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Au E, Zhao K, Belley-Côté E, Song Y, Al-Hazzani W, Sadeghirad B, Wang E, Young J, Kashani H, Kavosh M, Inami T, Beaver C, Kloppenburg S, Mazer D, Jacobsohn E, Um K, Spence J. The effect of perioperative benzodiazepine administration on postoperative nausea and vomiting: a systematic review and meta-analysis of randomised controlled trials. Br J Anaesth 2024; 132:469-482. [PMID: 38177006 DOI: 10.1016/j.bja.2023.11.045] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2023] [Revised: 10/30/2023] [Accepted: 11/07/2023] [Indexed: 01/06/2024] Open
Abstract
BACKGROUND Despite recent systematic reviews suggesting their benefit for postoperative nausea, vomiting, or both (PONV) prevention, benzodiazepines have not been incorporated into guidelines for PONV prophylaxis because of concerns about possible adverse effects. We conducted an updated meta-analysis to inform future practice guidelines. METHODS We included randomised controlled trials (RCTs) of all languages comparing benzodiazepines with non-benzodiazepine comparators in adults undergoing inpatient surgery. Our outcomes were postoperative nausea, vomiting, or both. We assessed risk of bias for RCTs using the Cochrane Risk of Bias tool. We pooled data using a random-effects model and assessed the quality of evidence for each outcome using the Grading of Recommendations, Assessment, Development and Evaluation (GRADE) approach. RESULTS We screened 31 413 abstracts and 950 full texts. We included 119 RCTs; 104 were included in quantitative synthesis. Based on moderate certainty evidence, we found that perioperative benzodiazepine administration reduced the incidence of PONV (52 studies, n=5086, relative risk [RR]: 0.77, 95% confidence interval [CI] 0.66-0.89; number needed to treat [NNT] 16; moderate certainty), postoperative nausea (55 studies, n=5916, RR: 0.72, 95% CI 0.62-0.83; NNT 21; moderate certainty), and postoperative vomiting (52 studies, n=5909, RR: 0.74, 95% CI 0.60-0.91; NNT 55; moderate certainty). CONCLUSIONS Moderate quality evidence shows that perioperative benzodiazepine administration decreases the incidence of PONV. The results of this systematic review and meta-analysis will inform future clinical practice guidelines. SYSTEMATIC REVIEW PROTOCOL The protocol for this systematic review was pre-registered with PROSPERO International Prospective Register of Systematic Reviews (CRD42022361088) and published in BMJ Open (PMID 31831540).
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Affiliation(s)
- Emily Au
- Faculty of Health Sciences, McMaster University, Hamilton, ON, Canada
| | - Karen Zhao
- Faculty of Health Sciences, McMaster University, Hamilton, ON, Canada
| | - Emilie Belley-Côté
- Department of Medicine (Cardiology and Critical Care), Perioperative Research Division, Population Health Research Institute, McMaster University, Hamilton, ON, Canada
| | - Yuri Song
- Faculty of Science, McMaster University, Hamilton, ON, Canada
| | - Waleed Al-Hazzani
- Departments of Critical Care, Medicine (Gastroenterology), Health Research Methods, Evaluation, and Impact (HEI), McMaster University, Hamilton, ON, Canada
| | - Behnam Sadeghirad
- Departments of Anesthesia and Health Research Methods, Evaluation, and Impact, McMaster University, Hamilton, ON, Canada
| | - Eugene Wang
- Department of Family Medicine, University of Ottawa, Ottawa, ON, Canada
| | - Jack Young
- Health Sciences Library, McMaster University, Hamilton, ON, Canada
| | - Hessam Kashani
- Department of Anesthesia and Perioperative Medicine, University of Manitoba, Winnipeg, MB, Canada
| | - Morvarid Kavosh
- Department of Medicine, Coney Island Hospital, New York, NY, USA
| | - Toru Inami
- Department of Cardiovascular Medicine, Nippon Medical School, Tokyo, Japan
| | | | | | - David Mazer
- Department of Anesthesia and Li Ka Shing Knowledge Institute, St. Michael's Hospital, Toronto, ON, Canada; Department of Anesthesiology and Pain Medicine, University of Toronto, Toronto, ON, Canada
| | - Eric Jacobsohn
- Department of Anesthesia and Perioperative Medicine and Medicine (Critical Care), University of Manitoba, Winnipeg, MB, Canada
| | - Kevin Um
- Department of Medicine (Cardiology), McMaster University, Hamilton, ON, Canada
| | - Jessica Spence
- Departments of Anesthesia and Critical Care and Health Research Methods, Evaluation, and Impact, Perioperative Research Division, Population Health Research Institute, McMaster University, Hamilton, ON, Canada.
