叶酸摄入与胰腺癌发生风险的meta分析

目的探讨叶酸摄入与胰腺癌发生风险的关系。方法计算机检索Cochrane图书馆、Pubmed、Embase、CBM-disc、CNKI数据库,手工检索相关文献,纳入关于叶酸与胰腺癌发生关系的前瞻性及病例-对照研究。评价质量及提取资料后,采用Stata version 11.0软件对胰腺癌发生风险进行合并。结果共纳入6项队列研究及3项病例-对照研究,2 209例患者。分析提示:从食物中获取叶酸的最高摄入量人群与最低者相比,前组胰腺癌罹患风险统计学上明显降低28%,在以相对危险度(RR)为效应值的队列研究中这种降低趋势更明显[合并RR=0.51,95%CI(0.29,0.89),P=0.017],在病例-对照研究中,合并优势比(OR)=0.79[95%CI(0.66,0.94),P=0.008];总叶酸摄入量(来源于食物及补充的叶酸)最高组人群与最低者相比,胰腺癌罹患风险统计学上明显降低33%,在病例-对照研究中,合并OR=0.53[95%CI(0.30,0.96),P=0.036]。结论本研究结果表明增加总叶酸摄入量(来源于食物及补充的叶酸)及食物来源叶酸摄入量是胰腺的保护因素。     

A prospective study of folate intake and the risk of breast cancer

CONTEXT: Folate is involved in DNA synthesis and methylation and may reduce breast cancer risk, particularly among women with greater alcohol consumption. OBJECTIVES: To assess the association between folate intake and risk of breast cancer and whether higher folate intake may reduce excess risk among women who consume alcohol. DESIGN: Prospective cohort study performed in 1980, with 16 years of follow-up. SETTING AND PARTICIPANTS: A total of 88818 women who completed the dietary questionnaire section of the Nurses' Health Study in 1980. MAIN OUTCOME MEASURE: Incidence of invasive breast cancer by levels of folate and alcohol intake. RESULTS: A total of 3483 cases of breast cancer were documented. Total folate intake was not associated with overall risk of breast cancer. However, among women who consumed at least 15 g/d of alcohol, the risk of breast cancer was highest among those with low folate intake. For total folate intake of at least 600 microg/d compared with 150 to 299 microg/d, the multivariate relative risk (RR) was 0.55 (95% confidence interval [CI], 0.39-0.76; P for trend = .001). This association was only slightly attenuated after additional adjustment for intake of beta carotene, lutein/zeaxanthin, preformed vitamin A, and total vitamins C and E. The risk of breast cancer associated with alcohol intake was strongest among women with total folate intake of less than 300 microg/d (for alcohol intake > or =15 g/d vs <15 g/d, multivariate RR, 1.32; 95% CI, 1.15-1.50). For women who consumed at least 300 microg/d of total folate, the multivariate RR for intake of at least 15 g/d of alcohol vs less than 15 g/d was 1.05 (95% CI, 0.92-1.20). Current use of multivitamin supplements, the major source of folate, was associated with lower breast cancer risk among women who consumed at least 15 g/d of alcohol (for current users of supplements vs never users, RR, 0.74; 95% CI, 0.59-0.93). CONCLUSIONS: Our findings suggest that the excess risk of breast cancer associated with alcohol consumption may be reduced by adequate folate intake.     

亚甲基四氢叶酸还原酶基因遗传变异与肺癌

目的探讨亚甲基四氢叶酸还原酶(MTHFR)基因多态与肺癌风险的关系.方法以聚合酶链反应和限制性片段长度多态性分析方法检测505例肺癌患者和500名正常对照者MTHFR C677T和A1298C基因型;用EH软件构建了这两个多态的单体型;以比值比(OR)及其95%可信区间(CI)比较不同基因型的肺癌相对风险度.结果C677T突变等位基因频率在肺癌患者和正常对照者中的分布差异具有显著性(53.5%vs44.9%,P＜0.001).与MTHFR 677CC基因型比较,677CT和TF基因型患肺癌的风险分别增加1.43(95%CI,1.04～1.95)和2.40(95%CI,1.61～3.59)倍.MTHFR基因677T-1298A单体型频率在病例组和对照组中分布差异具有显著性(P＜0.05).未发现MTHFR A1298C基因多态与肺癌风险相关.结论MTHFR基因变异可增加患肺癌的风险.     

