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Bosworth A, Robson J, Lawrence B, Casey AL, Fair A, Khanam S, Hudson C, O'Shea MK. Deployment of whole genome next-generation sequencing of SARS-CoV-2 in a military maritime setting. BMJ Mil Health 2023:e002296. [PMID: 36759003 DOI: 10.1136/military-2022-002296] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2022] [Accepted: 01/20/2023] [Indexed: 02/11/2023]
Abstract
BACKGROUND SARS-CoV-2 can spread rapidly on maritime platforms. Several outbreaks of SARS-CoV-2 have been reported on warships at sea, where transmission is facilitated by living and working in close quarters. Core components of infection control measures such as social distancing, patient isolation and quarantine of exposed persons are extremely difficult to implement. Whole genome sequencing (WGS) of SARS-CoV-2 has facilitated epidemiological investigations of outbreaks, impacting on outbreak management in real time by identifying transmission patterns, clusters of infection and guiding control measures. We suggest such a capability could mitigate against the impact of SARS-CoV-2 in maritime settings. METHODS We set out to establish SARS-CoV-2 WGS using miniaturised nanopore sequencing technology aboard the Royal Fleet Auxiliary ARGUS while at sea. Objectives included designing a simplified protocol requiring minimal reagents and processing steps, the use of miniaturised equipment compatible for use in limited space, and a streamlined and standalone data analysis capability to allow rapid in situ data acquisition and interpretation. RESULTS Eleven clinical samples with blinded SARS-CoV-2 status were tested at sea. Following viral RNA extraction and ARTIC sequencing library preparation, reverse transcription and ARTIC PCR-tiling were performed. Samples were subsequently barcoded and sequenced using the Oxford Nanopore MinION Mk1B. An offline version of the MinKNOW software was used followed by CLC Genomics Workbench for downstream analysis for variant identification and phylogenetic tree construction. All samples were correctly classified, and relatedness identified. CONCLUSIONS It is feasible to establish a small footprint sequencing capability to conduct SARS-CoV-2 WGS in a military maritime environment at sea with limited access to reach-back support. This proof-of-concept study has highlighted the potential of deploying such technology in the future to military environments, both maritime and land-based, to provide meaningful clinical data to aid outbreak investigations.
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Affiliation(s)
- Andrew Bosworth
- Department of Microbiology, University Hospitals Birmingham NHS Foundation Trust, Birmingham, UK
- Institute for Immunology and Immunotherapy, University of Birmingham College of Medical and Dental Sciences, Birmingham, UK
| | - J Robson
- Department of Microbiology, University Hospitals Birmingham NHS Foundation Trust, Birmingham, UK
- Defence Pathology, Royal Centre for Defence Medicine, Birmingham, UK
| | - B Lawrence
- Defence Pathology, Royal Centre for Defence Medicine, Birmingham, UK
- Department of Pathology, Portsmouth Hospitals University NHS Trust, Portsmouth, UK
| | - A L Casey
- Department of Microbiology, University Hospitals Birmingham NHS Foundation Trust, Birmingham, UK
| | - A Fair
- Molecular Pathology Diagnostic Service, University Hospitals Birmingham NHS Foundation Trust, Birmingham, UK
| | - S Khanam
- Department of Microbiology, University Hospitals Birmingham NHS Foundation Trust, Birmingham, UK
| | - C Hudson
- Department of Microbiology, Frimley Park Hospital, Camberley, UK
| | - M K O'Shea
- Institute for Immunology and Immunotherapy, University of Birmingham College of Medical and Dental Sciences, Birmingham, UK
- Defence Pathology, Royal Centre for Defence Medicine, Birmingham, UK
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2
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Weller SA, Armstrong SR, Bailey S, Burnell HT, Burt EL, Cant NE, Cawthorne KR, Chester M, Choules JE, Coe NA, Coward L, Cox VL, Emery ER, Evans CP, Finn A, Halford CM, Hamblin KA, Harrison GV, Hartley MG, Hudson C, James B, Jones HE, Keyser E, Lonsdale CL, Marshall LE, Maule CE, Miles JA, Newstead SL, Nicholls M, Osborne C, Pearcy AS, Penny LD, Perrot R, Rachwal P, Robinson V, Rushton D, Stahl FM, Staplehurst SV, Stapleton HL, Steeds K, Stephenson K, Thompson IJ, Thwaite JE, Ulaeto DO, Waters N, Wills DJ, Wills ZS, Rees C, Hutley EJ. Development and operation of the defence COVID-19 lab as a SARS-CoV-2 diagnostic screening capability for UK military personnel. BMJ Mil Health 2022; 170:e002134. [PMID: 35878971 PMCID: PMC10958320 DOI: 10.1136/military-2022-002134] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2022] [Accepted: 07/03/2022] [Indexed: 11/03/2022]
Abstract
BACKGROUND In the face of the COVID-19 pandemic, the Defence Science and Technology Laboratory (Dstl) and Defence Pathology combined to form the Defence Clinical Lab (DCL), an accredited (ISO/IEC 17025:2017) high-throughput SARS-CoV-2 PCR screening capability for military personnel. LABORATORY STRUCTURE AND RESOURCE The DCL was modular in organisation, with laboratory modules and supporting functions combining to provide the accredited SARS-CoV-2 (envelope (E)-gene) PCR assay. The DCL was resourced by Dstl scientists and military clinicians and biomedical scientists. LABORATORY RESULTS Over 12 months of operation, the DCL was open on 289 days and tested over 72 000 samples. Six hundred military SARS-CoV-2-positive results were reported with a median E-gene quantitation cycle (Cq) value of 30.44. The lowest Cq value for a positive result observed was 11.20. Only 64 samples (0.09%) were voided due to assay inhibition after processing started. CONCLUSIONS Through a sustained effort and despite various operational issues, the collaboration between Dstl scientific expertise and Defence Pathology clinical expertise provided the UK military with an accredited high-throughput SARS-CoV-2 PCR test capability at the height of the COVID-19 pandemic. The DCL helped facilitate military training and operational deployments contributing to the maintenance of UK military capability. In offering a bespoke capability, including features such as testing samples in unit batches and oversight by military consultant microbiologists, the DCL provided additional benefits to the UK Ministry of Defence that were potentially not available from other SARS-CoV-2 PCR laboratories. The links between Dstl and Defence Pathology have also been strengthened, benefitting future research activities and operational responses.
