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  • Animals  (441)
  • 1995-1999
  • 1980-1984  (441)
  • 1925-1929
  • 1983  (441)
  • 1
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    Homeostasis of the antibody response: immunoregulation by NK cells (1983)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1983-11-11
    Description: When injected into mice, the synthetic double-stranded polynucleotide poly(inosinic) X poly(cytidylic) acid induces high natural killer (NK) cell activity within 4 to 12 hours. Induction of NK activity in mice immunized 2 or 3 days previously, or the addition of NK cells to cultures immunized in vitro 2 or 3 days previously, promotes early termination of the ongoing primary immunoglobulin M antibody response. A target for NK cells is a population of accessory cells that has interacted with antigen and is necessary for sustaining the antibody response. The inference is strong that NK cells induced normally by immunization also terminate the usual antibody response in vivo by elimination of antigen-exposed accessory cells.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Abruzzo, L V -- Rowley, D A -- 5-T32-CA-09267/CA/NCI NIH HHS/ -- R01-10242/PHS HHS/ -- New York, N.Y. -- Science. 1983 Nov 11;222(4624):581-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6685343" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Antibody Formation ; Antibody-Producing Cells/immunology ; Cells, Cultured ; Homeostasis ; Killer Cells, Natural/*immunology/radiation effects ; Lymphocyte Cooperation ; Lymphocytes/*immunology ; Mice ; Poly I-C/immunology ; Spleen/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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    Peptide cotransmitter at a neuromuscular junction (1983)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1983-07-15
    Description: The neuropeptide proctolin (H-Arg-Tyr-Leu-Pro-Thr-OH) is present in the nerve terminals of an identified slow skeletal motoneuron in the cockroach. Proctolin is released onto the target muscle, a coxal depressor, by neuron stimulation and by depolarization with potassium. The physiological action of the motoneuron suggests that proctolin acts as a cotransmitter. Proctolin and neural stimulation produce delayed and sustained contractile effects without muscle depolarization.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Adams, M E -- O'Shea, M -- NS-16298/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 1983 Jul 15;221(4607):286-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6134339" target="_blank"〉PubMed〈/a〉
    Keywords: Action Potentials ; Animals ; Cockroaches ; Muscle Contraction ; Nerve Endings/physiology ; Neuromuscular Junction/*physiology ; *Neuropeptides ; Neurotransmitter Agents/*physiology ; Oligopeptides/*physiology ; Synaptic Transmission
    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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  • 3
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    Burst discharge in mammalian neuroendocrine cells involves an intrinsic regenerative mechanism (1983)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1983-09-09
    Description: Intracellular recordings from mammalian neuroendocrine cells showed that steady, injected currents can modify and block periodic spike bursts previously associated with increased neurohormone release. Spike afterpotentials could sum to form plateau potentials, which generated bursts and did not depend on axonal conduction or chemical synapses. Therefore, bursting involves a spike-dependent, positive-feedback mechanism endogenous to single neuroendocrine cells.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Andrew, R D -- Dudek, F E -- NS 16877/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 1983 Sep 9;221(4615):1050-2.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6879204" target="_blank"〉PubMed〈/a〉
    Keywords: Action Potentials ; Animals ; *Electrophysiology ; Evoked Potentials ; Feedback ; Hypothalamus/cytology ; In Vitro Techniques ; Membrane Potentials ; Neurosecretory Systems/cytology/*physiology ; Rats ; Tetrodotoxin/pharmacology
    Print ISSN: 0036-8075
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  • 4
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    Primary murine bone marrow cultures support continuous growth of infectious human trypanosomes (1983)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1983-04-22
    Description: The human parasite Trypanosoma brucei gambiense grew continuously at 37 degrees C in primary cultures of murine bone marrow. Cultured parasites remained virulent for mice. Rapid parasite growth coincided with the appearance of adherent adipocyte-epitheloid cell aggregates that also promoted hematopoiesis. This culture system should permit studies of host cell control of trypanosome proliferation, pathogenic effects of trypanosomes on blood cell development, and the relative trypanocidal and marrow suppressive activities of drugs.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Balber, A E -- CA 14049/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1983 Apr 22;220(4595):421-3.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6836284" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Bone Marrow ; Cells, Cultured ; Culture Media ; Humans ; Mice ; Mice, Inbred BALB C ; Trypanosoma brucei brucei/growth & development ; Trypanosoma brucei gambiense/*growth & development ; Trypanosomiasis, African/parasitology
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  • 5
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    Morphological basis of long-term habituation and sensitization in Aplysia (1983)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1983-04-01
    Description: The morphological basis of the persistent synaptic plasticity that underlies long-term habituation and sensitization of the gill withdrawal reflex in Aplysia californica was explored by examining the fine structure of sensory neuron presynaptic terminals (the critical site of plasticity for the short-term forms of both types of learning) in control animals and in animals whose behavior had been modified by training. The number, size, and vesicle complement of sensory neuron active zones were larger in animals showing long-term sensitization than in control animals and smaller in animals showing long-term habituation. These changes are likely to represent an anatomical substrate for the memory consolidation of these tasks.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Bailey, C H -- Chen, M -- GM23540/GM/NIGMS NIH HHS/ -- MH37134-01/MH/NIMH NIH HHS/ -- New York, N.Y. -- Science. 1983 Apr 1;220(4592):91-3.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6828885" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Aplysia/*physiology ; Gills/innervation ; Habituation, Psychophysiologic/*physiology ; Neuronal Plasticity ; Neurons, Afferent/physiology ; Reflex/physiology ; Synapses/ultrastructure ; Synaptic Vesicles/physiology
    Print ISSN: 0036-8075
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  • 6
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    Natural Distribution of the Ixodes dammini spirochete (1983)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1983-04-15
    Description: Spirochetes believed to be the cause of Lyme disease were isolated from white-footed mice and white-tailed deer, the preferred natural hosts of Ixodes dammini, the tick vector. Evidence suggests that deer act as a reservoir of the disease and provide an overwintering mechanism for both spirochetes and adult ticks. Some tick larvae may acquire the spirochete by transovarial passage and the nymphal stage may transmit the disease to humans.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Bosler, E M -- Coleman, J L -- Benach, J L -- Massey, D A -- Hanrahan, J P -- Burgdorfer, W -- Barbour, A G -- New York, N.Y. -- Science. 1983 Apr 15;220(4594):321-2.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6836274" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Arachnid Vectors/microbiology ; Arthritis, Infectious/microbiology/transmission ; Deer/microbiology/parasitology ; Disease Vectors ; Female ; Humans ; Male ; Peromyscus/microbiology/parasitology ; Spirochaetales/*growth & development ; Ticks/*microbiology
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  • 7
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    Regulation of carcinogen metabolism in the rat ovary by the estrous cycle and gonadotropin (1983)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1983-03-25
    Description: The activity of 7,12-dimethylbenz[a]anthracene hydroxylase in the rat ovary is several times higher in the proestrous phase of the estrous cycle than in the estrous and metestrous plus diestrous phases. Administration of gonadotropin leads to a similar increase in the capacity of the ovary to metabolize xenobiotics. This variation in the activity of 7,12-dimethylbenz[a]anthracene hydroxylase during the estrous cycle may be related to the marked changes in the incidence of ovarian cancer during menopause and in women taking contraceptive pills.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Bengtsson, M -- Rydstrom, J -- New York, N.Y. -- Science. 1983 Mar 25;219(4591):1437-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6681915" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Aryl Hydrocarbon Hydroxylases/*metabolism ; Cytochrome P-450 Enzyme System/metabolism ; Epoxide Hydrolases/metabolism ; *Estrus ; Female ; Glutathione Transferase/metabolism ; Gonadotropins, Equine/*pharmacology ; Metestrus ; Ovary/*physiology ; Pregnancy ; Proestrus ; Quinone Reductases/metabolism ; Rats ; Rats, Inbred Strains
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  • 8
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    Time course of alpha-flupenthixol action explains "response artifacts" of neuroleptic action on brain stimulation reward (1983)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1983-12-16
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉New York, N.Y. -- Science. 1983 Dec 16;222(4629):1251-4.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6648532" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Behavior, Animal/drug effects ; Flupenthixol/*pharmacology ; Hypothalamus/*drug effects ; Kinetics ; Rats ; *Reward ; Self Stimulation/*drug effects ; Thioxanthenes/*pharmacology
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  • 9
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    Cancer prevention: setting priorities (1983)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1983-12-09
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉New York, N.Y. -- Science. 1983 Dec 9;222(4628):1072-6.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6648522" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Costs and Cost Analysis ; Humans ; Neoplasms/*prevention & control
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  • 10
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    Alcohol and pregnancy (1983)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1983-09-23
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉New York, N.Y. -- Science. 1983 Sep 23;221(4617):1244-6.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6684327" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Dose-Response Relationship, Drug ; Ethanol/*adverse effects ; Female ; Pregnancy ; Pregnancy, Animal/*drug effects
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  • 11
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    Dietary carcinogens and anticarcinogens. Oxygen radicals and degenerative diseases (1983)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1983-09-23
    Description: The human diet contains a great variety of natural mutagens and carcinogens, as well as many natural antimutagens and anticarcinogens. Many of these mutagens and carcinogens may act through the generation of oxygen radicals. Oxygen radicals may also play a major role as endogenous initiators of degenerative processes, such as DNA damage and mutation (and promotion), that may be related to cancer, heart disease, and aging. Dietary intake of natural antioxidants could be an important aspect of the body's defense mechanism against these agents. Many antioxidants are being identified as anticarcinogens. Characterizing and optimizing such defense systems may be an important part of a strategy of minimizing cancer and other age-related diseases.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Ames, B N -- ES01896/ES/NIEHS NIH HHS/ -- New York, N.Y. -- Science. 1983 Sep 23;221(4617):1256-64.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6351251" target="_blank"〉PubMed〈/a〉
    Keywords: Aging ; Animals ; *Carcinogens/antagonists & inhibitors ; Cocarcinogenesis ; Diet/*adverse effects ; Dietary Fats/adverse effects ; Free Radicals ; Hot Temperature ; Humans ; Lipid Peroxides/adverse effects ; Mutagens ; Oxygen/*toxicity ; Plants, Edible ; Smoking
    Print ISSN: 0036-8075
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  • 12
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    Selective photothermolysis: precise microsurgery by selective absorption of pulsed radiation (1983)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1983-04-29
    Description: Suitably brief pulses of selectively absorbed optical radiation can cause selective damage to pigmented structures, cells, and organelles in vivo. Precise aiming is unnecessary in this unique form of radiation injury because inherent optical and thermal properties provide target selectivity. A simple, predictive model is presented. Selective damage to cutaneous microvessels and to melanosomes within melanocytes is shown after 577-nanometer (3 x 10(-7) second) and 351-nanometer (2 x 10(-8) second) pulses, respectively. Hemodynamic, histological, and ultrastructural responses are discussed.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Anderson, R R -- Parrish, J A -- R01025395/PHS HHS/ -- New York, N.Y. -- Science. 1983 Apr 29;220(4596):524-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6836297" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cricetinae ; Hot Temperature ; Humans ; *Laser Therapy ; Melanins/metabolism ; Melanocytes/ultrastructure ; Microcirculation/surgery ; Microscopy, Electron ; Microsurgery/*methods
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  • 13
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    Independent pathways for secretion of cholesterol and apolipoprotein E by macrophages (1983)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1983-02-18
    Description: Cholesterol-loaded macrophages secrete cholesterol and apolipoprotein E. The current studies show that this secretion occurs by two independent pathways. In the absence of serum, the cells secrete apolipoprotein E, but not cholesterol. In the presence of monensin (an inhibitor of protein secretion), the cells secrete cholesterol, but little apolipoprotein E. After secretion, apolipoprotein E and cholesterol associate with high-density lipoprotein to form a particle that can deliver cholesterol to the liver by receptor-mediated endocytosis. We conclude that apolipoprotein E does not function to remove cholesterol from macrophages but rather to participate in "reverse cholesterol transport."〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Basu, S K -- Goldstein, J L -- Brown, M S -- HL 20948/HL/NHLBI NIH HHS/ -- New York, N.Y. -- Science. 1983 Feb 18;219(4586):871-3.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6823554" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Apolipoproteins/*secretion ; Cholesterol/*secretion ; Lipoproteins, HDL/metabolism ; Macrophages/*metabolism ; Mice ; Monensin/pharmacology
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  • 14
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    Pimozide blocks establishment but not expression of amphetamine-produced environment-specific conditioning (1983)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1983-06-17
