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Lv C, Zhang ZX, Ke L. Early prediction and prevention of infected pancreatic necrosis. World J Gastroenterol 2024; 30:1005-1010. [PMID: 38577189 PMCID: PMC10989483 DOI: 10.3748/wjg.v30.i9.1005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/18/2023] [Revised: 01/02/2024] [Accepted: 02/06/2024] [Indexed: 03/06/2024] Open
Abstract
Approximately 20%-30% of patients with acute necrotizing pancreatitis develop infected pancreatic necrosis (IPN), a highly morbid and potentially lethal complication. Early identification of patients at high risk of IPN may facilitate appropriate preventive measures to improve clinical outcomes. In the past two decades, several markers and predictive tools have been proposed and evaluated for this purpose. Conventional biomarkers like C-reactive protein, procalcitonin, lymphocyte count, interleukin-6, and interleukin-8, and newly developed biomarkers like angiopoietin-2 all showed significant association with IPN. On the other hand, scoring systems like the Acute Physiology and Chronic Health Evaluation II and Pancreatitis Activity Scoring System have also been tested, and the results showed that they may provide better accuracy. For early prevention of IPN, several new therapies were tested, including early enteral nutrition, antibiotics, probiotics, immune enhancement, etc., but the results varied. Taken together, several evidence-supported predictive markers and scoring systems are readily available for predicting IPN. However, effective treatments to reduce the incidence of IPN are still lacking apart from early enteral nutrition. In this editorial, we summarize evidence concerning early prediction and prevention of IPN, providing insights into future practice and study design. A more homogeneous patient population with reliable risk-stratification tools may help find effective treatments to reduce the risk of IPN, thereby achieving individualized treatment.
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Affiliation(s)
- Cheng Lv
- Department of Critical Care Medicine, Jinling Hospital, Affiliated Hospital of Medical School, Nanjing University, Nanjing 210000, Jiangsu Province, China
| | - Zi-Xiong Zhang
- Department of Critical Care Medicine, Jinling Hospital, Affiliated Hospital of Medical School, Nanjing University, Nanjing 210000, Jiangsu Province, China
| | - Lu Ke
- Department of Critical Care Medicine, Jinling Hospital, Affiliated Hospital of Medical School, Nanjing University, Nanjing 210000, Jiangsu Province, China
- Research Institute of Critical Care Medicine and Emergency Rescue, Nanjing University, Nanjing 210000, Jiangsu Province, China
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2
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Cai T, Mao W, Liu M, Zhou J, Wang X, Zhou J, Liu Y, Lv G, Ke L, Zhang Y. Early mean absolute lymphocyte count in acute necrotizing pancreatitis is associated with infected pancreatic necrosis. Int Immunopharmacol 2023; 117:109883. [PMID: 36827921 DOI: 10.1016/j.intimp.2023.109883] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2022] [Revised: 01/23/2023] [Accepted: 01/24/2023] [Indexed: 02/24/2023]
Abstract
OBJECTIVES Peripheral absolute lymphocyte count (ALC) has the potential to predict infected pancreatic necrosis (IPN), but requires verification. This study aimed to assess whether early mean absolute lymphocyte count is associated with the development of IPN in ANP patients using pooled data from a multicenter, randomized controlled trial and a retrospective study. METHODS The study subjects are from the TRACE trial and a single-center cohort study. ALC during the first seven days was used to define early mean ALC. The entire cohort was then divided into quartiles of early mean ALC. Multivariable Cox proportional hazards regression (MCPHR) model was used to assess the association between early mean ALC and 90-day IPN. RESULTS A total of 660 patients (median age, 44 years; 63.8 % males) were included and 157 (23.8 %) developed IPN within a 90-day period. The median (interquartile range, IQR) of the early mean ALC is 1.07 (0.80-1.36). All the study subjects were evenly divided into 4 groups: quartile-1 (0.33-0.79*10^9/L), quartile-2 (0.80-1.06*10^9/L), quartile-3 (1.07-1.36*10^9/L) and quartile-4 (1.37-4.01*10^9/L). The incidence of 90-day IPN was 38.3 %, 25.7 %, 19.2 % and 12.2 % for each group, respectively. In the MCPHR model, the lowest early mean ALC (quartile-1) was found to be an independent risk factor of 90-day IPN with a hazard ratio (95 %CI) of 2.21 (1.28-3.81) compared to the highest mean ALC(quartile-4) group. CONCLUSION Among patients with ANP, early mean ALC was significantly associated with the development of IPN. Preventive strategies should be considered in patients with reduced ALC.
