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O'Connor AH, Shalloo L, Bokkers EAM, de Boer IJM, Hogeveen H, Sayers R, Byrne N, Ruelle E. Modeling the economic impacts of mobility scores in dairy cows under Irish spring pasture-based management. J Dairy Sci 2023; 106:1218-1232. [PMID: 36460509 DOI: 10.3168/jds.2021-21531] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2021] [Accepted: 07/28/2022] [Indexed: 11/30/2022]
Abstract
Moderate to severe forms of suboptimal mobility on dairy cows are associated with yield losses, whereas mild forms of suboptimal mobility are associated with elevated somatic cell count and an increased risk to be culled. Although the economic consequences of severe forms of suboptimal mobility (also referred as clinical lameness) have been studied extensively, the mild forms are generally ignored. Therefore, the aim of the current study was to determine the economic consequences associated with varying prevalence and forms of suboptimal mobility within spring calving, pasture-based dairy herds. A new submodel predicting mobility scores was developed and integrated within an existing pastured-based herd dynamic model. Using a daily timestep, this model simulates claw disorders, and the consequent mobility score of individual cows. The impact of a cow having varying forms of suboptimal mobility on production and reproduction was simulated. The economic impact was simulated including treatment costs, as well as the production and reproductive impacts of varying levels of suboptimal mobility. Furthermore, different genetic predispositions for mobility issues and their interaction with herd-level management associated with each level of suboptimal mobility were simulated. Overall, 13 scenarios were simulated, representing a typical spring calving, pasture-based dairy herd with 100 cows. The first scenario represents a perfect herd wherein 100% of the cows had mobility score 0 (optimal mobility) throughout the lactation. The remaining 12 scenarios represent a combination of (1) 3 different herd-management levels, and (2) 4 different levels of a genetic predisposition for suboptimal mobility. The analysis showed that a 17% decrease in farm net profit was achieved in the worst outcome (wherein just 5% of the herd had optimal mobility) compared with the perfect herd. This was due to reduced milk yield, increased culling, and increased treatment costs for mobility issues compared the ideal scenario.
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Affiliation(s)
- A H O'Connor
- Teagasc, Animal and Grassland Research and Innovation Centre, Moorepark, P61C996 Fermoy, Co. Cork, Ireland; VistaMilk Research Centre, Animal and Grassland Research and Innovation Centre, Moorepark, P61C996 Fermoy, Co. Cork, Ireland
| | - L Shalloo
- Teagasc, Animal and Grassland Research and Innovation Centre, Moorepark, P61C996 Fermoy, Co. Cork, Ireland; VistaMilk Research Centre, Animal and Grassland Research and Innovation Centre, Moorepark, P61C996 Fermoy, Co. Cork, Ireland
| | - E A M Bokkers
- Animal Production Systems group, Department of Animal Sciences, Wageningen University & Research, 6700 AH, Wageningen, the Netherlands
| | - I J M de Boer
- Animal Production Systems group, Department of Animal Sciences, Wageningen University & Research, 6700 AH, Wageningen, the Netherlands
| | - H Hogeveen
- Business Economics group, Department of Social Sciences, Wageningen University & Research, 6700 AH, Wageningen, the Netherlands
| | - R Sayers
- Teagasc, Animal and Grassland Research and Innovation Centre, Moorepark, P61C996 Fermoy, Co. Cork, Ireland
| | - N Byrne
- Teagasc, Animal and Grassland Research and Innovation Centre, Moorepark, P61C996 Fermoy, Co. Cork, Ireland
| | - E Ruelle
- Teagasc, Animal and Grassland Research and Innovation Centre, Moorepark, P61C996 Fermoy, Co. Cork, Ireland.
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Clough JR, Byrne N, Oksuz I, Zimmer VA, Schnabel JA, King AP. A Topological Loss Function for Deep-Learning Based Image Segmentation Using Persistent Homology. IEEE Trans Pattern Anal Mach Intell 2022; 44:8766-8778. [PMID: 32886606 PMCID: PMC9721526 DOI: 10.1109/tpami.2020.3013679] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
We introduce a method for training neural networks to perform image or volume segmentation in which prior knowledge about the topology of the segmented object can be explicitly provided and then incorporated into the training process. By using the differentiable properties of persistent homology, a concept used in topological data analysis, we can specify the desired topology of segmented objects in terms of their Betti numbers and then drive the proposed segmentations to contain the specified topological features. Importantly this process does not require any ground-truth labels, just prior knowledge of the topology of the structure being segmented. We demonstrate our approach in four experiments: one on MNIST image denoising and digit recognition, one on left ventricular myocardium segmentation from magnetic resonance imaging data from the UK Biobank, one on the ACDC public challenge dataset and one on placenta segmentation from 3-D ultrasound. We find that embedding explicit prior knowledge in neural network segmentation tasks is most beneficial when the segmentation task is especially challenging and that it can be used in either a semi-supervised or post-processing context to extract a useful training gradient from images without pixelwise labels.
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Loeb S, Salter C, Nelson CJ, Mulhall JP, Byrne N, Sanchez Nolasco T, Ness M, Gupta N, Cassidy C, Crisostomo-Wynne T, Li R, Wittmann D. Comparison of Sexual Concerns Between Patients with Prostate Cancer and Their Partners. J Sex Med 2022. [DOI: 10.1016/j.jsxm.2022.01.111] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Polus M, Hanhauser Y, McGarrigle S, Spillane C, Byrne N, Prizeman G, Drury A, Connolly E, Brady AM. CN19 BRCA mutation carriers’ and stakeholders’ perspectives on cancer risk management and decision-making: A qualitative study. Ann Oncol 2021. [DOI: 10.1016/j.annonc.2021.08.644] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
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Reinmuth N, Garassino M, Trukhin D, Hochmair M, Özgüroğlu M, Havel L, Goldman J, Chen Y, Losonczy G, Spinnato F, Conev N, Bar J, Broadhurst H, Byrne N, Jiang H, Paz-Ares L. P48.03 First-Line Durvalumab plus Platinum-Etoposide in ES-SCLC: Exploratory Analyses Based on Extent of Disease in CASPIAN. J Thorac Oncol 2021. [DOI: 10.1016/j.jtho.2021.01.873] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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O'Connor A, Bokkers E, de Boer I, Hogeveen H, Sayers R, Byrne N, Ruelle E, Shalloo L. Associating mobility scores with production and reproductive performance in pasture-based dairy cows. J Dairy Sci 2020; 103:9238-9249. [DOI: 10.3168/jds.2019-17103] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2019] [Accepted: 04/28/2020] [Indexed: 11/19/2022]
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7
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O'Connor AH, Bokkers EAM, de Boer IJM, Hogeveen H, Sayers R, Byrne N, Ruelle E, Engel B, Shalloo L. Cow and herd-level risk factors associated with mobility scores in pasture-based dairy cows. Prev Vet Med 2020; 181:105077. [PMID: 32653490 DOI: 10.1016/j.prevetmed.2020.105077] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2019] [Revised: 06/23/2020] [Accepted: 06/23/2020] [Indexed: 10/24/2022]
Abstract
Lameness in dairy cows is an area of concern from an economic, environmental and animal welfare point of view. While the potential risk factors associated with suboptimal mobility in non-pasture-based systems are evident throughout the literature, the same information is less abundant for pasture-based systems specifically those coupled with seasonal calving, like those in Ireland. Therefore, the objective of this study was to determine the potential risk factors associated with specific mobility scores (0 = good, 1 = imperfect, 2 = impaired, and 3 = severely impaired mobility) for pasture-based dairy cows. Various cow and herd-level potential risk factors from Irish pasture-based systems were collected and analyzed for their association with suboptimal mobility, whereby a mobility score of 0 refers to cows with optimal mobility and a mobility score ≥ 1 refers to a cow with some form of suboptimal mobility. Combined cow and herd-level statistical models were used to determine the increased or decreased risk for mobility score 1, 2, and 3 (any form of suboptimal mobility) compared to the risk for mobility score 0 (optimal mobility), as the outcome variable and the various potential risk factors at both the cow and herd-level were included as predictor type variables. Cow-level variables included body condition score, milk yield, genetic predicted transmitting ability for 'lameness', somatic cell score, calving month and cow breed. Herd-level variables included various environmental and management practices on farm. These analyses have identified several cow-level potential risk factors (including low body condition score, high milk yield, elevated somatic cell count, stage of lactation, calving month, and certain breed types), as well as various herd-level potential risk factors (including the amount of time taken to complete the milking process, claw trimmer training, farm layout factors and foot bathing practices) which are associated with suboptimal mobility. The results of this study should be considered by farm advisors when advising and implementing a cow/herd health program for dairy cows in pasture-based systems.
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Affiliation(s)
- A H O'Connor
- Teagasc, Animal and Grassland Research and Innovation Centre, Moorepark, Fermoy, Co. Cork, Ireland; Animal Production Systems Group, Department of Animal Sciences, Wageningen University & Research, the Netherlands.
