不同负荷训练对大鼠骨骼肌细胞膜自由基代谢、膜流动性及Na~+-K~+-ATP酶活性的影响   总被引：4，自引：0，他引：4  

潘玮敏  杨建昌 《西安体育学院学报》2004,21(3):51-53,57

探讨不同负荷游泳训练对大鼠骨骼肌细胞膜结构和功能的影响。分别测试不同负荷下膜的抗氧化酶SOD、膜脂质过氧化产物MDA、膜荧光偏振度(P)及膜Na+-K+-ATP酶活性的变化。与对照组相比,小负荷训练组骨骼肌细胞膜P值降低,膜SOD活性、Na+-K+-ATP酶活性提高,膜上MDA含量则降低;大负荷训练组较小负荷组肌膜P值增加,膜SOD活性、Na+-K+-ATP酶活性下降。适宜负荷训练可以提高骨骼肌细胞膜的抗氧化能力,改善膜脂的流动性,使膜Na+-K+-ATP酶活性增强,而过大负荷训练则使骨骼肌细胞膜的抗氧化能力、膜脂的流动性及膜酶活性降低。  相似文献   

膜法回收丁二烯和氮气混合气相的研究与应用     

张为民 《岳阳职业技术学院学报》2011,26(1):76-80

为了回收丁二烯槽车余气,提高氮气和丁二烯的使用效率,能减少环境污染,笔者在通过现状调研的基础上,对有机蒸汽膜分离的机理进行了研究,并设计膜分离装置的工艺路线,通过技术改造,回收的氮气纯度达到95%,丁二烯的回收率达到90%以上。  相似文献   

复元液合剂对单纯性肥胖大鼠减脂降重提高体能的研究   总被引：2，自引：0，他引：2  

苏全生  周卫平  熊若虹  袁琼嘉  郑兵 《成都体育学院学报》2003,29(5):80-83

将单纯性肥胖大鼠随机分为运动用药组(A组)、单纯运动组(B组)、单纯用药组(C组)和肥胖对照组(D组),同时设空白对照组为E组,经5周实验后,A组、B组和C组平均体重、体重增长值显著低于D组,体重增长平均值显著地低于E组;A、B、C三组大鼠总脂肪垫显著低于D组;A、B、C组的Lee's指数显著低于D组;A组、C组和B组的甘油三酯显著低于D组,A、C组的胆固醇显著地低于B组,后者还低于D组;C组的血睾酮水平显著地高于其它任何一组。  相似文献   

运动锻炼对中老年知识分子血脂水平的影响   总被引：2，自引：0，他引：2  

李文杰  张伟 《湖北体育科技》1996,(4)

本文检测了中老年知识分子中锻炼组与非锻炼组两组人群的血脂水平，发现两组人群血脂各项指标差异显著，揭示了运动锻炼是降低血脂水平，预防心血管疾病发生的有效手段。  相似文献   

花粉片与花粉营养液降血脂作用的研究     

尹渭元  卢凤英 《科技通报》1994,10(3):182-185

进行了花粉保健食品花粉片与花粉营养液的动物与临床实验研究，结果表明，花粉片与花粉营养液有明显的降脂作用及抗动脉粥样硬化作用；该产品作为天然保健食品，具有多种营养与保健功能，并有预防中老年人动脉粥样硬化性心脑血管疾病的作用．  相似文献   

Changes in erythrocyte membrane glycoproteins during leukaemia     

Kiran Hasija 《Indian journal of clinical biochemistry : IJCB》2002,17(1):12-19

Changes in erythrocyte membrane glycoproteins during, leukaemia were investigated in one hundred patients. Control group contained normal ones. The total protein and protein bound total carbohydrates (neutral sugars) in the glycoproteins extracted from the erythrocyte membrane showed significant reduction in total protein and protein bound total carbohydrates before radiotherapy. However, after the radiotherapy there was further reduction in total protein by 10.41% whereas there was increase in total carbohydrates by 9.98%. Qualitative analysis reveals that with the help of lectins one can pin point the sugars which appear or disappear due to leukaemia. The test could be of a diagnostic value.  相似文献   

壳聚糖/D-氨基葡萄糖盐酸盐膜的制备和表征     

吴海若 《科技通报》2007,23(4):498-501

D-氨基葡萄糖盐酸盐和壳聚糖都为甲壳素的衍生物，两者具有良好的相容性，并且D-氨基葡萄糖盐酸盐具有抗炎、抗反应性等作用，通过两者共混期望减少膜植入后引起的炎症。实验表明，加入D-氨基葡萄糖盐酸盐后的壳聚糖基膜的降解速度大大提高，比壳聚糖／明胶膜的降解要快。  相似文献   