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2
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Wang E, Belley-Côté EP, Young J, He H, Saud H, D'Aragon F, Um K, Alhazzani W, Piticaru J, Hedden M, Whitlock R, Mazer CD, Kashani HH, Zhang SY, Lucas A, Timmerman N, Nishi C, Jain D, Kugler A, Beaver C, Kloppenburg S, Schulman S, Borges FK, Kavosh M, Wada C, Lin S, Sibilio S, Lauw M, Benz A, Szczeklik W, Mokhtari A, Jacobsohn E, Spence J. Effect of perioperative benzodiazepine use on intraoperative awareness and postoperative delirium: a systematic review and meta-analysis of randomised controlled trials and observational studies. Br J Anaesth 2023; 131:302-313. [PMID: 36621439 DOI: 10.1016/j.bja.2022.12.001] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2022] [Revised: 11/07/2022] [Accepted: 12/02/2022] [Indexed: 01/07/2023] Open
Abstract
BACKGROUND Benzodiazepine use is associated with delirium, and guidelines recommend avoiding them in older and critically ill patients. Their perioperative use remains common because of perceived benefits. METHODS We searched CENTRAL, MEDLINE, CINAHL, PsycInfo, and Web of Science from inception to June 2021. Pairs of reviewers identified randomised controlled trials and prospective observational studies comparing perioperative use of benzodiazepines with other agents or placebo in patients undergoing surgery. Two reviewers independently abstracted data, which we combined using a random-effects model. Our primary outcomes were delirium, intraoperative awareness, and mortality. RESULTS We included 34 randomised controlled trials (n=4354) and nine observational studies (n=3309). Observational studies were considered separately. Perioperative benzodiazepines did not increase the risk of delirium (n=1352; risk ratio [RR] 1.43; 95% confidence interval [CI]: 0.9-2.27; I2=72%; P=0.13; very low-quality evidence). Use of benzodiazepines instead of dexmedetomidine did, however, increase the risk of delirium (five studies; n=429; RR 1.83; 95% CI: 1.24-2.72; I2=13%; P=0.002). Perioperative benzodiazepine use decreased the risk of intraoperative awareness (n=2245; RR 0.26; 95% CI: 0.12-0.58; I2=35%; P=0.001; very low-quality evidence). When considering non-events, perioperative benzodiazepine use increased the probability of not having intraoperative awareness (RR 1.07; 95% CI: 1.01-1.13; I2=98%; P=0.03; very low-quality evidence). Mortality was reported by one randomised controlled trial (n=800; RR 0.90; 95% CI: 0.20-3.1; P=0.80; very low quality). CONCLUSIONS In this systematic review and meta-analysis, perioperative benzodiazepine use did not increase postoperative delirium and decreased intraoperative awareness. Previously observed relationships of benzodiazepine use with delirium could be explained by comparisons with dexmedetomidine. SYSTEMATIC REVIEW PROTOCOL PROSPERO CRD42019128144.
