Investigation of gene–gene interactions between CD40 and CD40L in Polish multiple sclerosis patients

CD40–CD40L interaction is necessary for the activation of both humoral and cellular immune response and has been suggested to play a role in the pathogenesis of multiple sclerosis (MS). Therefore, we analyzed the combined influence of the CD40 and CD40L variants on MS susceptibility and progression on well-defined Polish population. Our investigation revealed that CT individuals in rs1883832 locus of CD40 possessed almost 1.5-fold higher risk for MS than CC individuals (OR = 1.44; 95%CI = 1.03–2.1; p = 0.032), while this risk for TT individuals was almost 2.5-fold higher (OR = 2.36; 95%CI = 1.19–4.78; p = 0.014).     

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目的评价根管封闭剂iRootSP的根尖封闭效果。方法选择2012年9—12月中国医科大学口腔医学院口腔外科拔除的单根管前牙50颗,随机分为2个实验组（A、B组,每组20颗）和2个对照组（c组为阳性对照组,D组为阴性对照组,每组5颗）。所有牙均常规开髓、拔髓,采用机用ProTaper设备根管至F2。A、B组分别采用根管封闭剂iRootSP加单尖充填技术和根管封闭剂AHPlus加单尖充填技术充填根管,c、D组均不做任何根管充填;4组牙齿均用光固化复合树脂充填髓腔及开髓孔。A、B、c组在除根尖孔2mm外的整个牙根表面均匀涂布指甲油2遍,D组在牙根表面及根尖孔全部涂布指甲油2遍。采用染料渗透法检测根尖微渗漏情况,对各组染料渗透长度进行比较分析。结果A、B组均有不同程度的根尖微渗漏,A组染料渗透长度为（1．62±0．20）mm,B组为（1．80±0．20）mm,两组间差异无统计学意义（P〉0．05）。作为阳性对照的c组,染料渗透长度为（10．75±1．28）mm,几乎渗入牙根全长;作为阴性对照的D组,则无染料渗入牙根。结论根管封闭剂iRootSP的根尖封闭性能与AHPlus相似。由于单尖充填技术操作简便,副损伤小,省时省力,具有良好的临床应用前景。     

异黏蛋白及波形蛋白在食管鳞状细胞癌组织中的表达及其预后的关系

目的分析食管鳞状细胞癌(ESCC)患者异黏蛋白(MTDH)的表达水平,分析与上皮-间质转化(EMT)有关联的指标波形蛋白(Vimentin)的表达水平与ESCC预后的关系。方法采用组织芯片进行免疫组织化学染色,芯片中包含75对食管鳞癌癌组织标本,另含有与食管癌组织相对应的配对癌旁正常食管组织,以距离病灶3 cm为标准,另有30例食管癌组织为不成对的食管癌组织,所有食管癌组织和正常食管组织均来源于组织芯片。采用免疫组织化学SP法分别检测MTDH、Vimentin的表达情况,并且分析MTDH、Vimentin的表达与ESCC临床病理的关系,采用Kaplan-Meier法对MTDH与Vimentin不同表达水平的患者术后生存率的差异进行比较。用Spearman相关性分析MTDH与Vimentin表达水平之间的关系。结果在食管癌细胞中,MTDH的表达明显增多,正常食管上皮细胞中也有少量表达。阳性细胞大部分在胞质表达,在细胞核也有少量的表达,MTDH的阳性表达主要呈浅黄、棕黄色或褐色颗粒。经统计学分析后,MTDH在食管癌组织中的阳性表达率要明显高于配对癌旁正常食管上皮组织中的阳性表达率,差异有统计学意义(P<0.05)。MTDH的表达与临床病理参数关系显示,MTDH在食管癌中的表达与N分期(P=0.016)有关,具体体现在N 1~N 3分期MTDH阳性表达率明显高于N 0分期的患者。Vimentin在食管癌细胞中的表达较多,同时也可表达于少量正常食管上皮细胞,阳性细胞主要为胞质表达,呈褐色、棕黄色或浅黄颗粒。Vimentin在食管癌组织中的表达要明显高于配对癌旁正常食管组织,差异有统计学意义(P<0.05)。另外通过统计Vimentin与食管癌病理特征的关系显示,Vimentin在食管癌组织中的表达与T分期(P=0.019)及肿瘤的体积(P=0.040)有关。Kaplan-Meier法分析显示,MTDH高表达的患者生存时间越短,差异有统计学意义(P<0.05),而高表达Vimentin患者和低表达Vimentin患者二者生存率比较,差异无统计学意义(P>0.05)。Spearman相关性分析结果显示,MTDH与Vimentin在ESCC组织中表达水平呈正相关(r=0.218,P=0.019)。结论MTDH和Vimentin的表达增加可能与食管癌的发生、发展及肿瘤细胞浸润转移密切相关。MTDH对食管癌术后患者判断预后,可能有一定的作用。     

