Estrogen receptor, progesterone receptor and CD8+ expression in endometrium of women of unexplained infertility

Abstract

ObjectiveThe present study aimed to investigate the changes of endometrial progesterone and estrogen receptors in luteal phase biopsy specimens of infertile women and find a correlation, if any, between these and CD8+ receptors in the same. MethodsThe study was conducted on luteal phase endometrial biopsy specimens of 30 women of unexplained infertility and 15 age matched controls. Paraffin sections were first H & E stained. A standardized immunohistochemical protocol was then used to localize the estrogen, progesterone and CD8+ receptors in these samples that were expressed as percentage positivity. Unpaired T test was applied between the controls and cases both for epithelial and stromal cells. The data was also analyzed for correlation in cases for the positivity of CD8+ Cells with that of ER and PR. ResultsThe positivity of estrogen receptors (ER) in stromal cells was significantly lower (p<0.001) in the infertile women when compared to controls and in both the epithelial and stromal cells for progesterone receptors (p<0.001).The results were non significant for CD8+ cells (p=0.19) and also showed no significant correlation in the positivity of CD8+ cells with that of ER and PR. ConclusionsThe development of molecular probe like ER and PR positivity in endometrial epithelial and stromal cells allows a new approach to be made to the characterization of normal and defective endometrial function.