维生素C和维生素E治疗糖尿病前后氧自由基水平的变化

测定了３１例非胰岛素依赖型糟尿病（ＮＩＤＤＭ）患者，维生素Ｃ、维生素Ｅ治疗前后的血浆过氧化脂质（ＬＰＯ）水平、全血谷胱甘肽过氧化物酶（ＧＳＨ－ＰＸ）及红细胞超氧化物歧化酶（ＳＯＤ）活性并与正常人进行了比较。结果表明ＮＩＤＤＭ患者治疗前后ＬＰＯ水平高于正常人组，ＧＳＨ－ＰＸ／ＬＰＯ、ＧＳＨ－ＰＸ及ＳＯＤ活性明显低于正常人组；糖尿病组治疗前与治疗后比较，后者ＬＰＯ水平下降，ＧＳＨ－ＰＸ／ＬＰＯ、ＧＳＨ－ＰＸ及ＳＯＤ活性升高。结果提示氧自由基（ＯＦＲ）参与糖尿病的病变过程。     

非胰岛素依赖型糖尿病患者红细胞膜ATPase活性改变及其影响因素

目的探讨非胰岛素依赖型糖尿病（ＮＩＤＤＭ）患者红细胞膜Ｎａ＋－Ｋ＋－ＡＴＰａｓｅ及Ｃａ２＋－ＡＴ－Ｐａｓｅ活性改变的影响因素。方法测定７７例ＮＩＤＤＭ患者和５０例正常人血糖、总胆固醇（ＴＣ）、甘油三酯（ＴＧ）、高密度脂蛋白胆固醇（ＨＤＬＣ）、脂质过氧化物（ＬＰＯ）、谷胱甘肽（ＧＳＨ）、糖化血红蛋白（ＨｂＡｌｃ）、超氧化物歧化酶（ＳＯＤ）、谷胱甘肽过氧化物酶（ＧＳＨＰＸ）、红细胞膜Ｎａ＋－Ｋ＋－ＡＴ－Ｐａｓｅ和Ｃａ２＋－ＡＴＰａｓｅ活性。ｔ检验、直线相关分析和多元逐步回归分析。结果ＮＩＤＤＭ组血糖、ＨｂＡｌｃ、ＴＣ、ＴＧ、ＴＣ／ＨＤＬＣ、ＬＰＯ显著高于对照组（Ｐ＜０．０１），ＨＤＬＣ、ＧＳＨ、ＳＯＤ、ＧＳＨＰＸ、红细胞膜Ｎａ＋－Ｋ＋－ＡＴＰａｓｅ和Ｃａ２＋－ＡＴＰａｓｅ活性低于对照组（除ＧＳＨ的Ｐ＜０．０５外，其他Ｐ＜０．０１）；不同ＨｂＡｌｃ、ＴＣ／ＨＤＬＣ、ＧＳＨ、ＬＰＯ、ＴＣ组的红细胞膜Ｎａ＋－Ｋ＋－ＡＴＰａｓｅ活性有显著性差别。红细胞膜Ｎａ＋－Ｋ＋－ＡＴＰａｓｅ活性＝１２．８０＋０．２７（ＧＳＨ）－０．１２（ＬＰＯ）－０．０９（ＴＣ／ＨＤＬＣ），红细胞胞膜Ｃａ２＋－ＡＴＰａｓｅ活性＝１０８．２０＋１．     

LPO、MDA、SOD、GSH－PX测定对脑外伤高压氧治疗的疗效评估

对４０例脑外伤患者进行了高压氧治疗，并在治疗前后进行了血清过氧化脂质（ＬＰＯ）、丙二醛（ＭＤＡ）、超氧化物歧化酶（ＳＯＤ）和谷胱甘肽过氧化物酶（ＧＳＨ－ＰＸ）的测定。结果：治疗前ＬＰＯ、ＭＤＡ、ＳＯＤ、ＧＳＨ－ＰＸ分别为：８．０４±１．２５（μｍｏｌ／Ｌ）、７．３５±０．２０（ｎＭ／ｍｌ）、８８．３０±１５．２０（Ｎｕ／ｍｌ）、１７１．５６±２８．２０（ｕ），治疗后为５．３５±１．７５（ｕｍｏｌ／Ｌ），４．８５±１．２０（ｎＭ／ｍｌ），９７．４４±２１．０２（Ｎｕ／ｍｌ），１８８．８５±４５．５５（ｕ）。治疗前病人组ＬＰＯ、ＭＤＡ含量明显高于健康组，而ＳＯＤ、ＧＳＨ－ＰＸ活力则明显低于健康组。治疗后随着症状体征的消失，ＬＰＯ、ＭＤＡ明显降低，而ＳＯＤ、ＧＳＨ－ＰＸ逐渐升高，四项指标均向正常范围逆转。且ＳＯＤ、ＧＳＨ－ＰＸ已接近正常值（Ｐ＞０．０５）．故ＬＰＯ、ＭＤＡ、ＳＯＤ、ＧＳＨ－ＰＸ的测定可做为高压氧治疗脑外伤的有价值的疗效判断指标而用于临床。     