| | - E A M Bokkers
- Animal Production Systems Group, Department of Animal Sciences, Wageningen University & Research, the Netherlands
| | - I J M de Boer
- Animal Production Systems Group, Department of Animal Sciences, Wageningen University & Research, the Netherlands
| | - H Hogeveen
- Business Economics Group, Department of Social Sciences, Wageningen University & Research, the Netherlands
| | - R Sayers
- Teagasc, Animal and Grassland Research and Innovation Centre, Moorepark, Fermoy, Co. Cork, Ireland
| | - N Byrne
- Teagasc, Animal and Grassland Research and Innovation Centre, Moorepark, Fermoy, Co. Cork, Ireland
| | - E Ruelle
- Teagasc, Animal and Grassland Research and Innovation Centre, Moorepark, Fermoy, Co. Cork, Ireland
| | - B Engel
- Mathematical and Statistical Methods - Biometris, Department of Plant Sciences, Wageningen University & Research, the Netherlands
| | - L Shalloo
- Teagasc, Animal and Grassland Research and Innovation Centre, Moorepark, Fermoy, Co. Cork, Ireland
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Loeb S, Reines K, Abu-Salha Y, French W, Steinberg G, Walter D, Byrne N, Smith A. Quality of bladder cancer information on YouTube. EUR UROL SUPPL 2020. [DOI: 10.1016/s2666-1683(20)33950-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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Molloy OE, Kearney N, Byrne N, Kirby B. Successful treatment of recalcitrant nodular prurigo with tofacitinib. Clin Exp Dermatol 2020; 45:918-920. [PMID: 32484964 DOI: 10.1111/ced.14320] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2019] [Accepted: 05/27/2020] [Indexed: 11/28/2022]
Affiliation(s)
- O E Molloy
- Department of Dermatology, St Vincent's University Hospital, Dublin, Ireland
| | - N Kearney
- Department of Dermatology, St Vincent's University Hospital, Dublin, Ireland
| | - N Byrne
- Department of Dermatology, St Vincent's University Hospital, Dublin, Ireland
| | - B Kirby
- Department of Dermatology, St Vincent's University Hospital, Dublin, Ireland
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Kearney N, Byrne N, Kirby B, Hughes R. Successful use of guselkumab in the treatment of severe hidradenitis suppurativa. Clin Exp Dermatol 2020; 45:618-619. [DOI: 10.1111/ced.14199] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/17/2020] [Indexed: 01/01/2023]
Affiliation(s)
- N. Kearney
- Department of Dermatology St Vincent's University Hospital Dublin Ireland
| | - N. Byrne
- Department of Dermatology St Vincent's University Hospital Dublin Ireland
| | - B. Kirby
- Department of Dermatology St Vincent's University Hospital Dublin Ireland
- Charles Institute of Dermatology University College Dublin Dublin Ireland
| | - R. Hughes
- Department of Dermatology St Vincent's University Hospital Dublin Ireland
- Charles Institute of Dermatology University College Dublin Dublin Ireland
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Mac Mahon J, Kirthi S, Byrne N, O'Grady C, Tobin AM. An Update on Health-Related Quality of Life and Patient-Reported Outcomes in Hidradenitis Suppurativa. Patient Relat Outcome Meas 2020; 11:21-26. [PMID: 32104123 PMCID: PMC7021915 DOI: 10.2147/prom.s174299] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 07/09/2019] [Accepted: 11/13/2019] [Indexed: 01/27/2023]
Abstract
Hidradenitis suppurativa is a common inflammatory skin condition which causes recurrent abscesses, sinuses and scarring in the axillae, groin and inframammary areas. As well as causing significant physical distress due to pain and discharge, the condition impacts psychological well-being with markedly impaired quality of life. Patients suffer pain, embarrassment and psychological distress with impairment of their work and intimate relationships marking it as one of the most distressing dermatological conditions. Numerous studies have documented markers of psychological distress encompassing the physical effects such as pain and itch, affects on mood and impaired function.
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Affiliation(s)
- J Mac Mahon
- Department of Dermatology, Tallaght University Hospital, Tallaght, Dublin 24, Trinity College Dublin, Dublin, Ireland
| | - S Kirthi
- Department of Dermatology, Tallaght University Hospital, Tallaght, Dublin 24, Trinity College Dublin, Dublin, Ireland
| | - N Byrne
- Department of Dermatology, Tallaght University Hospital, Tallaght, Dublin 24, Trinity College Dublin, Dublin, Ireland
| | - C O'Grady
- Department of Dermatology, Tallaght University Hospital, Tallaght, Dublin 24, Trinity College Dublin, Dublin, Ireland
| | - A M Tobin
- Department of Dermatology, Tallaght University Hospital, Tallaght, Dublin 24, Trinity College Dublin, Dublin, Ireland
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12
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Byrne N, Hughes R, Murphy L, Kirby B. Remission of severe hidradenitis suppurativa following chemotherapy for Hodgkin lymphoma. Br J Dermatol 2020; 182:483-484. [DOI: 10.1111/bjd.18423] [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: 11/27/2022]
Affiliation(s)
- N. Byrne
- Department of Dermatology St Vincent's University Hospital Dublin Ireland
| | - R. Hughes
- Department of Dermatology St Vincent's University Hospital Dublin Ireland
| | - L.A. Murphy
- Department of Dermatology Cork University Hospital Cork Ireland
| | - B. Kirby
- Department of Dermatology St Vincent's University Hospital Dublin Ireland
- Charles Institute University College Dublin Dublin Ireland
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13
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Nishio M, Ji J, Hotta K, Chiu CH, Lee JS, Azuma K, Kim SW, Wu SY, Dvorkin M, Trukhin D, Havel L, Hochmair M, Özgüroğlu M, Bar J, Chen Y, Goldman J, Byrne N, Laud P, Shire N, Paz-Ares L. Overall survival with first-line durvalumab plus platinum-etoposide in patients with extensive-stage (ES)-SCLC in CASPIAN: Subgroup findings from Asia. Ann Oncol 2019. [DOI: 10.1093/annonc/mdz446.014] [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: 11/13/2022] Open
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Whitaker J, Neji R, Byrne N, Puyol-Antón E, Mukherjee RK, Williams SE, Chubb H, O’Neill L, Razeghi O, Connolly A, Rhode K, Niederer S, King A, Tschabrunn C, Anter E, Nezafat R, Bishop MJ, O’Neill M, Razavi R, Roujol S. Improved co-registration of ex-vivo and in-vivo cardiovascular magnetic resonance images using heart-specific flexible 3D printed acrylic scaffold combined with non-rigid registration. J Cardiovasc Magn Reson 2019; 21:62. [PMID: 31597563 PMCID: PMC6785908 DOI: 10.1186/s12968-019-0574-z] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2018] [Accepted: 09/02/2019] [Indexed: 01/01/2023] Open
Abstract
BACKGROUND Ex-vivo cardiovascular magnetic resonance (CMR) imaging has played an important role in the validation of in-vivo CMR characterization of pathological processes. However, comparison between in-vivo and ex-vivo imaging remains challenging due to shape changes occurring between the two states, which may be non-uniform across the diseased heart. A novel two-step process to facilitate registration between ex-vivo and in-vivo CMR was developed and evaluated in a porcine model of chronic myocardial infarction (MI). METHODS Seven weeks after ischemia-reperfusion MI, 12 swine underwent in-vivo CMR imaging with late gadolinium enhancement followed by ex-vivo CMR 1 week later. Five animals comprised the control group, in which ex-vivo imaging was undertaken without any support in the LV cavity, 7 animals comprised the experimental group, in which a two-step registration optimization process was undertaken. The first step involved a heart specific flexible 3D printed scaffold generated from in-vivo CMR, which was used to maintain left ventricular (LV) shape during ex-vivo imaging. In the second step, a non-rigid co-registration algorithm was applied to align in-vivo and ex-vivo data. Tissue dimension changes between in-vivo and ex-vivo imaging were compared between the experimental and control group. In the experimental group, tissue compartment volumes and thickness were compared between in-vivo and ex-vivo data before and after non-rigid registration. The effectiveness of the alignment was assessed quantitatively using the DICE similarity coefficient. RESULTS LV cavity volume changed more in the control group (ratio of cavity volume between ex-vivo and in-vivo imaging in control and experimental group 0.14 vs 0.56, p < 0.0001) and there was a significantly greater change in the short axis dimensions in the control group (ratio of short axis dimensions in control and experimental group 0.38 vs 0.79, p < 0.001). In the experimental group, prior to non-rigid co-registration the LV cavity contracted isotropically in the ex-vivo condition by less than 20% in each dimension. There was a significant proportional change in tissue thickness in the healthy myocardium (change = 29 ± 21%), but not in dense scar (change = - 2 ± 2%, p = 0.034). Following the non-rigid co-registration step of the process, the DICE similarity coefficients for the myocardium, LV cavity and scar were 0.93 (±0.02), 0.89 (±0.01) and 0.77 (±0.07) respectively and the myocardial tissue and LV cavity volumes had a ratio of 1.03 and 1.00 respectively. CONCLUSIONS The pattern of the morphological changes seen between the in-vivo and the ex-vivo LV differs between scar and healthy myocardium. A 3D printed flexible scaffold based on the in-vivo shape of the LV cavity is an effective strategy to minimize morphological changes in the ex-vivo LV. The subsequent non-rigid registration step further improved the co-registration and local comparison between in-vivo and ex-vivo data.
