作者
Rosa Maria Elias, Matheus Correa-Costa, Claudiene Rodrigues Barreto, Reinaldo Correia Silva, Caroline Y Hayashida, Angela Castoldi, Giselle Martins Goncalves, Tarcio Teodoro Braga, Renato Barboza, Francisco Jose Rios, Alexandre Castro Keller, Marcos Antonio Cenedeze, Meire Ioshie Hyane, Maria Regina D'Imperio-Lima, Antonio Martins Figueiredo-Neto, Marlene Antonia Reis, Cláudio Romero Farias Marinho, Alvaro Pacheco-Silva, Niels Olsen Saraiva Câmara
发表日期
2012/8/31
卷号
7
期号
8
页码范围
e44004
出版商
Public Library of Science
简介
Malaria associated-acute kidney injury (AKI) is associated with 45% of mortality in adult patients hospitalized with severe form of the disease. However, the causes that lead to a framework of malaria-associated AKI are still poorly characterized. Some clinical studies speculate that oxidative stress products, a characteristic of Plasmodium infection, as well as proinflammatory response induced by the parasite are involved in its pathophysiology. Therefore, we aimed to investigate the development of malaria-associated AKI during infection by P. berghei ANKA, with special attention to the role played by the inflammatory response and the involvement of oxidative stress. For that, we took advantage of an experimental model of severe malaria that showed significant changes in the renal pathophysiology to investigate the role of malaria infection in the renal microvascular permeability and tissue injury. Therefore, BALB/c mice were infected with P. berghei ANKA. To assess renal function, creatinine, blood urea nitrogen, and ratio of proteinuria and creatininuria were evaluated. The products of oxidative stress, as well as cytokine profile were quantified in plasma and renal tissue. The change of renal microvascular permeability, tissue hypoxia and cellular apoptosis were also evaluated. Parasite infection resulted in renal dysfunction. Furthermore, we observed increased expression of adhesion molecule, proinflammatory cytokines and products of oxidative stress, associated with a decrease mRNA expression of HO-1 in kidney tissue of infected mice. The measurement of lipoprotein oxidizability also showed a significant increase in plasma of infected …
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