DDPH对缺氧内皮细胞条件培养液致肺动脉平滑肌细胞PDGF mRNA表达的影响

利用地高辛标记的ｃＤＮＡ探针，原位检测ＤＤＰＨ［１－（２，６－二甲基苯氧基）－２－（３，４－二甲氧基苯乙胺基）丙烷酸盐］对缺氧内皮细胞条件培养液致猪ＰＡＳＭＣＰＤＧＦ基因表达的影响。实验分６组：常氧、低氧无血清培养液组（Ｎ、Ｈ组），常氧、低氧内皮细胞条件培养液组（ＮＥＣＣＭ、ＨＥＣＣＭ组），ＮＥＣＣＭ＋ＤＤＰＨ、ＨＥＣＣＭ＋ＤＤＰＨ组。用自动图像分析仪检测各组细胞ＰＤＧＦ－Ａ和－Ｂ链杂交产物的平均光密度（ＯＤ）值。结果：ＨＥＣＣＭ组ＰＤＧＦ－Ａ和－Ｂ链ｍＲＮＡ表达量分别是ＮＥＣＣＭ组的１．４０、１．４９倍（Ｐ＜０．０１），分别是Ｎ组的１．８倍、１．７倍（Ｐ＜０．０１），ＨＥＣＣＭ＋ＤＤＰＨ组ＰＤＧＦ－Ａ、－Ｂ链ｍＲＮＡ表达量分别为ＨＥＣＣＭ的０．７３倍、０．６５倍（Ｐ＜０．０１），与ＮＥＣＣＭ组相比，均无显著差异。提示ＤＤＰＨ在ＰＤＧＦ基因转录水平抑制ＨＥＣＣＭ诱导的ＰＡＳＭＣ的增殖。     

几种二萜类化合物对自由基诱导的线粒体损伤的保护作用(英文)

目的：了解冬凌草甲素（Ｏｒｉｄ）及其它香茶菜属二萜类化合物香茶菜醛（Ａｍｅ）毛叶香茶菜醇（Ｉｓｏ）是否与冬凌草甲素同样具有抗氧化作用。方法：用分光光度法测定脂质过氧化物丙二醛（ＭＤＡ）含量及线粒体肿胀度。用荧光分光光度法测定线粒体膜流动性。结果：Ｏｒｉｄ，Ａｍｅ，Ｉｓｏ４０，８０，１６０μｍｏｌ／Ｌ抑制铁 半胱氨酸（Ｆｅ２＋ Ｃｙｓ）引起的肝线粒体ＭＤＡ形成，并呈剂量－依赖关系。Ｏｒｉｄ１６０μｍｏｌ／Ｌ抑制肝线粒体膜流动性下降。（Ｐ值分别为０２９７±０．０２２，Ｆｅ２＋ Ｃｙｓ的Ｐ值为０４２３±０．０１４）；Ａｍｅ１６０μｍｏｌ／Ｌ还可抑制脂质过氧化引起的肝线粒体肿胀。结论：Ａｍｅ，Ｉｓｏ与Ｏｒｉｄ同样可能通过抑制脂质过氧化而产生抗氧化作用。     

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．     

ATP─MgCl2复合液抑制烫伤大鼠氧自由基和肿瘤坏死因子的生成

目的：研究ＡＴＰ－ＭｇＣｌ２对烧伤早期自由基及肿瘤坏死因子（ＴＮＦ）的生成所产生的影响．方法：通过大鼠３０％总体表面积（ＴＢＳＡ）三度烫伤模型观察经ＡＴＰ－ＭｇＣｌ２治疗后，血清ＴＮＦ－α生物学活性及全血细胞化学发光峰时和峰值的变化．结果：烫伤６ｈ后，血清ＴＮＦ－α生物学活性明显升高（Ｐ＜０．０５或Ｐ＜０．０１），至伤后２４ｈ均维持在较高水平．伤后立即经ＡＴＰ－ＭｇＣｌ２治疗可明显抑制血清ＴＮＦ－α活性升高．伤后６～２４ｈ，中性粒细胞（ＰＭＮ）产生氧自由基的能力明显增强（Ｐ＜０．０５或Ｐ＜０．０１），但血浆调理活性降低．伤后立即给予ＡＴＰ－ＭｇＣｌ２治疗，可抑制ＰＭＮ产生氧自由基的能力，同时提高血浆对ＰＭＮ的调理作用．结论：ＡＴＰ－ＭｇＣｌ２可降低烧伤早期炎症介质ＴＮＦ的生物学活性，抑制ＰＭＮ过度产生自由基，有利于严重烧伤机体重要脏器功能的维护     

L—Arg—NO途径对铝抑制大鼠海马CA3区诱发电位的影响

实验在７０只乌拉坦麻醉的ＳＤ大鼠上进行，在海马ＣＡ３区记录诱发的群体锋电位（ＰＳ）探讨了左旋精氨酸一氧化氮（Ｌ－Ａｒｇ－ＮＯ）途径对铝抑制ＰＳ波幅的作用。结果：（１）０．５ｍｏｌ／ＬＡｌＣｌ３注入ＣＡ３区后，ＰＳ幅度较注药前显著减小（Ｐ〈０．０５）。（２）ＣＡ３区内注入０．１和０．３ｍｏｌ／Ｌ硝基左旋精氨酸（ＮＬＡ）能分别加强０．２５和０．５ｍｏｌ／ＬＡｌＣｌ３的抑制效应，（３）ＣＡ３区注入０．３     

