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Ho G, Gill M, Grant-Kels J, Schwartz RJ, Pellacani G, Gonzalez S, Alessi-Fox C, Guitera P. International expert recommendations on image acquisition for in vivo reflectance confocal microscopy of cutaneous tumors. J Am Acad Dermatol 2024; 90:537-544. [PMID: 37898340 DOI: 10.1016/j.jaad.2023.09.086] [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: 06/19/2023] [Revised: 09/24/2023] [Accepted: 09/26/2023] [Indexed: 10/30/2023]
Abstract
BACKGROUND No international recommendations exist for a minimum imaging requirement per lesion using reflectance confocal microscopy (RCM). This may be beneficial given the increasing use of remote RCM interpretation internationally. OBJECTIVE To develop international expert recommendations for image acquisition using tissue-coupled RCM for diagnosis of cutaneous tumors. METHODS Using a modified Delphi approach, a core group developed the scope and drafted initial recommendations before circulation to a larger group, the Cutaneous Imaging Expert Resource Group of the American Academy of Dermatology. Each review round consisted of a period of open comment, followed by revisions. RESULTS The recommendations were developed after 5 alternating rounds of review among the core group and the Cutaneous Imaging Expert Resource Group. These were divided into subsections of imaging personnel, recommended lesion criteria, clinical and lesion information to be provided, lesion preparation, image acquisition, mosaic cube settings, and additional captures based on lesion characteristics and suspected diagnosis. LIMITATIONS The current recommendations are limited to tissue-coupled RCM for diagnosis of cutaneous tumors. It is one component of the larger picture of quality assurance and will require ongoing review. CONCLUSIONS These recommendations serve as a resource to facilitate quality assurance, economical use of time, accurate diagnosis, and international collaboration.
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Affiliation(s)
- Genevieve Ho
- Melanoma Institute Australia, Sydney, Australia; Faculty of Medicine and Health, University of Sydney, Sydney, Australia; Faculty of Medicine and Health, University of New South Wales, Sydney, Australia.
| | - Melissa Gill
- Department of Pathology, State University of New York Downstate Medical Center, New York, New York; Department of Clinical Pathology and Cancer Diagnostics, Karolinska University Hospital Solna, Stockholm, Sweden
| | - Jane Grant-Kels
- Department of Dermatology, University of Connecticut School of Medicine, Farmington, Connecticut; Department of Dermatology, University of Florida College of Medicine, Gainesville, Florida
| | - Rodrigo J Schwartz
- Melanoma Institute Australia, Sydney, Australia; Department of Dermatology, Faculty of Medicine, University of Chile, Santiago, Chile
| | | | - Salvador Gonzalez
- Department of Medicine and Medical Specialities, University of Alcalá de Henares, Madrid, Spain
| | | | - Pascale Guitera
- Melanoma Institute Australia, Sydney, Australia; Faculty of Medicine and Health, University of Sydney, Sydney, Australia; Sydney Melanoma Diagnostic Centre, Royal Prince Alfred Hospital, Sydney Australia
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2
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Menzies SW, Sinz C, Menzies M, Lo SN, Yolland W, Lingohr J, Razmara M, Tschandl P, Guitera P, Scolyer RA, Boltz F, Borik-Heil L, Herbert Chan H, Chromy D, Coker DJ, Collgros H, Eghtedari M, Corral Forteza M, Forward E, Gallo B, Geisler S, Gibson M, Hampel A, Ho G, Junez L, Kienzl P, Martin A, Moloney FJ, Regio Pereira A, Ressler JM, Richter S, Silic K, Silly T, Skoll M, Tittes J, Weber P, Weninger W, Weiss D, Woo-Sampson P, Zilberg C, Kittler H. Comparison of humans versus mobile phone-powered artificial intelligence for the diagnosis and management of pigmented skin cancer in secondary care: a multicentre, prospective, diagnostic, clinical trial. Lancet Digit Health 2023; 5:e679-e691. [PMID: 37775188 DOI: 10.1016/s2589-7500(23)00130-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2022] [Revised: 06/27/2023] [Accepted: 07/06/2023] [Indexed: 10/01/2023]
Abstract
BACKGROUND Diagnosis of skin cancer requires medical expertise, which is scarce. Mobile phone-powered artificial intelligence (AI) could aid diagnosis, but it is unclear how this technology performs in a clinical scenario. Our primary aim was to test in the clinic whether there was equivalence between AI algorithms and clinicians for the diagnosis and management of pigmented skin lesions. METHODS In this multicentre, prospective, diagnostic, clinical trial, we included specialist and novice clinicians and patients from two tertiary referral centres in Australia and Austria. Specialists had a specialist medical qualification related to diagnosing and managing pigmented skin lesions, whereas novices were dermatology junior doctors or registrars in trainee positions who had experience in examining and managing these lesions. Eligible patients were aged 18-99 years and had a modified Fitzpatrick I-III skin type; those in the diagnostic trial were undergoing routine excision or biopsy of one or more suspicious pigmented skin lesions bigger than 3 mm in the longest diameter, and those in the management trial had baseline total-body photographs taken within 1-4 years. We used two mobile phone-powered AI instruments incorporating a simple optical attachment: a new 7-class AI algorithm and the International Skin Imaging Collaboration (ISIC) AI algorithm, which was previously tested in a large online reader study. The reference standard for excised lesions in the diagnostic trial was histopathological examination; in the management trial, the reference standard was a descending hierarchy based on histopathological examination, comparison of baseline total-body photographs, digital monitoring, and telediagnosis. The main outcome of this study was to compare the accuracy of expert and novice diagnostic and management decisions with the two AI instruments. Possible decisions in the management trial were dismissal, biopsy, or 3-month monitoring. Decisions to monitor were considered equivalent to dismissal (scenario A) or biopsy of malignant lesions (scenario B). The trial was registered at the Australian New Zealand Clinical Trials Registry ACTRN12620000695909 (Universal trial number U1111-1251-8995). FINDINGS The diagnostic study included 172 suspicious pigmented lesions (84 malignant) from 124 patients and the management study included 5696 pigmented lesions (18 malignant) from the whole body of 66 high-risk patients. The diagnoses of the 7-class AI algorithm were equivalent to the specialists' diagnoses (absolute accuracy difference 1·2% [95% CI -6·9 to 9·2]) and significantly superior to the novices' ones (21·5% [13·1 to 30·0]). The diagnoses of the ISIC AI algorithm were significantly inferior to the specialists' diagnoses (-11·6% [-20·3 to -3·0]) but significantly superior to the novices' ones (8·7% [-0·5 to 18·0]). The best 7-class management AI was significantly inferior to specialists' management (absolute accuracy difference in correct management decision -0·5% [95% CI -0·7 to -0·2] in scenario A and -0·4% [-0·8 to -0·05] in scenario B). Compared with the novices' management, the 7-class management AI was significantly inferior (-0·4% [-0·6 to -0·2]) in scenario A but significantly superior (0·4% [0·0 to 0·9]) in scenario B. INTERPRETATION The mobile phone-powered AI technology is simple, practical, and accurate for the diagnosis of suspicious pigmented skin cancer in patients presenting to a specialist setting, although its usage for management decisions requires more careful execution. An AI algorithm that was superior in experimental studies was significantly inferior to specialists in a real-world scenario, suggesting that caution is needed when extrapolating results of experimental studies to clinical practice. FUNDING MetaOptima Technology.
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Affiliation(s)
- Scott W Menzies
- Faculty of Medicine and Health, Sydney Medical School, The University of Sydney, Sydney, NSW, Australia; Sydney Melanoma Diagnostic Centre, Royal Prince Alfred Hospital, Camperdown, NSW, Australia.
| | - Christoph Sinz
- Melanoma Institute Australia, The University of Sydney, Sydney, NSW, Australia; Department of Dermatology, Medical University of Vienna, Vienna, Austria
| | - Michelle Menzies
- Sydney Melanoma Diagnostic Centre, Royal Prince Alfred Hospital, Camperdown, NSW, Australia; Skintography, Sydney, NSW, Australia
| | - Serigne N Lo
- Faculty of Medicine and Health, Sydney Medical School, The University of Sydney, Sydney, NSW, Australia; Melanoma Institute Australia, The University of Sydney, Sydney, NSW, Australia
| | | | | | | | - Philipp Tschandl
- Department of Dermatology, Medical University of Vienna, Vienna, Austria
| | - Pascale Guitera
- Faculty of Medicine and Health, Sydney Medical School, The University of Sydney, Sydney, NSW, Australia; Melanoma Institute Australia, The University of Sydney, Sydney, NSW, Australia; Sydney Melanoma Diagnostic Centre, Royal Prince Alfred Hospital, Camperdown, NSW, Australia
| | - Richard A Scolyer
- Faculty of Medicine and Health, Sydney Medical School, The University of Sydney, Sydney, NSW, Australia; Melanoma Institute Australia, The University of Sydney, Sydney, NSW, Australia; Charles Perkins Centre, The University of Sydney, Sydney, NSW, Australia; Tissue Pathology and Diagnostic Oncology, Royal Prince Alfred Hospital and NSW Health Pathology, Sydney, NSW, Australia
| | - Florentina Boltz
- Department of Dermatology, Medical University of Vienna, Vienna, Austria
| | - Liliane Borik-Heil
- Department of Dermatology, Medical University of Vienna, Vienna, Austria
| | - Hsien Herbert Chan
- Department of Dermatology, Royal Prince Alfred Hospital, Camperdown, NSW, Australia
| | - David Chromy
- Department of Dermatology, Medical University of Vienna, Vienna, Austria
| | - David J Coker
- Faculty of Medicine and Health, Sydney Medical School, The University of Sydney, Sydney, NSW, Australia; Melanoma Institute Australia, The University of Sydney, Sydney, NSW, Australia; Department of Melanoma and Surgical Oncology, Royal Prince Alfred Hospital, Camperdown, NSW, Australia
| | - Helena Collgros
- Faculty of Medicine and Health, Sydney Medical School, The University of Sydney, Sydney, NSW, Australia; Sydney Melanoma Diagnostic Centre, Royal Prince Alfred Hospital, Camperdown, NSW, Australia
| | - Maryam Eghtedari
- Department of Dermatology, Royal Prince Alfred Hospital, Camperdown, NSW, Australia
| | - Marina Corral Forteza
- Sydney Melanoma Diagnostic Centre, Royal Prince Alfred Hospital, Camperdown, NSW, Australia
| | - Emily Forward
- Department of Dermatology, Royal Prince Alfred Hospital, Camperdown, NSW, Australia
| | - Bruna Gallo
- Melanoma Institute Australia, The University of Sydney, Sydney, NSW, Australia; Sydney Melanoma Diagnostic Centre, Royal Prince Alfred Hospital, Camperdown, NSW, Australia
| | - Stephanie Geisler
- Department of Dermatology, Medical University of Vienna, Vienna, Austria
| | - Matthew Gibson
- Faculty of Medicine and Health, Sydney Medical School, The University of Sydney, Sydney, NSW, Australia; Department of Dermatology, Royal Prince Alfred Hospital, Camperdown, NSW, Australia
| | - Amelie Hampel
- Department of Dermatology, Medical University of Vienna, Vienna, Austria
| | - Genevieve Ho
- Faculty of Medicine and Health, Sydney Medical School, The University of Sydney, Sydney, NSW, Australia; Melanoma Institute Australia, The University of Sydney, Sydney, NSW, Australia; Department of Dermatology, Royal Prince Alfred Hospital, Camperdown, NSW, Australia
| | - Laura Junez
- Department of Dermatology, Medical University of Vienna, Vienna, Austria
| | - Philipp Kienzl
- Department of Dermatology, Medical University of Vienna, Vienna, Austria
| | - Arthur Martin
- Melanoma Institute Australia, The University of Sydney, Sydney, NSW, Australia
| | - Fergal J Moloney
- Melanoma Institute Australia, The University of Sydney, Sydney, NSW, Australia; Sydney Melanoma Diagnostic Centre, Royal Prince Alfred Hospital, Camperdown, NSW, Australia
| | - Amanda Regio Pereira
- Faculty of Medicine and Health, Sydney Medical School, The University of Sydney, Sydney, NSW, Australia; Sydney Melanoma Diagnostic Centre, Royal Prince Alfred Hospital, Camperdown, NSW, Australia
| | | | - Susanne Richter
- Department of Dermatology, Medical University of Vienna, Vienna, Austria
| | - Katharina Silic
- Department of Dermatology, Medical University of Vienna, Vienna, Austria
| | - Thomas Silly
- Department of Dermatology, Medical University of Vienna, Vienna, Austria
| | - Michael Skoll
- Department of Dermatology, Medical University of Vienna, Vienna, Austria
| | - Julia Tittes
- Department of Dermatology, Medical University of Vienna, Vienna, Austria
| | - Philipp Weber
- Department of Dermatology, Medical University of Vienna, Vienna, Austria
| | - Wolfgang Weninger
- Department of Dermatology, Medical University of Vienna, Vienna, Austria
| | - Doris Weiss
- Department of Dermatology, Medical University of Vienna, Vienna, Austria
| | - Ping Woo-Sampson
- Sydney Melanoma Diagnostic Centre, Royal Prince Alfred Hospital, Camperdown, NSW, Australia
| | - Catherine Zilberg
- Department of Dermatology, Royal Prince Alfred Hospital, Camperdown, NSW, Australia
| | - Harald Kittler
- Department of Dermatology, Medical University of Vienna, Vienna, Austria
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Schwartz RJ, Ho G, Gouveia BM, Martin LK, Guitera P. An adapter window for precise skin marking during handheld reflectance confocal microscopic scanning. J Am Acad Dermatol 2023; 89:e125-e126. [PMID: 35085680 DOI: 10.1016/j.jaad.2021.11.064] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2021] [Revised: 11/06/2021] [Accepted: 11/25/2021] [Indexed: 10/19/2022]
Affiliation(s)
- Rodrigo J Schwartz
- Melanoma Institute Australia, The University of Sydney, Sydney, Australia; Department of Dermatology, University of Chile, Santiago, Chile.
