检验医学 ›› 2024, Vol. 39 ›› Issue (7): 621-626.DOI: 10.3969/j.issn.1673-8640.2024.07.001

• 论著 •    下一篇

Lp-PLA2基因多态性与颈动脉斑块组织病理染色结果的相关性

刘亚东1, 杨磊2, 宋少婷1, 杜雄3, 刘强4, 孙建荣5()   

  1. 1.延安大学附属医院检验科,陕西 延安 716000
    2.延安大学附属医院急诊科,陕西 延安 716000
    3.延安大学附属医院病理科,陕西 延安 716000
    4.延安大学附属医院神经内科,陕西 延安 716000
    5.延安大学附属医院老年呼吸科,陕西 延安 716000
  • 收稿日期:2023-12-21 修回日期:2024-03-06 出版日期:2024-07-30 发布日期:2024-07-31
  • 通讯作者: 孙建荣,E-mail:769505260@qq.com
  • 作者简介:刘亚东,男,1988年生,学士,副主任技师,主要从事心脑血管疾病检验诊断工作。
  • 基金资助:
    陕西省教育厅专项科研计划项目(20JK0981);陕西省大学生创新创业训练计划项目(S202210719122);延安市科技计划项目(2022SLSFGG-057);延安市临床生化检验报告自动审核系统建立科技创新团队项目;延安大学大学生创新创业训练计划项目(D2021232)

Correlation between Lp-PLA2 gene polymorphism and histopathological staining of carotid plaque

LIU Yadong1, YANG Lei2, SONG Shaoting1, DU Xiong3, LIU Qiang4, SUN Jianrong5()   

  1. 1. Department of Clinical Laboratory,the Affiliated Hospital of Yan'an University,Yan'an 716000,Shaanxi,China
    2. Emergency Department,the Affiliated Hospital of Yan'an University,Yan'an 716000,Shaanxi,China
    3. Department of Pathology,the Affiliated Hospital of Yan'an University,Yan'an 716000,Shaanxi,China
    4. Department of Neurology,the Affiliated Hospital of Yan'an University,Yan'an 716000,Shaanxi,China
    5. Department of Geriatric Respiratory,the Affiliated Hospital of Yan'an University,Yan'an 716000,Shaanxi,China
  • Received:2023-12-21 Revised:2024-03-06 Online:2024-07-30 Published:2024-07-31

摘要:

目的 探讨脂蛋白相关磷脂酶A2(Lp-PLA2)基因多态性与颈动脉斑块组织病理染色结果的相关性。方法 选取2021年1月—2023年10月在延安大学附属医院行颈动脉剥脱术的患者135例。收集所有患者的临床资料和药物使用情况,并检测血清总胆固醇(TC)、三酰甘油(TG)、高密度脂蛋白胆固醇(HDL-C)、低密度脂蛋白胆固醇(LDL-C)、同型半胱氨酸(Hcy)、脂蛋白(a)[Lp(a)]、高敏C反应蛋白(hs-CRP)、Lp-PLA2水平和Lp-PLA2基因R92H、V297F、A379V位点多态性。对剥脱的颈动脉斑块组织行Von kossa染色、α-SMA染色、油红O染色、EVG染色、CD68+免疫组化染色。根据Lp-PLA2基因多态性检测结果,将所有患者分为对照组(R92H、A379V、V297F位点均未发生突变)、A379V组(仅A379V位点发生突变)、V297F组(仅V297F位点发生突变)、R92H组(仅R92H位点发生突变)。采用Spearman相关分析评估斑块组织不同病理染色结果之间的相关性。采用Logistic回归分析评估Lp-PLA2基因多态性对斑块组织病理染色结果的影响。结果 对照组、A379V组、V297F组和R92H组之间年龄和血清HDL-C、LDL-C、Lp-PLA2水平差异均有统计学意义(P<0.05),其他指标4个组之间差异均无统计学意义(P>0.05)。对照组、A379V组、V297F组、R92H组斑块组织内钙化和坏死核、脂肪、弹力纤维胶原纤维和巨噬细胞阳性百分比差异均有统计学意义(P<0.05)。4个组之间平滑肌细胞阳性百分比差异无统计学意义(P>0.05)。R92H组斑块组织Von kossa染色结果与CD68+免疫组化染色结果呈正相关(r=0.819,P=0.025),其他病理染色结果之间均无相关性(P>0.05)。对照组、A379V组和V297F组斑块组织不同病理染色结果之间均无相关性(P>0.05)。调整年龄和血清HDL-C、LDL-C、Lp-PLA2后,Lp-PLA2基因R92H位点突变是斑块组织内钙化和坏死核阳性百分比、巨噬细胞阳性百分比升高的独立危险因素[比值比(OR)值分别为1.97、1.26,95%可信区间(CI)为1.56~2.19、1.06~1.53,P<0.05]。结论 Lp-PLA2基因R92H位点突变会影响颈动脉斑块的稳定性,增加斑块破裂的风险,临床应重点关注Lp-PLA2基因R92H位点突变人群。

