Linked Life Data

3343001

Source:http://linkedlifedata.com/resource/pubmed/id/3343001

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
1
pubmed:dateCreated
1988-4-7
pubmed:abstractText
The role of myogenic electrical activity in the coordination of circumferential contraction of the human colon circular muscle was investigated. Five suction electrodes were placed (5-7 mm apart) on isolated rings of human colon and simultaneously electrical and motor activities were measured. In normal Krebs solution, the slow waves were not synchronised in most preparations studied. The electrical activities at the different recording sites were different with respect to slow wave frequency and amplitude, and amount of spiking activity. This resulted in irregular contractile activity. Cholinergic stimulation resulted in the development of a specific pattern of electrical activity: periodic slow wave activity with superimposed spiking activity which was synchronised over the length of the segment studied. This synchronised electrical activity resulted in regular phasic contractions at the frequency of the bursts of electrical activity (approximately 1/min). The response to carbachol was mediated by muscarinic receptors since it was blocked by atropine. The periodic activity in the continuous presence of carbachol was not the result of periodic input of neural activity as it occurred in the presence of TTX. Intrinsic properties of the muscle cells were responsible for the carbachol induced pattern of activity. The present study presents evidence that the electrical correlate of circumferential contractions is different in man compared with the most commonly studied animal models. It is a specific, stimulus induced pattern of myogenic activity. Its characteristics closely resemble those of a particular pattern of in vivo recorded activity referred to as the 'long spike bursts'.
pubmed:commentsCorrections
http://linkedlifedata.com/resource/pubmed/commentcorrection/3343001-3019146, http://linkedlifedata.com/resource/pubmed/commentcorrection/3343001-3525046, http://linkedlifedata.com/resource/pubmed/commentcorrection/3343001-3525050, http://linkedlifedata.com/resource/pubmed/commentcorrection/3343001-3699550, http://linkedlifedata.com/resource/pubmed/commentcorrection/3343001-3812683, http://linkedlifedata.com/resource/pubmed/commentcorrection/3343001-3955442, http://linkedlifedata.com/resource/pubmed/commentcorrection/3343001-3956938, http://linkedlifedata.com/resource/pubmed/commentcorrection/3343001-3965340, http://linkedlifedata.com/resource/pubmed/commentcorrection/3343001-4038956, http://linkedlifedata.com/resource/pubmed/commentcorrection/3343001-5096787, http://linkedlifedata.com/resource/pubmed/commentcorrection/3343001-5111245, http://linkedlifedata.com/resource/pubmed/commentcorrection/3343001-6209389, http://linkedlifedata.com/resource/pubmed/commentcorrection/3343001-6618099, http://linkedlifedata.com/resource/pubmed/commentcorrection/3343001-6624916, http://linkedlifedata.com/resource/pubmed/commentcorrection/3343001-6631753, http://linkedlifedata.com/resource/pubmed/commentcorrection/3343001-7239126, http://linkedlifedata.com/resource/pubmed/commentcorrection/3343001-7250637, http://linkedlifedata.com/resource/pubmed/commentcorrection/3343001-7429310
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
AIM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Jan
pubmed:issn
0017-5749
pubmed:author
pubmed:issnType
Print
pubmed:volume
29
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
10-6
pubmed:dateRevised
2009-11-18
pubmed:meshHeading
pubmed:year
1988
pubmed:articleTitle
Electrical correlate of circumferential contractions in human colonic circular muscle.
pubmed:affiliation
Intestinal Disease Research Unit, McMaster University, Hamilton, Ontario, Canada.
pubmed:publicationType
Journal Article, In Vitro, Research Support, Non-U.S. Gov't