中国循环杂志
中國循環雜誌
중국순배잡지
CHINESE CIRCULATION JOURNAL
2015年
6期
562-566
,共5页
心血管病学%心房颤动%心房成纤维细胞%转化生长因子-β1%Smads蛋白%阿托伐他汀
心血管病學%心房顫動%心房成纖維細胞%轉化生長因子-β1%Smads蛋白%阿託伐他汀
심혈관병학%심방전동%심방성섬유세포%전화생장인자-β1%Smads단백%아탁벌타정
Cardiology%Atrial ifbrillation%Myocardial ifbroblast%Transforming growth factor-β1%Smads protein%Atorvastatin
目的::通过转化生长因子-β1(TGF-β1)和阿托伐他汀对培养的人心房成纤维细胞进行干预,观察其Ⅰ型胶原, Smad2、Smad4和Smad7 mRNA及蛋白表达的变化,探讨心房纤维化和抗纤维化机制。方法:通过心外科手术获得患者右心耳组织,并培养出人心房成纤维细胞;将细胞传代培养,应用四唑盐比色(MTT)法检测不同浓度(0、0.1、1.0、5.0、10.0、20.0、50.0 ng/ml)TGF-β1和不同浓度(0、0.1、1.0、10.0、100.0μmol/L)阿托伐他汀对心房成纤维细胞生长影响;应用逆转录—聚合酶链反应(RT-PCR)和蛋白免疫印迹杂交(Western blot)技术检测10.0 ng/ml TGF-β1、10.0μmol/L阿托伐他汀以及10.0 ng/ml TGF-β1+10.0μmol/L阿托伐他汀联合对心房成纤维细胞中Ⅰ型胶原,P-Smad2,Smad4和Smad7 mRNA和蛋白表达的变化。结果: MTT法检测示:与对照(0 ng/ml)比,1.0 ng/ml 和10.0 ng/ml TGF-β1干预使心房成纤维细胞Ⅰ型胶原、P-Smad2、Smad4的mRNA和蛋白表达水平增高(P<0.05),而Smad7的mRNA和蛋白表达水平减低(P<0.05),差异均有统计学意义;与10.0 ng/ml TGF-β1相比,TGF-β1加用或单用阿托伐他汀(10.0μmol/L)心房成纤维细胞Ⅰ型胶原、P-Smad2、Smad4的mRNA和蛋白表达水平减低(P<0.05),而Smad7 mRNA和蛋白表达水平增高(P<0.05),差异均有统计学意义。结论: TGF-β1促进心房成纤维细胞增殖和Ⅰ型胶原表达,阿托伐他汀抑制其增殖和Ⅰ型胶原表达,可能是通过影响TGF-β1/Smads途径起作用。
目的::通過轉化生長因子-β1(TGF-β1)和阿託伐他汀對培養的人心房成纖維細胞進行榦預,觀察其Ⅰ型膠原, Smad2、Smad4和Smad7 mRNA及蛋白錶達的變化,探討心房纖維化和抗纖維化機製。方法:通過心外科手術穫得患者右心耳組織,併培養齣人心房成纖維細胞;將細胞傳代培養,應用四唑鹽比色(MTT)法檢測不同濃度(0、0.1、1.0、5.0、10.0、20.0、50.0 ng/ml)TGF-β1和不同濃度(0、0.1、1.0、10.0、100.0μmol/L)阿託伐他汀對心房成纖維細胞生長影響;應用逆轉錄—聚閤酶鏈反應(RT-PCR)和蛋白免疫印跡雜交(Western blot)技術檢測10.0 ng/ml TGF-β1、10.0μmol/L阿託伐他汀以及10.0 ng/ml TGF-β1+10.0μmol/L阿託伐他汀聯閤對心房成纖維細胞中Ⅰ型膠原,P-Smad2,Smad4和Smad7 mRNA和蛋白錶達的變化。結果: MTT法檢測示:與對照(0 ng/ml)比,1.0 ng/ml 和10.0 ng/ml TGF-β1榦預使心房成纖維細胞Ⅰ型膠原、P-Smad2、Smad4的mRNA和蛋白錶達水平增高(P<0.05),而Smad7的mRNA和蛋白錶達水平減低(P<0.05),差異均有統計學意義;與10.0 ng/ml TGF-β1相比,TGF-β1加用或單用阿託伐他汀(10.0μmol/L)心房成纖維細胞Ⅰ型膠原、P-Smad2、Smad4的mRNA和蛋白錶達水平減低(P<0.05),而Smad7 mRNA和蛋白錶達水平增高(P<0.05),差異均有統計學意義。結論: TGF-β1促進心房成纖維細胞增殖和Ⅰ型膠原錶達,阿託伐他汀抑製其增殖和Ⅰ型膠原錶達,可能是通過影響TGF-β1/Smads途徑起作用。
