Hg~(2 )与Co~(2 )、Cu~(2 )、Mn~(2 )、Pb~(2 )、Zn~(2 ) 的非有机溶剂萃取分离和分析研究

实现部分金属离子混合样品中时Ｈｇ~（２＋）的定量分离。方法：利用ＰＥＧ－ＥＢＴ－（ＮＨ_４）_２ＳＯ_４体系对Ｃｏ~（２＋）、Ｃｕ~（２＋）Ｍｎ~（２＋）、Ｐｂ~（２＋）、Ｚｎ~（２＋）、Ｈｇ~（２＋）混合溶液进行萃取分离。结果：在ｐＨ８～１０的ＮＨ_３－ＮＨ_４Ｃｌ水溶液中Ｃｏ~（２＋）、Ｃｕ~（２＋）、Ｍｎ~（２＋）、Ｐｂ~（２＋）、Ｚｎ~（２＋）几乎被ＰＥＧ相完全萃取,而Ｈｇ~（２＋）几乎不被萃取,从而获得Ｈｇ~（２＋）、Ｃｕ~（２＋）、Ｍｎ~（２＋）、Ｐｂ~（２＋）、Ｚｎ~（２＋）混合离子的定量分离。结论：本实验为Ｃｏ~（２＋）、Ｃｕ~（２＋）、Ｍｎ~（２＋）、Ｐｂ~（２＋）、Ｚｎ~（２＋）、Ｈｇ~（２＋）混合液中测定Ｈｇ~（２＋）提供了安全、快速、简单的定量分析方法。     

Hg^2＋与Co^2＋,Cu^2＋,Mn^2＋,Pb^2＋,Zn^2＋的非有机溶剂萃取 …

目的：实现部分金属离子混合样品中Ｈｇ＾２＋的定量分离。方法：利用ＰＥＧ－ＥＢＴ－（ＮＨ４）２ＳＯ４体系对Ｃｏ＾２＋、Ｃｕ＾２＋、Ｍｎ＾２＋、Ｐｂ＾２＋、Ｚｎ＾２＋、Ｈｇ＾２＋混合溶液进行萃取分离。结果：在ＰＨ８－１０的ＮＨ４ＮＨ４ＣＩ水溶液中Ｃｏ＾２＋、Ｃｕ＾２＋、Ｍｎ＾２＋、Ｐｂ＾２＋、Ｚｎ＾２＋几乎被ＰＥＧ相完全萃取,而Ｈｇ＾２＋几乎不被萃取,从而获得Ｈｇ＾２＋与Ｃｏ＾２＋、Ｃｕ＾２＋、Ｍｎ＾     

三磷酸肌醇,钙离子在胃泌素促人结肠癌SW480细胞株增殖中的作用

目的：探讨胃泌素对人结肠癌细胞株ＳＷ４８０内三磷酸肌醇（ＩＰ３）,钙离子（Ｃａ＾２＋）的影响及其在细胞增殖中的作用,为结肠癌抗信息传导治疗提供实验依据。方法：（１）＾３Ｈ－肌醇标记细胞进行ＩＰ３分析,（２）应用Ｃａ＾２＋荧光指示剂Ｆｕｒａ－２检测细胞内Ｃａ＾２＋的浓度。（３）ＭＴＴ比色分析法检测活细胞数（吸光度Ａ值）。结果：５肽胃泌素可使ＳＷ４８０细胞内ＩＰ３,Ｃａ＾２＋水平升高,同时活细胞数Ａ值     

金属离子及氨基糖对大鼠肾脏N—乙酰氨基葡萄糖转移酶Ⅱ活性测定的…

采用反相ＨＰＬＣ荧光测定法对大鼠肾脏Ｎ－乙酰氨基葡萄糖转移酶（ＧｎＴ）Ⅲ活性测定时二价金属离子及氨基糖的影响进行了研究，结果表明：ＧｎＴⅢ必须有二价金属离子激活，最佳激活离子为Ｍｎ＾２＋离子，其次为Ｍｇ＾２＋，离子；二价金属离子对ＧｎＴⅢ的激活作用依次为Ｍｎ＾２＋〉Ｍｇ＾２＋〉Ｃｏ＾２＋〉Ｃａ＾２＋〉Ｎｉ＾２＋〉Ｂａ＾２＋〉Ｚｎ＾２＋。四种氨基糖（Ｎ－乙酰氨基葡萄糖ＧｌｃＮＡｃ，Ｎ－乙酰基半乳糖Ｇ     

含氮聚硅氧烷配位体及其与金属离子的络合作用

研究ｎ－β（氨乙基）－γ（氨丙基）三乙氧基硅烷［ＮＨ２（ＣＨ２）２ＮＨ（ＣＨ２）３Ｓｉ（ＯＥｔ）３］与二甲基二乙氧基硅烷［（ＣＨ３）２Ｓｉ（ＯＥｔ）２］共水解，制备含－（ＣＨ２）３ＮＨ（ＣＨ２）２ＮＨ２功能基的聚硅氧烷配位体。用ＩＲ、１ＨＮＭＲ和元素分析法对共聚产物的结构进行了分析，同时用紫外－可见光谱法和ＳＥＭ考察了共聚产物与Ｃｕ２＋等金属离子的络合作用。结果发现，两种单体进行了共水解反应，而且随着ＮＨ２（ＣＨ２）２ＮＨ（ＣＨ２）３Ｓｉ（ＯＥｔ）３比例增加，水解程度提高。共聚产物可以与Ｃｕ２＋离子形成稳定的络合物，但不能与Ｚｎ２＋离子或Ａｌ３＋离子形成稳定的络合物或螯合物。     

