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  • Cell Line  (22)
  • Middle Aged  (7)
  • Kinetics
  • American Association for the Advancement of Science (AAAS)  (30)
  • Cambridge University Press
  • Societe Geologique de France
  • 2000-2004
  • 1980-1984  (30)
  • 1984  (30)
Collection
Keywords
Publisher
  • American Association for the Advancement of Science (AAAS)  (30)
  • Cambridge University Press
  • Societe Geologique de France
  • Springer  (3)
Years
  • 2000-2004
  • 1980-1984  (30)
Year
  • 1
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    A new type D retrovirus isolated from macaques with an immunodeficiency syndrome (1984)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1984-02-10
    Description: Macaque monkeys with the recently described acquired immunodeficiency syndrome show a marked defect in T-lymphocyte function and die with opportunistic infections and lymphoproliferative abnormalities. In the study described here a new type D retrovirus was isolated from two Macaca cyclopis with this syndrome. This virus is related to, but distinct from, Mason-Pfizer monkey virus, a type D retrovirus previously isolated from a mammary tumor of a rhesus monkey (Macaca mulatta).〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Daniel, M D -- King, N W -- Letvin, N L -- Hunt, R D -- Sehgal, P K -- Desrosiers, R C -- R01-A1 20729/PHS HHS/ -- RR00168/RR/NCRR NIH HHS/ -- New York, N.Y. -- Science. 1984 Feb 10;223(4636):602-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6695172" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Burkitt Lymphoma ; Cell Line ; Humans ; Immunologic Deficiency Syndromes/*microbiology ; Macaca ; Nucleic Acid Hybridization ; Retroviridae/genetics/immunology/*isolation & purification
    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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    Transfusion-associated AIDS: serologic evidence of human T-cell leukemia virus infection of donors (1984)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1984-03-23
    Description: An assay for antibodies to membrane antigens of cells infected by human T-cell leukemia virus was used to examine serum from persons who donated blood to 12 patients with acquired immunodeficiency syndrome (AIDS) associated with blood transfusions. The occurrence of positive results in the assay was significantly greater among donors to the AIDS patients (9 of 117; 7.7 percent) than among random donors (1 of 298; 0.3 percent). Of 12 sets of donors examined, 9 sets included a donor whose serum gave positive results for the presence of the antibodies. In six of these nine sets, the seropositive donor was an individual who was also identified as a possible source of AIDS transmission when epidemiologic and immunologic criteria were used.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Jaffe, H W -- Francis, D P -- McLane, M F -- Cabradilla, C -- Curran, J W -- Kilbourne, B W -- Lawrence, D N -- Haverkos, H W -- Spira, T J -- Dodd, R Y -- New York, N.Y. -- Science. 1984 Mar 23;223(4642):1309-12.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6322301" target="_blank"〉PubMed〈/a〉
    Keywords: Acquired Immunodeficiency Syndrome/*etiology/immunology/transmission ; Adult ; Aged ; Antibodies, Viral/*analysis ; Antigens, Surface/immunology ; Antigens, Viral/immunology ; *Blood Donors ; Blood Transfusion/*adverse effects ; Deltaretrovirus/immunology/*pathogenicity ; Female ; Homosexuality ; Humans ; Male ; Middle Aged ; Retroviridae/*immunology ; Retroviridae Infections/*epidemiology ; Risk
    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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    Blood pressure and nutrient intake in the United States (1984)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1984-06-29
    Description: A data base of the National Center for Health Statistics, Health and Nutrition Examination Survey I (HANES I), was used to perform a computer-assisted, comprehensive analysis of the relation of 17 nutrients to the blood pressure profile of adult Americans. Subjects were 10,372 individuals, 18 to 74 years of age, who denied a history of hypertension and intentional modification of their diet. Significant decreases in the consumption of calcium, potassium, vitamin A, and vitamin C were identified as the nutritional factors that distinguished hypertensive from normotensive subjects. Lower calcium intake was the most consistent factor in hypertensive individuals. Across the population, higher intakes of calcium, potassium, and sodium were associated with lower mean systolic blood pressure and lower absolute risk of hypertension. Increments of dietary calcium were also negatively correlated with body mass. Even though these correlations cannot be accepted as proof of causation, they have implications for future studies of the association of nutritional factors and dietary patterns with hypertension in America.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉McCarron, D A -- Morris, C D -- Henry, H J -- Stanton, J L -- New York, N.Y. -- Science. 1984 Jun 29;224(4656):1392-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6729459" target="_blank"〉PubMed〈/a〉
