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Ledger EL, Smith DJ, Teh JJ, Wood ME, Whibley PE, Morrison M, Goldberg JB, Reid DW, Wells TJ. Impact of CFTR Modulation on Pseudomonas aeruginosa Infection in People With Cystic Fibrosis. J Infect Dis 2024:jiae051. [PMID: 38442240 DOI: 10.1093/infdis/jiae051] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2023] [Accepted: 01/29/2024] [Indexed: 03/07/2024] Open
Abstract
BACKGROUND Pseudomonas aeruginosa is a multidrug-resistant pathogen causing recalcitrant pulmonary infections in people with cystic fibrosis (pwCF). Cystic fibrosis transmembrane conductance regulator (CFTR) modulators have been developed that partially correct the defective chloride channel driving disease. Despite the many clinical benefits, studies in adults have demonstrated that while P. aeruginosa sputum load decreases, chronic infection persists. Here, we investigate how P. aeruginosa in pwCF may change in the altered lung environment after CFTR modulation. METHODS P. aeruginosa strains (n = 105) were isolated from the sputum of 11 chronically colonized pwCF at baseline and up to 21 months posttreatment with elexacaftor-tezacaftor-ivacaftor or tezacaftor-ivacaftor. Phenotypic characterization and comparative genomics were performed. RESULTS Clonal lineages of P. aeruginosa persisted after therapy, with no evidence of displacement by alternative strains. We identified commonly mutated genes among patient isolates that may be positively selected for in the CFTR-modulated lung. However, classic chronic P. aeruginosa phenotypes such as mucoid morphology were sustained, and isolates remained just as resistant to clinically relevant antibiotics. CONCLUSIONS Despite the clinical benefits of CFTR modulators, clonal lineages of P. aeruginosa persist that may prove just as difficult to manage in the future, especially in pwCF with advanced lung disease.
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Affiliation(s)
- Emma L Ledger
- Frazer Institute, Faculty of Medicine, The University of Queensland, Brisbane, Australia
| | - Daniel J Smith
- Northside Clinical Unit, The University of Queensland, Brisbane, Australia
- Adult Cystic Fibrosis Centre, The Prince Charles Hospital, Brisbane, Australia
| | - Jing Jie Teh
- Frazer Institute, Faculty of Medicine, The University of Queensland, Brisbane, Australia
| | - Michelle E Wood
- Adult Cystic Fibrosis Centre, The Prince Charles Hospital, Brisbane, Australia
| | - Page E Whibley
- Adult Cystic Fibrosis Centre, The Prince Charles Hospital, Brisbane, Australia
| | - Mark Morrison
- Frazer Institute, Faculty of Medicine, The University of Queensland, Brisbane, Australia
- Australian Infectious Diseases Research Centre, Brisbane, Australia
| | - Joanna B Goldberg
- Department of Pediatrics, Division of Pulmonary, Asthma, Cystic Fibrosis, and Sleep, Emory University School of Medicine, Atlanta, Georgia, USA
| | - David W Reid
- Northside Clinical Unit, The University of Queensland, Brisbane, Australia
- Australian Infectious Diseases Research Centre, Brisbane, Australia
- QIMR Berghofer Medical Research Institute, Brisbane, Australia
| | - Timothy J Wells
- Frazer Institute, Faculty of Medicine, The University of Queensland, Brisbane, Australia
- Australian Infectious Diseases Research Centre, Brisbane, Australia
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2
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Chan S, Wood DLA, Hawley CM, Campbell KL, Campbell SB, Cao C, Francis RS, Hale R, Isbel NM, Pascoe EM, Johnson DW, Morrison M. Characteristics of the gastrointestinal microbiota following prebiotic supplementation in acute kidney transplant recipients: Results from a randomised controlled trial. Clin Transplant 2024; 38:e15175. [PMID: 37902121 DOI: 10.1111/ctr.15175] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2023] [Revised: 10/14/2023] [Accepted: 10/19/2023] [Indexed: 10/31/2023]
Affiliation(s)
- Samuel Chan
- Australasian Kidney Trials Network, The University of Queensland, Brisbane, Queensland, Australia
| | - David LA Wood
- Microbia Life Sciences, Brisbane, Queensland, Australia
| | - Carmel M Hawley
- Australasian Kidney Trials Network, The University of Queensland, Brisbane, Queensland, Australia
- Department of Kidney and Transplant Services, Princess Alexandra Hospital, Brisbane, Queensland, Australia
- Translational Research Institute, Brisbane, Queensland, Australia
| | - Katrina L Campbell
- Department of Kidney and Transplant Services, Princess Alexandra Hospital, Brisbane, Queensland, Australia
| | - Scott B Campbell
- Australasian Kidney Trials Network, The University of Queensland, Brisbane, Queensland, Australia
- Department of Kidney and Transplant Services, Princess Alexandra Hospital, Brisbane, Queensland, Australia
| | - Christopher Cao
- Department of Kidney and Transplant Services, Princess Alexandra Hospital, Brisbane, Queensland, Australia
| | - Ross S Francis
- Australasian Kidney Trials Network, The University of Queensland, Brisbane, Queensland, Australia
- Department of Kidney and Transplant Services, Princess Alexandra Hospital, Brisbane, Queensland, Australia
| | - Rachael Hale
- Department of Kidney and Transplant Services, Princess Alexandra Hospital, Brisbane, Queensland, Australia
| | - Nicole M Isbel
- Australasian Kidney Trials Network, The University of Queensland, Brisbane, Queensland, Australia
- Department of Kidney and Transplant Services, Princess Alexandra Hospital, Brisbane, Queensland, Australia
- Translational Research Institute, Brisbane, Queensland, Australia
| | - Elaine M Pascoe
- Department of Kidney and Transplant Services, Princess Alexandra Hospital, Brisbane, Queensland, Australia
| | - David W Johnson
- Australasian Kidney Trials Network, The University of Queensland, Brisbane, Queensland, Australia
- Department of Kidney and Transplant Services, Princess Alexandra Hospital, Brisbane, Queensland, Australia
- Translational Research Institute, Brisbane, Queensland, Australia
| | - Mark Morrison
- Faculty of Medicine, University of Queensland Frazer Institute, Translational Research Institute, Woolloongabba, Queensland, Australia
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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.
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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
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Beck ES, Mullins WA, Dos Santos Silva J, Filippini S, Parvathaneni P, Maranzano J, Morrison M, Suto DJ, Donnay C, Dieckhaus H, Luciano NJ, Sharma K, Gaitán MI, Liu J, de Zwart JA, van Gelderen P, Cortese I, Narayanan S, Duyn JH, Nair G, Sati P, Reich DS. Cortical lesions uniquely predict motor disability accrual and form rarely in the absence of new white matter lesions in multiple sclerosis. medRxiv 2023:2023.09.22.23295974. [PMID: 37886541 PMCID: PMC10602044 DOI: 10.1101/2023.09.22.23295974] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/28/2023]
Abstract
Background and objectives Cortical lesions (CL) are common in multiple sclerosis (MS) and associate with disability and progressive disease. We asked whether CL continue to form in people with stable white matter lesions (WML) and whether the association of CL with worsening disability relates to pre-existing or new CL. Methods A cohort of adults with MS were evaluated annually with 7 tesla (T) brain magnetic resonance imaging (MRI) and 3T brain and spine MRI for 2 years, and clinical assessments for 3 years. CL were identified on 7T images at each timepoint. WML and brain tissue segmentation were performed using 3T images at baseline and year 2. Results 59 adults with MS had ≥1 7T follow-up visit (mean follow-up time 2±0.5 years). 9 had "active" relapsing-remitting MS (RRMS), defined as new WML in the year prior to enrollment. Of the remaining 50, 33 had "stable" RRMS, 14 secondary progressive MS (SPMS), and 3 primary progressive MS. 16 total new CL formed in the active RRMS group (median 1, range 0-10), 7 in the stable RRMS group (median 0, range 0-5), and 4 in the progressive MS group (median 0, range 0-1) (p=0.006, stable RR vs PMS p=0.88). New CL were not associated with greater change in any individual disability measure or in a composite measure of disability worsening (worsening Expanded Disability Status Scale or 9-hole peg test or 25-foot timed walk). Baseline CL volume was higher in people with worsening disability (median 1010μl, range 13-9888 vs median 267μl, range 0-3539, p=0.001, adjusted for age and sex) and in individuals with RRMS who subsequently transitioned to SPMS (median 2183μl, range 270-9888 vs median 321μl, range 0-6392 in those who remained RRMS, p=0.01, adjusted for age and sex). Baseline WML volume was not associated with worsening disability or transition from RRMS to SPMS. Discussion CL formation is rare in people with stable WML, even in those with worsening disability. CL but not WML burden predicts future worsening of disability, suggesting that the relationship between CL and disability progression is related to long-term effects of lesions that form in the earlier stages of disease, rather than to ongoing lesion formation.
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Affiliation(s)
- Erin S Beck
- National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD, USA
- Department of Neurology, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - W Andrew Mullins
- National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD, USA
| | | | - Stefano Filippini
- National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD, USA
- Department of Neurosciences, Drug, and Child Health, University of Florence, Florence, Italy
| | - Prasanna Parvathaneni
- National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD, USA
| | - Josefina Maranzano
- McConnell Brain Imaging Centre, Department of Neurology and Neurosurgery, Montreal Neurological Institute and Hospital, McGill University, Montreal, QC, Canada
- Department of Anatomy, University of Quebec, Trois-Rivieres, QC, Canada
| | - Mark Morrison
- National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD, USA
| | - Daniel J Suto
- National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD, USA
| | - Corinne Donnay
- National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD, USA
| | - Henry Dieckhaus
- National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD, USA
| | - Nicholas J Luciano
- National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD, USA
| | - Kanika Sharma
- National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD, USA
| | - María Ines Gaitán
- National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD, USA
| | - Jiaen Liu
- National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD, USA
- Advanced Imaging Research Center and Department of Radiology, University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Jacco A de Zwart
- National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD, USA
| | - Peter van Gelderen
- National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD, USA
| | - Irene Cortese
- National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD, USA
| | - Sridar Narayanan
- McConnell Brain Imaging Centre, Department of Neurology and Neurosurgery, Montreal Neurological Institute and Hospital, McGill University, Montreal, QC, Canada
| | - Jeff H Duyn
- National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD, USA
| | - Govind Nair
- Department of Neurology, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Pascal Sati
- National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD, USA
- Department of Neurology, Cedars-Sinai Medical Center, Los Angeles, CA, USA
| | - Daniel S Reich
- National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD, USA
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Abstract
Methanogenic archaea (methanogens) represent a diverse group of microorganisms that inhabit various environmental and host-associated microbiomes. These organisms play an essential role in global carbon cycling given their ability to produce methane, a potent greenhouse gas, as a by-product of their energy production. Recent advances in culture-independent and -dependent studies have highlighted an increased prevalence of methanogens in the host-associated microbiome of diverse animal species. Moreover, there is increasing evidence that methanogens, and/or the methane they produce, may play a substantial role in human health and disease. This review addresses the expanding host-range and the emerging view of host-specific adaptations in methanogen biology and ecology, and the implications for host health and disease.
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Affiliation(s)
- James G. Volmer
- Centre for Microbiome Research, School of Biomedical Sciences, Queensland University of Technology (QUT), Translational Research Institute, Woolloongabba, QLD, Australia
| | - Harley McRae
- Faculty of Medicine, University of Queensland Frazer Institute, Translational Research Institute, Woolloongabba, QLD, Australia
| | - Mark Morrison
- Faculty of Medicine, University of Queensland Frazer Institute, Translational Research Institute, Woolloongabba, QLD, Australia
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6
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Shah A, Pakeerathan V, Jones MP, Kashyap PC, Virgo K, Fairlie T, Morrison M, Ghoshal UC, Holtmann GJ. Small Intestinal Bacterial Overgrowth Complicating Gastrointestinal Manifestations of Systemic Sclerosis: A Systematic Review and Meta-analysis. J Neurogastroenterol Motil 2023; 29:132-144. [PMID: 37019859 PMCID: PMC10083111 DOI: 10.5056/jnm22168] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/04/2022] [Revised: 12/12/2022] [Accepted: 01/25/2023] [Indexed: 04/07/2023] Open
Abstract
Background/Aims Systemic sclerosis (SSc) often is complicated by small intestinal bacterial overgrowth (SIBO). A systematic review and meta-analysis thus examined the prevalence of SIBO in SSc (SSc-subtypes), identify risk factors for SIBO in SSc and the effects of concomitant SIBO on gastrointestinal symptoms in SSc. Methods We searched electronic databases until January-2022 for studies providing prevalence rates of SIBO in SSc. The prevalence rates, odds ratio (OR) and 95% confidence intervals (CI) of SIBO in SSc and controls were calculated. Results The final dataset comprised 28 studies with 1112 SSc-patients and 335 controls. SIBO prevalence in SSc-patients was 39.9% (95% CI, 33.1-47.1; P = 0.006), with considerable heterogeneity, (I2 = 76.00%, P < 0.001). As compared to controls, there was a 10-fold increased SIBO prevalence in SSc-patients (OR, 9.6; 95% CI, 5.6-16.5; P < 0.001). The prevalence of SIBO was not different in limited cutaneous SSc as compared to diffuse cutaneous SSc (OR, 1.01; 95% CI, 0.46-2.20; P = 0.978). Diarrhea (OR, 5.9; 95% CI, 2.9-16.0; P = 0.001) and the association between SIBO in SSc and proton pump inhibitor use (OR, 2.3; 95% CI, 0.8-6.4; P = 0.105) failed statistical significance. Rifaximin was significantly more effective as compared to rotating antibiotic in eradicating SIBO in SSc-patients (77.8% [95% CI, 64.4-87.9]) vs 44.8% [95% CI, 31.7-58.4]; P < 0.05). Conclusions There is a 10-fold increased prevalence of SIBO in SSc, with similar SIBO prevalence rates in SSc-subtypes. Antimicrobial therapy of SIBO-positive SSc-patients with diarrhea should be considered. However, the results must be interpreted with caution due to substantial unexplained heterogeneity in the prevalence studies, and the low sensitivity and specificity of the diagnostic tests suggesting that the reliability of the evidence may be low.
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Affiliation(s)
- Ayesha Shah
- Faculty of Medicine, The University of Queensland, Brisbane, QLD, Australia
- Department of Gastroenterology and Hepatology, Princess Alexandra Hospital, Woolloongabba, QLD, Australia
- Translational Research Institute, Woollongabba, QLD, Australia
| | - Veenaa Pakeerathan
- Faculty of Medicine, The University of Queensland, Brisbane, QLD, Australia
- Department of Gastroenterology and Hepatology, Princess Alexandra Hospital, Woolloongabba, QLD, Australia
| | - Michael P Jones
- School of Psychological Sciences, Macquarie University, Sydney, NSW, Australia
| | - Purna C Kashyap
- Division of Gastroenterology and Hepatology, Mayo Clinic, Rochester, MN, USA
- Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, MN, USA
| | - Kate Virgo
- Faculty of Medicine, The University of Queensland, Brisbane, QLD, Australia
- Department of Gastroenterology and Hepatology, Princess Alexandra Hospital, Woolloongabba, QLD, Australia
- Translational Research Institute, Woollongabba, QLD, Australia
| | - Thomas Fairlie
- Department of Gastroenterology and Hepatology, Princess Alexandra Hospital, Woolloongabba, QLD, Australia
- Translational Research Institute, Woollongabba, QLD, Australia
| | - Mark Morrison
- Faculty of Medicine, The University of Queensland, Brisbane, QLD, Australia
- Department of Gastroenterology and Hepatology, Princess Alexandra Hospital, Woolloongabba, QLD, Australia
- The University of Queensland Frazer Institute, Brisbane, QLD, Australia
| | - Uday C Ghoshal
- Department of Gastroenterology, Sanjay Gandhi Postgraduate Institute of Medical Sciences, Lucknow, India
| | - Gerald J Holtmann
- Faculty of Medicine, The University of Queensland, Brisbane, QLD, Australia
- Department of Gastroenterology and Hepatology, Princess Alexandra Hospital, Woolloongabba, QLD, Australia
- Translational Research Institute, Woollongabba, QLD, Australia
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7
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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
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8
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Sikder MAA, Rashid RB, Ahmed T, Sebina I, Howard DR, Ullah MA, Rahman MM, Lynch JP, Curren B, Werder RB, Simpson J, Bissell A, Morrison M, Walpole C, Radford KJ, Kumar V, Woodruff TM, Ying TH, Ali A, Kaiko GE, Upham JW, Hoelzle RD, Cuív PÓ, Holt PG, Dennis PG, Phipps S. Maternal diet modulates the infant microbiome and intestinal Flt3L necessary for dendritic cell development and immunity to respiratory infection. Immunity 2023; 56:1098-1114.e10. [PMID: 37003256 DOI: 10.1016/j.immuni.2023.03.002] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2022] [Revised: 12/28/2022] [Accepted: 03/02/2023] [Indexed: 04/03/2023]
Abstract
Poor maternal diet during pregnancy is a risk factor for severe lower respiratory infections (sLRIs) in the offspring, but the underlying mechanisms remain elusive. Here, we demonstrate that in mice a maternal low-fiber diet (LFD) led to enhanced LRI severity in infants because of delayed plasmacytoid dendritic cell (pDC) recruitment and perturbation of regulatory T cell expansion in the lungs. LFD altered the composition of the maternal milk microbiome and assembling infant gut microbiome. These microbial changes reduced the secretion of the DC growth factor Flt3L by neonatal intestinal epithelial cells and impaired downstream pDC hematopoiesis. Therapy with a propionate-producing bacteria isolated from the milk of high-fiber diet-fed mothers, or supplementation with propionate, conferred protection against sLRI by restoring gut Flt3L expression and pDC hematopoiesis. Our findings identify a microbiome-dependent Flt3L axis in the gut that promotes pDC hematopoiesis in early life and confers disease resistance against sLRIs.
