Linked Life Data

8968540

Source:http://linkedlifedata.com/resource/pubmed/id/8968540

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
7
pubmed:dateCreated
1997-3-26
pubmed:abstractText
1. The effects of noradrenaline, endothelin-1, acetylcholine and sodium nitroprusside were studied in isolated pulmonary arteries obtained from 14 patients undergoing lobectomy for lung carcinoma. Seven patients had shown increased response to a bronchodilator test prior to operation. In the remaining patients (control) the bronchodilator test was negative. 2. Artery rings from patients with a positive bronchodilator response showed greater contraction to noradrenaline (pD2 = 6.44 +/- 0.1; Emax = 93 +/- 9% of response to 100 mM KCl) and endothelin-1 (pD2 = 8.92 +/- 0.1; Emax = 130 +/- 16%) than the rings from control patients (pD2 = 6.04 +/- 0.08; Emax = 56 +/- 8% for noradrenaline; pD2 = 8.29 +/- 0.1; Emax = 78 +/- 10% for endothelin-1). There was no significant difference in the contractile responses to 100 mM KCl between arteries from either group of patients. 3. Arterial rings from patients with a positive bronchodilator test achieved 96 +/- 3% of maximal relaxation in response to acetylcholine, whereas rings from control patients achieved a maximal relaxation of 72 +/- 5%. Rings from both the controls and the patients with a positive bronchodilator test achieved complete relaxation in response to sodium nitroprusside but pD2 values were significantly higher in patients with a positive bronchodilator test. 4. Removal of endothelium or treatment with NG-nitro-L-arginine methyl ester of artery rings from both the control and the patients with a positive bronchodilator test reduced the relaxation to acetylcholine (P < 0.05) but did not modify relaxation to sodium nitroprusside. 5. It is concluded that responsiveness of pulmonary arterial smooth muscle to dilator and constrictor agents is increased in patients showing reversibility of airway constriction. Thus hyperresponsiveness of airway smooth muscle may be associated with a similar phenomenon in the surrounding vascular smooth muscle.
pubmed:commentsCorrections
http://linkedlifedata.com/resource/pubmed/commentcorrection/8968540-1985092, http://linkedlifedata.com/resource/pubmed/commentcorrection/8968540-2015424, http://linkedlifedata.com/resource/pubmed/commentcorrection/8968540-2027358, http://linkedlifedata.com/resource/pubmed/commentcorrection/8968540-2605870, http://linkedlifedata.com/resource/pubmed/commentcorrection/8968540-2744134, http://linkedlifedata.com/resource/pubmed/commentcorrection/8968540-2873150, http://linkedlifedata.com/resource/pubmed/commentcorrection/8968540-2924084, http://linkedlifedata.com/resource/pubmed/commentcorrection/8968540-3195831, http://linkedlifedata.com/resource/pubmed/commentcorrection/8968540-3706878, http://linkedlifedata.com/resource/pubmed/commentcorrection/8968540-6115052, http://linkedlifedata.com/resource/pubmed/commentcorrection/8968540-6357313, http://linkedlifedata.com/resource/pubmed/commentcorrection/8968540-6987924, http://linkedlifedata.com/resource/pubmed/commentcorrection/8968540-7489799
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Dec
pubmed:issn
0007-1188
pubmed:author
pubmed:issnType
Print
pubmed:volume
119
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
1337-40
pubmed:dateRevised
2009-11-18
pubmed:meshHeading
pubmed:year
1996
pubmed:articleTitle
Increased responsiveness of human pulmonary arteries in patients with positive bronchodilator response.
pubmed:affiliation
Departamento de Fisiologia, Universidad de Valencia, Spain.
pubmed:publicationType
Journal Article, In Vitro, Research Support, Non-U.S. Gov't