Identification of hub genes associated with Helicobacter pylori infection and type 2 diabetes mellitus:A pilot bioinformatics study

BACKGROUND Helicobacter pylori(H.pylori)infection is related to various extragastric diseases including type 2 diabetes mellitus(T2DM).However,the possible mechanisms connecting H.pylori infection and T2DM remain unknown.AIM To explore potential molecular connections between H.pylori infection and T2DM.METHODS We extracted gene expression arrays from three online datasets(GSE60427,GSE27411 and GSE115601).Differentially expressed genes(DEGs)commonly present in patients with H.pylori infection and T2DM were identified.Hub genes were validated using human gastric biopsy samples.Correlations between hub genes and immune cell infiltration,miRNAs,and transcription factors(TFs)were further analyzed.RESULTS A total of 67 DEGs were commonly presented in patients with H.pylori infection and T2DM.Five significantly upregulated hub genes,including TLR4,ITGAM,C5AR1,FCER1G,and FCGR2A,were finally identified,all of which are closely related to immune cell infiltration.The gene-miRNA analysis detected 13 miRNAs with at least two gene cross-links.TF-gene interaction networks showed that TLR4 was coregulated by 26 TFs,the largest number of TFs among the 5 hub genes.CONCLUSION We identified five hub genes that may have molecular connections between H.pylori infection and T2DM.This study provides new insights into the pathogenesis of H.pylori-induced onset of T2DM.

miR-17-5p通过调控PKD2对肺腺癌HCC827细胞生物学行为的影响

目的:探讨miR-17-5p在肺腺癌细胞中的表达及miR-17-5p对肺腺癌细胞增殖、侵袭、迁移、凋亡的影响及其分子作用机制。方法:采用实时荧光定量PCR检测人肺腺癌细胞系HCC827和人正常肺上皮细胞BEAS-2B中miR-17-5p的表达水平。实验分为miR-17-5p过表达组(miR-17-5p mimics组)、miR-17-5p低表达组(miR-17-5p inhibitor组)和阴性对照组(NC组)。通过CCK-8、流式细胞术、Transwell实验探讨miR-17-5p对肺腺癌细胞增殖、凋亡、侵袭及迁移的影响。最后通过Targetscan数据库预测出PKD2是miR-17-5p下游潜在的靶基因,利用实时荧光定量PCR和Western-blot实验验证miR-17-5p与PKD2之间的相互作用关系。结果:miR-17-5p在HCC827细胞中高表达(P<0.001),上调miR-17-5p后显著促进了肺腺癌细胞增殖(P<0.05)、侵袭(P<0.01)及迁移(P<0.05)并抑制凋亡(P<0.01)。miR-17-5p与PKD2的3’UTR存在直接结合位点,并且过表达miR-17-5p在mRNA和蛋白水平均显著促进了PKD2的表达(P<0.01)。结论:PKD2是miR-17-5p的直接靶基因,miR-17-5p通过调控PKD2影响肺腺癌细胞的生物学行为。

Pathogenesis of chronic enteropathy associated with the SLCO2A1 gene:Hypotheses and conundrums

Chronic enteropathy associated with the SLCO2A1 gene(CEAS)is a complex gastroenterological condition characterized by multiple ulcers in the small intestine with chronic bleeding and protein loss.This review explores the potential mechanisms underlying the pathogenesis of CEAS,focusing on the role of SLCO2A1-encoded prostaglandin transporter OATP2A1 and its impact on prostaglandin E2(PGE2)levels.Studies have suggested that elevated PGE2 levels contribute to mucosal damage,inflammation,and disruption of the intestinal barrier.The effects of PGE2 on macrophage activation and Maxi-Cl channel functionality,as well as its interaction with nonsteroidal anti-inflammatory drugs play crucial roles in the progression of CEAS.Understanding the balance between its protective and pro-inflammatory effects and the complex interactions within the gastrointestinal tract can shed light on potential therapeutic targets for CEAS and guide the development of novel,targeted therapies.

