direction are unaffected by this treatment. These results indicate that newts use an axial compass mechanism for simple-compass orientation similar to that found in migrating birds. However, a distinct magnetoreception pathway with polar response properties is involved in homing and is possibly linked in some way to the navigational map.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Phillips, J B -- 5T32MHI5793/MH/NIMH NIH HHS/ -- NS-19089/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 1986 Aug 15;233(4765):765-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3738508" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Adaptation, Physiological ; Animals ; Locomotion ; *Magnetics ; Male ; Salamandridae/*physiology ; Sensory Receptor Cells/*physiology
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 72
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    Fine structure genetic analysis of a beta-globin promoter (1986)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1986-05-02
    Beschreibung: A novel procedure for saturation mutagenesis of cloned DNA was used to obtain more than 100 single base substitutions within the promoter of the mouse beta-major globin gene. The effects of these promoter substitutions on transcription were determined by transfecting the cloned mutant genes into HeLa cells on plasmids containing an SV40 transcription enhancer, and measuring the levels of correctly initiated beta-globin transcripts after 2 days. Mutations in three regions of the promoter resulted in a significant decrease in the level of transcription: (i) the CACCC box, located between -87 and -95, (ii) the CCAAT box, located between -72 and -77, and (iii) the TATA box, located between -26 and -30 relative to the start site of transcription. In contrast, two different mutations in nucleotides immediately upstream from the CCAAT box resulted in a 3- to 3.5-fold increase in transcription. With two minor exceptions, single base substitutions in all other regions of the promoter had no effect on transcription. These results precisely delineate the cis-acting sequences required for accurate and efficient initiation of beta-globin transcription, and they establish a general approach for the fine structure genetic analysis of eukaryotic regulatory sequences.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Myers, R M -- Tilly, K -- Maniatis, T -- New York, N.Y. -- Science. 1986 May 2;232(4750):613-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3457470" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Base Sequence ; Cloning, Molecular ; DNA/genetics ; Genes ; Genetic Engineering ; Globins/biosynthesis/*genetics ; HeLa Cells ; Humans ; Mice ; Mutation ; *Promoter Regions, Genetic ; Transcription, Genetic
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 73
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    Expression cloning of a lymphocyte homing receptor cDNA: ubiquitin is the reactive species (1986)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1986-02-21
    Beschreibung: The lymphocyte cell surface receptor for the high endothelial venules (HEV's) of peripheral lymph nodes is specifically recognized by the monoclonal antibody MEL-14. Three independent complementary DNA (cDNA) clones, each of which encodes the protein ubiquitin, were detected by virtue of the expression of the MEL-14 antigenic determinant on cDNA-beta-galactosidase bacterial fusion proteins. The antigenic determinant defined by MEL-14 resides in the carboxyl terminal 13-amino-acid proteolytic peptide of ubiquitin, but is undetected in intact undenatured ubiquitin and other cellular ubiquitinated proteins. Antisera and monoclonal antibodies to ubiquitin determinants bind to the surface of both HEV-receptor positive and negative cell lines. The MEL-14-identified cDNA clones hydridize to RNA transcripts that encode tandemly repeated ubiquitins. Sequence analysis of these polyubiquitin cDNA's does not identify a leader sequence for export to the cell surface. The expression of the MEL-14 epitope of ubiquitin depends upon its local environment. The steady-state levels of expression of the ubiquitin messenger RNA's do not correlate with either the tissue derivation of the RNA or the expression of the lymphocyte HEV receptor. Regulation of the expression of the HEV receptor is not likely to reflect the transcriptional control of ubiquitin genes, but rather to reflect control of the expression of the HEV core polypeptide or its level or form of ubiquitination.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉St John, T -- Gallatin, W M -- Siegelman, M -- Smith, H T -- Fried, V A -- Weissman, I L -- AI19512/AI/NIAID NIH HHS/ -- CA 09151/CA/NCI NIH HHS/ -- GM 31461/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1986 Feb 21;231(4740):845-50.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3003914" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Amino Acid Sequence ; Animals ; Antibodies, Monoclonal/*immunology ; Antibody Specificity ; Base Sequence ; Cloning, Molecular ; Endothelium/metabolism ; Gene Expression Regulation ; High Mobility Group Proteins/*genetics ; Lymphatic System/metabolism ; Lymphocytes/*physiology ; Mice ; Receptors, Cell Surface/*genetics/immunology/metabolism ; Ubiquitins/*genetics/immunology/metabolism
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 74
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    Bioavailability of dioxin in soil from a 2,4,5-T manufacturing site (1986)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1986-04-25
