Hypoxia induces mitochondrial mutagenesis and dysfunction in inflammatory arthritis

Abstract excerpt

OBJECTIVE: To assess the levels and spectrum of mitochondrial DNA (mtDNA) point mutations in synovial tissue from patients with inflammatory arthritis in relation to in vivo hypoxia and oxidative stress levels. METHODS: Random Mutation Capture assay was used to quantitatively evaluate alterations of the synovial mitochondrial genome. In vivo tissue oxygen levels (tPO(2)) were measured at arthroscopy using a Licox...

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