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Collins CM, Malacrida B, Burke C, Kiely PA, Dunleavy EM. ATP synthase F 1 subunits recruited to centromeres by CENP-A are required for male meiosis. Nat Commun 2018; 9:2702. [PMID: 30006572 PMCID: PMC6045659 DOI: 10.1038/s41467-018-05093-9] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2017] [Accepted: 06/01/2018] [Indexed: 01/21/2023] Open
Abstract
The histone H3 variant CENP-A epigenetically defines the centromere and is critical for chromosome segregation. Here we report an interaction between CENP-A and subunits of the mitochondrial ATP synthase complex in the germline of male Drosophila. Furthermore, we report that knockdown of CENP-A, as well as subunits ATPsyn-α, -βlike (a testis-specific paralogue of ATPsyn-β) and -γ disrupts sister centromere cohesion in meiotic prophase I. We find that this disruption is likely independent of reduced ATP levels. We identify that ATPsyn-α and -βlike localise to meiotic centromeres and that this localisation is dependent on the presence of CENP-A. We show that ATPsyn-α directly interacts with the N-terminus of CENP-A in vitro and that truncation of its N terminus perturbs sister centromere cohesion in prophase I. We propose that the CENP-A N-terminus recruits ATPsyn-α and -βlike to centromeres to promote sister centromere cohesion in a nuclear function that is independent of oxidative phosphorylation. The histone H3 CENP-A is known to play a role during meiosis but its role in the testes in the fly is unknown. Here, the authors identify the mitochondrial metabolic protein complex ATP synthase F1 as interacting with CENP-A, promoting centromere cohesion during meiosis and affecting fly fertility.
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Tee A, Chow WL, Burke C, Guruprasad B. Cost-effectiveness of indacaterol/glycopyrronium in comparison with salmeterol/fluticasone combination for patients with moderate-to-severe chronic obstructive pulmonary disease: a LANTERN population analysis from Singapore. Singapore Med J 2018; 59:383-389. [PMID: 29546433 DOI: 10.11622/smedj.2018022] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
INTRODUCTION In light of the growing evidence base for better clinical results with the use of the dual bronchodilator indacaterol/glycopyrronium (IND/GLY) over inhaled corticosteroid-containing salmeterol/fluticasone combination (SFC), this study aimed to evaluate the cost-effectiveness of IND/GLY over SFC in patients with moderate-to-severe chronic obstructive pulmonary disease (COPD) who are at low risk of exacerbations, in the Singapore healthcare setting. METHODS A previously published patient-level simulation model was adapted for use in Singapore by applying local unit costs. The model was populated with clinical data from the LANTERN and ECLIPSE studies. Both costs and health outcomes were predicted for the lifetime horizon from a payer's perspective and were discounted at 3% per annum. Costs were expressed in 2015 USD exchange rates. Uncertainty was assessed through probabilistic sensitivity analysis. RESULTS Compared to SFC, use of IND/GLY increased mean life expectancy by 0.316 years and mean quality-adjusted life years (QALYs) by 0.246 years, and decreased mean total treatment costs (drug costs and management of associated events) by USD 1,474 over the entire lifetime horizon. IND/GLY was considered to be 100% cost-effective at a threshold of 1 × gross domestic product per capita. The cost-effectiveness acceptability curve showed that IND/GLY was 100% cost-effective at a willingness-to-pay threshold of USD 0 (additional cost) when compared to SFC. CONCLUSION IND/GLY was estimated to be highly cost-effective compared to SFC in patients with moderate-to-severe COPD who are not at high risk of exacerbations in the Singapore healthcare setting.
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Burke C, Dodd J, Duncan R, Klunk J. Tracing Leadership, Critical and Strategic Thinking. J Acad Nutr Diet 2017. [DOI: 10.1016/j.jand.2017.06.335] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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McCarthy CM, Unterscheider J, Burke C, Coulter J. Metastatic gestational choriocarcinoma: a masquerader in obstetrics. Ir J Med Sci 2017; 187:127-129. [PMID: 28550508 DOI: 10.1007/s11845-017-1636-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2016] [Accepted: 05/18/2017] [Indexed: 11/29/2022]
Abstract
We describe a case of a 36-year-old woman presenting with vaginal bleeding and suboptimally rising serum human chorionic gonadotropin levels, who was investigated for a pregnancy of unknown location. Ultrasonography, laparoscopy and dilatation and curettage failed to reveal signs of an intra-uterine or intra-abdominal pregnancy. Following computed tomography imaging, a mediastinal mass was histologically determined to be a gestational choriocarcinoma. Following surgical resection and chemotherapy, the patient recovered and proceeded to have a successful intra-uterine pregnancy. We describe this exceptionally rare case and emphasise the importance of follow-up of hCG levels in pregnancy of unknown location.
