Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
1
pubmed:dateCreated
1988-8-23
pubmed:abstractText
Rat anococcygeus muscles were fixed at rest or in contraction by conventional methods and prepared for electron microscopy. Myosin filaments were counted on cross sections and their density expressed per unit cytoplasmic area. In contracted muscles, the mean density increased from 86 to 168 filaments per micron 2 (1.95 times), while the density of intermediate (10 nm) filaments increased by 1.25 times. Cell cross sections from the same muscles were measured. Contraction produced a shrinkage which explains the apparent increased density of the 10 nm filaments; however an excess of 61 myosin filaments per micron 2 cannot be explained in this way. These findings provide the structural basis which quantitatively explains the birefringence changes observed in living contracted muscle (Godfraind-De Becker & Gillis, 1988). Our optical and electron optical results provide evidence for a reversible formation of myosin filaments during contraction of the rat anococcygeus muscle.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Feb
pubmed:issn
0142-4319
pubmed:author
pubmed:issnType
Print
pubmed:volume
9
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
18-29
pubmed:dateRevised
2011-11-17
pubmed:meshHeading
pubmed:year
1988
pubmed:articleTitle
Density of myosin filaments in the rat anococcygeus muscle, at rest and in contraction. II.
pubmed:affiliation
Départément de Physiologie, Université Catholique de Louvain, Bruxelles, Belgium.
pubmed:publicationType
Journal Article, Comparative Study