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  • Male  (627)
  • Time Factors  (127)
  • Chemistry
  • Physics
  • American Association for the Advancement of Science (AAAS)  (750)
  • 1980-1984  (750)
  • 1925-1929
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  • 101
    Publication Date: 1981-06-05
    Description: Certain measures of the auditory average evoked response are sensitive to alcohol and provide evidence for abstinence and tolerance during and after 10 days of alcohol consumption by nonalcoholics. Electroencephalographic techniques provide a single sensitive measure for the study of the etiology of tolerance and abstinence with particular reference to a new area of investigation with nonaddicted humans.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Zilm, D H -- Kaplan, H L -- Capell, H -- New York, N.Y. -- Science. 1981 Jun 5;212(4499):1175-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7233213" target="_blank"〉PubMed〈/a〉
    Keywords: Acoustic Stimulation ; *Alcohol Drinking ; Alcoholism/*physiopathology ; Ethanol/pharmacology ; Evoked Potentials/drug effects ; Eye Movements/drug effects ; Heart Rate/drug effects ; Humans ; Male ; Memory/drug effects ; Posture/drug effects ; *Substance Withdrawal Syndrome
    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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  • 102
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1981-06-26
    Description: The development of paranoid reactions was investigated in normal people experiencing a temporary loss of hearing. In a social setting, subjects made partially deaf by hypnotic suggestion, but kept unaware of the source of their deafness, became more paranoid as indicated on a variety of assessment measures. The results support a hypothesizes cognitive-social mechanism for the clinically observed relationship between paranoia and deafness in the elderly.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Zimbardo, P G -- Andersen, S M -- Kabat, L G -- New York, N.Y. -- Science. 1981 Jun 26;212(4502):1529-31.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7233242" target="_blank"〉PubMed〈/a〉
    Keywords: Hearing Loss/*psychology ; Hearing Loss, Functional/*psychology ; Humans ; Hypnosis ; Male ; Paranoid Disorders/*etiology ; Personality Tests
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  • 103
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1981-05-01
    Description: Lead acetate (0.02 or 0.5 percent) was administered to dams throughout the lactation period with half of the litters continuing on lead after weaning. Drug thresholds for d-amphetamine were determined by using the drug-discrimination learning paradigm. All the offspring that had been exposed to lead were less sensitive to the stimulus properties of d-amphetamine irrespective of whether or not they had continued on lead after weaning.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Zenick, H -- Goldsmith, M -- New York, N.Y. -- Science. 1981 May 1;212(4494):569-71.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7209554" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Behavior, Animal/drug effects ; Dextroamphetamine/*pharmacology ; Discrimination Learning/*physiology ; Disease Models, Animal ; Female ; Fetus/drug effects ; Lead Poisoning/*physiopathology ; Male ; Pregnancy ; Rats
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  • 104
    Publication Date: 1982-10-08
    Description: Sounds recorded in Dallas at the time of the assassination of John F. Kennedy were analyzed by two research groups, whose reports formed the basis for the opinion that two gunmen fired at President Kennedy. These reports and the acoustic evidence have been studied by the Committee on Ballistic Acoustics, and further acoustic analyses, including sound spectrograms, have been performed. The committee finds that the acoustic data do not support a conclusion that a second gunman was involved in the assassination.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉New York, N.Y. -- Science. 1982 Oct 8;218(4568):127-33.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6750789" target="_blank"〉PubMed〈/a〉
    Keywords: Acoustics ; *Famous Persons ; *Forensic Medicine ; History, 20th Century ; Humans ; Male ; Texas ; *Wounds, Gunshot
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  • 105
    Publication Date: 1982-10-29
    Description: Exposure of rats to cimetidine during intrauterine life and the immediate neonatal period results in hypoandrogenization in adult life with decreased weights of androgen-dependent tissues and decreased concentrations of testosterone. Moreover, sexual behavior patterns in adult life are disturbed as shown by a lack of sexual motivation and decreased performance.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Anand, S -- Van Thiel, D H -- New York, N.Y. -- Science. 1982 Oct 29;218(4571):493-4.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7123252" target="_blank"〉PubMed〈/a〉
    Keywords: Abnormalities, Drug-Induced/*etiology ; Animals ; Animals, Suckling ; Cimetidine/metabolism/*toxicity ; Female ; Guanidines/*toxicity ; Male ; Pregnancy ; Pregnancy, Animal/drug effects ; Rats ; Sex Differentiation/*drug effects ; Sexual Behavior, Animal/drug effects
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  • 106
    Publication Date: 1982-12-10
    Description: Rhodamine-123, a cationic laser dye, markedly reduced the clonal growth of carcinoma cells but had little effect on nontumorigenic epithelial cells in vitro. This selective inhibitory effect of Rhodamine-123 on some carcinomas is unusual since known anticancer drugs, such as arabinosyl cytosine and methotrexate, have not been shown to exhibit such selectivity in vitro.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Bernal, S D -- Lampidis, T J -- Summerhayes, I C -- Chen, L B -- New York, N.Y. -- Science. 1982 Dec 10;218(4577):1117-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7146897" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Carcinoma/*drug therapy ; Cell Line ; Cell Survival/drug effects ; Mice ; Mitochondria/metabolism ; Neoplasms, Experimental/drug therapy ; Rhodamine 123 ; Rhodamines/metabolism/therapeutic use ; Time Factors ; Urinary Bladder Neoplasms/drug therapy
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  • 107
    Publication Date: 1982-06-25
    Description: Golden Syrian hamsters were placed individually in cages with three drinking bottles--one empty, one containing water, and the third containing water and ethanol. Control hamsters received water only. After 1 year the experimental hamsters showed a significantly lower concentration of leucine-enkephalin-like immunoreactive substance in the basal ganglia than the control hamsters. This finding indicates that the action of ethanol involves endogenous peptidyl opiates.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Blum, K -- Briggs, A H -- Elston, S F -- DeLallo, L -- Sheridan, P J -- Sar, M -- New York, N.Y. -- Science. 1982 Jun 25;216(4553):1425-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7089531" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Basal Ganglia/*drug effects ; Cricetinae ; Endorphins/*analysis ; Enkephalin, Leucine ; Enkephalins/*analysis/metabolism ; Ethanol/metabolism/*pharmacology ; Mesocricetus ; Time Factors
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  • 108
    Publication Date: 1982-01-08
    Description: (+/-)-N-Allylnormetazocine is a benzomorphan opioid with psychotomimetic effects. The pure stereoisomers of this compound, as well as the racemic mixture, were compared to phencyclidine for their behavioral effects on squirrel monkeys and rats trained to discriminate phencyclidine from saline. Dose-response determinations were made for responses to phencyclidine, to a racemic mixture of N-allylnormetazocine, and to the pure levo and dextro isomers of N-allylnormetazocine. In both rats and monkeys, the dextro isomer and the racemic mixture produced dose-dependent responses appropriate for phencyclidine; the levo isomer did not produce the responses appropriate for phencyclidine at any of the doses tested. In both species, the levo isomer was more potent than the dextro isomer in decreasing the rate of responding. Thus racemic N-allylnormetazocine is a mixture of compounds that produce different behavioral effects.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Brady, K T -- Balster, R L -- May, E L -- DA-00490/DA/NIDA NIH HHS/ -- DA-01442/DA/NIDA NIH HHS/ -- New York, N.Y. -- Science. 1982 Jan 8;215(4529):178-80.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6274022" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Behavior, Animal/*drug effects ; Male ; Naloxone/pharmacology ; Phenazocine/*analogs & derivatives/pharmacology ; Phencyclidine/pharmacology ; Rats ; Rats, Inbred Strains ; Receptors, Opioid/drug effects ; Saimiri ; Stereoisomerism ; Structure-Activity Relationship
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  • 109
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1982-03-12
    Description: Brief tetanic stimulation of the preganglionic nerves to the superior cervical ganglion enhances the postganglionic response to single preganglionic stimuli for 1 to 3 hours. This long-term potentiation of transmission through the ganglion is apparently not attributable to a persistent muscarinic action of the preganglionic neurotransmitter, acetylcholine, since neither the magnitude nor the time course of the phenomenon is reduced by atropine. The decay of long-term potentiation can be described by a first-order kinetic process with a mean time constant of 80 minutes. We conclude that long-term potentiation, once considered a unique property of the hippocampus, is in fact a more general feature of synaptic function. This form of synaptic memory may significantly influence information processing and control in other regions of the nervous system, including autonomic ganglia.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Brown, T H -- McAfee, D A -- 12116/PHS HHS/ -- NS 16576/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 1982 Mar 12;215(4538):1411-3.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6278593" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Ganglia, Sympathetic/*physiology ; Kinetics ; Learning/*physiology ; Neuronal Plasticity ; Rats ; Synapses/*physiology ; *Synaptic Transmission ; Time Factors
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  • 110
    Publication Date: 1982-01-15
    Description: The electrophysiological effects of ethanol in low doses (5 to 20 millimoles per liter or 23 to 92 milligrams per 100 milliliters) were examined intracellularly in CA1 cells of rat hippocampus in vitro. Inhibitory and excitatory postsynaptic potentials were increased when ethanol was applied to the respective synaptic terminal regions. Postsynaptically, ethanol caused a moderate hyperpolarization with increased membrane conductance, even when synaptic transmission was blocked. Ethanol augmented the hyperpolarization that followed repetitive firing or that followed the eliciting of calcium spikes in the presence of tetrodotoxin, but not the rapid afterhyperpolarization in calcium-free medium. Ethanol appears to augment calcium-mediated mechanisms both pre- and postsynaptically.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Carlen, P L -- Gurevich, N -- Durand, D -- R01 NS16660-01/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 1982 Jan 15;215(4530):306-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7053581" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Calcium/physiology ; Electric Conductivity ; Ethanol/*pharmacology ; Hippocampus/*drug effects/physiology ; Male ; Membrane Potentials/drug effects ; Potassium/physiology ; Rats ; Rats, Inbred Strains ; Synaptic Membranes/drug effects ; Tetrodotoxin/pharmacology
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  • 111
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1982-10-01
