SEARCH FOR HERPES SIMPLEX VIRUS TYPE2（HSV－2）AND HUMAN PAPILLOMAVIRUS（HPV）IN THE NORMAL AND ABNORMAL CERVICAL SAMPLES

ＳＥＡＲＣＨＦＯＲＨＥＲＰＥＳＳＩＭＰＬＥＸＶＩＲＵＳＴＹＰＥ２（ＨＳＶ－２）ＡＮＤＨＵＭＡＮＰＡＰＩＬＬＯＭＡＶＩＲＵＳ（ＨＰＶ）ＩＮＴＨＥＮＯＲＭＡＬＡＮＤＡＢＮＯＲＭＡＬＣＥＲＶＩＣＡＬＳＡＭＰＬＥＳＺｈａｎｇＷｅｉ;张伟;ＪｉｎＳｈｕｎｑｉａ...     

Quantitative analysis of technetium 99m 2-methoxyisobutyl isonitrile single-photon emission computed tomography and isosorbide dinitrate infusion in assessment of myocardial viability before and after revascularization

Background

Assessment of viable myocardium in territories of hypoperfused myocardium is important for predicting functional recovery after revascularization. This study was designed to evaluate quantitative analysis of ^99mTc-labeled 2-methoxyisobutyl isonitrile (MIBI) myocardial perfusion imaging combined with isosorbide dinitrate (ISDN) infusion to detect myocardial viability in patients with chronic coronary artery disease before and after revascularization.

Methods and Results

Twenty-seven consecutive patients with previous myocardial infarction and left ventricular dysfunction (left ventricular ejection fraction 35.2%±13.5%) referred for coronary artery bypass (CABG) were studied with ^99mTc-labeled MIBI single-photon emission computed tomograpy at rest and during ISDN infusion before CABG followed by resting imaging after CABG. Quantitative analysis was performed with circumferential profiles. Left ventricular function (global and regional) was assessed by radionuclide ventriculography before and after CABG. Out of 212 abnormal perfusion segments with resting ^99mTc-labeled MIBI SPECT, 99 segments (47%) showed improved uptake of ^99mTc-labeled MIBI during ISDN infusion. The mean ratio of myocardial uptake was 0.58±0.25 (resting 0.53±0.23; p<0.05). After CABG, of 212 segments with hypoperfusion, 108 segments (51%; p>0.05 vs ISDN) showed improved uptake of ^99mTc-labeled MIBI. The mean ratio of myocardial uptake was 0.60±0.26 (resting 0.53±0.23; p<0.05). The concordance between the improvement of post-CABG wall motion and that of pre-CABG ISDN perfusion imaging was 83%, between the improvement of wall motion and perfusion imaging after CABG 94%, and between the improvement of pre-CABG ISDN and post-CABG perfusion imaging 83%, respectively.

Conclusion

ISDN infusion can improve the uptake of ^99mTc-labeled MIBI in hypoperfused myocardium and increase the efficiency of ^99mTc-labeled MIBI in the detection of viable myocardium in patients with previous myocardial infarction and left ventricular dysfunction.     

一种对阿尔茨海默病模型小鼠认知和记忆功能具有明显改善作用的中药方剂

目的 :探索对阿尔茨海默病 (AD)病人认知和记忆能力具有明显改善作用的中药方剂。方法 :通过Balb/c小鼠侧脑室微量注射聚集态 β 淀粉样多肽 (β-AP_25-35) ,建立模拟AD的小鼠动物模型 ,并通过行为学实验和脑组织组织化学检测 ,研究了中医经典药方柴胡加龙骨牡蛎汤、当归芍药散和作者自己研制的两种中药复方CHPI和CHPⅡ对该小鼠模型认知和记忆能力的疗效作用。同时 ,以西药脑复康做对照。结果 :CHPⅡ对AD模型小鼠的认知和记忆能力具有明显的改善。结论 :本研究提示从中药中寻找治疗AD的药物具有较好的前景。     

卫星搭载药用植物曼陀罗遗传变异的随机扩增多态性DNA分析

以曼陀罗种子为材料探讨太空环境对药用植物的影响。方法利用返回式卫星搭曼陀罗的种子,返回地面后播于实验田中,应用随机扩增多态性ＤＮＡ（ＲＮＡ（ＲＡＰＤ）分子标记技术分析不同组曼陀罗基因组的变异情况。结果从６５个供试引物中筛选出１５个能够产生可重复多态性增产物的引物。与地面对照组相比,失重组共产生３９条多态性片段,基因组的多态性频率为２３．１％,击中组共产生４５条多态性片段,基因组的多态性频率为２４．     

Principle of evidence-based medicine and its application in clinical trial practice for glutamine and gut permeability

Evidence-based medicine (EBM) was developed from the progress of traditional clinical model trial patterns. EBM was based on well-designed, randomized, double blind, controlled, multiple center trails in order to assess end pont parameters, prognosis parameters (as: mortality, morbidity of complications and hospital stay etc.), quality of life and cost/effect ratio. It has been accepted in developed countries and could be the guidelines for Chinese clinical trials in the future. This article summarized the principle of EBM and attached with a clinical trial sample about effects of glutamine dipeptide on gut barrier function, post-operative complications and the hospital stay.     