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Affiliation(s)
- Md Al Amin Sikder
- QIMR Berghofer Medical Research Institute, Herston, Brisbane, QLD 4006, Australia; School of Biomedical Sciences, Faculty of Medicine, The University of Queensland, Brisbane, QLD 4072, Australia; Department of Pharmaceutical Chemistry, Faculty of Pharmacy, University of Dhaka, Dhaka 1000, Bangladesh
| | - Ridwan B Rashid
- QIMR Berghofer Medical Research Institute, Herston, Brisbane, QLD 4006, Australia; School of Biomedical Sciences, Faculty of Medicine, The University of Queensland, Brisbane, QLD 4072, Australia
| | - Tufael Ahmed
- QIMR Berghofer Medical Research Institute, Herston, Brisbane, QLD 4006, Australia; School of Biomedical Sciences, Queensland University of Technology, Brisbane, QLD 4000, Australia
| | - Ismail Sebina
- QIMR Berghofer Medical Research Institute, Herston, Brisbane, QLD 4006, Australia
| | - Daniel R Howard
- QIMR Berghofer Medical Research Institute, Herston, Brisbane, QLD 4006, Australia; School of Biomedical Sciences, Faculty of Medicine, The University of Queensland, Brisbane, QLD 4072, Australia
| | - Md Ashik Ullah
- QIMR Berghofer Medical Research Institute, Herston, Brisbane, QLD 4006, Australia
| | - Muhammed Mahfuzur Rahman
- QIMR Berghofer Medical Research Institute, Herston, Brisbane, QLD 4006, Australia; School of Biomedical Sciences, Faculty of Medicine, The University of Queensland, Brisbane, QLD 4072, Australia
| | - Jason P Lynch
- QIMR Berghofer Medical Research Institute, Herston, Brisbane, QLD 4006, Australia
| | - Bodie Curren
- QIMR Berghofer Medical Research Institute, Herston, Brisbane, QLD 4006, Australia
| | - Rhiannon B Werder
- QIMR Berghofer Medical Research Institute, Herston, Brisbane, QLD 4006, Australia
| | - Jennifer Simpson
- QIMR Berghofer Medical Research Institute, Herston, Brisbane, QLD 4006, Australia; School of Biomedical Sciences and Pharmacy, Faculty of Health, University of Newcastle, Newcastle, NSW, Australia
| | - Alec Bissell
- QIMR Berghofer Medical Research Institute, Herston, Brisbane, QLD 4006, Australia
| | - Mark Morrison
- University of Queensland Diamantina Institute, Faculty of Medicine, The University of Queensland, Woolloongabba, Brisbane, QLD 4102, Australia; Australian Infectious Diseases Research Centre, The University of Queensland, Brisbane, QLD, Australia
| | - Carina Walpole
- Mater Research Institute, The University of Queensland, Translational Research Institute, Wolloongabba, Brisbane, QLD 4102, Australia
| | - Kristen J Radford
- Mater Research Institute, The University of Queensland, Translational Research Institute, Wolloongabba, Brisbane, QLD 4102, Australia
| | - Vinod Kumar
- School of Biomedical Sciences, Faculty of Medicine, The University of Queensland, Brisbane, QLD 4072, Australia
| | - Trent M Woodruff
- School of Biomedical Sciences, Faculty of Medicine, The University of Queensland, Brisbane, QLD 4072, Australia; Australian Infectious Diseases Research Centre, The University of Queensland, Brisbane, QLD, Australia
| | - Tan Hui Ying
- School of Biomedical Sciences and Pharmacy, Faculty of Health, University of Newcastle, Newcastle, NSW, Australia; Hunter Medical Research Institute, Newcastle, NSW, Australia
| | - Ayesha Ali
- School of Biomedical Sciences and Pharmacy, Faculty of Health, University of Newcastle, Newcastle, NSW, Australia; Hunter Medical Research Institute, Newcastle, NSW, Australia
| | - Gerard E Kaiko
- School of Biomedical Sciences and Pharmacy, Faculty of Health, University of Newcastle, Newcastle, NSW, Australia; Hunter Medical Research Institute, Newcastle, NSW, Australia
| | - John W Upham
- University of Queensland Diamantina Institute, Faculty of Medicine, The University of Queensland, Woolloongabba, Brisbane, QLD 4102, Australia; Australian Infectious Diseases Research Centre, The University of Queensland, Brisbane, QLD, Australia; Princess Alexandra Hospital, Brisbane, QLD, Australia
| | - Robert D Hoelzle
- The School of Earth and Environmental Sciences, The University of Queensland, Brisbane, QLD 4072, Australia
| | - Páraic Ó Cuív
- Mater Research Institute, The University of Queensland, Translational Research Institute, Wolloongabba, Brisbane, QLD 4102, Australia; Microba Life Sciences, Translational Research Institute, Woolloongabba, Brisbane, QLD 4102, Australia
| | - Patrick G Holt
- Telethon Kids Institute, The University of Western Australia, Nedlands, WA 6009, Australia
| | - Paul G Dennis
- Australian Infectious Diseases Research Centre, The University of Queensland, Brisbane, QLD, Australia; The School of Earth and Environmental Sciences, The University of Queensland, Brisbane, QLD 4072, Australia
| | - Simon Phipps
- QIMR Berghofer Medical Research Institute, Herston, Brisbane, QLD 4006, Australia; School of Biomedical Sciences, Faculty of Medicine, The University of Queensland, Brisbane, QLD 4072, Australia; School of Biomedical Sciences, Queensland University of Technology, Brisbane, QLD 4000, Australia; Australian Infectious Diseases Research Centre, The University of Queensland, Brisbane, QLD, Australia.
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9
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Volmer JG, Soo RM, Evans PN, Hoedt EC, Astorga Alsina AL, Woodcroft BJ, Tyson GW, Hugenholtz P, Morrison M. Isolation and characterisation of novel Methanocorpusculum species indicates the genus is ancestrally host-associated. BMC Biol 2023; 21:59. [PMID: 36949471 PMCID: PMC10035134 DOI: 10.1186/s12915-023-01524-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2022] [Accepted: 01/20/2023] [Indexed: 03/24/2023] Open
Abstract
BACKGROUND With an increasing interest in the manipulation of methane produced from livestock cultivation, the microbiome of Australian marsupials provides a unique ecological and evolutionary comparison with 'low-methane' emitters. Previously, marsupial species were shown to be enriched for novel lineages of Methanocorpusculum, as well as Methanobrevibacter, Methanosphaera, and Methanomassiliicoccales. Despite sporadic reports of Methanocorpusculum from stool samples of various animal species, there remains little information on the impacts of these methanogens on their hosts. RESULTS Here, we characterise novel host-associated species of Methanocorpusculum, to explore unique host-specific genetic factors and their associated metabolic potential. We performed comparative analyses on 176 Methanocorpusculum genomes comprising 130 metagenome-assembled genomes (MAGs) recovered from 20 public animal metagenome datasets and 35 other publicly available Methanocorpusculum MAGs and isolate genomes of host-associated and environmental origin. Nine MAGs were also produced from faecal metagenomes of the common wombat (Vombatus ursinus) and mahogany glider (Petaurus gracilis), along with the cultivation of one axenic isolate from each respective animal; M. vombati (sp. nov.) and M. petauri (sp. nov.). CONCLUSIONS Through our analyses, we substantially expand the available genetic information for this genus by describing the phenotypic and genetic characteristics of 23 host-associated species of Methanocorpusculum. These lineages display differential enrichment of genes associated with methanogenesis, amino acid biosynthesis, transport system proteins, phosphonate metabolism, and carbohydrate-active enzymes. These results provide insights into the differential genetic and functional adaptations of these novel host-associated species of Methanocorpusculum and suggest that this genus is ancestrally host-associated.
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Affiliation(s)
- James G Volmer
- Faculty of Medicine, University of Queensland Frazer Institute, Translational Research Institute, Woolloongabba, 4102, Australia
- Centre for Microbiome Research, School of Biomedical Sciences, Queensland University of Technology (QUT), Translational Research Institute, Woolloongabba, 4102, Australia
| | - Rochelle M Soo
- School of Chemistry and Molecular Biosciences and Australian Centre for Ecogenomics, University of Queensland, Saint Lucia, 4072, Australia
| | - Paul N Evans
- School of Chemistry and Molecular Biosciences and Australian Centre for Ecogenomics, University of Queensland, Saint Lucia, 4072, Australia
| | - Emily C Hoedt
- Faculty of Medicine, University of Queensland Frazer Institute, Translational Research Institute, Woolloongabba, 4102, Australia
- Current Address: NHMRC Centre of Research Excellence (CRE) in Digestive Health, Hunter Medical Research Institute (HMRI), Newcastle, NSW, Australia
| | - Ana L Astorga Alsina
- Faculty of Medicine, University of Queensland Frazer Institute, Translational Research Institute, Woolloongabba, 4102, Australia
| | - Benjamin J Woodcroft
- Centre for Microbiome Research, School of Biomedical Sciences, Queensland University of Technology (QUT), Translational Research Institute, Woolloongabba, 4102, Australia
| | - Gene W Tyson
- Centre for Microbiome Research, School of Biomedical Sciences, Queensland University of Technology (QUT), Translational Research Institute, Woolloongabba, 4102, Australia
| | - Philip Hugenholtz
- School of Chemistry and Molecular Biosciences and Australian Centre for Ecogenomics, University of Queensland, Saint Lucia, 4072, Australia
| | - Mark Morrison
- Faculty of Medicine, University of Queensland Frazer Institute, Translational Research Institute, Woolloongabba, 4102, Australia.
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10
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Chan S, Hawley CM, Pascoe EM, Cao C, Campbell KL, Campbell SB, Francis RS, Hale R, Isbel NM, Morrison M, Johnson DW. PREBIOTIC: a study protocol of a randomised controlled trial to assess prebiotic supplementation in kidney transplant recipients for preventing infections and gastrointestinal upset - a feasibility study. Pilot Feasibility Stud 2023; 9:11. [PMID: 36647175 PMCID: PMC9841639 DOI: 10.1186/s40814-023-01236-y] [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: 01/13/2021] [Accepted: 01/02/2023] [Indexed: 01/18/2023] Open
Abstract
BACKGROUND Modulating the microbiota in the large intestine of kidney transplant recipients through prebiotic supplementation may prevent infectious complications from occurring. To date, there have been no interventional trials which have investigated this novel treatment in kidney transplantation. The aim of PREBIOTIC is to assess the feasibility of performing a randomised controlled trial of prebiotics in reducing infections and gastrointestinal symptoms in kidney transplant recipients. METHODS Sixty kidney transplant patients will be recruited to a double-blind, placebo-controlled, randomised feasibility trial. Patients will be provided with prebiotic therapy or placebo for 4 to 6 weeks. Outcomes will include recruitment, adherence, tolerance, retention, laboratory parameters (including serum indoxyl sulphate, ρ-cresyl sulphate and stool collection), patients' self-assessed quality of life, gastrointestinal symptoms and clinical outcomes. DISCUSSION This trial will assess the feasibility of prebiotic supplementation in kidney transplant recipients. Prebiotics not only may alter the gut microbiota and their inherent metabolism and production of uraemic toxins but also may prevent infections from occurring in kidney transplant recipients. TRIAL REGISTRATION Australian New Zealand Clinical Trials Registry number ACTRN12618001057279p. The date of registration was 25th June 2018, https://www.anzctr.org.au/Trial/Registration/TrialReview.aspx?id=375370&isReview=true .
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Affiliation(s)
- Samuel Chan
- grid.412744.00000 0004 0380 2017Department of Nephrology, Princess Alexandra Hospital, Woolloongabba, Queensland Australia ,grid.1003.20000 0000 9320 7537Australasian Kidney Trials Network, The University of Queensland, Brisbane, Queensland Australia ,grid.489335.00000000406180938Translational Research Institute, Brisbane, Queensland Australia
| | - Carmel M. Hawley
- grid.412744.00000 0004 0380 2017Department of Nephrology, Princess Alexandra Hospital, Woolloongabba, Queensland Australia ,grid.1003.20000 0000 9320 7537Australasian Kidney Trials Network, The University of Queensland, Brisbane, Queensland Australia ,grid.489335.00000000406180938Translational Research Institute, Brisbane, Queensland Australia
| | - Elaine M. Pascoe
- grid.412744.00000 0004 0380 2017Department of Nephrology, Princess Alexandra Hospital, Woolloongabba, Queensland Australia ,grid.1003.20000 0000 9320 7537Australasian Kidney Trials Network, The University of Queensland, Brisbane, Queensland Australia ,grid.489335.00000000406180938Translational Research Institute, Brisbane, Queensland Australia
| | - Christopher Cao
- grid.412744.00000 0004 0380 2017Department of Nephrology, Princess Alexandra Hospital, Woolloongabba, Queensland Australia
| | - Katrina L. Campbell
- grid.1003.20000 0000 9320 7537Australasian Kidney Trials Network, The University of Queensland, Brisbane, Queensland Australia
| | - Scott B. Campbell
- grid.412744.00000 0004 0380 2017Department of Nephrology, Princess Alexandra Hospital, Woolloongabba, Queensland Australia ,grid.1003.20000 0000 9320 7537Australasian Kidney Trials Network, The University of Queensland, Brisbane, Queensland Australia ,grid.489335.00000000406180938Translational Research Institute, Brisbane, Queensland Australia
| | - Ross S. Francis
- grid.412744.00000 0004 0380 2017Department of Nephrology, Princess Alexandra Hospital, Woolloongabba, Queensland Australia ,grid.1003.20000 0000 9320 7537Australasian Kidney Trials Network, The University of Queensland, Brisbane, Queensland Australia ,grid.489335.00000000406180938Translational Research Institute, Brisbane, Queensland Australia
| | - Rachael Hale
- grid.412744.00000 0004 0380 2017Department of Nephrology, Princess Alexandra Hospital, Woolloongabba, Queensland Australia
| | - Nicole M. Isbel
- grid.412744.00000 0004 0380 2017Department of Nephrology, Princess Alexandra Hospital, Woolloongabba, Queensland Australia ,grid.1003.20000 0000 9320 7537Australasian Kidney Trials Network, The University of Queensland, Brisbane, Queensland Australia ,grid.489335.00000000406180938Translational Research Institute, Brisbane, Queensland Australia
| | - Mark Morrison
- grid.1003.20000 0000 9320 7537The University of Queensland Diamantina Institute, Faculty of Medicine, University of Queensland, Woolloongabba, Queensland Australia
| | - David W. Johnson
- grid.412744.00000 0004 0380 2017Department of Nephrology, Princess Alexandra Hospital, Woolloongabba, Queensland Australia ,grid.1003.20000 0000 9320 7537Australasian Kidney Trials Network, The University of Queensland, Brisbane, Queensland Australia ,grid.489335.00000000406180938Translational Research Institute, Brisbane, Queensland Australia
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11
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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.
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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
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12
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Shah A, Kang S, Talley NJ, Do A, Walker MM, Shanahan ER, Koloski NA, Jones MP, Keely S, Morrison M, Holtmann GJ. The duodenal mucosa associated microbiome, visceral sensory function, immune activation and psychological comorbidities in functional gastrointestinal disorders with and without self-reported non-celiac wheat sensitivity. Gut Microbes 2022; 14:2132078. [PMID: 36303431 PMCID: PMC9621048 DOI: 10.1080/19490976.2022.2132078] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
Abstract
Frequently, patients with functional gastrointestinal disorders (FGIDs) report intolerance of wheat products. We compared gastrointestinal symptoms, sensory function, psychiatric comorbidities, gut-homing immune cells, and duodenal mucosa-associated microbiome (d-MAM) in FGID patients and controls with and without self-reported wheat sensitivity (SR-NCWS). We recruited 40 FGID patients and 20 controls referred by GPs for treatment. Gastrointestinal/extraintestinal symptoms, visceral sensory function, psychological comorbidities, and SR-NCWS were assessed in a standardized approach. Peripheral gut homing T-cells (CD4+α4+β7+CCR9+/CD8+α4+β7+CCR9+) were quantified, and the d-MAM was assessed by DNA sequencing for 46 subjects. Factors of bacterial genera were extracted utilizing factor analysis with varimax rotation and factors univariately associated with FGID or SR-NCWS included in a subsequent multivariate analysis of variance to identify statistically independent discriminators. Anxiety scores (p < .05) and increased symptom responses to a nutrient challenge (p < .05) were univariately associated with FGID. Gut homing T-cells were increased in FGID patients with SR-NCWS compared to other groups (p all <0.05). MANOVA revealed that anxiety (p = .03), visceral sensory function (p = 0.007), and a d-MAM factor comprise members of the Alloprevotella, Prevotella, Peptostreptococcus, Leptotrichia, and Veillonella lineages were significantly (p = .001) associated with FGID, while gut homing CD4+α4+ β7+CCR9+ T-cells were associated (p = .002) with SR-NCWS. Compared to controls, patients with and without SR-NCWS show that there are shifts in the amplicon sequence variants within specific bacterial genera between the FGID subgroups (particularly Prevotella and Streptococcus) as well as distinct bacterial taxa discriminatory for the two different FGID subtypes. Compared to controls, both FGID patients with and without SR-NCWS have an increased symptom response to a standardized nutrient challenge and increased anxiety scores. The FGID patients with SR-NCWS - as compared to FGID without SR-NCWS (and controls without SR-NCWS) - have increased gut homing T-cells. The d-MAM profiles suggest species and strain-based variations between the two FGID subtypes and in comparison to controls.
