中国循证心血管医学杂志
中國循證心血管醫學雜誌
중국순증심혈관의학잡지
CHINESE JOURNAL OF EVIDENCE-BASES CARDIOVASCULAR MEDICINE
2015年
4期
444-447
,共4页
汪艳丽%刘如秀%刘宇%李泱%刘金凤
汪豔麗%劉如秀%劉宇%李泱%劉金鳳
왕염려%류여수%류우%리앙%류금봉
强心复脉方%含药血清%窦房结细胞%膜片钳%动作电位%乳鼠
彊心複脈方%含藥血清%竇房結細胞%膜片鉗%動作電位%乳鼠
강심복맥방%함약혈청%두방결세포%막편겸%동작전위%유서
Qiangxin Fumai Fang%Medicated serum%Sino-atrial node cells%Patch clamp%Action potential%Neonatal rats
目的:研究强心复脉方含药血清对乳鼠受损窦房结细胞动作电位的影响。方法分离培养Wistar乳鼠窦房结细胞,分为6组:正常组、模型组、100μl含药血清组、200μl含药血清组、300μl含药血清组、空白血清组。除正常组外,其余各组均模拟缺血-再灌注制备细胞损伤模型。采用膜片钳技术在电流钳模式下记录各组细胞自发性动作电位,测量各组细胞复极至20%、50%、90%动作电位时程(APD20、APD50、APD90)、最大舒张电位(MDP)及动作电位幅值(APA)。结果于造模后细胞外液分别加入100μl、200μl、300μl强心复脉方含药血清,与模型组比较,100μl含药血清组、200μl含药血清组、300μl含药血清组APD20缩短,分别为[(77.2±5.5)ms vs.(35.7±7.1)ms]、[(77.2±5.5) ms vs.(50.1±7.5)ms]、[(77.2±5.5)ms vs.(39.7±4.3)ms],差别均具有统计学意义(P均<0.01);APD50缩短,分别为[(147.5±5.1)ms vs.(90.6±5.8)ms]、[(147.5±5.1)ms vs.(111.0±4.1)ms]、[(147.5±5.1)ms vs.(109.0±2.4)ms],差别均具有统计学意义(P均<0.05)。与正常组比较,经缺血-再灌注造模后(模型组)细胞的MDP上升,APA减小,为[(-61.9±5.4)mV vs.(-54.5±4.6)mV],[(84.7±5.0)mV vs.(71.4±4.7)mV],差异均具有显著性统计学意义(P均<0.01)。于造模后细胞外液分别加入100μl、200μl、300μl强心复脉方含药血清,与模型组比较,各组MDP值无明显改变,无统计学意义(P均>0.05)。100μl含药血清组和300μl含药血清组APA均较模型组增大,分别为[(83.2±5.9)mV vs.(71.4±4.7)mV]和[(82.2±6.4)mV vs.(71.4±4.7)mV],差异均具有显著统计学意义(P均<0.01)。结论强心复脉方含药血清能缩短乳鼠受损窦房结细胞动作电位的APD20、APD50,增大APA,缩短动作电位时程,进而加快细胞自发性搏动频率。
目的:研究彊心複脈方含藥血清對乳鼠受損竇房結細胞動作電位的影響。方法分離培養Wistar乳鼠竇房結細胞,分為6組:正常組、模型組、100μl含藥血清組、200μl含藥血清組、300μl含藥血清組、空白血清組。除正常組外,其餘各組均模擬缺血-再灌註製備細胞損傷模型。採用膜片鉗技術在電流鉗模式下記錄各組細胞自髮性動作電位,測量各組細胞複極至20%、50%、90%動作電位時程(APD20、APD50、APD90)、最大舒張電位(MDP)及動作電位幅值(APA)。結果于造模後細胞外液分彆加入100μl、200μl、300μl彊心複脈方含藥血清,與模型組比較,100μl含藥血清組、200μl含藥血清組、300μl含藥血清組APD20縮短,分彆為[(77.2±5.5)ms vs.(35.7±7.1)ms]、[(77.2±5.5) ms vs.(50.1±7.5)ms]、[(77.2±5.5)ms vs.(39.7±4.3)ms],差彆均具有統計學意義(P均<0.01);APD50縮短,分彆為[(147.5±5.1)ms vs.(90.6±5.8)ms]、[(147.5±5.1)ms vs.(111.0±4.1)ms]、[(147.5±5.1)ms vs.(109.0±2.4)ms],差彆均具有統計學意義(P均<0.05)。與正常組比較,經缺血-再灌註造模後(模型組)細胞的MDP上升,APA減小,為[(-61.9±5.4)mV vs.(-54.5±4.6)mV],[(84.7±5.0)mV vs.(71.4±4.7)mV],差異均具有顯著性統計學意義(P均<0.01)。于造模後細胞外液分彆加入100μl、200μl、300μl彊心複脈方含藥血清,與模型組比較,各組MDP值無明顯改變,無統計學意義(P均>0.05)。100μl含藥血清組和300μl含藥血清組APA均較模型組增大,分彆為[(83.2±5.9)mV vs.(71.4±4.7)mV]和[(82.2±6.4)mV vs.(71.4±4.7)mV],差異均具有顯著統計學意義(P均<0.01)。結論彊心複脈方含藥血清能縮短乳鼠受損竇房結細胞動作電位的APD20、APD50,增大APA,縮短動作電位時程,進而加快細胞自髮性搏動頻率。
