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Davis RJ, Exilus S, Best S, Willink A, Akst LM. The Geographic Distribution of Videolaryngostroboscopy in the United States. J Voice 2023; 37:798.e7-798.e14. [PMID: 34158210 DOI: 10.1016/j.jvoice.2021.05.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2021] [Accepted: 05/04/2021] [Indexed: 11/17/2022]
Abstract
PURPOSE To study the geographic utilization of videolaryngostroboscopy (VLS) with the hypothesis that office-based voice care is unevenly distributed across the United States. MATERIALS AND METHODS This is a cross-sectional database analysis of Medicare beneficiaries. The Centers for Medicare and Medicaid Services Provider Utilization and Payment Data Physician and Other Supplier Public Use File from 2012 to 2017 was analyzed to evaluate VLS utilization. VLS distribution was assessed by calculating the density of VLS in each of the 306 hospital referral regions (HRRs) nationally. Associations between VLS density and population demographics and health system factors were assessed using Pearson correlation and multivariate regression analyses. RESULTS In total, 957,648 outpatient VLS were billed to Medicare part B between 2012 and 2017. The annual VLS density per HRR ranged from 0 to 38.2 per 1,000 enrollees. Pearson correlation revealed positive correlations between VLS density and number of Medicare enrollees (r = 0.2584, P < 0.001), income (r = 0.1913, P = 0.0008), education (r = 0.2089, P = 0.0002), and density of otolaryngologists (r = 0.1589, P = 0.0053) and medical specialists (r = 0.2326, P < 0.0001). A negative Pearson correlation was observed between VLS density and percent male (r = -0.1338, P = 0.0192) and Medicare mortality rate (r = -0.1628, P = 0.0043). On multivariate regression positive associations between VLS and number of Medicare enrollees (P = 0.002) and otolaryngologists (P = 0.049), and negative association with Medicare mortality rates (P = 0.032) remained significant. CONCLUSIONS The distribution of office-based voice care varies widely across the country, even when analysis by HRR should have homogenized access to specialty care. Greater availability of VLS is seen in HRRs with more Medicare enrollees, greater density of otolaryngologists, and lower mortality rates.
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Affiliation(s)
- Ruth J Davis
- Department of Otolaryngology-Head and Neck Surgery, Johns Hopkins University School of Medicine, Baltimore, Maryland.
| | - Smirnov Exilus
- Department of Otolaryngology-Head and Neck Surgery, Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Simon Best
- Department of Otolaryngology-Head and Neck Surgery, Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Amber Willink
- Menzies Centre for Health Policy, University of Sydney School of Public Health, Sydney, Australia
| | - Lee M Akst
- Department of Otolaryngology-Head and Neck Surgery, Johns Hopkins University School of Medicine, Baltimore, Maryland
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Magrath WJ, Shneyderman M, Bauer TK, Neira P, Best S, Akst LM. Readability Analysis and Accessibility of Online Materials About Transgender Voice Care. Otolaryngol Head Neck Surg 2022; 167:952-958. [PMID: 35671144 DOI: 10.1177/01945998221103466] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
OBJECTIVE To determine readability, understandability, and actionability of online health information related to transgender voice care. STUDY DESIGN Review of online materials. SETTING Academic medical center. METHODS A Google search of "transgender voice care" was performed with the first 50 websites meeting inclusion criteria included. Readability was assessed using the Flesch Reading Ease Score (FRES), Flesch-Kincaid Grade Level (FKGL), and the Simple Measure of Gobbledygook (SMOG). Understandability and actionability were measured by 2 independent reviewers using the Patient Education Materials Assessment Tool for Printable Materials (PEMAT-P). Unpaired t tests were used to compare clinician- and patient-oriented sites, surgical and nonsurgical sites, and sites that discuss nonbinary indications for voice care. Analysis of variance was used to compare sites that discuss voice feminization, masculinization, both, or neither. RESULTS Average scores across the cohort for FRES, FKGL, and SMOG were 43.77 ± 13.52, 12.14 ± 2.66, and 11.30 ± 1.93, respectively, indicating materials were above a 12th-grade reading level. PEMAT-P scores for understandability and actionability were 64.95% ± 15.78% and 40.55% ± 23.86%, respectively. Patient-oriented sites were significantly more understandable and actionable than clinician-oriented sites (P < .02). Websites that discussed only voice feminization were significantly more readable according to objective metrics (FKGL, SMOG) than websites that discussed both feminization and masculinization or those that did not differentiate care types (P < .05). CONCLUSION Online information written about transgender voice care is written at a level above what is recommended for patient education materials. Providers may improve accessibility of transgender voice care by enhancing readability of online materials.
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Affiliation(s)
- Walker J Magrath
- Department of Otolaryngology-Head and Neck Surgery, School of Medicine, Johns Hopkins University, Baltimore, Maryland, USA
| | - Matthew Shneyderman
- Department of Otolaryngology-Head and Neck Surgery, School of Medicine, Johns Hopkins University, Baltimore, Maryland, USA
| | - Tom K Bauer
- Johns Hopkins Health System, Baltimore, Maryland, USA
| | - Paula Neira
- Johns Hopkins Center for Transgender Health, Johns Hopkins Medical Institutions, Baltimore, Maryland, USA
| | - Simon Best
- Department of Otolaryngology-Head and Neck Surgery, School of Medicine, Johns Hopkins University, Baltimore, Maryland, USA.,Johns Hopkins Center for Transgender Health, Johns Hopkins Medical Institutions, Baltimore, Maryland, USA
| | - Lee M Akst
- Department of Otolaryngology-Head and Neck Surgery, School of Medicine, Johns Hopkins University, Baltimore, Maryland, USA.,Johns Hopkins Center for Transgender Health, Johns Hopkins Medical Institutions, Baltimore, Maryland, USA
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Shneyderman M, Snow GE, Davis R, Best S, Akst LM. Readability of Online Materials Related to Vocal Cord Leukoplakia. OTO Open 2021; 5:2473974X211032644. [PMID: 34396027 PMCID: PMC8358515 DOI: 10.1177/2473974x211032644] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2021] [Accepted: 06/26/2021] [Indexed: 11/15/2022] Open
Abstract
Objectives To assess readability and understandability of online materials for vocal cord leukoplakia. Study Design Review of online materials. Setting Academic medical center. Methods A Google search of "vocal cord leukoplakia" was performed, and the first 50 websites were considered for analysis. Readability was measured by the Flesch Reading Ease Score (FRES), Flesch-Kincaid Grade Level (FKGL), and Simple Measure of Gobbledygook (SMOG). Understandability and actionability were assessed by 2 independent reviewers with the PEMAT-P (Patient Education Materials Assessment Tool for Printable Materials). Unpaired t tests compared scores between sites aimed at physicians and those at patients, and a Cohen's kappa was calculated to measure interrater reliability. Results Twenty-two websites (17 patient oriented, 5 physician oriented) met inclusion criteria. For the entire cohort, FRES, FKGL, and SMOG scores (mean ± SD) were 36.90 ± 20.65, 12.96 ± 3.28, and 15.65 ± 3.57, respectively, indicating that materials were difficult to read at a >12th-grade level. PEMAT-P understandability and actionability scores were 73.65% ± 7.05% and 13.63% ± 22.47%. Statistically, patient-oriented sites were more easily read than physician-oriented sites (P < .02 for each of the FRES, FKGL, and SMOG comparisons); there were no differences in understandability or actionability scores between these categories of sites. Conclusion Online materials for vocal cord leukoplakia are written at a level more advanced than what is recommended for patient education materials. Awareness of the current ways that these online materials are failing our patients may lead to improved education materials in the future.
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Affiliation(s)
| | - Grace E Snow
- Department of Otolaryngology-Head and Neck Surgery, School of Medicine, Johns Hopkins University, Baltimore, Maryland, USA
| | - Ruth Davis
- Department of Otolaryngology-Head and Neck Surgery, School of Medicine, Johns Hopkins University, Baltimore, Maryland, USA
| | - Simon Best
- Department of Otolaryngology-Head and Neck Surgery, School of Medicine, Johns Hopkins University, Baltimore, Maryland, USA
| | - Lee M Akst
- Department of Otolaryngology-Head and Neck Surgery, School of Medicine, Johns Hopkins University, Baltimore, Maryland, USA
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Best S, Ding S, Kersbergen A, Reljic B, Wright G, Rathi V, Desouza D, Mcconville M, Ritchie M, Sutherland K. P62.05 Identifying Therapeutic Approaches to Treat KEAP1-Mutant Lung Adenocarcinoma. J Thorac Oncol 2021. [DOI: 10.1016/j.jtho.2021.01.979] [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: 11/29/2022]
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Best S, Hess J, Souza-Fonseca Guimaraes F, Cursons J, Kersbergen A, You Y, Ng J, Davis M, Leong T, Irving L, Ritchie M, Steinfort D, Huntington N, Sutherland K. FP10.02 Investigating the Immunophenotype of Small Cell Lung Cancer to Improve Immunotherapeutic Targeting. J Thorac Oncol 2021. [DOI: 10.1016/j.jtho.2021.01.124] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Best S, Hess J, Souza-Fonseca Guimaraes F, Kersbergen A, Hyslop S, Rautela J, Huntington N, Sutherland K. MA13.04 Harnessing Natural Killer Cells to Treat Metastatic Small Cell Lung Cancer. J Thorac Oncol 2021. [DOI: 10.1016/j.jtho.2021.01.266] [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: 10/21/2022]
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Kirk R, Ratcliffe A, Noonan G, Uosis-Martin M, Lyth D, Bardell-Cox O, Massam J, Schofield P, Hindley S, Jones DR, Maclean J, Smith A, Savage V, Mohmed S, Charrier C, Salisbury AM, Moyo E, Metzger R, Chalam-Judge N, Cheung J, Stokes NR, Best S, Craighead M, Armer R, Huxley A. Rational design, synthesis and testing of novel tricyclic topoisomerase inhibitors for the treatment of bacterial infections part 1. RSC Med Chem 2020; 11:1366-1378. [PMID: 34095844 DOI: 10.1039/d0md00174k] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2020] [Accepted: 08/07/2020] [Indexed: 12/17/2022] Open
Abstract
The alarming reduction in drug effectiveness against bacterial infections has created an urgent need for the development of new antibacterial agents that circumvent bacterial resistance mechanisms. We report here a series of DNA gyrase and topoisomerase IV inhibitors that demonstrate potent activity against a range of Gram-positive and selected Gram-negative organisms, including clinically-relevant and drug-resistant strains. In part 1, we present a detailed structure activity relationship (SAR) analysis that led to the discovery of our previously disclosed compound, REDX05931, which has a minimum inhibitory concentration (MIC) of 0.06 μg mL-1 against fluoroquinolone-resistant Staphylococcus aureus. Although in vitro hERG and CYP inhibition precluded further development, it validates a rational design approach to address this urgent unmet medical need and provides a scaffold for further optimisation, which is presented in part 2.
