Linked Life Data

96886

Source:http://linkedlifedata.com/resource/pubmed/id/96886

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
3
pubmed:dateCreated
1978-9-15
pubmed:abstractText
Strips of the myocardium from the auricula atria of patients suffering from mitral stenosis (MS) and septal defects of the heart (SDH) removed during the operation were treated with ethylenediaminetetraacetic acid (DETA)--3mM--to increase the cell membrane permeability (scarification). The mechanical response of the contractile proteins to the change in the Ca2+ was recorded in the ethylene-hexaaminetetraacetic acid (EHTA)--3mM--against the background of increased membrane permeability to the Ca-EHTA complex permitting to regulate Ca2+ concentration in myofibrillae from 10(-9) to 10(-4)M. As shown, with the same threshold concentrations (5.10(-8)M) and saturation concentrations (10(-4)M) of Ca2+ the strips from the patients with MS developed the maximal tension per cross section unit of the strip half as great as the preparations from patients with SDH, this indicating a possible affection of the contractile proteins in the hearts of patients with MS. The ratio between the tension amplitudes under conditions of a complete calcium activation of the contractile proteins and a single isometric contraction for the preparations obtained from the patients with MS was 8 to 10, and with SDH--from 4 to 5. It is supposed that this was the result of more pronounced changes in the apparatus of electromechanical conjugation of the myocardium of patients suffering from MS.
pubmed:language
rus
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Mar
pubmed:issn
0365-9615
pubmed:author
pubmed:issnType
Print
pubmed:volume
85
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
284-7
pubmed:dateRevised
2008-10-8
pubmed:meshHeading
pubmed:year
1978
pubmed:articleTitle
[Contractile reaction of the myocardium of patients with heart diseases to chemical scarification of cell membranes].
pubmed:publicationType
Journal Article, Comparative Study, English Abstract