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Comparative activity of endorphins on the opiate receptors



Comparative activity of endorphins on the opiate receptors



Comptes Rendus Hebdomadaires des Seances de l'Academie des Sciences. Serie D: Sciences Naturelles 285(3): 257-260



Displacement of naloxone from membranes of Rat brain by alpha, beta and gamma-endorphins with and without Na+ in the incubating medium has been studied. beta-endorphin shows a higher affinity for the opiate receptors and a stronger agonist property than morphine. alpha and gamma-endorphins have a much lower affinity than morphine and a marked antagonist characteristic. This study suggests the possibility of naturally occurring antagonists of the opiate receptors.

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Accession: 039614477

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PMID: 198160


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