Variants of Interleukin-7/Interleukin-7 Receptor Alpha are Associated with Both Neuromyelitis Optica and Multiple Sclerosis Among Chinese Han Population in Southeastern China

Background:

Neuromyelitis optica (NMO) and multiple sclerosis (MS) are autoimmune demyelinating diseases of the central nerve system. Interleukin-7 (IL-7) and interleukin-7 receptor alpha (IL-7Rα) were proved to be important in the pathogenesis of both diseases because of the roles they played in the differentiations of autoimmune lymphocytes. The variants of both genes had been identified to be associated with MS susceptibility in Caucasian, Japanese and Korean populations. However, the association of these variants with NMO and MS has not been well studied in Chinese Southeastern Han population. Here, we aimed to evaluate the association of six IL-7 variants (rs1520333, rs1545298, rs4739140, rs6993386, rs7816065, and rs2887502) and one variant of IL-7RA (rs6897932) with NMO and MS among Chinese Han population in southeastern China.

Methods:

Matrix-assisted laser desorption/ionization time of flight mass spectrometry (MassARRAY system) and Sanger sequencing were used to determine the variants of IL-7 and IL-7RA in 167 NMO patients, 159 MS patients and 479 healthy controls among Chinese Han population in southeastern China. Samples were excluded if the genotyping success rate <90%.

Results:

Statistical differences were observed in the genotypes of IL-7 rs1520333 in MS patients and IL-7RA rs6897932 in NMO patients, compared with healthy controls (P = 0.035 and 0.034, respectively). There was a statistically significant difference in the genotypes of IL-7 rs2887502 between MS and NMO patients (P = 0.014). And there were statistically significant differences in the rs6897932 genotypes (P = 0.004) and alleles (P = 0.042) between NMO-IgG positive patients and healthy controls.

Conclusions:

The study suggested that among Chinese Han population in southeastern China, the variant of IL-7RA (rs6897932) was associated with NMO especially NMO-IgG positive patients while the variant of IL-7 (rs1520333) with MS patients. And the genotypic differences of IL-7 rs2887502 between MS and NMO indicated the different genetic backgrounds of these two diseases.     

A computer-aided diagnosis system using white-light endoscopy for the prediction of conventional adenoma with high grade dysplasia

ObjectivesWe developed a computer-aided diagnosis system called ECRCCAD using standard white-light endoscopy (WLE) for predicting conventional adenomas with high-grade dysplasia (HGD) to optimise the patients' management decisions during colonoscopy.MethodsPretraining model was used to fine-tune the model parameters by transfer learning. 2,397 images of HGD and 2,487 low-grade dysplasia (LGD) images were randomly assigned (8:1:1) to the training, optimising, and internal validation dataset. The prospective validation dataset is the frames accessed from colonoscope videoes. One independent rural hospital provided an external validation dataset. Histopathological diagnosis was used as the standard criterion. The capability of the ECRCCAD to distinguish HGD was assessed and compared with two expert endoscopists.ResultsThe accuracy, sensitivity and specificity for diagnosis of HGD in the internal validation set were 90.5%, 93.2%, 87.9%, respectively. While 88.2%, 85.4%, 89.8%, respectively, for the external validation set. For the prospective validation set, ECRCCAD achieved an AUC of 93.5% in diagnosing HGD. The performance of ECRCCAD in diagnosing HGD was better than that of the expert endoscopist in the external validation set (88.2% vs. 71.5%, P < 0.0001).ConclusionECRCCAD had good diagnostic capability for HGD and enabled a more convenient and accurate diagnosis using WLE.     

