Depletion of immature B cells during Trypanosoma cruzi infection: involvement of myeloid cells and cyclooxygenase pathway

ZÚÑIGA EI,; ACOSTA RODRIGUEZ EVA; MERINO MC; MONTES CL; GRUPPI A

Wiley

Año: 2005 p. 1849 - 1849

table id="HB_Mail_Container" height="100%" cellspacing="0" cellpadding="0" width="100%" border="0" unselectable="on"> The ability of a microorganism to elicit or evade B cell responses represents a determinant factor for the final outcome of an infection. Although pathogens may subvert humoral responses at different stages of B cell development, most studies addressing the impact of an infection on the B cell compartment have focused on mature B cells within peripheral lymphoid organs. Herein, we report that a protozoan infection, i.e. a Trypanosoma cruzi infection, induces a marked loss of immature B cells in the BM, which also compromises recently emigrated B cells in the periphery. The depletion of BM immature B cells is associated with an increased rate of apoptosis mediated by a parasite-indirect mechanism in a Fas/FasL-ind