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Diestro JDB, Fahed R, Omar AT, Hawkes C, Hendriks EJ, Enriquez C, Eesa M, Stotts G, Lee H, Nagendra S, Poppe A, Ducroux C, Lim T, Narvacan K, Rizzuto M, Alfalahi A, Nishi H, Sarma P, Itsekson Hayosh Z, Ignacio K, Boisseau W, Pimenta Ribeiro Pontes Almeida E, Benomar A, Almekhlafi MA, Milot G, Deshmukh A, Kishore K, Tampieri D, Wang J, Srivastava A, Roy D, Carpani F, Kashani N, Candale-Radu C, Singh N, Bres Bullrich M, Sarmiento R, Muir RT, Parra-Fariñas C, Reiter S, Deschaintre Y, Singh RJ, Bodani V, Katsanos A, Agid R, Zafar A, Pereira VM, Spears J, Marotta TR, Djiadeu P, Sharma S, Farrokhyar F. Clinical uncertainty in large vessel occlusion ischemic stroke: does automated perfusion imaging make a difference? An intra-rater and inter-rater agreement study. J Neurointerv Surg 2024:jnis-2023-021429. [PMID: 38453461 DOI: 10.1136/jnis-2023-021429] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2023] [Accepted: 02/18/2024] [Indexed: 03/09/2024]
Abstract
BACKGROUND Limited research exists regarding the impact of neuroimaging on endovascular thrombectomy (EVT) decisions for late-window cases of large vessel occlusion (LVO) stroke. OBJECTIVE T0 assess whether perfusion CT imaging: (1) alters the proportion of recommendations for EVT, and (2) enhances the reliability of EVT decision-making compared with non-contrast CT and CT angiography. METHODS We conducted a survey using 30 patients drawn from an institutional database of 3144 acute stroke cases. These were presented to 29 Canadian physicians with and without perfusion imaging. We used non-overlapping 95% confidence intervals and difference in agreement classification as criteria to suggest a difference between the Gwet AC1 statistics (κG). RESULTS The percentage of EVT recommendations differed by 1.1% with or without perfusion imaging. Individual decisions changed in 21.4% of cases (11.3% against EVT and 10.1% in favor). Inter-rater agreement (κG) among the 29 raters was similar between non-perfusion and perfusion CT neuroimaging (κG=0.487; 95% CI 0.327 to 0.647 and κG=0.552; 95% CI 0.430 to 0.675). The 95% CIs overlapped with moderate agreement in both. Intra-rater agreement exhibited overlapping 95% CIs for all 28 raters. κG was either substantial or excellent (0.81-1) for 71.4% (20/28) of raters in both groups. CONCLUSIONS Despite the minimal difference in overall EVT recommendations with either neuroimaging protocol one in five decisions changed with perfusion imaging. Regarding agreement we found that the use of automated CT perfusion images does not significantly impact the reliability of EVT decisions for patients with late-window LVO.
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Affiliation(s)
- Jose Danilo Bengzon Diestro
- Department of Health Research Methods, Evidence, and Impact, McMaster University, Hamilton, Ontario, Canada
- Divison of Neurology, Department of Medicine, St. Michael's Hospital- Unity Health Toronto, University of Toronto, Toronto, Ontario, Canada
- Li Ka Shing Knowledge Insitute, St. Michael's Hospital- Unity Health Toronto, Toronto, Ontario, Canada
- Division of Diagnostic and Therapeutic Neuroradiology, Department of Medical Imaging, St. Michael's Hospital- Unity Health Toronto, University of Toronto, Toronto, Ontario, Canada
| | - Robert Fahed
- Division Neurology, Department of Medicine, The Ottawa Hospital - Ottawa Hospital Research Institute, University of Ottawa, Ottawa, Ontario, Canada
| | - Abdelsimar Tan Omar
- Division of Neurosurgery, Department of Surgery, McMaster University, Hamilton, Ontario, Canada
| | - Christine Hawkes
- Division of Neurology, Department of Medicine, Sunnybrook Health Sciences Centre, University of Toronto, Toronto, Ontario, Canada
| | - Eef J Hendriks
- Division of Interventional Neuroradiology, Joint Department of Medical Imaging (JDMI), Toronto Western Hospital, University Health Network, University of Toronto, Toronto, Ontario, Canada
| | - Clare Enriquez
- Division of Neurology, Department of Medicine, Sunnybrook Health Sciences Centre, University of Toronto, Toronto, Ontario, Canada
| | - Muneer Eesa
- Department of Radiology, University of Calgary, Calgary, Alberta, Canada
| | - Grant Stotts
- Division Neurology, Department of Medicine, The Ottawa Hospital - Ottawa Hospital Research Institute, University of Ottawa, Ottawa, Ontario, Canada
| | - Hubert Lee
- Division of Neurointerventional Neuroradiology, Division of Neurosurgery, Trillium Health Partners, Mississauga, Ontario, Canada
| | - Shashank Nagendra
- Department of Clinical Neurosciences, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Alexandre Poppe
- Department of Neurosciences, Faculté de Médecine, Université de Montréal, Montréal, Quebec, Canada
| | - Célina Ducroux
- Division Neurology, Department of Medicine, The Ottawa Hospital - Ottawa Hospital Research Institute, University of Ottawa, Ottawa, Ontario, Canada
| | - Timothy Lim
- Division of Diagnostic Neuroradiology, Department of Medical Imaging, Unity Health- St Michael's Hospital, University of Toronto, Toronto, Ontario, Canada
| | - Karl Narvacan
- Department of Medical Imaging, St Michael's Hospital- Unity Health Toronto, University of Toronto, Toronto, Ontario, Canada
| | - Michael Rizzuto
- Division of Neurosurgery, Department of Surgery, Vancouver General Hospital, University of British Columbia, Vancouver, British Columbia, Canada
| | - Afra Alfalahi
- Division of Diagnostic and Therapeutic Neuroradiology, Department of Medical Imaging, St. Michael's Hospital- Unity Health Toronto, University of Toronto, Toronto, Ontario, Canada
| | - Hidehisa Nishi
- Division of Diagnostic and Therapeutic Neuroradiology, Department of Medical Imaging, St. Michael's Hospital- Unity Health Toronto, University of Toronto, Toronto, Ontario, Canada
- Department of Neurosurgery, Koseikai Takeda hospital, Kyoto, Japan
| | - Pragyan Sarma
- Division of Diagnostic and Therapeutic Neuroradiology, Department of Medical Imaging, St. Michael's Hospital- Unity Health Toronto, University of Toronto, Toronto, Ontario, Canada
| | - Ze'ev Itsekson Hayosh
- Division of Diagnostic and Therapeutic Neuroradiology, Department of Medical Imaging, St. Michael's Hospital- Unity Health Toronto, University of Toronto, Toronto, Ontario, Canada
- Division of Interventional Neuroradiology, Joint Department of Medical Imaging (JDMI), Toronto Western Hospital, University Health Network, University of Toronto, Toronto, Ontario, Canada
| | - Katrina Ignacio
- Department of Clinical Neurosciences, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
| | - William Boisseau
- Department of Interventional Neuroradiology, Fondation Rothschild Hospital, Paris, France
| | | | - Anass Benomar
- Department of Radiology, Centre Hospitalier de l'Université de Montréal, Montreal, Québec, Canada
| | - Mohammed A Almekhlafi
- Departments of Clinical Neurosciences, Radiology, and Community Health Sciences, Hotchkiss Brain Institute and O'Brien Institute for Public Health, Cumming School of Medicine at the University of Calgary, Calgary, Alberta, Canada
| | - Genvieve Milot
- Department of Surgery (Neurosurgery), Centre Hospitalier de Quebec, Université Laval, Laval, Quebec, Canada
| | - Aviraj Deshmukh
- Division of Clinical Sciences, Health Sciences North, Northern Ontario School of Medicine University, Sudbury, Ontario, Canada
| | - Kislay Kishore
- Division of Neurosurgery, Department of Surgery, McMaster University, Hamilton, Ontario, Canada
| | - Donatella Tampieri
- Department of Radiology, Kingston Health Sciences Centre, Queen's University, Kingston, Ontario, Canada
| | - Jeffrey Wang
- Divison of Neurology, Department of Medicine, St. Michael's Hospital- Unity Health Toronto, University of Toronto, Toronto, Ontario, Canada
| | - Abhilekh Srivastava
- Division of Neurology, Department of Medicine, Hamilton General Hospital, McMaster University, Hamilton, Ontario, Canada
| | - Daniel Roy
- Département de Radiologie, Radio-Oncologie et Médecine Nucléaire, Université de Montréal, Montréal, Quebec, Canada
| | - Federico Carpani
- Division of Neurology, Department of Medicine, Toronto Western Hospital, University Health Network, University of Toronto, Toronto, Ontario, Canada
| | - Nima Kashani
- Department of Medical Imaging, Royal University Hospital, University of Saskatchewan, Saskatoon, Saskatchewan, Canada
| | - Claudia Candale-Radu
- Division of Neurology, Department of Internal Medicine, Health Sciences Center, University of Manitoba, Winnipeg, Manitoba, Canada
| | - Nishita Singh
- Division of Neurology, Department of Internal Medicine, Health Sciences Center, University of Manitoba, Winnipeg, Manitoba, Canada