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Affiliation(s)
- Tianbin Cai
- Department of Critical Care Medicine, Liuzhou People's Hospital, Liuzhou 545006, Guangxi Zhuang Autonomous Region, China
| | - Wenjian Mao
- Department of Critical Care Medicine, Jinling Hospital, Medical School of Nanjing University, Nanjing 210002, Jiangsu, China; National Institute of Healthcare Data Science, Nanjing University, Nanjing 210010, Jiangsu, China; Department of Critical Care Medicine, Jinling Hospital, Nanjing Medical University, Nanjing 210010, Jiangsu, China
| | - Meiqiong Liu
- Department of Critical Care Medicine, Liuzhou People's Hospital, Liuzhou 545006, Guangxi Zhuang Autonomous Region, China
| | - Jing Zhou
- Department of Critical Care Medicine, Jinling Hospital, Southeast University, Nanjing 210010, Jiangsu, China
| | - Xinyu Wang
- Department of Critical Care Medicine, Jinling Hospital, Medical School of Nanjing University, Nanjing 210002, Jiangsu, China; National Institute of Healthcare Data Science, Nanjing University, Nanjing 210010, Jiangsu, China; Department of Critical Care Medicine, Jinling Hospital, Nanjing Medical University, Nanjing 210010, Jiangsu, China
| | - Jing Zhou
- Department of Critical Care Medicine, Jinling Hospital, Medical School of Nanjing University, Nanjing 210002, Jiangsu, China; National Institute of Healthcare Data Science, Nanjing University, Nanjing 210010, Jiangsu, China; Department of Critical Care Medicine, Jinling Hospital, Nanjing Medical University, Nanjing 210010, Jiangsu, China
| | - Yuxiu Liu
- Department of Critical Care Medicine, Jinling Hospital, Medical School of Nanjing University, Nanjing 210002, Jiangsu, China; National Institute of Healthcare Data Science, Nanjing University, Nanjing 210010, Jiangsu, China; Department of Biostatistics, School of Public Health, Nanjing Medical University, Nanjing 211166, Jiangsu, China
| | - Guangyu Lv
- Department of Critical Care Medicine, Liuzhou People's Hospital, Liuzhou 545006, Guangxi Zhuang Autonomous Region, China
| | - Lu Ke
- Department of Critical Care Medicine, Jinling Hospital, Medical School of Nanjing University, Nanjing 210002, Jiangsu, China; National Institute of Healthcare Data Science, Nanjing University, Nanjing 210010, Jiangsu, China; Department of Critical Care Medicine, Jinling Hospital, Nanjing Medical University, Nanjing 210010, Jiangsu, China.
| | - Youhua Zhang
- Department of Critical Care Medicine, Liuzhou People's Hospital, Liuzhou 545006, Guangxi Zhuang Autonomous Region, China.
