脓毒症易感性与IRAK-M基因多态性的相关性

目的 探讨脓毒症易感性与IRAK-M基因多态性的关系.方法 选择脓毒症患者82例为实验组,118例健康人群为对照组.应用聚合酶链反应(PCR)-限制性片段长度多态性分析法(RFLP)分析IRAK-M+22148G＞A基因多态性.结果 脓毒症组IRAK-M+22148G＞A位点G/G基因型频率高于对照组(81.7%比28.8%),差异有统计学意义(P＜0.01),G等位基因频率高于对照组(84.1%比33.9%,P＜0.01),差异有统计学意义,脓毒症组肿瘤坏死因子(TNF)-α、白细胞介素(IL)-6水平高于对照组[(843.00±97.34)ng/L比(287.00±79.12)ng/L;(741.00±65.61)ng/L比(194.00±58.47)ng/L],差异有统计学意义(P＜0.05);G/G基因型与脓毒症之间有明显相关(OR=11.03,95%CI:5.55～21.94).结论 IRAK-M+22148G/A基因多态性与脓毒症的易感性相关,G/G基因型者易患脓毒症.

Abstract：

Objective To determine the association between the genetic polymorphisms of IRAK-M and the susceptivity of sepsis. Methods Two candidate gene loci in + 22148G ＞ A patients with 82 sepsis infection and 118 heahhy controls were investigated. The polymorphisms were assessed by the polymerase chain reaction (PCR) and the restrict fragment length polymorphisms (RFLP). Results In sepsis group and control group, the frequency of G/G gene was 81.7% and 8. 8% ( P ＜0. 01 ) and that of G allele was 84.1% and 33.9% ( P ＜0. 01 ), respectively. The levels of tumor necrosis factor (TNF) -α and interleukin (IL) -6 in sepsis group were higher than in control group [ ( 843.00±97.34) vs (287.00±79.12) ng/L;(741.00±65.61) vs (194.00±58.47)ng/L,P＜0.05].The G/G genotype was associated with sepsis (OR=11.03,95% CI=5.55-21.94).Conclusion The genetic polymorphism of +22148 site of IRAK-M gene is associated with the susceptivity of sepsis.The G/G genotype is susceptive to sepsis.     

腰椎间盘退变性疾病与COL9A2基因多态性的关系

目的 探讨COL9A2基因多态性与腰椎间盘退变性疾病(DDD)的关系.方法 采用"病例-对照"研究方法:125例中国汉族DDD患者(DDD+)与126例中国汉族非DDD受访者(DDD-),用SNP分型系统-SNPstream UIT(Cenotyping System)对所有样本的所选SNP位点行基因型鉴定.对检测数据分别行拟和优度x2检验、基于等位基因频率/基因型的关联分析.结果 共筛查SNPl(rs12722877)、SNP2(rs3737820)、SNP3(rs209914)和SNP4(rs6676013)4个位点.病例组中和对照组中,两个位点的基因型分布均符合Hardy-Weinberg平衡;病例/对照组中等位基因频率分别为:SNP1C=228(91%)/22(9%)、SNP1G=235(93%)/17(7%),SNP2A=214(86%)/36(14%)、SNP2T=223(89%)/27(11%),SNP3A=237(95%)/13(5%)、SNP3C=238(94%)/14(6%),SNP4C=30(12%)/220(88%)、SNP4T=26(10%)/226(90%),差异无统计学意义(P＞0.05).病例/对照组中基因型频率差异无统计学意义(P＞0.05).结论 COL9A2基因可能不是决定中国汉族人群腰椎DDD的主要危险因素.