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Kim J, Isaacson A, Jain A, Yu H, Kim K, Stavas J, Dixon R, Burke C. Trends in IVC filter placement and retrieval at a single academic institution. J Vasc Interv Radiol 2017. [DOI: 10.1016/j.jvir.2016.12.1186] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
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Kim K, Burke C, Dixon R, Stavas J. Empiric transcatheter gastroduodenal artery embolization for massive duodenal ulcer bleeding with negative angiography compared with selective embolization with positive angiography. J Vasc Interv Radiol 2017. [DOI: 10.1016/j.jvir.2016.12.670] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
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Yu H, Al-Roubaie M, Desai H, Isaacson A, Burke C. Comparison of type II endoleak embolizations: embolization of endoleak nidus only versus embolization of endoleak nidus and branch vessels. J Vasc Interv Radiol 2017. [DOI: 10.1016/j.jvir.2016.12.1019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
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Moran A, Quinn A, Campbell M, Rooney B, Brady N, Burke C. Using pupillometry to evaluate attentional effort in quiet eye: A preliminary investigation. ACTA ACUST UNITED AC 2016. [DOI: 10.1037/spy0000066] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Vailati Riboni M, Meier S, Burke C, Kay JK, Mitchell MD, Walker CG, Crookenden MA, Heiser A, Rodriguez Zas SL, Roche JR, Loor JJ. 1340 Prepartum body condition score and plane of nutrition affect the hepatic transcriptome during the transition period in grazing dairy cows. J Anim Sci 2016. [DOI: 10.2527/jam2016-1340] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Burke C, Trinh K, Nadar V, Sanyal S. AxGxE: Using Flies to Interrogate the Complex Etiology of Neurodegenerative Disease. Curr Top Dev Biol 2016; 121:225-251. [PMID: 28057301 DOI: 10.1016/bs.ctdb.2016.07.007] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Progressive and late-onset neurological disorders such as Parkinson's disease and Alzheimer's disease affect up to 50 million people globally-a number postulated to double every 20 years in a continually aging population. While predisposing allelic variants in several genes clearly confer risk, individual age and specific environmental influences are equally important discriminators of disease onset age and progression. However, none of these factors can independently predict disease with significant precision. Therefore, we must actively develop models that accommodate contributions from all factors, potentially resulting in an A × G × E (age-gene-environment) metric that reflects individual cumulative risk and reliably forecasts disease outcomes. This effort can only be enabled by a deep quantitative understanding of the contribution of these factors to neurodegenerative disease, both individually and in combination. This is also an important consideration because neuronal loss typically precedes clinical presentation and disease-modifying therapies are contingent on early diagnosis that is likely to be informed by an accurate estimation of individual risk. Although epidemiological studies continue to make strong advances in these areas with the advent of powerful "omics"-based approaches, systematic phenotypic modeling of AxGxE interactions is currently more feasible in model organisms such as Drosophila melanogaster where all three parameters can be manipulated with manageable experimental burden. Here, we outline the advantages of using fruit flies for investigating these complex interactions and highlight potential approaches that might help synthesize existing information from diverse fields into a cogent description of age-dependent, environmental, and genetic risk factors in the pathophysiology of neurological disorders.
