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Parejo M, Talenti A, Richardson M, Vignal A, Barnett M, Wragg D. AmelHap: Leveraging drone whole-genome sequence data to create a honey bee HapMap. Sci Data 2023; 10:198. [PMID: 37037860 PMCID: PMC10086014 DOI: 10.1038/s41597-023-02097-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2022] [Accepted: 03/22/2023] [Indexed: 04/12/2023] Open
Abstract
Honey bee, Apis mellifera, drones are typically haploid, developing from an unfertilized egg, inheriting only their queen's alleles and none from the many drones she mated with. Thus the ordered combination or 'phase' of alleles is known, making drones a valuable haplotype resource. We collated whole-genome sequence data for 1,407 drones, including 45 newly sequenced Scottish drones, collectively representing 19 countries, 8 subspecies and various hybrids. Following alignment to Amel_HAv3.1, variant calling and quality filtering, we retained 17.4 M high quality variants across 1,328 samples with a genotyping rate of 98.7%. We demonstrate the utility of this haplotype resource, AmelHap, for genotype imputation, returning >95% concordance when up to 61% of data is missing in haploids and up to 12% of data is missing in diploids. AmelHap will serve as a useful resource for the community for imputation from low-depth sequencing or SNP chip data, accurate phasing of diploids for association studies, and as a comprehensive reference panel for population genetic and evolutionary analyses.
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Affiliation(s)
- M Parejo
- Applied Genomics and Bioinformatics, University of the Basque Country (UPV/EHU), Leioa, Spain
| | - A Talenti
- The Roslin Institute, University of Edinburgh, Easter Bush Campus, Midlothian, UK
| | - M Richardson
- University of Edinburgh, King's Buildings Campus, Edinburgh, UK
- Beebytes Analytics CIC, Roslin Innovation Centre, Easter Bush Campus, Midlothian, UK
| | - A Vignal
- GenPhySE, Université de Toulouse, INRAE, INPT, INP-ENVT, 31326, Castanet Tolosan, France
| | - M Barnett
- Beebytes Analytics CIC, Roslin Innovation Centre, Easter Bush Campus, Midlothian, UK
| | - D Wragg
- The Roslin Institute, University of Edinburgh, Easter Bush Campus, Midlothian, UK.
- Beebytes Analytics CIC, Roslin Innovation Centre, Easter Bush Campus, Midlothian, UK.
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Pittock S, Barnett M, Bennett J, Berthele A, de Sèze J, Levy M, Nakashima I, Oreja-Guevara C, Palace J, Paul F, Pozzilli C, Allen K, Mashhoon Y, Yountz M, Kim H. P-53 Efficacy and safety of ravulizumab in adults with anti-aquaporin-4 antibody-positive neuromyelitis optica spectrum disorder: Outcomes from the phase 3 CHAMPION-NMOSD trial. Clin Neurophysiol 2023. [DOI: 10.1016/j.clinph.2023.02.070] [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: 03/08/2023]
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Choon-Quinones M, Zelei T, Németh B, Tóth M, Jia XY, Barnett M, Keown P, Durie B, Harousseau JL, Hose D, Kaló Z. Systematic literature review of health economic models developed for multiple myeloma to support future analyses. J Med Econ 2023; 26:110-119. [PMID: 36346000 DOI: 10.1080/13696998.2022.2144056] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
AIMS The goal of this study was to review the economic evaluations of health technologies in multiple myeloma (MM) and provide guidance and recommendations for future health economic analyses. MATERIALS AND METHODS A systemic literature review (SLR) was conducted on original economic assessment studies and structured review papers focusing on the studies in MM. The search was limited to English language papers published from 1 January 2000 onwards. Publications not applying any type of modelling methodology to describe disease progression and patient pathways over a specific time horizon were excluded. RESULTS A total of 2,643 publications were initially identified, of which 148 were eligible to be included in the full-text review phase. From these, 49 publications were included in the final analysis. Most published health economic analyses supported by models came from high-income countries. Evaluations from middle-income countries were rarely published. Diagnostic technologies were rarely modelled and integrated care had not been modelled. Very few models investigated MM treatments from a societal perspective and there was a relative lack of evaluations regarding minimal residual disease (MRD). LIMITATIONS Limitations of the publications included differences between trial populations and modelled populations, justification of methods, lack of confounder analyses, and small trial populations. Limitations of our study included the infeasibility of comparing MM economic evaluations due to the significant variance in modelled therapeutic lines and indications, and the relative scarcity of published economic evaluations from non-high-income countries. CONCLUSIONS As published economic models lacked many of the elements of the complex and heterogeneous patient pathways in MM and they focused on single decision problems, a thorough, open-source economic whole disease modelling framework is needed to assess the economic value of a wide range of technologies across countries with various income levels with a more detailed view on MM, by including patient-centric and societal aspects.
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Affiliation(s)
| | - Tamás Zelei
- Syreon Research Institute, Budapest, Hungary
| | | | - Manna Tóth
- Syreon Research Institute, Budapest, Hungary
- Center for Health Technology Assessment, Semmelweis University, Budapest, Hungary
| | | | - Mike Barnett
- Department of Medicine, University of British Columbia, Vancouver, Canada
| | - Paul Keown
- Syreon Research Institute, Budapest, Hungary
- Department of Medicine, University of British Columbia, Vancouver, Canada
| | - Brian Durie
- International Myeloma Foundation, North Hollywood, CA, USA
| | | | - Dirk Hose
- Vrije Universiteit Brussel (VUB), Brussels, Belgium
| | - Zoltán Kaló
- Syreon Research Institute, Budapest, Hungary
- Center for Health Technology Assessment, Semmelweis University, Budapest, Hungary
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Choon-Quinones M, Hose D, Kaló Z, Zelei T, Harousseau JL, Durie B, Keown P, Barnett M, Jakab I. Patient and Caregiver Experience Decision Factors in Treatment Decision Making: Results of a Systematic Literature Review of Multiple Myeloma Decision Aids. Value Health 2023; 26:39-49. [PMID: 35613958 DOI: 10.1016/j.jval.2022.04.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/02/2021] [Revised: 02/18/2022] [Accepted: 04/08/2022] [Indexed: 06/15/2023]
Abstract
OBJECTIVES Decision-aids (DAs) may facilitate shared decision-making for patients and caregivers, by providing evidence-based information to assist healthcare professionals, patients, and caregivers in making choices about aspects of care, and/or highlighting decision factors to discuss with the potential of altering the treatment decision. These decision factors may not be well integrated in DAs. METHODS A systematic literature review was conducted in the field of multiple myeloma (MM) on peer-reviewed publications, extended with a gray literature search. Data on whether and how patient and caregiver experience elements, other than survival and physical quality of life, were mentioned as decision factors in the identified MM DAs were extracted and analyzed qualitatively. RESULTS Seventy MM DAs were found and analyzed; 51% of DAs mentioned any patient non-routinely assessed experience decision factors and only 17% mentioned any caregiver-related information. One hundred and forty potential decision factors were extracted, deduplicated and categorized into the following categories: 1) financial, 2) mode of administration / transportation issues, 3) personal beliefs and values, 4) emotional and social quality of life, 5) other medical information, 6) availability of social support, 7) caregiver burden. None of the DAs presented a comprehensive framework on all seven categories of decision factors being consider when mapping patient and caregiver experience value elements in MM. CONCLUSIONS Based on available DAs, we recommend a set of patient and caregiver experience decision factors that have the potential to affect treatment choices of patients with MM, which should be included in DAs, including MM clinical guidelines.
