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  • Cells, Cultured  (27)
  • American Association for the Advancement of Science (AAAS)  (27)
  • American Geophysical Union (AGU)
  • 2015-2019
  • 1985-1989  (27)
  • 1945-1949
  • 1986  (27)
Collection
Keywords
Publisher
  • American Association for the Advancement of Science (AAAS)  (27)
  • American Geophysical Union (AGU)
Years
  • 2015-2019
  • 1985-1989  (27)
  • 1945-1949
Year
  • 1
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    Coronavirus infection induces H-2 antigen expression on oligodendrocytes and astrocytes (1986)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1986-05-23
    Description: Infection of the central nervous system by mouse hepatitis virus strain A59, a murine neurotropic coronavirus, induces class I major histocompatibility complex antigens on mouse oligodendrocytes and astrocytes, cells that do not normally express these antigens on their surfaces. This induction, which occurs through soluble factors elaborated by infected glial cells, potentially allows immunocytes to interact with the glial cells and may play a critical role in the pathogenesis of virus-induced, immune-mediated demyelination in the central nervous system.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Suzumura, A -- Lavi, E -- Weiss, S R -- Silberberg, D H -- NS11037/NS/NINDS NIH HHS/ -- NS21954/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 1986 May 23;232(4753):991-3.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3010460" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Astrocytes/*immunology ; Cells, Cultured ; Fluorescent Antibody Technique ; H-2 Antigens/*immunology ; Hepatitis, Viral, Animal/*immunology ; Macrophages/immunology ; Mice ; Murine hepatitis virus/immunology ; Neuroglia/*immunology ; Oligodendroglia/*immunology
    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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  • 2
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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
    Publication Date: 1986-08-15
    Description: 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〉
    Keywords: 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
    Print ISSN: 0036-8075
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  • 3
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    Induction of membrane ruffling and fluid-phase pinocytosis in quiescent fibroblasts by ras proteins (1986)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1986-09-05
    Description: Expression of the ras oncogene is thought to be one of the contributing events in the initiation of certain types of human cancer. To determine the cellular activities that are directly triggered by ras proteins, the early consequences of microinjection of the human H-ras proteins into quiescent rat embryo fibroblasts were investigated. Within 30 minutes to 1 hour after injection, cells show a marked increase in surface ruffles and fluid-phase pinocytosis. The rapid enhancement of membrane ruffling and pinocytosis is induced by both the proto-oncogenic and the oncogenic forms of the H-ras protein. The effects produced by the oncogenic protein persist for more than 15 hours after injection, whereas the effects of the proto-oncogenic protein are short-lived, being restricted to a 3-hour interval after injection. The stimulatory effect of the ras oncogene protein on ruffling and pinocytosis is dependent on the amount of injected protein and is accompanied by an apparent stimulation of phospholipase A2 activity. These rapid changes in cell membrane activities induced by ras proteins may represent primary events in the mechanism of action of ras proteins.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Bar-Sagi, D -- Feramisco, J R -- CA07896/CA/NCI NIH HHS/ -- CA39811/CA/NCI NIH HHS/ -- GM28277/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1986 Sep 5;233(4768):1061-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3090687" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cell Cycle/drug effects ; Cell Membrane/*drug effects/ultrastructure ; Cells, Cultured ; Culture Media ; DNA/biosynthesis ; GTP-Binding Proteins/*pharmacology ; Humans ; Microinjections ; Oncogene Proteins, Viral/*pharmacology ; Phospholipases A/metabolism ; Phospholipases A2 ; Phospholipids/metabolism ; Pinocytosis/*drug effects ; Rats ; Time Factors
    Print ISSN: 0036-8075
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  • 4
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    Neurosciences advance in basic and clinical realms (1986)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1986-12-12
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Barnes, D M -- New York, N.Y. -- Science. 1986 Dec 12;234(4782):1324-6.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2431480" target="_blank"〉PubMed〈/a〉
    Keywords: Alzheimer Disease/*diagnosis/pathology ; Animals ; Brain/pathology ; Cells, Cultured ; Glutamates/pharmacology ; Glutamic Acid ; Humans ; Ion Channels/*physiology ; Mollusca ; Neurons/drug effects ; Neurotransmitter Agents/*physiology ; Time Factors
    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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  • 5
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    Induction of the c-fos oncogene by thyrotropic hormone in rat thyroid cells in culture (1986)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1986-07-25
