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Fokkens WJ, Lund VJ, Hopkins C, Hellings PW, Kern R, Reitsma S, Toppila-Salmi S, Bernal-Sprekelsen M, Mullol J, Alobid I, Terezinha Anselmo-Lima W, Bachert C, Baroody F, von Buchwald C, Cervin A, Cohen N, Constantinidis J, De Gabory L, Desrosiers M, Diamant Z, Douglas RG, Gevaert PH, Hafner A, Harvey RJ, Joos GF, Kalogjera L, Knill A, Kocks JH, Landis BN, Limpens J, Lebeer S, Lourenco O, Meco C, Matricardi PM, O'Mahony L, Philpott CM, Ryan D, Schlosser R, Senior B, Smith TL, Teeling T, Tomazic PV, Wang DY, Wang D, Zhang L, Agius AM, Ahlstrom-Emanuelsson C, Alabri R, Albu S, Alhabash S, Aleksic A, Aloulah M, Al-Qudah M, Alsaleh S, Baban MA, Baudoin T, Balvers T, Battaglia P, Bedoya JD, Beule A, Bofares KM, Braverman I, Brozek-Madry E, Richard B, Callejas C, Carrie S, Caulley L, Chussi D, de Corso E, Coste A, El Hadi U, Elfarouk A, Eloy PH, Farrokhi S, Felisati G, Ferrari MD, Fishchuk R, Grayson W, Goncalves PM, Grdinic B, Grgic V, Hamizan AW, Heinichen JV, Husain S, Ping TI, Ivaska J, Jakimovska F, Jovancevic L, Kakande E, Kamel R, Karpischenko S, Kariyawasam HH, Kawauchi H, Kjeldsen A, Klimek L, Krzeski A, Kopacheva Barsova G, Kim SW, Lal D, Letort JJ, Lopatin A, Mahdjoubi A, Mesbahi A, Netkovski J, Nyenbue Tshipukane D, Obando-Valverde A, Okano M, Onerci M, Ong YK, Orlandi R, Otori N, Ouennoughy K, Ozkan M, Peric A, Plzak J, Prokopakis E, Prepageran N, Psaltis A, Pugin B, Raftopulos M, Rombaux P, Riechelmann H, Sahtout S, Sarafoleanu CC, Searyoh K, Rhee CS, Shi J, Shkoukani M, Shukuryan AK, Sicak M, Smyth D, Sindvongs K, Soklic Kosak T, Stjarne P, Sutikno B, Steinsvag S, Tantilipikorn P, Thanaviratananich S, Tran T, Urbancic J, Valiulius A, Vasquez de Aparicio C, Vicheva D, Virkkula PM, Vicente G, Voegels R, Wagenmann MM, Wardani RS, Welge-Lussen A, Witterick I, Wright E, Zabolotniy D, Zsolt B, Zwetsloot CP. European Position Paper on Rhinosinusitis and Nasal Polyps 2020. Rhinology 2020; 58:1-464. [PMID: 32077450 DOI: 10.4193/rhin20.600] [Citation(s) in RCA: 573] [Impact Index Per Article: 143.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
The European Position Paper on Rhinosinusitis and Nasal Polyps 2020 is the update of similar evidence based position papers published in 2005 and 2007 and 2012. The core objective of the EPOS2020 guideline is to provide revised, up-to-date and clear evidence-based recommendations and integrated care pathways in ARS and CRS. EPOS2020 provides an update on the literature published and studies undertaken in the eight years since the EPOS2012 position paper was published and addresses areas not extensively covered in EPOS2012 such as paediatric CRS and sinus surgery. EPOS2020 also involves new stakeholders, including pharmacists and patients, and addresses new target users who have become more involved in the management and treatment of rhinosinusitis since the publication of the last EPOS document, including pharmacists, nurses, specialised care givers and indeed patients themselves, who employ increasing self-management of their condition using over the counter treatments. The document provides suggestions for future research in this area and offers updated guidance for definitions and outcome measurements in research in different settings. EPOS2020 contains chapters on definitions and classification where we have defined a large number of terms and indicated preferred terms. A new classification of CRS into primary and secondary CRS and further division into localized and diffuse disease, based on anatomic distribution is proposed. There are extensive chapters on epidemiology and predisposing factors, inflammatory mechanisms, (differential) diagnosis of facial pain, allergic rhinitis, genetics, cystic fibrosis, aspirin exacerbated respiratory disease, immunodeficiencies, allergic fungal rhinosinusitis and the relationship between upper and lower airways. The chapters on paediatric acute and