老年脑梗死患者部分氧化和抗氧化指标检测及其临床意义

目的 探讨一氧化氮、氧化、脂质过氧化与老年脑梗死的关系及其临床意义。方法 检测了106例老年急性脑梗死患者治疗前后和100例健康老年人的血浆一氧化氮（P－NO）、维生素C（P－VC）、维生素E（P－VE）、β－胡萝卜素（P－β－C）和过氧化脂质（P－LPO）含量及红细胞过氧化脂质（E－LPO）含量并作分析比较。结果 与对照组比较，患者组治疗前P－NO、P－LPO、E－LPO含量均升高（均P＜0.01），P－VC、P－VE、P－β－C均降低（均P＜0.01)。与治疗前比较，患者组治疗后P－NO、P－LPO、E－LPO含量均降低（P＜0.01-0.05)，P－VC、P-VE、P－β－C含量均升高（P＜0.01-0.05)，但与对照组比较情况则同治疗前类似。结论 老年脑梗死患者体内NO代谢异常，一系列自由基连锁反应病理性加剧，氧化抗氧化平衡失调，氧化和脂质过氧化损伤加剧。     

狼疮性肾炎中GSTμ基因缺失与氧化损伤的关系

目的：探讨狼疮性肾炎（LN）患者谷胱甘肽转移酶μ（GSTμ）基因缺失与氧化损伤的关系。方法：应用化学分析法检测51例LN患者和40例健康对照者血中一氧化氮（NO），脂质过氧化物（LPO），超氧化物歧化酶（SOD），谷胱甘肽过氧化物酶（GSH-px)和谷胱甘肽（GSH），用PCR法检测GSTμ基因。结果：LN组NO，LPO明显增高，SOD，GSH-px，GSH明显降低，NO与LPO呈显著正相关，与SOD，GSH-px,GSH呈显著负相关，NO，LPO与补体3（G3）呈显著负相关，与抗ds-DNA，血清γ球蛋白呈显著正相关，SOD，GSH-px,GSH与C3呈显著正相关，与抗ds-DNA，血清γ球蛋白呈显著负相关，LN组GSTμ基因缺失率达70.59%，明显高于对照组（47.50%)。GSTμ基因缺失的LN患者与GSTμ基因携带的LN患者比较，LPO明显增高，SOD，GSH-px,GSH明显降低。结论：LN患者存在氧化损伤和抗氧化能力降低。GSTμ基因缺失的LN患者更严重。GSTμ基因缺失可能是LN的易患因素之一。提示LN患者应给予抗氧化治疗。     

颅脑损伤患者自由基水平变化与氦氖激光血管内照射的临床研究

目的通过观察自由基水平变化探讨急性颅脑损伤患者氦氖激光治疗的疗效。方法按照Sun改良的肾上腺素自氧化法及Uchiyama的双波长测定法,分别动态测定40例对照组和47例低能量氦氖激光血管内照射（ILIB）组患者血浆红细胞超氧化物歧化酶（SOD）和血浆脂质过氧化物（LPO）含量。结果治疗组LPO含量伤后第10d明显低于对照组（P＜0.05）;SOD活性伤后第1、5、10d明显高于对照组（P＜0、05）。结论ILIB疗法能使机体清除自由基能力增加,从而减轻急性颅脑损伤患者的继发性病理生理损害。     

阿魏酸钠对动脉粥样硬化鹌鹑血中NO、LPO及SOD生成的影响

目的 :观察阿魏酸钠对实验性动脉粥样硬化鹌鹑血中一氧化氮 (NO)、脂质过氧化物 (LPO)水平及超氧化物歧化酶 (SOD)活性的影响。方法 :实验分为正常对照组、高脂组和高脂 +阿魏酸钠组 ,9周后分别测定各组血浆中总胆固醇 (T ch)、NO和LPO含量及红细胞SOD比活性。结果 :高脂组与正常组相比 ,血浆T ch及LPO含量显著升高 (P均 <0 .0 1) ,血浆NO含量和红细胞SOD比活性明显降低 (P均 <0 .0 1) ;而阿魏酸钠有显著降低实验性动脉粥样硬化鹌鹑血浆T ch和LPO水平、升高血浆NO含量和红细胞SOD比活性的作用。结论 :阿魏酸钠有清除自由基和减轻膜脂质过氧化的作用     

