生物转化
去甲基化
甲基化
体内
化学
代谢物
药代动力学
新陈代谢
排泄
生物化学
吸收(声学)
立体化学
药理学
生物
DNA甲基化
酶
基因
物理
声学
生物技术
基因表达
作者
Xiaoqi Wang,Dongli Li,Yong Cao,Chi‐Tang Ho,Qingrong Huang
标识
DOI:10.1021/acs.jafc.1c07509
摘要
5-Demethylated polymethoxyflavones (5-OH PMFs) are the most unique monodemethylated PMFs with relatively low polarities and are proved to possess better anticancer and anti-inflammatory effects than their respective permethoxylated ones. However, their detailed in vivo metabolic fates have not been fully studied. 5-Demethylsinensetin (5-OH Sin), being one of the 5-demethylated citrus PMFs, was used in the present research to investigate its biotransformation in pharmacokinetics and excretion in rats. The results showed that 5-OH Sin was mostly accumulated in the large intestine, indicating its poor absorption in the small intestine. In addition, 5,3'-didemethylsinensetin and 5,4'-didemethylsinensetin were identified as two dominated metabolites of 5-OH Sin, and the C-3' position of 5-OH Sin was more facile to be demethylated in systemic circulation. Moreover, other than demethylation reactions, the methylation transformation of 5-OH Sin and its metabolites were also observed and quantified, suggesting that the bidirectional biotransformation between 5-OH Sin and its parent compound, Sin, occurred under in vivo conditions.
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