骨肿瘤患者LPO,SOD与GSH-PX变化的研究

对72例骨肿瘤,30例非瘤骨疾病患者血清脂质过氧化物(LPO)含量和全血超氧化物歧化酶(SOD)、谷胱甘肽过氧化物酶(GSH-PX)活性的测定,并与60例正常对照组比较、显示LPO在非瘤骨病组、良性骨肿瘤、恶性骨肿瘤组呈逐渐增高趋势(P<0.05)。SOD活性在骨肿瘤组明显低于对照组与非瘤骨病组(P<0.05～0.01),恶性骨肿瘤又低于良性骨肿瘤组(P<0.01)。作者认为在恶性骨肿瘤患者测定SOD活性和SOD/LPO比值有一定的临床参考价值。     

血液透析对肾功能衰竭患者抗氧化酶活性及过氧化脂质含量影响和分析

本文报道50例肾功能衰竭患者,在应用体外血液透析治疗前后分别观察血浆中过氧化脂质(LPO)及血浆中超氧化物歧化酶(SOD)的活力、红细胞中LPO、SOD值、过氧化氢酶(CAT)活力及全血中谷胱甘肽过氧化物酶(GSH--PX)活性变化情况。结果表明:透析前与透析后相比,血浆中LPO由5.23±2.53nmol/ml降至4.80±1.26nmol/ml(P<0.01),SOD由109.60±15.80NU/ml升至120.30±14.30NU/ml(P<0.01);红细胞中LPO由7.38±3.70nmol/ml降至6.08±1.40nmol/ml(P<0.05),SOD881.30±186.60NU/gHb升至1035±218.50NU/gHb(P<0.01),CTA由15.60±2.60U/mgHb升至17.20±2.10U/mgHb(P<0.01);全血GSH—PX由162.50±25.80NU/ml升至209.40±41.90NU/ml(P<0.01)。肾功能衰竭患者经体外血液透析后使人体的抗氧化能力增强,达到保护细胞功能作用。     

吸烟对氧自由基及抗氧化酶活性影响的研究

目的　探讨吸烟与氧自由基（OFR）及抗氧化酶活性的关系。方法　对216例健康吸烟者血清过氧化脂质(LPO)含量、超氧化物歧化酶(SOD)、谷胱苷肽过氧化物酶（GSH-PX）活性进行检测，并进行对比分析。结果　吸烟组LPO为(5.87±1.23umol/L)，SOD为(88.24±11.96uU/L)，GSH-PX为(176.87±23.31U)；非吸烟组LPO为(4.24±0.76umol/L)，SOD为(106.18±16.04uU/L)，GSH-PX为(206.32±50.25U)。两组比较吸烟组LPO含量显著升高(P<0.01)，而SOD、GSH-PX活性显著降低(P<0.01)，其中50例36～50岁男性吸烟者随其吸烟年限和吸烟量的增加，均呈相关性(P<0.01)。结论　吸烟可引起人体内OFR和LPO反应加剧，是导致氧化和抗氧化平衡失调的主要原因之一。     

急性一氧化碳中毒后迟发性脑病患者脂质过氧化作用

研究目的探讨脂质过氧化作用与急性一氧化碳中毒后迟发性脑病的关系。研究方法疾病组为1991年11月至1992年4月间住院急性一氧化碳中毒后迟发性脑病患者11例,年龄38～80岁;对照组为25例正常人,年龄33～68岁。所有研究对象均抽取空腹静脉血,分离血清,用荧光分光光度法测定过氧化脂质(LPO)和水溶性脂质过氧化物(WSFS)含量,测定结果进行t检验。结果对照组血清LPO和WSFS分别为2.70±0.87μmol/L和16.1±3.8U,疾病组分别为3.64±1.51μmol/L和20.3±3.1U,二项指标疾病组均明显高于对照组(P<0.05,P<0.01)。结论急性一氧化碳中毒后迟发性脑病患者血清LPO及WSFS增高,表明脂质过氧化作用参与了本病的脑组织损伤。     

心力衰竭患儿血清脂质过氧化物含量的变化

测定20例心力衰竭患儿血清脂质过氧化物(LPO)含量,结果显示,心衰患儿血清LPO含量(4.64±2.19μmol/L)显著高于正常组(2.77±0.56μmol/L)及心脏病无心衰组(2.84±0.88μmol/L),Ⅲ°心衰组(5.80±2.89μmol/L)高于Ⅱ°心衰组(3.54±0.66μmol/L).提示氧自由基引发的脂质过氧化损伤在心力衰竭发生、发展的病理过程中起一定作用.     

移植性肉瘤小鼠血及瘤组织中抗氧化酶与电子自旋共振的观察

对移植性肉瘤(S_(180))小鼠血及瘤组织中超氧化物歧化酶(SOD)、谷胱甘肽过氧化物酶(GSH-PX)及电子自旋共振(ESR)测定结果表明,S_(180)小鼠血中 SOD 为75.58±15.44mg/L,GSH-PX为13.70±4.83nmol/L,与正常对照组血中 SOD(95.16±28.01mg/L)及 GSH-PX(21.50±5.64nmol/L)比较,差异非常显著(P<0.01)。S_(180)小鼠血及瘤组织 ESR 测定未见信号出现。     

