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Steiner M, Huettmann F, Bryans N, Barker B. With super SDMs (machine learning, open access big data, and the cloud) towards more holistic global squirrel hotspots and coldspots. Sci Rep 2024; 14:5204. [PMID: 38433273 PMCID: PMC10909860 DOI: 10.1038/s41598-024-55173-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2023] [Accepted: 02/21/2024] [Indexed: 03/05/2024] Open
Abstract
Species-habitat associations are correlative, can be quantified, and used for powerful inference. Nowadays, Species Distribution Models (SDMs) play a big role, e.g. using Machine Learning and AI algorithms, but their best-available technical opportunities remain still not used for their potential e.g. in the policy sector. Here we present Super SDMs that invoke ML, OA Big Data, and the Cloud with a workflow for the best-possible inference for the 300 + global squirrel species. Such global Big Data models are especially important for the many marginalized squirrel species and the high number of endangered and data-deficient species in the world, specifically in tropical regions. While our work shows common issues with SDMs and the maxent algorithm ('Shallow Learning'), here we present a multi-species Big Data SDM template for subsequent ensemble models and generic progress to tackle global species hotspot and coldspot assessments for a more inclusive and holistic inference.
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Affiliation(s)
- Moriz Steiner
- IUCN Small Mammal Specialist Group (SMSG), IUCN, Rue Mauverney 28, 1196, Gland, Switzerland.
- IUCN Species Survival Commission (SSC), IUCN, Rue Mauverney 28, 1196, Gland, Switzerland.
- EWHALE Lab-Biology and Wildlife Department, Institute of Arctic Biology, University of Alaska Fairbanks (UAF), Fairbanks, AK, USA.
| | - F Huettmann
- EWHALE Lab-Biology and Wildlife Department, Institute of Arctic Biology, University of Alaska Fairbanks (UAF), Fairbanks, AK, USA
| | - N Bryans
- Oracle for Research, 2300 Oracle Wy, Austin, TX, 78741, USA
| | - B Barker
- Oracle for Research, 2300 Oracle Wy, Austin, TX, 78741, USA
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Barker B, Hanlon M, Wade S, Veale D, Canavan M, Fearon U. AB0074 RAPAMYCIN INHIBITS IL-1β INDUCED RA SYNOVIAL FIBROBLAST ACTIVATION, AN EFFECT ASSOCIATED WITH ALTERATION IN THEIR METABOLIC PROFILE. Ann Rheum Dis 2022. [DOI: 10.1136/annrheumdis-2022-eular.2642] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
BackgroundRheumatoid Arthritis (RA) is a common autoimmune disease characterized by systemic polyarthritis affecting the joints, most notably of the hands and feet. A fundamental feature of RA is inflammation within the synovial joint due to neo-angiogenesis which facilitates an influx of immune cells and release of pro-inflammatory mediators.ObjectivesIn this study we investigate the effect of metabolic reprogramming on IL-1β regulation of stromal cell activation and invasiveness in RA.MethodsPrimary RA synovial fibroblasts (RAFLS) and human umbilical vein endothelial cells (HUVEC) were cultured with IL-1 β (2 ng/mL) alone or in combination with the metabolic inhibitor rapamycin (100nM). Pro-inflammatory cytokines IL-6, MCP-1 and Rantes were quantified by real-time PCR and ELISA. Cellular adhesion and network formation were quantified by adhesion binding assays and Matrigel invasion assays. pS6 (a surrogate marker of the mTOR pathway) was quantified by flow cytometry. Cellular bioenergetics was assessed using the Seahorse-XFe-technology and key glycolytic genes (HK2, PKM2, G6DP) were quantified by real-time PCR. YAP was measured by Western-Blot.ResultsIL-1β significantly induced secretion of IL-6 (p<0.05), MCP-1 (p<0.01) and Rantes (p<0.01) from RAFLS. IL-1β induced leukocyte adhesion to RAFLS (p=0.062) and HUVEC (p=0.051), in addition to an increase RAFLS and HUVEC network formation. This was accompanied by a change in the cellular bioenergetic profile of cells, where IL-1β increased the ECAR/OCR ratio in favour of glycolysis for RAFLS (p<0.05) and HUVEC, and induced the % frequency in the cell surface expression of pS6 on RAFLS. Rapamycin inhibited IL-1β -induced leukocyte adhesion and network formation in RAFLS (p<0.05; p<0.05 respectively) and HUVEC (p<0.05). Rapamycin inhibited IL-1β -induced Rantes secretion (p<0.05), no effect observed for IL-6 and MCP-1. Rapamycin also inhibited IL-1b-induce YAP protein expression which is involved in FLS invasive capacity through cytoskeletal rearrangement. This was accompanied by a shift in the metabolic profile from a glycolytic/energetic state back towards a more quiescent state.ConclusionRapamycin inhibits IL-1β -induced pro-inflammatory mechanisms in key stromal cells involved in the pathogenesis of RA. Targeting metabolism may lead to new potential therapeutic or adjuvant strategies, particularly for those patients who have sub-optimal responses to current treatments.References[1]Kim EK, Min HK, Lee SY, Kim DS, Ryu JG, Na HS, Jung KA, Choi JW, Park SH, Cho ML. Metformin rescues rapamycin-induced mitochondrial dysfunction and attenuates rheumatoid arthritis with metabolic syndrome. Arthritis Res Ther. 2020 Apr 10;22(1):77. doi: 10.1186/s13075-020-02174-3. PMID: 32276645; PMCID: PMC7149912.Disclosure of InterestsNone declared
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Barker B, Humpherys J, Lyng G, Lytle J. Evans function computation for the stability of travelling waves. Philos Trans A Math Phys Eng Sci 2018; 376:rsta.2017.0184. [PMID: 29507169 PMCID: PMC5869606 DOI: 10.1098/rsta.2017.0184] [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] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 11/13/2017] [Indexed: 06/08/2023]
Abstract
In recent years, the Evans function has become an important tool for the determination of stability of travelling waves. This function, a Wronskian of decaying solutions of the eigenvalue equation, is useful both analytically and computationally for the spectral analysis of the linearized operator about the wave. In particular, Evans-function computation allows one to locate any unstable eigenvalues of the linear operator (if they exist); this allows one to establish spectral stability of a given wave and identify bifurcation points (loss of stability) as model parameters vary. In this paper, we review computational aspects of the Evans function and apply it to multidimensional detonation waves.This article is part of the theme issue 'Stability of nonlinear waves and patterns and related topics'.
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Affiliation(s)
- B Barker
- Department of Mathematics, Brigham Young University, Provo, UT 84602, USA
| | - J Humpherys
- Department of Mathematics, Brigham Young University, Provo, UT 84602, USA
| | - G Lyng
- Department of Mathematics and Statistics, University of Wyoming, Laramie, WY 82071, USA
| | - J Lytle
- Department of Mathematics, Brigham Young University, Provo, UT 84602, USA
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Wang Z, Singh R, Miller BE, Tal-Singer R, Van Horn S, Tomsho L, Mackay A, Allinson JP, Webb AJ, Brookes AJ, George LM, Barker B, Kolsum U, Donnelly LE, Belchamber K, Barnes PJ, Singh D, Brightling CE, Donaldson GC, Wedzicha JA, Brown JR. Sputum microbiome temporal variability and dysbiosis in chronic obstructive pulmonary disease exacerbations: an analysis of the COPDMAP study. Thorax 2017; 73:331-338. [DOI: 10.1136/thoraxjnl-2017-210741] [Citation(s) in RCA: 71] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2017] [Revised: 11/02/2017] [Accepted: 11/27/2017] [Indexed: 12/31/2022]
Abstract
BackgroundRecent studies suggest that lung microbiome dysbiosis, the disease associated disruption of the lung microbial community, might play a key role in chronic obstructive pulmonary disease (COPD) exacerbations. However, characterising temporal variability of the microbiome from large longitudinal COPD cohorts is needed to better understand this phenomenon.MethodsWe performed a 16S ribosomal RNA survey of microbiome on 716 sputum samples collected longitudinally at baseline and exacerbations from 281 subjects with COPD at three UK clinical centres as part of the COPDMAP consortium.ResultsThe microbiome composition was similar among centres and between stable and exacerbations except for a small significant decrease of Veillonella at exacerbations. The abundance of Moraxella was negatively associated with bacterial alpha diversity. Microbiomes were distinct between exacerbations associated with bacteria versus eosinophilic airway inflammation. Dysbiosis at exacerbations, measured as significant within subject deviation of microbial composition relative to baseline, was present in 41% of exacerbations. Dysbiosis was associated with increased exacerbation severity indicated by a greater fall in forced expiratory volume in one second, forced vital capacity and a greater increase in CAT score, particularly in exacerbations with concurrent eosinophilic inflammation. There was a significant difference of temporal variability of microbial alpha and beta diversity among centres. The variation of beta diversity significantly decreased in those subjects with frequent historical exacerbations.ConclusionsMicrobial dysbiosis is a feature of some exacerbations and its presence, especially in concert with eosinophilic inflammation, is associated with more severe exacerbations indicated by a greater fall in lung function.Trial registration numberResults, NCT01620645.