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Affiliation(s)
- Ayesha Shah
- Department of Gastroenterology and Hepatology, Princess Alexandra Hospital, Brisbane, Australia,Translational Research Institute Queensland, Australia,Faculty of Medicine, University of Queensland, Brisbane, Australia
| | - Seungha Kang
- Faculty of Medicine, University of Queensland, Brisbane, Australia,University of Queensland Diamantina Institute, Woolloongabba, Australia
| | - Nicholas J Talley
- College of Health, Medicine and Wellbeing, University of Newcastle, Callaghan, and Hunter Medical Research Institute, New Lambton Heights, Australia
| | - Anh Do
- Department of Gastroenterology and Hepatology, Princess Alexandra Hospital, Brisbane, Australia,Faculty of Medicine, University of Queensland, Brisbane, Australia
| | - Marjorie M Walker
- College of Health, Medicine and Wellbeing, University of Newcastle, Callaghan, and Hunter Medical Research Institute, New Lambton Heights, Australia
| | - Erin R Shanahan
- Department of Gastroenterology and Hepatology, Princess Alexandra Hospital, Brisbane, Australia,Translational Research Institute Queensland, Australia
| | - Natasha A Koloski
- Department of Gastroenterology and Hepatology, Princess Alexandra Hospital, Brisbane, Australia,Translational Research Institute Queensland, Australia,Faculty of Medicine, University of Queensland, Brisbane, Australia,College of Health, Medicine and Wellbeing, University of Newcastle, Callaghan, and Hunter Medical Research Institute, New Lambton Heights, Australia
| | - Michael P Jones
- College of Health, Medicine and Wellbeing, University of Newcastle, Callaghan, and Hunter Medical Research Institute, New Lambton Heights, Australia
| | - Simon Keely
- School of Biomedical Sciences and Pharmacy, University of Newcastle, Callaghan, and Hunter Medical Research Institute, New Lambton Heights, Australia
| | - Mark Morrison
- Department of Gastroenterology and Hepatology, Princess Alexandra Hospital, Brisbane, Australia,Faculty of Medicine, University of Queensland, Brisbane, Australia,University of Queensland Diamantina Institute, Woolloongabba, Australia,CONTACT Mark Morrison
| | - Gerald J Holtmann
- Department of Gastroenterology and Hepatology, Princess Alexandra Hospital, Brisbane, Australia,Translational Research Institute Queensland, Australia,Faculty of Medicine, University of Queensland, Brisbane, Australia,Gerald J Holtmann Princess Alexandra Hospital, Brisbane Department of Gastroenterology and Hepatology & University of Queensland 199 Ipswich Road, Woolloongabba, Queensland, Australia
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13
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Shah A, Thite P, Hansen T, Kendall BJ, Sanders DS, Morrison M, Jones MP, Holtmann G. Links between celiac disease and small intestinal bacterial overgrowth: A systematic review and meta-analysis. J Gastroenterol Hepatol 2022; 37:1844-1852. [PMID: 35734803 PMCID: PMC9795979 DOI: 10.1111/jgh.15920] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/05/2022] [Accepted: 06/19/2022] [Indexed: 12/30/2022]
Abstract
BACKGROUND AND AIM Symptoms of small intestinal bacterial overgrowth (SIBO) and celiac disease (CeD) often overlap, and studies suggest a link between SIBO and CeD. We thus conducted a systematic review and meta-analysis to compare SIBO prevalence in CeD patients and controls and assessed effects of antimicrobial therapy on gastrointestinal symptoms in SIBO positive CeD patients. METHODS Electronic databases were searched until February 2022 for studies reporting SIBO prevalence in CeD. Prevalence rates, odds ratio (OR), and 95% confidence intervals (CI) of SIBO in CeD and controls were calculated. RESULTS We included 14 studies, with 742 CeD patients and 178 controls. The pooled prevalence of SIBO in CeD was 18.3% (95% CI: 11.4-28.1), with substantial heterogeneity. Including case-control studies with healthy controls, SIBO prevalence in CeD patients was significantly increased (OR 5.1, 95% CI: 2.1-12.4, P = 0.0001), with minimal heterogeneity. Utilizing breath tests, SIBO prevalence in CeD patients was 20.8% (95% CI: 11.9-33.7), almost two-fold higher compared with culture-based methods at 12.6% (95% CI: 5.1-28.0), with substantial heterogeneity in both analyses. SIBO prevalence in CeD patients nonresponsive to a gluten free diet (GFD) was not statistically higher as compared with those responsive to GFD (OR 1.5, 95% CI: 0.4-5.0, P = 0.511). Antibiotic therapy of SIBO positive CeD patients resulted in improvement in gastrointestinal symptoms in 95.6% (95% CI: 78.0-99.9) and normalization of breath tests. CONCLUSIONS This study suggests a link between SIBO and CeD. While SIBO could explain nonresponse to a GFD in CeD, SIBO prevalence is not statistically higher in CeD patients non-responsive to GFD. The overall quality of the evidence is low, mainly due to substantial "clinical heterogeneity" and the limited sensitivity/specificity of the available diagnostic tests.
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Affiliation(s)
- Ayesha Shah
- Faculty of MedicineThe University of QueenslandBrisbaneQueenslandAustralia,Department of Gastroenterology and HepatologyPrincess Alexandra HospitalWoolloongabbaQueenslandAustralia,Translational Research InstituteWoolloongabbaQueenslandAustralia
| | - Parag Thite
- Faculty of MedicineThe University of QueenslandBrisbaneQueenslandAustralia,Department of Gastroenterology and HepatologyPrincess Alexandra HospitalWoolloongabbaQueenslandAustralia
| | - Teressa Hansen
- Faculty of MedicineThe University of QueenslandBrisbaneQueenslandAustralia,Department of Gastroenterology and HepatologyPrincess Alexandra HospitalWoolloongabbaQueenslandAustralia,Translational Research InstituteWoolloongabbaQueenslandAustralia
| | - Bradley J Kendall
- Faculty of MedicineThe University of QueenslandBrisbaneQueenslandAustralia,Department of Gastroenterology and HepatologyPrincess Alexandra HospitalWoolloongabbaQueenslandAustralia
| | - David S Sanders
- Academic Unit of GastroenterologySheffield Teaching Hospitals NHS Foundation TrustSheffieldUK
| | - Mark Morrison
- Faculty of MedicineThe University of QueenslandBrisbaneQueenslandAustralia,Department of Gastroenterology and HepatologyPrincess Alexandra HospitalWoolloongabbaQueenslandAustralia,Diamantina InstituteThe University of QueenslandBrisbaneQueenslandAustralia
| | - Michael P Jones
- Department of PsychologyMacquarie UniversitySydneyNew South WalesAustralia
| | - Gerald Holtmann
- Faculty of MedicineThe University of QueenslandBrisbaneQueenslandAustralia,Department of Gastroenterology and HepatologyPrincess Alexandra HospitalWoolloongabbaQueenslandAustralia,Translational Research InstituteWoolloongabbaQueenslandAustralia
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14
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Shanahan ER, Kang S, Staudacher H, Shah A, Do A, Burns G, Chachay VS, Koloski NA, Keely S, Walker MM, Talley NJ, Morrison M, Holtmann GJ. Alterations to the duodenal microbiota are linked to gastric emptying and symptoms in functional dyspepsia. Gut 2022; 72:929-938. [PMID: 36167662 DOI: 10.1136/gutjnl-2021-326158] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/18/2021] [Accepted: 08/28/2022] [Indexed: 12/08/2022]
Abstract
OBJECTIVE Functional dyspepsia (FD) is a complex disorder, with debilitating epigastric symptoms. Evidence suggests alterations in gastrointestinal (GI) motility, visceral hypersensitivity, permeability and low-level immune activation in the duodenum may play a role. However, we still have a relatively poor understanding of how these factors interact to precipitate the onset of FD symptoms which are frequently meal related. The duodenal microbiota, in combination with specific dietary substrates, may be important mediators in disease pathophysiology; however, these interlinked factors have not been thoroughly investigated in FD. DESIGN Eighty-six individuals (56 FD, 30 controls) undergoing endoscopy were consecutively recruited and underwent detailed clinical assessment, including upper GI symptoms, gastric emptying and dietary assessment. Duodenal biopsies were obtained aseptically, and the mucosa-associated microbiota (MAM) analysed via 16S rRNA gene amplicon sequencing. RESULTS The relative abundances of predominant members of the Firmicutes, Bacteroidota and Fusobacteriota phyla were linked to symptom burden in FD. Inverse relationships between the relative abundances of Streptococcus and Prevotella, and the relative abundance of Veillonella spp with gastric emptying time, were also observed. No significant differences in long-term nutrient intake or diet quality were found between FD and controls, and there appeared to be limited association between habitual diet and duodenal MAM profiles. CONCLUSION This study suggests a link between the duodenal MAM, gastric emptying and FD symptoms, and this is largely independent of long-term dietary intake.
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Affiliation(s)
- Erin R Shanahan
- Faculty of Medicine and Faculty of Health & Behavioural Sciences, University of Queensland, Brisbane, Queensland, Australia.,Department of Gastroenterology and Hepatology, Princess Alexandra Hospital, Woolloongabba, Queensland, Australia
| | - Seungha Kang
- The University of Queensland Diamantina Institute, Faculty of Medicine, University of Queensland, Brisbane, Queensland, Australia
| | - Heidi Staudacher
- Faculty of Medicine and Faculty of Health & Behavioural Sciences, University of Queensland, Brisbane, Queensland, Australia.,Department of Gastroenterology and Hepatology, Princess Alexandra Hospital, Woolloongabba, Queensland, Australia
| | - Ayesha Shah
- Department of Gastroenterology and Hepatology, Princess Alexandra Hospital, Woolloongabba, Queensland, Australia.,Faculty of Medicine, Faculty of Health & Behavioural Sciences, and NHMRC Centre of Research Excellence Digestive Health, University of Queensland, Brisbane, Queensland, Australia
| | - Anh Do
- Department of Gastroenterology and Hepatology, Princess Alexandra Hospital, Woolloongabba, Queensland, Australia
| | - Grace Burns
- School of Biomedical Sciences and Pharmacy and NHMRC Centre of Research Excellence Digestive Health, College of Health, Medicine and Wellbeing, University of Newcastle, Callaghan, New South Wales, Australia.,Immune Health Program, Hunter Medical Research Institute, New Lambton Heights, New South Wales, Australia
| | - Veronique S Chachay
- School of Human Movement and Nutrition Sciences, Faculty of Health and Behavioural Sciences, University of Queensland, Brisbane, Queensland, Australia
| | - Natasha A Koloski
- Department of Gastroenterology and Hepatology, Princess Alexandra Hospital, Woolloongabba, Queensland, Australia.,Faculty of Medicine, Faculty of Health & Behavioural Sciences, and NHMRC Centre of Research Excellence Digestive Health, University of Queensland, Brisbane, Queensland, Australia
| | - Simon Keely
- School of Biomedical Sciences and Pharmacy and NHMRC Centre of Research Excellence Digestive Health, College of Health, Medicine and Wellbeing, University of Newcastle, Callaghan, New South Wales, Australia.,Immune Health Program, Hunter Medical Research Institute, New Lambton Heights, New South Wales, Australia
| | - Marjorie M Walker
- Hunter Medical Research Institute, New Lambton Heights, New South Wales, Australia.,School of Medicine and Public Health and NHMRC Centre of Research Excellence Digestive Health, College of Health, Medicine and Wellbeing, University of Newcastle, Callaghan, New South Wales, Australia
| | - Nicholas J Talley
- Hunter Medical Research Institute, New Lambton Heights, New South Wales, Australia.,School of Medicine and Public Health and NHMRC Centre of Research Excellence Digestive Health, College of Health, Medicine and Wellbeing, University of Newcastle, Callaghan, New South Wales, Australia
| | - Mark Morrison
- The University of Queensland Diamantina Institute and NHMRC Centre of Research Excellence Digestive Health, Faculty of Medicine, University of Queensland, Brisbane, Queensland, Australia
| | - Gerald J Holtmann
- Department of Gastroenterology and Hepatology, Princess Alexandra Hospital, Woolloongabba, Queensland, Australia .,Faculty of Medicine, Faculty of Health & Behavioural Sciences, and NHMRC Centre of Research Excellence Digestive Health, University of Queensland, Brisbane, Queensland, Australia
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15
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Trakman GL, Lin WYY, Hamilton AL, Wilson-O’Brien AL, Stanley A, Ching JY, Yu J, Mak JWY, Sun Y, Niu J, Miao Y, Lin X, Feng R, Chen M, Shivappa N, Hebert JR, Morrison M, Ng SC, Kamm MA. Processed Food as a Risk Factor for the Development and Perpetuation of Crohn's Disease-The ENIGMA Study. Nutrients 2022; 14:nu14173627. [PMID: 36079885 PMCID: PMC9460819 DOI: 10.3390/nu14173627] [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] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2022] [Revised: 08/25/2022] [Accepted: 08/30/2022] [Indexed: 11/17/2022] Open
Abstract
(1) Background: Developing countries have experienced a rapid recent rise in Inflammatory Bowel Disease (IBD) incidence and emerging evidence suggests processed foods and food additives may predispose one to the development and perpetuation of Crohn’s disease (CD). The aim of this study was to evaluate processed food and food additive intake in CD patients and controls, in Australia (high CD incidence), Hong Kong (intermediate incidence) and mainland China (emerging incidence). (2) Methods: In 274 CD patients (CD), 82 first-degree relatives (FDR), 83 household members (HM) and 92 healthy unrelated controls (HC) from Australia (n = 180), Hong Kong (HK) (n = 160) and mainland China (n = 191) we estimated early life (0–18 years), recent (12 months), and current processed and food additive intake, using validated questionnaires and a 3-day-food diary. (3) Results: Early life processed food intake: Combining all regions, CD were more likely to have consumed soft drinks and fast foods than HM, more likely to have consumed processed fruit and snacks than their FDR, and more likely to have consumed a range of processed foods than HC. HK and China CD patients were more likely to have consumed a range of processed foods than HC. Recent food-additive intake (12-months): Combining all regions, CD patients had significantly higher intakes of aspartame and sucralose, and polysorbate-80, than HC, and more total emulsifiers, artificial sweeteners, and titanium dioxide than FDR and HC. HK and China CD patients had a higher intake of almost all food additives than all controls. Current additive intake (3-days): Australian and HK CD patients had higher total food-additive intake than FDR, and HK CD patients had a higher intake of total food-additives and emulsifiers than HM. (4) Conclusions: CD patients have been exposed to more processed food and food additives than control groups, which may predispose them to CD development and ongoing inflammation.
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Affiliation(s)
- Gina L. Trakman
- Department of Gastroenterology, St Vincent’s Hospital, Melbourne 3065, Australia
- Department of Medicine, The University of Melbourne, Melbourne 3065, Australia
- Department of Dietetics, Nutrition and Sport, La Trobe University, Melbourne 3086, Australia
| | - Winnie Y. Y. Lin
- Department of Medicine and Therapeutics, The Chinese University of Hong Kong, Hong Kong, China
- Microbiota I-Center (MagIC), The Chinese University of Hong Kong, Hong Kong, China
| | - Amy L. Hamilton
- Department of Gastroenterology, St Vincent’s Hospital, Melbourne 3065, Australia
- Department of Medicine, The University of Melbourne, Melbourne 3065, Australia
| | - Amy L. Wilson-O’Brien
- Department of Gastroenterology, St Vincent’s Hospital, Melbourne 3065, Australia
- Department of Medicine, The University of Melbourne, Melbourne 3065, Australia
| | - Annalise Stanley
- Department of Gastroenterology, St Vincent’s Hospital, Melbourne 3065, Australia
| | - Jessica Y. Ching
- Department of Medicine and Therapeutics, The Chinese University of Hong Kong, Hong Kong, China
- Institute of Digestive Disease, State Key Laboratory of Digestive Diseases, The Chinese University of Hong Kong, Hong Kong, China
| | - Jun Yu
- Department of Medicine and Therapeutics, The Chinese University of Hong Kong, Hong Kong, China
- Institute of Digestive Disease, State Key Laboratory of Digestive Diseases, The Chinese University of Hong Kong, Hong Kong, China
| | - Joyce W. Y. Mak
- Department of Medicine and Therapeutics, The Chinese University of Hong Kong, Hong Kong, China
- Institute of Digestive Disease, State Key Laboratory of Digestive Diseases, The Chinese University of Hong Kong, Hong Kong, China
| | - Yang Sun
- Department of Gastroenterology, The First Affiliated Hospital of Kunming Medical University, Kunming 650032, China
- Yunnan Province Clinical Research Center for Digestive Diseases, Kunming 650032, China
| | - Junkun Niu
- Department of Gastroenterology, The First Affiliated Hospital of Kunming Medical University, Kunming 650032, China
- Yunnan Province Clinical Research Center for Digestive Diseases, Kunming 650032, China
| | - Yinglei Miao
- Department of Gastroenterology, The First Affiliated Hospital of Kunming Medical University, Kunming 650032, China
- Yunnan Province Clinical Research Center for Digestive Diseases, Kunming 650032, China
| | - Xiaoqing Lin
- Department of Gastroenterology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou 510060, China
| | - Rui Feng
- Department of Gastroenterology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou 510060, China
| | - Minhu Chen
- Department of Gastroenterology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou 510060, China
| | - Nitin Shivappa
- The Cancer Prevention and Control Program, Department of Epidemiology and Biostatistics, Norman J Arnold School of Public Health, University of South Carolina, Columbia, SC 29208, USA
- Department of Nutrition, Connecting Health Innovations LLC, Columbia, SC 29201, USA
| | - James R. Hebert
- The Cancer Prevention and Control Program, Department of Epidemiology and Biostatistics, Norman J Arnold School of Public Health, University of South Carolina, Columbia, SC 29208, USA
- Department of Nutrition, Connecting Health Innovations LLC, Columbia, SC 29201, USA
| | - Mark Morrison
- The University of Queensland Diamantina Institute, Faculty of Medicine, Translational Research Institute, Brisbane 4102, Australia
| | - Siew C. Ng
- Department of Medicine and Therapeutics, The Chinese University of Hong Kong, Hong Kong, China
- Microbiota I-Center (MagIC), The Chinese University of Hong Kong, Hong Kong, China
- Institute of Digestive Disease, State Key Laboratory of Digestive Diseases, The Chinese University of Hong Kong, Hong Kong, China
- Centre for Gut Microbiota Research, The Chinese University of Hong Kong, Hong Kong, China
| | - Michael A Kamm
- Department of Gastroenterology, St Vincent’s Hospital, Melbourne 3065, Australia
- Department of Medicine, The University of Melbourne, Melbourne 3065, Australia
- Correspondence: ; Tel.: +61-3 9417-5064
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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.
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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
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17
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Mak JWY, Yang S, Stanley A, Lin X, Morrison M, Ching JYL, Niu J, Wilson‐O'Brien AL, Feng R, Tang W, Hamilton AL, Or L, Trakman GL, Lin WYY, Sung JJY, Chen MH, Mao Y, Kamm MA, Ng SC. Childhood antibiotics as a risk factor for Crohn's disease: The
ENIGMA
International Cohort Study. JGH Open 2022; 6:369-377. [PMID: 35774350 PMCID: PMC9218523 DOI: 10.1002/jgh3.12755] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/11/2022] [Accepted: 04/25/2022] [Indexed: 12/14/2022]
Abstract
Background and Aim Environmental factors play a key role in development of Crohn's disease (CD), thought to be mediated by changes in the gut microbiota. We aimed to delineate the potential contribution of antibiotic exposure to subsequent development of CD, across diverse geographical populations. Methods This case–control study in Australia and three cities in China (Hong Kong, Guangzhou, and Kunming) included four groups: patients with CD, at‐risk individuals including non‐affected first‐degree relatives (FDRs) and household members of CD patients (HM), and unrelated healthy controls (HCs). Environmental risk factors, including childhood antibiotic use and 13 other categories, were assessed using a self‐developed questionnaire. Logistic regression and conditional logistic regression were used to determine environmental factors associated with CD development. Results From 2017 to 2019, a total of 254 patients with CD (mean age: 37.98 ± 13.76 years; 58.3% male), 73 FDR (mean age: 49.35 ± 13.28 years; 46.6% male), 122 HMs (including FDR) (mean age: 45.50 ± 13.25 years; 47.5% male), and 78 HC (mean age: 45.57 ± 11.24; 47.4% male) were included. Comparing CD patients with their FDR and HMs, antibiotic use before 18 years old was a risk factor for CD development (adjusted odds ratio [OR] 3.46, 95% confidence interval [CI] 1.38–8.69; P = 0.008). There were no significant differences in other childhood environmental risk factors between CD and their FDR or HMs. Subgroup analysis showed that antibiotic use <18 years old was a risk factor for CD development in the Chinese (adjusted OR 4.80, 95% CI 1.62–12.24; P = 0.005) but not in Australian populations (OR 1.80, 95% CI 0.33–9.95; P = 0.498). Conclusion Use of antibiotics <18 years was a risk factor for CD development. Attention should be paid to identifying modifiable environmental risk factors in early childhood, especially in at‐risk families.
