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Abbasciano RG, Olivieri GM, Chubsey R, Gatta F, Tyson N, Easwarakumar K, Fudulu DP, Marsico R, Kofler M, Elshafie G, Lai F, Loubani M, Kendall S, Zakkar M, Murphy GJ. Prophylactic corticosteroids for cardiopulmonary bypass in adult cardiac surgery. Cochrane Database Syst Rev 2024; 3:CD005566. [PMID: 38506343 PMCID: PMC10952358 DOI: 10.1002/14651858.cd005566.pub4] [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] [Indexed: 03/21/2024]
Abstract
BACKGROUND Cardiac surgery triggers a strong inflammatory reaction, which carries significant clinical consequences. Corticosteroids have been suggested as a potential perioperative strategy to reduce inflammation and help prevent postoperative complications. However, the safety and effectiveness of perioperative corticosteroid use in adult cardiac surgery is uncertain. This is an update of the 2011 review with 18 studies added. OBJECTIVES Primary objective: to estimate the effects of prophylactic corticosteroid use in adults undergoing cardiac surgery with cardiopulmonary bypass on the: - co-primary endpoints of mortality, myocardial complications, and pulmonary complications; and - secondary outcomes including atrial fibrillation, infection, organ injury, known complications of steroid therapy, prolonged mechanical ventilation, prolonged postoperative stay, and cost-effectiveness. SECONDARY OBJECTIVE to explore the role of characteristics of the study cohort and specific features of the intervention in determining the treatment effects via a series of prespecified subgroup analyses. SEARCH METHODS We used standard, extensive Cochrane search methods to identify randomised studies assessing the effect of corticosteroids in adult cardiac surgery. The latest searches were performed on 14 October 2022. SELECTION CRITERIA We included randomised controlled trials in adults (over 18 years, either with a diagnosis of coronary artery disease or cardiac valve disease, or who were candidates for cardiac surgery with the use of cardiopulmonary bypass), comparing corticosteroids with no treatments. There were no restrictions with respect to length of the follow-up period. All selected studies qualified for pooling of results for one or more endpoints. DATA COLLECTION AND ANALYSIS We used standard Cochrane methods. Our primary outcomes were all-cause mortality, and cardiac and pulmonary complications. Secondary outcomes were infectious complications, gastrointestinal bleeding, occurrence of new post-surgery atrial fibrillation, re-thoracotomy for bleeding, neurological complications, renal failure, inotropic support, postoperative bleeding, mechanical ventilation time, length of stays in the intensive care unit (ICU) and hospital, patient quality of life, and cost-effectiveness. We used GRADE to assess the certainty of evidence for each outcome. MAIN RESULTS This updated review includes 72 randomised trials with 17,282 participants (all 72 trials with 16,962 participants were included in data synthesis). Four trials (6%) were considered at low risk of bias in all the domains. The median age of participants included in the studies was 62.9 years. Study populations consisted mainly (89%) of low-risk, first-time coronary artery bypass grafting (CABG) or valve surgery. The use of perioperative corticosteroids may result in little to no difference in all-cause mortality (risk with corticosteroids: 25 to 36 per 1000 versus 33 per 1000 with placebo or no treatment; risk ratio (RR) 0.90, 95% confidence interval (CI) 0.75 to 1.07; 25 studies, 14,940 participants; low-certainty evidence). Corticosteroids may increase the risk of myocardial complications (68 to 86 per 1000) compared with placebo or no treatment (66 per 1000; RR 1.16, 95% CI 1.04 to 1.31; 25 studies, 14,766 participants; low-certainty evidence), and may reduce the risk of pulmonary complications (risk with corticosteroids: 61 to 77 per 1000 versus 78 per 1000 with placebo/no treatment; RR 0.88, 0.78 to 0.99; 18 studies, 13,549 participants; low-certainty evidence). Analyses of secondary endpoints showed that corticosteroids may reduce the incidence of infectious complications (risk with corticosteroids: 94 to 113 per 1000 versus 123 per 1000 with placebo/no treatment; RR 0.84, 95% CI 0.76 to 0.92; 28 studies, 14,771 participants; low-certainty evidence). Corticosteroids may result in little to no difference in incidence of gastrointestinal bleeding (risk with corticosteroids: 9 to 17 per 1000 versus 10 per 1000 with placebo/no treatment; RR 1.21, 95% CI 0.87 to 1.67; 6 studies, 12,533 participants; low-certainty evidence) and renal failure (risk with corticosteroids: 23 to 35 per 1000 versus 34 per 1000 with placebo/no treatment; RR 0.84, 95% CI 0.69 to 1.02; 13 studies, 12,799; low-certainty evidence). Corticosteroids may reduce the length of hospital stay, but the evidence is very uncertain (-0.5 days, 0.97 to 0.04 fewer days of length of hospital stay compared with placebo/no treatment; 25 studies, 1841 participants; very low-certainty evidence). The results from the two largest trials included in the review possibly skew the overall findings from the meta-analysis. AUTHORS' CONCLUSIONS A systematic review of trials evaluating the organ protective effects of corticosteroids in cardiac surgery demonstrated little or no treatment effect on mortality, gastrointestinal bleeding, and renal failure. There were opposing treatment effects on cardiac and pulmonary complications, with evidence that corticosteroids may increase cardiac complications but reduce pulmonary complications; however, the level of certainty for these estimates was low. There were minor benefits from corticosteroid therapy for infectious complications, but the evidence on hospital length of stay was very uncertain. The inconsistent treatment effects across different outcomes and the limited data on high-risk groups reduced the applicability of the findings. Further research should explore the role of these drugs in specific, vulnerable cohorts.
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Affiliation(s)
| | | | - Rachel Chubsey
- University Hospitals of Leicester NHS Trust, Leicester, UK
| | - Francesca Gatta
- Department of Cardiothoracic Surgery, Liverpool Heart and Chest Hospital, Liverpool, UK
| | - Nathan Tyson
- Department of Cardiac Surgery, University Hospitals of Leicester, Leicester, UK
| | | | - Daniel P Fudulu
- Department of Cardiac Surgery, University Hospital Bristol NHS Trust, Bristol, UK
| | | | | | - Ghazi Elshafie
- Department of Cardiothoracic Surgery, Hull and East Yorkshire Hospitals NHS Trust, Hull, UK
| | - Florence Lai
- Leicester Clinical Trials Unit, University of Leicester, Glenfield Hospital, Leicester, UK
| | - Mahmoud Loubani
- Department of Cardiothoracic Surgery, Hull and East Yorkshire Hospitals NHS Trust, Hull, UK
| | | | - Mustafa Zakkar
- Department of Cardiovascular Sciences, University of Leicester, Leicester, UK
| | - Gavin J Murphy
- Department of Cardiovascular Sciences, University of Leicester, Leicester, UK
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Abbasciano RG, Tomassini S, Roman MA, Rizzello A, Pathak S, Ramzi J, Lucarelli C, Layton G, Butt A, Lai F, Kumar T, Wozniak MJ, Murphy GJ. Effects of interventions targeting the systemic inflammatory response to cardiac surgery on clinical outcomes in adults. Cochrane Database Syst Rev 2023; 10:CD013584. [PMID: 37873947 PMCID: PMC10594589 DOI: 10.1002/14651858.cd013584.pub2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/25/2023]
Abstract
BACKGROUND Organ injury is a common and severe complication of cardiac surgery that contributes to the majority of deaths. There are no effective treatment or prevention strategies. It has been suggested that innate immune system activation may have a causal role in organ injury. A wide range of organ protection interventions targeting the innate immune response have been evaluated in randomised controlled trials (RCTs) in adult cardiac surgery patients, with inconsistent results in terms of effectiveness. OBJECTIVES The aim of the review was to summarise the results of RCTs of organ protection interventions targeting the innate immune response in adult cardiac surgery. The review considered whether the interventions had a treatment effect on inflammation, important clinical outcomes, or both. SEARCH METHODS CENTRAL, MEDLINE, Embase, conference proceedings and two trial registers were searched on October 2022 together with reference checking to identify additional studies. SELECTION CRITERIA RCTs comparing organ protection interventions targeting the innate immune response versus placebo or no treatment in adult patients undergoing cardiac surgery where the treatment effect on innate immune activation and on clinical outcomes of interest were reported. DATA COLLECTION AND ANALYSIS Searches, study selection, quality assessment, and data extractions were performed independently by pairs of authors. The primary inflammation outcomes were peak IL-6 and IL-8 concentrations in blood post-surgery. The primary clinical outcome was in-hospital or 30-day mortality. Treatment effects were expressed as risk ratios (RR) and standardised mean difference (SMD) with 95% confidence intervals (CI). Meta-analyses were performed using random effects models, and heterogeneity was assessed using I2. MAIN RESULTS A total of 40,255 participants from 328 RCTs were included in the synthesis. The effects of treatments on IL-6 (SMD -0.77, 95% CI -0.97 to -0.58, I2 = 92%) and IL-8 (SMD -0.92, 95% CI -1.20 to -0.65, I2 = 91%) were unclear due to heterogeneity. Heterogeneity for inflammation outcomes persisted across multiple sensitivity and moderator analyses. The pooled treatment effect for in-hospital or 30-day mortality was RR 0.78, 95% CI 0.68 to 0.91, I2 = 0%, suggesting a significant clinical benefit. There was little or no treatment effect on mortality when analyses were restricted to studies at low risk of bias. Post hoc analyses failed to demonstrate consistent treatment effects on inflammation and clinical outcomes. Levels of certainty for pooled treatment effects on the primary outcomes were very low. AUTHORS' CONCLUSIONS A systematic review of RCTs of organ protection interventions targeting innate immune system activation did not resolve uncertainty as to the effectiveness of these treatments, or the role of innate immunity in organ injury following cardiac surgery.
