目的Meta分析CD14基因-159C/T多态性与变应性鼻炎(AR)易感性关系,为AR的发病机制及疾病预防提供理论依据。方法检索PubMed、EMBASE、Cochrane等国外数据库及中国期刊全文数据库、中国科技期刊数据库、中国生物医学文献数据库、万方数字...目的Meta分析CD14基因-159C/T多态性与变应性鼻炎(AR)易感性关系,为AR的发病机制及疾病预防提供理论依据。方法检索PubMed、EMBASE、Cochrane等国外数据库及中国期刊全文数据库、中国科技期刊数据库、中国生物医学文献数据库、万方数字期刊全文数据库等中文数据库中发表的CD14基因-159C/T多态性与变应性鼻炎易感性关系的病例对照研究。根据纳入和排除标准对文献进行筛选,用Jadad quantity对纳入的文献进行偏差评估和敏感性分析,用Revman5.3软件对数据进行处理。结果根据纳入和排除标准,共纳入9篇文献,共2319名受试者,其中病例组1195例,对照组1124例。Meta分析结果显示:优势基因模型下(CC vs CT+TT),组合OR值为0.74,95%CI为[0.61,0.90],P=0.002,差异有统计学意义;超显性基因模型下(CT vs CC+TT),联合OR值为1.12,95%CI为[0.95,1.32],P=0.18,差异无统计学意义;隐性基因模型下(TT vs CC+CT),联合OR值为1.14,95%CI为[0.95,1.38],P=0.15;等位基因(C对T),合并OR值为0.95,95%CI为[0.83,1.10],P=0.50,差异无统计学意义。表明与T等位基因相比,在a位点携带C等位基因不会增加AR的易感性。优势基因模型可能增加基因型CD14基因-159C/T的AR易感性,而隐性基因模型和超显性基因模型可能不会增加基因型CD14基因-159C/T的AR易感性。结论CD14基因-159C/T多态性与AR易感性无显著相关性。基因座中的基因型可能增加AR易感性的基因模型是优势基因模型。展开更多
目的探讨CD14基因-159C/T多态性与变应性鼻炎(AR)发病风险的相关性。方法检索中国学术期刊文献数据库和PubMed,Embase等查找有关CD14基因-159C/T多态性与AR易感性关系的病例对照研究,采用Stata l5.0统计学软件进行meta分析。结果最终共...目的探讨CD14基因-159C/T多态性与变应性鼻炎(AR)发病风险的相关性。方法检索中国学术期刊文献数据库和PubMed,Embase等查找有关CD14基因-159C/T多态性与AR易感性关系的病例对照研究,采用Stata l5.0统计学软件进行meta分析。结果最终共纳入9篇文献,均为病例对照研究,其中病例组1195例、对照组1124例。meta分析总体结果:T vs C等位基因和4种基因模型在病例组和对照组间的差异无统计学意义。此外,按对照组来源和单核苷酸多态性(SNP检测法)进行亚组分析:T vs C等位基因和各基因模型在病例组和对照组间的差异无统计学意义。当按种族进行亚组分析时发现,在非洲人群中,等位基因T vs C(OR=2.05,95%CI:1.47~2.86;P<0.05)、显性模型TT+CT vs CC(OR=2.00,95%CI:1.24~3.22;P=0.004)、隐性模型TT vs CC+CT(OR=4.04,95%CI:2.02~8.09;P<0.05)、TT vs CC(OR=5.02,95%CI:2.37~10.63;P<0.05)在病例组和对照组间的差异有统计学意义,而CT vs CC(OR=1.48,95%CI:0.89~2.45;P=0.129)差异无统计学意义。在亚洲人群中,病例组和对照组间的差异均无统计学意义。结论亚洲人群中,CD14基因-159C/T多态性与AR易感性无明显相关性;非洲人群中埃及儿童CD14基因-159位点的T等位基因与特应性哮喘和AR有关,TT基因与烟草烟雾暴露儿童免疫球蛋白E(IgE)水平升高有关。展开更多
AIM: To investigate whether single-nucleotide polymor- phisms in the promoter regions of endotoxin-responsive genes CD14 C (-159) T is associated with chronic hepatitis B. METHODS: We obtained genomic DNA from 80 pati...AIM: To investigate whether single-nucleotide polymor- phisms in the promoter regions of endotoxin-responsive genes CD14 C (-159) T is associated with chronic hepatitis B. METHODS: We obtained genomic DNA from 80 patients with established diagnosis of chronic hepatitis B and 126 healthy subjects served as a control population. The CD 14 C (-159) T polymorphism was investigated using an allele specific PCR method. RESULTS: Twenty seven percent of chronic hepatitis B patients and 