STUDIES ON THE TOXICITY OF SUDOXICAM / 中国药理学通报

ABSTRACT

The acute iv and ig LD50 of sudoxicam synthesized by Shanyan Ph-armaceutic College was calculated to be 135?10. 7 and 320 ? 96 mg/kg in mice. In polyarthritic rats, Sud at 2 and 4 mg/kg/d for 28 days did not induce changes in serum AKP, SGPT, BUN the morphal-ogic characteristics of the gastrointestinal tract, liver and kidney. In 3 dogs orally given Sud 16 mg/kg/d for 5 consecutive days, 2/3 died at days 10 to 13. In other 3 dogs given Sud 16 mg/kg/d every other day, plasma concentrations of Sud were determined by ultra violet spectrophotometry. It was found that on the days 10 to 20 , the concentration time curves had attained a intoxicant steady state with plasma sudoxicam concentrations as high as 44. 9 ? 73. 9?g/ml ,and all of them died after 17~25 days. Their bleeding time and coagu- lation time were prolonged to 2 or 3 times of the control and serum BUN was increased. In one dog autopsy revealed the interstitial inflammation of the kidney and small local necrosis of the live, but not in other dogs.Gastric ulceration in rats can be produced by the oral administration of verious doses of Sud. The UD50 of Sud was 15.47mg/kg. It was found that the gastric ulceration in rats is related to the plasma levels