Ets-1、MMP-1及TIMP-1在膀胱移行细胞癌中的表达

目的研究Ets-1、基质金属蛋白酶1(MMP-1)及基质金属蛋白酶1抑制物(TIMP-1)在膀胱移行细胞癌(BTCC)中的表达及意义。方法用免疫组化方法检测40例BTCC组织和12例正常膀胱黏膜组织中Ets-1、MMP-1及TIMP-1的表达;分析Ets-1与BTCC临床病理特征间的关系;研究BTCC中MMP-1、TIMP-1表达与Ets-1表达的相关性。结果①Ets-1在BTCC中高度表达,阳性率为82.5%(P<0.01),且随BTCC临床分期和病理分级的升高而增加,肿瘤复发组高于无复发组,肿瘤转移组高于无转移组(P<0.05)。②MMP-1阳性表达率膀胱癌组(85.0%)明显高于对照组(58.3%)(p<0.05);TIMP-1阳性表达率对照组(83.3%)明显高于膀胱癌组(47.5%)(P<0.05)。③MMP-1与Ets-1表达呈正相关(Rs为0.824,P<0.01),而TIMP-1与Ets-1表达呈负相关(Rs为-0.821,P<0.01)。结论①Ets-1在BTCC中高度表达,并随BTCC分期分级升高而增加;Ets-1与BTCC转移及复发密切相关。②BTCC中Ets-1上调MMP-1表达,而下调TIMP-1表达,从而参与BTCC侵袭与转移。     

热性惊厥患儿血清褪黑素水平和细胞免疫功能的变化及其临床意义

Objective To investigate the changes of melatonin and cellular immunological function in children with febrile seizures and its clinical significance. Methods 50 children, including 23 cases with complex febrile seizure (CFS) and 27 cases with simple febrile seizure (SFS) , and 25 cases with upper respiratory infections children selected as control group were enrolled in this study. Serum melato- nin was measured by enzyme-linked immunosorbent assay (ELISA) and cellular immunological function was measured by flow eytomcter. Results The levels of serum melatonin in the 3 groups of CFS, SFS, control were(14. 91±2. 61) ng/L, (20. 72±2. 54) ng/L, (23.93± 2. Ol) ng/L, respectively. The melatonin levels in CFS children were significantly decreased than that in control group and SFS children (P <0. O1). CD3 + ,CD4 +, the ratio of CD4 + /CD8 + and CD8 + in CFS group were significantly decreased than that in control group and SFS group (P <0.01). The ratio of CD4 +/CD8 + in SFS group was significantly decreased than that in control group (P <0.05), but CD3 + ,CD4 + and CD8 + had no statistics significance among these groups(P >0. 05). The serum rnelatonin level were positive related withdecreaseddegreeofCD3+,CD4+ andtberatioofCD4+ /CDS+ (r≥0. 472, P <0.05). Conclusion The disorder cfcellular immunological function was possible related with the loss of serum melatonin, and the loss of serum melatonin maybe one of the reasons for febrile seizures relapse and brain injured.     

原子吸收光谱法测定糖尿病患者血清锌、镁、钙含量的研究

采用原子吸收光谱法测定了30例糖尿病患者血清锌、镁、钙的含量,并与30例正常人相比较。结果表明,其锌和镁较正常人为低(P<0.05),但钙与正常人无显著性差别。另外,本文还对锌、镁与糖尿病的关系进行了探讨。     

高血压病患者B型超声主动脉壁厚度与血清载脂蛋白的相关性

采用 Mark-600型超声诊断仪测量了128例高血压病患者主动脉壁厚度(AWT),并同时检测了血脂指标,结果显示,高脂血症组血清 apoB 及 AWT 均显著高或厚于血脂正常组(P<0.01),其 apoAI/apoB 比值显著低于血脂正常组(P<0.01),临床合并冠心病的患病率亦显著高于血脂正常组(P<0.05)。相关性分析显示,AWT 与 apoB(r=0.338)呈直线正相关,与 apoAl(r=-0.385)及apoAl/apoB(r=-0.540),呈直线负相关,(P 均<0.01)。经逐步回归分析,筛选对 AWT 有显著作用的血脂指标,结果依次为 apoAl/apoB、apoB。     

头孢托仑酯随机双盲对照治疗细菌性感染临床评价

为评价头孢托仑酯（ＭＥ１２０７）治疗细菌性感染的有效性和安全性，采用随机双盲对照试验和开放试验方法共治疗８０例患者，其中ＭＥ１２０７（Ａ药）与头孢克肟（Ｂ药）随机双盲各治疗２０例（呼吸系统和泌尿系统各１０对），ＭＥ１２０７开放试验治疗４０例（呼吸系统２０例、泌尿系统１０例、皮肤软组织感染１０例）。每日４００ｍｇ，疗程７～１４ｄ。ＭＥ１２０７痊愈率和有效率在对照试验中为８０％和９５％，在开放试验中为７５％和９２．５％，总痊愈率为７６．７％，总有效率为９３．３％，细菌培养阳性率为１００％，细菌清除率在对照试验和开放试验中分别为９５％和９２．５％。纸片法药敏试验中ＭＥ１２０７敏感株百分率为１００％，与头孢哌酮相同，而优于头孢克肟和头孢克洛，明显优于阿莫西林（４８．８％）。ＭＥ１２０７６０例中６例出现不良反应，表现为消化道反应３例，转氨酶升高２例，凝血酶原时间延长１例。与对照药头孢克肟相比在痊愈率、有效率、细菌清除率及不良反应发生方面均无显著性差异（Ｐ＞０．０５）。ＭＥ１２０７在每日４００ｍｇ剂量下治疗轻、中度细菌感染安全、有效。     

