8 results
Myositis Specific Antibodies (MSAs)

Dermatomyositis: MDA5, TIF1y, NXP2, Mi-2, SAE
Anti-Synthetase Syndrome: Jo-1, PL7, PL12, EJ, OJ
Immune Mediated
Antibodies (MSAs ... , TIF1y, NXP2, Mi ... #Specific #Antibodies ... clinical #diagnosis #rheumatology ... #table
Autoantibodies in Rheumatology
 • Lupus (SLE): ANA (anti-nuclear antibody), dsDNA (double-stranded DNA), Anti-Smith, Anti-Ro (SSA) and
Autoantibodies in ... others (RNP, aPL antibodies ... Peptide (CCP) • Myositis ... , Others: SRP, Mi ... #associations #table
Inflammatory Myopathies
Dermatomyositis
 • Onset: Subacute
 • Pattern: Proximal
 • CK: Up to 50X ULN
 • Autoantibodies:
Anti-MDA5, anti-Mi ... Necrotizing Autoimmune Myositis ... Inclusion Body Myositis ... diagnosis #comparison #rheumatology ... #table
Autoantibodies and their Disease Associations
ANA - Non-specific; common in SLE, autoimmune hepatitis
Anti-CCP, Rheumatoid factor - RA
Anti-dsDNA
Autoantibodies and ... Goodpasture's syndrome #Autoantibodies ... diseases #diagnosis #table ... #rheumatology # ... antibodies
Systemic Lupus Erythematosus - Diagnosis
Manifestations:
 - Arthritis 69%
 - Malar rash 40%
 - Fever 36%
 -
anemia 4% - Myositis ... SLE-Related Auto-Antibodies ... Erythematosus #Diagnosis #autoantibodies ... #differential #rheumatology
Antinuclear antibodies and Systemic lupus
Anti-dsDNA	60-80%	Association with disease activity (when with Farr assay) and lupus nephritis. Can
Antinuclear antibodies ... #Antinuclear #autoantibodies ... erythematosus #diagnosis #rheumatology ... #table #ANA
SLE (Systemic Lupus Erythematosus)

Suspect:
Clinical evidence of (fatigue, rash, photosensitivity, inflammatory arthritis, weight loss, and fever) and
• Anti-Ro/SSA autoantibodies ... Non-autoimmune rheumatologic ... • Transverse Myelitis ... 1, SCL-70, RNP antibodies ... anticardiolipin antibodies
Autoimmune Myositis - Differential Diagnosis Framework

Inflammatory Myopathies: Commonly symmetric proximal muscle weakness, no substantial muscle pain
Autoimmune Myositis ... RP-ILD), dermato-rheumatologic ... INCLUSION BODY MYOSITIS ... Mechanic's hands Autoantibodies ... #Myopathy #rheumatology