| | - Maria Bres Bullrich
- Department of Clinical Neurological Sciences, Schulich School of Medicine and Dentistry, Western University, London, Ontario, Canada
| | - Robert Sarmiento
- Division of Neurology, Department of Medicine, Vancouver General Hospital- University of British Columbia, Vancouver, British Columbia, Canada
| | - Ryan T Muir
- Department of Clinical Neurosciences, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Carmen Parra-Fariñas
- Divisions of Neuroradiology & Neurointervention, Department of Diagnostic & Interventional Radiology, Hospital for Sick Children, University of Toronto, Toronto, Ontario, Canada
| | - Stephanie Reiter
- Division of Neurology, Department of Medicine, Sunnybrook Health Sciences Centre, University of Toronto, Toronto, Ontario, Canada
| | - Yan Deschaintre
- Department of Neurosciences, Faculté de Médecine, Université de Montréal, Montréal, Quebec, Canada
| | - Ravinder-Jeet Singh
- Division of Clinical Sciences, Health Sciences North, Northern Ontario School of Medicine University, Sudbury, Ontario, Canada
| | - Vivek Bodani
- Division of Interventional Neuroradiology, Joint Department of Medical Imaging (JDMI), Toronto Western Hospital, University Health Network, University of Toronto, Toronto, Ontario, Canada
| | - Aristeidis Katsanos
- Division of Neurology, Department of Medicine, Hamilton General Hospital, McMaster University, Hamilton, Ontario, Canada
| | - Ronit Agid
- Division of Interventional Neuroradiology, Joint Department of Medical Imaging (JDMI), Toronto Western Hospital, University Health Network, University of Toronto, Toronto, Ontario, Canada
| | - Atif Zafar
- Divison of Neurology, Department of Medicine, St. Michael's Hospital- Unity Health Toronto, University of Toronto, Toronto, Ontario, Canada
| | - Vitor M Pereira
- Li Ka Shing Knowledge Insitute, St. Michael's Hospital- Unity Health Toronto, Toronto, Ontario, Canada
- Division of Diagnostic and Therapeutic Neuroradiology, Department of Medical Imaging, St. Michael's Hospital- Unity Health Toronto, University of Toronto, Toronto, Ontario, Canada
- Division of Neurosurgery, Department of Surgery, St. Michael's Hospital- Unity Health Toronto, University of Toronto, Toronto, Ontario, Canada
| | - Julian Spears
- Division of Neurosurgery, Department of Surgery, St. Michael's Hospital- Unity Health Toronto, University of Toronto, Toronto, Ontario, Canada
| | - Thomas R Marotta
- Li Ka Shing Knowledge Insitute, St. Michael's Hospital- Unity Health Toronto, Toronto, Ontario, Canada
- Division of Diagnostic and Therapeutic Neuroradiology, Department of Medical Imaging, St. Michael's Hospital- Unity Health Toronto, University of Toronto, Toronto, Ontario, Canada
| | - Pascal Djiadeu
- Department of Health Research Methods, Evidence, and Impact, McMaster University, Hamilton, Ontario, Canada
- Department of Global Health, McMaster University, Hamilton, Ontario, Canada
| | - Sunjay Sharma
- Department of Health Research Methods, Evidence, and Impact, McMaster University, Hamilton, Ontario, Canada
- Division of Neurosurgery, Department of Surgery, McMaster University, Hamilton, Ontario, Canada
| | - Forough Farrokhyar
- Department of Health Research Methods, Evidence, and Impact, McMaster University, Hamilton, Ontario, Canada
- Department of Global Health, McMaster University, Hamilton, Ontario, Canada
- Department of Surgery, McMaster University, Hamilton, Ontario, Canada
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Dantonio P, Tavakoli NP, Migliore B, McCown E, Lim T, Park S, Caggana M, Kucera KS, Phan H, Street N, Petritis K, Vogt RF. Multi-Laboratory Evaluation of Prototype Dried Blood Spot Quality Control Materials for Creatine Kinase-MM Newborn Screening Assays. Int J Neonatal Screen 2023; 9:ijns9010013. [PMID: 36975851 PMCID: PMC10053407 DOI: 10.3390/ijns9010013] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/04/2023] [Revised: 02/17/2023] [Accepted: 02/17/2023] [Indexed: 03/04/2023] Open
Abstract
Pilot studies to detect newborns with Duchenne Muscular Dystrophy (DMD) by newborn bloodspot screening (NBS) have been conducted under the New York State Newborn Screening Program (NYS) and are currently in progress as part of the Early Check Program at Research Triangle Institute (RTI) International. The Newborn Screening Quality Assurance Program (NSQAP) at the U.S. Centers for Disease Control and Prevention (CDC) produced a set of seven prototype dried blood spot (DBS) reference materials spiked with varying levels of creatine kinase MM isoform (CK-MM). These DBS were evaluated over a 3-week period by CDC, NYS, and RTI, all using the same CK-MM isoform-specific fluoroimmunoassay. Results from each laboratory were highly correlated with the relative proportion of CK-MM added to each of the six spiked pools. Based on reference ranges established by NYS and RTI for their pilot studies, these contrived DBS collectively spanned the CK-MM ranges found in typical newborns and the elevated ranges associated with DMD. This set allows quality assessment over the wide range of fluctuating CK-MM levels in typical and DMD-affected newborns.
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Affiliation(s)
- Paul Dantonio
- Newborn Screening and Molecular Biology Branch, Division of Laboratory Sciences, National Center for Environmental Health, Centers for Disease Control and Prevention, Atlanta, GA 30333, USA
| | - Norma P. Tavakoli
- Wadsworth Center, Division of Genetics, New York State Department of Health, Albany, NY 12208, USA
| | - Brooke Migliore
- RTI International, Research Triangle Park, Durham, NC 27709, USA
| | - Elizabeth McCown
- Newborn Screening and Molecular Biology Branch, Division of Laboratory Sciences, National Center for Environmental Health, Centers for Disease Control and Prevention, Atlanta, GA 30333, USA
| | - Timothy Lim
- Newborn Screening and Molecular Biology Branch, Division of Laboratory Sciences, National Center for Environmental Health, Centers for Disease Control and Prevention, Atlanta, GA 30333, USA
| | - Sunju Park
- Wadsworth Center, Division of Genetics, New York State Department of Health, Albany, NY 12208, USA
| | - Michele Caggana
- Wadsworth Center, Division of Genetics, New York State Department of Health, Albany, NY 12208, USA
| | | | - Han Phan
- Department of Pediatrics, Heersink School of Medicine, University of Alabama at Birmingham, Birmingham, AL 35233, USA
- Rare Disease Research, Atlanta, GA 30329, USA
| | - Natalie Street
- Birth Monitoring and Research Branch, Division of Birth Defects and Infant Disorders, National Center on Birth Defects & Developmental Disabilities, Centers for Disease Control and Prevention, Atlanta, GA 30333, USA
| | - Konstantinos Petritis
- Newborn Screening and Molecular Biology Branch, Division of Laboratory Sciences, National Center for Environmental Health, Centers for Disease Control and Prevention, Atlanta, GA 30333, USA
| | - Robert F. Vogt
- Newborn Screening and Molecular Biology Branch, Division of Laboratory Sciences, National Center for Environmental Health, Centers for Disease Control and Prevention, Atlanta, GA 30333, USA
- Correspondence:
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Kilgore M, Platis D, Lim T, Isenberg S, Pickens CA, Cuthbert C, Petritis K. Development of a Universal Second-Tier Newborn Screening LC-MS/MS Method for Amino Acids, Lysophosphatidylcholines, and Organic Acids. Anal Chem 2023; 95:3187-3194. [PMID: 36724346 PMCID: PMC9933048 DOI: 10.1021/acs.analchem.2c03098] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
First-tier MS-based newborn screening by flow injection analysis can have high presumptive positive rates, often due to isomeric/isobaric compounds or poor biomarker specificity. These presumptive positive samples can be analyzed by second-tier screening assays employing separations such as liquid chromatography-mass spectrometry (LC-MS/MS), which increases test specificity and drastically reduces false positive referrals. The ability to screen for multiple disorders in a single multiplexed test simplifies workflows and maximizes public health laboratories' resources. In this study, we developed and validated a highly multiplexed second-tier method for dried blood spots using a hydrophilic interaction liquid chromatography (HILIC) column coupled to an MS/MS system. The LC-MS/MS method was capable of simultaneously detecting second-tier biomarkers for maple syrup urine disease, homocystinuria, methylmalonic acidemia, propionic acidemia, glutaric acidemia type 1, glutaric acidemia type 2, guanidinoacetate methyltransferase deficiency, short-chain acyl-CoA dehydrogenase deficiency, adrenoleukodystrophy, and Pompe disease.