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Affiliation(s)
- John Whitaker
- School of Biomedical Engineering and Imaging Sciences, King’s College, London, Fourth Floor Lambeth Wing, St Thomas’ Hospital, London, SE1 7EH UK
| | - Radhouene Neji
- School of Biomedical Engineering and Imaging Sciences, King’s College, London, Fourth Floor Lambeth Wing, St Thomas’ Hospital, London, SE1 7EH UK
- Siemens Healthcare Limited, Frimley, UK
| | - Nicholas Byrne
- School of Biomedical Engineering and Imaging Sciences, King’s College, London, Fourth Floor Lambeth Wing, St Thomas’ Hospital, London, SE1 7EH UK
- Medical Physics, Guy’s and St. Thomas’ NHS Foundation Trust, London, UK
| | - Esther Puyol-Antón
- School of Biomedical Engineering and Imaging Sciences, King’s College, London, Fourth Floor Lambeth Wing, St Thomas’ Hospital, London, SE1 7EH UK
| | - Rahul K. Mukherjee
- School of Biomedical Engineering and Imaging Sciences, King’s College, London, Fourth Floor Lambeth Wing, St Thomas’ Hospital, London, SE1 7EH UK
| | - Steven E. Williams
- School of Biomedical Engineering and Imaging Sciences, King’s College, London, Fourth Floor Lambeth Wing, St Thomas’ Hospital, London, SE1 7EH UK
| | - Henry Chubb
- School of Biomedical Engineering and Imaging Sciences, King’s College, London, Fourth Floor Lambeth Wing, St Thomas’ Hospital, London, SE1 7EH UK
| | - Louisa O’Neill
- School of Biomedical Engineering and Imaging Sciences, King’s College, London, Fourth Floor Lambeth Wing, St Thomas’ Hospital, London, SE1 7EH UK
| | - Orod Razeghi
- School of Biomedical Engineering and Imaging Sciences, King’s College, London, Fourth Floor Lambeth Wing, St Thomas’ Hospital, London, SE1 7EH UK
| | - Adam Connolly
- School of Biomedical Engineering and Imaging Sciences, King’s College, London, Fourth Floor Lambeth Wing, St Thomas’ Hospital, London, SE1 7EH UK
| | - Kawal Rhode
- School of Biomedical Engineering and Imaging Sciences, King’s College, London, Fourth Floor Lambeth Wing, St Thomas’ Hospital, London, SE1 7EH UK
| | - Steven Niederer
- School of Biomedical Engineering and Imaging Sciences, King’s College, London, Fourth Floor Lambeth Wing, St Thomas’ Hospital, London, SE1 7EH UK
| | - Andrew King
- School of Biomedical Engineering and Imaging Sciences, King’s College, London, Fourth Floor Lambeth Wing, St Thomas’ Hospital, London, SE1 7EH UK
| | - Cory Tschabrunn
- Cardiology Department, University of Pennsylvania, Philadelphia, PA USA
| | - Elad Anter
- Cardiology Department, Beth Israel Deaconess Medical Centre / Harvard Medical School, Boston, MA USA
| | - Reza Nezafat
- Cardiology Department, Beth Israel Deaconess Medical Centre / Harvard Medical School, Boston, MA USA
| | - Martin J. Bishop
- School of Biomedical Engineering and Imaging Sciences, King’s College, London, Fourth Floor Lambeth Wing, St Thomas’ Hospital, London, SE1 7EH UK
| | - Mark O’Neill
- School of Biomedical Engineering and Imaging Sciences, King’s College, London, Fourth Floor Lambeth Wing, St Thomas’ Hospital, London, SE1 7EH UK
| | - Reza Razavi
- School of Biomedical Engineering and Imaging Sciences, King’s College, London, Fourth Floor Lambeth Wing, St Thomas’ Hospital, London, SE1 7EH UK
| | - Sébastien Roujol
- School of Biomedical Engineering and Imaging Sciences, King’s College, London, Fourth Floor Lambeth Wing, St Thomas’ Hospital, London, SE1 7EH UK
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Paz-Ares L, Chen Y, Reinmuth N, Hotta K, Trukhin D, Statsenko G, Hochmair M, Özgüroğlu M, Ji J, Voitko O, Poltoratskiy A, Ponce S, Verderame F, Havel L, Bondarenko I, Kazarnowicz A, Losonczy G, Conev N, Armstrong J, Byrne N, Shire N, Jiang H, Goldman J. PL02.11 Overall Survival with Durvalumab Plus Etoposide-Platinum in First-Line Extensive-Stage SCLC: Results from the CASPIAN Study. J Thorac Oncol 2019. [DOI: 10.1016/j.jtho.2019.08.061] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Affiliation(s)
- N. Kearney
- Department of Dermatology St. Vincent's University Hospital Elm Park Dublin 4 Ireland
| | - N. Byrne
- Department of Dermatology St. Vincent's University Hospital Elm Park Dublin 4 Ireland
| | - B. Kirby
- Department of Dermatology St. Vincent's University Hospital Elm Park Dublin 4 Ireland
| | - R. Hughes
- Department of Dermatology St. Vincent's University Hospital Elm Park Dublin 4 Ireland
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17
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O'Connor AH, Bokkers EAM, de Boer IJM, Hogeveen H, Sayers R, Byrne N, Ruelle E, Shalloo L. Associating cow characteristics with mobility scores in pasture-based dairy cows. J Dairy Sci 2019; 102:8332-8342. [PMID: 31301835 DOI: 10.3168/jds.2018-15719] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [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: 09/19/2018] [Accepted: 04/23/2019] [Indexed: 11/19/2022]
Abstract
The quality of dairy cow mobility can have significant welfare, economic, and environmental consequences that have yet to be extensively quantified for pasture-based systems. The objective of this study was to characterize mobility quality by examining associations between specific mobility scores, claw disorders (both the type and severity), body condition score (BCS), and cow parity. Data were collected for 6,927 cows from 52 pasture-based dairy herds, including mobility score (0 = optimal mobility; 1, 2, or 3 = increasing severities of suboptimal mobility), claw disorder type and severity, BCS, and cow parity. Multinomial logistic regression was used for analysis. The outcome variable was mobility score, and the predictor variables were BCS, type and severity of claw disorders, and cow parity. Three models were run, each with 1 reference category (mobility score 0, 1, or 2). Each model also included claw disorders (overgrown claw, sole hemorrhage, white line disease, sole ulcer, and digital dermatitis), BCS, and cow parity as predictor variables. The presence of most types of claw disorders had odds ratios >1, indicating an increased likelihood of a cow having suboptimal mobility. Low BCS (BCS <3.00) was associated with an increased risk of a cow having suboptimal mobility, and relatively higher parity was also associated with an increased risk of suboptimal mobility. These results confirm an association between claw disorders, BCS, cow parity, and dairy cow mobility score. Therefore, mobility score should be routinely practiced to identify cows with slight deviations from the optimal mobility pattern and to take preventive measures to keep the problem from worsening.
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Affiliation(s)
- A H O'Connor
- Teagasc, Animal and Grassland Research and Innovation Centre, Moorepark, Fermoy, Co. Cork, Ireland P61 C996; Animal Production Systems Group, Department of Animal Sciences, Wageningen University and Research, 6700 AH, Wageningen, the Netherlands.
| | - E A M Bokkers
- Animal Production Systems Group, Department of Animal Sciences, Wageningen University and Research, 6700 AH, Wageningen, the Netherlands
| | - I J M de Boer
- Animal Production Systems Group, Department of Animal Sciences, Wageningen University and Research, 6700 AH, Wageningen, the Netherlands
| | - H Hogeveen
- Business Economics Group, Department of Social Sciences, Wageningen University and Research, 6700 EW, Wageningen, the Netherlands
| | - R Sayers
- Teagasc, Animal and Grassland Research and Innovation Centre, Moorepark, Fermoy, Co. Cork, Ireland P61 C996
| | - N Byrne
- Teagasc, Animal and Grassland Research and Innovation Centre, Moorepark, Fermoy, Co. Cork, Ireland P61 C996
| | - E Ruelle
- Teagasc, Animal and Grassland Research and Innovation Centre, Moorepark, Fermoy, Co. Cork, Ireland P61 C996
| | - L Shalloo
- Teagasc, Animal and Grassland Research and Innovation Centre, Moorepark, Fermoy, Co. Cork, Ireland P61 C996
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Burkhardt BEU, Brown NK, Carberry JE, Velasco Forte MN, Byrne N, Greil G, Hussain T, Tandon A. Creating three dimensional models of the right ventricular outflow tract: influence of contrast, sequence, operator, and threshold. Int J Cardiovasc Imaging 2019; 35:2067-2076. [PMID: 31203535 DOI: 10.1007/s10554-019-01646-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/08/2019] [Accepted: 06/07/2019] [Indexed: 11/29/2022]
Abstract
The use of 3D printed models of the right ventricular outflow tract (RVOT) for surgical and interventional planning is growing and often requires image segmentation of cardiac magnetic resonance (CMR) images. Segmentation results may vary based on contrast, image sequence, signal threshold chosen by the operator, and manual post-processing. The purpose of this study was to determine potential biases and post-processing errors in image segmentation to enable informed decisions. Models of the RVOT and pulmonary arteries from twelve patients who had contrast enhanced CMR angiography with gadopentetate dimeglumine (GPD), gadofosveset trisodium (GFT), and a post-GFT inversion-recovery (IR) whole heart sequence were segmented, trimmed, and aligned by three operators. Geometric agreement and minimal RVOT diameters were compared between sequences and operators. To determine the contribution of threshold, interoperator variability was compared between models created by the same two operators using the same versus different thresholds. Geometric agreement by Dice between objects was high (intraoperator: 0.89-0.95; interoperator: 0.95-0.97), without differences between sequences. Minimal RVOT diameters differed on average by - 1.9 to - 1.3 mm (intraoperator) and by 0.4 to 1.4 mm (interoperator). The contribution of threshold to interoperator geometric agreement was not significant (same threshold: 0.96 ± 0.06, different threshold: 0.93 ± 0.05; p = 0.181), but minimal RVOT diameters were more variable with different versus constant thresholds (- 9.12% vs. 2.42%; p < 0.05). Thresholding does not significantly change interoperator variability for geometric agreement, but does for minimal RVOT diameter. Minimal RVOT diameters showed clinically relevant variation within and between operators.
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Affiliation(s)
- Barbara E U Burkhardt
- Department of Pediatrics, University of Texas Southwestern Medical Center, Dallas, TX, USA. .,Pediatric Cardiology, Department of Surgery, Pediatric Heart Center, University Children's Hospital Zurich, Steinwiesstr. 75, 8032, Zurich, Switzerland.
| | - Nicholas K Brown
- Department of Pediatrics, University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Jaclyn E Carberry
- Division of Imaging Sciences and Biomedical Engineering, King's College London, London, UK
| | | | - Nicholas Byrne
- Division of Imaging Sciences and Biomedical Engineering, King's College London, London, UK
| | - Gerald Greil
- Department of Pediatrics, University of Texas Southwestern Medical Center, Dallas, TX, USA.,Division of Imaging Sciences and Biomedical Engineering, King's College London, London, UK.,Department of Biomedical Engineering, University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Tarique Hussain
- Department of Pediatrics, University of Texas Southwestern Medical Center, Dallas, TX, USA.,Division of Imaging Sciences and Biomedical Engineering, King's College London, London, UK.,Department of Biomedical Engineering, University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Animesh Tandon
- Department of Pediatrics, University of Texas Southwestern Medical Center, Dallas, TX, USA.,Department of Biomedical Engineering, University of Texas Southwestern Medical Center, Dallas, TX, USA
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19
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Clough JR, Oksuz I, Byrne N, Schnabel JA, King AP. Explicit Topological Priors for Deep-Learning Based Image Segmentation Using Persistent Homology. Lecture Notes in Computer Science 2019. [DOI: 10.1007/978-3-030-20351-1_2] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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20
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Ring S, Twomey A, Byrne N, Kelleher M, Pabiou T, Doherty M, Berry D. Genetic selection for hoof health traits and cow mobility scores can accelerate the rate of genetic gain in producer-scored lameness in dairy cows. J Dairy Sci 2018; 101:10034-10047. [DOI: 10.3168/jds.2018-15009] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2018] [Accepted: 07/24/2018] [Indexed: 02/02/2023]
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21
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Valverde I, Gomez-Ciriza G, Hussain T, Suarez-Mejias C, Velasco-Forte MN, Byrne N, Ordoñez A, Gonzalez-Calle A, Anderson D, Hazekamp MG, Roest AAW, Rivas-Gonzalez J, Uribe S, El-Rassi I, Simpson J, Miller O, Ruiz E, Zabala I, Mendez A, Manso B, Gallego P, Prada F, Cantinotti M, Ait-Ali L, Merino C, Parry A, Poirier N, Greil G, Razavi R, Gomez-Cia T, Hosseinpour AR. Three-dimensional printed models for surgical planning of complex congenital heart defects: an international multicentre study. Eur J Cardiothorac Surg 2018; 52:1139-1148. [PMID: 28977423 DOI: 10.1093/ejcts/ezx208] [Citation(s) in RCA: 152] [Impact Index Per Article: 25.3] [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: 03/21/2017] [Accepted: 05/21/2017] [Indexed: 01/10/2023] Open
Abstract
OBJECTIVES To evaluate the impact of 3D printed models (3D models) on surgical planning in complex congenital heart disease (CHD). METHODS A prospective case-crossover study involving 10 international centres and 40 patients with complex CHD (median age 3 years, range 1 month-34 years) was conducted. Magnetic resonance imaging and computed tomography were used to acquire and segment the 3D cardiovascular anatomy. Models were fabricated by fused deposition modelling of polyurethane filament, and dimensions were compared with medical images. Decisions after the evaluation of routine clinical images were compared with those after inspection of the 3D model and intraoperative findings. Subjective satisfaction questionnaire was provided. RESULTS 3D models accurately replicate anatomy with a mean bias of -0.27 ± 0.73 mm. Ninety-six percent of the surgeons agree or strongly agree that 3D models provided better understanding of CHD morphology and improved surgical planning. 3D models changed the surgical decision in 19 of the 40 cases. Consideration of a 3D model refined the planned biventricular repair, achieving an improved surgical correction in 8 cases. In 4 cases initially considered for conservative management or univentricular palliation, inspection of the 3D model enabled successful biventricular repair. CONCLUSIONS 3D models are accurate replicas of the cardiovascular anatomy and improve the understanding of complex CHD. 3D models did not change the surgical decision in most of the cases (21 of 40 cases, 52.5% cases). However, in 19 of the 40 selected complex cases, 3D model helped redefining the surgical approach.
