10501
This review will give an update demonstration on the novel anti - AD natural products and their derivatives / analogues , which have been divided into five subgroups according to their different action mechanisms : AChEIs , antioxidants , neuroprotective agents , monoamine oxidase ( MAO ) inhibitors , and tau hyperphosphorylation inhibitors .
 Chemical: monoamine
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: monoamine