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Yin J, Mao W, Xiao X, Yu X, Li B, Chen F, Lin J, Zhou J, Zhou J, Tong Z, Ke L, Li W. Immune Dysfunction is Associated with Readmission in Survivors of Sepsis Following Infected Pancreatic Necrosis. J Inflamm Res 2021; 14:5433-5442. [PMID: 34707384 PMCID: PMC8542572 DOI: 10.2147/jir.s321507] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2021] [Accepted: 10/11/2021] [Indexed: 12/04/2022] Open
Abstract
Objective Immunosuppression is common in patients with infected pancreatic necrosis (IPN) and associated with morbidity and mortality. This study aimed to investigate the impact of immune status on mortality and readmission after hospital discharge in patients with IPN-related sepsis. Methods In this prospective observational study, eligible adult patients with IPN-related sepsis requiring ICU admission were included. Monocytic human leukocyte antigen DR (mHLA-DR), expression of regulatory T cells (Treg), and neutrophil CD88 (nCD88) were measured on the diagnosis of sepsis, ICU discharge, hospital discharge, and 15, 30, 60 days after hospital discharge. Logistic regression model was used to assess potential risk factors for readmission 60-days within the index discharge. Results A total of 53 patients were included, 13 died during hospitalization and one withdrew the consent soon after discharge. Among the survivors, a tendency of immune recovery was observed during the consecutive follow-ups, evidenced by the increased expression of mHLA-DR. Sixteen patients (41.03%) were readmitted within 60 days after the index discharge. In the multivariable regression model, APACHE II score when sepsis was diagnosed >9 and mHLA-DR at discharged <14,591 AB/C were found to be independent risk factors affecting readmission. Conclusion Immunosuppression is common in patients with IPN-related sepsis and can persist until two months after discharge. The compromised mHLA-DR level at discharge was associated with readmission within two months after discharge.
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Affiliation(s)
- Jiangtao Yin
- Department of Critical Care Medicine, Jinling Hospital, Nanjing Medical University, Nanjing, People's Republic of China.,Department of Intensive Care Unit, Affiliated Hospital of Jiangsu University, Zhenjiang, People's Republic of China
| | - Wenjian Mao
- Department of Critical Care Medicine, Jinling Hospital, Nanjing Medical University, Nanjing, People's Republic of China
| | - Xiaojia Xiao
- Department of Critical Care Medicine, Jinling Hospital of Southern Medical University, Nanjing, People's Republic of China
| | - Xianqiang Yu
- Southeast University School of Medicine, Nanjing, People's Republic of China
| | - Baiqiang Li
- Department of Critical Care Medicine, Jinling Hospital, Nanjing University, Nanjing, People's Republic of China
| | - Faxi Chen
- Department of Critical Care Medicine, Jinling Hospital, Nanjing University, Nanjing, People's Republic of China
| | - Jiajia Lin
- Department of Critical Care Medicine, Jinling Hospital, Nanjing University, Nanjing, People's Republic of China
| | - Jing Zhou
- Department of Critical Care Medicine, Jinling Hospital, Nanjing Medical University, Nanjing, People's Republic of China
| | - Jing Zhou
- Southeast University School of Medicine, Nanjing, People's Republic of China
| | - Zhihui Tong
- Department of Critical Care Medicine, Jinling Hospital, Nanjing University, Nanjing, People's Republic of China
| | - Lu Ke
- Department of Critical Care Medicine, Jinling Hospital, Nanjing University, Nanjing, People's Republic of China
| | - Weiqin Li
- Department of Critical Care Medicine, Jinling Hospital, Nanjing Medical University, Nanjing, People's Republic of China.,Department of Critical Care Medicine, Jinling Hospital, Nanjing University, Nanjing, People's Republic of China
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Minkov G, Dimitrov E, Yovtchev Y, Enchev E, Lokova R, Halacheva K. Prognostic value of peripheral blood CD14+HLA-DR+ monocytes in patients with acute pancreatitis. J Immunoassay Immunochem 2021; 42:478-492. [PMID: 33818295 DOI: 10.1080/15321819.2021.1903491] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
Acute pancreatitis (AP) is characterized by a potent pro-inflammatory response and concomitant anti-inflammatory response leading to a state of immunosuppression. Decreased HLA (Human Leukocyte Antigen)-DR expression on monocytes is a reliable cellular marker of immune suppression. The main objective of this study was to investigate the clinical value of the percentage of peripheral blood CD14+ HLA-DR+ monocytes (mHLA-DR) for diagnosis and assessment of severity, development of organ failures (OF), local complications (LC), and infected necrosis (IN), and outcome in patients with AP. Flow cytometry was used to measure the percentage of peripheral blood mHLA-DR at different time points in 82 patients with AP enrolled during the period of 2012-2018 admitted to University Hospital Stara Zagora, Bulgaria. The percentages of peripheral blood mHLA-DR in AP patients were significantly associated with severity, development of LC, OF, IN (measured at admission, on the 48th hour and on the 5th day) and with outcome (measured on the 5th day) of AP. The value of peripheral blood mHLA-DR may be used as a biological marker in the diagnosis and assessment of severity, development of OF, LC, IN and to predict outcome in AP.
