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71.
TC Wright RD Moscarelli P Dole TV Ellerbrock MA Chiasson N Vandevanter 《Canadian Metallurgical Quarterly》1996,87(4):515-519
This study examined the cross over between alcoholics and habitual gamblers. A group of Alcoholics Anonymous members (n = 30) and a group of pathological gamblers (Gamblers Anonymous members) (n = 23) and self-identified habitual gamblers (n = 21) were asked to respond to two inventories--the South Oaks Gambling Screen (SOGS, Lesieur & Blume, 1987) and the Substance Abuse Subtle Screening Inventory (SASSI-2, Miller, 1994). Results of our analyses suggested there were not significant degrees of cross over. 相似文献
72.
The kinetics of o-cresol oxidation with ozone in acetic anhydride was studied. It was shown that o-cresol was acylated in acetic anhydride to give o-cresyl acetate. Ozone attacks the C=C bonds of the aromatic ring of o-cresyl acetate to give unsaturated peroxide compounds. The composition of the oxidation products alters when the ozonation is carried out in the presence of catalytic amounts of sulfuric acid. Along with the products of the destructive oxidation of the aromatic ring, the methyl group oxidation products appeared as the acyl derivatives o-acetoxybenzyl alcohol and o-acetoxybenzaldehyde, a form that is more stable toward the action of ozone (10%). The addition of manganese(II) acetate to the reaction mixture increases the methyl group oxidation selectivity to 75%. The mechanism of the ozone reaction with o-cresol in acetic anhydride that explains the obtained results is discussed. 相似文献
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本文从以下七个方面阐述了灯光在电视节目创作中的作用和地位。1.观众注意力的引导;2. 画面特点;3.画面形象的空间、主体、比例和透视关系;4.画面形象的形态、轮廓和体积的表现;5. 画面构图和影调的关系;6.画面的影调平衡和视觉连续性;7.光的造型。 相似文献
76.
The effect of serotonin antibodies on the development of the alcohol abstinence syndrome in CBA mice
VA Evseev TV Davydova VG Fomina LA Vetrilé KD Pletsity? 《Canadian Metallurgical Quarterly》1993,116(12):582-584
Experiments on CBA mice with alcohol withdrawal syndrome showed a reduction of abstinence after injection of serotonin antibodies in dose 5 and 10 mg intraperitoneally. One more result was a decrease of horizontal locomotory activity after injection of 5 mg of serotonin antibodies to mice with 24 hour withdrawal syndrome. 相似文献
77.
The regulation of plasma lecithin:cholesterol acyltransferase (LCAT) expression is not well understood. Although oleic acid increases both the secretion of triglycerides and LCAT by primary rat hepatocytes, the effect of other fatty acids (FA) on LCAT secretion is not known. This study was designed to examine the effect of FA on the hepatic secretion of LCAT, triglyceride and apolipoprotein A-1 (apoA-1). Primary rat hepatocytes were incubated with serum-free medium, supplemented with individual FA (0-1 mmol/L) for 22-24 h. Preliminary studies indicated a linear secretion of LCAT up to 24 h in both control and FA-treated cells. When hepatocytes were incubated with 1 mmol/L FA, the LCAT secretion increased 50-100% (P < 0.01) in the presence of the 18-carbon FA (stearic, oleic, elaidic and linoleic acids), whereas the presence of butyric, lauric and palmitic acids had no significant effect. LCAT secretion decreased (P < 0.01) in the presence of docosahexaenoic acid (DHA). All FA (except DHA) significantly enhanced triglyceride secretion; however, only the 18 carbon FA significantly stimulated the synthesis and secretion of apoA-1 and secretion of LCAT. The secretion of LCAT correlated with apoA-1 secretion (r = 0.88, P = 0.004) but not with triglyceride secretion (r = 0.55, P = 0.12). Treatment with oleic acid resulted in a 1.5-fold increase in hepatocyte LCAT mRNA accumulation, whereas butyrate and palmitate had no effect. These data indicate that FA that promote the apparent synthesis and secretion of apoA-1 also stimulate the secretion of LCAT in vitro, suggesting a coordinate regulatory mechanism for apoA-1 and LCAT expression. 相似文献
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CJ Frazier YD Rollins CR Breese S Leonard R Freedman TV Dunwiddie 《Canadian Metallurgical Quarterly》1998,18(4):1187-1195
The effects of acetylcholine on both pyramidal neurons and interneurons in the area CA1 of the rat hippocampus were examined, using intracellular recording techniques in an in vitro slice preparation. In current-clamp mode, fast local application of acetylcholine (ACh) to the soma of inhibitory interneurons in stratum radiatum resulted in depolarization and rapid firing of action potentials. Under voltage-clamp, ACh produced fast, rapidly desensitizing inward currents that were insensitive to atropine but that were blocked by nanomolar concentrations of the nicotinic alpha7 receptor-selective antagonists alpha-bungarotoxin (alphaBgTx) and methyllycaconitine. Nicotinic receptor antagonists that are not selective for alpha7-containing receptors had little (mecamylamine) or no effect (dihydro-beta-erythroidine) on the ACh-induced currents. Glutamate receptor antagonists had no effect on the ACh-evoked response, indicating that the current was not mediated by presynaptic facilitation of glutamate release. However, the current could be desensitized almost completely by bath superfusion with 100 nM nicotine. In contrast to those actions on interneurons, application of ACh to the soma of CA1 pyramidal cells did not produce a detectable current. Radioligand-binding experiments with [125I]-alphaBgTx demonstrated that stratum radiatum interneurons express alpha7-containing nAChRs, and in situ hybridization revealed significant amounts of alpha7 mRNA. CA1 pyramidal cells did not show specific binding of [125I]-alphaBgTx and only low levels of alpha7 mRNA. These results suggest that, in addition to their proposed presynaptic role in modulating transmitter release, alpha7-containing nAChRs also may play a postsynaptic role in the excitation of hippocampal interneurons. By desensitizing these receptors, nicotine may disrupt this action and indirectly excite pyramidal neurons by reducing GABAergic inhibition. 相似文献
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