LncRNA PKD2-2-3对肺腺癌细胞增殖、克隆形成、迁移及侵袭能力的影响

背景与目的:长链非编码RNA(long non-coding RNA,lnc RNA)在肺腺癌患者中异常表达,与肿瘤的发生、发展和化疗耐药密切相关。本研究旨在探讨lncRNA蛋白激酶D2(lncRNA PKD2-2-3)在肺腺癌发生、发展过程中发挥的生物学功能,验证lncRNA PKD2-2-3对肺腺癌细胞增殖、克隆形成、迁移和侵袭的影响。方法:基于Affymetrix人类基因芯片转录组阵列2(Affymetrix?GeneChip Human Transcriptome Array 2.0,HTA2.0)分析3对肺腺癌组织及癌旁组织,寻找在肺腺癌组织中高表达的lncRNA,其中lncRNA PKD2-2-3的表达差异最大。利用基因表达综合数据库(Gene Expression Omnibus,GEO)中GSE19188和GSE30219的数据分析lncRNA PKD2-2-3在肺腺癌组织中的表达和对患者预后的影响。通过实时荧光定量聚合酶链反应(real-time fluorescence quantitative polymerase chain reaction,RTFQ-PCR)检测lncRNA PKD2-2-3在细胞系(HBE、A549、PC9)中的表达情况。在A549和PC9两种细胞系中使用siRNA干扰技术敲低lncRNA PKD2-2-3的表达,通过细胞计数试剂盒-8(cell counting kit-8,CCK-8)实验和克隆形成实验检测lncRNA PKD2-2-3表达对肺腺癌细胞增殖和克隆形成能力的影响;划痕实验和transwell实验分别检测lncRNA PKD2-2-3表达对肺腺癌细胞迁移和侵袭的影响。蛋白质印迹法(Western blot)检测敲低lncRNA PKD2-2-3表达后对上皮-间质转化(epithelial-mesenchymal transition,EMT)相关蛋白E-钙黏蛋白(E-cadherin)和N-钙黏蛋白(N-cadherin)表达水平的影响。皮下移植瘤模型探究lncRNA PKD2-2-3在体内对肺腺癌细胞增殖的影响。结果:LncRNA PKD2-2-3在肺腺癌组织中呈高表达,且高表达的患者预后较差。对比正常气管上皮永生化细胞HBE,lncRNA PKD2-2-3在肺腺癌细胞系A549和PC9中高表达,敲低lncRNA PKD2-2-3的表达抑制肺腺癌细胞的增殖、克隆形成、迁移和侵袭能力。Western blot结果显示,敲低lnc RNA PKD2-2-3后,E-cadherin表达水平升高,N-cadherin表达水平降低。皮下移植瘤实验表明,在体内lncRNA PKD2-2-3敲低后抑制肺腺癌的生长。结论:lncRNA PKD2-2-3在肺腺癌组织中上调表达,且与患者的不良预后相关,lncRNA PKD2-2-3的高表达促进肺腺癌细胞的增殖、克隆形成、迁移和侵袭能力,体内外实验表明lncRNA PKD2-2-3的表达与肺腺癌的EMT过程密切相关。

Detections of mefA, ermB, and mphA Macrolides Resistant Genes in Bacteria Isolated from Covid-19 Patients from Selected Health Facilities in Ibadan, Nigeria

