Final answer:
The enzyme targeted in the treatment of pheochromocytoma is called catecholamine-O-methyltransferase (COMT), which is inhibited by metyrosine.
Step-by-step explanation:
The enzyme targeted in the treatment of pheochromocytoma is called catecholamine-O-methyltransferase (COMT). It is responsible for the breakdown of catecholamines, such as dopamine, norepinephrine, and epinephrine. By inhibiting this enzyme, more catecholamines are available, helping to reduce the symptoms of pheochromocytoma.
The drug used to target COMT in the treatment of pheochromocytoma is called metyrosine. Metyrosine works by irreversibly inhibiting COMT, reducing the production of catecholamines and helping to alleviate the symptoms of pheochromocytoma.