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Affiliation(s)
- Eugene Wang
- Michael G. DeGroote School of Medicine, McMaster University, Hamilton, ON, Canada
| | - Emilie P Belley-Côté
- Departments of Medicine (Cardiology and Critical Care), McMaster University, Hamilton, ON, Canada; Perioperative Research Division, Population Health Research Institute, Hamilton, ON, Canada
| | - Jack Young
- Health Sciences Library, McMaster University, Hamilton, ON, Canada
| | - Henry He
- Michael G. DeGroote School of Medicine, McMaster University, Hamilton, ON, Canada
| | - Haris Saud
- Michael G. DeGroote School of Medicine, McMaster University, Hamilton, ON, Canada
| | - Frederick D'Aragon
- Départment d'anesthésiologie, Université de Sherbrooke, Quebec, QU, Canada
| | - Kevin Um
- Department of Medicine, McMaster University, Hamilton, ON, Canada
| | - Waleed Alhazzani
- Departments of Critical Care, Medicine (Gastroenterology), and Health Research Methods, Evaluation, and Impact, McMaster University, Hamilton, ON, Canada
| | - Joshua Piticaru
- Department of Medicine, McMaster University, Hamilton, ON, Canada
| | - Matthew Hedden
- Faculty of Arts and Science, Queen's University, Kingston, ON, Canada
| | - Richard Whitlock
- Perioperative Research Division, Population Health Research Institute, Hamilton, ON, Canada; Departments of Surgery (Cardiac Surgery) and Health Research Methods, Evaluation, and Impact, McMaster University, Hamilton, ON, Canada
| | - C David Mazer
- Department of Anesthesia and Li Ka Shing Knowledge Institute, St. Michael's Hospital, Toronto, ON, Canada; Department of Anesthesiology and Pain Medicine, University of Toronto, Toronto, ON, Canada
| | - Hessam H Kashani
- Department of Anesthesia and Perioperative Medicine, University of Manitoba, Winnipeg, MB, Canada
| | | | - Amanda Lucas
- Department of Health Research Methods, Evaluation, and Impact; McMaster University, Hamilton, ON, Canada
| | | | - Cameron Nishi
- Department of Anesthesia, McMaster University, Hamilton, ON, Canada
| | - Davinder Jain
- Department of Anesthesiology, Trillium Health Partners, Toronto, ON, Canada
| | - Aaron Kugler
- Department of Anesthesia, McMaster University, Hamilton, ON, Canada
| | | | | | - Sam Schulman
- Department of Medicine (Hematology), McMaster University, Hamilton, ON, Canada; Thrombosis and Atherosclerosis Research Institute, Population Health Research Institute, Hamilton, ON, Canada; Department of Obstetrics and Gynecology, I.M. Sechenov First Moscow State Medical University, Moscow, Russia
| | - Flavia K Borges
- Perioperative Research Division, Population Health Research Institute, Hamilton, ON, Canada; Departments of Medicine and Health Research Methods, Evaluation, and Impact, McMaster University, Hamilton, ON, Canada
| | - Morvarid Kavosh
- Department of Medicine, Coney Island Hospital, Brooklyn, NY, USA
| | - Chihiro Wada
- Faculty of Arts, Waseda University, Tokyo, Japan
| | - Sabrina Lin
- Michael G. DeGroote School of Medicine, McMaster University, Hamilton, ON, Canada
| | - Serena Sibilio
- Division of Cardiac Surgery, Instituto Clinico Sant'Ambrogio, Milan, Italy; Division of Cardiac Surgery, Centre Hospitalière Universitaire de Lille, Lille, France
| | - Mandy Lauw
- Population Health Research Institute, Hamilton, ON, Canada
| | - Alexander Benz
- Population Health Research Institute, Hamilton, ON, Canada
| | - Wojciech Szczeklik
- Center for Intensive Care and Perioperative Medicine, Jagiellonian University Medical College, Kraków, Poland
| | - Arastoo Mokhtari
- Department of Medicine (Cardiology), McMaster University, Hamilton, ON, Canada
| | - Eric Jacobsohn
- Departments of Anesthesia and Perioperative Medicine and Medicine (Critical Care), University of Manitoba, Winnipeg, MB, Canada
| | - Jessica Spence
- Perioperative Research Division, Population Health Research Institute, Hamilton, ON, Canada; Departments of Anesthesia and Critical Care and Health Research Methods, Evaluation, and Impact, McMaster University, Hamilton, ON, Canada.
