Objective： Nonsyndromic cleft lip with or without cleft palate（NSCL/P） is a common birth defect with unclear etiology. Both genetic and environmental factors may contribute to NSCL/P. Many genes have been identifie...Objective： Nonsyndromic cleft lip with or without cleft palate（NSCL/P） is a common birth defect with unclear etiology. Both genetic and environmental factors may contribute to NSCL/P. Many genes have been identified as candidate genes associated with this disease. Interferon regulatory factor 6（IRF6） gene and transforming growth factor-a（TGFA） gene seem to be crucial in the predisposition of NSCL/ P. Here we evaluated some single nucleotide polymorphisms（SNPs） loci of TGFA and IRF6 genes in Chinese nuclear families consisting of fathers, mothers and affected offspring with NSCL/P. Methods：Fifty patients of NSCL/P were confirmed by the plastic surgeons. They and their parents were included in the study, all with the informed consents. SNPs loci of TGFA and IRF6 genes were analyzed by microarray technology. Some PCR products were randomly chosen and sequenced to check microarray results. The distribution of gene type and allele frequency between patient group and parents group were compared. Then a Haplotype Relative Risk（HRR） and Transmission Disequilibrium Test（TDT） were performed. Results：The sequences of randomly selected PCR products were all consistent with the microarray results. All loci were in Hardy-Weinberg equilibrium. There were no significant differences in the distribution of genotypes and alleles between patients and their parents. Using HRR and TDT analyses the V274I of IRF6 was associated with NSCL/P, while another SNP locus oflRF6 was not. Strong evidence of linkage disequilibrium was found between the 2 SNP loci of TGFA and disease with the HRR analysis, but not with the TDT analysis. Conclusion：Our study confirms the contribution of IRF6 in the etiology of NSCL/P in populations of Asian ancestry. The association of TGFA with NSCL/P requires further research.展开更多
Objectives To identify the loci involved in nonsyndromic cleft lip with or without cleft palate （NSCL/P） in Northern Chinese people in Shenyang by using genomewide and interaction linkage scan.Methods Two multiplex ...Objectives To identify the loci involved in nonsyndromic cleft lip with or without cleft palate （NSCL/P） in Northern Chinese people in Shenyang by using genomewide and interaction linkage scan.Methods Two multiplex families in Shenyang from North China were ascertained through probands with NSCL/P.Blood of every member was drawn for DNA extraction and analysis.Genotypes were available for 382 autosomal short tandem repeat （STR） markers from the ABI Prism Linkage Mapping Set version 2.5.Linkage between markers and NSCL/P was assessed by 2-point parametric LOD scores,multipoint heterogeneity parametric LOD scores （HLODs）,and multipoint nonparametric linkage score （NPL）.Results The initial scan suggested linkage on Chromosomes 1,2,and 15.In subsequent fine mapping,1q32-q42 showed a maximum multipoint LOD score of 1.9（empirical P=0.013） and an NPL score of 2.35 （empirical P=0.053）.For 2p24-p25,the multipoint NPL increased to 2.94 （empirical P=0.007）.2-locus interaction analysis obtained a maximum NPL score of 3.73 （P=0.00078） and a maximum LOD score of 3 for Chromosome 1 （at 221 cM） and Chromosome 2 （at 29 cM）.Conclusion Both parametric and nonparametric linkage scores greatly increased over the initial linkage scores on 1q32-q42,suggesting a susceptibility locus in this region.Nonparametric linkage gave a strong evidence for a candidate region on chromosome 2p24-p25.The superiority of 2-locus linkage scores compared to single-locus scores gave additional evidence for linkage on 1q32-q42 and 2p24-p25,and suggested that certain genes in the two regions may contribute to NCSL/P risks with interaction.展开更多