| | - Genevieve Ho
- Melanoma Institute Australia, The University of Sydney, Sydney, Australia; Faculty of Medicine and Health, University of New South Wales, Sydney, Australia
| | | | - Linda K Martin
- Melanoma Institute Australia, The University of Sydney, Sydney, Australia; Faculty of Medicine and Health, University of New South Wales, Sydney, Australia
| | - Pascale Guitera
- Melanoma Institute Australia, The University of Sydney, Sydney, Australia; Faculty of Medicine and Health, University of New South Wales, Sydney, Australia; Sydney Melanoma Diagnostic Centre, Royal Prince Alfred Hospital, Sydney, Australia
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4
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Cowan TL, Ho G, Daniel BS, Murrell DF. Use of a hybrid teledermatology model in an Australian tertiary hospital during the COVID-19 pandemic. JAAD Int 2023; 11:33-34. [PMID: 35474879 PMCID: PMC9023319 DOI: 10.1016/j.jdin.2022.03.016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2022] [Revised: 03/21/2022] [Accepted: 03/31/2022] [Indexed: 11/25/2022] Open
Affiliation(s)
- Timothy L. Cowan
- Department of Dermatology, St George Hospital, Kogarah NSW, Australia,Faculty of Medicine, University of New South Wales, Sydney NSW, Australia
| | - Genevieve Ho
- Department of Dermatology, St George Hospital, Kogarah NSW, Australia,Faculty of Medicine, University of New South Wales, Sydney NSW, Australia,Faculty of Medicine and Health, University of Sydney, Sydney NSW, Australia
| | - Benjamin S. Daniel
- Department of Dermatology, St George Hospital, Kogarah NSW, Australia,Faculty of Medicine, University of New South Wales, Sydney NSW, Australia,Department of Dermatology, St Vincent’s Hospital, Melbourne VIC, Australia
| | - Dedee F. Murrell
- Department of Dermatology, St George Hospital, Kogarah NSW, Australia,Faculty of Medicine, University of New South Wales, Sydney NSW, Australia,Correspondence to: Dedee F. Murrell, MA, BMBCh, MD, DSc, 17 Kensington Street, Kogarah, NSW, Australia
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5
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Ho G, Kubušová V, Irabien C, Li V, Weinstein A, Chawla S, Yeung D, Mershin A, Zolotovsky K, Mogas-Soldevila L. Multiscale design of cell-free biologically active architectural structures. Front Bioeng Biotechnol 2023; 11:1125156. [PMID: 37064226 PMCID: PMC10100494 DOI: 10.3389/fbioe.2023.1125156] [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: 12/15/2022] [Accepted: 02/27/2023] [Indexed: 03/30/2023] Open
Abstract
Cell-free protein expression systems are here combined with 3D-printed structures to study the challenges and opportunities as biofabrication enters the spaces of architecture and design. Harnessing large-scale additive manufacturing of biological materials, we examined the addition of cell-free protein expression systems ("TXTL" i.e., biological transcription-translation machinery without the use of living cells) to printed structures. This allowed us to consider programmable, living-like, responsive systems for product design and indoor architectural applications. This emergent, pluripotent technology offers exciting potential in support of health, resource optimization, and reduction of energy use in the built environment, setting a new path to interactivity with mechanical, optical, and (bio) chemical properties throughout structures. We propose a roadmap towards creating healthier, functional and more durable systems by deploying a multiscale platform containing biologically-active components encapsulated within biopolymer lattices operating at three design scales: (i) supporting cell-free protein expression in a biopolymer matrix (microscale), (ii) varying material properties of porosity and strength within two-dimensional lattices to support biological and structural functions (mesoscale), and (iii) obtaining folded indoor surfaces that are structurally sound at the meter scale and biologically active (we label that regime macroscale). We embedded commercially available cell-free protein expression systems within silk fibroin and sodium alginate biopolymer matrices and used green fluorescent protein as the reporter to confirm their compatibility. We demonstrate mechanical attachment of freeze-dried bioactive pellets into printed foldable fibrous biopolymer lattices showing the first steps towards modular multiscale fabrication of large structures with biologically active zones. Our results discuss challenges to experimental setup affecting expression levels and show the potential of robust cell-free protein-expressing biosites within custom-printed structures at scales relevant to everyday consumer products and human habitats.
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Affiliation(s)
- G. Ho
- Department of Bioengineering, University of Pennsylvania, Philadelphia, PA, United States
| | - V. Kubušová
- Department of Graduate Architecture, DumoLab Research, Stuart Weitzman School of Design, University of Pennsylvania, Philadelphia, PA, United States
- Department of Architecture and Design, Slovak University of Technology, Bratislava, Slovakia
| | - C. Irabien
- Department of Graduate Architecture, DumoLab Research, Stuart Weitzman School of Design, University of Pennsylvania, Philadelphia, PA, United States
| | - V. Li
- Department of Graduate Architecture, DumoLab Research, Stuart Weitzman School of Design, University of Pennsylvania, Philadelphia, PA, United States
| | - A. Weinstein
- Department of Graduate Architecture, DumoLab Research, Stuart Weitzman School of Design, University of Pennsylvania, Philadelphia, PA, United States
| | - Sh. Chawla
- Department of Graduate Architecture, DumoLab Research, Stuart Weitzman School of Design, University of Pennsylvania, Philadelphia, PA, United States
| | - D. Yeung
- Department of Graduate Architecture, DumoLab Research, Stuart Weitzman School of Design, University of Pennsylvania, Philadelphia, PA, United States
| | - A. Mershin
- Label Free Research Group, Center for Bits and Atoms, Massachusetts Institute of Technology, Cambridge, MA, United States
| | - K. Zolotovsky
- Spatial Dynamics Program, Division of Experimental and Foundational Studies, Rhode Island School of Design, Providence, RI, United States
| | - L. Mogas-Soldevila
- Department of Graduate Architecture, DumoLab Research, Stuart Weitzman School of Design, University of Pennsylvania, Philadelphia, PA, United States
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Ho G, Smith A, Cust AE, Melhoranse-Gouveia B, Collgros H, Martin L, Guitera P. Reflectance confocal microscopy in Australia: Perspectives on barriers to implementation and uptake. Australas J Dermatol 2023; 64:e109-e111. [PMID: 36412240 DOI: 10.1111/ajd.13954] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2022] [Revised: 10/25/2022] [Accepted: 10/30/2022] [Indexed: 11/23/2022]
Affiliation(s)
- Genevieve Ho
- Melanoma Institute Australia, The University of Sydney, North Sydney, New South Wales, Australia.,Faculty of Medicine and Health, University of Sydney, Australia.,Faculty of Medicine, University of New South Wales, New South Wales, Sydney, Australia
| | - Andrea Smith
- The Daffodil Centre, The University of Sydney, a joint venture with Cancer Council NSW, Sydney, New South Wales, Australia
| | - Anne E Cust
- Melanoma Institute Australia, The University of Sydney, North Sydney, New South Wales, Australia.,The Daffodil Centre, The University of Sydney, a joint venture with Cancer Council NSW, Sydney, New South Wales, Australia
| | - Bruna Melhoranse-Gouveia
- Melanoma Institute Australia, The University of Sydney, North Sydney, New South Wales, Australia.,Faculty of Medicine and Health, University of Sydney, Australia
| | - Helena Collgros
- Faculty of Medicine and Health, University of Sydney, Australia.,Sydney Melanoma Diagnostic Centre, Royal Prince Alfred Hospital, New South Wales, Sydney, Australia
| | - Linda Martin
- Melanoma Institute Australia, The University of Sydney, North Sydney, New South Wales, Australia.,Faculty of Medicine, University of New South Wales, New South Wales, Sydney, Australia
| | - Pascale Guitera
- Melanoma Institute Australia, The University of Sydney, North Sydney, New South Wales, Australia.,Faculty of Medicine and Health, University of Sydney, Australia.,Sydney Melanoma Diagnostic Centre, Royal Prince Alfred Hospital, New South Wales, Sydney, Australia
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7
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Ho G, Schwartz RJ, Melhoranse‐Gouveia B, Guitera P, O'Sullivan NA, Cheung VKY, Ch'ng S, Martin LK. Utility of optical coherence tomography in basal cell naevus syndrome: A case report. Australas J Dermatol 2022; 63:e331-e335. [PMID: 36125195 PMCID: PMC9826408 DOI: 10.1111/ajd.13921] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2022] [Revised: 08/17/2022] [Accepted: 08/22/2022] [Indexed: 01/11/2023]
Abstract
Optical Coherence Tomography (OCT) is a useful non-invasive diagnostic tool for diagnosing and monitoring treatment of basal cell carcinomas. We describe the use of OCT in a patient with Basal Cell Naevus Syndrome. Through measuring tumour depth on OCT, management of individual tumours was triaged accordingly using 0.4 mm tumour depth as a cut-off for surgical and non-surgical management. OCT has potential to reduce unnecessary excisions and associated morbidity in this population of patients.
