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Teychenne M, Apostolopoulos M, France-Ratcliffe M, Chua E, Hall S, Opie RS, Blunden S, Duncan MJ, Olander EK, Koorts H. Factors relating to sustainability and scalability of the 'Food, Move, Sleep (FOMOS) for Postnatal Mental Health' program: Qualitative perspectives from key stakeholders across Australia. Health Promot J Austr 2024; 35:393-409. [PMID: 37384432 DOI: 10.1002/hpja.767] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2023] [Revised: 06/16/2023] [Accepted: 06/19/2023] [Indexed: 07/01/2023] Open
Abstract
ISSUE ADDRESSED Supporting healthy behaviours (quality diet, physical activity, sleep) through home-based interventions is feasible to improve postnatal mental health. Involving stakeholders in developing interventions is essential for maximising accessibility, implementation and scale-up. This study aimed to identify factors affecting the sustainable implementation and scalability of the Food, Move, Sleep (FOMOS) for Postnatal Mental Health program, including strategies to enhance research-practice translation. METHODS Stakeholders (n = 13) involved in promoting physical activity, healthy eating, postnatal and mental health, public health and/or policy participated in semi-structured interviews. Interviews, based on PRACTIS Guide recommendations for implementation and scale-up, explored perceptions of program design, implementation and scalability. Reflexive thematic analysis was undertaken. Identified implementation and scale-up strategies were mapped against the Expert Recommendations for Implementing Change compendium and PRACTIS Guide. RESULTS Individual-level: Targeting multiple systems (primary, tertiary, community-based care) and entry points (early, mid-postpartum) for uptake was important. For equity, screening women in public hospitals, engaging with community agencies and targeting most at-risk women, was suggested. Provider-level: Stakeholders identified strategies to enhance future roll-out (organisations assisting with recruitment). Factors impacting sustainability included high demand for the FOMOS program, and governance around screening and funding; online delivery, connecting with partners and providers and integration into existing services may enhance sustainability. Systems-level: Political support and community champions were perceived important for program dissemination. Nine strategies addressing program uptake, reach, implementation, potential scalability and sustainability were identified. CONCLUSIONS For sustainable implementation and potential scalability of a home-based multi-behaviour postnatal intervention, multi-level implementation and scale-up strategies, aligned with existing health systems, policies and initiatives to support postnatal mental health should be considered. SO WHAT?: This paper provides a comprehensive list of strategies that can be used to enhance sustainable implementation and scalability of healthy behaviour programs targeting postnatal mental health. Further, the interview schedule, systematically developed and aligned with the PRACTIS Guide, may serve as a useful resource for researchers conducting similar studies in future.
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Affiliation(s)
- Megan Teychenne
- Institute for Physical Activity and Nutrition (IPAN), School of Exercise and Nutrition Sciences, Deakin University, Geelong, Victoria, Australia
| | - Maria Apostolopoulos
- Institute for Physical Activity and Nutrition (IPAN), School of Exercise and Nutrition Sciences, Deakin University, Geelong, Victoria, Australia
| | - Madeleine France-Ratcliffe
- Institute for Physical Activity and Nutrition (IPAN), School of Exercise and Nutrition Sciences, Deakin University, Geelong, Victoria, Australia
| | - Elysha Chua
- Institute for Physical Activity and Nutrition (IPAN), School of Exercise and Nutrition Sciences, Deakin University, Geelong, Victoria, Australia
| | - Sanae Hall
- Institute for Physical Activity and Nutrition (IPAN), School of Exercise and Nutrition Sciences, Deakin University, Geelong, Victoria, Australia
| | - Rachelle S Opie
- Institute for Physical Activity and Nutrition (IPAN), School of Exercise and Nutrition Sciences, Deakin University, Geelong, Victoria, Australia
| | - Sarah Blunden
- Appleton Institute of Behavioural Science, Central Queensland University, Adelaide, South Australia, Australia
| | - Mitch J Duncan
- School of Medicine & Public Health, College of Health, Medicine, and Wellbeing, The University of Newcastle, Newcastle, New South Wales, Australia
- Active Living Research Program, Hunter Medical Research Institute, New Lambton Heights, New South Wales, Australia
| | - Ellinor K Olander
- Centre for Maternal and Child Health Research, School of Health and Psychological Sciences, City, University of London, London, UK
| | - Harriet Koorts
- Institute for Physical Activity and Nutrition (IPAN), School of Exercise and Nutrition Sciences, Deakin University, Geelong, Victoria, Australia
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France-Ratcliffe M, Christie HE, Blunden S, Opie RS, Chua E, Karimi N, Markides B, Uldrich AC, Olander EK, White RL, van der Pligt P, Willcox J, Abbott G, Denton J, Lewis M, Apostolopoulos M, Love P, Lal A, Hallgren M, Costigan S, Duncan MJ, Teychenne M. Evaluating a multi-behavioural home-based intervention for reducing depressive symptoms in postnatal women : The food, move, sleep (FOMOS) for postnatal mental health randomised controlled trial protocol. Contemp Clin Trials 2024; 136:107383. [PMID: 37935305 DOI: 10.1016/j.cct.2023.107383] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2023] [Revised: 10/22/2023] [Accepted: 11/03/2023] [Indexed: 11/09/2023]
Abstract
BACKGROUND Postnatal depression (PND) is a leading cause of illness and death among women following childbirth. Physical inactivity, sedentary behaviour, poor sleep, and sub-optimal diet quality are behavioural risk factors for PND. A feasible, sustainable, and scalable intervention to improve healthy behaviours and reduce PND symptoms among women at postpartum is needed. This study aims to examine the effectiveness of a multi-behavioural home-based program Food, Move, Sleep (FOMOS) for Postnatal Mental Health designed to improve PND symptoms in women at postpartum. METHODS This randomised clinical trial will recruit 220 Australian women (2-12 months postpartum) experiencing heightened PND symptoms (Edinburgh Postnatal Depression Scale score ≥ 10). Participants will be randomised to FOMOS or wait-list control receiving standard clinical care. FOMOS is a 6-month mobile health (mHealth) intervention targeting diet quality, physical activity, sedentary behaviour, sleep, and mental health. The intervention, informed by the Social Cognitive Theory and incorporating behaviour change techniques defined in the CALO-RE taxonomy and Cognitive Behavioural Treatment of Insomnia, provides exercise equipment, and educational/motivational material and social support via mHealth and social media. Data collection pre-intervention and at 3, 6 and 12 months will assess the primary outcome of PND symptoms and secondary outcomes (diet quality, physical activity, sitting time, sleep quality) using self-report and device measures. Process evaluation will explore acceptability, appropriateness, cost-effectiveness, feasibility, and sustainability via analytic tools, record keeping, interviews, and surveys. DISCUSSION If effective, FOMOS could be a feasible and potentially scalable management strategy to support improvement of health behaviours and mental health for women with PND symptoms. TRIAL REGISTRATION https://www.anzctr.org.au/Trial/Registration/TrialReview.aspx?ACTRN=12622001079730p.