原发性高血压患者血浆一氧化氮和红细胞内皮型一氧化氮合酶的改变

目的探究原发性高血压患者血清一氧化氮（No）及红细胞内皮型一氧化氮合酶（eNOS）的变化。方法原发性高血压组和对照组各20例，清晨采集静脉血，测定血浆NO及羟自由基含量、虹细胞eNOS活性及蛋白表达。结果与对照组比较，高血压组血浆NO，缸细胞eNOS活性虹细胞eNOS活性及蛋白表达均显著降低（P〈o．05-0．01），血浆羟自由基显著升高（P〈0．01）。结论高血压患者血浆NO减少可能与氧自由基破坏增加以及缸细胞eNOS-NO合成系统受损有关。     

糖尿病患者红细胞膜甘油磷脂成分的改变与脂质过氧化物的关系

对38例糖尿病患者及35例正常人对照组进行红细胞膜甘油磷脂的检测，同时测定了血浆脂质过氧化物（LPO）水平；全血谷胱甘肽过氧化物酶（GSHPX）及红细胞超氧化物歧化酶（SOD）活性测定。糖尿病组甘油磷脂显著低于对照组，血浆LPO水平明显高于对照组，红细胞SOD、GSHPX活性显著低于对照组。结果提示糖尿病红细胞膜磷脂成分的改变与自由基有关。     

醒脑静对一氧化碳中毒患者的临床疗效及血浆氧自由基的影响

目的观察醒脑静注射液治疗一氧化碳（CO）中毒患者的临床疗效及对血浆中一氧化氟（NO）、过氧化脂质（LPO）及超氧化物歧化酶（SOD）的影响。方法选择96例CO中毒患者根据临床症状随机分为醒脑静治疗组（下称治疗组）和对照组,治疗组在入院后给予醒脑静注射液20ml～40ml每天1～2次,疗程为10～14d,分别于治疗前、后检测血浆NO、LPO和SOD含量,并观察临床症状及体征的变化。结果治疗组48例治愈33例,有效12例总有效率为93．8％,对照组48治愈30例,有效9例,总有效率为81．3％,两组比较治疗组明显优于对照组（P〈0．05）,两组治疗后LPO均明显降低,两组比较治疗组明显优于对照组（P〈0．01）,NO、SOD均明显升高,两组比较治疗组明显优于对照组（P〈0．01）。结论醒脑静注射液对CO中毒患者有明显临床疗效,并有清除氧自由基作用,减轻氧自由基对脑细胞的损伤,降低迟发性脑病的发病率,因此。对重度CO中毒患者,可常规应用醒脑静注射液治疗。     

生精冲剂对精索静脉曲张大鼠睾丸组织抗过氧化损伤的实验研究

目的　探讨生精冲剂对精索静脉曲张睾丸中超氧化物歧化酶 (SOD)、过氧化氢酶 (CAT)、血管紧张素转化酶 (ACE)活性及脂质过氧化物 (LPO)、一氧化氮 (NO)含量的影响。方法　测定治疗组大鼠睾丸中SOD、CAT、ACE活性及LPO、NO含量与模型组的差别。结果　治疗组大鼠睾丸中SOD、CAT、ACE活性高于模型组 ,LPO、NO含量低于对照组 (P <0 0 1)。结论　生精冲剂对精索静脉曲张生成的睾丸脂质过氧化损伤具有保护作用     

