Allograft-inflammatory factor-1 in rat experimental autoimmune encephalomyelitis, neuritis, and uveitis: expression by activated macrophages and microglial cells.

Abstract:

:Allograft inflammatory factor-1 (AIF-1) is a Ca2+ binding peptide expressed predominantly by activated monocytes. In order to investigate the role of AIF-1 in autoimmune lesions of the rat nervous system, we have used a synthetic gene to express AIF-1 in E. coli and have produced monoclonal antibodies against AIF-1. AIF-1 was localized to monocytes/macrophages with rather selective staining of a minor rat monocyte subpopulation of lymphoid tissue. We then investigated expression of AIF-1 in experimental autoimmune encephalomyelitis (EAE), neuritis (EAN), and uveitis (EAU). Within the local inflammatory lesions, infiltrating macrophages are prominently stained. In the diseased brain, AIF-1-positive microglial cells are not only found in the direct vicinity of the infiltrate, but widespread activation is seen in the parenchyma. This is the first demonstration that AIF-1 is present in autoimmune lesions. Immunostaining of microglial cells is noteworthy, as these cells are strategically placed regulatory elements of CNS immunosurveillance. Thus, AIF-1 might be a valuable marker to dissect the local monocyte heterogeneity in autoimmune disease.

journal_name

Glia

journal_title

Glia

authors

Schluesener HJ,Seid K,Kretzschmar J,Meyermann R

doi

10.1002/(sici)1098-1136(199810)24:2<244::aid-glia9

subject

Has Abstract

pub_date

1998-10-01 00:00:00

pages

244-51

issue

2

eissn

0894-1491

issn

1098-1136

pii

10.1002/(SICI)1098-1136(199810)24:2<244::AID-GLIA9

journal_volume

24

pub_type

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