Background: COVID-19 is a disease caused by Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2). Epidemiological data indicated that bacterial complications in COVID-19 would decrease clearance rate of the infecting agent and increase mortality rate. Macrolides such as Azithromycin are usually administered to COVID-19 patients as palliative treatments. Currently, a considerable number of bacterial strains have developed resistance to various antibiotics, especially macrolides. Resistance is reported to be due to possession of mefA, ermB, and mphA genes by Gram positive and Gram negative bacteria. Therefore, this study determined antibiotic resistance patterns and identify mefA, ermB and mphA macrolide-resistant genes in bacterial pathogens isolated from COVID-19 cases in Ibadan, Nigeria. Methods: 400 Nasopharyngeal samples were collected from symptomatic cases before antibiotic medication;structured questionnaires were administered to collect socio-demographic data of participants. Samples were cultured on Blood, Chocolate, MacConkey and Mannitol salt agar at 37°C for 48 hrs. Bacterial identification was performed using VITEK 2.0 ID cards and API 20E for Gram positive and negative bacteria respectively. Antibiotic Susceptibility Testing was performed using Kirby Bauer disc diffusion methods and VITEK 2.0 AST card kits. DNA of multidrug resistant bacterial isolates was extracted;resistant genes were determined using a polymerase chain reaction with specific primers. Amplified genes were detected using agarose gel electrophoresis. Results: 240 (60%) had bacterial growth and 97 (22.2%) yielded no growth. From the 240 bacterial isolates, 38 (15.83%) were multi-drug resistant including resistance to macrolides (Azithromycin) 20 (52.63%) of which were positive for either mefA or ermB, and none (0.0%) possess mphA gene;14 (36.8%) isolates had mefA gene, 10 (26.3%) isolates carried ermB gene. Conclusion: Multi-drug bacterial resistance including macrolides and quinolones was detected. Only mefA and ermB genes were detected in the bacterial isolates, especially in Gram positive organisms. The detection of mefA and ermB genes in the MDR bacterial isolates raised concern on the use of azithromycin as palliative treatment for COVID-19 symptomatic patients.

Trifunctional Cu-Mesh/Cu_(2)O@FeO Nanoarrays for Highly Efficient Degradation of Antibiotic, Inactivation of Antibiotic-Resistant Bacteria, and Damage of Antibiotics Resistance Genes

Trifunctional Cu-mesh/Cu_(2)O@FeO nanoarrays heterostructure is designed and fabricated by integrating CuCu_(2)O@FeO nanoarrays onto Cu-mesh(CM)via an in situ growth and phase transformation process.It is successfully applied to efficiently mitigate the antibiotic pollution,including degradation of antibiotics,inactivation of antibiotic-resistant bacteria(ARB),and damage of antibiotics resistance genes(ARGs).Under visible-light irradiation,CM/CuCu_(2)O@FeO nanoarrays exhibit a superior degradation efficiency on antibiotics(e.g.,up to 99%in 25 min for tetracycline hydrochloride,TC),due to the generated reactive oxygen species(ROS),especially the dominant·O^(2−).It can fully inactivate E.coli(HB101)with initial number of~108 CFU mL^(−1) in 10 min,which is mainly attributed to the synergistic effects of 1D nanostructure,dissolved metal ions,and generated ROS.Meanwhile,it is able to damage ARGs after 180 min of photodegradation,including tetA(vs TC)of 3.3 log 10,aphA(vs kanamycin sulfate,KAN)of 3.4 log 10,and tnpA(vs ampicillin,AMP)of 4.4 log 10,respectively.This work explores a green way for treating antibiotic pollution under visible light.

Identification of key genes and biological pathways in lung adenocarcinoma by integrated bioinformatics analysis

BACKGROUND The objectives of this study were to identify hub genes and biological pathways involved in lung adenocarcinoma(LUAD)via bioinformatics analysis,and investigate potential therapeutic targets.AIM To determine reliable prognostic biomarkers for early diagnosis and treatment of LUAD.METHODS To identify potential therapeutic targets for LUAD,two microarray datasets derived from the Gene Expression Omnibus(GEO)database were analyzed,GSE3116959 and GSE118370.Differentially expressed genes(DEGs)in LUAD and normal tissues were identified using the GEO2R tool.The Hiplot database was then used to generate a volcanic map of the DEGs.Weighted gene co-expression network analysis was conducted to cluster the genes in GSE116959 and GSE-118370 into different modules,and identify immune genes shared between them.A protein-protein interaction network was established using the Search Tool for the Retrieval of Interacting Genes database,then the CytoNCA and CytoHubba components of Cytoscape software were used to visualize the genes.Hub genes with high scores and co-expression were identified,and the Database for Annotation,Visualization and Integrated Discovery was used to perform enrichment analysis of these genes.The diagnostic and prognostic values of the hub genes were calculated using receiver operating characteristic curves and Kaplan-Meier survival analysis,and gene-set enrichment analysis was conducted.The University of Alabama at Birmingham Cancer data analysis portal was used to analyze relationships between the hub genes and normal specimens,as well as their expression during tumor progression.Lastly,validation of protein expression was conducted on the identified hub genes via the Human Protein Atlas database.RESULTS Three hub genes with high connectivity were identified;cellular retinoic acid binding protein 2(CRABP2),matrix metallopeptidase 12(MMP12),and DNA topoisomerase II alpha(TOP2A).High expression of these genes was associated with a poor LUAD prognosis,and the genes exhibited high diagnostic value.CONCLUSION Expression levels of CRABP2,MMP12,and TOP2A in LUAD were higher than those in normal lung tissue.This observation has diagnostic value,and is linked to poor LUAD prognosis.These genes may be biomarkers and therapeutic targets in LUAD,but further research is warranted to investigate their usefulness in these respects.

