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Wang E, Abdallah H, Snir J, Chong J, Palma DA, Mattonen SA, Lang P. Predicting Dosimetry of Stereotactic Ablative Radiotherapy for the Treatment of Multiple Lung Lesions. Int J Radiat Oncol Biol Phys 2023; 117:e732. [PMID: 37786130 DOI: 10.1016/j.ijrobp.2023.06.2254] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/04/2023]
Abstract
PURPOSE/OBJECTIVE(S) Stereotactic ablative radiotherapy (SABR) has recently been used to treat increasing numbers of lung metastases, either synchronously or over multiple courses of treatment. Selecting the optimal dose and fractionation to balance risk of local failure and treatment toxicity is challenging. This project uses machine learning to provide rapid dosimetry predictions of SABR to multiple lung lesions, allowing exploration of different dose prescription options prior to the radiation (RT) planning process. MATERIALS/METHODS A generative adversarial network (GAN) was trained to predict the dosimetry of multi-lesion thoracic SABR treatment from the planning CT scan, target and organ at risk contours, and the prescribed dose-fractionation without the need to carry out treatment planning. RT plans of patients who received at least one SABR treatment for ≥2 lung lesions between 2014-2020 at a single tertiary center were included in the analysis. All prescriptions were converted to their equivalent doses in two Gray fractions (EQD2). SABR treatments received at different timepoints were registered, and EQD2 doses were accumulated with no repair. Model performance was assessed using 5-fold cross validation. Plans were randomly divided into 5 folds, stratified by the number of lesions (no patients crossed folds). Each fold served as the testing set once, with the model trained on the other 4 folds. The model was evaluated on the difference in the volume of lung receiving above 20 Gray (V20) of the predicted dosimetry compared to the true dosimetry. RESULTS Treatment plans (n = 103) were included from 81 patients with 280 lesions (62, 23, 8, and 10 plans had 2, 3, 4, and ≥5 lesions respectively). Fifty-five, 18, and 4 patients had a single, 2 and 3 courses of RT respectively. Fifty-two patients were treated for primary lung cancer, 28 patients treated for metastases from other sites, and 1 patient for both. Seven patients (8.6%) developed ≥ Grade 2 pneumonitis. Doses prescribed were 60/8 (n = 136), 55/5 (n = 49), 54/3 (n = 27), 24/1 (n = 21), 35/5 (n = 13), 30/5 (n = 9), and other (n = 25). The mean lung V20 for all patients was 11.3% [1.5%-29.6%]; the mean lung V20 was 9.3%, 12.2%, 13.5% and 20.4% for plans with 2, 3, 4, ≥ 5 lesions respectively. The mean absolute difference (MAD) in lung V20 between the predicted dosimetry and true dosimetry over all 5-folds was 1.9% [0.0%-13.4%]; the MAD in lung V20 between the predicted and actual dosimetry was 1.6%, 2.1%, 2.9% and 2.6% for plans with 2, 3, 4, ≥ 5 lesions respectively. CONCLUSION The GAN-based model created in this study can predict the dosimetry of any number of lesions in the thorax treated with SABR. The model can be used to quickly determine the feasibility of SABR treatment for multiple synchronous lesions, or in the retreatment setting. The ability to explore the dosimetry of different prescription options for a given patient prior to RT planning may allow for personalized risk-adapted treatment if combined with local control and toxicity modelling.
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Affiliation(s)
- E Wang
- Department of Medical Biophysics, Western University, London, ON, Canada
| | - H Abdallah
- Schulich School of Medicine and Dentistry, Western University, London, ON, Canada
| | - J Snir
- London Regional Cancer Program, London Health Sciences Centre, London, ON, Canada
| | - J Chong
- Department of Medical Imaging, Western University, London, ON, Canada
| | - D A Palma
- Department of Oncology, Western University, London, ON, Canada
| | - S A Mattonen
- Department of Medical Biophysics, Western University, London, ON, Canada
| | - P Lang
- Department of Oncology, Western University, London, ON, Canada
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Park RF, Boshoff WHP, Cabral AL, Chong J, Martinelli JA, McMullen MS, Fetch JWM, Paczos-Grzęda E, Prats E, Roake J, Sowa S, Ziems L, Singh D. Breeding oat for resistance to the crown rust pathogen Puccinia coronata f. sp. avenae: achievements and prospects. Theor Appl Genet 2022; 135:3709-3734. [PMID: 35665827 PMCID: PMC9729147 DOI: 10.1007/s00122-022-04121-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/20/2021] [Accepted: 05/01/2022] [Indexed: 05/05/2023]
Abstract
Crown rust, caused by Puccinia coronata f. sp. avenae (Pca), is a significant impediment to global oat production. Some 98 alleles at 92 loci conferring resistance to Pca in Avena have been designated; however, allelic relationships and chromosomal locations of many of these are unknown. Long-term monitoring of Pca in Australia, North America and elsewhere has shown that it is highly variable even in the absence of sexual recombination, likely due to large pathogen populations that cycle between wild oat communities and oat crops. Efforts to develop cultivars with genetic resistance to Pca began in the 1950s. Based almost solely on all all-stage resistance, this has had temporary benefits but very limited success. The inability to eradicate wild oats, and their common occurrence in many oat growing regions, means that future strategies to control Pca must be based on the assumption of a large and variable prevailing pathogen population with high evolutionary potential, even if cultivars with durable resistance are deployed and grown widely. The presence of minor gene, additive APR to Pca in hexaploid oat germplasm opens the possibility of pyramiding several such genes to give high levels of resistance. The recent availability of reference genomes for diploid and hexaploid oat will undoubtedly accelerate efforts to discover, characterise and develop high throughput diagnostic markers to introgress and pyramid resistance to Pca in high yielding adapted oat germplasm.
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Affiliation(s)
- R F Park
- School of Life and Environmental Sciences, Faculty of Science, The University of Sydney, Sydney, Australia.
| | - W H P Boshoff
- Department of Plant Sciences, University of the Free State, P.O. Box 339, Bloemfontein, 9300, South Africa
| | - A L Cabral
- Swift Current Research and Development Centre, Agriculture and Agri-Food Canada, Swift Current, Canada
| | - J Chong
- Morden Research and Development Centre, Agriculture and Agri-Food Canada, Morden, Canada
| | - J A Martinelli
- Department of Crop Science, Agronomy School, Federal University of Rio Grande Do Sul (UFRGS), Av. Bento Gonçalves, 7712, Porto Alegre, RS, 91501-970, Brazil
| | - M S McMullen
- Department of Plant Sciences, North Dakota State University, Fargo, ND, 58105-5051, USA
| | - J W Mitchell Fetch
- Brandon Research and Development Centre, Agriculture and Agri-Food Canada, Brandon, Canada
| | - E Paczos-Grzęda
- Institute of Plant Genetics, Breeding and Biotechnology, University of Life Sciences in Lublin, 20-950, Lublin, Poland
| | - E Prats
- CSIC-Institute for Sustainable Agriculture, Avda. Menéndez Pidal s/n. , 14004, Córdoba, Spain
| | - J Roake
- School of Life and Environmental Sciences, Faculty of Science, The University of Sydney, Sydney, Australia
| | - S Sowa
- Institute of Plant Genetics, Breeding and Biotechnology, University of Life Sciences in Lublin, 20-950, Lublin, Poland
| | - L Ziems
- School of Life and Environmental Sciences, Faculty of Science, The University of Sydney, Sydney, Australia
| | - D Singh
- School of Life and Environmental Sciences, Faculty of Science, The University of Sydney, Sydney, Australia
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Danaila V, Vaheisvaran P, Ferkh A, Emerson P, Stefani L, Duggins A, Evans A, Chong J, Denniss A, Kizana E, Thomas L. Demographics and Cardiovascular Risk Profile of Ischaemic Stroke in Western Sydney. Heart Lung Circ 2022. [DOI: 10.1016/j.hlc.2022.06.494] [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] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
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Deshmukh T, Hume R, Pathan F, Chong J. Platelet Derived Growth Factor-AB Accelerates Scar Maturity in a Porcine Model of Ischaemia/Reperfusion. Heart Lung Circ 2022. [DOI: 10.1016/j.hlc.2022.06.546] [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] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Selvakumar D, Clayton Z, Prowse A, Dingwall S, George J, Shah H, Paterson H, Jeyaprakesh P, Wu Z, Campbell T, Kotake Y, Turnbull S, Nguyen Q, Grieve S, Palpant N, Pathan F, Kizana E, Kumar S, Gray P, Chong J. Cellular Heterogeneity of Pluripotent Stem Cell Derived Cardiomyocyte Grafts is Mechanistically Linked to Treatable Arrhythmias. Heart Lung Circ 2022. [DOI: 10.1016/j.hlc.2022.06.004] [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] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
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Selvakumar D, Deshmukh T, Foster S, Sinaei N, Min A, Grieve S, Pathan F, Chong J. Comparative Assessment of Motion Averaged Free-Breathing or Breath-Held Cardiac Magnetic Resonance Imaging Protocols in a Porcine Myocardial Infarction Model. Heart Lung Circ 2022. [DOI: 10.1016/j.hlc.2022.06.236] [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] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
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Sia CH, Chan MHH, Zheng H, Ko J, Ho AFW, Chong J, Foo D, Foo LL, Lim PZY, Liew BW, Chai P, Yeo TC, Tan HC, Chua T, Chan MYY, Tan JWC, Bulluck H, Hausenloy DJ. Optimal glucose, HbA1c, glucose-HbA1c ratio and stress-hyperglycaemia ratio cut-off values for predicting 1-year mortality in diabetic and non-diabetic acute myocardial infarction patients. Cardiovasc Diabetol 2021; 20:211. [PMID: 34666746 PMCID: PMC8524932 DOI: 10.1186/s12933-021-01395-3] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/28/2021] [Accepted: 09/27/2021] [Indexed: 11/26/2022] Open
Abstract
Background Stress-induced hyperglycaemia at time of hospital admission has been linked to worse prognosis following acute myocardial infarction (AMI). In addition to glucose, other glucose-related indices, such as HbA1c, glucose-HbA1c ratio (GHR), and stress-hyperglycaemia ratio (SHR) are potential predictors of clinical outcomes following AMI. However, the optimal blood glucose, HbA1c, GHR, and SHR cut-off values for predicting adverse outcomes post-AMI are unknown. As such, we determined the optimal blood glucose, HbA1c, GHR, and SHR cut-off values for predicting 1-year all cause mortality in diabetic and non-diabetic ST-segment elevation myocardial infarction (STEMI) and non-ST-segment elevation myocardial infarction (NSTEMI) patients. Methods We undertook a national, registry-based study of patients with AMI from January 2008 to December 2015. We determined the optimal blood glucose, HbA1c, GHR, and SHR cut-off values using the Youden’s formula for 1-year all-cause mortality. We subsequently analyzed the sensitivity, specificity, positive and negative predictive values of the cut-off values in the diabetic and non-diabetic subgroups, stratified by the type of AMI. Results There were 5841 STEMI and 4105 NSTEMI in the study. In STEMI patients, glucose, GHR, and SHR were independent predictors of 1-year all-cause mortality [glucose: OR 2.19 (95% CI 1.74–2.76); GHR: OR 2.28 (95% CI 1.80–2.89); SHR: OR 2.20 (95% CI 1.73–2.79)]. However, in NSTEMI patients, glucose and HbA1c were independently associated with 1-year all-cause mortality [glucose: OR 1.38 (95% CI 1.01–1.90); HbA1c: OR 2.11 (95% CI 1.15–3.88)]. In diabetic STEMI patients, SHR performed the best in terms of area-under-the-curve (AUC) analysis (glucose: AUC 63.3%, 95% CI 59.5–67.2; GHR 68.8% 95% CI 64.8–72.8; SHR: AUC 69.3%, 95% CI 65.4–73.2). However, in non-diabetic STEMI patients, glucose, GHR, and SHR performed equally well (glucose: AUC 72.0%, 95% CI 67.7–76.3; GHR 71.9% 95% CI 67.7–76.2; SHR: AUC 71.7%, 95% CI 67.4–76.0). In NSTEMI patients, glucose performed better than HbA1c for both diabetic and non-diabetic patients in AUC analysis (For diabetic, glucose: AUC 52.8%, 95% CI 48.1–57.6; HbA1c: AUC 42.5%, 95% CI 37.6–47. For non-diabetic, glucose: AUC 62.0%, 95% CI 54.1–70.0; HbA1c: AUC 51.1%, 95% CI 43.3–58.9). The optimal cut-off values for glucose, GHR, and SHR in STEMI patients were 15.0 mmol/L, 2.11, and 1.68 for diabetic and 10.6 mmol/L, 1.72, and 1.51 for non-diabetic patients respectively. For NSTEMI patients, the optimal glucose values were 10.7 mmol/L for diabetic and 8.1 mmol/L for non-diabetic patients. Conclusions SHR was the most consistent independent predictor of 1-year all-cause mortality in both diabetic and non-diabetic STEMI, whereas glucose was the best predictor in NSTEMI patients. Supplementary Information The online version contains supplementary material available at 10.1186/s12933-021-01395-3.
