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Khan N, Kumar V, Li P, Schlapbach LJ, Boyd AW, Coulthard MG, Woodruff TM. Inhibiting Eph/ephrin signaling reduces vascular leak and endothelial cell dysfunction in mice with sepsis. Sci Transl Med 2024; 16:eadg5768. [PMID: 38657024 DOI: 10.1126/scitranslmed.adg5768] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2023] [Accepted: 04/02/2024] [Indexed: 04/26/2024]
Abstract
Sepsis is a life-threatening disease caused by a dysregulated host response to infection, resulting in 11 million deaths globally each year. Vascular endothelial cell dysfunction results in the loss of endothelial barrier integrity, which contributes to sepsis-induced multiple organ failure and mortality. Erythropoietin-producing hepatocellular carcinoma (Eph) receptors and their ephrin ligands play a key role in vascular endothelial barrier disruption but are currently not a therapeutic target in sepsis. Using a cecal ligation and puncture (CLP) mouse model of sepsis, we showed that prophylactic or therapeutic treatment of mice with EphA4-Fc, a decoy receptor and pan-ephrin inhibitor, resulted in improved survival and a reduction in vascular leak, lung injury, and endothelial cell dysfunction. EphA2-/- mice also exhibited reduced mortality and pathology after CLP compared with wild-type mice. Proteomics of plasma samples from mice with sepsis after CLP revealed dysregulation of a number of Eph/ephrins, including EphA2/ephrin A1. Administration of EphA4-Fc to cultured human endothelial cells pretreated with TNF-α or ephrin-A1 prevented loss of endothelial junction proteins, specifically VE-cadherin, with maintenance of endothelial barrier integrity. In children admitted to hospital with fever and suspected infection, we observed that changes in EphA2/ephrin A1 in serum samples correlated with endothelial and organ dysfunction. Targeting Eph/ephrin signaling may be a potential therapeutic strategy to reduce sepsis-induced endothelial dysfunction and mortality.
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Affiliation(s)
- Nemat Khan
- School of Biomedical Sciences, Faculty of Medicine, University of Queensland, Brisbane, QLD 4072, Australia
- Mayne Academy of Paediatrics, Faculty of Medicine, University of Queensland, Queensland Children's Hospital, Brisbane, QLD 4101, Australia
| | - Vinod Kumar
- School of Biomedical Sciences, Faculty of Medicine, University of Queensland, Brisbane, QLD 4072, Australia
| | - Pengcheng Li
- School of Biomedical Sciences, Faculty of Medicine, University of Queensland, Brisbane, QLD 4072, Australia
- Mayne Academy of Paediatrics, Faculty of Medicine, University of Queensland, Queensland Children's Hospital, Brisbane, QLD 4101, Australia
| | - Luregn J Schlapbach
- Children's Intensive Care Research Program, Child Health Research Centre, University of Queensland, Brisbane, QLD 4101, Australia
- Paediatric Intensive Care Unit, Queensland Children's Hospital, Brisbane, QLD 4101, Australia
- Department of Intensive Care and Neonatology, and Children's Research Center, University Children's Hospital Zürich, University of Zürich, 8032 Zürich, Switzerland
| | - Andrew W Boyd
- Faculty of Medicine, University of Queensland, Brisbane, QLD 4006, Australia
| | - Mark G Coulthard
- Mayne Academy of Paediatrics, Faculty of Medicine, University of Queensland, Queensland Children's Hospital, Brisbane, QLD 4101, Australia
- Paediatric Intensive Care Unit, Queensland Children's Hospital, Brisbane, QLD 4101, Australia
| | - Trent M Woodruff
- School of Biomedical Sciences, Faculty of Medicine, University of Queensland, Brisbane, QLD 4072, Australia
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Lu H. Inflammatory liver diseases and susceptibility to sepsis. Clin Sci (Lond) 2024; 138:435-487. [PMID: 38571396 DOI: 10.1042/cs20230522] [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: 09/03/2023] [Revised: 01/09/2024] [Accepted: 03/12/2024] [Indexed: 04/05/2024]
Abstract
Patients with inflammatory liver diseases, particularly alcohol-associated liver disease and metabolic dysfunction-associated fatty liver disease (MAFLD), have higher incidence of infections and mortality rate due to sepsis. The current focus in the development of drugs for MAFLD is the resolution of non-alcoholic steatohepatitis and prevention of progression to cirrhosis. In patients with cirrhosis or alcoholic hepatitis, sepsis is a major cause of death. As the metabolic center and a key immune tissue, liver is the guardian, modifier, and target of sepsis. Septic patients with liver dysfunction have the highest mortality rate compared with other organ dysfunctions. In addition to maintaining metabolic homeostasis, the liver produces and secretes hepatokines and acute phase proteins (APPs) essential in tissue protection, immunomodulation, and coagulation. Inflammatory liver diseases cause profound metabolic disorder and impairment of energy metabolism, liver regeneration, and production/secretion of APPs and hepatokines. Herein, the author reviews the roles of (1) disorders in the metabolism of glucose, fatty acids, ketone bodies, and amino acids as well as the clearance of ammonia and lactate in the pathogenesis of inflammatory liver diseases and sepsis; (2) cytokines/chemokines in inflammatory liver diseases and sepsis; (3) APPs and hepatokines in the protection against tissue injury and infections; and (4) major nuclear receptors/signaling pathways underlying the metabolic disorders and tissue injuries as well as the major drug targets for inflammatory liver diseases and sepsis. Approaches that focus on the liver dysfunction and regeneration will not only treat inflammatory liver diseases but also prevent the development of severe infections and sepsis.
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Affiliation(s)
- Hong Lu
- Department of Pharmacology, SUNY Upstate Medical University, Syracuse, NY 13210, U.S.A
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3
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Cleuren A, Molema G. Organotypic heterogeneity in microvascular endothelial cell responses in sepsis-a molecular treasure trove and pharmacological Gordian knot. Front Med (Lausanne) 2023; 10:1252021. [PMID: 38020105 PMCID: PMC10665520 DOI: 10.3389/fmed.2023.1252021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2023] [Accepted: 10/18/2023] [Indexed: 12/01/2023] Open
Abstract
In the last decades, it has become evident that endothelial cells (ECs) in the microvasculature play an important role in the pathophysiology of sepsis-associated multiple organ dysfunction syndrome (MODS). Studies on how ECs orchestrate leukocyte recruitment, control microvascular integrity and permeability, and regulate the haemostatic balance have provided a wealth of knowledge and potential molecular targets that could be considered for pharmacological intervention in sepsis. Yet, this information has not been translated into effective treatments. As MODS affects specific vascular beds, (organotypic) endothelial heterogeneity may be an important contributing factor to this lack of success. On the other hand, given the involvement of ECs in sepsis, this heterogeneity could also be leveraged for therapeutic gain to target specific sites of the vasculature given its full accessibility to drugs. In this review, we describe current knowledge that defines heterogeneity of organ-specific microvascular ECs at the molecular level and elaborate on studies that have reported EC responses across organ systems in sepsis patients and animal models of sepsis. We discuss hypothesis-driven, single-molecule studies that have formed the basis of our understanding of endothelial cell engagement in sepsis pathophysiology, and include recent studies employing high-throughput technologies. The latter deliver comprehensive data sets to describe molecular signatures for organotypic ECs that could lead to new hypotheses and form the foundation for rational pharmacological intervention and biomarker panel development. Particularly results from single cell RNA sequencing and spatial transcriptomics studies are eagerly awaited as they are expected to unveil the full spatiotemporal signature of EC responses to sepsis. With increasing awareness of the existence of distinct sepsis subphenotypes, and the need to develop new drug regimen and companion diagnostics, a better understanding of the molecular pathways exploited by ECs in sepsis pathophysiology will be a cornerstone to halt the detrimental processes that lead to MODS.
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Affiliation(s)
- Audrey Cleuren
- Cardiovascular Biology Research Program, Oklahoma Medical Research Foundation, Oklahoma City, OK, United States
| | - Grietje Molema
- Department Pathology and Medical Biology, University Medical Center Groningen, University of Groningen, Groningen, Netherlands
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Zaini A, Jawad HE, Hadi NR. Targeting VEGF using Bevacizumab attenuates sepsis-induced liver injury in a mouse model of cecal ligation and puncture. J Med Life 2023; 16:1488-1498. [PMID: 38313162 PMCID: PMC10835558 DOI: 10.25122/jml-2023-0064] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2023] [Accepted: 04/14/2023] [Indexed: 02/06/2024] Open
Abstract
Sepsis, a life-threatening condition resulting from an uncontrolled host response to infection, often leads to severe liver damage and remains a significant cause of mortality in critically ill patients despite advances in antibiotic therapy and resuscitation. Bevacizumab, a neutralizing antibody targeting vascular endothelial growth factor (VEGF), is approved for treating certain cancers. However, its potential impact on sepsis-related liver injury is not well understood. This study aimed to explore the potential hepatoprotective effect of Bevacizumab on sepsis-induced liver injury. Twenty-four mice were divided into four groups: a sham group subjected to a midline incision only, a cecal ligation and puncture induction (CLP) group, a vehicle-treated group that received a vehicle one hour before CLP induction, and a Bevacizumab-treated group that received Bevacizumab one hour before CLP induction. Blood samples were collected, and angiopoietin-2 (ANGPT2), alanine transaminase (ALT), and aspartate transaminase (AST) serum levels were measured. Liver tissue homogenates were analyzed for IL-6, TNFα, intracellular adhesion molecule (ICAM-1), macrophage inhibitory factor (MIF), vascular endothelial growth factor (VEGF), F2-isoprostane, and caspase-11 levels. A histological examination was performed to assess the extent of liver damage. Mice exposed to CLP had high levels of the biomarkers mentioned above with a high degree of liver injury compared to the sham group. In contrast, treatment with Bevacizumab notably reduced these markers and mitigated liver damage. In conclusion, Bevacizumab may be a protective agent against sepsis-induced liver injury.
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Affiliation(s)
- Aula Zaini
- Department of Pharmacology and Therapeutics, Faculty of Medicine, University of Kufa, Najaf, Iraq
| | | | - Najah Rayish Hadi
- Department of Pharmacology and Therapeutics, Faculty of Medicine, University of Kufa, Najaf, Iraq
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Yao H, Zhou Y, Li T, Li Y, Li F, Zhang G, Fu X, Kang Y, Wu Q. Bioinformatic identification and experiment validation revealed that ACTG1 is a promising prognostic signature and therapeutic target for sepsis. J Leukoc Biol 2023; 114:325-334. [PMID: 37368839 DOI: 10.1093/jleuko/qiad072] [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: 12/16/2022] [Revised: 05/24/2023] [Accepted: 06/08/2023] [Indexed: 06/29/2023] Open
Abstract
In the intensive care unit, sepsis is a prevalent clinical syndrome (i.e. the final pathway to death from most infections). Peripheral blood gene expression profiling is becoming more and more accepted as a potential diagnostic or prognostic tool. This work aimed to recognize genes related to sepsis, providing potential translational therapeutic targets. RNA sequencing was performed on peripheral blood mononuclear cells from 20 healthy control subjects and 51 sepsis patients. Weighted gene coexpression network analysis was employed to pick out sepsis-related and immunocyte-related gene modules. Genes in the yellow module are primarily involved in excessive inflammation and immune suppression. STRING and Cytoscape were combined to identify ACTG1 and IQGAP1 as hub genes with highest connective degree, and prognostic predication value of ACTG1 was confirmed. Both univariate and multivariate logistic regression analyses were carried out. ACTG1 messenger RNA expression was increased in animal and in cell-related sepsis models. Small interfering RNA revealed decreasing ACTG1 can reduce the in vitro sepsis model apoptosis. We have authenticated ACTG1 as a reliable signature of a poor outcome of sepsis and promising therapeutic targets for sepsis.
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Affiliation(s)
- Hua Yao
- Department of Critical Care Medicine, West China Hospital, Sichuan University, No.37 Guoxue Alley, Wuhou District, Chengdu, 610041, Sichuan, China
| | - Yue Zhou
- Department of Critical Care Medicine, West China Hospital, Sichuan University, No.37 Guoxue Alley, Wuhou District, Chengdu, 610041, Sichuan, China
| | - Tingting Li
- Department of Critical Care Medicine, West China Hospital, Sichuan University, No.37 Guoxue Alley, Wuhou District, Chengdu, 610041, Sichuan, China
| | - Yao Li
- Department of Critical Care Medicine, West China Hospital, Sichuan University, No.37 Guoxue Alley, Wuhou District, Chengdu, 610041, Sichuan, China
| | - Fan Li
- Department of Critical Care Medicine, West China Hospital, Sichuan University, No.37 Guoxue Alley, Wuhou District, Chengdu, 610041, Sichuan, China
| | - Geng Zhang
- Department of Critical Care Medicine, West China Hospital, Sichuan University, No.37 Guoxue Alley, Wuhou District, Chengdu, 610041, Sichuan, China
| | - Xin Fu
- Department of Critical Care Medicine, West China Hospital, Sichuan University, No.37 Guoxue Alley, Wuhou District, Chengdu, 610041, Sichuan, China
| | - Yan Kang
- Department of Critical Care Medicine, West China Hospital, Sichuan University, No.37 Guoxue Alley, Wuhou District, Chengdu, 610041, Sichuan, China
| | - Qin Wu
- Department of Critical Care Medicine, West China Hospital, Sichuan University, No.37 Guoxue Alley, Wuhou District, Chengdu, 610041, Sichuan, China
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Ramos Maia DR, Otsuki DA, Rodrigues CE, Zboril S, Sanches TR, Neto AND, Andrade L, Auler JOC. TREATMENT WITH HUMAN UMBILICAL CORD-DERIVED MESENCHYMAL STEM CELLS IN A PIG MODEL OF SEPSIS-INDUCED ACUTE KIDNEY INJURY: EFFECTS ON MICROVASCULAR ENDOTHELIAL CELLS AND TUBULAR CELLS IN THE KIDNEY. Shock 2023; 60:469-477. [PMID: 37548627 DOI: 10.1097/shk.0000000000002191] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/08/2023]
Abstract
ABSTRACT Background: Approximately 50% of patients with sepsis develop acute kidney injury (AKI), which is predictive of poor outcomes, with mortality rates of up to 70%. The endothelium is a major target for treatments aimed at preventing the complications of sepsis. We hypothesized that human umbilical cord-derived mesenchymal stem cells (hUC-MSCs) could attenuate tubular and endothelial injury in a porcine model of sepsis-induced AKI. Methods: Anesthetized pigs were induced to fecal peritonitis, resulting in septic shock, and were randomized to treatment with fluids, vasopressors, and antibiotics (sepsis group; n = 11) or to that same treatment plus infusion of 1 × 10 6 cells/kg of hUC-MSCs (sepsis+MSC group; n = 11). Results: At 24 h after sepsis induction, changes in serum creatinine and mean arterial pressure were comparable between the two groups, as was mortality. However, the sepsis+MSC group showed some significant differences in comparison with the sepsis group: lower fractional excretions of sodium and potassium; greater epithelial sodium channel protein expression; and lower protein expression of the Na-K-2Cl cotransporter and aquaporin 2 in the renal medulla. Expression of P-selectin, thrombomodulin, and vascular endothelial growth factor was significantly lower in the sepsis+MSC group than in the sepsis group, whereas that of Toll-like receptor 4 (TLR4) and nuclear factor-kappa B (NF-κB) was lower in the former. Conclusion: Treatment with hUC-MSCs seems to protect endothelial and tubular cells in sepsis-induced AKI, possibly via the TLR4/NF-κB signaling pathway. Therefore, it might be an effective treatment for sepsis-induced AKI.