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Affiliation(s)
- Madeleine France-Ratcliffe
- Institute for Physical Activity and Nutrition (IPAN), School of Exercise and Nutrition Sciences, Deakin University, Geelong, Australia.
| | - Hannah E Christie
- School of Medical, Indigenous, and Health Sciences, University of Wollongong, Wollongong, Australia
| | - Sarah Blunden
- Appleton Institute of Behavioural Science, Central Queensland University, Adelaide, Australia
| | - Rachelle S Opie
- Institute for Physical Activity and Nutrition (IPAN), School of Exercise and Nutrition Sciences, Deakin University, Geelong, Australia
| | - Elysha Chua
- Institute for Physical Activity and Nutrition (IPAN), School of Exercise and Nutrition Sciences, Deakin University, Geelong, Australia
| | - Nazgol Karimi
- Institute for Physical Activity and Nutrition (IPAN), School of Exercise and Nutrition Sciences, Deakin University, Geelong, Australia
| | - Brittany Markides
- Institute for Physical Activity and Nutrition (IPAN), School of Exercise and Nutrition Sciences, Deakin University, Geelong, Australia
| | - Alison C Uldrich
- Institute for Physical Activity and Nutrition (IPAN), School of Exercise and Nutrition Sciences, Deakin University, Geelong, Australia
| | - Ellinor K Olander
- Centre for Maternal and Child Health Research, School of Health and Psychological Sciences, City, University of London, London, UK
| | - Rhiannon L White
- School of Health Sciences, Western Sydney University, Penrith, NSW, Australia
| | - Paige van der Pligt
- Institute for Physical Activity and Nutrition (IPAN), School of Exercise and Nutrition Sciences, Deakin University, Geelong, Australia; Department of Nutrition, Western Health, Footscray, Victoria, Australia
| | | | - Gavin Abbott
- Institute for Physical Activity and Nutrition (IPAN), School of Exercise and Nutrition Sciences, Deakin University, Geelong, Australia
| | - Jane Denton
- FOMOS Consumer and Stakeholder Advisory Committee, Melbourne, Australia
| | - Miriam Lewis
- FOMOS Consumer and Stakeholder Advisory Committee, Melbourne, Australia
| | - Maria Apostolopoulos
- Institute for Physical Activity and Nutrition (IPAN), School of Exercise and Nutrition Sciences, Deakin University, Geelong, Australia
| | - Penelope Love
- Institute for Physical Activity and Nutrition (IPAN), School of Exercise and Nutrition Sciences, Deakin University, Geelong, Australia
| | - Anita Lal
- Deakin Health Economics, Institute for Health Transformation, Deakin University, Geelong, Australia
| | - Mats Hallgren
- Department of Public Health Sciences, Karolinska Institute, Sweden
| | - Sarah Costigan
- Institute for Physical Activity and Nutrition (IPAN), School of Exercise and Nutrition Sciences, Deakin University, Geelong, Australia
| | - Mitch J Duncan
- School of Medicine & Public Health, College of Health, Medicine, and Wellbeing, The University of Newcastle, Australia; Active Living Research Program, Hunter Medical Research Institute, New Lambton Heights, Australia
| | - Megan Teychenne
- Institute for Physical Activity and Nutrition (IPAN), School of Exercise and Nutrition Sciences, Deakin University, Geelong, Australia
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Isola D, Jawad ZAR, Chua E, Shorvon P, Martinez-Isla A. Traction-induced aneurysm of an accessory left hepatic artery: a potentially fatal but synchronously treatable complication of a large hiatus hernia. Ann R Coll Surg Engl 2022; 104:e174-e176. [PMID: 34982605 PMCID: PMC9157944 DOI: 10.1308/rcsann.2021.0249] [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] [Indexed: 11/22/2022] Open
Abstract
A 59-year-old man presented to our surgical clinic with a long-standing history of heart burn, and upper abdominal pain. Gastroscopy showed a large sliding hiatus hernia associated with severe reflux oesophagitis. Oesophageal pH manometry revealed a high DeMeester score of 36.03. A computed tomography (CT) scan was performed for preoperative hiatal hernia repair planning. This showed the incidental finding of an accessory left hepatic artery (ALHA) and an aneurysm of this accessory artery. The aneurysm occurred at the point where the ALHA traversed the diaphragmatic crus and was only present in association with the hiatus hernia. These observations suggest that the aetiology of the aneurysm was due to traction during development of the hiatus hernia. The patient went onto have a laparoscopic hiatus hernia repair and Toupet fundoplication with ligation of the accessory left hepatic artery and made an excellent recovery. ALHAs are not uncommon, occurring in around 15% of the general population, with aneurysms of the hepatic arteries accounting for about 20% of cases of visceral artery aneurysms. The case presented herein highlights the importance of performing an arterial phase CT when planning surgery for large hiatus hernias to detect more cases like this one. This would allow early detection and concurrent treatment of an associated aneurysm with repair of the hiatus hernia, to prevent aneurysmal complications later on.
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Affiliation(s)
- D Isola
- London North West University Healthcare NHS Trust, UK
| | - ZAR Jawad
- London North West University Healthcare NHS Trust, UK
| | - E Chua
- London North West University Healthcare NHS Trust, UK
| | - P Shorvon
- London North West University Healthcare NHS Trust, UK
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Chua E, Shah D. Uncommon Sites of Calcium Hydroxyapatite Deposition: The Forgotten Cause of Pain Syndromes Around the Hip. Semin Musculoskelet Radiol 2021. [DOI: 10.1055/s-0041-1731560] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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KAW M, Chua E, Chicano S, Villanueva A. SAT-407 OXFORD CLASSIFICATION AS A PREDICTOR OF RENAL PROGNOSIS IN IgA NEPHROPATHY PATIENTS AT THE NATIONAL KIDNEY AND TRANSPLANT INSTITUTE. Kidney Int Rep 2020. [DOI: 10.1016/j.ekir.2020.02.431] [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] Open
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Ginete-Garcia J, Chavez J, Chico J, Chua E, Danguilan R. ACUTE RESPIRATORY FAILURE WITH PULMONARY HEMORRHAGE DUE TO LEPTOSPIROSIS SUCCESSFULLY MANAGED BY EXTRACORPOREAL MEMBRANE OXYGENATION: THE FIRST IN THE PHILIPPINES. Chest 2019. [DOI: 10.1016/j.chest.2019.02.096] [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] Open
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Khin N, Peh W, Tham W, Lam W, Wang M, Siow T, Lim F, Tan D, Chin F, Chua E, Wang F, Ho S, Yip C. Biochemical and radiological inflammatory markers in oesophageal squamous cell carcinoma treated with radical chemoradiation. Ann Oncol 2018. [DOI: 10.1093/annonc/mdy151.039] [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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Aweid B, Miah R, Lakhani K, Belcher J, Musgrave R, Nallamuthu N, Shah N, Wang Q, Thum LP, Chua E. 26THE STARRS MODEL: VIRTUAL WARD ROUNDS LED BY GERIATRICIANS IN THE MANAGEMENT OF UNSCHEDULED HOSPITAL ADMISSIONS. A REVIEW AND COMPARISON OF ADMISSION AVOIDANCE RATES UNDER THIS MODEL IN HARROW AND BRENT. Age Ageing 2017. [DOI: 10.1093/ageing/afx055.26] [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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Gargya A, Chua E, Hetherington J, Sommer K, Cooper M. Acute adrenal insufficiency: an aide-memoire of the critical importance of its recognition and prevention. Intern Med J 2016; 46:356-9. [PMID: 26968598 DOI: 10.1111/imj.12998] [Citation(s) in RCA: 10] [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: 07/09/2015] [Revised: 11/14/2015] [Accepted: 12/16/2015] [Indexed: 11/27/2022]
Abstract
Adrenal crisis is a life-threatening emergency that causes significant excess mortality in patients with adrenal insufficiency. Delayed recognition by medical staff of an impending adrenal crisis and failure to give timely hydrocortisone therapy within the emergency department continue to be commonly encountered, even in metropolitan teaching hospitals. Within the authors' institutions, several cases of poorly handled adrenal crises have occurred over the last 2 years. Anecdotal accounts from members of the Addison's support group suggest that these issues are common in Australia. This manuscript is a timely reminder for clinical staff on the critical importance of the recognition, treatment and prevention of adrenal crisis. The manuscript: (i) outlines a case and the clinical outcome of sub-optimally managed adrenal crisis, (ii) summarises the clinical features and acute management of adrenal crisis, (iii) provides recommendations on the prevention of adrenal crisis and (iv) provides guidance on the management of 'sick days' in patients with adrenal insufficiency.