    Description: Rat thyroid cells in culture, rendered quiescent by hormone deprivation, can be stimulated to undergo DNA synthesis in the absence of serum by the addition of purified thyrotropin. The primary effect in response to thyrotropin action in thyroid cells is the induction of the c-fos oncogene, followed by c-myc expression. This suggests that thyrotropin acts as a competence growth factor.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Colletta, G -- Cirafici, A M -- Vecchio, G -- New York, N.Y. -- Science. 1986 Jul 25;233(4762):458-60.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3726540" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cattle ; Cell Division/drug effects ; Cells, Cultured ; Cycloheximide/pharmacology ; DNA/biosynthesis ; Oncogenes/*drug effects ; Rats ; Thyroid Gland/*cytology/drug effects/metabolism ; Thyrotropin/*pharmacology
    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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  • 6
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    Inhibition of endothelial regeneration by type-beta transforming growth factor from platelets (1986)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1986-09-05
    Description: Damage to the vessel wall is a signal for endothelial migration and replication and for platelet release at the site of injury. Addition of transforming growth factor-beta (TGF-beta) purified from platelets to growing aortic endothelial cells inhibited [3H]thymidine incorporation in a concentration-dependent manner. A transient inhibition of DNA synthesis was also observed in response to wounding; cell migration and replication are inhibited during the first 24 hours after wounding. By 48 hours after wounding both TGF-beta-treated and -untreated cultures showed similar responses. Flow microfluorimetric analysis of cell cycle distribution indicated that after 24 hours of exposure to TGF-beta the cells were blocked from entering S phase, and the fraction of cells in G1 was increased. The inhibition of the initiation of regeneration by TGF-beta could allow time for recruitment of smooth muscle cells into the site of injury by other platelet components.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Heimark, R L -- Twardzik, D R -- Schwartz, S M -- HL-18645/HL/NHLBI NIH HHS/ -- New York, N.Y. -- Science. 1986 Sep 5;233(4768):1078-80.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3461562" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Blood Platelets/*physiology ; Cell Cycle/drug effects ; Cell Movement/drug effects ; Cells, Cultured ; Endothelium/cytology/*physiology ; Flow Cytometry ; *Growth Inhibitors ; Humans ; In Vitro Techniques ; Peptides/*pharmacology ; Rats ; Regeneration ; Transforming Growth Factors
    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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  • 7
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    New rule proposed for protein degradation (1986)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1986-10-10
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kolata, G -- New York, N.Y. -- Science. 1986 Oct 10;234(4773):151-2.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3018927" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acids/*metabolism ; Cells, Cultured ; Half-Life ; Proteins/*metabolism ; Ubiquitins/metabolism ; beta-Galactosidase/metabolism
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  • 8
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    Stimulation of gonadotropin release by a non-GnRH peptide sequence of the GnRH precursor (1986)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1986-04-04
    Description: The human gonadotropin-releasing hormone (GnRH) precursor comprises the GnRH sequence followed by an extension of 59 amino acids. Basic amino acid residues in the carboxyl terminal extension may represent sites of processing to biologically active peptides. A synthetic peptide comprising the first 13 amino acids (H X Asp-Ala-Glu-Asn-Leu-Ile-Asp-Ser-Phe-Gln-Glu-Ile-Val X OH) of the 59-amino acid peptide was found to stimulate the release of gonadotropic hormones from human and baboon anterior pituitary cells in culture. The peptide did not affect thyrotropin or prolactin secretion. A GnRH antagonist did not inhibit gonadotropin stimulation by the peptide, and the peptide did not compete with GnRH for GnRH pituitary receptors, indicating that the action of the peptide is independent of the GnRH receptor. The GnRH precursor contains two distinct peptide sequences capable of stimulating gonadotropin release from human and baboon pituitary cells.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Millar, R P -- Wormald, P J -- Milton, R C -- New York, N.Y. -- Science. 1986 Apr 4;232(4746):68-70.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3082009" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cells, Cultured ; Follicle Stimulating Hormone/*secretion ; Gonadotropin-Releasing Hormone/*analogs & derivatives/*pharmacology ; Humans ; Kinetics ; Luteinizing Hormone/*secretion ; Papio ; Peptide Fragments/*pharmacology ; Peptides/*pharmacology ; Pituitary Gland, Anterior/drug effects/*secretion ; Protein Precursors/*pharmacology ; Structure-Activity Relationship
    Print ISSN: 0036-8075
