Effects of chronic arsenic exposure on estrogen receptor-binding fragment-associated gene 9 and estrogen-responsive finger protein mRNA expression in female rat's myocardium / 中国地方病学杂志

ABSTRACT

Objective To observe the effects of chronic arsenic exposure on estrogen receptor-binding fragment-associated gene 9 (Ebag9) and estrogen-responsive finger protein (efp) mRNA expression in female rat' s myocardium.Methods Fifty female Wistar rats were randomly divided into five groups according to arsenic (As2O3) concentrations in drinking-water0.00(control),0.05,0.10,0.20,0.40 mg/L groups and RT-PCR was used to detect Ebag9 and efp mRNA expression of myocardium at the 32 weeks of experiment.Results Ebag9 and efp mRNA expression levels in 0.00,0.05,0.10,0.20,0.40 mg/L groups were respectively as follows0.54 ±0.14,0.52 ± 0.10,0.48 ± 0.24,0.58 ± 0.13,0.45 ± 0.19 and 0.85 ± 0.14,0.86 ± 0.12,0.87 ± 0.09,0.99 ±0.10,0.86 ± 0.19.Compared to the control group,Ebag9 mRNA level of the 0.20 mg/L group was increased,and decreased in other groups,but the difference between two groups was not significant(all P ＞ 0.05).Compared to control group,the efp mRNA level of 0.20 mg/L group increased significantly(P ＜ 0.05),and showed increased tendency in other arsenic groups,but the difference between two groups was not significant (all P ＞ 0.05).Conclusions Ebag9 and efp mRNA expression have changed in myocardium of rats exposed to chronic arsenic.Arsenic may has endocrine disruptor effect to female rat's myocardium.