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Affiliation(s)
- A Gargya
- Department of Endocrinology, Royal Prince Alfred Hospital, University of New South Wales, Sydney, New South Wales, Australia
| | - E Chua
- Department of Endocrinology, Royal Prince Alfred Hospital, University of Sydney, Sydney, New South Wales, Australia
| | - J Hetherington
- Department of Endocrinology, Royal Prince Alfred Hospital, University of Sydney, Sydney, New South Wales, Australia
| | - K Sommer
- Department of Endocrinology, Concord Hospital, Sydney, New South Wales, Australia
| | - M Cooper
- Department of Endocrinology, Concord Hospital, University of Sydney, Sydney, New South Wales, Australia
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10
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Lam T, Chan MMK, Sweeting AN, De Sousa SMC, Clements A, Carlino MS, Long GV, Tonks K, Chua E, Kefford RF, Chipps DR. Ipilimumab-induced hypophysitis in melanoma patients: an Australian case series. Intern Med J 2016; 45:1066-73. [PMID: 26010858 DOI: 10.1111/imj.12819] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2015] [Accepted: 05/12/2015] [Indexed: 01/26/2023]
Abstract
BACKGROUND Ipilimumab (Yervoy; Bristol-Myers Squibb) is a novel fully humanised monoclonal antibody that blocks cytotoxic T-lymphocyte antigen 4, an immune checkpoint molecule, to augment anti-tumour T-cell responses. It is associated with significant immune-related side-effects including hypophysitis. AIM We reviewed the clinical and biochemical characteristics of 10 patients with ipilimumab-induced hypophysitis (IH), and developed guidelines for the early detection and management of IH based on our experiences at three major teaching hospitals in Sydney. METHODS All patients were evaluated at the Crown Princess Mary Cancer Centre and Department of Endocrinology, Westmead Hospital, Department of Endocrinology, Royal Prince Alfred Hospital, the Melanoma Institute Australia and Macarthur Cancer Therapy Centre, Campbelltown Hospital from 2010 to 2014. Relevant data were extracted by review of medical records. Main outcome measures included clinical features, hormone profile and radiological findings associated with IH, and presence of pituitary recovery. RESULTS Ten patients were identified with IH. In four patients who underwent monitoring of plasma cortisol, there was a fall in levels in the weeks prior to presentation. The pituitary-adrenal and pituitary-thyroid axes were affected in the majority of patients, with the need for physiological hormone replacement. Imaging abnormalities were identified in five of 10 patients, and resolved without high-dose glucocorticoid therapy. To date, all patients remain on levothyroxine and hydrocortisone replacement, where appropriate. CONCLUSIONS There is significant morbidity associated with development of IH. We suggest guidelines to assist with early recognition and therapeutic intervention.
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Affiliation(s)
- T Lam
- Department of Diabetes and Endocrinology, Crown Princess Mary Cancer Centre, Westmead Hospital, Sydney, New South Wales, Australia
| | - M M K Chan
- Department of Medical Oncology, Crown Princess Mary Cancer Centre, Westmead Hospital, Sydney, New South Wales, Australia.,Sydney Medical School, University of Sydney, Sydney, New South Wales, Australia.,Central Coast Cancer Centre, Gosford Hospital, Gosford, New South Wales, Australia
| | - A N Sweeting
- Sydney Medical School, University of Sydney, Sydney, New South Wales, Australia.,Department of Endocrinology, Royal Prince Alfred Hospital, Sydney, New South Wales, Australia
| | - S M C De Sousa
- Department of Endocrinology, St Vincent's Hospital, Sydney, New South Wales, Australia.,Hormones and Cancer Group, Garvan Institute of Medical Research, Sydney, New South Wales, Australia
| | - A Clements
- Department of Medical Oncology, Crown Princess Mary Cancer Centre, Westmead Hospital, Sydney, New South Wales, Australia.,Sydney Medical School, University of Sydney, Sydney, New South Wales, Australia
| | - M S Carlino
- Department of Medical Oncology, Crown Princess Mary Cancer Centre, Westmead Hospital, Sydney, New South Wales, Australia.,Sydney Medical School, University of Sydney, Sydney, New South Wales, Australia.,Melanoma Institute of Australia, Sydney, New South Wales, Australia
| | - G V Long
- Sydney Medical School, University of Sydney, Sydney, New South Wales, Australia.,Melanoma Institute of Australia, Sydney, New South Wales, Australia
| | - K Tonks
- Department of Endocrinology, St Vincent's Hospital, Sydney, New South Wales, Australia.,Diabetes and Metabolism Division, Garvan Institute of Medical Research, Sydney, New South Wales, Australia
| | - E Chua
- Sydney Medical School, University of Sydney, Sydney, New South Wales, Australia.,Department of Endocrinology, Royal Prince Alfred Hospital, Sydney, New South Wales, Australia
| | - R F Kefford
- Department of Medical Oncology, Crown Princess Mary Cancer Centre, Westmead Hospital, Sydney, New South Wales, Australia.,Sydney Medical School, University of Sydney, Sydney, New South Wales, Australia.,Melanoma Institute of Australia, Sydney, New South Wales, Australia.,Australian School of Advanced Medicine, Macquarie University, Sydney, New South Wales, Australia
| | - D R Chipps
- Department of Diabetes and Endocrinology, Crown Princess Mary Cancer Centre, Westmead Hospital, Sydney, New South Wales, Australia.,Sydney Medical School, University of Sydney, Sydney, New South Wales, Australia
