Comparative Assessment of In Vitro and In Silico Methods for Aerodynamic Characterization of Powders for Inhalation

In vitro assessment of dry powders for inhalation (DPIs) aerodynamic performance is an inevitable test in DPI development. However, contemporary trends in drug development also implicate the use of in silico methods, e.g., computational fluid dynamics (CFD) coupled with discrete phase modeling (DPM)...

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Autores principales:	Jelisaveta Ignjatović, Tijana Šušteršič, Aleksandar Bodić, Sandra Cvijić, Jelena Đuriš, Alessandra Rossi, Vladimir Dobričić, Svetlana Ibrić, Nenad Filipović
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	dry powders for inhalation (DPIs) computational fluid dynamics (CFD) discrete phase modeling (DPM) aerodynamic performance solid lipid microparticles Pharmacy and materia medica RS1-441
Acceso en línea:	https://doaj.org/article/f218b2725cfa4f589e551c84839a40ca
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spelling	oai:doaj.org-article:f218b2725cfa4f589e551c84839a40ca2021-11-25T18:41:00ZComparative Assessment of In Vitro and In Silico Methods for Aerodynamic Characterization of Powders for Inhalation10.3390/pharmaceutics131118311999-4923https://doaj.org/article/f218b2725cfa4f589e551c84839a40ca2021-11-01T00:00:00Zhttps://www.mdpi.com/1999-4923/13/11/1831https://doaj.org/toc/1999-4923In vitro assessment of dry powders for inhalation (DPIs) aerodynamic performance is an inevitable test in DPI development. However, contemporary trends in drug development also implicate the use of in silico methods, e.g., computational fluid dynamics (CFD) coupled with discrete phase modeling (DPM). The aim of this study was to compare the designed CFD-DPM outcomes with the results of three in vitro methods for aerodynamic assessment of solid lipid microparticle DPIs. The model was able to simulate particle-to-wall sticking and estimate fractions of particles that stick or bounce off the inhaler’s wall; however, we observed notable differences between the in silico and in vitro results. The predicted emitted fractions (EFs) were comparable to the in vitro determined EFs, whereas the predicted fine particle fractions (FPFs) were generally lower than the corresponding in vitro values. In addition, CFD-DPM predicted higher mass median aerodynamic diameter (MMAD) in comparison to the in vitro values. The outcomes of different in vitro methods also diverged, implying that these methods are not interchangeable. Overall, our results support the utility of CFD-DPM in the DPI development, but highlight the need for additional improvements in these models to capture all the key processes influencing aerodynamic performance of specific DPIs.Jelisaveta IgnjatovićTijana ŠušteršičAleksandar BodićSandra CvijićJelena ĐurišAlessandra RossiVladimir DobričićSvetlana IbrićNenad FilipovićMDPI AGarticledry powders for inhalation (DPIs)computational fluid dynamics (CFD)discrete phase modeling (DPM)aerodynamic performancesolid lipid microparticlesPharmacy and materia medicaRS1-441ENPharmaceutics, Vol 13, Iss 1831, p 1831 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	dry powders for inhalation (DPIs) computational fluid dynamics (CFD) discrete phase modeling (DPM) aerodynamic performance solid lipid microparticles Pharmacy and materia medica RS1-441
spellingShingle	dry powders for inhalation (DPIs) computational fluid dynamics (CFD) discrete phase modeling (DPM) aerodynamic performance solid lipid microparticles Pharmacy and materia medica RS1-441 Jelisaveta Ignjatović Tijana Šušteršič Aleksandar Bodić Sandra Cvijić Jelena Đuriš Alessandra Rossi Vladimir Dobričić Svetlana Ibrić Nenad Filipović Comparative Assessment of In Vitro and In Silico Methods for Aerodynamic Characterization of Powders for Inhalation
description	In vitro assessment of dry powders for inhalation (DPIs) aerodynamic performance is an inevitable test in DPI development. However, contemporary trends in drug development also implicate the use of in silico methods, e.g., computational fluid dynamics (CFD) coupled with discrete phase modeling (DPM). The aim of this study was to compare the designed CFD-DPM outcomes with the results of three in vitro methods for aerodynamic assessment of solid lipid microparticle DPIs. The model was able to simulate particle-to-wall sticking and estimate fractions of particles that stick or bounce off the inhaler’s wall; however, we observed notable differences between the in silico and in vitro results. The predicted emitted fractions (EFs) were comparable to the in vitro determined EFs, whereas the predicted fine particle fractions (FPFs) were generally lower than the corresponding in vitro values. In addition, CFD-DPM predicted higher mass median aerodynamic diameter (MMAD) in comparison to the in vitro values. The outcomes of different in vitro methods also diverged, implying that these methods are not interchangeable. Overall, our results support the utility of CFD-DPM in the DPI development, but highlight the need for additional improvements in these models to capture all the key processes influencing aerodynamic performance of specific DPIs.
format	article
author	Jelisaveta Ignjatović Tijana Šušteršič Aleksandar Bodić Sandra Cvijić Jelena Đuriš Alessandra Rossi Vladimir Dobričić Svetlana Ibrić Nenad Filipović
author_facet	Jelisaveta Ignjatović Tijana Šušteršič Aleksandar Bodić Sandra Cvijić Jelena Đuriš Alessandra Rossi Vladimir Dobričić Svetlana Ibrić Nenad Filipović
author_sort	Jelisaveta Ignjatović
title	Comparative Assessment of In Vitro and In Silico Methods for Aerodynamic Characterization of Powders for Inhalation
title_short	Comparative Assessment of In Vitro and In Silico Methods for Aerodynamic Characterization of Powders for Inhalation
title_full	Comparative Assessment of In Vitro and In Silico Methods for Aerodynamic Characterization of Powders for Inhalation
title_fullStr	Comparative Assessment of In Vitro and In Silico Methods for Aerodynamic Characterization of Powders for Inhalation
title_full_unstemmed	Comparative Assessment of In Vitro and In Silico Methods for Aerodynamic Characterization of Powders for Inhalation
title_sort	comparative assessment of in vitro and in silico methods for aerodynamic characterization of powders for inhalation
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/f218b2725cfa4f589e551c84839a40ca
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Comparative Assessment of In Vitro and In Silico Methods for Aerodynamic Characterization of Powders for Inhalation

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