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Peroxynitrite-mediated mitochondrial dysfunction.

J Boczkowski¹, C L Lisdero, S Lanone

¹Institut National de la Santé et de la Recherche Médicale U408 and IFR 02, Faculté X. Bichat, Paris, France. jbb2@bichat.inserm.fr

Biological Signals and Receptors

|February 27, 2001

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Peroxynitrite, a reactive oxygen species, damages mitochondrial proteins, leading to cell injury. Understanding this oxidant

Area of Science:

Biochemistry
Cell Biology
Pathophysiology

Background:

Peroxynitrite anion (ONOO(-)) is a potent biological oxidant.
It is formed from superoxide and nitric oxide.
Peroxynitrite is implicated in free radical-induced tissue injury.

Purpose of the Study:

To discuss the effects of peroxynitrite on mitochondrial proteins.
To explore the link between peroxynitrite, mitochondrial dysfunction, and cellular injury.

Main Methods:

Review of experimental evidence on peroxynitrite's effects.
Analysis of structural and functional alterations in mitochondrial proteins.

Main Results:

Exogenous and endogenous peroxynitrite alters mitochondrial protein structure and function.

Related Experiment Videos

This leads to mitochondrial dysfunction.

Cellular and organ injury results from peroxynitrite-induced mitochondrial damage.

Conclusions:

Peroxynitrite is a key mediator of mitochondrial dysfunction and tissue injury.
Its physiopathological implications are significant in various disease states.