    Beschreibung: Dioxin (2,3,7,8-tetrachlorodibenzo-p-dioxin, TCDD) is a highly toxic contaminant produced in the manufacture of phenoxy herbicides. Despite its high TCDD content, soil from a contaminated area associated with a 2,4,5-trichlorophenoxyacetic acid (2,4,5-T) manufacturing site in Newark, New Jersey, did not induce acute toxicity when administered to guinea pigs (the most sensitive species) by gavage. Analysis of liver samples demonstrated low bioavailability of TCDD from this soil. A comparative analysis of soils showed that Soxhlet extraction was necessary for the determination of TCDD on Newark soil, whereas solvent extraction was sufficient for soil from Times Beach, Missouri. The difference in the bioavailability of TCDD from these soils is correlated with TCDD extractability and may be related to the different compositions of the soils.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Umbreit, T H -- Hesse, E J -- Gallo, M A -- New York, N.Y. -- Science. 1986 Apr 25;232(4749):497-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3961492" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): 2,4,5-Trichlorophenoxyacetic Acid/*chemical synthesis ; Animals ; Benzofurans/analysis ; Biological Availability ; *Chemical Industry ; Dioxins/analysis/*metabolism ; Female ; Guinea Pigs ; Male ; New Jersey ; Soil/analysis ; *Soil Pollutants/analysis ; Tetrachlorodibenzodioxin/analysis/*metabolism/toxicity
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 75
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    A physiological role of epidermal growth factor in male reproductive function (1986)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1986-08-29
    Beschreibung: Epidermal growth factor (EGF) stimulates the proliferation of various mammalian cells in culture, but its physiological role is not well defined. In mature male mice, large amounts of EGF are produced in the submandibular gland; it is present in the circulation at approximately 5 nanograms of EGF per milliliter of plasma. Sialoadenectomy (removal of the submandibular glands) decreased the amount of circulating EGF to an undetectable level but did not affect the circulating levels of testosterone or follicle-stimulating hormone. The number of mature sperm in the epididymis decreased by as much as 55 percent; the number of spermatids in the testis decreased by 40 to 50 percent; and the number of spermatocytes increased by about 20 percent. Administration of EGF to sialoadenectomized mice restored both the sperm content of the epididymis and the number of spermatids in the testis to normal. Thus, EGF may play a role in male reproductive function by stimulating the meiotic phase of spermatogenesis.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Tsutsumi, O -- Kurachi, H -- Oka, T -- New York, N.Y. -- Science. 1986 Aug 29;233(4767):975-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3090686" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Dose-Response Relationship, Drug ; Epidermal Growth Factor/pharmacology/*physiology ; Epididymis/drug effects/physiology ; Follicle Stimulating Hormone/physiology ; Genitalia, Male/*physiology ; Luteinizing Hormone/physiology ; Male ; Mice ; Sexual Maturation ; Sperm Count/drug effects ; Spermatogenesis/drug effects ; Spermatozoa/physiology ; Submandibular Gland/physiology ; Testis/drug effects
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 76
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    Nuclear and mitochondrial DNA comparisons reveal extreme rate variation in the molecular clock (1986)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1986-10-10
    Beschreibung: The discovery that the rate of evolution of vertebrate mitochondrial DNA is rapid, compared to the rate for vertebrate nuclear DNA, has resulted in its widespread use in evolutionary studies. Comparison of mitochondrial and nuclear DNA divergences among echinoid and vertebrate taxa of similar ages indicates that the rapid rate of vertebrate mitochondrial DNA evolution is, in part, an artifact of a widely divergent rate of nuclear DNA evolution. This disparity in relative rates of mitochondrial and nuclear DNA divergence suggests that the controls and constraints under which the mitochondrial and nuclear genomes operate are evolving independently, and provides evidence that is independent of fossil dating for a robust rejection of a generalized molecular clock hypothesis of DNA evolution.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Vawter, L -- Brown, W M -- GM30144/GM/NIGMS NIH HHS/ -- RR07050/RR/NCRR NIH HHS/ -- New York, N.Y. -- Science. 1986 Oct 10;234(4773):194-6.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3018931" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Base Sequence ; *Biological Evolution ; *Dna ; DNA Restriction Enzymes ; *DNA, Mitochondrial ; Humans ; Primates/genetics ; Sea Urchins/*genetics ; Species Specificity
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 77
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    Pertussis toxin gene: nucleotide sequence and genetic organization (1986)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1986-06-06