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  • 9
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    Pertussis toxin-sensitive pathway in the stimulation of c-myc expression and DNA synthesis by bombesin (1986)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1986-11-28
    Description: The bombesin-like peptides are potent mitogens for Swiss 3T3 fibroblasts, human bronchial epithelial cells, and cells isolated from small cell carcinoma of the lung. The mechanism of signal transduction in the proliferative response to bombesin was investigated by studying the effect of Bordetella pertussis toxin on bombesin-stimulated mitogenesis. At nanomolar concentrations, bombesin increased levels of c-myc messenger RNA and stimulated DNA synthesis in Swiss 3T3 cells. Treatment of the cells with pertussis toxin (5 nanograms per milliliter) completely blocked bombesin-enhanced c-myc expression and eliminated bombesin-stimulated DNA synthesis. This treatment had essentially no effect on the mitogenic responses to either platelet-derived growth factor or phorbol 12,13-dibutyrate. These results suggest that the mitogenic actions of bombesin-like growth factors are mediated through a pertussis toxin-sensitive guanine nucleotide-binding protein. Furthermore they indicate that bombesin-like growth factors act through pathways that are different from those activated by platelet-derived growth factor.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Letterio, J J -- Coughlin, S R -- Williams, L T -- R01 HL 32898/HL/NHLBI NIH HHS/ -- New York, N.Y. -- Science. 1986 Nov 28;234(4780):1117-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3465038" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Bombesin/*pharmacology ; Cells, Cultured ; DNA, Neoplasm/*biosynthesis ; Humans ; Mice ; Oncogenes/*drug effects ; *Pertussis Toxin ; Phorbol 12,13-Dibutyrate ; Phorbol Esters/pharmacology ; Platelet-Derived Growth Factor/pharmacology ; Virulence Factors, Bordetella/*pharmacology
    Print ISSN: 0036-8075
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  • 10
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    Cultivation of Rhinosporidium seeberi in vitro: interaction with epithelial cells (1986)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1986-10-24
    Description: Rhinosporidium seeberi, a fungus that is associated with polyp-like tumors in animals and man, was successfully cultivated. This organism stimulated proliferation of epithelial cells in vitro, producing polyp-like structures. Spores produced in culture required a period of aging or development, or both, before they were capable of reinitiating the growth cycle.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Levy, M G -- Meuten, D J -- Breitschwerdt, E B -- New York, N.Y. -- Science. 1986 Oct 24;234(4775):474-6.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3764422" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cell Cycle ; Cells, Cultured ; Dogs ; Epithelium/microbiology ; Humans ; Polyps/microbiology ; Rhinosporidium/*growth & development
    Print ISSN: 0036-8075
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  • 11
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    Replication of the B19 parvovirus in human bone marrow cell cultures (1986)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1986-08-22
    Description: The B19 parvovirus is responsible for at least three human diseases. The virus was successfully propagated in suspension cultures of human erythroid bone marrow from patients with hemolytic anemias; release of newly synthesized virus into the supernatants of infected cultures was observed. This culture system allowed study at a molecular level of events associated with the B19 life cycle. The B19 parvovirus replicated through high molecular weight intermediate forms, linked through a terminal hairpin structure. B19 replication in vitro was highly dependent on the erythropoietic content of cultures and on addition of the hormone erythropoietin.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Ozawa, K -- Kurtzman, G -- Young, N -- New York, N.Y. -- Science. 1986 Aug 22;233(4766):883-6.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3738514" target="_blank"〉PubMed〈/a〉
    Keywords: Anemia, Hemolytic/*microbiology ; Bone Marrow/*microbiology ; Cells, Cultured ; Culture Media ; DNA, Viral/analysis ; Erythropoietin/metabolism ; Humans ; Parvoviridae/*growth & development ; Virus Replication
    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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  • 12
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    A blood vessel model constructed from collagen and cultured vascular cells (1986)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1986-01-24
    Description: A model of a blood vessel was constructed in vitro. Its multilayered structure resembled that of an artery and it withstood physiological pressures. Electron microscopy showed that the endothelial cells lining the lumen and the smooth muscle cells in the wall were healthy and well differentiated. The lining of endothelial cells functioned physically, as a permeability barrier, and biosynthetically, producing von Willebrand's factor and prostacyclin. The strength of the model depended on its multiple layers of collagen integrated with a Dacron mesh.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Weinberg, C B -- Bell, E -- New York, N.Y. -- Science. 1986 Jan 24;231(4736):397-400.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2934816" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Aorta/anatomy & histology/cytology ; Blood Vessels/*anatomy & histology/physiology ; Cattle ; Cells, Cultured ; Collagen/*physiology ; Endothelium/anatomy & histology/cytology ; Microscopy, Electron, Scanning ; *Models, Cardiovascular ; Muscle, Smooth, Vascular/anatomy & histology/cytology ; Polyethylene Terephthalates
