1
|
Michailidou E, Korda A, Wyss T, Bardins S, Schneider E, Morrison M, Wagner F, Caversaccio MD, Mantokoudis G. The value of saccade metrics and VOR gain in detecting a vestibular stroke. J Vestib Res 2024; 34:49-61. [PMID: 38160379 DOI: 10.3233/ves-230083] [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] [Indexed: 01/03/2024]
Abstract
OBJECTIVE A normal video Head Impulse Test is the gold standard in the emergency department to rule-in patients with an acute vestibular syndrome and a stroke. We aimed to compare the diagnostic accuracy of vHIT metrics regarding the vestibulo-ocular reflex gain and the corrective saccades in detecting vestibular strokes. METHODS Prospective cross-sectional study (convenience sample) of patients presenting with acute vestibular syndrome in the emergency department of a tertiary referral centre between February 2015 and May 2020. We screened 1677 patients and enrolled 76 patients fulfilling the inclusion criteria of acute vestibular syndrome. All patients underwent video head impulse test with automated and manual data analysis. A delayed MRI served as a gold standard for vestibular stroke confirmation. RESULTS Out of 76 patients, 52 were diagnosed with acute unilateral vestibulopathy and 24 with vestibular strokes. The overall accuracy of detecting stroke with an automated vestibulo-ocular reflex gain was 86.8%, compared to 77.6% for cumulative saccade amplitude and automatic saccade mean peak velocity measured by an expert and 71% for cumulative saccade amplitude and saccade mean peak velocity measured automatically. Gain misclassified 13.1% of the patients as false positive or false negative, manual cumulative saccade amplitude and saccade mean peak velocity 22.3%, and automated cumulative saccade amplitude and saccade mean peak velocity 28.9% respectively. CONCLUSIONS We found a better accuracy of video head impulse test for the diagnosis of vestibular strokes when using the vestibulo-ocular reflex gain than using saccade metrics. Nevertheless, saccades provide an additional and important information for video head impulse test evaluation. The automated saccade detection algorithm is not yet perfect compared to expert analysis, but it may become a valuable tool for future non-expert video head impulse test evaluations.
Collapse
Affiliation(s)
- Efterpi Michailidou
- Department of Otorhinolaryngology, Head and Neck Surgery, Inselspital, University Hospital Bern and University of Bern, Bern, Switzerland
| | - Athanasia Korda
- Department of Otorhinolaryngology, Head and Neck Surgery, Inselspital, University Hospital Bern and University of Bern, Bern, Switzerland
| | - Thomas Wyss
- Department of Otorhinolaryngology, Head and Neck Surgery, Inselspital, University Hospital Bern and University of Bern, Bern, Switzerland
| | - Stanislav Bardins
- Institute of Medical Technology, Brandenburg University of Technology Cottbus - Senftenberg, Cottbus, Germany
| | - Erich Schneider
- Institute of Medical Technology, Brandenburg University of Technology Cottbus - Senftenberg, Cottbus, Germany
| | - Miranda Morrison
- Department of Otorhinolaryngology, Head and Neck Surgery, Inselspital, University Hospital Bern and University of Bern, Bern, Switzerland
| | - Franca Wagner
- University Institute of Diagnostic and Interventional Neuroradiology, Inselspital, University Hospital Bern and University of Bern, Bern, Switzerland
| | - Marco D Caversaccio
- Department of Otorhinolaryngology, Head and Neck Surgery, Inselspital, University Hospital Bern and University of Bern, Bern, Switzerland
| | - Georgios Mantokoudis
- Department of Otorhinolaryngology, Head and Neck Surgery, Inselspital, University Hospital Bern and University of Bern, Bern, Switzerland
| |
Collapse
|
2
|
Nikles F, Kerkeni H, Zamaro E, Korda A, Wagner F, Sauter TC, Kalla R, Morrison M, Mantokoudis G. Do monosymptomatic stroke patients with dizziness present a vestibular syndrome without nystagmus? An underestimated entity. Eur J Neurol 2024; 31:e16066. [PMID: 37738525 DOI: 10.1111/ene.16066] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2023] [Revised: 09/04/2023] [Accepted: 09/04/2023] [Indexed: 09/24/2023]
Abstract
BACKGROUND AND PURPOSE Vestibular symptoms are common in emergency department (ED) patients and have various causes, including stroke. Accurate identification of stroke in patients with vestibular symptoms is crucial for timely management. We conducted a prospective cross-sectional study from 2015 to 2019 to determine stroke prevalence and associated symptoms in ED patients with vestibular symptoms, aiming to improve diagnosis and outcomes. METHODS As part of the DETECT project, we screened 1647 ED patients with acute vestibular symptoms. Following a retrospective analysis of 961 head and neck magnetic resonance imaging (MRI) scans, we included 122 confirmed stroke cases and assessed them for vestibular signs and symptoms. RESULTS Stroke prevalence in dizzy patients was 13% (122/961 MRI scans). Most patients (95%) presented with acute vestibular symptoms with or without nystagmus, whereas 5% had episodic vestibular syndrome (EVS). Nystagmus was present in 50% of stroke patients. Eighty percent had a purely posterior circulation stroke, and nystagmus was absent in 46% of these patients. Seven patients (6%) had lesions in both the anterior and posterior circulation. Vertigo was experienced by 52% regardless of territory. CONCLUSIONS A stroke was identified in 13% of ED patients presenting with acute vestibular symptoms. In 5%, it was EVS. Most strokes were in the posterior circulation territory; vertigo occurred with similar frequency in anterior and posterior circulation stroke, and absence of nystagmus was common in both.
Collapse
Affiliation(s)
- Florence Nikles
- Department of Otorhinolaryngology, Head and Neck Surgery, Inselspital, University Hospital Bern and University of Bern, Bern, Switzerland
| | - Hassen Kerkeni
- Department of Neurology, Inselspital, University Hospital Bern and University of Bern, Bern, Switzerland
| | - Ewa Zamaro
- Department of Otorhinolaryngology, Head and Neck Surgery, Inselspital, University Hospital Bern and University of Bern, Bern, Switzerland
| | - Athanasia Korda
- Department of Otorhinolaryngology, Head and Neck Surgery, Inselspital, University Hospital Bern and University of Bern, Bern, Switzerland
| | - Franca Wagner
- University Institute of Diagnostic and Interventional Neuroradiology, Inselspital, University Hospital Bern and University of Bern, Bern, Switzerland
| | - Thomas C Sauter
- Department of Emergency Medicine, Inselspital, University Hospital Bern and University of Bern, Bern, Switzerland
| | - Roger Kalla
- Department of Neurology, Inselspital, University Hospital Bern and University of Bern, Bern, Switzerland
| | - Miranda Morrison
- Department of Otorhinolaryngology, Head and Neck Surgery, Inselspital, University Hospital Bern and University of Bern, Bern, Switzerland
| | - Georgios Mantokoudis
- Department of Otorhinolaryngology, Head and Neck Surgery, Inselspital, University Hospital Bern and University of Bern, Bern, Switzerland
| |
Collapse
|
3
|
Weatherly C, Carag J, Zohdy S, Morrison M. The mental health impacts of human-ecosystem-animal relationships: A systematic scoping review of Eco-, Planetary, and One Health approaches. One Health 2023; 17:100621. [PMID: 38024273 PMCID: PMC10665142 DOI: 10.1016/j.onehlt.2023.100621] [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] [Subscribe] [Scholar Register] [Received: 02/03/2023] [Revised: 07/31/2023] [Accepted: 08/21/2023] [Indexed: 12/01/2023] Open
Abstract
The threats to human and animal health, biodiversity conservation, and our living planet's future are ever-present and increasingly more severe due to climate change and environmental degradation. There is an emerging discourse exploring the mental health dimensions contained within these changes. To better understand and respond to these impacts requires novel and creative methodological approaches built on conceptual frameworks that integrate perspectives from the social and natural sciences. Three of the most influential interdisciplinary frameworks at the human-animal-ecosystem interface include: One Health, EcoHealth, and Planetary Health. These frameworks report mental health as an integral component within overall health-related outcomes. However, a comprehensive synthesis of the state of the literature that examines how mental health is explored within these approaches does not currently exist. A systematic scoping review was therefore conducted to obtain clear understandings of patterns, gaps, and broad themes, and to highlight future research needs and considerations. Standardized PRISMA guidelines, including explicitly defined inclusion/exclusion criteria and dual screening/extractions, were used. 13 papers were included: seven using the One Health Framework, with Planetary and EcoHealth each represented by three. Trends observed include a predominate focus on companion animals as interventions, "sense of place" used as a component of mental well-being, and non-physical health-related measurements of animal well-being as an outcome within One Health research. The lack in retrieved studies also highlight the dearth in literature on mental health as a pillar of these three well established frameworks. Compiling what is known in the evidence-base as a launching point for scientific engagement, this review describes guidance for investigators on how to conduct mental health research within these framework parameters so that future studies can elucidate mechanisms underpinning the intersections between the biosphere and human mental-health and data-driven interventions and policy recommendations that simultaneously address mental health and global change can be proposed and enacted.
Collapse
Affiliation(s)
- C. Weatherly
- University of Georgia School of Social Work, 279 Williams St, Athens, GA 30602, United States of America
| | - J. Carag
- Emory University School of Medicine, 100 Woodruff Circle, Atlanta, GA 30322, United States of America
| | - S. Zohdy
- College of Forestry, Wildlife, and Environment and College of Veterinary Medicine, Auburn University, Auburn, AL 36849, United States of America
| | - M. Morrison
- St. Louis University School of Social Work, Tegeler Hall, 3550 Lindell Blvd, St. Louis, MO 63103, United States of America
| |
Collapse
|
4
|
Wert T, Morrison M, Heeney S. Conversion Between Sirolimus and Everolimus in Orthotopic Heart Transplant (OHT) Recipients. J Heart Lung Transplant 2023. [DOI: 10.1016/j.healun.2023.02.1361] [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: 04/05/2023] Open
|
5
|
Wyssen G, Morrison M, Korda A, Wimmer W, Otero-Millan J, Ertl M, Szukics AA, Wyss T, Wagner F, Caversaccio MD, Mantokoudis G, Mast FW. Measuring the Influence of Magnetic Vestibular Stimulation on Nystagmus, Self-Motion Perception, and Cognitive Performance in a 7T MRT. J Vis Exp 2023. [PMID: 36939227 DOI: 10.3791/64022] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/06/2023] Open
Abstract
Strong magnetic fields induce dizziness, vertigo, and nystagmus due to Lorentz forces acting on the cupula in the semi-circular canals, an effect called magnetic vestibular stimulation (MVS). In this article, we present an experimental setup in a 7T MRT scanner (MRI scanner) that allows the investigation of the influence of strong magnetic fields on nystagmus as well as perceptual and cognitive responses. The strength of MVS is manipulated by altering the head positions of the participants. The orientation of the participants' semicircular canals with respect to the static magnetic field is assessed by combining a 3D magnetometer and 3D constructive interference in steady-state (3D-CISS) images. This approach allows to account for intra- and inter-individual differences in participants' responses to MVS. In the future, MVS can be useful for clinical research, for example, in the investigation of compensatory processes in vestibular disorders. Furthermore, it could foster insights into the interplay between vestibular information and cognitive processes in terms of spatial cognition and the emergence of self-motion percepts under conflicting sensory information. In fMRI studies, MVS can elicit a possible confounding effect, especially in tasks influenced by vestibular information or in studies comparing vestibular patients with healthy controls.
Collapse
Affiliation(s)
- Gerda Wyssen
- Department of Psychology, University of Bern; Translational Imaging Center (TIC), Swiss Institute for Translational and Entrepreneurial Medicine;
| | - Miranda Morrison
- Department of Otorhinolaryngology, Head and Neck Surgery, lnselspital, University Hospital Bern and University of Bern
| | - Athanasia Korda
- Department of Otorhinolaryngology, Head and Neck Surgery, lnselspital, University Hospital Bern and University of Bern
| | - Wilhelm Wimmer
- Department of Otorhinolaryngology, Head and Neck Surgery, lnselspital, University Hospital Bern and University of Bern; Hearing Research Laboratory, ARTORG Center for Biomedical Engineering Research, University of Bern
| | - Jorge Otero-Millan
- Herbert Wertheim School of Optometry and Vision Science, University of California
| | | | - Andreas A Szukics
- Department of Psychology, University of Bern; Translational Imaging Center (TIC), Swiss Institute for Translational and Entrepreneurial Medicine
| | - Thomas Wyss
- Department of Otorhinolaryngology, Head and Neck Surgery, lnselspital, University Hospital Bern and University of Bern
| | - Franca Wagner
- University Department of Diagnostic and Interventional Neuroradiology, Inselspital, Bern University Hospital, University of Bern; Translational Imaging Center (TIC), Swiss Institute for Translational and Entrepreneurial Medicine
| | - Marco D Caversaccio
- Department of Otorhinolaryngology, Head and Neck Surgery, lnselspital, University Hospital Bern and University of Bern; Hearing Research Laboratory, ARTORG Center for Biomedical Engineering Research, University of Bern
| | - Georgios Mantokoudis
- Department of Otorhinolaryngology, Head and Neck Surgery, lnselspital, University Hospital Bern and University of Bern; Translational Imaging Center (TIC), Swiss Institute for Translational and Entrepreneurial Medicine
| | - Fred W Mast
- Department of Psychology, University of Bern; Translational Imaging Center (TIC), Swiss Institute for Translational and Entrepreneurial Medicine
| |
Collapse
|
6
|
Kerkeni H, Zee DS, Korda A, Morrison M, Mantokoudis G, Ramat S. Corrective saccades in acute vestibular neuritis: studying the role of prediction with automated passively induced head impulses. J Neurophysiol 2023; 129:445-454. [PMID: 36651642 DOI: 10.1152/jn.00382.2022] [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: 01/19/2023] Open
Abstract
When the demands for visual stabilization during head rotations overwhelm the ability of the vestibuloocular reflex (VOR) to produce compensatory eye movements, the brain produces corrective saccades that bring gaze toward the fixation target, even without visual cues (covert saccades). What triggers covert saccades and what might be the role of prediction in their generation are unknown. We studied 14 subjects with acute vestibular neuritis. To minimize variability of the stimulus, head impulses were imposed with a motorized torque generator with the subject on a bite bar. Predictable and unpredictable (timing, amplitude, direction) stimuli were compared. Distributions of covert corrective saccade latencies were analyzed with a "LATER" (linear approach to threshold with ergodic rate) approach. On the affected side, VOR gain was higher (0.47 ± 0.28 vs. 0.39 ± 0.22, P ≪ 0.001) with predictable than unpredictable head impulses, and gaze error at the end of the head movement was less (5.4 ± 3.3° vs. 6.9 ± 3.3°, P ≪ 0.001). Analyzing trials with covert saccades, gaze error at saccade end was significantly less with predictable than unpredictable head impulses (4.2 ± 2.8° vs. 5.5 ± 3.2°, P ≪ 0.001). Furthermore, covert corrective saccades occurred earlier with predictable than unpredictable head impulses (140 ± 37 vs. 153 ± 37 ms, P ≪ 0.001). Using a LATER analysis with reciprobit plots, we were able to divide covert corrective saccades into two classes, early and late, with a break point in the range of 88-98 ms. We hypothesized two rise-to-threshold decision mechanisms for triggering early and late covert corrective saccades, with the first being most engaged when stimuli are predictable.NEW & NOTEWORTHY We successfully used a LATER (linear approach to threshold with ergodic rate) analysis of the latencies of corrective saccades in patients with acute vestibular neuritis. We found two types of covert saccades: early (<90 ms) and late (>90 ms) covert saccades. Predictability led to an increase in VOR gain and a decrease in saccade latency.