    Description: Animals with a history of receiving daily injections of +-amphetamine in a specific environment showed a placebo effect (enhanced activity) when injected with saline and placed there; control animals with similar but dissociated drug histories and experience with the test chamber failed to show the effect. The dopamine receptor blocker pimozide antagonized the establishment of conditioning. However, the same dose of pimozide, when given to previously conditioned animals on the placebo test day, failed to antagonize the expression of conditioned activity. Thus, during conditioning dopaminergic neurons mediated a change that subsequently influenced behavior even when dopaminergic systems were blocked. Although schizophrenia may be related to hyperfunctioning of dopamine, neuroleptic drugs, which block dopamine receptors on their first administration, do not have therapeutic effects for a number of days. The results of the pimozide experiments may resolve this paradox.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Beninger, R J -- Hahn, B L -- New York, N.Y. -- Science. 1983 Jun 17;220(4603):1304-6.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6857251" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Conditioning (Psychology)/*drug effects/physiology ; Dextroamphetamine/antagonists & inhibitors/*pharmacology ; Humans ; Male ; Pimozide/*pharmacology ; Rats ; Rats, Inbred Strains ; Receptors, Dopamine/physiology ; Reinforcement (Psychology) ; Schizophrenia/physiopathology
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  • 15
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    Resistance to a malignant lymphoma in chickens is mapped to subregion of major histocompatibility (B) complex (1983)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1983-02-25
    Description: A genetic recombinant within the major histocompatibility (B) complex of the chicken has revealed the chromosomal subregion effecting resistance to Marek's disease--a malignant lymphoma induced by a herpesvirus. The recombinant, BF21-G19, occurred spontaneously among the progeny of a male heterozygous for resistant BF21-G21 and susceptible BF19-G19 haplotypes. Exposure to Marek's disease of families segregating for the recombinant showed that this new F-G arrangement conferred a level of resistance equivalent to that of the resistant parental haplotype. Thus, a gene, or genes, within or closely linked to the B-F region of the B complex appears to be responsible for the observed resistance to Marek's disease.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Briles, W E -- Briles, R W -- Taffs, R E -- Stone, H A -- CA12796/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1983 Feb 25;219(4587):977-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6823560" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Chickens ; Chromosome Mapping ; Lymphoma/genetics/*immunology ; *Major Histocompatibility Complex ; Marek Disease/genetics/*immunology
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  • 16
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    Plasticity of motor behavior in monkeys with crossed forelimb nerves (1983)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1983-04-22
    Description: Monkeys in which nerves innervating the flexor muscles of the forearm and hand (the ulnar or the median nerve) had been surgically cross-united with the nerve innervating the extensor muscles (the radial nerve), and vice versa, showed excellent (ulnar-radial crosses) to moderate (median-radial crosses) control of movement performance after regeneration. Antagonistic movement responses were seen occasionally, but these were corrected almost immediately. Stimulation of the crossed nerves showed that they had innervated the antagonistic muscle groups. The results reveal the capacity of the primate central nervous system to adapt to gross disturbances imposed on the execution of movements by changes in peripheral innervation.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Brinkman, C -- Porter, R -- Norman, J -- New York, N.Y. -- Science. 1983 Apr 22;220(4595):438-40.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6836289" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Fingers/physiology ; Forearm/*innervation/physiology ; Hand/innervation/physiology ; Humans ; Macaca fascicularis ; Macaca nemestrina ; Median Nerve/physiology ; *Movement ; *Neuronal Plasticity ; Radial Nerve/physiology ; Thumb/physiology ; Ulnar Nerve/physiology
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  • 17
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    Intracellular recordings from cochlear inner hair cells: effects of stimulation of the crossed olivocochlear efferents (1983)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1983-10-07
    Description: Intracellular recordings were obtained from inner hair cells located in the lower basal turn of the guinea pig cochlea. At low sound pressure levels the inner hair cells were highly frequency selective, producing receptor potentials only in response to sound frequencies between about 16 and 24 kilohertz. Electrical stimulation of efferent nerves in the crossed olivocochlear bundle markedly reduced these receptor potentials while causing little change in the resting membrane potential. At high sound levels, where cells responded to an increasingly wider range of sound frequencies, stimulation was less effective in reducing receptor potentials. Since the crossed olivocochlear bundle primarily innervates outer hair cells, these results support an outer hair cell contribution to the most sensitive response region of inner hair cells.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Brown, M C -- Nuttall, A L -- Masta, R I -- NS-05785/NS/NINDS NIH HHS/ -- NS-07106/NS/NINDS NIH HHS/ -- NS-15107/NS/NINDS NIH HHS/ -- etc. -- New York, N.Y. -- Science. 1983 Oct 7;222(4619):69-72.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6623058" target="_blank"〉PubMed〈/a〉
    Keywords: Afferent Pathways/physiology ; Animals ; Cochlea/*physiology ; Electric Stimulation ; Guinea Pigs ; Hair Cells, Auditory/*physiology ; Hair Cells, Auditory, Inner/*physiology ; Hearing/*physiology
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  • 18
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    Inflammation and collagenase production in rats with adjuvant arthritis reduced with 13-cis-retinoic acid (1983)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1983-08-19
    Description: Oral administration of 13-cis-retinoic acid (40 or 160 milligrams per kilogram of body weight daily) significantly reduced the inflammation associated with developing and established adjuvant arthritis, an experimentally induced arthritis in rats that resembles human rheumatoid arthritis. The amount of collagenase secreted in tissue culture by adherent cells isolated from the inflamed joints of adjuvant rats treated with 13-cis-retinoic acid also decreased as compared to the amount secreted by cells from vehicle-treated adjuvant rats. Collagenase is important in the joint destruction accompanying rheumatoid arthritis. The successful use of retinoids in the treatment of this proliferative but nonmalignant disorder demonstrates a new application of these compounds.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Brinckerhoff, C E -- Coffey, J W -- Sullivan, A C -- AM14780/AM/NIADDK NIH HHS/ -- P60 AM20641/AM/NIADDK NIH HHS/ -- New York, N.Y. -- Science. 1983 Aug 19;221(4612):756-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6308759" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Arthritis/*drug therapy ; Arthritis, Experimental/*drug therapy ; Female ; Fibrinogen/blood ; Inflammation/drug therapy ; Male ; Microbial Collagenase/biosynthesis ; Prostaglandins E/biosynthesis ; Rats ; Sex Factors ; Tretinoin/*therapeutic use
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  • 19
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    Induction of neuronal branching in Caenorhabditis elegans (1983)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1983-07-01
    Description: The two postembryonic touch receptor neurons in the nematode Caenorhabditis elegans arise from essentially identical cell lineages and have the same ultrastructural features. The cells are found in different positions in the animal, however, and differ in neuronal branching, connectivity, and function. These structural and functional differences are not seen when cells are placed in similar positions by mutation or laser-induced damage. Thus, some, but probably not all, of the differentiated properties of these cells are a consequence of their cellular environment.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Chalfie, M -- Thomson, J N -- Sulston, J E -- AI19399/AI/NIAID NIH HHS/ -- GM30997/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1983 Jul 1;221(4605):61-3.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6857263" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Caenorhabditis/*growth & development/physiology ; Insects/growth & development/physiology ; Movement ; Nervous System/*growth & development ; Nervous System Physiological Phenomena ; Neurons, Afferent/physiology ; Synapses/physiology ; Touch/physiology
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  • 20
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    Differential classical conditioning of a defensive withdrawal reflex in Aplysia californica (1983)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1983-01-28
    Description: The defensive siphon and gill withdrawal reflex of Aplysia is a simple reflex mediated by a well-defined neural circuit. This reflex exhibits classical conditioning when a weak tactile stimulus to the siphon is used as a conditioned stimulus and a strong shock to the tail is used as an unconditioned stimulus. The siphon withdrawal component of this reflex can be differentially conditioned when stimuli applied to two different sites on the mantle skin (the mantle shelf and the siphon) are used as discriminative stimuli. The differential conditioning can be acquired in a single trial, is retained for more than 24 hours, and increases in strength with increased trials. Differential conditioning can also be produced within the field of innervation of a single cluster of sensory neurons (the LE cluster) since two separate sites on the siphon skin can serve as discriminative stimuli. The finding that two independent afferent inputs that activate a common set of interneurons and motor neurons can be differentially conditioned restricts the possible cellular loci involved in the associative learning.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Carew, T J -- Hawkins, R D -- Kandel, E R -- 5KO2 M0081/PHS HHS/ -- 5KO5 MH18558/MH/NIMH NIH HHS/ -- NS 12744/NS/NINDS NIH HHS/ -- etc. -- New York, N.Y. -- Science. 1983 Jan 28;219(4583):397-400.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6681571" target="_blank"〉PubMed〈/a〉
    Keywords: Afferent Pathways/physiology ; Animals ; Aplysia/*physiology ; Conditioning, Classical/*physiology ; *Defense Mechanisms ; Humans ; Memory ; Reflex
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  • 21
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    Ventral posterior thalamic neurons differentially responsive to noxious stimulation of the awake monkey (1983)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1983-08-12
    Description: Of 76 cutaneously activated neurons recorded from the ventral posterior thalamus of awake, behaving monkeys, nine were weakly excited by innocuous skin stimulation and responded maximally only when noxious mechanical cutaneous stimuli were delivered within small, contralateral receptive fields. These results show that neurons capable of encoding the spatial and temporal features of noxious stimuli are located in the ventral posterior thalamus of the awake primate.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Casey, K L -- Morrow, T J -- NS 12581/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 1983 Aug 12;221(4611):675-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6867738" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cats ; Consciousness/physiology ; Electric Stimulation ; Neurons, Afferent/physiology ; Pain/*physiopathology ; Physical Stimulation ; Rats ; Saimiri ; Thalamic Nuclei/physiology ; Thalamus/cytology/*physiology
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  • 22
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    Proglumide: selective antagonism of excitatory effects of cholecystokinin in central nervous system (1983)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1983-03-25
    Description: Extracellular single-unit recording techniques were used to test the ability of proglumide to block cholecystokinin-induced excitation of rat midbrain dopaminergic neurons and dopamine-sensitive prefrontal cortex cells. Intravenous and iontophoretic proglumide administration consistently blocked cholecystokinin-induced excitations while having no effect on glutamic acid-induced increases in activity. This selective blockade of central cholecystokinin effects by proglumide suggests that this drug may be valuable for studying the possible role of cholecystokinin as a neurotransmitter or neuromodulator in the central nervous system.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Chiodo, L A -- Bunney, B S -- MH-25642/MH/NIMH NIH HHS/ -- MH-28849/MH/NIMH NIH HHS/ -- NS-07136/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 1983 Mar 25;219(4591):1449-51.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6828873" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Brain/*physiology ; Cerebral Cortex/physiology ; Cholecystokinin/*pharmacology ; Drug Antagonism ; Glutamine/*analogs & derivatives ; Male ; Mesencephalon/physiology ; Neurons/drug effects/*physiology ; Proglumide/*pharmacology ; Rats
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  • 23
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    Gene splicers contemplate the rat brain (1983)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1983-11-18
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Fox, J L -- New York, N.Y. -- Science. 1983 Nov 18;222(4625):828-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6138857" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Brain/*physiology ; DNA, Recombinant ; Gene Expression Regulation ; Nerve Tissue Proteins/*genetics ; Neurotransmitter Agents/*physiology ; Rats
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  • 24
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    Brief deprivation of vision after unilateral lesions of the frontal eye field prevents contralateral inattention (1983)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1983-04-29
    Description: Brief deprivation of vision after unilateral lesions of the frontal eye field prevents the appearance of contralateral inattention to visual, auditory, and somatosensory stimuli. The forced circling that accompanies inattention, however, is not affected. An equivalent preoperative period in the dark only partly reduces inattention symptoms. Visual deprivation does not reduce or prevent inattention resulting from lesions of the superior colliculus.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Crowne, D P -- Richardson, C M -- Ward, G -- New York, N.Y. -- Science. 1983 Apr 29;220(4596):527-30.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6836298" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Attention/*physiology ; Darkness ; Frontal Lobe/*physiology ; Male ; Movement ; Rats ; Sensory Deprivation/*physiology ; Superior Colliculi/*physiology ; Visual Perception/*physiology
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  • 25
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    Splice junctions: association with variation in protein structure (1983)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1983-06-10