    Keywords: Adolescent ; Adult ; Age Factors ; Aged ; Ascorbic Acid/metabolism ; *Blood Pressure/drug effects ; Calcium/metabolism ; Continental Population Groups ; Energy Intake ; Female ; Humans ; Hypertension/metabolism ; Male ; Middle Aged ; National Center for Health Statistics (U.S.) ; Nutrition Surveys ; *Nutritional Physiological Phenomena ; Obesity/metabolism ; Potassium/metabolism ; Sex Factors ; Sodium/metabolism ; United States ; Vitamin A/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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  • 4
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    Identification of the putative transforming protein of the human T-cell leukemia viruses HTLV-I and HTLV-II (1984)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1984-10-05
    Description: The human T-cell leukemia viruses HTLV-I and HTLV-II are unique among the transforming retroviruses of vertebrates in their ability to transform human T cells in vitro and in their close association with human malignancies (T-cell lymphomas and leukemia). Their genomes are relatively simple, containing the genes gag, pol, env, and a 3' region termed "X." This 3' region may be responsible for the transforming potential of the viruses. The existence of proteins encoded by the 3' region has been postulated on the basis of multiple open reading frames. In the present study this region is shown to contain a gene encoding a protein of 40 kilodaltons in HTLV-I and 37 kilodaltons in HTLV-II. It is proposed that these proteins be called, respectively, p40xI and p37xII.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Slamon, D J -- Shimotohno, K -- Cline, M J -- Golde, D W -- Chen, I S -- CA 16042/CA/NCI NIH HHS/ -- CA 32737/CA/NCI NIH HHS/ -- RR 00865/RR/NCRR NIH HHS/ -- New York, N.Y. -- Science. 1984 Oct 5;226(4670):61-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6089351" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; B-Lymphocytes/microbiology ; Cell Line ; *Cell Transformation, Viral ; Deltaretrovirus/analysis/*genetics/physiology ; *Genes, Viral ; Humans ; Immune Sera ; Molecular Weight ; T-Lymphocytes/*microbiology ; Trans-Activators ; Viral Proteins/genetics/immunology/*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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  • 5
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    Site-specific mutagenesis of the human interleukin-2 gene: structure-function analysis of the cysteine residues (1984)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1984-06-29
    Description: The gene encoding human interleukin-2 (IL-2) has been cloned from human spleen cells, peripheral blood lymphocytes, and the Jurkat cell line. Nucleotide sequence analysis of the gene revealed that the encoded IL-2 protein has three cysteines located at amino acid residues 58, 105, and 125 of the mature protein. Site-specific mutagenesis procedures were used to modify the IL-2 gene by changing each of the cysteine codons individually to serine codons. Substitution of serine for cysteine residues at either position 58 or 105 of the IL-2 protein substantially reduced biological activity, indicating that the cysteines at these positions are necessary for maintenance of the biologically active conformation and may therefore be linked by a disulfide bridge. The modified IL-2 protein containing a substitution at position 125 retained full biological activity, suggesting that the cysteine at this position is not involved in a disulfide bond and that a free sulfhydryl group at that position is not necessary for receptor binding.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Wang, A -- Lu, S D -- Mark, D F -- New York, N.Y. -- Science. 1984 Jun 29;224(4656):1431-3.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6427925" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Base Sequence ; Cell Line ; Cysteine/metabolism ; DNA, Recombinant/metabolism ; Escherichia coli/genetics ; Genes ; Humans ; Interleukin-2/*genetics ; *Mutation ; Receptors, Immunologic/metabolism ; Receptors, Interleukin-2 ; Serine/metabolism ; Structure-Activity Relationship
