Minimal change disease with IgM+ immunofluorescence: a subtype of nephrotic syndrome

Immunoglobulin (Ig) M nephropathy is defined by electron-dense mesangial deposits and mesangial IgM visible by immunofluorescence (IF) without other histopathologic and immunofluorescent microscopic abnormalities. Certain patients have only immuno-positive (IgM+) IF. Children presenting with steroid-dependent or steroid-resistant nephrotic syndrome have a high prevalence of IgM+ IF with or without electron-dense deposits. We reviewed the clinical course of children with steroid-dependent or steroid-resistant nephrotic syndrome who underwent renal biopsy at Texas Children‘s Hospital from 1989 to 2006 to further characterize IgM+ IF in children with nephrotic syndrome. Of the 55 children with steroid-resistant or -dependent minimal change disease (MCD), 23 had IgM+ IF. Of these 23 children, 61% had microscopic hematuria at presentation, 48% (11/23) were steroid-dependent, and 48% (11/23) steroid-resistant (one underwent biopsy prior to steroid therapy). We compared the efficacy of adjuvant treatment with cyclophosphamide and cyclosporine: 18% initially treated with cyclophosphamide obtained remission, while 55% had no response; 83% obtained subsequent remission with cyclosporine. Of those initially treated with cyclosporine, 88% obtained complete or partial remission. IgM+ IF may be surrogate marker for the severity of MCD. Based on our results, children with MCD and IgM+ IF have a better response to cyclosporine than cyclophosphamide.     

睾丸性无精子症中医证型间睾丸病理类型、IgG、IgM的比较研究

目的 通过对睾丸性无精子症肾虚证组、血瘀证组患者睾丸病理类型、IgG、IgM、的比较研究，为辨证论治睾丸性无精子症提供理论依据。方法 31例睾丸性无精子症患者的睾丸组织，其中。肾虚证者16例，血瘀证者15例。正常对照组睾丸5例。进行病理检查，睾丸病变程度行Makler评分，利用免疫组织化学ABC法检测睾丸组织中IgG、IgM沉积情况，并对上述结果行统计学处理。结果两组患者的病理类型都以生精阻滞为主，但血瘀证组患者的睾丸病变更为严重而复杂。31例患者中22例有IgG沉积，11例有IgM沉积，两组间比较无显著性差异，免疫复合物的沉积与睾丸病变程度无关。结论血瘀证患者睾丸组织病变更为严重。自身免疫在肾虚证、血瘀证患者中普遍存在，但免疫因素在睾丸性无精症的发病机制中不占主导地位，自身免疫与证型无关。     

Broncho-alveolar Lavage Matrix Metalloproteases as a Sensitive Measure of Bronchiolitis Obliterans

Bronchiolitis obliterans (BO) is a survival-limiting factor in lung transplantation. There are no common BO markers in use. Since BO is associated with extracellular matrix remodeling, we asked whether matrix metalloproteases (MMPs) and their tissue inhibitors (TIMPs) could serve as BO markers. In 72 lung transplant patients (34 BO syndrome (BOS) 0, 15 BOS 0-p, and 23 BOS 1) serum and broncho-alveolar lavage (BAL) MMP and TIMP levels were examined by ELISA. The BAL cell counts were additionally analyzed. The serum MMP-2, MMP-8, MMP-9 and TIMP-2 levels were not different in all groups. In contrast, the BAL MMP-8, -9 and TIMP-1 levels were significantly elevated in BOS 0-p (p = 0.003; p = 0.007; p = 0.0003, respectively) and BOS 1 (p = 0.003; p = 0.001; p = 0.0004, respectively) as compared to BOS 0 patients. The BAL MMP-8, -9 and TIMP-1 levels were significant predictors of BOS 0-p (p = 0.01; p = 0.01; p = 0.01, respectively) and BOS-1 (p = 0.007; p = 0.01; p = 0.006, respectively) in receiver operating characteristic analysis. Except for BAL macrophages that were significantly decreased in BOS 0-p versus BOS 0 patients; other cell counts were not different between the groups. BAL MMP-8, -9 and TIMP-1 might be useful markers to detect BO in lung transplant patients.     

牙本质折断恒牙牙髓预后影响因素logistic回归分析

目的：回顾性分析牙本质折断的恒牙牙髓预后及其影响因素。方法：对2012年2月至2014年3月就诊于我院口腔科的牙本质折断患者进行logistic回归分析,记录患者的治疗方法、年龄、性别、就诊时间、牙根发育情况、冠折近髓程度、松动度及就诊叩痛,分析治疗效果及牙髓预后情况,并分析影响牙髓预后的因素。结果：共收集到305例符合纳入条件的牙本质折断患者,共有患牙325颗。其中有248颗（占76.3%）牙髓存活或钙化,为治疗成功;77颗（占23.7%）发生了牙髓坏死,为治疗失败;牙本质折断行间接盖髓术的成功率为76.3%。冠折近髓程度、就诊叩痛与牙髓坏死率有显著相关性（P＜0.05）。患者年龄、性别等因素与牙髓坏死率无显著相关性（P＞0.05）。结论：牙本质折断后行间接盖髓术的成功率较高;冠折近髓程度、就诊时叩痛是判断牙髓预后的重要因素。     