In this study, we sought to determine the association between environmental factors and nonsyndromic cleft of the lip and/or palate （NSCLP） to understand the etiology of the disease. A total of 200 NSCLP cases and 3...In this study, we sought to determine the association between environmental factors and nonsyndromic cleft of the lip and/or palate （NSCLP） to understand the etiology of the disease. A total of 200 NSCLP cases and 327 controls were recruited at the Maternal and Child Health Hospital of Xuzhou City. We conducted face-to-face interviews with the mothers of both cases and controls. The factors increasing the risk of NSCLP were a positive family history [odds ratio （OR）=56.74], pesticide exposure （OR=8.90）, and indoor decoration pollution （OR= 4.32）. On the other hand, the factors decreasing the risk of NSCLP were a high education level （OR=0.22） and supplementation of folic acid （OR=0.23） and multivitamins （OR=0.16）. Positive family history, pesticide exposure, and indoor decoration pollution are associated with the risk of NSCLP. In contrast, high education level and folic acid and multivitamin supplementation are protective factors against NSCLP.展开更多
Objective Convincing evidence suggests a link between increased risk of nonsyndromic cleft lip with or without cleft palate （NSCL/P） and low intake of folic acid by the mother during pregnancy. The present study was...Objective Convincing evidence suggests a link between increased risk of nonsyndromic cleft lip with or without cleft palate （NSCL/P） and low intake of folic acid by the mother during pregnancy. The present study was designed to explore if genetic variation in the betaine‐homocysteine methyltransferase （BHMT） gene contributes to NSCL/P. Methods DNA was obtained from 166 individuals with NSCL/P and 285 healthy subjects. Three known single nucleotide polymorphisms （SNPs） present in the BHMT gene （rs651852, rs3797546, and rs3733890） were investigated by real‐time PCR‐based TaqMan genotyping. Results Neither allelic nor genotypic association was found between NSCL/P and SNPs rs651852 and rs3733890. SNP rs3797546 did not show allelic association with NSCL/P; however, a higher proportion of NSCL/P patients carry the CC genotype compared with the TT＋CT genotype （P=0.020, OR=2.10, 95% CI=1.11‐3.95）. Conclusion Our study suggests that polymorphism rs3797546 in the BHMT gene may confer genetic risk of NSCL/P in a recessive manner.展开更多
目的:分析p53基因单核苷酸多态性(SNPs)位点的多态性,探究云南汉族非综合征性唇腭裂与p53基因的相关性。方法:选取2016年1月-2018年12月于笔者医院就诊的非综合征性唇腭裂患儿100例为试验组,选取医院同期无先天性畸形正常患儿100例为对...目的:分析p53基因单核苷酸多态性(SNPs)位点的多态性,探究云南汉族非综合征性唇腭裂与p53基因的相关性。方法:选取2016年1月-2018年12月于笔者医院就诊的非综合征性唇腭裂患儿100例为试验组,选取医院同期无先天性畸形正常患儿100例为对照组。采用Taqman探针荧光定量PCR法对p53基因的SNPs位点rs12947788和rs1042522进行基因分型,并用χ^2检验和Logistic回归分析多态位点与非综合征性唇腭裂的相关性。结果:p53的基因SNPs位点rs12947788的等位基因变体A携带者(AA+GA vs GG)发生非综合征性唇腭裂的风险增加(OR=1.393,95%CI 1.030~1.884,P=0.032)。rs1042522(CC vs CG+GG)增加吸烟者母亲生下NSCL/P患儿的风险(OR=2.561,95%CI=1.146~5.721,P=0.022)。rs12947788(AA+GA vs GG)可明显增加有饮酒史母亲(OR=3.235,95%CI=1.158~9.040,P=0.025)生下NSCL/P患儿的风险。结论:云南汉族人群非综合征性唇腭裂与p53基因rs1042522、rs12947788多态具有一定的相关性。展开更多
目的:探讨TGFα基因和TGFβ3基因多态性与国人非综合征型唇腭裂发生的关系。方法:取56例非综合征型唇腭裂(nonsyndromic cleft lip with or without palate, NSCLP)、26例单发性腭裂(cleft palate only, CPO)及28例单纯颌骨骨折患者的全...目的:探讨TGFα基因和TGFβ3基因多态性与国人非综合征型唇腭裂发生的关系。方法:取56例非综合征型唇腭裂(nonsyndromic cleft lip with or without palate, NSCLP)、26例单发性腭裂(cleft palate only, CPO)及28例单纯颌骨骨折患者的全血DNA,于TGFα基因3′端未翻译区序列(3′untranslated re-gion,3′UTR)及TGFβ3第5外显子(5th exon)序列设计引物,PCR法扩增目的片段,单链构像多态性技术分析等位基因及基因型频率在各组之间分布的差异。将目的片段克隆、测序寻找其多态位点。结果:56例NSCLP、26例CPO和28例对照组全血中均扩增出345 bp TGFα和193 bp TGFβ3目的片段。共发现TGFα3种等位基因A1、A2和A3及TGFβ3 2种等位基因B1和B2。各等位基因及基因型频数在NSCLP、CPO和对照组之间无统计学差异。测序表明TGFα存在3处多态位点和TGFβ3存在1处多态位点。结论:TGFα及TGFβ3基因多态性与我国汉族人NSCLP和CPO的发病无显著相关。展开更多
