18297
Dysregulation of KYNA activity is thought to be involved in neurodegenerative diseases , the physiopathology of which evokes excitotoxicity , oxidative stress and / or protein aggregation .
 Chemical: KYNA
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: KYNA