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Lipid storage myopathy.

Wen-Chen Liang1, Ichizo Nishino

  • 1Department of Neuromuscular Research, National Institute of Neuroscience, National Center of Neurology and Psychiatry, 4-1-1 Ogawahigashi-cho, Kodaira, Tokyo, 187-8502, Japan.

Current Neurology and Neuroscience Reports
|November 4, 2010
PubMed
Summary
This summary is machine-generated.

Lipid storage myopathies (LSM) involve lipid buildup in muscles. Genetic testing aids diagnosis, with some types like primary carnitine deficiency and multiple acyl-coenzyme A dehydrogenase deficiency being treatable with supplements or vitamins.

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Area of Science:

  • Biochemistry
  • Genetics
  • Neurology

Background:

  • Lipid storage myopathy (LSM) is defined by excessive lipid accumulation in muscle fibers, stemming from metabolic dysfunction.
  • Currently, only four genetically identifiable LSM subtypes exist: primary carnitine deficiency (PCD), multiple acyl-coenzyme A dehydrogenase deficiency (MADD), neutral lipid storage disease with ichthyosis, and neutral lipid storage disease with myopathy.

Purpose of the Study:

  • To highlight the importance of accurate diagnosis for lipid storage myopathies.
  • To emphasize the treatable nature of specific LSM subtypes, guiding clinical management.

Main Methods:

  • Review of molecular studies and clinical data on lipid storage myopathies.
  • Focus on diagnostic laboratory tests, including genetic analyses.
  • Examination of treatment responses in specific LSM types.

Main Results:

  • Accurate diagnosis through specific laboratory and genetic testing is crucial for LSM management.
  • Primary carnitine deficiency (PCD) patients demonstrate significant improvement with L-carnitine supplementation.
  • Evidence suggests that MADD caused by ETFDH mutations responds well to riboflavin treatment.

Conclusions:

  • Accurate and timely diagnosis of LSM is essential for effective patient management.
  • Specific genetic subtypes of LSM, such as PCD and MADD, are treatable, underscoring the value of diagnostic testing.