Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
15
pubmed:dateCreated
1990-6-7
pubmed:abstractText
The affinities of muscarinic agonists and antagonists were determined by autoradiography and image analysis in selected areas of the rat brain. IC50 values and Hill coefficients for the inhibition of the binding of 0.2 nM [3H]-QNB to dentate gyrus, superior colliculus, rhomboid thalamus and substantia nigra were measured in coronal sections. Pirenzepine displayed a high affinity for receptors in the dentate gyrus and AF-DX 116, the superior colliculus. Both pirenzepine and AF-DX 116 had high affinities for the substantia nigra and low affinities for the rhomboid thalamus. Gallamine displayed a 50-fold preference for superior colliculus over dentate gyrus receptors. Amitriptyline was less selective, showing a modest preference for substantia nigra receptors and 4-DAMP was essentially nonselective. Carbachol was the most selective agonist with a 4000-fold preference for superior colliculus over dentate gyrus receptors. Other agonists except RS 86 were also selective for superior colliculus receptors in the order carbachol much greater than arecoline greater than bethanechol greater than McN A343 = oxotremorine = pilocarpine.
pubmed:grant
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:issn
0024-3205
pubmed:author
pubmed:issnType
Print
pubmed:volume
46
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
1051-8
pubmed:dateRevised
2007-11-14
pubmed:meshHeading
pubmed:year
1990
pubmed:articleTitle
Identification of four brain areas each enriched in a unique muscarinic receptor subtype.
pubmed:affiliation
Department of Medicinal and Biological Chemistry, University of Toledo College of Pharmacy, Ohio 43606.
pubmed:publicationType
Journal Article, Comparative Study, Research Support, U.S. Gov't, P.H.S.