Autoradiographic localization of opioid receptor types in the rat small intestine.
The selective mu and delta ligands [3H]DAGO and [3H]DPDPE have been used to investigate the distribution of specific opioid subtypes in the rat small intestine by in vitro autoradiography. There was a greater density of [3H]DPDPE binding at regions of the villi and crypts than [3H]DAGO binding. These results suggest that the opioid receptors located in these regions are predominantly of the delta subtype.
Dashwood
M R
MR
Department of Physiology, Royal Free Hospital School of Medicine, London, England.
Sykes
R M
RM
Thompson
C S
CS
D000818:Animals; D001345:Autoradiography; D020875:Enkephalin, Ala(2)-MePhe(4)-Gly(5)-; D020881:Enkephalin, D-Penicillamine (2,5)-; D004745:Enkephalins / Q000378:metabolism; D007421:Intestine, Small / Q000166:cytology / Q000378:metabolism*; D008297:Male; D051381:Rats; D011919:Rats, Inbred Strains; D011957:Receptors, Opioid / Q000378:metabolism*; D017465:Receptors, Opioid, delta; D017450:Receptors, Opioid, mu; D014316:Tritium
D004745:Enkephalins; D011957:Receptors, Opioid; D017465:Receptors, Opioid, delta; D017450:Receptors, Opioid, mu; D014316:Tritium; D020875:Enkephalin, Ala(2)-MePhe(4)-Gly(5)-; D020881:Enkephalin, D-Penicillamine (2,5)-