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re·leas·ing fac·tors (RF),
1. any substance, usually of hypothalamic origin, capable of accelerating the rate of secretion of a given hormone by the anterior pituitary gland;
2. factors required in the termination phase of either RNA biosynthesis or protein biosynthesis. Synonym(s): termination factor
3. colloquial shortened form for the HMG-CoA reductase inhibitors used as antihyperlipidemic agents, whose generic names end with the suffix statin. Synonym(s): statins
re·leas·ing fac·tors(rĕ-lēs'ing fak'tŏrz)
1. Substances, usually of hypothalamic origin, capable of accelerating the rate of secretion of a given hormone by the anterior pituitary gland.
releasing factors; RFs range of hormones, produced and released into the hypothalamic portal system, triggering release of specific hormones from anterior pituitary (e.g. thyroid hormone RF; growth hormone RF)
hypothalamic hormones that stimulate the secretion of effector hormones in the pituitary, e.g. follicle-stimulating hormone releasing hormone.