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Affiliation(s)
- Débora Rothstein Ramos Maia
- Laboratory for Medical Research 8, Anesthesiology Department, Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo, São Paulo, Brazil
| | - Denise Aya Otsuki
- Laboratory for Medical Research 8, Anesthesiology Department, Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo, São Paulo, Brazil
| | - Camila Eleutério Rodrigues
- Laboratory for Medical Research 12, Division of Nephrology, Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo, São Paulo, Brazil
| | - Sabrina Zboril
- Laboratory for Medical Research 8, Anesthesiology Department, Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo, São Paulo, Brazil
| | - Talita Rojas Sanches
- Laboratory for Medical Research 12, Division of Nephrology, Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo, São Paulo, Brazil
| | - Amaro Nunes Duarte Neto
- Division of Pathology, Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo, São Paulo, Brazil
| | - Lúcia Andrade
- Laboratory for Medical Research 12, Division of Nephrology, Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo, São Paulo, Brazil
| | - José Otávio Costa Auler
- Laboratory for Medical Research 8, Anesthesiology Department, Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo, São Paulo, Brazil
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Gaudette S, Smart L, Woodward AP, Sharp CR, Hughes D, Bailey SR, Dandrieux JRS, Santos L, Boller M. Biomarkers of endothelial activation and inflammation in dogs with organ dysfunction secondary to sepsis. Front Vet Sci 2023; 10:1127099. [PMID: 37520007 PMCID: PMC10372490 DOI: 10.3389/fvets.2023.1127099] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2022] [Accepted: 06/09/2023] [Indexed: 08/01/2023] Open
Abstract
Introduction Alteration in endothelial function during sepsis is thought to play a key role in the progression of organ failure. We herein compared plasma concentrations of endothelial activation biomarkers vascular endothelial growth factor (VEGF), hyaluronan (HA), plasminogen activator inhibitor-1 (PAI-1) and von Willebrand factor (vWF), as well as inflammatory mediator concentrations (IL-6, IL-8, IL-10, C-reactive protein and monocyte chemoattractant protein-1) in dogs with sepsis to healthy dogs. Methods This study was a multicenter observational clinical trial conducted at two university teaching hospitals from February 2016 until July 2017. The study included 18 client-owned dogs hospitalized with sepsis and at least one distant organ dysfunction, as well as 20 healthy dogs. Plasma biomarker concentrations were measured using ELISA. Severity of illness in dogs with sepsis was calculated using the 5-variable acute physiologic and laboratory evaluation (APPLEFAST) score. Biomarker concentrations were compared between septic and healthy dogs using linear models. Results Septic peritonitis was the most frequent source of sepsis (11/18; 61%), followed by pneumonia (4/18; 22%). Ten dogs (56%) had only 1 organ dysfunction, whereas 3 dogs (17%) had 2, 3 (17%) had 3, 1 (6%) had 4 and 1 (6%) had 5 organ dysfunctions. The median APPLEFAST score in the septic dogs was 28.5 (Q1-Q3, 24-31). Mean plasma concentrations of all endothelial and inflammatory biomarkers, except vWF, were higher in the sepsis cohort than in controls. The mean endothelial biomarker concentrations in the septic cohort ranged from ~2.7-fold higher for HA (difference in means; 118.2 ng/mL, 95% credible limit; 44.5-221.7) to ~150-fold for VEGF (difference in means; 76.6 pg./mL, 95% credible limit; 33.0-143.4), compared to the healthy cohort. Fifteen dogs with sepsis (83%) died; 7 (46%) were euthanized and 8 (53%) died during hospitalization. Conclusion Dogs with naturally occurring sepsis and organ dysfunction had higher mean concentrations of biomarkers of endothelial activation and inflammation compared to healthy dogs, broadening our understanding of the pathophysiology of sepsis secondary to endothelial dysfunction.
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Affiliation(s)
- Sarah Gaudette
- Melbourne Veterinary School, Faculty of Veterinary and Agricultural Sciences, University of Melbourne, Melbourne, VIC, Australia
| | - Lisa Smart
- School of Veterinary Medicine, Murdoch University, Perth, WA, Australia
- Small Animal Specialist Hospital, Tuggerah, NSW, Australia
| | - Andrew P. Woodward
- Melbourne Veterinary School, Faculty of Veterinary and Agricultural Sciences, University of Melbourne, Melbourne, VIC, Australia
| | - Claire R. Sharp
- School of Veterinary Medicine, Murdoch University, Perth, WA, Australia
- Center for Terrestrial Ecosystem Science and Sustainability, Harry Butler Institute, Murdoch University, Murdoch, WA, Australia
| | - Dez Hughes
- Melbourne Veterinary School, Faculty of Veterinary and Agricultural Sciences, University of Melbourne, Melbourne, VIC, Australia
| | - Simon R. Bailey
- Melbourne Veterinary School, Faculty of Veterinary and Agricultural Sciences, University of Melbourne, Melbourne, VIC, Australia
| | - Julien R. S. Dandrieux
- Melbourne Veterinary School, Faculty of Veterinary and Agricultural Sciences, University of Melbourne, Melbourne, VIC, Australia
| | - Leilani Santos
- Melbourne Veterinary School, Faculty of Veterinary and Agricultural Sciences, University of Melbourne, Melbourne, VIC, Australia
| | - Manuel Boller
- Melbourne Veterinary School, Faculty of Veterinary and Agricultural Sciences, University of Melbourne, Melbourne, VIC, Australia
- VCA Canada Central Victoria Veterinary Hospital, Victoria, BC, Canada
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Lin CK, Tsai YH, Kao KC, Lin CM, Zhou SK, Ho MC, Huang SY, Fang YH, Chang CC, Lee WC, Lee YL, Chen MC, Hsieh MJ, Lin YC, Hung MS, Kuo WC, Lin BS. Serum vascular endothelial growth factor affects tissue fluid accumulation and is associated with deteriorating tissue perfusion and oxygenation in severe sepsis: a prospective observational study. Eur J Med Res 2023; 28:155. [PMID: 37085944 PMCID: PMC10120235 DOI: 10.1186/s40001-023-01119-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2022] [Accepted: 04/11/2023] [Indexed: 04/23/2023] Open
Abstract
BACKGROUND Positive fluid balance and tissue fluid accumulation are associated with adverse outcomes in sepsis. Vascular endothelial growth factor (VEGF) increases in sepsis, promotes vascular permeability, and may affect tissue fluid accumulation and oxygenation. We used near-infrared spectroscopy (NIRS) to estimate tissue hemoglobin (Hb) oxygenation and water (H2O) levels to investigate their relationship with serum VEGF levels. MATERIAL AND METHODS New-onset severe sepsis patients admitted to the intensive care unit were enrolled. Relative tissue concentrations of oxy-Hb ([HbO2]), deoxy-Hb ([HbR]), total Hb ([HbT]), and H2O ([H2O]) were estimated by near-infrared spectroscopy (NIRS) for three consecutive days and serum VEGF levels were measured. Comparisons between oliguric and non-oliguric patients were conducted and the correlations between variables were analyzed. RESULTS Among 75 eligible patients, compared with non-oliguric patients, oliguric patients were administrated more intravascular fluids (median [IQR], 1926.00 [1348.50-3092.00] mL/day vs. 1069.00 [722.00-1486.75] mL/day, p < 0.001) and had more positive daily net intake and output (mean [SD], 1,235.06 [1303.14] mL/day vs. 313.17 [744.75] mL/day, p = 0.012), lower [HbO2] and [HbT] over the three-day measurement (analyzed by GEE p = 0.01 and 0.043, respectively) and significantly higher [H2O] on the third day than on the first two days (analyzed by GEE p = 0.034 and 0.018, respectively). Overall, serum VEGF levels were significantly negatively correlated with [HbO2] and [HbT] (rho = - 0.246 and - 0.266, p = 0.042 and 0.027, respectively) but positively correlated with [H2O] (rho = 0.449, p < 0.001). Subgroup analysis revealed a significant correlation between serum VEGF and [H2O] in oliguric patients (rho = 0.532, p = 0.003). Multiple regression analysis determined the independent effect of serum VEGF on [H2O] (standardized coefficient = 0.281, p = 0.038). CONCLUSIONS In severe sepsis, oliguria relates to higher positive fluid balance, lower tissue perfusion and oxygenation, and progressive tissue fluid accumulation. Elevated serum VEGF is associated with worsening tissue perfusion and oxygenation and independently affects tissue fluid accumulation.
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Affiliation(s)
- Chin-Kuo Lin
- Department of Pulmonary and Critical Care Medicine, Chang Gung Memorial Hospital, No. 6, West Sec. Chiapu Rd., Putzu City, Chiayi County, 61363, Taiwan
- Graduate Institute of Clinical Medicine Sciences, College of Medicine, Chang Gung University, No. 259, Wenhua 1st Rd., Guishan Dist., Taoyuan, 33302, Taiwan
| | - Ying-Huang Tsai
- Department of Pulmonary and Critical Care Medicine, Chang Gung Memorial Hospital, No. 5, Fuxing St., Guishan Dist., Linkou, Taoyuan City, 333, Taiwan
| | - Kuo-Chin Kao
- Department of Pulmonary and Critical Care Medicine, Chang Gung Memorial Hospital, No. 5, Fuxing St., Guishan Dist., Linkou, Taoyuan City, 333, Taiwan
- Department of Respiratory Therapy, Chang Gung University College of Medicine, Taoyuan, 33302, Taiwan
- Department of Respiratory Therapy, Chang Gung Memorial Hospital, Chang Gung University College of Medicine, Taoyuan, 33305, Taiwan
| | - Chieh-Mo Lin
- Department of Pulmonary and Critical Care Medicine, Chang Gung Memorial Hospital, No. 6, West Sec. Chiapu Rd., Putzu City, Chiayi County, 61363, Taiwan
- Chang Gung University of Science and Technology, No. 2, West Sec. Jiapu Rd., Puzi City, Chiayi County, 61363, Taiwan
| | - Shao-Kui Zhou
- Institute of Imaging and Biomedical Photonics, National Yang Ming Chiao Tung University, No. 301, Gaotie 3Rd Road, Guiren Dist., Tainan City, 71150, Taiwan
| | - Meng-Chin Ho
- Department of Pulmonary and Critical Care Medicine, Chang Gung Memorial Hospital, No. 6, West Sec. Chiapu Rd., Putzu City, Chiayi County, 61363, Taiwan
| | - Shu-Yi Huang
- Department of Pulmonary and Critical Care Medicine, Chang Gung Memorial Hospital, No. 6, West Sec. Chiapu Rd., Putzu City, Chiayi County, 61363, Taiwan
- Chang Gung University of Science and Technology, No. 2, West Sec. Jiapu Rd., Puzi City, Chiayi County, 61363, Taiwan
| | - Yu-Hung Fang
- Department of Pulmonary and Critical Care Medicine, Chang Gung Memorial Hospital, No. 6, West Sec. Chiapu Rd., Putzu City, Chiayi County, 61363, Taiwan
| | - Che-Chia Chang
- Department of Pulmonary and Critical Care Medicine, Chang Gung Memorial Hospital, No. 6, West Sec. Chiapu Rd., Putzu City, Chiayi County, 61363, Taiwan
| | - Wei-Chun Lee
- Department of Pulmonary and Critical Care Medicine, Chang Gung Memorial Hospital, No. 6, West Sec. Chiapu Rd., Putzu City, Chiayi County, 61363, Taiwan
| | - Yueh-Lin Lee
- Department of Pulmonary and Critical Care Medicine, Chang Gung Memorial Hospital, No. 6, West Sec. Chiapu Rd., Putzu City, Chiayi County, 61363, Taiwan
| | - Min-Chi Chen
- Department of Public Health, Biostatistics Consulting Center, College of Medicine, Chang Gung University, No. 259, Wenhua 1st Road, Guishan Dist., Guishan, Taoyuan City, 33302, Taiwan
- Department of Hematology and Oncology, Chang Gung Memorial Hospital, No. 6, West Sec. Chiapu Rd, Putzu City, Chiayi County, 61363, Taiwan
| | - Meng-Jer Hsieh
- Department of Pulmonary and Critical Care Medicine, Chang Gung Memorial Hospital, No. 5, Fuxing St., Guishan Dist., Linkou, Taoyuan City, 333, Taiwan
| | - Yu-Ching Lin
- Department of Pulmonary and Critical Care Medicine, Chang Gung Memorial Hospital, No. 6, West Sec. Chiapu Rd., Putzu City, Chiayi County, 61363, Taiwan
- Department of Respiratory Care, Chang Gung Memorial Hospital, No. 6, West Sec. Chiapu Rd, Putzu City, Chiayi County, 61363, Taiwan
- Department of Medicine, College of Medicine, Chang Gung University, No. 259, Wenhua 1st Road, Guishan Dist., Taoyuan City, 33302, Taiwan
| | - Ming-Szu Hung
- Department of Pulmonary and Critical Care Medicine, Chang Gung Memorial Hospital, No. 6, West Sec. Chiapu Rd., Putzu City, Chiayi County, 61363, Taiwan
- Department of Respiratory Care, Chang Gung Memorial Hospital, No. 6, West Sec. Chiapu Rd, Putzu City, Chiayi County, 61363, Taiwan
- Department of Medicine, College of Medicine, Chang Gung University, No. 259, Wenhua 1st Road, Guishan Dist., Taoyuan City, 33302, Taiwan
| | - Wen-Chun Kuo
- Department of Pulmonary and Critical Care Medicine, Chang Gung Memorial Hospital, No. 6, West Sec. Chiapu Rd., Putzu City, Chiayi County, 61363, Taiwan
| | - Bor-Shyh Lin
- Institute of Imaging and Biomedical Photonics, National Yang Ming Chiao Tung University, No. 301, Gaotie 3Rd Road, Guiren Dist., Tainan City, 71150, Taiwan.
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Liao S, Lin Y, Liu L, Yang S, Lin Y, He J, Shao Y. ADAM10-a "multitasker" in sepsis: focus on its posttranslational target. Inflamm Res 2023; 72:395-423. [PMID: 36565333 PMCID: PMC9789377 DOI: 10.1007/s00011-022-01673-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2022] [Revised: 07/25/2022] [Accepted: 11/30/2022] [Indexed: 12/25/2022] Open
Abstract
BACKGROUND Sepsis has a complex pathogenesis in which the uncontrolled systemic inflammatory response triggered by infection leads to vascular barrier disruption, microcirculation dysfunction and multiple organ dysfunction syndrome. Numerous recent studies reveal that a disintegrin and metalloproteinase 10 (ADAM10) acts as a "molecular scissor" playing a pivotal role in the inflammatory response during sepsis by regulating proteolysis by cleaving various membrane protein substrates, including proinflammatory cytokines, cadherins and Notch, which are involved in intercellular communication. ADAM10 can also act as the cellular receptor for Staphylococcus aureus α-toxin, leading to lethal sepsis. However, its substrate-specific modulation and precise targets in sepsis have not yet to be elucidated. METHODS We performed a computer-based online search using PubMed and Google Scholar for published articles concerning ADAM10 and sepsis. CONCLUSIONS In this review, we focus on the functions of ADAM10 in sepsis-related complex endothelium-immune cell interactions and microcirculation dysfunction through the diversity of its substrates and its enzymatic activity. In addition, we highlight the posttranslational mechanisms of ADAM10 at specific subcellular sites, or in multimolecular complexes, which will provide the insight to intervene in the pathophysiological process of sepsis caused by ADAM10 dysregulation.
