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
Gliajournal_title
Gliaauthors
Schluesener HJ,Seid K,Kretzschmar J,Meyermann Rdoi
10.1002/(sici)1098-1136(199810)24:2<244::aid-glia9subject
Has Abstractpub_date
1998-10-01 00:00:00pages
244-51issue
2eissn
0894-1491issn
1098-1136pii
10.1002/(SICI)1098-1136(199810)24:2<244::AID-GLIA9journal_volume
24pub_type
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