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Doctoral Thesis
DOI
https://doi.org/10.11606/T.9.2017.tde-17082017-100018
Document
Author
Full name
Felipe Pereira Fernandes
E-mail
Institute/School/College
Knowledge Area
Date of Defense
Published
São Paulo, 2017
Supervisor
Committee
Ferraz, Humberto Gomes (President)
Araujo, Gabriel Lima Barros de
Duque, Marcelo Dutra
Minarini, Paulo Roberto Regazi
Romano, Marcelo Munhóes
Title in Portuguese
Desenvolvimento e caracterização de filmes e comprimidos bucais a base de pectina e goma gelana para liberação tópica de triancinolona
Keywords in Portuguese
Comprimidos
Filmes
Goma Gelana
Mucoadesivi-dade.
Pectina
Triancinolona
Abstract in Portuguese
O tratamento farmacológico de patologias bucais é conduzido, geralmente, por via de adminis-tração local. No entanto, devido ao pouco tempo de permanência do fármaco no local de ação, esse tratamento pode ser bastante comprometido. Assim, este trabalho teve por objetivo o de-senvolvimento de formas farmacêuticas que proporcionem a liberação local de triancinolona na cavidade oral. Foram produzidos filmes e comprimidos mucoadesivos a partir de polímeros naturais como gelana e pectina. Os filmes bucais foram preparados por meio de evaporação do solvente (solvent casting) utilizando diferentes quantidades de polímeros. As matérias-primas e os filmes foram caracterizados fisico quimicamente utilizando espectroscopia vibracional (in-fravermelho com transformada de Fourier e Raman) e difração de raios X. As propiedades físicas e mecânicas dos filmes também foram avaliadas. Além disso, realizou-se os ensaios de mucoadesividade e de dissolução do fármaco. Os comprimidos foram preparados por com-pressão direta usando como base os polímeros naturais. Diferentes parâmetros em relação as misturas e as formulações foram avaliados tais como as propriedades de fluxo dos pós consti-tuintes, peso médio, dureza, friabilidade e desintegração. Em relação aos filmes bucais, estes foram obtidos com sucesso através de um método simples, sem a utilização de agentes reticu-lantes, ácidos ou solventes orgânicos. Todos apresentaram bons resultados nas propriedades avaliadas, no entanto as formulações com quantidades intermediarias de polímeros foram as melhores. Dentre as formulações de comprimidos preparadas, apenas 4 apresentaram boas ca-racterísticas, no entanto, os resultados dos ensaios de dissolução mostraram que estas formula-ções têm capacidade de agir como sistema de liberação controlada de fármacos.
Title in English
Development and characterization of films and buccal tablets based on pectin and gellan gum for the topical release of triamcinolone.
Keywords in English
Films
Gellan Gum
Mucoadhesion.
Pectin
Tablets
Triamcinolone
Abstract in English
Pharmacological treatment of oral pathologies is usually conducted by local administration. However, due to the short time the drug stays in the site of action, this treatment can be quite compromised. Thus, the objective of this work was to develop pharmaceutical forms that pro-vide the local release of triamcinolone in the oral cavity. Mucoadhesive films and tablets were made from natural polymers such as gellan and pectin. The buccal films were prepared by sol-vent casting using different amounts of polymers. The raw materials and films were characte-rized physically chemically using vibrational spectroscopy (FTIR and Raman) and X-ray diffraction. The physical and mechanical properties of the films were also evaluated. In addi-tion, the mucoadhesive and drug dissolution tests were performed. The tablets were prepared by direct pressing with the natural polymers. Different parameters in relation to mixtures and formulations were evaluated such as the flow properties of the constituent powders, average weight, hardness, friability and disintegration. In relation to oral films, these were successfully obtained by a simple method, without the use of crosslinking agents, acids or organic solvents. All presented good results in the evaluated properties, however the formulations with interme-diate amounts of polymers were the best. Among the tablet formulations prepared, only 4 sho-wed good characteristics, however, the dissolution test results showed that these formulations have the ability to act as a controlled drug delivery system.
 
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Publishing Date
2017-08-28
 
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