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Affiliation(s)
| | | | - Marius A Roman
- Department of Cardiovascular Sciences, University of Leicester, Leicester, UK
| | - Angelica Rizzello
- Department of Cardiovascular Sciences, University of Leicester, Leicester, UK
| | - Suraj Pathak
- Department of Cardiovascular Sciences, University of Leicester, Leicester, UK
| | - Joussi Ramzi
- Leicester Medical School, University of Leicester, Leicester, UK
| | - Carla Lucarelli
- Department of Cardiac Surgery, University of Verona, Verona, Italy
| | - Georgia Layton
- University Hospitals of Leicester NHS Trust, Leicester, UK
| | - Ayesha Butt
- Department of Cardiovascular Sciences, University of Leicester, Leicester, UK
| | - Florence Lai
- Department of Cardiovascular Sciences, University of Leicester, Leicester, UK
| | - Tracy Kumar
- Leicester Clinical Trials Unit, University of Leicester, Leicester, UK
| | - Marcin J Wozniak
- Department of Cardiovascular Sciences, University of Leicester, Leicester, UK
| | - Gavin J Murphy
- Department of Cardiovascular Sciences, University of Leicester, Leicester, UK
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Chai T, Zhuang X, Tian M, Yang X, Qiu Z, Xu S, Cai M, Lin Y, Chen L. Meta-Analysis: Shouldn't Prophylactic Corticosteroids be Administered During Cardiac Surgery with Cardiopulmonary Bypass? Front Surg 2022; 9:832205. [PMID: 35722531 PMCID: PMC9198450 DOI: 10.3389/fsurg.2022.832205] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2021] [Accepted: 05/02/2022] [Indexed: 12/04/2022] Open
Abstract
Background Corticosteroids can effectively inhibit systemic inflammation induced by cardiopulmonary bypass. Recently clinical trials and meta-analyses and current guidelines for cardiac surgery do not support corticosteroids prophylaxis during cardiac surgery because of an increase in myocardial infarction and no benefit for patients. The aim of this study is to determine whether specific corticosteroids dose ranges might provide clinical benefits without increasing myocardial infarction. Methods The PubMed, Web of Science, Embase, Clinical Trials, and Cochrane databases were searched for randomized controlled trials (RCTs) published before August 1, 2021. Results 88 RCTs with 18,416 patients (17,067 adults and 1,349 children) were identified. Relative to placebo and high-dose corticosteroids, low-dose corticosteroids (≤20 mg/kg hydrocortisone) during adult cardiac surgery did not increase the risks of myocardial infarction (odds ratio [OR]: 0.96, 95% confidence interval [CI]: 0.43-2.17; p = 0.93). However, low-dose corticosteroids were associated with lower risks of atrial fibrillation (OR: 0.58, 95% CI: 0.44-0.76; p < 0.0001) and kidney injury (OR: 0.29, 95% CI: 0.09-0.96; p = 0.04). Furthermore, low-dose corticosteroids significantly shortened the mechanical ventilation times (mean difference [MD]: -2.74 h, 95% CI: -4.14, -1.33; p = 0.0001), intensive care unit (ICU) stay (MD: -1.48 days, 95% CI: -2.73, -0.22; p = 0.02), and hospital stay (MD: -2.29 days, 95% CI: -4.51, -0.07; p = 0.04). Conclusion Low-dose corticosteroids prophylaxis during cardiac surgery provided significant benefits for adult patients, without increasing the risks of myocardial infarction and other complications.
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Affiliation(s)
- Tianci Chai
- Department of Cardiovascular Surgery, Fujian Medical University Union Hospital, Fuzhou, China
- Key Laboratory of Ministry of Education for Gastrointestinal Cancer, The School of Basic Medical Sciences, Fujian Medical University, Fuzhou, China
- Key Laboratory of Cardio-Thoracic Surgery (Fujian Medical University), Fujian Province University, Fuzhou, China
- Department of anesthesiology, Xinyi People’s Hospital, Xuzhou, China
| | - Xinghui Zhuang
- Department of Cardiovascular Surgery, Fujian Medical University Union Hospital, Fuzhou, China
- Key Laboratory of Ministry of Education for Gastrointestinal Cancer, The School of Basic Medical Sciences, Fujian Medical University, Fuzhou, China
- Key Laboratory of Cardio-Thoracic Surgery (Fujian Medical University), Fujian Province University, Fuzhou, China
| | - Mengyue Tian
- Key Laboratory of Ministry of Education for Gastrointestinal Cancer, The School of Basic Medical Sciences, Fujian Medical University, Fuzhou, China
| | - Xiaojie Yang
- Key Laboratory of Ministry of Education for Gastrointestinal Cancer, The School of Basic Medical Sciences, Fujian Medical University, Fuzhou, China
- Key Laboratory of Cardio-Thoracic Surgery (Fujian Medical University), Fujian Province University, Fuzhou, China
- Department of Thoracic Surgery, Fujian Medical University Union Hospital, Fuzhou, China
| | - Zhihuang Qiu
- Department of Cardiovascular Surgery, Fujian Medical University Union Hospital, Fuzhou, China
- Key Laboratory of Cardio-Thoracic Surgery (Fujian Medical University), Fujian Province University, Fuzhou, China
| | - Shurong Xu
- Nursing Department, Fujian Medical University Union Hospital, Fuzhou, China
| | - Meiling Cai
- Nursing Department, Fujian Medical University Union Hospital, Fuzhou, China
| | - Yanjuan Lin
- Nursing Department, Fujian Medical University Union Hospital, Fuzhou, China
| | - Liangwan Chen
- Department of Cardiovascular Surgery, Fujian Medical University Union Hospital, Fuzhou, China
- Key Laboratory of Cardio-Thoracic Surgery (Fujian Medical University), Fujian Province University, Fuzhou, China
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Justus G, Walker C, Rosenthal LM, Berger F, Miera O, Schmitt KRL. Immunodepression after CPB: Cytokine dynamics and clinics after pediatric cardiac surgery – A prospective trial. Cytokine 2019; 122:154018. [DOI: 10.1016/j.cyto.2017.03.017] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2016] [Revised: 03/23/2017] [Accepted: 03/31/2017] [Indexed: 12/23/2022]
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Dvirnik N, Belley-Cote E, Hanif H, Devereaux P, Lamy A, Dieleman J, Vincent J, Whitlock R. Steroids in cardiac surgery: a systematic review and meta-analysis. Br J Anaesth 2018; 120:657-667. [DOI: 10.1016/j.bja.2017.10.025] [Citation(s) in RCA: 47] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2016] [Revised: 10/16/2017] [Accepted: 10/26/2017] [Indexed: 11/27/2022] Open
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Xu F, Liu RQ, Cao R, Guo LT, Zhang N, Huang K, Cui Y, Li WN, Li L, Huang ZH. Perioperative plasma mitochondrial DNA dynamics and correlation with inflammation during infantile cardiopulmonary bypass. Indian Heart J 2017; 69:797-800. [PMID: 29174262 PMCID: PMC5717290 DOI: 10.1016/j.ihj.2017.03.009] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2016] [Revised: 03/05/2017] [Accepted: 03/19/2017] [Indexed: 02/05/2023] Open
Abstract
Objective Numerous studies in animals and humans have demonstrated that inflammatory mediators such as tumor necrosis factor (TNF)-α, interleukin (IL)-6, and IL-8 play a role in cardiopulmonary bypass (CPB), which might affect surgical outcomes. Plasma mitochondrial DNA (mtDNA), a recently discovered pro-inflammatory agent, is released by cells upon insult. This study aimed to detect changes in plasma mtDNA levels at different time points after infantile CPB and explore its potential association with inflammatory mediators. Methods In the present study, we analyzed the perioperative plasma mtDNA and inflammatory cytokine levels of 48 infants undergoing ventricular septal defect closure. Blood samples were collected before aortic cross-clamping (T1), at the end of CPB (T2), and 6 h (T3), 12 h (T4), and 24 h (T5) post-CPB. Reverse transcription–polymerase chain reaction and specific enzyme-linked immunosorbent assay were used to quantify the plasma mtDNA and inflammatory cytokines, respectively. Bivariate correlation analysis was used to determine the correlations between plasma mtDNA and inflammatory cytokines. Results Plasma mtDNA levels increased at T2 and peaked at T3. Significant positive correlations were found between peak plasma mtDNA (at T3) and several inflammatory biomarkers, including IL-6 (at T3) (r = 0.62, P < 0.001), IL-8 (at T2) (r = 0.53, P < 0.001), and TNF-α (at T3) (r = 0.61, P < 0.001). Conclusion Here we report that mtDNA may participate in a systemic inflammatory response to CPB.
