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Related Experiment Video

Updated: Jun 19, 2026

An Immunohistopathologic Study to Profile the Folate Receptor Beta Macrophage and Vascular Immune Microenvironment in Giant Cell Arteritis

Published on: February 8, 2019

Vasculitis in association with australia antigen.

D J Gocke¹, K Hsu, C Morgan

¹Department of Medicine, College of Physicians and Surgeons of Columbia University, New York 10032.

The Journal of Experimental Medicine

|October 30, 2009

Summary

Polyarteritis nodosa patients with Australia antigenemia showed circulating immune complexes. These complexes, containing Australia antigen and immunoglobulin, were found in blood vessel walls, indicating a potential role in disease pathogenesis.

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Area of Science:

Immunology
Hepatology
Rheumatology

Background:

Polyarteritis nodosa (PN) is a systemic vasculitis.
Chronic Australia antigen (Hepatitis B surface antigen) positivity is associated with certain autoimmune conditions.

Purpose of the Study:

To investigate the role of Australia antigen in polyarteritis nodosa.
To identify immune complexes in patients with PN and chronic Australia antigenemia.

Main Methods:

Biopsy-proven diagnosis of polyarteritis nodosa.
Detection of circulating immune complexes.
Immunofluorescent studies of blood vessel walls.

Main Results:

Evidence of circulating immune complexes containing Australia antigen and immunoglobulin in PN patients.
Localization of Australia antigen, IgM, and complement in the blood vessel walls of two patients.

Conclusions:

Circulating immune complexes involving Australia antigen may contribute to the pathogenesis of polyarteritis nodosa.
Immune complex deposition in blood vessels is a key feature in these patients.