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Affiliation(s)
| | - Dirk Hose
- Vrije Universiteit Brussel, Brussels, Belgium
| | - Zoltán Kaló
- Center for Health Technology Assessment, Semmelweis University, Budapest, Hungary; Syreon Research Institute, Budapest, Hungary
| | - Tamás Zelei
- Syreon Research Institute, Budapest, Hungary
| | | | - Brian Durie
- International Myeloma Foundation, Studio City, CA, USA
| | - Paul Keown
- University of British Columbia, Vancouver, BC, Canada
| | - Mike Barnett
- University of British Columbia, Vancouver, BC, Canada
| | - Ivett Jakab
- Syreon Research Institute, Budapest, Hungary
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Choon-Quinones M, Zelei T, Barnett M, Keown P, Durie B, Kaló Z, Almási T, Harousseau JL, Hose D. Beyond medicines' barriers: exploring the true cost of multiple myeloma. J Med Econ 2022; 25:1167-1175. [PMID: 36397678 DOI: 10.1080/13696998.2022.2133823] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
AIM The goal of this research was to quantify and qualify all the costs associated with multiple myeloma (MM) from a healthcare and societal perspective and to highlight certain costs that are often underestimated. MATERIALS AND METHODS The study used a mixed methods approach that consisted of three phases: a systemic literature review (SLR), a virtual roundtable discussion based on the results of the SLR, and an online survey. RESULTS In total, 4321 records were identified by literature and snowball searches. After applying the eligibility criteria, 49 articles were included in the narrative summary. As combination treatments have become the mainstay of MM treatment, drug costs have become the most important component of the total healthcare costs. Collected evidence suggests that optimizing treatment pathways, besides prolonging patient survival and maintaining quality of life, has the potential to generate cost savings for all stakeholders (payers and patients). Improved patient access to new therapies that can improve outcomes may reduce the "financial toxicity" of MM by decreasing patients' and caregivers' productivity loss due to better prognosis and it also has the potential of reducing patients' direct health care payments. LIMITATIONS Heterogeneity of research objectives of included studies, costing methods, and applied measurement units limited the comparability of cost data between studies. Data for more than half of the world's population, including China, Russia, the Middle East, and Africa were not investigated. CONCLUSION While treatment costs are burdensome for healthcare systems, it is only one of several items that make up the True Cost of MM. Understanding these burdens is one way to argue for optimized treatment pathways and improve patient outcomes by tearing down access barriers.
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Affiliation(s)
| | - Tamás Zelei
- Syreon Research Institute, Budapest, Hungary
| | - Mike Barnett
- Department of Medicine, University of British Columbia, Vancouver, Canada
| | - Paul Keown
- Syreon Research Institute, Budapest, Hungary
- Department of Medicine, University of British Columbia, Vancouver, Canada
| | - Brian Durie
- International Myeloma Foundation, Studio City, CA, USA
| | - Zoltán Kaló
- Syreon Research Institute, Budapest, Hungary
- Center for Health Technology Assessment, Semmelweis University, Budapest, Hungary
| | | | | | - Dirk Hose
- Department of Hematology, Vrije Universiteit Brussel (VUB), Brussels, Belgium
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Smith L, Helphrey J, Sawyer J, Rodriguez D, Rose D, Fierro L, Moore J, Parsons T, Barnett M. A-21 Inhibition of Overlearned Verbal Responses and Quantity of Speech Among Age Cohorts. Arch Clin Neuropsychol 2019. [DOI: 10.1093/arclin/acz034.21] [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: 11/13/2022] Open
Abstract
Abstract
Objective
Off-topic speech (OTS) has been linked with deficits in executive functioning, and specifically inhibition. OTS research has focused primarily on tangentiality, whereas in this study we focused on quantity of speech. The purpose of this study was to investigate the relationship between inhibition of overlearned responses using a Stroop task and quantity of speech.
Method
A college sample of young adults (n = 63; age 18-28) and healthy, community-dwelling older adults (n = 76; age 60-99) completed the Delis-Kaplan Executive Function Systems (D-KEFS) Color-Word Interference Test and provided a verbal sample in which they recounted a procedural memory and an episodic memory. These samples were transcribed and rated for quantity of speech by three independent judges.
Results
Among all participants, longer time to complete color naming (r = -.21, p = .02) and inhibition (r = -.21, p = .01) was associated with lower quantity of speech on procedural memory. Among young adults, longer time to complete inhibition was associated with lower quantity of speech (r = -.26, p = .04). Among older adults, longer time to complete color naming (r = -.32, p = .005), word reading (r = -.27, p = .02), and inhibition (r = -.35, p = .002) was associated with lower quantity of speech. No relationships were found between performance on Stroop conditions and quantity of speech for episodic memory.
Conclusions
Results suggest that among both age cohorts, difficulty inhibiting overlearned verbal responses is associated with lower quantity of speech regarding a procedural memory but not an episodic memory.
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Helphrey J, Smith L, Rodriguez D, Rose III D, Sawyer J, Edzards S, Fierro L, Moore J, Parsons T, Barnett M. A-13 Sustained Attention, Impulsivity, and Tangentiality of Speech Among Young Adults and Older Adults. Arch Clin Neuropsychol 2019. [DOI: 10.1093/arclin/acz034.13] [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: 11/12/2022] Open
Abstract
Abstract
Objective
Previous research has linked off-topic verbosity (OTV) among older adults with lower performance on neuropsychological tests tapping attention and executive functioning. However, most of this research has utilized relatively brief neurocognitive measures. Continuous performance tests (CPTs) measure sustained attention and impulsivity. The purpose of this study was to investigate relationships between sustained attention, impulsivity, and tangentiality of speech among young adults and older adults.
Method
Young adult college students (age 18-29; n= 61) and healthy, community-dwelling older adults (age 60-99; n = 81) were administered the Conners’ Continuous Performance Test – 3 and provided a sample of speech (one episodic memory and one procedural memory). These speech samples were transcribed and rated for tangentiality by three independent reviewers.
Results
Among all participants, greater tangentiality of speech was associated with omission errors (r = .22, p = .01) but not with commission errors. This same pattern was found among older adults: omission errors (r = .23, p = .04) were associated with greater tangentiality but commission errors were not. Among young adults, these relationships were not statistically significant.
Conclusions
Results suggest that tangentiality of speech is associated with inattentiveness but not impulsivity, and this relationship may be more marked among older adults than young adults. OTV among older adults may stem from difficulty sustaining attention over time rather than diminished capacity for inhibiting impulses.
