北方汉族人群维生素D受体基因Bsm I位点多态性与前列腺癌易感性的相关性分析

目的 :研究低发病的中国汉族人群维生素D受体基因 (VDRG)BsmⅠ 位点单核苷酸多态性 (SNP)与前列腺癌的关系 ,探讨不同种族前列腺癌发病的基因差异。　方法 :收集中国北方地区汉族人群 10 3例前列腺癌病人及10 6例健康对照者外周血标本 ,应用变性高效液相色谱 (DHPLC)检测VDRG第 8内含子BsmⅠ多态位点 ,并对该位点SNP分布进行分析。　结果 :BsmⅠ 多态位点bb、Bb、BB基因型和等位基因在北方地区汉族前列腺癌病人及对照者中的分布频率差异无显著性 (P >0 .0 5 ) ,基因型分布频率分别为 92 .2 3%、7.77%、0和 94.34 %、5 .6 6 %、0 ;等位基因B、b分别为 3.88%、96 .12 %和 2 .91%、97.0 9%,而与高发病人群的分布相比有显著不同。　结论 :VDRGBsmⅠ多态性在低发病的中国汉族人群与前列腺癌无相关 ,其分布与高发病人群有明显差异 ,提示VDRGBsmⅠ多态性可能是前列腺癌发病种族差异的原因之一。     

湖北地区汉族人群维生素D受体基因起始密码单核苷酸多态性与前列腺癌的相关性分析

目的 :了解维生素D受体 (vitaminDreceptor,VDR)基因起始密码单核苷酸多态性与前列腺癌的关系 ,探讨前列腺癌发病的分子机制。　方法 :提取 80例前列腺癌患者及 96例健康男性对照者外周血标本中基因组DNA ,应用聚合酶链反应 限制性片段长度多态性 (PCR RFLP)及DNA测序技术检测并分析了VDR基因起始密码单核苷酸多态性在两组中的分布。　结果 :前列腺癌病例和对照组FokⅠ等位基因频率分布均符合Hardy Weinberg定律 ,其FokⅠ多态位点FF、Ff、ff基因型分布频率分别为 32 .5 %、5 0 .0 %、17.5 %和 2 5 .0 %、5 3.13%、2 2 .87% ;等位基因F、f分布频率分别为 4 5 %、5 5 %和 5 1.5 6 %、4 8.4 4 % ,在湖北地区汉族前列腺癌患者及对照者中的分布频率差异无显著性 (P >0 .0 5 )。　结论 :VDR基因起始密码的单核苷酸多态性可能与低发病的湖北地区汉族人群的前列腺癌发生无关。     

北方汉族人群维生素D受体基因BsmⅠ位点多态性与前列腺癌易感性的相关性分析

目的 :研究低发病的中国汉族人群维生素D受体基因 (VDRG)BsmⅠ 位点单核苷酸多态性 (SNP)与前列腺癌的关系 ,探讨不同种族前列腺癌发病的基因差异。　方法 :收集中国北方地区汉族人群 10 3例前列腺癌病人及10 6例健康对照者外周血标本 ,应用变性高效液相色谱 (DHPLC)检测VDRG第 8内含子BsmⅠ多态位点 ,并对该位点SNP分布进行分析。　结果 :BsmⅠ 多态位点bb、Bb、BB基因型和等位基因在北方地区汉族前列腺癌病人及对照者中的分布频率差异无显著性 (P >0 .0 5 ) ,基因型分布频率分别为 92 .2 3%、7.77%、0和 94.34 %、5 .6 6 %、0 ;等位基因B、b分别为 3.88%、96 .12 %和 2 .91%、97.0 9%,而与高发病人群的分布相比有显著不同。　结论 :VDRGBsmⅠ多态性在低发病的中国汉族人群与前列腺癌无相关 ,其分布与高发病人群有明显差异 ,提示VDRGBsmⅠ多态性可能是前列腺癌发病种族差异的原因之一。     

南京地区汉族人群VDR基因多态性与前列腺癌易感性的关系研究

<正>前列腺癌(prostate cancer,PCa)是危害中老年男性健康的常见恶性肿瘤之一。欧美及非洲国家的PCa发病率较高[1],中国的PCa发病呈上升趋势。PCa的发病与遗传、激素、环境等因素密切相关[2]。维生素D可以抑制前列腺细胞的生长和分化,干扰前列腺肿瘤的生长和转移[3]。维生素D受体(vitamin D receptor,VDR)蛋白在前列腺组织细胞中广泛表达,VDR基因的多态性是PCa发病的潜在危险     

贵州地区汉族人群BChE基因单核苷酸多态性与胆囊结石发病风险相关性分析

背景与目的:研究表明基因变异与胆囊结石生成密切相关.本研究通过病例对照研究探讨贵州地区汉族人群肥胖基因BChE单核苷酸多态性(SNP)与胆囊结石疾病发病风险的相关性,为其调控胆囊结石形成的分子机制提供研究基础.方法:选取171例贵州省汉族胆囊结石患者和125例健康对照者入组.从胆囊结石组和健康对照组的全血样本中提取全基...     

