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Ahiadu BK, Ellis T, Graichen A, Kremer RB, Rusling JF. Quantitative detection of RAS and KKS peptides in COVID-19 patient serum by stable isotope dimethyl labeling LC-MS. Analyst 2023; 148:5926-5934. [PMID: 37850419 DOI: 10.1039/d3an00943b] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2023]
Abstract
Angiotensin and kinin metabolic pathways are reported to be altered by many diseases, including COVID-19. Monitoring levels of these peptide metabolites is important for understanding mechanisms of disease processes. In this paper, we report dimethyl labeling of amines in peptides by addition of formaldehyde to samples and deutero-formaldehyde to internal standards to generate nearly identical isotopic standards with 4 m/z units larger per amine group than the corresponding analyte. We apply this approach to rapid, multiplexed, absolute LC-MS/MS quantitation of renin angiotensin system (RAS) and kallikrein-kinin system (KKS) peptides in human blood serum. Limits of detection (LODs) were obtained in the low pg mL-1 range with 3 orders of magnitude dynamic ranges, appropriate for determinations of normal and elevated levels of the target peptides in blood serum and plasma. Accuracy is within ±15% at concentrations above the limit of quantitation, as validated by spike-recovery in serum samples. Applicability was demonstrated by measuring RAS and KKS peptides in serum from COVID-19 patients, but is extendable to any class of peptides or other small molecules bearing reactive -NH2 groups.
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Affiliation(s)
- Ben K Ahiadu
- Department of Chemistry, University of Connecticut, Storrs, Connecticut 06269, USA.
| | - Thomas Ellis
- Department of Chemistry, University of Connecticut, Storrs, Connecticut 06269, USA.
| | - Adam Graichen
- Department of Chemistry, University of Connecticut, Storrs, Connecticut 06269, USA.
| | - Richard B Kremer
- Department of Medicine, McGill University Health Centre, 1001 Decarie Blvd., Montreal, QC H4A, Canada
| | - James F Rusling
- Department of Chemistry, University of Connecticut, Storrs, Connecticut 06269, USA.
- Department of Surgery and Neag Cancer Center, UConn Health, Farmington, Connecticut 06232, USA
- School of Chemistry, National University of Ireland Galway, Galway, H91 TK33, Ireland
- Institute of Materials Science, University of Connecticut, 97 N. Eagleville Road, Storrs, CT 06269, USA
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Martin RL, Harris JD, Ellis T, Kollmorgen R. Comparison of the PROMIS and iHOT-12 in Determining Satisfaction Levels After Hip Arthroscopy for FAIS. Orthop J Sports Med 2023; 11:23259671231168887. [PMID: 37197035 PMCID: PMC10184234 DOI: 10.1177/23259671231168887] [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] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/21/2023] [Accepted: 01/30/2023] [Indexed: 05/19/2023] Open
Abstract
Background The Patient-Reported Outcomes Measurement Information System (PROMIS) has not been fully evaluated for outcomes assessment after hip arthroscopy to correct femoroacetabular impingement syndrome (FAIS). Purpose/Hypothesis The purpose of this study was to compare the accuracy of the PROMIS Physical Function (PF) and Pain Interference (PI) subscales with the 12-Item International Hip Outcome Tool (iHOT-12) to define patients with 3 unique substantial clinical benefit (SCB) scores-patients who reported ≥80%, ≥90%, and 100% satisfaction at 1 year after hip arthroscopy for FAIS. We hypothesized that the iHOT-12 would be more accurate than the PROMIS-PF and PROMIS-PI subscales in identifying these 3 patient groups. Study Design Cohort study (diagnosis); Level of evidence, 2. Methods We reviewed the records of patients who underwent hip arthroscopy for symptomatic FAIS at 3 centers from January 2019 through June 2021 and had 1-year clinical and radiographic follow-up data. Patients completed the iHOT-12, PROMIS-PF, and PROMIS-PI on initial assessment and at 1 year (±30 days) postoperatively. Postoperative satisfaction was reported on an 11-category scale with anchors defined as "0% satisfied" and "100% satisfied." Receiver operator characteristic analysis was performed to determine the absolute SCB values for the iHOT-12 and PROMIS subscales that would most accurately identify those patients who reported ≥80%, ≥90%, and 100% satisfaction. Area under the curve (AUC) values and 95% CIs for the 3 instruments were compared. Results Included were 163 patients (111 [68%] women and 52 [32%] men), with a mean age of 26.1 years. Corresponding absolute SCB scores for patients who reported ≥80%, ≥90%, and 100% satisfaction were as follows: iHOT-12, 68.4, 72.1, 74.7; PROMIS-PF, 45, 47.7, 49.9; and PROMIS-PI, 55.9, 52.4, 51.9. The AUC ranged between 0.67 and 0.82, with overlapping 95% CIs indicating a minimal difference in accuracy between the 3 instruments. Sensitivity and specificity values ranged between 0.61 and 0.82. Conclusion The PROMIS-PF and PROMIS-PI subscales were as accurate as the iHOT-12 in defining absolute SCB scores for patients reporting ≥80%, ≥90%, and 100% satisfaction at 1-year follow-up after hip arthroscopy for FAIS.
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Affiliation(s)
- RobRoy L. Martin
- Department of Physical Therapy, Rangos School of Health Sciences, Duquesne University, Pittsburgh, Pennsylvania, USA
- RobRoy L. Martin, PhD, PT, Department of Physical Therapy, Rangos School of Health Sciences, Duquesne University, 600 Forbes Avenue, Pittsburgh, PA 15282, USA ()
| | - Joshua D. Harris
- Department of Orthopaedic Surgery, Houston Methodist, Houston, Texas, USA
| | | | - Robert Kollmorgen
- Department of Orthopedic Surgery, UCSF Fresno, Fresno, California, USA
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Kollmorgen R, Umerani M, Gollon J, Fleming D, Lewis B, Harris J, Ellis T. Preoperative Pericapsular Nerve Group Block Results in Less Pain, Decreased Narcotic Use, and Quicker Discharge Time Than No Block in Patients Who Were Surgically Treated for Femoroacetabular Impingement Syndrome. Arthrosc Sports Med Rehabil 2022; 4:e1617-e1621. [PMID: 36312702 PMCID: PMC9596865 DOI: 10.1016/j.asmr.2022.06.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2022] [Accepted: 06/07/2022] [Indexed: 11/30/2022] Open
Abstract
Purpose Methods Results Conclusions Level of Evidence
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Affiliation(s)
- Robert Kollmorgen
- Department of Orthopaedic Surgery, University of California San Francisco, Fresno, Hip Preservation, Fresno, California
- Address correspondence to Robert Kollmorgen D.O., Department of Orthopaedic Surgery, University of California San Francisco, Fresno, Hip Preservation, 2823 Fresno St., Fresno, CA 93721.
| | - Maleehah Umerani
- Department of Orthopaedic Surgery, University of California San Francisco, Fresno, Hip Preservation, Fresno, California
| | | | - Derek Fleming
- Midwest Physician Anesthesia Services, Columbus, Ohio
| | - Brian Lewis
- Department of Orthopaedic Surgery, Duke University Medical Center, Durham, North Carolina
| | - Joshua Harris
- Houston Methodist Orthopedics & Sports Medicine, Outpatient Center, Houston, Texas, U.S.A
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Sloot L, Bae J, Baker L, O'Donnell K, Menard N, Porciuncula F, Choe D, Ellis T, Awad L, Walsh C. O 089 - A soft robotic exosuit assisting the paretic ankle in patients post-stroke: Effect on muscle activation during overground walking. Gait Posture 2022; 95:217-218. [PMID: 29983296 DOI: 10.1016/j.gaitpost.2018.06.124] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [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] [Indexed: 02/02/2023]
Abstract
This study compared overground walking with and without exosuit assistance in post-stroke patients. Exosuit-assisted walking was found to improve paretic propulsion and ground clearance during swing, two common gait deviations in stroke patients. No changes in leg muscle activity was found, motivating further study of the exosuit as a tool for gait training during stroke rehabilitation.
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Affiliation(s)
- L Sloot
- Harvard University, School of Engineering and Applied Sciences, Cambridge, USA.
| | - J Bae
- Harvard University, School of Engineering and Applied Sciences, Cambridge, USA
| | - L Baker
- Harvard University, School of Engineering and Applied Sciences, Cambridge, USA
| | - K O'Donnell
- Harvard University, School of Engineering and Applied Sciences, Cambridge, USA
| | - N Menard
- Harvard University, School of Engineering and Applied Sciences, Cambridge, USA
| | - F Porciuncula
- Harvard University, School of Engineering and Applied Sciences, Cambridge, USA
| | - D Choe
- Harvard University, School of Engineering and Applied Sciences, Cambridge, USA
| | - T Ellis
- Boston University, Department of Physical Therapy & Athletic Training, Boston, USA
| | - L Awad
- Boston University, Department of Physical Therapy & Athletic Training, Boston, USA
| | - C Walsh
- Boston University, Department of Physical Therapy & Athletic Training, Boston, USA
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Schnabel A, Nashawi M, Anderson C, Felsenstein S, Lamoudi M, Poole-Cowley J, Lindell E, Oates B, Fowlie P, Walsh J, Ellis T, Hahn G, Goldspink A, Martin N, Mahmood K, Hospach T, Lj M, Hedrich CM. TNF-inhibitors or bisphosphonates in chronic nonbacterial osteomyelitis? - Results of an international retrospective multicenter study. Clin Immunol 2022; 238:109018. [PMID: 35460903 DOI: 10.1016/j.clim.2022.109018] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2022] [Revised: 04/12/2022] [Accepted: 04/14/2022] [Indexed: 12/26/2022]
Abstract
Chronic nonbacterial osteomyelitis (CNO) can cause significant morbidity, including bone pain and damage. In the absence of clinical trials, treatments include non-steroidal anti-inflammatory drugs, corticosteroids, TNF-inhibitors (TNFi) and/or bisphosphonates. In a retrospective chart review in the United Kingdom and Germany, we investigated response to TNFi and/or pamidronate. Ninety-one patients were included, receiving pamidronate (n = 47), TNFi (n = 22) or both sequentially (n = 22). Patients with fatigue [p = 0.003] and/or arthritis [p = 0.002] were more frequently treated with TNFi than pamidronate. Both therapies were associated with clinical remission at 6 months, and reduction of bone lesions on MRI at 12 months. While not reaching statistical significance, pamidronate resulted in faster resolution of MRI lesions. Fewer flares were observed with TNFi. Failure to respond to pamidronate was associated with female sex [p = 0.027], more lesions on MRI [p = 0.01] and higher CRP levels [p = 0.03]. Randomized clinical trials are needed to confirm observations and generate evidence.
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Affiliation(s)
- A Schnabel
- Pädiatrische Rheumatologie, Universitätsklinikum Carl Gustav Carus, Dresden, Germany.
| | - M Nashawi
- Pädiatrische Rheumatologie, Klinikum Stuttgart, Germany; Department of Pediatrics, King Abdulaziz University, Jeddah, Saudi Arabia
| | - C Anderson
- Royal Hospital for Children and Young People, Edinburgh, United Kingdom
| | - S Felsenstein
- Department of Infectious Disease and Immunology, Alder Hey Children's NHS Foundation Trust, United Kingdom
| | - M Lamoudi
- Royal Hospital for Children and Young People, Edinburgh, United Kingdom
| | - J Poole-Cowley
- Royal Hospital for Sick Children, Glasgow, United Kingdom
| | - E Lindell
- University Hospital Crosshouse, Kilmarnock, United Kingdom
| | - B Oates
- University Hospital Crosshouse, Kilmarnock, United Kingdom
| | - P Fowlie
- Ninewells Hospital, Dundee, United Kingdom
| | - J Walsh
- Royal Hospital for Sick Children, Glasgow, United Kingdom
| | - T Ellis
- Pädiatrische Rheumatologie, Universitätsklinikum Carl Gustav Carus, Dresden, Germany
| | - G Hahn
- Department of Radiology, Universitätsklinikum Carl Gustav Carus, Dresden, Germany
| | - A Goldspink
- Raigmore Hospital, Inverness, United Kingdom
| | - N Martin
- Royal Hospital for Sick Children, Glasgow, United Kingdom
| | - K Mahmood
- Department of Rheumatology, Alder Hey Children's NHS Foundation Trust, Liverpool, United Kingdom
| | - T Hospach
- Pädiatrische Rheumatologie, Klinikum Stuttgart, Germany
| | - McCann Lj
- Department of Rheumatology, Alder Hey Children's NHS Foundation Trust, Liverpool, United Kingdom
| | - C M Hedrich
- Department of Rheumatology, Alder Hey Children's NHS Foundation Trust, Liverpool, United Kingdom; Department of Women's and Children's Health, Institute of Life Course and Medical Sciences, University of Liverpool, United Kingdom.