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Wright AKA, Newby C, Hartley RA, Mistry V, Gupta S, Berair R, Roach KM, Saunders R, Thornton T, Shelley M, Edwards K, Barker B, Brightling CE. Myeloid-derived suppressor cell-like fibrocytes are increased and associated with preserved lung function in chronic obstructive pulmonary disease. Allergy 2017; 72:645-655. [PMID: 27709630 DOI: 10.1111/all.13061] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/03/2016] [Indexed: 12/17/2022]
Abstract
BACKGROUND The role of fibrocytes in chronic obstructive pulmonary disease (COPD) is unknown. We sought to enumerate blood and tissue fibrocytes in COPD and determine the association of blood fibrocytes with clinical features of disease. METHODS Utilizing flow cytometry to identify circulating, collagen type 1+ cells, we found two populations: (i) CD45+ CD34+ (fibrocytes) and (ii) CD45+ CD34- [myeloid-derived suppressor cell (MDSC)-like fibrocytes] cells in stable COPD (n = 41) and control (n = 29) subjects. Lung resection material from a separate group of subjects with (n = 11) or without (n = 11) COPD was collected for tissue fibrocyte detection. We examined circulating fibrocyte populations for correlations with clinical parameters including quantitative computed tomography (qCT) and determined pathways of association between correlated variables using a path analysis model. RESULTS Blood and tissue fibrocytes were not increased compared to control subjects nor were blood fibrocytes associated with lung function or qCT, but were increased in eosinophilic COPD. Myeloid-derived suppressor cell-like fibrocytes were increased in COPD compared to controls [2.3 (1.1-4.9), P = 0.038]. Our path analysis model showed that collagen type 1 intensity for MDSC-like fibrocytes was positively associated with lung function through associations with air trapping, predominately in the upper lobes. CONCLUSION We have demonstrated that two circulating populations of fibrocyte exist in COPD, with distinct clinical associations, but are not prevalent in proximal or small airway tissue. Blood MDSC-like fibrocytes, however, are increased and associated with preserved lung function through a small airway-dependent mechanism in COPD.
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Affiliation(s)
- A. K. A. Wright
- NIHR Leicester Respiratory Biomedical Unit; Institute of Lung Health; University Hospitals of Leicester NHS Trust; Leicester UK
- Department of Infection, Immunity and Inflammation; University of Leicester; Leicester UK
| | - C. Newby
- Department of Infection, Immunity and Inflammation; University of Leicester; Leicester UK
| | - R. A. Hartley
- NIHR Leicester Respiratory Biomedical Unit; Institute of Lung Health; University Hospitals of Leicester NHS Trust; Leicester UK
| | - V. Mistry
- Department of Infection, Immunity and Inflammation; University of Leicester; Leicester UK
| | - S. Gupta
- NIHR Leicester Respiratory Biomedical Unit; Institute of Lung Health; University Hospitals of Leicester NHS Trust; Leicester UK
| | - R. Berair
- Department of Infection, Immunity and Inflammation; University of Leicester; Leicester UK
| | - K. M. Roach
- Department of Infection, Immunity and Inflammation; University of Leicester; Leicester UK
| | - R. Saunders
- Department of Infection, Immunity and Inflammation; University of Leicester; Leicester UK
| | - T. Thornton
- NIHR Leicester Respiratory Biomedical Unit; Institute of Lung Health; University Hospitals of Leicester NHS Trust; Leicester UK
| | - M. Shelley
- NIHR Leicester Respiratory Biomedical Unit; Institute of Lung Health; University Hospitals of Leicester NHS Trust; Leicester UK
| | - K. Edwards
- NIHR Leicester Respiratory Biomedical Unit; Institute of Lung Health; University Hospitals of Leicester NHS Trust; Leicester UK
| | - B. Barker
- Department of Infection, Immunity and Inflammation; University of Leicester; Leicester UK
| | - C. E. Brightling
- NIHR Leicester Respiratory Biomedical Unit; Institute of Lung Health; University Hospitals of Leicester NHS Trust; Leicester UK
- Department of Infection, Immunity and Inflammation; University of Leicester; Leicester UK
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Teixeira M, Moreno L, Stielow B, Muszewska A, Hainaut M, Gonzaga L, Abouelleil A, Patané J, Priest M, Souza R, Young S, Ferreira K, Zeng Q, da Cunha M, Gladki A, Barker B, Vicente V, de Souza E, Almeida S, Henrissat B, Vasconcelos A, Deng S, Voglmayr H, Moussa T, Gorbushina A, Felipe M, Cuomo C, de Hoog GS. Exploring the genomic diversity of black yeasts and relatives ( Chaetothyriales, Ascomycota). Stud Mycol 2017; 86:1-28. [PMID: 28348446 PMCID: PMC5358931 DOI: 10.1016/j.simyco.2017.01.001] [Citation(s) in RCA: 110] [Impact Index Per Article: 15.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
Abstract
The order Chaetothyriales (Pezizomycotina, Ascomycetes) harbours obligatorily melanised fungi and includes numerous etiologic agents of chromoblastomycosis, phaeohyphomycosis and other diseases of vertebrate hosts. Diseases range from mild cutaneous to fatal cerebral or disseminated infections and affect humans and cold-blooded animals globally. In addition, Chaetothyriales comprise species with aquatic, rock-inhabiting, ant-associated, and mycoparasitic life-styles, as well as species that tolerate toxic compounds, suggesting a high degree of versatile extremotolerance. To understand their biology and divergent niche occupation, we sequenced and annotated a set of 23 genomes of main the human opportunists within the Chaetothyriales as well as related environmental species. Our analyses included fungi with diverse life-styles, namely opportunistic pathogens and closely related saprobes, to identify genomic adaptations related to pathogenesis. Furthermore, ecological preferences of Chaetothyriales were analysed, in conjuncture with the order-level phylogeny based on conserved ribosomal genes. General characteristics, phylogenomic relationships, transposable elements, sex-related genes, protein family evolution, genes related to protein degradation (MEROPS), carbohydrate-active enzymes (CAZymes), melanin synthesis and secondary metabolism were investigated and compared between species. Genome assemblies varied from 25.81 Mb (Capronia coronata) to 43.03 Mb (Cladophialophora immunda). The bantiana-clade contained the highest number of predicted genes (12 817 on average) as well as larger genomes. We found a low content of mobile elements, with DNA transposons from Tc1/Mariner superfamily being the most abundant across analysed species. Additionally, we identified a reduction of carbohydrate degrading enzymes, specifically many of the Glycosyl Hydrolase (GH) class, while most of the Pectin Lyase (PL) genes were lost in etiological agents of chromoblastomycosis and phaeohyphomycosis. An expansion was found in protein degrading peptidase enzyme families S12 (serine-type D-Ala-D-Ala carboxypeptidases) and M38 (isoaspartyl dipeptidases). Based on genomic information, a wide range of abilities of melanin biosynthesis was revealed; genes related to metabolically distinct DHN, DOPA and pyomelanin pathways were identified. The MAT (MAting Type) locus and other sex-related genes were recognized in all 23 black fungi. Members of the asexual genera Fonsecaea and Cladophialophora appear to be heterothallic with a single copy of either MAT-1-1 or MAT-1-2 in each individual. All Capronia species are homothallic as both MAT1-1 and MAT1-2 genes were found in each single genome. The genomic synteny of the MAT-locus flanking genes (SLA2-APN2-COX13) is not conserved in black fungi as is commonly observed in Eurotiomycetes, indicating a unique genomic context for MAT in those species. The heterokaryon (het) genes expansion associated with the low selective pressure at the MAT-locus suggests that a parasexual cycle may play an important role in generating diversity among those fungi.
