22512
Puerarin administration enhanced glutathione ( GSH ) activity , glial cell line - derived neurotrophic factor ( GDNF ) expression and PI3K / Akt pathway activation , which might ameliorate MPTP injection - induced progressive elevation of reactive oxygen species ( ROS ) formation in mice .
 Chemical: Puerarin; Chemical: glutathione; Chemical: GSH; Chemical: MPTP; Chemical: oxygen
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: glutathione; Chemical: GSH; Chemical: MPTP; Chemical: oxygen