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Abnormal expression of dysferlin in skeletal muscle and monocytes supports primary dysferlinopathy in patients with one mutated alleleMeznarič, Marija ...Background: In some cases, a definitive confirmation of dysferlinopathy cannotbe achieved by DNA test, because the mutation is detected in one allele only. Patients and methods: Dysferlin expression ... in skeletal muscle and peripheral blood monocytes (PBM) was studied by Western blot in two unrelated adult patients. The comparative C(T) method (DeltaDeltaC(T) ) was used to calculate relative changes in dysferlin mRNA determined from real-time quantitative PCR experiments. The dysferlin gene was studied by direct sequencing of cDNA and genomic DNA and by Multiplex Ligation-dependent Probe Amplification (MLPA) analysis. Results: A comparable severe reduction in dysferlin was demonstrated in both skeletal muscle and PBM. The expression of dysferlin mRNA was significantly reduced. A novel mutation in exon 47 (c.5289G>C) of the dysferlin gene in the heterozygous state, causing an amino acid change (p.Glu1763Asp), was detected in both patients. The MLPA analysis did not reveal any deletion or duplication. Conclusions: Dysferlin and/or dysferlin mRNA abnormalities are diagnostic for dysferlinopathy when mutational analysis detects a mutation in one allele only. Analysis of dysferlin mRNA can be helpful for distinguishing symptomatic heterozygotes from such patients.Source: European journal of neurology. - ISSN 1351-5101 (Vol. 18, issue 7, 2011, str. 1021-1023)Type of material - article, component partPublish date - 2011Language - englishCOBISS.SI-ID - 28533721
Author
Meznarič, Marija |
Peterlin, Borut, 1963- |
Zidar, Janez
Topics
Muscular Dystrophy |
Genetics |
Muscle, Skeletal |
Chemistry |
Muscle Proteins |
Heterozygote |
Rna, Messenger |
Dna Mutational Analysis |
Monocytes |
Chemistry |
Blotting, Western |
Mišica skeletna |
Heterozigota |
RNA, prenašalna |
Mišične beljakovine |
DNA mutacijska analiza |
Blot, Western |
Monociti
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Database name | Field | Year |
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Meznarič, Marija | 04905 |
Peterlin, Borut, 1963- | 10458 |
Zidar, Janez | 08780 |
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