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Fraser A, Cooper R, Barnett M, McGowan N, Campbell J. Development and implementation of a therapeutic GMP-compliant allogeneic peptide EBV-specific T cell bank using optimized culture and analysis processes. Cytotherapy 2019. [DOI: 10.1016/j.jcyt.2019.03.344] [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: 10/26/2022]
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9
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Kim D, Cho E, Couch S, Barnett M. Culturally Relevant Science: Incorporating Visualizations and Home Culture in An Invention-oriented Middle School Science Curriculum. technol innov 2019. [DOI: 10.21300/20.3.2019.251] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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10
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Gellatly R, Brookman-Frazee L, Barnett M, Gonzalez JC, Kim JJ, Lau AS. Therapist Reports of EBP Client Engagement Challenges in Sessions with Diverse Youth and Families in Community Mental Health Settings. Child Youth Care Forum 2019; 48:55-75. [PMID: 32132809 PMCID: PMC7055736 DOI: 10.1007/s10566-018-9472-z] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Abstract
BACKGROUND The implementation of evidence-based practices (EBPs) in community settings appears to result in reduced benefit relative to controlled trials. This difference in outcomes may be attributable in part to engagement challenges therapists encounter when delivering EBPs to low-income ethnic minority youth and families. OBJECTIVE The current study sought to identify therapist, client, and session characteristics associated with therapist-reported engagement challenges in therapy sessions, as well the associations between two types of client engagement challenges and therapists' self-reported ability to deliver the EBP in sessions within a system-driven implementation in public children's mental health services. METHOD One hundred and three therapists reported on two types of engagement challenges-Limited Client Engagement and Expressed Client Concerns-in 702 sessions with 274 clients. RESULTS Results indicated that therapists reported a higher frequency of Limited Client Engagement in sessions with male clients and in sessions where the youth was present, and by therapists with smaller caseloads. No variables significantly predicted Expressed Client Concerns. Both types of engagement challenges were negatively associated with therapists' report of their ability to carry out intended activities in the same session. CONCLUSIONS Findings suggest that therapists may benefit from learning strategies to address these two distinct types of engagement challenges encountered in implementation of EBPs with diverse families in community settings.
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Affiliation(s)
- R. Gellatly
- University of California, Los Angeles, Los Angeles, CA, USA
| | - L. Brookman-Frazee
- University of California, San Diego, La Jolla, CA, USA
- Child and Adolescent Services Research Center, San Diego, CA, USA
| | - M. Barnett
- University of California, Santa Barbara, Santa Barbara, CA, USA
| | - J. C. Gonzalez
- University of California, Santa Barbara, Santa Barbara, CA, USA
| | - J. J. Kim
- University of California, Los Angeles, Los Angeles, CA, USA
| | - A. S. Lau
- University of California, Los Angeles, Los Angeles, CA, USA
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Macleay C, Buckley P, Barnett M. Feeding and management practices amongst Australian horse owners. J Vet Behav 2019. [DOI: 10.1016/j.jveb.2018.06.029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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12
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Cantu C, Martin K, Moore J, Roark M, Kovacks A, Clark K, Barnett M. RELIGIOUS COMMITMENT MEDIATES HOSPICE NURSES’ SOCIAL POLITICAL IDEOLOGY AND ATTITUDES TOWARD EUTHANASIA. Innov Aging 2018. [DOI: 10.1093/geroni/igy023.1038] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Dzumba D, Cantu C, Humphries N, Kovacks A, Shelly C, Bailey T, Barnett M. MORAL IDENTITY INTERNALIZATION, NOT SYMBOLIZATION, IS ASSOCIATED WITH LOWER AGEISM AMONG YOUNGER ADULTS. Innov Aging 2018. [DOI: 10.1093/geroni/igy023.1809] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
| | - C Cantu
- The University of North Texas
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Martin K, Moore J, Corley K, Cantu C, Barnett M. PERCEPTIONS OF PAST GENERATIONS, GRATITUDE, AND GENERATIVITY. Innov Aging 2018. [DOI: 10.1093/geroni/igy023.1692] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
| | - J Moore
- The University of Texas at Tyler
| | | | - C Cantu
- The University of North Texas
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Fletcher LN, Melin H, Adriani A, Simon AA, Sanchez-Lavega A, Donnelly PT, Antuñano A, Orton GS, Hueso R, Kraaikamp E, Wong MH, Barnett M, Moriconi ML, Altieri F, Sindoni G. Jupiter's Mesoscale Waves Observed at 5 μm by Ground-based Observations and Juno JIRAM. Astron J 2018; 156:67. [PMID: 30510303 PMCID: PMC6267995 DOI: 10.3847/1538-3881/aace02] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
We characterize the origin and evolution of a mesoscale wave pattern in Jupiter's North Equatorial Belt (NEB), detected for the first time at 5 μm using a 2016-17 campaign of "lucky imaging" from the VISIR instrument on the Very Large Telescope and the NIRI instrument on the Gemini observatory, coupled with M-band imaging from Juno's JIRAM instrument during the first seven Juno orbits. The wave is compact, with a 1°.1-1°.4 longitude wavelength (wavelength 1300-1600 km, wavenumber 260-330) that is stable over time, with wave crests aligned largely north-south between 14°N and 17°N (planetographic). The waves were initially identified in small (10° longitude) packets immediately west of cyclones in the NEB at 16°N but extended to span wider longitude ranges over time. The waves exhibit a 7-10 K brightness temperature amplitude on top of an ∼210 K background at 5 μm. The thermal structure of the NEB allows for both inertio-gravity waves and gravity waves. Despite detection at 5 μm, this does not necessarily imply a deep location for the waves, and an upper tropospheric aerosol layer near 400-800 mbar could feature a gravity wave pattern modulating the visible-light reflectivity and attenuating the 5-μm radiance originating from deeper levels. Strong rifting activity appears to obliterate the pattern, which can change on timescales of weeks. The NEB underwent a new expansion and contraction episode in 2016-17 with associated cyclone-anticyclone formation, which could explain why the mesoscale wave pattern was more vivid in 2017 than ever before.
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Affiliation(s)
- Leigh N Fletcher
- Department of Physics and Astronomy, University of Leicester, University Road, Leicester, LE1 7RH, UK;
| | - H Melin
- Department of Physics and Astronomy, University of Leicester, University Road, Leicester, LE1 7RH, UK;
| | - A Adriani
- INAF-Istituto di Astrofisica e Planetologia Spaziali, Roma, Italy
| | - A A Simon
- NASA Goddard Space Flight Center Solar System Exploration Division (690) Greenbelt, MD 20771, USA
| | - A Sanchez-Lavega
- Departamento de Física Aplicada I, Escuela de Ingeniera de Bilbao, UPV/EHU, Plaza Ingeniero Torres Quevedo, 1, E-48013 Bilbao, Spain
| | - P T Donnelly
- Department of Physics and Astronomy, University of Leicester, University Road, Leicester, LE1 7RH, UK;
| | - A Antuñano
- Department of Physics and Astronomy, University of Leicester, University Road, Leicester, LE1 7RH, UK;
| | - G S Orton
- Jet Propulsion Laboratory, California Institute of Technology, 4800 Oak Grove Drive, Pasadena, CA 91109, USA
| | - R Hueso
- Departamento de Física Aplicada I, Escuela de Ingeniera de Bilbao, UPV/EHU, Plaza Ingeniero Torres Quevedo, 1, E-48013 Bilbao, Spain
| | - E Kraaikamp
- Jourdanstraat 121/8, B-1060, Sint-Gillis, Belgium
| | - M H Wong
- University of California at Berkeley, Astronomy Department, Berkeley, CA 947200-3411, USA
| | - M Barnett
- University of California at Berkeley, Astronomy Department, Berkeley, CA 947200-3411, USA
| | - M L Moriconi
- CNR-Istituto di Scienze dell Atmosfera e del Clima, Bologna e Roma, Italy
| | - F Altieri
- INAF-Istituto di Astrofisica e Planetologia Spaziali, Roma, Italy
| | - G Sindoni
- INAF-Istituto di Astrofisica e Planetologia Spaziali, Roma, Italy
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Abstract
The impact of plasma exchange (PE) on the treatment of severe Guillain-Barré syndrome (GBS) was studied by comparing all the 16 patients treated with PE in a London teaching hospital between January 1985 and August 1987, with 64 historical controls drawn from a series of patients observed during a prospective study in South East England in 1983 and 1984. There were no GBS-related deaths in the PE treated group but seven in the historical controls (2P = 0.39). The median duration of ventilation was only 20 days (range 7-64) in the PE group compared with 36 days (range 14-365) in the surviving patients in the control group (2P = 0.06, 95% confidence interval of difference in medians -36 to 0 days). The PE group walked earlier without aid (median 55.5 compared with 86 days, 2P = 0.04, 95% confidence interval of difference in medians -88 to -2 days). Three months after the onset of neuropathy all PE treated patients were able to walk with support or better, whereas 19 of the surviving historical controls were unable to walk even with support (2P = 0.009). The costs of PE were offset by savings in intensive care unit and hospital expenditure.
