Farmacocinética pré-clínica do composto 1-(2,6-diclorofenil)indolin-2-ona (DICCIC), pró-fármaco de diclofenaco
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Data
2012-02-23
Autores
Campos, Michel Leandro de [UNESP]
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Editor
Universidade Estadual Paulista (Unesp)
Resumo
O pró-fármaco de diclofenaco, 1-(2,6-diclorofenil)indolin-2-ona (DICCIC), apresenta atividade anti-inflamatória comparável ao diclofenaco sem efeitos gastroulcerativos. Essa vantagem torna-o uma possível alternativa terapêutica em quadros de inflamação onde há a indicação de anti-inflamatórios não esteroidais. Assim neste trabalho, foi investigado o perfil farmacocinético do DICCIC e seu potencial para conversão no diclofenaco. O DICCIC e o diclofenaco foram administrados em dose única a ratos Wistar (n=20) intravenosamente. Foram colhidas amostras seriadas de sangue. As amostras de plasma foram processadas e o extrato final do processamento foi analisado por CLAE. O sistema cromatográfico consistiu de uma bomba 600E Waters®, com detector UV-vis operando a 276 e 250 nm. A separação foi feita em coluna Symmetry C18 (4,6 x 250 mm, 5µm) sob eluição da fase móvel metanol:acetonitrila: ácido metanoico 0,1%, na proporção de 5:55:40, em modo isocrático e fluxo de 1 mL/min. O método bioanalítico foi validado e seus limites de confiança foram apropriados para sua aplicação. As médias dos parâmetros farmacocinéticos foram calculadas pelas curvas de concentração plasmática versus tempo e comparadas pelo teste de Mann-Whitney (p<0,05). A meia-vida do diclofenaco a partir de DICCIC (49,7 ± 10,9 min) foi significativamente menor que a meia-vida do diclofenaco após administração de diclofenaco (188,3 ± 78 min). O mesmo foi observado para a área sob a curva, cujo resultado para diclofenaco de DICCIC (48,8 ± 4,2 µg.min/mL) foi mais de dez vezes menor que a do diclofenaco após administração...
The diclofenac prodrug, 1-(2,6-dichlorophenyl)indolin-2-one (DICCIC), has anti-inflammatory effects comparable to diclofenac, but without gastroulcerative effect. This advantage makes it a potential therapeutic approach in inflammation frames where there is an indication of nonsteroidal anti-inflammatory drugs. Thus, in this study, we investigated the pharmacokinetic profile of DICCIC and its potential for conversion to diclofenac. The DICCIC and diclofenac were administered in single dose to Wistar rats (n = 20) intravenously. Blood samples were collected serially. The plasma samples were processed and thereafter analyzed by HPLC. The HPLC system consisted of a Waters® 600E pump with a UV-Vis detector (Waters® 2487), and a reverse phase C18 column (5µm, 250mm x 4.6 mm I.D, Symmetry®, Waters). The mobile phase was 0.1% methanoic acid:methanol:acetonitrile (40:5:55) at a flow rate 1 mL/min. The UV-Vis detector was set to 276 nm for detection of diclofenac and naproxen (Internal Standard), and 250 nm for DICCIC. The HPLC method for simultaneous determination of diclofenac and DICCIC was validated to perform the profile evaluation. The confidence limits were appropriate for its application. The mean pharmacokinetic parameters were then calculated (using) the curves of plasma concentration versus time and compared using the Mann-Whitney test (p <0.05). The half-life of diclofenac from DICCIC (49.7 ± 10.9 min) was significantly lower than the half-life of diclofenac after administration of diclofenac (188.3 ± 78 min). The area under the curve for diclofenac from DICCIC (48.8 ± 4.2 μg.min/mL) was more than ten-fold lower than that of diclofenac originated from diclofenac ... (Complete abstract click electronic access below)
The diclofenac prodrug, 1-(2,6-dichlorophenyl)indolin-2-one (DICCIC), has anti-inflammatory effects comparable to diclofenac, but without gastroulcerative effect. This advantage makes it a potential therapeutic approach in inflammation frames where there is an indication of nonsteroidal anti-inflammatory drugs. Thus, in this study, we investigated the pharmacokinetic profile of DICCIC and its potential for conversion to diclofenac. The DICCIC and diclofenac were administered in single dose to Wistar rats (n = 20) intravenously. Blood samples were collected serially. The plasma samples were processed and thereafter analyzed by HPLC. The HPLC system consisted of a Waters® 600E pump with a UV-Vis detector (Waters® 2487), and a reverse phase C18 column (5µm, 250mm x 4.6 mm I.D, Symmetry®, Waters). The mobile phase was 0.1% methanoic acid:methanol:acetonitrile (40:5:55) at a flow rate 1 mL/min. The UV-Vis detector was set to 276 nm for detection of diclofenac and naproxen (Internal Standard), and 250 nm for DICCIC. The HPLC method for simultaneous determination of diclofenac and DICCIC was validated to perform the profile evaluation. The confidence limits were appropriate for its application. The mean pharmacokinetic parameters were then calculated (using) the curves of plasma concentration versus time and compared using the Mann-Whitney test (p <0.05). The half-life of diclofenac from DICCIC (49.7 ± 10.9 min) was significantly lower than the half-life of diclofenac after administration of diclofenac (188.3 ± 78 min). The area under the curve for diclofenac from DICCIC (48.8 ± 4.2 μg.min/mL) was more than ten-fold lower than that of diclofenac originated from diclofenac ... (Complete abstract click electronic access below)
Descrição
Palavras-chave
Farmacocinetica, Diclofenaco, Agentes anti-inflamatorios, Antifúngicos, Anti-inflammatory drugs
Como citar
CAMPOS, Michel Leandro de. Farmacocinética pré-clínica do composto 1-(2,6-diclorofenil)indolin-2-ona (DICCIC), pró-fármaco de diclofenaco. 2012. 97 f. Dissertação (mestrado) - Universidade Estadual Paulista, Faculdade de Ciências Farmacêuticas, 2012.