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Affiliation(s)
- Shuanglin Liao
- grid.410560.60000 0004 1760 3078The Intensive Care Unit, The First Dongguan Affiliated Hospital, Guangdong Medical University, Jiaoping Road 42, Tangxia Town, Dongguan, 523710 Guangdong China
| | - Yao Lin
- The Key Laboratory of Organ Dysfunction and Protection Translational Medicine, Jieyang Medical Research Center, Jieyang People’s Hospital, Tianfu Road 107, Rongcheng District, Jieyang, 522000 Guangdong China
| | - Lizhen Liu
- grid.410560.60000 0004 1760 3078The Intensive Care Unit, The First Dongguan Affiliated Hospital, Guangdong Medical University, Jiaoping Road 42, Tangxia Town, Dongguan, 523710 Guangdong China
| | - Shuai Yang
- grid.410560.60000 0004 1760 3078The Intensive Care Unit, The First Dongguan Affiliated Hospital, Guangdong Medical University, Jiaoping Road 42, Tangxia Town, Dongguan, 523710 Guangdong China
| | - YingYing Lin
- The Key Laboratory of Organ Dysfunction and Protection Translational Medicine, Jieyang Medical Research Center, Jieyang People’s Hospital, Tianfu Road 107, Rongcheng District, Jieyang, 522000 Guangdong China
| | - Junbing He
- The Key Laboratory of Organ Dysfunction and Protection Translational Medicine, Jieyang Medical Research Center, Jieyang People’s Hospital, Tianfu Road 107, Rongcheng District, Jieyang, 522000 Guangdong China
| | - Yiming Shao
- grid.410560.60000 0004 1760 3078The Intensive Care Unit, The First Dongguan Affiliated Hospital, Guangdong Medical University, Jiaoping Road 42, Tangxia Town, Dongguan, 523710 Guangdong China
- grid.410560.60000 0004 1760 3078The Key Laboratory of Sepsis Translational Medicine, Guangdong Medical University, Zhanjiang, Guangdong China
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10
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Li SD, Xing W, Wang SC, Li YB, Jiang H, Zheng HX, Li XM, Yang J, Guo DB, Xie XY, Jiang RQ, Fan C, Li L, Xu X, Fei J. Fibulin2: a negative regulator of BMSC osteogenic differentiation in infected bone fracture healing. Exp Mol Med 2023; 55:443-456. [PMID: 36797542 PMCID: PMC9981700 DOI: 10.1038/s12276-023-00942-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2022] [Revised: 11/26/2022] [Accepted: 12/02/2022] [Indexed: 02/18/2023] Open
Abstract
Bone fracture remains a common occurrence, with a population-weighted incidence of approximately 3.21 per 1000. In addition, approximately 2% to 50% of patients with skeletal fractures will develop an infection, one of the causes of disordered bone healing. Dysfunction of bone marrow mesenchymal stem cells (BMSCs) plays a key role in disordered bone repair. However, the specific mechanisms underlying BMSC dysfunction caused by bone infection are largely unknown. In this study, we discovered that Fibulin2 expression was upregulated in infected bone tissues and that BMSCs were the source of infection-induced Fibulin2. Importantly, Fibulin2 knockout accelerated mineralized bone formation during skeletal development and inhibited inflammatory bone resorption. We demonstrated that Fibulin2 suppressed BMSC osteogenic differentiation by binding to Notch2 and inactivating the Notch2 signaling pathway. Moreover, Fibulin2 knockdown restored Notch2 pathway activation and promoted BMSC osteogenesis; these outcomes were abolished by DAPT, a Notch inhibitor. Furthermore, transplanted Fibulin2 knockdown BMSCs displayed better bone repair potential in vivo. Altogether, Fibulin2 is a negative regulator of BMSC osteogenic differentiation that inhibits osteogenesis by inactivating the Notch2 signaling pathway in infected bone.
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Affiliation(s)
- Shi-Dan Li
- Department of Orthopaedics, State Key Laboratory of Trauma, Burn and Combined Injury, Daping Hospital, Army Medical University, Chongqing, 400042, People's Republic of China
| | - Wei Xing
- Department of Stem Cell and Regenerative Medicine, State Key Laboratory of Trauma, Burn and Combined Injury, Daping Hospital, Army Medical University, Chongqing, 400042, People's Republic of China
| | - Shao-Chuan Wang
- Department of Orthopaedics, State Key Laboratory of Trauma, Burn and Combined Injury, Daping Hospital, Army Medical University, Chongqing, 400042, People's Republic of China
| | - You-Bin Li
- Department of Orthopaedics, State Key Laboratory of Trauma, Burn and Combined Injury, Daping Hospital, Army Medical University, Chongqing, 400042, People's Republic of China
| | - Hao Jiang
- Department of Orthopaedics, Affiliated Hospital of Southwest Medical University, Luzhou, 646000, People's Republic of China
| | - Han-Xuan Zheng
- Department of Nursing, Montreal Neurological Hospital, 3801 Rue University, Montréal, QC H3A 2B4, Canada
| | - Xiao-Ming Li
- Department of Military Traffic Injury Prevention, Daping Hospital, Army Medical University, Chongqing, 400042, People's Republic of China
| | - Jing Yang
- Department of Emergency, State Key Laboratory of Trauma, Burn and Combined Injury, Daping Hospital, Army Medical University, Chongqing, 400042, People's Republic of China
| | - De-Bin Guo
- Department of Emergency, State Key Laboratory of Trauma, Burn and Combined Injury, Daping Hospital, Army Medical University, Chongqing, 400042, People's Republic of China
| | - Xiao-Yu Xie
- Department of Orthopaedics, State Key Laboratory of Trauma, Burn and Combined Injury, Daping Hospital, Army Medical University, Chongqing, 400042, People's Republic of China
| | - Ren-Qing Jiang
- Department for Combat Casualty Care Training, Training Base for Army Health Care, Third Military Medical University, Chongqing, 400042, People's Republic of China
| | - Chao Fan
- Medical Research Center, The Third People's Hospital of Chengdu, Affiliated Hospital of Southwest Jiaotong University, Southwest Jiaotong University, Chengdu, 610031, People's Republic of China
| | - Lei Li
- Department of Stem Cell and Regenerative Medicine, State Key Laboratory of Trauma, Burn and Combined Injury, Daping Hospital, Army Medical University, Chongqing, 400042, People's Republic of China
| | - Xiang Xu
- Department of Stem Cell and Regenerative Medicine, State Key Laboratory of Trauma, Burn and Combined Injury, Daping Hospital, Army Medical University, Chongqing, 400042, People's Republic of China.
| | - Jun Fei
- Department of Emergency, State Key Laboratory of Trauma, Burn and Combined Injury, Daping Hospital, Army Medical University, Chongqing, 400042, People's Republic of China.
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11
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Abd-Rabou AA, Ahmed HH, Mohamed SH, Kotob SE, Kishta MS. Nanotherapy: New Approach for Impeding Hepatic Cancer Microenvironment via Targeting Multiple Molecular Pathways. Asian Pac J Cancer Prev 2022; 23:4261-4274. [PMID: 36580009 PMCID: PMC9971455 DOI: 10.31557/apjcp.2022.23.12.4261] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2022] [Indexed: 12/30/2022] Open
Abstract
OBJECTIVE Hepatocellular carcinoma (HCC) microenvironment has been recognized as a key contributor for cancer progression, metastasis, and drug resistance. The crosstalk between tumor cells, the vascular endothelial growth factor (VEGF), and the chemokine (C-C motif) ligand 2 (CCL2) signaling networks mediates immunoinhibitory impact and facilitates tumor angiogenesis. The current investigation aimed at exploring the potent anti-cancer activity of the newly designed nano-based anti-cancer therapy comprising anti-VEGF drug, avastin (AV), and CCR2 antagonist (CR) to counteract HCC and tracking its mode of action in vivo. METHODS The prepared AV, CR, and AVCR nanoprototypes were characterized by nanoscale characterization techniques in our previous work. Here, they are applied for unearthing their anti-cancer properties / mechanisms in hepatic cancer-induced rats via analyzing protein levels and genetic expression of the elements incorporated in the angiogenesis, apoptosis, and metastasis signalling pathways. RESULTS The present results revealed a significant down-regulation in the angiogenesis, survival and metastasis indices along with up-regulation in the pro-apoptotic mediators upon treatment of hepatic cancer-bearing rats with the novel synthesized nanomaterials when compared with the untreated counterparts. We showed across HCC model that anti-VEGF in combination with CCR2 antagonism therapy leads to sensitization and enhanced tumor response over anti-VEGF or CCR2 antagonism monotherapy, particularly in its nanoscale formulation. CONCLUSION The present approach provides new mechanistic insights into the powerful anti-hepatic cancer advantage of the novel nanoprototypes which is correlated with modulating critical signal transduction pathways implicated in tumor microenviroment such as angiogenesis, apoptosis and metastasis. This research work presents a substantial foundation for future studies focused on prohibiting cancer progression and recovery by targeting tumor microenviroment.
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Affiliation(s)
- Ahmed A Abd-Rabou
- Hormones Department, Medical Research and Clinical Studies Institute, National Research Centre, Cairo, Egypt. ,Stem Cell Lab, Center of Excellence for Advanced Sciences, National Research Centre, Dokki, Giza, P.O 12622, Egypt. ,For Correspondence:
| | - Hanaa H Ahmed
- Hormones Department, Medical Research and Clinical Studies Institute, National Research Centre, Cairo, Egypt. ,Stem Cell Lab, Center of Excellence for Advanced Sciences, National Research Centre, Dokki, Giza, P.O 12622, Egypt.
| | - Safaa H Mohamed
- Hormones Department, Medical Research and Clinical Studies Institute, National Research Centre, Cairo, Egypt.
| | - Soheir E Kotob
- Hormones Department, Medical Research and Clinical Studies Institute, National Research Centre, Cairo, Egypt.
| | - Mohamed S Kishta
- Hormones Department, Medical Research and Clinical Studies Institute, National Research Centre, Cairo, Egypt. ,Stem Cell Lab, Center of Excellence for Advanced Sciences, National Research Centre, Dokki, Giza, P.O 12622, Egypt.
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12
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He FF, Wang YM, Chen YY, Huang W, Li ZQ, Zhang C. Sepsis-induced AKI: From pathogenesis to therapeutic approaches. Front Pharmacol 2022; 13:981578. [PMID: 36188562 PMCID: PMC9522319 DOI: 10.3389/fphar.2022.981578] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2022] [Accepted: 08/29/2022] [Indexed: 11/13/2022] Open
Abstract
Sepsis is a heterogenous and highly complex clinical syndrome, which is caused by infectious or noninfectious factors. Acute kidney injury (AKI) is one of the most common and severe complication of sepsis, and it is associated with high mortality and poor outcomes. Recent evidence has identified that autophagy participates in the pathophysiology of sepsis-associated AKI. Despite the use of antibiotics, the mortality rate is still at an extremely high level in patients with sepsis. Besides traditional treatments, many natural products, including phytochemicals and their derivatives, are proved to exert protective effects through multiple mechanisms, such as regulation of autophagy, inhibition of inflammation, fibrosis, and apoptosis, etc. Accumulating evidence has also shown that many pharmacological inhibitors might have potential therapeutic effects in sepsis-induced AKI. Hence, understanding the pathophysiology of sepsis-induced AKI may help to develop novel therapeutics to attenuate the complications of sepsis and lower the mortality rate. This review updates the recent progress of underlying pathophysiological mechanisms of sepsis-associated AKI, focuses specifically on autophagy, and summarizes the potential therapeutic effects of phytochemicals and pharmacological inhibitors.
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13
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Li Z, Yu Y, Liu C, Chen G, Gong W, Luo J, Yue Z. Identification of the key ferroptosis-related genes involved in sepsis progression and experimental validation in vivo. Front Pharmacol 2022; 13:940261. [PMID: 36188533 PMCID: PMC9524243 DOI: 10.3389/fphar.2022.940261] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2022] [Accepted: 07/12/2022] [Indexed: 11/18/2022] Open
Abstract
Background: Ferroptosis has a vital role in sepsis, but the mechanism is not known. Understanding the mechanism of ferroptosis during sepsis will aid in developing improved therapeutic strategies. Methods: We used the Gene Expression Omnibus database and FerrDb database to obtain ferroptosis-related differentially expressed genes (DEGs) between sepsis patients and healthy volunteers (HVs). Analyses of PPI networks, functional enrichment, as well as use of the MCODE algorithm were used to identify key ferroptosis-related DEGs. Expression of key ferroptosis-related DEGs was verified using: GSE57065 and GSE65682 datasets; rats in which ferroptosis was induced with erastin; sepsis-induced acute lung injury (siALI) rats. The effects of acupoint catgut embedding (ACE) on ferroptosis and expression of key ferroptosis-related DEGs in the lungs of siALI rats were also observed. A Cox proportional hazard model was used to verify the effect of key ferroptosis-related DEGs on the survival of sepsis patients. Cytoscape was used to construct ceRNA networks and gene–transcription factor networks. Results: Between sepsis patients and HVs, we identified 33 ferroptosis-related DEGs. According to analyses of PPI networks and the MCODE algorithm, we obtained four modules, of which the most significant module contained nine ferroptosis-related DEGs. Functional-enrichment analyses showed that four of the nine DEGs were enriched in the MAPK signaling pathway: MAPK14, VEGFA, TGFBR1, and DUSP1. We verified expression of these four genes in GSE57065 and GSE65682 datasets and ferroptosis rats. In addition, expression of these four genes and that of the oxidative-stress indicators GSSG and MDA was upregulated, and glutathione peroxidase-4 (GPX4) expression was downregulated, in siALI rats, but ACE reversed these changes. The Cox proportional hazard model showed that survival of sepsis patients in the high-risk group was shorter than that in the low-risk group. We found that the XIST−hsa-let-7b-5p−TGFBR1/DUSP1 ceRNA network and transcription factor E2F1 may be important regulators of these four DEGs. Conclusion: Our results suggest that MAPK14, VEGFA, TGFBR1, and DUSP1 may be key regulatory targets of ferroptosis in sepsis, and that ACE pretreatment may be antioxidant treatment for sepsis and alleviate ferroptosis. These findings provide a basis for further ferroptosis-related study in sepsis and provide new targets for its treatment.
