青少年暴力行为与多巴胺β羟化酶基因多态性的关联分析

Association between polymorphism of dopamine-β-hydroxylase genes and violent behavior in adolescents

目的探讨青少年暴力行为与多巴胺β羟化酶(DβH)基因rs1611115和rs739398多态性的关系。方法将新入少教所的男性服教人员分为暴力组(107例)和非暴力组(107例),另以107例职高男生作对照组,利用SNaPshot单核苷酸多态性(SNP)分型技术对3组进行多态性的基因分型,并比较3组各基因型及等位基因频率分布差异。结果 3组在DβH基因rs1611115位点基因型及基因频率差异均有统计学意义(P<0.05);两两比较显示暴力组与非暴力组在rs1611115位点基因型和等位基因频率差异无统计学意义(P>0.05);与对照组比较差异均有统计学意义(P<0.01)。3组在DβH基因rs739398位点基因型和基因频率差异无统计学意义(P>0.05)。两两比较差异也均无统计学意义(P>0.05)。结论暴力、非暴力犯罪与DβH基因rs1611115多态性均存在关联,未发现与DβH基因rs739398多态性与之存在关联。

Objective To explore the relationship between the rs1611115 and rs739398 polymorphism of dopamine-β-hydroxy-lase genes and violent behavior in adolescents .Methods Adolescent male offenders were divided into violent group （107 samples） and nonviolent group （107 samples） .Besides ,107 male adolescents in vocational school were served as normal controls .The rs1611115 and rs739398 polymorphisms of DβH gene were measured by used SNaPshot SNP technology in 321 samples .Chi-square test was used to compare the distribution difference between three groups of each gene type and the allele frequency distribution . Results There was statistically significant difference among violent group ,nonviolent group and normal control group in the geno-type and allele frequencies of DβH gene rs1611115 polymorphism（P〈0 .05） ,but there was no statistically significant difference be-tween violent group and nonviolent group（P〉0 .05） .There was no statistically significant difference among violent group ,nonvio-lent group and normal control group in the genotype and allele frequencies of rs739398 polymorphism（P〉0 .05） .Conclusion No association was found between the rs739398 polymorphism of DβH gene and adolescents with violent behavior .But the rs1611115 polymorphism of DβH gene was related to adolescent criminals with violent and nonviolent behavior .