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  • Title: Apoptosis patterns in eutopic and ectopic endometrium, adhesions and normal-looking peritoneum from women with or without endometriosis.
    Author: Hassa H, Tanir HM, Tekin B, Artan S, Dundar E, Kirilmaz SD, Sahin Mutlu F.
    Journal: Arch Gynecol Obstet; 2009 Aug; 280(2):195-9. PubMed ID: 19112572.
    Abstract:
    OBJECTIVE: To assess the apoptosis rate in eutopic and ectopic endometrial stromal and glandular cells, normal peritoneum and adhesions in women with endometriosis. METHODS: A total number of 97 women with (n:60) and without (n:37) histopathologically confirmed endometriosis who underwent laparoscopy or laparotomy in the early follicular phase of the menstrual cycles for pain and infertility were included in this study. Stage I/II and stage III/IV were categorized as early staged and late-staged endometriosis. The endometrial samples were obtained with a Novack cannula from the corpus of the uterus. Normal-looking peritoneum, peritoneal implants and adhesions were sampled and fixed in formaldehyde for immunohistochemical staining with Bcl-2 and Bax. Tissue samples were fixed in formaldehyde for the assessment of apoptosis via terminal deoxynucleotidyl transferase-mediated deoxyuridine triphosphate nick end labeling (TUNEL) and M30 cytoDEATH antibody. RESULTS: The intensity of Bax staining of normal-looking peritoneum in early staged endometriosis was higher, compared to women with late-staged and women without endometriosis (P = 0.03). However, degree of Bcl-2 staining did not differ among early and late-staged endometriosis and women without endometriosis (P = 0.1). In terms of Bcl-2 and Bax staining in the stromal and glandular parts of the eutopic endometria, no significant differences were detected among three groups. In cases with early- and late-staged endometriosis the intensity of Bax and Bcl-2 stainings did not differ in both stromal and glandular parts of ectopic endometria. Number of cells with positive apoptotic signals assessed via TUNEL (P = 1.0) and M30 cytoDEATH antibody (P = 0.59) in normal-looking peritoneum did not differ between three groups. In addition, no difference in term of numbers of apoptotic cells obtained from adhesions was observed between three groups (for TUNEL, P = 0.29, for M30, P = 0.19). CONCLUSIONS: Apoptosis patterns did not differ in the eutopic and ectopic endometria as well as adhesions of women with or without endometriosis.
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