目的:研究染色体8q24区段的rs987525位点及MAFB基因的rs13041247位点单核苷酸多态性(single nucleotide polymorphism,SNP)与非综合征型唇腭裂(nonsyndromic cleft lip with or without cleft palate,NSCL/P)的相关性。方法:收集宁夏地...目的:研究染色体8q24区段的rs987525位点及MAFB基因的rs13041247位点单核苷酸多态性(single nucleotide polymorphism,SNP)与非综合征型唇腭裂(nonsyndromic cleft lip with or without cleft palate,NSCL/P)的相关性。方法:收集宁夏地区病例组非综合征型唇腭裂患儿369例,患儿父亲303例,母亲311例,完整3人核心家系158个。对照组收集在校正常大学生433例。采用聚合酶链反应-限制性片段长度多态性(polymerase chain reaction-restriction fragment length polymorphism,PCR-RFLP)的方法检测这2个SNPs的基因型,运用卡方检验,传递不平衡检验(transmission disequilibrium test,TDT)等统计学方法分析评价以上SNPs的基因型频率和等位基因频率在患儿,患儿父母及对照组人群中的分布,评价其与NSCL/P的关联。结果:病例对照研究发现:MAFB基因的rs13041247位点在本研究人群的单纯唇裂组及唇裂伴或不伴腭裂组中基因型与等位基因频率与对照组比较存在统计学差异(P=0.02,P=0.04,P=0.01,P=0.04),而在单纯腭裂组中不存在统计学差异(P=0.25,P=0.51)。染色体8q24区域的rs987525位点基因型与等位基因频率与对照组比较差异无统计学意义(P=0.07,P=0.20,P=0.58,P=0.33,P=0.35,P=0.59)。TDT发现rs13041247位点C等位基因在单纯唇裂组中存在过传递(P=0.03),rs987525位点A等位基因在唇裂,腭裂及唇裂伴或不伴腭裂组中存在过传递(P=0.00,P=0.04,P=0.00)。结论:MAFB的rs13041247位点单核苷酸多态性与非综合征型唇腭裂有关。展开更多
非综合征性唇腭裂(nonsyndromic cleft of lip with or without palate,NSCL/P)是新生儿颌面部最常见的先天性出生缺陷之一,与遗传因素和多种环境有关。叶酸缺乏、代谢紊乱及介导其代谢的关键酶基因的多态性可能是导致NSCL/P的重要因素...非综合征性唇腭裂(nonsyndromic cleft of lip with or without palate,NSCL/P)是新生儿颌面部最常见的先天性出生缺陷之一,与遗传因素和多种环境有关。叶酸缺乏、代谢紊乱及介导其代谢的关键酶基因的多态性可能是导致NSCL/P的重要因素,母体孕期摄入叶酸可降低NSCL/P的患病风险。本文就叶酸代谢及介导其代谢的关键酶基因的多态性与NSCL/P的相关性进行综述。展开更多
基金supported by the Medical Technology Development Foundation of Jiangsu Provincial Health Bureau of China (H200513)Changjiang Scholars and Innovative Research Team in University (IRT0631) and National 973 Program(2006CB944005)
文摘Objective： Nonsyndromic cleft lip with or without cleft palate（NSCL/P） is a common birth defect with unclear etiology. Both genetic and environmental factors may contribute to NSCL/P. Many genes have been identified as candidate genes associated with this disease. Interferon regulatory factor 6（IRF6） gene and transforming growth factor-a（TGFA） gene seem to be crucial in the predisposition of NSCL/ P. Here we evaluated some single nucleotide polymorphisms（SNPs） loci of TGFA and IRF6 genes in Chinese nuclear families consisting of fathers, mothers and affected offspring with NSCL/P. Methods：Fifty patients of NSCL/P were confirmed by the plastic surgeons. They and their parents were included in the study, all with the informed consents. SNPs loci of TGFA and IRF6 genes were analyzed by microarray technology. Some PCR products were randomly chosen and sequenced to check microarray results. The distribution of gene type and allele frequency between patient group and parents group were compared. Then a Haplotype Relative Risk（HRR） and Transmission Disequilibrium Test（TDT） were performed. Results：The sequences of randomly selected PCR products were all consistent with the microarray results. All loci were in Hardy-Weinberg equilibrium. There were no significant differences in the distribution of genotypes and alleles between patients and their parents. Using HRR and TDT analyses the V274I of IRF6 was associated with NSCL/P, while another SNP locus oflRF6 was not. Strong evidence of linkage disequilibrium was found between the 2 SNP loci of TGFA and disease with the HRR analysis, but not with the TDT analysis. Conclusion：Our study confirms the contribution of IRF6 in the etiology of NSCL/P in populations of Asian ancestry. The association of TGFA with NSCL/P requires further research.