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Affiliation(s)
- R Kirk
- Redx Anti-Infectives Ltd, Alderley Park, Mereside Macclesfield SK10 4TG UK
| | - A Ratcliffe
- Redx Anti-Infectives Ltd, Alderley Park, Mereside Macclesfield SK10 4TG UK
| | - G Noonan
- Redx Anti-Infectives Ltd, Alderley Park, Mereside Macclesfield SK10 4TG UK
| | - M Uosis-Martin
- Redx Anti-Infectives Ltd, Alderley Park, Mereside Macclesfield SK10 4TG UK
| | - D Lyth
- Redx Anti-Infectives Ltd, Alderley Park, Mereside Macclesfield SK10 4TG UK
| | - O Bardell-Cox
- Redx Anti-Infectives Ltd, Alderley Park, Mereside Macclesfield SK10 4TG UK
| | - J Massam
- Redx Anti-Infectives Ltd, Alderley Park, Mereside Macclesfield SK10 4TG UK
| | - P Schofield
- Redx Anti-Infectives Ltd, Alderley Park, Mereside Macclesfield SK10 4TG UK
| | - S Hindley
- Redx Anti-Infectives Ltd, Alderley Park, Mereside Macclesfield SK10 4TG UK
| | - D R Jones
- Redx Anti-Infectives Ltd, Alderley Park, Mereside Macclesfield SK10 4TG UK
| | - J Maclean
- Redx Anti-Infectives Ltd, Alderley Park, Mereside Macclesfield SK10 4TG UK
| | - A Smith
- Redx Anti-Infectives Ltd, Alderley Park, Mereside Macclesfield SK10 4TG UK
| | - V Savage
- Redx Anti-Infectives Ltd, Alderley Park, Mereside Macclesfield SK10 4TG UK
| | - S Mohmed
- Redx Anti-Infectives Ltd, Alderley Park, Mereside Macclesfield SK10 4TG UK
| | - C Charrier
- Redx Anti-Infectives Ltd, Alderley Park, Mereside Macclesfield SK10 4TG UK
| | - A-M Salisbury
- Redx Anti-Infectives Ltd, Alderley Park, Mereside Macclesfield SK10 4TG UK
| | - E Moyo
- Redx Anti-Infectives Ltd, Alderley Park, Mereside Macclesfield SK10 4TG UK
| | - R Metzger
- Redx Anti-Infectives Ltd, Alderley Park, Mereside Macclesfield SK10 4TG UK
| | - N Chalam-Judge
- Redx Anti-Infectives Ltd, Alderley Park, Mereside Macclesfield SK10 4TG UK
| | - J Cheung
- Redx Anti-Infectives Ltd, Alderley Park, Mereside Macclesfield SK10 4TG UK
| | - N R Stokes
- Redx Anti-Infectives Ltd, Alderley Park, Mereside Macclesfield SK10 4TG UK
| | - S Best
- Redx Anti-Infectives Ltd, Alderley Park, Mereside Macclesfield SK10 4TG UK
| | - M Craighead
- Redx Anti-Infectives Ltd, Alderley Park, Mereside Macclesfield SK10 4TG UK
| | - R Armer
- Redx Anti-Infectives Ltd, Alderley Park, Mereside Macclesfield SK10 4TG UK
| | - A Huxley
- Redx Anti-Infectives Ltd, Alderley Park, Mereside Macclesfield SK10 4TG UK
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8
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Kirk R, Ratcliffe A, Noonan G, Uosis-Martin M, Lyth D, Bardell-Cox O, Massam J, Schofield P, Lyons A, Clare D, Maclean J, Smith A, Savage V, Mohmed S, Charrier C, Salisbury AM, Moyo E, Ooi N, Chalam-Judge N, Cheung J, Stokes NR, Best S, Craighead M, Armer R, Huxley A. Rational design, synthesis and testing of novel tricyclic topoisomerase inhibitors for the treatment of bacterial infections part 2. RSC Med Chem 2020; 11:1379-1385. [PMID: 34095845 PMCID: PMC8126889 DOI: 10.1039/d0md00175a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2020] [Accepted: 08/07/2020] [Indexed: 11/21/2022] Open
Abstract
Building on our previously-reported novel tricyclic topoisomerase inhibitors (NTTIs), we disclose the discovery of REDX07965, which has an MIC90 of 0.5 μg mL-1 against Staphylococcus aureus, favourable in vitro pharmacokinetic properties, selectivity versus human topoisomerase II and an acceptable toxicity profile. The results herein validate a rational design approach to address the urgent unmet medical need for novel antibiotics.
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Affiliation(s)
- R Kirk
- Redx Anti-Infectives Ltd Alderley Park Macclesfield SK10 4TG Cheshire UK
| | - A Ratcliffe
- Redx Anti-Infectives Ltd Alderley Park Macclesfield SK10 4TG Cheshire UK
| | - G Noonan
- Redx Anti-Infectives Ltd Alderley Park Macclesfield SK10 4TG Cheshire UK
| | - M Uosis-Martin
- Redx Anti-Infectives Ltd Alderley Park Macclesfield SK10 4TG Cheshire UK
| | - D Lyth
- Redx Anti-Infectives Ltd Alderley Park Macclesfield SK10 4TG Cheshire UK
| | - O Bardell-Cox
- Redx Anti-Infectives Ltd Alderley Park Macclesfield SK10 4TG Cheshire UK
| | - J Massam
- Redx Anti-Infectives Ltd Alderley Park Macclesfield SK10 4TG Cheshire UK
| | - P Schofield
- Redx Anti-Infectives Ltd Alderley Park Macclesfield SK10 4TG Cheshire UK
| | - A Lyons
- Redx Anti-Infectives Ltd Alderley Park Macclesfield SK10 4TG Cheshire UK
| | - D Clare
- Redx Anti-Infectives Ltd Alderley Park Macclesfield SK10 4TG Cheshire UK
| | - J Maclean
- Redx Anti-Infectives Ltd Alderley Park Macclesfield SK10 4TG Cheshire UK
| | - A Smith
- Redx Anti-Infectives Ltd Alderley Park Macclesfield SK10 4TG Cheshire UK
| | - V Savage
- Redx Anti-Infectives Ltd Alderley Park Macclesfield SK10 4TG Cheshire UK
| | - S Mohmed
- Redx Anti-Infectives Ltd Alderley Park Macclesfield SK10 4TG Cheshire UK
| | - C Charrier
- Redx Anti-Infectives Ltd Alderley Park Macclesfield SK10 4TG Cheshire UK
| | - A-M Salisbury
- Redx Anti-Infectives Ltd Alderley Park Macclesfield SK10 4TG Cheshire UK
| | - E Moyo
- Redx Anti-Infectives Ltd Alderley Park Macclesfield SK10 4TG Cheshire UK
| | - N Ooi
- Redx Anti-Infectives Ltd Alderley Park Macclesfield SK10 4TG Cheshire UK
| | - N Chalam-Judge
- Redx Anti-Infectives Ltd Alderley Park Macclesfield SK10 4TG Cheshire UK
| | - J Cheung
- Redx Anti-Infectives Ltd Alderley Park Macclesfield SK10 4TG Cheshire UK
| | - N R Stokes
- Redx Anti-Infectives Ltd Alderley Park Macclesfield SK10 4TG Cheshire UK
| | - S Best
- Redx Anti-Infectives Ltd Alderley Park Macclesfield SK10 4TG Cheshire UK
| | - M Craighead
- Redx Anti-Infectives Ltd Alderley Park Macclesfield SK10 4TG Cheshire UK
| | - R Armer
- Redx Anti-Infectives Ltd Alderley Park Macclesfield SK10 4TG Cheshire UK
| | - A Huxley
- Redx Anti-Infectives Ltd Alderley Park Macclesfield SK10 4TG Cheshire UK
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Farcot E, Best S, Edwards R, Belgacem I, Xu X, Gill P. Chaos in a ring circuit. Chaos 2019; 29:043103. [PMID: 31042954 DOI: 10.1063/1.5079941] [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] [Subscribe] [Scholar Register] [Received: 11/05/2018] [Accepted: 03/05/2019] [Indexed: 06/09/2023]
Abstract
A ring-shaped logic circuit is proposed here as a robust design for a True Random Number Generator (TRNG). Most existing TRNGs rely on physical noise as a source of randomness, where the underlying idealized deterministic system is simply oscillatory. The design proposed here is based on chaotic dynamics and therefore intrinsically displays random behavior, even in the ideal noise-free situation. The paper presents several mathematical models for the circuit having different levels of detail. They take the form of differential equations using steep sigmoid terms for the transfer functions of logic gates. A large part of the analysis is concerned with the hard step-function limit, leading to a model known in mathematical biology as a Glass network. In this framework, an underlying discrete structure (a state space diagram) is used to describe the likely structure of the global attractor for this system. The latter takes the form of intertwined periodic paths, along which trajectories alternate unpredictably. It is also invariant under the action of the cyclic group. A combination of analytical results and numerical investigations confirms the occurrence of symmetric chaos in this system, which when implemented in (noisy) hardware, should therefore serve as a robust TRNG.