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Affiliation(s)
- Georgi Minkov
- Department of Surgery, University Hospital "Prof. Dr. Stoyan Kirkovich" Stara Zagora, Bulgaria
| | - Evgeni Dimitrov
- Department of Surgery, University Hospital "Prof. Dr. Stoyan Kirkovich" Stara Zagora, Bulgaria
| | - Yovcho Yovtchev
- Department of Surgery, University Hospital "Prof. Dr. Stoyan Kirkovich" Stara Zagora, Bulgaria
| | - Emil Enchev
- Department of Surgery, University Hospital "Prof. Dr. Stoyan Kirkovich" Stara Zagora, Bulgaria
| | - Rumyana Lokova
- Laboratory of Clinical Immunology, University Hospital "Prof. Dr. Stoyan Kirkovich" Stara Zagora, Bulgaria
| | - Krasimira Halacheva
- Laboratory of Clinical Immunology, University Hospital "Prof. Dr. Stoyan Kirkovich" Stara Zagora, Bulgaria
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5
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Spinetti T, Hirzel C, Fux M, Walti LN, Schober P, Stueber F, Luedi MM, Schefold JC. Reduced Monocytic Human Leukocyte Antigen-DR Expression Indicates Immunosuppression in Critically Ill COVID-19 Patients. Anesth Analg 2020; 131:993-999. [PMID: 32925314 PMCID: PMC7288784 DOI: 10.1213/ane.0000000000005044] [Citation(s) in RCA: 57] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
BACKGROUND: The cellular immune system is of pivotal importance with regard to the response to severe infections. Monocytes/macrophages are considered key immune cells in infections and downregulation of the surface expression of monocytic human leukocyte antigen-DR (mHLA-DR) within the major histocompatibility complex class II reflects a state of immunosuppression, also referred to as injury-associated immunosuppression. As the role of immunosuppression in coronavirus disease 2019 (COVID-19) is currently unclear, we seek to explore the level of mHLA-DR expression in COVID-19 patients. METHODS: In a preliminary prospective monocentric observational study, 16 COVID-19–positive patients (75% male, median age: 68 [interquartile range 59–75]) requiring hospitalization were included. The median Acute Physiology and Chronic Health Evaluation-II (APACHE-II) score in 9 intensive care unit (ICU) patients with acute respiratory failure was 30 (interquartile range 25–32). Standardized quantitative assessment of HLA-DR on monocytes (cluster of differentiation 14+ cells) was performed using calibrated flow cytometry at baseline (ICU/hospital admission) and at days 3 and 5 after ICU admission. Baseline data were compared to hospitalized noncritically ill COVID-19 patients. RESULTS: While normal mHLA-DR expression was observed in all hospitalized noncritically ill patients (n = 7), 89% (8 of 9) critically ill patients with COVID-19–induced acute respiratory failure showed signs of downregulation of mHLA-DR at ICU admission. mHLA-DR expression at admission was significantly lower in critically ill patients (median, [quartiles]: 9280 antibodies/cell [6114, 16,567]) as compared to the noncritically ill patients (30,900 antibodies/cell [26,777, 52,251]), with a median difference of 21,508 antibodies/cell (95% confidence interval [CI], 14,118–42,971), P = .002. Reduced mHLA-DR expression was observed to persist until day 5 after ICU admission. CONCLUSIONS: When compared to noncritically ill hospitalized COVID-19 patients, ICU patients with severe COVID-19 disease showed reduced mHLA-DR expression on circulating CD14+ monocytes at ICU admission, indicating a dysfunctional immune response. This immunosuppressive (monocytic) phenotype remained unchanged over the ensuing days after ICU admission. Strategies aiming for immunomodulation in this population of critically ill patients should be guided by an immune-monitoring program in an effort to determine who might benefit best from a given immunological intervention.
