青蒿素对大鼠心肌缺血再灌注损伤的影响及其作用机制探讨

被引:7
作者
马瑞松 [1 ]
江洪 [1 ]
李元红 [2 ]
胡笑容 [1 ]
刘自强 [1 ]
机构
[1] 武汉大学人民医院心内科
[2] 恩施土家族苗族自治州中心医院心内科
关键词
青蒿素; 炎症; p38MAPK; 心肌缺血再灌注损伤;
D O I
暂无
中图分类号
R285.5 [中药实验药理];
学科分类号
1008 ;
摘要
目的探讨青蒿素对大鼠心肌缺血再灌注损伤的影响及其可能作用机制。方法采用大鼠心肌缺血再灌注模型(缺血30 min,再灌注4 h),雄性SD大鼠30只根据随机数字表随机分为三组:假手术组(SO组,n=10)、缺血再灌注组(I/R组,n=10)和青蒿素治疗组(A+I/R组,n=10,Artemisinin:25 mg/kg,Tid,造模前1 d灌胃)。检测心肌损伤标记物肌酸激酶(CK)、乳酸脱氢酶(LDH)和肌钙蛋白I(c Tn I);检测炎症因子高迁移率族蛋白1(HMGB1)、白介素17A(IL-17A)、肿瘤坏死因子α(TNF-α)、干扰素γ(INF-γ)和白介素6(IL-6);检测总p38(t-p38)和磷酸化p38(p-p38)。结果与SO组比较,I/R组中心肌损伤标记物CK[(3 891±245.44)U/L vs(1 539±140.57)U/L]、LDH[(1 917±140.54)U/L vs(889±87.23)U/L]、c Tn I[(66.34±2.13)pg/m L vs(26.45±1.72)pg/m L];炎症因子HMGB1[(0.423±0.059)vs(0.301±0.067)]、IL-17A[(149.29±5.88)pg/m L vs(55.26±4.33)pg/m L]、TNF-α[(185.27±5.61)pg/m L vs(95.34±3.56)pg/m L]、INF-γ[(418.86±12.37)pg/m L vs(223.35±10.51)pg/m L]、IL-6[(156.89±6.01)pg/m L vs(65.43±4.21 pg/m L]、p-p38[(0.416±0.025)vs(0.188±0.013)]表达明显增加,差异均有统计学意义(P<0.05);与I/R比较,A+I/R组中心肌损伤标记物CK[(1934±199.56)U/L]、LDH[(973±79.47)U/L]、c Tn I[(38.1±2.69)pg/m L]和炎症因子HMGB1(0.174±0.026)、IL-17A[(93.65±2.69)pg/m L]、TNF-α[(145.85±3.92)pg/m L]、INF-γ[326.54±9.81]pg/m L]、IL-6[(95.47±3.16)pg/m L]、p-p38[(0.297±0.021)]表达明显降低,差异均有统计学意义(P<0.05)。结论青蒿素可能通过抑制p38MAPK通路减轻I/R中炎症反应;青蒿素亦可通过抑制炎症反应减轻心肌缺血再灌注损伤。
引用
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页码:1734 / 1736
页数:3
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