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Guo S, Yan Y, Zhang J, Yang Z, Tu L, Wang C, Kong Z, Wang S, Wang B, Qin D, Zhou J, Wang W, Hao Y, Guo S. Serum lipidome reveals lipid metabolic dysregulation in severe fever with thrombocytopenia syndrome. BMC Med 2024; 22:458. [PMID: 39396989 PMCID: PMC11472499 DOI: 10.1186/s12916-024-03672-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/21/2024] [Accepted: 09/30/2024] [Indexed: 10/15/2024] Open
Abstract
BACKGROUND Severe fever with thrombocytopenia syndrome (SFTS) is a rapidly progressing infectious disease with a high fatality rate caused by a novel bunyavirus (SFTSV). The role of lipids in viral infections is well-documented; however, the specific alterations in lipid metabolism during SFTSV infection remain elusive. This study aims to elucidate the lipid metabolic dysregulations in the early stages of SFTS patients. METHODS This study prospectively collected peripheral blood sera from 11 critical SFTS patients, 37 mild SFTS patients, and 23 healthy controls during the early stages of infection for lipidomics analysis. A systematic bioinformatics analysis was conducted from three aspects integrating lipid differential expressions, lipid differential correlations, and lipid-clinical indices correlations to reveal the serum lipid metabolic dysregulation in SFTSV-infected individuals. RESULTS Our findings reveal significant lipid metabolic dysregulation in SFTS patients. Specifically, compared to healthy controls, SFTS patients exhibited three distinct modes of lipid differential expression: increased levels of lipids including phosphatidylserine (PS), hexosylceramide (HexCer), and triglycerides (TG); decreased levels of lipids including lysophosphatidylcholine (LPC), acylcarnitine (AcCa), and cholesterol esters (ChE); and lipids showing "dual changes" including phosphatidylcholine (PC) and phosphatidylethanolamine (PE). Finally, based on lipid metabolic pathways and literature analysis, we systematically elucidated the potential mechanisms underlying lipid metabolic dysregulation in the early stage of SFTSV infection. CONCLUSIONS Our study presents the first global serum lipidome profile and reveals the lipid metabolic dysregulation patterns in the early stage of SFTSV infection. These findings provide a new basis for the diagnosis, treatment, and further investigation of the disease.
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Affiliation(s)
- Shuai Guo
- Department of Neurology, Shandong Provincial Hospital, Shandong University, Jinan, China
- Department of Neurology, Shandong Provincial HospitalAffiliated to, Shandong First Medical University , Jinan, China
| | - Yunjun Yan
- Jinan Dian Medical Laboratory CO., LTD, Shandong, China
| | - Jingyao Zhang
- Department of Infectious Diseases, Shandong Provincial Public Health Clinical Center, Jinan, China
| | - Zhangong Yang
- Calibra Lab at DIAN Diagnostics, Hangzhou, 310030, China
| | - Lirui Tu
- Department of Infectious Diseases, Shandong Provincial Public Health Clinical Center, Jinan, China
| | - Chunjuan Wang
- Department of Neurology, Shandong Provincial Hospital, Shandong University, Jinan, China
- Department of Neurology, Shandong Provincial HospitalAffiliated to, Shandong First Medical University , Jinan, China
| | - Ziqing Kong
- Calibra Lab at DIAN Diagnostics, Hangzhou, 310030, China
| | - Shuhua Wang
- Center of Health Management, Shandong Provincial HospitalAffiliated to, Shandong First Medical University , Jinan, China
| | - Baojie Wang
- Department of Neurology, Shandong Provincial Hospital, Shandong University, Jinan, China
- Department of Neurology, Shandong Second Provincial General Hospital, Jinan, China
| | - Danqing Qin
- Department of Neurology, Shandong Provincial Hospital, Shandong University, Jinan, China
- Department of Neurology, Shandong Provincial HospitalAffiliated to, Shandong First Medical University , Jinan, China
| | - Jie Zhou
- Department of Neurology, Shandong Provincial HospitalAffiliated to, Shandong First Medical University , Jinan, China
- Department of Neurology, The Fifth People's Hospital of Jinan, Jinan, China
| | - Wenjin Wang
- Department of Neurology, Shandong Provincial Hospital, Shandong University, Jinan, China
- Department of Neurology, Shandong Provincial HospitalAffiliated to, Shandong First Medical University , Jinan, China
| | - Yumei Hao
- Institute of Reproduction and Development, Obstetrics and Gynecology Hospital, Fudan University, Shanghai, China.
- Key Laboratory of Digital Technology in Medical Diagnostics of Zhejiang Province, Dian Diagnostics Group, Hangzhou, China.
| | - Shougang Guo
- Department of Neurology, Shandong Provincial Hospital, Shandong University, Jinan, China.
- Department of Neurology, Shandong Provincial HospitalAffiliated to, Shandong First Medical University , Jinan, China.
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2
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Jia X, Crawford JC, Gebregzabher D, Monson EA, Mettelman RC, Wan Y, Ren Y, Chou J, Novak T, McQuilten HA, Clarke M, Bachem A, Foo IJ, Fritzlar S, Carrera Montoya J, Trenerry AM, Nie S, Leeming MG, Nguyen THO, Kedzierski L, Littler DR, Kueh A, Cardamone T, Wong CY, Hensen L, Cabug A, Laguna JG, Agrawal M, Flerlage T, Boyd DF, Van de Velde LA, Habel JR, Loh L, Koay HF, van de Sandt CE, Konstantinov IE, Berzins SP, Flanagan KL, Wakim LM, Herold MJ, Green AM, Smallwood HS, Rossjohn J, Thwaites RS, Chiu C, Scott NE, Mackenzie JM, Bedoui S, Reading PC, Londrigan SL, Helbig KJ, Randolph AG, Thomas PG, Xu J, Wang Z, Chua BY, Kedzierska K. High expression of oleoyl-ACP hydrolase underpins life-threatening respiratory viral diseases. Cell 2024; 187:4586-4604.e20. [PMID: 39137778 DOI: 10.1016/j.cell.2024.07.026] [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: 07/07/2023] [Revised: 03/07/2024] [Accepted: 07/17/2024] [Indexed: 08/15/2024]
Abstract
Respiratory infections cause significant morbidity and mortality, yet it is unclear why some individuals succumb to severe disease. In patients hospitalized with avian A(H7N9) influenza, we investigated early drivers underpinning fatal disease. Transcriptomics strongly linked oleoyl-acyl-carrier-protein (ACP) hydrolase (OLAH), an enzyme mediating fatty acid production, with fatal A(H7N9) early after hospital admission, persisting until death. Recovered patients had low OLAH expression throughout hospitalization. High OLAH levels were also detected in patients hospitalized with life-threatening seasonal influenza, COVID-19, respiratory syncytial virus (RSV), and multisystem inflammatory syndrome in children (MIS-C) but not during mild disease. In olah-/- mice, lethal influenza infection led to survival and mild disease as well as reduced lung viral loads, tissue damage, infection-driven pulmonary cell infiltration, and inflammation. This was underpinned by differential lipid droplet dynamics as well as reduced viral replication and virus-induced inflammation in macrophages. Supplementation of oleic acid, the main product of OLAH, increased influenza replication in macrophages and their inflammatory potential. Our findings define how the expression of OLAH drives life-threatening viral disease.
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Affiliation(s)
- Xiaoxiao Jia
- Department of Microbiology and Immunology, University of Melbourne, Peter Doherty Institute for Infection and Immunity, Melbourne, VIC 3000, Australia
| | - Jeremy Chase Crawford
- Department of Host-Microbe Interactions, St. Jude Children's Research Hospital, Memphis, TN 38105, USA; Center for Infectious Diseases Research, St. Jude Children's Research Hospital, Memphis, TN 38105, USA.
| | - Deborah Gebregzabher
- Department of Microbiology and Immunology, University of Melbourne, Peter Doherty Institute for Infection and Immunity, Melbourne, VIC 3000, Australia
| | - Ebony A Monson
- Department of Microbiology, Anatomy, Physiology and Pharmacology, La Trobe Institute for Molecular Science, La Trobe University, Bundoora, VIC 3086, Australia
| | - Robert C Mettelman
- Department of Host-Microbe Interactions, St. Jude Children's Research Hospital, Memphis, TN 38105, USA
| | - Yanmin Wan
- Shanghai Public Health Clinical Centre and Institutes of Biomedical Sciences, Key Laboratory of Medical Molecular Virology of Ministry of Education/Health, Shanghai Medical College, Fudan University, Shanghai 201508, China
| | - Yanqin Ren
- Shanghai Public Health Clinical Centre, Fudan University, Shanghai 201508, China
| | - Janet Chou
- Division of Immunology, Boston Children's Hospital, Harvard Medical School, Boston, MA 02115, USA
| | - Tanya Novak
- Department of Anesthesiology, Critical Care, and Pain Medicine, Boston Children's Hospital and Department of Anaesthesia, Harvard Medical School, Boston, MA 02115, USA
| | - Hayley A McQuilten
- Department of Microbiology and Immunology, University of Melbourne, Peter Doherty Institute for Infection and Immunity, Melbourne, VIC 3000, Australia
| | - Michele Clarke
- Department of Microbiology and Immunology, University of Melbourne, Peter Doherty Institute for Infection and Immunity, Melbourne, VIC 3000, Australia
| | - Annabell Bachem
- Department of Microbiology and Immunology, University of Melbourne, Peter Doherty Institute for Infection and Immunity, Melbourne, VIC 3000, Australia
| | - Isabelle J Foo
- Department of Microbiology and Immunology, University of Melbourne, Peter Doherty Institute for Infection and Immunity, Melbourne, VIC 3000, Australia
| | - Svenja Fritzlar
- Department of Microbiology and Immunology, University of Melbourne, Peter Doherty Institute for Infection and Immunity, Melbourne, VIC 3000, Australia
| | - Julio Carrera Montoya
- Department of Microbiology and Immunology, University of Melbourne, Peter Doherty Institute for Infection and Immunity, Melbourne, VIC 3000, Australia
| | - Alice M Trenerry
- Department of Microbiology and Immunology, University of Melbourne, Peter Doherty Institute for Infection and Immunity, Melbourne, VIC 3000, Australia
| | - Shuai Nie
- Melbourne Mass Spectrometry and Proteomics Facility, Bio21 Molecular Science and Biotechnology Institute, University of Melbourne, Parkville, VIC 3052, Australia
| | - Michael G Leeming
- Melbourne Mass Spectrometry and Proteomics Facility, Bio21 Molecular Science and Biotechnology Institute, University of Melbourne, Parkville, VIC 3052, Australia
| | - Thi H O Nguyen
- Department of Microbiology and Immunology, University of Melbourne, Peter Doherty Institute for Infection and Immunity, Melbourne, VIC 3000, Australia
| | - Lukasz Kedzierski
- Department of Microbiology and Immunology, University of Melbourne, Peter Doherty Institute for Infection and Immunity, Melbourne, VIC 3000, Australia
| | - Dene R Littler
- Infection and Immunity Program, Department of Biochemistry and Molecular Biology, Biomedicine Discovery Institute, Monash University, Clayton, VIC 3800, Australia
| | - Andrew Kueh
- Walter Eliza Hall Institute of Medical Research, Parkville, VIC 3052, Australia; Department of Medical Biology, University of Melbourne, Parkville, VIC 3010, Australia; Olivia Newton-John Cancer Research Institute, Heidelberg, VIC 3084, Australia; School of Cancer Medicine, La Trobe University, Bundoora, VIC 3086, Australia
| | - Tina Cardamone
- Department of Anatomy and Physiology, University of Melbourne, Parkville, VIC 3010, Australia
| | - Chinn Yi Wong
- Department of Microbiology and Immunology, University of Melbourne, Peter Doherty Institute for Infection and Immunity, Melbourne, VIC 3000, Australia
| | - Luca Hensen
- Department of Microbiology and Immunology, University of Melbourne, Peter Doherty Institute for Infection and Immunity, Melbourne, VIC 3000, Australia
| | - Aira Cabug
- Department of Microbiology and Immunology, University of Melbourne, Peter Doherty Institute for Infection and Immunity, Melbourne, VIC 3000, Australia
| | - Jaime Gómez Laguna
- Department of Anatomy and Comparative Pathology and Toxicology, Pathology and Immunology Group, University of Córdoba, International Excellence Agrifood Campus "CeiA3", 14014 Córdoba, Spain
| | - Mona Agrawal
- Department of Pediatrics, University of Tennessee Health Science Center, Memphis, TN 38163, USA
| | - Tim Flerlage
- Department of Infectious Diseases, St. Jude Children's Research Hospital, Memphis, TN 38105, USA
| | - David F Boyd
- Department of Molecular, Cell & Developmental Biology, University of California, Santa Cruz, Santa Cruz, CA 95064, USA
| | - Lee-Ann Van de Velde
- Department of Host-Microbe Interactions, St. Jude Children's Research Hospital, Memphis, TN 38105, USA
| | - Jennifer R Habel
- Department of Microbiology and Immunology, University of Melbourne, Peter Doherty Institute for Infection and Immunity, Melbourne, VIC 3000, Australia
| | - Liyen Loh
- Department of Microbiology and Immunology, University of Melbourne, Peter Doherty Institute for Infection and Immunity, Melbourne, VIC 3000, Australia
| | - Hui-Fern Koay
- Department of Microbiology and Immunology, University of Melbourne, Peter Doherty Institute for Infection and Immunity, Melbourne, VIC 3000, Australia
| | - Carolien E van de Sandt
- Department of Microbiology and Immunology, University of Melbourne, Peter Doherty Institute for Infection and Immunity, Melbourne, VIC 3000, Australia
| | - Igor E Konstantinov
- Department of Cardiothoracic Surgery, Royal Children's Hospital, University of Melbourne, Melbourne Centre for Cardiovascular Genomics and Regenerative Medicine, Parkville, VIC 3052, Australia
| | - Stuart P Berzins
- Department of Microbiology and Immunology, University of Melbourne, Peter Doherty Institute for Infection and Immunity, Melbourne, VIC 3000, Australia; Institute of Innovation, Science and Sustainability, Federation University Australia, Ballarat, VIC 3353, Australia
| | - Katie L Flanagan
- School of Health Sciences and School of Medicine, University of Tasmania, Launceston, TAS 7248, Australia; School of Health and Biomedical Science, RMIT University, Bundoora, VIC 3083, Australia; Tasmanian Vaccine Trial Centre, Clifford Craig Foundation, Launceston General Hospital, Launceston, TAS 7250, Australia
| | - Linda M Wakim
- Department of Microbiology and Immunology, University of Melbourne, Peter Doherty Institute for Infection and Immunity, Melbourne, VIC 3000, Australia
| | - Marco J Herold
- Walter Eliza Hall Institute of Medical Research, Parkville, VIC 3052, Australia; Department of Medical Biology, University of Melbourne, Parkville, VIC 3010, Australia; Olivia Newton-John Cancer Research Institute, Heidelberg, VIC 3084, Australia; School of Cancer Medicine, La Trobe University, Bundoora, VIC 3086, Australia
| | - Amanda M Green
- Center for Infectious Diseases Research, St. Jude Children's Research Hospital, Memphis, TN 38105, USA; Department of Infectious Diseases, St. Jude Children's Research Hospital, Memphis, TN 38105, USA
| | - Heather S Smallwood
- Department of Pediatrics, University of Tennessee Health Science Center, Memphis, TN 38163, USA
| | - Jamie Rossjohn
- Infection and Immunity Program, Department of Biochemistry and Molecular Biology, Biomedicine Discovery Institute, Monash University, Clayton, VIC 3800, Australia; Institute of Infection and Immunity, School of Medicine, Cardiff University, Heath Park, Cardiff, UK
| | - Ryan S Thwaites
- National Heart and Lung Institute, Imperial College London, London SW7 2AZ, UK
| | - Christopher Chiu
- Department of Infectious Disease, Imperial College London, London, UK
| | - Nichollas E Scott
- Department of Microbiology and Immunology, University of Melbourne, Peter Doherty Institute for Infection and Immunity, Melbourne, VIC 3000, Australia
| | - Jason M Mackenzie
- Department of Microbiology and Immunology, University of Melbourne, Peter Doherty Institute for Infection and Immunity, Melbourne, VIC 3000, Australia
| | - Sammy Bedoui
- Department of Microbiology and Immunology, University of Melbourne, Peter Doherty Institute for Infection and Immunity, Melbourne, VIC 3000, Australia
| | - Patrick C Reading
- Department of Microbiology and Immunology, University of Melbourne, Peter Doherty Institute for Infection and Immunity, Melbourne, VIC 3000, Australia
| | - Sarah L Londrigan
- Department of Microbiology and Immunology, University of Melbourne, Peter Doherty Institute for Infection and Immunity, Melbourne, VIC 3000, Australia
| | - Karla J Helbig
- Department of Microbiology, Anatomy, Physiology and Pharmacology, La Trobe Institute for Molecular Science, La Trobe University, Bundoora, VIC 3086, Australia
| | - Adrienne G Randolph
- Department of Anesthesiology, Critical Care, and Pain Medicine, Boston Children's Hospital and Department of Anaesthesia, Harvard Medical School, Boston, MA 02115, USA; Center for Influenza Disease and Emergence Response (CIDER), Athens, GA, USA
| | - Paul G Thomas
- Department of Host-Microbe Interactions, St. Jude Children's Research Hospital, Memphis, TN 38105, USA; Center for Infectious Diseases Research, St. Jude Children's Research Hospital, Memphis, TN 38105, USA; Center for Influenza Disease and Emergence Response (CIDER), Athens, GA, USA
| | - Jianqing Xu
- Shanghai Public Health Clinical Centre and Institutes of Biomedical Sciences, Key Laboratory of Medical Molecular Virology of Ministry of Education/Health, Shanghai Medical College, Fudan University, Shanghai 201508, China
| | - Zhongfang Wang
- Department of Microbiology and Immunology, University of Melbourne, Peter Doherty Institute for Infection and Immunity, Melbourne, VIC 3000, Australia; State Key Laboratory of Respiratory Disease & National Clinical Research Center for Respiratory Disease, Guangzhou Institute of Respiratory Health, Guangzhou Medical University, Guangzhou, China.
