Exposure to air pollution was demonstrated to be correlated with the neurodegenerative disease showing the cognitive deficits, but the impacts on motor function has yet to be investigated. The motor behavioral test and diffusion magnetic resonance imaging (MRI) tractography analysis were applied to the traffic-related particulate matter (PM)-exposed models in this study. We found the decline in motor function and the destruction of the microstructure after exposed to traffic-related PM for 3 months, in which the structural alterations of motor control circuit were similar to the characteristic of the Parkinson's disease (PD).
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