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1.
左旋肉碱抗疲劳实验研究   总被引:1,自引:0,他引:1  
目的研究左旋肉碱抗疲劳的效果。方法将健康雄性昆明小鼠80只随机分入四个组:实验前肌糖原和肝糖原测定组、负重游泳组、血乳酸测定组、尿素氮测定组,每个实验各20只小鼠。每个组再随机分成对照组和实验组,每组10只。对照组每天以蒸馏水灌胃,实验组以600mg/kg左旋肉碱灌胃,连续6周后分别测定肝糖原、肌糖原、游泳时间、血乳酸、血清尿素氮含量等指标,观察左旋肉碱抗疲劳效果。结果左旋肉碱组小鼠游泳时间和运动前肌肝糖原含量较对照组明显增加(P<0.05),游泳30min和游泳60min的肌肝糖原消耗均较对照组明显减少(P<0.05),力竭游泳后肝糖原消耗较对照组显著减少(P<0.05),但肌糖原消耗与对照组比较差异无统计学意义(P>0.05);运动后左旋肉碱组乳酸增加较对照组明显降低(P<0.05),休息30mim后血乳酸含量较对照组降低,恢复率明显增加(P<0.05);运动结束休息60min后左旋肉碱组血清尿素氮增量与对照组比较差异无统计学意义(P>0.05),但休息120min后,左旋肉碱组血清尿素氮含量较对照组明显降低,恢复率显著增高(P<0.05)。结论左旋肉碱具有抗疲劳作用,其抗疲劳作用机理主要与左旋肉碱增加肌肝糖原储备,减少运动后肌肝糖原消耗,抑制乳酸生成,加速乳酸和尿素氮清除有关。  相似文献   

2.
枸杞多糖抗疲劳作用的实验研究   总被引:9,自引:0,他引:9  
目的评价枸杞多糖对小鼠的抗疲劳作用。方法分别以175、350、700mg/kg.BW剂量的枸杞多糖经口给予小鼠连续灌胃30d后,进行负重游泳试验,血清尿素、肝糖原和血乳酸测定。结果枸杞多糖中、低剂量组小鼠的游泳时间明显长于对照组(P<0.05或P<0.01);低剂量组小鼠运动后血清尿素氮含量低于对照组(P<0.05);各剂量组小鼠肝糖原含量均高于对照组(P<0.05或P<0.01)。枸杞多糖各剂量组小鼠运动后的血乳酸含量均小于对照组(P<0.01)。结论枸杞多糖具有抗疲劳作用。  相似文献   

3.
目的研究玉米须、马齿苋提取物及二者配伍的抗疲劳作用及其机制。方法将小鼠随机分成正常对照组、玉米须提取物组、马齿苋提取物组、玉米须马齿苋提取物(1:2)配伍组,以生药为500mg/kg·d-1,正常对照组给予同等剂量的生理盐水连续给药30d,测定负重游泳时间、血清尿素氮和肝糖原水平。结果与正常组比较,各组均可显著延长小鼠游泳耗竭时间(P<0.05或P<0.01),提高肝糖原的含量(P<0.05或P<0.01),且配伍组抗疲劳作用优于单一提取物组(P<0.05);但各组对小鼠运动后血清尿素氮水平均无明显影响(P>0.05)。结论玉米须、马齿苋提取物配伍对小鼠有抗疲劳作用,且两者配伍抗疲劳作用更显著。  相似文献   

4.
目的 研究天然虾青素缓解体力疲劳的作用.方法 雄性昆明小鼠192只,体重18~22 g,按体重随机分成对照组和100、200和600 mg/kg 3个剂量组,每组48只.小鼠经口灌胃给予天然虾青素30天后,分别测定负重游泳时间、血清尿素氮、血乳酸及肝糖原含量.结果 200mg/kg和600mg/kg剂量组天然虾青素小鼠负重游泳时间显著长于对照组,小鼠游泳前后血乳酸测定曲线下的面积显著低于对照组,血清尿素氮含量低于对照组,小鼠肝糖原水平明显高于对照组.结论 天然虾青素具有缓解体力疲劳的作用.  相似文献   