목적::통과전화생장인자-β1(TGF-β1)화아탁벌타정대배양적인심방성섬유세포진행간예,관찰기Ⅰ형효원, Smad2、Smad4화Smad7 mRNA급단백표체적변화,탐토심방섬유화화항섬유화궤제。방법:통과심외과수술획득환자우심이조직,병배양출인심방성섬유세포;장세포전대배양,응용사서염비색(MTT)법검측불동농도(0、0.1、1.0、5.0、10.0、20.0、50.0 ng/ml)TGF-β1화불동농도(0、0.1、1.0、10.0、100.0μmol/L)아탁벌타정대심방성섬유세포생장영향;응용역전록—취합매련반응(RT-PCR)화단백면역인적잡교(Western blot)기술검측10.0 ng/ml TGF-β1、10.0μmol/L아탁벌타정이급10.0 ng/ml TGF-β1+10.0μmol/L아탁벌타정연합대심방성섬유세포중Ⅰ형효원,P-Smad2,Smad4화Smad7 mRNA화단백표체적변화。결과: MTT법검측시:여대조(0 ng/ml)비,1.0 ng/ml 화10.0 ng/ml TGF-β1간예사심방성섬유세포Ⅰ형효원、P-Smad2、Smad4적mRNA화단백표체수평증고(P<0.05),이Smad7적mRNA화단백표체수평감저(P<0.05),차이균유통계학의의;여10.0 ng/ml TGF-β1상비,TGF-β1가용혹단용아탁벌타정(10.0μmol/L)심방성섬유세포Ⅰ형효원、P-Smad2、Smad4적mRNA화단백표체수평감저(P<0.05),이Smad7 mRNA화단백표체수평증고(P<0.05),차이균유통계학의의。결론: TGF-β1촉진심방성섬유세포증식화Ⅰ형효원표체,아탁벌타정억제기증식화Ⅰ형효원표체,가능시통과영향TGF-β1/Smads도경기작용。
Objective: To observe the effects of transforming growth factor-β1 (TGF-β1) and atorvastatin on expressions of collagen type I P-Smad2, Smad4 and Smad7 in human atrial ifbroblasts, and to explore the ifbrosis and anti-ifbrosis mechanisms in human atrium. Methods: Human right atrial appendage tissue was obtained from the cardiac surgery in our hospital and the atrial ifbroblasts were isolated and cultured by generations. The effects of TGF-β1 and atorvastatin on atrial ifbroblast proliferation was detected by MTT method and the effect of TGF-β1 at (0, 0.1, 1.0, 5.0, 10.0, 20.0, 50.0) ng/ml and atorvastatin at (0, 0.1, 1.0, 10.0, 100.0) μmol/L on mRNA and protein expressions of collagen type I P-Smad2, Smad4 and Smad7 in atrial ifbroblasts were examined by RT-PCR and Western-blotting analysis respectively. Results: MTT detection presented that compared to TGF-β1 at 0 ng/ml, with the intervention of TGF-β1 at (1 and 10) ng/ml, the mRNA and protein expressions of collagen type I P-Smad2, Smad4 increased,P<0.05 and the expressions of Smad7 decreased,P<0.05. Compared to TGF-β1 at 10.0 ng/ml, with the intervention of TGF-β1 + atorvastatin at 10.0 μmol/L or with atorvastatin at 10.0 μmol/L alone, the mRNA and protein expressions of collagen type I P-Smad2, Smad4 decreased,P<0.05and expressions of Smad7 increased,P<0.05. Conclusion: TGF-β1 promotes human atrial ifbroblast proliferation and collagen type I expression, while atorvastatin inhibits such proliferation and expression, the effect might be done by affecting TGF-β1/Smads pathway in human atrial ifbroblasts.