On noxious desmin: functional effects of a novel heterozygous desmin insertion mutation on the extrasarcomeric desmin cytoskeleton and mitochondria

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On noxious desmin: functional effects of a novel heterozygous desmin insertion mutation on the extrasarcomeric desmin cytoskeleton and mitochondria.

Recent studies in desmin (-/-) mice have shown that the targeted ablation of desmin leads to pathological changes of the extrasarcomeric intermediate filament cytoskeleton, as well as structural and functional abnormalities of mitochondria in striated muscle. Here, we report on a novel heterozygous single adenine insertion mutation (c.5141_5143insA) in a 40-year-old patient with a distal myopat...

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BACKGROUND Idiopathic dilated cardiomyopathy, of which approximately 20% of cases are familial (FDCM), is a primary myocardial disorder characterized by ventricular dilatation and impaired systolic function. It is a common cause of heart failure and the need for cardiac transplantation. Although 6 chromosomal loci responsible for autosomal dominant FDCM have been mapped by linkage analysis, non...

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Ultrastructural studies have previously suggested potential association of intermediate filaments (IFs) with mitochondria. Thus, we have investigated mitochondrial distribution and function in muscle lacking the IF protein desmin. Immunostaining of skeletal muscle tissue sections, as well as histochemical staining for the mitochondrial marker enzymes cytochrome C oxidase and succinate dehydroge...

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Restrictive cardiomyopathies may have different etiologies, among which we can point out storage diseases by accumulation of different materials such as desmin. Desminopathies are uncommon diseases that progress with conduction abnormalities, peripheral myopathies, and ventricular dysfunction. The present report describes a patient with complete atrioventricular block as the initial event; he l...

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0892-6638/96/0010-031 7/sQl .50. © FASEB 317 ABSTRACT: S-100a0, the aa isoform of a subfamily of Ca2 4-binding proteins of the EF-hand type expressed in cardiac and skeletal muscle cells, is reported to inhibit the assembly of the intermediate filament subunit desinin and to stimulate the disassembly of desmin intermediate filaments in the presence of micromolar levels of free Ca2 + These effec...

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ژورنال

عنوان ژورنال: Human Molecular Genetics

سال: 2007

ISSN: 0964-6906,1460-2083

DOI: 10.1093/hmg/ddm269