chronic rhinosinusitis are totally rewritten. All available evidence for the management of acute rhinosinusitis and chronic rhinosinusitis with or without nasal polyps in adults and children is systematically reviewed and integrated care pathways based on the evidence are proposed. Despite considerable increases in the amount of quality publications in recent years, a large number of practical clinical questions remain. It was agreed that the best way to address these was to conduct a Delphi exercise . The results have been integrated into the respective sections. Last but not least, advice for patients and pharmacists and a new list of research needs are included. The full document can be downloaded for free on the website of this journal: http://www.rhinologyjournal.com.
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Shugman I, Tran T, Broyd P, Nguyen N, Nguyen T, Premawardhana U. 796 Atrioventricular Accessory Pathway Radiofrequency Catheter Ablation - a Single Centre Experience. Heart Lung Circ 2020. [DOI: 10.1016/j.hlc.2020.09.803] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Shugman I, Tran T, Broyd P, Dang V, Nguyen T, Premawardhana U. 797 Cardiac Invasive Electrophysiology Studies and Radiofrequency Catheter Ablation - Single Centre Experience. Heart Lung Circ 2020. [DOI: 10.1016/j.hlc.2020.09.804] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Alarkawi D, Bliuc D, Tran T, Ahmed LA, Emaus N, Bjørnerem A, Jørgensen L, Christoffersen T, Eisman JA, Center JR. Impact of osteoporotic fracture type and subsequent fracture on mortality: the Tromsø Study. Osteoporos Int 2020; 31:119-130. [PMID: 31654084 DOI: 10.1007/s00198-019-05174-5] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/04/2019] [Accepted: 09/18/2019] [Indexed: 11/25/2022]
Abstract
UNLABELLED Less is known about the impact of non-hip non-vertebral fractures (NHNV) on early death. This study demonstrated increased risk of dying following hip and NHNV fractures which was further increased by a subsequent fracture. This highlights the importance of early intervention to prevent both initial and subsequent fractures and improve survival. INTRODUCTION Osteoporotic fractures are a major health concern. Limited evidence exists on their impact on mortality in ageing populations. This study examined the contribution of initial fracture type and subsequent fracture on mortality in a Norwegian population that has one of the highest rates of fractures. METHODS The Tromsø Study is a prospective population-based cohort in Norway. Women and men aged 50+ years were followed from 1994 to 2010. All incident hip and non-hip non-vertebral (NHNV) fractures were registered. NHNV fractures were classified as either proximal or distal. Information on self-reported co-morbidities, lifestyle factors, general health and education level was collected. Multivariable Cox models were used to quantify mortality risk with incident and subsequent fractures analysed as time-dependent variables. RESULTS Of 5214 women and 4620 men, 1549 (30%) and 504 (11%) sustained a fracture, followed by 589 (38%) and 254 (51%) deaths over 10,523 and 2821 person-years, respectively. There were 403 (26%) subsequent fractures in women and 68 (13%) in men. Hip fracture was associated with a two-fold increase in mortality risk (HR 2.05, 95% CI 1.73-2.42 in women and 2.49, 95% CI 2.00-3.11 in men). Proximal NHNV fractures were associated with 49% and 81% increased mortality risk in women and men (HR 1.49, 95% CI 1.21-1.84 and 1.81, 95% CI 1.37-2.41), respectively. Distal NHNV fractures were not associated with mortality. Subsequent fracture was associated with 89% and 77% increased mortality risk in women and men (HR 1.89, 95% CI 1.52-2.35 and 1.77, 95% CI 1.16-2.71), respectively. CONCLUSION Hip, proximal NHNV and subsequent fractures were significantly associated with increased mortality risk in the elderly, highlighting the importance of early intervention.