赤阳子对老龄大鼠机体SOD及LPO的影响

观察给予赤阳子对大鼠红细胞和组织中超氧化物歧化酶（SOD）活性及血清和组织中过氧化脂质（LPO）含量的影响。利用邻苯三酚自氧化法测定SOD；硫代巴比妥酸（TBA）比色法测定LPO含量、结果表明，给赤阳子组SOD活性比对照组有显著提高，而LPO含量显著降低。说明具有一定的抗衰老作用。     

大豆异黄酮的抗氧化作用

作者观察大豆异黄酮提取物（SIE）对阿霉素（ADR）引起小鼠过氧化损伤的抗氧化作用。小鼠每4d腹腔注射ADR5mg／kg，连续4次，制备小鼠高过氧化病理模型，同时口服SIE，连续14d。结果SIE200mg／kg组小鼠红细胞、肝脏和心肌SOD活性分别提高97．0％、42．0％和97．0％（P均＜0．01）。心肌GSH-pX活性提高122．3％，肝脏GSH增加69．0％，血浆、肝脏和心脏的LPO水平分别下降26．5％、20．1％和17．9％（P均＜0．01）。50mg／kg组红细胞、肝脏和心肌的SD活性分别提高88．0％、33．0％和46．0％，心肌GSH-pX活性提高99．4％，肝脏GSH提高44．0％（P＜0．01），血浆、肝脏和心脏LPO水平降低12．6％（P＜0．05）、4．4％（P＞0．05）和15．4％（P＜0．05）。并且心肌细胞病理损伤程度也明显减轻。结果表明，大豆异黄酮对小鼠过氧化损伤有较强的抗氧化作用。     

Oxidative Stress in Patients With Acute Coxsackie Virus Myocarditis

To study the state of oxidative stress in patients with acute coxsackie virus myocarditis (ACM), and to investigate the pathological chain reactions of a series of free radicals and oxidative and lipoperoxidative damages in their bodies. Methods Eighty ACM patients and 80 healthy adult volunteers (HAV) were enrolled in a case-control study, in which concentrations of nitric oxide (NO) in plasma, lipoperoxides (LPO) in plasma and LPO in erythrocytes (RBC), vitamin C (VC), vitamin E (VE) and β-carotene (β-CAR) in plasma as well as activities of superoxide dismutase (SOD), catalase (CAT) and glutathione peroxidase (GSH-Px) in RBC were determined by using spectrophotometric assays. Results Compared with the average values (AV) of the above biochemical parameters (BP) in the HAV group, the AV of NO in plasma, and LPO in plasma and RBC in the ACM group were significantly increased (P=0.0001), while the AV of VC, VE, β-CAR, SOD, CAT and GSH-Px in the ACM group were significantly decreased (P=0.0001). The values of the above BP were used to estimate the relative risk ratio (RR) between the ACM group and the HAY group; the RR and its 95 % confidence interval were 12.467 (5.745～27.051), 4.333(2.126～8.834), 6.517 (3.225～13.618), 3.310 (1.598～6.858), 31.000 (12.611～76.201),4.663 (2.228～9.759), 11.769 (5.440～25.462), 3.043 (1.486～6.229) and 6.594 (3.045～14.281)respectively, and their P levels ranged from 0.002 to 0.0001. The results were asfollows: D = 22.143 - 0.017SOD + 0.008NO + 0.244LPO in RBC, Eigenvalue = 13.659,Canonical correlation = 0.965, Wilks' λ = 0.068, χ2 = 420.212, P = 0.0001. The correct rate of discrimination to the ACM group and to the HAV group was 87.5% and 95.0 %, respectively,and 91.3 % of originally grouped cases was correctly classified. Conclusion The findings in this study suggested that the oxidative stress in bodies of ACM patients was severely aggravated, and marked high oxidative constituents and low antioxidants and antioxidases in the human body might increase the relative risk of inducing acute coxsackie virus myocarditis, and measuring the values of NO in plasma, SOD and LPO in RBC might increase the correct rates of discriminatory analysis of the ACM.     