Role of p53 suppression in the pathogenesis of hepatocellular carcinoma

In the world,hepatocellular carcinoma(HCC)is among the top 10 most prevalent malignancies.HCC formation has indeed been linked to numerous etiological factors,including alcohol usage,hepatitis viruses and liver cirrhosis.Among the most prevalent defects in a wide range of tumours,notably HCC,is the silencing of the p53 tumour suppressor gene.The control of the cell cycle and the preservation of gene function are both critically important functions of p53.In order to pinpoint the core mechanisms of HCC and find more efficient treatments,molecular research employing HCC tissues has been the main focus.Stimulated p53 triggers necessary reactions that achieve cell cycle arrest,genetic stability,DNA repair and the elimination of DNA-damaged cells’responses to biological stressors(like oncogenes or DNA damage).To the contrary hand,the oncogene protein of the murine double minute 2(MDM2)is a significant biological inhibitor of p53.MDM2 causes p53 protein degradation,which in turn adversely controls p53 function.Despite carrying wt-p53,the majority of HCCs show abnormalities in the p53-expressed apoptotic pathway.High p53 in-vivo expression might have two clinical impacts on HCC:(1)Increased levels of exogenous p53 protein cause tumour cells to undergo apoptosis by preventing cell growth through a number of biological pathways;and(2)Exogenous p53 makes HCC susceptible to various anticancer drugs.This review describes the functions and primary mechanisms of p53 in pathological mechanism,chemoresistance and therapeutic mechanisms of HCC.

常染色体显性遗传性多囊肾家系PKD1、PKD2基因突变分析

目的:分析常染色体显性遗传性多囊肾病(ADPKD)家系基因突变位置及遗传特征。方法:应用二代测序外显子序列捕获技术,对ADPKD家系先证者PKD1、PKD2基因测序,并对8个家系成员针对突变位点进行Sanger测序筛查。并经SIF和Polyphen软件对基因突变进行蛋白功能预测。结果:发现PKD1基因1个框移突变c.2085_2086ins C(p.Ala696Argfs17X)为杂合子,造成PKD1氨基酸编码提前终止,很可能影响其蛋白功能;还发现2个错义突变杂合子(p.Ala1447Val和P.Arg739Gln,经蛋白功能预测为无害)及2个同义变异(p.Leu373Leu、p.Asn890Asn)。PKD2基因未发现框移、无义、剪切、错义或同义变异位点。其他患病的家系成员中发现p.Ala696Argfs17X突变,而正常成员中未查出此突变。结论:推测PKD1基因的框移突变(p.Ala696Argfs17X)为此家系的可疑致病性突变。

Identification and Expression Analysis of Abscisic Acid Signal Transduction Genes in Hemp Seeds

Abscisic acid(ABA)is involved in regulating diverse biological processes,but its signal transduction genes and roles in hemp seed germination are not well known.Here,the ABA signaling pathway members,PYL,PP2C and SnRK2 gene families,were identified from the hemp reference genome,including 7 CsPYL(pyrab-actin resistance1-like,ABA receptor),8 CsPP2CA(group A protein phosphatase 2c),and 7 CsSnRK2(sucrose nonfermenting1-related protein kinase 2).The content of ABA in hemp seeds in germination stage is lower than that in non-germination stage.Exogenous ABA(1 or 10μM)treatment had a significant regulatory effect on the selected PYL,PP2C,SnRK2 gene families.CsAHG3 and CsHAI1 were most significantly affected by exogenous ABA treatment.Yeast two-hybrid experiments were performed to reveal that CsPYL5,CsSnRK2.2,and CsSnRK2.3 could interact with CsPP2CA7 and demonstrate that this interaction was ABA-independent.Our results indicated that CsPYL5,CsSnRK2.2,CsSnRK2.3 and CsPP2CA7 might involve in the ABA signaling transduction pathway of hemp seeds during the hemp seed germination stages.This study suggested that novel genetic views can be brought into investigation of ABA signaling pathway in hemp seeds and lay the foundation for further exploration of the mechanism of hemp seed germination.