Abstract：

Objective To investigate the association between COL9A2 gene polymorphism with lumbar degenerative disc disease (DDD) in Chinese Han population. Methods A total of 125 DDD patients (58 males and 67 femals, aged 51.8 + 10. 6), and 126 controls matched in sex and age (64 males,62 femals, aged 45.7 + 8. 2) were recruited in the case-control study. Peripheral blood was collected for DNA isolation. Results Based on NCBI Genebank, corresponding single nucleotide polymorphisms-SNP1 ( rs12722877), SNP2 ( rs3737820), SNP3 (rs209914) and SNP4 (rs6676013) were identified. Hardy-Weinberg equilibrium was analyzed in both case and control groups. Genotying of all selected SNPs was done by SNPstream technology. The association analysis between phenotyepes and SNPs was conducted.Reslults NPI (rs12722877), SNP2 (rs3737820), SNP3 (rs209914) and SNP4 (rs6676013) were genttyped, and the polymorphisms distributed in line with Hardy-Weinberg equilibrium in case and contral groups. There was no significant difference in allele frequency of SNP1C, SNPIG, SNP2A, SNP2T,SNP3A, SNP3C, SNP4C and SNP4T between case group (91%, 93%, 86%, 89%, 95%, 94%, 12%,and 10%, respectively) and control group (9%, 7%, 14%, 11%, 5%, 6%, 88%, and 90% respectively). No significant difference in genotype frequencies of SNP was found between case group and control group, too (all P＞0.05). Conclusion COL9A2 gene may not be associated with lumbar DDD in ChineseHan population.     

1667例汉族前列腺癌人群前列腺癌易感性基因多态性验证分析

目的:前列腺癌在工业化国家发病率居男性恶性肿瘤首位,在我国前列腺癌近年发病率不断上升,成为泌尿系统常见恶性肿瘤。本文通过前列腺癌基因多态性分析研究汉族人群前列腺癌易感性危险位点。方法:取1 667例前列腺癌患者与1 525例对照组外周血样双盲利用Sequenom技术进行40个前列腺癌危险位点的SNP分析。结果:40个公认的前列腺癌位点检测结果有16个位点与前列腺癌明显相关(P<0.05);同时发现在不同人种中位于8q24的1、2、5位点与10q11的MSMB编码区及22q13.2编码TTLL1/BIK区域共同决定前列腺癌易感性。结论:汉族前列腺癌人群前列腺癌基因多态性分析结果显示:rs1465618、rs721048、rs12621278、rs7679673、rs12653946、rs339331、rs1512268、rs10086908、rs16901979、rs1447295、rs10993994、rs10896449、rs902774、rs9600079、rs11649743、rs5759167与前列腺癌易感性明显相关。     

冠心病与内皮型一氧化氮合酶基因多态性的关系

目的 探讨内皮型一氧化氮合酶(eNOS)基因-786T/C,4a4b,894G/T等3个多态性位点与冠心病(CAD)发病相关.方法 对146例中国汉族人群CAD患者和113例正常对照进行遗传学分析,应用聚合酶链反应-限制性片段长度多态性(PCR-RFLP)和PCR技术分析2个SNP位点即-786T/C和894G/T,以及1个VNTR位点4a4b,检测各位点基因型和等位基因频率,采用HaploView 4.0及SPSS 13.0软件经x2检验比较两组间各位点基因型及等位基因频率的差异.结果 CAD组中eNOS基因-786T/C位点CC基因型频率为2.0%,4a4b位点4a/4a基因型频率为5.4%,对照组eNOS基因-786T/C位点CC基因型频率为0.0%,4a4b位点4a/4a基因型频率为0.9%,差异有统计学意义(P＜0.05).CAD组和对照组在eNOS基因的894G/T位点等位基因和基因型频率分布差异均无统计学意义(P＞0.05).结论 eNOS基因-786T/C和4a4b多态性与中国汉族人群CAD存在关联,C等位基因和4a等位基因可能是CAD发病的危险因素.eNOS基因894G/T位点与CAD发病无明显相关.

