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Utilize este identificador para citar ou criar um link para este item: http://acervodigital.unesp.br/handle/11449/117342
Título: 
Increasing Doxycycline Hyclate Photostability by Complexation with beta-Cyclodextrin
Autor(es): 
Instituição: 
  • Universidade Estadual Paulista (UNESP)
  • Univ Nacl Cordoba
ISSN: 
1530-9932
Financiador: 
  • Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
  • Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
  • PADC-FCF
  • Fundação para o Desenvolvimento da UNESP (FUNDUNESP)
  • Secretaria de Ciencia y Tecnica de la Universidad Nacional de Cordoba (SECyT)
  • Consejo Nacional de Investigaciones Cientificas y Tecnologicas de la Nacion Argentina (CONICET)
Resumo: 
Doxycycline hyclate (DOX) is a highly photosensitive drug, a feature that limits the stability of the corresponding dosage forms. The main objectives of this work were the preparation and characterization of an inclusion complex of DOX with beta-cyclodextrin (beta CD) and to investigate if this approach could improve the photostability of the drug. Guest-host interactions were investigated using nuclear magnetic resonance, which were afterwards combined with molecular modeling methods to study the complex formation and its three-dimensional structure was proposed. A freeze-drying method was applied to obtain the complex in the solid state, which was further confirmed by thermal and spectroscopic techniques. To evaluate the complexation effect on DOX integrity, the photostability of the inclusion complex was studied, with a significant decrease in the photodegradation of DOX being found in aqueous solution upon complexation. Finally, the photoprotection produced by the complexation was evaluated by means of an antimicrobial assay. Overall, the presented results suggest that the formulation of DOX complexed with beta CD constitutes an interesting approach for the preparation of pharmaceutical dosage forms of DOX with enhanced stability properties.
Data de publicação: 
1-Out-2014
Citação: 
Aaps Pharmscitech. New York: Springer, v. 15, n. 5, p. 1209-1217, 2014.
Duração: 
1209-1217
Publicador: 
Springer
Palavras-chaves: 
  • beta-cyclodextrin
  • doxycycline hyclate
  • microbiological assay
  • molecular modeling
  • photostability
Fonte: 
http://dx.doi.org/10.1208/s12249-014-0150-7
Endereço permanente: 
Direitos de acesso: 
Acesso restrito
Tipo: 
outro
Fonte completa:
http://repositorio.unesp.br/handle/11449/117342
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