PARK7 and multiple system atrophy: However, we did not observe antioxidant effects of NaPB treatment in aged transgenic MSA mice, as measured by DJ-1 levels in SNc with the dosing regimen applied here (different from the one in the study by Zhou et al. [16]), suggesting that factors other than DJ-1-mediated cell stress responses are pivotal for the neuroprotection reported in the current experiment.