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JIANG S, ZHANG W, LU Y. Development and validation of novel inflammatory response-related gene signature for sepsis prognosis. J Zhejiang Univ Sci B 2022; 23:1028-1041. [PMID: 36518055 PMCID: PMC9758714 DOI: 10.1631/jzus.b2200285] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Due to the low specificity and sensitivity of biomarkers in sepsis diagnostics, the prognosis of sepsis patient outcomes still relies on the assessment of clinical symptoms. Inflammatory response is crucial to sepsis onset and progression; however, the significance of inflammatory response-related genes (IRRGs) in sepsis prognosis is uncertain. This study developed an IRRG-based signature for sepsis prognosis and immunological function. The Gene Expression Omnibus (GEO) database was retrieved for two sepsis microarray datasets, GSE64457 and GSE69528, followed by gene set enrichment analysis (GSEA) comparing sepsis and healthy samples. A predictive signature for IRRGs was created using least absolute shrinkage and selection operator (LASSO). To confirm the efficacy and reliability of the new prognostic signature, Cox regression, Kaplan-Meier (K-M) survival, and receiver operating characteristic (ROC) curve analyses were performed. Subsequently, we employed the GSE95233 dataset to independently validate the prognostic signature. A single-sample GSEA (ssGSEA) was conducted to quantify the immune cell enrichment score and immune-related pathway activity. We found that more gene sets were enriched in the inflammatory response in sepsis patient samples than in healthy patient samples, as determined by GSEA. The signature of nine IRRGs permitted the patients to be classified into two risk categories. Patients in the low-risk group showed significantly better 28-d survival than those in the high-risk group. ROC curve analysis corroborated the predictive capacity of the signature, with the area under the curve (AUC) for 28-d survival reaching 0.866. Meanwhile, the ssGSEA showed that the two risk groups had different immune states. The validation set and external dataset showed that the signature was clinically predictive. In conclusion, a signature consisting of nine IRRGs can be utilized to predict prognosis and influence the immunological status of sepsis patients. Thus, intervention based on these IRRGs may become a therapeutic option in the future.
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Affiliation(s)
- Shuai JIANG
- Department of Emergency Medicine, the First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou310003, China,Zhejiang Provincial Key Laboratory for Diagnosis and Treatment of Aging and Physic-Chemical Injury Diseases, Hangzhou310003, China
| | - Wenyuan ZHANG
- Department of Anesthesiology and Intensive Care, the First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou310003, China
| | - Yuanqiang LU
- Department of Emergency Medicine, the First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou310003, China,Zhejiang Provincial Key Laboratory for Diagnosis and Treatment of Aging and Physic-Chemical Injury Diseases, Hangzhou310003, China,Yuanqiang LU,
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2
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Hamdan D, Robinson LA. Role of the CX 3CL1-CX 3CR1 axis in renal disease. Am J Physiol Renal Physiol 2021; 321:F121-F134. [PMID: 34121453 DOI: 10.1152/ajprenal.00059.2021] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2021] [Accepted: 06/08/2021] [Indexed: 12/12/2022] Open
Abstract
Excessive infiltration of immune cells into the kidney is a key feature of acute and chronic kidney diseases. The family of chemokines comprises key drivers of this process. Fractalkine [chemokine (C-X3-C motif) ligand 1 (CX3CL1)] is one of two unique chemokines synthesized as a transmembrane protein that undergoes proteolytic cleavage to generate a soluble species. Through interacting with its cognate receptor, chemokine (C-X3-C motif) receptor 1 (CX3CR1), CX3CL1 was originally shown to act as a conventional chemoattractant in the soluble form and as an adhesion molecule in the transmembrane form. Since then, other functions of CX3CL1 beyond leukocyte recruitment have been described, including cell survival, immunosurveillance, and cell-mediated cytotoxicity. This review summarizes diverse roles of CX3CL1 in kidney disease and potential uses as a therapeutic target and novel biomarker. As the CX3CL1-CX3CR1 axis has been shown to contribute to both detrimental and protective effects in various kidney diseases, a thorough understanding of how the expression and function of CX3CL1 are regulated is needed to unlock its therapeutic potential.
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Affiliation(s)
- Diana Hamdan
- Program in Cell Biology, Hospital for Sick Children, Toronto, Ontario, Canada
- Institute of Medical Science, University of Toronto, Toronto, Ontario, Canada
| | - Lisa A Robinson
- Program in Cell Biology, Hospital for Sick Children, Toronto, Ontario, Canada
- Institute of Medical Science, University of Toronto, Toronto, Ontario, Canada
- Department of Paediatrics, University of Toronto, Toronto, Ontario, Canada
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3
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Li D, Weng Y, Wang G, Zhen G. Anti-Septic Potential of 7-α-Obacunyl Acetate Isolated from the Toona sinensis on Cecal Ligation/Puncture Mice via Suppression of JAK-STAT/NF-κB Signal Pathway. Infect Drug Resist 2021; 14:1813-1821. [PMID: 34017187 PMCID: PMC8131011 DOI: 10.2147/idr.s302853] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2021] [Accepted: 03/21/2021] [Indexed: 12/14/2022] Open
Abstract
Purpose Sepsis is a life-threatening clinical syndrome and characterized by an inflammatory and innate immune response to infections. The current study was aimed to evaluate the anti-sepsis effect of 7-α-Obacunyl acetate (7-OBA), the abundant constituent isolated from Toona sinensis (Meliaceae), in cecal ligation and puncture (CLP)-induced mice and to investigate the related molecular mechanisms. Methods The CLP operation was performed to establish the sepsis mice model, and the survival rate and temperature were measured after 7-OBA treatment (7.5, 15, and 30 mg/kg; i.p.). Inflammatory cytokines levels of TNF-α, IL-1β, IL-6, and IL-10 were detected by ELISA kits, and the kidney, liver, and heart function were measured using an automatic biochemistry analyzer. Effects of 7-OBA on NF-κB and JAK2-STAT3 signaling pathways were determined by Western blot analysis in a lipopolysaccharide (LPS) stimulated RAW264.7 cells model. Results 7-OBA treatment significantly increased the survival rate (p<0.05 and p<0.01) and normalized temperature (p<0.05 and p<0.01) of sepsis mice. The levels of pro-inflammatory cytokines like TNF-α, IL-1β, and IL-6 in serum were obviously decreased, whereas the anti-inflammatory cytokines of IL-10 were increased. CLP-induced increases of the main markers of kidney, liver, and heart function in mice (p<0.01) were also obviously reversed by 7-OBA. The anti-sepsis effect of 7-OBA might be associated with regulation of nuclear factor kappa-B (NF-κB) and Janus kinase 2 (JAK2)-signal transducer and activator of transcription 3 (STAT3) signal pathways. Conclusion Our investigation indicated that 7-OBA can be developed as an effective agent for treating/curing sepsis in the future.