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Porter A, Kennard D, Lang SJ, Levy S, Wang Q, Djedovic N, Chua E. 65ARE TOO MANY PATIENTS GREATER THAN 80 YEARS OLD WITH NON-VALVULAR ATRIAL FIBRILLATION EXPOSED TO UNDUE BLEEDING RISK FROM WARFARIN? Age Ageing 2016. [DOI: 10.1093/ageing/afw034.02] [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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Levy S, Porter A, Desai A, Nallamuthu N, Shah N, Swart E, Thum LP, Chua E. 26ADMISSION AVOIDANCE USING GERIATRICIAN LED VIRTUAL WARD ROUNDS IN A RAPID RESPONSE SERVICE: THE HARROW STARRS MODEL. Age Ageing 2016. [DOI: 10.1093/ageing/afw024.26] [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: 11/13/2022] Open
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Ellatif M, Kennard D, Duraisingham S, Chua E. A case of non-traumatic intramedullary spinal cord haemorrhage secondary to an arteriovenous malformation as a cause of painless myelopathy. Eur Geriatr Med 2015. [DOI: 10.1016/j.eurger.2015.05.001] [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: 10/23/2022]
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Au-Yeung S, Wang J, Chen Y, Chua E. P353: tDCS to primary motor area improves hand dexterity and selective attention in chronic stroke. Clin Neurophysiol 2014. [DOI: 10.1016/s1388-2457(14)50467-1] [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: 10/25/2022]
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Posadas Salas M, Taber D, Chua E, Pilch N, Chavin K, Thomas B. Critical analysis of valganciclovir dosing and renal function on the development of cytomegalovirus infection in kidney transplantation. Transpl Infect Dis 2013; 15:551-8. [DOI: 10.1111/tid.12133] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2012] [Revised: 12/27/2012] [Accepted: 03/17/2013] [Indexed: 01/14/2023]
Affiliation(s)
- M.A. Posadas Salas
- Department of Medicine; Division of Nephrology and Hypertension; Medical University of South Carolina; Charleston South Carolina USA
| | - D.J. Taber
- Division of Transplant Surgery; Medical University of South Carolina; Charleston South Carolina USA
| | - E. Chua
- Department of Medicine; Division of Nephrology and Hypertension; Medical University of South Carolina; Charleston South Carolina USA
| | - N. Pilch
- Department of Pharmacy Services; Medical University of South Carolina; Charleston South Carolina USA
| | - K. Chavin
- Division of Transplant Surgery; Medical University of South Carolina; Charleston South Carolina USA
| | - B. Thomas
- Department of Medicine; Division of Nephrology and Hypertension; Medical University of South Carolina; Charleston South Carolina USA
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Batool S, Wang Q, Qureshi S, Chua E. The red cell diameter width distribution, the forgotten haematological parameter for anaemia in the older person. Eur Geriatr Med 2013. [DOI: 10.1016/j.eurger.2012.02.001] [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: 12/23/2022]
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Lee CK, Wong HK, Ho PL, Tsoi WC, Lee KY, Tsui GTF, Chua E, Leung JNS, Lin CK. Significant bacterial contamination risk reduction with the use of diversion pouch. Transfus Med 2012; 22:404-8. [DOI: 10.1111/j.1365-3148.2012.01194.x] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2012] [Revised: 09/05/2012] [Accepted: 09/09/2012] [Indexed: 11/30/2022]
Affiliation(s)
- C. K. Lee
- Hong Kong Red Cross Blood Transfusion Service; Hong Kong; SAR; China
| | - H. K. Wong
- Hong Kong Red Cross Blood Transfusion Service; Hong Kong; SAR; China
| | - P. L. Ho
- Department of Microbiology; The University of Hong Kong; Hong Kong; SAR; China
| | - W. C. Tsoi
- Hong Kong Red Cross Blood Transfusion Service; Hong Kong; SAR; China
| | - K. Y. Lee
- Hong Kong Red Cross Blood Transfusion Service; Hong Kong; SAR; China
| | - G. T. F. Tsui
- Hong Kong Red Cross Blood Transfusion Service; Hong Kong; SAR; China
| | - E. Chua
- Hong Kong Red Cross Blood Transfusion Service; Hong Kong; SAR; China
| | - J. N. S. Leung
- Hong Kong Red Cross Blood Transfusion Service; Hong Kong; SAR; China
| | - C. K. Lin
- Hong Kong Red Cross Blood Transfusion Service; Hong Kong; SAR; China
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Tuan J, Ha T, Ong W, Siow T, Tham I, Yap S, Tan T, Chua E, Fong K, Wee J. PD-0295 LATE TOXICITIES IN 796 PATIENTS AFTER CONVENTIONAL RADIATION THERAPY ALONE FOR NASOPHARYNGEAL CARCINOMA. Radiother Oncol 2012. [DOI: 10.1016/s0167-8140(12)70634-5] [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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Birns J, Tzakas P, Chua E. Skin and nail pigmentation from long-term use of minocycline. Eur Geriatr Med 2012. [DOI: 10.1016/j.eurger.2011.11.006] [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: 11/17/2022]
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Tuan J, Ha T, Ong W, Siow T, Ng W, Tham I, Wang M, Chua E, Tan T. 7040 POSTER Treatment of Prostate Cancer With Intensity Modulated Radiation Therapy Using an Empty Bladder Protocol – Treatment Outcomes and Toxicity Profile. Eur J Cancer 2011. [DOI: 10.1016/s0959-8049(11)71991-8] [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: 10/17/2022]