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Affiliation(s)
- J Tharakan
- Department of Neurology, United Medical and Dental School Guy's Hospital, London
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18
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Vucic S, Barnett M, Blum S, Shuey N, Worrell R, Macdonell R. Treatment satisfaction in patients with RRMS treated with teriflunomide in routine clinical practice: Aubpro study design. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.2212] [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: 10/18/2022]
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Klistorner A, Graham EC, Yiannikas C, Barnett M, Parratt J, Garrick R, Wang C, You Y, Graham SL. Progression of retinal ganglion cell loss in multiple sclerosis is associated with new lesions in the optic radiations. Eur J Neurol 2017; 24:1392-1398. [PMID: 28799222 DOI: 10.1111/ene.13404] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2017] [Accepted: 07/04/2017] [Indexed: 01/21/2023]
Abstract
BACKGROUND AND PURPOSE The mechanism of retinal ganglion cell and retinal nerve fiber layer loss in multiple sclerosis (MS) remains unknown. This study aimed to investigate the association between temporal retinal nerve fiber layer (tRNFL) thinning and disease activity in the brain determined by T2 lesions on magnetic resonance imaging (MRI). METHODS Fifty-five consecutive patients with relapsing-remitting MS and 25 controls were enrolled. All patients underwent annual optical coherence tomography and high-resolution MRI scans for tRNFL thickness and brain lesion volume analysis, respectively. RESULTS Significant tRNFL thickness reduction was observed over the 3-year follow-up period at a relatively constant rate (1.02 μm/year). Thinning of tRNFL fibers was more prominent in younger patients (P = 0.01). The tRNFL loss was associated with new MRI lesions in the optic radiations (ORs). There was significantly greater tRNFL thinning in patients with new lesional activity in the ORs compared with patients with new lesions outside the ORs (P = 0.009). CONCLUSIONS This study supports the notion that retrograde transneuronal degeneration caused by OR lesions might play a role in progressive retinal nerve fiber layer loss. In addition, the results of the study also indicate that the disease-related neurodegenerative changes in the retina start much earlier than the clinical diagnosis of MS.
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Affiliation(s)
- A Klistorner
- Save Sight Institute, Sydney Medical School, University of Sydney, Sydney, NSW.,Faculty of Medicine and Health Sciences, Macquarie University, Sydney, NSW.,Sydney Neuroimaging Analysis Centre, Sydney, NSW
| | - E C Graham
- Save Sight Institute, Sydney Medical School, University of Sydney, Sydney, NSW
| | | | - M Barnett
- Sydney Neuroimaging Analysis Centre, Sydney, NSW.,Brain and Mind Centre, University of Sydney, Sydney, NSW
| | - J Parratt
- Royal North Shore Hospital, Sydney, NSW
| | - R Garrick
- St Vincent's Hospital, Sydney, NSW, Australia
| | - C Wang
- Sydney Neuroimaging Analysis Centre, Sydney, NSW.,Brain and Mind Centre, University of Sydney, Sydney, NSW
| | - Y You
- Save Sight Institute, Sydney Medical School, University of Sydney, Sydney, NSW.,Faculty of Medicine and Health Sciences, Macquarie University, Sydney, NSW
| | - S L Graham
- Faculty of Medicine and Health Sciences, Macquarie University, Sydney, NSW
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Barnett M, Imre I, Wagner C, Di Rocco R, Johnson N, Brown G. Evaluating potential artefacts of photo-reversal on behavioural studies with nocturnal invasive sea lamprey (Petromyzon marinus). CAN J ZOOL 2016. [DOI: 10.1139/cjz-2015-0254] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Sea lampreys (Petromyzon marinus L., 1758) are nocturnal, so experiments evaluating their behaviour to chemosensory cues have typically been conducted at night. However, given the brief timeframe each year that adult P. marinus are available for experimentation, we investigated whether P. marinus exposed to a 12 h shifted diurnal cycle (reversed photoperiod) could be tested in a darkened arena during the day and show the same response to chemosensory cues as natural photoperiod P. marinus that were tested during the night. Ten replicates of 10 P. marinus, from each photoperiod, were exposed to deionized water (negative control), 2-phenylethylamine hydrochloride (PEA HCl, putative predator cue), or P. marinus whole-body extract (conspecific alarm cue). All P. marinus demonstrated a significant avoidance response to both cues. No significant differences were found in avoidance to PEA HCl between photoperiods. Avoidance of P. marinus whole-body extract was significantly stronger in natural compared with reversed photoperiod P. marinus. The use of reversed photoperiod subjects is suitable for examining the presence or absence of avoidance in response to novel chemosensory alarm cues, or the change in the magnitude of antipredator response. Studies investigating the natural magnitude of antipredator response should use natural photoperiod experimental subjects.
