电针大鼠足三里穴对胃缺血再灌注过程中血流及胃电的影响

目的通过电针刺激胃缺血再灌注大鼠足三里穴,观察电针对缺血再灌注状态下胃血流和功能的影响。方法采用胃缺血再灌注组（对照组）与电针刺激病理模型组,使用激光多普勒血流仪和多导生理记录仪观察记录电针足三里穴时缺血再灌注状态下胃血流和胃电快波。结果在阻断血流过程中电针组血流量的减少小于对照组,25min时与对照组比较差异有统计学意义（P〈0.05）;松解过程中电针组血流量的增加大于对照组;电针组胃电幅度在缺血状态下与再灌注状态比较显著升高（P〈0.05）;对照组胃电快波频率在阻断血流状态下比正常状态有显著性差异（P〈0.05）,电针组胃电快波频率在松解状态与正常状态相比差异有统计学意义（P〈0.05）。结论电针刺激足三里穴在胃缺血再灌注过程中对血流的变化是在不同状态下均是增加血流量的作用;对胃电运动的影响在机体不同状态下、胃当时的机能状态等都具有相关性,总体上对胃电活动是抑制的作用。     

电针对胃缺血再灌注影响的激光血流成像方法研究

目的:观察电针对胃血流灌注的影响,寻找反映胃血流变化的研究方法。方法:在建立一种新的结扎大鼠胃右动脉而形成胃缺血再灌注模型的基础上,电针"足三里"穴,采用激光多普勒血流灌注成像仪(LDPI)对胃血流灌注图像予以显示,分析电针对胃血流灌注的作用。结果:①新的胃缺血再灌注模型显像清晰。电针组在缺血30 min内,缺血程度较对照组为轻;再灌注后血流的恢复效果也优于对照组。②在结扎25 min时,电针组血流量的变化均值为(-0.50±0.18)PU,与对照组(-0.90±0.16)PU比较,差异有显著性意义(P<0.05)。结论:电针可改善并促进缺血再灌注胃的血流供应;结扎和松解胃右动脉而形成的胃缺血和再灌注模型可以用于针灸研究中。     

电针大鼠足三里穴对胃缺血再灌注过程中胃组织E选择素表达的影响

目的:通过电针刺激胃缺血再灌注大鼠足三里穴,观察电针对缺血再灌注状态胃组织中E选择素表达的影响。方法:采用正常组、胃缺血再灌注组(对照组)和电针刺激病理模型组,使用免疫组化方法分别观察电针足三里穴前后3组胃组织中E选择素的表达。结果:(1)对照组大鼠胃组织,E选择素表达面积较正常组大鼠的有显著升高(P<0.01);(2)电针组大鼠胃组织,E选择素表达面积较对照组的均有所降低,但是没有统计学差异;(3)电针组胃组织,E选择素表达面积与正常组比较有显著差异(P<0.01)。结论:电针刺激足三里穴在胃缺血再灌注过程中对胃黏膜组织的微血管和毛细血管内皮细胞的E选择素表达有减少的趋势。     

中枢P物质参与电针对家兔胃运动,胃电的抑制效应

实验采用霍尔效应慢性记录家兔运动的方法,同时记录胃电。家兔在自由进食和饮水后、清醒安静状态下,电针“足三里”穴对胃运动和胃电慢波的影响主要表现为频率下降、波幅降低的抑制效应。侧脑室注入Ｐ物质后,家兔胃运动和胃电慢波频率下降、波幅降低。注入Ｐ物质后再Ｐ物质后再给予电针、,能增强电针对胃运动和胃电的抑制效应。侧脑这主Ｐ物质拮抗剂ＤＡＤＴＬ,对家兔胃运动和胃电慢波均无影响,注入ＤＡＤＴＬ后再电针,看到Ｄ     

