Molecular Pathology: Immunohistochemistry for Inherited Myopathies
Laboratory / Diagnostics
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Overview
From WUSTL NeuromuscularCytoplasmic proteins Extracellular proteins Nuclear proteins Sarcolemmal proteins Extracellular molecules Laminins Laminin γ1-chain: Control for assessment of basement membrane in basal lamina disorders Laminin α2 (Merosin) Normal: Diffusely present on basal lamina & IM nerves Absent Congenital muscular dystrophy Associated with reduced laminin β2, α-dystroglycan & integrin α7 Reduced Primary: Myopathy Secondary: FKRP (LGMD 2I, CMD + muscle hypertrophy, MEB, Walker-Warburg syndrome Laminin-β1: Reduced in Bethlem myopathy Collagen Bethlem myopathy: Collagen VI staining normal; Laminin-β1 reduce
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Data sourced from the Washington University Neuromuscular Disease Center. For clinical use, always refer to primary sources.