期刊
JOURNAL OF ETHNOPHARMACOLOGY
卷 252, 期 -, 页码 -出版社
ELSEVIER IRELAND LTD
DOI: 10.1016/j.jep.2020.112637
关键词
Astragalus propinquus schischkin and panax notoginseng compound; AKI; Mincle; BMDM; NF-kappa B
资金
- Luzhou - Southwest Medical Joint Platform Project [2017LZXNYD-Z03, 2018LZXNYD-PT03]
- Southwest Medical University and Affiliated Traditional Medicine Hospital Joint program [2018XYLH-002, 2018XYLH-013, 2018XYLH-029]
- Luzhou Science and Technology Project [2016-S-68(4/8)]
- Luzhou Municipal - Southwest Medical University Joint Special Grant for the Introduction of High-level Talents (Lan Hui-Yao Team)
- Construction Project of Sichuan Provincial Key Laboratory of Medicine [53]
Ethnopharmacological relevance: Acute kidney injury (AM) is a common disease in hospitalized patients, especially in critically ill patients. It is characterised with high morbidity and mortality, and is also an important cause of chronic kidney disease and chronic renal failure. Astragalus propinquus Schischkin and Panax notoginseng (A&P) compound, a famous traditional Chinese medicine, consists of Astragalus propinquus Schischkin, Panax notoginseng, Angelica sinensis, Achyranthes bidentata, and Ecklonia kurome, has been widely used for the treatment of various kidney diseases in the southwest of China. However, the effects of A&P on treatment of AKI and its underlying mechanism are needed to be uncovered. Aim of the study: Recent researches reported that Mincle (Macrophage-inducible C-type lectin) plays a key role in renal injury of AM by regulating the expression and secretion of inflammatory cytokines on macrophage through modulating NF-kappa B signaling pathway. Here, we aimed to investigate the renoprotective effect of A&P on AKI and whether by inhibiting Mincle. Materials and methods: We established a lipopolysaccharide (LPS)-induced Bone Marrow-Derived Macrophage (BMDM) inflammatory cell model and a cisplatin-induced mouse AKI model in vitro and in vivo. Renal histopathology staining was performed to observe kidney morphology. The expression and secretion of inflammatory cytokines were detected by real-time PCR and Enzyme-linked immunosorbent assay. Western blotting was used to detect the protein levels and Flow cytometry performed to detect polarization of macrophage. Results: The results showed that A&P significantly reduced the mRNA expression of IL-1 beta, IL-6, TNF alpha and MCP-1 in LPS-stimulated BMDM cells, and secretion of IL-1 beta and IL-6 in supernatant. The same results were found in Cisplatin-induced AM kidney and serum after treatment with A&P. The data also showed that A&P strongly reduced the mRNA and protein levels of Mincle in vitro and vivo, and also inhibited the activation of Syk and NF-kappa B. Notably, A&P down-regulated the M1 macrophage marker iNOS, which may relate to the inhibition of Mincle. Interestingly, both overexpression of Mincle by transfection of pcDNA3.1-Mincle plasmid and administration of TDB (a ligand of Mincle) can significantly abolished the A&P-inhibited inflammation in BMDM, suggesting Mincle pathway play a key role in macrophage inflammation in AKI. Conclusion: Our findings indicated that A&P protected kidney from inhibiting inflammation through downregulating of Mincle pathway in macrophage in AKI. It provides a potential medicine compound for the treatment of AKI.
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