Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
6
pubmed:dateCreated
1977-1-25
pubmed:abstractText
Minoxidil has a direct dilator effect on the systemic arterial smooth muscle. It is potentially an important drug in the treatment of systemic hypertension, especially when combined with beta blockade, which is used to control the associated tachycardia and increase in cardiac output. However, recent observations have suggested that minoxidil might cause pulmonary hypertension. Consequently, we examined the acute effect of monoxidil and propranolol, separately and in combination, on the pulmonary vasculature of the anesthetized dog and the awake calf during normoxia and hypoxia. In both species minoxidil reduced pulmonary vascular resistance. In the dogs this appeared to be the result of a direct action on the pulmonary vascular smooth muscle and in the cattle it was secondary to beta-receptor stimulation. Propranolol alone in the cattle increased the pulmonary pressor response to hypoxia. While we have not examined the possibility that chronic administration of minoxidil might cause pulmonary hypertension by some other mechanism, our acute studies suggest that it reduces, rather than increases, pulmonary vascular resistance. Furthermore, there seems to be a species difference in the mode of its action in dogs and cattle.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
AIM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Dec
pubmed:issn
0022-2143
pubmed:author
pubmed:issnType
Print
pubmed:volume
88
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
885-94
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
1976
pubmed:articleTitle
Minoxidil reduces pulmonary vascular resistance in dogs and cattle.
pubmed:publicationType
Journal Article, Research Support, U.S. Gov't, P.H.S.