基金supported by National Natural Science Foundation of China (the research to identify susceptibility genes of nonsyndromic cleft lip and/or palates, 30600676)Program for New Century Excellent Talents of the Ministry of Education of China (NCET-07-0034)
文摘Objectives To identify the loci involved in nonsyndromic cleft lip with or without cleft palate （NSCL/P） in Northern Chinese people in Shenyang by using genomewide and interaction linkage scan.Methods Two multiplex families in Shenyang from North China were ascertained through probands with NSCL/P.Blood of every member was drawn for DNA extraction and analysis.Genotypes were available for 382 autosomal short tandem repeat （STR） markers from the ABI Prism Linkage Mapping Set version 2.5.Linkage between markers and NSCL/P was assessed by 2-point parametric LOD scores,multipoint heterogeneity parametric LOD scores （HLODs）,and multipoint nonparametric linkage score （NPL）.Results The initial scan suggested linkage on Chromosomes 1,2,and 15.In subsequent fine mapping,1q32-q42 showed a maximum multipoint LOD score of 1.9（empirical P=0.013） and an NPL score of 2.35 （empirical P=0.053）.For 2p24-p25,the multipoint NPL increased to 2.94 （empirical P=0.007）.2-locus interaction analysis obtained a maximum NPL score of 3.73 （P=0.00078） and a maximum LOD score of 3 for Chromosome 1 （at 221 cM） and Chromosome 2 （at 29 cM）.Conclusion Both parametric and nonparametric linkage scores greatly increased over the initial linkage scores on 1q32-q42,suggesting a susceptibility locus in this region.Nonparametric linkage gave a strong evidence for a candidate region on chromosome 2p24-p25.The superiority of 2-locus linkage scores compared to single-locus scores gave additional evidence for linkage on 1q32-q42 and 2p24-p25,and suggested that certain genes in the two regions may contribute to NCSL/P risks with interaction.
基金supported by the National Natural Science Foundations of China(No.81273103)the Priority Academic Program Development of Jiangsu Higher Education Institutions(PAPD)
文摘In this study, we sought to determine the association between environmental factors and nonsyndromic cleft of the lip and/or palate （NSCLP） to understand the etiology of the disease. A total of 200 NSCLP cases and 327 controls were recruited at the Maternal and Child Health Hospital of Xuzhou City. We conducted face-to-face interviews with the mothers of both cases and controls. The factors increasing the risk of NSCLP were a positive family history [odds ratio （OR）=56.74], pesticide exposure （OR=8.90）, and indoor decoration pollution （OR= 4.32）. On the other hand, the factors decreasing the risk of NSCLP were a high education level （OR=0.22） and supplementation of folic acid （OR=0.23） and multivitamins （OR=0.16）. Positive family history, pesticide exposure, and indoor decoration pollution are associated with the risk of NSCLP. In contrast, high education level and folic acid and multivitamin supplementation are protective factors against NSCLP.
基金supported by the National Natural Science Foundation of China (grant number 307009907)Beijing Natural Science Foundation (grant number 7082038)Beijing Foundation for Excellent Elite (grant number 2010D003034000013)
文摘Objective Convincing evidence suggests a link between increased risk of nonsyndromic cleft lip with or without cleft palate （NSCL/P） and low intake of folic acid by the mother during pregnancy. The present study was designed to explore if genetic variation in the betaine‐homocysteine methyltransferase （BHMT） gene contributes to NSCL/P. Methods DNA was obtained from 166 individuals with NSCL/P and 285 healthy subjects. Three known single nucleotide polymorphisms （SNPs） present in the BHMT gene （rs651852, rs3797546, and rs3733890） were investigated by real‐time PCR‐based TaqMan genotyping. Results Neither allelic nor genotypic association was found between NSCL/P and SNPs rs651852 and rs3733890. SNP rs3797546 did not show allelic association with NSCL/P; however, a higher proportion of NSCL/P patients carry the CC genotype compared with the TT＋CT genotype （P=0.020, OR=2.10, 95% CI=1.11‐3.95）. Conclusion Our study suggests that polymorphism rs3797546 in the BHMT gene may confer genetic risk of NSCL/P in a recessive manner.