    Beschreibung: The current pertussis vaccines, although efficacious, in some instances produce undesirable side effects. Molecular engineering of pertussis toxin, the major protective antigen, could provide a safer, new generation of vaccines against whooping cough. As a first critical step in the development of such a vaccine, the complete nucleotide sequence of the pertussis toxin gene was determined and the amino acid sequences of the individual subunits were deduced. All five subunits are coded by closely linked cistrons. A promoter-like structure was found in the 5'-flanking region, suggesting that the toxin is expressed through a polycistronic messenger RNA. The order of the cistrons is S1, S2, S4, S5, and S3. All subunits contain signal peptides of variable length. The calculated molecular weights of the mature subunits are 26,024 for S1, 21,924 for S2, 21,873 for S3, 12,058 for S4, and 11,013 for S5. Subunits S2 and S3 share 70% amino acid homology and 75% nucleotide homology. Subunit S1 contains two regions of eight amino acids homologous to analogous regions in the A subunit of both cholera and Escherichia coli heat labile toxins.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Locht, C -- Keith, J M -- New York, N.Y. -- Science. 1986 Jun 6;232(4755):1258-64.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3704651" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Amino Acid Sequence ; Base Sequence ; Genes ; Molecular Weight ; *Pertussis Toxin ; Virulence Factors, Bordetella/*genetics
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 78
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    A deletion truncating the gonadotropin-releasing hormone gene is responsible for hypogonadism in the hpg mouse (1986)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1986-12-12
    Beschreibung: Hereditary hypogonadism in the hypogonadal (hpg) mouse is caused by a deletional mutation of at least 33.5 kilobases encompassing the distal half of the gene for the common biosynthetic precursor of gonadotropin-releasing hormone (GnRH) and GnRH-associated peptide (GAP). The partially deleted gene is transcriptionally active as revealed by in situ hybridization histochemistry of hpg hypothalamic tissue sections, but immunocytochemical analysis failed to show the presence of antigen corresponding to any part of the precursor protein.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Mason, A J -- Hayflick, J S -- Zoeller, R T -- Young, W S 3rd -- Phillips, H S -- Nikolics, K -- Seeburg, P H -- New York, N.Y. -- Science. 1986 Dec 12;234(4782):1366-71.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3024317" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Base Sequence ; Brain Chemistry ; Chromosome Deletion ; Chromosome Mapping ; DNA Restriction Enzymes/metabolism ; Gonadotropin-Releasing Hormone/*genetics ; Histocytochemistry ; Hypogonadism/*genetics ; Mice ; Nucleic Acid Hybridization ; Protein Precursors/*genetics ; Transcription, Genetic
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 79
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    First success with reverse genetics (1986)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1986-07-11
    Beschreibung: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lewin, R -- New York, N.Y. -- Science. 1986 Jul 11;233(4760):159-60.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3726528" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Genes ; Granulomatous Disease, Chronic/*genetics ; Humans ; Male
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 80
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    Proposal to sequence the human genome stirs debate (1986)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1986-06-27
    Beschreibung: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lewin, R -- New York, N.Y. -- Science. 1986 Jun 27;232(4758):1598-600.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3715466" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Base Sequence ; *Chromosomes, Human ; DNA/*genetics ; Humans
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 81
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    The 1985 Nobel Prize in physiology or medicine (1986)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1986-01-10
    Beschreibung: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Motulsky, A G -- New York, N.Y. -- Science. 1986 Jan 10;231(4734):126-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3510453" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Adult ; Arteriosclerosis/therapy ; Cholesterol/blood/metabolism ; Endocytosis ; History, 20th Century ; Humans ; Hyperlipoproteinemia Type II/genetics/therapy ; Lipoproteins/metabolism ; Male ; Middle Aged ; Mutation ; *Nobel Prize ; Receptors, LDL/genetics ; United States
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 82
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    CNS and hypoderm regulatory elements of the Drosophila melanogaster dopa decarboxylase gene (1986)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1986-11-21
    Beschreibung: Expression of the dopa decarboxylase gene (Ddc) is regulated in a tissue- and developmental stage-specific manner throughout the life cycle of the fruit fly, Drosophila melanogaster. Essential Ddc regulatory elements lie within 208 base pairs upstream from the RNA start point. Functional elements within this 5' flanking region were mapped by deletion analysis, which assayed expression in vivo after germline integration via P element vectors. One of the elements is essential for expression in both the larval and adult central nervous system, and at least two other elements are necessary for quantitatively normal expression in the hypoderm. Within each of the intervals that have regulatory effects are found sequence elements conserved between the Ddc genes of two distantly related species of flies. On the basis of this correlation, regulatory functions for these sequence elements can be postulated.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Scholnick, S B -- Bray, S J -- Morgan, B A -- McCormick, C A -- Hirsh, J -- New York, N.Y. -- Science. 1986 Nov 21;234(4779):998-1002.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3095924" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Aromatic-L-Amino-Acid Decarboxylases/*genetics ; Base Sequence ; Central Nervous System/physiology ; Dopa Decarboxylase/*genetics ; Drosophila melanogaster/*genetics/growth & development ; *Gene Expression Regulation ; Genes
