Effect of gonadotropin-releasing hormone antagonist on primordial follicle survival in the primate ovary.

Objective: To examine the effects of gonadotropin-releasing hormone (GnRH) antagonist on primordial follicle reserve in the primate ovary.

Study Design: A prospective basic research study in which 10 juvenile cynomolgus monkeys (Macaca fascicularis) had 1 ovary surgically removed. Six animals were then treated with the GnRH antagonist antide (1.

Neutralization of endogenous vascular endothelial growth factor depletes primordial follicles in the mouse ovary.

The regulation of early follicular growth and development involves a complex interaction of autocrine, paracrine, and endocrine signals. The ability of these factors to regulate follicle growth may depend in part on the extent of vascular delivery to and perfusion of the ovary. Vascular endothelial growth factor A (VEGFA) is a major regulator of vascular physiology in the ovary.

Acute depletion of murine primordial follicle reserve by gonadotropin-releasing hormone antagonists.

Objective: To examine the effects of GnRH antagonists on preantral follicle survival in vivo and to investigate whether GnRH antagonist use during cyclophosphamide treatment would protect the ovary and preserve primordial follicle survival in a murine model.

Design: Prospective basic research study.

Setting: Research laboratory in an academic medical center.

Vascular endothelial growth factor stimulates preantral follicle growth in the rat ovary.

The regulation of preantral follicle growth in mammals is poorly understood. The availability of an adequate vascular supply to provide endocrine and paracrine signals may be important during the early states of follicle growth as well as the later states of follicle selection and dominance. The objective of the present study was to investigate whether vascular endothelial growth factor (VEGF) plays a role in preantral follicular development in the rat ovary.