血清胆红素水平与冠状动脉粥样硬化的关系

目的：研究血清胆红素水平与冠状动脉粥样硬化的关系。方法：选取66例临床疑诊冠心病而择期行冠状动脉造影的病人。同时记录患者血清总胆红素。按照血管狭窄支数以及Gensini评分来评价冠脉血管病变严重程度。结果：Gensini积分的第一4分位组患者血清总胆红素水平明显高于第二、三、四4分位组（P〈0.05）。结论：血清总胆红素与冠脉病变的严重程度呈一定的负相关性。     

ICU院内感染医源性危险因素分析

目的分析重症监护病房（ICU）院内感染的发病情况,寻找医源性危险因素。方法以2005年6月至2006年12月间我院ICU收治的168例次住院超过48小时的全部病例为研究对象,根据病原学检查确定其中45例次为医院感染,并进行危险因素的统计处理。结果ICU院内感染发病率为26．8％,最常见的感染是医院获得性肺炎（HAP）,其次为尿路感染;危险因素为侵袭性医疗操作（如机械通气、中心静脉置管、保留导尿、鼻饲等）和药物治疗（如抗生素使用种类、使用时间、免疫抑制剂、制酸剂等）。结论尽量减少或避免医源性危险因素的产生和损伤,是有效预防和控制ICU院内感染的关键。     

髋部减压术配合中药治疗股骨头缺血性坏死52例

目的：观察髋部减压术配合中药治疗股骨头缺血性坏死的临床疗效。方法：52例患者均采用髋部减压，即股骨头髓芯减压和髋关节腔内减压（双减压）术，并配合中药三期辨证治疗。结果：52例患者均获得随访，随访时间12个月～30个月，其中优39例，良10例，差3例，优良率为94．2％。结论：采用股骨头髓芯减压及髋关节腔内减压（即双减压）术，同时结合中药治疗早期股骨头缺血性坏死有显著疗效，是一种良好的治疗方法。     

Low expression of S100P associated with paclitaxel resistance in ovarian cancer cell line

Background Recent studies indicate that S100P expression may be a biomarker that can predict the success of cancer chemotherapy. Whether it is relevant to chemotherapeutics in ovarian cancer is unknown. In this study, we investigated the association of S100P expression with paclitaxel sensitivity in ovarian cancer cell lines. Methods We measured S100P expression and paclitaxel resistance profiles in parent SKOV3 and OVCAR3 cell lines. Then, the two cell lines were transiently transfected with S100P siRNA. We also constructed an OVCAR3 cell clone that stably overexpressed S100P. The effect of S100P expression level on the survival of cells exposed to paclitaxel was measured using the MTT assay. S100P expression was evaluated by semi-quantitative RT-PCR and Western blotting. Significance of differences was calculated using independent samples t-test and one way analysis of variance （ANOVA）. Results Lower S100P expression was associated with a survival advantage in OVCAR3 cells exposed to paclitaxel; the survival advantage in SKOV3 cells was smaller （P 〈0.05）. The survival advantage associated with decreased S100P expression was even greater for SKOV3 and OVCAR3 cells that had been transfected with S100P siRNA before being exposed to paclitaxel （P 〈0.05）. Consistent with this, the OVCAR3 cell clone that was transfected to overexpress S100P was more sensitive to paclitaxel （P 〈0.05）. Conclusions Low S100P expression contributes to drug resistance to paclitaxel in ovarian cancer cell lines. S100P expression thus might be a marker that can predict the effectiveness of paclitaxel based chemotherapy. Such a marker could be helpful in improving individual medication regimens for ovarian cancer patients.     