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 83
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    A balanced translocation in mice with a neurological defect (1986)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1986-01-24
    Beschreibung: A semisterile male translocation heterozygote [t(2; 14) 1Gso] that exhibited neurological symptoms and an inability to swim (diver) was found among the offspring of male mice treated with triethylenemelamine. All breeding and cytogenetic data showed a complete concordance between translocation heterozygosity and the neurological disorders. Homozygosity for the translocation seemed to be lethal at an early embryonic stage. Despite the distinctive neurologic symptoms, no anatomic or histological defects in either the ear or in the central nervous system were observed. Thus, a balanced chromosomal translocation can produce disease with an inheritance pattern that mimics a single dominant gene defect.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Rutledge, J C -- Cain, K T -- Cacheiro, N L -- Cornett, C V -- Wright, C G -- Generoso, W M -- New York, N.Y. -- Science. 1986 Jan 24;231(4736):395-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3941902" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Chromosome Mapping ; Female ; Heterozygote ; Humans ; Male ; Mice ; Mice, Inbred C3H ; Mice, Inbred C57BL ; Mice, Neurologic Mutants/*genetics ; Muscular Dystrophies/genetics ; *Translocation, Genetic ; Triethylenemelamine/pharmacology
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
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  • 84
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    Regulation by growth hormone of number of chondrocytes containing IGF-I in rat growth plate (1986)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1986-08-01
    Beschreibung: Whether growth hormone stimulates longitudinal bone growth by a direct effect at the site of the growth plate or indirectly by increasing the concentration of circulating somatomedins (insulin-like growth factors) has been the subject of controversy. Immunohistochemical methods were used to explore the localization and distribution of insulin-like growth factor I (IGF-I) immunoreactivity in the epiphyseal growth plate of the proximal tibia of male rats. Cells in the proliferative zone of the growth plate of normal rats exhibited a bright immunofluorescence, whereas cells in the germinal and hypertrophic zones stained only weakly. In rats subjected to hypophysectomy, the number of fluorescent cells was markedly reduced. When the hypophysectomized rats were treated with growth hormone, either systemically or at the site of the growth plate, the number of IGF-I-immunoreactive cells in the proliferative zone was increased. The results show that IGF-I is produced in proliferative chondrocytes in the growth plate and that the number of IGF-I-containing cells is directly regulated by growth hormone. These findings suggest that IGF-I has a specific role in the clonal expansion of differentiated chondrocytes and exerts its function locally through autocrine or paracrine mechanisms.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Nilsson, A -- Isgaard, J -- Lindahl, A -- Dahlstrom, A -- Skottner, A -- Isaksson, O G -- New York, N.Y. -- Science. 1986 Aug 1;233(4763):571-4.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3523759" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Fluorescent Antibody Technique ; Growth Hormone/pharmacology/*physiology ; Growth Plate/*cytology/drug effects/growth & development ; Hypophysectomy ; Insulin-Like Growth Factor I/pharmacology/*physiology ; Male ; Rats ; Rats, Inbred Strains ; Somatomedins/*physiology ; Tibia
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 85
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    Study estimates higher risk from ethylene oxide exposure (1986)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1986-01-31
    Beschreibung: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Sun, M -- New York, N.Y. -- Science. 1986 Jan 31;231(4737):448.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3941909" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Air Pollutants, Occupational/*toxicity ; Animals ; Ethylene Oxide/*toxicity ; Female ; Humans ; Male ; Mice ; Pregnancy ; Risk ; *Teratogens ; United States ; United States Occupational Safety and Health Administration
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
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  • 86
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    Transmission of a female sex pheromone thwarted by males in the spider Linyphia litigiosa (Linyphiidae) (1986)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1986-07-11
    Beschreibung: When a male Sierra dome spider (Linyphia litigiosa) encounters a virgin female that has been sexually mature for 7 to 10 days, he rapidly packs the silk of her web into a tight mass. This behavior hinders evaporation of a male-attractant chemical that such highly receptive females apply to their webs. The male thereby reduces the likelihood that his mating partner will attract rival males.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Watson, P J -- 5T32MH15793/MH/NIMH NIH HHS/ -- New York, N.Y. -- Science. 1986 Jul 11;233(4760):219-21.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3726530" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Copulation/physiology ; Female ; Male ; Pheromones/*physiology ; Sex Attractants/*physiology ; Spiders/*physiology
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 87
