Angiogenesestatus von Endometrioseläsionen und von eutopem Endometrium – Einfluss des menstruellen Zyklus und einer GnRH-Vorbehandlung
This study investigated the influence of hormonal stimuli on angiogenesis in eutopic endometrium and endometriosis lesions across the menstrual cycle.
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The study investigated how hormonal stimulation affects angiogenesis in eutopic endometrium and different endometriosis lesion locations, using 76 tissue samples from endometriosis patients and 30 control endometrium samples. Using double immunohistochemical staining for von Willebrand factor (F-VIII) and Ki67, the authors quantified microvessel density and a vessel proliferation index, stratifying tissues by anatomic location (eutopic endometrium, peritoneal lesions, endometriomas, deep infiltrating lesions, and adenomyosis) and by menstrual cycle phase. In controls, vessel proliferation was significantly higher in proliferative than secretory endometrium, with a similar (not significant) pattern in endometriosis patients, and no menstrual-cycle–dependent differences were observed in ectopic lesions. In deep infiltrating endometriosis, pretreatment with GnRH-a was associated with a significant reduction in vessel proliferation index, while angiogenic measures did not differ significantly between endometriosis locations; this paper is centrally about endometriosis — specifically angiogenesis status in endometriosis lesions versus eutopic endometrium and the effect of menstrual cycle and GnRH-a pretreatment.
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