电针改善慢性疲劳大鼠疲劳状态及痛阈的下丘脑CRH机制研究

目的:探讨电针对慢性疲劳大鼠疲劳状态、痛阈的影响及其中枢机制。方法:96只SD大鼠随机分为空白组、模型组、模针组、侧脑室假注射组(假注射组)、侧脑室注射促肾上腺皮质激素释放因子组(CRF组)、侧脑室注射CRF电针组(CRF电针组)、侧脑室注射CRFA组(CRFA组)、侧脑室注射CRFA电针组(CRFA电针组),除空白组外,采用慢性束缚复合强制性冷水游泳复制慢性疲劳模型。假注射组行侧脑室假注射,CRF组、CRF电针组行侧脑室CRF注射,CRFA组、CRFA电针组行侧脑室CRF拮抗剂注射。模针组、CRF电针组、CRFA电针组电针"肾俞"、"足三里"治疗。分别在造模前、造模后、治疗后进行力竭游泳实验、水迷宫实验、热板测痛实验检测疲劳状态及痛阈。结果:造模后,造模各组力竭游泳时间较空白组明显缩短(P<0.05),水迷宫时间较空白组明显延长(P<0.05),热痛时间较空白组明显缩短(P<0.05)。治疗后与模型组比较,模针组、CRF电针组力竭游泳时间明显延长(P<0.05),水迷宫时间明显缩短(P<0.05),热痛时间明显延长(P<0.05);CRFA电针组力竭游泳时间、水迷宫时间、热痛时间较模型组均无明显变化。结论:电针肾俞、足三里可改善慢性疲劳大鼠体力和脑力疲劳以及易感疼痛情况,下丘脑CRH是电针治疗作用的关键物质。

布依族热熨疗法对疲劳大鼠作用的神经内分泌机制研究

目的探讨布依族热熨疗法对疲劳大鼠作用的神经内分泌机制。方法将60只雄性Wistar大鼠随机分成正常对照组、模型组和布依族热熨疗法组,每组20只。正常对照组不制作模型,模型组和布依族热熨疗法组采用国内公认力竭游泳方法制作模型;正常对照组和模型组不采用任何疗法,布依族热熨疗法组给予热熨疗法治疗,1次/d,共3周。检测各组下丘脑组织5-HT、DA、NE、HVA、DOPAC和5-HIAA含量,血清皮质酮、睾酮含量,各组睾丸组织SOD、GSH和GSH-PX活性及MDA含量。结果布依族热熨疗法组尾不动时间低于模型组(P<0.05),力竭游泳时间高于模型组(P<0.05);布依族热熨疗法组下丘脑组织中5-HT、DA、5-HIAA含量高于模型组(P<0.05),而NE、HVA含量低于模型组(P<0.05);布依族热熨疗法组睾丸组织SOD、GSH和GSH-PX活性高于模型组(P<0.05),MDA含量低于模型组(P<0.05);布依族热熨疗法组血清皮质酮低于模型组(P<0.05),而睾酮含量高于模型组(P<0.05)。结论布依族热熨疗法可调节神经递质分泌,提高机体抗氧化能力和睾酮水平,从而达到改善运动疲劳的作用。

电针调整慢性疲劳大鼠下丘脑-垂体-肾上腺轴功能的中枢机制

目的:探讨电针治疗慢性疲劳综合征的作用机制。方法:将96只SD大鼠随机分为空白组、模型组、模针组、侧脑室假注射组(假注射组)、侧脑室注射促肾上腺皮质激素释放因子组(CRF组)、侧脑室注射促肾上腺皮质激素释放因子电针组(CRF电针组)、侧脑室注射促肾上腺皮质激素释放因子拮抗剂组(CRFA组)、侧脑室注射促肾上腺皮质激素释放因子拮抗剂电针组(CRFA电针组),每组12只。除空白组外,其他各组均采用慢性束缚复合强制性冷水游泳复制慢性疲劳模型。假注射组行侧脑室假注射,CRF组、CRF电针组行侧脑室促肾上腺皮质激素释放因子注射,CRFA组、CRFA电针组行侧脑室促肾上腺皮质激素释放因子拮抗剂注射。模针组、CRF电针组、CRFA电针组电针"肾俞""足三里",每天1次,每次20min,治疗3d。治疗后检测各组下丘脑室旁核促肾上腺皮质激素释放激素(CRH)表达、血浆促肾上腺皮质激素(ACTH)及皮质酮(CORT)含量。结果:模型组、假注射组、CRFA组、CRFA电针组下丘脑室旁核CRH表达灰度值较空白组升高(均P<0.05),CRF组、CRF电针组CRH表达灰度值较空白组降低(均P<0.05),模针组、CRF组、CRF电针组CRH表达灰度值较模型组降低(均P<0.05);模型组、假注射组、CRF组、CRF电针组、CRFA组、CRFA电针组血浆ACTH含量较空白组降低(均P<0.05);模型组、假注射组、CRFA组血浆CORT含量较空白组降低(均P<0.05)。结论:电针可使慢性疲劳大鼠下丘脑CRH表达升高,血浆ACTH及CORT含量升高,下丘脑室旁核CRH是电针调整慢性疲劳大鼠下丘脑-垂体-肾上腺轴功能的关键物质。