    Print ISSN: 0036-8075
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  • 13
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    A parathyroid hormone-like protein from cultured human keratinocytes (1986)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1986-01-24
    Description: Parathyroid hormone-like factors have been found in extracts of tumors associated with humoral hypercalcemia of malignancy, many of which are of squamous epithelial origin. Cultured, nonmalignant human keratinocytes were examined for the production of similar factors. Keratinocyte-conditioned medium from ten cultures stimulated the production of cyclic adenosine monophosphate in clonally derived rat osteosarcoma cells sensitive to parathyroid hormone. Bovine [Nle8,18, Tyr34]PTH-(3-34)NH2, a competitive inhibitor of parathyroid hormone, stopped the adenylate cyclase production stimulated by keratinocyte-conditioned medium, but antisera to parathyroid hormone had no effect on such adenylate cyclase activity. The active component of keratinocyte-conditioned medium has a molecular weight exceeding that of native parathyroid hormone. These characteristics are shared by the parathyroid hormone receptor agonists associated with humoral hypercalcemia of malignancy, which suggests that normal human keratinocytes may produce a factor related to that produced by malignant tumors associated with humoral hypercalcemia of malignancy.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Merendino, J J Jr -- Insogna, K L -- Milstone, L M -- Broadus, A E -- Stewart, A F -- AM 30102/AM/NIADDK NIH HHS/ -- New York, N.Y. -- Science. 1986 Jan 24;231(4736):388-90.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2417317" target="_blank"〉PubMed〈/a〉
    Keywords: Adenylyl Cyclases/metabolism ; Animals ; Cattle ; Cells, Cultured ; Cyclic AMP/metabolism ; Epidermis/*cytology/metabolism/physiology ; Humans ; Isoproterenol/pharmacology ; Keratins/*metabolism ; Mice ; Osteosarcoma/metabolism ; Parathyroid Hormone/pharmacology/*physiology ; Peptide Fragments/pharmacology ; Rats ; Teriparatide
    Print ISSN: 0036-8075
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  • 14
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    A critical period for macromolecular synthesis in long-term heterosynaptic facilitation in Aplysia (1986)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1986-12-05
    Description: Both long-term and short-term sensitization of the gill and siphon withdrawal reflex in Aplysia involve facilitation of the monosynaptic connections between the sensory and motor neurons. To analyze the relationship between these two forms of synaptic facilitation at the cellular and molecular level, this monosynaptic sensorimotor component of the gill-withdrawal reflex of Aplysia can be reconstituted in dissociated cell culture. Whereas one brief application of 1 microM serotonin produced short-term facilitation in the sensorimotor connection that lasted minutes, five applications over 1.5 hours resulted in long-term facilitation that lasted more than 24 hours. Inhibitors of protein synthesis or RNA synthesis selectively blocked long-term facilitation, but not short-term facilitation, indicating that long-term facilitation requires the expression of gene products not essential for short-term facilitation. Moreover, the inhibitors only blocked long-term facilitation when given during the serotonin applications; the inhibitors did not block the facilitation when given either before or after serotonin application. These results parallel those for behavioral performance in vertebrates and indicate that the critical time window characteristic of the requirement for macromolecular synthesis in long-term heterosynaptic facilitation is not a property of complex circuitry, but an intrinsic characteristic of specific nerve cells and synaptic connections involved in the long-term storage of information.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Montarolo, P G -- Goelet, P -- Castellucci, V F -- Morgan, J -- Kandel, E R -- Schacher, S -- NS 19595/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 1986 Dec 5;234(4781):1249-54.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3775383" target="_blank"〉PubMed〈/a〉
    Keywords: Amanitins/pharmacology ; Anisomycin/pharmacology ; Aplysia/*physiology ; Cells, Cultured ; Memory/*physiology ; Memory, Short-Term/physiology ; Motor Neurons/drug effects ; Neurons, Afferent/drug effects ; Protein Biosynthesis ; RNA, Messenger/biosynthesis ; Reflex/drug effects ; Serotonin/pharmacology
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  • 15
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    Long-term cultures of HTLV-III--infected T cells: a model of cytopathology of T-cell depletion in AIDS (1986)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1986-02-21