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Affiliation(s)
- Joyce W Y Mak
- Department of Medicine and Therapeutics, Institute of Digestive Disease The Chinese University of Hong Kong Shatin Hong Kong
| | - Sun Yang
- Department of Gastroenterology First Affiliated Hospital of Kunming Medical University Kunming Yunnan China
| | - Annalise Stanley
- Department of Gastroenterology St Vincent's Hospital Melbourne Victoria Australia
| | - Xiaoqing Lin
- The First Affiliated Hospital Sun Yat‐sen University Guangzhou China
| | - Mark Morrison
- Diamantina Institute, Faculty of Medicine The University of Queensland Brisbane Queensland Australia
| | - Jessica Y L Ching
- Department of Medicine and Therapeutics, Institute of Digestive Disease The Chinese University of Hong Kong Shatin Hong Kong
| | - Junkun Niu
- Department of Gastroenterology First Affiliated Hospital of Kunming Medical University Kunming Yunnan China
| | - Amy L Wilson‐O'Brien
- Department of Gastroenterology St Vincent's Hospital Melbourne Victoria Australia
| | - Rui Feng
- The First Affiliated Hospital Sun Yat‐sen University Guangzhou China
| | - Whitney Tang
- Department of Medicine and Therapeutics, Institute of Digestive Disease The Chinese University of Hong Kong Shatin Hong Kong
- LKS Institute of Health Sciences, State Key Laboratory of Digestive Disease The Chinese University of Hong Kong Shatin Hong Kong
- Microbiota I‐Center (MagIC) Hong Kong
| | - Amy L Hamilton
- Department of Gastroenterology St Vincent's Hospital Melbourne Victoria Australia
| | - Leo Or
- Department of Medicine and Therapeutics, Institute of Digestive Disease The Chinese University of Hong Kong Shatin Hong Kong
- LKS Institute of Health Sciences, State Key Laboratory of Digestive Disease The Chinese University of Hong Kong Shatin Hong Kong
| | - Gina L Trakman
- Department of Gastroenterology St Vincent's Hospital Melbourne Victoria Australia
| | - Winnie Y Y Lin
- Department of Medicine and Therapeutics, Institute of Digestive Disease The Chinese University of Hong Kong Shatin Hong Kong
- Microbiota I‐Center (MagIC) Hong Kong
| | - Joseph J Y Sung
- Lee Kong Chian School of Medicine Nanyang Technological University Singapore
| | - Ming Hu Chen
- The First Affiliated Hospital Sun Yat‐sen University Guangzhou China
| | - Yinglei Mao
- Department of Gastroenterology First Affiliated Hospital of Kunming Medical University Kunming Yunnan China
| | - Michael A Kamm
- Department of Gastroenterology St Vincent's Hospital Melbourne Victoria Australia
| | - Siew C Ng
- Department of Medicine and Therapeutics, Institute of Digestive Disease The Chinese University of Hong Kong Shatin Hong Kong
- LKS Institute of Health Sciences, State Key Laboratory of Digestive Disease The Chinese University of Hong Kong Shatin Hong Kong
- Microbiota I‐Center (MagIC) Hong Kong
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18
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Hoedt EC, Fan K, Burns GL, Kang S, Morrison M, Talley NJ, Keely S. Functional Dyspepsia Duodeum Mucosal Associated Microbiota: Comparison Between Fresh Biopsy and Historical Formalin‐fixed Paraffin‐embedded Biopsies Is Viable. FASEB J 2022. [DOI: 10.1096/fasebj.2022.36.s1.r4272] [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: 11/11/2022]
Affiliation(s)
| | | | | | - Seungha Kang
- Diamantina InstituteFaculty of MedicineThe University of QueenslandBrisbane
| | - Mark Morrison
- Diamantina InstituteFaculty of MedicineThe University of QueenslandBrisbane
| | | | - Simon Keely
- School of Biomedical Sciences & PharmacyCollege of Health, Medicine and WellbeingUniversity of NewcastleNewcastle
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19
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Burns GL, Hoedt EC, Jamaluddin MFB, Shanahan E, Lim Y, Teh JJ, Bruce J, Almazi J, Woldu A, Dun MD, Tanwar P, Potter M, Minahan K, Horvat J, Foster PS, Holtmann G, Veysey M, Walker MM, Morrison M, Talley NJ, Keely S. Seroreactivity to mucosa associated microbiota is associated with T cell gut‐homing in functional dyspepsia patients. FASEB J 2022. [DOI: 10.1096/fasebj.2022.36.s1.r4212] [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: 11/11/2022]
Affiliation(s)
| | | | | | | | - Yenkai Lim
- University of Queensland Diamantina InstituteBrisbane
| | - Jing Jie Teh
- University of Queensland Diamantina InstituteBrisbane
| | | | | | | | | | | | | | | | - Jay Horvat
- University of NewcastleNew Lambton Heights
| | | | | | | | | | - Mark Morrison
- University of Queensland Diamantina InstituteBrisbane
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20
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Krueger A, Mohamed A, Kolka CM, Stoll T, Zaugg J, Linedale R, Morrison M, Soyer HP, Hugenholtz P, Frazer IH, Hill MM. Skin Cancer-Associated S. aureus Strains Can Induce DNA Damage in Human Keratinocytes by Downregulating DNA Repair and Promoting Oxidative Stress. Cancers (Basel) 2022; 14:2143. [PMID: 35565272 PMCID: PMC9106025 DOI: 10.3390/cancers14092143] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2022] [Revised: 04/14/2022] [Accepted: 04/18/2022] [Indexed: 12/19/2022] Open
Abstract
Actinic keratosis (AK) is a premalignant lesion, common on severely photodamaged skin, that can progress over time to cutaneous squamous cell carcinoma (SCC). A high bacterial load of Staphylococcus aureus is associated with AK and SCC, but it is unknown whether this has a direct impact on skin cancer development. To determine whether S. aureus can have cancer-promoting effects on skin cells, we performed RNA sequencing and shotgun proteomics on primary human keratinocytes after challenge with sterile culture supernatant ('secretome') from four S. aureus clinical strains isolated from AK and SCC. Secretomes of two of the S. aureus strains induced keratinocytes to overexpress biomarkers associated with skin carcinogenesis and upregulated the expression of enzymes linked to reduced skin barrier function. Further, these strains induced oxidative stress markers and all secretomes downregulated DNA repair mechanisms. Subsequent experiments on an expanded set of lesion-associated S. aureus strains confirmed that exposure to their secretomes led to increased oxidative stress and DNA damage in primary human keratinocytes. A significant correlation between the concentration of S. aureus phenol soluble modulin toxins in secretome and the secretome-induced level of oxidative stress and genotoxicity in keratinocytes was observed. Taken together, these data demonstrate that secreted compounds from lesion-associated clinical isolates of S. aureus can have cancer-promoting effects in keratinocytes that may be relevant to skin oncogenesis.
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Affiliation(s)
- Annika Krueger
- The University of Queensland Diamantina Institute, Faculty of Medicine, The University of Queensland, Translational Research Institute, Woolloongabba, QLD 4102, Australia; (A.K.); (R.L.); (M.M.); (I.H.F.)
- QIMR Berghofer Medical Research Institute, Herston, Brisbane, QLD 4006, Australia; (A.M.); (C.M.K.); (T.S.)
| | - Ahmed Mohamed
- QIMR Berghofer Medical Research Institute, Herston, Brisbane, QLD 4006, Australia; (A.M.); (C.M.K.); (T.S.)
| | - Cathryn M. Kolka
- QIMR Berghofer Medical Research Institute, Herston, Brisbane, QLD 4006, Australia; (A.M.); (C.M.K.); (T.S.)
| | - Thomas Stoll
- QIMR Berghofer Medical Research Institute, Herston, Brisbane, QLD 4006, Australia; (A.M.); (C.M.K.); (T.S.)
| | - Julian Zaugg
- Australian Centre for Ecogenomics, School of Chemistry and Molecular Biosciences, The University of Queensland, St Lucia, QLD 4072, Australia; (J.Z.); (P.H.)
| | - Richard Linedale
- The University of Queensland Diamantina Institute, Faculty of Medicine, The University of Queensland, Translational Research Institute, Woolloongabba, QLD 4102, Australia; (A.K.); (R.L.); (M.M.); (I.H.F.)
| | - Mark Morrison
- The University of Queensland Diamantina Institute, Faculty of Medicine, The University of Queensland, Translational Research Institute, Woolloongabba, QLD 4102, Australia; (A.K.); (R.L.); (M.M.); (I.H.F.)
| | - H. Peter Soyer
- Dermatology Research Centre, The University of Queensland Diamantina Institute, The University of Queensland, Brisbane, QLD 4102, Australia;
- Dermatology Department, Princess Alexandra Hospital, Brisbane, QLD 4102, Australia
| | - Philip Hugenholtz
- Australian Centre for Ecogenomics, School of Chemistry and Molecular Biosciences, The University of Queensland, St Lucia, QLD 4072, Australia; (J.Z.); (P.H.)
| | - Ian H. Frazer
- The University of Queensland Diamantina Institute, Faculty of Medicine, The University of Queensland, Translational Research Institute, Woolloongabba, QLD 4102, Australia; (A.K.); (R.L.); (M.M.); (I.H.F.)
| | - Michelle M. Hill
- The University of Queensland Diamantina Institute, Faculty of Medicine, The University of Queensland, Translational Research Institute, Woolloongabba, QLD 4102, Australia; (A.K.); (R.L.); (M.M.); (I.H.F.)
- QIMR Berghofer Medical Research Institute, Herston, Brisbane, QLD 4006, Australia; (A.M.); (C.M.K.); (T.S.)
- The University of Queensland Centre for Clinical Research, Faculty of Medicine, The University of Queensland, Herston, QLD 4006, Australia
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21
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Giri R, Hoedt EC, Khushi S, Salim AA, Bergot AS, Schreiber V, Thomas R, McGuckin MA, Florin TH, Morrison M, Capon RJ, Ó Cuív P, Begun J. Secreted NF-κB suppressive microbial metabolites modulate gut inflammation. Cell Rep 2022; 39:110646. [PMID: 35417687 DOI: 10.1016/j.celrep.2022.110646] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2021] [Revised: 01/24/2022] [Accepted: 03/16/2022] [Indexed: 12/27/2022] Open
Abstract
Emerging evidence suggests that microbiome-host crosstalk regulates intestinal immune activity and predisposition to inflammatory bowel disease (IBD). NF-κB is a master regulator of immune function and a validated target for the treatment of IBD. Here, we identify five Clostridium strains that suppress immune-mediated NF-κB activation in epithelial cell lines, PBMCs, and gut epithelial organoids from healthy human subjects and patients with IBD. Cell-free culture supernatant from Clostridium bolteae AHG0001 strain, but not the reference C. bolteae BAA-613 strain, suppresses inflammatory responses and endoplasmic reticulum stress in gut epithelial organoids derived from Winnie mice. The in vivo responses to Clostridium bolteae AHG0001 and BAA-613 mirror the in vitro activity. Thus, using our in vitro screening of bacteria capable of suppressing NF-κB in the context of IBD and using an ex vivo organoid-based approach, we identify a strain capable of alleviating colitis in a relevant pre-clinical animal model of IBD.
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Affiliation(s)
- Rabina Giri
- Mater Research Institute - The University of Queensland, Translational Research Institute, Brisbane, QLD 4102, Australia; Faculty of Medicine, The University of Queensland, St. Lucia, QLD 4072, Australia
| | - Emily C Hoedt
- Faculty of Medicine, The University of Queensland, St. Lucia, QLD 4072, Australia; The University of Queensland Diamantina Institute, The University of Queensland, Translational Research Institute, Brisbane, QLD 4102, Australia
| | - Shamsunnahar Khushi
- The Institute for Molecular Bioscience, The University of Queensland, Brisbane, QLD 4072, Australia
| | - Angela A Salim
- The Institute for Molecular Bioscience, The University of Queensland, Brisbane, QLD 4072, Australia
| | - Anne-Sophie Bergot
- The University of Queensland Diamantina Institute, The University of Queensland, Translational Research Institute, Brisbane, QLD 4102, Australia
| | - Veronika Schreiber
- Mater Research Institute - The University of Queensland, Translational Research Institute, Brisbane, QLD 4102, Australia
| | - Ranjeny Thomas
- The University of Queensland Diamantina Institute, The University of Queensland, Translational Research Institute, Brisbane, QLD 4102, Australia
| | - Michael A McGuckin
- Mater Research Institute - The University of Queensland, Translational Research Institute, Brisbane, QLD 4102, Australia; Faculty of Medicine, The University of Queensland, St. Lucia, QLD 4072, Australia
| | - Timothy H Florin
- Mater Research Institute - The University of Queensland, Translational Research Institute, Brisbane, QLD 4102, Australia
| | - Mark Morrison
- Faculty of Medicine, The University of Queensland, St. Lucia, QLD 4072, Australia; The University of Queensland Diamantina Institute, The University of Queensland, Translational Research Institute, Brisbane, QLD 4102, Australia
| | - Robert J Capon
- The Institute for Molecular Bioscience, The University of Queensland, Brisbane, QLD 4072, Australia
| | - Páraic Ó Cuív
- Faculty of Medicine, The University of Queensland, St. Lucia, QLD 4072, Australia; The University of Queensland Diamantina Institute, The University of Queensland, Translational Research Institute, Brisbane, QLD 4102, Australia.
| | - Jakob Begun
- Mater Research Institute - The University of Queensland, Translational Research Institute, Brisbane, QLD 4102, Australia; Faculty of Medicine, The University of Queensland, St. Lucia, QLD 4072, Australia.
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22
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Chan S, Hawley CM, Pascoe EM, Cao C, Campbell SB, Campbell KL, Francis RS, Hale R, Isbel NM, Morrison M, Johnson DW. Journal of Renal Nutrition Prebiotic supplementation in kidney transplant recipients for preventing infections and gastrointestinal upset: a randomized controlled feasibility study. J Ren Nutr 2022; 32:718-725. [DOI: 10.1053/j.jrn.2022.02.006] [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] [Received: 11/30/2021] [Revised: 02/10/2022] [Accepted: 02/20/2022] [Indexed: 11/11/2022] Open
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23
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Beck ES, Maranzano J, Luciano NJ, Parvathaneni P, Filippini S, Morrison M, Suto DJ, Wu T, van Gelderen P, de Zwart JA, Antel S, Fetco D, Ohayon J, Andrada F, Mina Y, Thomas C, Jacobson S, Duyn J, Cortese I, Narayanan S, Nair G, Sati P, Reich DS. Cortical lesion hotspots and association of subpial lesions with disability in multiple sclerosis. Mult Scler 2022; 28:1351-1363. [PMID: 35142571 DOI: 10.1177/13524585211069167] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
BACKGROUND Dramatic improvements in visualization of cortical (especially subpial) multiple sclerosis (MS) lesions allow assessment of impact on clinical course. OBJECTIVE Characterize cortical lesions by 7 tesla (T) T2*-/T1-weighted magnetic resonance imaging (MRI); determine relationship with other MS pathology and contribution to disability. METHODS Sixty-four adults with MS (45 relapsing-remitting/19 progressive) underwent 3 T brain/spine MRI, 7 T brain MRI, and clinical testing. RESULTS Cortical lesions were found in 94% (progressive: median 56/range 2-203; relapsing-remitting: 15/0-168; p = 0.004). Lesion distribution across 50 cortical regions was nonuniform (p = 0.006), with highest lesion burden in supplementary motor cortex and highest prevalence in superior frontal gyrus. Leukocortical and white matter lesion volumes were strongly correlated (r = 0.58, p < 0.0001), while subpial and white matter lesion volumes were moderately correlated (r = 0.30, p = 0.002). Leukocortical (p = 0.02) but not subpial lesions (p = 0.40) were correlated with paramagnetic rim lesions; both were correlated with spinal cord lesions (p = 0.01). Cortical lesion volumes (total and subtypes) were correlated with expanded disability status scale, 25-foot timed walk, nine-hole peg test, and symbol digit modality test scores. CONCLUSION Cortical lesions are highly prevalent and are associated with disability and progressive disease. Subpial lesion burden is not strongly correlated with white matter lesions, suggesting differences in inflammation and repair mechanisms.
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Affiliation(s)
- Erin S Beck
- National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD, USA; Department of Neurology, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Josefina Maranzano
- McConnell Brain Imaging Centre, Department of Neurology and Neurosurgery, Montreal Neurological Institute and Hospital, McGill University, Montreal, QC, Canada; Department of Anatomy, University of Quebec in Trois-Rivières, Trois-Rivières, QC, Canada
| | - Nicholas J Luciano
- National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD, USA
| | - Prasanna Parvathaneni
- National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD, USA
| | - Stefano Filippini
- National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD, USA.,Department of Neurosciences, Drug and Child Health, University of Florence, Florence, Italy
| | - Mark Morrison
- National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD, USA
| | - Daniel J Suto
- National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD, USA
| | - Tianxia Wu
- National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD, USA
| | - Peter van Gelderen
- National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD, USA
| | - Jacco A de Zwart
- National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD, USA
| | - Samson Antel
- McConnell Brain Imaging Centre, Department of Neurology and Neurosurgery, Montreal Neurological Institute and Hospital, McGill University, Montreal, QC, Canada
| | - Dumitru Fetco
- McConnell Brain Imaging Centre, Department of Neurology and Neurosurgery, Montreal Neurological Institute and Hospital, McGill University, Montreal, QC, Canada
| | - Joan Ohayon
- National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD, USA
| | - Frances Andrada
- National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD, USA
| | - Yair Mina
- National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD, USA.,Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Chevaz Thomas
- National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD, USA
| | - Steve Jacobson
- National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD, USA
| | - Jeff Duyn
- National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD, USA
| | - Irene Cortese
- National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD, USA
| | - Sridar Narayanan
- McConnell Brain Imaging Centre, Department of Neurology and Neurosurgery, Montreal Neurological Institute and Hospital, McGill University, Montreal, QC, Canada
| | - Govind Nair
- National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD, USA
| | - Pascal Sati
- National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD, USA.,Department of Neurology, Cedars-Sinai Medical Center, Los Angeles, CA, USA
| | - Daniel S Reich
- National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD, USA
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Krueger A, Zaugg J, Lachner N, Bialasiewicz S, Lin LL, Gabizon S, Sobarun P, Morrison M, Soyer HP, Hugenholtz P, Frazer IH. Changes in the skin microbiome associated with squamous cell carcinoma in transplant recipients. ISME Commun 2022; 2:13. [PMID: 37938715 PMCID: PMC9723734 DOI: 10.1038/s43705-022-00095-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/04/2021] [Revised: 01/11/2022] [Accepted: 01/18/2022] [Indexed: 05/10/2023]
Abstract
Actinic keratoses (AK) arise in severely photo-damaged skin and can progress to squamous cell carcinomas (SCC). AK and SCC are common in Caucasian populations, and immunosuppressed individuals have a markedly higher risk of developing SCC. An overabundance of Staphylococcus aureus has been reported in AK and SCC lesions of immunocompetent individuals, however, the AK/SCC microbiome in immunosuppressed cohorts has not been investigated. Here, the microbial profile and bacterial load of AK, SCC and control skin swabs from 32 immunosuppressed organ transplant recipients were characterised via SSU rRNA gene sequencing and qPCR, and compared to a previously described immunocompetent cohort. Although the taxonomic composition of skin swab samples was mostly subject-specific, significant differences were observed between control skin, AK, and SCC in both cohorts. Surface bacterial load was increased and alpha diversity decreased in AK and SCC compared to control skin due to an increased abundance of Staphylococcus species and relative decrease of skin commensals. Staphylococcus epidermidis predominated on SCC from transplant recipients in contrast to SCC of immunocompetent subjects dominated by S. aureus. In conclusion, AK and SCC of immunosuppressed and immunocompetent subjects present with distinctive microbial dysbioses, which may be relevant to SCC pathogenesis and progression.