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Affiliation(s)
- M. Barnett
- Department of Biology, Algoma University, 1520 Queen Street East, Sault Ste. Marie, ON P6A 2G4, Canada
| | - I. Imre
- Department of Biology, Algoma University, 1520 Queen Street East, Sault Ste. Marie, ON P6A 2G4, Canada
| | - C.M. Wagner
- Michigan State University, 13 Natural Resources Building, East Lansing, MI 48823, USA
| | - R.T. Di Rocco
- Department of Biology, Concordia University, 7141 Sherbrooke Street West, Montréal, QC H4B 1R6 Canada
| | - N.S. Johnson
- U.S. Geological Survey, Great Lakes Science Center, Hammond Bay Biological Station, 11188 Ray Road, Millersburg, MI 49759, USA
| | - G.E. Brown
- Department of Biology, Concordia University, 7141 Sherbrooke Street West, Montréal, QC H4B 1R6 Canada
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Spelman T, Mekhael L, Burke T, Butzkueven H, Hodgkinson S, Havrdova E, Horakova D, Duquette P, Izquierdo G, Grand'Maison F, Grammond P, Barnett M, Lechner-Scott J, Alroughani R, Trojano M, Lugaresi A, Granella F, Pucci E, Vucic S. Risk of early relapse following the switch from injectables to oral agents for multiple sclerosis. Eur J Neurol 2016; 23:729-36. [DOI: 10.1111/ene.12929] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2015] [Accepted: 11/04/2015] [Indexed: 02/04/2023]
Affiliation(s)
- T. Spelman
- Department of Neurology; Royal Melbourne Hospital; Parkville Vic. Australia
- Department of Medicine (RMH); University of Melbourne; Parkville Vic. Australia
| | | | - T. Burke
- Westmead Hospital; Sydney NSW Australia
| | - H. Butzkueven
- Department of Neurology; Royal Melbourne Hospital; Parkville Vic. Australia
- Department of Medicine (RMH); University of Melbourne; Parkville Vic. Australia
| | | | | | | | | | - G. Izquierdo
- Hospital Universitario Virgen Macarena; Sevilla Spain
| | | | - P. Grammond
- Center de réadaptation déficience physique Chaudière-Appalache; Levis QC Canada
| | - M. Barnett
- Brain and Mind Research Institute; Sydney NSW Australia
| | | | | | - M. Trojano
- Department of Basic Medical Sciences; Neuroscience and Sense Organs; University of Bari; Bari Italy
| | - A. Lugaresi
- MS Center; Department of Neuroscience, Imaging and Clinical Sciences; University ‘G. d'Annunzio’; Chieti Italy
| | - F. Granella
- Department of Neurosciences; University of Parma; Parma Italy
| | - E. Pucci
- Neurology Unit; ASUR Marche - AV3; Macerata Italy
| | - S. Vucic
- Westmead Hospital; Sydney NSW Australia
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22
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Parsons T, Barnett M, Dumas B. C-42Virtual Multiple Errands Test for “Ecologically Valid” Assessment of Cohort Memory Effects. Arch Clin Neuropsychol 2015. [DOI: 10.1093/arclin/acv047.244] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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23
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Mehta D, Barnett M, Zhou L, Woulfe T, Rolfe-Vyson V, Rowland V, Simpson D, Merriman E. Management and outcomes of single subsegmental pulmonary embolus: a retrospective audit at North Shore Hospital, New Zealand. Intern Med J 2015; 44:872-6. [PMID: 24942202 DOI: 10.1111/imj.12507] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2014] [Accepted: 06/13/2014] [Indexed: 12/18/2022]
Abstract
BACKGROUND It is unknown whether filling defects in subsegmental arteries on multidetector computed tomography pulmonary angiography correlate with clinically relevant subsegmental pulmonary embolism (PE) on pulmonary angiography. Current guidelines do not differentiate between PE in segmental and subsegmental vessels, and many patients receive at least 3 months anticoagulation. The strategy employed at North Shore Hospital in haemodynamically stable patients with single subsegmental PE is to perform bilateral lower leg compression ultrasound (CUS). Anticoagulation is withheld if CUS is negative; a bilateral CUS is repeated in 7-10 days. AIM The aim of this retrospective audit was to ensure our current management strategy is safe. METHODS All diagnoses of single subsegmental PE between June 2005 and June 2013 were included. The primary outcome was the rate of venous thromboembolism (VTE) recurrence within 3 months of single subsegmental PE diagnosis. Secondary outcomes were rates of major/minor bleeding and all-cause mortality. RESULTS Thirty-two patients were included - 20 were treated with anticoagulation; 12 were managed with observation/serial bilateral lower limb CUS. None of the patients in either group had VTE recurrence by 3 months. No bleeding episodes were observed in the observation group; there was a 10% major bleeding rate (n = 2) in the treatment group. One death occurred in each group, neither of which was attributed to VTE. CONCLUSION Withholding anticoagulation in patients with single subsegmental PE and negative serial bilateral CUS appears to be a safe and effective management strategy, with a low risk of VTE recurrence.
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Affiliation(s)
- D Mehta
- Department of Radiology, North Shore Hospital, Auckland, New Zealand
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24
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Shoushtarian M, Barnett M, McMahon F, Ferris J. Impact of introducing practical obstetric multi-professional training (PROMPT) into maternity units in Victoria, Australia. BJOG 2014; 121:1710-8. [PMID: 24751206 DOI: 10.1111/1471-0528.12767] [Citation(s) in RCA: 61] [Impact Index Per Article: 6.1] [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: 01/31/2014] [Indexed: 11/30/2022]
Abstract
OBJECTIVE To assess the introduction of Practical Obstetric Multi-professional Training (PROMPT) into maternity units and evaluate effects on organisational culture and perinatal outcomes. DESIGN A retrospective cohort study. SETTING Maternity units in eight public hospitals in metropolitan and regional Victoria, Australia. POPULATION Staff in eight maternity units and a total of 43,408 babies born between July 2008 and December 2011. METHODS Representatives from eight Victorian hospitals underwent a single day of training (Train the Trainer), to conduct PROMPT. Organisational culture was compared before and after PROMPT. Clinical outcomes were evaluated before, during and after PROMPT. MAIN OUTCOME MEASURES The number of courses run and the proportion of staff trained were determined. Organisational culture was measured using the Safety Attitude Questionnaire. Clinical measures included Apgar scores at 1 and 5 minutes (Apgar 1 and Apgar 5), cord lactate, blood loss and length of baby's stay in hospital. RESULTS Seven of the eight hospitals conducted PROMPT. Overall about 50% of staff were trained in each year of the study. Significant increases were found in Safety Attitude Questionnaire scores representing domains of teamwork (Hedges' g 0.27, 95% confidence interval [95% CI] 0.13-0.41), safety (Hedges' g 0.28, 95% CI 0.15-0.42) and perception of management (Hedges' g 0.17, 95% CI 0.04-0.31). There were significant improvements in Apgar 1 (OR 0.84, 95% CI 0.77-0.91), cord lactates (odds ratio 0.92, 95% CI 0.85-0.99) and average length of baby's stay in hospital (Hedges' g 0.03, 95% CI 0.01-0.05) during or after training, but no change in Apgar 5 scores or proportion of cases with high blood loss. CONCLUSION PROMPT can be introduced using the Train the Trainer model. Improvements in organisational culture and some clinical measures were observed following PROMPT.
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Affiliation(s)
- M Shoushtarian
- VicPROMPT Pilot Project, Women and Children's Program, Eastern Health, Melbourne, Vic., Australia
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Klistorner A, Sriram P, Vootakuru N, Wang C, Barnett M, Garrick R, Parratt J, Levin N, Bick A, Masters L, Graham S, Yiannikas C. Understanding mechanisms of axonal loss in non-optic neuritis eyes of MS patients. J Neurol Sci 2013. [DOI: 10.1016/j.jns.2013.07.1318] [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: 10/26/2022]
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26
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van Leeuwen WMA, Kircher A, Dahlgren A, Lützhöft M, Barnett M, Kecklund G, Åkerstedt T. Sleep, Sleepiness, and Neurobehavioral Performance While on Watch in a Simulated 4 Hours on/8 Hours off Maritime Watch System. Chronobiol Int 2013; 30:1108-15. [DOI: 10.3109/07420528.2013.800874] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Verheul F, Smolders J, Trojano M, Lepore V, Zwanikken C, Amato MP, Grand'Maison F, Butzkueven H, Marrosu M, Duquette P, Comi G, Izquierdo G, Grammond P, Lus G, Petersen T, Bergamaschi R, Giuliani G, Boz C, Coniglio G, Van Pesch V, Lechner-Scott J, Cavalla P, Granella F, Avolio C, Fiol M, Poehlau D, Saladino ML, Gallo P, Deri N, Oleschko Arruda W, Paine M, Ferro M, Barnett M, Cabrera-Gomez JA, Slee M, Moore F, Shaw C, Petkovska-Boskova T, Rutherford M, Engelsen O, Damoiseaux J, Hupperts R. Fluctuations of MS births and UV-light exposure. Acta Neurol Scand 2013; 127:301-8. [PMID: 22970985 DOI: 10.1111/ane.12007] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/13/2012] [Indexed: 11/27/2022]
Abstract
BACKGROUND Patients with multiple sclerosis (MS) are more frequently born in spring when compared to autumn. Fluctuation of UV-light has been hypothesized to drive this phenomenon. AIM To assess the correlation between fluctuation of sunlight and birth season in persons with MS. METHODS For this record-linkage study, we collected from the international MSBase and the Italian MS iMed-web databases the dates of birth of 11,415 patients with MS from 36 centres from 15 countries worldwide and compared these to dates of live-births from national registries. From all participating sites, we collected data on UV-light fluctuation and assessed its correlation with seasonal fluctuation in MS births. RESULTS Compared with the reference cohort, an increased proportion of persons with MS were born in spring and a decreased proportion in autumn (odds ratio (OR) to be born in spring versus autumn = 1.158, χ² = 36.347, P < 0.001). There was no significantly increased fluctuation of MS births with increased quartile of ambient UV-light fluctuation (Ptrend = 0.086). CONCLUSION Seasonal fluctuation of MS births as found in this worldwide cohort of patients with MS did not correlate with variation in seasonal fluctuation of UV-light. Most likely, it results from a complex interplay between fluctuation of sunlight, behavioural factors, other environmental factors and (epi)genetic factors.