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Stentiford GD, Peeler EJ, Tyler CR, Bickley LK, Holt CC, Bass D, Turner AD, Baker-Austin C, Ellis T, Lowther JA, Posen PE, Bateman KS, Verner-Jeffreys DW, van Aerle R, Stone DM, Paley R, Trent A, Katsiadaki I, Higman WA, Maskrey BH, Devlin MJ, Lyons BP, Hartnell DM, Younger AD, Bersuder P, Warford L, Losada S, Clarke K, Hynes C, Dewar A, Greenhill B, Huk M, Franks J, Dal-Molin F, Hartnell RE. A seafood risk tool for assessing and mitigating chemical and pathogen hazards in the aquaculture supply chain. Nat Food 2022; 3:169-178. [PMID: 37117966 DOI: 10.1038/s43016-022-00465-3] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/16/2021] [Accepted: 01/19/2022] [Indexed: 04/30/2023]
Abstract
Intricate links between aquatic animals and their environment expose them to chemical and pathogenic hazards, which can disrupt seafood supply. Here we outline a risk schema for assessing potential impacts of chemical and microbial hazards on discrete subsectors of aquaculture-and control measures that may protect supply. As national governments develop strategies to achieve volumetric expansion in seafood production from aquaculture to meet increasing demand, we propose an urgent need for simultaneous focus on controlling those hazards that limit its production, harvesting, processing, trade and safe consumption. Policies aligning national and international water quality control measures for minimizing interaction with, and impact of, hazards on seafood supply will be critical as consumers increasingly rely on the aquaculture sector to supply safe, nutritious and healthy diets.
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Affiliation(s)
- G D Stentiford
- Weymouth Laboratory, Centre for Environment, Fisheries and Aquaculture Science (Cefas), Weymouth, UK.
- Centre for Sustainable Aquaculture Futures, University of Exeter, Exeter, UK.
| | - E J Peeler
- Weymouth Laboratory, Centre for Environment, Fisheries and Aquaculture Science (Cefas), Weymouth, UK
- Department of Epidemiology and Population Health, Institute of Infection and Global Health, University of Liverpool, Liverpool, UK
| | - C R Tyler
- Centre for Sustainable Aquaculture Futures, University of Exeter, Exeter, UK
- Biosciences, University of Exeter, Exeter, UK
| | - L K Bickley
- Centre for Sustainable Aquaculture Futures, University of Exeter, Exeter, UK
- Biosciences, University of Exeter, Exeter, UK
| | - C C Holt
- Department of Botany, University of British Columbia, Vancouver, British Columbia, Canada
| | - D Bass
- Weymouth Laboratory, Centre for Environment, Fisheries and Aquaculture Science (Cefas), Weymouth, UK
- Centre for Sustainable Aquaculture Futures, University of Exeter, Exeter, UK
| | - A D Turner
- Weymouth Laboratory, Centre for Environment, Fisheries and Aquaculture Science (Cefas), Weymouth, UK
- Centre for Sustainable Aquaculture Futures, University of Exeter, Exeter, UK
| | - C Baker-Austin
- Weymouth Laboratory, Centre for Environment, Fisheries and Aquaculture Science (Cefas), Weymouth, UK
- Centre for Sustainable Aquaculture Futures, University of Exeter, Exeter, UK
| | - T Ellis
- Weymouth Laboratory, Centre for Environment, Fisheries and Aquaculture Science (Cefas), Weymouth, UK
| | - J A Lowther
- Weymouth Laboratory, Centre for Environment, Fisheries and Aquaculture Science (Cefas), Weymouth, UK
| | - P E Posen
- Weymouth Laboratory, Centre for Environment, Fisheries and Aquaculture Science (Cefas), Weymouth, UK
| | - K S Bateman
- Weymouth Laboratory, Centre for Environment, Fisheries and Aquaculture Science (Cefas), Weymouth, UK
- Centre for Sustainable Aquaculture Futures, University of Exeter, Exeter, UK
| | - D W Verner-Jeffreys
- Weymouth Laboratory, Centre for Environment, Fisheries and Aquaculture Science (Cefas), Weymouth, UK
- Centre for Sustainable Aquaculture Futures, University of Exeter, Exeter, UK
| | - R van Aerle
- Weymouth Laboratory, Centre for Environment, Fisheries and Aquaculture Science (Cefas), Weymouth, UK
- Centre for Sustainable Aquaculture Futures, University of Exeter, Exeter, UK
| | - D M Stone
- Weymouth Laboratory, Centre for Environment, Fisheries and Aquaculture Science (Cefas), Weymouth, UK
| | - R Paley
- Weymouth Laboratory, Centre for Environment, Fisheries and Aquaculture Science (Cefas), Weymouth, UK
| | - A Trent
- Weymouth Laboratory, Centre for Environment, Fisheries and Aquaculture Science (Cefas), Weymouth, UK
| | - I Katsiadaki
- Weymouth Laboratory, Centre for Environment, Fisheries and Aquaculture Science (Cefas), Weymouth, UK
- Centre for Sustainable Aquaculture Futures, University of Exeter, Exeter, UK
| | - W A Higman
- Weymouth Laboratory, Centre for Environment, Fisheries and Aquaculture Science (Cefas), Weymouth, UK
| | - B H Maskrey
- Weymouth Laboratory, Centre for Environment, Fisheries and Aquaculture Science (Cefas), Weymouth, UK
| | - M J Devlin
- Lowestoft Laboratory, Centre for Environment, Fisheries and Aquaculture Science (Cefas), Lowestoft, UK
| | - B P Lyons
- Weymouth Laboratory, Centre for Environment, Fisheries and Aquaculture Science (Cefas), Weymouth, UK
| | - D M Hartnell
- Weymouth Laboratory, Centre for Environment, Fisheries and Aquaculture Science (Cefas), Weymouth, UK
| | - A D Younger
- Weymouth Laboratory, Centre for Environment, Fisheries and Aquaculture Science (Cefas), Weymouth, UK
| | - P Bersuder
- Lowestoft Laboratory, Centre for Environment, Fisheries and Aquaculture Science (Cefas), Lowestoft, UK
| | - L Warford
- Lowestoft Laboratory, Centre for Environment, Fisheries and Aquaculture Science (Cefas), Lowestoft, UK
| | - S Losada
- Lowestoft Laboratory, Centre for Environment, Fisheries and Aquaculture Science (Cefas), Lowestoft, UK
| | - K Clarke
- Lowestoft Laboratory, Centre for Environment, Fisheries and Aquaculture Science (Cefas), Lowestoft, UK
| | - C Hynes
- Lowestoft Laboratory, Centre for Environment, Fisheries and Aquaculture Science (Cefas), Lowestoft, UK
| | - A Dewar
- Lowestoft Laboratory, Centre for Environment, Fisheries and Aquaculture Science (Cefas), Lowestoft, UK
| | - B Greenhill
- Lowestoft Laboratory, Centre for Environment, Fisheries and Aquaculture Science (Cefas), Lowestoft, UK
| | - M Huk
- Lowestoft Laboratory, Centre for Environment, Fisheries and Aquaculture Science (Cefas), Lowestoft, UK
| | - J Franks
- Lowestoft Laboratory, Centre for Environment, Fisheries and Aquaculture Science (Cefas), Lowestoft, UK
| | - F Dal-Molin
- Lowestoft Laboratory, Centre for Environment, Fisheries and Aquaculture Science (Cefas), Lowestoft, UK
| | - R E Hartnell
- Weymouth Laboratory, Centre for Environment, Fisheries and Aquaculture Science (Cefas), Weymouth, UK.
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Blaker E, Ellis T. Assessment, causes and consequences of short opercula in laboratoryreared Atlantic salmon (Salmo salar). Anim Welf 2022. [DOI: 10.7120/09627286.31.1.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Opercular deformity is a common morphological abnormality of laboratory and other cultured fishes, observed in a wide variety of species but with an unclear aetiology. Following observations of short opercula in stocks of Atlantic salmon (Salmo salar) reared in our laboratory,
we developed a photographic key to score individual fish on a scale of 1 to 5. Inter-rater reliability was assessed as 'almost perfect'. This visual method is quick and simple to use, can be used to score live fish in situ in tanks as well as sampled fish, does not require sophisticated
equipment and provides quantitative information to investigate the aetiology of short opercula. Opercular size was scored for a cohort of in-house reared Atlantic salmon, in a time series of random samples of ≥ 30 fish (mean weights ranging from 0.8 to 299 g) over 14 months. Short opercula
were first recorded during the parr stage, prevalence and severity increased as the fish grew, and the deformity was asymmetrical, occurring predominantly on the left side. Therefore, among the many potential causal factors, nipping is suggested as the primary cause of short opercula within
our culture system, with asymmetry due to the clockwise current. We also present evidence that short opercula are associated with gill damage which supports this deformity being a welfare issue that merits assessment.
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Affiliation(s)
- E Blaker
- Centre for Environment, Fisheries and Aquaculture Science (Cefas), Weymouth Laboratory, Barrack Road, The Nothe, Weymouth, Dorset DT4 8UB, UK
| | - T Ellis
- Centre for Environment, Fisheries and Aquaculture Science (Cefas), Weymouth Laboratory, Barrack Road, The Nothe, Weymouth, Dorset DT4 8UB, UK
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Ellis T. Limiting Outer Space: Astroculture After Apollo ed. by Alexander C. T. Geppert, and: Militarizing Outer Space: Astroculture, Dystopia and the Cold War ed. by Alexander C. T. Geppert, Daniel Brandau, and Tilmann Siebeneichner (review). Technol Cult 2022; 63:1253-1256. [PMID: 36341652 DOI: 10.1353/tech.2022.0197] [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: 06/16/2023]
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Munsch M, Vajapey SP, Vasileff WK, Ellis T, DeWitt J, Ryan J. Use of continuous passive motion device after arthroscopic hip surgery decreases post-operative pain: A randomized controlled trial. J Clin Orthop Trauma 2021; 23:101646. [PMID: 34733606 PMCID: PMC8545677 DOI: 10.1016/j.jcot.2021.101646] [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: 02/03/2021] [Revised: 04/12/2021] [Accepted: 10/12/2021] [Indexed: 10/20/2022] Open
Abstract
BACKGROUND We sought to determine whether continuous passive motion (CPM) usage improves outcomes following arthroscopic hip surgery involving acetabular labral repair. Our hypothesis is that CPM usage reduces pain and pain medication use and improves quality of life in individuals who undergo hip arthroscopy. METHODS We created a randomized controlled trial consisting of 54 patients who underwent arthroscopic acetabular labral repair. Patients were randomized to two groups, one with CPM use post-operatively and one without. Primary outcomes measured were pain level, patient satisfaction, and quality of life. Parameters used to measure these outcomes were self-reported pain scores on Likert scale, frequency of analgesic medication use, and self-reported scores on Hip Outcome Score Activity of Daily Living (HOS ADL). These parameters were compared between the two randomized groups using t-test for statistical analysis. RESULTS There was no statistical difference between the treatment and control groups in terms of patient characteristics. There was no statistical difference between the two groups in terms of HOS ADL scores, although the patients in the control group demonstrated a trend toward higher HOS ADL scores. The patients in the CPM group had a statistically significant decrease in pain levels after surgery compared to patients in the control group. The total morphine equivalent dose consumed in the first two post-operative weeks was higher in the control group compared to the CPM group, although this difference was not statistically significant. CONCLUSIONS Use of CPM resulted in lower pain level scores in patients after hip arthroscopy. Although there is no statistical difference in quality of life or quantity of analgesics consumed post-operatively, patients who used CPM tended to have lower HOS ADL scores (which is desirable) and less consumption of pain medication. A study with a larger sample of patients might elucidate more differences between the two groups. LEVEL OF EVIDENCE II, therapeutic.
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Affiliation(s)
- Maria Munsch
- Department of Orthopaedics, The Ohio State University Wexner Medical Center, Columbus, OH, USA
| | - Sravya P. Vajapey
- Department of Orthopaedics, The Ohio State University Wexner Medical Center, Columbus, OH, USA
| | - W. Kelton Vasileff
- Department of Orthopaedics, The Ohio State University Wexner Medical Center, Columbus, OH, USA
| | | | - John DeWitt
- Department of Physical Therapy and Rehabilitation, The Ohio State University Wexner Medical Center, Columbus, OH, USA
| | - John Ryan
- Department of Orthopaedics, The Ohio State University Wexner Medical Center, Columbus, OH, USA,Corresponding author. Department of Orthopaedics, The Ohio State University Medical Center, Jameson Crane Sports Medicine Institute, 2835 Fred Taylor Drive, Columbus, OH, 43202, USA.
