Volume 87, Issue 1
  • ISSN: 0002-9637
  • E-ISSN: 1476-1645



The glycosylphosphatidylinositol (GPI)-anchored mucins of trypomastigotes play an important immunomodulatory role during the course of Chagas disease. Here, some biological activities of tGPI-mucins from four isolates, including benznidazole-susceptible (BZS-Y), benznidazole-resistant (BZR-Y), CL, and Colombiana, were evaluated. GPI-mucins were able to differentially trigger the production of interleukin-12 and nitric oxide in BALB/c macrophages and modulate LLC-MK2 cell invasion. The significance of these variations was assessed after analysis of the terminal α-galactosyl residues. Enzymatic treatment with α-galactosidase indicated a differential expression of -linked α-galactosyl residues among the strains, with higher expression of this sugar in BZS-Y and BZR-Y populations followed by Colombiana and CL. Unweighted pair group method analysis of the carbohydrate anchor profile and biological parameters allowed the clustering of two groups. One group includes Y and CL strains ( II and VI), and the other group is represented by Colombiana strain ( I).


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  • Received : 06 Jan 2012
  • Accepted : 07 Apr 2012

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