汉族人群白细胞介素-6基因多态性与骨关节炎易感性的相关性研究

目的:探讨汉族人群骨关节炎易感性与白细胞介素(IL)-6基因启动子区-174G/C基因多态性的相关性。方法:选取青岛大学附属医院2012年3月至2013年3月收治的膝关节内外侧间隙高度差1.5 mm以上、Kellgren-Lawrance评分为3~4分的汉族原发性膝关节骨关节炎患者448例,招募汉族528例健康志愿者作...     

福建地区汉族人群VDR基因TaqⅠ多态性与腰椎间盘退行性变的相关性研究

目的研究维生素D受体（VDR）基因TaqⅠ多态性与福建地区汉族人群腰椎间盘退行性变的关系。方法应用限制性片段长度多态性聚合酶链反应法（PCR-RFLP）对78例腰椎椎间盘退行性疾病（DDD）（腰椎DDD组）及79例非腰椎DDD的健康体检者（对照组）的外周血进行VDR基因TaqⅠ多态性检测,分析2组间基因型和等位基因的频率分布;研究其中小于45岁者基因型及基因频率分布与椎间盘退变程度的关系。结果腰椎DDD组基因型分布：TT 96.2%（75/78）,Tt 3.8%（3/78）;对照组TT 81.0%（64/79）,Tt 19.0%（15/79）。其中TT基因型分布在2组中的差异有统计学意义（P〈0.05）。腰椎DDD组与对照组等位基因T分布频率分别为98.1%（153/156）和90.5%（143/158）,t分别为1.9%（3/156）和9.5%（15/158）,差异有统计学意义（P〈0.05）;在MRI分组中VDR基因TaqⅠ酶切位点的基因型和等位基因频率在组中分布差异有统计学意义（P〈0.05）。结论 VDR基因TaqⅠ多态性与福建地区汉族人群腰椎间盘退行性变发生有一定关系。     

陕西关中人群骨质疏松性骨折与雌激素受体β基因的关联分析

目的 探讨骨质疏松性髋部骨折(OHF)与雌激素受体β(ER-β)基因多态性的相关性.方法 采用群体关联分析的方法,对来自陕西关中人群的400例骨质疏松性髋部骨折患者和400例正常对照进行3个单核苷酸多态性(SNP)位点和单体型的病例对照研究.结果 共700个个体分型成功,haploview关联分析的结果 表明rs7154455,rs960070的多态性对骨折有影响;单体型分析的结果 表明,ER-β单体域GGT和CCT与骨折存在关联.结论 ①ER-β基因和我们所研究的陕西关中汉族群体的OF发病率关联;②ER-β基因可能对中国陕西关中汉族人群髋部OF发病率的变化起到影响.     

哈尔滨地区部分汉族人群维生素D受体Bsm I基因多态性与骨质疏松性骨折关系的研究

目的旨在了解哈尔滨地区部分汉族人群维生素D受体(VDR)BsmⅠ基因多态性与骨质疏松性骨折患者骨密度(BMD)的相关关系。方法98例研究对象按骨质疏松性骨折诊断标准分2组,骨量正常组:48人;骨质疏松性骨折组:50人。聚合酶链反应限制性片断长度多态性(PCR-RFLP)技术检测98例受试者VDRBsmⅠ基因型。测试受试者腰椎2～4(L2-4),股骨颈(Neck)、大转子(Troch)、Wards三角、桡骨远端(Radius)5个部位骨密度(BMD)。结果骨折组各部位骨密度均显著低于对照组各部位骨密度,差异具有显著性(P<0.01)。受试者VDR基因型未发现BB型,检出Bb型16人,占16.3%,bb型82人,占83.7%。b和B等位基因频率分别为91.8%、8.2%,Bb、bb两基因型在两组之间的分布无差异;VDR两基因型与各部位BMD之间,虽然在腰椎2～4、股骨颈、大转子和桡骨远端等4个部位Bb基因型比bb基因型的BMD高,但结果没有统计学意义。结论这组哈尔滨地区人群VDR基因型分布以bb型、Bb型为主,VDR基因BsmⅠ多态性与骨密度之间没有相关关系。     

