Linked Life Data

2410677

Source:http://linkedlifedata.com/resource/pubmed/id/2410677

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
3
pubmed:dateCreated
1985-9-19
pubmed:abstractText
The effects of Na+ on alpha 2-adrenergic receptors coupled to inhibition of adenylate cyclase have been well studied. Effects of Na+ on other receptor types also linked to adenylate cyclase inhibition are not clear. We therefore studied the effects of Na+ on the muscarinic cholinergic receptor of rat ventricular myocardium. Intact ventricular myocytes bound the muscarinic receptor antagonist radioligand [3H]quinuclidinyl benzylate with high affinity (Kd 72 +/- 18 pM) to a large number of sites (138,000 +/- 25,000/cell). In ventricular membranes, Na+ (100 mM) increased receptor affinity for radioligand two-fold and decreased receptor affinity for agonist (carbachol) twofold. Sodium was not required for and did not alter the pattern of cholinergic inhibition of adenylate cyclase in ventricular membranes. We conclude that Na+ has minimal effects on both binding and function of cardiac cholinergic receptors in rat. Our results suggest that monovalent cations are not important regulators of agonist binding and function of cardiac muscarinic cholinergic receptors.
pubmed:grant
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:issn
0160-2446
pubmed:author
pubmed:issnType
Print
pubmed:volume
7
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
476-81
pubmed:dateRevised
2007-11-14
pubmed:meshHeading
pubmed:articleTitle
Effects of Na+ on the muscarinic cholinergic receptor of rat ventricular myocytes.
pubmed:publicationType
Journal Article, Research Support, U.S. Gov't, P.H.S., Research Support, U.S. Gov't, Non-P.H.S.