NOD2 receptor is crucial for protecting against the digestive form of Chagas disease.

Abstract:

:Digestive and cardiodigestive forms of Chagas' disease are observed in 2% to 27% of the patients, depending on their geographic location, Trypanosoma cruzi strain and immunopathological responses. The aim of this work was to evaluate the role of NOD2 innate immune receptor in the pathogenesis of the digestive system in Chagas' disease. Patients with digestive form of the disease showed lower mRNA expression of NOD2, higher expression of RIP2 and α-defensin 6, compared to indeterminate form, detected by Real-time PCR in peripheral blood mononuclear cells. In addition, there was a negative correlation between the expression of NOD2 and the degree of dilation of the esophagus, sigmoid and rectum in those patients. The infection of NOD2-/- mice with T. cruzi strain isolated from the digestive patient induced a decrease in intestinal motility. Histopathological analysis of the colon and jejunum of NOD2-/- and wild type C57BL/6 animals revealed discrete inflammatory foci during the acute phase of infection. Interestingly, during the chronic phase of the infection there was inflammation and hypertrophy of the longitudinal and circular muscular layer more pronounced in the colon and jejunum from NOD2-/- animals, when compared to wild type C57BL/6 mice. Together, our results suggest that NOD2 plays a protective role against the development of digestive form of Chagas' disease.

journal_name

PLoS Negl Trop Dis

authors

Pereira NS,Queiroga TBD,da Silva DD,Nascimento MSL,Andrade CM,Souto JT,Ricci MF,Arantes RME,Zamboni DS,Chiari E,Câmara ACJD,Galvão LMDC,Guedes PMM

doi

10.1371/journal.pntd.0008667

subject

Has Abstract

pub_date

2020-09-28 00:00:00

pages

e0008667

issue

9

eissn

1935-2727

issn

1935-2735

pii

PNTD-D-20-00421

journal_volume

14

pub_type

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