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Affiliation(s)
- Fei Xu
- Department of Anesthesiology, Chengdu Women and Children's Central Hospital, Chongqing Medical University, Chengdu, Sichuan 610091, China
| | - Rui-Qi Liu
- Department of Burns and Plastic Surgery, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Rong Cao
- Department of Anesthesiology, Chengdu Women and Children's Central Hospital, Chongqing Medical University, Chengdu, Sichuan 610091, China
| | - Lang-Tao Guo
- Department of Anesthesiology, Chengdu Women and Children's Central Hospital, Chongqing Medical University, Chengdu, Sichuan 610091, China
| | - Ning Zhang
- Department of Anesthesiology, Chengdu Women and Children's Central Hospital, Chongqing Medical University, Chengdu, Sichuan 610091, China
| | - Ke Huang
- Department of Anesthesiology, Chengdu Women and Children's Central Hospital, Chongqing Medical University, Chengdu, Sichuan 610091, China
| | - Yu Cui
- Department of Anesthesiology, Chengdu Women and Children's Central Hospital, Chongqing Medical University, Chengdu, Sichuan 610091, China
| | - Wei-Na Li
- Department of Anesthesiology, Chengdu Women and Children's Central Hospital, Chongqing Medical University, Chengdu, Sichuan 610091, China
| | - Lei Li
- Department of Anesthesiology, Chengdu Women and Children's Central Hospital, Chongqing Medical University, Chengdu, Sichuan 610091, China
| | - Zheng-Hua Huang
- Department of Anesthesiology, Chengdu Women and Children's Central Hospital, Chongqing Medical University, Chengdu, Sichuan 610091, China.
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Baikoussis NG, Papakonstantinou NA, Verra C, Kakouris G, Chounti M, Hountis P, Dedeilias P, Argiriou M. Mechanisms of oxidative stress and myocardial protection during open-heart surgery. Ann Card Anaesth 2015; 18:555-64. [PMID: 26440242 PMCID: PMC4881677 DOI: 10.4103/0971-9784.166465] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2015] [Accepted: 08/10/2015] [Indexed: 11/25/2022] Open
Abstract
Cold heart protection via cardioplegia administration, limits the amount of oxygen demand. Systemic normothermia with warm cardioplegia was introduced due to the abundance of detrimental effects of hypothermia. A temperature of 32-33°C in combination with tepid blood cardioplegia of the same temperature appears to be protective enough for both; heart and brain. Reduction of nitric oxide (NO) concentration is in part responsible for myocardial injury after the cardioplegic cardiac arrest. Restoration of NO balance with exogenous NO supplementation has been shown useful to prevent inflammation and apoptosis. In this article, we discuss the "deleterious" effects of the oxidative stress of the extracorporeal circulation and the up-to-date theories of "ideal'' myocardial protection.
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Affiliation(s)
- Nikolaos G. Baikoussis
- Department of Cardiovascular and Thoracic Surgery, “Evangelismos” General Hospital of Athens, Athens, Greece
| | | | - Chrysoula Verra
- Department of Medical Biopathology, Patras General Hospital, Patras, Greece
| | - Georgios Kakouris
- Department of Medical Biopathology, Patras General Hospital, Patras, Greece
| | - Maria Chounti
- Nursing School - Technological Institute of Patras, Patras, Greece
| | - Panagiotis Hountis
- Department of Thoracic and Cardiovascular Surgery, Athens Naval and Veterans Hospital, Athens, Greece
| | - Panagiotis Dedeilias
- Department of Cardiovascular and Thoracic Surgery, “Evangelismos” General Hospital of Athens, Athens, Greece
| | - Michalis Argiriou
- Department of Cardiovascular and Thoracic Surgery, “Evangelismos” General Hospital of Athens, Athens, Greece
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Kapitein B, van Saet AW, Golab HD, de Hoog M, de Wildt S, Tibboel D, Bogers AJJC. Does pharmacotherapy influence the inflammatory responses during cardiopulmonary bypass in children? J Cardiovasc Pharmacol 2015; 64:191-7. [PMID: 24949583 DOI: 10.1097/fjc.0000000000000098] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
Cardiopulmonary bypass (CPB) induces a systemic inflammatory response syndrome (SIRS) by factors such as contact of the blood with the foreign surface of the extracorporeal circuit, hypothermia, reduction of pulmonary blood flow during CPB and endotoxemia. SIRS is maintained in the postoperative phase, co-occurring with a counter anti-inflammatory response syndrome. Research on the effects of drugs administered before the surgery, especially in the induction phase of anesthesia, as well as drugs used during extracorporeal circulation, has revealed that they greatly influence these postoperative inflammatory responses. A better understanding of these processes may not only improve postoperative recovery but also enable tailor-made pharmacotherapy, with both health and economic benefits. In this review, we describe the pathophysiology of SIRS and counter anti-inflammatory response syndrome in the light of CPB in children and the influence of drugs used on these syndromes.
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Affiliation(s)
- Berber Kapitein
- *Intensive Care Unit, Erasmus MC-Sophia Children's Hospital, Rotterdam, the Netherlands; †Department of Anesthesiology, Intensive Care Unit, Erasmus MC, Erasmus MC-Sophia Children's Hospital, Rotterdam, the Netherlands; and ‡Department of Cardiothoracic Surgery, Erasmus MC, Rotterdam, the Netherlands
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Protective effects of corticosteroids in coronary artery bypass graft surgery alone or combined with valvular surgery: an updated and comprehensive meta-analysis and systematic review. Interact Cardiovasc Thorac Surg 2015; 20:825-36. [DOI: 10.1093/icvts/ivv033] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2014] [Accepted: 01/26/2015] [Indexed: 11/14/2022] Open
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Liu C, Wang J, Yiu D, Liu K. The efficacy of glucocorticoids for the prevention of atrial fibrillation, or length of intensive care unite or hospital stay after cardiac surgery: a meta-analysis. Cardiovasc Ther 2014; 32:89-96. [PMID: 24495440 DOI: 10.1111/1755-5922.12062] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
Abstract
AIMS cardiopulmonary bypass and cardiac surgery are associated with a significant systemic inflammatory response that has been suggested playing a causative role in the development of perioperative atrial fibrillation (POAF). The goal of this meta-analysis was to determine the efficacy of glucocorticoid prophylaxis in preventing POAF, or length of intensive care unite (ICU) or hospital stay. METHODS A systematic electronic database literature search of Cochrane controlled trials register (2013, issue 4) and MEDLINE (1966 to April, 2013) was conducted using specific search terms for all relevant articles. Including criteria were: randomized controlled clinical trials, participants were adults (≥18 years of age) undergoing cardiac surgery, evaluated glucocorticoid prophylaxis in cardiac surgery with adequately reported data on incidence of POAF, or length of ICU or hospital stay. RESULTS Forty-two randomized controlled trials involving 7621 participants were included in the meta-analysis. Overall, glucocorticoids prophylaxis significantly lowered participants' risk of developing POAF (Relative Risk [RR] 0.77; 95% confidence interval [CI] 0.66-0.90), P < 0.01), reduced length of ICU stay by 0.25 day (95% CI -0.40 to -0.10, P < 0.01). Glucocorticoid prophylaxis in cardiac surgery was not associated with increased all-cause of infection (RR 0.68; 95% CI 0.58-0.78, P < 0.01) and mortality (RR 0.75; 95% CI 0.52-1.08, P = 0.12). CONCLUSIONS Pooled evidence suggests that glucocorticoid prophylaxis may reduce the incidence of POAF. The beneficial effect on POAF is associated with reduced length of ICU and hospital stay, and infection rate.
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Affiliation(s)
- Chao Liu
- The First Hospital of Hebei Medical University, Hebei Medical University, Shijiazhuang, China; Department of Pharmacology, Hebei Medical University, Shijiazhuang, China
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Steroids for surgery during cardiopulmonary bypass in adults: a meta-analysis. J Clin Anesth 2014; 26:36-45. [PMID: 24439905 DOI: 10.1016/j.jclinane.2013.08.006] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2013] [Revised: 08/29/2013] [Accepted: 08/29/2013] [Indexed: 11/22/2022]
Abstract
STUDY OBJECTIVE To evaluate the effect of steroid administration on myocardial infarction (MI), stroke, renal insufficiency, death, intensive care (ICU) length of stay (LOS) and hospital LOS of patients undergoing cardiopulmonary bypass (CPB). DESIGN Meta-analysis of parallel randomized controlled trials. SETTING University hospital. MEAUREMENTS A search was conducted in PubMed, EMBASE, MEDLINE(R) and the Cochrane Central Register of Controlled Trials of studies on adults undergoing surgery with CPB who received steroid administration. Effect size (risk ratio or mean difference) for MI, stroke, renal insufficiency, death, ICU LOS, and hospital LOS were evaluated. MAIN RESULTS 48 RCTs published between 1977 and 2012 were retained for analysis. Steroids had no effect on the MI risk ratio (RR) 0.91 (95% confidence interval [CI] 0.63, 1.32); death at 30 days RR 0.84 (0.59, 1.20); stroke RR 0.92 (0.60, 1.42) or renal insufficiency RR 0.83 (0.52, 1.32). Administration of steroids reduced ICU LOS (P = 0.00001; I(2) 87.5%) and hospital LOS (P = 0.03; I(2) 81.1%). Metaregressions showed that duration of steroid administration was correlated with the reduction in ICU LOS (P = 0.0004) and hospital LOS (P < 0.00001). CONCLUSIONS Increasing the duration of steroid administration may reduce ICU and hospital LOS greater than increasing the dose.
