Nature Neuroscience:提高大脑犬尿喹啉酸浓度或可治疗大麻成瘾

2013-11-07 koo 生物360

大脑中的一种自然产生化合物——犬尿喹啉酸的水平浓度上升会减少大麻中产生精神影响的主要成分对大鼠和猴子产生的奖励属性,这是《自然-神经科学》(Nature Neuroscience)上一项研究得出的结论。该研究发现,犬尿喹啉酸也能防止动物旧病复发重新吸食大麻。【原文下载】同所有药物滥用一样,大麻中影响精神的主要成分 Δ9-tetrahydrocannabinol(THC)会增加大脑中多巴胺奖励机制的

大脑中的一种自然产生化合物——犬尿喹啉酸的水平浓度上升会减少大麻中产生精神影响的主要成分对大鼠和猴子产生的奖励属性,这是《自然-神经科学》(Nature Neuroscience)上一项研究得出的结论。该研究发现,犬尿喹啉酸也能防止动物旧病复发重新吸食大麻。【原文下载

同所有药物滥用一样,大麻中影响精神的主要成分 Δ9-tetrahydrocannabinol(THC)会增加大脑中多巴胺奖励机制的活跃度。阻断α-7尼古丁乙酰胆碱受体(á7nAChRs),能够防止由THC引起的多巴胺神经细胞活跃度增加,并对药物滥用治疗起到帮助作用。但是,使用阻断这些受体的药物会产生意外的副作用。相反,增加调控这些受体的天然物质的浓度水平会是更安全、有效的方法。

Robert Schwarcz等人发现犬尿喹啉酸可天然阻断á7nAChRs,再配合药物Ro61-8048,可防止猴子与大鼠吸食大麻。而且,对于有过吸食大麻历史的动物来说,即便让它们服用很小剂量的 Δ9-tetrahydrocannabinol(THC)或者给它们一点与吸大麻有关的暗示,Ro61-8048仍能够防止它们复吸。虽然犬尿喹啉酸水平浓度升高对人体影响的相关研究还未展开,目前的结果仍意味着调控大脑中犬尿喹啉酸的水平浓度或许是治疗人体大麻成瘾的一种有效手段。

原文出处

Zuzana Justinova, Paola Mascia, Hui-Qiu Wu, Maria E Secci, Godfrey H Redhi, Leigh V Panlilio, Maria Scherma, Chanel Barnes, Alexandra Parashos, Tamara Zara, Walter Fratta, Marcello Solinas, Marco Pistis, Jack Bergman, Brian D Kangas, Sergi Ferré, Gianluigi Tanda, Robert Schwarcz& Steven R Goldberg. Reducing cannabinoid abuse and preventing relapse by enhancing endogenous brain levels of kynurenic acid. Nature Neuroscience, 13 October 2013【原文下载

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    2013-11-09 kcb069
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    2013-11-09 lsndxfj
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    2013-11-09 jichang
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    2014-05-24 liye789132251