电针结合莫沙必利对糖尿病胃轻瘫大鼠胃动力的影响

目的:观察电针"足三里"结合莫沙必利灌胃对糖尿病胃轻瘫(DGP)模型大鼠胃排空率及胃运动的影响.方法:采用随机数字表法将68只雄性SD大鼠分为空白组(12只)和造模组(56只),造模组大鼠采用腹腔注射链脲佐菌素配合高脂高糖饮食制备DGP模型.6周后,将造模成功的造模组大鼠随机分为模型组、电针组、莫沙必利组、针药结合组,...     

电针对糖尿病胃轻瘫大鼠胃窦Ghrelin和GHSR蛋白及基因表达的影响

目的:探讨电针改善糖尿病胃轻瘫(DGP)大鼠胃运动的机制。方法:将48只健康SD大鼠按随机数字表法分为空白对照组、DGP模型组、电针穴位组(模型+电针穴位)、胃复安对照组(模型+胃复安灌胃)4组各12只。采用腹腔注射链脲佐菌素(STZ)配合高糖高脂饮食建立大鼠DGP模型,电针足三里、三阴交及梁门穴以观察大鼠血糖、尿糖值和胃排空率,ELISA法检测血清胰岛素(INS)、胃窦组织促生长素(Ghrelin)含量,PCR法测定胃窦部生长素促分泌激素受体基因(GHSR mRNA)表达。结果:与空白组比较,模型组大鼠血糖、尿糖值显著增高,胃排空率、血清INS水平、胃窦Ghrelin及GHSR mRNA表达降低;经电针穴位后,血糖、尿糖值降低,胃排空率、血清INS水平、胃窦Ghrelin及GHSR mRNA表达增高。结论:电针足三里等穴位可降低DGP大鼠血糖、尿糖值,促进胃排空,这可能与其调节血清INS含量、胃窦Ghrelin及GHSR mRNA表达有关。     

电针对糖尿病胃轻瘫大鼠胃窦促生长素mRNA、生长激素促分泌素受体mRNA表达的影响

目的:观察电针"足三里"等穴对糖尿病胃轻瘫(DGP)大鼠胃肠运动和促生长素(ghrelin)mRNA、生长激素促分泌素受体(GHSR)mRNA表达的影响,探讨电针治疗DGP的可能机制。方法:60只SD大鼠随机分为空白对照组、模型组、电针穴位组、电针非穴组、胃复安对照组,每组12只。采用单次腹腔注射2%链脲佐菌素配合高糖高脂饮食建立DGP大鼠模型。电针穴位组取大鼠"足三里""梁门""三阴交"穴;电针非穴组取"足三里""梁门""三阴交"穴位对照点;胃复安对照组予胃复安药液(1 mL/100g)灌胃。用血糖仪测血糖,尿糖试纸测尿糖。治疗结束后以酚红为标记物,观察大鼠胃排空率及小肠推进率;实时荧光定量多聚核苷酸链式反应法检测大鼠胃窦部ghrelin mRNA、GHSR mRNA的表达。结果:与空白对照组比较,模型组胃排空率及小肠推进率明显降低,ghrelin mRNA、GHSR mRNA表达降低(P0.01,P0.05)。与模型组比较,电针穴位组胃排空率及小肠推进率明显升高,ghrelin mRNA、GHSR mRNA表达升高(P0.05,P0.01)。与电针非穴位组比较,电针穴位组胃排空率及小肠推进率明显升高(P0.05,P0.01)。结论:电针可促进DGP大鼠胃肠运动,其作用机制可能与上调ghrelin mRNA、GHSR mRNA在胃窦部的表达相关。     

