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Hertz S, Anderson JM, Nielsen HL, Schachtschneider C, McCauley KE, Özçam M, Larsen L, Lynch SV, Nielsen H. Fecal microbiota is associated with extraintestinal manifestations in inflammatory bowel disease. Ann Med 2024; 56:2338244. [PMID: 38648495 PMCID: PMC11036898 DOI: 10.1080/07853890.2024.2338244] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/29/2023] [Accepted: 03/17/2024] [Indexed: 04/25/2024] Open
Abstract
INTRODUCTION A large proportion of patients with inflammatory bowel disease (IBD) experience IBD-related inflammatory conditions outside of the gastrointestinal tract, termed extraintestinal manifestations (EIMs) which further decreases quality of life and, in extreme cases, can be life threatening. The pathogenesis of EIMs remains unknown, and although gut microbiota alterations are a well-known characteristic of patients with IBD, its relationship with EIMs remains sparsely investigated. This study aimed to compare the gut microbiota of patients with IBD with and without EIMs. METHODS A total of 131 Danish patients with IBD were included in the study, of whom 86 had a history of EIMs (IBD-EIM) and 45 did not (IBD-C). Stool samples underwent 16S rRNA sequencing. Amplicon sequence variants (ASVs) were mapped to the Silva database. Diversity indices and distance matrices were compared between IBD-EIM and IBD-C. Differentially abundant ASVs were identified using a custom multiple model statistical analysis approach, and modules of co-associated bacteria were identified using sparse correlations for compositional data (SparCC) and related to patient EIM status. RESULTS Patients with IBD and EIMs exhibited increased disease activity, body mass index, increased fecal calprotectin levels and circulating monocytes and neutrophils. Microbiologically, IBD-EIM exhibited lower fecal microbial diversity than IBD-C (Mann-Whitney's test, p = .01) and distinct fecal microbiota composition (permutational multivariate analysis of variance; weighted UniFrac, R2 = 0.018, p = .01). A total of 26 ASVs exhibited differential relative abundances between IBD-EIM and IBD-C, including decreased Agathobacter and Blautia and increased Eggerthella lenta in the IBD-EIM group. SparCC analysis identified 27 bacterial co-association modules, three of which were negatively related to EIM (logistic regression, p < .05) and included important health-associated bacteria, such as Agathobacter and Faecalibacterium. CONCLUSIONS The fecal microbiota in IBD patients with EIMs is distinct from that in IBD patients without EIM and could be important for EIM pathogenesis.
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Affiliation(s)
- Sandra Hertz
- Department of Infectious Diseases, Aalborg University Hospital, Aalborg, Denmark
- Department of Clinical Medicine, Aalborg University, Aalborg, Denmark
- Department of Medicine, Division of Gastroenterology, University of California San Francisco, San Francisco, CA, USA
| | - Jacqueline Moltzau Anderson
- Department of Medicine, Division of Gastroenterology, University of California San Francisco, San Francisco, CA, USA
| | - Hans Linde Nielsen
- Department of Clinical Medicine, Aalborg University, Aalborg, Denmark
- Department of Clinical Microbiology, Aalborg University Hospital, Aalborg, Denmark
| | - Claire Schachtschneider
- Department of Medicine, Division of Gastroenterology, University of California San Francisco, San Francisco, CA, USA
| | - Kathryn E. McCauley
- Department of Medicine, Division of Gastroenterology, University of California San Francisco, San Francisco, CA, USA
| | - Mustafa Özçam
- Department of Medicine, Division of Gastroenterology, University of California San Francisco, San Francisco, CA, USA
| | - Lone Larsen
- Department of Gastroenterology, Aalborg University Hospital, Aalborg, Denmark
- Department of Clinical Medicine, Center for Molecular Prediction of Inflammatory Bowel Disease, PREDICT, Aalborg University, Aalborg, Denmark
| | - Susan V. Lynch
- Department of Medicine, Division of Gastroenterology, University of California San Francisco, San Francisco, CA, USA
| | - Henrik Nielsen
- Department of Infectious Diseases, Aalborg University Hospital, Aalborg, Denmark
- Department of Clinical Medicine, Aalborg University, Aalborg, Denmark
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Chen J, Zhu Y, Yuan Q. Predicting potential microbe-disease associations based on dual branch graph convolutional network. J Cell Mol Med 2024; 28:e18571. [PMID: 39086148 PMCID: PMC11291560 DOI: 10.1111/jcmm.18571] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2024] [Revised: 06/15/2024] [Accepted: 06/27/2024] [Indexed: 08/02/2024] Open
Abstract
