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基于Keap1/Nrf2信号通路探讨苗药痛风方对痛风性关节炎大鼠的作用机制
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作者 刘道忠 冯佳 +6 位作者 刘义 熊国飞 张宗星 江露 李玮怡 包卓玛 袁林 《中国病理生理杂志》 CAS CSCD 北大核心 2024年第8期1505-1510,共6页
目的:探讨苗药痛风方(MTP)是否通过调控Kelch样环氧氯丙烷相关蛋白1(Keap1)/核因子E2相关因子2(Nrf2)信号通路,减轻痛风性关节炎模型大鼠氧化应激损伤。方法:将50只雄性SD大鼠随机分为对照组、模型组、MTP组、Nrf2抑制剂全反式维甲酸(AT... 目的:探讨苗药痛风方(MTP)是否通过调控Kelch样环氧氯丙烷相关蛋白1(Keap1)/核因子E2相关因子2(Nrf2)信号通路,减轻痛风性关节炎模型大鼠氧化应激损伤。方法:将50只雄性SD大鼠随机分为对照组、模型组、MTP组、Nrf2抑制剂全反式维甲酸(ATRA)组和MTP组+ATRA组。使用3%氧嗪酸钾溶液(10 mL/kg)行腹腔内注射,每天2次,连续注射1周,然后在大鼠右侧膝关节注射0.2 mL尿酸钠混悬液(25 g/L),构建痛风性关节炎模型。各组大鼠于造模后48 h处死取材,测量大鼠膝关节肿胀程度;HE染色观察大鼠膝关节病理改变;试剂盒检测大鼠血清中超氧化物歧化酶(SOD)、丙二醛(MDA)和白细胞介素1β(IL-1β)水平;qRT-PCR法检测大鼠膝关节滑膜中Nrf2、Keap1、血红素加氧酶1(HO-1)、IL-1β和NAD(P)H:醌氧化还原酶1(NQO1)的mRNA表达;Western blot检测大鼠膝关节滑膜中Nrf2、Keap1和NQO1的蛋白表达。结果:与模型组相比,MTP能显著降低大鼠膝关节肿胀程度,减轻膝关节滑膜的病理损伤,抑制MDA和IL-1β的表达,增加SOD的表达,上调滑膜中HO-1 mRNA及Nrf2和NQO1 mRNA和蛋白的表达,下调IL-1βmRNA及Keap1 mRNA和蛋白的表达。结论:MTP通过调控Nrf2及其下游抗氧化基因发挥防治大鼠痛风性关节炎的作用。 展开更多
关键词 苗药痛风方 痛风性关节炎 Keap1/Nrf2信号通路
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Construction utilization of foamed waste glass 被引量:6
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作者 jianglu KatsutadaONITSUKA 《Journal of Environmental Sciences》 SCIE EI CAS CSCD 2004年第2期302-307,共6页
Foamed waste glass(FWG) material is newly developed for the purpose to utilize the waste glassware and other waste glass. FWG has a multi-porous structure that consists of continuous or discontinuous voids. Hence ligh... Foamed waste glass(FWG) material is newly developed for the purpose to utilize the waste glassware and other waste glass. FWG has a multi-porous structure that consists of continuous or discontinuous voids. Hence lightweight but considerable stiffness can be achieved. In the present study, the manufacture and engineering properties of FWG are introduced first. Then, the utilizations of FWG are investigated in laboratory tests and field tests. Some case studies on design and construction work are also reported here. Through these studies we know that the discontinuous void material can be utilized as a lightweight fill material, ground improvement material and lightweight aggregate for concrete. On the other hand, the continuous void material can be used as water holding material for the greening of ground slope and rooftop, and as clarification material for water. 展开更多
关键词 foamed waste glass(FWG) engineering properties lightweight material CONSTRUCTION
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