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电针刺足三里穴对脓毒症大鼠心脏损害机制的研究 被引量:4

Effect of electro-acupuncture at Zusanli point on the injury of the heart function in sepsis rats
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摘要 目的探讨电针足三里穴对脓毒症大鼠心脏功能和结构的影响及机制。方法将24只SD成年大鼠随机分为假手术组+电针非经非穴组(N+SEA),假手术+电针足三里组(N+EA),脓毒症+电针足三里组(CLP+EA),脓毒症+电针非经非穴组(CLP+SEA),共4组(n=6)。采用盲肠结扎穿孔术(CLP)法制备大鼠脓毒症模型。N+EA组和CLP+EA组电针足三里穴,N+SEA组和CLP+SEA组电针非经非穴。6h后,摘除心脏固定于Langendorff灌流装置;置入左心导管,测定大鼠心脏左室舒张末压(LVEDP)、左心室收缩末期压力(LVSP),左室压最大上升速率(dp/dtmax)、心脏输出量(co)和心率(HR)。最后取心脏组织行免疫组织化学和实时定量聚合酶链反应(Real-timePCR)检测基质金属蛋白酶(MMP)-2、MMP-9及金属蛋白酶组织抑制因子(TIMP)-1、TINP-2的表达。结果CLP+SEA组LVEDP[(5.2±0.9)mmHg(1mmHg=0.133kPa)]、LVSP[(95.2±9.3)mmHg],ap/dtmax[(1804±122)mmHg/s]、CO[(26.6±4.O)ml/min]和HR[(237±15)bpm],均较N+SEA组LVEDP[(9.9±1.6)mimHg]、LVSP[(127.8±8.7)mmHg],ap/dtmax[(2484±98)mmHg/s]、CO[(43.10±5.30)ml/min]和HR[(310±12)bpm],N+EA组LVEDP[(9.6±1.7)thinHg]、LVSP[(128.3±9.9)mmHg],dp/dtmax[(2536±107)nllnHg/s]、CO(45.9±5.7)ml/min和HR(312±15)bpm,明显降低(P〈0.01),而CLP+EA组LVEDP[(7.9±0.9)mmHg]、LVSP[(112.0±11.9)mmHg],dp/dtmax[(2270±152)mm Hg/s]、CO[(35.6±5.1)ml/min]和HR[(280±24)bpm],较CLP+SEA组明显改善(P〈0.01),在免疫组织化学检测中可见CLP+SEA组MNP-2、NNP-9及TINP-1、TIMP-2的表达明显增强,而CLP+EA组MMP-2、MMP-9及TIMP-1、TIMP-2的表达则在一定程度上减弱。在mRNA水平上,CLP+SEA组MMP-2(1.47±0.06)、MMP-9(1.59±0.04)、TIMP-2(1.21±0.03)、TIMP-1(1.24±0.04)的mRNA表达明显增加(P〈0.01),而CLP+EA组中MMP-2(1.30±0.09)、MMP-9(1.38±0.05)、TIMP-2(1.35±0.07)、TIMP-1(1.42±0.07)的表达较CLP+SEA组均有不同程度的下降(P〈0.05)。结论电针刺足三里可减轻脓毒症大鼠心肌受损,改善血流动力学指标,其机制可能是电针刺足三里穴抑制了NMP-2和NMP-9的表达,改善两者与其特异性抑制剂表达的失衡,并同时激活了胆碱能抗炎通路。 Objective To discuss the effect of electro-acupuncturing at Zusanli point of the heart function and the structure of the rats with sepsis and the mechanism. Methods Twenty-four SD rats were randomly into four groups : N + SEA group, N + EA group, CI..P + EA group, CLP + SEA group ( n = 6 each). The cecum ligation perforation technique (CLP) was used to prepare rat model of sepsis. In N + EA group and CLP + EA group, the rats were given electroacupuncture Zusanli point. In N + SEA group and CLP + SEA group the rats were given electroacupuncture at the point far from the Zusanli point. After 6 h the heart were quickly removed and fixed in Langendorff perfusion device. The left cardiac catheterization from pulmonary vein was done, and the left ventricular end-diastolic pressure (LVEDP), left ventricular end sys- tolic pressure (LVSP), left ventricular pressure maximum rising rate (dp/dt max), cardiac output (CO)and heart rate (HR) were determined. The heart tissue was taken for detection of the expression of matrix metalloproteinase (MMP) -2, MMP-9 and tissue inhibitor of metaJloproteinase (TIMP) -1, TIMP-2 by u- sing immunohistochemical staining and real time quantitative polymerase chain reaction (Real-time PCR). Results In CLP + SEA group, LVEDP [ (5.2 ±0. 9) mm Hg ( 1 mm Hg =0. 133 kPa) ], LVSP [ (95. 2± 9.3) mm Hg], dp/dt max [(1804±122) mm Hg/s], CO [(26.6±4.0) ml/min] and HR [(237 ± 15)/mini were decreased obviously as compared with N +EA group [ LVEDP (9. 9±1.6) mm Hg, LVSP (127. 8 ±8.7) mm Hg, dp/dt max (2484 ±98) mm Hg/s, CO (43. 1 ± 5. 30) ml/min and HR (310 ± 12)/min] and N + EA group [ LVEDP (9.6±1.7) mm Hg, LVSP ( 128.3± 9. 9) mm Hg, dp/dt max (2536±107) mmHg/s, CO (45.9±5.7) ml/minand HR (312±15)/min] (P〈0.01 for all). As compared with CLP + SEA group, LVEDP [ (7.9 ±0. 9) mm Hg], LVSP [ ( 112. 0 ±11.9) mm Hg], dp/dt max [ (2270 ± 152) mm Hg/s], CO I (35.6 ±5.1 ) ml/min], HR [ (280 ±24)/mini in CLP + EA gourp were increased obviously (P 〈0. 01 ). In CLP + SEA group, the expression of MMP-2, MMP-9, TIMP-1 and TIMP-2 was strengthened obviously, while that was weakened in CLP + SEA group. The mRNA expression of MMP-2 ( 1.47±0. 06), MMP-9 ( 1.59 ± 0. 04), TIMP-2 ( 1.21 ± 0. 03 ) and TIMP-1 ( 1.24± 0. 04) was increased in CLP + SEA group, while that of MMP-2 ( 1.30 ± 0. 09 ), MMP-9 ( 1.38 ±0. 05 ), TIMP-2 ( 1.35 ±0. 07) and TIMP-1 ( 1.42± 0. 07 ) in CLP + EA group was reduced to varying degrees (P 〈 0.05 ). Conclusion Electro-aeupuneturing at Zusanli point can ease the injury of heart in rats with sepsis, improve the hemodynamies, which might be related to the fact that the electric acupunc- ture inhibits the expression of MMP-2 and MMP-9, improving the imbalance of them to their specific inhibi- tots, and at the same time activating the cholinergic anti-inflammatory pathway.
出处 《中华实验外科杂志》 CAS CSCD 北大核心 2013年第8期1564-1567,共4页 Chinese Journal of Experimental Surgery
基金 国家自然科学基金资助项目(30972852) 武汉市科技委员会基金资助项目(wxl2e12)
关键词 脓毒血症 足三里 基质金属蛋白酶 胆碱能抗炎通路 epsis Zusanli matrix metalloproteinases Matrix metalloproteinase Cholinergie anti-inflammatory pathway
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