Studying the association between microbes and diseases not only aids in the prevention and diagnosis of diseases, but also provides crucial theoretical support for new drug development and personalized treatment. Due to the time-consuming and costly nature of laboratory-based biological tests to confirm the relationship between microbes and diseases, there is an urgent need for innovative computational frameworks to anticipate new associations between microbes and diseases. Here, we propose a novel computational approach based on a dual branch graph convolutional network (GCN) module, abbreviated as DBGCNMDA, for identifying microbe-disease associations. First, DBGCNMDA calculates the similarity matrix of diseases and microbes by integrating functional similarity and Gaussian association spectrum kernel (GAPK) similarity. Then, semantic information from different biological networks is extracted by two GCN modules from different perspectives. Finally, the scores of microbe-disease associations are predicted based on the extracted features. The main innovation of this method lies in the use of two types of information for microbe/disease similarity assessment. Additionally, we extend the disease nodes to address the issue of insufficient features due to low data dimensionality. We optimize the connectivity between the homogeneous entities using random walk with restart (RWR), and then use the optimized similarity matrix as the initial feature matrix. In terms of network understanding, we design a dual branch GCN module, namely GlobalGCN and LocalGCN, to fine-tune node representations by introducing side information, including homologous neighbour nodes. We evaluate the accuracy of the DBGCNMDA model using five-fold cross-validation (5-fold-CV) technique. The results show that the area under the receiver operating characteristic curve (AUC) and area under the precision versus recall curve (AUPR) of the DBGCNMDA model in the 5-fold-CV are 0.9559 and 0.9630, respectively. The results from the case studies using published experimental data confirm a significant number of predicted associations, indicating that DBGCNMDA is an effective tool for predicting potential microbe-disease associations.
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Affiliation(s)
- Jing Chen
- School of Electronic and Information EngineeringSuzhou University of Science and TechnologySuzhouChina
| | - Yongjun Zhu
- School of Electronic and Information EngineeringSuzhou University of Science and TechnologySuzhouChina
| | - Qun Yuan
- Department of Respiratory Medicine, The Affiliated Suzhou Hospital of NanjingUniversity Medical SchoolSuzhouChina
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Sharma P, Brown S, Sokoya EM. Re-evaluation of dietary interventions in rheumatoid arthritis: can we improve patient conversations around food choices? Rheumatol Int 2024; 44:1409-1419. [PMID: 38376558 PMCID: PMC11222287 DOI: 10.1007/s00296-024-05541-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2023] [Accepted: 01/09/2024] [Indexed: 02/21/2024]
Abstract
Rheumatoid arthritis (RA) is one of over 100 different types of autoimmune conditions. In RA, the cells of the immune system attack the tissue lining the joints, triggering inflammation. A large body of research suggests that the underlying trigger(s) of RA are unique to an individual. For example, increased risk of RA can be driven by smoking tobacco in one individual and mercury exposure in another. Due to the development of next-generation sequencing technology, the critical role of the microbiota in shaping RA risk has been elucidated. Therefore, it is surprising that diet, arguably the most important lever in shaping the gut microbiota, is ineffective in the treatment of RA, even in a sub-set of patients. To attempt to rationalise this apparent paradox, we conducted an umbrella review to address the question as to whether diet can affect outcomes in RA.
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Affiliation(s)
- Prakriti Sharma
- College of Medicine and Public Health, Flinders University, Flinders Health and Medical Research Institute, Adelaide, SA, Australia
| | - Shannon Brown
- Flinders University Library, Adelaide, SA, Australia
| | - Elke M Sokoya
- College of Medicine and Public Health, Flinders University, Flinders Health and Medical Research Institute, Adelaide, SA, Australia.
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Koester ST, Chow A, Pepper-Tunick E, Lee P, Eckert M, Brenchley L, Gardner P, Song HJ, Li N, Schiffenbauer A, Volochayev R, Bayat N, McLean JS, Rider LG, Shenoi S, Stevens AM, Dey N. Familial clustering of dysbiotic oral and fecal microbiomes in juvenile dermatomyositis. Sci Rep 2024; 14:16158. [PMID: 38997299 PMCID: PMC11245510 DOI: 10.1038/s41598-024-60225-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2023] [Accepted: 04/19/2024] [Indexed: 07/14/2024] Open
Abstract
Juvenile dermatomyositis (JDM) is a rare immune-mediated disease of childhood with putative links to microbial exposures. In this multi-center, prospective, observational cohort study, we evaluated whether JDM is associated with discrete oral and gut microbiome signatures. We generated 16S rRNA sequencing data from fecal, saliva, supragingival, and subgingival plaque samples from JDM probands (n = 28). To control for genetic and environmental determinants of microbiome community structure, we also profiled microbiomes of unaffected family members (n = 27 siblings, n = 26 mothers, and n = 17 fathers). Sample type (oral-vs-fecal) and nuclear family unit were the predominant variables explaining variance in microbiome diversity, more so than having a diagnosis of JDM. The oral and gut microbiomes of JDM probands were more similar to their own unaffected siblings than they were to the microbiomes of other JDM probands. In a sibling-paired within-family analysis, several potentially immunomodulatory bacterial taxa were differentially abundant in the microbiomes of JDM probands compared to their unaffected siblings, including Faecalibacterium (gut) and Streptococcus (oral cavity). While microbiome features of JDM are often shared by unaffected family members, the loss or gain of specific fecal and oral bacteria may play a role in disease pathogenesis or be secondary to immune dysfunction in susceptible individuals.