    Description: A comparison between eukaryotic gene sequences and protein sequences of homologous enzymes from bacterial and mammalian organisms shows that intron-exon junctions frequently coincide with variable surface loops of the protein structures. The altered surface structures can account for functional differences among the members of a family. Sliding of the intron-exon junctions may constitute one mechanism for generating length polymorphisms and divergent sequences found in protein families. Since intron-exon junctions map to protein surfaces, the alterations mediated by sliding of these junctions can be effected without disrupting the stability of the protein core.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Craik, C S -- Rutter, W J -- Fletterick, R -- AM21344/AM/NIADDK NIH HHS/ -- AM26081/AM/NIADDK NIH HHS/ -- GM28520/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1983 Jun 10;220(4602):1125-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6344214" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Bacterial Proteins ; Base Sequence ; Biological Evolution ; DNA/genetics ; Endopeptidases/genetics ; Eukaryotic Cells/metabolism ; Genes ; Genes, Bacterial ; Protein Conformation ; Proteins/*genetics ; *Serine Endopeptidases ; Tetrahydrofolate Dehydrogenase/genetics
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  • 26
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    Bioactive cardiac substances: potent vasorelaxant activity in mammalian atria (1983)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1983-07-01
    Description: Mammalian atrial extracts possess natriuretic and diuretic activity. In experiments reported here it was found that atrial, but not ventricular, extract also causes relaxation of isolated vascular and nonvascular smooth muscle preparations. The smooth muscle relaxant activity of atrial extract was heat-stable and concentration-dependent and could be destroyed with protease. Rabbit aortic and chick rectum strips were used for the detection of atrial biological activity. The atrial activity was separated by column chromatography into two peaks having apparent molecular weights of 20,000 to 30,000 and less than 10,000. The atrial substance that copurified with the smooth muscle relaxant activity in both peaks caused natriuresis when injected into conscious rats. It appears that atria possess at least two peptides that elicit smooth muscle relaxation and natriuresis, suggesting an endogenous system of fluid volume regulation.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Currie, M G -- Geller, D M -- Cole, B R -- Boylan, J G -- YuSheng, W -- Holmberg, S W -- Needleman, P -- New York, N.Y. -- Science. 1983 Jul 1;221(4605):71-3.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6857267" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Atrial Function ; Chickens ; Chromatography, Gel ; Dogs ; Dose-Response Relationship, Drug ; Humans ; Molecular Weight ; Muscle, Smooth/drug effects ; Muscle, Smooth, Vascular/*drug effects ; Natriuresis/drug effects ; Rabbits ; Rats ; Swine ; Vasodilation/drug effects
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  • 27
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    A polypeptide secreted by transformed cells that modulates human plasminogen activator production (1983)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1983-07-08
    Description: A diffusible factor produced and secreted by malignant murine cells was capable of inducing plasminogen activator production by normal diploid human fibroblasts. The factor's ability to induce plasminogen activator was insensitive to treatment with nucleases, but its activity was destroyed by digestion with proteases. It is proposed that such a factor would play a role in malignancy if it would recruit normal cells that were adjacent to transformed cells to produce plasminogen activator which could result in tumor-promoted proteolysis.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Davies, R L -- Rifkin, D B -- Tepper, R -- Miller, A -- Kucherlapati, R -- CA-16239/CA/NCI NIH HHS/ -- CA-35171/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1983 Jul 8;221(4606):171-3.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6682999" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cricetinae ; Fibroblasts/drug effects/metabolism ; Humans ; Hybrid Cells/metabolism ; Melanoma/metabolism ; Mice ; Neoplasms, Experimental/*metabolism/secretion ; Peptides/pharmacology/*secretion ; Plasminogen Activators/*biosynthesis ; Rats
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  • 28
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    Mechanical action of the intercostal muscles on the ribs (1983)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1983-04-01
    Description: The external and internal interosseous intercostal muscles were separately stimulated at end-expiratory lung volume in anesthetized dogs. These muscles were all found to elevate the ribs into which they insert. By attaching weights to the ribs, it was determined that the nonlinear compliance of the ribs was responsible for this phenomenon.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉De Troyer, A -- Kelly, S -- Zin, W A -- New York, N.Y. -- Science. 1983 Apr 1;220(4592):87-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6828883" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Biomechanical Phenomena ; Dogs ; Electric Stimulation ; Humans ; Intercostal Muscles/anatomy & histology/*physiology ; Respiration ; Ribs/anatomy & histology/*physiology
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  • 29
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    Human cancer research (1983)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1983-07-22
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Dermer, G B -- New York, N.Y. -- Science. 1983 Jul 22;221(4608):318.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6867709" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Humans ; *Neoplasms ; Neoplasms, Experimental ; Rats ; Research
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  • 30
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    Diffusion barrier in the small intestine (1983)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1983-04-08
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉DeSimone, J A -- NS13767/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 1983 Apr 8;220(4593):221-2.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6828892" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Diffusion ; Humans ; Intestinal Mucosa/metabolism ; Intestine, Small/metabolism/*physiology ; Peptides/metabolism ; Sucrose/metabolism
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  • 31
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    Collagen formation by the hepatocyte in primary monolayer culture and in vivo (1983)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1983-03-18
    Description: Immunohistochemical techniques were used to confirm biochemical evidence that parenchymal cells isolated from adult rat liver and maintained in nonreplicating monolayer culture for 2 days synthesized type IV basement membrane collagen. On continued incubation in serum-free medium, the hepatocytes also synthesized the interstitial collagens, types I and III. Consistent with these results in culture, type IV collagen was localized to the hepatocytes in slices of pathologic rat liver. Hence collagen formation is a previously unrecognized function of the hepatocyte that may be important in the pathogenesis of liver fibrosis or cirrhosis.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Diegelmann, R F -- Guzelian, P S -- Gay, R -- Gay, S -- AM18976/AM/NIADDK NIH HHS/ -- DE02570/DE/NIDCR NIH HHS/ -- HL11310/HL/NHLBI NIH HHS/ -- etc. -- New York, N.Y. -- Science. 1983 Mar 18;219(4590):1343-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6828863" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Basement Membrane/metabolism ; Cells, Cultured ; Collagen/*biosynthesis/immunology ; Liver/cytology/*metabolism ; Molecular Weight ; Rats
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  • 32
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    Long-term biological consequences of nuclear war (1983)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1983-12-23
    Description: Subfreezing temperatures, low light levels, and high doses of ionizing and ultraviolet radiation extending for many months after a large-scale nuclear war could destroy the biological support systems of civilization, at least in the Northern Hemisphere. Productivity in natural and agricultural ecosystems could be severely restricted for a year or more. Postwar survivors would face starvation as well as freezing conditions in the dark and be exposed to near-lethal doses of radiation. If, as now seems possible, the Southern Hemisphere were affected also, global disruption of the biosphere could ensue. In any event, there would be severe consequences, even in the areas not affected directly, because of the interdependence of the world economy. In either case the extinction of a large fraction of the Earth's animals, plants, and microorganisms seems possible. The population size of Homo sapiens conceivably could be reduced to prehistoric levels or below, and extinction of the human species itself cannot be excluded.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Ehrlich, P R -- Harte, J -- Harwell, M A -- Raven, P H -- Sagan, C -- Woodwell, G M -- Berry, J -- Ayensu, E S -- Ehrlich, A H -- Eisner, T -- New York, N.Y. -- Science. 1983 Dec 23;222(4630):1293-300.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6658451" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Atmosphere ; Climate ; *Environment ; Humans ; *Nuclear Warfare ; Photosynthesis ; Radiation, Ionizing ; Radioactive Fallout ; Sunlight ; Temperature ; Ultraviolet Rays
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  • 33
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    Adenylate cyclase activation shifts the phase of a circadian pacemaker (1983)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1983-04-01
    Description: Forskolin, a highly specific activator of adenylate cyclase, produced both delay and advance phase shifts of the circadian rhythm recorded from the isolated eye of the marine mollusk Aplysia. The phase dependence of the response to forskolin was identical to that with serotonin, which also stimulates adenylate cyclase in the eye. The ability of agents to activate adenylate cyclase in homogenates was correlated with their ability to shift the phase of the circadian oscillator. These results along with earlier findings show that adenosine 3',5'-monophosphate mediates the effect of serotonin on the rhythm and regulates the phase of the circadian pacemaker in the eye of Aplysia.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Eskin, A -- Takahashi, J S -- New York, N.Y. -- Science. 1983 Apr 1;220(4592):82-4.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6298939" target="_blank"〉PubMed〈/a〉
    Keywords: Adenosine Monophosphate/physiology ; Adenylyl Cyclases/*physiology ; Animals ; Aplysia/physiology ; *Circadian Rhythm/drug effects ; Colforsin ; Cyclic AMP/physiology ; Diterpenes/pharmacology ; Eye/drug effects ; Ocular Physiological Phenomena ; Serotonin/pharmacology
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  • 34
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    Direct in vivo monitoring of dopamine released from two striatal compartments in the rat (1983)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1983-07-08
    Description: Microvoltammetric electrodes were used to monitor dopamine released in the caudate nucleus of the rat after electrical stimulation of the medial forebrain bundle. The time resolution of the technique is sufficient to determine in vivo concentration changes on a time scale of seconds. Direct evidence identifying the substance released as dopamine was obtained both voltammetrically and pharmacologically. Administration of alpha-methyl-p-tyrosine terminates the release of dopamine, although tissue stores of dopamine are still present. Thus there appears to be a compartment for dopamine storage that is not available for immediate release. This compartment appears to be mobilized by amfonelic acid, since administration of this agent after alpha-methyl-p-tyrosine returns the concentration of dopamine released by electrical stimulation to 75 percent of the original amount.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Ewing, A G -- Bigelow, J C -- Wightman, R M -- KO 4 NS000356/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 1983 Jul 8;221(4606):169-71.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6857277" target="_blank"〉PubMed〈/a〉
    Keywords: Amphetamine/pharmacology ; Animals ; Caudate Nucleus/drug effects/*metabolism ; Dopamine/*metabolism ; Male ; Methyltyrosines/pharmacology ; Microelectrodes ; Naphthyridines/pharmacology ; Rats ; Rats, Inbred Strains ; alpha-Methyltyrosine
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    Antibodies to cell membrane antigens associated with human T-cell leukemia virus in patients with AIDS (1983)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1983-05-20
    Description: The acquired immune deficiency syndrome (AIDS), which has recently occurred at increasing rates in homosexual men, intravenous drug users, and others, is characterized by the development of Kaposi's sarcoma and several opportunistic infections including pneumonia caused by Pneumocystis carinii. Serum samples from patients with AIDS and from matched and unmatched control subjects were examined for the presence of antibodies to cell membrane antigens associated with human T-cell leukemia virus. Nineteen of 75 of the AIDS patients had antibodies directed to surface antigens of Hut 102, a reference T lymphoid cell line infected with leukemia virus, as did two of the 336 control subjects.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Essex, M -- McLane, M F -- Lee, T H -- Falk, L -- Howe, C W -- Mullins, J I -- Cabradilla, C -- Francis, D P -- 2T32CA09031/CA/NCI NIH HHS/ -- 5T32HL07523/HL/NHLBI NIH HHS/ -- CA 18216/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1983 May 20;220(4599):859-62.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6342136" target="_blank"〉PubMed〈/a〉
    Keywords: Acquired Immunodeficiency Syndrome/etiology/immunology/*microbiology ; Animals ; Antibodies, Viral/*analysis ; Antigens, Viral/immunology ; Female ; Fluorescent Antibody Technique ; Humans ; Lymphatic Diseases/immunology ; Male ; *Retroviridae/immunology ; T-Lymphocytes/microbiology ; Tumor Virus Infections/complications/immunology/*microbiology
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    Dioxins' health effects remain puzzling. In vitro tests suggests it causes cancer, medical results remain ambiguous (1983)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1983-09-16
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Fox, J L -- New York, N.Y. -- Science. 1983 Sep 16;221(4616):1161-2.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6612329" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Carcinogens ; Dioxins/*toxicity ; Environmental Exposure ; Humans
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    Scientist sues over genetically impure mice (1983)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1983-08-12
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Fox, J L -- New York, N.Y. -- Science. 1983 Aug 12;221(4611):625-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6603019" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Animals, Laboratory ; Jurisprudence ; Mice ; *Mice, Inbred BALB C ; Rats ; Rats, Inbred Lew ; Rats, Inbred Strains ; Research ; United States ; Wisconsin
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  • 38
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    Barbiturate-enhanced detection of brain lesions by carbon-14-labeled 2-deoxyglucose autoradiography (1983)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1983-02-18
    Description: Cerebral glucose metabolism in rats was examined 1 week after the production by ibotenic acid of unilateral striatal lesions. The incorporation of carbon-14-labeled deoxyglucose decreased within the lesion but much less than that of carbon-14-labeled glucose. Barbiturate anesthesia caused a reversal of the asymmetric striatal deoxyglucose labeling, such that the lesioned striatum retained more tracer than the contralateral side. The combined use of barbiturates and radiolabeled deoxyglucose may enhance the identification of recent brain infarction in experimental animals and in man.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Frey, K A -- Agranoff, B W -- 1 T32 GM07863/GM/NIGMS NIH HHS/ -- NS 15655/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 1983 Feb 18;219(4586):879-81.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6823556" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Autoradiography ; Barbiturates/*pharmacology ; Brain/*drug effects/metabolism ; Brain Diseases/chemically induced/metabolism ; Corpus Striatum/drug effects ; Deoxyglucose ; Glucose/metabolism ; Ibotenic Acid ; Rats