75% of controls were heterozygous for CT genotype. The difference between the chronic hepatitis B and control groups was statistically significant [P < 0.0001; Odds ratio (OR) = 2.887; 95% CI: 1.609-5.178]. Twenty four point six percent of chronic hepatitis B and patients 12.3% of the control group were heterozygous for TT genotype. The difference between groups was not statistically significant (P = 0.256; OR = 0.658; 95% CI: 0.319-1.358). Forty eight point four percent of chronic hepatitis B patients and 12.7% of control were homozy- gote for CC genotype (P < 0.004; OR = 0.416; 95% CI: 0.229-0.755). The frequency of allele C was 61.9% and allele T was 38.1% in hepatitis B patients group. The frequency of allele C was 55.2% and allele T was 44.8% for the control group (P = 0.179; OR = 1.319; 95% CI: 0.881-1.977). CONCLUSION: The TT heterozygous genotype was not a risk factor for chronic hepatitis B. CC homozygote genotype is protective for hepatitis B. Lack of heterozy- gosis of genotype CT is a risk factor for chronic hepatitis B. Alleles C or T were not risk factors for chronic hepatitis B. These findings show the role of a single-nucleotide polymorphism at CD14/-159 on the development ofchronic hepatitis B. Endotoxin susceptibility may play a role in the pathogenesis of chronic hepatitis B.展开更多
目的探讨CD14启动子-159位点C/T多态性对健康青年血脂比值的影响及在高糖低脂(highcarbohydrate/low fat,HC/LF)膳食诱导的血脂比值变化中的作用。方法纳入56名(22.89±1.80岁)健康青年志愿者,先后给予7d平衡膳食和6dHC/LF膳食,于...目的探讨CD14启动子-159位点C/T多态性对健康青年血脂比值的影响及在高糖低脂(highcarbohydrate/low fat,HC/LF)膳食诱导的血脂比值变化中的作用。方法纳入56名(22.89±1.80岁)健康青年志愿者,先后给予7d平衡膳食和6dHC/LF膳食,于第1d、第8d及第14d清晨抽取12h空腹静脉血,测定血脂水平,计算甘油三酯/高密度脂蛋白胆固醇(triglyceride/high density lipoprotein-cholesterol,TG/HDL-c)、log(TG/HDL-c)、总胆固醇/高密度脂蛋白胆固醇(total cholesterol/high density lipoprotein-cholesterol,TC/HDL-c)和低密度脂蛋白胆固醇/高密度脂蛋白胆固醇(low density lipoprotein-cholesterol/high density lipoprotein-cholesterol,LDL-c/HDL-c)。提取基因组DNA,聚合酶链反应-限制性酶切法分析CD14启动子-159位点多态性。结果女性TT纯合子受试者TG/HDL-c(P<0.05),log(TG/HDL-c)(P<0.05)和LDL-c/HDL-c(P<0.05)基础值高于C等位基因携带者,男性C等位基因携带者TG/HDL-c(P<0.05)、log(TG/HDL-c)(P<0.001)和TC/HDL-c(P<0.01)高于女性。HC/LF膳食前,女性TT纯合子受试者TG/HDL-c(P<0.01)、log(TG/HDL-c)(P<0.001)和TC/HDL-c(P<0.05)均高于C等位基因携带者,男性C等位基因携带者4种血脂比值均高于女性(P<0.05)。HC/LF膳食后,女性TT纯合子受试者TG/HDL-c(P<0.05)、log(TG/HDL-c)(P<0.05)和LDL-c/HDL-c(P<0.05)均高于C等位基因携带者,男性C等位基因携带者TG/HDL-c(P<0.05)、log(TG/HDL-c)(P<0.01)高于女性。与HC/LF膳食前相比,HC/LF膳食后男性C等位基因携带者TC/HDL-c(P<0.001)、LDL-c/HDL-c(P<0.01)降低,TT纯合子受试者TC/HDL-c(P<0.001)降低。HC/LF膳食后女性C等位基因携带者TG/HDL-c(P<0.05)、log(TG/HDL-c)(P<0.05)升高,TC/HDL-c(P<0.001)、LDL-c/HDL-c(P<0.01)降低,TT纯合子受试者只有TC/HDL-c(P<0.01)降低。结论相较于T等位基因携带者,C等位基因携带者中,膳食改变对血脂表型的作用是微效,可能被CD14-159位点C等位基因掩盖。HC/LF膳食与CD14-159位点C等位基因的相互作用能够降低青年男女LDL-c/HDL-c,升高女性TG/HDL-c和log(TG/HDL-c)。展开更多