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Affiliation(s)
- Sean T Koester
- Translational Science and Therapeutics Division, Fred Hutchinson Cancer Center, Seattle, WA, USA
- University of Kansas School of Medicine, Kansas City, USA
| | - Albert Chow
- Department of Pediatrics, Division of Rheumatology, University of Washington, Seattle, WA, USA
- Loma Linda University, Loma Linda, USA
| | - Evan Pepper-Tunick
- Molecular Engineering and Sciences Institute, University of Washington, Seattle, WA, USA
| | - Peggy Lee
- School of Dentistry, University of Washington, Seattle, WA, USA
| | - Mary Eckert
- Center for Clinical and Translational Research, Seattle Children's Research Institute, Seattle, WA, USA
- Center for Immunity and Immunotherapies, Seattle Children's Research Institute, Seattle, WA, USA
| | - Laurie Brenchley
- Office of the Clinical Director, NIDCR, National Institutes of Health, Bethesda, MD, USA
| | - Pamela Gardner
- Office of the Clinical Director, NIDCR, National Institutes of Health, Bethesda, MD, USA
- Oral Oncology at BC Cancer, Vancouver, BC, Canada
| | - Hyun Jung Song
- School of Dentistry, University of Washington, Seattle, WA, USA
| | - Naisi Li
- Translational Science and Therapeutics Division, Fred Hutchinson Cancer Center, Seattle, WA, USA
| | - Adam Schiffenbauer
- Environmental Autoimmunity Group, Clinical Research Branch, National Institute of Environmental Health Sciences, National Institutes of Health, Bethesda, MD, USA
| | - Rita Volochayev
- Environmental Autoimmunity Group, Clinical Research Branch, National Institute of Environmental Health Sciences, National Institutes of Health, Bethesda, MD, USA
| | - Nastaran Bayat
- Environmental Autoimmunity Group, Clinical Research Branch, National Institute of Environmental Health Sciences, National Institutes of Health, Bethesda, MD, USA
- Social and Scientific Systems, Inc., A DLH Holdings Corp. Company, Silver Spring, MD, USA
| | - Jeffrey S McLean
- Department of Periodontics, University of Washington, Seattle, WA, USA
| | - Lisa G Rider
- Environmental Autoimmunity Group, Clinical Research Branch, National Institute of Environmental Health Sciences, National Institutes of Health, Bethesda, MD, USA
| | - Susan Shenoi
- Department of Pediatrics, Division of Rheumatology, University of Washington, Seattle, WA, USA
- Center for Clinical and Translational Research, Seattle Children's Research Institute, Seattle, WA, USA
| | - Anne M Stevens
- Department of Pediatrics, Division of Rheumatology, University of Washington, Seattle, WA, USA
- Center for Clinical and Translational Research, Seattle Children's Research Institute, Seattle, WA, USA
- Janssen, a Wholly Owned Subsidiary of Johnson & Johnson, Raritan, USA
| | - Neelendu Dey
- Translational Science and Therapeutics Division, Fred Hutchinson Cancer Center, Seattle, WA, USA.
- Department of Medicine, Division of Gastroenterology, University of Washington, Seattle, WA, USA.
- Microbiome Research Initiative, Fred Hutchinson Cancer Center, Seattle, WA, USA.