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Hall R. Identification of Inflammatory Mediators and Their Modulation by Strategies for the Management of the Systemic Inflammatory Response During Cardiac Surgery. J Cardiothorac Vasc Anesth 2013; 27:983-1033. [DOI: 10.1053/j.jvca.2012.09.013] [Citation(s) in RCA: 56] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/28/2012] [Indexed: 12/21/2022]
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Suezawa T, Aoki A, Kotani M, Tago M, Kobayashi O, Hirasaki A, Sano M, Kameda N, Mitsunaka H. Clinical benefits of methylprednisolone in off-pump coronary artery bypass surgery. Gen Thorac Cardiovasc Surg 2013; 61:455-9. [DOI: 10.1007/s11748-013-0206-8] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2012] [Accepted: 01/07/2013] [Indexed: 11/24/2022]
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Palojärvi A, Andersson S, Turpeinen U, Janér C, Petäjä J. Antenatal betamethasone associates with transient immunodepression in very low birth weight infants. Neonatology 2013; 104:275-82. [PMID: 24107413 DOI: 10.1159/000353964] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/10/2012] [Accepted: 06/24/2013] [Indexed: 11/19/2022]
Abstract
BACKGROUND Antenatal betamethasone (BM) treatment for mothers at risk for premature delivery is effective in reducing neonatal morbidity. Immunodepression, defined as monocyte human leukocyte antigen (HLA)-DR expression <60%, is common in patients in intensive care. In very low birth weight (VLBW) infants, immunodepression correlates with gestational age and may predispose to infections. OBJECTIVES To evaluate whether timing of antenatal BM associates with immunodepression in VLBW infants. METHODS We determined monocyte HLA-DR expression by flow cytometry and measured 13 cytokines, cortisol, and BM in plasma from 56 VLBW infants. We calculated total glucocorticoid index as the sum of BM and cortisol at the ratio 33.3:1. RESULTS HLA-DR expression both in cord (R(2) = 0.175, p = 0.033, n = 26) and on day 1 (R(2) = 0.125, p = 0.011, n = 51) showed an association with timing of BM. A short interval from BM to birth induced more pronounced and prolonged immunodepression, with lower HLA-DR% on postnatal day 7. On day 3, 25 infants (45%) met the criteria of immunodepression. HLA-DR expression correlated negatively with total glucocorticoid index (cord: R(2) = -0.573, p = 0.003, n = 13; day 1: R(2) = -0.213, p = 0.008, n = 32). Elapsed time from maternal BM correlated positively with concentrations of cytokines IL-6 and IL-10 on day 1. CONCLUSIONS In VLBW infants, antenatal BM associated with transient immunodepression in a time-dependent manner. Suppression of both anti- and proinflammatory cytokines occurred. These effects may lead to an increased risk for later infections.
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15
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Dieleman JM, van Paassen J, van Dijk D, Arbous MS, Kalkman CJ, Vandenbroucke JP, van der Heijden GJ, Dekkers OM. Prophylactic corticosteroids for cardiopulmonary bypass in adults. Cochrane Database Syst Rev 2011:CD005566. [PMID: 21563145 DOI: 10.1002/14651858.cd005566.pub3] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
BACKGROUND High-dose prophylactic corticosteroids are often administered during cardiac surgery. Their use, however, remains controversial, as no trials are available that have been sufficiently powered to draw conclusions on their effect on major clinical outcomes. OBJECTIVES The objective of this meta-analysis was to estimate the effect of prophylactic corticosteroids in cardiac surgery on mortality, cardiac and pulmonary complications. SEARCH STRATEGY Major medical databases (CENTRAL, MEDLINE, EMBASE, CINAHL and Web of Science) were systematically searched for randomised studies assessing the effect of corticosteroids in adult cardiac surgery. Database were searched for the full period covered, up to December 2009. No language restrictions were applied. SELECTION CRITERIA Randomised controlled trials comparing corticosteroid treatment to either placebo treatment or no treatment in adult cardiac surgery were selected. There were no restrictions with respect to length of the follow-up period. All selected studies qualified for pooling of results for one or more end-points. DATA COLLECTION AND ANALYSIS The processes of searching and selection for inclusion eligibility were performed independently by two authors. Also, quality assessment and data-extraction of selected studies were independently performed by two authors. The primary endpoints were mortality, cardiac and pulmonary complications. The main effect measure was the Peto odds ratio comparing corticosteroids to no treatment/placebo. MAIN RESULTS Fifty-four randomised studies, mostly of limited quality, were included. Altogether, 3615 patients were included in these studies. The pooled odds ratio for mortality was 1.12 (95% CI 0.65 to 1.92), showing no mortality reduction in patients treated with corticosteroids. The odds ratios for myocardial and pulmonary complications were 0.95, (95% CI 0.57 to 1.60) and 0.83 (95% CI 0.49 to 1.40), respectively. The use of a random effects model did not substantially influence study results. Analyses of secondary endpoints showed a reduction of atrial fibrillation and an increase in gastrointestinal bleeding in the corticosteroids group. AUTHORS' CONCLUSIONS This meta-analysis showed no beneficial effect of corticosteroid use on mortality, cardiac and pulmonary complications in cardiac surgery patients.
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Affiliation(s)
- Jan M Dieleman
- Division of Anesthesiology, Intensive Care and Emergency Medicine, University Medical Center Utrecht, PO Box 85500, mailstop: Q04.2.313, Utrecht, Netherlands, 3508 GA
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16
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Cappabianca G, Rotunno C, de Luca Tupputi Schinosa L, Ranieri VM, Paparella D. Protective effects of steroids in cardiac surgery: a meta-analysis of randomized double-blind trials. J Cardiothorac Vasc Anesth 2010; 25:156-65. [PMID: 20537923 DOI: 10.1053/j.jvca.2010.03.015] [Citation(s) in RCA: 54] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/17/2009] [Indexed: 11/11/2022]
Abstract
OBJECTIVE Cardiac surgery and cardiopulmonary bypass (CPB) induce an acute inflammatory response contributing to postoperative morbidity. The use of steroids as anti-inflammatory agents in surgery using CPB has been tested in many trials and has been shown to have good anti-inflammatory effects but no clear clinical advantages for the lack of an adequately powered sample size. The aim of this study was to evaluate the effects of steroid treatment on mortality and morbidity after cardiac surgery. DESIGN A systematic meta-analysis of randomized double-blind trials (RDBs). SETTING A university hospital. PARTICIPANTS Adult patients who underwent cardiac surgery. MEASUREMENTS AND MAIN RESULTS A trial search was performed through PubMed and Cochrane databases from 1966 to January 2009. Among 104 clinical trials reviewed, 31 RDB trials (1,974 patients) were considered suitable to be analyzed. A quality assessment of the trials was performed using the Jadad score. The types of steroid used in these trials were methylprednisolone (51.4%), dexamethasone (34.3%), hydrocortisone (5.7%), prednisolone (2.9%), or a combination of methylprednisolone and dexamethasone (5.7%). Steroid prophylaxis provided a protective effect preventing postoperative atrial fibrillation (odds ratio = 0.56; confidence interval [CI] 0.44-0.72, p < 0.0001), reducing postoperative blood loss (mean difference = -204.2 mL; CI from -287.4 to -121 mL; p < 0.0001), and reducing intensive care unit (mean difference = -6.6 hours; CI from -10.5 to -2.7 hours, p = 0.0007) and overall hospital stay (mean difference = -0.8 days; CI from -1.4 to -0.2 days, p = 0.01). Steroid prophylaxis had no effect on postoperative mortality, mechanical ventilation duration, re-exploration for bleeding, and postoperative infection. CONCLUSIONS A systematic review of RDB trials reveals that steroid prophylaxis may reduce morbidity after cardiac surgery and does not increase the risk of postoperative infections.
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Affiliation(s)
- Giangiuseppe Cappabianca
- Division of Cardiac Surgery, Department of Emergency and Organ Transplant, University of Bari, Bari, Italy
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17
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Kim OY, Monsel A, Bertrand M, Coriat P, Cavaillon JM, Adib-Conquy M. Differential down-regulation of HLA-DR on monocyte subpopulations during systemic inflammation. CRITICAL CARE : THE OFFICIAL JOURNAL OF THE CRITICAL CARE FORUM 2010; 14:R61. [PMID: 20385017 PMCID: PMC2887183 DOI: 10.1186/cc8959] [Citation(s) in RCA: 75] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/06/2010] [Revised: 02/17/2010] [Accepted: 04/13/2010] [Indexed: 01/09/2023]
Abstract
Introduction Decreased expression of human leukocyte antigen class II (HLA-DR) on monocytes is a hallmark of altered immune status in patients with a systemic inflammatory response syndrome (SIRS). So far, the analyses were mainly performed without taking into account monocytes subpopulations. Methods We studied this modification on CD14HIGH and CD14LOW monocytes of 20 SIRS patients undergoing abdominal aortic surgery (AAS), 20 patients undergoing carotid artery surgery (CAS), and 9 healthy controls, and we investigated mediators and intracellular molecules that may be involved in this process. Results HLA-DR on CD14HIGH monocytes started to decrease during surgery, after blood reperfusion, and was further reduced post-surgery. In contrast, HLA-DR expression on CD14LOW cells only decreased after surgery, and to a lesser extent than on CD14HIGH monocytes. Negative correlations were found between the reduction of HLA-DR expression and the change in cortisol levels for both subpopulations, whereas a negative correlation between interleukin-10 (IL-10) levels and HLA-DR modulation was only observed for CD14HIGH cells. In accordance with these ex vivo results, HLA-DR on CD14HIGH and CD14LOW monocytes of healthy donors was reduced following incubation with hydrocortisone, whereas IL-10 only acted on CD14HIGH subpopulation. Furthermore, flow cytometry revealed that the expression of IL-10 receptor was higher on CD14HIGH versus CD14LOW monocytes. In addition, hydrocortisone, and to a lesser extent IL-10, reversed the up-regulation of HLA-DR induced by bacterial products. Finally, membrane-associated RING-CH-1 protein (MARCH1) mRNA, a negative regulator of MHC class II, was up-regulated in monocytes of AAS patients on Day 1 post-surgery, and in those of healthy subjects exposed to hydrocortisone. Conclusions This study reveals that HLA-DR expression is modulated differently on CD14HIGH (classical) versus CD14LOW (inflammatory) monocytes after systemic inflammation.