Collapse
Affiliation(s)
- Hassen Kerkeni
- Department of Neurology, Inselspital, University Hospital Bern, University of Bern, Bern, Switzerland
| | - David S Zee
- Department of Neurology, Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Athanasia Korda
- Department of Otorhinolaryngology, Head and Neck Surgery, Inselspital, University Hospital Bern, University of Bern, Bern, Switzerland
| | - Miranda Morrison
- Department of Otorhinolaryngology, Head and Neck Surgery, Inselspital, University Hospital Bern, University of Bern, Bern, Switzerland
| | - Georgios Mantokoudis
- Department of Otorhinolaryngology, Head and Neck Surgery, Inselspital, University Hospital Bern, University of Bern, Bern, Switzerland
| | - Stefano Ramat
- Laboratory of Bioengineering, Department of Electrical, Computer and Biomedical Engineering, University of Pavia, Pavia, Italy
| |
Collapse
|
7
|
Loayza JJ, Kang S, Schooth L, Teh JJ, de Klerk A, Noon EK, Zhang J, Hu J, Hamilton AL, Wilson-O’Brien A, Trakman GL, Lin W, Ching J, Or L, Sung J, Yu J, Ng S, Kamm M, Morrison M. Effect of food additives on key bacterial taxa and the mucosa-associated microbiota in Crohn's disease. The ENIGMA study. Gut Microbes 2023; 15:2172670. [PMID: 36852457 PMCID: PMC9980662 DOI: 10.1080/19490976.2023.2172670] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 03/01/2023] Open
Abstract
Food additives have been linked to the pro-inflammatory microbial dysbiosis associated with Crohn's disease (CD) but the underlying ecological dynamics are unknown. Here, we examine how selection of food additives affects the growth of multiple strains of a key beneficial bacterium (Faecalibacterium prausnitzii), axenic clinical isolates of proinflammatory bacteria from CD patients (Proteus, Morganella, and Klebsiella spp.), and the consortia of mucosa-associated microbiota recovered from multiple Crohn's disease patients. Bacterial growth of the axenic isolates was evaluated using a habitat-simulating medium supplemented with either sodium sulfite, aluminum silicate, carrageenan, carboxymethylcellulose, polysorbate 80, saccharin, sucralose, or aspartame, intended to approximate concentrations found in food. The microbial consortia recovered from post-operative CD patient mucosal biopsy samples were challenged with either carboxymethylcellulose and/or polysorbate 80, and the bacterial communities compared to unchallenged consortia by 16S rRNA gene amplicon profiling. Growth of all F. prausnitzii strains was arrested when either sodium sulfite or polysorbate 80 was added to cultures at baseline or mid-exponential phase of growth, and the inhibitory effects on the Gram-negative bacteria by sodium sulfite were conditional on oxygen availability. The effects from polysorbate 80, saccharin, carrageenan, and/or carboxymethylcellulose on these bacteria were strain-specific. In addition to their direct effects on bacterial growth, polysorbate 80 and/or carboxymethylcellulose can drive profound changes in the CD mucosa-associated microbiota via niche expansion of Proteus and/or Veillonellaceae - both implicated in early Crohn's disease recurrence. These studies on the interaction of food additives with the enteric microbiota provide a basis for dietary management in Crohn's disease.
Collapse
Affiliation(s)
- J.J. Jimenez Loayza
- Frazer Institute, Faculty of Medicine, University of Queensland, Brisbane, Australia
| | - S. Kang
- Frazer Institute, Faculty of Medicine, University of Queensland, Brisbane, Australia
| | - L. Schooth
- Frazer Institute, Faculty of Medicine, University of Queensland, Brisbane, Australia
| | - J. J. Teh
- Frazer Institute, Faculty of Medicine, University of Queensland, Brisbane, Australia
| | - A. de Klerk
- Frazer Institute, Faculty of Medicine, University of Queensland, Brisbane, Australia
| | - E. K. Noon
- Frazer Institute, Faculty of Medicine, University of Queensland, Brisbane, Australia
| | - J. Zhang
- Department of Medicine and Therapeutics, the Chinese University of Hong Kong, Hong Kong, China,State Key Laboratory of Digestive Diseases, Li Ka Shing Institute of Health Science, The Chinese University of Hong Kong, Hong Kong, China,Microbiota I-Center (Magic), Hong Kong, China
| | - J. Hu
- Department of Medicine and Therapeutics, the Chinese University of Hong Kong, Hong Kong, China,State Key Laboratory of Digestive Diseases, Li Ka Shing Institute of Health Science, The Chinese University of Hong Kong, Hong Kong, China,Microbiota I-Center (Magic), Hong Kong, China
| | - A. L. Hamilton
- Department of Gastroenterology, St Vincent’s Hospital, Melbourne, Australia,Department of Medicine, the University of Melbourne, Melbourne, Australia
| | - A. Wilson-O’Brien
- Department of Gastroenterology, St Vincent’s Hospital, Melbourne, Australia,Department of Medicine, the University of Melbourne, Melbourne, Australia
| | - G. L. Trakman
- Department of Gastroenterology, St Vincent’s Hospital, Melbourne, Australia,Department of Medicine, the University of Melbourne, Melbourne, Australia
| | - W. Lin
- Microbiota I-Center (Magic), Hong Kong, China
| | - J. Ching
- Department of Medicine and Therapeutics, the Chinese University of Hong Kong, Hong Kong, China,State Key Laboratory of Digestive Diseases, Li Ka Shing Institute of Health Science, The Chinese University of Hong Kong, Hong Kong, China,Microbiota I-Center (Magic), Hong Kong, China
| | - L. Or
- Department of Medicine and Therapeutics, the Chinese University of Hong Kong, Hong Kong, China,State Key Laboratory of Digestive Diseases, Li Ka Shing Institute of Health Science, The Chinese University of Hong Kong, Hong Kong, China
| | - J.J.Y. Sung
- Lee Kong Chian School of Medicine, Nanyang Technological University, Singapore, Singapore
| | - J. Yu
- Department of Medicine and Therapeutics, the Chinese University of Hong Kong, Hong Kong, China,State Key Laboratory of Digestive Diseases, Li Ka Shing Institute of Health Science, The Chinese University of Hong Kong, Hong Kong, China
| | - S.C. Ng
- Department of Medicine and Therapeutics, the Chinese University of Hong Kong, Hong Kong, China,State Key Laboratory of Digestive Diseases, Li Ka Shing Institute of Health Science, The Chinese University of Hong Kong, Hong Kong, China,Microbiota I-Center (Magic), Hong Kong, China,Centre for Gut Microbiota Research, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong, China
| | - M.A. Kamm
- Department of Gastroenterology, St Vincent’s Hospital, Melbourne, Australia,Department of Medicine, the University of Melbourne, Melbourne, Australia
| | - M. Morrison
- Frazer Institute, Faculty of Medicine, University of Queensland, Brisbane, Australia,CONTACT M. Morrison Mark Morrison Frazer Institute, Faculty of Medicine, University of Queensland Woolloongabba, Australia
| |
Collapse
|
8
|
Sternes PR, Brett L, Phipps J, Ciccia F, Kenna T, de Guzman E, Zimmermann K, Morrison M, Holtmann G, Klingberg E, Mauro D, McIvor C, Forsblad-d'Elia H, Brown MA. Distinctive gut microbiomes of ankylosing spondylitis and inflammatory bowel disease patients suggest differing roles in pathogenesis and correlate with disease activity. Arthritis Res Ther 2022; 24:163. [PMID: 35794662 PMCID: PMC9261041 DOI: 10.1186/s13075-022-02853-3] [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] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2022] [Accepted: 06/15/2022] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Multiple studies have confirmed dysbiosis in ankylosing spondylitis (AS) and inflammatory bowel disease (IBD); however, due to methodological differences across studies, it has not been possible to determine if these diseases have similar or different gut microbiomes. RESULTS In this study, faecal and intestinal biopsies were obtained from 33 Australian AS patients (including 5 with concomitant IBD, 'AS-IBD'), 59 IBD patients and 105 healthy controls. Stool samples were also obtained from 16 Italian AS patients and 136 Swedish AS patients. Focusing on the Australian cohort, AS, AS-IBD and IBD patients differed from one another and from healthy controls in both alpha and beta diversity. AS patients with and without clinical IBD could be distinguished from one another with moderate accuracy using stool microbiome (AUC=0.754). Stool microbiome also accurately distinguished IBD patients from healthy controls (AUC=0.757). Microbiome composition was correlated with disease activity measured by BASDAI and faecal calprotectin (FCP) levels. Enrichment of potentially pathogenic Streptococcus was noted in AS, AS-IBD and IBD patients. Furthermore, enrichment of another potentially pathogenic genus, Haemophilus, was observed in AS, AS-IBD, IBD, AS patients with increased BASDAI, and IBD patients with faecal calprotectin >100 μg/mg. Apart from these genera, no other taxa were shared between AS and IBD patients. CONCLUSIONS In conclusion, the distinct gut microbiome of AS and AS-IBD patients compared to IBD patients and healthy controls is consistent with immunological and genetic evidence suggesting that the gut plays a different role in driving AS compared with IBD. However, enrichment of two potentially pathogenic genera in both diseases suggests that the presence of a shared/common microbial trigger of disease cannot be discounted.
Collapse
Affiliation(s)
- P R Sternes
- Centre for Microbiome Research, Queensland University of Technology, Brisbane, Australia.
| | - L Brett
- Department of Gastroenterology, Logan Hospital, Logan, Australia
| | - J Phipps
- School of Biomedical Sciences, Queensland University of Technology, Brisbane, Australia
| | - F Ciccia
- Department of Precision Medicine, Università della Campania L. Vanvitelli, Naples, Italy
| | - T Kenna
- Centre for Microbiome Research, Queensland University of Technology, Brisbane, Australia.,Centre for Immunology and Infection Control, Queensland University of Technology, Brisbane, Australia
| | - E de Guzman
- Centre for Microbiome Research, Queensland University of Technology, Brisbane, Australia.,School of Biomedical Sciences, Queensland University of Technology, Brisbane, Australia
| | - K Zimmermann
- Centre for Immunology and Infection Control, Queensland University of Technology, Brisbane, Australia
| | - M Morrison
- School of Chemistry and Molecular Biosciences, University of Queensland, Brisbane, Australia
| | - G Holtmann
- Faculty of Health and Behavioural Sciences, University of Queensland, Brisbane, Australia
| | - E Klingberg
- Department of Rheumatology and Inflammation Research, Sahlgrenska Academy at University of Gothenburg, Gothenburg, Sweden
| | - D Mauro
- Department of Precision Medicine, Università della Campania L. Vanvitelli, Naples, Italy
| | - C McIvor
- Department of Gastroenterology, Logan Hospital, Logan, Australia
| | - H Forsblad-d'Elia
- Department of Rheumatology and Inflammation Research, Sahlgrenska Academy at University of Gothenburg, Gothenburg, Sweden
| | - M A Brown
- Genomics England, London, UK.,Faculty of Life Sciences and Medicine, King's College London, London, UK
| |
Collapse
|
9
|
Morrison M, Korda A, Wagner F, Caversaccio MD, Mantokoudis G. Case Report: Fremitus Nystagmus in Superior Canal Dehiscence Syndrome. Front Neurol 2022; 13:844687. [PMID: 35614919 PMCID: PMC9124807 DOI: 10.3389/fneur.2022.844687] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2021] [Accepted: 03/17/2022] [Indexed: 11/21/2022] Open
Abstract
Superior canal dehiscence syndrome (SCDS) is a structural bony defect of the roof of the superior semi-circular canal into the middle cranial fossa and is responsible for the creation of a third window, which alters the dynamics of the inner ear. During humming, vibratory waves entering the vestibulum and cochlea are re-routed through the dehiscence, leading to stimulation of the otolithic and ampullary vestibular organs. This is responsible for the torsional-vertical nystagmus known as “fremitus nystagmus”. In this case report, we video-document a rare case of fremitus nystagmus and its resolution after plugging of the superior semi-circular canal.
Collapse
Affiliation(s)
- Miranda Morrison
- Department of Otorhinolaryngology, Head and Neck Surgery, Inselspital, University Hospital Bern and the University of Bern, Bern, Switzerland
| | - Athanasia Korda
- Department of Otorhinolaryngology, Head and Neck Surgery, Inselspital, University Hospital Bern and the University of Bern, Bern, Switzerland
| | - Franca Wagner
- University Institute of Diagnostic and Interventional Neuroradiology, Inselspital, University Hospital Bern and the University of Bern, Bern, Switzerland
| | - Marco Domenico Caversaccio
- Department of Otorhinolaryngology, Head and Neck Surgery, Inselspital, University Hospital Bern and the University of Bern, Bern, Switzerland
| | - Georgios Mantokoudis
- Department of Otorhinolaryngology, Head and Neck Surgery, Inselspital, University Hospital Bern and the University of Bern, Bern, Switzerland
- *Correspondence: Georgios Mantokoudis
| |
Collapse
|
10
|
Radomski M, Kreiger R, Anheluk M, Berling K, Darger M, Garcia H, Grabe K, Hopkins S, Morrison M, Zola J, Swenson KK. Cognitive Dysfunction: Feasibility of a Brief Intervention to Help Breast Cancer Survivors. Clin J Oncol Nurs 2021; 25:E69-E76. [PMID: 34800105 DOI: 10.1188/21.cjon.e69-e76] [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: 11/17/2022]
Abstract
BACKGROUND Many cancer survivors experience cancer-related cognitive dysfunction (CRCD), which is believed to be the result of multiple contributing biologic, situational, and personal factors. Efficacious, clinically implementable interventions addressing the multifactorial nature of CRCD are needed. OBJECTIVES This study evaluated the feasibility of an intervention to help breast cancer survivors mitigate the effects of modifiable factors that contribute to CRCD and improve cognitive functioning. METHODS A single-group pre-/post-test design was used. Treatment fidelity was tracked to evaluate implementability; attendance rates, experience surveys, and homework engagement were used to characterize acceptability. Pre- and post-test cognitive functioning, stress, fatigue, and mood were measured to evaluate preliminary efficacy. FINDINGS The intervention was implementable and acceptable to participants. Participants made statistically significant improvements.
Collapse
|
11
|
Teh JJ, Berendsen EM, Hoedt EC, Kang S, Zhang J, Zhang F, Liu Q, Hamilton AL, Wilson-O’Brien A, Ching J, Sung JJY, Yu J, Ng SC, Kamm MA, Morrison M. Novel strain-level resolution of Crohn's disease mucosa-associated microbiota via an ex vivo combination of microbe culture and metagenomic sequencing. ISME J 2021; 15:3326-3338. [PMID: 34035441 PMCID: PMC8528831 DOI: 10.1038/s41396-021-00991-1] [Citation(s) in RCA: 6] [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] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/22/2020] [Revised: 04/07/2021] [Accepted: 04/15/2021] [Indexed: 02/03/2023]
Abstract
The mucosa-associated microbiota is widely recognized as a potential trigger for Crohn's disease pathophysiology but remains largely uncharacterised beyond its taxonomic composition. Unlike stool microbiota, the functional characterisation of these communities using current DNA/RNA sequencing approaches remains constrained by the relatively small microbial density on tissue, and the overwhelming amount of human DNA recovered during sample preparation. Here, we have used a novel ex vivo approach that combines microbe culture from anaerobically preserved tissue with metagenome sequencing (MC-MGS) to reveal patient-specific and strain-level differences among these communities in post-operative Crohn's disease patients. The 16 S rRNA gene amplicon profiles showed these cultures provide a representative and holistic representation of the mucosa-associated microbiota, and MC-MGS produced both high quality metagenome-assembled genomes of recovered novel bacterial lineages. The MC-MGS approach also produced a strain-level resolution of key Enterobacteriacea and their associated virulence factors and revealed that urease activity underpins a key and diverse metabolic guild in these communities, which was confirmed by culture-based studies with axenic cultures. Collectively, these findings using MC-MGS show that the Crohn's disease mucosa-associated microbiota possesses taxonomic and functional attributes that are highly individualistic, borne at least in part by novel bacterial lineages not readily isolated or characterised from stool samples using current sequencing approaches.
