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Perez-Moreno E, Toledo T, Campusano P, Zuñiga S, Azócar L, Feuerhake T, Méndez GP, Labarca M, Pérez-Molina F, de la Peña A, Herrera-Cid C, Ehrenfeld P, Godoy AS, González A, Soza A. Galectin-8 counteracts folic acid-induced acute kidney injury and prevents its transition to fibrosis. Biomed Pharmacother 2024; 177:116923. [PMID: 38936192 DOI: 10.1016/j.biopha.2024.116923] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2024] [Revised: 06/03/2024] [Accepted: 06/09/2024] [Indexed: 06/29/2024] Open
Abstract
Acute kidney injury (AKI), characterized by a sudden decline in kidney function involving tubular damage and epithelial cell death, can lead to progressive tissue fibrosis and chronic kidney disease due to interstitial fibroblast activation and tissue repair failures that lack direct treatments. After an AKI episode, surviving renal tubular cells undergo cycles of dedifferentiation, proliferation and redifferentiation while fibroblast activity increases and then declines to avoid an exaggerated extracellular matrix deposition. Appropriate tissue recovery versus pathogenic fibrotic progression depends on fine-tuning all these processes. Identifying endogenous factors able to affect any of them may offer new therapeutic opportunities to improve AKI outcomes. Galectin-8 (Gal-8) is an endogenous carbohydrate-binding protein that is secreted through an unconventional mechanism, binds to glycosylated proteins at the cell surface and modifies various cellular activities, including cell proliferation and survival against stress conditions. Here, using a mouse model of AKI induced by folic acid, we show that pre-treatment with Gal-8 protects against cell death, promotes epithelial cell redifferentiation and improves renal function. In addition, Gal-8 decreases fibroblast activation, resulting in less expression of fibrotic genes. Gal-8 added after AKI induction is also effective in maintaining renal function against damage, improving epithelial cell survival. The ability to protect kidneys from injury during both pre- and post-treatments, coupled with its anti-fibrotic effect, highlights Gal-8 as an endogenous factor to be considered in therapeutic strategies aimed at improving renal function and mitigating chronic pathogenic progression.
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Affiliation(s)
- Elisa Perez-Moreno
- Centro de Biología Celular y Biomedicina (CEBICEM), Facultad de Medicina y Ciencia, Universidad San Sebastián, Santiago, Chile; Centro Científico y Tecnológico de Excelencia (CCTE) Ciencia & Vida, Santiago, Chile
| | - Tomás Toledo
- Centro de Biología Celular y Biomedicina (CEBICEM), Facultad de Medicina y Ciencia, Universidad San Sebastián, Santiago, Chile
| | - Pascale Campusano
- Centro de Biología Celular y Biomedicina (CEBICEM), Facultad de Medicina y Ciencia, Universidad San Sebastián, Santiago, Chile
| | - Sebastián Zuñiga
- Centro de Biología Celular y Biomedicina (CEBICEM), Facultad de Medicina y Ciencia, Universidad San Sebastián, Santiago, Chile
| | - Lorena Azócar
- Centro de Biología Celular y Biomedicina (CEBICEM), Facultad de Medicina y Ciencia, Universidad San Sebastián, Santiago, Chile
| | - Teo Feuerhake
- Department of Pathology, School of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile
| | | | - Mariana Labarca
- Centro de Biología Celular y Biomedicina (CEBICEM), Facultad de Medicina y Ciencia, Universidad San Sebastián, Santiago, Chile
| | - Francisca Pérez-Molina
- Centro de Biología Celular y Biomedicina (CEBICEM), Facultad de Medicina y Ciencia, Universidad San Sebastián, Santiago, Chile; Centro Científico y Tecnológico de Excelencia (CCTE) Ciencia & Vida, Santiago, Chile
| | - Adely de la Peña
- Centro de Biología Celular y Biomedicina (CEBICEM), Facultad de Medicina y Ciencia, Universidad San Sebastián, Santiago, Chile; Centro Científico y Tecnológico de Excelencia (CCTE) Ciencia & Vida, Santiago, Chile
| | - Cristian Herrera-Cid
- Centro de Biología Celular y Biomedicina (CEBICEM), Facultad de Medicina y Ciencia, Universidad San Sebastián, Santiago, Chile
| | - Pamela Ehrenfeld
- Instituto de Anatomía, Histología y Patología, Facultad de Medicina, Universidad Austral de Chile, Valdivia, Chile
| | - Alejandro S Godoy
- Centro de Biología Celular y Biomedicina (CEBICEM), Facultad de Medicina y Ciencia, Universidad San Sebastián, Santiago, Chile
| | - Alfonso González
- Centro de Biología Celular y Biomedicina (CEBICEM), Facultad de Medicina y Ciencia, Universidad San Sebastián, Santiago, Chile; Centro Científico y Tecnológico de Excelencia (CCTE) Ciencia & Vida, Santiago, Chile
| | - Andrea Soza
- Centro de Biología Celular y Biomedicina (CEBICEM), Facultad de Medicina y Ciencia, Universidad San Sebastián, Santiago, Chile; Centro Científico y Tecnológico de Excelencia (CCTE) Ciencia & Vida, Santiago, Chile.
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Lyu J, Sheng M, Cao Y, Jia L, Zhang C, Weng Y, Yu W. Ischemia and reperfusion-injured liver-derived exosomes elicit acute lung injury through miR-122-5p regulated alveolar macrophage polarization. Int Immunopharmacol 2024; 131:111853. [PMID: 38503014 DOI: 10.1016/j.intimp.2024.111853] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2023] [Revised: 02/16/2024] [Accepted: 03/10/2024] [Indexed: 03/21/2024]
Abstract
Acute lung injury (ALI) is a common postoperative complication, particularly in pediatric patients after liver transplantation. Hepatic ischemia-reperfusion (HIR) increases the release of exosomes (IR-Exos) in peripheral circulation. However, the role of IR-Exos in the pathogenesis of ALI induced by HIR remains unclear. Here, we explored the role of exosomes derived from the HIR-injured liver in ALI development. Intravenous injection of IR-Exos caused lung inflammation in naive rats, whereas pretreatment with an inhibitor of exosomal secretion (GW4869) attenuated HIR-related lung injury. In vivo and in vitro results show that IR-Exos promoted proinflammatory responses and M1 macrophage polarization. Furthermore, miRNA profiling of serum identified miR-122-5p as the exosomal miRNA with the highest increase in young rats with HIR compared with controls. Additionally, IR-Exos transferred miR-122-5p to macrophages and promoted proinflammatory responses and M1 phenotype polarization by targeting suppressor of cytokine signaling protein 1(SOCS-1)/nuclear factor (NF)-κB. Importantly, the pathological role of exosomal miR-122-5p in initiating lung inflammation was reversed by inhibition of miR-122-5p. Clinically, high levels of miR-122-5p were found in serum and correlated to the severity of lung injury in pediatric living-donor liver transplant recipients with ALI. Taken together, our findings reveal that IR-Exos transfer liver-specific miR-122-5p to alveolar macrophages and elicit ALI by inducing M1 macrophage polarization via the SOCS-1/NF-κB signaling pathway.
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Affiliation(s)
- Jingshu Lyu
- Department of Anesthesiology, Tianjin First Central Hospital, 300192 Tianjin, China; Department of Anesthesiology and Perioperative Medicine, Zhengzhou University People's Hospital, Henan University People's Hospital, Henan Provincial People's Hospital, 450000 Zhengzhou, China
| | - Mingwei Sheng
- Department of Anesthesiology, Tianjin First Central Hospital, 300192 Tianjin, China
| | - Yingli Cao
- School of Medicine, Nankai University, 300071 Tianjin, China
| | - Lili Jia
- Department of Anesthesiology, Tianjin First Central Hospital, 300192 Tianjin, China
| | - Chen Zhang
- Department of Anesthesiology, The First Central Clinical School, Tianjin Medical University, Tianjin 300070, China
| | - Yiqi Weng
- Department of Anesthesiology, Tianjin First Central Hospital, 300192 Tianjin, China
| | - Wenli Yu
- Department of Anesthesiology, Tianjin First Central Hospital, 300192 Tianjin, China; School of Medicine, Nankai University, 300071 Tianjin, China.
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Li N, Huang Y, Yi Y, Qian J, Li Q, Xu SQ, Wang HF, Wu XX, Peng JC, Li LH, Yao JJ, Liu XR. Analysis of abnormal expression of signaling pathways in PQ-induced acute lung injury in SD rats based on RNA-seq technology. Inhal Toxicol 2024; 36:1-12. [PMID: 38175690 DOI: 10.1080/08958378.2023.2300373] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2023] [Accepted: 12/22/2023] [Indexed: 01/05/2024]
Abstract
Background: Paraquat (PQ) plays an important role in agricultural production due to its highly effective herbicidal effect. However, it has led to multiple organ failure in those who have been poisoned, with damage most notable in the lungs and ultimately leading to death. Because of little research has been performed at the genetic level, and therefore, the specific genetic changes caused by PQ exposure are unclear.Methods: Paraquat poisoning model was constructed in Sprague Dawley (SD) rats, and SD rats were randomly divided into Control group, paraquat (PQ) poisoning group and Anthrahydroquinone-2,6-disulfonate (AH2QDS) treatment group. Then, the data was screened and quality controlled, compared with reference genes, optimized gene structure, enriched at the gene expression level, and finally, signal pathways with significantly different gene enrichment were screened.Results: This review reports on lung tissues from paraquat-intoxicated Sprague Dawley (SD) rats that were subjected to RNA-seq, the differentially expressed genes were mainly enriched in PI3K-AKT, cGMP-PKG, MAPK, Focal adhesion and other signaling pathways.Conclusion: The signaling pathways enriched with these differentially expressed genes are summarized, and the important mechanisms mediated through these pathways in acute lung injury during paraquat poisoning are outlined to identify important targets for AH2QDS treatment of acute lung injury due to paraquat exposure, information that will be used to support a subsequent in-depth study on the mechanism of PQ action.
