VEGF基因多态性与子宫内膜异位症发病风险的相关性研究

目的探讨血管内皮生长因子（vascular endothelial growth factor,VEGF）-460C/T、-1154G/A、-2578C/A和＋936C/T单核苷酸多态性与子宫内膜异位症的关系。方法采用PCR-RFLP方法检测344例子宫内膜异位症患者（病例组）和360名对照妇女（对照组）的VEGF基因多态性位点的基因型频率分布情况。结果VEGF-460C/T和＋936C/T多态的基因型和等位基因频率分布在病例组与对照组间差异均无统计学意义（P〉0.05）。在病例组和对照组中,VEGF-1154G/A和VEGF-2578C/A多态的基因型及等位基因频率分布差异均有统计学意义（P〈0.05）;与GA＋AA/AA＋CA基因型相比,携带GG/CC基因型明显增加内异症的发病风险（OR=1.43,95%CI：1.05～1.96）/（OR=1.47,95%CI：1.09～2.00）。VEGF-460C/T、-1154G/A、-2578C/A多态的单倍型频率在病例组和对照组间差异有统计学意义（P=0.000）。结论1.携带VEGF-1154GG和-2578CC基因型显著增加子宫内膜异位症的发病风险;2.单倍型VEGF-460/-1154/-2578TGC,CAA,TAA和TAC与子宫内膜异位症的发病明显相关。     

维生素D受体基因多态性与维生素D缺乏性佝偻病遗传关联性Meta分析

目的评价维生素D受体（VDR）基因多态性与维生素D缺乏性佝偻病（佝偻病）的遗传关联性。方法制定原始文献的纳入标准及检索策略,检索PubMed、Springer、Science Direct、Web of Science、中国期刊全文数据库、维普中文科技期刊数据库和万方数据库,收集VDR基因FokⅠ、ApaⅠ、BsmⅠ和TaqⅠ位点多态性与佝偻病相关性的病例对照研究,以佝偻病患儿为病例组。依据NHI-NHGRI研究工作组2007年制定的遗传关联性研究报告规范为基础,并依据相关文献选取其中的14条标准用于评价文献偏倚。以基因型频率为指标,提取数据后先确定最佳遗传模型,采用Stata 11.0软件进行Meta分析,计算合并的OR值及其95%CI。结果 19篇病例对照研究进入Meta分析。①FokⅠ位点采用共显性模型（FF基因型vsff基因型;FF基因型vsFf基因型）分析,病例组704例,对照组596例。Meta分析结果显示,亚洲人群FF基因型较ff基因型（OR=4.59,95%CI：2.98~7.07）和Ff基因型（OR=2.58,95%CI：1.79~3.73）患佝偻病的风险显著增加;高加索人群FokⅠ位点与佝偻病无显著关联性（FF基因型vsff基因型,OR=2.50,95%CI：0.76~8.19;FF基因型vsFf基因型,OR=1.18,95%CI：0.66~2.10）;非洲人群FF基因型较ff基因型患佝偻病的风险显著增加（OR=5.81,95%CI：1.21~27.98）。②ApaⅠ位点采用显性模型（AA＋Aa基因型vsaa基因型）分析,病例组338例,对照组459例。亚洲人群和非洲人群ApaⅠ位点与佝偻病均无显著关联性,OR分别为1.04（95%CI：0.72~1.49）和0.98（95%CI：0.57~1.71）;高加索人群AA＋Aa基因型患佝偻病的风险增高（OR=5.50,95%CI：1.22~24.75）。③BsmⅠ位点采用显性模型（bb基因型vsBb＋BB基因型）分析,病例组822例,对照组736例。亚洲人群BsmⅠ位点bb基因型较Bb＋BB基因型患佝偻病的风险降低（OR=0.46,95%CI：0.23~0.92）,非洲人群BsmⅠ位点与佝偻病无显著关联性（OR=1.65,95%CI：0.95~2.88）。④TaqⅠ位点采用隐性模型（TT基因型vsTt＋tt基因型）分析,病例组519例,对照组513例。亚洲人群（OR=1.22,95%CI：0.82~1.82）、高加索人群（OR=0.91,95%CI：0.35~2.35）和非洲人群（OR=1.18,95%CI：0.68~2.05）TaqⅠ位点与佝偻病无显著关联性。结论现有证据表明,亚洲人群FokⅠ位点FF基因型为患佝偻病的危险因素,而BsmⅠ位点bb基因型为佝偻病轻微的保护因素,尚不能认为ApaⅠ和TaqⅠ位点与佝偻病有关联性;由于高加索人群和非洲人群研究较少,VDR基因多态性与佝偻病的关联性尚不明确。     