SPECIFIC IDENTIFICATION OF HERPES SIMPLEX VIRUS IN HUMAN ESOPHAGUS WITH RAPID IN SITU HYBRIDIZATION IN 5 CASES

HUMAN herpes simplex virus esophagitis （HSVE） was first reported in 1940 by Johnson. ^1HSVE usually occurs in immunocompromised patients,such as those with acquired immunodeficiency syndrome （AIDS）, 2-4 malignancies, cutaneous burns, connective tissue diseases, inflammatory bowel disease, those taking immuno-suppressive therapy, and those undergoing organ transplantation,5 etc. In the immunocompetent individuals, HSVE is rare, having been reported in 39 cases and mainly affecting young males^6,7 The aim of this study was to delineate the clinical experience in the diagnosis of HSVE using rapid in situ hybridization and assess the various detection methods.     

食管鳞状细胞癌组织中核干细胞因子基因mRNA的表达

目的 探讨食管鳞状细胞癌组织中核干细胞因子(NS)基因mRNA的表达水平.方法 应用实时定量PCR检测62例食管鳞状细胞癌组织及其配对正常食管黏膜组织(62例)中NS基因mRNA表达水平,分析核干细胞因子mRNA表达水平与食管鳞状细胞癌患者临床病理参数间的关系.结果 62例食管鳞状细胞癌组织中NS基因mRNA表达水平(4.5 ±2.1)高于其配对正常食管黏膜组织(2.1±1.3)表达水平(t=-5.045,P=0.000).NS基因mRNA表达水平与病理分级、浸润深度和淋巴结转移等临床参数有关(均P＜0.05),与性别、年龄、病理类型等参数无关(均P＞0.05).多元线型回归分析显示,临床病理参数在NS基因mRNA表达中起重要作用(P=0.000),NS基因mRNA的表达主要受浸润深度和淋巴结转移的影响(P＜0.05).结论 食管鳞状细胞癌的发生发展和增殖过程中NS基因mRNA起重要作用.     

Inhibiting NF-κB increases cholesterol efflux from THP-1 derivedfoam cells treated with Angll via up-regulating the expression of ATP-binding cassette transporter A1

Objective:To study the role of nuclear factor-kappa B(NF- K B) in cholesterol efflux from THP-I derived-foam cells treated with Angiotensin Ⅱ (Ang Ⅱ ). Methods:Cultured THP-l derived-foam cells were treated with Ang Ⅱ or preincubated with tosyl-phenylalan inechloromethyl-ketone(TPCK) NF-K B inhibitor. The levels of activated NF-K B in the cells were examined by sandwich ELISA. Cellular cholesterol content was studied by electron microscopy scanning and zymochemistry via fluorospectrophotometer and cholesterol efflux was detected by scintillation counting technique. ABCAI mRNA and protein were quantified by RT-PCR and Western blotting. Results:Addition of TPCK to the cells before Ang Ⅱ stimulation attenuated the response of NF- K B p65 nuclear translocation induced by Ang Ⅱ and showed no peak in foam cells group and caused a reduction in cholesterol content and an increase in cholesterol effiux by 24.1%(P < 0.05) and 41.1%(P < 0.05) respectively, when compared with Ang Ⅱ group. In accordance, the ABCAl mRNA and protein were increased by 30% and 19%(P< 0.05) respectively, when compared with Ang Ⅱ group. Conclusion:Ang Ⅱ can down- regulate ABCAI in THP-l derived-foam cells via NF- K B, which leads to less cholesterol effiux and the increase of cholesterol content with the consequence of the promotion of atherosclerosis.     

Inhibiting NF-κB increases cholesterol efflux from THP-1 derived-foam cells treated with AngⅡ via up-regulating the expression of ATP-binding cassette transporter A1