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Affiliation(s)
- Matthew
B. Kilgore
- Newborn
Screening and Molecular Biology Branch, US Centers for Disease Control and Prevention, Atlanta, Georgia 30341, United States
| | - Dimitrios Platis
- Department
of Newborn Screening, Institute of Child
Health, Athens 115 26, Greece
| | - Timothy Lim
- Newborn
Screening and Molecular Biology Branch, US Centers for Disease Control and Prevention, Atlanta, Georgia 30341, United States
| | - Samantha Isenberg
- Newborn
Screening and Molecular Biology Branch, US Centers for Disease Control and Prevention, Atlanta, Georgia 30341, United States
| | - C. Austin Pickens
- Newborn
Screening and Molecular Biology Branch, US Centers for Disease Control and Prevention, Atlanta, Georgia 30341, United States
| | - Carla Cuthbert
- Newborn
Screening and Molecular Biology Branch, US Centers for Disease Control and Prevention, Atlanta, Georgia 30341, United States
| | - Konstantinos Petritis
- Newborn
Screening and Molecular Biology Branch, US Centers for Disease Control and Prevention, Atlanta, Georgia 30341, United States,
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Lim T, Campbell R, Jones D, Mullan A, Lichen I, Knier C, Bellamkonda V. 72 Association of Limited English Proficiency and Increased Emergency Department Waiting Room Lengths of Stay. Ann Emerg Med 2022. [DOI: 10.1016/j.annemergmed.2022.08.095] [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: 11/01/2022]
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Park J, Jee J, Choi W, Lee K, Lim T, Jeon H, Seo J, Yoo J. Tissue Engineering, Embryonic, Organ and Other Tissue Specific Stem Cells: ASSESSMENT OF THE MUCOSAL HEALING EFFECT OF COLON ORGANOID TRANSPLANTATION IN RADIATION COLITIS. Cytotherapy 2022. [DOI: 10.1016/s1465-3249(22)00402-9] [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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Park J, Lim T, Jeon H, Song H, Choi W, Lee K. Tissue Engineering, Embryonic, Organ and Other Tissue Specific Stem Cells: ORGANOID AS A REGENERATIVE MEDICINE TO HEAL ULCERS IN A PORCINE MODEL OF RADIATION PROCTITIS AND CONSIDERATION FOR FIRST IN HUMAN TRIALS. Cytotherapy 2022. [DOI: 10.1016/s1465-3249(22)00405-4] [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: 11/03/2022]
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Song Y, Lim J, Lim T, Im K, Kim N, Nam Y, Jeon Y, Ko H, Park I, Shin J, Cho S. Human mesenchymal stem cells derived from umbilical cord and bone marrow exert immunomodulatory effects in different mechanisms. Cytotherapy 2021. [DOI: 10.1016/s1465324921003455] [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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Ibrahim K, Lim T, Mullee MA, Yao GL, Zhu S, Baxter M, Tilley S, Russel C, Roberts HC. 20 Comparison of Six Frailty Screening Tools in Patients Aged 65+ with An Arm Fragility Fracture. Age Ageing 2021. [DOI: 10.1093/ageing/afab028.20] [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: 11/14/2022] Open
Abstract
Abstract
Introduction
Frailty is associated with an increased risk of falling and fracture, but not routinely assessed in fracture clinic. Early identification and management of frailty among older people with arm fragility fracture could help avoid further falls and fractures, especially of the hip. We evaluated the feasibility of assessing frailty in a busy fracture clinic.
Methods
People aged 65+ years with an arm fracture in one acute trust were recruited. Frailty was assessed in fracture clinics using six tools: Fried Frailty Phenotype (FFP), FRAIL scale, PRISMA-7, electronic Frailty Index (e-FI), Clinical Frailty Score (CFS), and Study of Osteoporotic Fracture (SOF). The sensitivity and specificity of each tool was compared against FFP as a reference. Participants identified as frail by 2+ tools were referred for Comprehensive Geriatric Assessment (CGA).
Results
100 patients (mean age 75 years±7.2; 20 men) were recruited. Frailty prevalence was 9% (FRAIL scale), 13% (SOF), 14% (CFS > 6), 15% (FFP; e-FI > 0.25), and 25% (PRISMA-7). Men were more likely to be frail than women. Data were complete for all assessments and completion time ranged from one minute (PRISMA-7; CFS) to six minutes for the FFP which required most equipment. Comparing with FFP, the most accurate instrument for stratifying frail from non-frail was the PRISMA-7 (sensitivity = 93%, specificity = 87%) while the remaining tools had good specificity (range 93%–100%) but average sensitivity (range 40%–60%). Twenty patients were eligible for CGA. Five had recently had CGA and 11/15 referred were assessed. CGA led to 3–6 interventions per participant including medication changes, life-style advice, investigations, and onward referrals.
Conclusion
It was feasible to assess frailty in fracture clinic and to identify patients who benefitted from CGA. Frailty prevalence was 9%—25% depending on the tool used and was higher among men. PRISMA-7 could be a practical tool for routine use in fracture clinics.
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Affiliation(s)
- K Ibrahim
- Faculty of Medicine, University of Southampton
- National Institute for Health Research Applied Research Collaboration (NIHR ARC) Wessex
| | - T Lim
- Faculty of Medicine, University of Southampton
| | - M A Mullee
- Faculty of Medicine, University of Southampton
| | - G L Yao
- College of Life Sciences, University of Leicester University
| | - S Zhu
- Faculty of Medicine, University of Southampton
| | - M Baxter
- Medicine for Older People Department, University Hospital Southampton NHS Foundation Trust
| | - S Tilley
- Trauma and Orthopaedic department, University Hospital Southampton NHS Foundation Trust
| | - C Russel
- National Institute for Health Research Applied Research Collaboration (NIHR ARC) Wessex
| | - H C Roberts
- Faculty of Medicine, University of Southampton
- National Institute for Health Research Applied Research Collaboration (NIHR ARC) Wessex
- Medicine for Older People Department, University Hospital Southampton NHS Foundation Trust
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Tan BF, Lim T, Boontiam W. Effect of dietary supplementation with essential oils and a Bacillus probiotic on growth performance, diarrhoea and blood metabolites in weaned pigs. Anim Prod Sci 2021. [DOI: 10.1071/an18752] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
Context
Dietary supplementation of essential oils or in combination with a Bacillus probiotic was investigated as an antibiotic growth promoter for weaned pigs.
Aims
To evaluate the effect of essential oils (i.e. thymol and carvacrol mixture) or in combination with a probiotic strain (i.e. Bacillus subtilis PB6) on the growth performance, diarrhoea incidence, ammonia emission and serological profiles of weaned pigs.