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Jonsson B, Ellis T, Mannenbach M, Cain M, Homme J. 312 Compliance With Head Injury Imaging Guidelines for Adolescent Trauma Patients: Difference Between Adult and Pediatric Trauma Teams. Ann Emerg Med 2021. [DOI: 10.1016/j.annemergmed.2021.09.326] [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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Abuown A, Ellis T, Miller J, Davidson R, Kachwala Q, Medeiros M, Mejia K, Manoraj S, Sidhu M, Whittington AM, Pattani S. COVID-19 vaccination intent among London healthcare workers. Occup Med (Lond) 2021; 71:211-214. [PMID: 34002797 PMCID: PMC8194640 DOI: 10.1093/occmed/kqab057] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
Background The 10-month timeline from conception to regulatory approval of the Pfizer–BioNTech vaccine against SARS-CoV-2 is unprecedented in modern medicine. However, the climate of the pandemic has also seen anti-vaccination sentiments flourish. Aims To determine the intent to accept COVID-19 vaccination among healthcare workers at a London Hospital Trust and examine variation in uptake between demographic groups. Methods We conducted a cross-sectional survey open to staff working at the trust. Staff rated on a five-point scale the likelihood of them accepting COVID-19 vaccination. Results We received 514 responses, representing 16% of the workforce. About 59% of staff intended to seek vaccination, 24% to reject and 17% were unsure. There was significantly reduced intended uptake in females, younger age groups, healthcare assistants, nurses, staff of black ethnic backgrounds and those who rejected influenza vaccination. Safety was the dominant concern. Conclusions Our study finds COVID-19 vaccinate hesitancy is prevalent among healthcare workers at a London Hospital Trust. It is particularly concerning that hesitancy was highest amongst groups most exposed to COVID-19 and most at risk of severe disease. Reasons behind disparities in uptake must be addressed to protect staff and prevent deepening inequalities within the healthcare workforce.
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Affiliation(s)
- A Abuown
- London North West University Healthcare, London, UK
| | - T Ellis
- Barts and the London, London, UK
| | - J Miller
- Royal Free London NHS Foundation Trust, London, UK
| | | | | | | | - K Mejia
- Imperial College London, London, UK
| | | | - M Sidhu
- Imperial College London, London, UK
| | | | - S Pattani
- London North West University Healthcare, London, UK
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Strachan J, Chen L, Ellis T, Masters A, Maschmeyer T. Influence of Crystal Disorder in MoS2 Cathodes for Secondary Hybrid Mg-Li Batteries. Aust J Chem 2021. [DOI: 10.1071/ch21187] [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: 11/23/2022]
Abstract
The full extent to which the electrochemical properties of MoS2 electrodes are influenced by their morphological characteristics, such as crystalline disorder, remains unclear. Here, we report that disorder introduced by ball-milling decreases the Faradaic component of cell capacity and leads to increasingly pseudo-capacitive behaviour. After high temperature annealing, a more battery-like character of the cell is restored, consistent with a decrease in disorder. These findings aid the optimisation of MoS2 electrodes, which show promise in several battery technologies.
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13
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Bath NM, Djamali A, Parajuli S, Mandelbrot D, Leverson G, Hidalgo L, Ellis T, Descourouez JL, Jorgenson MR, Hager D, Kaufman DB, Redfield RR. Induction and Donor Specific Antibodies in Low Immunologic Risk Kidney Transplant Recipients. Kidney360 2020; 1:1407-1418. [PMID: 35372884 DOI: 10.34067/kid.0000122020] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/13/2020] [Accepted: 10/01/2020] [Indexed: 12/20/2022]
Abstract
Background Optimal induction for patients without pretransplant donor-specific antibodies (DSAs) is poorly defined. The goal of this study was to compare the incidence of de novo DSA (dnDSA) and graft outcomes between induction therapies in patients with a negative virtual crossmatch (VXM). Methods A retrospective chart review was performed, identifying 782 patients with a negative VXM who underwent kidney transplantation at a single, high-volume institution between January 2013 and May 2017. Kaplan-Meier analysis was used to assess the incidence of dnDSA and allograft survival between induction therapies in this group. dnDSA is defined as the development of new post-transplant DSA, at any MFI level. Results Induction therapy included alemtuzumab (N=87, 11%), basiliximab (N=522, 67%), and anti-thymocyte globulin (ATG; N=173, 22%). One-year graft survival was similar between groups (alemtuzumab, 100%; basiliximab, 98%; ATG, 99%). Incidence of acute rejection at 1 year was <2% and not different between the three groups. Alemtuzumab was associated with the highest incidence of dnDSA at 14%, compared with 5% and 8% in basiliximab and ATG groups, respectively, at 1 year (P=0.009). In multivariate regression analyses, alemtuzumab retained its significant association with a dnDSA HR of 2.5 (95% CI, 1.51 to 4.25; P=0.0004). Conclusions In summary, alemtuzumab was associated with a higher rate of dnDSA development in patients with a negative VXM; however, this finding was not associated with rejection or graft failure.
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Affiliation(s)
- Natalie M Bath
- Division of Transplant, Department of Surgery, University of Wisconsin Hospital and Clinics, Madison, Wisconsin
| | - Arjang Djamali
- Division of Nephrology, Department of Medicine, University of Wisconsin Hospital and Clinics, Madison, Wisconsin
| | - Sandesh Parajuli
- Division of Nephrology, Department of Medicine, University of Wisconsin Hospital and Clinics, Madison, Wisconsin
| | - Didier Mandelbrot
- Division of Nephrology, Department of Medicine, University of Wisconsin Hospital and Clinics, Madison, Wisconsin
| | - Glen Leverson
- Department of Surgery, University of Wisconsin Hospital and Clinics, Madison, Wisconsin
| | - Luis Hidalgo
- Division of Transplant, Department of Surgery, University of Wisconsin Hospital and Clinics, Madison, Wisconsin
| | - Thomas Ellis
- Department of Pathology and Laboratory Medicine, University of Wisconsin Hospital and Clinics, Madison, Wisconsin
| | - Jillian L Descourouez
- Division of Transplant, Department of Surgery, University of Wisconsin Hospital and Clinics, Madison, Wisconsin
| | - Margaret R Jorgenson
- Division of Transplant, Department of Surgery, University of Wisconsin Hospital and Clinics, Madison, Wisconsin
| | - Dave Hager
- Division of Transplant, Department of Surgery, University of Wisconsin Hospital and Clinics, Madison, Wisconsin
| | - Dixon B Kaufman
- Division of Transplant, Department of Surgery, University of Wisconsin Hospital and Clinics, Madison, Wisconsin
| | - Robert R Redfield
- Division of Transplant, Department of Surgery, University of Wisconsin Hospital and Clinics, Madison, Wisconsin
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14
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Mozumder MRH, Michael HA, Mihajlov I, Khan MR, Knappett PSK, Bostick BC, Mailloux BJ, Ahmed KM, Choudhury I, Koffman T, Ellis T, Whaley-Martin K, San Pedro R, Slater G, Stute M, Schlosser P, van Geen A. Origin of Groundwater Arsenic in a Rural Pleistocene Aquifer in Bangladesh Depressurized by Distal Municipal Pumping. Water Resour Res 2020; 56:e2020WR027178. [PMID: 33958831 PMCID: PMC8099038 DOI: 10.1029/2020wr027178] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/19/2020] [Accepted: 04/30/2020] [Indexed: 05/26/2023]
Abstract
Across South Asia, millions of villagers have reduced their exposure to high-arsenic (As) groundwater by switching to low-As wells. Isotopic tracers and flow modeling are used in this study to understand the groundwater flow system of a semi-confined aquifer of Pleistocene (>10 kyr) age in Bangladesh that is generally low in As but has been perturbed by massive pumping at a distance of about 25 km for the municipal water supply of Dhaka. A 10- to 15-m-thick clay aquitard caps much of the intermediate aquifer (>40- to 90-m depth) in the 3-km2 study area, with some interruptions by younger channel sand deposits indicative of river scouring. Hydraulic heads in the intermediate aquifer below the clay-capped areas are 1-2 m lower than in the high-As shallow aquifer above the clay layer. In contrast, similar heads in the shallow and intermediate aquifer are observed where the clay layer is missing. The head distribution suggests a pattern of downward flow through interruptions in the aquitard and lateral advection from the sandy areas to the confined portion of the aquifer. The interpreted flow system is consistent with 3H-3He ages, stable isotope data, and groundwater flow modeling. Lateral flow could explain an association of elevated As with high methane concentrations within layers of gray sand below certain clay-capped portions of the Pleistocene aquifer. An influx of dissolved organic carbon from the clay layer itself leading to a reduction of initially orange sands has also likely contributed to the rise of As.
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Affiliation(s)
- M. R. H. Mozumder
- Lamont-Doherty Earth Observatory of Columbia University, Palisades, NY, USA
- Now at Gradient, Boston, MA, USA
| | - H. A. Michael
- Department of Earth Sciences, University of Delaware, Newark, DE, USA
| | - I. Mihajlov
- Lamont-Doherty Earth Observatory of Columbia University, Palisades, NY, USA
- Now at Geosyntec Consultants, Huntington Beach, CA, USA
| | - M. R. Khan
- Department of Geology, University of Dhaka, Dhaka, Bangladesh
| | - P. S. K. Knappett
- Geology & Geophysics, Texas A&M University, College Station, TX, USA
| | - B. C. Bostick
- Lamont-Doherty Earth Observatory of Columbia University, Palisades, NY, USA
| | - B. J. Mailloux
- Environmental Science, Barnard College, New York, NY, USA
| | - K. M. Ahmed
- Department of Geology, University of Dhaka, Dhaka, Bangladesh
| | - I. Choudhury
- Department of Geology, University of Dhaka, Dhaka, Bangladesh
| | - T. Koffman
- Lamont-Doherty Earth Observatory of Columbia University, Palisades, NY, USA
- Now at Land Resources and Environmental Sciences, Montana State University, Bozeman, MT, USA
| | - T. Ellis
- Lamont-Doherty Earth Observatory of Columbia University, Palisades, NY, USA
| | - K. Whaley-Martin
- Earth and Environmental Sciences, McMaster University, Hamilton, Ontario, Canada
- Now at Civil and Mineral Engineering Department, University of Toronto, Ontario, Canada
| | - R. San Pedro
- Earth and Environmental Sciences, McMaster University, Hamilton, Ontario, Canada
| | - G. Slater
- Earth and Environmental Sciences, McMaster University, Hamilton, Ontario, Canada
| | - M. Stute
- Lamont-Doherty Earth Observatory of Columbia University, Palisades, NY, USA
- Environmental Science, Barnard College, New York, NY, USA
| | - P. Schlosser
- Lamont-Doherty Earth Observatory of Columbia University, Palisades, NY, USA
- Now at Julie Ann Wrigley Global Institute of Sustainability, Arizona State University, Tempe, AZ, USA
| | - A. van Geen
- Lamont-Doherty Earth Observatory of Columbia University, Palisades, NY, USA
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15
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Dijke E, Ellis T, Larsen I, Rebeyka I, Freed D, Al-Aklabi M, Levings M, West L. Human Leukocyte Antigen (HLA) Class II Expression on Regulatory T Cells (Tregs) Isolated from Discarded Human Thymus is Induced by In Vitro Expansion Conditions. J Heart Lung Transplant 2020. [DOI: 10.1016/j.healun.2020.01.755] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022] Open
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16
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Gowers GOF, Chee SM, Bell D, Suckling L, Kern M, Tew D, McClymont DW, Ellis T. Improved betulinic acid biosynthesis using synthetic yeast chromosome recombination and semi-automated rapid LC-MS screening. Nat Commun 2020; 11:868. [PMID: 32054834 PMCID: PMC7018806 DOI: 10.1038/s41467-020-14708-z] [Citation(s) in RCA: 40] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2019] [Accepted: 01/24/2020] [Indexed: 02/08/2023] Open
Abstract
Synthetic biology, genome engineering and directed evolution offer innumerable tools to expedite engineering of strains for optimising biosynthetic pathways. One of the most radical is SCRaMbLE, a system of inducible in vivo deletion and rearrangement of synthetic yeast chromosomes, diversifying the genotype of millions of Saccharomyces cerevisiae cells in hours. SCRaMbLE can yield strains with improved biosynthetic phenotypes but is limited by screening capabilities. To address this bottleneck, we combine automated sample preparation, an ultra-fast 84-second LC-MS method, and barcoded nanopore sequencing to rapidly isolate and characterise the best performing strains. Here, we use SCRaMbLE to optimise yeast strains engineered to produce the triterpenoid betulinic acid. Our semi-automated workflow screens 1,000 colonies, identifying and sequencing 12 strains with between 2- to 7-fold improvement in betulinic acid titre. The broad applicability of this workflow to rapidly isolate improved strains from a variant library makes this a valuable tool for biotechnology.
