title: Structural and hormonal changes during follicular maturation in the ovary of the domestic goose.
abstract: Follicle maturation in the ovary of sexually mature domestic geese in the spring reproductive cycle was investigated by histological methods and steroid-RIA. The single-layer granulosa of primary follicles temporarily transformed in the growing white follicles into several layers or a simple membrana granulosa with nuclei at several different levels in the cell. In the yolky follicles the granulosa represents a cuboidal epithelium (F4-F3) and subsequently a high cylindrical epithelium (F1). The originally connective tissue-like cells of the theca interna show a glandular proliferation in the largest white (F7) and the small yolky follicles (F6-F5). Glandular cell nests in the theca externa are typical in the generation of small white follicles and are absent in the wall of yolky follicles. Progesterone-content in the follicular wall (granulosa + theca) is the highest in the F1-F2 and F6-F5 types and is low in small white follicles (F8, F9 and F10). E2 concentration shows only slight variations between F1-F10. TEST content shows a slight increase between F1 and F3 and is high in medium-sized white follicles (F8-F9). The results suggest that in addition to the granulosa, the theca interna is also capable of an intensive progesterone synthesis.
authors.affiliation: Laboratory of Goose Biochemistry, University of Agricultural Sciences, Gödöllõ, Hungary.
authors.forename: V
authors.initials: V
authors.lastname: Forgó
authors.forename: G D
authors.initials: GD
authors.lastname: Afanasiev
authors.forename: P
authors.initials: P
authors.lastname: Péczely
mesh_terms: D000818:Animals; D004958:Estradiol / Q000502:physiology; D005260:Female; D005498:Follicular Phase; D005777:Geese / Q000502:physiology*; D010053:Ovary / Q000166:cytology / Q000502:physiology*; D011374:Progesterone / Q000502:physiology; D011863:Radioimmunoassay; D013739:Testosterone / Q000502:physiology
chemical_list: D013739:Testosterone; D011374:Progesterone; D004958:Estradiol