非小细胞肺癌患者血清叶酸、同型半胱氨酸和维生素B12的检测及其临床意义

目的:检测非小细胞肺癌(NSCLC)患者血清中叶酸、同型半胱氨酸(Hcy)和维生素B₁₂水平,阐明叶酸、Hcy和维生素B₁₂水平用于NSCLC诊断及预后评估的临床意义。方法:选取35例NSCLC患者作为NSCLC组,另选30名健康体检者作为对照组,排除高血压、贫血和家族病史等相关影响因素,采用循环酶法和电化学发光法检测2组受试者血清叶酸、Hcy及维生素B₁₂水平。采用Pearson检验分析2组受试者血清中叶酸、Hcy及维生素B₁₂水平的相关性。结果:NSCLC组患者Hcy水平明显高于对照组(P<0.01);NSCLC组患者叶酸水平明显低于对照组(P<0.01);而2组间维生素B₁₂水平比较差异无统计学意义(P>0.05)。Pearson相关分析,NSCLC组患者血清Hcy水平与叶酸水平呈负相关关系(r=-0.505,P=0.002),与维生素B₁₂水平无关联(r =-0.084,P=0.633),叶酸水平与维生素B₁₂水平无关联(r=-0.039,P=0.826)。结论:NSCLC患者血清Hcy水平显著升高,其对NSCLC患者诊断及评估预后有预测价值。     

MBL2基因P57位点多态性与结核易感性关系的Meta分析

目的系统评价甘露糖结合凝集素2(mannose-binding lectin 2,MBL2)基因P57位点多态性与结核易感性的相关性。方法检索Pub Med、CNKI、Wan Fang Data、CBM、EMbase、VIP等数据库,检索时限为建库至2016年6月20日。查找所有研究MBL2基因P57位点多态性与结核易感性关系的相关文献,采用Rev Man 5.3软件进行Meta分析。结果共纳入8篇英文文献,均为病例对照研究,结核组共1 375例,对照组共1 465例。经异质性检验,各研究之间不存在统计学异质性(P≥0.1),故总体分析采用固定效应模型。Meta分析结果显示:在总体人群中,MBL2基因P57位点与结核易感性关联无统计学意义(CC+AC vs AA:OR=0.84,95%CI:0.68~1.04,P0.05)。亚组分析结果显示:在亚洲人群中,MBL2基因P57位点多态性与结核易感性关联无统计学意义(CC+AC vs AA:OR=1.46,95%CI:0.82~2.60,P0.05);在高加索人群中关联也无统计学意义(CC+AC vs AA:OR=0.80,95%CI:0.33~1.92,P0.05);在非洲人群中,MBL2基因P57位点多态性可能降低结核易感性,结果有统计学意义(CC+AC vs AA:OR=0.77,95%CI:0.61~0.97,P0.05)。结论MBL2基因P57位点多态性可能降低非洲人群结核发病风险,与亚洲人群和高加索人群结核的发病风险可能不存在相关性,但该研究样本量较小,需扩大样本量进一步确认。     

Influence of socioeconomic status on acute myocardial infarction in the Chinese population: the INTERHEART China study

Background  Many researches report that low socioeconomic status (SES) is associated with a higher risk of coronary heart disease (CHD). This study aimed to determine whether levels of education, family income, and other SES were associated with acute myocardial infarction (AMI) in the Chinese population, and to compare the difference in this association between northern and southern regions in China.

Methods  We conducted a case-control study. Cases were first AMI (n=2909). Controls (n=2947) were randomly selected and frequency matched to cases on age and sex. SES was measured using education, family income, possessions in the household, and occupation.

