Funktionelle Morphologie der Theca interna im Bläschenfollikel des menschlichen Ovars

Abstract

A study of histological serial sections of human ovaries and histochemical reactions established that several cell types differentiate in the theca interna during the formation and development of tertiary follicles (2nd growth period). This leads, in turn, to triple-layering of the theca interna in follicles of the 2nd resting period. The inner thecal layer consists of fusiform cells from the basement membrane, which are apposed to the membrana granulosa and show a strong positive reaction to alkaline phosphatases. A tropic function for the follicular epithelium must be assigned to this layer. The middle layer consists of epitheloid thecal cells, which show a strong positive reaction to 3β-ol-steroid hydrogenase. These represent the estrogen glands of the follicle. The outer layer of the theca interna, whose transition to the theca externa is indistinct, also has fusiform cells, which are available as reserve material for the differentiation of further epitheloid thecal cells to pre-ovulatory follicles in later periods of development.

Hode und Eierstock im didaktischen histologisch-terminologischen Vergleich

“…Für die inneren Thekazellen bedeutet das besonders dann eine Massen-und Leistungszunahme, wenn sich alle ihre Zellschichten zu epitheloiden Gynozyten umwan deln und ihre Kapillaren an die Grenzmembran der basalen Ammenzcllen vorsprossen. Genau das tun sie nach Schaar [1976] [Preuß und Budras, 1972). Bei Adulten sind sie bis auf Ausnahmen in den Kortex gelangt, wo sie als Kortexzwischenzellen Stroma-, Theka-und Corpus-luteuin-Gynozyten sein können.…”