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Affiliation(s)
- Annika Krueger
- The University of Queensland Diamantina Institute, Faculty of Medicine, University of Queensland, Translational Research Institute, Woolloongabba, QLD, Australia
| | - Julian Zaugg
- Australian Centre for Ecogenomics, University of Queensland, St Lucia, QLD, Australia
| | - Nancy Lachner
- Australian Centre for Ecogenomics, University of Queensland, St Lucia, QLD, Australia
| | - Seweryn Bialasiewicz
- Australian Centre for Ecogenomics, University of Queensland, St Lucia, QLD, Australia
- Queensland Paediatric Infectious Diseases Laboratory, Children's Health Queensland, South Brisbane, QLD, Australia
| | - Lynlee L Lin
- The University of Queensland Diamantina Institute, The University of Queensland, Dermatology Research Centre, Brisbane, QLD, Australia
| | - Sharon Gabizon
- The University of Queensland Diamantina Institute, The University of Queensland, Dermatology Research Centre, Brisbane, QLD, Australia
- Dermatology Department, Princess Alexandra Hospital, Brisbane, QLD, Australia
| | - Priyamvada Sobarun
- The University of Queensland Diamantina Institute, The University of Queensland, Dermatology Research Centre, Brisbane, QLD, Australia
- Dermatology Department, Princess Alexandra Hospital, Brisbane, QLD, Australia
| | - Mark Morrison
- The University of Queensland Diamantina Institute, Faculty of Medicine, University of Queensland, Translational Research Institute, Woolloongabba, QLD, Australia
| | - H Peter Soyer
- The University of Queensland Diamantina Institute, The University of Queensland, Dermatology Research Centre, Brisbane, QLD, Australia
- Dermatology Department, Princess Alexandra Hospital, Brisbane, QLD, Australia
| | - Philip Hugenholtz
- Australian Centre for Ecogenomics, University of Queensland, St Lucia, QLD, Australia
| | - Ian H Frazer
- The University of Queensland Diamantina Institute, Faculty of Medicine, University of Queensland, Translational Research Institute, Woolloongabba, QLD, Australia.
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Krueger A, Zaugg J, Chisholm S, Linedale R, Lachner N, Teoh SM, Tuong ZK, Lukowski SW, Morrison M, Soyer HP, Hugenholtz P, Hill MM, Frazer IH. Secreted Toxins From Staphylococcus aureus Strains Isolated From Keratinocyte Skin Cancers Mediate Pro-tumorigenic Inflammatory Responses in the Skin. Front Microbiol 2022; 12:789042. [PMID: 35145494 PMCID: PMC8822148 DOI: 10.3389/fmicb.2021.789042] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2021] [Accepted: 12/08/2021] [Indexed: 12/27/2022] Open
Abstract
Squamous cell carcinoma (SCC) is a common type of skin cancer that typically arises from premalignant precursor lesions named actinic keratoses (AK). Chronic inflammation is a well-known promoter of skin cancer progression. AK and SCC have been associated with an overabundance of the bacterium Staphylococcus aureus (S. aureus). Certain secreted products from S. aureus are known to promote cutaneous pro-inflammatory responses; however, not all S. aureus strains produce these. As inflammation plays a key role in SCC development, we investigated the pro-inflammatory potential and toxin secretion profiles of skin-cancer associated S. aureus. Sterile culture supernatants (“secretomes”) of S. aureus clinical strains isolated from AK and SCC were applied to human keratinocytes in vitro. Some S. aureus secretomes induced keratinocytes to overexpress inflammatory mediators that have been linked to skin carcinogenesis, including IL-6, IL-8, and TNFα. A large phenotypic variation between the tested clinical strains was observed. Strains that are highly pro-inflammatory in vitro also caused more pronounced skin inflammation in mice. Proteomic characterization of S. aureus secretomes using mass spectrometry established that specific S. aureus enzymes and cytolytic toxins, including hemolysins, phenol-soluble modulins, and serine proteases, as well as currently uncharacterized proteins, correlate with the pro-inflammatory S. aureus phenotype. This study is the first to describe the toxin secretion profiles of AK and SCC-associated S. aureus, and their potential to induce a pro-inflammatory environment in the skin. Further studies are needed to establish whether these S. aureus products promote SCC development by mediating chronic inflammation.
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Affiliation(s)
- Annika Krueger
- Faculty of Medicine, The University of Queensland Diamantina Institute, Translational Research Institute, The University of Queensland, Woolloongabba, QLD, Australia
| | - Julian Zaugg
- Australian Centre for Ecogenomics, School of Chemistry and Molecular Biosciences, The University of Queensland, St Lucia, QLD, Australia
| | - Sarah Chisholm
- Faculty of Medicine, The University of Queensland Diamantina Institute, Translational Research Institute, The University of Queensland, Woolloongabba, QLD, Australia
| | - Richard Linedale
- Faculty of Medicine, The University of Queensland Diamantina Institute, Translational Research Institute, The University of Queensland, Woolloongabba, QLD, Australia
| | - Nancy Lachner
- Australian Centre for Ecogenomics, School of Chemistry and Molecular Biosciences, The University of Queensland, St Lucia, QLD, Australia
| | - Siok Min Teoh
- Faculty of Medicine, The University of Queensland Diamantina Institute, Translational Research Institute, The University of Queensland, Woolloongabba, QLD, Australia
| | - Zewen K. Tuong
- Faculty of Medicine, The University of Queensland Diamantina Institute, Translational Research Institute, The University of Queensland, Woolloongabba, QLD, Australia
- Department of Medicine, University of Cambridge School of Clinical Medicine, Cambridge, United Kingdom
- Cellular Genetics, Wellcome Sanger Institute, Hinxton, United Kingdom
| | - Samuel W. Lukowski
- The Institute for Molecular Bioscience, The University of Queensland, St Lucia, QLD, Australia
| | - Mark Morrison
- Faculty of Medicine, The University of Queensland Diamantina Institute, Translational Research Institute, The University of Queensland, Woolloongabba, QLD, Australia
| | - H. Peter Soyer
- Dermatology Research Centre, The University of Queensland Diamantina Institute, The University of Queensland, Brisbane, QLD, Australia
- Dermatology Department, Princess Alexandra Hospital, Brisbane, QLD, Australia
| | - Philip Hugenholtz
- Australian Centre for Ecogenomics, School of Chemistry and Molecular Biosciences, The University of Queensland, St Lucia, QLD, Australia
| | - Michelle M. Hill
- Faculty of Medicine, The University of Queensland Diamantina Institute, Translational Research Institute, The University of Queensland, Woolloongabba, QLD, Australia
- QIMR Berghofer Medical Research Institute, Brisbane, QLD, Australia
- The University of Queensland Centre for Clinical Research, Faculty of Medicine, The University of Queensland, Brisbane, QLD, Australia
| | - Ian H. Frazer
- Faculty of Medicine, The University of Queensland Diamantina Institute, Translational Research Institute, The University of Queensland, Woolloongabba, QLD, Australia
- *Correspondence: Ian H. Frazer,
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26
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Gandhi A, Shah A, Jones MP, Koloski N, Talley NJ, Morrison M, Holtmann G. Methane positive small intestinal bacterial overgrowth in inflammatory bowel disease and irritable bowel syndrome: A systematic review and meta-analysis. Gut Microbes 2022; 13:1933313. [PMID: 34190027 PMCID: PMC8253120 DOI: 10.1080/19490976.2021.1933313] [Citation(s) in RCA: 29] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
Abstract
Several studies reported a potential role of methane producing archaea in the pathophysiology of irritable bowel syndrome (IBS) and inflammatory bowel disease (IBD). We conducted a systematic review and meta-analysis to assess the prevalence of methane positive small intestinal bacterial overgrowth (SIBO) in IBS and IBD compared with controls. MEDLINE (PubMed) and Embase electronic databases were searched from inception until March 2021 for case-control and prevalence studies reporting SIBO in IBS and IBD. We extracted data from published studies and calculated pooled prevalence of SIBO in IBS or IBD, odds ratios (OR), and 95% CIs, utilizing a random effects model. The final dataset included 17 independent studies assessing the prevalence of methane positive SIBO in 1,653 IBS-patients and 713 controls, and 7 studies assessing the prevalence of methane positive SIBO in 626 IBD-patients and 497 controls, all utilizing breath test for SIBO diagnosis. Prevalence of methane positive SIBO in IBS and IBD was 25.0% (95% CI 18.8-32.4) and 5.6% (95% CI 2.6-11.8), respectively. Methane positive SIBO in IBS was not increased compared to controls (OR = 1.2, 95% CI 0.8-1.7, P = .37) but was significantly more prevalent in IBS-C as compared to IBS-D (OR = 3.1, 95% CI 1.7-5.6, P = .0001). The prevalence of methane-positive SIBO in patients with IBD was 3-fold lower at 7.4% (95% CI 5.4-9.8) compared to 23.5% (95% CI 19.8-27.5) in controls. The prevalence of methane positive SIBO was significantly lower in Crohn's disease as compared to ulcerative colitis, (5.3%, 95% CI 3.0-8.5 vs. 20.2%, 95% CI 12.8-29.4). This systematic review and meta-analysis suggests methane positivity on breath testing is positively associated with IBS-C and inversely with IBD. However, the quality of evidence is low largely due to clinical heterogeneity of the studies. Thus, causality is uncertain and further studies are required.
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Affiliation(s)
- Arjun Gandhi
- Faculty of Medicine, The University of Queensland, Queensland, Australia,Department of Gastroenterology & Hepatology, Princess Alexandra Hospital, Brisbane, Queensland, Australia
| | - Ayesha Shah
- Faculty of Medicine, The University of Queensland, Queensland, Australia,Department of Gastroenterology & Hepatology, Princess Alexandra Hospital, Brisbane, Queensland, Australia,Translational Research Institute, Brisbane, Queensland, Australia
| | - Michael P. Jones
- Department of Psychology, Macquarie University, Sydney, New South Wales, Australia
| | - Natasha Koloski
- Faculty of Medicine, The University of Queensland, Queensland, Australia,Department of Gastroenterology & Hepatology, Princess Alexandra Hospital, Brisbane, Queensland, Australia,Translational Research Institute, Brisbane, Queensland, Australia
| | - Nicholas J. Talley
- Faculty of Health and Medicine, The University of Newcastle, Newcastle, Australia
| | - Mark Morrison
- Faculty of Medicine, The University of Queensland, Queensland, Australia,Department of Gastroenterology & Hepatology, Princess Alexandra Hospital, Brisbane, Queensland, Australia,University of Queensland, Diamantina Institute, Brisbane, Queensland, Australia
| | - Gerald Holtmann
- Faculty of Medicine, The University of Queensland, Queensland, Australia,Department of Gastroenterology & Hepatology, Princess Alexandra Hospital, Brisbane, Queensland, Australia,Translational Research Institute, Brisbane, Queensland, Australia,CONTACT Gerald Holtmann Brisbane Department of Gastroenterology and Hepatology & University of Queensland Ipswich Road, Woolloongabba, Queensland, Australia
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27
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Shah A, Pakneeshan S, Jones MP, Koloski N, Callaghan G, Morrison M, Holtmann G. How frequent are vancomycin-resistant enterococci in patients with primary sclerosing cholangitis and ulcerative colitis treated with oral vancomycin? Indian J Gastroenterol 2022; 41:519-524. [PMID: 36217097 PMCID: PMC9715441 DOI: 10.1007/s12664-022-01286-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/11/2022] [Accepted: 07/19/2022] [Indexed: 02/04/2023]
Abstract
In patients with primary sclerosing cholangitis (PSC), antimicrobial therapy with oral vancomycin (OV) is increasingly used to prevent progression of the liver disease and control concomitant ulcerative colitis (UC); however, there are concerns regarding the risk of development of vancomycin-resistant enterococci (VRE). Thus, we aimed to determine the incidence of VRE in PSC-UC patients. We conducted a retrospective study of PSC-UC patients, treated with OV at the Department of Gastroenterology at the Princess Alexandra Hospital. VRE testing was performed utilizing rectal swabs. We included 7 PSC-UC patients (age 22-53 years, 2 females) treated with OV with daily dose ranging from 250 to 1500 mg. All patients were treated for at least 6 months with OV (range 9-31 months, mean 32.1 months). All patients achieved complete clinical remission of the UC, with mean reduction of fecal calprotectin by 634 μg/mg (87.3%), mean reduction in the C-reactive protein by 21.9 mg/L (74.2%), and mean reduction in the total Mayo score by 9.3 (93.3%). With regard to the liver parameters, mean improvement in alkaline phosphatase enzyme and total bilirubin was -48.7 U/L (-19.7%) and -2.7 mg/dL (-19.6%), respectively. No patient treated with OV developed VRE or reported any adverse events. This cohort study including PSC-UC patients did not provide evidence for development of VRE, while treatment with vancomycin was associated with clinical and endoscopic remission of the UC. Larger, prospective trials are required to define the efficacy and safety of antimicrobial therapy in PSC-UC, while the risk of VRE appears small.
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Affiliation(s)
- Ayesha Shah
- Faculty of Medicine and Faculty of Health and Behavioral Sciences, The University of Queensland, Brisbane, QLD, Australia
- Department of Gastroenterology and Hepatology, Princess Alexandra Hospital, Ipswich Road, Woolloongabba, Brisbane, QLD, Australia
- AGIRA (Australian Gastrointestinal Research Alliance) and the NHMRC Centre of Research Excellence in Digestive Health, Brisbane, Australia
| | - Sahar Pakneeshan
- Faculty of Medicine and Faculty of Health and Behavioral Sciences, The University of Queensland, Brisbane, QLD, Australia
- Department of Gastroenterology and Hepatology, Princess Alexandra Hospital, Ipswich Road, Woolloongabba, Brisbane, QLD, Australia
| | - Michael P Jones
- AGIRA (Australian Gastrointestinal Research Alliance) and the NHMRC Centre of Research Excellence in Digestive Health, Brisbane, Australia
- Department of Psychology, Macquarie University, Sydney, NSW, Australia
| | - Natasha Koloski
- Faculty of Medicine and Faculty of Health and Behavioral Sciences, The University of Queensland, Brisbane, QLD, Australia
- Department of Gastroenterology and Hepatology, Princess Alexandra Hospital, Ipswich Road, Woolloongabba, Brisbane, QLD, Australia
- AGIRA (Australian Gastrointestinal Research Alliance) and the NHMRC Centre of Research Excellence in Digestive Health, Brisbane, Australia
| | - Gavin Callaghan
- Department of Gastroenterology and Hepatology, Princess Alexandra Hospital, Ipswich Road, Woolloongabba, Brisbane, QLD, Australia
| | - Mark Morrison
- Department of Gastroenterology and Hepatology, Princess Alexandra Hospital, Ipswich Road, Woolloongabba, Brisbane, QLD, Australia
- AGIRA (Australian Gastrointestinal Research Alliance) and the NHMRC Centre of Research Excellence in Digestive Health, Brisbane, Australia
- University of Queensland Diamantina Institute, Woolloongabba, QLD, Australia
| | - Gerald Holtmann
- Faculty of Medicine and Faculty of Health and Behavioral Sciences, The University of Queensland, Brisbane, QLD, Australia.
- Department of Gastroenterology and Hepatology, Princess Alexandra Hospital, Ipswich Road, Woolloongabba, Brisbane, QLD, Australia.
- AGIRA (Australian Gastrointestinal Research Alliance) and the NHMRC Centre of Research Excellence in Digestive Health, Brisbane, Australia.
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28
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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.
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McFarlane C, Krishnasamy R, Stanton T, Savill E, Snelson M, Mihala G, Morrison M, Johnson DW, Campbell KL. Diet Quality and Protein-Bound Uraemic Toxins: Investigation of Novel Risk Factors and the Role of Microbiome in Chronic Kidney Disease. J Ren Nutr 2021; 32:542-551. [PMID: 34776340 DOI: 10.1053/j.jrn.2021.10.003] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2020] [Revised: 09/16/2021] [Accepted: 10/03/2021] [Indexed: 02/06/2023] Open
Abstract
OBJECTIVE This study aims to explore the associations between diet quality, uraemic toxins, and gastrointestinal microbiota in the chronic kidney disease (CKD) population. METHODS This is a baseline cross-sectional study of adults with CKD participating in a randomized controlled trial of prebiotic and probiotic supplementation. Dietary intake was measured using a seven-day diet history method, administered by a specialist dietitian. Diet quality was assessed using plant-based diet index (PDI) (overall PDI, healthy PDI, and unhealthy PDI), food group analysis, protein intake, fiber intake, and dietary protein-to-fiber ratio. Serum uraemic toxins (free and total; indoxyl sulfate and p-cresyl sulfate) were determined by ultraperformance liquid chromatography. Gastrointestinal microbiota richness, diversity, composition, and functional capacity were analyzed via metagenomic sequencing. RESULTS Sixty-eight adults [median age: 70 (interquartile range: 58-75) years, 66% male] with an estimated glomerular filtration rate of 34 ± 11 mL/min/1.73 m2 were included, with 40 participants completing the optional fecal substudy. Dietary fiber intake was associated with lower levels of total indoxyl sulfate, whereas the healthy plant-based diet index was associated with lower levels of free p-cresyl sulfate. A higher protein-to-fiber ratio was associated with an increased relative abundance of unclassified members of order Oscillospirales. Intake of vegetables and whole grains was correlated with Subdoligranulum formicile, whereas an unclassified Prevotella species was correlated with potatoes and food items considered discretionary, including sweet drinks, sweet desserts, and animal fats. CONCLUSIONS Diet quality may influence uraemic toxin generation and gut microbiota diversity, composition, and function in adults with CKD. Well-designed dietary intervention studies targeting the production of uraemic toxins and exploring the impact on gut microbiome are warranted in the CKD population.
