CYP2C19基因多态性与氯吡格雷ADP抑制率的关系
2018-12-21丁鸭锁尹春高广忠鲁峻张勤孙兵
丁鸭锁 尹春 高广忠 鲁峻 张勤 孙兵
[摘要] 目的 探討CYP2C19基因多态性与氯吡咯雷二磷酸腺苷(ADP)抑制率之间的关系。 方法 选取南通大学附属泰州市人民医院神经外科2014年7月~2017年7月颅内宽颈动脉瘤并行支架辅助弹簧圈栓塞的患者63例,均行常规双抗治疗,为阿司匹林100 mg及氯吡格雷75 mg每天口服。利用专用试剂盒测定CYP2C19基因型。本试验中共检测6种亚型(CYP2C19*1/*1(636GG,681GG),CYP2C19*1/*2(636GG,681GA),CYP2C19*2/*2(636GG,681AA),CYP2C19*1/*3(636GA,681GG),CYP2C19*2/*3(636GA,681GA),CYP2C19*3/*3(636AA,681GG)。将6种CYP2C19基因亚型分为快代谢组[CYP2C19*1/*1(636GG,681GG)]、中快代谢组[CYP2C19*1/*2(636GG,681GA),CYP2C19*1/*3(636GA,681GG)]和慢代谢组[CYP2C19*2/*2(636GG,681AA),CYP2C19*2/*3(636GA,681GA),CYP2C19*3/*3(636AA,681GG)]。利用双抗血小板图测定氯吡格雷对血小板的抑制率(ADP抑制率)。 结果 6种CYP2C19基因亚型中,CYP2C19*1/*1和CYP2C19*1/*2为主要基因型,占比分别为63.5%和19.0%。其中快代谢组有40例(63.5%),中快代谢组12例(19.0%)及慢代谢组11例(17.5%);将快代谢组与慢代谢组两组ADP抑制率进行比较,差异无统计学意义(P > 0.05)。 结论 通过检测CYP2C19基因型来调整宽颈动脉瘤支架术后的患者氯吡格雷的用量,意义不大,需要通过其他的指标来监测血小板的抑制情况。
[关键词] CYP2C19基因;氯吡格雷;二磷酸腺苷抑制率
[中图分类号] R541.4 [文献标识码] A [文章编号] 1673-7210(2018)09(b)-0018-04
[Abstract] Objective To explore the relationship between CYP2C19 Genetic Polymorphism and Clopidogrel in antiplatelet. Methods A total of 63 wide-necked intracranial aneurysm patients after stent-assist coiling embolization in the Neurosurgery Department of Jiangsu Taizhou People's Hospital of Nantong University were included in the study who took Clopidogrel (75 mg/d) and Aspirin (100 mg/d) orally. Gene chip kits were applied to test CYP2C19 gene types. In this research, six gene sub-types were tested(CYP2C19*1/*1 (636GG, 681GG), CYP2C19*1/*2 (636GG, 681GA), CYP2C19*2/*2 (636GG, 681AA), CYP2C19*1/*3 (636GA, 681GG), CYP2C19*2/*3 (636GA, 681GA), CYP2C19*3/*3 (636AA, 681GG). And they were divided into three subgroups based on the metabolic rate. CYP2C19*1/*1 (636GG, 681GG) was in the rapid subgroup. CYP2C19*1/*2 (636GG, 681GA) and CYP2C19*1/*3 (636GA, 681GG) were in the moderate subgroup. CYP2C19*2/*2 (636GG, 681AA), CYP2C19*2/*3 (636GA, 681GA) and CYP2C19*3/*3 (636AA, 681GG) were in the slow subgroup. Thrombelastograms were used to test the inhibition rate of platelet. Results CYP2C19*1/*1 and CYP2C19*1/*2 were the main gene sub-types, occupied 63.5% and 19.0% separately. There were 40 cases in rapid subgroup(63.5%), 12 cases in moderate subgroup (19.0%) and 11 cases in slow subgroup (17.5%). There was no statistical difference in the inhibition rate of ADP between rapid subgroup and slow subgroup (P > 0.05). Conclusion It is of little significance to adjust the amount of Clopidogrel in patients with wide-necked aneurysm stent after detecting genetype. Other indicators are needed to monitor the inhibition of plateles.
[Key words] CYP2C19 genetype; Clopidogrel; Inhibition of ADP
介入栓塞术已成为颅内动脉瘤的重要治疗手段,对于宽颈动脉瘤,除了使用弹簧圈栓塞外,往往需要支架辅助。目前常用的抗血小板方案是氯吡格雷加阿司匹林的双抗疗法。然而,氯吡格雷的抗血小板作用存在一定的个体差异,部分患者存在氯吡格雷抵抗现象,这部分人群会出现较高概率的血栓事件。发生氯吡格雷抵抗的原因有多种,基因多态性被认为是重要因素。由于从基因型到最终的蛋白表达,有多个调控环节参与其中,基因型是否和最终的血小板抵抗现象存在某种对应关系目前尚无定论,本研究将针对这个问题进行探讨。……p>