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Affiliation(s)
- Nan Li
- College of Emergency and Trauma, Hainan Medical University, Key Laboratory of Emergency and Trauma of Ministry of Education, The First Affiliated Hospital of Hainan Medical University, Haikou, China
- Key Laboratory of Emergency and Trauma Research, Hainan Medical University, Haikou, China
| | - Yue Huang
- College of Emergency and Trauma, Hainan Medical University, Key Laboratory of Emergency and Trauma of Ministry of Education, The First Affiliated Hospital of Hainan Medical University, Haikou, China
- Key Laboratory of Emergency and Trauma Research, Hainan Medical University, Haikou, China
| | - Yang Yi
- College of Emergency and Trauma, Hainan Medical University, Key Laboratory of Emergency and Trauma of Ministry of Education, The First Affiliated Hospital of Hainan Medical University, Haikou, China
- Key Laboratory of Emergency and Trauma Research, Hainan Medical University, Haikou, China
| | - Jin Qian
- College of Emergency and Trauma, Hainan Medical University, Key Laboratory of Emergency and Trauma of Ministry of Education, The First Affiliated Hospital of Hainan Medical University, Haikou, China
- Key Laboratory of Emergency and Trauma Research, Hainan Medical University, Haikou, China
| | - Qi Li
- College of Emergency and Trauma, Hainan Medical University, Key Laboratory of Emergency and Trauma of Ministry of Education, The First Affiliated Hospital of Hainan Medical University, Haikou, China
- Key Laboratory of Emergency and Trauma Research, Hainan Medical University, Haikou, China
| | - Shuang-Qin Xu
- College of Emergency and Trauma, Hainan Medical University, Key Laboratory of Emergency and Trauma of Ministry of Education, The First Affiliated Hospital of Hainan Medical University, Haikou, China
- Key Laboratory of Emergency and Trauma Research, Hainan Medical University, Haikou, China
| | - Hang-Fei Wang
- College of Emergency and Trauma, Hainan Medical University, Key Laboratory of Emergency and Trauma of Ministry of Education, The First Affiliated Hospital of Hainan Medical University, Haikou, China
- Key Laboratory of Emergency and Trauma Research, Hainan Medical University, Haikou, China
| | - Xin-Xin Wu
- College of Emergency and Trauma, Hainan Medical University, Key Laboratory of Emergency and Trauma of Ministry of Education, The First Affiliated Hospital of Hainan Medical University, Haikou, China
| | - Ji-Chao Peng
- College of Emergency and Trauma, Hainan Medical University, Key Laboratory of Emergency and Trauma of Ministry of Education, The First Affiliated Hospital of Hainan Medical University, Haikou, China
| | - Li-Hua Li
- College of Emergency and Trauma, Hainan Medical University, Key Laboratory of Emergency and Trauma of Ministry of Education, The First Affiliated Hospital of Hainan Medical University, Haikou, China
| | - Jin-Jian Yao
- Emergency Department, Hainan General Hospital, Affiliated to Hainan Medical University, Haikou, China
| | - Xiao-Ran Liu
- College of Emergency and Trauma, Hainan Medical University, Key Laboratory of Emergency and Trauma of Ministry of Education, The First Affiliated Hospital of Hainan Medical University, Haikou, China
- Key Laboratory of Emergency and Trauma Research, Hainan Medical University, Haikou, China
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Xiao X, Chen S, Huang Z, Han X, Dou C, Kang J, Wang T, Xie H, Zhang L, Hei Z, Li H, Yao W. SerpinB1 is required for Rev-erbα-mediated protection against acute lung injury induced by lipopolysaccharide-in mice. Br J Pharmacol 2023; 180:3234-3253. [PMID: 37350044 DOI: 10.1111/bph.16175] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2022] [Revised: 05/05/2023] [Accepted: 06/13/2023] [Indexed: 06/24/2023] Open
Abstract
BACKGROUND AND PURPOSE Acute lung injury (ALI) is a serious, life-threatening inflammation of the lungs that still lacks effective treatment. We previously showed that serine protease inhibitor B1 (SerpinB1) protects against ALI induced by orthotopic autologous liver transplantation. However, the role of SerpinB1 in lipopolysaccharide (LPS)-induced ALI and its regulatory mechanisms are not known. EXPERIMENTAL APPROACH Wild-type (WT) and SerpinB1 knockout (KO) mice were treated with intratracheal LPS stimulation to induce ALI. Some of the WT and KO mice were injected i.p. with melatonin, a rhythm-related protein Rev-erbα agonist. The circadian rhythm in WT mice was disrupted by exposing mice to 24 h of continuous dark or light conditions after intratracheal LPS. Neutrophils were isolated from alveolar lavage fluid of WT and KO mice, and from human peripheral blood. Neutrophils were treated with LPS and melatonin. KEY RESULTS Disruption of circadian rhythm by either 24-h dark or light conditions exacerbated LPS-induced ALI and decreased expression of Rev-erbα and SerpinB1 protein in lung, whereas melatonin treatment increased SerpinB1 expression and attenuated LPS-induced ALI in WT mice, but not in KO mice. In isolated neutrophils, Rev-erbα was co-localized with SerpinB1 and bound to its promoter to trigger SerpinB1 transcription. Furthermore, LPS stimulation increased formation of neutrophil extracellular traps, which was reversed by melatonin treatment in neutrophils from WT mice, but not from KO mice. CONCLUSION AND IMPLICATIONS In mice, SerpinB1 is rhythmically regulated by Rev-erbα, and its down-regulation exacerbates LPS-induced ALI by inducing formation of neutrophil extracellular traps.
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Affiliation(s)
- Xue Xiao
- Department of Anesthesiology, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Sufang Chen
- Department of Anesthesiology, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Ziyan Huang
- Department of Anesthesiology, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Xue Han
- Department of Anesthesiology, Sun Yat-sen Memorial Hospital of Sun Yat-sen University, Guangzhou, China
| | - Chaoxun Dou
- Department of Anesthesiology, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Jiayi Kang
- Corrigan Minehan Heart Center, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - Tienan Wang
- Department of Anesthesiology, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Hanbin Xie
- Department of Anesthesiology, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Linan Zhang
- Department of Anesthesiology, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Ziqing Hei
- Department of Anesthesiology, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Haobo Li
- Corrigan Minehan Heart Center, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - Weifeng Yao
- Department of Anesthesiology, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
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Zhang C, Sheng M, Lv J, Cao Y, Chen D, Jia L, Sun Y, Ren Y, Li L, Weng Y, Yu W. Single-cell analysis reveals the immune heterogeneity and interactions in lungs undergoing hepatic ischemia-reperfusion. Int Immunopharmacol 2023; 124:111043. [PMID: 37844464 DOI: 10.1016/j.intimp.2023.111043] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2023] [Revised: 10/02/2023] [Accepted: 10/08/2023] [Indexed: 10/18/2023]
Abstract
Hepatic ischemia-reperfusion IR (HIR) is an unavoidable pathophysiological process during liver transplantation, resulting in systematic sterile inflammation and remote organ injury. Acute lung injury (ALI) is a serious complication after liver transplantation with high postoperative morbidity and mortality. However, the underlying mechanism is still unclear. To assess the phenotype and plasticity of various cell types in the lung tissue microenvironment after HIR at the single-cell level, single-cell RNA sequencing (scRNA-seq) was performed using the lungs from HIR-induced mice. In our results, we identified 23 cell types in the lungs after HIR and found that this highly complex ecosystem was formed by subpopulations of bone marrow-derived cells that signaled each other and mediated inflammatory responses in different states and different intervals. We described the unique transcriptional profiles of lung cell clusters and discovered two novel cell subtypes (Tspo+Endothelial cells and Vcan+ monocytes), as well as the endothelial cell-immune cell and immune cell-T cell clusters interactome. In addition, we found that S100 calcium binding protein (S100a8/a9), specifically and highly expressed in immune cell clusters of lung tissues and exhibited detrimental effects. Finally, the cellular landscape of the lung tissues after HIR was established, highlighting the heterogeneity and cellular interactions between major immune cells in HIR-induced lungs. Our findings provided new insights into the mechanisms of HIR-induced ALI and offered potential therapeutic target to prevent ALI after liver transplantation.
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Affiliation(s)
- Chen Zhang
- The First Central Clinical School, Tianjin Medical University, Tianjin 300052, China; Department of Anesthesiology, Tianjin First Central Hospital, Tianjin 300192, China
| | - Mingwei Sheng
- Department of Anesthesiology, Tianjin First Central Hospital, Tianjin 300192, China
| | - Jingshu Lv
- Department of Anesthesiology, Tianjin First Central Hospital, Tianjin 300192, China
| | - Yingli Cao
- School of Medical, Nankai University, Tianjin 300071, China
| | - Dapeng Chen
- The First Central Clinical School, Tianjin Medical University, Tianjin 300052, China
| | - Lili Jia
- Department of Anesthesiology, Tianjin First Central Hospital, Tianjin 300192, China
| | - Ying Sun
- Department of Anesthesiology, Tianjin First Central Hospital, Tianjin 300192, China
| | - Yinghui Ren
- Department of Anesthesiology, Tianjin First Central Hospital, Tianjin 300192, China
| | - Lian Li
- College of Life Sciences, Nankai University, Tianjin 300071, China
| | - Yiqi Weng
- Department of Anesthesiology, Tianjin First Central Hospital, Tianjin 300192, China
| | - Wenli Yu
- The First Central Clinical School, Tianjin Medical University, Tianjin 300052, China; Department of Anesthesiology, Tianjin First Central Hospital, Tianjin 300192, China.
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Lan Q, Wang K, Meng Z, Lin H, Zhou T, Lin Y, Jiang Z, Chen J, Liu X, Lin Y, Lin D. Roxadustat promotes hypoxia-inducible factor-1α/vascular endothelial growth factor signalling to enhance random skin flap survival in rats. Int Wound J 2023; 20:3586-3598. [PMID: 37225176 PMCID: PMC10588316 DOI: 10.1111/iwj.14235] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2023] [Revised: 05/03/2023] [Accepted: 05/04/2023] [Indexed: 05/26/2023] Open
Abstract
Random skin flaps have limited clinical application as a broad surgical reconstruction treatment because of distal necrosis. The prolyl hydroxylase domain-containing protein inhibitor roxadustat (RXD) enhances angiogenesis and reduces oxidative stress and inflammation. This study explored the function of RXD in the survival of random skin flaps. Thirty-six male Sprague-Dawley rats were randomly divided into low-dose RXD group (L-RXD group, 10 mg/kg/2 day), high-dose RXD group (H-RXD group, 25 mg/kg/2 day), and control group (1 mL of solvent, 1:9 DMSO:corn oil). The proportion of surviving flaps was determined on day 7 after surgery. Angiogenesis was assessed by lead oxide/gelatin angiography, and microcirculation blood perfusion was evaluated by laser Doppler flow imaging. Specimens in zone II were obtained, and the contents of superoxide dismutase (SOD) and malondialdehyde (MDA) were measured as indicators of oxidative stress. Histopathological status was evaluated with haematoxylin and eosin staining. The levels of hypoxia-inducible factor-1α (HIF-1α), vascular endothelial growth factor (VEGF), and the inflammatory factors interleukin (IL)-1β, IL-6, and tumour necrosis factor-α (TNF-α) were detected by immunohistochemistry. RXD promoted flap survival and microcirculatory blood perfusion. Angiogenesis was detected distinctly in the experimental group. SOD activity increased and the MDA level decreased in the experimental group. Immunohistochemistry indicated that the expression levels of HIF-1α and VEGF were increased while the levels of IL-6, IL-1β, and TNF-α were decreased after RXD injection. RXD promoted random flap survival by reinforcing vascular hyperplasia and decreasing inflammation and ischaemia-reperfusion injury.
