中国汉族人群Ghrelin基因单核苷酸多态性与精神分裂症关联研究

目的 探讨Ghrelin(GHRL)基因单核甘酸多态性与精神分裂症的关联.方法 纳入634例精神分裂症患者和606例健康对照,采用限制性片段长度多态性和聚合酶链反应技术检测GHRL基因4个SNP位点rs696217、rs26802、rs27647和rs26311基因型.结果 GHRL基因4个单核甘酸多态位点基因型和等位基因频率在病例组和对照组中的分布差异均无显著性(基因型频率P值分别为0.649,0.944,0.410,0.826;等位基因频率P值分别为0.773,0.992,0.301,0.723).而病例组与对照组的单体型(rs696217-rs26802--rs27647-rs26311))分析:GAAG、GAGC、GAGC、GCGG、GCGG、TAGC、TAGG单体型频率的差异均存在显著性(P值分别为0.011,0.001,1.76×10-6,9.84×10-10,1.38×10-9,2.12×10-5,2.57×10-6).结论 GHRL基因可能不是精神分裂症的易感基因,但GA单体型可能是精神分裂症的易感因素.

Abstract：

Objective To investigate the potential association of Ghrelin(GHRL)gene polymorphisms susceptible to schizophrenia by case-control study.Methods Six hundred and thirty-four patients,six hundred and six healthy control subjects were recruited.Four SNPs rs696217,rs26802,rs27647 and rs26311 were detected by the polymerase chain reaction-based-restriction fragment length polymorphism analysis.Results No significant differences in genotype or allele frequencies of the four SNPs were observed between schizophrenic patients and healthy controls (Pvalues of genotype frequencies were 0.649,0.944,0.410,0.826;P values of allele frequencies were 0.773,0.992,0.301,0.723).However,seven haplotypes(GAAG,GAGC,GAGG,GCGC,GCGG,TAGC,TAGG)showed significant differences in frequency between schizophrenic and control groups(P values were 0.011,0.001,1.76×10-6,9.84×10-10,1.38×10-9,2.12×10-5,2.57×10-6).Conclusion These data suggest that the GHRL gene may not be associated with susceptibility to schizophrenia in the Chinese Han population.However,the haplotype of GA may be the susceptive factor of schizophrenia.

The association study of Ghrelin gene polymorphisms with the susceptivity of schizophrenia in Chinese Han population

Objective To investigate the potential association of Ghrelin(GHRL)gene polymorphisms susceptible to schizophrenia by case-control study.Methods Six hundred and thirty-four patients,six hundred and six healthy control subjects were recruited.Four SNPs rs696217,rs26802,rs27647 and rs26311 were detected by the polymerase chain reaction-based-restriction fragment length polymorphism analysis.Results No significant differences in genotype or allele frequencies of the four SNPs were observed between schizophrenic patients and healthy controls (Pvalues of genotype frequencies were 0.649,0.944,0.410,0.826;P values of allele frequencies were 0.773,0.992,0.301,0.723).However,seven haplotypes(GAAG,GAGC,GAGG,GCGC,GCGG,TAGC,TAGG)showed significant differences in frequency between schizophrenic and control groups(P values were 0.011,0.001,1.76×10-6,9.84×10-10,1.38×10-9,2.12×10-5,2.57×10-6).Conclusion These data suggest that the GHRL gene may not be associated with susceptibility to schizophrenia in the Chinese Han population.However,the haplotype of GA may be the susceptive factor of schizophrenia.