    Description: Long-term cultures were established of HTLV-III-infected T4 cells from patients with the acquired immune deficiency syndrome (AIDS) and of T4 cells from normal donors after infection of the cells in vitro. By initially reducing the number of cells per milliliter of culture medium it was possible to grow the infected cells for 50 to 60 days. As with uninfected T cells, immunologic activation of the HTLV-III-infected cells with phytohemagglutinin led to patterns of gene expression typical of T-cell differentiation, such as production of interleukin-2 and expression of interleukin-2 receptors, but in the infected cells immunologic activation also led to expression of HTLV-III, which was followed by cell death. The results revealed a cytopathogenic mechanism that may account for T4 cell depletion in AIDS patients and suggest how repeated antigenic stimulation by infectious agents, such as malaria in Africa, or by allogeneic blood or semen, may be important determinants of the latency period in AIDS.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Zagury, D -- Bernard, J -- Leonard, R -- Cheynier, R -- Feldman, M -- Sarin, P S -- Gallo, R C -- New York, N.Y. -- Science. 1986 Feb 21;231(4740):850-3.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2418502" target="_blank"〉PubMed〈/a〉
    Keywords: Acquired Immunodeficiency Syndrome/immunology/microbiology/*pathology ; Antigens, Differentiation, T-Lymphocyte ; Antigens, Surface/analysis ; Cell Differentiation ; Cells, Cultured ; Cytopathogenic Effect, Viral ; Deltaretrovirus/*growth & development ; Gene Expression Regulation ; Humans ; Interleukin-2/biosynthesis ; RNA-Directed DNA Polymerase/metabolism ; Receptors, Immunologic/biosynthesis ; Receptors, Interleukin-2 ; T-Lymphocytes/immunology/*microbiology
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  • 16
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    Nerve activity alters neurotransmitter synthesis (1986)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1986-06-20
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Marx, J L -- New York, N.Y. -- Science. 1986 Jun 20;232(4757):1500-1.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2872725" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Brain/physiology ; Cells, Cultured ; Neurons/cytology/*metabolism ; Neurotransmitter Agents/*biosynthesis ; Peripheral Nerves/physiology
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  • 17
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    Caffeine-induced uncoupling of mitosis from the completion of DNA replication in mammalian cells (1986)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1986-06-06
    Description: Caffeine was shown to induce mitotic events in mammalian cells before DNA replication (S phase) was completed. Synchronized BHK cells that were arrested in early S phase underwent premature chromosome condensation, nuclear envelope breakdown, morphological "rounding up," and mitosis-specific phosphoprotein synthesis when they were exposed to caffeine. These mitotic responses occurred only after the cells had entered S phase and only while DNA synthesis was inhibited by more than 70 percent. Inhibitors of protein synthesis blocked these caffeine-induced events, while inhibitors of RNA synthesis had little effect. These results suggest that caffeine induces the translation or stabilizes the protein product (or products) of mitosis-related RNA that accumulates in S-phase cells when DNA replication is suppressed. The ability to chemically manipulate the onset of mitosis should be useful for studying the regulation of this event in mammalian cells.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Schlegel, R -- Pardee, A B -- CA 22427/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1986 Jun 6;232(4755):1264-6.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2422760" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Caffeine/*pharmacology ; Cells, Cultured ; Cricetinae ; Cycloheximide/pharmacology ; *DNA Replication ; Dactinomycin/pharmacology ; Interphase ; Mitosis/*drug effects ; RNA/metabolism
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  • 18
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    Steroid hormone metabolites are barbiturate-like modulators of the GABA receptor (1986)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1986-05-23
    Description: Two metabolites of the steroid hormones progesterone and deoxycorticosterone, 3 alpha-hydroxy-5 alpha-dihydroprogesterone and 3 alpha, 5 alpha-tetrahydrodeoxycorticosterone, are potent barbiturate-like ligands of the gamma-aminobutyric acid (GABA) receptor-chloride ion channel complex. At concentrations between 10(-7) and 10(-5)M both steroids inhibited binding of the convulsant t-butylbicyclophosphorothionate to the GABA-receptor complex and increased the binding of the benzodiazepine flunitrazepam; they also stimulated chloride uptake (as measured by uptake of 36Cl-) into isolated brain vesicles, and potentiated the inhibitory actions of GABA in cultured rat hippocampal and spinal cord neurons. These data may explain the ability of certain steroid hormones to rapidly alter neuronal excitability and may provide a mechanism for the anesthetic and hypnotic actions of naturally occurring and synthetic anesthetic steroids.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Majewska, M D -- Harrison, N L -- Schwartz, R D -- Barker, J L -- Paul, S M -- New York, N.Y. -- Science. 1986 May 23;232(4753):1004-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2422758" target="_blank"〉PubMed〈/a〉
