Aromatase und Östrogen-Sulfotransferase (EST) Expression bei Endometriosepatientinnen – Hinweis für unbalancierte und autonome Östrogenproduktion in Endometrioseherden
This study investigated the distribution of the estrogen-producing enzyme aromatase and the estrogen-degrading enzyme EST in patients with endometriosis to understand their role in local estrogen regulation.
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The study examined the distribution and relative expression of estrogen-producing aromatase and estrogen-sulfotransferase (EST) in extragenital endometriosis lesions and corresponding uterine endometrium from 35 endometriosis patients, compared with uterine samples from 33 healthy women, using immunohistochemistry and semiquantitative assessment across glandular and stromal components. Aromatase expression was significantly higher in both glandular and stromal parts of extragenital endometriosis lesions than in uterine endometrium from the same patients (32/35 vs. 25/35; p=0.021), and uterine endometrium from patients showed significantly higher aromatase than controls (25/35 vs. 8/33; p<0.001). EST expression did not differ significantly across the three groups, and the paper’s conclusions are limited to observational expression patterns assessed by immunohistochemistry. This paper is centrally about endometriosis — it focuses on how aromatase and EST expression patterns indicate unbalanced, locally autonomous estrogen production in endometriosis lesions and uterine endometrium.
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