Results  Low levels of education (8 years) were more common in cases compared to controls (53.4% and 44.1%; P=0.0001). After adjusting all risk factors, the level of education was associated with AMI risk in the Chinese population (P=0.0005). The odds ratio (OR) associated with education of 8 years or less, compared with more than 12 years (trade school/college/university) was 1.33 (95% CI 1.12–1.59), and for education of 9–12 years 1.04 (95% CI 0.88–1.33). The proportion of higher income population was more in controls than cases (39.4% and 35.3%). Number of possessions and non-professional occupation were only weakly or not at all independently related to AMI. The adjusted OR associated with the lower education was 2.38 (95% CI 1.67–3.39) in women, and 1.18 (95% CI 0.99–1.42) in men (P=0.0001, for heterogeneity). The interaction between levels of education and different regions was significant (P=0.0206, for interaction).

Conclusion  Several socioeconomic factors including levels of education and income were closely associated with increase of AMI risk in China, most markedly in northeast and southern area. The effect of education was stronger towards AMI in women than men.

     

中国汉族女性血清脂联素水平与乳腺癌关系的Meta分析

目的：综合评价中国汉族女性血清脂联素水平与乳腺癌的关系。方法：收集1995年1月至2012年11月国内公开发表的有关文献进行评述,提取信息,并进行Meta分析。结果： 最终有8篇文献纳入本研究,乳腺癌组481例,正常对照组346例。对纳入研究数据进行Meta分析,结果显示:① 与健康对照组相比,乳腺癌血清脂联素水平显著降低［P<0.01,加权均数差(WMD)=-2.412,95％CI为-3.173～-1.651］。绝经前乳腺癌患者血清脂联素水平显著低于绝经前健康女性(P<0.01,WMD=-1.884,95％CI为-2.770 ～-0.998)。② 与淋巴结未转移组相比,乳腺癌淋巴结转移组血清脂联素水平也显著降低(P=0.002,WMD=-1.981,95％CI为-3.238～-0.724)。结论：中国汉族女性低脂联素血症可能是乳腺癌发病危险因素,且与乳腺癌预后不良相关。     

谷胱甘肽硫转移酶基因GSTM1与宣威肺癌易感性关系的研究

目的探讨宣威地区谷胱苷肽硫转移酶（GSTM1）基因多态性与肺癌易感性的关系.方法选取宣威肺癌患者50例,正常对照组50例,采用聚合酶链式反应（PCR）和限制性片段长度多态性（RFLP）技术检测GSTM1的基因多态性.结果 GSTM1基因缺失型患肺癌的OR值为2.71（1.20～6.11）,与对照组比较,差异有统计学意义（P〈0.05）.烧烟煤者发生肺癌的危险性升高（OR=3.78,P〈0.01）,结果发现缺失型基因且烧烟煤者患肺癌的风险明显增高OR值为9.23（2.24～38.29）,经统计学检验,两组差别有统计学意义（P〈0.01）.结论 GSTM1基因缺失型患肺癌的危险性增加,烧烟煤者患肺癌的风险明显增高.     

Association between single nucleotide polymorphisms and wheat-dependent exercise-induced anaphylaxis in Chinese population

Background Wheat-dependent exercise-induced anaphylaxis (WDEIA) is a complex disease resulting from interaction of environmental and genetic factors.The aim of this study was to investigate the associa...     

MiR-146a rs2910164基因多态性与胃癌易感性的系统评价

目的 评价miR-146a rs2910164 G/C基因多态性与胃癌易感性的相关性.方法 全面检索Pubmed、Excerpta Medica Database （Embase）、Chinese Biomedical Literature Database （CBM） and the Cochrane Library、维普、万方数据库,收集研究miR-146a rs2910164 G/C基因多态性与胃癌易感性相关性的文献.对miR-146a rs2910164 G/C各基因型的比较模型（G vs C、GG vs CC、GG vs GC、GC vs CC、GG＋GC vs CC、GGvs GC＋CC）进行定量综合分析.结果 共纳入8篇文献,共有胃癌患者4198例,健康对照5853例.Meta分析结果发现MiR-146a rs2910164 G/C基因多态性与胃癌易感性之间具有相关性（GG vsGC：OR=1.14,95％ CI：1.03～1.27,P=0.01;GG vs GC＋ CC：OR=1.17,95％ CI：1.06 ～ 1.29,P=0.002）.在亚组分析中也有相似的结论.结论 本研究发现miR-146a rs2910164基因多态性与胃癌易感性之间具有相关性,并且miR-146a rs2910164的等位基因G可能是胃癌的危险因素.     