电针对糖尿病胃轻瘫大鼠胃动力及胃窦组织Ghrelin和GHSR mRNA表达的影响（英文）

目的:探讨电针改善糖尿病胃轻瘫(DGP)大鼠胃动力的机制。方法:将48只健康SD大鼠随机分为4组,即空白对照组(A组)、模型组(B组)、电针穴位组(C组)和电针非穴组(D组),每组12只。采用腹腔注射链脲佐菌素配合高糖高脂饮食建立大鼠DGP模型。观察大鼠血糖、尿糖值和胃排空率,采用酶联免疫法检测血清胰岛素含量、胃窦组织促生长素(ghrelin)含量,实时荧光定量PCR法测定胃窦部生长素促分泌激素受体基因(GHSR mRNA)的表达。结果:与空白组比较,模型组大鼠血糖、尿糖值显著增高(P0.01),胃排空率、血清胰岛素水平、胃窦ghrelin及GHSR mRNA表达显著降低(P0.05或P0.01);经电针穴位后,血糖、尿糖值显著降低(P0.05),胃排空率、血清胰岛素水平、胃窦ghrelin及GHSR mRNA表达显著增高(P0.05或P0.01)。结论:电针可降低DGP大鼠血糖、尿糖值,促进胃排空,这可能与其调节血清胰岛素含量,胃窦ghrelin及GHSR mRNA表达有关。     

点灸、电针对糖尿病胃轻瘫大鼠胃窦内皮细胞型一氧化氮合酶及血管紧张素ⅡmRNA表达的影响

目的:观察点灸、电针对糖尿病胃轻瘫(DGP)大鼠胃肠运动和内皮细胞型一氧化氮合酶(eNOS)、血管紧张素Ⅱ(ATⅡ)mRNA表达的影响,探讨点灸、电针治疗DGP的效应差异及作用机制。方法:SD大鼠随机分为空白组、模型组、点灸组、电针组,每组10只。采用腹腔注射2%链脲佐菌素配合高脂高糖饮食建立DGP大鼠模型。点灸组和电针组选取"足三里""三阴交""梁门"穴,点灸组于0、10、20min对穴位进行点灸,电针组电针20min,每日治疗1次,治疗15d。检测各组大鼠血糖、胃排空率和小肠推进率,ELISA法检测血浆内皮素1(ET-1)含量,Real-time PCR法检测胃窦部组织eNOS mRNA、ATⅡmRNA的表达。结果:与空白组比较,模型组血糖明显升高(P0.01);与模型组比较,点灸组和电针组血糖明显降低(P0.05)。与空白组比较,模型组胃排空率及小肠推进率显著降低(P0.01),血浆ET-1含量显著升高(P0.01),胃窦部eNOS mRNA表达显著降低、ATⅡmRNA表达显著升高(P0.01)。与模型组比较,点灸组与电针组胃排空率及小肠推进率显著升高,血浆ET-1含量显著降低,胃窦部eNOS mRNA表达显著升高、ATⅡmRNA表达显著降低(P0.05)。点灸组与电针组之间比较差异无统计学意义(P0.05)。结论:点灸与电针均可有效促进DGP大鼠胃肠运动,改善胃排空迟缓症状,两种疗法疗效相当,其作用机制可能与升高胃窦部eNOS mRNA表达、降低ATⅡmRNA表达有关。     

电针对糖尿病胃轻瘫大鼠胃窦Cajal间质细胞超微结构及干细胞因子-kit信号途径的影响

目的:观察电针对糖尿病胃轻瘫(DGP)大鼠胃肠运动及其胃窦起搏细胞Cajal间质细胞(ICC)超微结构、c-kit受体蛋白表达及干细胞因子(SCF)基因表达的影响,探讨电针治疗DGP的机制。方法:SD大鼠随机分为空白对照组、模型组、电针穴位组、电针非穴组、胃复安对照组,每组10只。腹腔注射2%链脲佐菌素结合高糖高脂饲料不规则喂养制备DGP模型。电针穴位组电针"足三里""梁门""三阴交",电针非穴组电针"足三里""梁门""三阴交"穴位对照点,胃复安对照组予1.7%胃复安药液(1mL/100g)灌胃,均每日1次,连续15d。监测血糖,酚红灌胃法测量大鼠胃排空率及小肠推进率,透射电镜法检测胃窦ICC超微结构,Western blot法、RT-PCR法分别检测大鼠胃窦c-kit蛋白及SCF mRNA表达水平。结果:与空白对照组比较,模型组大鼠血糖显著升高(P0.01),胃排空率和小肠推进率显著降低(P0.01),ICC呈细胞凋亡样改变,SCF mRNA表达量显著下降(P0.01);与模型组比较,电针穴位组大鼠血糖明显降低(P0.05),胃排空率及小肠推进率显著升高(P0.05,P0.01),ICC数目增加,受损超微结构得到修复,SCF mRNA表达量显著升高(P0.01);与电针非穴组比较,电针穴位组ICC受损超微结构有所恢复,SCF mRNA表达量明显升高(P0.05)。各造模组间比较,c-kit蛋白表达水平差异无统计学意义(P0.05)。结论:电针"足三里"等穴可调控DGP大鼠血糖,促进胃肠排空,其作用机制可能与上调SCF mRNA,修复受损ICC超微结构,恢复其起搏功能,进而改善胃肠运动障碍有关。     

