目的:探索中国人群中叶酸/同型半胱氨酸代谢通路上的基因多态性与非综合征型唇腭裂(isolated non-syndromic cleft lip with or without cleft palate,NSCL/P)的关联关系及可能存在的基因-环境交互作用。方法:在806个中国人群的核心家庭...目的:探索中国人群中叶酸/同型半胱氨酸代谢通路上的基因多态性与非综合征型唇腭裂(isolated non-syndromic cleft lip with or without cleft palate,NSCL/P)的关联关系及可能存在的基因-环境交互作用。方法:在806个中国人群的核心家庭中,对叶酸/同型半胱氨酸通路上的18个基因进行了传递不平衡检验以及基因-环境交互作用分析。环境因素包括母亲孕期吸烟、被动吸烟、饮酒及服用多维生素补充剂。结果:经过质量控制的筛选,共对257个位点的单核苷酸多态性(single nucleotide polymorphisms,SNPs)进行了传递不平衡检验及交互作用分析,结果显示,共有4个SNPs(rs6428977、rs12060264、rs7730643和rs4920037)与NSCL/P显著关联(P<0.05)。但在Bon-ferroni校正后,该通路上的代谢基因位点与NSCL/P之间的关联不具有统计学意义。经多重检验校正后,未发现常见孕期环境暴露与叶酸/同型半胱氨酸代谢通路上的基因多态性存在显著的交互作用。结论:未发现叶酸/同型半胱氨酸代谢通路上的基因多态性与NSCL/P之间存在关联。展开更多
目的:探索中国人群中细胞黏附相关基因多态性与非综合征型唇裂合并或不合并腭裂(isolated nonsyndromic cleft lip with or without cleft palate,NSCL/P)的关联关系及可能存在的基因-环境交互作用。方法:对一项国际多中心的全基因组关...目的:探索中国人群中细胞黏附相关基因多态性与非综合征型唇裂合并或不合并腭裂(isolated nonsyndromic cleft lip with or without cleft palate,NSCL/P)的关联关系及可能存在的基因-环境交互作用。方法:对一项国际多中心的全基因组关联研究(genome-wide association study,GWAS)的数据进行再分析,选取其中806个中国人群NSCL/P核心家庭,对该人群的8个细胞黏附相关基因包括CDH1、CTNNB1、PVRL1、PVRL2、PVRL3、ACTN1、VCL、LEF1进行了传递不平衡检验(transmisssion diseqilibrium test,TDT)及基因-环境交互作用分析。环境因素包括患儿母亲孕期吸烟、被动吸烟、饮酒及服用多种维生素。结果:经数据质量控制后,共纳入226个单核苷酸多态性(single nucleotide polymorphisms,SNPs)位点,TDT结果显示,CTNNB1、CDH1、ACTN1基因中有23个SNPs与NSCL/P之间存在关联(P<0.05),但经Bonferroni校正后,这些关联均无统计学意义(P>0.000 2)。基因-环境交互作用的分析结果显示,14号染色体的ACTN1基因中rs743127位点与母亲孕期被动吸烟的交互作用具有统计学意义(P=0.000 1),母亲孕期无被动吸烟时携带一个该危险位点的患儿的OR值为0.59(95%CI:0.38-0.90),患儿母亲孕期中有被动吸烟情况时携带一个危险位点的患儿的OR值为2.00(95%CI:1.23-3.26)。而ACTN1基因的rs1475034、rs370535、rs2273419位点、CTNNB1基因的rs106871位点与被动吸烟和PVRL3基因的rs7634000、rs2971366、rs2634553、rs1489032、rs7624812位点与母亲孕期补充维生素的交互作用并无统计学意义(P>0.000 2)。结论:传递不平衡检验未发现所纳入的细胞黏附相关基因多态性与NSCL/P存在关联,但基因-环境交互作用分析结果提示,ACTN1基因可能通过基因-环境交互作用而影响NSCL/P的发病风险。展开更多
Early-and late-onset narcolepsy constitutes two distinct diagnostic subgroups.However,it is not clear whether symptomology and genetic risk factors differ between early-and late-onset narcoleptics.This study compared ...Early-and late-onset narcolepsy constitutes two distinct diagnostic subgroups.However,it is not clear whether symptomology and genetic risk factors differ between early-and late-onset narcoleptics.This study compared clinical data and single-nucleotide polymorphisms(SNPs)between early-and late-onset patients in a large cohort of 899 Han Chinese narcolepsy patients.Blood,cerebrospinal fluid,and clinical data were prospectively collected from patients,and patients were genotyped for 40 previously reported narcolepsy risk-conferring SNPs.Genetic risk scores(GRSs),associations of five different sets of SNPs(GRS1–GRS5)with early-and late-onset narcolepsy,were evaluated using logistic regression and receiver operating characteristic curves.Mean sleep latency was significantly shorter in early-onset cases than in late-onset cases.Symptom severity was greater among late-onset patients,with higher rates of sleep paralysis,hypnagogic hallucinations,health-related quality of life impairment,and concurrent presentation with four or more symptoms.Hypocretin levels did not differ significantly between early-and late-onset cases.Only rs3181077(CCR1/CCR3)and rs9274477(HLA-DQB1)were more prevalent among early-onset cases.Only GRS1(26 SNPs;OR=1.513,95%CI:0.893–2.585;P<0.05)and GRS5(6 SNPs;OR=1.893,95%CI:1.204–2.993;P<0.05)were associated with early-onset narcolepsy,with areas under the receiver operating characteristic curves of 0.731 and 0.732,respectively.Neither GRS1 nor GRS5 included SNPs in HLA regions.Our results indicate that symptomology and genetic risk factors differ between early-and late-onset narcolepsy.This protocol was approved by the Institutional Review Board(IRB)Panels on Medical Human Subjects at Peking University People’s Hospital,China(approval No.Yuanlunshenlinyi 86)in October 2011.展开更多