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Affiliation(s)
- M.M. Teixeira
- Division of Pathogen Genomics, Translational Genomics Research Institute (TGen), Flagstaff, AZ, USA
- Department of Cell Biology, University of Brasília, Brasilia, Brazil
| | - L.F. Moreno
- Westerdijk Fungal Biodiversity Institute, Utrecht, The Netherlands
- Department of Basic Pathology, Federal University of Paraná State, Curitiba, PR, Brazi1
- Institute of Biodiversity and Ecosystem Dynamics, University of Amsterdam, Amsterdam, The Netherlands
| | - B.J. Stielow
- Westerdijk Fungal Biodiversity Institute, Utrecht, The Netherlands
| | - A. Muszewska
- Institute of Biochemistry and Biophysics, Polish Academy of Sciences, Warsaw, Poland
| | - M. Hainaut
- Université Aix-Marseille (CNRS), Marseille, France
| | - L. Gonzaga
- The National Laboratory for Scientific Computing (LNCC), Petropolis, Brazil
| | | | - J.S.L. Patané
- Department of Biochemistry, University of São Paulo, Brazil
| | - M. Priest
- Broad Institute of MIT and Harvard, Cambridge, USA
| | - R. Souza
- The National Laboratory for Scientific Computing (LNCC), Petropolis, Brazil
| | - S. Young
- Broad Institute of MIT and Harvard, Cambridge, USA
| | - K.S. Ferreira
- Department of Biological Sciences, Federal University of São Paulo, Diadema, SP, Brazil
| | - Q. Zeng
- Broad Institute of MIT and Harvard, Cambridge, USA
| | - M.M.L. da Cunha
- Núcleo Multidisciplinar de Pesquisa em Biologia UFRJ-Xerém-NUMPEX-BIO, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - A. Gladki
- Institute of Biochemistry and Biophysics, Polish Academy of Sciences, Warsaw, Poland
| | - B. Barker
- Division of Pathogen Genomics, Translational Genomics Research Institute (TGen), Flagstaff, AZ, USA
| | - V.A. Vicente
- Department of Basic Pathology, Federal University of Paraná State, Curitiba, PR, Brazi1
| | - E.M. de Souza
- Department of Biochemistry and Molecular Biology, Federal University of Paraná, Curitiba, PR, Brazil
| | - S. Almeida
- Department of Clinical and Toxicological Analysis, University of São Paulo, São Paulo, SP, Brazil
| | - B. Henrissat
- Université Aix-Marseille (CNRS), Marseille, France
| | - A.T.R. Vasconcelos
- The National Laboratory for Scientific Computing (LNCC), Petropolis, Brazil
| | - S. Deng
- Shanghai Institute of Medical Mycology, Changzheng Hospital, Second Military Medical University, Shanghai, China
| | - H. Voglmayr
- Department of Systematic and Evolutionary Botany, University of Vienna, Vienna, Austria
| | - T.A.A. Moussa
- Biological Sciences Department, Faculty of Science, King Abdulaziz University, Jeddah, Saudi Arabia
- Botany and Microbiology Department, Faculty of Science, Cairo University, Giza, Egypt
| | - A. Gorbushina
- Federal Institute for Material Research and Testing (BAM), Berlin, Germany
| | - M.S.S. Felipe
- Department of Cell Biology, University of Brasília, Brasilia, Brazil
| | - C.A. Cuomo
- Broad Institute of MIT and Harvard, Cambridge, USA
| | - G. Sybren de Hoog
- Westerdijk Fungal Biodiversity Institute, Utrecht, The Netherlands
- Department of Basic Pathology, Federal University of Paraná State, Curitiba, PR, Brazi1
- Institute of Biodiversity and Ecosystem Dynamics, University of Amsterdam, Amsterdam, The Netherlands
- Biological Sciences Department, Faculty of Science, King Abdulaziz University, Jeddah, Saudi Arabia
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Lawrence PJ, Kolsum U, Gupta V, Donaldson G, Singh R, Barker B, George L, Webb A, Brookes AJ, Brightling C, Wedzicha J, Singh D. Characteristics and longitudinal progression of chronic obstructive pulmonary disease in GOLD B patients. BMC Pulm Med 2017; 17:42. [PMID: 28219428 PMCID: PMC5319137 DOI: 10.1186/s12890-017-0384-8] [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] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2016] [Accepted: 02/11/2017] [Indexed: 11/12/2022] Open
Abstract
Background The characteristics and natural history of GOLD B COPD patients are not well described. The clinical characteristics and natural history of GOLD B patients over 1 year in a multicentre cohort of COPD patients in the COPDMAP study were assessed. We aimed to identify the subgroup of patients who progressed to GOLD D (unstable GOLD B patients) and identify characteristics associated with progression. Methods Three hundred seventy COPD patients were assessed at baseline and 12 months thereafter. Demographics, lung function, health status, 6 min walk tests and levels of systemic inflammation were assessed. Students t tests and Mann Whitney-U tests were used. Results One hundred seven (28.9%) of patients were categorised as GOLD B at baseline. These GOLD B patients had similar FEV1 to GOLD A patients (66% predicted). More GOLD B patients were current smokers (p = 0.031), had chronic bronchitis (p = 0.0003) and cardiovascular comorbidities (p = 0.019) compared to GOLD A. At 12 months, 25.3% of GOLD B patients progressed to GOLD D. These patients who progressed (unstable patients) had worse health status and symptoms (SGRQ-C Total, 50.0 v 41.1, p = 0.019 and CAT, 21.0 v 14.0, p = 0.006) and lower FEV1 (60% v 69% p = 0.014) at baseline compared to stable patients who remained in GOLD B. Conclusions Unstable GOLD B patients who progressed to GOLD D had a higher level of symptoms at baseline. A high symptom burden may predict an increased likelihood of disease progression in GOLD B patients. Electronic supplementary material The online version of this article (doi:10.1186/s12890-017-0384-8) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Philip J Lawrence
- Centre for Respiratory Medicine and Allergy, Institute of Inflammation and Repair, Medicines Evaluation Unit, University Hospital of South Manchester Foundation Trust, University of Manchester, Manchester, UK
| | - Umme Kolsum
- Centre for Respiratory Medicine and Allergy, Institute of Inflammation and Repair, Medicines Evaluation Unit, University Hospital of South Manchester Foundation Trust, University of Manchester, Manchester, UK.