Methods
A total of 96 crossbred ([Yorkshire × Landrace] × Duroc) weaned pigs were randomly allotted to one of six treatments based on sex and initial bodyweight. Each group was distributed into four replicates with four pigs each according to a randomised complete block design. The treatments were: (i) positive control, basal diet supplemented with colistin 150 g/tonne and amoxicillin 200 g/tonne; (ii) negative control, basal diet without supplementation; (iii) T3, basal diet supplemented with essential oils 300 g/tonne; (iv) T4, basal diet supplemented with essential oils 600 g/tonne; (v) T5, basal diet supplemented with essential oils 1000 g/tonne; and (vi) T6, basal diet supplemented with essential oils 300 g/tonne diet and Bacillus probiotics 1000 g/tonne.
Key results
The piglets fed with supplements had a significantly higher average daily gain and lower incidence of diarrhoea than the piglets in the negative control (P = 0.001). Feeding the essential oils alone or in combination with probiotics significantly reduced faecal ammonia emission (P = 0.027) and blood urea nitrogen (P = 0.039), while markedly increasing the serum immunoglobulin G concentration of weaned pigs compared with the negative control treatment (P = 0.014). The difference in time of blood collection had significant effects on blood urea nitrogen and immunoglobulins (P = 0.001). However, no significant differences emerged in average daily feed intake, gain: feed ratio, feed efficiency and antibody against swine fever among the treatments.
Conclusions
Diet supplementation with essential oils or in combination with probiotics improved growth performance and immunity, and lowered ammonia emissions and diarrhoea incidence of weaned pigs.
Implications
These findings provide a basis for the application of phytogenic compounds and probiotics as antibiotic growth promoter alternatives in post-weaning diets for pigs.
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Reardon J, Yuen J, Lim T, Ng R, Gobis B. Provision of Virtual Outpatient Care during the COVID-19 Pandemic and Beyond: Enabling Factors and Experiences from the UBC Pharmacists Clinic. Innov Pharm 2020; 11. [PMID: 34007655 PMCID: PMC8127117 DOI: 10.24926/iip.v11i4.3432] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
The COVID-19 pandemic has generated an unprecedented level of interest in, and uptake of, technology-enabled virtual health care delivery as clinicians seek ways to safely care for patients with physical distancing. This paper describes the UBC Pharmacists Clinic's technical systems and lessons learned using enabling technology and the provision of virtual patient care by pharmacists. Of 2036 scheduled appointments at the clinic in 2019, only 1.5% of initial appointments were conducted virtually which increased to 64% for follow-up appointments. Survey respondents (n = 18) indicated an overall high satisfaction with the format, quality of care delivery, ease of use and benefits to their overall health. Other reports indicate that the majority of patients would like the option to book appointments electronically, email their healthcare provider, and have telehealth visits, although a small minority (8%) have access to virtual modes of care. The Clinic team is bridging the technology gap to better align virtual service provision with patient preferences. Practical advice and information gained through experience are shared here. As the general population and health care providers become increasingly comfortable with video conferencing as a result of COVID-19, it is anticipated that requests for video appointments will increase, technological barriers will decrease and conditions will enable providers to increase their virtual care capabilities. Lessons learned at the Clinic have application to pharmacists in both out-patient and in-patient care settings.
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Affiliation(s)
- F McGain
- Footscray, Melbourne, Victoria, Australia
| | - D Story
- Footscray, Melbourne, Victoria, Australia
| | - T Lim
- Footscray, Melbourne, Victoria, Australia
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Kim W, Hur M, Park SK, Yoo S, Lim T, Yoon H, Kim JT, Bahk JH. Comparison between general, spinal, epidural, and combined spinal-epidural anesthesia for cesarean delivery: a network meta-analysis. Int J Obstet Anesth 2019; 37:5-15. [DOI: 10.1016/j.ijoa.2018.09.012] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/10/2018] [Revised: 09/12/2018] [Accepted: 09/21/2018] [Indexed: 12/18/2022]
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Croker J, Mincham S, Harper C, Chee R, Ng E, Lim T. EP-1378: Stereotactic body radiotherapy in an Australia centre for biopsy proven non-small cell lung cancer. Radiother Oncol 2018. [DOI: 10.1016/s0167-8140(18)31687-6] [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: 10/14/2022]
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Croker J, Ariyapperuma M, Sharma S, Mukhedkar S, Lam W, Lim T. EP-1392: Trimodality treatment of Stage III non-small cell lung cancer in Western Australia. Radiother Oncol 2018. [DOI: 10.1016/s0167-8140(18)31701-8] [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: 10/14/2022]
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15
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Showen R, Dunson C, Woodman GH, Christopher S, Lim T, Wilson SC. Locating fish bomb blasts in real-time using a networked acoustic system. Mar Pollut Bull 2018; 128:496-507. [PMID: 29571401 DOI: 10.1016/j.marpolbul.2018.01.029] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [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: 09/11/2017] [Revised: 01/13/2018] [Accepted: 01/15/2018] [Indexed: 06/08/2023]
Abstract
Results are presented of a demonstration of real-time fish blast location in Sabah, Malaysia using a networked hydroacoustic array based on the ShotSpotter gunshot location system. A total of six acoustic sensors - some fixed and others mobile - were deployed at ranges from 1 to 9 km to detect signals from controlled test blasts. This allowed the blast locations to be determined to within 60 m accuracy, and for the calculated locations to be displayed on a map on designated internet-connected computers within 10 s. A smaller three-sensor system was then installed near Semporna in Eastern Sabah that determined the locations of uncontrolled blasts set off by local fishermen. The success of these demonstrations shows that existing technology can be used to protect reefs and permit more effective management of blast fishing activity through improved detection and enforcement measures and enhanced community engagement.
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Affiliation(s)
- R Showen
- ShotSpotter Inc., Suite 210, 7979 Gateway Blvd, Newark, CA 94560, USA.
| | - C Dunson
- ShotSpotter Inc., Suite 210, 7979 Gateway Blvd, Newark, CA 94560, USA
| | - G H Woodman
- Teng Hoi Conservation Organization, Room 1906, 19/F, China Insurance Group Building, 141 Des Voeux Road, Central, Hong Kong
| | - S Christopher
- Scubazoo Images Sdn. Bhd., 3, Jalan Nosoob Hungab, 88300 Kota Kinabalu, Sabah, Malaysia
| | - T Lim
- Scubazoo Images Sdn. Bhd., 3, Jalan Nosoob Hungab, 88300 Kota Kinabalu, Sabah, Malaysia
| | - S C Wilson
- Five Oceans Environmental Services LLC, P.O. Box 660, Postal Code 131, Hamriyah, Oman
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16
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Nakamura H, Lim T, Puri P. Inflammatory bowel disease in patients with Hirschsprung's disease: a systematic review and meta-analysis. Pediatr Surg Int 2018; 34:149-154. [PMID: 28983688 DOI: 10.1007/s00383-017-4182-4] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 09/21/2017] [Indexed: 12/21/2022]
Abstract
AIM AND OBJECTIVES Hirschsprung-associated enterocolitis (HAEC) continues to be an important cause of morbidity in patients with Hirschsprung's disease (HSCR). HAEC can occur at any time during the course of the disease. The reported incidence of HAEC before surgery ranges from 6 to 50%, and after surgery, it ranges from 2 to 35%. HAEC and inflammatory bowel disease (IBD) have similar clinical presentation including diarrhea, hematochezia, and abdominal pain. In recent years, isolated cases of IBD have been reported in patients who had surgical treatment for HSCR. The exact pathogenesis of HAEC or IBD is not known. However, both conditions are characterized by an abnormal intestinal mucosal barrier function, which may be a common pathway. The purpose of this meta-analysis was to determine the clinical presentation and outcome in patients with HSCR who developed IBD after pull-through operation. MATERIALS AND METHODS A systematic literature search for relevant articles was performed in four databases using the combinations of the following terms "inflammatory bowel disease", "Crohn/Crohn's disease", "ulcerative colitis", and "Hirschsprung disease/Hirschsprung's disease" for studies published between 1990 and 2017. The relevant cohorts of HSCR associated with IBD were systematically searched for clinical presentation and outcomes. RESULTS 14 studies met defined inclusion criteria, reporting a total of 66 patients who had HSCR associated with IBD. Mean age at first operation for HSCR was 5.8 months, mean age at diagnosis of IBD was 7.7 years, and the majority of patients were male (73%). The extent of aganglionosis was total colonic aganglionosis in 41% of patients, long segment in 45%, and rectosigmoid in 14%. The majority of patients underwent a Duhamel procedure (84%) for HSCR. The distribution of IBD was Crohn's disease in 72.3% of patients, ulcerative colitis in 16.9%, and others in 10.8%. Eight articles (47 patients) reported about HAEC, and 22 patients (47%) had experienced HAEC after surgery for HSCR. CONCLUSION Male patients with extensive colonic aganglionosis who continue to suffer from postoperative HAEC after a Duhamel procedure are more susceptible to develop IBD. Recognition of IBD may be important in the long-term follow-up of HSCR patients who have had postoperative HAEC.