艾灸五脏背俞穴对慢性疲劳模型大鼠海马神经元形态结构的影响

目的:采用慢性应激即束缚大鼠的方法进行造模,观察艾灸五脏背俞穴对模型大鼠海马神经元形态结构的影响。方法:将雄性SD大鼠30只,饲养一周后随机分为空白组,模型组,艾灸组,每组10只。模型组与艾灸组动物造模,艾灸组在造模同时进行艾灸五脏背俞穴治疗,各组大鼠随机抽取5只,采用TUNEL(TdT酶介导的原位末端标记法)法检测各组大鼠海马神经细胞的形态学特点。结果:各组的海马CA3区内均可见数目不等的TUNEL染色阳性细胞,与模型组比较,艾灸组的TUNEL染色阳性细胞平均数显著减少(P<0.01),但仍显著多于空白组(P<0.01)。

艾灸五脏背俞穴对慢性疲劳模型大鼠行为学的影响

目的:采用慢性应激即束缚大鼠的方法进行造模,观察艾灸五脏背俞穴对模型大鼠的慢性疲劳表现以及行为学的影响。方法:将雄性SD大鼠30只,饲养1周后随机分为空白组、模型组、艾灸组,每组10只。模型组与艾灸组动物造模,艾灸组在造模同时进行艾灸五脏背俞穴治疗,并进行一般情况观测、鼠尾悬挂试验、旷场实验(开阔法)、力竭游泳实验。结果:艾灸组与模型组相比,一般情况优良,鼠尾悬挂不动时间缩短,跨格数(水平运动)和直立时间(垂直运动)增多,力竭游泳时间延长(P<0.05)。结论:艾灸五脏背俞穴可以改善模型大鼠的躯体疲劳和心理疲劳。

日粮中添加大豆黄酮对大鼠生长及疲劳应激反应能力的影响

日粮中添加大豆黄酮,研究其对大鼠生长及抗疲劳应激能力的影响.结果显示,添加大豆黄酮组大鼠平均增重显著提高(P<0.05),料重比显著降低(P<0.05),表明大豆黄酮具有显著促生长作用.与正常对照组相比,疲劳应激对照组大鼠血清GSH-Px活性极显著下降(P<0.01),MDA含量显著上升(P<0.05),血糖含量极显著上升(P<0.01),胰岛素水平有所升高而IL-2水平有所降低,差异均不显著(P>0.05).与疲劳应激对照组相比,大豆黄酮疲劳应激组GSH-Px活性极显著上升(P<0.01),血糖含量显著上升(P<0.05),胰岛素水平显著下降(P<0.05),MDA含量有所下降,IL-2水平有所上升,但差异均不显著(P>0.05).结果提示,日粮中添加大豆黄酮一定程度上能增强机体抗疲劳能力.

振肌胶囊对大鼠疲劳模型血清NO含量及NOS活性的影响

观察不同剂量振肌胶囊及爱维治对大鼠疲劳模型血清一氧化氮(NO)含量及一氧化氮合酶(NOS)活性的影响。结果显示与正常对照组相比模型组血清NO含量及NOS活性明显升高(P<0.05),与模型组相比振肌胶囊组(大剂量)血清NO含量及NOS活性明显降低(P<0.05),表明振肌胶囊可能是通过降低NO含量及NOS活性发挥其抗疲劳作用的。