Collapse
Affiliation(s)
- J. J. Teh
- grid.1003.20000 0000 9320 7537The University of Queensland Diamantina Institute, Faculty of Medicine, University of Queensland, Woolloongabba, QLD Australia
| | - E. M. Berendsen
- grid.1003.20000 0000 9320 7537The University of Queensland Diamantina Institute, Faculty of Medicine, University of Queensland, Woolloongabba, QLD Australia ,Present Address: Wacker Biotech B.V., Amsterdam, The Netherlands
| | - E. C. Hoedt
- grid.1003.20000 0000 9320 7537The University of Queensland Diamantina Institute, Faculty of Medicine, University of Queensland, Woolloongabba, QLD Australia ,grid.413648.cPresent Address: NHMRC Centre of Research Excellence (CRE) in Digestive Health, Hunter Medical Research Institute (HMRI), Newcastle, NSW Australia
| | - S. Kang
- grid.1003.20000 0000 9320 7537The University of Queensland Diamantina Institute, Faculty of Medicine, University of Queensland, Woolloongabba, QLD Australia
| | - J. Zhang
- grid.10784.3a0000 0004 1937 0482Department of Medicine and Therapeutics, Institute of Digestive Disease, State Key Laboratory of Digestive Diseases, Li Ka Shing Institute of Health Science, The Chinese University of Hong Kong, Hong Kong, China
| | - F. Zhang
- grid.10784.3a0000 0004 1937 0482Department of Medicine and Therapeutics, Institute of Digestive Disease, State Key Laboratory of Digestive Diseases, Li Ka Shing Institute of Health Science, The Chinese University of Hong Kong, Hong Kong, China
| | - Q. Liu
- grid.10784.3a0000 0004 1937 0482Department of Medicine and Therapeutics, Institute of Digestive Disease, State Key Laboratory of Digestive Diseases, Li Ka Shing Institute of Health Science, The Chinese University of Hong Kong, Hong Kong, China
| | - A. L. Hamilton
- grid.413105.20000 0000 8606 2560Department of Gastroenterology, St Vincent’s Hospital, Melbourne, VIC Australia ,grid.1008.90000 0001 2179 088XDepartment of Medicine, The University of Melbourne, Melbourne, VIC Australia
| | - A. Wilson-O’Brien
- grid.413105.20000 0000 8606 2560Department of Gastroenterology, St Vincent’s Hospital, Melbourne, VIC Australia ,grid.1008.90000 0001 2179 088XDepartment of Medicine, The University of Melbourne, Melbourne, VIC Australia
| | - J. Ching
- grid.10784.3a0000 0004 1937 0482Department of Medicine and Therapeutics, Institute of Digestive Disease, State Key Laboratory of Digestive Diseases, Li Ka Shing Institute of Health Science, The Chinese University of Hong Kong, Hong Kong, China
| | - J. J. Y. Sung
- grid.10784.3a0000 0004 1937 0482Department of Medicine and Therapeutics, Institute of Digestive Disease, State Key Laboratory of Digestive Diseases, Li Ka Shing Institute of Health Science, The Chinese University of Hong Kong, Hong Kong, China ,grid.59025.3b0000 0001 2224 0361Present Address: Lee Kong Chian School of Medicine, Nanyang Technological University, Singapore, Singapore
| | - J. Yu
- grid.10784.3a0000 0004 1937 0482Department of Medicine and Therapeutics, Institute of Digestive Disease, State Key Laboratory of Digestive Diseases, Li Ka Shing Institute of Health Science, The Chinese University of Hong Kong, Hong Kong, China ,grid.10784.3a0000 0004 1937 0482Center for Gut Microbiota Research, Department of Medicine and Therapeutics, The Chinese University of Hong Kong, Hong Kong, China
| | - S. C. Ng
- grid.10784.3a0000 0004 1937 0482Department of Medicine and Therapeutics, Institute of Digestive Disease, State Key Laboratory of Digestive Diseases, Li Ka Shing Institute of Health Science, The Chinese University of Hong Kong, Hong Kong, China ,grid.10784.3a0000 0004 1937 0482Center for Gut Microbiota Research, Department of Medicine and Therapeutics, The Chinese University of Hong Kong, Hong Kong, China
| | - M. A. Kamm
- grid.413105.20000 0000 8606 2560Department of Gastroenterology, St Vincent’s Hospital, Melbourne, VIC Australia ,grid.1008.90000 0001 2179 088XDepartment of Medicine, The University of Melbourne, Melbourne, VIC Australia
| | - M. Morrison
- grid.1003.20000 0000 9320 7537The University of Queensland Diamantina Institute, Faculty of Medicine, University of Queensland, Woolloongabba, QLD Australia
| |
Collapse
|
12
|
Morrison M, Korda A, Zamaro E, Wagner F, Caversaccio MD, Sauter TC, Kalla R, Mantokoudis G. Paradigm shift in acute dizziness: is caloric testing obsolete? J Neurol 2021; 269:853-860. [PMID: 34191079 PMCID: PMC8782777 DOI: 10.1007/s00415-021-10667-7] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [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: 05/02/2021] [Revised: 06/11/2021] [Accepted: 06/14/2021] [Indexed: 12/03/2022]
Abstract
Objective Cold and warm water ear irrigation, also known as bithermal caloric testing, has been considered for over 100 years the ‘Gold Standard’ for the detection of peripheral vestibular hypofunction. Its discovery was awarded a Nobel Prize. We aimed to investigate the diagnostic accuracy of Caloric Testing when compared to the video head impulse test (vHIT) in differentiating between vestibular neuritis and vestibular strokes in acute dizziness. Design Prospective cross-sectional study (convenience sample). Setting All patients presenting with signs of an acute vestibular syndrome at the emergency department of a tertiary referral center. Participants One thousand, six hundred seventy-seven patients were screened between February 2015 and May 2020 for Acute Vestibular Syndrome (AVS), of which 152 met the inclusion criteria and were enrolled. Inclusion criteria consisted of a state of continuous dizziness, associated with nausea or vomiting, head-motion intolerance, new gait or balance disturbance and nystagmus. Patients were excluded if they were younger than 18 years, if symptoms lasted < 24 h or if the index ED visit was > 72 h after symptom onset. Of the 152 included patients 85 completed testing. We assessed 58 vestibular neuritis and 27 stroke patients. Main outcome measures All patients underwent calorics and vHIT followed by a delayed MRI which served as a gold standard for vestibular stroke confirmation. Results The overall sensitivity and specificity for detecting stroke with a caloric asymmetry cut-off of 30.9% was 75% and 86.8%, respectively [negative likelihood ratio (NLR) 0.29] compared to 91.7% and 88.7% for vHIT (NLR 0.094). Best VOR gain cut-off was 0.685. Twenty-five percent of vestibular strokes were misclassified by calorics, 8% by vHIT. Conclusions Caloric testing proved to be less accurate than vHIT in discriminating stroke from vestibular neuritis in acute dizziness. Contrary to classic teaching, asymmetric caloric responses can also occur with vestibular strokes and might put the patient at risk for misdiagnosis. We, therefore, recommend to abandon caloric testing in current practice and to replace it with vHIT in the acute setting. Caloric testing has still its place as a diagnostic tool in an outpatient setting. Supplementary Information The online version contains supplementary material available at 10.1007/s00415-021-10667-7.
Collapse
Affiliation(s)
- Miranda Morrison
- Department of Otorhinolaryngology, Head and Neck Surgery, Inselspital, University Hospital Bern and University of Bern, 3010, Bern, Switzerland
| | - Athanasia Korda
- Department of Otorhinolaryngology, Head and Neck Surgery, Inselspital, University Hospital Bern and University of Bern, 3010, Bern, Switzerland
| | - Ewa Zamaro
- Department of Otorhinolaryngology, Head and Neck Surgery, Inselspital, University Hospital Bern and University of Bern, 3010, Bern, Switzerland
| | - Franca Wagner
- University Institute of Diagnostic and Interventional Neuroradiology, Inselspital, University Hospital Bern and University of Bern, Bern, Switzerland
| | - Marco D Caversaccio
- Department of Otorhinolaryngology, Head and Neck Surgery, Inselspital, University Hospital Bern and University of Bern, 3010, Bern, Switzerland
| | - Thomas C Sauter
- Department of Emergency Medicine, Inselspital, University Hospital Bern and University of Bern, Bern, Switzerland
| | - Roger Kalla
- Department of Neurology, Inselspital, University Hospital Bern and University of Bern, Bern, Switzerland
| | - Georgios Mantokoudis
- Department of Otorhinolaryngology, Head and Neck Surgery, Inselspital, University Hospital Bern and University of Bern, 3010, Bern, Switzerland.
| |
Collapse
|
13
|
Mantokoudis G, Wyss T, Zamaro E, Korda A, Wagner F, Sauter TC, Kerkeni H, Kalla R, Morrison M, Caversaccio MD. Stroke Prediction Based on the Spontaneous Nystagmus Suppression Test in Dizzy Patients: A Diagnostic Accuracy Study. Neurology 2021; 97:e42-e51. [PMID: 33986142 PMCID: PMC8312858 DOI: 10.1212/wnl.0000000000012176] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [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: 12/04/2020] [Accepted: 03/26/2021] [Indexed: 11/15/2022] Open
Abstract
OBJECTIVE Failure of fixation suppression of spontaneous nystagmus is sometimes seen in patients with vestibular strokes involving the cerebellum or brainstem; however, the accuracy of this test for the discrimination between peripheral and central causes in patients with an acute vestibular syndrome (AVS) is unknown. METHODS Patients with AVS were screened and recruited (convenience sample) as part of a prospective cross-sectional study in the emergency department between 2015 and 2020. All patients received neuroimaging, which served as a reference standard. We recorded fixation suppression with video-oculography (VOG) for forward, right, and left gaze. The ocular fixation index (OFI) and the spontaneous nystagmus slow velocity reduction was calculated. RESULTS We screened 1,646 patients reporting dizziness in the emergency department and tested for spontaneous nystagmus in 148 patients with AVS. We analyzed 56 patients with a diagnosed acute unilateral vestibulopathy (vestibular neuritis) and 28 patients with a confirmed stroke. There was a complete nystagmus fixation suppression in 49.5% of patients with AVS, in 40% of patients with vestibular neuritis, and in 62.5% of patients with vestibular strokes. OFI scores had no predictive value for detecting strokes; however, a nystagmus reduction of less than 2 °/s showed a high accuracy of 76.9% (confidence interval 0.59-0.89) with a sensitivity of 62.2% and specificity of 84.8% in detecting strokes. CONCLUSIONS The presence of fixation suppression does not rule out a central lesion. The magnitude of suppression was lower compared to patients with vestibular neuritis. The nystagmus suppression test predicts vestibular strokes accurately provided that eye movements are recorded with VOG. CLASSIFICATION OF EVIDENCE This study provides Class II evidence that in patients with an AVS, decreased fixation suppression recorded with VOG occurred more often in stroke (76.9%) than in vestibular neuritis (37.8%).
Collapse
Affiliation(s)
- Georgios Mantokoudis
- From the Department of Otorhinolaryngology, Head and Neck Surgery (G.M., T.W., E.Z., A.K., M.M., M.D.C.), University Institute of Diagnostic and Interventional Neuroradiology (F.W.), Department of Emergency Medicine (T.C.S.), and Department of Neurology (H.K., R.K.), Inselspital, University Hospital Bern and University of Bern, Switzerland.
| | - Thomas Wyss
- From the Department of Otorhinolaryngology, Head and Neck Surgery (G.M., T.W., E.Z., A.K., M.M., M.D.C.), University Institute of Diagnostic and Interventional Neuroradiology (F.W.), Department of Emergency Medicine (T.C.S.), and Department of Neurology (H.K., R.K.), Inselspital, University Hospital Bern and University of Bern, Switzerland
| | - Ewa Zamaro
- From the Department of Otorhinolaryngology, Head and Neck Surgery (G.M., T.W., E.Z., A.K., M.M., M.D.C.), University Institute of Diagnostic and Interventional Neuroradiology (F.W.), Department of Emergency Medicine (T.C.S.), and Department of Neurology (H.K., R.K.), Inselspital, University Hospital Bern and University of Bern, Switzerland
| | - Athanasia Korda
- From the Department of Otorhinolaryngology, Head and Neck Surgery (G.M., T.W., E.Z., A.K., M.M., M.D.C.), University Institute of Diagnostic and Interventional Neuroradiology (F.W.), Department of Emergency Medicine (T.C.S.), and Department of Neurology (H.K., R.K.), Inselspital, University Hospital Bern and University of Bern, Switzerland
| | - Franca Wagner
- From the Department of Otorhinolaryngology, Head and Neck Surgery (G.M., T.W., E.Z., A.K., M.M., M.D.C.), University Institute of Diagnostic and Interventional Neuroradiology (F.W.), Department of Emergency Medicine (T.C.S.), and Department of Neurology (H.K., R.K.), Inselspital, University Hospital Bern and University of Bern, Switzerland
| | - Thomas C Sauter
- From the Department of Otorhinolaryngology, Head and Neck Surgery (G.M., T.W., E.Z., A.K., M.M., M.D.C.), University Institute of Diagnostic and Interventional Neuroradiology (F.W.), Department of Emergency Medicine (T.C.S.), and Department of Neurology (H.K., R.K.), Inselspital, University Hospital Bern and University of Bern, Switzerland
| | - Hassen Kerkeni
- From the Department of Otorhinolaryngology, Head and Neck Surgery (G.M., T.W., E.Z., A.K., M.M., M.D.C.), University Institute of Diagnostic and Interventional Neuroradiology (F.W.), Department of Emergency Medicine (T.C.S.), and Department of Neurology (H.K., R.K.), Inselspital, University Hospital Bern and University of Bern, Switzerland
| | - Roger Kalla
- From the Department of Otorhinolaryngology, Head and Neck Surgery (G.M., T.W., E.Z., A.K., M.M., M.D.C.), University Institute of Diagnostic and Interventional Neuroradiology (F.W.), Department of Emergency Medicine (T.C.S.), and Department of Neurology (H.K., R.K.), Inselspital, University Hospital Bern and University of Bern, Switzerland
| | - Miranda Morrison
- From the Department of Otorhinolaryngology, Head and Neck Surgery (G.M., T.W., E.Z., A.K., M.M., M.D.C.), University Institute of Diagnostic and Interventional Neuroradiology (F.W.), Department of Emergency Medicine (T.C.S.), and Department of Neurology (H.K., R.K.), Inselspital, University Hospital Bern and University of Bern, Switzerland
| | - Marco Domenico Caversaccio
- From the Department of Otorhinolaryngology, Head and Neck Surgery (G.M., T.W., E.Z., A.K., M.M., M.D.C.), University Institute of Diagnostic and Interventional Neuroradiology (F.W.), Department of Emergency Medicine (T.C.S.), and Department of Neurology (H.K., R.K.), Inselspital, University Hospital Bern and University of Bern, Switzerland
| |
Collapse
|
14
|
Galbraith J, Legrand J, Muller N, Togher K, Matigian N, Baz B, Morahan G, Walker G, Morrison M, Khosrotehrani K. 223 Murine cutaneous microbiota composition is largely mouse strain determined with microbiota changes during acute wound healing showing mouse strain specific responses. J Invest Dermatol 2021. [DOI: 10.1016/j.jid.2021.02.244] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
|
15
|
CHAN S, Morrison M, Hawley C, Campbell S, Francis R, Isbel N, Pascoe E, Johnson D. POS-709 Characteristics of the gastrointestinal microbiota in paired live kidney donors and recipients. Kidney Int Rep 2021. [DOI: 10.1016/j.ekir.2021.03.741] [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] Open
|
16
|
Gebhart I, Götting C, Hool SL, Morrison M, Korda A, Caversaccio M, Obrist D, Mantokoudis G. Sémont Maneuver for Benign Paroxysmal Positional Vertigo Treatment: Moving in the Correct Plane Matters. Otol Neurotol 2021; 42:e341-e347. [PMID: 33165161 PMCID: PMC7880166 DOI: 10.1097/mao.0000000000002992] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [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] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
HYPOTHESIS We aimed to investigate the effect of the head excursion angle on the success of the Sémont Maneuver (SM). BACKGROUND SM is performed with the head turned by 45 degrees toward the unaffected ear. In clinical routine, it is unlikely that physicians can turn the head to a position of exactly 45 degrees. Moreover, it is unclear how possible deviations from 45 degrees would affect the outcome with SM. METHODS We used an in vitro model (upscaled by ×5) of a posterior semicircular canal with canalithiasis to study head excursion angles (0-75 degrees) and minimum waiting times in SM. Additionally, we measured actual head excursion angles performed by trained physicians during SM on a healthy subject. RESULTS Successful canalith repositioning to the utricle was possible at head excursion angles between 21 and 67 degrees. Waiting time increased from 16 to 30 seconds with increasing deviation from 45 degrees. Angles larger than 67 degrees or smaller than 21 degrees did not lead to successful repositioning even after a waiting period of 5 minutes. Physicians set head excursion angles of 50 degrees ±SD 4.8 degrees while performing the SM. CONCLUSION Angular deviations up to ±20 degrees from the ideal SCC plane (45 degrees) still allows for successful SM. Although the tested physicians tended to underestimate the actual head excursion angle by 5 degrees (and more), the success of SM will not be affected provided that the waiting time is sufficiently long. Further, the results suggest that the Brandt-Daroff maneuver is a form of habituation training rather than a liberatory maneuver.