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Affiliation(s)
- Israel Valverde
- Paediatric Cardiology, Cardiothoracic Surgery and Technological Innovation Group, Hospital Virgen del Rocio, Seville, Spain.,Cardiovascular Pathology Unit, Institute of Biomedicine of Seville (IBIS), CIBER-CV, Hospital Virgen de Rocio/CSIC/University of Seville, Seville, Spain.,Division of Imaging Sciences and Biomedical Engineering, King's College London, The Rayne Institute, St. Thomas' Hospital, London, UK.,Department of Congenital Heart Disease, Evelina London Children's Hospital, Guy's and St. Thomas' NHS Foundation Trust, London, UK
| | - Gorka Gomez-Ciriza
- Paediatric Cardiology, Cardiothoracic Surgery and Technological Innovation Group, Hospital Virgen del Rocio, Seville, Spain
| | - Tarique Hussain
- Division of Imaging Sciences and Biomedical Engineering, King's College London, The Rayne Institute, St. Thomas' Hospital, London, UK.,Children's Health CMC Dallas and UT Southwestern, Dallas, TX, USA
| | - Cristina Suarez-Mejias
- Paediatric Cardiology, Cardiothoracic Surgery and Technological Innovation Group, Hospital Virgen del Rocio, Seville, Spain
| | - Maria N Velasco-Forte
- Division of Imaging Sciences and Biomedical Engineering, King's College London, The Rayne Institute, St. Thomas' Hospital, London, UK.,Department of Congenital Heart Disease, Evelina London Children's Hospital, Guy's and St. Thomas' NHS Foundation Trust, London, UK
| | - Nicholas Byrne
- Division of Imaging Sciences and Biomedical Engineering, King's College London, The Rayne Institute, St. Thomas' Hospital, London, UK
| | - Antonio Ordoñez
- Cardiovascular Pathology Unit, Institute of Biomedicine of Seville (IBIS), CIBER-CV, Hospital Virgen de Rocio/CSIC/University of Seville, Seville, Spain
| | - Antonio Gonzalez-Calle
- Paediatric Cardiology, Cardiothoracic Surgery and Technological Innovation Group, Hospital Virgen del Rocio, Seville, Spain
| | - David Anderson
- Division of Imaging Sciences and Biomedical Engineering, King's College London, The Rayne Institute, St. Thomas' Hospital, London, UK.,Department of Congenital Heart Disease, Evelina London Children's Hospital, Guy's and St. Thomas' NHS Foundation Trust, London, UK
| | - Mark G Hazekamp
- Department of Paediatric Cardiology and Cardiothoracic Surgery, Leiden University Medical Center, Leiden, Netherlands
| | - Arno A W Roest
- Department of Paediatric Cardiology and Cardiothoracic Surgery, Leiden University Medical Center, Leiden, Netherlands
| | - Jose Rivas-Gonzalez
- Paediatric Cardiology, Cardiothoracic Surgery and Technological Innovation Group, Hospital Virgen del Rocio, Seville, Spain
| | - Sergio Uribe
- Radiology Department and Biomedical Imaging Center, School of Medicine, Pontificia Universidad Catolica de Chile, Santiago, Chile
| | - Issam El-Rassi
- Children's Heart Center, American University of Beirut AUBMC, Beirut, Lebanon
| | - John Simpson
- Division of Imaging Sciences and Biomedical Engineering, King's College London, The Rayne Institute, St. Thomas' Hospital, London, UK.,Department of Congenital Heart Disease, Evelina London Children's Hospital, Guy's and St. Thomas' NHS Foundation Trust, London, UK
| | - Owen Miller
- Division of Imaging Sciences and Biomedical Engineering, King's College London, The Rayne Institute, St. Thomas' Hospital, London, UK.,Department of Congenital Heart Disease, Evelina London Children's Hospital, Guy's and St. Thomas' NHS Foundation Trust, London, UK
| | - Enrique Ruiz
- Paediatric Cardiology Unit, Hospital Regional Universitario Malaga, Malaga, Spain
| | - Ignacio Zabala
- Paediatric Cardiology Unit, Hospital Regional Universitario Malaga, Malaga, Spain
| | - Ana Mendez
- Division of Paediatric Cardiology, Department of Paediatrics, Sainte-Justine University Hospital Center, Montreal, QC, Canada
| | - Begoña Manso
- Paediatric Cardiology, Cardiothoracic Surgery and Technological Innovation Group, Hospital Virgen del Rocio, Seville, Spain
| | - Pastora Gallego
- Paediatric Cardiology, Cardiothoracic Surgery and Technological Innovation Group, Hospital Virgen del Rocio, Seville, Spain
| | - Freddy Prada
- Paediatric Cardiology Unit, Hospital Sant Joan de Deu, Barcelona, Spain
| | - Massimiliano Cantinotti
- Fondazione G. Monasterio and Institute of Clinical Physiology, CNR-Regione Toscana, Pisa, Italy
| | - Lamia Ait-Ali
- Fondazione G. Monasterio and Institute of Clinical Physiology, CNR-Regione Toscana, Pisa, Italy
| | - Carlos Merino
- Paediatric Cardiology Unit, Hospital Reina Sofía, Córdoba, Spain
| | - Andrew Parry
- Congenital Cardiac Surgery Unit, Bristol Children Hospital, Bristol, UK
| | - Nancy Poirier
- Division of Paediatric Cardiology, Department of Paediatrics, Sainte-Justine University Hospital Center, Montreal, QC, Canada
| | - Gerald Greil
- Division of Imaging Sciences and Biomedical Engineering, King's College London, The Rayne Institute, St. Thomas' Hospital, London, UK.,Children's Health CMC Dallas and UT Southwestern, Dallas, TX, USA
| | - Reza Razavi
- Division of Imaging Sciences and Biomedical Engineering, King's College London, The Rayne Institute, St. Thomas' Hospital, London, UK.,Department of Congenital Heart Disease, Evelina London Children's Hospital, Guy's and St. Thomas' NHS Foundation Trust, London, UK
| | - Tomas Gomez-Cia
- Paediatric Cardiology, Cardiothoracic Surgery and Technological Innovation Group, Hospital Virgen del Rocio, Seville, Spain
| | - Amir-Reza Hosseinpour
- Paediatric Cardiology, Cardiothoracic Surgery and Technological Innovation Group, Hospital Virgen del Rocio, Seville, Spain
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Burkhardt BE, Byrne N, Velasco Forte MN, Iannaccone F, De Beule M, Morgan GJ, Hussain T. Evaluation of a modified Cheatham-Platinum stent for the treatment of aortic coarctation by finite element modelling. JRSM Cardiovasc Dis 2018; 7:2048004018773958. [PMID: 29760913 PMCID: PMC5944143 DOI: 10.1177/2048004018773958] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2017] [Revised: 02/05/2018] [Accepted: 03/21/2018] [Indexed: 11/21/2022] Open
Abstract
Objectives Stent implantation for the treatment of aortic coarctation has become a standard approach for the management of older children and adults. Criteria for optimal stent design and construction remain undefined. This study used computational modelling to compare the performance of two generations of the Cheatham-Platinum stent (NuMED, Hopkinton, NY, USA) deployed in aortic coarctation using finite element analysis. Design Three-dimensional models of both stents, reverse engineered from microCT scans, were implanted in the aortic model of one representative patient. They were virtually expanded in the vessel with a 16 mm balloon and a pressure of 2 atm. Results The conventional stent foreshortened to 96.5% of its initial length, whereas the new stent to 99.2% of its initial length. Diameters in 15 slices across the conventional stent were 11.6–15 mm (median 14.2 mm) and slightly higher across the new stent: 10.7–15.3 mm (median 14.5 mm) (p= 0.021). Apposition to the vessel wall was similar: conventional stent 31.1% and new stent 28.6% of total stent area. Conclusions The new design Cheatham-Platinum stent showed similar deployment results compared to the conventional design. The new stent design showed slightly higher expansion, using the same delivery balloon. Patient-specific computational models can be used for virtual implantation of new aortic stents and promise to inform subsequent in vivo trials.
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Affiliation(s)
- Barbara Eu Burkhardt
- Department of Pediatrics, University of Texas Southwestern Medical Centre, Dallas, TX, USA
| | - Nicholas Byrne
- Division of Imaging Sciences and Biomedical Engineering, King's College, London, UK
| | | | | | | | - Gareth J Morgan
- The Heart Institute, Children's Hospital of Colorado, Anschutz Medical Campus, Denver, CO, USA
| | - Tarique Hussain
- Department of Pediatrics, University of Texas Southwestern Medical Centre, Dallas, TX, USA
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23
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Ring SC, Graham DA, Sayers RG, Byrne N, Kelleher MM, Doherty ML, Berry DP. Genetic variability in the humoral immune response to bovine herpesvirus-1 infection in dairy cattle and genetic correlations with performance traits. J Dairy Sci 2018; 101:6190-6204. [PMID: 29705421 DOI: 10.3168/jds.2018-14481] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [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: 01/23/2018] [Accepted: 03/13/2018] [Indexed: 01/24/2023]
Abstract
Bovine herpesvirus-1 (BoHV-1) is a viral pathogen of global significance that is known to instigate several diseases in cattle, the most notable of which include infectious bovine rhinotracheitis and bovine respiratory disease. The genetic variability in the humoral immune response to BoHV-1 has, to our knowledge, not ever been quantified. Therefore, the objectives of the present study were to estimate the genetic parameters for the humoral immune response to BoHV-1 in Irish female dairy cattle, as well as to investigate the genetic relationship between the humoral immune response to BoHV-1 with milk production performance, fertility performance, and animal mortality. Information on antibody response to BoHV-1 was available to the present study from 2 BoHV-1 sero-prevalence research studies conducted between the years 2010 to 2015, inclusive; after edits, BoHV-1 antibody test results were available on a total of 7,501 female cattle from 58 dairy herds. National records of milk production (i.e., 305-d milk yield, fat yield, protein yield, and somatic cell score; n = 1,211,905 milk-recorded cows), fertility performance (i.e., calving performance, pregnancy diagnosis, and insemination data; n = 2,365,657 cows) together with animal mortality data (i.e., birth, farm movement, death, slaughter, and export events; n = 12,853,257 animals) were also available. Animal linear mixed models were used to quantify variance components for BoHV-1 as well as to estimate genetic correlations among traits. The estimated genetic parameters for the humoral immune response to BoHV-1 in the present study (i.e., heritability range: 0.09 to 0.16) were similar to estimates previously reported for clinical signs of bovine respiratory disease in dairy and beef cattle (i.e., heritability range: 0.05 to 0.11). Results from the present study suggest that breeding for resistance to BoHV-1 infection could reduce the incidence of respiratory disease in cattle while having little or no effect on genetic selection for milk yield or milk constituents (i.e., genetic correlations ranged from -0.13 to 0.17). Moreover, even though standard errors were large, results also suggest that breeding for resistance to BoHV-1 infection may indirectly improve fertility performance while also reducing the incidence of mortality in older animals (i.e., animals >182 d of age). Results can be used to inform breeding programs of potential genetic gains achievable for resistance to BoHV-1 infection in cattle.