Background Parkinson＇s disease （PD） is an autosomally inherited neurodegenerative disease in elderly people.The etiology of PD has long been thought to be associated with both genetic and environmental factors.To e...Background Parkinson＇s disease （PD） is an autosomally inherited neurodegenerative disease in elderly people.The etiology of PD has long been thought to be associated with both genetic and environmental factors.To explore potential genetic risk factors for PD in the northern Han Chinese population,we investigated three single nucleotide polymorphisms （SNPs） （rs4538475,rs11107 and rs12564040） in the BST1,PARK15 and PARK9 genes.Methods Genomic DNA from 215 PD patients and 212 matched controls was amplified in two independent PCR systems and subsequently genotyped by digestion with the endonuclease Pstl.Genetic parameter and association studies were carried out with SPSS 13.0 and PLINK 1.07 software.Results We could accurately detect all genotypes in the three loci with the PCR-RFLP or mismatched PCR-RFLP techniques.The observed heterozygosities of the rs4538475 and rs11107 loci in PD and control groups ranged from 0.460-0.481 and 0.410-0.441,in BST1,PARK15 respectively,while we detected no heterozygosity at the rs12564040 locus in PARK9.The similar distributions of genotypic frequency between both groups suggest that the three SNPs investigated in this study are unlikely to play roles as common risk factors or pathogenic mutations for PD in northern Han Chinese.Conclusion The SNPs investigated in the BST1,PARK15 and PARK9 genes associated with PD susceptibility are not associated with PD in the northern Han Chinese population.展开更多
文摘目的:探索中国人群中叶酸/同型半胱氨酸代谢通路上的基因多态性与非综合征型唇腭裂(isolated non-syndromic cleft lip with or without cleft palate,NSCL/P)的关联关系及可能存在的基因-环境交互作用。方法:在806个中国人群的核心家庭中,对叶酸/同型半胱氨酸通路上的18个基因进行了传递不平衡检验以及基因-环境交互作用分析。环境因素包括母亲孕期吸烟、被动吸烟、饮酒及服用多维生素补充剂。结果:经过质量控制的筛选,共对257个位点的单核苷酸多态性(single nucleotide polymorphisms,SNPs)进行了传递不平衡检验及交互作用分析,结果显示,共有4个SNPs(rs6428977、rs12060264、rs7730643和rs4920037)与NSCL/P显著关联(P<0.05)。但在Bon-ferroni校正后,该通路上的代谢基因位点与NSCL/P之间的关联不具有统计学意义。经多重检验校正后,未发现常见孕期环境暴露与叶酸/同型半胱氨酸代谢通路上的基因多态性存在显著的交互作用。结论:未发现叶酸/同型半胱氨酸代谢通路上的基因多态性与NSCL/P之间存在关联。
文摘目的:探索中国人群中细胞黏附相关基因多态性与非综合征型唇裂合并或不合并腭裂(isolated nonsyndromic cleft lip with or without cleft palate,NSCL/P)的关联关系及可能存在的基因-环境交互作用。方法:对一项国际多中心的全基因组关联研究(genome-wide association study,GWAS)的数据进行再分析,选取其中806个中国人群NSCL/P核心家庭,对该人群的8个细胞黏附相关基因包括CDH1、CTNNB1、PVRL1、PVRL2、PVRL3、ACTN1、VCL、LEF1进行了传递不平衡检验(transmisssion diseqilibrium test,TDT)及基因-环境交互作用分析。环境因素包括患儿母亲孕期吸烟、被动吸烟、饮酒及服用多种维生素。结果:经数据质量控制后,共纳入226个单核苷酸多态性(single nucleotide polymorphisms,SNPs)位点,TDT结果显示,CTNNB1、CDH1、ACTN1基因中有23个SNPs与NSCL/P之间存在关联(P<0.05),但经Bonferroni校正后,这些关联均无统计学意义(P>0.000 2)。基因-环境交互作用的分析结果显示,14号染色体的ACTN1基因中rs743127位点与母亲孕期被动吸烟的交互作用具有统计学意义(P=0.000 1),母亲孕期无被动吸烟时携带一个该危险位点的患儿的OR值为0.59(95%CI:0.38-0.90),患儿母亲孕期中有被动吸烟情况时携带一个危险位点的患儿的OR值为2.00(95%CI:1.23-3.26)。而ACTN1基因的rs1475034、rs370535、rs2273419位点、CTNNB1基因的rs106871位点与被动吸烟和PVRL3基因的rs7634000、rs2971366、rs2634553、rs1489032、rs7624812位点与母亲孕期补充维生素的交互作用并无统计学意义(P>0.000 2)。结论:传递不平衡检验未发现所纳入的细胞黏附相关基因多态性与NSCL/P存在关联,但基因-环境交互作用分析结果提示,ACTN1基因可能通过基因-环境交互作用而影响NSCL/P的发病风险。
