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 Disjournal_title
PLoS neglected tropical diseasesauthors
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 PMMdoi
10.1371/journal.pntd.0008667subject
Has Abstractpub_date
2020-09-28 00:00:00pages
e0008667issue
9eissn
1935-2727issn
1935-2735pii
PNTD-D-20-00421journal_volume
14pub_type
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