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Affiliation(s)
- Zhixi Li
- Heilongjiang Province Key Laboratory of Research on Anesthesiology and Critical Care Medicine, Harbin, China
- The Key Laboratory of Myocardial Ischemia Organization, Chinese Ministry of Education, Harbin, China
- Department of Anesthesiology, The Second Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Yongjing Yu
- Heilongjiang Province Key Laboratory of Research on Anesthesiology and Critical Care Medicine, Harbin, China
- Department of Anesthesiology, The Second Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Chang Liu
- Heilongjiang Province Key Laboratory of Research on Anesthesiology and Critical Care Medicine, Harbin, China
- The Key Laboratory of Myocardial Ischemia Organization, Chinese Ministry of Education, Harbin, China
- Department of Anesthesiology, The Second Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Guangmin Chen
- Department of Anesthesiology, The First Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Weidong Gong
- Heilongjiang Province Key Laboratory of Research on Anesthesiology and Critical Care Medicine, Harbin, China
- Department of Anesthesiology, The Second Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Juan Luo
- Heilongjiang Province Key Laboratory of Research on Anesthesiology and Critical Care Medicine, Harbin, China
- Department of Anesthesiology, The Second Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Ziyong Yue
- Heilongjiang Province Key Laboratory of Research on Anesthesiology and Critical Care Medicine, Harbin, China
- Department of Anesthesiology, The Second Affiliated Hospital of Harbin Medical University, Harbin, China
- *Correspondence: Ziyong Yue,
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14
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Zhang X, He D, Jia J, Liang F, Mei J, Li W, Liu T, Wang Z, Liu Y, Zhang F, Zhang Z, Luo B. Erythropoietin mediates re-programming of endotoxin-tolerant macrophages through PI3K/AKT signaling and protects mice against secondary infection. Front Immunol 2022; 13:938944. [PMID: 36016936 PMCID: PMC9396350 DOI: 10.3389/fimmu.2022.938944] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2022] [Accepted: 07/12/2022] [Indexed: 11/21/2022] Open
Abstract
Initial lipopolysaccharide (LPS) exposure leads to a hypo-responsive state by macrophages to a secondary stimulation of LPS, known as endotoxin tolerance. However, recent findings show that functions of endotoxin-tolerant macrophages are not completely suppressed, whereas they undergo a functional re-programming process with upregulation of a panel of molecules leading to enhanced protective functions including antimicrobial and tissue-remodeling activities. However, the underlying molecular mechanisms are still elusive. Erythropoietin (EPO), a glycoprotein regulated by hypoxia-inducible factor 1α (HIF-1α), exerts anti-inflammatory and tissue-protective activities. Nevertheless, the potential effects of EPO on functional re-programming of endotoxin-tolerant macrophages have not been investigated yet. Here, we found that initial LPS exposure led to upregulation of HIF-1α/EPO in macrophages and that EPO enhanced tolerance in tolerized macrophages and mice as demonstrated by suppressed proinflammatory genes such as Il1b, Il6, and Tnfa after secondary LPS stimulation. Moreover, we showed that EPO improved host protective genes in endotoxin-tolerant macrophages and mice, such as the anti-bacterial genes coding for cathelicidin-related antimicrobial peptide (Cnlp) and macrophage receptor with collagenous structure (Marco), and the tissue-repairing gene vascular endothelial growth factor C (Vegfc). Therefore, our findings indicate that EPO mediates the functional re-programming of endotoxin-tolerant macrophages. Mechanistically, we found that PI3K/AKT signaling contributed to EPO-mediated re-programming through upregulation of Irak3 and Wdr5 expression. Specifically, IL-1 receptor-associated kinase 3 (IRAK3) was responsible for inhibiting proinflammatory genes Il1b, Il6, and Tnfa in tolerized macrophages after LPS rechallenge, whereas WDR5 contributed to the upregulation of host beneficial genes including Cnlp, Marco, and Vegfc. In a septic model of mice, EPO pretreatment significantly promoted endotoxin-tolerant re-programming, alleviated lung injury, enhanced bacterial clearance, and decreased mortality in LPS-tolerized mice after secondary infection of Escherichia coli. Collectively, our results reveal a novel role for EPO in mediating functional re-programming of endotoxin-tolerant macrophages; thus, targeting EPO appears to be a new therapeutic option in sepsis and other inflammatory disorders.
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Affiliation(s)
- Xue Zhang
- Research Center of Integrative Medicine, School of Basic Medical Sciences, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Dan He
- Medical College, Chongqing University, Chongqing, China
| | - Jialin Jia
- Medical College, Chongqing University, Chongqing, China
| | - Feihong Liang
- Department of Medical Science, Shunde Polytechnic, Foshan, China
| | - Jie Mei
- Research Center of Integrative Medicine, School of Basic Medical Sciences, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Wenhua Li
- Research Center of Integrative Medicine, School of Basic Medical Sciences, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Tingting Liu
- Institute of Immunology, Army Medical University, Chongqing, China
| | - Zhiyu Wang
- Institute of Immunology, Army Medical University, Chongqing, China
| | - Yu Liu
- Institute of Immunology, Army Medical University, Chongqing, China
| | - Fengxue Zhang
- Research Center of Integrative Medicine, School of Basic Medical Sciences, Guangzhou University of Chinese Medicine, Guangzhou, China
- *Correspondence: Bangwei Luo, ; Zhiren Zhang, ; Fengxue Zhang,
| | - Zhiren Zhang
- Institute of Immunology, Army Medical University, Chongqing, China
- *Correspondence: Bangwei Luo, ; Zhiren Zhang, ; Fengxue Zhang,
| | - Bangwei Luo
- Institute of Immunology, Army Medical University, Chongqing, China
- *Correspondence: Bangwei Luo, ; Zhiren Zhang, ; Fengxue Zhang,
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15
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Li J, Zhou H, Wei B, Che D, Xu Y, Pi L, Fu L, Hong J, Gu X. The rs8506 TT Genotype in lincRNA-NR_024015 Contributes to the Risk of Sepsis in a Southern Chinese Child Population. Front Public Health 2022; 10:927527. [PMID: 35910890 PMCID: PMC9326103 DOI: 10.3389/fpubh.2022.927527] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2022] [Accepted: 06/16/2022] [Indexed: 11/13/2022] Open
Abstract
Background Sepsis is a highly life-threatening heterogeneous syndrome and a global health burden. Studies have shown that many genetic variants could influence the risk of sepsis. Long non-coding RNA lincRNA-NR_024015 may participate in functional alteration of endothelial cell via vascular endothelial growth factor (VEGF) signaling, whereas its relevance between the lincRNA-NR_024015 polymorphism and sepsis susceptibility is still unclear. Methods 474 sepsis patients and 678 healthy controls were enrolled from a southern Chinese child population in the present study. The polymorphism of rs8506 in lincRNA-NR_024015 was determined using Taqman methodology. Results Overall, a significant association was found between rs8506 polymorphism and the risk of sepsis disease (TT vs. CC/CT: adjusted OR = 1.751, 95%CI = 1.024–2.993, P = 0.0406). In the stratified analysis, the results suggested that the carriers of TT genotypes had a significantly increased sepsis risk among the children aged 12–60 months, females, early-stage sepsis and survivors (TT vs. CC/CT: ORage = 2.413; ORfemale = 2.868; ORsepsis = 2.533; ORsurvivor = 1.822; adjusted for age and gender, P < 0.05, respectively). Conclusion Our study indicated that lincRNA-NR_024015 rs8506 TT genotype might contribute to the risk of sepsis in a southern Chinese child population. Future research is required to elucidate the possible immunoregulatory mechanisms of this association and advance the development of novel biomarkers in sepsis.
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Affiliation(s)
- Jinqing Li
- Department of Clinical Biological Resource Bank, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou, China
| | - Huazhong Zhou
- Department of Clinical Biological Resource Bank, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou, China
| | - Bing Wei
- Department of Blood Transfusion, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou, China
| | - Di Che
- Department of Clinical Biological Resource Bank, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou, China
| | - Yufen Xu
- Department of Clinical Biological Resource Bank, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou, China
| | - Lei Pi
- Department of Clinical Biological Resource Bank, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou, China
| | - Lanyan Fu
- Department of Clinical Biological Resource Bank, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou, China
| | - Jie Hong
- Pediatric Intensive Care Unit, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou, China
- Jie Hong
| | - Xiaoqiong Gu
- Department of Clinical Biological Resource Bank, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou, China
- *Correspondence: Xiaoqiong Gu
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16
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Luxen M, van Meurs M, Molema G. Unlocking the Untapped Potential of Endothelial Kinase and Phosphatase Involvement in Sepsis for Drug Treatment Design. Front Immunol 2022; 13:867625. [PMID: 35634305 PMCID: PMC9136877 DOI: 10.3389/fimmu.2022.867625] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2022] [Accepted: 03/28/2022] [Indexed: 11/29/2022] Open
Abstract
Sepsis is a devastating clinical condition that can lead to multiple organ failure and death. Despite advancements in our understanding of molecular mechanisms underlying sepsis and sepsis-associated multiple organ failure, no effective therapeutic treatment to directly counteract it has yet been established. The endothelium is considered to play an important role in sepsis. This review highlights a number of signal transduction pathways involved in endothelial inflammatory activation and dysregulated endothelial barrier function in response to sepsis conditions. Within these pathways – NF-κB, Rac1/RhoA GTPases, AP-1, APC/S1P, Angpt/Tie2, and VEGF/VEGFR2 – we focus on the role of kinases and phosphatases as potential druggable targets for therapeutic intervention. Animal studies and clinical trials that have been conducted for this purpose are discussed, highlighting reasons why they might not have resulted in the expected outcomes, and which lessons can be learned from this. Lastly, opportunities and challenges that sepsis and sepsis-associated multiple organ failure research are currently facing are presented, including recommendations on improved experimental design to increase the translational power of preclinical research to the clinic.
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Affiliation(s)
- Matthijs Luxen
- Department of Pathology and Medical Biology, Medical Biology Section, University Medical Center Groningen, University of Groningen, Groningen, Netherlands
- Department of Critical Care, University Medical Center Groningen, University of Groningen, Groningen, Netherlands
- *Correspondence: Matthijs Luxen,
| | - Matijs van Meurs
- Department of Pathology and Medical Biology, Medical Biology Section, University Medical Center Groningen, University of Groningen, Groningen, Netherlands
- Department of Critical Care, University Medical Center Groningen, University of Groningen, Groningen, Netherlands
| | - Grietje Molema
- Department of Pathology and Medical Biology, Medical Biology Section, University Medical Center Groningen, University of Groningen, Groningen, Netherlands
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17
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Gargani S, Lourou N, Arapatzi C, Tzanos D, Saridaki M, Dushku E, Chatzimike M, Sidiropoulos ND, Andreadou M, Ntafis V, Hatzis P, Kostourou V, Kontoyiannis DL. Inactivation of AUF1 in Myeloid Cells Protects From Allergic Airway and Tumor Infiltration and Impairs the Adenosine-Induced Polarization of Pro-Angiogenic Macrophages. Front Immunol 2022; 13:752215. [PMID: 35222366 PMCID: PMC8873154 DOI: 10.3389/fimmu.2022.752215] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2021] [Accepted: 01/21/2022] [Indexed: 11/13/2022] Open
Abstract
The four isoforms of the RNA-binding protein hnRNPD/AUF1 have been proposed to limit the use of inflammatory mRNAs in innate immune cells. Mice engineered to lack AUF1s in all tissues are sensitive to acute inflammatory assaults; however, they also manifest complex degenerations obscuring assessment of AUF1s’ roles in innate immune cells. Here, we restricted a debilitating AUF1 mutation to the mouse myeloid lineage and performed disease-oriented phenotypic analyses to assess the requirement of AUF1s in variable contexts of innate immune reactivity. Contrary to the whole-body mutants, the myeloid mutants of AUF1s did not show differences in their susceptibility to cytokine storms occurring during endotoxemia; neither in type-I cell-mediated reactions driving intestinal inflammation by chemical irritants. Instead, they were resistant to allergic airway inflammation and displayed reductions in inflammatory infiltrates and an altered T-helper balance. The ex-vivo analysis of macrophages revealed that the loss of AUF1s had a minimal effect on their proinflammatory gene expression. Moreover, AUF1s were dispensable for the classical polarization of cultured macrophages by LPS & IFNγ correlating with the unchanged response of mutant mice to systemic and intestinal inflammation. Notably, AUF1s were also dispensable for the alternative polarization of macrophages by IL4, TGFβ and IL10, known to be engaged in allergic reactions. In contrast, they were required to switch proinflammatory macrophages towards a pro-angiogenic phenotype induced by adenosine receptor signals. Congruent to this, the myeloid mutants of AUF1 displayed lower levels of vascular remodeling factors in exudates from allergen exposed lungs; were unable to support the growth and inflammatory infiltration of transplanted melanoma tumors; and failed to vascularize inert grafts unless supplemented with angiogenic factors. Mechanistically, adenosine receptor signals enhanced the association of AUF1s with the Vegfa, Il12b, and Tnf mRNAs to differentially regulate and facilitate the pro-angiogenic switch. Our data collectively demonstrates that AUF1s do not act as general anti-inflammatory factors in innate immune cells but have more specialized roles in regulons allowing specific innate immune cell transitions to support tissue infiltration and remodeling processes.
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Affiliation(s)
- Sofia Gargani
- Biomedical Sciences Research Centre “Alexander Fleming”, Institute of Fundamental Biomedical Research, Vari, Greece
- Department of Genetics, Development and Molecular Biology, School of Biology, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Niki Lourou
- Biomedical Sciences Research Centre “Alexander Fleming”, Institute of Fundamental Biomedical Research, Vari, Greece
- Department of Genetics, Development and Molecular Biology, School of Biology, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Christina Arapatzi
- Biomedical Sciences Research Centre “Alexander Fleming”, Institute of Fundamental Biomedical Research, Vari, Greece
| | - Dimitris Tzanos
- Biomedical Sciences Research Centre “Alexander Fleming”, Institute of Fundamental Biomedical Research, Vari, Greece
| | - Marania Saridaki
- Biomedical Sciences Research Centre “Alexander Fleming”, Institute of Fundamental Biomedical Research, Vari, Greece
| | - Esmeralda Dushku
- Department of Genetics, Development and Molecular Biology, School of Biology, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Margarita Chatzimike
- Biomedical Sciences Research Centre “Alexander Fleming”, Institute of Fundamental Biomedical Research, Vari, Greece
| | - Nikolaos D. Sidiropoulos
- Department of Genetics, Development and Molecular Biology, School of Biology, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Margarita Andreadou
- Biomedical Sciences Research Centre “Alexander Fleming”, Institute of Fundamental Biomedical Research, Vari, Greece
| | - Vasileios Ntafis
- Biomedical Sciences Research Centre “Alexander Fleming”, Institute of Fundamental Biomedical Research, Vari, Greece
| | - Pantelis Hatzis
- Biomedical Sciences Research Centre “Alexander Fleming”, Institute of Fundamental Biomedical Research, Vari, Greece
| | - Vassiliki Kostourou
- Biomedical Sciences Research Centre “Alexander Fleming”, Institute of Fundamental Biomedical Research, Vari, Greece
| | - Dimitris L. Kontoyiannis
- Biomedical Sciences Research Centre “Alexander Fleming”, Institute of Fundamental Biomedical Research, Vari, Greece
- Department of Genetics, Development and Molecular Biology, School of Biology, Aristotle University of Thessaloniki, Thessaloniki, Greece
- *Correspondence: Dimitris L. Kontoyiannis, ;
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18
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Molema G, Zijlstra JG, van Meurs M, Kamps JAAM. Renal microvascular endothelial cell responses in sepsis-induced acute kidney injury. Nat Rev Nephrol 2022; 18:95-112. [PMID: 34667283 DOI: 10.1038/s41581-021-00489-1] [Citation(s) in RCA: 48] [Impact Index Per Article: 24.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/10/2021] [Indexed: 12/29/2022]
Abstract
Microvascular endothelial cells in the kidney have been a neglected cell type in sepsis-induced acute kidney injury (sepsis-AKI) research; yet, they offer tremendous potential as pharmacological targets. As endothelial cells in distinct cortical microvascular segments are highly heterogeneous, this Review focuses on endothelial cells in their anatomical niche. In animal models of sepsis-AKI, reduced glomerular blood flow has been attributed to inhibition of endothelial nitric oxide synthase activation in arterioles and glomeruli, whereas decreased cortex peritubular capillary perfusion is associated with epithelial redox stress. Elevated systemic levels of vascular endothelial growth factor, reduced levels of circulating sphingosine 1-phosphate and loss of components of the glycocalyx from glomerular endothelial cells lead to increased microvascular permeability. Although coagulation disbalance occurs in all microvascular segments, the molecules involved differ between segments. Induction of the expression of adhesion molecules and leukocyte recruitment also occurs in a heterogeneous manner. Evidence of similar endothelial cell responses has been found in kidney and blood samples from patients with sepsis. Comprehensive studies are needed to investigate the relationships between segment-specific changes in the microvasculature and kidney function loss in sepsis-AKI. The application of omics technologies to kidney tissues from animals and patients will be key in identifying these relationships and in developing novel therapeutics for sepsis.
