Mitochondrial DNA mutations in RRF of healthy subjects of different age.

Abstract excerpt

To obtain information on the mechanisms responsible of the generation of ragged red fibers (RRF) during aging, we analyzed the mitochondrial genotype of single skeletal muscle fibers of healthy individuals having an age comprised between 45 and 92 years. The sequencing of the D-loop region showed many sequence changes with respect to the Cambridge reference sequence (CRS), in both RRF and normal fibers. These...

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