Autoimune Flashcards
Four ANA patterns are
Speckled
Homogenous
Nucleolar
Peripheral (rim)
Speckled ANA seen in
Sjogren's SLE RA dermato/poly PBC scleroderma
ANA with nucleolar pattern
Scleroderma
Hashimotos
Target: thyroglobulin, thyroid peroxidase
Graves
Target tsh receptor
Goodpasture syndrome
Target type 4 collagen
Addison
Target cytochrome P450 antigens
Peripheral (rim) pattern
dsDNA seen in SLE and drug induced lupus
ANA homogenous pattern seen in
Target is DNA histone complexes
SLE
drug induced lupus
RA
RA associated with which haplotype
HLA DR4
Acquired C1 inhibitor deficiency
Age 30 or more
Clinically similar to hereditary angioedema
recurrent angioedema without pruritis or urticaria
70 percent associated NHL or MGUS or other lymphoproliferative disorder or cancer
Most have autoAb against C1 inhibitor protein but precise path not defined
Check NO family hx
Test C4 C1q and C1 inhibitor level . Then low C1 inhibitor function obtained to clinch dx
Don’t use ACEI as bradykinin is the mediator
Autoimmune hepatitis type 2
Anti-liver/kidney microsomal-1 (anti-LKM-1) antibodies
Anti-liver cytosol-1 (anti-LC1) antibodies
Anti-SLA/LP
PBC
AMA
Autoimmune hepatitis type 1
Antinuclear antibodies (ANA)
Anti-smooth muscle antibodies (ASMA)
Anti-actin antibodies (AAA)
Anti-soluble liver/liver pancreas antigen (anti-SLA/LP)- most specific
Atypical perinuclear antineutrophil cytoplasmic antibodies (pANCA)
Antimitochondrial antibodies (AMA)