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Affiliation(s)
- Ching-Hui Sia
- Department of Cardiology, National University Heart Centre Singapore, Singapore, Singapore.,Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
| | - Mervyn Huan-Hao Chan
- Cardiovascular & Metabolic Disorders Program, Duke-NUS Medical School, 8 College Road, Level 8, Singapore, 169857, Singapore
| | - Huili Zheng
- Health Promotion Board, National Registry of Diseases Office, Singapore, Singapore
| | - Junsuk Ko
- MD Program, Duke-NUS Medical School, Singapore, Singapore
| | - Andrew Fu-Wah Ho
- SingHealth Duke-NUS Emergency Medicine Academic Clinical Programme, Singapore, Singapore.,National Heart Research Institute Singapore, National Heart Centre Singapore, Singapore, Singapore.,Pre-Hospital and Emergency Care Research Centre, Health Services and Systems Research, Duke-NUS Medical School, Singapore, Singapore
| | - Jun Chong
- National Heart Research Institute Singapore, National Heart Centre Singapore, Singapore, Singapore.,Department of Cardiology, National Heart Centre Singapore, Singapore, Singapore
| | - David Foo
- Tan Tock Seng Hospital, Singapore, Singapore
| | - Ling-Li Foo
- Health Promotion Board, National Registry of Diseases Office, Singapore, Singapore
| | | | | | - Ping Chai
- Department of Cardiology, National University Heart Centre Singapore, Singapore, Singapore.,Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
| | - Tiong-Cheng Yeo
- Department of Cardiology, National University Heart Centre Singapore, Singapore, Singapore.,Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
| | - Huay-Cheem Tan
- Department of Cardiology, National University Heart Centre Singapore, Singapore, Singapore.,Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
| | - Terrance Chua
- Department of Cardiology, National Heart Centre Singapore, Singapore, Singapore
| | - Mark Yan-Yee Chan
- Department of Cardiology, National University Heart Centre Singapore, Singapore, Singapore.,Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
| | - Jack Wei Chieh Tan
- Pre-Hospital and Emergency Care Research Centre, Health Services and Systems Research, Duke-NUS Medical School, Singapore, Singapore
| | - Heerajnarain Bulluck
- Leeds Institute of Cardiovascular and Metabolic Medicine, University of Leeds, Leeds, UK.,Department of Cardiology, Leeds General Infirmary, Leeds Teaching Hospitals NHS Trust, Leeds, UK
| | - Derek J Hausenloy
- Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore. .,Cardiovascular & Metabolic Disorders Program, Duke-NUS Medical School, 8 College Road, Level 8, Singapore, 169857, Singapore. .,National Heart Research Institute Singapore, National Heart Centre Singapore, Singapore, Singapore. .,Department of Cardiology, National Heart Centre Singapore, Singapore, Singapore. .,The Hatter Cardiovascular Institute, University College London, London, UK. .,Cardiovascular Research Center, College of Medical and Health Sciences, Asia University, Taichung City, Taiwan.
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8
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Francis R, Chong J, Ramlall M, Bucciarelli-Ducci C, Clayton T, Dodd M, Engstrøm T, Evans R, Ferreira VM, Fontana M, Greenwood JP, Kharbanda RK, Kim WY, Kotecha T, Lønborg JT, Mathur A, Møller UK, Moon J, Perkins A, Rakhit RD, Yellon DM, Bøtker HE, Bulluck H, Hausenloy DJ. Effect of remote ischaemic conditioning on infarct size and remodelling in ST-segment elevation myocardial infarction patients: the CONDI-2/ERIC-PPCI CMR substudy. Basic Res Cardiol 2021; 116:59. [PMID: 34648075 PMCID: PMC8516772 DOI: 10.1007/s00395-021-00896-2] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/07/2021] [Revised: 09/06/2021] [Accepted: 09/21/2021] [Indexed: 11/26/2022]
Abstract
The effect of limb remote ischaemic conditioning (RIC) on myocardial infarct (MI) size and left ventricular ejection fraction (LVEF) was investigated in a pre-planned cardiovascular magnetic resonance (CMR) substudy of the CONDI-2/ERIC-PPCI trial. This single-blind multi-centre trial (7 sites in UK and Denmark) included 169 ST-segment elevation myocardial infarction (STEMI) patients who were already randomised to either control (n = 89) or limb RIC (n = 80) (4 × 5 min cycles of arm cuff inflations/deflations) prior to primary percutaneous coronary intervention. CMR was performed acutely and at 6 months. The primary endpoint was MI size on the 6 month CMR scan, expressed as median and interquartile range. In 110 patients with 6-month CMR data, limb RIC did not reduce MI size [RIC: 13.0 (5.1-17.1)% of LV mass; control: 11.1 (7.0-17.8)% of LV mass, P = 0.39], or LVEF, when compared to control. In 162 patients with acute CMR data, limb RIC had no effect on acute MI size, microvascular obstruction and LVEF when compared to control. In a subgroup of anterior STEMI patients, RIC was associated with lower incidence of microvascular obstruction and higher LVEF on the acute scan when compared with control, but this was not associated with an improvement in LVEF at 6 months. In summary, in this pre-planned CMR substudy of the CONDI-2/ERIC-PPCI trial, there was no evidence that limb RIC reduced MI size or improved LVEF at 6 months by CMR, findings which are consistent with the neutral effects of limb RIC on clinical outcomes reported in the main CONDI-2/ERIC-PPCI trial.
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Affiliation(s)
- Rohin Francis
- The Hatter Cardiovascular Institute, University College London, London, WC1E 6HX, UK
| | - Jun Chong
- Cardiovascular and Metabolic Disorders Program, Duke-National University of Singapore Medical School, Singapore, Singapore
- Department of Cardiology, National Heart Centre, Singapore, Singapore
| | - Manish Ramlall
- The Hatter Cardiovascular Institute, University College London, London, WC1E 6HX, UK
| | - Chiara Bucciarelli-Ducci
- Biomedical Research Centre, Bristol Heart Institute, National Institute of Health Research (NIHR), University Hospitals Bristol NHS Foundation Trust and University of Bristol, Upper Maudlin St, Bristol, BS2 8HW, UK
| | - Tim Clayton
- London School of Hygiene and Tropical Medicine Clinical Trials Unit, London, UK
| | - Matthew Dodd
- London School of Hygiene and Tropical Medicine Clinical Trials Unit, London, UK
| | - Thomas Engstrøm
- Rigshospitalet, Department of Cardiology, University of Copenhagen, Copenhagen, Denmark
| | - Richard Evans
- London School of Hygiene and Tropical Medicine Clinical Trials Unit, London, UK
| | - Vanessa M Ferreira
- Division of Cardiovascular Medicine, Radcliffe Department of Medicine, University of Oxford, Oxford, UK
- National Institute of Health Research (NIHR) Oxford Biomedical Research Centre, Oxford, UK
- British Heart Foundation Centre of Research Excellence, Oxford, UK
| | - Marianna Fontana
- Royal Free Hospital London and Institute of Cardiovascular Science, University College London, London, UK
| | - John P Greenwood
- Leeds Institute of Cardiovascular and Metabolic Medicine, University of Leeds, Leeds, UK
- Leeds Teaching Hospitals NHS Trust, Leeds, UK
| | - Rajesh K Kharbanda
- Division of Cardiovascular Medicine, Radcliffe Department of Medicine, University of Oxford, Oxford, UK
| | - Won Yong Kim
- Department of Cardiology, Aarhus University Hospital, Aarhus, Denmark
- Department of Clinical Medicine, Aarhus University, Aarhus, Denmark
- Department of MR Research Centre, Aarhus University Hospital, Aarhus, Denmark
| | - Tushar Kotecha
- Royal Free Hospital London and Institute of Cardiovascular Science, University College London, London, UK
| | - Jacob T Lønborg
- Rigshospitalet, Department of Cardiology, University of Copenhagen, Copenhagen, Denmark
| | - Anthony Mathur
- Department of Cardiology, Barts Heart Centre, Barts Health NHS Trust, London, UK
- William Harvey Research Institute, Queen Mary University London, London, UK
| | - Ulla Kristine Møller
- Department of Cardiology, Aarhus University Hospital, Aarhus, Denmark
- Department of Clinical Medicine, Aarhus University, Aarhus, Denmark
- Department of MR Research Centre, Aarhus University Hospital, Aarhus, Denmark
| | - James Moon
- Department of Cardiology, Barts Heart Centre, Barts Health NHS Trust, London, UK
| | - Alexander Perkins
- London School of Hygiene and Tropical Medicine Clinical Trials Unit, London, UK
| | - Roby D Rakhit
- Royal Free Hospital London and Institute of Cardiovascular Science, University College London, London, UK
| | - Derek M Yellon
- The Hatter Cardiovascular Institute, University College London, London, WC1E 6HX, UK
| | - Hans Erik Bøtker
- Department of Cardiology, Aarhus University Hospital, Aarhus, Denmark
- Department of Clinical Medicine, Aarhus University, Aarhus, Denmark
- Department of MR Research Centre, Aarhus University Hospital, Aarhus, Denmark
| | - Heerajnarain Bulluck
- Leeds Institute of Cardiovascular and Metabolic Medicine, University of Leeds, Leeds, UK
- Department of Cardiology, Leeds General Infirmary, Leeds Teaching Hospitals NHS Trust, Leeds, UK
| | - Derek J Hausenloy
- The Hatter Cardiovascular Institute, University College London, London, WC1E 6HX, UK.
- Cardiovascular and Metabolic Disorders Program, Duke-National University of Singapore Medical School, Singapore, Singapore.
- Department of Cardiology, National Heart Centre, Singapore, Singapore.
- National Heart Research Institute Singapore, National Heart Centre, Singapore, Singapore.
- Yong Loo Lin School of Medicine, National University Singapore, Singapore, Singapore.
- Cardiovascular Research Center, College of Medical and Health Sciences, Asia University, Taichung, Taiwan.
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Xiao X, Lin L, Zhu C, Yang X, Ni Y, Zhipeng L, Chong J, Han Y. Efficacy and Safety of Nemolizumab for Treatment of Adult Atopic Dermatitis: A Meta-analysis of Randomized Clinical Trials. J Investig Allergol Clin Immunol 2021; 31:190-192. [PMID: 33876738 DOI: 10.18176/jiaci.0672] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Affiliation(s)
- X Xiao
- Department of Dermatology, the Union Hospital, Fujian Medical University, Fuzhou, P.R. China
| | - L Lin
- Department of Dermatology, the Union Hospital, Fujian Medical University, Fuzhou, P.R. China
| | - C Zhu
- Department of Dermatology, the Union Hospital, Fujian Medical University, Fuzhou, P.R. China
| | - X Yang
- Department of Dermatology, the Union Hospital, Fujian Medical University, Fuzhou, P.R. China
| | - Y Ni
- Department of Dermatology, the Union Hospital, Fujian Medical University, Fuzhou, P.R. China
| | - L Zhipeng
- Department of Dermatology, the Union Hospital, Fujian Medical University, Fuzhou, P.R. China
| | - J Chong
- College of Materials Science and Engineering, Nanjing Forestry University, Nanjing, P.R. China
| | - Y Han
- Department of Dermatology, the Union Hospital, Fujian Medical University, Fuzhou, P.R. China
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Deshmukh T, Selvakumar D, Thavapalachandran S, Archer O, Grieve S, Chong J. Improvement in Cardiac Strain Metrics With Platelet Derived Growth Factor-AB Administration in a Porcine Ischaemia Heart Failure Model. Heart Lung Circ 2021. [DOI: 10.1016/j.hlc.2021.06.079] [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] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Teo JY, Ho AFW, Bulluck H, Gao F, Chong J, Koh YX, Tan EK, Abdul Latiff JB, Chua SH, Goh BKP, Chan CY, Chung AYF, Lee SY, Cheow PC, Ooi LLPJ, Davidson BR, Jevaraj PR, Hausenloy DJ. Effect of remote ischemic preConditioning on liver injury in patients undergoing liver resection: the ERIC-LIVER trial. HPB (Oxford) 2020; 22:1250-1257. [PMID: 32007393 DOI: 10.1016/j.hpb.2019.12.002] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/09/2019] [Revised: 11/11/2019] [Accepted: 12/02/2019] [Indexed: 02/06/2023]
Abstract
OBJECTIVE Novel hepatoprotective strategies are needed to improve clinical outcomes during liver surgery. There is mixed data on the role of remote ischemic preconditioning (RIPC). We investigated RIPC in partial hepatectomy for primary hepatocellular carcinoma (HCC). METHODS This was a Phase II, single-center, sham-controlled, randomized controlled trial (RCT). The primary hypothesis was that RIPC would reduce acute liver injury following surgery indicated by serum alanine transferase (ALT) 24 h following hepatectomy in patients with primary HCC, compared to sham. Patients were randomized to receive either four cycles of 5 min/5 min arm cuff inflation/deflation immediately prior to surgery, or sham. Secondary endpoints included clinical, biochemical and pathological outcomes. Liver function measured by Indocyanine Green pulse densitometry was performed in a subset of patients. RESULTS 24 and 26 patients were randomized to RIPC and control groups respectively. The groups were balanced for baseline characteristics, except the duration of operation was longer in the RIPC group. Median ALT at 24 h was similar between groups (196 IU/L IQR 113.5-419.5 versus 172.5 IU/L IQR 115-298 respectively, p = 0.61). Groups were similar in secondary endpoints. CONCLUSION This RCT did not demonstrate beneficial effects with RIPC on serum ALT levels 24 h after partial hepatectomy.