    Keywords: 20-alpha-Dihydroprogesterone/*analogs & derivatives/metabolism/pharmacology ; Animals ; Bicyclo Compounds/metabolism ; *Bicyclo Compounds, Heterocyclic ; Binding, Competitive ; Brain/metabolism ; Cells, Cultured ; Chlorides/metabolism ; Desoxycorticosterone/*analogs & derivatives/metabolism/pharmacology ; Drug Synergism ; Flunitrazepam/metabolism ; Hippocampus/metabolism ; In Vitro Techniques ; Ion Channels/metabolism ; Progesterone/*analogs & derivatives/metabolism/pharmacology ; Rats ; Receptors, GABA-A/*drug effects/metabolism ; Spinal Cord/metabolism
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  • 19
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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
    Publication Date: 1986-12-19
    Description: 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〉
    Keywords: 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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  • 20
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    Suppression of neurite elongation and growth cone motility by electrical activity (1986)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1986-06-27
    Description: Electrical activity may regulate a number of neuronal functions in addition to its role in transmitting signals along nerve cells. The hypothesis that electrical activity affects neurite elongation in sprouting neurons was tested by stimulating individual snail neurons isolated in cell culture. The findings demonstrated that growth cone advance, and thus neurite elongation, is reversibly stopped during periods when action potentials are experimentally evoked. A decrease in filopodial number and growth cone area was also observed. Thus, action potentials can mediate the cessation of neurite outgrowth and thereby may influence structure and connectivity within the nervous system.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Cohan, C S -- Kater, S B -- HD18577/HD/NICHD NIH HHS/ -- NS15350/NS/NINDS NIH HHS/ -- NS21217/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 1986 Jun 27;232(4758):1638-40.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3715470" target="_blank"〉PubMed〈/a〉
    Keywords: Action Potentials ; Axons/*physiology ; Cells, Cultured ; Electrophysiology ; Neurons/physiology ; Snails ; Synapses/physiology
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  • 21
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    The role of mononuclear phagocytes in HTLV-III/LAV infection (1986)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1986-07-11
    Description: Cells with properties characteristic of mononuclear phagocytes were evaluated for infectivity with five different isolates of the AIDS virus, HTLV-III/LAV. Mononuclear phagocytes cultured from brain and lung tissues of AIDS patients harbored the virus. In vitro-infected macrophages from the peripheral blood, bone marrow, or cord blood of healthy donors produced large quantities of virus. Virus production persisted for at least 40 days and was not dependent on host cell proliferation. Giant multinucleated cells were frequently observed in the macrophage cultures and numerous virus particles, often located within vacuole-like structures, were present in infected cells. The different virus isolates were compared for their ability to infect macrophages and T cells. Isolates from lung- and brain-derived macrophages had a significantly higher ability to infect macrophages than T cells. In contrast, the prototype HTLV-III beta showed a 10,000-fold lower ability to infect macrophages than T cells and virus production was one-tenth that in macrophage cultures infected with other isolates, indicating that a particular variant of HTLV-III/LAV may have a preferential tropism for macrophages or T cells. These results suggest that mononuclear phagocytes may serve as primary targets for infection and agents for virus dissemination and that these virus-infected cells may play a role in the pathogenesis of the disease.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Gartner, S -- Markovits, P -- Markovitz, D M -- Kaplan, M H -- Gallo, R C -- Popovic, M -- New York, N.Y. -- Science. 1986 Jul 11;233(4760):215-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3014648" target="_blank"〉PubMed〈/a〉
    Keywords: Acquired Immunodeficiency Syndrome/*immunology ; Brain/cytology ; Cells, Cultured ; Child ; DNA, Viral/genetics ; Deltaretrovirus/isolation & purification ; Humans ; Lung/cytology ; Macrophages/physiology ; Nucleic Acid Hybridization ; Phagocytes/*physiology
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  • 22
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    Neuroleukin: a lymphokine product of lectin-stimulated T cells (1986)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1986-10-31
