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Immunoregulatory networks in human C hagas disease

Chagas disease, caused by the infection with T rypanosoma cruzi , is endemic in all L atin A merica. Due to the increase in population migration, C hagas disease has spread worldwide and is now considered a health issue not only in endemic countries. While most chronically infected individuals remai...

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Published in:Parasite immunology 2014-08, Vol.36 (8), p.377-387
Main Authors: Dutra, W. O., Menezes, C. A. S., Magalhães, L. M. D., Gollob, K. J.
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Language:English
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description Chagas disease, caused by the infection with T rypanosoma cruzi , is endemic in all L atin A merica. Due to the increase in population migration, C hagas disease has spread worldwide and is now considered a health issue not only in endemic countries. While most chronically infected individuals remain asymptomatic, approximately 30% of the patients develop a potentially deadly cardiomyopathy. The exact mechanisms that underlie the establishment and maintenance of the cardiac pathology are not clear. However, there is consistent evidence that immunoregulatory cytokines are critical for orchestrating the immune response and thus influence disease development or control. While the asymptomatic (indeterminate) form represents a state of balance between the host and the parasite, the establishment of the cardiac form represents the loss of this balance. Analysis of data obtained from several studies has led to the hypothesis that the indeterminate form is associated with an anti‐inflammatory cytokine profile, represented by high expression of IL ‐10, while cardiac form is associated with a high production of IFN ‐gamma and TNF ‐alpha in relation to IL ‐10, leading to an inflammatory profile. Here, we discuss the immunoregulatory events that might influence disease outcome, as well as the mechanisms that influence the establishment of these complex immunoregulatory networks.
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title Immunoregulatory networks in human C hagas disease
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