健脾益气和胃法防治大鼠胃缺血再灌注损伤的实验研究

目的:探讨大鼠胃缺血后再灌注胃粘膜损伤与氧自由基脂质过氧化的相关性及以健脾益气和胃法防治其胃粘膜损伤的细胞保护作用机制。方法:采用腹腔动脉结扎法,造成胃缺血20min,解除结扎,再灌注60min 后,取出胃粘膜,观察正常对照组、病理模型组和用药各组中胃粘膜之氧自由基脂质过氧化物及清除酶系诸指标的变化。结果:大鼠胃缺血后再灌注,胃粘膜脂质过氧化物(LPO)含量比正常对照组明显增加,超氧化物歧化酶(SOD)、非蛋白巯基(NPSH)、谷胱甘肽过氧化物酶(GSH-Px)含量则明显降低(P<0.01);术前口服健脾益气和胃中药各组胃粘膜 LPO 含量明显低于病理组,SOD、NPSH、GSH-Px 水平则明显高于病理组(P<0.05,P<0.01);而过氧化氢酶(CAT)和前列腺素 E_2(PGE_2)在实验各组的比较无统计学意义(P>0.05)。结论:氧自由基脂质过氧化参与胃缺血再灌注的胃粘膜损伤过程,健脾益气和胃法的治疗对胃缺血再灌注损伤具有保护作用。此作用可能是通过抑制氧自由基过氧化损伤,提高胃粘膜 SOD、GSH-Px、NPSH 活性,增强其抗氧化能力而实现的。     

电针内关穴对心肌缺血再灌注损伤家兔心肌MDA、GSH-PX的影响

目的研究电针内关穴对心肌缺血再灌注损伤家兔心肌丙二醛、谷胱甘肽过氧化物酶含量的影响。方法将家兔随机分为4组:假手术组、模型组、电针内关组、电针列缺组。采用结扎左冠状动脉前降支30min,再灌注60min,建立心肌缺血再灌注损伤模型。应用分光光度法,观察电针对缺血再灌注损伤家兔心肌MDA、GSH-PX的影响。结果模型组家兔心肌MDA含量明显升高,而GSH-PX活性明显下降,与模型组、电针列缺组相比,电针内关组心肌MDA含量显著降低(P<0.05),而GSH-PX活性显著升高(P<0.01,P<0.05)。结论电针内关穴能显著降低缺血再灌注损伤心肌MDA含量,升高GSH-PX活性,达到抗缺血再灌注损伤的作用。     

电针"足三里"穴对家兔胃电节律紊乱调整的时间效应关系研究

目的:通过观察电针对家兔胃电节律紊乱的影响,探讨针刺治疗胃动力障碍的时效关系。方法:静脉注射红霉素复制家兔胃电节律亢进模型后,分别给予3Hz、20Hz、100Hz频率电针刺激“足三里”穴位,应用IEGG谱分析仪记录电针作用时及电针作用后10分钟的胃电总功率(PTP)。结果:100Hz频率电针作用时家兔胃电PTP显著降低(P<0.05),3Hz、20Hz电针作用时PTP无明显变化(P>0.05);三种频率电针作用后10分钟PTP均显著降低(P<0.05)。结论:电针对家兔胃电节律紊乱有显著的调节作用,可使亢进的胃肠运动降低,且电针后效应优于即时效应。     

不同频率电针对家兔胃电节律紊乱调整效应研究

目的:观察不同频率电针对红霉素诱导的家兔胃电节律亢进的调整效应,为针灸临床选择合适频率参数提供参考依据。方法:将40只家兔做耳缘静脉注射红霉素复制胃电节律紊乱模型后,随机分为模型组、3Hz电针组、20Hz电针组、100Hz电针组,后3组分别用3Hz、20Hz、100Hz3种频率电针刺激“足三里”穴位,应用IEGG谱分析仪检测不同时间段的主频功率(PDP)和总功率(PTP)。结果:红霉素可使家兔胃电PDP和PTP明显增高(P<0·001);3种频率电针对家兔胃电PDP及PTP均有显著的降低作用(P<0·05),对PDP的影响3种频率之间差异无显著性意义(P>0·05);对PTP的影响20Hz电针疗效明显优于3Hz电针组(P<0·05),但与100Hz电针组比较差异无显著意义(P>0·05)。结论:3种频率电针对家兔胃电节律紊乱有显著的调整作用,可使亢进的胃肠运动降低,而且不同频率电针对胃电的调整效应不同。     