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    Females' choice of "good genotypes" as mates is promoted by an insect mating system (1986)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1986-09-12
    Beschreibung: Can animal mating systems result in the choice of mates carrying genotypes that are otherwise favored by natural selection? This question is addressed by studying, in natural populations of Colias butterflies, how the phosphoglucose isomerase (PGI) enzyme genotype of males mating Colias females varies with degree of female mate discrimination. Certain PGI genotypes (as predicted from their biochemical properties) have been found previously to have an advantage in diverse fitness-related properties: flight capacity, survivorship, and overall mating success. It is shown here that males of these same genotypes have even greater advantage in remating older, more discriminating females than they do in mating previously unmated, less discriminating females. Assortative mating is not found and thus cannot explain this effect. The mating system of these insects does, at least in this case, result in active female choice of generally favorable male genotypes as mates.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Watt, W B -- Carter, P A -- Donohue, K -- GM 26758/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1986 Sep 12;233(4769):1187-90.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3738528" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Butterflies/genetics/*physiology ; Courtship ; Female ; Genotype ; Glucose-6-Phosphate Isomerase/physiology ; Lepidoptera/*physiology ; Male ; Sexual Behavior, Animal/*physiology
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 88
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    Structure and diversity of the human T-cell receptor beta-chain variable region genes (1986)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1986-08-22
    Beschreibung: In order to characterize the variability of the expressed human T-cell receptor (TCR) beta-chain repertoire and contrast this variability to the known murine beta-chain repertoire, 15 independent complementary DNA (cDNA) clones containing TCR beta-chain variable region (V beta) genes were isolated from a human tonsil cDNA library. The nucleotide and derived amino acid sequences of these 15 V beta genes were analyzed together with 7 previously defined sequences. Fifteen different human V beta genes could be identified from 22 independent sequences. By means of DNA hybridization and sequence homology comparisons, it was possible to group these 15 genes into ten distinct V beta subfamilies, each containing from one to seven members. Minimal polymorphism was noted between individuals, except in multimember subfamilies. The amino acid sequences of these genes contain conserved amino acids that are also shared by murine TCR V beta genes and immunoglobulins; no features were found that distinguish human V beta genes from their murine counterparts. Evaluation of secondary structure showed that maximum variability coincides with generally hydrophilic portions of the amino acid sequence, while specific hydrophobic regions were conserved in all V beta genes examined.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Tillinghast, J P -- Behlke, M A -- Loh, D Y -- 2-T32-AI00112/AI/NIAID NIH HHS/ -- GM 07200/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1986 Aug 22;233(4766):879-83.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3755549" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Amino Acid Sequence ; Base Sequence ; Dna ; Genes ; Humans ; Nucleic Acid Hybridization ; Polymorphism, Genetic ; Receptors, Antigen, T-Cell/*genetics
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 89
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    CD8+ lymphocytes can control HIV infection in vitro by suppressing virus replication (1986)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1986-12-19
    Beschreibung: Lymphocytes bearing the CD8 marker were shown to suppress replication of human immunodeficiency virus (HIV) in peripheral blood mononuclear cells. The effect was dose-dependent and most apparent with autologous lymphocytes; it did not appear to be mediated by a cytotoxic response. This suppression of HIV replication could be demonstrated by the addition of CD8+ cells at the initiation of virus production as well as after several weeks of virus replication by cultured cells. The observations suggest a potential approach to therapy in which autologous CD8 lymphocytes could be administered to individuals to inhibit HIV replication and perhaps progression of disease.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Walker, C M -- Moody, D J -- Stites, D P -- Levy, J A -- New York, N.Y. -- Science. 1986 Dec 19;234(4783):1563-6.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2431484" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Acquired Immunodeficiency Syndrome/*immunology/therapy ; Antigens, Surface ; Cells, Cultured ; HIV/immunology/*physiology ; Humans ; Male ; RNA-Directed DNA Polymerase/metabolism ; T-Lymphocytes/*immunology ; *Virus Replication
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 90
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    Translocation of protein kinase C activity may mediate hippocampal long-term potentiation (1986)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1986-02-07