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Tran T, Al-Fahali Z, Tessa Pei-Yi L, Kachwalla H, Shugman I, Dang V, Vijayarajan V, Premawardhana U. 285 An Unusual Cause of Shortness of Breath. Heart Lung Circ 2020. [DOI: 10.1016/j.hlc.2020.09.292] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Tran T, Lafarge C, Pradelles R, Perrier-Cornet JM, Cayot N, Loupiac C. Effect of high hydrostatic pressure on the structure of the soluble protein fraction in Porphyridium cruentum extracts. INNOV FOOD SCI EMERG 2019. [DOI: 10.1016/j.ifset.2019.102226] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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Parmar A, Tomlins K, Sanni L, Omohimi C, Thomas F, Tran T. Exposure to air pollutants and heat stress among resource-poor women entrepreneurs in small-scale cassava processing. ENVIRONMENTAL MONITORING AND ASSESSMENT 2019; 191:693. [PMID: 31667634 DOI: 10.1007/s10661-019-7811-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/29/2019] [Accepted: 09/11/2019] [Indexed: 06/10/2023]
Abstract
Exposure to air pollutants and heat stress from traditional cooking fires is the leading cause of mortality and morbidity in low- and middle-income countries globally and have an adverse effect on the environment. According to the World Health Organization, 3.8 million people die annually prematurely from illness related to household air pollution. Families living in poverty are at the highest risk, especially women and children. In this study, exposure to particulate matter (PM2.5 and PM10), carbon monoxide (CO) and nitrogen dioxide (NO2) was measured among resource-poor women cassava processors. The test locations were chosen in the peri-urban settlements of Abeokuta in the Ogun State of Nigeria, where household women entrepreneurs roast garri (granulated cassava) for sale in the local market. The measurements were taken for two types of stoves which are generally existing in the study location. First, a rectangular stove (RS) with two operators and, second, a circular stove (CS) with one operator; both stoves used wood as fuel. The emissions were compared with a modern mechanical liquefied petroleum gas burner-based garri roaster (GS). Hours spent per day in front of garri stoves ranged from 6 to 12 h for both stoves, with a frequency of 1 to 3 days of operation per week. It was found that CS operators were spending significantly more time in producing garri, which is due to the low capacity of the CS. The average PM2.5 concentrations for RS and CS were 381 and 273 μg/m3, respectively, estimated to be 21 and 41 μg/m3 on an annual mean level basis. Similarly, for PM10, the mean concentration levels were 1580 and 594 μg/m3 for RS and CS, respectively. The annual mean levels for PM10 were about 89 μg/m3 for both types of stoves. CO exposure during garri processing was up to five times higher than the recommended concentrations with a 4-h mean of 48 and 50 mg/m3 for RS and CS, respectively. NO2 levels were very low, ~ 0 ppm. This investigative research concluded that wood-fired small-scale garri producers in Nigeria are exposed to very unhealthy levels of PM, CO and thermal stress. The concentration levels of both PM and CO were exceeding the global as well as Nigerian ambient air quality standard regulations. Along with air pollution, thermal stress was a significant issue, which is known to exacerbate the negative effect of air pollution on the human body.
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Ahmed M, Tegnebratt T, Tran T, Damberg P, Bone D, Lu L, Gistera A, Tarnawski L, Hedin U, Eriksson P, Holmin S, Gustafsson B, Caidahl K. P1217Zirconium-89 labelled probe for molecular imaging of inflammation in experimental atherosclerosis. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz748.0176] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Background
Early detection of inflamed atherosclerotic lesions by molecular imaging might improve risk assessment beyond that of vascular stenosis and plaque morphology imaging, and improve the clinical management of high-risk patients.