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Affiliation(s)
- Jin Yao Teo
- Department of Hepato-pancreato-biliary and Transplant Surgery, Singapore General Hospital, Singapore
| | - Andrew F W Ho
- Department of Emergency Medicine, Singapore General Hospital, Singapore; SingHealth Duke-NUS Emergency Medicine Academic Clinical Programme, Singapore; Cardiovascular & Metabolic Disorders Program, Duke-National University of Singapore Medical School, Singapore; National Heart Research Institute Singapore, National Heart Centre, Singapore
| | | | - Fei Gao
- National Heart Research Institute Singapore, National Heart Centre, Singapore; Health Services and Systems Research, Duke-National University of Singapore Medical School, Singapore
| | - Jun Chong
- Cardiovascular & Metabolic Disorders Program, Duke-National University of Singapore Medical School, Singapore; National Heart Research Institute Singapore, National Heart Centre, Singapore
| | - Ye Xin Koh
- Department of Hepato-pancreato-biliary and Transplant Surgery, Singapore General Hospital, Singapore
| | - Ek Khoon Tan
- Department of Hepato-pancreato-biliary and Transplant Surgery, Singapore General Hospital, Singapore
| | - Julianah B Abdul Latiff
- Department of Hepato-pancreato-biliary and Transplant Surgery, Singapore General Hospital, Singapore
| | - Siew H Chua
- Department of Hepato-pancreato-biliary and Transplant Surgery, Singapore General Hospital, Singapore
| | - Brian K P Goh
- Department of Hepato-pancreato-biliary and Transplant Surgery, Singapore General Hospital, Singapore
| | - Chung Yip Chan
- Department of Hepato-pancreato-biliary and Transplant Surgery, Singapore General Hospital, Singapore
| | - Alexander Y F Chung
- Department of Hepato-pancreato-biliary and Transplant Surgery, Singapore General Hospital, Singapore
| | - Ser Yee Lee
- Department of Hepato-pancreato-biliary and Transplant Surgery, Singapore General Hospital, Singapore
| | - Peng Chung Cheow
- Department of Hepato-pancreato-biliary and Transplant Surgery, Singapore General Hospital, Singapore
| | - London L P J Ooi
- Department of Hepato-pancreato-biliary and Transplant Surgery, Singapore General Hospital, Singapore
| | - Brian R Davidson
- Division of Surgery and Intervention Science, Royal Free Campus, University College London, UK; Department of Hepato Pancreato Biliary Surgery and Liver Transplantation, Royal Free Hospital Foundation Trust, UK
| | - Prema Raj Jevaraj
- Department of Hepato-pancreato-biliary and Transplant Surgery, Singapore General Hospital, Singapore
| | - Derek J Hausenloy
- Cardiovascular & Metabolic Disorders Program, Duke-National University of Singapore Medical School, Singapore; National Heart Research Institute Singapore, National Heart Centre, Singapore; Yong Loo Lin School of Medicine, National University Singapore, Singapore; The Hatter Cardiovascular Institute, University College London, London, UK; Cardiovascular Research Center, College of Medical and Health Sciences, Asia University, Taiwan; Tecnologico de Monterrey, Centro de Biotecnologia-FEMSA, Nuevo Leon, Mexico.
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12
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Wu X, Shi Z, Hsu D, Huynh M, Yamada D, Chong J, Mendoza L, Hwang S. 857 An in vitro assay of inflammatory monocyte-keratinocyte activation predicts in vivo activity of BET inhibitors in a preclinical model of psoriasis. J Invest Dermatol 2020. [DOI: 10.1016/j.jid.2020.03.873] [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] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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13
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Sia CH, Zheng H, Ho AFW, Bulluck H, Chong J, Foo D, Foo LL, Lim PZY, Liew BW, Tan HC, Yeo TC, Chua TSJ, Chan MYY, Hausenloy DJ. The Lipid Paradox is present in ST-elevation but not in non-ST-elevation myocardial infarction patients: Insights from the Singapore Myocardial Infarction Registry. Sci Rep 2020; 10:6799. [PMID: 32321961 PMCID: PMC7176706 DOI: 10.1038/s41598-020-63825-8] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2019] [Accepted: 04/06/2020] [Indexed: 12/12/2022] Open
Abstract
Lowering low-density lipoprotein (LDL-C) and triglyceride (TG) levels form the cornerstone approach of cardiovascular risk reduction, and a higher high-density lipoprotein (HDL-C) is thought to be protective. However, in acute myocardial infarction (AMI) patients, higher admission LDL-C and TG levels have been shown to be associated with better clinical outcomes - termed the ‘lipid paradox’. We studied the relationship between lipid profile obtained within 72 hours of presentation, and all-cause mortality (during hospitalization, at 30-days and 12-months), and rehospitalization for heart failure and non-fatal AMI at 12-months in ST-segment elevation myocardial infarction (STEMI) and non-ST-segment elevation myocardial infarction (NSTEMI) patients treated by percutaneous coronary intervention (PCI). We included 11543 STEMI and 8470 NSTEMI patients who underwent PCI in the Singapore Myocardial Infarction Registry between 2008–2015. NSTEMI patients were older (60.3 years vs 57.7 years, p < 0.001) and more likely to be female (22.4% vs 15.0%, p < 0.001). In NSTEMI, a lower LDL-C was paradoxically associated with worse outcomes for death during hospitalization, within 30-days and within 12-months (all p < 0.001), but adjustment eliminated this paradox. In contrast, the paradox for LDL-C persisted for all primary outcomes after adjustment in STEMI. For NSTEMI patients, a lower HDL-C was associated with a higher risk of death during hospitalization but in STEMI patients a lower HDL-C was paradoxically associated with a lower risk of death during hospitalization. For this endpoint, the interaction term for HDL-C and type of MI was significant even after adjustment. An elevated TG level was not protective after adjustment. These observations may be due to differing characteristics and underlying pathophysiological mechanisms in NSTEMI and STEMI.
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Affiliation(s)
- Ching-Hui Sia
- Department of Cardiology, National University Heart Centre, Singapore, Singapore.,Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
| | - Huili Zheng
- Health Promotion Board, National Registry of Diseases Office, Singapore, Singapore
| | - Andrew Fu-Wah Ho
- SingHealth Duke-NUS Emergency Medicine Academic Clinical Programme, Singapore, Singapore.,Cardiovascular & Metabolic Disorders Program, Duke-NUS Medical School, Singapore, Singapore.,National Heart Research Institute Singapore, National Heart Centre, Singapore, Singapore
| | | | - Jun Chong
- Cardiovascular & Metabolic Disorders Program, Duke-NUS Medical School, Singapore, Singapore.,National Heart Research Institute Singapore, National Heart Centre, Singapore, Singapore
| | - David Foo
- Tan Tock Seng Hospital, Singapore, Singapore
| | - Ling-Li Foo
- Health Promotion Board, National Registry of Diseases Office, Singapore, Singapore
| | | | | | - Huay-Cheem Tan
- Department of Cardiology, National University Heart Centre, Singapore, Singapore.,Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
| | - Tiong-Cheng Yeo
- Department of Cardiology, National University Heart Centre, Singapore, Singapore.,Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
| | | | - Mark Yan-Yee Chan
- Department of Cardiology, National University Heart Centre, Singapore, Singapore.,Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
| | - Derek J Hausenloy
- Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore. .,Cardiovascular & Metabolic Disorders Program, Duke-NUS Medical School, Singapore, Singapore. .,National Heart Research Institute Singapore, National Heart Centre, Singapore, Singapore. .,The Hatter Cardiovascular Institute, University College London, London, United Kingdom. .,Cardiovascular Research Center, College of Medical and Health Sciences, Asia University, Taichung City, Taiwan.
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14
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Hughes D, Dailianis A, Duncan L, Briggs J, McKintyre DA, Silbernagel K, Anderson G, Anderson J, Bannach B, Barratt C, Booyens C, Briggs J, Brooks R, Bryant D, Burnie A, Carver C, Chambers D, Chong J, Clarke D, Coates E, Comontofski G, Deiss K, Destro C, Dillon J, Duncan L, Dundas M, Dymond N, Dziedziczak D, Eglezos S, Gasanov U, Gebler J, Graham T, Haley E, Johnson L, Kurien S, Maczuga J, Matera J, Matthew K, Munyard S, Ramine A, Reed J, Remes A, Subasinghe N, Tan A, Tan J, Tatum M, Taylor M, Torrance H, Twohy C, Vialpando M, Watts K. Modification of Enrichment Protocols for TECRA Listeria Visual Immunoassay Method 995.22: Collaborative Study. J AOAC Int 2019. [DOI: 10.1093/jaoac/86.2.340] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Abstract
Abstract
A collaborative study was conducted to validate new enrichment methods for the TECRA Listeria Visual Immunoassay (TLVIA). These new methods incorporate a newly formulated medium, TECRA Listeria Enrichment Broth, which does not contain the highly toxic antifungal agent, cycloheximide. The new procedures will provide an alternative to the enrichment procedures described in AOAC Method 995.22. Three food types (raw ground beef, lettuce, and ice cream) were analyzed in the United States, and 2 food types (cooked turkey and cooked fish fillets) were analyzed in Australasia. Thirty collaborators participated in the study, 16 in Australasia and 14 in the United States. With the exception of one batch of ground beef, comparison of the proportion of positive test portions (p ≥ 0.05) showed no significant difference between the TLVIA and the reference method for the 5 foods at 3 inoculation levels. For the one batch of naturally contaminated raw ground beef, the TLVIA gave significantly more confirmed positive results than the reference method.