高分辨率融解曲线技术检测冠心病患者IL-1β和IL-1Ra基因多态性

目的为探讨白细胞介素1β(IL-1β)和白细胞介素1受体拮抗剂(IL-1Ra)基因单核苷酸多态性(SNP)与冠心病(CHD)易感及其血清学指标的相关性,应用高分辨率融解曲线分析(HRM)技术建立IL-1β和IL-1Ra基因SNP的分子诊断方法。方法建立IL-1B-511CT、IL-1B-31CT、IL-1B+3954CT和IL-1RN TC这4个SNP位点的PCR-HRM检测方法,对260例CHD患者和274例健康对照进行比较研究,分析其与CHD易感及血清学指标的关系。结果上述4个SNP位点未发现与CHD易感有统计学差异,性别分层后发现男性IL-1B-31CT位点和女性IL-1B+3954CT位点的等位基因频率,在病例组和对照组间存在差异;单倍型分析发现IL-1B-511T/IL-1B-31C/IL-1B+3954C/IL-1RN T(TCCT)单倍型增加CHD发病风险(OR=1.217,95%CI:0.950~1.559,P=0.123),CTCC和TTCT单倍型降低CHD发病风险(OR=0.612,95%CI:0.376~0.994,P=0.046;OR=0.365,95%CI:0.154~0.862,P=0.017);病例组血清学指标的相关性分析未发现其与SNP位点之间有关联性。结论应用HRM技术建立的4个SNP位点PCR-HRM检测方法经测序验证和临床标本检测均能正确基因分型,实现了快速基因分型的均相检测。IL-1B-31CT、IL-1B+3954CT位点和单倍型CTCC和TTCT与中国兰州地区汉族人群CHD易感性有关。     

PTPN11第3内含子基因多态性及H.pylori感染与广西柳州地区胃癌易感性研究

目的探讨蛋白酪氨酸磷酸酶非受体型11（PTPN11）基因多态性及幽门螺杆菌（H.pylori）感染与广西柳州地区胃癌易感性的相关性。方法通过PCR检测H.pylori的尿素酶B亚单位（UreB）基因和两步法聚合酶链反应（PCR-CTPP）对广西柳州地区238例胃癌患者及112例健康对照者的PTPN11基因第3内含子2460位点进行单链构象多态性分析（SNP）。结果胃癌组和对照组H.pylori（＋）者分别为142例（59.7%）和54例（48.2%）,H.pylori（-）者分别为96例（40.3%）和58例（51.8%）,H.pylori感染率在两组间差异有统计学意义（P〈0.05）。胃癌组和对照组PTPN11基因在该位点的基因型频率分布符合遗传平衡状态且差异无统计学意义（P〉0.05）,但两组间的等位基因分布差异有统计学意义（P〈0.05）。与G/G型相比,G/A型和A/A型不能减低胃癌的发病风险（G/A型：OR=0.642,95%CI：0.397～1.039;A/A型：OR=0.399,95%CI：0.097～1.641）;但将G/A型和A/A型合并后与G/G型相比,带有A基因的个体患胃癌的风险显著降低（OR=0.620,95%CI：0.388～0.992）。根据发病年龄、性别、吸烟史、饮酒史和H.pylori感染对胃癌的易感性进行的分层分析发现,PTPN11基因该位点SNP与胃癌的年龄、性别、吸烟史以及饮酒史无关,H.pylori阳性的A基因携带者相对于G/G型个体患胃癌的风险减少到0.52倍（OR=0.521,95%CI：0.274～0.990）。结论广西柳州地区PTPN11基因第3内含子2460位点A基因携带者能明显降低胃癌的发病风险,H.pylori感染与该位点G/G基因型之间存在交互作用。     

GATA5基因启动子序列单核苷酸多态性可增加急性心肌梗死的易感性

目的:通过病例-对照研究,探讨GATA结合蛋白5(GATA binding protein 5,GATA5)基因启动子序列单核苷酸多态性(single nucleotide polymorphism,SNP)与急性心肌梗死(acute myocardial infarction,AMI)的相关性。方法:通过χ~2检验、logistic回归、单倍型分析、细胞转染及电泳迁移率变动分析(electrophoretic mobility shift assay,EMSA)对SNPs进行遗传及功能分析。结果:校正混杂因素后,rs80197101位点GA和GA+AA基因型与AMI显著相关(OR=2.280,95%CI:1.027~5.061,P=0.043;OR=2.312,95%CI:1.045~5.116,P=0.039)。rs77067995位点CT和CT+TT基因型也与AMI显著相关(OR=2.280,95%CI:1.027~5.061,P=0.043;OR=2.312,95%CI:1.045~5.116,P=0.039)。rs80197101和rs77067995呈完美连锁不平衡,两者形成的单倍型AT在AMI组的频率显著高于对照组(χ~2=6.960,P=0.008)。EMSA及转染结果表明,这些SNPs通过影响转录因子与GATA5基因启动子的结合,显著增加GATA5基因启动子在HEK-293细胞和H9c2细胞中的转录活性(P<0.001)。结论:GATA5基因启动子序列中的rs80197101与rs77067995可显著增加AMI的易感性。rs80197101的等位基因A和rs77067995的等位基因T可能是AMI的危险等位基因,单倍型AT可能是AMI的危险单倍型。     

