| 释义 |
releasing factor
re·leas·ing factor (rĭ-lē′sĭng)n. Any of several hormones secreted by the hypothalamus that stimulate the anterior part of the pituitary gland to release certain hormones.releas′ing fac`tor
n. a substance usu. of hypothalamic origin that triggers the release of a hormone from an endocrine gland. Thesaurus| Noun | 1. | releasing factor - a substance produced by the hypothalamus that is capable of accelerating the secretion of a given hormone by the anterior pituitary glandreleasing hormone, RFfactor - anything that contributes causally to a result; "a number of factors determined the outcome"GHRF, growth hormone-releasing factor - a releasing factor that accelerates the secretion of growth hormone by the anterior pituitary body | | 2. | releasing factor - any of several hormones produced in the hypothalamus and carried by a vein to the anterior pituitary gland where they stimulate the release of anterior pituitary hormones; each of these hormones causes the anterior pituitary to secrete a specific hormonehypothalamic releasing factor, hypothalamic releasing hormone, releasing hormone, RHendocrine, hormone, internal secretion - the secretion of an endocrine gland that is transmitted by the blood to the tissue on which it has a specific effect |
Releasing Factor
Releasing Factor (also releasing hormone), one of a group of neurohormones formed in the hypothalamus that act on the cells of the anterior lobe of the pituitary gland and stimulate or inhibit the secretion of tropic hormones into the blood. Extracts from the hypothalamus of humans and many vertebrate animals have been shown to contain specific releasing factors that stimulate the pituitary gland to release adrenocorticotropic hormone, luteinizing hormone, thyrotropin, folliclestimulating hormone, growth hormone, melanocyte-stimulating hormone, and prolactin. Releasing factors that inhibit the secretion of prolactin, melanocyte-stimulating hormone, and growth hormone have also been isolated. All releasing factors appear to be peptides. For example, the releasing factor that stimulates the secretion of thyrotropin is a tripeptide—pyroglutamylhistidylpropylamide. This factor has been synthesized and is now used in medicine to detect local disorders of the hypothalamus, pituitary, and thyroid glands. REFERENCESIudaev, N. A., and Z. F. Evtikhina. “Sovremennye predstavleniia o gipotalamicheskikh rilizing-faktorakh.” In Sovremennye voprosy endokrinologii, fase. 4. Moscow, 1972.
“Hypophysiotropic Hormones of the Hypothalamus: Assay and Chemistry.” Proceedings of the Workshop Conference…. Baltimore, 1970.V. M. SAMSONOVA releasing factor
releasing factor (rĭ-lē′sĭng)n. Any of several hormones secreted by the hypothalamus that stimulate the anterior part of the pituitary gland to release certain hormones.releasing factor a special form of REGULATING FACTOR that stimulates the release of hormones into the blood; inhibiting factors prevent the release of the hormone.releasing factor
Related to releasing factor: corticotropin releasing factor, growth hormone releasing factorSynonyms for releasing factornoun a substance produced by the hypothalamus that is capable of accelerating the secretion of a given hormone by the anterior pituitary glandSynonymsRelated Words- factor
- GHRF
- growth hormone-releasing factor
noun any of several hormones produced in the hypothalamus and carried by a vein to the anterior pituitary gland where they stimulate the release of anterior pituitary hormonesSynonyms- hypothalamic releasing factor
- hypothalamic releasing hormone
- releasing hormone
- RH
Related Words- endocrine
- hormone
- internal secretion
|