luteinizing-hormone releasing hormone


luteinizing-hormone releasing hormone
   (lh-rh)
   The same substance as Follicle-Stimulating-Hormone Releasing Hormone (FSH-RH), both of which are actually Gonadotrophin-Releasing Hormone (GnRH or GRH). Confused? Imagine being an endocrinologist 20 years ago. These (This) are (is) a peptide secreted into the little portal system that drains from the hypothalamus to the pituitary. If it is surged hourly and not too strongly, the pituitary secretes LH and the ovaries secrete estrogen. If it is surged hourly and strongly, the estrogens rise drastically, the pituitary secretes FSH, you pop an egg, start the corpus luteum and begin progesterone secretion. The surge is now slowed to every four or five hours, not too strongly, and the pituitary secretes LH every four or five hours...and the ovaries make progesterone. The same hypothalamic hormone triggers different pituitary responses based on AMPLITUDE and FREQUENCY.

Herbal-medical glossary. 2015.

Look at other dictionaries:

  • Luteinizing hormone — beta polypeptide Identifiers Symbol LHB Entrez 3972 HUGO …   Wikipedia

  • luteinizing hormone-releasing factor — n GONADOTROPIN RELEASING HORMONE …   Medical dictionary

  • Luteinizing hormone-releasing hormone — A hormone that controls sex hormones in men and women. Also called LHRH. * * * luteinizing hormone releasing hormone n GONADOTROPIN RELEASING HORMONE …   Medical dictionary

  • luteinizing hormone–releasing hormone — 1. a decapeptide hormone elaborated by the median eminence of the hypothalamus that binds to specific receptor sites on gonadotrophs of the adenohypophysis and stimulates the release of follicle stimulating hormone and luteinizing hormone. High… …   Medical dictionary

  • Luteinizing hormone — A hormone released by the pituitary gland in response to luteinizing hormone releasing hormone. Abbreviated LH, it controls the length and sequence of the female menstrual cycle, including ovulation, preparation the uterus for implantation of a… …   Medical dictionary

  • luteinizing hormone-releasing hormone — noun also luteinizing hormone releasing factor : gonadotropin releasing hormone herein …   Useful english dictionary

  • luteinizing hormone-releasing factor — I. noun see gonadotropin releasing hormone II. noun see luteinizing hormone releasing hormone …   Useful english dictionary

  • luteinizing hormone releasing factor — (= LHRF) A decapeptide releasing hormone (1182D ) that stimulates release of luteinizing hormone …   Dictionary of molecular biology

  • Luteinizing hormone — Hormone lutéinisante Pour les articles homonymes, voir LH. Hormone lutéinisante Général No CAS …   Wikipédia en Français

  • luteinizing hormone-releasing hormone — noun Date: 1970 gonadotropin releasing hormone …   New Collegiate Dictionary