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    Single visual neurons code opposing motion independent of direction (1983)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1983-05-13
    Description: Cells in intermediate and deeper layers of the pigeon optic tectum respond best when a textured background pattern is moved in the opposite direction to a moving test spot. Complete inhibition occurs when the background moves in the same direction as the test stimulus. Most noteworthy is the invariance of this relationship over a wide range of test spot directions. These cells represent a higher level of abstraction in a motion-detecting system and may play a role in figure-ground segregation or the discrimination of the motion of an object from self-induced optical motion.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Frost, B J -- Nakayama, K -- EY-03884/EY/NEI NIH HHS/ -- New York, N.Y. -- Science. 1983 May 13;220(4598):744-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6836313" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Columbidae/physiology ; Locomotion ; Motion ; Motion Perception/*physiology ; Neurons/physiology ; Superior Colliculi/*cytology/physiology ; Visual Perception/*physiology
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  • 40
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    Dipetalonema viteae (Nematoda: Filarioidea): culture of third-stage larvae to young adults in vitro (1983)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1983-07-08
    Description: Infective third-stage larvae of Dipetalonema viteae (Nematoda: Filarioidea) were cultured to young adults in a cell-free culture system. Third-stage larvae from the tick vector grew, developed, and molted twice in a medium containing NCTC 135 and Iscove's modified Dulbecco's medium supplemented with fetal bovine serum under a gas phase of 95 percent nitrogen and 5 percent carbon dioxide. The availability of such a culture system for filariids should facilitate studies of their immunology, biochemistry, and sensitivity to drugs.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Franke, E D -- Weinstein, P P -- AI 07030/AI/NIAID NIH HHS/ -- AI 09625/AI/NIAID NIH HHS/ -- New York, N.Y. -- Science. 1983 Jul 8;221(4606):161-3.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6682998" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Culture Media ; Dipetalonema/*growth & development ; In Vitro Techniques ; Larva ; Male ; Ticks/parasitology
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    Light and propranolol suppress the nocturnal elevation of serotonin in the cerebrospinal fluid of rhesus monkeys (1983)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1983-07-29
    Description: Markedly elevated nighttime concentrations of serotonin in rhesus monkey cerebrospinal fluid were reduced to daytime levels by exposing the monkeys to continuous light or to the beta-adrenergic antagonist propranolol. Nighttime elevations of melatonin in cerebrospinal fluid were also suppressed by propranolol and light. Serotonin released in large quantities at night appears to be regulated like melatonin, and may act as a cerebroventricular hormone to influence brain and pituitary function at night.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Garrick, N A -- Tamarkin, L -- Taylor, P L -- Markey, S P -- Murphy, D L -- New York, N.Y. -- Science. 1983 Jul 29;221(4609):474-6.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6683428" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Circadian Rhythm/drug effects ; Humans ; *Light ; Macaca mulatta ; Male ; Melatonin/physiology ; Propranolol/*pharmacology ; Rats ; Serotonin/*cerebrospinal fluid/physiology
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    Proviral DNA of a retrovirus, human T-cell leukemia virus, in two patients with AIDS (1983)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1983-05-20
    Description: The acquired immune deficiency syndrome (AIDS) is characterized by T-lymphocyte dysfunction and is frequently accompanied by opportunistic infections and Kaposi's sarcoma. Human T-cell leukemia virus (HTLV) is associated with T-cell malignancies and can transform T lymphocytes in vitro. In an attempt to find evidence of HTLV infection in patients with AIDS, DNA from samples of peripheral blood lymphocytes from 33 AIDS patients was analyzed by Southern blot-hybridization with a radiolabeled cloned HTLV DNA probe. Analysis of DNA from both the fresh (uncultured) lymphocytes and from T cells cultured with T-cell growth factor revealed the presence of integrated HTLV proviral sequences in lymphocytes from two of the patients, both of whom had antibody to HTLV. The proviral sequences could not be detected in blood samples obtained from these individuals at a later date, consistent with the possibility that the population of infected cells had become depleted.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Gelmann, E P -- Popovic, M -- Blayney, D -- Masur, H -- Sidhu, G -- Stahl, R E -- Gallo, R C -- New York, N.Y. -- Science. 1983 May 20;220(4599):862-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6601822" target="_blank"〉PubMed〈/a〉
    Keywords: Acquired Immunodeficiency Syndrome/etiology/immunology/*microbiology ; Adult ; Animals ; Cats ; DNA, Viral/*analysis ; Humans ; Male ; Middle Aged ; *Retroviridae/genetics ; T-Lymphocytes/analysis/microbiology ; Tumor Virus Infections/complications/*microbiology
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    Electrical brain stimulation and the localization of cardiopulmonary function (1983)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1983-11-04
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Glenn, L L -- New York, N.Y. -- Science. 1983 Nov 4;222(4623):527-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6623095" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Brain/*physiology ; Brain Stem/physiology ; Electric Stimulation ; Heart/*innervation ; Humans ; Locomotion ; Lung/*innervation ; *Respiration
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    Inhibitory conductance changes at synapses in the lamprey brainstem (1983)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1983-07-01
    Description: Although the conductance and kinetic behavior of inhibitory synaptic channels have been studied in a number of nerve and muscle cells, there has been little if any detailed study of such channels at synapses in the vertebrate central nervous system or of the relation of such channels to natural synaptic events. In the experiments reported here, current noise measurements were used to obtain such information at synapses on Muller cells in the lamprey brainstem. Application of glycine to the cells activated synaptic channels with large conductances and relaxation time constants (70 picosiemens and 33 milliseconds, respectively, at 3 degrees to 10 degrees C). Spontaneous inhibitory synaptic currents had a mean conductance of 107 nanosiemens and decayed with the same time constant. In addition, the glycine responses and the spontaneous currents had the same reversal potential and both were abolished by strychnine. These results support the idea that glycine is the natural inhibitory transmitter at these synapses and suggest that one quantum of transmitter activates about 1500 elementary conductance channels.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Gold, M R -- Martin, A R -- NS-06283/NS/NINDS NIH HHS/ -- NS-09660/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 1983 Jul 1;221(4605):85-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6857271" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Brain Stem/*physiology ; Glycine/pharmacology ; Lampreys/physiology ; Neural Conduction/drug effects ; *Neural Inhibition/drug effects ; Strychnine/pharmacology ; Synapses/drug effects/*physiology
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    Drug history modifies the behavioral effects of pentobarbital (1983)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1983-04-15
    Description: Behavior of squirrel monkeys, maintained by the termination of stimuli associated with electric shock, was suppressed by response-dependent shock delivery. The effects of pentobarbital on this behavior depended on whether monkeys had previously received morphine. In monkeys without experience with drugs, pentobarbital increased responding. In monkeys with recent experience with morphine, however, pentobarbital resulted in a smaller increase or decrease in responding. The rate-decreasing effects of pentobarbital after a history of morphine administration could be reversed by the administration of d-amphetamine. These findings suggest that the behavioral effects of abused drugs may depend on previous experience with other drugs, even when those drugs are from a different pharmacological class.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Glowa, J R -- Barrett, J E -- DA 02658/DA/NIDA NIH HHS/ -- DA 02873/DA/NIDA NIH HHS/ -- MH 07658/MH/NIMH NIH HHS/ -- etc. -- New York, N.Y. -- Science. 1983 Apr 15;220(4594):333-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6682244" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Behavior, Animal/*drug effects ; Dextroamphetamine/pharmacology ; Dose-Response Relationship, Drug ; Drug Interactions ; Humans ; Macaca mulatta ; Male ; Morphine/pharmacology ; Pentobarbital/*pharmacology ; Saimiri ; Substance-Related Disorders/physiopathology
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    Mutagenicity of glutathione and cysteine in the Ames test (1983)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1983-05-27
    Description: Postmitochondrial supernatant from rat liver and kidney homogenates transformed cysteine into a mutagen that reverted bacteria of the strain Salmonella typhimurium TA100 to histidine independence. Glutathione was also activated by kidney postmitochondrial supernatant but not by liver preparations. Hence, important endogenous compounds of mammals are positive in the most commonly used short-term test for carcinogenicity and mutagenicity. Glutathione is positive in the test even at concentrations found in mammalian tissues.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Glatt, H -- Protic-SabljiC, M -- Oesch, F -- New York, N.Y. -- Science. 1983 May 27;220(4600):961-3.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6342137" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cysteine/*pharmacology ; Glutathione/*pharmacology ; Histidine/metabolism ; Hydrogen Peroxide/metabolism ; Kidney/metabolism ; Liver/metabolism ; *Mutagenicity Tests ; Mutagens/*pharmacology ; Rats ; Salmonella typhimurium/metabolism
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    Cortical dopaminergic involvement in cocaine reinforcement (1983)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1983-08-19
    Description: Neuronal systems involved in the initiation of cocaine reinforcement were investigated by identifying brain sites where direct application of the drug was reinforcing. This was accomplished by allowing rats to self-administer picomolar concentrations of cocaine into discrete brain regions. The medial prefrontal cortex supported self-administration, while the nucleus accumbens and ventral tegmental area did not. Self-administration could be attenuated by including equimolar concentrations of the dopaminergic D2-receptor antagonist sulpiride in the microinjection system. These results imply that cocaine reinforcement is mediated in part through a direct action on mesocortical dopaminergic receptors.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Goeders, N E -- Smith, J E -- DA-01999-04/DA/NIDA NIH HHS/ -- New York, N.Y. -- Science. 1983 Aug 19;221(4612):773-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6879176" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Brain Mapping ; Cerebral Cortex/*drug effects/physiology ; Cocaine/*pharmacology ; Dopamine/*physiology ; Male ; Nucleus Accumbens/physiology ; Rats ; Self Administration ; Sulpiride/pharmacology
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    Cocaine-induced rotation: sex-dependent differences between left- and right-sided rats (1983)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1983-08-19
    Description: Cocaine elicited dose-related rotation (circling) in naive rats. The maximum effect was greater than observed previously with other drugs. Overall, females were more sensitive to cocaine than males. However, right-biased females were more sensitive than left-biased females, whereas left-biased males were more sensitive than right-biased males. The results suggest that sex-dependent differences in brain asymmetry may be an important determinant of cocaine sensitivity.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Glick, S D -- Hinds, P A -- Shapiro, R M -- DA 01044/DA/NIDA NIH HHS/ -- New York, N.Y. -- Science. 1983 Aug 19;221(4612):775-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6879177" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cocaine/*pharmacology ; Dextroamphetamine/pharmacology ; Female ; Functional Laterality ; Male ; Movement/*drug effects ; Rats ; Rotation ; Sex Factors
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    Pulsing electromagnetic fields induce cellular transcription (1983)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1983-06-17
    Description: Weak, pulsing electromagnetic fields can modify biological processes. The hypothesis that responses to such induced currents depend on pulse characteristics was evaluated by using transcription as the target process. Two pulses in clinical use, the repetitive single pulse and the repetitive pulse train, were tested. These pulses produced different results from each other and from controls when transcription in dipteran salivary gland cells was monitored with tritiated uridine in transcription autoradiography, cytological nick translation, and analysis of isolated RNA fractions. The single pulse increased the specific activity of messenger RNA after 15 and 45 minutes of exposure. The pulse train increased specific activity only after 45 minutes of exposure.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Goodman, R -- Bassett, C A -- Henderson, A S -- 1ROI CA 29340/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1983 Jun 17;220(4603):1283-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6857248" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Autoradiography ; Diptera ; Dose-Response Relationship, Radiation ; *Electromagnetic Fields ; *Electromagnetic Phenomena ; RNA, Messenger/metabolism ; Salivary Glands/metabolism ; Transcription, Genetic/*radiation effects
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    Adenosine receptors: autoradiographic evidence for their location on axon terminals of excitatory neurons (1983)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1983-05-27
    Description: Adenosine receptors were made visible on light microscopy by autoradiography with tritiated cyclohexyladenosine. In the cerebellum, adenosine receptors were absent in Weaver mice, which lack granule cells, and were displaced in Reeler mice, which have displacements of granule cells. Thus, adenosine receptors appear to be located on the axon terminals of excitatory granule cells in the cerebellum. Removal of one eye of a rat depleted adenosine receptors in the contralateral superior colliculus, suggesting that the receptors occur on axon terminals of excitatory projections from retinal ganglion cells. The presence of adenosine receptors on excitatory axon terminals may explain synaptic inhibition by adenosine and the behavioral effects of xanthines.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Goodman, R R -- Kuhar, M J -- Hester, L -- Snyder, S H -- DA-00266/DA/NIDA NIH HHS/ -- MH-18501/MH/NIMH NIH HHS/ -- NS-16375/NS/NINDS NIH HHS/ -- etc. -- New York, N.Y. -- Science. 1983 May 27;220(4600):967-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6302841" target="_blank"〉PubMed〈/a〉
