中国循环杂志
中國循環雜誌
중국순배잡지
CHINESE CIRCULATION JOURNAL
2015年
2期
176-181
,共6页
苏强%李浪%周游%王江友
囌彊%李浪%週遊%王江友
소강%리랑%주유%왕강우
冠状动脉微栓塞%血管内介入%心功能%程序性细胞死亡因子4
冠狀動脈微栓塞%血管內介入%心功能%程序性細胞死亡因子4
관상동맥미전새%혈관내개입%심공능%정서성세포사망인자4
Coronary micro embolism%Percutaneous coronary intervention%Cardiac function%Programmed cell death 4
目的:探讨巴马系小型猪冠状动脉(冠脉)微栓塞(CME)致心功能损伤与程序性细胞死亡因子4(PDCD4)表达的动态变化及关系。
<br> 方法:60头巴马系小型猪经微导管左前降支注入微栓塞球构建冠脉微栓塞组;注射生理盐水构建假手术组,每组小型猪均为30只。每组小型猪随机分为0h、3h、6h、9h、12h、24h六个不同时间点观察(每个时间点小型猪均为5头)。应用心脏超声心动图检测心功能指标;组织病理切片苏木素-伊红(HE)染色和苏木素碱性复红苦味酸(HBFP)染色进行梗死区域测量;荧光定量多聚酶链反应(PCR)检测心肌组织PDCD4与肿瘤坏死因子-α(TNF-α)mRNA表达;蛋白免疫印迹法(Western blot)检测心肌组织PDCD4与TNF-α蛋白表达。
<br> 结果:超声心动图参数显示,冠脉微栓塞组除0 h、24 h外其余时间点左心室射血分数(LVEF)均较假手术组明显降低(P<0.05),伴随着LVEF显著下降,心脏超声心动图表现为左心室短轴缩短率(LVFS)和心排血量(CO)下降及左心室舒张末期内径(LVEDd)增加。病理学显示,冠脉微栓塞组3 h、6 h、9 h、12 h、24 h五个时间点均可见微梗死灶,但各时间点之间的微梗死面积比较差异无统计学意义(P>0.05)。荧光定量PCR结果显示,冠脉微栓塞组心肌组织PDCD4与TNF-αmRNA表达都是在3 h开始升高,9 h达高峰,12 h和24 h下降(P<0.05);与假手术组比较,冠脉微栓塞组除0 h外其他时间点心肌组织PDCD4与TNF-αmRNA的表达量均显著增加(均P<0.05)。蛋白免疫印迹结果显示,冠脉微栓塞组心肌组织PDCD4与TNF-α的蛋白表达都是在3 h开始升高,9 h达高峰,12 h和24 h下降(P<0.05);与假手术组比较,冠脉微栓塞组除0 h外其他时间点心肌组织PDCD4与TNF-α蛋白表达水平均显著增加(P均<0.05),差异均有统计学意义。
<br> 结论:PDCD4参与了冠脉微栓塞致心功能的损伤,并呈现出明显的时间变化规律,可能是通过调控心肌TNF-α的表达实现。
目的:探討巴馬繫小型豬冠狀動脈(冠脈)微栓塞(CME)緻心功能損傷與程序性細胞死亡因子4(PDCD4)錶達的動態變化及關繫。
<br> 方法:60頭巴馬繫小型豬經微導管左前降支註入微栓塞毬構建冠脈微栓塞組;註射生理鹽水構建假手術組,每組小型豬均為30隻。每組小型豬隨機分為0h、3h、6h、9h、12h、24h六箇不同時間點觀察(每箇時間點小型豬均為5頭)。應用心髒超聲心動圖檢測心功能指標;組織病理切片囌木素-伊紅(HE)染色和囌木素堿性複紅苦味痠(HBFP)染色進行梗死區域測量;熒光定量多聚酶鏈反應(PCR)檢測心肌組織PDCD4與腫瘤壞死因子-α(TNF-α)mRNA錶達;蛋白免疫印跡法(Western blot)檢測心肌組織PDCD4與TNF-α蛋白錶達。
<br> 結果:超聲心動圖參數顯示,冠脈微栓塞組除0 h、24 h外其餘時間點左心室射血分數(LVEF)均較假手術組明顯降低(P<0.05),伴隨著LVEF顯著下降,心髒超聲心動圖錶現為左心室短軸縮短率(LVFS)和心排血量(CO)下降及左心室舒張末期內徑(LVEDd)增加。病理學顯示,冠脈微栓塞組3 h、6 h、9 h、12 h、24 h五箇時間點均可見微梗死竈,但各時間點之間的微梗死麵積比較差異無統計學意義(P>0.05)。熒光定量PCR結果顯示,冠脈微栓塞組心肌組織PDCD4與TNF-αmRNA錶達都是在3 h開始升高,9 h達高峰,12 h和24 h下降(P<0.05);與假手術組比較,冠脈微栓塞組除0 h外其他時間點心肌組織PDCD4與TNF-αmRNA的錶達量均顯著增加(均P<0.05)。蛋白免疫印跡結果顯示,冠脈微栓塞組心肌組織PDCD4與TNF-α的蛋白錶達都是在3 h開始升高,9 h達高峰,12 h和24 h下降(P<0.05);與假手術組比較,冠脈微栓塞組除0 h外其他時間點心肌組織PDCD4與TNF-α蛋白錶達水平均顯著增加(P均<0.05),差異均有統計學意義。
<br> 結論:PDCD4參與瞭冠脈微栓塞緻心功能的損傷,併呈現齣明顯的時間變化規律,可能是通過調控心肌TNF-α的錶達實現。
목적:탐토파마계소형저관상동맥(관맥)미전새(CME)치심공능손상여정서성세포사망인자4(PDCD4)표체적동태변화급관계。
<br> 방법:60두파마계소형저경미도관좌전강지주입미전새구구건관맥미전새조;주사생리염수구건가수술조,매조소형저균위30지。매조소형저수궤분위0h、3h、6h、9h、12h、24h륙개불동시간점관찰(매개시간점소형저균위5두)。응용심장초성심동도검측심공능지표;조직병리절편소목소-이홍(HE)염색화소목소감성복홍고미산(HBFP)염색진행경사구역측량;형광정량다취매련반응(PCR)검측심기조직PDCD4여종류배사인자-α(TNF-α)mRNA표체;단백면역인적법(Western blot)검측심기조직PDCD4여TNF-α단백표체。