    Description: Neuroleukin is a lymphokine product of lectin-stimulated T cells that induces immunoglobulin secretion by cultured human peripheral blood mononuclear cells. Neuroleukin acts early in the in vitro response that leads to formation of antibody-secreting cells, but continued production of immunoglobulin by differentiated antibody-secreting cells is neuroleukin-independent. Although the factor is not directly mitogenic, cellular proliferation is a late component of the response to neuroleukin. Neuroleukin does not have B-cell growth factor (BCGF) or B-cell differentiation factor (BCDF) activity in defined assays. Neuroleukin-evoked induction of immunoglobulin secretion is both monocyte- and T-cell-dependent.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Gurney, M E -- Apatoff, B R -- Spear, G T -- Baumel, M J -- Antel, J P -- Bania, M B -- Reder, A T -- 5PO1 NS24412/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 1986 Oct 31;234(4776):574-81.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3020690" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; B-Lymphocytes/drug effects/physiology ; Bone Marrow/metabolism ; Cell Line ; Cells, Cultured ; Deltaretrovirus/genetics ; Glucose-6-Phosphate Isomerase ; Growth Substances/genetics/pharmacology/*physiology ; Humans ; Immunity, Cellular/drug effects ; Immunoglobulins/biosynthesis ; Lectins/pharmacology ; Leukemia/metabolism ; Lymphokines/genetics/pharmacology/*physiology ; Lymphoma/metabolism ; Mice ; Pokeweed Mitogens/pharmacology ; Sequence Homology, Nucleic Acid ; T-Lymphocytes/drug effects/*physiology
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  • 23
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    Sequence and expression of human estrogen receptor complementary DNA (1986)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1986-03-07
    Description: The mechanism by which the estrogen receptor and other steroid hormone receptors regulate gene expression in eukaryotic cells is not well understood. In this study, a complementary DNA clone containing the entire translated portion of the messenger RNA for the estrogen receptor from MCF-7 human breast cancer cells was sequenced and then expressed in Chinese hamster ovary (CHO-K1) cells to give a functional protein. An open reading frame of 1785 nucleotides in the complementary DNA corresponded to a polypeptide of 595 amino acids and a molecular weight of 66,200, which is in good agreement with published molecular weight values of 65,000 to 70,000 for the estrogen receptor. Homogenates of transformed Chinese hamster ovary cells containing a protein that bound [3H]estradiol and sedimented as a 4S complex in salt-containing sucrose gradients and as an 8 to 9S complex in the absence of salt. Interaction of this receptor-[3H]estradiol complex with a monoclonal antibody that is specific for primate ER confirms the identity of the expressed complementary DNA as human estrogen receptor. Amino acid sequence comparisons revealed significant regional homology among the human estrogen receptor, the human glucocorticoid receptor, and the putative v-erbA oncogene product. This suggests that steroid receptor genes and the avian erythroblastosis viral oncogene are derived from a common primordial gene. The homologous region, which is rich in cysteine, lysine, and arginine, may represent the DNA-binding domain of these proteins.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Greene, G L -- Gilna, P -- Waterfield, M -- Baker, A -- Hort, Y -- Shine, J -- CA-02897/CA/NCI NIH HHS/ -- HD17103/HD/NICHD NIH HHS/ -- New York, N.Y. -- Science. 1986 Mar 7;231(4742):1150-4.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3753802" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Amino Acids/analysis ; Antibodies, Monoclonal ; Base Sequence ; Cells, Cultured ; Cloning, Molecular ; DNA/*metabolism ; Female ; Humans ; Molecular Weight ; Receptors, Estrogen/*genetics ; Transformation, Genetic
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  • 24
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    Molecular cloning and expression of neuroleukin, a neurotrophic factor for spinal and sensory neurons (1986)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1986-10-31
    Description: A novel 56,000-dalton growth factor found in mouse salivary gland was purified, molecularly cloned, and expressed in monkey COS cells. The protein is a neurotrophic factor and also, surprisingly, a lymphokine product of lectin-stimulated T cells. The factor was therefore named neuroleukin. Neuroleukin promotes the survival in culture of a subpopulation of embryonic spinal neurons that probably includes skeletal motor neurons. Neuroleukin also supports the survival of cultured sensory neurons that are insensitive to nerve growth factor, but has no effect on sympathetic or parasympathetic neurons. The amino acid sequence of neuroleukin is partly homologous to a highly conserved region of the external envelope protein of HTLV-III/LAV, the retrovirus that causes acquired immune deficiency syndrome.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Gurney, M E -- Heinrich, S P -- Lee, M R -- Yin, H S -- 5PO1 NS-21442/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 1986 Oct 31;234(4776):566-74.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3764429" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Cells, Cultured ; Chick Embryo ; Cloning, Molecular ; DNA/genetics ; Glucose-6-Phosphate Isomerase ; Growth Substances/genetics/*physiology ; Lymphokines/genetics/*physiology ; Male ; Mice ; Mice, Inbred BALB C ; Motor Neurons/drug effects ; Muscles/innervation ; Nerve Growth Factors/genetics/isolation & purification/*physiology ; Neurons/drug effects ; Neurons, Afferent/drug effects ; Salivary Glands/metabolism ; Spinal Cord/cytology
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  • 25
