消化道肿瘤患者血中抗氧化酶活力分析

采集５２例消化道肿瘤患者（１０例食管癌、２１例胃癌、２１例结肠癌）外周血，分离出血浆和血细胞，测定其超氧化物歧化酶（ＳＯＤ）活性，血细胞过氧化氢酶（ＣＡＴ）和谷胱甘肽过氧化物酶（ＧＳＷ－Ｐｘ）活性，并与４８例健康人进行了比较。与对照组相比，肿瘤患者血浆ＣｕＺｎＳＯＤ和血细胞ＣｕＺｎＳＯＤ、ＧＳＨ－ｐｘ活性显著降低，ＣＡＴ有较大的可变性，但没有统计学差别。结果提示：血中抗氧化酶活性的改变可视为组织受损的一个指标。     

鱼油、豆油对饲低硒粮大鼠机体抗氧化酶和血浆酶活性的影响

目的：观察鱼油和豆油对饲低硒及补硒粮喂养大鼠血谷胱甘肽过氧化物酶（ＧＳＨ－Ｐｘ）及血浆酶活力的影响。方法：ＧＳＨ－Ｐｘ采用ＤＴＮＢ法而血浆酶采用自动生化分析仪测定。结果：补加鱼油和豆油（５０ｇ／ｋｇ）饲料喂养大鼠４周，血中ＧＳＨ－Ｐｘ活力均明显降低；豆油组血浆中ＡＬＰ显著增加，ＧＯＴ、ＧＰＴ、α－ＨＢＤＨ有升高趋势；鱼油组ＧＰＴ显著增加。补硒后ＧＳＨ－Ｐｘ活力均显著升高，豆油中血浆酶活性有不同程度改善，鱼油组变化不显著。结论：多不饱和脂肪酸负荷能够降低动物体内抗氧化能力。鱼油（ω－３）、豆油（ω－６）对血浆酶的影响存在明显差异     

鱼油,豆油对饲低硒粮大鼠机体抗氧化酶和血浆酶活性的影响

目的；观察鱼油和豆油对饲低硒及补硒粮喂养大鼠血谷胱甘肽过氧化物酶（ＧＳＨ－Ｐｘ）及血浆酶活力的影响。方法：ＧＳＨ－Ｐｘ采有和ＤＴＮＢ法而血浆酶采用自动生化分析仪测定。结果：补加鱼油和豆油饲料喂养大鼠４周，血中ＧＳＨ－Ｐｘ活力均明显降低；豆油组血浆中ＡＬＰ显著增加，ＧＯＴ、ＧＰＴ，α－ＨＢＤＨ有升高趋势；鱼油组ＧＰＴ显著增加。补硒后ＧＳＨ－Ｐｘ活力均显著升高，豆油中血浆酶活性有不同程度改善，鱼油组变     

甲亢与硒谷胱甘肽过氧化物酶关系研究

本文报导了甲亢患者血清硒谷光甘肽过氧化物酶（ＳｅＧＰＸ）还原型谷光甘肽（ＧＳＨ）及血清硒含量，结果表明：疾病组与对照组各项指标差别非常显著（Ｐ〉０．０１），甲亢患者硒明显低于对照组，缺硒使含硒酶的活性低下。     

口腔癌患者血中自由基的变化

目的 探讨口腔癌患者血中自由基在术前、术后的变化,探讨自由基与口腔癌的关系。方法 测定２５例口腔癌患者术前及术后７天血中自由基的有关项目,并与３０例空组比较。结果口腔癌组脂质过氧化物（ＬＰＯ）高于对照组,超氧化物歧化酶（ＳＯＤ）、一氧化氮（ＮＯ）低于对照组,差异均有高度显著性;口腔癌患者术后７天测定ＬＰＯ、ＳＯＤ与术前比较差异无显著性,ＮＯ浓度低于术前。结论口腔癌与体内自由基密切相关。     

亚硒酸钠对荷瘤小鼠体内硒含量，GSH－Px活力和MDA含量的影响

目的：探讨荷瘤小鼠体内硒水平，谷胱甘肽过氧化物酶（ＧＳＨ－Ｐｘ）活力及丙二醛（ＭＤＡ）含量的变化和亚硒酸钠对这种变化的影响。方法：采用ＤＡＮ荧光法、ＤＴＮＢ比色法及ＴＢＡ荧光法分别测定荷瘤及正常小鼠体内微量元素硒的含量、ＧＳＨ－Ｐｘ活力及过氧化脂质产物ＭＤＡ的含量。结果：发现荷瘤小鼠体内全血及肝组织中硒的含量、肝匀浆中ＧＳＨ－ｐｘ活力均明显低于正常小鼠。亚硒酸钠虽然在该实验剂量下对Ｓ－１８０肉瘤的生长没有显著的抑制作用，但能纠正荷瘤小鼠全血及肝组织中硒含量的下降，增加全血及肝组织中ＧＳＨ－Ｐｘ活力，降低血浆中ＭＤＡ的含量，对抗ＣＣｌ４引起的肝组织中ＧＳＨ－ｐｘ活力下降。结论：亚硒酸钠能对抗肿瘤对机体抗氧化能力的削弱作用，这时肿瘤的预防和治疗有一定意义。     

