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  • Dose-Response Relationship, Drug  (148)
  • American Association for the Advancement of Science (AAAS)  (148)
  • Blackwell Publishing Ltd
  • 1980-1984  (89)
  • 1975-1979  (59)
  • 1925-1929
Collection
Keywords
Publisher
  • American Association for the Advancement of Science (AAAS)  (148)
  • Blackwell Publishing Ltd
Years
Year
  • 1
    Publication Date: 1978-08-25
    Description: Sex pheromones isolated from the cuticle of the female tsetse fly, Glossina morsitans morsitans Westwood, release mating behavior in the male fly at ultrashort range or upon contact with baited decoys. Three active components were identified as 15,19-dimethylheptatriacontane, 17,21-dimethylheptatriacontane, and 15,19,23-trimethylheptatriacontane. Chemical and biological comparisons show that the natural and synthetic compounds are identical.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Carlson, D A -- Langley, P A -- Huyton, P -- New York, N.Y. -- Science. 1978 Aug 25;201(4357):750-3.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/675256" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Dose-Response Relationship, Drug ; Female ; Male ; Pheromones/*isolation & purification ; Sex Attractants/chemical synthesis/*isolation & purification/pharmacology ; Sexual Behavior, Animal/drug effects ; Tsetse Flies/*analysis
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  • 2
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1978-01-20
    Description: The dibutyryl derivative of guanosine 3',5'-monophosphate (cyclic GMP), administered centrally, totally abolishes response to noxious stimuli without depressing the central nervous system. Analgesic properties of the nucleotide are not reversed by naloxone. Microinjected intracerebrally into different sites, dibutyryl cyclic GMP does not mimic the action of morphine. Pharmacological effects of dibutyryl cyclic GMP suggest that endogenous cyclic GMP modulates an inhibitory pain pathway distinct from that on which morphine acts.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Cohn, M L -- Cohn, M -- Taylor, P H -- New York, N.Y. -- Science. 1978 Jan 20;199(4326):319-22.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/202029" target="_blank"〉PubMed〈/a〉
    Keywords: *Analgesia ; Brain/*drug effects ; Cerebral Aqueduct ; Cyclic GMP/*analogs & derivatives ; Dibutyryl Cyclic GMP/*pharmacology ; Dose-Response Relationship, Drug ; Hot Temperature ; Morphine/pharmacology ; Motor Activity/drug effects ; Pain/*prevention & control ; Reticular Formation/drug effects
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  • 3
    Publication Date: 1978-03-24
    Description: Substance P produces analgesia when administered to mice in very small doses by the intraventricular route (1.25 to 5 nanograms per mouse). The analgesic effect can be blocked by naloxone. At higher doses (greater than 50 nanograms per mouse), this activity is lost. At these higher doses, however, substance P produced hyperalgesia when combined with naloxone and analgesia when combined with baclofen [beta-(4-chlorophenyl)-gamma-aminobutyric acid]. Substance P may have dual actions in brain, releasing endorphins at very low doses and directly exciting neuronal activity in nociceptive pathways at higher doses.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Frederickson, R C -- Burgis, V -- Harrell, C E -- Edwards, J D -- New York, N.Y. -- Science. 1978 Mar 24;199(4335):1359-62.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/204012" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Baclofen/pharmacology ; Dose-Response Relationship, Drug ; Endorphins/*pharmacology ; Enkephalins/antagonists & inhibitors/*pharmacology ; Mice ; Naloxone/pharmacology ; Nociceptors/*drug effects ; Receptors, Opioid/*drug effects ; Structure-Activity Relationship ; Substance P/analogs & derivatives/antagonists & inhibitors/*pharmacology
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 4
    Publication Date: 1978-05-05
    Description: The presence of diazepam in culutres of chicken embryo myoblasts arrests normal muscle cell differentiation. High concentrations of the drug reversibly prevent myoblasts from fusing to form multinucleated myotubes. Lower concentrations of diazepam allow cell fusion to occur, but inhibit the synthesis and accumulation of myosin heavy chain, implying that cell fusion does not obligate myoblasts to synthesize and accumulate large quantities of muscle specific protein. The effect of diazepam on muscle cells in culture is direct and specific.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Bandman, E -- Walker, C R -- Strohman, R C -- New York, N.Y. -- Science. 1978 May 5;200(4341):559-61.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/565534" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cell Differentiation/drug effects ; Cell Fusion/drug effects ; Cells, Cultured ; Chick Embryo ; Diazepam/*pharmacology ; Dose-Response Relationship, Drug ; Macromolecular Substances ; Muscles/cytology/*drug effects ; Myosins/*biosynthesis
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  • 5
    Publication Date: 1978-11-10
    Description: In rhesus monkeys with hypothalamic lesions that abolish gonadotropic hormone release by the pituitary gland, the constant infusion of exogenous gonadotropin-releasing hormone (GnRH) fails to restore sustained gonadotropin secretion. In marked contrast, intermittent administration of the synthetic decapeptide once per hour, the physiological frequency of gonadotropin release in the monkeys, reestablishes pituitary gonadotropin secretion. This phenomenon is attributable to the pattern of GnRH delivery rather than to the amounts of this hormone to which the cells of the pituitary are exposed. Moreover, the initiation of continuous GnRH administration in animals with lesions and in which gonadotropin secretion is reestablished by intermittent GnRH replacement can result in a "desensitization" or "down regulation" of the processes responsible for gonadotropin release.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Belchetz, P E -- Plant, T M -- Nakai, Y -- Keogh, E J -- Knobil, E -- New York, N.Y. -- Science. 1978 Nov 10;202(4368):631-3.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/100883" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Castration ; Dose-Response Relationship, Drug ; Drug Administration Schedule ; Female ; Follicle Stimulating Hormone/*secretion ; Gonadotropin-Releasing Hormone/administration & dosage/*pharmacology ; Haplorhini ; Luteinizing Hormone/*secretion ; Macaca mulatta ; Pituitary Gland, Anterior/*drug effects/secretion
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  • 6
    Publication Date: 1978-10-13
    Description: Volunteer subjects with previous histories of cocaine use were administered cocaine hydrochloride intravenously or intranasally. There was a positive relationship between peak plasma concentration, physiological and subjective responses, and dose administered. The rate of cocaine disappearance after intravenous administration paralleled the drop in physiological and subjective drug effects. After intranasal administration, blood levels remained elevated for a considerably longer period.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Javaid, J I -- Fischman, M W -- Schuster, C R -- Dekirmenjian, H -- Davis, J M -- New York, N.Y. -- Science. 1978 Oct 13;202(4364):227-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/694530" target="_blank"〉PubMed〈/a〉
    Keywords: Administration, Intranasal ; Cocaine/administration & dosage/*blood/*pharmacology ; Dose-Response Relationship, Drug ; Euphoria/*drug effects ; Heart Rate/drug effects ; Humans ; Injections, Intravenous ; Kinetics ; Metabolic Clearance Rate
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  • 7
    Publication Date: 1978-12-08
    Description: Nineteen epileptic patients were tested first under medium (week 1) and then under high (week 2) therapeutic levels of phenobarbital. Relative to response times of 20 controls with equivalent practice but without medication, response times of patients in a short-term memory scanning task were strikingly slowed during week 2. However, increased phenobarbital did not slow responses in a task requiring access to information in long-term memory.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉MacLeod, C M -- Dekabian, A S -- Hunt, E -- New York, N.Y. -- Science. 1978 Dec 8;202(4372):1102-4.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/715461" target="_blank"〉PubMed〈/a〉
    Keywords: Adult ; Dose-Response Relationship, Drug ; Epilepsy/*drug therapy ; Humans ; Memory, Short-Term/*drug effects ; Middle Aged ; Phenobarbital/adverse effects/*pharmacology
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  • 8
    Publication Date: 1978-03-31
    Description: The opiate etorphine depresses monosynaptic excitatory postsynaptic potentials (EPSP's) elicited in spinal cord cells by activation of dorsal root ganglion cells in murine neuronal cell culture. The depression is reversed by naloxone. Statistical analysis of the synaptic responses reveals that the opiate reduces EPSP quantal content at this synapse without altering quantal size. Therefore, the opiate action is presynaptic and affects transmitter release rather than postsynaptic responsiveness.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Macdonald, R L -- Nelson, P G -- New York, N.Y. -- Science. 1978 Mar 31;199(4336):1449-51.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/204015" target="_blank"〉PubMed〈/a〉
    Keywords: Cells, Cultured ; Depression, Chemical ; Dose-Response Relationship, Drug ; Etorphine/*pharmacology ; Ganglia, Spinal/*drug effects ; Membrane Potentials/drug effects ; Morphinans/*pharmacology ; Naloxone/pharmacology ; Nerve Endings/drug effects ; Spinal Cord/drug effects ; Synapses/drug effects ; Synaptic Transmission/*drug effects
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  • 9
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1978-12-01
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Marshall, E -- New York, N.Y. -- Science. 1978 Dec 1;202(4371):949-50.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/715452" target="_blank"〉PubMed〈/a〉
    Keywords: *Air Pollutants/toxicity ; Dose-Response Relationship, Drug ; Environmental Exposure ; Government Agencies ; Humans ; Industry ; Ozone/toxicity ; United States
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  • 10
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1978-12-22
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Marx, J L -- New York, N.Y. -- Science. 1978 Dec 22;202(4374):1270-1.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/725601" target="_blank"〉PubMed〈/a〉
    Keywords: Dose-Response Relationship, Drug ; Estrogens/*adverse effects ; Female ; Hemorrhage/etiology ; Humans ; Risk ; Uterine Diseases/etiology ; Uterine Neoplasms/diagnosis/*etiology
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  • 11
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1978-04-07
    Description: The pentapeptides methionine-enkephalin and leucine-enkephalin are both able to reduce experimentally induced amnesia in rats. In contrast to the possible analgesic activity of these peptides, the anti-amnesic effect is seen after systemic administration of dosages of 30 micrograms or lower. The nature of the anti-amnesic effect is different for the two peptides.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Rigter, H -- New York, N.Y. -- Science. 1978 Apr 7;200(4337):83-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/635578" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Avoidance Learning/*drug effects ; Carbon Dioxide/antagonists & inhibitors ; Dose-Response Relationship, Drug ; Endorphins/*pharmacology ; Enkephalins/*pharmacology ; Male ; Memory/*drug effects ; Rats ; Time Factors
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  • 12
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1978-06-16
    Description: A purified sodium and potassium dependent adenosinetriphosphatase isolated from cat heart was not stimulated by any concentration of ouabain that produced positive inotropy of cat papilliary muscle. Only inhibition of enzyme activity was observed. Concentrations of ouabain used ranged from 3.3 x 10(-10) molar to 5 x 10(-7) molar and produced an increased force of contraction without any evidence of toxicity. The results are inconsistent with a concept that stimulation of sodium pump activity is associated with positive inotropy.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Michael, L -- Pitts, B J -- Schwartz, A -- New York, N.Y. -- Science. 1978 Jun 16;200(4347):1287-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/149369" target="_blank"〉PubMed〈/a〉
    Keywords: Adenosine Triphosphatases/*antagonists & inhibitors ; Animals ; Biological Transport, Active/drug effects ; Cats ; Dose-Response Relationship, Drug ; In Vitro Techniques ; Myocardial Contraction/*drug effects ; Myocardium/*enzymology ; Ouabain/*pharmacology ; Potassium/metabolism ; Sodium/metabolism
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  • 13
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1978-03-31
    Description: delta9-Tetrahydrocannabinol, the most active constituent of marihuana, decreased species-specific attack behavior in mice, rats, and squirrel monkeys at doses (0.25 to 2.0 milligram per kilogram of body weight) that have no effects on other elements of the behavioral repertoire. Aggressive behavior was engendered in all three species by confronting a resident animal with an intruder conspecific. The present results contrast with the widely held belief that marihuana increases aggressive behavior.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Miczek, K A -- New York, N.Y. -- Science. 1978 Mar 31;199(4336):1459-61.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/415367" target="_blank"〉PubMed〈/a〉
