Ephedrine hydrochloride protects mice from
Autor: | Weigang, He, Jinzhu, Ma, Yijian, Chen, Xinru, Jiang, Yuli, Wang, Ting, Shi, Qingwen, Zhang, Yang, Yang, Xin, Jiang, Shulei, Yin, Aoxiang, Zheng, Jie, Lu, Yuejuan, Zheng |
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Rok vydání: | 2017 |
Předmět: | |
Zdroj: | American journal of translational research. 10(3) |
ISSN: | 1943-8141 |
Popis: | Staphylococcus aureus is a Gram-positive (G+) bacterium that causes a wide range of diseases in humans and livestock. Therefore, the development of innovative and effective therapies is essential for the treatment of S. aureus-induced severe infections. Ephedrine hydrochloride (EH) is a compound derived from ephedrine and is widely used for the management of cardiovascular diseases and hypotension. The results of our previous studies demonstrated that EH has anti-inflammatory activity in macrophages and protects against endotoxic shock. However, whether EH regulates the function of dendritic cells (DCs) and the immune response in S. aureus-induced infection is unknown. In this study, the anti-inflammatory and regulatory activity of EH on DCs was evaluated. EH increased the production of anti-inflammatory cytokine IL-10 and decreased the production of proinflammatory cytokines TNF-α and IL-12 in DCs stimulated with peptidoglycan (PGN), the main cell wall component in G+ bacteria. The PI3K/Akt and p38 MAPK signaling pathways controlled EH-induced IL-10 expression and EH-inhibited TNF-α expression, respectively. The PGN-induced expression of co-stimulatory molecules CD40, CD80, CD86, and MHC class II molecule Iab was down-regulated in DCs by EH. Furthermore, EH protected the liver and kidney and increased the survival rate of mice with S. aureus-induced peritonitis. In conclusion, EH helps to keep immune homeostasis and alleviate organ damage during S. aureus-induced peritonitis. Therefore, EH may be a promising drug candidate in the treatment of S. aureus-induced severe infections and other invasive G+ bacterial infections. |
Databáze: | OpenAIRE |
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