    Beschreibung: Protein kinase C activity in rat hippocampal membranes and cytosol was determined 1 minute and 1 hour after induction of the synaptic plasticity of long-term potentiation. At 1 hour after long-term potentiation, but not at 1 minute, protein kinase C activity was increased twofold in membranes and decreased proportionately in cytosol, suggesting translocation of the activity. This time-dependent redistribution of enzyme activity was directly related to the persistence of synaptic plasticity, suggesting a novel mechanism regulating the strength of synaptic transmission.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Akers, R F -- Lovinger, D M -- Colley, P A -- Linden, D J -- Routtenberg, A -- MH25281/MH/NIMH NIH HHS/ -- New York, N.Y. -- Science. 1986 Feb 7;231(4738):587-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3003904" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Cell Membrane/enzymology ; Cytosol/enzymology ; Enzyme Activation ; Hippocampus/*enzymology/physiology ; Male ; Neuronal Plasticity ; Protein Kinase C/metabolism/*physiology ; Rats ; Synaptic Membranes/enzymology ; Synaptic Transmission
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 91
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    The brain nucleus locus coeruleus: restricted afferent control of a broad efferent network (1986)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1986-11-07
    Beschreibung: Dense, focal injections of wheat germ agglutinin conjugated-horseradish peroxidase in the locus coeruleus of rats labeled afferent neurons in unexpectedly few brain regions. Major inputs emanate from only two nuclei--the paragigantocellularis and the prepositus hypoglossi, both in the rostral medulla. The dorsal cap of the paraventricular hypothalamic nucleus and the spinal intermediate gray are possible minor afferents to locus coeruleus. Other areas reported to project to locus coeruleus (for example, amygdala, nucleus tractus solitarius, and spinal dorsal horn) did not exhibit consistent retrograde labeling. Anterograde tracing and electrophysiologic experiments confirmed the absence of input to locus coeruleus from these areas, which instead terminate in targets adjacent to locus coeruleus. These findings redefine the anatomic organization of the locus coeruleus, and have implications for hypotheses concerning the functions of this noradrenergic brain nucleus.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Aston-Jones, G -- Ennis, M -- Pieribone, V A -- Nickell, W T -- Shipley, M T -- NS20643/NS/NINDS NIH HHS/ -- NS22320/NS/NINDS NIH HHS/ -- NS23348/NS/NINDS NIH HHS/ -- etc. -- New York, N.Y. -- Science. 1986 Nov 7;234(4777):734-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3775363" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Afferent Pathways ; Animals ; Efferent Pathways ; Electric Stimulation ; Locus Coeruleus/anatomy & histology/*physiology ; Male ; Medulla Oblongata/cytology ; Paraventricular Hypothalamic Nucleus/cytology ; Rats ; Spinal Cord/cytology ; Wheat Germ Agglutinins
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 92
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    Parvalbumin in most gamma-aminobutyric acid-containing neurons of the rat cerebral cortex (1986)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1986-02-28
    Beschreibung: gamma-Aminobutyric acid (GABA) is one of the major inhibitory neurotransmitters in the central nervous system. In the cerebral cortex, GABA-containing cells represent a subpopulation of interneurons. With semithin frozen sections, it is possible to demonstrate that most GABA neurons in the rat somatosensory cortex contain the calcium-binding protein parvalbumin and that parvalbumin is found virtually only in GABA neurons. Parvalbumin seems to influence the electrical properties and enzymatic machinery to modulate neuronal excitability and activity. The specific role of parvalbumin in GABA-containing cortical cells may be related to controlling the effectiveness of their inhibitory action.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Celio, M R -- New York, N.Y. -- Science. 1986 Feb 28;231(4741):995-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3945815" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Cerebral Cortex/analysis/*cytology ; Electrophysiology ; Male ; Muscle Proteins/*analysis ; Neurons/*analysis/physiology ; Parvalbumins/*analysis ; Rats ; gamma-Aminobutyric Acid/*physiology
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 93
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    Molecular cloning of the chicken progesterone receptor (1986)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1986-08-15
    Beschreibung: To define the functional domains of the progesterone receptor required for gene regulation, complementary DNA (cDNA) clones encoding the chicken progesterone receptor have been isolated from a chicken oviduct lambda gt11 cDNA expression library. Positive clones expressed antigenic determinants that cross-reacted with six monospecific antibodies derived from two independent sources. A 36-amino acid peptide sequence obtained by microsequencing of purified progesterone receptor was encoded by nucleotide sequences in the longest cDNA clone. Analysis of the amino acid sequence of the progesterone receptor deduced from the cDNA clones revealed a cysteine-rich region that was homologous to a region found in the estrogen and glucocorticoid receptors and to the avian erythroblastosis virus gag-erb-A fusion protein. Northern blot analysis with chicken progesterone receptor cDNA's indicated the existence of at least three messenger RNA species. These messages were found only in oviduct and could be induced by estrogens.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Conneely, O M -- Sullivan, W P -- Toft, D O -- Birnbaumer, M -- Cook, R G -- Maxwell, B L -- Zarucki-Schulz, T -- Greene, G L -- Schrader, W T -- O'Malley, B W -- New York, N.Y. -- Science. 1986 Aug 15;233(4765):767-70.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2426779" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Amino Acid Sequence ; Animals ; Antibodies, Monoclonal ; Base Sequence ; Chickens ; *Cloning, Molecular ; Cross Reactions ; DNA/*metabolism ; Epitopes/analysis ; Female ; *Genes ; Humans ; Nucleic Acid Hybridization ; Oviducts/metabolism ; RNA, Messenger/genetics ; Receptors, Progesterone/*genetics ; Species Specificity
