ArticleDrug design, development and therapy2022
Metabolism and Mass Balance in Rats Following Oral Administration of the Novel Antifibrotic Drug Fluorofenidone.
Article in Drug design, development and therapy, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Objective: Fluorofenidone (AKF-PD) is a novel antifibrotic small-molecule compound. The purpose of this study was to investigate the metabolic and excretory pathways of AKF-PD in rats. Methods: High-performance liquid chromatography with mass spectrometric (HPLC-MS) detection was used to analyze the metabolites in rat urine. The metabolites were separated by chromatography and their structure was confirmed. HPLC was used to determine the contents of the parent compound and its metabolites in feces and urine after quantitative administration to study the excretion pathway. Results: AKF-PD was mainly oxidized to the carboxyl group after methyl hydroxylation. After oral administration, the total amount of the prototype drug and its hydroxylated metabolites and carboxylated metabolites excreted from the urine and feces of rats was 87%. However, most of them are excreted in urine and feces in the form of carboxylated metabolites, and rarely excreted in the form of prototype drugs and hydroxylated metabolites. Which is that the urinary discharge of hydroxylated metabolites, fluorine ketones, and carboxylated metabolites were 0.2%, 1.1%, and 75.2%, respectively, while the fecal discharge were 0.2%, 0.3%, and 10.1%, respectively. Conclusion: AKF-PD is mainly oxidized into 2-hydroxymethyl and 5-carboxyl AKF-PD through the Phase I metabolic reaction in rats. AKF-PD is a highly permeable compound classified by biopharmaceutics and is mainly excreted from the urine in the form of metabolites.
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