Investigating the Critical Variables of Azithromycin Oral Absorption Using In Vitro Tests and PBPK Modeling
Autor: | Maria Vertzoni, Pascal Somville, Mariana Guimarães, Nikoletta Fotaki |
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Rok vydání: | 2021 |
Předmět: |
Adult
Absorption (pharmacology) Drug Physiologically based pharmacokinetic modelling medicine.drug_class media_common.quotation_subject Antibiotics Physiologically Based Pharmacokinetic (PBPK) modeling Administration Oral Pharmaceutical Science Azithromycin In Vitro Techniques Pharmacology Models Biological Permeability Biopharmaceutics Absorption Therapeutic index Humans Medicine Computer Simulation Child media_common Pediatric business.industry Biopharmaceutics Classification System In vitro Intestinal Absorption Solubility Biopharmaceutics classification system (BCS) business medicine.drug |
Zdroj: | Guimaraes Sa Correia, M, Somville, P, Vertzoni, M & Fotaki, N 2021, ' Investigating the critical variables of azithromycin oral absorption using in vitro tests and PBPK Modeling ', Journal of Pharmaceutical Sciences, vol. 110, no. 12, pp. 3874-3888 . https://doi.org/10.1016/j.xphs.2021.09.013 |
ISSN: | 0022-3549 |
Popis: | Azithromycin is an antibiotic listed in the essential list of medicines for adults and pediatrics. Conflicting evidence has been found regarding azithromycin classification according to the Biopharmaceutics classification system (BCS). The purpose of this study was to identify the critical variables that influence the oral absorption of azithromycin in adults and pediatrics.Azithromycin solubility and dissolution studies (oral suspension) were performed in buffers and biorelevant media simulating the fasted and fed gastrointestinal tract. A PBPK model was developed for azithromycin for healthy adult volunteers and pediatrics (Simcyp® v18.2) informed by in vitro solubility and dissolution studies to predict drug performance after administration of azithromycin as an oral suspension.The developed PBPK model predicted azithromycin plasma concentrations-time profiles after administration of an oral suspension to adults and pediatrics. Sensitivity analysis of solubility vs dose suggests that absorption is independent of solubility within the therapeutic dose range in both adults and pediatrics. The developed PBPK model for adults and pediatrics was consistent with the mechanism of permeation through the intestinal membrane (passive and active processes) being the rate-limiting step of azithromycin's absorption.The physiologically based approach proposed was shown to be useful to determine the factors controlling drug absorption in adults and pediatrics. |
Databáze: | OpenAIRE |
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