| Autor: |
Rui‐Xiang Chen, Wang‐Jie Jiang, Shuo‐Chen Liu, Zi‐Yi Wang, Zhi‐Bo Wang, Tao Zhou, Yan‐An‐Lan Chen, Ji‐Fei Wang, Jiang Chang, Yi‐Rui Wang, Yao‐Dong Zhang, Xue‐Hao Wang, Xiang‐Cheng Li, Chang‐Xian Li |
| Rok vydání: |
2022 |
| Předmět: |
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| Zdroj: |
Liver international : official journal of the International Association for the Study of the LiverREFERENCES. 43(1) |
| ISSN: |
1478-3231 |
| Popis: |
Apolipoprotein A-1 (ApoA-1), the major apolipoprotein of high-density lipoprotein, plays anti-atherogenic role in cardiovascular diseases and exerts anti-inflammation effect in various inflammatory and infectious diseases. However, the role and mechanism of ApoA-1 in hepatic ischaemia-reperfusion (I/R) injury is unknown.In this study, we measured ApoA-1 expression in human liver grafts after transplantation. Mice partial hepatic I/R injury model was made in ApoA-1 knockout mice, ApoA-1 mimetic peptide D-4F treatment mice and corresponding control mice to examine the effect of ApoA-1 on liver damage, inflammation response and cell death. Primary hepatocytes and macrophages were isolated for in vitro study.The results showed that ApoA-1 expression was down-regulated in human liver grafts after transplantation and mice livers subjected to hepatic I/R injury. ApoA-1 deficiency aggravated liver damage and inflammation response induced by hepatic I/R injury. Interestingly, we found that ApoA-1 deficiency increased pyroptosis instead of apoptosis during acute phase of hepatic I/R injury, which mainly occurred in macrophages rather than hepatocytes. The inhibition of pyroptosis compensated for the adverse impact of ApoA-1 deficiency. Furthermore, the up-regulated pyroptosis process was testified to be mediated by ApoA-1 through TLR4-NF-κB pathway and TLR4 inhibition significantly improved hepatic I/R injury. In addition, we confirmed that D-4F ameliorated hepatic I/R injury.Our study has identified the protective role of ApoA-1 in hepatic I/R injury through inhibiting pyroptosis in macrophages via TLR4-NF-κB pathway. The effect of ApoA-1 may provide a novel therapeutic approach for hepatic I/R injury. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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