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Chronic alcoholism can damage the cytoskeleton and aggravate neurological deifcits. However, the effect of chronic alcoholism on hippocampal neurons remains unclear. In this study, a model of chronic alcoholism was established in rats that were fed with 6%alcohol for 42 days. Endog-enous hydrogen sulifde content and cystathionine-beta-synthase activity in the hippocampus of rats with chronic alcoholism were signiifcantly increased, while F-actin expression was decreased. Hippocampal neurons in rats with chronic alcoholism appeared to have a fuzzy nuclear mem-brane, mitochondrial edema, and ruptured mitochondrial crista. These findings suggest that chronic alcoholism can cause learning and memory decline in rats, which may be associated with the hydrogen sulfide/cystathionine-beta-synthase system, mitochondrial damage and reduced expression of F-actin.
