Journal
MUSCLE & NERVE
Volume 58, Issue 3, Pages 456-459Publisher
WILEY
DOI: 10.1002/mus.26140
Keywords
CARS; histopathology; muscle myopathy; Raman imaging; skeletal muscle
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Funding
- Protein Research Unit Ruhr within Europe, Ministry of Innovation, Science and Research of North-Rhine Westphalia, Germany
- Heimer-Foundation, Bielefeld
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Introduction: The aim of this study was the label-free identification of distinct myopathological features with coherent anti-Stokes Raman scattering (CARS) imaging, which leaves the sample intact for further analysis. Methods: The protein distribution was determined without labels by CARS at 2,930cm(-1) and was compared with the results of standard histological staining. Results: CARS imaging allowed the visualization of glycogen accumulation in glycogen storage disease type 5 (McArdle disease) and of internal nuclei in centronuclear myopathy. CARS identified an inhomogeneous protein distribution within muscle fibers in sporadic inclusion body myositis that was not shown with standard staining. In Duchenne muscular dystrophy, evidence for a higher protein content at the border of hypercontracted fibers was detected. Discussion: CARS enables the label-free identification of distinct myopathological features, possibly paving the way for subsequent proteomic, metabolic, and genomic analyses. Muscle Nerve58: 457-460, 2018
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