WORLD OF REPRODUCTIVE BIOLOGY: Regulating Male Fertility

Reproductive biology of the male Cape porcupine

The reproductive tract of the male Cape porcupine is morphologically and histologically similar to that of New World hystricomorph rodents. Males are reproductively active throughout the year and attained sexual maturity (complete spermatogenesis) at an age of 8-18 months. Testes weight, epididymides weight and seminiferous tubule diameter attained asymptotic values at the age of 23-30 months. ...

Study on The Reproductive Organs and Fertility of The Male Mice following Administration of Metronidazole

Cytokines in Male Fertility and Reproductive Pathologies: Immunoregulation and Beyond

Germline development in vivo is dependent on the environment formed by somatic cells and the differentiation cues they provide; hence, the impact of local factors is highly relevant to the production of sperm. Knowledge of how somatic and germline cells interact is central to achieving biomedical goals relating to restoring, preserving or restricting fertility in humans. This review discusses t...

Cranes of the World: 5. Comparative Reproductive Biology

What can spermatogonial transplants teach us about male reproductive biology?

In this issue of Endocrinology, there is a rapid communication by Mahato et al. (1) that addresses the issue of estrogen action directly on germinal cells in the testis. The authors transplanted germ cells from the testis of the estrogen receptor a (ERa) knockout mice into the seminiferous tubules of germ cell-depleted wild-type mice. The germ cells carrying the knockout mutation underwent qual...