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Affiliation(s)
- S C Ring
- Teagasc, Animal and Grassland Research and Innovation Centre, Moorepark, Fermoy, Co. Cork, Ireland P61C996; School of Veterinary Medicine, University College Dublin, Belfield, Dublin 4, Ireland D04W6F6
| | - D A Graham
- Animal Health Ireland, 4-5 The Archways, Carrick on Shannon, Co. Leitrim, Ireland N41WN27
| | - R G Sayers
- Teagasc, Animal and Grassland Research and Innovation Centre, Moorepark, Fermoy, Co. Cork, Ireland P61C996
| | - N Byrne
- Teagasc, Animal and Grassland Research and Innovation Centre, Moorepark, Fermoy, Co. Cork, Ireland P61C996
| | - M M Kelleher
- Irish Cattle Breeding Federation, Highfield House, Bandon, Co. Cork, Ireland P72X050
| | - M L Doherty
- School of Veterinary Medicine, University College Dublin, Belfield, Dublin 4, Ireland D04W6F6
| | - D P Berry
- Teagasc, Animal and Grassland Research and Innovation Centre, Moorepark, Fermoy, Co. Cork, Ireland P61C996.
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24
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Velasco Forte MN, Pushparajah K, Schaeffter T, Valverde Perez I, Rhode K, Ruijsink B, Alhrishy M, Byrne N, Chiribiri A, Ismail T, Hussain T, Razavi R, Roujol S. Improved passive catheter tracking with positive contrast for CMR-guided cardiac catheterization using partial saturation (pSAT). J Cardiovasc Magn Reson 2017; 19:60. [PMID: 28806996 PMCID: PMC5556659 DOI: 10.1186/s12968-017-0368-0] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2017] [Accepted: 06/29/2017] [Indexed: 11/24/2022] Open
Abstract
BACKGROUND Cardiac catheterization is a common procedure in patients with congenital heart disease (CHD). Although cardiovascular magnetic resonance imaging (CMR) represents a promising alternative approach to fluoroscopy guidance, simultaneous high contrast visualization of catheter, soft tissue and the blood pool remains challenging. In this study, a novel passive tracking technique is proposed for enhanced positive contrast visualization of gadolinium-filled balloon catheters using partial saturation (pSAT) magnetization preparation. METHODS The proposed pSAT sequence uses a single shot acquisition with balanced steady-state free precession (bSSFP) readout preceded by a partial saturation pre-pulse. This technique was initially evaluated in five healthy subjects. The pSAT sequence was compared to conventional bSSFP images acquired with (SAT) and without (Non-SAT) saturation pre-pulse. Signal-to-noise ratio (SNR) of the catheter balloon, blood and myocardium and the corresponding contrast-to-noise ratio (CNR) are reported. Subjective assessment of image suitability for CMR-guidance and ideal pSAT angle was performed by three cardiologists. The feasibility of the pSAT sequence is demonstrated in two adult patients undergoing CMR-guided cardiac catheterization. RESULTS The proposed pSAT approach provided better catheter balloon/blood contrast and catheter balloon/myocardium contrast than conventional Non-SAT sequences. It also resulted in better blood and myocardium SNR than SAT sequences. When averaged over all volunteers, images acquired with a pSAT angle of 20° to 40° enabled simultaneous visualization of the catheter balloon and the cardiovascular anatomy (blood and myocardium) and were found suitable for CMR-guidance in >93% of cases. The pSAT sequence was successfully used in two patients undergoing CMR-guided diagnostic cardiac catheterization. CONCLUSIONS The proposed pSAT sequence offers real-time, simultaneous, enhanced contrast visualization of the catheter balloon, soft tissues and blood. This technique provides improved passive tracking capabilities during CMR-guided catheterization in patients.
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Affiliation(s)
- Mari Nieves Velasco Forte
- Division of Imaging Sciences and Biomedical Engineering, King’s College London, St Thomas’ Hospital, 3rd Floor Lambeth Wing, Westminster Bridge Road, London, SE1 7EH UK
- Department of Congenital Heart Disease, Evelina London Children’s Hospital, Guy’s and St Thomas’ NHS Foundation Trust, London, UK
- Cardiovascular Pathology Unit, Institute of Biomedicine of Seville, IBIS, Virgen del Rocio University Hospital/CSIC/University of Seville, Seville, Spain
| | - Kuberan Pushparajah
- Division of Imaging Sciences and Biomedical Engineering, King’s College London, St Thomas’ Hospital, 3rd Floor Lambeth Wing, Westminster Bridge Road, London, SE1 7EH UK
- Department of Congenital Heart Disease, Evelina London Children’s Hospital, Guy’s and St Thomas’ NHS Foundation Trust, London, UK
| | - Tobias Schaeffter
- Division of Imaging Sciences and Biomedical Engineering, King’s College London, St Thomas’ Hospital, 3rd Floor Lambeth Wing, Westminster Bridge Road, London, SE1 7EH UK
- Department of Medical Physics, Guy’s and St. Thomas’ NHS Foundation Trust, London, UK
| | - Israel Valverde Perez
- Division of Imaging Sciences and Biomedical Engineering, King’s College London, St Thomas’ Hospital, 3rd Floor Lambeth Wing, Westminster Bridge Road, London, SE1 7EH UK
- Department of Congenital Heart Disease, Evelina London Children’s Hospital, Guy’s and St Thomas’ NHS Foundation Trust, London, UK
- Cardiovascular Pathology Unit, Institute of Biomedicine of Seville, IBIS, Virgen del Rocio University Hospital/CSIC/University of Seville, Seville, Spain
| | - Kawal Rhode
- Division of Imaging Sciences and Biomedical Engineering, King’s College London, St Thomas’ Hospital, 3rd Floor Lambeth Wing, Westminster Bridge Road, London, SE1 7EH UK
| | - Bram Ruijsink
- Division of Imaging Sciences and Biomedical Engineering, King’s College London, St Thomas’ Hospital, 3rd Floor Lambeth Wing, Westminster Bridge Road, London, SE1 7EH UK
| | - Mazen Alhrishy
- Division of Imaging Sciences and Biomedical Engineering, King’s College London, St Thomas’ Hospital, 3rd Floor Lambeth Wing, Westminster Bridge Road, London, SE1 7EH UK
| | - Nicholas Byrne
- Division of Imaging Sciences and Biomedical Engineering, King’s College London, St Thomas’ Hospital, 3rd Floor Lambeth Wing, Westminster Bridge Road, London, SE1 7EH UK
| | - Amedeo Chiribiri
- Division of Imaging Sciences and Biomedical Engineering, King’s College London, St Thomas’ Hospital, 3rd Floor Lambeth Wing, Westminster Bridge Road, London, SE1 7EH UK
| | - Tevfik Ismail
- Division of Imaging Sciences and Biomedical Engineering, King’s College London, St Thomas’ Hospital, 3rd Floor Lambeth Wing, Westminster Bridge Road, London, SE1 7EH UK
| | - Tarique Hussain
- Division of Imaging Sciences and Biomedical Engineering, King’s College London, St Thomas’ Hospital, 3rd Floor Lambeth Wing, Westminster Bridge Road, London, SE1 7EH UK
- Dept. of Pediatrics, University of Texas Southwestern Medical Center, 1935 Medical District Drive, Dallas, USA
| | - Reza Razavi
- Division of Imaging Sciences and Biomedical Engineering, King’s College London, St Thomas’ Hospital, 3rd Floor Lambeth Wing, Westminster Bridge Road, London, SE1 7EH UK
- Department of Congenital Heart Disease, Evelina London Children’s Hospital, Guy’s and St Thomas’ NHS Foundation Trust, London, UK
| | - Sébastien Roujol
- Division of Imaging Sciences and Biomedical Engineering, King’s College London, St Thomas’ Hospital, 3rd Floor Lambeth Wing, Westminster Bridge Road, London, SE1 7EH UK
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25
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Twomey AJ, Sayers RG, Carroll RI, Byrne N, Brien EO, Doherty ML, McClure JC, Graham DA, Berry DP. Genetic parameters for both a liver damage phenotype caused by and antibody response to phenotype in dairy and beef cattle. J Anim Sci 2017; 94:4109-4119. [PMID: 27898879 DOI: 10.2527/jas.2016-0621] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
is a helminth parasite of economic importance to the global cattle industry, with documented high international herd prevalence. The objective of the present study was to generate the first published genetic parameter estimates for liver damage caused by as well as antibody response to in cattle. Abattoir data on the presence of live , or -damaged livers, were available between the years 2012 and 2015, inclusive. A second data set was available on cows from 68 selected dairy herds with a blood ELISA test for antibody response to in autumn 2015. Animals were identified as exposed by using herd mate phenotype, and only exposed animals were retained for analysis. The abattoir data set consisted of 20,481 dairy cows and 75,041 young dairy and beef animals, whereas the study herd data set consisted of 6,912 dairy cows. (Co)variance components for phenotypes in both data sets were estimated using animal linear mixed models. Fixed effects included in the model for both data sets were contemporary group, heterosis coefficient, recombination loss coefficient, parity, age relative to parity/age group, and stage of lactation. An additional fixed effect of abattoir by date of slaughter was included in the model for the analysis of the abattoir data. Direct additive genetic effects and a residual effect were included as random effects for all analyses. After data edits, the prevalence of liver damage caused by in cows and young cattle was 47% and 20%, respectively. The prevalence of a positive antibody response to in cows from the study herd data was 36% after data edits. The heritability of as a binary trait for dairy cows in abattoir data and study herd data was 0.03 ± 0.01 and 0.09 ± 0.02, respectively; heritability in young cattle was 0.01 ± 0.005. The additive genetic SD of as a binary trait was 0.069 and 0.050 for cows and young cattle from the abattoir data, respectively, and 0.112 from the study herd cows. The genetic correlation between liver damage caused by in young cattle and cows from the abattoir data was 0.94 ± 0.312 and the genetic correlation between liver damage caused by in cows and positive antibody response to in cows in the study herd data was 0.37 ± 0.283.
