Antibodies Flashcards
Heterophile Antibodies
EBV (Infectious Mono)
Anti-Alveolar Basement Membrane Antibodies
Goodpasture Sx
Anti-Centromere Antibodies
Limited Scleroderma (CREST Sx)
Anti-Cyclic Citrullinated Peptide Antibody
RA
Anti-Cardiolipin Antibodies (ACAs)
Def’n, Seen In (2)?
Type of APLA (anti-phospholipid antibody).
↑risk of blood clots and/or pregnancy loss.
SEEN IN:
- Antiphospholipid Sx
- SLE
Anti-DNA Topoisomerase I (Anti-Scl 70)
Seen In?
SEEN IN:
- Diffuse Scleroderma
Anti-Desmoglein Antibodies (IgG antibodies)
Seen In, Appearance on Immunofluorescence (IF)?
SEEN IN: Pemphigus Vulgaris
IF:
- Ab around epidermal cells in “netlike” / reticular pattern
(Desmoglein = component of desmosomes.
Desmosomes connect keratinocytes in stratum spinosum.)
Anti-DNase B Antibodies
Def’n,↑Levels In (2)?
Antibodies to DNase B (a substance produced by Group A Strep).
↑IN:
- Acute Post-Strep Glomerulonephritis
- Rheumatic Fever
Anti-Glomerular Basement Membrane Antibodies
Goodpasture Sx: necrotizing glomerulonephritis with linear IgG deposition on glomerular basement membrane.
Anti-dsDNA Autoantibodies
Seen In?
SEEN IN:
- SLE ( -> Renal Disease )
Anti-Glutamate Decarboxylase Autoantibodies
Seen In?
SEEN IN:
- Type I DM
Anti-Gliadin / Anti-Transglutaminase / Anti-Endomysial IgA Autoantibodies
Seen In?
SEEN IN:
- Celiac Disease
Anti-Histone Antibodies
Seen In?
SEEN IN:
- Drug-Induced SLE
Anti-Hemidesmosome Antibodies (IgG antibodies)
Seen In, Appearance on IF?
SEEN IN:
- Bullous Pemphigoid
(Hemidesmosomes in epidermal basement memb = below epidermis)
IF:
- Linear pattern at epidermal-dermal junction
Anti-Jo1 Autoantibodies
Seen In?
SEEN IN:
- Dermato- + Polymyositis
Antimicrosomal Antithyroglobulin Autoantibodies
Def’n, Seen In?
Sign of Thyroid damage.
SEEN IN:
- Hashimoto’s Thyroiditis
Anti-Mitochondrial Antibodies (AMA)
Primary Biliary Cirrhosis
Anti-Nuclear Autoantibodies (ANA): Anti-SSA / SSB
(ie Anti-Ro / -La)
Seen In (3)?
SEEN IN:
- Sjorgen’s Sx
- SLE
- Libman-Sacks Endocarditis
Anti-Neutrophil Cytoplasmic Antibodies (ANCA)
Def’n, Seen In?
Autoantibodies (primarily IgG) against antigens in the cytoplasm of Neutrophils.
SEEN IN:
- Vasculites
C-ANCA (Cytoplasmic ANCA / PR3-ANCA)
Def’n, Seen In (2)?
ANCA with CYTOPLASMIC + diffusely GRANULAR staining pattern.
SEEN IN:
- RPGN
- Wegener Granulomatosis (Granulomatosis w polyangitis)
P-ANCA (Perinuclear ANCA / MPO-ANCA)
Def’n, Seen In (4)?
ANCA with PERINUCLEAR staining pattern.
SEEN IN:
- RPGN
- Churg-Strauss Sx
- Microscopic Polyangitis
- Polyarteritis Nodosa
Anti-Platelet Antibodies
IgG against platelet antigens Gp 2b/3a
Idiopathic Thrombocytopenic Purpura
Anti-Mi2 Autoantibodies
Seen In?
SEEN IN:
- Dermato- + Polymyositis
Anti-Smith Autoantibodies
Def’n, Seen In?
Antibodies against Smith antigen: part of snRNAs + snRNPs
SEEN IN:
- SLE
Anti-Smooth Muscle Autoantibodies
Seen In?
SEEN IN:
- Autoimmune Hepatitis
Anti-SRP Autoantibodies
Seen In?
SEEN IN:
- Dermato- + Polymyositis
Antithyroglobulin Autoantibodies
Seen In?
SEEN IN:
- Hashimoto Thyroiditis
Anti-Topoisomerase Antibodies (ie Anti-Scl70)
Diffuse Systemic Scleroderma
Anti-U1 RNP Autoantibodies
Seen In?
SEEN IN:
- Mixed Connective Tis Dz
Rheumatoid Factor
Def’n, Mech (4 steps), Seen In (2)?
Anti-IgG antibody (IgM against IgG).
MECH:
Attacks IgG in synovial tis -> Infl ->
Destruction of articular cartilage ->
Joint Fibrosis + potential Ankylosis (if joint isn’t moved).
SEEN IN:
- Rheumatoid Arthritis
- Rheumatic Fever
Autoantibodies against Ca Channels
Lambert-Eaton Myasthenic Sx
Autoantibodies against Insulin
Seen In?
SEEN IN:
- Type 1 DM (often)
- May be seen years before clinical dz presents *
Autoantibodies to Ribonucleoprotein Antigens:
SS-A (Ro), SS-B (La)
Seen In?
SEEN IN:
- Sjogren’s Sx
Autoantibodies against Ach Receptor
Seen In?
SEEN IN:
- Myasthenia Gravis
Autoantibodies against TSH receptor
Seen In?
SEEN IN: Graves Dz
Monoclonal Antibody Spike
Seen In (4)?
SEEN IN:
- Monoclonal Gammopathy of Undetermined Significance
- Multiple Myeloma (IgG or IgA)
- Primary Amyloidosis
- Waldenstrom Macroglobulinemia (IgM)