These tools will no longer be maintained as of December 31, 2024. Archived website can be found here. PubMed4Hh GitHub repository can be found here. Contact NLM Customer Service if you have questions.


Pubmed for Handhelds

PUBMED FOR HANDHELDS

Search MEDLINE/PubMed

  • Title: Receptor binding profiles of some selective muscarinic antagonists.
    Author: Nilvebrant L, Sparf B.
    Journal: Eur J Pharmacol; 1988 Jun 22; 151(1):83-96. PubMed ID: 3416928.
    Abstract:
    The binding of hexahydrosiladifenidol, procyclidine, 4-DAMP (4-diphenylacetoxy-N-methylpiperidine) and AF-DX 116 to muscarinic receptors in the heart, ileum, urinary bladder, parotid gland and cerebral cortex from guinea pig was studied in competition experiments with (-)-[3H]QNB. The affinity of AF-DX 116 was higher in the heart than in the cortex and it was extremely low in the parotid gland. The affinities of hexahydrosiladefinidol, procyclidine and 4-DAMP were higher in the cortex and parotid gland than in the heart, bladder and ileum. Hexahydrosiladifenidol and 4-DAMP recognized two classes of muscarinic binding sites in the cortex. However, in contrast to functional data, binding results showed that 4-DAMP hexahydrosiladifenidol and procyclidine did not distinguish between the sites in the smooth muscles and those in the heart. Nevertheless, the present data support the view that the putative M2-receptors are heterogeneous, since the four drugs examined were found to distinguish between the muscarinic binding sites in the parotid gland and those in smooth muscles and heart.
    [Abstract] [Full Text] [Related] [New Search]