    Keywords: Adenosine/*physiology ; Animals ; Autoradiography ; Axons/*physiology ; Cerebellum/physiology ; Corpus Striatum/physiology ; Hippocampus/physiology ; Mice ; Mice, Neurologic Mutants ; Rats ; Rats, Inbred Strains ; Receptors, Cell Surface/*physiology ; Receptors, Purinergic ; Retinal Ganglion Cells/physiology ; Synaptic Membranes/physiology ; Thalamus/physiology
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    High efficiency DNA-mediated transformation of primate cells (1983)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1983-08-05
    Description: Tissue culture cells from several mammalian species, including three primate lines, were transfected with recombinant vectors carrying Escherichia coli xanthine-guanine phosphoribosyltransferase or Tn5 aminoglycoside phosphotransferase dominant selectable markers. Human HeLa and SV40-transformed xeroderma pigmentosum cells exhibited stable transformation frequencies of at least 10(-3) (0.1 percent). CV-1, an African green monkey kidney cell line, could be stably transformed with the exceptionally high frequency of 6 X 10(-2) (6 percent).〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Gorman, C -- Padmanabhan, R -- Howard, B H -- New York, N.Y. -- Science. 1983 Aug 5;221(4610):551-3.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6306768" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Avian Sarcoma Viruses/genetics ; Cell Line ; Cercopithecus aethiops ; Cricetinae ; Cricetulus ; DNA, Recombinant/*metabolism ; Genetic Vectors ; HeLa Cells/metabolism ; Humans ; Mice ; Plasmids ; *Transfection
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    Somatic mutations of immunoglobulin variable genes are restricted to the rearranged V gene (1983)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1983-06-10
    Description: An important question concerning the mechanism of somatic mutation of immunoglobulin variable (V) genes is whether it involves all of the numerous V genes in a differentiated B cell, independent of location, or if it is restricted to a particular chromosomal site. Comparison of the sequence of two alleles of a given V gene shows that the mutations are limited to the rearranged V gene, while the same V gene on the other chromosome has not undergone mutation. This indicates that a V gene sequence alone is not sufficient for somatic mutation to take place. The mutation is therefore restricted to the rearranged V gene and consequently does not occur before rearrangement.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Gorski, J -- Rollini, P -- Mach, B -- New York, N.Y. -- Science. 1983 Jun 10;220(4602):1179-81.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6857243" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Base Sequence ; Binding Sites, Antibody/*genetics ; Chromosomes/physiology ; DNA/genetics ; *Genes ; Immunoglobulin Constant Regions/genetics ; Immunoglobulin Variable Region/*genetics ; Immunoglobulins/genetics ; Lymphocytes/metabolism ; Mice ; *Mutation
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  • 53
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    Adaptive changes of the vestibulo-ocular reflex in flatfish are achieved by reorganization of central nervous pathways (1983)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1983-08-19
    Description: Flatfish provide a natural model for the study of adaptive changes in the vestibulo-ocular reflex system. During metamorphosis their vestibular and oculomotor coordinate systems undergo a 90 degree relative displacement. As a result, during swimming movements different types of compensatory eye movements are produced before and after metamorphosis by the same vestibular stimulation. Intracellular staining of central nervous connections in the flatfish with horseradish peroxidase revealed that in postmetamorphic fish secondary horizontal semicircular canal neurons contact vertical eye muscle motoneuron pools on both sides of the brain via pathways that are absent in all other vertebrates studied.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Graf, W -- Baker, R -- 13742/PHS HHS/ -- New York, N.Y. -- Science. 1983 Aug 19;221(4612):777-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6603656" target="_blank"〉PubMed〈/a〉
    Keywords: Adaptation, Physiological ; Animals ; Fishes/anatomy & histology/*physiology ; Metamorphosis, Biological ; Neuronal Plasticity ; Oculomotor Muscles/*physiology ; Vestibule, Labyrinth/innervation/*physiology
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    Expression of a cellular oncogene during liver regeneration (1983)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1983-02-04
    Description: The number of transcripts of the cellular oncogene ras, which is homologous to the transforming gene of Harvey sarcoma virus, increases during liver regeneration in rats. The increase in these transcripts in liver polysomal polyadenylated RNA occurs at the time of activation of DNA synthesis during the regenerative process induced by partial hepatectomy or carbon tetrachloride injury. The number of ras transcripts returns to basal levels within 72 hours. These observations show that transcription of a cellular oncogene increases in a regulated way in a nonneoplastic growth process.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Goyette, M -- Petropoulos, C J -- Shank, P R -- Fausto, N -- New York, N.Y. -- Science. 1983 Feb 4;219(4584):510-2.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6297003" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Carbon Tetrachloride Poisoning ; DNA/biosynthesis ; Hepatectomy ; *Liver Regeneration ; Nucleic Acid Hybridization ; *Oncogenes ; RNA, Messenger/biosynthesis ; Rats ; Sarcoma Viruses, Murine/genetics ; Time Factors ; *Transcription, Genetic
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    Expression of the major neurofilament subunit in chicken erythrocytes (1983)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1983-08-05
    Description: The 70,000-dalton core polypeptide of neurofilaments, thought to exist only in neurons, has been detected in chicken erythrocytes, where it coexists with vimentin and synemin as a component of the intermediate filament network. It is present in the circulating erythroid cells of embryos and young chickens but is nearly absent from the erythroid cells of adults. These findings are inconsistent with current models of intermediate filament expression, but provide another example of unexpected similarities between the nervous and hemopoietic systems.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Granger, B L -- Lazarides, E -- GM06965/GM/NIGMS NIH HHS/ -- RR07003/RR/NCRR NIH HHS/ -- T32 GM07616/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1983 Aug 5;221(4610):553-6.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6346488" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Chick Embryo ; Chickens ; Cytoskeleton/immunology/metabolism/physiology ; Electrophoresis, Polyacrylamide Gel ; Erythrocytes/*metabolism/ultrastructure ; Fluorescent Antibody Technique ; Intermediate Filament Proteins/immunology/*metabolism/physiology ; Microscopy, Electron ; Molecular Weight ; Peptides/metabolism ; Vimentin
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    Isolation of lamellar bodies from neonatal mouse epidermis by selective sequential filtration (1983)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1983-09-02
    Description: Isolation of epidermal lamellar bodies has presented a challenge because pressures required to homogenize keratinocytes can destroy these organelles and because the lamellar body readily releases its contents during prolonged isolation procedures. In an attempt to isolate lamellar bodies, sheets of intact stratum corneum and stratum granulosum were obtained from neonatal mice with highly purified staphylococcal epidermolytic toxin, disrupted, and passed through a series of filters. The final filtrate was rich in intact lamellar bodies and contained variable amounts of ribosomes and other vesicular structures. Availability of a highly purified lamellar body preparation from postnatal epidermis should help to clarify the role of this organelle in epidermal function. The technique of selective, sequential filtration represents a new approach to cell fractionation that may have wide applications in cell biology and biochemistry.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Grayson, S -- Johnson-Winegar, A D -- Elias, P M -- AM 19098/AM/NIADDK NIH HHS/ -- New York, N.Y. -- Science. 1983 Sep 2;221(4614):962-4.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6879194" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cell Fractionation/methods ; Epidermis/*ultrastructure ; Filtration ; Mice ; Microscopy, Electron
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    Corollary discharge provides accurate eye position information to the oculomotor system (1983)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1983-09-16
    Description: The saccadic system accurately compensates for perturbations of eye position produced by microstimulation of the superior colliculus. This requires that information about the stimulation-induced change in eye position be provided by an extraretinal source--either proprioceptive endings in extraocular muscles or a centrally generated corollary discharge. It is shown that compensation remains intact after elimination of extraocular muscle proprioception, demonstrating that corollary discharge provides accurate eye position information.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Guthrie, B L -- Porter, J D -- Sparks, D L -- F32 EY05651/EY/NEI NIH HHS/ -- P30 EY03039/EY/NEI NIH HHS/ -- R01 EY01189/EY/NEI NIH HHS/ -- New York, N.Y. -- Science. 1983 Sep 16;221(4616):1193-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6612334" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Eye Movements ; Macaca mulatta ; Oculomotor Muscles/*physiology ; Photic Stimulation ; Proprioception ; *Saccades ; Superior Colliculi/*physiology
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    Electrical synapse formation depends on interaction of mutually growing neurites (1983)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1983-07-29
    Description: A neuron's competence to form electrical synapses depends on its growth status. Experiments in situ and in cell culture with identified neurons of the snail Helisoma demonstrate that active neurite outgrowth from both potential partners must be spatially and temporally coincident for electrical synapse formation to occur.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hadley, R D -- Kater, S B -- Cohan, C S -- AM 19858/AM/NIADDK NIH HHS/ -- NS 15350/NS/NINDS NIH HHS/ -- NS 18819/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 1983 Jul 29;221(4609):466-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6867723" target="_blank"〉PubMed〈/a〉
    Keywords: Action Potentials ; Animals ; Electrophysiology ; Growth ; Neurons/*physiology ; Snails ; Synapses/*physiology
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    Neuron-glia adhesion is inhibited by antibodies to neural determinants (1983)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1983-10-07
    Description: Suspensions of embryonic chick neuronal cells adhered to monolayers of glial cells, but few neurons bound to control monolayers of fibroblastic cells from meninges or skin. Neuronal cell-glial cell adhesion was inhibited by prior incubation of the neurons with Fab' fragments of antibodies to neuronal membranes. In contrast, antibodies to the neural cell adhesion molecule (N-CAM) did not inhibit the binding. These results suggest that a specific adhesive mechanism between neurons and glial cells exists and that it is mediated by CAM's that differ from those so far identified.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Grumet, M -- Rutishauser, U -- Edelman, G M -- AI-11378/AI/NIAID NIH HHS/ -- HD-09635/HD/NICHD NIH HHS/ -- HD-16550/HD/NICHD NIH HHS/ -- etc. -- New York, N.Y. -- Science. 1983 Oct 7;222(4619):60-2.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6194561" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antibodies, Monoclonal ; Antigen-Antibody Complex ; *Cell Adhesion ; Cell Membrane/immunology ; Cells, Cultured ; Chick Embryo ; Epitopes ; Immunoglobulin Fab Fragments ; Neuroglia/*physiology ; Neurons/immunology/*physiology
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    An opiate binding site in the rat brain is highly selective for 4,5-epoxymorphinans (1983)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1983-09-16
    Description: In vitro binding studies have demonstrated the existence of multiple opiate receptor types. An additional site in the rat brain (termed the lambda site) is distinct from the established types by its selectivity for 4,5-epoxymorphinans (such as naloxone and morphine). While the lambda site displays a high affinity for naloxone in vivo and in vitro in fresh brain membrane homogenates, these sites rapidly convert in vitro to a state of low affinity. The regional distribution of the lambda site in the brain is strikingly different from that of the classic opiate receptor types.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Grevel, J -- Sadee, W -- AG 031047/AG/NIA NIH HHS/ -- DA 01095/DA/NIDA NIH HHS/ -- New York, N.Y. -- Science. 1983 Sep 16;221(4616):1198-201.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6310750" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Brain Chemistry ; Dihydromorphine/metabolism ; Diprenorphine/metabolism ; Morphine/metabolism ; Nalorphine/metabolism ; Naloxone/*metabolism ; Naltrexone/metabolism ; Rats ; Receptors, Opioid/*metabolism ; Sodium/metabolism ; Tissue Distribution
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    Extensive dendritic sprouting induced by close axotomy of central neurons in the lamprey (1983)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1983-11-04
    Description: Massive dendritic sprouting was induced in identified giant reticulospinal neurons of the lamprey by axotomy close to the soma. An axonal lesion slightly farther from the cell body induced new growth from both dendrites and axon. The amount of new growth per cell was the same whether it originated from the dendrites alone or from axonal and dendritic compartments. The location of the axonal lesion therefore determines where, in the neuron, membrane is inserted to produce the new neurites. The dendritic tree of a differentiated vertebrate central neuron was shown to have sufficient plasticity to extend new growth for several millimeters beyond the normal dendritic domain.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hall, G F -- Cohen, M J -- 2P50 NS 10174-10/NS/NINDS NIH HHS/ -- GM 07527/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1983 Nov 4;222(4623):518-21.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6623092" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Axons/*physiology ; Brain/*physiology ; Dendrites/*physiology ; Lampreys ; *Nerve Regeneration ; Neurons/*physiology
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    A cholinergic-sensitive channel in the cat visual system tuned to low spatial frequencies (1983)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1983-09-09
    Description: Visually evoked responses to counterphased gratings were recorded from the cat visual cortex before and after physostigmine administration. Physostigmine markedly reduced the responses to low spatial frequencies, but minimally affected the response to high frequencies. This effect is considered cholinergic since it could be reversed by atropine. These results support at least a two-channel model of spatial frequency responsivity.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Harding, T H -- Wiley, R W -- Kirby, A W -- New York, N.Y. -- Science. 1983 Sep 9;221(4615):1076-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6879206" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Atropine/pharmacology ; Cats ; Evoked Potentials, Visual ; Models, Neurological ; Parasympathetic Nervous System/*physiology ; Physostigmine/pharmacology ; *Vision, Ocular/drug effects ; Visual Cortex/*physiology
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    Midbrain microinfusions of prolactin increase the estrogen-dependent behavior, lordosis (1983)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1983-03-25