妊娠高血压疾病患者氧化应激状态的改变

目的探讨妊娠高血压疾病患者氧化应激状态的改变情况。方法选取妊娠高血压疾病患者60例,其中妊娠高血压患者15例,轻度子痫前期患者15例,重度子痫前期患者30例。另取同期住院分娩的正常孕妇30例作为对照组。所有研究对象均测血清同型半胱氨酸、丙二醛、超氧化物歧化酶、谷胱甘肽过氧化物酶水平。结果妊娠高血压疾病组MDA水平为7.02±3.05 nmol/L,显著高于对照组5.16±2.79 nmol/L(P<0.01),妊娠高血压疾病组GSH-PX水平105.41±32.95 U/0.1 ml,明显低于对照组127.52±40.64 U/0.1 ml(P<0.05),两组SOD水平无显著差别。妊娠高血压疾病组Hcy为11.8±3.4μmol/L,显著高于对照组9.7±3.0μmol/L(P<0.01)。并且妊娠高血压疾病组Hcy与MDA呈正相关。结论妊娠高血压疾病患者由于氧化物质增加,抗氧化物质减少,氧化还原系统平衡失调,呈现氧化应激状态。     

黄体破裂患者血清中脂质过氧化物及维生素E水平的变化

目的　测定黄体破裂患者LPO水平 ,以探讨造成黄体破裂的可能原因及预防措施。方法　随机选择 40例黄体破裂患者作为观察组 ,测定其血清LPO和VitE水平 ;40例正常妇女作对照组 ,测定其黄体期血清LPO和VitE水平。结果　观察组血清LPO水平为 (8 67± 4 3 2 )nmol/L ,明显高于对照组的 (2 72± 0 5 3 )nmol/L ,差异有显著性 (P <0 .0 1) ;观察组血清VitE水平为 (0 87± 0 3 1)mg/L ,明显低于对照组的 (2 40± 0 44 )mg/L ,差异有显著性 (P <0 .0 5 )。结论　血清及局部LPO增高导致组织损伤可能是造成黄体破裂的原因之一 ;黄体期前予VitE治疗对预防黄体破裂可能有一定的预防作用     

sE-SLT与LPO的测定在老年肺炎中的应用

为探讨可溶性E-选择素(sE-SLT)、过氧化脂质(LPO)在老年肺炎中的作用和临床意义,采用定量酶联免疫吸附实验双抗体夹心法和八国木夫硫代巴比妥酸比色法测定60例老年肺炎患者和30例正常人血浆sE-SLT及血清LPO含量,肺炎患者根据PORT评分系统分为Ⅲ、Ⅳ、Ⅴ3组,结果显示老年肺炎患者sE-SLT、LPOⅢ组为44.73±4.83μg/L、4.49±0.21nmol/mL;Ⅳ组为55.31±5.21μg/L、4.86±0.11nmol/mL;V组为83.83±9.45μg/L、4.88±0.38nmol/mL;明显高于正常对照组(P<0.001),3组间比较sE-SLTⅢ组与Ⅳ组之间有差异(P<0.05),LPOⅢ组与Ⅳ组之间差异显著(P<0.01),V组与Ⅲ组、Ⅳ组肺炎患者比较sE-SLT、LPO有非常显著差异(P<0.001)。本试验组PORT评分>130者sE-SLT在83.83±9.45μg/L范围,提示sE-SLT>74.38μg/L可作为重症肺炎的指标之一。结果提示老年肺炎血浆sE-SLT、血清LPO的变化是反映感染性疾病的良好指标,且与病情严重程度存在明显相关性,其含量变化对于观察老年肺炎病情进展、严重程度、治疗效果及预后具有临床意义。     

某些中枢神经系统疾病血清过氧化脂质和谷胱甘肽过氧化物酶水平的观察

研究目的探讨某些中枢神经系统疾病血清过氧化脂质(LPO)和谷胱甘肽过氧化物酶(GPX)水平的变化。处理方法 47例脑梗塞患者和14例急性一氧化碳中毒后迟发性脑病(DEACMP)患者均在发病一周内抽取空腹静脉血,迅速分离血清,置-20℃冰箱保存,3天内测定。对照组为42例健康人。LPO和GPX测定均采用荧光分光光度法。统计学处理采用t检验。结果脑梗塞患者和DEACMP患者血清LPO明显高于对照组(P<0.01),GPX明显低于对照组(P<0.01)。两组患者LPO/GPX的比值明显高于对照组(P<0.01),且较LPO增高更为明显。结论脑梗塞患者和DEACMP患者血青LPO增高,GPX降低。表明脑缺血或缺氧后脑组织的损伤与自由基引发的脂质过氧化作用增强有关。LPO/GPX的比值作为过氧化损害的检测指标较LPO更为敏感。     

Value of D-Dimers in patients with acute aortic dissection

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.     

Research of combined liver-kidney transplantation model in rats

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.     

BLOOD PRESSURE CHANGE WITH AGE IN SALT-SENSITIVE TEENAGERS

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.     

安心颗粒对急诊经皮冠状动脉介入术后生活质量影响的研究

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.     

The comparative studies of the influences of Urapidil and Nicardipine on sino-atrial node function, atrio-ventricular node function and hemodynamics

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.     

Expression of OPGmRNA and ODFmRNA in the patients of hip fracture due to osteoporosis

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.     

Dynamic Changes in Serum Estradiol and Progesterone levels in Patients of Premenstrual Syndrome with Adverse Flow of Liver-qi

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.     

Real-time Three-dimensional Echocardiography in Assessment of Left Ventricular and Right Ventricular Volumes

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.     

SCREENING FOR A 21-CHROMOSOME ABNORMALITY IN PREIMPLANTED EMBRYOS OF ELDERLY WOMEN

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.     

Scientific principles and rigorous processes should be followed in developing clinical guidelines for therapeutic interventions of integrative medicine

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.