单克隆抗体药物治疗肿瘤的研究现状与展望

单克隆抗体 (简称单抗 )药物用于治疗肿瘤的研究已获得重要进展。抗肿瘤单抗药物一般包括单抗治疗剂与单抗偶联物。研究表明 ,单抗药物对肿瘤相关靶点显示特异性结合 ,对肿瘤细胞有选择性杀伤作用并在动物实验有显著的疗效。单抗药物已开始应用于临床肿瘤治疗。抗肿瘤单抗药物研究的发展趋势是继续寻求新的分子靶点、抗体人源化以及偶联物分子的小型化。由于单抗有高度特异性 ,研制单抗药物有巨大的潜力 ,单抗药物将在肿瘤治疗中发挥重要作用。     

大鼠睾丸支持细胞雄激素结合蛋白mRNA在生精周期中的 …

目的 研究大鼠睾丸支持细胞（ｓｅｒｔｏｌｉ ｃｅｌｌ,ＳＣ）雄激素结合蛋白（ＡＢＰ）ｍＲＮＡ水平与曲细精管上皮周期的相关关系。方法 以地高辛标记的大鼠ＡＢＰ ｃＤＮＡ探针在ＳＤ大鼠睾丸冰冻切片上进行原位杂交,应用激光密度扫描系统对阳性信号进行定量。结果 ＡＢＰ ｍＲＮＡ在１－６期维持低水平,７－８期迅速升高达到高峰,９～１１期骤然下降,但仍高于１～４期水平,７－１６期略有回升,随后迅速下降 至１～     

心肌灌注显像剂^99mTc—tetrofosmin的临床前研究

对８名健康志愿者进行９９ｍＴｃｔｅｔｒｏｆｏｓｍｉｎ的临床前试验。采用一天或两天显像方案，行９９ｍＴｃｔｅｔｒｏｆｏｓｍｉｎ运动负荷和静息显像。通过采血和留尿测定药代动力学参数；采用全身扫描及感兴趣区等技术进行人体分布、靶／非靶比值、有效显像剂量和显像方案研究；依ＭＩＲＤ法估算各种用药情况下的内照射吸收剂量，进行辐射安全评价。结果：９９ｍＴｃｔｅｔｒｏｆｏｓｍｉｎ符合一次静脉给药的药代动力学二室模型，血药总清除率为１２７０ｍｌ／ｍｉｎ；心肌摄取较高，以百分注射剂量（％ＩＤ）为单位，给药后５分钟和６０分钟，运动负荷显像分别为３４０±０１３和２３６±０１９，静息显像则为３１１±１０２和２２２±０６８，前者摄取略高；在２７０～９２５ＭＢｑ给药剂量范围内，一天或两天方案的平面及ＳＰＥＣＴ显像图同样清晰，肝和肺本底低；内照射吸收剂量符合安全标准。临床前试验证明，９９ｍＴｃｔｅｔｒｏｆｏｓｍｉｎ安全有效，这为临床应用提供了依据。     

核素显像和B超测算甲状腺重量的对比研究

对照研究核素显像和Ｂ超测算甲状腺重量的相关性，为临床提供较准确及简易的方法。３６３例甲亢病人１３１Ｉ治疗前分别进行γ显像和Ｂ超检查，以测算甲状腺体积（重量），其中６５例弥漫性甲状腺肿合并甲亢病人１３１Ｉ治疗后６个月重复两种检查。３６３例病人显像和Ｂ超测算甲状腺重量相关良好（ｒ＝０９３，Ｐ＜００１），总体上显像所得重量平均值大于Ｂ超值，腺体厚度是影响测算结果的主要因素；１３１Ｉ治疗后腺体厚度缩小最著，显像值大于Ｂ超值更明显。甲状腺重量测算在一定范围内两种方法可互相替代。１３１Ｉ治疗后，Ｂ超测定值为准。存在结节时，以显像为优。     

树突状细胞与卵巢癌细胞的融合及体外抗肿瘤作用的研究

目的 :比较脐血及以卵巢癌患者外周血来源的树突状细胞 (DC)的特点 ,研究DC 卵巢癌融合瘤苗的体外免疫应答效果。方法 :从脐血及卵巢癌患者外周血中诱导扩增DC ,从数量、形态、细胞表面标志及刺激增殖活性方面进行比较。体外培养卵巢癌患者癌细胞 ,将其与脐血DC在聚乙二醇 (PEG)介导下融合 ,活化自体T细胞 ,MTT法检测杀伤效果。结果 :体外诱导卵巢癌患者外周血DC ,每 2 0ml血能够获得 (0 .6～ 1.6 )× 10 6 个细胞 ;体外诱导脐血DC ,每 2 0ml血能够获得 (1.8～ 3.5 )× 10 6 个细胞 ,二者有明显差异 (P<0 .0 5 )。卵巢癌患者外周血DC在混和淋巴细胞反应 (mixedlymphocytereaction ,MLR)中显示了更为显著的刺激增殖活性。两者表达高水平的MHCII类分子和共刺激分子。经脐血DC 自体卵巢癌融合细胞活化的T细胞 ,对卵巢癌细胞株细胞的杀伤没有增加 ,而增强了对自体卵巢癌细胞的杀伤力。结论 :由脐血诱导可以获得更多数量的DC。脐血DC与自体卵巢癌细胞融合 ,能使肿瘤相关抗原有效提呈 ,激活T细胞 ,使它成为抗原特异性CTL ,有效杀伤自体癌细胞