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Nurgaziyev M, Issilbayeva A, Bersimbaev R, Ilderbayev O, Vinogradova E, Jarmukhanov Z, Nurgozhina A, Sergazy S, Kozhabergen N, Akhmetova Z, Meiramova A, Chulenbayeva L, Ibrayeva A, Mukhanbetzhanov N, Mukhanbetzhanova Z, Kozhakhmetov S, Ainabekova B, Kushugulova A. Gut microbiome-immune interactions and their role in rheumatoid arthritis development. PeerJ 2024; 12:e17477. [PMID: 39006008 PMCID: PMC11246623 DOI: 10.7717/peerj.17477] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2024] [Accepted: 05/06/2024] [Indexed: 07/16/2024] Open
Abstract
Objective The primary objective is to study the impact of gut microbiota and their interactions with diverse immunological markers on the development of rheumatoid arthritis. Methods This study was performed in Astana, Kazakhstan, and included 77 Kazakh female patients older than 18 years, who met the American College of Rheumatology 2010 classification criteria for rheumatoid arthritis (RA), and 113 healthy controls. The DNA was extracted from fecal samples obtained from all study participants for subsequent sequencing at the 16S rRNA gene V1-V3 locus, facilitating the analysis of the gut microbiome. The Multiplex immunoassay was employed to measure the concentrations of inflammatory cytokines, chemokines, and immunoglobulins in both fecal and plasma samples. Results Our taxonomic analysis revealed significant differences in the composition of the gut microbiota between the healthy control cohort and the cohort with rheumatoid arthritis RA. Alpha diversity was significantly lower in the RA group. Lachnospiraceae were the most abundant taxon and found to be crucial, showing correlations with immunological markers such as IL5. Additionally, Lachnospiraceae and Oscillospiraceae exhibited the most predictable power and distinguished the composition of both study groups. Conclusion Our study identifies key differences in the gut microbiome of RA patients, revealing distinct microbial patterns and specific taxa abundance. We highlight potential biomarkers in immunological and bacterial pathways, offering insights into RA development and indicating possibilities for personalized treatment.
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Affiliation(s)
- Madiyar Nurgaziyev
- Laboratory of Microbiome, Center for Life Sciences, National Laboratory Astana, Nazarbayev University, Astana, Kazakhstan
- Department of General Biology and Genomics, L.N. Gumilyov Eurasian National University, Astana, Kazakhstan
| | - Argul Issilbayeva
- Laboratory of Microbiome, Center for Life Sciences, National Laboratory Astana, Nazarbayev University, Astana, Kazakhstan
- NJSC Astana Medical University, Astana, Kazakhstan
| | - Rakhmetkazhi Bersimbaev
- Department of General Biology and Genomics, L.N. Gumilyov Eurasian National University, Astana, Kazakhstan
| | - Oralbek Ilderbayev
- Department of General Biology and Genomics, L.N. Gumilyov Eurasian National University, Astana, Kazakhstan
| | - Elizaveta Vinogradova
- Laboratory of Microbiome, Center for Life Sciences, National Laboratory Astana, Nazarbayev University, Astana, Kazakhstan
| | - Zharkyn Jarmukhanov
- Laboratory of Microbiome, Center for Life Sciences, National Laboratory Astana, Nazarbayev University, Astana, Kazakhstan
| | - Ayaulym Nurgozhina
- Laboratory of Microbiome, Center for Life Sciences, National Laboratory Astana, Nazarbayev University, Astana, Kazakhstan
| | - Shynggys Sergazy
- Laboratory of Microbiome, Center for Life Sciences, National Laboratory Astana, Nazarbayev University, Astana, Kazakhstan
| | - Nuray Kozhabergen
- Laboratory of Microbiome, Center for Life Sciences, National Laboratory Astana, Nazarbayev University, Astana, Kazakhstan
| | | | - Assel Meiramova
- Laboratory of Microbiome, Center for Life Sciences, National Laboratory Astana, Nazarbayev University, Astana, Kazakhstan
- NJSC Astana Medical University, Astana, Kazakhstan
| | - Laura Chulenbayeva
- Laboratory of Microbiome, Center for Life Sciences, National Laboratory Astana, Nazarbayev University, Astana, Kazakhstan
| | - Aigerim Ibrayeva
- Laboratory of Microbiome, Center for Life Sciences, National Laboratory Astana, Nazarbayev University, Astana, Kazakhstan
| | - Nurislam Mukhanbetzhanov
- Laboratory of Microbiome, Center for Life Sciences, National Laboratory Astana, Nazarbayev University, Astana, Kazakhstan
| | - Zhanel Mukhanbetzhanova
- Laboratory of Microbiome, Center for Life Sciences, National Laboratory Astana, Nazarbayev University, Astana, Kazakhstan
| | - Samat Kozhakhmetov
- Laboratory of Microbiome, Center for Life Sciences, National Laboratory Astana, Nazarbayev University, Astana, Kazakhstan
| | - Bayan Ainabekova
- Laboratory of Microbiome, Center for Life Sciences, National Laboratory Astana, Nazarbayev University, Astana, Kazakhstan
- NJSC Astana Medical University, Astana, Kazakhstan
| | - Almagul Kushugulova
- Laboratory of Microbiome, Center for Life Sciences, National Laboratory Astana, Nazarbayev University, Astana, Kazakhstan
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Ermencheva P, Kotov G, Shumnalieva R, Velikova T, Monov S. Exploring the Role of the Microbiome in Rheumatoid Arthritis-A Critical Review. Microorganisms 2024; 12:1387. [PMID: 39065155 PMCID: PMC11278530 DOI: 10.3390/microorganisms12071387] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2024] [Revised: 06/27/2024] [Accepted: 07/02/2024] [Indexed: 07/28/2024] Open