视交叉上核在针刺调节家兔胃电中的作用研究

实验以健康家兔为研究对象,通过观察损毁SCN对电针调节胃电的影响,探讨SCN在针刺效应中的作用.目的:研究SCN在针刺效应中的作用.方法:在6个时段内观察损毁SCN前后电针足三里穴对胃电的影响.结果:健康家兔胃电频率的峰值在13时,谷值在17时,振幅的峰值在09时,谷值在21时,针刺可降低频率和振幅的峰值,升高二者的谷值;损毁SCN后,胃电频率的峰值在01时,谷值在05时和21时,振幅峰值在09时,谷值在05时,针刺只能降低频率和升高振幅.结论:健康家兔的胃电存在昼夜节律,受SCN调控;针刺能双向调节胃电,SCN对其有抑制作用.     

健脾灵治疗脾虚胃脘痛220例及胃电参数分析

自拟健脾灵治疗脾虚胃脘痛 220例.结果:对溃疡病的疗效明显优于浅表性胃炎和萎缩性胃炎,治愈率达81.4%.检查部分患者胃电参数的变化,治疗后胃电频率显著增加,与对照组相比,以健脾灵组为明显;治疗后胃电波幅亚著上升.其中健脾灵组进餐前后幅值均恢复正常.为探讨健脾益气方药治疗脾虚胃脘痛的部分机理提供了依据.     

针灸治疗慢性萎缩性胃炎36例临床观察

目的 :观察针灸结合治疗慢性萎缩性胃炎的临床疗效。方法 :慢性萎缩性胃炎患者 3 6例 ,按中医辨证 ,分型施以针灸治疗。治疗前及治疗后均进行胃镜、体表胃电图、胃酸和胃蛋白酶血中胃泌素、血中前列腺素E及胃粘膜胃泌素细胞等理化指标检查。结果 :针灸治疗本病有较好的效果 ,显效好转率达 97.2 3 % ,临床症状消失率达 97.0 2 %。治疗后可使患者血中前列腺素E等防御性因子增强 ,使患者从胃内低酸转向正常状态 ,胃动力功能增强 ,胃电图幅值回升 ,并可促使胃泌素释放 ,有利于胃酸的分泌。此外 ,针灸治疗后G细胞数目和形态及胃镜组织活检病理结果也基本恢复至正常状态。结论 :针灸治疗萎缩性胃炎简便经济 ,无副作用 ,见效快 ,疗效肯定 ,可重复性强 ,具有一定的临床意义     

EFFECT OF ELECTROACUPUNCTURE ON GASTRIC FUNCTIONAL ACTIVITY IN THE RAT

Ｉｔｉｓｗｅｌｌｋｎｏｗｎｔｈａｔｅｌｅｃｔｒｏａｃｕｐｕｎｃｔｕｒｅ(ＥＡ)ｈａｓａｎｅｖｉｄｅｎｔｒｅｇｕｌａｔｉｖｅｅｆｆｅｃｔｏｎｔｈｅｆｕｎｃｔｉｏｎａｌａｃｔｉｖｉｔｙｏｆｔｈｅ ｇａｓｔｒｏｉｎｔｅｓｔｉｎａｌｓｙｓ ｔｅｍ[1 ] ａｎｄｈａｓｂｅｃｏｍｅａｎｉｍｐｏｒｔａｎｔｍｅａｓｕｒｅｆｏｒｔｒｅａｔｉｎｇｄｉｓｅａｓｅｓｏｆｔｈｅｇａｓｔｒｏｉｎｔｅｓｔｉｎａｌｔｒａｃｔ[2 ] .Ｂｕｔｉｔｓｍｅｃｈａｎｉｓｍｓａｒｅｓｔｉｌｌｉｎｃｏｍｐｌｅｔｅｌｙｋｎｏｗｎａｔｐｒｅｓｅｎｔ.Ｒｅ…     