<br> 결과:초성심동도삼수현시,관맥미전새조제0 h、24 h외기여시간점좌심실사혈분수(LVEF)균교가수술조명현강저(P<0.05),반수착LVEF현저하강,심장초성심동도표현위좌심실단축축단솔(LVFS)화심배혈량(CO)하강급좌심실서장말기내경(LVEDd)증가。병이학현시,관맥미전새조3 h、6 h、9 h、12 h、24 h오개시간점균가견미경사조,단각시간점지간적미경사면적비교차이무통계학의의(P>0.05)。형광정량PCR결과현시,관맥미전새조심기조직PDCD4여TNF-αmRNA표체도시재3 h개시승고,9 h체고봉,12 h화24 h하강(P<0.05);여가수술조비교,관맥미전새조제0 h외기타시간점심기조직PDCD4여TNF-αmRNA적표체량균현저증가(균P<0.05)。단백면역인적결과현시,관맥미전새조심기조직PDCD4여TNF-α적단백표체도시재3 h개시승고,9 h체고봉,12 h화24 h하강(P<0.05);여가수술조비교,관맥미전새조제0 h외기타시간점심기조직PDCD4여TNF-α단백표체수평균현저증가(P균<0.05),차이균유통계학의의。
<br> 결론:PDCD4삼여료관맥미전새치심공능적손상,병정현출명현적시간변화규률,가능시통과조공심기TNF-α적표체실현。
Objective: To explore the relationship between coronary micro embolism (CME) incurred myocardial dysfunction and dynamic changes of a programmed cell death 4 (PDCD4) expression in experimental pigs.
<br> Methods: A total of 60 Bema miniature pigs were randomly divided into 2 groups: CME group, the animal model was established by injecting polyethylene microspheres into pigs’ left anterior descending artery (LAD) and Sham group, the animals received normal saline injection in LAD. n=30 in each group. Each group was further divided into 5 time points as 0h, 3h, 6h, 9h, 12h and 24h to observe the relevant indexes, n=5 in each time point. The myocardial function was detected by echocardiography, the area of infarction was examined by HIM and HBFP
<br> staining, the expressions of mRNA and protein of myocardial PDCD4 and TNF-α were measured by RT-PCR and Western blot analysis at different time points in each group.
<br> Results: ① Compared with Sham group, CME group presented decreased LVEF at each time point except for 0h, P<0.05, and with LVEF decreasing, the FS and CO reduced, while LVEDD increased accordingly. ② In CME group, the micro infraction could be found at 3h, 6h, 9h, 12h and 24h time points, and the areas of infarction were similar among different time points, P>0.05. ③In CME group, the mRNA expression of PDCD4 and TNF-αincreased at 3h time point, reached the maximum at 9h and decreased at 12h and 24h time points, P<0.05. Compared with Sham group, CME group had increased mRNA expression of PDCD4 and TNF-α at each point except for 0h, all P<0.05. ④In CME group, the protein expression of PDCD4 and TNF-α increased at 3h time point, reached the maximum at 9h and decreased at 12h and 24h time points, P<0.05. Compared with Sham group, CME group had increased protein expression of PDCD4 and TNF-αat each point except for 0h, all P<0.05.
<br> Conclusion: PDCD4 was involved in CME incurred myocardial dysfunction as time changing in experimental pigs, and this might be carried out by regulating myocardial TNF-αexpression.