6260
Whole brain homogenates showed a statistically significant increase in oxidative stress defences such as the total glutathione pool , but without loss of Na ( + ) K ( + ) - ATPase or acetylcholinesterase activities .
 glutathione, Na ( + ) K ( + )
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Chemical 
Text: {0} 
Answer:
 glutathione, Na ( + ) K ( + )