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Affiliation(s)
- Genevieve Ho
- Melanoma Institute AustraliaSydneyNew South WalesAustralia,Faculty of Medicine and HealthUniversity of SydneySydneyNew South WalesAustralia,Faculty of Medicine and HealthUniversity of New South WalesSydneyNew South WalesAustralia
| | - Rodrigo J. Schwartz
- Melanoma Institute AustraliaSydneyNew South WalesAustralia,Department of Dermatology, Faculty of MedicineUniversity of ChileSantiagoChile
| | - Bruna Melhoranse‐Gouveia
- Melanoma Institute AustraliaSydneyNew South WalesAustralia,Faculty of Medicine and HealthUniversity of SydneySydneyNew South WalesAustralia
| | - Pascale Guitera
- Melanoma Institute AustraliaSydneyNew South WalesAustralia,Faculty of Medicine and HealthUniversity of SydneySydneyNew South WalesAustralia,Sydney Melanoma Diagnostic CentreRoyal Prince Alfred HospitalSydneyNew South WalesAustralia
| | | | - Veronica K. Y. Cheung
- Department of Tissue Pathology and Diagnostic OncologyRoyal Prince Alfred HospitalCamperdownNew South WalesAustralia
| | - Sydney Ch'ng
- Melanoma Institute AustraliaSydneyNew South WalesAustralia,Faculty of Medicine and HealthUniversity of SydneySydneyNew South WalesAustralia,Royal Prince Alfred HospitalSydneyNew South WalesAustralia
| | - Linda K. Martin
- Melanoma Institute AustraliaSydneyNew South WalesAustralia,Faculty of Medicine and HealthUniversity of SydneySydneyNew South WalesAustralia,Faculty of Medicine and HealthUniversity of New South WalesSydneyNew South WalesAustralia
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8
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Ho G, Gibson M, Kazemikhoo N, Murrell DF. Long-term follow up of Epidermolysis Bullosa in real practice shows stability of the EBDASI and improvement with some off-label therapies. JAAD Int 2022; 9:105-107. [PMID: 36248204 PMCID: PMC9558050 DOI: 10.1016/j.jdin.2022.07.008] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Affiliation(s)
- Genevieve Ho
- Department of Dermatology, St George Hospital, Sydney, Australia
| | - Matthew Gibson
- Department of Dermatology, St George Hospital, Sydney, Australia
- University of New South Wales, Faculty of Medicine and Health, Sydney, Australia
| | - Nooshafarin Kazemikhoo
- Department of Dermatology, St George Hospital, Sydney, Australia
- University of New South Wales, Faculty of Medicine and Health, Sydney, Australia
| | - Dedee F. Murrell
- Department of Dermatology, St George Hospital, Sydney, Australia
- University of New South Wales, Faculty of Medicine and Health, Sydney, Australia
- The George Institute for Global Health, Sydney, Australia
- Correspondence to: Dedee F. Murrell, MA, BMBCh, MD, Department of Dermatology, St George Hospital, Gray St, Kogarah, Sydney NSW 2217, Australia
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9
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Ho G, Kurek C, Stewart D, Martin LK. An unusual growth in the nail matrix: A case of superficial acral fibromyxoma. Skin Health and Disease 2022; 2:e121. [PMID: 36092267 PMCID: PMC9435459 DOI: 10.1002/ski2.121] [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] [Subscribe] [Scholar Register] [Received: 12/23/2021] [Revised: 04/21/2022] [Accepted: 04/23/2022] [Indexed: 11/12/2022]
Abstract
We describe a case of superficial acral fibromyxoma arising within the germinal matrix of the index finger. This is an uncommon localisation of this relatively newly described benign soft tissue tumour. Herein, we discuss the varied clinical presentation, distinguishing histopathological features and important differential diagnoses for this condition.
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Affiliation(s)
- Genevieve Ho
- Melanoma Institute Australia Sydney New South Wales Australia
- Faculty of Medicine and Health University of Sydney Sydney New South Wales Australia
| | - Caroline Kurek
- Histopathology Douglass Hanly Moir Pathology Sydney New South Wales Australia
| | - David Stewart
- Melanoma Institute Australia Sydney New South Wales Australia
- Royal North Shore Hospital Sydney New South Wales Australia
| | - Linda K. Martin
- Melanoma Institute Australia Sydney New South Wales Australia
- Faculty of Medicine and Health University of Sydney Sydney New South Wales Australia
- Faculty of Medicine University of New South Wales Sydney New South Wales Australia
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10
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Ho G, Schwartz RJ, Regio Pereira A, Dimitrou F, Paver E, McKenzie C, Saw RPM, Scolyer RA, Long GV, Guitera P. Reflectance confocal microscopy - a non-invasive tool for monitoring systemic treatment response in stage III unresectable primary scalp melanoma. J Eur Acad Dermatol Venereol 2022; 36:e583-e585. [PMID: 35285090 DOI: 10.1111/jdv.18076] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2021] [Accepted: 03/04/2022] [Indexed: 11/27/2022]
Affiliation(s)
- G Ho
- Melanoma Institute Australia, The University of Sydney, Sydney, New South Wales, Australia
- Faculty of Medicine and Health, The University of Sydney, Sydney, New South Wales, Australia
| | - R J Schwartz
- Melanoma Institute Australia, The University of Sydney, Sydney, New South Wales, Australia
- Department of Dermatology, Faculty of Medicine, University of Chile, Santiago, Chile
| | - A Regio Pereira
- Faculty of Medicine and Health, The University of Sydney, Sydney, New South Wales, Australia
- Sydney Melanoma Diagnostic Centre, Royal Prince Alfred Hospital, Sydney, New South Wales, Australia
- Federal University of Sao Paulo, Sao Paulo, Brazil
| | - F Dimitrou
- Melanoma Institute Australia, The University of Sydney, Sydney, New South Wales, Australia
- Department of Dermatology, University Hospital of Zurich, Zurich, Switzerland
| | - E Paver
- Melanoma Institute Australia, The University of Sydney, Sydney, New South Wales, Australia
- Department of Dermatology, University Hospital of Zurich, Zurich, Switzerland
- NSW Health Pathology, Sydney, New South Wales, Australia
| | - C McKenzie
- Faculty of Medicine and Health, The University of Sydney, Sydney, New South Wales, Australia
- NSW Health Pathology, Sydney, New South Wales, Australia
| | - R P M Saw
- Melanoma Institute Australia, The University of Sydney, Sydney, New South Wales, Australia
- Faculty of Medicine and Health, The University of Sydney, Sydney, New South Wales, Australia
- Royal Prince Alfred Hospital, Sydney, New South Wales, Australia
| | - R A Scolyer
- Melanoma Institute Australia, The University of Sydney, Sydney, New South Wales, Australia
- Faculty of Medicine and Health, The University of Sydney, Sydney, New South Wales, Australia
- NSW Health Pathology, Sydney, New South Wales, Australia
- Royal Prince Alfred Hospital, Sydney, New South Wales, Australia
- Charles Perkins Centre, The University of Sydney, Sydney, New South Wales, Australia
| | - G V Long
- Melanoma Institute Australia, The University of Sydney, Sydney, New South Wales, Australia
- Faculty of Medicine and Health, The University of Sydney, Sydney, New South Wales, Australia
- Royal North Shore Hospital and Mater Hospitals, Sydney, New South Wales, Australia
| | - P Guitera
- Melanoma Institute Australia, The University of Sydney, Sydney, New South Wales, Australia
- Faculty of Medicine and Health, The University of Sydney, Sydney, New South Wales, Australia
- Sydney Melanoma Diagnostic Centre, Royal Prince Alfred Hospital, Sydney, New South Wales, Australia
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11
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Star P, Jackett LA, Cheung K, Wilmott JS, Ho G, Smith A, Long GV, Scolyer RA, Martin LK. Multiple eruptive squamoproliferative lesions during
anti‐PD1
immunotherapy for metastatic melanoma: pathogenesis, immunohistochemical analysis and treatment. Dermatol Ther 2022; 35:e15472. [DOI: 10.1111/dth.15472] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2022] [Revised: 03/12/2022] [Accepted: 03/22/2022] [Indexed: 11/28/2022]
Affiliation(s)
- Phoebe Star
- Melanoma Institute Australia The University of Sydney Sydney New South Wales Australia
| | - Louise A. Jackett
- Melanoma Institute Australia The University of Sydney Sydney New South Wales Australia
- Tissue Pathology and Diagnostic Oncology Royal Prince Alfred Hospital and NSW Health Pathology Sydney New South Wales Australia
| | - Karen Cheung
- Skin & Cancer Foundation Australia / Douglass Hanly Moir Pathology Darlinghurst New South Wales Australia
| | - James S. Wilmott
- Melanoma Institute Australia The University of Sydney Sydney New South Wales Australia
| | - Genevieve Ho
- Melanoma Institute Australia The University of Sydney Sydney New South Wales Australia
| | - Annika Smith
- Melanoma Institute Australia The University of Sydney Sydney New South Wales Australia
| | - Georgina V. Long
- Melanoma Institute Australia The University of Sydney Sydney New South Wales Australia
- Faculty of Medicine and Health The University of Sydney Sydney New South Wales Australia
- Royal North Shore and Mater Hospitals Sydney Australia
- Charles Perkins Centre The University of Sydney Sydney New South Wales Australia
| | - Richard A. Scolyer
- Melanoma Institute Australia The University of Sydney Sydney New South Wales Australia
- Tissue Pathology and Diagnostic Oncology Royal Prince Alfred Hospital and NSW Health Pathology Sydney New South Wales Australia
- Faculty of Medicine and Health The University of Sydney Sydney New South Wales Australia
- Charles Perkins Centre The University of Sydney Sydney New South Wales Australia
| | - Linda K. Martin
- Melanoma Institute Australia The University of Sydney Sydney New South Wales Australia
- Faculty of Medicine and Health The University of Sydney Sydney New South Wales Australia
- Faculty of Medicine and Health The University of New South Wales Sydney Australia
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12
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Schwartz RJ, Ho G, Smith A, Collgros H, Regio Pereira A, Gouveia B, Long GV, Menzies AM, Potter AJ, Paver E, Star P, Scolyer RA, Martin LK. Successful treatment of eruptive keratoacanthomas with actitretin for patients on checkpoint inhibitor immunotherapy. J Eur Acad Dermatol Venereol 2022; 36:e445-e448. [PMID: 35043483 DOI: 10.1111/jdv.17940] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2021] [Accepted: 01/05/2022] [Indexed: 11/30/2022]
Affiliation(s)
- Rodrigo J Schwartz
- Melanoma Institute Australia, The University of Sydney, Sydney, Australia.,Department of Dermatology, Faculty of Medicine, University of Chile, Santiago, Chile
| | - Genevieve Ho
- Melanoma Institute Australia, The University of Sydney, Sydney, Australia.,Faculty of Medicine and Health, The University of Sydney, Sydney, Australia
| | - Annika Smith
- Melanoma Institute Australia, The University of Sydney, Sydney, Australia.,Faculty of Medicine and Health, The University of Sydney, Sydney, Australia
| | - Helena Collgros
- Faculty of Medicine and Health, The University of Sydney, Sydney, Australia.,Sydney Melanoma Diagnostic Centre, Royal Prince Alfred Hospital, Sydney, Australia
| | - Amanda Regio Pereira
- Faculty of Medicine and Health, The University of Sydney, Sydney, Australia.,Sydney Melanoma Diagnostic Centre, Royal Prince Alfred Hospital, Sydney, Australia.,Federal University of Sao Paulo, Sao Paulo, Brazil
| | - Bruna Gouveia
