Linked Life Data

2376753

Source:http://linkedlifedata.com/resource/pubmed/id/2376753

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
2-3
pubmed:dateCreated
1990-9-5
pubmed:abstractText
16 patients representing 7 different pedigrees exhibited an unusual, adult onset limb-girdle myopathy with typical clinical hallmarks. In a majority of cases there was evidence of an autosomal dominant inheritance. A prominent early finding in all cases was respiratory muscle weakness, and in many of these an acute respiratory incapacity was the reason for the first neurological examination. Neck flexor and sometimes foot extensor weakness were other early symptoms. The clinical picture seems to be at variance with that of the more well known hereditary myopathies. Electrophysiological analysis confirmed a myopathy and serum muscle enzyme concentrations were normal or slightly elevated. Muscle biopsy findings revealed myofibrillar changes which, at the light microscopy level, included plaques that stained strongly with rhodamine-conjugated phalloidin, a specific marker for F-actin. At the ultrastructural level, these plaques were observed to be composed of moderately dense, thin filaments and were related to splitting of Z-discs or formed extensions from Z-discs. We believe that the muscle biopsy changes revealed by cytochemical and ultrastructural observations indicate defective myofibrillogenesis, and the possibility of defective actin polymerization is discussed. A conclusive answer requires further immunocytochemical and immunoelectrophoretic studies and possibly the application of molecular genetics.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:status
MEDLINE
pubmed:month
May
pubmed:issn
0022-510X
pubmed:author
pubmed:issnType
Print
pubmed:volume
96
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
211-28
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
1990
pubmed:articleTitle
Myopathy with respiratory failure and typical myofibrillar lesions.
pubmed:affiliation
Department of Neurology, Karolinska Hospital, Stockholm, Sweden.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't