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Affiliation(s)
- Thibaud Spinetti
- From the Department of Intensive Care Medicine, Inselspital, Bern University Hospital, University of Bern
| | - Cedric Hirzel
- Department of Infectious Diseases, Inselspital, Bern University Hospital, University of Bern
| | - Michaela Fux
- University Institute of Clinical Chemistry, Inselspital, University of Bern, Bern, Switzerland
| | - Laura N Walti
- Department of Infectious Diseases, Inselspital, Bern University Hospital, University of Bern
| | - Patrick Schober
- Department of Anaesthesiology, Amsterdam University Medical Centres, Vrije Universiteit Amsterdam, Amsterdam, the Netherlands
| | - Frank Stueber
- Department of Anaesthesiology and Pain Medicine, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
| | - Markus M Luedi
- Department of Anaesthesiology and Pain Medicine, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
| | - Joerg C Schefold
- From the Department of Intensive Care Medicine, Inselspital, Bern University Hospital, University of Bern
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6
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Ponomarev AV, Shubina IZ. Insights Into Mechanisms of Tumor and Immune System Interaction: Association With Wound Healing. Front Oncol 2019; 9:1115. [PMID: 31709183 PMCID: PMC6823879 DOI: 10.3389/fonc.2019.01115] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2019] [Accepted: 10/07/2019] [Indexed: 12/14/2022] Open
Abstract
A large number of studies have presented a great deal of information about tumor and immune system interaction. Nevertheless, the problem of tumor evasion from the immune reaction is still difficult to resolve. Understanding the ways in which immunosuppressive tumor microenvironment develops and maintains its potential is of utmost importance to ensure the best use of the suppressed immune functions. The study presents a review covering the data on tumor-associated antigens, mechanisms of tumor evasion from the immune reactions, and search for common immunosuppressive processes of tumor growth and normal wound healing. The study discusses the important role of monocytes/macrophages in the regulation of immune system reactions. We suggest that the simultaneous actions of growth factors and pro-inflammatory cytokines may result in the suppression of the immune system. The study describes intracellular signaling molecules that take part in the regulation of the myeloid cell functions. If the hypothesis is proved correct, the indicated interaction of cytokines could be regarded as a prospective target for antitumor therapy.
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Affiliation(s)
| | - Irina Zh Shubina
- N.N. Blokhin National Medical Research Center of Oncology, Moscow, Russia
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7
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Cheng Y, Marion TN, Cao X, Wang W, Cao Y. Park 7: A Novel Therapeutic Target for Macrophages in Sepsis-Induced Immunosuppression. Front Immunol 2018; 9:2632. [PMID: 30542343 PMCID: PMC6277877 DOI: 10.3389/fimmu.2018.02632] [Citation(s) in RCA: 43] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2018] [Accepted: 10/25/2018] [Indexed: 02/05/2023] Open
Abstract
Sepsis remains a serious and life-threatening condition with high morbidity and mortality due to uncontrolled inflammation together with immunosuppression with few therapeutic options. Macrophages are recognized to play essential roles throughout all phases of sepsis and affect both immune homeostasis and inflammatory processes, and macrophage dysfunction is considered to be one of the major causes for sepsis-induced immunosuppression. Currently, Parkinson disease protein 7 (Park 7) is known to play an important role in regulating the production of reactive oxygen species (ROS) through interaction with p47phox, a subunit of NADPH oxidase. ROS are key mediators in initiating toll-like receptor (TLR) signaling pathways to activate macrophages. Emerging evidence has strongly implicated Park 7 as an antagonist for sepsis-induced immunosuppression, which suggests that Park 7 may be a novel therapeutic target for reversing immunosuppression compromised by sepsis. Here, we review the main characteristics of sepsis-induced immunosuppression caused by macrophages and provide a detailed mechanism for how Park 7 antagonizes sepsis-induced immunosuppression initiated by the macrophage inflammatory response. Finally, we further discuss the most promising approach to develop innovative drugs that target Park 7 in patients whose initial presentation is at the late stage of sepsis.
