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Immunol Rev. 2001 Apr;180:5-15.

The role of complement in inflammation and adaptive immunity.

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1
The Center for Blood Research, Harvard Medical School, Boston, Massachusetts 02115, USA.

Abstract

Major advances in our understanding of the immunobiology of complement were made within the past 5 years primarily due to the development of gene-targeting technology. New strains of mice bearing specific deficiencies in serum complement proteins or their receptors were developed using this approach. Characterization of these mice has provided new and exciting insights into the biology of the complement system. In this review, we discuss recent results on two important aspects of the complement system, i) host protection and inflammation, and ii) regulation of B lymphocytes of adaptive immunity. While these two roles appear distinct, they are linked. We discuss how natural antibody and classical pathway complement work together in host protection against bacterial infection on the one hand but, on the other, they co-operate to induce inflammation as observed in reperfusion injury. Significantly, the lymphocytes that produce natural antibody, the B-1 lymphocytes, are regulated in part by the complement system.

[Indexed for MEDLINE]

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