口腔颌面部肿瘤患者治疗前后血浆纤维蛋白原和D二聚体含量的变化分析

目的探讨口腔颌面部肿瘤患者治疗前后血浆纤维蛋白原（Fbg）和血浆D-二聚体（D-D）含量的变化及其临床意义。方法检测60例口腔颌面部良性肿瘤和158例口腔颌面部恶性肿瘤患者治疗前后血浆Fbg和D-D含量。结果口腔颌面部恶性肿瘤初发未转移患者治疗前血浆Fbg、D-D升高,与正常对照组比较差异有统计学意义（P〈0.05）。治疗后Fbg、D-D含量较治疗前有所降低（P〈0.05）。口腔颌面部肿瘤复发转移患者治疗前血浆Fbg、D-D较正常对照组显著升高（P〈0.01）,治疗后Fbg及D-D均较治疗前下降（P〈0.05）,但仍稍高于正常水平。结论口腔颌面部恶性患者存在不同程度凝血和纤溶系统的异常,并随病情的好转而改善,血浆Fbg、D-D含量可作为口腔颌面部肿瘤疗效观察及预后判断的指标。     

大肠癌抗氧化体系的损伤

目的：探讨自由基与人体大肠癌的关系。方法：通过生物化学方法分别测定了大肠癌组织中超氧化物歧化酶（ＳＯＤ）、过氧化氢酶（ＣＡＴ）、谷胱苷肽过氧化物酶（ＧＳＨ－ Ｐｘ）的活性及脂质过氧化物丙二醛（ＭＤＡ）的含量、微量元素硒（Ｓｅ）的含量、维生素Ｅ的含量。同时采用患者正常粘膜为对照测定上述各项指标。结果：ＳＯＤ、ＣＡＴ、ＧＳＨ－ Ｐｘ 的活性在肿瘤组织中较正常粘膜显著降低（Ｐ＜ ０．０１, Ｐ＜ ０．０５,Ｐ＜ ０．０１）。ＭＤＡ、Ｓｅ 和维生素Ｅ 在肿瘤组织中较正常粘膜显著降低（Ｐ＜ ０．０１,０．０１＜ Ｐ＜ ０．０５,Ｐ＜ ０．０１）。结论：人类大肠癌的抗氧化酶系均有不同程度的损伤,脂质过氧化作用减弱,硒代谢异常,裂解类抗氧化剂也有损伤     

鼻咽癌患者全血硒和GSH-PX含量的变化

目的　探讨鼻咽癌（ＮＰＣ）患者全血硒和谷胱甘肽过氧化物酶（ＧＳＨ－ＰＸ）水平与健康人的差别,以及与肿瘤临床分期之间的关系。　方法　对１２２ 例ＮＰＣ患者采用２．３－二氨基萘（ＤＮ）荧光法测定血硒,采用２－硝基苯甲酸直接显色法测定血ＧＳＨ－ＰＸ水平,并设健康人对照;数据采用ｔ检验及方差分析进行统计学处理。　结果　（１）放疗前ＮＰＣ患者血硒和ＧＳＨ－ＰＸ水平均低于对照组（Ｐ＜ ０．０１）。（２）随着临床分期的增加,血硒和ＧＳＨ－ＰＸ水平逐渐下降,（Ｐ＜ ０．０１）。（３）放疗后患者血硒和ＧＳＨ－ＰＸ水平比放疗前升高,但仍比对照组低（Ｐ＞ ０．０５）。　结论　（１）ＮＰＣ患者血硒和ＧＳＨ－ＰＸ均处于低水平状态。（２）血硒和ＧＳＨ－ＰＸ水平与ＮＰＣ的发生、发展可能有关。     

大肠癌患者血浆生长抑素免疫活性物质含量变化及其意义

应用放射免疫测定方法，观察了大肠癌患者血浆生长抑素免疫活性物质（ＳＬＩ）含量变化。结果显示，肿瘤组血浆ＳＬＩ含量显著升高（Ｐ〈０．０１）；血浆ＳＬＩ含量以Ｄｕｋｅｓ Ａ，Ｂ期组升高更为明显；手术切除肿瘤后，血浆ＳＬＩ含量较术前明显降低（Ｐ〈０．０５）；血浆ＳＬＩ含量与肿瘤细胞细胞分化程度、肿瘤部位无关。结果说明，机体生长抑素（ＳＳ）的分泌和释放与大肠癌的病理过程密切相关。大肠癌早、中期血浆ＳＳ含量     

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.