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Affiliation(s)
- F. Verheul
- Groene Hart Ziekenhuis; Gouda; The Netherlands
| | | | | | - V. Lepore
- Consorzio Mario Negri Sud; Santa Maria Imbaro; Italy
| | | | | | | | - H. Butzkueven
- Department of Medicine; Melbourne Brain Centre; University of Melbourne; Melbourne; Vic.; Australia
| | | | | | - G. Comi
- University of Milan; Milan; Italy
| | | | | | - G. Lus
- Second University of Naples; Naples; Italy
| | | | | | | | - C. Boz
- Karadeniz Technical University; Trabzon; Turkey
| | | | - V. Van Pesch
- Cliniques Universitaires Saint-Luc; Brussels; Belgium
| | | | | | | | | | - M. Fiol
- FLENI; Buenos Aires; Argentina
| | | | | | - P. Gallo
- University of Padova; Padova; Italy
| | - N. Deri
- Hospital Fernandez; Buenos Aires; Argentina
| | | | - M. Paine
- St Vincent's Hospital; Melbourne; Vic.; Australia
| | | | - M. Barnett
- Brain and Mind Research Institute; Sydney; NSW; Australia
| | | | - M. Slee
- Flinders Medical Centre; Bedford Park; SA; Australia
| | - F. Moore
- Jewish General Hospital; Montreal; Canada
| | - C. Shaw
- Geelong Hospital; Geelong; Vic.; Australia
| | | | | | - O. Engelsen
- Norwegian Institute for Air Research; Tromsø; Norway
| | - J. Damoiseaux
- Maastricht University Medical Center; Maastricht; The Netherlands
| | - R. Hupperts
- Orbis Medical Center; Sittard; The Netherlands
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Hughes S, Spelman T, Gray O, Boz C, Trojano M, Zwanikken C, Lugaresi A, Izquierdo J, Duquette P, Girard M, Grand'Maison F, Grammond P, Oreja-Guevara C, Hupperts R, Petersen T, Bergamaschi R, Giuliani G, Lechner-Scott J, Barnett M, Edite Rio M, van Pesch V, Pia Amato M, Iuliano G, Fiol M, Slee M, Verheul F, Cristiano E, Fernández Bolaños R, Saladino D, Poehlau M, Deri N, Oleschko Arruda W, Cabrera-Gomez J, Paine M, Vella N, Herbert J, Skromne E, Savino A, Shaw C, Moore F, Vucic S, Petkovska-Boskova T, Vetere S, McDonnell G, Hawkins S, Kee F, Butzkueven H. EXPOSURE TO INTERFERON-β THERAPY IN EARLY PREGNANCY: A LITERATURE REVIEW OF PREGNANCY OUTCOMES IN WOMEN WITH MULTIPLE SCLEROSIS. J Neurol Neurosurg Psychiatry 2012. [DOI: 10.1136/jnnp-2012-304200a.64] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Bowen D, Thornquist M, Goodman G, Omenn GS, Anderson K, Barnett M, Valanis B. Effects of incentive items on participation in a randomized chemoprevention trial. J Health Psychol 2012; 5:109-15. [PMID: 22048829 DOI: 10.1177/135910530000500103] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Behavioral research has an important role in increasing and maintaining participation in disease prevention trials, both in interventions and in follow-up visits. We conducted a randomized experiment among participants in the lung cancer chemoprevention trial, CARET (Carotene and Retinol Efficacy Trial) to test the effects of providing two incentives on retention. The items used for this study were a Certificate of Appreciation and one of two lapel pins, provided in a 2 2 design. Providing incentives, whether alone or in combination, had no statistically significant effect on retention by the two-year follow-up point. The successful implementation of this randomized incentive study has two implications for future research: (1) study of behavioral interventions and issues is feasible in the context of large controlled trials of disease end-points; and (2) such study is necessary to determine whether selected incentives can increase retention.
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Affiliation(s)
- D Bowen
- Fred Hutchinson Cancer Research Center, 1100 Fairview Avenue N, MP 702, Seattle, WA 98109, USA; University of Washington, USA
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30
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Chohan G, Puhl P, Barnett M, Redell S, Pollard J. 5. Phenotypic, electrophysiological and pathophysiological heterogeneity of sarcoid peripheral neuropathy. Clin Neurophysiol 2012. [DOI: 10.1016/j.clinph.2011.11.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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31
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Lechner-Scott J, Spencer B, de Malmanche T, Attia J, Fitzgerald M, Trojano M, Grand'Maison F, Gomez JAC, Izquierdo G, Duquette P, Girard M, Grammond P, Oreja-Guevara C, Hupperts R, Bergamaschi R, Boz C, Giuliani G, van Pesch V, Iuliano G, Fiol M, Cristiano E, Verheul F, Saladino ML, Slee M, Barnett M, Deri N, Flechter S, Vella N, Shaw C, Herbert J, Moore F, Petkovska-Boskova T, Jokubaitis V, Butzkueven H. The frequency of CSF oligoclonal banding in multiple sclerosis increases with latitude. Mult Scler 2011; 18:974-82. [PMID: 22185806 DOI: 10.1177/1352458511431729] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
BACKGROUND With the advent of MRI scanning, the value of lumbar puncture to assess oligoclonal band (OCB) status-for the diagnosis of multiple sclerosis (MS) is increasingly uncertain. One major issue is that the reported frequency of cerebrospinal fluid (CSF)-restricted oligoclonal banding for the diagnosis of MS varies considerably in different studies. In addition, the relationship between OCB positivity and disease outcome remains uncertain, as reported studies are generally too small to assess comparative disability outcomes with sufficient power. METHODS In order to further investigate variation of OCB positivity in patients with MS, we utilized MSBase, a longitudinal, Web-based collaborative MS outcomes registry following clinical cohorts in several continents and latitudes. We also assessed whether OCB positivity affects long-term disability outcome. RESULTS A total of 13,242 patient records were obtained from 37 MS specialist centres in 19 different countries. OCB status was documented in 4481 (34%) patients and 80% of these were OCB positive. The presence of OCB was associated with degree of latitude (p = 0.02). Furthermore, the outcome of patients negative for CSF-specific OCB was significantly better in comparison to the OCB positive patients, as assessed by Expanded Disability Status Scale change (p < 0.001). CONCLUSIONS The results of this study indicate that latitude could explain some of the inconsistencies in OCB status reported in different populations. The study confirms that OCB positivity in MS is associated with a worse long-term prognosis.