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Affiliation(s)
- E Farcot
- School of Mathematical Sciences, University of Nottingham, United Kingdom
| | - S Best
- Rambus Inc., Sunnyvale, California, USA
| | - R Edwards
- Department of Mathematics and Statistics, University of Victoria, British Columbia, Canada
| | - I Belgacem
- Department of Mathematics and Statistics, University of Victoria, British Columbia, Canada
| | - X Xu
- Electrical and Computer Engineering, University of Illinois at Chicago, Chicago, Illinois, USA
| | - P Gill
- Sunnyvale, California 94085, USA
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Windon MJ, Waterboer T, Hillel AT, Chien W, Best S, Stewart C, Akst L, Troy T, Bender N, Miles B, Ryan WR, Mandal R, Pitman K, Eisele DW, Fakhry C, D'Souza G. Sex differences in HPV immunity among adults without cancer. Hum Vaccin Immunother 2019; 15:1935-1941. [PMID: 30650013 DOI: 10.1080/21645515.2019.1568157] [Citation(s) in RCA: 10] [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] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
The incidence of human papillomavirus (HPV)-associated head and neck cancers is rising, particularly among men. Whether observed epidemiological differences in sex are explained by differences in sexual exposure and/or by immune response is unclear. In this cross-sectional, multi-institutional study, seroprevalence of antibodies to HPV L1 capsid antigen was compared by patient characteristics among 374 adult patients without cancer. A significantly higher seroprevalence was observed among women compared with men for HPV16 (OR = 2.96, 95% CI = 1.21-7.21) and HPV18 (OR = 2.84, 95% CI = 1.06-7.60) L1 antibodies. This difference persisted for HPV16 after controlling for lifetime and recent sexual behavior. After controlling for sex, HPV16 and HPV18 L1 seroprevalence was also significantly associated with higher number of lifetime (HPV16 OR = 1.05, 95% CI = 1.01-1.08; HPV18 OR = 1.04, 95% CI = 1.01-1.08) and recent (HPV16 OR = 1.54, 95% CI = 1.15-2.07; HPV18 OR = 1.40, 95% CI = 1.07-1.82) oral but not vaginal sexual partners. These findings potentially suggest a more robust immune response to HPV16/18 among women compared with men that may not be explained by differences in number of sexual partners, and thereby presumably HPV exposure. The independent association of HPV16/18 L1 seroprevalence with higher number of oral sexual partners suggests a possible role for site of mucosal exposure in the HPV immune response.
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Affiliation(s)
- Melina J Windon
- a Department of Otolaryngology-Head and Neck Surgery, Johns Hopkins University, School of Medicine , Baltimore , MD , USA
| | - Tim Waterboer
- b Infections and Cancer Epidemiology, German Cancer Research Center (DKFZ) , Heidelberg , Germany
| | - Alexander T Hillel
- a Department of Otolaryngology-Head and Neck Surgery, Johns Hopkins University, School of Medicine , Baltimore , MD , USA
| | - Wade Chien
- a Department of Otolaryngology-Head and Neck Surgery, Johns Hopkins University, School of Medicine , Baltimore , MD , USA
| | - Simon Best
- a Department of Otolaryngology-Head and Neck Surgery, Johns Hopkins University, School of Medicine , Baltimore , MD , USA
| | - Charles Stewart
- a Department of Otolaryngology-Head and Neck Surgery, Johns Hopkins University, School of Medicine , Baltimore , MD , USA
| | - Lee Akst
- a Department of Otolaryngology-Head and Neck Surgery, Johns Hopkins University, School of Medicine , Baltimore , MD , USA
| | - Tanya Troy
- c Department of Epidemiology, Johns Hopkins University Bloomberg School of Public Health , Baltimore , MD , USA
| | - Noemi Bender
- b Infections and Cancer Epidemiology, German Cancer Research Center (DKFZ) , Heidelberg , Germany
| | - Brett Miles
- d Department of Otolaryngology Head and Neck Surgery, Icahn School of Medicine at Mount Sinai , New York , NY , USA
| | - William R Ryan
- e Head and Neck Surgery, Department of Otolaryngology, University of California San Francisco , San Francisco , CA , USA
| | - Rajarsi Mandal
- a Department of Otolaryngology-Head and Neck Surgery, Johns Hopkins University, School of Medicine , Baltimore , MD , USA
| | - Karen Pitman
- a Department of Otolaryngology-Head and Neck Surgery, Johns Hopkins University, School of Medicine , Baltimore , MD , USA
| | - David W Eisele
- a Department of Otolaryngology-Head and Neck Surgery, Johns Hopkins University, School of Medicine , Baltimore , MD , USA
| | - Carole Fakhry
- a Department of Otolaryngology-Head and Neck Surgery, Johns Hopkins University, School of Medicine , Baltimore , MD , USA.,c Department of Epidemiology, Johns Hopkins University Bloomberg School of Public Health , Baltimore , MD , USA.,f Bloomberg~Kimmel Institute for Cancer Immunotherapy, Sidney Kimmel Comprehensive Cancer Center, Johns Hopkins University School of Medicine , Baltimore , MD , USA
| | - Gypsyamber D'Souza
- a Department of Otolaryngology-Head and Neck Surgery, Johns Hopkins University, School of Medicine , Baltimore , MD , USA.,c Department of Epidemiology, Johns Hopkins University Bloomberg School of Public Health , Baltimore , MD , USA
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Gerber M, Best S, Meerstetter F, Isoard-Gautheur S, Gustafsson H, Bianchi R, Madigan DJ, Colledge F, Ludyga S, Holsboer-Trachsler E, Brand S. Cross-Sectional and Longitudinal Associations Between Athlete Burnout, Insomnia, and Polysomnographic Indices in Young Elite Athletes. J Sport Exerc Psychol 2018; 40:312-324. [PMID: 30514157 DOI: 10.1123/jsep.2018-0083] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
Few studies have examined the association between sleep and burnout symptoms in elite athletes. We recruited 257 young elite athletes (Mage = 16.8 years) from Swiss Olympic partner schools. Of these, 197 were reassessed 6 months later. Based on the first assessment, 24 participants with clinically relevant burnout symptoms volunteered to participate in a polysomnographic examination and were compared with 26 (matched) healthy controls. Between 12% and 14% of young elite athletes reported burnout symptoms of potential clinical relevance, whereas 4-11% reported clinically relevant insomnia symptoms. Athletes with clinically relevant burnout symptoms reported significantly more insomnia symptoms, more dysfunctional sleep-related cognitions, and spent less time in bed during weeknights (p < .05). However, no significant differences were found for objective sleep parameters. A cross-lagged panel analysis showed that burnout positively predicted self-reported insomnia symptoms. Cognitive-behavioral interventions to treat dysfunctional sleep-related cognitions might be a promising measure to reduce subjective sleep complaints among young elite athletes.
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12
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Best S. MTE01.01 GEMM of Lung Cancer. J Thorac Oncol 2018. [DOI: 10.1016/j.jtho.2018.08.047] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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13
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Best S, Long JC, Taylor N, Braithwaite J. ISQUA18-2411Implementation of Genomics: A New Frontier in Clinical Practice. Int J Qual Health Care 2018. [DOI: 10.1093/intqhc/mzy167.44] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- S Best
- Australian Institute of Health Innovation, Macquarie University, North Ryde
| | - J C Long
- Australian Institute of Health Innovation, Macquarie University, North Ryde
| | - N Taylor
- Cancer Council New South Wales, Sydney, Australia
| | - J Braithwaite
- Australian Institute of Health Innovation, Macquarie University, North Ryde
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14
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Best S, DeSouza D, Kersbergen A, Dayalan S, Tull D, Policheni A, Gray D, Ritchie M, McConville M, Sutherland K. PO-210 Synergy between the KEAP1/NRF2 and PI3K pathways drives non-small cell lung cancer with an altered metabolism. ESMO Open 2018. [DOI: 10.1136/esmoopen-2018-eacr25.728] [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: 11/03/2022] Open
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15
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Rouault-Pierre K, Mian SA, Goulard M, Abarrategi A, Di Tulio A, Smith AE, Mohamedali A, Best S, Nloga AM, Kulasekararaj AG, Ades L, Chomienne C, Fenaux P, Dosquet C, Mufti GJ, Bonnet D. Preclinical modeling of myelodysplastic syndromes. Leukemia 2017; 31:2702-2708. [PMID: 28663577 PMCID: PMC5729336 DOI: 10.1038/leu.2017.172] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2017] [Revised: 04/25/2017] [Accepted: 05/23/2017] [Indexed: 12/12/2022]
Abstract
Myelodysplastic syndromes (MDS) represent a heterogeneous group of hematological clonal disorders. Here, we have tested the bone marrow (BM) cells from 38 MDS patients covering all risk groups in two immunodeficient mouse models: NSG and NSG-S. Our data show comparable level of engraftment in both models. The level of engraftment was patient specific with no correlation to any specific MDS risk group. Furthermore, the co-injection of mesenchymal stromal cells (MSCs) did not improve the level of engraftment. Finally, we have developed an in vitro two-dimensional co-culture system as an alternative tool to in vivo. Using our in vitro system, we have been able to co-culture CD34+ cells from MDS patient BM on auto- and/or allogeneic MSCs over 4 weeks with a fold expansion of up to 600 times. More importantly, these expanded cells conserved their MDS clonal architecture as well as genomic integrity.
