Functional significance of dystrophin-positive fibers in Duchenne and Becker muscular dystrophy. 1996

H A Taşdemir, and E Kotiloğlu, and H Topaloğlu, and G Kale, and D P Dinçer, and K Yalaz, and Y Renda
Department of Pediatrics, Atutürk University Faculty of Medicine, Erzurum, Turkey.

In this study, the ratios of dystrophin-positive (+), partially deficient (+/-), and deficient (-) fibers were investigated immunohistochemically in 28 Duchenne muscular dystrophy (DMD) and 4 Becker muscular dystrophy (BMD) patients using Dys I (midrod), Dys II (COOH-terminal), and Dys III (NH2-terminal) antibodies. In the biopsies of DMD patients, Dys II was negative in all cases; the mean ratio of Dys I (+) fibers was 0.05%, Dys I (+/-) 1.02%, Dys III (+) 0.27%, and Dys III (+/-) 0.75%. There was no correlation between these (+) or (+/-) fibers and the severity of clinical or laboratory findings. In BMD patients, it was shown that amino and carboxyl terminals of dystrophin could be affected in addition to the midportion.

UI MeSH Term Description Entries
D007150 Immunohistochemistry Histochemical localization of immunoreactive substances using labeled antibodies as reagents. Immunocytochemistry,Immunogold Techniques,Immunogold-Silver Techniques,Immunohistocytochemistry,Immunolabeling Techniques,Immunogold Technics,Immunogold-Silver Technics,Immunolabeling Technics,Immunogold Silver Technics,Immunogold Silver Techniques,Immunogold Technic,Immunogold Technique,Immunogold-Silver Technic,Immunogold-Silver Technique,Immunolabeling Technic,Immunolabeling Technique,Technic, Immunogold,Technic, Immunogold-Silver,Technic, Immunolabeling,Technics, Immunogold,Technics, Immunogold-Silver,Technics, Immunolabeling,Technique, Immunogold,Technique, Immunogold-Silver,Technique, Immunolabeling,Techniques, Immunogold,Techniques, Immunogold-Silver,Techniques, Immunolabeling
D009136 Muscular Dystrophies A heterogeneous group of inherited MYOPATHIES, characterized by wasting and weakness of the SKELETAL MUSCLE. They are categorized by the sites of MUSCLE WEAKNESS; AGE OF ONSET; and INHERITANCE PATTERNS. Muscular Dystrophy,Myodystrophica,Myodystrophy,Dystrophies, Muscular,Dystrophy, Muscular,Myodystrophicas,Myodystrophies
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D016189 Dystrophin A muscle protein localized in surface membranes which is the product of the Duchenne/Becker muscular dystrophy gene. Individuals with Duchenne muscular dystrophy usually lack dystrophin completely while those with Becker muscular dystrophy have dystrophin of an altered size. It shares features with other cytoskeletal proteins such as SPECTRIN and alpha-actinin but the precise function of dystrophin is not clear. One possible role might be to preserve the integrity and alignment of the plasma membrane to the myofibrils during muscle contraction and relaxation. MW 400 kDa.
D018485 Muscle Fibers, Skeletal Large, multinucleate single cells, either cylindrical or prismatic in shape, that form the basic unit of SKELETAL MUSCLE. They consist of MYOFIBRILS enclosed within and attached to the SARCOLEMMA. They are derived from the fusion of skeletal myoblasts (MYOBLASTS, SKELETAL) into a syncytium, followed by differentiation. Myocytes, Skeletal,Myotubes,Skeletal Myocytes,Skeletal Muscle Fibers,Fiber, Skeletal Muscle,Fibers, Skeletal Muscle,Muscle Fiber, Skeletal,Myocyte, Skeletal,Myotube,Skeletal Muscle Fiber,Skeletal Myocyte

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