Study of pathogenic genes in a pedigree with familial dilated cardiomyopathy

BACKGROUND Dilated cardiomyopathy(DCM)is a genetically heterogeneous cardiac disorder characterized by left ventricular dilation and contractile dysfunction.The substantial genetic heterogeneity evident in patients with DCM contributes to variable disease severity and complicates overall prognosis,which can be very poor.AIM To identify pathogenic genes in DCM through pedigree analysis.METHODS Our research team identified a patient with DCM in the clinic.Through invest-igation,we found that the family of this patient has a typical DCM pedigree.High-throughput sequencing technology,next-generation sequencing,was used to sequence the whole exomes of seven samples in the pedigree.RESULTS A novel and potentially pathogenic gene mutation-ANK2p.F3067L-was discovered.The mutation was completely consistent with the clinical information for this DCM pedigree.Sanger sequencing was used to further verify the locus of the mutation in pedigree samples.These results were consistent with those of high-throughput sequencing.CONCLUSIONS ANK2p.F3067L is considered a novel and potentially pathogenic gene mutation in DCM.

利用PCR-SSCP技术检测中国汉族人PKD2基因的突变

目的：检测中国汉族人Ⅱ型多囊肾病基因PKD2的突变。方法：筛选临床确诊的26个中国汉族家系中31例常染色体显性遗传性多囊肾病（ADPKD）患者，提取外周血白细胞DNA，应用聚合酶链反应-单链构象多态性分析（PCR－SSCP），取异常条带标本进行核苷酸序列测定，判别PKD2外显子突变位置及类型。结果：以20例健康志愿者为对照，从31例患者中成功检测出2种突变。1种为无义突变，系PKD2外显子13的第2407位碱基由胞嚼陡置换为胸腺嘧啶，形成1个终止密码子；另1种为错义突变，系PKD2外显子4的第964位碱基由胞嘧啶置换为胸腺嘧啶，使编码氨基酸由精氨酸变为色氨酸。结论：本研究建立了PCR－SSCP直接检测我国汉族人PKD2突变方法，检测出2种基因突变，为今后开展ADPKD患者囊肿前诊断提供了实验基础。

PKD2基因在正常人和2型常染色体显性遗传性多囊肾病患者肾组织中的表达

目的 :观察 PK D2基因在正常人和 2型常染色体显性遗传性多囊肾病 (ADPKD)患者肾组织中的不同表达 ,探讨多囊肾病的发病机制。 方法 :抽提正常人肾组织细胞总 RNA ,通过 RT- PCR法获得 PK D 2基因第 12～ 13外显子 c DNA片段 ,以此为探针 ,用地高辛标记 ,对正常人和 2型 ADPKD患者肾组织分别进行原位杂交 ,并结合图像分析系统观察 PK D2基因表达情况。 结果 :正常人肾组织中 PK D2基因在 Henle襻的厚升支、远曲小管和皮质集合管有较强的表达 (平均光密度为 1.2 3± 0 .0 4 ) ;而 2型ADPKD患者肾组织中 PKD2基因仅在部分囊壁中有少量表达 (平均光密度为 0 .5 6± 0 .0 3)。 结论 :正常人肾组织中 PK D2基因表达量明显高于 2型 ADPKD患者 ,提示 PK D2基因表达降低在 2型