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Affiliation(s)
- Simon A Weller
- CBR Division, Defence Science and Technology Laboratory Porton Down, Salisbury, UK
| | - S R Armstrong
- CBR Division, Defence Science and Technology Laboratory Porton Down, Salisbury, UK
| | - S Bailey
- CBR Division, Defence Science and Technology Laboratory Porton Down, Salisbury, UK
| | - H T Burnell
- Operations Division, Defence Science and Technology Laboratory, Porton Down, Salisbury, UK
| | - E L Burt
- CBR Division, Defence Science and Technology Laboratory Porton Down, Salisbury, UK
| | - N E Cant
- CBR Division, Defence Science and Technology Laboratory Porton Down, Salisbury, UK
| | - K R Cawthorne
- CBR Division, Defence Science and Technology Laboratory Porton Down, Salisbury, UK
| | - M Chester
- CBR Division, Defence Science and Technology Laboratory Porton Down, Salisbury, UK
| | - J E Choules
- CBR Division, Defence Science and Technology Laboratory Porton Down, Salisbury, UK
| | - N A Coe
- CBR Division, Defence Science and Technology Laboratory Porton Down, Salisbury, UK
| | - L Coward
- CBR Division, Defence Science and Technology Laboratory Porton Down, Salisbury, UK
| | - V L Cox
- CBR Division, Defence Science and Technology Laboratory Porton Down, Salisbury, UK
| | - E R Emery
- CBR Division, Defence Science and Technology Laboratory Porton Down, Salisbury, UK
| | - C P Evans
- CBR Division, Defence Science and Technology Laboratory Porton Down, Salisbury, UK
| | - A Finn
- CBR Division, Defence Science and Technology Laboratory Porton Down, Salisbury, UK
| | - C M Halford
- CBR Division, Defence Science and Technology Laboratory Porton Down, Salisbury, UK
| | - K A Hamblin
- CBR Division, Defence Science and Technology Laboratory Porton Down, Salisbury, UK
| | - G V Harrison
- CBR Division, Defence Science and Technology Laboratory Porton Down, Salisbury, UK
| | - M G Hartley
- CBR Division, Defence Science and Technology Laboratory Porton Down, Salisbury, UK
| | - C Hudson
- Defence Pathology, Royal Centre for Defence Medicine, Birmingham, UK
| | - B James
- CBR Division, Defence Science and Technology Laboratory Porton Down, Salisbury, UK
| | - H E Jones
- CBR Division, Defence Science and Technology Laboratory Porton Down, Salisbury, UK
| | - E Keyser
- CBR Division, Defence Science and Technology Laboratory Porton Down, Salisbury, UK
| | - C L Lonsdale
- CBR Division, Defence Science and Technology Laboratory Porton Down, Salisbury, UK
| | - L E Marshall
- CBR Division, Defence Science and Technology Laboratory Porton Down, Salisbury, UK
| | - C E Maule
- CBR Division, Defence Science and Technology Laboratory Porton Down, Salisbury, UK
| | - J A Miles
- CBR Division, Defence Science and Technology Laboratory Porton Down, Salisbury, UK
| | - S L Newstead
- CBR Division, Defence Science and Technology Laboratory Porton Down, Salisbury, UK
| | - M Nicholls
- Defence Pathology, Royal Centre for Defence Medicine, Birmingham, UK
| | - C Osborne
- CBR Division, Defence Science and Technology Laboratory Porton Down, Salisbury, UK
| | - A S Pearcy
- CBR Division, Defence Science and Technology Laboratory Porton Down, Salisbury, UK
| | - L D Penny
- CBR Division, Defence Science and Technology Laboratory Porton Down, Salisbury, UK
| | - R Perrot
- CBR Division, Defence Science and Technology Laboratory Porton Down, Salisbury, UK
| | - P Rachwal
- CBR Division, Defence Science and Technology Laboratory Porton Down, Salisbury, UK
| | - V Robinson
- CBR Division, Defence Science and Technology Laboratory Porton Down, Salisbury, UK
| | - D Rushton
- Platform Systems Division, Defence Science and Technology Laboratory, Porton Down, Salisbury, UK
| | - F M Stahl
- CBR Division, Defence Science and Technology Laboratory Porton Down, Salisbury, UK
| | - S V Staplehurst
- CBR Division, Defence Science and Technology Laboratory Porton Down, Salisbury, UK
| | - H L Stapleton
- CBR Division, Defence Science and Technology Laboratory Porton Down, Salisbury, UK
| | - K Steeds
- CBR Division, Defence Science and Technology Laboratory Porton Down, Salisbury, UK
| | - K Stephenson
- CBR Division, Defence Science and Technology Laboratory Porton Down, Salisbury, UK
| | - I J Thompson
- CBR Division, Defence Science and Technology Laboratory Porton Down, Salisbury, UK
| | - J E Thwaite
- CBR Division, Defence Science and Technology Laboratory Porton Down, Salisbury, UK
| | - D O Ulaeto
- CBR Division, Defence Science and Technology Laboratory Porton Down, Salisbury, UK
| | - N Waters
- CBR Division, Defence Science and Technology Laboratory Porton Down, Salisbury, UK
| | - D J Wills
- CBR Division, Defence Science and Technology Laboratory Porton Down, Salisbury, UK
| | - Z S Wills
- CBR Division, Defence Science and Technology Laboratory Porton Down, Salisbury, UK
| | - C Rees
- CBR Division, Defence Science and Technology Laboratory Porton Down, Salisbury, UK
| | - E J Hutley
- Defence Pathology, Royal Centre for Defence Medicine, Birmingham, UK
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Cunningham R, Hudson C, Chen M, SW F, Corbin E, Radasch R, AR C. Clinical Evaluation and Early Outcome Assessment of the Vetkiss Microlocking Plate System. Vet Comp Orthop Traumatol 2020. [DOI: 10.1055/s-0040-1714952] [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: 10/20/2022]
Affiliation(s)
- R Cunningham
- Gulf Coast Veterinary Specialists, Houston, Texas, United States
| | - C Hudson
- Gulf Coast Veterinary Specialists, Houston, Texas, United States
| | - M Chen
- Dallas Veterinary Surgical Center, Dallas, Texas, United States
| | - Frederick SW
- BluePearl Veterinary Partners, Atlanta, Georgia, United States
| | - E Corbin
- Gulf Coast Veterinary Specialists, Houston, Texas, United States
| | - R Radasch
- Dallas Veterinary Surgical Center, Dallas, Texas, United States
| | - Cross AR
- BluePearl Veterinary Partners, Atlanta, Georgia, United States
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4
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Boughey P, Jones C, Williams V, Rowe L, Marchant A, Lacey E, Evans B, Morcam C, Webb N, Davies R, Smith E, Shankland H, Leopold N, Harris W, Hudson C, Edwards R. Integrated care of older people (iCOP): an service delivering comprehensive geriatric assessment on the acute assessment unit at Singleton Hospital. Physiotherapy 2020. [DOI: 10.1016/j.physio.2020.03.249] [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: 11/27/2022]
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DeVries JW, Rader JI, Keagy PM, Hudson CA, Angyal G, Arcot J, Castelli M, Doreanu N, Hudson C, Lawrence P, Martin J, Peace R, Rosner; L, Strandler HS, Szpylka J, van den Berg H, Wo C, Wurz C. Microbiological Assay-Trienzyme Procedure for Total Folates in Cereals and Cereal Foods: Collaborative Study. J AOAC Int 2019. [DOI: 10.1093/jaoac/88.1.5] [Citation(s) in RCA: 45] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Abstract
In 1996, U.S. Food and Drug Administration regulations mandated the fortification of enriched cereal-grain products with folic acid, thereby emphasizing the need for validated methods for total folates in foods, particularly cereal products. The AOAC Official Methods (944.12, 960.46) currently used for the analysis of folate in foods for compliance purposes are microbiological methods. When the fortification regulations were finalized, no Official AOAC or Approved AACC methods for folate in cereal-grain products were in place. The AOAC Official Method (992.05) for folic acid in infant formula does not incorporate important improvements in the extraction procedure and was not considered suitable for the analysis of folates in foods in general. Amicrobiological assay protocol using a trienzyme extraction procedure was prepared and submitted for comments to 40 laboratories with recognized experience in folate analysis. On the basis of comments, the method was revised to have the conjugase (gamma-glutamyl-carboxy-peptidase) treatment follow a protease treatment, to include the use of cryoprotected inoculum, and to include the spectroscopic standardization of the standard and optional use of microtiter plates. Thirteen laboratories participated in a collaborative study of 10 required and 10 optional cereal-grain products, including flour, bread, cookies, baking mixes, and ready-to-eat breakfast cereals. The majority of the participating laboratories performed the assay by the standard test tube method; others used the microtiter plate modification for endpoint quantitation with equal success. For the required products, the relative standard deviation between laboratories (RSDR) ranged from 7.4 to 21.6% for 8 fortified (or enriched) products compared with expected (Horwitz equation-based) values of 11–20%. RSDR values were higher (22.7–52.9%) for 2 unfortified cereal-grain products. For the optional products, the RSDR ranged from 1.8 to 11.2% for 8 fortified products. RSDR values were higher (27.9–28.7%) for 2 unfortified cereal-grain products. Based on the results of the collaborative study, the microbiological assay with trienzyme extraction is recommended for adoption as Official First Action.