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Affiliation(s)
- G.-O. F. Gowers
- 0000 0001 2113 8111grid.7445.2Imperial College Centre for Synthetic Biology, Imperial College London, London, SW7 2AZ UK ,0000 0001 2113 8111grid.7445.2Department of Bioengineering, Imperial College London, London, SW7 2AZ UK
| | - S. M. Chee
- 0000 0001 2113 8111grid.7445.2London Biofoundry, Imperial College London, London, SW7 2AZ UK ,0000 0001 2113 8111grid.7445.2SynbiCITE, Imperial College London, London, SW7 2AZ UK
| | - D. Bell
- 0000 0001 2113 8111grid.7445.2London Biofoundry, Imperial College London, London, SW7 2AZ UK ,0000 0001 2113 8111grid.7445.2SynbiCITE, Imperial College London, London, SW7 2AZ UK ,0000 0001 2113 8111grid.7445.2Structural and Synthetic Biology, Department of Infectious Disease, Imperial College London, London, SW7 2AZ UK
| | - L. Suckling
- 0000 0001 2113 8111grid.7445.2London Biofoundry, Imperial College London, London, SW7 2AZ UK ,0000 0001 2113 8111grid.7445.2SynbiCITE, Imperial College London, London, SW7 2AZ UK ,0000 0001 2113 8111grid.7445.2Structural and Synthetic Biology, Department of Infectious Disease, Imperial College London, London, SW7 2AZ UK
| | - M. Kern
- 0000 0001 2162 0389grid.418236.aGlaxoSmithKline, Stevenage, SG1 2NY UK
| | - D. Tew
- 0000 0001 2162 0389grid.418236.aGlaxoSmithKline, Stevenage, SG1 2NY UK
| | - D. W. McClymont
- 0000 0001 2113 8111grid.7445.2London Biofoundry, Imperial College London, London, SW7 2AZ UK ,0000 0001 2113 8111grid.7445.2SynbiCITE, Imperial College London, London, SW7 2AZ UK
| | - T. Ellis
- 0000 0001 2113 8111grid.7445.2Imperial College Centre for Synthetic Biology, Imperial College London, London, SW7 2AZ UK ,0000 0001 2113 8111grid.7445.2Department of Bioengineering, Imperial College London, London, SW7 2AZ UK
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17
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Thiergart T, Durán P, Ellis T, Vannier N, Garrido-Oter R, Kemen E, Roux F, Alonso-Blanco C, Ågren J, Schulze-Lefert P, Hacquard S. Root microbiota assembly and adaptive differentiation among European Arabidopsis populations. Nat Ecol Evol 2019; 4:122-131. [DOI: 10.1038/s41559-019-1063-3] [Citation(s) in RCA: 86] [Impact Index Per Article: 17.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2019] [Accepted: 11/08/2019] [Indexed: 11/09/2022]
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18
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Ellis T, Rimmer GSE, Parker SJ, Joiner C, Sebire M, Verner-Jeffreys DW, Lines J. In-Tank Underwater Cameras can Refine Monitoring of Laboratory Fish. Anim Welf 2019. [DOI: 10.7120/09627286.28.2.191] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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19
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Kollmorgen RC, Ellis T, Lewis BD, Harris JD. Achieving Post-Free Distraction in Hip Arthroscopy With a Pink Pad Patient Positioning Device Using Standard Hip Distraction Tables. Arthrosc Tech 2019; 8:e363-e368. [PMID: 31110937 PMCID: PMC6507458 DOI: 10.1016/j.eats.2018.11.013] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/28/2018] [Accepted: 11/12/2018] [Indexed: 02/03/2023] Open
Abstract
Iatrogenic pudendal nerve and groin complications have been reported to occur at rates up to 4.3%. While many of these complications are transient, the hip preservation community is in search of a safe postless distraction technique. Currently available postless distraction tables are expensive, require the surgeon to adopt a different technique, and have a high disposable fee. We present our technique for postless distraction using a standard table and a pink pad positioning device. Using our technique, we have demonstrated safe and cost-effective post-free distraction.
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Affiliation(s)
- Robert C. Kollmorgen
- Department of Orthopaedic Surgery, University of California San Francisco, Fresno, Hip Preservation, Fresno, California
- Address correspondence to Robert C. Kollmorgen, D.O., Department of Orthopaedic Surgery, University of California San Francisco, Fresno, Hip Preservation, 2823 Fresno St, Fresno, CA 93721, U.S.A.
| | - Thomas Ellis
- Hip Preservation, Orthopaedic One, Upper Arlington, Ohio, U.S.A
| | - Brian D. Lewis
- Department of Orthopaedic Surgery, Duke University Medical Center, Durham, North Carolina, U.S.A
| | - Joshua D. Harris
- Houston Methodist Orthopedics and Sports Medicine, Houston, Texas, U.S.A
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20
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Morrison S, Ellis T, Fillingham E, Song Y, Birtle A. Less to Hold – a Comparison of Bowel and Bladder Toxicities in Patients Undergoing Prostate Radiotherapy between those Treated with an Empty Bladder and those Following a Bladder Filling Protocol. Clin Oncol (R Coll Radiol) 2019. [DOI: 10.1016/j.clon.2018.11.013] [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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21
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Choudhury R, Nath B, Khan MR, Mahanta C, Ellis T, van Geen A. The Impact of Aquifer Flushing on Groundwater Arsenic Across a 35-km Transect Perpendicular to the Upper Brahmaputra River in Assam, India. Water Resour Res 2018; 54:8160-8173. [PMID: 30906078 PMCID: PMC6424526 DOI: 10.1029/2017wr022485] [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] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/27/2017] [Accepted: 07/24/2018] [Indexed: 05/27/2023]
Abstract
Well testing in the floodplain of the Brahmaputra River in Golaghat and Jorhat districts of Assam, India, shows that groundwater arsenic (As) concentrations increase with distance from the river. To establish the origin of this pattern, an additional 900 wells <60 m deep were tested for As and 9 sites were drilled along a 35-km transect perpendicular to the river. The field data show no relation between groundwater As concentrations ranging from <1 to 660 μg/L along the transect and (a) As concentrations of <1-5 mg/kg in cuttings of aquifer sand recovered while drilling or (b) the degree of reduction of iron oxides in these cuttings. The drilling indicates, however, a marked increase in the thickness of a clay layer capping the aquifer starting from <1-5 m near the river to over 60 m at the most distant site towards the base of the Naga foothills. Organic radiocarbon ages of 18-46 kyr obtained from all but one of 13 clay samples indicate pre-Holocene deposition of the underlying sands across the entire transect. Radiocarbon ages of dissolved inorganic carbon of 0.2, 4.7, and 17.8 kyr were measured in groundwater from 3 monitoring wells installed to 30-60 m depth at distances of 10, 20, and 40 km from the river, respectively. A conceptual groundwater flow model consistent with monitored heads and groundwater ages suggests that thick clay layers capping the aquifer further from the river inhibited flushing of the aquifer and, as a result, preserved higher As levels in groundwater.
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Affiliation(s)
- R Choudhury
- Department of Civil Engineering, Indian Institute of Technology, Guwahati 781039, Assam, India
- Now at Department of Geological Sciences, Gauhati University, Gauhati 781014, Assam, India
| | - B Nath
- Lamont-Doherty Earth Observatory of Columbia University, Palisades, NY 10964, USA
| | - M R Khan
- Department of Geology, University of Dhaka, Dhaka 1000, Bangladesh
| | - C Mahanta
- Department of Civil Engineering, Indian Institute of Technology, Guwahati 781039, Assam, India
| | - T Ellis
- Lamont-Doherty Earth Observatory of Columbia University, Palisades, NY 10964, USA
| | - A van Geen
- Lamont-Doherty Earth Observatory of Columbia University, Palisades, NY 10964, USA
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22
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Rajakumar PD, Gowers GOF, Suckling L, Foster A, Ellis T, Kitney RI, McClymont DW, Freemont PS. Rapid Prototyping Platform for Saccharomyces cerevisiae Using Computer-Aided Genetic Design Enabled by Parallel Software and Workcell Platform Development. SLAS Technol 2018; 24:291-297. [DOI: 10.1177/2472630318798304] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Biofoundries have enabled the ability to automate the construction of genetic constructs using computer-aided design. In this study, we have developed the methodology required to abstract and automate the construction of yeast-compatible designs. We demonstrate the use of our in-house software tool, AMOS, to coordinate with design software, JMP, and robotic liquid handling platforms to successfully manage the construction of a library of 88 yeast expression plasmids. In this proof-of-principle study, we used three fluorescent genes as proxy for three enzyme coding sequences. Our platform has been designed to quickly iterate around a design cycle of four protein coding sequences per plasmid, with larger numbers possible with multiplexed genome integrations in Saccharomyces cerevisiae. This work highlights how developing scalable new biotechnology applications requires a close integration between software development, liquid handling robotics, and protocol development.
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Affiliation(s)
| | - G-O. F. Gowers
- Imperial College Centre for Synthetic Biology, Imperial College London, London, UK
- Department of Bioengineering, Imperial College London, London, UK
| | - L. Suckling
- The London DNA Foundry, Imperial College London, London, UK
| | - A. Foster
- The London DNA Foundry, Imperial College London, London, UK
| | - T. Ellis
- Imperial College Centre for Synthetic Biology, Imperial College London, London, UK
- Department of Bioengineering, Imperial College London, London, UK
| | - R. I. Kitney
- The London DNA Foundry, Imperial College London, London, UK
- Department of Bioengineering, Imperial College London, London, UK
| | | | - P. S. Freemont
- The London DNA Foundry, Imperial College London, London, UK
- Section of Structural Biology, Department of Medicine, Imperial College London, London, UK
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23
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Gavat O, Nguyet Trinh TM, Moulin E, Ellis T, Maaloum M, Buhler E, Fleith G, Nierengarten JF, Giuseppone N. 3D supramolecular self-assembly of [60]fullerene hexaadducts decorated with triarylamine molecules. Chem Commun (Camb) 2018; 54:7657-7660. [PMID: 29932182 DOI: 10.1039/c8cc04079f] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
A clickable fullerene hexa-adduct scaffold has been functionalized with twelve triarylamine subunits. The light-triggered self-assembly of this molecular unit leads to 3D honeycomb-like structures with inner pores of around 10 nm diameter. Multiple grafting of triarylamine subunits onto a hard-core C60 unit increases the dimensionality of the self-assembly process by reticulating the 1D nanowires typically obtained from the supramolecular polymerization of triarylamine monomers.
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Affiliation(s)
- Odile Gavat
- SAMS Research Group, Institut Charles Sadron, CNRS, University of Strasbourg, 23 rue du Loess, 67034 Strasbourg Cedex 2, BP 84087, France.
| | - Thi Minh Nguyet Trinh
- Laboratoire de Chimie des Matériaux Moléculaires, Université de Strasbourg et CNRS (LIMA - UMR 7042), Ecole Européenne de Chimie, Matériaux et Polymères (ECPM), 25 rue Becquerel, 67087 Strasbourg Cedex 2, France.
| | - Emilie Moulin
- SAMS Research Group, Institut Charles Sadron, CNRS, University of Strasbourg, 23 rue du Loess, 67034 Strasbourg Cedex 2, BP 84087, France.
| | - Thomas Ellis
- SAMS Research Group, Institut Charles Sadron, CNRS, University of Strasbourg, 23 rue du Loess, 67034 Strasbourg Cedex 2, BP 84087, France.
| | - Mounir Maaloum
- SAMS Research Group, Institut Charles Sadron, CNRS, University of Strasbourg, 23 rue du Loess, 67034 Strasbourg Cedex 2, BP 84087, France.
| | - Eric Buhler
- Matière et Systèmes Complexes (MSC) Laboratory, UMR CNRS 7057, Sorbonne Paris Cité, University of Paris Diderot-Paris VII, 75205 Paris Cedex 13, France
| | - Guillaume Fleith
- SAMS Research Group, Institut Charles Sadron, CNRS, University of Strasbourg, 23 rue du Loess, 67034 Strasbourg Cedex 2, BP 84087, France.
| | - Jean-François Nierengarten
- Laboratoire de Chimie des Matériaux Moléculaires, Université de Strasbourg et CNRS (LIMA - UMR 7042), Ecole Européenne de Chimie, Matériaux et Polymères (ECPM), 25 rue Becquerel, 67087 Strasbourg Cedex 2, France.
| | - Nicolas Giuseppone
- SAMS Research Group, Institut Charles Sadron, CNRS, University of Strasbourg, 23 rue du Loess, 67034 Strasbourg Cedex 2, BP 84087, France.
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24
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Blount BA, Gowers GOF, Ho JCH, Ledesma-Amaro R, Jovicevic D, McKiernan RM, Xie ZX, Li BZ, Yuan YJ, Ellis T. Rapid host strain improvement by in vivo rearrangement of a synthetic yeast chromosome. Nat Commun 2018; 9:1932. [PMID: 29789540 PMCID: PMC5964169 DOI: 10.1038/s41467-018-03143-w] [Citation(s) in RCA: 76] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2017] [Accepted: 01/23/2018] [Indexed: 11/21/2022] Open
Abstract
Synthetic biology tools, such as modular parts and combinatorial DNA assembly, are routinely used to optimise the productivity of heterologous metabolic pathways for biosynthesis or substrate utilisation, yet it is well established that host strain background is just as important for determining productivity. Here we report that in vivo combinatorial genomic rearrangement of Saccharomyces cerevisiae yeast with a synthetic chromosome V can rapidly generate new, improved host strains with genetic backgrounds favourable to diverse heterologous pathways, including those for violacein and penicillin biosynthesis and for xylose utilisation. We show how the modular rearrangement of synthetic chromosomes by SCRaMbLE can be easily determined using long-read nanopore sequencing and we explore experimental conditions that optimise diversification and screening. This synthetic genome approach to metabolic engineering provides productivity improvements in a fast, simple and accessible way, making it a valuable addition to existing strain improvement techniques. The Sc2.0 project has built the Synthetic Chromosome Rearrangement and Modification by LoxP-mediated Evolution (SCRaMbLE) system into their synthetic chromosomes. Here the authors use SCRaMbLE to rapidly develop, diversify and screen strains for diverse production and growth characteristics.
