- The panicogenic effects of cholecystokinin-tetrapeptide are antagonized by L-365,260, a central cholecystokinin receptor antagonist, in patients with panic disorder. Bradwejn, J., Koszycki, D., Couëtoux du Tertre, A., van Megen, H., den Boer, J., Westenberg, H. Arch. Gen. Psychiatry (1994)