Linked Life Data

9350834

Source:http://linkedlifedata.com/resource/pubmed/id/9350834

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
2-3
pubmed:dateCreated
1998-1-29
pubmed:abstractText
In vibratome-cut slices from rat striatum and in the presence of 10 mM LiCl, the cholinergic agonist carbachol stimulated the accumulation of total [3H]inositol phosphates (EC50 11+/-1 microM and maximum effect 546+/-36% of basal). The response to 100 microM carbachol (497+/-24% of basal) was inhibited by muscarinic antagonists (1 microM), the rank order of efficacy being 4-diphenylacetoxy-N-methylpiperidine methiodide (4-DAMP; 100% inhibition) approximately pirenzepine (98+/-3%) > p-fluoro analog of hexahydro-sila-difenidol (pFHHSiD; 90+/-3%) >> methoctramine (32+/-7%) approximately tropicamide (30+/-10%). Antagonist inhibition curves best fit to a single-site model for 4-DAMP (pKi 8.9+/-0.2) whereas, for both pirenzepine and pFHHSiD, the best fit was to the two-site model. The pKi values for the high-affinity (8.3+/-0.2) and low-affinity (6.9+/-0.2) components for pirenzepine-mediated inhibition corresponded to those reported for M1 and M3 receptors, respectively. The pKi values for the high-affinity (8.2+/-0.3) and low-affinity (7.0+/-0.2) components for pFHHSiD inhibition were in good agreement with those reported for M3 and M1 receptors, respectively. Altogether these results indicate that carbachol-induced [3H]inositol phosphate formation in rat striatal slices is mediated by both M1 and M3 muscarinic receptors.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Sep
pubmed:issn
0304-3940
pubmed:author
pubmed:issnType
Print
pubmed:day
19
pubmed:volume
233
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
69-72
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
1997
pubmed:articleTitle
Carbachol-induced inositol phosphate formation in rat striatum is mediated by both M1 and M3 muscarinic receptors.
pubmed:affiliation
Departamento de Fisiología, Biofísica y Neurociencias, Centro de Investigación y de Estudios Avanzados, México, D.F., Mexico.
pubmed:publicationType
Journal Article, In Vitro