Effects of electroacupuncture at different points on colorectal distention-induced changes in blood pressure, electrogastrogram, gastric tension and gastric blood flow

Objective: To investigate the specificity of the effects of electroacupuncture (EA) at different acupoints on gastric functional activity and gastric blood flow after colorectal distension (CRD) in the rat.Methods: Fifty Wistar rats were randomly divided into 5 groups: a control group,a Zusanli group,a non-point group,a Taichong group and a Neiguan group.Rats were anesthetized after 18 h of fasting,and a rat model of nociceptive blood pressure elevation and abnormal electrogastrogram (EGG) and gastric tension (GT) was prepared by gasbag-induced CRD.EA was given bilaterally,and its effects on gastric blood flow (GBF) of the arcus vasculosi of the greater omentum,blood pressure,EGG fast wave properties,and gastric smooth muscle tension (GT) were quantified.Results: CRD induced an increase in blood pressure that was significantly inhibited by EA at all points (all P＜0.05),and the inhibitory effects were greater in the Zusanli and Neiguan groups compared to the non-point group (both P＜0.05).CRD also caused reductions in GT and GBF,and in the amplitude,frequency and duration of EGG waves (all P＜0.05).These effects were also reversed by EA.The effects of EA on EGG wave amplitude,GT,and GBF were superior in the Zusanli group compared to the Taichong group,Neiguan group,and the non-point group.Conclusion: EA significantly counteracted CRD-induced changes in blood pressure,GBF,EGG; and GT.The effects of stimulation at Zusanli (ST 36) were significantly greater compared to other points,indicating relative specificity of this acupoint.     

从针刺十二经穴对健康人体表胃小肠电的影响探讨经穴与脏腑相关的特异性关系

目的:通过观察针刺十二经脉经穴对健康成人体表胃、小肠电图的影响,探讨经脉、穴位与脏腑之间的相对特异性关系。方法:应用多导生理记录仪记录30例健康成人针刺不同穴位前后的体表胃、小肠电图,比较胃、小肠电图频率、振幅变化的差异。结果:针刺足三里、养老、曲池穴能使胃、小肠电振幅上升。针刺足三里、养老、通里、内关等穴位能分别调节胃、肠运动的节律;针刺足三里、养老、阴陵泉等穴能同时调节胃、肠运动的节律,促进二者协调运动。表现出与健康人胃相关的有曲池、太冲、外关、足三里、阴陵泉、养老;表现出与健康人小肠相关的有通里、阳陵泉、阴陵泉、养老。其中阴陵泉、养老与胃、肠两脏都有关系。结论:从体表经穴观察相应脏腑的功能变化发现经脉(穴)与脏腑之间确实存在着相关性关系,其效应规律可概括为"多经司控一脏"与"一经调节多脏"。     

电针调节心理性应激状态下胃动力障碍的实验研究

采用高压恒流脉冲刺激器制备心理性应激模型 ,探讨心理性应激可以导致胃运动功能障碍 ,而针刺对心理性应激状态下胃动力障碍具有防治调节作用的机理。将 96只雄性SD大鼠随机分成正常对照组、心理性应激组及心理性应激 +针刺组。电针刺激大鼠双侧“足三里” ,细胞外引导测定迷走神经背运动核 (DMV)自发放电 ,浆膜法测定胃电数据。正常情况下 ,大鼠迷走神经背运动核自发放电较少 ,胃电活动较为规律。在心理性应激状况下 ,迷走神经背运动核自发放电不规律 ,胃电活动出现紊乱 ,与正常对照组相比二者有明显差异 (P <0 0 5 )。心理应激条件下给予电针刺激大鼠“足三里” ,迷走神经背运动核自发放电较少 ,胃电活动与正常状况相接近 ,与正常对照组相比 ,二者无差异 (P >0 0 5 )。提示心理性应激可以导致胃动力障碍且二者关系密切 ,针刺“足三里”对其有明显的调节防治作用。     