Objective: To study the role of nuclear factor-kappa B(NF-κB) in cholesterol efflux from THP-1 derived-foam cells treated with AngiotensinⅡ(AngⅡ). Methods:Cultured THP-1 derived-foam cells were treated with AngⅡ or preincubated with tosyl-phenylalanine chloromethyl-ketone(TPCK) NF-κB inhibitor. The levels of activated NF-κB in the cells were examined by sandwich ELISA. Cellular cholesterol content was studied by electron microscopy scanning and zymochemistry via fluorospectrophotometer and cholesterol efflux was detected by scintillation counting technique. ABCA1 mRNA and protein were quantified by RT-PCR and Western blotting. Results:Addition of TPCK to the cells before AngⅡ stimulation attenuated the response of NF-κB p65 nuclear translocation induced by AngⅡ and showed no peak in foam cells group and caused a reduction in cholesterol content and an increase in cholesterol efflux by 24.1%(P < 0.05) and 41.1%(P < 0.05) respectively,when compared with AngⅡgroup. In accordance,the ABCA1 mRNA and protein were increased by 30% and 19%(P < 0.05) respectively,when compared with AngⅡ group. Conclusion:AngⅡ can down-regulate ABCA1 in THP-1 derived-foam cells via NF-κB,which leads to less cholesterol efflux and the increase of cholesterol content with the consequence of the promotion of atherosclerosis.     

去白细胞血预充对婴儿体外循环的肺保护作用

目的 研究去白细胞血预充对围体外循环期(CPB)婴儿肺功能的影响.方法 60例＜1岁室间隔缺损患儿,随机分成实验组和对照组,实验组用去白细胞血预充,对照组用常规库血预充.检测 CPB开始前、CPB结束后2、6、12、24和48h 6个时点的氧合指数(OI)、动脉血氧分压/肺泡氧分压(PaO2/PAO2)、肺泡-动脉氧分压差(A-aDO2)和呼吸指数(RI)等肺功能指标.结果 OI、PaO2/PAO2在CPB后2h、6h、12h时点实验组高于对照组(P＜0.01,P＜0.05);A-aDO2在CPB后2h、6h、12h、48h时点实验组低于对照组(P＜0.01,P＜0.05);RI在CPB后6h、12h实验组低于对照组(P＜0.01,P＜0.05).结论 去白细胞血预充可改善围体外循环婴儿早期肺脏的氧合功能,具有良好的肺保护作用.     

Immunogenicity of interleukin 12 and DNA vaccine prime-BCG boost against Mycobacterium tuberculosis

OBJECTIVE: To investigate the immunogenicity of vaccine strategies about human interleukin 12 associated with combined DNA (Ag85A and ESAT-6) prime-BCG boost. METHODS: BALB/c mice were divided into PBS negative control and 4 immunity groups: BCG group, DNA/BCG group, DNA + IL-12/BCG group and DNA/BCG + IL-12 group. All mice received three immunizations at 2-week interval. Specific IgG antibody in serum of mice was determined with indirect ELISA in 4, 6, 8 weeks respectively after final vaccination. The splenic lymphocytes of mice were separated and stimulated with PPD to measure their proliferation by flow cytometry, and to evaluate the production of interferon-gamma (IFN-gamma) in cell suspensions of spleen cells by ELISA. The levels of CD4+ and CD8+ T-cell on surface of spleens lymphocyte were determined by flow cytometry. RESULTS: PPD could stimulate specific IgG responses in 4 immunity groups, and the average valences of 4 groups are 1:80, 1:120,1:160,1:160; the splenic lymphocyte proliferation reactions and IFN-gamma production were detectable in 4 immunity groups, and the most significant response occurred in 12 weeks. DNA + IL-12/BCG group and DNA/ BCG+IL-12 group induced higher production than BCG group and DNA/BCG group (P < 0.05), and the effects between DNA + IL-12/BCG group and DNA/BCG + IL-12 group had little difference. The numbers of CD4+ and CD8+ T-cell in 4 immunity groups were much higher than PBS group (P < 0.05), and DNA+IL-12/BCG group and DNA/BCG+IL-12 group were detected much more CD4+ and CD8+ T-cell than BCG group and DNA/BCG group (P < 0.05). The level of T-cell between DNA + IL-12/BCG group and DNA/BCG + IL-12 group had little difference. CONCLUSION: Interleukin 12 associated with the strategy of priming with the combined DNA vaccines and boosting with attenuated M. bovis vaccine (BCG) could induce much stronger specific cellular immunity compared with simple DNA/BCG or attenuated M. bovis vaccine alone.