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Sandhu SK, McKenzie P, Yu B, Chua E. Phaeochromocytoma, neurofibromatosis and gastrointestinal stromal tumour: just a random event? Intern Med J 2011; 41:212-3. [DOI: 10.1111/j.1445-5994.2010.02412.x] [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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Barker CA, Chang M, Lassman AB, Beal K, Chan TA, Hunter K, Grisdale K, Ritterhouse M, Moustakas A, Iwamoto FM, Kreisl TN, Sul J, Kim L, Butman J, Albert P, Fine HA, Chamberlain MC, Alexandru D, Glantz MJ, Kim L, Chamberlain MC, Bota DA, Takahashi K, Ikeda N, Kajimoto Y, Miyatake S, Kuroiwa T, Iwamoto F, Lamborn K, Kuhn J, Wen P, Yung WKA, Gilbert M, Chang S, Lieberman F, Prados M, Fine H, Lu-Emerson C, Norden AD, Drappatz J, Quant EC, Ciampa AS, Doherty LM, LaFrankie DC, Wen PY, Sherman JH, Moldovan K, Yeoh HK, Starke BM, Pouratian N, Shaffrey ME, Schiff D, O'Connor PC, Kroon HA, Recht L, Montano N, Cenci T, Martini M, D'Alessandris QG, Banna GL, Maira G, De Maria R, Larocca LM, Pallini R, Kim CH, Yang MS, Cheong JH, Kim JM, Shonka N, Gilbert M, Alfred Yung WK, Piao Y, Liu J, Bekele N, Wen P, Chen A, Heymach J, de Groot J, Gilbert MR, Wang M, Aldape K, Sorensen AG, Mikkelsen T, Bokstein F, Woo SY, Chmura SJ, Choucair AK, Mehta M, Perez Segura P, Gil M, Balana C, Chacon I, Munoz J, Martin M, Flowers A, Salner A, Gaziel TB, Soerensen M, Hasselbalch B, Poulsen HS, Lassen U, Peyre M, Cartalat-Carel S, Meyronet D, Sunyach MP, Jouanneau E, Guyotat J, Jouvet A, Frappaz D, Honnorat J, Ducray F, Wagle N, Nghiemphu PL, Lai A, Cloughesy TF, Kairouz VF, Elias EF, Chahine GY, Comair YG, Dimassi H, Kamar FG, Parchman AJ, Nock CJ, Bartolomeo J, Norden AD, Drappatz J, Ciampa AS, Doherty LM, LaFrankie DC, Ruland S, Quant EC, Beroukhim R, Wen PY, Graber JJ, Lassman AB, Kaley T, Johnson DR, Kimmel DW, Burch PA, Cascino TL, Giannini C, Wu W, Buckner JC, Dirier A, Abacioglu U, Okkan S, Pak Y, Guney YY, Aksu G, Soyuer S, Oksuzoglu B, Meydan D, Zincircioglu B, Yumuk PF, Alco G, Keven E, Ucer AR, Tsung AJ, Prabhu SS, Shonka NA, Alistar AT, van den Bent M, Taal W, Sleijfer S, van Heuvel I, Smitt PAS, Bromberg JE, Vernhout I, Porter AB, Dueck AC, Karlin NJ, Hiramatsu R, Kawabata S, Miyatake SI, Kuroiwa T, Easson MW, Vicente MGH, Sahebjam S, Garoufalis E, Guiot MC, Muanza T, Del Maestro R, Kavan P, Smolin AV, Konev A, Nikolaeva S, Shamanskaya Y, Malysheva A, Strelnikov V, Vranic A, Prestor B, Pizem J, Popovic M, Khatua S, Finlay J, Nelson M, Gonzalez I, Bruggers C, Dhall G, Fu BD, Linskey M, Bota D, Walbert T, Puduvalli V, Ozawa T, Brennan CW, Wang L, Squatrito M, Sasayama T, Nakada M, Huse JT, Pedraza A, Utsuki S, Tandon A, Fomchenko EI, Oka H, Levine RL, Fujii K, Ladanyi M, Holland EC, Raizer J, Avram MJ, Kaklamani V, Cianfrocca M, Gradishar W, Helenowski I, McCarthy K, Mulcahy M, Rademaker A, Grimm S, Landolfi JC, Chen S, Peeraully T, Anthony P, Linendoll NM, Zhu JJ, Yao K, Mignano J, Pfannl R, Pan E, Vera-Bolanos E, Armstrong TS, Bekele BN, Gilbert MR, Alexandru D, Glantz MJ, Kim L, Chamberlain MC, Bota DA, Albrecht V, Juerchott K, Selbig J, Tonn JC, Schichor C, Sawale KB, Wolff J, Vats T, Ketonen L, Khasraw M, Kaley T, Panageas K, Reiner A, Goldlust S, Tabar V, Green RM, Woyshner EA, Cloughesy TF, Abe T, Morishige M, Shiqi K, Momii Y, Sugita K, Fukuyoshi Y, Kamida T, Fujiki M, Kobayashi H, Lavon I, Refael M, Zrihan D, Siegal T, Elias EF, Kairouz VF, Chahine GY, Comair YG, Dimassi H, Kamar FG, Tham CK, See SJ, Toh CK, Kang SH, Park KJ, Kim CY, Yu MO, Park CK, Park SH, Chung YG, Park KJ, Yu MO, Kang SH, Cho TH, Chung YG, Sasaki H, Sano K, Nariai T, Uchino Y, Kitamura Y, Ohira T, Yoshida K, Kirson ED, Wasserman Y, Izhaki A, Mordechovich D, Gurvich Z, Dbaly V, Vymazal J, Tovarys F, Salzberg M, Rochlitz C, Goldsher D, Palti Y, Ram Z, Gutin PH, Furuse M, Miyatake SI, Kawabata S, Kuroiwa T, Torcuator RG, Ibaoc K, Rafael A, Mariano M, Reardon DA, Peters K, Desjardins A, Sampson J, Vredenburgh JJ, Gururangan S, Friedman HS, Le Rhun E, Kotecki N, Zairi F, Baranzelli MC, Faivre-Pierret M, Dubois F, Bonneterre J, Arenson EB, Arenson JD, Arenson PK, Pierick M, Jensen W, Smith DB, Wong ET, Gautam S, Malchow C, Lun M, Pan E, Brem S, Raizer J, Grimm S, Chandler J, Muro K, Rice L, McCarthy K, Mrugala M, Johnston SK, Chamberlain M, Marosi C, Handisurya A, Kautzky-Willer A, Preusser M, Elandt K, Widhalm G, Dieckmann K, Torcuator RG, Opinaldo P, Chua E, Barredo C, Cuanang J, Grimm S, Phuphanich S, Recht LD, Rosenfeld SS, Chamberlain MC, Zhu JJ, Fadul CE, Swabb EA, Pope C, Beelen AP, Raizer JJ, Kim IH, Park CK, Han JH, Lee SH, Kim CY, Kim TM, Kim DW, Kim JE, Paek SH, Kim IA, Kim YJ, Kim JH, Nam DH, Rhee CH, Lee SH, Park BJ, Kim DG, Heo DS, Jung HW, Desjardins A, Peters KB, Vredenburgh JJ, Friedman HS, Reardon DA, Becker K, Baehring J, Hammond SN, Norden AD, Fisher DC, Wong ET, Cote GM, Ciampa AS, Doherty LM, Ruland SF, LaFrankie DC, Wen PY, Drappatz J, Brandes AA, Franceschi E, Tosoni A, Poggi R, Agati R, Bartolini S, Spagnolli F, Pozzati E, Marucci G, Ermani M, Taillibert S, Guillevin R, Dehais C, Bellanger A, Delattre JY, Omuro A, Taillibert S, Hoang-Xuan K, Barrie M, Guiu S, Chauffert B, Cartalat-Carel S, Taillandier L, Fabbro M, Laigre M, Guillamo JS, Geffrelot J, Rouge TDLM, Bonnetain F, Chinot O, Gil MJ, de las Penas R, Reynes G, Balana C, Perez-Segura P, Garcia-Velasco A, Gallego O, Herrero A, de Lucas CFC, Benavides M, Perez-Martin X, Mesia C, Martinez-Garcia M, Muggeri AD, Cervio A, Rojas M, Arakaki N, Sevlever GE, Diez BD, Muggeri AD, Cerrato S, Martinetto H, Diez BD, Peereboom DM, Brewer CJ, Suh JH, Chao ST, Parsons MW, Elson PJ, Vogelbaum MA, Sade B, Barnett GH, Shonka NA, Yung WKA, Bekele N, Gilbert MR, Kobyakov G, Absalyamova O, Amanov R, Rauschkolb PK, Drappatz J, Batchelor TT, Meyer LP, Fadul CE, Lallana EC, Nghiemphu PL, Kohanteb P, Lai A, Green RM, Cloughesy TF, Mrugala MM, Lee LK, Graham CA, Fink JR, Spence AM, Portnow J, Badie B, Liu X, Frankel P, Chen M, Synold TW, Al Jishi AA, Golan J, Polley MYC, Lamborn KR, Chang SM, Butowski N, Clarke JL, Prados M, Grommes C, Oxnard GR, Kris MG, Miller VA, Pao W, Lassman AB, Renfrow J, DeTroye A, Chan M, Tatter S, Ellis T, McMullen K, Johnson A, Mott R, Lesser GJ, Cavaliere R, Abrey LE, Mason WP, Lassman AB, Perentesis J, Ivy P, Villalona M, Nayak L, Fleisher M, Gonzalez-Espinoza R, Reiner A, Panageas K, Lin O, Liu CM, Deangelis LM, Omuro A, Taylor LP, Ammirati M, Lamki T, Zarzour H, Grecula J, Dudley RW, Kavan P, Garoufalis E, Guiot MC, Del Maestro RF, Maurice C, Belanger K, Moumdjian R, Dufresne S, Fortin C, Fortin MA, Berthelet F, Renoult E, Belair M, Rouleau D, Gallego O, Benavides M, Segura PP, Balana C, Gil MJG, Berrocal A, Reynes G, Garcia JL, Mazarico J, Bague S. Medical and Neuro-Oncology. Neuro Oncol 2010. [DOI: 10.1093/neuonc/noq116.s6] [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: 11/13/2022] Open