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Affiliation(s)
- Catherine McFarlane
- School of Medicine, University of Queensland, Brisbane, Queensland, Australia; Sunshine Coast University Hospital, Birtinya, Queensland, Australia.
| | - Rathika Krishnasamy
- Sunshine Coast University Hospital, Birtinya, Queensland, Australia; Australasian Kidney Trials Network, University of Queensland, Brisbane, Queensland, Australia
| | - Tony Stanton
- Sunshine Coast University Hospital, Birtinya, Queensland, Australia
| | - Emma Savill
- Sunshine Coast University Hospital, Birtinya, Queensland, Australia
| | - Matthew Snelson
- Department of Diabetes, Monash University, Victoria, Australia
| | - Gabor Mihala
- Menzies Health Institute Queensland, Griffith University, Nathan, Queensland, Australia; Centre for Applied Health Economics, Griffith University, Nathan, Queensland, Australia
| | - Mark Morrison
- Diamantina Institute, Faculty of Medicine, University of Queensland, Woolloongabba, Queensland, Australia
| | - David W Johnson
- Australasian Kidney Trials Network, University of Queensland, Brisbane, Queensland, Australia; Department of Nephrology, Princess Alexandra Hospital, Brisbane, Queensland, Australia
| | - Katrina L Campbell
- School of Medicine, University of Queensland, Brisbane, Queensland, Australia; Australasian Kidney Trials Network, University of Queensland, Brisbane, Queensland, Australia; Menzies Health Institute Queensland, Griffith University, Nathan, Queensland, Australia
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30
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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.
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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
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Liu J, Beck ES, Filippini S, van Gelderen P, de Zwart JA, Norato G, Sati P, Al-Louzi O, Kolb H, Donadieu M, Morrison M, Duyn JH, Reich DS. Navigator-Guided Motion and B0 Correction of T2*-Weighted Magnetic Resonance Imaging Improves Multiple Sclerosis Cortical Lesion Detection. Invest Radiol 2021; 56:409-416. [PMID: 34086012 PMCID: PMC8269363 DOI: 10.1097/rli.0000000000000754] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
BACKGROUND Cortical lesions are common in multiple sclerosis (MS). T2*-weighted (T2*w) imaging at 7 T is relatively sensitive for cortical lesions, but quality is often compromised by motion and main magnetic field (B0) fluctuations. PURPOSE The aim of this study was to determine whether motion and B0 correction with a navigator-guided gradient-recalled echo sequence can improve cortical lesion detection in T2*w magnetic resonance imaging. MATERIALS AND METHODS In this prospective study, a gradient-recalled echo sequence incorporating a navigator allowing for motion and B0 field correction was applied to collect T2*w images at 7 T from adults with MS between August 2019 and March 2020. T2*-weighted images were acquired in 1 to 3 partially overlapping scans per individual and were reconstructed using global average B0 correction ("uncorrected") or motion correction and spatially linear B0 correction ("corrected"). Image quality rating and manual segmentation of cortical lesions were performed on uncorrected and corrected images. Lesions seen on a single scan were retrospectively evaluated on the complementary scan. The association of cortical lesions with clinical disability was assessed. Mixed models were used to determine the effect of correction on lesion detection as well as on the relationship between disability and lesion count. RESULTS A total of 22 T2*w scans were performed on 11 adults with MS (mean [SD] age, 49 [11] years; 8 women). Quality improved for 20 of 22 scans (91%) after correction. A total of 69 cortical lesions were identified on uncorrected images (median per scan, 2; range, 0-11) versus 148 on corrected images (median per scan, 4.5; range, 0-25; rate ratio [RR], 2.1; P < 0.0001). For low-quality uncorrected scans with moderate to severe motion artifact (18/22, 82%), there was an improvement in cortical lesion detection with correction (RR, 2.5; P < 0.0001), whereas there was no significant change in cortical lesion detection for high-quality scans (RR, 1.3; P = 0.43). CONCLUSIONS Navigator-guided motion and B0 correction substantially improves the overall image quality of T2*w magnetic resonance imaging at 7 T and increases its sensitivity for cortical lesions.
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Affiliation(s)
- Jiaen Liu
- Advanced MRI Section, National Institute of Neurological Disorders and Stroke (NINDS), National Institutes of Health (NIH), Bethesda, MD, USA
| | - Erin S Beck
- Translational Neuroradiology Section, NINDS, NIH, Bethesda, MD, USA
| | - Stefano Filippini
- Translational Neuroradiology Section, NINDS, NIH, Bethesda, MD, USA
- Department of Neurosciences, Drug, and Child Health, University of Florence, Florence, Italy
| | - Peter van Gelderen
- Advanced MRI Section, National Institute of Neurological Disorders and Stroke (NINDS), National Institutes of Health (NIH), Bethesda, MD, USA
| | - Jacco A de Zwart
- Advanced MRI Section, National Institute of Neurological Disorders and Stroke (NINDS), National Institutes of Health (NIH), Bethesda, MD, USA
| | - Gina Norato
- Clinical Trials Unit, NINDS, NIH, Bethesda, MD, USA
| | - Pascal Sati
- Translational Neuroradiology Section, NINDS, NIH, Bethesda, MD, USA
- Department of Neurology, Cedars-Sinai Medical Center, Los Angeles, CA, USA
| | - Omar Al-Louzi
- Translational Neuroradiology Section, NINDS, NIH, Bethesda, MD, USA
| | - Hadar Kolb
- Translational Neuroradiology Section, NINDS, NIH, Bethesda, MD, USA
| | - Maxime Donadieu
- Translational Neuroradiology Section, NINDS, NIH, Bethesda, MD, USA
| | - Mark Morrison
- Translational Neuroradiology Section, NINDS, NIH, Bethesda, MD, USA
| | - Jeff H Duyn
- Advanced MRI Section, National Institute of Neurological Disorders and Stroke (NINDS), National Institutes of Health (NIH), Bethesda, MD, USA
| | - Daniel S Reich
- Translational Neuroradiology Section, NINDS, NIH, Bethesda, MD, USA
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McFarlane C, Krishnasamy R, Stanton T, Savill E, Kelly JT, Snelson M, Mihala G, Morrison M, Johnson DW, Campbell KL. MO590GUT HEALTH INTERVENTIONS IN CHRONIC KIDNEY DISEASE: ACCEPTABILITY AND FEASIBILITY OF OF SYNBIOTIC SUPPLEMENTATION. Nephrol Dial Transplant 2021. [DOI: 10.1093/ndt/gfab089.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Background and Aims
Synbiotics, co-administered prebiotics and probiotics, have emerged over the last decade as an innocuous intervention targeting the microbial generation of the uraemic toxins, indoxyl sulphate (IS) and p-cresyl sulphate (PCS). However, most trials to date are of short duration (2-24 weeks). In order to inform translation into clinical practice, it is imperative to consider the efficacy of synbiotic supplementation as a long-term intervention. The aims of this study were to evaluate the feasibility and acceptability (including symptoms and adherence) of long-term synbiotic supplementation in adults with chronic kidney disease (CKD), as well as explore the perspectives of these patients on nutrition supplementation for gut health, including strategies to optimise adherence in practice.
Method
SYNERGY II was a double-blind randomised controlled trial in adults (>18years) with stage 3-4 CKD over 12 months. The intervention comprised of daily prebiotic powder (2 x 10g/day resistant starch) and probiotic supplementation (single sachet of 6g/day multi strain 4.5x1011CFU) or placebo control (waxy maize powder and a sachet of maltodextrin). Adherence to nutrition supplementation was defined as participants consuming >80% of the prescribed sachets/powder. Symptoms were monitored via Gastrointestinal Symptom Rating Scale (GSRS) and Bristol Stool Score (BSS). Semi-structured interviews were conducted in person or by telephone with a sample of 30 participants at the completion of the intervention. The interviews explored experiences and perspectives regarding frequencies, timing and difficulties experienced with each aspect of the intervention and overall perceptions of the intervention as a strategy to improve gut health.
Results
Sixty-eight participants [66% male, median age 70 (IQR 58-75) years] were consented and randomised to either intervention or control groups, with a mean estimated glomerular filtration rate of 34 ± 11 mL/min/1.73m2. A total of 56 participants (82%) completed the 12-month intervention with no differences in withdrawals between groups (p=0.6). One participant from each group withdrew at week 2, citing palatability of the study product as the reason for withdrawal. Overall adherence to study supplementation was excellent in both intervention and placebo groups [median intake 92.1% (85.9-95.2%) placebo versus 89.5% (84.4-94.5%) synbiotic; P=0.4)]. Overall, there was no significant change from baseline to end of study visit for mean BSS (3.6 ± 1.4 to 3.6 ± 1.4 placebo versus 3.6 ± 1.1 to 4.1 ± 1.2 synbiotic, P=0.13), mean bowel movements (1.3 ± 0.6 to 1.6 ± 0.9 placebo versus 1.3 ± 0.6 to 1.8 ± 1.0 synbiotic, P=0.70) or GSRS [1.3 (1.1 - 1.9) to 1.3 (1.1 - 1.5) placebo versus 1.1 (1.1 - 1.5) to 1.3 (1.1 - 1.5) synbiotic, P=0.83]. Acceptability components described by participants were appreciating convenience and improving health and well-being. Participants discussed the following feasibility components: integrating easily into lifestyle and social accountability. Tablets or capsules were the preferred supplement formulation with a probiotic drink made from a SCOBY (synbiotic culture of bacteria and yeast) the least preferred.
Conclusion
Among adults with stage 3-4 CKD, synbiotic supplementation is a well-tolerated and acceptable form of nutrition supplementation. People with CKD would prefer nutrition supplements to be formulated as a tablet or capsule, which is an important consideration when translating into clinical practice.
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Affiliation(s)
- Catherine McFarlane
- Sunshine Coast University Hospital, Birtinya, Australia
- The University of Queensland, School of Medicine, Saint Lucia, Australia
| | - Rathika Krishnasamy
- Sunshine Coast University Hospital, Birtinya, Australia
- Australasian Kidney Trials Network (AKTN), Woolloongabba, Australia
| | - Tony Stanton
- Sunshine Coast University Hospital, Birtinya, Australia
| | - Emma Savill
- Sunshine Coast University Hospital, Birtinya, Australia
| | - Jaimon T Kelly
- Menzies Health Institute Queensland, Southport, Australia
| | - Matthew Snelson
- Monash University, Department of Diabetes, Clayton, Australia
| | - Gabor Mihala
- Menzies Health Institute Queensland, Southport, Australia
- Griffith University, Nathan Campus, Centre for Applied Health Economics, Nathan, Australia
| | | | - David W Johnson
- Australasian Kidney Trials Network (AKTN), Woolloongabba, Australia
- Princess Alexandra Hospital, Department of Nephrology, Woolloongabba, Australia
| | - Katrina L Campbell
- The University of Queensland, School of Medicine, Saint Lucia, Australia
- Australasian Kidney Trials Network (AKTN), Woolloongabba, Australia
- Menzies Health Institute Queensland, Southport, Australia
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McFarlane C, Krishnasamy R, Stanton T, Savill E, Snelson M, Mihala G, Morrison M, Johnson DW, Campbell KL. FC 082DIET QUALITY, PROTEIN-BOUND URAEMIC TOXINS AND GASTROINTESTINAL MICROBIOME IN CHRONIC KIDNEY DISEASE. Nephrol Dial Transplant 2021. [DOI: 10.1093/ndt/gfab139.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Background and Aims
Individuals with chronic kidney disease (CKD) have significantly increased risk of cardiovascular mortality which is only partially explained by Framingham risk factors. There is a growing body of evidence linking the gut-derived uraemic toxins indoxyl sulphate (IS) and p-cresyl sulphate (PCS) with accelerated kidney disease progression and cardiovascular burden in CKD. Whilst the effect of specific nutrients on uraemic toxin generation has been explored, few studies have characterised the impact of diet quality on the gastrointestinal microbiome in the CKD population. This study aims to explore the associations between dietary quality, protein-bound uraemic toxins and gastrointestinal microbiome in adults with CKD.
Method
This was a baseline cross-sectional study of adults with stage 3 to 4 CKD who were enrolled in a randomised controlled trial of prebiotic and probiotic supplementation. Habitual dietary intake was measured using a 7-day diet history method by a specialist Dietitian. Diet quality was assessed using food group analysis; protein intake, fibre intake, dietary protein:fibre ratio and adherence to plant-based diet index (PDI) (overall PDI, healthy PDI, unhealthy PDI). Serum uraemic toxins (free and total; IS and PCS) were determined by ultra-performance liquid chromatography. Metagenomic sequencing was used to determine gastrointestinal microbiota richness, diversity, composition and functional capacity.
Results
There were 68 CKD patients [66% male, median age 70 (IQR 58-75) years] with a mean estimated glomerular filtration rate of 34 ± 11 mL/min/1.73m2. Greater adherence to a hPDI was associated with lower levels of free PCS [-0.021 µmol/L (95% CI -0.042 to -0.001)], while a higher intake of dietary fibre intake was associated with lower levels of free IS [-0.022 µmol/L (95% CI -0.043 to -0.001)]. Compositionally, the gastrointestinal microbiota of this cohort was dominated by members of the phyla Firmicutes and Bacteroidetes. Supervised analysis at the species level demonstrated that 21% of variance in gastrointestinal microbial composition could be attributed to protein:fibre ratio (F=1.27, p=0.04). Further, a higher protein:fibre ratio was associated with an increased relative abundance of unclassified members of order Oscillospirales. Subdoligranulum formicile was correlated with dietary intake of vegetables and wholegrains while an unclassified Prevotella species was correlated with food items considered discretionary including sweet drinks, sweet desserts, animal fats and potatoes.
Conclusion
The study suggests that habitual diets that are higher in fibre and plant-based foods may positively influence uraemic toxin levels and gut microbiota diversity and composition in adults with CKD. These findings provide rationale for well-designed dietary intervention studies targeting the production of uraemic toxins and exploring the impact on gut microbiome in the CKD population.
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Affiliation(s)
- Catherine McFarlane
- University of Queensland, School of Medicine, Brisbane, Australia
- Sunshine Coast University Hospital, Birtinya, Australia
| | - Rathika Krishnasamy
- Sunshine Coast University Hospital, Birtinya, Australia
- Australasian Kidney Trials Network, University of Queensland, Brisbane, Australia
| | - Tony Stanton
- Sunshine Coast University Hospital, Birtinya, Australia
| | - Emma Savill
- Sunshine Coast University Hospital, Birtinya, Australia
| | - Matthew Snelson
- Monash University, Department of Diabetes, Melbourne, Australia
| | - Gabor Mihala
- Griffith University, Menzies Health Institute Queensland, Nathan, Australia
- Griffith University, Centre for Applied Health Economics, Nathan, Australia
| | - Mark Morrison
- University of Queensland, Diamantina Institute, Faculty of Medicine, Woolloongabba, Australia
| | - David W Johnson
- Australasian Kidney Trials Network, University of Queensland, Brisbane, Australia
- Princess Alexandra Hospital, Department of Nephrology, Brisbane, Australia
| | - Katrina L Campbell
- University of Queensland, School of Medicine, Brisbane, Australia
- Australasian Kidney Trials Network, University of Queensland, Brisbane, Australia
- Griffith University, Menzies Health Institute Queensland, Nathan, Australia
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Feng G, Mikkelsen D, Hoedt EC, Williams BA, Flanagan BM, Morrison M, Gidley MJ. In vitro fermentation outcomes of arabinoxylan and galactoxyloglucan depend on fecal inoculum more than substrate chemistry. Food Funct 2021; 11:7892-7904. [PMID: 32813756 DOI: 10.1039/d0fo01103g] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Using in vitro fermentation conditions, this study investigated the fermentation characteristics of arabinoxylan (AX) and xyloglucan (XG) with a fecal inoculum that was collected either from humans consuming unrestricted diets or pigs fed a semi-defined diet with cellulose being the sole non-starch polysaccharide for 10 days prior to fecal collection. Metagenomic analysis revealed that microbial communities in the two types of inoculum were distinctively different, which led to distinct fermentation characteristics with the polysaccharides. The microbial communities fermented with the porcine fecal inoculum were clustered according to the fermentation time, while those fermented with the human fecal inoculum were differentiated by the substrates. Using the porcine fecal inoculum, irrespective of the substrates, Prevotella copri and the unclassified lineage rc4-4 were the dominant operational taxonomic units (OTUs) promoted during fermentation. Fermentation of wheat AX (WAX) and galacto-XG (GXG) with the human fecal inoculum, however, promoted different OTUs, except for a shared OTU belonging to Lachnospiraceae. Specifically, WAX promoted the growth of Bacteroides plebeius and a Blautia sp., while GXG promoted an unclassified Bacteroidales, Parabacteroides distasonis, Bacteroides uniformis and Bacteroides sp. 2. These changes in bacterial communities were in accordance with the short chain fatty acid (SCFA) production, where comparable SCFA profiles were obtained from the porcine fecal fermentation while different amounts and proportions of SCFA were acquired from fermentation of WAX and GXG with the human fecal inoculum. Altogether, this study indicated that the starting inoculum composition had a greater effect than polysaccharide chemistry in driving fermentation outcomes.
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Affiliation(s)
- Guangli Feng
- Centre for Nutrition and Food Sciences, Queensland Alliance for Agriculture and Food Innovation, The University of Queensland, Brisbane, 4072, Australia.
| | - Deirdre Mikkelsen
- Centre for Nutrition and Food Sciences, Queensland Alliance for Agriculture and Food Innovation, The University of Queensland, Brisbane, 4072, Australia.
| | - Emily C Hoedt
- Diamantina Institute, Faculty of Medicine, The University of Queensland, Brisbane, 4072, Australia. and APC Microbiome Ireland, University College Cork, Cork, T12, Ireland
| | - Barbara A Williams
- Centre for Nutrition and Food Sciences, Queensland Alliance for Agriculture and Food Innovation, The University of Queensland, Brisbane, 4072, Australia.
| | - Bernadine M Flanagan
- Centre for Nutrition and Food Sciences, Queensland Alliance for Agriculture and Food Innovation, The University of Queensland, Brisbane, 4072, Australia.
| | - Mark Morrison
- Diamantina Institute, Faculty of Medicine, The University of Queensland, Brisbane, 4072, Australia.
| | - Michael J Gidley
- Centre for Nutrition and Food Sciences, Queensland Alliance for Agriculture and Food Innovation, The University of Queensland, Brisbane, 4072, Australia.
