Substitution of the 5-HT1 agonist trifluoromethylphenylpiperazine (TFMPP) for the discriminative stimulus effects of ethanol: effect of training dose

The role of the ethanol training dose on the ability of the selective 5-HT¹ agonist TFMPP (m-trifluoromethylphenylpiperazine) to produce ethanol-like discriminative stimulus effects was evaluated in three groups of rats trained to discriminate 1.0 g/kg (n=5), 1.5 g/kg (n=6) or 2.0 g/kg (n=7) ethanol (IG) from water using a two-lever procedure with food reinforcement available under a fixed ratio 20 (FR 20) schedule. Ethanol generalization gradients were comparable in the three groups, indicating few potency differences in the ethanol stimulus across training dose. However, the ability of TFMPP (0.1–1.7 mg/kg; IP) to substitute for ethanol was dependent on the training dose. TFMPP resulted in partial substitution in the 1.0 g/kg group, complete substitution for 1.5 g/kg group and no substitution in the 2.0 g/kg ethanol training group. The results indicate a serotonergic component to the discriminative stimulus effects of an intermediate dose of ethanol that is not prominent as the dose of ethanol is raised. These data add further support for the hypothesis that ethanol produces a mixed discriminative cue, the components of which are not uniformly amplified when the dose of ethanol is increased.     

Divided attention performance in cannabis users and non-users following alcohol and cannabis separately and in combination

The effect of 9-tetrahydrocannabinol ( 9-THC) and alcohol, singly and in combination, on divided attention performance was investigated in cannabis users and non-users who were matched for alcohol use. Both cannabis and alcohol produced decrements in central and peripheral signal detections. Drug and alcohol effects were greater for signal presentations in the periphery. Cannabis users were less impaired in peripheral signal detection than non-users while intoxicated by cannabis and/or alcohol. These findings suggest the development of tolerance and cross-tolerance in regular cannabis users and/or the ability to compensate for intoxication effects.     

国内六地区饮酒情况及相关问题调查 Ⅲ.四种特殊职业人群饮酒情况及相关问题

目的：描述我国六地区四种特殊职业人群的饮酒情况及与饮酒相关问题发生率，并与普通人群相比较。方法：抽样调查，使用定式问卷及ＤＳＭ－ＩＩ－Ｒ诊断标准向９８００名受试者（１８－６５岁）调查饮酒情况、饮酒相关的社会、心理和躯体问题。结果：男女及总饮酒率分别为８６．２％、４４．１％和７４．１％，年平均饮酒量分别为８．２５、０．５６及６．００升纯酒精。酒依赖的男性、女性和总的时点患病率分别为１０．５４５％、０．１４１％和７．５６１％，急性酒中毒的半年患病率分别为７．９１６％、０．０７１％和５．６６８％。与普通人群相比，四种特殊职业人群的饮酒率、年饮酒量和与饮酒相关的损害均较高。结论：职业环境是影响饮酒的重要因素之一，处于特殊环境的人群是出现酒问题的高危人群。     

Alcohol and the Psychophysiological Detection of Deception

Psychophysiological detection of deception examinations were conducted on 40 subjects. Of these, 32 were “guilty” of a mock crime and 8 were innocent. Sixteen guilty subjects committed the crime while intoxicated and the remaining 16 committed the crime sober. These two groups of guilty subjects were subdivided such that half of each group was examined with the polygraph while intoxicated and the other half was examined while sober. Two questioning techniques were used in the examination, a Control Question Test and the Guilty Knowledge Test. Measures of skin resistance, heart rate and respiration were recorded. The principal findings were that alcohol intoxication during the crime reduced detectability with detection scores derived from the measurement of skin resistance responses on the Control Question Test and on the Guilty Knowledge Test. The analyses of guilt/innocent classifications, based on the detection scores, showed these classifications to be affected by alcohol intoxication.     

新鲜组织块标本经乙醇直接固定二年的流式细胞术DNA分析

本文报道了一种实体组织用于DesoxyribonucleicAcid(DNA)分析的Flowcy tometry(FCM) )样品保存新方法 ,即新鲜组织块乙醇直接固定法。所用样品为头颈部肿瘤手术切除的新鲜标本 3 0例 ,每例标本重约 0 5～ 1 g ,均等分为两份 ,1份置 70 %乙醇直接固定 ,室温放置 ,待两年后FCM检测。另一份置生理盐水中立即行流式细胞术DNA分析。两组样品经机械法制成单细胞悬液 ,PI染色后上机检测。结果显示 :从两组样品的DNA直方图分析 ,CV(coefficiencyofvariation)值、GO/G1、S及G2 /M各期比率无显著差异 (P >0 0 5)。我们认为在样品收集短期内难以完成 ,需积累保存 ,或需保存半年以上者 ,且不具备低温冷冻设备的条件下 ,新鲜组织块乙醇直接固定法是优于将组织块先制备成单细胞悬液再行乙醇固定的流式细胞术DNA样品保存方法     

The nociceptin/orphanin FQ/NOP receptor system as a target for treatment of alcohol abuse: a review of recent work in alcohol-preferring rats

