Objective: To investigate the relationship between TIMP-1 gene polymorphisms and susceptibility of chronic periodontitis(CP) in Han Cantonese. Methods: Buccal swabs from 70 CP patients and 74 periodontal healthy controls were collected. DNA was extracted from these buccal swabs by using Chelex-100. TIMP-1 +372T/C (rs4898)、TIMP-1+533C/T (rs1062849) polymorphisms were tested by polymerase chain reaction - restriction fragment length polymorphism (PCR-RFLP). Allele distribution and genotypes frequencies in the patients and controls were analyzed. Results: Frequency variance of allele T and C at site of TIMP-1 +372 in patients and controls showed no statistical difference. TIMP-1+533C/T polymorphism of TIMP-1 hadn't been found in the present study. Conclusion: There is no relationship between TIMP-1 +372T/C polymorphism and susceptibility of chronic periodontitis, and TIMP-1 +533C/T polymorphism doesn' t exist among Han Cantonese.%目的:探讨基质金属蛋白酶组织抑制因子-1(TIMP-1)基因多态性与慢性牙周炎易感性的相关性.方法:从广东汉族人群中收集70例慢性牙周炎(CP)患者及74 例牙周健康对照者的颊黏膜拭子,以Chelex-100法提取DNA,采用聚合酶链反应-限制性片段长度多态方法对TIMP-1 +372T/C(rs4898)、TIMP-1 +533C/T (rs1062849)多态性进行检测, χ2检验分析组间等位基因分布和基因型频率的差异.结果:TIMP-1 +372位C、T等位基因在CP组和对照组的分布差异无统计学意义(P=0.897,OR=1.062).TIMP-1 +533C/T多态性未检出.结论:TIMP-1 +372T/C多态性与中国广东汉族人慢性牙周炎的患病易感性无关,且该人群中不存在TIMP-1 +533C/T多态性.
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