Prion protein is ubiquitinated after developing protease resistance in the brains of scrapie-infected mice

Although the key event in the pathology of prion diseases is thought to be the conversion of cellular prion protein (PrP(C)) to the protease-resistant scrapie species termed PrP(Sc), the factors that contribute to neurodegeneration in scrapie-infected animals are poorly understood. One probable determinant could be when the accumulation of PrP(Sc) in infected brain overwhelms the ubiquitin-proteasome system and triggers the degenerative cascade. In the present study, it was found that in mouse brains infected with the ME7 scrapie strain, the level of ubiquitin protein conjugates increased significantly at approximately 144 days post-infection (pi) when clinical signs first become apparent. This elevation correlated with the detection of protease-resistant PrP(Sc) and a decline in two endopeptidase activities associated with proteasome function. However, ubiquitination of PrP was only detected at the terminal stage, 3 weeks after the development of clinical symptoms (approximately 165 days pi). These results suggest that ubiquitination of PrP is a late event phenomenon and this conjugation occurs after the formation of protease-resistant PrP(Sc). Whether this post-translational modification and the impairment of proteasome function are pivotal events in the pathogenesis of prion diseases remains to be determined.     

生长激素对糖尿病及其微血管病变的影响

目的 :探讨生长激素对糖尿病及其微血管病变的影响。方法 :采用放射免疫法测定 6 7例Ⅱ型糖尿病患者及 18例正常人的血清生长激素 (GH)及胰岛素 (INS)水平。结果 :糖尿病合并微血管病变组 ,空腹生长激素 (FGH)明显高于正常对照组 (P <0 .0 1)及糖尿病无微血管病变组 (P <0 .0 1)。糖尿病无微血管病变组的FGH与正常对照组的FGH相比未见明显差异 (P >0 .0 5 )。餐后 2h的生长激素 (PGH)在 3组之间均无显著差异 (P >0 .0 5 )。FGH与HbA1c、空腹血糖 (FBS)呈正相关 (r=0 .5 46 ,P <0 .0 1;r=0 .437,P <0 .0 1) ,与UAER呈正相关 (r=0 .486 ,P <0 .0 1) ;FGH与病程无相关 (r=0 .2 2 ,P >0 .0 5 ) ,与FINS无相关 (r =- 0 .0 2 9,P >0 .0 5 )。结论 :GH水平的增高 ,与糖代谢紊乱有关 ,参与了糖尿病微血管病变的发生。     

肝移植病人术中血管外肺水变化的研究

目的 通过脉搏指示剂连续心输出量(PiCCO)监护仪对肝移植病人术中各个阶段血管外肺水(EVLw)的监测,了解其变化规律,分析可能影响EVLW的因素.方法 24例因终末期肝病行原位肝移植手术的患者,左侧肱动脉穿刺并置入5F热稀释导管,连接到PiCCO监护仪,监测血管外肺水、胸腔内血容量指数等参数.分别于手术开始前、无肝前期末、无肝期30 min、新肝期60 min、新肝期120 min和手术结束时记录上述各个血流动力学指标.结果 EVLW术前基础值明显高于正常值,术中虽有逐渐增加的趋势,但与术前相比差异无统计学意义(P>0.05),EVLW与ITBV呈正相关(r=0.822,P<0.05).结论 肝移植病人术中EVLW变化轻微;肝移植术中EVLW明显高于正常值,这主要与循环血容量增加有关.     

肝移植病人术中血管外肺水变化的研究

目的 通过脉搏指示剂连续心输出量(PiCCO)监护仪对肝移植病人术中各个阶段血管外肺水(EVLw)的监测,了解其变化规律,分析可能影响EVLW的因素.方法 24例因终末期肝病行原位肝移植手术的患者,左侧肱动脉穿刺并置入5F热稀释导管,连接到PiCCO监护仪,监测血管外肺水、胸腔内血容量指数等参数.分别于手术开始前、无肝前期末、无肝期30 min、新肝期60 min、新肝期120 min和手术结束时记录上述各个血流动力学指标.结果 EVLW术前基础值明显高于正常值,术中虽有逐渐增加的趋势,但与术前相比差异无统计学意义(P>0.05),EVLW与ITBV呈正相关(r=0.822,P<0.05).结论 肝移植病人术中EVLW变化轻微;肝移植术中EVLW明显高于正常值,这主要与循环血容量增加有关.