[Endocrine, paracrine and autocrine mechanisms of aromatase activity]. / Mécanismes endocrines, paracrines et autocrines de l'activité aromatasique.

The endocrine, paracrine and autocrine mechanisms involved in aromatase activity. Development of a single follicle during the menstrual cycle is under control of hormones stimulating follicular maturation, ovulation and luteogenesis. Several factors intervene locally to avoid other follicles developing at the same time as the dominant follicle. These other follicles remain quiescent or go on to atresia. Atresia results from the action of several endocrine, paracrine and autocrine mechanisms which synergistically inhibit aromatase activity. The subsequent lack of estrogens reduces granulosa cell multiplication.