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Affiliation(s)
- Qicheng Lan
- Department of Hand and Plastic SurgeryThe Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, The Second School of Medicine, Wenzhou Medical UniversityWenzhouChina
- Department of Pulmonary and Critical Care MedicineThe First Affiliated Hospital of Wenzhou Medical University, The First School of Clinical Medical, Wenzhou Medical UniversityWenzhouChina
| | - Kaitao Wang
- Department of Hand and Plastic SurgeryThe Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, The Second School of Medicine, Wenzhou Medical UniversityWenzhouChina
| | - Zhefeng Meng
- Department of Hand and Plastic SurgeryThe Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, The Second School of Medicine, Wenzhou Medical UniversityWenzhouChina
| | - Hang Lin
- Department of Pulmonary and Critical Care MedicineThe First Affiliated Hospital of Wenzhou Medical University, The First School of Clinical Medical, Wenzhou Medical UniversityWenzhouChina
| | - Taotao Zhou
- Department of Hand and Plastic SurgeryThe Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, The Second School of Medicine, Wenzhou Medical UniversityWenzhouChina
| | - Yi Lin
- Department of Hand and Plastic SurgeryThe Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, The Second School of Medicine, Wenzhou Medical UniversityWenzhouChina
| | - Zhikai Jiang
- Department of Hand and Plastic SurgeryThe Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, The Second School of Medicine, Wenzhou Medical UniversityWenzhouChina
| | - Jianpeng Chen
- Department of Hand and Plastic SurgeryThe Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, The Second School of Medicine, Wenzhou Medical UniversityWenzhouChina
| | - Xuao Liu
- Department of Hand and Plastic SurgeryThe Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, The Second School of Medicine, Wenzhou Medical UniversityWenzhouChina
| | - Yuting Lin
- Department of Pulmonary and Critical Care MedicineThe First Affiliated Hospital of Wenzhou Medical University, The First School of Clinical Medical, Wenzhou Medical UniversityWenzhouChina
| | - Dingsheng Lin
- Department of Hand and Plastic SurgeryThe Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, The Second School of Medicine, Wenzhou Medical UniversityWenzhouChina
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Tirunavalli SK, Pramatha S, Eedara AC, Walvekar KP, Immanuel C, Potdar P, Nayak PG, Chamallamudi MR, Sistla R, Chilaka S, Andugulapati SB. Protective effect of β-glucan on Poly(I:C)-induced acute lung injury/inflammation: Therapeutic implications of viral infections in the respiratory system. Life Sci 2023; 330:122027. [PMID: 37597767 DOI: 10.1016/j.lfs.2023.122027] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2023] [Revised: 07/27/2023] [Accepted: 08/15/2023] [Indexed: 08/21/2023]
Abstract
AIMS Acute lung inflammation, particularly acute respiratory distress syndrome (ARDS), is caused by a variety of pathogens including bacteria and viruses. β-Glucans have been reported to possess both anti-inflammatory and immunomodulatory properties. The current study evaluated the therapeutic effect of β-glucans on polyinosinic:polycytidylic acid (Poly(I:C)) induced lung inflammation in both hamster and mice models. MAIN METHODS Poly(I:C)-induced ALI/inflammation models were developed in hamsters (2.5 mg/kg) and mice (2 mg/kg) by delivering the Poly(I:C) intratracheally, and followed with and without β-glucan administration. After treatment, lung mechanics were assessed and lung tissues were isolated and analyzed for mRNA/protein expression, and histopathological examinations. KEY FINDINGS Poly(I:C) administration, caused a significant elevation of inflammatory marker's expression in lung tissues and showed abnormal lung mechanics in mice and hamsters. Interestingly, treatment with β-glucan significantly (p < 0.001) reversed the Poly(I:C)-induced inflammatory events and inflammatory markers expression in both mRNA (IL-6, IL-1β, TNF-α, CCL2 and CCL7) and protein levels (TNF-α, CD68, myeloperoxidase, neutrophil elastase, MUC-5Ac and iNOS). Lung functional assays revealed that β-glucan treatment significantly improved lung mechanics. Histopathological analysis showed that β-glucan treatment significantly attenuated the Poly(I:C) induced inflammatory cell infiltration, injury and goblet cell population in lung tissues. Consistent with these findings, β-glucan treatment markedly reduced the number of neutrophils and macrophages in lung tissues. Our findings further demonstrated that β-glucan could reduce inflammation by suppressing the MAPK pathway. SIGNIFICANCE These results suggested that β-glucan may attenuate the pathogenic effects of Poly(I:C)-induced ALI/ARDS via modulating the MAPK pathway, indicating β-glucan as a possible therapeutic agent for the treatment of viral-pulmonary inflammation/injury.
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Affiliation(s)
- Satya Krishna Tirunavalli
- Division of Applied Biology, CSIR-Indian Institute of Chemical Technology, Hyderabad 500 007, Telangana, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh 201 002, India
| | - Shashidhar Pramatha
- Department of Pharmacology, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal, Udupi 576104, Karnataka, India
| | - Abhisheik Chowdary Eedara
- Division of Applied Biology, CSIR-Indian Institute of Chemical Technology, Hyderabad 500 007, Telangana, India
| | - Komal Paresh Walvekar
- Division of Applied Biology, CSIR-Indian Institute of Chemical Technology, Hyderabad 500 007, Telangana, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh 201 002, India
| | - Christiana Immanuel
- Division of Applied Biology, CSIR-Indian Institute of Chemical Technology, Hyderabad 500 007, Telangana, India
| | - Pooja Potdar
- Division of Applied Biology, CSIR-Indian Institute of Chemical Technology, Hyderabad 500 007, Telangana, India
| | - Pawan G Nayak
- Department of Pharmacology, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal, Udupi 576104, Karnataka, India
| | - Mallikarjuna Rao Chamallamudi
- Department of Pharmacology, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal, Udupi 576104, Karnataka, India
| | - Ramakrishna Sistla
- Division of Applied Biology, CSIR-Indian Institute of Chemical Technology, Hyderabad 500 007, Telangana, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh 201 002, India
| | - Sabarinadh Chilaka
- Division of Applied Biology, CSIR-Indian Institute of Chemical Technology, Hyderabad 500 007, Telangana, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh 201 002, India.
| | - Sai Balaji Andugulapati
- Division of Applied Biology, CSIR-Indian Institute of Chemical Technology, Hyderabad 500 007, Telangana, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh 201 002, India.
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Ding Y, Xu X, Meng B, Wang L, Zhu B, Guo B, Zhang J, Xiang L, Dong J, Liu M, Xiang G. Myeloid-derived growth factor alleviates non-alcoholic fatty liver disease alleviates in a manner involving IKKβ/NF-κB signaling. Cell Death Dis 2023; 14:376. [PMID: 37365185 DOI: 10.1038/s41419-023-05904-y] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2023] [Revised: 05/31/2023] [Accepted: 06/16/2023] [Indexed: 06/28/2023]
Abstract
Whether bone marrow modulates systemic metabolism remains unknown. Our recent study suggested that myeloid-derived growth factor (MYDGF) improves insulin resistance. Here, we found that myeloid cell-specific MYDGF deficiency aggravated hepatic inflammation, lipogenesis, and steatosis, and show that myeloid cell-derived MYDGF restoration alleviated hepatic inflammation, lipogenesis, and steatosis. Additionally, recombinant MYDGF attenuated inflammation, lipogenesis, and fat deposition in primary mouse hepatocytes (PMHs). Importantly, inhibitor kappa B kinase beta/nuclear factor-kappa B (IKKβ/NF-κB) signaling is involved in protection of MYDGF on non-alcoholic fatty liver disease (NAFLD). These data revealed that myeloid cell-derived MYDGF alleviates NAFLD and inflammation in a manner involving IKKβ/NF-κB signaling, and serves as a factor involved in the crosstalk between the liver and bone marrow that regulates liver fat metabolism. Bone marrow functions as an endocrine organ and serves as a potential therapeutic target for metabolic disorders.
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Affiliation(s)
- Yan Ding
- Department of Endocrinology, General Hospital of Central Theater Command, Wuluo Road 627, Wuhan, 430070, Hubei Province, China
- Department of Diagnostics, School of Medicine, Hunan University of Medicine, Huaihua, 418000, Hunan Province, China
| | - Xiaoli Xu
- Department of Endocrinology, General Hospital of Central Theater Command, Wuluo Road 627, Wuhan, 430070, Hubei Province, China
- The First School of Clinical Medicine, Southern Medical University, NO.1023, South Shatai Road, Guangzhou, 510515, Guangdong Province, China
| | - Biying Meng
- Department of Endocrinology, General Hospital of Central Theater Command, Wuluo Road 627, Wuhan, 430070, Hubei Province, China
- The First School of Clinical Medicine, Southern Medical University, NO.1023, South Shatai Road, Guangzhou, 510515, Guangdong Province, China
| | - Li Wang
- Department of Endocrinology, General Hospital of Central Theater Command, Wuluo Road 627, Wuhan, 430070, Hubei Province, China
| | - Biao Zhu
- Department of Endocrinology, General Hospital of Central Theater Command, Wuluo Road 627, Wuhan, 430070, Hubei Province, China
| | - Bei Guo
- Department of Endocrinology, General Hospital of Central Theater Command, Wuluo Road 627, Wuhan, 430070, Hubei Province, China
| | - Jiajia Zhang
- Department of Endocrinology, General Hospital of Central Theater Command, Wuluo Road 627, Wuhan, 430070, Hubei Province, China
| | - Lin Xiang
- Department of Endocrinology, General Hospital of Central Theater Command, Wuluo Road 627, Wuhan, 430070, Hubei Province, China
| | - Jing Dong
- Department of Endocrinology, General Hospital of Central Theater Command, Wuluo Road 627, Wuhan, 430070, Hubei Province, China
| | - Min Liu
- Department of Endocrinology, General Hospital of Central Theater Command, Wuluo Road 627, Wuhan, 430070, Hubei Province, China
| | - Guangda Xiang
- Department of Endocrinology, General Hospital of Central Theater Command, Wuluo Road 627, Wuhan, 430070, Hubei Province, China.
- The First School of Clinical Medicine, Southern Medical University, NO.1023, South Shatai Road, Guangzhou, 510515, Guangdong Province, China.
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9
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Wang Y, Ning Z, Yang L, Wang T. Construction and validation of a pulmonary complication score for patients after liver transplantation. Clin Transplant 2023; 37:e14872. [PMID: 36444148 DOI: 10.1111/ctr.14872] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2022] [Revised: 11/10/2022] [Accepted: 11/25/2022] [Indexed: 11/30/2022]
Abstract
PURPOSE Identification of preoperative risk factors associated with pulmonary complications may benefit high-risk patients from more intense surveillance and earlier interventions in liver transplantation (LT). Our study aimed to identify risk factors for predicting pulmonary complications in LT patients. MATERIALS AND METHODS The discovery data set enrolled 208 patients who underwent orthotopic LT while the validation data set included 117 patients. Clinical data were collected from medical history retrospectively and risk factors were determined by logistic regression analyses. The pulmonary complication score (PCS-LT) was established and validated for predicting pulmonary complications after LT. RESULTS In the discovery data set, 47 (22.6%) participants experienced pulmonary complications following LT. Four independent risk factors for pulmonary complications were identified by multivariate logistic regression analysis, including preoperative abnormal pulmonary function (OR = 4.743, p < .001), elevated lymphocyte count (OR = 2.336, p = .027), hypoproteinemia (OR = 2.635, p = .030), and hypokalemia (OR = 5.257, p = .003), and PCS-LT based on these factors was established. ROC analyses showed PCS-LT could predict PC in both the discovery data set (area under curve [AUC] .752, 95% confidence interval [CI] .687-.809) and the validation data set (AUC .754, 95% CI, .666-.829). The PCS-LT demonstrated superior predictive value (AUC .735, 95% CI, .703-.799) to APACHE II score (AUC .653, 95% CI, .599-.705) in the combined data set (p = .032). Meanwhile, PCS-LT > 1 was used as the cut-off value and has prognostic significance in LT patients. CONCLUSIONS The PCS-LT score, consisting of abnormal pulmonary function, elevated lymphocyte count, hypoproteinemia, and hypokalemia, could predict pulmonary complications after LT.
