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1.
  目的  对紫红獐牙菜4个提取部位进行降血糖活性筛选。  方法  采用乙醇提取法提取紫红獐牙菜的乙醇提取物,并将提取物依次用石油醚、氯仿、乙酸乙酯、正丁醇进行萃取,得到氯仿、乙酸乙酯、正丁醇、水4个部位,对此4个提取部位进行由四氧嘧啶诱导的I型糖尿病小鼠降血糖活性筛选,每天称量各组小鼠饮食饮水量,从第3天开始,每2 d称1次体重,第7天、第14天断尾取血测量各组小鼠血糖值。  结果  紫红獐牙菜乙酸乙酯,水部位能显著增加糖尿病小鼠体重(P < 0.05)、降低糖尿病小鼠饮食量(P < 0.05),饮水量(P < 0.05),血糖值(P < 0.05)。  结论  紫红獐牙菜乙酸乙酯部位、水部位能显著改善由四氧嘧啶诱导的I型糖尿病小鼠三多一少症状,显著降低糖尿病小鼠血糖,具有较强的降血糖活性。  相似文献   

2.
鬼箭羽不同提取部位对糖尿病大鼠药理作用的研究   总被引:1,自引:0,他引:1  
目的研究鬼箭羽不同提取部位对糖尿病大鼠的药理作用,追踪有效部位,为进一步明确鬼箭羽治疗糖尿病的有效成分和建立其质量控制标准打下基础。方法腹腔注射链脲菌素(STZ)复制大鼠糖尿病模型,并分为模型组、治疗组,健康大鼠为正常组。治疗组分别给予鬼箭羽不同提取部位即石油醚、乙酸乙酯、正丁醇、水、残渣、精制多糖部位。4周后观察体重增加量及血糖、血脂、肌酐、尿素和全血黏度、全血高/低切还原黏度等。结果石油醚、水和乙酸乙酯部位降糖作用明显;正丁醇和精制多糖部位降血肌酐作用明显,其余各组降血尿素作用显著;残渣部位能明显降低低密度脂蛋白、胆固醇含量;水部位降低血液黏度作用明显,精制多糖部位能显著提高红细胞压积;除精制多糖组体重减轻外其余治疗组体重均增加。结论鬼箭羽各提取部位在降糖、降脂、改善肾功能、降低血液黏度、增加体重方面作用各有侧重,单味鬼箭羽可通过影响糖尿病发病的不同环节治疗和预防糖尿病及其并发症。  相似文献   

3.
羊栖菜抗水产动物致病性海洋弧菌活性成分研究   总被引:1,自引:0,他引:1  
目的:对大型海藻羊栖菜体内抗水产动物病原菌活性成分进行分离分析。方法:采用平板扩散法研究羊栖菜不同有机溶剂粗提物及其乙醇提取物乙酸乙酯部位的分离纯化组分对来源于不同水产养殖动物的致病性海洋弧菌的抑制作用。结果:羊栖菜提取物对多种致病性海洋弧菌具有较好的抗性,其中羊栖菜乙醇提取物的乙酸乙酯部位对源自锯缘青蟹(Scylla serrata)的溶藻弧菌(Vibrio alginolyticus)的抑制作用最明显,抑菌圈直径Φ可达21.6 mm;经色谱柱层析分离和GC-MS分析结果表明,羊栖菜乙醇提取物乙酸乙酯部位的活性物质第二次分离中的抗菌活性较强组分主要为5,5,8a-三甲基萘烷-1-酮、山菊醇,4-羟基苯甲酸、1,10-癸二醇。结论:羊栖菜体内有多种活性成分对致病性海洋弧菌具有抗性。  相似文献   

4.
目的:观察天花粉的降糖作用并筛选其有效部位。方法:天花粉乙醇提取物用水分散后分别用石油醚、乙酸乙酯,正丁醇萃取得到3个提取物;天花粉水提物用硫酸铵沉淀,蒸馏水透析得到凝集素粗品。检测天花粉4种提取物对人肝癌细胞HepG2的葡萄糖消耗量的影响;建立四氧嘧啶糖尿病小鼠模型,对各提取物进行降血糖研究,确定天花粉降糖有效部位。结果:乙酸乙酯部位和凝集素粗品具有较强的降糖作用,其中以凝集素部位为佳。结论:凝集素为天花粉降糖的主要有效部位。为进一步开发天花粉降糖有效成分提供了理论依据。  相似文献   

5.
超声波提取玉米须多糖对糖尿病小鼠血糖的影响   总被引:2,自引:0,他引:2  
目的:为探讨玉米须多糖的超声波提取方法,同时观察其降糖生理活性。方法:本实验采用超声波提取法从玉米须中提取玉米须总多糖;采用四氧嘧啶造糖尿病模法,研究玉米须多糖对糖尿病小鼠血糖及糖代谢的影响。结果:实验表明玉米须多糖对四氧嘧啶致糖尿病小鼠具有显著的降血糖作用。结论:玉米须多糖对糖尿病模型小鼠有较好的治疗作用。  相似文献   