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 94
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    Multiple, distinct forms of bovine and human protein kinase C suggest diversity in cellular signaling pathways (1986)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1986-08-22
    Beschreibung: A new family of protein kinase C-related genes has been identified in bovine, human, and rat genomes. The alpha-, beta-, and gamma-type protein kinase sequences are highly homologous, include a kinase domain, and potential calcium-binding sites, and they contain interspersed variable regions. The corresponding genes are located on distinct human chromosomes; the possibility of even greater genetic complexity of this gene family is suggested by Northern and Southern hybridization analyses.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Coussens, L -- Parker, P J -- Rhee, L -- Yang-Feng, T L -- Chen, E -- Waterfield, M D -- Francke, U -- Ullrich, A -- New York, N.Y. -- Science. 1986 Aug 22;233(4766):859-66.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3755548" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Base Sequence ; Cattle ; Chromosome Mapping ; Chromosomes, Human, 16-18 ; Dna ; Genes ; Humans ; Nucleic Acid Hybridization ; Protein Kinase C/*genetics ; Rats
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 95
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    Role of platelet-activating factor-acether in mediating guinea pig anaphylaxis (1986)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1986-04-04
    Beschreibung: The pathophysiology of anaphylaxis is very complex, and the sequelae of events are not fully explained in terms of the effects of histamine and peptide leukotrienes alone. Platelet-activating factor (1-O-alkyl-2-acetyl-sn-glyceryl-3-phosphorylcholine, PAF-acether) has been detected in animals undergoing anaphylaxis. Injection of synthetic PAF-acether induces similar effects, including bronchoconstriction, respiratory arrest, systemic hypotension, neutropenia, and thrombocytopenia. The results reported here demonstrate that the histamine- and leukotriene-independent component of guinea pig anaphylaxis in vivo and in isolated lung parenchymal strips in vitro is mediated by PAF-acether. However, PAF-acether is not responsible for the anaphylaxis-induced thrombocytopenia.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Darius, H -- Lefer, D J -- Smith, J B -- Lefer, A M -- HL-25575/HL/NHLBI NIH HHS/ -- New York, N.Y. -- Science. 1986 Apr 4;232(4746):58-60.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3082008" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): 4,5-Dihydro-1-(3-(trifluoromethyl)phenyl)-1H-pyrazol-3-amine ; Alprazolam ; *Anaphylaxis ; Animals ; Anti-Inflammatory Agents/pharmacology ; Benzodiazepines/pharmacology ; Blood Pressure ; Diphenhydramine/pharmacology ; Guinea Pigs ; In Vitro Techniques ; Kinetics ; Lung/drug effects/*immunology ; Male ; Ovalbumin ; Platelet Activating Factor/*immunology ; Platelet Count/drug effects ; Pyrazoles/pharmacology
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 96
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    Design of sequence-specific DNA-binding molecules (1986)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1986-04-25
    Beschreibung: Base sequence information can be stored in the local structure of right-handed double-helical DNA (B-DNA). The question arises as to whether a set of rules for the three-dimensional readout of the B-DNA helix can be developed. This would allow the design of synthetic molecules that bind DNA of any specific sequence and site size. There are four stages of development for each new synthetic sequence-specific DNA-binding molecule: design, synthesis, testing for sequence specificity, and reevaluation of the design. This approach has produced bis(distamycin)fumaramide, a synthetic, crescent-shaped oligopeptide that binds nine contiguous adenine-thymine base pairs in the minor groove of double-helical DNA.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Dervan, P B -- GM-27681/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1986 Apr 25;232(4749):464-71.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2421408" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Base Sequence ; Bisbenzimidazole/metabolism ; DNA/genetics/*metabolism ; Dactinomycin/metabolism ; Distamycins/metabolism ; Edetic Acid/analogs & derivatives/metabolism ; Iron/metabolism ; Models, Chemical ; Netropsin/metabolism ; *Organometallic Compounds ; Pyrroles/metabolism ; Structure-Activity Relationship
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 97
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    A turning point in cancer research: sequencing the human genome (1986)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1986-03-07
    Beschreibung: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Dulbecco, R -- New York, N.Y. -- Science. 1986 Mar 7;231(4742):1055-6.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3945817" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Base Sequence ; *Chromosomes, Human ; Humans ; Neoplasms/*genetics ; *Oncogenes
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 98