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Affiliation(s)
- Grietje Molema
- Dept. Pathology and Medical Biology, Medical Biology section, University Medical Center Groningen, University of Groningen, Groningen, Netherlands.
| | - Jan G Zijlstra
- Dept. Critical Care, University Medical Center Groningen, University of Groningen, Groningen, Netherlands
| | - Matijs van Meurs
- Dept. Pathology and Medical Biology, Medical Biology section, University Medical Center Groningen, University of Groningen, Groningen, Netherlands.,Dept. Critical Care, University Medical Center Groningen, University of Groningen, Groningen, Netherlands
| | - Jan A A M Kamps
- Dept. Pathology and Medical Biology, Medical Biology section, University Medical Center Groningen, University of Groningen, Groningen, Netherlands
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19
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Lan J, Zhang H, Zhao H, Liu L, Shi Q, Li D, Ju X. Cord Blood Natural Killer Cells Inhibit Sepsis Caused by Feces-Induced Acute Peritonitis via Increasing Endothelium Integrity. Cell Transplant 2022; 31:9636897221090257. [PMID: 35438589 PMCID: PMC9021520 DOI: 10.1177/09636897221090257] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
Abstract
Sepsis is associated with acute peritonitis, which can be induced by lipopolysaccharide exposure and feces. Generally, lipopolysaccharide induces mono-microbial peritonitis, whereas feces cause poly-microbial peritonitis; the latter is a more complicated and closer to the clinical diseases. Although several reports have discussed the mechanism of immune response in peritonitis-induced sepsis, however, the role of natural killer (NK) cells in sepsis, especially the relationship between NK cells and stabilization of the vascular endothelial barrier, is still unclear. Accordingly, in this study, we assessed the roles of NK cells in an acute sepsis model in mice. NK cells were injected via the tail vein into mice with acute sepsis, and nitric oxide (NO), anti-inflammatory cytokine, and angiogenic factors were tested to explore the effects of NK cells on sepsis. The survival rate of septic model mice infused with NK cells was significantly improved compared with the control group. Interestingly, the levels of NO, interleukin-10, and vascular endothelial growth factor (VEGF) decreased in NK cells therapy group. After the injection of NK cells, CD31 positive endothelial cells significantly increased in the kidneys and liver, although the expression of VEGF, ANGPT-1, and ET-1 was downregulated. Consistent with our hypothesis, the transfusion of NK cells into mice with sepsis blocked inflammation and increased endothelium integrity. Overall, these findings suggest that NK cells may block sepsis by modulating the VEGF pathway.
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Affiliation(s)
- Jing Lan
- Department of Pediatrics, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - Hong Zhang
- Department of Pediatrics, Qilu Hospital of Shandong University, Jinan, China
| | - Hui Zhao
- Key Laboratory for Regenerative Medicine, Ministry of Education, School of Biomedical Sciences, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong SAR, China
| | - Linghong Liu
- Department of Pediatrics, Qilu Hospital of Shandong University, Jinan, China.,Stem Cell and Regenerative Medicine Research Center, Qilu Hospital of Shandong University, Jinan, China
| | - Qing Shi
- Department of Pediatrics, Qilu Hospital of Shandong University, Jinan, China.,Stem Cell and Regenerative Medicine Research Center, Qilu Hospital of Shandong University, Jinan, China
| | - Dong Li
- Department of Pediatrics, Qilu Hospital of Shandong University, Jinan, China.,Stem Cell and Regenerative Medicine Research Center, Qilu Hospital of Shandong University, Jinan, China
| | - Xiuli Ju
- Department of Pediatrics, Qilu Hospital of Shandong University, Jinan, China.,Stem Cell and Regenerative Medicine Research Center, Qilu Hospital of Shandong University, Jinan, China
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20
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Vandewalle J, Timmermans S, Paakinaho V, Vancraeynest L, Dewyse L, Vanderhaeghen T, Wallaeys C, Van Wyngene L, Van Looveren K, Nuyttens L, Eggermont M, Dewaele S, Velho TR, Moita LF, Weis S, Sponholz C, van Grunsven LA, Dewerchin M, Carmeliet P, De Bosscher K, Van de Voorde J, Palvimo JJ, Libert C. Combined glucocorticoid resistance and hyperlactatemia contributes to lethal shock in sepsis. Cell Metab 2021; 33:1763-1776.e5. [PMID: 34302744 DOI: 10.1016/j.cmet.2021.07.002] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/24/2020] [Revised: 05/05/2021] [Accepted: 07/01/2021] [Indexed: 12/18/2022]
Abstract
Sepsis is a potentially lethal syndrome resulting from a maladaptive response to infection. Upon infection, glucocorticoids are produced as a part of the compensatory response to tolerate sepsis. This tolerance is, however, mitigated in sepsis due to a quickly induced glucocorticoid resistance at the level of the glucocorticoid receptor. Here, we show that defects in the glucocorticoid receptor signaling pathway aggravate sepsis pathophysiology by lowering lactate clearance and sensitizing mice to lactate-induced toxicity. The latter is exerted via an uncontrolled production of vascular endothelial growth factor, resulting in vascular leakage and collapse with severe hypotension, organ damage, and death, all being typical features of a lethal form of sepsis. In conclusion, sepsis leads to glucocorticoid receptor failure and hyperlactatemia, which collectively leads to a lethal vascular collapse.
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Affiliation(s)
- Jolien Vandewalle
- VIB Center for Inflammation Research, VIB, Ghent 9052, Belgium; Department of Biomedical Molecular Biology, Ghent University, Ghent 9052, Belgium
| | - Steven Timmermans
- VIB Center for Inflammation Research, VIB, Ghent 9052, Belgium; Department of Biomedical Molecular Biology, Ghent University, Ghent 9052, Belgium
| | - Ville Paakinaho
- Institute of Biomedicine, University of Eastern Finland, Kuopio 70210, Finland
| | - Lies Vancraeynest
- Department Basic and Applied Medical Sciences, Ghent University, Ghent 9000, Belgium
| | - Liza Dewyse
- Liver Cell Biology research group, Vrije Universiteit Brussel (VUB), Brussels 1090, Belgium
| | - Tineke Vanderhaeghen
- VIB Center for Inflammation Research, VIB, Ghent 9052, Belgium; Department of Biomedical Molecular Biology, Ghent University, Ghent 9052, Belgium
| | - Charlotte Wallaeys
- VIB Center for Inflammation Research, VIB, Ghent 9052, Belgium; Department of Biomedical Molecular Biology, Ghent University, Ghent 9052, Belgium
| | - Lise Van Wyngene
- VIB Center for Inflammation Research, VIB, Ghent 9052, Belgium; Department of Biomedical Molecular Biology, Ghent University, Ghent 9052, Belgium
| | - Kelly Van Looveren
- VIB Center for Inflammation Research, VIB, Ghent 9052, Belgium; Department of Biomedical Molecular Biology, Ghent University, Ghent 9052, Belgium
| | - Louise Nuyttens
- VIB Center for Inflammation Research, VIB, Ghent 9052, Belgium; Department of Biomedical Molecular Biology, Ghent University, Ghent 9052, Belgium
| | - Melanie Eggermont
- VIB Center for Inflammation Research, VIB, Ghent 9052, Belgium; Department of Biomedical Molecular Biology, Ghent University, Ghent 9052, Belgium
| | - Sylviane Dewaele
- VIB Center for Inflammation Research, VIB, Ghent 9052, Belgium; Department of Biomedical Molecular Biology, Ghent University, Ghent 9052, Belgium
| | - Tiago R Velho
- Instituto Gulbenkian de Ciência, Oeiras 2780-156, Portugal
| | - Luis F Moita
- Instituto Gulbenkian de Ciência, Oeiras 2780-156, Portugal
| | - Sebastian Weis
- Department of Anesthesiology and Intensive Care Medicine, Jena University Hospital, Friedrich-Schiller University, Jena 07743, Germany; Institute for Infectious Diseases and Infection Control, Jena University Hospital, Department of Anesthesiology and Intensive Care Medicine, Jena University Hospital and Center for Sepsis Control and Care, Jena University Hospital, Jena 07749, Germany
| | - Christoph Sponholz
- Department of Anesthesiology and Intensive Care Medicine, Jena University Hospital, Friedrich-Schiller University, Jena 07743, Germany
| | - Leo A van Grunsven
- Liver Cell Biology research group, Vrije Universiteit Brussel (VUB), Brussels 1090, Belgium
| | - Mieke Dewerchin
- Laboratory of Angiogenesis and Vascular Metabolism, Department of Oncology and Leuven Cancer Institute (LKI), KU Leuven, VIB Center for Cancer Biology, VIB, Leuven 3000, Belgium
| | - Peter Carmeliet
- Laboratory of Angiogenesis and Vascular Metabolism, Department of Oncology and Leuven Cancer Institute (LKI), KU Leuven, VIB Center for Cancer Biology, VIB, Leuven 3000, Belgium; Laboratory of Angiogenesis and Vascular Heterogeneity, Department of Biomedicine, Aarhus University, Aarhus 8000, Denmark; State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-Sen University, Guangzhou, Guangdong, P.R. China
| | - Karolien De Bosscher
- Translational Nuclear Receptor Research lab, VIB Center for Medical Biotechnology, VIB, Ghent 9052, Belgium; Department of Biomolecular Medicine, Ghent University, Ghent 9052, Belgium
| | - Johan Van de Voorde
- Department Basic and Applied Medical Sciences, Ghent University, Ghent 9000, Belgium
| | - Jorma J Palvimo
- Institute of Biomedicine, University of Eastern Finland, Kuopio 70210, Finland
| | - Claude Libert
- VIB Center for Inflammation Research, VIB, Ghent 9052, Belgium; Department of Biomedical Molecular Biology, Ghent University, Ghent 9052, Belgium.
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21
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Refractory severe idiopathic systemic capillary leak syndrome successfully treated with bevacizumab: a case report. Angiogenesis 2021; 24:399-401. [PMID: 33550460 DOI: 10.1007/s10456-021-09769-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2020] [Accepted: 01/16/2021] [Indexed: 10/22/2022]
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22
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Barabutis N, Marinova M, Solopov P, Uddin MA, Croston GE, Reinheimer TM, Catravas JD. Protective Mechanism of the Selective Vasopressin V 1A Receptor Agonist Selepressin against Endothelial Barrier Dysfunction. J Pharmacol Exp Ther 2020; 375:286-295. [PMID: 32943478 DOI: 10.1124/jpet.120.000146] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2020] [Accepted: 08/17/2020] [Indexed: 12/16/2022] Open
Abstract
Sepsis and septic shock are among the most common causes of death in the intensive care unit; advanced therapeutic approaches are thus urgently needed. Vascular hyperpermeability represents a major manifestation of severe sepsis and is responsible for the ensuing organ dysfunction and failure. Vasopressin V1A receptor (V1AR) agonists have shown promise in the treatment of sepsis, increasing blood pressure, and reducing vascular hyperpermeability. The effects of the selective V1AR-selective agonist selepressin have been investigated in an in vitro model of thrombin-, vascular endothelial growth factor-, angiopoietin 2-, and lipopolysaccharide (LPS)-induced pulmonary microvascular endothelial hyperpermeability. Results suggest that selepressin counteracts the effects of all four endothelial barrier disruptors in a concentration-dependent manner, as reflected in real-time measurements of vascular permeability by means of transendothelial electrical resistance. Further, selepressin protected the barrier integrity against the LPS-mediated corruption of the endothelial monolayer integrity, as captured by VE-cadherin and actin staining. The protective effects of selepressin were abolished by silencing of the vasopressin V1AR, as well as by atosiban, an antagonist of the human V1AR. p53 appears to be involved in mediating these palliative effects, since selepressin strongly induced its expression levels, suppressed the inflammatory RhoA/myosin light chain2 pathway, and triggered the barrier-protective effects of the GTPase Rac1. We conclude that V1AR-selective agonists, such as selepressin, may prove useful in the improvement of endothelial barrier function in the management of severe sepsis. SIGNIFICANCE STATEMENT: A cardinal sign of sepsis, a serious disease with significant mortality and no specific treatment, is pulmonary endothelial barrier dysfunction that leads to pulmonary edema. Here, we present evidence that in cultured human lung microvascular endothelial cells, the synthetic, selective vasopressin V1A receptor agonist selepressin protects against endothelial barrier dysfunction caused by four different edemogenic agents, suggesting a potential role of selepressin in the clinical management of sepsis.