振肌胶囊对大鼠疲劳模型骨骼肌细胞凋亡的影响

用游泳方法建立大鼠疲劳模型,观察爱维治与不同剂量振肌胶囊对大鼠疲劳模型血清乳酸含量及骨骼肌细胞调亡的影响。结果显示:模型组与正常对照组相比大鼠血清乳酸含量明显增高(P<0.05)。中药常规剂量组、中药大剂量组与模型组相比,血清乳酸含量明显降低(P<0.05)。与模型组相比,各组骨骼肌细胞凋亡数目明显减少(P<0.05),中药大剂量组与中药常规剂量组相比骨骼肌细胞凋亡数目亦明显减少(P<0.05)。爱维治(Actovegin)组与中药大剂量组相比肌细胞凋亡数目统计学上无差异(P>0.01),推测中药振肌胶囊抗疲劳的机理可能与降低血清乳酸及防止骨骼肌细胞的凋亡有关,其机理有待进一步研究。

不同频率电针足三里对运动大鼠下丘脑单胺类神经递质的影响

目的研究不同频率电针对运动大鼠下丘脑单胺类神经递质的影响,筛选出电针消除运动性疲劳的最佳频率。方法选用SD大鼠,采用Bedford渐增负荷跑台跑运动模型,用韩氏电针仪对运动性疲劳大鼠双侧足三里穴进行2/15Hz、2/100Hz两种不同频率的刺激,用高效液相电化学法检测各组下丘脑单胺类神经递质的含量。结果(1)运动组大鼠下丘脑内5-羟色胺(5-HT)升高,而多巴胺(DA)水平则显著降低(P<0.05,P<0.01)。(2)运动+电针(2/15Hz)、运动+电针(2/100Hz)两组下丘脑内5-HT、DA含量与运动后60min组比较,差异显著(P<0.05)。(3)运动+电针(2/15Hz)组下丘脑DA含量与运动+电针(2/100Hz)组比较,差异显著(P<0.05)。结论(1)急性运动后可显著增加下丘脑内5-HT和NA含量,降低下丘脑DA含量。(2)不同频率电针均可降低急性运动后大鼠下丘脑5-HT含量,增加DA含量。(3)2/15Hz可能是要筛选的电针消除运动性疲劳的最佳频率。

四君子汤对慢性疲劳综合征模型大鼠NK细胞活性及血清细胞因子水平的影响

目的:探讨四君子汤对慢性疲劳综合征(chronic fatigue syndrome,CFS)模型大鼠自然杀伤(NK)细胞活性及血清转化生长因子-β(TGF-β),γ干扰素(IFN-γ)水平的影响。方法:选用SD大鼠为实验动物,共分为5组:模型组、空白组、治疗组(分低、中、高3个剂量组),采取力竭游泳+剥夺睡眠20 h的复合造模方法造模,造模成功后给药组采用四君子汤ig,低、中、高剂量按生药量计分别为3.37,6.75,13.5 g.kg-1,空白组与模型组以蒸馏水ig,均每天1次,连续2周,2周后检测各组大鼠NK细胞活性及血清IFN-γ,TGF-β含量。结果:模型组大鼠NK细胞活性及血清IFN-γ,TGF-β水平与正常大鼠比较,差异均具有高度统计学意义(P<0.01);而四君子汤组与模型组相比,低、中、高3个剂量组NK细胞活性及IFN-γγ含量均升高(P<0.05),中、高剂量组TGF-β含量降低(P<0.05)。结论:四君子汤能提高CFS模型大鼠NK细胞活性,升高血清IFN-γ含量,降低TGF-β含量,具有改善CFS大鼠免疫功能的作用。

运动干预对大鼠慢性疲劳综合征形成的影响

目的:通过研究游泳运动对大鼠慢性疲劳综合征形成的干预作用及对γ-干扰素、白介素4等指标的影响,为防治CFS提供分子学方面的依据。方法:将50只8周龄Wister雄性大鼠,随机分为实验组和对照组。实验结束24 h后处死。取2-3 mL的血液低温离心分离血清于-20℃冰箱中储存备用待测皮质醇和血睾酮;取3-4 mL的血液低温离心分离血清,置于4℃冰箱中保存待测INF-γ和IL-4。结果:1)采用慢性束缚方法复制的动物模型血清睾酮值、胸腺重量非常显著性降低,皮质酮值非常显著性升高。2)不同时间的游泳对慢性束缚大鼠产生的效果不同,与模型对照组相比:(1)30 min游泳组和60 min游泳组的体重、力竭时间依次为非常显著性升高和显著性升高,血清睾酮及胸腺重量显著性升高,皮质酮值显著降低;(2)慢性束缚+力竭游泳组体重、力竭时间、血清睾酮和胸腺重量有降低趋势,皮质酮有升高趋势。3)慢性束缚可使大鼠的IFN-γ的含量非常显著性降低;4)慢性束缚可使大鼠的IL-4的含量降低,但效果不显著;各组之间无显著性差异。结论:1)慢性束缚可以成功复制慢性疲劳综合征大鼠模型。2)30min、60 min游泳特别是30 m游泳的干预作用可有效预防CFS的发生。3)30 m、60 m游泳都可以调节大鼠FIN-γ的分泌,使IFN-γ/IL-4、比率正向变化,有效预防大鼠CFS的形成。