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Uzochukwu I, Burke C, Ni Bhuinneain M. Patient Satisfaction and Acceptability: A Journey through an Ambulatory Gynaecology Clinic in the West of Ireland. IRISH MEDICAL JOURNAL 2016; 109:420. [PMID: 27814437] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Ambulatory Gynaecology allows a 'see-and-treat' approach to managing gynaecological conditions, providing a more streamlined, integrated care pathway than the traditional gynaecology clinic and inpatient care model. This study was designed to assess patient satisfaction and acceptability of Ambulatory Gynaecology services in Mayo University Hospital, Castlebar, Ireland. It also provided for feedback from patients as to how the service might be improved. Eighty questionnaires were appropriately completed. Outcomes revealed positive responses in 84% with respect to their experience before attending the clinic, 93% relating to the Ambulatory Gynaecology clinic environment, 96% for communication within the service, 91% for their experience during the procedure and 88% for aftercare information. This study concludes that an ambulatory approach to managing a range of gynaecology referrals is a highly acceptable approach in an Irish gynaecological population. Valuable feedback was gained from the study, which will allow us to further enhance the service for our patients.
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Isaacson J, Yu H, Raynor M, Burke C. DISTINGUISHED ABSTRACT Prostatic artery embolization for prostates greater than 80 cm3: early results from a US trial. J Vasc Interv Radiol 2016. [DOI: 10.1016/j.jvir.2015.12.146] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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Steeds C, Baigorri B, Isaacson A, Burke C. Initial experience with the transradial approach for transarterial chemoembolization: is there more radiation to the patient? J Vasc Interv Radiol 2016. [DOI: 10.1016/j.jvir.2015.12.109] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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Kim K, Kim K, Burke C, Isaacson A, Yu H, Stavas J, Dixon R. Aborted yttrium-90 radioembolization in patients with hepatocellular carcinoma after mapping hepatic arteriography and lung shunt study. J Vasc Interv Radiol 2016. [DOI: 10.1016/j.jvir.2015.12.183] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
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Baigorri B, Steeds C, East J, Burke C, Isaacson A. Symptomatic improvement after prostatic artery embolization in patients with median lobe protrusion. J Vasc Interv Radiol 2016. [DOI: 10.1016/j.jvir.2015.12.150] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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Burke C, Cain H, Coleman N, Grando D, Hughes M, Johanesen P, Lategan J, Lloyd M, Markham J, Mohideen M, Waller K, Wang J. Threshold learning outcomes for a microbiology major. MICROBIOLOGY AUSTRALIA 2016. [DOI: 10.1071/ma16031] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
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Preece D, Lovett K, Lovett P, Burke C. The Adoption of TEACCH in Northamptonshire, UK. INTERNATIONAL JOURNAL OF MENTAL HEALTH 2015. [DOI: 10.1080/00207411.2000.11449489] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Kelly C, Lawlor C, Burke C, Barlow JW, Ramsey JM, Jefferies C, Cryan SA. High-throughput methods for screening liposome–macrophage cell interaction. J Liposome Res 2014; 25:211-221. [DOI: 10.3109/08982104.2014.987785] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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Burke C, Johnson EE, Bourgault C, Borgia M, O'Toole TP. Losing work: regional unemployment and its effect on homeless demographic characteristics, needs, and health care. J Health Care Poor Underserved 2014; 24:1391-402. [PMID: 23974407 DOI: 10.1353/hpu.2013.0150] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
BACKGROUND Who becomes homeless because of unemployment and what they need are poorly understood. METHODS Four-year time-series study. Homeless characteristics, co-morbid conditions, and needs are correlated with unemployment rates. RESULTS The unemployment rate averaged 6.7% during years 1-2 (N=198) and 11.8% during years 3-4 (N=202). Those presenting during high unemployment worked most recently in clerical positions (10.4% vs. 4.5%, p= .02) and reported unemployment (OR=2.0; 95% CI; 1.07, 3.76) and unaffordable housing (28.7% vs. 15.2%; p<.01) causing homelessness. Those reporting unemployment were more likely to be local residents (OR=2.1; CI=1.01, 4.53), but less likely to have family support (OR=0.4; CI=0.19, 0.87). While comparable proportions reported mental health conditions and received care, more high unemployment individuals reported needing additional care (59.9% vs. 42.9%; p<.001) and that this was necessary for leaving homelessness (58.9% vs. 44.1%; p=.05). CONCLUSIONS High unemployment expands the population vulnerable to homelessness and influences health care needs and social needs.
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Abstract
At least 25% of individuals with sickle cell disease will have a neurological complication over their lifetime, often as early as in childhood. Neuroradiological findings in patients with sickle cell disease are common and include acute territorial infarction, silent ischaemia and intracranial haemorrhage. Imaging abnormalities are typically, but not always, manifestations of the underlying vasculopathy. Coexisting acute and chronic pathology may pose challenges to interpretation.