| | - Brendon Y Chua
- Department of Microbiology and Immunology, University of Melbourne, Peter Doherty Institute for Infection and Immunity, Melbourne, VIC 3000, Australia.
| | - Katherine Kedzierska
- Department of Microbiology and Immunology, University of Melbourne, Peter Doherty Institute for Infection and Immunity, Melbourne, VIC 3000, Australia; Center for Influenza Disease and Emergence Response (CIDER), Athens, GA, USA.
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3
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Xu H, Sheng S, Luo W, Xu X, Zhang Z. Acute respiratory distress syndrome heterogeneity and the septic ARDS subgroup. Front Immunol 2023; 14:1277161. [PMID: 38035100 PMCID: PMC10682474 DOI: 10.3389/fimmu.2023.1277161] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2023] [Accepted: 10/30/2023] [Indexed: 12/02/2023] Open
Abstract
Acute respiratory distress syndrome (ARDS) is an acute diffuse inflammatory lung injury characterized by the damage of alveolar epithelial cells and pulmonary capillary endothelial cells. It is mainly manifested by non-cardiogenic pulmonary edema, resulting from intrapulmonary and extrapulmonary risk factors. ARDS is often accompanied by immune system disturbance, both locally in the lungs and systemically. As a common heterogeneous disease in critical care medicine, researchers are often faced with the failure of clinical trials. Latent class analysis had been used to compensate for poor outcomes and found that targeted treatment after subgrouping contribute to ARDS therapy. The subphenotype of ARDS caused by sepsis has garnered attention due to its refractory nature and detrimental consequences. Sepsis stands as the most predominant extrapulmonary cause of ARDS, accounting for approximately 32% of ARDS cases. Studies indicate that sepsis-induced ARDS tends to be more severe than ARDS caused by other factors, leading to poorer prognosis and higher mortality rate. This comprehensive review delves into the immunological mechanisms of sepsis-ARDS, the heterogeneity of ARDS and existing research on targeted treatments, aiming to providing mechanism understanding and exploring ideas for accurate treatment of ARDS or sepsis-ARDS.
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Affiliation(s)
- Huikang Xu
- Department of Critical Care Medicine, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
| | - Shiying Sheng
- Department of Critical Care Medicine, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
| | - Weiwei Luo
- Department of Critical Care Medicine, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
| | - Xiaofang Xu
- Department of Critical Care Medicine, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
| | - Zhaocai Zhang
- Department of Critical Care Medicine, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
- Key Laboratory of the Diagnosis and Treatment for Severe Trauma and Burn of Zhejiang Province, Hangzhou, China
- Zhejiang Province Clinical Research Center for Emergency and Critical Care Medicine, Hangzhou, China
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4
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Xiao W, Huang Q, Luo P, Tan X, Xia H, Wang S, Sun Y, Wang Z, Ma Y, Zhang J, Jin Y. Lipid metabolism of plasma-derived small extracellular vesicles in COVID-19 convalescent patients. Sci Rep 2023; 13:16642. [PMID: 37789017 PMCID: PMC10547714 DOI: 10.1038/s41598-023-43189-5] [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: 04/21/2023] [Accepted: 09/20/2023] [Indexed: 10/05/2023] Open
Abstract
The coronavirus disease 2019 (COVID-19), which affects multiple organs, is causing an unprecedented global public health crisis. Most COVID-19 patients recover gradually upon appropriate interventions. Viruses were reported to utilize the small extracellular vesicles (sEVs), containing a cell-specific cargo of proteins, lipids, and nucleic acids, to escape the attack from the host's immune system. This study aimed to examine the sEVs lipid profile of plasma of recovered COVID-19 patients (RCs). Plasma sEVs were separated from 83 RCs 3 months after discharge without underlying diseases, including 18 recovered asymptomatic patients (RAs), 32 recovered moderate patients (RMs), and 33 recovered severe and critical patients (RSs), and 19 healthy controls (HCs) by Total Exosome Isolation Kit. Lipids were extracted from sEVs and then subjected to targeted liquid chromatography-mass spectrometry. The size, concentration, and distribution of sEVs did not differ in RCs and HCs as validated by transmission electron microscopy, nanoparticle tracking analysis, and immunoblot analysis. Fifteen subclasses of 508 lipids were detected in plasma sEVs from HCs, RAs, RMs, and RSs, such as phosphatidylcholines (PCs) and diacylglycerols (DAGs), etc. Total lipid intensity displayed downregulation in RCs compared with HCs. The relative abundance of DAGs gradually dropped, whereas PCs, lysophosphatidylcholines, and sphingomyelins were higher in RCs relative to HCs, especially in RSs. 88 lipids out of 241 in sEVs of RCs were significantly different and a conspicuous increase was revealed with disease status. The sEVs lipids alternations were found to be significantly correlated with the clinical indices in RCs and HCs, suggesting that the impact of COVID-19 on lipid metabolism lingered for a long time. The lipid abnormalities bore an intimate link with glycerophospholipid metabolism and glycosylphosphatidylinositol anchor biosynthesis. Furthermore, the lipidomic analysis showed that RCs were at higher risk of developing diabetes and sustaining hepatic impairment. The abnormality of immunomodulation in RCs might still exist. The study may offer new insights into the mechanism of organ dysfunction and help identify novel therapeutic targets in the RCs.
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Affiliation(s)
- Wenjing Xiao
- Department of Respiratory and Critical Care Medicine, Hubei Province Clinical Research Center for Major Respiratory Diseases, NHC Key Laboratory of Pulmonary Diseases, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, Hubei, China
- MOE Key Laboratory of Biological Targeted Therapy, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, Hubei, China
| | - Qi Huang
- Department of Respiratory and Critical Care Medicine, Hubei Province Clinical Research Center for Major Respiratory Diseases, NHC Key Laboratory of Pulmonary Diseases, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, Hubei, China
- MOE Key Laboratory of Biological Targeted Therapy, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, Hubei, China
| | - Ping Luo
- Department of Translational Medicine Center, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, Hubei, China
| | - Xueyun Tan
- Department of Respiratory and Critical Care Medicine, Hubei Province Clinical Research Center for Major Respiratory Diseases, NHC Key Laboratory of Pulmonary Diseases, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, Hubei, China
| | - Hui Xia
- Department of Respiratory and Critical Care Medicine, Hubei Province Clinical Research Center for Major Respiratory Diseases, NHC Key Laboratory of Pulmonary Diseases, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, Hubei, China
| | - Sufei Wang
- Department of Respiratory and Critical Care Medicine, Hubei Province Clinical Research Center for Major Respiratory Diseases, NHC Key Laboratory of Pulmonary Diseases, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, Hubei, China
| | - Yice Sun
- Department of Respiratory and Critical Care Medicine, Hubei Province Clinical Research Center for Major Respiratory Diseases, NHC Key Laboratory of Pulmonary Diseases, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, Hubei, China
| | - Zhihui Wang
- Department of Scientific Research, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, Hubei, China
| | - Yanling Ma
- Department of Respiratory and Critical Care Medicine, Hubei Province Clinical Research Center for Major Respiratory Diseases, NHC Key Laboratory of Pulmonary Diseases, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, Hubei, China
| | - Jianchu Zhang
- Department of Respiratory and Critical Care Medicine, Hubei Province Clinical Research Center for Major Respiratory Diseases, NHC Key Laboratory of Pulmonary Diseases, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, Hubei, China.
- MOE Key Laboratory of Biological Targeted Therapy, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, Hubei, China.
| | - Yang Jin
- Department of Respiratory and Critical Care Medicine, Hubei Province Clinical Research Center for Major Respiratory Diseases, NHC Key Laboratory of Pulmonary Diseases, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, Hubei, China.
- MOE Key Laboratory of Biological Targeted Therapy, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, Hubei, China.
- Hubei Province Engineering Research Center for Tumor-Targeted Biochemotherapy, Wuhan, 430022, China.
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5
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Phillips AE, Wilson AS, Greer PJ, Hinton A, Culp S, Paragomi P, Pothoulakis I, Singh V, Lee PJ, Lahooti I, Whitcomb DC, Papachristou GI. Relationship of circulating levels of long-chain fatty acids to persistent organ failure in acute pancreatitis. Am J Physiol Gastrointest Liver Physiol 2023; 325:G279-G285. [PMID: 37461868 PMCID: PMC10511174 DOI: 10.1152/ajpgi.00074.2023] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/17/2023] [Revised: 06/26/2023] [Accepted: 06/27/2023] [Indexed: 08/22/2023]
Abstract
During acute pancreatitis (AP), free fatty acids (FFAs) are liberated from circulating triglycerides (TG) and injured adipocytes by pancreatic lipase. Circulating FFAs have been suspected as a source of systemic lipotoxicity in AP. However, assessment of FFAs is difficult and time-consuming, and little is known about relative levels of FFAs between patients with different severities of AP and controls. This study's aims were to assess early circulating levels of FFAs, (both saturated and unsaturated) in patients with AP vs. controls, and associations between FFA levels and AP severity. Serum samples from patients with AP were collected at enrollment (day 1 of hospital stay); serum samples were also collected from controls. FFAs including palmitic, palmitoleic, stearic, oleic, and linoleic acid were extracted and quantitated using gas chromatography separation. Severity of AP was determined by Revised Atlanta Classification. Differences in FFA levels and percentages of total FFAs were assessed between patients with AP and controls and patients with AP of different severity grades. A total of 93 patients with AP (48 female, 52%) and 29 controls (20 female, 69%) were enrolled. Of the patients with AP, 74 had mild/moderate and 19 had severe AP. Serum levels of all FFAs except stearic acid were significantly higher in patients with AP compared with controls. A strong and independent association between elevated palmitoleic acid levels and severe AP was found. Serum unsaturated FFA levels, specifically palmitoleic acid, appear to correlate with severe AP. These findings have potential clinical implications for targeted AP therapies.NEW & NOTEWORTHY Drivers of the inflammatory response in acute pancreatitis remain incompletely understood. Unsaturated fatty acids, specifically palmitoleic, appear to have an association with more severe acute pancreatitis. This finding presents a new clinical understanding of fatty acid toxicity and highlights a potential future target for treatment in severe acute pancreatitis.
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Affiliation(s)
- Anna Evans Phillips
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, United States
| | - Annette S Wilson
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, United States
| | - Phil J Greer
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, United States
| | - Alice Hinton
- Division of Biostatistics, College of Public Health, The Ohio State University, Columbus, Ohio, United States
| | - Stacey Culp
- Department of Biomedical Informatics, College of Medicine, The Ohio State University, Columbus, Ohio, United States
| | - Pedram Paragomi
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, United States
| | - Ioannis Pothoulakis
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, United States
| | - Vijay Singh
- Division of Gastroenterology, Department of Medicine, Mayo Clinic, Scottsdale, Arizona, United States
| | - Peter J Lee
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, The Ohio State University, Columbus, Ohio, United States
| | - Ila Lahooti
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, The Ohio State University, Columbus, Ohio, United States
| | - David C Whitcomb
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, United States
| | - Georgios I Papachristou
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, The Ohio State University, Columbus, Ohio, United States
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6
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Mishra P, Pandey R, Pandey N, Tripathi S, Tripathi YB. Prevention of mortality in acute lung injury induced by oleic acid: Application of polyherbal decoction (bronco T). Front Cell Dev Biol 2022; 10:1003767. [PMID: 36313556 PMCID: PMC9612945 DOI: 10.3389/fcell.2022.1003767] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2022] [Accepted: 09/27/2022] [Indexed: 11/25/2022] Open
Abstract
Acute lung injury (ALI) is a lethal respiratory disorder; directed uncontrolled inflammation, sloughing of the alveolar cells and their diffusion, and altered cardiorespiratory parameters with a global mortality rate of 40%. This study was designed to assess the preventive effect of a polyherbal decoction (Bronco T, 1.5 g/kg b. w.) on cardiorespiratory variables in oleic acid-induced ALI in rats. Oleic acid increases the level of neutrophil infiltration leading to pulmonary edema and alters the cardiorespiratory dynamics. The adult male rats were surgically cannulated and treated with intravenous oleic acid (0.38 ml/kg b. w.) to establish the ALI model. Bronco T was pre-administered orally 3 hours before oleic acid. The biophysical, histological, biochemical, and molecular effects were compared with dexamethasone (5 mg/kg b. w. i. p.). The animals were randomly divided into control, lethal, standard, and treatment groups. Respiratory frequency (RF), heart rate (HR), and mean arterial pressure (MAP) were recorded on a computerized chart recorder; arterial blood sample was collected to determine PaO2/FiO2, TNF-α, and MPO. Lipid peroxidation, superoxide dismutase, and catalase activity were evaluated to measure oxidative stress in bronchoalveolar lavage. Additionally, the pulmonary water content, COX-2 expression and histological examination were determined in the lung. A molecular docking study of the active phytoconstituent of BT obtained from HR-LCMS analysis against reported targets (IL-6, COX-2, TNFα, MPO and ENaC) of ALI was carried out. The B.T. pretreatment prevents mortality in comparison to the oleic acid group. It protects the lungs and heart from the detrimental effect of oleic acid, on par with dexamethasone. COX-2 mRNA expression was significantly down-regulated in the treatment group. The reduced level of TNF-α, MPO, SOD and catalase supported the protective effect of B.T. The in silico study revealed strong binding interaction between the phytoconstituent (Galangin 3- [galactosyl-(1–4)-rhamnoside and Beta solamarine] of BT and the reported target. The B.T. pre-administration attenuates the oleic acid-induced mortality and cardiorespiratory toxicity.