- Melanoma Institute Australia, The University of Sydney, Sydney, Australia
| | - Georgina V Long
- Melanoma Institute Australia, The University of Sydney, Sydney, Australia.,Faculty of Medicine and Health, The University of Sydney, Sydney, Australia.,Royal North Shore and Mater Hospitals, Sydney, Australia.,Charles Perkins Centre, The University of Sydney, Sydney, Australia
| | - Alexander M Menzies
- Melanoma Institute Australia, The University of Sydney, Sydney, Australia.,Faculty of Medicine and Health, The University of Sydney, Sydney, Australia.,Royal North Shore and Mater Hospitals, Sydney, Australia
| | - Alison J Potter
- Melanoma Institute Australia, The University of Sydney, Sydney, Australia.,Faculty of Medicine and Health, The University of Sydney, Sydney, Australia.,Faculty of Medicine and Health, University of New South Wales, Sydney, Australia.,Tissue and Pathology Diagnostic Oncology, Royal Prince Alfred Hospital and NSW Health Pathology, Sydney, Australia
| | - Elizabeth Paver
- Melanoma Institute Australia, The University of Sydney, Sydney, Australia.,Faculty of Medicine and Health, The University of Sydney, Sydney, Australia.,Tissue and Pathology Diagnostic Oncology, Royal Prince Alfred Hospital and NSW Health Pathology, Sydney, Australia
| | - Phoebe Star
- Melanoma Institute Australia, The University of Sydney, Sydney, Australia
| | - Richard A Scolyer
- Melanoma Institute Australia, The University of Sydney, Sydney, Australia.,Faculty of Medicine and Health, The University of Sydney, Sydney, Australia.,Tissue and Pathology Diagnostic Oncology, Royal Prince Alfred Hospital and NSW Health Pathology, Sydney, Australia.,Charles Perkins Centre, The University of Sydney, Sydney, Australia
| | - Linda K Martin
- Melanoma Institute Australia, The University of Sydney, Sydney, Australia.,Faculty of Medicine and Health, The University of Sydney, Sydney, Australia.,Faculty of Medicine and Health, University of New South Wales, Sydney, Australia
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13
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Ho G, Murrell DF. Angiosarcoma presenting as unexplainable unilateral leg pain and purpuric toes. Med J Aust 2021; 215:456. [PMID: 34657290 DOI: 10.5694/mja2.51310] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2021] [Revised: 09/11/2021] [Accepted: 09/14/2021] [Indexed: 11/17/2022]
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14
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Ho G, Blake SC, Sheriff T, Daniel BS, Murrell DF. Impact of COVID-19 on inpatient dermatology consults in an Australian tertiary hospital. Australas J Dermatol 2021; 62:427-428. [PMID: 34129241 PMCID: PMC8441729 DOI: 10.1111/ajd.13649] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Affiliation(s)
- Genevieve Ho
- Department of Dermatology, St George Hospital, Sydney, NSW, Australia
| | - Stephanie C Blake
- Department of Dermatology, St George Hospital, Sydney, NSW, Australia.,UNSW Faculty of Medicine, Sydney, NSW, Australia
| | - Tabrez Sheriff
- Department of Dermatology, St George Hospital, Sydney, NSW, Australia.,UNSW Faculty of Medicine, Sydney, NSW, Australia
| | - Benjamin S Daniel
- Department of Dermatology, St George Hospital, Sydney, NSW, Australia.,UNSW Faculty of Medicine, Sydney, NSW, Australia.,Department of Dermatology, St Vincent's Hospital, Melbourne, Vic, Australia
| | - Dedee F Murrell
- Department of Dermatology, St George Hospital, Sydney, NSW, Australia.,UNSW Faculty of Medicine, Sydney, NSW, Australia.,The George Institute for Global Health, Sydney, NSW, Australia
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15
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Dau J, Ho G, Choi H, Schwab J, Kohler M. POS1150 ANATOMICAL LOCATIONS AND CORRELATES OF CALCIUM PYROPHOSPHATE CRYSTAL DEPOSITS OF THE SPINE – PATHOLOGIC EXAMINATION OF 77 SURGICAL CASES. Ann Rheum Dis 2021. [DOI: 10.1136/annrheumdis-2021-eular.4313] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
Background:Spinal involvement in calcium pyrophosphate deposition disease (CPPD) is thought to be a rare occurrence and is seen infrequently as crowned dens syndrome. Furthermore, data on anatomical locations and correlates of calcium pyrophosphate (CPP) deposits in spinal CPPD are scarce.Objectives:To describe the anatomical locations and correlates of pathologically confirmed CPPD of the spine.Methods:Consecutive patients with spinal CPPD were identified via retrospective chart review of individuals who underwent spine surgery for intractable chronic neck or back pain at Massachusetts General Hospital between 2009 and 2014. These deposits and surrounding anatomical structures were surgically resected and confirmed to have calcium pyrophosphate deposition upon pathologic review. We reviewed musculoskeletal imaging (CT, MRI, XR) and laboratory data from these pathologically confirmed cases.Results:From April 2009 to August 2014, we identified 77 individuals with pathologically confirmed CPPD of the spine. The mean age was 68 years; 41 (53%) were female; mean BMI was 28.7. Calcium pyrophosphate (CPP) was grossly identified intraoperatively by the surgeon in 38 cases (50%), typically as “chalky white deposits” (Figure 1). CPP deposits were seen most frequently in the ligamentum flavum (23%) and intervertebral disc (23%), followed by other less common locations (Table 1). Imaging findings in the soft tissue or intervertebral disc suggestive of CPPD were found in 5 cases (6%), whereas findings of spinal canal narrowing, facet arthropathy, or ligamentum flavum thickening were eventually correlative with CPP deposits in pathologic specimens. Only 7 (9%) experienced a prior episode of acute CPP arthritis (pseudogout). Chondrocalcinosis on x-ray was seen in 26 cases (34%), most commonly in the wrist and/or knees. Osteoarthritis was present in all spinal imaging, and 65% had comorbid scoliosis. Laboratory abnormalities associated with secondary causes of CPPD (hypercalcemia, hypomagnesemia, hyperparathyroidism) were not seen with spinal CPPD.Conclusion:Spinal CPPD may occur more frequently than previously perceived. The ligamentum flavum and intervertebral discs were common anatomical locations for spinal CPPD. Advanced imaging of the spine showed low sensitivity for detecting spinal CPPD. Only a small minority had typical peripheral joint involvement or imaging with peripheral joint chondrocalcinosis. Thus, without pathologic confirmation, the vast majority of cases would remain unidentified. These findings call for the need to seek pathologic confirmation to determine the robust epidemiology and also raise the potential role for preoperative CPPD treatment.Table 1.Spinal Anatomic Locations of Pathologically Confirmed CPPDSpinal Anatomic LocationNo. of Sites (%)*ligamentum flavum29 (23)Intervetebral Disc28 (23)Other Location19 (15)Posterior Elements18 (15)Facet14 (11)Synovium8 (6)Interspinous Ligament3 (2)Subarticular/Lateral Recess2 (2)Fibrocartilaginous Tissue1 (1)Inner Spine1 (1)Other Ligament1 (1)*Some patients had more than one anatomic location where CPP was isolatedFigure 1.Gross visualization of calcium pyrophosphate deposition (black arrow)Disclosure of Interests:Jonathan Dau: None declared, Gary Ho: None declared, Hyon Choi Consultant of: Ironwood, Selecta, Horizon, Takeda, Kowa, Vaxart, Grant/research support from: Ironwood, Horizon, Joseph Schwab: None declared, Minna Kohler Speakers bureau: Eli Lily, Consultant of: Novartis.
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16
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Ho G, Sheriff T, Doria-Ruiz M, Loh Y, Murrell DF. Are biosimilars for pemphigus safe? Clin Exp Dermatol 2021; 46:942-943. [PMID: 33577125 DOI: 10.1111/ced.14610] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2020] [Revised: 02/09/2021] [Accepted: 02/11/2021] [Indexed: 11/29/2022]
Affiliation(s)
- G Ho
- Departments of, Dermatology, St George Hospital, Sydney, NSW, Australia
| | - T Sheriff
- Departments of, Dermatology, St George Hospital, Sydney, NSW, Australia.,University of New South Wales, Sydney, NSW, Australia
| | - M Doria-Ruiz
- University of New South Wales, Sydney, NSW, Australia
| | - Y Loh
- Cancer Care Centre, St George Hospital, Sydney, NSW, Australia
| | - D F Murrell
- Departments of, Dermatology, St George Hospital, Sydney, NSW, Australia.,University of New South Wales, Sydney, NSW, Australia.,The George Institute for Global Health, Sydney, Australia
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17
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Orsini S, Livi SA, Lichtenegger H, Barabash S, Milillo A, De Angelis E, Phillips M, Laky G, Wieser M, Olivieri A, Plainaki C, Ho G, Killen RM, Slavin JA, Wurz P, Berthelier JJ, Dandouras I, Kallio E, McKenna-Lawlor S, Szalai S, Torkar K, Vaisberg O, Allegrini F, Daglis IA, Dong C, Escoubet CP, Fatemi S, Fränz M, Ivanovski S, Krupp N, Lammer H, Leblanc F, Mangano V, Mura A, Nilsson H, Raines JM, Rispoli R, Sarantos M, Smith HT, Szego K, Aronica A, Camozzi F, Di Lellis AM, Fremuth G, Giner F, Gurnee R, Hayes J, Jeszenszky H, Tominetti F, Trantham B, Balaz J, Baumjohann W, Brienza D, Bührke U, Bush MD, Cantatore M, Cibella S, Colasanti L, Cremonese G, Cremonesi L, D'Alessandro M, Delcourt D, Delva M, Desai M, Fama M, Ferris M, Fischer H, Gaggero A, Gamborino D, Garnier P, Gibson WC, Goldstein R, Grande M, Grishin V, Haggerty D, Holmström M, Horvath I, Hsieh KC, Jacques A, Johnson RE, Kazakov A, Kecskemety K, Krüger H, Kürbisch C, Lazzarotto F, Leblanc F, Leichtfried M, Leoni R, Loose A, Maschietti D, Massetti S, Mattioli F, Miller G, Moissenko D, Morbidini A, Noschese R, Nuccilli F, Nunez C, Paschalidis N, Persyn S, Piazza D, Oja M, Ryno J, Schmidt W, Scheer JA, Shestakov A, Shuvalov S, Seki K, Selci S, Smith K, Sordini R, Svensson J, Szalai L, Toublanc D, Urdiales C, Varsani A, Vertolli N, Wallner R, Wahlstroem P, Wilson P, Zampieri S. SERENA: Particle Instrument Suite for Determining the Sun-Mercury Interaction from BepiColombo. Space Sci Rev 2021; 217:11. [PMID: 33487762 PMCID: PMC7803725 DOI: 10.1007/s11214-020-00787-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/02/2020] [Accepted: 12/03/2020] [Indexed: 06/12/2023]
Abstract
The ESA-JAXA BepiColombo mission to Mercury will provide simultaneous measurements from two spacecraft, offering an unprecedented opportunity to investigate magnetospheric and exospheric particle dynamics at Mercury as well as their interactions with solar wind, solar radiation, and interplanetary dust. The particle instrument suite SERENA (Search for Exospheric Refilling and Emitted Natural Abundances) is flying in space on-board the BepiColombo Mercury Planetary Orbiter (MPO) and is the only instrument for ion and neutral particle detection aboard the MPO. It comprises four independent sensors: ELENA for neutral particle flow detection, Strofio for neutral gas detection, PICAM for planetary ions observations, and MIPA, mostly for solar wind ion measurements. SERENA is managed by a System Control Unit located inside the ELENA box. In the present paper the scientific goals of this suite are described, and then the four units are detailed, as well as their major features and calibration results. Finally, the SERENA operational activities are shown during the orbital path around Mercury, with also some reference to the activities planned during the long cruise phase.