Abnormal metabolism of nitric oxide, oxidative stress and lipoperoxidative stress in patients with acute viral myocarditis

Objective To investigate metabolic status of nitric oxide (NO) as well as oxidative and li poperoxidative stress, pathological chain reactions of a series of free radicals , and oxidative and lipoperoxidative damages in patients with acute viral myocar ditis (AVM). Methods Using a random paired control design, plasma levels of NO, lipoperoxides (LPO), vitamin C (VC), vitamin E (VE) and β- carotene (β- CAR), erythrocytic level of LPO as well as activities of erythrocytic superoxide dismutase (SOD), catalase (CAT) and glutathione peroxidase (GSH- Px) were investigated by spectrophotometr ic assays in 60 AVM patients and 60 healthy adult volunteers (HAV). Results Compared with the HAV group, plasma NO, and LPO in plasma and in erythrocyte of the AVM group significantly increased (P=0. 0001), while VC, VE, β- CAR, SO D, CAT and GSH- Px of the AVM group significantly decreased (P=0. 0001). Co mpared with the AVM group before treatment, plasma NO, and LPO in plasma and in erythrocyte of the AVM group post treatment significantly decreased (P&lt;0. 05 ), whereas plasma VC, VE and β- CAR as well as erythrocytic SOD, CAT and GSH- P x of the AVM group post treatment significantly increased (P&lt;0. 05). Conclusion The findings in this study suggested that in the AVM patients the metabolism of NO was disturbed, and the pathological chain reactions of a series of free radic als were severely aggravated, thus produced the oxidative damage and lipoperoxid ative damages. Therefore, we recommend that antioxidants at suitable dosage, su ch as VC, VE, β- CAR and others, should be given to AVM patients daily to allev iate potential oxidative and lipoperoxidative damages in their bodies.     

Relationship between Acute Organophosphorus Pesticide Poisoning and Damages Induced by Free Radicals

~~ Relationship between Acute Organophosphorus Pesticide Poisoning and Damages Induced by Free Radicals~~     

Relationship between Acute Organophosphours Pesticide Poisoning and Damages Induced by Free Radicals

Objective To study the relationship between abnormal reactions of free radicals in bodies of patients with acute organophosphorus pesticide poisoning (AOPP) and damages induced by free radicals. Methods 58 AOPP patients and 58 healthy adult volunteers (HAV) were enrolled in an independent samples control design, in which spectrophotometric methods were used to determine the concentrations of nitric oxide (NO) and lipoperoxides (LPO) in plasma, and LPO in erythrocytes, vitamin C (VC), vitamin E (VE) and b-carotene (b-CAR) in plasma as well as activities of superoxide dismutase (SOD), catalase (CAT), glutathione peroxidase (GSH-Px) and acetylcholinesterase (AChE) in erythrocytes. Results Compared with the average values of every biochemical parameter in the HAV group, the average values of LPO in plasma and in erythrocytes, and NO in plasma in the AOPP group were significantly increased (P=0.000001), while the average values of VC, VE, a-CAR in plasma as well as SOD, CAT, GSH-Px and AChE in erythrocytes in the AOPP group were significantly decreased (P=0.000001). The findings of Pearson product-moment correlation analysis between the value of AChE in erythrocytes and the values of above biochemical parameters for 58 AOPP patients showed that there was a significant linear negative correlation between AChE in erythrocytes and LPO, NO in plasma, and LPO in erythrocytes (P=0.000001～0.001319), while there was a significant linear positive correlation between AChE in erythrocytes and VC, VE, a-CAR in plasma as well as SOD, CAT, GSH-Px in erythrocytes (P=0.000013～0.000824). The results of discriminant analysis of above chemical parameters for 58 AOPP patients and 58 HAV suggested that the correct rates of discriminant analysis were increased to 100 % when the values of AChE and LPO in plasma and in erythrocytes, or AChE and others, were jointly used for the discriminant analysis. Conclusion The findings of the present study suggest that a series of free radical reactions in AOPP patients' bodies are pathologically aggravated, and the discriminant analysis used the above biochemical parameters could markedly increase its correct rates for AOPP patients.     