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Saha S, Burke C, Desai A, Vijayanathan S, Gnanasegaran G. SPECT-CT: applications in musculoskeletal radiology. Br J Radiol 2013; 86:20120519. [PMID: 24096590 DOI: 10.1259/bjr.20120519] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
This article reviews the technique, basic science principles and applications of integrated single photon emission CT (SPECT)-CT in musculoskeletal radiology. A review of the current evidence on the topic was undertaken, and selected clinical cases from the authors' institution have been used for illustration. SPECT-CT is a technology with emerging applications that offers technical advantages to image fusion of separately acquired SPECT and CT studies. The prevailing evidence indicates that there may be benefit in adding SPECT-CT to conventional imaging algorithms during the evaluation of some malignant and benign musculoskeletal conditions. SPECT-CT can improve both sensitivity and specificity by reducing equivocal interpretation in comparison to planar scintigraphy or SPECT alone. The evidence base for SPECT-CT in musculoskeletal radiology is still evolving. There is a lack of evidence comparing SPECT-CT with MRI in many key indications, and further research is required in these areas.
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Burke C, Taylor AG, Ring EJ, Kerlan RK. Creation of a percutaneous mesocaval shunt to control variceal bleeding in a child. Pediatr Radiol 2013; 43:1218-20. [PMID: 23447003 DOI: 10.1007/s00247-013-2643-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/09/2012] [Revised: 12/12/2012] [Accepted: 01/10/2013] [Indexed: 10/27/2022]
Abstract
Although transjugular intrahepatic portosystemic shunt (TIPS) placement is the standard procedure for the treatment of portal hypertension, it is often impossible to perform in patients with extrahepatic portal vein occlusion. In these patients, options for decompressing the liver are few. In this report, we present a novel solution for managing gastro-esophageal hemorrhage in a child with portal hypertension and extrahepatic portal vein occlusion, through the creation of a percutaneous mesocaval shunt.
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Burke C. Thanks, Prof. Rayward, for Explaining…. LIBRARY TRENDS 2013. [DOI: 10.1353/lib.2013.0036] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Helyar V, McWilliams S, Burke C, Charles-Edwards G. MRI for PIP implant rupture: appearances and rupture rate. Breast Cancer Res 2012. [PMCID: PMC3542649 DOI: 10.1186/bcr3297] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Burke C, Thomas R, Inglis C, Baldwin A, Ramesar K, Grace R, Howlett DC. Ultrasound-guided core biopsy in the diagnosis of lymphoma of the head and neck. A 9 year experience. Br J Radiol 2011; 84:727-32. [PMID: 21427181 DOI: 10.1259/bjr/60580076] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
OBJECTIVES This retrospective study aimed to evaluate the diagnostic utility of ultrasound-guided core biopsy (USCB) in lymphoma of the head and neck, in particular whether core biopsy can provide sufficient diagnostic information for definitive treatment. METHODS All lymphomas diagnosed in the head and neck at Eastbourne General Hospital between January 2000 and June 2009 were identified. Radiology and pathology reports were reviewed and the diagnostic techniques recorded. The type of biopsy (fine needle aspiration, needle core, surgical excision biopsy) used to establish a diagnosis sufficient to allow treatment, i.e. the "index" diagnostic technique, was identified. Previous inconclusive or inadequate biopsies were noted. Pathology reports based on USCB were graded 0-3 according to diagnostic completeness and ability to provide treatment information. RESULTS Of 691 overall cases of lymphoma diagnosed over the 9 year period, 171 different patients presented with lymphoma in the head and neck. Of these 171, 83 had USCB biopsy during diagnostic work up. 60 were regarded as grade 3 where a confident diagnosis of lymphoma was made. In seven patients, clinical management proceeded on the basis of a suggestive (grade 2) pathology report without surgical excision, and these were therefore also included as "index" biopsies. Overall therefore, 67/83 core biopsies (81%) provided adequate information to allow treatment. Surgical excision biopsy was the index modality in 104 cases. CONCLUSION In the majority of cases USCB is adequate for confident histopathological diagnosis avoiding the need for surgical excision biopsy in cases of suspected head and neck lymphoma.
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