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Affiliation(s)
- Denise Hughes
- TECRA International, 13 Rodborough Rd, French’s Forest, NSW 2086, Australia
| | - Angela Dailianis
- TECRA International, 13 Rodborough Rd, French’s Forest, NSW 2086, Australia
| | - Louise Duncan
- TECRA International, 13 Rodborough Rd, French’s Forest, NSW 2086, Australia
| | - Julie Briggs
- TECRA International, 13 Rodborough Rd, French’s Forest, NSW 2086, Australia
| | | | - Karen Silbernagel
- rtech laboratories, Lexington Ave, N. Arden Hills, Minneapolis, MN 55126
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15
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Chong J, Ho AF, Yap J, Bulluck H, Hausenloy DJ. Is there a role for remote ischemic conditioning in preventing 5-fluorouracil-induced coronary vasospasm? Cond Med 2019; 2:204-212. [PMID: 32133437 PMCID: PMC7055861] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Cardiac ischemia associated with chemotherapy has been linked to several anti-neoplastic agents and is multifactorial in etiology. Coronary artery vasospasm is one of the most commonly reported effects of cancer therapy that can lead to myocardial ischemia or infarction. The chemotherapy agent 5-fluorouracil (5-FU) or its oral pro-drug capecitabine can result in coronary vascular endothelial dysfunction causing coronary artery spasm, and possibly coronary thrombosis. These drugs have also been shown to be associated with myocardial infarction, malignant ventricular arrhythmias, heart failure, cardiogenic shock, and sudden death. The proposed mechanisms underlying cardiotoxicity induced by 5-FU are vascular endothelial damage followed by thrombus formation, ischemia secondary to coronary artery vasospasm, direct toxicity on myocardium, and thrombogenicity. There remains a pressing need to discover novel and effective therapies that can prevent or ameliorate 5-FU associated cardiotoxicity. To this point, promising overlap has been observed between proposed remote ischemic conditioning (RIC) cardioprotective mechanisms and 5FU-associated cardiotoxic cellular pathways. RIC, in which transient episodes of limb ischemia and reperfusion (induced by inflations and deflations of a pneumatic cuff placed on the upper arm or thigh), confer both cardioprotective and vasculoprotective effects, and may therefore prevent 5-FU coronary artery spasm/cardiotoxicity. In this review, we will be discussing the following potentially therapeutic aspects of RIC in ameliorating 5-FU associated cardiotoxicity: sequential phases of 5-FU cardiotoxicity as possible targets for dual windows of cardioprotection characteristic of RIC; protective effects of RIC on endothelial function and microvasculature in relation to 5-FU induced endothelial dysfunction/microvascular dysfunction; reduction in platelet activation by RIC in the context of 5-FU induced thrombogenicity; and the utility of improvement in mitochondrial function conferred by RIC in 5-FU induced cellular toxicity secondary to mitochondrial dysfunction.
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Affiliation(s)
- Jun Chong
- Barts Heart Centre, St Bartholomew's Hospital, London, United Kingdom
- National Heart Centre Singapore, Singapore
- Cardiovascular and Metabolic Disorders Program, Duke-National University of Singapore, Singapore
| | - Andrew Fw Ho
- Cardiovascular and Metabolic Disorders Program, Duke-National University of Singapore, Singapore
- National Heart Research Institute Singapore, National Heart Centre Singapore, Singapore
- Department of Emergency Medicine, Singapore General Hospital
| | - Jonathan Yap
- Center for Cardiovascular Research, John A. Burns School of Medicine, University of Hawaii, USA
| | | | - Derek J Hausenloy
- National Heart Centre Singapore, Singapore
- Cardiovascular and Metabolic Disorders Program, Duke-National University of Singapore, Singapore
- The National Institute of Health Research University College London Hospitals Biomedical Research Centre, London, United Kingdom
- Yong Loo Lin School of Medicine, National University Singapore, Singapore
- The Hatter Cardiovascular Institute, University College London, London, UK
- Tecnologico de Monterrey, Centro de Biotecnologia-FEMSA, Nuevo Leon, Mexico
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16
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Sun S, Bonaffini PA, Nougaret S, Fournier L, Dohan A, Chong J, Smith J, Addley H, Reinhold C. How to differentiate uterine leiomyosarcoma from leiomyoma with imaging. Diagn Interv Imaging 2019; 100:619-634. [PMID: 31427216 DOI: 10.1016/j.diii.2019.07.007] [Citation(s) in RCA: 50] [Impact Index Per Article: 10.0] [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: 06/27/2019] [Revised: 07/14/2019] [Accepted: 07/15/2019] [Indexed: 12/16/2022]
Abstract
Uterine leiomyomas, the most frequent benign myomatous tumors of the uterus, often cannot be distinguished from malignant uterine leiomyosarcomas using clinical criteria. Furthermore, imaging differentiation between both entities is frequently challenging due to their potential overlapping features. Because a suspected leiomyoma is often managed conservatively or with minimally invasive treatments, the misdiagnosis of leiomyosarcoma for a benign leiomyoma could potentially result in significant treatment delays, therefore increasing morbidity and mortality. In this review, we provide an overview of the differences between leiomyoma and leiomyosarcoma, mainly focusing on imaging characteristics, but also briefly touching upon their demographic, histopathological and clinical differences. The main indications and limitations of available cross-sectional imaging techniques are discussed, including ultrasound, computed tomography, magnetic resonance imaging (MRI) and positron emission tomography/computed tomography. A particular emphasis is placed on the review of specific MRI features that may allow distinction between leiomyomas and leiomyosarcomas according to the most recent evidence in the literature. The potential contribution of texture analysis is also discussed. In order to help guide-imaging diagnosis, we provide an MRI-based diagnostic algorithm which takes into account morphological and functional features, both individually and in combination, in an attempt to optimize radiologic differentiation of leiomyomas from leiomyosarcomas.
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Affiliation(s)
- S Sun
- Department of Radiology, McGill University Health Centre, 1001 Decarie boulevard, H4A 3J1 Montreal, QC, Canada.
| | - P A Bonaffini
- Department of Radiology, McGill University Health Centre, 1001 Decarie boulevard, H4A 3J1 Montreal, QC, Canada
| | - S Nougaret
- Inserm, U1194, Department of Radiology, Montpellier Cancer Institute, University of Montpellier, 34295 Montpellier, France
| | - L Fournier
- Université de Paris, Descartes-Paris 5, 75006 Paris, France; Department of Radiology, Hôpital Européen Georges Pompidou, Assistance Publique-Hôpitaux de Paris, 75015 Paris, France
| | - A Dohan
- Université de Paris, Descartes-Paris 5, 75006 Paris, France; Department of Radiology A, Hôpital Cochin, Assistance Publique-Hôpitaux de Paris, 75014 Paris, France
| | - J Chong
- Department of Radiology, McGill University Health Centre, 1001 Decarie boulevard, H4A 3J1 Montreal, QC, Canada
| | - J Smith
- Department of Radiology, Cambridge University Hospitals, NHS Foundation Trust, CB2 0QQ Cambridge, United Kingdom
| | - H Addley
- Department of Radiology, Cambridge University Hospitals, NHS Foundation Trust, CB2 0QQ Cambridge, United Kingdom
| | - C Reinhold
- Department of Radiology, McGill University Health Centre, 1001 Decarie boulevard, H4A 3J1 Montreal, QC, Canada
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17
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Chong J, Bulluck H, FW Ho A, Boisvert WA, Hausenloy DJ. Chronic remote ischemic conditioning for cardiovascular protection. Cond Med 2019; 2:164-169. [PMID: 32313876 PMCID: PMC7169952] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
New treatments are needed to prevent adverse left ventricular remodelling following acute myocardial infarction (AMI), in order to prevent heart failure and improve clinical outcomes following AMI. Remote ischemic conditioning (RIC) using transient limb ischemia and reperfusion has been reported to reduce myocardial infarct (MI) size in AMI patients treated by primary percutaneous coronary intervention, and whether it can improve clinical outcomes is currently being investigated. Interestingly, repeated daily episode of limb RIC (termed 'chronic remote ischemic conditioning', or CRIC) has been shown in experimental and clinical studies to confer beneficial effects on post-AMI cardiac remodelling and chronic heart failure. In addition, the beneficial effects of CRIC extend to vascular function, peripheral arterial disease and stroke. In this review article, we focus on the therapeutic potential of CRIC as a strategy for cardiovascular protection and for improving clinical outcomes in patients with cardiovascular disease.
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Affiliation(s)
- Jun Chong
- Barts Heart Centre, St Bartholomew’s Hospital, London, United Kingdom
- National Heart Centre Singapore, Singapore
- Cardiovascular and Metabolic Disorders Program, Duke-National University of Singapore, Singapore
| | - Heerajnarain Bulluck
- National Heart Centre Singapore, Singapore
- Norfolk and Norwich University Hospital, Norwich, UK
| | - Andrew FW Ho
- Cardiovascular and Metabolic Disorders Program, Duke-National University of Singapore, Singapore
- National Heart Research Institute Singapore, National Heart Centre Singapore, Singapore
- Department of Emergency Medicine, Singapore General Hospital
| | - William A. Boisvert
- Center for Cardiovascular Research, John A. Burns School of Medicine, University of Hawaii, USA
- Institute of Fundamental Medicine and Biology, Kazan Federal University, Kazan, Russia
| | - Derek J Hausenloy
- National Heart Centre Singapore, Singapore
- Cardiovascular and Metabolic Disorders Program, Duke-National University of Singapore, Singapore
- The National Institute of Health Research University College London Hospitals Biomedical Research Centre, London, United Kingdom
- Yong Loo Lin School of Medicine, National University Singapore, Singapore
- The Hatter Cardiovascular Institute, University College London, London, UK
- Tecnologico de Monterrey, Centro de Biotecnologia-FEMSA, Nuevo Leon, Mexico
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18
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Durkie M, Chong J, Ong A. SAT-334 GENETIC TESTING OF FAMILIES WITH VERY EARLY ONSET POLYCYSTIC KIDNEY DISEASE REVEALS THE FUNCTIONAL SIGNIFICANCE OF HYPOMORPHIC VARIANTS. Kidney Int Rep 2019. [DOI: 10.1016/j.ekir.2019.05.380] [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] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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19
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Wu X, Yu S, Shi Z, Huynh M, Chong J, Hwang S. 693 BET inhibitor OTX015 reduces imiquimod-induced mouse psoriasiform dermatitis. J Invest Dermatol 2019. [DOI: 10.1016/j.jid.2019.03.769] [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] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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20
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Murtha L, Mabotuwana N, Hardy S, Bigland M, Coulter B, Hwang J, Ye J, Hume R, Chong J, Lee R, Boyle A. Fibulin-3 is Necessary for the Formation of Infarct-Induced Cardiac Fibrosis. Heart Lung Circ 2019. [DOI: 10.1016/j.hlc.2019.06.002] [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] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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21