5，10-亚甲基四氢叶酸还原酶基因C677T多态性与先天性心脏病关系的Meta分析

目的对5,10-亚甲基四氢叶酸还原酶（MTHFR）基因C677T多态性与先天性心脏病（CHD）的相关性研究进行Meta分析。方法制定原始文献的纳入标准及检索策略,检索PubMed、EMBASE、Ovid、Springer、中国期刊全文数据库、维普中文科技期刊数据库、万方数据库和中国生物医学文献数据库（1994年1月至2009年1月）中的文献,收集MTHFR基因C677T多态性与CHD相关性的病例一对照研究,剔除不符合要求的文献,应用RevMan4．2软件进行Meta分析,得出合并后的OR值及其95％CI。结果共18篇文献符合纳入标准进入Meta分析。数据合并结果显示,子代MTHFR基因677位点TT／CC和（TT＋CT）／CC与CHD易感性有统计学意义,OR值（95％CI）分别为1．55（1．24～1．93）和1．23（1．06～1．42）,P〈0．05;子代MTHFR基因677位点CT／CC与CHD易感性无统计学意义,OR值（95％CI）为1．15（0．99—1．34）,P〉0．05。父亲MTHFR基因677位点TT／CC和（TT＋CT）／CC与子代CHD的易感性有统计学意义,OR值（95％CI）分别为1．84（1．23～2．74）和1．33（1．04～1．71）,P〈0．05;父亲MTHFR基因677位点CT／CC与子代CHD易感性无统计学意义,OR值（95％CI）为1．25（0．96～1．62）,P〉0．05。母亲MTHFR基因677位点TWCC、CT／CC和（TT＋CT）／CC与子代CHD易感性均无统计学意义,OR值（95％CI）分别为1．20（0．92-1．56）、1．03（0．86～1．24）和1．07（0．90—1．27）,P均〉0．05。传递不平衡分析未发现在CHD核心家系的MTHFR基因677位点存在突变的传递不平衡现象,OR值为0．90（95％CI：0．79～1．12）,P〉0．05。结论子代MTHFR基因677位点TT和TT＋CT为CHD的危险因素之一;父亲MTHFR基因677位点TT和TT＋CT是子代CHD的危险因素之一;母亲MTHFR基因677位点多态性与子代CHD的发生无关。     

RTKN2、LDLR、APOB和APOC1基因多态性与类风湿性关节炎的相关性

目的：建立RTKN2基因rs3125734 C＞T、LDLR基因rs688 C＞T、APOB基因rs693 C＞T和APOC1基因rs4420638 A＞G四个SNP位点的PCR-HRM分子诊断方法,并研究其与兰州地区汉族人群类风湿关节炎易感的相关性。方法：通过设计引物和PCR-HRM检测体系优化,建立四个SNP位点的基因分型方法。检测588例RA患者和200例健康对照者标本,通过病例对照研究分析其RA易感性。结果：经测序验证所建PCR-HRM检测方法的正确性。结果显示,rs3125734和rs688位点的基因型和等位基因频率在RA组和对照组间存在统计学差异（P分别为0.046和0.016、0.014和0.02）,rs3125734杂合突变型CT在RA组与对照组间差异有统计学意义（χ2=4.013,P=0.045,OR=1.613,95% CI:1.010-2.576）,rs688纯合突变型TT在两组间有显著差异（χ2=6.853,P=0.009,OR=0.273,95% CI:0.103-0.721）。rs693和rs4420638位点基因型和等位基因频率在RA组和对照组间差异无统计学意义（P＞0.05）。经RF和anti-CCP将RA组分层后,rs4420638位点基因型和等位基因频率在RF(-)RA组与对照组间有统计学差异（χ2=4.710,P=0.030;χ2=4.110,P=0.043）,其杂合突变型AG在两组间存在显著差异（χ2=4.046,P=0.044,OR=1.799,95%CI：1.015-3.186）;rs693在各组间无显著差异（P＞0.05）。构建rs688和rs4420638单倍型,单倍型CA和TA在RA组和对照组间有显著差异(P=0.020,OR=1.408,95%CI：1.054-1.881;P=5.73×10-5,OR=0.443,95%CI：0.295-0.664)。 结论：建立的rs3125734、rs688、rs693和rs4420638位点PCR-HRM分子诊断方法可用于常规化检测。rs3125734、rs688和rs4420638位点是兰州地区汉族人群的RA易感基因,rs3125734位点CT基因型和rs4420638位点AG基因型是RA发病的危险因素,而rs688位点TT基因型是RA的保护性因素。rs688和rs4420638的单倍型CA可显著增加RA的发病风险,TA可降低RA的发病风险。     