电针对糖尿病胃轻瘫大鼠胃窦组织胰岛素生长因子1及其受体的影响

目的:观察电针"足三里""梁门""三阴交"对糖尿病胃轻瘫(DGP)大鼠胃肠动力、胃窦胰岛素样生长因子1(IGF-1)及其受体(IGF-1R)表达的影响,探讨电针治疗DGP的可能机制。方法:SD大鼠随机分为空白对照组、模型对照组、电针腧穴组、电针非穴组、胃复安对照组,每组10只。采用腹腔注射2%链脲佐菌素(55mg/kg)结合高脂高糖不规律饮食制备DGP模型。电针腧穴组取单侧"足三里""梁门""三阴交"电针治疗,电针非穴组取同侧三穴对照点电针治疗,胃复安对照组予1.7%胃复安药液(1mL/100g)灌胃,均每天1次,连续干预15d。观察各组大鼠症状积分、血糖、胃排空率、小肠推进率,ELISA法检测胃窦组织IGF-1及IGF-1R的含量。结果:与空白对照组比较,模型对照组胃排空率及小肠推进率明显降低,血糖、症状积分、胃窦组织IGF-1及IGF-1R含量明显升高(P0.01)。与模型对照组比较,电针腧穴组、胃复安对照组胃排空率及小肠推进率明显升高(P0.05,P0.01),电针腧穴组血糖、症状积分、胃窦组织IGF-1及IGF-1R含量明显降低(P0.05,P0.01)。与电针腧穴组比较,电针非穴组及胃复安对照组症状积分、胃窦组织IGF-1及IGF-1R含量均明显升高(P0.05,P0.01)。结论:电针腧穴能降低DGP大鼠血糖水平,促进胃肠动力,其作用机制可能与降低胃窦组织IGF-1及IGF-1R含量有关。     

电针促进糖尿病胃轻瘫大鼠胃肠动力的机制研究（英文）

目的:观察电针足三里等穴对糖尿病胃轻瘫(DGP)大鼠胃肠运动及其起搏细胞[Cajal间质细胞(ICC)]超微结构的影响,探讨电针治疗DGP的机制。方法:将50只SD大鼠随机分为A组、B组、C组、D组和E组,每组10只,A组为空白对照组,B组、C组、D组和E组采用单次腹腔注射2%的链脲佐菌素(STZ),并配合8星期高糖高脂饮食建立DGP大鼠模型。B组为模型组,不接受治疗;C组为电针穴位组,采用电针足三里、梁门、三阴交治疗;D组为电针非穴位组,采用电针足三里、梁门、三阴交的对照点治疗;E组为胃复安组,采用胃复安药液灌胃治疗。采用ONE TOUCH血糖仪测血糖,酚红灌胃法测胃排空率及小肠移行率,透射电镜法检测胃窦ICC超微结构。结果:造模后,B组、C组、D组和E组大鼠血糖值与A组比较,差异均具有统计学意义(P0.01);治疗后,D组和E组大鼠血糖值与C组比较,差异均具有统计学意义(P0.05,P0.01)。B组大鼠胃排空率与A组比较,差异具有统计学意义(P0.01);C组大鼠胃排空率与B组比较,差异有统计学意义(P0.05);B组、C组、D组和E组大鼠小肠移行率与A组比较,差异均具有统计学意义(P0.01),C组大鼠小肠移行率与B组比较,差异有统计学意义(P0.01)。B组大鼠ICC超微结构与A组比较,细胞呈凋亡状态;C组大鼠ICC有完整的基膜,胞浆中可见数目较多的线粒体、高尔基体及粗面内质网,结构尚清晰,偶见线粒体肿胀,与邻近平滑肌细胞间有缝隙连接存在;D组及E组与B组相比无明显差异。结论:电针足三里等穴可调控DGP大鼠血糖,促进胃肠运动,其作用机制可能与修复受损ICC结构有关。     