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Affiliation(s)
- Duo Li
- Department of Critical Care Medicine, Beijing Luhe Hospital, Capital Medical University, Beijing, 101149, People's Republic of China
| | - Yibing Weng
- Department of Critical Care Medicine, Beijing Luhe Hospital, Capital Medical University, Beijing, 101149, People's Republic of China
| | - Guan Wang
- Department of Critical Care Medicine, Beijing Luhe Hospital, Capital Medical University, Beijing, 101149, People's Republic of China
| | - Genshen Zhen
- Department of Critical Care Medicine, Beijing Luhe Hospital, Capital Medical University, Beijing, 101149, People's Republic of China
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4
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Morris G, Puri BK, Maes M, Olive L, Berk M, Carvalho AF. The role of microglia in neuroprogressive disorders: mechanisms and possible neurotherapeutic effects of induced ketosis. Prog Neuropsychopharmacol Biol Psychiatry 2020; 99:109858. [PMID: 31923453 DOI: 10.1016/j.pnpbp.2020.109858] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/27/2019] [Revised: 01/03/2020] [Accepted: 01/05/2020] [Indexed: 12/23/2022]
Abstract
A comprehensive review of molecular mechanisms involved in the promotion and maintenance of distinct microglia phenotypes is provided. The acquisition and perpetuation of predominantly pro-inflammatory microglial phenotypes have been implicated in the pathophysiology of several neuroprogressive diseases and is associated with reduced ATP production via oxidative phosphorylation, increased ATP generation by glycolysis, elevated oxidative and nitrosative stress and other metabolic, inflammatory and hormonal insults. Microglia can also adopt a predominantly anti-inflammatory phenotypes with neuroprotective properties. Strategies that promote and maintain a predominantly anti-inflammatory phenotype may hold promise as novel therapeutic opportunities for neuroprogressive illness. Induced ketosis may promote a transition towards predominantly anti-inflammatory microglial states/phenotypes by several mechanisms, including inhibition of glycolysis and increased NAD+ production; engagement of microglial GPR109A receptors; histone deacetylase inhibition; and elevated n-3 polyunsaturated fatty acids levels. Since microglia activation can now be assessed in vivo, these data provide a clear rationale for the design of transdiagnostic randomized controlled trials of the ketogenic diet and other ketosis-inducing strategies for neuroprogressive diseases, which may also provide mechanistic insights through the assessment of "target engagement".
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Affiliation(s)
- Gerwyn Morris
- Deakin University, IMPACT Strategic Research Centre, Barwon Health, School of Medicine, Geelong, Victoria, Australia
| | | | - Michael Maes
- Deakin University, IMPACT Strategic Research Centre, Barwon Health, School of Medicine, Geelong, Victoria, Australia
| | - Lisa Olive
- Deakin University, IMPACT Strategic Research Centre, Barwon Health, School of Medicine, Geelong, Victoria, Australia
| | - Michael Berk
- Deakin University, IMPACT Strategic Research Centre, Barwon Health, School of Medicine, Geelong, Victoria, Australia; Deakin University, CMMR Strategic Research Centre, School of Medicine, Geelong, Victoria, Australia; Orygen, The National Centre of Excellence in Youth Mental Health, The Department of Psychiatry and the Florey Institute for Neuroscience and Mental Health, University of Melbourne, Parkville, Victoria, Australia
| | - Andre F Carvalho
- Deakin University, IMPACT Strategic Research Centre, Barwon Health, School of Medicine, Geelong, Victoria, Australia; Department of Psychiatry, University of Toronto, Toronto, ON, Canada; Centre for Addiction and Mental Health (CAMH), Toronto, ON, Canada.
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5
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Xia S, Lin H, Liu H, Lu Z, Wang H, Fan S, Li N. Honokiol Attenuates Sepsis-Associated Acute Kidney Injury via the Inhibition of Oxidative Stress and Inflammation. Inflammation 2019; 42:826-834. [PMID: 30680694 DOI: 10.1007/s10753-018-0937-x] [Citation(s) in RCA: 39] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
Acute kidney injury (AKI) is one of the most common complications of sepsis, which largely contributes to the high mortality rate of sepsis. Honokiol, a natural polyphenol from the traditional Chinese herb Magnolia officinalis, is known to possess anti-inflammatory and antioxidant activity. Here, the underlying mechanism of honokiol-induced amelioration of sepsis-associated AKI was analyzed. The expression patterns of oxidative stress moleculars and TLRs-mediated inflammation pathway were examined to identify the response of NRK-52E cells incubated with septic rats' serum to honokiol. The levels of iNOS, NO, and myeloperoxidase in NRK-52E cells were increased during sepsis, which could be reversed by honokiol. The production of GSH and SOD as in vivo antioxidant was increased after honokiol treatment. The administration of honokiol significantly inhibited TLR2/4/MyD88 signaling pathway in AKI-induced NRK-52E cells. Furthermore, ZnPPIX, the HO-1 inhibitor, weakened honokiol-mediated morphological amelioration, and the reduced level of TNF-α, IL-1β, and IL-6 in kidneys of rats subjected to CLP. Finally, Honokiol was shown to connect with the Nrf2-Keap1 dimensionally. These findings suggest that honokiol plays its protective role on sepsis-associated AKI against oxidative stress and inflammatory signals.
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Affiliation(s)
- Shilin Xia
- Clinical Laboratory of Integrative Medicine, the First Affiliated Hospital of Dalian Medical University, No.222 Zhongshan Road, Dalian, 116011, Liaoning, China
| | - Hongli Lin
- Department of Nephrology, The First Affiliated Hospital of Dalian Medical University, No.222 Zhongshan Road, Dalian, 116011, Liaoning, China
| | - Han Liu
- Department of Oral Pathology, Dalian Medical University, No.9 West Section Lvshun South Road, Dalian, 116044, Liaoning, China
| | - Zhidan Lu
- Intensive Care Unit, the First Affiliated Hospital of Dalian Medical University, No.222 Zhongshan Road, Dalian, 116011, Liaoning, China
| | - Hui Wang
- Intensive Care Unit, the First Affiliated Hospital of Dalian Medical University, No.222 Zhongshan Road, Dalian, 116011, Liaoning, China
| | - Songtao Fan
- Department of Ophthalmology, the First Affiliated Hospital of Dalian Medical University, No.222 Zhongshan Road, Dalian, 116011, Liaoning, China
| | - Nan Li
- Intensive Care Unit, the First Affiliated Hospital of Dalian Medical University, No.222 Zhongshan Road, Dalian, 116011, Liaoning, China.