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Affiliation(s)
- B A Blount
- Imperial College Centre for Synthetic Biology, Imperial College London, London, SW7 2AZ, UK.,Department of Bioengineering, Imperial College London, London, SW7 2AZ, UK
| | - G-O F Gowers
- Imperial College Centre for Synthetic Biology, Imperial College London, London, SW7 2AZ, UK.,Department of Bioengineering, Imperial College London, London, SW7 2AZ, UK
| | - J C H Ho
- Imperial College Centre for Synthetic Biology, Imperial College London, London, SW7 2AZ, UK.,Department of Life Sciences, Imperial College London, London, SW7 2AZ, UK
| | - R Ledesma-Amaro
- Imperial College Centre for Synthetic Biology, Imperial College London, London, SW7 2AZ, UK.,Department of Bioengineering, Imperial College London, London, SW7 2AZ, UK
| | - D Jovicevic
- Imperial College Centre for Synthetic Biology, Imperial College London, London, SW7 2AZ, UK.,Department of Bioengineering, Imperial College London, London, SW7 2AZ, UK
| | - R M McKiernan
- Imperial College Centre for Synthetic Biology, Imperial College London, London, SW7 2AZ, UK.,Department of Life Sciences, Imperial College London, London, SW7 2AZ, UK
| | - Z X Xie
- Key Laboratory of Systems Bioengineering (Ministry of Education), School of Chemical Engineering and Technology, Tianjin University, 300072, Tianjin, PR China.,SynBio Research Platform, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin University, 300072, Tianjin, PR China
| | - B Z Li
- Key Laboratory of Systems Bioengineering (Ministry of Education), School of Chemical Engineering and Technology, Tianjin University, 300072, Tianjin, PR China.,SynBio Research Platform, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin University, 300072, Tianjin, PR China
| | - Y J Yuan
- Key Laboratory of Systems Bioengineering (Ministry of Education), School of Chemical Engineering and Technology, Tianjin University, 300072, Tianjin, PR China.,SynBio Research Platform, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin University, 300072, Tianjin, PR China
| | - T Ellis
- Imperial College Centre for Synthetic Biology, Imperial College London, London, SW7 2AZ, UK. .,Department of Bioengineering, Imperial College London, London, SW7 2AZ, UK.
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Stoicea N, Moran K, Mahmoud AR, Glassman A, Ellis T, Ryan J, Granger J, Joseph N, Salon N, Ackermann W, Rogers B, Niermeyer W, Bergese SD. Tranexamic acid use during total hip arthroplasty: A single center retrospective analysis. Medicine (Baltimore) 2018; 97:e10720. [PMID: 29794747 PMCID: PMC6392984 DOI: 10.1097/md.0000000000010720] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Tranexamic acid (TXA) is an antifibrinolytic agent that has shown promise in reducing blood loss during total hip arthroplasty (THA). Several studies have reported side effects of high-dose TXA administration, including myocardial infarction (MI), thromboembolic events, and seizures. These possible side effects have prevented the widespread adoption of TXA in the surgical community. METHODS We conducted a retrospective chart review of 564 primary and revision THAs performed at a single academic center. Surgical patients received either no TXA or 1 g IV TXA at the beginning of surgery followed by a second bolus just before the surgical wound closure, at the surgeon's discretion. We analyzed differences in hemoglobin (Hb), hematocrit (Hct), estimated blood loss (EBL), and adverse events in patients receiving TXA versus patients not receiving TXA up to 2 days following surgery. RESULTS Significantly higher Hb and Hct values were found across all time points among patients undergoing primary posterior or revision THA who had received TXA. In addition, transfusion rates were significantly decreased in both primary posterior THAs and revision THAs when TXA was administered. Patients who received TXA experienced significantly fewer adverse events than those who did not for all surgery types. CONCLUSION Administration of low-dose intravenous (IV) and intra-articular (IA) TXA does not appear to increase rates of adverse events and may be effective in minimizing blood loss, as reflected by Hb and Hct values following THA.
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Affiliation(s)
| | | | - Abdel-Rasoul Mahmoud
- Center for Biostatistics, Department of Biomedical Informatics, The Ohio State University, Columbus, OH
| | - Andrew Glassman
- Department of Orthopaedics, The Ohio State University Wexner Medical Center, Columbus
| | | | - John Ryan
- Department of Orthopaedics, The Ohio State University Wexner Medical Center, Columbus
| | - Jeffrey Granger
- Department of Orthopaedics, The Ohio State University Wexner Medical Center, Columbus
| | | | - Nathan Salon
- Weinberg College of Arts and Sciences, Northwestern University, Evanston, IL
| | | | | | | | - Sergio D. Bergese
- Department of Anesthesiology
- Department of Neurological Surgery, The Ohio State University Wexner Medical Center, Columbus, OH
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Affiliation(s)
- C Johnson
- Medical College of Wisconsin, Milwaukee, WI
| | - T Ellis
- University of Wisconsin-Madison-Pathology and Lab Medicine, Milwaukee, WI
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Feng R, Maley JM, Schatte G, Hoffmeyer RE, Brink KS, Ellis T, Brinkman D, Sammynaiken R. Chemical and Structural Information from the Enamel of a Troodon Tooth Leading to an Understanding of Diet and Environment. Appl Spectrosc 2016; 70:1883-1890. [PMID: 27324425 DOI: 10.1177/0003702816653123] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/21/2015] [Accepted: 03/22/2016] [Indexed: 06/06/2023]
Abstract
Synchrotron micro X-ray fluorescence (XRF) spectroscopy with two-dimensional element mapping, micro X-ray diffraction (XRD), electron spin resonance spectroscopy (ESR) and atomic force microscopy (AFM) were used to investigate the chemical and structural nature of the enamel of a tooth from Troodon, a small theropod dinosaur. These methods show that the crystallites in the Troodon tooth are submicron-sized carbonated calcium hydroxyapatite, which are semi-randomly oriented with a preferred orientation of (002) towards the surface of the tooth. Transition metal ions are distributed in the voids between crystallite clusters. Comparison of the ESR spectra indicates that the Troodon tooth had less exposure to UV than a fossilized crocodile tooth.
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Affiliation(s)
| | - Jason M Maley
- Saskatchewan Structural Sciences Centre, University of Saskatchewan, Canada
| | - Gabriele Schatte
- Saskatchewan Structural Sciences Centre, University of Saskatchewan, Canada
| | - Ruth E Hoffmeyer
- Saskatchewan Structural Sciences Centre, University of Saskatchewan, Canada
| | - Kirstin S Brink
- Department of Biology, University of Toronto at Mississauga, Canada
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Choudhury I, Ahmed KM, Hasan M, Mozumder MRH, Knappett PSK, Ellis T, van Geen A. Evidence for Elevated Levels of Arsenic in Public Wells of Bangladesh Due To Improper Installation. Ground Water 2016; 54:871-877. [PMID: 27015264 PMCID: PMC5035712 DOI: 10.1111/gwat.12417] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/20/2015] [Accepted: 02/16/2016] [Indexed: 05/22/2023]
Abstract
One of the mainstays of mitigation to reduce the exposure of the rural population of Bangladesh to arsenic (As) from private, mostly <90-m deep wells over the past 15 years has been the installation of over 300,000 deeper community wells. A comprehensive testing campaign previously conducted across a 180 km2 of area of Bangladesh identified 9 out of total of 927 wells >90 m deep that contained >50 µg/L arsenic. We show here that for five of these nine wells, conductivity profiles obtained after spiking the well bore with salt indicate a shallow leak that could explain the high As in the well water. In two of the five leaky wells, the presence of additional screens at the depth of the leak was documented with a downhole camera. The downhole camera did not detect anomalies in the construction of the remaining three leaky wells or in the four wells that did not leak. The four wells that did not leak were all >150-m deep and located in two villages separated by less than 500 m. Excluding these two villages and a handful of leaky wells, the results indicate an aquifer that is consistently low in As over a sizeable area at depths >90 m. Isolated cases of public wells that are elevated in As that have been reported elsewhere in Bangladesh may therefore reflect improper installation rather than actual contamination of the deep aquifer.
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Affiliation(s)
- I Choudhury
- Department of Geology, University of Dhaka, Nilkhet Rd, Dhaka, 1000, Bangladesh
| | - K M Ahmed
- Department of Geology, University of Dhaka, Nilkhet Rd, Dhaka, 1000, Bangladesh
| | - M Hasan
- Department of Geology, University of Dhaka, Nilkhet Rd, Dhaka, 1000, Bangladesh
| | - M R H Mozumder
- Lamont-Doherty Earth Observatory, Columbia University, 61 Route 9w, Palisades, NY, 10964
| | - P S K Knappett
- Department of Geology and Geophysics, Texas A&M University, 400 Bizzell St., College Station, TX, 77843
| | - T Ellis
- Lamont-Doherty Earth Observatory, Columbia University, 61 Route 9w, Palisades, NY, 10964
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Pontiff M, Ithurburn MP, Ellis T, Cenkus K, Stasi SD. PRE- AND POST-OPERATIVE SELF-REPORTED FUNCTION AND QUALITY OF LIFE IN WOMEN WITH AND WITHOUT GENERALIZED JOINT LAXITY UNDERGOING HIP ARTHROSCOPY FOR FEMOROACETABULAR IMPINGEMENT. Int J Sports Phys Ther 2016; 11:378-387. [PMID: 27274424 PMCID: PMC4886806] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/06/2023] Open
Abstract
BACKGROUND Generalized joint laxity is more prevalent in women than men and may lead to poorer post-operative outcomes in select orthopedic populations. There are no studies examining peri-operative function in patients with generalized joint laxity (GJL) and femoroacetabular impingement (FAI). PURPOSE The purpose of this study was to determine the difference in perceived function and quality of life as measured by the Hip Outcome Score ADL subscale (HOS-ADL), International Hip Outcomes Tool (iHOT-33) and the Short Form 12-Item Health Survey (SF-12) in women with and without GJL prior to and six months after undergoing hip arthroscopy for FAI. STUDY DESIGN Cohort Study. METHODS Peri-operative data were collected from women with FAI from November 2011-September 2014. Lax subjects were women with laxity scores ≥4/9 on the Beighton and Horan Joint Mobility Index; Nonlax subjects were women with laxity scores <4/9. Functional outcomes were evaluated using the HOS-ADL, iHOT-33, PCS-12, and the MCS-12 pre-operatively and at 6 months post-operatively. Change scores (post-score - pre-score) were calculated for each outcome measure and compared between groups, along with pre-operative and post-operative means, using Mann-Whitney U tests. RESULTS 166 women met the inclusion criteria: Nonlax (n = 131), Lax (n = 35). There were no statistically significant differences between groups in pre-operative functional outcomes (all p > .05). Additionally, there were no statistically significant differences between groups in post-operative means or change scores, respectively, for HOS-ADL (p = .696, .358), iHOT-33 (p = .550, .705), PCS-12 (p = .713, .191), and MCS-12 (p = .751, .082). Laxity score was not associated with any post-operative functional outcome score or change score (all p > .05). CONCLUSION Women with and without generalized joint laxity do not appear to report differences in hip function in the 6-month peri-operative period before and after hip arthroscopy for FAI. LEVEL OF EVIDENCE 3.
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Affiliation(s)
| | | | | | - Kathleen Cenkus
- The Ohio State University, Wexner Medical Center, Columbus, OH, USA
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Allana S, Liou J, Jacobs E, Ellis T, Rahko P, Akhter S, Dhingra R. Does Left Ventricular Assist Device Mechanics Impact Pre Cardiac Transplant Allosensitization and Post-Transplant Survival? J Heart Lung Transplant 2016. [DOI: 10.1016/j.healun.2016.01.431] [Citation(s) in RCA: 2] [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: 11/25/2022] Open
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Dhingra R, Yu M, Johnson M, Lozonschi L, Kohmoto T, Akhter S, Ellis T. Pre-Transplant Donor Specific Antibody Levels Using Single Antigen Bead Assay and Long-Term Survival Post Heart Transplant. J Heart Lung Transplant 2016. [DOI: 10.1016/j.healun.2016.01.113] [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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Licsandru ED, Schneider S, Tingry S, Ellis T, Moulin E, Maaloum M, Lehn JM, Barboiu M, Giuseppone N. Self-assembly of supramolecular triarylamine nanowires in mesoporous silica and biocompatible electrodes thereof. Nanoscale 2016; 8:5605-5611. [PMID: 26892311 DOI: 10.1039/c5nr06977g] [Citation(s) in RCA: 5] [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: 06/05/2023]
Abstract
Biocompatible silica-based mesoporous materials, which present high surface areas combined with uniform distribution of nanopores, can be organized in functional nanopatterns for a number of applications. However, silica is by essence an electrically insulating material which precludes applications for electro-chemical devices. The formation of hybrid electroactive silica nanostructures is thus expected to be of great interest for the design of biocompatible conducting materials such as bioelectrodes. Here we show that we can grow supramolecular stacks of triarylamine molecules in the confined space of oriented mesopores of a silica nanolayer covering a gold electrode. This addressable bottom-up construction is triggered from solution simply by light irradiation. The resulting self-assembled nanowires act as highly conducting electronic pathways crossing the silica layer. They allow very efficient charge transfer from the redox species in solution to the gold surface. We demonstrate the potential of these hybrid constitutional materials by implementing them as biocathodes and by measuring laccase activity that reduces dioxygen to produce water.