文摘目的:分析p53基因单核苷酸多态性(SNPs)位点的多态性,探究云南汉族非综合征性唇腭裂与p53基因的相关性。方法:选取2016年1月-2018年12月于笔者医院就诊的非综合征性唇腭裂患儿100例为试验组,选取医院同期无先天性畸形正常患儿100例为对照组。采用Taqman探针荧光定量PCR法对p53基因的SNPs位点rs12947788和rs1042522进行基因分型,并用χ^2检验和Logistic回归分析多态位点与非综合征性唇腭裂的相关性。结果:p53的基因SNPs位点rs12947788的等位基因变体A携带者(AA+GA vs GG)发生非综合征性唇腭裂的风险增加(OR=1.393,95%CI 1.030~1.884,P=0.032)。rs1042522(CC vs CG+GG)增加吸烟者母亲生下NSCL/P患儿的风险(OR=2.561,95%CI=1.146~5.721,P=0.022)。rs12947788(AA+GA vs GG)可明显增加有饮酒史母亲(OR=3.235,95%CI=1.158~9.040,P=0.025)生下NSCL/P患儿的风险。结论:云南汉族人群非综合征性唇腭裂与p53基因rs1042522、rs12947788多态具有一定的相关性。
文摘目的:探讨TGFα基因和TGFβ3基因多态性与国人非综合征型唇腭裂发生的关系。方法:取56例非综合征型唇腭裂(nonsyndromic cleft lip with or without palate, NSCLP)、26例单发性腭裂(cleft palate only, CPO)及28例单纯颌骨骨折患者的全血DNA,于TGFα基因3′端未翻译区序列(3′untranslated re-gion,3′UTR)及TGFβ3第5外显子(5th exon)序列设计引物,PCR法扩增目的片段,单链构像多态性技术分析等位基因及基因型频率在各组之间分布的差异。将目的片段克隆、测序寻找其多态位点。结果:56例NSCLP、26例CPO和28例对照组全血中均扩增出345 bp TGFα和193 bp TGFβ3目的片段。共发现TGFα3种等位基因A1、A2和A3及TGFβ3 2种等位基因B1和B2。各等位基因及基因型频数在NSCLP、CPO和对照组之间无统计学差异。测序表明TGFα存在3处多态位点和TGFβ3存在1处多态位点。结论:TGFα及TGFβ3基因多态性与我国汉族人NSCLP和CPO的发病无显著相关。
文摘目的:研究染色体8q24区段的rs987525位点及MAFB基因的rs13041247位点单核苷酸多态性(single nucleotide polymorphism,SNP)与非综合征型唇腭裂(nonsyndromic cleft lip with or without cleft palate,NSCL/P)的相关性。方法:收集宁夏地区病例组非综合征型唇腭裂患儿369例,患儿父亲303例,母亲311例,完整3人核心家系158个。对照组收集在校正常大学生433例。采用聚合酶链反应-限制性片段长度多态性(polymerase chain reaction-restriction fragment length polymorphism,PCR-RFLP)的方法检测这2个SNPs的基因型,运用卡方检验,传递不平衡检验(transmission disequilibrium test,TDT)等统计学方法分析评价以上SNPs的基因型频率和等位基因频率在患儿,患儿父母及对照组人群中的分布,评价其与NSCL/P的关联。结果:病例对照研究发现:MAFB基因的rs13041247位点在本研究人群的单纯唇裂组及唇裂伴或不伴腭裂组中基因型与等位基因频率与对照组比较存在统计学差异(P=0.02,P=0.04,P=0.01,P=0.04),而在单纯腭裂组中不存在统计学差异(P=0.25,P=0.51)。染色体8q24区域的rs987525位点基因型与等位基因频率与对照组比较差异无统计学意义(P=0.07,P=0.20,P=0.58,P=0.33,P=0.35,P=0.59)。TDT发现rs13041247位点C等位基因在单纯唇裂组中存在过传递(P=0.03),rs987525位点A等位基因在唇裂,腭裂及唇裂伴或不伴腭裂组中存在过传递(P=0.00,P=0.04,P=0.00)。结论:MAFB的rs13041247位点单核苷酸多态性与非综合征型唇腭裂有关。
文摘非综合征性唇腭裂(nonsyndromic cleft of lip with or without palate,NSCL/P)是新生儿颌面部最常见的先天性出生缺陷之一,与遗传因素和多种环境有关。叶酸缺乏、代谢紊乱及介导其代谢的关键酶基因的多态性可能是导致NSCL/P的重要因素,母体孕期摄入叶酸可降低NSCL/P的患病风险。本文就叶酸代谢及介导其代谢的关键酶基因的多态性与NSCL/P的相关性进行综述。
