Document Detail


Induction of proinflammatory cytokines and nitric oxide by Trypanosoma cruzi in renal cells.
MedLine Citation:
PMID:  21327989     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
Chagas disease is typically associated with cardiac involvement. During the acute phase of murine infection with Trypanosoma cruzi, severe acute myocarditis can develop. Prior to cardiac alteration, however, infected mice present with renal inflammatory infiltration causing acute kidney injury due to an ischemia/reperfusion lesion. Thus, the present study was undertaken in order to evaluate whether the parasites or some of their components would directly affect renal cells. As such, this study employed kidney cell lines (mesangial, epithelial, and proximal tubular) that mimic different regions of the renal system. Mesangial cells are more resistant to infection, showing reduced parasite internalization relative to epithelial and proximal tubular cells. Upon infection, mesangial cells produced more nitric oxide, tumor factor necrosis-α, and interferon-γ and showed decreased viability when compared to the other cell lines. These results indicate that the resistance of mesangial cells to infection may be related to the increased expression of nitric oxide and proinflammatory cytokines. Conversely, the high levels of nitric oxide produced by these cells caused impairment of cell integrity and viability. Higher nitric oxide concentrations promote cellular injury and can be involved in the genesis of ischemia/reperfusion lesions in acute kidney injury.
Authors:
Gabriel M de Oliveira; Nobuko Yoshida; Elisa M S Higa; Sérgio Shenkman; Monique Alves; Daniela Staquicini; Cynthia Cascabulho; Nestor Schor
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2011-2-17
Journal Detail:
Title:  Parasitology research     Volume:  -     ISSN:  1432-1955     ISO Abbreviation:  -     Publication Date:  2011 Feb 
Date Detail:
Created Date:  2011-2-17     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8703571     Medline TA:  Parasitol Res     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Affiliation:
Laboratório de Biologia Celular, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Av. Brasil 4365, Manguinhos, 21045-900, Rio de Janeiro, RJ, Brazil, gmoliveira@ioc.fiocruz.br.
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