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Affiliation(s)
- Priyanka Mishra
- Department of Medicinal Chemistry, Institute of Medical Sciences, Banaras Hindu University, Varanasi, India
| | - Ratna Pandey
- Department of Physiology, Institute of Medical Sciences, Banaras Hindu University, Varanasi, India
| | - Nikhil Pandey
- Department of Medicinal Chemistry, Institute of Medical Sciences, Banaras Hindu University, Varanasi, India
| | - Suyash Tripathi
- Department of Cardiology, Institute of Medical Sciences, Banaras Hindu University, Varanasi, India
| | - Yamini Bhusan Tripathi
- Department of Medicinal Chemistry, Institute of Medical Sciences, Banaras Hindu University, Varanasi, India
- *Correspondence: Yamini Bhusan Tripathi,
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7
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Wrba L, Halbgebauer R, Roos J, Huber-Lang M, Fischer-Posovszky P. Adipose tissue: a neglected organ in the response to severe trauma? Cell Mol Life Sci 2022; 79:207. [PMID: 35338424 PMCID: PMC8956559 DOI: 10.1007/s00018-022-04234-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2021] [Revised: 02/17/2022] [Accepted: 03/07/2022] [Indexed: 01/01/2023]
Abstract
Despite the manifold recent efforts to improve patient outcomes, trauma still is a clinical and socioeconomical issue of major relevance especially in younger people. The systemic immune reaction after severe injury is characterized by a strong pro- and anti-inflammatory response. Besides its functions as energy storage depot and organ-protective cushion, adipose tissue regulates vital processes via its secretion products. However, there is little awareness of the important role of adipose tissue in regulating the posttraumatic inflammatory response. In this review, we delineate the local and systemic role of adipose tissue in trauma and outline different aspects of adipose tissue as an immunologically active modifier of inflammation and as an immune target of injured remote organs after severe trauma.
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Affiliation(s)
- Lisa Wrba
- Institute of Clinical and Experimental Trauma Immunology, Ulm University Medical Center, Ulm, Germany
- Department of Trauma, Orthopedic, Plastic and Hand Surgery, University Hospital of Augsburg, Augsburg, Germany
| | - Rebecca Halbgebauer
- Institute of Clinical and Experimental Trauma Immunology, Ulm University Medical Center, Ulm, Germany
| | - Julian Roos
- Department of Pediatrics and Adolescent Medicine, Ulm University Medical Center, Eythstr. 24, 89075, Ulm, Germany
| | - Markus Huber-Lang
- Institute of Clinical and Experimental Trauma Immunology, Ulm University Medical Center, Ulm, Germany
| | - Pamela Fischer-Posovszky
- Department of Pediatrics and Adolescent Medicine, Ulm University Medical Center, Eythstr. 24, 89075, Ulm, Germany.
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8
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Zarei M, Rahimi K, Hassanzadeh K, Abdi M, Hosseini V, Fathi A, Kakaei K. From the environment to the cells: An overview on pivotal factors which affect spreading and infection in COVID-19 pandemic. ENVIRONMENTAL RESEARCH 2021; 201:111555. [PMID: 34197816 PMCID: PMC8236413 DOI: 10.1016/j.envres.2021.111555] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/15/2021] [Revised: 05/24/2021] [Accepted: 06/16/2021] [Indexed: 05/06/2023]
Abstract
Several factors ranging from environmental risks to the genetics of the virus and that of the hosts, affect the spread of COVID-19. The impact of physicochemical variables on virus vitality and spread should be taken into account in experimental and clinical studies. Another avenue to explore is the effect of diet and its interaction with the immune system on SARS-CoV-2 infection and mortality rate. Past year have witnessed extensive studies on virus and pathophysiology of the COVID-19 disease and the cellular mechanisms of virus spreading. However, our knowledge has not reached a level where we plan an efficient therapeutic approach to prevent the virus entry to the cells or decreasing the spreading and morbidity in severe cases of disease. The risk of infection directly correlates with the control of virus spreading via droplets and aerosol transmission, as well as patient immune system response. A key goal in virus restriction and transmission rate is to understand the physicochemical structure of aerosol and droplet formation, and the parameters that affect the droplet-borne and airborne in different environmental conditions. The lifetime of droplets on different surfaces is described based on the contact angle. Hereby, we recommend regular use of high-quality face masks in high temperature and low humidity conditions. However, in humid and cold weather conditions, wearing gloves and frequently hand washing, gain a higher priority. Additionally, social distancing rules should be respected in all aforementioned conditions. We will also discuss different routes of SARS-CoV-2 entry into the cells and how multiple genetic factors play a role in the spread of the virus. Given the role of environmental and nutritional factors, we discuss and recommend some strategies to prevent the disease and protect the population against COVID-19. Since an effective vaccine can prevent the transmission of communicable diseases and abolish pandemics, we added a brief review of candidate SARS-CoV-2 vaccines.
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Affiliation(s)
- Mohammad Zarei
- Department of Food Science and Technology, School of Industrial Technology, Faculty of Applied Sciences, Universiti Teknologi MARA, 40450, Shah Alam, Selangor, Malaysia
| | - Karim Rahimi
- Department of Molecular Biology and Genetics, Gene Expression and Gene Medicine, Aarhus University, Aarhus, Denmark
| | - Kambiz Hassanzadeh
- Laboratory of Neuronal Cell Signaling, EBRI Rita Levi-Montalcini Foundation, Rome, 00161, Italy; Department of Biotechnology and Applied Clinical Sciences, University of L'Aquila, 67100, L'Aquila, Italy
| | - Mohammad Abdi
- Department of Clinical Biochemistry, Faculty of Medicine, Kurdistan University of Medical Sciences, Sanandaj, Iran
| | - Vahedeh Hosseini
- Department of Molecular Medicine and Genetics, Faculty of Medicine, Kurdistan University of Medical Sciences, Sanandaj, Iran
| | - Ali Fathi
- FUJIFILM Cellular Dynamics, Inc., Madison, WI, USA.
| | - Karim Kakaei
- Department of Chemistry, Faculty of Science, University of Maragheh, Maragheh, Iran.
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9
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Martins CA, Santos MCBD, Gonçalves-de-Albuquerque CF, Castro-Faria-Neto HC, Castro-Faria MV, Burth P, Younes-Ibrahim M. The relationship of oleic acid/albumin molar ratio and clinical outcomes in leptospirosis. Heliyon 2021; 7:e06420. [PMID: 33732938 PMCID: PMC7944043 DOI: 10.1016/j.heliyon.2021.e06420] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2020] [Revised: 01/12/2021] [Accepted: 03/01/2021] [Indexed: 11/16/2022] Open
Abstract
Human leptospirosis is an acute infectious zoonosis presenting specific lipid disorders. Previous in vitro studies showed both leptospira glycolipoprotein endotoxin, and high oleic acid levels were associated with Na/K-ATPase inhibition that is amplified by the reduction of circulating albumin levels. In this study, we aimed to investigate the relationship of oleic acid/albumin (OA/A) molar ratio and clinical outcomes in Leptospirosis. Through a prospective observational cohort study employing high-performance liquid chromatography (HPLC) we sequentially determined serum concentrations of nonesterified fatty acids (NEFA) and albumin in twenty-eight patients with severe leptospirosis since their hospital admission. Twenty patients recovered, and eight died. Data was distributed in two groups according to clinical outcomes. Oleic acid/albumin molar ratios (OA/A), initial samples, were higher than those in healthy donors. The ratio OA/A, however, persisted high in dying patients, whereas patients who survived had a reduction matching to healthy donors. Biochemical alterations suggest that cure is correlated to the reestablishment of the OA/A molar ratio, while fatal outcomes related to persisting OA/A imbalances. Analysis by receiver operating characteristic (ROC) showed the area under the curve of 0.864 and the cutoff value of 0.715 being associated with a high odds ratio. Lipid analysis from patients with leptospirosis had an acute high serum OA/A molar ratio, and sustained imbalance has a high odds ratio and strong correlation with mortality.
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Affiliation(s)
- Caroline Azevedo Martins
- Laboratório Integrado de Nefrologia, Department of Internal Medicine, Medical Sciences School, State University of Rio de Janeiro, Brazil
| | - Maria Conceição B dos Santos
- Laboratório Integrado de Nefrologia, Department of Internal Medicine, Medical Sciences School, State University of Rio de Janeiro, Brazil
| | - Cassiano Felippe Gonçalves-de-Albuquerque
- Laboratório de Imunofarmacologia, Oswaldo Cruz Institute, Fiocruz, Rio de Janeiro, Brazil
- Laboratório de Imunofarmacologia, Departamento de Bioquímica, Universidade Federal do Estado do Rio de Janeiro, Rio de Janeiro, Brazil
| | | | - Mauro Velho Castro-Faria
- Laboratório Integrado de Nefrologia, Department of Internal Medicine, Medical Sciences School, State University of Rio de Janeiro, Brazil
| | - Patricia Burth
- Laboratório de Enzimologia e Sinalização Celular, Department of Cellular and Molecular Biology, Federal Fluminense University, Niteroi, Brazil
| | - Mauricio Younes-Ibrahim
- Laboratório Integrado de Nefrologia, Department of Internal Medicine, Medical Sciences School, State University of Rio de Janeiro, Brazil
- Departamento de Medicina, Pontifícia Universidade Católica, Rio de Janeiro, Brazil
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10
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Mokra D, Mokry J. Phosphodiesterase Inhibitors in Acute Lung Injury: What Are the Perspectives? Int J Mol Sci 2021; 22:1929. [PMID: 33669167 PMCID: PMC7919656 DOI: 10.3390/ijms22041929] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2021] [Revised: 02/12/2021] [Accepted: 02/14/2021] [Indexed: 12/14/2022] Open
Abstract
Despite progress in understanding the pathophysiology of acute lung damage, currently approved treatment possibilities are limited to lung-protective ventilation, prone positioning, and supportive interventions. Various pharmacological approaches have also been tested, with neuromuscular blockers and corticosteroids considered as the most promising. However, inhibitors of phosphodiesterases (PDEs) also exert a broad spectrum of favorable effects potentially beneficial in acute lung damage. This article reviews pharmacological action and therapeutical potential of nonselective and selective PDE inhibitors and summarizes the results from available studies focused on the use of PDE inhibitors in animal models and clinical studies, including their adverse effects. The data suggest that xanthines as representatives of nonselective PDE inhibitors may reduce acute lung damage, and decrease mortality and length of hospital stay. Various (selective) PDE3, PDE4, and PDE5 inhibitors have also demonstrated stabilization of the pulmonary epithelial-endothelial barrier and reduction the sepsis- and inflammation-increased microvascular permeability, and suppression of the production of inflammatory mediators, which finally resulted in improved oxygenation and ventilatory parameters. However, the current lack of sufficient clinical evidence limits their recommendation for a broader use. A separate chapter focuses on involvement of cyclic adenosine monophosphate (cAMP) and PDE-related changes in its metabolism in association with coronavirus disease 2019 (COVID-19). The chapter illuminates perspectives of the use of PDE inhibitors as an add-on treatment based on actual experimental and clinical trials with preliminary data suggesting their potential benefit.
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Affiliation(s)
- Daniela Mokra
- Department of Physiology, Jessenius Faculty of Medicine in Martin, Comenius University in Bratislava, 03601 Martin, Slovakia
| | - Juraj Mokry
- Department of Pharmacology, Jessenius Faculty of Medicine in Martin, Comenius University in Bratislava, 03601 Martin, Slovakia;
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11
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Hagens LA, Heijnen NFL, Smit MR, Schultz MJ, Bergmans DCJJ, Schnabel RM, Bos LDJ. Systematic review of diagnostic methods for acute respiratory distress syndrome. ERJ Open Res 2021; 7:00504-2020. [PMID: 33532455 PMCID: PMC7836439 DOI: 10.1183/23120541.00504-2020] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2020] [Accepted: 09/18/2020] [Indexed: 01/10/2023] Open
Abstract
Rationale Acute respiratory distress syndrome (ARDS) is currently diagnosed by the Berlin definition, which does not include a direct measure of pulmonary oedema, endothelial permeability or pulmonary inflammation. We hypothesised that biomarkers of these processes have good diagnostic accuracy for ARDS. Methods Medline and Scopus were searched for original diagnostic studies using minimally invasive testing. Primary outcome was the diagnostic accuracy per test and was categorised by control group. The methodological quality was assessed with QUADAS-2 tool. Biomarkers that had an area under the receiver operating characteristic curve (AUROCC) of >0.75 and were studied with minimal bias against an unselected control group were considered to be promising. Results Forty-four articles were included. The median AUROCC for all evaluated tests was 0.80 (25th to 75th percentile: 0.72–0.88). The type of control group influenced the diagnostic accuracy (p=0.0095). Higher risk of bias was associated with higher diagnostic accuracy (AUROCC 0.75 for low-bias, 0.77 for intermediate-bias and 0.84 for high-bias studies; p=0.0023). Club cell protein 16 and soluble receptor for advanced glycation end-products in plasma and two panels with biomarkers of oxidative stress in breath showed good diagnostic accuracy in low-bias studies that compared ARDS patients to an unselected intensive care unit (ICU) population. Conclusion This systematic review revealed only four diagnostic tests fulfilling stringent criteria for a promising biomarker in a low-bias setting. For implementation into the clinical setting, prospective studies in a general unselected ICU population with good methodological quality are needed. Accuracy of diagnosis of acute respiratory distress syndrome (ARDS) is associated with risk of bias. There is a lack of validated diagnostic tests in an unbiased setting, emphasising the need for quality driven diagnostic research in ARDS.https://bit.ly/2GfPAvf
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Affiliation(s)
- Laura A Hagens
- Dept of Intensive Care, Amsterdam UMC, location AMC, University of Amsterdam, Amsterdam, The Netherlands
| | - Nanon F L Heijnen
- Dept of Intensive Care, Maastricht University Medical Centre+, Maastricht, The Netherlands
| | - Marry R Smit
- Dept of Intensive Care, Amsterdam UMC, location AMC, University of Amsterdam, Amsterdam, The Netherlands
| | - Marcus J Schultz
- Dept of Intensive Care, Amsterdam UMC, location AMC, University of Amsterdam, Amsterdam, The Netherlands.,Mahidol-Oxford Tropical Medicine Research Unit (MORU), Mahidol University, Bangkok, Thailand.,Nuffield Dept of Medicine, University of Oxford, Oxford, UK
| | - Dennis C J J Bergmans
- Dept of Intensive Care, Maastricht University Medical Centre+, Maastricht, The Netherlands
| | | | - Lieuwe D J Bos
- Dept of Intensive Care, Amsterdam UMC, location AMC, University of Amsterdam, Amsterdam, The Netherlands.,Dept of Respiratory Medicine, Amsterdam UMC, location AMC, University of Amsterdam, Amsterdam, The Netherlands
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12
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Dupuis J, Sirois MG, Rhéaume E, Nguyen QT, Clavet-Lanthier MÉ, Brand G, Mihalache-Avram T, Théberge-Julien G, Charpentier D, Rhainds D, Neagoe PE, Tardif JC. Colchicine reduces lung injury in experimental acute respiratory distress syndrome. PLoS One 2020; 15:e0242318. [PMID: 33264297 PMCID: PMC7710059 DOI: 10.1371/journal.pone.0242318] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2020] [Accepted: 10/30/2020] [Indexed: 12/28/2022] Open
Abstract
The acute respiratory distress syndrome (ARDS) is characterized by intense dysregulated inflammation leading to acute lung injury (ALI) and respiratory failure. There are no effective pharmacologic therapies for ARDS. Colchicine is a low-cost, widely available drug, effective in the treatment of inflammatory conditions. We studied the effects of colchicine pre-treatment on oleic acid-induced ARDS in rats. Rats were treated with colchicine (1 mg/kg) or placebo for three days prior to intravenous oleic acid-induced ALI (150 mg/kg). Four hours later they were studied and compared to a sham group. Colchicine reduced the area of histological lung injury by 61%, reduced lung edema, and markedly improved oxygenation by increasing PaO2/FiO2 from 66 ± 13 mmHg (mean ± SEM) to 246 ± 45 mmHg compared to 380 ± 18 mmHg in sham animals. Colchicine also reduced PaCO2 and respiratory acidosis. Lung neutrophil recruitment, assessed by myeloperoxidase immunostaining, was greatly increased after injury from 1.16 ± 0.19% to 8.86 ± 0.66% and significantly reduced by colchicine to 5.95 ± 1.13%. Increased lung NETosis was also reduced by therapy. Circulating leukocytosis after ALI was not reduced by colchicine therapy, but neutrophils reactivity and CD4 and CD8 cell surface expression on lymphocyte populations were restored. Colchicine reduces ALI and respiratory failure in experimental ARDS in relation with reduced lung neutrophil recruitment and reduced circulating leukocyte activation. This study supports the clinical development of colchicine for the prevention of ARDS in conditions causing ALI.