| | - Vandana Gupta
- Centre for Respiratory Medicine and Allergy, Institute of Inflammation and Repair, Medicines Evaluation Unit, University Hospital of South Manchester Foundation Trust, University of Manchester, Manchester, UK
| | - Gavin Donaldson
- Airways Disease Section, National Heart and Lung Institute, Imperial College London, London, UK
| | - Richa Singh
- Airways Disease Section, National Heart and Lung Institute, Imperial College London, London, UK
| | - Bethan Barker
- Department of Infection, Immunity and Inflammation, Institute for Lung Health, NIHR Respiratory Biomedical Research, Leicester, UK
| | - Leena George
- Department of Infection, Immunity and Inflammation, Institute for Lung Health, NIHR Respiratory Biomedical Research, Leicester, UK
| | - Adam Webb
- Department of Genetics, University of Leicester, Leicester, UK
| | | | - Christopher Brightling
- Department of Infection, Immunity and Inflammation, Institute for Lung Health, NIHR Respiratory Biomedical Research, Leicester, UK
| | - Jadwiga Wedzicha
- Airways Disease Section, National Heart and Lung Institute, Imperial College London, London, UK
| | - Dave Singh
- Centre for Respiratory Medicine and Allergy, Institute of Inflammation and Repair, Medicines Evaluation Unit, University Hospital of South Manchester Foundation Trust, University of Manchester, Manchester, UK
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Barker B. Federation for Day Services Staff? Br J Occup Ther 2016. [DOI: 10.1177/030802267603901117] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Whitt J, Gibson T, Barker B, Ward A. MULTICENTRIC PERIPHERAL OSSIFYING FIBROMAS: REPORT OF A CASE. Oral Surg Oral Med Oral Pathol Oral Radiol 2016. [DOI: 10.1016/j.oooo.2016.06.072] [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: 11/24/2022]
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Jackson VE, Ntalla I, Sayers I, Morris R, Whincup P, Casas JP, Amuzu A, Choi M, Dale C, Kumari M, Engmann J, Kalsheker N, Chappell S, Guetta-Baranes T, McKeever TM, Palmer CNA, Tavendale R, Holloway JW, Sayer AA, Dennison EM, Cooper C, Bafadhel M, Barker B, Brightling C, Bolton CE, John ME, Parker SG, Moffat MF, Wardlaw AJ, Connolly MJ, Porteous DJ, Smith BH, Padmanabhan S, Hocking L, Stirrups KE, Deloukas P, Strachan DP, Hall IP, Tobin MD, Wain LV. Exome-wide analysis of rare coding variation identifies novel associations with COPD and airflow limitation in MOCS3, IFIT3 and SERPINA12. Thorax 2016; 71:501-9. [PMID: 26917578 PMCID: PMC4893124 DOI: 10.1136/thoraxjnl-2015-207876] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2015] [Accepted: 01/29/2016] [Indexed: 01/01/2023]
Abstract
Background Several regions of the genome have shown to be associated with COPD in genome-wide association studies of common variants. Objective To determine rare and potentially functional single nucleotide polymorphisms (SNPs) associated with the risk of COPD and severity of airflow limitation. Methods 3226 current or former smokers of European ancestry with lung function measures indicative of Global Initiative for Chronic Obstructive Lung Disease (GOLD) 2 COPD or worse were genotyped using an exome array. An analysis of risk of COPD was carried out using ever smoking controls (n=4784). Associations with %predicted FEV1 were tested in cases. We followed-up signals of interest (p<10−5) in independent samples from a subset of the UK Biobank population and also undertook a more powerful discovery study by meta-analysing the exome array data and UK Biobank data for variants represented on both arrays. Results Among the associated variants were two in regions previously unreported for COPD; a low frequency non-synonymous SNP in MOCS3 (rs7269297, pdiscovery=3.08×10−6, preplication=0.019) and a rare SNP in IFIT3, which emerged in the meta-analysis (rs140549288, pmeta=8.56×10−6). In the meta-analysis of % predicted FEV1 in cases, the strongest association was shown for a splice variant in a previously unreported region, SERPINA12 (rs140198372, pmeta=5.72×10−6). We also confirmed previously reported associations with COPD risk at MMP12, HHIP, GPR126 and CHRNA5. No associations in novel regions reached a stringent exome-wide significance threshold (p<3.7×10−7). Conclusions This study identified several associations with the risk of COPD and severity of airflow limitation, including novel regions MOCS3, IFIT3 and SERPINA12, which warrant further study.
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Affiliation(s)
| | - Ioanna Ntalla
- Department of Health Sciences, University of Leicester, Leicester, UK William Harvey Research Institute, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, London, UK
| | - Ian Sayers
- Division of Respiratory Medicine, University of Nottingham, Queen's Medical Centre, Nottingham, UK
| | - Richard Morris
- School of Social & Community Medicine, University of Bristol, Bristol, UK Department of Primary Care & Population Health, UCL, London, UK
| | - Peter Whincup
- Population Health Research Institute, St George's, University of London, London, UK
| | - Juan-Pablo Casas
- University College London, Farr Institute of Health Informatics, London, UK Cochrane Heart Group, London, UK
| | - Antoinette Amuzu
- Department of Non-communicable Disease Epidemiology, Faculty of Epidemiology and Population Health, London School of Hygiene & Tropical Medicine, London, UK
| | - Minkyoung Choi
- Department of Non-communicable Disease Epidemiology, Faculty of Epidemiology and Population Health, London School of Hygiene & Tropical Medicine, London, UK
| | - Caroline Dale
- Department of Non-communicable Disease Epidemiology, Faculty of Epidemiology and Population Health, London School of Hygiene & Tropical Medicine, London, UK
| | - Meena Kumari
- ISER, University of Essex, Colchester, Essex, UK Department of Epidemiology and Public Health, UCL, London, UK
| | | | - Noor Kalsheker
- School of Life Sciences, University of Nottingham, Nottingham, UK
| | - Sally Chappell
- School of Life Sciences, University of Nottingham, Nottingham, UK
| | | | - Tricia M McKeever
- Division of Epidemiology and Public Health, Nottingham City Hospital, University of Nottingham, Nottingham, UK
| | - Colin N A Palmer
- Cardiovascular and Diabetes Medicine, School of Medicine, University of Dundee, Dundee, UK
| | - Roger Tavendale
- Cardiovascular and Diabetes Medicine, School of Medicine, University of Dundee, Dundee, UK
| | - John W Holloway
- Human Development & Health, Faculty of Medicine, University of Southampton, Southampton General Hospital, Southampton, UK NIHR Southampton Respiratory Biomedical Research Unit, University of Southampton and University Hospital Southampton NHS Foundation Trust, Southampton General Hospital, Southampton, UK
| | - Avan A Sayer
- MRC Lifecourse Epidemiology Unit, University of Southampton, Southampton General Hospital, Southampton, UK NIHR Southampton Biomedical Research Centre, University of Southampton and University Hospital Southampton NHS Foundation Trust, Southampton General Hospital, Southampton, UK
| | - Elaine M Dennison
- MRC Lifecourse Epidemiology Unit, University of Southampton, Southampton General Hospital, Southampton, UK Victoria University, Wellington, New Zealand
| | - Cyrus Cooper
- MRC Lifecourse Epidemiology Unit, University of Southampton, Southampton General Hospital, Southampton, UK NIHR Southampton Biomedical Research Centre, University of Southampton and University Hospital Southampton NHS Foundation Trust, Southampton General Hospital, Southampton, UK
| | - Mona Bafadhel
- Respiratory Medicine Unit, Nuffield Department of Medicine, University of Oxford, Oxford, UK
| | - Bethan Barker
- Institute for Lung Health, Department of Infection, Immunity and Inflammation, University of Leicester, Leicester, UK National Institute for Health Research Respiratory Biomedical Research Unit, Glenfield Hospital, Leicester, UK
| | - Chris Brightling
- Institute for Lung Health, Department of Infection, Immunity and Inflammation, University of Leicester, Leicester, UK National Institute for Health Research Respiratory Biomedical Research Unit, Glenfield Hospital, Leicester, UK
| | - Charlotte E Bolton
- Nottingham Respiratory Research Unit, University of Nottingham, City Hospital Campus, Nottingham, UK
| | - Michelle E John
- Nottingham Respiratory Research Unit, University of Nottingham, City Hospital Campus, Nottingham, UK
| | - Stuart G Parker
- Institute for Ageing and Health, Newcastle University, Campus for Ageing and Vitality, Newcastle upon Tyne, UK
| | - Miriam F Moffat
- Department of Molecular Genetics and Genomics, National Heart and Lung Institute, Imperial College London, London, UK
| | - Andrew J Wardlaw
- Institute for Lung Health, Department of Infection, Immunity and Inflammation, University of Leicester, Leicester, UK National Institute for Health Research Respiratory Biomedical Research Unit, Glenfield Hospital, Leicester, UK
| | - Martin J Connolly
- Freemasons' Department of Geriatric Medicine, University of Auckland, New Zealand
| | - David J Porteous
- Generation Scotland, Centre for Genomic and Experimental Medicine, Institute of Genetics and Molecular Medicine, University of Edinburgh, Edinburgh, UK
| | - Blair H Smith
- Division of Population Health Sciences, University of Dundee, Dundee, UK
| | - Sandosh Padmanabhan
- Institute of Cardiovascular and Medical Sciences, University of Glasgow, Glasgow, UK
| | - Lynne Hocking
- Institute of Medical Sciences, University of Aberdeen, Aberdeen, UK
| | - Kathleen E Stirrups
- William Harvey Research Institute, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, London, UK Department of Haematology, University of Cambridge, Cambridge, UK
| | - Panos Deloukas
- William Harvey Research Institute, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, London, UK Princess Al-Jawhara Al-Brahim Centre of Excellence in Research of Hereditary Disorders, King Abdulaziz University, Jeddah, Saudi Arabia
| | - David P Strachan
- Population Health Research Institute, St George's, University of London, London, UK
| | - Ian P Hall
- Division of Respiratory Medicine, University of Nottingham, Queen's Medical Centre, Nottingham, UK
| | - Martin D Tobin
- Department of Health Sciences, University of Leicester, Leicester, UK National Institute for Health Research Respiratory Biomedical Research Unit, Glenfield Hospital, Leicester, UK
| | - Louise V Wain
- Department of Health Sciences, University of Leicester, Leicester, UK
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Barker B, Alfred GT, Fleming K, Nguyen P, Wood E, Kerr T, DeBeck K. Aboriginal street-involved youth experience elevated risk of incarceration. Public Health 2015; 129:1662-8. [PMID: 26390949 DOI: 10.1016/j.puhe.2015.08.003] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [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: 12/15/2014] [Revised: 07/29/2015] [Accepted: 08/06/2015] [Indexed: 11/30/2022]
Abstract
OBJECTIVES Past research has identified risk factors associated with incarceration among adult Aboriginal populations; however, less is known about incarceration among street-involved Aboriginal youth. Therefore, we undertook this study to longitudinally investigate recent reports of incarceration among a prospective cohort of street-involved youth in Vancouver, Canada. STUDY DESIGN Prospective cohort study. METHODS Data were collected from a cohort of street-involved, drug-using youth from September 2005 to May 2013. Multivariate generalized estimating equation analyses were employed to examine the potential relationship between Aboriginal ancestry and recent incarceration. RESULTS Among our sample of 1050 youth, 248 (24%) reported being of aboriginal ancestry, and 378 (36%) reported being incarcerated in the previous six months at some point during the study period. In multivariate analysis controlling for a range of potential confounders including drug use patterns and other risk factors, Aboriginal ancestry remained significantly associated with recent incarceration (adjusted odds ratio [AOR] = 1.44; 95% confidence interval [CI]: 1.12-1.86). CONCLUSIONS Even after adjusting for drug use patterns and other risk factors associated with incarceration, this study found that Aboriginal street-involved youth were still significantly more likely to be incarcerated than their non-Aboriginal peers. Given the established harms associated with incarceration these findings underscore the pressing need for systematic reform including culturally appropriate interventions to prevent Aboriginal youth from becoming involved with the criminal justice system.