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26
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Berry DP, Wolfe A, O'Donovan J, Byrne N, Sayers RG, Dodds KG, McEwan JC, O'Connor RE, McClure M, Purfield DC. Characterization of an X-chromosomal non-mosaic monosomy (59, X0) dairy heifer detected using routinely available single nucleotide polymorphism genotype data1. J Anim Sci 2017; 95:1042-1049. [DOI: 10.2527/jas.2016.1279] [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] [Indexed: 11/13/2022] Open
Affiliation(s)
- D. P. Berry
- Teagasc, Animal & Grassland Research and Innovation Centre, Moorepark, Fermoy, Co. Cork, Ireland
| | - A. Wolfe
- School of Veterinary Medicine, University College Dublin, Belfield, Dublin 4, Ireland
| | - J. O'Donovan
- Department of Agriculture, Food and the Marine, Regional Veterinary Laboratory, Model Farm Road, Cork, T12 XD51, Ireland
| | - N. Byrne
- Teagasc, Animal & Grassland Research and Innovation Centre, Moorepark, Fermoy, Co. Cork, Ireland
| | - R. G. Sayers
- Teagasc, Animal & Grassland Research and Innovation Centre, Moorepark, Fermoy, Co. Cork, Ireland
| | - K. G. Dodds
- Department of Agriculture, AgResearch, Invermay Agricultural Centre, Mosgiel 9092, New Zealand
| | - J. C. McEwan
- Department of Agriculture, AgResearch, Invermay Agricultural Centre, Mosgiel 9092, New Zealand
| | - R. E. O'Connor
- Department of Agriculture, University of Kent, School of Biosciences, University of Kent, Canterbury, CT2 7AF, UK
| | - M. McClure
- Department of Agriculture, Irish Cattle Breeding Federation, Bandon, Co. Cork, Ireland
| | - D. C. Purfield
- Teagasc, Animal & Grassland Research and Innovation Centre, Moorepark, Fermoy, Co. Cork, Ireland
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Byrne N, Foley C, Cotter M, O'Gorman S, Storan E, Marren P. Shiitake Flagellate Dermatitis: the First Case Reported in Ireland. Ir Med J 2017; 110:500. [PMID: 28657277] [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: 06/07/2023]
Abstract
Shiitake (Lentinula edodes) is the second most commonly consumed mushroom worldwide. The first case of shiitake mushroom flagellate dermatitis was described in Japan in 1977 and it is now being reported in the western world. We describe the first reported case in Ireland.
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Affiliation(s)
- N Byrne
- Department of Dermatology, University Hospital Galway, Galway
| | - C Foley
- Department of Dermatology, University Hospital Galway, Galway
| | - M Cotter
- Department of Pathology, University Hospital Galway, Galway
| | - S O'Gorman
- Department of Dermatology, University Hospital Galway, Galway
| | - E Storan
- Department of Dermatology, University Hospital Galway, Galway
| | - P Marren
- Department of Dermatology, University Hospital Galway, Galway
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Offerdahl EG, Arneson JB, Byrne N. Lighten the Load: Scaffolding Visual Literacy in Biochemistry and Molecular Biology. CBE Life Sci Educ 2017; 16:es1. [PMID: 28130273 PMCID: PMC5332056 DOI: 10.1187/cbe.16-06-0193] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/18/2016] [Revised: 10/05/2016] [Accepted: 10/07/2016] [Indexed: 05/09/2023]
Abstract
The development of scientific visual literacy has been identified as critical to the training of tomorrow's scientists and citizens alike. Within the context of the molecular life sciences in particular, visual representations frequently incorporate various components, such as discipline-specific graphical and diagrammatic features, varied levels of abstraction, and spatial arrangements of visual elements to convey information. Visual literacy is achieved when an individual understands the various ways in which a discipline uses these components to represent a particular way of knowing. Owing to the complex nature of visual representations, the activities through which visual literacy is developed have high cognitive load. Cognitive load can be reduced by first helping students to become fluent with the discrete components of visual representations before asking them to simultaneously integrate these components to extract the intended meaning of a representation. We present a taxonomy for characterizing one component of visual representations-the level of abstraction-as a first step in understanding the opportunities afforded students to develop fluency. Further, we demonstrate how our taxonomy can be used to analyze course assessments and spur discussions regarding the extent to which the development of visual literacy skills is supported by instruction within an undergraduate biochemistry curriculum.
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Affiliation(s)
- Erika G Offerdahl
- School of Molecular Biosciences, Washington State University, Pullman, WA 99164
- Department of Biological Sciences, North Dakota State University, Fargo, ND 58108
| | - Jessie B Arneson
- School of Molecular Biosciences, Washington State University, Pullman, WA 99164
- Department of Chemistry & Biochemistry, North Dakota State University, Fargo, ND 58108
| | - Nicholas Byrne
- Department of Chemistry, Tufts University, Medford, MA 02155
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Berry DP, Wolfe A, O’Donovan J, Byrne N, Sayers RG, Dodds KG, McEwan JC, O’Connor RE, McClure M, Purfield DC. Characterization of an X-chromosomal non-mosaic monosomy (59, X0) dairy heifer detected using routinely available single nucleotide polymorphism genotype data. J Anim Sci 2017. [DOI: 10.2527/jas2016.1279] [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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Brennan V, Cahill T, Byrne N, Breen DP. Oxygen Therapy in the Elderly: When Nasal Cannula Is Not Enough. Curr Geri Rep 2016. [DOI: 10.1007/s13670-016-0192-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Byrne N, Forte MNV, Narayan S, Greil GF, Valverde I, Hussain T. Steps towards automated image segmentation as part of a 3D printing pipeline in congenital heart disease. J Cardiovasc Magn Reson 2016. [PMCID: PMC5032177 DOI: 10.1186/1532-429x-18-s1-p190] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Munita MP, Rea R, Bloemhoff Y, Byrne N, Martinez-Ibeas AM, Sayers RG. Six-year longitudinal study of Fasciola hepatica bulk milk antibody ELISA in the dairy dense region of the Republic Ireland. Prev Vet Med 2016; 134:16-25. [PMID: 27836038 DOI: 10.1016/j.prevetmed.2016.09.024] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2016] [Revised: 09/26/2016] [Accepted: 09/28/2016] [Indexed: 10/20/2022]
Abstract
Completion of the F. hepatica lifecycle is dependent on suitable climatic conditions for development of immature stages of the parasite, and its snail intermediate host. Few investigations have been conducted regarding temporal variations in F. hepatica status in Irish dairy herds. The current study aimed to conduct a longitudinal study examining annual and seasonal trends in bulk milk seropositivity over six years, while also investigating associations with soil temperature, rainfall and flukicide treatment. Monthly bulk milk samples (BTM) were submitted by 28 herds between March 2009 and December 2014. In all, 1337 samples were analysed using a Cathepsin L1 ELISA. Soil temperature, rainfall and management data were obtained for general estimating equation and regression analyses. A general decrease in milk seropositivity was observed over the six year study period and was associated with an increased likelihood of treating for liver fluke (OR range=2.73-6.96). Annual and seasonal analyses of rainfall and F. hepatica BTM status yielded conflicting results. Higher annual rainfall (>1150mm) yielded a lower likelihood of being BTM positive than annual rainfall of <1000mm (OR=0.47; P=0.036). This was most likely due to farmers being more proactive in treating for F. hepatica in wetter years, although a 'wash effect' by high rainfall of the free living stages and snails cannot be ruled out. Higher seasonal rainfall (>120mm), however, was associated with increased ELISA S/P% values (Coefficient=9.63S/P%; P=0.001). Soil temperature was not found to influence F. hepatica to the same extent as rainfall and may reflect the lack of severe temperature fluctuations in Ireland. Flukicides active against both immature and mature F. hepatica were approximately half as likely to record a positive F. hepatica herd BTM status than a flukicide active against only the mature stage of the parasite (OR≅0.45; P<0.01). This study highlights the importance of examining both annual and seasonal F. hepatica data, which can vary significantly. Additionally, it highlights the progress that can be achieved in fluke control by application of a continuous BTM monitoring program.
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Affiliation(s)
- M P Munita
- Animal and Grassland Research and Innovation Centre (AGRIC), Teagasc, Moorepark, Fermoy, County Cork, Ireland; Biological Sciences, Cork Institute of Technology, Bishopstown, Cork, Ireland.
| | - R Rea
- Biological Sciences, Cork Institute of Technology, Bishopstown, Cork, Ireland
| | - Y Bloemhoff
- Animal and Grassland Research and Innovation Centre (AGRIC), Teagasc, Moorepark, Fermoy, County Cork, Ireland
| | - N Byrne
- Animal and Grassland Research and Innovation Centre (AGRIC), Teagasc, Moorepark, Fermoy, County Cork, Ireland
| | - A M Martinez-Ibeas
- Animal and Grassland Research and Innovation Centre (AGRIC), Teagasc, Moorepark, Fermoy, County Cork, Ireland
| | - R G Sayers
- Animal and Grassland Research and Innovation Centre (AGRIC), Teagasc, Moorepark, Fermoy, County Cork, Ireland
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Yeo XH, Ayoub A, Lee C, Byrne N, Currie WRJ. Neurosensory deficit following mandibular sagittal split osteotomy: A comparative study between positional screws and miniplates fixation. Surgeon 2016; 15:278-281. [PMID: 27522455 DOI: 10.1016/j.surge.2016.07.001] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2015] [Revised: 03/02/2016] [Accepted: 07/08/2016] [Indexed: 11/24/2022]
Abstract
This retrospective study compared the incidence of long-term inferior alveolar nerve injury for positional screws and miniplate fixation of bilateral sagittal split osteotomies carried out in 2 hospitals in Scotland. The study involved a mixture of mandibular setback and advancement surgery. The outcome of neurosensory deficit (NSD) was solely based on subjective assessment by the surgeons and patients' reported alteration in sensation. Numbness, tingling and any alterations in sensation beyond 6 months were considered long-term inferior alveolar nerve injury. This study was conducted on 28 sagittal split osteotomies (group 1) which were fixed with three upper border fixation screws and 36 sagittal split osteotomies (group 2) which were fixed with upper border sliding plate. The reported and documented neurosensory deficits were analysed. The difference in the number of cases of long-term inferior alveolar nerve injury between the 2 methods was 10.3%; the 95% confidence interval for the difference was [-2.94 to 23.5], p = 0.1612. Upper border plate was associated with more long-term NSD but there is insufficient evidence to prove that one method was more superior to the other. The need for a prospective randomized trial was highlighted.