卡托普利对冠心病患者血清一氧化氮及脂质过氧化物水平的影响

测定了８０例冠心病（ＣＨＤ）患者血清一氧化氮（ＮＯ）、脂质过氧化终产物丙二醛（ＭＤＡ）的水平，并观察了卡托普利对ＣＨＤ患者血清ＭＤＡ及一氧化氮水平的影响。结果表明，１．ＣＨＤ患者血清ＮＯ水平显著低于对照组，而血清ＭＤＡ水平显著高于对照组（Ｐ均＜０．０１）；２．ＣＨＤ患者血清ＭＤＡ水平与ＮＯ水平呈显著负相关（ｒ＝－０．５８，Ｐ＜０．０１）；３．卡托普利可抑制ＣＨＤ患者脂质过氧化反应，降低血清ＭＤＡ水平，升高血清ＮＯ水平。提示ＣＨＤ患者脂质速或化反应增强，内皮功能失调，而卡托普利：可以升高ＮＯ水平，对ＣＨＤ的防治具有重要意义。     

中晚期鼻咽癌放疗前大剂量顺铂及卡铂化疗颈淋巴结疗效对比分析

目的：比较二种铂类药物治疗鼻咽癌（ＮＰＣ）的临床疗效和毒副作用。方法：３４例有颈淋巴结转移的ＮＰＣ患者分两组（各１７例）进行放疗前化疗。两组化疗第１～５ｄ（ｄ１～５）均给以５－Ｆｕ１０００ｍｇ／ｍ２静滴（ｉｖｄｒｏｐ）外，第１ｄ（ｄ１）Ａ组卡铂（ＣＢＰ）３００ｍｇ／ｍ２ｉｖｄｒｏｐ；Ｂ组顺铂（ＤＤＰ）１００ｍｇ／ｍ２ｉｖｄｒｏｐ。结果：ＯＲ（ＣＲ＋ＰＲ）：Ａ组５２．９４％，Ｂ组６４．７１％，Ｐ＞０．０５，差异无显著性；两组ＷＢＣ值第３周最低，第４周回升，且Ａ组第２～３周ＷＢＣ均值比Ｂ组低，按ＷＨＯ毒性与分级标准ＷＢＣ降至Ⅲ－Ⅳ级Ａ组４７．０６％，Ｂ组１１．８２％，Ｐ＞０．０５，差异有显著性。结论：ＣＢＰ＋５－Ｆｕ与ＤＤＰ＋５－Ｆｕ治疗ＮＰＣ疗效相近，ＣＢＰ不需水化，可在门诊执行，两组ＷＢＣ均值都在第３周最低，第４周恢复，但ＣＢＰ对ＷＢＣ的影响要较ＤＤＰ严重     

三七总皂甙对大鼠脊髓损伤组织总钙和脂质过氧化的影响

打击法致大鼠脊髓损伤４ｈ后脊髓组织ＭＤＡ、ＦＦＡ含量均显著增加（Ｐ＜０．０１）；ＸＯＤ活性显著升高（Ｐ＜０．０５），ＳＯＤ活性显著降低（Ｐ＜０．０１）；［Ｃａ＾２＋］ｔ显著增加（Ｐ＜０．００１）。表明ＳＣＩ病理过程中伴随Ｃａ＾２＋介导的自由基生成和膜脂质过氧反应。不同剂量的（３０、９０、２７０ｍｇ／ｋｇ，ｉｖ）ＰＮＳ均可抑制ＭＤＡ生成（Ｐ＜０．０１）；大剂量（２７０ｍｇ／ｋｇ）ＰＮＳ还可抑制ＦＦＡ     

尼群地平对体外循环中血小板数量及粘附,聚集功能的影响

４０例先天性心脏病患儿按随机配对原则分为对照组（Ｃ组）与实验组（Ｎ组）。Ｎ组术前７ｄ口服尼群地平０．５ｍｇ·ｋｇ－１／次，１次／８ｈ，最后１次用药于术前２ｈ。测定围体外循环期血小板计数、瑞斯托霉素及ＡＤＰ诱导的最大凝集率。结果表明，Ｎ组血小板计数、瑞斯托霉素诱导的最大凝集率在转流中、后增高于Ｃ组（Ｐ＜０．０５～０．０１），ＡＤＰ诱导的最大聚集率在转流前、中低于Ｃ组，转流后高于Ｃ组（Ｐ＜０．０５～０．０１），术后纵隔引流量明显减少。说明尼群地平能有效地抑制体外循环中血小板活化，保护血小板的数量与功能     

宁夏枸杞多糖对CCl_4损伤大鼠肝脏的保护作用

以ＣＣｌ＿４诱发大鼠肝脏脂质过氧化为自由基损伤模型，观察枸杞多糖（ｌｙｃｉｕｍ ｂａｒｂａｒｕｍｐｃｌｙｓａｃｃｈａｒｉｄｏ，ＬＢＰ）不同剂量（２５ｍｇ／１００ｇＢＷ·ｄ－１；５０ｍｇ／１００ｇＢｗ·ｄ－１）对鼠肝的保护作用。结果低剂量组能明显降低肝中丙二醛（ＭＤＡ）及甘油三脂（ＴＧ）（Ｐ＜０．０１，Ｐ＜０．０５）；两剂量组均能明显升高肝中超氧化物歧化酶（ＳＯＤ）活性（Ｐ＜０．００１）。提示ＬＢＰ对鼠肝自由基损伤有保护作用。高剂量组对ＭＤＡ及ＴＧ降低作用不明显，ＬＢＰ减轻脂质过氧化作用可能存在最佳剂量范围。     

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.