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Affiliation(s)
- K Rouault-Pierre
- Haematopoietic Stem Cell Laboratory, The Francis Crick Institute, London, UK
| | - S A Mian
- Haematopoietic Stem Cell Laboratory, The Francis Crick Institute, London, UK
- King’s College London School of Medicine, Department of Haematological Medicine, London, UK
| | - M Goulard
- INSERM, UMRS1131–University Paris Diderot, Saint Louis Hospital, Paris, France
| | - A Abarrategi
- Haematopoietic Stem Cell Laboratory, The Francis Crick Institute, London, UK
| | - A Di Tulio
- Haematopoietic Stem Cell Laboratory, The Francis Crick Institute, London, UK
| | - A E Smith
- King’s College London School of Medicine, Department of Haematological Medicine, London, UK
- King’s College Hospital, Department of Haematology, London, UK
| | - A Mohamedali
- King’s College London School of Medicine, Department of Haematological Medicine, London, UK
| | - S Best
- King’s College London School of Medicine, Department of Haematological Medicine, London, UK
| | - A-M Nloga
- Senior Haematology Department, Saint Louis Hospital, APHP, Paris, France
| | | | - L Ades
- Senior Haematology Department, Saint Louis Hospital, APHP, Paris, France
| | - C Chomienne
- INSERM, UMRS1131–University Paris Diderot, Saint Louis Hospital, Paris, France
- Cell Biology Department, Saint Louis Hospital, APHP, Paris, France
| | - P Fenaux
- INSERM, UMRS1131–University Paris Diderot, Saint Louis Hospital, Paris, France
- Senior Haematology Department, Saint Louis Hospital, APHP, Paris, France
| | - C Dosquet
- INSERM, UMRS1131–University Paris Diderot, Saint Louis Hospital, Paris, France
- Cell Biology Department, Saint Louis Hospital, APHP, Paris, France
| | - G J Mufti
- King’s College London School of Medicine, Department of Haematological Medicine, London, UK
- King’s College Hospital, Department of Haematology, London, UK
| | - D Bonnet
- Haematopoietic Stem Cell Laboratory, The Francis Crick Institute, London, UK
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16
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Bhamra I, Abet V, Armer R, Best S, Bingham M, Burrus L, Calcraft P, Campbell M, Galli L, Messenger K, Phillips C, Sargent L, Thompson B, Tuffnell A, Wright J. Novel Porcupine inhibitor RXC004: Potent efficacy in animal models of cancer through direct tumour targeting and immunomodulatory mechanisms. Eur J Cancer 2016. [DOI: 10.1016/s0959-8049(16)32898-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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17
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Gadkaree SK, Pandian V, Best S, Motz KM, Allen C, Kim Y, Akst L, Hillel AT. Laryngotracheal Stenosis: Risk Factors for Tracheostomy Dependence and Dilation Interval. Otolaryngol Head Neck Surg 2016; 156:321-328. [PMID: 28112014 DOI: 10.1177/0194599816675323] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Objective Laryngotracheal stenosis (LTS) is a fibrotic process that narrows the upper airway and has a significant impact on breathing and phonation. Iatrogenic injury from endotracheal and/or tracheostomy tubes is the most common etiology. This study investigates differences in LTS etiologies as they relate to tracheostomy dependence and dilation interval. Study Design Case series with chart review. Setting Single-center tertiary care facility. Subjects and Methods Review of adult patients with LTS was performed between 2004 and 2015. The association of patient demographics, comorbidities, disease etiology, and treatment modalities with patient outcomes was assessed. Multiple logistic regression analysis and Kaplan-Meier analysis were performed to determine factors associated with tracheostomy dependence and time to second procedure, respectively. Results A total of 262 patients met inclusion criteria. Iatrogenic patients presented with greater stenosis ( P = .023), greater length of stenosis ( P = .004), and stenosis farther from the vocal folds ( P < .001) as compared with other etiologies. Iatrogenic patients were more likely to be African American, use tobacco, and have obstructive sleep apnea, type II diabetes, hypertension, chronic obstructive pulmonary disease, or a history of stroke. Iatrogenic LTS (odds ratio [OR] = 3.1, 95% confidence interval [95% CI] = 1.2-8.2), Cotton-Myer grade 3-4 (OR = 2.6, 95% CI = 1.1-6.4), and lack of intraoperative steroids (OR = 2.9, 95% CI = 1.2-6.9) were associated with tracheostomy dependence. Nonsmokers, patients without tracheostomy, and idiopathic LTS patients had a significantly longer time to second dilation procedure. Conclusion Iatrogenic LTS presents with a greater disease burden and higher risk of tracheostomy dependence when compared with other etiologies of LTS. Comorbid conditions promoting microvascular injury-including smoking, COPD, and diabetes-were prevalent in the iatrogenic cohort. Changes in hospital practice patterns to promote earlier tracheostomy in high-risk patients could reduce the incidence of LTS.
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Affiliation(s)
- Shekhar K Gadkaree
- 1 Department of Otolaryngology-Head and Neck Surgery, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Vinciya Pandian
- 1 Department of Otolaryngology-Head and Neck Surgery, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Simon Best
- 1 Department of Otolaryngology-Head and Neck Surgery, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Kevin M Motz
- 1 Department of Otolaryngology-Head and Neck Surgery, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Clint Allen
- 1 Department of Otolaryngology-Head and Neck Surgery, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Young Kim
- 1 Department of Otolaryngology-Head and Neck Surgery, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Lee Akst
- 1 Department of Otolaryngology-Head and Neck Surgery, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Alexander T Hillel
- 1 Department of Otolaryngology-Head and Neck Surgery, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
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18
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Branski RC, Dion GR, Best S. Letter to the Editor: Concerning "Xenograft Model for Therapeutic Drug Testing in Recurrent Respiratory Papillomatosis". Ann Otol Rhinol Laryngol 2016; 125:947-948. [PMID: 27599839 DOI: 10.1177/0003489416663176] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Affiliation(s)
- Ryan C Branski
- Department of Otolaryngology, Head and Neck Surgery, New York University School of Medicine, New York, NY, USA
| | - Gregory R Dion
- Department of Otolaryngology, Head and Neck Surgery, New York University School of Medicine, New York, NY, USA
| | - Simon Best
- Department of Otolaryngology, Head and Neck Surgery, Johns Hopkins School of Medicine, Baltimore
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19
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Klapperich M, Wells S, Ziemlewicz T, Hinshaw J, Lubner M, Brace C, Abel E, Best S, Lee F. Percutaneous microwave ablation of 100 T1a renal cell carcinoma: short and intermediate term efficacy with emphasis on tumor complexity and mitigation of complications. J Vasc Interv Radiol 2016. [DOI: 10.1016/j.jvir.2015.12.213] [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: 11/29/2022] Open
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20
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Pandian V, Garg V, Antar R, Best S. Discharge Education and Caregiver Coping of Pediatric Patients with a Tracheostomy: Systematic Review. ORL Head Neck Nurs 2016; 34:17-27. [PMID: 27164767] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
AIM The aim of this review was to assess and synthesize current literature evaluating caregiver education and coping after children were discharged with a tracheostomy. BACKGROUND Tracheostomy tube placement is a transformative event for the child who receives it and the family members who care for the child. As a result, it is imperative to provide caregivers a comprehensive and effective education on how to care for the tracheostomy and how to cope with a tracheostomy. DESIGN A systematic review of literature was conducted to explore practices associated with tracheostomy education among caregivers of pediatric patients with a tracheostomy. METHODS A search of PubMed, CINAHL, and Web of Science revealed potential 501 articles using keywords, tracheostomy, tracheotomy, education, discharge, caregiver, and family coping. After reviewing them in a systematic fashion, 12 articles were identified that were pertinent to tracheostomy education. FINDINGS This review of literature showed that discrepancies existed in how discharge education was provided and the lack of knowledge regarding tracheostomy care among caregivers despite formal education. Moreover, the caregivers reported variations in their coping capabilities and quality of life while caring for their children with a tracheostomy tube. CONCLUSION Literature on discharge education regarding tracheostomy management among caregivers of children with a tracheostomy tube is limited. Studies report poor coping strategies and quality of life among caregivers of children with a tracheostomy tube. Studies have significant limitations. Further research is warranted to understand the current practices with discharge education and follow-up of these patients at home settings.
