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Taken together , our data demonstrate that puerarin attenuates MPTP - induced dopaminergic neuronal degeneration via modulating GDNF expression , PI3K / Akt pathway and GSH activation , which subsequently ameliorate MPTP - induced ROS formation and decrease of Lamp 2A expression .
 Chemical: puerarin; Chemical: MPTP; Chemical: GSH; Chemical: MPTP
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 Chemical: puerarin; Chemical: MPTP; Chemical: GSH; Chemical: MPTP