Mitoquinone is a mitochondria-targeted antioxidant designed to accumulate within mitochondria in vivo in order to protect against oxidative damage. Mitoquinone (MitoQ) is a mitochondria-targeted antioxidant.The optimal doses for Mitoquinone (MitoQ) and DecylTPP treatment are selected from dose-response experiments during 4-h cold storage (CS). The potential protective benefits of Mitoquinone treatment against CS injury are tested initially using MitoSOX Red, a mitochondrial-targeted fluorescent dye that measures mitochondrial superoxide generation. Normal rat kidney (NRK) cells exposed to CS result in a ~2-fold increase in fluorescence due to mitochondrial superoxide compared with untreated cells. Mitoquinone offers significant protection against CS-induced mitochondrial superoxide generation; whereas the control compound DecylTPP does not offer any protection. Mitoquinone treatment markedly decreases mitochondrial superoxide generation, whereas kidneys treated with DecylTPP have comparable levels of mitochondrial superoxide to kidneys exposed to CS alone.

C₃₇H₄₄O₄P

DMSO