    Keywords: Aggression/*drug effects ; Animals ; Behavior, Animal/*drug effects ; Depression, Chemical ; Dose-Response Relationship, Drug ; Dronabinol/*pharmacology ; Female ; Haplorhini ; Humans ; Male ; Mice ; Motor Activity/drug effects ; Rats ; Saimiri ; Territoriality
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  • 14
    Publication Date: 1978-07-07
    Description: Endogenous opiate-like peptides (endorphins) are putative neuroregulators located throughout the mammalian brainstem. There is some evidence for their role in pain, stress, and affect. We report that the opiate antagonist, naloxone, alters some schizophrenic symptoms. In a double-blind, cross-over study, naloxone produced decreases in auditory hallucinations in some schizophrenic patients. This finding supports the hypothesis that the endorphins may play a roll in modulating hallucinations in a highly selected subgroup of chronically hallucinating schizophrenic patients.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Watson, S J -- Berger, P A -- Akil, H -- Mills, M J -- Barchas, J D -- New York, N.Y. -- Science. 1978 Jul 7;201(4350):73-6.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/351804" target="_blank"〉PubMed〈/a〉
    Keywords: Adult ; Chronic Disease ; Clinical Trials as Topic ; Dose-Response Relationship, Drug ; Double-Blind Method ; Endorphins/physiology ; Hallucinations/*drug therapy ; Humans ; Male ; Naloxone/administration & dosage/*therapeutic use ; Schizophrenia/*drug therapy/physiopathology ; Schizophrenia, Paranoid/drug therapy ; Time Factors
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  • 15
    Publication Date: 1978-03-17
    Description: With naloxone as antagonist, a dose-ratio analysis of the depression by morphine of nociceptive neurons in the spinal cord reveals that this opiate depression of single unit activity has the same pharmacological properties as observed with morphine analgesia. This suggests that the opiate receptor, mediating the observed cellular depression, and those mediating analgesia are presumably the same.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Yaksh, T L -- New York, N.Y. -- Science. 1978 Mar 17;199(4334):1231-3.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/204008" target="_blank"〉PubMed〈/a〉
    Keywords: Action Potentials/drug effects ; Animals ; Cats ; Decerebrate State ; Dose-Response Relationship, Drug ; Morphine/*pharmacology ; Naloxone/*pharmacology ; Nerve Fibers/physiology ; Nociceptors/*drug effects/physiology ; Receptors, Opioid/*physiology ; Spinal Cord/physiology
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  • 16
    Publication Date: 1979-11-30
    Description: Micropipettes containing 2 to 50 biological units of beta growth factor (NGF) were placed near growing axons of chick dorsal-root ganglion neurons in tissue culture. The axons turned and grew toward the NGF source within 21 minutes. This turning response to elevated concentrations of NGF appears to represent chemotactic guidance rather than a general enhancement of growth rate.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Gundersen, R W -- Barrett, J N -- New York, N.Y. -- Science. 1979 Nov 30;206(4422):1079-80.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/493992" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Axons/growth & development/*physiology ; Cells, Cultured ; *Chemotaxis/drug effects ; Chick Embryo ; Dose-Response Relationship, Drug ; Ganglia, Spinal/physiology ; Nerve Growth Factors/*pharmacology
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  • 17
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1979-10-05
    Description: The uptake of 45Ca2+ by nerve-ending fractions from brains of mice was inhibited in vitro by 10(-9)M concentrations of beta-endorphin and in mice injected intraventricularly with 7 picomoles of beta-endorphin. That the effect was a specific opiate agonist response of beta-endorphin was demonstrated by use of the opiate antagonist, naloxone, which reversed the action. A role for beta-endorphin in the regulation of calcium flux and neurotransmitter release should be considered.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Guerrero-Munoz, F -- de Lourdes Guerrero, M -- Way, E L -- Li, C H -- New York, N.Y. -- Science. 1979 Oct 5;206(4414):89-91.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/39340" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Biological Transport/drug effects ; Calcium/*metabolism ; Dose-Response Relationship, Drug ; Drug Tolerance ; Endorphins/antagonists & inhibitors/*pharmacology ; Male ; Mice ; Naloxone/pharmacology ; Neurotransmitter Agents/metabolism ; Rats ; Synaptosomes/*drug effects/metabolism
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  • 18
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1979-09-14
    Description: Single-dose administration of pergolide mesylate (100 to 400 micrograms) results in a dose-related inhibition of prolactin secretion which persists for more than 24 hours. During multiple-dose administration of pergolide, plasma prolactin concentrations remain markedly reduced (greater than 80 percnet) and gradually return to control levels several days after drug administration is discontinued.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lemberger, L -- Crabtree, R E -- New York, N.Y. -- Science. 1979 Sep 14;205(4411):1151-3.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/382359" target="_blank"〉PubMed〈/a〉
    Keywords: Adult ; Clinical Trials as Topic ; Dose-Response Relationship, Drug ; Ergolines/*pharmacology/therapeutic use ; Humans ; Informed Consent ; Male ; Middle Aged ; Placebos ; Prolactin/blood ; Receptors, Dopamine/*drug effects ; Time Factors
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  • 19
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1979-01-05
    Description: An adenylate cyclase activated as much as 25-fold by low concentrations of octopamine has been identified in the firefly lantern. The relative potency of octopamine and various other amines in stimulating this enzyme, and effects of antagonists in blocking octopamine activation, correlate well with the known effects of these agents in affecting light production. In addition to suggesting a role for adenosine 3',5'-monophosphate (or pyrophosphate) in the neural control of firefly flashing, identification of this potent enzyme should facilitate the characterization of phenylethylamine receptors in excitable tissue.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Nathanson, J A -- New York, N.Y. -- Science. 1979 Jan 5;203(4375):65-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/214856" target="_blank"〉PubMed〈/a〉
    Keywords: Adenylyl Cyclases/*metabolism ; Animals ; Beetles/*physiology ; Catecholamines/pharmacology ; Cyclic AMP/*biosynthesis ; Dose-Response Relationship, Drug ; Enzyme Activation/drug effects ; Kinetics ; Octopamine/*pharmacology ; Phentolamine/pharmacology ; Propranolol/pharmacology ; Receptors, Cell Surface/*drug effects ; Receptors, Neurotransmitter/*drug effects ; Structure-Activity Relationship
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  • 20
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1979-06-08
    Description: Rats were exposed to sodium nitrite in food or water at concentrations of 0, 250, 1000, and 2000 parts per million. Lymphoma was increased in all groups fed nitrite; the overall combined incidence was 5.4 percent in 573 control rats and 10.2 percent in 1383 treated rats. The mechanism of cancer induction did not appear to be through the formation of nitrosamines but through a more direct effect of nitrite on the lymphocyte.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Newberne, P M -- New York, N.Y. -- Science. 1979 Jun 8;204(4397):1079-81.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/451551" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Dose-Response Relationship, Drug ; Lymphocytes/drug effects ; Lymphoma/*chemically induced ; Neoplasms, Experimental/chemically induced ; *Nitrites/pharmacology ; Rats
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  • 21
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1979-08-17
    Description: Rats were trained to discriminate drug from no-drug conditions in a two-lever operant task. Moderately high dosages were used initially. Whenever the discrimination was learned, training was continued with progressively reduced dosages. Eventually the rats discriminated extremely low doses of phenobarbital, chlordiazepoxide, cyclazocine, and fentanyl.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Overton, D A -- New York, N.Y. -- Science. 1979 Aug 17;205(4407):720-1.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/462182" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Chlordiazepoxide/pharmacology ; Cyclazocine/pharmacology ; Discrimination Learning/*physiology ; Dose-Response Relationship, Drug ; Fentanyl/pharmacology ; *Pharmacology ; Phenobarbital/pharmacology ; Rats ; Scopolamine Hydrobromide/pharmacology
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  • 22
    Publication Date: 1979-03-30
    Description: In the presence of low-intensity pulsed microwave radiation, at an average power density of 1 milliwatt per square centimeter, the response-rate-increasing effects of chlordiazepoxide were potentiated in rats. The behavioral effects of a drug can be modified by brief exposure to a low-level microwave field even when the radiation level alone has no apparent effects on the behavior.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Thomas, J R -- Burch, L S -- Yeandle, S S -- New York, N.Y. -- Science. 1979 Mar 30;203(4387):1357-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/424759" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Behavior, Animal/drug effects/*radiation effects ; Chlordiazepoxide/*pharmacology ; Dose-Response Relationship, Drug ; Dose-Response Relationship, Radiation ; Male ; *Microwaves ; Rats
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  • 23
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1979-03-23
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Warner, J S -- New York, N.Y. -- Science. 1979 Mar 23;203(4386):1194-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/424746" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Dose-Response Relationship, Drug ; Female ; Humans ; Ketones/*toxicity ; Nickel/*toxicity ; Occupational Medicine ; Pregnancy ; Rats ; *Teratogens
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  • 24
    Publication Date: 1979-09-21
    Description: The decrease in resting oxygen consumption induced by starvation was found to occur not only in euthyroid rats but also in hypothyroid and even in hypothyroid animals treated with triiodothyronine. Furthermore, the effectiveness of triiodothyronine was decreased when given to hypothyroid animals.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Wimpfheimer, C -- Saville, E -- Voirol, M J -- Danforth, E Jr -- Burger, A G -- New York, N.Y. -- Science. 1979 Sep 21;205(4412):1272-3.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/224460" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Dose-Response Relationship, Drug ; Energy Metabolism/drug effects ; Hypothyroidism/metabolism ; Male ; Oxygen Consumption/*drug effects ; Rats ; Receptors, Cell Surface/drug effects ; Starvation/*metabolism ; Triiodothyronine/*pharmacology
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  • 25
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1979-11-30
    Description: Wild-type Chinese hamster V79 cells (6-thioguanine-sensitive) reduce the recovery of 6-thioguanine-resistant cells when they are cultured together at high densities, through a form of intercellular communication (metabolic cooperation). Cooperation is inhibited by 12-O-tetradecanoyl phorbol-13-acetate, rescuing the 6-thioguanine-resistant cells. These results may be useful in the study of an aspect of the mechanism of tumor promotion and in assaying for promoters.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Yotti, L P -- Chang, C C -- Trosko, J E -- New York, N.Y. -- Science. 1979 Nov 30;206(4422):1089-91.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/493994" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cell Communication/*drug effects ; Cell Membrane/drug effects ; Cricetinae ; Dose-Response Relationship, Drug ; Drug Resistance ; Phorbol Esters/*pharmacology ; Phorbols/*pharmacology ; Structure-Activity Relationship ; Tetradecanoylphorbol Acetate/pharmacology ; Thioguanine/pharmacology
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  • 26
    Publication Date: 1980-04-25
    Description: In BALB/c female mice with melanoma transplants, the incidence of "takes" is decreased and survival is increased by hydroquinone, a melanocytolytic agent. The mechanism of drug action is suggested by via DNA. The significant and high degree of positive response to hydroquinone treatment in vivo is encouraging for the clinical management of melanoma with melanocytolytic agents.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Chavin, W -- Jelonek, E J Jr -- Reed, A H -- Binder, L R -- New York, N.Y. -- Science. 1980 Apr 25;208(4442):408-10.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7367868" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Disease Models, Animal ; Dose-Response Relationship, Drug ; Female ; Hydroquinones/metabolism/*therapeutic use ; Melanocytes/metabolism ; Melanoma/*drug therapy ; Mice ; Neoplasm Transplantation ; Neoplasms, Experimental/drug therapy