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21
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Francis HW, Papel I, Lina I, Koch W, Tunkel D, Fuchs P, Lin S, Kennedy D, Ruben R, Linthicum F, Marsh B, Best S, Carey J, Lane A, Byrne P, Flint P, Eisele DW. Otolaryngology-head and neck surgery at Johns Hopkins: The first 100 years (1914-2014). Laryngoscope 2015; 125 Suppl 9:S1-35. [PMID: 26297867 PMCID: PMC4696071 DOI: 10.1002/lary.25490] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/15/2015] [Indexed: 12/19/2022]
Affiliation(s)
- Howard W Francis
- Department of Otolaryngology-Head and Neck Surgery, The Johns Hopkins University, Baltimore, Maryland
| | - Ira Papel
- Department of Otolaryngology-Head and Neck Surgery, The Johns Hopkins University, Baltimore, Maryland
| | - Ioan Lina
- Department of Otolaryngology-Head and Neck Surgery, The Johns Hopkins University, Baltimore, Maryland
| | - Wayne Koch
- Department of Otolaryngology-Head and Neck Surgery, The Johns Hopkins University, Baltimore, Maryland
| | - David Tunkel
- Department of Otolaryngology-Head and Neck Surgery, The Johns Hopkins University, Baltimore, Maryland
| | - Paul Fuchs
- Department of Otolaryngology-Head and Neck Surgery, The Johns Hopkins University, Baltimore, Maryland
| | - Sandra Lin
- Department of Otolaryngology-Head and Neck Surgery, The Johns Hopkins University, Baltimore, Maryland
| | - David Kennedy
- the Department of Otolaryngology-Head and Neck Surgery, University of Pennsylvania, Philadelphia, Pennsylvania
| | - Robert Ruben
- the Departments ofOtorhinolaryngology-Head and Neck Surgery and Pediatrics, Albert Einstein College of Medicine Montefiore Medical Center, New York, New York
| | - Fred Linthicum
- the Department of Otolaryngology-Head and Neck Surgery, University of California at Los Angeles, Los Angeles, California
| | - Bernard Marsh
- Department of Otolaryngology-Head and Neck Surgery, The Johns Hopkins University, Baltimore, Maryland
| | - Simon Best
- Department of Otolaryngology-Head and Neck Surgery, The Johns Hopkins University, Baltimore, Maryland
| | - John Carey
- Department of Otolaryngology-Head and Neck Surgery, The Johns Hopkins University, Baltimore, Maryland
| | - Andrew Lane
- Department of Otolaryngology-Head and Neck Surgery, The Johns Hopkins University, Baltimore, Maryland
| | - Patrick Byrne
- Department of Otolaryngology-Head and Neck Surgery, The Johns Hopkins University, Baltimore, Maryland
| | - Paul Flint
- Department of Otolaryngology-Head and Neck Surgery, Oregon Health Sciences University, Portland, Oregon, U.S.A
| | - David W Eisele
- Department of Otolaryngology-Head and Neck Surgery, The Johns Hopkins University, Baltimore, Maryland
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22
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Pacheco PC, Karatayli-Ozgursoy S, Best S, Hillel A, Akst L. False vocal cord botulinum toxin injection for refractory muscle tension dysphonia: Our experience with seven patients. Clin Otolaryngol 2015; 40:60-4. [PMID: 25314339 DOI: 10.1111/coa.12333] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/05/2014] [Indexed: 11/28/2022]
Affiliation(s)
- P C Pacheco
- Otolaryngology-Head and Neck Surgery, Johns Hopkins Hospital, Baltimore, MD, USA
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23
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Wilson KM, Dick S, Einsiedel L, Best S. O17.4 Development and validation of a human t-cell lymphotropic virus type-1 proviral load assay. Br J Vener Dis 2015. [DOI: 10.1136/sextrans-2015-052270.174] [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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24
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Mohamedali AM, Gäken J, Ahmed M, Malik F, Smith AE, Best S, Mian S, Gaymes T, Ireland R, Kulasekararaj AG, Mufti GJ. High concordance of genomic and cytogenetic aberrations between peripheral blood and bone marrow in myelodysplastic syndrome (MDS). Leukemia 2015; 29:1928-38. [DOI: 10.1038/leu.2015.110] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2014] [Revised: 03/24/2015] [Accepted: 04/16/2015] [Indexed: 12/12/2022]
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25
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Mufti G, Best S, Lea N, Hellstrom-Lindberg E, Silverman L, Garcia-Manero G, Azarnia N, Petrone M, Snyder B, Gohring G. 111 MUTATIONAL PROFILE AND KARYOTYPIC ABNORMALITIES OF CLINICAL TRIAL PATIENTS WITH HIGHER-RISK MDS FOLLOWING FAILURE OF HYPOMETHYLATING AGENTS (HMAS): IMPACT ON RESPONSE TO RIGOSERTIB THERAPY. Leuk Res 2015. [DOI: 10.1016/s0145-2126(15)30112-0] [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: 12/01/2022]
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26
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Best S, Tate T, Noble B, Smith R, Tuft J, Tracey N, McCullugh A, Eley J, Black J, Stockton M, Cheesley A, Berry L, Burton C, Dechamps A, Stevens E, Penny A, McEnhill L, McNair A, Cupid B, Maeso B, Chapman D, McIlfatrick S, Nelson A, Sivell S, Baillie J, VanGodwin J, Candy B, Beaumont N, Cowan K. RESEARCH PRIORITY SETTING IN PALLIATIVE AND END OF LIFE CARE: THE JAMES LIND ALLIANCE APPROACH CONSULTING PATIENTS, CARERS AND CLINICIANS. BMJ Support Palliat Care 2015. [DOI: 10.1136/bmjspcare-2014-000838.3] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [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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27
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Ichimiya Y, Alluri K, Marcus C, Best S, Chung CH, Subramaniam RM. Imaging modality utilization trends in patients with stage III-IV oropharyngeal squamous cell carcinoma. Am J Nucl Med Mol Imaging 2015; 5:154-161. [PMID: 25973336 PMCID: PMC4396006] [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] [Subscribe] [Scholar Register] [Received: 06/09/2014] [Accepted: 11/07/2014] [Indexed: 06/04/2023]
Abstract
The objective of this study is to establish the utilization trends of CT, MRI, and FDG-PET/CT for evaluation of oropharyngeal squamous cell carcinoma (OPSCC) patients. A total of 173 patients with newly diagnosed stage III or IV OPSCC between 2003 and 2009 were included. Frequency of imaging modality use, divided into four time periods (2003-04, 2005-06, 2007-08 and 2009), was evaluated. For initial staging, percentage of PET/CT use was 64.6%, 87.5%, 94.1% and 96.3%, with an increasing trend (p < 0.001). The CT (p = 0.762) and MRI (p = 0.224) use demonstrated no change in trend. For post-treatment imaging, percentage of PET/CT use was 59.5%, 68.6%, 89.7% and 100%, with an increasing trend (p < 0.001). The CT use demonstrated a decreasing trend (p = 0.004) and MRI showed no trend change (p = 0.231). PET/CT is used with an increasing trend for initial staging and has become a central imaging modality for follow up evaluation after treatment, for advanced OPSCC.
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Affiliation(s)
- Yukako Ichimiya
- Russell H Morgan Department of Radiology and Radiological Sciences, Johns Hopkins University Baltimore, MD
| | - Krishna Alluri
- Russell H Morgan Department of Radiology and Radiological Sciences, Johns Hopkins University Baltimore, MD
| | - Charles Marcus
- Russell H Morgan Department of Radiology and Radiological Sciences, Johns Hopkins University Baltimore, MD
| | - Simon Best
- Department of Otolaryngology and Head and Neck Surgery, Johns Hopkins University Baltimore, MD
| | - Christine H Chung
- Department of Otolaryngology and Head and Neck Surgery, Johns Hopkins University Baltimore, MD ; Department of Medical Oncology, Johns Hopkins University Baltimore, MD
| | - Rathan M Subramaniam
- Russell H Morgan Department of Radiology and Radiological Sciences, Johns Hopkins University Baltimore, MD ; Department of Otolaryngology and Head and Neck Surgery, Johns Hopkins University Baltimore, MD ; Department of Medical Oncology, Johns Hopkins University Baltimore, MD ; Department of Health Policy and Management, Johns Hopkins University Baltimore, MD
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28
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Hillel AT, Karatayli-Ozgursoy S, Benke JR, Best S, Pacheco-Lopez P, Teets K, Starmer H, Akst LM. Voice quality in laryngotracheal stenosis: impact of dilation and level of stenosis. Ann Otol Rhinol Laryngol 2014; 124:413-8. [PMID: 25519815 DOI: 10.1177/0003489414564249] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
OBJECTIVE To assess the impact of suspension microlaryngoscopy with balloon dilation on voice-related quality of life (V-RQOL) in laryngotracheal stenosis (LTS). METHODS Retrospective chart review of LTS patients dilated at a tertiary-care academic hospital from 2010 to 2013. Data were obtained and then analyzed. LTS was stratified by (1) subglottic or tracheal stenosis and (2) multilevel stenosis (MLS; glottic and subglottic/tracheal). Pre- and postoperative V-RQOL and grade, roughness, breathiness, asthenia, strain (GRBAS) scores were compared. The number and frequency of balloon dilation procedures over the lifetime were secondary outcome variables. RESULTS Thirty-eight patients were identified: 26 subglottic/tracheal and 12 multilevel. Of these, 71.4% required multiple dilations, with greatest dilations/patient for multilevel stenosis (4.8). V-RQOL improved in the 27 patients with completed pre- and postoperative scores from a mean of 70.4 to 80 (P=.025). Pre/postoperative V-RQOLs for tracheal/subglottic (mean, 82.8/93.8) were significantly higher (P=.0001/.0001) than multilevel stenosis (48/55.3). Voice quality-of-life improvement was significant for the subglottic/tracheal cohort (P=.036) but not for the MLS group. GRBAS was performed pre- and postoperatively in 10 patients with improvement in all domains except breathiness. CONCLUSION Laryngotracheal stenosis is associated with dysphonia. Patients with glottic involvement have significantly worse voice quality of life than those with tracheal/subglottic stenosis. Endoscopic balloon dilation improves V-RQOL in patients with subglottic/tracheal stenosis.
