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Pathogenesis of Takayasu's arteritis: a 2011 update
Laurent Arnaud1, Julien Haroche, Alexis Mathian
1Department of Internal Medicine. French Reference Center for Rare Auto-immune diseases. Groupe hospitalier Pitié-Salpêtrière, AP-HP, 47-83 bd. de l'hôpital, Paris, France.
Autoimmunity Reviews
|August 23, 2011
Summary
Takayasu's arteritis pathogenesis involves heat-shock proteins and MICA triggering immune responses. This leads to vascular inflammation and thickening, offering future therapeutic targets.
Area of Science:
- Immunology
- Vascular Biology
- Pathogenesis
Background:
- Takayasu's arteritis (TA) pathogenesis is not fully understood.
- Recent advances highlight the role of immune system activation in TA.
Purpose of the Study:
- To elucidate the pathogenic sequence of Takayasu's arteritis.
- To identify key molecular and cellular players in TA development.
Main Methods:
- Hypothesized pathway involving heat-shock proteins, MICA, and immune cells.
- Analysis of T cell subsets (Th1, Th17), NK cells, and dendritic cells.
- Involvement of cytokines (interferon-γ, VEGF, PDGF) and auto-antibodies.
Main Results:
- Immune cells (γδ T, NK cells) recognize MICA on vascular cells, initiating inflammation.
- Th1 and Th17 cells promote vascular lesions, giant cell formation, and smooth muscle proliferation.
- Potential role of auto-antibodies in endothelial cell damage.
Conclusions:
- TA pathogenesis involves a complex interplay of innate and adaptive immunity.
- Understanding these mechanisms opens avenues for targeted therapies.
- Future drugs may target specific pathways identified in TA pathogenesis.
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