Abstract：

Objective To investigate the relationship between the 3 polymorphisms ( -786T/C,4a4b,894G/T) in endothelial nitric oxide synthase (eNOS) gene and coronary artery disease (CAD).Methods 146 patients with CAD and 113 healthy unrelated individuals in a Chinese Han nation were involved.The genotype and allele frequency of each polymorphism of the eNOS gene in these patients and normal controls were examined by using polymerase chain reaction-restriction fragment length polymorphisms (PCR-RFLP) or PCR methods.Genotypes and allele frequency were analyzed by HaploView 4.0 and SPSS13.0 software.Results The frequency of CC genotype of the -786T/C was 2.0%,and that of 4a/4a genotype of the 4a4b was 5.4% in CAD.The frequency of CC genotype of the - 786T/C was 0.0%,and that of 4a/4a genotype of the 4a4b was 0.9% in controls ( P＜0.05 ).There were significant differences in both allele and genotype frequency of -786T/C and 4a4b between CDA group and control group.Between patients with CAD and controls,there were no significant differences in the frequency of the genotypes and alleles of the 894G/T in eNOS gene.Conclusion The - 786T/C and 4a4b polymorphisms of eNOS gene may be associated with CAD.The individuals with C allele of - 786T/C and 4a allele of 4a4b are susceptible to CAD.There is no significant correlation between 894G/T polymorphism in eNOS gene and CAD.     

Association of gene variants with susceptibility to type 2 diabetes among Omanis

AIM:To investigate the association of 10 known common gene variants with susceptibility to type 2diabetes mellitus(T2D)among Omanis.METHODS:Using case-control design,a total of992 diabetic patients and 294 normoglycemic Omani Arabs were genotyped,by an allelic discrimination assay-by-design TaqMan method on fast real time polymerase chain reaction system,for the following gene variants:KCNJ11(rs5219),TCF7L2(rs7903146),CDKAL1(rs10946398),CDKN2A/B(rs10811661),FTO(rs9939609 and rs8050136),IGF2BP2(rs4402960),SLC30A8(rs13266634)CAPN10(rs3792267)and HHEX(rs1111875).T2D patients were recruited from the Diabetes Clinic(n=243)and inpatients(n=749)at Sultan Qaboos Univesity Hospital(SQUH),Muscat,Oman.Adult control participants(n=294)were volunteers from the community and from those visiting Family Medicine Clinic at SQU,for regular medical checkup.The difficulty in recruiting Omani participants with no family history of diabetes was the main reason behind the small number of control participants in this study.Almost all volunteers questioned had a relativewith diabetes mellitus.Inspite of the small number of normoglycemic controls in this study,this sample was sufficient for detection of genes and loci for common alleles influencing T2D with an odds ratio of≥1.3reaching at least 80%power.Data was collected from June 2010 to February 2012.RESULTS:Using binary logistic regression analysis,four gene variants showed significant association with T2D risk:KCNJ11(rs5219,P=5.8×10~(-6),OR=1.74),TCF7L2(rs7903146,P=0.001,OR=1.46),CDKAL1(rs10946398,P=0.002,OR=1.44)and CDKN2A/B(rs10811661,P=0.020,OR=1.40).The fixation index analysis of these four gene variants indicated significant genetic differentiation between diabetics and controls{[KCNJ11(rs5219),P0.001],[TCF7L2(rs7903146),P0.001],[CDKAL1(rs10946398),P0.05],[CDKN2A/B(rs10811661),P0.05]}.The highest genotype variation%between diabetics and controls was found at KCNJ11(2.07%)and TCF7L2(1.62%).This study was not able to detect an association of T2D risk with gene variants of IGF2BP2(rs4402960),SLC30A8(rs13266634),CAPN10(rs3792267)and HHEX(rs1111875).Moreover,no association was found between FTO gene variants(rs9939609 and rs8050136)and T2D risk.However,T2D risk was found to be significantly associated with obesity(P=0.002,OR=2.22);and with the Waist-to-Hip ratio(n=532,P=1.9×10~(-7),OR=2.4),[among males(n=234,P=1.2×10~(-4),OR=2.0)and females(n=298,P=0.001,OR=6.3)].CONCLUSION:Results confirmed the association of KCNJ11(rs5219),TCF7L2(rs7903146),CDKAL1(rs10946398)and CDKN2A/B(rs10811661)gene variants with susceptibility to T2D among Omani Arabs.     

