摘要
Dear Editor. Parkinson＇s disease （PD） is the second most prevalent neurodegenerative disorder affecting about 1% of the worldwide population over the age of 60 （EI-Agnaf, 2003; Majbour, Vaikath et al, 2016）. Motor symptoms, which is currently the major trait for PD diagnosis, appear when 50%-60% of dopaminergic neurons in the substantia nigra （SN） and 70%-80% of dopaminergic terminals in the striatum are lost （Kim, Paik et al., 2014; Landeck, Hall et al.,
Dear Editor. Parkinson＇s disease （PD） is the second most prevalent neurodegenerative disorder affecting about 1% of the worldwide population over the age of 60 （EI-Agnaf, 2003; Majbour, Vaikath et al, 2016）. Motor symptoms, which is currently the major trait for PD diagnosis, appear when 50%-60% of dopaminergic neurons in the substantia nigra （SN） and 70%-80% of dopaminergic terminals in the striatum are lost （Kim, Paik et al., 2014; Landeck, Hall et al.,
