Pharmaceutical development and technology · 2012
Effect of small changes in natural origin-based emulsion systems on hydrocortisone skin absorption and performance: a comparison of two in vivo methods.
Сравнительное исследованиеСтатьяПоддержка исследования: вне правительства СШАНазвание и аннотация: Перевод в очереди
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Pantelic Ivana, Lukic Milica, Markovic Bojan, Daniels Rolf, Vesic Sonja, Vuleta Gordana, Savic Snezana
Аннотация
CONTEXT: Alkyl polyglucoside surfactants (APG) remain prominent natural origin stabilizers offering a prospect of combining satisfactory stability with mild dermatological properties and complete biodegradability.
OBJECTIVE: With the purpose of adjusting the dose to a patient's needs, dilution of commercial corticosteroid formulations is a practice which may modify efficacy uncontrolledly. The rational of the study was to investigate whether a simple change in ready-to-use bases (co-solvent addition) could address these needs in a more predictive manner.
METHODS: Hydrocortisone (HC) delivery from such emulsion systems was comparatively assessed employing two in vivo methods: the established human skin blanching assay versus skin stripping technique.
RESULTS: HC permeation data obtained after three dose durations showed better overall performance of the APG-stabilized bases relative to reference ones. Although the solubility study showed that all the assessed active samples retained equal thermodynamic activity, diverse HC permeation/penetration implies the importance of the applied base's colloidal structure and/or changes endured. Isopropyl alcohol (IPA) addition offered faster drug penetration enhancement, while glycerol as a moisturizing agent influenced HC penetration through the increase in skin hydration.
CONCLUSION: Although the performed in vivo methods cannot be considered alternative, skin stripping technique proved to be a cost-efficient mode of percutaneous penetration assessment, providing additional information on vehicle-skin interactions.
OBJECTIVE: With the purpose of adjusting the dose to a patient's needs, dilution of commercial corticosteroid formulations is a practice which may modify efficacy uncontrolledly. The rational of the study was to investigate whether a simple change in ready-to-use bases (co-solvent addition) could address these needs in a more predictive manner.
METHODS: Hydrocortisone (HC) delivery from such emulsion systems was comparatively assessed employing two in vivo methods: the established human skin blanching assay versus skin stripping technique.
RESULTS: HC permeation data obtained after three dose durations showed better overall performance of the APG-stabilized bases relative to reference ones. Although the solubility study showed that all the assessed active samples retained equal thermodynamic activity, diverse HC permeation/penetration implies the importance of the applied base's colloidal structure and/or changes endured. Isopropyl alcohol (IPA) addition offered faster drug penetration enhancement, while glycerol as a moisturizing agent influenced HC penetration through the increase in skin hydration.
CONCLUSION: Although the performed in vivo methods cannot be considered alternative, skin stripping technique proved to be a cost-efficient mode of percutaneous penetration assessment, providing additional information on vehicle-skin interactions.