Objective: To comprehensively explore the relationship between proprotein convertase subtilisin/kexin type 9(PCSK9) gene polymorphism detection and the risk of acute ischemic stroke and the lipid-lowering effect of atorvastatin. Methods: A total of 119 patients with acute ischemic stroke(AIS) admitted to the Department of Neurology of our hospital from June 2018 to July 2020 were selected as research subjects, who received atorvastatin calcium tablets 20 mg once a day for 3 months. One hundred and twenty healthy subjects without heart and brain diseases during the same period were selected as control group. The distribution of PCSK9 genotype and allele was compared between the control group and the AIS group. And the levels of triglyceride(TG), total cholesterol(TC), high density lipoprotein cholesterol(HDL-C), low density lipoprotein cholesterol(LDL-C), apolipoprotein A1(ApoA1), apolipoprotein B(ApoB) and serum PCSK9 were compared between the two groups before and after treatment in patients with different rs562556 genotypes of AIS. Results: There were statistically significant differences in the genotype and allele distribution of SNP1(rs562556), SNP2(rs2479408) and SNP3(rs529787) between the control group and AIS group(P<0.05), and the allele frequencies of A and C in AIS group were higher than those in the control group(P<0.05). Multivariate Logistic regression analysis showed that rs562556 gene polymorphism distribution was all related to the risk of AIS(P<0.05). After treatment, the levels of TC, TG, LDL-C and ApoB in AIS patients with different rs562556 genotypes in the two groups were decreased compared with those before treatment, while serum PCSK9 levels were increased(P<0.05). In addition, the decrease degree of serum TC, TG, LDL-C levels and the increase degree of serum PCSK9 levels in AG+AA group after treatment were higher than those in GG group(P<0.05). Conclusion: The rs562556 dominant gene model(GG vs Ag+AA) can increase the risk of AIS in Han population, which may be an important factor affecting the lipid-lowering effect of atorvastatin in AIS patients. The serum PCSK9 level of patients carrying A allele is significantly increased after atorvastatin treatment, which has a certain negative effect on the lipid-lowering efficiency.
 李建桥.阿托伐他汀钙片强化降脂对缺血性脑卒中患者血脂水平和颈动脉粥样硬化斑块的影响研究[J]. 中国全科医学, 2020, 23(2):194-196.
 GLERUP S, SCHULZ R, LAUFS U, et al. Physiological and therapeutic regulation of PCSK9 activity in cardiovascular disease[J]. Basic Res Cardiol, 2017, 112(3):32.
 冯若男, 周华.PCSK9与动脉粥样硬化性心血管疾病的研究进展[J]. 中国动脉硬化杂志, 2020, 28(12):1095-1099.
 O'CONNELL E M, LOHOFF F W.Proprotein convertase subtilisin/kexin type 9(PCSK9) in the brain and relevance for neuropsychiatric disorders[J]. Front Neurosci, 2020, 14:609.
 姚雅洁, 蔡恒.PCSK9抑制剂Evolocumab与动脉粥样硬化性心血管疾病的研究进展[J]. 心血管病学进展, 2020, 41(12):1285-1289.
 张耀庭, 龙明智.前白蛋白转化酶枯草溶菌素9单克隆抗体调脂治疗的研究进展[J]. 中西医结合心脑血管病杂志, 2020, 18(3):442-445.
 张艳, 韩登峰, 张小宁.前蛋白转化酶枯草溶菌素9基因rs529787位点多态性与血脂和缺血性脑卒中的关系研究[J]. 中国全科医学, 2016, 19(7):803-807.
 高素颖, 颜应琳, 于凯, 等.急性缺血性脑卒中颈动脉粥样硬化的危险因素研究[J]. 中国全科医学, 2021, 24(3):327-332.
 杨秋.阿托伐他汀在急性缺血性脑卒中治疗中的应用效果分析[J]. 中国实用医药, 2021, 16(3):95-97.
 姜秀凤, 夏美玲.阿托伐他汀在急性缺血性脑卒中治疗中的应用分析[J]. 中国现代药物应用, 2020, 14(24):147-149.
 梁赋, 胡少敏, 黄达, 等.三种他汀类药物对大动脉粥样硬化型觉醒型卒中患者血脂及前蛋白转化酶枯草溶菌素9水平的影响[J]. 实用医院临床杂志, 2018, 15(5):177-179.
 DU Y, WANG S, CHEN Z, et al. Association of SLCO1B1 polymorphisms and atorvastatin safety and efficacy:a Meta-analysis[J]. Curr Pharm Des, 2018, 24(34):4044-4050.
 陆言巧, 沈兰, 何奔.PCSK9抑制剂的机制及其临床进展[J]. 临床心血管病杂志, 2020, 36(1):14-19.
 CHUAN J, QIAN Z, ZHANG Y, et al. The association of the PCSK9 rs562556 polymorphism with serum lipids level:a Meta-analysis[J]. Lipids Health Dis, 2019, 18(1):105.