Purpose
To target the key features of unstable atherosclerotic lesions, we studied the feasibility of our radiotracer, based on modified human serum albumin (HSA), to identify inflamed atherosclerotic lesions by in vivo molecular imaging.
Methods
We applied a maleylated HSA (Mal-HSA) probe, recognised by scavenger receptors on macrophages, in an experimental in vivo imaging study of atherosclerosis. Mal-HSA was coupled with a positron-emittingmetal ion, Zirconium-89 (89Zr). The targeting potential of this probe was evaluated and compared with unspecific 89Zr-HSA and 18F-FDG in a mouse model of atherosclerosis (Apoe−/−, n=22) and compared with wild-type (WT) mice (C57BL/6, n=21) as controls. Radiotracer accumulation in the aortic arch was analysed in vivo by the fusion of positron emission tomography–magnetic resonance imaging (PET-MRI), radiotracer bio-distribution was measured ex vivo by gamma counter, and plaque uptake was evaluated by phosphor imaging (PI) autoradiography (ARG).
Results
PET-MRI, gamma counter measurements, and PI-ARG showed the accumulation of 89Zr-Mal-HSA in the atherosclerotic lesions of Apoe−/− mice. The maximum standardised uptake value (SUVmax) for 89Zr-Mal-HSA at 16 and 20 weeks were 26% and 20% higher (P<0.05) in Apoe−/− mice than control WT mice, whereas no difference in SUVmax was found for 18F-FDG in the same animals. 89Zr-Mal-HSA uptake in the aorta as evaluated by gamma counter 48 h post-injection was 32% higher (P<0.01) for Apoe−/− mice compared to WT mice, and the aorta-to-blood ratio was 10-fold higher (P<0.001) for 89Zr-Mal-HSA compared with unspecific 89Zr-HSA. HSA probes were mainly distributed to the liver, spleen, kidneys, bone and lymph nodes. The PI-ARG results corroborated the PET and gamma counter measurements, showing higher accumulation of 89Zr-Mal-HSA in the aortas of Apoe−/− mice compared to WT mice; 9.4±1.4 vs 0.8±0.3% (P<0.001).
Conclusions
The modified HSA-based radiotracer showed in vivo targeting of inflamed atherosclerotic lesions of mouse aorta, which could also be verified ex vivo. 89Zr-Mal-HSA seems to be a promising diagnostic tool for the identification of vascular inflammation. Further methodological studies are needed to verify its applicability for detecting rupture-prone plaques.
