Abstract
The purpose of this study was to investigate the effects of different concentrations of ethanol on learning and memory in female mice and the corresponding interaction with histone deacetylase 1(HDAC1), estrogen receptor α(ERα) and p21 WAF1/CIP1. Data from the Morris water maze test showed that mice in the 50% ethanol group might experience cognitive impairment, while mice in the 2% ethanol group might experience enhanced cognitive capabilities. The number of damaged neurons in the hippocampal CA1 area in the 50% ethanol group was higher than the numbers observed in other groups. The expression of HDAC1 and ERα proteins was lower in the 50% ethanol group than they were in the control group, while p21 WAF1/CIP1 expression was increased. The expression of these proteins in the 2% ethanol group was completely reversed when compared to the 50% ethanol group. p21 WAF1/CIP1 was involved in the cognitive change induced by ethanol. The f2 (−400 bp to −800 bp) and f7 (−2400 bp to −2800 bp) fragments in the p21 WAF1/CIP1 promoter region were functionally active regions that experienced binding relating to HDAC1 and ERα.
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