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Kok C, Igoor S, Skelton R, Chong J, Kimberley D, Cabanes-Creus M, Alexander I, Lisowski L, Kizana E. Generation of Novel Cardiac Specific AAV Vectors by Directed Evolution in Human iPSC Derived Cardiomyocytes. Heart Lung Circ 2019. [DOI: 10.1016/j.hlc.2019.06.090] [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] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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22
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McLean K, Glasbey J, Borakati A, Brooks T, Chang H, Choi S, Goodson R, Nielsen M, Pronin S, Salloum N, Sewart E, Vanniasegaram D, Drake T, Gillies M, Harrison E, Chapman S, Khatri C, Kong C, Claireaux H, Bath M, Mohan M, McNamee L, Kelly M, Mitchell H, Fitzgerald J, Bhangu A, Nepogodiev D, Antoniou I, Dean R, Davies N, Trecarten S, Henderson I, Holmes C, Wylie J, Shuttleworth R, Jindal A, Hughes F, Gouda P, Fleck R, Hanrahan M, Karunakaran P, Chen J, Sykes M, Sethi R, Suresh S, Patel P, Patel M, Varma R, Mushtaq J, Gundogan B, Bolton W, Khan T, Burke J, Morley R, Favero N, Adams R, Thirumal V, Kennedy E, Ong K, Tan Y, Gabriel J, Bakhsh A, Low J, Yener A, Paraoan V, Preece R, Tilston T, Cumber E, Dean S, Ross T, McCance E, Amin H, Satterthwaite L, Clement K, Gratton R, Mills E, Chiu S, Hung G, Rafiq N, Hayes J, Robertson K, Dynes K, Huang H, Assadullah S, Duncumb J, Moon R, Poo S, Mehta J, Joshi K, Callan R, Norris J, Chilvers N, Keevil H, Jull P, Mallick S, Elf D, Carr L, Player C, Barton E, Martin A, Ratu S, Roberts E, Phan P, Dyal A, Rogers J, Henson A, Reid N, Burke D, Culleton G, Lynne S, Mansoor S, Brennan C, Blessed R, Holloway C, Hill A, Goldsmith T, Mackin S, Kim S, Woin E, Brent G, Coffin J, Ziff O, Momoh Z, Debenham R, Ahmed M, Yong C, Wan J, Copley H, Raut P, Chaudhry F, Nixon G, Dorman C, Tan R, Kanabar S, Canning N, Dolaghan M, Bell N, McMenamin M, Chhabra A, Duke K, Turner L, Patel T, Chew L, Mirza M, Lunawat S, Oremule B, Ward N, Khan M, Tan E, Maclennan D, McGregor R, Chisholm E, Griffin E, Bell L, Hughes B, Davies J, Haq H, Ahmed H, Ungcharoen N, Whacha C, Thethi R, Markham R, Lee A, Batt E, Bullock N, Francescon C, Davies J, Shafiq N, Zhao J, Vivekanantham S, Barai I, Allen J, Marshall D, McIntyre C, Wilson H, Ashton A, Lek C, Behar N, Davis-Hall M, Seneviratne N, Esteve L, Sirakaya M, Ali S, Pope S, Ahn J, Craig-McQuaide A, Gatfield W, Leong S, Demetri A, Kerr A, Rees C, Loveday J, Liu S, Wijesekera M, Maru D, Attalla M, Smith N, Brown D, Sritharan P, Shah A, Charavanamuttu V, Heppenstall-Harris G, Ng K, Raghvani T, Rajan N, Hulley K, Moody N, Williams M, Cotton A, Sharifpour M, Lwin K, Bright M, Chitnis A, Abdelhadi M, Semana A, Morgan F, Reid R, Dickson J, Anderson L, McMullan R, Ahern N, Asmadi A, Anderson L, Boon Xuan JL, Crozier L, McAleer S, Lees D, Adebayo A, Das M, Amphlett A, Al-Robeye A, Valli A, Khangura J, Winarski A, Ali A, Woodward H, Gouldthrope C, Turner M, Sasapu K, Tonkins M, Wild J, Robinson M, Hardie J, Heminway R, Narramore R, Ramjeeawon N, Hibberd A, Winslow F, Ho W, Chong B, Lim K, Ho S, Crewdson J, Singagireson S, Kalra N, Koumpa F, Jhala H, Soon W, Karia M, Rasiah M, Xylas D, Gilbert H, Sundar-Singh M, Wills J, Akhtar S, Patel S, Hu L, Brathwaite-Shirley C, Nayee H, Amin O, Rangan T, Turner E, McCrann C, Shepherd R, Patel N, Prest-Smith J, Auyoung E, Murtaza A, Coates A, Prys-Jones O, King M, Gaffney S, Dewdney C, Nehikhare I, Lavery J, Bassett J, Davies K, Ahmad K, Collins A, Acres M, Egerton C, Cheng K, Chen X, Chan N, Sheldon A, Khan S, Empey J, Ingram E, Malik A, Johnstone M, Goodier R, Shah J, Giles J, Sanders J, McLure S, Pal S, Rangedara A, Baker A, Asbjoernsen C, Girling C, Gray L, Gauntlett L, Joyner C, Qureshi S, Mogan Y, Ng J, Kumar A, Park J, Tan D, Choo K, Raman K, Buakuma P, Xiao C, Govinden S, Thompson O, Charalambos M, Brown E, Karsan R, Dogra T, Bullman L, Dawson P, Frank A, Abid H, Tung L, Qureshi U, Tahmina A, Matthews B, Harris R, O'Connor A, Mazan K, Iqbal S, Stanger S, Thompson J, Sullivan J, Uppal E, MacAskill A, Bamgbose F, Neophytou C, Carroll A, Rookes C, Datta U, Dhutia A, Rashid S, Ahmed N, Lo T, Bhanderi S, Blore C, Ahmed S, Shaheen H, Abburu S, Majid S, Abbas Z, Talukdar S, Burney L, Patel J, Al-Obaedi O, Roberts A, Mahboob S, Singh B, Sheth S, Karia P, Prabhudesai A, Kow K, Koysombat K, Wang S, Morrison P, Maheswaran Y, Keane P, Copley P, Brewster O, Xu G, Harries P, Wall C, Al-Mousawi A, Bonsu S, Cunha P, Ward T, Paul J, Nadanakumaran K, Tayeh S, Holyoak H, Remedios J, Theodoropoulou K, Luhishi A, Jacob L, Long F, Atayi A, Sarwar S, Parker O, Harvey J, Ross H, Rampal R, Thomas G, Vanmali P, McGowan C, Stein J, Robertson V, Carthew L, Teng V, Fong J, Street A, Thakker C, O'Reilly D, Bravo M, Pizzolato A, Khokhar H, Ryan M, Cheskes L, Carr R, Salih A, Bassiony S, Yuen R, Chrastek D, Rosen O'Sullivan H, Amajuoyi A, Wang A, Sitta O, Wye J, Qamar M, Major C, Kaushal A, Morgan C, Petrarca M, Allot R, Verma K, Dutt S, Chilima C, Peroos S, Kosasih S, Chin H, Ashken L, Pearse R, O'Loughlin R, Menon A, Singh K, Norton J, Sagar R, Jathanna N, Rothwell L, Watson N, Harding F, Dube P, Khalid H, Punjabi N, Sagmeister M, Gill P, Shahid S, Hudson-Phillips S, George D, Ashwood J, Lewis T, Dhar M, Sangal P, Rhema I, Kotecha D, Afzal Z, Syeed J, Prakash E, Jalota P, Herron J, Kimani L, Delport A, Shukla A, Agarwal V, Parthiban S, Thakur H, Cymes W, Rinkoff S, Turnbull J, Hayat M, Darr S, Khan U, Lim J, Higgins A, Lakshmipathy G, Forte B, Canning E, Jaitley A, Lamont J, Toner E, Ghaffar A, McDowell M, Salmon D, O'Carroll O, Khan A, Kelly M, Clesham K, Palmer C, Lyons R, Bell A, Chin R, Waldron R, Trimble A, Cox S, Ashfaq U, Campbell J, Holliday R, McCabe G, Morris F, Priestland R, Vernon O, Ledsam A, Vaughan R, Lim D, Bakewell Z, Hughes R, Koshy R, Jackson H, Narayan P, Cardwell A, Jubainville C, Arif T, Elliott L, Gupta V, Bhaskaran G, Odeleye A, Ahmed F, Shah R, Pickard J, Suleman Y, North A, McClymont L, Hussain N, Ibrahim I, Ng G, Wong V, Lim A, Harris L, Tharmachandirar T, Mittapalli D, Patel V, Lakhani M, Bazeer H, Narwani V, Sandhu K, Wingfield L, Gentry S, Adjei H, Bhatti M, Braganza L, Barnes J, Mistry S, Chillarge G, Stokes S, Cleere J, Wadanamby S, Bucko A, Meek J, Boxall N, Heywood E, Wiltshire J, Toh C, Ward A, Shurovi B, Horth D, Patel B, Ali B, Spencer T, Axelson T, Kretzmer L, Chhina C, Anandarajah C, Fautz T, Horst C, Thevathasan A, Ng J, Hirst F, Brewer C, Logan A, Lockey J, Forrest P, Keelty N, Wood A, Springford L, Avery P, Schulz T, Bemand T, Howells L, Collier H, Khajuria A, Tharakan R, Parsons S, Buchan A, McGalliard R, Mason J, Cundy O, Li N, Redgrave N, Watson R, Pezas T, Dennis Y, Segall E, Hameed M, Lynch A, Chamberlain M, Peck F, Neo Y, Russell G, Elseedawy M, Lee S, Foster N, Soo Y, Puan L, Dennis R, Goradia H, Qureshi A, Osman S, Reeves T, Dinsmore L, Marsden M, Lu Q, Pitts-Tucker T, Dunn C, Walford R, Heathcote E, Martin R, Pericleous A, Brzyska K, Reid K, Williams M, Wetherall N, McAleer E, Thomas D, Kiff R, Milne S, Holmes M, Bartlett J, Lucas de Carvalho J, Bloomfield T, Tongo F, Bremner R, Yong N, Atraszkiewicz B, Mehdi A, Tahir M, Sherliker G, Tear A, Pandey A, Broyd A, Omer H, Raphael M, Chaudhry W, Shahidi S, Jawad A, Gill C, Fisher IH, Adeleja I, Clark I, Aidoo-Micah G, Stather P, Salam G, Glover T, Deas G, Sim N, Obute R, Wynell-Mayow W, Sait M, Mitha N, de Bernier G, Siddiqui M, Shaunak R, Wali A, Cuthbert G, Bhudia R, Webb E, Shah S, Ansari N, Perera M, Kelly N, McAllister R, Stanley G, Keane C, Shatkar V, Maxwell-Armstrong C, Henderson L, Maple N, Manson R, Adams R, Semple E, Mills M, Daoub A, Marsh A, Ramnarine A, Hartley J, Malaj M, Jewell P, Whatling E, Hitchen N, Chen M, Goh B, Fern J, Rogers S, Derbyshire L, Robertson D, Abuhussein N, Deekonda P, Abid A, Harrison P, Aildasani L, Turley H, Sherif M, Pandey G, Filby J, Johnston A, Burke E, Mohamud M, Gohil K, Tsui A, Singh R, Lim S, O'Sullivan K, McKelvey L, O'Neill S, Roberts H, Brown F, Cao Y, Buckle R, Liew Y, Sii S, Ventre C, Graham C, Filipescu T, Yousif A, Dawar R, Wright A, Peters M, Varley R, Owczarek S, Hartley S, Khattak M, Iqbal A, Ali M, Durrani B, Narang Y, Bethell G, Horne L, Pinto R, Nicholls K, Kisyov I, Torrance H, English W, Lakhani S, Ashraf S, Venn M, Elangovan V, Kazmi Z, Brecher J, Sukumar S, Mastan A, Mortimer A, Parker J, Boyle J, Elkawafi M, Beckett J, Mohite A, Narain A, Mazumdar E, Sreh A, Hague A, Weinberg D, Fletcher L, Steel M, Shufflebotham H, Masood M, Sinha Y, Jenvey C, Kitt H, Slade R, Craig A, Deall C, Reakes T, Chervenkoff J, Strange E, O'Bryan M, Murkin C, Joshi D, Bergara T, Naqib S, Wylam D, Scotcher S, Hewitt C, Stoddart M, Kerai A, Trist A, Cole S, Knight C, Stevens S, Cooper G, Ingham R, Dobson J, O'Kane A, Moradzadeh J, Duffy A, Henderson C, Ashraf S, McLaughin C, Hoskins T, Reehal R, Bookless L, McLean R, Stone E, Wright E, Abdikadir H, Roberts C, Spence O, Srikantharajah M, Ruiz E, Matthews J, Gardner E, Hester E, Naran P, Simpson R, Minhas M, Cornish E, Semnani S, Rojoa D, Radotra A, Eraifej J, Eparh K, Smith D, Mistry B, Hickling S, Din W, Liu C, Mithrakumar P, Mirdavoudi V, Rashid M, Mcgenity C, Hussain O, Kadicheeni M, Gardner H, Anim-Addo N, Pearce J, Aslanyan A, Ntala C, Sorah T, Parkin J, Alizadeh M, White A, Edozie F, Johnston J, Kahar A, Navayogaarajah V, Patel B, Carter D, Khonsari P, Burgess A, Kong C, Ponweera A, Cody A, Tan Y, Ng A, Croall A, Allan C, Ng S, Raghuvir V, Telfer R, Greenhalgh A, McKerr C, Edison M, Patel B, Dear K, Hardy M, Williams P, Hassan S, Sajjad U, O'Neill E, Lopes S, Healy L, Jamal N, Tan S, Lazenby D, Husnoo S, Beecroft S, Sarvanandan T, Weston C, Bassam N, Rabinthiran S, Hayat U, Ng L, Varma D, Sukkari M, Mian A, Omar A, Kim J, Sellathurai J, Mahmood J, O'Connell C, Bose R, Heneghan H, Lalor P, Matheson J, Doherty C, Cullen C, Cooper D, Angelov S, Drislane C, Smith A, Kreibich A, Palkhi E, Durr A, Lotfallah A, Gold D, Mckean E, Dhanji A, Anilkumar A, Thacoor A, Siddiqui Z, Lim S, Piquet A, Anderson S, McCormack D, Gulati J, Ibrahim A, Murray S, Walsh S, McGrath A, Ziprin P, Chua E, Lou C, Bloomer J, Paine H, Osei-Kuffour D, White C, Szczap A, Gokani S, Patel K, Malys M, Reed A, Torlot G, Cumber E, Charania A, Ahmad S, Varma N, Cheema H, Austreng L, Petra H, Chaudhary M, Zegeye M, Cheung F, Coffey D, Heer R, Singh S, Seager E, Cumming S, Suresh R, Verma S, Ptacek I, Gwozdz A, Yang T, Khetarpal A, Shumon S, Fung T, Leung W, Kwang P, Chew L, Loke W, Curran A, Chan C, McGarrigle C, Mohan K, Cullen S, Wong E, Toale C, Collins D, Keane N, Traynor B, Shanahan D, Yan A, Jafree D, Topham C, Mitrasinovic S, Omara S, Bingham G, Lykoudis P, Miranda B, Whitehurst K, Kumaran G, Devabalan Y, Aziz H, Shoa M, Dindyal S, Yates J, Bernstein I, Rattan G, Coulson R, Stezaker S, Isaac A, Salem M, McBride A, McFarlane H, Yow L, MacDonald J, Bartlett R, Turaga S, White U, Liew W, Yim N, Ang A, Simpson A, McAuley D, Craig E, Murphy L, Shepherd P, Kee J, Abdulmajid A, Chung A, Warwick H, Livesey A, Holton P, Theodoreson M, Jenkin S, Turner J, Entwisle J, Marchal S, O'Connor S, Blege H, Aithie J, Sabine L, Stewart G, Jackson S, Kishore A, Lankage C, Acquaah F, Joyce H, McKevitt K, Coffey C, Fawaz A, Dolbec K, O'Sullivan D, Geraghty J, Lim E, Bolton L, FitzPatrick D, Robinson C, Ramtoola T, Collinson S, Grundy L, McEnhill P, Harbhajan Singh G, Loughran D, Golding D, Keeling R, Williams R, Whitham R, Yoganathan S, Nachiappan R, Egan R, Owasil R, Kwan M, He A, Goh R, Bhome R, Wilson H, Teoh P, Raji K, Jayakody N, Matthams J, Chong J, Luk C, Greig R, Trail M, Charalambous G, Rocke A, Gardiner N, Bulley F, Warren N, Brennan E, Fergurson P, Wilson R, Whittingham H, Brown E, Khanijau R, Gandhi K, Morris S, Boulton A, Chandan N, Barthorpe A, Maamari R, Sandhu S, McCann M, Higgs L, Balian V, Reeder C, Diaper C, Sale T, Ali H, Archer C, Clarke A, Heskin J, Hurst P, Farmer J, O'Flynn L, Doan L, Shuker B, Stott G, Vithanage N, Hoban K, Nesargikar P, Kennedy H, Grossart C, Tan E, Roy C, Sim P, Leslie K, Sim D, Abul M, Cody N, Tay A, Woon E, Sng S, Mah J, Robson J, Shakweh E, Wing V, Mills H, Li M, Barrow T, Balaji S, Jordan H, Phillips C, Naveed H, Hirani S, Tai A, Ratnakumaran R, Sahathevan A, Shafi A, Seedat M, Weaver R, Batho A, Punj R, Selvachandran H, Bhatt N, Botchey S, Khonat Z, Brennan K, Morrison C, Devlin E, Linton A, Galloway E, McGarvie S, Ramsay N, McRobbie H, Whewell H, Dean W, Nelaj S, Eragat M, Mishra A, Kane T, Zuhair M, Wells M, Wilkinson D, Woodcock N, Sun E, Aziz N, Ghaffar MKA. Critical care usage after major gastrointestinal and liver surgery: a prospective, multicentre observational study. Br J Anaesth 2019; 122:42-50. [PMID: 30579405 DOI: 10.1016/j.bja.2018.07.029] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2018] [Revised: 07/19/2018] [Accepted: 07/23/2018] [Indexed: 11/23/2022] Open