    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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    1,25-dihydroxyvitamin D3: a novel immunoregulatory hormone (1984)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1984-06-29
    Description: The hormonal form of vitamin D3, 1,25-dihydroxyvitamin D3 [1,25(OH)2D3], at picomolar concentrations, inhibited the growth-promoting lymphokine interleukin-2, which is produced by human T lymphocytes activated in vitro by the mitogen phytohemagglutinin. Other metabolites of vitamin D3 were less effective than 1,25(OH)2D3 in suppressing interleukin-2; their order of potency corresponded to their respective affinity for the 1,25(OH)2D3 receptor, suggesting that the effect on interleukin-2 was mediated by this specific receptor. The proliferation of mitogen-activated lymphocytes was also inhibited by 1,25(OH)2D3. This effect of the hormone became more pronounced at later stages of the culture. These findings demonstrate that 1,25(OH)2D3 is an immunoregulatory hormone.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Tsoukas, C D -- Provvedini, D M -- Manolagas, S C -- AM29779/AM/NIADDK NIH HHS/ -- New York, N.Y. -- Science. 1984 Jun 29;224(4656):1438-40.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6427926" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Calcitriol/*pharmacology ; Cell Division/drug effects ; Cell Line ; Humans ; Immunity, Cellular/*drug effects ; Interleukin-2/antagonists & inhibitors ; Lymphocyte Activation/drug effects ; Lymphocytes/drug effects ; Mice ; Monocytes/drug effects ; Receptors, Immunologic/drug effects ; Receptors, Interleukin-2
    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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    Stress hormones: their interaction and regulation (1984)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1984-05-04
    Description: Stress stimulates several adaptive hormonal responses. Prominent among these responses are the secretion of catecholamines from the adrenal medulla, corticosteroids from the adrenal cortex, and adrenocorticotropin from the anterior pituitary. A number of complex interactions are involved in the regulation of these hormones. Glucocorticoids regulate catecholamine biosynthesis in the adrenal medulla and catecholamines stimulate adrenocorticotropin release from the anterior pituitary. In addition, other hormones, including corticotropin-releasing factor, vasoactive intestinal peptide, and arginine vasopressin stimulate while the corticosteroids and somatostatin inhibit adrenocorticotropin secretion. Together these agents appear to determine the complex physiologic responses to a variety of stressors.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Axelrod, J -- Reisine, T D -- New York, N.Y. -- Science. 1984 May 4;224(4648):452-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6143403" target="_blank"〉PubMed〈/a〉
    Keywords: Adenylyl Cyclases/metabolism ; Adrenal Cortex/metabolism ; Adrenal Medulla/metabolism ; Adrenocorticotropic Hormone/*metabolism ; Animals ; Brain/metabolism ; Catecholamines/*metabolism ; Cell Line ; Corticotropin-Releasing Hormone/metabolism ; Cyclic AMP/metabolism ; Glucocorticoids/*metabolism ; Humans ; Phospholipases A/metabolism ; Pituitary Gland, Anterior/metabolism ; Receptors, Adrenergic, alpha/metabolism ; Receptors, Adrenergic, beta/metabolism ; Receptors, Cell Surface/metabolism ; Receptors, Corticotropin-Releasing Hormone ; Receptors, Somatostatin ; Somatostatin/pharmacology ; Stress, Physiological/*metabolism ; Stress, Psychological/metabolism ; Sympathetic Nervous System/metabolism ; Vasoactive Intestinal Peptide/pharmacology ; Vasopressins/pharmacology
    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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    Identification of DNA sequence responsible for 5-bromodeoxyuridine-induced gene amplification (1984)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1984-08-31