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3
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McEwen CC, Amir T, Qiu Y, Young J, Kennedy K, Grocott HP, Kessani H, Mazer D, Brudney S, Kavosh M, Jacobsohn E, Vedel A, Wang E, Whitlock RP, Belley-Coté EP, Spence J. Morbidity and mortality in patients managed with high compared with low blood pressure targets during on-pump cardiac surgery: a systematic review and meta-analysis of randomized controlled trials. Can J Anaesth 2022; 69:374-386. [PMID: 35014001 DOI: 10.1007/s12630-021-02171-3] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2021] [Revised: 11/02/2021] [Accepted: 11/02/2021] [Indexed: 12/29/2022] Open
Abstract
PURPOSE Many believe that blood pressure management during cardiac surgery is associated with postoperative outcomes. We conducted a systematic review and meta-analysis of randomized controlled trials (RCTs) to determine the impact of high compared with low intraoperative blood pressure targets on postoperative morbidity and mortality in adults undergoing cardiac surgery on cardiopulmonary bypass (CPB). Our primary objective was to inform the design of a future large RCT. SOURCE We searched MEDLINE, EMBASE, Web of Science, CINAHL, and CENTRAL for RCTs comparing high with low intraoperative blood pressure targets in adult patients undergoing any cardiac surgical procedure on CPB. We screened reference lists, grey literature, and conference proceedings. PRINCIPAL FINDINGS We included eight RCTs (N =1,116 participants); all examined the effect of blood pressure management only during the CPB. Trial definitions of high compared with low blood pressure varied and, in some, there was a discrepancy between the target and achieved mean arterial pressure. We observed no difference in delirium, cognitive decline, stroke, acute kidney injury, or mortality between high and low blood pressure targets (very-low to low quality evidence). Higher blood pressure targets may have increased the risk of requiring a blood transfusion (three trials; n = 456 participants; relative risk, 1.4; 95% confidence interval, 1.1 to 1.9; P = 0.01; moderate quality evidence) but this finding was based on a small number of trials. CONCLUSION Individual trial definitions of high and low blood pressure targets varied, limiting inferences. The effect of high (compared with low) blood pressure targets on other morbidity and mortality after cardiac surgery remains unclear because of limitations with the body of existing evidence. Research to determine the optimal management of blood pressure during cardiac surgery is required. STUDY REGISTRATION PROSPERO (CRD42020177376); registered: 5 July 2020.
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Affiliation(s)
- Charlotte C McEwen
- Department of Surgery (Cardiac Surgery), McMaster University, Hamilton, ON, Canada
| | - Takhliq Amir
- Faculty of Health Sciences, McMaster University, Hamilton, ON, Canada
| | - Yuan Qiu
- Faculty of Health Sciences, McMaster University, Hamilton, ON, Canada
| | - Jack Young
- Health Sciences Library, McMaster University, Hamilton, ON, Canada
| | - Kevin Kennedy
- Department of Health Research Methods, Evaluation, and Impact, McMaster University, Hamilton, ON, Canada
| | - Hilary P Grocott
- Department of Anesthesia and Perioperative Medicine, University of Manitoba, Winnipeg, MB, Canada
| | - Hesham Kessani
- Department of Anesthesia and Perioperative Medicine, University of Manitoba, Winnipeg, MB, Canada
| | - David Mazer
- Department of Anesthesia, Li Ka Shing Knowledge Institute, St. Michael's Hospital, Toronto, ON, Canada.,Department of Anesthesiology and Pain Medicine, University of Toronto, Toronto, ON, Canada
| | - Scott Brudney
- Departments of Medicine (Critical Care) and Anesthesia and Perioperative Medicine, University of Manitoba, Winnipeg, MB, Canada
| | - Morvarid Kavosh
- Department of Anesthesia and Perioperative Medicine, University of Manitoba, Winnipeg, MB, Canada
| | - Eric Jacobsohn
- Departments of Medicine (Critical Care) and Anesthesia and Perioperative Medicine, University of Manitoba, Winnipeg, MB, Canada
| | - Anne Vedel
- Department of Cardiothoracic Anesthesiology, Copenhagen University Hospital, Copenhagen, Denmark
| | - Eugene Wang
- Faculty of Health Sciences, McMaster University, Hamilton, ON, Canada
| | - Richard P Whitlock
- Departments of Surgery (Cardiac Surgery) and Health Research Methods, Evaluation, and Impact, McMaster University, Hamilton, ON, Canada.,Perioperative Research Division, Population Health Research Institute, Hamilton, ON, Canada
| | - Emilie P Belley-Coté
- Perioperative Research Division, Population Health Research Institute, Hamilton, ON, Canada.,Departments of Medicine (Cardiology and Critical Care) and Health Research Methods, Evaluation, and Impact, McMaster University, Hamilton, ON, Canada
| | - Jessica Spence
- Perioperative Research Division, Population Health Research Institute, Hamilton, ON, Canada. .,Departments of Anesthesia and Critical Care and Health Research Methods, Evaluation, and Impact, McMaster University, Hamilton, ON, Canada.
