趋化因子BLC表达载体构建及在肿瘤细胞中的表达

目的 建立真核表达重组体pcDNA-BLC的稳定转染细胞株,为研究趋化因子BLC的抗肿瘤免疫作用机制奠定基础。方法 以小鼠脾脏组织总RNA为模板,通过RT-PCR扩增BLC全长cDNA,并将扩增的cDNA片段插入pcDNA3．1( )真核表达质粒,构建重组质粒pcDNA-BLC,重组子经限制性内切酶酶切分析及测序鉴定后,用脂质体转染技术导入Colon26细胞,经G418筛选建立稳定转染细胞株。用免疫印迹法(Western Blot)鉴定转染细胞表达的蛋白质,证实BLC存在。用趋化实验证实转染细胞株表达的BLC有生物学活性。结果 真核表达重组体pcDNA-BLC构建成功,pcDNA-BLC稳定转染细胞株表达有生物学活性的BLC。结论 成功建立了BLC的稳定转染细胞株,为研究BLC的抗肿瘤免疫作用机制继而发展肿瘤疫苗奠定了基础。     

咪达唑仑复合输注瑞芬太尼用于老年患者结肠镜检查的效果观察

目的对咪达唑仑复合瑞芬太尼麻醉方法在老年结肠镜检查患者中的应用进行分析研究。方法将我院接受结肠镜检查的老年患者分为两组,分别接受咪达唑仑复合瑞芬太尼麻醉（M组）和异氟烷复合瑞芬太尼麻醉（E组）,比较两组的麻醉效果。结果 M组的血气指标与E组之间存在明显差异,P〈0.05。结论咪达唑仑复合输注瑞芬太尼麻醉方法在老年结肠镜检查患者中的应用是可行的,对患者的血气运行影响较小,值得临床应用。     

人正常卵巢及卵巢癌腺苷酸环化酶活性研究

以人正常卵巢皮质层及手术切除的卵巢癌组织为材料,分别分离纯化细胞膜,测定膜蛋白的腺苷酸环化酶(AC)活性。结果:正常卵巢细胞膜AC活性为67±8U/mg蛋白;卵巢癌细胞膜AC活性明显高于正常,平均活性为234±86U/mg蛋白;卵巢癌中粘液性囊腺癌细胞膜AC活性高于浆液性囊腺癌者。     

Increased expression of receptor activator of nuclear factor-κB ligand in osteoblasts from adolescent idiopathic scoliosis patients with low bone mineral density

Persistent generalized low bone mineral density (BMD) has been reported in patients with adolescent idiopathic scoliosis (AIS).However,the exact mechanisms and causes of the low BMD in AIS patients are largely unknown.The purpose of this study was to examine the relationship between the receptor activator of NF-κB ligand (RANKL)/osteoprotegerin (OPG) levels in osteoblasts (OBs) from AIS patients with low BMD and with comparison made between the patients and controls.Twenty AIS patients and eight age-matched controls were included in the present study.The BMD of lumbar spine and proximal femur was measured in all subjects.OBs from the cancellous bone of each subject was harvested and primarily cultured.The mRNA and protein expression of RANKL and OPG in OBs was detected by RT-PCR and Western blotting.The results showed BMD was lower in AIS patients than in controls.A significantly higher mRNA and protein expression of RANKL was observed in OBs from AIS patients,while no significant difference was found in the expression of OPG between AIS patients and controls.As a result,RANKL/OPG ratio in patients with AIS was remarkably higher than controls.Our study preliminarily demonstrated expression of RANKL was higher in OBs from AIS patients with low BMD as compared with controls,suggesting the unbalanced RANKL/OPG ratio caused by an over-expression of RANKL in OBs may be responsible for the low BMD in AIS patients.     

农村妇儿肺通气功能免疫水平的配对分析

用配对比较的方法,探讨厨房位置和燃料不同对农村妇儿肺通气功能免疫水平的影响规律,结果是家庭月耗煤多的妇儿FEV1.0％、儿童唾液溶菌酶、血清IgG含量偏低;炉灶置宅内耗煤多的家庭儿童IgA含量偏高。说明合理布局厨房位置、设置排烟道及精选燃料,可大大改善室内空气质量,保护妇儿健康。     

早期间断高容量血液滤过对群蜂蜇伤横纹肌溶解患者预后及炎症因子的影响

目的 探讨早期间断高容量血液滤过对群蜂蜇伤后出现横纹肌溶解患者预后及炎症因子的影响.方法 选取2006年1月至2014年10月该院急诊科收治的119例群蜂蜇伤出现横纹肌溶解的患者分为两组,A组:蜂蜇伤24 h后接受血液滤过;B组:蜂蜇伤后进行早期血液滤过(蜂蜇伤24 h内),比较两组患者的急性肾损伤和多器官功能障碍综合征的发生率、病死率、平均住院时间,以及蜂蜇伤后第3、7、10天血液主要生化指标及炎症因子变化.结果 与A组比较,B组急性肾损伤与多器官功能障碍综合征的发生率、病死率明显下降(P＜0.05),平均住院时间缩短[(14.6±6.3)d vs.(19.2±7.1)d,P＜0.05];B组患者在蜂蜇伤后血清肌酸激酶、肌酸激酶同工酶、肌酐、降钙素原、高迁移率族蛋白B1、总胆红素及血红蛋白恢复较A组快(P＜0.01);B组患者降钙素原水平与高迁移率族蛋白B1、肌酸激酶、肌酐、总胆红素呈正相关(P＜0.05).结论 对群蜂蜇伤出现横纹肌溶解的患者进行早期间断高容量血液滤过可降低炎症因子水平及改善预后,提高生存率.     

CT诊断上颌窦疾病的研究

笔者回顾分析了ＣＴ诊断的５３例上颌窦疾病，经手术病理证实。ＣＴ扫描提示上颌窦炎性病变２３例，息肉样病变７例，囊性病变９例，良性肿瘤４例，恶性肿瘤９例，骨纤维异常增殖症１例。与病理诊断对比基本符合，仅１例（２％）为假阳性。在诊断上颌窦疾病方面，ＣＴ可以解决一些传统难题，如提高对窦壁周围组织估计的正确性，可证实肿瘤对翼部、咽部及鼻腔的侵犯，有助于手术方案的制定。由于ＣＴ密度分辨率高，超越了平片及多轨迹体层，得以确定软组织、骨壁及含气腔的隐匿性变化，加上增强扫描可推测病变为血管性或非血管性。对于鉴别囊肿、脓肿、良恶性肿瘤等均起到重要作用。