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Affiliation(s)
- Jonathan W DeVries
- Medallion Laboratories, General Mills Inc., 9000 Plymouth Ave North, Minneapolis, MN 55427
| | - Jeanne I Rader
- U.S. Food and Drug Administration, Center for Food Safety and Nutrition, 5100 Paint Branch Pkwy, College Park, MD 20740-3835
| | - Pamela M Keagy
- U.S. Department of Agriculture, Western Regional Research Center, 800 Buchanan St, Albany, CA 94710
| | - Carol A Hudson
- U.S. Department of Agriculture, Western Regional Research Center, 800 Buchanan St, Albany, CA 94710
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6
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Leuschner RGK, Bew J, Alfonsina F, Blanco C, Bräunig J, Brookes F, Friedl E, Gooding A, Hahn G, Hudson C, Reid TMS, Short A, Souza M, Stegeman H, Talbot H, Veleta K, Withers Z, Wood M. A Medium for the Presumptive Detection of Enterobacter sakazakii in Infant Formula: Interlaboratory Study. J AOAC Int 2019. [DOI: 10.1093/jaoac/87.3.604] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [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]
Abstract
Abstract
A standard method for the detection of Enterobacteriaceae was modified for the presumptive detection of Enterobacter sakazakii, and the modified method was validated in an interlaboratory trial with 16 laboratories from 8 European countries. The modification included a differential-elective medium for the isolation of E. sakazakii, consisting of nutrient agar (NA) supplemented with 4-methyl-umbelliferyl α-D-glucoside (α-MUG). A 25 g sample was added to 225 mL buffered peptone water. After incubation at 35° or 37°C for 16 or 20 h, 10 mL nonselective enrichment was transferred into 90 mL selective enrichment. The selective enrichment was streaked on violet-red bile glucose agar (VRBGA) and incubated at 37°C for 24 h. It was streaked in parallel on NA plates supplemented with α-MUG at 50 mg/L and incubated at 25°C for 16 h, and afterwards for an additional 24 h at room temperature in the dark. E. sakazakii appeared as vivid yellow colonies under normal light and showed blue/violet fluorescence under UV light on NA + α-MUG plates. Validation samples represented powdered infant formula without E. sakazakii (blanks) and with low (1–10 colony-forming units [CFU]/25 g) and medium (1–10 CFU/g) contamination levels. All samples contained Pseudomonas aeruginosa and Lactobacillus spp. as background flora. The specificity for blank samples was 100%. The sensitivity of the low contamination level was similar for VRBGA and NA + α-MUG, i.e., 66.7% (66.7% accordance, 53.9% concordance). For the medium level the sensitivities were 96.7% (93.3% accordance, 93.5% concordance) for VRBGA and 98.3% (96.9% accordance, 96.9% concordance) for NA + α-MUG.
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Affiliation(s)
- Renata G K Leuschner
- Central Science Laboratory, Department for Environment, Food and Rural Affairs, Sand Hutton, York YO41 1LZ, United Kingdom
| | - Jan Bew
- Central Science Laboratory, Department for Environment, Food and Rural Affairs, Sand Hutton, York YO41 1LZ, United Kingdom
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7
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Scaife J, Boughey P, Jones C, Williams V, Rowe L, Marchant A, Lacey E, Rees O, Morcam C, Webb N, Davies R, Smith E, Leopold N, Harris W, Hudson C, Edwards R. 20INTEGRATED CARE OF OLDER PEOPLE (ICOP): A NEW SERVICE DELIVERING COMPREHENSIVE GERIATRIC ASSESSMENT (CGA) ON THE ACUTE ASSESSMENT UNIT AT SINGLETON HOSPITAL: RESULTS OF 2 PDSA CYCLES. Age Ageing 2019. [DOI: 10.1093/ageing/afz055.20] [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)
- J Scaife
- Department of Medicine for Older People, Singleton Hospital
| | - P Boughey
- Department of Medicine for Older People, Singleton Hospital
| | - C Jones
- Department of Medicine for Older People, Singleton Hospital
| | - V Williams
- Department of Medicine for Older People, Singleton Hospital
| | - L Rowe
- Department of Medicine for Older People, Singleton Hospital
| | - A Marchant
- Department of Medicine for Older People, Singleton Hospital
| | - E Lacey
- Department of Medicine for Older People, Singleton Hospital
| | - O Rees
- Department of Medicine for Older People, Singleton Hospital
| | - C Morcam
- Department of Medicine for Older People, Singleton Hospital
| | - N Webb
- Department of Medicine for Older People, Singleton Hospital
| | - R Davies
- Department of Medicine for Older People, Singleton Hospital
| | - E Smith
- Department of Medicine for Older People, Singleton Hospital
| | - N Leopold
- Department of Medicine for Older People, Singleton Hospital
| | - W Harris
- Department of Medicine for Older People, Singleton Hospital
| | - C Hudson
- Department of Medicine for Older People, Singleton Hospital
| | - R Edwards
- Department of Medicine for Older People, Singleton Hospital
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Abstract
BACKGROUND Despite the substantial personal and economic consequences of mental ill-health, and the relationship between mental ill-health and poor management provision, further work is needed to provide a robust evaluation of employment interventions to address mental ill-health in the workplace. AIMS To provide a pilot service evaluation of a UK organization's mental health awareness for managers' training provision. METHODS Participants were 93 employees at a UK-based organization who attended one of the three different types of, independently facilitated, half-day training courses designed to raise managers' awareness and understanding of mental health. All participants were asked to complete three questionnaires (one prior to the training session, one immediately following the training session and one 3 months after the training session). Each questionnaire contained six questions concerning participants' awareness of mental ill-health, and their confidence in dealing with mental ill-health among employees. RESULTS Participants reported feeling more aware of mental ill-health at work and more confident in their ability to address mental ill-health among their employees after attending mental health awareness for managers' training. CONCLUSIONS Although further work is needed to explore the efficacy of different types of training, the results of our pilot evaluation alongside the extant literature suggest that workplace interventions can have positive implications for good mental health.
