脑梗塞患者血清叶酸维生素B12浓度与同型半胱氨酸及血脂水平的研究

目的探讨本地区脑梗塞患者的血清叶酸、维生素B12（VitB12）与同型半胱氨酸（Hcy）水平及血脂水平的关系。方法应用全自动化学发光免疫法测定115例脑梗塞患者血清叶酸、维生素B12水平，采用荧光定量分析法测定血清同型半胱氨酸水平，采用免疫比浊法测定血脂水平。结果脑梗塞患者血清叶酸水平明显低于对照组（P〈0．001），血清Hcy及甘油三酯（TG）水平明显高于对照组（P〈0．01），而维生素B12及其余所测血脂指标与健康对照组无显著差异（P〉0．05）。结论即时监测血清叶酸、Hcy及TG水平，适当补充叶酸，可早期预防和及时治疗脑血管疾病，降低脑梗塞的发生率及复发率。     

64层螺旋CT在冠状动脉支架置入术后评估中的价值

目的:评价64层螺旋CT在冠状动脉支架置入术后复查中的临床价值。方法:采用64层螺旋CT对27例冠状动脉支架置入术后的患者(共47个支架)进行CT冠状动脉成像。观察支架及其支架血管和非支架血管的通畅性。结果:支架通畅43例,支架内狭窄3个、闭塞1个,支架前后血管狭窄25支(包括两近端狭窄4例),非支架血管狭窄26支。结论:64层螺旋CT比16层螺旋CT观察冠状动脉内支架优越,可作为冠状动脉支架置入术后效果随访观察和了解原有冠心病进展情况的重要手段。     

Nitric oxide and gamma-aminobutyric acid as regulators of neurogenesis in the brain of adult mammals: Models of seizure activity

New neurons are known to be generated in the brain of adult mammals throughout their entire life in the area of the lateral ventricles and the subgranular zone of the dentate gyrus. The regulatory mechanisms of neurogenesis are complex and poorly understood. Numerous studies performed during the last decade have shown that the intensity of generation of new cells in the germinative regions of the brain is significantly influenced by various environmental factors. Pronounced changes in neurogenesis were also found in the models of various pathologies of the central nervous system (such as neurodegeneration, brain ischemia, and epilepsy). This review is focused on the regulation of neurogenesis in the brain of adult mammals in the course of experimental epilepsy. The involvement of nitric oxide and gamma-aminobutyric acid in the regulation of the proliferation and differentiation of brain cells during seizure activity is discussed.     

改良的后腹腔镜肾囊肿去顶术

目的 评估改良的后腹腔镜肾囊肿去顶术(RLRC)的临床应用价值.方法 15例为在减压前完整游离囊肿壁后减压的传统后腹腔镜肾囊肿去顶,12例为术中先行囊肿减压的改良去顶术,两相比较手术时间和出血量.结果 用改良的手术方法可以明显缩短手术时间,但出血量相比较无明显差异.结论 改良后的后腹腔镜肾囊肿去顶术使操作更简单、便捷,并同样安全有效.     

三峡建坝后血吸虫病传播危险因素研究Ⅲ库区血吸虫病监测方案的研究

目的了解三峡库区血吸虫病传播危险因素,为三峡库区血吸虫病动态监测提供技术方案。方法在三峡库区进行钉螺生存模拟试验,调查库区流动人口、家畜血吸虫病传染源和钉螺输入库区的潜在危险因素,以及建坝后社会经济发展变化对血吸虫病传播的潜在影响因素,找出库区血吸虫病监测的重点。结果钉螺在三峡库区的适宜环境中能够生长繁殖;血吸虫病传染源主要是往返于血吸虫病流行区的流动人口;从血吸虫病疫区引进花草树木和牲畜,存在将钉螺和动物传染源输入库区的可能;库区社会经济发展可使血吸虫病传入的危险增加,三峡库区已成为血吸虫病的潜在流行区。结论三峡库区血吸虫病监测工作重点应是流动人口、引进的牲畜等血吸虫病传染源和钉螺输入因素的监测。     