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Affiliation(s)
- Oh Yoen Kim
- Unit Cytokines & Inflammation, Institut Pasteur, 28 rue Dr, Roux, Paris, France.
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18
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Inadequate cytoplasmatic calcium signals in alveolar macrophages after cardiac surgery. Inflamm Res 2010; 59:767-73. [DOI: 10.1007/s00011-010-0188-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2009] [Revised: 02/03/2010] [Accepted: 03/15/2010] [Indexed: 11/27/2022] Open
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Microcirculatory Alterations in Cardiac Surgery: Effects of Cardiopulmonary Bypass and Anesthesia. Ann Thorac Surg 2009; 88:1396-403. [DOI: 10.1016/j.athoracsur.2009.07.002] [Citation(s) in RCA: 142] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/17/2009] [Revised: 06/26/2009] [Accepted: 07/02/2009] [Indexed: 11/22/2022]
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20
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Abstract
Background—
Cardiopulmonary bypass and cardiac surgery are associated with a significant systemic inflammatory response that may increase postoperative complications. This meta-analysis assessed whether the benefits and risks of corticosteroid use were dose dependent in adult cardiac surgery.
Methods and Results—
Randomized controlled trials of the use of corticosteroid prophylaxis in adult cardiac surgery (>18 years of age) requiring cardiopulmonary bypass were selected from MEDLINE (1966 to August 1, 2008), EMBASE (1988 to August 1, 2008), and the Cochrane controlled trials register without any language restrictions. A total of 3323 patients from 50 randomized controlled trials were identified and subject to meta-analysis. Corticosteroid prophylaxis reduced the risk of atrial fibrillation (25.1% versus 35.1%; number needed to treat, 10; relative risk, 0.74; 95% confidence interval [CI], 0.63 to 0.86;
P
<0.01) and length of stay in the intensive care unit (weighted mean difference, −0.37 days; 95% CI, −0.21 to −0.52;
P
<0.01) and hospital (weighted mean difference, −0.66 days; 95% CI, −0.77 to −1.25;
P
=0.03) compared with placebo. The use of corticosteroid was not associated with an increased risk of all-cause infection (relative risk, 0.93; 95% CI, 0.61 to 1.41;
P
=0.73), but hyperglycemia requiring insulin infusion after corticosteroid prophylaxis was common (28.2%; relative risk, 1.49; 95% CI, 1.11 to 2.01;
P
<0.01). No additional benefits were found on all outcomes beyond a total dose of 1000 mg hydrocortisone, and very high doses of corticosteroid were associated with prolonged mechanical ventilation.
Conclusions—
Evidence suggests that low-dose corticosteroid is as effective as high-dose corticosteroid in reducing the risk of atrial fibrillation and duration of mechanical ventilation but with fewer potential side effects in adult cardiac surgery.
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Affiliation(s)
- Kwok M. Ho
- From the Department of Intensive Care Medicine, Royal Perth Hospital (K.M.H., J.A.T.), and School of Population Health, University of Western Australia (K.M.H.), Perth, Australia
| | - Jen Aik Tan
- From the Department of Intensive Care Medicine, Royal Perth Hospital (K.M.H., J.A.T.), and School of Population Health, University of Western Australia (K.M.H.), Perth, Australia
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21
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Antoniades CG, Berry PA, Wendon JA, Vergani D. The importance of immune dysfunction in determining outcome in acute liver failure. J Hepatol 2008; 49:845-61. [PMID: 18801592 DOI: 10.1016/j.jhep.2008.08.009] [Citation(s) in RCA: 242] [Impact Index Per Article: 15.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Acute liver failure (ALF) shares striking similarities with septic shock with regard to the features of systemic inflammation, progression to multiple organ dysfunction and functional immunoparesis. While the existence of opposing systemic pro- and anti-inflammatory profiles resulting in organ failure and immune dysfunction are well recognised in septic shock, characterization of these processes in ALF has only recently been described. This review explores the evolution of the systemic inflammation in acute liver failure, its relation to disease progression, exacerbation of liver injury and development of innate immune dysfunction and extra-hepatic organ failure as sequelae. Defects in innate immunity are described in hepatic and extra-hepatic compartments. Clinical studies measuring levels of pro- and anti-inflammatory cytokines and expression of the antigen presentation molecule HLA-DR on monocytes, in combination with ex-vivo experiments, demonstrate that the persistence of a compensatory anti-inflammatory response syndrome, leading to functional monocyte deactivation, is a central event in the evolution of systemic immune dysfunction. Accurate immune profiling in ALF may permit the development of immunomodulatory strategies in order to improve outcome in this condition.
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Tavares-Murta BM, Cordeiro AO, Murta EFC, Cunha FDQ, Bisinotto FMB. Effect of myocardial protection and perfusion temperature on production of cytokines and nitric oxide during cardiopulmonary bypass. Acta Cir Bras 2008; 22:243-50. [PMID: 17625660 DOI: 10.1590/s0102-86502007000400003] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2007] [Accepted: 06/15/2007] [Indexed: 11/22/2022] Open
Abstract
PURPOSE To investigate the effects of different conditions used during cardiopulmonary bypass (CPB) surgery on accompanying production of cytokine and nitric oxide (NO). METHODS Patients undergoing CPB for the first time were prospectively enrolled and divided into two groups according to CPB parameters performed: i) normothermia (36.5-37 degrees C) with blood cardioplegia (NB group, n=10) and ii) hypothermia (29-31 degrees C) with crystalloid cardioplegia (HC group, n=10). Plasma samples obtained following intubation (baseline), during (5 and 30 min) and after (4 and 24 h) CPB were assayed for cytokines (ELISA) and NO metabolites (Griess reaction). RESULTS Peak concentrations of interleukin (IL)-6 and IL-8 were reached at 4 h post CPB in both groups, but in the HC group those levels increased earlier and persisted for longer (24 h) compared to baseline (P < 0.05). IL-10 levels also increased at 4 h compared to baseline, but only significantly so in the HC group. NO metabolites were reduced in HC group at all time points compared to baseline (P < 0.05), while no significant differences were detected in the NB group. CONCLUSION The association between increased systemic levels of cytokines and reduced NO production in the HC group suggests that different myocardial protection and/or perfusion temperature used during CPB may contribute to the extent of inflammatory response.
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Abstract
Proper immunologic balance between pro- and anti-inflammatory forces is necessary for recovery from critical illness. Persistence of a marked compensatory anti-inflammatory innate immune response after an insult is termed immunoparalysis. Critically ill patients demonstrating prolonged, severe reductions in monocyte HLA-DR expression or ex vivo tumor necrosis factor alpha production are at high risk for nosocomial infection and death. Reversal of immunoparalysis can be accomplished through the administration of immunostimulatory agents or tapering of exogenous immunosuppression. Evidence suggests that this may be associated with improved clinical outcomes. Immune-monitoring protocols are needed to identify patients who may benefit from immunomodulatory trials.
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Affiliation(s)
- W. Joshua Frazier
- Critical Care Medicine, Nationwide Children’s Hospital, Columbus, Ohio
- Department of Pediatrics, Section of Critical Care Medicine, The Ohio State University College of Medicine, Columbus, Ohio
- The Research Institute at Nationwide Children’s Hospital, Columbus, Ohio
| | - Mark W. Hall
- Critical Care Medicine, Nationwide Children’s Hospital, Columbus, Ohio
- Department of Pediatrics, Section of Critical Care Medicine, The Ohio State University College of Medicine, Columbus, Ohio
- The Research Institute at Nationwide Children’s Hospital, Columbus, Ohio
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24
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Rinder CS, Smith MJ, Rinder HM, Cortright DN, Brodbeck RM, Krause JE, Smith BR. Leukocyte effects of C5a-receptor blockade during simulated extracorporeal circulation. Ann Thorac Surg 2007; 83:146-52. [PMID: 17184649 DOI: 10.1016/j.athoracsur.2006.08.019] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/26/2006] [Revised: 08/03/2006] [Accepted: 08/04/2006] [Indexed: 12/22/2022]
Abstract
BACKGROUND Distinct pathways of leukocyte activation during simulated cardiopulmonary bypass are mediated by the complement C5a anaphylatoxin. We hypothesized that a human C5a receptor antagonist would specifically inhibit the inflammatory response of neutrophils to simulated extracorporeal circulation, while preserving the C5b-9 pathway for innate immunity. METHODS An in vitro extracorporeal circuit recirculated fresh heparinized whole blood through a membrane oxygenator with and without addition of a small molecule human C5a receptor antagonist. Samples were periodically drawn over 90 minutes for complement and leukocyte activation studies. RESULTS Addition of the C5a receptor antagonist to simulated extracorporeal circulation abrogated both neutrophil CD11b upregulation and interleukin 8 release (p < 0.01 for both), despite full generation of C3a and C5b-9; however, elastase release from neutrophils was unaffected. Although C5a receptor blockade only trended toward inhibiting monocyte CD11b upregulation (p = 0.09), circuit clearance of both monocytes (p = 0.04) and neutrophils (p = 0.01) was significantly decreased. In addition, the C5a receptor antagonist completely blocked both neutrophil-platelet and monocyte-platelet conjugate formation (p < 0.001 for both), without affecting platelet P-selectin expression. CONCLUSIONS C5a receptor blockade during simulated extracorporeal circulation completely blocked neutrophil beta2 integrin upregulation and induction of plasma interleukin 8, suggesting an acute downregulatory effect on neutrophil chemotaxis-related pathways, while preserving terminal complement generation and neutrophil elastase release. Inhibition of leukocyte-platelet conjugate formation suggests a novel function for leukocyte adhesive receptors, possibly related to preservation of elastase generation.
