白细胞介素-6及其受体基因多态性与中国西北人群慢性牙周炎的关联研究

被引:0
作者
张海英
机构
[1] 兰州大学
关键词
慢性牙周炎; 白细胞介素-6; 白细胞介素-6受体; 基因多态性;
D O I
暂无
年度学位
2011
学位类型
硕士
导师
摘要
目的:通过对慢性牙周炎患者以及健康对照组的外周血中白细胞介素-6及其受体基因多态性的检测,观察中国西北人群中上述基因与牙周炎易感性的关系,探讨慢性牙周炎发病的分子遗传机理。 方法:本实验采用病例-对照研究的方法,收集中国西北地区199例慢性牙周炎患者和216正常对照样本的外周血,采用苯酚-氯仿法提取DNA,然后应用聚合酶链式反应-限制性内切酶片段长度多态性(PCR-RFLP)检测白细胞介素-6及其受体基因多态性,采用卡方检验比较不同组之间基因型频率、等位基因频率的差异。 结果:研究结果表明,与正常对照相比IL.6-1363 GG基因型和G等位基因的频率在慢性牙周炎患者组中显著增加(p值分别是0.034和0.037),并且GG基因型和G等位基因提高了慢性牙周炎的患病风险(OR值和95%CI置信区间分别是2.436[1.048-5.665];2.367[1.030-5.435])。IL-6-1363 G/T & -572 G/C单倍型分析显示C/T单倍型与慢性牙周炎的易患风险有相关性(p=0.024). IL-6R+48892 A/C CC基因型是慢性牙周炎的保护因素(p=0.017,OR=0.493, 95%CI=[0.275-0.885])。IL-6R-183 G/A & +48892 A/C单倍型分析显示A/A和C/A单倍型与慢性牙周炎的易患风险有相关性(p值分别为0.0235和0.0002)。另外,IL-6R+48892 A/C基因多态性还与女性牙周炎患者显著相关(p值分别为0.020和0.043),而IL-6-572 G/C和IL-6R-183 G/A基因多态性与中国西北人群慢性牙周炎无显著相关性。 结论:研究结果表明IL-6-1363 G/T和IL-6R+48892 A/C多态性可能影响中国西北人群中慢性牙周炎的病理过程,而IL-6-572 G/C基因多态性的分布在不同人群和地区间具有一定差异。
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页数:45
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