Abstract
BACKGROUND Patient selection for critical care admission must balance patient safety with optimal resource allocation. This study aimed to determine the relationship between critical care admission, and postoperative mortality after abdominal surgery. METHODS This prespecified secondary analysis of a multicentre, prospective, observational study included consecutive patients enrolled in the DISCOVER study from UK and Republic of Ireland undergoing major gastrointestinal and liver surgery between October and December 2014. The primary outcome was 30-day mortality. Multivariate logistic regression was used to explore associations between critical care admission (planned and unplanned) and mortality, and inter-centre variation in critical care admission after emergency laparotomy. RESULTS Of 4529 patients included, 37.8% (n=1713) underwent planned critical care admissions from theatre. Some 3.1% (n=86/2816) admitted to ward-level care subsequently underwent unplanned critical care admission. Overall 30-day mortality was 2.9% (n=133/4519), and the risk-adjusted association between 30-day mortality and critical care admission was higher in unplanned [odds ratio (OR): 8.65, 95% confidence interval (CI): 3.51-19.97) than planned admissions (OR: 2.32, 95% CI: 1.43-3.85). Some 26.7% of patients (n=1210/4529) underwent emergency laparotomies. After adjustment, 49.3% (95% CI: 46.8-51.9%, P<0.001) were predicted to have planned critical care admissions, with 7% (n=10/145) of centres outside the 95% CI. CONCLUSIONS After risk adjustment, no 30-day survival benefit was identified for either planned or unplanned postoperative admissions to critical care within this cohort. This likely represents appropriate admission of the highest-risk patients. Planned admissions in selected, intermediate-risk patients may present a strategy to mitigate the risk of unplanned admission. Substantial inter-centre variation exists in planned critical care admissions after emergency laparotomies.
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Kazi S, Narayan A, Ong A, Denniss A, Tanous D, Sivagangabalan G, Chong J, Wynne D, Thakkar J, Kovoor P, Fahmy P, Chow C. Trends in Cardiovascular Risk Factors in STEMI Patients at an Urban Centre. Heart Lung Circ 2019. [DOI: 10.1016/j.hlc.2019.06.566] [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] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Kok C, Skelton R, Igoor S, Ghossein G, Rao R, Chong J, Kizana E. Protection of Cardiomyocytes against Doxorubicin-Induced Toxicity by Drug Transporter Mediated Efflux. Heart Lung Circ 2019. [DOI: 10.1016/j.hlc.2019.06.126] [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] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Kazi S, Geenty P, Selvakumar D, Klimis H, Ferkh A, Chong J, Thomas L. Right Ventricular Strain in the STEMI Population. Heart Lung Circ 2019. [DOI: 10.1016/j.hlc.2019.06.319] [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] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Chong J, Bulluck H, Yap EP, Ho AFW, Boisvert WA, Hausenloy DJ. Remote ischemic conditioning in ST-segment elevation myocardial infarction - an update. Cond Med 2018; 1:13-22. [PMID: 30338313 PMCID: PMC6191186] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Acute myocardial infarction (AMI) and the heart failure (HF) that often results are among the leading causes of death and disability in the world. As such, novel strategies are required to protect the heart against the detrimental effects of acute ischemia/reperfusion injury (IRI), in order to reduce myocardial infarct (MI) size and prevent the onset of HF. The endogenous cardioprotective strategy of remote ischemic conditioning (RIC), in which cycles of brief ischemia and reperfusion are applied to a tissue or organ away from the heart, has been reported in experimental studies to reduce MI size in animal models of acute IRI. In the clinical setting, RIC can be induced by simply inflating and deflating a cuff placed on the upper arm or thigh to induce brief cycles of ischemia and reperfusion, a strategy which has been shown to reduce MI size in ST-segment elevation myocardial infarction (STEMI) patients undergoing primary percutaneous coronary intervention (PPCI). The results of the ongoing CONDI2/ERIC-PPCI trial are eagerly awaited, and will provide definitive answers with regards to the cardioprotective effect and clinical outcome benefits of RIC in STEMI.
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Affiliation(s)
- Jun Chong
- Barts Heart Centre, St Bartholomew’s Hospital, London, United Kingdom
| | - Heerajnarain Bulluck
- Hatter Cardiovascular Institute, London, United Kingdom
- Norfolk and Norwich University Hospital, Norwich, UK
| | - En Ping Yap
- National Heart Research Institute Singapore, National Heart Centre Singapore, Singapore
| | - Andrew FW Ho
- Department of Emergency Medicine, Singapore General Hospital
- Cardiovascular and Metabolic Disorders Program, Duke-National University of Singapore, Singapore
| | - William A. Boisvert
- Center for Cardiovascular Research, John A. Burns School of Medicine, University of Hawaii, USA
| | - Derek J Hausenloy
- Barts Heart Centre, St Bartholomew’s Hospital, London, United Kingdom
- Hatter Cardiovascular Institute, London, United Kingdom
- National Heart Research Institute Singapore, National Heart Centre Singapore, Singapore
- Cardiovascular and Metabolic Disorders Program, Duke-National University of Singapore, Singapore
- The National Institute of Health Research University College London Hospitals Biomedical Research Centre, London, United Kingdom
- Yong Loo Lin School of Medicine, National University Singapore, Singapore
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Chong J, Cohen M, Waubant E. Multiple sclerosis onset after granulocyte macrophage colony-stimulating factor withdrawal. Mult Scler Relat Disord 2018; 20:178-180. [PMID: 29414294 DOI: 10.1016/j.msard.2018.01.025] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [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: 10/06/2017] [Revised: 11/29/2017] [Accepted: 01/25/2018] [Indexed: 12/21/2022]
Abstract
A 51-year old woman with stage III melanoma participated in a phase II clinical trial in which she received subcutaneous rhGM-CSF injections for 3 years. She was in remission by the end of the trial. Seven months after discontinuing GM-CSF she had her first MS event. The unique timeline of rh-GM-CSF injections in a melanoma trial, during which yearly MRI scans showed subtle stable demyelination followed by RRMS onset shortly after discontinuation of treatment, may provide some insight on the role of GM-CSF in MS.
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Affiliation(s)
- J Chong
- UCSF Multiple Sclerosis Center, 675 Nelson Rising Lane, San Francisco, CA 94158, USA
| | - M Cohen
- Palo Alto Medical Foundation, 1501 Trousdale Drive, Burlingame, CA 94010, USA
| | - E Waubant
- UCSF Multiple Sclerosis Center, 675 Nelson Rising Lane, San Francisco, CA 94158, USA.
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Stempien E, Goddard ML, Leva Y, Bénard-Gellon M, Laloue H, Farine S, Kieffer-Mazet F, Tarnus C, Bertsch C, Chong J. Secreted proteins produced by fungi associated with Botryosphaeria dieback trigger distinct defense responses in Vitis vinifera and Vitis rupestris cells. Protoplasma 2018; 255:613-628. [PMID: 29043572 DOI: 10.1007/s00709-017-1175-z] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/01/2017] [Accepted: 10/09/2017] [Indexed: 05/07/2023]
Abstract
Grapevine trunk diseases (Eutypa dieback, esca and Botryosphaeria dieback) are caused by a complex of xylem-inhabiting fungi, which severely reduce yields in vineyards. Botryosphaeria dieback is associated with Botryosphaeriaceae. In order to develop effective strategies against Botryosphaeria dieback, we investigated the molecular basis of grapevine interactions with a virulent species, Neofusicoccum parvum, and a weak pathogen, Diplodia seriata. We investigated defenses induced by purified secreted fungal proteins within suspension cells of Vitis (Vitis rupestris and Vitis vinifera cv. Gewurztraminer) with putative different susceptibility to Botryosphaeria dieback. Our results show that Vitis cells are able to detect secreted proteins produced by Botryosphaeriaceae, resulting in a rapid alkalinization of the extracellular medium and the production of reactive oxygen species. Concerning early defense responses, N. parvum proteins induced a more intense response compared to D. seriata. Early and late defense responses, i.e., extracellular medium alkalinization, cell death, and expression of PR defense genes were stronger in V. rupestris compared to V. vinifera, except for stilbene production. Secreted Botryosphaeriaceae proteins triggered a high accumulation of δ-viniferin in V. vinifera suspension cells. Artificial inoculation assays on detached canes with N. parvum and D. seriata showed that the development of necrosis is reduced in V. rupestris compared to V. vinifera cv. Gewurztraminer. This may be related to a more efficient induction of defense responses in V. rupestris, although not sufficient to completely inhibit fungal colonization. Overall, our work shows a specific signature of defense responses depending on the grapevine genotype and the fungal species.
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Affiliation(s)
- E Stempien
- Laboratoire Vigne Biotechnologie et Environnement LVBE EA 3991, Université de Haute-Alsace, 33 rue de Herrlisheim, BP 68008, Colmar Cedex, France
| | - M-L Goddard
- Laboratoire Vigne Biotechnologie et Environnement LVBE EA 3991, Université de Haute-Alsace, 33 rue de Herrlisheim, BP 68008, Colmar Cedex, France
- Laboratoire de Chimie Organique et Bio-organique COB EA 4566, Université de Haute-Alsace, 3bis rue Alfred Werner, BP 68093, Mulhouse Cedex, France
| | - Y Leva
- Laboratoire Vigne Biotechnologie et Environnement LVBE EA 3991, Université de Haute-Alsace, 33 rue de Herrlisheim, BP 68008, Colmar Cedex, France
| | - M Bénard-Gellon
- Laboratoire Vigne Biotechnologie et Environnement LVBE EA 3991, Université de Haute-Alsace, 33 rue de Herrlisheim, BP 68008, Colmar Cedex, France
| | - H Laloue
- Laboratoire Vigne Biotechnologie et Environnement LVBE EA 3991, Université de Haute-Alsace, 33 rue de Herrlisheim, BP 68008, Colmar Cedex, France
| | - S Farine
- Laboratoire Vigne Biotechnologie et Environnement LVBE EA 3991, Université de Haute-Alsace, 33 rue de Herrlisheim, BP 68008, Colmar Cedex, France
| | - F Kieffer-Mazet
- Laboratoire Vigne Biotechnologie et Environnement LVBE EA 3991, Université de Haute-Alsace, 33 rue de Herrlisheim, BP 68008, Colmar Cedex, France
| | - C Tarnus
- Laboratoire de Chimie Organique et Bio-organique COB EA 4566, Université de Haute-Alsace, 3bis rue Alfred Werner, BP 68093, Mulhouse Cedex, France
| | - C Bertsch
- Laboratoire Vigne Biotechnologie et Environnement LVBE EA 3991, Université de Haute-Alsace, 33 rue de Herrlisheim, BP 68008, Colmar Cedex, France
| | - J Chong
- Laboratoire Vigne Biotechnologie et Environnement LVBE EA 3991, Université de Haute-Alsace, 33 rue de Herrlisheim, BP 68008, Colmar Cedex, France.