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Affiliation(s)
- Jocelyn Dupuis
- Montreal Heart Institute Research Center, Montreal, Quebec, Canada
- Department of Medicine, Faculty of Medicine, Université de Montréal, Montreal, Quebec, Canada
| | - Martin G. Sirois
- Montreal Heart Institute Research Center, Montreal, Quebec, Canada
- Department of Pharmacology and Physiology, Faculty of Medicine, Université de Montréal, Montreal, Quebec, Canada
| | - Eric Rhéaume
- Montreal Heart Institute Research Center, Montreal, Quebec, Canada
- Department of Medicine, Faculty of Medicine, Université de Montréal, Montreal, Quebec, Canada
| | - Quang T. Nguyen
- Montreal Heart Institute Research Center, Montreal, Quebec, Canada
| | | | - Genevieve Brand
- Montreal Heart Institute Research Center, Montreal, Quebec, Canada
| | | | | | | | - David Rhainds
- Montreal Heart Institute Research Center, Montreal, Quebec, Canada
| | | | - Jean-Claude Tardif
- Montreal Heart Institute Research Center, Montreal, Quebec, Canada
- Department of Medicine, Faculty of Medicine, Université de Montréal, Montreal, Quebec, Canada
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13
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Song JW, Lam SM, Fan X, Cao WJ, Wang SY, Tian H, Chua GH, Zhang C, Meng FP, Xu Z, Fu JL, Huang L, Xia P, Yang T, Zhang S, Li B, Jiang TJ, Wang R, Wang Z, Shi M, Zhang JY, Wang FS, Shui G. Omics-Driven Systems Interrogation of Metabolic Dysregulation in COVID-19 Pathogenesis. Cell Metab 2020; 32:188-202.e5. [PMID: 32610096 PMCID: PMC7311890 DOI: 10.1016/j.cmet.2020.06.016] [Citation(s) in RCA: 357] [Impact Index Per Article: 89.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/08/2020] [Revised: 05/26/2020] [Accepted: 06/19/2020] [Indexed: 01/08/2023]
Abstract
The coronavirus disease 2019 (COVID-19) pandemic presents an unprecedented threat to global public health. Herein, we utilized a combination of targeted and untargeted tandem mass spectrometry to analyze the plasma lipidome and metabolome in mild, moderate, and severe COVID-19 patients and healthy controls. A panel of 10 plasma metabolites effectively distinguished COVID-19 patients from healthy controls (AUC = 0.975). Plasma lipidome of COVID-19 resembled that of monosialodihexosyl ganglioside (GM3)-enriched exosomes, with enhanced levels of sphingomyelins (SMs) and GM3s, and reduced diacylglycerols (DAGs). Systems evaluation of metabolic dysregulation in COVID-19 was performed using multiscale embedded differential correlation network analyses. Using exosomes isolated from the same cohort, we demonstrated that exosomes of COVID-19 patients with elevating disease severity were increasingly enriched in GM3s. Our work suggests that GM3-enriched exosomes may partake in pathological processes related to COVID-19 pathogenesis and presents the largest repository on the plasma lipidome and metabolome distinct to COVID-19.
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Affiliation(s)
- Jin-Wen Song
- Treatment and Research Center for Infectious Diseases, The Fifth Medical Center of PLA General Hospital, National Clinical Research Center for Infectious Diseases, Beijing 100039, China
| | - Sin Man Lam
- State Key Laboratory of Molecular Developmental Biology, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, China; LipidALL Technologies Company Limited, Changzhou, 213022 Jiangsu Province, China
| | - Xing Fan
- Treatment and Research Center for Infectious Diseases, The Fifth Medical Center of PLA General Hospital, National Clinical Research Center for Infectious Diseases, Beijing 100039, China
| | - Wen-Jing Cao
- Treatment and Research Center for Infectious Diseases, The Fifth Medical Center of PLA General Hospital, National Clinical Research Center for Infectious Diseases, Beijing 100039, China; Department of Clinical Medicine, Bengbu Medical College, Bengbu 233000, China
| | - Si-Yu Wang
- Treatment and Research Center for Infectious Diseases, The Fifth Medical Center of PLA General Hospital, National Clinical Research Center for Infectious Diseases, Beijing 100039, China
| | - He Tian
- State Key Laboratory of Molecular Developmental Biology, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, China
| | - Gek Huey Chua
- LipidALL Technologies Company Limited, Changzhou, 213022 Jiangsu Province, China
| | - Chao Zhang
- Treatment and Research Center for Infectious Diseases, The Fifth Medical Center of PLA General Hospital, National Clinical Research Center for Infectious Diseases, Beijing 100039, China
| | - Fan-Ping Meng
- Treatment and Research Center for Infectious Diseases, The Fifth Medical Center of PLA General Hospital, National Clinical Research Center for Infectious Diseases, Beijing 100039, China
| | - Zhe Xu
- Treatment and Research Center for Infectious Diseases, The Fifth Medical Center of PLA General Hospital, National Clinical Research Center for Infectious Diseases, Beijing 100039, China
| | - Jun-Liang Fu
- Treatment and Research Center for Infectious Diseases, The Fifth Medical Center of PLA General Hospital, National Clinical Research Center for Infectious Diseases, Beijing 100039, China
| | - Lei Huang
- Treatment and Research Center for Infectious Diseases, The Fifth Medical Center of PLA General Hospital, National Clinical Research Center for Infectious Diseases, Beijing 100039, China
| | - Peng Xia
- Treatment and Research Center for Infectious Diseases, The Fifth Medical Center of PLA General Hospital, National Clinical Research Center for Infectious Diseases, Beijing 100039, China
| | - Tao Yang
- Treatment and Research Center for Infectious Diseases, The Fifth Medical Center of PLA General Hospital, National Clinical Research Center for Infectious Diseases, Beijing 100039, China
| | - Shaohua Zhang
- State Key Laboratory of Molecular Developmental Biology, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, China
| | - Bowen Li
- LipidALL Technologies Company Limited, Changzhou, 213022 Jiangsu Province, China
| | - Tian-Jun Jiang
- Treatment and Research Center for Infectious Diseases, The Fifth Medical Center of PLA General Hospital, National Clinical Research Center for Infectious Diseases, Beijing 100039, China
| | - Raoxu Wang
- State Key Laboratory of Molecular Developmental Biology, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, China
| | - Zehua Wang
- State Key Laboratory of Molecular Developmental Biology, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, China
| | - Ming Shi
- Treatment and Research Center for Infectious Diseases, The Fifth Medical Center of PLA General Hospital, National Clinical Research Center for Infectious Diseases, Beijing 100039, China
| | - Ji-Yuan Zhang
- Treatment and Research Center for Infectious Diseases, The Fifth Medical Center of PLA General Hospital, National Clinical Research Center for Infectious Diseases, Beijing 100039, China.
| | - Fu-Sheng Wang
- Treatment and Research Center for Infectious Diseases, The Fifth Medical Center of PLA General Hospital, National Clinical Research Center for Infectious Diseases, Beijing 100039, China.
| | - Guanghou Shui
- State Key Laboratory of Molecular Developmental Biology, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, China.
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14
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Al-Saiedy M, Gunasekara L, Green F, Pratt R, Chiu A, Yang A, Dennis J, Pieron C, Bjornson C, Winston B, Amrein M. Surfactant Dysfunction in ARDS and Bronchiolitis is Repaired with Cyclodextrins. Mil Med 2019; 183:207-215. [PMID: 29635617 DOI: 10.1093/milmed/usx204] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2017] [Accepted: 01/16/2018] [Indexed: 12/22/2022] Open
Abstract
Objectives Acute respiratory distress syndrome (ARDS) is caused by many factors including inhalation of toxicants, acute barotrauma, acid aspiration, and burns. Surfactant function is impaired in ARDS and acute airway injury resulting in high surface tension with alveolar and small airway collapse, edema, hypoxemia, and death. In this study, we explore the mechanisms whereby surfactant becomes dysfunctional in ARDS and bronchiolitis and its repair with a cyclodextrin drug that sequesters cholesterol. Methods We used in vitro model systems, a mouse model of ARDS, and samples from patients with acute bronchiolitis. Surface tension was measured by captive bubble surfactometry. Results Patient samples showed severe surfactant inhibition even in the absence of elevated cholesterol levels. Surfactant was also impaired in ARDS mice where the cholesterol to phospholipid ratio (W/W%) was increased. Methyl-β-cyclodextrin (MβCD) restored surfactant function to normal in both human and animal samples. Model studies showed that the inhibition of surfactant was due to both elevated cholesterol and an interaction between cholesterol and oxidized phospholipids. MβCD was also shown to have anti-inflammatory effects. Conclusions Inhaled cyclodextrins have potential for the treatment of ARDS. They could be delivered in a portable device carried in combat and used following exposure to toxic gases and fumes or shock secondary to hemorrhage and burns.
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Affiliation(s)
- Mustafa Al-Saiedy
- Snyder Institute of Chronic Diseases, University of Calgary, Calgary, Alberta, Canada T2N 4Z6
| | - Lasantha Gunasekara
- Snyder Institute of Chronic Diseases, University of Calgary, Calgary, Alberta, Canada T2N 4Z6
| | - Francis Green
- Snyder Institute of Chronic Diseases, University of Calgary, Calgary, Alberta, Canada T2N 4Z6.,SolAeroMed Inc., Calgary, Alberta, Canada T2L 2K8
| | - Ryan Pratt
- Snyder Institute of Chronic Diseases, University of Calgary, Calgary, Alberta, Canada T2N 4Z6
| | - Andrea Chiu
- Snyder Institute of Chronic Diseases, University of Calgary, Calgary, Alberta, Canada T2N 4Z6.,SolAeroMed Inc., Calgary, Alberta, Canada T2L 2K8
| | - Ailian Yang
- Snyder Institute of Chronic Diseases, University of Calgary, Calgary, Alberta, Canada T2N 4Z6
| | - John Dennis
- SolAeroMed Inc., Calgary, Alberta, Canada T2L 2K8
| | - Cora Pieron
- SolAeroMed Inc., Calgary, Alberta, Canada T2L 2K8
| | - Candice Bjornson
- Department of Pediatrics, Pediatric Cystic Fibrosis Clinic, Alberta Children's Hospital, Calgary, Alberta, Canada T3B 6A8
| | - Brent Winston
- Department of Critical Care Medicine, University of Calgary, Calgary, Alberta, Canada T2N 4Z6
| | - Matthias Amrein
- Snyder Institute of Chronic Diseases, University of Calgary, Calgary, Alberta, Canada T2N 4Z6
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15
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Free Fatty Acids' Level and Nutrition in Critically Ill Patients and Association with Outcomes: A Prospective Sub-Study of PermiT Trial. Nutrients 2019; 11:nu11020384. [PMID: 30781774 PMCID: PMC6412238 DOI: 10.3390/nu11020384] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2019] [Revised: 02/05/2019] [Accepted: 02/05/2019] [Indexed: 12/27/2022] Open
Abstract
OBJECTIVES The objectives of this study were to evaluate the clinical and nutritional correlates of high free fatty acids (FFAs) level in critically ill patients and the association with outcomes, and to study the effect of short-term caloric restriction (permissive underfeeding) on FFAs level during critical illness. PATIENTS/METHOD In this pre-planned sub-study of the PermiT (Permissive Underfeeding vs. Target Enteral Feeding in Adult Critically Ill Patients) trial, we included critically ill patients who were expected to stay for ≥14 days in the intensive care unit. We measured FFAs level on day 1, 3, 5, 7, and 14 of enrollment. Of 70 enrolled patients, 23 (32.8%) patients had high FFAs level (baseline FFAs level >0.45 mmol/L in females and >0.6 mmol/L in males). RESULTS Patients with high FFAs level were significantly older and more likely to be females and diabetics and they had lower ratio of partial pressure of oxygen to the fraction of inspired oxygen, higher creatinine, and higher total cholesterol levels than those with normal FFAs level. During the study period, patients with high FFAs level had higher blood glucose and required more insulin. On multivariable logistic regression analysis, the predictors of high baseline FFAs level were diabetes (adjusted odds ratio (aOR): 5.36; 95% confidence interval (CI): 1.56, 18.43, p = 0.008) and baseline cholesterol level (aOR, 4.29; 95% CI: 11.64, 11.19, p = 0.003). Serial levels of FFAs did not differ with time between permissive underfeeding and standard feeding groups. FFAs level was not associated with 90-day mortality (aOR: 0.49; 95% CI: 0.09, 2.60, p = 0.40). CONCLUSION We conclude that high FFAs level in critically ill patients is associated with features of metabolic syndrome and is not affected by short-term permissive underfeeding.
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16
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Xu X, Zhu Q, Niu F, Zhang R, Wang Y, Wang W, Sun D, Wang X, Wang A. A2BAR activation attenuates acute lung injury by inhibiting alveolar epithelial cell apoptosis both in vivo and in vitro. Am J Physiol Cell Physiol 2018; 315:C558-C570. [PMID: 29898376 DOI: 10.1152/ajpcell.00294.2017] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
The epithelial barrier of the lung is destroyed during acute lung injury (ALI)/acute respiratory distress syndrome (ARDS) due to the apoptosis of alveolar epithelial cells (AECs). Therefore, treatments that block AEC apoptosis might be a therapeutic strategy to ameliorate ALI. Based on recent evidence, A2B adenosine receptor (A2BAR) plays an important role in ALI in several different animal models, but its exact function in AECs has not been clarified. We investigated the role of A2BAR in AEC apoptosis in a mouse model of oleic acid (OA)-induced ALI and in hydrogen peroxide (H2O2)-induced AEC (A549 cells and MLE-12 cells) injury. Mice treated with BAY60-6583, a selective A2BAR agonist, showed lower AEC apoptosis rates than mice treated with OA. However, the role of BAY60-6583 in OA-induced ALI was attenuated by a specific blocker of A2BAR, PSB1115. A2BAR activation decreased H2O2-induced cell apoptosis in vitro, as characterized by the translocation of apoptotic proteins, the release of cytochrome c, and the activation of caspase-3 and poly (ADP ribose) polymerase 1 (PARP-1). In addition, apoptosis was required for the phosphorylation of ERK1/2, p38, and JNK. Importantly, compared with cells transfected with the A2BAR-siRNA, an ERK inhibitor or p38 inhibitor exhibited decreased apoptotic ratios and cleaved caspase-9 and cleaved PARP-1 levels, whereas the JNK inhibitor displayed increases in these parameters. In conclusion, A2BAR activation effectively attenuated OA-induced ALI by inhibiting AEC apoptosis and mitigated H2O2-induced AEC injury by suppressing the p38 and ERK1/2-mediated mitochondrial apoptosis pathway.