5.
【目的】本文对丹酚酸B的抗疲劳及免疫调节功能作用进行了研究。【方法】分别以0、0.5、1 mg/ml剂量的丹酚酸B连续灌胃昆明小鼠15 d后,分别进行小鼠负重游泳实验、血清尿素氮、肝糖原和肌糖原及血乳酸碳末廓清试验(吞噬指数)、免疫器官质量法(胸腺指数和脾脏指数)的测定来观察抗疲劳和免疫调节作用。【结果】丹酚酸B的加药组小鼠游泳时间与对照组相比明显延长(P<0.05);血清尿素氮及血乳酸含量明显低于对照组(P<0.05);给药组小鼠的肝糖原及肌糖原的含量明显高于对照组(P<0.05);可提高小鼠吞噬细胞的吞噬指数(P<0.05)和肝脾指数(P<0.05)。【结论】丹酚酸B具有明显的抗疲劳及免疫调节作用。  相似文献   

6.
[目的]探讨复方黄芪多糖对小鼠的抗疲劳和耐缺氧作用.[方法]灌胃给予小鼠2.0,1.0,0.5g/kg复方黄芪多糖,进行负重游泳试验及常压耐缺氧试验,并检测全血血红蛋白、血清尿素氮和肝组织中糖原含量.[结果]与对照组相比较,复方黄芪多糖小剂量组小鼠负重游泳时间和缺氧条件下存活时间明显延长,中剂量组小鼠运动后血红蛋白含量明显增高,大剂量组肝糖原含量明显升高.[结论]复方黄芪多糖具有抗疲劳及耐缺氧作用.  相似文献   

7.
目的研究鼎突多刺蚁水溶性提取物的抗疲劳作用。方法将鼎突多刺蚁水溶性提取物分3个剂量组即:实验组高剂量组20mL/(kg·d)、实验组低剂量5mL/(kg·d)、对照组给予等剂量的生理盐水,各组小鼠采用灌胃给药14d,观察、测定常压下小鼠血乳酸、尿素氮、肝糖原、耐缺氧及小鼠游泳时间等指标。结果与对照组比较:灌服鼎突多刺蚁水溶性提取物的3个剂量组均能显著提高小鼠肝糖原的储备量;降低小鼠游泳后血乳酸曲线下面积;降低运动后血清尿素氮含量,加速体内尿素氮的清除速率;延长小鼠负重游泳时间。结论鼎突多刺蚁水溶性提取物对小鼠抗疲劳、耐缺氧能力具有明显的增强作用,具有抗疲劳作用。  相似文献   

8.
目的研究富氧水对小鼠的耐缺氧和抗疲劳作用。方法采用灌胃法给予小鼠不同剂量的富氧水,分别测定小鼠的常压耐缺氧时间、急性脑缺血性缺氧存活时间、亚硝酸钠中毒存活时间、负重游泳时间及小鼠游泳后血清尿素氮、血乳酸、肝糖原的含量。结果富氧水低剂量组(2.4mg/kg)小鼠常压耐缺氧生存时间较对照组显著延长(P<0.05);肝糖原储备量增加(P<0.05);血乳酸上升速度减慢(P<0.05);血乳酸曲线下面积降低(P<0.05)。与对照组比较,富氧水低剂量组急性脑缺血性缺氧生存时间、亚硝酸钠中毒存活时间和负重游泳时间差异无统计学意义,但有延长的趋势;小鼠运动后血清尿素氮含量也有降低的趋势。结论富氧水具有一定耐缺氧和抗疲劳作用。  相似文献   

