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Liu C, Chi K, Geng X, Hong Q, Mao Z, Huang Q, Liu D, Wang Y, Zhang Y, Zhou F, Cai G, Chen X, Sun X. Exogenous Biological Renal Support Improves Kidney Function in Mice With Rhabdomyolysis-Induced Acute Kidney Injury. Front Med (Lausanne) 2021; 8:655787. [PMID: 34124093 PMCID: PMC8193099 DOI: 10.3389/fmed.2021.655787] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2021] [Accepted: 03/16/2021] [Indexed: 11/13/2022] Open
Abstract
Background: Rhabdomyolysis (RM) is a clinical syndrome characterized by breakdown of skeletal muscle fibers and release of their contents into the circulation. Myoglobin-induced acute kidney injury (AKI) is one of the most severe complications of RM. Based on our previous research, exogenous biological renal support alleviates renal ischemia–reperfusion injury in elderly mice. This study aimed to determine whether exogenous biological renal support promotes renal recovery from RM-induced AKI and to preliminarily explore the mechanisms involved. Methods: A parabiosis animal model was established to investigate the effects of exogenous biological renal support on RM-induced AKI. Mice were divided into three groups: the control group (in which mice were injected with sterile saline), the RM group (in which mice were injected with 8 mL/kg glycerol), and the parabiosis + RM group (in which recipient mice were injected with glycerol 3 weeks after parabiosis model establishment). Blood samples and kidney tissue were collected for further processing 48 h after RM induction. Bioinformatics analysis was conducted via Gene Ontology analysis, Kyoto Encyclopedia of Genes and Genomes pathway analysis, functional enrichment analysis, and clustering analysis. Results: No mice died within 48 h after the procedure. Exogenous biological renal support attenuated the histological and functional deterioration in mice with RM-induced AKI. Bioinformatics analysis identified key pathways and proteins involved in this process. We further demonstrated that exogenous biological renal support ameliorated AKI through multiple mechanisms, including by suppressing the complement system; attenuating oxidative stress, inflammation, and cell death; and increasing proliferation. Conclusions: Exogenous biological renal support provided by parabiosis can improve renal function in RM-induced AKI by suppressing the complement system; decreasing oxidative stress, inflammation, and cell death; and promoting tubular cell proliferation. Our study provides basic research evidence for the use of bioartificial kidneys to treat RM-induced AKI.
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Affiliation(s)
- Chao Liu
- Medical School of Chinese People's Liberation Army (PLA), Beijing, China.,State Key Laboratory of Kidney Diseases, Department of Nephrology, National Clinical Research Center for Kidney Diseases, Chinese People's Liberation Army (PLA) Institute of Nephrology, Chinese People's Liberation Army (PLA) General Hospital, Beijing, China
| | - Kun Chi
- Medical School of Chinese People's Liberation Army (PLA), Beijing, China.,State Key Laboratory of Kidney Diseases, Department of Nephrology, National Clinical Research Center for Kidney Diseases, Chinese People's Liberation Army (PLA) Institute of Nephrology, Chinese People's Liberation Army (PLA) General Hospital, Beijing, China
| | - Xiaodong Geng
- Medical School of Chinese People's Liberation Army (PLA), Beijing, China.,State Key Laboratory of Kidney Diseases, Department of Nephrology, National Clinical Research Center for Kidney Diseases, Chinese People's Liberation Army (PLA) Institute of Nephrology, Chinese People's Liberation Army (PLA) General Hospital, Beijing, China
| | - Quan Hong
- Medical School of Chinese People's Liberation Army (PLA), Beijing, China.,State Key Laboratory of Kidney Diseases, Department of Nephrology, National Clinical Research Center for Kidney Diseases, Chinese People's Liberation Army (PLA) Institute of Nephrology, Chinese People's Liberation Army (PLA) General Hospital, Beijing, China
| | - Zhi Mao
- Department of Critical Care Medicine, Chinese People's Liberation Army (PLA) General Hospital, Beijing, China
| | - Qi Huang
- Department of Nephrology, Beijing Tiantan Hospital, Capital Medical University, Beijing, China
| | - Dong Liu
- Department of Nephrology, Air Force Medical Center, People's Liberation Army (PLA), Beijing, China
| | - Yiqin Wang