冠心病患者体内脂质过氧化损伤的临床研究

本文测定了３０例ＣＨＤ患者及２０例健康者血脂、ＬＰＯ、ＯＸ－ＬＤＬ、ＳＯＤ、ＧＳＨ－ＰＸ水平，发现ＣＨＤ患者血浆ＨＤＬ－Ｃ、ＬＤＬ－Ｃ／ＨＤＬ－Ｃ、ＡｐｏＢ、ＬＰＯ、ＯＸ－ＬＤＬ水平明显超过健康对照者，而其血浆ＬＤＬ－Ｃ、ＡｐｏＡ、ＡｐｏＡ１／ＡｐｏＢ、ＳＯＤ、ＧＳＨ－ＰＸ水平无明显低于健康对照者，并发现ＣＨＤ患者血浆ＬＰＯ水平与ＴＣ、ＴＧ、ＬＤＬ－Ｃ、ＬＤＬ－Ｃ／ＨＤＬ－Ｃ、ＯＸ－ＬＤＬ、Ａｐｏ     

不同心功能患者氧自由基变化的研究

测定５０例正常人和１２５例不同心功能心脏病患者红细胞ＳＯＤ、血浆ＬＰＯ及全血ＧＳＨ－ＰＸ，并计算ＧＳＨ－ＰＸ／ＬＰＯ比值。结果表明：Ｉ～Ⅳ级心功能患者ＳＯＤ活性及ＧＳＨ－ＰＸ／ＬＰＯ比值均明显低于正常对照组（Ｐ＜０．００１），但与心功能分级无明显相关关系，ＧＳＨ－ＰＸ在不同心功能组间变化也无规律性，提示ＳＯＤ活性变化只是心脏病损的表现之一，与心衰程度关系不大，ＬＰＯ可作为心脏病损和心衰程度重要指标之一。在分析脂质过氧化程度时，ＧＳＨ－ＰＸ／ＬＰＯ比值较单用ＧＳＨ－ＰＸ敏感，但ＧＳＨ－ＰＸ／ＬＰＯ比值是否较单用ＬＰＯ敏感还有待更多的研究来证实。     

鼻咽癌患者血清LHP,CSH—PX,SOD活性变化的临床意义

本文测定２４例鼻咽癌患者血清脂质过氧化氢（ＬＨＰ），谷胱甘肽地过氧化物酶（ＧＳＨ－ＰＸ）超氧化物歧化酶（ＳＯＤ）（包括总超氧化物歧化酶Ｔ－ＳＯＤ，锰超氧化物歧化酶Ｍｕ－ＳＯＤ，铜锌超氧化物歧化酶Ｃｕ，Ｚｎ－ＳＯＤ）变化，结果ＬＨＰ增高明显，与对照组相比（Ｐ〈０．０１），表明鼻咽癌与氧自由基（ＯＦＲ）损伤有关，ＧＳＨ－ＰＸ，Ｔ－ＳＯＤ，Ｍｕ－ＳＯＤ降低明显，与对照组相比（Ｐ〈０．０１），说明鼻咽癌患     

人红细胞量子化过程中氧自由基损伤的实验观察

本文观察了红细胞在量子化过程中的氧饱和度（ＳＯ２）、脆性（ＲＦＴ）、膜流动性（ＬＦＵ）、丙二醛（ＭＤＡ）、超氧化物岐化酶（ＳＯＤ）、过氧化氢酶（Ｃａｔ）、谷胱甘肽过氧化物酶（ＧＳＨ－ＰＸ）和血浆ＳＯＤ、脂质过氧化物（ＬＰＯ）。结果显示，ＳＯ２随时间延长而增加（Ｐ＜０．００１），脆性则下降（Ｐ＜０．０１），膜流动性亦降低（Ｐ＜０．０５）；ＭＤＡ浓度和ＳＯＤ、Ｃａｔ、ＧＳＨ－Ｐｘ活性差异无显著性。血浆     