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Affiliation(s)
- Xiaotao Xu
- Department of Anesthesiology, Shanghai Jiao Tong University Affiliated Sixth People’s Hospital, Shanghai, China
| | - Qingwei Zhu
- Department of Neurosurgery, Shanghai Jiao Tong University Affiliated Sixth People’s Hospital, Shanghai, China
| | - Fangfang Niu
- Department of Anesthesiology, Shanghai Jiao Tong University Affiliated Sixth People’s Hospital, Shanghai, China
| | - Rong Zhang
- Department of Anesthesiology, Shanghai Jiao Tong University Affiliated Sixth People’s Hospital, Shanghai, China
| | - Yan Wang
- Department of Anesthesiology, Shanghai Jiao Tong University Affiliated Sixth People’s Hospital, Shanghai, China
| | - Wenying Wang
- Department of Anesthesiology, Shanghai Jiao Tong University Affiliated Sixth People’s Hospital, Shanghai, China
| | - Dawei Sun
- Department of Anesthesiology, Shanghai Jiao Tong University Affiliated Sixth People’s Hospital, Shanghai, China
| | - Xintao Wang
- Department of Anesthesiology, Shanghai Jiao Tong University Affiliated Sixth People’s Hospital, Shanghai, China
| | - Aizhong Wang
- Department of Anesthesiology, Shanghai Jiao Tong University Affiliated Sixth People’s Hospital, Shanghai, China
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17
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Gonçalves-de-Albuquerque CF, Rohwedder I, Silva AR, Ferreira AS, Kurz ARM, Cougoule C, Klapproth S, Eggersmann T, Silva JD, de Oliveira GP, Capelozzi VL, Schlesinger GG, Costa ER, Estrela Marins RDCE, Mócsai A, Maridonneau-Parini I, Walzog B, Macedo Rocco PR, Sperandio M, de Castro-Faria-Neto HC. The Yin and Yang of Tyrosine Kinase Inhibition During Experimental Polymicrobial Sepsis. Front Immunol 2018; 9:901. [PMID: 29760707 PMCID: PMC5936983 DOI: 10.3389/fimmu.2018.00901] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2018] [Accepted: 04/11/2018] [Indexed: 12/29/2022] Open
Abstract
Neutrophils are the first cells of our immune system to arrive at the site of inflammation. They release cytokines, e.g., chemokines, to attract further immune cells, but also actively start to phagocytose and kill pathogens. In the case of sepsis, this tightly regulated host defense mechanism can become uncontrolled and hyperactive resulting in severe organ damage. Currently, no effective therapy is available to fight sepsis; therefore, novel treatment targets that could prevent excessive inflammatory responses are warranted. Src Family tyrosine Kinases (SFK), a group of tyrosine kinases, have been shown to play a major role in regulating immune cell recruitment and host defense. Leukocytes with SFK depletion display severe spreading and migration defects along with reduced cytokine production. Thus, we investigated the effects of dasatinib, a tyrosine kinase inhibitor, with a strong inhibitory capacity on SFKs during sterile inflammation and polymicrobial sepsis in mice. We found that dasatinib-treated mice displayed diminished leukocyte adhesion and extravasation in tumor necrosis factor-α-stimulated cremaster muscle venules in vivo. In polymicrobial sepsis, sepsis severity, organ damage, and clinical outcome improved in a dose-dependent fashion pointing toward an optimal therapeutic window for dasatinib dosage during polymicrobial sepsis. Dasatinib treatment may, therefore, provide a balanced immune response by preventing an overshooting inflammatory reaction on the one side and bacterial overgrowth on the other side.
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Affiliation(s)
- Cassiano Felippe Gonçalves-de-Albuquerque
- Laboratório de Imunofarmacologia, Instituto Oswaldo Cruz, FIOCRUZ, Rio de Janeiro, Brazil.,Walter Brendel Centre, Department of Cardiovascular Physiology and Pathophysiology, Klinikum der Universität, Ludwig Maximilians University München, Munich, Germany.,Laboratório de Imunofarmacologia, Instituto Biomédico, Universidade Federal do Estado do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Ina Rohwedder
- Walter Brendel Centre, Department of Cardiovascular Physiology and Pathophysiology, Klinikum der Universität, Ludwig Maximilians University München, Munich, Germany
| | - Adriana Ribeiro Silva
- Laboratório de Imunofarmacologia, Instituto Oswaldo Cruz, FIOCRUZ, Rio de Janeiro, Brazil
| | | | - Angela R M Kurz
- Laboratório de Imunofarmacologia, Instituto Oswaldo Cruz, FIOCRUZ, Rio de Janeiro, Brazil.,Walter Brendel Centre, Department of Cardiovascular Physiology and Pathophysiology, Klinikum der Universität, Ludwig Maximilians University München, Munich, Germany
| | - Céline Cougoule
- Institut de Pharmacologie et de Biologie Structurale, IPBS, Université de Toulouse, CNRS, UPS, Toulouse, France
| | - Sarah Klapproth
- Walter Brendel Centre, Department of Cardiovascular Physiology and Pathophysiology, Klinikum der Universität, Ludwig Maximilians University München, Munich, Germany
| | - Tanja Eggersmann
- Walter Brendel Centre, Department of Cardiovascular Physiology and Pathophysiology, Klinikum der Universität, Ludwig Maximilians University München, Munich, Germany
| | - Johnatas D Silva
- Laboratory of Pulmonary Investigation, Carlos Chagas Filho Institute of Biophysics, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Gisele Pena de Oliveira
- Laboratory of Pulmonary Investigation, Carlos Chagas Filho Institute of Biophysics, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Vera Luiza Capelozzi
- Laboratório de Genômica Pulmonar, Faculdade de Medicina, Universidade de São Paulo, São Paulo, Brazil
| | | | - Edlaine Rijo Costa
- Laboratorio de Farmacologia, Carlos Chagas Filho Institute of Biophysics, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Rita de Cassia Elias Estrela Marins
- Institut de Pharmacologie et de Biologie Structurale, IPBS, Université de Toulouse, CNRS, UPS, Toulouse, France.,Laboratório de Pesquisa Clínica em DST e AIDS, Instituto Oswaldo Cruz, FIOCRUZ, Rio de Janeiro, Brazil
| | - Attila Mócsai
- MTA-SE "Lendület" Inflammation Physiology Research Group, Department of Physiology, Semmelweis University, Budapest, Hungary
| | - Isabelle Maridonneau-Parini
- Institut de Pharmacologie et de Biologie Structurale, IPBS, Université de Toulouse, CNRS, UPS, Toulouse, France
| | - Barbara Walzog
- Walter Brendel Centre, Department of Cardiovascular Physiology and Pathophysiology, Klinikum der Universität, Ludwig Maximilians University München, Munich, Germany
| | - Patricia Rieken Macedo Rocco
- Laboratory of Pulmonary Investigation, Carlos Chagas Filho Institute of Biophysics, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Markus Sperandio
- Walter Brendel Centre, Department of Cardiovascular Physiology and Pathophysiology, Klinikum der Universität, Ludwig Maximilians University München, Munich, Germany
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18
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Scaccabarozzi D, Deroost K, Lays N, Omodeo Salè F, Van den Steen PE, Taramelli D. Altered Lipid Composition of Surfactant and Lung Tissue in Murine Experimental Malaria-Associated Acute Respiratory Distress Syndrome. PLoS One 2015; 10:e0143195. [PMID: 26624290 PMCID: PMC4666673 DOI: 10.1371/journal.pone.0143195] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2015] [Accepted: 11/02/2015] [Indexed: 02/01/2023] Open
Abstract
Malaria-associated acute lung injury (MA-ALI) and its more severe form malaria-associated acute respiratory distress syndrome (MA-ARDS) are common, often fatal complications of severe malaria infections. However, little is known about their pathogenesis. In this study, biochemical alterations of the lipid composition of the lungs were investigated as possible contributing factors to the severity of murine MA-ALI/ARDS. C57BL/6J mice were infected with Plasmodium berghei NK65 to induce lethal MA-ARDS, or with Plasmodium chabaudi AS, a parasite strain that does not induce lung pathology. The lipid profile of the lung tissue from mice infected with Plasmodium berghei NK65 developing MA-ALI/ARDS, but not that from mice without lung pathology or controls, was characterized by high levels of phospholipids -mainly phosphatidylcholine- and esterified cholesterol. The high levels of polyunsaturated fatty acids and the linoleic/oleic fatty acid ratio of the latter reflect the fatty acid composition of plasma cholesterol esters. In spite of the increased total polyunsaturated fatty acid pool, which augments the relative oxidability of the lung membranes, and the presence of hemozoin, a known pro-oxidant, no excess oxidative stress was detected in the lungs of Plasmodium berghei NK65 infected mice. The bronchoalveolar lavage (BAL) fluid of Plasmodium berghei NK65 infected mice was characterized by high levels of plasma proteins. The phospholipid profile of BAL large and small aggregate fractions was also different from uninfected controls, with a significant increase in the amounts of sphingomyelin and lysophosphatidylcholine and the decrease in phosphatidylglycerol. Both the increase of proteins and lysophosphatidylcholine are known to decrease the intrinsic surface activity of surfactant. Together, these data indicate that an altered lipid composition of lung tissue and BAL fluid, partially ascribed to oedema and lipoprotein infiltration, is a characteristic feature of murine MA-ALI/ARDS and possibly contribute to lung dysfunction.
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Affiliation(s)
- Diletta Scaccabarozzi
- Dipartimento di Scienze Farmacologiche e Biomolecolari, Università degli Studi di Milano, Milan, Italy
| | - Katrien Deroost
- Rega Institute for Medical Research, KU Leuven - University of Leuven, Leuven, Belgium
| | - Natacha Lays
- Rega Institute for Medical Research, KU Leuven - University of Leuven, Leuven, Belgium
| | - Fausta Omodeo Salè
- Dipartimento di Scienze Farmacologiche e Biomolecolari, Università degli Studi di Milano, Milan, Italy
| | | | - Donatella Taramelli
- Dipartimento di Scienze Farmacologiche e Biomolecolari, Università degli Studi di Milano, Milan, Italy
- * E-mail:
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19
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Acute Respiratory Distress Syndrome: Role of Oleic Acid-Triggered Lung Injury and Inflammation. Mediators Inflamm 2015; 2015:260465. [PMID: 26640323 PMCID: PMC4660020 DOI: 10.1155/2015/260465] [Citation(s) in RCA: 58] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2015] [Accepted: 10/25/2015] [Indexed: 01/22/2023] Open
Abstract
Lung injury especially acute respiratory distress syndrome (ARDS) can be triggered by diverse stimuli, including fatty acids and microbes. ARDS affects thousands of people worldwide each year, presenting high mortality rate and having an economic impact. One of the hallmarks of lung injury is edema formation with alveoli flooding. Animal models are used to study lung injury. Oleic acid-induced lung injury is a widely used model resembling the human disease. The oleic acid has been linked to metabolic and inflammatory diseases; here we focus on lung injury. Firstly, we briefly discuss ARDS and secondly we address the mechanisms by which oleic acid triggers lung injury and inflammation.
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20
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Shi S, Gao Y, Wang L, Liu J, Yuan Z, Yu M. Elevated free fatty acid level is a risk factor for early postoperative hypoxemia after on-pump coronary artery bypass grafting: association with endothelial activation. J Cardiothorac Surg 2015; 10:122. [PMID: 26381483 PMCID: PMC4574443 DOI: 10.1186/s13019-015-0323-9] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2015] [Accepted: 09/04/2015] [Indexed: 01/09/2023] Open
Abstract
BACKGROUND We aimed to investigate the relationship between increased free fatty acid (FFA) level and early postoperative hypoxemia after coronary artery bypass grafting (CABG) with cardiopulmonary bypass (CPB). METHODS Ninety-eight consecutive patients undergoing CABG were enrolled. Early postoperative hypoxemia was defined as the lowest of the ratio of arterial oxygen tension (PaO2) to inspired oxygen fraction (FiO2) ≤ 200 mm Hg within 24 h without pleural effusion and pneumothorax. The 26 perioperative factors, serum levels of FFA and inflammatory cytokines between the hypoxemia and non-hypoxemia groups were recorded or detected using autoanalyzer and enzyme-linked immunosorbent assay, respectively. Additionally, the risk factors for early postoperative hypoxemia were evaluated using multiple logistic regression analysis. RESULTS The incidence rate of early postoperative hypoxemia was 37.8 %. Serum FFA levels were significantly higher in the hypoxemia group than in the non-hypoxemia group (P<0.001). Further, postoperative serum FFA levels were inversely related to the lowest of the ratio of PaO2/FiO2 at 24 h after CABG (r= - 0.367, P<0.001). Multiple logistic regression analysis confirmed that age, body mass index and postoperative serum FFA concentrations were independently associated with early postoperative hypoxemia. Notably, patients with hypoxemia had markedly higher serum intercellular adhesion molecule-1 (ICAM-1) levels than those without (P<0.001). Moreover, serum FFA levels at 2 h after CABG correlated positively with ICAM-1 concentrations (r=0.492, P<0.001). CONCLUSIONS Elevated FFA concentration is a risk factor for early postoperative hypoxemia after on-pump CABG, which may be closely associated with endothelial activation.
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Affiliation(s)
- Sheng Shi
- Department of Cardiovascular Surgery, Shanghai First People's Hospital, Shanghai Jiao Tong University School of Medicine, No. 100 Haining Road, Shanghai, 200080, P.R. China
| | - Yuan Gao
- Department of Cardiovascular Surgery, Taian City Central Hospital, 29 Longtan Road, Taian, Shandong Province, 271000, P.R. China
| | - Limin Wang
- Department of Cardiovascular Surgery, Shanghai First People's Hospital, Shanghai Jiao Tong University School of Medicine, No. 100 Haining Road, Shanghai, 200080, P.R. China
| | - Jian Liu
- Department of Cardiovascular Surgery, Shanghai First People's Hospital, Shanghai Jiao Tong University School of Medicine, No. 100 Haining Road, Shanghai, 200080, P.R. China
| | - Zhongxiang Yuan
- Department of Cardiovascular Surgery, Shanghai First People's Hospital, Shanghai Jiao Tong University School of Medicine, No. 100 Haining Road, Shanghai, 200080, P.R. China.
| | - Min Yu
- Department of Cardiovascular Surgery, Shanghai First People's Hospital, Shanghai Jiao Tong University School of Medicine, No. 100 Haining Road, Shanghai, 200080, P.R. China.
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21
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Boshuizen M, Leopold JH, Zakharkina T, Knobel HH, Weda H, Nijsen TME, Vink TJ, Sterk PJ, Schultz MJ, Bos LDJ. Levels of cytokines in broncho-alveolar lavage fluid, but not in plasma, are associated with levels of markers of lipid peroxidation in breath of ventilated ICU patients. J Breath Res 2015; 9:036010. [DOI: 10.1088/1752-7155/9/3/036010] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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22
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Vettorazzi S, Bode C, Dejager L, Frappart L, Shelest E, Klaßen C, Tasdogan A, Reichardt HM, Libert C, Schneider M, Weih F, Henriette Uhlenhaut N, David JP, Gräler M, Kleiman A, Tuckermann JP. Glucocorticoids limit acute lung inflammation in concert with inflammatory stimuli by induction of SphK1. Nat Commun 2015; 6:7796. [PMID: 26183376 PMCID: PMC4518295 DOI: 10.1038/ncomms8796] [Citation(s) in RCA: 106] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2014] [Accepted: 06/11/2015] [Indexed: 12/18/2022] Open
Abstract
Acute lung injury (ALI) is a severe inflammatory disease for which no specific treatment exists. As glucocorticoids have potent immunosuppressive effects, their application in ALI is currently being tested in clinical trials. However, the benefits of this type of regimen remain unclear. Here we identify a mechanism of glucocorticoid action that challenges the long-standing dogma of cytokine repression by the glucocorticoid receptor. Contrarily, synergistic gene induction of sphingosine kinase 1 (SphK1) by glucocorticoids and pro-inflammatory stimuli via the glucocorticoid receptor in macrophages increases circulating sphingosine 1-phosphate levels, which proves essential for the inhibition of inflammation. Chemical or genetic inhibition of SphK1 abrogates the therapeutic effects of glucocorticoids. Inflammatory p38 MAPK- and mitogen- and stress-activated protein kinase 1 (MSK1)-dependent pathways cooperate with glucocorticoids to upregulate SphK1 expression. Our findings support a critical role for SphK1 induction in the suppression of lung inflammation by glucocorticoids, and therefore provide rationales for effective anti-inflammatory therapies. Endothelial damage is a major component of acute lung injury pathogenesis. Here the authors show that in a mouse model of acute lung injury, glucocorticoids induce sphingosine kinase 1 production in macrophages, promoting endothelial barrier function and ameliorating the disease.