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Affiliation(s)
- Christine S Rinder
- Department of Anesthesiology, Yale University School of Medicine, New Haven, Connecticut 06520-8051, USA.
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25
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Schneider C, Volk T. Endothelial Ca2+ signal transduction is altered by postoperative serum from patients undergoing coronary surgery with cardiopulmonary bypass. Anesth Analg 2006; 102:1630-7. [PMID: 16717299 DOI: 10.1213/01.ane.0000216297.58781.8d] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Endothelial dysfunction after surgery may be caused by alterations in the intracellular signaling properties of endothelial cells. Functional alterations are believed to be systemic and dependent on the amount of invasiveness. This led us to assume that there would be a mediator in the blood. Therefore, we investigated the influence of perioperative serum obtained from patients undergoing highly invasive surgical interventions (cardiac surgery [CS] with cardiopulmonary bypass) and less invasiveness (total joint arthroplasty [TJA]) on endothelial single cell Ca2+ responses. Aortic endothelial cells were incubated with preoperative and postoperative serum samples from 26 patients undergoing CS and from 15 patients undergoing TJA. Adenosine triphosphate (100 microM)-induced alterations in FURA-2 fluorescence was used to measure intracellular Ca2+ in single cells. In CS samples the induced [Ca2+]i signals were enhanced by postoperative serum (peak levels: 96 +/- 41 FU versus 116 +/- 45 FU; P < 0.05). These postoperative enhancements were absent in TJA patients serum. Preincubation of CS samples with nifedipine to block voltage gated Ca2+ channels did not alter this effect, but the absence of extracellular Ca2+ abolished the increased response from postoperative CS serum exposure. Ca2+ entry probed with Mn2+ quenching was increased in endothelial cells exposed with postoperative CS serum and Ca2+ entry correlated with postoperative circulating interleukin-6 levels (P < 0.007). Endothelial functional alterations after CS with cardiopulmonary bypass are attributable, in part, to systemic factors present in serum that lead to specific endothelial enhanced Ca2+-signaling. This enhancement can be separated in vitro as an increased Ca2+ entry not present in serum from patients recovering from TJA.
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Affiliation(s)
- Crispin Schneider
- Department of Anesthesiology and Intensive Care Medicine, Charitè-Universitätsmedizin Berlin, Berlin, Germany
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26
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Tselentakis EV, Woodford E, Chandy J, Gaudette GR, Saltman AE. Inflammation effects on the electrical properties of atrial tissue and inducibility of postoperative atrial fibrillation. J Surg Res 2006; 135:68-75. [PMID: 16650868 DOI: 10.1016/j.jss.2006.03.024] [Citation(s) in RCA: 84] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2005] [Revised: 12/29/2005] [Accepted: 03/11/2006] [Indexed: 01/19/2023]
Abstract
BACKGROUND Atrial fibrillation is the most common complication after cardiac surgery. Postoperative atrial fibrillation (PAF) has been shown to increase length of stay, morbidity, and mortality. Because the clinical behavior of PAF parallels that of inflammation following surgery, we investigated the effect of the inflammatory mediator arachidonic acid on the electrical behavior of normal atrial tissue in vitro and assessed the efficacy of the topical application of anti-inflammatory drugs at suppressing PAF in an animal model. METHODS To study changes in electrical behavior from inflammation, the conduction properties of six normal canine right atrial appendages were quantified as a function of the direction of impulse propagation with and without 80 mum arachidonic acid. To study the effect of topical anti-inflammatory drugs, 24 adult mongrel dogs were prepared according to the model of sterile talc pericarditis. Nine dogs received talc alone (T), seven received talc combined with 600 mg ibuprofen (T + I), and eight received talc combined with 10 mg methylprednisolone (T + M). Three days following preparation, programmed electrical stimulation was performed to quantify conduction characteristics and to attempt the induction of atrial fibrillation (AF). RESULTS In vitro, arachidonic acid produced an anisotropic and rapidly reversible 36.1 +/- 3.4% (P = 0.01) decrease in conduction velocity transverse to the long axis only. In vivo, both ibuprofen and methylprednisolone significantly reduced the incidence of sustained AF (from 56 to 0% T + I and 12% T + M, respectively, P = 0.02). No differences in conduction velocities or refractory periods were seen during sinus rhythm among the groups. CONCLUSIONS Acute inflammation as mimicked by arachidonic acid slows conduction anisotropically, mainly transverse to the long axis of the atrial myocardial fibers. This may set the stage for reentry. Preventing inflammation in vivo by the topical application of anti-inflammatory drugs supports this hypothesis, suggesting a possible role for inflammation in the genesis of postoperative atrial fibrillation and shedding light on the mechanism underlying PAF.
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Affiliation(s)
- E Victor Tselentakis
- Department of Biomedical Engineering, State University of New York at Stony Brook, Stony Brook, New York, USA
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27
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Sümegi A, Antal-Szalmás P, Aleksza M, Kovács I, Sipka S, Zeher M, Kiss E, Szegedi G. Glucocorticosteroid therapy decreases CD14-expression and CD14-mediated LPS-binding and activation of monocytes in patients suffering from systemic lupus erythematosus. Clin Immunol 2005; 117:271-9. [PMID: 16316784 DOI: 10.1016/j.clim.2005.09.002] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2004] [Revised: 08/31/2005] [Accepted: 09/01/2005] [Indexed: 11/18/2022]
Abstract
In order to study the possible action of glucocorticosteroids (GCS) on the CD14/Toll like receptor mediated activation of monocytes the CD14-expression, CD14-mediated LPS binding and activation of these cells of patients suffering from Systemic Lupus Erythematosus receiving no, low dose or pulse steroid treatment was studied. The CD14-expression was determined on whole blood monocytes by flow cytometry, while the LPS-binding of an FITC-LPS preparate and the LPS-induced TNFalpha secretion were tested on isolated monocytes. The CD14-dependent and -independent LPS-binding and activation were evaluated with the help of a blocking anti-CD14 mAb. Our results showed that the CD14-expression, CD14-dependent LPS-binding and activation were significantly inhibited by the in vivo applied pulse steroid therapy. In contrast, the CD14-independent LPS-binding and activation were not altered by the GCS treatment. Our data provide further in vivo evidence for a possible new way of GCS therapy is able to initiate its anti-inflammatory action.
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Affiliation(s)
- Andrea Sümegi
- Department of Clinical Biochemistry and Molecular Pathology, Medical and Health Science Center, University of Debrecen, Nagyerdei str. 98., Debrecen-4012, Hungary.
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Gessler P, Pretre R, Bürki C, Rousson V, Frey B, Nadal D. Monocyte function-associated antigen expression during and after pediatric cardiac surgery. J Thorac Cardiovasc Surg 2005; 130:54-60. [PMID: 15999041 DOI: 10.1016/j.jtcvs.2005.01.008] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
OBJECTIVE Systemic inflammatory response syndrome and infectious complications are major causes of morbidity and mortality after cardiopulmonary bypass. Recent work in adult patients suggests that the balance between proinflammatory and anti-inflammatory mediators is important. We hypothesized that the expression of different function-related receptors on circulating monocytes might reflect the net response of the inflammatory reaction. METHODS We performed a prospective and observational study in a tertiary pediatric cardiac center in a population of children (n = 40) undergoing elective cardiac surgery. Expression of receptors on the surface of monocytes was assessed before, during, and after surgical intervention. RESULTS Early monocyte activation was demonstrated by changes of the expression of the chemokine receptor CCR2, which was inversely correlated with plasma levels of monocyte chemotactic protein 1 (rho = -0.54, P = .002). High levels of monocyte chemotactic protein 1 were found in children with high expression of the adhesion receptor CD11b/CD18 on circulating monocytes. The intensity of human leukocyte antigen DR expression rapidly decreased in all children after the onset of cardiopulmonary bypass ( P < .001). Low human leukocyte antigen DR expression was correlated with increased plasma levels of interleukin 10 postoperatively. Children who had signs of bacterial pneumonia postoperatively had lower levels of human leukocyte antigen DR expression before surgical intervention (relative risk, 13.3; P = .007). CONCLUSIONS The expression of monocyte function-related receptors is altered after cardiac surgery. Early activation of monocytes by monocyte chemotactic protein 1 possibly released from the heart is followed by an anti-inflammatory response with suppression of monocyte human leukocyte antigen DR expression. The increased risk of bacterial infection after pediatric cardiac surgery can be anticipated by surveillance of monocyte function before surgical intervention.
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Affiliation(s)
- Peter Gessler
- Divisions of Pediatric Intensive Care Medicine, University Children's Hospital of Zurich, Steinwiesstrasse 75, CH-8032 Zurich, Switzerland.