基金supported by the Research Project of Central Health Care Special Fund,China,No.W2017BJ52(to JZ)
文摘Early-and late-onset narcolepsy constitutes two distinct diagnostic subgroups.However,it is not clear whether symptomology and genetic risk factors differ between early-and late-onset narcoleptics.This study compared clinical data and single-nucleotide polymorphisms(SNPs)between early-and late-onset patients in a large cohort of 899 Han Chinese narcolepsy patients.Blood,cerebrospinal fluid,and clinical data were prospectively collected from patients,and patients were genotyped for 40 previously reported narcolepsy risk-conferring SNPs.Genetic risk scores(GRSs),associations of five different sets of SNPs(GRS1–GRS5)with early-and late-onset narcolepsy,were evaluated using logistic regression and receiver operating characteristic curves.Mean sleep latency was significantly shorter in early-onset cases than in late-onset cases.Symptom severity was greater among late-onset patients,with higher rates of sleep paralysis,hypnagogic hallucinations,health-related quality of life impairment,and concurrent presentation with four or more symptoms.Hypocretin levels did not differ significantly between early-and late-onset cases.Only rs3181077(CCR1/CCR3)and rs9274477(HLA-DQB1)were more prevalent among early-onset cases.Only GRS1(26 SNPs;OR=1.513,95%CI:0.893–2.585;P<0.05)and GRS5(6 SNPs;OR=1.893,95%CI:1.204–2.993;P<0.05)were associated with early-onset narcolepsy,with areas under the receiver operating characteristic curves of 0.731 and 0.732,respectively.Neither GRS1 nor GRS5 included SNPs in HLA regions.Our results indicate that symptomology and genetic risk factors differ between early-and late-onset narcolepsy.This protocol was approved by the Institutional Review Board(IRB)Panels on Medical Human Subjects at Peking University People’s Hospital,China(approval No.Yuanlunshenlinyi 86)in October 2011.
基金This work was supported by a grant from the National Natural Science Foundation of China （No.30771833）.
文摘Background Parkinson＇s disease （PD） is an autosomally inherited neurodegenerative disease in elderly people.The etiology of PD has long been thought to be associated with both genetic and environmental factors.To explore potential genetic risk factors for PD in the northern Han Chinese population,we investigated three single nucleotide polymorphisms （SNPs） （rs4538475,rs11107 and rs12564040） in the BST1,PARK15 and PARK9 genes.Methods Genomic DNA from 215 PD patients and 212 matched controls was amplified in two independent PCR systems and subsequently genotyped by digestion with the endonuclease Pstl.Genetic parameter and association studies were carried out with SPSS 13.0 and PLINK 1.07 software.Results We could accurately detect all genotypes in the three loci with the PCR-RFLP or mismatched PCR-RFLP techniques.The observed heterozygosities of the rs4538475 and rs11107 loci in PD and control groups ranged from 0.460-0.481 and 0.410-0.441,in BST1,PARK15 respectively,while we detected no heterozygosity at the rs12564040 locus in PARK9.The similar distributions of genotypic frequency between both groups suggest that the three SNPs investigated in this study are unlikely to play roles as common risk factors or pathogenic mutations for PD in northern Han Chinese.Conclusion The SNPs investigated in the BST1,PARK15 and PARK9 genes associated with PD susceptibility are not associated with PD in the northern Han Chinese population.