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Affiliation(s)
- Sabine Vettorazzi
- Institute of Comparative Molecular Endocrinology (CME), Ulm University, 89081 Ulm, Germany.,Leibniz Institute for Age Research - Fritz Lipmann Institute, 07745 Jena, Germany
| | - Constantin Bode
- Molecular Cancer Research Centre (MKFZ), Charité - University Medical School (CVK), 13353 Berlin, Germany
| | - Lien Dejager
- Inflammation Research Center, Mouse Genetics in Inflammation group, VIB and University Ghent, B9052 Ghent, Belgium
| | - Lucien Frappart
- Department of Pathology, Bat 10, HCL-Edouard Herriot Hospital, INSERM U590, 69437 Lyon, France
| | - Ekaterina Shelest
- Leibniz Institute for Natural Product Research and Infection Biology Hans Knöll Institute (HKI), 07745 Jena, Germany
| | - Carina Klaßen
- Institute for Cellular and Molecular Immunology, University of Göttingen Medical School, 37073 Göttingen, Germany
| | | | - Holger M Reichardt
- Institute for Cellular and Molecular Immunology, University of Göttingen Medical School, 37073 Göttingen, Germany
| | - Claude Libert
- Inflammation Research Center, Mouse Genetics in Inflammation group, VIB and University Ghent, B9052 Ghent, Belgium
| | - Marion Schneider
- Section of Experimental Anesthesiology, University Clinic Ulm, 89081 Ulm, Germany
| | - Falk Weih
- Leibniz Institute for Age Research - Fritz Lipmann Institute, 07745 Jena, Germany
| | - N Henriette Uhlenhaut
- Institute for Diabetes and Obesity, Helmholtz Zentrum München, 85748 Garching, Germany
| | - Jean-Pierre David
- Department of Osteology and Biomechanics, University Medical Center Hamburg-Eppendorf, 20246 Hamburg, Germany
| | - Markus Gräler
- Molecular Cancer Research Centre (MKFZ), Charité - University Medical School (CVK), 13353 Berlin, Germany.,Department of Anesthesiology and Intensive Care Medicine, Center for Sepsis Control and Care (CSCC) and Center for Molecular Biomedicine (CMB), University Hospital Jena, 07740 Jena, Germany
| | - Anna Kleiman
- Leibniz Institute for Age Research - Fritz Lipmann Institute, 07745 Jena, Germany.,Department of Anesthesiology and Intensive Care Medicine, Center for Sepsis Control and Care (CSCC) and Center for Molecular Biomedicine (CMB), University Hospital Jena, 07740 Jena, Germany
| | - Jan P Tuckermann
- Institute of Comparative Molecular Endocrinology (CME), Ulm University, 89081 Ulm, Germany.,Leibniz Institute for Age Research - Fritz Lipmann Institute, 07745 Jena, Germany
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23
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Gonçalves-de-Albuquerque CF, Burth P, Silva AR, de Moraes IMM, de Oliveira FMJ, Santelli RE, Freire AS, Younes-Ibrahim M, de Castro-Faria-Neto HC, de Castro-Faria MV. Na/K-ATPase assay in the intact mice lung subjected to perfusion. BMC Res Notes 2014; 7:798. [PMID: 25399325 PMCID: PMC4242599 DOI: 10.1186/1756-0500-7-798] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2014] [Accepted: 10/24/2014] [Indexed: 02/26/2023] Open
Abstract
BACKGROUND Among the characteristics of acute respiratory distress syndrome (ARDS) is edema formation and its resolution depends on pneumocyte Na/K-ATPase activity. Increased concentration of oleic acid (OA) in plasma induces lung injury by targeting Na/K-ATPase and, thus, interfering in sodium transport. FINDINGS Presently, we adapted a radioactivity-free assay to detect Na/K-ATPase activity in perfused lung mice, comparing the inhibitory effect of ouabain and OA. We managed to perfuse only the lung, avoiding the systemic loss of rubidium. Rb+ incorporation into lung was measured by inductively coupled plasma optical emission spectrometry (ICP OES) technique, after lung tissue digestion. Na/K-ATPase activity was the difference between Rb+ incorporation with or without ouabain. Lung Na/K-ATPase was completely inhibited by perfusion with ouabain. However, OA caused a partial inhibition. CONCLUSIONS In the present work the amount of incorporated Rb+ was greater than seen in our previous report, showing that the present technique is trustworthy. This new proposed assay may allow researchers to study the importance of Na/K-ATPase activity in lung pathophysiology.
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24
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Patel KS, Noel P, Singh VP. Potential influence of intravenous lipids on the outcomes of acute pancreatitis. Nutr Clin Pract 2014; 29:291-4. [PMID: 24687866 DOI: 10.1177/0884533614527774] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Parenteral nutrition (PN) has been associated with a higher rate of adverse outcomes compared with enteral feeding in patients with acute pancreatitis (AP). However, PN may be necessary when feeding via the enteral route is poorly tolerated or impossible, and PN is recommended as a second-line nutrition therapy in AP. Intravenous (IV) lipids are commonly used as a part of PN in patients with AP. While the adverse outcomes related to the use of PN in AP have commonly been attributed to infectious complications, data suggest that the unsaturated fatty acids in the triglycerides used in IV lipids may contribute to the development of organ failure. We discuss the clinical and experimental data on this issue and the alternative lipid emulsions that are being studied.
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Affiliation(s)
- Krutika S Patel
- Division of Gastroenterology, Mayo Clinic, Scottsdale, Arizona
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25
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Konrad FM, Neudeck G, Vollmer I, Ngamsri KC, Thiel M, Reutershan J. Protective effects of pentoxifylline in pulmonary inflammation are adenosine receptor A2A dependent. FASEB J 2013; 27:3524-35. [PMID: 23699177 DOI: 10.1096/fj.13-228122] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Pentoxifylline (PTX) has been shown to exert anti-inflammatory effects in experimental acute lung injury. However, results in humans were controversial. Recent in vitro studies suggested that the adenosine receptor A2A may be required for PTX to be effective. Therefore, we studied the association between A2A and PTX in a murine model of LPS-induced pulmonary inflammation. PTX treatment (10 mg/kg) reduced cellular influx (by 40%), microvascular permeability (30%), and the release of chemotactic cytokines into the alveolar space (TNF-α 60%, IL-6 60%, and CXCL2/3 53%, respectively). These protective effects were abolished completely in A2A(-/-) mice and in wild-type mice that had been treated with the selective A2A antagonist (1 mg/kg), but effects were not different in mice with altered adenosine levels. In vitro transmigration assays revealed a pivotal role of the endothelium in PTX-mediated PMN migration, with a reduction of 50% (2 mM PTX). This effect was also A2A dependent. Further, oxidative burst of human PMNs was A2A-dependently reduced by 53% after PTX treatment. In summary, PTX exhibits its anti-inflammatory effects in LPS-induced lung injury through an A2A-dependent pathway. These results will help to better understand previous conflicting data on PTX in inflammation and will direct further studies to consider the predominant role of A2A.
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Affiliation(s)
- Franziska M Konrad
- Department of Anesthesiology and Intensive Care Medicine, University of Tübingen, Hoppe-Seyler-Strasse 3, 72076 Tübingen, Germany
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26
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Gonçalves-de-Albuquerque CF, Silva AR, Burth P, de Moraes IMM, Oliveira FMDJ, Younes-Ibrahim M, dos Santos MDCB, D'Ávila H, Bozza PT, Faria Neto HCDC, Faria MVDC. Oleic acid induces lung injury in mice through activation of the ERK pathway. Mediators Inflamm 2012; 2012:956509. [PMID: 23209347 PMCID: PMC3504460 DOI: 10.1155/2012/956509] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2012] [Accepted: 10/18/2012] [Indexed: 01/06/2023] Open
Abstract
Oleic acid (OA) can induce acute lung injury in experimental models. In the present work, we used intratracheal OA injection to show augmented oedema formation, cell migration and activation, lipid mediator, and cytokine productions in the bronchoalveolar fluids of Swiss Webster mice. We also demonstrated that OA-induced pulmonary injury is dependent on ERK1/2 activation, since U0126, an inhibitor of ERK1/2 phosphorylation, blocked neutrophil migration, oedema, and lipid body formation as well as IL-6, but not IL-1β production. Using a mice strain carrying a null mutation for the TLR4 receptor, we proved that increased inflammatory parameters after OA challenges were not due to the activation of the TLR4 receptor. With OA being a Na/K-ATPase inhibitor, we suggest the possible involvement of this enzyme as an OA target triggering lung inflammation.
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Qin X, Dong W, Sharpe SM, Sheth SU, Palange DC, Rider T, Jandacek R, Tso P, Deitch EA. Role of lipase-generated free fatty acids in converting mesenteric lymph from a noncytotoxic to a cytotoxic fluid. Am J Physiol Gastrointest Liver Physiol 2012; 303:G969-78. [PMID: 22899820 PMCID: PMC3469691 DOI: 10.1152/ajpgi.00290.2012] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Recent studies have shown that mesenteric lymph plays a very important role in the development of multiple-organ dysfunction syndrome under critical conditions. Great efforts have been made to identify the biologically active molecules in the lymph. We used a trauma-hemorrhagic shock (T/HS) model and the superior mesenteric artery occlusion (SMAO) model, representing a global and a localized intestinal ischemia-reperfusion insult, respectively, to investigate the role of free fatty acids (FFAs) in the cytotoxicity of mesenteric lymph in rats. Lymph was collected before, during, and after (post) shock or SMAO. The post-T/HS and SMAO lymph, but not the sham lymph, manifested cytotoxicity for human umbilical vein endothelial cells (HUVECs). HUVEC cytotoxicity was associated with increased FFAs, especially the FFA-to-protein ratio. Addition of albumin, especially delipidated albumin, reduced this cytotoxicity. Lipase treatment of trauma-sham shock (T/SS) lymph converted it from a noncytotoxic to a cytotoxic fluid, and its toxicity correlated with the FFA-to-protein ratio in a fashion similar to that of the T/HS lymph, further suggesting that FFAs were the key components leading to HUVEC cytotoxicity. Analysis of lymph by gas chromatography revealed that the main FFAs in the post-T/HS or lipase-treated T/SS lymph were palmitic, stearic, oleic, and linoleic acids. When added to the cell culture at levels comparable to those in T/HS lymph, all these FFAs were cytotoxic, with linoleic acid being the most potent. In conclusion, this study suggests that lipase-generated FFAs are the key components resulting in the cytotoxicity of T/HS and SMAO mesenteric lymph.
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Affiliation(s)
- Xiaofa Qin
- 1Department of Surgery, New Jersey Medical School, University of Medicine and Dentistry of New Jersey, Newark, New Jersey; and
| | - Wei Dong
- 1Department of Surgery, New Jersey Medical School, University of Medicine and Dentistry of New Jersey, Newark, New Jersey; and
| | - Susan M. Sharpe
- 1Department of Surgery, New Jersey Medical School, University of Medicine and Dentistry of New Jersey, Newark, New Jersey; and
| | - Sharvil U. Sheth
- 1Department of Surgery, New Jersey Medical School, University of Medicine and Dentistry of New Jersey, Newark, New Jersey; and
| | - David C. Palange
- 1Department of Surgery, New Jersey Medical School, University of Medicine and Dentistry of New Jersey, Newark, New Jersey; and
| | - Therese Rider
- 2Department of Pathology, University of Cincinnati, Cincinnati, Ohio
| | - Ronald Jandacek
- 2Department of Pathology, University of Cincinnati, Cincinnati, Ohio
| | - Patrick Tso
- 2Department of Pathology, University of Cincinnati, Cincinnati, Ohio
| | - Edwin A. Deitch
- 1Department of Surgery, New Jersey Medical School, University of Medicine and Dentistry of New Jersey, Newark, New Jersey; and
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Acute lung injury and acute respiratory distress syndrome: experimental and clinical investigations. J Geriatr Cardiol 2012; 8:44-54. [PMID: 22783284 PMCID: PMC3390060 DOI: 10.3724/sp.j.1263.2011.00044] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2011] [Revised: 03/12/2011] [Accepted: 03/19/2011] [Indexed: 01/11/2023] Open
Abstract
Acute lung injury (ALI) or acute respiratory distress syndrome (ARDS) can be associated with various disorders. Recent investigation has involved clinical studies in collaboration with clinical investigators and pathologists on the pathogenetic mechanisms of ALI or ARDS caused by various disorders. This literature review includes a brief historical retrospective of ALI/ARDS, the neurogenic pulmonary edema due to head injury, the long-term experimental studies and clinical investigations from our laboratory, the detrimental role of NO, the risk factors, and the possible pathogenetic mechanisms as well as therapeutic regimen for ALI/ARDS.
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Su CF, Kao SJ, Chen HI. Acute respiratory distress syndrome and lung injury: Pathogenetic mechanism and therapeutic implication. World J Crit Care Med 2012; 1:50-60. [PMID: 24701402 PMCID: PMC3953859 DOI: 10.5492/wjccm.v1.i2.50] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/27/2011] [Revised: 10/14/2011] [Accepted: 03/10/2012] [Indexed: 02/06/2023] Open
Abstract
To review possible mechanisms and therapeutics for acute lung injury (ALI) and acute respiratory distress syndrome (ARDS). ALI/ARDS causes high mortality. The risk factors include head injury, intracranial disorders, sepsis, infections and others. Investigations have indicated the detrimental role of nitric oxide (NO) through the inducible NO synthase (iNOS). The possible therapeutic regimen includes extracorporeal membrane oxygenation, prone position, fluid and hemodynamic management and permissive hypercapnic acidosis etc. Other pharmacological treatments are anti-inflammatory and/or antimicrobial agents, inhalation of NO, glucocorticoids, surfactant therapy and agents facilitating lung water resolution and ion transports. β-adrenergic agonists are able to accelerate lung fluid and ion removal and to stimulate surfactant secretion. In conscious rats, regular exercise training alleviates the endotoxin-induced ALI. Propofol and N-acetylcysteine exert protective effect on the ALI induced by endotoxin. Insulin possesses anti-inflammatory effect. Pentobarbital is capable of reducing the endotoxin-induced ALI. In addition, nicotinamide or niacinamide abrogates the ALI caused by ischemia/reperfusion or endotoxemia. This review includes historical retrospective of ALI/ARDS, the neurogenic pulmonary edema due to head injury, the detrimental role of NO, the risk factors, and the possible pathogenetic mechanisms as well as therapeutic regimen for ALI/ARDS.
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Affiliation(s)
- Chain-Fa Su
- Chain-Fa Su, Department of Neurosurgery, Tzu Chi University Hospital, Hualien 97004, Taiwan, China
| | - Shang Jyh Kao
- Chain-Fa Su, Department of Neurosurgery, Tzu Chi University Hospital, Hualien 97004, Taiwan, China
| | - Hsing I Chen
- Chain-Fa Su, Department of Neurosurgery, Tzu Chi University Hospital, Hualien 97004, Taiwan, China
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Reduced plasma nonesterified fatty acid levels and the advent of an acute lung injury in mice after intravenous or enteral oleic acid administration. Mediators Inflamm 2012; 2012:601032. [PMID: 22529526 PMCID: PMC3317028 DOI: 10.1155/2012/601032] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2011] [Revised: 11/12/2011] [Accepted: 11/13/2011] [Indexed: 01/11/2023] Open
Abstract
Although exerting valuable functions in living organisms, nonesterified fatty acids (NEFAs) can be toxic to cells. Increased blood concentration of oleic acid (OLA) and other fatty acids is detected in many pathological conditions. In sepsis and leptospirosis, high plasma levels of NEFA and low albumin concentrations are correlated to the disease severity. Surprisingly, 24 h after intravenous or intragastric administration of OLA, main NEFA levels (OLA inclusive) were dose dependently decreased. However, lung injury was detected in intravenously treated mice, and highest dose killed all mice. When administered by the enteral route, OLA was not toxic in any tested conditions. Results indicate that OLA has important regulatory properties on fatty acid metabolism, possibly lowering circulating fatty acid through activation of peroxisome proliferator-activated receptors. The significant reduction in blood NEFA levels detected after OLA enteral administration can contribute to the already known health benefits brought about by unsaturated-fatty-acid-enriched diets.
