DESENVOLVIMENTO E CARACTERIZAÇÃO DE SUSPENSÕES CONTENDO NANOCÁPSULAS DE ADAPALENO COM DIFERENTES NÚCLEOS OLEOSOS

Detalhes bibliográficos
Autor(a) principal: Barrios, Jerusa Goi
Data de Publicação: 2010
Tipo de documento: Dissertação
Idioma: por
Título da fonte: Repositório Institucional Universidade Franciscana
Texto Completo: http://www.tede.universidadefranciscana.edu.br:8080/handle/UFN-BDTD/482
Resumo: Acne is one of the most common inflammatory conditions affecting the skin. There are several drugs to treat it, but despite the benefits of these treatments in their free form, there are common side effects to them, especially when applied topically. Among these drugs is the adapalene with comedolitic action and effects on the abnormal process of keratinization and epidermal differentiation, phenomena present in acne vulgaris. This study aimed to prepare polymer nanocapsules of adapalene through the method of interfacial deposition of preformed polymer using different oil cores (tea tree oil and Miglyol®). The suspensions were characterized by determining the pH, particle diameter, polidispersion rate, zeta potential, association rate and dosage of the drug. The stability was determined at different temperatures and under light UVA. In vitro release studies and analysis of mathematical modeling of kinetic release profiles were carried out by comparing suspensions containing adapalene polymer nanocapsules and nanodispersions and without the presence of the polymer. The formulations were stored at room temperature (25 ° C), refrigerator (-4 ° C) and oven (40 ° C) for 3 months and analyzed at 0, 7, 15, 30, 60 and 90 days after preparation. Both suspensions containing Miglyol® polymer nanocapsules (NC-AD-Miglyol®) as the tea tree oil polymer nanocapsules (NC-AD-tea tree oil) showed acidic pH, particle diameter below 300 nm and zeta potential negative. The rate of association of adapalene in the NC-AD-tea tree oil was 95.4% while the NC-AD-Miglyol® was 84.1%. The dosage of the drug showed that the NCAD- tea tree oil exerts a greater stabilizing effect than the other formulations. The shelf life estimated for the NC-AD-tea tree oil was higher when compared to nanodispersion (ND) and NC-AD-Miglyol®. Mathematical modeling showed that the ND and NC-AD-Miglyol® followed a kinetic profile, according to the mono-exponential model with half-lives of 3.53 and 8.43 hours. On the other hand, NC-AD-tea tree oil suspension followed a bi-exponential, model with half-lives of 4.07 hours for the fast phase and 230.6 hours for the sustained phase. Therefore, we can say that the adapalene formulation NC-AD-Miglyol® locates largely more externally in the polymer nanocapsule, while in the NC-AD-tea tree oil, it is dissolved in the oil core of the polymer nanocapsule, suggesting a sustained release. We evaluated the photostability of adapalene nanocoated with Miglyol® oil and tea tree oil under UVA irradiation, and concluded that the nanoencapsulation with tea tree oil increases the stability of the active, offering increased protection it from degradation. In analysis by multiple scattering of light, the suspensions showed a tendency of sedimentation, but the NC-ADMiglyol ® proved to be more likely to destabilization. The validation of the method was satisfactory for all parameters analyzed. Though the results obtained, it can be concluded that the suspension containing NC-AD-tea tree oil showed better physical and chemical characteristics and stability, representing best technological feasibility fot the pharmaceutical area.
