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Gastrointestinal absorption and its regulation of hawthorn leaves flavonoids.

Sci Rep

January 2025

School of Pharmacy, Fudan University, 826 Zhangheng Road, Shanghai, 201203, P.R. China.

Hawthorn leave flavonoids (HLF) are widely used as an herb or dietary supplements for cardio-cerebrovascular diseases. However, its gastrointestinal absorption behavior and mechanism have not been disclosed. In this study, gastrointestinal absorption and its regulation of 4''-O-glucosylvitexin (GLV), 2''-O-rhamnosylvitexin (RHV), vitexin (VIT), rutin (RUT) and hyperoside (HP) in HLF were investigated using in vitro, in situ and in vivo models.

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Food-drug interactions (FDIs) are pharmacokinetic or pharmacodynamic changes in drug effects caused by the presence of specific foods. To identify and prevent FDIs, pharmacists, alongside other healthcare professionals, should possess a certain level of knowledge. This study aimed to assess knowledge of FDIs among Croatian pharmacists.

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Investigation of drug-microbial interactions has gained prominence due to the increasing need to study pharmacomicrobiomics. Previous research has revealed the microbiome's role in drug metabolism, influencing efficacy, bioavailability, and toxicity. Several potential interactions have reported between drugs and microbes, including bioaccumulation, biotransformation, and the influence of drugs on microbial growth.

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TBAJ-876, a second-generation diarylquinoline with greater antimycobacterial activity and a potentially better safety profile compared with bedaquiline, is under development for the treatment of drug-susceptible and drug-resistant tuberculosis (TB). A phase 1, first-in-human study of TBAJ-876, comprising a single-ascending dose (SAD) part including a food effect cohort, a multiple-ascending dose (MAD) part, and a relative bioavailability part of tablets versus oral suspension, was conducted on 137 healthy adults. A drug-drug interaction study was conducted on 28 healthy adults to evaluate the effects of TBAJ-876 on a cytochrome P450 3A4 substrate (midazolam) and a P-glycoprotein substrate (digoxin).

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Understanding adefovir pharmacokinetics as a component of a transporter phenotyping cocktail.

Eur J Clin Pharmacol

July 2024

Department I of Pharmacology, Center for Pharmacology, Faculty of Medicine and University Hospital Cologne, University of Cologne, Gleueler Straße 24, Cologne, 50931, Germany.

Article Synopsis
  • Adefovir was studied to understand how it interacts with renal transporters when combined with other drugs, showing a 20% increase in systemic exposure when used together with metformin, sitagliptin, pitavastatin, and digoxin.
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