VEGF基因单核苷酸多态性与中国北方汉族人SLE易感性的相关性研究

目的:研究血管内皮生长因子(VEGF)基因单核苷酸多态性(SNP)与中国北方汉族人系统性红斑狼疮(SLE)易感性的相关性。方法:应用Sequenom飞行时间质谱技术检测44例SLE患者和100例正常对照者外周血VEGF基因的SNPs,选择6个VEGF基因的SNP位点:rs2010963、rs3024994、rs3025000、rs3025010、rs3025035和rs833070进行基因分型,用SPSS 11.5软件对数据资料进行统计分析。结果:SLE患者VEGF多态性位点rs2010963、rs3024994、rs3025000、rs3025010、rs3025035的基因型频率及等位基因频率与正常对照组比较差异无统计学意义(P0.05);VEGFrs833070 A等位基因频率明显高于对照组(31.2%vs20%,χ2=4.547,P=0.033,OR=1.818,95%CI 1.045-3.162)。rs833070 G等位基因在SLE组中关节炎与无关节炎组中频率有显著差异(56%vs80.4%,χ2=5.613,P=0.018,OR=0.336,95%CI 0.134-0.843),rs833070 GG基因型频率明显低于无关节炎组(GGvsAG+AA:28%vs65.2%,χ2=6.684,P=0.010,OR=0.207,95%CI 0.061-0.705),而VEGF rs833070位点基因型、等位基因型的频率与患者血清中ds-DNA抗体、抗Sm抗体、狼疮性肾炎、间质性肺疾病的发生无相关性(P0.05)。结论:VEGF基因SNP点rs833070与北方汉族人SLE发病易感性相关,rs833070位点A等位基因可能增加了SLE患病的易感性,而rs833070 GG基因型及G等位基因型可能是SLE合伴关节炎的保护性基因。     