电针“足三里”等穴对糖尿病胃轻瘫大鼠胃窦Cajal间质细胞自噬与凋亡的影响

目的：观察大鼠胃窦Cajal间质细胞(interstitial cells of cajal, ICC)自噬蛋白表达与凋亡,探讨电针改善糖尿病胃轻瘫(diabetic gastroparesis, DGP)大鼠胃动力的可能作用机制。方法：64只SD大鼠随机分为对照组和造模组,采用腹腔注射链脲佐菌素(streptozocin, STZ)及高脂高糖饲料不规则喂养制备DGP大鼠模型,8周后将造模成功大鼠随机分为模型组、电针组、胃复安组,另设对照组各每组10只。电针组选取“梁门”(ST21)“足三里”(ST36)“三阴交”(SP6)穴行电针治疗,并用0.9%氯化钠溶液灌胃(1 mL/100 g),胃复安组用1.7%胃复安药液灌胃(1 mL/100 g),模型组和对照组均用0.9%氯化钠溶液灌胃(1 mL/100 g),治疗前后测量大鼠血糖值,酚红灌胃法计算胃排空率,提取胃窦ICC原代细胞,采用Western blot法检测自噬蛋白微管相关蛋白1轻链3(microtubule-associated protein 1 light chain 3,LC3)、家蚕隔离体蛋白1(sequestosom...     

不同电针刺激强度对糖尿病胃轻瘫大鼠胃肠运动及饥饿素的影响

目的观察不同电针刺激强度对糖尿病胃轻瘫(DGP)大鼠胃肠运动和饥饿素的影响,探讨不同电针刺激强度治疗DGP的效应差异。方法 60只SD大鼠随机分为空白组、模型组和小、中、大刺激量组,每组12只。采用单次腹腔注射2%链脲佐菌素配合高脂高糖饮食建立DGP大鼠模型。造模成功后,分别采用电针小、中、大刺激量进行干预,连续15 d。用血糖仪和血糖试纸每周测定血糖;治疗结束后以酚红为标记物,观察大鼠胃排空率及小肠推进率;ELISA检测血清饥饿素含量,RT-PCR检测下丘脑饥饿素的mRNA表达,免疫组化检测下丘脑饥饿素的蛋白表达。结果与空白组比较,模型组大鼠胃排空率及小肠推进率显著降低,血清饥饿素含量、下丘脑饥饿素mRNA表达显著降低,下丘脑饥饿素蛋白表达显著升高;与模型组比较,各针刺组大鼠胃排空率、小肠推进率、血清饥饿素含量、下丘脑饥饿素mRNA表达显著升高,下丘脑饥饿素蛋白表达明显降低,且大刺激量组优于中、小刺激量组。结论电针可通过上调饥饿素含量有效促进DGP大鼠胃肠运动,改善胃排空迟缓症状,且大刺激量组疗效更佳。     

Study on the mechanisms of electroacupuncture for promoting gastrointestinal motility in rats with diabetic gastroparesis

Objective

To observe the effect of electroacupuncture (EA) at Zusanli (ST 36) on the gastrointestinal motility and the ultrastructures of pacemaker cells [the interstitial cells of Cajal (ICC)] in diabetic gastroparesis (DGP) rats and explore the mechanism of EA for DGP.

Methods

A total of 50 Sprague-Dawley (SD) rats were randomly divided into group A, group B, group C, group D and group E, with 10 rats in each group. Group A was the blank control; a single intraperitoneal injection of 2% streptozotocin (STZ) was performed in rats of group B, group C, group D and group E, with high glucose and high fat diet for 8 weeks to establish the DGP rat models. Group B was the model group and the rats did not receive any treatment; group C was EA at acupoint group and the rats received EA at Zusanli (ST 36), Liangmen (ST 21) and Sanyinjiao (SP 6); group D was EA at non-acupoint group and the rats received EA at the control points of Zusanli (ST 36), Liangmen (ST 21) and Sanyinjiao (SP 6); group E was metoclopramide group and the rats were treated by intragastric administration of metoclopramide. Blood glucose was detected using ONE TOUCH blood glucose meter; gastric emptying rate and small intestine migration rate were measured using intragastric phenol red; ultrastructures of gastric antrum ICC were detected by transmission electron microscopy.