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Arkader R, Troster EJ, Abellan DM, Lopes MR, Júnior RR, Carcillo JA, Okay TS. Procalcitonin and C-reactive protein kinetics in postoperative pediatric cardiac surgical patients. J Cardiothorac Vasc Anesth 2004; 18:160-5. [PMID: 15073705 DOI: 10.1053/j.jvca.2004.01.021] [Citation(s) in RCA: 47] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
OBJECTIVE To determine the kinetics of procalcitonin (PCT) and C-reactive protein (CRP) concentration after pediatric cardiac surgery with cardiopulmonary bypass. DESIGN Prospective, clinical cohort study. SETTING A fifteen-bed tertiary-care pediatric intensive care unit. PATIENTS Fourteen pediatric patients admitted for cardiac surgery. MEASUREMENTS AND MAIN RESULTS Serum PCT and CRP were measured before cardiopulmonary bypass (CPB); after CPB; and on the first, second, and third days after surgery by means of immunoluminometry and nephelometry, respectively. Reference values for systemic inflammatory response syndrome are 0.5 to 2.0 ng/mL for PCT and <5 mg/L for CRP. Baseline serum PCT and CRP concentrations were 0.24 +/- 0.13 ng/mL and 4.06 +/- 3.60 mg/L (median 25th percentile-75th percentile), respectively. PCT concentrations increased progressively from the end of CPB (0.62 +/- 0.30 ng/mL), peaked at 24 hours postoperatively (POD1) (0.77 +/- 0.49 ng/mL), and began to decrease at 48 hours or POD2 (0.35 +/- 0.21 ng/mL). CRP increased just after CPB (58.82 +/- 42.23 mg/L) and decreased after 72 hours (7.09 +/- 9.81 mg/L). CONCLUSION An increment of both PCT and CRP was observed just after CPB. However, PCT values remained within reference values, whereas CRP concentrations increased significantly after CPB until the third day. These preliminary results suggest that PCT was more effective than CRP to monitor patients with SIRS and a favorable outcome.
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Affiliation(s)
- Ronaldo Arkader
- Department of Pediatrics, School of Medicine, University of São Paulo, São Paulo, Brazil
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Volk T, Schenk M, Voigt K, Tohtz S, Putzier M, Kox WJ. Postoperative Epidural Anesthesia Preserves Lymphocyte, but Not Monocyte, Immune Function After Major Spine Surgery. Anesth Analg 2004; 98:1086-1092. [PMID: 15041604 DOI: 10.1213/01.ane.0000104586.12700.3a] [Citation(s) in RCA: 64] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
UNLABELLED Extensive spine surgery is associated with postsurgical pain. Epidural pain therapy may reduce postoperative stress responses and thereby influence immune functions. In a randomized, controlled, double-blinded prospective trial, 54 patients received either conventional patient-controlled IV analgesia (PCIA; morphine 3 mg/15 min) or patient-controlled epidural analgesia (PCEA; 0.125% ropivacaine plus sufentanil 1 microg/mL at a base rate of 12 mL/h and bolus application of 5 mL/15 min). Circulating cytokines, C-reactive protein (CRP), cortisol, and cell-surface receptor expression of immune cells (cluster of differentiation [CD]14, human leukocyte antigen-DR, CD86, CD71, CD3, CD4, CD8, CD16, and CD19) were measured perioperatively to characterize immunological functions. PCEA, compared with PCIA, had no influence on altered levels of circulating cytokines (interleukin (IL)-6, IL-8, IL-10, tumor necrosis factor-alpha, monocyte chemoattractant protein-1, and macrophage inhibitory factor) or indicators of the stress response (CRP and cortisol). Also, no significant difference was found in monocyte numbers or their human leukocyte antigen-DR, CD86, or CD71 expression. In contrast, the postoperative decrease in B lymphocytes and T-helper cells was significant in the PCEA group. Natural killer cells decreased significantly in patients receiving PCEA compared with PCIA. Therefore, postoperative epidural pain therapy has no influence on monocyte functions but reduces natural killer cells and preserves B-cell and T-helper cell populations. Epidural analgesia thus influences the specific rather than the innate immune system and potentially blunts the postsurgical lymphocyte depression, which is relevant for infectious resistance. IMPLICATIONS Epidural analgesia affects the immune system. Postoperative epidural analgesia, compared with conventional IV opioid therapy, preserves lymphocyte rather than monocyte functions. An improvement of postoperative immune function by epidural analgesia therefore may improve postoperative resistance to infectious complications or to chronic pain states.
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Affiliation(s)
- Thomas Volk
- Departments of *Anesthesiology and Intensive Care and †Orthopedic Surgery, University Hospital Charité, Campus Mitte, Humboldt-University, Berlin, Germany
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Volk T, Döpfmer UR, Schmutzler M, Rimpau S, Schnitzler H, Konertz W, Hoeflich C, Döcke WD, Spies CD, Volk HD, Kox WJ. Stress induced IL-10 does not seem to be essential for early monocyte deactivation following cardiac surgery. Cytokine 2003; 24:237-43. [PMID: 14609565 DOI: 10.1016/s1043-4666(03)00090-5] [Citation(s) in RCA: 37] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
An increase in circulating levels of IL-10 is believed to contribute to immunosuppression caused by major surgery. Cortisol and catecholamines have been shown to be important costimulatory factors for IL-10 secretion in humans. As thoracic epidural block (TEB) should blunt the perioperative increases in cortisol and catecholamines we investigated whether IL-10 secretion is influenced by TEB. Twenty-six patients undergoing coronary artery bypass graft surgery using cardiopulmonary bypass were randomized to receive either general anesthesia (GA) or GA plus TEB. Sensory and pain levels were measured to demonstrate clinical effectiveness. Plasma concentrations of epinephrine, norepinephrine, cortisol, IL-6 and IL-10 as well as monocyte surface expression of HLA-DR and their ex vivo capacity to release TNF-alpha after LPS stimulation were measured perioperatively. TEB was clinically effective and patients receiving TEB showed decreased circulating levels of IL-10. However, this decrease was independent of decreased levels of cortisol or epinephrine. No influence of TEB on IL-6 levels, monocyte capacity to ex vivo release TNF-alpha upon LPS stimulation or their expression of HLA-DR was found. In conclusion, high TEB reduces antiinflammatory immune suppressing mediators including IL-10 and stress mediators. At least in cardiac surgery patients the monocyte functional depression is not related to systemic release of IL-10 and the influence of cortisol or epinephrine is less important for early monocyte deactivation than what in vitro and animal models have suggested.
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Affiliation(s)
- Thomas Volk
- Department of Anaesthesiology and Intensive Therapy, University Hospital Charité, Schumannstrasse 20/21, 10117 Berlin, Germany.
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Chong AJ, Hampton CR, Verrier ED. Microvascular Inflammatory Response in Cardiac Surgery. Semin Cardiothorac Vasc Anesth 2003. [DOI: 10.1177/108925320300700308] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Cardiac surgical procedures, with or without cardiopulmonary bypass, elicit a systemic inflammatory response in patients that induces the elaboration of multiple cytokines, chemokines, adhesion molecules, and destructive enzymes. This inflammatory reaction involves multiple interdependent and redundant cell types and humoral cascades, which allows for amplification and positive feedback at numerous steps. This systemic inflammatory response ultimately results in a broad spectrum of clinical manifestations, with multiple organ failure being the most severe form. Investigative efforts have focused on understanding the mechanism of this systemic inflammatory response syndrome in order to develop potential therapeutic targets to inhibit it, thereby possibly decreasing postoperative morbidity and mortality. Multiple therapeutic methods have been investigated, including pharmacologic inhibitors and modifications of surgical technique and the cardiopulmonary bypass circuit. Although studies have demonstrated that the use of these therapies in experimental and clinical settings has attenuated the systemic inflammatory response, they have failed to conclusively show clinical benefit from these therapies. These therapies may be too specific to minimize the deleterious effects of a systemic inflammatory response that results from the activation of multiple, interdependent, and redundant inflammatory cascades and cell types. Hence, further studies that investigate the molecular and cellular events underlying the systemic inflammatory response syndrome and the resultant effects of anti-inflammatory therapies are warranted to ultimately achieve improvements in clinical outcome after cardiac surgical procedures.
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Affiliation(s)
| | | | - Edward D. Verrier
- Division of Cardiothoracic Surgery, The University of Washington, Seattle, Washington
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Abstract
Initially after injury, the innate/proinflammatory and some aspects of the acquired immune response are up-regulated to maintain a defense against foreign pathogens, clear tissue debris present at the wound site, and orchestrate aspects of tissue remodeling, cell proliferation and angiogenic process, associated with the wound response. However, for proper wound healing to progress, this initial inflammatory response has to be regulated or shut down so as to allow for the reestablishment of matrix, recellularization, and tissue remodeling. Inability to properly resolve the extent of innate/acquired response at a site of injury can lead to poor wound healing, immune suppression, and recurrent infectious episodes. This review attempts to summarize information on regulatory mechanisms that are thought to be involved in controlling/resolving innate or acquired immune responses so as to provide a framework for use in thinking about the impact these processes and their manipulation may have on wound healing and its potential management.
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Affiliation(s)
- Alfred Ayala
- Department of Surgery, Brown University School of Medicine and Rhode Island Hospital, Providence, 02903, USA.
