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. 2022 Nov;27(6):e13243.
doi: 10.1111/adb.13243.

Prognostic factors for low-risk drinking and relapse in alcohol use disorder: A multimodal analysis

Angéline Maillard  1 , Alice Laniepce  1   2   3 , Shailendra Segobin  1 , Najlaa Lahbairi  1 , Céline Boudehent  1   2   4 , François Vabret  1   2   4 , Nicolas Cabé  1   2   4 , Anne-Lise Pitel  1   2   5
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Free article

Prognostic factors for low-risk drinking and relapse in alcohol use disorder: A multimodal analysis

Angéline Maillard et al. Addict Biol. 2022 Nov.
Free article

Abstract

This study aims to specify the determinants of low-risk alcohol drinking and relapse at different time points after detoxification in patients with severe alcohol use disorder (AUD). Fifty-four patients with AUD and 36 healthy controls (HC) were evaluated early in abstinence (T1). They underwent clinical, neuropsychological and neuroimaging (structural MRI and 18 FDG-PET) investigations. Patients with AUD were subsequently classified as "low-risk drinkers" (LR) or "relapsers" (R) based on their alcohol drinking at 6 months (T2) and 1 year (T3) after discharge, using their medical record or self-reported drinking estimation at follow-up. Based on the alcohol status at T2 and compared with HC, only R had alexithymia, lower grey matter volume in the midbrain and hypermetabolism in the cerebellum and hippocampi. Based on the alcohol status at T3 and compared with HC, only R had more severe nicotinic dependence, lower episodic and working memory performance, lower grey matter volume in the amygdala, ventromedial prefrontal cortex and anterior cingulate gyrus and hypermetabolism in cerebellum, hippocampi and anterior cingulate gyrus. Moreover, R had bilateral frontal hypometabolism, whereas LR only presented right frontal hypometabolism. Nicotine dependence, memory impairments and structural brain abnormalities in regions involved in impulsivity and decision-making might contribute to a 1-year relapse. Treatment outcome at 1 year may also be associated with an imbalance between a hypermetabolism of the limbic system and a hypometabolism of the frontal executive system. Finally, cerebellar hypermetabolism and alexithymia may be determinants of relapse at both 6 months and 1 year.

Keywords: alcohol use disorder; cognition; low-risk drinking; neuroimaging; relapse; treatment outcomes.

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