文摘目的Meta分析CD14基因-159C/T多态性与变应性鼻炎(AR)易感性关系,为AR的发病机制及疾病预防提供理论依据。方法检索PubMed、EMBASE、Cochrane等国外数据库及中国期刊全文数据库、中国科技期刊数据库、中国生物医学文献数据库、万方数字期刊全文数据库等中文数据库中发表的CD14基因-159C/T多态性与变应性鼻炎易感性关系的病例对照研究。根据纳入和排除标准对文献进行筛选,用Jadad quantity对纳入的文献进行偏差评估和敏感性分析,用Revman5.3软件对数据进行处理。结果根据纳入和排除标准,共纳入9篇文献,共2319名受试者,其中病例组1195例,对照组1124例。Meta分析结果显示:优势基因模型下(CC vs CT+TT),组合OR值为0.74,95%CI为[0.61,0.90],P=0.002,差异有统计学意义;超显性基因模型下(CT vs CC+TT),联合OR值为1.12,95%CI为[0.95,1.32],P=0.18,差异无统计学意义;隐性基因模型下(TT vs CC+CT),联合OR值为1.14,95%CI为[0.95,1.38],P=0.15;等位基因(C对T),合并OR值为0.95,95%CI为[0.83,1.10],P=0.50,差异无统计学意义。表明与T等位基因相比,在a位点携带C等位基因不会增加AR的易感性。优势基因模型可能增加基因型CD14基因-159C/T的AR易感性,而隐性基因模型和超显性基因模型可能不会增加基因型CD14基因-159C/T的AR易感性。结论CD14基因-159C/T多态性与AR易感性无显著相关性。基因座中的基因型可能增加AR易感性的基因模型是优势基因模型。
文摘目的探讨CD14基因-159C/T多态性与变应性鼻炎(AR)发病风险的相关性。方法检索中国学术期刊文献数据库和PubMed,Embase等查找有关CD14基因-159C/T多态性与AR易感性关系的病例对照研究,采用Stata l5.0统计学软件进行meta分析。结果最终共纳入9篇文献,均为病例对照研究,其中病例组1195例、对照组1124例。meta分析总体结果:T vs C等位基因和4种基因模型在病例组和对照组间的差异无统计学意义。此外,按对照组来源和单核苷酸多态性(SNP检测法)进行亚组分析:T vs C等位基因和各基因模型在病例组和对照组间的差异无统计学意义。当按种族进行亚组分析时发现,在非洲人群中,等位基因T vs C(OR=2.05,95%CI:1.47~2.86;P<0.05)、显性模型TT+CT vs CC(OR=2.00,95%CI:1.24~3.22;P=0.004)、隐性模型TT vs CC+CT(OR=4.04,95%CI:2.02~8.09;P<0.05)、TT vs CC(OR=5.02,95%CI:2.37~10.63;P<0.05)在病例组和对照组间的差异有统计学意义,而CT vs CC(OR=1.48,95%CI:0.89~2.45;P=0.129)差异无统计学意义。在亚洲人群中,病例组和对照组间的差异均无统计学意义。结论亚洲人群中,CD14基因-159C/T多态性与AR易感性无明显相关性;非洲人群中埃及儿童CD14基因-159位点的T等位基因与特应性哮喘和AR有关,TT基因与烟草烟雾暴露儿童免疫球蛋白E(IgE)水平升高有关。
文摘AIM: To investigate whether single-nucleotide polymor- phisms in the promoter regions of endotoxin-responsive genes CD14 C (-159) T is associated with chronic hepatitis B. METHODS: We obtained genomic DNA from 80 patients with established diagnosis of chronic hepatitis B and 126 healthy subjects served as a control population. The CD 14 C (-159) T polymorphism was investigated using an allele specific PCR method. RESULTS: Twenty seven percent of chronic hepatitis B patients and 75% of controls were heterozygous for CT genotype. The difference between the chronic hepatitis B and control groups was statistically significant [P < 0.0001; Odds ratio (OR) = 