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  • 27
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1980-11-07
    Description: Lanosterol, a cholesterol precursor that increases considerably in the platelets of rats treated with oral contraceptives, was incubated with either platelet-rich plasma or washed platelet suspension. After 2 minutes there was a remarkable dose-related increase in platelet activity. This platelet hyperactivity was measured by clotting time and platelet aggregation could not be reproduced by cholesterol or ethinylestradiol.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Ciavatti, M -- Dumont, E -- Benoit, C -- Renaud, S -- New York, N.Y. -- Science. 1980 Nov 7;210(4470):642-4.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7433990" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Blood Coagulation/*drug effects ; Blood Platelets/*drug effects ; Contraceptives, Oral/*pharmacology ; Dose-Response Relationship, Drug ; Female ; Lanosterol/*pharmacology ; Platelet Aggregation/*drug effects ; Rats
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  • 28
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1980-03-14
    Description: Mebendazole was highly effective against the helminth parasite Trichinella spiralis in mice subjected to a 3-day course of treatment during the invasive and encystment phases of experimental trichinellosis. When treatment began either 2 or 4 weeks after the mice were inoculated with parasites, the number of larvae developing in the host musculature was greatly reduced by twice-daily oral administration of 3.125, 6.25, or 12.5 milligrams of mebendazole per kilogram of body weight.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉McCracken, R O -- Taylor, D D -- New York, N.Y. -- Science. 1980 Mar 14;207(4436):1220-2.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7355285" target="_blank"〉PubMed〈/a〉
    Keywords: Administration, Oral ; Animals ; Benzimidazoles/*therapeutic use ; Disease Models, Animal ; Dose-Response Relationship, Drug ; Larva ; Male ; Mebendazole/administration & dosage/*therapeutic use ; Mice ; Muscles/parasitology ; Trichinella/drug effects ; Trichinellosis/*drug therapy
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  • 29
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1980-04-18
    Description: In the hot plate test, substance P given intravenously at doses of 5 x 10-5 and 5 x 10-4 gram per kilogram caused analgesia, while lower doses caused hyperalgesia. The influence of substance P on nociception depended on the individual mouse's sensitivity to pain (control response latency). Analgesia was produced by substance P administered to mice with high sensitivity to thermic stimulation, whereas hyperalgesia occurred in mice whose control latencies were longer than normal. This result is interpreted as an indication that substance P is capable of normalizing responsiveness to pain and could be classified as a regulatory peptide.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Oehme, P -- Hilse, H -- Morgenstern, E -- Gores, E -- New York, N.Y. -- Science. 1980 Apr 18;208(4441):305-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6154313" target="_blank"〉PubMed〈/a〉
    Keywords: Acetates ; Animals ; Dose-Response Relationship, Drug ; Hot Temperature ; Hyperalgesia/*chemically induced ; Hyperesthesia/*chemically induced ; Mice ; Nociceptors/drug effects ; Pain/*physiopathology ; Perception/*drug effects ; Receptors, Drug/physiology ; Substance P/*pharmacology
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  • 30
    Publication Date: 1980-03-21
    Description: The interplay of insulin, cortisol, and prolactin induces synthesis of casein and alpha-lactalbumin in cultured mammary explants from mature virgin mice. A striking difference has been found between the optimal concentrations of cortisol required for maximal induction of the two milk proteins in vitro: 3 x 10(-8) molar for alpha-lactalbumin and 3 x 10(-6) molar for casein. Moreover, 10(-7) to 10(-5) molar cortisol caused progressive inhibition of alpha-lactalbumin accumulation. Such differential actions of cortisol may partly account for the asynchronous synthesis of the two proteins during pregnancy.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Ono, M -- Oka, T -- New York, N.Y. -- Science. 1980 Mar 21;207(4437):1367-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6986657" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Caseins/*biosynthesis ; Dose-Response Relationship, Drug ; Drug Interactions ; Female ; Hydrocortisone/*pharmacology ; Insulin/pharmacology ; Lactalbumin/*biosynthesis ; Mammary Glands, Animal/drug effects/*metabolism ; Mice ; Organ Culture Techniques ; Pregnancy ; Prolactin/pharmacology
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  • 31
    Publication Date: 1980-06-13
    Description: The cellular basis of kindling was studied electrophysiologically with slices of guinea pig hippocampus. Normally, epileptiform activity can be induced in the slices only by combined exposure to elevated potassium levels and a chemical convulsant such as penicillin. In hippocampal slices from pentylenetetrazole-kindled animals, however, elevated potassium alone can induce seizures. These data suggest that kindling elicits long-term changes in neuronal excitability that may involve ionic mechanisms.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Oliver, A P -- Hoffer, B J -- Wyatt, R J -- New York, N.Y. -- Science. 1980 Jun 13;208(4449):1264-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7375936" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Dose-Response Relationship, Drug ; Epilepsy/chemically induced/*physiopathology ; Guinea Pigs ; Hippocampus/drug effects/*physiology ; In Vitro Techniques ; Male ; Neurons/drug effects/physiology ; Pentylenetetrazole/administration & dosage/pharmacology ; Potassium/*pharmacology
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  • 32
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1980-03-28
    Description: Forty children were given a diet free of artificial food dyes and other additives for 5 days. Twenty of the children had been classified as hyperactive by scores on the Conners Rating Scale and were reported to have favorable responses to stimulant medication. A diagnosis of hyperactivity had been rejected in the other 20 children. Oral challenges with large doses (100 or 150 milligrams) of a blend of FD & C approved food dyes or placebo were administered on days 4 and 5 of the experiment. The performance of the hyperactive children on paired-associate learning tests on the day they received the dye blend was impaired relative to their performance after they received the placebo, but the performance of the nonhyperactive group was not affected by the challenge with the food dye blend.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Swanson, J M -- Kinsbourne, M -- New York, N.Y. -- Science. 1980 Mar 28;207(4438):1485-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7361102" target="_blank"〉PubMed〈/a〉
    Keywords: Child ; Dose-Response Relationship, Drug ; Female ; Food Coloring Agents/*pharmacology ; Humans ; Hyperkinesis/*physiopathology ; Learning/*drug effects ; Male ; Time Factors
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  • 33
    Publication Date: 1980-10-17
    Description: The genotoxicity of the antihypertensive agents hydralazine and dihydralazine was tested in mammalian cells and bacteria. Both drugs elicited DNA repair in rat hepatocyte primary cultures. In the Ames test, both with and without an S-9 fraction, hydralazine was mutagenic in strains TA100 and TA1537, whereas dihydralazine was weakly mutagenic in strain TA1537. These findings support the observation that hydralazine is carcinogenic in mice. The carcinogenicity of many chemicals results from interaction with DNA. Since these studies demonstrate that hydralazine and dihydralazine damage DNA in mammalian cells, these drugs should be viewed as potential human carcinogens.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Williams, G M -- Mazue, G -- McQueen, C A -- Shimada, T -- N 01-CP-55705/CP/NCI NIH HHS/ -- New York, N.Y. -- Science. 1980 Oct 17;210(4467):329-30.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7423193" target="_blank"〉PubMed〈/a〉
    Keywords: Acetylation ; Animals ; Biotransformation ; *Carcinogens ; Cells, Cultured ; DNA Repair/*drug effects ; Dihydralazine/*toxicity ; Dose-Response Relationship, Drug ; Drug Evaluation, Preclinical ; Hydralazine/*analogs & derivatives/*toxicity ; Liver/metabolism ; *Mutagens ; Rats ; Salmonella typhi/drug effects
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  • 34
    Publication Date: 1980-02-15
    Description: In rats, multiple daily amphetamine injections (2.5 milligrams per kilogram of body weight, injected subcutaneously every 4 hours for 5 days) resulted in a progressive augmentation in response, characterized by a more rapid onset and an increased magnitude of stereotypy. By contrast, offset times of both the stereotypy and the poststereotypy hyperactivity periods were markedly shortened. When the animals were retested with the same dose of amphetamine 8 days after the long-term treatment was discontinued, the time of offset of the stereotypy and hyperactivity phases had recovered to values found with short-term amphetamine treatment, whereas the more rapid onset of stereotypy persisted. Brain monoamine and amphetamine concentrations and tyrosine hydroxylase activity were determined in comparably treated rats at times corresponding to the behavioral observations. The behavioral data indicate that enhanced responsiveness to amphetamine following its repeated administration may contribute to the development of amphetamine psychosis.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Segal, D S -- Weinberger, S B -- Cahill, J -- McCunney, S J -- New York, N.Y. -- Science. 1980 Feb 15;207(4433):905-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7188815" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Behavior/*drug effects ; Behavior, Animal/*drug effects ; Brain/metabolism ; Brain Chemistry/drug effects ; Dextroamphetamine/administration & dosage/*pharmacology ; Dopamine/metabolism ; Dose-Response Relationship, Drug ; Humans ; Male ; Motor Activity/drug effects ; Norepinephrine/metabolism ; Rats ; Serotonin/metabolism ; Stereotyped Behavior/*drug effects ; Time Factors
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  • 35
    Publication Date: 1981-02-06
    Description: Administration of the herbicide 2,4,5-trichlorophenoxyacetic acid to incubating chicken eggs alters behavior after hatching. Single doses, with no morphological effects, retard learning (lowest dose, 7 milligrams per kilogram of body weight) and increase general activity (27 milligrams per kilogram) and jumping (13 milligrams per kilogram). Day 15 of incubation is the most susceptible stage of development.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Sanderson, C A -- Rogers, L J -- New York, N.Y. -- Science. 1981 Feb 6;211(4482):593-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7455699" target="_blank"〉PubMed〈/a〉
    Keywords: 2,4,5-Trichlorophenoxyacetic Acid/*pharmacology/toxicity ; Age Factors ; Animals ; Behavior, Animal/*drug effects ; Chick Embryo/drug effects ; Chickens ; Discrimination Learning/drug effects ; Dose-Response Relationship, Drug ; Motor Activity/drug effects
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  • 36
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1981-07-17
    Description: Bee venom and phospholipase A2 extracted from bee venom enhanced guanylate cyclase (E.C. 4.6.1.2) activity two- to threefold in rat liver, lung, heart, kidney, ileum, and cerebellum. Dose-response relationships revealed that bee venom at concentrations as low as 1 microgram per milliliter and phospholipase A2 at 1 microunit per milliliter caused a maximal enhancement of guanylate cyclase.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Vesely, D L -- New York, N.Y. -- Science. 1981 Jul 17;213(4505):359-60.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6113689" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Bee Venoms/*pharmacology ; Dose-Response Relationship, Drug ; Enzyme Activation ; Guanylate Cyclase/*metabolism ; Kinetics ; Organ Specificity ; Phospholipases/*pharmacology ; Phospholipases A/*pharmacology ; Phospholipases A2 ; Rats
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  • 37
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1981-04-03
    Description: A chemical impurity isolated from commercially purchased acridine causes cricket embryos to develop extra compound eyes, branched antennae, extra antennae, and extra heads. Purified acridine does not produce similar duplications of cricket heads or head structures nor do the substituted acridines proflavine, acriflavine, or acridine orange. A dose-response relation exists such that the number and severity of abnormalities increase with increasing concentration of the teratogen.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Walton, B T -- New York, N.Y. -- Science. 1981 Apr 3;212(4490):51-3.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6782672" target="_blank"〉PubMed〈/a〉
    Keywords: Abnormalities, Multiple/chemically induced ; Acridines/*isolation & purification/pharmacology ; Animals ; Dose-Response Relationship, Drug ; Drug Contamination ; Embryo, Nonmammalian/drug effects ; Eye Abnormalities ; Head/abnormalities ; Orthoptera/*drug effects ; *Teratogens