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Angelini S, Turrini E, Ravegnini G, Soverini S, Martinelli G, Kalebic T, Barnett M, Hrelia P. A pharmacogenetic approach towards personalised anti-cancer drug use. J Biotechnol 2010. [DOI: 10.1016/j.jbiotec.2010.08.274] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Soverini S, Angelini S, Barnett M, Thornquist M, Turrini E, Rosti G, Hrelia P, Kalebic T, Baccarani M, Martinelli G. Association between imatinib transporters and metabolizing enzymes genotype and response in newly diagnosed chronic myeloid leukemia (CML) patients. J Clin Oncol 2010. [DOI: 10.1200/jco.2010.28.15_suppl.6554] [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: 11/20/2022] Open
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Abstract
This article describes an initiative pioneered by the Met Office which uses weekly weather forecasts to enable the chronic obstructive pulmonary disease (COPD) outreach team in Plymouth to target patients most at risk of developing exacerbations. An active management plan is implemented during the winter to help prevent further deterioration in the patient's condition and possible hospital admissions.
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Affiliation(s)
- M Barnett
- Chest Clinic, Derriford Hospital, Plymouth, Devon.
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35
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Barnett M, Stoney P, Kroeger D, Hafezi Y, Kind P. [P21]: Differential regulation of SynGAP isoforms. Int J Dev Neurosci 2006. [DOI: 10.1016/j.ijdevneu.2006.09.085] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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36
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Doocey R, Seftel M, Barnett M, Bredeson C, Forrest D, Hogge D, Lavoie J, Nantel S, Nevill T, Shepherd J, Sutherland H, Toze C, Smith C, Song K. Autologous stem cell transplantation for poor prognosis germ cell tumors: Long term follow-up of a multi-center experience. Biol Blood Marrow Transplant 2006. [DOI: 10.1016/j.bbmt.2005.11.399] [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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37
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Barnett M, Ramsay DA, Zhu Q. Studies of collisional selection rules in thioformaldehyde (H2CS) by microwave-optical double resonance. J Chem Phys 2005; 123:154310. [PMID: 16252951 DOI: 10.1063/1.2060708] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Individual rotational levels in the A 1A2,v4=1 state of thioformaldehyde (H2CS) are excited by a cw laser and microwave transitions in the region of 8-12 GHz are measured. Some of the microwave frequencies are found to be characteristic of rotational levels other than the level being pumped. Since the microwave frequencies are characteristic of individual rotational levels in the excited state and the excited-state lifetime is approximately 170 micros, information is obtained concerning rotational selection rules during collisions. It is found that J can change by several units and Ka by 0, +/-2, +/-4, and +/-6. The latter result confirms that o-H2CS is not converted to p-H2CS by collisions. Observation of Ka doublets indicates that there are no appreciable differences between the two components.
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Affiliation(s)
- M Barnett
- Steacie Institute of Molecular Sciences, National Research Council of Canada, Ottawa, ON K1A 0R6, Canada.
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38
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Abstract
OBJECTIVES To examine the range of clinical phenotypes, tumour associations, relevant investigations, response to therapy and outcome in a large series of non-selected patients with paraneoplastic neurological disease (PND) affecting the central nervous system (CNS) in the United Kingdom. METHODS Data were obtained on patients either through direct referral or through the British Neurological Surveillance Unit (BNSU) from February 2000 to January 2001. Physicians were asked to supply information about age and sex of patients, presenting neurological syndromes, the basis of the diagnosis of PND, any associated malignancy, and treatment. Case notes were reviewed and follow up data obtained where possible one year after notification. RESULTS A total of 63 patients (48 females, 15 males) were identified, 48 through the BNSU and 15 through direct referral. Of these 52 were diagnosed as having definite PND, 10 probable PND, and 1 possible PND. The median age of onset of PND was 66 years (range 30-80 years) and only 7 patients (11%) were less than 50 years at presentation. In 53 patients (84%) the PND preceded the diagnosis of cancer. Paraneoplastic sensory neuronopathy, paraneoplastic encephalomyelitis, and paraneoplastic cerebellar degeneration (PCD) were the most common syndromes reported. The benefit of magnetic resonance imaging in the diagnosis of the disease was limited, while fluorodeoxyglucose positron emission tomography was shown to be useful for the detection of an occult malignancy in 10 out of 14 patients. Antineuronal antibodies were positive in 44/57 (77%) of cases. The following tumours were diagnosed: small cell lung cancer (30%), breast cancer (14%), ovarian cancer (8%), non-small cell lung cancer (8%), Hodgkin's lymphoma (6%), other (16%). With the exception of PCD associated with mesothelioma all other tumours diagnosed in these patients had been previously documented as being associated with PND. Only treatment of the tumour was found to be associated with a stable or improved neurological outcome at last follow up (Fisher's exact test = 4.7, p<0.03). Median survival time was 43 months (95% CI 28 to 57) from onset of neurological disease as calculated using the Kaplan-Meier survival analysis. CONCLUSIONS PND has a striking female preponderance usually affecting patients in their sixth decade and above. The median survival in our study was 43 months. The majority of patients with PND are not known to have cancer at the time of diagnosis. Our study confirms the importance of diagnosing and treating the underlying tumour.
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Affiliation(s)
- P M Candler
- Institute of Neurology and National Hospital for Neurology and Neurosurgery, London
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Gaber KA, Barnett M, Planchant Y, McGavin CR. Attitudes of 100 patients with chronic obstructive pulmonary disease to artificial ventilation and cardiopulmonary resuscitation. Palliat Med 2004; 18:626-9. [PMID: 15540671 DOI: 10.1191/0269216304pm944oa] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
UNLABELLED One hundred clinically stable outpatients with chronic obstructive pulmonary disease were surveyed at home by respiratory nurse specialists (RNS) about their views towards cardiopulmonary resuscitation (CPR) and in hospital ventilation. Written information about COPD, CPR and ventilation was provided and consent obtained. The breathing problem-based quality-of-life questionnaire (BP-QoL) was completed. The following information was recorded: age, sex, spirometry, hospital admissions, and antidepressant and oxygen usage in the previous year. Patients were then asked to imagine a scenario in which they were admitted to hospital and their chest condition deteriorated in spite of standard treatment. 'Having reached that stage would you wish to have noninvasive ventilation (NIV), invasive ventilation (IV) or CPR?' Three months later patients were asked to complete a postal patient satisfaction questionnaire. RESULTS Of 100 patients 41 were male and the mean age was 74.1 years. Fifty four patients had a FEV1 <40% and 37 had a FEV1 between 40 and 59% predicted. Twenty-four patients were on long-term oxygen therapy, eight had taken antidepressants and 56 had been admitted to hospital in the previous year. Forty-eight patients wanted all additional treatments to be attempted if needed and 12 wanted none. Nineteen patients said 'no' for CPR and 10 said 'no' for CPR and IV. There was no significant statistical difference between the groups answering 'yes' or 'no'. Seventy-six per cent of patient satisfaction questionnaires were returned. All patients were satisfied with the way they had been approached and the information received, and 98% of them thought that this issue should be discussed with all patients. CONCLUSION Attitudes towards resuscitation can be discussed with COPD patients by RNS without causing distress. Attitudes to resuscitation could not be predicted from parameters of respiratory disease severity or age.