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Affiliation(s)
- Ying Wang
- Department of Critical Care Medicine, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Zhenning Ning
- Department of Critical Care Medicine, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Liuxiao Yang
- Department of Critical Care Medicine, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Ting Wang
- Department of Critical Care Medicine, Zhongshan Hospital, Fudan University, Shanghai, China
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10
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Wang H, Hua J, Chen S, Chen Y. SERPINB1 overexpression protects myocardial damage induced by acute myocardial infarction through AMPK/mTOR pathway. BMC Cardiovasc Disord 2022; 22:107. [PMID: 35291946 PMCID: PMC8925243 DOI: 10.1186/s12872-022-02454-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2021] [Accepted: 01/03/2022] [Indexed: 11/23/2022] Open
Abstract
Background SERPINB1 is involved in the development of a variety of diseases. The purpose of this study was to explore the effect of SERPINB1 on acute myocardial infarction (AMI). Methods Serum SERPINB1 level of AMI patients was measured for receiver operating characteristic curve analysis. The AMI rat model was constructed to observe myocardial damage, and the H9C2 cell oxygen glucose deprivation (OGD) model was constructed to detect cell viability. Transthoracic echocardiography was used to assess the cardiac function. TTC staining and HE staining were used to detect pathologic changes of myocardial tissues. The apoptosis of myocardial tissues and cells were measured by TUNLE staining and flow cytometry assay. CCK-8 assay to measure cell viability. SERPINB1 expression was measured by qRT-PCR. Protein expression was measured by western blot. Results The serum SERPINB1 level was down-regulated in AMI patients. AMI modeling reduced the SERPINB1 expression level, induced inflammatory cells infiltrated, and myocardial apoptosis. OGD treatment inhibited cell viability and promoted apoptosis. The AMPK/mTOR pathway was inhibited in AMI rats and OGD-treated H9C2 cells. Overexpression of SERPINB1 reduced infarct size and myocardial apoptosis of AMI rats, inhibited apoptosis of H9C2 cells, and activated AMPK/mTOR pathway. However, AMPK inhibitor Dorsomorphin reversed the protective effect of SERPINB1 on myocardial cells. Conclusion SERPINB1 overexpression relieved myocardial damage induced by AMI via AMPK/mTOR pathway.
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Affiliation(s)
- Hongliang Wang
- Department of Cardiovasology, First People's Hospital of Jinan, Jinan, 250000, Shandong, People's Republic of China
| | - Jun Hua
- Department of Clinical Laboratory, Gaotang County People's Hospital, Liaocheng, 252800, Shandong, People's Republic of China
| | - Shiyuan Chen
- Department of Breast and Thyroid Surgery, Dongying People's Hospital, Dongying, 257091, Shandong, People's Republic of China
| | - Ying Chen
- Department of Clinical Laboratory, Central Hospital of Shengli Oilfield, No. 31 Jinan Road, Dongying, 257000, Shandong, People's Republic of China.
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11
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Tolomeo AM, Fabozzo A, Malvicini R, De Lazzari G, Bisaccia P, Gaburro G, Arcidiacono D, Notarangelo D, Caicci F, Zanella F, Marchesan M, Yannarelli G, Santovito G, Muraca M, Gerosa G. Temperature-Related Effects of Myocardial Protection Strategies in Swine Hearts after Prolonged Warm Ischemia. Antioxidants (Basel) 2022; 11:antiox11030476. [PMID: 35326125 PMCID: PMC8944743 DOI: 10.3390/antiox11030476] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2022] [Revised: 02/22/2022] [Accepted: 02/24/2022] [Indexed: 02/04/2023] Open
Abstract
Insufficient supply of cardiac grafts represents a severe obstacle in heart transplantation. Donation after circulatory death (DCD), in addition to conventional donation after brain death, is one promising option to overcome the organ shortage. However, DCD organs undergo an inevitably longer period of unprotected warm ischemia between circulatory arrest and graft procurement. In this scenario, we aim to improve heart preservation after a warm ischemic period of 20 min by testing different settings of myocardial protective strategies. Pig hearts were collected from a slaughterhouse and assigned to one of the five experimental groups: baseline (BL), cold cardioplegia (CC), cold cardioplegia + adenosine (CC-ADN), normothermic cardioplegia (NtC + CC) or normothermic cardioplegia + cold cardioplegia + adenosine (NtC-ADN + CC). After treatment, tissue biopsies were taken to assess mitochondrial morphology, antioxidant enzyme activity, lipid peroxidation and cytokine and chemokine expressions. NtC + CC treatment significantly prevented mitochondria swelling and mitochondrial cristae loss. Moreover, the antioxidant enzyme activity was lower in this group, as was lipid peroxidation, and the pro-inflammatory chemokine GM-CSF was diminished. Finally, we demonstrated that normothermic cardioplegia preserved mitochondria morphology, thus preventing oxidative stress and the subsequent inflammatory response. Therefore, normothermic cardioplegia is a better approach to preserve the heart after a warm ischemia period, with respect to cold cardioplegia, before transplantation.
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Affiliation(s)
- Anna Maria Tolomeo
- Department of Cardiac, Thoracic and Vascular Science and Public Health, University of Padova, 35128 Padua, Italy; (A.M.T.); (D.N.); (G.G.)
- L.i.f.e.L.a.b. Program, Consorzio per la Ricerca Sanitaria (CORIS), Veneto Region, 35128 Padua, Italy; (R.M.); (G.D.L.); (M.M.)
| | - Assunta Fabozzo
- L.i.f.e.L.a.b. Program, Consorzio per la Ricerca Sanitaria (CORIS), Veneto Region, 35128 Padua, Italy; (R.M.); (G.D.L.); (M.M.)
- Cardiac Surgery Unit, Hospital University of Padova, 35128 Padua, Italy;
- Correspondence: ; Tel.: +39-049-8212413
| | - Ricardo Malvicini
- L.i.f.e.L.a.b. Program, Consorzio per la Ricerca Sanitaria (CORIS), Veneto Region, 35128 Padua, Italy; (R.M.); (G.D.L.); (M.M.)
- Department of Women’s and Children’s Health, University of Padova, 35128 Padua, Italy;
- Instituto de Medicina Traslacional, Trasplante y Bioingeniería (IMeTTyB) CONICET—Universidad Favaloro), Buenos Aires 1078, Argentina;
| | - Giada De Lazzari
- L.i.f.e.L.a.b. Program, Consorzio per la Ricerca Sanitaria (CORIS), Veneto Region, 35128 Padua, Italy; (R.M.); (G.D.L.); (M.M.)
- Department of Women’s and Children’s Health, University of Padova, 35128 Padua, Italy;
| | - Paola Bisaccia
- Department of Women’s and Children’s Health, University of Padova, 35128 Padua, Italy;
| | - Gianluca Gaburro
- Department of Biology, University of Padova, 35128 Padua, Italy; (G.G.); (F.C.); (G.S.)
| | - Diletta Arcidiacono
- Gastroenterology Unit, Veneto Institute of Oncology IOV-IRCCS, 35128 Padua, Italy;
| | - Denni Notarangelo
- Department of Cardiac, Thoracic and Vascular Science and Public Health, University of Padova, 35128 Padua, Italy; (A.M.T.); (D.N.); (G.G.)
| | - Federico Caicci
- Department of Biology, University of Padova, 35128 Padua, Italy; (G.G.); (F.C.); (G.S.)
| | - Fabio Zanella
- Cardiac Surgery Unit, Hospital University of Padova, 35128 Padua, Italy;
| | | | - Gustavo Yannarelli
- Instituto de Medicina Traslacional, Trasplante y Bioingeniería (IMeTTyB) CONICET—Universidad Favaloro), Buenos Aires 1078, Argentina;
| | - Gianfranco Santovito
- Department of Biology, University of Padova, 35128 Padua, Italy; (G.G.); (F.C.); (G.S.)
| | - Maurizio Muraca
- L.i.f.e.L.a.b. Program, Consorzio per la Ricerca Sanitaria (CORIS), Veneto Region, 35128 Padua, Italy; (R.M.); (G.D.L.); (M.M.)
- Department of Women’s and Children’s Health, University of Padova, 35128 Padua, Italy;
| | - Gino Gerosa
- Department of Cardiac, Thoracic and Vascular Science and Public Health, University of Padova, 35128 Padua, Italy; (A.M.T.); (D.N.); (G.G.)
- L.i.f.e.L.a.b. Program, Consorzio per la Ricerca Sanitaria (CORIS), Veneto Region, 35128 Padua, Italy; (R.M.); (G.D.L.); (M.M.)
- Cardiac Surgery Unit, Hospital University of Padova, 35128 Padua, Italy;
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TNF- α Induces Neutrophil Apoptosis Delay and Promotes Intestinal Ischemia-Reperfusion-Induced Lung Injury through Activating JNK/FoxO3a Pathway. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2022; 2021:8302831. [PMID: 35003520 PMCID: PMC8731283 DOI: 10.1155/2021/8302831] [Citation(s) in RCA: 22] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/21/2021] [Accepted: 11/30/2021] [Indexed: 12/11/2022]
Abstract
Background Intestinal ischemia is a common clinical critical illness. Intestinal ischemia-reperfusion (IIR) leads to acute lung injury (ALI), but the causative factors of ALI are unknown. The aim of this study was to reveal the causative factors and mechanisms of IIR-induced lung injury. Methods A mouse model of IIR was developed using C57BL/6 mice, followed by detection of lung injury status and plasma levels of inflammatory factors in sham-operated mice and model mice. Some model mice were treated with a tumor necrosis factor-α (TNF-α) inhibitor lenalidomide (10 mg/kg), followed by observation of lung injury status through hematoxylin and eosin staining and detection of neutrophil infiltration levels through naphthol esterase and Ly6G immunohistochemical staining. Additionally, peripheral blood polymorphonuclear neutrophils (PMNs) were cultured in vitro and then stimulated by TNF-α to mimic in vivo inflammatory stimuli; this TNF-α stimulation was also performed on PMNs after knockdown of FoxO3a or treatment with the c-Jun N-terminal kinase (JNK) inhibitor SP600125. PMN apoptosis after stimulation was detected using flow cytometry. Finally, the role of PMN apoptosis in IIR-induced lung injury was evaluated in vivo by detecting the ALI status in the model mice administered with ABT-199, a Bcl-2 inhibitor. Results IIR led to pulmonary histopathological injury and increased lung water content, which were accompanied by increased plasma levels of inflammatory factors, with the TNF-α plasma level showing the most pronounced increase. Inhibition of TNF-α led to effective reduction of lung tissue injury, especially that of the damaging infiltration of PMNs in the lung. In vitro knockdown of FoxO3a or inhibition of JNK activity could inhibit TNF-α-induced PMN apoptosis. Further in vivo experiments revealed that ABT-199 effectively alleviated lung injury and decreased inflammation levels by promoting PMN apoptosis during IIR-induced lung injury. Conclusion TNF-α activates the JNK/FoxO3a pathway to induce a delay in PMN apoptosis, which promotes IIR-induced lung injury.