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Affiliation(s)
- S Orsini
- Institute of Space Astrophysics and Planetology, INAF, via del Fosso del Cavaliere 100, 00133 Rome, Italy
| | - S A Livi
- Southwest Research Institute, San Antonio, TX USA
- Department of Climate and Space Sciences and Engineering, University of Michigan, Ann Arbor, MI USA
| | - H Lichtenegger
- Space Research Institute, Austrian Academy of Sciences, Graz, Austria
| | - S Barabash
- Swedish Institute of Space Physics, Kiruna, Sweden
| | - A Milillo
- Institute of Space Astrophysics and Planetology, INAF, via del Fosso del Cavaliere 100, 00133 Rome, Italy
| | - E De Angelis
- Institute of Space Astrophysics and Planetology, INAF, via del Fosso del Cavaliere 100, 00133 Rome, Italy
| | - M Phillips
- Southwest Research Institute, San Antonio, TX USA
| | - G Laky
- Space Research Institute, Austrian Academy of Sciences, Graz, Austria
| | - M Wieser
- Swedish Institute of Space Physics, Kiruna, Sweden
| | | | | | - G Ho
- The Johns Hopkins University Applied Physics Laboratory, Laurel, MD 20723 USA
| | - R M Killen
- NASA/Goddard Space Flight Center, Greenbelt, MD 20771 USA
| | - J A Slavin
- Department of Climate and Space Sciences and Engineering, University of Michigan, Ann Arbor, MI USA
| | - P Wurz
- Physics Institute, University of Bern, Bern, Switzerland
| | | | - I Dandouras
- Institut de Recherche en Astrophysique et Planétologie, CNRS, CNES, Université de Toulouse, Toulouse, France
| | - E Kallio
- School of Electrical Engineering, Department of Electronics and Nanoengineering, Aalto University, Helsinki, Finland
| | | | - S Szalai
- Wigner Research Centre for Physics, Budapest, Hungary
| | - K Torkar
- Space Research Institute, Austrian Academy of Sciences, Graz, Austria
| | - O Vaisberg
- IKI Space Research Institute, Moscow, Russia
| | - F Allegrini
- Southwest Research Institute, San Antonio, TX USA
| | - I A Daglis
- Department of Physics, National and Kapodistrian University of Athens, Athens, Greece
- Hellenic Space Center, Athens, Greece
| | - C Dong
- Department of Astrophysical Sciences and Princeton Plasma Physics Laboratory, Princeton University, Princeton, NJ USA
| | | | - S Fatemi
- Swedish Institute of Space Physics, Kiruna, Sweden
| | - M Fränz
- Max-Planck-Institut für Sonnensystemforschung, MPS, 37077 Göttingen, Germany
| | - S Ivanovski
- Astronomical Observatory, INAF, Trieste, Italy
| | - N Krupp
- Max-Planck-Institut für Sonnensystemforschung, MPS, 37077 Göttingen, Germany
| | - H Lammer
- Space Research Institute, Austrian Academy of Sciences, Graz, Austria
| | | | - V Mangano
- Institute of Space Astrophysics and Planetology, INAF, via del Fosso del Cavaliere 100, 00133 Rome, Italy
| | - A Mura
- Institute of Space Astrophysics and Planetology, INAF, via del Fosso del Cavaliere 100, 00133 Rome, Italy
| | - H Nilsson
- Swedish Institute of Space Physics, Kiruna, Sweden
| | - J M Raines
- Department of Climate and Space Sciences and Engineering, University of Michigan, Ann Arbor, MI USA
| | - R Rispoli
- Institute of Space Astrophysics and Planetology, INAF, via del Fosso del Cavaliere 100, 00133 Rome, Italy
| | - M Sarantos
- NASA/Goddard Space Flight Center, Greenbelt, MD 20771 USA
| | - H T Smith
- The Johns Hopkins University Applied Physics Laboratory, Laurel, MD 20723 USA
| | - K Szego
- Wigner Research Centre for Physics, Budapest, Hungary
| | - A Aronica
- Institute of Space Astrophysics and Planetology, INAF, via del Fosso del Cavaliere 100, 00133 Rome, Italy
| | | | | | - G Fremuth
- Space Research Institute, Austrian Academy of Sciences, Graz, Austria
| | - F Giner
- Space Research Institute, Austrian Academy of Sciences, Graz, Austria
| | - R Gurnee
- Laboratory for Atmospheric and Space Physics, Boulder, CO USA
| | - J Hayes
- The Johns Hopkins University Applied Physics Laboratory, Laurel, MD 20723 USA
| | - H Jeszenszky
- Space Research Institute, Austrian Academy of Sciences, Graz, Austria
| | | | - B Trantham
- Southwest Research Institute, San Antonio, TX USA
| | - J Balaz
- Institute of Experimental Physics SAS, Slovak Academy of Sciences, 040 01 Košice, Slovakia
| | - W Baumjohann
- Space Research Institute, Austrian Academy of Sciences, Graz, Austria
| | - D Brienza
- Institute of Space Astrophysics and Planetology, INAF, via del Fosso del Cavaliere 100, 00133 Rome, Italy
| | - U Bührke
- Max-Planck-Institut für Sonnensystemforschung, MPS, 37077 Göttingen, Germany
| | - M D Bush
- Physics Institute, University of Bern, Bern, Switzerland
| | | | - S Cibella
- Istituto di Struttura della Materia (CNR-ISM), 00133 Roma, Italy
| | - L Colasanti
- Institute of Space Astrophysics and Planetology, INAF, via del Fosso del Cavaliere 100, 00133 Rome, Italy
| | - G Cremonese
- Astronomical Observatory, INAF, Padova, Italy
| | | | - M D'Alessandro
- Istituto di Struttura della Materia (CNR-ISM), 00133 Roma, Italy
| | | | - M Delva
- Space Research Institute, Austrian Academy of Sciences, Graz, Austria
| | - M Desai
- Southwest Research Institute, San Antonio, TX USA
| | - M Fama
- Comisión Nacional de Energía Atómica, cnea, Centro Atómico Bariloche, Bariloche, Argentina
| | - M Ferris
- Southwest Research Institute, San Antonio, TX USA
| | - H Fischer
- Max-Planck-Institut für Sonnensystemforschung, MPS, 37077 Göttingen, Germany
| | - A Gaggero
- Istituto di Struttura della Materia (CNR-ISM), 00133 Roma, Italy
| | - D Gamborino
- Physics Institute, University of Bern, Bern, Switzerland
| | - P Garnier
- Institut de Recherche en Astrophysique et Planétologie, CNRS, CNES, Université de Toulouse, Toulouse, France
| | - W C Gibson
- Southwest Research Institute, San Antonio, TX USA
| | - R Goldstein
- Southwest Research Institute, San Antonio, TX USA
| | - M Grande
- Aberystwyth University, Aberystwyth, Ceredigion SY23 3FL UK
| | - V Grishin
- IKI Space Research Institute, Moscow, Russia
| | - D Haggerty
- The Johns Hopkins University Applied Physics Laboratory, Laurel, MD 20723 USA
| | - M Holmström
- Swedish Institute of Space Physics, Kiruna, Sweden
| | - I Horvath
- Wigner Research Centre for Physics, Budapest, Hungary
| | - K-C Hsieh
- University of Arizona, Tucson, AZ USA
| | - A Jacques
- NASA/Goddard Space Flight Center, Greenbelt, MD 20771 USA
| | - R E Johnson
- University of Virginia, Charlottesville, VA 22904 USA
| | - A Kazakov
- Institute of Space Astrophysics and Planetology, INAF, via del Fosso del Cavaliere 100, 00133 Rome, Italy
| | - K Kecskemety
- Wigner Research Centre for Physics, Budapest, Hungary
| | - H Krüger
- Max-Planck-Institut für Sonnensystemforschung, MPS, 37077 Göttingen, Germany
| | - C Kürbisch
- Space Research Institute, Austrian Academy of Sciences, Graz, Austria
| | | | | | - M Leichtfried
- Space Research Institute, Austrian Academy of Sciences, Graz, Austria
| | | | - A Loose
- Max-Planck-Institut für Sonnensystemforschung, MPS, 37077 Göttingen, Germany
| | - D Maschietti
- Istituto Fotonica e Nanotecnologie, CNR-IFN, Roma, Italy
| | - S Massetti
- Institute of Space Astrophysics and Planetology, INAF, via del Fosso del Cavaliere 100, 00133 Rome, Italy
| | | | - G Miller
- Southwest Research Institute, San Antonio, TX USA
| | - D Moissenko
- IKI Space Research Institute, Moscow, Russia
| | - A Morbidini
- Institute of Space Astrophysics and Planetology, INAF, via del Fosso del Cavaliere 100, 00133 Rome, Italy
| | - R Noschese
- Institute of Space Astrophysics and Planetology, INAF, via del Fosso del Cavaliere 100, 00133 Rome, Italy
| | - F Nuccilli
- Institute of Space Astrophysics and Planetology, INAF, via del Fosso del Cavaliere 100, 00133 Rome, Italy
| | - C Nunez
- Southwest Research Institute, San Antonio, TX USA
| | - N Paschalidis
- NASA/Goddard Space Flight Center, Greenbelt, MD 20771 USA
| | - S Persyn
- Southwest Research Institute, San Antonio, TX USA
| | - D Piazza
- Physics Institute, University of Bern, Bern, Switzerland
| | - M Oja
- Swedish Institute of Space Physics, Kiruna, Sweden
| | - J Ryno
- Finnish Meteorological Institute FMI, Helsinki, Finland
| | - W Schmidt
- Finnish Meteorological Institute FMI, Helsinki, Finland
| | | | - A Shestakov
- IKI Space Research Institute, Moscow, Russia
| | - S Shuvalov
- IKI Space Research Institute, Moscow, Russia
| | - K Seki
- Department of Earth and Planetary Science, Graduate School of Science, University of Tokyo, Tokyo, Japan
| | - S Selci
- Istituto di Struttura della Materia (CNR-ISM), 00133 Roma, Italy
| | - K Smith
- Southwest Research Institute, San Antonio, TX USA
| | - R Sordini
- Institute of Space Astrophysics and Planetology, INAF, via del Fosso del Cavaliere 100, 00133 Rome, Italy
| | | | - L Szalai
- Wigner Research Centre for Physics, Budapest, Hungary
| | - D Toublanc
- Institut de Recherche en Astrophysique et Planétologie, CNRS, CNES, Université de Toulouse, Toulouse, France
| | - C Urdiales
- Southwest Research Institute, San Antonio, TX USA
| | - A Varsani
- Space Research Institute, Austrian Academy of Sciences, Graz, Austria
| | - N Vertolli
- Institute of Space Astrophysics and Planetology, INAF, via del Fosso del Cavaliere 100, 00133 Rome, Italy
| | - R Wallner
- Space Research Institute, Austrian Academy of Sciences, Graz, Austria
| | - P Wahlstroem
- Physics Institute, University of Bern, Bern, Switzerland
| | - P Wilson
- Southwest Research Institute, San Antonio, TX USA
| | - S Zampieri
- Institute of Space Astrophysics and Planetology, INAF, via del Fosso del Cavaliere 100, 00133 Rome, Italy
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Aldaas O, Lupercio F, Malladi C, Mylavarapu P, Darden D, Han F, Hoffmayer K, Krummen D, Ho G, Raissi F, Feld G, Hsu J. Catheter ablation of atrial fibrillation in patients with heart failure with preserved ejection fraction: a systematic review and meta-analysis. Eur Heart J 2020. [DOI: 10.1093/ehjci/ehaa946.0582] [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] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Background
Catheter ablation improves clinical outcomes in symptomatic atrial fibrillation (AF) patients with heart failure (HF) with reduced ejection fraction (HFrEF). However, the role of catheter ablation in HF patients with a preserved ejection fraction (HFpEF) is less clear.
Purpose
To determine the efficacy of catheter ablation of AF in patients with HFpEF relative to those with HFrEF.
Methods
We performed an extensive literature search and systematic review of studies that compared AF recurrence at one year after catheter ablation of AF in patients with HFpEF versus those with HFrEF. Risk ratio (RR) 95% confidence intervals were measured using the Mantel-Haenszel method for dichotomous variables, where a RR<1.0 favors the HFpEF group.
Results
Four studies with a total of 563 patients were included, of which 312 had HFpEF and 251 had HFrEF. All patients included were undergoing first time catheter ablation of AF. Patients with HFpEF experienced similar recurrence of AF one year after ablation on or off antiarrhythmic drugs compared to those with HFrEF (RR 0.87; 95% CI 0.69–1.10, p=0.24), as shown in Figure 1. Recurrence of AF was assessed with electrocardiography, Holter monitoring, and/or event monitoring at scheduled follow-up visits and final follow-up.
Conclusion
Based on the results of this meta-analysis, catheter ablation of AF in patients with HFpEF appears as efficacious in maintaining sinus rhythm as in those with HFrEF.
