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基于家庭的原发ANCA相关性小血管炎与TGFβ1-509C/T及TCRCα-575A/G的相关性 被引量:2

Association study of TGFβ1-509 C/T and TCRCα-575 A/G polymorphisms with primary ANCA associated vasculitis in family
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摘要 目的 以家庭为基础,利用传递不平衡原理研究TGFβ1-509C/T及TCRCα-575A/G的SNP与AAV的相关关系。方法 采用PCR—RFLP和直接测序法,鉴定88例原发AAV患者及其父母、兄弟姐妹基因型,获得88个核心家庭中264人的基因型,采用传递不平衡检验和HRR分析的方法观察TGFβ1-509C/T及TCRCα-575A/G在患病子代的不平衡传递。结果32个满足TGFβ1—509C/T的传递不平衡检验的AAV患者核心家庭中,杂合子父母传递给患病子代的等位基因频率为C/T=36/28,期望值为C/T=33.5/30.5,两者相比,差异无统计学意义(X^2=0.51,P〉0.05);34个满足TCRCα-575A/G的传递不平衡检验的AAV患者核心家庭中,杂合子父母传递给患病子代的等位基因频率为A/G=29/39,期望值为A/G=33.5/34.5,两者相比,差异无统计学意义(X^2=1.59,P〉0.05)。38个满足HRR分析的AAV患者核心家庭中,TGFβ1—509C/T多态性传递的基因型为CC/CT/IT=12/20/6,等位基因为C/T=44/32,未传递基因型为CC/CT/TT=10/19/9,等位基因为C/T=39/37,两者基因型、等位基因相比,差异均无统计学意义(基因型和单体型Ⅳ。值分别为0.81、0.66,P均〉0.05),HRR=1.30,HRR系数未过度偏离(1.00);39个满足TCRCcL-575A/G的HRR分析的核心家庭中,TCRCα-575A/G多态性传递的基因型为AA/AG/GG=9/18/12,等位基因为A/G=36/42,未传递的基因型为AA/AG/GG=15/15/9,等位基因为A/G=35/33,两者基因型、等位基因相比,差异均无统计学意义(基因型和等位基因,值分别为2.20、0.41,P均〉0.05),HRR=0.81,HRR系数未过度偏离(1.00)。结论广西汉族人群中,TGFl31—509C/T及TCRCα-575A/G可能与原发AAV的遗传易感性不相关。 Objective To investigate the relationship between TGFβ1-509 C/T, TCRCα-575 A/G SNPs and primary AAV using a transmission disequilibrium theory based pedigree analysis. Methods Genotypes of 264 individuals from 88 AAV families include patients, their parents, brothers and sisters were determined by PCR-RFLP and direct sequencing. Transmission disequilibrium test (TDT) and HRR were employed for the data analysis to observe the transmission disequilibrium of TGFβ1-509 C/T and TCRCα -575 A/G polymorphisms. Results No transmission disequilibrium from heterozygous parents onto the patients was found in the trios analyzed by TDT for either TGFβ1-509 C/T ( observed C/T = 36/28, expeeted C/T = 33.5/30. 5, X^2 = 0. 51, P 〉 0.05) or TCRCoL-575 A/G ( observed A/G = 29/39, expected A/G = 33.5/ 34. 5, X2 = 1.59, P 〉 0. 05 ). The genotype-based HRR and haplotype-based HRR showed there was no increased risk of AAV in the observed trios for either -509 C/T polymorphism of TGFβ1 (transmitted genotype CC/CT/T'F = 12/20/6, allele C/T = 44/32; nontransmitted genotype CC/CT/TT = 10/19/9, allele C/T = 39/37, genotype-based HRRx^2 = 0. 81, P 〉 0. 05, haplotype-based HRRx^2 = 0. 66, P 〉 0. 05, HRR = 1.30) or -575 A/G polymorphism of TCRCα.( transmitted genotype AA/AG/GG = 9/18/12, allel A/ G = 36/42 ;nontransmitted genotype AA/AG/GG = 15/15/9, allel A/G = 35/33, genotype-based HRRx^2 = 2.20, P 〉0. 05. haplotype-based HRRx^2 =0. 41, P 〉0. 05, HRR =0. 81 ). The deviation of HRR coefficient was not excessive(1.00). Conclusion TGFβ1-509 C/T and TCRCα-575 A/G polymorphism may not be associated with the genetic suseeptibility of primary AAV in Guangxi Han population.
出处 《中华检验医学杂志》 CAS CSCD 北大核心 2011年第2期164-169,共6页 Chinese Journal of Laboratory Medicine
基金 广西科学基金资助项目(0728060) 广西医科大学校博士启动基金资助项目(308019)
关键词 ANCA相关性小血管炎 转化生长因子Β1 受体 抗原 T细胞 α—β 多态性 单核苷酸 疾病遗传易感性 Anti-neutrophil cytoplasmic antibody-associated vasculitis Transforming growthfactor beta 1 Receptors, antigen, T-cell, alpha-beta Polymorphism, single nncleotide Geneticpredisposition to disease
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