2.887; 95% CI: 1.609-5.178]. Twenty four point six percent of chronic hepatitis B and patients 12.3% of the control group were heterozygous for TT genotype. The difference between groups was not statistically significant (P = 0.256; OR = 0.658; 95% CI: 0.319-1.358). Forty eight point four percent of chronic hepatitis B patients and 12.7% of control were homozy- gote for CC genotype (P < 0.004; OR = 0.416; 95% CI: 0.229-0.755). The frequency of allele C was 61.9% and allele T was 38.1% in hepatitis B patients group. The frequency of allele C was 55.2% and allele T was 44.8% for the control group (P = 0.179; OR = 1.319; 95% CI: 0.881-1.977). CONCLUSION: The TT heterozygous genotype was not a risk factor for chronic hepatitis B. CC homozygote genotype is protective for hepatitis B. Lack of heterozy- gosis of genotype CT is a risk factor for chronic hepatitis B. Alleles C or T were not risk factors for chronic hepatitis B. These findings show the role of a single-nucleotide polymorphism at CD14/-159 on the development ofchronic hepatitis B. Endotoxin susceptibility may play a role in the pathogenesis of chronic hepatitis B.
文摘目的探讨CD14启动子-159位点C/T多态性对健康青年血脂比值的影响及在高糖低脂(highcarbohydrate/low fat,HC/LF)膳食诱导的血脂比值变化中的作用。方法纳入56名(22.89±1.80岁)健康青年志愿者,先后给予7d平衡膳食和6dHC/LF膳食,于第1d、第8d及第14d清晨抽取12h空腹静脉血,测定血脂水平,计算甘油三酯/高密度脂蛋白胆固醇(triglyceride/high density lipoprotein-cholesterol,TG/HDL-c)、log(TG/HDL-c)、总胆固醇/高密度脂蛋白胆固醇(total cholesterol/high density lipoprotein-cholesterol,TC/HDL-c)和低密度脂蛋白胆固醇/高密度脂蛋白胆固醇(low density lipoprotein-cholesterol/high density lipoprotein-cholesterol,LDL-c/HDL-c)。提取基因组DNA,聚合酶链反应-限制性酶切法分析CD14启动子-159位点多态性。结果女性TT纯合子受试者TG/HDL-c(P<0.05),log(TG/HDL-c)(P<0.05)和LDL-c/HDL-c(P<0.05)基础值高于C等位基因携带者,男性C等位基因携带者TG/HDL-c(P<0.05)、log(TG/HDL-c)(P<0.001)和TC/HDL-c(P<0.01)高于女性。HC/LF膳食前,女性TT纯合子受试者TG/HDL-c(P<0.01)、log(TG/HDL-c)(P<0.001)和TC/HDL-c(P<0.05)均高于C等位基因携带者,男性C等位基因携带者4种血脂比值均高于女性(P<0.05)。HC/LF膳食后,女性TT纯合子受试者TG/HDL-c(P<0.05)、log(TG/HDL-c)(P<0.05)和LDL-c/HDL-c(P<0.05)均高于C等位基因携带者,男性C等位基因携带者TG/HDL-c(P<0.05)、log(TG/HDL-c)(P<0.01)高于女性。与HC/LF膳食前相比,HC/LF膳食后男性C等位基因携带者TC/HDL-c(P<0.001)、LDL-c/HDL-c(P<0.01)降低,TT纯合子受试者TC/HDL-c(P<0.001)降低。HC/LF膳食后女性C等位基因携带者TG/HDL-c(P<0.05)、log(TG/HDL-c)(P<0.05)升高,TC/HDL-c(P<0.001)、LDL-c/HDL-c(P<0.01)降低,TT纯合子受试者只有TC/HDL-c(P<0.01)降低。结论相较于T等位基因携带者,C等位基因携带者中,膳食改变对血脂表型的作用是微效,可能被CD14-159位点C等位基因掩盖。HC/LF膳食与CD14-159位点C等位基因的相互作用能够降低青年男女LDL-c/HDL-c,升高女性TG/HDL-c和log(TG/HDL-c)。