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Schwartz SM, Duffy JY, Pearl JM, Goins S, Wagner CJ, Nelson DP. Glucocorticoids preserve calpastatin and troponin I during cardiopulmonary bypass in immature pigs. Pediatr Res 2003; 54:91-7. [PMID: 12646718 DOI: 10.1203/01.pdr.0000065730.79610.7d] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Degradation of troponin I (TnI) by calpain occurs with myocardial stunning in ischemia-reperfusion injury. Glucocorticoids attenuate myocardial ischemia-reperfusion injury, but their effect on TnI degradation is unknown. A piglet model was used to test the hypotheses that cardiopulmonary bypass (CPB) and deep hypothermic circulatory arrest (DHCA) are associated with TnI degradation and that TnI alterations could be prevented by glucocorticoid treatment. Piglets were cooled to 18 degrees C, subjected to 2 h of circulatory arrest, rewarmed to 37 degrees C, and allowed to recover for 2 h. Methylprednisolone was administered 6 h before surgery (3 0 mg/kg) and at initiation of CPB (30 mg/kg). The untreated group received saline. Left ventricular tissue was collected after recovery and analyzed by Western blot for TnI, calpain, and calpastatin (the natural inhibitor of calpain). CPB/DHCA animals had 27.4 +/- 0.2% of total detected TnI present in degraded form. Glucocorticoid treatment significantly decreased the percentage of degraded TnI (12.0 +/- 0.1%, p < 0.05). Calpain I and calpain II increased after CPB/DHCA compared with non-CPB/DHCA controls (p < 0.05), with or without glucocorticoid treatment. Calpastatin significantly decreased in untreated CPB/DHCA animals compared with non-CPB/DHCA controls (p < 0.05), but levels were preserved by glucocorticoids. Glucocorticoids were associated with preservation of maximum rate of increase of left ventricular pressure at 95 +/- 10% of baseline, whereas maximum rate of increase of left ventricular pressure decreased to 62 +/- 12% of baseline without steroids. TnI degradation occurs after CPB/DHCA in neonatal pigs. Reduction in reperfusion injury by glucocorticoids may depend partly on preservation of calpastatin activity and intact TnI.
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Affiliation(s)
- Steven M Schwartz
- Division of Cardiology, Children's Hospital Medical Center, Cincinnati, OH 45229-3039, USA.
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Vaagenes P, Gundersen Y, Opstad PK. Rapid rewarming after mild hypothermia accentuates the inflammatory response after acute volume controlled haemorrhage in spontaneously breathing rats. Resuscitation 2003; 58:103-12. [PMID: 12867316 DOI: 10.1016/s0300-9572(03)00102-3] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Accidental hypothermia is a common companion of trauma/haemorrhage, and several clinical studies have identified reduced body temperature as an independent risk predisposing to increased morbidity and mortality. Accordingly, the majority of trauma care guidelines prescribe early and aggressive rewarming of hypothermic patients. Enzyme reactions are generally downregulated at temperatures below 37 degrees C, including most of those responsible for the inflammatory response. The rationale for adhering to these recommendations uncritically may therefore be questioned. In a rat model of mild hypothermia and haemorrhagic shock we wanted to compare the influence of rapid rewarming with persistently reduced temperature on the synthesis of early inflammatory mediators and organ function. Thirty-four male albino Sprague-Dawley rats were studied. Withdrawal of 2.5 ml blood/100 g body weight was performed over 10 min, with simultaneous reduction of body temperature to 32.5-33.5 degrees C. Seventy-five minutes after initiation of bleeding, two-thirds of the shed blood was retransfused. One group (n=17) was rewarmed to normothermia, the other (n=17) was kept hypothermic. The study was terminated after an observation period of 2 h. At the end of the study the rewarmed animals had a significantly lower mean arterial pressure, higher heart rate, higher synthesis of reactive oxygen species from peritoneal phagocytes, increased circulating levels of nitric oxide, and higher values of the organ markers aspartate aminotransferase and urea. The pro-inflammatory cytokines TNF-alpha and IL-6, the anti-inflammatory cytokine IL-10, the organ markers alanine aminotransferase, alpha-glutathione S-transferase and creatinine, as well as organ injury scores were equal in both groups. Three rewarmed rats died prematurely, versus one hypothermic animal. In conclusion, the results suggest that during the early stages after haemorrhagic shock, rapid rewarming from mild hypothermia may have unfavourable effects both on basic haemodynamic variables, and on the internal inflammatory environment of cells and tissues.
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Affiliation(s)
- Per Vaagenes
- Norwegian Defence Research Establishment, Division of Protection and Material, N-2027 Kjeller, Norway.
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Gormley SMC, Armstrong MA, McMurray TJ, McBride WT. The effect of methylprednisolone on cytokine concentration and leukocyte adhesion molecule expression in an isolated cardiopulmonary bypass system. Cytokine 2003; 22:149-55. [PMID: 12842763 DOI: 10.1016/s1043-4666(03)00135-2] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
This study examines the effect of methylprednisolone on cytokine balance and adhesion molecule expression within an isolated cardiopulmonary bypass (CPB) system. This isolated CPB system is an in vitro model which simulates the pro-inflammatory immune response. Whole blood from 10 volunteers was obtained in two equal amounts. Heparin and saline were added to the control group while heparin and methylprednisolone were added to the methylprednisolone group. The blood was added to two identical CPB circuits and bypass commenced by a trained perfusionist. Samples were taken at blood donation (Sample 0), 10 min after the addition of drugs (Sample 1) and after 30, 60 and 90 min of CPB (Samples 2, 3 and 4, respectively). Cytokines interleukin-8 (IL-8), interleukin-10 (IL-10), interleukin-1 receptor antagonist (IL-1ra) and tumour necrosis factor soluble receptor 2 (TNFsr2) and the leucocyte adhesion molecules L-selectin, HLA DR, CD18 and CD11b were determined. IL-8 increased in both groups. This increase was significantly less in the methylprednisolone group. Increases in granulocyte CD11b and CD18 expression were less in the methylprednisolone group than in the control group but did not reach statistical significance. These results indicate that methylprednisolone significantly reduces the production of IL-8 in an isolated CPB system. This effect occurs in the absence of IL-10.
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Affiliation(s)
- Sheena M C Gormley
- Department of Clinical Anaesthesia, The Royal Group of Hospitals Trust, Grosvenor Road, BT12 6BA, Northern Ireland, Belfast, UK
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Sin DD, Man SFP. Why are patients with chronic obstructive pulmonary disease at increased risk of cardiovascular diseases? The potential role of systemic inflammation in chronic obstructive pulmonary disease. Circulation 2003; 107:1514-9. [PMID: 12654609 DOI: 10.1161/01.cir.0000056767.69054.b3] [Citation(s) in RCA: 713] [Impact Index Per Article: 34.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
BACKGROUND Chronic obstructive pulmonary disease (COPD) increases the risk of cardiovascular disease 2- to 3-fold. The factors responsible for this association remain largely unknown. METHODS AND RESULTS We analyzed data from participants, > or =50 years of age, of the Third National Health and Nutrition Examination Survey (n=6629) to determine whether C-reactive protein (CRP) and other systemic inflammatory markers are present in participants with chronic airflow obstruction and are associated with cardiac injury. Participants with severe airflow obstruction had circulating leukocyte, platelet, and fibrinogen levels that were 460/ microL (95% confidence interval [CI], 30 to 890/ microL), 39 510/ microL (95% CI, 21 730 to 57 290/ microL), and 41.63 mg/dL (95% CI, 19.87 to 63.39 mg/dL) higher, respectively, than in those without airflow obstruction. They were also 2.18 times (95% CI, 1.46 to 3.27) more likely to have an elevated circulating CRP level. Moderate airflow obstruction was associated with smaller but still significant increases in these levels. Moderate and severe airflow obstruction was associated with increased occurrence of ischemic changes on electrocardiograms of participants. In the presence of both highly elevated CRP and moderate or severe airflow obstruction, the Cardiac Infarction Injury Score was 2.68 and 5.88 U higher, respectively, than in those without airflow obstruction and with low CRP, which suggests an additive effect of CRP and COPD on the risk of cardiac injury. CONCLUSION Low-grade systemic inflammation was present in participants with moderate to severe airflow obstruction and was associated with increased risk of cardiac injury. This may in part explain the high rates of cardiovascular complications in COPD.
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Affiliation(s)
- Don D Sin
- Department of Medicine, Pulmonary Division, University of Alberta, Edmonton, Alberta, Canada.
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Zilinski JL, Kao WJ. Tissue adhesiveness and host response ofin situ photopolymerizable interpenetrating networks containing methylprednisolone acetate. ACTA ACUST UNITED AC 2003; 68:392-400. [PMID: 14704982 DOI: 10.1002/jbm.a.20079] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Interpenetrating networks (IPNs) of varying formulations were investigated as candidates for an in situ photopolymerizable drug delivery matrix containing poly(ethylene glycol) diacrylate and gelatin. The anti-inflammatory agent methylprednisolone acetate was loaded into the IPN. Bond strength between the IPN and tissue (i.e., muscle, dermis, skin) was determined by a modified American Society for Testing and Materials peel test at constant peel rate. The IPNs provided adhesion values of up to 5.7N, which were three- to fivefold lower than that of the commercial tissue bioadhesive. The subcutaneous cage implant system was utilized to assess material host response and drug efficacy in vivo. IPN formulations elicited a more intense acute inflammatory response than the empty cage controls. Methylprednisolone acetate loaded within the IPNs lowered the level of inflammatory response to levels that were comparable to the empty cage baseline controls. In conclusion, a methodology was developed to quantify the tissue adhesiveness of an in situ photopolymerized IPN matrix containing anti-inflammatory agents. The efficacy of drug-loaded IPN in affecting the host inflammatory response was demonstrated in vivo.
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Affiliation(s)
- Jodi L Zilinski
- Department of Biomedical Engineering, College of Engineering, University of Wisconsin-Madison, Madison, Wisconsin 53705, USA
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Zimmerman JJ. Congenital heart disease, cardiopulmonary bypass, systemic inflammatory response syndrome, compensatory anti-inflammatory response syndrome, and outcome: evolving understanding of critical care inflammation immunology. Crit Care Med 2002; 30:1178-9. [PMID: 12006833 DOI: 10.1097/00003246-200205000-00048] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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