ArticleNeuropathology and applied neurobiology2023
Myostatin in idiopathic inflammatory myopathies: Serum assessment and disease activity.
Article in Neuropathology and applied neurobiology, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.
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Who cites it
6 citing papers in PubMed, 7 citations in OpenAlex.
- Alterations in systemic and skeletal muscle myostatin regulation are most prominent at disease onset and associate with muscle-related outcomes in idiopathic inflammatory myopathies.Arthritis research & therapy · 2026Article
- Ageing-Associated Dysregulation of Myogenic Differentiation in Inclusion Body Myositis.Journal of cachexia, sarcopenia and muscle · 2026Review
- Vitamin D and its receptor in skeletal muscle are associated with muscle disease manifestation, lipid metabolism and physical fitness of patients with myositis.Arthritis research & therapy · 2025Article
- Impact of Disease Severity and Disease-Modifying Therapies on Myostatin Levels in SMA Patients.International journal of molecular sciences · 2024Article
- The Role of Exercise to Improve Physiological, Physical and Psychological Health Outcome in Idiopathic Inflammatory Myopathies (IIM).Journal of inflammation research · 2024Review
- Myostatin in idiopathic inflammatory myopathies: Serum assessment and disease activity.Neuropathology and applied neurobiology · 2023Article
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Authors and funding
14 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
aimsIn idiopathic inflammatory myopathies (IIM), disease activity is difficult to assess, and IIM may induce severe muscle damage, especially in immune-mediated necrotising myopathies (IMNM) and inclusion body myositis (IBM). We hypothesise that myostatin, a negative regulator of muscle mass, could be a new biomarker of disease activity and/or muscle damage.
methodsProspective assessment of myostatin protein level in 447 IIM serum samples (dermatomyositis [DM], n = 157; IBM, n = 72; IMNM, n = 125; and antisynthetase syndrome [ASyS], n = 93) and 59 healthy donors (HD) was performed by ELISA. A gene transcript analysis was also carried out on 18 IIM muscle biopsies and six controls to analyse myostatin and myostatin pathway-related gene expression.
resultsIIM patients had lower myostatin circulating protein levels and gene expression compared to HD (2379 [1490; 3678] pg/ml vs 4281 [3169; 5787] pg/ml; p < 0.0001 and log2FC = -1.83; p = 0.0005, respectively). Myostatin-related gene expression varied accordingly. Based on the Physician Global Assessment, inactive IIM patients showed higher myostatin levels than active ones. This was the case for all IIM subgroups, except IMNM where low myostatin levels were maintained (2186 [1235; 3815] vs 2349 [1518; 3922] pg/ml; p = 0.4).
conclusionsMyostatin protein and RNA levels are decreased in all IIM patients, and protein levels correlate with disease activity. Inactive ASyS and DM patients have higher myostatin levels than active patients. Myostatin could be a marker of disease activity in these subgroups. However, IMNM patients do not have significant increase in myostatin levels after disease remission. This may highlight a new pathological disease mechanism in IMNM patients.
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