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Li J, Xue L, Wu Y, Yang Q, Liu D, Yu C, Peng J. STAT3-activated lncRNA XIST accelerates the inflammatory response and apoptosis of LPS-induced acute lung injury. J Cell Mol Med 2021; 25:6550-6557. [PMID: 34114724 PMCID: PMC8278113 DOI: 10.1111/jcmm.16653] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2020] [Revised: 03/22/2021] [Accepted: 04/28/2021] [Indexed: 12/19/2022] Open
Abstract
Acute lung injury (ALI) is a severe lung respiratory failure characterized by high morbidity and mortality. Novel findings demonstrated the critical roles of long non-coding RNA (lncRNA) in ALI. Here, we tried to investigate the roles and potential mechanism of lncRNA X-inactive specific transcript (XIST) in ALI. Results illustrated that lncRNA XIST was up-regulated in the lipopolysaccharide (LPS)-induced ALI mice models and pulmonary endothelial cells. Biofunctional assays unveiled that knockdown of XIST repressed the inflammatory response and apoptosis in LPS-induced endothelial cells. Mechanistically, XIST acted as the miR-146a-5p sponge to positively regulate STAT3. Moreover, STAT3 combined the promoter region of XIST to accelerate the transcription, constituting the positive feedback loop of XIST/miR-146a-5p/STAT3 in ALI. Collectively, these findings suggested that XIST knockdown attenuates the LPS-induced ALI, providing a potential therapeutic target.
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Affiliation(s)
- Jun Li
- Department of Thoracic SurgeryThe Third Affiliated Hospital of Southern Medical UniversityGuangzhouChina
| | - Lei Xue
- Department of Thoracic SurgeryThe Third Affiliated Hospital of Southern Medical UniversityGuangzhouChina
| | - Yunfei Wu
- Department of Thoracic SurgeryThe Affiliated Hospital of Southwest Medical UniversityLuzhouChina
| | - Qiang Yang
- Department of Thoracic SurgeryThe Third Affiliated Hospital of Southern Medical UniversityGuangzhouChina
| | - Degang Liu
- Department of Thoracic SurgeryThe Third Affiliated Hospital of Southern Medical UniversityGuangzhouChina
| | - Changhui Yu
- Department of Respiratory and Critical Care MedicineChronic Airways Diseases LaboratoryNanfang HospitalSouthern Medical UniversityGuangzhouChina
| | - Jiangzhou Peng
- Department of Thoracic SurgeryThe Third Affiliated Hospital of Southern Medical UniversityGuangzhouChina
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14
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Li X, Xia WY, Jiang F, Liu DY, Lei SQ, Xia ZY, Wu QP. Review of the risk factors for SARS-CoV-2 transmission. World J Clin Cases 2021; 9:1499-1512. [PMID: 33728294 PMCID: PMC7942044 DOI: 10.12998/wjcc.v9.i7.1499] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/27/2020] [Revised: 12/22/2020] [Accepted: 01/22/2021] [Indexed: 02/06/2023] Open
Abstract
The severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) pandemic, which has lasted for nearly a year, has made people deeply aware of the strong transmissibility and pathogenicity of SARS-CoV-2 since its outbreak in December 2019. By December 2020, SARS-CoV-2 had infected over 65 million people globally, resulting in more than 1 million deaths. At present, the exact animal origin of SARS-CoV-2 remains unclear and antiviral vaccines are now undergoing clinical trials. Although the social order of human life is gradually returning to normal, new confirmed cases continue to appear worldwide, and the majority of cases are sporadic due to environmental factors and lax self-protective consciousness. This article provides the latest understanding of the epidemiology and risk factors of nosocomial and community transmission of SARS-CoV-2, as well as strategies to diminish the risk of transmission. We believe that our review will help the public correctly understand and cope with SARS-CoV-2.
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Affiliation(s)
- Xia Li
- Department of Anaesthesiology, Institute of Anaesthesiology and Critical Care Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, Hubei Province, China
| | - Wei-Yi Xia
- Poznan University of Medical Science, Poznan 60-781, Poland
| | - Fang Jiang
- Department of Anesthesiology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, China
| | - Dan-Yong Liu
- Department of Anesthesiology, Affiliated Hospital of Guangdong Medical University, Zhanjiang 524000, Guangdong Province, China
| | - Shao-Qing Lei
- Department of Anesthesiology, Renmin Hospital of Wuhan University, Wuhan 430060, Hubei Province, China
| | - Zheng-Yuan Xia
- Department of Anesthesiology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, China
| | - Qing-Ping Wu
- Department of Anaesthesiology, Institute of Anaesthesiology and Critical Care Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, Hubei Province, China
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15
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Zhang Y, Pan Q, Cheng Y, Liu Y. Effects of SP600125 and hypothermic machine perfusion on livers donated after cardiac death in a pig allograft transplantation model. Eur J Med Res 2021; 26:15. [PMID: 33546770 PMCID: PMC7863371 DOI: 10.1186/s40001-020-00472-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2019] [Accepted: 12/14/2020] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND Hypothermic machine perfusion (HMP) improves the quality of donor livers for transplantation, both in animal models and in clinical practice. Treatment with SP600125, an inhibitor of c-Jun N-terminal kinase (JNK), can suppress the JNK signaling pathway to alleviate donor liver ischemia-reperfusion injury (IRI). We performed the present study with the objective of exploring the protective effects exerted by a combination of HMP and SP600125 on liver xenograft viability for donation after cardiac death (DCD) in a porcine model. METHODS 54 adult BAMA mini-pigs were randomly assigned to 5 groups, including sham, cold storage for 4 h (CS 4 h), CS 4 h + SP600125, CS 2 h + HMP 2 h, and CS 2 h + HMP 2 h + SP600125 groups. Donor livers in the CS 4 h and CS 4 h + SP600125 groups were conventionally cold preserved for 4 h, whereas donor livers in the CS 2 h + HMP 2 h and CS 2 h + HMP 2 h + SP600125 groups were cold preserved for 2 h and then treated with HMP for 2 h. The preservation and perfusion solutions contained SP600125 (20 µM). Follow-up was conducted for 5 days after liver transplantation to compare the surgical outcomes by means of serological examination, pathological results, and survival rate. RESULTS The most satisfactory outcome after liver transplantation was observed in the CS 2 h + HMP 2 h + SP600125 group, which presented with minimal damage of donor livers during 5 days' follow-up. Additionally, serological examination, pathological results, and survival rate concurred in showing better results in the CS 2 h + HMP 2 h ± SP600125 group than in the CS 4 h ± SP600125 group. CONCLUSION HMP in combination with SP600125 has hepatoprotective properties and improves the quality and viability of porcine livers collected after DCD, thus improving prognosis after liver transplantation.
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Affiliation(s)
- Yijie Zhang
- Department of Organ Transplantation and Hepatobiliary, The First Affiliated Hospital of China Medical University, No. 155, Nanjing Street, Shenyang, 110001, Liaoning, People's Republic of China.,The Key Laboratory of Organ Transplantation of Liaoning Province, The First Affiliated Hospital of China Medical University, No. 155, Nanjing Street, Shenyang, 110001, Liaoning, People's Republic of China
| | - Qi Pan
- Department of Organ Transplantation and Hepatobiliary, The First Affiliated Hospital of China Medical University, No. 155, Nanjing Street, Shenyang, 110001, Liaoning, People's Republic of China.,The Key Laboratory of Organ Transplantation of Liaoning Province, The First Affiliated Hospital of China Medical University, No. 155, Nanjing Street, Shenyang, 110001, Liaoning, People's Republic of China
| | - Ying Cheng
- Department of Organ Transplantation and Hepatobiliary, The First Affiliated Hospital of China Medical University, No. 155, Nanjing Street, Shenyang, 110001, Liaoning, People's Republic of China.,The Key Laboratory of Organ Transplantation of Liaoning Province, The First Affiliated Hospital of China Medical University, No. 155, Nanjing Street, Shenyang, 110001, Liaoning, People's Republic of China
| | - Yongfeng Liu
- Department of Organ Transplantation and Hepatobiliary, The First Affiliated Hospital of China Medical University, No. 155, Nanjing Street, Shenyang, 110001, Liaoning, People's Republic of China. .,The Key Laboratory of Organ Transplantation of Liaoning Province, The First Affiliated Hospital of China Medical University, No. 155, Nanjing Street, Shenyang, 110001, Liaoning, People's Republic of China.
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16
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Meng F, Zhang Z, Chen C, Liu Y, Yuan D, Hei Z, Luo G. PI3K/AKT activation attenuates acute kidney injury following liver transplantation by inducing FoxO3a nuclear export and deacetylation. Life Sci 2021; 272:119119. [PMID: 33508296 DOI: 10.1016/j.lfs.2021.119119] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2020] [Revised: 01/12/2021] [Accepted: 01/20/2021] [Indexed: 11/17/2022]
Abstract
AIMS Acute kidney injury (AKI) is a severe complication of autologous orthotopic liver transplantation (AOLT). Apoptosis has been shown to be involved in renal ischemia/reperfusion, and the PI3K/AKT signaling pathway is involved in numerous cell processes, including promoting cell survival and inhibiting apoptosis. We aimed to verify whether the PI3K/AKT signaling pathway participates in the development of post-AOLT AKI. METHODS Male Sprague-Dawley rats underwent AOLT with or without treatment with insulin-like growth factor-1 (IGF-1, a PI3K/AKT activator) and LY294002 (a PI3K/AKT inhibitor; n = 8/group). NRK-52E cells (rat renal tubular epithelial cell line) were subjected to hypoxia-re-oxygenation to mimic renal cell I/R injury in vitro, and confirm whether silencing information regulator 1 (SIRT1) mediated the protective effects of PI3K/AKT by deacetylating forkhead protein O3a (FoxO3a). KEY FINDINGS During the reperfusion stage, kidney injury peaked at 8 h after reperfusion, then gradually recovered, which was consistent with the dynamic changes in apoptosis and the protein expressions of Bcl-2 interacting mediator of cell death (Bim), Fas ligand (FasL), and nuclear FoxO3a AKT phosphorylation and nuclear SIRT1 protein expression were also upregulated. IGF-1 application decreased Bim, FasL, and nuclear FoxO3a protein expressions, and protected against apoptosis and AKI. In NRK-52E cells, IGF-1 upregulated nuclear SIRT1 expression, reduced FoxO3a acetylation, downregulated Bim and FasL protein expressions, and attenuated apoptosis and AKI; these effects were reversed by SIRT1 blocking. CONCLUSION The activation of the PI3K/AKT signaling pathway not only induced FoxO3a nuclear export but also deacetylation through upregulating nuclear SIRT1 expression to attenuate post-AOLT AKI.
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Affiliation(s)
- Fanbing Meng
- Department of Anesthesiology, the Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou 510630, China; Department of Anesthesiology, the Second Affiliated Hospital of Zhejiang University, Hangzhou 310009, China
| | - Zheng Zhang
- Department of Anesthesiology, the Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou 510630, China
| | - Chaojin Chen
- Department of Anesthesiology, the Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou 510630, China
| | - Yue Liu
- Department of Anesthesiology, the Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou 510630, China
| | - Dongdong Yuan
- Department of Anesthesiology, the Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou 510630, China.
| | - Ziqing Hei
- Department of Anesthesiology, the Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou 510630, China.
| | - Gangjian Luo
- Department of Anesthesiology, the Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou 510630, China.
