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Abstract
BACKGROUND The pathology underlying cognitive changes in people with Parkinson's disease (PD) is not well understood. In healthy older adults, gut microbiome composition has been associated with cognitive function. In people with PD, preliminary evidence suggests that cortical spreading of abnormal alpha-synuclein aggregates may be associated with cognitive impairment. As changes in the gut have been linked to PD onset and associated Lewy body pathology, an investigation of the gut microbiome and cognition in PD is warranted. OBJECTIVE To synthesise existing evidence on the relationship between the gut microbiome and cognitive function in PD. METHODS A systematic review was conducted to search for peer-reviewed articles and grey literature published to July 2021 across seven electronic databases (MEDLINE, EMBASE, PsycINFO, Scopus, Cochrane Library, ProQuest, and ProQuest Dissertations and Theses). English language articles reporting the relationship between cognition and the gut microbiome in human participants with PD were considered for inclusion. Results were qualitatively synthesised and evidence quality was assessed using the QualSyst tool for quantitative studies. RESULTS Five cross-sectional studies reporting the association between the gut microbiome and cognition in 395 participants with PD were included. Studies provided preliminary evidence of a relationship between cognition and gut microbiota within the Bacteroidetes and Firmicutes phyla, however, associations with specific genera were inconsistent across studies. CONCLUSIONS Some species of short-chain fatty acid-producing bacteria (e.g. acetate, butyrate, and propionate producers) appear to be reduced in participants with PD with cognitive impairment. More research with larger samples and more consistent methodology is needed to substantiate these findings.
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Affiliation(s)
- Hayley Grant
- Discipline of Psychology, School of Population Health, Curtin University, Bentley, Australia
| | - Ryan Anderton
- Institute for Health Research, The University of Notre Dame Australia, Fremantle, Australia
| | - Natalie Gasson
- Discipline of Psychology, School of Population Health, Curtin University, Bentley, Australia
| | - Blake J Lawrence
- Discipline of Psychology, School of Population Health, Curtin University, Bentley, Australia
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Jeyadevan A, Bakeberg M, Byrnes M, Kenna J, McGregor S, Ghosh S, Horne MK, Stell R, Evans T, Mastaglia FL, Anderton R. Quality of life implications for elevated trait impulsivity in people with Parkinson's disease. Qual Life Res 2023; 32:1143-1150. [PMID: 36637657 PMCID: PMC10063484 DOI: 10.1007/s11136-022-03321-w] [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] [Accepted: 12/05/2022] [Indexed: 01/14/2023]
Abstract
BACKGROUND Several non-motor features of Parkinson's disease (PD) are known to adversely affect patient health-related quality of life (HRQL). However, the specific impact of neuropsychiatric complications, such as impulsive behaviour, is yet to be elucidated. OBJECTIVES The present cross-sectional, observational study aimed to investigate the effects of heightened trait impulsivity on HRQL in individuals with PD. METHODS A total of 322 people with idiopathic PD were sequentially recruited from Movement Disorder clinics across Australia. Trait impulsivity in patients was determined by Barratt's Impulsiveness Scale Version 11 (BIS-11), and grouped into tertiles (low, medium, and high). Patient HRQL was determined by the 39-item Parkinson's Disease Questionnaire (PDQ-39), complemented by the Cambridge Behavioural Inventory-Revised (CBI-R) indicating caregivers' perception of patient HRQL. RESULTS When total BIS-11 scores were grouped into tertiles, patient perceived and caregiver-perceived HRQL were 1.7-fold (p < .001) and 2.2-fold (p < .001) worse in the high BIS-11 group when compared to patients in the low group. Univariate analysis revealed significant associations between second-order attentional (p < .001) and non-planning (p < .001) impulsivity domains with PDQ-39 scores. When controlling for confounding demographic and clinical variables, a multivariate linear regression model revealed second-order attentional impulsivity was independently predictive of poor patient perceived HRQL (p < .001). CONCLUSION These findings suggest that increasing trait impulsivity is significantly associated with patient perceived HRQL in PD. Improved knowledge and recognition of subclinical impulsivity may guide clinicians' treatment and reduce disease burden for patients experiencing PD symptoms.
