Baclofen attenuates fMRI alcohol cue reactivity in treatment-seeking alcohol dependent individuals

被引：19

作者：

Logge, Warren B. ^{[1
]}

Morris, Richard W. ^{[2
,3
]}

Baillie, Andrew J. ^{[4
]}

Haber, Paul S. ^{[1
,5
]}

Morley, Kirsten C. ^{[1
]}

机构：

[1] Univ Sydney, Discipline Addict Med, Cent Clin Sch, Fac Med & Hlth, Lv 6,King George V Bldg,83-117 Missenden Rd, Camperdown, NSW 2050, Australia

[2] Univ Sydney, Cent Clin Sch, Fac Med & Hlth, Sydney, NSW, Australia

[3] Univ Sydney, Ctr Translat Data Sci, Sydney, NSW, Australia

[4] Univ Sydney, Fac Hlth Sci, Sydney, NSW, Australia

[5] Royal Prince Alfred Hosp, Drug Hlth Serv, Camperdown, NSW, Australia

来源：

PSYCHOPHARMACOLOGY | 2021年 / 238卷 / 05期

基金：

英国医学研究理事会;

关键词：

Alcohol use disorder; Baclofen; Functional magnetic resonance imaging; Cue reactivity; Randomised controlled trial; GABA; Neuroimaging;

D O I：

10.1007/s00213-019-05192-5

中图分类号：

Q189 [神经科学];

学科分类号：

071006 ;

摘要：

Rationale Baclofen has been shown to effect fMRI alcohol cue reactivity in alcohol dependence, but potential varying effects related to baclofen dose levels have not been examined. Objective This study investigated whether baclofen attenuates craving and alcohol cue-elicited activation in alcohol-dependent treatment seekers, and the relationship between this response and clinical outcomes (Morley et al. 2018; Morley et al. 2013). Methods Participants included 30 alcohol-dependent individuals who had received daily baclofen 30 mg (n = 11), 75 mg (n = 8) or placebo (n = 11) for at least 2 weeks. Using functional magnetic resonance imaging (fMRI), we examined alcohol cue-elicited neural activation during a visual alcohol cue reactivity task 120 min following treatment administration, and alcohol cue reactivity and percentage of heavy drinking days (% HDD) associations were assessed. Results Both baclofen-treated groups reported fewer post-scan % HDD when compared to the placebo-treated group, but no subjective craving group differences were found. Increased alcohol cue-elicited activation was seen in placebo compared to the 75 mg/day baclofen participants in two clusters spanning prefrontal regions implicated in cue reactivity, chiefly frontal regions (i.e., frontal and precentral gyri, anterior cingulate cortex), but no observed alcohol cue reactivity differences between placebo and 30 mg/day baclofen groups. Post-scan % HDD was positively correlated with increased alcohol cue-elicited activation in a cluster encompassing the bilateral caudate nucleus and dorsal anterior cingulate cortex when comparing placebo versus 75 mg/day baclofen groups, and several clusters including prefrontal and mesolimbic regions when comparing placebo versus 30 mg/day baclofen groups. Conclusions Baclofen administration attenuates alcohol cue-elicited activation and reduced the association in baclofen-treated participants between increased activity in key drug cue reactivity regions and higher post-scan % HDD observed in placebo-treated participants, suggesting a dose-specific response effect that may lead to reduced heavy drinking in chronic alcohol-dependent individuals.

引用

页码：1291 / 1302

页数：12