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  • Rats  (84)
  • Base Sequence  (62)
  • American Association for the Advancement of Science (AAAS)  (141)
  • Periodicals Archive Online (PAO)
  • Wiley
  • 2020-2022
  • 2005-2009
  • 1985-1989  (141)
  • 1965-1969
  • 1935-1939
  • 1986  (141)
Collection
Keywords
Publisher
  • American Association for the Advancement of Science (AAAS)  (141)
  • Periodicals Archive Online (PAO)
  • Wiley
Years
  • 2020-2022
  • 2005-2009
  • 1985-1989  (141)
  • 1965-1969
  • 1935-1939
Year
  • 1
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    Nerve growth factor gene expression in the developing rat brain (1986)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1986-10-17
    Description: The regulation of nerve growth factor (NGF) protein and NGF messenger RNA (mRNA) in the developing rat brain has been studied to assess the hypothesis that NGF supports the differentiation of cholinergic neurons in the basal forebrain. In the adult, the major targets of these neurons, the hippocampus and neocortex, contain the highest concentrations of NGF mRNA, but comparatively low ratios of NGF protein to its mRNA. In contrast, a high concentration of NGF protein and a low concentration of NGF mRNA were seen in the basal forebrain, consistent with retrograde transport of NGF protein into this region from the neocortex and hippocampus. In these two target regions NGF and NGF mRNA were barely detectable at birth, their concentrations increased to a peak at day 21, and then NGF mRNA, but not NGF protein, declined threefold by day 35. NGF accumulation in the basal forebrain paralleled that in the target regions and preceded an increase in choline acetyltransferase, suggesting that the differentiation of cholinergic projection neurons is indeed regulated by retrogradely transported NGF. In addition, high ratios of NGF protein to NGF mRNA, comparable to that in the basal forebrain, were seen in the olfactory bulb and cerebellum, suggesting that NGF may be transported into these regions by unidentified neurons.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Large, T H -- Bodary, S C -- Clegg, D O -- Weskamp, G -- Otten, U -- Reichardt, L F -- NS21824/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 1986 Oct 17;234(4774):352-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3764415" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Brain/*growth & development/metabolism ; Brain Chemistry ; Cerebellum/analysis ; Cerebral Cortex/analysis ; Hippocampus/analysis ; Nerve Growth Factors/analysis/*biosynthesis/genetics ; RNA, Messenger/analysis ; Rats ; Rats, Inbred Strains
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 2
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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
    Publication Date: 1986-10-03
    Description: 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〉
    Keywords: Animals ; Base Sequence ; Cattle ; DNA/genetics ; Fluorescent Antibody Technique ; Membrane Proteins/genetics/*physiology ; Photoreceptor Cells/*metabolism ; Transducin
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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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
    Publication Date: 1986-11-07
    Description: 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〉
    Keywords: 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
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 4
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    Gonadotroph-specific expression of metallothionein fusion genes in pituitaries of transgenic mice (1986)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1986-02-28
    Description: Transgenic mice expressing a metallothionein-somatostatin fusion gene contain high concentrations of somatostatin in the anterior pituitary gland, a tissue that does not normally produce somatostatin. Immunoreactive somatostatin within the anterior pituitaries was found exclusively within gonadotrophs. Similarly, a metallothionein-human growth-hormone fusion gene was also expressed selectively in gonadotrophs. It is proposed that sequences common to the two fusion genes are responsible for the gonadotroph-specific expression.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Low, M J -- Lechan, R M -- Hammer, R E -- Brinster, R L -- Habener, J F -- Mandel, G -- Goodman, R H -- AM 01313/AM/NIADDK NIH HHS/ -- AM 30457/AM/NIADDK NIH HHS/ -- AM 31400/AM/NIADDK NIH HHS/ -- etc. -- New York, N.Y. -- Science. 1986 Feb 28;231(4741):1002-4.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2868526" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; DNA, Recombinant/metabolism ; Genes ; Genetic Engineering ; Humans ; Immunoenzyme Techniques ; Luteinizing Hormone/metabolism ; Metallothionein/*genetics ; Mice ; Pituitary Gland, Anterior/*metabolism ; Rats ; Somatostatin/*genetics/metabolism
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 5
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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
    Publication Date: 1986-09-26
    Description: 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〉
    Keywords: 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
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 6