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6
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Galán-Ganga M, García-Yagüe ÁJ, Lastres-Becker I. Role of MSK1 in the Induction of NF-κB by the Chemokine CX3CL1 in Microglial Cells. Cell Mol Neurobiol 2019; 39:331-340. [DOI: 10.1007/s10571-019-00664-w] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2018] [Accepted: 02/18/2019] [Indexed: 12/25/2022]
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7
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Jang J, Yoon Y, Oh DJ. A calpain inhibitor protects against fractalkine production in lipopolysaccharide-treated endothelial cells. Kidney Res Clin Pract 2017; 36:224-231. [PMID: 28904873 PMCID: PMC5592889 DOI: 10.23876/j.krcp.2017.36.3.224] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2017] [Revised: 04/20/2017] [Accepted: 05/10/2017] [Indexed: 11/06/2022] Open
Abstract
Background Fractalkine (CX3CL1) is a chemokine with a unique CX3C motif and is produced by endothelial cells stimulated with lipopolysaccharide (LPS), tumor necrosis factor (TNF)-α, interleukin (IL)-1, and interferon-γ. There have been several reports that the caspase/calpain system is activated in endotoxemia, which leads to cellular apoptosis and acute inflammatory processes. We aimed to determine the role of the caspase/calpain system in cell viability and regulation of fractalkine production in LPS-treated endothelial cells. Methods Human umbilical vein endothelial cells (HUVECs) were stimulated with 0.01–100 μg/mL of LPS to determine cell viability. The changes of CX3CL1 expression were compared in control, LPS (1 μg/mL)-, IL-1α (1 μg/mL)-, and IL-1β (1 μg/mL)-treated HUVECs. Cell viability and CX3CL1 production were compared with 50 μM of inhibitors of caspase-1, caspase-3, caspase-9, and calpain in LPS-treated HUVECs. Results Cell viability was significantly decreased from 1 to 100 μg/mL of LPS. Cell viability was significantly restored with inhibitors of caspase-1, caspase-3, caspase-9, and calpain in LPS-treated HUVECs. The expression of CX3CL1 was highest in IL-1β-treated HUVECs. CX3CL1 production was highly inhibited with a calpain inhibitor and significantly decreased with the individual inhibitors of caspase-1, caspase-3, and caspase-9. Conclusion The caspase/calpain system is an important modulator of cell viability and CX3CL1 production in LPS-treated endothelial cells.
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Affiliation(s)
- Jaewoong Jang
- Department of Microbiology, Chung-Ang University College of Medicine, Seoul, Korea
| | - Yoosik Yoon
- Department of Microbiology, Chung-Ang University College of Medicine, Seoul, Korea
| | - Dong-Jin Oh
- Department of Internal Medicine, Myongji Hospital, Seonam University College of Medicine, Goyang, Korea
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8
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Lipopolysaccharide-Binding Protein Downregulates Fractalkine through Activation of p38 MAPK and NF- κB. Mediators Inflamm 2017. [PMID: 28634422 PMCID: PMC5467387 DOI: 10.1155/2017/9734837] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
Background LBP and fractalkine are known to be involved in the pathogenesis of ARDS. This study investigated the relationship between LBP and fractalkine in LPS-induced A549 cells and rat lung tissue in an ARDS rat model. Methods A549 cells were transfected with LBP or LBP shRNA plasmid DNA or pretreated with SB203580 or SC-514 following LPS treatment. An ARDS rat model was established using LPS with or without LBPK95A, SB203580, or SC-514 treatment. RT-PCR, western blotting, ELISA, immunofluorescence, coimmunoprecipitation, and immunohistochemical staining were used to study the expression of fractalkine and LBP and p38 MAPK and p65 NF-κB activities. Results LPS increased LBP and reduced fractalkine. LBP overexpression further decreased LPS-induced downregulation of fractalkine and p38 MAPK and p65 NF-κB activation; LBP gene silencing, SB203580, and SC-514 suppressed LPS-induced downregulation of fractalkine and p38 MAPK and p65 NF-κB activation in A549 cells. LBP and fractalkine in lung tissue were increased and decreased, respectively, following LPS injection. LBPK95A, SB203580, and SC-514 ameliorated LPS-induced rat lung injury and suppressed LPS-induced downregulation of fractalkine by decreasing phospho-p38 MAPK and p65 NF-κB. Conclusions The results indicate that LBP downregulates fractalkine expression in LPS-induced A549 cells and in an ARDS rat model through activation of p38 MAPK and NF-κB.
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9
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Zhuang Q, Cheng K, Ming Y. CX3CL1/CX3CR1 Axis, as the Therapeutic Potential in Renal Diseases: Friend or Foe? Curr Gene Ther 2017; 17:442-452. [PMID: 29446734 PMCID: PMC5902862 DOI: 10.2174/1566523218666180214092536] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2017] [Revised: 10/06/2017] [Accepted: 01/14/2018] [Indexed: 12/21/2022]
Abstract
The fractalkine receptor chemokine (C-X3-C motif) receptor 1 (CX3CR1) and its highly selective ligand CX3CL1 mediate chemotaxis and adhesion of immune cells, which are involved in the pathogenesis and progression of numerous inflammatory disorders and malignancies. The CX3CL1/CX3CR1 axis has recently drawn attention as a potential therapeutic target because it is involved in the ontogeny, homeostatic migration, or colonization of renal phagocytes. We performed a Medline/PubMed search to detect recently published studies that explored the relationship between the CX3CL1/CX3CR1 axis and renal diseases and disorders, including diabetic nephropathy, renal allograft rejection, infectious renal diseases, IgA nephropathy, fibrotic kidney disease, lupus nephritis and glomerulonephritis, acute kidney injury and renal carcinoma. Most studies demonstrated its role in promoting renal pathopoiesis; however, several recent studies showed that the CX3CL1/CX3CR1 axis could also reduce renal pathopoiesis. Thus, the CX3CL1/CX3CR1 axis is now considered to be a double-edged sword that could provide novel perspectives into the pathogenesis and treatment of renal diseases and disorders.