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Affiliation(s)
- Erol-Dan Licsandru
- Adaptative Supramolecular Nanosystems Group, Institut Européen des Membranes, ENSCM/UMII/UMR-CNRS 5635, Pl. Eugène Bataillon, CC 047, 34095, Montpellier, Cedex 5, France.
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33
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Sackett SD, Brown ME, Tremmel DM, Ellis T, Burlingham WJ, Odorico JS. Modulation of human allogeneic and syngeneic pluripotent stem cells and immunological implications for transplantation. Transplant Rev (Orlando) 2016; 30:61-70. [PMID: 26970668 DOI: 10.1016/j.trre.2016.02.001] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2015] [Accepted: 02/05/2016] [Indexed: 01/20/2023]
Abstract
Tissues derived from induced pluripotent stem cells (iPSCs) are a promising source of cells for building various regenerative medicine therapies; from simply transplanting cells to reseeding decellularized organs to reconstructing multicellular tissues. Although reprogramming strategies for producing iPSCs have improved, the clinical use of iPSCs is limited by the presence of unique human leukocyte antigen (HLA) genes, the main immunologic barrier to transplantation. In order to overcome the immunological hurdles associated with allogeneic tissues and organs, the generation of patient-histocompatible iPSCs (autologous or HLA-matched cells) provides an attractive platform for personalized medicine. However, concerns have been raised as to the fitness, safety and immunogenicity of iPSC derivatives because of variable differentiation potential of different lines and the identification of genetic and epigenetic aberrations that can occur during the reprogramming process. In addition, significant cost and regulatory barriers may deter commercialization of patient specific therapies in the short-term. Nonetheless, recent studies provide some evidence of immunological benefit for using autologous iPSCs. Yet, more studies are needed to evaluate the immunogenicity of various autologous and allogeneic human iPSC-derived cell types as well as test various methods to abrogate rejection. Here, we present perspectives of using allogeneic vs. autologous iPSCs for transplantation therapies and the advantages and disadvantages of each related to differentiation potential, immunogenicity, genetic stability and tumorigenicity. We also review the current literature on the immunogenicity of syngeneic iPSCs and discuss evidence that questions the feasibility of HLA-matched iPSC banks. Finally, we will discuss emerging methods of abrogating or reducing host immune responses to PSC derivatives.
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Affiliation(s)
- S D Sackett
- Division of Transplantation, Department of Surgery, University of Wisconsin-Madison School of Medicine and Public Health, Madison, WI, USA
| | - M E Brown
- Division of Transplantation, Department of Surgery, University of Wisconsin-Madison School of Medicine and Public Health, Madison, WI, USA
| | - D M Tremmel
- Division of Transplantation, Department of Surgery, University of Wisconsin-Madison School of Medicine and Public Health, Madison, WI, USA
| | - T Ellis
- Department of Pathology and Laboratory Medicine, University of Wisconsin-Madison School of Medicine and Public Health, Madison, WI, USA
| | - W J Burlingham
- Division of Transplantation, Department of Surgery, University of Wisconsin-Madison School of Medicine and Public Health, Madison, WI, USA
| | - J S Odorico
- Division of Transplantation, Department of Surgery, University of Wisconsin-Madison School of Medicine and Public Health, Madison, WI, USA.
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Moulin É, Busseron E, Domoto Y, Ellis T, Osypenko A, Maaloum M, Giuseppone N. Self-assembly of benzene-tris(bis(p-benzyloxy)triphenylamine)carboxamide. CR CHIM 2016. [DOI: 10.1016/j.crci.2015.05.010] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [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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35
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Dijke IE, Hoeppli RE, Ellis T, Pearcey J, Huang Q, McMurchy AN, Boer K, Peeters AMA, Aubert G, Larsen I, Ross DB, Rebeyka I, Campbell A, Baan CC, Levings MK, West LJ. Discarded Human Thymus Is a Novel Source of Stable and Long-Lived Therapeutic Regulatory T Cells. Am J Transplant 2016; 16:58-71. [PMID: 26414799 DOI: 10.1111/ajt.13456] [Citation(s) in RCA: 66] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2015] [Revised: 06/19/2015] [Accepted: 07/14/2015] [Indexed: 01/25/2023]
Abstract
Regulatory T cell (Treg)-based therapy is a promising approach to treat many immune-mediated disorders such as autoimmune diseases, organ transplant rejection, and graft-versus-host disease (GVHD). Challenges to successful clinical implementation of adoptive Treg therapy include difficulties isolating homogeneous cell populations and developing expansion protocols that result in adequate numbers of cells that remain stable, even under inflammatory conditions. We investigated the potential of discarded human thymuses, routinely removed during pediatric cardiac surgery, to be used as a novel source of therapeutic Tregs. Here, we show that large numbers of FOXP3(+) Tregs can be isolated and expanded from a single thymus. Expanded thymic Tregs had stable FOXP3 expression and long telomeres, and suppressed proliferation and cytokine production of activated allogeneic T cells in vitro. Moreover, expanded thymic Tregs delayed development of xenogeneic GVHD in vivo more effectively than expanded Tregs isolated based on CD25 expression from peripheral blood. Importantly, in contrast to expanded blood Tregs, expanded thymic Tregs remained stable under inflammatory conditions. Our results demonstrate that discarded pediatric thymuses are an excellent source of therapeutic Tregs, having the potential to overcome limitations currently hindering the use of Tregs derived from peripheral or cord blood.
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Affiliation(s)
- I E Dijke
- Department of Pediatrics, University of Alberta, Edmonton, AB, Canada.,Alberta Transplant Institute, University of Alberta, Edmonton, AB, Canada
| | - R E Hoeppli
- Department of Surgery, University of British Columbia, Vancouver, BC, Canada
| | - T Ellis
- Department of Pediatrics, University of Alberta, Edmonton, AB, Canada.,Alberta Transplant Institute, University of Alberta, Edmonton, AB, Canada
| | - J Pearcey
- Department of Pediatrics, University of Alberta, Edmonton, AB, Canada.,Alberta Transplant Institute, University of Alberta, Edmonton, AB, Canada
| | - Q Huang
- Department of Surgery, University of British Columbia, Vancouver, BC, Canada
| | - A N McMurchy
- Department of Surgery, University of British Columbia, Vancouver, BC, Canada
| | - K Boer
- Department of Internal Medicine, Erasmus MC Medical Center, Rotterdam, the Netherlands
| | - A M A Peeters
- Department of Internal Medicine, Erasmus MC Medical Center, Rotterdam, the Netherlands
| | - G Aubert
- Terry Fox Laboratory, British Columbia Cancer Research Centre, Vancouver, BC, Canada
| | - I Larsen
- Department of Pediatrics, University of Alberta, Edmonton, AB, Canada.,Alberta Transplant Institute, University of Alberta, Edmonton, AB, Canada
| | - D B Ross
- Alberta Transplant Institute, University of Alberta, Edmonton, AB, Canada.,Department of Surgery, University of Alberta, Edmonton, AB, Canada
| | - I Rebeyka
- Alberta Transplant Institute, University of Alberta, Edmonton, AB, Canada.,Department of Surgery, University of Alberta, Edmonton, AB, Canada
| | - A Campbell
- Department of Surgery, University of British Columbia, Vancouver, BC, Canada
| | - C C Baan
- Department of Internal Medicine, Erasmus MC Medical Center, Rotterdam, the Netherlands
| | - M K Levings
- Department of Surgery, University of British Columbia, Vancouver, BC, Canada
| | - L J West
- Department of Pediatrics, University of Alberta, Edmonton, AB, Canada.,Alberta Transplant Institute, University of Alberta, Edmonton, AB, Canada.,Department of Surgery, University of Alberta, Edmonton, AB, Canada
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Joseph R, Pan X, Cenkus K, Brown L, Ellis T, Di Stasi S. Sex Differences in Self-Reported Hip Function Up to 2 Years After Arthroscopic Surgery for Femoroacetabular Impingement. Am J Sports Med 2016; 44:54-9. [PMID: 26546302 PMCID: PMC5142445 DOI: 10.1177/0363546515610535] [Citation(s) in RCA: 58] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
BACKGROUND Femoroacetabular impingement (FAI) is a significant cause of disability in young adults. Hip arthroscopic surgery restores bony congruence and improves function in the majority of patients, but recent evidence indicates that women may experience worse pre- and postoperative function than men. PURPOSE/HYPOTHESIS The purpose of this study was to identify whether self-reported hip function differed between men and women with symptomatic FAI. The hypothesis was that mean self-reported hip function scores would improve after arthroscopic surgery but that women would report poorer function than men both before and up to 2 years after arthroscopic surgery. STUDY DESIGN Cohort study; Level of evidence, 2. METHODS A total of 229 patients (68.4% women; mean [±SD] age, 31.6 ± 10.8 years; mean [±SD] body mass index, 26.8 ± 11.9 kg/m(2)) underwent hip arthroscopic surgery for unilateral symptomatic FAI. All eligible and consenting patients with radiologically and clinically confirmed FAI completed the International Hip Outcome Tool (iHOT-33) and the Hip Outcome Score activities of daily living subscale (HOS-ADL) before hip arthroscopic surgery and at 3, 6, 12, and 24 months after arthroscopic surgery. A linear mixed model for repeated measures was used to test for differences in self-reported hip function between men and women over the study period (P ≤ .05). RESULTS There were no significant time × sex interactions for either the HOS-ADL (P = .12) or iHOT-33 (P = .64), but both measures showed significant improvements between the preoperative time point and each of the 4 follow-up points (P < .0001); however, self-reported hip function did not improve between 6 and 24 months after arthroscopic surgery (P ≥ .11). Post hoc independent t tests indicated that women reported poorer hip function than did men before surgery (P ≤ .003) both on the HOS-ADL (mean ± standard error of the mean [SEM], 67.4 ± 1.9 [men] vs 60.5 ± 1.3 [women]) and iHOT-33 (mean ± SEM, 38.0 ± 1.9 [men] vs 30.9 ± 1.3 [women]); scores were not different between sexes at any other time point. CONCLUSION These findings indicate improvements in self-reported hip function in patients with FAI, regardless of sex, until 6 months after hip arthroscopic surgery. Although women reported poorer preoperative function than did men, the differences were not significant 2 years after surgery.
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Affiliation(s)
- Roody Joseph
- Orthopedic Physical Therapy Residency Program, OSU Sports Medicine, The Ohio State University Wexner Medical Center, Columbus, Ohio, USA.,Outpatient Rehabilitation Center, Memorial Hospital Miramar, Miramar, Florida, USA
| | - Xueliang Pan
- Center for Biostatistics, The Ohio State University, Columbus, Ohio, USA
| | - Kathleen Cenkus
- Department of Plastic Surgery, The Ohio State University, Columbus, Ohio, USA
| | - Lindsey Brown
- Division of Physical Therapy, The Ohio State University, Columbus, Ohio, USA.,School of Health and Rehabilitation Sciences, The Ohio State University, Columbus, Ohio, USA
| | | | - Stephanie Di Stasi
- School of Health and Rehabilitation Sciences, The Ohio State University, Columbus, Ohio, USA.,Sports Health and Performance Institute, OSU Sports Medicine, The Ohio State University Wexner Medical Center, Columbus, Ohio, USA.,Department of Orthopaedics, The Ohio State University, Columbus, Ohio, USA.,Address correspondence to Stephanie Di Stasi, PT, PhD, Department of Orthopaedics, The Ohio State University, 2050 Kenny Road, Columbus, OH 43221, USA ()
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Becker LC, Carter-Kelley S, Ellis T, Cenkus K, Di Stasi SL. PRE-OPERATIVE LOW BACK PAIN NEGATIVELY AFFECTS SELF-REPORTED FUNCTION IN INDIVIDUALS UNDERGOING HIP ARTHROSCOPY. Int J Sports Phys Ther 2015; 10:992-997. [PMID: 26674513 PMCID: PMC4675200] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/05/2023] Open
Abstract
BACKGROUND/PURPOSE Low back pain (LBP) is a common source of disability in adults and highly prevalent in patients with painful hip pathology. Persistent LBP after hip arthroplasty is associated with lower self-reported function, however, the effect of pre-operative LBP in patients undergoing hip arthroscopy for FAI has not been evaluated. The purpose of this study was to determine whether improvements in self-reported hip function following arthroscopic surgery for femoroacetabular impingement (FAI) differed between those with and without reports of pre-operative low back pain. STUDY DESIGN Cohort. METHODS Three hundred eighteen subjects undergoing primary hip arthroscopy for clinically and radiographically-confirmed FAI were recruited and consented. One hundred fifty-six of these subjects completed the International Hip Outcomes Tool (iHOT-33) and the Hip Outcome Score Activities of Daily Living Subscale (HOS-ADL) before, and six and 12 months after surgery. Subjects were grouped based on the self-reported presence or absence of LBP prior to arthroscopy. A repeated measures analysis of variance was used to determine the effects of time and low back pain on iHOT-33 and HOS-ADL scores. RESULTS Seventy-five of 156 subjects (48.1%) reported LBP prior to surgery. A main effect of time was found for both outcome measures (p<0.001), demonstrating improvement in self-reported outcomes over the testing period. There was a main effect of group for the iHOT-33 (LBP: 52.0 [47.9,56.0]; no LBP 57.9 [53.9,61.8]; p = 0.043) but not for the HOS-ADL (LBP: 75.2 [72.2,78.2]; no LBP 78.8 [75.9,81.7]; p = 0.088) indicating that subjects with pre-operative LBP had poorer self-reported function per the iHOT-33 compared to those without LBP. CONCLUSION Self-reported hip function scores improved regardless of the presence of pre-operative LBP; however subjects with LBP reported poorer self-reported function per the iHOT-33 as compared to those without LBP up to 12 months post-operatively. LEVEL OF EVIDENCE 3c.
