Journal
KIDNEY INTERNATIONAL
Volume 69, Issue 8, Pages 1403-1409Publisher
ELSEVIER SCIENCE INC
DOI: 10.1038/sj.ki.5000361
Keywords
apoptosis; cytochrome c release; ischemia; reperfusion; mitochondria; peroxynitrite
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In the last decade, various groups have found evidence of nitric oxide production by mitochondrial nitric oxide synthase (mNOS) in a range of experimental models. However, little is known about the role of mNOS in renal ischemia - reperfusion (I/R) injury and its possible involvement in the apoptotic pathway. We analyzed the role of mNOS in apoptosis promotion in rat kidney I/R and its direct implication through experiments in which isolated kidney mitochondria were subjected to hypoxia/reoxygenation. Results showed that neuronal NOS located in the inner mitochondrial membrane is upregulated during renal I/R and that this upregulation, together with the increase in nitric oxide production, is involved in the generation of intramitochondrial peroxynitrite, which in turn leads to cytochrome c release and apoptosis induction in renal I/R.
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