    Description: Cultural phenomena may show considerable stability over time and space. Transmission mechanisms responsible for their maintenance are worthy of theoretical and empirical inquiry; they are complex and each possible pathway has different effects on evolutionary stability of traits, as can be shown theoretically. A survey designed to evaluate the importance of some components of cultural transmission on a variety of traits showed that religion and politics are mostly determined in the family, a mode of transmission which guarantees high evolutionary stability and maintenance of high variation between and within groups.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Cavalli-Sforza, L L -- Feldman, M W -- Chen, K H -- Dornbusch, S M -- 10452/PHS HHS/ -- 20467/PHS HHS/ -- 20816/PHS HHS/ -- New York, N.Y. -- Science. 1982 Oct 1;218(4567):19-27.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7123211" target="_blank"〉PubMed〈/a〉
    Keywords: Attitude ; Child ; Cultural Characteristics ; *Culture ; Family ; Female ; Humans ; *Interpersonal Relations ; Male ; Marriage ; Models, Psychological ; *Parent-Child Relations
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  • 112
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1982-12-17
    Description: Localization of the anatomic substrate for anticonvulsant activity mediated by gamma-aminobutyric acid (GABA) was examined using intracerebral injections of GABA agonists. Blockade of tonic hindlimb extension in the maximal electroshock test and blockade of tonic and clonic seizures produced by pentylenetetrazole and bicuculline were obtained by elevating GABA in the ventral midbrain tegmentum. Elevation of GABA in forebrain and hindbrain areas had no effect on convulsant activity. Blockade of tonic and clonic seizures was also obtained after microinjections of the direct GABA receptor agonist, muscimol, into the midbrain. The substantia nigra was identified as the critical midbrain site for GABA-mediated anticonvulsant activity. Local injection of GABA agonists into the midbrain provided seizure protection without a widespread augmentation of GABA-mediated activity throughout the brain and without impairing either alertness or motor function. Synapses in the substantia nigra appear to represent an important control mechanism for inhibiting the propagation of generalized convulsions.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Iadarola, M J -- Gale, K -- DA 02206/DA/NIDA NIH HHS/ -- MH32359/MH/NIMH NIH HHS/ -- New York, N.Y. -- Science. 1982 Dec 17;218(4578):1237-40.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7146907" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Bicuculline/pharmacology ; Brain Mapping ; GABA Antagonists ; Male ; Muscimol/pharmacology ; Pentylenetetrazole/pharmacology ; Rats ; Seizures/*physiopathology ; Substantia Nigra/*physiology ; gamma-Aminobutyric Acid/*physiology
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  • 113
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1982-06-11
    Description: Local administration of human growth hormone in vivo to the cartilage growth plate of the proximal tibia of hypophysectomized rats resulted in accelerated longitudinal bone growth. This finding suggests that growth hormone directly stimulates the cells in the growth plate, and does not support the theory that the increase in the plasma concentration of somatomedin that follows growth hormone administration is the cause of this stimulation.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Isaksson, O G -- Jansson, J O -- Gause, I A -- New York, N.Y. -- Science. 1982 Jun 11;216(4551):1237-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7079756" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Bone Development/*drug effects ; Bone and Bones/*drug effects ; Growth Hormone/*pharmacology ; Male ; Prolactin/pharmacology ; Rats ; Somatomedins/pharmacology ; Stimulation, Chemical
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  • 114
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1982-10-08
    Description: In an eight-arm radial maze, normal rats demonstrated good immediate retention for the order of first items (primacy component of serial position curve) and last items (recency component of serial position curve) of an eight-item (arm) list. In contrast, rats with dorsal hippocampal lesions displayed, on an immediate retention test, disruption of the primacy but not the recency component of the serial position curve. Furthermore, imposing a 10-minute delay before the retention test impaired all components of the serial position curve. These results support correspondence in mnemonic function of the hippocampus in animals and humans.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kesner, R P -- Novak, J M -- RR07092-12/RR/NCRR NIH HHS/ -- New York, N.Y. -- Science. 1982 Oct 8;218(4568):173-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7123228" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Hippocampus/anatomy & histology/*physiology ; Male ; Memory/drug effects ; Rats ; *Serial Learning
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  • 115
    Publication Date: 1982-08-27
    Description: Neural activity of the red nucleus was studied in monkeys trained to operate devices requiring shoulder, elbow, wrist, hand, or finger movements. Single cell activity was more closely related to movements of the hand and fingers than to movements of the other joints. Discharge consistently preceded movements by a constant time interval; duration of discharge was highly correlated with the duration of movement; and discharge rate was highly correlated with movement velocity. These data suggest a role for the rubrospinal pathway in the initiation and control of hand movements.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kohlerman, N J -- Gibson, A R -- Houk, J C -- 5-R01-NS14703/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 1982 Aug 27;217(4562):857-60.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7100930" target="_blank"〉PubMed〈/a〉
    Keywords: Action Potentials ; Animals ; Electromyography ; Hand/*physiology ; Macaca fascicularis ; Macaca mulatta ; Male ; Movement ; Neural Conduction ; Neurons/physiology ; Red Nucleus/*physiology
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  • 116
    Publication Date: 1982-09-10
    Description: Alkyl-Substituted gamma-butyrolactones were synthesized and tested for their convulsant and anticonvulsant actions in mice and guinea pigs. The alpha-substituted compounds, alpha, alpha-dimethyl-, and alpha-ethyl-alpha-methyl-gamma-butyrolactone were anticonvulsant compounds with a spectrum of activity similar to that of ethosuximide. In contrast, beta-substituted compounds were convulsant agents similar to picrotoxinin. The alpha-substituted-gama-butyrolactones represent a new class of anticonvulsant drug with experimental and clinical potential.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Klunk, W E -- McKeon, A -- Covey, D F -- Ferrendelli, J A -- GM-07200/GM/NIGMS NIH HHS/ -- GM-24483/GM/NIGMS NIH HHS/ -- NS-14834/NS/NINDS NIH HHS/ -- etc. -- New York, N.Y. -- Science. 1982 Sep 10;217(4564):1040-2.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6810462" target="_blank"〉PubMed〈/a〉
    Keywords: *4-Butyrolactone/analogs & derivatives/*therapeutic use/toxicity ; Animals ; *Anticonvulsants ; Chemical Phenomena ; Chemistry ; Convulsants ; Drug Evaluation, Preclinical ; Electroencephalography ; Epilepsy, Absence/drug therapy ; Ethosuximide/pharmacology ; *Furans/*therapeutic use ; Guinea Pigs ; Mice ; Structure-Activity Relationship ; Trimethadione/pharmacology
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  • 117
    Publication Date: 1982-10-01
    Description: Rats rotated to the left when 5'-N-ethylcarboxamide adenosine (NECA) was injected into the left caudate nucleus and apomorphine was administered subcutaneously. The combination of NECA and apomorphine was more potent than L-(phenylisopropyl)adenosine and apomorphine in eliciting rotation, suggesting the involvement of adenosine receptors of the Ra type. The response was reduced when 2',5'-dideoxyadenosine was injected along with NECA into the caudate nucleus or when theorphylline was given intraperitoneally. Higher doses of apomorphine elicited a self-mutilatory response after the injection of NECA into the caudate nucleus. These results suggest that adenosine may be involved in the modulation of dopaminergic function in the striatum.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Green, R D -- Proudfit, H K -- Yeung, S M -- New York, N.Y. -- Science. 1982 Oct 1;218(4567):58-61.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7123218" target="_blank"〉PubMed〈/a〉
    Keywords: Adenosine/administration & dosage/*analogs & derivatives/pharmacology ; Adenosine-5'-(N-ethylcarboxamide) ; Animals ; Apomorphine/pharmacology ; Caudate Nucleus/*physiology ; Corpus Striatum/*physiology ; Dopamine/*physiology ; Injections ; Kinetics ; Male ; Motor Activity/drug effects ; Rats ; Rats, Inbred Strains ; Rotation ; Vasodilator Agents/*pharmacology
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  • 118
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1982-12-24
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kolata, G -- New York, N.Y. -- Science. 1982 Dec 24;218(4579):1295-6.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6183747" target="_blank"〉PubMed〈/a〉
    Keywords: Adult ; Anemia, Sickle Cell/therapy ; Azacitidine/therapeutic use ; Fetal Hemoglobin/biosynthesis/*genetics ; Hemoglobin, Sickle/biosynthesis ; Humans ; Male ; Thalassemia/therapy
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  • 119
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1982-07-02
    Description: Inosine peripherally administered to rats markedly suppressed spontaneous food intake and food intake induced by diazepam, muscimol, insulin, and food deprivation. The purines 2-deoxyguanosine and 2-deoxyinosine also suppressed food deprivation-induced feeding, whereas 7-methylinosine, which does not bind to the benzodiazepine binding site in vitro, had no effect on food intake when compared with controls. These results suggest that purines may represent endogenous substances that regulate food intake through interactions with the benzodiazepine receptor.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Levine, A S -- Morley, J E -- New York, N.Y. -- Science. 1982 Jul 2;217(4554):77-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7046046" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Appetite/*drug effects ; Deoxyguanosine/pharmacology ; Diazepam/pharmacology ; Eating/*drug effects ; Food Deprivation ; Inosine/analogs & derivatives/pharmacology ; Insulin/pharmacology ; Male ; Muscimol/pharmacology ; Purines/*pharmacology ; Rats ; Rats, Inbred Strains ; Structure-Activity Relationship
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  • 120
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1982-01-22
    Description: The larva of the blowfly Cochliomyia hominivorax, also known as the screwworm, eats the living flesh of cattle and sheep and other warm-blooded animals. A program to eradicate the screwworm in the United States was initiated in the 1950's. The program was very effective until 1968, but severe screwworm outbreaks occurred in 1972 to 1976 and in 1978. Although the program has again been effective since 1979, the possibility of outbreaks recurring in the future has highlighted the need for a broader understanding of the pest. Studies of screwworm populations in the United Stated and Mexico indicate that much of the genetic diversity of this insect is distributed among sympatric non-interbreeding populations. A new approach may be required to retain the effectiveness of the control program and to prevent a serious outbreak from threatening the economic viability of the U.S. livestock industry.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Richardson, R H -- Ellison, J R -- Averhoff, W W -- New York, N.Y. -- Science. 1982 Jan 22;215(4531):361-70.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7199204" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cattle ; Cattle Diseases/*prevention & control ; Diptera/classification/*physiology ; Ecology ; Infertility, Male ; Insect Control/methods ; Karyotyping ; Male ; Myiasis/*prevention & control ; North America ; Pest Control, Biological/*methods ; Reproduction ; Screw Worm Infection/*prevention & control
