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Studying furosemide solubilization using an in vitro model simulating gastrointestinal digestion and drug solubilization in neonates and young infants.
European Journal of Pharmaceutical Sciences 2017 November 16
OBJECTIVE: The aim of the present study was to study the oral performance of furosemide in neonates and young infants using a newly developed in vitro model simulating digestion and drug solubilization in the gastrointestinal (GI) tract of the human neonate and young infant population (age 0-2months).
METHODS: The utilized in vitro model was designed to mimic the digestion and drug solubilization processes occurring in the stomach, and the small intestine of the neonate and young infant population, using physiologically relevant media, volumes and digestive enzymes. Overall the experimental model setup was based on the dynamic in vitro lipolysis model previously described by Fernandez et al. (2009). The amount of furosemide solubilized in the aqueous phase during a digestion study was used as an estimate for the amount of drug available for absorption in vivo. By varying different factors in the model setup, e.g. presence of food (food-effect), effect of digestion (tested with and without addition of digestive enzymes), and properties of the dosage form, it was possible to estimate the importance of these factors in vivo.
KEY FINDINGS AND CONCLUSIONS: The present in vitro data suggest that the oral performance of furosemide in neonates and young infants will be increased by the presence of food (frequent feedings) due to increased drug solubilization, however, not influenced by the GI digestion of this food. The properties of the dosage form (immediate release tablets) did not affect the drug solubilization as compared to administration of the pure drug powder.
METHODS: The utilized in vitro model was designed to mimic the digestion and drug solubilization processes occurring in the stomach, and the small intestine of the neonate and young infant population, using physiologically relevant media, volumes and digestive enzymes. Overall the experimental model setup was based on the dynamic in vitro lipolysis model previously described by Fernandez et al. (2009). The amount of furosemide solubilized in the aqueous phase during a digestion study was used as an estimate for the amount of drug available for absorption in vivo. By varying different factors in the model setup, e.g. presence of food (food-effect), effect of digestion (tested with and without addition of digestive enzymes), and properties of the dosage form, it was possible to estimate the importance of these factors in vivo.
KEY FINDINGS AND CONCLUSIONS: The present in vitro data suggest that the oral performance of furosemide in neonates and young infants will be increased by the presence of food (frequent feedings) due to increased drug solubilization, however, not influenced by the GI digestion of this food. The properties of the dosage form (immediate release tablets) did not affect the drug solubilization as compared to administration of the pure drug powder.
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