endogenous opioid peptide


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endogenous opioid peptide

Any of a group of more than 15 substances present in the brain, certain endocrine glands, and the gastrointestinal tract. They have morphine-like analgesic properties, behavioral effects, and neurotransmitter and neuromodulator functions. Included in this group of chemicals are endorphins, enkephalins, and dynorphin.
See also: peptide
References in periodicals archive ?
Among the neurotransmitters that affect the release of gonadal secretions are endogenous opioid peptides like enkephalin, dynorphin, beta endorphins etc.
Endogenous opioid peptides are involved in CNS functions from development to immune modulation (52-53).
Modulation by endogenous opioid peptides of the secretion of LHRH from cockerel (Gallus domesticus) mediobasal hypothalamic tissue.
Involvement of corticotropin-releasing hormone and endogenous opioid peptides in prolactin-suppressed gonadotropin-releasing hormone release in vitro.
Evidence exists to suggest that alcohol administration alters the release of endogenous opioid peptides (Gianoulakis 2004; Oswald and Wand 2004).