the name for several protein hormones made by the ovaries. Inhibins regulate within the ovary and control the production of FSH. Inhibin B decreases early in perimenopause and is thought to be responsible for the endogenous perimenopausal ovarian hyperstimulation that may occur.
Polypeptide hormone produced in ovary and testes regulating the release of FSH from anterior pituitary.
A hormone, produced by the sustentacular cells, that inhibits the pituitary secretion of follicle-stimulating hormone.
A protein hormone produced in women by developing follicles as well as by the corpus luteum, and in men by the testis in the presence of spermatogenesis, and acting on the pituitary gland to inhibit the production of follicle stimulating hormone. In women, falling levels occur as the number of developing follicles reduces to low numbers leading up to menopause, thus causing the elevation of serum FSH and shortening of the follicular phase that characterises the premenopause. In men, appreciable levels of serum inhibin B, a subclass of the inhibin family, predicts the presence of at least a small amount of sperm production.
A substance secreted by the testes and ovaries which regulates FSH levels. (page 105)
A hormone produced by the testes, which regulates FSH levels, and thus, spermatogenesis.
A male feedback hormone made in the testicles to regulate FSH production by the pituitary gland.
Inhibin is a peptide that is an inhibitor of FSH synthesis and secretion, and participates in the regulation of the menstrual cycle.