Funding Acknowledgement
Type of funding source: None
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Affiliation(s)
- O.M Aldaas
- University of California, San Diego, San Diego, United States of America
| | - F Lupercio
- University of California, San Diego, San Diego, United States of America
| | - C.L Malladi
- University of California, San Diego, San Diego, United States of America
| | - P.S Mylavarapu
- University of California, San Diego, San Diego, United States of America
| | - D Darden
- University of California, San Diego, San Diego, United States of America
| | - F Han
- University of California, San Diego, San Diego, United States of America
| | - K.S Hoffmayer
- University of California, San Diego, San Diego, United States of America
| | - D Krummen
- University of California, San Diego, San Diego, United States of America
| | - G Ho
- University of California, San Diego, San Diego, United States of America
| | - F Raissi
- University of California, San Diego, San Diego, United States of America
| | - G.K Feld
- University of California, San Diego, San Diego, United States of America
| | - J.C Hsu
- University of California, San Diego, San Diego, United States of America
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19
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Ho G, Fung C, Cook D. A case of tattoo granulomas and uveitis. Australas J Dermatol 2020; 62:84-86. [PMID: 32955106 DOI: 10.1111/ajd.13440] [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] [Received: 02/18/2020] [Revised: 06/30/2020] [Accepted: 07/11/2020] [Indexed: 11/29/2022]
Affiliation(s)
- Genevieve Ho
- Department of Dermatology, Concord Repatriation General Hospital, Concord, Australia
| | - Caroline Fung
- Department of Anatomical Pathology, Concord Repatriation General Hospital, Concord, Australia
| | - David Cook
- Department of Dermatology, Concord Repatriation General Hospital, Concord, Australia.,Concord Clinical School, University of Sydney, Concord, Australia
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20
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Lee KH, Ho G, Wong WM, Lam HL, Lam PW. Imaging and Clinical Presentation of Caesarean Scar Pregnancy. Hong Kong Journal of Radiology 2019. [DOI: 10.12809/hkjr1916866] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Affiliation(s)
- KH Lee
- Department of Radiology, Queen Mary Hospital, Pokfulam, Hong Kong
| | - G Ho
- Department of Radiology, Queen Mary Hospital, Pokfulam, Hong Kong
| | - WM Wong
- Department of Radiology, Queen Mary Hospital, Pokfulam, Hong Kong
| | - HL Lam
- Department of Radiology, Queen Mary Hospital, Pokfulam, Hong Kong
| | - PW Lam
- Department of Radiology, Queen Mary Hospital, Pokfulam, Hong Kong
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21
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Lin A, Tran H, Hsu J, Hoffmayer K, Feld G, Adler E, Pretorius V, Krummen D, Ho G. Ventricular Arrhythmias in Patients with Biventricular Assist Devices. J Heart Lung Transplant 2019. [DOI: 10.1016/j.healun.2019.01.101] [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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22
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Azhari H, King JA, Underwood F, Coward S, shah S, Ng S, Ho G, Chan C, Kaplan GG. A258 THE GLOBAL INCIDENCE OF PEPTIC ULCER DISEASE AT THE TURN OF THE 21ST CENTURY: A STUDY OF THE ORGANIZATION FOR ECONOMIC CO-OPERATION AND DEVELOPMENT (OECD). J Can Assoc Gastroenterol 2019. [DOI: 10.1093/jcag/gwz006.257] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- H Azhari
- Gastroenterology & Hepatology, University of Calgary, Calgary, AB, Canada
| | - J A King
- University of Calgary, Calgary, AB, Canada
| | - F Underwood
- Gastroenterology & Hepatology, University of Calgary, Calgary, AB, Canada
| | - S Coward
- University of Calgary, Calgary, AB, Canada
| | - S shah
- Vanderbilt University, Nashville, TN
| | - S Ng
- Chinese University of Hong Kong, Hong Kong, Hong Kong
| | - G Ho
- Chinese University of Hong Kong, Hong Kong, Hong Kong
| | - C Chan
- Chinese University of Hong Kong, Hong Kong, Hong Kong
| | - G G Kaplan
- Medicine and Community Health Sciences, University of Calgary, Calgary, AB, Canada
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23
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Affiliation(s)
- H H Oon
- National Skin Centre, Singapore
| | - G Ho
- Concord Repatriation General Hospital, Sydney, Australia
| | - H Sandar
- Ocular Inflammation and Immunology Department, Singapore National Eye Centre, Singapore.,Mandalay Eye ENT Hospital, Mandalay, Myanmar
| | - S P Chee
- Ocular Inflammation and Immunology Department, Singapore National Eye Centre, Singapore.,Singapore Eye Research Institute, Singapore.,Department of Ophthalmology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore.,Ophthalmology and Visual Sciences Academic Clinical Research Program, Duke-NUS Graduate Medical School, Singapore
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24
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Ho G, Carey KA, Cardamone M, Farrar MA. Myotonic dystrophy type 1: clinical manifestations in children and adolescents. Arch Dis Child 2019; 104:48-52. [PMID: 29871899 DOI: 10.1136/archdischild-2018-314837] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [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] [Received: 01/21/2018] [Revised: 03/14/2018] [Accepted: 05/11/2018] [Indexed: 12/19/2022]
Abstract
OBJECTIVE Myotonic dystrophy type 1 (DM1) is an autosomal-dominant neuromuscular disease with variable severity affecting all ages; however, current care guidelines are adult-focused. The objective of the present study was to profile DM1 in childhood and propose a framework to guide paediatric-focused management. DESIGN, SETTING AND PATIENTS 40 children with DM1 (mean age 12.8 years; range 2-19) were studied retrospectively for a total of 513 follow-up years at Sydney Children's Hospital. 143 clinical parameters were recorded. RESULTS The clinical spectrum of disease in childhood differs from adults, with congenital myotonic dystrophy (CDM1) having more severe health issues than childhood-onset/juvenile patients (JDM1). Substantial difficulties with intellectual (CDM1 25/26 96.2%; JDM1 9/10, 90.0%), fine motor (CDM1 23/30, 76.6%; JDM1 6/10, 60.0%), gastrointestinal (CDM1 17/30, 70.0%; JDM1 3/10, 30.0%) and neuromuscular function (CDM1 30/30, 100.0%; JDM1 25/30, 83.3%) were evident. CONCLUSION The health consequences of DM1 in childhood are diverse, highlighting the need for paediatric multidisciplinary management approaches that encompass key areas of cognition, musculoskeletal, gastrointestinal, respiratory, cardiac and sleep issues.
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Affiliation(s)
- Genevieve Ho
- Discipline of Paediatrics, School of Women's and Children's Health, UNSW Medicine, UNSW Sydney, Sydney, New South Wales, Australia
| | - Kate A Carey
- Discipline of Paediatrics, School of Women's and Children's Health, UNSW Medicine, UNSW Sydney, Sydney, New South Wales, Australia
| | - Michael Cardamone
- Discipline of Paediatrics, School of Women's and Children's Health, UNSW Medicine, UNSW Sydney, Sydney, New South Wales, Australia.,Department of Neurology, Sydney Children's Hospital, Randwick, New South Wales, Australia
| | - Michelle A Farrar
- Discipline of Paediatrics, School of Women's and Children's Health, UNSW Medicine, UNSW Sydney, Sydney, New South Wales, Australia.,Department of Neurology, Sydney Children's Hospital, Randwick, New South Wales, Australia
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25
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Tse DML, Ho G, Tsang CP, Chan KH, Lee R. Delayed Cerebral Hyperperfusion with Subarachnoid Haemorrhage after Carotid Artery Stenting. Hong Kong J Radiol 2018. [DOI: 10.12809/hkjr1816834] [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: 11/05/2022] Open
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26
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Liam C, Ho G, Chai C, Bt Alip A, Pang Y. P3.13-15 First-Line Afatinib Dose Initiation and Adjustment in Patients with EGFR Mutant Advanced Non-Small Cell Lung Cancer. J Thorac Oncol 2018. [DOI: 10.1016/j.jtho.2018.08.1855] [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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27
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Liam C, Ho G, Chai C, Bt Alip A, Pang Y. P3.15-21 Real-World Experience of First-Line Afatinib Treatment in Patients with EGFR Mutant Advanced Non-Small Cell Lung Cancer. J Thorac Oncol 2018. [DOI: 10.1016/j.jtho.2018.08.1897] [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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28
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Liam C, Ho G, Chai C, Bt Alip A, Pang Y. P1.15-15 Real-world Experience with Afatinib after Failure of First-Generation Epidermal Growth Factor Receptor-Tyrosine Kinase Inhibitor. J Thorac Oncol 2018. [DOI: 10.1016/j.jtho.2018.08.947] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [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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29
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Azhari H, Underwood F, King J, Coward S, Shah S, Ng S, Ho G, Chan C, Tang W, Kaplan GG. A36 THE GLOBAL INCIDENCE OF PEPTIC ULCER DISEASE AND ITS COMPLICATIONS AT THE TURN OF THE 21ST CENTURY: A SYSTEMATIC REVIEW. J Can Assoc Gastroenterol 2018. [DOI: 10.1093/jcag/gwy009.036] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- H Azhari
- Internal Medicine, University of Calgary, Calgary, AB, Canada
| | - F Underwood
- Internal Medicine, University of Calgary, Calgary, AB, Canada
| | - J King
- University of Calgary, Calgary, AB, Canada
| | - S Coward
- University of Calgary, Calgary, AB, Canada
| | - S Shah
- Vanderbilt University, Nashville, TN
| | - S Ng
- Chinese University of Hong Kong, Hong Kong, China
| | - G Ho
- Chinese University of Hong Kong, Hong Kong, China
| | - C Chan
- Chinese University of Hong Kong, Hong Kong, China
| | - W Tang
- Chinese University of Hong Kong, Hong Kong, China
| | - G G Kaplan
- Medicine and Community Health Sciences, University of Calgary, Calgary, AB, Canada
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30
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Elkeeb D, Rowe L, Kohan J, Yu W, Ho G, Salama M, Wada D. LB972 Characterization of collagen in normal and diseased skin using second harmonic generation and two photon excitation microscopy. J Invest Dermatol 2017. [DOI: 10.1016/j.jid.2017.07.050] [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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31
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Krummen DE, Lee D, Pasek T, Ho G, Villongco C, Feld G, Schricker AA, Hsu J, Hoffmayer KS. P1061Long term PVC ablation success varies by source location. Europace 2017. [DOI: 10.1093/ehjci/eux151.240] [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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32
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Nagaraj V, Skillman L, Li D, Xie Z, Ho G. Control of biofouling by xanthine oxidase on seawater reverse osmosis membranes from a desalination plant: enzyme production and screening of bacterial isolates from the full-scale plant. Lett Appl Microbiol 2017; 65:73-81. [DOI: 10.1111/lam.12747] [Citation(s) in RCA: 8] [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: 12/18/2016] [Revised: 03/20/2017] [Accepted: 04/11/2017] [Indexed: 12/16/2022]
Affiliation(s)
- V. Nagaraj
- School of Engineering and Information Technology; Murdoch University; Murdoch WA Australia
| | - L. Skillman
- School of Engineering and Information Technology; Murdoch University; Murdoch WA Australia
| | - D. Li
- School of Engineering and Information Technology; Murdoch University; Murdoch WA Australia
| | - Z. Xie
- School of Engineering and Information Technology; Murdoch University; Murdoch WA Australia
| | - G. Ho
- School of Engineering and Information Technology; Murdoch University; Murdoch WA Australia
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33
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Lin K, Tinker A, Kondrashova O, Ho G, Wakefield M, Coleman R, O'Malley D, Floquet A, Sun J, Maloney L, Giordano H, Harding T, Raponi M, McNeish I, Swisher E, Scott C. Secondary mutations in RAD51C and RAD51D are associated with acquired resistance to the PARP inhibitor rucaparib in patients with high-grade ovarian cancer. Eur J Cancer 2016. [DOI: 10.1016/s0959-8049(16)32627-2] [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: 11/16/2022]
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34
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Chew K, Carey K, Ho G, Mallitt KA, Widger J, Farrar M. The relationship of body habitus and respiratory function in Duchenne muscular dystrophy. Respir Med 2016; 119:35-40. [DOI: 10.1016/j.rmed.2016.08.018] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/15/2016] [Revised: 06/28/2016] [Accepted: 08/21/2016] [Indexed: 10/21/2022]
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35
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Rabbani KA, Charles W, Kayaalp A, Cord-Ruwisch R, Ho G. Biofilter for generation of concentrated sulphuric acid from H2S. Environ Sci Pollut Res Int 2016; 23:16781-16789. [PMID: 27189453 DOI: 10.1007/s11356-016-6858-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [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: 02/22/2016] [Accepted: 05/09/2016] [Indexed: 06/05/2023]
Abstract
Biofilters are used for the conversion of odorous hydrogen sulphide to odourless sulphate in wastewater treatment plants under the right conditions of moisture and pH. One of the consequences of maintaining the suitable pH and moisture content is the production of large volumes of weakly acidic leachate. This paper presents a biofilter with a maximum H2S elimination capacity of 16.3 g m(-3) h(-1) and removal efficiency greater than 95 % which produces small volumes (1 mL of solution L(-1) of reactor day(-1)) of sulphuric acid with a concentration greater than 5.5 M after 150 days of continuous operation. The concentrated sulphuric acid was produced by intermittently trickling a minimum amount of nutrient solution down the upflow biofilter which created a moisture and pH gradient within the biofilter resulting in an environment at the top for the bacterial conversion of H2S, while sulphuric acid was accumulated at the base. Genetic diversity profiling of samples taken from different sections of the biofilter confirms that the upper sections of the biofilter had the best environment for the bacteria to convert H2S to sulphate. The formation of concentrated sulphuric acid presents an opportunity for the recovery of sulphur from the waste stream as a usable product.