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4
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Spence J, Belley-Côté E, Jacobsohn E, Lee SF, Whitlock R, Bangdiwala S, Syed S, Sarkaria A, MacIsaac S, Lengyel A, Long S, Um K, McIntyre WF, Kavosh M, Fast I, Arora R, Lamy A, Connolly S, Devereaux PJ. Restricted versus liberal intraoperative benzodiazepine use in cardiac anaesthesia for reducing delirium (B-Free Pilot): a pilot, multicentre, randomised, cluster crossover trial. Br J Anaesth 2020; 125:38-46. [PMID: 32416996 DOI: 10.1016/j.bja.2020.03.030] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2019] [Revised: 03/03/2020] [Accepted: 03/23/2020] [Indexed: 12/19/2022] Open
Abstract
BACKGROUND Delirium is common after cardiac surgery and is associated with adverse outcomes. Perioperative benzodiazepine use is associated with delirium and is common during cardiac surgery, which may increase the risk of postoperative delirium. We undertook a pilot study to inform the feasibility of a large randomised cluster crossover trial examining whether an institutional policy of restricted benzodiazepine administration during cardiac surgery (compared with liberal administration) would reduce delirium. METHODS We conducted a two-centre, pilot, randomised cluster crossover trial with four 4 week crossover periods. Each centre was randomised to a policy of restricted or liberal use, and then alternated between the two policies during the remaining three periods. Our feasibility outcomes were adherence to each policy (goal ≥80%) and outcome assessment (one delirium assessment per day in the ICU in ≥90% of participants). We also evaluated the incidence of intraoperative awareness in one site using serial Brice questionnaires. RESULTS Of 800 patients undergoing cardiac surgery during the trial period, 127/800 (15.9%) had delirium. Of these, 355/389 (91.3%) received benzodiazepines during the liberal benzodiazepine periods and 363/411 (88.3%) did not receive benzodiazepines during the restricted benzodiazepine periods. Amongst the 800 patients, 740 (92.5%) had ≥1 postoperative delirium assessment per day in the ICU. Of 521 patients screened for intraoperative awareness, one patient (0.2%), managed during the restricted benzodiazepine period (but who received benzodiazepine), experienced intraoperative awareness. CONCLUSIONS This pilot study demonstrates the feasibility of a large, multicentre, randomised, cluster crossover trial examining whether an institutional policy of restricted vs liberal benzodiazepine use during cardiac surgery will reduce postoperative delirium. CLINICAL TRIAL REGISTRATION NCT03053869.
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Affiliation(s)
- Jessica Spence
- Department of Anesthesia, McMaster University, Hamilton, ON, Canada; Department of Critical Care, McMaster University, Hamilton, ON, Canada; Department of Health Research Methods, Evidence, and Impact, McMaster University, Hamilton, ON, Canada; Population Health Research Institute, Hamilton, ON, Canada.
