A newly developed high-performance thin layer chromatographic method for determination of remdesivir, favipiravir and dexamethasone, in spiked human plasma: comparison with the published methods

Abstract Co-administration of COVID-19 RNA polymerase inhibitors, remdesivir and favipiravir, has synergistic benefits. Together they reduce viral load and inflammation more effectively than either drug used alone. Corticosteroids like dexamethasone are used alongside antivirals in multidrug combina...

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Main Authors: Rehab M. Abdelfatah, Esraa H. Abdelmomen, Eglal A. Abdelaleem, Refaat H. Abdelmoety, Aml A. Emam
Format: Article
Language:English
Published: BMC 2025-01-01
Series:BMC Chemistry
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Online Access:https://doi.org/10.1186/s13065-024-01366-1
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author Rehab M. Abdelfatah
Esraa H. Abdelmomen
Eglal A. Abdelaleem
Refaat H. Abdelmoety
Aml A. Emam
author_facet Rehab M. Abdelfatah
Esraa H. Abdelmomen
Eglal A. Abdelaleem
Refaat H. Abdelmoety
Aml A. Emam
author_sort Rehab M. Abdelfatah
collection DOAJ
description Abstract Co-administration of COVID-19 RNA polymerase inhibitors, remdesivir and favipiravir, has synergistic benefits. Together they reduce viral load and inflammation more effectively than either drug used alone. Corticosteroids like dexamethasone are used alongside antivirals in multidrug combination regimens. A new HPTLC method was utilized to isolate and quantitatively determine the three medicines of the COVID-19 therapeutic protocol, remdesivir, favipiravir and dexamethasone, using the anticoagulant apixaban as an internal standard in human plasma. The mobile phase system used a solvent mixture of ethyl acetate, hexane, and acetic acid (9:1:0.3, by volume). At 254 nm, well-resolved spots with Rf values of 0.3 for remdesivir, 0.64 for dexamethasone, and 0.77 for favipiravir have been observed. To ensure compliance with FDA regulations, a validation study was conducted. Quantitation limits as low as 0.1 µg/band have been achieved with remdesivir and dexamethasone, and 0.2 µg/band with favipiravir, demonstrating excellent sensitivities. From 97.07% to 102.77%, the drugs were recovered from human plasma that had been artificially spiked. The whiteness of the method has been assessed using RGB 12 algorithm and a percentage of whiteness of 95.6% has been obtained.
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issn 2661-801X
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publishDate 2025-01-01
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series BMC Chemistry
spelling doaj-art-9889db05dd4f40e484de44ba24b1e02c2025-01-12T12:06:44ZengBMCBMC Chemistry2661-801X2025-01-0119111210.1186/s13065-024-01366-1A newly developed high-performance thin layer chromatographic method for determination of remdesivir, favipiravir and dexamethasone, in spiked human plasma: comparison with the published methodsRehab M. Abdelfatah0Esraa H. Abdelmomen1Eglal A. Abdelaleem2Refaat H. Abdelmoety3Aml A. Emam4Pharmaceutical Analytical Chemistry, Faculty of Pharmacy, Beni-Suef UniversityPharmaceutical Chemistry Department, Faculty of Pharmacy, Nile Valley UniversityPharmaceutical Analytical Chemistry, Faculty of Pharmacy, Beni-Suef UniversityPharmaceutical Analytical Chemistry, Faculty of Pharmacy, Nahda University (NUB)Pharmaceutical Analytical Chemistry, Faculty of Pharmacy, Beni-Suef UniversityAbstract Co-administration of COVID-19 RNA polymerase inhibitors, remdesivir and favipiravir, has synergistic benefits. Together they reduce viral load and inflammation more effectively than either drug used alone. Corticosteroids like dexamethasone are used alongside antivirals in multidrug combination regimens. A new HPTLC method was utilized to isolate and quantitatively determine the three medicines of the COVID-19 therapeutic protocol, remdesivir, favipiravir and dexamethasone, using the anticoagulant apixaban as an internal standard in human plasma. The mobile phase system used a solvent mixture of ethyl acetate, hexane, and acetic acid (9:1:0.3, by volume). At 254 nm, well-resolved spots with Rf values of 0.3 for remdesivir, 0.64 for dexamethasone, and 0.77 for favipiravir have been observed. To ensure compliance with FDA regulations, a validation study was conducted. Quantitation limits as low as 0.1 µg/band have been achieved with remdesivir and dexamethasone, and 0.2 µg/band with favipiravir, demonstrating excellent sensitivities. From 97.07% to 102.77%, the drugs were recovered from human plasma that had been artificially spiked. The whiteness of the method has been assessed using RGB 12 algorithm and a percentage of whiteness of 95.6% has been obtained.https://doi.org/10.1186/s13065-024-01366-1COVID-19 antiviralsCo-administeredCorticosteroidsWhiteness
spellingShingle Rehab M. Abdelfatah
Esraa H. Abdelmomen
Eglal A. Abdelaleem
Refaat H. Abdelmoety
Aml A. Emam
A newly developed high-performance thin layer chromatographic method for determination of remdesivir, favipiravir and dexamethasone, in spiked human plasma: comparison with the published methods
BMC Chemistry
COVID-19 antivirals
Co-administered
Corticosteroids
Whiteness
title A newly developed high-performance thin layer chromatographic method for determination of remdesivir, favipiravir and dexamethasone, in spiked human plasma: comparison with the published methods
title_full A newly developed high-performance thin layer chromatographic method for determination of remdesivir, favipiravir and dexamethasone, in spiked human plasma: comparison with the published methods
title_fullStr A newly developed high-performance thin layer chromatographic method for determination of remdesivir, favipiravir and dexamethasone, in spiked human plasma: comparison with the published methods
title_full_unstemmed A newly developed high-performance thin layer chromatographic method for determination of remdesivir, favipiravir and dexamethasone, in spiked human plasma: comparison with the published methods
title_short A newly developed high-performance thin layer chromatographic method for determination of remdesivir, favipiravir and dexamethasone, in spiked human plasma: comparison with the published methods
title_sort newly developed high performance thin layer chromatographic method for determination of remdesivir favipiravir and dexamethasone in spiked human plasma comparison with the published methods
topic COVID-19 antivirals
Co-administered
Corticosteroids
Whiteness
url https://doi.org/10.1186/s13065-024-01366-1
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