环磷酰胺治疗增殖性狼疮性肾炎的Meta分析

目的评价环磷酰胺（CTX）治疗增殖性狼疮性肾炎（PLN）的疗效和安全性。方法检索Cochrane图书馆、PubMed、EMBASE、中国生物医学文献数据库、中国期刊全文数据库、维普数据库,检索时间均从建库至2010年11月30日,获得CTX治疗PLN的相关RCT文献。由3名系统评价员进行资料提取和文献偏倚评价。依据随机方法、分配隐藏、盲法、结果数据的完整性、选择性报告研究结果和其他偏倚来源进行文献偏倚评价。计数资料采用OR值及其95%CI表示;计量资料采用加权均数差（WMD）或标准化均数差（SMD）及其95%CI表示。对同质资料采用RevMan5.0软件进行Meta分析。结果共检索到符合条件的文献1253篇,符合纳入标准的37篇RCT文献（n=2296）进入Meta分析。19篇文献采用了正确的随机化方法,6篇文献采用了分配隐藏,4篇文献采用盲法,纳入文献均未提及是否选择性报道结果,均未报告其他偏倚来源。Meta分析结果显示：①大剂量CTX组病死率（OR=0.24,95%CI：0.06～0.89）及SCr倍增发生率（OR=0.38,95%CI：0.15～0.96）显著低于小剂量CTX组。②CTX/糖皮质激素联合治疗组终末期肾病（ESRD）（OR=0.56,95%CI：0.31～1.00）、SCr倍增发生率（OR=0.46,95%CI：0.26～0.81）及复发率（OR=0.18,95%CI：0.04～0.82）显著低于单用糖皮质激素组;肾功能稳定（OR=1.94,95%CI：1.15～3.28）、带状疱疹（OR=2.63,95%CI：1.21～5.74）及闭经（OR=3.74,95%CI：1.85～7.57）发生率显著高于单用糖皮质激素组。③CTX组带状疱疹（OR=3.92,95%CI：1.20～12.86）及闭经（OR=4.04,95%CI：1.66～9.82）发生率显著高于硫唑嘌呤组。④CTX/糖皮质激素联合治疗组完全缓解率（OR=0.46,95%CI：0.28～0.76）及总缓解率（OR=0.66,95%CI：0.48～0.91）显著低于霉酚酸酯/糖皮质激素联合治疗组,闭经（OR=6.13,95%CI：1.98～18.94）及WBC减少（OR=2.30,95%CI：1.41～3.76）发生率显著高于霉酚酸酯/糖皮质激素联合治疗组。⑤CTX/硫唑嘌呤联合治疗组闭经（OR=4.92,95%CI：1.63～14.88）及WBC减少（OR=8.64,95%CI：1.92～38.96）发生率显著高于霉酚酸酯组。⑥CTX/糖皮质激素联合治疗较环孢素/糖皮质激素联合治疗,可显著提高24h尿蛋白定量（MD=0.26,95%CI：0.11～0.41）、50%补体溶血单位（MD=6.20,95%CI：5.17～7.23）、C3（MD=16.12,95%CI：13.38～18.87）及CCr（MD=12.04,95%CI：5.04～19.04）水平;可显著降低抗双链DNA抗体水平（MD=-2.20,95%CI：-2.86～-1.55）、生长速度（MD=-5.50,95%CI：-6.07～-4.93）及生长速度标准差（MD=-1.00,95%CI：-1.24～-0.76）。结论 CTX/糖皮质激素联合治疗PLN的疗效要优于单用糖皮质激素,不良反应发生率高于单用糖皮质激素;CTX/糖皮质激素联合治疗PLN的疗效及保护肾功能不如霉酚酸酯/糖皮质激素联合治疗,不良反应发生率高于霉酚酸酯/糖皮质激素联合治疗;CTX/硫唑嘌呤联合治疗PLN的疗效与霉酚酸酯相似,不良反应发生率高于霉酚酸酯;CTX治疗PLN的疗效与硫唑嘌呤相似,不良反应发生率高于硫唑嘌呤;CTX应选择合适的治疗剂量及最短的治疗时间来减少其不良反应。     

血管内皮生长因子基因多态性与克罗恩病的相关性CSCD

目的探讨血管内皮生长因子（vascular endothelial growth factor,VEGF）基因多态性与克罗恩病（Crohn’S disease,CD）易感性的关系。方法收集275例CD患者和495名性别、年龄相匹配的健康对照者,采用SNaPshot技术检测VEGF基因rs699947和rs3025039位点的等位基因和基因型频率。结果CD组与对照组之间整体比较,VEGF基因rs699947和rs3025039位点的变异等位基因和基因型频率差异无统计学意义（P均〉o．05）。分层分析发现,结肠型CD患者中rs699947的变异等位基因（A）和基因型（CA＋AA）频率显著高于对照组（P=0．006,95％CI：1．143～2．234;P=0．005,95％CI：1．203～2．900）。与对照组相比,回肠受累（回肠末段型＋回结肠型）的CD患者中,rs699947的变异等位基因（A）和基因型（CA4-AA）频率偏低（P=0．033,95％CI：0．524～0．974;P=0．043,95％CI：0．481～0．989）。此外,非狭窄非穿透型CD患者中rs3025039纯合子变异基因型（TT）频率低于对照组（0．62％vs．4．85％,P=0．036,95％CI：0．016～O．870）。结论VEGF基因rs699947位点基因变异可能增加结肠型CD的发病风险,但在回肠受累的CD患者中可能发挥保护作用。VEGF基因rs3025039位点的纯合子变异基因型（TT）携带者中非狭窄非穿透型CD的发病风险可能降低。     

Association between VEGF polymorphisms (936c/t, -460t/c and -634g/c) with haplotypes and coronary heart disease susceptibility

Aim: Our aim was to investigate the association between single nucleotide polymorphisms (SNPs) of vascular endothelial growth factor (VEGF) and coronary heart disease (CHD) susceptibility in Chinese Han population. Methods: 144 CHD patients and 150 healthy individuals were enrolled in the study. Three SNPs (936C/T, -460T/C and -634G/C) of VEGF were chose and then were genotyped with Sequenom time-of-flight mass spectrometry (TOFMS). Odds ratio (OR) with 95% confidence interval (CI) were used to evaluate the association of genotypes and haplotypes and CHD susceptibility. Results: The frequencies of -460T/C CC genotype (13.6%) was found higher in the case group than that of control group (6.7%), which indicated that CC genotype was a risk factor for CHD (OR=2.50, 95% CI=1.10-5.68). Correspondently, the C allele appeared to increase the risk of CHD (OR=1.54, 95% CI=1.07-2.22). For -634G/C polymorphism, the risk of the CC genotype carrier for CHD increased 2.24 fold compared to the wild genotype. Moreover, -634G/CC allele was significantly associated with CHD susceptibility (OR=1.65, 95% CI=1.15-2.36). In addition, +936C/T CT genotype and C allele appeared to be a genetic-susceptibility factors for CHD (OR=2.43, 95% CI=1.44-4.10; OR=1.95, 95% CI=1.26-3.02). The haplotype analysis showed that T-C-T, C-C-C and C-G-C haplotypes all could increase the risk for CHD (OR: 2.43, 2.77 and 2.33). Conclusion: we concluded VEGF polymorphisms were associated with CHD susceptibility. Moreover, the haplotypes of T-C-T, C-C-C and C-G-C all could increase the risk for CHD.     