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Affiliation(s)
- Yanwei Cheng
- West China Hospital Emergency Department, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, and Collaborative Innovation Center of Biotherapy, Chengdu, China.,Disaster Medicine Center, Sichuan University, Chengdu, China
| | - Tony N Marion
- Department of Rheumatology and Immunology, West China Hospital, Sichuan University, Chengdu, China.,Department of Microbiology, Immunology, and Biochemistry, The University of Tennessee Health Science Center, Memphis, TN, United States
| | - Xue Cao
- Disaster Medicine Center, Sichuan University, Chengdu, China.,Department of Rheumatology and Immunology, West China Hospital, Sichuan University, Chengdu, China
| | - Wanting Wang
- West China Hospital Emergency Department, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, and Collaborative Innovation Center of Biotherapy, Chengdu, China
| | - Yu Cao
- West China Hospital Emergency Department, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, and Collaborative Innovation Center of Biotherapy, Chengdu, China.,Disaster Medicine Center, Sichuan University, Chengdu, China
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8
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Alingrin J, Coiffard B, Textoris J, Nicolino-Brunet C, Gossez M, Jarrot PA, Dignat-George F, Monneret G, Thomas PA, Leone M, Reynaud-Gaubert M, Papazian L. Sepsis is associated with lack of monocyte HLA-DR expression recovery without modulating T-cell reconstitution after lung transplantation. Transpl Immunol 2018; 51:6-11. [PMID: 30081187 DOI: 10.1016/j.trim.2018.08.001] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2018] [Revised: 07/18/2018] [Accepted: 08/02/2018] [Indexed: 12/31/2022]
Abstract
BACKGROUND Immunosuppressive strategy targets mainly adaptive immunity after solid organ transplantation. We assessed the influence of early post-operative sepsis on T cell and monocyte reconstitution in anti-thymocyte globulin (ATG)-treated lung transplant recipients. METHODS We retrospectively included recipients who underwent a first lung transplant at our Lung Transplant Center (Marseille, France) between July 2011 and February 2013. Peripheral blood T-lymphocyte subset counts and monocyte HLA-DR (mHLA-DR) expression routinely performed by flow cytometry within 60 days post-transplant were analyzed. We compared the immune kinetics of patients who did or did not develop sepsis during the post-operative intensive care unit stay. RESULTS Among the 37 recipients included, 19 patients (51%) developed at least one episode of sepsis. At the ICU admission, septic recipients had higher SOFA score (9 [7.5-9] versus 6 [4-7]), p = .01), higher primary graft dysfunction score (1.4 ± 1.4 versus 0.3 ± 0.7, p = .008) and more frequent use of ECMO (47% versus 0%, p = .003). Whereas both groups had similar T-lymphocytes reconstitution in the post-operative period, mHLA-DR reconstitution was dramatically affected in septic patients after day 14, median mHLA-DR expression at 2.3 MFI [1.3-3.5] in the septic versus 8.0 MFI [5.1-10.5] in the non-septic group, p = .02. CONCLUSION We found that sepsis is negatively correlated with the mHLA-DR expression but not adaptive T cell immune reconstitution. This finding highlights the importance of immunomonitoring after lung transplantation and questions the strategy of a lower immunosuppression therapy in context of sepsis.
