This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Prostaglandins, Subject name: Pharmacology
Mechanism of action of zileuton: 
Select and explain. 
A. Inhibit prostaglandin synthesis, B. Inhibit COX, C. Inhibit LOX, D. Inhibit mast cells
C: Inhibit LOX
Answer: C: Inhibit LOX 
Explanation: Ans. C. Inhibit LOXArachidonic acid is acted upon by two enzyme-COX and LOX. Lox converts it into leukotrienes and Cox into prostaglandin. Zileuton is the inhibitor of LOX enzyme and it is used in treatment of asthma.