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Affiliation(s)
- Quan Zhuang
- Transplantation Center of the 3rd Xiangya Hospital, Central South University, Changsha, Hunan410013, China
| | - Ke Cheng
- Transplantation Center of the 3rd Xiangya Hospital, Central South University, Changsha, Hunan410013, China
| | - Yingzi Ming
- Transplantation Center of the 3rd Xiangya Hospital, Central South University, Changsha, Hunan410013, China
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10
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Xu MX, Yu R, Shao LF, Zhang YX, Ge CX, Liu XM, Wu WY, Li JM, Kong LD. Up-regulated fractalkine (FKN) and its receptor CX3CR1 are involved in fructose-induced neuroinflammation: Suppression by curcumin. Brain Behav Immun 2016; 58:69-81. [PMID: 26765996 DOI: 10.1016/j.bbi.2016.01.001] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/22/2015] [Revised: 12/08/2015] [Accepted: 01/01/2016] [Indexed: 12/11/2022] Open
Abstract
Recent studies suggest that diet-induced fractalkine (FKN) stimulates neuroinflammation in animal models of obesity, yet how it occurs is unclear. This study investigated the role of FKN and it receptor, CX3CR1, in fructose-induced neuroinflammation, and examined curcumin's beneficial effect. Fructose feeding was found to induce hippocampal microglia activation with neuroinflammation through the activation of the Toll-like receptor 4 (TLR4)/nuclear transcription factor κB (NF-κB) signaling, resulting in the reduction of neurogenesis in the dentate gyrus (DG) of mice. Serum FKN levels, as well as hypothalamic FKN and CX3CR1 gene expression, were significantly increased in fructose-fed mice with hypothalamic microglia activation. Hippocampal gene expression of FKN and CX3CR1 was also up-regulated at 14d and normalized at 56d in mice fed with fructose, which were consistent with the change of GFAP. Furthermore, immunostaining showed that GFAP and FKN expression was increased in cornu amonis 1, but decreased in DG in fructose-fed mice. In vitro studies showed that GFAP and FKN expression was stimulated in astrocytes, and suppressed in mixed glial cells exposed to 48h-fructose, with the continual increase of pro-inflammatory cytokines. Thus, increased FKN and CX3CR1 may cause a cross-talk between activated glial cells and neurons, playing an important role in the development of neuroinflammation in fructose-fed mice. Curcumin protected against neuronal damage in hippocampal DG of fructose-fed mice by inhibiting microglia activation and suppressed FKN/CX3CR1 up-regulation in the neuronal network. These results suggest a new therapeutic approach to protect against neuronal damage associated with dietary obesity-associated neuroinflammation.
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Affiliation(s)
- Min-Xuan Xu
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing 210023, PR China
| | - Rong Yu
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing 210023, PR China
| | - Li-Fei Shao
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing 210023, PR China
| | - Yan-Xiu Zhang
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing 210023, PR China
| | - Chen-Xu Ge
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing 210023, PR China
| | - Xin-Meng Liu
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing 210023, PR China
| | - Wen-Yuan Wu
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing 210023, PR China
| | - Jian-Mei Li
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing 210023, PR China.
| | - Ling-Dong Kong
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing 210023, PR China.
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Friggeri A, Cazalis MA, Pachot A, Cour M, Argaud L, Allaouchiche B, Floccard B, Schmitt Z, Martin O, Rimmelé T, Fontaine-Kesteloot O, Page M, Piriou V, Bohé J, Monneret G, Morisset S, Textoris J, Vallin H, Blein S, Maucort-Boulch D, Lepape A, Venet F. Decreased CX3CR1 messenger RNA expression is an independent molecular biomarker of early and late mortality in critically ill patients. CRITICAL CARE : THE OFFICIAL JOURNAL OF THE CRITICAL CARE FORUM 2016; 20:204. [PMID: 27364780 PMCID: PMC4929760 DOI: 10.1186/s13054-016-1362-x] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/15/2016] [Accepted: 05/27/2016] [Indexed: 01/31/2023]
Abstract
Background Chemokine (C-X3-C motif) receptor 1 (CX3CR1) was identified as the most differentially expressed gene between survivors and non-survivors in two independent cohorts of septic shock patients and was proposed as a marker of sepsis-induced immunosuppression. Whether such a biomarker is associated with mortality in the heterogeneous group of critically ill patients is unknown. The primary objective of this study was to evaluate the association between CX3CR1 messenger RNA (mRNA) expression and mortality in intensive care unit (ICU) patients. The secondary objective was to evaluate similar endpoints in the subgroup of septic shock patients. Methods We performed a prospective, multicentre, non-interventional study in six ICUs of university hospitals in Lyon, France. Every consecutive adult patient with systemic inflammatory response syndrome and an expected length of stay in the ICU over 2 days was included. Whole-blood CX3CR1 mRNA expression was measured by quantitative real-time polymerase chain reaction at day 1 (D1) and D3 after inclusion. Results In ICU patients (n = 725), decreased CX3CR1 mRNA expression at D1 was associated with high D7 mortality (AUC 0.70, adjusted OR [aOR] 2.03, 95 % CI 1.19–3.46), while decreased expression at D3 was associated with increased D28 mortality (AUC 0.64, aOR 2.34, 95 % CI 1.45–3.77). In septic shock patients (n = 279), similar associations were observed between decreased D1 CX3CR1 mRNA expression and D7 mortality (AUC 0.69, aOR 2.76, 95 % CI 1.32–5.75) as well as decreased D3 expression and D28 mortality (AUC 0.72, aOR 3.98, 95 % CI 1.72–9.23). These associations were independent of lactacidaemia, Simplified Acute Physiology Score II, Sepsis-related Organ Failure Assessment score and Charlson comorbidity index. Conclusions This study represents the largest evaluation of such an mRNA marker in a heterogeneous cohort of severely injured patients. Our results show that decreased CX3CR1 mRNA expression is associated with increased mortality in ICU patients. This suggests a link between injury-induced immunosuppression and mortality in critically ill patients. In this context, the monitoring of such a host response molecular biomarker could prove very helpful for the identification of patients at high risk of death in the ICU. Electronic supplementary material The online version of this article (doi:10.1186/s13054-016-1362-x) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Arnaud Friggeri
- Hospices Civils de Lyon, Intensive Care Unit, Centre Hospitalier Lyon Sud, Pierre Bénite, France.,Hospices Civils de Lyon-bioMérieux Joint Research Unit, Groupement Hospitalier Edouard Herriot, Lyon, France
| | - Marie-Angélique Cazalis
- Hospices Civils de Lyon-bioMérieux Joint Research Unit, Groupement Hospitalier Edouard Herriot, Lyon, France
| | - Alexandre Pachot
- Hospices Civils de Lyon-bioMérieux Joint Research Unit, Groupement Hospitalier Edouard Herriot, Lyon, France
| | - Martin Cour
- Hospices Civils de Lyon, Medical Intensive Care Unit, Groupement Hospitalier Edouard Herriot, Lyon, France
| | - Laurent Argaud
- Hospices Civils de Lyon, Medical Intensive Care Unit, Groupement Hospitalier Edouard Herriot, Lyon, France
| | - Bernard Allaouchiche
- Hospices Civils de Lyon, Intensive Care Unit, Centre Hospitalier Lyon Sud, Pierre Bénite, France
| | - Bernard Floccard
