Effect of gedunin on acute articular inflammation and hypernociception in mice.

Effect of gedunin on acute articular inflammation and hypernociception in mice.
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DOI:
10.3390/molecules20022636
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发表时间:
2015-02-03
期刊:
Molecules (Basel, Switzerland)
影响因子:
--
通讯作者:
Henriques MG
Henriques MG
中科院分区:
其他
文献类型:
--
作者:
Conte FP;Ferraris FK;Costa TE;Pacheco P;Seito LN;Verri WA Jr;Cunha FQ;Penido C;Henriques MG

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Gedunin 是一种来自楝科物种的天然柠檬苦素类化合物,之前已被描述为过敏性炎症实验模型中的抗炎化合物。在这里,我们报告了 gedunin 在 C57BL/6 小鼠中由酵母聚糖(500 μg/腔;关节内)诱导的急性关节炎症模型中的抗炎和抗伤害作用。由于 preproET-1 mRNA 的表达和 LTB4、PGE2、TNF-α 和 IL-6 的产生减少,腹膜内 (i.p.) 预处理格杜宁 (0.005–5 mg/kg) 会损害酵母聚糖诱导的水肿形成、中性粒细胞积聚和小鼠膝关节痛觉过度。刺激后 1 小时和 6 小时用葛杜宁(0.05 mg/kg;腹膜内注射)对小鼠进行后处理也可通过恢复水肿形成、中性粒细胞积聚以及脂质介质、细胞因子和内皮素的产生来损害关节炎症。此外,葛杜宁在体外直接调节中性粒细胞和巨噬细胞的功能。中性粒细胞与 gedunin (100 µM) 的预孵育会损害形状变化、与内皮细胞的粘附、不同刺激触发的趋化性和脂质体形成。用葛杜宁预处理巨噬细胞会损害细胞内钙动员、一氧化氮生成、诱导型一氧化氮合酶表达,并诱导抗炎伴侣热休克蛋白 70 的表达。我们的结果表明,葛杜宁对酵母聚糖诱导的发炎膝关节具有显着的抗炎和抗伤害作用,调节不同的细胞群。
Gedunin, a natural limonoid from Meliaceae species, has been previously described as an antiinflammatory compound in experimental models of allergic inflammation. Here, we report the antiinflammatory and antinociceptive effects of gedunin in an acute model of articular inflammation induced by zymosan (500 μg/cavity; intra-articular) in C57BL/6 mice. Intraperitoneal (i.p.) pretreatment with gedunin (0.005–5 mg/kg) impaired zymosan-induced edema formation, neutrophil accumulation and hypernociception in mouse knee joints, due to decreased expression of preproET-1 mRNA and production of LTB4, PGE2, TNF-α and IL-6. Mouse post-treatment with gedunin (0.05 mg/kg; i.p.) 1 and 6 h after stimulation also impaired articular inflammation, by reverting edema formation, neutrophil accumulation and the production of lipid mediators, cytokines and endothelin. In addition, gedunin directly modulated the functions of neutrophils and macrophages in vitro. The pre-incubation of neutrophil with gedunin (100 µM) impaired shape change, adhesion to endothelial cells, chemotaxis and lipid body formation triggered by different stimuli. Macrophage pretreatment with gedunin impaired intracellular calcium mobilization, nitric oxide production, inducible nitric oxide synthase expression and induced the expression of the antiinflammatory chaperone heat shock protein 70. Our results demonstrate that gedunin presents remarkable antiinflammatory and anti-nociceptive effects on zymosan-induced inflamed knee joints, modulating different cell populations.
DOI: 10.1021/jm8007486
发表时间: 2008-10-23
影响因子: 7.3
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Brandt GE;Schmidt MD;Prisinzano TE;Blagg BS
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发表时间: 2008-08-01
影响因子: --
作者:
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