BDNF Val(66)Met genotype is associated with drug-seeking phenotypes in heroin-dependent individuals: a pilot study.

BDNF Val(66)Met genotype is associated with drug-seeking phenotypes in heroin-dependent individuals: a pilot study.
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DOI:
10.1111/j.1369-1600.2011.00431.x
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发表时间:
2013-09
期刊:
影响因子:
3.4
通讯作者:
Burmeister M
Burmeister M
中科院分区:
医学2区
文献类型:
--
作者:
Greenwald MK;Steinmiller CL;Sliwerska E;Lundahl L;Burmeister M

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脑源性神经营养因子 (BDNF) Val66Met 基因型与神经行为缺陷相关。为了检查其与成瘾的相关性,我们检查了寻求药物行为中的 BDNF 基因型差异。海洛因依赖志愿者 (N=128) 完成了一项访谈,评估了过去一个月的自然药物寻求/使用行为。在非裔美国人 (N=74) 中,Met 等位基因并不常见(携带频率为 6.8%);因此,分析集中于欧洲裔美国人 (N=54),其中 Met 等位基因很常见(携带频率 37.0%)。在自然环境中,Met 携带者 (n=20) 比 Val 纯合子 (n=34) 报告了更多的时间和成本密集型海洛因寻求以及更多的香烟使用。 BDNF Val66Met 基因型预测“每周海洛因投资”(购买时间 × 金额 × 频率)的方差为 18.4%。这些数据表明 BDNF Met 等位基因可能赋予“首选药物投资”表型,抵抗较高药物价格和非药物强化的调节作用。这些初步假设生成的发现需要复制,但与证明药物强化中神经营养影响的临床前数据一致。这种基因型是否与阿片类药物或尼古丁以外的其他滥用物质或治疗反应有关,仍有待确定。
Brain-derived neurotrophic factor (BDNF) Val66Met genotype has been associated with neurobehavioral deficits. To examine its relevance for addiction, we examined BDNF genotype differences in drug–seeking behavior. Heroin-dependent volunteers (N=128) completed an interview that assessed past-month naturalistic drug seeking/use behaviors. In African Americans (N=74), the Met allele was uncommon (carrier frequency 6.8%); thus, analyses focused on European Americans (N=54), in whom the Met allele was common (carrier frequency 37.0%). In their natural setting, Met carriers (n=20) reported more time– and cost–intensive heroin–seeking and more cigarette use than Val homozygotes (n=34). BDNF Val66Met genotype predicted 18.4% of variance in ‘weekly heroin investment’ (purchasing time × amount × frequency). These data suggest the BDNF Met allele may confer a ‘preferred drug–invested’ phenotype, resistant to moderating effects of higher drug prices and non-drug reinforcement. These preliminary hypothesis-generating findings require replication, but are consistent with preclinical data that demonstrate neurotrophic influence in drug reinforcement. Whether this genotype is relevant to other abused substances besides opioids or nicotine, or treatment response, remains to be determined.
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期刊: Neuropsychopharmacology : official publication of the American College of Neuropsychopharmacology
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