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Wong F, Chua E. Hormone Receptors and HER-2 Status as Surrogates for Histological Subtypes Prognosticate for Disease Control in Node Negative Asian Breast Cancer Patients Treated with Breast Conservation Therapy. Int J Radiat Oncol Biol Phys 2009. [DOI: 10.1016/j.ijrobp.2009.07.427] [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: 10/20/2022]
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Lee C, Ho P, Lee K, Tsui G, Chua E, Tsoi W, Lin C. Value of anaerobic culture in bacterial surveillance program for platelet concentrates. Transfusion 2008; 48:2606-11. [DOI: 10.1111/j.1537-2995.2008.01887.x] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [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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Affiliation(s)
- E-K Tan
- Department of Neurology, Singapore General Hospital, Outram Road, Singapore 169608.
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Tan EK, Zhao Y, Skipper L, Tan MG, Di Fonzo A, Sun L, Fook-Chong S, Tang S, Chua E, Yuen Y, Tan L, Pavanni R, Wong MC, Kolatkar P, Lu CS, Bonifati V, Liu JJ. The LRRK2 Gly2385Arg variant is associated with Parkinson’s disease: genetic and functional evidence. Hum Genet 2006; 120:857-63. [PMID: 17019612 DOI: 10.1007/s00439-006-0268-0] [Citation(s) in RCA: 127] [Impact Index Per Article: 7.1] [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: 07/31/2006] [Accepted: 09/11/2006] [Indexed: 10/24/2022]
Abstract
Evidence of LRRK2 haplotypes associated with Parkinson's disease (PD) risk was recently found in the Chinese population from Singapore, and a common LRRK2 missense variant, Gly2385Arg, was independently detected as a putative risk factor for PD in the Chinese population from Taiwan. To test the association between the Gly2385Arg variant in a large case-control sample of Chinese ethnicity from Singapore, and to perform functional studies of the wild type and Gly2385Arg LRRK2 protein in human cell lines. In a case-control study involving 989 Chinese subjects, the frequency of the heterozygous Gly2385Arg genotype was higher in PD compared to controls (7.3 vs. 3.6%, odds ratio = 2.1, 95% CI: 1.1-3.9, P = 0.014); these values yield an estimated population attributable risk (PAR) of approximately 4%. In a multivariate logistic regression analysis with the disease group (PD vs. controls) as the dependent variable and the genotype as an independent factor with adjustments made for the effect of age and gender, the heterozygous Gly2385Arg genotype remained associated with an increased risk of PD compared to wild type genotype (odds ratio = 2.67, 95% CI: 1.43-4.99, P = 0.002). The glycine at position 2385 is a candidate site for N-myristoylation, and the Gly2385Arg variant replaces the hydrophobic glycine with the hydrophilic arginine, and increases the net positive charge of the LRRK2 WD40 domain. In transfection studies, we demonstrated that both the wild type and Gly2385Arg variant LRRK2 protein localize to the cytoplasm and form aggregates. However, under condition of oxidative stress, the Gly2385Arg variant was more toxic and associated with a higher rate of apoptosis. Our study lends support to the contention that the Gly2385Arg is a common risk factor for PD in the Chinese population. Our bioinformatics and in-vitro studies also suggest that the Gly2385Arg variant is biologically relevant and it might act through pro-apoptotic mechanisms.
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Affiliation(s)
- E K Tan
- Department of Neurology, Singapore General Hospital, Outram Road, Singapore, Singapore
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Tan EK, Lu ZY, Fook-Chong SMC, Tan E, Shen H, Chua E, Yih Y, Teo YY, Zhao Y. Exploring an interaction of adenosine A2A receptor variability with coffee and tea intake in Parkinson's disease. Am J Med Genet B Neuropsychiatr Genet 2006; 141B:634-6. [PMID: 16823803 DOI: 10.1002/ajmg.b.30359] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Caffeine is an adenosine receptor A1 and A2A receptor antagonist and a putative functional genetic variant of the A2A receptor (2592C > Tins) mediates caffeine-induced anxiety. Here we investigated the potential interaction of this A2A genetic variant with the quantity of coffee and tea intake and their relationship with the risk of PD. A total of 441 subjects consisting of 222 PD and 219 race, gender and age matched controls were included. A multivariate analysis of the variables including the 2592C > Tins A2A genotypes, age of onset, gender, and the quantity of tea and coffee intake, interaction of the A2A genotypes with coffee intake, interaction of A2A genotypes with tea intake demonstrated the quantity of coffee intake to be significantly associated with PD (P < 0.0005, OR = 0.922, 95% CI: 0.881, 0.964). However, there was no significant interaction of the A2A genotypes with the quantity of coffee and tea intake in modulating the risk of PD. The dose dependent protective effect of coffee intake in PD was independent of the 2592C > Tins A2A genotype suggesting that the pharmacogenetic action of caffeine in PD may be mediated differently from other caffeine-induced neurologic syndromes.
