A sensitive and selective HPLC-MS3 method for therapeutic drug monitoring of meropenem and its validation by comparison with HPLC-MS2 methods

Overview of therapeutic drug monitoring and clinical practice

With the rapid development of clinical pharmacy in China, therapeutic drug monitoring (TDM) has become an essential tool for guiding rational clinical drug use and is widely concerned. TDM is a tool that combines pharmacokinetic and pharmacodynamic knowledge to optimize personalized drug therapy, which can improve treatment outcomes, reduce drug-drug toxicity, and avoid the risk of developing drug resistance. To effectively implement TDM, accurate and sophisticated analytical methods are required. By researching the literature published in recent years, we summarize the types of commonly monitored drugs, therapeutic windows, and clinical assays and track the trends and hot spots of therapeutic drug monitoring. The purpose is to provide guidelines for clinical blood drug concentration monitoring, to implement individualized drug delivery programs better, to ensure the rational use of drugs for patients, and to provide a reference for the group to carry out related topics in the future.

Sensitive and Selective Bioscreening of the Most Commonly Used Coronavirus Disease Drug, Favipiravir, and Its Co-Administered therapeutic, Meropenem, in Human Plasma

Favipiravir and Meropenem have been concurrently used as directly acting antiviral and antibiotic agents for the treatment of coronavirus disease in human plasma. Accurate and specific reversed phase ultra-performance liquid chromatographic and high performance thin layer chromatographic methods were developed and validated for the first time analysis of this combination in spiked human plasma using Cefepime as an internal standard. In the developed UHPLC method, separation was performed on an BEH^® C18 column with a mixture of acetonitrile and 0.05 M potassium dihydrogen orthophosphate (pH = 3) in a ratio of 10: 90 (v/v) as an eluate. Scanning of the separated peaks was at 298 nm. The developed method showed high sensitivity, and the drugs showed linearity in the range of (5-70 μg/mL) for Favipiravir and (2-50 μg/mL) for. The proposed high performance thin layer chromatographic method included the separation using a mixture of ethyl acetate: methanol: deionized water: formic acid (5: 4: 1.5: 0.3, by volume), then spots detection at 300 nm. Methods were investigated for greenness using the eco-scale and national environmental method index tools and were validated according to food and drug administration guidelines. Methods can be applied for bio-analysis and therapeutic drug monitoring studies. This article is protected by copyright. All rights reserved.