Abstract
Rheumatoid arthritis (RA) is a chronic, autoimmune rheumatic disease characterized by synovial joint inflammation with subsequent destruction as well as systemic manifestation, leading to impaired mobility and impaired quality of life. The etiopathogenesis of RA is still unknown, with genetic, epigenetic and environmental factors (incl. tobacco smoking) contributing to disease susceptibility. The link between genetic factors like "shared epitope alleles" and the development of RA is well known. However, why only some carriers have a break in self-tolerance and develop autoimmunity still needs to be clarified. The presence of autoantibodies in patients' serum months to years prior to the onset of clinical manifestations of RA has moved the focus to possible epigenetic factors, including environmental triggers that could contribute to the initiation and perpetuation of the inflammatory reaction in RA. Over the past several years, the role of microorganisms at mucosal sites (i.e., microbiome) has emerged as an essential mediator of inflammation in RA. An increasing number of studies have revealed the microbial role in the immunopathogenesis of autoimmune rheumatic diseases. Interaction between the host immune system and microbiota initiates loss of immunological tolerance and autoimmunity. The alteration in microbiome composition, the so-called dysbiosis, is associated with an increasing number of diseases. Immune dysfunction caused by dysbiosis triggers and sustains chronic inflammation. This review aims to provide a critical summary of the literature findings related to the hypothesis of a reciprocal relation between the microbiome and the immune system. Available data from studies reveal the pivotal role of the microbiome in RA pathogenesis.
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Affiliation(s)
- Plamena Ermencheva
- Clinic of Rheumatology, University Hospital ‘St. Ivan Rilski’, 13 Urvich Str., 1612 Sofia, Bulgaria; (P.E.); (G.K.); (R.S.); (S.M.)
| | - Georgi Kotov
- Clinic of Rheumatology, University Hospital ‘St. Ivan Rilski’, 13 Urvich Str., 1612 Sofia, Bulgaria; (P.E.); (G.K.); (R.S.); (S.M.)
| | - Russka Shumnalieva
- Clinic of Rheumatology, University Hospital ‘St. Ivan Rilski’, 13 Urvich Str., 1612 Sofia, Bulgaria; (P.E.); (G.K.); (R.S.); (S.M.)
- Department of Rheumatology, Medical University of Sofia, 13 Urvich Str., 1612 Sofia, Bulgaria
- Medical Faculty, Sofia University St. Kliment Ohridski, Kozyak 1, 1407 Sofia, Bulgaria
| | - Tsvetelina Velikova
- Medical Faculty, Sofia University St. Kliment Ohridski, Kozyak 1, 1407 Sofia, Bulgaria
| | - Simeon Monov
- Clinic of Rheumatology, University Hospital ‘St. Ivan Rilski’, 13 Urvich Str., 1612 Sofia, Bulgaria; (P.E.); (G.K.); (R.S.); (S.M.)
- Department of Rheumatology, Medical University of Sofia, 13 Urvich Str., 1612 Sofia, Bulgaria
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Andréasson K, Olofsson T, Lagishetty V, Alrawi Z, Klaassens E, Holster S, Hesselstrand R, Jacobs JP, Wallman JK, Volkmann ER. Treatment for Rheumatoid Arthritis Associated With Alterations in the Gastrointestinal Microbiota. ACR Open Rheumatol 2024; 6:421-427. [PMID: 38653503 PMCID: PMC11246830 DOI: 10.1002/acr2.11673] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2022] [Revised: 03/12/2024] [Accepted: 03/25/2024] [Indexed: 04/25/2024] Open
Abstract
OBJECTIVE Emerging research suggests that rheumatoid arthritis (RA) is associated with intestinal dysbiosis. This prospective pilot study evaluates changes in intestinal microbial composition in patients with RA initiating treatment with either methotrexate (MTX) or a tumor necrosis factor inhibitor (TNFi). METHODS Consecutive patients, fulfilling the 2010 American College of Rheumatology/EULAR classification criteria for RA, who started treatment with either MTX or TNFi delivered a stool sample upon initiation of immunosuppression and 3 months later. A 16S ribosomal RNA gene-based validated microbiota test (GA-map Dysbiosis Index Score [DIS], Genetic Analysis, Oslo, Norway) was used to evaluate for the presence and degree of dysbiosis. Fecal levels of Prevotella copri (P. copri) were analyzed by custom-made quantitative polymerase chain reaction. Changes in microbial composition were analyzed in relation to changes in disease activity, as measured by the disease activity score based on 28-joint counts, using C-reactive protein. RESULTS At baseline, dysbiosis was present in 33 of 50 (66%) participants and more common in participants with more than 2 years of disease duration (P = 0.019). At the 3-month follow-up, 27 of 50 (54%) were good treatment responders and the DIS had improved in 14 of 50 (28%). Participants initiating TNFi more often exhibited improvement in the DIS compared with those initiating MTX (P = 0.031). P. copri was identified in 32 of 50 (64%) at baseline. An improvement in disease activity score based on 28-joint counts, using C-reactive protein was associated with a simultaneous decrease in P. copri abundance (rs = 0.30, P = 0.036). CONCLUSION This study affirms that dysbiosis is a feature of RA. Although patients were not randomized to MTX or TNFi, the findings suggest that specific therapies may differentially modulate the gastrointestinal microbiota in RA. The association between P. copri and treatment response requires further study.