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  • 121
    Publication Date: 1982-12-24
    Description: The ethyl ester of beta-carboline-3-carboxylic acid has a high affinity for benzodiazepine receptors in the brain. In the rhesus monkey this substance produces an acute behavioral syndrome characterized by dramatic elevations in heart rate, blood pressure, plasma cortisol, and catecholamines. The effects are blocked by benzodiazepines and the specific benzodiazepine receptor antagonist Ro 15-1788. The benzodiazepine receptor may consist of several subsites or functional domains that independently recognize agonist, antagonists, or "active" antagonists such as beta-carboline-3-carboxylic acid ethyl ester. These results suggest that the benzodiazepine receptor is involved in both the affective and physiological manifestations of anxiety, and that the administration of beta-carboxylic acid ethyl ester to monkeys may provide a reliable and reproducible animal model of human anxiety.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Ninan, P T -- Insel, T M -- Cohen, R M -- Cook, J M -- Skolnick, P -- Paul, S M -- New York, N.Y. -- Science. 1982 Dec 24;218(4579):1332-4.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6293059" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Anxiety/*etiology ; Benzodiazepinones ; Blood Pressure/drug effects ; Carbolines/pharmacology ; *Disease Models, Animal ; Epinephrine/pharmacology ; Flumazenil ; Heart Rate/*drug effects ; Humans ; Hydrocortisone/blood ; Macaca mulatta ; Male ; Norepinephrine/pharmacology ; Receptors, Drug/*physiology ; Receptors, GABA-A
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  • 122
    Publication Date: 1982-01-01
    Description: Administration of the hepatic carcinogen aflatoxin B1 to experimental animals results in covalent binding to liver mitochondrial DNA at concentrations three to four times higher than nuclear DNA. The concentration of carcinogen adducts in mitochondrial DNA remains unchanged even after 24 hours, possible because of lack of excision repair. Similarly, mitochondrial transcription and translation remain inhibited up to 24 hours suggesting long-term effects of aflatoxin B1 on the mitochondrial genetic system.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Niranjan, B G -- Bhat, N K -- Avadhani, N G -- CA-22762/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1982 Jan 1;215(4528):73-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6797067" target="_blank"〉PubMed〈/a〉
    Keywords: Aflatoxin B1 ; Aflatoxins/*metabolism ; Animals ; DNA, Mitochondrial/*metabolism ; Kinetics ; Liver Neoplasms/*chemically induced/metabolism ; Male ; Mitochondria, Liver/*metabolism ; Neoplasms, Experimental/chemically induced ; Protein Biosynthesis/drug effects ; Rats ; Transcription, Genetic/drug effects
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  • 123
    Publication Date: 1982-10-22
    Description: Estrogen pellets were placed in either the right or left hypothalamus of newborn female rats so that only one side of this brain area was exposed to the postnatal masculinizing and defeminizing effects of the hormone. The effects of estrogen on gonadotropin secretion and reproductive behavior depended on both the region and the side of implantation. Exposure of the left hypothalamus to estrogen resulted in defeminized development. Exposure of the right hypothalamus to estrogen resulted in masculinized development. Thus the response of the developing hypothalamus to gonadal steroids may be asymmetric.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Nordeen, E J -- Yahr, P -- New York, N.Y. -- Science. 1982 Oct 22;218(4570):391-4.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7123240" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Estradiol/*pharmacology ; Female ; *Functional Laterality ; Hypothalamus/*physiology ; Male ; Ovary/growth & development ; Rats ; *Sex Differentiation/drug effects ; Sexual Behavior, Animal/physiology
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  • 124
    Publication Date: 1982-07-16
    Description: The ability of antiserum against murine L1210 leukemia to remove residual leukemia cells from murine bone marrow was investigated. Leukemic marrow was treated in vitro with antiserum and complement and used to hematologically reconstitute mice that had been irradiated with doses lethal to bone marrow. Following infusion of treated leukemic marrow, normal marrow returned without evidence of leukemia. More than 90 percent of the animals have survived for 11 months without untoward effects, suggesting that the technique may be of use in the treatment of acute leukemia in humans.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Trigg, M E -- Poplack, D G -- New York, N.Y. -- Science. 1982 Jul 16;217(4556):259-61.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7046048" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Antibodies ; *Bone Marrow Transplantation ; Cell Survival ; *Complement System Proteins ; Cytotoxicity, Immunologic ; Female ; Leukemia L1210/*immunology/therapy ; Male ; Mice ; Mice, Inbred DBA
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  • 125
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    Unknown
    American Association for the Advancement of Science (AAAS)
    Publication Date: 1982-12-10
    Description: Breast-feeding is important to infant nutrition, morbidity, and mortality, and to postpartum amenorrhea (hence to birth intervals). Evidence on breast-feeding patterns in low-income countries from nationally representative World Fertility Surveys and secondary sources shows that in all but a few such countries most children are breast-fed for at least a few months. The limited evidence available on trends seems to indicate a decline in the duration of breast-feeding, but in most of Asia and Africa breast-feeding is almost universal during at least the first 6 months. Earlier weaning is common in Latin America.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Popkin, B M -- Bilsborrow, R E -- Akin, J S -- New York, N.Y. -- Science. 1982 Dec 10;218(4577):1088-93.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7146896" target="_blank"〉PubMed〈/a〉
    Keywords: Africa ; Asia ; *Breast Feeding ; *Developing Countries ; Female ; Humans ; Rural Population ; South America ; Time Factors ; Urban Population
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  • 126
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    Unknown
    American Association for the Advancement of Science (AAAS)
    Publication Date: 1982-07-23
    Description: The sexual behavior of rhesus monkeys in 15 male-female pairings was observed in both a large and a small area during the follicular and luteal phases of the female's cycle. Males ejaculated in all tests at the follicular phase of the female's cycle and in 53 percent of tests at the luteal phase. However, a significant decline in ejaculation during tests at the luteal phase occurred in the large, but not in the small area. Thus the degree to which the pair's sexual behavior was influenced by the female's hormonal state depended on the spatial conditions of the test.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Wallen, K -- MH35835/MH/NIMH NIH HHS/ -- RR-00165/RR/NCRR NIH HHS/ -- New York, N.Y. -- Science. 1982 Jul 23;217(4557):375-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7201164" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Copulation ; Ejaculation ; *Estrus ; Female ; Macaca/*physiology ; Macaca mulatta/*physiology ; Male ; Pregnancy ; Proestrus ; Sexual Behavior, Animal/*physiology ; Social Behavior ; *Spatial Behavior
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  • 127
    Publication Date: 1982-07-09
    Description: Flehmen-like responses (urine tests) are one of the characteristic behavioral reactions of male Asian elephants (Elephants maximus) to cow elephants in estrus. Components of the urine of estrous cow elephants were extracted with organic solvents and partially purified by chromatography and shown to evoke Flehmen-like responses when they were presented to adult bulls.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Rasmussen, L E -- Schmidt, M J -- Henneous, R -- Groves, D -- Daves, G D Jr -- New York, N.Y. -- Science. 1982 Jul 9;217(4555):159-62.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7089549" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Elephants/anatomy & histology/*physiology ; Estrus Detection ; Female ; Male ; Pheromones/*urine ; Sex Attractants/isolation & purification/*urine ; *Sexual Behavior, Animal
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  • 128
    Publication Date: 1982-11-26
    Description: The timing of two event-related potential components was differentially affected by two experimental variables. The earlier component (NA) was affected by degradation of the stimuli and the later component (N2) by the nature of a classification task. The results support the hypothesis that NA and N2 reflect sequential stages of information processing, namely, pattern recognition and stimulus classification.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Ritter, W -- Simson, R -- Vaughan, H G Jr -- Macht, M -- HD 10804/HD/NICHD NIH HHS/ -- IF32 AGO-5193/AG/NIA NIH HHS/ -- MH 06723/MH/NIMH NIH HHS/ -- etc. -- New York, N.Y. -- Science. 1982 Nov 26;218(4575):909-11.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7134983" target="_blank"〉PubMed〈/a〉
    Keywords: Action Potentials ; Adult ; Brain/*physiology ; Brain Mapping ; Cognition/*physiology ; Discrimination (Psychology)/physiology ; Evoked Potentials ; Humans ; Information Theory ; Perception/*physiology ; Time Factors
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  • 129
    Publication Date: 1982-10-22
    Description: Intravenous administration of rabbit antiserum to ovine corticotropin-releasing factor (CRF) markedly reduced the CRF-induced rise of plasma adrenocorticotropic hormone (ACTH) in intact nonstressed adult male rats while blocking more than 75 percent of the ACTH release observed in rats exposed to ether stress. Furthermore, antiserum to CRF significantly lowered ACTH levels in adrenalectomized animals. These results suggest that endogenous CRF plays a physiological role in regulating ACTH secretion.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Rivier, C -- Rivier, J -- Vale, W -- AM18811/AM/NIADDK NIH HHS/ -- AM20917/AM/NIADDK NIH HHS/ -- AM26741/AM/NIADDK NIH HHS/ -- etc. -- New York, N.Y. -- Science. 1982 Oct 22;218(4570):377-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6289439" target="_blank"〉PubMed〈/a〉
    Keywords: Adrenalectomy ; Adrenocorticotropic Hormone/blood/*secretion ; Animals ; Antibodies ; Antigen-Antibody Complex ; Corticotropin-Releasing Hormone/*immunology ; Male ; Rats ; Secretory Rate/drug effects
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  • 130
    Publication Date: 1982-12-24
    Description: Spectral analysis of spontaneous fluctuations in human fetal movement revealed strong oscillations at frequencies between 0.24 and 0.90 cycle per minute, which are much higher than those of the cyclic alternation of quiet and active states in the fetus and neonate. Oscillations at frequencies up to 2.88 cycles per minute were also detected, but they were usually much weaker. The prominent peaks in the fetal movement spectra are in the frequency range of recently reported neonatal motor rhythms, and indicate the existence of a cyclic process controlling spontaneous motor output that oscillates near one cycle per minute and begins to function in utero.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Robertson, S S -- Dierker, L J -- Sorokin, Y -- Rosen, M G -- M01RR00210/RR/NCRR NIH HHS/ -- P50HD11089/HD/NICHD NIH HHS/ -- New York, N.Y. -- Science. 1982 Dec 24;218(4579):1327-30.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7146916" target="_blank"〉PubMed〈/a〉