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Ding Q, Zhu W, Diao Y, Xu G, Wang L, Qu S, Shi Y. Elucidation of the Mechanism of Action of Ginseng Against Acute Lung Injury/Acute Respiratory Distress Syndrome by a Network Pharmacology-Based Strategy. Front Pharmacol 2021; 11:611794. [PMID: 33746744 PMCID: PMC7970560 DOI: 10.3389/fphar.2020.611794] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2020] [Accepted: 12/04/2020] [Indexed: 12/12/2022] Open
Abstract
Acute respiratory distress syndrome (ARDS) is a complex cascade that develops from acute lung injury (ALI). Ginseng can be used to treat ALI/ARDS. Studies have shown that some of ingredients in ginseng had anti-inflammation, antioxidative, and immune regulation effects and can protect alveolar epithelial cells in mice. However, the potential targets, biological processes, and pathways related to ginseng against ALI/ARDS have not been investigated systematically. We employed network pharmacology, molecular docking, and animal experiments to explore the therapeutic effects and underlying mechanism of action of ginseng against ALI/ARDS. We identified 25 compounds using ultrahigh-performance liquid chromatography Q-Orbitrap mass spectrometry and their 410 putative targets through database analyses. Sixty-nine of them were considered to be key targets of ginseng against ALI/ARDS according to overlapping with ALI/ARDS-related targets and further screening in a protein–protein interaction (PPI) network. The phosphatidylinositol 3-kinase-protein kinase B (PI3K-AkT) and mitogen-activated protein kinase (MAPK) pathways were recognized to have critical roles for ginseng in ALI/ARDS treatment. Signal transducer and activator of transcription (STAT) 3, vascular endothelial growth factor A (VEGFA), fibroblast growth factor (FGF) 2, phosphatidylinositol-4,5-bisphosphate 3-kinase catalytic subunit alpha (PIK3CA), MAPK1, and interleukin (IL) 2 were the top six nodes identified by analyses of a compound–target-pathway network. Molecular docking showed that most of the ingredients in ginseng could combine well with the six nodes. Ginseng could reduce the pathologic damage, neutrophil aggregation, proinflammatory factors, and pulmonary edema in vivo and inhibit the PI3K-Akt signaling pathway and MAPK signaling pathway through downregulating expressions of STAT3, VEGFA, FGF2, PIK3CA, MAPK1, and IL2. Our study provides a theoretical basis for ginseng treatment of ALI/ARDS.
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Affiliation(s)
- Qi Ding
- School of Life Science, Beijing University of Chinese Medicine, Beijing, China.,Shenzhen Research Institute, Beijing University of Chinese Medicine, Shenzhen, China
| | - Wenxiang Zhu
- School of Life Science, Beijing University of Chinese Medicine, Beijing, China
| | - Yirui Diao
- School of Life Science, Beijing University of Chinese Medicine, Beijing, China
| | - Gonghao Xu
- School of Life Science, Beijing University of Chinese Medicine, Beijing, China
| | - Lu Wang
- School of Life Science, Beijing University of Chinese Medicine, Beijing, China
| | - Sihao Qu
- School of Life Science, Beijing University of Chinese Medicine, Beijing, China
| | - Yuanyuan Shi
- School of Life Science, Beijing University of Chinese Medicine, Beijing, China.,Shenzhen Research Institute, Beijing University of Chinese Medicine, Shenzhen, China
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Pal M, Bao W, Wang R, Liu Y, An X, Mitchell WB, Lobo CA, Minniti C, Shi PA, Manwani D, Yazdanbakhsh K, Zhong H. Hemolysis inhibits humoral B-cell responses and modulates alloimmunization risk in patients with sickle cell disease. Blood 2021; 137:269-280. [PMID: 33152749 PMCID: PMC7820872 DOI: 10.1182/blood.2020008511] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2020] [Accepted: 10/12/2020] [Indexed: 12/24/2022] Open
Abstract
Red blood cell alloimmunization remains a barrier for safe and effective transfusions in sickle cell disease (SCD), but the associated risk factors remain largely unknown. Intravascular hemolysis, a hallmark of SCD, results in the release of heme with potent immunomodulatory activity, although its effect on SCD humoral response, specifically alloimmunization, remains unclear. Here, we found that cell-free heme suppresses human B-cell plasmablast and plasma cell differentiation by inhibiting the DOCK8/STAT3 signaling pathway, which is critical for B-cell activation, as well as by upregulating heme oxygenase 1 (HO-1) through its enzymatic byproducts, carbon monoxide and biliverdin. Whereas nonalloimmunized SCD B cells were inhibited by exogenous heme, B cells from the alloimmunized group were nonresponsive to heme inhibition and readily differentiated into plasma cells. Consistent with a differential B-cell response to hemolysis, we found elevated B-cell basal levels of DOCK8 and higher HO-1-mediated inhibition of activated B cells in nonalloimmunized compared with alloimmunized SCD patients. To overcome the alloimmunized B-cell heme insensitivity, we screened several heme-binding molecules and identified quinine as a potent inhibitor of B-cell activity, reversing the resistance to heme suppression in alloimmunized patients. B-cell inhibition by quinine occurred only in the presence of heme and through HO-1 induction. Altogether, these data suggest that hemolysis can dampen the humoral B-cell response and that B-cell heme responsiveness maybe a determinant of alloimmunization risk in SCD. By restoring B-cell heme sensitivity, quinine may have therapeutic potential to prevent and inhibit alloimmunization in SCD patients.
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Affiliation(s)
| | | | | | | | - Xiuli An
- Laboratory of Membrane Biology, New York Blood Center, New York, NY
| | - William B Mitchell
- Department of Pediatrics, Montefiore Health Center, Albert Einstein College of Medicine, Children's Hospital at Montefiore, Bronx, NY
| | - Cheryl A Lobo
- Laboratory of Blood-Borne Parasites, New York Blood Center, New York, NY
| | - Caterina Minniti
- Department of Medicine, Division of Hematology, Montefiore Health Center, Albert Einstein College of Medicine, Bronx, NY; and
| | - Patricia A Shi
- Sickle Cell Clinical Research Program, New York Blood Center, New York, NY
| | - Deepa Manwani
- Department of Pediatrics, Montefiore Health Center, Albert Einstein College of Medicine, Children's Hospital at Montefiore, Bronx, NY
| | | | - Hui Zhong
- Laboratory of Immune Regulation, and
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19
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He YQ, Zhou CC, Yu LY, Wang L, Deng JL, Tao YL, Zhang F, Chen WS. Natural product derived phytochemicals in managing acute lung injury by multiple mechanisms. Pharmacol Res 2021; 163:105224. [PMID: 33007416 PMCID: PMC7522693 DOI: 10.1016/j.phrs.2020.105224] [Citation(s) in RCA: 171] [Impact Index Per Article: 57.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/24/2020] [Revised: 09/15/2020] [Accepted: 09/22/2020] [Indexed: 12/14/2022]
Abstract
Acute lung injury (ALI) and its more severe form, acute respiratory distress syndrome (ARDS) as common life-threatening lung diseases with high mortality rates are mostly associated with acute and severe inflammation in lungs. With increasing in-depth studies of ALI/ARDS, significant breakthroughs have been made, however, there are still no effective pharmacological therapies for treatment of ALI/ARDS. Especially, the novel coronavirus pneumonia (COVID-19) is ravaging the globe, and causes severe respiratory distress syndrome. Therefore, developing new drugs for therapy of ALI/ARDS is in great demand, which might also be helpful for treatment of COVID-19. Natural compounds have always inspired drug development, and numerous natural products have shown potential therapeutic effects on ALI/ARDS. Therefore, this review focuses on the potential therapeutic effects of natural compounds on ALI and the underlying mechanisms. Overall, the review discusses 159 compounds and summarizes more than 400 references to present the protective effects of natural compounds against ALI and the underlying mechanism.
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Affiliation(s)
- Yu-Qiong He
- Institute of Chinese Materia Madica, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China
| | - Can-Can Zhou
- Department of Pharmacy, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai 200072, China
| | - Lu-Yao Yu
- Institute of Chinese Materia Madica, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China
| | - Liang Wang
- Institute of Chinese Materia Madica, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China
| | - Jiu-Ling Deng
- Institute of Chinese Materia Madica, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China
| | - Yu-Long Tao
- Department of Pharmacy, Changzheng Hospital, Second Military Medical University, Shanghai 200003, China
| | - Feng Zhang
- Institute of Chinese Materia Madica, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China; Department of Pharmacy, Changzheng Hospital, Second Military Medical University, Shanghai 200003, China.
| | - Wan-Sheng Chen
- Institute of Chinese Materia Madica, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China; Department of Pharmacy, Changzheng Hospital, Second Military Medical University, Shanghai 200003, China.
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20
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Chen C, Zhang Z, Tan F, Meng F, Lai L, Chi X, Zhu Q. Stabilizing mast cells improves acute lung injury after orthotopic liver transplantation via promotion of apoptosis in polymorphonuclear neutrophils. Am J Physiol Lung Cell Mol Physiol 2020; 320:L266-L275. [PMID: 33174448 DOI: 10.1152/ajplung.00046.2020] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
Postoperative pulmonary complications including acute lung injury (ALI) and acute respiratory distress syndrome have contributed to mortality and morbidity of orthotopic liver transplantation (OLT) with unclear mechanisms. Mast cells (MCs) and polymorphonuclear neutrophils (PMNs) are the main inflammatory cells and participants in the process of ALI. The present study was designed to investigate the role of MCs and PMNs and their potential relation to ALI following OLT. Rat orthotopic autologous liver transplantation (OALT) model was designed to determine lung injury at different time points after liver reperfusion. We also evaluated the function of MCs and the effect of tumor necrosis factor-α (TNF-α) and tryptase on ALI and PMN apoptosis in rats subjected to OALT. Histological scores and inflammatory factor levels as well as PMN apoptosis were measured. Rats suffered from ALI after OALT, which was demonstrated by a collapse of the pulmonary architecture, pulmonary edema, and infiltration of inflammatory cells in alveolar and interstitial spaces, as well as increased levels of proinflammatory cytokines. ALI maximized at 8 h after OALT. However, PMN apoptosis lagged behind the pulmonary injury and maximized at 16 h after OALT, when the acute inflammation resolution initiated. MC stabilization, and tryptase and TNF-α inhibitors could significantly decrease the lung pathophysiologic scores accompanied by an increase in PMN apoptosis. ALI after OALT was associated with MC activation and PMN apoptosis. ALI progression might be affected by delayed PMN apoptosis, which was related to MC activation. Induction of PMN apoptosis might alleviate ALI after OALT.