小鼠Pkd2基因条件性敲除打靶载体的构建

[目的]构建小鼠Pkd2条件性基因敲除打靶载体,为建立Pkd2基因条件性敲除小鼠模型奠定基础。[方法]以正常小鼠(129x1/SvJ)基因组DNA为模板,扩增小鼠Pkd2基因一段包括第9号外显子的长为9.3kb的序列,通过引入LoxP和Neo基因等步骤,建立条件性敲除Pkd2第9号外显子的条件性基因打靶载体。[结果]经多个限制性核酸酶酶切鉴定和测序证实,所构建的Pkd2基因条件性敲除打靶载体符合设计要求。[结论]成功构建小鼠条件性Pkd2基因敲除打靶载体,为建立Pkd2基因条件性敲除小鼠模型奠定基础。

染色体显性遗传性多囊肾病PKD2基因突变的检测

目的:建立检测常染色体显性遗传性多囊肾病2型(polycystic kidney disease 2,PKD2)致病基因突变的方法,检测收集的10个ADPKD家系共15例患者的PKD2基因突变情况。方法:收集江西地区经临床确诊的常染色体显性遗传性多囊肾病患者15例,采集外周静脉血5 mL,用试剂盒提取基因组DNA,采用聚合酶链式反应(PCR)扩增PKD2基因全部外显子及相近内含子区域,PCR扩增产物经分离纯化后直接进行基因序列测序,根据测序图谱进行突变分析,明确基因突变位点和类型。结果:15例常染色体显性遗传性多囊肾病(autosomal dominant polycystic kidney disease,ADPKD)患者中,检测出3个正常基因多态性位点,分别为1号外显子第420位碱基G置换为A,未引起编码氨基酸改变;1号外显子第568位碱基G置换为A,致使190位编码氨基酸由丙氨酸改变为苏氨酸;内含子靠近cDNA第844位碱基5’端的第22个碱基A置换为G。结论:可通过直接基因序列测定对PKD2进行基因突变检测,本研究所检测到的3个正常基因多态性位点均已有报道,为开展ADPKD直接基因诊断、产前诊断及症状前诊断提供了实验基础。

一个常染色体显性多囊肾家系PKD1/PKD2基因突变的鉴定

常染色体显性多囊肾（autosomal dominant polycystic kidney disease,ADPKD）是一种常染色体延迟性显性疾病。ADPKD具有遗传异质性,85%的患者由多囊肾基因1（polycystic kidney disease gene 1,PKD1）突变所致,称Ⅰ型多囊肾,15%的患者由多囊肾基因2（polycystic kidney disease gene 2,PKD2）突变所致,Ⅱ型多囊肾。除了损伤肾脏以外,ADPKD基因还累及全身多个器官.

Impact of homeobox genes in gastrointestinal cancer

Homeobox genes, including HOX and non-HOX genes, have been identified to be expressed aberrantly in solid tumors. In gastrointestinal(GI) cancers, most studies have focused on the function of non-HOX genes including caudal-related homeobox transcription factor 1(CDX1) and CDX2. CDX2 is a crucial factor in the development of pre-cancerous lesions such as Barrett's esophagus or intestinal metaplasia in the stomach, and its tumor suppressive role has been investigated in colorectal cancers. Recently, several HOX genes were reported to have specific roles in GI cancers; for example, HOXA13 in esophageal squamous cell cancer and HOXB7 in stomach and colorectal cancers. HOXD10 is upregulated in colorectal cancer while it is silenced epigenetically in gastric cancer. Thus, it is essential to examine the differential expression pattern of various homeobox genes in specific tumor types or cell lineages, and understand their underlying mechanisms. In this review, we summarize the available research on homeobox genes and present their potential value for the prediction of prognosis in GI cancers.

斑马鱼pkd2基因功能的初步研究

PKD2是一个存在于纤毛细胞膜表面的6次跨膜蛋白,其功能缺陷是造成人类多囊肾(PKD)疾病的主要因素之一。本文以斑马鱼作为模式生物,利用CRISPR/Cas9方法获得了一个新的pkd2突变体。与之前报道的pkd2突变体不同,该突变体仅缺失C端胞内区。发现该胞内区的缺失足以影响PKD2的功能,突变体产生体轴向背侧弯曲的特殊表型。利用lefty2作为探针进行原位杂交的实验表明,突变体存在左右不对称缺陷。同时,进一步免疫组化的结果表明,pkd2的突变并未影响纤毛的发育。此外,我们对突变体中胶原蛋白的表达进行检测,结果并未发现明显异常,说明胶原蛋白可能不是影响pkd2突变体体轴弯曲的因素。最后,我们发现用FGF信号抑制剂处理胚胎,可使得突变体体轴弯曲的程度降低,揭示FGF可能参与影响了pkd2突变体体轴的发育。