- Hospices Civils de Lyon, Department of Anaesthesiology and Critical Care Medicine, Groupement Hospitalier Edouard Herriot, University Claude Bernard Lyon 1, Lyon, France
| | - Zoé Schmitt
- Hospices Civils de Lyon, Intensive Care Unit, Hôpital de la Croix Rousse, Lyon, France
| | - Olivier Martin
- Hospices Civils de Lyon, Department of Anaesthesiology and Critical Care Medicine, Groupement Hospitalier Edouard Herriot, University Claude Bernard Lyon 1, Lyon, France
| | - Thomas Rimmelé
- Hospices Civils de Lyon-bioMérieux Joint Research Unit, Groupement Hospitalier Edouard Herriot, Lyon, France.,Hospices Civils de Lyon, Department of Anaesthesiology and Critical Care Medicine, Groupement Hospitalier Edouard Herriot, University Claude Bernard Lyon 1, Lyon, France
| | | | - Mathieu Page
- Hospices Civils de Lyon, Department of Anaesthesiology and Critical Care Medicine, Groupement Hospitalier Edouard Herriot, University Claude Bernard Lyon 1, Lyon, France
| | - Vincent Piriou
- Hospices Civils de Lyon, Intensive Care Unit, Centre Hospitalier Lyon Sud, Pierre Bénite, France
| | - Julien Bohé
- Hospices Civils de Lyon, Intensive Care Unit, Centre Hospitalier Lyon Sud, Pierre Bénite, France
| | - Guillaume Monneret
- Hospices Civils de Lyon-bioMérieux Joint Research Unit, Groupement Hospitalier Edouard Herriot, Lyon, France.,Hospices Civils de Lyon, Immunology Laboratory, Groupement Hospitalier Edouard Herriot, Lyon, France
| | - Stéphane Morisset
- Hospices Civils de Lyon-bioMérieux Joint Research Unit, Groupement Hospitalier Edouard Herriot, Lyon, France
| | - Julien Textoris
- Hospices Civils de Lyon-bioMérieux Joint Research Unit, Groupement Hospitalier Edouard Herriot, Lyon, France.,Hospices Civils de Lyon, Department of Anaesthesiology and Critical Care Medicine, Groupement Hospitalier Edouard Herriot, University Claude Bernard Lyon 1, Lyon, France
| | - Hélène Vallin
- Hospices Civils de Lyon, Intensive Care Unit, Centre Hospitalier Lyon Sud, Pierre Bénite, France.,Hospices Civils de Lyon-bioMérieux Joint Research Unit, Groupement Hospitalier Edouard Herriot, Lyon, France
| | - Sophie Blein
- Hospices Civils de Lyon-bioMérieux Joint Research Unit, Groupement Hospitalier Edouard Herriot, Lyon, France
| | - Delphine Maucort-Boulch
- Hospices Civils de Lyon, Université Lyon 1, CNRS, UMR5558, Service de Biostatistique et Laboratoire de Biométrie et Biologie Evolutive, Equipe Biostatistique-Santé, Lyon, France
| | - Alain Lepape
- Hospices Civils de Lyon, Intensive Care Unit, Centre Hospitalier Lyon Sud, Pierre Bénite, France.,Hospices Civils de Lyon-bioMérieux Joint Research Unit, Groupement Hospitalier Edouard Herriot, Lyon, France
| | - Fabienne Venet
- Hospices Civils de Lyon-bioMérieux Joint Research Unit, Groupement Hospitalier Edouard Herriot, Lyon, France. .,Hospices Civils de Lyon, Immunology Laboratory, Groupement Hospitalier Edouard Herriot, Lyon, France. .,Immunology Laboratory, Hôpital E. Herriot - Hospices Civils de Lyon, 5 place d'Arsonval, 69437, Lyon Cedex 03, France.
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12
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Liu W, Jiang L, Bian C, Liang Y, Xing R, Yishakea M, Dong J. Role of CX3CL1 in Diseases. Arch Immunol Ther Exp (Warsz) 2016; 64:371-83. [PMID: 27098399 DOI: 10.1007/s00005-016-0395-9] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2015] [Accepted: 02/21/2016] [Indexed: 01/04/2023]
Abstract
Chemokines are a family of small 8-10 kDa inducible cytokines. Initially characterized as chemotactic factors, they are now considered to affect not just cellular recruitment. CX3CL1 is a unique chemokine that can exist in a soluble form, as a chemotactic cytokine, or in a membrane-attached form that acts as a binding molecule. Recently, the effects of CX3CL1 on diseases, such as inflammation and cancer, have been supported and confirmed by numerous publications. However, due to its dual effects, CX3CL1 exerts numerous effects on pathophysiological conditions that have both negative and positive consequences on pathogenesis and outcome. This review article summarizes the important scientific and clinical data that now point to a critical role for CX3CL1 in diseases.
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Affiliation(s)
- WangMi Liu
- Department of Orthopedic Surgery, Zhongshan Hospital, Fudan University, 180 Fenglin Road, Shanghai, 200032, China
| | - Libo Jiang
- Department of Orthopedic Surgery, Zhongshan Hospital, Fudan University, 180 Fenglin Road, Shanghai, 200032, China
| | - Chong Bian
- Department of Orthopedic Surgery, Zhongshan Hospital, Fudan University, 180 Fenglin Road, Shanghai, 200032, China
| | - Yun Liang
- Department of Orthopedic Surgery, Zhongshan Hospital, Fudan University, 180 Fenglin Road, Shanghai, 200032, China
| | - Rong Xing
- Department of Orthopedic Surgery, Zhongshan Hospital, Fudan University, 180 Fenglin Road, Shanghai, 200032, China
| | - Mumingjiang Yishakea
- Department of Orthopedic Surgery, Zhongshan Hospital, Fudan University, 180 Fenglin Road, Shanghai, 200032, China
| | - Jian Dong
- Department of Orthopedic Surgery, Zhongshan Hospital, Fudan University, 180 Fenglin Road, Shanghai, 200032, China.
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13
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Hoogendijk AJ, Wiewel MA, van Vught LA, Scicluna BP, Belkasim-Bohoudi H, Horn J, Zwinderman AH, Klein Klouwenberg PMC, Cremer OL, Bonten MJ, Schultz MJ, van der Poll T. Plasma fractalkine is a sustained marker of disease severity and outcome in sepsis patients. CRITICAL CARE : THE OFFICIAL JOURNAL OF THE CRITICAL CARE FORUM 2015; 19:412. [PMID: 26603530 PMCID: PMC4658804 DOI: 10.1186/s13054-015-1125-0] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/11/2015] [Accepted: 11/03/2015] [Indexed: 12/21/2022]
Abstract
Introduction Fractalkine is a chemokine implicated as a mediator in a variety of inflammatory conditions. Knowledge of fractalkine release in patients presenting with infection to the Intensive Care Unit (ICU) is highly limited. The primary objective of this study was to establish whether plasma fractalkine levels are elevated in sepsis and associate with outcome. The secondary objective was to determine whether fractalkine can assist in the diagnosis of infection upon ICU admission. Methods Fractalkine was measured in 1103 consecutive sepsis patients (including 271 patients with community-acquired pneumonia (CAP)) upon ICU admission and at days 2 and 4 thereafter; in 73 ICU patients treated for suspected CAP in whom this diagnosis was refuted in retrospect; and in 5 healthy humans intravenously injected with endotoxin. Results Compared to healthy volunteers, sepsis patients had strongly elevated fractalkine levels. Fractalkine levels increased with the number of organs failing, were higher in patients presenting with shock, but did not vary by site of infection. Non-survivors had sustained elevated fractalkine levels when compared to survivors. Fractalkine was equally elevated in CAP patients and patients treated for CAP but in whom the diagnosis was retrospectively refuted. Fractalkine release induced by intravenous endotoxin followed highly similar kinetics as the endothelial cell marker E-selectin. Conclusions Plasma fractalkine is an endothelial cell derived biomarker that, while not specific for infection, correlates with disease severity in sepsis patients admitted to the ICU. Electronic supplementary material The online version of this article (doi:10.1186/s13054-015-1125-0) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Arie J Hoogendijk
- Center for Experimental and Molecular Medicine, Academic Medical Center, University of Amsterdam, Meibergdreef 9, G2-130, 1105 AZ, Amsterdam, The Netherlands.
