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To determine whether dysregulation of SIRT1 promotes NADPH oxidase - dependent production of reactive oxygen species ( ROS ) and impairs endothelial function we assessed the effects of three structurally different inhibitors of SIRT1 ( nicotinamide , sirtinol , EX527 ) in aorta segments isolated from young Wistar rats .
 Chemical: NADPH; Chemical: oxygen; Chemical: nicotinamide; Chemical: sirtinol; Chemical: EX527
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: NADPH; Chemical: oxygen; Chemical: nicotinamide; Chemical: sirtinol; Chemical: EX527