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Affiliation(s)
| | | | | | - Kathleen Cenkus
- Department of Plastic Surgery at The Ohio State University Wexner Medical Center, Columbus, OH, USA
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Miller MM, Grooms D, Schussler E, Clifton D, Ellis T, Onate J. Single Leg Anterior Reach Performance and Dynamic Postural Control in Patients with Femoroacetabular Impingement. Med Sci Sports Exerc 2015. [DOI: 10.1249/01.mss.0000477355.21717.8e] [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: 11/21/2022]
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Fowler JC, Madan A, Allen JG, Ellis T, Mahoney J, Hardesty S, Frueh BC, Oldham JM. Improvement in health-related quality of life among adults with serious mental illness receiving inpatient treatment: a prospective cohort study. J Clin Psychiatry 2015; 76:e632-8. [PMID: 26035197 DOI: 10.4088/jcp.14m09041] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/05/2014] [Accepted: 05/21/2014] [Indexed: 10/23/2022]
Abstract
OBJECTIVE This study examined changes in health-related quality of life in adult inpatients with serious mental illness engaged in a 6- to 8-week intensive treatment program. METHOD Admission and discharge assessment with the MOS 36-item Short-Form Health Survey was completed (June 2010-June 2012) for 410 adults aged 18-68 years. Paired t tests and effect size estimates were calculated for the overall sample, and reliable change index scores and clinical significance were calculated to estimate individual-level response and recovery rates. Hierarchical stepwise regression analyses were conducted to explore patient pretreatment characteristics, including total number of DSM-IV-TR diagnoses, that influence treatment response. RESULTS Large effect size improvements were demonstrated for the Mental Component Summary score (Cohen d = 1.5), including subjective ratings of vitality (Cohen d = 1.1), social functioning (Cohen d = 1.3), role-emotional functioning (Cohen d = 1.3), and mental health (Cohen d = 1.3). Equivocal findings for change in physical health were demonstrated, with the majority of patients demonstrating no significant change in function (t409 = 0.14, P = .89) but approximately equal numbers of patients demonstrating improvement and deterioration. The pretreatment characteristic of a tendency to be interpersonally distant, cold, and disengaged was predictive of a poorer outcome on Mental Component Summary treatment response (P < .001). CONCLUSIONS In light of a heavy burden of illness and high psychiatric comorbidity of this sample, treatment response was generally positive for improvement in mental health functioning. This study adds to a growing body of evidence indicating robust treatment response even for those with serious mental illness when treatment is intensive and multimodal.
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Foster AD, Ryan J, Ellis T, Flom J. Safe suture anchor insertion for anterior and posterior hip labral repair. J Hip Preserv Surg 2015; 2:170-4. [PMID: 27011835 PMCID: PMC4718493 DOI: 10.1093/jhps/hnv027] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/10/2014] [Revised: 01/20/2015] [Accepted: 03/29/2015] [Indexed: 11/13/2022] Open
Abstract
We sought to define bone thickness in relation to the chondral surface at various depths along the anterior and posterior acetabular rim and safe portals for anchor insertion in these regions. Six cadaveric pelvises were mounted on a custom jig. A custom guide was attached to simulate anterolateral (AL), mid-anterior (MA), distal anterolateral (DALA) and posterolateral (PL) arthroscopy portals. Anterior 3 o’clock and 4 o’clock positions were drilled using MA and DALA portals. Posterior 8 o’clock to 11 o’clock positions were drilled using a 1.4-mm drill bit from the PL portal. At depths of 5, 10 and 15 mm, the distance from the drill to the intra and extra-articular surfaces was measured using a custom caliper. Mean distance between drill hole and articular surface for anterior and posterior positions ranged from 1.61 to 2.75 mm at 5 mm. The smallest distance between the drill hole and articular surface and the largest width between drill hole and the extra-articular surface were at the 4 o’clock position. No difference between the MA and DALA portals were noted for the anterior positions. For the posterior rim positions, the distance on the articular side remained consistent throughout. For the posterior positions, only the PL portal was utilized. Both the MA or DALA portals can be utilized for safe drilling of the anterior rim positions. The posterior positions can all be safely drilled with a relatively good bone margin using the PL portal, but use of the MA or DALA portals resulted in extra-articular cortical perforation in all cases.
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Affiliation(s)
- Andrew D Foster
- 1. Department of Orthopaedics, The Ohio State University Wexner Medical Center, Columbus, OH, USA
| | - John Ryan
- 1. Department of Orthopaedics, The Ohio State University Wexner Medical Center, Columbus, OH, USA
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Zacharias M, Hynes B, Sweitzer N, Johnson M, Akhter S, Ellis T, Dhingra R. Outcomes in Cardiac Transplant Recipients According to Pretransplant AT1R Antibody Levels and Donor AT1R Polymorphisms. J Heart Lung Transplant 2015. [DOI: 10.1016/j.healun.2015.01.500] [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] Open
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Strowd RE, Swett K, Harmon M, Carter AF, Pop-Vicas A, Chan M, Tatter SB, Ellis T, Blevins M, High K, Lesser GJ. Influenza vaccine immunogenicity in patients with primary central nervous system malignancy. Neuro Oncol 2014; 16:1639-44. [PMID: 24714522 PMCID: PMC4232079 DOI: 10.1093/neuonc/nou051] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2013] [Accepted: 03/10/2014] [Indexed: 11/12/2022] Open
Abstract
BACKGROUND Patients with central nervous system (CNS) malignancies represent an "at-risk" population for contracting influenza, particularly if they are receiving ongoing chemotherapy, radiation, and/or glucocorticoid treatment. The Centers for Disease Control endorses vaccination for these patients, although data are not available to indicate whether they mount an immunologic response adequate to achieve clinical protection. METHODS A pilot prospective cohort study was designed to evaluate the immunogenicity of the standard-dose trivalent inactivated influenza vaccine in patients with malignant CNS tumors. Baseline data collection included diagnosis, chemotherapy, timing of chemotherapy or radiation relative to vaccination, and glucocorticoid dose. Serum samples were collected at baseline, day 14, day 28, and month 3 following vaccination. Samples were tested using hemagglutinin inhibition to determine seroconversion (4-fold rise in titer) and seroprotection (titer >1:40). RESULTS A total of 38 patients were enrolled (mean age, 54 years ±13.5 years, 60.5% male, 94.7% Caucasian, and 5.3% African American). CNS tumor diagnoses included glioblastoma multiforme (55.2%), other high-grade glioma (13.2%), low-grade glioma (15.8%), and primary CNS lymphoma (15.8%). At enrollment, 20 patients (52.6%) were taking glucocorticoids, 25 (65.8%) were on active chemotherapy, and 3 (7.9%) were undergoing radiation. Seroconversion rates at day 28 for the A/H1N1, A/H3N2, and B strains were 37%, 23% and 23%, respectively. Seroprotection was 80%, 69%, and 74%, respectively. All rates were significantly lower than published rates in healthy adults (P < .001). CONCLUSION Influenza vaccine immunogenicity is significantly reduced in patients with CNS malignancies. Future studies are needed to determine the causative etiologies and appropriate vaccination strategies.
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Affiliation(s)
- Roy E Strowd
- Department of Neurology, Wake Forest School of Medicine, Winston-Salem, North Carolina (R.E.S.); Department of Biostatistics, Wake Forest School of Public Health, Wake Forest University Health Sciences, Winston-Salem, North Carolina (K.S.); Department of Internal Medicine, Section on Hematology and Oncology, Wake Forest School of Medicine, Winston-Salem, North Carolina (M.H., A.F.C., G.J.L.); Division of Infectious Disease, Alpert Medical School at Brown University, Providence, Rhode Island (A.P.); Department of Radiation Oncology, Wake Forest School of Medicine, Winston-Salem, North Carolina (M.C.); Department of Neurosurgery, Wake Forest School of Medicine, Winston-Salem, North Carolina (S.B.T.); Department of Internal Medicine, Section on Infectious Disease, Wake Forest School of Medicine, Winston-Salem, North Carolina (M.B., K.H.)
| | - Katrina Swett
- Department of Neurology, Wake Forest School of Medicine, Winston-Salem, North Carolina (R.E.S.); Department of Biostatistics, Wake Forest School of Public Health, Wake Forest University Health Sciences, Winston-Salem, North Carolina (K.S.); Department of Internal Medicine, Section on Hematology and Oncology, Wake Forest School of Medicine, Winston-Salem, North Carolina (M.H., A.F.C., G.J.L.); Division of Infectious Disease, Alpert Medical School at Brown University, Providence, Rhode Island (A.P.); Department of Radiation Oncology, Wake Forest School of Medicine, Winston-Salem, North Carolina (M.C.); Department of Neurosurgery, Wake Forest School of Medicine, Winston-Salem, North Carolina (S.B.T.); Department of Internal Medicine, Section on Infectious Disease, Wake Forest School of Medicine, Winston-Salem, North Carolina (M.B., K.H.)
| | - Michele Harmon
- Department of Neurology, Wake Forest School of Medicine, Winston-Salem, North Carolina (R.E.S.); Department of Biostatistics, Wake Forest School of Public Health, Wake Forest University Health Sciences, Winston-Salem, North Carolina (K.S.); Department of Internal Medicine, Section on Hematology and Oncology, Wake Forest School of Medicine, Winston-Salem, North Carolina (M.H., A.F.C., G.J.L.); Division of Infectious Disease, Alpert Medical School at Brown University, Providence, Rhode Island (A.P.); Department of Radiation Oncology, Wake Forest School of Medicine, Winston-Salem, North Carolina (M.C.); Department of Neurosurgery, Wake Forest School of Medicine, Winston-Salem, North Carolina (S.B.T.); Department of Internal Medicine, Section on Infectious Disease, Wake Forest School of Medicine, Winston-Salem, North Carolina (M.B., K.H.)
| | - Annette F Carter
- Department of Neurology, Wake Forest School of Medicine, Winston-Salem, North Carolina (R.E.S.); Department of Biostatistics, Wake Forest School of Public Health, Wake Forest University Health Sciences, Winston-Salem, North Carolina (K.S.); Department of Internal Medicine, Section on Hematology and Oncology, Wake Forest School of Medicine, Winston-Salem, North Carolina (M.H., A.F.C., G.J.L.); Division of Infectious Disease, Alpert Medical School at Brown University, Providence, Rhode Island (A.P.); Department of Radiation Oncology, Wake Forest School of Medicine, Winston-Salem, North Carolina (M.C.); Department of Neurosurgery, Wake Forest School of Medicine, Winston-Salem, North Carolina (S.B.T.); Department of Internal Medicine, Section on Infectious Disease, Wake Forest School of Medicine, Winston-Salem, North Carolina (M.B., K.H.)
| | - Aurora Pop-Vicas
- Department of Neurology, Wake Forest School of Medicine, Winston-Salem, North Carolina (R.E.S.); Department of Biostatistics, Wake Forest School of Public Health, Wake Forest University Health Sciences, Winston-Salem, North Carolina (K.S.); Department of Internal Medicine, Section on Hematology and Oncology, Wake Forest School of Medicine, Winston-Salem, North Carolina (M.H., A.F.C., G.J.L.); Division of Infectious Disease, Alpert Medical School at Brown University, Providence, Rhode Island (A.P.); Department of Radiation Oncology, Wake Forest School of Medicine, Winston-Salem, North Carolina (M.C.); Department of Neurosurgery, Wake Forest School of Medicine, Winston-Salem, North Carolina (S.B.T.); Department of Internal Medicine, Section on Infectious Disease, Wake Forest School of Medicine, Winston-Salem, North Carolina (M.B., K.H.)