    Description: Bromodeoxyuridine (BrdUrd) treatment of the prolactin nonproducing subclone of GH cells (rat pituitary tumor cells) induces amplification of a 20-kilobase DNA fragment including all of the prolactin gene coding sequences. This amplified DNA segment, which is flanked by two unamplified regions, thus designates a unit of BrdUrd-induced amplified sequence. Cloned DNA segments, 10.3 kilobases long, from the 5' end of the rat prolactin gene of BrdUrd-responsive and -nonresponsive cells, were ligated to the thymidine kinase gene of herpes simplex virus type 1 (HSV1TK), and the hybrid DNA was transferred to thymidine kinase-deficient mouse fibroblast cells by transfection. The HSV1TK gene and the rat prolactin gene were amplified together in drug-treated transfectants carrying the hybrid DNA HSV1TK gene and rat prolactin gene of BrdUrd-responsive GH cells. These results suggest that the 10.3-kilobase DNA segment at the 5' end of the rat prolactin gene of BrdUrd-responsive GH cells carries the information for drug-induced gene amplification (amplicon) and that another gene, such as the HSV1TK gene, is also amplified when the latter is placed adjacent to this segment.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Biswas, D K -- Hartigan, J A -- Pichler, M H -- CA28218/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1984 Aug 31;225(4665):941-3.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6089335" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Base Sequence ; Bromodeoxyuridine/*pharmacology ; Cell Line ; Cloning, Molecular ; DNA/*genetics ; DNA, Recombinant ; *Gene Amplification ; Genes, Viral ; Mice ; Prolactin/genetics ; Rats ; Simplexvirus/genetics ; Thymidine Kinase/genetics ; 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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  • 9
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    Chemical mutation of enzyme active sites (1984)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1984-11-02
    Description: New active sites can be introduced into naturally occurring enzymes by the chemical modification of specific amino acid residues with the use of appropriately designed coenzyme analogs. The resultant semisynthetic enzymes can have catalytic activities very different from those of the corresponding native enzymes. For example, papain has been converted into a highly effective oxidoreductase by covalent modification of the sulfhydryl group of the active site cysteine residue (Cys25) with flavins such as 8-bromoacetyl-10-methylisoalloxazine. Thus, it is now possible to enhance the catalytic versatility of existing enzymes through the process of "chemical mutation" of the active site.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kaiser, E T -- Lawrence, D S -- New York, N.Y. -- Science. 1984 Nov 2;226(4674):505-11.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6238407" target="_blank"〉PubMed〈/a〉
    Keywords: Anaerobiosis ; *Binding Sites ; Catalysis ; Chemical Phenomena ; *Chemistry ; Chymotrypsin ; Enzymes/*chemical synthesis ; Flavins ; Kinetics ; NAD/metabolism ; Niacinamide/analogs & derivatives ; Oxidation-Reduction ; Papain ; Stereoisomerism ; Toluene/analogs & derivatives/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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  • 10
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    Purified human granulocyte-macrophage colony-stimulating factor: direct action on neutrophils (1984)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1984-12-14
    Description: Neutrophil migration inhibition factor from T lymphocytes (NIF-T) is a lymphokine that acts to localize granulocytes. Medium conditioned by the Mo human T-lymphoblast cell line was used to purify NIF-T, a glycoprotein with a molecular weight of 22,000. The NIF-T was found to potently stimulate the growth of granulocyte and macrophage colonies from human bone marrow and colony formation by the KG-1 myeloid leukemia cell line. Thus a human lymphokine (NIF-T) that modulates the activities of mature neutrophilic granulocytes is also a colony-stimulating factor acting on precursors to induce growth and differentiation of new effector cells.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Gasson, J C -- Weisbart, R H -- Kaufman, S E -- Clark, S C -- Hewick, R M -- Wong, G G -- Golde, D W -- CA 30280/CA/NCI NIH HHS/ -- CA 30388/CA/NCI NIH HHS/ -- CA 32737/CA/NCI NIH HHS/ -- etc. -- New York, N.Y. -- Science. 1984 Dec 14;226(4680):1339-42.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6390681" target="_blank"〉PubMed〈/a〉
    Keywords: Bone Marrow Cells ; Cell Division ; Cell Line ; Chromatography, High Pressure Liquid ; Colony-Stimulating Factors/*isolation & purification ; Electrophoresis, Polyacrylamide Gel ; Granulocytes/*cytology ; Humans ; Leukocyte Migration-Inhibitory Factors/*pharmacology ; Lymphokines/*pharmacology ; Macrophages/*cytology ; Molecular Weight
    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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