Astragalus polysaccharides protects against acute leptospirosis by glycolysis-depended priming effect

文献类型： 外文期刊

第一作者： Zhang, Wenlong

作者： Zhang, Wenlong;Song, Ning;Gao, Yuan;Xie, Xufeng;Liu, Kun;Cao, Yongguo;Zhang, Wenlong;Cao, Yongguo;Jin, Ningyi

作者机构：

关键词： Leptospirosis; Astragalus polysaccharides; Priming effect; Glycolysis; Hamster

期刊名称：BIOMEDICINE & PHARMACOTHERAPY （ 影响因子：7.419； 五年影响因子：6.581 ）

ISSN： 0753-3322

年卷期： 2022 年 151 卷

页码：

收录情况： SCI

摘要： Leptospirosis, caused by pathogenic leptospira, is a neglected infectious disease that causes acute kidney injury, bleeding disorders, and even death. People can become infected with leptospirosis when they travel into epidemic areas. Except for vaccines and antibiotics, there are few reports of other drugs about prevention of leptospirosis. In this study, we show that the natural molecular compound, astragalus polysaccharides (APS), prevents against acute leptospirosis in hamsters. Pretreatment with APS improved the survival rate of hamsters with more minor organ damage and lower leptospira burden. After pretreatment with APS, the expression levels of leptospira-induced TLR2, TLR4, and TNF-alpha were enhanced. The priming effect of APS was studied in vitro. The data showed that leptospira-induced expressions of TNF-alpha and IL-1P were higher in APS-primed peritoneal macrophage, with enhanced glucose consumption and lactate production. Transcriptomic analysis revealed that pretreatment with APS down regulated respiratory chain and mitochondrial function, up regulated glycolysis related gene expressions. After pretreatment with glycolysis inhibitor (2-DG), the priming effect of APS in leptospira infection was inhibited. Our results indicated that pretreatment with natural molecular compound, APS, protected against acute leptospirosis in hamsters by priming effect through enhanced glycolysis.

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