| | - Michael Chan
- Department of Neurology, Wake Forest School of Medicine, Winston-Salem, North Carolina (R.E.S.); Department of Biostatistics, Wake Forest School of Public Health, Wake Forest University Health Sciences, Winston-Salem, North Carolina (K.S.); Department of Internal Medicine, Section on Hematology and Oncology, Wake Forest School of Medicine, Winston-Salem, North Carolina (M.H., A.F.C., G.J.L.); Division of Infectious Disease, Alpert Medical School at Brown University, Providence, Rhode Island (A.P.); Department of Radiation Oncology, Wake Forest School of Medicine, Winston-Salem, North Carolina (M.C.); Department of Neurosurgery, Wake Forest School of Medicine, Winston-Salem, North Carolina (S.B.T.); Department of Internal Medicine, Section on Infectious Disease, Wake Forest School of Medicine, Winston-Salem, North Carolina (M.B., K.H.)
| | - Stephen B Tatter
- Department of Neurology, Wake Forest School of Medicine, Winston-Salem, North Carolina (R.E.S.); Department of Biostatistics, Wake Forest School of Public Health, Wake Forest University Health Sciences, Winston-Salem, North Carolina (K.S.); Department of Internal Medicine, Section on Hematology and Oncology, Wake Forest School of Medicine, Winston-Salem, North Carolina (M.H., A.F.C., G.J.L.); Division of Infectious Disease, Alpert Medical School at Brown University, Providence, Rhode Island (A.P.); Department of Radiation Oncology, Wake Forest School of Medicine, Winston-Salem, North Carolina (M.C.); Department of Neurosurgery, Wake Forest School of Medicine, Winston-Salem, North Carolina (S.B.T.); Department of Internal Medicine, Section on Infectious Disease, Wake Forest School of Medicine, Winston-Salem, North Carolina (M.B., K.H.)
| | - Thomas Ellis
- Department of Neurology, Wake Forest School of Medicine, Winston-Salem, North Carolina (R.E.S.); Department of Biostatistics, Wake Forest School of Public Health, Wake Forest University Health Sciences, Winston-Salem, North Carolina (K.S.); Department of Internal Medicine, Section on Hematology and Oncology, Wake Forest School of Medicine, Winston-Salem, North Carolina (M.H., A.F.C., G.J.L.); Division of Infectious Disease, Alpert Medical School at Brown University, Providence, Rhode Island (A.P.); Department of Radiation Oncology, Wake Forest School of Medicine, Winston-Salem, North Carolina (M.C.); Department of Neurosurgery, Wake Forest School of Medicine, Winston-Salem, North Carolina (S.B.T.); Department of Internal Medicine, Section on Infectious Disease, Wake Forest School of Medicine, Winston-Salem, North Carolina (M.B., K.H.)
| | - Maria Blevins
- Department of Neurology, Wake Forest School of Medicine, Winston-Salem, North Carolina (R.E.S.); Department of Biostatistics, Wake Forest School of Public Health, Wake Forest University Health Sciences, Winston-Salem, North Carolina (K.S.); Department of Internal Medicine, Section on Hematology and Oncology, Wake Forest School of Medicine, Winston-Salem, North Carolina (M.H., A.F.C., G.J.L.); Division of Infectious Disease, Alpert Medical School at Brown University, Providence, Rhode Island (A.P.); Department of Radiation Oncology, Wake Forest School of Medicine, Winston-Salem, North Carolina (M.C.); Department of Neurosurgery, Wake Forest School of Medicine, Winston-Salem, North Carolina (S.B.T.); Department of Internal Medicine, Section on Infectious Disease, Wake Forest School of Medicine, Winston-Salem, North Carolina (M.B., K.H.)
| | - Kevin High
- Department of Neurology, Wake Forest School of Medicine, Winston-Salem, North Carolina (R.E.S.); Department of Biostatistics, Wake Forest School of Public Health, Wake Forest University Health Sciences, Winston-Salem, North Carolina (K.S.); Department of Internal Medicine, Section on Hematology and Oncology, Wake Forest School of Medicine, Winston-Salem, North Carolina (M.H., A.F.C., G.J.L.); Division of Infectious Disease, Alpert Medical School at Brown University, Providence, Rhode Island (A.P.); Department of Radiation Oncology, Wake Forest School of Medicine, Winston-Salem, North Carolina (M.C.); Department of Neurosurgery, Wake Forest School of Medicine, Winston-Salem, North Carolina (S.B.T.); Department of Internal Medicine, Section on Infectious Disease, Wake Forest School of Medicine, Winston-Salem, North Carolina (M.B., K.H.)
| | - Glenn J Lesser
- Department of Neurology, Wake Forest School of Medicine, Winston-Salem, North Carolina (R.E.S.); Department of Biostatistics, Wake Forest School of Public Health, Wake Forest University Health Sciences, Winston-Salem, North Carolina (K.S.); Department of Internal Medicine, Section on Hematology and Oncology, Wake Forest School of Medicine, Winston-Salem, North Carolina (M.H., A.F.C., G.J.L.); Division of Infectious Disease, Alpert Medical School at Brown University, Providence, Rhode Island (A.P.); Department of Radiation Oncology, Wake Forest School of Medicine, Winston-Salem, North Carolina (M.C.); Department of Neurosurgery, Wake Forest School of Medicine, Winston-Salem, North Carolina (S.B.T.); Department of Internal Medicine, Section on Infectious Disease, Wake Forest School of Medicine, Winston-Salem, North Carolina (M.B., K.H.)
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Armao JJ, Maaloum M, Ellis T, Fuks G, Rawiso M, Moulin E, Giuseppone N. Healable Supramolecular Polymers as Organic Metals. J Am Chem Soc 2014; 136:11382-8. [DOI: 10.1021/ja5044006] [Citation(s) in RCA: 78] [Impact Index Per Article: 7.8] [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)
- Joseph J. Armao
- SAMS
research group, University of Strasbourg, Institut Charles Sadron, CNRS, 23 rue du Loess, BP 84047, 67034 Strasbourg Cedex 2, France
| | - Mounir Maaloum
- SAMS
research group, University of Strasbourg, Institut Charles Sadron, CNRS, 23 rue du Loess, BP 84047, 67034 Strasbourg Cedex 2, France
| | - Thomas Ellis
- SAMS
research group, University of Strasbourg, Institut Charles Sadron, CNRS, 23 rue du Loess, BP 84047, 67034 Strasbourg Cedex 2, France
| | - Gad Fuks
- SAMS
research group, University of Strasbourg, Institut Charles Sadron, CNRS, 23 rue du Loess, BP 84047, 67034 Strasbourg Cedex 2, France
| | - Michel Rawiso
- SAMS
research group, University of Strasbourg, Institut Charles Sadron, CNRS, 23 rue du Loess, BP 84047, 67034 Strasbourg Cedex 2, France
| | - Emilie Moulin
- SAMS
research group, University of Strasbourg, Institut Charles Sadron, CNRS, 23 rue du Loess, BP 84047, 67034 Strasbourg Cedex 2, France
| | - Nicolas Giuseppone
- SAMS
research group, University of Strasbourg, Institut Charles Sadron, CNRS, 23 rue du Loess, BP 84047, 67034 Strasbourg Cedex 2, France
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Dijke E, McMurchy A, Ellis T, Boer K, Larsen I, Rebeyka I, Ross D, Baan C, Levings M, West L. Expanded Thymic CD25+FOXP3+ Regulatory T Cells (Tregs) Maintain Stable Function and Phenotype Under Inflammatory Conditions - Potential for Cellular Therapy? J Heart Lung Transplant 2014. [DOI: 10.1016/j.healun.2014.01.104] [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] Open
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Stoicea N, Ellis T, Moran K, Ackermann W, Wilson T, Quevedo E, Bergese S. Perioperative Outcome of Dyssomnia Patients on Chronic Methylphenidate Use. J Investig Med High Impact Case Rep 2014; 2:2324709614521398. [PMID: 26425593 PMCID: PMC4528862 DOI: 10.1177/2324709614521398] [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] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Methylphenidate is frequently prescribed for attention deficit hyperactivity disorder, narcolepsy, and other sleep disorders requiring psychostimulants. Our report is based on 2 different clinical experiences of patients with chronic methylphenidate use, undergoing general anesthesia. These cases contrast different strategies of taking versus withholding the drug treatment on the day of surgery. From the standpoint of anesthetic management and patient safety, the concerns for perioperative methylphenidate use are mainly related to cardiovascular stability and possible counteraction of sedatives and anesthetics.
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Affiliation(s)
- Nicoleta Stoicea
- Department of Anesthesiology, Wexner Medical Center, Ohio State University, Columbus, OH
| | - Thomas Ellis
- Department of Orthopaedics, Wexner Medical Center, Ohio State University, Columbus, OH
| | - Kenneth Moran
- Department of Anesthesiology, Wexner Medical Center, Ohio State University, Columbus, OH
| | - Wiebke Ackermann
- Department of Anesthesiology, Wexner Medical Center, Ohio State University, Columbus, OH
| | | | - Eduardo Quevedo
- Department of Anesthesiology, Wexner Medical Center, Ohio State University, Columbus, OH
| | - Sergio Bergese
- Department of Anesthesiology, Wexner Medical Center, Ohio State University, Columbus, OH ; Department of Neurological Surgery, Wexner Medical Center, Ohio State University, Columbus, OH
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Scott AP, Hill T, Beresford N, Runnalls TJ, Sumpter JP, Ellis T. Out-of-season production of 17,20β-dihydroxypregn-4-en-3-one in the roach Rutilus rutilus. J Fish Biol 2013; 83:233-249. [PMID: 23902304 DOI: 10.1111/jfb.12150] [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] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/09/2012] [Accepted: 04/10/2013] [Indexed: 06/02/2023]
Abstract
In this study, although the highest production of two physiologically significant progestins in teleosts [17,20β-dihydroxypregn-4-en-3-one (17,20β-P) and 17,20β,21-trihydroxypregn-4-en-3-one (17,20β,21-P)] was observed in the period just prior to spawning in both male and female roach Rutilus rutilus, there was also a substantial production (mean levels of 5-10 ng ml(-1) in blood; and a rate of release of 5-20 ng fish(-1) h(-1) into the water) in males and females in the late summer and early autumn (at least 7 months prior to spawning). During this period, the ovaries were increasing rapidly in size and histological sections were dominated by oocytes in the secondary growth phase [i.e. incorporation of vitellogenin (VTG)]. At the same time, the testes were also increasing rapidly in size and histological sections were dominated by cysts containing mainly spermatogonia type B. Measurements were also made of 11-ketotestosterone (11-KT) in males and 17β-oestradiol and VTG in females. The 3 months with the highest production of 11-KT coincided with the period that spermatozoa were present in the testes. In females, the first sign of a rise in 17β-oestradiol concentrations coincided with the time of the first appearance of yolk globules in the oocytes (in August). The role of the progestins during the late summer and autumn has not been established.
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Affiliation(s)
- A P Scott
- Centre for Environment, Fisheries and Aquaculture Science (Cefas), Barrack Road, Weymouth, Dorset, DT4 8UB, UK.
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Zangwill S, Berger S, Shah T, Schiller J, Ellis T, Stendahl G, Cole A, Mitchell M, Woods R, Tweddell J. The Virtual Crossmatch at Children’s Hospital of Wisconsin – Outcomes for Predicted Positive Crossmatches. J Heart Lung Transplant 2013. [DOI: 10.1016/j.healun.2013.01.242] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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Abstract
The authors present the case of a 58-year-old gentleman presenting with atypical carcinoid tumor of primary lung origin metastasizing to a previously identified pituitary macroadenoma. The patient presented with symptoms of headache and visual disturbance. Imaging revealed enlargement of a known sellar mass as well as three separate enhancing lesions in the brain parenchyma. Resection was accomplished via a transnasal transshpenoidal approach without complication. Immunoreactivity was demonstrated to synaptophysin, chromogranin, CD56, epithelial membrane antigen, and thyroid transcription factor-1. The specimen was also marked by negative staining for pituitary hormones. This case demonstrates a rare occurrence of metastastic spread of tumor to a previously identified pituitary macroadenoma.
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Affiliation(s)
- D Campbell
- Wake Forest Baptist Health, North Carolina, USA
| | - Nk Amponsah
- Wake Forest Baptist Health, North Carolina, USA
| | - R Mott
- Wake Forest Baptist Health, North Carolina, USA
| | - T Ellis
- Wake Forest Baptist Health, North Carolina, USA
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Keifer M, Magurany-Brotski C, Guerrero-Silva F, Ellis T. Development and implementation of an agricultural safety consultation program to protect dairy farm workers. Inj Prev 2012. [DOI: 10.1136/injuryprev-2012-040590m.18] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Siengsanan-Lamont J, Robertson ID, Blacksell SD, Ellis T, Saengchoowong S, Suwanpukdee S, Yongyuttawichai P, Cheewajorn K, Jangjaras J, Chaichoun K, Wiriyarat W, Ratanakorn P. A Study of Risk Factors for Infection with HPAI H5N1 in Small Poultry Farms in Thailand Using a Questionnaire Survey. Zoonoses Public Health 2012; 60:209-14. [DOI: 10.1111/j.1863-2378.2012.01515.x] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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