妊娠期8种元素含量的动态观察

用日立Ｉ－６０００／Ｉ－７０００型偏振塞曼原子吸收法，对不同孕周孕妇的血液和分娩后胎儿脐血进行Ｆｅ、Ｚｎ、Ｃｕ，Ｍｎ、Ｓｅ、Ｐｂ、Ｃａ、Ｍｇ８种元素含量的测定。结果８种元素有不同程度的波动趋势，脐血中Ｆｅ、Ｃａ、Ｓｅ、Ｐｂ含量与母血呈正相关（ｒ＝０．３８～０．６２，Ｐ＜０．０１）。     

金属硫蛋白对大鼠肝脏线粒体氧自由基损伤的保护作用

目的：研究金属硫蛋白（ＭＴ）对氧自由基损伤线粒体的保护作用以探讨其细胞保护机制。方法：采用ＦｅＳＯ４／抗坏血酸自由基发生系统直接损伤线粒体，测定Ｃａ（２＋）－Ｍｇ（２＋）－ＡＴＰａｓｅ活性和Ｃａ（２＋）摄入的变化。结果：ＭＴ能够直接拮抗氧自由基对线粒体Ｃａ（２＋）－Ｍｇ（２＋）－ＡＴＰａｓｅ活性和Ｃａ（２＋）摄入的抑制作用（Ｐ＜０．０１）。结论：ＭＴ对氧自由基损伤线粒体有明显保护作用，ＭＴ对细胞器线粒体的保护作用可能是细胞保护机制之一。     

肺部疾病血清微量元素的综合分析

用电分析化学方法系统地测定了５０例肺癌病人和３０例肺心病人血清Ｃｕ、Ｚｎ、Ｐｂ、Ｃａ、Ｎｉ、Ｃｏ、Ｓｅ、Ｍｏ、Ｍｎ等９种微量元素，并同２１例健康组进行对照，结果是肺癌组血清Ｃｕ、Ｐｂ、Ｃｄ高于对照组（Ｐ＜０．０１），血清Ｚｎ、Ｓｅ、Ｍｏ、Ｍｎ低于对照组（Ｐ＜０．０１），Ｎｉ和Ｃｏ无明显变化。肺心病组血清Ｃｕ、Ｃｏ、Ｍｎ高于对照组（Ｐ＜０．０１），Ｃｄ略高于对照组Ｐ＞０．１），ＺｎＭｏ低于对照组（Ｐ＜０．０１）。Ｓｅ、Ｎｉ、Ｐｂ无明显变化。再以肺癌组和肺心病组进行比较，结果肺癌组Ｃｕ、Ｐｂ、Ｃｄ、Ｎｉ均高于肺心病组（Ｐ＜０．０１），而Ｚｎ、Ｃｏ、Ｍｏ、Ｍｎ、Ｓｅ均低于肺心病组（Ｐ＜０．０１）。     

三磷酸肌醇、钙离子在胃泌素促人结肠癌SW480细胞株增殖中的作用

目的：探讨胃泌素对人结肠癌细胞株ＳＷ４８０内三磷酸肌醇（ＩＰ３）、钙离子（Ｃａ２＋）的影响及其在细胞增殖中的作用,为结肠癌抗信息传导治疗提供实验依据。方法：①３Ｈ－肌醇标记细胞进行ＩＰ３分析。②应用Ｃａ２＋荧光指示剂Ｆｕｒａ－２检测细胞内Ｃａ２＋的浓度。③ＭＴＴ比色分析法检测活细胞数（吸光度Ａ值）。结果：５肽胃泌素（Ｐｅｎｔａｇａｓｔｒｉｎ,ＰＧ）可使ＳＷ４８０细胞内ＩＰ３、Ｃａ２＋水平升高,同时活细胞数Ａ值增加;５肽胃泌素与其受体拮抗剂丙谷胺（Ｐｒｏｇｌｕｍｉｄｅ,ＰＧＬ）合用时,癌细胞内ＩＰ３、Ｃａ２＋水平和活细胞数Ａ值均无明显变化。结论：提示胃泌素可能通过肌醇脂质信号传导途径促进人结肠癌细胞株ＳＷ４８０的增殖     

金属离子及氨基糖对大鼠肾脏N－乙酰氨基葡萄糖转移酶Ⅲ活性测定的影响

采用反相ＨＰＬＣ荧光测定法对大鼠肾脏Ｎ－乙酰氨基葡萄糖转移酶（ＧｎＴ）Ⅲ活性测定时二价金属离子及氨基糖的影响进行了研究。结果表明：ＧｎＴⅢ必须有二价金属离子激活，最佳激活离子为Ｍｎ￣（２＋）离子，其次为Ｍｇ￣（２＋）离子；二协金属离子对ＧｎＴⅢ的激活作用依次为Ｍｎ￣（２＋）＞Ｍｇ（２＋）＞Ｃｏ（２＋）＞Ｃａ￣（２＋）＞Ｎｉ￣（２＋）＞Ｂａ￣（２＋）＞Ｚｎ￣（２＋）。四种氨基糖（Ｎ－乙酰氨基葡萄糖ＧｌｃＮＡｃ，Ｎ－乙酰氨基半轧糖ＧａＩＮＡｃ，氨基葡萄糖ＧｌｃＮ，氨基半乳糖ＧａｌＮ），除ＧｌｃＮ使ＧｎＴ活性增加外，其余三种对ＧｎＴⅢ均有不同程度的抑制作用。     

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.