Results

The differences of blood glucose between group B, group C, group D, group E versus that of group A were statistically significant after modeling (P<0.01); after treatment, the differences of blood glucose between group D, group E versus that of group C were statistically significant (P<0.05, P<0.01); the gastric emptying rate of rats in group B was statistically significant different from that in group A (P<0.01); the gastric emptying rate of rats in group C was statistically significant different from that in group B (P<0.01). The migration rates of rats’ small intestines in group B, group C, group D and group E were all statistically significant different from that in group A (P<0.01); the migration rate of rats’ small intestines in group C was statistically significant different from that in group B (P<0.01). The ultrastructure of rat’s ICC in group B showed apoptosis compared with that in group A; rat‘s ICC in group C had complete basement membrane, more cytoplasm mitochondria, Golgi and rough endoplasmic reticulum, showing clear structure, occasional mitochondria swelling and gap junctions with adjacent smooth muscle cells; there were no significant differences between group D, group E versus group B.

Conclusion

EA at Zusanli (ST 36) plus other acupoints can regulate the blood glucose and promote gastrointestinal motility in DGP rats, and the mechanism may be related to repairing the damaged ICC structure.

     

Effect of electroacupuncture on electrogastrogram and gastric antrum ghrelin in rats with diabetic gastroparesis

Objective

To observe the effect of electroacupuncture (EA) on the electrogastrogram and gastric antrum ghrelin in rats with diabetic gastroparesis (DGP).

Methods

Fifty Sprague-Dawley (SD) rats were randomly divided into group A, group B, group C, group D and group E, 10 rats in each group. Group A was the blank control group without intervention. Group B, Group C, Group D and Group E were treated with single dose intraperitoneal injection of 2% streptozotocin (STZ), combined with 8-week high glucose and high fat diet to establish DGP rat models. Group B was the model group without treatment. Group C was the EA at acupoint group, was treated with EA at Zusanli (ST 36), Liangmen (ST 21) and Sanyinjiao (SP 6). Group D was the EA at non-acupoint group, was treated by EA at the control points of Zusanli (ST 36), Liangmen (ST 21) and Sanyinjiao (SP 6). Rats in the metoclopramide control group received 1.7% metoclopramide solution [10 mL/(kg·bw)] by gavage. Rat’s blood glucose level was measured by blood glucose meter; gastric emptying rate was detected using phenol red as a marker; the electrogastrogram was detected by BL-420F biological function system; the protein level of ghrelin was detected by enzyme-linked immunosorbent assay (ELISA); the expression of ghrelin mRNA was detected by real-time polymerase chain reaction (RT-PCR).

Results

Compared with group A, the blood glucose of group B, C, D and E were significantly increased before and after the treatment (all P<0.01); after treatment, the gastric emptying rate of group B was significantly decreased (P<0.01), the migration rates of small intestine in group B, C, D and E were significantly lower (all P<0.01), and the protein content of ghrelin in group C was significantly decreased (P<0.01); the expressions of ghrelin mRNA were significantly increased in group B, C, D and E (all P<0.01), the mean amplitudes of electrogastrogram in group B and D were significantly decreased (both P<0.01). After treatment, compared with group B, the blood glucose of group C was significantly decreased (P<0.05), the gastric emptying rate and small intestine migration rate were significantly increased in group C and E (P<0.05, P<0.01), the small intestinal migration rate was significantly increased in group D (P<0.05), the expression of ghrelin in protein and mRNA in group C was significantly lower (P<0.01), the expression of ghrelin mRNA in group E was significantly lower (P<0.05), and the mean amplitude of electrogastrogram in group C was significantly increased (P<0.05). After treatment, compared with group D, the protein and mRNA expressions of ghrelin in group C were significantly decreased (P<0.01). After treatment, compared with group E, the protein expression of ghrelin in group C was significantly decreased (P<0.01).

Conclusion

EA at Zusanli (ST 36), Liangmen (ST 21) and Sanyinjiao (SP 6) could regulate the blood glucose level of DGP model rats, enhance electrogastrogram activity, promote gastric emptying, and regulate ghrelin expression in protein and mRNA.