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Affiliation(s)
- Alexander T Hillel
- Department of Otolaryngology and Head-Neck Surgery, Johns Hopkins Medical Institutions, Baltimore, MD, USA
| | - Selmin Karatayli-Ozgursoy
- Department of Otolaryngology and Head-Neck Surgery, Johns Hopkins Medical Institutions, Baltimore, MD, USA
| | - James R Benke
- Department of Otolaryngology and Head-Neck Surgery, Johns Hopkins Medical Institutions, Baltimore, MD, USA
| | - Simon Best
- Department of Otolaryngology and Head-Neck Surgery, Johns Hopkins Medical Institutions, Baltimore, MD, USA
| | - Paulette Pacheco-Lopez
- Department of Otolaryngology and Head-Neck Surgery, Johns Hopkins Medical Institutions, Baltimore, MD, USA
| | - Kristine Teets
- Department of Otolaryngology and Head-Neck Surgery, Johns Hopkins Medical Institutions, Baltimore, MD, USA
| | - Heather Starmer
- Department of Otolaryngology and Head-Neck Surgery, Johns Hopkins Medical Institutions, Baltimore, MD, USA
| | - Lee M Akst
- Department of Otolaryngology and Head-Neck Surgery, Johns Hopkins Medical Institutions, Baltimore, MD, USA
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29
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McNamara I, Howard J, Rayment A, Schalk R, Brooks R, Best S, Rushton N. Mechanical properties of morcellised bone graft with the addition of hydroxyapatite. J Mater Sci Mater Med 2014; 25:321-327. [PMID: 24390340 DOI: 10.1007/s10856-013-5085-0] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/03/2013] [Accepted: 10/25/2013] [Indexed: 06/03/2023]
Abstract
Mixtures of morcellised bone graft (MBG) and hydroxyapatite (HA) are frequently used in revision arthroplasty surgery. However, the changes in the mechanical properties from adding HA to MBG are unknown. This study used a uniaxial compression test to replicate impaction bone grafting and subsequent early postoperative weightbearing to investigate the effect of adding different proportion of HA to MBG. To achieve this aim, human MBG was subjected to increasing impaction forces and the apparent stiffness and creep for each stress level determined. Subsequently, increasing proportions porous and non porous HA were added to the MBG. The major findings were that the apparent stiffness for MBG increased and the associated creep decreased both with the application of increasing stress and with the addition of increasing proportions of HA. In conclusion, greater proportions of HA in the graft mixture improved the mechanical response compared with MBG impacted under the same force. This improvement replicated the properties of pure MBG under high axial stress. This study indicates that graft mixtures of MBG and HA can be tailormade for patients. The need for less impaction force in MBG:HA mixtures to obtain the same properties as pure MBG may decrease the risk of intraoperative fracture.
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Affiliation(s)
- I McNamara
- Norfolk and Norwich University Hospital NHS foundation trust, Norwich, NR4 7UY, UK,
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30
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Morgan R, Best S, Connor C, Madarang J, Johnson P. E-042 Case Based Review of the Pathophysiology of Internal Carotid Artery Pseudoaneurysm Coil Migration. J Neurointerv Surg 2013. [DOI: 10.1136/neurintsurg-2013-010870.100] [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: 11/04/2022]
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31
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Morgan R, Best S, Connor C, Johnson P, Madarang J. E-041 Is there an Interventional Role in Thyrotoxic Crisis? J Neurointerv Surg 2013. [DOI: 10.1136/neurintsurg-2013-010870.99] [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: 11/04/2022]
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32
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Kaouk JH, Autorino R, Kim FJ, Han DH, Lee SW, Yinghao S, Cadeddu JA, Derweesh IH, Richstone L, Cindolo L, Branco A, Greco F, Allaf M, Sotelo R, Liatsikos E, Stolzenburg JU, Rane A, White WM, Han WK, Haber GP, White MA, Molina WR, Jeong BC, Lee JY, Linhui W, Best S, Stroup SP, Rais-Bahrami S, Schips L, Fornara P, Pierorazio P, Giedelman C, Lee JW, Stein RJ, Rha KH. Laparoendoscopic single-site surgery in urology: worldwide multi-institutional analysis of 1076 cases. Int Braz J Urol 2011. [DOI: 10.1590/s1677-55382011000500017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Affiliation(s)
- JH Kaouk
- Glickman Urological & Kidney Institute, USA
| | - R Autorino
- Glickman Urological & Kidney Institute, USA
| | - FJ Kim
- Glickman Urological & Kidney Institute, USA
| | - DH Han
- Glickman Urological & Kidney Institute, USA
| | - SW Lee
- Glickman Urological & Kidney Institute, USA
| | - S Yinghao
- Glickman Urological & Kidney Institute, USA
| | - JA Cadeddu
- Glickman Urological & Kidney Institute, USA
| | | | | | - L Cindolo
- Glickman Urological & Kidney Institute, USA
| | - A Branco
- Glickman Urological & Kidney Institute, USA
| | - F Greco
- Glickman Urological & Kidney Institute, USA
| | - M Allaf
- Glickman Urological & Kidney Institute, USA
| | - R Sotelo
- Glickman Urological & Kidney Institute, USA
| | | | | | - A Rane
- Glickman Urological & Kidney Institute, USA
| | - WM White
- Glickman Urological & Kidney Institute, USA
| | - WK Han
- Glickman Urological & Kidney Institute, USA
| | - GP Haber
- Glickman Urological & Kidney Institute, USA
| | - MA White
- Glickman Urological & Kidney Institute, USA
| | - WR Molina
- Glickman Urological & Kidney Institute, USA
| | - BC Jeong
- Glickman Urological & Kidney Institute, USA
| | - JY Lee
- Glickman Urological & Kidney Institute, USA
| | - W Linhui
- Glickman Urological & Kidney Institute, USA
| | - S Best
- Glickman Urological & Kidney Institute, USA
| | - SP Stroup
- Glickman Urological & Kidney Institute, USA
| | | | - L Schips
- Glickman Urological & Kidney Institute, USA
| | - P Fornara
- Glickman Urological & Kidney Institute, USA
| | | | | | - JW Lee
- Glickman Urological & Kidney Institute, USA
| | - RJ Stein
- Glickman Urological & Kidney Institute, USA
| | - KH Rha
- Glickman Urological & Kidney Institute, USA
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McNamara IR, Rayment A, Brooks R, Best S, Rushton N. The effect of the addition of hydroxyapatite graft substitutes upon the hoop strain and subsequent subsidence of a femoral model during impaction bone grafting. J Mech Behav Biomed Mater 2011; 5:238-46. [PMID: 22100099 DOI: 10.1016/j.jmbbm.2011.08.027] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2011] [Revised: 08/31/2011] [Accepted: 08/31/2011] [Indexed: 11/25/2022]
Abstract
Impaction bone grafting using morcellised allograft can successfully restore bone stock in revision surgery. However, concerns exist regarding supply of bone and transmission of infection. Bone-graft extenders, such as tricalcium phosphate (TCP) and hydroxyapatite (HA), are used to minimise the use of donor bone. However, concerns exist around a reported increased risk of femoral fracture during impaction bone grafting with a 1:1 mixture of TCP/HA and morcellised bone graft (MBG) during impaction grafting in human cadaveric femora. Using a sawbones model, it was evaluated whether there was increased femoral cortical strain with a HA:MBG mixture during impaction grafting compared to MBG impacted at the same and a greater force. Subsequently the subsidence behaviour of the different graft mixes was compared by using a loaded femoral stem in an endurance test. It was demonstrated that the femora with the MBG:HA graft had greater cortical hoop stresses but improved subsidence behaviour compared to a graft composed of pure MBG impacted at the same force.
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Affiliation(s)
- I R McNamara
- Orthopaedic Research Unit, Addenbrooke's Hospital, Cambridge, CB1 1QQ, United Kingdom.
