This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Endocrinology, Subject name: Biochemistry
[{'content': 'Low levels of dopamine produced by the hypothalamus is a pathologic condition associated with which of the blood hormone levels. \nSelect and explain. \nA. High prolactin (PRL), B. High TSH, C. High cortisol, D. Low growth hormone (GH)', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Tyrosine, produced by the hydroxylation of the essential amino acid phenylalanine, is further hydroxylated to form dihydroxyphenylalanine (dopa), which is subsequently decarboxylated to form dopamine.Dopamine is an inhibitor of prolactin production and secretion. Thus, if dopamine is low, more prolactin will be produced and secreted by the anterior pituitary.', 'role': 'assistant'}]