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. 2013 Apr;80(4):463-5.
doi: 10.1016/j.mehy.2012.12.041. Epub 2013 Feb 8.

A novel mechanism of NALP3 inducing ischemia reperfusion injury by activating MAPK pathway in acute renal failure

J L Hao  1 , Y F Li, R S Li
Affiliations

A novel mechanism of NALP3 inducing ischemia reperfusion injury by activating MAPK pathway in acute renal failure

J L Hao et al. Med Hypotheses. 2013 Apr.

Abstract

Acute renal failure (ARF) is a rapid loss of kidney function. The reasons and mechanism by which this occurs has not been clarified so far thus creating obstacles to management of this disease. Presently, the experimental research using the accepted renal ischemia reperfusion injury (I/R injury) model represented for ARF focuses on several possible relevant factors such as reactive oxygen species, no-reflow phenomenon, apoptosis and extensive inflammatory response. The latter is much talked about currently. Some intracellular danger sensing proteins, such as the nucleotide binding domain leucine rich repeats-containing family proteins known as NLRs, adjust the inflammatory response through the formation of a multi-protein complex known as an inflammasome. The most classic family member of this complex is NALP3 confirmed to serve as a contributor to I/R injury. However, how it contributes to the pathology remains obscure. The extensive inflammatory response is considered to be modulated by the mitogen-activated protein kinases (MAPK) signaling pathway. NOD2, another family member of NLR, which shares similar structure with NALP3, indicated that it induced the activation of MAPK in response to a pathogen, thus we assumed that NALP3 performed the harmful process of I/R injury, resulting probably from the activation of the MAPK signaling pathway. If this hypothesis proves to be correct, it might benefit the management of ARF.

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