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There is no evidence that mitochondria are the main source of reactive oxygen species in mammalian cells.
MedLine Citation:
PMID:  21303703     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
It is often assumed that mitochondria are the main source of reactive oxygen species (ROS) in mammalian cells, but there is no convincing experimental evidence for this in the literature. What evidence there is suggests mitochondria are a significant source for ROS, which may have physiological and pathological effects. But quantitatively, endoplasmic reticulum and peroxisomes have a greater capacity to produce ROS than mitochondria, at least in liver. In most cells and physiological or pathological conditions there is a lack of evidence for or against mitochondria being the main source of cellular ROS. Mitochondria can rapidly degrade ROS and thus are potential sinks for ROS, but whether mitochondria act as net sources or sinks within cells in particular conditions is unknown.
Authors:
Guy C Brown; Vilmante Borutaite
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2011-2-5
Journal Detail:
Title:  Mitochondrion     Volume:  -     ISSN:  1872-8278     ISO Abbreviation:  -     Publication Date:  2011 Feb 
Date Detail:
Created Date:  2011-2-9     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  100968751     Medline TA:  Mitochondrion     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
Copyright © 2010. Published by Elsevier B.V.
Affiliation:
Department of Biochemistry, University of Cambridge, Tennis Court Road, Cambridge CB2 1QW, UK.
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