血浆同型半胱氨酸及叶酸、维生素B12水平与脑梗死发病的关系

目的：探讨血浆同型半胱氨酸（Hcy）及其代谢相关因子叶酸、维生素B12的水平与脑梗死发病的关系。方法 病例组为56例脑梗死患者,对照组为72例健康体检者。两组均采用高效液相色谱仪（HPLC）分析测定血浆Hcy浓度,同时测定血浆叶酸、维生素B12的浓度以及血糖、血脂水平。结果1） 病例组血浆Hcy浓度明显高于对照组。2）病例组血浆叶酸水平明显低于对照组,但维生素B12水平与对照组比较差异无显著性。3）在病例组,患者血糖、血脂水平与血浆Hcy水平无明显相关。结论高Hcy血症是脑梗死发病的独立的危险因素。     

Megsin基因3个多态性位点与亚洲人群IgA肾病易感性关联的Meta分析

目的 通过Meta分析评估亚洲人群Megsin基因3个多态性位点(rs1055901、rs1055902和rs2689399)与IgA肾病易感性的关联.方法 通过中国知网、维普、万方数据库、中国生物医学文献数据库、PubMed、Web of Science和Google学术数据库数据库,电子检索关于亚洲人群Megsin基因rs1055901、rs1055902和rs2689399多态性位点与IgA肾病相关性的研究,检索年限为1960年1月1日开始至2016年5月2日.采用Stata12.0软件计算合并比值比(OR)和95％置信区间(CI),并进行敏感性及发表偏倚分析.结果 最终纳入6篇文献(含9项研究),包含2 179例IgA肾病患者和1 769例健康对照.Meta分析结果显示,Megsin基因rs1055901、rs1055902多态性位点与亚洲人群IgA肾病易感性无明显关联.然而,Megsin基因rs2689399位点与亚洲人群IgA肾病易感性呈显著负相关(G和C:OR=0.754,95％CI 0.592～0.961,P=0.022;GG和CC:OR=0.506,95％CI0.287～0.892,P=0.019;GG和GC+CC:OR=0.551,95％CI 0.316～0.961,P=0.036).结论 Megsin基因的rs2689399位点的G等位基因、GG基因型可能是亚洲人群IgA肾病的保护因子.     

GTF2H1基因rs3802967多态性与肺癌易感性的关联性

 目的  探索GTF2H1基因rs3802967位点多态性与肺癌相关性。方法  采集肺癌及健康受试者外周血进行基因分型, 非条件Logistic回归分析该位点多态性与肺癌易感性之间相关性。结果  共收集上海及泰州地区885例肺癌患者和896例健康受试者外周血进行基因分型分析, 结果显示rs3802967 CT+TT vs. CC总体上肺癌风险显著增加(OR=1.943, 95%CI:1.559～2.426, P=3.989×10-9), 吸烟患者(CT+TT vs. CC, OR=2.382, 95%CI:1.798～3.167, P= 1.813×10-9)、男性患者(CT+TT vs. CC, OR=2.141, 95%CI:1.644～2.796, P=1.852×10-8)以及男性吸烟患者(CT+TT vs. CC, OR=2.283, 95%CI:1.709~3.059, P=2.718×10-8)肺癌风险显著增加。结论  GTF2H1基因rs3802967 C>T与肺癌患病风险正相关, 尤其在男性、吸烟患者中显著, 该位点有望成为肺癌易感个体筛查参考指标。     