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Affiliation(s)
- D Weston
- Behavioural Science Team, Emergency Response Department Science and Technology, Public Health England, Porton Down, Salisbury, UK
| | - C Hudson
- Occupational Health and Staff Wellbeing, Public Health England, London, UK
| | - D Carroll
- Occupational Health and Staff Wellbeing, Public Health England, London, UK
| | - S Coomber
- Occupational Health and Staff Wellbeing, Public Health England, London, UK
| | - R Amlôt
- Behavioural Science Team, Emergency Response Department Science and Technology, Public Health England, Porton Down, Salisbury, UK
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9
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Doo D, Meza-Perez S, Londono A, Boone J, Moore D, Hudson C, Betella I, Luke J, Yang E, Birrer M, Starenki D, Buchsbaum D, Norian L, Randall T, Arend R. Inhibition of the Wnt/β-catenin pathway enhances anti-tumor immunity in ovarian cancer. Gynecol Oncol 2019. [DOI: 10.1016/j.ygyno.2019.04.224] [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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10
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Pandya L, Hade E, Smith P, Nekkanti S, Hundley A, Hudson C. 46: Incidence and timing of repeat intradetrusor onabotulinum toxin and associated factors. Am J Obstet Gynecol 2019. [DOI: 10.1016/j.ajog.2019.01.076] [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: 11/17/2022]
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11
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Fayman K, Allan A, Hudson C, Logarta M. A survey of international antisepsis procedures for neuraxial catheterisation in labour. Int J Obstet Anesth 2017; 33:8-16. [PMID: 29295779 DOI: 10.1016/j.ijoa.2017.10.001] [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] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/04/2017] [Revised: 09/26/2017] [Accepted: 10/01/2017] [Indexed: 11/29/2022]
Abstract
BACKGROUND Neuraxial analgesia during labour is a mainstay of anaesthetic practice globally. Despite the potential for significant neurological and infectious complications, international antisepsis practices for neuraxial anaesthesia vary widely. AIMS The primary aim of this study was to clarify international antisepsis practices prior to neuraxial analgesia in labour. The secondary aim was to determine an approximate international incidence of neuraxial infections and neurological complications secondary to neuraxial analgesia techniques in labour. MATERIALS AND METHODS Heads of Departments of Anaesthesiology were invited to complete an online questionnaire exploring antisepsis practices and complications of neuraxial catheterisation. Data from 151 institutions in 13 countries were collected over 11months. RESULTS Data were collected for an estimated 6008540 deliveries and 3770800 neuraxial catheterisations. The average annual birth rate per institution was 3979 births, with an average of 2497 neuraxial catheterizations (representing 62.8% of deliveries). Forty-nine percent of responders reported always wearing sterile gowns for the procedure, whereas 47.7% never wear gowns. Chlorhexidine was used by 88.1% of those surveyed, and 96.7% always wore facemasks. Thirty-four percent of institutions reported infectious complications over a 10-year period. Ninety neuraxial infections were estimated, giving an approximate incidence of 1:41898 catheterisations (2.39 infections per 100000 catheterisations). A total of 202 neurological complications were reported, with an approximate incidence of 1:18667 catheterisations (5.36 neurological complications per 100000 catheterisations). CONCLUSION The survey demonstrated marked variation in aseptic practice between both responding centres and countries. The incidence of infectious and neurological complications secondary to neuraxial catherisation in labour has been approximated.
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Affiliation(s)
- K Fayman
- Department of Anaesthesia, Campbelltown Hospital, Therry Road, Campbelltown, New South Wales 2560, Australia
| | - A Allan
- Department of Anaesthesia, Campbelltown Hospital, Therry Road, Campbelltown, New South Wales 2560, Australia
| | - C Hudson
- Department of Anaesthesia, Campbelltown Hospital, Therry Road, Campbelltown, New South Wales 2560, Australia
| | - M Logarta
- Department of Anaesthesia, Campbelltown Hospital, Therry Road, Campbelltown, New South Wales 2560, Australia.
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12
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Dean R, Brennan M, Ewers R, Hudson C, Daly JM, Baillie S, Eisler MC, Place EJ, Brearley J, Holmes M, Handel I, Shaw D, McLauchlan G, McBrearty A, Cripps P, Jones P, Smith R, Verheyen K. The challenge of teaching undergraduates evidence-based veterinary medicine. Vet Rec 2017; 181:298-299. [PMID: 28916694 DOI: 10.1136/vr.j3441] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
The Royal College of Veterinary Surgeons now lists 'How to evaluate evidence' as a day one competence for newly qualified vets. In this article, representatives from each of the veterinary schools in the UK discuss how the challenge of delivering and assessing the concepts of evidence-based veterinary medicine in a crowded undergraduate curriculum can be met.
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Affiliation(s)
- R Dean
- School of Veterinary Medicine and Science, University of Nottingham, Sutton Bonington Campus, Leicestershire LE12 5RD, UK
| | - M Brennan
- School of Veterinary Medicine and Science, University of Nottingham, Sutton Bonington Campus, Leicestershire LE12 5RD, UK
| | - R Ewers
- School of Veterinary Medicine and Science, University of Nottingham, Sutton Bonington Campus, Leicestershire LE12 5RD, UK
| | - C Hudson
- School of Veterinary Medicine and Science, University of Nottingham, Sutton Bonington Campus, Leicestershire LE12 5RD, UK
| | - J M Daly
- School of Veterinary Medicine and Science, University of Nottingham, Sutton Bonington Campus, Leicestershire LE12 5RD, UK
| | - S Baillie
- School of Veterinary Sciences, University of Bristol, Langford House, Langford, Bristol BS40 5DU, UK
| | - M C Eisler
- School of Veterinary Sciences, University of Bristol, Langford House, Langford, Bristol BS40 5DU, UK
| | - E J Place
- School of Veterinary Sciences, University of Bristol, Langford House, Langford, Bristol BS40 5DU, UK
| | - J Brearley
- Department of Veterinary Medicine, University of Cambridge, Cambridge CB3 0ES, UK
| | - M Holmes
- Department of Veterinary Medicine, University of Cambridge, Cambridge CB3 0ES, UK
| | - I Handel
- Royal (Dick) School of Veterinary Studies and The Roslin Institute, University of Edinburgh, Easter Bush Campus, Roslin, Midlothian EH25 9RG, UK
| | - D Shaw
- Royal (Dick) School of Veterinary Studies and The Roslin Institute, University of Edinburgh, Easter Bush Campus, Roslin, Midlothian EH25 9RG, UK
| | - G McLauchlan
- School of Veterinary Medicine, College of Medical, Veterinary and Life Sciences, University of Glasgow, Garscube Campus, Bearsden Road, Glasgow G61 1QH, UK
| | - A McBrearty
- School of Veterinary Medicine, College of Medical, Veterinary and Life Sciences, University of Glasgow, Garscube Campus, Bearsden Road, Glasgow G61 1QH, UK
| | - P Cripps
- School of Veterinary Science, University of Liverpool, Neston, Cheshire CH64 7TE, UK
| | - P Jones
- School of Veterinary Science, University of Liverpool, Neston, Cheshire CH64 7TE, UK
| | - R Smith
- School of Veterinary Science, University of Liverpool, Neston, Cheshire CH64 7TE, UK
| | - K Verheyen
- Royal Veterinary College, North Mymms, Hertfordshire AL9 7TA, UK