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Affiliation(s)
- Nektarios Barabutis
- Frank Reidy Research Center for Bioelectrics (N.B., M.M., P.S., J.D.C.) and School of Medical Diagnostic and Translational Sciences, College of Health Sciences (J.D.C.), Old Dominion University, Norfolk, Virginia; School of Basic Pharmaceutical and Toxicological Sciences, College of Pharmacy, University of Louisiana Monroe, Monroe, Louisiana (N.B., M.A.U.); Croston Consulting, San Diego, California (G.E.C.); and Ferring Pharmaceuticals A/S, Copenhagen, Denmark (T.M.R.)
| | - Margarita Marinova
- Frank Reidy Research Center for Bioelectrics (N.B., M.M., P.S., J.D.C.) and School of Medical Diagnostic and Translational Sciences, College of Health Sciences (J.D.C.), Old Dominion University, Norfolk, Virginia; School of Basic Pharmaceutical and Toxicological Sciences, College of Pharmacy, University of Louisiana Monroe, Monroe, Louisiana (N.B., M.A.U.); Croston Consulting, San Diego, California (G.E.C.); and Ferring Pharmaceuticals A/S, Copenhagen, Denmark (T.M.R.)
| | - Pavel Solopov
- Frank Reidy Research Center for Bioelectrics (N.B., M.M., P.S., J.D.C.) and School of Medical Diagnostic and Translational Sciences, College of Health Sciences (J.D.C.), Old Dominion University, Norfolk, Virginia; School of Basic Pharmaceutical and Toxicological Sciences, College of Pharmacy, University of Louisiana Monroe, Monroe, Louisiana (N.B., M.A.U.); Croston Consulting, San Diego, California (G.E.C.); and Ferring Pharmaceuticals A/S, Copenhagen, Denmark (T.M.R.)
| | - Mohammad A Uddin
- Frank Reidy Research Center for Bioelectrics (N.B., M.M., P.S., J.D.C.) and School of Medical Diagnostic and Translational Sciences, College of Health Sciences (J.D.C.), Old Dominion University, Norfolk, Virginia; School of Basic Pharmaceutical and Toxicological Sciences, College of Pharmacy, University of Louisiana Monroe, Monroe, Louisiana (N.B., M.A.U.); Croston Consulting, San Diego, California (G.E.C.); and Ferring Pharmaceuticals A/S, Copenhagen, Denmark (T.M.R.)
| | - Glenn E Croston
- Frank Reidy Research Center for Bioelectrics (N.B., M.M., P.S., J.D.C.) and School of Medical Diagnostic and Translational Sciences, College of Health Sciences (J.D.C.), Old Dominion University, Norfolk, Virginia; School of Basic Pharmaceutical and Toxicological Sciences, College of Pharmacy, University of Louisiana Monroe, Monroe, Louisiana (N.B., M.A.U.); Croston Consulting, San Diego, California (G.E.C.); and Ferring Pharmaceuticals A/S, Copenhagen, Denmark (T.M.R.)
| | - Torsten M Reinheimer
- Frank Reidy Research Center for Bioelectrics (N.B., M.M., P.S., J.D.C.) and School of Medical Diagnostic and Translational Sciences, College of Health Sciences (J.D.C.), Old Dominion University, Norfolk, Virginia; School of Basic Pharmaceutical and Toxicological Sciences, College of Pharmacy, University of Louisiana Monroe, Monroe, Louisiana (N.B., M.A.U.); Croston Consulting, San Diego, California (G.E.C.); and Ferring Pharmaceuticals A/S, Copenhagen, Denmark (T.M.R.)
| | - John D Catravas
- Frank Reidy Research Center for Bioelectrics (N.B., M.M., P.S., J.D.C.) and School of Medical Diagnostic and Translational Sciences, College of Health Sciences (J.D.C.), Old Dominion University, Norfolk, Virginia; School of Basic Pharmaceutical and Toxicological Sciences, College of Pharmacy, University of Louisiana Monroe, Monroe, Louisiana (N.B., M.A.U.); Croston Consulting, San Diego, California (G.E.C.); and Ferring Pharmaceuticals A/S, Copenhagen, Denmark (T.M.R.)
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23
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Hoang T, Anh TTT. Treatment Options for Severe Acute Respiratory Syndrome, Middle East Respiratory Syndrome, and Coronavirus Disease 2019: a Review of Clinical Evidence. Infect Chemother 2020; 52:317-334. [PMID: 32869558 PMCID: PMC7533202 DOI: 10.3947/ic.2020.52.3.317] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2020] [Accepted: 06/15/2020] [Indexed: 01/08/2023] Open
Abstract
Coronaviruses have caused serious Severe Acute Respiratory Syndrome (SARS), Middle East Respiratory Syndrome (MERS), and Coronavirus Disease 2019 (COVID-19) outbreaks, and only remdesivir has been recently indicated for the treatment of COVID-19. In the line of therapeutic options for SARS and MERS, this study aims to summarize the current clinical evidence of treatment options for COVID-19. In general, the combination of antibiotics, ribavirin, and corticosteroids was considered as a standard treatment for patients with SARS. The addition of this conventional treatment with lopinavir/ritonavir, interferon, and convalescent plasma showed potential clinical improvement. For patients with MERS, ribavirin, lopinavir/ritonavir, interferon, and convalescent plasma were continuously recommended. However, a high-dose of corticosteroid was suggested for severe cases only. The use of lopinavir/ritonavir and convalescent plasma was commonly reported. There was limited evidence for the effect of corticosteroids, other antiviral drugs like ribavirin, and favipiravir. Monoclonal antibody of tocilizumab and antimalarial agents of chloroquine and hydroxychloroquine were also introduced. Among antibiotics for infection therapy, azithromycin was suggested. In conclusion, this study showed the up-to-date evidence of treatment options for COVID-19 that is helpful for the therapy selection and the development of further guidelines and recommendations. Updates of on-going clinical trials and observational studies may confirm the current findings.
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Affiliation(s)
- Tung Hoang
- Department of Cancer Biomedical Science, National Cancer Center Graduate School of Cancer Science and Policy, Goyang, Korea
| | - Tho Tran Thi Anh
- Department of Gastroenterology and Hepatology, Nghe An Oncology Hospital, Nghe An, Vietnam.
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24
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Ai J, Ma J, Chen ZQ, Sun JH, Yao K. An Endostatin-lentivirus (ES-LV)-EPC gene therapy agent for suppression of neovascularization in oxygen-induced retinopathy rat model. BMC Mol Cell Biol 2020; 21:57. [PMID: 32727534 PMCID: PMC7392664 DOI: 10.1186/s12860-020-00301-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2019] [Accepted: 07/16/2020] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Transplantation of gene transfected endothelial progenitor cells (EPCs) has provided novel methods for tumor neovascularization therapy but not for ocular disease therapy. This study aimed to investigate the efficacy of endostatin transfected EPCs in retinal neovascularization therapy. RESULTS Quantitative reverse transcription-polymerase chain reaction (qRT-PCR) showed the high expression of endostatin in endostatin-lentivirus-EPCs. The neovascularization leakage area and the number of preretinal neovascular cell nuclei were significantly decreased in the endostatin-lentivirus and endostatin-lentivirus-EPC groups, and the effects of these two treatments on inhibiting retinal neovascularization were almost the same. These two groups also showed the greater retinal distribution of endostatin. Intravitreal injections of endostatin-lentivirus-EPCs inhibited retinal neovascularization, vascular endothelial growth factor (VEGF) and CD31 expression, and increased endostatin expression in vivo. Endostatin-lentivirus-EPCs targeted and prevented pathologic retinal neovascularization. CONCLUSIONS Gene-combined EPCs represent a potential new therapeutic agent for the treatment of neovascular eye diseases.
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Affiliation(s)
- Jing Ai
- Eye Center, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, 310009, Zhejiang Province, China
| | - Jian Ma
- Eye Center, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, 310009, Zhejiang Province, China
| | - Zhi-Qing Chen
- Eye Center, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, 310009, Zhejiang Province, China
| | - Jun-Hui Sun
- Hepatobiliary and Pancreatic Interventional Treatment Center, Division of Hepatobiliary and Pancreatic Surgery, Key Laboratory of Combined Multi-organ Transplantation, Ministry of Public Health, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, 310003, Zhejiang Province, China.
| | - Ke Yao
- Eye Center, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, 310009, Zhejiang Province, China.
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25
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Hauschildt J, Schrimpf C, Thamm K, Retzlaff J, Idowu TO, von Kaisenberg C, Haller H, David S. Dual Pharmacological Inhibition of Angiopoietin-2 and VEGF-A in Murine Experimental Sepsis. J Vasc Res 2019; 57:34-45. [PMID: 31726451 DOI: 10.1159/000503787] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2019] [Accepted: 09/30/2019] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND Sepsis is a pathological host response to infection leading to vascular barrier breakdown due to elevated levels of angiopoietin-2 (Angpt-2) and vascular endothelial growth factor-A (VEGF-A). Here, we tested a novel heterodimeric bispecific monoclonal IgG1-cross antibody of Angpt-2 and VEGF - termed "A2V." METHODS Cecal ligation and puncture was used to induce murine polymicrobial sepsis. Organs and blood were harvested for fluorescence immunohistochemistry and RT-PCR, and survival was recorded. In vitro endothelial cells were stimulated with plasma from septic shock patients costimulated with A2V or IgG antibody followed by immunocytochemistry and real-time transendothelial electrical resistance. RESULTS Septic mice treated with A2V had a reduced induction of the endothelial adhesion molecule ICAM-1, leading to a trend towards less transmigration of inflammatory cells (A2V: 42.2 ± 1.0 vs. IgG 48.5 ± 1.7 Gr-1+ cells/HPF, p = 0.08) and reduced tissue levels of inflammatory cytokines (e.g., IL-6 mRNA: A2V 9.4 ± 3.2 vs. IgG 83.9 ± 36.7-fold over control, p = 0.03). Endothelial permeability was improved in vivo and in vitro in stimulated endothelial cells with septic plasma. Survival was improved by 38% (p = 0.02). CONCLUSION Dual inhibition of Angpt-2 and VEGF-A improves murine sepsis morbidity and mortality, making it a potential therapeutic against vascular barrier breakdown.
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Affiliation(s)
- Janine Hauschildt
- Division of Nephrology and Hypertension, Hannover Medical School, Hannover, Germany
| | - Claudia Schrimpf
- Department of Cardiothoracic, Transplant and Vascular Surgery, Hannover Medical School, Hannover, Germany
| | - Kristina Thamm
- Division of Nephrology and Hypertension, Hannover Medical School, Hannover, Germany
| | - Jennifer Retzlaff
- Division of Nephrology and Hypertension, Hannover Medical School, Hannover, Germany
| | - Temitayo O Idowu
- Division of Nephrology and Hypertension, Hannover Medical School, Hannover, Germany
| | | | - Hermann Haller
- Division of Nephrology and Hypertension, Hannover Medical School, Hannover, Germany
| | - Sascha David
- Division of Nephrology and Hypertension, Hannover Medical School, Hannover, Germany,
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26
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Effects of the Humanized Anti-Adrenomedullin Antibody Adrecizumab (HAM8101) on Vascular Barrier Function and Survival in Rodent Models of Systemic Inflammation and Sepsis. Shock 2019; 50:648-654. [PMID: 29324627 DOI: 10.1097/shk.0000000000001102] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
PURPOSE Adrenomedullin (ADM) is an important regulator of endothelial barrier function during sepsis. Administration of a murine antibody targeted against the N-terminus of ADM (HAM1101) resulted in improved outcome in models of murine sepsis. We studied the effects of a humanized form of this antibody (HAM8101, also known as Adrecizumab) on vascular barrier dysfunction and survival in rodent models of systemic inflammation and sepsis. METHODS Rats (n=48) received different dosages of HAM8101 or placebo (n = 8 per group), directly followed by administration of lipopolysaccharide (5 mg/kg). Twenty-four hours later, Evans Blue dye was administered to assess vascular leakage in kidney and liver tissue. Furthermore, mice (n = 24) were administered different dosages of HAM8101 or placebo (n = 6 per group), immediately followed by cecal ligation and puncture (CLP). Eighteen hours later, albumin, vascular endothelial growth factor (VEGF), and angiopoietin-1 were analyzed in the kidney. Finally, effects of single and repeated dose administration of HAM1101, HAM8101 and placebo on survival were assessed in CLP-induced murine sepsis (n = 60, n = 10 per group). RESULTS Dosages of 0.1 and 2.5 mg/kg HAM8101 attenuated renal albumin leakage in endotoxemic rats. Dosages of 0.1, 2.0, and 20 mg/kg HAM8101 reduced renal concentrations of albumin and the detrimental protein VEGF in septic mice, whereas concentrations of the protective protein angiopoietin-1 were augmented. Both single and repeated administration of both HAM1101 and HAM8101 resulted in improved survival during murine sepsis. CONCLUSIONS Pretreatment with the humanized anti-ADM antibody HAM8101 improved vascular barrier function and survival in rodent models of systemic inflammation and sepsis.
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27
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Abstract
Sepsis remains a major scientific and medical challenge, for which, apart from significant refinements in supportive therapy, treatment has barely changed over the last few decades. During sepsis, both vascular tone and vascular integrity are compromised, and contribute to the development of shock. The free circulating peptide adrenomedullin (ADM) is involved in the regulation of the endothelial barrier function and tone of blood vessels. Several animal studies have shown that ADM administration improves outcome of sepsis. However, in higher dosages, ADM administration may cause hypotension, limiting its clinical applicability. Moreover, ADM has a very short half-life and easily adheres to surfaces, further hampering its clinical use. The non-neutralizing anti-ADM antibody Adrecizumab (HAM8101) which causes a long-lasting increase of plasma ADM has shown promising results in animal models of systemic inflammation and sepsis; it reduced inflammation, attenuated vascular leakage, and improved hemodynamics, kidney function, and survival. Combined with an excellent safety profile derived from animal and phase I human studies, Adrecizumab represents a promising candidate drug for the adjunctive treatment of sepsis. In this review, we first provide a brief overview of the currently available data on the role of adrenomedullin in sepsis and describe its effects on endothelial barrier function and vasodilation. Furthermore, we provide a novel hypothesis concerning the mechanisms of action through which Adrecizumab may exert its beneficial effects in sepsis.
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Bouchard J, Mehta RL. Angiogenesis Markers and Recovery From Acute Kidney Injury: A Piece of the Puzzle? Am J Kidney Dis 2019; 74:12-14. [PMID: 31103333 DOI: 10.1053/j.ajkd.2019.03.421] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2019] [Accepted: 03/10/2019] [Indexed: 11/11/2022]
Affiliation(s)
- Josée Bouchard
- Hôpital Sacré-Coeur de Montréal, Université de Montréal, Montréal, Canada
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König M, Nentwig A, Marti E, Mirkovitch J, Adamik KN, Schuller S. Evaluation of plasma angiopoietin-2 and vascular endothelial growth factor in healthy dogs and dogs with systemic inflammatory response syndrome or sepsis. J Vet Intern Med 2018; 33:569-577. [PMID: 30575998 PMCID: PMC6430886 DOI: 10.1111/jvim.15369] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2018] [Accepted: 10/18/2018] [Indexed: 12/21/2022] Open
Abstract
Background Angiopoietin‐2 (Ang‐2) and vascular endothelial growth factor (VEGF) are regulators of endothelial permeability. Objective Plasma concentrations of Ang‐2 and VEGF are increased in dogs with systemic inflammatory response syndrome (SIRS) and sepsis and are correlated with disease severity and outcome. Animals Healthy dogs (n = 18) and client‐owned dogs with SIRS (n = 34) or sepsis (n = 25). Methods Prospective observational study. Ang‐2 and VEGF concentrations in admission plasma samples were compared between healthy dogs and dogs with SIRS or sepsis, and between survivors and non‐survivors. Correlations with the acute patient physiologic and laboratory evaluation (APPLEfast) disease severity score were examined. Results Median Ang‐2 was significantly higher in dogs with SIRS (19.3; interquartile range [IQR]: 8.6‐25.7 ng/mL) and sepsis (21.2; IQR: 10.3‐30.1 ng/mL) compared to healthy dogs (7.6; IQR: 6.7‐9.8 ng/mL). Ang‐2 was significantly higher in non‐survivors (24.1; IQR: 11.9‐50.0 ng/mL) than survivors (10.2; IQR: 7.2‐21.5 ng/mL) but did not correlate with the APPLEfast score. Admission Ang‐2 predicted negative outcome in dogs with SIRS and sepsis with reasonable accuracy (area under the curve [AUC]: 0.75, confidence interval [CI]: 0.59‐0.85; sensitivity: 0.5, CI: 0.29‐0.71; specificity: 0.87, CI: 0.75‐0.95); differentiation between sepsis and SIRS was poor (AUC: 0.58). Plasma VEGF was significantly higher in dogs with sepsis (45; IQR: 14‐107.5 pg/mL) than in dogs with SIRS (3.3; IQR: 0‐35.6 pg/mL) or healthy dogs (0; IQR: 0 pg/mL; P = 0.008). VEGF was significantly (P = .0004) higher in non‐survivors (34.5; IQR: 0‐105.7 pg/mL) than in survivors (0; IQR: 0‐55.2 pg/mL). The ability of VEGF to predict a negative outcome was poor. Conclusions and Clinical Importance Ang‐2 may represent a useful additional prognostic marker in dogs with SIRS.