白细胞介素-8-251T/A基因多态性和肺癌易感性的 Meta 分析

目的：本研究对白细胞介素-8-251 T/ A（interleukin-8-251 T/ A,IL-8-251 T/ A）（rs4073）与肺癌发生风险相关性文献进行Meta 分析来评价两者相关性特征。方法检索2013年12月1日之前 PubMed 中白细胞介素-8-251 T/ A（interleukin-8-251 T/ A, IL-8-251T/ A）（rs4073）基因多态性与肺癌发生风险相关性病例对照研究的文献。应用 Stata11.0软件合并计算 A/ A 纯合子和携带 A 等位基因（ T/ A ＋ A/ A）杂合子与野生型 T/ T 纯合子肺癌发生的比值比（ odds ratios,OR）及95%置信区间（ confidence intervals,CI）,并按照亚裔与非亚裔人群进行亚组分析,评价 IL-8-251T/ A（rs4073）不同基因亚型与肺癌发生的相关性及与不同种族肺癌发生的相关性。结果共有6篇文献符合纳入标准。合并计算所有纳入文献中的 IL-8-251T/ A（rs4073）A/ A 纯合子和携带 A 等位基因（T/ A＋A/ A）杂合子与野生型 T/ T 纯合子肺癌发生的 OR 值,肺癌组3265例 OR =1.03（95% CI =0.92~1.14,异质性 P=0.235）,对照组3607例 OR=1.07（95% CI=0.96~1.19,异质性 P=0.245）,IL-8-251T/ A（rs4073）基因多态性与肺癌发生无相关性。当按亚裔与非亚裔人群进行亚组分析后,发现亚裔人群中携带 A 等位基因（T/ A＋A/ A）杂合子（OR =1.48,95%CI=1.04~2.11,异质性 P=0.030）和 A/ A 纯合子（OR=1.35,95% CI=1.02~1.92,异质性 P=0.090）与 T/ T 纯合子肺癌发生风险有着显著的相关性。结论 IL-8-251T/ A（rs4073）基因多态性在全部人群中与肺癌发生风险无相关性,但是在亚裔人群中 A 等位基因的存在与肺癌发生显著相关。     

CYP1A2 rs762551多态性与肺癌患病风险相关性的Meta分析

目的:许多已经发表的文献探讨了CYP1A2 rs762551多态性与肺癌患病风险的关系,但得出的结论却有很多不一致。因此,本文采用Meta分析方法对其进行评价。方法:检索PubMed数据库中相关的队列研究和病例-对照研究,检索时限为从建库至2014年2月1日。对合格的研究进行数据提取后,采用RevMan 5.2计算合并的OR值及其95%CI。结果:最终纳入7项病例-对照研究和1项巢式病例-对照研究,包括1 675例肺癌病例和2 393例对照。Meta分析显示CYP1A2 rs762551多态性与肺癌患病风险总体上没有关系[AA vs CC:(OR=0.73,95%CI=0.50¹.07);AC vs CC:(OR=0.82,95%CI=0.621.07);AC vs CC:(OR=0.82,95%CI=0.62¹.09);(AC+AA)vs CC:(OR=0.79,95%CI=0.581.09);(AC+AA)vs CC:(OR=0.79,95%CI=0.58¹.07);AA vs(CC+AC):(OR=0.87,95%CI=0.671.07);AA vs(CC+AC):(OR=0.87,95%CI=0.67¹.13)]。亚组分析显示CYP1A2 rs762551多态性与基于人群的肺癌患病风险具有关联。结论:本Meta分析结果表明CYP1A2 rs762551多态性与基于人群对照的肺癌具有相关性。基于本Meta分析的局限性,结果仍需进一步开展高质量研究进行论证。     