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Grimmig B, Daly L, Hudson C, Nash K, Bickford P. Astaxanthin attenuates neurotoxicity in a mouse model of Parkinson’s disease. FFHD 2017. [DOI: 10.31989/ffhd.v7i8.352] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Background: Astaxanthin (AXT) is a natural carotenoid with diverse biological activities. Although it is best known as a potent antioxidant, recent work suggests additional mechanisms of action that have the potential to oppose the ongoing pathophysiology of Parkinson’s disease (PD). For example, AXT has a putative role in modulating microglial activity and preserving mitochondrial function, thereby implicating this compound as a neuroprotective agent. Both oxidative stress and inflammation are involved in the progression of many neurodegenerative diseases. Therefore, we examined the efficacy for AXT to reduced neurotoxicity in a toxic model of PD in mice. Methods: In this study, we used a 4-week dietary supplementation of algae derived AXT to reduce 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP) induced dopaminergic cell death.Results: AXT treated mice were protected against the loss of tyrosine hydroxylase (TH) staining in the substantia nigra (SN) after MPTP exposure compared to the control diet. This effect of preserved TH immunoreactivity was also observed in the striatum. Furthermore, AXT administration was able to interrupt the neuroinflammatory process known to contribute to neurodegeneration in this model.Conclusions: We demonstrate that AXT neuroprotection was associated with attenuated microglial activation as indicated by reduced immunohistochemical detection of IBA-1 in the SN and striatum of AXT treated mice. Altogether, these studies suggest that AXT has neuroprotective property in the central nervous system against MPTP neurodegeneration.Keywords: Astaxanthin, Neuroprotection, Neurodegeneration, Neuroinflammation, Parkinson’s disease
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Cready CM, Hudson C, Dreyer K. Type of oral solid medication packaging and medication preparation time in nursing homes: A direct observation study. J Clin Pharm Ther 2017; 42:710-719. [DOI: 10.1111/jcpt.12567] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2017] [Accepted: 04/24/2017] [Indexed: 10/19/2022]
Affiliation(s)
- C. M. Cready
- Sociology; University of North Texas; Denton TX USA
| | - C. Hudson
- Sociology; University of North Texas; Denton TX USA
| | - K. Dreyer
- Public Administration; University of North Texas; Denton TX USA
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Khuu LA, Tayyari F, Sivak JM, Flanagan JG, Singer S, Brent MH, Huang D, Tan O, Hudson C. Aqueous humor endothelin-1 and total retinal blood flow in patients with non-proliferative diabetic retinopathy. Eye (Lond) 2017; 31:1443-1450. [PMID: 28548649 DOI: 10.1038/eye.2017.74] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2015] [Accepted: 03/14/2017] [Indexed: 12/16/2022] Open
Abstract
PurposeThe purpose of this study was to determine the association between aqueous ET-1 levels and total retinal blood flow (TRBF) in patients with non-insulin-dependent type 2 diabetes mellitus (T2DM) and early non-proliferative diabetic retinopathy (NPDR).Patients and methodsA total of 15 age-matched controls and 15 T2DM patients with NPDR were recruited into the study. Aqueous humor (~80-120 μl) was collected before cataract surgery to measure the levels of ET-1 using suspension multiplex array technology. Four weeks post surgery, six images were acquired to assess TRBF using the prototype RTVue Doppler FD-OCT (Optovue, Inc., Fremont, CA, USA) with a double circular scan protocol. At the same visit, forearm blood was collected to determine plasma glycosylated hemoglobin (A1c) levels.ResultsAqueous ET-1 was significantly elevated in the NPDR group compared with the control group (3.5±1.8 vs 2.2±0.8, P=0.02). TRBF was found to be significantly reduced in the NPDR group compared with the control group (34.5±9.1 vs 44.1±4.6 μl/min, P=0.002). TRBF and aqueous ET-1 were not correlated within the NPDR group (r=-0.24, P=0.22). In a multivariate analysis, high A1c was associated with reduced TRBF and aqueous ET-1 levels across control and NPDR groups (P<0.01).ConclusionAqueous ET-1 levels were increased while TRBF was reduced in patients with NPDR compared with the control group. Although not directly associated, the vasoconstrictory effects of ET-1 are consistent with a reduced TRBF observed in early DR. ET-1 dysregulation may contribute to a reduction in retinal blood flow during early DR.
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Affiliation(s)
- L-A Khuu
- Institute of Medical Science, University of Toronto, Toronto, ON, Canada.,Vision Science and Ophthalmology, Toronto Western Hospital, Toronto, ON, Canada
| | - F Tayyari
- School of Optometry and Vision Science, University of Waterloo, Waterloo, ON, Canada
| | - J M Sivak
- Institute of Medical Science, University of Toronto, Toronto, ON, Canada
| | - J G Flanagan
- Institute of Medical Science, University of Toronto, Toronto, ON, Canada.,Vision Science and Ophthalmology, Toronto Western Hospital, Toronto, ON, Canada.,School of Optometry and Vision Science, University of Waterloo, Waterloo, ON, Canada
| | - S Singer
- Vision Science and Ophthalmology, Toronto Western Hospital, Toronto, ON, Canada
| | - M H Brent
- Vision Science and Ophthalmology, Toronto Western Hospital, Toronto, ON, Canada
| | - D Huang
- Casey Eye Institute, Oregon Health and Science University, Portland, OR, USA
| | - O Tan
- Casey Eye Institute, Oregon Health and Science University, Portland, OR, USA
| | - C Hudson
- Institute of Medical Science, University of Toronto, Toronto, ON, Canada.,Vision Science and Ophthalmology, Toronto Western Hospital, Toronto, ON, Canada.,School of Optometry and Vision Science, University of Waterloo, Waterloo, ON, Canada
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Pandya L, Lynch C, Nekkanti S, Hundley A, Hudson C. 19: The incidence of transfusion and associated factors in pelvic reconstructive surgery: An analysis of the national surgery quality improvement program database. Am J Obstet Gynecol 2017. [DOI: 10.1016/j.ajog.2016.12.143] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Deschamps A, Denault A, Grocott H, de Medicis E, Buissières J, Hudson C, Seyed S, Seal D, Herd S, Lambert J. Cerebral oximetry monitoring to maintain NORMal Cerebral Oxygen SATuration (NORMOSAT during high-risk cardiac surgery: a randomized controlled feasibility trial. J Cardiothorac Vasc Anesth 2016. [DOI: 10.1053/j.jvca.2016.03.125] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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19
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Brismée JM, Yang S, Lambert ME, Chyu MC, Tsai P, Zhang Y, Han J, Hudson C, Chung E, Shen CL. Differences in musculoskeletal health due to gender in a rural multiethnic cohort: a Project FRONTIER study. BMC Musculoskelet Disord 2016; 17:181. [PMID: 27113571 PMCID: PMC4845308 DOI: 10.1186/s12891-016-1042-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/08/2015] [Accepted: 04/20/2016] [Indexed: 12/18/2022] Open
Abstract
Background Very few studies have investigated differences in musculoskeletal health due to gender in a large rural population. The aim of this study is to investigate factors affecting musculoskeletal health in terms of hand grip strength, musculoskeletal discomfort, and gait disturbance in a rural-dwelling, multi-ethnic cohort. Methods Data for 1117 participants (40 years and older, 70 % female) of an ongoing rural healthcare study, Project FRONTIER, were analyzed. Subjects with a history of neurological disease, stroke and movement disorder were excluded. Dominant hand grip strength was assessed by dynamometry. Gait disturbance including stiff, spastic, narrow-based, wide-based, unstable or shuffling gait was rated. Musculoskeletal discomfort was assessed by self-reported survey. Data were analyzed by linear, logistic regression and negative binomial regressions as appropriate. Demographic and socioeconomic factors were adjusted in the multiple variable analyses. Results In both genders, advanced age was a risk factor for weaker hand grip strength; arthritis was positively associated with musculoskeletal discomfort, and fair or poor health was significantly associated with increased risk of gait disturbance. Greater waist circumference was associated with greater musculoskeletal discomfort in males only. In females, advanced age is the risk factor for musculoskeletal discomfort as well as gait disturbance. Females with fair or poor health had weaker hand grip strength. Higher C-reactive protein and HbA1c levels were also positively associated with gait disturbance in females, but not in males. Conclusion This cross-sectional study demonstrates how gender affects hand grip strength, musculoskeletal discomfort, and gait in a rural-dwelling multi-ethnic cohort. Our results suggest that musculoskeletal health may need to be assessed differently between males and females.