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Affiliation(s)
| | | | | | | | | | | | | | - Jonathan P. Jacobs
- University of California, Los Angeles and VA Greater Los Angeles Healthcare System
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Lamba A, Taneja V. Gut microbiota as a sensor of autoimmune response and treatment for rheumatoid arthritis. Immunol Rev 2024. [PMID: 38867408 DOI: 10.1111/imr.13359] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/14/2024]
Abstract
Rheumatoid arthritis (RA) is considered a multifactorial condition where interaction between the genetic and environmental factors lead to immune dysregulation causing autoreactivity. While among the various genetic factors, HLA-DR4 and DQ8, have been reported to be the strongest risk factors, the role of various environmental factors has been unclear. Though events initiating autoreactivity remain unknown, a mucosal origin of RA has gained attention based on the recent observations with the gut dysbiosis in patients. However, causality of gut dysbiosis has been difficult to prove in humans. Mouse models, especially mice expressing RA-susceptible and -resistant HLA class II genes have helped unravel the complex interactions between genetic factors and gut microbiome. This review describes the interactions between HLA genes and gut dysbiosis in sex-biased preclinical autoreactivity and discusses the potential use of endogenous commensals as indicators of treatment efficacy as well as therapeutic tool to suppress pro-inflammatory response in rheumatoid arthritis.
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Affiliation(s)
- Abhinav Lamba
- University of Minnesota Medical School, Minneapolis, Minnesota, USA
| | - Veena Taneja
- Department of Immunology and Division of Rheumatology, Mayo Clinic College of Medicine, Rochester, Minnesota, USA
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Anton ML, Cardoneanu A, Burlui AM, Mihai IR, Richter P, Bratoiu I, Macovei LA, Rezus E. The Lung in Rheumatoid Arthritis-Friend or Enemy? Int J Mol Sci 2024; 25:6460. [PMID: 38928165 PMCID: PMC11203675 DOI: 10.3390/ijms25126460] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2024] [Revised: 06/09/2024] [Accepted: 06/09/2024] [Indexed: 06/28/2024] Open
Abstract
Rheumatoid arthritis (RA) is a chronic autoimmune condition frequently found in rheumatological patients that sometimes raises diagnosis and management problems. The pathogenesis of the disease is complex and involves the activation of many cells and intracellular signaling pathways, ultimately leading to the activation of the innate and acquired immune system and producing extensive tissue damage. Along with joint involvement, RA can have numerous extra-articular manifestations (EAMs), among which lung damage, especially interstitial lung disease (ILD), negatively influences the evolution and survival of these patients. Although there are more and more RA-ILD cases, the pathogenesis is incompletely understood. In terms of genetic predisposition, external environmental factors act and subsequently determine the activation of immune system cells such as macrophages, neutrophils, B and T lymphocytes, fibroblasts, and dendritic cells. These, in turn, show the ability to secrete molecules with a proinflammatory role (cytokines, chemokines, growth factors) that will produce important visceral injuries, including pulmonary changes. Currently, there is new evidence that supports the initiation of the systemic immune response at the level of pulmonary mucosa where the citrullination process occurs, whereby the autoantibodies subsequently migrate from the lung to the synovial membrane. The aim of this paper is to provide current data regarding the pathogenesis of RA-associated ILD, starting from environmental triggers and reaching the cellular, humoral, and molecular changes involved in the onset of the disease.
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Affiliation(s)
- Maria-Luciana Anton
- Discipline of Rheumatology, Medical Department II, University of Medicine and Pharmacy “Grigore T Popa”, 700115 Iasi, Romania; (M.-L.A.); (A.M.B.); (I.R.M.); (P.R.); (I.B.); (L.A.M.); (E.R.)
- Clinical Rehabilitation Hospital, 700661 Iasi, Romania
| | - Anca Cardoneanu
- Discipline of Rheumatology, Medical Department II, University of Medicine and Pharmacy “Grigore T Popa”, 700115 Iasi, Romania; (M.-L.A.); (A.M.B.); (I.R.M.); (P.R.); (I.B.); (L.A.M.); (E.R.)