关键词: 脂蛋白相关磷脂酶A2, 基因多态性, 颈动脉斑块, 病理染色

Abstract:

Objective To investigate the correlation between the histopolymorphism of lipoprotein-associated phospholipase A2 (Lp-PLA2) gene and the results of histopathological staining of carotid plaque. Methods A total of 135 patients who underwent carotid artery dissection in the Affiliated Hospital of Yan'an University from January 2021 to October 2023 were enrolled. The clinical and drug use data were collected from all the patients. Serum total cholesterol (TC),triglyceride (TG),high-density lipoprotein cholesterol (HDL-C),low-density lipoprotein cholesterol (LDL-C),homocysteine (Hcy),lipoprotein (a) [Lp (a)],high-sensitivity C-reactive protein (hs-CRP),Lp-PLA2 level and Lp-PLA2 gene R92H,V297F,A379V polymorphisms were determined. Von kossa staining,α-SMA,oil red O staining,EVG staining and CD68+ immunohistochemical staining were performed on the carotid plaque. According to the results of Lp-PLA2 gene polymorphism determination,all the patients were classified into control group (no mutation at R92H,A379V and V297F sites),A379V group (only mutation at A379V site),V297F group (only mutation at V297F site) and R92H group (only mutation at R92H site). Spearman correlation analysis was used to evaluate the correlation with histopathological staining of carotid plaque. Logistic regression analysis was used to evaluate the effect of Lp-PLA2 gene polymorphism on carotid plaque histopathological staining results. Results There was statistical significance in age and serum levels of HDL-C,LDL-C and Lp-PLA2 among control group,A379V group,V297F group and R92H group (P<0.05),while there was no statistical significance in the other indicators among the 4 groups(P>0.05). The positive percentages of calcified and necrotic nuclei,fat,elastic fiber,collagen fiber and macrophage in the carotid plaque of control group,A379V group,V297F group and R92H group were statistically significant(P<0.05). There was no statistical significance in the positive percentage of smooth muscle cells among the 4 groups(P>0.05). There was a positive correlation between Von kossa staining and CD68+ immunohistochemical staining in R92H group (r=0.819,P=0.025),and there was no correlation between the other histopathological staining results (P>0.05). There was no correlation among the histopathological staining results in control group,A379V group and V297F group (P>0.05). After adjusting age and serum HDL-C,LDL-C and Lp-PLA2,Lp-PLA2 gene R92H site mutation was an independent risk factor for increased calcification and necrotic nucleus positive percentage and macrophage positive percentage in carotid plaque [odds ratios (OR) were 1.97 and 1.26,95% confidence intervals(CI)were 1.56- 2.19 and 1.06-1.53,respectively,P<0.05]. Conclusions Lp-PLA2 gene R92H site mutation can affect the stability of carotid plaque and increase the risk of plaque rupture. Clinical attention should be paid to Lp-PLA2 gene R92H site mutation population.

Key words: Lipoprotein-associated phospholipase A2, Gene polymorphism, Carotid plaque, Pathological staining

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