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Affiliation(s)
- B Barker
- Urban Health Research Initiative, British Columbia Centre for Excellence in HIV/AIDS, Canada; Interdisciplinary Studies Graduate Program, University of British Columbia, Canada
| | - G T Alfred
- Indigenous Governance Program, University of Victoria, Canada
| | - K Fleming
- Urban Health Research Initiative, British Columbia Centre for Excellence in HIV/AIDS, Canada
| | - P Nguyen
- Urban Health Research Initiative, British Columbia Centre for Excellence in HIV/AIDS, Canada
| | - E Wood
- Urban Health Research Initiative, British Columbia Centre for Excellence in HIV/AIDS, Canada; Division of AIDS, Department of Medicine, University of British Columbia, Canada
| | - T Kerr
- Urban Health Research Initiative, British Columbia Centre for Excellence in HIV/AIDS, Canada; Division of AIDS, Department of Medicine, University of British Columbia, Canada
| | - K DeBeck
- Urban Health Research Initiative, British Columbia Centre for Excellence in HIV/AIDS, Canada; School of Public Policy, Simon Fraser University, Canada.
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12
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Bafadhel M, Haldar K, Barker B, Patel H, Mistry V, Barer MR, Pavord ID, Brightling CE. Airway bacteria measured by quantitative polymerase chain reaction and culture in patients with stable COPD: relationship with neutrophilic airway inflammation, exacerbation frequency, and lung function. Int J Chron Obstruct Pulmon Dis 2015; 10:1075-83. [PMID: 26089657 PMCID: PMC4468933 DOI: 10.2147/copd.s80091] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.9] [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] [Indexed: 11/23/2022] Open
Abstract
BACKGROUND Potentially pathogenic microorganisms can be detected by quantitative real-time polymerase chain reaction (qPCR) in sputum from patients with COPD, although how this technique relates to culture and clinical measures of disease is unclear. We used cross-sectional and longitudinal data to test the hypotheses that qPCR is a more sensitive measure of bacterial presence and is associated with neutrophilic airway inflammation and adverse clinical outcomes. METHODS Sputum was collected from 174 stable COPD subjects longitudinally over 12 months. Microbial sampling using culture and qPCR was performed. Spirometry and sputum measures of airway inflammation were assessed. FINDINGS Sputum was qPCR-positive (>10(6) copies/mL) in 77/152 samples (Haemophilus influenzae [n=52], Moraxella catarrhalis [n=24], Streptococcus pneumoniae [n=19], and Staphylococcus aureus [n=7]). Sputum was culture-positive in 50/174 samples, with 49 out of 50 culture-positive samples having pathogen-specific qPCR bacterial loads >10(6) copies/mL. Samples that had qPCR copy numbers >10(6)/mL, whether culture-positive or not, had increased sputum neutrophil counts. H. influenzae qPCR copy numbers correlated with sputum neutrophil counts (r=0.37, P<0.001), were repeatable within subjects, and were >10(6)/mL three or more times in 19 patients, eight of whom were repeatedly sputum culture-positive. Persistence, whether defined by culture, qPCR, or both, was associated with a higher sputum neutrophil count, lower forced expiratory volume in 1 second (FEV1), and worsened quality of life. INTERPRETATION qPCR identifies a significant number of patients with potentially bacteria-associated neutrophilic airway inflammation and disease that are not identified by traditional culture-based methods.
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Affiliation(s)
- Mona Bafadhel
- Respiratory Medicine Unit, Nuffield Department of Clinical Medicine, University of Oxford, Oxford, UK
| | - Koirobi Haldar
- Department of Infection, Immunity and Inflammation, University of Leicester, Leicester, UK
| | - Bethan Barker
- Department of Infection, Immunity and Inflammation, University of Leicester, Leicester, UK ; Institute for Lung Health, National Institute for Health Research Respiratory Biomedical Research Unit, Glenfield Hospital, University of Leicester, Leicester, UK
| | - Hemu Patel
- Department of Clinical Microbiology, University Hospitals of Leicester NHS Trust, Leicester, UK
| | - Vijay Mistry
- Department of Infection, Immunity and Inflammation, University of Leicester, Leicester, UK ; Institute for Lung Health, National Institute for Health Research Respiratory Biomedical Research Unit, Glenfield Hospital, University of Leicester, Leicester, UK
| | - Michael R Barer
- Department of Infection, Immunity and Inflammation, University of Leicester, Leicester, UK ; Institute for Lung Health, National Institute for Health Research Respiratory Biomedical Research Unit, Glenfield Hospital, University of Leicester, Leicester, UK ; Department of Clinical Microbiology, University Hospitals of Leicester NHS Trust, Leicester, UK
| | - Ian D Pavord
- Respiratory Medicine Unit, Nuffield Department of Clinical Medicine, University of Oxford, Oxford, UK
| | - Christopher E Brightling
- Department of Infection, Immunity and Inflammation, University of Leicester, Leicester, UK ; Institute for Lung Health, National Institute for Health Research Respiratory Biomedical Research Unit, Glenfield Hospital, University of Leicester, Leicester, UK
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Eltboli O, Mistry V, Barker B, Brightling CE. Relationship between blood and bronchial submucosal eosinophilia and reticular basement membrane thickening in chronic obstructive pulmonary disease. Respirology 2015; 20:667-70. [PMID: 25645275 PMCID: PMC4833195 DOI: 10.1111/resp.12475] [Citation(s) in RCA: 60] [Impact Index Per Article: 6.7] [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: 06/04/2014] [Revised: 09/14/2014] [Accepted: 11/29/2014] [Indexed: 11/28/2022]
Abstract
A sputum eosinophilia is observed in 10–40% of COPD subjects. The blood eosinophil count is a biomarker of sputum eosinophilia, but whether it is associated with bronchial submucosal eosinophils is unclear. In 20 COPD subjects and 21 controls we assessed the number of bronchial submucosal eosinophils and reticular basement membrane thickening and found these were positively correlated with the blood eosinophil percentage. In COPD, blood eosinophils are a good biomarker of bronchial eosinophilia and remodelling.