Experimental study on the effect of moxibustion at Shenque(CV 8) for long-term exercise-induced fatigue

Objective:To investigate the effect of moxibustion at Shenque(CV 8)on fatigue in rats with chronic exercise-induced exhaustion.Methods:Thirty male Sprague-Dawley(SD)rats were randomly divided into a blank group,a model group and a moxibustion group,10 rats in each group.Except rats in the blank group,the remaining rats were subjected to create long-term exhaustion models by repeated swimming.After successful modeling,rats in the moxibustion group received mild moxibustion at Shenque(CV 8)for 15 min,once every other day with a total of 10 times.Rats in the model group and the blank group did not receive moxibustion.At the end of the treatment,the exhausted times,and the body weight of rats before and after the experiment were compared among groups.The levels of blood malondialdehyde(MDA)and urea nitrogen(BUN),as well as the activities of aspartate transarninase(AST),alanine aminotransferase(ALT)and lactate dehydrogenase(LDH)were also measured by the automatic biochemical analyzer,24 h after the exhausting excise.Results:The 10 th swimming time was significantly longer in the moxibustion group than that in the model group(P〈0.01).The increase rate of the body weight was lower in the rats of the moxibustion group than that in the model group before the 7 th and the 10 th exhausting excise(P〈0.05,P〈0.01).The levels of serum MDA and BUN,as well as the activities of AST,ALT and LDH in the model group were higher than those in the blank group(all P〈0.01).The levels of serum MDA and BUN,as well as the activities of AST,ALT and LDH in the moxibustion group were lower than those in the model group(P〈0.01).Conclusion:Moxibustion at Shenque(CV 8)can decrease the serum levels of MDA and BUN,as well as activities of AST,ALT and LDH in the long-term fatigue rats,thus to improve the symptoms of fatigue.

Effect of moxibustion at Shenque （CV 8） on free radical metabolism in rat＇s hippocampus after different degrees of exhaustive exercise

Objective： To investigate the effect of moxibustion at Shenque （CV 8） on free radical metabolism in rat＇s hippocampus after different degrees of exhaustive exercise. Methods： A total of 72 male Sprague-Dawley （SD） rats were randomly divided into a normal group （n=8）, a model group （n=32） and a moxibustion group （n=32）. According to the times of modeling or treatment, the model group was further randomly divided into different subgroups of a 1-time model subgroup, a 4-time model subgroup, a 7-time model subgroup and a 10-time model subgroup （n=8）; the moxibustion group was also further randomly divided into different subgroups of a 1-time moxibustion subgroup, a 4-time moxibustion subgroup, a 7-time moxibustion subgroup and a 10-time moxibustion subgroup （n=8）. Rats in both model and moxibustion subgroups were subjected to establishing the swimming exhaustive model. Rats in each moxibustion subgroup received mild moxibustion at Shenque （CV 8） for 15 min immediately after modeling, once every other day. The concentration of malic dialdehyde （MDA）, as well as the activities of superoxide dismutase （SOD）, glutathione peroxidase （GSH-Px） and total antioxidant capacity （T-AOC） in rat＇s hippocampus in each group were detected 24 h after the exhaustive exercise. Results： Compared with the 1-time model subgroup, the exhaustive swimming time of rats was significantly prolonged in the 4-time model subgroup （P〈0.01）, while it was significantly shortened in the 7-time and 10-time model subgroups （both P〈0.01）. Compared with the matched model subgroup, the exhaustive swimming time of rats in the 7-time and 10-time moxibustion subgroups was significantly prolonged （both P〈0.01）. Compared with the normal group, the MDA concentration was increased significantly （P〈0.01）, and the activities stress response of SOD and T-AOC were increased in the 1-time model subgroup （both P〈0.05）; the MDA concentration was increased （all P〈0.01）, and the activities of SOD, GSH-Px and T-AOC were decreased differently （P〈0.05 or P〈0.01） in the 4-time, 7-time and 10-time model subgroups. Compared with the matched model subgroup, the concentration of MDA was significantly reduced （P〈0.05 or P〈0.01）, and the activities of SOD, GSH-Px and T-AOC were significantly increased in the 4-time, 7-time and 10-time moxibustion subgroups （all P〈0.01）. Conclusion： Moxibustion at Shenque （CV 8） can improve the fatigue status of the body after long-term exhaustive exercise by regulating free radical metabolism in rat＇s hippocampus. To some extent, this provides an experimental basis for moxibustion at Shenque （CV 8） against exercise-induced fatigue.

