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. 2024 Nov;241(11):2205-2222.
doi: 10.1007/s00213-024-06696-5. Epub 2024 Oct 21.

Exploring the efficacy of cholinergic agents for the treatment of psychostimulant use disorder: a systematic review

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Exploring the efficacy of cholinergic agents for the treatment of psychostimulant use disorder: a systematic review

Nicolas Salloum et al. Psychopharmacology (Berl). 2024 Nov.

Abstract

Rationale: No drugs are currently validated to treat psychostimulant use disorder (PUD). Pathophysiological studies consistently highlight the contribution of cholinergic mechanisms in psychostimulant use, including the vulnerability to PUD, paving the way for potential therapeutic strategies.

Objectives: The aim of this systematic review is to describe and discuss the efficacy of cholinergic agents in drug trials for patients with PUD.

Methods: A systematic review was conducted on April 4, 2024 in MedLine, Embase and Cochrane Library databases on controlled clinical drug trial of cholinergic agents in humans with PUD, psychostimulant abuse or dependence and psychostimulant use in recent year.

Results: Twenty-eight articles were included, twenty-one on cocaine and seven on amphetamines. Cholinergic agents used in these studies were biperiden (a muscarinic antagonist), mecamylamine (a nicotinic antagonist), nicotinic agonists, acetylcholinesterase inhibitors (AChEI), or citicoline. Two types of trials were identified. There were seventeen randomized controlled clinical trials evaluating cholinergic agents on psychostimulant use reduction in outpatients seeking treatment. Additionally, we retrieved eleven short-term «proof-of-concept» laboratory trials mainly with supervised psychostimulant administration and/or triggered craving challenges. Outpatient trials were heterogeneous and for most, inconclusive. Only two studies on galantamine (AChEI) and citicoline, reported a significant reduction of cocaine consumption. «Proof-of-concept» laboratory trials showed no evidence of efficacy on the selected outcomes, notably on craving.

Conclusions: This review does not support the current prescription of cholinergic agents to treat PUD. Replication clinical trials notably on galantamine or other AChEI, and proof-of-concept trials on comedown symptoms will be necessary to identify a potential therapeutic indication for cholinergic agents in PUD.

Keywords: Acetylcholine; Amphetamines; Cholinergic agents; Cocaine; Psychostimulant use disorder; Psychostimulants.

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