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Affiliation(s)
- K A Rabbani
- School of Engineering and Information Technology, Murdoch University, 90 South Street, Perth, WA, 6150, Australia.
| | - W Charles
- School of Engineering and Information Technology, Murdoch University, 90 South Street, Perth, WA, 6150, Australia
| | - A Kayaalp
- Water Corporation of Western Australia, 629 Newcastle St, Leederville, WA, 6009, Australia
| | - R Cord-Ruwisch
- School of Engineering and Information Technology, Murdoch University, 90 South Street, Perth, WA, 6150, Australia
| | - G Ho
- School of Engineering and Information Technology, Murdoch University, 90 South Street, Perth, WA, 6150, Australia
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36
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van Karnebeek CDM, Ho G, Houben RFA, Joa J, Ueda K. MG-135 Metabolic diet app suite: Digital medicine to support families with inborn errors of metabolism. J Med Genet 2015. [DOI: 10.1136/jmedgenet-2015-103577.25] [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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37
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Ho G, Cardamone M, Farrar M. Congenital and childhood myotonic dystrophy: Current aspects of disease and future directions. World J Clin Pediatr 2015; 4:66-80. [PMID: 26566479 PMCID: PMC4637811 DOI: 10.5409/wjcp.v4.i4.66] [Citation(s) in RCA: 49] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/20/2015] [Revised: 08/07/2015] [Accepted: 09/25/2015] [Indexed: 02/06/2023] Open
Abstract
Myotonic dystrophy type 1 (DM1) is multisystem disease arising from mutant CTG expansion in the non-translating region of the dystrophia myotonica protein kinase gene. While DM1 is the most common adult muscular dystrophy, with a worldwide prevalence of one in eight thousand, age of onset varies from before birth to adulthood. There is a broad spectrum of clinical severity, ranging from mild to severe, which correlates with number of DNA repeats. Importantly, the early clinical manifestations and management in congenital and childhood DM1 differ from classic adult DM1. In neonates and children, DM1 predominantly affects muscle strength, cognition, respiratory, central nervous and gastrointestinal systems. Sleep disorders are often under recognised yet a significant morbidity. No effective disease modifying treatment is currently available and neonates and children with DM1 may experience severe physical and intellectual disability, which may be life limiting in the most severe forms. Management is currently supportive, incorporating regular surveillance and treatment of manifestations. Novel therapies, which target the gene and the pathogenic mechanism of abnormal splicing are emerging. Genetic counselling is critical in this autosomal dominant genetic disease with variable penetrance and potential maternal anticipation, as is assisting with family planning and undertaking cascade testing to instigate health surveillance in affected family members. This review incorporates discussion of the clinical manifestations and management of congenital and childhood DM1, with a particular focus on hypersomnolence and sleep disorders. In addition, the molecular genetics, mechanisms of disease pathogenesis and development of novel treatment strategies in DM1 will be summarised.
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38
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Agarwal M, Nitta R, Dovat S, Li G, Arita H, Narita Y, Fukushima S, Tateishi K, Matsushita Y, Yoshida A, Miyakita Y, Ohno M, Collins VP, Kawahara N, Shibui S, Ichimura K, Kahn SA, Gholamin S, Junier MP, Chneiweiss H, Weissman I, Mitra S, Cheshier S, Avril T, Hamlat A, Le Reste PJ, Mosser J, Quillien V, Carrato C, Munoz-Marmol A, Serrano L, Pijuan L, Hostalot C, Villa SL, Ariza A, Etxaniz O, Balana C, Benveniste ET, Zheng Y, McFarland B, Drygin D, Bellis S, Bredel M, Lotsch D, Engelmaier C, Allerstorfer S, Grusch M, Pichler J, Weis S, Hainfellner J, Marosi C, Spiegl-Kreinecker S, Berger W, Bronisz A, Nowicki MO, Wang Y, Ansari K, Chiocca EA, Godlewski J, Brown K, Kwatra M, Brown K, Kwatra M, Bui T, Nitta R, Li G, Zhu S, Kozono D, Li J, Kushwaha D, Carter B, Chen C, Schulte J, Srikanth M, Das S, Zhang J, Lathia J, Yin L, Rich J, Olson E, Kessler J, Chenn A, Cherry A, Haas B, Lin YH, Ong SE, Stella N, Cifarelli CP, Griffin RJ, Cong D, Zhu W, Shi Y, Clark P, Kuo J, Hu S, Sun D, Bookland M, Darbinian N, Dey A, Robitaille M, Remke M, Faury D, Maier C, Malhotra A, Jabado N, Taylor M, Angers S, Kenney A, Ren X, Zhou H, Schur M, Baweja A, Singh M, Erdreich-Epstein A, Fu J, Koul D, Yao J, Saito N, Zheng S, Verhaak R, Lu Z, Yung WKA, Gomez G, Volinia S, Croce C, Brennan C, Cavenee W, Furnari F, Lopez SG, Qu D, Petritsch C, Gonzalez-Huarriz M, Aldave G, Ravi D, Rubio A, Diez-Valle R, Marigil M, Jauregi P, Vera B, Rocha AADL, Tejada-Solis S, Alonso MM, Gopal U, Isaacs J, Gruber-Olipitz M, Dabral S, Ramkissoon S, Kung A, Pak E, Chung J, Theisen M, Sun Y, Monrose V, Franchetti Y, Sun Y, Shulman D, Redjal N, Tabak B, Beroukhim R, Zhao J, Buonamici S, Ligon K, Kelleher J, Segal R, Haas B, Canton D, Diaz P, Scott J, Stella N, Hara K, Kageji T, Mizobuchi Y, Kitazato K, Okazaki T, Fujihara T, Nakajima K, Mure H, Kuwayama K, Hara T, Nagahiro S, Hill L, Botfield H, Hossain-Ibrahim K, Logan A, Cruickshank G, Liu Y, Gilbert M, Kyprianou N, Rangnekar V, Horbinski C, Hu Y, Vo C, Li Z, Ke C, Ru N, Hess KR, Linskey ME, Zhou YAH, Hu F, Vinnakota K, Wolf S, Kettenmann H, Jackson PJ, Larson JD, Beckmann DA, Moriarity BS, Largaespada DA, Jalali S, Agnihotri S, Singh S, Burrell K, Croul S, Zadeh G, Kang SH, Yu MO, Song NH, Park KJ, Chi SG, Chung YG, Kim SK, Kim JW, Kim JY, Kim JE, Choi SH, Kim TM, Lee SH, Kim SK, Park SH, Kim IH, Park CK, Jung HW, Koldobskiy M, Ahmed I, Ho G, Snowman A, Raabe E, Eberhart C, Snyder S, Agnihotri S, Gugel I, Remke M, Bornemann A, Pantazis G, Mack S, Shih D, Sabha N, Taylor M, Tatagiba M, Zadeh G, Krischek B, Schulte A, Liffers K, Kathagen A, Riethdorf S, Westphal M, Lamszus K, Lee JS, Xiao J, Patel P, Schade J, Wang J, Deneen B, Erdreich-Epstein A, Song HR, Leiss L, Gjerde C, Saed H, Rahman A, Lellahi M, Enger PO, Leung R, Gil O, Lei L, Canoll P, Sun S, Lee D, Ho ASW, Pu JKS, Zhang XQ, Lee NP, Dat PJR, Leung GKK, Loetsch D, Steiner E, Holzmann K, Spiegl-Kreinecker S, Pirker C, Hlavaty J, Petznek H, Hegedus B, Garay T, Mohr T, Sommergruber W, Grusch M, Berger W, Lukiw WJ, Jones BM, Zhao Y, Bhattacharjee S, Culicchia F, Magnus N, Garnier D, Meehan B, McGraw S, Hashemi M, Lee TH, Milsom C, Gerges N, Jabado N, Trasler J, Pawlinski R, Mackman N, Rak J, Maherally Z, Thorne A, An Q, Barbu E, Fillmore H, Pilkington G, Maherally Z, Tan SL, Tan S, An Q, Fillmore H, Pilkington G, Malhotra A, Choi S, Potts C, Ford DA, Nahle Z, Kenney AM, Matlaf L, Khan S, Zider A, Singer E, Cobbs C, Soroceanu L, McFarland BC, Hong SW, Rajbhandari R, Twitty GB, Gray GK, Yu H, Benveniste EN, Nozell SE, Minata M, Kim S, Mao P, Kaushal J, Nakano I, Mizowaki T, Sasayama T, Tanaka K, Mizukawa K, Nishihara M, Nakamizo S, Tanaka H, Kohta M, Hosoda K, Kohmura E, Moeckel S, Meyer K, Leukel P, Bogdahn U, Riehmenschneider MJ, Bosserhoff AK, Spang R, Hau P, Mukasa A, Watanabe A, Ogiwara H, Saito N, Aburatani H, Mukherjee J, Obha S, See W, Pieper R, Nakajima K, Hara K, Kageji T, Mizobuchi Y, Kitazato K, Fujihara T, Otsuka R, Kung D, Nagahiro S, Rajbhandari R, Sinha T, Meares G, Benveniste EN, Nozell S, Ott M, Litzenburger U, Rauschenbach K, Bunse L, Pusch S, Ochs K, Sahm F, Opitz C, von Deimling A, Wick W, Platten M, Peruzzi P, Chiocca EA, Godlewski J, Read R, Fenton T, Gomez G, Wykosky J, Vandenberg S, Babic I, Iwanami A, Yang H, Cavenee W, Mischel P, Furnari F, Thomas J, Ronellenfitsch MW, Thiepold AL, Harter PN, Mittelbronn M, Steinbach JP, Rybakova Y, Kalen A, Sarsour E, Goswami P, Silber J, Harinath G, Aldaz B, Fabius AWM, Turcan S, Chan TA, Huse JT, Sonabend AM, Bansal M, Guarnieri P, Lei L, Soderquist C, Leung R, Yun J, Kennedy B, Sisti J, Bruce S, Bruce R, Shakya R, Ludwig T, Rosenfeld S, Sims PA, Bruce JN, Califano A, Canoll P, Stockhausen MT, Kristoffersen K, Olsen LS, Poulsen HS, Stringer B, Day B, Barry G, Piper M, Jamieson P, Ensbey K, Bruce Z, Richards L, Boyd A, Sufit A, Burleson T, Le JP, Keating AK, Sundstrom T, Varughese JK, Harter P, Prestegarden L, Petersen K, Azuaje F, Tepper C, Ingham E, Even L, Johnson S, Skaftnesmo KO, Lund-Johansen M, Bjerkvig R, Ferrara K, Thorsen F, Takeshima H, Yamashita S, Yokogami K, Mizuguchi S, Nakamura H, Kuratsu J, Fukushima T, Morishita K, Tanaka H, Sasayama T, Tanaka K, Nakamizo S, Mizukawa K, Kohmura E, Tang Y, Vaka D, Chen S, Ponnuswami A, Cho YJ, Monje M, Tateishi K, Narita Y, Nakamura T, Cahill D, Kawahara N, Ichimura K, Tiemann K, Hedman H, Niclou SP, Timmer M, Tjiong R, Rohn G, Goldbrunner R, Timmer M, Tjiong R, Stavrinou P, Rohn G, Perrech M, Goldbrunner R, Tokita M, Mikheev S, Sellers D, Mikheev A, Kosai Y, Rostomily R, Tritschler I, Seystahl K, Schroeder JJ, Weller M, Wade A, Robinson AE, Phillips JJ, Gong Y, Ma Y, Cheng Z, Thompson R, Wang J, Fan QW, Cheng C, Gustafson W, Charron E, Zipper P, Wong R, Chen J, Lau J, Knobbe-Thosen C, Weller M, Jura N, Reifenberger G, Shokat K, Weiss W, Wu S, Fu J, Zheng S, Koul D, Yung WKA, Wykosky J, Hu J, Taylor T, Villa GR, Gomez G, Mischel PS, Gonias SL, Cavenee W, Furnari F, Yamashita D, Kondo T, Takahashi H, Inoue A, Kohno S, Harada H, Ohue S, Ohnishi T, Li P, Ng J, Yuelling L, Du F, Curran T, Yang ZJ, Zhu D, Castellino RC, Van Meir EG, Zhu W, Begum G, Wang Q, Clark P, Yang SS, Lin SH, Kahle K, Kuo J, Sun D. CELL BIOLOGY AND SIGNALING. Neuro Oncol 2013. [DOI: 10.1093/neuonc/not174] [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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Ho G, Sanchez MMA, Léonard P, Van Esbroeck M, Hayette MP. [Clinical case of the month. Amoebic liver abscess contracted in India with diagnosis confirmed by PCR]. Rev Med Liege 2013; 68:428-432. [PMID: 24053104] [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: 06/02/2023]
Abstract
Amoebiasis is a disease of parasitic origin responsible for dysentery and extra-intestinal complications. The infection is by Entamoeba histolytica, an amoeba whose geographical distribution is cosmopolitan, but that is more prevalent in tropical areas. Only a few infections are symptomatic and some of them may cause extra-intestinal complications. Hepatic amoebiasis is the most frequently observed. We report the case of a Belgian woman who developed an amoebic liver abscess after returning from a trip to India. The diagnosis was confirmed by PCR detection of E. histolytica DNA performed on the abscess fluid. The epidemiological, diagnosis and treatment aspects are discussed.