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Qian P, Barry M, Lu J, Al-Raisi S, Mina A, Ryan J, Bandodkar S, Alvarez S, James V, Ronquillo J, Varikatt W, Clayton Z, Chong J, Kovoor P, Pouliopoulos J, McEwan A, Thiagalingam A, Thomas S. Development and Validation of a Novel Microwave Transcatheter Renal Denervation System and an Intraprocedural Physiological End Point for Renal Sympathetic Denervation. Heart Lung Circ 2018. [DOI: 10.1016/j.hlc.2018.06.006] [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] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Dhillon A, Anderson P, Holmes-Walker J, Deshmukh T, Chong J. 24-Hour Holter Monitor Assessment of Heart Rate Variability Across the Spectrum of Diabetes. Heart Lung Circ 2018. [DOI: 10.1016/j.hlc.2018.06.551] [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] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Chong J, Ellenberger K, Pathan F. Relationship Between Obesity and Echocardiographic Image Quality: A Case for Contrast. Heart Lung Circ 2018. [DOI: 10.1016/j.hlc.2018.06.504] [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] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Emmerig D, Emerson P, Patel V, Kurup R, Pickett H, Deshmukh T, Chong J. Peripheral Blood Mononuclear Cell Telomere Length After ST-Elevation Myocardial Infarction. Heart Lung Circ 2018. [DOI: 10.1016/j.hlc.2018.06.652] [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] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Clayton Z, Shi H, Santos M, Michael P, Farraha M, Igoor S, Kizana E, Wise S, Chong J. Establishing Safety and Efficacy of a Human Platelet-Derived Growth Factor-AB-Conjugated Plasma Polymerised Nanocarrier for Cardiac Regeneration. Heart Lung Circ 2018. [DOI: 10.1016/j.hlc.2018.06.123] [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] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Chong J, Joseph A, Hill L, Fitzpatrick M. Factors Affecting 28-Day Readmissions in Patients Admitted for the First Time with Heart Failure with Reduced Ejection Fraction–Nepean Hospital's Experience from May to December 2016. Heart Lung Circ 2017. [DOI: 10.1016/j.hlc.2017.06.206] [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] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Chong J, Thomas S, Chandrala P, Lee C. Case Series of Western Sydney's Experience with the Use of Mexiletine 150 mg Twice Daily as an Antiarrhythmic Drug in Ischaemic Cardiomyopathy Patients with Automated Implantable Cardioverter Defibrillators In-situ that Have Recurrent Ventricular Arrhythmias Refractory to Standard Treatment. Heart Lung Circ 2017. [DOI: 10.1016/j.hlc.2017.06.266] [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] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Le L, Pickett H, Ho J, Thavapalachandran S, Farraha M, Yang A, Yang S, dos Remedios C, Kizana E, Chong J. Telomerase Reverse Transcriptase Over-Expression Enhances Human Cardiac Progenitor Cell Cardiac Regeneration after Myocardial Infarction. Heart Lung Circ 2017. [DOI: 10.1016/j.hlc.2017.06.004] [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] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Thavapalachandran S, Le T, Kizana E, Chong J. Pluripotent Stem Cell-Derived Mesenchymal Stem Cells Improve Cardiac Function and Reduce Scar Size Post MI. Heart Lung Circ 2017. [DOI: 10.1016/j.hlc.2017.06.226] [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] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Chong J, Ng B, Fitzpatrick M. Comparison of Pulmonary Capillary Wedge Pressure Measured on Right Heart Catheterisation and Pulmonary Capillary Wedge Pressure Calculated from Nagueh's Formula in Patients with Pulmonary Hypertension. Heart Lung Circ 2017. [DOI: 10.1016/j.hlc.2017.06.480] [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] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Tang D, Malone D, Warholak T, Chong J, Armstrong E, Slack M, Hsu CH, Labiner D. Healthcare resource burden of newly diagnosed epilepsy in the US low-income elderly population. Eur Geriatr Med 2015. [DOI: 10.1016/j.eurger.2015.02.015] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Chong J, An W, Hung L, Cheung R. Cyclists with patellofemoral pain do not demonstrate altered hip and knee kinematics. Physiotherapy 2015. [DOI: 10.1016/j.physio.2015.03.415] [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] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Affiliation(s)
- M Bilal
- Allegheny General Hospital, Internal Medicine, Pittsburgh, Pennsylvania, USA
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Bénard-Gellon M, Farine S, Goddard ML, Schmitt M, Stempien E, Pensec F, Laloue H, Mazet-Kieffer F, Fontaine F, Larignon P, Chong J, Tarnus C, Bertsch C. Toxicity of extracellular proteins from Diplodia seriata and Neofusicoccum parvum involved in grapevine Botryosphaeria dieback. Protoplasma 2015; 252:679-87. [PMID: 25323623 DOI: 10.1007/s00709-014-0716-y] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/12/2014] [Accepted: 10/03/2014] [Indexed: 05/16/2023]
Abstract
Botryosphaeria dieback, esca and Eutypa dieback are three economic major grapevine trunk diseases that cause severe yield reduction in vineyards worldwide. The frequency of disease symptoms has increased considerably over the past decade, and no efficient treatment is currently available to control these diseases. The different fungi associated with grapevine trunk diseases mainly induce necrotic wood and characteristic foliar symptoms. In this context, fungi virulence factors and host invasion are not well understood. We hypothesise that extracellular proteins produced by Diplodia seriata and Neofusicoccum parvum, two causal agents associated with Botryosphaeria dieback, are virulence factors responsible for the pathogenicity. In our previous work, we demonstrated that the total extracellular compounds produced by N. parvum induced more necrosis on Chardonnay calli and triggered a different defence gene expression pattern than those produced by D. seriata. Furthermore, this aggressiveness was not clearly correlated with the production of mellein, a characteristic phytotoxin of Botryosphaeriaceae, in our in vitro calli model. To characterise other potential virulence factors and to understand the mechanisms of host invasion by the fungus, we evaluated the profile, quantity and the impact of extracellular proteins produced by these fungi on Vitis vinifera calli necrosis and defence gene expression. Our results reveal that, under the same conditions, N. parvum produces more extracellular proteins and in higher concentrations than D. seriata. With Vitis vinifera cv. Chardonnay cells, we showed that equivalent concentrations of proteins secreted by N. parvum were more aggressive than those of D. seriata in producing necrosis and that they clearly induced more grapevine defence genes.
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Affiliation(s)
- M Bénard-Gellon
- Laboratoire Vigne Biotechnologie et Environnement EA 3991, Université de Haute-Alsace, 33, rue de Herrlisheim, BP 68008, Colmar Cedex, France,
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Chong HT, Ramli N, Lee KH, Kim BJ, Ursekar M, Dayananda K, Singhal BS, Chong J, Chan LL, Seetoh YY, Chawalparit O, Prayoonwiwat N, Chang EC, Tsai CP, Tang KW, Li PCK, Tan CT. Magnetic Resonance Imaging of Asians with Multiple Sclerosis was Similar to that of the West. Can J Neurol Sci 2014; 33:95-100. [PMID: 16583730 DOI: 10.1017/s0317167100004777] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
Magnetic resonance imaging (MRI) of the brain is the most important paraclinical diagnostic test in multiple sclerosis (MS). The appearance of MRI in Asians with MS is not well defined. We retrospectively surveyed the first brain and spinal cord MRI in patients diagnosed to have MS, according to Poser's criteria in seven regions throughout Asia to define the MRI changes among Asians with MS. There were 101 patients with first brain, and 86 with first spinal cord MRI, 66 of whom had both. The brain MRI showed a mean of 17 lesions per patient in T2 weighted images, mostly asymptomatic. Almost all the lesions were in the white matter, particularly in the juxtacortical, deep and periventricular white matter. A third of the lesions were greater than 5 mm, 14% enhanced with gadolinium. There were more supratentorial than infratentorial lesions at a ratio of 7.5: 1. Ninety five percent of the spinal cord lesions were in cervical and thoracic regions, 34% enhanced with gadolinium. The lesions extended over a mean of 3.6 +/- 3.3 vertebral bodies in length. Fifty (50%) of the brain and 54 (63%) of the spinal MRI patients had the optic-spinal form of MS. The MRI of the optic-spinal and classical groups of patients were similar in appearance and distribution, except that the optic-spinal MS patients have fewer brain but longer and more severe spinal cord lesions. In conclusion, the brain and spinal cord MRI of Asian patients with MS was similar to that of the West, although, in this study, Asian MS patients had larger spinal cord lesions.
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Affiliation(s)
- H T Chong
- University of Malaya, Sungkyunkwan University School of Medicine, Seoul, Korea
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Ramírez-Suero M, Bénard-Gellon M, Chong J, Laloue H, Stempien E, Abou-Mansour E, Fontaine F, Larignon P, Mazet-Kieffer F, Farine S, Bertsch C. Extracellular compounds produced by fungi associated with Botryosphaeria dieback induce differential defence gene expression patterns and necrosis in Vitis vinifera cv. Chardonnay cells. Protoplasma 2014; 251:1417-26. [PMID: 24752796 DOI: 10.1007/s00709-014-0643-y] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/28/2014] [Accepted: 04/02/2014] [Indexed: 05/04/2023]
Abstract
Three major grapevine trunk diseases, esca, botryosphaeria dieback and eutypa dieback, pose important economic problems for vineyards worldwide, and currently, no efficient treatment is available to control these diseases. The different fungi associated with grapevine trunk diseases can be isolated in the necrotic wood, but not in the symptomatic leaves. Other factors seem to be responsible for the foliar symptoms and may represent the link between wood and foliar symptoms. One hypothesis is that the extracellular compounds produced by the fungi associated with grapevine trunk diseases are responsible for pathogenicity.In the present work, we used Vitis vinifera cv. Chardonnay cells to test the aggressiveness of total extracellular compounds produced by Diplodia seriata and Neofusicoccum parvum, two causal agents associated with botryosphaeria dieback. Additionally, the toxicity of purified mellein, a characteristic toxin present in the extracellular compounds of Botryosphaeriaceae, was assessed.Our results show that the total extracellular compounds produced by N. parvum induce more necrosis on Chardonnay calli and induce a different defence gene expression pattern than those of D. seriata. Mellein was produced by both fungi in amounts proportional to its aggressiveness. However, when purified mellein was added to the culture medium of calli, only a delayed necrosis and a lower-level expression of defence genes were observed. Extracellular compounds seem to be involved in the pathogenicity of the fungi associated with botryosphaeria dieback. However, the doses of mellein used in this study are 100 times higher than those found in the liquid fungal cultures: therefore, the possible function of this toxin is discussed.