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Affiliation(s)
- Maya König
- Division of Small Animal Internal Medicine, Department of Clinical Veterinary Medicine, Vetsuisse Faculty University of Bern, Bern, Switzerland
| | | | - Eliane Marti
- Division of Experimental Clinical Research, Department of Clinical Research and Veterinary Public Health (DCR-VPH), Vetsuisse Faculty University of Bern, Bern, Switzerland
| | - Jelena Mirkovitch
- Division of Experimental Clinical Research, Department of Clinical Research and Veterinary Public Health (DCR-VPH), Vetsuisse Faculty University of Bern, Bern, Switzerland
| | - Katja-Nicole Adamik
- Emergency and Critical Care Group, Department of Clinical Veterinary Medicine, Vetsuisse Faculty University of Bern, Bern, Switzerland
| | - Simone Schuller
- Division of Small Animal Internal Medicine, Department of Clinical Veterinary Medicine, Vetsuisse Faculty University of Bern, Bern, Switzerland
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Association of Kidney Tissue Barrier Disrupture and Renal Dysfunction in Resuscitated Murine Septic Shock. Shock 2018; 46:398-404. [PMID: 26926005 DOI: 10.1097/shk.0000000000000599] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Septic shock-related kidney failure is characterized by almost normal morphological appearance upon pathological examination. Endothelial barrier disrupture has been suggested to be of crucial importance for septic shock-induced organ dysfunction. Therefore, in murine resuscitated cecal ligation and puncture (CLP)-induced septic shock, we tested the hypothesis whether there is a direct relationship between the kidney endothelial barrier injury and renal dysfunction. Anesthetized mice underwent CLP, and 15 h later, were anesthetized again and surgically instrumented for a 5-h period of intensive care comprising lung-protective mechanical ventilation, fluid resuscitation, continuous i.v. norepinephrine to maintain target hemodynamics, and measurement of creatinine clearance (CrCl). Animals were stratified according to low or high CrCl. Nitrotyrosine formation, expression of the inducible isoform of the nitric oxide synthase, and blood cytokine (tumor necrosis factor, interleukin-6, interleukin-10) and chemokine (monocyte chemoattractant protein-1, keratinocyte-derived chemokine) levels were significantly higher in animals with low CrCl. When plotted against CrCl and neutrophil gelatinase-associated lipocalin levels, extravascular albumin accumulation, and tissue expression of the vascular endothelial growth factor and angiopoietin-1 showed significant mathematical relationships related to kidney (dys)function. Preservation of the constitutive expression of the hydrogen sulfide producing enzyme cystathione-γ-lyase was associated with maintenance of organ function. The direct quantitative relation between microvascular leakage and kidney (dys)function may provide a missing link between near-normal tissue morphology and septic shock-related renal failure, thus further highlighting the important role of vascular integrity in septic shock-related renal failure.
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Cilostazol attenuates intimal hyperplasia in a mouse model of chronic kidney disease. PLoS One 2017; 12:e0187872. [PMID: 29206849 PMCID: PMC5716535 DOI: 10.1371/journal.pone.0187872] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2017] [Accepted: 10/29/2017] [Indexed: 11/21/2022] Open
Abstract
Intimal hyperplasia (IH) is a common cause of vasculopathy due to direct endothelial damage (such as post-coronary revascularization) or indirect injury (such as chronic kidney disease, or CKD). Although the attenuation of coronary revascularization-induced IH (direct-vascular-injury-induced IH) by cilostazol, a phosphodiesterase III inhibitor, has been demonstrated, our understanding of the effect on CKD-induced IH (indirect-vascular-injury-induced IH) is limited. Herein, we tested if cilostazol attenuated CKD-induced IH in a mouse model of ischemic-reperfusion injury with unilateral nephrectomy (Chr I/R), a normotensive non-proteinuria CKD model. Cilostazol (50 mg/kg/day) or placebo was orally administered once daily from 1-week post-nephrectomy. At 20 weeks, cilostazol significantly attenuated aortic IH as demonstrated by a 34% reduction in the total intima area with 50% and 47% decreases in the ratios of tunica intima area/tunica media area and tunica intima area/(tunica intima + tunica media area), respectively. The diameters of aorta and renal function were unchanged by cilostazol. Interestingly, cilostazol decreased miR-221, but enhanced miR-143 and miR-145 in either in vitro or aortic tissue, as well as attenuated several pro-inflammatory mediators, including asymmetrical dimethylarginine, high-sensitivity C-reactive protein, vascular endothelial growth factor in aorta and serum pro-inflammatory cytokines (IL-6 and TNF-α). We demonstrated a proof of concept of the effectiveness of cilostazol in attenuating IH in a Chr I/R mouse model, a CKD model with predominantly indirect-vascular-injury-induced IH. These considerations warrant further investigation to develop a new primary prevention strategy for CKD-related IH.
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Association between genetic polymorphisms in the autophagy-related 5 gene promoter and the risk of sepsis. Sci Rep 2017; 7:9399. [PMID: 28839236 PMCID: PMC5570943 DOI: 10.1038/s41598-017-09978-5] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2017] [Accepted: 07/31/2017] [Indexed: 12/11/2022] Open
Abstract
Previous studies demonstrated significant roles of autophagy in the pathogenesis of sepsis, but few studies focused on the effect of autophagy-related SNPs on sepsis susceptibility. In this present study, five polymorphisms of ATG5/ATG16L1 were investigated for the possible risk on sepsis in a Chinese Han population. Our results showed that ATG5 expression levels decreased with the severity of sepsis, and rs506027 T > C and rs510432 G > A were associated with sepsis progression and mortality. Moreover, the rs506027 TT and rs510432 GG carriers also exhibited increased expression levels of ATG5. Functional assays showed that ATG5 knockdown elevated the secretion of pro-inflammatory cytokines in THP-1 cells, and the extracted mononuclear cell of the risk C-A carriers exhibited decreased ATG5 expression levels, leading to enhanced releases of TNF-α and IL-1β under LPS stimulation in vitro. Furthermore, ATG5 T-G haplotype mutation showed higher promoter activities compared to C-A haplotype mutation, suggesting the effect of these SNPs on ATG5 gene transcription. Taken together, these results above indicated that these two ATG5 promoter polymorphisms may be functional and clinically significant for sepsis progression, underscoring its potentially therapeutic implications for sepsis and other inflammatory diseases.
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Besnier E, Brakenhielm E, Richard V, Tamion F. Does anti-VEGF bevacizumab improve survival in experimental sepsis? CRITICAL CARE : THE OFFICIAL JOURNAL OF THE CRITICAL CARE FORUM 2017; 21:163. [PMID: 28676101 PMCID: PMC5497351 DOI: 10.1186/s13054-017-1734-x] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Emmanuel Besnier
- Normandie Univ, UNIROUEN, INSERM U1096, 76000, Rouen, France. .,Department of Anaesthesia and Critical Care, Rouen University Hospital, 76000, Rouen, France.
| | | | - Vincent Richard
- Normandie Univ, UNIROUEN, INSERM U1096, 76000, Rouen, France
| | - Fabienne Tamion
- Normandie Univ, UNIROUEN, INSERM U1096, 76000, Rouen, France.,Medical Critical Care Unit, Rouen University Hospital, 76000, Rouen, France
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Evans CE, Zhao YY. Impact of thrombosis on pulmonary endothelial injury and repair following sepsis. Am J Physiol Lung Cell Mol Physiol 2017; 312:L441-L451. [PMID: 28130261 PMCID: PMC5407094 DOI: 10.1152/ajplung.00441.2016] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2016] [Revised: 12/20/2016] [Accepted: 01/19/2017] [Indexed: 12/19/2022] Open
Abstract
The prevailing morbidity and mortality in sepsis are largely due to multiple organ dysfunction (MOD), most commonly lung injury, as well as renal and cardiac dysfunction. Despite recent advances in defining many aspects of the pathogenesis of sepsis-related MOD, including acute respiratory distress syndrome (ARDS), there are currently no effective pharmacological or cell-based treatments for the disease. Human and animal studies have shown that pulmonary thrombosis is common in sepsis-induced ARDS, and preclinical studies have shown that anticoagulation may improve outcome following sepsis challenge. The potential beneficial effect of anticoagulation on outcome is unconvincing in clinical studies, however, and these discrepancies may arise from the multiple and sometimes opposing actions of thrombosis on the pulmonary endothelium following sepsis. It has been suggested, for example, that mild pulmonary thrombosis prevents escape of bacterial infection into the circulation, while severe thrombosis causes hypoxia and results in pulmonary endothelial damage. Evidence from both human and animal studies has demonstrated the key role of microvascular leakage in determining the outcome of sepsis. In this review, we describe thrombosis-dependent mechanisms that regulate pulmonary endothelial injury and repair following sepsis, including activation of the coagulation cascade by tissue factor and stimulation of vascular repair by hypoxia-inducible factors. Targeting such mechanisms through anticoagulant, anti-inflammatory, and reparative methods may represent a novel approach for the treatment of septic patients.
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Affiliation(s)
- Colin E Evans
- Department of Pharmacology, University of Illinois at Chicago, College of Medicine, Chicago, Illinois; and
- Center for Lung and Vascular Biology, University of Illinois at Chicago, College of Medicine, Chicago, Illinois
| | - You-Yang Zhao
- Department of Pharmacology, University of Illinois at Chicago, College of Medicine, Chicago, Illinois; and
- Center for Lung and Vascular Biology, University of Illinois at Chicago, College of Medicine, Chicago, Illinois
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Hemdan NYA, Weigel C, Reimann CM, Gräler MH. Modulating sphingosine 1-phosphate signaling with DOP or FTY720 alleviates vascular and immune defects in mouse sepsis. Eur J Immunol 2016; 46:2767-2777. [PMID: 27683081 DOI: 10.1002/eji.201646417] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2016] [Revised: 09/01/2016] [Accepted: 09/27/2016] [Indexed: 12/12/2022]
Abstract
Sepsis is a systemic inflammatory response to pathogens and a leading cause of hospital related mortality worldwide. Sphingosine 1-phosphate (S1P) regulates multiple cellular processes potentially involved in the pathogenesis of sepsis, including antigen presentation, lymphocyte egress, and maintenance of vascular integrity. We thus explored the impact of manipulating S1P signaling in experimental polymicrobial sepsis in mice. Administration of 4-deoxypyridoxine (DOP), an inhibitor of the S1P-degrading enzyme S1P-lyase, or of the sphingosine analog FTY720 that serves as an S1P receptor agonist after phosphorylation ameliorated morbidity, improved recovery from sepsis in surviving mice, and reduced sepsis-elicited hypothermia and body weight loss. Treated mice developed lymphopenia, leading to an accumulation of lymphocytes in peripheral lymph nodes, and reduced bacterial burden in liver, but not in blood. Sepsis-induced upregulation of mRNA expression of cytokines in spleen remained unchanged, but reduction of IL-6, TNF-α, MCP-1, and IL-10 in plasma was evident. DOP and FTY720 treatment significantly reduced levels of Evans blue leakage from blood into liver and lung, decreased hematocrit values, and lowered plasma levels of VEGF-A in septic mice. Collectively, our results indicate that modulation of S1P signaling showed a protective phenotype in experimental sepsis by modulating vascular and immune functions.
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Affiliation(s)
- Nasr Y A Hemdan
- Department of Anesthesiology and Intensive Care Medicine, Center for Sepsis Control and Care (CSCC), and the Center for Molecular Biomedicine (CMB), University Hospital Jena, Jena, Germany
| | - Cynthia Weigel
- Department of Anesthesiology and Intensive Care Medicine, Center for Sepsis Control and Care (CSCC), and the Center for Molecular Biomedicine (CMB), University Hospital Jena, Jena, Germany.,Fritz Lipmann Institute, Leibniz Institute on Aging, Jena, Germany
| | - Christina-Maria Reimann
- Department of Anesthesiology and Intensive Care Medicine, Center for Sepsis Control and Care (CSCC), and the Center for Molecular Biomedicine (CMB), University Hospital Jena, Jena, Germany
| | - Markus H Gräler
- Department of Anesthesiology and Intensive Care Medicine, Center for Sepsis Control and Care (CSCC), and the Center for Molecular Biomedicine (CMB), University Hospital Jena, Jena, Germany
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Lee W, Kwak S, Yun E, Lee JH, Na M, Song GY, Bae JS. Antiseptic Effects of New 3'-N-Substituted Carbazole Derivatives In Vitro and In Vivo. Inflammation 2016; 38:1649-61. [PMID: 25743565 DOI: 10.1007/s10753-015-0141-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
Inhibition of high-mobility group box 1 (HMGB1) protein and restoration of endothelial integrity are emerging as attractive therapeutic strategies in the management of sepsis. Here, new five structurally related 3'-N-substituted carbazole derivatives were examined for their effects on lipopolysaccharide (LPS)-mediated or cecal ligation and puncture (CLP)-mediated release of HMGB1 and on modulation of HMGB1-mediated inflammatory responses. We accessed this question by monitoring the effects of posttreatment carbazole derivatives on LPS- and CLP-mediated release of HMGB1 and HMGB1-mediated regulation of proinflammatory responses in human umbilical vein endothelial cells (HUVECs) and septic mice. The new 3'-N-substituted carbazole derivatives 1-5 inhibited the release of HMGB1 and downregulated HMGB1-dependent inflammatory responses in human endothelial cells. New compounds also inhibited HMGB1-mediated hyperpermeability and leukocyte migration in mice. In addition, treatment with each compound reduced CLP-induced release of HMGB1 and sepsis-related mortality and pulmonary injury in mice. These results indicate that the new 3'-N-substituted carbazole derivatives could be candidate therapeutic agents for various severe vascular inflammatory diseases owing to their inhibition of the HMGB1 signaling pathway.