9.
目的 探讨地龙蛋白和牛磺酸对小鼠抗疲劳的作用及其对免疫功能的影响.方法 采用小鼠负重游泳试验法测定负重游泳时间、运动后尿素氮含量、血乳酸曲线下面积和肝糖原含量,观察其对小鼠的抗疲劳作用;采用迟发型变态反应试验、碳廓清试验测定免疫指标,观察其对小鼠的免疫调节作用.结果 地龙蛋白和牛磺酸能够显著延长高剂量小鼠负重游泳时间(P<0.01),中剂量小鼠血清尿素氮水平显著降低(P<0.01)并增加肝糖原贮量(P<0.05);迟发变态反应试验中,中、高剂量组小鼠足跖增厚值显著增加(P<0.05),小鼠碳廓清试验,低、高剂量组碳廓清吞噬指数增加(P<0.05).结论 地龙蛋白和牛磺酸具有抗疲劳的作用,而且对细胞免疫和单核巨噬细胞吞噬能力具促进作用.  相似文献   

10.
目的:评价红景天胶囊的缓解体力疲劳作用。方法:ICR小鼠随机分为4组:对照组、低剂量组、中剂量组、高剂量组。分别以0.45 g/kg.bw、0.90 g/kg.bw、1.35 g/kg.bw剂量连续30 d经口灌胃受试物。测定体重、负重游泳时间、血清尿素氮、肝糖原、血乳酸。结果:中剂量组负重游泳时间长于对照组,差异有统计学意义。中剂量组血清尿素氮含量低于对照组,差异有统计学意义。中剂量组、高剂量组血乳酸含量低于对照组,差异有统计学意义。结论:红景天胶囊具有一定的抗疲劳作用。  相似文献   

11.
Objective: To evaluatel the value of D-dimers in patients with acute aortic dissection (AAD). Methods: This study consisted of 16 patients with AAD and 27 non-AAD patients. Serum D-dimets were measured by Sta-Liatest D-DI immunoturbidimetric assay. Results: D-dimer level was higher (P < 0.001) in patients with AAD(7.91 ± 5.52 μg/ml) than that in non- AAD group(1.57±1.24 μg/ml). D-dimer was positive (>0.4 μg/ml) in all patients with AAD and in 10 control group patients (37%). Among patients with acute AAD, D-dimers tended to be higher in Stanford A than in Stanford B (8.67 ± 4.31 μg/ml vs. 3.24±1.27 μg/ml, P <0.01). D-dimer values tended to be higher in more extended disease(3.84 ± 1.65 μg/ml, 8.57 ± 3.58 μg/ml and 11.87 ± 5.69 μg/ml in thoracic aorta, thoracic and abdominal aorta, thoracic and abdominal aorta and iliacal arteries, respectively, P < 0.05 for both 8.57 ± 3.58 and 11.87 ± 5.69 vs. 3.84 ± 1.65 ). Including the control group into the analysis, we found a sensitivity of 100%, a negative predictive value of 100%, and a specificity of 66% and a positive predictive value of 64% for D-dimer in diagnosis of AAD in our patients with suspected AAD. Conclusion: D-dimer was elevated in patients with AAD. A negative D-dimer test result could be useful in excluding AAD.  相似文献   

12.
Objective: To set up a simple and reliable rat model of combined liver-kidney transplantation. Methods: SD rats served as both donors and recipients. 4℃ sodium lactate Ringer's was infused from portal veins to donated livers,and from abdominal aorta to donated kidneys, respectively. Anastomosis of the portal vein and the inferior vena cava (IVC) inferior to the right kidney between the graft and the recipient was performed by a double cuff method, then the superior hepatic vena cava with suture. A patch of donated renal artery was anastomosed to the recipient abdominal aorta. The urethra and bile duct were reconstructed with a simple inside bracket. Results: Among 65 cases of combined liver-kidney transplantation, the success rate in the late 40 cases was 77.5%. The function of the grafted liver and kidney remained normal. Conclusion: This rat model of combined liver-kidney transplantation can be established in common laboratory conditions with high success rate and meet the needs of renal transplantation experiment.  相似文献   