    Description: Microinfusions of rat prolactin into the dorsal midbrain of estrogen-treated, ovariectomized rats increased lordosis behavior. Midbrain microinfusions of antiserum to prolactin into rats displaying maximum lordosis had the opposite effect. The distribution of a prolactin-like substance in the brain was studied immunocytochemically. The results suggest that a hypothalamic neuronal system projecting to the midbrain contains a prolactin-like substance that plays a role in facilitating this behavior and therefore may mediate some of the effects of estrogen on the brain. These data, together with others from studies of the prolactin gene and its regulation, indicate that it may be possible to analyze a sequence of molecular events in the brain that facilitate a behavioral response.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Harlan, R E -- Shivers, B D -- Pfaff, D W -- HD-05585/HD/NICHD NIH HHS/ -- HD-05737/HD/NICHD NIH HHS/ -- New York, N.Y. -- Science. 1983 Mar 25;219(4591):1451-3.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6828874" target="_blank"〉PubMed〈/a〉
    Keywords: Adrenalectomy ; Animals ; Castration ; Cerebral Cortex/drug effects/*physiology ; Cosyntropin/pharmacology ; Estradiol/pharmacology ; Female ; Growth Hormone/pharmacology ; Immune Sera ; Kinetics ; Mesencephalon/*physiology ; Oxytocin/pharmacology ; Posture ; Prolactin/administration & dosage/*pharmacology ; Rats ; Sexual Behavior, Animal/*drug effects ; Vasopressins/pharmacology
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    Ultraviolet visual pigment in a vertebrate: a tetrachromatic cone system in the dace (1983)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1983-12-02
    Description: Microspectrophotometric measurements of optically isolated photoreceptors in the Japanese dace, a cyprinid fish, revealed four spectroscopically distinguishable cone pigments and one rod pigment. A visual pigment that absorbs in the near ultraviolet was found in small single cones.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Harosi, F I -- Hashimoto, Y -- EY02399/EY/NEI NIH HHS/ -- New York, N.Y. -- Science. 1983 Dec 2;222(4627):1021-3.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6648514" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cyprinidae/*metabolism ; Photoreceptor Cells/*analysis ; Retinal Pigments/*analysis ; Rod Cell Outer Segment/analysis ; Spectrophotometry, Ultraviolet
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    Virus-induced autoimmunity: monoclonal antibodies that react with endocrine tissues (1983)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1983-04-15
    Description: Mice infected with reovirus type 1 develop an autoimmune polyendocrine disease. Spleen cells from these mice were fused with myeloma cells and the culture fluids were screened by indirect immunofluorescence for autoantibodies reactive with normal mouse tissues. A large panel of cloned, stable antibody-producing hybridomas has been obtained. Fourteen of the hybridomas make autoantibodies that react with cells in the islets of Langerhans, 24 with cells in the anterior pituitary, 11 with cells in gastric mucosa, and 5 with nuclei. Except for the antibodies to nuclei, the monoclonal autoantibodies are organ-specific. Some, however, show broad cross-species reactivity, recognizing similar antigenic determinants in mouse, rat, pig, and human organs, whereas other recognize determinants only in rodent tissues. Several of the antigens recognized by these monoclonal autoantibodies have been identified as hormones (for example, glucagon, growth hormone, and insulin).〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Haspel, M V -- Onodera, T -- Prabhakar, B S -- Horita, M -- Suzuki, H -- Notkins, A L -- New York, N.Y. -- Science. 1983 Apr 15;220(4594):304-6.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6301002" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antibodies, Monoclonal/*immunology ; Autoantibodies/immunology ; Autoimmune Diseases/immunology/*microbiology ; Endocrine Glands/*immunology ; Enzyme-Linked Immunosorbent Assay ; Growth Hormone/immunology ; Humans ; Hybridomas/immunology ; Mice ; Pituitary Gland, Anterior/immunology ; Rats ; Reoviridae Infections/*immunology
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    Minor histone 2A variants and ubiquinated forms in the native H2A:H2B dimer (1983)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1983-07-29
    Description: Histone octamers from calf thymus were separated into (H3:H4)2 tetramers and H2A:H2B dimers by chromatography through Sephadex G100. The tetramers and dimers were analyzed for variants, ubiquitin adducts, and proteolyzed forms. The minor histone variants H2A.X and H2A.Z were found to be associated with histone H2B as H2A.X:H2B and H2A.Z:H2B dimers, respectively. Ubiquitin adducts of the H2A's and H2B were also present in H2A:H2B dimers.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hatch, C L -- Bonner, W M -- Moudrianakis, E N -- New York, N.Y. -- Science. 1983 Jul 29;221(4609):468-70.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6306766" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cattle ; Chromatography, Gel ; Chromosomal Proteins, Non-Histone/*metabolism ; Electrophoresis, Polyacrylamide Gel ; Histones/isolation & purification/*metabolism ; Ubiquitins
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    Contiguity to males in utero affects avoidance responding in adult female mice (1983)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1983-04-22
    Description: Female mice that had been situated in utero between two female fetuses displayed higher levels of active avoidance responding in adult life than females that had been located between two male fetuses and males for whom uterine position was without effect. Uterine position, therefore, influences acquired as well as species-typical behaviors.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hauser, H -- Gandelman, R -- New York, N.Y. -- Science. 1983 Apr 22;220(4595):437-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6836288" target="_blank"〉PubMed〈/a〉
    Keywords: Androgens/physiology ; Animals ; Avoidance Learning/*physiology ; Female ; Fetus/*physiology ; Male ; Mice ; Pregnancy ; Rats ; Sex Factors ; Uterus
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    A cellular mechanism of classical conditioning in Aplysia: activity-dependent amplification of presynaptic facilitation (1983)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1983-01-28
    Description: A training procedure analogous to differential classical conditioning produces differential facilitation of excitatory postsynaptic potentials (EPSP's) in the neuronal circuit for the siphon withdrawal reflex in Aplysia. Thus, tail shock (the unconditioned stimulus) produces greater facilitation of the monosynaptic EPSP from a siphon sensory neuron to a siphon motor neuron if the shock is preceded by spike activity in the sensory neuron than if the shock and spike activity occur in a specifically unpaired pattern or if the shock occurs alone. Further experiments indicate that this activity-dependent amplification of facilitation is presynaptic in origin and involves a differential increase in spike duration and thus in Ca2+ influx in paired versus unpaired sensory neurons. The results of these cellular experiments are quantitatively similar to the results of behavioral experiments with the same protocol and parameters, suggesting that activity-dependent amplification of presynaptic facilitation may make a significant contribution to classical conditioning of the withdrawal reflex.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hawkins, R D -- Abrams, T W -- Carew, T J -- Kandel, E R -- 5K02 MH0081/MH/NIMH NIH HHS/ -- 5KO5 MH 18558/MH/NIMH NIH HHS/ -- 5T32NS07062-06/NS/NINDS NIH HHS/ -- etc. -- New York, N.Y. -- Science. 1983 Jan 28;219(4583):400-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6294833" target="_blank"〉PubMed〈/a〉
    Keywords: Action Potentials ; Afferent Pathways/physiology ; Animals ; Aplysia/*physiology ; Calcium/physiology ; Conditioning, Classical/*physiology ; Learning/*physiology ; Motor Neurons/physiology ; Reflex ; Synaptic Transmission
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    In vivo one-dimensional imaging of phosphorus metabolites by phosphorus-31 nuclear magnetic resonance (1983)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1983-06-10
    Description: A phosphorus-31 nuclear magnetic resonance imaging technique has been used to obtain information on phosphorus metabolites from different spatial regions of tissues in vivo. The technique for selection of planes through the tissue is based on phase-encoding of spin echoes and was used to obtain one-dimensional discrimination of phosphorus-31 spectra from different parts of the tissue simultaneously. Specimens were resolved into 16 distinct slices and a signal-to-noise ratio of about 20 to 1 was obtained in 1/2 hour. Results are presented for phantoms, rat legs, and gerbil heads.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Haselgrove, J C -- Subramanian, V H -- Leigh, J S Jr -- Gyulai, L -- Chance, B -- New York, N.Y. -- Science. 1983 Jun 10;220(4602):1170-3.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6857240" target="_blank"〉PubMed〈/a〉
    Keywords: Adenosine Triphosphate/metabolism ; Animals ; Gerbillinae ; Magnetic Resonance Spectroscopy/*methods ; Phosphocreatine/metabolism ; Phosphoric Acids/metabolism ; Phosphorus/*metabolism ; Rats
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    The thymus-adrenal connection: thymosin has corticotropin-releasing activity in primates (1983)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1983-12-23
    Description: Endotoxin-free thymosin fraction 5 elevated corticotropin, beta-endorphin, and cortisol in a dose- and time-dependent fashion when administered intravenously to prepubertal cynomolgus monkeys. Two synthetic component peptides of thymosin fraction 5 had no acute effects on pituitary function, suggesting that some other peptides in thymosin fraction 5 were responsible for its corticotropin-releasing activity. In agreement with these observations, total thymectomy of juvenile macaques was associated with decreases in plasma cortisol, corticotropin, and beta-endorphin. These findings indicate that the prepubertal primate thymus contains corticotropin-releasing activity that may contribute to a physiological immunoregulatory circuit between the developing immunological and pituitary-adrenal systems.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Healy, D L -- Hodgen, G D -- Schulte, H M -- Chrousos, G P -- Loriaux, D L -- Hall, N R -- Goldstein, A L -- CA 24974/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1983 Dec 23;222(4630):1353-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6318312" target="_blank"〉PubMed〈/a〉
    Keywords: Adrenocorticotropic Hormone/*blood ; Animals ; Dose-Response Relationship, Drug ; Endorphins/blood ; Female ; Hydrocortisone/blood ; Kinetics ; Macaca fascicularis ; Thymectomy ; Thymosin/analogs & derivatives/*pharmacology ; Thymus Gland/*physiology ; beta-Endorphin
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    Vasoactive intestinal polypeptide and muscarinic receptors: supersensitivity induced by long-term atropine treatment (1983)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1983-04-29
    Description: Long-term treatment of rats with atropine induced large increases in the numbers of muscarinic receptors and receptors for vasoactive intestinal polypeptide in the salivary glands. Since receptors for vasoactive intestinal polypeptide coexist with muscarinic receptors on the same neurons in this preparation, the results suggest that a drug that alters the sensitivity of one receptor may also affect the sensitivity of the receptor for a costored transmitter and in this way contribute to the therapeutic or side effects of the drugs.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hedlund, B -- Abens, J -- Bartfai, T -- New York, N.Y. -- Science. 1983 Apr 29;220(4596):519-21.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6132446" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Atropine/*pharmacology ; Gastrointestinal Hormones/*metabolism ; Male ; Neurotransmitter Agents/metabolism ; Rats ; Rats, Inbred Strains ; Receptors, Cholinergic/*drug effects ; Receptors, Muscarinic/analysis/*drug effects ; Salivary Glands/analysis/innervation ; Vasoactive Intestinal Peptide/analysis/*metabolism
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    Simple repeat array in Epstein-Barr virus DNA encodes part of the Epstein-Barr nuclear antigen (1983)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1983-06-24
    Description: The size of the Epstein-Barr virus (EBV) nuclear antigen (EBNA) in cells infected with different EBV isolates varies directly with the size of the EBV triplet repeat array, IR3. The isolate with the largest IR3 fragment has approximately 170 more codons than the isolates with the smallest IR3 fragment; it encodes an EBNA which is approximately 17,000 daltons larger than the smallest EBNA. The EBV IR3 encodes part of a 2-kilobase exon of a latently infected cell messenger RNA which must be translated into a repetitive amino acid domain of EBNA.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hennessy, K -- Heller, M -- van Santen, V -- Kieff, E -- CA 17281/CA/NCI NIH HHS/ -- CA 19264/CA/NCI NIH HHS/ -- GM 07183/GM/NIGMS NIH HHS/ -- etc. -- New York, N.Y. -- Science. 1983 Jun 24;220(4604):1396-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6304878" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antigens, Viral/*genetics ; Base Sequence ; Cell Nucleus/immunology ; DNA, Viral/*genetics ; Epstein-Barr Virus Nuclear Antigens ; Herpesvirus 4, Human/*genetics/immunology ; Humans ; Mice ; RNA, Viral/genetics
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    Mutations affecting programmed cell deaths in the nematode Caenorhabditis elegans (1983)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1983-06-17
    Description: Mutations in two nonessential genes specifically block the phagocytosis of cells programmed to die during development. With few exceptions, these cells still die, suggesting that, in nematodes, engulfment is not necessary for most programmed deaths. Instead, these deaths appear to occur by cell suicide.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hedgecock, E M -- Sulston, J E -- Thomson, J N -- New York, N.Y. -- Science. 1983 Jun 17;220(4603):1277-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6857247" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Autophagy ; Caenorhabditis/genetics/*growth & development ; *Cell Survival ; DNA/metabolism ; Female ; Male ; Microscopy, Electron ; *Mutation
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    Swine influenza-like viruses in turkeys: potential source of virus for humans? (1983)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1983-04-08
    Description: Influenza A viruses (subtype H1N1), recently isolated from turkeys in different areas of the United States, were determined to be closely related to strains typically associated with pigs. This conclusion was based on comparisons of H1N1 isolates from pigs, humans, ducks, and turkeys with polyclonal and monoclonal antibodies, RNA-RNA competitive hybridization, and replication studies. One of the H1N1 isolates from turkeys caused influenza in a laboratory technician, who displayed fever, respiratory illness, virus shedding, and seroconversion. These results suggest that turkeys as well as pigs are involved in the maintenance of these viruses and their transmission to humans.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hinshaw, V S -- Webster, R G -- Bean, W J -- Downie, J -- Senne, D A -- AI-02649/AI/NIAID NIH HHS/ -- AI-08831/AI/NIAID NIH HHS/ -- AI-16841/AI/NIAID NIH HHS/ -- etc. -- New York, N.Y. -- Science. 1983 Apr 8;220(4593):206-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6298942" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antibodies, Monoclonal/immunology ; Antigens, Viral/immunology ; Ducks/microbiology ; Ferrets/immunology ; Humans ; Influenza A virus/immunology/*isolation & purification ; Orthomyxoviridae Infections/*transmission ; Poultry Diseases/microbiology ; RNA, Viral/metabolism ; Swine/microbiology ; Turkeys/*microbiology
