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A monoclonal antibody raised against Alzheimer cortex that specifically recognizes a subpopulation of microglial cells

P Cras, J Gheuens, U Lubke, J Boons, M Vandermeeren, H Van Heuverswijn and JJ Martin

Laboratory of Neuropathology, Born Bunge Foundation, University of Antwerp, Wilrijk, Belgium.

A monoclonal antibody (MAb), termed AMC30, was raised after in vitro immunization with sonicated neurofibrillary tangle (NFT)-enriched fractions prepared from Alzheimer's brain. The antigen to which AMC30 is directed was expressed by microglial cells in senile plaques of Alzheimer's disease (AD). Microglia in the parenchyma surrounding brain tumors or infarctions, multinuclear giant cells, perivascular and parenchymal macrophages throughout the brain of AIDS patients were also labeled. Different non-nervous system lesions in which macrophages participate were also stained. Microglial cells in normal areas of the cortex or white matter were not labeled with MAb AMC30. The antigen to which AMC30 is directed was not detected in normal bone marrow, lymph nodes, lung, or spleen monocytes or macrophages. The epitope recognized by MAb AMC30 was present after formalin fixation and paraffin embedding. Our findings suggest that this MAb is directed against an antigen that is specifically expressed in a subpopulation of microglial cells and macrophages reactive to various pathological conditions.

Volume 38, Issue 8, pp. 1201-1207, 08/01/1990
Copyright © 1990 by The Histochemical Society


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