13.
Objective To observe blood pressure change with age in salt-sensitive teenagers whose salt sensitivity were determined by repeated testing.Methods Salt sensitivity was determined through intravenous infusion of normal saline combined with volume-depletion by oral diuretic furosemide in 55 teenagers. After five years, salt sensitivity was re-examined and subject blood pressure was followed up. Blood pressure changes in salt-sensitive teenagers were compared to that of non-salt sensitive teenagers over five years.Results After 5 years, the repetition rate of salt sensitivity determined by intravenous saline loading is 92.7%. In teenagers with salt sensitivity on the baseline, both the systolic blood pressure increments and increment rates were much higher than non-salt sensitive teenagers (12.7±12.1 mmHg vs. 2.8±5.2 mmHg, P< 0.01; 12.2%± 12.0% vs. 2.5% ±4.4%, P< 0.001,respectively). There was a similar trend for diastolic blood pressure (8.4 ± 6.4 mmHg vs. 3.7 ± 6.4 mmHg, P = 0.052; 13.2% ±10.6 % vs. 6.8%± 10.1%, P = 0.053, respectively).Conclusions Salt sensitivity determined by intravenous saline loading showed good reproducibility. Blood pressure increments with age were much higher in salt-sensitive teenagers than non-salt sensitive teenagers, especially in terms of systolic blood pressure.  相似文献   

14.
目的:评价使用安心颗粒对急诊经皮冠状动脉介入术(PPCI)术后生活质量的影响.方法:将160例接受PPCI的急性ST段抬高型心肌梗死患者随机分为安心颗粒组(术前顿服安心颗粒8.8g,术后安心颗粒4.4 g/次,每日2次)和对照组(仅接受基础药物治疗).所有患者均服用阿司匹林、氯吡格雷和阿托伐他汀.分别在入院时、出院前1d、出院后180 d时,应用心肌梗死多维度量表(MIDAS)、中文版SF-36评价量表对患者生活质量评分.并观察术后30 d以内的出血并发症、血小板减少症发生情况.结果:入院时和出院前1d,两组患者的心肌梗死MIDAS、SF-36量表评分比较无差异(P>0.05);出院后180 d时,与对照组比较,安心颗粒组MIDAS、SF-36评分明显减低(P<0.05);组内与入院时比较,两组出院前1d、出院后180 d时,MIDAS、SF-36评分均降低(P<0.05).两组患者在随访期间均无大量出血、少量出血、重度和极重度血小板减少症发生,安心颗粒组有4例、对照组有7例发生不明显出血(P>0.05).两组发生轻度血小板减少症的患者数比较无差异(P>0.05).结论:PPCI使用安心颗粒,能改善急性ST段抬高型心肌梗死患者的生活质量,且不增加出血风险.  相似文献   

15.
Objective:To investigate the influences of urapidil and nicardipine on rabbit sinus function,atrio-ventricular node function and hemodynamics.Methods:Thirty-two Angora's rabbits were selected and randomly divided into four groups.U1 group:urapidil 0.25 mg/kg;U2 group:urapidil 0.5 mg/kg;N1 group:nicardipine 10 μg/kg;N2 group:nicardipine 20 μg/kg.All these medicine were administrated within 30 seconds.Measurements were taken before and after the administration of urapidil or nicardipine for the following data:mean blood pressure(MAP),heart rate(HR),sino-atrial conduction time(SACT),maximal sinoatrial recovery time(SNRTmax)corrected sinus node recovery time(CSNRT),index of sinus node recovery time(SNRTI),Wenckebach A-V conduction frequency (WB),and P-R interval.Results:Significant MAP and HR changes were identified in all of the four groups before and after administration of both urapidil and nicardipine.No significant changes could be found in the rest of the parameters.Intergroup analysis showed that SACT and CSNRT of N1 and N2 groups were shorter than those of the U2 group(P<0.01);the MAP decreased(P<0.01)and the HR increased drastically(P<0.01).Conclusions:Neither urapidil(0.25 mg/kg,0.5 mg/kg)nor nicardipine(10μg/kg,20μg/kg)has any significant influence on rabbit sinus function or rabbit atrio-ventricular node function.Nicardipine could be a better choice than urapidil for parafunctional sinus node patients.  相似文献   