- Clinical Rehabilitation Hospital, 700661 Iasi, Romania
| | - Alexandra Maria Burlui
- Discipline of Rheumatology, Medical Department II, University of Medicine and Pharmacy “Grigore T Popa”, 700115 Iasi, Romania; (M.-L.A.); (A.M.B.); (I.R.M.); (P.R.); (I.B.); (L.A.M.); (E.R.)
- Clinical Rehabilitation Hospital, 700661 Iasi, Romania
| | - Ioana Ruxandra Mihai
- Discipline of Rheumatology, Medical Department II, University of Medicine and Pharmacy “Grigore T Popa”, 700115 Iasi, Romania; (M.-L.A.); (A.M.B.); (I.R.M.); (P.R.); (I.B.); (L.A.M.); (E.R.)
- Clinical Rehabilitation Hospital, 700661 Iasi, Romania
| | - Patricia Richter
- Discipline of Rheumatology, Medical Department II, University of Medicine and Pharmacy “Grigore T Popa”, 700115 Iasi, Romania; (M.-L.A.); (A.M.B.); (I.R.M.); (P.R.); (I.B.); (L.A.M.); (E.R.)
- Clinical Rehabilitation Hospital, 700661 Iasi, Romania
| | - Ioana Bratoiu
- Discipline of Rheumatology, Medical Department II, University of Medicine and Pharmacy “Grigore T Popa”, 700115 Iasi, Romania; (M.-L.A.); (A.M.B.); (I.R.M.); (P.R.); (I.B.); (L.A.M.); (E.R.)
- Clinical Rehabilitation Hospital, 700661 Iasi, Romania
| | - Luana Andreea Macovei
- Discipline of Rheumatology, Medical Department II, University of Medicine and Pharmacy “Grigore T Popa”, 700115 Iasi, Romania; (M.-L.A.); (A.M.B.); (I.R.M.); (P.R.); (I.B.); (L.A.M.); (E.R.)
- Clinical Rehabilitation Hospital, 700661 Iasi, Romania
| | - Elena Rezus
- Discipline of Rheumatology, Medical Department II, University of Medicine and Pharmacy “Grigore T Popa”, 700115 Iasi, Romania; (M.-L.A.); (A.M.B.); (I.R.M.); (P.R.); (I.B.); (L.A.M.); (E.R.)
- Clinical Rehabilitation Hospital, 700661 Iasi, Romania
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10
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Li H, Dai J, Zhao C, Hu T, Zhao G, Wang Q, Zhang L. Gut Subdoligranulum variabile ameliorates rheumatoid arthritis by promoting TSG-6 synthesis from joint cells. Front Immunol 2024; 15:1418717. [PMID: 38979426 PMCID: PMC11229780 DOI: 10.3389/fimmu.2024.1418717] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2024] [Accepted: 05/27/2024] [Indexed: 07/10/2024] Open
Abstract
Background A burgeoning body of evidence has substantiated the association between alterations in the composition of the gut microbiota and rheumatoid arthritis (RA). Nevertheless, our understanding of the intricate mechanisms underpinning this association is limited. Methods To investigate whether the gut microbiota influences the pathogenesis of RA through metabolism or immunity, we performed rigorous synthesis analyses using aggregated statistics from published genome-wide association studies (GWAS) using two-sample Mendelian randomization (MR) and mediated MR techniques, including two-step MR and multivariate MR analyses. Subsequently, we conducted in vitro cellular validation of the analyzed Microbial-Cytokine-RA pathway. We determined the optimal culture conditions through co-culture experiments involving concentration and time. Cell Counting Kit-8 (CCK-8) assays were employed to assess cellular viability, and enzyme-linked immunosorbent assays (ELISA) were performed to assess tumor necrosis factor-inducible gene 6 protein (TSG-6) and tumor necrosis factor-α (TNF-α) levels. Results Our univariable MR results confirmed 15 microbial traits, 7 metabolites and 2 cytokines that may be causally associated with RA (P FDR < 0.05). Mediation analysis revealed that microbial traits influence the risk of RA through metabolite or cytokine (proportion mediated: 7.75% - 58.22%). In vitro experiments demonstrated that TSG-6 was highly expressed in the Subdoligranulum variabile treatment group and was correlated with decreased RA severity (reduced TNF-α expression). Silencing the TSG-6 gene significantly increased TNF-α expression, regardless of treatment with S. variabile. Additionally, S. variabile-secreted exosomes exhibited the same effect. Conclusion The results of this study suggest that S. variabile has the potential to promote TSG-6 secretion, thereby reducing RA inflammation.
