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Muscarinic receptor-stimulated phosphatidylinositol turnover in the rat corpus striatum: role of muscarinic receptor subtypes and regulation

Thesis/Dissertation ·
OSTI ID:6280637
The coupling between the M1 and M2 muscarinic receptor subtypes and phosphatidylinositol (Pl) hydrolysis has been examined in the corpus striatum and cerebral cortex of the rat brain. Receptor binding by the various muscarinic ligands was assessed using a preparation of intact brain cell aggregates, under similar conditions as the assay of Pl hydrolysis. In striatal cell aggregates, (/sup 3/H)-quinuclidinyl benzilate ((/sup 3/H)-QNB) bound to a single class of muscarinic sites with high affinity, inhibition of (/sup 3/H)-QNB binding by muscarinic receptor ligands which exhibit selectivity for subtypes of the muscarinic receptor revealed the presence of both the M1 and M2 subtypes in approximately equal numbers.
Research Organization:
Rochester Univ., NY (USA)
OSTI ID:
6280637
Country of Publication:
United States
Language:
English