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  • 38
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1981-07-31
    Description: Rats were trained to walk on a treadmill to avoid foot shock. The animals developed tolerance for ethanol if given subsequent practice while ethanol intoxicated. Rats given equivalent doses of ethanol after practice did not develop tolerance, nor did saline-treated controls. These results challenge the hypothesis that mere repeated doses of ethanol are sufficient to induce tolerance. It seems that tolerance does not develop unless the response used to measure tolerance is performed while the subject is intoxicated.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Wenger, J R -- Tiffany, T M -- Bombardier, C -- Nicholls, K -- Woods, S C -- 03504/PHS HHS/ -- AA 04658/AA/NIAAA NIH HHS/ -- New York, N.Y. -- Science. 1981 Jul 31;213(4507):575-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7244656" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Avoidance Learning/*drug effects ; Dose-Response Relationship, Drug ; Drug Tolerance ; Ethanol/blood/*pharmacology ; Rats
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  • 39
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1982-04-30
    Description: Calcium ionophore A23187 promotes ooplasmic segregation and orange crescent formation in eggs of the ascidian Boltenia villosa. When eggs were exposed to a gradient A23187 the orange crescent was induced to form in the region corresponding to the highest concentration of ionophore. This result is consistent with the hypothesis that a local increase in intracellular calcium polarizes cytoplasmic localization in the ascidian embryo.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Jeffery, W R -- 232-HDO-7098/HD/NICHD NIH HHS/ -- HD-13970/HD/NICHD NIH HHS/ -- New York, N.Y. -- Science. 1982 Apr 30;216(4545):545-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6803360" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Anti-Bacterial Agents/*pharmacology ; Calcimycin/*pharmacology ; Calcium/*physiology ; Cell Compartmentation/drug effects ; Cytoplasm/ultrastructure ; Dose-Response Relationship, Drug ; Female ; Ovum/*drug effects/ultrastructure ; Urochordata
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  • 40
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1982-09-24
    Description: Phencyclidine elicits hyperthermia at low doses and hypothermia at high doses in rats. Naloxone antagonizes both effects. Phencyclidine's effects on thermo-regulation are probably mediated by an interaction with a mu opiate receptor.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Glick, S D -- Guido, R A -- DA 02534/DA/NIDA NIH HHS/ -- DA 70082/DA/NIDA NIH HHS/ -- New York, N.Y. -- Science. 1982 Sep 24;217(4566):1272-3.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6287581" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Body Temperature Regulation/*drug effects ; Dose-Response Relationship, Drug ; Female ; Naloxone/pharmacology ; Phencyclidine/antagonists & inhibitors/*pharmacology ; Rats ; Receptors, Opioid/*drug effects
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  • 41
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1983-09-23
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉New York, N.Y. -- Science. 1983 Sep 23;221(4617):1244-6.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6684327" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Dose-Response Relationship, Drug ; Ethanol/*adverse effects ; Female ; Pregnancy ; Pregnancy, Animal/*drug effects
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  • 42
    Publication Date: 1983-04-29
    Description: Selective pharmacological inhibition of thromboxane A2 synthesis did not prevent arachidonate-induced aggregation of human platelets in vitro. Prevention was instead achieved by a combination of thromboxane A2 inhibitors with low concentrations of aspirin. The latter partially reduced the proaggregatory cyclooxygenase products that accumulated when thromboxane A2 synthesis was blocked. The aspirin concentrations did not affect per se either platelet aggregation or prostacyclin synthesis in cultured human endothelial cells. The combination of thromboxane synthetase inhibitors with low doses of aspirin may offer greater antithrombotic potential than either drug alone.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Bertele, V -- Falanga, A -- Tomasiak, M -- Dejana, E -- Cerletti, C -- de Gaetano, G -- New York, N.Y. -- Science. 1983 Apr 29;220(4596):517-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6682245" target="_blank"〉PubMed〈/a〉
    Keywords: Aspirin/*pharmacology ; Blood Platelets/*drug effects/enzymology ; Dose-Response Relationship, Drug ; Drug Interactions ; Humans ; Imidazoles/pharmacology ; Methacrylates/pharmacology ; Oxidoreductases/*antagonists & inhibitors ; Platelet Aggregation/drug effects ; Thromboxane-A Synthase/*antagonists & inhibitors
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  • 43
    Publication Date: 1983-07-01
    Description: Mammalian atrial extracts possess natriuretic and diuretic activity. In experiments reported here it was found that atrial, but not ventricular, extract also causes relaxation of isolated vascular and nonvascular smooth muscle preparations. The smooth muscle relaxant activity of atrial extract was heat-stable and concentration-dependent and could be destroyed with protease. Rabbit aortic and chick rectum strips were used for the detection of atrial biological activity. The atrial activity was separated by column chromatography into two peaks having apparent molecular weights of 20,000 to 30,000 and less than 10,000. The atrial substance that copurified with the smooth muscle relaxant activity in both peaks caused natriuresis when injected into conscious rats. It appears that atria possess at least two peptides that elicit smooth muscle relaxation and natriuresis, suggesting an endogenous system of fluid volume regulation.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Currie, M G -- Geller, D M -- Cole, B R -- Boylan, J G -- YuSheng, W -- Holmberg, S W -- Needleman, P -- New York, N.Y. -- Science. 1983 Jul 1;221(4605):71-3.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6857267" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Atrial Function ; Chickens ; Chromatography, Gel ; Dogs ; Dose-Response Relationship, Drug ; Humans ; Molecular Weight ; Muscle, Smooth/drug effects ; Muscle, Smooth, Vascular/*drug effects ; Natriuresis/drug effects ; Rabbits ; Rats ; Swine ; Vasodilation/drug effects
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  • 44
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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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  • 45
    Publication Date: 1983-12-23
    Description: Endotoxin-free thymosin fraction 5 elevated corticotropin, beta-endorphin, and cortisol in a dose- and time-dependent fashion when administered intravenously to prepubertal cynomolgus monkeys. Two synthetic component peptides of thymosin fraction 5 had no acute effects on pituitary function, suggesting that some other peptides in thymosin fraction 5 were responsible for its corticotropin-releasing activity. In agreement with these observations, total thymectomy of juvenile macaques was associated with decreases in plasma cortisol, corticotropin, and beta-endorphin. These findings indicate that the prepubertal primate thymus contains corticotropin-releasing activity that may contribute to a physiological immunoregulatory circuit between the developing immunological and pituitary-adrenal systems.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Healy, D L -- Hodgen, G D -- Schulte, H M -- Chrousos, G P -- Loriaux, D L -- Hall, N R -- Goldstein, A L -- CA 24974/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1983 Dec 23;222(4630):1353-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6318312" target="_blank"〉PubMed〈/a〉
    Keywords: Adrenocorticotropic Hormone/*blood ; Animals ; Dose-Response Relationship, Drug ; Endorphins/blood ; Female ; Hydrocortisone/blood ; Kinetics ; Macaca fascicularis ; Thymectomy ; Thymosin/analogs & derivatives/*pharmacology ; Thymus Gland/*physiology ; beta-Endorphin
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  • 46
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1983-03-04
    Description: Efforts in estimating carcinogenic risk in humans from long-term exposure to chemical carcinogens have centered on the problem of low-dose extrapolation. For chemicals with metabolites that interact with DNA, it may be more meaningful to relate tumor response to the concentration of the DNA adducts in the target organ rather than to the applied dose. Many data suggest that the relation between tumor response and concentration of DNA adducts in the target organ may be linear. This implies that the nonlinearities of the dose-response curve for tumor induction may be due to the kinetic processes involved in the formation of carcinogen metabolite--DNA adducts. Of particular importance is the possibility that the kinetic processes may show a nonlinear "hockey-stick" like behavior which results from saturation of detoxification or DNA repair processes. The mathematical models typically used for low-dose extrapolation are shown potentially to overestimate risk by several orders of magnitude when nonlinear kinetics are present.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hoel, D G -- Kaplan, N L -- Anderson, M W -- New York, N.Y. -- Science. 1983 Mar 4;219(4588):1032-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6823565" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Carcinogens/*administration & dosage ; Cell Transformation, Neoplastic/*drug effects ; DNA, Neoplasm/genetics ; Dose-Response Relationship, Drug ; Humans ; Kinetics ; Models, Biological ; Neoplasms/*chemically induced ; Risk
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  • 47
    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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  • 48
    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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  • 49
    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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  • 50
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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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  • 51
    Publication Date: 1984-01-13
    Description: The cytotoxic activity of natural killer cells was investigated in rats subjected to one of two inescapable footshock stress paradigms, both of which induce analgesia, but only one via activation of opioid mechanisms. Splenic natural killer cell activity was suppressed by the opioid, but not the nonopioid, form of stress. This suppression was blocked by the opioid antagonist naltrexone. Similar suppression of natural killer activity was induced by high doses of morphine. These results suggest that endogenous opioid peptides mediate the suppressive effect of certain forms of stress on natural killer cell cytotoxicity.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Shavit, Y -- Lewis, J W -- Terman, G W -- Gale, R P -- Liebeskind, J C -- MH15795/MH/NIMH NIH HHS/ -- NS07628/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 1984 Jan 13;223(4632):188-90.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6691146" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Cytotoxicity, Immunologic/drug effects ; Dose-Response Relationship, Drug ; Endorphins/*physiology ; Female ; Killer Cells, Natural/*immunology ; Morphine/*pharmacology ; Naltrexone/pharmacology ; Rats ; Rats, Inbred F344 ; Stress, Physiological/*immunology
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  • 52
    Publication Date: 1984-06-15
    Description: In an insect, the tobacco hornworm Manduca sexta, the cerebral neuropeptide prothoracicotropic hormone (PTTH), the primary effector of postembryonic development, exists as two molecular forms. These two PTTH's elicit characteristic in vitro dose responses of activation of prothoracic glands from different developmental stages, an indication that during development the glands change in their sensitivity to the neurohormones. Both PTTH's are active in a specific in situ bioassay. Since they may be released in situ at stage-specific times to evoke distinctly different developmental responses, the PTTH neuroendocrine axis appears to be an effective system for determining the functions of molecular forms of a neurohormone in the regulation of growth and development.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Bollenbacher, W E -- Katahira, E J -- O'Brien, M -- Gilbert, L I -- Thomas, M K -- Agui, N -- Baumhover, A H -- AM-30118/AM/NIADDK NIH HHS/ -- AM-31642/AM/NIADDK NIH HHS/ -- NS-18791/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 1984 Jun 15;224(4654):1243-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6732895" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Biological Assay ; Bombyx ; Chromatography, Gel ; Dose-Response Relationship, Drug ; Insect Hormones/pharmacology/*physiology ; Insects/drug effects/growth & development/physiology ; Isoelectric Focusing ; Larva
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  • 53
    Publication Date: 1984-06-22