Up-regulation of soluble P-selectin predicates its prognostic value in patients with ankylosing spondylitis

Ankylosing spondylitis (AS) is a chronic inflammatory disease with a high rate of disability. To find a proper prognosis marker is helpful for the treatment of AS. The purpose of this study was to investigate whether soluble P selectin (SP selectin) exerted effects on the prognosis of AS patients. Firstly, we detected the expression level of SP selectin in 85 AS patients and 60 normal subjects using quantitative real-time-polymerase chain reaction (QRT-PCR) assay. The result demonstrated that SP-selectin was over expressed in AS patients compared with healthy controls and the difference was significant (P < 0.05). Chi-square test was used to estimate whether SP selectin was associated with clinicopathologic characteristics. The factors of stages (P = 0.002), HLA-B27 (P = 0.002), ESR (P = 0.001) and C-reactive protein (P = 0.000) were considered to be related to the expression of SP selectin, which indicated that SP-selectin might be involved in the development of AS. Besides, the prognosis of AS patients after treatment was explored and analyzed via Cox regression analysis. The analysis suggested that ESR and SP selectin both served as independent prognostic biomarkers for AS (HR = 2.069, 95% CI = 1.049-4.080; HR = 4.562, 95% CI = 1.766-11.784). Taken together, our study revealed that not only the level of SP selectin was upregulated, but also SP selectin could predict the prognosis of AS patients.     

Isolation of Side Population Cells and Detection of ABCG2 from SW480

Objective:Side population cells(SP cells)are a new type of stem cells.They mainly express ABCG2/BCRP1 and have the ability to eliminate DNA dye Hoechst33342.Many studies showed that side population cells were able of self-renewal,differentiation and carcinogenesis in cancers.Our investigation aimed at isolation of side population cells and ABCG2 positive subpopulation from colon cancer cell line SW480 and identification of their characteristics of cancer stem cells.Methods:side population cells and non-side population cells of colon cancer cell line SW480 were isolated with DNA dye Hoechst33342 and their cell cycles were measured by flow cytometry.Expression of ABCG2 of SW480 was measured by immunohistochemistry and immunofluorescence,and its proportion was measured by flow cytometry.Results:SW480 contained 2.29% side population cells.The fraction of side population cells decreased greatly to 0.40% by treatment with verapamil.The fraction of side population cells in S-G2M cell cycle was 16.14%,which was much lower than the fraction(34.05%)of non-side population cells in S-G2M.In SW480,ABCG2 positive cells,which proportion was 9.66%,were small,circular or oval,lack of psuedopods,similar to poor differentiation.On the contrary,the ABCG2 negative cells were large,polygonal,with many psuedopods,similar to high differentiation.Conclusion:our assay identified that side population cells did exist in SW480 and had a quiescence characteristic of stem cells.ABCG2 positive subpopulation occupied about 9.66% of SW480 and may have the ability to promote cell self-renewal and inhibit cell differentiation.Therefore,to isolate ABCG2 positive subpopulation from side population cells may be an alternative to study colorectal cancer stem cells.     