| | - Emilie Belley-Côté
- Department of Critical Care, McMaster University, Hamilton, ON, Canada; Department of Health Research Methods, Evidence, and Impact, McMaster University, Hamilton, ON, Canada; Population Health Research Institute, Hamilton, ON, Canada; Department of Medicine (Cardiology), McMaster University, Hamilton, ON, Canada
| | - Eric Jacobsohn
- Department of Anesthesia and Perioperative Medicine, University of Manitoba, Winnipeg, MB, Canada; Department of Critical Care, University of Manitoba, Winnipeg, MB, Canada
| | - Shun Fu Lee
- Population Health Research Institute, Hamilton, ON, Canada
| | - Richard Whitlock
- Department of Critical Care, McMaster University, Hamilton, ON, Canada; Department of Health Research Methods, Evidence, and Impact, McMaster University, Hamilton, ON, Canada; Population Health Research Institute, Hamilton, ON, Canada; Department of Surgery (Cardiac Surgery), McMaster University, Hamilton, ON, Canada
| | | | - Summer Syed
- Department of Anesthesia, McMaster University, Hamilton, ON, Canada
| | - Anisha Sarkaria
- Department of Family and Community Medicine, University of Toronto, Toronto, ON, Canada
| | - Sarah MacIsaac
- School of Medicine, Faculty of Medicine, Royal College of Surgeons, Dublin, Ireland
| | - Alexandra Lengyel
- Faculty of Health Sciences, McMaster University, Hamilton, ON, Canada
| | - Steven Long
- Department of Anesthesia, McMaster University, Hamilton, ON, Canada
| | - Kevin Um
- Department of Medicine, McMaster University, Hamilton, ON, Canada
| | - William F McIntyre
- Population Health Research Institute, Hamilton, ON, Canada; Department of Medicine (Cardiology), McMaster University, Hamilton, ON, Canada
| | - Morvarid Kavosh
- Department of Anesthesia and Perioperative Medicine, University of Manitoba, Winnipeg, MB, Canada
| | - Ian Fast
- Department of Anesthesia and Perioperative Medicine, University of Manitoba, Winnipeg, MB, Canada
| | - Rakesh Arora
- Department of Critical Care, University of Manitoba, Winnipeg, MB, Canada; Department of Surgery (Cardiac Surgery), University of Manitoba, Winnipeg, MB, Canada
| | - Andre Lamy
- Department of Health Research Methods, Evidence, and Impact, McMaster University, Hamilton, ON, Canada; Population Health Research Institute, Hamilton, ON, Canada; Department of Surgery (Cardiac Surgery), McMaster University, Hamilton, ON, Canada
| | - Stuart Connolly
- Population Health Research Institute, Hamilton, ON, Canada; Department of Medicine (Cardiology), McMaster University, Hamilton, ON, Canada
| | - P J Devereaux
- Department of Health Research Methods, Evidence, and Impact, McMaster University, Hamilton, ON, Canada; Population Health Research Institute, Hamilton, ON, Canada; Department of Medicine (Cardiology), McMaster University, Hamilton, ON, Canada
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5
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Palermo J, Overbeek C, Dumont A, Jacobson E, El-Gabalwy R, Kavosh M, Saha T, Tanzola R, Dumertonshore D, Avidan M, Oberhaus J, Mickle A, Djaiani G, Deschamps A. Encephalography guidance of anesthesia to alleviate geriatric syndromes (Engages-Canada) study in cardiac surgery patients: a pragmatic, randomized clinical trial. J Cardiothorac Vasc Anesth 2019. [DOI: 10.1053/j.jvca.2019.07.035] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Kavosh M, Filomeno K, Rattan S, Dixon I. Ski Modulates Myofibroblast Motility via Downregulation of MMP2 and Paxillin. FASEB J 2015. [DOI: 10.1096/fasebj.29.1_supplement.lb579] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Morvarid Kavosh
- Physiology and PathophysiologySt. Boniface Research Center University of ManitobaWinnipegManitobaCanada
| | - Krista Filomeno
- Physiology and PathophysiologySt. Boniface Research Center University of ManitobaWinnipegManitobaCanada
| | - Sunil Rattan
- Physiology and PathophysiologySt. Boniface Research Center University of ManitobaWinnipegManitobaCanada
| | - Ian Dixon
- Physiology and PathophysiologySt. Boniface Research Center University of ManitobaWinnipegManitobaCanada