    Description: Treatment of exponentially growing Chinese hamster ovary cells with bleomycin causes a dose-dependent decrease in cell survival due to DNA damage. This lethal effect can be potentiated by the addition of a nonlethal dose of the anticalmodulin drug N-(4-aminobutyl)-5-chloro-2-naphthalenesulfonamide ( W13 ) but not its inactive analog N-(4-aminobutyl)-2-naphthalenesulfonamide ( W12 ). By preventing the repair of damaged DNA, W13 also inhibits recovery from potentially lethal damage induced by bleomycin. These data suggest a role for calmodulin in the DNA repair pathway.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Chafouleas, J G -- Bolton, W E -- Means, A R -- RR-05425/RR/NCRR NIH HHS/ -- New York, N.Y. -- Science. 1984 Jun 22;224(4655):1346-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6203171" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Bleomycin/*pharmacology ; Calmodulin/*antagonists & inhibitors/*physiology ; Cell Division/drug effects ; Cell Line ; Cell Survival/drug effects ; Cricetinae ; Cricetulus ; DNA Repair/*drug effects ; Dose-Response Relationship, Drug ; Drug Synergism ; Sulfonamides/pharmacology
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  • 54
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1983-05-27
    Description: Amiloride inhibited the ouabain-sensitive rate of oxygen consumption (QO2) of a suspension of rabbit intact proximal tubules in the presence of different concentrations of extracellular sodium. Measurements of the ouabain-sensitive QO2 in the presence of nystatin, the tissue sodium and potassium contents of the tubules in suspension, and the sodium- and potassium-dependent adenosinetriphosphatase (Na,K-ATPase) activity of lysed tubule membranes indicated that the effect of amiloride was due to a direct inhibition of the Na,K-ATPase activity of the proximal tubule.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Soltoff, S P -- Mandel, L J -- AM26816/AM/NIADDK NIH HHS/ -- GM29256/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1983 May 27;220(4600):957-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6302840" target="_blank"〉PubMed〈/a〉
    Keywords: Amiloride/*pharmacology ; Animals ; Dose-Response Relationship, Drug ; Female ; Ion Channels/drug effects ; Kidney Tubules, Proximal/drug effects/*enzymology ; Nystatin/pharmacology ; Ouabain/pharmacology ; Oxygen Consumption/drug effects ; Pyrazines/*pharmacology ; Rabbits ; Rats ; Sodium/metabolism ; Sodium-Potassium-Exchanging ATPase/*antagonists & inhibitors/metabolism
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  • 55
    Publication Date: 1984-05-11
    Description: Arachidonate and other unsaturated long-chain fatty acids were found to activate protein kinase C from human neutrophils. Kinase activation by arachidonate required calcium and was enhanced by diolein but did not require exogenous phosphatidylserine. Submaximal levels of arachidonate also enhanced the affinity of the kinase for calcium during activation by phosphatidylserine. Thus the release of arachidonate, which is triggered in many cell types by ligand-receptor interactions, could play a second messenger role in the regulation of cellular function by activation of protein kinase C.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉McPhail, L C -- Clayton, C C -- Snyderman, R -- 5PO1CA29589/CA/NCI NIH HHS/ -- 5RO-1DEO3738/DE/NIDCR NIH HHS/ -- New York, N.Y. -- Science. 1984 May 11;224(4649):622-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6231726" target="_blank"〉PubMed〈/a〉
    Keywords: Arachidonic Acid ; Arachidonic Acids/pharmacology ; Dose-Response Relationship, Drug ; Enzyme Activation ; Fatty Acids, Unsaturated/pharmacology/*physiology ; Humans ; Kinetics ; Neutrophils/enzymology ; Phosphatidylserines/pharmacology ; Protein Kinase C ; Protein Kinases/*metabolism
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  • 56
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1984-02-03
    Description: The neurotoxin kainic acid caused dose-dependent morphological changes in horizontal cells of the retinas of adult cats and rabbits. High concentrations of kainic acid killed the cells, but when exposed to sublethal doses they contracted their dendritic fields and sent sprouting processes into the inner retina. It appears that kainic acid can induce neuronal growth as well as degeneration and that the potential for morphological plasticity is still present in neurons of the adult mammalian retina.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Peichl, L -- Bolz, J -- New York, N.Y. -- Science. 1984 Feb 3;223(4635):503-4.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6691162" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cats ; Dendrites/ultrastructure ; Dose-Response Relationship, Drug ; Kainic Acid/*pharmacology ; Nerve Degeneration/drug effects ; Neurons/cytology/*drug effects ; Pyrrolidines/*pharmacology ; Rabbits ; Retina/cytology/*drug effects
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  • 57
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1978-07-28
    Description: The presence of polyunsaturated and saturated fatty acids in leukocytic membranes prompted study of their possible role in the induction of brain edema. Polyunsaturated fatty acids including sodium arachidonate, sodium linoleate, sodium linolenate, and docasahexaenoic acids induced edma in slices of rat brain cortex. This cellular edema was specific, since neither saturated fatty acids nor a fatty acid containing a single double bond had such effect.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Chan, P H -- Fishman, R A -- New York, N.Y. -- Science. 1978 Jul 28;201(4353):358-60.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/663662" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Arachidonic Acids ; Brain Edema/*chemically induced ; Cerebral Cortex ; Detergents ; Dose-Response Relationship, Drug ; *Fatty Acids, Unsaturated ; Granulocytes/physiology ; Hydroxy Acids ; In Vitro Techniques ; Prostaglandins ; Rats ; Sodium Dodecyl Sulfate ; Water-Electrolyte Imbalance/chemically induced
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  • 58
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1978-03-17
    Description: Calcium, other divalent cations, and calcium antagonists were tested for their ability to alter ethanol-induced sleeping time, hypothermia, and behavioral intoxication in mice and rats. Calcium given intraventricularly significantly enhanced sleeping time and behavioral intoxication in a dose-related manner. The ionophores X537A and A23187 accentuated the effect of a low dose of calcium, whereas the calcium chelators EDTA and EGTA decreased sleeping time. Calcium also enhanced tertiary butanol- and chloral hydrate-induced sleeping time. The effects of cations on ethanol-induced hypothermia were less significant. The results suggest the existence of a central calcium pool that is involved in ethanol intoxication in rodents.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Erickson, C K -- Tyler, T D -- Harris, R A -- New York, N.Y. -- Science. 1978 Mar 17;199(4334):1219-21.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/343251" target="_blank"〉PubMed〈/a〉
    Keywords: Alcoholic Intoxication/*physiopathology ; Animals ; Body Temperature Regulation/drug effects ; Calcimycin/pharmacology ; Calcium/antagonists & inhibitors/*physiology ; Cations, Divalent ; Dose-Response Relationship, Drug ; Drug Synergism ; Female ; Humans ; Lasalocid/pharmacology ; Male ; Mice ; Movement/drug effects ; Rats
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  • 59
    Publication Date: 1978-04-21
    Description: Single injections of 120 micrograms of methionine-enkephalin were made into various midbrain and forebrain structures in the rat. Analgesia was observed after injections into or near the ventral, caudal midbrain periaqueductal gray matter. Seizures and other pathological electroencephalogram (EEG) changes were seen with injections into or near the forebrain dorsomedial nucleus of the thalamus. No animals with midbrain injection sites showed EEG changes, and none with forebrain injection sites were analgesic. These data, taken together with other lines of evidence, suggest that enkephalin-induced analgesia and enkephalin-induced seizures are mediated by opiate receptors that are located in different brain areas and that are pharmacologically different.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Frenk, H -- McCarty, B C -- Liebeskind, J C -- New York, N.Y. -- Science. 1978 Apr 21;200(4339):335-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/204998" target="_blank"〉PubMed〈/a〉
    Keywords: *Analgesia ; Animals ; Brain/*drug effects ; Cerebral Aqueduct ; Dose-Response Relationship, Drug ; *Endorphins/pharmacology ; *Enkephalins/pharmacology ; Male ; Naloxone/pharmacology ; Rats ; Receptors, Opioid/drug effects ; Seizures/*chemically induced ; Thalamic Nuclei/*drug effects
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  • 60
    Publication Date: 1978-12-08
    Description: When kainic acid, a putative neurotoxin for neurons with glutamatergic input, is injected into the brainstem, it produces a selective pattern of degeneration in the cochlear nucleus. The rate and extent of degeneration is correlated with the distribution of the primary auditory fibers. This evidence supports the hypothesis that glutamate is the neurotransmitter for primary auditory fibers.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Bird, S J -- Gulley, R L -- Wenthold, R J -- Fex, J -- New York, N.Y. -- Science. 1978 Dec 8;202(4372):1087-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/31000" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Brain Stem/*drug effects ; Dose-Response Relationship, Drug ; Glutamates/physiology ; Guinea Pigs ; Kainic Acid/*pharmacology ; Male ; Nerve Degeneration/drug effects ; Neurotransmitter Agents/physiology ; Pyrrolidines/*pharmacology ; Receptors, Neurotransmitter/*drug effects ; Vestibulocochlear Nerve/*drug effects/physiology
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  • 61
    Publication Date: 1978-05-19
    Description: Peripheral administration of the COOH-terminal octapeptide of cholecystokinin in doses from 1 to 100 micrograms per kilogram of body weight (0.25 to 25.0 micrograms per rat) significantly antagonized tail pinch-induced eating in rats, an animal model for stress-induced human hyperphagia. Centrally administered cholecystokinin was effective only in high doses (3 micrograms into the cerebral ventricle). The finding that the minimal effective dose of cholecystokinin in suppressing stress-induced appetitive behavior is smaller after peripheral than central administration suggests that the peptide is acting on peripheral, as opposed to central nervous system, substrates.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Nemeroff, C B -- Osbahr, A J 3rd -- Bissette, G -- Jahnke, G -- Lipton, M A -- Prange, A J -- New York, N.Y. -- Science. 1978 May 19;200(4343):793-4.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/565535" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Behavior, Animal/drug effects ; Bradykinin/pharmacology ; Cholecystokinin/administration & dosage/*pharmacology ; Dose-Response Relationship, Drug ; Feeding Behavior/*drug effects ; Humans ; Male ; Peptide Fragments/pharmacology ; Rats ; Stress, Psychological
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  • 62
    Publication Date: 1978-06-09
    Description: Intracaudate injections of kainic acid destroy striatal neurons containing acetylcholine and gamma-aminobutyric acid but leave dopaminergic nerve terminals in this brain region intact. Rats injected with the drug are aphagic and adipsic, and have other behavioral abnormalities strikingly similar to those seen in animals with lesions in the dopaminergic nigrostriatal bundle.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Pettibone, D J -- Kaufman, N -- Scally, M C -- Meyer, E Jr -- Ulus, I -- Lytle, L D -- New York, N.Y. -- Science. 1978 Jun 9;200(4346):1175-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/653362" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Behavior, Animal/drug effects ; Caudate Nucleus/*drug effects/physiology ; Choline O-Acetyltransferase/metabolism ; Dopamine/metabolism ; Dose-Response Relationship, Drug ; Drinking Behavior/*drug effects ; Feeding Behavior/*drug effects ; Glutamate Decarboxylase/metabolism ; Kainic Acid/*pharmacology ; Male ; Posture ; Pyrrolidines/*pharmacology ; Rats
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  • 63
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1978-10-06
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Maugh, T H 2nd -- New York, N.Y. -- Science. 1978 Oct 6;202(4363):37-41.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/694517" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Biotransformation ; *Carcinogens/metabolism/standards ; Disease Models, Animal ; Dose-Response Relationship, Drug ; Environmental Exposure ; Humans ; Inactivation, Metabolic ; Neoplasms/*chemically induced ; Oxidation-Reduction
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  • 64
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1978-07-07
    Description: The immunosuppressive drug 6-mercaptopurine is embryotoxic in mice. Of the surviving female offspring of mice treated with low doses of 6-mercaptopurine during pregnancy, despite normal body weight and general appearance, many were either sterile or, if they became pregnant, had smaller litters and more dead fetuses as compared to offspring of mothers that had not received the drug.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Reimers, T J -- Sluss, P M -- New York, N.Y. -- Science. 1978 Jul 7;201(4350):65-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/663638" target="_blank"〉PubMed〈/a〉
