刺槐素通过调控尿酸转运蛋白和NF-κB/NLRP3信号通路改善高尿酸血症

被引:2
作者
吴选霞 [1 ]
补娟 [1 ]
叶勒丹马汉 [1 ]
张胜男 [2 ]
张晓玲 [1 ]
周玲 [1 ]
机构
[1] 新疆维吾尔自治区人民医院
[2] 新疆大学生命科学院
关键词
高尿酸血症; 刺槐素; 尿酸转运蛋白; 核转录因子(NF)-κB/核苷酸寡聚化结构域样受体热蛋白结构域相关蛋白3(NLRP3)信号通路; 炎症;
D O I
10.13422/j.cnki.syfjx.20241711
中图分类号
R285.5 [中药实验药理];
学科分类号
100806 [中药药理学];
摘要
目的:探讨刺槐素对高尿酸血症(HUA)小鼠的降尿酸作用及其潜在机制。方法:采用氧嗪酸钾和腺嘌呤联合建立HUA小鼠模型。将48只雄性昆明小鼠随机分为6组,正常组,模型组,刺槐素低、中、高剂量(12.5、25、50 mg·kg-1)组和别嘌呤醇组(10 mg·kg-1),连续灌胃给药21 d。采用全自动生化分析仪检测小鼠血清尿酸(UA)、肌酐(Cr)、尿素氮(BUN)、丙氨酸氨基转移酶(ALT)和天冬氨酸氨基转移酶(AST)水平。通过酶联免疫吸附测定法(ELISA)检测小鼠肝脏组织黄嘌呤氧化酶(XOD)活性,血清肿瘤坏死因子-α(TNF-α)、白细胞介素(IL)-1β和IL-18水平。采用苏木素-伊红(HE)染色观察小鼠肾脏组织病理改变。通过蛋白免疫印迹法(Western blot)检测小鼠肾脏组织中葡萄糖转运蛋白9(GLUT9)、尿酸转运蛋白1(URAT1)、磷酸化NF-κB p65蛋白(p-NF-κB p65)和核苷酸寡聚化结构域样受体热蛋白结构域相关蛋白3(NLRP3)水平。结果:与正常组比较,模型组小鼠的UA、Cr、BUN、ALT和AST水平显著升高,肝脏组织XOD活性增加,TNF-α、IL-1β和IL-18水平升高,肾脏组织GLUT9、URAT1、p-NF-κB p65和NLRP3蛋白水平显著增高(P<0.01);与模型组比较,刺槐素呈剂量依赖性地降低小鼠血清UA水平,显著改善肝、肾功能(P<0.05),降低肝脏组织XOD活性(P<0.01),改善肾脏病理状态,下调肾脏组织GLUT9、URAT1、p-NF-κB p65和NLRP3蛋白水平(P<0.01),降低血清炎症因子TNF-α、IL-1β和IL-18水平(P<0.01)。结论:刺槐素可以通过减少尿酸生成、增加尿酸排泄及抑制NF-κB/NLRP3信号通路来改善HUA。因此,刺槐素可能是一种治疗HUA的潜在药物。
引用
收藏
页码:191 / 198
页数:8
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