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Affiliation(s)
- K A Gaber
- Department of Respiratory Medicine, Royal Devon and Exeter Hospital, Exeter, UK.
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Barnett M, Roy N, McCoard S, Sinclair B, Davis S, McNabb W. Protein synthesis in mammary epithelial cells
harvested from cows treated with growth hormone
or atropine. J Anim Feed Sci 2004. [DOI: 10.22358/jafs/73940/2004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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41
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Hayashi A, McCoard S, Roy N, Barnett M, Mackenzie D, McNabb W. Gene expression in bovine mammary somatic cells
isolated from milk. J Anim Feed Sci 2004. [DOI: 10.22358/jafs/73947/2004] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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42
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Pacheco D, Knowles S, Deighton M, Stuttle K, Rounce J, Barnett M, McNabb W. Measurement of iron absorption in milk-fed calves
using a dual stable isotope technique. J Anim Feed Sci 2004. [DOI: 10.22358/jafs/73888/2004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Abstract
OBJECTIVES In consideration of a US Federal Drug Administration recommendation that all parenteral nutrition admixtures should be administered through an in-line filtration device, this observational study examined the number, size distribution, and sources of particulate contamination in parenteral nutrition admixture infusion systems. METHODS Samples were drawn from the terminal connection of the infusion tubing before connection to the patient. The particles were sized and counted by optical microscopy and further investigated by electron microscopy and energy disperse spectroscopy. RESULTS Large numbers of particles were found, and information gained about their possible origin. CONCLUSIONS This study provides further support for the adoption of this Federal Drug Administration recommendation.
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Affiliation(s)
- P A Ball
- School of Pharmacy, University of Otago, Dunedin, New Zealand.
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44
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Barnett M. Abusive behaviors and HIV. Posit Aware 2001; 12:38-9. [PMID: 11785479] [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: 02/23/2023]
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45
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O'Dell M, Barnett M. The national service framework for coronary heart disease 'A blueprint for collaboration'. Intensive Crit Care Nurs 2001; 17:259-61. [PMID: 11866416] [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: 02/23/2023]
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46
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Arnold RW, Barnett M, Limstrom SA, Swanson D. Vision loss associated with a stiff neck complicating strabismus surgery. Binocul Vis Strabismus Q 2001; 16:181-6. [PMID: 11511284] [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: 02/21/2023]
Abstract
An exotropic 60 year old suffered a scleral-choroidal penetration and vitreous hemorrhage during and after strabismus surgery on a highly myopic eye when her anesthetic airway management was complicated by her previously asymptomatic and unrecognized rigid cervical spine which placed both the surgeon and the anesthetist in disadvantaged positions both physically and medically. Restoration of vision and binocularity ultimately required vitrectomy and intraocular lens implantation.
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Affiliation(s)
- R W Arnold
- Pediatric Ophthalmology and Strabismus, Ophthalmic Associates, Anchorage, Alaska 99501-2242, USA.
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Affiliation(s)
- M Barnett
- Walsgrave Hospital, Coventry and University of Warwick, UK
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Van Voorhis BJ, Barnett M, Sparks AE, Syrop CH, Rosenthal G, Dawson J. Effect of the total motile sperm count on the efficacy and cost-effectiveness of intrauterine insemination and in vitro fertilization. Fertil Steril 2001; 75:661-8. [PMID: 11287015 DOI: 10.1016/s0015-0282(00)01783-0] [Citation(s) in RCA: 170] [Impact Index Per Article: 7.4] [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: 11/29/2022]
Abstract
OBJECTIVE To determine prognostic factors for achieving a pregnancy with intrauterine insemination (IUI) and IVF. To compare the effectiveness and cost-effectiveness of IUI and IVF based on semen analysis results. DESIGN Retrospective cohort study. SETTING Academic university hospital-based infertility center. PATIENT(S) One thousand thirty-nine infertile couples undergoing 3,479 IUI cycles. Four hundred twenty-four infertile couples undergoing 551 IVF cycles. INTERVENTION(S) IUI and IVF treatment. MAIN OUTCOME MEASURE(S) Multiple logistic regression analysis was used to assess the significance of prognostic factors including a woman's age, gravidity, duration of infertility, diagnoses, use of ovulation induction, and sperm parameters for predicting the outcomes of clinical pregnancy and live birth rate after the first cycle of IUI and IVF. The relative effectiveness and cost-effectiveness of these treatments were then determined based on sperm count results. RESULT(S) Female age, gravidity, and use of ovulation induction were all independent factors in predicting pregnancy after IUI. The average total motile sperm count in the ejaculate was also an important factor, with a threshold value of 10 million. For IVF, only female age was an important predictor for both clinical and ongoing pregnancy. When the average total motile sperm count was under 10 million, IVF with ICSI was more cost-effective than IUI in our clinic. CONCLUSION(S) An average total motile sperm count of 10 million may be a useful threshold value for decisions about treating a couple with IUI or IVF.
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Affiliation(s)
- B J Van Voorhis
- Department of Obstetrics & Gynecology, University of Iowa College of Medicine, Iowa, Iowa City 52242-1080, USA.
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Affiliation(s)
- M Barnett
- Centre for Primary Health Care Studies, University of Warwick, Coventry CV4 7AL, UK
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Barnett M, Prosser J, Sutton I, Halmagyi GM, Davies L, Harper C, Dalmau J. Paraneoplastic brain stem encephalitis in a woman with anti-Ma2 antibody. J Neurol Neurosurg Psychiatry 2001; 70:222-5. [PMID: 11160472 PMCID: PMC1737194 DOI: 10.1136/jnnp.70.2.222] [Citation(s) in RCA: 44] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
A woman developed brain stem encephalopathy in association with serum anti-Ma2 antibodies and left upper lobe lung mass. T2 weighted MRI of the brain showed abnormalities involving the pons, left middle and superior cerebellar peduncles, and bilateral basal ganglia. Immunohistochemical analysis for serum antineuronal antibodies was confounded by the presence of a non-neuronal specific antinuclear antibody. Immunoblot studies showed the presence of anti-Ma2 antibodies. A premortem tissue diagnosis of the lung mass could not be established despite two CT guided needle biopsies, and the patient died as a result of rapid neurological deterioration. The necropsy showed that the lung lesion was an adenocarcinoma which expressed Ma2 immunoreactive protein. Neuropathological findings included prominent perivascular inflammatory infiltrates, glial nodules, and neuronophagia involving the brain stem, basal ganglia, hippocampus and the dentate nucleus of the cerebellum. Ma2 is an autoantigen previously identified in patients with germ cell tumours of the testis and paraneoplastic brain stem and limbic encephalitis. Our patient's clinical and immunopathological findings indicate that this disorder can affect women with lung adenocarcinoma, and that the encephalitic changes predominate in those regions of the brain known to express high concentrations of Ma proteins.
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Affiliation(s)
- M Barnett
- Institute of Clinical Neurosciences, Royal Prince Alfred Hospital, Missenden Road, Camperdown, Sydney, NSW 2050, Australia.
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