    Keywords: 6-Mercaptopurine/*pharmacology ; Animals ; Dose-Response Relationship, Drug ; Female ; Fetal Death/*chemically induced ; Fetus/drug effects ; Germ Cells/*drug effects ; Infertility, Female/*chemically induced ; Litter Size/drug effects ; Mice ; Ovary/cytology/drug effects/embryology ; Pregnancy ; Pregnancy, Animal/*drug effects
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  • 65
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1979-02-16
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉New York, N.Y. -- Science. 1979 Feb 16;203(4381):602-3.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/760207" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Carcinogens/administration & dosage ; Dose-Response Relationship, Drug ; Mice ; Mutagens ; Neoplasms, Experimental/chemically induced ; Rats ; Vinyl Chloride/*toxicity ; Vinyl Compounds/*toxicity
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  • 66
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1979-08-17
    Description: Administration of a single oral dose of five phenylphosphonothioate esters produced delayed neurotoxicity in hens; their potency was, in descending order, cyanofenphos, EPN, desbromoleptophos, leptophos, and EPBP (Seven). Histological examination showed that in some hens there was marked axonal and myelin degeneration in the spinal cord and peripheral nerves. The results suggest that delayed neurotoxicity may be a general feature of phenylphosphonothioate insecticides.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Abou-Donia, M B -- New York, N.Y. -- Science. 1979 Aug 17;205(4407):713-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/462181" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Ataxia/chemically induced ; Chickens ; Demyelinating Diseases/chemically induced ; Dose-Response Relationship, Drug ; Female ; Insecticides/*toxicity ; Nerve Degeneration ; *Neurotoxins ; *Organothiophosphorus Compounds ; Time Factors
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  • 67
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1978-05-05
    Description: Eighteen chronic schizophrenic patients received subcutaneous doses of apomorphine, a dopamine receptor agonist, and of placebo in separate trials. A significant improvement in psychotic symptoms occurred after apomorphine compared to placebo. The results are interpreted as a consequence of presynaptic dopamine receptor activation by apomorphine with a subsequent decrease in dopamine-mediated neural transmission.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Tamminga, C A -- Schaffer, M H -- Smith, R C -- Davis, J M -- New York, N.Y. -- Science. 1978 May 5;200(4341):567-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/347574" target="_blank"〉PubMed〈/a〉
    Keywords: Apomorphine/pharmacology/*therapeutic use ; Chronic Disease ; Clinical Trials as Topic ; Dose-Response Relationship, Drug ; Double-Blind Method ; Female ; Humans ; Male ; Nerve Endings/drug effects ; Receptors, Dopamine/drug effects ; Schizophrenia/*drug therapy
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  • 68
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1979-02-09
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Carter, L J -- New York, N.Y. -- Science. 1979 Feb 9;203(4380):525-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/760203" target="_blank"〉PubMed〈/a〉
    Keywords: *Carcinogens ; Dose-Response Relationship, Drug ; Government Agencies ; Humans ; Legislation, Drug ; Neoplasms/*prevention & control ; United States
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  • 69
    Publication Date: 1979-04-20
    Description: Chloroxymorphamine, the 6beta-N,N-bis(2-chloroethyl) derivative of oxymorphone, is a potent nonequilibrium narcotic agonist in the longitudinal muscle preparation of guinea pig ileum. The corresponding naltrexone analog,chlornaltrexamine, is a potent nonequilibrium antagonist of morphine. These receptor sitedirected alkylating agents possess considerable potenial as pharmacologic and biochemical probes of apoid receptors.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Caruso, T P -- Takemori, A E -- Larson, D L -- Portoghese, P S -- New York, N.Y. -- Science. 1979 Apr 20;204(4390):316-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/86208" target="_blank"〉PubMed〈/a〉
    Keywords: *Alkylating Agents ; Animals ; Chlorambucil/pharmacology ; Dose-Response Relationship, Drug ; Drug Synergism ; Guinea Pigs ; Hydromorphone/*analogs & derivatives ; In Vitro Techniques ; Morphine/pharmacology ; Naloxone/pharmacology ; Naltrexone/analogs & derivatives/pharmacology ; Nitrogen Mustard Compounds/*pharmacology ; Norepinephrine/pharmacology ; Oxymorphone/*analogs & derivatives/pharmacology ; Phenoxybenzamine/pharmacology ; Receptors, Opioid/*drug effects
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  • 70
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1979-12-21
    Description: Hepatic hydroxylated metabolites of chlorpromazine (10(-5)M to 10(-4)M), a frequently used phenothiazine tranquilizer, produce solid gel formation with filamentous actin, but the less toxic chlorpromazine sulfoxide metabolite does not. At higher concentrations (5 x 10(-4)M) chlorpromazine inhibits actin polymerization. These dose-response relationships parallel the drug's hepatic toxicity in vivo and suggest that interactions between chloropromazine or chlorpromazine metabolites and actin could be an underlying mechanism of cell injury.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Elias, E -- Boyer, J L -- New York, N.Y. -- Science. 1979 Dec 21;206(4425):1404-6.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/574316" target="_blank"〉PubMed〈/a〉
    Keywords: Actins/*metabolism ; Animals ; Chlorpromazine/*analogs & derivatives/*pharmacology ; Cytoskeleton/drug effects ; Dose-Response Relationship, Drug ; Gels ; Protein Binding/drug effects ; Rabbits ; Viscosity
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  • 71
    Publication Date: 1979-08-10
    Description: Toxaphene, the most widely used chlorinated insecticide, is mutagenic in the Salmonella test without requiring liver homogenate for activity. This insecticide is a complex mixture (more than 177 polychloroterpenes) with carcinogenic activity in rodents. Some but not all of the mutagenic components are easily separated from the insecticidal ingredients.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hooper, N K -- Ames, B N -- Saleh, M A -- Casida, J E -- New York, N.Y. -- Science. 1979 Aug 10;205(4406):591-3.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/377495" target="_blank"〉PubMed〈/a〉
    Keywords: Dose-Response Relationship, Drug ; Insecticides/*pharmacology ; *Mutagens ; Mutation ; Salmonella typhimurium/drug effects ; Toxaphene/*pharmacology
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  • 72
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1979-11-16
    Description: Subcutaneous and intracerebral injections of calcitonin inhibited feeding in rats. The anorectic activity of calcitonin was destroyed by exposing the hormone to heat, trypsin, or hydrogen peroxide. Calcitonin did not produce a conditioned taste aversion to saccharin, and maximum inhibition of feeding occurred 4.5 to 8.3 hours after subcutaneous administration. It is concluded that calcitonin inhibits feeding by acting directly on the central nervous system.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Freed, W J -- Perlow, M J -- Wyatt, R J -- New York, N.Y. -- Science. 1979 Nov 16;206(4420):850-2.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/493987" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Brain/drug effects ; Calcitonin/administration & dosage/*pharmacology ; Depression, Chemical ; Diuresis/drug effects ; Dose-Response Relationship, Drug ; Feeding Behavior/*drug effects ; Injections, Intraventricular ; Rats
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  • 73
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1980-01-18
    Description: In view of similarities between the behavioral, biochemical, and electrophysiological effects of amphetamine and stress, we tested the hypothesis that presentation of a stressor, mild tail pressure, can sensitize an animal to the later effects of amphetamine, and vice versa. Our findings supported this hypothesis and suggest that amphetamine and at least some stressors may be interchangeable in their ability to induce a sensitization. The data raise the possibility that stress might be a common variable contributing to both amphetamine psychosis and some forms of schizophrenia.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Antelman, S M -- Eichler, A J -- Black, C A -- Kocan, D -- New York, N.Y. -- Science. 1980 Jan 18;207(4428):329-31.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7188649" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Behavior, Animal/drug effects/*physiology ; Dextroamphetamine/*pharmacology ; Dopamine/physiology ; Dose-Response Relationship, Drug ; Haloperidol/pharmacology ; Humans ; Male ; Rats ; Schizophrenia/physiopathology ; Stereotyped Behavior/drug effects ; Stress, Physiological/*physiopathology
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  • 74
    Publication Date: 1980-07-25
    Description: Serotonin infused into the lateral ventricle in rats produced a dose-dependent depression of the acoustic startle reflex. When infused onto the spinal cord, serotonin produced a dose-dependent increase in startle. Thus the same neurotransmitter can modulate the same behavior in opposite ways, depending on which part of the central nervous system is involved.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Davis, M -- Strachan, D I -- Kass, E -- New York, N.Y. -- Science. 1980 Jul 25;209(4455):521-3.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7394520" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Dose-Response Relationship, Drug ; Kinetics ; Male ; Rats ; Reflex, Acoustic/*drug effects ; Reflex, Startle/*drug effects ; Serotonin/*pharmacology
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  • 75
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1980-10-10
    Description: Maternal pain thresholds in rats were determined during various stages of pregnancy and parturition by measuring the intensity of electric shock that elicited reflexive jumping. There was a gradual rise in the pain threshold between 16 and 4 days prior to parturition and a more abrupt rise 1 to 2 days before that event. This increase was abolished by long-term administration of the narcotic antagonist naltrexone. The endorphin system is thus an important component of intrinsic mechanisms that modulate responsiveness to aversive stimuli. The data also demonstrate the activation during pregnancy of an endorphin system that is apparently quiescent in nonpregnant female rats treated the same way.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Gintzler, A R -- NIMH GRANT DA01771/DA/NIDA NIH HHS/ -- New York, N.Y. -- Science. 1980 Oct 10;210(4466):193-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7414330" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Dose-Response Relationship, Drug ; Endorphins/antagonists & inhibitors/*physiology ; Female ; Naltrexone/pharmacology ; Pain/*physiopathology ; Pregnancy ; *Pregnancy, Animal ; Rats ; Time Factors
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  • 76
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1980-04-25
    Description: Tumor-promoting phorbol esters stimulated mouse bone marrow cells to form myeloid colonies in agar cultures without added colony-stimulating factors. The colony-stimulating ability of various phorbol esters correlated well with their ability to promote skin tumors in vivo. These results suggest that phorbol esters mimic the action of specific colony-stimulating factors that regulate growth.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Stuart, R K -- Hamilton, J A -- New York, N.Y. -- Science. 1980 Apr 25;208(4442):402-4.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6245446" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cell Division/drug effects ; Cells, Cultured ; *Colony-Forming Units Assay ; Colony-Stimulating Factors/pharmacology ; Dose-Response Relationship, Drug ; Hematopoietic Stem Cells/*drug effects ; Macrophages/physiology ; Mice ; Monocytes/physiology ; Phorbol Esters/pharmacology ; Phorbols/*pharmacology ; Receptors, Cell Surface/drug effects ; Structure-Activity Relationship ; Tetradecanoylphorbol Acetate/*pharmacology
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  • 77
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1981-03-13
    Description: 3-Deazaadenosine, an inhibitor of methylation, increased the frequency of conversion of 3T3-L1 fibroblasts to fat cells in a dose-dependent manner. Once converted, the 3T3-L1 fat cells retained their adipose morphology and accumulated triglycerides even when 3-deazaadenosine was removed from the culture medium. 3-Deazaadenosine may perturb cellular methylation and thereby lead to an increase in the frequency of differentiation of 3T3-L1 fibroblasts to fat cells.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Chiang, P K -- New York, N.Y. -- Science. 1981 Mar 13;211(4487):1164-6.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7466386" target="_blank"〉PubMed〈/a〉
    Keywords: Adipose Tissue/*cytology ; Animals ; Carnitine/pharmacology ; Cell Differentiation/*drug effects ; Cells, Cultured ; Dose-Response Relationship, Drug ; Fibroblasts/cytology ; Methylation ; Mice ; Ribonucleosides/*pharmacology ; Tubercidin/*pharmacology
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  • 78
