Reduced anoctamin 7(ANO7) expression is a strong and independent predictor of poor prognosis in prostate cancer

Objective:Anoctamin 7(ANO7)is a calcium2+-dependent chloride ion channel protein.Its expression is restricted to prostate epithelial cells.The exact function is unknown.This study aimed to analyze ANO7 expression and its clinical significance in prostate cancer(PCa).Methods:ANO7 expression was assessed by immunohistochemistry in 17,747 clinical PCa specimens.Results:ANO7 was strongly expressed in normal prostate glandular cells but often less abundant in cancer cells.ANO7 staining was interpretable in 13,594 cancer tissues and considered strong in 34.4%,moderate in 48.7%,weak in 9.3%,and negative in 7.6%.Reduced staining was tightly linked to adverse tumor features[high classical and quantitative Gleason grade,lymph node metastasis,advanced tumor stage,high Ki67 labeling index,positive surgical margin,and early biochemical recurrence(P<0.0001 each)].The univariate Cox hazard ratio for prostate-specific antigen(PSA)recurrence after prostatectomy in patients with negative vs.strong ANO7 expression was 2.98(95%confidence interval 2.61–3.38).The prognostic impact was independent of established pre-or postoperatively available parameters(P<0.0001).Analysis of annotated molecular data showed that low ANO7 expression was linked to TMPRSS2:ERG fusions(P<0.0001),elevated androgen receptor expression(P<0.0001),as well as presence of 9 of 11 chromosomal deletions(P<0.05 each).A particularly strong association of low ANO7 expression with phosphatase and tensin homolog(PTEN)deletion may indicate a functional relationship with the PTEN/AKT pathway.Conclusions:These data identify reduced ANO7 protein expression as a strong and independent predictor of poor prognosis in PCa.ANO7 measurement,either alone or in combination,might provide clinically useful prognostic information in PCa.     

Inverse correlation between gastroesophageal reflux disease and atrophic gastritis assessed by endoscopy and serology

BACKGROUND Helicobacter pylori(H.pylori)infection is known to prevent the occurrence of gastroesophageal reflux disease(GERD)by inducing gastric mucosal atrophy.However,little is known about the relationship between atrophic gastritis(AG)and GERD.AIM To confirm the inverse correlation between AG and the occurrence and severity of GERD.METHODS Individuals receiving health checkups who underwent upper gastrointestinal endoscopy at Seoul National University Healthcare System Gangnam Center were included.The grade of reflux esophagitis was evaluated according to the Los Angeles classification.Endoscopic AG(EAG)was categorized into six grades.Serologic AG(SAG)was defined as pepsinogen I≤70 ng/m L and pepsinogen I/II ratio≤3.0.The association between the extent of EAG and SAG and the occurrence and severity of GERD was evaluated using multivariate logistic regression analysis.RESULTS In total,4684 individuals with GERD were compared with 21901 healthy controls.In multivariate logistic regression analysis,advanced age,male sex,body mass index>23 kg/m2,presence of metabolic syndrome,current smoking,and alcohol consumption were associated with an increased risk of GERD.Seropositivity for H.pylori immunoglobulin G antibodies was associated with a decreased risk of GERD.There was an inverse correlation between the extent of EAG and occurrence of GERD:Odds ratio(OR),1.01[95%confidence interval(CI):0.90-1.14]in C1,0.87(0.78-0.97)in C2,0.71(0.62-0.80)in C3,0.52(0.44-0.61)in O1,0.37(0.29-0.48)in O2,and 0.28(0.18-0.43)in O3.Additionally,the extent of EAG showed an inverse correlation with the severity of GERD.The presence of SAG was correlated with a reduced risk of GERD(OR=0.49,95%CI:0.28-0.87,P=0.014).CONCLUSION The extent of EAG and SAG exhibited strong inverse relationships with the occurrence and severity of GERD.AG followed by H.pylori infection may be independently protect against GERD.     

子宫颈鳞状细胞癌中PD-L2的表达及临床意义

目的 探讨子宫颈鳞状细胞癌(cervical squamous cell carcinoma, CSCC)组织中程序性死亡配体-2(programmed death-ligand 2, PD-L2)的表达及临床意义。方法 采用免疫组化EnVision法检测CSCC及子宫颈腺癌(cervical adenocarcinoma, CAC)组织中PD-L2的表达；分析PD-L2表达与CSCC临床病理特征、无瘤生存期(disease free survival, DFS)和总生存期(overall survival, OS)的关系。结果 肿瘤细胞PD-L2的总阳性率为16.8%(24/143),肿瘤浸润性免疫细胞(tumor-infiltrating immune cell, TIIC)PD-L2的总阳性率为66.4%(95/143)。肿瘤细胞PD-L2在CSCC中的阳性率为16.3%(21/129),TIIC PD-L2在CSCC中的阳性率为65.1%(84/129);肿瘤细胞PD-L2在CAC中的阳性率为21.4%(3/14),TIIC PD-L2在CAC中的阳性率为78.6%(11/14...     

EFNB2对膀胱癌细胞增殖、侵袭及迁移的影响及其机制

目的 研究EFNB2对膀胱癌细胞增殖、凋亡、侵袭和迁移等生物学功能的影响，探讨其作为免疫治疗的可能性。方法 以膀胱癌细胞系T24、5637、J82和UM-UC-3细胞为研究对象，选用人膀胱上皮永生化细胞系SV-HUC-1细胞作为阴性对照。通过慢病毒载体转染shRNA-EFNB2进行敲低实验，然后分别采用qRT-PCR和Western blot检测细胞中EFNB2的mRNA和蛋白表达水平；CCK8和克隆形成实验检测细胞增殖活力；流式细胞术检测细胞周期和细胞凋亡率；Transwell和细胞划痕实验检测细胞侵袭和迁移能力；Western blot检测Bcl2、Bax、Vimentin和E-cadherin的蛋白表达水平。结果 与人膀胱上皮永生化细胞系SV-HUC-1细胞相比，膀胱癌细胞系中EFNB2的表达水平显著增高,其中以T24细胞表达最高(P<0.01)。敲低T24细胞系EFNB2基因表达后，T24细胞增殖活力显著下降(P<0.05)；细胞周期虽然尚未有显著变化，但细胞凋亡率显著增高(P<0.05)，并且抗凋亡蛋白Bcl2表达显著下降（P<0.05）,促凋亡蛋白B...     

远程医疗机器人在心脏死亡器官捐献肝移植术后随访中的应用

目的探讨远程医疗机器人在心脏死亡器官捐献(DCD)肝移植受体术后随访中的应用效果。方法研究对象为西安交通大学第一附属医院2014年1月至2017年12月的100例DCD肝移植受体。根据随访方式不同,将受体分为研究组(50例,采用远程医疗机器人随访)和对照组(50例,采用传统电话随访)。分析并比较研究组和对照组DCD肝移植受体的术后3个月的依从性(服药依从性、自我监测、生活依从性和随访依从性)、随访时间以及随访满意度。结果研究组的服药依从性、自我监测、生活依从性、随访依从性及依从性总分的得分均明显高于对照组(均为P0.05)。研究组肝移植受体的每次随访时间为(9±4)min,明显短于对照组的(13±4)min(t=-4.452, P0.001)。研究组肝移植受体的术后随访满意度为(19.8±2.6)分,明显高于对照组的(16.2±3.1)分(t=6.234, P0.001)。结论远程医疗机器人在DCD肝移植受体术后随访中的应用效果较满意,值得临床推广,其有望成为DCD肝移植受体术后随访中不可缺少的一部分。