Linked Life Data

3789146

Source:http://linkedlifedata.com/resource/pubmed/id/3789146

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
6 Pt 1
pubmed:dateCreated
1987-1-20
pubmed:abstractText
A special probe was validated to record in situ pyloric sphincter activity by changes in fiber-optic light transmission and sleeve pressure associated with the propagation of antroduodenal contractions, the onset of the phase of regular spiking activity (RSA) of the migrating myoelectric complex, the RSA-like events elicited by duodenal acidification, and the pharmacological stimulation of the gastroduodenal junction. Rapid changes in light transmission associated with antroduodenal contractions were super-imposed on slow variations, suggesting the existence of both phasic and tonic components in pyloric sphincter activity. The phasic activity coincided with isolated closures of the pyloric orifice, closures associated with antral or duodenal bulb contractions, and with long-lasting rhythmic closures during the development of the RSA phase. The resting tone increased during antral and/or duodenal stimulation and by feeding "appetizers" but decreased during antroduodenal quiescence and at the onset of general anesthesia. It is concluded that the ovine pylorus predominantly exists in a state of low resting tone but can act as a true sphincter with both inherent tonic and phasic activity.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Dec
pubmed:issn
0002-9513
pubmed:author
pubmed:issnType
Print
pubmed:volume
251
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
G804-14
pubmed:dateRevised
2008-11-21
pubmed:meshHeading
pubmed:year
1986
pubmed:articleTitle
Physiological characteristics of ovine pyloric sphincter.
pubmed:publicationType
Journal Article