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Affiliation(s)
- H Nakamura
- National Children's Research Centre, Our Lady's Children's Hospital, Dublin, Ireland
| | - T Lim
- Department of Chemical and Biological Engineering, Princeton University, Princeton, NJ, USA
| | - P Puri
- National Children's Research Centre, Our Lady's Children's Hospital, Dublin, Ireland. .,School of Medicine and Medical Science and Conway Institute of Biomolecular and Biomedical Research University College Dublin, Dublin, Ireland.
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17
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Lim T, Ico G, Jung K, Bozhilov KN, Nam J, Martinez-Morales AA. Crystal growth and piezoelectric characterization of mechanically stable ZnO nanostructure arrays. CrystEngComm 2018. [DOI: 10.1039/c8ce00799c] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The highest piezoelectric performance of ZnO can be achieved by utilizing the piezoelectric operation along the c-axis due to its anisotropic permanent dipole moment.
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Affiliation(s)
- T. Lim
- College of Engineering – Center for Environmental Research and Technology
- University of California – Riverside
- Riverside
- USA
| | - G. Ico
- Department of Bioengineering
- University of California – Riverside
- Riverside
- USA
| | - K. Jung
- College of Engineering – Center for Environmental Research and Technology
- University of California – Riverside
- Riverside
- USA
- Department of Chemical and Environmental Engineering
| | - K. N. Bozhilov
- Central Facility for Advanced Microscopy and Microanalysis
- University of California – Riverside
- Riverside
- USA
| | - J. Nam
- Department of Bioengineering
- University of California – Riverside
- Riverside
- USA
| | - A. A. Martinez-Morales
- College of Engineering – Center for Environmental Research and Technology
- University of California – Riverside
- Riverside
- USA
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18
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Lai G, Nahar R, Lim T, Kwang X, Liew P, Lim J, Aung Z, Takano A, Lim W, Lau D, Tan W, Ang M, Toh C, Tan B, Devanand A, Too C, Gogna A, Ong B, Koh T, Kanesvaran R, Ng Q, Jain A, Yuan J, Lim T, Lim A, Hillmer A, Zhai W, Iyer G, Tan E, Tam W, Tan D. OA 09.07 Clonality of c-MET Copy Number Gain as a Determinant of Primary TKI Resistance in EGFR-Mutant NSCLC. J Thorac Oncol 2017. [DOI: 10.1016/j.jtho.2017.09.380] [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: 10/18/2022]
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19
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Ahn Y, Jeong TS, Lim T, Jeon JY. Grading system for migrated lumbar disc herniation on sagittal magnetic resonance imaging: an agreement study. Neuroradiology 2017; 60:101-107. [PMID: 29085963 DOI: 10.1007/s00234-017-1943-7] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [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: 06/14/2017] [Accepted: 10/18/2017] [Indexed: 11/30/2022]
Abstract
PURPOSE Migrated lumbar disc herniations (LDHs) in the sagittal plane are common. Disc migration grading can be applied as a useful measurement tool in the diagnosis, treatment, and outcome evaluation of migrated LDH. No study has evaluated the reliability of migrated LDH grading. We evaluated the reliability and functionality of the current magnetic resonance imaging (MRI) grading system for migrated LDH. METHODS We assessed a six-level grading system developed based on sagittal MRI and graded according to the direction (rostral and caudal) and degree (low, high, and very high) of disc migration. One-hundred and one migrated LDHs treated with minimally invasive endoscopic discectomy were analyzed independently by two experienced radiologists. Intraobserver and interobserver agreements were assessed by kappa statistics. RESULTS The most common migrated LDH grade was grade 4 (30.94%; caudal, low-grade migration). Rostral and caudal migrations were more common in the upper and lower lumbar levels, respectively. Interobserver agreement in the grading of migrated LDH was good at both the first (kappa = 0.737) and second assessment (kappa = 0.657). The intraobserver agreement for reader 1 was very good (kappa = 0.827) and for reader 2 was good (kappa = 0.620). CONCLUSIONS The current grading system for migrated LDH was found to be reliable and functional with good interobserver and intraobserver agreement. It may be useful in the interpretation of disc migration patterns and outcomes of various minimally invasive surgical procedures.
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Affiliation(s)
- Y Ahn
- Department of Neurosurgery, Gachon University Gil Medical Center, 21, Namdong-daero 774 beon-gil, Namdong-gu, Incheon, 21565, Republic of Korea (South Korea).
| | - T S Jeong
- Department of Neurosurgery, Gachon University Gil Medical Center, 21, Namdong-daero 774 beon-gil, Namdong-gu, Incheon, 21565, Republic of Korea (South Korea)
| | - T Lim
- Department of Radiology, Gachon University Gil Medical Center, Incheon, South Korea
| | - J Y Jeon
- Department of Radiology, Gachon University Gil Medical Center, Incheon, South Korea
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McGain F, Story D, Lim T, McAlister S. Financial and environmental costs of reusable and single-use anaesthetic equipment. Br J Anaesth 2017; 118:862-869. [PMID: 28505289 DOI: 10.1093/bja/aex098] [Citation(s) in RCA: 76] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/21/2017] [Indexed: 11/13/2022] Open
Abstract
BACKGROUND. An innovative approach to choosing hospital equipment is to consider the environmental costs in addition to other costs and benefits. METHODS. We used life cycle assessment to model the environmental and financial costs of different scenarios of replacing reusable anaesthetic equipment with single-use variants. The primary environmental costs were CO 2 emissions (in CO 2 equivalents) and water use (in litres). We compared energy source mixes between Australia, the UK/Europe, and the USA. RESULTS. For an Australian hospital with six operating rooms, the annual financial cost of converting from single-use equipment to reusable anaesthetic equipment would be an AUD$32 033 (£19 220), 46% decrease. In Australia, converting from single-use to reusable equipment would result in an increase of CO 2 emissions from 5095 (95% CI: 4614-5658) to 5575 kg CO 2 eq (95% CI: 5542-5608), a 480 kg CO 2 eq (9%) increase. Using the UK/European power mix, converting from single-use (5575 kg CO 2 eq) to reusable anaesthetic equipment (802 kg CO 2 eq) would result in an 84% reduction (4873 kg CO 2 eq) in CO 2 emissions, whilst in the USA converting to reusables would have led to a 2427 kg CO 2 eq (48%) reduction. In Australia, converting from single-use to reusable equipment would more than double water use from 34.4 to 90.6 kilolitres. CONCLUSIONS. For an Australian hospital with six operating rooms, converting from single-use to reusable anaesthetic equipment saved more than AUD$30 000 (£18 000) per annum, but increased the CO 2 emissions by almost 10%. The CO 2 offset is highly dependent on the power source mix, while water consumption is greater for reusable equipment.