枳术丸煎剂与枳术汤对大鼠P物质的影响

目的探讨枳术丸与枳术汤对正常大鼠血浆P物质(SP)及肠组织SP的影响。方法正常大鼠分5组,灌胃给药7 d后采集标本,放免检测血浆及肠组织SP含量。结果枳术丸与枳术汤均能升高大鼠血浆SP及肠组织SP含量,呈一定的量-效关系,但枳术丸与枳术汤二者无显著差异。结论升高血及胃肠组织SP含量是枳术丸与枳术汤促进胃肠运动作用的机制之一。     

电浮针对原发性痛经镇痛作用的随机对照研究

目的:观察电浮针疗法对原发性痛经(PD)的镇痛作用及临床疗效。方法:171例PD患者,随机分为电浮针组、浮针组和药物组各57例,电浮针组采用电针刺激(疏波频率约60 Hz、串长2.5 s,密波频率约60 Hz、串长5 s,强度2~3 V,持续30 min)与浮针疗法相结合,远取三阴交穴治疗,浮针组采用浮针疗法取三阴交穴治疗,药物组采用口服布洛芬缓释胶囊(0.3 mg/次,2次/日)治疗,3组均连续治疗3个月经周期,治疗后随访3个月经周期统计疗效。结果:纳入171例患者,163例完成试验,脱落8例。电浮针组、浮针组与药物组总有效率(ITT/PP)分别为94.74%/96.43%、91.23%/96.30%和77.19%/83.02%;电浮针组:近期治愈40/40,显效9/9,好转5/5,无效3/2;浮针组:近期治愈38/38,显效10/10,好转4/4,无效5/2;药物组:近期治愈10/10,显效27/27,好转7/7,无效13/9。ITT和PP分析结果一致:电浮针和浮针组的总疗效以及痊愈率显著优于药物组(P<0.01),电浮针与浮针组的总疗效以及痊愈率差异无显著性意义;短时间内电浮针组镇痛作用优于浮针组(P<0.05)。结论:三阴交穴电浮针疗法对PD的镇痛作用具有高效快捷、安全无痛的特点,临床疗效显著优于口服布洛芬缓释胶囊。     

SP825-大孔树脂富集山茱萸环烯醚萜苷的工艺研究

目的：优化大孔树脂富集环烯醚萜苷工艺，提高固型物中莫诺苷和马钱素（二苷）的含量。方法：考察上样量、洗脱剂浓度、洗脱体积，上样方法等因素对SP825大孔吸附树脂富集山茱萸环烯醚萜苷的影响。以洗脱液中莫诺苷和马钱素（二苷）含量作为考察指标，用HPLC法测定其含量，确定最佳工艺参数。结果：SP825大孔吸附树脂按树脂与药材克重比为1：2的比例动态上样二次，50％乙醇洗脱7BV为最佳富集环烯醚萜苷的工艺。经SP825大孔树脂富集后，固型物中两苷含量提高6倍多，含量达69．68％。结论：采用SP825大孔树脂分离富集环烯醚萜苷，可作为一可行的制备环烯醚萜苷制剂方法。     

耳穴综合疗法对无先兆偏头痛患者血浆5-HT、SP、β-EP的影响

目的:观察耳穴综合疗法治疗无先兆偏头痛对血浆5-HT、SP和-βEP的影响。方法:对60例无先兆偏头痛患者随机分为两组,治疗组采用耳穴综合疗法,对照组采用尼莫地平等药物口服,在进行临床疗效评价的基础上,对治疗前后5-HT、SP和-βEP进行检测。结果:治疗组总有效率93.33%,对照组总有效率76.67%,两组比较有显著性差异(P<0.05);治疗组5-HT、SP和-βEP含量与治疗前相比有显著性差异(P<0.05),对照组5-HT、SP含量与治疗前相比亦有显著性差异(P<0.05,P<0.01),-βEP前后比较无显著性差异(P>0.05)。结论:耳穴综合疗法治疗无先兆偏头痛主要是通过降低5-HT、SP和升高-βEP达到治疗目的的。