Linked Life Data

8112401

Source:http://linkedlifedata.com/resource/pubmed/id/8112401

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
3
pubmed:dateCreated
1994-3-31
pubmed:abstractText
The modulatory effects of pertussis toxin pretreatment on responses mediated via beta-adrenoceptors and muscarinic acetylcholine receptors were investigated in isolated rat hearts and aortic rings 4 days after in vivo administration of pertussis toxin. In isolated hearts, pertussis toxin increased heart weight and baseline coronary flow values but did not effect baseline left ventricular pressure values. In unpaced hearts, pertussis toxin inhibited the arecoline-induced cardiac standstill, while in paced hearts, the beta 2-adrenoceptor agonist salbutamol produced a dose-dependent vasodilation with similar characteristics in pertussis toxin and control preparations. Pertussis toxin had no effect on myocardial or aortic cyclic nucleotide levels and the myocardial beta-adrenoceptor density (Bmax) and dissociation constant (Kd). In precontracted aortic rings, pertussis toxin had no effect on the salbutamol or arecoline induced vasorelaxation. In summary, we demonstrated a reduced cholinergic responsiveness in isolated hearts but an intact beta 2-adrenoceptor pathway in isolated hearts as well as in isolated aortic rings after pertussis toxin pretreatment. In aortic rings no change in muscarinic acetylcholine receptor responsiveness occurred.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Dec
pubmed:issn
0014-2999
pubmed:author
pubmed:issnType
Print
pubmed:day
21
pubmed:volume
250
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
415-22
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
1993
pubmed:articleTitle
Modulation by pertussis toxin of salbutamol- and arecoline-induced effects in the isolated heart and aorta of the rat.
pubmed:affiliation
Faculty of Pharmacy, University Utrecht, Netherlands.
pubmed:publicationType
Journal Article, In Vitro