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spelling Alves, Marta PalmaFagan, Solange BinottoSilva, Cristiane de Bona daBarrios, Jerusa Goi2018-08-15T13:27:18Z2010-06-30Barrios, Jerusa Goi. DESENVOLVIMENTO E CARACTERIZAÇÃO DE SUSPENSÕES CONTENDO NANOCÁPSULAS DE ADAPALENO COM DIFERENTES NÚCLEOS OLEOSOS. 2010. 104f. Dissertação( Programa de Pós-Graduação em Nanociências) - Centro Universitário Franciscano, Santa Maria - RS .http://www.tede.universidadefranciscana.edu.br:8080/handle/UFN-BDTD/482Acne is one of the most common inflammatory conditions affecting the skin. There are several drugs to treat it, but despite the benefits of these treatments in their free form, there are common side effects to them, especially when applied topically. Among these drugs is the adapalene with comedolitic action and effects on the abnormal process of keratinization and epidermal differentiation, phenomena present in acne vulgaris. This study aimed to prepare polymer nanocapsules of adapalene through the method of interfacial deposition of preformed polymer using different oil cores (tea tree oil and Miglyol®). The suspensions were characterized by determining the pH, particle diameter, polidispersion rate, zeta potential, association rate and dosage of the drug. The stability was determined at different temperatures and under light UVA. In vitro release studies and analysis of mathematical modeling of kinetic release profiles were carried out by comparing suspensions containing adapalene polymer nanocapsules and nanodispersions and without the presence of the polymer. The formulations were stored at room temperature (25 ° C), refrigerator (-4 ° C) and oven (40 ° C) for 3 months and analyzed at 0, 7, 15, 30, 60 and 90 days after preparation. Both suspensions containing Miglyol® polymer nanocapsules (NC-AD-Miglyol®) as the tea tree oil polymer nanocapsules (NC-AD-tea tree oil) showed acidic pH, particle diameter below 300 nm and zeta potential negative. The rate of association of adapalene in the NC-AD-tea tree oil was 95.4% while the NC-AD-Miglyol® was 84.1%. The dosage of the drug showed that the NCAD- tea tree oil exerts a greater stabilizing effect than the other formulations. The shelf life estimated for the NC-AD-tea tree oil was higher when compared to nanodispersion (ND) and NC-AD-Miglyol®. Mathematical modeling showed that the ND and NC-AD-Miglyol® followed a kinetic profile, according to the mono-exponential model with half-lives of 3.53 and 8.43 hours. On the other hand, NC-AD-tea tree oil suspension followed a bi-exponential, model with half-lives of 4.07 hours for the fast phase and 230.6 hours for the sustained phase. Therefore, we can say that the adapalene formulation NC-AD-Miglyol® locates largely more externally in the polymer nanocapsule, while in the NC-AD-tea tree oil, it is dissolved in the oil core of the polymer nanocapsule, suggesting a sustained release. We evaluated the photostability of adapalene nanocoated with Miglyol® oil and tea tree oil under UVA irradiation, and concluded that the nanoencapsulation with tea tree oil increases the stability of the active, offering increased protection it from degradation. In analysis by multiple scattering of light, the suspensions showed a tendency of sedimentation, but the NC-ADMiglyol ® proved to be more likely to destabilization. The validation of the method was satisfactory for all parameters analyzed. Though the results obtained, it can be concluded that the suspension containing NC-AD-tea tree oil showed better physical and chemical characteristics and stability, representing best technological feasibility fot the pharmaceutical area.A acne é uma das condições inflamatórias mais comuns que afetam a pele. Existem diversos fármacos para o tratamento da acne, porém apesar dos benefícios desses tratamentos na sua forma livre, existem efeitos adversos comuns a eles, principalmente quando aplicados topicamente. Dentre estes fármacos, destaca-se o adapaleno com ação comedolítica e efeitos sobre o processo anormal de queratinização e diferenciação epidérmica, fenômenos presentes na acne vulgar. O presente trabalho teve como objetivo, preparar nanocápsulas poliméricas (NC) de adapaleno através do método de deposição interfacial do polímero pré-formado utilizando diferentes núcleos oleosos (Miglyol® e óleo de melaleuca). As suspensões foram caracterizadas através da determinação do pH, diâmetro de partícula, índice de polidispersão, potencial zeta, taxa de associação e doseamento do fármaco. A estabilidade foi determinada em diferentes temperaturas e frente à luz UVA; estudos de liberação in