Abnormal reactions of free radicals and oxidative damages in the bodies of patients with chronic glomerulonephritis

Objective To study the abnormal reactions of a series of free radicals and the oxidative damages induced by free radical abnormal reactions in the bodies of patients with chronic glomerulonephritis. Methods Eighty chronic glomerulonephritis patients (CGNP) and eighty healthy adult volunteers (HAV) were enrolled in a random control study, in which concentrations of nitric oxide (NO) in plasma, lipoperoxides (LPO) in plasma and in erythrocytes, and vitamin C (VC),vitamin E (VE) and beta-carotene (β-CAR) in plasma as well as activities of superoxide dismutase (SOD), catalase (CAT) and glutathione peroxidase (GPX) in erythrocytes were determined with spectrophotometric assays. Results Compared with the average values of the above biochemical parameters in the HAV group, the average values of NO in plasma, and LPO in plasma and erythrocytes in the CGNP group were significantly increased (P = 0.0001), while those of VC, VE and β-CAR in plasma as well as those of SOD, CAT and GPX in erythrocytes in the CGNP group were significantly decreased (P = 0.0001). Pearson product-moment correlation analysis showed that with increase of the concentration of blood creatinine as well as prolongation of the course of disease in the CGNP, the concentrations of NO in plasma, and LPO in plasma and erythrocytes in the CGNP increased gradually, while the concentrations of VC, VE and β-CAR in plasma as well as the activities of SOD, CAT and GPX in erythrocytes in the CGNP decreased gradually (P = 0.002454 - 0.000001).The relative risk ratio (RR) of the above biochemical parameters reflecting oxidative damages in the bodies of CGNP ranged from 6.061 to 72.429. The reliability coefficient (alpha) that the above biochemical parameters were used to reflect the oxidative damages of the CGNP was 0.8137,standardized item alpha = 0.9728, Hotelling's T-Squared = 1135680.191, F = 53274.6478, P =0.000001. Conclusions The findings irt this study show that in the bodies of CGNP a series of free radical chain reactions result in severe pathological aggravation and induce oxidative damages in their bodies. Therefore, suitable dose of antioxidants should be supplemented to them so as to alleviate oxidative damages in their bodies.     

Oxidative stress before and after operation in patients with chronic cholecystitis containing gallstone

To study the relationship of oxidative, antioxidative constituents and antioxidases in blood with chronic cholecystitis containing gallstone, levels of lipoperoxides (LPO), nitric oxide (NO), vitamin C(VC), vitamin E (VE) and beta-carotene (beta-CAR) in plasma as well as level of LPO, activities of superoxide dismulase (SOD), catalase (CAT) and glutathione peroxidase (GSH-Px) in erythrocytes were investigated by spectrophotometric assay in 107 patients with this condition (PCg) and 100 healthy volunteers (HVs). Compared with HVs group, the average value of LPO and NO in plasma and that of LPO in erythrocytes of PCg group were significantly increased (P < 0.0001), while that of VC, VE and beta-CAR in plasma and the average activities of SOD, CAT and GSH-Px in erythrocytes were significantly decreased (P < 0.0001). Linear regression and correlation analysis for 107 preoperative PCg showed that the value of LPO and NO in plasma and that of LPO in erythrocytes of PCg gradually increased (P < 0.0001), representing a significant linear positive correlation. The value of VC, VE and beta-CAR in plasma and that of SOD, CAT and GSH-Px in erythrocytes of PCg gradually decreased (P < 0.0001), representing a significant linear negative correlation. Stepwise regression and correlation analysis for 107 preoperative PCg suggested that the closest correlation was observed between the course of disease and the value of NO and VC in plasma and that of SOD, GSH-Px and LPO in erythrocytes, r = 0.7306, F = 32.1408, P < 0.0001. Compared with the preoperative PCg group, the average value of LPO and NO in plasma and that of LPO in erythrocytes of the postoperative PCg group were significantly decreased (P < 0.0001). Furthermore, the average value of VC in plasma and that of SOD, CAT and GSH-Px in erythrocytes of the postoperative PCg group were significantly increased (P < 0.0001), whereas no significant difference was found between their average value of VE and beta-CAR in plasma. These findings suggested that oxidative stress was an aggravating pathological condition in PCg group. Therefore, we recommend that in treating PCg, antioxidants such as VC, VE, beta-CAR should be given in order to alleviate their potential oxidative damages.     

