Volume 92, Issue 2
  • ISSN: 0002-9637
  • E-ISSN: 1476-1645



is the causative agent of Chagas' disease, a chronic illness affecting 10 million people around the world. The complement system plays an important role in fighting microbial infections. The recognition molecules of the lectin pathway of complement activation, mannose-binding lectin (MBL), ficolins, and CL-11, bind to specific carbohydrates on pathogens, triggering complement activation through MBL-associated serine protease-2 (MASP-2). Previous work showed that human MBL and ficolins contribute to lysis. However, MBL-deficient mice are only moderately compromised in their defense against the parasite, as they may still activate the lectin pathway through ficolins and CL-11. Here, we assessed MASP-2-deficient mice, the only presently available mouse line with total lectin pathway deficiency, for a phenotype in infection. Total absence of lectin pathway functional activity did not confer higher susceptibility to infection, suggesting that it plays a minor role in the immune response against this parasite.


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  • Received : 15 Apr 2014
  • Accepted : 01 Nov 2014
  • Published online : 04 Feb 2015

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