    Keywords: Female ; Fetus/*physiology ; Humans ; *Movement ; Pregnancy ; Pregnancy Trimester, Third ; Spectrum Analysis/methods ; Time Factors
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  • 131
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    Unknown
    American Association for the Advancement of Science (AAAS)
    Publication Date: 1982-09-03
    Description: Increases with aging in subperiosteal dimensions and second moments of area (measures of bending and torsional rigidity) in femoral and tibial cross sections are documented in an archeological sample from the American Southwest. Significant differences between cross-sectional sites and between sexes in the pattern of cortical remodeling with age are also present. These differences appear to be related to variations in the stress or strain levels in different regions of the femur and tibia which result from in vivo mechanical loadings of the lower limb.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Ruff, C B -- Hayes, W C -- AM00749/AM/NIADDK NIH HHS/ -- AM26740/AM/NIADDK NIH HHS/ -- New York, N.Y. -- Science. 1982 Sep 3;217(4563):945-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7112107" target="_blank"〉PubMed〈/a〉
    Keywords: Adult ; *Aging ; Bone Development ; Female ; Femur/*physiology ; Fractures, Bone/etiology ; Growth ; Humans ; Male ; Middle Aged ; Periosteum/*physiology ; Physical Exertion ; Sex Characteristics ; Stress, Mechanical ; Tibia/*physiology
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  • 132
    Publication Date: 1982-10-22
    Description: Gonadotropic activation of the adult rat testis in vitro and in vivo is followed by down-regulation of luteinizing hormone receptors and decreased androgen responses to subsequent hormonal stimulation. In contrast, treatment of cultured fetal testes with gonadotropins and dibutyryl adenosine 3',5'-monophosphate enhanced steroidogenic responsiveness and did not cause the luteinizing hormone-receptor loss and desensitization that is characteristic of the adult gonad. The analysis of gonadotropin receptors and action in cultured fetal testis cells facilitates developmental studies of gonadal function, and has revealed significant differences in the responses of fetal and adult Leydig cells to gonadotropic regulation.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Warren, D W -- Dufau, M L -- Catt, K J -- 1F33-HD06192/HD/NICHD NIH HHS/ -- New York, N.Y. -- Science. 1982 Oct 22;218(4570):375-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6289438" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Bucladesine/pharmacology ; Cell Differentiation/drug effects ; Cells, Cultured ; Chorionic Gonadotropin/pharmacology ; Hydroxyprogesterones/biosynthesis ; Leydig Cells/*drug effects ; Luteinizing Hormone/pharmacology ; Male ; Progesterone/biosynthesis ; Rats ; Receptors, Cell Surface/*drug effects/metabolism ; Receptors, LH ; Testis/*embryology/metabolism ; Testosterone/biosynthesis
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  • 133
    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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  • 134
    Publication Date: 1982-07-30
    Description: Mice infected with Trypanosoma rhodesiense were treatment concurrently with cis-diamminedichloroplatinum (II) (DDP), disulfiram, and hydration. Most of the mice (92.5 percent) were cured; inoculation of blood or suspensions of brain or heart from these animals did not produce disease in recipient mice. The dose of DDP needed to eliminate the trypanosomes, 3 milligrams per kilogram of body weight per day for 7 days, was lethally toxic unless the animals received disulfiram orally and subcutaneous injections of physiologic saline, which reduced the acute renal necrosis caused by DDP alone. Some mild to moderate reversible renal damage was noted upon pathologic examination of the treated mice.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Wysor, M S -- Zwelling, L A -- Sanders, J E -- Grenan, M M -- New York, N.Y. -- Science. 1982 Jul 30;217(4558):454-6.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7201165" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cisplatin/adverse effects ; Disulfiram/*administration & dosage ; Kidney/pathology ; Male ; Mice ; Mice, Inbred ICR ; Necrosis/chemically induced ; Rats ; Sodium Chloride/administration & dosage ; Trypanosoma/drug effects ; Trypanosomiasis, African/pathology/*therapy
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  • 135
    Publication Date: 1982-01-08
    Description: Prompt and long-term closure of full-thickness skin wounds is guinea pigs and humans is achieved by applying a bilayer polymeric membrane. The membrane comprises a top layer of a silicone elastomer and a bottom layer of a porous cross-linked network of collagen and glycosaminoglycan. The bottom layer can be seeded with a small number of autologous basal cells before grafting. No immunosuppression is used and infection, exudation, and rejection are absent. Host tissue utilizes the sterile membrane as a culture medium to synthesize neoepidermal and neodermal tissue. A functional extension of skin over the entire wound area is formed in about 4 weeks.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Yannas, I V -- Burke, J F -- Orgill, D P -- Skrabut, E M -- GM 21700/GM/NIGMS NIH HHS/ -- GM 23946/GM/NIGMS NIH HHS/ -- HL 14322/HL/NHLBI NIH HHS/ -- New York, N.Y. -- Science. 1982 Jan 8;215(4529):174-6.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7031899" target="_blank"〉PubMed〈/a〉
    Keywords: Adolescent ; Adult ; Animals ; Burns/*therapy ; Cells, Cultured ; Child ; Child, Preschool ; Collagen/therapeutic use ; Female ; Glycosaminoglycans/therapeutic use ; Guinea Pigs ; Humans ; Male ; Middle Aged ; Silicone Elastomers/therapeutic use ; *Skin Transplantation ; *Wound Healing
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  • 136
    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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  • 137
    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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  • 138
    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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  • 139
    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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  • 140
    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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  • 141
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1983-12-23
    Description: Three-month-old infants learned to activate an overhead crib mobile by operant footkicking and received a visual reminder of the event (a "reactivation treatment") 2 weeks later, after forgetting had occurred. Subsequent manifestation of the association was a monotonic increasing function of time since the reactivation treatment, and performance of infants tested 8 hours after the remainder was related to the time spent sleeping in the interim (r = 0.75). These data demonstrate that normal retrieval is time-dependent. Moreover, individual data suggest that retrieval may be continuous rather than discontinuous.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Fagen, J W -- Rovee-Collier, C -- MH 32307/MH/NIMH NIH HHS/ -- New York, N.Y. -- Science. 1983 Dec 23;222(4630):1349-51.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6658456" target="_blank"〉PubMed〈/a〉
    Keywords: Humans ; Infant ; *Memory ; Time Factors
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  • 142
    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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  • 143
    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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  • 144
    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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  • 145
    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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  • 146
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    American Association for the Advancement of Science (AAAS)
    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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  • 147
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    Unknown
    American Association for the Advancement of Science (AAAS)
    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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  • 148
    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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  • 149
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    American Association for the Advancement of Science (AAAS)
    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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  • 150
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    Unknown
    American Association for the Advancement of Science (AAAS)
    Publication Date: 1983-09-09
    Description: Consistency of hand preference was examined in a longitudinal study of children between 18 and 42 months of age. Results showed a sex-specific relationship between hand consistency and intellectual development. Across a variety of intellectual abilities at all ages, females with consistency of handedness were precocious compared to females without such consistency. This relationship did not hold for males.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Gottfried, A W -- Bathurst, K -- New York, N.Y. -- Science. 1983 Sep 9;221(4615):1074-6.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6879205" target="_blank"〉PubMed〈/a〉
    Keywords: Child, Preschool ; Female ; *Functional Laterality ; Humans ; Infant ; *Intelligence ; Intelligence Tests ; Male ; Sex Factors ; Time Factors
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  • 151
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1983-10-14
    Description: In vitro fertilization, in its first 5 years of use, has met minimum standards for efficacy and safety, as judged by published clinical reports. It is becoming more widely available as an approach for overcoming sterility in married couples and appears also to be gaining social acceptance in that context. Several technical options presented by the procedure, particularly storage of frozen embryos and embryo transfers involving third-party contributions, are less fully evaluated clinically and raise social, ethical, and legal questions that go beyond the original medical model for therapeutic intervention. The clinical success of in vitro fertilization and the options it affords call for careful policy consideration. Estimates of costs and of potential demand for and supply of services are provided and the current status of relevant policy in the United States and abroad is discussed.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Grobstein, C -- Flower, M -- Mendeloff, J -- New York, N.Y. -- Science. 1983 Oct 14;222(4620):127-33.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6623063" target="_blank"〉PubMed〈/a〉
    Keywords: Advisory Committees ; Costs and Cost Analysis ; Embryo Transfer ; Ethical Review ; Ethics ; Fallopian Tube Diseases/therapy ; Federal Government ; Female ; Fertilization in Vitro/*methods ; Humans ; Infertility, Female/therapy ; Infertility, Male/therapy ; Legislation, Medical ; Male ; Obstetrics/economics/standards ; Oocyte Donation ; Pregnancy ; Resource Allocation ; *Risk Assessment ; during its first five years. Efficacy, safety, costs, demand and supply, and ; feasible extensions of the basic procedure are discussed. The authors contend ; that, while Australia and Great Britain have made progress toward formulating ; public policy on IVF, efforts in the United States have not gone beyond a 1979 ; report and recommendations issued by the Department of Health, Education, and ; Welfare's Ethics Advisory Board. Given the ready clinical and public acceptance ; of IVF, there is need for an oversight mechanism at the federal level, perhaps ; via a forum concerned also with the overlapping area of human genetic ; intervention.
