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  • 1
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    Thyrotropin-releasing hormone effects in the central nervous system: dependence on arousal state (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    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
    Published by American Association for the Advancement of Science (AAAS)
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  • 2
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    Physical dependence on morphine fails to develop during the hibernating state (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1981-06-26
    Description: Physical dependence on morphine occurs in a typical fashion during the active state of the mammalian hibernator Citellus lateralis, but does not occur when morphine exposure is confined to the hibernating state. Morphine exposure during hibernation can produce stereotyped behavior, thus demonstrating partial responsiveness of the central nervous system to opioids during this natural state.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Beckman, A L -- Llados-Eckman, C -- Stanton, T L -- Adler, M W -- DA-02254/DA/NIDA NIH HHS/ -- New York, N.Y. -- Science. 1981 Jun 26;212(4502):1527-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7233241" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Blood-Brain Barrier ; Female ; Hibernation/*drug effects ; Humans ; Male ; Morphine/*pharmacology ; Naloxone/pharmacology ; Sciuridae ; Substance-Related Disorders
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 3
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    Direct measurements of DOCO isomers in the kinetics of OD + CO (2018)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2018-01-13
    Description: Quantitative and mechanistically detailed kinetics of the reaction of hydroxyl radical (OH) with carbon monoxide (CO) have been a longstanding goal of contemporary chemical kinetics. This fundamental prototype reaction plays an important role in atmospheric and combustion chemistry, motivating studies for accurate determination of the reaction rate coefficient and its pressure and temperature dependence at thermal reaction conditions. This intricate dependence can be traced directly to details of the underlying dynamics (formation, isomerization, and dissociation) involving the reactive intermediates cis - and trans -HOCO, which can only be observed transiently. Using time-resolved frequency comb spectroscopy, comprehensive mechanistic elucidation of the kinetics of the isotopic analog deuteroxyl radical (OD) with CO has been realized. By monitoring the concentrations of reactants, intermediates, and products in real time, the branching and isomerization kinetics and absolute yields of all species in the OD + CO reaction are quantified as a function of pressure and collision partner.
    Electronic ISSN: 2375-2548
    Topics: Natural Sciences in General
    Published by American Association for the Advancement of Science (AAAS)
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