糖尿病患者罹患肾脏恶性肿瘤危险陛的Meta分析

目的探讨糖尿病与肾脏恶性肿瘤发病风险的关系。方法通过网络检索1990年1月至2011年10月PubMed数据库糖尿病患者发生肾脏恶性肿瘤风险性的相关队列研究和病例对照研究文献,按纳入和排除标准进行筛选、资料提取,采用RevMan5．0软件完成meta分析。结果共纳入14篇文献（8项队列研究和6项病例对照研究）,共包括6,645,516例研究对象。Meta分析显示：糖尿病患者肾脏恶性肿瘤的发生率较对照组高,差异有统计学意义（OR=1．28,95％CI1．10～1．48,P〈0．05）。分层研究发现,队列研究组中的糖尿病患者患肾脏恶性肿瘤的风险性较高（OR=1．32,95％CI1．14～1．53,P〈0．05）,病例对照研究组中的糖尿病患者患肾脏恶性肿瘤的风险性并未增高（OR=1．21,95％C10．79～1．84,P〉0．05）。结论糖尿病与肾脏恶性肿瘤的发生有一定关联,但是否为肾脏恶性肿瘤发生的独立危险因素还需进一步研究。     

代谢综合征与结肠癌关系的 Meta 分析

目的：通过 Meta 分析探讨代谢综合征与结肠癌的关系。方法计算机检索中国知网、万方数据库、PubMed、Ovid-sp 数据库,时限为1990年1月至2014年5月。按纳入和排除标准,进行文献筛选及资料提取。采用 STATA12.0软件进行 Meta分析。结果共纳入8篇文献(6项队列研究、2项病例对照研究)。Meta 分析结果显示,代谢综合征结肠癌发病风险明显高于对照组(OR=1.43,95%CI ：1.23~1.66,P <0.05);分层分析发现,男性人群中,代谢综合征结肠癌发病风险高于对照组(OR =1.50,95%CI ：1.22~1.84,P <0.05),然而,女性人群中,其合并效应量 OR 为1.39(95%CI ：0.98~1.96,P =0.07),差异却无统计学意义。另外,与对照组相比,代谢综合征结肠癌死亡风险并未发生变化(OR=1.22,95%CI ：0.92~1.63,P =0.17)。结论代谢综合征与结肠癌发病有一定联系,但存在性别差异。代谢综合征结肠癌死亡风险并未增加,有待更多前瞻性队列研究进一步证实。     

Adipocytokines and breast cancer risk

Background Many researches suggested that obesity increased the risk of breast cancer, but the mechanism was currently unknown. Adipocytokines might mediate the relationship. Our study was aimed to investigate the relationship between serum levels of resistin, adiponectin and leptin and the onset, invasion and metastasis of breast cancer. Methods Blood samples were collected from 80 newly diagnosed, histologically confirmed breast cancer patients and 50 age-matched healthy controls. Serum levels of resistin, adiponectin and leptin were determined by enzyme-linked immunosorbent assays (ELISA); fasting blood glucose (FBG), lipids, body mass index (BMI), and waist circumference (WC) were assayed simultaneously.Results Serum levels of adiponectin ((8.60±2.92) mg/L vs (10.37±2.81) mg/L, P=0.001) and HDL-c were significantly decreased in breast cancer patients in comparison to controls. Serum levels of resistin ((26.35±5.36) μg/L vs (23.32±4.75) μg/L, P=0.000), leptin ((1.35±0.42) μg/L vs (1.06±0.39) μg/L, P=0.003), FBG and triglyceride (TG) in breast cancer patients were increased in contrast to controls, respectively. However, we did not find the significant difference of the serum levels of resistin, adiponectin and leptin between premenopausal breast cancer patients and healthy controls (P＝0.091, 0.109 and 0.084, respectively). The serum levels of resistin, adiponectin and leptin were significantly different between patients with lymph node metastasis (LNM) and those without LNM (P=0.001, 0.000 and 0.006, respectively). The stepwise regression analysis indicated that the tumor size had the close correlation with leptin (R(2)=0.414, P=0.000) and FBG (R(2)=0.602, P=0.000). Logistic regression analysis showed that reduced serum levels of adiponectin (OR: 0.805; 95%CI: 0.704–0.921; P＝0.001), HDL (OR: 0.087; 95%CI: 0.011–0.691, P＝0.021), elevated leptin (OR: 2.235; 95%CI:1.898–4.526; P＝0.004) and resistin (OR: 1.335; 95%CI: 1.114–2.354; P＝0.012) increased the risk for breast cancer; Reduced serum levels of adiponectin (OR: 0.742; 95%CI: 0.504–0.921; P=0.003) and elevated leptin (OR: 2.134; 95%CI:1.725–3.921; P= 0.001) were associated with lymph node metastasis of breast cancer. Conclusions The decreased serum adiponectin levels and increased serum resistin and leptin levels are risk factors of breast cancer. The low serum adiponectin levels and high serum leptin levels are independent risk factors for metastasis of cancer. The association between obesity and breast cancer risk might be explained by adipocytokines.     