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Best S, Caillaud C, Thompson M. The effect of ageing and fitness on thermoregulatory response to high-intensity exercise. Scand J Med Sci Sports 2011; 22:e29-37. [DOI: 10.1111/j.1600-0838.2011.01384.x] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/04/2011] [Indexed: 11/28/2022]
Affiliation(s)
- S. Best
- Exercise Health and Performance Research Group; Faculty of Health Sciences; University of Sydney; Lidcombe; NSW; Australia
| | - C. Caillaud
- Exercise Health and Performance Research Group; Faculty of Health Sciences; University of Sydney; Lidcombe; NSW; Australia
| | - M. Thompson
- Exercise Health and Performance Research Group; Faculty of Health Sciences; University of Sydney; Lidcombe; NSW; Australia
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Hodges MR, Best S, Richerson GB. Altered ventilatory and thermoregulatory control in male and female adult Pet-1 null mice. Respir Physiol Neurobiol 2011; 177:133-40. [PMID: 21453797 DOI: 10.1016/j.resp.2011.03.020] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2011] [Revised: 03/17/2011] [Accepted: 03/22/2011] [Indexed: 11/15/2022]
Abstract
The integrity of the serotonin (5-HT) system is essential to normal respiratory and thermoregulatory control. Male and female transgenic mice lacking central 5-HT neurons (Lmx1b(f/f/p) mice) show a 50% reduction in the hypercapnic ventilatory response and insufficient heat generation when cooled (Hodges and Richerson, 2008a; Hodges et al., 2008b). Lmx1b(f/f/p) mice also show reduced body temperatures (T(body)) and O(2) consumption [Formula: see text] , and breathe less at rest and during hypoxia and hypercapnia when measured below thermoneutrality (24 °C), suggesting a role for 5-HT neurons in integrating ventilatory, thermal and metabolic control. Here, the hypothesis that Pet-1 null mice, which retain 30% of central 5-HT neurons, will demonstrate similar deficits in temperature and ventilatory control was tested. Pet-1 null mice had fewer medullary tryptophan hydroxylase-immunoreactive (TPH(+)) neurons compared to wild type (WT) mice, particularly in the midline raphé. Female (but not male) Pet-1 null mice had lower baseline ventilation (V(E)), breathing frequency (f), [Formula: see text] and T(body) relative to female WT mice (P < 0.05). In addition, V(E) and [Formula: see text] were decreased in male and female Pet-1 null mice during hypoxia and hypercapnia (P < 0.05), but only male Pet-1 null mice showed a significant deficit in the hypercapnic ventilatory response when expressed as % of control (P < 0.05). Finally, male and female Pet-1 null mice showed significant decreases in T(body) when externally cooled to 4 °C. These data demonstrate that a moderate loss of 5-HT neurons leads to a modest attenuation of mechanisms defending body temperature, and that there are gender differences in the contributions of 5-HT neurons to ventilatory and thermoregulatory control.
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Affiliation(s)
- Matthew R Hodges
- Departments of Neurology and Cellular & Molecular Physiology, Yale University School of Medicine, New Haven, CT 06520, United States.
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36
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Kiupel M, Webster JD, Bailey KL, Best S, DeLay J, Detrisac CJ, Fitzgerald SD, Gamble D, Ginn PE, Goldschmidt MH, Hendrick MJ, Howerth EW, Janovitz EB, Langohr I, Lenz SD, Lipscomb TP, Miller MA, Misdorp W, Moroff S, Mullaney TP, Neyens I, O'Toole D, Ramos-Vara J, Scase TJ, Schulman FY, Sledge D, Smedley RC, Smith K, W Snyder P, Southorn E, Stedman NL, Steficek BA, Stromberg PC, Valli VE, Weisbrode SE, Yager J, Heller J, Miller R. Proposal of a 2-tier histologic grading system for canine cutaneous mast cell tumors to more accurately predict biological behavior. Vet Pathol 2010; 48:147-55. [PMID: 21062911 DOI: 10.1177/0300985810386469] [Citation(s) in RCA: 324] [Impact Index Per Article: 23.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Currently, prognostic and therapeutic determinations for canine cutaneous mast cell tumors (MCTs) are primarily based on histologic grade. However, the use of different grading systems by veterinary pathologists and institutional modifications make the prognostic value of histologic grading highly questionable. To evaluate the consistency of microscopic grading among veterinary pathologists and the prognostic significance of the Patnaik grading system, 95 cutaneous MCTs from 95 dogs were graded in a blinded study by 28 veterinary pathologists from 16 institutions. Concordance among veterinary pathologists was 75% for the diagnosis of grade 3 MCTs and less than 64% for the diagnosis of grade 1 and 2 MCTs. To improve concordance among pathologists and to provide better prognostic significance, a 2-tier histologic grading system was devised. The diagnosis of high-grade MCTs is based on the presence of any one of the following criteria: at least 7 mitotic figures in 10 high-power fields (hpf); at least 3 multinucleated (3 or more nuclei) cells in 10 hpf; at least 3 bizarre nuclei in 10 hpf; karyomegaly (ie, nuclear diameters of at least 10% of neoplastic cells vary by at least two-fold). Fields with the highest mitotic activity or with the highest degree of anisokaryosis were selected to assess the different parameters. According to the novel grading system, high-grade MCTs were significantly associated with shorter time to metastasis or new tumor development, and with shorter survival time. The median survival time was less than 4 months for high-grade MCTs but more than 2 years for low-grade MCTs.
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Affiliation(s)
- M Kiupel
- Michigan State University, Department of Pathobiology and Diagnostic Investigation, Diagnostic Center for Population and Animal Health, 4125 Beaumont Road, Lansing, MI 48910, USA.
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Zou S, Ireland D, Brooks RA, Rushton N, Best S. The effects of silicate ions on human osteoblast adhesion, proliferation, and differentiation. J Biomed Mater Res B Appl Biomater 2009; 90:123-30. [PMID: 19194862 DOI: 10.1002/jbm.b.31262] [Citation(s) in RCA: 53] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Silicon has been shown to have important effects on skeletal development and repair, and soluble silicate ions have been found to stimulate the expression of type-I collagen in osteoblast-like cell cultures. Furthermore, silicon has been incorporated into the hydroxyapatite lattice and enhanced metabolic activity of human osteosarcoma cells was observed when cells were cultured on this material. In vivo assessments have demonstrated enhanced bioactivity of silicon-substituted hydroxyapatite (Si-HA) over pure HA. However, detailed mechanisms for the stimulative effects of Si-HA have not been described. In this study, we found that silicon substitution into hydroxyapatite affects the adhesion of human osteoblast-like cells (HOBs) in culture, with 0.8 wt % silicon substitution being optimal. In addition, metabolic activity and proliferation of HOBs were increased by supplementation of the growth medium with 30 microM silicon. It was determined that this response may depend on the proportion of cells at different stages of differentiation within the cultures.
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Affiliation(s)
- S Zou
- Department of Material Science and Metallurgy, University of Cambridge, Cambridge, United Kingdom.
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Sedaghat AR, Zhang Z, Begum S, Palermo R, Best S, Ulmer KM, Levine M, Zinreich E, Messing BP, Gold D, Wu AA, Niparko KJ, Kowalski J, Hirata RM, Saunders JR, Westra WH, Pai SI. Prognostic significance of human papillomavirus in oropharyngeal squamous cell carcinomas. Laryngoscope 2009; 119:1542-9. [DOI: 10.1002/lary.20533] [Citation(s) in RCA: 113] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Best S, Ralston A, McKenzie D, Suchowerska N. Effect of scatter material on diode detector performance forin vivodosimetry. Phys Med Biol 2007; 53:89-97. [DOI: 10.1088/0031-9155/53/1/006] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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De Carlos A, Lusquiños F, Pou J, León B, Pérez-Amor M, Driessens FCM, Hing K, Best S, Bonfield W. In vitro testing of Nd:YAG laser processed calcium phosphate coatings. J Mater Sci Mater Med 2006; 17:1153-60. [PMID: 17122931 DOI: 10.1007/s10856-006-0543-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/01/2005] [Accepted: 02/09/2006] [Indexed: 05/12/2023]
Abstract
Nd:YAG laser cladding is a new method for deposition of a calcium phosphate onto metallic surfaces of interest in implantology. The aim of this study was to compare the biologic response of MG-63 human osteoblast-like cells grown on Ti-6Al-4V substrates coated with a calcium phosphate layer applied using different methods: plasma spraying as reference material and Nd:YAG laser cladding as test material. Tissue culture polystyrene was used as negative control. The Nd:YAG laser clad material showed a behaviour similar to the reference material, plasma spray, respective to cell morphology (SEM observations), cell proliferation (AlamarBlue assay) and cytotoxicity of extracts (MTT assay). Proliferation, as measured by the AlamarBlue assay, showed little difference in the metabolic activity of the cells on the materials over an 18 day culture period. There were no significant differences in the cellular growth response on the test material when compared to the ones exhibited by the reference material. In the solvent extraction test all the extracts had some detrimental effect on cellular activity at 100% concentration, although cells incubated in the test material extract showed a proliferation rate similar to that of the reference material. To better understand the scope of these results it should be taken into account that the Nd:YAG clad coating has recently been developed. The fact that its in vitro performance is comparable to that produced by plasma spray, a material commercially available for more than ten years, indicates that this new laser based method could be of commercial interest in the near future.
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Affiliation(s)
- A De Carlos
- Dpto. de Bioquímica, Genética e Inmunología, Universidade de Vigo, Vigo, Spain
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Monga M, Weiland D, Kim J, Best S, Lee C, Hendlin K, Anderson K. UP-02.100. Urology 2006. [DOI: 10.1016/j.urology.2006.08.845] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Ercole B, Lee C, Best S, Fallon E, Skenazy J, Monga M. Minimally Invasive Therapy for Benign Prostatic Hyperplasia: Practice Patterns in Minnesota. J Urol 2006. [DOI: 10.1016/s0022-5347(05)01028-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Affiliation(s)
- B. Ercole
- Department of Urologic Surgery, University of Minnesota, Minneapolis, Minnesota
| | - C. Lee
- Department of Urologic Surgery, University of Minnesota, Minneapolis, Minnesota
| | - S. Best
- Department of Urologic Surgery, University of Minnesota, Minneapolis, Minnesota
| | - E. Fallon
- Department of Urologic Surgery, University of Minnesota, Minneapolis, Minnesota
| | - J. Skenazy
- Department of Urologic Surgery, University of Minnesota, Minneapolis, Minnesota
| | - M. Monga
- Department of Urologic Surgery, University of Minnesota, Minneapolis, Minnesota
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Abstract
The biological mechanisms controlling complex quantitative traits are likely to be affected by interactions between genetic factors, sometimes referred to as epistasis. The identification of interacting loci through genetic analyse faces many challenges, and few examples of replicated findings of interaction exist for humans and model system organisms. The replication of an interaction, or the non-independence, of two quantitative trait loci (QTL) affecting the developmental switch from the expression of fetal to adult haemoglobin is reported here. Fetal haemoglobin expression in adults is a highly heritable, yet complex, phenotype. Using a sample of 874 dizygotic twin pairs of European descent, we found linkage to a QTL on chromosome 8 to be conditional on the twin pairs' genotypes at a polymorphism in the beta-globin complex; an interaction originally identified in a large Asian Indian kindred. The beta-globin polymorphism has been previously shown to be associated with fetal haemoglobin levels in adults. This study reports the first known replication of a genetic interaction between QTLs influencing a complex human trait.