兔出血症病毒抗体的实验室检测能力验证结果评价

【摘要】 目的 通过兔出血症病毒抗体检测能力验证计划,了解实验动物检测机构检验能力,提高实验动物质量检测水平。方法 按照CNAS批准的能力验证方案,通过筛选血清制备样品,经过稳定性和均匀性检验合格,作为能力验证样品。采用随机编号,发样给参加单位,并附作业指导书。在规定时限提交检验报告和原始记录复印件,其结果与样品预检结果一致的判为满意结果,不一致或未能提交结果的判为不满意结果。结果 来自14个省市自治区的20个实验室报名参加本次比对实验,均在规定时间内反馈了检测结果,17个实验室检测结果为合格或优秀,占参加比对实验室的85%。在20个实验室中,14个实验室采用了酶联免疫吸附实验（ELISA）方法,6个实验室采用血凝抑制实验（HAI）方法。结论 全国各实验动物检测机构兔出血症病毒抗体总体检测能力较高,实施能力验证计划能够反映实验室的检测水平。     

基因表达谱分析肝细胞癌的特征基因

目的:生物信息学方法建立全面的肝细胞癌（HCC）差异表达基因谱以及初步筛选基于该恶性肿瘤样本的特征 基因。方法:利用R语言中的edgeR包分析不同组之间差异表达的基因（DEGs）。利用STRING数据库分析预测蛋白质的 功能联系和蛋白质相互作用。R语言的clusterProfiler包做GO（gene ontology）（包括biological process、 molecular function和cellular component）及KEGG（kyoto encyclopedia of genes and genomes）通路富集分析。 筛选差异基因显著富集的GO和KEGG分子途径。利用SLC7A11（solute carrier family 7 member 11）和CCDC14 （coiled-coil domain-containing 14）基因作为肝细胞癌的标志物,利用ELISA法进行检测（确诊的HCC阳性患者为 HCC组,共195例;HCC阴性正常人群为对照组,共107名）,计算阳性率。结果:与癌旁对照样本相比,一共鉴定出454 个差异表达基因,其中高表达基因234个,低表达基因220个。PPI方法进一步筛选出排名前10的重要潜在基因,其中 SLC7A11和CCDC14两个基因排名靠前。利用富集分析,差异基因主要集中在neuroactive ligand-receptor interaction通路中。与对照组相比,HCC组SLC7A11和CCDC14存在显著的高表达[SLC7A11:（70.12±14.3） ng/mL比 （23.12±7.11）ng/mL,t=6.17,P<0.001;CCDC14:（6.17±2.31）pg/mL比（2.13±0.84）pg/mL,t=5.35, P<0.001]。SLC7A11针对HCC检测阳性率达到80.2%,而CCDC14达到68.8%。结论:SLC7A11和CCDC14可以作为HCC的两个 潜在的有效临床生物标志物。     

猿猴疱疹病毒B糖蛋白D的表达及抗原性的探讨

目的表达猴B病毒糖蛋白D(BVgD)并对其抗原性进行初步研究。方法应用体外原核表达BVgD,继而进行Ni离子亲和层析纯化。采用Western blotting对蛋白抗原性进行分析,评估其抗原潜力。结果完成了对BVgD的小量表达和纯化。Western blotting结果表明表达出的重组蛋白BVgD具有特异性结合猴B病毒抗体的能力。结论BVgD重组蛋白具有良好的抗原性,与HSV-1抗体无交叉反应。具有进一步开发的潜力,也为BVgD免疫原性等方面的进一步研究提供了条件。     

Effects of emodin on the proliferation of the glomerular mesangial cell and correlative cytokines in rats

Objective：To investigate the effects of emodin（EMD） on cell proliferation and correlative cytokines secretion of glomerular mesangial in rats. Methods：The effects of EMD on cell proliferation and IL-6, TGF-β1 secretion of glomerular mesangial in rats were observed. Cell proliferation was measured by MTT method. IL-6 and TGF-β1 secretion was detected with ELISA. Results：EMD was able to inhibit the cell proliferation and down-regulate the IL-6 and TGF-β 1 secretion of glomerular mesangial, as compared to the model group in rats （P 〈 0.05）. Conclusion：EMD could significantly inhibit the cell proliferation, and reduce the creation of extracellular matrix（ECM）, this indicated that it could play an important role in alleviation and prevention of glomerular sclerosis. The mechanism may be that EMD can reduce the IL-6 and TGF-β1 secretion ofglomerular mesangial cell in rats.     

日本血吸虫成虫67kDa分子抗原的纯化及其对血吸虫病的诊断和疗效考核

目的 为检测日本血吸虫成虫67kDa分子抗原(SjAWA67)对血吸虫病的诊断及疗效考核价值。方法 通过SDS-PAGE和电渗方法,从日本血吸虫成虫抗原中分离纯化出67kDa分子抗原,并用该抗原包被酶标反应板微孔,进行ELISA检测。结果 SjAWA67的纯度已达到电泳纯和免疫纯,对急、慢性血吸虫病患血清的捡出率分别为100％和95％,与正常人血清、肝吸虫病和肺吸虫病患血清均未出现明显的交叉反应,44例血吸虫病患治疗后3、6和12个月后的阴转率分别达45．5％、75．0％和90,9％。结论 SjAWA67分子抗原具有较好的疗效考核价值和现场应用前景。