This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General pathology, Subject name: Pathology
[{'content': 'Isoprostanes are formed from archidonic acid by - \nSelect and explain. \nA. Cycloxygenase, B. Lipoxygenase, C. Epoxide hydrolase, D. Non-enzymatic free radical peroxidation', 'role': 'user'}, {'content': 'Answer: D \nExplanation: isoprostanes are prostaglandin stereoisomers Cycloxygenase pathway Thrombaxne and prostaglandin are formed Lipoxyenase pathway leukotienes are formed these are formed by Non-enzymatic free radical peroxidation of AA these have potent vasoconstrictor activity and modulate WBC and platelet adhesion ref robbins 9th ed page 84', 'role': 'assistant'}]