Serotonergic Modulation in Alcohol Use Disorders
Summary
Serotonergic neurotransmission exerts profound influence over the motivational, emotional and cognitive processes disrupted in alcohol use disorders. Chronic alcohol exposure alters synaptic levels of serotonin and the function of its receptors and transporters, contributing to heightened craving, negative affect and impaired executive control. Dysregulation of the serotonin transporter intensifies withdrawal-related anxiety and undermines hippocampal plasticity, while receptor subtypes such as 5-HT1A and 5-HT3 govern mood, reinforcement and relapse vulnerability. By modulating these targets, pharmacological interventions can attenuate cue-elicited cravings, alleviate affective disturbances and foster neural recovery. Recent advances have clarified receptor-specific roles in both animal models and human studies, laying the groundwork for more precise, globally applicable treatments that address the dual behavioural and neurobiological dimensions of alcohol dependence.
Research from Nature Portfolio
Recent studies have elucidated the central role of the 5-HT1A receptor in alcohol-induced emotional and neurogenic impairments. In a prolonged binge-drinking paradigm, administration of a selective 5-HT1A partial agonist prevented anxiety-like behaviour during withdrawal and markedly reversed deficits in hippocampal neuron proliferation and differentiation. These findings underscore the capacity of 5-HT1A-directed agents to ameliorate both the behavioural sequelae and structural hippocampal alterations induced by excessive alcohol intake, positioning this receptor as a promising focus for next-generation therapies.
Serotonergic Modulation in Alcohol Use Disorders publication trend
The graph below shows the total number of articles in serotonergic modulation in alcohol use disorders across all publications each year (not limited to Nature Index journals).
Technical terms
5-HT1A receptor: A serotonin receptor subtype that regulates neuronal excitability, anxiety and mood, and is a key target in alcohol withdrawal and relapse.
Serotonin transporter (SERT): A protein that clears serotonin from the synaptic cleft, thereby controlling extracellular neurotransmitter levels and influencing mood and reward circuits.
Neurogenesis: The formation of new neurons, particularly in the hippocampus, which is disrupted by chronic alcohol and can be restored by serotonergic interventions.
References
- 5-HT1A receptor-dependent modulation of emotional and neurogenic deficits elicited by prolonged consumption of alcohol. Scientific Reports (2018).
- Pindolol Rescues Anxiety-Like Behavior and Neurogenic Maladaptations of Long-Term Binge Alcohol Intake in Mice. Frontiers in Behavioral Neuroscience (2019).
- Effects of topiramate on neural responses to alcohol cues in treatment-seeking individuals with alcohol use disorder: preliminary findings from a randomized, placebo-controlled trial. Neuropsychopharmacology (2021).
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