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Affiliation(s)
- Wonhwa Lee
- College of Pharmacy, CMRI, Research Institute of Pharmaceutical Sciences, Kyungpook National University, 80 Daehak-ro, Buk-gu, Daegu, 702-701, Republic of Korea
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Zhang X, Li J, Li C, Li Y, Zhu W, Zhou H, Ding Z, Liu L. HSPA12B attenuates acute lung injury during endotoxemia in mice. Int Immunopharmacol 2015; 29:599-606. [DOI: 10.1016/j.intimp.2015.09.022] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2015] [Revised: 09/21/2015] [Accepted: 09/24/2015] [Indexed: 01/24/2023]
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Chen KH, Lundy DJ, Toh EKW, Chen CH, Shih C, Chen P, Chang HC, Lai JJ, Stayton PS, Hoffman AS, Hsieh PCH. Nanoparticle distribution during systemic inflammation is size-dependent and organ-specific. NANOSCALE 2015; 7:15863-72. [PMID: 26359216 DOI: 10.1039/c5nr03626g] [Citation(s) in RCA: 67] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/18/2023]
Abstract
This study comprehensively investigates the changing biodistribution of fluorescent-labelled polystyrene latex bead nanoparticles in a mouse model of inflammation. Since inflammation alters systemic circulatory properties, increases vessel permeability and modulates the immune system, we theorised that systemic inflammation would alter nanoparticle distribution within the body. This has implications for prospective nanocarrier-based therapies targeting inflammatory diseases. Low dose lipopolysaccharide (LPS), a bacterial endotoxin, was used to induce an inflammatory response, and 20 nm, 100 nm or 500 nm polystyrene nanoparticles were administered after 16 hours. HPLC analysis was used to accurately quantify nanoparticle retention by each vital organ, and tissue sections revealed the precise locations of nanoparticle deposition within key tissues. During inflammation, nanoparticles of all sizes redistributed, particularly to the marginal zones of the spleen. We found that LPS-induced inflammation induces splenic macrophage polarisation and alters leukocyte uptake of nanoparticles, with size-dependent effects. In addition, spleen vasculature becomes significantly more permeable following LPS treatment. We conclude that systemic inflammation affects nanoparticle distribution by multiple mechanisms, in a size dependent manner.
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Affiliation(s)
- K-H Chen
- Institute of Biomedical Sciences, Academia Sinica, 128 Sec. 2, Academia Rd., Taipei 115, Taiwan.
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Yoo H, Ku SK, Zhou W, Han MS, Na M, Bae JS. Anti-septic effects of phenolic glycosides from Rhododendron brachycarpum in vitro and in vivo. J Funct Foods 2015. [DOI: 10.1016/j.jff.2015.04.053] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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Vera S, Martínez R, Gormaz JG, Gajardo A, Galleguillos F, Rodrigo R. Novel relationships between oxidative stress and angiogenesis-related factors in sepsis: New biomarkers and therapies. Ann Med 2015; 47:289-300. [PMID: 25998489 DOI: 10.3109/07853890.2015.1029967] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
Sepsis is a systemic uncontrolled inflammatory response in the presence of an infection. It remains a major cause of morbidity and mortality in hospitalized patients. According to its severity, sepsis can progress to three different states: severe sepsis, septic shock, and multiple organ dysfunction syndrome, related to organ dysfunction and/or tissue hypoperfusion. Different processes underlie its pathophysiology; among them are oxidative stress, endothelial and mitochondrial dysfunction, and angiogenesis-related factors. However, no studies have integrated these elements in sepsis. The main difficulty in sepsis is its diagnosis. Currently, the potential of inflammatory biomarkers in septic patients remains weak. In this context, the research into new biomarkers is essential to aid with sepsis diagnosis and prognostication. Furthermore, even though the current management of severe forms of sepsis has been effective, morbimortality remains elevated. Therefore, it is essential to explore alternative approaches to therapy development. The aim of this review is to present an update of evidence supporting the role of oxidative stress and angiogenesis-related factors in the pathophysiology of the different forms of sepsis. It proposes a novel convergence between both elements in their role in the disease, and it will cover their utility as new diagnostic tools, predictors of outcome, and as novel therapeutic targets.
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Affiliation(s)
- Sergio Vera
- Laboratory of Oxidative Stress and Nephrotoxicity, Molecular and Clinical Pharmacology Program, Institute of Biomedical Sciences, Faculty of Medicine, University of Chile , Santiago , Chile
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Microparticles: markers and mediators of sepsis-induced microvascular dysfunction, immunosuppression, and AKI. Kidney Int 2015; 87:1100-8. [PMID: 25692956 PMCID: PMC4449806 DOI: 10.1038/ki.2015.26] [Citation(s) in RCA: 64] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2014] [Revised: 08/26/2014] [Accepted: 08/27/2014] [Indexed: 01/28/2023]
Abstract
Sepsis is a severe and complex syndrome that lacks effective prevention or therapeutics. The effects of sepsis on the microvasculature have become an attractive area for possible new targets and therapeutics. Microparticles (MPs) are cell membrane-derived particles that can promote coagulation, inflammation, and angiogenesis, and they can participate in cell-to-cell communication. MPs retain cell membrane and cytoplasmic constituents of their parental cells, including two procoagulants: phosphatidylserine and tissue factor. We highlight the role of microparticles released by endothelial and circulating cells after sepsis-induced microvascular injury, and we discuss possible mechanisms by which microparticles can contribute to endothelial dysfunction, immunosuppression, and multiorgan dysfunction--including sepsis-AKI. Once viewed as cellular byproducts, microparticles are emerging as a new class of markers and mediators in the pathogenesis of sepsis.
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Liu MW, Wang YH, Qian CY, Li H. Xuebijing exerts protective effects on lung permeability leakage and lung injury by upregulating Toll-interacting protein expression in rats with sepsis. Int J Mol Med 2014; 34:1492-504. [PMID: 25269519 PMCID: PMC4214342 DOI: 10.3892/ijmm.2014.1943] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2014] [Accepted: 09/16/2014] [Indexed: 01/07/2023] Open
Abstract
Xuebijing (XBJ) is a type of traditional Tibetan medicine, and previous pharmacological studies have shown that the ethanol extract is derived from Chuanxiong, Chishao, Danshen and Honghua. Chuanxiong, Chishao, Danshen and Honghua possesses potent anti-inflammatory activity, and has been used in the treatment of inflammatory infectious diseases. In the present study, we investigated the effects of XBJ on pulmonary permeability and lung injury in cecal ligation and puncture (CLP)-induced sepsis in rats. A CLP sepsis model was established for the control and treatment groups, respectively. Approximately 2 h prior to surgery, an amount of 100 mg/kg XBJ injection was administered to the treatment group. Reverse transcription polymerase chain reaction (PT-PCR) and western blot analysis were used to examine the expression of Toll-interacting protein (Tollip), interleukin-1 receptor-associated kinase 1 (IRAK1), Toll-like receptor 4 (TLR4), nuclear factor-κB65 (NF-κB65) and TNF receptor-associated factor 6 (TRAF6) in lung tissue. ELISA was applied to detect changes of tumor necrosis factor-α (TNF-α), interleukin-6 (IL-6), interleukin-1 (IL-1), interleukin-4 (IL-4) and interleukin-10 (IL-10) levels in bronchoalveolar lavage (BAL) fluid, and intercellular adhesion molecule 1 (ICAM-1) and von Willebrand factor (vWF) in serum. The number of neutrophils, albumin and total cells in the BAL fluid were measured. For histological analysis, hematoxylin and eosin (H&E) stains were evaluated. Lung permeability, the wet/dry weight ratio (W/D) and the lung pathology score were determined following the induction of ALI by CLP for 24 h. The results demonstrated that XBJ upregulated Tollip expression and blocked the activity of IRAK1, TLR4, NF-κβ65 and TRAF6. Additionally, the number of neutrophils and total cells were significantly decreased in the XBJ group compared to that in the control group. Lung permeability, the wet/dry weight ratio (W/D) and the lung pathology score were significantly decreased in the XBJ group. The histological results also demonstrated the attenuation effect of XBJ on CLP-induced lung inflammation. The results of the present study indicated that XBJ has a significantly reduced CLP-induced lung permeability by upregulating Tollip expression. The protective effects of XBJ suggest its therapeutic potential in CLP-induced acute lung injury treatment.
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Affiliation(s)
- Ming-Wei Liu
- Department of Emergency, The First Hospital Affiliated To Kunming Medical University, Kunming, Yunnan 650000, P.R. China
| | - Yun-Hui Wang
- Department of Emergency, The First Hospital Affiliated To Kunming Medical University, Kunming, Yunnan 650000, P.R. China
| | - Chuan-Yun Qian
- Department of Emergency, The First Hospital Affiliated To Kunming Medical University, Kunming, Yunnan 650000, P.R. China
| | - Hui Li
- Surgical Intensive Care Unit, The Second Hospital Affiliated To Kunming Medical University, Kunming, Yunnan 650000, P.R. China
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Kwak S, Ku SK, Han MS, Bae JS. Vascular barrier protective effects of baicalin, baicalein and wogonin in vitro and in vivo. Toxicol Appl Pharmacol 2014; 281:30-8. [PMID: 25223693 DOI: 10.1016/j.taap.2014.09.003] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2014] [Revised: 08/26/2014] [Accepted: 09/02/2014] [Indexed: 11/19/2022]
Abstract
Inhibition of high mobility group box 1 (HMGB1) protein and restoration of endothelial integrity is emerging as an attractive therapeutic strategy in the management of sepsis. Here, three structurally related polyphenols found in the Chinese herb Huang Qui, baicalin (BCL), baicalein (BCN), and wogonin (WGN), were examined for their effects on lipopolysaccharide (LPS)- or cecal ligation and puncture (CLP)-mediated release of HMGB1 and on modulation of HMGB1-mediated inflammatory responses. According to our data, BCL, BCN, and WGN inhibited the release of HMGB1 and down-regulated HMGB1-dependent inflammatory responses in human endothelial cells. BCL, BCN, and WGN also inhibited HMGB1-mediated hyperpermeability and leukocyte migration in mice. In addition, treatment with BCL, BCN, and WGN reduced CLP-induced release of HMGB1 and sepsis-related mortality and pulmonary injury in mice. These results indicate that BCL, BCN, and WGN could be candidate therapeutic agents for various severe vascular inflammatory diseases owing to their inhibition of the HMGB1 signaling pathway.
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Affiliation(s)
- Soyoung Kwak
- College of Pharmacy, CMRI, Research Institute of Pharmaceutical Sciences, Kyungpook National University, Daegu 702-701, Republic of Korea
| | - Sae-Kwang Ku
- Department of Anatomy and Histology, College of Korean Medicine, Daegu Haany University, Gyeongsan 712-715, Republic of Korea
| | - Min-Su Han
- Laboratory for Arthritis and Bone Biology, Fatima Research Institute, Fatima Hospital, Daegu 701-600, Republic of Korea
| | - Jong-Sup Bae
- College of Pharmacy, CMRI, Research Institute of Pharmaceutical Sciences, Kyungpook National University, Daegu 702-701, Republic of Korea.
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Gao R, Chen J, Hu Y, Li Z, Wang S, Shetty S, Fu J. Sirt1 deletion leads to enhanced inflammation and aggravates endotoxin-induced acute kidney injury. PLoS One 2014; 9:e98909. [PMID: 24896770 PMCID: PMC4045768 DOI: 10.1371/journal.pone.0098909] [Citation(s) in RCA: 56] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2014] [Accepted: 05/08/2014] [Indexed: 01/20/2023] Open
Abstract
Bacterial endotoxin has been known to induce excessive inflammatory responses and acute kidney injury. In the present study, we used a mouse model of endotoxemia to investigate the role of Sirt1 in inflammatory kidney injury. We examined molecular and cellular responses in inducible Sirt1 knockout (Sirt1-/-) mice and wild type littermates (Sirt1+/+) in lipopolysaccharide (LPS)-induced kidney injury. Our studies demonstrated that Sirt1 deletion caused aggravated kidney injury, which was associated with increased inflammatory responses including elevated pro-inflammatory cytokine production, and increased ICAM-1 and VCAM-1 expression. Inflammatory signaling such as STAT3/ERK phosphorylation and NF-κB activation was markedly elevated in kidney tissues of Sirt1 knockout mice after LPS challenge. The results indicate that Sirt1 is protective against LPS-induced acute kidney injury by suppressing kidney inflammation and down-regulating inflammatory signaling.
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Affiliation(s)
- Rong Gao
- The Second Hospital of Jilin University, Changchun, Jilin, China
- Center for Research on Environmental Disease, College of Medicine, University of Kentucky, Lexington, Kentucky, United States of America
| | - Jiao Chen
- Center for Research on Environmental Disease, College of Medicine, University of Kentucky, Lexington, Kentucky, United States of America
| | - Yuxin Hu
- The Second Hospital of Jilin University, Changchun, Jilin, China
- Center for Research on Environmental Disease, College of Medicine, University of Kentucky, Lexington, Kentucky, United States of America
| | - Zhenyu Li
- Division of Cardiovascular Medicine, College of Medicine, University of Kentucky, Lexington, Kentucky, United States of America
| | - Shuxia Wang
- Graduate Center for Nutritional Sciences, College of Medicine, University of Kentucky, Lexington, Kentucky, United States of America
| | - Sreerama Shetty
- Center for Biomedical Research, University of Texas Health Science Center at Tyler, Tyler, Texas, United States of America
| | - Jian Fu
- Center for Research on Environmental Disease, College of Medicine, University of Kentucky, Lexington, Kentucky, United States of America
- Graduate Center for Toxicology, College of Medicine, University of Kentucky, Lexington, Kentucky, United States of America
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Zhang RY, Zhang H, Huang J, Qu HP, Tang YQ. Angiogenic factors in sepsis: are we ready for the new therapeutic era? CRITICAL CARE : THE OFFICIAL JOURNAL OF THE CRITICAL CARE FORUM 2014; 18:403. [PMID: 24476499 PMCID: PMC4056437 DOI: 10.1186/cc13710] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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Shaik-Dasthagirisaheb YB, Varvara G, Murmura G, Saggini A, Potalivo G, Caraffa A, Antinolfi P, Tete' S, Tripodi D, Conti F, Cianchetti E, Toniato E, Rosati M, Conti P, Speranza L, Pantalone A, Saggini R, Theoharides TC, Pandolfi F. Vascular endothelial growth factor (VEGF), mast cells and inflammation. Int J Immunopathol Pharmacol 2013; 26:327-35. [PMID: 23755748 DOI: 10.1177/039463201302600206] [Citation(s) in RCA: 84] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
Abstract
Vascular endothelial growth factor (VEGF) is one of the most important inducers of angiogenesis, therefore blocking angiogenesis has led to great promise in the treatment of various cancers and inflammatory diseases. VEGF, expressed in response to soluble mediators such as cytokines and growth factors, is important in the physiological development of blood vessels as well as development of vessels in tumors. In cancer patients VEGF levels are increased, and the expression of VEGF is associated with poor prognosis in diseases. VEGF is a mediator of angiogenesis and inflammation which are closely integrated processes in a number of physiological and pathological conditions including obesity, psoriasis, autoimmune diseases and tumor. Mast cells can be activated by anti-IgE to release potent mediators of inflammation and can also respond to bacterial or viral antigens, cytokines, growth factors and hormones, leading to differential release of distinct mediators without degranulation. Substance P strongly induces VEGF in mast cells, and IL-33 contributes to the stimulation and release of VEGF in human mast cells in a dose-dependent manner and acts synergistically in combination with Substance P. Here we report a strong link between VEGF and mast cells and we depict their role in inflammation and immunity.
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Zhang RY, Liu YY, Qu HP, Tang YQ. The angiogenic factors and their soluble receptors in sepsis: friend, foe, or both? Crit Care 2013; 17:446. [PMID: 23968539 PMCID: PMC4056530 DOI: 10.1186/cc12857] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/03/2022] Open
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