性激素及其受体在食管癌高发区食管鳞癌发生发展过程中的作用

[目的]探讨性激素及其受体仵高发区食管鳞癌发生、分化、转移中的作用。[方法]采用放射免疫法（RIA）检测食管癌高发区林州原发性食管鳞癌患者44例和林州当地以及食管癌低发区同龄健康体检者各60人的血清性激素水平：采用免疫组化法（ABC）测定72例青年食管鳞癌患者（≤40岁）的手术切除标本ER表达状况。[结果]男性低发区健康人组、高发区健康人组和患者的血清雌激素水平分别为70．500±11．300pg／ml、54．684±18．159pg／ml、42．330±16．016pg／ml，女性低发区健康人组、高发区健康人组和患者的血清雌激素水平分别为87．010±13．910pg／ml、52．044±21．790pg/ml、32．998±19．339pg/ml，低发区健康人组的血清雌激素水平高于高发区健康人组和患者（男性的P值均为〈0．001，女性的P值分别为0．0183和〈0．001）：男性低发区健康人组、高发区健康人组和患者的血清雄激素水平分别为4．100±1．500ng／ml、5．485±2．485ng／ml、5．555±2．648ng/ml，女性低发区健康人组、高发区健康人组和患者的血清雄激素水平分别为0．618±0．076ng／ml、1．795±0．959ng／ml、1．985±0．990ng／ml，低发区健康人组的血清雄激素水平低于高发区健康人组和患者（男性的P值分别为0．0457和〈0．001，女性的P值均为〈0．001）。高发区青年食管鳞癌患者中，高、中、低分化者的ER阳性率分别为65％、54％、37％（P=0．0684），淋巴结有无转移者ER阳性碍夏分别为44％、58％（辟0．3450），侵及黏膜下层-肌层和纤维膜者的ER阳性率分别为42％、53％（P=0．5368），TNM分期处于I、Ⅱ期和Ⅲ期ER阳性率分别为66％和35％（P=0．0176）。[结论]食管癌高发区人群血清雌激素水平过低和雄激素水平过高及其比例改变可能是决定食管癌变和易感性的重要因素之一，结合性激素受体状态检测可能更有助于加深?     

Pre-Diagnostic Levels of AnionicTrypsinogen,Cationic Trypsinogen,and Pancreatic Secretory Trypsin Inhibitor in Relation to Pancreatic Cancer Risk

Background/Aims: Experimental studies have suggested that trypsinogen may enhance tumor progression and that the ratio between anionic trypsinogen and cationic trypsinogen (HAT/HCT) and between the sum of trypsinogens and pancreatic secretory trypsin inhibitor (PSTI) ((HAT + HCT)/PSTI) are disturbed in patients with pancreatic cancer. The aim of this study was to investigate if pre-diagnostic levels of these parameters are associated with subsequent pancreatic cancer risk. Methods: A total of 33,346 subjects participated in a health screening programme in Malmö, Sweden. Pancreatic cancer cases (n = 84) were matched to three controls each. HAT, HCT and PSTI were analyzed in pre-diagnostic serum samples. Odds ratios for pancreatic cancer were calculated using logistic regression and were then stratified for other risk factors. Results: In the main analysis, a statistically significant association between the ratio between HAT/HCT and pancreatic cancer was observed for all, for the crude OR and for the ORs adjusted for sex, BMI or Helicobacter pylori. When stratified for sex, statistically significant associations were found for females in the crude OR and for the ORs adjusted for time to analysis, BMI, alcohol consumption or H. pylori. There was a positive association between the ratio of HAT/HCT to pancreatic cancer in the intermediate/high alcohol consumption group and subjects with a BMI <25. The sum of trypsinogens showed a similar pattern, but was only of borderline significance in the intermediate/high alcohol consumption group. Conclusion:Our hypothesis predicted an increased risk for pancreatic cancer related to an imbalance between trypsin activity and trypsin inhibition capacity. Thefindings concerning the ratio of HAT/ HCT are in line with this. The results related to analyses stratified for other risk factors should be considered as mainly explorative.     

Sysmex XS 800i 血细胞分析仪血小板计数性能评价

目的 评价Sysmex XS-800i 血细胞分析仪血小板(PLT)计数性能。 方法 遵照行业指南验证Sysmex XS-800i血细胞分析仪PLT计数的精密度、线性、携带污染率和正确度; 以显微镜计数法为参考方法对仪器低值PLT检测一致性、小红细胞(RBC)和大PLT的干扰性和仪器报警有效性进行评价。 结果 精密度、线性、携带污染率、正确度均符合行业标准。对于11×10⁹～55×10⁹ L^-1范围内的低值PLT,Sysmex XS-800i检测相关性(r=0.923 9)优于ADVIA 2120i(r=0.908 0); 平均红细胞体积(MCV)<70 fL或MCV<75 fL且PLT直方图异常时、平均血小板体积(MPV)>x^-+2s即MPV>12 fL时,仪器检测PLT结果均有显著性差别(P<0.05)。特异性较高的报警为“RBC大小不一”和“小RBC”,分别为89.47%和83.87%; 阳性预测值较高的报警为“RBC大小不一”(92.00%)。 结论 Sysmex XS-800i血细胞分析仪的PLT计数性能符合行业标准要求; 对低值PLT计数准确性良好,但抗小RBC、大PLT干扰能力较差。日常使用应结合仪器各相关报警的有效性,建立合适的人工镜检复检规则。     