vitro e análises de modelagem matemática dos perfis cinéticos de liberação foram realizados comparando-se suspensões contendo NC de adapaleno e nanodispersões, sem a presença do polímero. As formulações foram armazenadas em temperatura ambiente (25 °C), geladeira (-4 °C) e estufa (40 °C) durante 3 meses e analisadas nos tempos 0, 7, 15, 30, 60 e 90 dias após preparação. Tanto as suspensões contendo NC com Miglyol® (NC-AD-Miglyol®) como as NC com óleo de melaleuca (NC-AD-Melaleuca) apresentaram pH ácido, diâmetro de partícula inferior a 300 nm e potencial zeta negativo. A taxa de associação do adapaleno na NC-AD-Melaleuca foi de 95,4% enquanto na NC-AD-Miglyol® foi 84,1%. Através do doseamento do ativo, concluiu-se que as NC-AD-Melaleuca exercem efeito estabilizante maior que as demais formulações. O prazo de validade estimado para a NC-AD-Melaleuca foi superior quando comparado à nanodispersão (ND) e a NC-AD-Miglyol®. A modelagem matemática demonstrou que a ND e a NC-AD-Miglyol® seguiram um perfil cinético segundo o modelo monoexponencial com tempo de meia-vida de 3,53 e 8,43 horas, respectivamente. Já a suspensão NC-AD-Melaleuca seguiu modelo biexponencial com tempo de meia-vida para a fase rápida de 4,07 horas e 230,6 horas para a fase sustentada. Pode-se concluir que o adapaleno na formulação NC-AD-Miglyol® encontra-se em grande parte mais externamente nas NC enquanto na NC-AD-Melaleuca, o fármaco encontra-se dissolvido no núcleo oleoso das NC, sugerindo dessa forma, uma liberação sustentada. Avaliou-se a fotoestabilidade do adapaleno nanoencapsulado com Miglyol® e óleo de melaleuca frente à irradiação por UVA e concluiu-se que a nanoencapsulação com óleo de melaleuca aumenta a estabilidade do ativo, protegendo-o da degradação. Em análises por espalhamento múltiplo de luz, as suspensões apresentaram tendência à sedimentação, porém a NC-AD-Miglyol® demonstrou mais probabilidade à desestabilização. A validação da metodologia apresentou resultados satisfatórios para todos os parâmetros analisados. Através dos resultados obtidos, pode-se concluir que a suspensão contendo NC-AD-Melaleuca apresentou melhores características físico-químicas e de estabilidade, representando melhor viabilidade tecnológica para a área farmacêutica.Submitted by MARCIA ROVADOSCHI (marciar@unifra.br) on 2018-08-15T13:27:18Z No. of bitstreams: 2 license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) Dissertacao_JerusaGoiBarrios.pdf: 2507299 bytes, checksum: b0357f55d1ddf8dd63d987592cf16a6e (MD5)Made available in DSpace on 2018-08-15T13:27:18Z (GMT). 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dc.title.por.fl_str_mv DESENVOLVIMENTO E CARACTERIZAÇÃO DE SUSPENSÕES CONTENDO NANOCÁPSULAS DE ADAPALENO COM DIFERENTES NÚCLEOS OLEOSOS
title DESENVOLVIMENTO E CARACTERIZAÇÃO DE SUSPENSÕES CONTENDO NANOCÁPSULAS DE ADAPALENO COM DIFERENTES NÚCLEOS OLEOSOS
spellingShingle DESENVOLVIMENTO E CARACTERIZAÇÃO DE SUSPENSÕES CONTENDO NANOCÁPSULAS DE ADAPALENO COM DIFERENTES NÚCLEOS OLEOSOS
Barrios, Jerusa Goi
Acne, adapaleno, nanocápsulas, caracterização, liberação in vitro, modelagem cinética, óleo de melaleuca
Acne, adapalene, nanocapsules, characterization, in vitro release, kinetics modeling, tea tree oil.
Biociências e Nanomateriais
title_short DESENVOLVIMENTO E CARACTERIZAÇÃO DE SUSPENSÕES CONTENDO NANOCÁPSULAS DE ADAPALENO COM DIFERENTES NÚCLEOS OLEOSOS
title_full DESENVOLVIMENTO E CARACTERIZAÇÃO DE SUSPENSÕES CONTENDO NANOCÁPSULAS DE ADAPALENO COM DIFERENTES NÚCLEOS OLEOSOS
title_fullStr DESENVOLVIMENTO E CARACTERIZAÇÃO DE SUSPENSÕES CONTENDO NANOCÁPSULAS DE ADAPALENO COM DIFERENTES NÚCLEOS OLEOSOS
title_full_unstemmed DESENVOLVIMENTO E CARACTERIZAÇÃO DE SUSPENSÕES CONTENDO NANOCÁPSULAS DE ADAPALENO COM DIFERENTES NÚCLEOS OLEOSOS
title_sort DESENVOLVIMENTO E CARACTERIZAÇÃO DE SUSPENSÕES CONTENDO NANOCÁPSULAS DE ADAPALENO COM DIFERENTES NÚCLEOS OLEOSOS
author Barrios, Jerusa Goi
author_facet Barrios, Jerusa Goi
author_role author
dc.contributor.advisor1.fl_str_mv Alves, Marta Palma
dc.contributor.referee1.fl_str_mv Fagan, Solange Binotto
dc.contributor.referee2.fl_str_mv Silva, Cristiane de Bona da
dc.contributor.author.fl_str_mv Barrios, Jerusa Goi
contributor_str_mv Alves, Marta Palma
Fagan, Solange Binotto
Silva, Cristiane de Bona da
dc.subject.por.fl_str_mv Acne, adapaleno, nanocápsulas, caracterização, liberação in vitro, modelagem cinética, óleo de melaleuca
topic Acne, adapaleno, nanocápsulas, caracterização, liberação in vitro, modelagem cinética, óleo de melaleuca
Acne, adapalene, nanocapsules, characterization, in vitro release, kinetics modeling, tea tree oil.