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Affiliation(s)
- Osama Eltboli
- Institute for Lung Health, Department of Infection, Immunity & Inflammation, University of Leicester, Leicester, UK; Department of Medicine, Faculty of Medicine, Benghazi University, Benghazi, Libya
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Wright AKA, Mistry V, Richardson M, Shelley M, Thornton T, Terry S, Barker B, Bafadhel M, Brightling C. Toll-like receptor 9 dependent interferon-α release is impaired in severe asthma but is not associated with exacerbation frequency. Immunobiology 2015; 220:859-64. [PMID: 25662572 DOI: 10.1016/j.imbio.2015.01.005] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2014] [Revised: 01/15/2015] [Accepted: 01/15/2015] [Indexed: 10/24/2022]
Abstract
Patients with asthma and chronic obstructive pulmonary disease (COPD) are susceptible to exacerbations, often caused by microbial pathogens. We hypothesised that intracellular Toll-like receptor (TLR) function in blood mononuclear cells (PBMCs) from these subjects would be impaired and that this impairment is related to exacerbation frequency. PBMCs stimulated with a TLR-9 agonist (but not TLR-3 or 7/8) produced significantly less IFN-α in asthma (26 [3-696]pg/ml) compared to control (943 [164-1651]) and COPD (597 [127-1186]) subjects (p = 0.0019) but this was not related to the number of exacerbations per year in asthma or COPD. In COPD, IFN-α levels were related to KCO (% predicted) in COPD (r = -0.41, p = 0.01). IFN-α was derived from plasmacytoid dendritic cells (pDCs) and their frequency was lower in asthma compared to control subjects (control 0.48% [0.33-0.64] versus asthma 0.29% [0.13-0.34], p = 0.019) whereas pDC function per se was not significantly impaired between groups. The mechanism underlying reduced IFN-α production and the clinical consequences in severe asthma remains to be established.
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Affiliation(s)
- Adam K A Wright
- Institute of Lung Health, Respiratory Biomedical Unit, University Hospitals of Leicester NHS Trust, Leicestershire, UK.
| | - Vijay Mistry
- Department of Infection, Immunity and Inflammation, University of Leicester, Leicester, UK
| | - Matthew Richardson
- Institute of Lung Health, Respiratory Biomedical Unit, University Hospitals of Leicester NHS Trust, Leicestershire, UK
| | - Maria Shelley
- Institute of Lung Health, Respiratory Biomedical Unit, University Hospitals of Leicester NHS Trust, Leicestershire, UK
| | - Tracy Thornton
- Institute of Lung Health, Respiratory Biomedical Unit, University Hospitals of Leicester NHS Trust, Leicestershire, UK
| | - Sarah Terry
- Institute of Lung Health, Respiratory Biomedical Unit, University Hospitals of Leicester NHS Trust, Leicestershire, UK
| | - Bethan Barker
- Department of Infection, Immunity and Inflammation, University of Leicester, Leicester, UK
| | - Mona Bafadhel
- Department of Respiratory Medicine, Nuffield Department of Clinical Medicine, University of Oxford, Old Road Campus, Oxford, UK
| | - Chris Brightling
- Institute of Lung Health, Respiratory Biomedical Unit, University Hospitals of Leicester NHS Trust, Leicestershire, UK; Department of Infection, Immunity and Inflammation, University of Leicester, Leicester, UK
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15
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Whitt J, Barker B, Gibson T, Dunlap C, Thompson R. Odontoameloblastoma: report of a case with 17 year follow-up. Oral Surg Oral Med Oral Pathol Oral Radiol 2014. [DOI: 10.1016/j.oooo.2014.05.073] [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: 10/24/2022]
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16
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Pagano E, Verde G, Minniti T, Danielewicz P, Barker B. Proton-proton femtoscopy and access to dynamical sources at intermediate energies. EPJ Web of Conferences 2014. [DOI: 10.1051/epjconf/20146603068] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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17
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Ejiofor S, Brebner J, Barker B, Mansur A. P156 Outcome and Experience of Laproscopic Nissens Fundoplication in Adult Patients with Severe Asthma and Cough Who Have Gastroesophageal Reflux: Abstract P156 Table 1. Thorax 2012. [DOI: 10.1136/thoraxjnl-2012-202678.217] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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18
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Roque P, Barker B, Gridley D, Stapczynski J, LoVecchio F. 213 Use of Radiographic Parameters for Distal Radius Fracture Reduction Analysis. Ann Emerg Med 2011. [DOI: 10.1016/j.annemergmed.2011.06.242] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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19
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Nash EF, Thomas A, Whitmill R, Rashid R, Barker B, Rayner RJ, Whitehouse JL, Honeybourne D. "Cepacia syndrome" associated with Burkholderia cepacia (Genomovar I) infection in an adolescent with cystic fibrosis. Pediatr Pulmonol 2011; 46:512-4. [PMID: 21194170 DOI: 10.1002/ppul.21404] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Edward F Nash
- West Midlands Adult Cystic Fibrosis Centre, Birmingham Heartlands Hospital, Bordesley Green East, Birmingham, UK.
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20
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Affiliation(s)
- Bethan Barker
- Department of Respiratory Medicine, Birmingham Heartlands Hospital, Bordesley Green East, Birmingham B9 5SS, UK.
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21
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Nash EF, Whitmill R, Barker B, Rashid R, Whitehouse JL, Honeybourne D. Clinical outcomes of pandemic (H1N1) 2009 influenza (swine flu) in adults with cystic fibrosis. Thorax 2010; 66:259. [PMID: 20820065 DOI: 10.1136/thx.2010.140822] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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22
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Whitmill R, Barker B, Nash E, Whitehouse J, Honeybourne D. The experience of managing Mycobacterium abscessus in adults with cystic fibrosis in a large regional adult CF centre. J Cyst Fibros 2010. [DOI: 10.1016/s1569-1993(10)60131-2] [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: 10/19/2022]
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23
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Barker B, Macfarlane J, Lim WS, Douglas G, Macfarlane J. Local guidelines for management of adult community acquired pneumonia: a survey of UK hospitals. Thorax 2009; 64:181. [DOI: 10.1136/thx.2007.095216] [Citation(s) in RCA: 3] [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: 11/04/2022]
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24
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Gruber A, Smith R, Barker B, Sithole J, Thomson GA, Idris I. Serum urea and total cholesterol independently predict re-hospitalisation with a cardiac-related event following an acute ST-elevation myocardial infarction. Eur J Intern Med 2007; 18:531-4. [PMID: 17967334 DOI: 10.1016/j.ejim.2007.02.032] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/25/2006] [Revised: 02/09/2007] [Accepted: 02/22/2007] [Indexed: 10/23/2022]
Abstract
BACKGROUND Although elevated serum urea and low serum sodium have been shown to be associated with increased short-term (30-day) mortality following an ST-elevation myocardial infarction (STEMI), little is known about the role of these biochemical markers as predictors of intermediate-term (1-year) re-hospitalisation. METHODS Case notes of 90 consecutively admitted patients discharged with a primary diagnosis of an STEMI were retrospectively investigated. Baseline parameters were recorded and patients' clinical course following hospital discharge was carefully reviewed up to 1-year post-STEMI. Multivariate logistic regression analysis was performed to determine the independent association between baseline parameters and 1-year re-hospitalisation. RESULTS The mean age of the patients was 62.8+/-1.38 years. Thirty patients (33.3%) were re-hospitalised for cardiac-related events and three patients (3.3%) died within 1 year of index STEMI. Using stepwise regression analysis, after adjusting for all independent variables, admission total cholesterol (p=0.013) and urea (p=0.04) were found to be the only significant independent predictors of re-hospitalisation or death. Admission serum sodium was non-significant (p=0.065), but only just. For each mmol/L increase in total cholesterol, a patient was 2.18 times more likely to be re-hospitalised, while for each mmol/L increase in serum urea, a patient was 1.32 times more likely to be re-hospitalised or die. When data were categorised based on high urea (> 7 mmol/L), high total cholesterol (> 5.0 mmol/L) and low sodium (< 135 mmol/L) at admission, none of these variables showed any significant increased risk of re-hospitalisation or death. This suggests that these biochemical parameters were continuously associated with risk of re-hospitalisation through the whole range of serum concentrations. CONCLUSION In this retrospective study, independent predictors of 1-year re-hospitalisation following an STEMI include high serum urea, raised cholesterol levels and, possibly, reduced sodium levels. These simple biomarkers can be included in patients' risk stratification when following post-STEMI patients in out-patient clinics.