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Affiliation(s)
- E K Tan
- Department of Neurology, Singapore General Hospital, Singapore
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Lim SW, Zhao Y, Chua E, Law HY, Yuen Y, Pavanni R, Wong MC, Ng IS, Yoon CS, Puong KY, Lim SH, Tan EK. Genetic analysis of SCA2, 3 and 17 in idiopathic Parkinson's disease. Neurosci Lett 2006; 403:11-4. [PMID: 16687213 DOI: 10.1016/j.neulet.2006.04.019] [Citation(s) in RCA: 19] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2006] [Revised: 03/31/2006] [Accepted: 04/14/2006] [Indexed: 10/24/2022]
Abstract
Recent reports of SCA2 and SCA3 patients who presented with levodopa responsive parkinsonism have generated considerable interest as they have implications for genetic testing. It is unclear whether ethnic race alone or founder effects within certain geographical region explain such an association. In this study, we conducted genetic analysis of SCA2, 3, 17 in an ethnic Chinese cohort with early onset and familial Parkinson's disease (PD) and healthy controls. A total of 191 subjects comprising of 91 PD and 100 healthy controls were examined. We identified one positive case of SCA2 in an early-onset sporadic PD patient who had CAG 36 repeats, yielding a prevalence of 2.2% in early-onset sporadic PD patients and less than 1.0% in our study PD population. The size of the repeats was lower than the expanded repeats (38-57) in SCA2 patients with ataxia in our population. All the children of the patient were physically normal even though some of them carried the repeat expansion of similar size. No cases and controls were positive for SCA3 and SCA17. We do not think routine screening of SCA2, SCA3 and SCA17 for all idiopathic PD patients is cost-effective in our ethnic Chinese population. However, SCA2 should be a differential diagnosis in young onset sporadic PD when genetic mutations of other known PD genes have been excluded.
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Affiliation(s)
- S W Lim
- Department of Neurology, Singapore General Hospital, Outram Road, Singapore 169608, Singapore
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Tan EK, Yew K, Chua E, Shen H, Jamora RD, Lee E, Puong KY, Zhao Y, Pavanni R, Wong MC, Puvan K, Yih Y, Tan LCS. Analysis of PINK1 in Asian patients with familial parkinsonism. Clin Genet 2005; 68:468-70. [PMID: 16207217 DOI: 10.1111/j.1399-0004.2005.00500.x] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Skipper L, Shen H, Chua E, Bonnard C, Kolatkar P, Tan LCS, Jamora RD, Puvan K, Puong KY, Zhao Y, Pavanni R, Wong MC, Yuen Y, Farrer M, Liu JJ, Tan EK. Analysis of LRRK2 functional domains in nondominant Parkinson disease. Neurology 2005; 65:1319-21. [PMID: 16247070 DOI: 10.1212/01.wnl.0000180517.70572.37] [Citation(s) in RCA: 55] [Impact Index Per Article: 2.9] [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: 11/15/2022] Open
Abstract
A comprehensive sequence analysis of 29 exons that code for the functional domains of LRRK2 in 160 nondominant Parkinson disease (PD) patients was performed. Novel variant screening in a further 470 sporadic PD patients and 630 controls revealed two novel variants (R1067Q and IVS33 + 6 T>A), which are likely to be pathogenic in five patients. One patient presented initially with a typical essential tremor phenotype, expanding the phenotypic spectrum of LRRK2 mutations.
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Affiliation(s)
- L Skipper
- Department of Population Genetics, Genome Institute of Singapore, Singapore
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Tan EK, Shen H, Tan LCS, Farrer M, Yew K, Chua E, Jamora RD, Puvan K, Puong KY, Zhao Y, Pavanni R, Wong MC, Yih Y, Skipper L, Liu JJ. The G2019S LRRK2 mutation is uncommon in an Asian cohort of Parkinson's disease patients. Neurosci Lett 2005; 384:327-9. [PMID: 15955629 DOI: 10.1016/j.neulet.2005.04.103] [Citation(s) in RCA: 118] [Impact Index Per Article: 6.2] [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: 04/17/2005] [Accepted: 04/30/2005] [Indexed: 11/18/2022]
Abstract
A common heterozygous leucine-rich repeat kinase 2 (LRRK2) mutation 6055G > A transition (G2019S) accounts for about 3-7% of familial Parkinson's disease (PD) and 1-1.6% sporadic PD in a number of European populations. To determine the prevalence of the G1019S mutation in our Asian population, we conducted genetic analysis of this mutation in 1000 PD and healthy controls. The G2019S mutation was not detected in any of our study subjects. The prevalence of G2019S mutation is rare (< 0.1%) in our population, suggesting that occurrence of this mutation may vary amongst different ethnic races. This has important clinical implication when implementing guidelines for genetic testing.
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Affiliation(s)
- E K Tan
- Department of Neurology, Clinical Research and Health Screening, Singapore General Hospital, Outram Road, Singapore.
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Ang P, See H, Wong N, Wong Z, Wong C, Chua E, Tan P, Hoe G. P120 Ethnic differences in patients presenting at a more advanced stage of breast cancer in Singapore — a single institution experience. Breast 2005. [DOI: 10.1016/s0960-9776(05)80156-0] [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] Open
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Liu DP, Molyneaux L, Chua E, Wang YZ, Wu CR, Jing H, Hu LN, Liu YJ, Xu ZR, Yue DK. Retinopathy in a Chinese population with type 2 diabetes: factors affecting the presence of this complication at diagnosis of diabetes. Diabetes Res Clin Pract 2002; 56:125-31. [PMID: 11891020 DOI: 10.1016/s0168-8227(01)00349-7] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
This study examined the prevalence of retinopathy in 2131 patients with type 2 diabetes attending a Beijing hospital for the first time. The median age of patients was 58 years (IQR 50-65). The overall prevalence of retinopathy was 27.3% (95% CI: 25.4-29.2) and for proliferative retinopathy 7.8% (95% CI: 6.7-8.9). When all patients were considered together, duration of diabetes (OR=1.8; P=0.001) and albumin excretion rate (OR=1.5; P=0.019) were independent risk factors for retinopathy. Blue-collar occupation (OR=1.5; P=0.047) and blood pressure (OR=1.2; P=0.021) were additional risk factors for non-proliferative and proliferative retinopathy respectively. Amongst the 773 newly diagnosed patients, 21% (95% CI: 17.8-23.6) already had retinopathy. The median age of those patients with retinopathy at diagnosis of diabetes was 3 years higher that those without retinopathy, and blue-collar workers (OR=2.2; P=0.012) as well as female gender were particularly at risk (OR=2.0; P=0.033). There was a strong correlation between duration of diabetes with the presence of retinopathy (r=0.95; P=0.01). By extrapolation, it could be estimated that some degree of hyperglycaemia might have been present for more than 20 years before diabetes was diagnosed. These findings emphasise the importance of earlier diagnosis of diabetes and its complications, especially in socially disadvantaged groups.
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Affiliation(s)
- D P Liu
- Department of Endocrinology, Diabetes Centre, 306 Hospital of PLA, Beijing, PR China.