Study on the differences between moxibustion at different points in the effects on the anti-fatigue ability of rats undergoing one-time exhaustive swimming

Objective:To observe the effects of moxibustion at Shenshu(BL 23),Zusanli(ST 36)and Shenque(CV 8)on the energy metabolism and endocrine metabolism indicators of rats undergoing one-time exhaustive swimming,and to explore the differences between moxibustion at different points in the effects on anti-exercise fatigue.Methods:Forty-eight male SPF rats were randomly divided into a blank group,a model group,a non-meridian and non-acupoint group,a Shenshu(BL 23)group,a Zusanli(ST 36)group,and a Shenque(CV 8)group using random number table method,with eight rats in each group.Except for the blank group,rats in the other groups were subjected to replicating the one-time exhaustive model using the weight-bearing swimming experiment.Except for the model group,the other model rats received mild moxibustion immediately after swimming.Rats in the non-meridian and non-acupoint group received mild moxibustion at bilateral subcostal non-meridian and non-acupoint points,those in the Shenshu(BL 23)group received mild moxibustion at bilateral Shenshu(BL 23),those in the Zusanli(ST 36)group received mild moxibustion at bilateral Zusanli(ST 36),and those in the Shenque(CV 8)group received mild moxibustion at Shenque(CV 8)for 15 min.Four hours after the exhaustive swimming,femoral artery blood was collected to detect blood lactate(BLA),lactate dehydrogenase(LDH),creatine kinase(CK),creatinine(CRE),blood urea nitrogen(BUN),cortisol(C)and testosterone(T)levels,and calculate the T/C ratio.Results:Compared with the blank group,rat's serum levels of BLA,LDH,CK,BUN and C in the model group and the non-meridian and non-acupoint group were increased,and serum levels of CRE and T,and T/C ratios were decreased(P<0.01 or P<0.05);compared with the model group and the non-meridian and non-acupoint group,the serum levels of BLA,LDH,CK,BUN and C in the Shenshu(BL 23)group,Zusanli(ST 36)group and Shenque(CV 8)group were decreased,and the serum CRE and T levels,and the T/C ratios were increased(all P<0.01);compared with the Shenshu(BL 23)group,the serum CK level was decreased in the Shenque(CV 8)group(P<0.01),the serum levels of T and C were decreased in the Zusanli(ST 36)group and Shenque(CV 8)group(P<0.01 or P<0.05),and the T/C ratio was increased in the Shenque(CV 8)group(P<0.01);compared with the Zusanli(ST 36)group,the serum CK and BUN levels were decreased(P<0.01,P<0.05),and the T/C ratio was increased in the Shenque(CV 8)group(P<0.05).Conclusion:Moxibustion at Shenshu(BL 23),Zusanli(ST 36)and Shenque(CV 8)shows different anti-fatigue effects by regulating the energy metabolism and endocrine metabolism in rats undergoing one-time exhaustive swimming.Moxibustion at Shenshu(BL 23)is better in promoting energy synthesis.Moxibustion at Shenque(CV 8)is more effective in regulating synthesis and decomposition of the skeletal muscle proteins.

