beta-endorphin-(1-27) and Pain

beta-endorphin-(1-27) has been researched along with Pain* in 1 studies

Other Studies

1 other study(ies) available for beta-endorphin-(1-27) and Pain

Article	Year
Beta-endorphin-(1-27) is a naturally occurring antagonist to etorphine-induced analgesia. Proceedings of the National Academy of Sciences of the United States of America, 1985, Volume: 82, Issue:10 The potent opioid peptide beta-endorphin is found in the brain and pituitary with two related fragments, beta-endorphin-(1-27) and beta-endorphin-(1-26). The fragments retain substantial opioid-receptor binding activity but are virtually inactive analgesically. beta-Endorphin-(1-27) inhibits beta-endorphin-induced and etorphine-induced analgesia when coinjected intracerebroventricularly into mice. Antagonism by competition at the same site(s) is suggested from parallel shifts of the dose-response curves of etorphine or beta-endorphin in the presence of beta-endorphin-(1-27). Its potency is 4-5 times greater than that of the opiate antagonist naloxone. beta-Endorphin-(1-26) does not antagonize the antinociceptive action of etorphine or beta-endorphin in doses up to 500 pmol per animal. Topics: Animals; beta-Endorphin; Binding, Competitive; Dose-Response Relationship, Drug; Endorphins; Etorphine; Male; Mice; Morphinans; Naloxone; Pain; Peptide Fragments; Receptors, Opioid	1985

Article

Year

Beta-endorphin-(1-27) is a naturally occurring antagonist to etorphine-induced analgesia.

Proceedings of the National Academy of Sciences of the United States of America, 1985, Volume: 82, Issue:10

The potent opioid peptide beta-endorphin is found in the brain and pituitary with two related fragments, beta-endorphin-(1-27) and beta-endorphin-(1-26). The fragments retain substantial opioid-receptor binding activity but are virtually inactive analgesically. beta-Endorphin-(1-27) inhibits beta-endorphin-induced and etorphine-induced analgesia when coinjected intracerebroventricularly into mice. Antagonism by competition at the same site(s) is suggested from parallel shifts of the dose-response curves of etorphine or beta-endorphin in the presence of beta-endorphin-(1-27). Its potency is 4-5 times greater than that of the opiate antagonist naloxone. beta-Endorphin-(1-26) does not antagonize the antinociceptive action of etorphine or beta-endorphin in doses up to 500 pmol per animal.

Topics: Animals; beta-Endorphin; Binding, Competitive; Dose-Response Relationship, Drug; Endorphins; Etorphine; Male; Mice; Morphinans; Naloxone; Pain; Peptide Fragments; Receptors, Opioid

1985