Association of TCF7L2 mutation and atypical diabetes in a Uruguayan population

AIM To investigate if mutations in TCF7 L2 are associated with "atypical diabetes" in the Uruguayan population.METHODS Healthy, nondiabetic controls(n = 133) and patients with type 2 diabetes(n = 177) were selected from among the presenting population at level-3 referral healthcare centers in Uruguay. Patients with type 2 diabetes were subgrouped according to "atypical diabetes"(n = 92) and "classical diabetes"(n = 85). Genotyping for the rs12255372 and rs7903146 single nucleotide polymorphisms(SNPs) in the TCFTL2 gene was carried out with Taq Man? probes. Random samples were sequenced by Macrogen Ltd.(South Korea). Statistical analysis of the SNP data was carried out with the SNPStats online tool(http://bioinfo.iconcologia.net/SNPstats). The best inheritance model was chosen according to the lowest values of Akaike's information criterion and Bayesian information criterion. Differences between groups were determined by unpaired t-tests after checking the normal distribution or were converted to normalize the data. The association of SNPs was tested for matched case-control samples by using χ2 analysis and calculation of odds ratios(ORs) with 95% confidence intervals(CIs). All statistical tests were performed using SPSS v10.0 and EpiI nfo7 statistical packages. Significant statistical differences were assumed in all cases showing adjusted P 0.05.RESULTS We genotyped two TCF7 L2 SNPs(rs7903146 and rs12255372) in a population-based sample of 310 Uruguayan subjects, including 133 healthy control subjects and 177 clinical diagnosed with type 2 diabetes. For both SNPs analyzed, the best model was the dominant type: rs12255372 = G/G vs G/T+T/T, OR = 0.63, 95%CI: 0.40-0.98, P 0.05 and rs7903146 = C/C vs C/T+T/T, OR = 0.79, 95%CI: 0.41-1.55, P = 0.3. The rs12255372 SNP showed high association with the type 2 diabetes cases(OR = 1.60, 95%CI: 1.20-2.51, P 0.05). However, when the type 2 diabetics group was analyzed according to the atypical and classical subgroupings, the association with diabetes existed only for rs12255372 and the classical subgroup(vs controls: OR = 2.1, 95%CI: 1.21-3.75, P 0.05); no significant differences were found for either SNP or atypical diabetes.CONCLUSION This is the first time SNPs_TCF7 L2 were genotyped in a diabetic population stratified by genotype instead of phenotype. Classical and atypical patients showed statistical differences.     

Vitamin D Receptor Gene Bsm I polymorphism and the susceptibility to prostate cancer in North China Han population

Objective: To study the Bsm I single nucleotide polymorphism (SNP) of vitamin D receptor gene (VDRG) in low-risk Chinese Han population and its relationship to the susceptibility to prostate cancer (PCa). Methods: One hundred and three PCa patients and 106 normal controls from North China Han population were enrolled. Blood samples were obtained and genotyped for Bsm I SNP by denaturing high performance liquid chromatography (DHPLC) methods. Results: There was no significant difference in the distribution of genotype and allele between the PCa patients and the normal controls (P>0.05). The frequencies for the bb, Bb and BB genotypes in PCa patients and normal controls were 92.23%/94.34 %, 7.77 %/5.66 %, and 0/0, respectively. The frequencies for B and b allele were 3.88 % and 96.12 %, and 2.91 % and 97.09 %, respectively. Conclusion: There is no significant relationship between the VDRG polymorphism and PCa in North China Han population. The distribution of VDRG Bsm I SNP varies in different ethnic popul     

c.822＋126T〉G/C：a novel triallelic polymorphism of the TSSK6 gene associated with spermatogenic impairment in a Chinese population

