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10:31
Antigenic Liposomes for Generation of Disease-specific Antibodies
Published on: October 25, 2018
[Antibodies in myasthenia gravis]
1Centre de référence de pathologie neuromusculaire Paris-Est, service de neurologie Mazarin, institut de myologie, Hôpital de Pitié-Salpêtrière, 47 Boulevard de l'Hôpital, 75651 Paris, France. anne-marie.maronne@psl.aphp.fr
Revue Neurologique
|January 24, 2009
Summary
In myasthenia gravis, anti-acetylcholine receptor antibodies (anti-AChR abs) are common but don't correlate with disease severity. Maternal anti-AChR abs can cause neonatal myasthenia, with risk increasing at higher titers.
Area of Science:
- Neurology
- Immunology
- Autoimmune Diseases
Context:
- Myasthenia gravis (MG) is an autoimmune disorder affecting neuromuscular transmission.
- The primary target in most MG cases is the acetylcholine receptor (AChR).
- Antibodies against AChR (anti-AChR abs) are key diagnostic markers.
Purpose:
- To elucidate the role and correlation of anti-AChR antibodies with myasthenia gravis severity and neonatal outcomes.
- To investigate alternative antibody targets like MuSK in AChR-negative MG.
- To understand the mechanisms of AChR loss induced by antibodies.
Summary:
- 75-80% of myasthenia gravis patients have anti-AChR abs, which cause AChR loss via blocking, modulation, or complement lysis.
- Neither anti-AChR ab levels nor repertoire correlate with disease severity; however, titers correlate with induced AChR loss in vitro.
- Maternal anti-AChR abs can cause transient neonatal myasthenia, with risk elevated at titers >= 100 nM. MuSK antibodies are found in ~40% of generalized MG without anti-AChR abs.
Impact:
- Provides insights into the complex relationship between antibody levels and clinical presentation in myasthenia gravis.
- Highlights the diagnostic and prognostic significance of anti-AChR and anti-MuSK antibodies.
- Informs understanding of neonatal myasthenia and potential risk factors.
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