1974 年 94 巻 5 号 p. 553-558
The metabolic fate of 14C-KW-110 in rats has been studied. After oral administration of 500 mg/kg of 14C-KW-110 to rats, the radioactivity excreted was 73.3% in expiratory CO2, 16.4% in feces, and 8.2% in urine, whereas aluminum it KW-110 was excreted in feces only. After the oral administration of KW-110 to rats, the radioactivity was distributed in all tissues in rats and especially high i0n stomach, intestinal tracts, liver, and kidney, but aluminum in KW-110 administered was distributed only in digestive tracts, and retained in stomach for about 5-7 hr after its oral administration and gradually moved into intestinal tracts. N-Acetylglutamine, glutamine, -and urea were identified as urinary radioactive metabolites after the oral administration of KW-110 and they accounted for 46.5%, 24.7%, and 27.4%, respectively, of total radioactivity excreted in 48-hr urine. The radioactive substances detected in serum were also N-acetylglutamine, glutamine, and glutamic acid.