Abstract
Declines in mitochondrial functions are associated with aging. The combination of 5‐aminolevulinic acid (5‐ALA) and sodium ferrous citrate (SFC) improves mitochondrial functions in cultured cells. In this study, we investigated the effects of dietary supplementation with 5‐ALA and SFC (5‐ALA/SFC) on the healthspan and life span of Drosophila melanogaster. Adult Drosophila fruit flies were fed cornmeal food containing various concentrations of 5‐ALA/SFC. Locomotor functions, life span, muscle architecture, and age‐associated changes in mitochondrial function were analyzed. We found that feeding 5‐ALA/SFC mitigated age‐associated declines in locomotor functions and extended organismal life span. Moreover, 5‐ALA/SFC preserved muscle architecture and maintained the mitochondrial membrane potential in aged animals. Since 5‐ALA phosphate/SFC is used as a human dietary supplement, our results suggest that it could be used to slow the age‐related declines in muscle functions, prevent age‐associated clinical conditions such as frailty, and extend healthspan and life span.
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