ФГБНУ «НИИ акушерства, гинекологии и репродуктологии им. Д.О. Отта», Санкт-Петербург, Россия ■ С целью изучения овариальной ароматазной активности при синдроме поликистозных яичников (СПЯ) обследовано 49 больных СПЯ и 33 здоровые женщины репродуктивного возраста. Ароматазную активность определяли с помощью коэффициента эстрадиол/число антральных фолликулов в обоих яичниках (Э 2 /n). Значения овариальной ароматазы положительно коррелировали (р < 0,05) с результатами ее определения с помощью теста с ингибитором ароматазы летрозолом при СПЯ. Сниженная ароматазная активность антральных фолликулов имелась у 59 % больных СПЯ. Полученные данные указывают на то, что коэффициент Э 2 /n позволяет оценивать овариальную ароматазу и что абсолютный или относительный дефицит овариальной ароматазы лежит в основе патогенеза СПЯ. ■ Ключевые слова: синдром поликистозных яичников; овариальная ароматаза. ■ In order to study ovarian flavor ase activity in polycystic ovary syndrome (PCOS) examined 49 patients with PCOS and 33 healthy women of reproductive age. Aromatase activity determined using estradiol/number of antral follicles in both ovaries ratio (Е 2 /n). Values ovarian aromatase positively correlated (p < 0.05) with the results of its determination by a test with the aromatase inhibitor letrozole in PCOS. Reduced aromatase activity of antral follicles was present in 59 % of patients with PCOS. These data indicate that Е 2 /n ratio allows to evaluate ovarian aromatase and that an absolute or relative deficiency of ovarian aromatase underlies the pathogenesis of PCOS.■
Aromatase is the key enzyme, which converts androgens into estrogens. To study the role of aromatase in pathogenesis of endometriosis 57 patients and 15 healthy women of reproductive age were examined. Aromatase activity was detected by reaction of estrogens on aromatase inhibitor letrozol intake. Ovarian source of detected aromatase activity was proved by suppression of reaction on letrozole intake during therapy with gonadotropin- releasing hormone agonist. Aromatase activity in recalculation on antral follicle in endometriosis patients withII–IV stages was higher than in healthy women, though total ovarian aromatase activity was not differed from control group because of low number of antral follicles in endometriosis patients. The disturbance of folliculogenesis in endometriosis is connected probably with hyperestronaemia, which has ovarian and extragonandal origin.
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