生物利用度
化学
尿
代谢物
药代动力学
口服
肝肠循环
新陈代谢
粪便
吸收(声学)
葡萄糖醛酸
排泄
药理学
间隙
内分泌学
内科学
生物
生物化学
医学
微生物学
物理
泌尿科
声学
作者
Hitoshi Ohno,Yasunari Kojima,Hiroshi Harada,Yoshikazu Abe,Takuro Endo,Mamoru Kobayashi
出处
期刊:Xenobiotica
[Informa]
日期:2018-03-28
卷期号:49 (4): 463-473
被引量:8
标识
DOI:10.1080/00498254.2018.1449269
摘要
The pharmacokinetic and metabolite profiles of mizagliflozin, a novel selective sodium glucose co-transporter 1 inhibitor designed to act only in the intestine, were investigated in rats.Mizagliflozin administrated intravenously (0.3 mg/kg) and orally (3 mg/kg) declined with a short half-life (0.23 and 1.14 h, respectively). The absolute bioavailability was only 0.02%. Following intravenous administration of [14 C]mizagliflozin (0.3 mg/kg), radioactivity in plasma was also rapidly declined. Up to 24 h after oral administration of [14 C]mizagliflozin (1 mg/kg), radioactivity was recovered in the faeces (98.4%) and in the urine (0.8%). No remarkable accumulation of radioactivity in tissues was observed using tissue dissection technique and whole body autoradiography.Orally dosed [14 C]mizagliflozin was mostly metabolised to its aglycone, KP232, in the intestine. In the plasma, KP232 and its glucuronide were predominant. KP232 glucuronide was also prominent in the bile and was recovered as KP232 in the faeces possibly because of the deconjugation by gut microflora. Mizagliflozin was observed neither in the urine nor the faeces.These findings suggest that orally administered mizagliflozin is poorly absorbed, contributing to low systemic exposure; if absorbed, mizagliflozin is rapidly cleared from circulation.
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