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Mitochondrion. 2011 May;11(3):504-12. doi: 10.1016/j.mito.2011.01.009. Epub 2011 Feb 2.

Mitochondrial dysfunction and genetic heterogeneity in chronic periodontitis.

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Centre for Cellular and Molecular Biology (CSIR), Hyderabad, India.


We performed an extensive study on mitochondrial dysfunction in chronic periodontitis (CP). Electron microscopic analysis of gingival cells revealed abnormal mitochondria in 60% of the patients. Mitochondrial membrane potential and oxygen consumption of gingival cells were reduced by 4 fold and 5.8 fold, respectively; whereas ROS production was increased by 18%. The genetic analysis by complete mitochondrial DNA sequencing revealed the identification of 14 novel mutations only in periodontal tissues but not in the blood, suggesting a role of oxidative stress on periodontal tissues. Thus, our functional and genetic analysis provided an evidence for the mitochondrial dysfunction in CP.

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