去纤酶对冠心病患者自由基相关酶活性的影响

本文对６９例冠心病（ＣＡＤ）患者测定了自由基相关酶的活性，并对其中１６例患者用去纤酶进行了治疗。结果表明：ＣＡＤ患者血中脂质过氧化物（ＬＰＯ）明显高于正常人（Ｐ＜０．０１），并与心肌缺血损伤程度呈正相关（Ｐ＜０．００１），谷胱甘肽过氧化物酶（ＧＳＨ－Ｐｘ）明显低于正常人，ＧＳＨ－Ｐｘ和ＧＳＨ－Ｐｘ／ＬＰＯ比值与心肌缺血损伤程度呈负相关（Ｐ＜０．００１），超氧化物歧化酶（ＳＯＤ）无明显变化（Ｐ＜０．０５）。去纤酶用药前后上述酶进行了比较发现，去纤酶能提高ＧＳＨ－Ｐｘ／ＬＰＯ比值（Ｐ＜０．０１）和ＳＯＤ活性（Ｐ＜０．０５）降低ＬＰＯ的损伤（Ｐ＜０．０１）。提示ＣＡＤ缺血性损伤与ＬＰＯ升高，即自由基产生过多或／和抗自由基不足有关。去纤酶可通过降低ＬＰＯ和提高ＧＳＨ－Ｐｘ和ＳＯＤ的活性用于治疗ＣＡＤ。     

胃癌耐药细胞株耐药谱的体外实验

观察胃癌细胞与抗肿瘤药作用后对不同药物耐的耐受情况，方法：胃癌细胞系ＳＧＣ７９０１在体外分别与长春新碱（ＶＣＲ），５氟尿嘧啶（５－Ｆｕ），阿霉素（ＡＤＭ）及氨甲喋呤（ＭＴＸ）作用，获得ＳＧＣ７９０１／ＶＣＲ，ＳＧＣ７９０１／ＡＤＭ，ＳＧＣ７９０１／５－Ｆｕ及ＳＧＣ７９０１／ＭＴＸ４个耐药细胞株。体外细胞毒性实验观察它们对ＶＣＲ，ＡＤＭ，５－Ｆｕ，ＭＴＸ，顺铂（ＣＤＤＰ）以及丝裂霉素Ｃ（ＭＭＣ）的敏     

自由基损伤对乳腺癌患者抗氧化能力影响

对１４例乳腺癌患者全血谷胱甘肽过氧化物酶（ＧＳＨ－Ｐｘ）、红细胞超氧化物歧化酶（ＳＯＤ）的活性以及血浆脂质过氧化物（ＬＰＯ）含量进行测定，结果表明乳腺癌患者ＧＳＨ－Ｐｘ及ＳＯＤ活性均比正常人明显降低，ＬＰＯ含量明显升高，ＧＳＨ－ＰＸ／ＬＰＯ、ＳＯＤ／ＬＰＯ比值也明显降低，由此可见乳腺癌患者抗氧化能力降低，清除自由基功能受损，机体受自由基过氧化损伤的威胁。     

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.     

The clinicopathological and immuohistochemical analysis of solid-pseudopapillary tumor of the pancreas： report of 9 cases

Objective：To investigate the clinical features, pathological characteristics and immunophenotype of solid-pseudopapillary tumor of the pancreas（SPTP）. Methods：Nine surgically treated cases of SPTP were retrospectively reviewed. Hematoxylin and Eosin（HE） staining and immunohistochemical staining were used to analyze all cases, and the general clinical data was collected. Results：Six patients were asymptomatic except for a palpable mass. Two patients complained of vague-epigastric pain. One patient appeared jaundice. The tumor was encapsulated and solid tissues alternately with cystic tissues. Histologically, the histological structure of solid portion was pseudopapillary with a fibrovascular core. Tumor cells were uniform and medium-sized which were arranged in sheets ets or nests or pseudopapillary patterns. Immunohistochemical studies demonstrated that SPTP proved positive in vimentin（9/9 cases）, AAT（9/9 cases）, NSE（9/9 cases）, ACT（7/9 cases）, CK20（2/9 cases）, CgA（1/9 cases）, S-100（3/gcases）, PR（4/gcases）, Syn（3/9 cases） and CD56（5/9cases）, negative in CEA and ER. Conclusion：SPTP is a tumor predominantly occurring in young women frequently without special symptoms. This tumor has various characteristical histological patterns with different immunophenotype.     

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.