Linked Life Data

4049576

Source:http://linkedlifedata.com/resource/pubmed/id/4049576

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
4
pubmed:dateCreated
1985-11-18
pubmed:abstractText
The effects of hyperosmolar (390, 590 mosm/kg) and hypoosmolar (260 mosm/kg) solutions on myogenic spontaneous contractile activity and response to nerve stimulation were studied on strips of rat detrusor muscle in vitro. In isotonic (290 mosm/kg) solution the mean spontaneous contractile activity was 2.1 +/- 0.6% and the amplitude of the largest spontaneous contractions was 9.8 +/- 3.0% of maximal response to nerve stimulation. In 390 mosm/kg the frequency of spontaneous contractions decreased, but due to a fourfold increase of contraction amplitude a threefold increase of mean contractile activity was recorded. In 260 mosm/kg a similar contraction pattern as in 290 mosm/kg was seen. The spontaneous contractions were resistant to tetrodotoxin (10(-5) g/ml) in all osmolalities. In 590 mosm/kg the spontaneous activity had ceased, and a continuous contracture (resistant to tetrodotoxin) was observed with an amplitude of 41 +/- 1% of the maximal response to nerve stimulation at 290 mosm/kg. Similar maximal responses to nerve stimulation were obtained in 260, 290, and 390 mosm/kg. The frequency-response relation in 390 mosm/kg had a leftward shift at low frequencies. In 590 mosm/kg no response to nerve stimulation or acetylcholine was noted, but the preparations contracted vigorously following depolarization with high-K+ solution.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:issn
0042-1138
pubmed:author
pubmed:issnType
Print
pubmed:volume
40
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
196-200
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
1985
pubmed:articleTitle
Effects of variations in extracellular osmolality on spontaneous contractile activity and response to nerve stimulation in rat detrusor muscle in vitro.
pubmed:publicationType
Journal Article, Comparative Study, In Vitro, Research Support, Non-U.S. Gov't