| | - Maryse A Wiewel
- Center for Experimental and Molecular Medicine, Academic Medical Center, University of Amsterdam, Meibergdreef 9, G2-130, 1105 AZ, Amsterdam, The Netherlands.
| | - Lonneke A van Vught
- Center for Experimental and Molecular Medicine, Academic Medical Center, University of Amsterdam, Meibergdreef 9, G2-130, 1105 AZ, Amsterdam, The Netherlands.
| | - Brendon P Scicluna
- Center for Experimental and Molecular Medicine, Academic Medical Center, University of Amsterdam, Meibergdreef 9, G2-130, 1105 AZ, Amsterdam, The Netherlands.
| | - Hakima Belkasim-Bohoudi
- Center for Experimental and Molecular Medicine, Academic Medical Center, University of Amsterdam, Meibergdreef 9, G2-130, 1105 AZ, Amsterdam, The Netherlands.
| | - Janneke Horn
- Department of Intensive Care, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands.
| | - Aeilko H Zwinderman
- Clinical Epidemiology Biostatistics and Bioinformatics, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands.
| | - Peter M C Klein Klouwenberg
- Department of Intensive Care Medicine, University Medical Center Utrecht, Utrecht, The Netherlands. .,Department of Medical Microbiology, University Medical Center Utrecht, Utrecht, The Netherlands.
| | - Olaf L Cremer
- Department of Intensive Care Medicine, University Medical Center Utrecht, Utrecht, The Netherlands.
| | - Marc J Bonten
- Department of Medical Microbiology, University Medical Center Utrecht, Utrecht, The Netherlands. .,Julius Center for Health Sciences and Primary Care, University Medical Center Utrecht, Utrecht, The Netherlands.
| | - Marcus J Schultz
- Department of Intensive Care, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands.
| | - Tom van der Poll
- Center for Experimental and Molecular Medicine, Academic Medical Center, University of Amsterdam, Meibergdreef 9, G2-130, 1105 AZ, Amsterdam, The Netherlands. .,Division of Infectious Diseases, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands.
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14
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Chousterman BG, Boissonnas A, Poupel L, Baudesson de Chanville C, Adam J, Tabibzadeh N, Licata F, Lukaszewicz AC, Lombès A, Deterre P, Payen D, Combadière C. Ly6Chigh Monocytes Protect against Kidney Damage during Sepsis via a CX3CR1-Dependent Adhesion Mechanism. J Am Soc Nephrol 2015; 27:792-803. [PMID: 26160897 DOI: 10.1681/asn.2015010009] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2015] [Accepted: 05/20/2015] [Indexed: 12/24/2022] Open
Abstract
Monocytes have a crucial role in both proinflammatory and anti-inflammatory phenomena occurring during sepsis. Monocyte recruitment and activation are orchestrated by the chemokine receptors CX3CR1 and CCR2 and their cognate ligands. However, little is known about the roles of these cells and chemokines during the acute phase of inflammation in sepsis. Using intravital microscopy in a murine model of polymicrobial sepsis, we showed that inflammatory Ly6C(high) monocytes infiltrated kidneys, exhibited altered motility, and adhered strongly to the renal vascular wall in a chemokine receptor CX3CR1-dependent manner. Adoptive transfer of Cx3cr1-proficient monocyte-enriched bone marrow cells into septic Cx3cr1-depleted mice prevented kidney damage and promoted mouse survival. Modulation of CX3CR1 activation in septic mice controlled monocyte adhesion, regulated proinflammatory and anti-inflammatory cytokine expression, and was associated with the extent of kidney lesions such that the number of lesions decreased when CX3CR1 activity increased. Consistent with these results, the pro-adhesive I249 CX3CR1 allele in humans was associated with a lower incidence of AKI in patients with sepsis. These data show that inflammatory monocytes have a protective effect during sepsis via a CX3CR1-dependent adhesion mechanism. This receptor might be a new therapeutic target for kidney injury during sepsis.