- State Key Laboratory of Kidney Diseases, Department of Nephrology, National Clinical Research Center for Kidney Diseases, Chinese People's Liberation Army (PLA) Institute of Nephrology, Chinese People's Liberation Army (PLA) General Hospital, Beijing, China
| | - Ying Zhang
- Department of Ultrasound, Chinese People's Liberation Army (PLA) General Hospital, Beijing, China
| | - Feihu Zhou
- Department of Critical Care Medicine, Chinese People's Liberation Army (PLA) General Hospital, Beijing, China
| | - Guangyan Cai
- State Key Laboratory of Kidney Diseases, Department of Nephrology, National Clinical Research Center for Kidney Diseases, Chinese People's Liberation Army (PLA) Institute of Nephrology, Chinese People's Liberation Army (PLA) General Hospital, Beijing, China
| | - Xiangmei Chen
- State Key Laboratory of Kidney Diseases, Department of Nephrology, National Clinical Research Center for Kidney Diseases, Chinese People's Liberation Army (PLA) Institute of Nephrology, Chinese People's Liberation Army (PLA) General Hospital, Beijing, China
| | - Xuefeng Sun
- State Key Laboratory of Kidney Diseases, Department of Nephrology, National Clinical Research Center for Kidney Diseases, Chinese People's Liberation Army (PLA) Institute of Nephrology, Chinese People's Liberation Army (PLA) General Hospital, Beijing, China
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Chen Y, Huang Y, Xiong B, Luo H, Song X. Dexmedetomidine ameliorates renal ischemia reperfusion-mediated activation of the NLRP3 inflammasome in alveolar macrophages. Gene 2020; 758:144973. [PMID: 32707303 DOI: 10.1016/j.gene.2020.144973] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2020] [Revised: 07/01/2020] [Accepted: 07/17/2020] [Indexed: 02/07/2023]
Abstract
Renal ischemia-reperfusion (rI/R) is a risk factor for acute lung injury (ALI). Alveolar macrophages (AMs) activation mediated by rI/R-induced ALI is one of the pathogeneses associated with the development of ALI. In rI/R, α2-adrenergic receptor agonists have been indicated to be effective in decreasing urea nitrogen concentrations. In this study, we explored the underlying pathogenesis of the clinically obtainable α2-adrenergic receptor agonist dexmedetomidine (DEX) in protecting against rI/R -mediated AMs activation. We incubated AMs with the serum of sham and rI/R rats in the presence or absence of various concentrations of DEX. We used an enzyme-linked immunosorbent assay to detect the secretion levels of GSH, LDH, IL-18, IL-1β, and HMGB1 in the culture supernatant. We employed real-time polymerase chain reaction to assess the expression of NOX-4 mRNA, and western blotting to observe the protein levels of NOX-4, the NLRP3 inflammasome, AMPK, and eNOS. In addition, we used immunofluorescence to analyze ROS and MMP activity. Incubation of AMs with DEX suppressed rI/R-mediated cellular LDH production and ROS release. DEX also abolished the rI/R-mediated decrease in the activity of GSH and increased the levels of the rI/R-related NADPH oxidase protein NOX-4. Furthermore, DEX reduced the amelioration of the mitochondrial potential induced by rI/R. Our study showed that DEX inhibits rI/R-mediated levels of the NLRP3 inflammasome proteins ASC, NLRP3, HMGB1 and p20, and ameliorates rI/R-mediated AMPK signaling inactivation. Therefore, DEX reduces the levels of two mediators that are activated by the NLRP3 inflammasome: IL-18 and IL-1β. Finally, our study established that DEX mitigates the rI/R-mediated decrease in eNOS, demonstrating its protective functions against AMs activation. In conclusion, our study demonstrated that the protective action of DEX in AMs is induced through amelioration of HMGB1-NLRP3 inflammasome-AMPK signaling. Our results suggest that the anesthetic reagent DEX exerts beneficial effects to ameliorate rI/R-induced ALI.
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Affiliation(s)
- Yingying Chen
- Department of Anesthesiology, Zhongnan Hospital, Wuhan University, Wuhan, Hubei, China
| | - Ying Huang
- Department of Anesthesiology, Zhongnan Hospital, Wuhan University, Wuhan, Hubei, China
| | - Bingrui Xiong
- Department of Anesthesiology, Zhongnan Hospital, Wuhan University, Wuhan, Hubei, China
| | - Huan Luo
- Department of Anesthesiology, Zhongnan Hospital, Wuhan University, Wuhan, Hubei, China
| | - Xuemin Song
- Department of Anesthesiology, Zhongnan Hospital, Wuhan University, Wuhan, Hubei, China.
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