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    Protons and anaerobiosis (1983)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1983-03-25
    Description: During oxygen limitation in animals, glucose can be fermented via several metabolic pathways varying in energetic efficiency and leading to various end products (such as lactate, alanopine, octopine, succinate, or propionate). Because of opposite pH dependencies of proton production by fermentation and by hydrolysis of adenosine triphosphate formed in the fermentation, the total number of moles of protons generated is always two per mole of the fermentable substrate. However, two and three times more adenosine triphosphate can be turned over per mole of protons produced in succinate and propionate fermentations, respectively, than in lactate fermentation.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hochachka, P W -- Mommsen, T P -- New York, N.Y. -- Science. 1983 Mar 25;219(4591):1391-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6298937" target="_blank"〉PubMed〈/a〉
    Keywords: Adenosine Triphosphate/metabolism ; Aerobiosis ; Anaerobiosis ; Animals ; Fermentation ; Glucose/*metabolism ; *Glycolysis ; Lactates/metabolism ; Mollusca/metabolism ; *Protons ; Species Specificity
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    Radioactive labeling of antibody: a simple and efficient method (1983)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1983-05-06
    Description: A simple and efficient method of covalently coupling the strong chelator diethylenetriaminepentaacetic acid to proteins was developed for radiolabeling immunoglobulin G antibodies. After being coupled and labeled with indium-111, a monoclonal antibody to carcinoembryonic antigen retained its ability to bind to its antigen in vitro and in vivo. In nude mice with a human colorectal xenograft, 41 percent of the injected radioactivity became localized in each gram of xenograft at 24 hours compared with 9 percent for control antibody and 19 percent for radioiodinated antibody to carcinoembryonic antigen.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hnatowich, D J -- Layne, W W -- Childs, R L -- Lanteigne, D -- Davis, M A -- Griffin, T W -- Doherty, P W -- 1 RO1 CA26968/CA/NCI NIH HHS/ -- 1 RO1 GM26780/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1983 May 6;220(4597):613-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6836304" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Antibodies ; Antibodies, Monoclonal/immunology ; Carcinoembryonic Antigen/immunology ; Chromatography, High Pressure Liquid ; Humans ; Immunoglobulin G/immunology ; Isotope Labeling/*methods ; Mice ; Mice, Inbred BALB C ; Mice, Nude ; Neoplasm Transplantation ; Pentetic Acid
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    Intracellular calcium measurements with arsenazo III during cyclic AMP injections into molluscan neurons (1983)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1983-02-18
    Description: Injections of cyclic adenosine monophosphate into molluscan neurons often produce a transient membrane depolarization. By using the calcium indicator dye arsenazo III, it was found that cyclic nucleotide injections into neurons of Archidoris montereyensis resulted in elevation of internal calcium concentrations. However, this was demonstrated to be a secondary consequence of an induced increase in membrane sodium permeability, and not due to any direct effect of cyclic adenosine monophosphate on cellular calcium influx or internal calcium regulating processes.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hockberger, P -- Connor, J A -- GMO-7143/GM/NIGMS NIH HHS/ -- NS-15186/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 1983 Feb 18;219(4586):869-71.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6297009" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Arsenazo III ; Calcium/*metabolism ; Cyclic AMP/*metabolism ; Cytoplasm/metabolism ; Membrane Potentials ; Mollusca ; Neurons/metabolism ; Sodium/physiology
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    Implication of nonlinear kinetics on risk estimation in carcinogenesis (1983)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1983-03-04
    Description: Efforts in estimating carcinogenic risk in humans from long-term exposure to chemical carcinogens have centered on the problem of low-dose extrapolation. For chemicals with metabolites that interact with DNA, it may be more meaningful to relate tumor response to the concentration of the DNA adducts in the target organ rather than to the applied dose. Many data suggest that the relation between tumor response and concentration of DNA adducts in the target organ may be linear. This implies that the nonlinearities of the dose-response curve for tumor induction may be due to the kinetic processes involved in the formation of carcinogen metabolite--DNA adducts. Of particular importance is the possibility that the kinetic processes may show a nonlinear "hockey-stick" like behavior which results from saturation of detoxification or DNA repair processes. The mathematical models typically used for low-dose extrapolation are shown potentially to overestimate risk by several orders of magnitude when nonlinear kinetics are present.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hoel, D G -- Kaplan, N L -- Anderson, M W -- New York, N.Y. -- Science. 1983 Mar 4;219(4588):1032-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6823565" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Carcinogens/*administration & dosage ; Cell Transformation, Neoplastic/*drug effects ; DNA, Neoplasm/genetics ; Dose-Response Relationship, Drug ; Humans ; Kinetics ; Models, Biological ; Neoplasms/*chemically induced ; Risk
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    Lines of T lymphocytes induce or vaccinate against autoimmune arthritis (1983)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1983-01-07
    Description: The pathophysiology of autoimmune arthritis was studied by selecting and isolating lines of effector T lymphocytes from rats administered an arthritogenic dose of Mycobacterium tuberculosis in complete Freund's adjuvant to induce adjuvant arthritis. Irradiated rats were intravenously inoculated with a cell line characterized by proliferative reactivity to Mycobacterium tuberculosis and, to a lesser degree, to rat collagen type II. This produced arthritis in all the irradiated rats. Nonirradiated recipients failed to develop arthritis. However, such rats, and those recovering from cell-mediated arthritis, were resistant to subsequent attempts to induce adjuvant arthritis. Lines of T lymphocytes selected for responsiveness to other antigens had no effect. Therefore, a line of T lymphocytes responsive to bacteria or to collagen type II could either induce autoimmune arthritis or serve as an agent of vaccination against it.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Holoshitz, J -- Naparstek, Y -- Ben-Nun, A -- Cohen, I R -- NS 18168/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 1983 Jan 7;219(4580):56-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6336851" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Arthritis/*etiology ; Arthritis, Experimental/etiology ; Autoimmune Diseases/*etiology ; Collagen/immunology ; Lymphocyte Activation ; Rats ; T-Lymphocytes/*immunology ; Vaccination ; Whole-Body Irradiation
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    A micromechanical contribution to cochlear tuning and tonotopic organization (1983)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1983-11-04
    Description: The response properties of hair cells and nerve fibers in the alligator lizard cochlea are frequency selective and tonotopically organized with longitudinal position in the organ. The lengths of the hair-cell hair bundles also vary monotonically with longitudinal position. In this study, quantitative measurements were made of the motion of individual hair bundles in an excised preparation of the cochlea stimulated at auditory frequencies. The angular displacement of hair bundles is frequency selective and tonotopically organized, demonstrating the existence of a micromechanical tuning mechanism.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Holton, T -- Hudspeth, A J -- GM07301/GM/NIGMS NIH HHS/ -- NS13154/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 1983 Nov 4;222(4623):508-10.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6623089" target="_blank"〉PubMed〈/a〉
    Keywords: Acoustic Stimulation ; Animals ; Basilar Membrane/physiology ; Cochlea/*physiology ; Hair Cells, Auditory/*physiology ; Lizards ; Neurons/physiology
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    Systemic cholinergic agents induce seizures and brain damage in lithium-treated rats (1983)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1983-04-15
    Description: Administration of pilocarpine or physostigmine to rats treated with lithium chloride produced sustained limbic seizures, widespread brain damage, and increased concentrations of D-myo-inositol-1-phosphate (a metabolite of the phosphoinositides, lipids involved in membrane receptor function) in the brain. The syndrome was preventable with atropine. The physostigmine doses and concentrations of blood lithium that caused the syndrome are similar to those considered appropriate for psychiatric chemotherapy.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Honchar, M P -- Olney, J W -- Sherman, W R -- MH-14677/MH/NIMH NIH HHS/ -- MH-38894/MH/NIMH NIH HHS/ -- NS-05159/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 1983 Apr 15;220(4594):323-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6301005" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Atropine/pharmacology ; Brain Chemistry/drug effects ; Chlorides/adverse effects ; Drug Interactions ; Humans ; Inositol/analogs & derivatives/analysis ; *Inositol Phosphates ; Lithium/*adverse effects ; Lithium Chloride ; Male ; Parasympathomimetics/*adverse effects ; Physostigmine/adverse effects ; Pilocarpine/adverse effects ; Rats ; Rats, Inbred Strains ; Seizures/*chemically induced ; Substance-Related Disorders/*etiology
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    A parathyroid hormone inhibitor in vivo: design and biological evaluation of a hormone analog (1983)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1983-06-03
    Description: A synthetic analog of bovine parathyroid hormone (bPTH), [tyrosine-34] bPTH-(7-34)NH2, was found to inhibit parathyroid hormone action in vivo. When the analog and parathyroid hormone were infused simultaneously to rats at a molar ratio of 200 to 1, the analog inhibited the excretion of urinary phosphate and adenosine 3',5'-monophosphate. When infused alone at the same dose rate, the analog was devoid of agonist activity. The compound was prepared by following design principles developed for inhibitors of parathyroid hormone, and is believed to be the first antagonist of parathyroid hormone that is effective in vivo.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Horiuchi, N -- Holick, M F -- Potts, J T Jr -- Rosenblatt, M -- AM11749/AM/NIADDK NIH HHS/ -- New York, N.Y. -- Science. 1983 Jun 3;220(4601):1053-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6302844" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Cyclic AMP/urine ; Dose-Response Relationship, Drug ; Male ; Parathyroid Hormone/*antagonists & inhibitors/*pharmacology ; Peptide Fragments/*pharmacology ; Phosphates/urine ; Rats
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  • 83
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    Active shortening retards the decline of the intracellular calcium transient in mammalian heart muscle (1983)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1983-07-08
    Description: When active shortening of the cat papillary muscle was allowed at any time during a contraction, the intracellular concentration of free calcium ions, detected with the calcium-sensitive bioluminescent protein aequorin, was higher than at comparable times in isometric twitches. The difference was not attributable to the differences of length involved or to motion artifacts, and must have been related to the act of shortening or the difference in force development in the two types of contractions. This observation and the phenomenon of shortening deactivation are both consistent with the hypothesis that attachment of cross bridges increases the affinity of the myofilaments for calcium ions.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Housmans, P R -- Lee, N K -- Blinks, J R -- HL 12186/HL/NHLBI NIH HHS/ -- TW 03046/TW/FIC NIH HHS/ -- New York, N.Y. -- Science. 1983 Jul 8;221(4606):159-61.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6857274" target="_blank"〉PubMed〈/a〉
    Keywords: Aequorin ; Animals ; Calcium/analysis/*physiology ; Cats ; Extracellular Space/analysis ; *Myocardial Contraction ; Myocardium/*metabolism ; Sarcoplasmic Reticulum/physiology
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  • 84
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    Alternating current delivered into the scala media alters sound pressure at the eardrum (1983)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1983-11-04
    Description: Alternating current delivered into the scala media of the gerbil cochlea modulates the amplitude of a test tone measured near the eardrum. Variations in the electromechanical effect with acoustic stimulus parameters and observed physiological vulnerability suggest that cochlear hair cells are the biophysical origin of the process. Cochlear hair cells have traditionally been thought of as passive receptor cells, but they may play an active role in cochlear micromechanics.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hubbard, A E -- Mountain, D C -- NS16589/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 1983 Nov 4;222(4623):510-2.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6623090" target="_blank"〉PubMed〈/a〉
    Keywords: Acoustic Stimulation ; Animals ; Cochlea/*physiology ; Cochlear Duct/*physiology ; Ear, Middle/*physiology ; Electric Stimulation ; Gerbillinae ; Pressure ; Sound
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  • 85
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    Depletion of intracellular polyamines may alter DNA conformation in 9L rat brain tumor cells (1983)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1983-07-22
    Description: Depletion of polyamines in 9L rat brain tumor cells by treatment with alpha-difluoromethylornithine dramatically altered DNA conformation as measured by viscoelastometry. The reduction of intracellular putrescine and spermidine concentrations to less than 5 percent of their concentrations in control cells decreased the sensitivity of 9L cell DNA to x-irradiation and increased the maximum viscoelastic retardation time of the DNA. Both of these phenomena were reversed by addition of exogenous putrescine.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hung, D T -- Marton, L J -- Deen, D F -- Shafer, R H -- CA-13525/CA/NCI NIH HHS/ -- CA-19658/CA/NCI NIH HHS/ -- CA-27343/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1983 Jul 22;221(4608):368-70.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6408733" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Brain Neoplasms/*metabolism ; DNA, Neoplasm/*metabolism ; Eflornithine ; Molecular Conformation ; Ornithine/analogs & derivatives/pharmacology ; Polyamines/*metabolism ; Putrescine/metabolism ; Rats ; Spermidine/metabolism ; Viscosity
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  • 86
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    Eye dominance columns from an isogenic double-nasal frog eye (1983)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1983-07-15