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  • 152
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    American Association for the Advancement of Science (AAAS)
    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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  • 153
    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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  • 154
    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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  • 155
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1983-09-09
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Holden, C -- New York, N.Y. -- Science. 1983 Sep 9;221(4615):1034.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6879202" target="_blank"〉PubMed〈/a〉
    Keywords: Female ; Humans ; *Life Expectancy ; Male ; *Sex Factors ; *Smoking
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  • 156
    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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  • 157
    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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  • 158
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1983-05-06
    Description: Crystalline cholesterol undergoes a phase transition a few degrees below human body temperature. The high-temperature form has an unusually complex structure with 16 independent molecules. In the transition two molecules change side chain conformation, four reorient about their long axes, and ten remain unchanged. The transition mechanism implies relatively nonspecific intermolecular interactions, qualitatively consistent with the behavior of cholesterol in biomembranes. The transition preserves a remarkably closely obeyed pseudosymmetry present in the structure.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hsu, L Y -- Nordman, C E -- GM15259/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1983 May 6;220(4597):604-6.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6836303" target="_blank"〉PubMed〈/a〉
    Keywords: Body Temperature ; Chemical Phenomena ; Chemistry ; *Cholesterol ; Crystallization ; Humans ; Magnetic Resonance Spectroscopy ; Molecular Conformation
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  • 159
    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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  • 160
    Publication Date: 1983-04-01
    Description: The tissue culture condition that is required for the type of chromosome breakage seen at most fragile sites, namely, the absence of folic acid and thymidine in the medium, greatly enhanced micronucleus formation in proliferating lymphocyte cultures from normal individuals. This suggests that chromosome breakage at fragile sites and the apparently spontaneous damage that gives rise to micronuclei are controlled by the same mechanism.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Jacky, P B -- Beek, B -- Sutherland, G R -- New York, N.Y. -- Science. 1983 Apr 1;220(4592):69-70.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6828880" target="_blank"〉PubMed〈/a〉
    Keywords: Adolescent ; Adult ; Cell Nucleus/drug effects/ultrastructure ; Cells, Cultured ; Child ; *Chromosome Aberrations ; Chromosome Fragile Sites ; *Chromosome Fragility ; Culture Media ; Dose-Response Relationship, Drug ; Female ; Folic Acid/pharmacology ; Humans ; Lymphocytes/ultrastructure ; Male ; Middle Aged ; Thymidine/pharmacology
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  • 161
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1983-12-23
    Description: Treatment of nonpolar ether extracts of human female blood with mild alkali produced more immunoassayable estradiol than the unhydrolyzed extract. Analysis of the serum extracts showed that the substance which released immunoreactive estradiol after hydrolysis has chromatographic properties identical to those of fatty acid esters of estradiol esterified at carbon 17. The physiological role of these previously unknown endogenous esters might be inferred from their structural similarity to synthetic drugs used therapeutically for their prolonged estrogenic action.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Janocko, L -- Hochberg, R B -- CA29591/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1983 Dec 23;222(4630):1334-6.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6419346" target="_blank"〉PubMed〈/a〉
    Keywords: Chromatography, High Pressure Liquid ; Esters ; Estradiol/*analogs & derivatives/blood ; Fatty Acids ; Female ; Humans ; Hydrogen-Ion Concentration ; Hydrolysis ; Male ; Menotropins/pharmacology ; Menstruation ; Radioimmunoassay
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  • 162
    Publication Date: 1983-12-09
    Description: Three cell lines were derived from a homosexual patient with probable acquired immunodeficiency syndrome and Burkitt's lymphoma. The cell lines produce an unusual strain of Epstein-Barr virus which will both transform cord blood lymphocytes and induce early antigens in Raji cells. Translocations between chromosomes 8 and 22 have occurred in all three lines, but the cells synthesize immunoglobulin M with light chains of the kappa type, in contrast to the usual concordance between a translocation involving chromosome 22 and lambda chain synthesis. Both kappa genes and one lambda gene are rearranged. These findings indicate either that translocation may occur as a separate event from immunoglobulin gene rearrangement or that the proposed hierarchical sequence of immunoglobulin gene rearrangements is not always adhered to. The data also imply that in cells containing a translocation between the long arm of chromosome 8 and a chromosome bearing an immunoglobulin gene, alteration of cellular myc expression may occur regardless of the immunoglobulin gene that is expressed.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Magrath, I -- Erikson, J -- Whang-Peng, J -- Sieverts, H -- Armstrong, G -- Benjamin, D -- Triche, T -- Alabaster, O -- Croce, C M -- New York, N.Y. -- Science. 1983 Dec 9;222(4628):1094-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6316501" target="_blank"〉PubMed〈/a〉
    Keywords: Acquired Immunodeficiency Syndrome/complications ; Antigens, Viral/analysis ; Burkitt Lymphoma/complications/*genetics ; Cell Line ; Chromosomes, Human, 21-22 and Y ; Chromosomes, Human, 6-12 and X ; Epstein-Barr Virus Nuclear Antigens ; Herpesvirus 4, Human/analysis ; Homosexuality ; Humans ; Immunoglobulin Light Chains/*biosynthesis ; Immunoglobulin kappa-Chains/*biosynthesis ; Male ; Oncogenes
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  • 163
    Publication Date: 1983-03-18
    Description: Prelinguistic infants recognized structural correspondences in acoustic and optic properties of synchronized, naturally spoken disyllables, but did so only when they were looking to their right sides. This result suggests that intermodal speech perception is facilitated by rightward orientation of attention and subserved by the left hemisphere.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉MacKain, K -- Studdert-Kennedy, M -- Spieker, S -- Stern, D -- HD-01944/HD/NICHD NIH HHS/ -- HD-05407/HD/NICHD NIH HHS/ -- New York, N.Y. -- Science. 1983 Mar 18;219(4590):1347-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6828865" target="_blank"〉PubMed〈/a〉
    Keywords: Attention/physiology ; Brain/*physiology ; Female ; Functional Laterality ; Humans ; Infant ; Male ; Speech Perception/*physiology
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  • 164
    Publication Date: 1983-12-02
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Marx, J L -- New York, N.Y. -- Science. 1983 Dec 2;222(4627):998-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6648521" target="_blank"〉PubMed〈/a〉
    Keywords: Acquired Immunodeficiency Syndrome/*epidemiology/transmission ; Africa, Central ; Blood ; Europe ; Female ; Haiti ; Homosexuality ; Humans ; Male ; Sarcoma, Kaposi/epidemiology ; United States
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  • 165
    Publication Date: 1983-01-28
    Description: The benzodiazepine receptor antagonist 3-hydroxymethyl-beta-carboline, which blocks several of the pharmacological actions of benzodiazepines, induces a dose-dependent increase in sleep latency in the rat. Furthermore, at a low dose that by itself does not affect sleep, 3-hydroxymethyl-beta-carboline blocks sleep induction by a large dose of flurazepam. The benzodiazepine receptor may play a role in both the physiological regulation and pharmacological induction of sleep.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Mendelson, W B -- Cain, M -- Cook, J M -- Paul, S M -- Skolnick, P -- New York, N.Y. -- Science. 1983 Jan 28;219(4583):414-6.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6294835" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Carbolines/*pharmacology ; Flurazepam/*antagonists & inhibitors ; Indoles/*pharmacology ; Male ; Rats ; Receptors, Cell Surface/*drug effects ; Receptors, GABA-A ; Sleep/*drug effects ; Wakefulness/drug effects
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  • 166
    Publication Date: 1983-08-26
    Description: A substitution of alanine for valine at position 126 in the beta-chain of hemoglobin was discovered in a hematologically normal adult male of Lebanese extraction. The variant beta-globin was initially observed and subsequently purified by reverse-phase high-performance liquid chromatography (HPLC). Reverse-phase HPLC was also used to isolate the variant tryptic peptide of beta-T13 that has alanine replacing valine at residue 126. The discovery of hemoglobin Beirut illustrates the usefulness of reverse-phase HPLC for the detection of neutral amino acid substitutions in proteins. The ability to detect neutral substitutions in undigested proteins is pertinent to the monitoring of genetic variation in human populations.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Strahler, J R -- Rosenbloom, B B -- Hanash, S M -- R01-HL25541/HL/NHLBI NIH HHS/ -- New York, N.Y. -- Science. 1983 Aug 26;221(4613):860-2.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6879181" target="_blank"〉PubMed〈/a〉
    Keywords: Adult ; Chromatography, High Pressure Liquid ; Hemoglobins, Abnormal/genetics/*isolation & purification ; Humans ; Isoelectric Point ; Macromolecular Substances ; Male
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  • 167
    Publication Date: 1983-11-25
    Description: Intracisternal injection of ovine corticotropin-releasing factor (CRF) into the pylorus-ligated rat or the rat with gastric fistula resulted in a dose-dependent inhibition of gastric secretion stimulated with pentagastrin or thyrotropin-releasing hormone. When injected into the lateral hypothalamus--but not when injected into the cerebral cortex--CRF suppressed pentagastrin-stimulated acid secretion. The inhibitory effect of CRF was blocked by vagotomy and adrenalectomy but not by hypophysectomy or naloxone treatment. These results indicate that CRF acts within the brain to inhibit gastric acid secretion through vagal and adrenal mechanisms and not through hypophysiotropic effects.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Tache, Y -- Goto, Y -- Gunion, M W -- Vale, W -- River, J -- Brown, M -- AM30110/AM/NIADDK NIH HHS/ -- New York, N.Y. -- Science. 1983 Nov 25;222(4626):935-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6415815" target="_blank"〉PubMed〈/a〉
    Keywords: Adrenalectomy ; Animals ; Brain/*drug effects ; Cerebral Cortex/drug effects ; Corticotropin-Releasing Hormone/administration & dosage/*pharmacology ; Dose-Response Relationship, Drug ; Gastric Acid/*secretion ; Hypophysectomy ; Hypothalamus/drug effects ; Male ; Pentagastrin/antagonists & inhibitors ; Rats ; Rats, Inbred Strains ; Thyrotropin-Releasing Hormone/antagonists & inhibitors ; Vagotomy
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  • 168
    Publication Date: 1983-04-01
    Description: Intracerebroventricular administration of ILA's, a preparation enriched in insulin-like growth factors, caused a marked decrease in growth hormone secretory episodes and in body weight associated with reduced food intake over 24 hours. Central injection of insulin and bovine serum albumin had no such effects. These findings suggest that insulin-like growth factors play a role in growth hormone negative feedback and body weight regulation at the level of the central nervous system.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Tannenbaum, G S -- Guyda, H J -- Posner, B I -- New York, N.Y. -- Science. 1983 Apr 1;220(4592):77-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6338593" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Body Weight/*drug effects ; Brain/drug effects/*physiology ; Eating/drug effects ; Growth Hormone/antagonists & inhibitors/blood/*physiology ; Insulin/blood/*pharmacology ; Male ; Peptides/*pharmacology ; Rats ; Rats, Inbred Strains ; Somatomedins/*pharmacology
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  • 169