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Affiliation(s)
- Chaojin Chen
- Department of Anesthesiology, The Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou City, People's Republic of China
| | - Zheng Zhang
- Department of Anesthesiology, The Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou City, People's Republic of China
| | - Fang Tan
- Department of Anesthesiology, The Seventh Affiliated Hospital of Sun Yat-Sen University, Shenzhen City, People's Republic of China
| | - Fanbing Meng
- Department of Anesthesiology, The Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou City, People's Republic of China
| | - Lifei Lai
- Department of Anesthesiology, The Seventh Affiliated Hospital of Sun Yat-Sen University, Shenzhen City, People's Republic of China
| | - Xinjin Chi
- Department of Anesthesiology, The Seventh Affiliated Hospital of Sun Yat-Sen University, Shenzhen City, People's Republic of China
| | - Qianqian Zhu
- Department of Anesthesiology, The Seventh Affiliated Hospital of Sun Yat-Sen University, Shenzhen City, People's Republic of China
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Zhang Z, Yao W, Yuan D, Huang F, Liu Y, Luo G, Hei Z. Effects of Connexin 32-Mediated Lung Inflammation Resolution During Liver Ischemia Reperfusion. Dig Dis Sci 2020; 65:2914-2924. [PMID: 31900713 DOI: 10.1007/s10620-019-06020-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/30/2019] [Accepted: 12/17/2019] [Indexed: 02/07/2023]
Abstract
BACKGROUND Hepatic ischemia reperfusion (HIR) leads to a lung inflammatory response and subsequent pulmonary barrier dysfunction. The gap junction communication protein connexin 32 (Cx32), which is widely expressed in the lungs, participates in intercellular signaling. This study determined whether the communication protein Cx32 could affect pulmonary inflammation caused by HIR. METHODS Mice were randomly allocated into four groups (n = 8/group): (i) Cx32+/+ sham group; (ii) Cx32+/+ HIR model group; (iii) Cx32-/- sham group; and (iv) Cx32-/- HIR model group. Twenty-four hours after surgery, lung tissues were collected for bright field microscopy, western blot (Cx32, JAK2, p-JAK2, STAT3, p-STAT3), and immunofluorescence (ZO-1, 8-OHDG) analyses. The collected bronchoalveolar fluid was tested for levels of interleukin-6 (IL-6), matrix metalloproteinase 12 (MMP-12), and antitrypsin (α1-AT). Lung mmu-miR-26a/b expression was detected using a PCR assay. RESULTS Increased expression of Cx32 mRNA and protein was noted in the lungs after HIR. Cx32 deletion significantly aggravated pulmonary function from acute lung injury induced by HIR. In addition, Cx32 deletion decreased the protein level of ZO-1 (pulmonary function) and increased the level of the oxidative stress marker 8-OHDG in the lungs. Moreover, in the Cx32-/- HIR model group, the levels of IL-6 and MMP-12 in bronchoalveolar lavage fluid were significantly increased leading to activation of the JAK2/STAT3 pathway, and decreased α1-AT levels. Furthermore, we found mmu-miR-26a/b was significantly downregulated in the Cx32-/- HIR model group. CONCLUSION HIR leads to acute lung inflammatory injury. Cx32 deletion aggravates hepatic-derived lung inflammation, partly through blocking the transferring of mmu-miR-26a/b and leading to IL-6-related JAK2/STAT3 pathway activation.
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Affiliation(s)
- Zheng Zhang
- Department of Anesthesiology, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, 510630, China
| | - Weifeng Yao
- Department of Anesthesiology, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, 510630, China
| | - Dongdong Yuan
- Department of Anesthesiology, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, 510630, China
| | - Fei Huang
- Department of Anesthesiology, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, 510630, China
| | - Yue Liu
- Department of Anesthesiology, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, 510630, China
| | - Gangjian Luo
- Department of Anesthesiology, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, 510630, China
| | - Ziqing Hei
- Department of Anesthesiology, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, 510630, China.
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22
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Xu S, Qin D, Yang H, He C, Liu W, Tian N, Wei Y, He X, Hua J, Peng S. SerpinB1 promotes the proliferation of porcine pancreatic stem cells through the STAT3 signaling pathway. J Steroid Biochem Mol Biol 2020; 198:105537. [PMID: 31785377 DOI: 10.1016/j.jsbmb.2019.105537] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/20/2019] [Revised: 10/25/2019] [Accepted: 11/11/2019] [Indexed: 01/25/2023]
Abstract
Porcine pancreatic stem cells (pPSCs) can be induced to insulin-secreting cells and therefore considered the most promising seeding cells for curing human diabetes in future. However, insufficient pPSCs number is one of the bottleneck problems before its clinical application. SerpinB1 is a serine protease inhibitor in neutrophils and can directly promote the proliferation of β cells. Whether SerpinB1 is involved in pPSC proliferation and differentiation remains unknown. The effects of SerpinB1 on pPSCs proliferation were measured by Cell Counting Kit-8, 5-ethynyl-2'-deoxyuridine, qRT-PCR, western blot, and flow cytometry assays. We found that pPSCs did not efficiently reach the S phase when SerpinB1 expression was knocked down with short hairpin RNA (sh-SerpinB1), the expression of Cyclin D1, CDK-2, and PCNA also decreased. Meanwhile, cell viability and proliferation ability were both declined. Further analyses showed that the expression level of phosphorylated STAT3/STAT3was downregulated, along with an upregulation of p53 and p21. We used a two-step induction method to induce pPSCs to insulin-secreting cells and found that SerpinB1 expression in insulin-secreting cells was higher than in pPSCs. Meanwhile, the protein expression level of phosphorylated STAT3/STAT3 was increased while p53 and p21 was decreased in induced insulin-secreting cells in comparison with control cells. The insulin-secreting cells derived from the sh-SerpinB1 cells secreted less insulin and showed poor sensitivity to high glucose than control group. However, the insulin-secreting cells derived from the ov-SerpinB1 cells has a quite contrary tendency. In conclusion, this study demonstrates that SerpinB1 promotes the proliferation of pPSCs through the STAT3 signaling pathway, and SerpinB1 is a key factor for maintaining the viability of pPSCs during the transition to insulin-secreting cells.
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Affiliation(s)
- Shuanshuan Xu
- College of Veterinary Medicine, Shaanxi Centre of Stem Cells Engineering & Technology, Northwest A&F University, Yangling, Shaanxi, 712100, PR China
| | - Dezhe Qin
- College of Veterinary Medicine, Shaanxi Centre of Stem Cells Engineering & Technology, Northwest A&F University, Yangling, Shaanxi, 712100, PR China
| | - Hong Yang
- College of Veterinary Medicine, Shaanxi Centre of Stem Cells Engineering & Technology, Northwest A&F University, Yangling, Shaanxi, 712100, PR China
| | - Chen He
- College of Veterinary Medicine, Shaanxi Centre of Stem Cells Engineering & Technology, Northwest A&F University, Yangling, Shaanxi, 712100, PR China
| | - Wenqing Liu
- College of Veterinary Medicine, Shaanxi Centre of Stem Cells Engineering & Technology, Northwest A&F University, Yangling, Shaanxi, 712100, PR China
| | - Na Tian
- College of Veterinary Medicine, Shaanxi Centre of Stem Cells Engineering & Technology, Northwest A&F University, Yangling, Shaanxi, 712100, PR China
| | - Yudong Wei
- College of Veterinary Medicine, Shaanxi Centre of Stem Cells Engineering & Technology, Northwest A&F University, Yangling, Shaanxi, 712100, PR China
| | - Xin He
- College of Veterinary Medicine, Shaanxi Centre of Stem Cells Engineering & Technology, Northwest A&F University, Yangling, Shaanxi, 712100, PR China
| | - Jinlian Hua
- College of Veterinary Medicine, Shaanxi Centre of Stem Cells Engineering & Technology, Northwest A&F University, Yangling, Shaanxi, 712100, PR China
| | - Sha Peng
- College of Veterinary Medicine, Shaanxi Centre of Stem Cells Engineering & Technology, Northwest A&F University, Yangling, Shaanxi, 712100, PR China.
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23
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Pemberton PA. Expression and purification of recombinant human serpin B1 yields novel molecules with altered protease inhibitory activities: Functional implications. Protein Expr Purif 2020; 170:105595. [PMID: 32044416 DOI: 10.1016/j.pep.2020.105595] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2019] [Revised: 01/31/2020] [Accepted: 02/04/2020] [Indexed: 11/19/2022]
Abstract
Serpin B1 regulates the innate immune system by inhibiting serine and cysteine proteases that control programmed cell death and proliferation pathways. To provide recombinant human proteins for in vitro and in vivo studies we expressed and purified wild-type human serpin B1 and a C344A variant in the yeast S. cerevisiae. Both proteins expressed well and inhibited elastase and chymotrypsin. However, purification of wild-type serpin B1 in the absence of a reducing agent resulted in the specific loss of elastase - but not chymotrypsin - inhibition, concomitant with the formation of two higher molecular weight forms of the protein - a modified monomer and a dimer created via an intermolecular disulfide bond formed between C344 in respective serpin B1 monomers. In contrast to fully reduced serpin B1, both modified forms were good elastase substrates and catalytically cleaved at multiple adjacent sites within the reactive site loop. In contrast, purification of the C344A variant in the absence of a reducing agent yielded only one form of the protein which retained elastase and chymotrypsin inhibitory properties when purified. Furthermore, the elastase inhibitory activity of wild-type serpin B1, but not the C344A variant, was sensitive to oxidation. Thus, wild-type human serpin B1 should be formulated with a pharmaceutically acceptable reducing agent to protect C344 against post-translational oxidative modifications. Alternatively, the C344A variant of this protein may prove to be a suitable drug development candidate. These findings also suggest that inactivation of serpin B1 by oxidation may have a physiological role to play during inflammation.
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Affiliation(s)
- Philip A Pemberton
- SerPlus Technology LLC, 111 Industrial Way, Suite 9, Belmont, CA, 94002, USA.
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Yao W, Guo A, Han X, Wu S, Chen C, Luo C, Li H, Li S, Hei Z. Aerosol inhalation of a hydrogen-rich solution restored septic renal function. Aging (Albany NY) 2019; 11:12097-12113. [PMID: 31841441 PMCID: PMC6949055 DOI: 10.18632/aging.102542] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2019] [Accepted: 11/19/2019] [Indexed: 12/29/2022]
Abstract
Sepsis-related acute kidney injury (AKI) is known to be caused by inflammation. We explored the renal protective effects of aerosol inhalation of a hydrogen-rich solution (HRS; hydrogen gas dissolved to saturation in saline) in a mouse model of septic AKI. Septic AKI was induced through 18 hours of cecal ligation and puncture. AKI occurred during the early stage of sepsis, as evidenced by increased blood urea nitrogen and serum creatinine levels, pathological changes, renal fibrosis and renal tubular epithelial cell apoptosis, accompanied by macrophage infiltration and M1 macrophage-associated pro-inflammatory cytokine (Il-6 and Tnf-α) generation in renal tissues. Aerosol inhalation of the HRS increased anti-inflammatory cytokine (Il-4 and Il-13) mRNA levels in renal tissues and promoted macrophage polarization to the M2 type, which generated additional anti-inflammatory cytokines (Il-10 and Tgf-β). Ultimately, aerosol inhalation of HRS protected the kidneys and increased survival among septic mice. HRS was confirmed to promote M2 macrophage polarization in lipopolysaccharide-stimulated RAW 264.7 cells. The TGF-β1 receptor inhibitor SB-431542 partly reversed the effects of HRS on renal function, fibrosis, tubular epithelial cell apoptosis and senescence in mice. Thus, HRS aerosol inhalation appears highly useful for renal protection and inflammation reduction in septic AKI.
