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The co-expression of GPER and Gankyrin in ovarian endometriosis and its correlation with the rASRM stages

  • General Gynecology
  • Published:
Archives of Gynecology and Obstetrics Aims and scope Submit manuscript

Abstract

Objective

The aim of this study was to examine the expression of G protein-coupled estrogen receptor (GPER) and Gankyrin in ovarian endometriosis, analyze their clinicopathological significance, and investigate their correlation.

Methods

Quantitative real-time polymerase chain reaction and Western blot were performed to testify mRNA and protein expression of GPER and Gankyrin in ovarian endometriosis. Immunohistochemical staining (streptavidin–peroxidase method) was conducted to determine the expression and distribution of GPER and Gankyrin protein in matched ectopic and eutopic endometrium of endometriosis and normal endometrium. We also investigated their associations with rASRM stages and the correlation between the two proteins.

Results

GPER and Gankyrin were found overexpressed in ectopic endometrium of endometriosis compared with either its eutopic counterpart or endometrium from normal patients. The immunohistochemical analysis also revealed that higher expression was observed in eutopic endometrium with or without endometriosis during proliferative phase in comparison to secretory phase. These two proteins were positively correlated with the stages of endometriosis. Moreover, a significant positive correlation was found between GPER and Gankyrin both in ectopic and eutopic endometrium of the ovarian endometriosis.

Conclusion

GPER and Gankyrin might be implicated in the hormonal regulation of endometriosis and be associated with the severity of endometriosis. In addition, GPER and Gankyrin were found to be positively correlated, which could possibly serve as novel therapeutic targets for this disease.

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Authors and Affiliations

  1. Department of Obstetrics and Gynecology, Xiangya Hospital, Central South University, Changsha, Hunan, China

    Chun Zhang, Xiying Yuan & Yi Zhang

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  1. Chun Zhang
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  2. Xiying Yuan
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  3. Yi Zhang
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Correspondence to Yi Zhang.

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Zhang, C., Yuan, X. & Zhang, Y. The co-expression of GPER and Gankyrin in ovarian endometriosis and its correlation with the rASRM stages. Arch Gynecol Obstet 293, 133–141 (2016). https://doi.org/10.1007/s00404-015-3807-x

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  • DOI: https://doi.org/10.1007/s00404-015-3807-x

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