    Description: Removing the posterior (temporal) two-thirds of the Xenopus eye bud produces a remaining fragment, which becomes round and grows to a normal adult size eye. Electrophysiological and anatomical analyses showed that each of the two halves of this eye projected across the entire optic tectum in mirror image (double-nasal) fashion, and that fibers from each half-eye sorted out to form eye dominance stripes on the tectum. That both halves of the mirror-symmetric map were derived from only one animal, and from only one side of the head, rules out global markers such as right versus left and histocompatibility differences as causing the formation of these stripes.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Ide, C F -- Fraser, S E -- Meyer, R L -- NS16319/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 1983 Jul 15;221(4607):293-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6857287" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Electrophysiology ; Eye/*innervation ; Optic Nerve/physiology ; Retina/physiology ; Superior Colliculi/physiology ; Vision, Ocular/*physiology ; Xenopus
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  • 87
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    Protein phosphatases: properties and role in cellular regulation (1983)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1983-07-22
    Description: Protein phosphorylation is a principal regulatory mechanism in the control of almost all cellular processes. The nature of the protein phosphatases that participate in these reactions has been a subject of controversy. Four enzymes, termed protein phosphatases 1, 2A, 2B, and 2C, account for virtually all of the phosphatase activity toward phosphoproteins involved in controlling glycogen metabolism, glycolysis, gluconeogenesis, fatty acid synthesis, cholesterol synthesis, and protein synthesis. The properties, physiological roles, and mechanisms for regulating the four protein phosphatases are reviewed.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Ingebritsen, T S -- Cohen, P -- New York, N.Y. -- Science. 1983 Jul 22;221(4608):331-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6306765" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Calcium/physiology ; Cyclic AMP/metabolism ; Glycogen/metabolism ; Liver/enzymology ; Muscles/enzymology ; Phosphoprotein Phosphatases/classification/*physiology ; Phosphoproteins/metabolism ; Phosphorylase Phosphatase/metabolism ; Phosphorylation ; Protein Biosynthesis ; Protein Kinases/physiology ; Rabbits ; Rats
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  • 88
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    Tumor-derived growth factor increases bone resorption in a tumor associated with humoral hypercalcemia of malignancy (1983)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1983-09-23
    Description: Evidence is presented that a tumor-derived transforming growth factor is responsible for stimulating bone resorption and causing hypercalcemia in an animal tumor model of the hypercalcemia of malignancy. Both conditioned medium harvested from cultured tumor cells and tumor extracts of the transplantable rat Leydig cell tumor associated with hypercalcemia contained a macromolecular bone resorbing factor with the chemical characteristics of a tumor-derived transforming growth factor.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Ibbotson, K J -- D'Souza, S M -- Ng, K W -- Osborne, C K -- Niall, M -- Martin, T J -- Mundy, G R -- AM-28149/AM/NIADDK NIH HHS/ -- CA-29537/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1983 Sep 23;221(4617):1292-4.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6577602" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Bone Resorption ; Calcium ; Cells, Cultured ; Culture Media ; Growth Substances/*physiology ; Hypercalcemia/*etiology ; Leydig Cell Tumor/complications/*physiopathology ; Male ; Neoplasm Proteins/*physiology ; Neoplasms, Experimental/complications/physiopathology ; Peptides/*physiology ; Rats ; Transforming Growth Factors
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  • 89
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    Some neurons of the rat central nervous system contain aromatic-L-amino-acid decarboxylase but not monoamines (1983)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1983-03-11
    Description: Neurons containing the enzyme aromatic-L-amino-acid decarboxylase (AADC) but lacking either tyrosine hydroxylase or serotonin were found in the spinal cord of neonatal and adult rats by light and electron microscopic immunocytochemistry. The majority of these neurons localized to area X of Rexed contact ependyma. Thus, spinal AADC neurons have the enzymatic capacity to catalyze directly the conversion of the amino acids tyrosine, tryptophan, or phenylalanine to their respective amines tyramine, tryptamine, or phenylethylamine. These amines normally present in the central nervous system may be of potential clinical significance as endogenous psychotomimetics.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Jaeger, C B -- Teitelman, G -- Joh, T H -- Albert, V R -- Park, D H -- Reis, D J -- HL-07379-04/HL/NHLBI NIH HHS/ -- HL-18974/HL/NHLBI NIH HHS/ -- New York, N.Y. -- Science. 1983 Mar 11;219(4589):1233-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6131537" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Aromatic-L-Amino-Acid Decarboxylases/*metabolism ; Biogenic Amines/*metabolism ; Brain/*metabolism ; Neurons/enzymology ; Neurotransmitter Agents/biosynthesis ; Rats ; Spinal Cord/*metabolism
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  • 90
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    Methyl 4,6-dichloro-4,6-dideoxy-alpha-D-galactopyranoside: an inhibitor of sweet taste responses in gerbils (1983)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1983-01-28
    Description: The sugar methyl 4,6-dichloro-4,6-dideoxy-alpha-D-galactopyranoside (DiCl-gal) is a new type of inhibitor of the gerbil's electrophysiological taste response to sucrose or saccharin. Saturated solutions of this compound alone barely stimulate the gerbil's taste nerve. But, when mixed with sucrose or saccharin, DiCl-gal suppresses the gerbil's taste response to these two sweeteners. In contrast, when mixed with sodium chloride or hydrochloric acid, DiCl-gal does not affect the taste responses to these compounds. However, unlike other inhibitors of sweet taste, the DiCl-gal taste suppression is short-lived and occurs only when the inhibitor is combined with the sweetener.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Jakinovich, W Jr -- R01 NS16022-02/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 1983 Jan 28;219(4583):408-10.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6849141" target="_blank"〉PubMed〈/a〉
    Keywords: Action Potentials/drug effects ; Animals ; Gerbillinae ; *Methylgalactosides/*pharmacology ; *Methylglycosides/*pharmacology ; Sodium Chloride ; Sweetening Agents ; Taste/*drug effects ; Taste Buds/drug effects
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  • 91
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    Neuromuscular patterns and the origin of trophic specialization in fishes (1983)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1983-03-11
    Description: The pattern of muscle electrical activity in the pharyngeal muscles of the mollusc-eating sunfish Lepomis microlophus is highly specialized in comparison with the pattern displayed by most other members of the sunfish family and does not change when different prey are eaten. The closest genealogical relative of this species has the specialized muscle activity pattern for crushing prey when it feeds on snails but uses the primitive sequence of muscle activity during swallowing of other prey. The ability of species that crush snails to use molluscan prey effectively is due primarily to the evolutionary transformation of the neuromuscular program controlling the trophic apparatus.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lauder, G V -- New York, N.Y. -- Science. 1983 Mar 11;219(4589):1235-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6828853" target="_blank"〉PubMed〈/a〉
    Keywords: Action Potentials ; Animals ; Biological Evolution ; Eating ; Fishes/*physiology ; Mastication ; Pharyngeal Muscles/physiology
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  • 92
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    Intermolecular interactions in collagen self-assembly as revealed by Fourier transform infrared spectroscopy (1983)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1983-06-17
    Description: When a solution of collagen molecules, at neutral pH and moderate ionic strength, is warmed from 4 degrees to 30 degrees C, a spontaneous self-assembly process takes place in which native-type collagen fibers are produced. Events occurring during thermally induced fibrillogenesis process can be monitored, in aqueous media and in real time, by Fourier transform infrared spectroscopic techniques. Tentative assignments of observed spectral bands are given.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Jakobsen, R J -- Brown, L L -- Hutson, T B -- Fink, D J -- Veis, A -- New York, N.Y. -- Science. 1983 Jun 17;220(4603):1288-90.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6857249" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Collagen/*metabolism ; Connective Tissue/metabolism ; Rats ; Spectrophotometry, Infrared ; Temperature
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  • 93
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    Heinz-body hemolytic anemia from the ingestion of crude oil: a primary toxic effect in marine birds (1983)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1983-05-20
    Description: Hemolytic anemia developed in young herring gulls and Atlantic puffins given daily oral doses of a Prudhoe Bay crude oil. Anemia developed 4 to 5 days after the initiation of oil ingestion and was accompanied by Heinz-body formation and a strong regenerative response. The data evince a toxic effect on circulating red blood cells involving an oxidative biochemical mechanism and the first clear evidence of a primary mechanism of toxicity from the ingestion of crude oil by birds.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Leighton, F A -- Peakall, D B -- Butler, R G -- New York, N.Y. -- Science. 1983 May 20;220(4599):871-3.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6844918" target="_blank"〉PubMed〈/a〉
    Keywords: Anemia, Hemolytic/*chemically induced/pathology ; Animals ; Bird Diseases/*chemically induced ; Birds ; Fuel Oils/*adverse effects ; Heinz Bodies/*pathology/ultrastructure ; Microscopy, Electron ; Petroleum/*adverse effects
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  • 94
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    Myoglobin gene is a big surprise. The first analysis of a myoglobin gene reveals some striking similarities and some unexpected differences from hemoglobin genes (1983)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1983-03-18
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lewin, R -- New York, N.Y. -- Science. 1983 Mar 18;219(4590):1312.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6828858" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Biological Evolution ; Genes ; Humans ; Myoglobin/*genetics
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  • 95
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    Morphine tolerance in genetically selected rats induced by chronically elevated saccharin intake (1983)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1983-08-26
    Description: Rats of line LC2-Hi that drank about 50 milliliters of a highly palatable saccharin solution daily for 28 consecutive days did not show morphine analgesia or an opioid form of stress-induced analgesia and were not responsive to naloxone. These findings support the idea that chronically elevated saccharin intake may cause increased release and utilization of endogenous opiates.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lieblich, I -- Cohen, E -- Ganchrow, J R -- Blass, E M -- Bergmann, F -- New York, N.Y. -- Science. 1983 Aug 26;221(4613):871-3.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6879185" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Drug Tolerance ; Endorphins/physiology ; Morphine/*pharmacology ; Pain/physiopathology ; Rats ; Saccharin/*pharmacology ; Stress, Physiological/*physiopathology
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  • 96
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    Role of surface-active phospholipids in gastric cytoprotection (1983)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1983-03-18
    Description: Intragastric administration of a liposomal surfactant suspension markedly reduced acid-induced gastric ulcerogenesis and bleeding in rats. The concentration of surface-active molecules intrinsically present in the gastric mucosa was increased two to six times by administration of 16,16-dimethyl prostaglandin E2. Thus, local accumulation of surface-active phospholipids may be an integral component of the cytoprotective mechanism activated by prostaglandin treatment.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lichtenberger, L M -- Graziani, L A -- Dial, E J -- Butler, B D -- Hills, B A -- New York, N.Y. -- Science. 1983 Mar 18;219(4590):1327-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6828859" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Gastric Mucosa/*physiology ; Indomethacin/pharmacology ; Phospholipids/*physiology ; Prostaglandins/physiology ; Rats ; Stomach Ulcer/physiopathology ; Surface-Active Agents
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  • 97
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    Invasion by alien genes (1983)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1983-05-20
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lewin, R -- New York, N.Y. -- Science. 1983 May 20;220(4599):811.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6844917" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; DNA/genetics ; DNA, Mitochondrial/genetics ; Denmark ; Drosophila/genetics ; Female ; Mice/*genetics ; Muridae/*genetics
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  • 98
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    How mammalian RNA returns to its genome (1983)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1983-03-04
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lewin, R -- New York, N.Y. -- Science. 1983 Mar 4;219(4588):1052-4.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6186029" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Base Sequence ; Cell Nucleus/physiology ; DNA/*genetics ; Humans ; Poly A/genetics ; RNA/*genetics ; Repetitive Sequences, Nucleic Acid ; Transcription, Genetic
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  • 99
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    Yolk pigments of the Mexican leaf frog (1983)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1983-02-25
    Description: Eggs of the Mexican leaf frog contain blue and yellow pigments identified as biliverdin and lutein, respectively. Both pigments are bound to proteins that occur in crystalline form in the yolk platelet. The major blue pigment is biliverdin IX alpha. The eggs vary in color from brilliant blue to pale yellow-green depending on the amount of each pigment. These pigments may provide protective coloration to the eggs.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Marinetti, G V -- Bagnara, J T -- New York, N.Y. -- Science. 1983 Feb 25;219(4587):985-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6681678" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Anura ; Biliverdine/analysis ; Female ; Lutein/analysis ; Ovum/*analysis ; Pigments, Biological/*analysis ; Spectrum Analysis
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    Synthesizing the opioid peptides (1983)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1983-04-22
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Marx, J L -- New York, N.Y. -- Science. 1983 Apr 22;220(4595):395-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6836282" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Aplysia/physiology ; Endorphins/*biosynthesis/genetics ; Humans ; Mice ; Nervous System Physiological Phenomena ; Pituitary Hormones, Anterior/biosynthesis/genetics ; Pro-Opiomelanocortin ; Protein Precursors/biosynthesis/genetics ; RNA, Messenger/metabolism ; Rats
    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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