STUDY ON THE THERAPEUTIC EFFECT OF ACUPUNCTURE THERAPY FOR TREATMENT OF EPIGASTRALGIA

In the present paper, the therapeutic effect of acupuncture in treatment of 42 cases of epigastralgia was observed using multiple objective indexes, including electrogastrogram (EGG), output of gastric acid and pepsase, plasma prostaglandin (PG) E and gastrin contents, the number and morphological structure of gastrin (G) cells of the antrum mucosa. These 42 cases included 18 cases of deficiency syndrome type, 13 excess syndrome type and 11 mixed type of deficiency and excess. Zhongwan (CV 12), Neiguan (PC 6) and Zusanli (ST 36) were punctured combined with other acupoints according to syndrome patterns. After treatment, 32 cases (76.19% ) were cured, 6( 14.29% ) had remarkable improvement and 4 (9.52%) had improvement, with a cure plus markedly effective rate of 90.48 %. Gastroscopic and EGG examination suggested that the function and structure of the stomach returned to normal after acupuncture. In addition, acupuncture stimulation had a bi-directional regulative action on gastric acid secretion, gastrin content, EGG activity, etc. Conclusion: Acupuncture treatment has a good regulative action on gastric function and structure in epigastraigia patients.     

Clinical observation on acupuncture treatment of 36 cases of chronic atrophic gastritis

目的:观察针灸结合治疗慢性萎缩性胃炎的临床疗效.方法:慢性萎缩性胃炎患者36例,按中医辩证,分型施以针灸治疗.治疗前及治疗后均进行胃镜、体表胃电图、胃酸和胃蛋白酶、血中胃泌素、血中前列腺素E及胃粘膜胃泌素细胞等理化指标检查.结果:针灸治疗本病有较好的效果,显效好转率达97.2%,临床症状消失率达97.0%.治疗后可使患者血中前列腺素E等防御性因子增强,使患者从胃内低酸转向正常状态,胃动力功能增强,胃电图幅值回升,并可促使胃泌素释放,有利于胃酸的分泌.结论:针灸治疗萎缩性胃炎简便经济,无副作用,见效快,疗效肯定,可重复性强,具有一定的临床意义.     

慢性胃病脾虚肝郁证与胃电、胃粘膜病理及脉—心功能的关系

本研究对56例慢性胃病(胃炎或溃疡)脾虚肝郁证患者进行胃电、胃粘膜病理观察及脉—心功能检测。结果表明;胃电波幅高低变化与该病的脾虚(虚)、肝郁(实)之间夹杂及其粘膜病理炎变有一定相关性。这对于该病的虚、实辨证和分清标本缓急,有一定应用价值。慢性胃病脾虚肝郁证也累及到心血管功能,说明中医关于心与脾、肝相关理论有其血流动力学基础。     

Electro-acupuncture of Foot YangMing regulates gastric activity possibly through mediation of the dorsal vagal complex

Acupuncture at some specific acupoints of Foot Yangming can regulate gastric activity. However, its precise mechanism remains unknown. In our study, the effects and mechanism of electro-acupuncture (EA) at Tsusanli (ST 36), Shangchuhsu (ST 37) on the regulation of gastric activity were observed. EA at Tsusanli showed that gastric electric change had a significantly higher frequency and wave amplitude as compared to that of the Shangchuhsu group and other groups. EA at Shangchuhsu demonstrated the change of gastric electric was greater than that of the non-acupoint group and the control group. After bilateral vagotomy, the change of electro gastric graph (EGG) of EA at Tsusanlis was not significant compared to the control group. In the mean time, we have observed the electric discharge of the neurons in NTS and DMV. The frequency of electro-physiological activity in nucleus of solitary tract (NTS) and dorsal motor nucleus of the vagus nerve (DMV) in Tsusanli group and Shangchuhsu group were markedly increased compared with that in other groups. The results have indicated that EA at Tsusanli and Shangchuhsu not only regulate gastric activity, but also activate neurons in NTS and DMV significantly. Our study suggests that the effect of EA at Tsusanli and Shangchuhsu on the gastric activity may partially depend upon integrated nerve pathway and related central neurons in dorsal vagal complex.