白介素-16基因多态性与膝关节原发骨性关节炎易感性韵关联研究

[目的]探讨白介素-16(IL-16)基因多态性与膝关节原发性骨性关节炎(OA)的易感关联.[方法]采用病例-对照研究,纳入95例中国汉族膝OA患者和95例年龄、性别匹配的健康对照者.用聚合酶链反应和限制性片段长度多态性等方法筛查IL-16基因的三个单核苷酸多态性(SNP)位点,并测序验证酶切结果.进行拟和优度x2检验、H-W平衡检验、连锁不平衡分析、单个位点和单倍型的非条件Logistic回归,分析IL-16基因多态性与膝OA的易感关联.[结果]三个SNP位点均符合H-W平衡.显性遗传模式非条件Logistic回归显示,rs11556218位点中,T/G基因型对膝OA可能有保护作用(OR=0.40,95%CI=0.21-0.73,P=0.008);rs4072111中,C/T可能增加发病风险(OR=1.98,95%CI=1.08-3.65,P=0.036).连锁不平衡分析提示rs11556218与rs4778889存在连锁不平衡(D'=0.625,r2=0.217),单倍型TTT可能增加发病风险(OR=2.42,95%CI=1.15-5.10,P=0.021),GCC可能减低发病风险(OR=0.43,95%CI=0.19-0.98,P=0.045).[结论]中国汉族人群中,IL-16基因的rs11556218、rs4072111、rs4778889位点的多态性可能与膝OA易感性相关.     

CALM2基因多态性与青少年特发性脊柱侧凸遗传易感性的关联性研究

目的探讨钙调蛋白2基因（CALM2基因）与青少年特发性脊柱侧凸遗传易感性的相关性。方法采集北京协和医院骨科确诊的汉族青少年特发性脊柱侧凸患者107例,对照组107例,病例组按照PUMC分型进行分组。采外周血试剂盒提取DNA。根据国际人类基因组单倍体型图计划提供的基因型数据,选取CALM2基因的SNPs位点,应用VeraCode GoldenGate Genotyping Assay基因芯片进行SNPs基因型鉴定。用关联分析法探索CALM2基因与患者发病及临床表型之间的关系。结果 CALM2的rs10153674等位基因在病例组和对照组中的分布频率统计学上存在显著差异（P=0.003）,rs10153674位点等位基因G与AIS的易感性升高有关。结合PUMC分型,rs10153674和rs1027478基因型在PUMCI型和对照组中的分布频率统计学上存在显著差异（P值分别为0.038,0.006）,rs10153674基因型G/G、rs1027478基因型A/G与PUMCI型的发生有关。结论 CALM2基因遗传变异可能与青少年特发性脊柱侧凸发生相关,有可能是影响AIS易感性的重要因素。PUMCI型AIS的发生可能与rs10153674和rs1027478基因型多态性有关。     

Association of vitamin-D and calcitonin receptor gene polymorphism in paediatric nephrolithiasis

We investigated the role of vitamin-D receptor gene (VDR) and calcitonin receptor (CTR) gene polymorphism in childhood nephrolithiasis in the north Indian population. A control group of 60 healthy paediatric individuals (age range 4–16 years) and 50 paediatric patients (age range 2–14 years) with kidney stones were examined. Polymorphism in both genes (VDR and CTR) was detected by using PCR-based restriction analysis. There was a statistically significant difference between the two groups for the genotypes of the VDR gene Fok-I polymorphism (P =0.007) and the CTR gene (P =0.048) polymorphism. The odds ratio (95% Confidence Interval) for the C allele in those at risk of stone disease was 1.83 (0.82–4.09) in VDR gene polymorphism and 1.99 (0.90–4.39) in the case of CTR gene polymorphism. Our results suggest that the effects of VDR (Fok-I) and CTR gene polymorphism contribute to the understanding of the pathogenesis of urinary calculi. It is also suggestive of a potential candidate gene in the search for genetic causes of paediatric calcium oxalate nephrolithiasis.     

Induction of chemokine (C-C motif) ligand 2 by sphingosine-1-phosphate signaling in neuroblastoma

Background/purpose

Neuroblastoma (NB) is the most common extracranial solid tumor of childhood. Preliminary data derived from a human angiogenesis array in NB showed that the bioactive lipid sphingosine-1-phosphate (S1P) induced the secretion of several angiogenesis-related proteins including the important inflammatory factor chemokine (C-C motif) ligand 2 (CCL2). In the present study, we investigated the mechanism of S1P-induced CCL2 expression in NB.

