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Published on: November 8, 2017
Abdominal aortic aneurysm as an autoimmune disease
1Department of Cardiovascular Surgery, Kobari General Hospital, Noda City, Chiba, Japan. genex@nifty.com
Annals of the New York Academy of Sciences
|January 25, 2002
Summary
The development of abdominal aortic aneurysms (AAAs) may involve autoimmune processes. Research suggests immune responses to a specific aortic wall protein could be a key factor in AAA pathogenesis.
Area of Science:
- Immunology
- Cardiovascular Research
- Genetics
Background:
- The exact causes of abdominal aortic aneurysms (AAAs) remain unclear.
- Emerging evidence suggests a potential role for autoimmune mechanisms in AAA development.
Purpose of the Study:
- To investigate the hypothesis that autoimmune disease processes are key to AAA pathogenesis.
- To explore the involvement of cellular and humoral immunity in AAA development.
Main Methods:
- Examined the role of HLA typing and potential viral triggers in AAA etiology.
- Investigated molecular mimicry as a potential mechanism.
- Identified autoantigen location within the aortic wall's microfibrillar compartment.
- Assessed patient immunoreactivity to this novel structural protein.
Main Results:
- Both cellular and humoral immunity appear implicated in AAA pathogenesis.
- Specific HLA types are closely associated with AAAs.
- A potential role for viral infections via molecular mimicry is suggested.
- Patients with AAA exhibit immunoreactivity to a normal structural protein in the aortic wall.
Conclusions:
- Autoimmune responses targeting a specific aortic wall protein are hypothesized to be central to AAA pathogenesis.
- Further elucidation of the autoantigen could lead to diagnostic serum testing for AAA.
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