Klotho gene polymorphisms are related to colorectal cancer susceptibility

Aim: The purpose of this study was to investigate the relationship of Klotho gene G-395A and C1818T polymorphisms with colorectal cancer (CRC) susceptibility. Methods: 125 CRC patients and 125 controls were enrolled in the study. G-395A and C1818T polymorphisms were genotyped with polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) technology. Haploview software was utilized to conduct linkage disequilibrium and haplotype analysis. Odds ratio (OR) and 95% confidence interval (95% CI) were used to analyze the correlation of genotypes and haplotypes with CRC susceptibility. Results: AA and GA genotypes of G-395A polymorphisms were related with CRC risk (AA: OR = 4.161, 95% CI = 1.437-12.053; GA: OR = 1.958, 95% CI = 1.133-3.385). The frequency of A allele was much higher in case group, compared with controls (31.2% vs.17.6%) and the value of OR AND 95% CI suggested that A allele served as a risk factor for CRC (OR = 2.123, 95% CI = 1.393-3.236). Haplotypes analysis indicated that A-C and A-T haplotypes were significantly associated with risk of CRC (OR = 1.822, 95% CI = 1.124-2.954; OR = 2.877, 95% CI = 1.340-6.176). Conclusion: G-395A polymorphism of Klotho gene could increase the risk of CRC.     

血清脂蛋白(a)水平及LPA基因SNPrs3798220与冠心病的相关性研究

目的 研究血清脂蛋白（a）[Lp（a）]水平及人载脂蛋白a基因SNP rs3798220（LPA SNP rs3798220）与冠心病的相关性.方法 以200例冠脉造影证实为冠心病的患者为冠心病组,以200名健康者为对照组,采用高分辨熔解曲线分析方法（HRM）分析LPA SNP rs3798220与冠心病的相关性,并测定Lp（a）水平.结果 冠心病组T/C＋C/C型频率、C等位基因频率均高于对照组（P＜0.05）.Logistic回归分析发现,LPA SNP rs3798220 T/C＋ C/C型与冠心病正相关（OR：2.878,95.0％ CI：1.306～6.339,P＜0.05）,Lp（a）水平与冠心病的发病呈正相关（OR：1.068,95.0％ CI：1.041-1.095,P＜0.05）.结论 载旨蛋白a基因SNP rs3798220 T/C＋C/C型可能是冠心病的易感基因型,血清Lp（a）水平可能是冠心病的一个危险因素.     

Analysis of the SREBF2 gene as a genetic risk factor for vascular dementia.

A case-control study was performed to examine the association between vascular dementia and the polymorphisms of the human gene encoding sterol regulatory element binding protein-2 (SREBF2) that regulates cholesterol metabolism. The 16 genetic variants of SREBF2 were identified in 24 Koreans, and 5 out of 16 variants were genotyped in 207 vascular dementia patients and 207 control subjects. Significant association with vascular dementia was shown in 34995G/T with the GT genotype (odds ratio [OR] = 1.57; 95% CI = 1.04-2.37; P < 0.05) and the GG genotype (OR = 0.65; 95% CI = 0.44-0.96; P < 0.05). The CGC, the most common haplotype combined with three SNPs, 24489C/T, 34995G/T, and 68891C/T, was associated with the disease (OR = 0.72; 95% CI = 0.53-0.97; P < 0.05), and the individuals with the CGC might be less susceptible to vascular dementia than those carrying any haplotype including at least one minor allele. This study implied that the variants of SREBF2 might be genetic factors involved in the pathogenesis of vascular dementia.     

