华中科技大学学报(医学版)
華中科技大學學報(醫學版)
화중과기대학학보(의학판)
ACTA UNIVERSITATIS MEDICINAE TONGJI
2010年
1期
82-86
,共5页
欧阳英英%李珂%荣爽%姚平%杨年红%孙秀发%刘烈刚
歐暘英英%李珂%榮爽%姚平%楊年紅%孫秀髮%劉烈剛
구양영영%리가%영상%요평%양년홍%손수발%류렬강
姜黄素%血红素氧化酶-1%抗氧化酶%氧化损伤
薑黃素%血紅素氧化酶-1%抗氧化酶%氧化損傷
강황소%혈홍소양화매-1%항양화매%양화손상
curcumin%heme oxygenase-1%ethanol%oxidative stress
目的 研究血红素氧化酶-1(HO-1)在姜黄素拮抗乙醇氧化损伤过程中所起的作用.方法 通过亚细胞分离法提取微粒体,测定姜黄素预作用大鼠原代肝细胞中HO-1的活性,确定姜黄素对HO-1的诱导情况.通过抑制剂ZnPPⅨ和诱导剂Hemin的加入,抑制和诱导HO-1的表达与活性,通过检测细胞培养上清液中谷草转氨酶(AST)、乳酸脱氢酶(LDH)活性以及肝细胞的氧化-抗氧化指标,确定HO-1在姜黄素拮抗乙醇所致肝细胞氧化损伤过程中的作用.结果姜黄素能够诱导HO-1的活性,在姜黄素15 μmol/L和提前1 h作用时HO-1水平达到高峰.且HO-1的活性和表达与肝细胞的抗氧化水平明显相关.结论 姜黄素对肝细胞有明显的保护作用,主要表现在提高细胞HO-1的活性及表达水平.
目的 研究血紅素氧化酶-1(HO-1)在薑黃素拮抗乙醇氧化損傷過程中所起的作用.方法 通過亞細胞分離法提取微粒體,測定薑黃素預作用大鼠原代肝細胞中HO-1的活性,確定薑黃素對HO-1的誘導情況.通過抑製劑ZnPPⅨ和誘導劑Hemin的加入,抑製和誘導HO-1的錶達與活性,通過檢測細胞培養上清液中穀草轉氨酶(AST)、乳痠脫氫酶(LDH)活性以及肝細胞的氧化-抗氧化指標,確定HO-1在薑黃素拮抗乙醇所緻肝細胞氧化損傷過程中的作用.結果薑黃素能夠誘導HO-1的活性,在薑黃素15 μmol/L和提前1 h作用時HO-1水平達到高峰.且HO-1的活性和錶達與肝細胞的抗氧化水平明顯相關.結論 薑黃素對肝細胞有明顯的保護作用,主要錶現在提高細胞HO-1的活性及錶達水平.
목적 연구혈홍소양화매-1(HO-1)재강황소길항을순양화손상과정중소기적작용.방법 통과아세포분리법제취미립체,측정강황소예작용대서원대간세포중HO-1적활성,학정강황소대HO-1적유도정황.통과억제제ZnPPⅨ화유도제Hemin적가입,억제화유도HO-1적표체여활성,통과검측세포배양상청액중곡초전안매(AST)、유산탈경매(LDH)활성이급간세포적양화-항양화지표,학정HO-1재강황소길항을순소치간세포양화손상과정중적작용.결과강황소능구유도HO-1적활성,재강황소15 μmol/L화제전1 h작용시HO-1수평체도고봉.차HO-1적활성화표체여간세포적항양화수평명현상관.결론 강황소대간세포유명현적보호작용,주요표현재제고세포HO-1적활성급표체수평.
Objective To investigate the role of heme oxygenase-1(HO-1)in the protective actions of curcumin against ethanol-induced oxidative damage.Methods Microsomal HO-1 enzyme activities were determined in rat primary hepatocytes pretreated by curcumin.AST,LDH release and hepatic oxidative/antioxidant status were measured with or without ZnPPⅨ/Hemin as a classic HO-1 inhibitor/inducer,respectively.Results Curcumin could induce the HO-1 expression and enzyme activity,which was correlated with antioxidant levels in hepatocytes.HO-1 induction reached a peak under administration of 15 μmol/L curcumin for 1 h.Conclusion HO-1 induction by curcumin is contributed to the heptoprotective effects against ethanol-induced oxidative damage.