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Affiliation(s)
- Julie Alingrin
- Aix Marseille Université, APHM, Hôpital Nord, Service d'Anesthésie et de Réanimation, Marseille, France.
| | - Benjamin Coiffard
- APHM, CHU Hôpital Nord, Service de Médecine Intensive - Réanimation, Marseille, France
| | - Julien Textoris
- Service d'Anesthésie et de Réanimation, Hôpital Edouard Herriot, Lyon, France
| | | | - Morgane Gossez
- Laboratoire d'Immunologie, EA7426 "Pathophysiology of Injury-Induced immunosuppression", Hospices Civils de Lyon - Université Claude Bernard Lyon bioMérieux, Lyon, France
| | | | | | - Guillaume Monneret
- Laboratoire d'Immunologie, EA7426 "Pathophysiology of Injury-Induced immunosuppression", Hospices Civils de Lyon - Université Claude Bernard Lyon bioMérieux, Lyon, France
| | | | - Marc Leone
- Aix Marseille Université, APHM, Hôpital Nord, Service d'Anesthésie et de Réanimation, Marseille, France
| | - Martine Reynaud-Gaubert
- APHM, CHU Hôpital Nord, Service de Pneumologie et de Transplantation Pulmonaire, Marseille, France
| | - Laurent Papazian
- APHM, CHU Hôpital Nord, Service de Médecine Intensive - Réanimation, Marseille, France
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9
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Martins P. Glutamine in critically ill patients: is it a fundamental nutritional supplement? Rev Bras Ter Intensiva 2017; 28:100-3. [PMID: 27410403 PMCID: PMC4943045 DOI: 10.5935/0103-507x.20160022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2016] [Accepted: 03/28/2016] [Indexed: 11/20/2022] Open
Affiliation(s)
- Paulo Martins
- Serviço de Medicina Intensiva, Centro Hospitalar Universitário de Coimbra, Coimbra, Portugal
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10
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Pang X, Wang Z, Zhai N, Zhang Q, Song H, Zhang Y, Li T, Li H, Su L, Niu J, Tu Z. IL-10 plays a central regulatory role in the cytokines induced by hepatitis C virus core protein and polyinosinic acid:polycytodylic acid. Int Immunopharmacol 2016; 38:284-90. [PMID: 27337528 DOI: 10.1016/j.intimp.2016.06.013] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2016] [Revised: 06/15/2016] [Accepted: 06/17/2016] [Indexed: 12/24/2022]
Abstract
Hepatitis C virus (HCV) can cause persistent infection and chronic liver disease, and viral factors are involved in HCV persistence. HCV core protein, a highly conserved viral protein, not only elicits an immunoresponse, but it also regulates it. In addition, HCV core protein interacts with toll-like receptors (TLRs) on monocytes, inducing them to produce cytokines. Polyinosinic acid:polycytodylic acid (polyI:C) is a synthetic analogue of double-stranded RNA that binds to TLR3 and can induce secretion of type I IFN from monocytes. Cytokine response against HCV is likely to affect the natural course of infection as well as HCV persistence. However, possible effects of cytokines induced by HCV core protein and polyI:C remain to be investigated. In this study, we isolated CD14(+) monocytes from healthy donors, cultured them in the presence of HCV core protein and/or polyI:C, and characterized the induced cytokines, phenotypes and mechanisms. We demonstrated that HCV core protein- and polyI:C-stimulated CD14(+) monocytes secreted tumor necrosis factor-α (TNF-α), interleukin (IL)-1β, IL-10, and type I interferon (IFN). Importantly, TNF-α and IL-1β regulated the secretion of IL-10, which then influenced the expression of signal transducer and activator of transcription 1 (STAT1) and interferon regulatory factor 1 (IRF1) and subsequently the production of type I IFN. Interestingly, type I IFN also regulated the production of IL-10, which in turn inhibited the nuclear factor (NF)-κB subunit, reducing TNF-α and IL-1β levels. Therefore, IL-10 appears to play a central role in regulating the production of cytokines induced by HCV core protein and polyI:C.