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Affiliation(s)
- A Gruber
- Sherwood Forest Hospitals NHS Trust, Nottinghamshire, UK
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Kirby J, Barker B, Fernando DJS, Jose M, Curtis C, Goodchild A, Dickens C, Olla E, Cooke R, Idris I, Thomson GA. A prospective case control study of the benefits of electronic discharge summaries. J Telemed Telecare 2007; 12 Suppl 1:20-1. [PMID: 16884568 DOI: 10.1258/135763306777978605] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
A system of electronic discharge summaries was developed. It replaced conventional discharge prescriptions and dictated discharge summaries. We conducted a prospective case-control study of 102 consecutive patients admitted to our hospital under the care of one consultant physician. Patients discharged after 1 December 2004 were discharged using the new computerised system (50 patients) while patients admitted under the same medical team, but to another ward were discharged using the conventional paper discharge system (52 patients). Patients in the electronic group and the conventional group were similar in age (mean 67 years versus 58 years, P>0.05) and duration of hospital stay (6 days versus 1 day, P>0.05). The mean time taken to produce an electronic discharge summary was immediate (0 days) which was significantly (P<0.0001) less than the mean time taken to produce a conventional discharge summary (80 days). Combining electronic discharge prescriptions with electronic summaries appears promising and merits further study.
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Affiliation(s)
- Jane Kirby
- Department of Diabetes, Pharmacy and IT, Kings Mill Hospital, Nottinghamshire, UK
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26
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Barker B, Garcia F, Lozevski J, Warner J, Hatch K. The correlation between colposcopically directed cervical biopsy and loop electrosurgical excision procedure pathology and the effect of time on that agreement. Gynecol Oncol 2001; 82:22-6. [PMID: 11426957 DOI: 10.1006/gyno.2001.6245] [Citation(s) in RCA: 31] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
OBJECTIVE The goal of this study was to evaluate whether colposcopically directed cervical biopsy accurately predicts histopathology found on loop electrosurgical excision procedure specimen and to assess whether this correlation was affected by a delay in treatment of greater than 12 weeks. METHODS A retrospective review was performed of all cervical biopsy and loop electrosurgical excision procedure pairs performed at University of Arizona Medical Center between March 1992 and March 2000. Agreement was assessed by kappa statistics and Spearman rho coefficients. A subgroup analysis was performed to assess the effect of a delay greater than 12 weeks between cervical biopsy and loop excision on the histopathologic correlation. RESULTS An 84% agreement was found between cervical biopsy histopathology and loop electrosurgical excision procedure histopathology when compared to within 1 degree (kappa = 0.78, P < 0.0001; Spearman rho = 0.40, P < 0.0001). This agreement remained strong (87%) even when loop electrosurgical excision procedure was delayed greater than 12 weeks (kappa = 0.81, P = 0.01). CONCLUSION Colposcopically directed cervical biopsy correlated strongly with loop specimen histopathology. A delay in loop electrosurgical excision procedure greater than 12 weeks does not negatively affect this correlation. This delay of 12 weeks may be used safely in the future to test chemotherapeutic dysplasia treatments.
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Affiliation(s)
- B Barker
- Department of Obstetrics and Gynecology, University of Arizona Health Sciences Center, University Medical Center, 1501 North Campbell Avenue, Tucson, Arizona, 85724-5078, USA.
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Goldhaber P, Greenspan JS, Bowen WH, Genco RJ, Barker B, Greene JC, Allukian M, McCallum CA, Slavkin H. The growing family of NIH institutes. Science 2001; 292:1835-6. [PMID: 11398827] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/20/2023]
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28
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Garcia FA, Barker B, Myloyde T, Blumenthal P, Huggins GR. The Filshie clip for laparoscopic adnexal surgery. JSLS 2001; 5:179-81. [PMID: 11394433 PMCID: PMC3015424] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
Abstract
BACKGROUND Gynecologic endoscopic procedures are increasingly common and require the ability to control large vascular structures. METHOD The Filshie clip is a silicone-lined, titanium occlusive device, originally designed and Food and Drug Administration (FDA) approved for surgical contraception. This device also has the potential for occluding vascular structures during laparoscopic surgery. EXPERIENCE AND RESULTS We describe a salpingectomy, an excision of bilateral hydrosalpinges, and a salpingo-oopherectomy. We performed all procedures laparoscopically using this device as the primary modality for assuring hemostasis. CONCLUSION The Filshie clip is a useful and economical device for assuring hemostasis during gynecologic endoscopic surgery.
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Affiliation(s)
- F A Garcia
- Department of Obstetrics and Gynecology, University of Arizona Health Sciences Center, Tucson 85724, USA.
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Garcia FA, Barker B, Myloyde T, Blumenthal P. The Filshie clip in nonsterilization gynecologic laparoscopy. Obstet Gynecol 2000; 96:848. [PMID: 11094240 DOI: 10.1016/s0029-7844(00)00925-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Affiliation(s)
- F A Garcia
- Department of Obstetrics & Gynecology, the University of Arizona Health Sciences Center, Tucson, Arizona, USA
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Garcia FA, Steinmetz I, Barker B, Huggins GR. Economic and clinical outcomes of microlaparoscopic and standard laparoscopic sterilization. A comparison. J Reprod Med 2000; 45:372-6. [PMID: 10845168] [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: 02/16/2023]
Abstract
OBJECTIVE To compare micro-laparoscopic surgical sterilization and standard laparoscopic sterilization with respect to cost effectiveness and patient preferences. STUDY DESIGN A retrospective study of all laparoscopic surgical sterilizations performed under general anesthesia at Johns Hopkins Bayview Medical Center--16 micro-laparoscopies and 34 standard laparoscopies. Cases selected for review were limited to patients undergoing surgical contraception and not requiring additional, concurrent procedures. Laparoscopic surgical sterilization was performed using a double-puncture technique with silicone band application. In each case either a standard, 10-mm laparoscope or a 2-mm micro-laparoscope was used, and the procedure was performed under general anesthesia. Postoperative pain management was achieved by nonsteroidal antiinflammatory drugs and/or narcotic analgesia. All cases were performed by residents under faculty supervision. Medical records and hospital billing records were reviewed, and a standardized telephone interview was conducted to assess postoperative quality of life and patient satisfaction. RESULTS Both techniques were comparable in cost effectiveness. There was no significant difference in operating room time, average operating room costs, average ancillary department costs, instrument and supply costs, or length of stay. Postoperative discomfort was significantly less with microlaparoscopy (P = .05), and patient satisfaction was higher in the microlaparoscopy group. CONCLUSION Microlaparoscopy and the standard laparoscopic approach for surgical sterilization are associated with similar hospital charges. Postoperative pain and overall patient satisfaction were significantly better with microlaparoscopy than standard laparoscopy.
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Affiliation(s)
- F A Garcia
- Department of Obstetrics and Gynecology, University of Arizona, Tucson 85724-5078, USA
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Pleydell E, Wood J, Barker B. Equine viral arteritis in a gelding in the UK. Vet Rec 1999; 145:54. [PMID: 10458581] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/13/2023]
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Hodes ME, Zimmerman AW, Aydanian A, Naidu S, Miller NR, Garcia Oller JL, Barker B, Aleck KA, Hurley TD, Dlouhy SR. Different mutations in the same codon of the proteolipid protein gene, PLP, may help in correlating genotype with phenotype in Pelizaeus-Merzbacher disease/X-linked spastic paraplegia (PMD/SPG2). Am J Med Genet 1999; 82:132-9. [PMID: 9934976 DOI: 10.1002/(sici)1096-8628(19990115)82:2<132::aid-ajmg6>3.0.co;2-4] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Pelizaeus-Merzbacher disease/X-linked spastic paraplegia (PMD/SPG2) comprises a spectrum of diseases that range from severe to quite mild. The reasons for the variation in severity are not obvious, but suggested explanations include the extent of disruption of the transmembrane portion of the proteolipid protein caused by certain amino acid substitutions and interference with the trafficking of the PLP molecule in oligodendrocytes. Four codons in which substitution of more than one amino acid has occurred are available for examination of clinical and potential structural manifestations: Valine165 to either glutamate or glycine, leucine 045 to either proline or arginine, aspartate 202 to asparagine or histidine, and leucine 223 to isoleucine or proline. Three of these mutations, Val165Gly, Leu045Pro, and Leu223Ile have not been described previously in humans. The altered amino acids appear in the A-B loop, C helix, and C-D loop, respectively. We describe clinically patients with the mutations T494G (Val165Gly), T134C (Leu045Pro), and C667A (Leu223Ile). We discuss also the previously reported mutations Asp202Asn and Asp202His. We have calculated the changes in hydrophobicity of short sequences surrounding some of these amino acids and compared the probable results of the changes in transmembrane structure of the proteolipid protein for the various mutations with the clinical data available on the patients. While the Val165Glu mutation, which is expected to produce disruption of a transmembrane loop of the protein, produces more severe disease than does Val165Gly, no particular correlation with hydrophobicity is found for the other mutations. As these are not in transmembrane domains, other factors such as intracellular transport or interaction between protein chains during myelin formation are probably at work.
