Expression Pattern of G-Protein-Coupled Estrogen Receptor in Myometrium of Uteri with and without Adenomyosis.

Jin-Jiao Li,Hua Duan,Fu-Qing Sun,Lu Gan,Yi-Qun Tang,Sha Wang,Tin-Chiu Li,Qian Xu

doi:10.1155/2017/5974693

Abstract

Objective To compare the expression of G-protein-coupled estrogen receptor (GPER) in the junctional zone and outer myometrium of the proliferative and secretory phases of women with and without adenomyosis. Methods A total of 76 women were included in this study, 42 with adenomyosis (proliferative phase, n = 23; secretory phases, n = 19) and 34 controls (proliferative phase, n = 16; secretory phases, n = 18). Protein and total RNA were extracted from the junctional zone (JZ) and outer myometrium (OM). GPER protein and mRNA expression levels were evaluated by the use of western blotting and real-time quantitative polymerase chain reaction (RT-qPCR). Results The expression of GPER protein and mRNA in women with adenomyosis was significantly higher than that of control subjects, both in the junctional zone and in the outer myometrium and both in the proliferative and in the secretory phases. Conclusion The significant and consistent increase in GPER expression in adenomyosis compared with control subjects, regardless of whether it was in the proliferative or secretory phases and regardless of whether it was in the JZ or OM, suggests that GPER plays an important role in the pathogenesis of the adenomyosis.

Highlights

Adenomyosis is characterized by the extension of endometrium into the myometrium, along with myometrial smooth muscle cells hyperplasia and hypertrophy
A recent study showed that ER-α expression was reduced in the midsecretory phase endometrium of women with adenomyosis, whereas ER-β was increased in the endometrium and in the inner myometrium and outer myometrium of women with adenomyosis compared with control subjects [4]
We found that the expression of G-protein-coupled estrogen receptor (GPER) protein and mRNA in women with adenomyosis was significantly higher than that of women without adenomyosis, both in the junctional zone and in the outer myometrium and both in the proliferative and in the secretory phases

Summary

Objective

To compare the expression of G-protein-coupled estrogen receptor (GPER) in the junctional zone and outer myometrium of the proliferative and secretory phases of women with and without adenomyosis. Protein and total RNA were extracted from the junctional zone (JZ) and outer myometrium (OM). The expression of GPER protein and mRNA in women with adenomyosis was significantly higher than that of control subjects, both in the junctional zone and in the outer myometrium and both in the proliferative and in the secretory phases. The significant and consistent increase in GPER expression in adenomyosis compared with control subjects, regardless of whether it was in the proliferative or secretory phases and regardless of whether it was in the JZ or OM, suggests that GPER plays an important role in the pathogenesis of the adenomyosis

Introduction

Materials and Methods

Results

Discussion