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Zeglinski M, Cunnington R, Davies J, Kavosh M, Gupta S, Bathe K, Rattan S, Czubryt M, Dixon I. Ski inhibits Scleraxis function: Effect on collagen expression in cardiac myofibroblasts. FASEB J 2013. [DOI: 10.1096/fasebj.27.1_supplement.1188.10] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
| | | | | | | | | | | | | | | | - Ian Dixon
- University of ManitobaWinnipegMBCanada
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Gupta S, Kavosh M, Chen S, Ghavami S, Rattan S, Klonisch T, Dixon I. Autophagy in phenoconversion of differentiated and undifferentiated fibroblasts. FASEB J 2013. [DOI: 10.1096/fasebj.27.1_supplement.1129.14] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
| | | | | | | | | | | | - Ian Dixon
- University of ManitobaWinnipegMBCanada
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9
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Kavosh M, Moallemian H, Salmi S, Dehdashti ME, Mehraniya H. Synthesis and Characterization of Cluster Flower-Like ZnO Nanostructure by Hydrothermal Method. ACTA ACUST UNITED AC 2013. [DOI: 10.1080/15533174.2012.740734] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- M. Kavosh
- a Department of Science, Behbahan Branch , Islamic Azad University , Behbahan , I. R. Iran
| | - H. Moallemian
- a Department of Science, Behbahan Branch , Islamic Azad University , Behbahan , I. R. Iran
| | - S. Salmi
- a Department of Science, Behbahan Branch , Islamic Azad University , Behbahan , I. R. Iran
| | - M. E. Dehdashti
- a Department of Science, Behbahan Branch , Islamic Azad University , Behbahan , I. R. Iran
| | - H. Mehraniya
- a Department of Science, Behbahan Branch , Islamic Azad University , Behbahan , I. R. Iran
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10
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Ghavami S, Cunnington RH, Yeganeh B, Davies JJL, Rattan SG, Bathe K, Kavosh M, Los MJ, Freed DH, Klonisch T, Pierce GN, Halayko AJ, Dixon IMC. Autophagy regulates trans fatty acid-mediated apoptosis in primary cardiac myofibroblasts. Biochim Biophys Acta 2012; 1823:2274-86. [PMID: 23026405 DOI: 10.1016/j.bbamcr.2012.09.008] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/12/2012] [Revised: 09/19/2012] [Accepted: 09/21/2012] [Indexed: 02/06/2023]
Abstract
Trans fats are not a homogeneous group of molecules and less is known about the cellular effects of individual members of the group. Vaccenic acid (VA) and elaidic acid (EA) are the predominant trans monoenes in ruminant fats and vegetable oil, respectively. Here, we investigated the mechanism of cell death induced by VA and EA on primary rat ventricular myofibroblasts (rVF). The MTT assay demonstrated that both VA and EA (200μM, 0-72 h) reduced cell viability in rVF (P<0.001). The FACS assay confirmed that both VA and EA induced apoptosis in rVF, and this was concomitant with elevation in cleaved caspase-9, -3 and -7, but not caspase-8. VA and EA decreased the expression ratio of Bcl2:Bax, induced Bax translocation to mitochondria and decrease in mitochondrial membrane potential (Δψ). BAX and BAX/BAK silencing in mouse embryonic fibroblasts (MEF) inhibited VA and EA-induced cell death compared to the corresponding wild type cells. Transmission electron microscopy revealed that VA and EA also induced macroautophagosome formation in rVF, and immunoblot analysis confirmed the induction of several autophagy markers: LC3-β lipidation, Atg5-12 accumulation, and increased beclin-1. Finally, deletion of autophagy genes, ATG3 and ATG5 significantly inhibited VA and EA-induced cell death (P<0.001). Our findings show for the first time that trans fat acid (TFA) induces simultaneous apoptosis and autophagy in rVF. Furthermore, TFA-induced autophagy is required for this pro-apoptotic effect. Further studies to address the effect of TFA on the heart may reveal significant translational value for prevention of TFA-linked heart disease.
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Affiliation(s)
- Saeid Ghavami
- Department of Physiology, University of Manitoba, Canada
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