Collapse
Affiliation(s)
- Isabel Gebhart
- Department of Otorhinolaryngology, Head and Neck Surgery, Inselspital, University Hospital and University of Bern
| | - Carina Götting
- Department of Otorhinolaryngology, Head and Neck Surgery, Inselspital, University Hospital and University of Bern
| | - Sara-Lynn Hool
- Department of Otorhinolaryngology, Head and Neck Surgery, Inselspital, University Hospital and University of Bern
| | - Miranda Morrison
- Department of Otorhinolaryngology, Head and Neck Surgery, Inselspital, University Hospital and University of Bern
| | - Athanasia Korda
- Department of Otorhinolaryngology, Head and Neck Surgery, Inselspital, University Hospital and University of Bern
| | - Marco Caversaccio
- Department of Otorhinolaryngology, Head and Neck Surgery, Inselspital, University Hospital and University of Bern
| | - Dominik Obrist
- ARTORG Center for Biomedical Engineering Research, University of Bern, Bern, Switzerland
| | - Georgios Mantokoudis
- Department of Otorhinolaryngology, Head and Neck Surgery, Inselspital, University Hospital and University of Bern
| |
Collapse
|
17
|
Lipton G, Stewart M, McDermid R, Docking R, Urquhart C, Morrison M, Montgomery J. Multispecialty tracheostomy experience. Ann R Coll Surg Engl 2020; 102:343-347. [PMID: 32233651 PMCID: PMC7374792 DOI: 10.1308/rcsann.2019.0184] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [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] [Accepted: 01/09/2020] [Indexed: 11/22/2022] Open
Abstract
INTRODUCTION Tracheostomy is a common surgical procedure used to create a secure airway in patients, now performed by a variety of specialties, with a notable rise in critical care environments. It is unclear whether this rise is seen in units with large head and neck surgery departments, and how practice in such units compares with the rest of the UK. METHODS A three-year retrospective audit was carried out between anaesthetic, surgical and critical care departments. All tracheostomy procedures were recorded anonymously. RESULTS A total of 523 tracheostomies were performed, 66% of which were in men. The mean patient age was 60 years. The majority (83%) were elective, performed for various indications, while the remaining 17% were emergency tracheostomies performed for pending airway obstruction. A fifth of the tracheostomies were percutaneous procedures. Most emergency tracheostomies (78%) were performed by otolaryngology. Three cricothyroidotomies were performed within critical care and theatres. Complications related to tracheostomy occurred in 47 cases (9%), most commonly lower respiratory tract infection. The mean time to decannulation was 12.8 days. CONCLUSIONS This paper discusses the findings of a comprehensive, multispecialty audit of tracheostomy experience in a large health board, with over 150 tracheostomies performed annually. Elective cases form the majority although there is a significant case series of emergency tracheostomies performed for a range of pathologies. Around a quarter of those requiring tracheostomy ultimately died, mostly as a result of advanced cancer.
Collapse
|
18
|
Soder R, Abhyankar S, Morrison M, Weir S, Mitchell J, Dunavin N, Li M, Shune L, Singh A, Ganguly S, Dawn B, McGuirk J. A phase i study to evaluate the safety of wharton's jelly mesenchymal stem cells for the treatment of de novo high risk or steroid refractory acute Graft Versus Host Disease (aGVHD). Cytotherapy 2020. [DOI: 10.1016/j.jcyt.2020.03.188] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
19
|
Abstract
Nasopharyngeal carcinoma (NPC), an uncommon malignancy in Western Countries and Radiotherapy, remains an effective treatment. Its side effects are classified as either immediate or late; postradiation necrosis is as an important late side effect with a strong impact on the prognosis in patients with NPC. We report the case of 65-year-old Caucasian man presenting with a deep necrotic ulcer of the nasopharynx and osteoradionecrosis of the skull base that appeared 3 months after radiotherapy for nasopharyngeal carcinoma. Conservative treatment was applied with surgical management of the ulcer. Clinical and radiological outcomes are presented. Radiotherapy remains a good treatment option with varying degrees of side effects, in particular, postradiation necrosis and ulcer. Multiple options of treatment have been described. However, the surgical management could be indicated in cases of deep ulcer with life-threatening prognosis.
Collapse
Affiliation(s)
- Bassel Hallak
- Otorhinolaryngology, Hospital of Sion, Sion, Switzerland
| | | | | | - Salim Bouayed
- Otorhinolaryngology, Hospital of Sion, Sion, Switzerland
| |
Collapse
|
20
|
Morrison M, Pettus-Davis C, Renn T, Veeh C, Weatherly C. What Trauma Looks Like for Incarcerated Men: A Study of Men's Lifetime Trauma Exposure in Two State Prisons. J Trauma Stress Disord Treat 2019; 8:192. [PMID: 32704504 PMCID: PMC7377264] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
OBJECTIVE While it is understood that high rates of trauma exposure are common among incarcerated male populations, there is limited data on the nature of the trauma exposure. This study sought to develop foundational knowledge about the trauma experiences of incarcerated men in order to provide a basis for further theory building in this area. METHOD This study used a quantitative-qualitative approach to examine the trauma histories of a randomly selected sample of 67 men incarcerated in the Missouri Department of Corrections. RESULTS The analyses revealed several patterns among study participants, including near universal trauma exposure in adolescence with the most frequent exposures involving witnessing or being proximate to violent deaths of family and friends. The mean age of exposure for all trauma exposure types measured was 17 years old. We found that for this group of incarcerated men, trauma exposures in childhood tended to result more from community violence than child maltreatment (e.g., abuse and neglect by caregivers). CONCLUSION The study results suggested that further research may be needed into the effects of close proximity to violent death during this particular window in adolescent development. Neuroscience research has shown that this is a "sensitive period" in brain development with potential negative outcomes in early adulthood, including emotional regulation deficits that can potentially lead to increased risk of arrest. Further research on trauma exposure within this population is needed both to appropriately serve men while in prison or in the process of reentering society and to support efforts to reduce mass incarceration.
Collapse
Affiliation(s)
- M Morrison
- Brown School of Social Work, Washington University, Missouri, USA
| | - C Pettus-Davis
- College of Social Work, Florida State University, Florida, USA
| | - T Renn
- College of Social Work, Florida State University, Florida, USA
| | - C Veeh
- School of Social Work, University of Iowa, Iowa, USA
| | - C Weatherly
- Brown School of Social Work, Washington University, Missouri, USA
| |
Collapse
|
21
|
Redondo MJ, Geyer S, Steck AK, Sharp S, Wentworth JM, Weedon MN, Antinozzi P, Sosenko J, Atkinson M, Pugliese A, Oram RA, Antinozzi P, Atkinson M, Battaglia M, Becker D, Bingley P, Bosi E, Buckner J, Colman P, Gottlieb P, Herold K, Insel R, Kay T, Knip M, Marks J, Moran A, Palmer J, Peakman M, Philipson L, Pugliese A, Raskin P, Rodriguez H, Roep B, Russell W, Schatz D, Wherrett D, Wilson D, Winter W, Ziegler A, Benoist C, Blum J, Chase P, Clare-Salzler M, Clynes R, Eisenbarth G, Fathman C, Grave G, Hering B, Kaufman F, Leschek E, Mahon J, Nanto-Salonen K, Nepom G, Orban T, Parkman R, Pescovitz M, Peyman J, Roncarolo M, Simell O, Sherwin R, Siegelman M, Steck A, Thomas J, Trucco M, Wagner J, Greenbaum ,CJ, Bourcier K, Insel R, Krischer JP, Leschek E, Rafkin L, Spain L, Cowie C, Foulkes M, Krause-Steinrauf H, Lachin JM, Malozowski S, Peyman J, Ridge J, Savage P, Skyler JS, Zafonte SJ, Kenyon NS, Santiago I, Sosenko JM, Bundy B, Abbondondolo M, Adams T, Amado D, Asif I, Boonstra M, Bundy B, Burroughs C, Cuthbertson D, Deemer M, Eberhard C, Fiske S, Ford J, Garmeson J, Guillette H, Browning G, Coughenour T, Sulk M, Tsalikan E, Tansey M, Cabbage J, Dixit N, Pasha S, King M, Adcock K, Geyer S, Atterberry H, Fox L, Englert K, Mauras N, Permuy J, Sikes K, Berhe T, Guendling B, McLennan L, Paganessi L, Hays B, Murphy C, Draznin M, Kamboj M, Sheppard S, Lewis V, Coates L, Moore W, Babar G, Bedard J, Brenson-Hughes D, Henderson C, Cernich J, Clements M, Duprau R, Goodman S, Hester L, Huerta-Saenz L, Karmazin A, Letjen T, Raman S, Morin D, Henry M, Bestermann W, Morawski E, White J, Brockmyer A, Bays R, Campbell S, Stapleton A, Stone N, Donoho A, Everett H, Heyman K, Hensley H, Johnson M, Marshall C, Skirvin N, Taylor P, Williams R, Ray L, Wolverton C, Nickels D, Dothard C, Hsiao B, Speiser P, Pellizzari M, Bokor L, Izuora K, Abdelnour S, Cummings P, Paynor S, Leahy M, Riedl M, Shockley S, Karges C, Saad R, Briones T, Casella S, Herz C, Walsh K, Greening J, Hay F, Hunt S, Sikotra N, Simons L, Keaton N, Karounos D, Oremus R, Dye L, Myers L, Ballard D, Miers W, Sparks R, Thraikill K, Edwards K, Fowlkes J, Kinderman A, Kemp S, Morales A, Holland L, Johnson L, Paul P, Ghatak A, Phelen K, Leyland H, Henderson T, Brenner D, Law P, Oppenheimer E, Mamkin I, Moniz C, Clarson C, Lovell M, Peters A, Ruelas V, Borut D, Burt D, Jordan M, Leinbach A, Castilla S, Flores P, Ruiz M, Hanson L, Green-Blair J, Sheridan R, Wintergerst K, Pierce G, Omoruyi A, Foster M, Linton C, Kingery S, Lunsford A, Cervantes I, Parker T, Price P, Urben J, Doughty I, Haydock H, Parker V, Bergman P, Liu S, Duncum S, Rodda C, Thomas A, Ferry R, McCommon D, Cockroft J, Perelman A, Calendo R, Barrera C, Arce-Nunez E, Lloyd J, Martinez Y, De la Portilla M, Cardenas I, Garrido L, Villar M, Lorini R, Calandra E, D’Annuzio G, Perri K, Minuto N, Malloy J, Rebora C, Callegari R, Ali O, Kramer J, Auble B, Cabrera S, Donohoue P, Fiallo-Scharer R, Hessner M, Wolfgram P, Maddox K, Kansra A, Bettin N, McCuller R, Miller A, Accacha S, Corrigan J, Fiore E, Levine R, Mahoney T, Polychronakos C, Martin J, Gagne V, Starkman H, Fox M, Chin D, Melchionne F, Silverman L, Marshall I, Cerracchio L, Cruz J, Viswanathan A, Miller J, Wilson J, Chalew S, Valley S, Layburn S, Lala A, Clesi P, Genet M, Uwaifo G, Charron A, Allerton T, Milliot E, Cefalu W, Melendez-Ramirez L, Richards R, Alleyn C, Gustafson E, Lizanna M, Wahlen J, Aleiwe S, Hansen M, Wahlen H, Moore M, Levy C, Bonaccorso A, Rapaport R, Tomer Y, Chia D, Goldis M, Iazzetti L, Klein M, Levister C, Waldman L, Muller S, Wallach E, Regelmann M, Antal Z, Aranda M, Reynholds C, Leech N, Wake D, Owens C, Burns M, Wotherspoon J, Nguyen T, Murray A, Short K, Curry G, Kelsey S, Lawson J, Porter J, Stevens S, Thomson E, Winship S, Wynn L, O’Donnell R, Wiltshire E, Krebs J, Cresswell P, Faherty H, Ross C, Vinik A, Barlow P, Bourcier M, Nevoret M, Couper J, Oduah V, Beresford S, Thalagne N, Roper H, Gibbons J, Hill J, Balleaut S, Brennan C, Ellis-Gage J, Fear L, Gray T, Pilger J, Jones L, McNerney C, Pointer L, Price N, Few K, Tomlinson D, Denvir L, Drew J, Randell T, Mansell P, Roberts A, Bell S, Butler S, Hooton Y, Navarra H, Roper A, Babington G, Crate L, Cripps H, Ledlie A, Moulds C, Sadler K, Norton R, Petrova B, Silkstone O, Smith C, Ghai K, Murray M, Viswanathan V, Henegan M, Kawadry O, Olson J, Stavros T, Patterson L, Ahmad T, Flores B, Domek D, Domek S, Copeland K, George M, Less J, Davis T, Short M, Tamura R, Dwarakanathan A, O’Donnell P, Boerner B, Larson L, Phillips M, Rendell M, Larson K, Smith C, Zebrowski K, Kuechenmeister L, Wood K, Thevarayapillai M, Daniels M, Speer H, Forghani N, Quintana R, Reh C, Bhangoo A, Desrosiers P, Ireland L, Misla T, Xu P, Torres C, Wells S, Villar J, Yu M, Berry D, Cook D, Soder J, Powell A, Ng M, Morrison M, Young K, Haslam Z, Lawson M, Bradley B, Courtney J, Richardson C, Watson C, Keely E, DeCurtis D, Vaccarcello-Cruz M, Torres Z, Alies P, Sandberg K, Hsiang H, Joy B, McCormick D, Powell A, Jones H, Bell J, Hargadon S, Hudson S, Kummer M, Badias F, Sauder S, Sutton E, Gensel K, Aguirre-Castaneda R, Benavides Lopez V, Hemp D, Allen S, Stear J, Davis E, Jones T, Baker A, Roberts A, Dart J, Paramalingam N, Levitt Katz L, Chaudhary N, Murphy K, Willi S, Schwartzman B, Kapadia C, Larson D, Bassi M, McClellan D, Shaibai G, Kelley L, Villa G, Kelley C, Diamond R, Kabbani M, Dajani T, Hoekstra F, Magorno M, Beam C, Holst J, Chauhan V, Wilson N, Bononi P, Sperl M, Millward A, Eaton M, Dean L, Olshan J, Renna H, Boulware D, Milliard C, Snyder D, Beaman S, Burch K, Chester J, Ahmann A, Wollam B, DeFrang D, Fitch R, Jahnke K, Bounmananh L, Hanavan K, Klopfenstein B, Nicol L, Bergstrom R, Noland T, Brodksy J, Bacon L, Quintos J, Topor L, Bialo S, Bream S, Bancroft B, Soto A, Lagarde W, Lockemer H, Vanderploeg T, Ibrahim M, Huie M, Sanchez V, Edelen R, Marchiando R, Freeman D, Palmer J, Repas T, Wasson M, Auker P, Culbertson J, Kieffer T, Voorhees D, Borgwardt T, DeRaad L, Eckert K, Gough J, Isaacson E, Kuhn H, Carroll A, Schubert M, Francis G, Hagan S, Le T, Penn M, Wickham E, Leyva C, Ginem J, Rivera K, Padilla J, Rodriguez I, Jospe N, Czyzyk J, Johnson B, Nadgir U, Marlen N, Prakasam G, Rieger C, Granger M, Glaser N, Heiser E, Harris B, Foster C, Slater H, Wheeler K, Donaldson D, Murray M, Hale D, Tragus