6.
桦褐孔菌在民间虽然应用广泛,但对桦褐孔菌的现代药理研究报道甚少,本论文重点研究桦褐孔菌中降糖的活性部位及其提取工艺,利用石油醚,乙酸乙酯,正丁醇回流提取,制备桦褐孔菌三萜的不同极性成分,然后利用水提醇沉的方法,回收乙醇得多糖浸膏,利用四氧嘧啶糖尿病小鼠模型,取血糖值大于11.1mmol/L作为糖尿病模型.对桦褐孔菌各极性部位进行抗糖尿病作用的药效学实验研究,确定桦褐孔菌中多糖具有降糖活性的有效部位.  相似文献   

7.
黄连解毒汤降血糖作用的实验研究   总被引:12,自引:0,他引:12  
目的:观察黄连解毒汤的降血糖作用。方法:建立四氧嘧啶致小鼠的糖尿病模型,研究黄连解毒汤对正常动物和模型动物血糖的影响。结果:黄连解毒汤能拮抗四氧嘧啶诱导的小鼠高血糖,明显降低正常小鼠、四氧嘧啶糖尿病鼠的空腹血糖(FBG)。结论:黄连解毒汤有较好的降糖作用。  相似文献   

8.
人工虫草多糖降血糖作用及其机制研究   总被引:37,自引:0,他引:37       下载免费PDF全文
目的:研究人工虫草多糖的降血糖作用及其机制。方法:用正常小鼠和四氧嘧啶糖尿病小鼠模型,以血糖、糖化血清蛋白、糖耐量等为指标研究人工虫草多糖的降糖作用;用高浓度葡萄糖和胰岛素诱导脂肪细胞胰岛素抵抗模型,观察人工虫草多糖对葡萄糖摄取的影响。结果:人工虫草多糖对正常小鼠血糖水平无明显影响,但能显著降低四氧嘧啶糖尿病小鼠的血糖水平和糖基化血清蛋白含量,明显改善糖尿病小鼠的糖耐量,提高胰岛素抵抗脂肪细胞的葡萄糖摄取水平。结论:人工虫草多糖对糖尿病小鼠有较好的降糖作用,促进胰岛素抵抗脂肪组织的葡萄糖摄取可能是其降糖作用机制之一。  相似文献   

9.
目的:研究复原降糖胶囊的降血糖作用。方法:复原降糖胶囊灌胃给药研究其对四氧嘧啶型糖尿病大鼠的降血糖作用,研究其对正常大鼠血糖的影响,研究其对肾上腺高血糖小鼠的降血糖作用,研究其对四氧嘧啶糖尿病大鼠糖耐量的影响。结果:对四氧嘧啶型糖尿病大鼠具有显著的降血糖作用;对正常大鼠具有一定的降血糖作用;对肾上腺素高血糖小鼠具有显著降血糖作用;并显著提高四氧嘧啶型糖尿病大鼠的糖耐量。结论:扶元降糖胶囊具有显著降低实验性高血糖作用。  相似文献   

10.
目的:研究五味子不同提取成分对糖尿病小鼠血糖的影响。方法:选取五味子将其分为4份,分别经过水、乙酸乙酯、乙醇以及石油醚等4种不同溶剂,获得4种不同的提取成分,然后制作糖尿病小鼠模型。将70只小鼠分为正常对照组(9只)和糖尿病小鼠模型组(61只)。将建模成功的54只糖尿病小鼠模型随机分为糖尿病组、阳性对照组、水提取物组、乙酸乙酯提取物组、乙醇提取物组和石油醚提取物组,每组各9只。将不同的提取物分别给糖尿病小鼠灌下,观察不同组糖尿病小鼠的体重、饮食、饮水变化,并及时的测定糖尿病小鼠体内血糖以及胰岛素的水平,并进行比较分析。结果:这4种不同的提取物中,水提取物以及乙醇提取物可以明显降低小鼠的血糖,提高胰岛素的分泌水平;而乙酸乙酯提取物以及石油醚提取物改善糖尿病小鼠的效果不明显。水提取物和乙醇提取物相比较,在改善糖尿病小鼠方面,乙醇组小鼠表现的更好一些,但是这两者之间的差异不明显。结论:五味子不同提取成分对糖尿病小鼠血糖的影响具有差异性,水提取物以及乙醇提取物可明显的改善血糖变化,乙酸乙酯和石油醚的提取物对小鼠血糖的改善不明显。  相似文献   

11.
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   

12.
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   

13.
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   

14.
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   

15.
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   

16.
A clinical guideline for the therapeutic interventions of integrative medicine may be defined as a written document which states a series of recommendations on therapeutic interventions of integrative medicine for a special disease or condition. The guideline may provide assistance to medical professionals in making clinical decisions aimed at improving the clinical outcome of patients and reducing the costs of medical care(~'4~. Recommendations issued by a guideline should be based on the best available evidence in both Western and Chinese medicine. For fulfilling this purpose, the development of clinical guidelines for therapeutic interventions in the field of integrative medicine should follow scientific principles and undergo a rigorous processes.  相似文献   

17.
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   

18.
Journal of Nanjing Medical University (English Edition) JNMU, sponsored by Nanjing Medical University, was established in 1987. It is a bimonthly comprehensive English medical journal published locally and abroad.Since 2007, Journal of Nanjing Medical University (English Edition )was granted Elsevier the full publishing and distribution rights worldwide for the Electronic Edition, excluding the People's Republic of China.  相似文献   

19.
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   

20.
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   

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