Methods

Quantitative real-time PCR and CCL2 ELISA were conducted to detect the mRNA expression and protein secretion of CCL2 in NB cells. Gain and loss of function studies were performed by using specific S1PR antagonists, adenoviral transduction and siRNA transfection. Macrophage F4/80 receptor in NB xenografts was detected by quantitative real-time PCR and immunohistochemistry staining.

Results

S1P induced CCL2 mRNA expression and protein secretion in a time- and concentration-dependent manner in NB cells. Blockade of S1P₂ signaling using the selective S1P₂ antagonist JTE-013 inhibited S1P-induced CCL2 expression. Overexpression of S1P₂ by adenoviral transduction increased CCL2 secretion while knockdown of S1P₂ by siRNA transfection decreased S1P-induced CCL2 secretion in NB cells. Macrophage infiltration, as detected by F4/80 staining, was significantly decreased in JTE-013-treated NB xenografts.

Conclusions

Taken together, our data for the first time demonstrate that S1P induced the macrophage-recruiting factor CCL2 expression in NB cells via S1P₂, providing new insights into the complicated functions of S1P₂ in cancer.     

Association of microRNAs genes polymorphisms with rheumatoid arthritis in Egyptian female patients

ObjectiveTo investigate whether miRNA-499 (rs3746444) and miRNA-146a (rs2910164) genes polymorphisms are independent factors for rheumatoid arthritis (RA) in Egyptians, and whether they influence disease severity and activity.MethodsTwo hundred and seventeen RA patients and 245 healthy controls were enrolled in this study. Polymorphisms of miRNA-146a and miRNA-499 genes were detected using polymerase chain reaction restriction fragment length polymorphism (PCR-RFLP).ResultsThe miRNA-499 CT genotype was an independent factor of RA. The miRNA-499 CT, CC genotypes and C allele frequencies were significantly increased in erosive RA group. Moreover, the heterozygote CT had more severe and more active form of the disease compared with homozygote CC or TT. However, we did not find any significant association of miRNA-146a polymorphism with RA risk, severity, and activity.ConclusionThe miRNA-499 polymorphism is an independent factor of RA, and influences disease severity and activity.     

Association of calmodulin1 gene polymorphisms with susceptibility to adolescent idiopathic scoliosis

Objective: To investigate whether: (i) rs12885713 (?16C > T) and rs5871 polymorphisms in the Calmodulin1 (CALM1) gene are predisposing factors for adolescent idiopathic scoliosis (AIS); and (ii) different single nucleotide polymorphisms (SNP) correlate with different subtypes of AIS. Methods: A total of 100 AIS patients with Cobb angle above 30° were recruited for this study together with 100 healthy controls. Curve pattern, Cobb angle, and Risser sign were recorded. Two polymorphic loci, rs12885713 (?16C > T) and rs5871 loci, of the CALM1 gene were analyzed. All patients were grouped according to the Peking Union Medical College (PUMC) classification, the apical location of the major curve, and the Cobb angle. Results: There was a statistically significant difference in the distribution of rs12885713 site polymorphism (P = 0.034) between PUMC type II (double curve) patients and controls, in the distribution of rs12885713 site polymorphism (P = 0.009) between lumbar curve cases and controls and in the distribution of rs5871 site polymorphism (P = 0.035) between thoracic curve patients and controls. Conclusion: Different subtypes of AIS might be related to different SNP. The susceptibility of PUMC type II (double curve) AIS and lumbar curve might be related to CALM1 rs12885713 site polymorphism, while rs5871 site polymorphism might be a risk indicator for thoracic curve cases.     

汉族人群白介素17受体C基因单核苷酸多态性与青少年特发性脊柱侧凸的相关性

【摘要】　目的：探讨白介素17受体C（IL-17RC）基因单核苷酸多态性与中国汉族人群青少年特发性脊柱侧凸（adolescent idiopathic scoliosis,AIS）易感性之间的相关性。方法：收集529例AIS女性患者及512例正常同龄女性青少年的静脉血标本,采用聚合酶链反应－限制性片段长度多态性（PCR-RFLP）方法鉴定和统计两组人群IL-17RC基因rs708567和rs279545多态性位点的基因型及等位基因分布频率;比较两组间不同多态性位点各基因型及等位基因分布频率的差异。结果：研究Power值（81%）大于80%,AIS患者组及正常对照组各多态性位点的基因型分布均符合Hardy-Weinberg遗传平衡定律。AIS组rs708567多态性位点GG基因型和G等位基因的分布频率显著高于对照组GG基因型（90.17% vs. 85.55%,P=0.023）和G等位基因（95.1% vs. 92.8%,P=0.028）的分布频率;携带GG基因型青少年中AIS的发病率约为携带AG基因型青少年的1.5倍（OR值=1.55;95% CI:1.45~3.11）。rs279545多态性位点各基因型及等位基因的分布频率在两组间均无统计学差异。结论：中国汉族人群中IL-17RC基因单核苷酸多态性与AIS的发生相关。     