     

Effect of point-moxibustion on ghrelin and GHSR-1a expressions in lateral septal nucleus of rats with diabetic gastroparesis

Objective

To observe the effect of point-moxibustion on gastrointestinal motility, mRNA and protein expressions of ghrelin and growth hormone secretagogue receptor 1a (GHSR-1a) in lateral septal nucleus of rats with diabetic gastroparesis (DGP), and to investigate the central regulatory mechanism of DGP treatment with point-moxibustion.

Methods

Forty SPF-grade Sprague-Dawley (SD) rats were randomly divided into a blank group, a model group, an electroacupuncture (EA) group and a point-moxibustion group, with 10 rats in each group. A DGP rat model was established by intraperitoneal injection of 2% streptozotocin (STZ) with 8-week irregular high-sugar and high-fat diet in the model group, the EA group and the point-moxibustion group; and rats in the blank group were injected intraperitoneally with 0.1 mmoL/L (pH 4.5) citric acid-sodium citrate buffer with 8-week normal diet. Eight weeks later, rats in the EA group were treated by EA at Zusanli (ST 36), Liangmen (ST 21) and Sanyinjiao (SP 6); while rats in the point-moxibustion group were treated by point-moxibustion at Zusanli (ST 36), Liangmen (ST 21) and Sanyinjiao (SP 6) for successive 15 d. Rats in the blank group and the model group were fixed as the control without intervention. After treatment, intestinal propulsion rate and gastric emptying rate were measured. The mRNA and protein expressions of ghrelin and GHSR-1a in the lateral septal nucleus were detected by real-time polymerase chain reaction (RT-PCR) and Western blot (WB).

Results

Compared with the blank group, the intestinal propulsion rate and gastric emptying rate of the model group were significantly lower (both P<0.01); compared with the model group, the intestinal propulsion rate and gastric emptying rate of the EA group and the point-moxibustion group increased significantly (all P<0.05). The mRNA and protein expressions of ghrelin and GHSR-1a were lower in the model group than those in the blank group (all P<0.01). The mRNA and protein expressions of ghrelin and GHSR-1a were significantly higher in the EA group and the point-moxibustion group than those in the model group (all P<0.05). There were no statistically significant differences between the EA group and the point-moxibustion group (all P>0.05).

Conclusion

Point-moxibustion at Zusanli (ST 36), Liangmen (ST 21) and Sanyinjiao (SP 6) can increase the intestinal propulsion rate and gastric emptying rate of DGP rats, and promote the mRNA and protein expressions of ghrelin and GHSR-1a in the central nervous system. The mechanism may be related to the activation of ghrelin pathway in hypothalamic arcuate nucleus-lateral septal nucleus.

     

艾灸对脾虚大鼠小肠运动吸收功能及ATP含量的影响

目的:探讨艾灸温补脾胃的作用机制.方法:40只SD大鼠随机分为4组:空白对照组(A组),脾虚模型组(B组),艾灸穴位组(C组),中药对照组(D组).采用200％大黄水浸剂灌胃造成脾虚大鼠模型,C组艾灸“足三里”“中脘”“关元”“脾俞”“胃俞”等穴,D组用中药四君子汤灌胃治疗,A组与B组不予治疗干预.观察大鼠一般症状,记录小肠推进率,间苯三酚法测定血清D-木糖含量,比色法测定空肠组织三磷酸腺苷(ATP)水平.结果:与A组比较,B组大鼠脾虚一般症状积分增高(P＜0.01),小肠推进率、血清D-木糖含量以及空肠组织ATP含量均降低(P＜0.05,P＜0.01);与B组比较,C组和D组大鼠脾虚一般症状积分降低(均P＜0.01),小肠推进率、血清D-木糖含量以及空肠组织ATP含量均增高(P＜0.05,P＜0.01);C、D两组比较差异无统计学意义(P＞0.05).结论:艾灸“足三里”等穴位可改善大鼠脾虚症状,增进小肠运动吸收功能,改善小肠能量代谢,与中药四君子汤疗效相当.     

