Abstract
Autoinflammatory diseases (AIDs) refer to a broad range of genetically mediated conditions characterized by recurrent attacks of systemic inflammation with typical manifestations of fever, rash, serositis, lymphadenopathy, and musculoskeletal symptoms. The discovery of genetic basis for these conditions have led to the understanding of novel intracellular receptors for infectious and noninfectious danger signals in innate immunity. Innate immunity has a key role in the development of AIDs, in contrast with autoimmune disease, which arise from problems in adaptive immunity. Advances in understanding the molecular mechanisms of intracellular inflammatory cascades have led to renewed interest in its role in the pathogenesis of more common non-genetic autoinflammatory rheumatic conditions, such as Behcet's disease, gouty arthritis, Adult onset Still's diseases, and systemic onset juvenile arthritis. The characterization of cryopyrin (inflammasome) and its significant role in the activation of proinflammatory cytokines, such as IL-1β and TNF-α in the development of AIDs, has provided rational targets of anti-cy-tokine biologic treatment for some of these conditions.
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Table 1.
Secreted | Transmembrane | Cytosolic |
---|---|---|
Collectin | Toll-like receptor (TLR) | RIG-I-like receptor (RIR) |
Ficolin | C-type lectin | NLR* |
Pentraxin | Absent in melanoma 2 (AIM2) | |
Interferon-inducible protein 16 (IFI16) |
Table 2.
FMF: Familial Mediterranean fever, MKD: Mevalonate kinase deficiency, TRAPS: TNF receptor-associated periodic syndrome, AD: autosomal dominant, AR: autosomal recessive, FCAS: familial cold autoinflammatory syndrome, MWS: Muckle-Wells syndrome, CINCA: chronic infantile neurological cutaneous and articular syndrome, PAPA: pyogenic sterile arthritis, pyoderma gangrenosum and acne syndrome.
Table 3.
Disease | Drugs | Evidence | |
---|---|---|---|
periodic/recurrent fever | FMF | Colchicine | +++ |
Anti-IL-1 | ++ | ||
Anti-TNF | + | ||
MKD | Systemic steroids | ++ | |
Anti-IL-1 | + | ||
Anti-TNF | + | ||
TRAPS | Systemic steroids | ++ | |
Etanercept | ++ | ||
Infliximab | - | ||
Anakinra | + | ||
Cryopyrinopathies | FCAS, MWS | Anti-IL-1 (anakinra, rilonacept, canakinumab) | ++ |
CINCA | |||
Granulomatous disorders | Blau's syndrome | Systemic steroids | + |
Cyclosporin A | + | ||
Methotrexate | + | ||
Anti-IL-1/anti-TNF | + | ||
Pyogenic disorders | PAPA syndrome | Systemic steroids | ++ |
Anti-IL-1 | + | ||
Anti-TNF | + | ||
DIRA | Anakinra | +++ | |
Systemic rheumatic diseases | Behcet disease | Colchicine | +++ |
Cyclosporin A | ++ | ||
Anti-TNF | + | ||
AOSD* | Systemic steroids | +++ | |
Anakinra | ++ | ||
JIA† | Anti-TNF | ++ | |
Anti-IL-1 | + | ||
Gout | Colchicine | +++ | |
Anti-IL-1 | ++ | ||
SAPHO‡ | Anti-TNF | ++ | |
Anakinra | + |