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  • Structure-Activity Relationship  (5)
  • Rabbits
  • American Association for the Advancement of Science (AAAS)  (7)
  • American Chemical Society
  • 1980-1984
  • 1975-1979  (7)
  • 1978  (7)
Collection
Keywords
Publisher
  • American Association for the Advancement of Science (AAAS)  (7)
  • American Chemical Society
Years
  • 1980-1984
  • 1975-1979  (7)
Year
  • 1
    Publication Date: 1978-01-13
    Description: Tricyclic antidepressants vary in their capacity to cause psychomotor activation, to relieve agitated depressive states, and to cause sedation and hypotension. We have quantified relative potencies of tricyclic antidepressants in competing for the binding of 3H-labeled WB-4101 to alpha-noradrenergic receptor sites in rat brain membranes. Affinities of tricyclic drugs for alpha-noradrenergic receptor sites in the brain correlate well with the capacity of these agents to relieve psychomotor agitation and to induce sedation and hypotension; these affinities also correlate inversely with tendencies to elicit psychomotor activation.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉U'Prichard, D C -- Greenberg, D A -- Sheehan, P P -- Snyder, S H -- New York, N.Y. -- Science. 1978 Jan 13;199(4325):197-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/202024" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antidepressive Agents, Tricyclic/*metabolism/therapeutic use ; Binding, Competitive ; Brain/*metabolism ; Humans ; Hypotension/chemically induced ; Psychomotor Agitation/*drug therapy ; Rats ; Receptors, Adrenergic/*metabolism ; Receptors, Adrenergic, alpha/*metabolism ; Structure-Activity Relationship
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 2
    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
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 3
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1978-01-13
    Description: Androgen formation (3beta-hydroxysteroid dehydrogenase activity) was detectable in the rabbit blastocyst on day 5 of gestation (before implantation); estrogen formation was first detectable on day 7. The capacity to form estrogen on the day of implantation suggests that estrogen formation in the blastocyst may play a role in the implantation process.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉George, F W -- Wilson, J D -- New York, N.Y. -- Science. 1978 Jan 13;199(4325):200-1.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/579477" target="_blank"〉PubMed〈/a〉
    Keywords: 3-Hydroxysteroid Dehydrogenases/*metabolism ; Androgens/biosynthesis ; Animals ; Blastocyst/*metabolism ; *Embryo Implantation ; Embryonic Development ; Estradiol/*biosynthesis ; Female ; Gestational Age ; Pregnancy ; Rabbits
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 4
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    Unknown
    American Association for the Advancement of Science (AAAS)
    Publication Date: 1978-06-16
    Description: Samples of spontaneous electroencephalographic (EEG) activity from the dorsal hippocampus of rabbits were recorded immediately before classical conditioning of the nictitating membrane response. Computer analysis revealed a significant predictive relationship between EEG frequency characteristics and the subsequent rate of learning.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Berry, S D -- Thompson, R F -- New York, N.Y. -- Science. 1978 Jun 16;200(4347):1298-300.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/663612" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Behavior, Animal/physiology ; Conditioning, Classical/*physiology ; *Electroencephalography ; Hippocampus/*physiology ; Rabbits
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 5
    Publication Date: 1978-05-19
    Description: A flame retardant used in children's sleepwear, tris-(1,3-dichloro-2-propyl)phosphate (Fyrol FR2) is a mutagen in the Salmonella-mammalian tissue homogenate test after it has been activated by mouse or rat liver homogenate. The expected enzymatic hydrolysis product, 1,3-dichloro-2-propanol, is similarly a mutagen after activation by liver homogenate. A proposed metabolite of the flame retardant, 1,3-dichloro-2-propanone, is a potent mutagen in the absence of such activation. A flame retardant with similar structure, tris-(2,3-dibromopropyl)phosphate (tris-BP), was shown previously to be a mutagen, to cause sterility in animals, to be a carcinogen, and to be absorbed through human skin. These and other flame retardants have characteristic nuclear magnetic resonance spectra that can be used to determine which flame retardant is present in commercially purchased sleepwear. Sleepwear treated with tris-BP, Fyrol FR2, and other chemical additives was being sold in late 1977.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Gold, M D -- Blum, A -- Ames, B N -- New York, N.Y. -- Science. 1978 May 19;200(4343):785-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/347576" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Biotransformation ; Flame Retardants/*toxicity ; Hydrocarbons, Chlorinated/toxicity ; Liver/metabolism ; Mice ; *Mutagens ; Organophosphorus Compounds/*toxicity ; Salmonella typhimurium/drug effects ; Structure-Activity Relationship
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 6
    Publication Date: 1978-04-28
    Description: Succinyl derivatives of gramicidin were tested for their ability to form channels in planar artificial lipid bilayers. Both N-succinyldeformylgramicidin methyl ester and charged O-succinylgramicidin formed channels, but the channels had markedly different sizes and lifetimes. This implies that gramicidin forms channels by end-to-end association. However, the doubly charged N,O-bissuccinyldeformylgramicidin was inactive, which suggests that only end-to-end association of gramicidin may result in channel formation.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Bradley, R J -- Urry, D W -- Okamoto, K -- Rapaka, R -- New York, N.Y. -- Science. 1978 Apr 28;200(4340):435-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/77040" target="_blank"〉PubMed〈/a〉
    Keywords: Electric Conductivity ; *Gramicidin ; Hydrogen Bonding ; Ionophores ; Membranes, Artificial ; Protein Conformation ; Structure-Activity Relationship
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 7
    Publication Date: 1978-03-17
    Description: The conformation of [Leu5]enkephalin is produced by a Tyr-Gly-Gly-Phe beta bend stabilized by antiparallel hydrogen bonding between tyrosine and phenylalanine. On the basis of a comparison of the observed structure with the structure of known opiate agonists, three hydrophilic and two hydrophobic regions have been identified as contributing to the recognition of the molecule at the opiate receptor site.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Smith, D -- Griffin, J F -- New York, N.Y. -- Science. 1978 Mar 17;199(4334):1214-6.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/204006" target="_blank"〉PubMed〈/a〉
    Keywords: *Endorphins/metabolism ; *Enkephalins/metabolism ; Hydrogen Bonding ; Models, Molecular ; Morphine ; Protein Conformation ; Receptors, Opioid/metabolism ; Structure-Activity Relationship ; X-Ray Diffraction
    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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