R, Holloway M, Word D, Lynch J, Pankratz L, Rogers W, Newfield R, Holland S, Hashiguchi M, Gottschalk M, Philis-Tsimikas A, Rosal R, Kieffer M, Franklin S, Guardado S, Bohannon N, Garcia M, Aguinaldo T, Phan J, Barraza V, Cohen D, Pinsker J, Khan U, Lane P, Wiley J, Jovanovic L, Misra P, Wright M, Cohen D, Huang K, Skiles M, Maxcy S, Pihoker C, Cochrane K, Nallamshetty L, Fosse J, Kearns S, Klingsheim M, Wright N, Viles L, Smith H, Heller S, Cunningham M, Daniels A, Zeiden L, Parrimon Y, Field J, Walker R, Griffin K, Bartholow L, Erickson C, Howard J, Krabbenhoft B, Sandman C, Vanveldhuizen A, Wurlger J, Paulus K, Zimmerman A, Hanisch K, Davis-Keppen L, Cotterill A, Kirby J, Harris M, Schmidt A, Kishiyama C, Flores C, Milton J, Ramiro J, Martin W, Whysham C, Yerka A, Freels T, Hassing J, Webster J, Green R, Carter P, Galloway J, Hoelzer D, Ritzie AQL, Roberts S, Said S, Sullivan P, Allen H, Reiter E, Feinberg E, Johnson C, Newhook L, Hagerty D, White N, Sharma A, Levandoski L, Kyllo J, Johnson M, Benoit C, Iyer P, Diamond F, Hosono H, Jackman S, Barette L, Jones P, Shor A, Sills I, Bzdick S, Bulger J, Weinstock R, Douek I, Andrews R, Modgill G, Gyorffy G, Robin L, Vaidya N, Song X, Crouch S, O’Brien K, Thompson C, Thorne N, Blumer J, Kalic J, Klepek L, Paulett J, Rosolowski B, Horner J, Terry A, Watkins M, Casey J, Carpenter K, Burns C, Horton J, Pritchard C, Soetaert D, Wynne A, Kaiserman K, Halvorson M, Weinberger J, Chin C, Molina O, Patel C, Senguttuvan R, Wheeler M, Furet O, Steuhm C, Jelley D, Goudeau S, Chalmers L, Wootten M, Greer D, Panagiotopoulos C, Metzger D, Nguyen D, Horowitz M, Christiansen M, Glades E, Morimoto C, Macarewich M, Norman R, Harding P, Patin K, Vargas C, Barbanica A, Yu A, Vaidyanathan P, Osborne W, Mehra R, Kaster S, Neace S, Horner J, McDonough S, Reeves G, Cordrey C, Marrs L, Miller T, Dowshen S, Doyle D, Walker S, Catte D, Dean H, Drury-Brown M, McGee PF, Hackman B, Lee M, Malkani S, Cullen K, Johnson K, Hampton P, McCarrell M, Curtis C, Paul E, Zambrano Y, Hess KO, Phoebus D, Quinlan S, Raiden E, Batts E, Buddy C, Kirpatrick K, Ramey M, Shultz A, Webb C, Romesco M, Fradkin J, Blumberg E, Beck G, Brillon D, Gubitosi-Klug R, Laffel L, Veatch R, Wallace D, Braun J, Lernmark A, Lo B, Mitchell H, Naji A, Nerup J, Orchard T, Steffes M, Tsiatis A, Zinman B, Loechelt B, Baden L, Green M, Weinberg A, Marcovina S, Palmer JP, Weinberg A, Yu L, Babu S, Winter W, Eisenbarth GS, Bingley P, Clynes R, DiMeglio L, Eisenbarth G, Hays B, Marks J, Matheson D, Rodriguez H, Wilson D, Redondo MJ, Gomez D, Zheng X, Pena S, Pietropaolo M, Batts E, Brown T, Buckner J, Dove A, Hammond M, Hefty D, Klein J, Kuhns K, Letlau M, Lord S, McCulloch-Olson M, Miller L, Nepom G, Odegard J, Ramey M, Sachter E, St. Marie M, Stickney K, VanBuecken D, Vellek B, Webber C, Allen L, Bollyk J, Hilderman N, Ismail H, Lamola S, Sanda S, Vendettuoli H, Tridgell D, Monzavi R, Bock M, Fisher L, Halvorson M, Jeandron D, Kim M, Wood J, Geffner M, Kaufman F, Parkman R, Salazar C, Goland R, Clynes R, Cook S, Freeby M, Gallagher MP, Gandica R, Greenberg E, Kurland A, Pollak S, Wolk A, Chan M, Koplimae L, Levine E, Smith K, Trast J, DiMeglio L, Blum J, Evans-Molina C, Hufferd R, Jagielo B, Kruse C, Patrick V, Rigby M, Spall M, Swinney K, Terrell J, Christner L, Ford L, Lynch S, Menendez M, Merrill P, Pescovitz M, Rodriguez H, Alleyn C, Baidal D, Fay S, Gaglia J, Resnick B, Szubowicz S, Weir G, Benjamin R, Conboy D, deManbey A, Jackson R, Jalahej H, Orban T, Ricker A, Wolfsdorf J, Zhang HH, Wilson D, Aye T, Baker B, Barahona K, Buckingham B, Esrey K, Esrey T, Fathman G, Snyder R, Aneja B, Chatav M, Espinoza O, Frank E, Liu J, Perry J, Pyle R, Rigby A, Riley K, Soto A, Gitelman S, Adi S, Anderson M, Berhel A, Breen K, Fraser K, Gerard-Gonzalez A, Jossan P, Lustig R, Moassesfar S, Mugg A, Ng D, Prahalod P, Rangel-Lugo M, Sanda S, Tarkoff J, Torok C, Wesch R, Aslan I, Buchanan J, Cordier J, Hamilton C, Hawkins L, Ho T, Jain A, Ko K, Lee T, Phelps S, Rosenthal S, Sahakitrungruang T, Stehl L, Taylor L, Wertz M, Wong J, Philipson L, Briars R, Devine N, Littlejohn E, Grant T, Gottlieb P, Klingensmith G, Steck A, Alkanani A, Bautista K, Bedoy R, Blau A, Burke B, Cory L, Dang M, Fitzgerald-Miller L, Fouts A, Gage V, Garg S, Gesauldo P, Gutin R, Hayes C, Hoffman M, Ketchum K, Logsden-Sackett N, Maahs D, Messer L, Meyers L, Michels A, Peacock S, Rewers M, Rodriguez P, Sepulbeda F, Sippl R, Steck A, Taki I, Tran BK, Tran T, Wadwa RP, Zeitler P, Barker J, Barry S, Birks L, Bomsburger L, Bookert T, Briggs L, Burdick P, Cabrera R, Chase P, Cobry E, Conley A, Cook G, Daniels J, DiDomenico D, Eckert J, Ehler A, Eisenbarth G, Fain P, Fiallo-Scharer R, Frank N, Goettle H, Haarhues M, Harris S, Horton L, Hutton J, Jeffrrey J, Jenison R, Jones K, Kastelic W, King MA, Lehr D, Lungaro J, Mason K, Maurer H, Nguyen L, Proto A, Realsen J, Schmitt K, Schwartz M, Skovgaard S, Smith J, Vanderwel B, Voelmle M, Wagner R, Wallace A, Walravens P, Weiner L, Westerhoff B, Westfall E, Widmer K, Wright H, Schatz D, Abraham A, Atkinson M, Cintron M, Clare-Salzler M, Ferguson J, Haller M, Hosford J, Mancini D, Rohrs H, Silverstein J, Thomas J, Winter W, Cole G, Cook R, Coy R, Hicks E, Lewis N, Marks J, Pugliese A, Blaschke C, Matheson D, Sanders-Branca N, Sosenko J, Arazo L, Arce R, Cisneros M, Sabbag S, Moran A, Gibson C, Fife B, Hering B, Kwong C, Leschyshyn J, Nathan B, Pappenfus B, Street A, Boes MA, Eck SP, Finney L, Fischer TA, Martin A, Muzamhindo CJ, Rhodes M, Smith J, Wagner J, Wood B, Becker D, Delallo K, Diaz A, Elnyczky B, Libman I, Pasek B, Riley K, Trucco M, Copemen B, Gwynn D, Toledo F, Rodriguez H, Bollepalli S, Diamond F, Eyth E, Henson D, Lenz A, Shulman D, Raskin P, Adhikari S, Dickson B, Dunnigan E, Lingvay I, Pruneda L, Ramos-Roman M, Raskin P, Rhee C, Richard J, Siegelman M, Sturges D, Sumpter K, White P, Alford M, Arthur J, Aviles-Santa ML, Cordova E, Davis R, Fernandez S, Fordan S, Hardin T, Jacobs A, Kaloyanova P, Lukacova-Zib I, Mirfakhraee S, Mohan A, Noto H, Smith O, Torres N, Wherrett D, Balmer D, Eisel L, Kovalakovska R, Mehan M, Sultan F, Ahenkorah B, Cevallos J, Razack N, Ricci MJ, Rhode A, Srikandarajah M, Steger R, Russell WE, Black M, Brendle F, Brown A, Moore D, Pittel E, Robertson A, Shannon A, Thomas JW, Herold K, Feldman L, Sherwin R, Tamborlane W, Weinzimer S, Toppari J, Kallio T, Kärkkäinen M, Mäntymäki E, Niininen T, Nurmi B, Rajala P, Romo M, Suomenrinne S, Näntö-Salonen K, Simell O, Simell T, Bosi E, Battaglia M, Bianconi E, Bonfanti R, Grogan P, Laurenzi A, Martinenghi S, Meschi F, Pastore M, Falqui L, Muscato MT, Viscardi M, Castleden H, Farthing N, Loud S, Matthews C, McGhee J, Morgan A, Pollitt J, Elliot-Jones R, Wheaton C, Knip M, Siljander H, Suomalainen H, Colman P, Healy F, Mesfin S, Redl L, Wentworth J, Willis J, Farley M, Harrison L, Perry C, Williams F, Mayo A, Paxton J, Thompson V, Volin L, Fenton C, Carr L, Lemon E, Swank M, Luidens M, Salgam M, Sharma V, Schade D, King C, Carano R, Heiden J, Means N, Holman L, Thomas I, Madrigal D, Muth T, Martin C, Plunkett C, Ramm C, Auchus R, Lane W, Avots E, Buford M, Hale C, Hoyle J, Lane B, Muir A, Shuler S, Raviele N, Ivie E, Jenkins M, Lindsley K, Hansen I, Fadoju D, Felner E, Bode B, Hosey R, Sax J, Jefferies C, Mannering S, Prentis R, She J, Stachura M, Hopkins D, Williams J, Steed L, Asatapova E, Nunez S, Knight S, Dixon P, Ching J, Donner T, Longnecker S, Abel K, Arcara K, Blackman S, Clark L, Cooke D, Plotnick L, Levin P, Bromberger L, Klein K, Sadurska K, Allen C, Michaud D, Snodgrass H, Burghen G, Chatha S, Clark C, Silverberg J, Wittmer C, Gardner J, LeBoeuf C, Bell P, McGlore O, Tennet H, Alba N, Carroll M, Baert L, Beaton H, Cordell E, Haynes A, Reed C, Lichter K, McCarthy P, McCarthy S, Monchamp T, Roach J, Manies S, Gunville F, Marosok L, Nelson T, Ackerman K, Rudolph J, Stewart M, McCormick K, May S, Falls T, Barrett T, Dale K, Makusha L, McTernana C, Penny-Thomas K, Sullivan K, Narendran P, Robbie J, Smith D, Christensen R, Koehler B, Royal C, Arthur T, Houser H, Renaldi J, Watsen S, Wu P, Lyons L, House B, Yu J, Holt H, Nation M, Vickers C, Watling R, Heptulla R, Trast J, Agarwal C, Newell D, Katikaneni R, Gardner C, Del Rio A, Logan A, Collier H, Rishton C, Whalley G, Ali A, Ramtoola S, Quattrin T, Mastrandea L, House A, Ecker M, Huang C, Gougeon C, Ho J, Pacuad D, Dunger D, May J, O’Brien C, Acerini C, Salgin B, Thankamony A, Williams R, Buse J, Fuller G, Duclos M, Tricome J, Brown H, Pittard D, Bowlby D, Blue A, Headley T, Bendre S, Lewis K, Sutphin K, Soloranzo C, Puskaric J, Madison H, Rincon M, Carlucci M, Shridharani R, Rusk B, Tessman E, Huffman D, Abrams H, Biederman B, Jones M, Leathers V, Brickman W, Petrie P, Zimmerman D, Howard J, Miller L, Alemzadeh R, Mihailescu D, Melgozza-Walker R, Abdulla N, Boucher-Berry C, Ize-Ludlow D, Levy R, Swenson Brousell C, Scott R, Heenan H, Lunt H, Kendall D, Willis J, Darlow B, Crimmins N, Edler D, Weis T, Schultz C, Rogers D, Latham D, Mawhorter C, Switzer C, Spencer W, Konstantnopoulus P, Broder S, Klein J, Bachrach B, Gardner M, Eichelberger D, Knight L, Szadek L, Welnick G, Thompson B, Hoffman R, Revell A, Cherko J, Carter K, Gilson E, Haines J, Arthur G, Bowen B, Zipf W, Graves P, Lozano R, Seiple D, Spicer K, Chang A, Fregosi J, Harbinson J, Paulson C, Stalters S, Wright P, Zlock D, Freeth A, Victory J, Maheshwari H, Maheshwari A, Holmstrom T, Bueno J, Arguello R, Ahern J, Noreika L, Watson V, Hourse S, Breyer P, Kissel C, Nicholson Y, Pfeifer M, Almazan S, Bajaj J, Quinn M, Funk K, McCance J, Moreno E, Veintimilla R, Wells A, Cook J, Trunnel S, Transue D, Surhigh J, Bezzaire D, Moltz K, Zacharski E, Henske J, Desai S, Frizelis K, Khan F, Sjoberg R, Allen K, Manning P, Hendry G, Taylor B, Jones S, Couch R, Danchak R, Lieberman D, Strader W, Bencomo M, Bailey T, Bedolla L, Roldan C, Moudiotis C, Vaidya B, Anning C, Bunce S, Estcourt S, Folland E, Gordon E, Harrill C, Ireland J, Piper J, Scaife L, Sutton K, Wilkins S, Costelloe M, Palmer J, Casas L, Miller C, Burgard M, Erickson C, Hallanger-Johnson J, Clark P, Taylor W, Galgani J, Banerjee S, Banda C, McEowen D, Kinman R, Lafferty A, Gillett S, Nolan C, Pathak M, Sondrol L, Hjelle T, Hafner S, Kotrba J, Hendrickson R, Cemeroglu A, Symington T, Daniel M, Appiagyei-Dankah Y, Postellon D, Racine M, Kleis L, Barnes K, Godwin S, McCullough H, Shaheen K, Buck G, Noel L, Warren M, Weber S, Parker S, Gillespie I, Nelson B, Frost C, Amrhein J, Moreland E, Hayes A, Peggram J, Aisenberg J, Riordan M, Zasa J, Cummings E, Scott K, Pinto T, Mokashi A, McAssey K, Helden E, Hammond P, Dinning L, Rahman S, Ray S, Dimicri C, Guppy S, Nielsen H, Vogel C, Ariza C, Morales L, Chang Y, Gabbay R, Ambrocio L, Manley L, Nemery R, Charlton W, Smith P, Kerr L, Steindel-Kopp B, Alamaguer M, Tabisola-Nuesca E, Pendersen A, Larson N, Cooper-Olviver H, Chan D, Fitz-Patrick D, Carreira T, Park Y, Ruhaak R, Liljenquist D. A Type 1 Diabetes Genetic Risk Score Predicts Progression of Islet Autoimmunity and Development of Type 1 Diabetes in Individuals at Risk. Diabetes Care 2018; 41:1887-1894. [PMID: 30002199 PMCID: PMC6105323 DOI: 10.2337/dc18-0087] [Citation(s) in RCA: 86] [Impact Index Per Article: 14.3] [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: 01/11/2018] [Accepted: 06/06/2018] [Indexed: 02/03/2023]
Abstract
OBJECTIVE We tested the ability of a type 1 diabetes (T1D) genetic risk score (GRS) to predict progression of islet autoimmunity and T1D in at-risk individuals. RESEARCH DESIGN AND METHODS We studied the 1,244 TrialNet Pathway to Prevention study participants (T1D patients' relatives without diabetes and with one or more positive autoantibodies) who were genotyped with Illumina ImmunoChip (median [range] age at initial autoantibody determination 11.1 years [1.2-51.8], 48% male, 80.5% non-Hispanic white, median follow-up 5.4 years). Of 291 participants with a single positive autoantibody at screening, 157 converted to multiple autoantibody positivity and 55 developed diabetes. Of 953 participants with multiple positive autoantibodies at screening, 419 developed diabetes. We calculated the T1D GRS from 30 T1D-associated single nucleotide polymorphisms. We used multivariable Cox regression models, time-dependent receiver operating characteristic curves, and area under the curve (AUC) measures to evaluate prognostic utility of T1D GRS, age, sex, Diabetes Prevention Trial-Type 1 (DPT-1) Risk Score, positive autoantibody number or type, HLA DR3/DR4-DQ8 status, and race/ethnicity. We used recursive partitioning analyses to identify cut points in continuous variables. RESULTS Higher T1D GRS significantly increased the rate of progression to T1D adjusting for DPT-1 Risk Score, age, number of positive autoantibodies, sex, and ethnicity (hazard ratio [HR] 1.29 for a 0.05 increase, 95% CI 1.06-1.6; P = 0.011). Progression to T1D was best predicted by a combined model with GRS, number of positive autoantibodies, DPT-1 Risk Score, and age (7-year time-integrated AUC = 0.79, 5-year AUC = 0.73). Higher GRS was significantly associated with increased progression rate from single to multiple positive autoantibodies after adjusting for age, autoantibody type, ethnicity, and sex (HR 2.27 for GRS >0.295, 95% CI 1.47-3.51; P = 0.0002). CONCLUSIONS The T1D GRS independently predicts progression to T1D and improves prediction along T1D stages in autoantibody-positive relatives.
