Use of Platelet Indices for Determining Illness Severity and Predicting Prognosis in Critically Ⅲ Patients

Background:Decreased platelet (PLT) count is one of the independent risk factors for mortality in intensive care unit (ICU) patients.This study was to investigate the relationship between PLT indices a...     

Protective effect of bone marrow mesenchymal stem cells on PC12 cells apoptosis mediated by TAG1

Objective: This study aims to explore the protection effect of bone marrow mesenchymal stem cells (BMSCs) on PC12 cells apoptosis mediated by transient axonal glycoprotein 1 (TAG1). Methods: PC12 cells were divided into control group, Aβ_25-35 group and BMSCs + Aβ_25-35 group. The effects of BMSCs on PC12 cells treated by Aβ_25-35 were detected using MTT, Hoechst 33258 and Annexin V-FITC/PI staining methods. The expression levels of TAG1, β-amyloid precursor protein (APP), AICD and p53 were determined by RT-PCR and Western blotting methods. The expression levels of Bax and Bcl-2 were determined by Western blotting method. The activity of Caspase 3 was detected by spectrophotometric method. Results: MTT results showed that cell activity decreased after the treatment of 20 μM Aβ_25-35 for 48 h (P<0.01) while it increased in BMSCs + Aβ_25-35 group (P<0.01). Hoechst 33258 and Annexin V-FITC/PI staining results showed that Aβ_25-35 could induce the apoptosis of PC12 cells while the apoptosis of PC12 cells was inhibited in BMSCs + Aβ_25-35 group. RT-PCR and Western blotting methods showed that 20 μM Aβ_25-35 could increase the expression levels of TAG1, APP, AICD and p53 (P<0.01) while they decreased in BMSCs + Aβ_25-35 group (P<0.01). 20 μM Aβ_25-35 could increase the expression levels of Bax and decrease the expression levels of Bcl-2 (P<0.01), while the expression levels of Bax decreased and the expression levels of Bcl-2 increase in BMSCs + Aβ_25-35 group (P<0.01). 20 μM Aβ_25-35 could enhance Caspase 3 activity while it decreased in BMSCs + Aβ_25-35 group (P<0.01). Conclusions BMSCs with Aβ_25-35 could inhibit the apoptosis of PC12 cells, which maybe related with TAG1/APP/AICD signal pathway.     

脑缺血后神经细胞黏附分子和生长相关蛋白-43的表达与神经功能恢复的关系

目的 观察大鼠局灶性脑缺血再灌注后神经细胞黏附分子-43（NCAM）和生长相关蛋白（GAP-43）基因表达在神经功能恢复过程中的作用。方法 应用线栓法建立大鼠大脑中动脉阻塞（MCAO）再灌注模型。采用Bederson神经功能评分法评价脑缺血90min再灌注2h、12h、1d、2d、3d、7d和14d等时间点大鼠神经功能情况，采用原位杂交技术检测NCAM mRNA和GAP-43 mRNA的表达。结果 大鼠脑缺血再灌注后，神经功能评分于再灌注2d开始降低，神经功能逐渐恢复。在皮质区和纹状体区，脑缺血侧GAP-43 mRNA表达于再灌注12h和2d出现峰值，以后逐渐降低，至14d恢复至假手术组水平。皮质区NCAM mRNA的表达于再灌注2h后开始增强，12h后达高峰；纹状体区NCAM mRNA的表达于再灌注后2h时开始增强，1d后达高峰，以后逐渐减少，14d降至基础水平。结论 脑缺血再灌注后，NCAM的表达可能参与了脑细胞的修复过程，GAP-43 mRNA的表达增强可能与损伤神经的功能恢复有关。     

Primary duodenal tuberculosis misdiagnosed as tumor by imaging examination: A case report

BACKGROUNDPrimary duodenal tuberculosis is very rare. Due to a lack of specificity for its presenting symptoms, it is easily misdiagnosed clinically. Review of the few case reports and literature on the topic will help to improve the overall understanding of this disease and aid in differential diagnosis to improve patient outcome.CASE SUMMARYA 71-year-old man with a 30-plus year history of bronchiectasis and bronchitis presented to the Gastroenterology Department of our hospital complaining of intermittent upper abdominal pain. Initial imaging examination revealed a duodenal space-occupying lesion; subsequent upper abdominal contrast-enhanced computed tomography indicated duodenal malignant tumor. Physical and laboratory examinations showed no obvious abnormalities. In order to confirm further the diagnosis, electronic endoscopy was performed and tissue biopsies were taken. Duodenal histopathology showed granuloma and necrosis. In-depth tuberculosis-related examination did not rule out tuberculosis, so we initiated treatment with anti-tuberculosis drugs. At 6 mo after the anti-tuberculosis drug course, there were no signs of new development of primary lesions by upper abdominal computed tomography, and no complications had manifested.CONCLUSIONThis case emphasizes the importance of differential diagnosis for gastrointestinal diseases. Duodenal tuberculosis requires a systematic examination and physician awareness.     