The relationship of Imp2 and DR3 genes with susceptibility to type Ⅰ diabetes mellitus in south China Han population

AIN To study the relationship of Imp2 and DR3genes with type Ⅰ diabetes mellitus.NETHODS Imp2 genotypes and DR3 wereidentified in 68 patients with type Ⅰ diabetesmellitus(Ⅰ-DM)and 71 healthy controls.Then,Ⅰ-DM patients and controls were respectivelyallocated into DR3-positive and DR3-negativegroups.The frequencies of Imp2 and DR3 genein random subjects,and Imp2 genotypes in DR3-matched subjects were compared between Ⅰ-DMpatients and controls.At the same time,Ⅰ-DMpatients were divided into 3 groups based on theonset age of diabetics:group A≤14 years,group B 15-30 years and group C≥31 years.RESULTS The frequency of DR3 in Ⅰ-DMpatients was significantly higher than that incontrols(47% vs 21%,P【0.005),and it wassignificantly higher in group A than that in groupB+C(70% vs 36%,x^2=7.07,P【0.01).Therewas a significant difference among groups withdifferent onset age of diabetics(x^2=8.19,rp=0.33,P【0.05).In random subjects,thefrequency of Imp2.R/R in Ⅰ-DM patients waslower(43% vs 61%,P【0.05)and Imp2.R/Hhigher(53% vs 28%,P【0.05)than that incontrols,and there was no significant differenceamong groups with different onset age ofdiabetics.In DR3-positive subjects,thefrequency of Imp2.R/R in Ⅰ-DM patients waslower(47% vs 87%,P【0.05)and Imp2-R/H higher(47% vs 13%,P【0.05)than that incontrols.In DR3-negative subjects,thefrequency of Imp2.R/H in Ⅰ-DM patients washigher than that in controls(58% vs 32%,P【0.01),but the frequency of Imp2-R/R and Imp2H/H was not significantly different betweenthese two groups.CONCLUSION DR3 gene may be one of thesusceptible genes of Ⅰ-DM,and significantlyrelated to the onset age of diabetics,and thepersons with DR3 may have an younger onsetage of diabeteS.The Imp2-R/R may be theprotective genotype of Ⅰ-DM,and Imp2-R/H thesusceptible genotype.These were not affectedby DR3 gene.Imp-2 genotypes were not relatedwith the onset age of diabetics.

胃癌组织中FOXP1和PKD2的表达及临床意义

目的观察胃癌组织中FOXP1和PKD2蛋白表达变化,并研究其临床意义。方法选取2013年1月至2015年12月我院确诊的胃癌患者80例,取胃癌组织和癌旁组织。采用qRT-PCR法定量检测FOXP1、PKD2 mRNA表达量,并分析二者表达量的相关性;采用免疫组化染色法检测FOXP1和PKD2蛋白的表达,分析FOXP1、PKD2蛋白与胃癌临床病理特征及预后的关系。结果胃癌组织中FOXP1、PKD2 mRNA及蛋白表达显著高于癌旁组织(P<0.05)。胃癌组织中FOXP1与PKD2 mRNA表达量呈正相关(r=0.563,P<0.005)。胃癌组织中FOXP1蛋白表达与患者分化程度、浸润程度、TNM分期、淋巴结转移和3年生存情况有关(P<0.05)。胃癌组织中PKD2蛋白表达与患者肿瘤大小、分化程度、浸润程度、TNM分期、淋巴结转移和3年生存情况有关(P<0.05)。FOXP1、PKD2高表达患者的生存率均显著低于低表达患者(P<0.05)。结论转录因子FOXP1和PKD2在胃癌组织中表达量高于癌旁组织,与肿瘤大小、分化程度等病理特征参数及预后密切相关,二者可能共同参与胃癌进展,影响胃癌患者预后。