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Affiliation(s)
- J M Brismée
- Center for Rehabilitation Research, Texas Tech University Health Sciences Center, Lubbock, TX, 79430, USA
| | - S Yang
- Department of Pathology, Texas Tech University Health Sciences Center, Lubbock, TX, 79430, USA
| | - M E Lambert
- F. Marie Hall Institute for Rural and Community Health Research, Texas Tech University Health Sciences Center, Lubbock, TX, 79430, USA
| | - M C Chyu
- Graduate Healthcare Engineering, Whitacre College of Engineering, Texas Tech University, Lubbock, TX, 79409, USA
| | - P Tsai
- Department of Public Health, Texas Tech University Health Sciences Center, Lubbock, TX, 79430, USA
| | - Y Zhang
- Department of Family and Community Medicine, Texas Tech University Health Sciences Center, Lubbock, TX, 79430, USA
| | - J Han
- Department of Nutrition and Food Hygiene, Xinjiang Medical University, Xinjiang, China
| | - C Hudson
- F. Marie Hall Institute for Rural and Community Health Research, Texas Tech University Health Sciences Center, Lubbock, TX, 79430, USA
| | - Eunhee Chung
- Department of Kinesiology and Sport Management, Texas Tech University, Lubbock, USA
| | - C L Shen
- Department of Pathology, Texas Tech University Health Sciences Center, Lubbock, TX, 79430, USA.
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Bedient C, Daneshmand S, Garner F, Aguirre M, Hudson C, Shapiro B. Factors associated with use of elective single embryo transfer and multiple pregnancy risk at fertility centers in the United States. Fertil Steril 2016. [DOI: 10.1016/j.fertnstert.2015.12.055] [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: 11/27/2022]
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21
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Hudson C. Candidate Retinal Biomarkers in CNS Neurodegenerative Disease. Acta Ophthalmol 2015. [DOI: 10.1111/j.1755-3768.2015.0245] [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: 11/30/2022]
Affiliation(s)
- C. Hudson
- School of Optometry; University of Waterloo; Waterloo Canada
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Shapiro B, Daneshmand S, Garner F, Aguirre M, Hudson C. Embryo-endometrium asynchrony may affect thawed embryo cycles using genetically screened blastocysts. Fertil Steril 2015. [DOI: 10.1016/j.fertnstert.2015.07.523] [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: 10/23/2022]
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Derkenne C, Hudson C, Bourgeois C, Lamblin A. Anesthésie locorégionale de la main en milieu périlleux. Ann Fr Med Urgence 2015. [DOI: 10.1007/s13341-015-0539-2] [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: 11/30/2022]
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McAllister C, Motriuk-Smith D, Seville R, Hudson C, Connior M, Robison H. Coccidia (Apicomplexa: Eimeriidae) of Three-toed Box Turtles, Terrapene carolina triunguis (Reptilia: Testudines), from Arkansas and Oklahoma. J Ark Acad Sci 2015; 69:74-77. [PMID: 27284580 PMCID: PMC4896401] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
We collected 50 three-toed box turtles (Terrapene carolina triunguis) from 9 counties of Arkansas and 4 counties of Oklahoma, and examined their feces for coccidial parasites. Nine of 24 (38%) turtles from Arkansas and 8 of 26 (31%) from Oklahoma were found to be passing oocysts of Eimeria ornata. This represents two new geographic distributional records for this coccidian. Measurements of individual isolates of E. ornata as well as morphological characteristics are provided with comparison to its original description and to another Terrapene coccidian, Eimeria carri. In addition, we noted an adelid pseudoparasite being passed by a single T. c. triunguis from Oklahoma that likely represents a parasite of arthropods.
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Affiliation(s)
- C.T. McAllister
- Science and Mathematics Division, Eastern Oklahoma State College, Idabel, OK 74745
| | - D. Motriuk-Smith
- Department of Zoology and Physiology, University of Wyoming-Casper, Casper, WY 82601
| | - R.S. Seville
- Department of Zoology and Physiology, University of Wyoming-Casper, Casper, WY 82601
| | - C. Hudson
- Department of Zoology and Physiology, University of Wyoming-Casper, Casper, WY 82601
| | - M.B. Connior
- Life Sciences, Northwest Arkansas Community College, Bentonville, AR 72712
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Roosenburg S, Laverman P, Joosten L, Cooper MS, Kolenc-Peitl PK, Foster JM, Hudson C, Leyton J, Burnet J, Oyen WJG, Blower PJ, Mather SJ, Boerman OC, Sosabowski JK. PET and SPECT imaging of a radiolabeled minigastrin analogue conjugated with DOTA, NOTA, and NODAGA and labeled with (64)Cu, (68)Ga, and (111)In. Mol Pharm 2014; 11:3930-7. [PMID: 24992368 DOI: 10.1021/mp500283k] [Citation(s) in RCA: 57] [Impact Index Per Article: 5.7] [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] [Indexed: 11/30/2022]
Abstract
Cholecystokinin-2 (CCK-2) receptors, overexpressed in cancer types such as small cell lung cancers (SCLC) and medullary thyroid carcinomas (MTC), may serve as targets for peptide receptor radionuclide imaging. A variety of CCK and gastrin analogues has been developed, but a major drawback is metabolic instability or high kidney uptake. The minigastrin analogue PP-F11 has previously been shown to be a promising peptide for imaging of CCK-2 receptor positive tumors and was therefore further evaluated. The peptide was conjugated with one of the macrocyclic chelators DOTA, NOTA, or NODAGA. The peptide conjugates were then radiolabeled with either (68)Ga, (64)Cu, or (111)In. All (radio)labeled compounds were evaluated in vitro (IC50) and in vivo (biodistribution and PET/CT and SPECT/CT imaging). IC50 values were in the low nanomolar range for all compounds (0.79-1.51 nM). In the biodistribution studies, (68)Ga- and (111)In-labeled peptides showed higher tumor-to-background ratios than the (64)Cu-labeled compounds. All tested radiolabeled compounds clearly visualized the CCK2 receptor positive tumor in PET or SPECT imaging. The chelator did not seem to affect in vivo behavior of the peptide for (111)In- and (68)Ga-labeled peptides. In contrast, the biodistribution of the (64)Cu-labeled peptides showed high uptake in the liver and in other organs, most likely caused by high blood levels, probably due to dissociation of (64)Cu from the chelator and subsequent transchelation to proteins. Based on the present study, (68)Ga-DOTA-PP-F11 might be a promising radiopharmaceutical for PET/CT imaging of CCK2 receptor expressing tumors such as MTC and SCLC. Clinical studies are warranted to investigate the potential of this tracer.
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Affiliation(s)
- S Roosenburg
- Department of Radiology and Nuclear Medicine, Radboud University Medical Center , 6500 HB Nijmegen, The Netherlands
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Abstract
BACKGROUND/AIMS To investigate the effect of increased CO2 levels on flicker defined stimuli. METHODS The sensitivity of two flicker defined tasks was measured in nine healthy, trained observers using the Flicker Defined Form (FDF) stimulus of the Heidelberg Edge Perimeter (HEP; Heidelberg Engineering) and Frequency Doubling Technology (FDT) stimulus of the Matrix perimeter (Carl Zeiss Meditec) during normoxia and 15% hypercapnia (end-tidal CO2 increased by 15% relative to baseline). HEP-FDF and Matrix-FDT sensitivities were analysed for the global field, superior and inferior hemifields and at specific matched eccentricities, using repeated measures analysis of variance. The main effect of hypercapnia on flicker sensitivity was analysed using regression models. RESULTS Higher flicker sensitivity outcomes with increasing CO2 values were found for HEP-FDF and Matrix-FDT with a statistically significant main effect for HEP-FDF global, superior and inferior hemifields (p<0.01 for all) as well as 6°, 18°, 12° and 24° eccentricities (p=0.03, 0.04, 0.01, 0.05, respectively). When comparing mean sensitivity values between normocapnia and hypercapnia conditions, no statistically significantly different results were found for HEP-FDF and Matrix-FDT (p>0.05). CONCLUSIONS As CO2 levels were increased in healthy young individuals, there was an associated increase in visual sensitivity that was only significant for HEP-FDF stimuli, highlighting the different mechanisms involved in processing each of HEP-FDF and Matrix-FDT stimuli. Mean visual sensitivity outcomes were found to be similar for normocapnia and hypercapnia suggesting that a capability to compensate for a mild and stable increase in systemic CO2 levels may exist.
