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Related Concept Videos

Lipid-Lowering Drugs: Statins and Miscellaneous Agents01:20

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The clinical conditions affecting the skeletal muscle tissue are broadly categorized as musculoskeletal and neuromuscular disorders.
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Related Experiment Video

Updated: Mar 31, 2026

Detection of Anti-MDA5 Autoantibodies Using HeLa Cells and Immunocytochemistry with Light Microscopy
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Detection of Anti-MDA5 Autoantibodies Using HeLa Cells and Immunocytochemistry with Light Microscopy

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Immune-mediated statin myopathy.

Priyadarshini Loganathan1, Chester V Oddis1, Rohit Aggarwal1

  • 1a Division of Rheumatology and Clinical Immunology, Department of Medicine , University of Pittsburgh , Pittsburgh , PA , USA.

Expert Review of Clinical Immunology
|October 31, 2015
PubMed
Summary
This summary is machine-generated.

Statin-induced necrotizing autoimmune myopathy (SINAM) presents as severe muscle weakness linked to statin use. Early diagnosis and treatment involving statin cessation and immunotherapy are crucial for managing this autoimmune condition.

Keywords:
anti HMGCR antibodyautoimmunehydroxy-methyl-glutaryl-Co-A reductasenecrotizing myopathystatin

Related Experiment Videos

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Detection of Anti-MDA5 Autoantibodies Using HeLa Cells and Immunocytochemistry with Light Microscopy
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Area of Science:

  • Immunology
  • Neurology
  • Genetics

Background:

  • Statin-induced necrotizing autoimmune myopathy (SINAM) is a severe autoimmune condition.
  • It is characterized by proximal muscle weakness and elevated creatine kinase (CK) levels.
  • The anti-3-hydroxy-3-methylglutaryl-coenzyme A reductase (HMGCR) autoantibody is a key biomarker.

Purpose of the Study:

  • To elucidate the clinical phenotype and diagnostic features of SINAM.
  • To understand the association between genetic predisposition and antibody positivity.
  • To highlight the importance of early diagnosis and treatment strategies.

Main Methods:

  • Clinical case analysis and patient data review.
  • Electromyography (EMG) and muscle biopsy for diagnostic confirmation.
  • Detection of anti-HMGCR autoantibodies using ELISA.
  • HLA typing to identify genetic associations.

Main Results:

  • SINAM patients exhibit severe proximal muscle weakness during or after statin exposure.
  • Necrotizing myopathy confirmed by EMG and biopsy.
  • High frequency of anti-HMGCR autoantibody positivity.
  • Strong association between HLA-DRB1*1101 and anti-HMGCR autoantibody positivity.

Conclusions:

  • Statin use can trigger autoimmune myopathy in genetically susceptible individuals.
  • Accurate diagnostic tools like ELISA for anti-HMGCR antibodies are improving understanding of SINAM.
  • Management involves statin discontinuation and immunomodulatory therapies.