Stereospecific effects of opiate antagonists on superficial and deep nociception and on motor activity suggest involvement of endorphins on different opioid receptors.
D000818:Animals; D004723:Endorphins / Q000378:metabolism*; D008297:Male; D051379:Mice; D009043:Motor Activity / Q000187:drug effects*; D009270:Naloxone / Q000494:pharmacology; D009292:Narcotic Antagonists / Q000494:pharmacology*; D009619:Nociceptors / Q000187:drug effects / Q000502:physiology*; D051381:Rats; D011957:Receptors, Opioid / Q000187:drug effects / Q000378:metabolism*; D013237:Stereoisomerism; D013329:Structure-Activity Relationship
D004723:Endorphins; D009292:Narcotic Antagonists; D011957:Receptors, Opioid; D009270:Naloxone