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Affiliation(s)
- M Ramírez-Suero
- Laboratoire Vigne Biotechnologie et Environnement EA 3991, Université de Haute-Alsace, 33, rue de Herrlisheim, BP 68008, Colmar Cedex, France
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Zavala K, Lee J, Chong J, Sharma M, Eilers H, Schumacher MA. The anticancer antibiotic mithramycin-A inhibits TRPV1 expression in dorsal root ganglion neurons. Neurosci Lett 2014; 578:211-6. [PMID: 24468003 DOI: 10.1016/j.neulet.2014.01.021] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [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: 12/19/2013] [Revised: 01/13/2014] [Accepted: 01/14/2014] [Indexed: 12/17/2022]
Abstract
Activation of peripheral nociceptors by products of inflammation has been shown to be dependent on specific sensory transducing elements such as the capsaicin receptor, TRPV1. The development of high-affinity antagonists to TRPV1 as well as to other receptors capable of detecting noxious stimuli has now become a major focus in analgesic development. Another critical feature of nociception is the relative abundance of a particular pain transducing receptor under normal or pathophysiologic conditions. Increases in expression and/or changes in distribution of nociceptive receptors such as TRPV1 have been correlated with progression of tissue injury and persistence of pain behaviors. Although some details are emerging as to what regulates nociceptor-specific gene expression, compounds that could potentially be used to block or reverse over-expression of nociceptive gene expression are essentially absent. In our efforts to better understand the transcriptional regulation of TRPV1 in sensory neurons, we identified an anticancer agent, mithramycin-A, that decreased TRPV1 expression in primary rat dorsal root ganglion (DRG) neurons. Mithramycin-A dose-dependently (10-50 nM) decreased endogenous TRPV1 mRNA content and appeared to decrease TRPV1-like protein expression in DRG neurons. We also observed that mithramycin-A directed a decrease in the number of capsaicin-responsive DRG neurons without a significant change in the capsaicin-response magnitudes. Interestingly, mithramycin-A also reduced the mRNA encoding Sp1 and Sp4 in DRG neurons, transcription factors previously found to positively regulate TRPV1 expression in sensory neurons. Taken together, we propose that mithramycin-A directs an inhibitory effect on a subpopulation of capsaicin-responsive DRG neurons that utilize Sp1-like factors for TRPV1 expression. Given the therapeutic correlate of mithramycin-A effectiveness in the treatment of certain cancers, small molecule transcriptional inhibitors such as mithramycin-A may serve as useful tools of discovery in pain transduction and possibly future analgesic development.
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Affiliation(s)
- K Zavala
- Department of Anesthesia and Perioperative Care, Division of Pain Medicine, University of California, San Francisco 94143-0427, United States
| | - J Lee
- Department of Anesthesia and Perioperative Care, Division of Pain Medicine, University of California, San Francisco 94143-0427, United States
| | - J Chong
- Department of Anesthesia and Perioperative Care, Division of Pain Medicine, University of California, San Francisco 94143-0427, United States
| | - M Sharma
- Department of Anesthesia and Perioperative Care, Division of Pain Medicine, University of California, San Francisco 94143-0427, United States
| | - H Eilers
- Department of Anesthesia and Perioperative Care, Division of Pain Medicine, University of California, San Francisco 94143-0427, United States
| | - M A Schumacher
- Department of Anesthesia and Perioperative Care, Division of Pain Medicine, University of California, San Francisco 94143-0427, United States.
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Fifi JT, Brockington C, Narang J, Leesch W, Ewing SL, Bennet H, Berenstein A, Chong J. Clopidogrel resistance is associated with thromboembolic complications in patients undergoing neurovascular stenting. AJNR Am J Neuroradiol 2013; 34:716-20. [PMID: 23194833 PMCID: PMC7964502 DOI: 10.3174/ajnr.a3405] [Citation(s) in RCA: 104] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2012] [Accepted: 09/17/2012] [Indexed: 12/28/2022]
Abstract
BACKGROUND AND PURPOSE Antiplatelet drug resistance has been associated with thromboembolic complications in patients after coronary stent placement. It has not been well-studied in patients who have neurovascular stent-placement procedures. This study aimed to analyze the relationship between antiplatelet drug resistance and neurovascular stent-placement complications. MATERIALS AND METHODS A prospective data base of all patients treated at our institution was used to identify patients with neurovascular stent-placement procedures. During a 4.5-year period, all patients undergoing neurovascular stent placement were evaluated for aspirin and clopidogrel resistance by using the VerifyNow assay. During an observational phase, all patients received 75 mg of clopidogrel and aspirin (group A). During the intervention phase (group B), patients were given additional clopidogrel on the basis of the clopidogrel resistance assay. We assessed the development of thromboembolic complications within 30 days of the procedure in patients who were resistant-versus-nonresistant to clopidogrel. RESULTS Of 96 patients who had neurovascular stent placement, 5.2% were resistant to aspirin and 36.5% were resistant to clopidogrel. Periprocedural thromboembolic complications were seen in 7 patients (7.3%). In a multivariate logistic regression model, clopidogrel resistance, higher diastolic blood pressure, and lack of statin use were significantly associated with periprocedural thromboembolic complication. There was a nonsignificant decrease in thromboembolic complications in patients whose clopidogrel dosage was tailored to the assay. CONCLUSIONS In our series, clopidogrel resistance was associated with increased periprocedural thromboembolic complications from neurovascular stent-placement procedures. Targeting the clopidogrel dose to platelet inhibition assays may improve clinical outcomes and requires further study.
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Affiliation(s)
- J T Fifi
- Center for Endovascular Surgery, Hyman Newman Institute for Neurology and Neurosurgery, Department of Neurology, St. Luke's Roosevelt Hospital Center, New York, NY 10019, USA.
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Chong J, Howes NK, Brown PD, Harder DE. Identification of the stem rust resistance gene Pg9 and its association with crown rust resistance and endosperm proteins in 'Dumont' oat. Genome 2012; 37:440-7. [PMID: 18470089 DOI: 10.1139/g94-062] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The Canadian oat cultivar 'Dumont' is known to have genes Pc38 and Pc39 for crown rust resistance and genes Pg2 and Pg13 for stem rust resistance. When crossed to a susceptible oat line OT328, 'Dumont' was shown to have an additional dominant gene for crown rust resistance, designated PcX. Tests of segregating progeny indicated that the stem rust resistance gene Pg9 is present and is tightly linked in coupling to PcX. The presence of Pg9 in 'Dumont' was confirmed in crosses involving the cultivar 'Ukraine', which has Pg9 and a crown rust resistance gene tightly linked to it. The association of rust resistance with endosperm proteins in 'Dumont' was investigated. The linkage of gene Pg13 with a 56.6-kDa polypeptide locus (map distance of 10.47 +/- 2.70 cM) was demonstrated using sodium dodecylsulfate - polyacrylamide gel electrophoresis (SDS-PAGE). A 27.9-kDa polypeptide was shown to be associated with the linked PcX/Pg9 loci by SDS-PAGE but appeared to be more reliably separated as an avenin band, designated B4, using acid-PAGE. Another avenin band, designated B2, also was shown to be associated with the PcX/Pg9 loci using acid-PAGE. The loci conditioning the B2 and B4 bands appeared to be tightly linked or allelic and are separated from the linked PcX/Pg9 loci by a map distance of 1.03 +/- 0.36 cM. The association of Pg13 with a 56.6-kDa polypeptide and the tight linkage between PcX/Pg9 and the B2 (in coupling) and B4 (in repulsion) avenin loci offer a useful tool to breeders to detect the presence of these genes in oat breeding.
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McCartney CA, Stonehouse RG, Rossnagel BG, Eckstein PE, Scoles GJ, Zatorski T, Beattie AD, Chong J. Mapping of the oat crown rust resistance gene Pc91. Theor Appl Genet 2011; 122:317-25. [PMID: 20862449 DOI: 10.1007/s00122-010-1448-9] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/15/2010] [Accepted: 08/30/2010] [Indexed: 05/20/2023]
Abstract
Crown rust is an important disease of oat caused by Puccinia coronata Corda f. sp. avenae Eriks. Crown rust is efficiently and effectively managed through the development of resistant oat varieties. Pc91 is a seedling crown rust resistance gene that is highly effective against the current P. coronata population in North America. The primary objective of this study was to develop DNA markers linked to Pc91 for purposes of marker-assisted selection in oat breeding programs. The Pc91 locus was mapped using a population of F7-derived recombinant inbred lines developed from the cross 'CDC Sol-Fi'/'HiFi' made at the Crop Development Centre, University of Saskatchewan. The population was evaluated for reaction to P. coronata in field nurseries in 2008 and 2009. Pc91 mapped to a linkage group consisting of 44 Diversity Array Technology (DArT) markers. DArTs were successfully converted to sequence characterized amplified region (SCAR) markers. Five robust SCARs were developed from three non-redundant DArTs that co-segregated with Pc91. SCAR markers were developed for different assay systems, such that SCARs are available for agarose gel electrophoresis, capillary electrophoresis, and Taqman single nucleotide polymorphism detection. The SCAR markers accurately postulated the Pc91 status of 23 North American oat breeding lines.
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Affiliation(s)
- C A McCartney
- Crop Development Centre, University of Saskatchewan, 51 Campus Drive, Saskatoon, SK, S7N 5A8, Canada.
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Qin LH, Zhao YM, Bao YH, Bai WL, Chong J, Zhang GL, Zhang JB, Zhao ZH. Polymorphism of the prion protein gene (PRNP) in two Chinese indigenous cattle breeds. Mol Biol Rep 2010; 38:4197-204. [PMID: 21120616 DOI: 10.1007/s11033-010-0541-0] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2010] [Accepted: 11/16/2010] [Indexed: 10/18/2022]
Abstract
Prion protein (PRNP) gene has been located at position q17 of chromosome 13 in cattle. The polymorphisms of PRNP gene might be associated with BSE susceptibility. In the present work, we investigated the polymorphisms of PRNP gene, including SNP in exon 3, 23-bp indel in promoter region, 12-bp indel in intron 1 in 2 Chinese indigenous cattle breeds of northeast China. Eighty-six animals from Yanbian (34) and Chinese Red Steppes (52) were genotyped at PRNP locus by analyzing genomic DNA. A total of 4 single nucleotide polymorphism (SNP) sites were revealed in the PRNP gene exon 3 of the 2 cattle breeds investigated. Three of these SNPs were non-synonymous mutations that resulted in the amino acid exchanges (K119N, S154N, and M177V), and one is silent nucleotide substitutions (A234G). The two amino acid mutations of S154N and M177V were detected only in Yanbian with a very low frequency (0.0147), and they appears to be absent in Chinese Red Steppes. The average gene heterozygosity (He), effective allele numbers (Ne), Shannon's information index (I) and polymorphism information content (PIC) were 0.3088, 1.5013, 0.3814 and 0.2000 in Yanbian, respectively, being relatively higher than that of Chinese Red Steppes (0.2885, 1.4985, 0.3462 and 0.1873, respectively). In 23-bp indel and 12-bp indel loci, three different genotypes were identified in both Yanbian and Chinese Red Steppes breeds. Based 23- and 12-bp indels, four haplotypes was constructed in the 2 Chinese cattle breeds, of which the 23-bp (-)/12-bp (-) was main haplotypes accounting for more than 50% of the total in both Yanbian and Chinese Red Steppes breeds. These results might be useful in understanding the genetic characteristics of PRNP gene in Chinese indigenous cattle breeds.
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Affiliation(s)
- L H Qin
- College of Animal Science and Veterinary Medicine, Jilin University, Changchun, 130062, China
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Abstract
BACKGROUND The prevalence of airway inflammatory disorders keeps rising; its pathogenic mechanism is still not fully understood. OBJECTIVE The present study aimed to investigate the role of muscarinic receptor (M receptor) in regulating the immune cell activity in nasal mucosa by using surgical removed nasal mucosa from patients with nasal polyposis (NP) as a study platform. METHODS Human nasal mucosal sample was collected from inferior turbinectomy of 86 patients with NP or/and allergic rhinitis. Expression of tumor necrosis factor alpha (TNF-alpha), M receptor, OX40 ligand was measured in nasal mucosa by enzyme-linked immunosorbent assay, flow cytometry, and Western blotting assay. RESULTS When compared with non-NP (nNP) nasal mucosa, contents of TNF-alpha and TNF-alpha+ cells markedly increased in NP nasal mucosa; immune staining colocalized M3 receptor+ and TNF-alpha+ cells in NP nasal mucosa; exposure of isolated CD4+ T cells to methacholine induced the release of TNF-alpha. We also found CD11c+/M3 receptor+ cells in NP nasal mucosa. Methacholine increased the expression of OX40L in dendritic cells. Staphylococcal (S) aureus and S. enterotoxin B (SEB) were detected in NP nasal mucosa. Exposure of dendritic cells or naïve CD4+ T cells to SEB initiated the expression of M3 receptor at mRNA and protein levels. CONCLUSIONS The present data demonstrate that parasympathetic activity has the capacity to activate dendritic cells to release OX40 ligand, the latter induces CD4+ T cells to produce IL-4 and TNF-alpha that may further contribute to the pathogenesis of NP.
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Affiliation(s)
- T Liu
- Department of Otolaryngology, Head & Neck Surgery, the First Hospital, Shanxi Medical University, Taiyuan, Shanxi, China
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