    Publication Date: 1983-06-10
    Description: The metastasis of B16 melanoma cells differed significantly in obese (ob/ob) and lean (+/?) female mice of strain C57BL/6J. When the mice were inoculated subcutaneously with melanoma cells at 10 to 11 months of age, the primary tumor grew more slowly in obese than in lean littermates and the frequency of lung metastasis was greatly reduced. When the mice were injected with the cells at 4 to 7 months, the primary tumor grew at the same rate in obese and lean mice, but the obese mice again showed a significantly reduced frequency of lung metastasis. That this effect was related to an enhanced immunocompetence in obese mice was supported by the finding that splenic lymphocytes of ob/ob mice showed three times the proliferative response to the T-cell mitogen concanavalin A compared with the proliferative response of lean control mice. The ob/ob mouse may provide a model for the study of enhanced immunocompetence in obese individuals.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Thompson, C I -- Kreider, J W -- Black, P L -- Schmidt, T J -- Margules, D L -- New York, N.Y. -- Science. 1983 Jun 10;220(4602):1183-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6602379" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Female ; Immunity, Innate ; Lung Neoplasms/immunology ; Male ; Melanoma/*immunology ; Mice ; Mice, Inbred C57BL ; *Mice, Obese ; Neoplasm Metastasis ; Neoplasm Transplantation ; Neoplasms, Experimental/immunology ; Rats ; Receptors, Glucocorticoid/physiology ; T-Lymphocytes/*physiology
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  • 170
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1983-01-14
    Description: By means of visual stimnulus without temporal or spatial edges, we have achieved better isolation of chromatic signals at detection threshold than has been reported previously. Under various states of adaptation, the spectral sensitivity of the chromatic mechanism detecting middle- and long-wavelength lights corresponds with that deduced from suprathreshold red/green hue equilibriums.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Thornton, J E -- Pugh, E N Jr -- New York, N.Y. -- Science. 1983 Jan 14;219(4581):191-3.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6849131" target="_blank"〉PubMed〈/a〉
    Keywords: Color Perception/*physiology ; Humans ; Spectrum Analysis ; Time Factors
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  • 171
    Publication Date: 1983-11-11
    Description: Endothelial cells from human blood vessels were cultured in vitro, with doubling times of 17 to 21 hours for 42 to 79 population doublings. Cloned human endothelial cell strains were established for the first time and had similar proliferative capacities. This vigorous cell growth was achieved by addition of heparin to culture medium containing reduced concentrations of endothelial cell growth factor. The routine cloning and long-term culture of human endothelial cells will facilitate studying the human endothelium in vitro.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Thornton, S C -- Mueller, S N -- Levine, E M -- AG-00839/AG/NIA NIH HHS/ -- T32-CA-09171/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1983 Nov 11;222(4624):623-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6635659" target="_blank"〉PubMed〈/a〉
    Keywords: Cell Division/drug effects ; Cells, Cultured ; Clone Cells/enzymology ; Endothelium/*cytology ; Growth Substances/pharmacology ; Heparin/*pharmacology ; Humans ; Time Factors
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  • 172
    Publication Date: 1983-08-19
    Description: After median nerve fibers to glabrous skin on the hands of monkeys were crushed and allowed to regenerate, normal topographical organization was recovered in the representation of the hand in primary somatosensory cortex. Similar recovery of normal cortical organization may underlie the sensory restoration that usually follows nerve crush injury in humans.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Wall, J T -- Felleman, D J -- Kaas, J H -- New York, N.Y. -- Science. 1983 Aug 19;221(4612):771-3.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6879175" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Aotus trivirgatus/physiology ; Brain Mapping ; Hand/innervation ; *Nerve Crush ; *Nerve Regeneration ; Somatosensory Cortex/*physiology ; Time Factors
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  • 173
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1983-08-05
    Description: Administration of dexamethasone significantly enhanced the pituitary growth hormone response to growth hormone-releasing factor in intact as well as adrenalectomized rats. Thus the inhibitory effects of glucocorticosteroids on somatic growth which involve an interaction of these steroids and growth hormone at a peripheral level may also involve a modification of pathways within the central nervous system that regulate normal growth hormone secretion.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Wehrenberg, W B -- Baird, A -- Ling, N -- AM-18811/AM/NIADDK NIH HHS/ -- HD 09690/HD/NICHD NIH HHS/ -- New York, N.Y. -- Science. 1983 Aug 5;221(4610):556-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6408735" target="_blank"〉PubMed〈/a〉
    Keywords: Adrenalectomy ; Animals ; Dexamethasone/pharmacology ; Drug Interactions ; Glucocorticoids/*pharmacology ; Growth Hormone/blood/secretion ; Growth Hormone-Releasing Hormone/*pharmacology ; Male ; Rats ; Rats, Inbred Strains
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  • 174
    Publication Date: 1983-07-29
    Description: Subjects treated with low or high doses of ethanol demonstrated impaired memory, particularly in tests involving the recall of poorly learned information. Zimelidine, an inhibitor of serotonin reuptake, reversed this ethanol-induced impairment. The serotonin neurotransmitter system may mediate learning and memory in humans and may determine some of the effects of alcohol on higher mental functions.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Weingartner, H -- Rudorfer, M V -- Buchsbaum, M S -- Linnoila, M -- New York, N.Y. -- Science. 1983 Jul 29;221(4609):472-4.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6223371" target="_blank"〉PubMed〈/a〉
    Keywords: Adult ; Brompheniramine/analogs & derivatives/pharmacology ; Ethanol/*adverse effects ; Humans ; Learning/drug effects ; Male ; Memory/drug effects ; Memory Disorders/*chemically induced ; Mental Recall/drug effects ; Serotonin/*physiology ; Serotonin Antagonists/pharmacology ; Zimeldine
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  • 175
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1983-06-03
    Description: When normal diploid fibroblasts from mice, hamsters, and humans were grown in culture, the 5-methylcytosine content of their DNA's markedly decreased. The greatest rate of loss of 5-methylcytosine residues was observed in mouse cells, which survived the least number of division. Immortal mouse cell lines had more stable rates of methylation.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Wilson, V L -- Jones, P A -- 1-T32-CA09320/CA/NCI NIH HHS/ -- R01-GM30892/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1983 Jun 3;220(4601):1055-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6844925" target="_blank"〉PubMed〈/a〉
    Keywords: 5-Methylcytosine ; *Aging ; Animals ; Cell Division ; Cell Line ; Cricetinae ; Cytosine/analogs & derivatives/metabolism ; DNA/metabolism/*physiology ; Fibroblasts/metabolism ; Humans ; Mesocricetus ; Methylation ; Mice ; Time Factors
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  • 176
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1984-08-17
    Description: The Interdisciplinary Panel on Carcinogenicity reviewed and reevaluated criteria for assessing evidence of carcinogenicity of chemical substances. The panel reviewed criteria applicable to data derived from human epidemiological studies and from both in vivo and in vitro laboratory studies. A critical appraisal of all these sources of information led to the conclusion that the characterization of human risk always requires interdisciplinary evaluation of the entire array of data on a case-by-case basis. Animal studies, whenever possible, should be augmented by studies of mechanisms, metabolism, and pharmacodynamics. Such studies may assist in assessing risk to man. Recognizing the utility of such data should point the way for better assessment in the future.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉New York, N.Y. -- Science. 1984 Aug 17;225(4663):682-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6463646" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Biological Assay ; *Carcinogens/metabolism/pharmacology ; Carcinogens, Environmental ; Cell Transformation, Neoplastic ; Dose-Response Relationship, Drug ; Environmental Exposure ; Epidemiologic Methods ; Humans ; In Vitro Techniques ; Mixed Function Oxygenases/metabolism ; Mutagenicity Tests ; Neoplasms/chemically induced ; Risk ; Time Factors ; United States
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  • 177
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1984-05-18
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉New York, N.Y. -- Science. 1984 May 18;224(4650):658,660,662 passim.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6719107" target="_blank"〉PubMed〈/a〉
    Keywords: Carcinogens/pharmacology ; Diet/*adverse effects ; Female ; Humans ; Male ; Neoplasms/*etiology
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  • 178
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1984-10-26
    Description: Mutations in the Caenorhabditis elegans genes lin-14, lin-28, and lin-29 cause heterochronic developmental defects: the timing of specific developmental events in several tissues is altered relative to the timing of events in other tissues. These defects result from temporal transformations in the fates of specific cells, that is, certain cells express fates normally expressed by cells generated at other developmental stages. The identification and characterization of genes that can be mutated to cause heterochrony support the proposal that heterochrony is a mechanism for phylogenetic change and suggest cellular and genetic bases for heterochronic variation.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Ambros, V -- Horvitz, H R -- GM24663/GM/NIGMS NIH HHS/ -- GM24943/GM/NIGMS NIH HHS/ -- HD00369/HD/NICHD NIH HHS/ -- etc. -- New York, N.Y. -- Science. 1984 Oct 26;226(4673):409-16.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6494891" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Caenorhabditis/*genetics ; Female ; *Genes ; Genetic Variation ; Male ; *Mutation ; *Phylogeny ; Time Factors
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  • 179
    Publication Date: 1984-03-23
    Description: Rats maintained for 12 weeks on diets moderately or more severely deficient in magnesium showed significant elevations in arterial blood pressure compared to control animals. Examination of the mesenteric microcirculation in situ revealed that dietary magnesium deficiency resulted in reduced capillary, postcapillary, and venular blood flow concomitant with reduced terminal arteriolar, precapillary sphincter, and venular lumen sizes. The greater the degree of dietary magnesium deficiency the greater the reductions in microvascular lumen sizes. These findings may provide a rationale for the etiology, as well as treatment, of some forms of hypertensive vascular disease.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Altura, B M -- Altura, B T -- Gebrewold, A -- Ising, H -- Gunther, T -- HL18015/HL/NHLBI NIH HHS/ -- HL29600/HL/NHLBI NIH HHS/ -- New York, N.Y. -- Science. 1984 Mar 23;223(4642):1315-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6701524" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Arterioles/pathology ; *Blood Pressure ; Capillaries/pathology ; Magnesium/blood ; Magnesium Deficiency/pathology/*physiopathology ; Male ; *Microcirculation ; Rats ; Rats, Inbred Strains ; *Vasoconstriction ; Venules/pathology
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  • 180
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1984-07-20
    Description: The iron-carbon monoxide stretching mode and the iron-carbon-oxygen bending mode in carbon monoxide-bound cytochrome oxidase have been assigned at 520 and 578 cm-1, respectively. The frequencies, widths, and intensities of these modes show that the Fe-C-O grouping in carbon monoxide-cytochrome a3 is linear but tilted from the normal to the heme plane; that the iron-histidine bond in both five- and six-coordinate cytochrome a3 is strained; and that the carbon monoxide and the proximal histidine each have characteristic, well-defined orientations in all molecules. These data can account for the binding affinities of carbon monoxide and dioxygen under physiological conditions.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Argade, P V -- Ching, Y C -- Rousseau, D L -- New York, N.Y. -- Science. 1984 Jul 20;225(4659):329-31.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6330890" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Carbon Monoxide/metabolism ; Cattle ; Chemical Phenomena ; Chemistry ; Electron Transport Complex IV/*metabolism ; Myoglobin/metabolism ; Oxidation-Reduction ; Oxygen/metabolism ; Spectrum Analysis, Raman