The intracerebroventricular administration of the 17 amino acid peptide nociceptin/orphanin FQ (N/OFQ), the endogenous ligand of the NOP receptor (previously referred to as ORL-1 or OP4 receptor), reduces voluntary 10% ethanol intake in genetically selected Marchigian Sardinian alcohol-preferring (msP) rats. Studies aimed at the pharmacological characterization of the receptor, which mediates the effect, have shown that the C-terminal 13 amino acid sequence is crucial for activity and that the selective NOP receptor antagonist [Nphe(1)]N/OFQ(1-13)NH(2) blocks the effect of N/OFQ on ethanol drinking. In place conditioning studies, N/OFQ abolishes the conditioned place preference (CPP) induced by ethanol in msP rats, or by morphine in nonselected Wistar rats; these findings suggest that N/OFQ is able to abolish the rewarding properties of ethanol and morphine. Moreover, N/OFQ inhibits reinstatement of alcohol-seeking behavior induced to electric footshock stress, as well as reinstatement of alcohol-seeking behavior induced by ethanol-paired cues. Together, these findings suggest that N/OFQ and its receptor may represent an interesting target for pharmacological treatment of alcohol abuse.     

The cloning and sequencing of thealcB gene,coding for alcohol dehydrogenase II,inAspergillus nidulans

Alcohol dehydrogenase II (ADH II, structural genealcB) was purified from a strain H1035,biA1; alcE1; alc500 alcD1, which produces 100-times more ADH II activity than thealcAalcR deletion strain (alc500). Antibodies were raised against this ADH, and were used to screen a cDNA library in gt11. We have isolated the gene for an ADH which is over-expressed in H1035, and which we believe to be thealcB gene; cDNA and genomic clones were sequenced. The sequence contains three introns and encodes a protein of 367 amino acids. This protein shows a clear level of identity to a range of alcohol dehydrogenases, but is no more closely related to the ADH I and ADH III previously described inA. nidulans than to the ADHs ofS. pombe andS. cerevisiae. The significance of consensus sequences found in the 5 region of the gene is discussed in relation to the regulation of the gene.     

Peripheral neuropathy and myopathy

Summary The effects of variable dietary thiamine concentrations (deficient, normal, surplus) on the development of alcoholic neuromyopathy in rats exposed for 36 weeks to 10–25% (v/v) ethanol or water (control group) as the sole drinking fluid were studied by histological and electrophysiological methods.Abnormalities in the structure of the sciatic nerve (phagocytosis, myelin abnormalities, increase in nonspecific cholinesterase activity) and tibial muscles (angular atrophic fibers, group atrophy, fibre necrosis) developed more frequently in animals on diets deficient in thiamine than in animals on diets with normal or surplus thiamine, and more frequently in animals drinking alcohol and water than in those drinking water alone. No differences were observed between the different groups in the number of perivascular sympathetic nerves, in the motor nerve conduction velocities and in the muscle fibrillation potentials.Thus, thiamine deficiency, established as a significant reduction of red blood cell transketolase activity, seems to have a deleterious effect on the peripheral nerves and muscles. The effect is enhanced by the simultaneous consumption of ethyl alcohol.     

帕罗西汀合并认知疗法治疗酒依赖伴发抑郁及对戒酒的影响

目的评价帕罗西汀合并认知疗法治疗酒依赖伴发抑郁的疗效及对戒酒的影响。方法将98例酒依赖伴发抑郁的患者随机分为研究组和对照组,分别用认知疗法合并帕罗西汀、单用帕罗西汀治疗4个月。用汉密顿抑郁量表(HAMD)评定疗效;用复饮率评定戒酒效果。结果治疗1个月后,研究组HAMD评分16.79±6.50与对照组相近17.88±6.59(P>0.05)。治疗4个月后HAMD评分10.76±5.32、明显低于对照组14.54±5.12(P<0.01);临床疗效(痊愈率44.44%、显效率22.22%、有效率33.34%)明显高于对照组(21.74%、21.74%、56.52%)(P<0.05);复饮率(24.44%)低于对照对照组(45.56%)(P<0.05)。结论认知疗法合并帕罗西汀治疗酒依赖伴发抑郁疗效较好,戒酒效果较好。     

丹参提取物F对大鼠乙醇性胃粘膜损伤的影响及其机制的研究

在大鼠乙醇性胃粘膜损伤模型上，丹参提取物Ｆ ０．１ｍｌ／２００ｇ／ｍｉｎ ｉｖ５分钟可明显降低胃粘膜伊文斯兰含量（Ｐ＜０．０１）和被单星蓝染色的面积（Ｐ＜０．０１）及胃粘膜损伤程度（Ｐ＜０．０１）。用ＴＳ－２００组织光谱分析仪测定大鼠胃粘膜表层血液量和Ｈｂ氧饱和度，表明丹参提取物Ｆ可维持大鼠胃粘膜在６０％乙醇（容积比）后血液量和Ｈｂ氧饱和度基本不变。结果提示：丹参提取物Ｆ有抗大鼠乙醇性胃粘膜损伤作