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Affiliation(s)
- G Ho
- Laboratoire de Microbiologie médicale, CHU de Liège, Belgique
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Ho G, Chan SWV, Lam PW, Chai J. Massive Ascites in Pregnancy: Meigs' Syndrome. Hong Kong J Radiol 2013. [DOI: 10.12809/hkjr1312085] [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: 11/05/2022] Open
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Ho G, Cheung KW, Lam HL, Ip JK, Tang HYM, Lam WWM. Echogenic and Cystic Fetal Lung Lesions: Evaluation by Prenatal Sonography and Postnatal Imaging. Hong Kong J Radiol 2013. [DOI: 10.12809/hkjr1312145] [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: 11/05/2022] Open
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Ho G, Wills A, Cranshaw J. Evaluation of a novel formula for prediction of arterial oxygen partial pressure after changes in F I O2. Br J Anaesth 2013; 110:312-3. [DOI: 10.1093/bja/aes483] [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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Charles W, Ng B, Cord-Ruwisch R, Cheng L, Ho G, Kayaalp A. Enhancement of waste activated sludge anaerobic digestion by a novel chemical free acid/alkaline pretreatment using electrolysis. Water Sci Technol 2013; 67:2827-2831. [PMID: 23787324 DOI: 10.2166/wst.2013.208] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Anaerobic digestion of waste activated sludge (WAS) is relatively poor due to hydrolysis limitations. Acid and alkaline pretreatments are effective in enhancing hydrolysis leading to higher methane yields. However, chemical costs often prohibit full-scale application. In this study, 12 V two-chamber electrolysis using an anion exchange membrane alters sludge pH without chemical dosing. pH dropped from 6.9 to 2.5 in the anode chamber and increased to 10.1 in the cathode chamber within 15 h. The volatile suspended solids solubilisation of WAS was 31.1% in the anode chamber and 34.0% in the cathode chamber. As a result, dissolved chemical oxygen demand increased from 164 to 1,787 mg/L and 1,256 mg/L in the anode and cathode chambers, respectively. Remixing of sludge from the two chambers brought the pH back to 6.5, hence no chemical neutralisation was required prior to anaerobic digestion. Methane yield during anaerobic digestion at 20 d retention time was 31% higher than that of untreated sludge. An energy balance assessment indicated that the non-optimised process could approximately recover the energy (electricity) expended in the electrolysis process. With suitable optimisation of treatment time and voltages, significant energy savings would be expected in addition to the benefit of decreased sludge volume.
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Affiliation(s)
- W Charles
- Faculty of Sciences & Engineering, Murdoch University, Murdoch, WA 6150, Australia.
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Ho L, Ho G. Mitigating ammonia inhibition of thermophilic anaerobic treatment of digested piggery wastewater: use of pH reduction, zeolite, biomass and humic acid. Water Res 2012; 46:4339-4350. [PMID: 22739499 DOI: 10.1016/j.watres.2012.05.016] [Citation(s) in RCA: 61] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/10/2011] [Revised: 04/29/2012] [Accepted: 05/08/2012] [Indexed: 06/01/2023]
Abstract
High free ammonia released during anaerobic digestion of livestock wastes is widely known to inhibit methanogenic microorganisms and result in low methane production. This was encountered during our earlier thermophilic semi-continuously fed continuously-stirred tank reactor (CSTR) treatment of piggery wastewater. This study explored chemical and biological means to mitigate ammonia inhibition on thermophilic anaerobic treatment of piggery wastewater with the aim to increase organic volatile carbon reduction and methane production. A series of thermophilic anaerobic batch experiments were conducted on the digested piggery effluent to investigate the effects of pH reduction (pH 8.3 to 7.5, 7.0 and 6.5) and additions of biomass (10% v/v and 19% v/v anaerobic digested piggery biomass and aerobic-anaerobic digested municipal biomass), natural zeolite (10, 15 and 20 g/L) and humic acid (1, 5 and 10 g/L) on methane production at 55 °C for 9-11 days. Reduction of the wastewater pH from its initial pH of 8.3 to 6.5 produced the greatest stimulation of methane production (3.4 fold) coupled with reductions in free ammonia (38 fold) and total volatile fatty acids (58% TVFA), particularly acetate and propionate. Addition of 10-20 g/L zeolite to piggery wastewater with and without pH reduction to 6.5 further enhanced total VFA reduction and methane production over their respective controls, with 20 g/L zeolite producing the highest enhancement effect despite the ammonia-nitrogen concentrations of the treated wastewaters remaining high. Without pH reduction, zeolite concentration up to 20 g/L was required to achieve comparable methane enhancement as the pH-reduced wastewater at pH 6.5. Although biomass (10% v/v piggery and municipal wastes) and low humic acid (1 and 5 g/L) additions enhanced total VFA reduction and methane production, they elevated the residual effluent total COD concentrations over the control wastewaters (pH-unadjusted and pH-reduced) unlike zeolite treatment. The outcomes from these batch experiments support the use of pH reduction to 6.5 and zeolite treatment (10-20 g/L) as effective strategies to mitigate ammonia inhibition of the thermophilic anaerobic treatment of piggery wastewater.
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Affiliation(s)
- L Ho
- School of Environmental Science, Murdoch University, 90 South Street, Murdoch, Perth WA 6163, Australia.
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Tan V, Tan B, Madhakumar P, Wong C, Ho G, Yong W. 496 Sentinel Lymph Node Biopsy After Neoadjuvant Chemotherapy for Breast Cancer – We Need to Define the Group of Patients Who Will Benefit. Eur J Cancer 2012. [DOI: 10.1016/s0959-8049(12)70561-0] [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: 11/30/2022]
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Van Schaik DE, Dolmans DEJG, Ho G, Geenen GP, Vos L, Van Der Waal JC, De Groot HG, Van Der Laan L. Ruptured abdominal aortic aneurysm: endovascular or open approach in a Dutch general hospital. J Cardiovasc Surg (Torino) 2011; 52:363-369. [PMID: 21577191] [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: 05/30/2023]
Abstract
AIM We compared the outcomes of 56 patients with a ruptured abdominal aortic aneurysm (RAAA) who underwent either open repair or emergency endovascular aneurysm repair (eEVAR) in a general hospital. It seems feasible that the availability of eEVAR for treatment of RAAA could lead to a decrease in hospital mortality. METHODS We analyzed all admitted patients with a RAAA, between January 2006 and April 2008, eEVAR is compared to open repair. We studied 30 days mortality, intensive care unit stay, hospital stay, total blood loss and complications. RESULTS Fifteen eEVAR procedures (26.8%) were performed. Mortality in the eEVAR-group was 26%, in the open repair-group 46%. Mean intensive care unit stay was 3.9 days and 4.8 days in the eEVAR-group and open repair-group, respectively. Mean hospital stay was 13 days and 10.5 days. The average blood loss was 210cc and 2760cc. The amount of blood products for transfusion was significantly higher in the open repair. Overall complication rate was not significantly different in both treatment groups. CONCLUSION Treatment in a Dutch general hospital of a RAAA with an eEVAR procedure has a lower mortality in comparison to the open repair. Therefore, whenever possible the eEVAR is the preferred treatment method.
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Affiliation(s)
- D E Van Schaik
- Department of Surgery, Amphia Hospital, Breda, The Netherlands.
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Ho G, Keutgens A, Schoofs R, Kotolenko S, Denooz R, Charlier C. Blood, urine, and hair kinetic analysis following an acute lead intoxication. J Anal Toxicol 2011; 35:60-4. [PMID: 21219705 DOI: 10.1093/anatox/35.1.60] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
A case of lead exposure resulting from the accidental ingestion of a lead-containing solution is reported. Because of clinical management rapidly performed through chelation therapy by 2,3-dimercaptopropane sulfonate sodium and meso-2,3-dimercaptosuccinic acid, blood lead levels of this 51-year-old patient were moderate (412.9 μg/L) and no clinical symptoms were observed. Numerous blood and urine samples were collected for kinetic analysis of lead elimination. However, we report the first case in which hair samples were analyzed to determine the excretion level of lead after acute intoxication.
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Affiliation(s)
- G Ho
- Service de Toxicologie Clinique, Médicolégale, Environnementale et en Entreprise, Centre Interfacultaire de Recherche du Médicament, ULg, Centre Hospitalier Universitaire Sart-Tilman B35, B-4000 Liège, Belgium
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te Slaa A, Mulder P, Dolmans D, Castenmiller P, Ho G, van der Laan L. Reliability and reproducibility of a clinical application of a simple technique for repeated circumferential leg measurements. Phlebology 2010; 26:14-9. [DOI: 10.1258/phleb.2009.009073] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Objective The aim of this study is to determine the reliability and reproducibility of repeated tape measurements to assess the leg circumference during a long period. Methods A tape measure is a simple instrument that is applicable in the presence of oedema. Measurements were performed by four observers on 11 volunteers. Four measurements were done in the first week (short term), a fifth measurement at two weeks (medium term) and a sixth measurement was done at 12 weeks (long term). Results The short-, medium- and long-term intra-class correlation coefficients for repeated measurements were 0.90, 0.89 and 0.78, respectively. The short-term and long-term reproducibility indices equalled 4.4% and 6.5%. If only a single observer would be involved, the short-term intra-class correlation coefficients would improve to 0.94 (reproducibility index 3.3%). Conclusion Tape measurements have been proved to be a reliable and reproducible method to asses the lower limb circumference.
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Affiliation(s)
- A te Slaa
- Department of Surgery, Amphia Hospital, Breda, The Netherlands
| | - P Mulder
- Department of Biostatistics, Erasmus University Medical Centre, Rotterdam, The Netherlands
| | - D Dolmans
- Department of Surgery, Amphia Hospital, Breda, The Netherlands
| | - P Castenmiller
- Department of Surgery, Amphia Hospital, Breda, The Netherlands
| | - G Ho
- Department of Surgery, Amphia Hospital, Breda, The Netherlands
| | - L van der Laan
- Department of Surgery, Amphia Hospital, Breda, The Netherlands
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Chan MK, Chan JM, Ang P, Lee W, Ho Y, Ho G, Lee AS. BRCA1 and BRCA2 mutational spectrum of an Asian population. J Clin Oncol 2010. [DOI: 10.1200/jco.2010.28.15_suppl.e12003] [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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Kumar S, Ho G, Zhang Y, Zhuo L. In vivo imaging of retinal gliosis: a platform for diagnosis of PD and Screening of anti-PD compounds. Annu Int Conf IEEE Eng Med Biol Soc 2010; 2010:3049-3052. [PMID: 21095732 DOI: 10.1109/iembs.2010.5626122] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Parkinson's disease (PD) is the second most frequent degenerative disorder after Alzheimer's disease. It is characterized by the depletion of mesenchephalic dopaminergic (DA) neurons in the substantia nigra pars compacta (SNpc) and striatal dopamine. Oxidative stress plays a major role in the pathogenesis of Parkinson's disease where DA neurons are especially vulnerable to excessive production of the H2O2 reactive oxygen species. Unfortunately, the first clinical symptoms of PD occur after at least 60-80% of nigro-striatal dopaminergic neurons have lost their function. Therefore, early detection of PD is critical in slowing down the progression of the disease and enabling the development of therapeutic compounds which could intervene at an earlier stage. Here, we employ in vivo molecular imaging of astrocytic retinal gliosis in a transgenic mice to longitudinally monitor the progression of MPTP-induced PD. We have quantitatively evaluated, via this imaging platform, the efficacy of a synthetic antioxidant, 1,3- bisbenzylimidazolium bromide (DBZIM), in protecting the DA neurons and scavenging the ROS. We show here that MPTPinduced PD results in an upregulation of glial fibrillary acidic protein (GFAP), a marker for gliosis, by 36% relative to saline whereas gliosis is normalized in MPTP-induced PD mice treated with DBZIM.
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Affiliation(s)
- S Kumar
- Institute of Bioengineering and Nanotechnology, 31 Biopolis Way, Singapore 138669.
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