Consequences of Adolescent Alcohol Use on Adult Hippocampal Neurogenesis and Hippocampal Integrity

Overview

Journal Int Rev Neurobiol

Specialties Biology
Neurology
Psychiatry

Date 2021 Oct 26

PMID 34696876

Citations 11

Authors

J I Wooden

K R Thompson

S P Guerin

N N Nawarawong

K Nixon

Affiliations

Soon will be listed here.

Abstract

Alcohol is the most commonly used drug among adolescents. Their decreased sensitivity to self-regulating cues to stop drinking coincides with an enhanced vulnerability to negative outcomes of excessive drinking. In adolescents, the hippocampus is one brain region that is particularly susceptible to alcohol-induced neurodegeneration. While cell death is causal, alcohol effects on adult neurogenesis also impact hippocampal structure and function. This review describes what little is known about adolescent-specific effects of alcohol on adult neurogenesis and its relationship to hippocampal integrity. For example, alcohol intoxication inhibits neurogenesis persistently in adolescents but produces aberrant neurogenesis after alcohol dependence. Little is known, however, about the role of adolescent-born neurons in hippocampal integrity or the mechanisms of these effects. Understanding the role of neurogenesis in adolescent alcohol use and misuse is critical to our understanding of adolescent susceptibility to alcohol pathology and increased likelihood of developing alcohol problems in adulthood.

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