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Affiliation(s)
- X H Yeo
- Glasgow University, Dental School, United Kingdom.
| | - A Ayoub
- Glasgow University, MVLS College, Dental School, University of Glasgow, United Kingdom
| | - C Lee
- University of Hong Kong, Hong Kong
| | - N Byrne
- University Hospital Crosshouse, Kilmarnock, United Kingdom
| | - W R J Currie
- University Hospital Crosshouse, Kilmarnock, United Kingdom
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Tandon A, Byrne N, Nieves Velasco Forte MDL, Zhang S, Dyer AK, Dillenbeck JM, Greil GF, Hussain T. Use of a semi-automated cardiac segmentation tool improves reproducibility and speed of segmentation of contaminated right heart magnetic resonance angiography. Int J Cardiovasc Imaging 2016; 32:1273-9. [PMID: 27173489 DOI: 10.1007/s10554-016-0906-0] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [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: 03/08/2016] [Accepted: 05/02/2016] [Indexed: 10/21/2022]
Abstract
Three-dimensional printing has an increasing number of clinical applications in pediatric cardiology. Time required for dataset segmentation and conversion to stereolithography (STL) format remains a significant limitation. We investigated the impact of semi-automated cardiovascular-specific segmentation software on time and reproducibility of segmentation. Magnetic resonance angiograms (MRAs) of 19 patients undergoing intervention for right ventricular outflow lesions were segmented to demonstrate the right heart. STLs were created by two independent clinicians using semi-automated cardiovascular segmentation (SAS) and traditional manual segmentation (MS). Time was recorded and geometric STL disagreement was determined (0 % = no disagreement, 100 % = complete disagreement). MRA datasets were categorized as clean when only right heart structures were present in the MRA, or contaminated when left heart structures were also present and required removal. Eighteen (seven clean and 11 contaminated) cases were successfully segmented with both methods. Time to STL for clean datasets was faster with MS than SAS [median 209 s (IQR 192-252) vs. 296 s (272-317), p = 0.018] while contaminated datasets were faster with SAS [455 s (384-561) vs. 866 s (310-1429), p = 0.033]. Interobserver STL geometric disagreement was significantly lower using SAS than MS overall (0.70 ± 1.15 % vs. 1.31 ± 1.52 %, p = 0.030), and for the contaminated subset (0.81 ± 1.08 % vs. 1.75 ± 1.57 %, p = 0.036). Most geometric disagreement occurred at areas where left heart contamination was removed. Semi-automated segmentation was faster and more reproducible for contaminated datasets, while MS was faster but equally reproducible for clean datasets. Semi-automated segmentation methods are preferable for contaminated datasets and continued refinement of these tools should be supported.
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Affiliation(s)
- Animesh Tandon
- Department of Pediatrics, University of Texas Southwestern Medical Center, Dallas, TX, USA. .,Department of Radiology, University of Texas Southwestern Medical Center, Dallas, TX, USA. .,Pediatric Cardiology, Children's Medical Center Dallas, 1935 Medical District Drive, Dallas, TX, 75235, USA.
| | - Nicholas Byrne
- Division of Imaging Sciences and Biomedical Engineering, King's College London, London, UK.,Medical Physics, Guy's and St. Thomas' NHS Foundation Trust, London, UK
| | | | - Song Zhang
- Department of Clinical Sciences, University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Adrian K Dyer
- Department of Pediatrics, University of Texas Southwestern Medical Center, Dallas, TX, USA.,Pediatric Cardiology, Children's Medical Center Dallas, 1935 Medical District Drive, Dallas, TX, 75235, USA
| | - Jeanne M Dillenbeck
- Department of Radiology, University of Texas Southwestern Medical Center, Dallas, TX, USA.,Pediatric Cardiology, Children's Medical Center Dallas, 1935 Medical District Drive, Dallas, TX, 75235, USA
| | - Gerald F Greil
- Department of Pediatrics, University of Texas Southwestern Medical Center, Dallas, TX, USA.,Department of Radiology, University of Texas Southwestern Medical Center, Dallas, TX, USA.,Pediatric Cardiology, Children's Medical Center Dallas, 1935 Medical District Drive, Dallas, TX, 75235, USA
| | - Tarique Hussain
- Department of Pediatrics, University of Texas Southwestern Medical Center, Dallas, TX, USA.,Department of Radiology, University of Texas Southwestern Medical Center, Dallas, TX, USA.,Pediatric Cardiology, Children's Medical Center Dallas, 1935 Medical District Drive, Dallas, TX, 75235, USA
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Byrne N, Velasco Forte M, Tandon A, Valverde I, Hussain T. A systematic review of image segmentation methodology, used in the additive manufacture of patient-specific 3D printed models of the cardiovascular system. JRSM Cardiovasc Dis 2016; 5:2048004016645467. [PMID: 27170842 PMCID: PMC4853939 DOI: 10.1177/2048004016645467] [Citation(s) in RCA: 64] [Impact Index Per Article: 8.0] [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: 03/10/2016] [Accepted: 03/29/2016] [Indexed: 12/01/2022] Open
Abstract
Background Shortcomings in existing methods of image segmentation preclude the widespread adoption of patient-specific 3D printing as a routine decision-making tool in the care of those with congenital heart disease. We sought to determine the range of cardiovascular segmentation methods and how long each of these methods takes. Methods A systematic review of literature was undertaken. Medical imaging modality, segmentation methods, segmentation time, segmentation descriptive quality (SDQ) and segmentation software were recorded. Results Totally 136 studies met the inclusion criteria (1 clinical trial; 80 journal articles; 55 conference, technical and case reports). The most frequently used image segmentation methods were brightness thresholding, region growing and manual editing, as supported by the most popular piece of proprietary software: Mimics (Materialise NV, Leuven, Belgium, 1992–2015). The use of bespoke software developed by individual authors was not uncommon. SDQ indicated that reporting of image segmentation methods was generally poor with only one in three accounts providing sufficient detail for their procedure to be reproduced. Conclusions and implication of key findings Predominantly anecdotal and case reporting precluded rigorous assessment of risk of bias and strength of evidence. This review finds a reliance on manual and semi-automated segmentation methods which demand a high level of expertise and a significant time commitment on the part of the operator. In light of the findings, we have made recommendations regarding reporting of 3D printing studies. We anticipate that these findings will encourage the development of advanced image segmentation methods.
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Affiliation(s)
- N Byrne
- Department of Medical Physics, Guy's and St. Thomas' NHS Foundation Trust, London, UK; Paediatric Cardiology, Evelina London Children's Hospital at Guy's and St. Thomas' NHS Foundation Trust, London, UK; Division of Imaging Sciences and Biomedical Engineering, King's College London, London, UK
| | - M Velasco Forte
- Paediatric Cardiology, Evelina London Children's Hospital at Guy's and St. Thomas' NHS Foundation Trust, London, UK; Division of Imaging Sciences and Biomedical Engineering, King's College London, London, UK
| | - A Tandon
- Departments of Paediatrics, University of Texas, Southwestern Medical Center, Dallas, TX, USA
| | - I Valverde
- Paediatric Cardiology, Evelina London Children's Hospital at Guy's and St. Thomas' NHS Foundation Trust, London, UK; Division of Imaging Sciences and Biomedical Engineering, King's College London, London, UK; Department of Paediatric Cardiology, Hospital Virgen del Rocio, Seville, Spain; Institute of Biomedicine of Seville, Seville, Spain
| | - T Hussain
- Division of Imaging Sciences and Biomedical Engineering, King's College London, London, UK; Departments of Paediatrics, University of Texas, Southwestern Medical Center, Dallas, TX, USA
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Mehta S, Byrne N, Karunanithy N, Farhadi J. 3D printing provides unrivalled bespoke teaching tools for autologous free flap breast reconstruction. J Plast Reconstr Aesthet Surg 2016; 69:578-80. [DOI: 10.1016/j.bjps.2015.12.026] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2015] [Accepted: 12/31/2015] [Indexed: 10/22/2022]
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Kennedy AE, Byrne N, Garcia AB, O'Mahony J, Sayers RG. Analysis of Johne's disease ELISA status and associated performance parameters in Irish dairy cows. BMC Vet Res 2016; 12:43. [PMID: 26935209 PMCID: PMC4776437 DOI: 10.1186/s12917-016-0667-y] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2015] [Accepted: 02/24/2016] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Infection with Mycobacterium avium subspecies paratuberculosis (MAP) has been associated with reductions in milk production in dairy cows and sub optimal fertility. The aim of this study was to highlight the production losses associated with testing MAP ELISA positive in Irish dairy cows. Secondary objectives included investigation of risk factors associated with testing MAP ELISA positive. A survey of management practices on study farms was also conducted, with examination of associations between management practices and herd MAP status. Blood samples were collected from 4188 breeding animals on 22 farms. Samples were ELISA tested using the ID Screen Paratuberculosis Indirect Screening Test. Production parameters examined included milk yield, milk fat, milk protein, somatic cell count, and calving interval. The association between MAP ELISA status and production data was investigated using multi-level mixed models. Logistic regression was used to identify risk factors for testing JD blood ELISA positive at individual cow level and to identify associations between farm management practices and herd MAP status. RESULTS Data were available for 3528 cows. The apparent prevalence recorded was 7.4%. Mixed model analysis revealed no statistically significant association between testing MAP ELISA positive and dairy cow production parameters. Risk factors associated with testing positive included larger sized herds being over twice more likely to test positive than smaller herds (OR 2.4 P = <0.001). Friesians were less likely to test positive relative to other breeds. A number of study farmers were engaged in management practices that have previously been identified as high risk for MAP transmission e.g., 73.1% pooled colostrum and 84.6% of study farmers used the calving area to house sick animals throughout the year. No significant associations however, were identified between farm management practices and herd MAP status. CONCLUSION No production losses were identified; however an apparent prevalence of 7.4% was recorded. With the abolition of EU milk quotas herd size in Ireland is expanding, as herds included in this study were larger than the national average, results may be indicative of future JD levels if no JD control programmes are implemented to minimise transmission.
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Affiliation(s)
- A E Kennedy
- Animal & Bioscience Research Department, Animal & Grassland Research and Innovation Centre, Teagasc, Moorepark, Fermoy, Co. Cork, Ireland.
