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Ma, Ming‐Hui; Li, Feng‐Feng; Li, Wen‐Feng; Zhao, Hui; Jiang, Man; Yu, Yuan‐Yuan; Dong, Yan‐Chao; Zhang, Yi‐Xin; Li, Ping; Bu, Wen‐Jie; Sun, Zhi‐Jie; Dong, De‐Li
British journal of pharmacology, January 2023, 2023-Jan, 2023-01-00, 20230101, Letnik: 180, Številka: 1Journal Article
Background and Purpose The anthelmintic drug nitazoxanide has a mitochondrial uncoupling effect. Mitochondrial uncouplers have been proven to inhibit smooth muscle cell proliferation and migration, inhibit NLRP3 inflammasome activation of macrophages and improve dyslipidaemia. Therefore, we aimed to demonstrate that nitazoxanide would protect against atherosclerosis. Experimental Approach The mitochondrial oxygen consumption of cells was measured by using the high‐resolution respirometry system, Oxygraph‐2K. The proliferation and migration of A10 cells were measured by using Edu immunofluorescence staining, wound‐induced migration and the Boyden chamber assay. Protein levels were measured by using the western blot technique. ApoE (−/−) mice were fed with a Western diet to establish an atherosclerotic model in vivo. Key Results The in vitro experiments showed that nitazoxanide and tizoxanide had a mitochondrial uncoupling effect and activated cellular AMPK. Nitazoxanide and tizoxanide inhibited serum‐ and PDGF‐induced proliferation and migration of A10 cells. Nitazoxanide and tizoxanide inhibited NLRP3 inflammasome activation in RAW264.7 macrophages, the mechanism by which involved the AMPK/IκBα/NF‐κB pathway. Nitazoxanide and tizoxanide also induced autophagy in A10 cells and RAW264.7 macrophages. The in vivo experiments demonstrated that oral administration of nitazoxanide reduced the increase in serum IL‐1β and IL‐6 levels and suppressed atherosclerosis in Western diet‐fed ApoE (−/−) mice. Conclusion and Implications Nitazoxanide inhibits the formation of atherosclerotic plaques in ApoE (−/−) mice fed on a Western diet. In view of nitazoxanide being an antiprotozoal drug already approved by the FDA, we propose it as a novel anti‐atherosclerotic drug with clinical translational potential.
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JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
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in: SICRIS
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