Collapse
Affiliation(s)
- Maria J. Redondo
- Texas Children’s Hospital, Baylor College of Medicine, Houston, TX
| | | | - Andrea K. Steck
- Barbara Davis Center for Childhood Diabetes, University of Colorado School of Medicine, Aurora, CO
| | - Seth Sharp
- Institute of Biomedical and Clinical Science, University of Exeter, Exeter, U.K
| | - John M. Wentworth
- Walter and Eliza Hall Institute of Medical Research and Royal Melbourne Hospital, Parkville, Victoria, Australia
| | - Michael N. Weedon
- Institute of Biomedical and Clinical Science, University of Exeter, Exeter, U.K
| | | | | | | | | | - Richard A. Oram
- Institute of Biomedical and Clinical Science, University of Exeter, Exeter, U.K
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
22
|
Morrison M, Maia PD, Kutz JN. Preventing Neurodegenerative Memory Loss in Hopfield Neuronal Networks Using Cerebral Organoids or External Microelectronics. Comput Math Methods Med 2017; 2017:6102494. [PMID: 29312461 PMCID: PMC5605816 DOI: 10.1155/2017/6102494] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/05/2017] [Accepted: 06/06/2017] [Indexed: 12/18/2022]
Abstract
Developing technologies have made significant progress towards linking the brain with brain-machine interfaces (BMIs) which have the potential to aid damaged brains to perform their original motor and cognitive functions. We consider the viability of such devices for mitigating the deleterious effects of memory loss that is induced by neurodegenerative diseases and/or traumatic brain injury (TBI). Our computational study considers the widely used Hopfield network, an autoassociative memory model in which neurons converge to a stable state pattern after receiving an input resembling the given memory. In this study, we connect an auxiliary network of neurons, which models the BMI device, to the original Hopfield network and train it to converge to its own auxiliary memory patterns. Injuries to the original Hopfield memory network, induced through neurodegeneration, for instance, can then be analyzed with the goal of evaluating the ability of the BMI to aid in memory retrieval tasks. Dense connectivity between the auxiliary and Hopfield networks is shown to promote robustness of memory retrieval tasks for both optimal and nonoptimal memory sets. Our computations estimate damage levels and parameter ranges for which full or partial memory recovery is achievable, providing a starting point for novel therapeutic strategies.
Collapse
Affiliation(s)
- M. Morrison
- Department of Applied Mathematics, University of Washington, Seattle, WA, USA
- Center for Sensorimotor Neural Engineering, University of Washington, Seattle, WA, USA
| | - P. D. Maia
- Department of Applied Mathematics, University of Washington, Seattle, WA, USA
| | - J. N. Kutz
- Department of Applied Mathematics, University of Washington, Seattle, WA, USA
| |
Collapse
|
23
|
Morrison M. EXHIBITING CREATIVE STRENGTH IN THE COMMUNITY: FAMILIAL CAREGIVING, THE ARTS AND DEMENTIA. Innov Aging 2017. [DOI: 10.1093/geroni/igx004.2849] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- M. Morrison
- Community Health & Humanitys, Memorial University of Newfoundland, St. John’s, Newfoundland, Canada
| |
Collapse
|
24
|
Hoedt EC, OCuiv P, Morrison M. 0224 Methane matters: From blue tinged moos, to boozy roos, and for the health of humans too. J Anim Sci 2016. [DOI: 10.2527/jam2016-0224] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
|
25
|
Todd ME, Dammers PM, Adams SG, Todd HM, Morrison M. An examination of a proposed scoring procedure for the clock drawing test: Reliability and predictive validity of the clock scoring system (CSS). ACTA ACUST UNITED AC 2016. [DOI: 10.1177/153331759501000406] [Citation(s) in RCA: 10] [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: 11/15/2022]
Abstract
The clock drawing test (CDT) is usedfor a variety of diagnostic purposes, including screening for dementia. Individuals have relied on subjective judgments in distinguishing between normal and abnormal clocks. This studyproposesaformal, objective scoring procedure called the Clock Scoring System (CSS). The CDTwas administered to 23 dementia patients and 27 normal, elderly controls. The inter-rater reliability estimates of the CSS rangedfrom 82 to .98 across diagnostic groups. Scores discriminated between the patient and comparison groups, even after controlling for age and education. A discussion of the usefulness of this measure as well as ftture research directions is presented.
Collapse
Affiliation(s)
- M. E. Todd
- Memory Disorder Center, Neurological Institute, North Broward Medical Center, Fort Lauderdale, Florida
| | | | | | - H. M. Todd
- Memory Disorder Center; Neurological Institute, North Broward Medical Center; Fort Lauderdale, Florida
| | - M. Morrison
- Louisiana State University, Baton Rouge, Louisiana
| |
Collapse
|
26
|
Shanahan ER, Zhong L, Talley NJ, Morrison M, Holtmann G. Letter: investigating the intestinal mucosa-associated microbiota - relevance and potential pitfalls. Authors' reply. Aliment Pharmacol Ther 2016; 44:648-9. [PMID: 27511137 DOI: 10.1111/apt.13741] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/08/2022]
Affiliation(s)
- E R Shanahan
- Department of Gastroenterology and Hepatology, Princess Alexandra Hospital, Brisbane, Qld, Australia. .,Faculty of Medicine and Biomedical Sciences, Faculty of Health and Behavioral Sciences, The University of Queensland, Brisbane, Qld, Australia. .,Microbial Biology and Metagenomics, The University of Queensland Diamantina Institute, Brisbane, Qld, Australia. .,Translational Research Institute (TRI), Brisbane, Qld, Australia.
| | - L Zhong
- Department of Gastroenterology and Hepatology, Princess Alexandra Hospital, Brisbane, Qld, Australia.,Faculty of Medicine and Biomedical Sciences, Faculty of Health and Behavioral Sciences, The University of Queensland, Brisbane, Qld, Australia.,Translational Research Institute (TRI), Brisbane, Qld, Australia
| | - N J Talley
- Faculty of Health, The University of Newcastle, Callaghan, NSW, Australia
| | - M Morrison
- Microbial Biology and Metagenomics, The University of Queensland Diamantina Institute, Brisbane, Qld, Australia.,Translational Research Institute (TRI), Brisbane, Qld, Australia
| | - G Holtmann
- Department of Gastroenterology and Hepatology, Princess Alexandra Hospital, Brisbane, Qld, Australia.,Faculty of Medicine and Biomedical Sciences, Faculty of Health and Behavioral Sciences, The University of Queensland, Brisbane, Qld, Australia.,Translational Research Institute (TRI), Brisbane, Qld, Australia
| |
Collapse
|
27
|
Shanahan ER, Zhong L, Talley NJ, Morrison M, Holtmann G. Characterisation of the gastrointestinal mucosa-associated microbiota: a novel technique to prevent cross-contamination during endoscopic procedures. Aliment Pharmacol Ther 2016; 43:1186-96. [PMID: 27086880 DOI: 10.1111/apt.13622] [Citation(s) in RCA: 43] [Impact Index Per Article: 5.4] [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: 02/20/2016] [Revised: 03/09/2016] [Accepted: 03/22/2016] [Indexed: 12/13/2022]
Abstract
BACKGROUND The mucosa-associated microbiota appears to be highly relevant to host-microbe interactions in the gastrointestinal (GI) tract. Thus, precise characterisation of the mucosa-associated microbiota may provide important insights for diagnostic and therapeutic development. However, for technical reasons, mucosal biopsies taken during standard endoscopic procedures are potentially contaminated by GI luminal contents. AIM To develop and validate a biopsy device that minimises contamination during sampling of the mucosa-associated microbiota. METHODS A new, encased biopsy forceps was developed, the Brisbane Aseptic Biopsy Device (BABD). This comprises sterile forceps encased by a sheath with a plug at the tip, allowing targeted, aseptic sampling of the mucosa. Matched duodenal biopsies were obtained using the BABD, standard biopsy forceps, and a sterile brush, from patients undergoing upper GI endoscopy for iron deficiency (n = 6). Total genomic deoxyribonucleic acid (gDNA) was extracted from samples and bacterial 16S rRNA gene libraries sequenced to investigate the mucosa-associated microbiota. RESULTS Microbial DNA was recovered from biopsies obtained by the BABD, confirming the presence of a duodenal mucosa-associated microbiota. This microbiota was dominated by the genus Streptococcus, with lower levels of Prevotella, Veillonella and Neisseria. At the individual patient level, substantial differences were observed between matched samples obtained using the different devices. A greater degree of bacterial diversity was observed in samples collected using the standard forceps, indicating the BABD affords collection of samples more representative of the mucosa-associated microbiota, by precluding luminal cross-contamination. CONCLUSIONS Cross-contamination can occur when mucosal biopsies are taken during standard endoscopic procedures. Utilising the novel Brisbane Aseptic Biopsy Device can reduce cross-contamination, and it offers improved opportunities to more precisely examine host-mucosa-associated microbiota interactions.
Collapse
Affiliation(s)
- E R Shanahan
- Department of Gastroenterology and Hepatology, Princess Alexandra Hospital, Woolloongabba, Qld, Australia.,Faculty of Medicine and Biomedical Sciences, and Faculty of Health and Behavioral Sciences, The University of Queensland, Brisbane, Qld, Australia.,Microbial Biology and Metagenomics, The University of Queensland Diamantina Institute, Brisbane, Qld, Australia.,Translational Research Institute (TRI), Brisbane, Qld, Australia
| | - L Zhong
- Department of Gastroenterology and Hepatology, Princess Alexandra Hospital, Woolloongabba, Qld, Australia.,Faculty of Medicine and Biomedical Sciences, and Faculty of Health and Behavioral Sciences, The University of Queensland, Brisbane, Qld, Australia.,Translational Research Institute (TRI), Brisbane, Qld, Australia
| | - N J Talley
- Faculty of Health, The University of Newcastle, Callaghan, NSW, Australia
| | - M Morrison
- Microbial Biology and Metagenomics, The University of Queensland Diamantina Institute, Brisbane, Qld, Australia.,Translational Research Institute (TRI), Brisbane, Qld, Australia
| | - G Holtmann
- Department of Gastroenterology and Hepatology, Princess Alexandra Hospital, Woolloongabba, Qld, Australia.,Faculty of Medicine and Biomedical Sciences, and Faculty of Health and Behavioral Sciences, The University of Queensland, Brisbane, Qld, Australia.,Translational Research Institute (TRI), Brisbane, Qld, Australia
| |
Collapse
|
28
|
Wong ML, Inserra A, Lewis MD, Mastronardi CA, Leong L, Choo J, Kentish S, Xie P, Morrison M, Wesselingh SL, Rogers GB, Licinio J. Inflammasome signaling affects anxiety- and depressive-like behavior and gut microbiome composition. Mol Psychiatry 2016; 21:797-805. [PMID: 27090302 PMCID: PMC4879188 DOI: 10.1038/mp.2016.46] [Citation(s) in RCA: 360] [Impact Index Per Article: 45.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/21/2015] [Revised: 02/19/2016] [Accepted: 02/22/2016] [Indexed: 12/13/2022]
Abstract
The inflammasome is hypothesized to be a key mediator of the response to physiological and psychological stressors, and its dysregulation may be implicated in major depressive disorder. Inflammasome activation causes the maturation of caspase-1 and activation of interleukin (IL)-1β and IL-18, two proinflammatory cytokines involved in neuroimmunomodulation, neuroinflammation and neurodegeneration. In this study, C57BL/6 mice with genetic deficiency or pharmacological inhibition of caspase-1 were screened for anxiety- and depressive-like behaviors, and locomotion at baseline and after chronic stress. We found that genetic deficiency of caspase-1 decreased depressive- and anxiety-like behaviors, and conversely increased locomotor activity and skills. Caspase-1 deficiency also prevented the exacerbation of depressive-like behaviors following chronic stress. Furthermore, pharmacological caspase-1 antagonism with minocycline ameliorated stress-induced depressive-like behavior in wild-type mice. Interestingly, chronic stress or pharmacological inhibition of caspase-1 per se altered the fecal microbiome in a very similar manner. When stressed mice were treated with minocycline, the observed gut microbiota changes included increase in relative abundance of Akkermansia spp. and Blautia spp., which are compatible with beneficial effects of attenuated inflammation and rebalance of gut microbiota, respectively, and the increment in Lachnospiracea abundance was consistent with microbiota changes of caspase-1 deficiency. Our results suggest that the protective effect of caspase-1 inhibition involves the modulation of the relationship between stress and gut microbiota composition, and establishes the basis for a gut microbiota-inflammasome-brain axis, whereby the gut microbiota via inflammasome signaling modulate pathways that will alter brain function, and affect depressive- and anxiety-like behaviors. Our data also suggest that further elucidation of the gut microbiota-inflammasome-brain axis may offer novel therapeutic targets for psychiatric disorders.