TSSK6 is a member of the testis-specific serine/threonine kinase family. Male Tssk6 knockout mice are infertile owing to sperrnatogenic impairment,including sperm count reduction,a decrease in motile sperm number and motility rates,and an increase in the number of sperms with abnormal morphology. We investigated the possible association between variations oftbe TSSK6 gene and spermatogenic impairment in humans. Mutation screening of TSSK6 was carried out in 519 patients with azoospermia （n = 273） or severe oligozoospermia （n = 246） and in 359 controls with normozoospermia by denaturing high-performance liquid chromatography and DNA sequencing. The frequencies of alleles and genotypes of gene polymorphism were compared between patients and controls. A novel triallelic polymorphism in TSSK6,c.822＋126T〉G/C,was identified. The frequencies of genotype TT and allele T were increased dramatically in infertile patients compared with controls,whereas genotype TG,allele G and allele C frequencies were significantly higher in controls than in patients. Further study revealed that the allele C frequency of controls was remarkably higher than that of patients with oligospermia. Our findings,for the first time,suggested an association of c.822＋I26T〉G/C in TSSK6 with spermatogenic impairment in humans in which allele T may be a risk factor for male infertility,while alleles C and G may decrease susceptibility to male infertility.     

载脂蛋白E基因多态性与胆石病关系的Meta分析

目的 探讨载脂蛋白E(apoE)基因多态性与胆石病的关系.方法 全面检索和筛选相关文献,通过Meta分析的方法对各研究结果进行数据合并,并评价其发表偏倚,运用敏感性分析评价结果的可靠性.结果 检索到相关文献11篇,包括1248例胆石病患者,1660例对照组.Meta分析研究发现,apoE等位基因ε4 以及基因型E3/E4在胆石病患者中的分布频率明显高于对照组.其合并0R值及95%的CJ(可信区间)分别是1.32(1.01～1.71)、1.60(1.04～2.46),P<0.05.发表性偏倚和敏感性分析显示部分存在发表偏倚,但稳定性较好.结论 胆石病与apoE基因的多态性密切相关,等位基因ε4以及基因型E3/E4是胆石病的危险因子.

Abstract：

Objective To evaluate the relationship between apoE gene polymorphisms and gallstone. Methods We included all the published studies on the association between apoE gene polymorphisms and gall-stone. A meta-analysis was employed to summarize all these studies, calculate the pooled OR and its 95% confidence interval (95% CI) , and test the overall effects. The Egger's publication bias analysis and sensitivity analysis were carried out to evaluate the reliability and stability of the meta-analysis. Results Eleven association studies between the apoE gene polymorphisms and gallstone fulfilled our inclusion criteria. There were 1248 patients with gallstones and 1660 controls. Remarkable heterogeneities were discovered in the allele ε4 and genotype E3/E4 of apoE between gallstone and control subjects in these studies (P<0. 05). Their ORs and 95%CIs were 1.32 (1.01, 1. 71), 1. 60 (1. 04, 2. 46), respectively (P<0. 05). The results of sensitivity analysis and publication bias analysis showed the reliability and stability of this meta-analysis. Conclusion apoE gene polymorphisms are associated with gallstone. Those with the alleleε4 or genotype E3 /E4 had a higher risk of suffering from gallstone.     

胃癌患者髓过氧化物酶基因多态性分析

目的 探讨髓过氧化物酶(MPO)基因多态性与胃癌发病的关系.方法 按照病例对照研究的方法,收集62例胃癌患者和61名健康对照者外周血标本,提取DNA进行MPO-463位点基因多态性检测.结果 MPO-463 GG、GA和AA 3种基因型的频率在胃癌组中分别为87.1%、11.3%和1.6%,在对照组中分别为72.1%、23.0%和4.9%;将携带MPO-463 GA和AA型者合并后与携带MPO-463 GG型相比较,患胃癌的风险显著增高(P=-0.039,DR=0.383,95%CI:0.151-0.972).相对于G等位基因,携带A等位基因的个体患胃癌的风险显著降低(P=0.026,OR:0.399,95%CI:0.174～0.916).结论 MPO-463 G/A多态性与胃癌的发生有关,其中A基因是一个保护基因.

