opioid peptides

opioid peptides (ōˑ·pē·oid pepˑ·tīdz),

n.pl protein molecules found in the body that are responsible for endogenous analgesia and other functions. The three major classes are beta-endorphins, dynorphins, and enkephalins. See also endorphins and enkephalins.
References in periodicals archive ?
Bryan Fry, a researcher from the University of Queensland, Australia, said in a statement Thursday: "The fish injects other fish with opioid peptides that act like heroin or morphine, inhibiting pain rather than causing it.
During childhood, the LHRH surge is repressed through inhibitory signals in the hypothalamus mediated by [gamma]-aminobutyric acid and opioid peptides (Terasawa and Fernandez 2001).
Opioid activation leads to the processing of opioid peptides from their precursor, proenkephalin and the simultaneous release of antibacterial peptides contained within the precursor as well.
Novel opioid peptides derived from casein (beta-casomorphins).
Opioids bind to opiate receptors within the central nervous system (CNS) to activate endogenous opioid peptides, such as endorphins and enkephalins, and produce a change in perception of pain known as analgesia (Vallerand, Sanoski, & Deglin, 2014).
The research on the mechanism of acupuncture analgesia shows that acupuncture may cause nervous system to release opioid peptides with analgesic effect.
In CKD-associated pruritus, it is believed that there exists an imbalance between the endogenous opioid peptides that stimulate and inhibit pruritus pathways (Patel et al.
Among the neurotransmitters that affect the release of gonadal secretions are endogenous opioid peptides like enkephalin, dynorphin, beta endorphins etc.
Identification of endogenous peptide ligands (6,7) that bind to their complementary receptors followed and they were termed, respectively, opioid peptides and opioid receptors.
In the early 1990s, it was hypothesized that autism can be caused or aggravated by opioid peptides.