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Oleic acid induces intracellular calcium mobilization, MAPK phosphorylation, superoxide production and granule release in bovine neutrophils. Biochem Biophys Res Commun 2011; 409:280-6. [DOI: 10.1016/j.bbrc.2011.04.144] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2011] [Accepted: 04/29/2011] [Indexed: 02/02/2023]
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Huang H, Pan Y, Ye Y, Gao M, Yin Z, Luo L. Dipyrithione attenuates oleic acid-induced acute lung injury. Pulm Pharmacol Ther 2011; 24:74-80. [DOI: 10.1016/j.pupt.2010.09.008] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/17/2010] [Revised: 09/10/2010] [Accepted: 09/23/2010] [Indexed: 11/27/2022]
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Dünser MW, Hasibeder WR. Sympathetic overstimulation during critical illness: adverse effects of adrenergic stress. J Intensive Care Med 2009; 24:293-316. [PMID: 19703817 DOI: 10.1177/0885066609340519] [Citation(s) in RCA: 330] [Impact Index Per Article: 22.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
The term ''adrenergic'' originates from ''adrenaline'' and describes hormones or drugs whose effects are similar to those of epinephrine. Adrenergic stress is mediated by stimulation of adrenergic receptors and activation of post-receptor pathways. Critical illness is a potent stimulus of the sympathetic nervous system. It is undisputable that the adrenergic-driven ''fight-flight response'' is a physiologically meaningful reaction allowing humans to survive during evolution. However, in critical illness an overshooting stimulation of the sympathetic nervous system may well exceed in time and scope its beneficial effects. Comparable to the overwhelming immune response during sepsis, adrenergic stress in critical illness may get out of control and cause adverse effects. Several organ systems may be affected. The heart seems to be most susceptible to sympathetic overstimulation. Detrimental effects include impaired diastolic function, tachycardia and tachyarrhythmia, myocardial ischemia, stunning, apoptosis and necrosis. Adverse catecholamine effects have been observed in other organs such as the lungs (pulmonary edema, elevated pulmonary arterial pressures), the coagulation (hypercoagulability, thrombus formation), gastrointestinal (hypoperfusion, inhibition of peristalsis), endocrinologic (decreased prolactin, thyroid and growth hormone secretion) and immune systems (immunomodulation, stimulation of bacterial growth), and metabolism (increase in cell energy expenditure, hyperglycemia, catabolism, lipolysis, hyperlactatemia, electrolyte changes), bone marrow (anemia), and skeletal muscles (apoptosis). Potential therapeutic options to reduce excessive adrenergic stress comprise temperature and heart rate control, adequate use of sedative/analgesic drugs, and aiming for reasonable cardiovascular targets, adequate fluid therapy, use of levosimendan, hydrocortisone or supplementary arginine vasopressin.
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Affiliation(s)
- Martin W Dünser
- Department of Anaesthesiology and Critical Care Medicine, Innsbruck Medical University, Anichstrasse, Innsbruck, Austria.
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Li X, Liu Y, Wang Q, Zhu Y, Lv X, Liu J. A novel and stable "two-hit" acute lung injury model induced by oleic acid in piglets. Acta Vet Scand 2009; 51:17. [PMID: 19331663 PMCID: PMC2673213 DOI: 10.1186/1751-0147-51-17] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2008] [Accepted: 03/30/2009] [Indexed: 11/28/2022] Open
Abstract
Background Children are susceptible to pulmonary injury, and acute lung injury (ALI) often results in a high mortality and financial cost in pediatric patients. Evidence has showed that oleic acid (OA) plays an important role in ALI. Therefore, it has special significance to study ALI in pediatric patients by using OA-induced animal models. Unfortunately, the animal model hs a high mortality due to hemodynamic instability. The aim of this study was to establish a novel hemodynamically stable OA-induced ALI model in piglets with two hits. Methods 18 Chinese mini-piglets were randomized into three groups: group C (received saline-ethanol solution), group T (received OA-ethanol solution in routine administration manner) and group H (received OA-ethanol solution in two-hit manner). Hemodynamic and pulmonary function data were measured. Histopathological assessments were performed. Results Two piglets in group T died of radical decline of systemic blood pressure. Group T showed more drastic hemodynamic changes than group H especially during the period of 5 to 30 minutes after OA administration. Both Group T and group H all produced severe lung injury, while group C had no significant pathologic changes. OA-induced hypotension might be caused by pulmonary hypertension rather than comprised left ventricular function. Conclusion OA leads to severe pulmonary hypertension which results in hemodynamic fluctuation in OA-induced ALI model. It is the first report on hemodynamic stable ALI animal model in piglets using two-hit method. The two-hit ALI animal model fulfils the ALI criteria and has the following characteristics: hemodynamic stability, stable damage to gas exchange and comparability with pediatric patients in body weight and corresponding age. The two-hit ALI animal model can be used to study the basic mechanism and the therapeutic strategies for pediatric ALI.
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Recombinant human activated protein C ameliorates oleic acid-induced lung injury in awake sheep. CRITICAL CARE : THE OFFICIAL JOURNAL OF THE CRITICAL CARE FORUM 2008; 12:R146. [PMID: 19021914 PMCID: PMC2646309 DOI: 10.1186/cc7128] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/07/2008] [Revised: 11/07/2008] [Accepted: 11/20/2008] [Indexed: 01/18/2023]
Abstract
INTRODUCTION Acute lung injury (ALI) may arise both after sepsis and non-septic inflammatory conditions and is often associated with the release of fatty acids, including oleic acid (OA). Infusion of OA has been used extensively to mimic ALI. Recent research has revealed that intravenously administered recombinant human activated protein C (rhAPC) is able to counteract ALI. Our aim was to find out whether rhAPC dampens OA-induced ALI in sheep. METHODS Twenty-two yearling sheep underwent instrumentation. After 2 days of recovery, animals were randomly assigned to one of three groups: (a) an OA+rhAPC group (n = 8) receiving OA 0.06 mL/kg infused over the course of 30 minutes in parallel with an intravenous infusion of rhAPC 24 mg/kg per hour over the course of 2 hours, (b) an OA group (n = 8) receiving OA as above, or (c) a sham-operated group (n = 6). After 2 hours, sheep were sacrificed. Hemodynamics was assessed by catheters in the pulmonary artery and the aorta, and extravascular lung water index (EVLWI) was determined with the single transpulmonary thermodilution technique. Gas exchange was evaluated at baseline and at cessation of the experiment. Data were analyzed by analysis of variance; a P value of less than 0.05 was regarded as statistically significant. RESULTS OA induced profound hypoxemia, increased right atrial and pulmonary artery pressures and EVLWI markedly, and decreased cardiac index. rhAPC counteracted the OA-induced changes in EVLWI and arterial oxygenation and reduced the OA-induced increments in right atrial and pulmonary artery pressures. CONCLUSIONS In ovine OA-induced lung injury, rhAPC dampens the increase in pulmonary artery pressure and counteracts the development of lung edema and the derangement of arterial oxygenation.
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Liu DD, Hsieh NK, Chen HI. Histopathological and biochemical changes following fat embolism with administration of corn oil micelles. ACTA ACUST UNITED AC 2008; 90:1517-21. [DOI: 10.1302/0301-620x.90b11.20761] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Several experimental models have been used to produce intravascular fat embolism. We have developed a simple technique to induce fat embolism using corn oil emulsified with distilled water to form fatty micelles. Fat embolism was produced by intravenous administration of these fatty micelles in anaesthetised rats, causing alveolar oedema, haemorrhage and increased lung weight. Histopathological examination revealed fatty droplets and fibrin thrombi in the lung, kidney and brain. The arteriolar lumen was filled with fatty deposits. Following fat embolism, hypoxia and hypercapnia occurred. The plasma phospholipase A2, nitrate/nitrite, methylguidanidine and proinflammatory cytokines were significantly increased. Mass spectrometry showed that the main ingredient of corn oil was oleic acid. This simple technique may be applied as a new animal model for the investigation of the mechanisms involved in the fat embolism syndrome.
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Affiliation(s)
- D. D. Liu
- Department of Dentistry China Medical University Hospital, 2 Yuh-Der Road, Taichung 40447, Taiwan
| | - N.-K. Hsieh
- Department of Family Medicine Taoyuan General Hospital, 1492, Jhongshan Road, Taoyuan City, Taoyuan County 33004, Taiwan
| | - H. I. Chen
- Institute of Integrative Physiology and Clinical Sciences, Tzu Chi University, 701, Section 3, Jhongyang Road, Hualien 97004, Taiwan
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Inhaled milrinone attenuates experimental acute lung injury. Intensive Care Med 2008; 35:171-8. [PMID: 18972099 DOI: 10.1007/s00134-008-1344-9] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2008] [Accepted: 10/11/2008] [Indexed: 12/14/2022]
Abstract
PURPOSE To test whether inhalation of the phosphodiesterase 3 inhibitor milrinone may attenuate experimental acute lung injury (ALI). METHODS In rats, ALI was induced by infusion of oleic acid (OA). After 30 min, milrinone was inhaled either as single dose, or repeatedly in 30 min intervals. In mice, ALI was induced by intratracheal instillation of hydrochloric acid, followed by a single milrinone inhalation. RESULTS Four hours after OA infusion, ALI was evident as lung inflammation, protein-rich edema and hypoxemia. A single inhalation of milrinone attenuated the increase in lung wet-to-dry weight ratio and myeloperoxidase activity, and reduced protein concentration, neutrophil counts and TNF-alpha levels in bronchoalveolar lavage. This effect was further pronounced when milrinone was repeatedly inhaled. In mice with acid-induced ALI, milrinone attenuated hypoxemia and prevented the increase in lung myeloperoxidase activity. CONCLUSIONS Inhalation of aerosolized milrinone may present a novel therapeutic strategy for the treatment of ALI.
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Singer P, Shapiro H, Theilla M, Anbar R, Singer J, Cohen J. Anti-inflammatory properties of omega-3 fatty acids in critical illness: novel mechanisms and an integrative perspective. Intensive Care Med 2008; 34:1580-92. [PMID: 18461305 DOI: 10.1007/s00134-008-1142-4] [Citation(s) in RCA: 158] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2007] [Accepted: 04/19/2008] [Indexed: 02/07/2023]
Abstract
INTRODUCTION Fish oil-based nutrition is protective in severe critical care conditions. Regulation of the activity of transcription factor NF-kappaB is an important therapeutic effect of the major omega-3 fatty acids in fish oil, eicosapentaenoic and docosahexaenoic acid (EPA and DHA). METHODS AND RESULTS Using the articles obtained by a Pubmed research, this article reviews three aspects of NF-kappaB/inflammatory inhibition by fish oil. (1) Inhibition of the NF-kappaB pathway at several subsequent steps: extracellular, free omega-3 inhibits the activation of the Toll-like receptor 4 by endotoxin and free saturated fatty acids. In addition, EPA/DHA blocks the signaling cascade between Toll-like/cytokine receptors and the activator of NF-kappaB, IKK. Oxidized omega-3 also interferes with the initiation of transcription by NF-kappaB. (2) The altered profile of lipid mediators generated during inflammation, with production of the newly identified, DHA-derived inflammation-resolving mediator classes (in addition to the formation of less pro-inflammatory eicosanoids from EPA). Resolvin D1 and Protectin D1 are potent, endogenous, DHA-derived lipid mediators that attenuate neutrophil migration and tissue injury in peritonitis and ischemia-reperfusion injury. Their production is increased in the later stages of an inflammatory response, at which time they enhance the removal of neutrophils. (3) Modulation of vagal tone with potential anti-inflammatory effects: vagal fibers innervating the viscera down-regulate inflammation by activating nicotinic receptors upon infiltrating and resident macrophages. Stimulation of the efferent vagus is therapeutic in experimental septic shock. Fish oil supplementation increases vagal tone following myocardial infarction and in experimental human endotoxinemia. CONCLUSION It remains to be shown whether these pleiotropic actions of EPA/DHA contribute to fish oil's therapeutic effect in sepsis.
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Affiliation(s)
- Pierre Singer
- Department of General Intensive Care, Institute for Nutrition Research, Petach Tikva, Israel.
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Protective effects of propofol on acute lung injury induced by oleic acid in conscious rats. Crit Care Med 2008; 36:1214-21. [PMID: 18379248 DOI: 10.1097/ccm.0b013e31816a0607] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
OBJECTIVES Oleic acid has been used to induce acute lung injury (ALI) in animals. In patients with acute respiratory distress syndrome (ARDS), the blood level of oleic acid was increased. The mechanism and therapeutic regimen of ARDS and oleic acid-induced ALI remain undefined. In the present study, we investigated the oleic acid-induced changes in lung variables for the measure of ALI, inflammatory mediators, and neutrophil-derived substances. We evaluated the effects of pretreatment and posttreatment with propofol. DESIGN Randomized, controlled animal study. SETTING University research laboratory. SUBJECTS Fifty adult male Sprague-Dawley rats weighing 250-300 g. INTERVENTIONS We employed a conscious and unrestrained rat model. Oleic acid at a dose of 100 mg/kg was administered intravenously. Propofol (30 mg/kg) was given by intravenous infusion (6 mg/kg/min for 5 mins) 30 mins before (pretreatment) and 30 mins after (posttreatment) oleic acid. MEASUREMENTS AND MAIN RESULTS We monitored the arterial pressure, heart rate, and blood gas. The lung weight changes, exhaled nitric oxide, protein concentration in bronchoalveolar lavage, and Evans blue content in lung tissue were determined. The plasma nitrate/nitrite, methylguanidine, cytokines (tumor necrosis factor-alpha, interleukin-1beta, interleukin-6, and interleukin-10), neutrophil elastase, myeloperoxidase, malondialdehyde, and sodium- and potassium-activated adenosine triphosphatase (Na+-K+-ATPase) were detected. Histopathological examination of the lung was performed. Oleic acid caused systemic hypotension and severe ALI as evidenced by the increases in the extent of ALI, impairment of pulmonary functions (blood gas variables), and lung pathology. In addition, oleic acid significantly increased inflammatory mediators and neutrophil-derived factors but depressed Na+-K+-ATPase. The inducible nitric oxide synthase was up-regulated. Pre- or posttreatment with propofol was capable of reversing the oleic acid-induced changes and attenuating the extent of ALI. CONCLUSIONS Oleic acid resulted in sepsis-like responses including ALI, inflammatory reaction, and increased neutrophil-derived factors. It depressed the Na+-K+-ATPase activity but up-regulated inducible nitric oxide synthase. Treatment with propofol abrogated or reversed the oleic acid-induced changes.
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Tasaka S, Amaya F, Hashimoto S, Ishizaka A. Roles of oxidants and redox signaling in the pathogenesis of acute respiratory distress syndrome. Antioxid Redox Signal 2008; 10:739-53. [PMID: 18179359 DOI: 10.1089/ars.2007.1940] [Citation(s) in RCA: 124] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
The acute respiratory distress syndrome (ARDS) is a disease process that is characterized by diffuse inflammation in the lung parenchyma and resultant permeability edema. The involvement of inflammatory mediators in ARDS has been the subject of intense investigation, and oxidant-mediated tissue injury is likely to be important in the pathogenesis of ARDS. In response to various inflammatory stimuli, lung endothelial cells, alveolar cells, and airway epithelial cells, as well as alveolar macrophages, produce reactive oxygen species (ROS) and reactive nitrogen species (RNS). In addition, the therapeutic administration of oxygen can enhance the production of these toxic species. As the antioxidant defense system, various enzymes and low-molecular weight scavengers are present in the lung tissue and epithelial lining fluid. In addition to their contribution to tissue damage, ROS and RNS serve as signaling molecules for the evolution and perpetuation of the inflammatory process, which involves genetic regulation. The pattern of gene expression mediated by oxidant-sensitive transcription factors is a crucial component of the machinery that determines cellular responses to oxidative stress. This review summarizes the recent progress concerning how redox status can be modulated and how it regulates gene transcription during the development of ARDS, as well as the therapeutic implications.
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Affiliation(s)
- Sadatomo Tasaka
- Division of Pulmonary Medicine, Keio University School of Medicine, Tokyo, Japan.