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Affiliation(s)
- Weifeng Yao
- Department of Anesthesiology, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou 510630, China
| | - Anshun Guo
- Department of Anesthesiology, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou 510630, China.,Department of Anesthesiology, The Fifth Affiliated Hospital of Sun Yat-sen University, Zhuhai 519000, China
| | - Xue Han
- Department of Anesthesiology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou 510000, China
| | - Shan Wu
- Department of Anesthesiology, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou 510630, China
| | - Chaojin Chen
- Department of Anesthesiology, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou 510630, China
| | - Chenfang Luo
- Department of Anesthesiology, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou 510630, China
| | - Haobo Li
- Department of Anesthesiology, Affiliated Hospital of Guangdong Medical University, Zhanjiang 524023, China
| | - Shangrong Li
- Department of Anesthesiology, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou 510630, China
| | - Ziqing Hei
- Department of Anesthesiology, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou 510630, China
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Neutrophil Elastase Inhibitors Suppress Oxidative Stress in Lung during Liver Transplantation. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2019; 2019:7323986. [PMID: 31871555 PMCID: PMC6906808 DOI: 10.1155/2019/7323986] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/24/2019] [Revised: 08/18/2019] [Accepted: 08/27/2019] [Indexed: 01/24/2023]
Abstract
Background Neutrophil infiltration plays a critical role in the pathogenesis of acute lung injury following liver transplantation (LT). Neutrophil elastase is released from neutrophils during pulmonary polymorphonuclear neutrophil activation and sequestration. The aim of the study was to investigate whether the inhibition of neutrophil elastase could lead to the restoration of pulmonary function following LT. Methods In in vivo experiments, lung tissue and bronchoalveolar lavage fluid (BALF) were collected at 2, 4, 8, and 24 h after rats were subjected to orthotopic autologous LT (OALT), and neutrophil infiltration was detected. Next, neutrophil elastase inhibitors, sivelestat sodium hydrate (exogenous) and serpin family B member 1 (SERPINB1) (endogenous), were administered to rats before OALT, and neutrophil infiltration, pulmonary oxidative stress, and barrier function were measured at 8 h after OALT. Results Obvious neutrophil infiltration occurred from 2 h and peaked at 8 h in the lungs of rats after they were subjected to OALT, as evidenced by an increase in naphthol-positive cells, BALF neutrophil elastase activity, and lung myeloperoxidase activity. Treatment with neutrophil elastase inhibitors, either sivelestat sodium hydrate or SERPINB1, effectively reduced lung naphthol-positive cells and BALF inflammatory cell content, increased expression of lung HO-1 and tight junction proteins ZO-1 and occludin, and increased the activity of superoxide dismutase. Conclusion Neutrophil elastase inhibitors, sivelestat sodium hydrate and SERPINB1, both reduced lung neutrophil infiltration and pulmonary oxidative stress and finally restored pulmonary barrier function.
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Oxidative Stress and Inflammation Interaction in Ischemia Reperfusion Injury: Role of Programmed Cell Death. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2019; 2019:6780816. [PMID: 31089413 PMCID: PMC6476075 DOI: 10.1155/2019/6780816] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 01/17/2019] [Accepted: 01/17/2019] [Indexed: 12/21/2022]
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Intravenous Anesthetic Protects Hepatocyte from Reactive Oxygen Species-Induced Cellular Apoptosis during Liver Transplantation In Vivo. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2018; 2018:4780615. [PMID: 30510620 PMCID: PMC6230392 DOI: 10.1155/2018/4780615] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/22/2018] [Accepted: 08/28/2018] [Indexed: 12/31/2022]
Abstract
Background Liver transplantation leads to liver ischemia/reperfusion (I/R) injury, resulting in early graft dysfunction and failure. Exacerbations of oxidative stress and inflammatory response are key processes in the development of liver I/R injury. Intravenous anesthetic propofol potent effects on free radical scavenging and protects livers against I/R injury. However, the role and mechanism of propofol-mediated hepatic protection in liver transplantation is poorly understood. The aim of this study was to evaluate the role of propofol postconditioning in the liver I/R injury after liver transplantation. Methods Forty-eight rats were randomly divided into six groups: rats receiving either sham operation or orthotopic autologous liver transplantation (OALT) in the absence or presence of propofol (high dose and low dose) postconditioning or intralipid control or VAS2870 (Nox2 special inhibitor). Eight hours after OALT or sham operation, parameters of organ injury, oxidative stress, inflammation, and NADPH-associated proteins were assessed. Results After OALT, severe liver pathological injury was observed that was associated with increases of serum AST and ALT, which were attenuated by propofol postconditioning. In addition, especially high dose of propofol postconditioning reduced TNF-α, IL-1β, IL-6, TLR4, and NF-κB inflammatory pathway, accompanied with decrease of neutrophil elastase activity, MPO activity, 8-isoprotane, p47phox and gp91phox protein expressions, and increase of SOD activity. Inhibition of Nox2 by VAS2870 conferred similar protective effects in liver transplantation. Conclusion Liver transplantation leads to severe inflammation and oxidative stress with NADPH oxidase activation. Propofol postconditioning reduces liver I/R injury after liver transplantation partly via inhibiting NADPH oxidase Nox2 and the subsequent inflammation and oxidative stress.
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Mechanism and Therapies of Oxidative Stress-Mediated Cell Death in Ischemia Reperfusion Injury. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2018; 2018:2910643. [PMID: 30034574 PMCID: PMC6035842 DOI: 10.1155/2018/2910643] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 10/15/2017] [Accepted: 10/16/2017] [Indexed: 01/06/2023]
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Heme Oxygenase-1 Reduces Sepsis-Induced Endoplasmic Reticulum Stress and Acute Lung Injury. Mediators Inflamm 2018; 2018:9413876. [PMID: 30013453 PMCID: PMC6022325 DOI: 10.1155/2018/9413876] [Citation(s) in RCA: 62] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2018] [Accepted: 04/04/2018] [Indexed: 12/29/2022] Open
Abstract
Background Sepsis leads to severe acute lung injury/acute respiratory distress syndrome (ALI/ARDS) that is associated with enhanced endoplasmic reticulum (ER) stress. Heme oxygenase-1 (HO-1), an ER-anchored protein, exerts antioxidant and protective functions under ALI. However, the role of HO-1 activation in the development of endoplasmic reticulum (ER) stress during sepsis remains unknown. Methods Cecal ligation and puncture (CLP) model was created to induce septic ALI. Lung tissue ER stress was measured 18 hours after CLP. The effects of HO-1 on ER stress during septic ALI were investigated in vivo using HO-1 agonist hemin and antagonist ZnPP. Results Compared with the sham group, ER stress in septic lung increased significantly 18 hours after CLP, which was significantly reduced by pretreatment with the ER inhibitor 4-phenylbutyrate (4-PBA). The lung injury score and the lung wet to dry (W/D) ratio in lungs were significantly reduced in septic rats after ER stress inhibition. Similarly, lung ER stress-related genes' (PERK, eIF2-α, ATF4, and CHOP) levels were attenuated after ER stress inhibition. Furthermore, HO-1 activation by hemin reduced p-PERK, p-eIF2-α, ATF4, and CHOP protein expression and oxidative stress and lung cell apoptosis. Additionally, HO-1 antagonist could aggregate the ER stress-related ALI. Conclusions ER stress was activated during CLP-induced ALI, which may represent a mechanism by which CLP induces ALI. HO-1 activation could inhibit CLP-induced lung ER stress and attenuate CLP-induced ALI.
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Qiu R, Yao W, Ji H, Yuan D, Gao X, Sha W, Wang F, Huang P, Hei Z. Dexmedetomidine restores septic renal function via promoting inflammation resolution in a rat sepsis model. Life Sci 2018; 204:1-8. [PMID: 29733849 DOI: 10.1016/j.lfs.2018.05.001] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2018] [Revised: 04/27/2018] [Accepted: 05/01/2018] [Indexed: 12/21/2022]
Abstract
BACKGROUND Acute kidney injury occurred after sepsis, resulting in high mortality. This research aims to elucidate the mechanistic effect of DEX on the renal inflammation resolution during sepsis in rats. METHODS The rats were randomly divided into a sham group and the other three cecal ligation and puncture (CLP) model groups, based on different treatments: placebo, DEX and 2-adrenergic receptor (AR) inhibitor atipamezole (AT) treatment (DEX + AT) groups. The survival of septic rats within 24 h was recorded. Tissue pathology, plasma IL-1β, IL-6, TNF-α, lipoxygenase-5 and lipoxin A4 were evaluated. Western blotting and immunostaining was used to determine expression of TLR4, IκB, IKK, NF-κB p65 and pp65 in kidney tissue. Then qPCR was used to analyze the mRNA expression of renal α2A-AR, α2B-AR and α2C-AR. RESULTS Rat mortality and kidney inflammation were significantly increased in septic rats. Specifically, IL-1β, IL-6 and TNF-α plasma levels, NF-κB activity, and TLR4 expression in rat kidney tissues were increased after CLP. In the DEX treatment group, mortality was reduced, histology changes were minor, and lipoxygenase-5, and lipoxin A4 expression were increased. The expression of IL-1β, IL-6 and TNF-α, NF-κB activity and TLR4 expression in rat kidney tissues were also decreased. These results indicated that DEX treatment alleviates acute kidney injury induced by CLP. However, the effects of DEX were apparently suppressed by atipamezole in the DEX + AT group. CONCLUSION The current study demonstrated the protective effect of DEX on CLP-induced kidney injury, which may be effective by attenuating NF-κB pathway activation with lipoxin A4.
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Affiliation(s)
- Rongzong Qiu
- Department of Anesthesiology, Huizhou First Hospital, Huizhou, Guangdong 516000, China; Department of Anesthesiology, Third Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong 510630, China
| | - Weifeng Yao
- Department of Anesthesiology, Third Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong 510630, China.
| | - Haocong Ji
- Department of Anesthesiology, Huizhou First Hospital, Huizhou, Guangdong 516000, China
| | - Dongdong Yuan
- Department of Anesthesiology, Third Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong 510630, China
| | - Xiaofeng Gao
- Department of Anesthesiology, Huizhou First Hospital, Huizhou, Guangdong 516000, China
| | - Weiping Sha
- Department of Anesthesiology, Huizhou First Hospital, Huizhou, Guangdong 516000, China
| | - Fei Wang
- Department of Anesthesiology, Huizhou First Hospital, Huizhou, Guangdong 516000, China
| | - Pinjie Huang
- Department of Anesthesiology, Huizhou First Hospital, Huizhou, Guangdong 516000, China
| | - Ziqing Hei
- Department of Anesthesiology, Third Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong 510630, China.
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Heme oxygnease-1 induction by methylene blue protects RAW264.7 cells from hydrogen peroxide-induced injury. Biochem Pharmacol 2018; 148:265-277. [PMID: 29309766 DOI: 10.1016/j.bcp.2018.01.015] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2017] [Accepted: 01/04/2018] [Indexed: 01/23/2023]
Abstract
Although methylene blue (MB) has showed strong antioxidant effect, its effect related with heme oxygenase-1 (HO-1) is still unclear. Thus, we investigated the effects of MB on HO-1 protein content and enzyme activity, and its protective effect against hydrogen peroxide (H2O2)-induced oxidative damage in RAW264.7 macrophage. The cell viability and the release of lactate dehydrogenase of RAW264.7 were determined. The mitochondrial functions were valuated through these indexes: content of adenosine triphosphate, superoxide dismutase, concentration of reactive oxygen species and mitochondrial membrane potential. Meanwhile, high content screening tested generation of ROS, MMP and intracellular concentration of calcium ion. qRT-PCR valuated macrophage phenotype markers expression. Lastly, flow cytometry and caspase-3 detection analyzed RAW264.7 apoptosis. Our data showed that (1) Both pretreatment and posttreatment of MB increased HO-1 protein content and enzyme activity; (2) MB rescued cells from H2O2-induced mitochondrial dysfunction; (3) High content screening revealed that MB alleviated the changes including generation of reactive oxygen species, mitochondrial membrane potential and intracellular concentration of calcium ion in H2O2 exposed RAW264.7; (4) MB attenuated H2O2-induced apoptosis; (5) MB pretreatment decreased the expression of M1 macrophage markers (Tnf and Nos2) while increasing the expression of M2 macrophage markers (Mrc1 and Il10); (6) The beneficial effect of MB was abolished by zinc protoporphyrin IX (HO-1 activity inhibitor) or HO-1 siRNA. In summary, MB protects RAW264.7 cells from H2O2-induced injury through up-regulation HO-1.
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