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Reduced bioavailability of cyclosporine A in rats by mung bean seed coat extract
Li, Xiping; Gao, Ping; Zhang, Chengliang; Wu, Tao; Xu, Yanjiao; Liu, Dong.
  • Li, Xiping; Huazhong University of Science and Technology. Tongji Medical College. Tongji Hospital. Wuhan. CN
  • Gao, Ping; Huazhong University of Science and Technology. Tongji Medical College. Tongji Hospital. Wuhan. CN
  • Zhang, Chengliang; Huazhong University of Science and Technology. Tongji Medical College. Tongji Hospital. Wuhan. CN
  • Wu, Tao; Huazhong University of Science and Technology. Tongji Medical College. Tongji Hospital. Wuhan. CN
  • Xu, Yanjiao; Huazhong University of Science and Technology. Tongji Medical College. Tongji Hospital. Wuhan. CN
  • Liu, Dong; Huazhong University of Science and Technology. Tongji Medical College. Tongji Hospital. Wuhan. CN
Braz. j. pharm. sci ; 50(3): 591-597, Jul-Sep/2014. tab, graf
Article in English | LILACS | ID: lil-728696
ABSTRACT
Mung bean seed coat (MBSC) is a healthcare product in Asian countries. The aim of this study was to investigate the effect of an MBSC ethanol extract on the bioavailability of cyclosporine A (CsA) in rats. Rats were orally dosed with CsA alone or in combination with MBSC ethanol extracts (500 mg/kg, p.o.). The blood levels of CsA were assayed by liquid chromatography with an electrospray ionization source and tandem mass spectrometry (LC-MS/MS). The everted rat intestinal sac technique was used to determine the influence of MBSC on the absorption of CsA. The results reveal that combined CsA intake with MBSC decreased the Cmax, AUC0-t, t1/2z and MRT0-t values of CsA by 24.96%, 47.28%, 34.73% and 23.58%, respectively (P<0.05), and significantly raised the CL/F by 51.97% (P<0.01). The in vitro results demonstrated that significantly less CsA was absorbed (P<0.05). The overall results indicate that after being concomitantly ingested, MBSC reduced the bioavailability of CsA, at least partially, in the absorption phase.
RESUMO
O tegumento da semente de feijão-mungo (MBSC) é um produto para tratamento de saúde em países asiáticos. O objetivo deste estudo foi investigar o efeito de extrato etanólico de MBSC na biodisponibilidade da ciclosporina A (CVsA) em ratos. Administrou-se aos ratos CsA sozinha ou em associação com extrato etanólico de MBSC (500 mg/kg, p.o.), por via oral. Os níveis sanguíneos de CSA foram determinados por cromatografia a líquido com ionização por electrospray, associada à espectrometria de massas (LC-MS/MS). Utilizou-se a técnica de inversão do saco intestinal de rato para determinar a influência do MBSC na absorção de CsA. Os resultados revelaram que a ingestão combinada de CsA e MBSC diminuiu os valores de Cmax, AUC0-t, t1/2z e MRT0-t de CsA em 24%, 47,28%, 34,73% e 23,58%, respectivamente (P<0.05), e aumentou, significativamente, CL/F em 51,79% (P<0.05). Os resultados in vitro demostraram que, significativamente, menos CsA foi absorvida (P<0.05). Os resultados totais indicaram que após ser concomitantemente ingerida, a MBSC reduziu, ao menos parcialmente, a biodisponibilidade de CsA, na fase de absorção.
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Full text: Available Index: LILACS (Americas) Main subject: Rats / Biological Availability / Cyclosporine / Fabaceae Limits: Animals Language: English Journal: Braz. j. pharm. sci Year: 2014 Type: Article / Project document Affiliation country: China Institution/Affiliation country: Huazhong University of Science and Technology/CN

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Full text: Available Index: LILACS (Americas) Main subject: Rats / Biological Availability / Cyclosporine / Fabaceae Limits: Animals Language: English Journal: Braz. j. pharm. sci Year: 2014 Type: Article / Project document Affiliation country: China Institution/Affiliation country: Huazhong University of Science and Technology/CN