胃癌患者血清中CCL20和CCR6的表达及临床意义

目的 测定趋化因子CCL20及其受体CCR6在胃癌患者的血清中表达,并探讨CCL20和CCR6表达水平与胃癌的发生发展关系.方法 应用荧光定量PCR技术、流式细胞术和酶联免疫吸附法测定50例胃癌患者和30例健康对照者外周血中CCL20和CCR6的mRNA和蛋白表达水平.结果 胃癌患者CCL20和CCR6的mRNA表达均显著高于健康对照组(P<0.01);胃癌患者外周血中CCL20和CCR6的蛋白表达分别为(45.4±10.9)pg/mL和(7.11±1.03)%,显著高于健康人的(18.6±4.7)pg/mL和(1.83±0.43)%(P<0.01),且其升高程度与胃癌临床分期有明显关系.结论 胃癌患者CCL20和CCR6的表达与胃癌的发生发展存在一定的相关性,可能参与胃癌的发病过程,推测其可能作为胃癌诊断、复发和转移的分子标志物.     

白介素-18基因多态性与结直肠癌易感性的关系

目的探讨白介素-18（m-18）基因单核苷酸多态性及其单倍型与结直肠癌易感性之间的关系。方法以170例结直肠癌患者和160名健康对照者为研究对象,应用聚合酶链反应一限制性片段长度多态性（PCR-RFLP）的方法对IL．18基因-137G／C、-607C／A单核苷酸多态性进行基因分型,同时用SHEsis软件分析IL-18基因的连锁不平衡及单倍型频率。结果IL-18基因-607C／A多态性在结直肠癌患者和健康人群中的分布差异无统计学意义（P〉0．05）．而IL-18基因-137G／C多态性在两组人群中的分布差异有统计学意义（P〈0．05）。等位基因频率的相对风险分析显示．C等位基因携带者患结直肠癌的风险是G等位基因的1．814倍（OR=1．814,95％CI：1．246～2．642）。联合基因型分析显示,IL-18基因-137G／C、-607C／A单核苷酸多态性存在着强烈的连锁不平衡（ID＇｜=0．945）,-137C／-607A单倍型频率在结直肠癌患者中显著高于健康人群（P〈0．05）。-137C／-607A单倍型携带者显著增加了结直肠癌的发病风险（OR=1．637,95％CI：1．100～2．437）。结论IL—18基因-137G／C多态性和-137C／-607A单倍型与结直肠癌的发病具有相关性．其中-137C等位基因可能是结直肠癌的遗传易感基因。     

Association of IL-2RA and IL-2RB genes with erosive status in early rheumatoid arthritis patients (ESPOIR and RMP cohorts)

ObjectivesTo assess the impact of single nucleotide polymorphisms (SNPs) in IL-2RA (rs2104286) and IL-2RB (rs743777 and rs3218253) genes on the risk of erosions in rheumatoid arthritis (RA) patients.MethodsThis work is derived from 2 prospective cohorts of early RA: ESPOIR (n = 439) and RMP (n = 180). The proportions of patients with erosions at baseline and 1 year according to the genotypes of IL2RA (rs2104286) or the haplotypes constructed with the 2 SNPs of IL2RB were compared in the whole population and in ACPA positive patients. A meta-analysis assessing the risk of erosion depending on the haplotypes of the 2 SNPs of IL-2RB was performed using the Mantel-Haenszel method. A multivariate model was used to assess the independent effect of the haplotypes of IL-2RB on the risk of erosions.ResultsThe AC haplotype of IL-2RB carriage was significantly associated with the rate of erosions in ACPA positive patients in ESPOIR cohort (rate of erosions: AC/AC: 78% versus GC or GT/GC or GT: 44%, p = 0.001). A meta-analysis of ESPOIR and RMP cohorts confirmed that the carriage of AC haplotype was significantly associated with the rate of erosions at 1 year in the whole sample (OR[95%CI] = 1.92[1.14–3.22], p = 0.01) and in ACPA positive patients (OR[95%CI] = 3.34[1.68–6.67], p = 0.0006). A multivariate model in ESPOIR cohort demonstrated the independent effect of the carriage of the AC haplotype (6.03[1.94–18.69], p = 0.002) on the risk of erosions in ACPA+ patients.ConclusionA haplotype constructed with 2 SNPs located on IL-2RB gene was associated with erosive status in early RA.