E- and P-selectin expression in endometriotic tissues and the corresponding endometria

M Schmidt, Pedro‐Antonio Regidor, P A Regidor, Karl Engel, K Engel, M Regidor, Elke Winterhager, E Winterhager, S Scotti, Silvestro Scotti, A E Schindler
Gynecological endocrinology : the official journal of the International Society of Gynecological Endocrinology · 2000 · vol. 14(2) , pp. 111–117 · doi:10.3109/09513590009167669 · PMID:10836198 · W2060311155
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This study found low expression of E- and P-selectins in endometriotic tissues and corresponding endometria, suggesting these molecules do not initiate inflammation in endometriosis.

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Abstract

Endometriosis is one of the most frequent diseases in gynecology. It is histologically defined as a non-malignant pathology in which endometrial-like tissue is found outside the uterus. The pathogenesis and mechanisms involved in the development of endometriosis-associated pain symptoms are still under investigation. A local peritoneal inflammation seems to play an important role in the origin of these symptoms. Selectins belong to a group of cell adhesion molecules that mediate the localization of circulating leukocytes on the endothelium at the sites of inflammation. The aim of this study was to investigate the expression of E- and P-selectins in endometriotic tissues and the corresponding endometria. Thirty endometriotic samples, 13 corresponding endometria and six endometria of patients without endometriosis were analyzed using an immunohistochemical technique. Just two endometriotic tissues expressed E-selectin, while five samples were positive for P-selectin. The selectin expression of the corresponding endometria was also very weak. No correlations between the revised American Fertility Society (rAFS) score or the hormonal situation of the patients at the time of biopsy and the selectin expression could be found. In conclusion, the selectin expression in endometriotic glands does not play an important role in the initiation of inflammatory processes caused by endometriosis. This inflammation must be considered as a secondary reaction after the implantation of the endometriotic glands, so that endometriotic tissues are not able to induce, by the expression of selectins, a direct inflammation.

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Condition tags

mesh:D004715endometriosis

MeSH descriptors

Endometriosis Endometrium E-Selectin P-Selectin Biopsy Endometriosis Endometriosis Endometrium E-Selectin Estradiol Estradiol Female Humans Immunohistochemistry Progesterone Progesterone P-Selectin

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References (28)

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