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Affiliation(s)
- Benjamin G Chousterman
- Sorbonne Universités, Université Pierre et Marie Curie (UPMC), University of Paris 06, Paris, France; Institut National de la Santé et de la Recherche Médicale (INSERM), U1135, Paris, France; Centre National de la Recherche Scientifique (CNRS), Paris, France; Département d'Anesthésie-Réanimation-Service d'Aide Médicale Urgente (SMUR), Hôpital Lariboisière, Assistance Publique-Hôpitaux de Paris, Paris, France
| | - Alexandre Boissonnas
- Sorbonne Universités, Université Pierre et Marie Curie (UPMC), University of Paris 06, Paris, France; Institut National de la Santé et de la Recherche Médicale (INSERM), U1135, Paris, France; Centre National de la Recherche Scientifique (CNRS), Paris, France;
| | - Lucie Poupel
- Sorbonne Universités, Université Pierre et Marie Curie (UPMC), University of Paris 06, Paris, France; Institut National de la Santé et de la Recherche Médicale (INSERM), U1135, Paris, France; Centre National de la Recherche Scientifique (CNRS), Paris, France
| | - Camille Baudesson de Chanville
- Sorbonne Universités, Université Pierre et Marie Curie (UPMC), University of Paris 06, Paris, France; Institut National de la Santé et de la Recherche Médicale (INSERM), U1135, Paris, France; Centre National de la Recherche Scientifique (CNRS), Paris, France
| | - Julien Adam
- Institut Gustave-Roussy, Université Paris-Sud Villejuif, France
| | - Nahid Tabibzadeh
- Sorbonne Universités, Université Pierre et Marie Curie (UPMC), University of Paris 06, Paris, France; Service des Explorations Fonctionnelles and Institut National de la Santé et de la Recherche Médicale, Assistance Publique-Hôpitaux de Paris, Hôpital Tenon, Paris, France; and
| | - Fabrice Licata
- Sorbonne Universités, Université Pierre et Marie Curie (UPMC), University of Paris 06, Paris, France; Institut National de la Santé et de la Recherche Médicale (INSERM), U1135, Paris, France; Centre National de la Recherche Scientifique (CNRS), Paris, France
| | - Anne-Claire Lukaszewicz
- Département d'Anesthésie-Réanimation-Service d'Aide Médicale Urgente (SMUR), Hôpital Lariboisière, Assistance Publique-Hôpitaux de Paris, Paris, France; INSERM, U1160, Paris, France
| | - Amélie Lombès
- Sorbonne Universités, Université Pierre et Marie Curie (UPMC), University of Paris 06, Paris, France; Institut National de la Santé et de la Recherche Médicale (INSERM), U1135, Paris, France; Centre National de la Recherche Scientifique (CNRS), Paris, France
| | - Philippe Deterre
- Sorbonne Universités, Université Pierre et Marie Curie (UPMC), University of Paris 06, Paris, France; Institut National de la Santé et de la Recherche Médicale (INSERM), U1135, Paris, France; Centre National de la Recherche Scientifique (CNRS), Paris, France
| | - Didier Payen
- Département d'Anesthésie-Réanimation-Service d'Aide Médicale Urgente (SMUR), Hôpital Lariboisière, Assistance Publique-Hôpitaux de Paris, Paris, France; INSERM, U1160, Paris, France
| | - Christophe Combadière
- Sorbonne Universités, Université Pierre et Marie Curie (UPMC), University of Paris 06, Paris, France; Institut National de la Santé et de la Recherche Médicale (INSERM), U1135, Paris, France; Centre National de la Recherche Scientifique (CNRS), Paris, France;
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15
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Su Y, Qu Y, Zhao F, Li H, Mu D, Li X. Regulation of autophagy by the nuclear factor κB signaling pathway in the hippocampus of rats with sepsis. J Neuroinflammation 2015; 12:116. [PMID: 26067996 PMCID: PMC4472259 DOI: 10.1186/s12974-015-0336-2] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2014] [Accepted: 06/03/2015] [Indexed: 11/18/2022] Open
Abstract
BACKGROUND Sepsis with brain dysfunction has contributed to an increase risk of morbidity and mortality. In its pathophysiology, both autophagy and nuclear factor κB (NF-κB) have been suggested to play important roles. Based on the fact that crosstalk between autophagy and NF-κB, two stress-response signaling pathways, has been detected in other pathophysiological processes, this study was undertaken to explore the process of autophagy in the hippocampus of septic rats and the role NF-κB plays in the regulation of autophagy during the process. METHODS Cecal ligation and puncture (CLP) or a sham operation was conducted on male Wistar rats. Pyrrolidine dithiocarbamate (PDTC), an inhibitor of the NF-κB signaling pathway, or a vehicle control, was used to treat with the rats 2 h before the CLP operation. Hematoxylin-eosin staining and biological signal recording was used to measure the morphological and physiological signs of hippocampal dysfunction. An electron microscope was used to observe autophagosome formation and lysosome activation in the hippocampus after CLP. Western blotting and immune histochemistry were used to detect the hippocampus levels of NF-κB and essential proteins involved in formation of the autophagosome (microtubule-associated protein light chain 3 (LC3), Beclin1, Lamp-1, and Rab7). RESULTS Compared with sham-operated rats, the CLP rats showed decreasing mean arterial pressure (MAP), increasing heart rate (HR), and pathological histological changes. CLP rats exhibited not only increased vacuolization through electron micrographs but also increased LC3-II, decreased Beclin1, LAMP-1, and Rab7 through the immunofluorescence and Western blot. However, PDTC + CLP rats revealed that inhibition of the NF-κB signal axis by PDTC increased the levels of LC3-II, Beclin1, LAMP-1, and Rab7 and improved physiological function including blood pressure and heart rate. CONCLUSIONS The autophagy process during the hippocampus of CLP rats might be blocked by the activation of NF-κB signaling pathway. Inhibition of NF-κB signaling pathway could enhance the completion of autophagy with a neuroprotective function in septic brains.
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Affiliation(s)
- YunJie Su
- Department of Pediatrics, West China Second University Hospital, Sichuan University, Chengdu, 610041, China.
| | - Yi Qu
- Department of Pediatrics, West China Second University Hospital, Sichuan University, Chengdu, 610041, China. .,Key Laboratory of Obstetric and Gynecologic and Pediatric Diseases and Birth Defects of Ministry of Education, Sichuan University, Chengdu, 610041, China.
| | - FengYan Zhao
- Department of Pediatrics, West China Second University Hospital, Sichuan University, Chengdu, 610041, China. .,Key Laboratory of Obstetric and Gynecologic and Pediatric Diseases and Birth Defects of Ministry of Education, Sichuan University, Chengdu, 610041, China.
| | - HuaFeng Li
- Key Laboratory of Obstetric and Gynecologic and Pediatric Diseases and Birth Defects of Ministry of Education, Sichuan University, Chengdu, 610041, China. .,Department of Anesthesiology, West China Second University Hospital, Sichuan University, Chengdu, 610041, China.
| | - DeZhi Mu
- Department of Pediatrics, West China Second University Hospital, Sichuan University, Chengdu, 610041, China. .,Key Laboratory of Obstetric and Gynecologic and Pediatric Diseases and Birth Defects of Ministry of Education, Sichuan University, Chengdu, 610041, China. .,Department of Pediatrics and Neurology, University of California, San Francisco, CA, 94143, USA.
| | - XiHong Li
- Department of Pediatrics, West China Second University Hospital, Sichuan University, Chengdu, 610041, China.
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16
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Schneider R, Meusel M, Betz B, Held C, Möller-Ehrlich K, Büttner-Herold M, Wanner C, Gekle M, Sauvant C. Oat1/3 restoration protects against renal damage after ischemic AKI. Am J Physiol Renal Physiol 2015; 308:F198-208. [DOI: 10.1152/ajprenal.00160.2014] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
Abstract
Expression of proximal tubular organic anion transporters Oat1 and Oat3 is reduced by PGE2 after renal ischemia and reperfusion (I/R) injury. We hypothesized that impaired expression of Oat1/3 is decisively involved in the deterioration of renal function after I/R injury. Therefore, we administered probenecid, which blocks proximal tubular indomethacin uptake, to abolish the indomethacin-mediated restoration of Oat1/3 regulation and its effect on renal functional and morphological outcome. Ischemic acute kidney injury (iAKI) was induced in rats by bilateral clamping of renal arteries for 45 min with 24-h follow-up. Low-dose indomethacin (1 mg/kg) was given intraperitoneally (ip) at the end of ischemia. Probenecid (50 mg/kg) was administered ip 20 min later. Indomethacin restored the expression of Oat1/3, PAH net secretion, and PGE2 clearance. Additionally, indomethacin improved kidney function as measured by glomerular filtration rate (GFR), renal perfusion as determined by corrected PAH clearance, and morphology, whereas it reduced renal cortical apoptosis and nitric oxide production. Notably, indomethacin did not affect inflammation parameters in the kidneys (e.g., monocyte chemoattractant protein-1, ED1+ cells). On the other hand, probenecid blocked the indomethacin-induced restoration of Oat1/3 and moreover abrogated all beneficial effects. Our study indicates that the beneficial effect of low-dose indomethacin in iAKI is not due to its anti-inflammatory potency, but in contrast to its restoration of Oat1/3 expression and/or general renal function. Inhibition of proximal tubular indomethacin uptake abrogates the beneficial effect of indomethacin by resetting the PGE2-mediated Oat1/3 impairment, thus reestablishing renal damage. This provides evidence for a mechanistic effect of Oat1/3 in a new model of the induction of renal damage after iAKI.
