MFF and obstructive sleep apnea syndrome: A decrease in total DRP1 was detected in NSTS-11 cells, whereas NSTS-46 and OSA-13 cells—expressing the highest basal levels of the DRP1 adaptor, mitochondrial fission factor (MFF) (Fig 1C and D)—showed prevalent down-regulation of MFF in response to the tested drugs (Fig 4A–C).