Исследованы биофармацевтические свойства модельных гелевых композиций c экстрактом корня барбариса и использованием в качестве гелеобразователей метилцеллюлозы, натриевой соли карбоксиметилцеллюлозы, натриевой соли альгиновой кислоты и поливинилового спирта методами прямой диффузии в агаровый гель и диализа через полупроницаемую мембрану. Определены кинетические закономерности процесса и скорости набухания исследуемых гелевых основ. Показана целесообразность использования натриевой соли альгиновой кислоты для получения стоматологического геля с экстрактом корня барбариса, обладающего специфической бактериостатической активностью в отношении таких пародонтопатогенных микроорганизмов, как Porphyromonas gingivalis, Prevotella intermedia, Prevotella nigrescens и Actinobacillus actinomycetemcomitans, для профилактики и лечения воспалительных заболеваний пародонта.
Intranasal administration of H1-histamine receptor blockers may be a promising approach to the treatment of allergic rhinitis. Earlier, an original composition of a nasal spray containing fexofenadine hydrochloride and ammonium glycyrrhizinate and demonstrating a high level of therapeutic efficacy, was developed.The aim of the study was to develop and validate a method of the quantitative determination of active pharmaceutical ingredients fexofenadine hydrochloride and ammonium glycyrrhizinate in a spray for intranasal administration.Materials and methods. During the development and validation of the method of the fexofenadine hydrochloride and ammonium glycyrrhizinate quantitative determination in a nasal spray, the method of high performance liquid chromatography was used: a Dionex Ultimate 3000 UV chromatograph with a Luna C18 column (2) containing octadecylsilicagel with a 5 μm grain size as a sorbent. The analysis and validation procedures were performed in accordance with the requirements of the State Pharmacopoeia of the Russian Federation, the XIVth edition.Results. The study showed that for the simultaneous quantitative determination of fexofenadine hydrochloride and ammonium glycyrrhizinate, the optimal elution regime is a gradient mode with a mobile phase containing 50 mmol/L potassium dihydrogen phosphate solution with methanol (45:55), which ensured the separation of the components in the 20 minutes interval. The validation procedures showed that the developed methodology correspond to all the criteria of validity in terms of the following indicators: correctness, precision, specificity and linearity in the analytical area.Conclusion. The obtained results indicate the possibility of using the method of high-performance liquid chromatography in a gradient elution mode with a mobile phase of the composition of a 50 mmol/L solution of potassium dihydrogen phosphate with methanol (45:55) for the simultaneous quantitative determination of active pharmaceutical ingredients – fexofenadine hydrochloride and ammonium glycyrrhizinate as parts of a promising nasal spray for the allergic rhinitis treatment.
Перспективность разработки наружной лекарственной формы с фексофенадином обусловлена возможностью её использования как в симптоматической, так и в комбинированной терапии аллергических проявлений кожи, а также расширением фармацевтического рынка антигистаминных лекарственных средств для наружного применения. В статье изложены исследования по выбору оптимального состава геля с фексофенадином противоаллергического действия, а также обоснован выбор необходимых вспомогательных веществ.Ключевые слова: фексофенадин, гели, мягкая лекарственная форма, антигистаминные препараты.The prospects of topical formulation development with fexofenadine are conditioned by the possibility of its use in symptomatic, as well as in the combined therapy of allergic reactions on a skin, and the expansion of the pharmaceutical market of antihistamine drugs for external application. The article presents a study of a choice of optimal gel composition with fexofenadine with antiallergic action, we have also substantiated the choice of necessary auxiliary substances.
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