膜蛋白三维结构研究的新突破——线粒体呼吸链膜蛋白复合物II结构解析          下载免费PDF全文

孙飞  饶子和 《中国科学院院刊》2005,20(5):381-384

由清华大学-中科院生物物理所结构生物学联合研究小组完成的"线粒体呼吸链膜蛋白复合物Ⅱ的晶体结构"研究成果以Article的方式发表在2005年7月1日出版的Cell上.本文介绍了该项成果的研究背景、意义、主要创新点及方法.  相似文献   

肥胖儿童少年血脂、红细胞膜脂及PS外翻的研究     

赖爱萍 《浙江体育科学》2011,33(4)

目的：通过对肥胖儿童少年血脂及红细胞膜脂及磷脂酰丝氨酸（PS）外翻的研究,探讨肥胖对儿童少年脂代谢的影响,为早期监测儿童少年脂代谢紊乱提供理论依据。方法：64名肥胖儿童少年按体脂百分比分为轻度、中度和重度3组,测定其血脂六项、红细胞膜胆固醇、PS外翻量及膜Na＋K＋-ATPase和Ca2＋Mg2＋-ATPase活性。结果：①肥胖儿童少年的TC水平已超过参考标准的理想水平;②肥胖儿童少年血TG与BMI及WC、WHR明显正相关,其中和前两项指标显著性P≤0.01;③轻度肥胖组PS外翻量与其他两组肥胖者之间存在显著性差异（P≤0.05）,HDL仅在轻度肥胖者和重度肥胖者之间存在显著性差异。结论：肥胖儿童少年血脂出现紊乱的潜在可能,PS外翻异常可能比血脂指标更早表现出来,因此对儿童少年肥胖发展的预测和预防可能会有更大的价值。  相似文献   

Mechanism of Antidiabetic Action of Compound GII Purified from Fenugreek (<Emphasis Type="Italic">Trigonella foenum graecum</Emphasis>) Seeds     

D. Puri  K. M. Prabhu  G. Dev  S. Agarwal  P. S. Murthy 《Indian journal of clinical biochemistry : IJCB》2011,26(4):335-346

To study the mechanism of action of water soluble compound GII purified from fenugreek (Trigonella foenum graecum) seeds which was shown earlier to have antidiabetic effect in the subdiabetic, moderately and severely diabetic rabbits. In rabbits (1–1.5 kg bw) diabetes was induced by intravenous injection of 80 mg/kg bw of alloxan. They were fed with GII at a dose of 50 mg/kg bw daily once in the morning for 15 days in the subdiabetic and moderately diabetic and 30 days in the severely diabetic rabbits. Serum total cholesterol (TC), triglycerides (TG), LDL + VLDL cholesterol [(LDL + VLDL)C], HDL cholesterol [(HDL)C], total tissue lipids, glycogen and enzymes of carbohydrate metabolism (glycolysis, gluconeogenesis, polyol pathway) hexokinase, glucokinase, pyruvate kinase, malic enzyme, glucose-6-phosphatase, glucose-6-phosphate dehydrogenase, aldose reductase and sorbitol dehydrogenase and antioxidant enzymes glutathione peroxidase, glutathione reductase and superoxide dismutase were estimated. Liver and kidney function parameters were also estimated. Treatment with GII for 15 days in the subdiabetic and moderately diabetic rabbits and for 30 days in the severely diabetic rabbits (i) decreased the elevated lipids TC, TG, (LDL + VLDL)C and increased the decreased (HDL)C, (ii) decreased the elevated liver and heart total lipids, TC and TG, (iii) increased the decreased liver and muscle glycogen, (iv) increased the decreased hexokinase, glucokinase, pyruvate kinase, malic enzyme, glucose-6-phosphate dehydrogenase, superoxide dismutase, glutathione peroxidase, (v) decreased the increased glucose-6-phosphatase, sorbitol dehydrogenase, aldose reductase. Results thus show that treatment with GII compound purified from fenugreek seeds for 15 days in the subdiabetic and moderately diabetic and 30 days in the severely diabetic rabbits corrects the altered serum lipids, tissue lipids, glycogen, enzymes of glycolysis, gluconeogenesis, glycogen metabolism, polyol pathway and antioxidant enzymes. Histopathological abnormalities (fatty infiltration and other cellular changes) seen in the pancreas, liver, heart and kidneys were repaired after treatment with GII. In fact partially damaged pancreas was repaired. Liver and kidney function test results were normal in the GII treated animals indicating that GII treatment is safe and free from any side effects.  相似文献