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Bui AT, Williams BA, Murtaza N, Lisle A, Mikkelsen D, Morrison M, Gidley MJ. Wheat-based food form has a greater effect than amylose content on fermentation outcomes and microbial community shifts in an in vitro fermentation model. Food Hydrocoll 2021. [DOI: 10.1016/j.foodhyd.2020.106560] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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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]
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Abstract
Tuberculosis (TB) remains an infectious disease of global significance and a
leading cause of death in low- and middle-income countries. Significant effort
has been directed towards understanding Mycobacterium
tuberculosis genomics, virulence, and pathophysiology within the
framework of Koch postulates. More recently, the advent of “-omics” approaches
has broadened our appreciation of how “commensal” microbes have coevolved with
their host and have a central role in shaping health and susceptibility to
disease. It is now clear that there is a diverse repertoire of interactions
between the microbiota and host immune responses that can either sustain or
disrupt homeostasis. In the context of the global efforts to combatting TB, such
findings and knowledge have raised important questions: Does microbiome
composition indicate or determine susceptibility or resistance to
M. tuberculosis infection? Is the
development of active disease or latent infection upon M.
tuberculosis exposure influenced by the microbiome? Does
microbiome composition influence TB therapy outcome and risk of reinfection with
M. tuberculosis? Can the microbiome be
actively managed to reduce risk of M.
tuberculosis infection or recurrence of TB? Here, we
explore these questions with a particular focus on microbiome-immune
interactions that may affect TB susceptibility, manifestation and progression,
the long-term implications of anti-TB therapy, as well as the potential of the
host microbiome as target for clinical manipulation.
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Affiliation(s)
- Giorgia Mori
- The University of Queensland Diamantina Institute, Faculty
of Medicine, The University of Queensland, Brisbane, Australia
| | - Mark Morrison
- The University of Queensland Diamantina Institute, Faculty
of Medicine, The University of Queensland, Brisbane, Australia
| | - Antje Blumenthal
- The University of Queensland Diamantina Institute, Faculty
of Medicine, The University of Queensland, Brisbane, Australia
- * E-mail:
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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
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39
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Holtmann G, Shah A, Morrison M. From trash to gold: gastrointestinal microbiome research in patients with functional gastrointestinal disorders. J Investig Med 2021. [DOI: 10.1136/jim-2021-001903] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Chan S, Morrison M, Hawley CM, Campbell SB, Francis RS, Isbel NM, Pascoe EM, Johnson DW. Characteristics of the gastrointestinal microbiota in paired live kidney donors and recipients. Nephrology (Carlton) 2021; 26:471-478. [PMID: 33501716 DOI: 10.1111/nep.13853] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2020] [Revised: 01/18/2021] [Accepted: 01/21/2021] [Indexed: 01/08/2023]
Abstract
BACKGROUND There are few studies that have examined whether dysbiosis occurs in kidney donors and transplant recipients following kidney transplant surgery. AIM To ascertain whether changes occur in the gastrointestinal microbiota of the kidney donor and recipient following kidney transplantation. METHODS Kidney transplant recipients and their donors were prospectively enrolled in a pilot study to collect one faecal sample prior to, and another faecal sample between four to eight weeks following surgery. Gastrointestinal microbiota richness, Shannon diversity measures and functional assessments of kidney donors and recipients were analysed via metagenomic sequencing. RESULTS The study included 12 donors (median age 56 years, 6 females) and 12 recipients (median age 51 years, 3 females). Donor microbiota showed no significant changes in gastrointestinal microbiota richness, Shannon diversity, or functional assessments before and after nephrectomy. Recipient microbiota was altered post-transplant, reflected in reductions of the mean (±SD) richness values (156 ± 46.5 to 116 ± 38.6, p = 0.002), and Shannon diversity (3.57 ± 0.49 to 3.14 ± 0.52, p = 0.007), and a dramatic increase in Roseburia spp. abundance post-transplant (26-fold increase from 0.16 ± 0.0091 to 4.6 ± 0.3; p = 0.006; FDR = 0.12). Functionally, the post-transplant microbial community shifted towards those taxa using the glycolysis pathway (1.2-fold increase; p = 0.02; FDR = 0.26) for energy metabolism, while those functions involved with reactive oxygen species degradation decreased (2.6-fold; p = 0.006; FDR = 0.14). CONCLUSION Live donor kidney transplantation and standard care post-transplant result in significant alterations in gut microbiota richness, diversity, composition and functional parameters in kidney transplant recipients but not in their kidney donors.
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Affiliation(s)
- Samuel Chan
- Department of Nephrology, Princess Alexandra Hospital, Brisbane, Queensland, Australia.,Australasian Kidney Trials Network, The University of Queensland, Brisbane, Queensland, Australia.,Translational Research Institute, Brisbane, Queensland, Australia
| | - Mark Morrison
- The University of Queensland Diamantina Institute, Faculty of Medicine, University of Queensland, Woolloongabba, Queensland, Australia
| | - Carmel M Hawley
- Department of Nephrology, Princess Alexandra Hospital, Brisbane, Queensland, Australia.,Australasian Kidney Trials Network, The University of Queensland, Brisbane, Queensland, Australia.,Translational Research Institute, Brisbane, Queensland, Australia
| | - Scott B Campbell
- Department of Nephrology, Princess Alexandra Hospital, Brisbane, Queensland, Australia.,Australasian Kidney Trials Network, The University of Queensland, Brisbane, Queensland, Australia
| | - Ross S Francis
- Department of Nephrology, Princess Alexandra Hospital, Brisbane, Queensland, Australia.,Australasian Kidney Trials Network, The University of Queensland, Brisbane, Queensland, Australia
| | - Nicole M Isbel
- Department of Nephrology, Princess Alexandra Hospital, Brisbane, Queensland, Australia.,Australasian Kidney Trials Network, The University of Queensland, Brisbane, Queensland, Australia.,Translational Research Institute, Brisbane, Queensland, Australia
| | - Elaine M Pascoe
- Department of Nephrology, Princess Alexandra Hospital, Brisbane, Queensland, Australia
| | - David W Johnson
- Department of Nephrology, Princess Alexandra Hospital, Brisbane, Queensland, Australia.,Australasian Kidney Trials Network, The University of Queensland, Brisbane, Queensland, Australia.,Translational Research Institute, Brisbane, Queensland, Australia
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Lim Y, Tang KD, Karpe AV, Beale DJ, Totsika M, Kenny L, Morrison M, Punyadeera C. Chemoradiation therapy changes oral microbiome and metabolomic profiles in patients with oral cavity cancer and oropharyngeal cancer. Head Neck 2021; 43:1521-1534. [PMID: 33527579 DOI: 10.1002/hed.26619] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2020] [Accepted: 01/06/2021] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Patients with oral cavity cancer (OCC) and oropharyngeal cancer (OPC) are often seen with locoregionally advanced disease requiring complex multimodality treatments. These treatments may have detrimental effects on the oral microbiome, which is critical to maintaining physiological balance and health. METHODS The effects of different OCC and OPC treatment types on the oral microbiome and metabolomic profiles for 24-month post-treatment in patients with OCC and OPC were investigated using 16S rRNA gene amplicon next-generation sequencing and gas chromatography-mass spectrometry (GC-MS), respectively. RESULTS Chemoradiation resulted in oral dysbiosis with specific depletion of genera which regulate the enterosalivary nitrate-nitrite-nitric oxide pathway. These data also correlate with the oral metabolomic profiles with nitric oxide-related precursor, modulator, or catalyst significantly downregulated in saliva samples from patients' postchemoradiation. CONCLUSIONS Together, we have shown that oral dysbiosis due to the effects of chemoradiation could potentially have an impact on OCC and OPC patient's quality of life post-treatment.
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Affiliation(s)
- Yenkai Lim
- The Saliva and Liquid Biopsy Translational Research Team, School of Biomedical Sciences, Institute of Health and Biomedical Innovation, Queensland University of Technology, Brisbane, Queensland, Australia.,The Translational Research Institute, Brisbane, Queensland, Australia
| | - Kai Dun Tang
- The Saliva and Liquid Biopsy Translational Research Team, School of Biomedical Sciences, Institute of Health and Biomedical Innovation, Queensland University of Technology, Brisbane, Queensland, Australia.,The Translational Research Institute, Brisbane, Queensland, Australia
| | - Avinash V Karpe
- The Land and Water, Commonwealth Scientific and Industrial Research Organisation, Ecosciences Precinct Dutton Park, Brisbane, Queensland, Australia
| | - David J Beale
- The Land and Water, Commonwealth Scientific and Industrial Research Organisation, Ecosciences Precinct Dutton Park, Brisbane, Queensland, Australia
| | - Makrina Totsika
- School of Biomedical Sciences, Institute of Health and Biomedical Innovation, Queensland University of Technology, Brisbane, Queensland, Australia
| | - Liz Kenny
- The School of Medicine, University of Queensland, Royal Brisbane and Women's Hospital, Brisbane, Queensland, Australia
| | - Mark Morrison
- The University of Queensland Diamantina Institute, University of Queensland, Translational Research Institute, Brisbane, Queensland, Australia
| | - Chamindie Punyadeera
- The Saliva and Liquid Biopsy Translational Research Team, School of Biomedical Sciences, Institute of Health and Biomedical Innovation, Queensland University of Technology, Brisbane, Queensland, Australia.,The Translational Research Institute, Brisbane, Queensland, Australia
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42
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Moentadj R, Wang Y, Bowerman K, Rehaume L, Nel H, O Cuiv P, Stephens J, Baharom A, Maradana M, Lakis V, Morrison M, Wells T, Hugenholtz P, Benham H, Le Cao KA, Thomas R. Streptococcus species enriched in the oral cavity of patients with RA are a source of peptidoglycan-polysaccharide polymers that can induce arthritis in mice. Ann Rheum Dis 2021; 80:573-581. [PMID: 33397732 DOI: 10.1136/annrheumdis-2020-219009] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2020] [Revised: 12/12/2020] [Accepted: 12/15/2020] [Indexed: 11/04/2022]
Abstract
OBJECTIVES Analysis of oral dysbiosis in individuals sharing genetic and environmental risk factors with rheumatoid arthritis (RA) patients may illuminate how microbiota contribute to disease susceptibility. We studied the oral microbiota in a prospective cohort of patients with RA, first-degree relatives (FDR) and healthy controls (HC), then genomically and functionally characterised streptococcal species from each group to understand their potential contribution to RA development. METHODS After DNA extraction from tongue swabs, targeted 16S rRNA gene sequencing and statistical analysis, we defined a microbial dysbiosis score based on an operational taxonomic unit signature of disease. After selective culture from swabs, we identified streptococci by sequencing. We examined the ability of streptococcal cell walls (SCW) from isolates to induce cytokines from splenocytes and arthritis in ZAP-70-mutant SKG mice. RESULTS RA and FDR were more likely to have periodontitis symptoms. An oral microbial dysbiosis score discriminated RA and HC subjects and predicted similarity of FDR to RA. Streptococcaceae were major contributors to the score. We identified 10 out of 15 streptococcal isolates as S. parasalivarius sp. nov., a distinct sister species to S. salivarius. Tumour necrosis factor and interleukin 6 production in vitro differed in response to individual S. parasalivarius isolates, suggesting strain specific effects on innate immunity. Cytokine secretion was associated with the presence of proteins potentially involved in S. parasalivarius SCW synthesis. Systemic administration of SCW from RA and HC-associated S. parasalivarius strains induced similar chronic arthritis. CONCLUSIONS Dysbiosis-associated periodontal inflammation and barrier dysfunction may permit arthritogenic insoluble pro-inflammatory pathogen-associated molecules, like SCW, to reach synovial tissue.
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Affiliation(s)
- Rabia Moentadj
- The University of Queensland Diamantina Institute, The University of Queensland, Princess Alexandra Hospital, Woolloongabba, Queensland, Australia
| | - Yiwen Wang
- School of Mathematics and Statistics, Melbourne Integrative Genomics, The University of Melbourne, Melbourne, Victoria, Australia
| | - Kate Bowerman
- Australian Centre for Ecogenomics, The University of Queensland - Saint Lucia Campus, Saint Lucia, Queensland, Australia
| | - Linda Rehaume
- The University of Queensland Diamantina Institute, The University of Queensland, Princess Alexandra Hospital, Woolloongabba, Queensland, Australia
| | - Hendrik Nel
- The University of Queensland Diamantina Institute, The University of Queensland, Princess Alexandra Hospital, Woolloongabba, Queensland, Australia
| | - Paraic O Cuiv
- The University of Queensland Diamantina Institute, The University of Queensland, Princess Alexandra Hospital, Woolloongabba, Queensland, Australia.,Current address: Microba Life Sciences, Translational Research Institute, Woolloongabba, QLD, Australia
| | - Juliette Stephens
- The University of Queensland Diamantina Institute, The University of Queensland, Princess Alexandra Hospital, Woolloongabba, Queensland, Australia
| | - Amalina Baharom
- The University of Queensland Diamantina Institute, The University of Queensland, Princess Alexandra Hospital, Woolloongabba, Queensland, Australia
| | - Muralidhara Maradana
- The University of Queensland Diamantina Institute, The University of Queensland, Princess Alexandra Hospital, Woolloongabba, Queensland, Australia
| | - Vanessa Lakis
- The University of Queensland Diamantina Institute, The University of Queensland, Princess Alexandra Hospital, Woolloongabba, Queensland, Australia
| | - Mark Morrison
- The University of Queensland Diamantina Institute, The University of Queensland, Princess Alexandra Hospital, Woolloongabba, Queensland, Australia
| | - Timothy Wells
- The University of Queensland Diamantina Institute, The University of Queensland, Princess Alexandra Hospital, Woolloongabba, Queensland, Australia
| | - Philip Hugenholtz
- Australian Centre for Ecogenomics, The University of Queensland - Saint Lucia Campus, Saint Lucia, Queensland, Australia
| | - Helen Benham
- The University of Queensland Diamantina Institute, The University of Queensland, Princess Alexandra Hospital, Woolloongabba, Queensland, Australia.,Department of Rheumatology, Princess Alexandra Hospital, Woolloongabba, Queensland, Australia
| | - Kim-Anh Le Cao
- School of Mathematics and Statistics, Melbourne Integrative Genomics, The University of Melbourne, Melbourne, Victoria, Australia
| | - Ranjeny Thomas
- The University of Queensland Diamantina Institute, The University of Queensland, Princess Alexandra Hospital, Woolloongabba, Queensland, Australia
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Zhang J, Hoedt EC, Liu Q, Berendsen E, Teh JJ, Hamilton A, O' Brien AW, Ching JYL, Wei H, Yang K, Xu Z, Wong SH, Mak JWY, Sung JJY, Morrison M, Yu J, Kamm MA, Ng SC. Elucidation of Proteus mirabilis as a Key Bacterium in Crohn's Disease Inflammation. Gastroenterology 2021; 160:317-330.e11. [PMID: 33011176 DOI: 10.1053/j.gastro.2020.09.036] [Citation(s) in RCA: 45] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/03/2020] [Revised: 08/20/2020] [Accepted: 09/23/2020] [Indexed: 12/16/2022]
Abstract
BACKGROUND & AIMS Proteus spp, Gram-negative facultative anaerobic bacilli, have recently been associated with Crohn's disease (CD) recurrence after intestinal resection. We investigated the genomic and functional role of Proteus as a gut pathogen in CD. METHODS Proteus spp abundance was assessed by ure gene-specific polymerase chain in 54 pairs of fecal samples and 101 intestinal biopsies from patients with CD and healthy controls. The adherence, invasion, and intracellular presence of 2 distinct isolates of Proteus mirabilis in epithelial cells were evaluated using immunofluorescence and electron microscopy. Intracellular gene expression profiles and regulated pathways were analyzed by RNA sequencing and KEGG pathway analysis. Biologic functions of 2 isolates of P mirabilis were determined by in vitro cell culture, and in vivo using conventional mice and germ-free mice. RESULTS Proteus spp were significantly more prevalent and abundant in fecal samples and colonic tissue of patients with CD than controls. A greater abundance of the genus Fusobacterium and a lesser abundance of the genus Faecalibacterium were seen in patients with CD with a high Proteus spp abundance. All 24 Proteus monoclones isolated from patients with CD belonged to members of P mirabilis lineages and 2 isolates, recovered from stool or mucosa, were used in further studies. Mice gavaged with either P mirabilis strain had more severe colonic inflammation. Co-culture of the isolates with epithelial cell lines showed bacterial adherence, invasion, increased production of pro-inflammatory cytokines IL-18 and IL-1α, and cell necrosis. Both isolates induced key pro-inflammatory pathways, including NOD-like receptor signaling, Jak-STAT signaling, and MAPK signaling, and induced pro-inflammatory genes and activated inflammation-related pathways in gnotobiotic mice. CONCLUSIONS P mirabilis in the gut is associated with CD and can induce inflammation in cells and animal models of colitis. P mirabilis can act as a pathobiont and play a crucial role in the pathogenesis of CD.
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Affiliation(s)
- Jingwan Zhang
- Department 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
| | - Emily C Hoedt
- The University of Queensland Diamantina Institute, Faculty of Medicine, Brisbane, Australia; APC Microbiome Ireland, University College Cork, Cork, Ireland
| | - Qin Liu
- Department 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
| | - Erwin Berendsen
- The University of Queensland Diamantina Institute, Faculty of Medicine, Brisbane, Australia
| | - Jing Jie Teh
- The University of Queensland Diamantina Institute, Faculty of Medicine, Brisbane, Australia
| | - Amy Hamilton
- Department of Gastroenterology, St Vincent's Hospital, Melbourne, Australia; Department of Medicine, The University of Melbourne, Melbourne, Australia
| | - Amy Wilson O' Brien
- Department of Gastroenterology, St Vincent's Hospital, Melbourne, Australia; Department of Medicine, The University of Melbourne, Melbourne, Australia
| | - Jessica Y L Ching
- Department 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
| | - Hong Wei
- Department of Laboratory Animal Science at the Third Military Medical University in Chongqing, China
| | - Keli Yang
- Department 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
| | - Zhilu Xu
- Department 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
| | - Sunny H Wong
- Department 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; Center for Gut Microbiota Research, Department of Medicine and Therapeutics, The Chinese University of Hong Kong, Hong Kong, China
| | - Joyce W Y Mak
- Department 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
| | - Joseph J Y Sung
- Department 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
| | - Mark Morrison
- The University of Queensland Diamantina Institute, Faculty of Medicine, Brisbane, Australia.
| | - Jun Yu
- Department 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; Center for Gut Microbiota Research, Department of Medicine and Therapeutics, The Chinese University of Hong Kong, Hong Kong, China.
| | - Michael A Kamm
- Department of Gastroenterology, St Vincent's Hospital, Melbourne, Australia; Department of Medicine, The University of Melbourne, Melbourne, Australia.
| | - Siew C Ng
- Department 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; Center for Gut Microbiota Research, Department of Medicine and Therapeutics, The Chinese University of Hong Kong, Hong Kong, China.