Abstract：

Objective To investigate the association of myeloperoxidase (MPO) genetic polymorphism and gastric cancer. Methods A case-control study was performed including 62 patients with gastric cancer and 61 healthy controls. Peripheral blood was collected for genetic analysis of MPO-463. Results There were no significant differences in gender, age, and smoking between the two groups (P>0.05). However, the two groups differed in drinking, family history of gastric cancer, and Helicobacter pylori(HP) infection(P<0.05). The frequencies of MPO-463GG, GA and AA were 87.1%, 11.3% and 1.6%in the study group, and were 72.1% , 23.0% , and 4.9% in the control group, respectively. Carriers of MPO-463 GA or AA had a significantly higher risk of gastric cancer than those of MPO-463 GG (x2=4.253, P<0.05, OR=0.383, 95% CI:0.151-0.972). Carriers of G allele had a significantly lower risk of gastric cancer compared to carriers of A allele (x2=4.935,P<0.05, OR =0.399,95% CI:0.174-0.916). Conclusion MPO-463 G/A polymorphism is associated with gastric cancer with A being a protective gene.     

8q24 rs1447295基因多态性与不同族群前列腺癌易感性的Meta分析

目的通过Meta分析系统评价8q24染色体rs1447295基因多态性与不同族群前列腺癌(prostate cancer,PCa)患病风险的相关性。方法检索万方、中国知网、PubMed、Science Direct、Web of Science、Wiley Online Library和中国生物医学文献数据库中涉及8q24 rs1447295基因多态性和PCa易感性的病例-对照研究。2位独立研究者按标准筛选文献,运用Cochrane工具及Stata 15.0软件行Meta分析,计算OR值、95%CI并进行偏倚风险评价。结果最终纳入相关文献36篇,涉及研究41项,包含25715例PCa患者和27018例健康对照者。结果显示,在5类基因模型中,等位基因模型、显性遗传模型、隐性遗传模型、纯合子遗传模型与杂合子基因模型显示8q24 rs1447295基因多态性均与PCa易感性之间存在显著相关性,差异有统计学意义(P<0.05)。进一步亚组分析显示,在高加索人种和亚洲人种中,8q24 rs1447295基因多态性与PCa易感性相关,且差异均有统计学意义(P<0.05),在非裔和拉美裔群体中未显示有统计学关联。结论8q24染色体rs1447295基因多态性与PCa患病风险有关,该相关性在高加索人种和亚洲人种中较为显著,在非裔和拉美裔群体关联性无显著差异。     

Identification of docetaxel-related biomarkers for prostate cancer

Prostate cancer (PCa) which was the second commonly diagnosed malignancy, contributed to the top fifth carcinoma death in men. Nevertheless, the main chemotherapeutic agent docetaxel came to failure due to chemoresistance. Recently, increasing evidence suggested the importance of tumour microenvironment (TME) in PCa. The present study aimed to explore the specific TME in PCa and find biomarkers related to both immune infiltration and docetaxel. The docetaxel-specific genes and differential expression genes comparing PCa with normal control samples were derived using DESeq2 and zinbwave with GSE140440 , TCGA and GTEx datasets. Immune-infiltration-related genes were identified using CIBERSORT and co-expression network analysis. Key genes related to both docetaxel and immune infiltrating in PCa, including nine genes, namely ZNF486, IFI6, TMOD2, HSPA4L, ITPR1, LRRC37A7P, APOC1, APOBEC3G, and ITGA2, were determined by overlapping above three gene sets. ITGA2 was then defined as the hub gene for its significant prognostic implications. Further validations conducted on Oncomine, GEO, TISIDB, MSigDB, and The Human Protein Atlas confirmed the docetaxel-specific and immune infiltrating characteristics of ITGA2. To sum up, our findings could provide a better understanding of immune infiltrating and docetaxel-resistance in PCa, mostly, ITGA2 could serve as potential prognosis biomarkers and targets for the combination of docetaxel.     