16.
Objective:To investigate the gene expression of osteoprotegerin(OPG) and osteoclast differentiation factor(ODF) in the bone tissue of patients with hip fracture due to osteoporosis. Methods:OPGmRNA and ODFmRNA in the bone tissue in 50 cases of osteoporosis sufferers(over 50 years old) with hip fracture(Observer Group) and 30 cases of hip facture sufferers with no osteoporosis(Control group) were analyzed with the Semi-Quantitative RT-PCR method. Results:The mRNA expressed of ODF, OPG were both high in the patients with hip fracture. In the control group, the expression of OPG mRNA was observed, while the expression of ODF mRNA was very slight. Conclusion:Aged patients contained all signals including OPG, ODF that are essential for inducing osteoclastogenesis and promoting bone resorption.  相似文献   

17.
Objective:To investigate the clinical features, pathological characteristics and immunophenotype of solid-pseudopapillary tumor of the pancreas(SPTP). Methods:Nine surgically treated cases of SPTP were retrospectively reviewed. Hematoxylin and Eosin(HE) staining and immunohistochemical staining were used to analyze all cases, and the general clinical data was collected. Results:Six patients were asymptomatic except for a palpable mass. Two patients complained of vague-epigastric pain. One patient appeared jaundice. The tumor was encapsulated and solid tissues alternately with cystic tissues. Histologically, the histological structure of solid portion was pseudopapillary with a fibrovascular core. Tumor cells were uniform and medium-sized which were arranged in sheets ets or nests or pseudopapillary patterns. Immunohistochemical studies demonstrated that SPTP proved positive in vimentin(9/9 cases), AAT(9/9 cases), NSE(9/9 cases), ACT(7/9 cases), CK20(2/9 cases), CgA(1/9 cases), S-100(3/gcases), PR(4/gcases), Syn(3/9 cases) and CD56(5/9cases), negative in CEA and ER. Conclusion:SPTP is a tumor predominantly occurring in young women frequently without special symptoms. This tumor has various characteristical histological patterns with different immunophenotype.  相似文献   

18.
Objective:To probe into the influence of changes of ovarian hormones on the pathogenesis of the specific sub-type premenstrual syndrome(PMS)and reveal partial microcosmic mechanisms of adverse flow of liver-qi.Methods:Estradiol(E2)and progesterone(P)levels in serum were determined at different phases of menstrual cycle by radioimmunoassay.Results:In the group of PMS with adverse flow of liver-qi.the secretive peak value Of E2 and P at the follicular phase significantly decreased,and the secretive peak value at the luteal phase did not come into being.Conclusions:Low E2 and P secretive peak at the follicular phase and absence of secretive peak at the luteal phase is one of the microcosmic mechanisms of PMS with adverse flow of liver-qi.One of the pathophysiologic mechanisms of specific sub-type PMS is probably the continuous low level of E2and P.  相似文献   

19.
Real-time three-dimensional echocardiography (RT3DE)is a new ultrasound technique that enables dynamic threedimensional visualization and quantification of the heart in real time. Investigation of feasibility and methodology of RT3DE in determining left ventricular (LV) and right ventricular (RV) volumes, RT3DE was performed in 35 normal adults using Philips SONOS 7500 system with a 2-4 MHz matrix array transducer. The 60°×60° "pyramid" volume database was obtained and analyzed on a TomTec echo workstation. Both LV and RV volumes were calculated with four 3DE methods (i.e. apical 2, 4, 8, and 16-plane) through manually tracing ventricular endocardial borders in end diastole and end systole. Stroke volumes were then calculated. LV volume was also measured by 2DE Simpson's rule using GE VIVID 7 ultrasound machine.  相似文献   

20.
Increasing maternal age is the only etiological factor unequivocally linked to Down's syndrome in humans. The occurrence rate of newborns with Down's syndrome is about 1/220 in women over 35 years old. However, the occurrence rate in embryos fertilized in vitro, of the elder woman is unclear. Using FISH we screened the number of chromosome 21 in preimplanted embryos of 5 elderly women (average age, 38.4 years) to study the feasibility and necessity of screening trisomy 21 in embryos in patients over 35 years old at the in vitro fertilization (IVF) center.  相似文献   

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