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Affiliation(s)
- A M Shahidi
- Toronto Western Research Institute, University Health Network, Toronto, Ontario, Canada
| | - C Hudson
- Toronto Western Research Institute, University Health Network, Toronto, Ontario, Canada School of Optometry and Vision Science, University of Waterloo, Waterloo, Ontario, Canada
| | - S R Patel
- Toronto Western Research Institute, University Health Network, Toronto, Ontario, Canada
| | - J G Flanagan
- Toronto Western Research Institute, University Health Network, Toronto, Ontario, Canada School of Optometry and Vision Science, University of Waterloo, Waterloo, Ontario, Canada
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Shapiro B, Daneshmand S, Garner F, Aguirre M, Hudson C. The effect of inner cell mass size on the outcome of single-blastocyst transfers. Fertil Steril 2014. [DOI: 10.1016/j.fertnstert.2014.07.214] [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: 10/24/2022]
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Shapiro B, Daneshmand S, Garner F, Aguirre M, Hudson C. Frozen Embryo Transfer Following “Freeze All” Is a Superior Therapy to Another Fresh Transfer in Patients with Prior Fresh Embryo Implantation Failure. Fertil Steril 2014. [DOI: 10.1016/j.fertnstert.2013.11.047] [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: 11/26/2022]
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Saleem N, Saczkowski R, Hudson C, Ruel M, Rubens F, Chan V, Hendry P, Boodhwani M. Normothermia Is Associated With Reduced Kidney and Brain Injury During Cardiopulmonary Bypass. Can J Cardiol 2013. [DOI: 10.1016/j.cjca.2013.07.691] [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] Open
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Montoya L, Hudson C, Macdonald J, Labinaz M, Ruel M, McDonald B. Description of the Relationship Between Frailty and Intensive Care Morbidity Following Trans-Catheter Aortic Valve Implantation (TAVI). Can J Cardiol 2013. [DOI: 10.1016/j.cjca.2013.07.478] [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] Open
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Daneshmand S, Garner F, Aguirre M, Hudson C, Shapiro B. The earliest serum hCG measurement that correlates with IVF outcome is four days after blastocyst transfer in freeze-thaw cycles. Fertil Steril 2013. [DOI: 10.1016/j.fertnstert.2013.07.1008] [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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Shapiro B, Daneshmand S, Garner F, Aguirre M, Hudson C. hCG dose as low as 500 IU in combination with GnRH agonist trigger can be efficacious for fresh embryo transfer. Fertil Steril 2013. [DOI: 10.1016/j.fertnstert.2013.07.1104] [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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Shapiro B, Daneshmand S, Garner F, Aguirre M, Hudson C. Factors related to embryo-endometrium asynchrony in fresh IVF cycles increase in prevalence with maternal age. Fertil Steril 2013. [DOI: 10.1016/j.fertnstert.2013.07.1073] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Daneshmand S, Garner F, Aguirre M, Hudson C, Shapiro B. Pattern of pregnancy loss is determined by exposure to ovarian stimulation and pre-ovulatory progesterone. Fertil Steril 2013. [DOI: 10.1016/j.fertnstert.2013.07.697] [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: 11/30/2022]
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Shapiro B, Daneshmand S, Garner F, Aguirre M, Hudson C. Agonist trigger followed by cohort cryopreservation results in success rates similar to fresh oocyte donation cycles while virtually eliminating significant OHSS in high responders. Fertil Steril 2013. [DOI: 10.1016/j.fertnstert.2013.07.1448] [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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Shahidi A, Patel S, Flanagan J, Hudson C. Regional variation in human retinal vessel oxygen saturation. Exp Eye Res 2013; 113:143-7. [DOI: 10.1016/j.exer.2013.06.001] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2013] [Revised: 05/29/2013] [Accepted: 06/03/2013] [Indexed: 11/29/2022]
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Naik R, Bahadur G, Olivier F, Srikantharajah A, Mehta J, Joshi H, Shapiro B, Daneshmand S, Garner F, Aguirre M, Hudson C, Catt S, Lingham E, Lee W, Muthusamy Y, Kally C, Chen P, Pangestu M, Catt J, Temple-Smith P, Kailasam C, Gordon UD, Kobayashi M, Yoshida A, Tanigiwa S, Seida K, Suzuki H, Tanaka M, Ogata S, Matsu-ura M, Ogata H, Kajiwara A, Tokura Y, Matsumoto Y, Mizusawa Y, Okamoto E, Yamada S, Kokeguchi S, Shiotani M, Grassa LH, Marin SP, Barragan SA, Lorite JA, Campos FB, Garcia-Velasco JA. Session 61: Effects of interventions on embryo quality. Hum Reprod 2013. [DOI: 10.1093/humrep/det194] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Elmistekawy E, Rubens F, Hudson C, McDonald B, Ruel M, Lam K, Mesana TG, Boodhwani M. Preoperative anaemia is a risk factor for mortality and morbidity following aortic valve surgery. Eur J Cardiothorac Surg 2013; 44:1051-5; discussion 1055-6. [DOI: 10.1093/ejcts/ezt143] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Ind T, Iles R, Desouza K, Carter P, Lowe D, Shepherd J, Hudson C, Chard T. Serum placental-type alkaline-phosphatase levels in patients with epithelial ovarian-carcinoma. Int J Oncol 2012; 6:385-9. [PMID: 21556549 DOI: 10.3892/ijo.6.2.385] [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: 11/05/2022] Open
Abstract
Serum placental alkaline phosphatase (PLAP)-type immunoreactivity was measured in 190 women with epithelial ovarian malignancy, 27 women with borderline ovarian cancer and 334 control subjects with non-neoplastic or benign gynaecological disease. Smoking, ABO blood group and menopausal status affect serum concentrations of PLAP and results were corrected for these. Circulating levels were elevated in patients with cancer and increased with stage. Levels were unaltered in borderline ovarian disease. Two-year stage corrected survival analysis demonstrated a significant worsening of prognosis in patients with serum PLAP-type levels greater than the 100th centile for controls.
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Affiliation(s)
- T Ind
- UNIV LONDON ST BARTHOLOMEWS HOSP & MED COLL,DEPT REPROD PHYSIOL,LONDON EC1A 7BE,ENGLAND. UNIV LONDON ST BARTHOLOMEWS HOSP & MED COLL,DEPT GYNAECOL ONCOL,LONDON EC1A 7BE,ENGLAND. UNIV LONDON ST BARTHOLOMEWS HOSP & MED COLL,DEPT PATHOL,LONDON EC1A 7BE,ENGLAND
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Shapiro B, Daneshmand S, De Leon L, Garner F, Aguirre M, Hudson C. Ectopic pregnancy incidence is reduced following transfer of blastocysts derived from thawed bipronuclear oocytes when compared to fresh blastocyst transfer. Fertil Steril 2012. [DOI: 10.1016/j.fertnstert.2012.07.236] [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: 11/30/2022]
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Daneshmand S, Shapiro B, Garner F, Aguirre M, Hudson C. Twice-frozen embryos have implantation potential similar to once-frozen embryos. Fertil Steril 2012. [DOI: 10.1016/j.fertnstert.2012.07.471] [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: 10/28/2022]
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Shapiro B, Daneshmand S, Garner F, Aguirre M, Hudson C. Embryos transferred in freeze-thaw cycles are more likely to implant than morphologically equivalent embryos transferred in fresh cycles. Fertil Steril 2012. [DOI: 10.1016/j.fertnstert.2012.07.372] [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: 11/26/2022]
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López R, Lema G, González A, Carvajal C, Canessa R, Carrasco P, Lazo V, Hudson C, Gonzalez R, Frangini P. Plasma levels of potassium and magnessium after modified ultrafiltration in pediatric cardiac surgery with cardiopulmonary bypass. Perfusion 2011; 27:40-2. [DOI: 10.1177/0267659111424637] [Citation(s) in RCA: 2] [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] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Objective: Modified ultrafiltration (MUF) reduces some of the complications associated with cardiopulmonary bypass (CPB) in pediatric cardiac surgery. However, we have observed hypokalemia and hypomagnesemia in children when MUF is used. Such alterations may elicit severe arrhythmias in the postoperative period. To date, no studies have focused on the effects MUF may have in plasma levels of potassium (K) and magnesium (Mg). The objective of our study was to determine if there is any variation in plasma levels of K (plK) and Mg (plMg) after MUF in children undergoing cardiac surgery with CPB. Patients: Sixteen children scheduled for cardiac surgery with CBP and MUF were prospectively studied. Anesthetic, CPB and MUF management were standardized for all patients, the latter lasting for 10 minutes. Results: Plasma K average levels before and after MUF were 4.16 mmol/L and 3.58 mmol/L, respectively. The average plasma Mg levels before and after MUF were 4.82 mmol/L and 4.81 mmol/L, respectively. Conclusions: The plasma level of K is reduced by 13.7% after MUF (p<0.0001). The reduction in Mg at the same period of time was not statistically significant (p<0.970).