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Arriola Apelo SI, Lin A, Brinkman JA, Meyer E, Morrison M, Tomasiewicz JL, Pumper CP, Baar EL, Richardson NE, Alotaibi M, Lamming DW. Ovariectomy uncouples lifespan from metabolic health and reveals a sex-hormone-dependent role of hepatic mTORC2 in aging. eLife 2020; 9:56177. [PMID: 32720643 PMCID: PMC7386906 DOI: 10.7554/elife.56177] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [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: 03/09/2020] [Accepted: 07/10/2020] [Indexed: 02/06/2023] Open
Abstract
Inhibition of mTOR (mechanistic Target Of Rapamycin) signaling by rapamycin promotes healthspan and longevity more strongly in females than males, perhaps because inhibition of hepatic mTORC2 (mTOR Complex 2) specifically reduces the lifespan of males. Here, we demonstrate using gonadectomy that the sex-specific impact of reduced hepatic mTORC2 is not reversed by depletion of sex hormones. Intriguingly, we find that ovariectomy uncouples lifespan from metabolic health, with ovariectomized females having improved survival despite paradoxically having increased adiposity and decreased control of blood glucose levels. Further, ovariectomy unexpectedly promotes midlife survival of female mice lacking hepatic mTORC2, significantly increasing the survival of those mice that do not develop cancer. In addition to identifying a sex hormone-dependent role for hepatic mTORC2 in female longevity, our results demonstrate that metabolic health is not inextricably linked to lifespan in mammals, and highlight the importance of evaluating healthspan in mammalian longevity studies.
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Affiliation(s)
- Sebastian I Arriola Apelo
- Department of Dairy Science, University of Wisconsin-Madison, Madison, United States.,William S. Middleton Memorial Veterans Hospital, Madison, United States.,Department of Medicine, University of Wisconsin-Madison, Madison, United States
| | - Amy Lin
- Department of Dairy Science, University of Wisconsin-Madison, Madison, United States.,William S. Middleton Memorial Veterans Hospital, Madison, United States.,Department of Medicine, University of Wisconsin-Madison, Madison, United States
| | - Jacqueline A Brinkman
- William S. Middleton Memorial Veterans Hospital, Madison, United States.,Department of Medicine, University of Wisconsin-Madison, Madison, United States
| | - Emma Meyer
- Department of Dairy Science, University of Wisconsin-Madison, Madison, United States.,William S. Middleton Memorial Veterans Hospital, Madison, United States.,Department of Medicine, University of Wisconsin-Madison, Madison, United States
| | - Mark Morrison
- William S. Middleton Memorial Veterans Hospital, Madison, United States.,Department of Medicine, University of Wisconsin-Madison, Madison, United States
| | - Jay L Tomasiewicz
- William S. Middleton Memorial Veterans Hospital, Madison, United States
| | - Cassidy P Pumper
- William S. Middleton Memorial Veterans Hospital, Madison, United States.,Department of Medicine, University of Wisconsin-Madison, Madison, United States
| | - Emma L Baar
- William S. Middleton Memorial Veterans Hospital, Madison, United States.,Department of Medicine, University of Wisconsin-Madison, Madison, United States
| | - Nicole E Richardson
- William S. Middleton Memorial Veterans Hospital, Madison, United States.,Department of Medicine, University of Wisconsin-Madison, Madison, United States.,Endocrinology and Reproductive Physiology Graduate Training Program, University of Wisconsin-Madison, Madison, United States
| | - Mohammed Alotaibi
- William S. Middleton Memorial Veterans Hospital, Madison, United States.,Department of Medicine, University of Wisconsin-Madison, Madison, United States.,Endocrinology and Reproductive Physiology Graduate Training Program, University of Wisconsin-Madison, Madison, United States
| | - Dudley W Lamming
- William S. Middleton Memorial Veterans Hospital, Madison, United States.,Department of Medicine, University of Wisconsin-Madison, Madison, United States.,Endocrinology and Reproductive Physiology Graduate Training Program, University of Wisconsin-Madison, Madison, United States.,University of Wisconsin Carbone Comprehensive Cancer Center, University of Wisconsin, Madison, United States
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45
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Shah A, Talley NJ, Koloski N, Macdonald GA, Kendall BJ, Shanahan ER, Walker MM, Keely S, Jones MP, Morrison M, Holtmann GJ. Duodenal bacterial load as determined by quantitative polymerase chain reaction in asymptomatic controls, functional gastrointestinal disorders and inflammatory bowel disease. Aliment Pharmacol Ther 2020; 52:155-167. [PMID: 32412673 DOI: 10.1111/apt.15786] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [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: 01/05/2020] [Revised: 02/12/2020] [Accepted: 04/20/2020] [Indexed: 12/12/2022]
Abstract
BACKGROUND Small intestinal bacterial overgrowth may play a role in gastrointestinal and non-gastrointestinal diseases. AIMS To use quantitative polymerase chain reaction (qPCR) to determine and compare bacterial loads of duodenal biopsies in asymptomatic controls, and patients with functional gastrointestinal disorders (FGIDs) and inflammatory bowel disease (IBD) including ulcerative colitis (UC) and Crohn's disease (CD). To define effects of gastric acid inhibition on bacterial load, explore links of bacterial load and gastrointestinal symptoms in response to a standardised nutrient challenge and compare bacterial load with glucose breath test results. METHODS In 237 patients (63 controls, 84 FGID and 90 IBD), we collected mucosal samples under aseptic conditions during endoscopy extracted and total DNA. Bacterial load metric was calculated utilising qPCR measurements of the bacterial 16S rRNA gene, normalised to human beta-actin expression. Standard glucose breath test and nutrient challenge test were performed. RESULTS The duodenal microbial load was higher in patients with FGID (0.22 ± 0.03) than controls (0.07 ± 0.05; P = 0.007) and patients with UC (0.01 ± 0.05) or CD (0.02 ± 0.09), (P = 0.0001). While patients treated with proton pump inhibitors (PPI) had significantly higher bacterial loads than non-users (P < 0.05), this did not explain differences between patient groups and controls. Bacterial load was significantly (r = 0.21, P < 0.016) associated with the symptom response to standardised nutrient challenge test. Methane, but not hydrogen values on glucose breath test were associated with bacterial load measured utilising qPCR. CONCLUSIONS Utilising qPCR, a diagnosis of FGID and treatment with PPI were independently associated with increased bacterial loads. Increased bacterial loads are associated with an augmented symptom response to a standardised nutrient challenge.
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Affiliation(s)
- Ayesha Shah
- Department of Gastroenterology and Hepatology, Princess Alexandra Hospital, Brisbane, Qld, Australia.,Faculty of Medicine and Faulty of Health and Behavioural Sciences, University of Queensland, Brisbane, Qld, Australia
| | - Nicholas J Talley
- Faculty of Health and Medicine, University of Newcastle, Callaghan, NSW, Australia
| | - Natasha Koloski
- Department of Gastroenterology and Hepatology, Princess Alexandra Hospital, Brisbane, Qld, Australia.,Faculty of Medicine and Faulty of Health and Behavioural Sciences, University of Queensland, Brisbane, Qld, Australia
| | - Graeme A Macdonald
- Department of Gastroenterology and Hepatology, Princess Alexandra Hospital, Brisbane, Qld, Australia.,Faculty of Medicine and Faulty of Health and Behavioural Sciences, University of Queensland, Brisbane, Qld, Australia
| | - Bradley J Kendall
- Department of Gastroenterology and Hepatology, Princess Alexandra Hospital, Brisbane, Qld, Australia.,Faculty of Medicine and Faulty of Health and Behavioural Sciences, University of Queensland, Brisbane, Qld, Australia
| | - Erin R Shanahan
- Department of Gastroenterology and Hepatology, Princess Alexandra Hospital, Brisbane, Qld, Australia.,Faculty of Medicine and Faulty of Health and Behavioural Sciences, University of Queensland, Brisbane, Qld, Australia
| | - Marjorie M Walker
- Faculty of Health and Medicine, University of Newcastle, Callaghan, NSW, Australia
| | - Simon Keely
- Faculty of Health and Medicine, University of Newcastle, Callaghan, NSW, Australia
| | - Michael P Jones
- Psychology Department, Macquarie University, Ryde, NSW, Australia
| | - Mark Morrison
- Department of Gastroenterology and Hepatology, Princess Alexandra Hospital, Brisbane, Qld, Australia.,Diamantina Institute, University of Queensland, Brisbane, Qld, Australia
| | - Gerald J Holtmann
- Department of Gastroenterology and Hepatology, Princess Alexandra Hospital, Brisbane, Qld, Australia.,Faculty of Medicine and Faulty of Health and Behavioural Sciences, University of Queensland, Brisbane, Qld, Australia
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Adams LA, Wang Z, Liddle C, Melton PE, Ariff A, Chandraratna H, Tan J, Ching H, Coulter S, de Boer B, Christophersen CT, O'Sullivan TA, Morrison M, Jeffrey GP. Bile acids associate with specific gut microbiota, low-level alcohol consumption and liver fibrosis in patients with non-alcoholic fatty liver disease. Liver Int 2020; 40:1356-1365. [PMID: 32243703 DOI: 10.1111/liv.14453] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/03/2019] [Revised: 03/20/2020] [Accepted: 03/24/2020] [Indexed: 12/11/2022]
Abstract
BACKGROUND Bile acids (BAs) are synthesized by the liver and modified by gut bacteria, and may play an intermediary role between the gut microbiome and liver in promoting fibrosis in non-alcoholic fatty liver disease (NAFLD). We investigated the associations between serum and faecal BAs, gut microbiome and fibrosis in patients with and without NAFLD and examined the impact of diet and alcohol consumption on these relationships. METHODS Adult patients (n = 122) underwent liver biopsy and BAs characterization by high-performance liquid chromatography/mass spectrometry. Gut microbiome composition was analysed using next-generation 16S rRNA sequencing. Diet and alcohol intake were determined by 3-day food diary. RESULTS Serum and faecal BA concentrations increased progressively among non-NAFLD controls (n = 55), NAFLD patients with no/mild fibrosis (F0-2, n = 58) and NAFLD with advanced fibrosis (F3/4, n = 9). Progressive increases in serum BAs were driven by primary conjugated BAs including glycocholic acid [GCA] and secondary conjugated BAs. In contrast, faecal BA increase was driven by secondary unconjugated BAs (predominately deoxycholic acid [DCA]). Serum GCA levels and faecal DCA levels correlated with the abundance of Bacteroidaceae and Lachnospiraceae, and stool secondary BAs with an unclassifiable family of the order Bacteroidales (Bacteroidales;other). These bacterial taxa were also associated with advanced fibrosis. Modest alcohol consumption was positively correlated with faecal DCA levels and relative abundance of Lachnospiracaea and Bacteroidales;other. CONCLUSIONS Higher serum and faecal BA levels are associated with advanced fibrosis in NAFLD. Specific gut bacteria link alterations in BA profiles and advanced fibrosis, and may be influenced by low-level alcohol consumption.
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Affiliation(s)
- Leon A Adams
- Medical School, Faculty of Medical and Health Sciences, The University of Western Australia, Perth, WA, Australia.,Department of Hepatology, Sir Charles Gairdner Hospital, Nedlands, WA, Australia
| | - Zhengyi Wang
- Medical School, Faculty of Medical and Health Sciences, The University of Western Australia, Perth, WA, Australia.,Department of Hepatology, Sir Charles Gairdner Hospital, Nedlands, WA, Australia
| | - Chris Liddle
- Storr Liver Centre, The Westmead Institute, University of Sydney, Westmead, NSW, Australia
| | - Phillip E Melton
- Curtin/UWA Centre for Genetic Origins of Health and Disease, Curtin University and University of Western Australia, Perth, WA, Australia.,School of Pharmacy and Biomedical Sciences, Curtin University, Bentley, WA, Australia
| | - Amir Ariff
- Curtin/UWA Centre for Genetic Origins of Health and Disease, Curtin University and University of Western Australia, Perth, WA, Australia
| | | | - Jeremy Tan
- Department of Upper GI and Bariatric Surgery, Singapore General Hospital, Singapore, Singapore
| | - Helena Ching
- Medical School, Faculty of Medical and Health Sciences, The University of Western Australia, Perth, WA, Australia
| | - Sally Coulter
- Storr Liver Centre, The Westmead Institute, University of Sydney, Westmead, NSW, Australia
| | - Bastiaan de Boer
- Department of Anatomy, PathWest Laboratory Medical WA, Pathwest, WA, Australia
| | - Claus T Christophersen
- School of Medical and Health Sciences, Edith Cowan University, Joondalup, WA, Australia.,WA Human Microbiome Collaboration Centre, School of Molecular and Life Sciences, Curtin University, Bentley, WA, Australia
| | - Therese A O'Sullivan
- School of Medical and Health Sciences, Edith Cowan University, Joondalup, WA, Australia
| | - Mark Morrison
- Faculty of Medicine, The University of Queensland Diamantina Institute, Translational Research Institute, Woolloongabba, QLD, Australia
| | - Gary P Jeffrey
- Medical School, Faculty of Medical and Health Sciences, The University of Western Australia, Perth, WA, Australia.,Department of Hepatology, Sir Charles Gairdner Hospital, Nedlands, WA, Australia
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47
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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]
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48
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Stefia LV, Lee J, Patel J, de Sousa SR, Legrand J, Rodero M, Burman S, Linedale R, Morrison M, Khosrotehrani K. Secretome Components from Faecalibacterium prausnitzii Strains A2-165 and AHMP21 Modulate Cutaneous Wound Inflammation. J Invest Dermatol 2020; 140:2312-2315.e6. [PMID: 32247858 DOI: 10.1016/j.jid.2020.02.027] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2019] [Revised: 02/12/2020] [Accepted: 02/17/2020] [Indexed: 01/07/2023]
Affiliation(s)
- Laurancia Vina Stefia
- The University of Queensland Diamantina Institute, The University of Queensland, Brisbane, Queensland, Australia
| | - James Lee
- The University of Queensland Diamantina Institute, The University of Queensland, Brisbane, Queensland, Australia
| | - Jatin Patel
- The University of Queensland Diamantina Institute, The University of Queensland, Brisbane, Queensland, Australia
| | - Silmara Rodrigues de Sousa
- The University of Queensland Diamantina Institute, The University of Queensland, Brisbane, Queensland, Australia
| | - Julien Legrand
- The University of Queensland Diamantina Institute, The University of Queensland, Brisbane, Queensland, Australia
| | - Mathieu Rodero
- The University of Queensland Diamantina Institute, The University of Queensland, Brisbane, Queensland, Australia
| | - Sriti Burman
- The University of Queensland Diamantina Institute, The University of Queensland, Brisbane, Queensland, Australia
| | - Richard Linedale
- The University of Queensland Diamantina Institute, The University of Queensland, Brisbane, Queensland, Australia
| | - Mark Morrison
- The University of Queensland Diamantina Institute, The University of Queensland, Brisbane, Queensland, Australia
| | - Kiarash Khosrotehrani
- The University of Queensland Diamantina Institute, The University of Queensland, Brisbane, Queensland, Australia.
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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.
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Gordon CA, Krause L, McManus DP, Morrison M, Weerakoon KG, Connor MC, Olveda RM, Ross AG, Gobert GN. Helminths, polyparasitism, and the gut microbiome in the Philippines. Int J Parasitol 2020; 50:217-225. [PMID: 32135180 DOI: 10.1016/j.ijpara.2019.12.008] [Citation(s) in RCA: 12] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2019] [Revised: 12/10/2019] [Accepted: 12/18/2019] [Indexed: 12/19/2022]
Abstract
Polyparasitism, involving soil-transmitted helminths. and Schistosoma blood flukes, is common in low to middle income countries. These helminths impact on the gut environment and can cause changes to the gut microbiome composition. Here we examined the gut microbiome in individuals with polyparasitism from two human cohorts in the Philippines utilising DNA sequencing-based profiling. Multiple helminth species infections were high with 70.3% of study participants harbouring at least two parasite species, and 16% harbouring at least five species. Increased numbers of helminth co-infections, in particular with the gut-resident soil-transmitted helminths, were significantly associated with increased bacterial diversity; however no significant parasite-gut microbiome associations were evident for individuals infected only with Schistosoma japonicum. In general, a healthy gut is associated with high bacterial diversity, which in these human cohorts may be the result of helminth-mediated immune modulation, or due to changes in the gut environment caused by these parasitic helminths.
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Affiliation(s)
- Catherine A Gordon
- Molecular Parasitology Laboratory, Immunology Division, QIMR Berghofer Medical Research Institute, Brisbane, Australia
| | - Lutz Krause
- University of Queensland Diamantina Institute, Faculty of Medicine, Translational Research Institute, Brisbane, Australia
| | - Donald P McManus
- Molecular Parasitology Laboratory, Immunology Division, QIMR Berghofer Medical Research Institute, Brisbane, Australia
| | - Mark Morrison
- University of Queensland Diamantina Institute, Faculty of Medicine, Translational Research Institute, Brisbane, Australia
| | - Kosala G Weerakoon
- Molecular Parasitology Laboratory, Immunology Division, QIMR Berghofer Medical Research Institute, Brisbane, Australia; School of Public Health, University of Queensland, Brisbane, Australia; Department of Parasitology, Faculty of Medicine and Allied Sciences, Rajarata University of Sri Lanka, Saliyapura, Sri Lanka
| | - Mairead C Connor
- School of Biological Sciences, Queen's University Belfast, Belfast, United Kingdom
| | - Remigio M Olveda
- Department of Immunology, Research Institute of Tropical Medicine, Manilla, Philippines
| | - Allen G Ross
- Menzies Health Institute Queensland, Gold Coast, Australia
| | - Geoffrey N Gobert
- School of Biological Sciences, Queen's University Belfast, Belfast, United Kingdom.
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