电针“丰隆”穴对高脂血症大鼠的调控及其作用机制

目的:探讨电针“丰隆”穴治疗高脂血症的作用机制.方法:将40只健康SD大鼠随机分为正常对照组、高脂饲料组、高脂饲料治疗组、高脂+普通饲料组及高脂+普通饲料治疗组,每组8只.两治疗组电针“丰隆”穴,每日1次.治疗30 d后,检测各组大鼠血脂水平,即总胆固醇(TC)、甘油三酯(TG)、低密度脂蛋白胆固醇( LDL-C)、高密度脂蛋白胆固醇(HDL-C)含量,实时定量聚合酶链反应( RT-PCR)及免疫印迹法(Western Blotting)检测各组大鼠肝脏组织中ATP结合盒转运子A1(ABCA1)、过氧化体增殖物激活型受体α(PPARα)、肝X受体α(LXR-α)和视黄酸X受体α( RXR-α)基因表达的变化.结果:高脂饲料组大鼠血浆TC、LDL-C较正常对照组明显上升(均P＜0.01);高脂+普通饲料组大鼠血浆TC、LDL-C与高脂饲料组比较明显下降(均P＜0.01),较正常对照组仍升高明显(均P＜0.01);电针“丰隆”穴治疗后,大鼠血浆TC、LDL-C明显下降(均P＜0.01);TG、HDL-C变化不明显(均P＞0.05).与正常对照组比较,高脂饲料组大鼠肝脏ABCA1、PPARα、LXR-α及RXR-α的mRNA和蛋白含量均显著降低(均P＜0.01);高脂+普通饲料组大鼠肝脏ABCA1、PPARα、LXR-α及RXR-α的mRNA和蛋白含量与高脂饲料组比较有所上升,较正常对照组仍降低明显(均P＜0.01);电针治疗后,大鼠肝脏组织中ABCA1、PPARα、LXR-α及RXR-α的mRNA和蛋白含量均显著升高(均P＜0.05).结论:电针“丰隆”穴能够明显下调高脂血症大鼠血脂中TC、LDL-C水平,上调肝脏ABCA1、PPARα、LXR-α、RXR-α的基因表达,从而促进由其介导的胆固醇逆转运,对高脂血症具有一定的治疗作用.     

电针足阳明经穴对家兔胃粘膜损伤细胞保护作用的研究

本实验采用无水乙醇灌胃造成胃粘膜损伤后 ,分别电针足阳明经“四白”、“梁门”、“足三里”三个不同段代表穴 ,及“足三里”外 2cm的对照点 ,观察其对胃粘膜损伤后的细胞保护作用 ,以证实足阳明经与胃的相关性。结果发现 ,分别电针“四白”、“梁门”、“足三里”7日后 ,均能使胃粘膜损伤指数显著降低。电针“足三里”后 ,胃液及胃粘膜PGE2 与其他各组比较均显著增高 (P <0 0 5或 0 0 1 ) ,血清NO与模型组、电针“足三里”外 2cm组比较亦见明显增高 (P <0 0 5) ;电针“四白”、“梁门”、“足三里”以及空白组胃粘膜EGF与未经电针的模型组比较均有显著差异 (P <0 0 5或0 0 1 )。提示 ,电针家兔足阳明经不同节段的腧穴均对胃粘膜损伤细胞有保护作用 ,其中以“足三里”最满意 ,说明足阳明经与胃具有相关性 ,与此同时 ,同一经脉的穴位对相关脏腑的作用亦有着相对的特异性     

电针“丰隆”穴对高脂血症大鼠的调控及其作用机制

目的:探讨电针“丰隆”穴治疗高脂血症的作用机制.方法:将40只健康SD大鼠随机分为正常对照组、高脂饲料组、高脂饲料治疗组、高脂+普通饲料组及高脂+普通饲料治疗组,每组8只.两治疗组电针“丰隆”穴,每日1次.治疗30 d后,检测各组大鼠血脂水平,即总胆固醇(TC)、甘油三酯(TG)、低密度脂蛋白胆固醇(LDL-C)、高密度脂蛋白胆固醇(HDL-C)含量,实时定量聚合酶链反应(RT-PCR)及免疫印迹法(Western Blotting)检测各组大鼠肝脏组织中ATP结合盒转运子A1 (ABCA1)、过氧化体增殖物激活型受体α(PPARα)、肝X受体α(LXR-α)和视黄酸X受体α(RXR-α)基因表达的变化.结果:高脂饲料组大鼠血浆TC、LDL-C较正常对照组明显上升(均P＜0.01);高脂+普通饲料组大鼠血浆TC、LDL-C与高脂饲料组比较明显下降(均P＜0.01),较正常对照组仍升高明显(均P＜0.01);电针“丰隆”穴治疗后,大鼠血浆TC、LDL-C明显下降(均P＜0.01);TG、HDL-C变化不明显(均P＞0.05).与正常对照组比较,高脂饲料组大鼠肝脏ABCA1、PPARα、LXR-α及RXR-α的mRNA和蛋白含量均显著降低(均P＜0.01);高脂+普通饲料组大鼠肝脏ABCA1、PPARα、LXR-α及RXR-α的mRNA和蛋白含量与高脂饲料组比较有所上升,较正常对照组仍降低明显(均P＜0.01);电针治疗后,大鼠肝脏组织中ABCA1、PPARα、LXR-α及RXR-α的mRNA和蛋白含量均显著升高(均P＜0.05).结论:电针“丰隆”穴能够明显下调高脂血症大鼠血脂中TC、LDL-C水平,上调肝脏ABCA1、PPARα、LXR-α、RXR-α的基因表达,从而促进由其介导的胆固醇逆转运,对高脂血症具有一定的治疗作用.     