- Department of Biological Sciences, Cork Institute of Technology, Bishopstown, Co. Cork, Ireland.
| | - N Byrne
- Animal & Bioscience Research Department, Animal & Grassland Research and Innovation Centre, Teagasc, Moorepark, Fermoy, Co. Cork, Ireland
| | - A B Garcia
- Animal & Bioscience Research Department, Animal & Grassland Research and Innovation Centre, Teagasc, Moorepark, Fermoy, Co. Cork, Ireland
| | - J O'Mahony
- Department of Biological Sciences, Cork Institute of Technology, Bishopstown, Co. Cork, Ireland
| | - R G Sayers
- Animal & Bioscience Research Department, Animal & Grassland Research and Innovation Centre, Teagasc, Moorepark, Fermoy, Co. Cork, Ireland.
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Byrne N, Botnar R, Hussain T, Keevil SF, Peel S. Automatic scar segmentation in dual inversion recovery images is more consistent with manual outlining than in conventional inversion recovery images. J Cardiovasc Magn Reson 2015. [PMCID: PMC4328291 DOI: 10.1186/1532-429x-17-s1-o48] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Abstract
In this study, choline carboxylate ionic liquids were explored as solvents to enhance the hydrolysis of cellulose by enzymes.
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Affiliation(s)
- S. M. Bong
- Institute for Frontier Materials
- Deakin University
- Victoria
- Australia
| | - K. Vongsanga
- Institute for Frontier Materials
- Deakin University
- Victoria
- Australia
| | - N. Byrne
- Institute for Frontier Materials
- Deakin University
- Victoria
- Australia
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Hughes D, Domaschenz R, Vlahovich N, Byrne N, Gray B, Singh MF, Brown M, Tajouri L. Steering specific sports training programs – The genetics of exercise-induced injuries involving tendon and bone. J Sci Med Sport 2014. [DOI: 10.1016/j.jsams.2014.11.334] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Planchard D, Chaput-Gras N, Barlesi F, Mazieres J, Byrne N, Vuillier D, Lacroix L, Besse B, Lanoy E, Wunder F, Jannin C, Malekzadeh K, Ngocamus M, Nash A, Di Pietro A, Soria JC. Phase I Study of Tremelimumab (Trem) in Combination with Gefitinib (Gef) in Epidermal Growth Factor Receptor Mutant (Egfr-Mut) Non-Small Cell Lung Cancer (Nsclc). Ann Oncol 2014. [DOI: 10.1093/annonc/mdu349.110] [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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Horner K, Byrne N, Cleghorn G, King N. Reproducibility of gastric emptying, appetite and energy intake in overweight and obese males. Obes Res Clin Pract 2012. [DOI: 10.1016/j.orcp.2012.08.170] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Nasir AA, Niyonkuru F, Nottidge TE, Adeleye AO, Ali S, Ameh EA, Bekele A, Bonet I, Derbew M, Ekenze SO, Oluwadare E, Jani PG, Labib M, Mezue WC, Mijumbi C, Zimmerman K, Baird R, Carsen S, Dreyer JS, Fairfull Smith RJ, Ferri-de-Barros F, Friedman J, Gill R, Gray A, Howe K, Bhoj I, Poenaru D, Rosen B, Yusuf AS, Abdur-Rahman LO, Ahmed BA, Panikar D, Abraham MK, Petroze RT, Groen RS, Ntaganda E, Kushner AL, Calland JF, Kyamanywa P, Ekrikpo U, Ifesanya AO, Nnabuko RE, Mazhar SB, Kotisso B, Shiferaw S, Ngonzi J, Dorman K, Byrne N, Satterthwaite L, Pittini R, Tajirian T, Kneebone R, Bello F, Desalegn D, Henok F, Dubrowsk A, Ugwumba FO, Obi UM, Ikem IC, Oginni LM, Howard A, Onyiah E, Iloabachie IC, Ohaegbulam SC, Kaggwa S, Tindimwebwa J, Mabweijano J, Lipnick M, Dubowitz G, Goetz L, Jayaraman S, Kwizera A, Ozgediz D, Matagane J, Bishop T, Guerrero A, Ganey M, Poenaru D, Park S, Simon D, Zirkle LG, Feibel RJ, Hannay JAF, Lane RHS, Cameron BH, Rambaran M, Gibson J, Howard A, Costas A, Meara JG, St-Albin M, Dyer G, Devi PR, Henshaw C, Wright J, Leah J, Spitzer RF, Caloia D, Omenge E, Chemwolo B, Zhou G, July J, Totimeh T, Mahmud R, Bernstein M, Ostrow B, Lowe J, Lawton C, Kozody LL, Coutts P, Nesbeth H, Revoredo A, Kirton R, Sibbald G, Dodge J, Giede C, Jimenez W, Cibulska P, Sinesat S, Bernardini M, McAlpine J, Finlayson S, Miller D, Elkanah O, Itsura P, Elit L. Bethune Round Table 2012: 12th Annual Conference: Filling the GapImpact of international collaboration on surgical services in a Nigerian tertiary centreSurgeons OverSeas Assessment of Surgical Needs (SOSAS) Rwanda: a useful rural health experience for medical studentsPreinternship Nigerian medical graduates lack basic musculoskeletal competencyDecompressive craniectomy: a low-cost surgical technique from a developing countryEfficacy of surgical management with manual vacuum aspiration versus medical management with misoprostol for evacuation of Lrst trimester miscarriages: a randomized trial in PakistanGaps in workforce for surgical care of children in Nigeria: increasing capacity through international partnershipsAnalyses of the gap between surgical resident and faculty surgeons concerning operating theatre teaching: report from Addis Ababa University, EthiopiaIntroduction of structured operative obstetric course at Mbarara Regional Referral Hospital with resultant reduction in maternal mortalityA training cascade for Ethiopian surgical and obstetrical care: an interprofessional, educational, leadership and skills training programUndergraduate surgery clerkship and the choice of surgery as a career: perspective from a developing countryIntramedullary nail versus external Lxation in management of open tibia fractures: experience in a developing countryThe College of Surgeons of East, Central and Southern Africa (COSECSA) Llling the gap; increasing the number of surgeonsClinical officer surgical training in Africa: COST-AfricaSecondary neuronal injuries following cervical spine trauma: audit of 68 consecutive patients admitted to neurosurgical services in Enugu, NigeriaCapacity building and workforce expansion in surgery, anesthesia and perioperative care: the GPAS model in UgandaKnowledge retention surveys: identifying the effectiveness of a road safety education program in Dar es Salaam, TanzaniaA tale of 2 fellowships: a comparative analysis of Canadian and East-African pediatric surgical trainingOutcomes of closed diaphyseal femur fractures treated with the SIGN nailManaging surgical emergencies: delivering a new course for the College of Surgeons of East Central and Southern AfricaAn evaluation of the exam for the University of Guyana Diploma in SurgeryPriority setting for health resource allocation in Brazil: a scoping literature reviewForeign aid effects on orthopedic capacity at the Hospital Saint Nicholas, HaitiReTHINK aid: international maternal health collaborationsEffect of electronic medical record implementation on patient and staff satisfaction, and chart completeness in a resource-limited antenatal clinic in KenyaImplementation of awake craniotomy in the developing world: data from China, Indonesia and AfricaRegionalization of diabetes care In Guyana, South AmericaQuantifying the burden of pediatric surgical disease due to delayed access to careImplementation of oncology surgery in Western Kenya. Can J Surg 2012. [DOI: 10.1503/cjs.016812] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022] Open
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Banks L, Byrne N, Henari S, Morris S, McElwain J. Nutritional status of elderly trauma patients presenting to a South Dublin Teaching Hospital. Eur Geriatr Med 2010. [DOI: 10.1016/j.eurger.2010.09.002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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Walsh S, Buckley F, Pierce K, Byrne N, Patton J, Dillon P. Effects of Breed and Feeding System on Milk Production, Body Weight, Body Condition Score, Reproductive Performance, and Postpartum Ovarian Function. J Dairy Sci 2008; 91:4401-13. [DOI: 10.3168/jds.2007-0818] [Citation(s) in RCA: 72] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Byrne N, Angell C. Protein Unfolding, and the “Tuning In” of Reversible Intermediate States, in Protic Ionic Liquid Media. J Mol Biol 2008; 378:707-14. [DOI: 10.1016/j.jmb.2008.02.050] [Citation(s) in RCA: 100] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2007] [Revised: 02/16/2008] [Accepted: 02/25/2008] [Indexed: 10/22/2022]
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Byrne N, Castric J, Lamour F, Cabon J, Quentel C. Study of the viral interference between infectious pancreatic necrosis virus (IPNV) and infectious haematopoietic necrosis virus (IHNV) in rainbow trout (Oncorhynchus mykiss). Fish Shellfish Immunol 2008; 24:489-497. [PMID: 18329899 DOI: 10.1016/j.fsi.2007.08.010] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/11/2007] [Revised: 08/20/2007] [Accepted: 08/31/2007] [Indexed: 05/26/2023]
Abstract
The resistance of rainbow trout (Oncorhynchus mykiss) to an infectious haematopoietic necrosis virus (IHNV) challenge following a preceding non-lethal infection with infectious pancreatic necrosis virus (IPNV) was investigated through experimental dual infections. Trout initially infected with IPNV were inoculated 14 days later with IHNV. Single infections of trout with 1 of the 2 viruses or with cell culture supernatant were also carried out and constituted control groups. No mortality was noted in fish after a single infection with IPNV. This virus had no influence on the head kidney leucocyte phagocytic activity and plasma haemolytic complement activity. IHNV induced a high mortality (72%) and reduced the macrophage phagocytic activity and complement haemolytic activity. It also induced a late production of anti-IHNV antibodies which occurred after clearance of the virus in the fish. In trout co-infected with both viruses, a mortality rate of 2% occurred and the immune parameters were similar to those observed in the fish infected with IPNV only, demonstrating that in co-infected trout IPNV inhibits the effects of IHNV. The studied parameters did not allow us to define the mechanism of interference occurring between these 2 viruses, but some hypothesis are put forward to explain the interference between the 2 viruses.
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Affiliation(s)
- N Byrne
- Agence Française de Sécurité Sanitaire des Aliments, Site de Brest, Laboratoire d'Etude et de Recherches en Pathologie des Poissons, Technopôle Brest-Iroise, BP70, 29280 Plouzané, France.
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Walsh S, Buckley F, Berry D, Rath M, Pierce K, Byrne N, Dillon P. Effects of Breed, Feeding System, and Parity on Udder Health and Milking Characteristics. J Dairy Sci 2007; 90:5767-79. [DOI: 10.3168/jds.2007-0389] [Citation(s) in RCA: 53] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Sun J, MacFarlane D, Byrne N, Forsyth M. Zwitterion effect in polyelectrolyte gels based on lithium methacrylate-N,N-dimethyl acrylamide copolymer. Electrochim Acta 2006. [DOI: 10.1016/j.electacta.2005.11.017] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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