人胎盘组织液抗炎药效学研究

目的研究人胎盘组织液的主要药效作用。方法建立二甲苯所致小鼠耳肿胀及大鼠棉球肉芽肿的药理模型，观察人胎盘组织液对炎症模型动物的抗炎作用。结果与模型对照组相比，连续7d肌肉注射0．1mL/kg剂量的人胎盘组织液对二甲苯所致小鼠耳肿胀起到明显抑制作用，且差异显著（P〈0．01）；连续6d肌肉注射0．1mL／kg剂量的人胎盘组织液对大鼠棉球肉芽组织增生起到明显抑制作用，且差异显著（P〈0．01）。结论人胎盘组织液具有明显的抗炎作用。     

细菌素产生菌的筛选及其细菌素的分离纯化

从香肠中分离得到一株产细菌素的乳酸片球菌，其发酵液经硫酸铵沉淀，CM—Sephadex C50阳离子交换柱层析后，得到的细菌素样品通过SDS—PAGE证明是一条带，分子量约20．83ku，该细菌素对热及酸碱稳定，易被酶降解而失去活性，对许多革兰氏阳性茵有较强的抑制作用，而对革兰氏阴性茵、酵母和霉没有作用。     

应用胶原凝胶构建组织工程化皮肤的研究

目的探讨以胶原凝胶为支架材料构建组织工程化皮肤的可行性。方法体外分离、培养人皮肤表皮细胞和成纤维细胞;利用自制的胶原蛋白制成胶原凝胶作为组织工程支架材料;在成功构建人工真皮的基础上种植表皮细胞,构建复合人工皮肤;采用HE染色与免疫组织化学的方法对复合人工皮肤进行组织学检测。结果HE染色可见,构建的复合人工皮肤具有表皮和真皮双层结构;免疫组织化学染色显示,Ⅳ型胶原、纤维连接蛋白和层粘连蛋白阳性,在形态结构上与正常皮肤相似。结论培养的人表皮细胞和成纤维细胞种植于胶原凝胶支架上,气-液界面培养可构建出具有类似正常皮肤结构的组织工程化皮肤。     

Comparison of clinical outcomes of frozen-thawed blastocysts transfer in natural and hormonally controlled cycles

Objectives:To assess the clinical outcomes of frozen-thawed blastocysts transfer in natural and hormonally controlled cycles.Methods:A retrospective analysis of natural and hormonally controlled cycle for 246 frozen-thawed blastocyst transfer cycles,the clinical pregnancy rate,implantation rate,early abortion rate were compared.Results:Of the 192 hormonally controlled cycles,the cancel rate,clinical pregnancy rate per ET,implantation rate and abortion rate were 7.3%(14/192),53.9%(96/178),38.8%(131/338)and 11.5%(11/96)respectively,whereas in 54 natural cycles,these rates were 16.7%(9/54),68.9%(31/45),52.9%(45/85)and 16.1%(5/31)respectively.There was no significant difference between the two groups with regard to the clinical pregnancy and abortion rate per ET,but the cancel rate and implantation rate were higher in natural cycles.However,the pregnancy and implantation rates of patients without PCOS in hormonal control cycles(57.2%,40.9%)were similar with those in natural cycles(P>0.05).Conclusion:These findings suggested that both hormonally controlled and natural cycles had similar pregnancy outcomes in frozen-thawed blastocysts transfer.     

不育患者血清精子蛋白17抗体的检测及临床意义

目的:检测抗精子抗体(AsAb)阳性不育患者血清中抗精子蛋白17(Sp17)的抗体,探讨该抗体在免疫性不育血清学诊断和免疫避孕方面的潜在应用价值。方法:用重组人Sp17作为抗原,ELISA法检测62例AsAb阳性血清中Sp17抗体阳性率及滴度,分析AsAb中抗Sp17的含量。结果:AsAb阳性血清中Sp17抗体阳性率为56.5%,男女之间差异无显著性。Sp17抗体占AsAb的(10.09±7.45)%,结果具有统计学意义(P<0.05)。结论:Sp17是重要的精子抗原组分,血清中Sp17抗体的检测可作为不育患者辅助诊断指标,同时也提示Sp17可能是一种免疫避孕候选抗原疫苗。