Collapse
Affiliation(s)
- M-L Wong
- Mind and Brain Theme, South Australian Health and Medical Research Institute, Adelaide, SA, Australia
- Department of Psychiatry, Flinders Medical Centre, Adelaide, SA, Australia
| | - A Inserra
- Mind and Brain Theme, South Australian Health and Medical Research Institute, Adelaide, SA, Australia
- Department of Psychiatry, Flinders Medical Centre, Adelaide, SA, Australia
| | - M D Lewis
- Mind and Brain Theme, South Australian Health and Medical Research Institute, Adelaide, SA, Australia
- Department of Psychiatry, Flinders Medical Centre, Adelaide, SA, Australia
| | - C A Mastronardi
- Genomics and Predictive Medicine, The John Curtin School of Medical Research, Australian National University, Canberra, ACT, Australia
| | - L Leong
- Infection and Immunity Theme, South Australian Health and Medical Research Institute, Adelaide, SA, Australia
- Department of Microbiology and Infectious Diseases, Flinders University School of Medicine and Flinders Medical Centre, Adelaide, SA, Australia
| | - J Choo
- Infection and Immunity Theme, South Australian Health and Medical Research Institute, Adelaide, SA, Australia
- Department of Microbiology and Infectious Diseases, Flinders University School of Medicine and Flinders Medical Centre, Adelaide, SA, Australia
| | - S Kentish
- Gastrointestinal Vagal Afferent Research Group, The University of Adelaide, Adelaide, SA, Australia
| | - P Xie
- Department of Neurology, The First Affiliated Hospital of Chongqing Medical University, Chongqing Key Laboratory of Neurobiology, and Institute of Neuroscience and the Collaborative Innovation Center for Brain Science, Chongqing Medical University, Chongqing, China
| | - M Morrison
- Translational Research Institute, The University of Queensland Diamantine Institute, Wooloongabba, QLD, Australia
| | - S L Wesselingh
- Infection and Immunity Theme, South Australian Health and Medical Research Institute, Adelaide, SA, Australia
- Department of Microbiology and Infectious Diseases, Flinders University School of Medicine and Flinders Medical Centre, Adelaide, SA, Australia
| | - G B Rogers
- Infection and Immunity Theme, South Australian Health and Medical Research Institute, Adelaide, SA, Australia
- Department of Microbiology and Infectious Diseases, Flinders University School of Medicine and Flinders Medical Centre, Adelaide, SA, Australia
| | - J Licinio
- Mind and Brain Theme, South Australian Health and Medical Research Institute, Adelaide, SA, Australia
- Department of Psychiatry, Flinders Medical Centre, Adelaide, SA, Australia
| |
Collapse
|
29
|
Zhang L, Gowardman J, Morrison M, Runnegar N, Rickard CM. Microbial biofilms associated with intravascular catheter-related bloodstream infections in adult intensive care patients. Eur J Clin Microbiol Infect Dis 2015; 35:201-5. [PMID: 26610337 DOI: 10.1007/s10096-015-2530-7] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2015] [Accepted: 11/09/2015] [Indexed: 11/29/2022]
Abstract
Catheter-related bloodstream infection (CRBSI) is one of the most serious complications in hospitalised patients, leading to increased hospitalisation, intensive care admissions, extensive antibiotic treatment and mortality. A greater understanding of these bacterial infections is needed to improve the prevention and the management of CRBSIs. We describe here the systematic culture-independent evaluation of intravascular catheter (IVC) bacteriology. Twelve IVCs (6 central venous catheters and 6 arterial catheters) were collected from 6 patients. By using traditional culture methods, 3 patients were diagnosed with catheter colonisation including 1 patient who also had CRBSI, and 3 had no colonisation. From a total of 839,539 high-quality sequence reads from high-throughput sequencing, 8 microbial phyla and 76 diverse microbial genera were detected. All IVCs examined in this study were colonised with complex microbial communities including "non-colonised IVCs," as defined using traditional culture methods. Two main community types were observed: Enterobacteriaceae spp., dominant in patients without colonisation or CRBSI; and Staphylococcus spp., dominant in patients with colonisation and CRBSI. More diverse pathogens and a higher microbial diversity were present in patients with IVC colonisation and CRBSI. Community composition did not appear to be affected by patients' antibiotic treatment or IVC type. Characterisation of these communities is the first step in elucidating roles of these pathogens in disease progression, and to ultimately facilitate the improved prevention, refined diagnosis and management of CRBSI.
Collapse
Affiliation(s)
- L Zhang
- AVATAR Group, Research Centre for Health Practice Innovation, Menzies Health Institute Queensland, Griffith University, N48 Nathan Campus, 170 Kessels Road, Nathan QLD, 4111, Brisbane, Australia. .,The University of Queensland Diamantina Institute, Translational Research Institute, Woolloongabba, Brisbane, Australia.
| | - J Gowardman
- AVATAR Group, Research Centre for Health Practice Innovation, Menzies Health Institute Queensland, Griffith University, N48 Nathan Campus, 170 Kessels Road, Nathan QLD, 4111, Brisbane, Australia.,Department of Intensive Care Medicine, Royal Brisbane and Women's Hospital, Brisbane, Australia
| | - M Morrison
- The University of Queensland Diamantina Institute, Translational Research Institute, Woolloongabba, Brisbane, Australia
| | - N Runnegar
- Infection Management Services, Princess Alexandra Hospital, Brisbane, Australia.,University of Queensland School of Medicine, Brisbane, Australia
| | - C M Rickard
- AVATAR Group, Research Centre for Health Practice Innovation, Menzies Health Institute Queensland, Griffith University, N48 Nathan Campus, 170 Kessels Road, Nathan QLD, 4111, Brisbane, Australia.,Centre for Clinical Nursing, Royal Brisbane and Women's Hospital, Herston, Brisbane, Australia
| |
Collapse
|
30
|
Zhang L, Marsh N, Long D, Wei M, Morrison M, Rickard CM. Microbial diversity on intravascular catheters from paediatric patients. Eur J Clin Microbiol Infect Dis 2015; 34:2463-70. [PMID: 26515578 DOI: 10.1007/s10096-015-2504-9] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2015] [Accepted: 10/05/2015] [Indexed: 11/24/2022]
Abstract
Microorganisms play important roles in intravascular catheter (IVC)-related infections, which are the most serious complications in children with IVCs, leading to increased hospitalisation, intensive care admissions, extensive antibiotic treatment and mortality. A greater understanding of bacterial communities is needed in order to improve the management of infections. We describe here the systematic culture-independent evaluation of IVC bacteriology in IVC biofilms. Twenty-four IVC samples (six peripherally inserted central catheters, eight central venous catheters and ten arterial catheters) were collected from 24 paediatric patients aged 0 to 14 years old. Barcoded amplicon libraries produced from genes coding 16S rRNA and roll-plate culture methods were used to determine the microbial composition of these samples. From a total of 1,043,406 high-quality sequence reads, eight microbial phyla and 136 diverse microbial genera were detected, separated into 12,224 operational taxonomic units (OTUs). Three phyla (Actinobacteria, Firmicutes and Proteobacteria) predominate the microorganism on the IVC surfaces, with Firmicutes representing nearly half of the OTUs found. Among the Firmicutes, Staphylococcus (15.0% of 16S rRNA reads), Streptococcus (9.6%) and Bacillus (6.1%) were the most common. Community composition did not appear to be affected by patients' age, gender, antibiotic treatment or IVC type. Differences in IVC microbiota were more likely associated with events arising from catheter dwell time, rather than the type of IVC used.
Collapse
Affiliation(s)
- L Zhang
- AVATAR Group, Research Centre for Health Practice Innovation, Menzies Health Institute Queensland, Griffith University, Brisbane, Australia. .,Translational Research Institute, The University of Queensland Diamantina Institute, Woolloongabba, Brisbane, Australia. .,Griffith University, N48 Nathan Campus, 170 Kessels Road, Nathan, QLD, 4111, Australia.
| | - N Marsh
- AVATAR Group, Research Centre for Health Practice Innovation, Menzies Health Institute Queensland, Griffith University, Brisbane, Australia.,Centre for Clinical Nursing, Royal Brisbane and Women's Hospital, Herston, Brisbane, Australia
| | - D Long
- AVATAR Group, Research Centre for Health Practice Innovation, Menzies Health Institute Queensland, Griffith University, Brisbane, Australia.,Paediatric Intensive Care Unit, Lady Cilento Children's Hospital, Brisbane, Australia
| | - M Wei
- School of Medical Science, Menzies Health Institute Queensland, Griffith University, Gold Coast campus, Southport, Australia
| | - M Morrison
- Translational Research Institute, The University of Queensland Diamantina Institute, Woolloongabba, Brisbane, Australia
| | - C M Rickard
- AVATAR Group, Research Centre for Health Practice Innovation, Menzies Health Institute Queensland, Griffith University, Brisbane, Australia.,Centre for Clinical Nursing, Royal Brisbane and Women's Hospital, Herston, Brisbane, Australia
| |
Collapse
|
31
|
Affiliation(s)
- M. Morrison
- Department of Dermatology; St. Joseph Mercy Hospital; Ypsilanti MI USA
| | - M. Merati
- Michigan State University; East Lansing MI USA
| | - J. Ramirez
- Department of Dermatopathology; St. Joseph Mercy Hospital; Ypsilanti MI USA
| | - H.C. Cha
- Department of Dermatology; St. Joseph Mercy Hospital; Ypsilanti MI USA
| | - A. LaFond
- Department of Dermatology; St. Joseph Mercy Hospital; Ypsilanti MI USA
| |
Collapse
|
32
|
Holtmann GJ, Talley NJ, Morrison M. Letter: inverse correlation between Helicobacter pylori and obesity - a conclusion too early? Authors' reply. Aliment Pharmacol Ther 2014; 40:1120. [PMID: 25280261 DOI: 10.1111/apt.12967] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/08/2022]
Affiliation(s)
- G J Holtmann
- Department of Gastroenterology and Hepatology, Princess Alexandra Hospital, Brisbane, Qld, Australia; Faculty of Medicine and Biomedicine & Faculty of Health and Behavioural Sciences, University of Queensland, St Lucia, Qld, Australia.
| | | | | |
Collapse
|
33
|
Morrison M, Golestanirad L, Schweizer T, Graham S, Das S. NI-59 * TABLET TECHNOLOGY FOR IMPROVED PREOPERATIVE SPEECH MAPPING USING FUNCTIONAL MRI IN PATIENTS WITH LOW-GRADE GLIOMA. Neuro Oncol 2014. [DOI: 10.1093/neuonc/nou264.57] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
|
34
|
Morrison M, Momjian S, Friedrich H, Landis BN. [Olfactory function after transsphenoidal pituitary surgery]. Rev Med Suisse 2014; 10:1806-1810. [PMID: 25417336] [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: 06/04/2023]
Abstract
Pituitary surgery remains mainly performed trough a transnasal, transseptal and transsphenoidal way. This surgical approach can damage intranasal structures and, in particular, may impede olfactory function. Our study investigates olfactory function in 67 patients undergoing this type of surgery before and 3 months after surgery. Mean olfactory scores were identical pre- and postoperatively. However, on an individual bases seven percent of the patients showed a clear decrease in olfactory function. In conclusion, transnasal, transseptal and transsphenoidal surgery is relativelv safe with regards to olfactory function
Collapse
|
35
|
Kim M, Wang L, Morrison M, Yu Z. Development of a phylogenetic microarray for comprehensive analysis of ruminal bacterial communities. J Appl Microbiol 2014; 117:949-60. [DOI: 10.1111/jam.12598] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2014] [Revised: 06/22/2014] [Accepted: 07/12/2014] [Indexed: 12/14/2022]
Affiliation(s)
- M. Kim
- Department of Animal Sciences; The Ohio State University; Columbus OH USA
| | - L. Wang
- Department of Animal Sciences; The Ohio State University; Columbus OH USA
| | - M. Morrison
- Department of Animal Sciences; The Ohio State University; Columbus OH USA
- University of Queensland Diamantina Institute; Woolloongabba Qld Australia
| | - Z. Yu
- Department of Animal Sciences; The Ohio State University; Columbus OH USA
| |
Collapse
|
36
|
Morrison M, van der Heijden R, Heeringa P, Kaijzel E, Verschuren L, Blomhoff R, Kooistra T, Kleemann R. Epicatechin attenuates atherosclerosis and exerts anti-inflammatory effects on diet induced human-crp and nfkb in vivo. Atherosclerosis 2014. [DOI: 10.1016/j.atherosclerosis.2014.05.402] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
|
37
|
Iveson P, Ahmad R, Bapat M, Morrison M, Olsson A, Meijer A. Preparation and biological evaluation of a 99mTc labelled fibroblast activation protein inhibitor. Nucl Med Biol 2014. [DOI: 10.1016/j.nucmedbio.2014.05.048] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
|
38
|
Lender N, Talley NJ, Enck P, Haag S, Zipfel S, Morrison M, Holtmann GJ. Review article: Associations between Helicobacter pylori and obesity--an ecological study. Aliment Pharmacol Ther 2014; 40:24-31. [PMID: 24832176 DOI: 10.1111/apt.12790] [Citation(s) in RCA: 62] [Impact Index Per Article: 6.2] [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: 09/04/2013] [Revised: 09/18/2013] [Accepted: 04/21/2014] [Indexed: 02/06/2023]
Abstract
BACKGROUND There is emerging debate over the effect of Helicobacter pylori infection on body mass index (BMI). A recent study demonstrated that individuals who underwent H. pylori eradication developed significant weight gain as compared to subjects with untreated H. pylori colonisation. AIM To elucidate the association between H. pylori colonisation and the prevalence of overweight and obesity in developed countries. METHODS The literature was searched for publications reporting data on H. pylori prevalence rates and obesity prevalence rates. Studies selected reported H. pylori prevalence in random population samples with sample sizes of more than 100 subjects in developed countries (GDP >25,000 US$/person/year). Corresponding BMI distributions for corresponding countries and regions were identified. Nonparametric tests were used to compare the association between H. pylori and overweight and obesity rates. RESULTS Forty-nine studies with data from 10 European countries, Japan, the US and Australia were identified. The mean H. pylori rate was 44.1% (range 17-75%), the mean rates for obesity and overweight were 46.6 (± 16)% and 14.2 (± 8.9)%. The rate of obesity and overweight were inversely and significantly (r = 0.29, P < 0.001) correlated with the prevalence of H. pylori infection. CONCLUSIONS There is an inverse correlation between H. pylori prevalence and rate of overweight/obesity in countries of the developed world. Thus, the gradual decrease of the H. pylori colonisation that has been observed in recent decades (or factors associated with decrease of) could be causally related to the obesity endemic observed in the Western world.
