Related Experiment Video
Updated: Aug 17, 2026

12:57
X-Ray Visualization of Intraductal Ethanol-Based Ablative Treatment for Prevention of Breast Cancer in Rat Models
Published on: December 9, 2022
Prolactin gonadotrophins in 208 men presenting with infertility
British Journal of Urology
|January 1, 1977
Abstract:
Prolactin, FSH and LH were measured in the plasma of 208 male partners of infertile marriages. We found 1 case of marked hyperprolactinaemia in 82 oligozoospermic men (1.2%). There was no difference in the mean prolactin levels of men with normal sperm counts and men with oligozoospermia or azoospermia. One-third of the men with azoospermia and with sperm density of less than 10 million had marked FSH elevation and our experience confirms the work of others that this indicates a poor prognosis.
Related Concept Videos
Spermatogenesis
Spermatogenesis is the process by which haploid sperm cells are produced in the male testes. It starts with stem cells located close to the outer rim of seminiferous tubules. These spermatogonial stem cells divide asymmetrically to give rise to additional stem cells (meaning that these structures “self-renew”), as well as sperm progenitors, called spermatocytes. Importantly, this method of asymmetric mitotic division maintains a population of spermatogonial stem cells in the male reproductive...
Infertility in Males
Male infertility affects millions of couples worldwide, arising from various factors that impact different stages of the reproductive process. An endocrine imbalance resulting from conditions like hypogonadism, Klinefelter syndrome, or pituitary disorders can disrupt hormone levels and reduce sperm production. Testicular defects, such as tumors, cryptorchidism, atrophic testes, abnormal sperm morphology, and low sperm count or motility, may arise due to genetic factors, structural...
Infertility in Females
Female infertility is defined as the inability to conceive after a year of regular, unprotected intercourse and affects about 10–15% of couples worldwide. The primary cause of female infertility is ovulatory disorders, which hinder the release of eggs. These disorders can be classified as hypothalamic amenorrhea, polycystic ovarian syndrome (PCOS), premature ovarian failure, and hyperprolactinemic anovulation disorders.
Endometriosis, a condition characterized by abnormal growth of endometrial...
Endometriosis, a condition characterized by abnormal growth of endometrial...