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Affiliation(s)
- F McGain
- Department of Anaesthesia.,Department of Intensive Care, Western Health, Gordon Street, Footscray, VIC 3011, Australia
| | - D Story
- Department of Anaesthesia, Austin Hospital, Banksia Street, Heidelberg, VIC 3084, Australia
| | - T Lim
- Department of Anaesthesia
| | - S McAlister
- Ecoquantum Consulting Suite 43A Crisp Avenue, Brunswick, VIC 3056, Australia
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21
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Teng R, Takano A, Tan WL, Ang MK, Toh CK, Ng QS, Lim WT, Tan EH, Lim T, Tan D. T790M co-exists with other secondary resistance mechanisms in EGFR mutation positive NSCLC and are associated with inferior outcomes. Ann Oncol 2017. [DOI: 10.1093/annonc/mdx091.051] [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: 11/14/2022] Open
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23
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Lim T, Jani A, Cooper S, Rossi P. Better Toxicity Outcomes With HDR and LDR Brachytherapy in Comparison With External Beam Radiation Therapy for Prostate Cancer. Int J Radiat Oncol Biol Phys 2015. [DOI: 10.1016/j.ijrobp.2015.07.1058] [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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24
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Lim T, Wang J, Frank S, Stafford R, Bruno T, Bathala T, Mahmood U, Pugh T, Ibbott G, Kudchadker R. SU-E-J-214: MR Protocol Development to Visualize Sirius MRI Markers in Prostate Brachytherapy Patients for MR-Based Post-Implant Dosimetry. Med Phys 2015. [DOI: 10.1118/1.4924300] [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: 11/07/2022] Open
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25
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Ee S, Young S, Tan E, Lim D, Tan G, Jain A, Zeng W, Lim T, Takano A, Tan D. Clinical Characteristics and Response to EGFR TKI in Never Smoker Squamous Lung Cancer. Ann Oncol 2015. [DOI: 10.1093/annonc/mdv050.20] [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: 11/14/2022] Open
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26
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Nalliah C, Lim T, Qian P, Bhaskaran A, Kurup R, Kizana E, Kovoor P, Ross D, Thomas S. Left atrial surface area remaining not isolated after ablation of persistent atrial fibrillation predicts long-term outcomes. Heart Lung Circ 2015. [DOI: 10.1016/j.hlc.2015.06.307] [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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27
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Lim T, Prabhu R, Switchenko J, Mister D, Torres M. Skin Sparing Mastectomy and Immediate Reconstruction in Locally Advanced Breast Cancer Patients Treated With Neoadjuvant Chemotherapy and Postmastectomy Radiation Therapy: Long-Term Oncologic and Patient-Reported Quality of Life Outcomes. Int J Radiat Oncol Biol Phys 2014. [DOI: 10.1016/j.ijrobp.2014.05.677] [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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28
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Lim T, Kim T. Locally advanced or metastatic pancreatic cancer in elderly patients: Chemotherapy versus best supportive care. J Geriatr Oncol 2014. [DOI: 10.1016/j.jgo.2014.06.025] [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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29
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Lim T, Wang J, Kudchadker R, Stafford R, Bathala T, Pugh T, Ibbott G, Frank S. SU-C-17A-02: Sirius MRI Markers for Prostate Post-Implant Assessment: MR Protocol Development. Med Phys 2014. [DOI: 10.1118/1.4889729] [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: 11/07/2022] Open
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Abstract
BACKGROUND Asthma is becoming more prevalent with large numbers of individuals suffering from work-exacerbated asthma. AIMS To examine the characteristics of workplace exposures and working days lost in relation to work-exacerbated asthma (WEA) in a workers' compensation population. METHODS An analysis of accepted workers' compensation asthma claims in Ontario over a 5-year period. Claims among the top three industry groups were categorized based on working time lost of 1 day or less, 2-5 days and 6 days or more. Attributable agents were subdivided into dusts, smoke, chemicals and sensitizers. RESULTS Among the asthma claims, 72% (645) fulfilled criteria for WEA from their history. The commonest industry groups were services, education and health care, with 270 claims that met our analysis requirements. Within these industry groups, education had a lower proportion of workers with short exacerbations (missing 1 day or less: 27%) while the health care industry had a higher than expected proportion of short exacerbations (55%). The agents to which WEA was attributed differed across the groups, with dusts having the highest proportion in the education group (65%), smoke in the service industry (34%) and sensitizers in health care (41%). Those agents more commonly attributed to exacerbations tended to have lower rates of prolonged exacerbation compared with less commonly involved agents. CONCLUSIONS The morbidity of WEA and the type of agents to which it was attributed varied between industry groups.
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Affiliation(s)
- T Lim
- Department of Medicine, University of Toronto, Toronto, Ontario, Canada M5T 2S8
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31
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van Grieken NCT, Aoyama T, Chambers PA, Bottomley D, Ward LC, Inam I, Buffart TE, Das K, Lim T, Pang B, Zhang SL, Tan IB, Carvalho B, Heideman DAM, Miyagi Y, Kameda Y, Arai T, Meijer GA, Tsuburaya A, Tan P, Yoshikawa T, Grabsch HI. Erratum: KRAS and BRAF mutations are rare and related to DNA mismatch repair deficiency in gastric cancer from the East and the West: Results from a large international multicentre study. Br J Cancer 2014. [PMCID: PMC3899782 DOI: 10.1038/bjc.2013.824] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
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32
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Nalliah C, Lim T, Koay C, Chik W, Thelander J, Zecchin R, Ross D, Thomas S. Characterisation of Symptoms in Patients With Recurrent Atrial Arrhythmia Following Catheter Ablation. Heart Lung Circ 2013. [DOI: 10.1016/j.hlc.2013.05.254] [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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Yang X, Thornburg T, Suo Z, Jun S, Robison A, Li J, Lim T, Cao L, Hoyt T, Avci R, Pascual DW. Flagella overexpression attenuates Salmonella pathogenesis. PLoS One 2012; 7:e46828. [PMID: 23056473 PMCID: PMC3463563 DOI: 10.1371/journal.pone.0046828] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2012] [Accepted: 09/05/2012] [Indexed: 11/18/2022] Open
Abstract
Flagella are cell surface appendages involved in a number of bacterial behaviors, such as motility, biofilm formation, and chemotaxis. Despite these important functions, flagella can pose a liability to a bacterium when serving as potent immunogens resulting in the stimulation of the innate and adaptive immune systems. Previous work showing appendage overexpression, referred to as attenuating gene expression (AGE), was found to enfeeble wild-type Salmonella. Thus, this approach was adapted to discern whether flagella overexpression could induce similar attenuation. To test its feasibility, flagellar filament subunit FliC and flagellar regulon master regulator FlhDC were overexpressed in Salmonella enterica serovar Typhimurium wild-type strain H71. The results show that the expression of either FliC or FlhDC alone, and co-expression of the two, significantly attenuates Salmonella. The flagellated bacilli were unable to replicate within macrophages and thus were not lethal to mice. In-depth investigation suggests that flagellum-mediated AGE was due to the disruptive effects of flagella on the bacterial membrane, resulting in heightened susceptibilities to hydrogen peroxide and bile. Furthermore, flagellum-attenuated Salmonella elicited elevated immune responses to Salmonella presumably via FliC's adjuvant effect and conferred robust protection against wild-type Salmonella challenge.
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Affiliation(s)
- Xinghong Yang
- Department of Immunology & Infectious Diseases, Montana State University, Bozeman, Montana, United States of America.
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34
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Tan PS, Koh E, Pang C, Ong WS, Ngo L, Soh LT, Quek R, Chay WY, Ho TH, Tay SK, Chew SH, Lim-Tan SK, Khoo-Tan H, Lim SL, Busmanis I, Goh LK, Chia YN, Chia WK, Lim T. Uterine leiomyosarcoma in asian patients: validation of the revised Federation of gynecology and obstetrics staging system and identification of prognostic classifiers. Oncologist 2012; 17:1286-93. [PMID: 22829569 PMCID: PMC3481894 DOI: 10.1634/theoncologist.2012-0124] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2012] [Accepted: 06/28/2012] [Indexed: 01/21/2023] Open
Abstract
BACKGROUND In 2008, the Federation of Gynecology and Obstetrics (FIGO) revised their 1988 staging system for uterine leiomyosarcomas. In this article, we compare performance of the 2008 and 1988 FIGO systems. METHODS Individual case data were manually culled. Staging was retrospectively assessed according to revised and 1998 FIGO criteria. Overall survival distribution was assessed by the Kaplan-Meier method. Harrell's concordance index was used to assess the discriminative ability of a fitted Cox model to predict overall survival. RESULTS A total of 110 cases of uterine leiomyosarcomas were reviewed and data from 88 patients were analyzed. In all, 71% of cases were classified as stage I, 7% as stage II, 3% as stage III, and 19% as stage IV under the revised FIGO staging system. Nine patients (10.2%) were downstaged and none were upstaged. The revised FIGO system did not show a significant improvement over the 1988 FIGO system in the ability to discriminate the risk of death of patients between stages, with concordance indexes of 0.70 and 0.71, respectively. Most patients were classified as stage I with age, tumor grade, tumor size, and lymphovascular invasion as prognostic factors. CONCLUSION The 2008 revised FIGO staging system for uterine leiomyosarcomas does not perform better than the 1988 system for uterine endometrial carcinomas. A better staging system is needed for these cases.
