Alterations ofestradiol-induced histone H3 acetylation in the preoptic area and anteroventral periventricular nucleus of middle-aged female rats.
Alterations ofestradiol-induced histone H3 acetylation in the preoptic area and anteroventral periventricular nucleus of middle-aged female rats.
复制标题
雌二醇诱导的中年雌性大鼠视前区和前腹侧室周核组蛋白 H3 乙酰化的改变。
DOI:
10.1016/j.bbrc.2019.06.145
复制
发表时间:
2019
影响因子:
3.1
通讯作者:
Yan Sun
中科院分区:
文献类型:
--
作者:
Wen Xu;Jianqin Huang;Lisha Li;Xinyan Zhang;Yan Wang;Guoqing Tong;Yan Sun
In this study we investigated the characteristics of histone H3 acetylation in the anterior hypothalamus under E2 positive feedback to gain a better understanding of the mechanism underlying reduced GnRH neuron activation and altered gene expression in female reproductive aging. Young and middle-aged female rats were ovariectomized (OVX) and treated with estradiol (E2) or oil. C-Fos expression, the number of GnRH neurons co-localized with c-Fos in the preoptic area (POA), and the number of acetylated histone H3 cells in the POA and anteroventral periventricular nucleus (AVPV) were quantified at the time of the expected GnRH neuron activation. We used real-time PCR to evaluate the expression ofEsr1target genes includingKiss1andVGluT2and genes known asEsr1coregulators in the anterior hypothalamus. Our results show that in the young females, E2 markedly increased histone H3 acetylation in the POA and AVPV, coincident with increased c-Fos and GnRH neuron activation in the POA. In middle-aged females, E2-induced histone H3 acetylation was reduced in the POA but was not significantly altered in the AVPV. This occurred in association with a reduction of c-Fos expression and the number of GnRH cells expressing c-Fos in the POA as well as a down-regulation ofKiss1andVGluT2mRNA expression in the anterior hypothalamus of the animals. E2 caused significant decreases inNcoa2andCrebbpmRNA expression in the anterior hypothalamus of young, but not middle-aged females. Taken together, these data suggest that alterations of histone H3 acetylation in the POA and AVPV and the inability ofNcoa2andCrebbpto respond to E2 in the middle-aged anterior hypothalamus partially contribute to the decline of GnRH neuron activation and E2 target gene expression changes that occur in female along with reproductive aging.
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DOI:
--
发表时间:
2010
期刊:
影响因子:
--
作者:
Matsumoto T.Androgen;Estrogen
通讯作者:
Estrogen
影响因子:
4.8
作者:
Kermath, Bailey A.;Riha, Penny D.;Gore, Andrea C.
通讯作者:
Gore, Andrea C.
影响因子:
16
作者:
Booth LN;Brunet A
通讯作者:
Brunet A
影响因子:
56.9
作者:
Peleg, Shahaf;Sananbenesi, Farahnaz;Fischer, Andre
通讯作者:
Fischer, Andre
DOI:
--
发表时间:
--
期刊:
--
影响因子:
--
作者:
通讯作者:
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