Effect of acupuncture at points selected from different regions on SCF-kit signaling pathway in diabetic gastroparesis rats

Objective

To observe the effect of acupuncture at points selected from different regions on the positive expression of interstitial cells of Cajal (ICC) and the stem cell factor (SCF) in gastric antrum tissues in diabetic gastroparesis (DGP) rats, and to explore the influence of region-based point selection on the acupoint combination efficacy.

Methods

Sixty Sprague-Dawley (SD) rats were randomly divided into a normal group (group A), a model group (group B), a group of Zusanli (ST 36) plus Zhongwan (CV 12) (group C), a group of Zusanli (ST 36) plus Neiguan (PC 6) (group D), and a group of Zusanli (ST 36) plus non-meridian non-acupoint points (group E), based on the random number table (n=12). DGP rat model was established by single intraperitoneal injection of 2% streptozotocin and common diet. After successful modeling, the rats were treated once a day for 4 weeks. Positive ICC and SCF expressions were measured by immunohistochemistry.

Results

Compared with group A, the gastrointestinal propulsion rate of group B showed a statistically significant decrease (P<0.05). Compared with group B, the gastrointestinal propulsion rate and the expression of ICC in the gastric antrum were significantly higher in group C, group D and group E, and the between-group differences were statistically significant (P<0.05); the expression of C-kit protein in group C was statistically significantly higher than that in group D and group E (P<0.05). The expression of SCF protein was significantly increased in group C than in group B, and the difference was statistically significant (P<0.05).

Conclusion

Acupuncture can improve the symptoms of delayed gastric emptying in DGP model rats, and regulate the expression of ICC and SCF in gastric antrum tissues. The effect of Zusanli (ST 36) plus Zhongwan (CV 12) in the gastric region is superior to that of the Zusanli (ST 36) plus distal Neiguan (PC 6) or non-meridian non-acupoint point, indicating that region-based point selection is the key factor affecting the effect of acupoint combination.

     

足三里配不同穴改善急性胃黏膜损伤作用的对比研究

目的:观察足三里配不同穴改善急性胃黏膜损伤的作用,探讨其机理。方法:100只大鼠随机分为10组,即“足三里”组(A组)、“足三里”配“内关”组(B组)、“足三里”配“中脘”组(C组)、“足三里”配“公孙”组(D组)、“足三里”配“内关”“中脘”组(E组)、“足三里”配“内关”“公孙”组(F组)、“足三里”配“中脘”“公孙”组(G组)、“足三里”配“内关”“中脘”“公孙”组(H组)、模型组(I组)、空白对照组(J组),每组10只。用无水乙醇按0·6mL/100g灌胃,造成胃黏膜损伤模型。检测各组治疗结束后胃黏膜损伤指数(UI)、表皮生长因子(EGF)、一氧化氮(NO)、胃泌素(GAS)含量。结果:各电针组EGF含量明显高于模型组(P<0·01),并能提高NO含量,降低GAS含量,与模型组比较差异有显著性意义(P<0·05);A组、B组、D组之间比较差异无显蓍性意义,而C组、F组、H组与A组比较差异有显著性意义;H组与其他各电针组比较差异有显著性意义。结论:“足三里”不同配穴能改善急性胃黏膜损伤程度,尤以“足三里”配“内关”“中脘”“公孙”组改善急性胃黏膜损伤作用最强。