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Affiliation(s)
| | - Elisa Koh
- Department of Obstetrics and Gynaecology, and
| | - Cindy Pang
- Department of Obstetrics and Gynaecology, and
| | - Whee-Sze Ong
- Division of Clinical Trials and Epidemiological Sciences
| | | | | | | | | | - Tew-Hong Ho
- Department of Obstetrics and Gynaecology, and
| | | | | | | | - Hs Khoo-Tan
- Department of Radiation Oncology, National Cancer Centre, Republic of Singapore
| | - Sheow Lei Lim
- Department of Gynaecology Oncology, KK Women's and Children's Hospital, Republic of Singapore
| | - Inny Busmanis
- Department of Pathology, Singapore General Hospital, Republic of Singapore
| | - Liang Kee Goh
- Saw Swee Hock School of Public Health, National University of Singapore, Republic of Singapore
- Duke–National University of Singapore Graduate Medical School, Republic of Singapore
| | - Yin-Nin Chia
- Department of Gynaecology Oncology, KK Women's and Children's Hospital, Republic of Singapore
| | | | - Timothy Lim
- Department of Gynaecology Oncology, KK Women's and Children's Hospital, Republic of Singapore
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Abstract
Enterotoxigenic Escherichia coli CFA/I is a protective antigen and has been overexpressed in bacterial vectors, such as Salmonella Typhimurium H683, to generate vaccines. Effects that overexpressed CFA/I may engender on the bacterial host remain largely unexplored. To investigate, we constructed a high CFA/I expression strain, H683-pC2, and compared it to a low CFA/I expression strain, H683-pC, and to a non-CFA/I expression strain, H683-pY. The results showed that H683-pC2 was less able to migrate into semisolid agar (0.35%) than either H683-pC or H683-pY. Bacteria that migrated showed motility halo sizes of H683-pC2 < H683-pC < H683-pY. In the liquid culture media, H683-pC2 cells precipitated to the bottom of the tube, while those of H683-pY did not. In situ imaging revealed that H683-pC2 bacilli tended to auto-agglutinate within the semisolid agar, while H683-pY bacilli did not. When the cfaBE fimbrial fiber encoding genes were deleted from pC2, the new plasmid, pC2(-), significantly recovered bacterial swimming capability. Our study highlights the negative impact of overexpressed CFA/I fimbriae on bacterial swimming motility.
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Affiliation(s)
- Ling Cao
- Immunology & Infectious Diseases, Montana State University, Bozeman, MT 59717-3610, USA
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36
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Cao L, Lim T, Jun S, Thornburg T, Avci R, Yang X. Vulnerabilities in Yersinia pestis caf operon are unveiled by a Salmonella vector. PLoS One 2012; 7:e36283. [PMID: 22558420 PMCID: PMC3340336 DOI: 10.1371/journal.pone.0036283] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2011] [Accepted: 03/28/2012] [Indexed: 11/18/2022] Open
Abstract
During infection, Yersinia pestis uses its F1 capsule to enhance survival and cause virulence to mammalian host. Since F1 is produced in large quantities and secreted into the host tissues, it also serves as a major immune target. To hold this detrimental effect under proper control, Y. pestis expresses the caf operon (encoding the F1 capsule) in a temperature-dependent manner. However, additional properties of the caf operon limit its expression. By overexpressing the caf operon in wild-type Salmonella enterica serovar Typhimurium under a potent promoter, virulence of Salmonella was greatly attenuated both in vitro and in vivo. In contrast, expression of the caf operon under the regulation of its native promoter exhibited negligible impairment of Salmonellae virulence. In-depth investigation revealed all individual genes in the caf operon attenuated Salmonella when overexpressed. The deleterious effects of caf operon and the caf individual genes were further confirmed when they were overexpressed in Y. pestis KIM6+. This study suggests that by using a weak inducible promoter, the detrimental effects of the caf operon are minimally manifested in Y. pestis. Thus, through tight regulation of the caf operon, Y. pestis precisely balances its capsular anti-phagocytic properties with the detrimental effects of caf during interaction with mammalian host.
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Affiliation(s)
- Ling Cao
- Immunology and Infectious Diseases, Montana State University, Bozeman, Montana, United States of America
| | - Timothy Lim
- Immunology and Infectious Diseases, Montana State University, Bozeman, Montana, United States of America
| | - SangMu Jun
- Immunology and Infectious Diseases, Montana State University, Bozeman, Montana, United States of America
| | - Theresa Thornburg
- Immunology and Infectious Diseases, Montana State University, Bozeman, Montana, United States of America
| | - Recep Avci
- Imaging and Chemical Analysis Laboratory, Department of Physics, Montana State University, Bozeman, Montana, United States of America
| | - Xinghong Yang
- Immunology and Infectious Diseases, Montana State University, Bozeman, Montana, United States of America
- * E-mail:
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Eisenstein A, Leung L, Lim T, Ning Z, Polanyi JC. Reaction dynamics at a metal surface; halogenation of Cu(110). Faraday Discuss 2012; 157:337-53; discussion 375-98. [DOI: 10.1039/c2fd20023f] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Yang X, Suo Z, Thornburg T, Holderness K, Cao L, Lim T, Walters N, Kellerman L, Loetterle L, Avci R, Pascual DW. Expression of Escherichia coli virulence usher protein attenuates wild-type Salmonella. Virulence 2012; 3:29-42. [PMID: 22286706 DOI: 10.4161/viru.3.1.18447] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023] Open
Abstract
Generation of a live attenuated vaccine for bacterial pathogens often requires prior knowledge of the pathogen's virulence factors. We hypothesized an alternative approach of heterologous gene expression would make a wild-type (wt) pathogen more susceptible to host cell killing, thus, resulting in immunization. As proof of concept, the heterologous expression of enterotoxigenic E. coli (ETEC) colonization factor antigen I (CFA/I) was tested to attenuate Salmonella. The overexpression of CFA/I resulted in significant attenuation of wt Salmonella. In-depth studies revealed the attenuation depended on the co-expression of chaperone (CfaA) and usher (CfaC) proteins. Remarkably, the CfaAC-attenuated Salmonella conferred protection against wt Salmonella challenge. Mechanistic study indicated CfaAC made Salmonella outer membranes permeable, causing Salmonella to be vulnerable to host destruction. Thus, enhancing bacterial permeability via CfaAC represents an alternative method to attenuate pathogens despite the presence of unknown virulence factors.
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Affiliation(s)
- Xinghong Yang
- Department of Immunology & Infectious Diseases, Montana State University, Bozeman, MT, USA
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Wang C, Thia E, Lim T. An adnexal mass with raised serum beta-HCG: an unusual presentation of ovarian dermoid cyst. Eur J Obstet Gynecol Reprod Biol 2011; 160:238-9. [PMID: 22074729 DOI: 10.1016/j.ejogrb.2011.10.011] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2011] [Accepted: 10/14/2011] [Indexed: 11/27/2022]
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Kang H, Cho Y, Choi H, Kang B, Lim T. 355 Comparison of Usefulness Between Linear Probe and Microconvex Probe in Ultrasound-Guided Central Venous Catheterization. Ann Emerg Med 2011. [DOI: 10.1016/j.annemergmed.2011.06.387] [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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Mánuel JM, Morales FM, Lozano JG, García R, Lim T, Kirste L, Aidam R, Ambacher O. Growth and characterization of InAlN layers nearly lattice-matched to GaN. ACTA ACUST UNITED AC 2011. [DOI: 10.1002/pssc.201000985] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Park S, Ahn HK, Lim T, Park YH, Ahn JS, Im Y. CA 15-3 elevations according to breast cancer subtypes at initial diagnosis of metastatic breast cancer (MBC). J Clin Oncol 2011. [DOI: 10.1200/jco.2011.29.15_suppl.e11109] [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: 11/20/2022] Open
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Poh BK, Mancer K, Goh D, Lim T, Ng V, Ng KK, Ng FC. PlasmaKinetic™ (bipolar) transurethral resection of prostate: a prospective trial to study pathological artefacts, surgical parameters and clinical outcomes. Singapore Med J 2011; 52:336-339. [PMID: 21633766] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
INTRODUCTION The aims of the study were to compare the degree of cautery artefacts in prostatic chips between monopolar and PlasmaKinetic™ transurethral resection of prostate (TURP), and to determine if there is any difference in the intraoperative and post surgical parameters between them. METHODS After institutional review board approval, patients were prospectively enrolled to undergo PlasmaKinetic™ TURP. Their parameters were compared with those of the historical monopolar TURP controls. All histological specimens were reviewed by a single senior pathologist. RESULTS 46 patients were recruited to undergo PlasmaKinetic™ TURP. The resection time was significantly longer for the bipolar group compared to the monopolar group (50.2 versus 36.7 min, p-value is 0.001). The speed of resection (resection weight/time) was lower for the bipolar group (0.45 versus 0.56 g/min, p-value is 0.017). More irrigant was used for the bipolar group (21.2 versus 15.6 litres, p-value is 0.001) intraoperatively. There was no statistically significant difference in terms of intraoperative drop in haemoglobin and serum sodium change between the two groups. There seems to be a lesser degree of cautery artefacts in the PlasmaKinetic™ group than the monopolar group (42.17 versus 45.07 microns); however, this was not statistically significant (p-value is 0.452). CONCLUSION Bipolar TURP seems to result in a lesser degree of cautery artefacts when compared to conventional monopolar TURP, albeit statistically insignificant, compared to monopolar TURP. TURP also resulted in a longer resection time and increased irrigant use, but no difference in blood loss and serum sodium levels.