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Affiliation(s)
- R López
- Division of Anesthesiology, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - G Lema
- Division of Anesthesiology, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - A González
- Division of Anesthesiology, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - C Carvajal
- Division of Anesthesiology, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - R Canessa
- Division of Anesthesiology, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - P Carrasco
- Division of Anesthesiology, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - V Lazo
- Division of Anesthesiology, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - C Hudson
- Division of Anesthesiology, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - R Gonzalez
- Division of Cardiovascular Diseases, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - P Frangini
- Division of Pediatrics, Pontificia Universidad Católica de Chile, Santiago, Chile
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Elmistekawy E, Rouphael R, Rubens F, Hudson C, Donald BM, Boodhwani M. 103 Preoperative anemia is a risk factor for mortality and morbidity following aortic valve surgery. Can J Cardiol 2011. [DOI: 10.1016/j.cjca.2011.07.267] [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] Open
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Moulin J, Marszalek A, Gayet V, Blanchet V, Streuli I, Lafay M, Pont JC, Chapron C, De Ziegler D, Moolenaar LM, Verhoeve HR, van der Veen F, Hompes P, Mol BWJ, Savasi V, Oneta M, Elli M, Parilla B, Loareti A, Cetin I, Shapiro BS, Daneshmand ST, Garner FC, Aguirre M, Hudson C, Thomas S, Simsek Y, Celik O, Yilmaz E, Karaer A, Koc O, Aydin NE, Rodriguez S, Agudo D, Pacheco A, Garcia-Cerrudo E, Schneider J, Garcia-Velasco JA. SELECTED ORAL COMMUNICATION SESSION, SESSION 35: ENDOMETRIOSIS, Tuesday 5 July 2011 10:00 - 11:30. Hum Reprod 2011. [DOI: 10.1093/humrep/26.s1.35] [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: 11/12/2022] Open
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Shapiro B, Daneshmand S, Garner F, Aguirre M, Hudson C. Evidence of Impaired Endometrial Receptivity Following Controlled Ovarian Stimulation: a Prospective Randomized Trial in High Responders. Fertil Steril 2011. [DOI: 10.1016/j.fertnstert.2011.01.048] [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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Kurobe T, MacConnell E, Hudson C, McDowell TS, Mardones FO, Hedrick RP. Iridovirus infections among Missouri River sturgeon: initial characterization, transmission, and evidence for establishment of a carrier state. J Aquat Anim Health 2011; 23:9-18. [PMID: 21699132 DOI: 10.1080/08997659.2011.545697] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Iridovirus infections of the integument were associated with disease and mortality among hatchery-reared populations of juvenile pallid sturgeon Scaphirhynchus albus and shovelnose sturgeon S. platorynchus from the Missouri River. Virus-infected cells in the integument of fins and body were greatly enlarged, possessed pleomorphic and eccentric nuclei, and exhibited an amphophilic to eosinophilic staining of the cytoplasm in hematoxylin-and-eosin-stained sections. Virus particles found in the host cell cytoplasm were composed of an outer hexagonal capsid measuring 254 nm in diameter and surrounding a dense nucleoid. Despite numerous attempts, the virus could not be propagated on routine cell lines used in fish viral diagnostics or from established cell lines from white sturgeon Acipenser transmontanus, pallid sturgeon, or shovelnose sturgeon. Bath exposures of healthy juvenile pallid sturgeon to a crude extract or a 0.45-microm-filtered extract from the fins of infected fish resulted in transmission of the virus and mortality. At water temperatures of 15 degrees C, the first deaths occurred at approximately 1 month; mortality peaked between 50 and 60 d postexposure, after which surviving fish recovered. Presence of the virus was confirmed among dead and moribund pallid sturgeon by both histology and detection of viral DNA by polymerase chain reaction methods. Feeding of infected tissues and cohabitation with virus-infected shovelnose sturgeon also resulted in successful virus transmission to juvenile pallid sturgeon. Virus infections among experimentally exposed pallid sturgeon that recovered from clinical episodes persisted for at least 8.5 months, and these apparently healthy fish transmitted the virus and disease to juvenile pallid sturgeon by cohabitation. The newly described Missouri River sturgeon iridovirus (MRSIV) as found in pallid sturgeon and shovelnose sturgeon shares many properties with a group of iridoviruses associated with serious skin and gill infections in several species of sturgeon.
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Affiliation(s)
- T Kurobe
- Department of Medicine and Epidemiology, School of Veterinary Medicine, University of California, Davis, California 95616, USA
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Abstract
ABSTRACTA method has been developed to measure the stress in films which have been sputtered using a planar magnetron in a small-scale UHV chamber. The stress has been measured for diffent materials as a function of the sputtering gas pressure P and the substrate-target distance d. It is found that the stress in films of the same material deposited at different values of d is dependent only on the pressure-distance product (Pd), except at short (less than about 30mm) distances. The value of Pd required to produce a stress-free film is found to increase with the more extreme ratios between the atomic masses of the film material and the sputtering gas for the case of metals. However, the required Pd product is higher for the case of amorphous semiconductors. The stress in alloy films is also investigated.
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Shapiro BS, Daneshmand ST, Garner FC, Aguirre M, Hudson C, Thomas S, Alshalati J, Almog B, Shehata F, Paz E, Son WY, Tan SL, Tulandi T, Dong M, Liu F, Wang H, Huang H, Groeneveld E, Broeze KA, Lambers MJ, Haapsamo M, Dirckx K, Schoot BC, Salle B, Duvan CI, Schats R, Mol BWJ, Hompes PGA, Johnson S, Shaw R, Parkinson P, Perry P, Chen H, Han JL, Peng XD, Yan JM, Fuentes A, Jesam C, Kohen P, Galleguillos A, Torres A, Munoz A. Session 67: Endocrine and Immunologic Aspects of Early Pregnancy. Hum Reprod 2010. [DOI: 10.1093/humrep/de.25.s1.67] [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: 11/12/2022] Open
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Scialfa C, Ference J, Boone J, Tay R, Hudson C. Predicting Older Adults' Driving Difficulties Using the Roadwise Review. J Gerontol B Psychol Sci Soc Sci 2010; 65:434-7. [DOI: 10.1093/geronb/gbq032] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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