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  • 181
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1984-08-31
    Description: The growing murine melanoma B16 secretes increasing quantities of a substance or substances immunologically cross-reactive with insulin. The elevated concentrations of these substances in blood are accompanied by a decrease in blood glucose concentration and release of growth hormone, which is followed by increased tumor growth. By use of a phenomenological model based on these data, we show that B16 incites its own growth by positive feedback.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Bajzer, Z -- Pavelic, K -- Vuk-Pavlovic, S -- New York, N.Y. -- Science. 1984 Aug 31;225(4665):930-2.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6382606" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Blood Glucose/*analysis ; Growth Hormone/blood ; Insulin/blood/*secretion ; Male ; Mathematics ; Melanoma/blood/pathology/*secretion ; Mice ; Mice, Inbred C57BL ; Models, Biological
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  • 182
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1984-09-28
    Description: Recent neurophysiological findings have demonstrated that abstinent chronic alcoholics manifest deficits in event-related brain potentials. To explore possible biological antecedents of alcoholism the present study examined boys at high risk for alcoholism. Event-related brain potentials were recorded from biological sons of alcoholic fathers and matched control boys. Differences in the P3 component of the potentials were obtained between the high-risk and control subjects.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Begleiter, H -- Porjesz, B -- Bihari, B -- Kissin, B -- AA 05524/AA/NIAAA NIH HHS/ -- New York, N.Y. -- Science. 1984 Sep 28;225(4669):1493-6.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6474187" target="_blank"〉PubMed〈/a〉
    Keywords: Adolescent ; Adult ; Alcoholism/*genetics/physiopathology ; Analysis of Variance ; Brain/*physiopathology ; Child ; Evoked Potentials ; Fathers ; Humans ; Male ; Memory Disorders/etiology ; Risk
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  • 183
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1983-03-04
    Description: Amplitude modulation is a predominant temporal feature in many vocal signals. The leopard frog, Rana pipiens, has a class of neurons in the central auditory system that respond selectively to particular rates of amplitude modulation; these neurons can be characterized by a temporal tuning curve. Such selectivity is absent in the peripheral auditory system. This type of transformation may be fundamental in processing temporal information in the vertebrate sensory nervous system.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Rose, G -- Capranica, R R -- NS-09244/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 1983 Mar 4;219(4588):1087-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6600522" target="_blank"〉PubMed〈/a〉
    Keywords: Animal Communication ; Animals ; Auditory Pathways/*physiology ; Auditory Perception/*physiology ; Brain/physiology ; Rana pipiens/*physiology ; Time Factors
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  • 184
    Publication Date: 1984-01-06
    Description: Two human genes that are homologous to both the murine transforming gene (oncogene) v-raf and the chicken transforming gene v-mil have been mapped by means of human-rodent somatic cell hybrids to human chromosomes previously devoid of known oncogenes. One gene, c-raf-2, which appears to be a processed pseudogene, is located on chromosome 4. The other gene, c-raf-1, which appears to be the active gene, is located on chromosome 3 and has been regionally mapped by chromosomal in situ hybridization to 3p25. This assignment correlates with specific chromosomal abnormalities associated with certain human malignancies.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Bonner, T -- O'Brien, S J -- Nash, W G -- Rapp, U R -- Morton, C C -- Leder, P -- New York, N.Y. -- Science. 1984 Jan 6;223(4631):71-4.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6691137" target="_blank"〉PubMed〈/a〉
    Keywords: Adenocarcinoma/genetics ; Animals ; Chromosome Aberrations ; Chromosome Mapping ; *Chromosomes, Human, 1-3 ; *Chromosomes, Human, 4-5 ; Cricetinae ; Humans ; Hybrid Cells ; Kidney Neoplasms/genetics ; Lung Neoplasms/genetics ; Male ; Mice ; Nucleic Acid Hybridization ; *Oncogenes
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  • 185
    Publication Date: 1984-05-25
    Description: The magnocellular nucleus of the anterior neostriatum is a forebrain nucleus of passerine birds that accumulates testosterone and makes monosynaptic connections with other telencephalic nuclei that control song production in adult birds. Lesions in the magnocellular nucleus disrupted song development in juvenile male zebra finches but did not affect maintenance of stable song patterns by adult birds. These results represent an instance in which lesions of a discrete brain region during only a restricted phase in the development of a learned behavior cause permanent impairment. Because cells of the magnocellular nucleus accumulate androgens these findings raise the possibility that this learning is mediated by hormones.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Bottjer, S W -- Miesner, E A -- Arnold, A P -- NS18392/NS/NINDS NIH HHS/ -- NS19645/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 1984 May 25;224(4651):901-3.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6719123" target="_blank"〉PubMed〈/a〉
    Keywords: Age Factors ; Animals ; Birds/*physiology ; Male ; Telencephalon/*physiology ; *Vocalization, Animal
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  • 186
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1983-05-06
    Description: Arachidonic acid plays a central role in a biological control system where such oxygenated derivatives as prostaglandins, thromboxanes, and leukotrienes are mediators. The leukotrienes are formed by transformation of arachidonic acid into an unstable epoxide intermediate, leukotriene A4, which can be converted enzymatically by hydration to leukotriene B4, and by addition of glutathione to leukotriene C4. This last compound is metabolized to leukotrienes D4 and E4 by successive elimination of a gamma-glutamyl residue and glycine. Slow-reacting substance of anaphylaxis consists of leukotrienes C4, D4, and E4. The cysteinyl-containing leukotrienes are potent bronchoconstrictors, increase vascular permeability in postcapillary venules, and stimulate mucus secretion. Leukotriene B4 causes adhesion and chemotactic movement of leukocytes and stimulates aggregation, enzyme release, and generation of superoxide in neutrophils. Leukotrienes C4, D4, and E4, which are released from the lung tissue of asthmatic subjects exposed to specific allergens, seem to play a pathophysiological role in immediate hypersensitivity reactions. These leukotrienes, as well as leukotriene B4, have pro-inflammatory effects.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Samuelsson, B -- New York, N.Y. -- Science. 1983 May 6;220(4597):568-75.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6301011" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Arachidonic Acids/metabolism/pharmacology/physiology ; Bronchi/drug effects ; Cats ; Chemical Phenomena ; Chemistry ; Cricetinae ; Guinea Pigs ; Haplorhini ; Humans ; Hypersensitivity, Immediate/*physiopathology ; Inflammation/*physiopathology ; Leukocytes/drug effects/metabolism ; Leukotriene B4/pharmacology/*physiology ; Mice ; Microcirculation/drug effects ; Rabbits ; Rats ; SRS-A/*physiology
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  • 187
    Publication Date: 1983-06-10
    Description: The compound 2-phenylethylamine is an "endogenous amphetamine" which may modulate central adrenergic functions. 2-Phenylethylamine is mainly metabolized by monoamine oxidase to form phenyl acetate (PAA). The 24-hour urinary excretion of PAA was measured in normal healthy volunteers and depressed patients. Patients were diagnosed according to the Diagnostic and Statistical Manual of Mental Disorders, edition 3. In 70 percent of healthy volunteers of both sexes, the excretion of PAA ranged between 70 and 175 milligrams per 24 hours (mean = 141.1 +/- 10.2). Inpatients with major depressive disorder (unipolar type) (N = 31) excreted less PAA (68.7 +/- 7.0 milligrams per 24 hours) and 55 percent of them excreted less than 70 milligrams per 24 hours; there were no significant differences in the PAA excretion between untreated patients (N = 13) and those treated with antidepressants that were not effective (N = 18). The PAA excretion was reduced to a lesser extent in 35 less severely depressed unipolar outpatients (drug-free for 1 week) (86.3 +/- 11.8 milligrams per 24 hours). These results suggest that low PAA urinary excretion may be a reliable state marker for the diagnosis of some forms of unipolar major depressive disorders.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Sabelli, H C -- Fawcett, J -- Gusovsky, F -- Javaid, J -- Edwards, J -- Jeffriess, H -- New York, N.Y. -- Science. 1983 Jun 10;220(4602):1187-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6857245" target="_blank"〉PubMed〈/a〉
    Keywords: Adolescent ; Adult ; Aged ; Antidepressive Agents/pharmacology ; Depressive Disorder/*diagnosis/urine ; Female ; Humans ; Male ; Middle Aged ; Phenethylamines/metabolism/physiology ; Phenylacetates/*urine
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  • 188
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1983-04-08
    Description: Tritiated acetylcholine was used to measure binding sites with characteristics of nicotinic cholinergic receptors in rat brain. Regulation of the binding sites in vivo was examined by administering two drugs that stimulate nicotinic receptors directly or indirectly. After 10 days of exposure to the cholinesterase inhibitor diisopropyl fluorophosphate, binding of tritiated acetylcholine in the cerebral cortex was decreased. However, after repeated administration of nicotine for 10 days, binding of tritiated acetylcholine in the cortex was increased. Saturation analysis of tritiated acetylcholine binding in the cortices of rats treated with diisopropyl fluorophosphate or nicotine indicated that the number of binding sites decreased and increased, respectively, while the affinity of the sites was unaltered.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Schwartz, R D -- Kellar, K J -- 507 RR05360-20/RR/NCRR NIH HHS/ -- GM07443/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1983 Apr 8;220(4593):214-6.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6828889" target="_blank"〉PubMed〈/a〉
    Keywords: Acetylcholine/metabolism ; Animals ; Brain/*physiology ; Brain Chemistry/drug effects ; Cerebral Cortex/analysis/physiology ; Isoflurophate/pharmacology ; Male ; Nicotine/metabolism/pharmacology ; Rats ; Rats, Inbred Strains ; Receptors, Cholinergic/*physiology ; Receptors, Nicotinic/analysis/*physiology
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  • 189
    Publication Date: 1983-07-15
    Description: The structure of the messenger RNA (mRNA) encoding the precursor to mouse submaxillary epidermal growth factor (EGF) was determined from the sequence of a set of overlapping complementary DNA's (cDNA). The mRNA is unexpectedly large, about 4750 nucleotide bases, and predicts the sequence of preproEGF, a protein of 1217 amino acids (133,000 molecular weight). The EGF moiety (53 amino acids) is flanked by polypeptide segments of 976 and 188 amino acids at its amino and carboyxl termini, respectively. The amino terminal segment of the precursor contains seven peptides with sequences that are similar but not identical to EGF.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Scott, J -- Urdea, M -- Quiroga, M -- Sanchez-Pescador, R -- Fong, N -- Selby, M -- Rutter, W J -- Bell, G I -- 21344/PHS HHS/ -- New York, N.Y. -- Science. 1983 Jul 15;221(4607):236-40.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6602382" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Base Sequence ; Epidermal Growth Factor/biosynthesis/*genetics ; Humans ; Male ; Mice ; RNA, Messenger/*genetics ; Submandibular Gland/metabolism
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  • 190
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1983-08-19
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Smith, R J -- New York, N.Y. -- Science. 1983 Aug 19;221(4612):733-4.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6879172" target="_blank"〉PubMed〈/a〉
