Mitochondrial alterations in dynamin 2-related centronuclear myopathy
نویسندگان
چکیده
منابع مشابه
Calcium homeostasis alterations in a mouse model of the Dynamin 2-related centronuclear myopathy
Autosomal dominant centronuclear myopathy (CNM) is a rare congenital myopathy characterized by centrally located nuclei in muscle fibers. CNM results from mutations in the gene encoding dynamin 2 (DNM2), a large GTPase involved in endocytosis, intracellular membrane trafficking, and cytoskeleton regulation. We developed a knock-in mouse model expressing the most frequent DNM2-CNM mutation; i.e....
متن کاملDynamin 2 the rescue for centronuclear myopathy.
Centronuclear myopathy is a lethal muscle disease. The most severe form of the disease, X-linked centronuclear myopathy, is due to mutations in the gene encoding myotubularin (MTM1), while mutations in dynamin 2 (DNM2) and amphiphysin 2/BIN1 (AMPH2) cause milder forms of myopathy. MTM1 is a lipid phosphatase, and mutations that disrupt this activity cause severe muscle wasting. In this issue of...
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MicroRNAs modulate cellular phenotypes by inhibiting expression of mRNA targets. In this study, we have shown that the muscle-specific microRNAs miR-133a-1 and miR-133a-2 are essential for multiple facets of skeletal muscle function and homeostasis in mice. Mice with genetic deletions of miR-133a-1 and miR-133a-2 developed adult-onset centronuclear myopathy in type II (fast-twitch) myofibers, a...
متن کاملReducing dynamin 2 expression rescues X-linked centronuclear myopathy.
Centronuclear myopathies (CNM) are congenital disorders associated with muscle weakness and abnormally located nuclei in skeletal muscle. An autosomal dominant form of CNM results from mutations in the gene encoding dynamin 2 (DNM2), and loss-of-function mutations in the gene encoding myotubularin (MTM1) result in X-linked CNM (XLCNM, also called myotubular myopathy), which promotes severe neon...
متن کاملA family with dynamin 2-related centronuclear myopathy without ocular involvement
A 48-year-old man presented with progressive weakness that started in the first decade of his life. He had difficulty climbing stairs since the third decade of his life. The initial neurological examination of the patient revealed a slender myopathic face with temporal muscle atrophy, without ptosis or ophthalmoplegia (Fig. 1A). Motor power examination revealed that the motor powers in his prox...
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ژورنال
عنوان ژورنال: Arquivos de Neuro-Psiquiatria
سال: 2009
ISSN: 0004-282X
DOI: 10.1590/s0004-282x2009000100023