TY - JOUR
T1 - Affinity of nortriptyline to muscarinic receptors in the bladder and ileum of man and guinea-pig
AU - Rubinstein, Rachel
AU - Nissenkorn, Israel
AU - Cohen, Sasson
PY - 1984/4/13
Y1 - 1984/4/13
N2 - The antagonism by nortriptyline of carbachol- or urecholine-induced contractions was studied in strips of ileum and bladder derived from man and guinea-pig. Analyses of the results by the dose ratio method (Schild plots) showed significant differences in the affinities of the relevant muscarinic receptors to the antagonist: The Ki values in μM were as follows: Human ileum, 0.938; human bladder, 0.298; guinea-pig ileum, 0.159; guinea-pig bladder, 0.333 and 0.453. In man, the higher affinity of the drug to the receptors in the bladder than to those in the ileum may be of consequence in its therapeutic application as an antienuretic agent.
AB - The antagonism by nortriptyline of carbachol- or urecholine-induced contractions was studied in strips of ileum and bladder derived from man and guinea-pig. Analyses of the results by the dose ratio method (Schild plots) showed significant differences in the affinities of the relevant muscarinic receptors to the antagonist: The Ki values in μM were as follows: Human ileum, 0.938; human bladder, 0.298; guinea-pig ileum, 0.159; guinea-pig bladder, 0.333 and 0.453. In man, the higher affinity of the drug to the receptors in the bladder than to those in the ileum may be of consequence in its therapeutic application as an antienuretic agent.
UR - http://www.scopus.com/inward/record.url?scp=0021340117&partnerID=8YFLogxK
U2 - 10.1016/0014-2999(84)90311-X
DO - 10.1016/0014-2999(84)90311-X
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AN - SCOPUS:0021340117
SN - 0014-2999
VL - 100
SP - 21
EP - 27
JO - European Journal of Pharmacology
JF - European Journal of Pharmacology
IS - 1
ER -