    Keywords: Aged ; Humans ; Male ; Middle Aged ; Multiple Myeloma/*etiology ; Neoplasms, Radiation-Induced/*etiology ; *Nuclear Warfare ; Veterans
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  • 191
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1984-08-24
    Description: Yohimbine hydrochloride, an alpha 2-adrenoceptor antagonist, increased sexual motivation in male rats as evidenced by increased mounting performance in mating tests conducted after genital anesthetization, increased percentage of male rats ejaculating in their first heterosexual encounter, and induction of copulatory behavior in sexually inactive male rats. These observations lead to the suggestion that alpha-adrenoceptors are important modulators of sexual arousal in intact male rats. These results indicate that pharmacological treatment of sexual (libido) dysfunction may be useful.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Clark, J T -- Smith, E R -- Davidson, J M -- MH 21178/MH/NIMH NIH HHS/ -- New York, N.Y. -- Science. 1984 Aug 24;225(4664):847-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6474156" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Aphrodisiacs/*pharmacology ; Copulation/drug effects ; Ejaculation/drug effects ; Male ; Motivation/drug effects ; Rats ; Receptors, Adrenergic/drug effects ; Sexual Behavior, Animal/*drug effects ; Yohimbine/*pharmacology
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  • 192
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1984-04-06
    Description: A complementary DNA clone for an alpha-tubulin has been isolated from a mouse testis complementary DNA library. The untranslated 3' end of this complementary DNA is homologous to two RNA transcripts present in postmeiotic cells of the testis but absent from meiotic cells and from several tissues including brain. The temporal expression of this alpha-tubulin complementary DNA provides evidence for the haploid expression of a mammalian structural gene.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Distel, R J -- Kleene, K C -- Hecht, N B -- GM 29224/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1984 Apr 6;224(4644):68-70.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6701535" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Brain/metabolism ; Cloning, Molecular ; DNA/genetics ; Drosophila ; Gene Expression Regulation ; Haploidy ; Male ; Mice ; Nucleic Acid Hybridization ; Rats ; Spermatids/metabolism ; Spermatogenesis ; Spermatozoa/physiology ; Testis/*metabolism ; Tubulin/*genetics
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  • 193
    Publication Date: 1984-12-21
    Description: Smell identification ability was measured in 1955 persons ranging in age from 5 to 99 years. On the average, women outperformed men at all ages, and nonsmokers outperformed smokers. Peak performance occurred in the third through fifth decades and declined markedly after the seventh. More than half of those 65 to 80 years old evidenced major olfactory impairment. After 80 years, more than three-quarters evidenced major impairment. Given these findings, it is not surprising that many elderly persons complain that food lacks flavor and that the elderly account for a disproportionate number of accidental gas poisoning cases each year.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Doty, R L -- Shaman, P -- Applebaum, S L -- Giberson, R -- Siksorski, L -- Rosenberg, L -- NS 16265/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 1984 Dec 21;226(4681):1441-3.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6505700" target="_blank"〉PubMed〈/a〉
    Keywords: Adolescent ; Adult ; Aged ; *Aging ; Child ; Child, Preschool ; Female ; Humans ; Male ; Middle Aged ; Sensory Thresholds ; Sex Factors ; Smell/*physiology ; Smoking
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  • 194
    Publication Date: 1984-08-31
    Description: The zona pellucida is an extracellular glycocalyx, made of three sulfated glycoproteins, that surrounds mammalian oocytes. Parenterally administered monoclonal antibodies specific for ZP-2, the most abundant zona protein, localize in the zona pellucida. When labeled with iodine-125, these monoclonal antibodies demonstrate a remarkably high target-to-nontarget tissue ratio and provide clear external radioimaging of ovarian tissue.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉East, I J -- Keenan, A M -- Larson, S M -- Dean, J -- New York, N.Y. -- Science. 1984 Aug 31;225(4665):938-41.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6474160" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antibodies, Monoclonal/*analysis ; Digestive System/immunology ; *Egg Proteins ; Female ; Glycoproteins/analysis/*immunology ; Iodine Radioisotopes ; Liver/immunology ; Male ; *Membrane Glycoproteins ; Mice ; Myocardium/immunology ; Ovary/analysis/immunology/*radionuclide imaging ; Ovum/*analysis ; *Receptors, Cell Surface ; Tissue Distribution ; Zona Pellucida/*analysis/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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  • 195
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1984-06-22
    Description: The pathophysiology of brain dysfunction was studied with an animal model of chronic alcoholism. Rats were fed a liquid diet with or without ethanol for 20 weeks and then the diet without ethanol for three more weeks. Hippocampal slices were prepared and intracellular recordings were obtained from dentate granule and CA1 cells. Significant depression of orthodromically elicited inhibitory postsynaptic potentials and postspike afterhyperpolarizations was observed in neurons from ethanol-exposed animals. No differences were observed in other active or passive membrane characteristics. These results suggest that a loss of neuronal inhibition could contribute to brain dysfunction in chronic alcoholism.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Durand, D -- Carlen, P L -- New York, N.Y. -- Science. 1984 Jun 22;224(4655):1359-61.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6328654" target="_blank"〉PubMed〈/a〉
    Keywords: Action Potentials/drug effects ; Alcoholism/physiopathology ; Animals ; Calcium/physiology ; Ethanol/*pharmacology ; Humans ; Ion Channels/drug effects ; Male ; Membrane Potentials/drug effects ; Neurons/*drug effects ; Rats ; Rats, Inbred Strains
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 196
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    Unknown
    American Association for the Advancement of Science (AAAS)
    Publication Date: 1984-01-20
    Description: Peptide synthesis can be used for elucidating the roles of secondary structures in the specificity of hormones, antigens, and toxins. Intermediate sized peptides with these activities assume amphiphilic secondary structures in the presence of membranes. When models are designed to optimize the amphiphilicity of the secondary structure, stronger interactions can be observed with the synthetic peptides than with the naturally occurring analogs.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kaiser, E T -- Kezdy, F J -- HL-18577/HL/NHLBI NIH HHS/ -- New York, N.Y. -- Science. 1984 Jan 20;223(4633):249-55.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6322295" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Apolipoprotein A-I ; Apolipoproteins ; Binding Sites ; Calcitonin ; Chemical Phenomena ; Chemistry ; Corticotropin-Releasing Hormone ; Endorphins ; Glucagon ; Growth Hormone-Releasing Hormone ; *Hormones/pharmacology ; Lipoproteins, HDL ; Melitten ; Models, Structural ; *Peptides/chemical synthesis/metabolism/pharmacology ; Protein Conformation ; Structure-Activity Relationship ; beta-Endorphin
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 197
    Publication Date: 1984-03-30
    Description: Coronary arteries from hearts of cardiac patients contain significantly higher concentrations of histamine than do those from noncardiac patients. The coronary vessels of cardiac patients are also hyperresponsive to histamine and serotonin. These differences between groups of patients suggest an explanation for coronary artery spasm in heart disease.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kalsner, S -- Richards, R -- New York, N.Y. -- Science. 1984 Mar 30;223(4643):1435-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6701530" target="_blank"〉PubMed〈/a〉
    Keywords: Adult ; Aged ; Animals ; Arteriosclerosis/physiopathology ; Catecholamines/analysis ; Cattle ; Coronary Vasospasm/*physiopathology ; Coronary Vessels/analysis/drug effects/*physiopathology ; Female ; Histamine/*analysis/pharmacology ; Humans ; Male ; Middle Aged ; Norepinephrine/pharmacology ; Serotonin/analysis/pharmacology
    Print ISSN: 0036-8075
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 198
    Publication Date: 1984-07-20
    Description: Lymphadenopathy-associated virus ( LAV ), a human T- lymphotrophic retrovirus isolated from a homosexual man with lymphadenopathy, has been causally associated with acquired immunodeficiency syndrome (AIDS). A sensitive and specific radioimmunoprecipitation test was developed for the detection of antibodies to the major core protein of LAV , p25 (molecular weight 25,000). Antibody to LAV p25 was found in the serum of 51 of 125 AIDS patients, 81 of 113 patients with lymphadenopathy syndrome, 0 of 70 workers at the Centers for Disease Control (some of whom had handled specimens from AIDS patients), and 0 of 189 random blood donors. Of a group of 100 homosexual men from San Francisco whose serum was obtained in 1978, only one had antibody to LAV p25; in contrast, of a group of 50 homosexual men in the same community whose serum was obtained in 1984, 12 had antibodies to LAV p25.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kalyanaraman, V S -- Cabradilla, C D -- Getchell, J P -- Narayanan, R -- Braff, E H -- Chermann, J C -- Barre-Sinoussi, F -- Montagnier, L -- Spira, T J -- Kaplan, J -- New York, N.Y. -- Science. 1984 Jul 20;225(4659):321-3.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6330889" target="_blank"〉PubMed〈/a〉
    Keywords: Acquired Immunodeficiency Syndrome/immunology/*microbiology ; Antibodies, Viral/*immunology ; Blood Donors ; Deltaretrovirus/immunology ; Homosexuality ; Humans ; Male ; Retroviridae/*immunology ; Retroviridae Infections/*immunology ; Viral Proteins/*immunology
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 199
    Publication Date: 1984-09-14
    Description: Nuclear estrogen receptor from MCF-7 cells undergoes a time-dependent, hormone-inducible transformation to a form that is less extractable from nuclei and less exchangeable with ligand. This receptor-modifying, intranuclear event is independent of receptor loss (processing) and appears associated with hormone responsiveness (progesterone-receptor induction) in these cells. The magnitude of receptor loss, however, is variable and apparently not a prerequisite for hormone action to induce progesterone receptor.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kasid, A -- Strobl, J S -- Huff, K -- Greene, G L -- Lippman, M E -- New York, N.Y. -- Science. 1984 Sep 14;225(4667):1162-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6474170" target="_blank"〉PubMed〈/a〉
    Keywords: Breast Neoplasms/*metabolism ; Cell Nucleus/metabolism ; Cells, Cultured ; Female ; Humans ; Receptors, Estradiol ; Receptors, Estrogen/*metabolism ; Receptors, Progesterone/biosynthesis ; Time Factors
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 200
    Publication Date: 1984-12-21
    Description: In the neocortices and amygdalae of young and aged macaques, cholinergic axons were identified by means of a monoclonal antibody to bovine choline acetyltransferase. Many fine, linear, immunoreactive profiles were seen in these animals. In the older animals, some cholinergic axons showed multifocal enlargements along their course. In some instances, neurites with choline acetyltransferase immunoreactivity were associated with deposits of amyloid (visualized with thioflavin T fluorescence). The appearance of these amyloid-associated abnormal cholinergic processes was similar to that of neurites in senile plaques, as shown by conventional silver impregnation techniques. Cholinergic systems thus give rise to some of the neurites within senile plaques.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kitt, C A -- Price, D L -- Struble, R G -- Cork, L C -- Wainer, B H -- Becher, M W -- Mobley, W C -- NS 07179/NS/NINDS NIH HHS/ -- NS 10580/NS/NINDS NIH HHS/ -- NS 15721/NS/NINDS NIH HHS/ -- etc. -- New York, N.Y. -- Science. 1984 Dec 21;226(4681):1443-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6505701" target="_blank"〉PubMed〈/a〉
    Keywords: *Aging ; Amygdala/enzymology/*pathology ; Amyloid/analysis ; Animals ; Antibodies, Monoclonal ; Axons/enzymology ; Cerebral Cortex/enzymology/*pathology ; Choline O-Acetyltransferase/analysis ; Female ; Humans ; Macaca mulatta ; Male ; Nerve Endings/enzymology ; Parasympathetic Nervous System/enzymology/*pathology
    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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