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Affiliation(s)
- B K Poh
- Department of Urology, Changi General Hospital, 2 Simei Street 3, Singapore 529889.
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Lim T, Yun J, Lee J, Park S, Park J, Park Y, Lim H, Kang W. Updated survival results of the randomized phase II study comparing cisplatin/capecitabine (CX) with epirubicin plus CX (ECX) in advanced gastric cancer (AGC). J Clin Oncol 2011. [DOI: 10.1200/jco.2011.29.4_suppl.46] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
46 Background: We previously reported results of a randomized study showing that CX is equally active to ECX in terms of progression-free survival (PFS) (Yun et al. Eur J Cancer. 2010). Here we report updated overall survival (OS) results with an additional 12 months' follow-up. Methods: Ninety-one chemotherapy-naïve patients with histologically-confirmed, measurable AGC were randomized to receive CX (cisplatin 75 mg/m2 iv on day 1 and capecitabine 1,000 mg/m2 bid po on days 1-14, n=45) or ECX (epirubicin 50 mg/m2 plus CX, n=44) every 3 weeks. After CX or ECX had failed, second-line chemotherapy (SLC) was recommended for all patients if their performance status was preserved. Results: Treatment duration was similar for both arms (4.4 for CX v 4.2 months for ECX). There was no relevant difference in the occurrence of overall grade 3 or 4 toxicities between the CX and ECX arms (80% v 78%, respectively; p=0.516). However, none in the CX and 12% in the ECX arm discontinued treatment because of toxicity. There were no significant differences in therapeutic efficacy between CX and ECX with respect to the response rate (38% v 37%, respectively), PFS (6.4 v 6.5 months), as well as OS (12.7 v 13.8 months; p=0.51). After failure, 60% of patients (26 CX and 28 ECX patients) received SLC. However, OS was not differed whether a patient was treated with SLC or not (13.1 v 11.2 months; p=0.94). Conclusions: The present analysis confirms previous findings that both CX and ECX appear to be comparatively active as first-line chemotherapy for AGC. Furthermore, the role of SLC in AGC warrants further evaluation. No significant financial relationships to disclose.
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Affiliation(s)
- T. Lim
- Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea
| | - J. Yun
- Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea
| | - J. Lee
- Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea
| | - S. Park
- Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea
| | - J. Park
- Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea
| | - Y. Park
- Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea
| | - H. Lim
- Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea
| | - W. Kang
- Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea
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Yi JH, Kim JH, Baek KK, Lim T, Lee DJ, Ahn YC, Kim K, Kim SJ, Ko YH, Kim WS. Elevated LDH and paranasal sinus involvement are risk factors for central nervous system involvement in patients with peripheral T-cell lymphoma. Ann Oncol 2011; 22:1636-1643. [PMID: 21220520 PMCID: PMC3121968 DOI: 10.1093/annonc/mdq645] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.9] [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] [Indexed: 01/12/2023] Open
Abstract
Background: The incidence and risk factors of central nervous system (CNS) involvement in peripheral T-cell lymphomas (PTCLs) are still unclear. Patients and methods: We analyzed 228 patients with PTCLs, excluding cases of extranodal natural killer/T-cell lymphoma and primary cutaneous T-cell lymphoma, by retrospectively collecting the clinical features and outcomes of the patients. Results: Twenty events (8.77%, 20/228) of CNS involvement were observed during a median follow-up period of 13.9 months (range 0.03–159.43). Based on univariate analysis, elevated serum lactate dehydrogenase (LDH) level [P = 0.019, relative risk (RR) 5.904, 95% confidence interval (CI) 1.334–26.123] and involvement of the paranasal sinus (P = 0.032, RR 3.137, 95% CI 1.105–8.908) adversely affect CNS involvement. In multivariate analysis, both were independently poor prognostic factors for CNS relapse [elevated LDH level: P = 0.011, hazard ratio (HR) 6.716, 95% CI 1.548–29.131; involvement of the paranasal sinus: P = 0.008, HR 3.784, 95% CI 1.420–10.083]. The survival duration of patients with CNS involvement was significantly shorter than that of the patients without CNS involvement (P = 0.009), with median overall survival of 7.60 months (95% CI of 4.92–10.28) versus 27.43 months (95% CI of 0.00–57.38), respectively. Conclusions: Elevated LDH level and involvement of the paranasal sinus are two risk factors for CNS involvement in patients with PTCLs. Considering the poor prognoses after CNS relapse, prophylaxis should be considered with the presence of any risk factor.
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Affiliation(s)
- J H Yi
- Division of Hematology-Oncology, Department of Medicine
| | - J H Kim
- Division of Hematology-Oncology, Department of Medicine
| | - K K Baek
- Division of Hematology-Oncology, Department of Medicine
| | - T Lim
- Division of Hematology-Oncology, Department of Medicine
| | - D J Lee
- Division of Hematology-Oncology, Department of Medicine
| | - Y C Ahn
- Department of Radiation Oncology
| | - K Kim
- Division of Hematology-Oncology, Department of Medicine
| | - S J Kim
- Division of Hematology-Oncology, Department of Medicine
| | - Y H Ko
- Department of Pathology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - W S Kim
- Division of Hematology-Oncology, Department of Medicine.
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Chik W, Lim T, Koay C, See V, McCall R, Zecchin R, Byth K, Thomas L, Ross D, Thomas S. Mitral Isthmus Ablation Line Reconnections are Common and Predicts Mitral Annular Dependent Flutters Following Pulmonary Vein Isolations for Atrial Fibrillation. Heart Lung Circ 2011. [DOI: 10.1016/j.hlc.2011.05.254] [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: 10/18/2022]
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Chik W, Lim T, Koay C, See V, McCall R, Zecchin R, Byth K, Thomas L, Ross D, Thomas S. Cavotricuspid Isthmus Ablation Line Reconnections are Associated with Clinically Inducible Cavotricuspid Isthmus Dependent Flutters in Patients Undergoing Pulmonary Vein Isolation For Atrial Fibrillation. Heart Lung Circ 2011. [DOI: 10.1016/j.hlc.2011.05.226] [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: 10/18/2022]
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Lim T, Koay C, See V, McCall R, Chik W, Zecchin R, Byth K, Seow S, Thomas L, Ross D, Thomas S. Larger Body Size but not BMI Predict Longer Atrial Fibrillation Ablation Procedure Times and Increased Arrhythmia Recurrences on Long Term Follow Up. Heart Lung Circ 2011. [DOI: 10.1016/j.hlc.2011.05.248] [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: 10/18/2022]
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Lim T, Koay C, See V, Zecchin R, McCall R, Chik W, Byth K, Seow S, Thomas L, Ross D, Thomas S. Improvements in Quality Of Life and 6-Minute Walk Distances are Not Affected by Different Ablation Strategies or Recurrent Atrial Tachyarrhythmias but may be Worsened by Antiarrhythmic Drug Therapy. Heart Lung Circ 2011. [DOI: 10.1016/j.hlc.2011.05.241] [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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