Linked Life Data

3638283

Source:http://linkedlifedata.com/resource/pubmed/id/3638283

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
9
pubmed:dateCreated
1986-10-8
pubmed:abstractText
The influence of vanadate upon the adrenergic response of the rabbit iris (dilation) was examined in vivo, while the effects of vanadate upon adrenergic responses of the rabbit ileum and guinea pig vas deferens were investigated in vitro. Intravenously administered vanadate (2 mg/Kg) sensitized the iris to topically administered epinephrine; a small quantity of epinephrine, that elicited no change of pupil size following topical administration to the eye in the normal rabbit, produced a marked pupillary dilation in animals treated systemically with vanadate. The response of the isolated ileum to vanadate (1-10 micrograms) was identical to that elicited by norepinephrine or epinephrine. Brief exposure of the ileum to vanadate, norepinephrine, or epinephrine resulted in a transient cessation of rhythmic activity and reduction of mean tension. When the ileum was superfused continuously with solutions containing vanadate (10 micrograms/ml; 5.4 X 10(-5) M), the rhythmic activity and mean tension returned to control values within several minutes, suggesting tachyphylaxis. Exposure of the guinea pig vas deferens to vanadate did not elicit a contractile response. However, when the vas deferens was superfused continuously (greater than 60 min) with vanadate (5.4 X 10(-5) M), both the amplitude and duration of the contraction elicited by epinephrine were increased. Consistent with the above findings is the hypothesis that vanadate might inhibit the mechanisms responsible for the removal of epinephrine or norepinephrine from the site of action within a tissue.
pubmed:grant
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Sep
pubmed:issn
0146-0404
pubmed:author
pubmed:issnType
Print
pubmed:volume
27
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
1336-41
pubmed:dateRevised
2007-11-14
pubmed:meshHeading
pubmed:year
1986
pubmed:articleTitle
Modulation by vanadate of the adrenergic characteristics of the iris, ileum, and vas deferens.
pubmed:publicationType
Journal Article, In Vitro, Research Support, U.S. Gov't, P.H.S.