Oxidative Stress before and after Operation in Patients with Chronic Cholecystitis Containing Gallstone

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Ozone Emitted During Copying Process -A Potential Cause of Pathological Oxidative Stress and Potential Oxidative Damage in the Bodies of Operators

INTRODUCTION Copying of references, documents, information and photos plays important roles in social, economic, business, scientific and technological affairs, however, photochemical smog emitted during this process may become risk factors inducing potential oxidative 1Correspondence should be addressed to Prof. Jun-Fu ZHOU, Second Affiliated Hospital of College of Medicine, Zhejiang University, 88 Jiefang R…     

Low Cholesterol in Erythrocyte Membranes and High Lipoperoxides in Erythrocytes Are the Potential Risk Factors for Cerebral Hemorrhagic Stroke in Human

Objective:To explore the association of risk for human cerebral hemorrhage with blood cholesterol,free radicals,oxidatation and lipoperoxidation,Methods:351 cerebral hemorrhage patients(CHP) in the acute phase and 100 healthy adult volunteers(HVA) were investigated by testing the contents of cholesterol(CH),lipoperoxides(LPO),nitric oxide(NO),vitamin C(VC)and vitamin E(VE) and activities of superoxide dismutase(SOD) in plasma and erythrocytes (RBC),and by assessing the contents of CH and LPO in RBC with spectrophotometric assays.Results:Compared with the average vlaues(AV) of the above biochemical parameters(BP)in the HAV group,the AV of CH in plasma and RBC,VC and VE in plasma as well as SOD in plasma and RBC in the CHP group were significantly decreased(P=0.000),while the AV of the LPO in plasma and RBC as well as NO in plasma in the CHP group were significantly increased(P=0,0000),The findings of linear correlation analysis for the CHP group showed that the above biochemical parameters were significantly correlated with both intracraial hemorrhagic sized(IHS) and neurotic functional defective scales(NDS).The findings of stepwise correlation analysis for the CHA group suggested that HIS was closely correlated with the values of CH and LPO in RBC as well as NO and VE in plasma,and that NDS was closely correlated with the values of CH and LPO in RBC as well as NO and VC in plasma.Conclusions:The findings of the present study suggest that marked low RBC cholesterol and marked high RBC lipoperoxides may constitute the potential main risk factors for human cerebral hemorrhage,and that the oxidative and lipoperoxidative stress in the CHP bodies is pathologically aggravated.leading to the oxidative and lipoperoxidative damages in the CHP.     

Oxidative stress and free radical damage in patients with acute dipterex poisoning

Objective To investigate whether acute dipterex poisoning (ADP) may cause oxidative stress and free radical damage in the bodies of acute dipterex poisoning patients (ADPPs), and to explore the mechanisms by which ADP may cause oxidative stress and free radical damage. Methods Fifty ADPPs and fifty healthy adult volunteers (HAVs) whose ages, gender and others were matched with the ADPPs were enrolled in a randomized controlled study, in which concentrations of nitric oxide (NO), vitamin C (VC), vitamin E (VE) and P-carotene (P-CAR) in plasma as well as concentration of lipoperoxide (LPO), and activities of superoxide dismutase (SOD), catalase (CAT), glutathione peroxidase (GPX) and acetylcholinesterase (AChE) in erythrocytes were determined by spectrophotometric analytical methods. Results Compared with the average values of experimental parameters in the HAVs group, the average values of plasma NO and erythrocyte LPO in the ADPPs group were significantly increased (P<0.0001), while those of plasma VC,