DRUG FOR INHIBITING VASCULAR INTIMAL HYPERPLASIA

摘要

A drug for inhibiting vascular intimal hyperplasia which is effective in the prevention of restenosis after percutaneous transluminal coronary angioplasty (PTCA) and stent placement in a blood vessel or effective in treatments for the progress thereof. The drug for inhibiting vascular intimal hyperplasia contains either a 3(2H)-pyridazinone compound represented by the formula (I): (wherein R<1>, R<2>, and R<3> each independently represents hydrogen or C1-6 alkyl; X represents halogeno, cyano, or hydrogen; Y represents halogeno, trifluoromethyl, or hydrogen; and A represents optionally hydroxylated C1-8 alkylene) or a pharmacologically acceptable salt thereof.