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Chua E, Gose E, Vinas FC, Dujovny M, Star J. Temperature distribution produced in brain tissue and other media by a radiofrequency hyperthermia generator. Stereotact Funct Neurosurg 2000; 72:22-34. [PMID: 10640918 DOI: 10.1159/000029669] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [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: 11/19/2022]
Abstract
The temperature distribution produced in living brain tissue by a radiofrequency, Neuro N-50, hyperthermia probe was measured as a function of probe temperature, heating duration, and distance from the heating probe by a sensor containing five thermocouples for durations up to 2 min. Brain sections were examined to determine the effects of heating at various temperatures. It was found that a simple theoretical conductive heat transfer model predicted the steady-state temperature distributions quite well. At distances up to 7.4 mm from the heating probe, a heating time of 20 s was sufficient to produce about 90% of the temperature rise measured at 120 s. The equilibrium temperature at any distance from the center of the probe was a linear function of the reciprocal of this distance. The time constant for heating was approximately 3 s at 0. 95 mm from the heating probe and about 10 s at 7.4 mm for brain tissue, while these values are about 5-20 s in egg white. For a given probe size, higher probe temperatures increased the size of the region of cell death. According to the heat transfer model, the diameter of the region of tissue that attains a given temperature is proportional to the diameter of the probe. The use of probe temperatures up to 90 degrees C would enable an increase in the volume of the region of cell death, or the use of a smaller diameter probe to produce a lesion of a given size.
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Affiliation(s)
- E Chua
- Department of Engineering and Computer Science, Wayne State University, Detroit, MI 48201, USA
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Abstract
PRESENTATION An elderly man had recurrent hospital admissions with falls. OUTCOME Acetylcholine receptor antibodies and single-fibre electromyogram were useful in the diagnosis of myasthenia gravis. Treatment prevented further hospital admissions.
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Affiliation(s)
- E Chua
- Department of Medicine for the Elderly, University Hospital Aintree, Liverpool, UK
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Abstract
The most common cause of anaemia in the elderly is anaemia of chronic disease (ACD). However, iron deficiency anaemia (IDA) may coexist, and can be difficult to diagnose. The serum transferrin receptor (sTfR) blood test may be a better indicator of iron status as it is not affected by inflammation nor by advancing age. We evaluated it in four groups (10 males, 10 females each): 'young' controls, 'elderly' controls, IDA and ACD. All patients in the IDA group had elevated sTfR levels (mean +/- SD 65.2 +/- 17.7 nmol/l). All 'young' controls had normal sTfR (22.3 +/- 7.3 nmol/l) and ferritin levels (92.7 +/- 61.1 micrograms/l). Although all subjects in the 'elderly' controls and ACD group had normal, and raised or normal serum ferritin, respectively (88 +/- 62.3 micrograms/l; 631.2 +/- 509.5 micrograms/l), three (15%) 'elderly' controls and four (20%) ACD patients had raised sTfR levels, suggesting depleted iron stores. Bone-marrow aspirates were available in 3/4 ACD patients with raised sTfR. Haemosiderin was absent in two. The sTfR blood test is comparable to serum ferritin in diagnosing IDA in the elderly but also seems capable of differentiating ACD from IDA. Its potential as a non-invasive test of iron status, especially in elderly anaemic patients, deserves further evaluation.
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Affiliation(s)
- E Chua
- Department of Geriatric Medicine, University Hospital, Aintree, Liverpool, UK
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Chua E, Wang Q, O'toole P, Lombard M. A method for examining differential mRNA expression along the crypt-villus axis of the human small intestine. Clin Sci (Lond) 1998; 95:171-7. [PMID: 9680499] [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: 02/08/2023]
Abstract
1. The aim of this study was to devise a method of segregating crypt and villus cell subpopulations from endoscopic human small intestinal biopsies which might be used to examine changes associated with functional differentiation at the molecular level. 2. Routine endoscopic biopsies from the human small intestine were subjected to a modified protocol of mechanical disruption and chelation to yield subpopulations of different cell types. The purity and character of the cell populations isolated was assessed by measuring enzyme activity and thymidine incorporation and by histology. A guanidinium isothiocyanate method was adapted for small samples to extract RNA from the isolated subpopulations, and probes for RNA with a known predilection for crypt and villus cells were used to further investigate the application and usefulness of the technique. 3. Sequential histological examination during the segregation protocol demonstrated that different cell types were removed serially from the biopsy samples. Cell-type enrichment of the segregated subpopulations was demonstrated by differential alkaline phosphatase activity and by differences in thymidine incorporation in the samples isolated. Sufficient quantities of RNA could be extracted from the segregated subpopulations for Northern blot analysis and the differential expression of mRNA for sucrase-isomaltase and transferrin receptor was demonstrated in the villus and crypt subpopulations respectively. 4. Messenger RNA can be successfully extracted from different cell types segregated from routine human endoscopic small intestinal biopsies. This technique should prove useful for investigating the mechanisms regulating the functional differentiation of epithelial cells in the small intestine and the regulatory mechanisms governing absorption of macromolecules.
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Affiliation(s)
- E Chua
- Department of Medicine, University of Liverpool, Liverpool L69 3BX, U.K
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Chua E, Watkins C, Jack C, Sharma AK. The Effect of Age and Hypertension on Primary Intracerebral Haemorrhage (PICH). Age Ageing 1998. [DOI: 10.1093/ageing/27.suppl_1.p71-b] [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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Chua E, Lye M, Lombard M. Quantification of Mucosal Transferrin Receptor (TFR) Mrna Expression Along the Crypt-Villus Axis of the Rat Intestinal Mucosa. Age Ageing 1998. [DOI: 10.1093/ageing/27.suppl_2.30-c] [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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Affiliation(s)
- M Lombard
- Department of Medicine, University of Liverpool
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Affiliation(s)
- E Chua
- Department of Radiology, Royal Liverpool University Hospital, UK
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Dwarakanath AD, Chua E, Rhodes JM, Hershman MJ. Inspecting the Colon from inside and Out to Solve Pyrexia of Unknown Origin. Med Chir Trans 1995; 88:661P-662P. [PMID: 8544155 PMCID: PMC1295394 DOI: 10.1177/014107689508801115] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
A man with longstanding intermittent symptoms of abdominal pain, diarrhoea and pyrexia of unknown origin was diagnosed with the novel technique of laparoscopic-assisted colonoscopy. At subsequent laparotomy, a longstanding perforation of sigmoid diverticular disease was resected, with resolution of his symptoms.
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Ngim RC, Chua E, Lee ST. Speech and nasendoscopic evaluation of velopharyngeal incompetence (VPI) in cleft palate patients. Ann Acad Med Singap 1988; 17:380-3. [PMID: 3218928] [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] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Cleft lip and palate patients exhibit several problems prior to and following surgical repair of their deformities. Hypernasality and speech defects remain one of the outstanding problems. 82 cleft palate patients were subjected to a systematised speech evaluation and an examination of the velopharyngeal mechanism. Nineteen patients did not have any surgery of the palate whilst the remaining 63 had at least one surgical procedure to the palate. 54 had a Veau-Wardill-Kilner (V-W-K) procedure and the remaining had either a second palatal repair or a superiorly based pharyngoplasty. Good correlation of speech assessment to nasendoscopic evaluation was found. An improvement in the speech and nasendoscopic coding was found in patients who had surgical intervention to the palate. A nasendoscopic examination, ideally performed by the surgeon and a speech therapist, is a useful adjunct to speech evaluation.
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Affiliation(s)
- R C Ngim
- Department of Rehabilitation Medicine, Singapore General Hospital
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Roberts BW, Chua E. Refugees from Indochina. Ann Intern Med 1980; 92:266. [PMID: 7352745] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/24/2023] Open
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