抄録
The effect of acute administration of L-DOPA on TSH and TRH levels in serum was studied in primary or pituitary hypothyroidism. TRH levels in serum fell and then returned to initial levels after L-DOPA administration in primary or pituitary hypothyroidism. TSH levels in serum fell and then returned. to initial levels after L-DOPA administration in primary hypothyroidism. T4 and T3 levels in serum did not change after L-DOPA administration in primary or pituitary hypothyroidism. These data suggested that L-DOPA might act directly to hypothalamus.