何氏养肾方对肾病综合征大鼠模型的抗炎作用

【目的】探讨何氏养肾方对阿霉素所致肾病综合征大鼠的抗炎作用。【方法】采用一次性尾静脉注射阿霉素建立肾病综合征大鼠模型。将59只造模成功的大鼠,随机分为模型组(N=11),阳性对照组(N=12),中药高、中、低剂量组(各组N=12),另选取10只正常大鼠为正常组。造模2周后,开始给药,正常组、模型组大鼠给予等体积生理盐水灌胃;阳性对照组给予贝那普利片水溶液灌胃,前15 d剂量为10 mg·kg-1·d-1,后15 d剂量为20 mg·kg~(-1)·d~(-1);中药高、中、低剂量组大鼠给予何氏养肾方水煎液灌胃,剂量分别为33.26、16.63、8.32 g·kg~(-1)·d~(-1);用药时间持续30 d。治疗期间观察大鼠一般情况;给药结束后,应用生化分析仪测定各组大鼠24 h尿蛋白定量、尿蛋白、尿肌酐水平,采用酶联免疫吸附(ELISA)法检测各组大鼠血清超敏C反应蛋白(Hs-CRP)表达水平,采用免疫组化法检测各组大鼠肾组织细胞间粘附分子-1(ICAM-1)、血管细胞粘附分子-1(VCAM-1)表达。【结果】造模后大鼠体质量增长较正常组均显著减缓(P0.01)。与正常组比较,模型组大鼠24 h尿蛋白定量、血清Hs-CRP、肾组织ICAM-1、VCAM-1表达水平均显著升高(P0.05或P0.01);与模型组比较,阳性对照组和中药高剂量组大鼠24 h尿蛋白定量显著降低(P0.05),阳性对照组和中药各治疗组大鼠血清HsCRP、肾组织ICAM-1、VCAM-1表达水平显著降低(P0.05或P0.01)。【结论】何氏养肾方对阿霉素肾病综合征大鼠有一定的抗炎作用,其机制可能与降低肾组织ICAM-1、VCAM-1表达有关,其中高剂量的何氏养肾方疗效更好。     

产后子痫性脑病的MRI表现

目的:探讨产后子痫性脑病的MRI表现.方法:回顾性分析产后24 h内发病的14例子痫患者的临床和影像学资料,其中产后血压正常者4例,临床均以抽搐而行颅脑MRI检查,其中DWI及增强扫描各4例,SWI扫描2例.结果:MRI示病灶主要位于大脑皮层下白质,脑内其它区域亦可受累,呈基本对称分布.T,WI呈等或稍低信号,T2WI及FLAIR呈高信号.DWI扫描中3例均为高信号,1例病灶呈高、低两种信号.增强扫描除1例线状强化外,余均未见明显强化.SWI扫描中1例呈颅内多发点状出血,平扫并没显示.结论:MRI检查能够明确产后子痫患者脑部病变的部位及性质,同时有助于解释其影像表现的病理基础,从而进一步指导治疗及预防并发症,并纠正既往将其等同于高血压脑病的说法.     

Immediate Repair of Major Abdominal Wall Defect After Extensive Tumor Excision in Patients With Abdominal Wall Neoplasm: A Prospective Review of 27 Cases

Background  

The treatment of abdominal wall neoplasm continues to present a challenging problem because it is not easy to repair the giant defect which is resulted from extensive tumor excision. Some techniques and materials have been reported, but most report a certain technique or material for abdominal wall reconstruction. Therefore, we retrospectively reviewed the treatment of such patients in our department and assessed the reconstruction algorithm in such a situation.     

Efg1 involved in drug resistance by regulating the expression of ERG3 in Candida albicans

The ERG3 gene in Candida albicans was identified as a gene whose mRNA level was higher in the cph1/cph1 efg1/efg1 double mutant than in the wild-type cells. Further study showed that Efg1, but not Cph1, negatively regulated ERG3. Mutations in EFG1 consistently increased the susceptibility of the cells to antifungal agents.