Acknowledgement/Funding
Swedish Research Council (22036); the Swedish HLF (20150423, 20170669); ALF (20150517, 447561, 726481); Söderberg Foundations, VINNOVA and KI
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Yan S, Mojica J, Barbee D, Harrison L, Gamez M, Tam M, Concert C, Li Z, Culliney B, Jacobson A, Persky M, DeLacure M, Persky M, Tran T, Givi B, Hu K. De-escalation in HPV Era: Definitive Unilateral Neck Radiation for T3 or N2b/N3 p16+ Tonsil Squamous Cell Carcinoma Using Prospectively Defined Criteria. Int J Radiat Oncol Biol Phys 2019. [DOI: 10.1016/j.ijrobp.2019.06.1550] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Tran T, Lafarge C, Winckler P, Pradelles R, Cayot N, Loupiac C. Ex situ and in situ investigation of protein/exopolysaccharide complex in Porphyridium cruentum biomass resuspension. ALGAL RES 2019. [DOI: 10.1016/j.algal.2019.101544] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Tran T, Tran H. MON-224 DIAGNOSING RENAL THROMBOTIC MICROANGIOPATHY BASED ON HISTOPATHOLOGY IN RAPIDLY PROGRESSIVE RENAL FAILURE. Kidney Int Rep 2019. [DOI: 10.1016/j.ekir.2019.05.1025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022] Open
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Segarra‐Martí J, Tran T, Bearpark MJ. Computing the Ultrafast and Radiationless Electronic Excited State Decay of Cytosine and 5‐methyl‐cytosine Cations: Uncovering the Role of Dynamic Electron Correlation. CHEMPHOTOCHEM 2019. [DOI: 10.1002/cptc.201900105] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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Nota CLMA, Hagendoorn J, Borel Rinkes IHM, van der Harst E, Te Riele WW, van Santvoort HC, Tran T, Coene PLO, Groot Koerkamp B, Molenaar IQ. [Robot-assisted Whipple resection; results of the first 100 procedures in the Netherlands]. NEDERLANDS TIJDSCHRIFT VOOR GENEESKUNDE 2019; 163:D3682. [PMID: 31283118] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
OBJECTIVE Investigation into the results of robot-assisted Whipple resection in the Netherlands. These results were compared with those of open Whipple procedures on the basis of recent large case series of patients. DESIGN Case series of patients and systematic literature review. METHOD We carried out a post hoc analysis of prospectively collected data on the first 100 consecutive patients who underwent robot-assisted Whipple procedures in the period from March 2016 until March 2018 at the Erasmus MC, the Maasstad hospital or the Regional Academic Cancer Centre Utrecht. We were mainly interested in surgery characteristics and postoperative outcomes. We compared our results with those of case series of patients with more than 500 open Whipple procedures carried out in a single hospital, published in the last 5 years. RESULTS There were one or more serious complications in 22 patients (22%) and 2 patients (2%) developed multiple organ failure. 7 patients (7%) underwent reoperation. There was no postoperative mortality. In 14 case series (n = 12,708), complications occurred in 38% of patients and 7% of patients underwent reoperation. Mean mortality rate was 3%. CONCLUSION Our findings show that robotic Whipple procedures can be carried out safely in the Netherlands. The number of complications and mortality rates are comparable with results of large case series of patients who underwent open Whipple procedures in a centre of expertise.
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Tran T, Segarra-Martí J, Bearpark MJ, Robb MA. Molecular Vertical Excitation Energies Studied with First-Order RASSCF (RAS[1,1]): Balancing Covalent and Ionic Excited States. J Phys Chem A 2019; 123:5223-5230. [PMID: 31150228 PMCID: PMC7007262 DOI: 10.1021/acs.jpca.9b03715] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
![]()
RASSCF
calculations of vertical excitation energies were carried
out on a benchmark set of 19 organic molecules studied by Thiel and
co-workers [2008, 128, 13411018397056]. The best results, in comparison with the MS-CASPT2 results of
Thiel, were obtained using a RASSCF space that contains at most one
hole and one particle in the RAS1 and RAS3 spaces, respectively, which
we denote as RAS[1,1]. This subset of configurations recovers mainly
the effect of polarization and semi-internal electronic correlation
that is only included in CASSCF in an averaged way. Adding all-external
correlation by allowing double excitations from RAS1 and RAS2 into
RAS3 did not improve the results, and indeed, they were slightly worse.
The accuracy of the first-order RASSCF computations is demonstrated
to be a function of whether the state of interest can be classified
as covalent or ionic in the space of configurations built from orbitals
localized onto atomic sites. For covalent states, polarization and
semi-internal correlation effects are negligible (RAS[1,1]), while
for ionic states, these effects are large (because of inherent diffusiveness
of these states compared to the covalent states) and, thus, an acceptable
agreement with MS-CASPT2 can be obtained using first-order RASSCF
with the extra basis set involving 3p orbitals in most cases. However,
for those ionic states that are quasi-degenerate with a Rydberg state
or for nonlocal nπ* states, there remains a significant error
resulting from all external correlation effects.