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Affiliation(s)
- Ashani Jeyadevan
- Faculty of Medicine, School of Nursing and Midwifery, and Health Sciences, University of Notre Dame Australia, Fremantle, WA, Australia
| | - Megan Bakeberg
- Faculty of Medicine, School of Nursing and Midwifery, and Health Sciences, University of Notre Dame Australia, Fremantle, WA, Australia
- Centre for Neuromuscular and Neurological Disorders, University of Western Australia, Nedlands, WA, Australia
| | - Michelle Byrnes
- Centre for Neuromuscular and Neurological Disorders, University of Western Australia, Nedlands, WA, Australia
| | - Jade Kenna
- Faculty of Medicine, School of Nursing and Midwifery, and Health Sciences, University of Notre Dame Australia, Fremantle, WA, Australia
- Centre for Neuromuscular and Neurological Disorders, University of Western Australia, Nedlands, WA, Australia
- Perron Institute for Neurological and Translational Sciences Nedlands, Nedlands, WA, Australia
| | - Sarah McGregor
- Centre for Clinical Neurosciences and Neurological Research, St Vincent's Hospital Melbourne, Fitzroy, VIC, Australia
| | - Soumya Ghosh
- Centre for Neuromuscular and Neurological Disorders, University of Western Australia, Nedlands, WA, Australia
- Perron Institute for Neurological and Translational Sciences Nedlands, Nedlands, WA, Australia
| | - Malcom K Horne
- Centre for Clinical Neurosciences and Neurological Research, St Vincent's Hospital Melbourne, Fitzroy, VIC, Australia
- Florey Institute for Neuroscience and Mental Health, University of Melbourne, Parkville, VIC, Australia
| | - Rick Stell
- Centre for Neuromuscular and Neurological Disorders, University of Western Australia, Nedlands, WA, Australia
- Perron Institute for Neurological and Translational Sciences Nedlands, Nedlands, WA, Australia
| | - Tess Evans
- Faculty of Medicine, School of Nursing and Midwifery, and Health Sciences, University of Notre Dame Australia, Fremantle, WA, Australia
| | - Frank L Mastaglia
- Centre for Neuromuscular and Neurological Disorders, University of Western Australia, Nedlands, WA, Australia
- Perron Institute for Neurological and Translational Sciences Nedlands, Nedlands, WA, Australia
| | - Ryan Anderton
- Faculty of Medicine, School of Nursing and Midwifery, and Health Sciences, University of Notre Dame Australia, Fremantle, WA, Australia.
- Centre for Neuromuscular and Neurological Disorders, University of Western Australia, Nedlands, WA, Australia.
- Institute of Health Research, University of Notre Dame Australia, Fremantle, WA, Australia.
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Evans T, Ali U, Anderton R, Raby E, Manning L, Litton E. Lower gut dysbiosis and mortality in acute critical illness: a systematic review and meta-analysis. Intensive Care Med Exp 2023; 11:6. [PMID: 36732439 PMCID: PMC9895325 DOI: 10.1186/s40635-022-00486-z] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2022] [Accepted: 12/17/2022] [Indexed: 02/04/2023] Open
Abstract
BACKGROUND The human gastrointestinal tract harbours a complex multi-kingdom community known as the microbiome. Dysbiosis refers to its disruption and is reportedly extreme in acute critical illness yet its clinical implications are unresolved. The review systematically evaluates the association between gut dysbiosis and clinical outcomes of patients early in critical illness. METHODS Following PRISMA guidelines, a prospectively registered search was undertaken of MEDLINE and Cochrane databases for observational studies undertaking metagenomic sequencing of the lower gastrointestinal tract of critically ill adults and children within 72 h of admission. Eligible studies reported an alpha diversity metric and one or more of the primary outcome, in-hospital mortality, or secondary clinical outcomes. After aggregate data were requested, meta-analysis was performed for four studies with in-hospital mortality stratified to high or low Shannon index. RESULTS The search identified 26 studies for systematic review and 4 had suitable data for meta-analysis. No effect of alpha diversity was seen on in-hospital mortality after binary transformation of Shannon index (odds ratio 0.52, CI 0.12-4.98, I2 = 0.64) however certainty of evidence is low. Pathogen dominance and commensal depletion were each more frequently associated with in-hospital mortality, adverse clinical and ecological sequelae, particularly overabundance of Enterococcus. CONCLUSIONS There is a paucity of large, rigorous observational studies in this population. Globally, alpha diversity was dynamically reduced in early ICU admission in adults and children and was not associated with in-hospital mortality. The abundance of taxa such as Enterococcus spp. appears to offer greater predictive capacity for important clinical and ecological outcomes.