Effect of moxibustion at Shenque(CV 8)on myocardial remodeling and function in exercise-induced fatigue rats

Objective To explore the effect of moxibustion at Shenque(CV 8)on myocardial structure and function in exercise-induced fatigue rats.Methods A 12-week treadmill running training was performed to create an exercise-induced fatigue rat model.Sixty eligible male specific-pathogen-free grade Sprague-Dawley rats were randomly divided into a blank group,a control group,a model group,a non-meridian non-acupoint group,a Zusanli(ST 36)group and a Shenque(CV 8)group,with 10 rats in each group.Rats in the blank group did not receive treadmill running training or moxibustion.Rats in the control group did not receive treadmill running training but received mild moxibustion at Shenque(CV 8).Rats in the model group received treadmill running training but no moxibustion.Rats in the non-meridian non-acupoint group,the Zusanli(ST 36)group and the Shenque(CV 8)group received moxibustion at the non-meridian non-acupoint points,Zusanli(ST 36)or Shenque(CV 8)immediately after each treadmill running training,15 min each time,once a day for 5 consecutive days a week at a 2-day interval,60 times of moxibustion in total.Left ventricular end-diastolic diameter(LVEDd),left ventricular end-systolic diameter(LVESd),left ventricular diastolic volume(LVDv),left ventricular systolic volume(LVSv),ejection fraction(EF),stroke volume(SV),early diastolic peak flow velocity of mitral valve(E)and late diastolic peak flow velocity of mitral valve(A)of each group before and after the last treadmill running training were measured.Blood was collected 6 h after the last treadmill running training,and serum C-reactive protein(CRP),myoglobin(Mb),creatine kinase-myocardial band(CK-MB),cardiac troponin I(cTnI)and cardiac troponin T(cTnT)levels were detected.Finally,the heart was separated,the heart mass(HM)was measured,the cTnT level of the myocardial tissue was detected,the ultrastructural changes of the left ventricular myocardium were observed by transmission electron microscope,the left ventricular fraction shortening(LVFS),E/A and heart mass index(HMI)were calculated.Results Compared with the same group before treatment,the rat cardiac LVEDd,LVESd,LVDv,LVSv,SV,E and A were significantly increased(all P<0.01),and the rat LVFS,E/A and EF were significantly decreased(all P<0.01)in the model group and the non-meridian non-acupoint group after treatment;the rat cardiac SV,LVDv,LVSv,E and A were all increased(all P<0.01),while E/A and EF were decreased(all P<0.01)in the Zusanli(ST 36)group after treatment;the rat cardiac LVDv,E and A were significantly increased(P<0.01 or P<0.05),and E/A was significantly decreased(P<0.01)in the Shenque(CV 8)group after treatment.After treatment,compared with the blank group,the rat cardiac LVEDd,LVESd,SV,LVDv,LVSv,E,A,the serum CRP,Mb,CK-MB,cTnI,cTnT and HMI,and the myocardial cTnT were increased(all P<0.01),and the LVFS,E/A and EF were all reduced(all P<0.01)in the model group;compared with the model group and the non-meridian non-acupoint group,rats in the Zusanli(ST 36)group and the Shenque(CV 8)group showed decreased LVEDd,LVESd,SV,LVDv,LVSv,E,A,serum CRP,Mb,CK-MB,cTnI,cTnT and HMI,and myocardial cTnT(P<0.01 or P<0.05),along with increased LVFS,E/A and EF(all P<0.01);compared with the Zusanli(ST 36)group,Mb and A of the Shenque(CV 8)group were decreased(both P<0.01),while both E/A and EF were increased(P<0.01,P<0.05).Transmission electron microscopy examination showed that myofibrils in the blank group and the control group were neatly arranged with clear light and dark bands;the model group and the non-meridian non-acupoint group showed different degrees of myofibril disintegration and breakage,increased and aggregated mitochondria of different sizes,and increased electron density.The myofibrils in the Shenque(CV 8)group and Zusanli(ST 36)group were arranged neatly with clear light and dark bands,and compensatory hyperplasia of mitochondria.Conclusion Moxibustion at Shenque(CV 8)and Zusanli(ST 36)both can effectively improve the occurrence of myocardial remodeling in exercise-induced fatigue rats,and the effect of moxibustion at Shenque(CV 8)is better in improving cardiac function.

Impacts of Moxibustion Therapy on Serum Corticosterone, Testosterone and Metabolism of Testicular Free Radicals in Rats with Fatigue

Objective： The study of the action mechanism of moxibustion therapy on sports fatigue in rats, in view of the expression of serum corticosterone, testosterone and testicula free radicals. Methods： Male SD rats were randomly divided into 3 groups： a control group, a model group and a treatment group. The rats were established to be in the sports fatigue model after exhaustive swimming for 21d. The time for the exhaustive swimming on the 21st day was recorded and the rats were killed in 24 h after the last swim. Samples were tested to determine the expression of serum corticosterone, serum testosterone, the ratio of testosterone and corticosterone （T/C）, testicular malondialdehyde （MDA）, glutathione （GSH）, glutathione peroxidase （GSH-Px） and superoxide dismutase （SOD）. Results： Moxibustion therapy prolonged the exhaustive swimming time, decreased serum corticosterone level, increased the T/C, reduced the MDA and improved the GSH and GSH-Px, but no significant effect was found on the SOD activity. Conclusion： The action mechanism of moxibustion therapy on release fatigue was supposed to be increasing the T/C, improving the testicular abilities of anti-oxygen free radicals and decreasing the free radical level.