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1981-11-13
    Description: Circulating metallothionein was measured by radioimmunoassay over a 13-day period in male Sprague-Dawley rats that received a sequence of three intraperitoneal injections (at 3-day intervals) of either 5 milligrams of zinc or 0.8 milligrams of cadmium per kilogram of body weight. These amounts of zinc and cadmium produced metallothionein concentrations in the range of 2 to 5 nanograms per milliliter of serum (zinc) and 2 to 15 nanograms per milliliter of serum (cadmium). In control rats given saline injections over the same period the metallothionein concentration ranged from 1 to 3 nanograms per milliliter of serum.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Garvey, J S -- Chang, C C -- ES 01629/ES/NIEHS NIH HHS/ -- New York, N.Y. -- Science. 1981 Nov 13;214(4522):805-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7292012" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cadmium/*pharmacology ; Dose-Response Relationship, Drug ; Male ; Metalloproteins/*blood ; Metallothionein/*blood/immunology ; Radioimmunoassay ; Rats ; Rats, Inbred Strains ; Zinc/*pharmacology
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  • 79
    Publication Date: 1982-10-29
    Description: Somatostatin perfused in canine pancreases at 10 to 20 picograms per milliliter or 10 to 20 percent of the pancreatic vein somatostatin concentration inhibited insulin and glucagon secretion. This suggests that the high local concentration of endogenous somatostatin is not in contact with somatostatin receptors of the islets. The integrity of this separation may determine the sensitivity of islet cells to circulating somatostatin.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kawai, K -- Ipp, E -- Orci, L -- Perrelet, A -- Unger, R H -- New York, N.Y. -- Science. 1982 Oct 29;218(4571):477-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6126931" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Dogs ; Dose-Response Relationship, Drug ; Glucagon/secretion ; Insulin/secretion ; Intercellular Junctions/physiology ; Islets of Langerhans/*secretion ; Receptors, Cell Surface/physiology ; Receptors, Somatostatin ; Somatostatin/*blood/metabolism
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  • 80
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1982-02-19
    Description: Specific receptors for gonadotropin-releasing hormone (GnRH) in cultured rat pituitary cells were increased by subnanomolar concentrations of GnRH agonists and decreased by high concentrations of these peptides. The antagonist [D-Phe2, Pro3, D-Phe6]GnRH did not alter GnRH binding capacity and blocked the increase in sites induced by GnRH. These findings provide direct evidence for the homologous regulation of GnRH receptors by physiological concentrations of the hypothalamic peptide, an action that could mediate the cyclical and postcastration increases in GnRH receptors and responsiveness of the pituitary gonadotrophs.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Loumaye, E -- Catt, K J -- New York, N.Y. -- Science. 1982 Feb 19;215(4535):983-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6296998" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cells, Cultured ; Dose-Response Relationship, Drug ; Feedback ; Female ; Gonadotropin-Releasing Hormone/analogs & derivatives/metabolism/pharmacology ; Pituitary Gland/secretion ; Pituitary Hormone-Releasing Hormones/*metabolism/pharmacology ; Rats ; Receptors, Cell Surface/*pharmacology ; Receptors, LHRH
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  • 81
    Publication Date: 1982-07-30
    Description: Cysteamine rapidly reduces the concentration of prolactin in pituitary tissue in vivo and in vitro. The effect is dose-dependent, reversible, and cannot be accounted for by prolactin release. Cysteamine does not appear to exert its effect through dopamine receptors and does not alter lactotrope morphology, as determined by electron microscopy.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Millard, W J -- Sagar, S M -- Landis, D M -- Martin, J B -- AM 26252/AM/NIADDK NIH HHS/ -- New York, N.Y. -- Science. 1982 Jul 30;217(4558):452-4.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7089575" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cells, Cultured ; Cysteamine/*pharmacology ; Domperidone/pharmacology ; Dose-Response Relationship, Drug ; Kinetics ; Male ; Pituitary Gland, Anterior/*metabolism ; Prolactin/analysis/*metabolism/secretion ; Rats ; Receptors, Dopamine/physiology ; Spiperone/pharmacology
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  • 82
    Publication Date: 1982-04-23
    Description: A model of "overdose" deaths among heroin addicts is proposed which emphasizes recent findings concerning the contribution of drug-associated environmental cues to drug tolerance. Results of animal experiments performed to evaluate this model suggest that conditioned drug-anticipatory responses, in addition to pharmacological factors, affect heroin-induced mortality.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Siegel, S -- Hinson, R E -- Krank, M D -- McCully, J -- New York, N.Y. -- Science. 1982 Apr 23;216(4544):436-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7200260" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Disease Models, Animal ; Dose-Response Relationship, Drug ; Drug Tolerance ; Environment ; Heroin/*pharmacology ; Humans ; Male ; Rats ; Substance-Related Disorders/*physiopathology
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  • 83
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1982-07-02
    Description: Nine expert drivers operated an instrumented vehicle in tests over a highway at night after being treated with diazepam (5 and 10 milligrams), a placebo, and nothing. They reacted to 10 milligrams of diazepam with increased lateral position variability. Potentially dangerous impairment was inferred from the reactions of some subjects.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉O'Hanlon, J F -- Haak, T W -- Blaauw, G J -- Riemersma, J B -- New York, N.Y. -- Science. 1982 Jul 2;217(4554):79-81.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7089544" target="_blank"〉PubMed〈/a〉
    Keywords: Adult ; *Automobile Driving ; Diazepam/*pharmacology ; Dose-Response Relationship, Drug ; Double-Blind Method ; Functional Laterality ; Humans ; Male ; Motor Activity/*drug effects ; Placebos
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  • 84
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1983-06-03
    Description: Dose-response studies of the inhibition of lipolysis by insulin in isolated human adipocytes were conducted with the use of a sensitive bioluminescent assay of glycerol release. The addition of glucose to the incubation medium was associated with an increase in insulin sensitivity and an increase in the maximum insulin effect. The results suggest that glucose plays an important role in regulating the antilipolytic action of insulin in humans.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Arner, P -- Bolinder, J -- Ostman, J -- New York, N.Y. -- Science. 1983 Jun 3;220(4601):1057-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6342138" target="_blank"〉PubMed〈/a〉
    Keywords: Adipose Tissue/cytology ; Cells, Cultured ; Dose-Response Relationship, Drug ; Drug Synergism ; Glucose/*pharmacology ; Humans ; Insulin/*pharmacology ; Isoproterenol/pharmacology ; Lipolysis/*drug effects
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  • 85
    Publication Date: 1982-04-09
    Description: Maximum expiratory flow rate at 30 percent of vital capacity above residual volume served as an index of airway obstruction in comparing the effects of leukotriene C and histamine administered by aerosol to five normal persons. Leukotriene C was 600 to 9500 times more potent than histamine on a molar basis in producing an equivalent decrement in the residual volume. The leukotriene C response was slow in onset and prolonged, reminiscent of the effects of aerosol allergen challenge in asthmatic allergic subjects.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Weiss, J W -- Drazen, J M -- Coles, N -- McFadden, E R Jr -- Weller, P F -- Corey, E J -- Lewis, R A -- Austen, K F -- AI-00399/AI/NIAID NIH HHS/ -- AI-07722/AI/NIAID NIH HHS/ -- AI-10356/AI/NIAID NIH HHS/ -- New York, N.Y. -- Science. 1982 Apr 9;216(4542):196-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7063880" target="_blank"〉PubMed〈/a〉
    Keywords: Adult ; Airway Resistance/*drug effects ; Bronchi/*drug effects ; Dose-Response Relationship, Drug ; Female ; Histamine/pharmacology ; Humans ; Male ; Middle Aged ; Prostaglandins F/pharmacology ; SRS-A/*pharmacology ; Time Factors
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  • 86
    Publication Date: 1983-09-23
    Description: A peptide that accumulated as the major product during the proteolysis of arginine vasopressin by rat brain synaptic membranes was isolated and its structure was shown to be the hexapeptide pGlu-Asn-Cys(Cys)-Pro-Arg-Gly-NH2. When administered intracerebroventricularly in extremely low doses, this vasopressin fragment and its desglycinamide derivative facilitated memory consolidation in a passive avoidance situation. These vasopressin metabolites, which are devoid of pressor activity, constitute highly potent neuropeptides with selective effects on memory and related processes; they are activated via proteolytic processing of vasopressin by brain peptidases.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Burbach, J P -- Kovacs, G L -- de Wied, D -- van Nispen, J W -- Greven, H M -- New York, N.Y. -- Science. 1983 Sep 23;221(4617):1310-2.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6351252" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Arginine Vasopressin/*metabolism/physiology ; Avoidance Learning/physiology ; Brain/*metabolism ; Dose-Response Relationship, Drug ; Male ; Memory/*physiology ; Oligopeptides/metabolism ; Peptide Hydrolases/metabolism ; Rats ; Structure-Activity Relationship
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  • 87
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1983-12-16
    Description: The mouse neuroblastoma-rat glioma hybrid cell line NG108-15 was used to study the acute and chronic interaction of ethanol with intact neural cells. In the short term, ethanol inhibited opiate receptor binding, but after long-term exposure the cells exhibited an apparent adaptive increase in the number of opiate binding sites; this was reversible when ethanol was withdrawn. High concentrations of ethanol (200 mM) increased opiate binding after 18 to 24 hours, whereas lower concentrations (25 to 50 mM) produced similar changes after 2 weeks. This model system has potential for exploring the cellular and molecular mechanisms underlying ethanol intoxication, tolerance, and withdrawal.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Charness, M E -- Gordon, A S -- Diamond, I -- New York, N.Y. -- Science. 1983 Dec 16;222(4629):1246-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6316506" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cell Line ; Dose-Response Relationship, Drug ; Enkephalin, Methionine/analogs & derivatives/metabolism ; Ethanol/*pharmacology ; Glioma ; Hybrid Cells ; Mice ; Neuroblastoma ; Neurons/*drug effects/metabolism ; Rats ; Receptors, Opioid/*drug effects/metabolism ; Time Factors
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  • 88
    Publication Date: 1983-10-21
    Description: Fluoride is one of the most potent but least well understood stimulators of bone formation in vivo. Bone formation was shown to arise from direct effects on bone cells. Treatment with sodium fluoride increased proliferation and alkaline phosphatase activity of bone cells in vitro and increased bone formation in embryonic calvaria at concentrations that stimulate bone formation in vivo.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Farley, J R -- Wergedal, J E -- Baylink, D J -- AM31061/AM/NIADDK NIH HHS/ -- AM31062/AM/NIADDK NIH HHS/ -- New York, N.Y. -- Science. 1983 Oct 21;222(4621):330-2.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6623079" target="_blank"〉PubMed〈/a〉
    Keywords: Alkaline Phosphatase/*metabolism ; Animals ; Bone Development/*drug effects ; Bone and Bones/*cytology/embryology/enzymology ; Cell Division/drug effects ; Cells, Cultured ; Chick Embryo ; Dose-Response Relationship, Drug ; Fluorides/*pharmacology ; Parathyroid Hormone/pharmacology
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  • 89
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1983-04-01
    Description: The terrestrial snail Cepaea nemoralis, when placed on a 40 degrees C hot plate, lifts the anterior portion of its foot. The latency of this response is influenced by morphine and by naloxone in a dose-dependent and time-dependent manner. Morphine increases the time taken to respond, whereas naloxone reduces it. Furthermore, naloxone abolishes the effect of morphine. These results indicate that an opiate system may have a role in this behavior, which resembles that reported in vertebrates.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kavaliers, M -- Hirst, M -- Teskey, G C -- New York, N.Y. -- Science. 1983 Apr 1;220(4592):99-101.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6298941" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Behavior, Animal/drug effects/*physiology ; Dose-Response Relationship, Drug ; Hot Temperature ; Morphine/pharmacology ; Naloxone/pharmacology ; Receptors, Opioid/drug effects/*physiology ; Snails/*physiology ; Thermoreceptors/physiology
