Increased expression of LH/hCG receptors in endometrial hyperplasia and carcinoma in anovulatory women

Gynecologic Oncology
I KonishiT Mori

Abstract

Endometrial hyperplasias and carcinomas are well documented to occur in anovulatory women with or without polycystic ovarian syndrome (PCO), which is characterized by hypersecretion of luteinizing hormone (LH). Although overexpression of LH/human chorionic gonadotropin (hCG) receptors has been demonstrated in endometrial carcinomas, whether LH/hCG receptors are also expressed in the endometrial hyperplasias is not known. In this study, the expression of LH/hCG receptors as well as that of progesterone receptors (PR) was analyzed by immunohistochemistry in 20 cases of normal endometria and 24 cases of endometrial hyperplasia and carcinoma (9 simple hyperplasias, 6 complex hyperplasias, 6 atypical hyperplasias, and 3 well-differentiated carcinomas). Fifteen of the 24 patients were 40 years old or younger, presumably anovulatory by BBT chart. Serum levels of LH, follicular stimulating hormone (FSH), prolactin, estradiol, and testosterone were measured by radioimmunoassay. Expression of LH/hCG receptors was detected in 19 of the 21 hyperplasias with a relatively stronger staining intensity in the glandular cells of complex or atypical hyperplasia as compared with normal endometrial glands or simple hyperplasia. In addition, all of ...Continue Reading

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