Influence of Acupuncture on Biochemical Parameters in Exercise-induced Fatigue Rats

Objective： To observe the effect of acupuncture on some biochemical parameters in rats with exercise-induced fatigue and to explore the mechanism of acupuncture for exercise fatigue. Methods： The rat model of chronic exercise-induced fatigue was established by a 4-week increasing swimming training method The rats were randomly divided into a control group, a model group, a scalp acupoint group, and a body acupoint group. Preventive acupuncture methods were used. Changes of exhaustive swimming time, whole blood lactic acid （LA）, creatine kinase （CK）, blood urea nitrogen （BUN）, hemoglobin （Hb） and free tryptophan/branched chain amino acid （F-TRP/BCAA） of rats in each group before and after treatments were observed. Results： Compared with the body acupoint group, there were obvious advantages of the scalp point group in increasing Hb levels and lowering BUN and LA levels （P〈0.05）, as well as in aspects of lowering CK and F-TRP/BCAA levels （P〈0.01）. Conclusion： Scalp point acupuncture can improve the biochemical parameters in rats with exercise-induced fatigue, meanwhile, decrease the F-TRP/BCAA level, inhibit the 5-HT Droducine. and improve the rats＇ fatieue conseouentlv.

Effect of Transcutaneous Electrical Acupoint Stimulation on Rats with Chronic Exercise-induced Fatigue

Objective： To observe the effect of transcutaneous electrical acupoint stimulation （TEAS） on the rats with exercise-induced fatigue. Methods： Rat model of chromic exercise-induced fatigue was established with increasing load treadmill walking method. The TEAS therapy was operated immediately and 3 h after the exercise from the sixth week. Hippocampal morphology and hypothalamic morphology were observed with HE staining and the expressions of 5-hydroxytryptamine （5-HT） in hippocampus and hypothalamus were tested with immunohistochemical （IHC） staining after 2-week treatment. Results： TEAS released the damage of hippocampal morphology and hypothalamic morphology induced by exercise significantly and reduced the expression of 5-HT in hippocampus and hypothalamus. The difference between the therapy operated immediately and 3 h after exercise was not significant. Conclusion： TEAS could improve the fatigue recovery and athletic ability. The improvement of TEAS on the rats with exercise-induced fatigue was related with the decreased expression of central 5-HT and the reduction of damaged nerve cells.

Effect of moxibustion at Shenque (CV8) on immune system in rats with different degrees of exhaustive exercise

