“内关”穴位注射丹参液加维生素E抑制家兔力竭性运动时过氧化脂质升高     

俞旗  金文泉  陈元武  杨范昌 《成都体育学院学报》1990,(4)

自由基在许多生理,病理过程中有其特殊作用。实验发现在机体力竭性运动时,血液中LPO(过氧化脂质)有明显升高,并与机体疲劳有密切的内在关系。通过“内关”穴位注射丹參液加维生素E可抑制机体运动时LPO的升高。  相似文献   

Oxidative stress and damage induced by abnormal free radical reactions and IgA nephropathy     

Chen JX  Zhou JF  Shen HC 《Journal of Zhejiang University. Science. B》2005,6(1):61-68

Objective: To estimate the oxidative stress and oxidative damage induced by abnormal free radical reactions in IgA nephropathy (IgAN) patients' bodies. Methods: Seventy-two IgA N patients (IgANP) and 72 healthy adult volunteers (HAV) were enrolled in a random control study design, in which the levels of nitric oxide (NO) in plasma, lipoperoxide (LPO) in plasma and in erythrocytes, and vitamin C (VC), vitamin E (VE) and β-carotene (β-CAR) in plasma as well as the activities of superoxide dismutase (SOD), catalase (CAT) and glutathione peroxidase (GPX) in erythrocytes were determined with spectrophotometric mothods. Results: Compared with the HAV group, the averages of NO in plasma, and LPO in plasma and in erythrocytes in the IgANP group were significantly increased (P＜0.0001), while those ofVC, VE and β-CAR in plasma as well as those of SOD, CAT and GPX in erythrocytes in the IgANP group were significantly decreased (P＜0.0001). Linear correlation analysis showed that with the increase of the values of NO, and LPO in plasma and in erythrocytes, and with the decrease of those ofVC, VE, β-CAR,SOD, CAT and GPX in the IgAN patients, the degree of histological damage of tubulointerstitial regions was increased gradually (P＜0.0001); and that with the prolongation of the duration of disease the values of NO, and LPO in plasma and erythrocytes were increased gradually, while those of VC, VE, β-CAR, SOD, CAT and GPX were decreased gradually (P＜0.005). The discriminatory correct rates of the above biochemical parameters reflecting oxidative damage of the IgAN patients were 73.8%-92.5%, and the correct rates for the HAV were 70.0%-91.3% when independent discriminant analysis was used; and the correct rate for the IgAN patients was increased to 98.8%, the correct rate for the HAV was increased to 100% when stepwise discriminant analysis was used. The above biochemical parameters' reliability coefficient (alpha) were used to estimate the oxidative damage of the IgAN patients as 0.8145, the standardized item alpha=0.9730, F=53273.5681, P＜0.0001. Conclusions: A series of free radical chain reactions caused serious pathological aggravation in the IgANP' bodies, thus resulting in oxidative damage in their bodies. In treating IgANP, therefore, it is necessary that suitable dose antioxidants should be supplemented to them so as to alleviate the oxidative damage in their bodies.  相似文献   

过氧化铬法Cr^3＋鉴定方法的研究     

罗永刚 《楚雄师专学报》2000,15(3):98-99

本文讨论了用过氧化铬法鉴定Cr^3 ，现象不稳定，易失败的原因。通过实验改进，使Cr^3 鉴定实验的成功率达100％。  相似文献   

γ-十一内酯的合成研究   总被引：2，自引：0，他引：2  

张富捐  王经亚  张翔宇 《许昌学院学报》2005,24(2):121-123

以过氧化二特丁基为催化剂，通过丙烯酸甲酯和正辛醇反应合成γ-十一内酯、研究了各有关因素对产品收率的影响，合理的反应务件为：反应温度180℃，回流反应时间4h，酯醇物质的量比为1：7，催化剂用量为0．8％(相对于反应物总质量)．在此务件下，γ-十一内酯的收率可达65.2％。  相似文献   

人为什么不能呼吸纯氧     

《中学生理科月刊》2003,17(7):83-83

  相似文献   

长循环固体脂质纳米粒给药系统研究新进展     

滕坤  张海丰 《通化师范学院学报》2006,27(4):58-60

长循环固体脂质纳米粒是近年正在发展的一种新型毫微粒类给药系统.以固态的天然或合成的类脂,如卵磷脂、三酰甘油等为载体,将药物包裹于类脂核中,制成粒径为50~1000nm的固态胶体给药系统,静脉注射给药后,能够躲避MPS(mono nuclearphagocytic system)的摄取[1]·同时,也可对非MP  相似文献   

影响北方馒头品质的主要因素分析     

吕滨 《黑龙江科技信息》2007,(8S):2-2

馒头是北方的传统面食之一。对影响北方馒头品质的主要因素,包括小麦面粉中蛋白质质量量、淀粉质量、面粉拉度、酶、加水量等各因素进行了较为详细的论述。  相似文献   

白饭树水提物对实验性肝损伤的保护作用     

许实波  王正濂  赵金华 《中山大学学报论丛》1994,(6)

白饭树(Flugea virose(Roxb ex willd) Baill [F, mierocarna Bl.])水提物对CCl_4造成的小鼠、大鼠急性肝损伤具有明显的保护作用,可使中毒鼠血清中GPT,GOT,ALP,LDH等酶的含量显著下降或趋于正常;对CCl_4所致肝脏脂质过氧化作用具明显的缓解作用,并提高CCl_4损伤肝的解毒能力.  相似文献   

海兔卵提取物抗肿瘤抗氧化的药理研究     

洪生勤  胡惠金  李艳青  许实波  陈木松 《中山大学学报论丛》1995,(3)

海兔卵乙醇提取物和水提取物均对小鼠的心、肝、紧具有明显的抗脂质过氧化作用，两种提取物均有抑制肉瘤180的瘤体重量，其中乙醇提取物均增加EAC腹水瘤小鼠的存活率、延长小鼠的生命，且乙醇提取物高剂量组的作用有显著性差异．  相似文献   

人从小到老喝小分子水好     

陆江 《科学中国人》2005,(5):59-59

婴儿吃饱乳汁会笑，饿时哭闹。人的天性爱吃饱，吃饱是生理需要。人们从小到老一般不肯让肚子空着，饥饿觉寒冷，吃饱能驱寒，加上人吃肉类和多脂食品时有快感，更难拒美味佳肴，所以很多人从食物中摄取的热量供大于求，超过发育生长和活动的需要。因而动脉中的脂质沉着从婴幼儿时期就已开始。根据前苏联科学家对动脉粥样硬化症研究的专著，从人类的解剖资料看，满一岁的婴儿尸体动脉中就有脂点、脂纹；  相似文献