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Affiliation(s)
- C Garner
- Epidemiology Division, Department of Medicine, University of California-Irvine, Irvine, CA 92697, USA.
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Abstract
The OneDose Patient Dosimetry System (Sicel Technologies) is a new dosimeter based on metal oxide semiconductor field-effect transistor technology and designed for the in vivo measurement of patient dose during radiotherapy. In vivo dosimetry for total body irradiation (TBI) is challenging due to the extended treatment distance, low dose rates and beam spoilers. Phantom results confirm the suitability of the dosimeter for TBI in terms of inherent build-up, post-irradiation fading, accuracy, reproducibility, linearity and temperature dependence. Directional dependence is significant and should be taken into account. The OneDose dosimeters were also trialed in vivo for two TBI patients and the dose measured compared to conventional dosimeter measurements using an ionization chamber and thermoluminescent dosimeters (TLD), with agreement to within 2.2% and 3.9%, respectively. Phantom and patient results confirm that the OneDose patient dosimetry system is a practical and convenient alternative to TLDs for TBI in vivo dosimetry. For increased confidence in results with this dosimeter, we recommend that two dosimeters be used for each site of interest.
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Affiliation(s)
- S Best
- Department of Radiation Oncology, Royal Prince Alfred Hospital, Camperdown, Australia.
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Porter A, Patel N, Brooks R, Best S, Rushton N, Bonfield W. Effect of carbonate substitution on the ultrastructural characteristics of hydroxyapatite implants. J Mater Sci Mater Med 2005; 16:899-907. [PMID: 16167098 DOI: 10.1007/s10856-005-4424-1] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/05/2004] [Accepted: 11/17/2004] [Indexed: 05/04/2023]
Abstract
Carbonate ion substitution has been shown to be beneficial for increasing the amount of in vivo osseointegration to hydroxyapatite (HA). Nevertheless, mechanisms by which carbonate ions increase in vivo bioactivity are not fully understood. Sintered granules of HA and carbonate-substituted hydroxyapatite (CHA) were implanted for 6 and 12 weeks in an ovine model. Samples containing the bone-implant interface were prepared for transmission electron microscopy (TEM) and TEM was used to compare the in vivo reactivity of sintered granules of HA and CHA. The current findings demonstrated that CHA (1.2 and 2.05 wt.%) is more soluble than pure HA in vivo. More dissolution was observed from the CHA, at the bone-implant interface and within the implant, when compared to pure HA. A less crystalline phase was formed between the 2.05 wt.% CHA and bone at 12 weeks in vivo. Bone surrounding both the pure HA and 1.2 wt.% CHA was relatively disorganised at 12 weeks. In comparison, bone surrounding the 2.05 wt.% CHA was considerably more organised and in many regions collagen fibrils were present. Despite increased quality of bone surrounding 2.05 wt.% CHA, compared to 1.2 wt.% CHA, the amount of dissolution from both materials was similar.
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Affiliation(s)
- A Porter
- Department of Materials Science and Metallurgy, University of Cambridge, Cambridge, CB2 3QZ, UK.
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Abstract
AIM To evaluate the torsional cyclic fatigue characteristics and specifically the endurance limit (EL) of a nickel-titanium rotary instrument. METHODOLOGY Size 30.06 taper ProFile instruments were evaluated. The equipment was assembled according to the ANSI/ADA Specification No. 28. The motor was programmed to repeatedly rotate to a selected deflection angle (DA) and then return to zero (cycle). Testing started at 200 degrees and was continued at decreasing angles until 10(6) cycles were reached without instrument fracture. Ten instruments were tested at each DA. The mean log number of cycles to fracture and standard deviation were determined for each DA at which fracture occurred. The DA at which 10(6) cycles were reached without instrument fracture corresponded by definition to the EL. Analysis of variance and pairwise comparisons using Duncan's multiple range test were performed to detect significant differences among the mean log number of cycles of the different DA. Significance was determined at the 95% confidence level. RESULTS Instruments cycled at larger DA consistently demonstrated fewer cycles to fracture than those cycled at smaller DA. The differences among the mean log number of cycles of the different DA were statistically significant (P < 0.001). Cycles of 10(6) were completed without instrument fracture at 2.5 degrees. CONCLUSIONS A torsional fatigue profile was generated for a specific NiTi rotary instrument. The EL was 2.5 degrees.
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Affiliation(s)
- S Best
- Department of Endodontics, Faculty of Dentistry, University of Toronto, Toronto, Ontario, Canada
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Carson AJ, Best S, Postma K, Stone J, Warlow C, Sharpe M. The outcome of neurology outpatients with medically unexplained symptoms: a prospective cohort study. J Neurol Neurosurg Psychiatry 2003; 74:897-900. [PMID: 12810775 PMCID: PMC1738573 DOI: 10.1136/jnnp.74.7.897] [Citation(s) in RCA: 62] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
BACKGROUND In a previous cross sectional study of 300 consecutive new attenders at neurology outpatient clinics, 90 were detected with symptoms that were rated as "not at all" or only "somewhat" explained by organic disease. OBJECTIVE To report a follow up study of this cohort. METHODS Patients were reinterviewed by telephone eight months after their initial assessment. They were asked to rate their overall improvement on a clinical global improvement scale, and their health status on the medical outcome short form 36 item scale (SF-36). The PRIME MD interview was administered to determine psychiatric diagnoses. Neurological and primary care records were reviewed for any changes in diagnostic opinion during the follow up period. RESULTS Of the 90 eligible patients, 66 (73%) participated in follow up. Among these, five (8%) rated themselves as "much worse," four (6%) as "somewhat worse," 27 (40%) as "just the same," 15 (23%) as "somewhat better," and 15 (23%) as "much better." There were no cases in which an organic cause for the presenting complaint was uncovered during the follow up period. Poorer physical function at baseline was the only predictor of poorer outcome at follow up. CONCLUSIONS Over half the patients who presented to neurologists with symptoms that were rated as largely or completely medically unexplained had not improved eight months later. In no case was a disease explanation for the original presenting symptoms subsequently identified.
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Affiliation(s)
- A J Carson
- Robert Fergusson Unit, Royal Edinburgh Hospital, Edinburgh, UK.
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49
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Lusquiños F, De Carlos A, Pou J, Arias JL, Boutinguiza M, León B, Pérez-Amor M, Driessens FCM, Hing K, Gibson I, Best S, Bonfield W. Calcium phosphate coatings obtained by Nd:YAG laser cladding: physicochemical and biologic properties. J Biomed Mater Res A 2003; 64:630-7. [PMID: 12601774 DOI: 10.1002/jbm.a.10440] [Citation(s) in RCA: 65] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
The plasma spray (PS) technique is the most popular method commercially in use to produce calcium phosphate (CaP) coatings to promote fixation and osteointegration of the cementless prosthesis. Nevertheless, PS has some disadvantages, such as the poor coating-to-substrate adhesion, low mechanical strength, and brittleness of the coating. In order to overcome the drawbacks of plasma spraying, we introduce in this work a new method to apply a CaP coating on a Ti alloy using a well-known technique in the metallurgical field: laser surface cladding. The physicochemical characterization of the coatings has been carried out by means of X-ray diffraction (XRD), scanning electron microscopy (SEM), and energy dispersive X-ray analysis (EDX). The biologic properties of the coatings have been assessed in vitro with human osteoblast-like MG-63 cells. The overall results of this study affirm that the Nd:YAG laser cladding technique is a promising method in the biomedical field.
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Affiliation(s)
- F Lusquiños
- Dpto. Física Aplicada, Universidade de Vigo, Vigo, Spain
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Kinne G, Elsässer D, Best S, Jost S, Zschache R. [Regional networking of medical and vocational rehabilitation-- the bad Krozingen model]. Rehabilitation (Stuttg) 2002; 41:336-42. [PMID: 12375215 DOI: 10.1055/s-2002-34567] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
Regional networking facilitates flexible and individual integration of vocational programmes in medical rehabilitation. We present a pilot project of Theresienklinik II in cooperation with the Education centre for occupation and health (Bildungszentrum Beruf und Gesundheit) in Bad Krozingen. Orthopaedic and cardiac patients who are in danger to lose their capacity to work, participate in an integrated vocational reorientation programme during extended medical rehabilitation. The aim of the pilot project is an early assessment of motivation, work hardening, aptitude and interest, in order to accelerate vocational retraining and reintegration. Within one year 30 patients participated in the programme. Presented are the contents and course of the pilot project. First results show a high patient satisfaction with the programme.
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Affiliation(s)
- G Kinne
- Bildungszentrum Beruf und Gesundheit, Bad Krozingen, Germany.
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