Objective: To investigate the effect of moxibustion at Shenque (CV8) on the immune system in rats with different levels of exhaustive exercise. Methods: Fifty-six male Sprague-Dawley (SD) rats were randomly divided into a blank group (n=8), an exhaustive group (n=24), and a moxibustion group (n=24). The exhaustive group was randomly divided into a 1-time exhaustive group, a 4-time exhaustive group and a 7-time exhaustive group, with 8 rats in each group. According to the treatment time, the moxibustion group was randomly divided into a 1-time moxibustion group, a 4-time moxibustion group and a 7-time moxibustion group, with 8 rats in each group. Rats in the exhaustive groups and the moxibustion groups were subjected to replicating the exhaustive swimming models. Rats in each moxibustion group received mild moxibustion for 15 min immediately after the exhaustive modeling, once every other day. Twenty-four hours after the corresponding exhaustive exercise, the rats in each group were tested for the levels of serum immunoglobulin (Ig) G, IgA, IgM and acid phosphatase (ACP), and the morphological changes of spleen tissues were observed. The level of IgA was detected by immunoturbidimetric assay, and the levels of IgG, IgM and ACP were detected by en zyme-linked imm uno sorb ent assay (ELISA). Results: Compared with the 1-time exhaustive group, swimming time of rats in the 4-time exhaustive group was significantly proIonged (P<0.01), and swimming time of rats in the 7-time exhaustive group was significantly shortened (P<0.01). Compared with the 7-time exhaustive group, exhaustive swimming time of rats in the 7-time moxibustion group was significantly proIonged (P<0.01). Compared with the blank group, the IgG level in the 1-time exhaustive group was significantly decreased (PvO.Ol), and the levels of IgG, IgA and IgM in the 4-time exhaustive group and the 7-time exhaustive group were all sign ifica ntly decreased (P<0.05 or PvO.Ol), while the ACP level was in creased sign ifica ntly (both P<0.01). Microscopically, the number of splenic corpuscles in the 1-time exhaustive group was reduced;the center of some splenic corpuscles in the 4-time exhaustive group was damaged;the number of splenic corpuscles in the 7-time exhaustive group was reduced, and there was no obvious germinal center. Compared with the 4-time exhaustive group, the IgA level in the 4-time moxibusti on group was sign ifica ntly in creased (P<0.01), and the ACP level was sign ifica ntly decreased (P<0.01). Compared with the 7-time exhaustive group, the levels of IgG, IgA and IgM in the 7-time moxibustion group were sign ifica ntly in creased (all PvO.Ol), and the ACP level was sign ifica ntly decreased (P<0.01). Microscopically, the nu mber of splenic corpuscles in the 1-time moxibustion group was reduced;the center of some splenic corpuscles in the 4-time moxibustion group was damaged together with hyperplasia of some splenic corpuscles;blast cells were proliferated in the center of some splenic corpuscles in the 7-time moxibustion group. Conclusion: Moxibustion at Shenque (CV 8) can improve the levels of IgG, IgA and IgM, reduce the ACP level, repair damaged spleen tissues, and enhance the immunity of the body to some extent in the Iong-term fatigue rats.

Effects of Tuina on serum creatine kinase and skeletal muscle mitochondria in delayed onset muscle soreness model rats

Objective To observe the effect of Tuina(Chinese therapeutic massage)on creatine kinase(CK),mitochondrial Ca^(2+)concentration,and ultrastructure of skeletal muscle in delayed onset muscle soreness(DOMS)model rats.Methods A total of 130 healthy male Sprague-Dawley rats were randomly divided into a blank group,an exercise control group,a pre-exercise Tuina group,and a post-exercise Tuina group.According to the time points for sample collection,the exercise control group was divided into a 0 h exercise control group,a 24 h exercise control group,a 48 h exercise control group,and a 72 h exercise control group;the pre-exercise Tuina group was further divided into a 0 h pre-exercise Tuina group,a 24 h pre-exercise Tuina group,a 48 h pre-exercise Tuina group,and a 72 h pre-exercise Tuina group;and the post-exercise Tuina group was divided into a 0 h post-exercise Tuina group,a 24 h post-exercise Tuina group,a 48 h post-exercise Tuina group,and a 72 h post-exercise Tuina group.Rats in all groups except for the blank group received DOMS modeling.Professionals performed Nie-Pinching manipulation and finger Nian-Twisting manipulation on the lower limbs of the rats.The samples were collected at 0 h,24 h,48 h,or 72 h after exhaustive exercise for each pre-exercise Tuina group.The samples were collected at 0 h,24 h,48 h,or 72 h after Tuina for each post-exercise Tuina group.The changes in serum CK,skeletal muscle mitochondrial Ca^(2+)concentration,and Ca^(2+)-adenosine triphosphatase(ATPase)were determined.The ultrastructure changes of skeletal muscles in each group were observed by a transmission electron microscope.Results The electron microscope showed that compared with the exercise control group,the skeletal muscle structures of the pre-exercise Tuina group and the post-exercise Tuina group were significantly improved,and the overall performance of skeletal muscle in the pre-exercise Tuina group was more similar to that of the blank group.The level of serum CK in the pre-exercise Tuina group and the post-exercise Tuina group was significantly lower than that in the exercise control group(P<0.01).The Ca^(2+)concentration of skeletal muscle in the 24 h,48 h,and 72 h pre-exercise Tuina groups was lower than that in the post-exercise Tuina group at the same time point(P<0.01).The Ca^(2+)-ATPase concentration of skeletal muscle in the 24 h and 72 h pre-exercise Tuina groups was lower than that in the post-exercise Tuina group at the same time point(P<0.05).Conclusion Tuina effectively prevents muscle damage caused by heavy exercise and long-term exercise,which may be related to the increase of skeletal muscle Ca^(2+)-ATPase activity and mitochondrial Ca^(2+)transport.