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Affiliation(s)
- M E Hodes
- Department of Medical and Molecular Genetics, Indiana University School of Medicine, Indianapolis 46202-5251, USA.
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Abstract
Ivermectin, an antiparasitic agent, was successfully used as a sole agent to combat endemic scabies in a closed 33-bed ward of a rural nursing home. Previous topical therapies, including multiple applications of permethrin, gamma-benzene hexachloride, benzyl benzoate and precipitated sulfur in white soft paraffin, had failed. Several patients exhibited hyperkeratotic crusted scabies with head and neck involvement and all residents except one recently arrived resident had evidence of active infestation. All residents were treated with 200 micrograms/kg of ivermectin and this dose was repeated 2 weeks later in all subjects. Four weeks after the first dose of ivermectin there was no evidence of active scabies and all rashes were totally resolved by 6 weeks. The action of ivermectin, its safety and its indications are discussed.
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Affiliation(s)
- J R Sullivan
- Department of Dermatology, Royal Newcastle Hospital, New South Wales, Australia
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Taskin M, Barker B, Calanog A, Jormark S. Syndrome of inappropriate antidiuresis in ovarian serous carcinoma with neuroendocrine differentiation. Gynecol Oncol 1996; 62:400-4. [PMID: 8812540 DOI: 10.1006/gyno.1996.0256] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
A 58-year-old postmenopausal woman with primary ovarian serous carcinoma presented with the syndrome of inappropriate antidiuresis (SIAD). Preoperative workup showed serum sodium level of 110 mEq/liter and antidiuretic hormone level of 3.3 pg/ml. The serum and urine osmolarity were 239 and 371, respectively. Antidiuretic hormone was demonstrated in tumor cells by immunohistochemistry. To the best of the authors' knowledge, this represents the first case of SIAD due to primary ovarian tumor.
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Affiliation(s)
- M Taskin
- Department of Pathology, Lenox Hill Hospital, New York, New York, USA
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Crawford F, Scibelli P, Duara R, Barker B, Fallin D, Gold M, Hoyne J, Sevush S, Mullan M. 500 Familial and population based studies of APOE and APOCI in AD. Neurobiol Aging 1996. [DOI: 10.1016/s0197-4580(96)80502-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Barker G, Barker B. Helping your patients remain tobacco-free for life. Dentistry 1993; 13:4-7. [PMID: 9485722] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- G Barker
- Department of Oral Diagnosis, University of Missouri-Kansas City School of Dentistry, USA
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Kruse-Plass M, ApSimon H, Barker B. A modelling study of the effect of ammonia on in-cloud oxidation and deposition of sulphur. ACTA ACUST UNITED AC 1993. [DOI: 10.1016/0960-1686(93)90353-z] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Archer BT, Fleckenstein JL, Bertocci LA, Haller RG, Barker B, Parkey RW, Peshock RM. Effect of perfusion on exercised muscle: MR imaging evaluation. J Magn Reson Imaging 1992; 2:407-13. [PMID: 1633393 DOI: 10.1002/jmri.1880020409] [Citation(s) in RCA: 56] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
An ischemic clamp model of exercise was used to evaluate the potential role of blood flow in mediating changes in the magnetic resonance imaging appearance of skeletal muscle. Proton relaxation times of muscle were serially estimated in 10 healthy subjects (a) before exercise, (b) after exercise in the presence of vascular occlusion (VO1), (c) during vascular reocclusion after 1 minute of reperfusion (VO2), and (d) after reinstitution of continuous flow. T1 and T2 of active muscles were increased during VO1. During VO2, there were additional increases in relaxation times of active muscles. Reinstitution of continuous flow was associated with a continuous decrease in the T2 of exercised muscle. Hence, blood flow was not required for increases in T1 and T2 with exercise. Additional relaxation time increases occurred after a brief period of reperfusion; however, continuous flow was associated with a decrease in T2.
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Affiliation(s)
- B T Archer
- Department of Radiology, University of Texas Southwestern Medical Center, Dallas 75235-8896
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Barker G, Loftus L, Cuddy P, Barker B. The effects of sucralfate suspension and diphenhydramine syrup plus kaolin-pectin on radiotherapy-induced mucositis. Oral Surg Oral Med Oral Pathol 1991; 71:288-93. [PMID: 1707149 DOI: 10.1016/0030-4220(91)90301-r] [Citation(s) in RCA: 56] [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] [Indexed: 12/28/2022]
Abstract
A prospective, double-blind study compared the effectiveness of sucralfate suspension with diphenhydramine syrup plus kaolin-pectin in reducing severity and pain of radiation-induced oropharyngeal mucositis. Fourteen patients who received at least 4600 cGy to the oral cavity used one of the mouth rinses four times a day, beginning at 1600 cGy. Data were collected on daily perceived pain and helpfulness of mouth rinse, weekly mucositis grade, weight change, and interruption of therapy. Analysis of data revealed no statistically significant differences between the two groups in any parameter. A retrospective review of 15 patients who had received at least 4600 cGy radiation to the oropharynx but had not used a daily mouth-coating rinse, was compared with the study group. Comparison of the two groups suggested that consistent daily oral hygiene and use of a mouth-coating agent will result in less pain and may reduce weight loss and interruption of radiation because of severe mucositis.
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Affiliation(s)
- G Barker
- School of Dentistry, University of Missouri--Kansas City 64108-2795
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Parsons RJ, Howard MJ, Barker B, Peterson LA. Case mix management: rationale, implementation, and administration. J Hosp Mark 1990; 6:163-74. [PMID: 10116633] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/11/2023]
Affiliation(s)
- R J Parsons
- Marriott School of Management, Brigham Young University, Provo, UT
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Abstract
Noonan syndrome is characterized by short stature, unusual facies, congenital heart disease, chest deformity, mild mental retardation, and cryptorchidism in males. It may be sporadic or inherited as an autosomal dominant trait and occurs between 1 in 1000 and 1 in 2500 live births. Cherubism is a giant cell lesion of the jaws thought to be transmitted as an autosomal dominant trait. It is usually recognized by age 7 years, follows a variable course, and is not known to be related to other genetic disorders. We herein report on four patients with Noonan syndrome, all of whom had cherubism. Two other probable cases are cited in the literature for a total of six known cases.
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Affiliation(s)
- C Dunlap
- Department of Oral Pathology, University of Missouri, School of Dentistry, Kansas City
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Barker B, Murtagh J. Angina. Aust Fam Physician 1987; 16:957. [PMID: 3662962] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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Barker B, Murtagh J. Rheumatoid arthritis. Aust Fam Physician 1987; 16:812. [PMID: 3675334] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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Barker B. Diverticular disease. Aust Fam Physician 1987; 16:420. [PMID: 3593110] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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McClure D, Barker G, Barker B, Feil P. Oral management of the cancer patient, part II: Oral complications of radiation therapy. Compendium 1987; 8:88, 90-2. [PMID: 2951010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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Carson NE, Barker B. A desk top system. Aust Fam Physician 1987; 16:48. [PMID: 3827741] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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McClure D, Barker G, Barker B, Feil P. Oral management of the cancer patient, part I: Oral complications of chemotherapy. Compendium 1987; 8:41-3, 46-7, 50. [PMID: 2948648] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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Abstract
Three hundred twenty-two vertebral fractures in multiply injured patients are reviewed. Associated general trauma was usually found to be regionalized to the same area of the body as the spinal injury. The exceptions were pelvic and sacral fractures, which were associated with more diffuse organ injury and multiple vertebral fractures.
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Barker B. Infectious hepatitis. Aust Fam Physician 1986; 15:1082. [PMID: 3767737] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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Barker B, Bloch T, Vakili ST, Waller BF. One pathologist went to mow, went to mow a meadow... JAMA 1986; 255:200. [PMID: 3941498] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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