实时荧光定量PCR 检测胃癌SOX2的 表达及其临床意义

目的： 探讨性别决定相关基因簇2(SOX2)表达与胃癌发生、发展和转移的关系及其临床意义。方法：用Trizol提取52例胃癌组织及对应正常胃黏膜组织的mRNA,并将其逆转录为cDNA。用实时荧光定量PCR方法检测SOX2 mRNA的表达,并分析SOX2基因的表达水平与患者临床病理指标的关系。结果：胃正常黏膜组织中SOX2 mRNA的表达是胃癌组织的2.24倍,两者差异有统计学意义(t=3.22,P=0.002 6)。高分化和中分化的胃癌组织中SOX2 mRNA表达量高于低分化的胃癌组织(t=3.09和2.87,P均<0.05),肿瘤浸润深度为T1+T2的胃癌组织中SOX2 mRNA表达量是T3+T4癌组织的2.57倍(t=2.16,P<0.05),淋巴结无转移组SOX2 mRNA表达量是转移组的2.69倍(t=2.54,P<0.05)。与Ⅰ+Ⅱ期的胃癌组织比较,Ⅲ+Ⅳ期胃癌组织的SOX2 mRNA表达量明显降低(t =2.59,P=0.014)。SOX2 mRNA表达量与患者的性别、年龄无明显关系(P>0.05)。结论：SOX2 mRNA表达水平的降低与胃癌的发生、浸润和转移相关,有望成为胃癌诊断及预后判断的一个指标。     

骨肉瘤CD133 CD117 Ki-67的表达及与临床病理因素和危险度的相关性研究

  目的  研究骨肉瘤组织CD133、CD117及Ki-67在蛋白水平的表达情况及其与临床病理因素和危险度的关系。  方法  应用免疫组织化学PV-9000二步法检测55例骨肉瘤组织标本中CD133、CD117和Ki-67的表达,并与临床病理学指标和术后无瘤生存期进行比较分析,对照组为20例骨软骨瘤。应用SPSS 17.0软件统计分析,检验标准为P＜0.05具有统计学意义。  结果  骨肉瘤组织CD133、CD117、Ki-67蛋白表达阳性率显著高于良性的骨软骨瘤组织,差异有统计学意义（分别为P=0.016、P=0.008、P＜0.001）;CD133或Ki-67蛋白阳性表达骨肉瘤患者平均生存时间及平均转移时间短于CD133或Ki-67蛋白阴性骨肉瘤患者,差异有统计学意义（P＜0.05）;CD133、Ki-67在外科分期和远处转移对骨肉瘤患者预后有影响,其中CD133是外科分期及远处转移而影响骨肉瘤患者预后的独立因素。  结论  CD133和Ki-67表达可能在骨肉瘤发生、发展过程中起重要作用,有望成为判断其预后的指标。      

颈后路单开门椎管扩大成形术临床疗效影响因素的研究

目的 探讨影响颈后路单开门椎管扩大成形术(ELAP)临床疗效的相关因素. 方法 选取30例采用ELAP治疗并获得24月以上随访的患者,评测患者术前JOA评分、术后末次随访JOA评分,测量患者颈椎管正中矢状径增加距离(SCD)、开门距离(LOS)、开门角度(LOA)、术前颈椎前凸角度(LA),并结合年龄、性别、手术时间、术中出血等参数,研究以上参数之间及其与术后JOA评分改善率的相互影响关系. 结果 患者术前JOA评分平均分为(10.13±2.16),术后JOA评分平均分为(13.97±1.78),JOA评分改善率为(56.22±22.47)％.年龄≥70岁则JOA评分改善率明显下降,与其他年龄组比较,差别有统计学意义(P＜0.05);不同性别组之间JOA评分改善率无明显差别(P＞0.05);术前、术后JOA评分具有显著正相关(P＜0.01);年龄与术前评分间无显著相关,与术后JOA评分具有显著负相关(P＜0.05);SCD,LOS及IOA 3者之间呈显著相关(P＜0.01);LA与SCD,LOS,LOA无相关;术后JOA评分改善率与LOS呈显著相关(P＜0.01),与SCD呈显著相关(P＜0.05). 结论 SCD,LOS及LOA 3者之间呈显著相关;术后JOA评分改善率与LOS,SCD呈显著相关;LOS及SCD对ELAP临床疗效有显著影响.