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Affiliation(s)
- Xiaoli Pang
- Department of Hepatology, The First Hospital of Jilin University, Changchun, Jilin 130021, China; Department of Pediatric Gastroenterology, The First Hospital of Jilin University, Changchun, Jilin 130021, China
| | - Zhaoxia Wang
- Department of Pediatric Gastroenterology, The First Hospital of Jilin University, Changchun, Jilin 130021, China
| | - Naicui Zhai
- Translational Medicine Research Institute, The First Hospital of Jilin University, Changchun, Jilin 130021, China
| | - Qianqian Zhang
- Department of Hepatology, The First Hospital of Jilin University, Changchun, Jilin 130021, China
| | - Hongxiao Song
- Translational Medicine Research Institute, The First Hospital of Jilin University, Changchun, Jilin 130021, China
| | - Yujiao Zhang
- Department of Hepatology, The First Hospital of Jilin University, Changchun, Jilin 130021, China
| | - Tianyang Li
- Translational Medicine Research Institute, The First Hospital of Jilin University, Changchun, Jilin 130021, China
| | - Haijun Li
- Translational Medicine Research Institute, The First Hospital of Jilin University, Changchun, Jilin 130021, China
| | - Lishan Su
- Lineberger Comprehensive Cancer Center, The University of North Carolina at Chapel Hill, Chapel Hill, NC, United States; Department of Microbiology and Immunology, The University of North Carolina at Chapel Hill, Chapel Hill, NC, United States
| | - Junqi Niu
- Department of Hepatology, The First Hospital of Jilin University, Changchun, Jilin 130021, China.
| | - Zhengkun Tu
- Translational Medicine Research Institute, The First Hospital of Jilin University, Changchun, Jilin 130021, China.
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Monocyte Tumor Necrosis Factor-α-Converting Enzyme Catalytic Activity and Substrate Shedding in Sepsis and Noninfectious Systemic Inflammation. Crit Care Med 2015; 43:1375-85. [PMID: 25867908 PMCID: PMC4467590 DOI: 10.1097/ccm.0000000000000992] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Objectives: To determine the effect of severe sepsis on monocyte tumor necrosis factor-α–converting enzyme baseline and inducible activity profiles. Design: Observational clinical study. Setting: Mixed surgical/medical teaching hospital ICU. Patients: Sixteen patients with severe sepsis, 15 healthy volunteers, and eight critically ill patients with noninfectious systemic inflammatory response syndrome. Interventions: None. Measurements and Main Results: Monocyte expression of human leukocyte antigen-D-related peptide, sol-tumor necrosis factor production, tumor necrosis factor-α–converting enzyme expression and catalytic activity, tumor necrosis factor receptor 1 and 2 expression, and shedding at 48-hour intervals from day 0 to day 4, as well as p38-mitogen activated protein kinase expression. Compared with healthy volunteers, both sepsis and systemic inflammatory response syndrome patients’ monocytes expressed reduced levels of human leukocyte antigen-D-related peptide and released less sol-tumor necrosis factor on in vitro lipopolysaccharide stimulation, consistent with the term monocyte deactivation. However, patients with sepsis had substantially elevated levels of basal tumor necrosis factor-α–converting enzyme activity that were refractory to lipopolysaccharide stimulation and this was accompanied by similar changes in p38-mitogen activated protein kinase signaling. In patients with systemic inflammatory response syndrome, monocyte basal tumor necrosis factor-α–converting enzyme, and its induction by lipopolysaccharide, appeared similar to healthy controls. Changes in basal tumor necrosis factor-α–converting enzyme activity at day 0 for sepsis patients correlated with Acute Physiology and Chronic Health Evaluation II score and the attenuated tumor necrosis factor-α–converting enzyme response to lipopolysaccharide was associated with increased mortality. Similar changes in monocyte tumor necrosis factor-α–converting enzyme activity could be induced in healthy volunteer monocytes using an in vitro two-hit inflammation model. Patients with sepsis also displayed reduced shedding of monocyte tumor necrosis factor receptors upon stimulation with lipopolysaccharide. Conclusions: Monocyte tumor necrosis factor-α–converting enzyme catalytic activity appeared altered by sepsis and may result in reduced shedding of tumor necrosis factor receptors. Changes seemed specific to sepsis and correlated with illness severity. A better understanding of how tumor necrosis factor-α–converting enzyme function is altered during sepsis will enhance our understanding of sepsis pathophysiology, which will help in the assessment of patient inflammatory status and ultimately may provide new strategies to treat sepsis.
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