Which medication is used to treat prolactin-secreting pituitary adenomas?

Which medication is used to treat prolactin-secreting pituitary adenomas?

• A. Bromocriptine
• B. Amantadine
• C. Methylphenidate
• D. Dextroamphetamine

Answer: (A)

Dopamine keeps prolactin production in check, so using a drug that mimics dopamine on the pituitary lactotrophs can lower prolactin levels and often shrink a prolactin-secreting tumor. Bromocriptine is a dopamine D2 receptor agonist that binds to these receptors on the tumor cells, directly inhibiting prolactin synthesis and release and frequently reducing tumor size over time. That makes it the standard medical therapy for prolactinomas, helping both the hormonal symptoms and the tumor itself. Other drugs listed aren’t effective for this purpose: they don’t provide the specific D2-driven suppression of prolactin from the pituitary tumor and are used for different conditions.

Dopamine keeps prolactin production in check, so using a drug that mimics dopamine on the pituitary lactotrophs can lower prolactin levels and often shrink a prolactin-secreting tumor. Bromocriptine is a dopamine D2 receptor agonist that binds to these receptors on the tumor cells, directly inhibiting prolactin synthesis and release and frequently reducing tumor size over time. That makes it the standard medical therapy for prolactinomas, helping both the hormonal symptoms and the tumor itself. Other drugs listed aren’t effective for this purpose: they don’t provide the specific D2-driven suppression of prolactin from the pituitary tumor and are used for different conditions.