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    Associative induction of posttetanic and long-term potentiation in CA1 neurons of rat hippocampus (1986)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1986-05-23
    Description: Electrical stimulation of fibers in the stratum radiatum causes an excitatory postsynaptic potential in CA1 neurons of the hippocampus. Other excitatory inputs to or direct depolarization of these CA1 neurons during stimulation of the stratum radiatum caused a subsequent increase in the excitatory postsynaptic potential. This enhancement was characterized as a brief potentiation (2 to 3 minutes, similar to posttetanic potentiation) and a long-term potentiation (presumed to be involved in learning and memory). These potentiations are probably induced by an interaction of the postsynaptic cell or other presynaptic terminals with the test presynaptic terminals.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Sastry, B R -- Goh, J W -- Auyeung, A -- New York, N.Y. -- Science. 1986 May 23;232(4753):988-90.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3010459" target="_blank"〉PubMed〈/a〉
    Keywords: Action Potentials ; Animals ; Brain Mapping ; Calcium/physiology ; Conditioning (Psychology)/physiology ; Electric Stimulation ; Hippocampus/*physiology ; In Vitro Techniques ; Learning/physiology ; Membrane Potentials ; Rats ; Synapses/physiology ; Synaptic Transmission
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 7
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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
    Publication Date: 1986-02-07
    Description: 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〉
    Keywords: 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
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 8
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    Studies on environmental chemical carcinogenesis in Japan (1986)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1986-07-18
    Description: The historical background of studies in Japan on chemical carcinogenesis from environmental sources is described from personal experience.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Sugimura, T -- New York, N.Y. -- Science. 1986 Jul 18;233(4761):312-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3088728" target="_blank"〉PubMed〈/a〉
    Keywords: 4-Nitroquinoline-1-oxide/analysis ; Animals ; Biotransformation ; Carcinogens/*analysis ; Cyanobacteria/analysis ; Environmental Pollution/*analysis ; Food Additives ; Food Handling ; Furylfuramide/toxicity ; Health Policy ; Humans ; Indoles/metabolism ; Japan ; Lyngbya Toxins/toxicity ; Methods ; Methylnitronitrosoguanidine/toxicity ; Mutagenicity Tests ; Oncogenes ; Primary Prevention ; Rats ; Risk ; Stereoisomerism ; Stomach Neoplasms/chemically induced ; Streptomyces/analysis ; Structure-Activity Relationship ; Urinary Bladder Neoplasms/chemically induced
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 9
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    Calcium and sodium channels in spontaneously contracting vascular muscle cells (1986)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1986-07-25
    Description: Electrophysiological recordings of inward currents from whole cells showed that vascular muscle cells have one type of sodium channel and two types of calcium channels. One of the calcium channels, the transient calcium channel, was activated by small depolarizations but then rapidly inactivated. It was equally permeable to calcium and barium and was blocked by cadmium, but not by tetrodotoxin. The other type, the sustained calcium channel, was activated by larger depolarizations, but inactivated very little; it was more permeable to barium than calcium. The sustained calcium channel was more sensitive to block by cadmium than the transient channel, but also was not blocked by tetrodotoxin. The sodium channel inactivated 15 times more rapidly than the transient calcium channel and at more negative voltages. This sodium channel, which is unusual because it is only blocked by a very high (60 microM) tetrodotoxin concentration but not by cadmium, is the first to be characterized in vascular muscle, and together with the two calcium channels, provides a basis for different patterns of excitation in vascular muscles.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Sturek, M -- Hermsmeyer, K -- HL 16328/HL/NHLBI NIH HHS/ -- HL 32295/HL/NHLBI NIH HHS/ -- New York, N.Y. -- Science. 1986 Jul 25;233(4762):475-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2425434" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Calcium/*physiology ; Ion Channels/*physiology ; Membrane Potentials ; *Muscle Contraction ; Muscle, Smooth, Vascular/*physiology ; Rats ; Rats, Inbred WKY ; Sodium/*physiology
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 10
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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
    Publication Date: 1986-05-09
    Description: 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〉
    Keywords: 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
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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