Universiteit Leiden

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Research project

24-hour rhythms in drug exposure and effect

Although rarely considered by the pharmaceutical industry or clinicians, 24-hour rhythms in physiology are a factor of potential influence on the pharmacokinetics and pharmacodynamics of drugs.

Contact
Elizabeth (Liesbeth) de Lange
Partners

Project in collaboration with Prof. Dr. Joke Meijer

A thorough understanding of the underlying physiological processes that determine a drug’s exposure and effect is required to address the challenges encountered during the development or optimisation of new and existing drug therapies. Although rarely considered by the pharmaceutical industry or clinicians, 24-hour rhythms in physiology are a factor of potential influence on the pharmacokinetics and pharmacodynamics of drugs.

Although chronopharmacology has existed for decades, we identified several methodological issues in the current body of literature that often precludes implementation of chronopharmacological principles in clinical practice. In general, it was found that a systematic approach to analyse and integrate the data obtained within this field is currently lacking. Therefore, the aim of our research is to develop a more structured approach to study the effect of 24-hour variation on the exposure and effect of drugs. A few drugs were selected to probe 24-hour rhythms.

Midazolam is used to investigate CYP3A mediated metabolism, levofloxacin to study solubility- and permeability-independent absorption and passive renal elimination as well as QT elongation, quinidine to investigate P-glycoprotein mediated transport in the brain, and morphine to investigate P-glycoprotein as well as probenecid-sensitive transporters mediated transport in the brain.

Publications

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