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Affiliation(s)
- Tess Evans
- grid.459958.c0000 0004 4680 1997Intensive Care Unit, Fiona Stanley Hospital, South Metropolitan Health Service, WA Health, Perth, Australia ,grid.1012.20000 0004 1936 7910School of Medicine, University of Western Australia, Nedlands, Australia
| | - Umar Ali
- grid.1012.20000 0004 1936 7910School of Medicine, University of Western Australia, Nedlands, Australia
| | - Ryan Anderton
- grid.266886.40000 0004 0402 6494School of Health Sciences, University of Notre Dame Australia (Fremantle), Fremantle, Australia
| | - Edward Raby
- grid.459958.c0000 0004 4680 1997Department of Infectious Diseases, Fiona Stanley Hospital, South Metropolitan Health Service, WA Health, Perth, Australia ,grid.1012.20000 0004 1936 7910School of Medicine, University of Western Australia, Nedlands, Australia
| | - Laurens Manning
- grid.459958.c0000 0004 4680 1997Department of Infectious Diseases, Fiona Stanley Hospital, South Metropolitan Health Service, WA Health, Perth, Australia ,grid.1012.20000 0004 1936 7910School of Medicine, University of Western Australia, Nedlands, Australia
| | - Edward Litton
- grid.459958.c0000 0004 4680 1997Intensive Care Unit, Fiona Stanley Hospital, South Metropolitan Health Service, WA Health, Perth, Australia ,grid.1012.20000 0004 1936 7910School of Medicine, University of Western Australia, Nedlands, Australia
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Seewoo BJ, Chua EG, Arena-Foster Y, Hennessy LA, Gorecki AM, Anderton R, Rodger J. Changes in the rodent gut microbiome following chronic restraint stress and low-intensity rTMS. Neurobiol Stress 2022; 17:100430. [PMID: 35146078 PMCID: PMC8819474 DOI: 10.1016/j.ynstr.2022.100430] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2021] [Revised: 01/11/2022] [Accepted: 01/17/2022] [Indexed: 12/19/2022] Open
Affiliation(s)
- Bhedita J. Seewoo
- School of Biological Sciences, The University of Western Australia, 35 Stirling Highway, Crawley, WA, 6009, Australia
- Perron Institute for Neurological and Translational Science, 8 Verdun St, Nedlands, WA, 6009, Australia
- Centre for Microscopy, Characterisation & Analysis, Research Infrastructure Centres, The University of Western Australia, 6 Verdun St, Nedlands, WA, 6009, Australia
| | - Eng Guan Chua
- The Marshall Centre for Infectious Diseases Research and Training, The University of Western Australia, 35 Stirling Highway, Crawley, WA, 6009, Australia
| | - Yasmin Arena-Foster
- School of Biological Sciences, The University of Western Australia, 35 Stirling Highway, Crawley, WA, 6009, Australia
- Perron Institute for Neurological and Translational Science, 8 Verdun St, Nedlands, WA, 6009, Australia
| | - Lauren A. Hennessy
- School of Biological Sciences, The University of Western Australia, 35 Stirling Highway, Crawley, WA, 6009, Australia
- Perron Institute for Neurological and Translational Science, 8 Verdun St, Nedlands, WA, 6009, Australia
| | - Anastazja M. Gorecki
- School of Biological Sciences, The University of Western Australia, 35 Stirling Highway, Crawley, WA, 6009, Australia
- Perron Institute for Neurological and Translational Science, 8 Verdun St, Nedlands, WA, 6009, Australia
| | - Ryan Anderton
- Institute for Health Research and School of Health Sciences, University of Notre Dame Australia, 33 Phillimore Street, Fremantle, WA, Australia
| | - Jennifer Rodger
- School of Biological Sciences, The University of Western Australia, 35 Stirling Highway, Crawley, WA, 6009, Australia
- Perron Institute for Neurological and Translational Science, 8 Verdun St, Nedlands, WA, 6009, Australia
- Corresponding author. School of Biological Sciences, The University of Western Australia, 35 Stirling Highway, Crawley, WA, 6009, Australia.
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Affiliation(s)
- Ryan Anderton
- UK Civil Aviation Authority, Gatwick Airport South, Aviation House, Crawley, Gatwick, UK
| | - Bonnie Posselt
- Royal Air Force Centre of Aviation Medicine, RAF Henlow, Bedfordshire, UK
| | - Matthieu Komorowski
- Department of Surgery and Cancer, Faculty of Medicine, Imperial College London, London, UK
| | - Peter Hodkinson
- Royal Air Force Centre of Aviation Medicine, RAF Henlow, Bedfordshire, UK
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Manning J, Anderton R, Washington S. Women's waists and the sex ratio of their progeny: evolutionary aspects of the ideal female body shape. J Hum Evol 1996. [DOI: 10.1006/jhev.1996.0047] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Eggleston PA, Rosenthal RR, Anderson SA, Anderton R, Bierman CW, Bleecker ER, Chai H, Cropp GJ, Johnson JD, Konig P, Morse J, Smith LJ, Summers RJ, Trautlein JJ. Guidelines for the methodology of exercise challenge testing of asthmatics. Study Group on Exercise Challenge, Bronchoprovocation Committee, American Academy of Allergy. J Allergy Clin Immunol 1979; 64:642-5. [PMID: 512260 DOI: 10.1016/0091-6749(79)90028-9] [Citation(s) in RCA: 91] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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