Hormones in male reproduction and fertility

Thyroid Hormones in Male Reproduction and Fertility

Thyroid hormones, previously thought not to affect spermatogenesis and male fertility, are now being recognized as having important role in spermatogenesis. The identification of thyroid hormone receptors on Sertoli cells, the nurturing cells for sperm in the testis, has embarked further research to investigate the role of thyroid hormones in male reproduction. Since spermatogenesis occurs in c...

PPARs and RXRs in Male and Female Fertility and Reproduction

Peroxisome proliferator-activated receptors (PPARs) are ligand-activated nuclear receptors controlling many important physiological processes, including energy homeosta-sis, lipid, and glucose metabolism, inflammation, as well as cell proliferation and differentiation. PPARs and their het-erodimeric partner (retinoid X receptor, RXR) have been found in early embryo, developing fetus, and in var...

Prostasomes--their effects on human male reproduction and fertility.

The prostate is a glandular male accessory sex organ vital for normal fertility. It provides the prostatic component of seminal plasma which nourishes and protects sperm following ejaculation. Prostasomes are small (40-500 nm) membrane-bound vesicles produced by epithelial cells lining the prostate acini and are a component of prostatic secretions. Although the existence of these particles has ...

Hormones in Reproduction

Hormones in Reproduction

Nc ORMAL reproduction and lactation in domestic animals are regulated by hormones, a group of chemical materials that are secreted by the ductless or endocrine glands directly into the blood stream. The blood carries these chemical messengers to the parts of the body where they produce their effects. Of the endocrine glands, the pituitary is the most important. In the cow it is about the size o...