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    T-lymphocyte priming and protection against Friend leukemia by vaccinia-retrovirus env gene recombinant (1986)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1986-11-07
    Beschreibung: The current prevalence of the acquired immune deficiency syndrome in humans has provoked renewed interest in methods of protective immunization against retrovirus-induced diseases. In this study, a vaccinia-retrovirus recombinant vector was constructed to study mechanisms of immune protection against Friend virus leukemia in mice. The envelope (env) gene from Friend murine leukemia virus (F-MuLV) was inserted into the genome of a vaccinia virus expression vector. Infected cells synthesized gp85, the glycosylated primary product of the env gene. Processing to gp70 and p15E, and cell surface localization, were similar to that occurring in cells infected with F-MuLV. Mice inoculated with live recombinant vaccinia virus had an envelope-specific T-cell proliferative response and, after challenge with Friend virus complex, developed neutralizing antibody and cytotoxic T cells (CTL) and were protected against leukemia. In contrast, unimmunized and control groups developed a delayed neutralizing antibody response, but no detectable CTL, and succumbed to leukemia. Genes of the major histocompatibility complex influenced protection induced by the vaccinia recombinant but not that induced by attenuated N-tropic Friend virus.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Earl, P L -- Moss, B -- Morrison, R P -- Wehrly, K -- Nishio, J -- Chesebro, B -- New York, N.Y. -- Science. 1986 Nov 7;234(4777):728-31.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3490689" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Antibodies, Viral/immunology ; Antigens/*immunology ; DNA, Recombinant ; Female ; Friend murine leukemia virus/genetics/immunology ; *Genes, Viral ; Leukemia, Erythroblastic, Acute/prevention & control ; Leukemia, Experimental/*prevention & control ; Lymphocyte Activation ; Male ; Mice ; Mice, Inbred Strains ; Sex Factors ; Spleen/microbiology ; T-Lymphocytes/*immunology ; T-Lymphocytes, Cytotoxic/immunology ; Vaccines, Synthetic/*immunology ; Vaccinia virus/genetics/immunology ; Viral Envelope Proteins/genetics/*immunology ; Viral Vaccines/*immunology
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 99
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    Genetic control of melatonin synthesis in the pineal gland of the mouse (1986)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1986-01-31
    Beschreibung: Pineal melatonin may play an important role in regulation of vertebrate circadian rhythms and in human affective disorders. In some mammals, such as hamsters and sheep, melatonin is involved in photoperiodic time measurement and in control of reproduction. Although wild mice (Mus domesticus) and some wild-derived inbred strains of mice have melatonin in their pineal glands, several inbred strains of laboratory mice (for example, C57BL/6J) were found not to have detectable melatonin in their pineal glands. Genetic analysis suggests that melatonin deficiency in C57BL/6J mice results from mutations in two independently segregating, autosomal recessive genes. Synthesis of melatonin from serotonin in the pineal gland requires the enzymes N-acetyltransferase (NAT) and hydroxyindole-O-methyltransferase (HIOMT). Pineal glands from C57BL/6J mice have neither NAT nor HIOMT activity. These results suggest that the two genes involved in melatonin deficiency are responsible for the absence of normal NAT and HIOMT enzyme activity.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Ebihara, S -- Marks, T -- Hudson, D J -- Menaker, M -- 13162/PHS HHS/ -- FO5TW03377/TW/FIC NIH HHS/ -- New York, N.Y. -- Science. 1986 Jan 31;231(4737):491-3.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3941912" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Chromatography, High Pressure Liquid ; Female ; Kinetics ; Male ; Melatonin/biosynthesis/deficiency/*genetics ; Mice ; Mice, Inbred C57BL ; Mice, Inbred Strains ; Pineal Gland/*metabolism ; Reference Values ; Species Specificity
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 100
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    Lactate transporter defect: a new disease of muscle (1986)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1986-12-05
    Beschreibung: New methods were used to identify the abnormality in a patient who showed evidence of neuromuscular dysfunction on extensive clinical examination. The methods revealed that the lactate content of the patient's skeletal muscle does not decline normally after exercise and that his red cells are defective in lactate transport. These results suggest that skeletal muscle and erythrocyte membranes share the same genetic lactate transporter (or a common subunit), which is deficient in this patient. This defect may be a common cause of elevated serum creatine kinase levels, as seen in the patient described here and of unexplained episodes of rhabdomyolysis and myoglobinuria.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Fishbein, W N -- New York, N.Y. -- Science. 1986 Dec 5;234(4781):1254-6.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3775384" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Adult ; Carrier Proteins/*metabolism ; Creatine Kinase/blood ; Erythrocyte Membrane/metabolism ; Erythrocytes/analysis ; Humans ; Lactates/blood/*metabolism ; Male ; Monocarboxylic Acid Transporters ; Muscular Diseases/*metabolism ; Physical Exertion
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
    Standort Signatur Erwartet Verfügbarkeit
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