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Affiliation(s)
- R. Schneider
- Medizinische Klinik und Poliklinik I, Abt. Nephrologie, Universitätsklinikum Würzburg, Würzburg, Germany
| | - M. Meusel
- Medizinische Klinik und Poliklinik I, Abt. Nephrologie, Universitätsklinikum Würzburg, Würzburg, Germany
| | - B. Betz
- Medizinische Klinik und Poliklinik I, Abt. Nephrologie, Universitätsklinikum Würzburg, Würzburg, Germany
| | - C. Held
- Medizinische Klinik und Poliklinik I, Abt. Nephrologie, Universitätsklinikum Würzburg, Würzburg, Germany
| | - K. Möller-Ehrlich
- Zentrum für Experimentelle Molekulare Medizin (ZEMM), Bayerische Julius-Maximilians Universität Würzburg, Würzburg, Germany
| | - M. Büttner-Herold
- Nephropathologische Abteilung im Pathologischen Institut, Universitätsklinikum Erlangen, Erlangen, Germany
| | - C. Wanner
- Medizinische Klinik und Poliklinik I, Abt. Nephrologie, Universitätsklinikum Würzburg, Würzburg, Germany
| | - M. Gekle
- Julius-Bernstein-Institut für Physiologie, Universität Halle-Wittenberg, Halle, Germany; and
| | - C. Sauvant
- Klinik für Anästhesie und Operative Intensivmedizin, Universität Halle-Wittenberg, Halle, Germany
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17
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Wu M, Gu JT, Yi B, Tang ZZ, Tao GC. microRNA-23b regulates the expression of inflammatory factors in vascular endothelial cells during sepsis. Exp Ther Med 2015; 9:1125-1132. [PMID: 25780398 PMCID: PMC4353782 DOI: 10.3892/etm.2015.2224] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2014] [Accepted: 01/07/2015] [Indexed: 12/29/2022] Open
Abstract
miR-23b is a multifunctional microRNA that contributes to the regulation of multiple signaling pathways. It has been reported that miR-23b prevents multiple autoimmune diseases through the regulation of inflammatory cytokine pathways. In addition, the function and underlying mechanisms of miR-23b on sepsis are currently being investigated. In the present study, miR-23b inhibitor and mimics sequences were transfected into human vascular endothelial cells to inhibit and upregulate the expression of miR-23b, respectively. In addition, respective negative control (NC) sequences were transfected. The expression of miR-23b was found to be downregulated in the cells transfected with the mimics NC or inhibitor NC sequences following stimulation with lipopolysaccharide (LPS; P<0.01); however, higher expression levels were maintained in the cells transfected with the mimics sequence and very low levels were observed in the cells transfected with the inhibitor sequence. In addition, the expression levels of nuclear factor (NF)-κB, tumor necrosis factor (TNF)-α, interleukin (IL)-6, intercellular adhesion molecule (ICAM)-1, E-selectin and vascular cell adhesion molecule (VCAM)-1 were shown to increase following induction by LPS in the cells transfected with inhibitor/mimics NC sequences (P<0.05). However, the expression levels of these inflammatory factors decreased in the cells transfected with the mimics sequence, and increased to a greater degree in the cells transfected with the inhibitor sequence, as compared with the inhibitor NC sequences (P<0.05). Therefore, miR-23b may play a significant role in the pathogenesis and progression of sepsis by inhibiting the expression of inflammatory factors, including NF-κB, TNF-α, IL-6, ICAM-1, E-selectin and VCAM-1.
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Affiliation(s)
- Ming Wu
- Department of Anesthesiology, Southwest Hospital, Third Military Medical University, Chongqing 400038, P.R. China
| | - Jian-Teng Gu
- Department of Anesthesiology, Southwest Hospital, Third Military Medical University, Chongqing 400038, P.R. China
| | - Bin Yi
- Department of Anesthesiology, Southwest Hospital, Third Military Medical University, Chongqing 400038, P.R. China
| | - Zhong-Zhi Tang
- Department of Emergency, Wuhan General Hospital of Guangzhou Military Command, Wuhan, Hubei 430070, P.R. China
| | - Guo-Cai Tao
- Department of Anesthesiology, Southwest Hospital, Third Military Medical University, Chongqing 400038, P.R. China
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Ebert T, Hindricks J, Kralisch S, Lossner U, Jessnitzer B, Richter J, Blüher M, Stumvoll M, Fasshauer M. Serum levels of fractalkine are associated with markers of insulin resistance in gestational diabetes. Diabet Med 2014; 31:1014-7. [PMID: 24673545 DOI: 10.1111/dme.12451] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/31/2013] [Revised: 12/22/2013] [Accepted: 03/20/2014] [Indexed: 12/13/2022]
Abstract
AIMS Fractalkine has recently been introduced as an adipokine that improves glucose tolerance. Regulation of fractalkine in gestational diabetes, as well as its association with markers of obesity, glucose and lipid metabolism, inflammation and renal function, has not been elucidated. METHODS Circulating fractalkine was quantified by enzyme-linked immunosorbent assay in 74 women with gestational diabetes and 74 healthy, pregnant control subjects matched for age, BMI, and gestational age. RESULTS Median (interquartile range) levels of fractalkine were not significantly different between the two groups [gestational diabetes: 2.24 (2.16) μg/l; control: 2.45 (1.38) μg/l] (P = 0.461). In multivariate linear regression analysis, fractalkine remained independently associated with homeostasis model assessment of insulin resistance (β = -0.253, P = 0.002) and the proinflammatory adipokine progranulin (β = 0.218, P = 0.007). CONCLUSIONS Circulating fractalkine is not different between women with gestational diabetes and control subjects, but the adipokine is independently associated with markers of insulin resistance and proinflammatory progranulin in pregnancy.
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Affiliation(s)
- T Ebert
- Department of Endocrinology and Nephrology, University of Leipzig, Leipzig, Germany; IFB AdiposityDiseases, Leipzig University Medical Center, Leipzig, Germany
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