Collapse
Affiliation(s)
- N Lender
- Department of Gastroenterology & Hepatology, Princess Alexandra Hospital, Woolloongabba, Qld, Australia; Faculty of Medicine and Biomedicine & Faculty of Health and Behavioural Sciences, University of Queensland, St Lucia, Qld, Australia
| | | | | | | | | | | | | |
Collapse
|
39
|
Kang S, Evans P, Morrison M, McSweeney C. Identification of metabolically active proteobacterial and archaeal communities in the rumen by DNA- and RNA-derived 16S rRNA gene. J Appl Microbiol 2013; 115:644-53. [DOI: 10.1111/jam.12270] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2012] [Revised: 05/14/2013] [Accepted: 05/25/2013] [Indexed: 11/27/2022]
Affiliation(s)
- S.H. Kang
- CSIRO Animal, Food and Health Sciences; Queensland Bioscience Precinct; St. Lucia Brisbane Qld Australia
| | - P. Evans
- CSIRO Animal, Food and Health Sciences; Queensland Bioscience Precinct; St. Lucia Brisbane Qld Australia
| | - M. Morrison
- CSIRO Animal, Food and Health Sciences; Queensland Bioscience Precinct; St. Lucia Brisbane Qld Australia
- The Ohio State University; Columbus OH USA
| | - C. McSweeney
- CSIRO Animal, Food and Health Sciences; Queensland Bioscience Precinct; St. Lucia Brisbane Qld Australia
| |
Collapse
|
40
|
Abstract
The objective of this study was to generate a phylogenetic diversity census of bacteria identified in the intestinal tract of chickens and turkeys using a naïve analysis of all the curated 16S rRNA gene sequences archived in public databases. High-quality sequences of chicken and turkey gastrointestinal origin (3,184 and 1,345, respectively) were collected from the GenBank, Ribosomal Database Project, and Silva comprehensive ribosomal RNA database. Through phylogenetic and statistical analysis, 915 and 464 species-equivalent operational taxonomic units (defined at 0.03 phylogenetic distance) were found in the chicken and the turkey sequence collections, respectively. Of the 13 bacterial phyla identified in both bird species, Firmicutes, Bacteroidetes, and Proteobacteria were the largest phyla, accounting for >90% of all the sequences. The chicken sequences represent 117 established bacterial genera, and the turkey sequences represent 69 genera. The most predominant genera found in both the chicken and the turkey sequence data sets were Clostridium, Ruminococcus, Lactobacillus, and Bacteroides, but with different distribution between the 2 bird species. The estimated coverage of bacterial diversity of chicken and turkey reached 89 and 68% at species-equivalent and 93 and 73% at genus-equivalent levels, respectively. Less than 7,000 bacterial sequences from each bird species from various locations would be needed to reach 99% coverage for either bird species. Based on annotation of the sequence records, cecum was the most sampled gut segment. Chickens and turkeys were shown to have distinct intestinal microbiomes, sharing only 16% similarity at the species-equivalent level. Besides identifying gaps in knowledge on bacterial diversity in poultry gastrointestinal tract, the bacterial census generated in this study may serve as a framework for future studies and development of analytic tools.
Collapse
Affiliation(s)
- S Wei
- Department of Animal Sciences, The Ohio State University, Columbus, OH, USA
| | | | | |
Collapse
|
41
|
Ziemer CJ, Kerr BJ, Weber TE, Arcidiacono S, Morrison M, Ragauskas A. Effects of feeding fiber-fermenting bacteria to pigs on nutrient digestion, fecal output, and plasma energy metabolites. J Anim Sci 2013; 90:4020-7. [PMID: 23148303 DOI: 10.2527/jas.2012-5193] [Citation(s) in RCA: 14] [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: 11/13/2022] Open
Abstract
Inclusion of feedstuffs with higher plant cell wall (fiber) content in swine diets has increased in recent years due to greater availability and lower cost, especially coproduct feeds, such as corn distillers dried grains with soluble (DDGS). Limitations of feeding higher fiber diets include increased fecal output, which can exceed manure storage volumes, and decreased energy density, which can decrease growth performance; dietary treatments that ameliorate these limitations would benefit pork producers. Grower pigs (n = 48; 61.1 kg initial BW) were used to establish the effects of supplementation of fiber-fermenting bacteria in a 2 × 4 factorial, consisting of 2 diets (standard and high fiber) and 4 bacterial treatments (A, no bacteria; and B, C, and D bacterial supplements). Increased fiber came from inclusion of soybean hulls (10%) and corn DDGS (20%) in the diet. The 3 bacterial supplements (all Bacteroides strains) were isolated from fecal enrichment cultures and selected for their fiber-fermenting capacity. The high fiber diet increased fecal output, blood cholesterol, and triglyceride concentrations, and digestibility of NDF, ADF, and S; CP digestibility decreased (P ≤ 0.10). The improved fiber digestibility and altered energy status of pigs fed the high fiber diet was primarily due to fermentation of soybean hulls, resulting in increased short-chain fatty acid production and absorption, and decreased dietary starch content. Overall, pigs fed the bacterial treatments had only increased blood cholesterol concentrations (P = 0.10). When individual bacterial treatments were compared, pigs fed Bacteria B had decreased fecal output (P ≤ 0.10) and both blood glucose and cholesterol concentrations were increased (P ≤ 0.10) compared with the other 3 treatments, indicating an improved energy status. Pigs fed Bacteria B increased both CP and ADF (P ≤ 0.10), and tended (P = 0.16) to have increased NDF digestibilities compared with pigs fed no bacteria (Treatment A), whereas pigs fed the other 2 bacterial treatments did not differ from pigs fed Bacteria B for nutrient digestibility. Both had similar fecal outputs to pigs fed no bacteria. This is the first report of reduction in fecal output and increased fiber digestibility with pigs fed live bacteria. Successful application of this bacterial treatment could result in improved pig performance and decreased manure volumes, both of which would improve profitability of producers.
Collapse
Affiliation(s)
- C J Ziemer
- USDA-ARS, National Laboratory for Agriculture and the Environment, Ames, IA 50011-3310, USA.
| | | | | | | | | | | |
Collapse
|
42
|
Bath C, Morrison M, Ross EM, Hayes BJ, Cocks BG. The symbiotic rumen microbiome and cattle performance: a brief review. Anim Prod Sci 2013. [DOI: 10.1071/an12369] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
The rumen of the dairy cow contains a rich and diverse collection of microbes that during feed digestion produce significant quantities of methane gas and ammonia, both of which contribute to greenhouse gas emissions. Strategies to redirect rumen carbon and nitrogen metabolism away from these products provide opportunities for significant productivity improvements in livestock systems not only by improving nutrient retention, but also by reducing greenhouse gas emissions. In order to develop these strategies, a greater knowledge of the diversity of the microbes within their rumen and their genomic capability is required. Many have used several techniques to study the rumen microbes, and the technology continues to improve. Among them include researchers at the Department of Primary Industries Victoria (DPI Vic) and the Dairy Futures Cooperative Research Centre (CRC) who are addressing the issue of regulation of methane emissions in dairy cattle, while scientists in Queensland and New South Wales, as part of the most recent Beef CRC program, focus on beef cattle. In this brief review, we examine how the techniques used in rumen microbial ecology have changed, and how technology improvements continue to allow us to examine the rumen microbiota of cattle and other ruminants, so as to better understand and possibly select animals with superior traits, leading to improvements in feed efficiency, methane emissions and nitrogen retention.
Collapse
|
43
|
Bonello B, Kempny A, Uebing A, Li W, Kilner P, Diller G, Pennell D, Ernst S, Shore D, Babu-Narayan S, Bonanad Lozano C, Monmeneu J, Lopez-Lereu M, Chaustre F, Sanchis J, Nunez J, Chorro F, Bodi V, Vancraeynest D, Roelants V, Hanin F, Morrison M, Pasquet A, Gerber B, Bol V, Bol A, Bouzin C, Vanoverschelde J, Marzluf BA, Bonderman D, Pfaffenberger S, Ringelspacher E, Huelsmann M, Tufaro C, Lang I, Maurer G, Pacher R, Mascherbauer J, Hrynchyshyn N, Azarine A, Samadi A, Perdrix L, Khedim-Touati R, Mousseaux E, Diebold B. Oral Abstract Sessions * Multimodality Imaging - MRI CT and Nuclear Cardiology Abstract Session: Nuclear cardiology. Eur Heart J Cardiovasc Imaging 2012. [DOI: 10.1093/ehjci/jes252] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
|
44
|
Morrison M, Prentice KM, Anderson LJ, Mcdowall K, Hopkins E, Macleod-Kennedy L, Anderson JK, Beverland I, Sneddon S, Anderson K. P246 Respiratory patient activity, physical exercise in normal individuals, and telehealth prediction of air pollution. Thorax 2012. [DOI: 10.1136/thoraxjnl-2012-202678.307] [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]
|
45
|
Oh J, Kutas GJ, Davey P, Morrison M, Perry JR. Aplastic anemia with concurrent temozolomide treatment in a patient with glioblastoma multiforme. ACTA ACUST UNITED AC 2011; 17:124-6. [PMID: 20697524 DOI: 10.3747/co.v17i4.526] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [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: 11/15/2022]
Abstract
Temozolomide (TMZ) is an oral alkylating agent used during concurrent and adjuvant chemotherapy for newly diagnosed glioblastoma multiforme. Temozolomide is generally well tolerated and improves survival; however, severe adverse events have occasionally been reported. Here, we report the case of a patient who developed aplastic anemia with related complications in the setting of concurrent TMZ treatment with radiotherapy. This case illustrates that aplastic anemia is a rare side effect of TMZ that can occur relatively early in the course of concurrent chemotherapy, and underscores the importance of clinician awareness of this potentially devastating side effect.
Collapse
Affiliation(s)
- J Oh
- Division of Neurology, Department of Medicine, Odette Cancer Centre, Sunnybrook Health Sciences Centre, Toronto, ON.
| | | | | | | | | |
Collapse
|
46
|
Pope PB, Smith W, Denman SE, Tringe SG, Barry K, Hugenholtz P, McSweeney CS, McHardy AC, Morrison M. Isolation of Succinivibrionaceae Implicated in Low Methane Emissions from Tammar Wallabies. Science 2011; 333:646-8. [DOI: 10.1126/science.1205760] [Citation(s) in RCA: 126] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
|
47
|
Bahadur G, Morrison M, Machin L. Beyond the 'embryo question': human embryonic stem cell ethics in the context of biomaterial donation in the UK. Reprod Biomed Online 2011; 21:868-74. [PMID: 21112540 DOI: 10.1016/j.rbmo.2010.10.001] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2010] [Revised: 09/30/2010] [Accepted: 10/05/2010] [Indexed: 11/30/2022]
Abstract
Discussion about the ethics of human embryonic stem cell (ESC) research in the UK tends to be dominated by the divisive and potentially intractable issue of the moral status of the embryo. This can have the effect of silencing or marginalizing other concerns, especially in the context of public engagement with science in this field. One such area of potential public concern is the donation of oocytes and embryos to stem cell research. Contemporary research on the views of donors and potential donors about a wide range of biomaterials, from solid organs to gametes and bone marrow, is reviewed and used to illustrate the range and types of ethical concerns articulated by this important group of stakeholders. Attitudes to donation are found to vary according to the type of tissue being donated or collected, the purpose for which donation is being sought and the nature of the recipient of the donation. Pertinently, attitudes towards donating oocytes are found to differ in some respects from donation of embryos or fetal tissue. The implications of these findings for ensuring ethically robust informed consent and publicly acceptable sourcing of human biomaterials for stem cell research are then considered.
Collapse
Affiliation(s)
- G Bahadur
- Fertility Unit, North Middlesex University Hospital NHS Trust, Stirling Way, London N18 1QX, UK.
| | | | | |
Collapse
|
48
|
Hancock G, Morrison M. The 193 nm photolysis of NO2: NO(ν) vibrational distribution, O(1D) quantum yield and emission from vibrationally excited NO2. Mol Phys 2011. [DOI: 10.1080/00268970500086161] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- G. Hancock
- a Physical and Theoretical Chemistry Laboratory , Oxford University , Oxford , OX1 3QZ
| | - M. Morrison
- a Physical and Theoretical Chemistry Laboratory , Oxford University , Oxford , OX1 3QZ
| |
Collapse
|
49
|
Lindborg M, Cortez E, Höidén-Guthenberg I, Gunneriusson E, von Hage E, Syud F, Morrison M, Abrahmsén L, Herne N, Pietras K, Frejd FY. Engineered high-affinity affibody molecules targeting platelet-derived growth factor receptor β in vivo. J Mol Biol 2011; 407:298-315. [PMID: 21277312 DOI: 10.1016/j.jmb.2011.01.033] [Citation(s) in RCA: 59] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2010] [Revised: 11/20/2010] [Accepted: 01/14/2011] [Indexed: 12/13/2022]
Abstract
Platelet-derived growth factor receptor (PDGFR) β is a marker of stromal pericytes and fibroblasts and represents an interesting target for both diagnosis and therapy of solid tumors. A receptor-specific imaging agent would be a useful tool for further understanding the prognostic role of this receptor in vivo. Affibody molecules constitute a class of very small binding proteins that are highly suited for in vivo imaging applications and that can be selected to specifically recognize a desired target protein. Here we describe the isolation of PDGFRβ-specific Affibody molecules with subnanomolar affinity. First-generation Affibody molecules were generated from a large naive library using phage display selection. Subsequently, sequences from binders having a desired selectivity profile and competing with the natural ligand for binding were used in the design of an affinity maturation library, which was created using a single partially randomized oligonucleotide. From this second-generation library, Affibody molecules with a 10-fold improvement in affinity (K(d)=0.4-0.5 nM) for human PDGFRβ and a 4-fold improvement in affinity (K(d)=6-7 nM) for murine PDGFRβ were isolated and characterized. Complete reversible folding after heating to 90 °C, as demonstrated by circular dichroism analysis, supports tolerance to labeling conditions for molecular imaging. The binders were highly specific, as verified by dot blot showing staining reactivity only with human and murine PDGFRβ, but not with human PDGFRα, or a panel of control proteins including 16 abundant human serum proteins. The final binder recognized the native conformation of PDGFRβ expressed in murine NIH-3T3 fibroblasts and human AU565 cells, and inhibited ligand-induced receptor phosphorylation in PDGFRβ-transfected porcine aortic endothelial cells. The PDGFRβ-specific Affibody molecule also accumulated around tumoral blood vessels in a model of spontaneous insulinoma, confirming a potential for in vivo targeting.
Collapse
|
50
|
Mondot S, Kang S, Furet JP, Aguirre de Carcer D, McSweeney C, Morrison M, Marteau P, Doré J, Leclerc M. Highlighting new phylogenetic specificities of Crohn's disease microbiota. Inflamm Bowel Dis 2011; 17:185-92. [PMID: 20722058 DOI: 10.1002/ibd.21436] [Citation(s) in RCA: 200] [Impact Index Per Article: 15.4] [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: 06/22/2010] [Accepted: 06/23/2010] [Indexed: 12/13/2022]
Abstract
BACKGROUND Recent studies suggest that gastrointestinal (GI) microbes play a part in the pathogenesis of Crohn's disease (CD). METHODS Fecal samples were collected from 16 healthy individuals and 16 CD patients (age- and sex-matched). The DNA extracted from these samples were subjected to two different methods of microbiome analysis. Specific bacterial groups were quantified by real-time polymerase chain reaction (PCR) methods using primers designed using a high-throughput in-house bioinformatics pipeline. The same DNA extracts were also used to produce fluorescently labeled cRNA amplicons to interrogate a custom-designed phylogenetic microarray for intestinal bacteria. RESULTS Even though the intersubject variability was high, differences in the fecal microbiomes of healthy and CD patients were detected. Faecalibacterium prausnitzii and Escherichia coli were more represented in healthy and ileal CD patients, respectively. Additionally, probes specific for Ruminococcus bromii, Oscillibacter valericigenes, Bifidobacterium bifidum, and Eubacterium rectale produced stronger hybridization signals with the DNA samples from healthy subjects. Conversely, species overrepresented in CD patients were E. coli, Enterococcus faecium, and species from the Proteobacteria not normally found in the healthy human GI tract. Furthermore, we detected "healthy specific" molecular species or operational taxonomic units (OTUs) that are not closely related to any known species (Faecalibacterium, Subdoligranulum, and Oscillospora species), indicating that the phylogenetic dysbiosis is broader than at strain or species level. CONCLUSIONS These two techniques of microbiome analysis provided a statistically robust new picture of the dysbiosis in fecal microbiota from ileal CD patients. Specifically, we identified a set of six species discriminant for CD, which provides a preliminary diagnostic tool.
Collapse
Affiliation(s)
- S Mondot
- UMR1319 MICALIS, INRA, Domaine de Vilvert, 78350 Jouy en Josas, France.
| | | | | | | | | | | | | | | | | |
Collapse
|