Lack of association between transient receptor potential cation channel 6 polymorphisms and primary membranous glomerulonephritis

Membranous glomerulonephritis (MGN) is one common cause of idiopathic nephrotic syndrome. Transient receptor potential cation channel 6 (TRPC6) has been identified as causing a familial form of progressive focal and segmental glomerulosclerosis. The objective was to clarify the relationship between TRPC6 polymorphisms and MGN. We recruited a cohort of 134 biopsy-diagnosed MGN patients and 265 healthy subjects. Genotyping of TRPC6 polymorphisms was performed using allele-specific polymerase chain reaction methods. We then analyzed associations between TRPC6 gene polymorphisms and clinical manifestations and pathogenesis of MGN. There was no statistically significant difference of TRPC6 gene rs3824935 C/T, rs17096918 C/T, and rs4326755 A/G polymorphisms between controls and patients with MGN. There was no statistical significance of allele frequencies in these two groups. The characteristics of clinical parameters in TRPC6 gene (rs3284935) C/T polymorphism revealed no difference except proteinuria (p < 0.0005) between CC and non-CC genotype in MGN patients. Besides, no apparent statistically significant differences of rs17096918 C/T (TT and non-TT) and rs4326755 A/G (AA and non-AA) polymorphisms between genotypes were found in the clinical parameters. There is no different genotype distribution between normal controls and patients with MGN of TRPC6 gene. The data also show that TRPC6 gene may not be associated with disease clinical course of MGN.     

PDLIM5、SLC22A3和NKX3-1基因与前列腺癌患病风险的关联性研究

目的:探索PDLIM5基因(rs17021918,T)、SLC22A3基因(rs9364554,C)和NKX3-1基因(rs1512268,A)与中国人群前列腺癌(PCa)患病风险的关联。方法:采用病例-对照研究,包括124例PCa患者和138例正常对照者,对PDLIM5基因(rs17021918,T)﹑SLC22A3基因(rs9364554,C)和NKX3-1基因(rs1512268,A)进行两组间的等位基因及基因型差异分析,探讨各基因与患者的BMI、Gleason评分、PSA浓度、肿瘤分期、年龄等临床表型之间的关联。采用MDR方法进行基因-基因交互作用分析。结果:①PDLIM5﹑SLC22A3和NKX3-1基因的风险等位基因和基因型的频率在病例组和对照间组间的分布无显著性差异(P>0.05)。②3个位点与PCa的发病年龄、Gleason评分、PSA浓度以及病理分期等指标均无显著相关性(P>0.05)。③采用MDR方法分析PDLIM5基因、SLC22A3基因和NKX3-1基因的3个多态性位点的交互作用发现PDLIM5基因和NKX3-1基因之间,可能不存在有基因-基因交互作用,树状图分析说明PDLIM5基因与NKX3-1基因可能有协同作用。结论:PDLIM5、SLC22A3和NKX3-1基因可能与中国人群PCa患病风险无关联。而PDLIM5基因和NKX3-1基因之间对PCa患病风险的影响可能有协同作用。     

Association of adiponectin gene polymorphisms with knee osteoarthritis

AIM To investigate the possible relationship of adiponectin(ADIPOQ) gene polymorphisms, plasma adiponectin, and the risk of knee osteoarthritis(OA).METHODS A total of 398 subjects, 202 knee OA patients and 196 healthy individuals, were enrolled in the case-control study. Genotyping at +45T/G(rs2241766) and +276G/T(rs1501299) loci was performed using polymerase chain reaction-restriction fragment length polymorphism. Plasma adiponectin levels were assessed using enzymelinked immunosorbent assay. OA severity was determined using the Kellgren-Lawrence(KL) grading system.RESULTS No significant associations were observed in the genotype distributions and allele frequencies at two loci of +45T/G and +276G/T polymorphisms in the ADIPOQ betweenknee OA patients and control subjects. There was a significant association between genotype distribution of +276G/T polymorphism and KL grade 2, 3 or 4(P = 0.037, P = 0.046, P = 0.016, respectively). At +45T/G locus, the percentage of GG genotype was notably greater in control subjects(13.40%) compared with OA subjects(1.70%)(P = 0.023). Plasma adiponectin was markedly decreased in OA subjects compared with control subjects(P = 0.03). Likewise, circulating adiponectin in OA subjects was notably lesser than that in control subjects in GG genotype of +45T/G(P = 0.029) and +276G/T polymorphisms(P = 0.012).CONCLUSION Polymorphisms +45T/G and +276G/T of the ADIPOQ gene might not be responsible for OA susceptibility among Thais.     