Biociências e Nanomateriais
dc.subject.eng.fl_str_mv Acne, adapalene, nanocapsules, characterization, in vitro release, kinetics modeling, tea tree oil.
dc.subject.cnpq.fl_str_mv Biociências e Nanomateriais
description Acne is one of the most common inflammatory conditions affecting the skin. There are several drugs to treat it, but despite the benefits of these treatments in their free form, there are common side effects to them, especially when applied topically. Among these drugs is the adapalene with comedolitic action and effects on the abnormal process of keratinization and epidermal differentiation, phenomena present in acne vulgaris. This study aimed to prepare polymer nanocapsules of adapalene through the method of interfacial deposition of preformed polymer using different oil cores (tea tree oil and Miglyol®). The suspensions were characterized by determining the pH, particle diameter, polidispersion rate, zeta potential, association rate and dosage of the drug. The stability was determined at different temperatures and under light UVA. In vitro release studies and analysis of mathematical modeling of kinetic release profiles were carried out by comparing suspensions containing adapalene polymer nanocapsules and nanodispersions and without the presence of the polymer. The formulations were stored at room temperature (25 ° C), refrigerator (-4 ° C) and oven (40 ° C) for 3 months and analyzed at 0, 7, 15, 30, 60 and 90 days after preparation. Both suspensions containing Miglyol® polymer nanocapsules (NC-AD-Miglyol®) as the tea tree oil polymer nanocapsules (NC-AD-tea tree oil) showed acidic pH, particle diameter below 300 nm and zeta potential negative. The rate of association of adapalene in the NC-AD-tea tree oil was 95.4% while the NC-AD-Miglyol® was 84.1%. The dosage of the drug showed that the NCAD- tea tree oil exerts a greater stabilizing effect than the other formulations. The shelf life estimated for the NC-AD-tea tree oil was higher when compared to nanodispersion (ND) and NC-AD-Miglyol®. Mathematical modeling showed that the ND and NC-AD-Miglyol® followed a kinetic profile, according to the mono-exponential model with half-lives of 3.53 and 8.43 hours. On the other hand, NC-AD-tea tree oil suspension followed a bi-exponential, model with half-lives of 4.07 hours for the fast phase and 230.6 hours for the sustained phase. Therefore, we can say that the adapalene formulation NC-AD-Miglyol® locates largely more externally in the polymer nanocapsule, while in the NC-AD-tea tree oil, it is dissolved in the oil core of the polymer nanocapsule, suggesting a sustained release. We evaluated the photostability of adapalene nanocoated with Miglyol® oil and tea tree oil under UVA irradiation, and concluded that the nanoencapsulation with tea tree oil increases the stability of the active, offering increased protection it from degradation. In analysis by multiple scattering of light, the suspensions showed a tendency of sedimentation, but the NC-ADMiglyol ® proved to be more likely to destabilization. The validation of the method was satisfactory for all parameters analyzed. Though the results obtained, it can be concluded that the suspension containing NC-AD-tea tree oil showed better physical and chemical characteristics and stability, representing best technological feasibility fot the pharmaceutical area.
publishDate 2010
dc.date.issued.fl_str_mv 2010-06-30
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dc.identifier.citation.fl_str_mv Barrios, Jerusa Goi. DESENVOLVIMENTO E CARACTERIZAÇÃO DE SUSPENSÕES CONTENDO NANOCÁPSULAS DE ADAPALENO COM DIFERENTES NÚCLEOS OLEOSOS. 2010. 104f. Dissertação( Programa de Pós-Graduação em Nanociências) - Centro Universitário Franciscano, Santa Maria - RS .
dc.identifier.uri.fl_str_mv http://www.tede.universidadefranciscana.edu.br:8080/handle/UFN-BDTD/482
identifier_str_mv Barrios, Jerusa Goi. DESENVOLVIMENTO E CARACTERIZAÇÃO DE SUSPENSÕES CONTENDO NANOCÁPSULAS DE ADAPALENO COM DIFERENTES NÚCLEOS OLEOSOS. 2010. 104f. Dissertação( Programa de Pós-Graduação em Nanociências) - Centro Universitário Franciscano, Santa Maria - RS .
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