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    Cell line segregation during peripheral nervous system ontogeny (1986)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1986-03-28
    Description: The peripheral nervous system of vertebrates arises from the neural crest and the ectodermal placodes. Construction of quail-chick chimaeras has provided significant information on the migration and fate of the neural crest and placodal cells. Transplantation of neural crest tissue to various sites in these chimaeras has demonstrated that the differentiation of neural crest cells is controlled by environmental influences during their migration and, particularly, during gangliogenesis. Experiments with in vitro and monoclonal antibody techniques have shown that these environmental cues act on a heterogeneous population of neural crest cells whose developmental potencies are partly restricted to definite differentiation pathways.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Le Douarin, N M -- New York, N.Y. -- Science. 1986 Mar 28;231(4745):1515-22.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3952494" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antibodies, Monoclonal ; Cell Differentiation ; Cells, Cultured ; Chick Embryo ; Chimera ; Coturnix/embryology ; Ganglia/cytology/*embryology/growth & development ; Neural Crest/cytology/immunology/*physiology/transplantation ; Neuronal Plasticity ; Peripheral Nerves/*embryology
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  • 26
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    Plant phenolic compounds induce expression of the Agrobacterium tumefaciens loci needed for virulence (1986)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1986-05-23
    Description: The virulence loci of Agrobacterium tumefaciens are a set of linked transcriptional units that play an essential role in the early stages of plant tumorigenesis. These loci are induced upon cocultivation of the bacteria with plant cells. Seven phenolic compounds that are widely distributed among the angiosperm plants--catechol, gallic acid, pyrogallic acid, p-hydroxybenzoic acid, protocatechuic acid, beta-resorcylic acid, and vanillin--are able to induce the expression of the virulence loci. These phenolics in combination induce each transcriptional locus of the vir loci. Furthermore, this induction displays similar kinetics and genetic control to that observed during cocultivation of the bacteria with plant cells.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Bolton, G W -- Nester, E W -- Gordon, M P -- R01 GM32618/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1986 May 23;232(4753):983-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3085219" target="_blank"〉PubMed〈/a〉
    Keywords: Cells, Cultured ; Culture Media ; Dose-Response Relationship, Drug ; Gene Expression Regulation/drug effects ; Genetic Engineering ; Phenols/*pharmacology ; Rhizobium/*genetics/pathogenicity ; beta-Galactosidase/genetics
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  • 27
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    Control of cachectin (tumor necrosis factor) synthesis: mechanisms of endotoxin resistance (1986)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1986-05-23
    Description: Cachectin (tumor necrosis factor) is a macrophage hormone strongly implicated in the pathogenesis of endotoxin-induced shock. The availability of a DNA probe complementary to the cachectin messenger RNA (mRNA), as well as a specific antibody capable of recognizing the cachectin gene product, has made it possible to analyze the regulation of cachectin gene expression under a variety of conditions. Thioglycollate-elicited peritoneal macrophages obtained from mice contain a pool of cachectin mRNA that is not expressed as protein. When the cells are stimulated with endotoxin, large quantity of additional cachectin mRNA is produced, and immunoreactive cachectin is secreted. Macrophages from mice of the C3H/HeJ strain do not produce cachectin in response to endotoxin. A dual defect appears to prevent cachectin expression. First, a diminished quantity of cachectin mRNA is expressed in response to low concentrations of endotoxin. Second, a post-transcriptional defect prevents the production of cachectin protein. Macrophages from endotoxin-sensitive mice do not produce cachectin if they are first treated with dexamethasone, apparently for similar reasons. These findings give new insight into the nature of the C3H/HeJ mutation and suggest an important mechanism by which glucocorticoids may act to suppress inflammation.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Beutler, B -- Krochin, N -- Milsark, I W -- Luedke, C -- Cerami, A -- AI21359/AI/NIAID NIH HHS/ -- AM01314/AM/NIADDK NIH HHS/ -- New York, N.Y. -- Science. 1986 May 23;232(4753):977-80.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3754653" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cells, Cultured ; Dexamethasone/pharmacology ; Drug Resistance ; Endotoxins/*pharmacology ; Gene Expression Regulation/drug effects ; In Vitro Techniques ; Macrophages/drug effects/*metabolism ; Mice ; Mice, Inbred C3H/physiology ; *Protein Biosynthesis ; Proteins/genetics ; RNA, Messenger/metabolism ; Transcription, Genetic/drug effects ; Tumor Necrosis Factor-alpha
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