Prostate Cancer (PCa) Risk Variants and Risk of Fatal PCa in the National Cancer Institute Breast and Prostate Cancer Cohort Consortium

Background

Screening and diagnosis of prostate cancer (PCa) is hampered by an inability to predict who has the potential to develop fatal disease and who has indolent cancer. Studies have identified multiple genetic risk loci for PCa incidence, but it is unknown whether they could be used as biomarkers for PCa-specific mortality (PCSM).

Objective

To examine the association of 47 established PCa risk single-nucleotide polymorphisms (SNPs) with PCSM.

Design, setting, and participants

We included 10 487 men who had PCa and 11 024 controls, with a median follow-up of 8.3 yr, during which 1053 PCa deaths occurred.

Outcome measurements and statistical analysis

The main outcome was PCSM. The risk allele was defined as the allele associated with an increased risk for PCa in the literature. We used Cox proportional hazards regression to calculate the hazard ratios of each SNP with time to progression to PCSM after diagnosis. We also used logistic regression to calculate odds ratios for each risk SNP, comparing fatal PCa cases to controls.

Results and limitations

Among the cases, we found that 8 of the 47 SNPs were significantly associated (p < 0.05) with time to PCSM. The risk allele of rs11672691 (intergenic) was associated with an increased risk for PCSM, while 7 SNPs had risk alleles inversely associated (rs13385191 [C2orf43], rs17021918 [PDLIM5], rs10486567 [JAZF1], rs6465657 [LMTK2], rs7127900 (intergenic), rs2735839 [KLK3], rs10993994 [MSMB], rs13385191 [C2orf43]). In the case-control analysis, 22 SNPs were associated (p < 0.05) with the risk of fatal PCa, but most did not differentiate between fatal and nonfatal PCa. Rs11672691 and rs10993994 were associated with both fatal and nonfatal PCa, while rs6465657, rs7127900, rs2735839, and rs13385191 were associated with nonfatal PCa only.

Conclusions

Eight established risk loci were associated with progression to PCSM after diagnosis. Twenty-two SNPs were associated with fatal PCa incidence, but most did not differentiate between fatal and nonfatal PCa. The relatively small magnitudes of the associations do not translate well into risk prediction, but these findings merit further follow-up, because they may yield important clues about the complex biology of fatal PCa.

Patient summary

In this report, we assessed whether established PCa risk variants could predict PCSM. We found eight risk variants associated with PCSM: One predicted an increased risk of PCSM, while seven were associated with decreased risk. Larger studies that focus on fatal PCa are needed to identify more markers that could aid prediction.     

东北汉族人群中IRF6基因单核苷酸多态性与非综合征唇腭裂的相关性研究

目的探讨干扰素调节因子6基因rs2235371,rs2013162位点单核酸多态性与中国东北部人群的非综合征唇腭裂的相关l生。方法收集东北地区非综合征唇腭裂患儿165例,患者父亲109例,患者母亲118例,核心家系101例,对照组164例。采用聚合酶连一限制性片段长度多态性方法检测基因多态位点的基因型,进行病例对照和传递不平衡（TDT）分析。结果病例对照研究结果显示,单纯唇裂和唇腭裂rs2235371位点的GG基因型频率存在显著差异（P〈0．05）,而在单纯腭裂组比较,差异无统计学意义（P=0．11）。采用传递不平衡分析研究发现,干扰素调节因子6基因rs2235371位点的G等位基因在唇腭裂患者中存在过度传递（P〈0．05）,而在腭裂组没有统计学意义。rs2013162位点基因型无明显统计学意义。但c等位基因在单纯唇裂组与唇腭裂都存在过度传递。rs2235371与rs2013162位点的FBAT分析中未见统计学意义。结论干扰素调节因子6基因rs2235371位点G等位基因与东北人群的非综合征唇腭裂存在相关性。