Expression of AR and CARM1 as well as its product in rat PCOS model

Liu Yang; Zhao Chunquan

doi:10.13406/j.cnki.cyxb.001005

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Expression of AR and CARM1 as well as its product in rat PCOS model

更新时间：2024-01-17

- Expression of AR and CARM1 as well as its product in rat PCOS model
- Journal of Chongqing Medical University Vol. 41, Issue 7, Pages: 680-684(2016)
- 作者机构：
  
  重庆医科大学附属第一医院妇产科
- 作者简介：
- 基金信息：
- DOI：10.13406/j.cnki.cyxb.001005
  CLC： R-332;R711.75
- Published：2016，
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[1]刘洋,赵纯全.多囊卵巢综合征大鼠模型AR与CARM1及其产物的表达[J].重庆医科大学学报,2016,41(07):680-684.

Liu Yang, Zhao Chunquan. Expression of AR and CARM1 as well as its product in rat PCOS model. [J]. Journal of Chongqing Medical University 41(7):680-684(2016)
[1]刘洋,赵纯全.多囊卵巢综合征大鼠模型AR与CARM1及其产物的表达[J].重庆医科大学学报,2016,41(07):680-684. DOI： 10.13406/j.cnki.cyxb.001005.

Liu Yang, Zhao Chunquan. Expression of AR and CARM1 as well as its product in rat PCOS model. [J]. Journal of Chongqing Medical University 41(7):680-684(2016) DOI： 10.13406/j.cnki.cyxb.001005.

摘要

目的:探讨脱氢表雄酮（dehydroepiandrosterone

DHEA）诱导的SD大鼠多囊卵巢综合征（polycystic ovarian syndrome

PCOS）模型效果

检测该模型中雄激素受体（androgen receptor

AR）与共激活因子相关的精氨酸甲基转移酶1（coactivator-associated arginine methyltransferase 1

CARM1）表达情况

研究PCOS模型中胰岛素抵抗、激素改变、AR与CARM1及其产物非对称二甲精氨酸（asymmetric dimethylarginines

ADMA）之间的关系。方法:将40只23日龄雌性SD大鼠随机分为实验组和对照组

每组20只

实验组每日皮下注射DHEA 0.6 mg/kg

对照组同时同位置注射等量注射用油。连续20 d后观察大鼠卵巢组织学形态及体质量、性激素、空腹血糖、胰岛素（insulin

Ins）及血清ADMA变化

评价胰岛素抵抗情况

并用免疫组化确定CARM1在卵巢组织中的表达情况

Western blot及荧光定量PCR检测卵巢AR、CARM1蛋白及m RNA转录表达情况。结果:PCOS实验组最终体质量、增加体质量、卵巢重量均明显高于对照组（P<0.05）;血清空腹血糖、胰岛素、胰岛素抵抗指数（homeostasis model assessment index

HOMA index）、ADMA、睾酮（testosterone

T）、雌二醇（estrodiol

E2）均明显高于对照组（P<0.05）;实验组卵巢出现大量闭锁卵泡、囊状卵泡

颗粒细胞层减少

卵母细胞消失等特征;卵巢组织中的CARM1主要由颗粒细胞表达;AR、CARM1蛋白量及m RNA表达量实验组明显高于对照组（P<0.05）。结论:CARM1及其产物ADMA与PCOS高雄激素血症、排卵功能障碍和胰岛素抵抗之间存在相关性

但二者与PCOS上述三大病理生理特点之间的内在联系及其具体机理仍需要进一步验证。

Abstract

Objective:To explore the efficacy of dehydroepiandrosterone(DHEA)induced SD rat polycystic ovarian syndrome(PCOS)model

to detect androgen receptor(AR)and coactivator-associated arginine methyltransferase 1(CARM1)expressions

and to investigate the relationship between hormone change

insulin resistance

AR and CARM1

asymmetric dimethylarginines(ADMA). Methods:The 23-day-old female SD rats were randomly divided into two groups. The rats in model group were injected with 0.6 ml/kg DHEA daily for 20 days while the rats in control group were injected with the same volum oil at the same time. Ovarian morphology changes

hormone in blood

insulin resistance

m RNA and protein expression of AR and CARM1 were dected one by one. Immunohistochemistry identified the expression of CARM1 in ovarian tissue. Results:The average body weight of rats in model group at the end of this experiment was significantly higher than that in control group(P<0.05). The same result was achived concerning the average weight of ovaries and the weight gain of rats during the experiment(P<0.05).The fasting insulin and HOMA index

ADMA

testosterone

estrodiol were significantly higher in model group than those in control group(P<0.05)

so as the m RNA and protein expression of AR and CARM1(P<0.05). In ovarian tissue of rats in model group

a large number of atretic and cystic ovarian follicles emerged

granulosa cell layer decreased and oocytes disappeared. CARM1 expressed mainly by the granulosa cells in ovarian tissue. Conclusion:There is a correlation between CARM1 and three major pathophysiological characteristics of PCOS

hyperandrogenism

ovarian dysfunction and insulin resistance

but the internal relations and specific mechanism still need further verification.

关键词

多囊卵巢综合征雄激素受体共激活因子相关的精氨酸甲基转移酶1非对称二甲精氨酸

Keywords

polycystic ovarian syndromeandrogen receptorcoactivator-associated arginine methyltransferase 1asymmetric dimethylarginines

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