miRNA基因单核苷酸多态性与非小细胞肺癌易感性的关联研究

目的 探讨微小RNA(microRNA,miRNA)基因单核苷酸多态性(single nucleotide polymorphism,SNP)与非小细胞肺癌(non-small cell lung cancer,NSCLC)发生风险的关系.方法 通过生物信息学方法筛选出13个位于miRNA基因序列上的潜在功能性的SNPs位点.采用病例-对照研究设计,纳入新发NSCLC患者626例,对照为736例同期门诊体检人群.提取研究对象外周血细胞基因组DNA,采用SNPscanTM对筛选的13个SNPs位点进行基因分型,多因素Logistic回归分析SNPs与肺癌发生风险的关联性和关联强度.结果 发现3个SNPs,即rs62085660(位于miRNA AC145343.1)、rs11597888(位于miRNA AL391839.1)和rs16867808(位于miRNA AL021918.2)与NSCLC发生风险显著相关,但此种关联只限于特定的亚组人群.rs62085660 (C/G)位点与肺鳞癌的发生风险相关(加性模型,校正OR =0.79,95％CI=0.62 ～ 1.00,P=0.049;显性模型,校正OR=0.72,95％ CI =0.53 ～0.98,P=0.035).rs11597888(G/A)和rs16867808 (T/C)位点只在吸烟人群中与肺癌易感性相关(rs11597888:显性模型,校正OR=1.42,95％CI=1.03 ～ 1.96,P=0.033;rs16867808:加性模型,校正OR =0.58,95％ CI=0.40 ～0.84,P=0.004,显性模型,校正OR =0.53,95％ CI =0.35～0.81,P=0.004).结论 rs62085660位点与肺鳞癌发生风险相关,rs11597888位点和rs16867808位点与吸烟相关性肺癌发生风险相关.     

Excision repair cross complementation group 1 polymorphisms and lung cancer risk: a meta-analysis

Background  Several studies have evaluated the association between polymorphisms of encoding excision repair cross complementation group 1 (ERCC1) enzyme and lung cancer risk in diverse populations but with conflicting results. By pooling the relatively small samples in each study, it is possible to perform a meta-analysis of the evidence by rigorous methods.

Methods  Embase, Ovid, Medline and Chinese National Knowledge Infrastructure were searched. Additional studies were identified from references in original studies or review articles. Articles meeting the inclusion criteria were reviewed systematically, and the reported data were aggregated using the statistical techniques of meta-analysis.

Results  We found 3810 cases with lung cancer and 4332 controls from seven eligible studies. T19007C polymorphism showed no significant effect on lung cancer risk (C allele vs. T allele: odds ratio (OR)=0.91, 95% confidence interval (CI)=0.80–1.04; CC vs. TT: OR=0.76, 95% CI=0.56–1.02; CC vs. (CT+TT): OR=0.96, 95% CI=0.84–1.10). Similarly, there was no significant main effects for T19007C polymorphism on lung cancer risk when stratified analyses by ethnicity (Chinese or Caucasian). No significant association was found between C8092A polymorphism (3060 patients and 2729 controls) and the risk of lung cancer (A allele vs. C allele: OR=1.03, 95% CI=0.95–1.11; AA vs. CC: OR=1.08, 95% CI=0.88–1.33; AA vs. (AC+CC): OR=1.08, 95% CI=0.88–1.31).

Conclusion  We found little evidence of an association between the T1900C or C8092A polymorphisms of ERCC 1 and the risk of lung cancer in Caucasian or Han Chinese people.