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Antifungal activity of topical microemulsion containing a thiophene derivative BJM
Guimarães,Geovani Pereira; Reis,Mysrayn Yargo de Freitas Araújo; Silva,Dayanne Tomaz Casimiro da; Mendonça Junior,Francisco Jaime Bezerra; Converti,Attílio; Pessoa Jr,Adalberto; Damasceno,Bolívar Ponciano Goulart de Lima; Silva,José Alexsandro da.
Fungal infections have become a major problem of worldwide concern. Yeasts belonging to the Candida genus and the pathogenic fungus Cryptococcus neoformans are responsible for different clinical manifestations, especially in immunocompromised patients. Antifungal therapies are currently based on a few chemotherapeutic agents that have problems related to effectiveness and resistance profiles. Microemulsions are isotropic, thermodynamically stable transparent systems of oil, water and surfactant that can improve the solubilization of lipophilic drugs. Taking into account the need for more effective and less toxic drugs along with the potential of thiophene derivatives as inhibitors of pathogenic fungi growth, this study aimed to evaluate the antifungal...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Antifungal susceptibility; Cryptococcus neoformans; Microemulsion; Thiophene derivatives.
Ano: 2014 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822014000200024
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Phenobarbital loaded microemulsion: development, kinetic release and quality control BJPS
Figueiredo,Kayo Alves; Neves,Jamilly Kelly Oliveira; Silva,José Alexsandro da; Freitas,Rivelilson Mendes de; Carvalho,André Luis Menezes.
ABSTRACT This study aimed to obtain and characterize a microemulsion (ME) containing phenobarbital (PB). The PB was incorporated in the proportion of 5% and 10% in a microemulsion system containing Labrasol(r), ethanol, isopropyl myristate and purified water. The physicochemical characterization was performed and the primary stability of the ME was evaluated. An analytical method was developed using spectrophotometry in UV  = 242 nm. The kinetics of the in vitro release (Franz model) of the ME and the emulsion (EM) containing PB was evaluated. The incorporation of PB into ME at concentrations of 5 and 10% did not change pH and resistance to centrifugation. There was an increase in particle size, a decrease of conductivity and a change in the refractive...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Microemulsion/physicochemical characterization; Microemulsion/In vitro release; Phenobarbital/microemulsion system/evaluation; Nanotechnology.
Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502016000200251
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