IL-6-174G／C多态性与肺癌无相关性：基于2901例肺癌患者和3234例对照的Meta分析

目的为准确评估IL-6-174G／C多态性与肺癌危险度的关系。我们采用了Meta分析的方法。通过检索Medline、EMBASE、OVID和中国生物医学数据库中至2012年12月为止发表的所有病例对照研究文献,筛选数据,计算合并的OR值和95％可信区间（95％CI）。最终纳人5篇文献,包括病例2901例,对照3234例。meta分析后发现,IL-6-174C等位基因并不能明显升高肺癌危险度（CCvs．GG：OR=1.06,95％CI=0．92-1．23;GCVS．GG：OR=1．05,95％CI=0．83～1．32;CC＋GCVS．GG：OR=1．01,95％CI=1．90-1．13;CCVS．GC＋GG：OR=1．08,95％CI=0．95～1．23）。漏斗图和Egger＇s检验没有发现发表偏倚,肺癌病理学和吸烟状态亚组分析示：IL-6-174G／C多态性与肺癌危险度无明显相关性。尽管存在一些局限,确切评估IL-6-174G／C与肺癌的危险度,有待于今后设计更好,样本量更大的研究。     

VEGF C-634G polymorphism is associated with protection from isolated ventricular septal defect: case-control and TDT studies

The ventricular septal defect (VSD) is the most common congenital heart defect and no candidate susceptibility gene has been identified. Endocardial cushion and outflow septal morphogenesis, malalignment of which induces VSD, have been suggested to be mediated by the vascular endothelial growth factor (VEGF). Three single-nucleotide polymorphism (SNP) variants in promoter and 5'-UTR region of the VEGF gene, C-2578A (rs699947), G-1154A (rs1570360) and G-634C (rs2010963), were reported to alter its expression. We assessed the association in a Chinese population between these SNPs and VSD using a double approach: case-control and TDT designs. Among the three SNPs, only -634C allele was less frequently present in 222 patients compared to 352 controls (odds ratio: 0.76, 95% CI: 0.59-0.97, X(2)=5.06, P=0.024, not significant after a Bonferroni correction). This was significantly less transmitted to VSD patients (trios: 142) (odds ratio: 0.39, 95% CI: 0.25-0.62, X(2)=8.11, df=1, P=0.004, corrected P=0.024). A similar result was observed for haplotype -2578C/-1154G/-634C allele in both studies (in TDT: X(2)=7.51, df=1, P=0.006, corrected P=0.048). All these associations for the first time demonstrated that -634C allele was in a significant protective association against VSD, suggesting that VEGF dysregulation was involved in the pathological processes of VSD.     

男性CHD患者血清脱氢表雄酮、游离睾酮浓度的分析

目的：观察血清雄激素水平与男性 （CHD）的相关性。方法：CHD诊断和狭窄程度判断通过冠状动脉造影检查,冠状动脉至少有一处内径狭窄≥50%为诊断标准;冠状动脉狭窄评分标准：主要冠脉即左主干、左前降支、左回旋支、右冠脉,狭窄程度计分如下：无狭窄为0分,狭窄≤25%为1分,狭窄26%～50%为2分,狭窄51%～75%为3分,狭窄76%～100%为4分。若单支血管有多处病变,则以最狭窄病变的分数作为该支血管狭窄分数;若多支血管有狭窄,则将各支血管狭窄分数相加,即为该患者冠脉病变评分;左主干病变计分加倍。血清雄激素检测脱氢表雄酮和游离睾酮两个指标。脱氢表雄酮和游离睾酮采用酶联免疫吸附试验检测;并同时检测空腹血糖、三酰甘油、总胆固醇、高密度脂蛋白胆固醇、低密度脂蛋白胆固醇、尿酸等生化指标。结果：CHD组血清脱氢表雄酮、游离睾酮水平显著低于无CHD组（P〈0.001）。多元logistic回归分析显示,血清脱氢表雄酮（OR=0.526;95%CI：0.361～0.768;P〈0.01）、游离睾酮（OR=0.995;95%CI：0.991～0.999;P〈0.05）为CHD独立危险因素;血清脱氢表雄酮（t=3.424,P〈0.01,r=-0.415）、游离睾酮（t=2.763,P〈0.01,r=-0.359）与CHD冠状动脉狭窄程度呈负相关。结论：血清雄激素水平的降低可能是导致男性CHD发病率升高的重要因素,监测血清雄激素水平有助于判断CHD病变的程度。     