목적:연구강심복맥방함약혈청대유서수손두방결세포동작전위적영향。방법분리배양Wistar유서두방결세포,분위6조:정상조、모형조、100μl함약혈청조、200μl함약혈청조、300μl함약혈청조、공백혈청조。제정상조외,기여각조균모의결혈-재관주제비세포손상모형。채용막편겸기술재전류겸모식하기록각조세포자발성동작전위,측량각조세포복겁지20%、50%、90%동작전위시정(APD20、APD50、APD90)、최대서장전위(MDP)급동작전위폭치(APA)。결과우조모후세포외액분별가입100μl、200μl、300μl강심복맥방함약혈청,여모형조비교,100μl함약혈청조、200μl함약혈청조、300μl함약혈청조APD20축단,분별위[(77.2±5.5)ms vs.(35.7±7.1)ms]、[(77.2±5.5) ms vs.(50.1±7.5)ms]、[(77.2±5.5)ms vs.(39.7±4.3)ms],차별균구유통계학의의(P균<0.01);APD50축단,분별위[(147.5±5.1)ms vs.(90.6±5.8)ms]、[(147.5±5.1)ms vs.(111.0±4.1)ms]、[(147.5±5.1)ms vs.(109.0±2.4)ms],차별균구유통계학의의(P균<0.05)。여정상조비교,경결혈-재관주조모후(모형조)세포적MDP상승,APA감소,위[(-61.9±5.4)mV vs.(-54.5±4.6)mV],[(84.7±5.0)mV vs.(71.4±4.7)mV],차이균구유현저성통계학의의(P균<0.01)。우조모후세포외액분별가입100μl、200μl、300μl강심복맥방함약혈청,여모형조비교,각조MDP치무명현개변,무통계학의의(P균>0.05)。100μl함약혈청조화300μl함약혈청조APA균교모형조증대,분별위[(83.2±5.9)mV vs.(71.4±4.7)mV]화[(82.2±6.4)mV vs.(71.4±4.7)mV],차이균구유현저통계학의의(P균<0.01)。결론강심복맥방함약혈청능축단유서수손두방결세포동작전위적APD20、APD50,증대APA,축단동작전위시정,진이가쾌세포자발성박동빈솔。
Objective To study the influence of medicated serum of Qiangxin Fumai Fang on action potential of injured sino-atrial node cells (SNC) in neonatal rats. Methods SNC were isolated in Wistar neonatal rats and divided into 6 groups including normal group (group 1), model group (group 2), 100 l medicated serum group (group 3), 200 l medicated serum group (group 4), 300 l medicated serum group (group 5) and blank serum group (group 6). Except of group 1, other groups were given simulating ischemia-reperfusion (I-R) for establishing cell injury model. The cell spontaneous action potential was recorded by using patch clamp technique under current clamp mode in all groups. The durations from repolarization to 20%action potential (APD20), 50%action potential (APD50) and 90%action potential (APD90), the maximal diastolic potential (MDP), and action potential amplitude (APA) were detected in all groups. Results Compared with group 2, APD20 was shortened in group 3, group 4 and group 5 [(77.2 ±5.5) ms vs. (35.7±7.1) ms], [(77.2±5.5) ms vs. (50.1±7.5) ms], [(77.2±5.5) ms vs. (39.7±4.3) ms, all P<0.01], and APD50 was shortened in group 3, group 4 and group 5 [(147.5±5.1) ms vs. (90.6±5.8) ms], [(147.5±5.1) ms vs. (111.0±4.1) ms], [(147.5±5.1) ms vs. (109.0±2.4) ms, all P<0.05]. Compared with group 1, MDP increased and APA decreased in group 2 [(-61.9±5.4) mV vs. (-54.5±4.6) mV], [(84.7±5.0) mV vs. (71.4±4.7) mV, all P<0.01]. Compared with group 2, MDP had no significant changes in group 3, group 4 and group 5 (all P>0.05). APA increased in group 3 and group 5 compared with group 2 [(83.2±5.9) mV vs. (71.4±4.7) mV], [(82.2±6.4) mV vs. (71.4±4.7) mV, all P<0.01]. Conclusion The medicated serum of Qiangxin Fumai Fang can shorten APD20 and APD50 of action potential of injured SNC, increased APA, shorten duration of action potential, and improve frequency of spontaneous beat in neonatal rats.