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Cepkova M, Matthay MA. Pharmacotherapy of acute lung injury and the acute respiratory distress syndrome. J Intensive Care Med 2006; 21:119-43. [PMID: 16672636 PMCID: PMC2765330 DOI: 10.1177/0885066606287045] [Citation(s) in RCA: 140] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Acute lung injury and the acute respiratory distress syndrome are common syndromes with a high mortality rate that affect both medical and surgical patients. Better understanding of the pathophysiology of acute lung injury and the acute respiratory distress syndrome and advances in supportive care and mechanical ventilation have led to improved clinical outcomes since the syndrome was first described in 1967. Although several promising pharmacological therapies, including surfactant, nitric oxide, glucocorticoids and lysofylline, have been studied in patients with acute lung injury and the acute respiratory distress syndrome, none of these pharmacological treatments reduced mortality. This article provides an overview of pharmacological therapies of acute lung injury and the acute respiratory distress syndrome tested in clinical trials and current recommendations for their use as well as a discussion of potential future pharmacological therapies including beta(2)-adrenergic agonist therapy, keratinocyte growth factor, and activated protein C.
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Affiliation(s)
- Magda Cepkova
- Cardiovascular Research Institute, University of California San Francisco, CA 94143-0130, USA.
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Neidlinger NA, Larkin SK, Bhagat A, Victorino GP, Kuypers FA. Hydrolysis of phosphatidylserine-exposing red blood cells by secretory phospholipase A2 generates lysophosphatidic acid and results in vascular dysfunction. J Biol Chem 2005; 281:775-81. [PMID: 16278219 DOI: 10.1074/jbc.m505790200] [Citation(s) in RCA: 84] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
Abstract
Secretory phospholipase A(2) (sPLA(2)) type IIa, elevated in inflammation, breaks down membrane phospholipids and generates arachidonic acid. We hypothesized that sPLA(2) will hydrolyze red blood cells that expose phosphatidylserine (PS) and generate lysophosphatidic acid (LPA) from phosphatidic acid that is elevated in PS-exposing red blood cells. In turn, LPA, a powerful lipid mediator, could affect vascular endothelial cell function. Although normal red blood cells were not affected by sPLA(2), at levels of sPLA(2) observed under inflammatory conditions (100 ng/ml) PS-exposing red blood cells hemolyzed and generated LPA (1.2 nM/10(8) RBC). When endothelial cell monolayers were incubated in vitro with LPA, a loss of confluence was noted. Moreover, a dose-dependent increase in hydraulic conductivity was identified in rat mesenteric venules in vivo with 5 microM LPA, and the combination of PS-exposing red blood cells with PLA(2) caused a similar increase in permeability. In the presence of N-palmitoyl L-serine phosphoric acid, a competitive inhibitor for the endothelial LPA receptor, loss of confluence in vitro and the hydraulic permeability caused by 5 microM LPA in vivo were abolished. The present study demonstrates that increased sPLA(2) activity in inflammation in the presence of cells that have lost their membrane phospholipid asymmetry can lead to LPA-mediated endothelial dysfunction and loss of vascular integrity.
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Affiliation(s)
- Nikole A Neidlinger
- Department of Surgery, University of California, San Francisco-East Bay, Oakland, 94602 USA.
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Pawlik MT, Schreyer AG, Ittner KP, Selig C, Gruber M, Feuerbach S, Taeger K. Early treatment with pentoxifylline reduces lung injury induced by acid aspiration in rats. Chest 2005; 127:613-21. [PMID: 15706004 DOI: 10.1378/chest.127.2.613] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
STUDY OBJECTIVES To evaluate the effect of pentoxifylline treatment on gas exchange and mortality immediately after bilateral instillation of hydrochloric acid. DESIGN Randomized, prospective, placebo-controlled trial. SETTING Animal laboratory of a university hospital. SUBJECTS Twenty-four, adult, male Sprague-Dawley rats. METHODS Sevoflurane-anesthetized rats (n = 12 in each group) underwent tracheostomy and insertion of a cannula into a hind paw vein and the left carotid artery. All animals received volume-controlled mechanical ventilation (zero positive end-expiratory pressure; fraction of inspired oxygen, 0.21). Acute lung injury was induced by instillation of 0.4 mL/kg 0.1 mol/L hydrochloric acid. The animals were randomized into two groups. The pentoxifylline group (n = 12) received a bolus of 20 mg/kg IV pentoxifylline after aspiration, followed by a continuous infusion of 6 mg/kg/h. The placebo group (n = 12) received an equivalent volume of saline solution. Arterial blood samples were collected for blood gas analysis 15 min and 0 min prior to aspiration and 30, 90, 180, 270, and 360 min after aspiration. Hemodynamic parameters, temperature, and ECG were recorded simultaneously. The primary end point was 6 h after aspiration. All surviving rats were killed by IV administration of pentobarbital. To assess morphologic changes due to lung injury, all animals underwent CT in inspiratory hold at the end of the experiment. MEASUREMENTS AND RESULTS No difference in baseline measurements was observed. In pentoxifylline-treated rats, Pao(2) was significantly increased (p < 0.05) at 30, 90, 180, 270, and 360 min. Mortality at 6 h was 17% in the pentoxifylline group vs 67% in the placebo group. Placebo-treated rats showed significant abnormalities in CT lung scans compared with the pentoxifylline group. CONCLUSIONS Acid aspiration impairs gas exchange and induces hypotension. Pentoxifylline administration shortly after acid instillation results in significant alleviation of impaired oxygenation, stabilization of BP with higher heart rates, and improved survival after 6 h.
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Affiliation(s)
- Michael T Pawlik
- Department of Anesthesiology, University of Regensburg, Franz-Josef-Strauss-Allee 6, D-93042 Regensburg, Germany.
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Abstract
Lisofylline (LSF), a synthetic modified methylxanthine, was originally designed and tested as an agent to reduce mortality during serious infections associated with cancer chemotherapy. Experimental studies and several clinical trials showed that LSF inhibited the generation of phosphatidic acid and free fatty acids. LSF also blocked the release of pro-inflammatory cytokines in oxidative tissue injury, in response to cancer chemotherapy and in experimental sepsis. Recent research has revealed a new potential to extend the therapeutic application of LSF especially for diabetes mellitus. These new studies demonstrate multiple actions of LSF in the regulation of immune cell function and autoimmune response by inhibition of IL-12 signalling and cytokine production. Supporting the new potential for LSF is the discovery of beneficial effects in protecting pancreatic beta cells and in preventing autoimmunity. In this article, these new observations about LSF are reviewed and a strategy proposed for using this compound in new clinical applications. LSF may, thus, have therapeutic value in the prevention of autoimmune disorders, including Type 1 diabetes, and autoimmune recurrence following islet transplantation, and in preservation of beta cell functional mass during islet isolation.
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Affiliation(s)
- Zandong Yang
- Department of Internal Medicine, Diabetes and Hormone Center of Excellence, Division of Endocrinology and Metabolism, University of Virginia, P.O. Box 801413, Charlottesville, VA 22908, USA.
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. AV, . MM, . ES, . NR, . SK, . AR, . MA. Future Drugs for Treatment of Acute Respiratory Distress Syndrome. INT J PHARMACOL 2004. [DOI: 10.3923/ijp.2005.9.16] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Vadász I, Morty RE, Kohstall MG, Olschewski A, Grimminger F, Seeger W, Ghofrani HA. Oleic acid inhibits alveolar fluid reabsorption: a role in acute respiratory distress syndrome? Am J Respir Crit Care Med 2004; 171:469-79. [PMID: 15542790 DOI: 10.1164/rccm.200407-954oc] [Citation(s) in RCA: 60] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Levels of oleic acid (OA) are elevated in plasma and bronchoalveolar lavage fluids of patients with acute respiratory distress syndrome (ARDS). OA is also widely used to provoke edema, by unknown mechanisms, in experimental models of ARDS. We investigated the impact of intravascularly applied OA on epithelial lining fluid balance. OA (25 microM) dramatically blocked active transepithelial (22)Na(+) transport (by 92%) in an isolated, ventilated, and perfused rabbit lung model, provoking alveolar edema, assessed by increases in lung weight and epithelial lining fluid volume. OA did not alter epithelial permeability, measured by [(3)H]mannitol and fluorescently labeled albumin flux, but did increase endothelial permeability, assessed by capillary filtration coefficient. In A549 cells, OA completely blocked amiloride-sensitive sodium currents measured by patch clamp, and also largely abrogated ouabain-sensitive Na(+),K(+)-ATPase-mediated (86)Rb(+) uptake. Although OA did not alter epithelial sodium channel or Na(+),K(+)-ATPase surface expression, it covalently associated with both molecules and directly, dramatically, and dose-dependently inhibited the catalytic activity of purified Na(+),K(+)-ATPase. Therefore, OA impaired the two essential transepithelial active sodium transport mechanisms of the lung, and could thus promote alveolar edema formation and prevent edema resolution, thereby contributing to the development of ARDS.
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Affiliation(s)
- István Vadász
- University of Giessen Lung Center, Justus Liebig University, Klinikstrasse 36, D-35392 Giessen, Germany
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Adhikari N, Burns KEA, Meade MO. Pharmacologic therapies for adults with acute lung injury and acute respiratory distress syndrome. Cochrane Database Syst Rev 2004; 2004:CD004477. [PMID: 15495113 PMCID: PMC6517021 DOI: 10.1002/14651858.cd004477.pub2] [Citation(s) in RCA: 50] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
BACKGROUND Multiple pharmacologic treatments have been studied for acute lung injury (ALI) and acute respiratory distress syndrome (ARDS). OBJECTIVES Our objective was to determine the effects of pharmacologic treatments on clinical outcomes in adults with ALI or ARDS. SEARCH STRATEGY We searched OVID versions of CENTRAL (The Cochrane Library Issue 3, 2003), MEDLINE (1966 to week 2, January 2004), EMBASE (1980 to week 4, 2004), CINAHL (1982 to week 2, January 2004), and HEALTHSTAR (1995 to December 2003); proceedings from four conferences (1994 to 2003); and bibliographies of review articles and included studies. SELECTION CRITERIA Randomized controlled trials of pharmacologic treatments compared to no therapy or placebo for established ALI or ARDS in adults admitted to an intensive care unit, with measurement of early mortality (primary outcome), late mortality, duration of mechanical ventilation, ventilator-free days to day 28, or adverse events. We excluded trials of nitric oxide, partial liquid ventilation, fluid and nutritional interventions, oxygen, and trials in other populations reporting outcomes in subgroups of patients with ALI or ARDS. DATA COLLECTION AND ANALYSIS Two reviewers independently screened titles and abstracts, rated studies for inclusion, extracted data and assessed methodologic quality of included studies. Disagreements were resolved by consensus in consultation with a third reviewer. For each pharmacologic therapy, we quantitatively pooled the results of studies using random effects models where permitted by the available data. We contacted study authors when clarification of the primary outcome was required. MAIN RESULTS Thirty three trials randomizing 3272 patients met our inclusion criteria. Pooling of results showed no effect on early mortality of prostaglandin E1 (seven trials randomizing 697 patients; relative risk [RR] 0.95, 95% confidence interval [CI] 0.77 to 1.17), N-acetylcysteine (five trials randomizing 239 patients; RR 0.89, 95% CI 0.65 to 1.21), early high-dose corticosteroids (two trials randomizing 187 patients; RR 1.12, 95% CI 0.72 to 1.74), or surfactant (nine trials randomizing 1441 patients; RR 0.93, 95% CI 0.77 to 1.12). Two interventions were beneficial in single small trials; corticosteroids given for late phase ARDS reduced hospital mortality (24 patients; RR 0.20, 95% CI 0.05 to 0.81), and pentoxifylline reduced one-month mortality (RR 0.67, 95% CI 0.47 to 0.95) in 30 patients with metastatic cancer and ARDS. Individual trials of nine additional interventions failed to show a beneficial effect on prespecified outcomes. REVIEWERS' CONCLUSIONS Effective pharmacotherapy for ALI and ARDS is extremely limited, with insufficient evidence to support any specific intervention.
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Affiliation(s)
- N Adhikari
- Critical Care Medicine and Medicine, Sunnybrook and Women's College Health Centre, 2075 Bayview Avenue, B7.04a, Toronto, M4N 3M5, Ontario, Canada.
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Bolick DT, Hatley ME, Srinivasan S, Hedrick CC, Nadler JL. Lisofylline, a novel antiinflammatory compound, protects mesangial cells from hyperglycemia- and angiotensin II-mediated extracellular matrix deposition. Endocrinology 2003; 144:5227-31. [PMID: 12960000 DOI: 10.1210/en.2003-0739] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Chronic elevated glucose levels and activation of the renal renin-angiotensin system have been implicated in the pathogenesis of diabetic nephropathy. We tested the ability of lisofylline (LSF), a novel antiinflammatory compound, to prevent extracellular matrix (ECM) accumulation and growth factor production by human mesangial cells (HMCs) cultured in chronic elevated glucose (HG) or angiotensin II (AngII). HMCs were cultured in normal glucose (NG) (5.5 mm) and in HG (25 mm) for 7 d or with 10-7 m AngII for 4 h with or without LSF. Levels of the ECM protein fibronectin and TGF-beta in media were shown to increase in HG compared with NG. LSF decreased HG-induced fibronectin and TGF-beta production to control levels. Increased expression of collagen type IV and laminin was observed in AngII-cultured HMCs. LSF protected HMCs from the AngII induction of these key matrix proteins. cAMP-responsive binding element phosphorylation was significantly higher in both HG and AngII-cultured HMCs. LSF reduced phosphorylation of both cAMP-responsive binding element and p38 MAPK compared with control. These data demonstrate that LSF protects HMCs from HG- and AngII-mediated ECM deposition by the reduction of matrix protein secretion possibly through regulation of TGF-beta production and modulation of the p38 MAPK pathway. These results suggest that LSF may provide therapeutic benefit for prevention or treatment of diabetic nephropathy.
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Affiliation(s)
- David T Bolick
- Division of Endocrinology and Metabolism, University of Virginia Medical Center, Charlottesville, Virginia 22908-1405, USA
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Mayer K, Fegbeutel C, Hattar K, Sibelius U, Krämer HJ, Heuer KU, Temmesfeld-Wollbrück B, Gokorsch S, Grimminger F, Seeger W. Omega-3 vs. omega-6 lipid emulsions exert differential influence on neutrophils in septic shock patients: impact on plasma fatty acids and lipid mediator generation. Intensive Care Med 2003; 29:1472-81. [PMID: 12897994 PMCID: PMC7187949 DOI: 10.1007/s00134-003-1900-2] [Citation(s) in RCA: 144] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2002] [Accepted: 06/03/2003] [Indexed: 11/30/2022]
Abstract
OBJECTIVE To compare the effects of a conventional omega-6 lipid infusion and a fish oil based (omega-3) lipid infusion for parenteral nutrition on neutrophil function, lipid mediators, and plasma free fatty acids. DESIGN AND SETTING Open-label, randomized, pilot study in a university hospital medical intensive care unit and experimental laboratory. PATIENTS AND PARTICIPANTS Ten patients with septic shock and eight healthy controls. INTERVENTIONS Patients (five per group) requiring parenteral nutrition received intravenously either a omega-3 or a omega-6 lipid emulsion for a 10-day period. MEASUREMENTS AND RESULTS At baseline levels of plasma free fatty acids were elevated several-fold, including high concentrations of the omega-6 lipid precursor arachidonic acid (AA). Neutrophils isolated from septic patients displayed markedly reduced responsiveness to ex vivo stimulation, including lipid mediator generation [leukotrienes (LT), PAF], respiratory burst, and phosphoinositide hydrolysis signaling. Under the omega-6 lipid infusion regimen abnormalities in plasma free fatty acids and impairment of neutrophil functions persisted or worsened. In contrast, a rapid switch in the plasma free fatty acid fraction to predominance of the omega-3 acids eicosapentaenoic acid and docosahexaenoic acid over AA occurred in response to omega-3 lipid infusion. LTB(5), in addition to LTB(4), appeared upon neutrophil stimulation originating from these patients, and neutrophil function was significantly improved in the omega-3 lipid group. CONCLUSIONS omega-3 vs. omega-6 lipid emulsions differentially influence the plasma free fatty acid profile with impact on neutrophil functions. Lipid-based parenteral nutrition in septic patients may thus exert profound influence on sequelae and status of immunocompetence and inflammation.
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Affiliation(s)
- Konstantin Mayer
- Department of Internal Medicine, Justus Liebig University, Klinikstrasse 36, Giessen, Germany.
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