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  • 90
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1983-09-09
    Description: Peptidergic-noradrenergic interactions were examined in explants of rat sympathetic superior cervical ganglia and in cultures of dissociated cells. The putative peptide transmitters substance P and somatostatin each increased the activity of the catecholamine-synthesizing enzyme tyrosine hydroxylase after 1 week of exposure in culture. Maximal increases occurred at 10(-7) molar for each peptide, and either increasing or decreasing the concentration reduced the effects. Similar increases in tyrosine hydroxylase were produced by a metabolically stable agonist of substance P, while a substance P antagonist prevented the effects of the agonist. The data suggest that the increased tyrosine hydroxylase activity was mediated by peptide interaction with specific substance P receptors and that peptides may modulate sympathetic catecholaminergic function.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kessler, J A -- Adler, J E -- Black, I B -- New York, N.Y. -- Science. 1983 Sep 9;221(4615):1059-61.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6192502" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Bacitracin/pharmacology ; Captopril/pharmacology ; Cells, Cultured ; Culture Techniques ; Dose-Response Relationship, Drug ; Ganglia, Sympathetic/*enzymology ; Rats ; Somatostatin/*pharmacology ; Substance P/*pharmacology ; Tyrosine 3-Monooxygenase/*metabolism
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  • 91
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1983-04-29
    Description: Compared to nonpregnant controls, pregnant mice injected with phenobarbital had lower concentrations of the drug in the plasma but equivalent concentrations in the brain. In spite of the similar concentrations in the brain, the behavioral response to phenobarbital was greater for pregnant than nonpregnant mice. These results suggest that the concentration of phenobarbital in the plasma, which is commonly used as a basis for adjusting phenobarbital dosage during pregnancy, is not an appropriate indicator of the dynamics of the drug.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Middaugh, L D -- Zemp, J W -- Boggan, W O -- AA03532/AA/NIAAA NIH HHS/ -- DA00041/DA/NIDA NIH HHS/ -- DA01750/DA/NIDA NIH HHS/ -- New York, N.Y. -- Science. 1983 Apr 29;220(4596):534-6.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6836299" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Brain Chemistry ; Dose-Response Relationship, Drug ; Female ; Humans ; Mice ; Mice, Inbred C57BL ; Motor Activity/drug effects ; Phenobarbital/analysis/*metabolism/pharmacology ; *Pregnancy/drug effects ; Time Factors
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  • 92
    Publication Date: 1983-07-08
    Description: Centrally administered alpha-melanocyte stimulating hormone is much more potent in reducing fever than the widely used antipyretic acetaminophen. This finding supports the hypothesis that the endogenous neuropeptide has a role in the limitation of fever and suggests that it may be clinically useful as an antipyretic.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Murphy, M T -- Richards, D B -- Lipton, J M -- NS 10046/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 1983 Jul 8;221(4606):192-3.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6602381" target="_blank"〉PubMed〈/a〉
    Keywords: Acetaminophen/pharmacology ; Animals ; Anti-Inflammatory Agents, Non-Steroidal/*pharmacology ; Body Temperature/drug effects ; Dose-Response Relationship, Drug ; Fever/drug therapy ; Humans ; Melanocyte-Stimulating Hormones/*pharmacology ; Rabbits
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  • 93
    Publication Date: 1981-06-12
    Description: Somatomedin-C stimulates somatostatin release to a maximum of 390 percent of basal release during short-term (20-minute) incubation of rat hypothalamus. It has no effect on basal or stimulated growth hormone release from primary cultures of rat adenohypophyseal cells during a 4-hour incubation, but inhibits stimulated release by more that 90 percent after 24 hours. These findings suggest that somatomedin-C participates in the growth hormone negative feedback loop with an immediate effect on hypothalamic somatostatin and a delayed effect on the anterior pituitary.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Berelowitz, M -- Szabo, M -- Frohman, L A -- Firestone, S -- Chu, L -- Hintz, R L -- AM 18722/AM/NIADDK NIH HHS/ -- AM 24085/AM/NIADDK NIH HHS/ -- New York, N.Y. -- Science. 1981 Jun 12;212(4500):1279-81.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6262917" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Bucladesine/pharmacology ; Cells, Cultured ; Dose-Response Relationship, Drug ; Feedback ; Growth Hormone/pharmacology/*secretion ; Hypothalamus/drug effects/*physiology ; Insulin-Like Growth Factor I ; Kinetics ; Pituitary Gland, Anterior/drug effects/*secretion ; Rats ; Somatomedins/*pharmacology
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  • 94
    Publication Date: 1981-02-13
    Description: Inosine, 2-deoxyinosine, and 2-deoxyguanosine completely reversed the increase in exploratory activity elicited in mice by diazepam. The inhibition of exploratory behavior by purines occurred at doses that when given alone have no effect on exploratory behavior. 7-Methylinosine, which does not bind to the brain benzodiazepine binding site in vitro, had no effect on the diazepam-induced increase in exploratory behavior. Behavioral effects produced by various combinations of inosine and diazepam indicate that the interaction between purine and benzodiazepine is antagonistic and support the hypothesis that the naturally occurring purines function in anxiety-related behaviors that respond to benzodiazepine treatment.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Crawley, J N -- Marangos, P J -- Paul, S M -- Skolnick, P -- Goodwin, F K -- New York, N.Y. -- Science. 1981 Feb 13;211(4483):725-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6256859" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Anxiety/*drug effects ; Behavior, Animal/drug effects ; Diazepam/*antagonists & inhibitors ; Dose-Response Relationship, Drug ; Humans ; Inosine/*pharmacology ; Male ; Mice ; Receptors, Drug/*drug effects ; Receptors, GABA-A
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  • 95
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1981-07-17
    Description: Systemic administration of the neuroleptic drug alpha-flupenthixol attenuated lever-pressing behavior in rats responding for rewarding brain stimulation. The magnitude of this attenuation was dose-dependent and resembled the effects of reward reduction and termination. However, when the operant response requirements of the same rats were changed to nose poking, identical drug treatments produced relatively little attenuation in performance. These data do not support the belief that neuroleptics produce a general state of anhedonia. Rather, the apparent suppression of reinforced behaviors depends at least in part on the kinetic requirements of the response.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Ettenberg, A -- Koob, G F -- Bloom, F E -- New York, N.Y. -- Science. 1981 Jul 17;213(4505):357-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7244622" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Brain/physiology ; Conditioning (Psychology)/*drug effects ; Dose-Response Relationship, Drug ; Electroshock ; Flupenthixol/*pharmacology ; Male ; Rats ; *Reward ; Thioxanthenes/*pharmacology
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  • 96
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1981-01-23
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lappe, M -- Hooper, K -- Blake, E -- Pfund, N -- Gardner, E -- Rosenberg, J -- New York, N.Y. -- Science. 1981 Jan 23;211(4480):332-4.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7221543" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Biological Assay ; *Carcinogens ; Dose-Response Relationship, Drug ; Humans ; Species Specificity
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  • 97
    Publication Date: 1981-05-22
    Description: This study suggests one mechanism by which alveolar macrophages accumulate in the lung in pulmonary emphysema: elastin fragments generated at the diseased sites are potent chemoattractants for monocytes, the precursors of the macrophages. The most chemotactic elastin fragments have a molecular weight between 10,000 and 50,000 and are active at concentrations as low as 3 nanograms per milliliter. By comparison, elastin fragments with higher molecular weights and desmosines are active at concentrations greater than 0.3 microgram per milliliter. In addition, preincubation of monocytes with the 10,000- to 50,000-dalton elastin impairs the ability of the cells to migrate toward elastin fragments but not toward activated serum. Fragments of tropoelastin are not chemotactic for monocytes. Because elastin, but not tropoelastin, contains lysyl-derived cross-links, these structures may be the active chemotactic site on the elastin fragments.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hunninghake, G W -- Davidson, J M -- Rennard, S -- Szapiel, S -- Gadek, J E -- Crystal, R G -- New York, N.Y. -- Science. 1981 May 22;212(4497):925-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7233186" target="_blank"〉PubMed〈/a〉
    Keywords: Cells, Cultured ; Chemotaxis, Leukocyte/*drug effects ; Dose-Response Relationship, Drug ; Elastin/*analogs & derivatives/*pharmacology ; Humans ; Macrophages/physiology ; Monocytes/*physiology ; Peptide Fragments/pharmacology ; Pulmonary Emphysema/*physiopathology ; Structure-Activity Relationship ; Tropoelastin/*pharmacology
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 98
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1981-02-20
    Description: A National Research Council report has recommended practices for safe handling and disposal of hazardous chemicals in laboratories. They are a practical alternative to detailed regulations on individual chemicals.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉McKusick, B C -- New York, N.Y. -- Science. 1981 Feb 20;211(4484):777-80.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7466359" target="_blank"〉PubMed〈/a〉
    Keywords: Air Pollutants, Occupational/adverse effects ; Dose-Response Relationship, Drug ; Explosions/prevention & control ; Laboratories/*standards ; *Occupational Medicine ; Research ; Ventilation
    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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  • 99
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    Unknown
    American Association for the Advancement of Science (AAAS)
    Publication Date: 1981-11-20
    Description: The nature and extent of positive evidence associated with animal carcinogens vary widely, yet present regulatory policy does not permit adequate discrimination among the many carcinogenic substances. Most are treated as if they pose equal potential risk to humans, and this is not consistent with the available data. Without knowledge of carcinogenic mechanisms, the evaluation of responses in intact mammalian surrogates best reflects the potential levels of human risk. An example of a scoring system is proposed by which animal carcinogens are ranked according to the most relevant toxicological evidence derived from animal and genotoxicity studies. Different classes of animal carcinogens could thus be recognized and would permit several regulatory options and provide a means to establish priorities for public and scientific concerns.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Squire, R A -- New York, N.Y. -- Science. 1981 Nov 20;214(4523):877-80.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7302565" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Carcinogens/toxicity ; Dose-Response Relationship, Drug ; Drug Evaluation, Preclinical/*methods ; Humans ; Neoplasms/chemically induced ; Neoplasms, Experimental/*chemically induced ; Risk
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 100
    Publication Date: 1981-11-06
    Description: Thyrotropin-releasing hormone was microinjected into the dorsal hippocampus of ground squirrels (Citellus lateralis) when they were at different levels of arousal, as assessed by electrophysiological and behavioral criteria. When administered to the awake animal, thyrotropin-releasing hormone produced dose-dependent decreases in body temperature accompanied by behavioral quieting and reductions in metabolic rate and electromyographic activity. The magnitude of these effects was greater when the peptide was microinjected during a period of behavioral activation. In contrast, administration of the peptide during slow wave sleep produced increased thermogenesis, an increase in electromyographic activity, and an increase in the amount of electroencephalographic desynchronization.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Stanton, T L -- Bechman, A L -- Winokur, A -- New York, N.Y. -- Science. 1981 Nov 6;214(4521):678-81.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6794147" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Arousal/*drug effects ; Body Temperature Regulation/*drug effects ; Dose-Response Relationship, Drug ; Female ; Hippocampus/*drug effects ; Male ; Sciuridae/*physiology ; Thyrotropin-Releasing Hormone/*pharmacology ; Wakefulness/drug effects
    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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