Estrogen suppresses the stress response of prolactin-releasing peptide-producing cells

被引：10

作者：

Adachi, S

Mochiduki, A

Nemoto, H

Sun, B

Fujiwara, K

Matsumoto, H

Inoue, K

机构：

[1] Jichi Med Sch, Dept Physiol, Kawachi, Tochigi 3290498, Japan

[2] Takeda Chem Ind Ltd, Pharmaceut Discovery Res Div, Discovery Res Labs 1, Tsukuba, Ibaraki 3004293, Japan

来源：

NEUROSCIENCE LETTERS | 2005年 / 380卷 / 03期

基金：

日本学术振兴会;

关键词：

prolactin-releasing peptide; stress; estrogen; c-Fos protein; immunocytochemistry; rat;

D O I：

10.1016/j.neulet.2005.01.064

中图分类号：

Q189 [神经科学];

学科分类号：

071006 ;

摘要：

Prolactin-releasing peptide (PrRP) is known to be produced in A1/A2 noradrenergic neurons and to mediate the stress response. Our preliminary experiment showed that PrRP neurons in the A2 region differed between males and females in terms of c-Fos expression. In addition it has been reported that estrogen receptor a is detectable in A2 PrRP neurons. Therefore, we speculated that the stress response of PrRP neurons is modified by estrogen. We, therefore, examined c-Fos expression in A2 PrRP neurons during the estrous cycle and found that c-Fos accumulation in PrRP neurons was significantly decreased in estrus compared with in proestrus, metestrus and diestrus. This suggests that estrogen suppresses the activation of PrRP neurons. We thus administered diethylstilbestrol (DES) to ovariectomized rats and then added restraint stress. The data clearly showed that PrRP cells in DES-administered rats significantly suppressed c-Fos accumulation induced by stress. 2005 Elsevier Ireland Ltd. All rights reserved.

引用

页码：311 / 315

页数：5

共 20 条

[1] Quantification of prolactin-releasing peptide (PrRP) mRNA expression in specific brain regions of the rat during the oestrous cycle and in lactation [J].