DNA错配修复基因MSH2和MLH1单核苷酸多态性与食管癌发生风险相关性研究

目的:探讨DNA错配修复基因MSH2和MLH1单核苷酸多态性对于食管癌易感性的潜在作用。方法:采用医院为基础的病例-对照研究方法,应用PCR-RFLP检测包括正常对照132例,食管癌患者169例MSH2c.2063TG和MLH1IVS14-19AG两个基因多态性位点的基因型。通过Logistic回归分析计算出比值比(OR)和95%置信区间(95%CI),估计不同基因型频率分布与食管癌发生风险的关系。结果:MSH2c.2063TG携带突变等位基因个体发生食管癌的风险是非携带者的3.24倍。MLH1IVS14-19AG突变等位基因携带者发生食管癌风险是非携带者的1.58倍。对MSH2和MLH1基因交互作用分析发现两突变基因型携带者发生食管癌风险大大增加并具有显著的统计学意义。结论:DNA错配修复基因MSH2c.2063G突变等位基因和MLH1IVS14-19G突变等位基因可能在促成食管癌发生过程起到一定作用。     

结合珠蛋白基因1/2多态性与中国人冠心病易感性的关联研究

目的 通过分析冠心病患者及冠脉正常组中结合珠蛋白(haptoglobin,HP)基因1/2多态性分布,初步探讨HP基因1/2多态性与冠心病易感性的关系.方法 经冠脉造影确诊冠心病组189例,冠脉正常对照组242名;采用聚合酶链反应-限制性片段长度多态性技术检测所有受试者HP基因型.结果 冠心病组HP基因型分布与对照组相比差异有统计学意义(P=0.002),表现为HP2-2基因型在冠心病组的频率明显高于对照组(0.54vs.0.35,P=0.000),单因素分析显著增加冠心病的风险(OR=2.166,95%CI:1.467～3.196),HP2等位基因的频率也明显高于对照组(0.74 vs.0.61).同时,多因素Logistic回归分析表明HP2-2基因型是冠心病的独立危险因素(P=0.002;OR=2.101,95%CI:1.311～3.367).结论 HP2-2基因型与冠心病的发生相关,可能是冠心病发病的独立危险因子;HP2等位基因可能是中国人冠心病的易感基因.

Abstract：

Objective To assess the association of haptoglobin (HP)1/2 polymorphism with coronary heart disease (CHD) in Chinese Hans. Methods One hundred and eighty-nine CHD patients and 242 healthy controls confirmed with angiography were recruited. Polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) method was utilized to genotype the HP1 and HP2 alleles and genotype frequencies in cases and controls were compared. Results The frequency of HP2-2 genotype was significantly higher in CHDs than in controls (0. 54 vs. 0.35, P=0.000). The HP2-2 genotype significantly increased the risk for CHD in univariable analysis (OR= 2. 165, 95% CI: 1. 467-3. 196). Multifactor Logistic regression analysis indicated that HP2-2 genotype is an independent risk factor to CHD (P=0.002;OR=2. 101, 95% CI: 1. 311-3. 367). Similarly, the HP2 allele frequency in the CHD group was significantly higher than that in the control subjects (0.74 vs. 0. 61, P= 0. 000). Conclusion The HP2-2genotype is associated with CHD in Chinese. HP2-2 genotype may be an independent risk factor to CHD,and HP2 allele may be a genetic susceptibility factor to CHD in Chinese.     

IkappaBalpha promoter polymorphisms in patients with rheumatoid arthritis

To investigate the role of inhibitor of kappaBalpha promoter polymorphisms in the pathogenesis of rheumatoid arthritis (RA), 140 patients with RA and 115 healthy controls were enrolled in this study. The IkappaBalpha promoter polymorphisms were determined using the polymerase chain reaction/restriction fragment length polymorphisms method. In comparison with IkappaBalpha-826 C/C, the genotype frequency of IkappaBalpha-826 C/T was significantly higher in the patients with RA than that of the controls (P = 0.009, OR = 2.0, 95% CI = 1.2-3.4). The allele frequency of IkappaBalpha-826 T was also significantly increased in patients with RA when compared with that of the controls (P = 0.027, OR = 1.6, 95% CI = 1.1-2.4). In comparison with IkappaBalpha-550 A/A, the genotype frequency of IkappaBalpha-550 A/T was significantly decreased in patients with RA when compared with that of the controls (P = 0.02, OR = 0.2, 95% CI = 0.06-0.8). The allele frequency of IkappaBalpha-550 A was significantly increased in patients with RA (P = 0.007, OR = 5.1, 95% = 1.4-18.2). This study also revealed that the IkappaBalpha-826 T -550 A -519 C haplotype was significantly increased in patients with RA in comparison to that of controls (P = 0.01, OR = 1.8, 95% CI = 1.1-2.8). The IkappaBalpha-826 T and -550 A alleles are associated with susceptibility to RA. Moreover, the IkappaBalpha-826 T -550 A -519 C haplotype is associated with susceptibility to RA in Taiwan.