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Advani R, Bartlett N, Smith S, Roschewski M, Popplewell L, Flinn I, Collins G, Ghosh N, LaCasce A, Asch A, Kline J, Kesevan M, Tran T, Lynn J, Huang J, Agoram B, Volkmer J, Takimoto C, Chao M, Mehta A. THE FIRST-IN-CLASS ANTI-CD47 ANTIBODY HU5F9-G4 + RITUXIMAB INDUCES DURABLE RESPONSES IN RELAPSED/REFRACTORY DLBCL AND INDOLENT LYMPHOMA: INTERIM PHASE 1B/2 RESULTS. Hematol Oncol 2019. [DOI: 10.1002/hon.57_2629] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Tran T, Pannu M, Liggins S. Case report: a paediatric patient with bell's palsy. Int J Oral Maxillofac Surg 2019. [DOI: 10.1016/j.ijom.2019.03.891] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Tran T, Yousefi YH, Singh M. Fish hook injury of the cheek. Int J Oral Maxillofac Surg 2019. [DOI: 10.1016/j.ijom.2019.03.116] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Tran T, Mumtaz S, Singh M. Intralingual dermoid cyst mimicking ranula: importance of special investigations. Int J Oral Maxillofac Surg 2019. [DOI: 10.1016/j.ijom.2019.03.322] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Hamrang-Yousefi Y, Tran T, Mumtaz S. Pressure ulcers: when prevention is key. Int J Oral Maxillofac Surg 2019. [DOI: 10.1016/j.ijom.2019.03.713] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Chiu WK, Ong WH, Russ M, Tran T, Fitzgerald M. Effects of mass loading on the viability of assessing the state of healing of a fixated fractured long bone. J Rehabil Assist Technol Eng 2019; 6:2055668319842806. [PMID: 31245035 PMCID: PMC6582286 DOI: 10.1177/2055668319842806] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2017] [Accepted: 03/15/2019] [Indexed: 11/17/2022] Open
Abstract
Introduction This paper aims to evaluate the effects of mass loading on the healing assessment of an internally fixated femur by vibrational means. The presence of soft tissue surrounding a femur increases damping and mass of a system, and hence affects the vibrational response of a mechanical structure by obscuring the coherent modes. This may compromise vibration-based monitoring strategies in identifying modes associated with fracture healing. Methods This paper presents a series of experimental works to address this issue. Two osteotomised composite femurs were internally fixated using a plate-screw system and an intramedullary nail. Soft tissue is approximated by surrounding an artificial Sawbone femur with modelling clay. The femur is excited by an instrumented impact hammer and instrumented with two accelerometers to record bending and torsion modes between 0 and 600 Hz. A 30-min epoxy was applied to simulate the healing of the fractured femur in the osteotomised region. The resonant frequencies and its modes are monitored while union is being formed and a healing index is calculated at various times to quantify the degree of healing. Results The results demonstrate that the effect of modelling clay compressed the natural modes along the frequency axis. It is observed that frequency bandwidth in the vicinity of 150 Hz and 500 Hz is sensitive to the state of healing of the fixated femurs, which is due to the increase in stiffness of the osteotomised region. These findings were used to formulate the healing index which assists in identifying the initial, later and complete healing stages in conjunction with the index derivative. Conclusion In this study, a two-sensor measurement strategy to quantify fixated femur healing is investigated. It is shown that the mass loading effect did not affect this vibrational analysis method ability to assess the state of healing, and both coherent bending and twisting modes associated with healing were easily identified. The proposed healing index, its derivative, and the cross-spectra are a viable tool for quantitative healing assessment.
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Bliuc D, Tran T, van Geel T, Adachi JD, Berger C, van den Bergh J, Eisman JA, Geusens P, Goltzman D, Hanley DA, Josse RG, Kaiser S, Kovacs CS, Langsetmo L, Prior JC, Nguyen TV, Center JR. Mortality risk reduction differs according to bisphosphonate class: a 15-year observational study. Osteoporos Int 2019; 30:817-828. [PMID: 30607457 DOI: 10.1007/s00198-018-4806-0] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/19/2018] [Accepted: 12/11/2018] [Indexed: 11/26/2022]
Abstract
UNLABELLED In this prospective cohort of 6120 participants aged 50+, nitrogen-bisphosphonates but not non-nitrogen bisphosphonates were associated with a significant 34% mortality risk reduction compared to non-treated propensity score matched controls. These findings open new avenues for research into mechanistic pathways. INTRODUCTION Emerging evidence suggests that bisphosphonates (BP), first-line treatment of osteoporosis, are associated with reduced risks for all-cause mortality. This study aimed to determine the association between different BP types and mortality risk in participants with or without a fracture. METHODS A prospective cohort study of users of different BPs matched to non-users by propensity score (age, gender, co-morbidities, fragility fracture status) and time to starting the BP medication from the population-based Canadian Multicentre Osteoporosis Study from nine Canadian centres followed from 1995 to 2013. Mortality risk for bisphosphonate users vs matched non-users was assessed using pairwise multivariable Cox proportional hazards models. RESULTS There were 2048 women and 308 men on BP and 1970 women and 1794 men who did not receive medication for osteoporosis. The relationship between BP and mortality risk was explored in three separate 1:1 propensity score-matched cohorts of BP users and no treatment (etidronate, n = 599, alendronate, n = 498, and risedronate n = 213). Nitrogen BP (n-BP) (alendronate and risedronate) was associated with lower mortality risks [pairwise HR, 0.66 (95% CI, 0.48-0.91)] while the less potent non-n-BP, etidronate, was not [pairwise HR: 0.89 (95% CI, 0.66-1.20)]. A direct comparison between n-BP and etidronate (n = 340 pairs) also suggested a better survival for n-BP [paired HR, 0.47 (95%CI, (95% CI, 031-0.70)] for n-BP vs. etidronate]. CONCLUSION Compared to no treatment, nitrogen but not non-nitrogen bisphosphonates appear to be associated with better survival.
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Cornwell W, Coe G, Levy A, Tran T, Bradley M, O'Gean K, Ostertag M, Spotts M, Laing S, Lawley J, DeSouza C, Stauffer B, Ambardekar A, Pal J, Wolfel G, Kohrt W. New Insights into Right Ventricular Function among Patients with Left Ventricular Assist Devices Using High Fidelity Conductance Catheters to Generate Real Time Pressure Volume Loops. J Heart Lung Transplant 2019. [DOI: 10.1016/j.healun.2019.01.031] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
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Tran T, Coe G, Bradley M, O'Gean K, Spotts M, Ostertag M, Laing S, Prado L, Cornwell C, Paul J, Cornwell W. Cardiac and Cerebrovascular Response to Exercise in the Setting of Mechanical Circulatory Support among Individuals with Advanced Heart Failure. J Heart Lung Transplant 2019. [DOI: 10.1016/j.healun.2019.01.361] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022] Open
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99
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Tran T, Denimal E, Lafarge C, Journaux L, Lee JA, Winckler P, Perrier-Cornet JM, Pradelles R, Loupiac C, Cayot N. Effect of high hydrostatic pressure on extraction of B-phycoerythrin from Porphyridium cruentum: Use of confocal microscopy and image processing. ALGAL RES 2019. [DOI: 10.1016/j.algal.2018.101394] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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100
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Monthe OC, Grosmaire L, Nguimbou RM, Dahdouh L, Ricci J, Tran T, Ndjouenkeu R. Rheological and textural properties of gluten-free doughs and breads based on fermented cassava, sweet potato and sorghum mixed flours. Lebensm Wiss Technol 2019. [DOI: 10.1016/j.lwt.2018.11.051] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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