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Affiliation(s)
- Hongfeng Li
- Microbiome-X, School of Public Health, Cheeloo College of Medicine, Shandong University, Jinan, China
- Department of Health Inspection and Quarantine, School of Public Health, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, China
| | - Junhui Dai
- Microbiome-X, School of Public Health, Cheeloo College of Medicine, Shandong University, Jinan, China
| | - Changying Zhao
- Microbiome-X, School of Public Health, Cheeloo College of Medicine, Shandong University, Jinan, China
| | - Tianqi Hu
- Microbiome-X, School of Public Health, Cheeloo College of Medicine, Shandong University, Jinan, China
| | - Guoping Zhao
- Microbiome-X, School of Public Health, Cheeloo College of Medicine, Shandong University, Jinan, China
- State Key Laboratory of Microbial Technology, Shandong University, Qingdao, China
- Chinese Academy of Sciences Key Laboratory of Computational Biology, Bio-Med Big Data Center, Shanghai Institute of Nutrition and Health, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai, China
| | - Qinghua Wang
- School of Biological Science and Technology, University of Jinan, Jinan, China
| | - Lei Zhang
- Microbiome-X, School of Public Health, Cheeloo College of Medicine, Shandong University, Jinan, China
- State Key Laboratory of Microbial Technology, Shandong University, Qingdao, China
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11
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Florjan A, Rupnik M, Mahnic A. Gut microbiota composition in recurrent acute otitis media: a cross-sectional observational study. Folia Microbiol (Praha) 2024:10.1007/s12223-024-01174-z. [PMID: 38837014 DOI: 10.1007/s12223-024-01174-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2023] [Accepted: 05/15/2024] [Indexed: 06/06/2024]
Abstract
Recurrent acute otitis media (rAOM) poses a significant challenge in children aged 1 to 6 years, characterized by frequent and treatment-resistant ear infections. While existing studies predominantly focus on alterations in the nasopharyngeal microbiome associated with rAOM, our research explores the understudied association with the gut microbiome. In this cross-sectional observational prospective study, we enrolled 35 children aged 1 to 6 years during the 2021/2022 cold season. The test group comprised children with rAOM (n = 16), and the control group consisted of generally healthy children (n = 19). Samples (stool and nasopharyngeal swabs) were collected in late spring to ensure an antibiotic-free period. Detailed metadata was gathered through a questionnaire examining factors potentially influencing microbiota. Microbiota composition was assessed through amplicon sequencing of the V3-V4 region of the 16S rRNA gene. Our findings revealed limited alterations in gut microbiota composition among children with rAOM compared to healthy controls. Six bacterial taxa (Veillonella, Lachnospiraceae, Ruminococcaceae, Lachnospiraceae, Bacteroides and Blautia) were differentially represented with weak statistical significance. However, several bacterial taxa displayed correlations with multiple consecutive infections, with Turicibacter showing the most significant association. Additionally, day care centre attendance emerged as a potent gut microbiota modifier, independent of rAOM. Although our study identified limited differences in gut microbiota composition between children with rAOM and healthy controls, the observed correlations between the number of infections and specific bacterial taxa suggest a potential link between rAOM and the gut microbiota, warranting further investigation.
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Affiliation(s)
- Andrej Florjan
- Department of Otorhinolaryngology and Cervicofacial Surgery, General Hospital Celje, Oblakova ulica 5, 3000, Celje, Slovenia
| | - Maja Rupnik
- Department for Microbiological Research, National Laboratory of Health, Environment and Food, Prvomajska ulica 1, 2000, Maribor, Slovenia
- Department of Microbiology, Faculty of Medicine, University of Maribor, Taborska ulica 8, 2000, Maribor, Slovenia
| | - Aleksander Mahnic
- Department for Microbiological Research, National Laboratory of Health, Environment and Food, Prvomajska ulica 1, 2000, Maribor, Slovenia.
- Department of Microbiology, Faculty of Medicine, University of Maribor, Taborska ulica 8, 2000, Maribor, Slovenia.
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12
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Shan L, Chelliah R, Rahman SME, Hwan Oh D. Unraveling the gut microbiota's role in Rheumatoid arthritis: dietary pathways to modulation and therapeutic potential. Crit Rev Food Sci Nutr 2024:1-11. [PMID: 38832654 DOI: 10.1080/10408398.2024.2362412] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/05/2024]
Abstract
Rheumatoid arthritis (RA) is a significant global health issue. Recent research highlights the gut microbiota's critical role in RA's development, noting how dietary factors can alter these microbial communities. This has led to an increased focus on how the gut microbiota (GM) influences RA and the potential for dietary ingredients to offer anti-RA benefits by modifying GM. This review presents a concise examination of the GM associated with RA, identifying specific microbial taxa at various levels that are implicated in the disease. It delves into dietary components known for their anti-RA properties through GM modulation and their mechanisms. Findings from numerous studies, including both animal and human research, show significant differences in the GM composition between individuals with early and established RA. Certain microbes like Tenericutes, Synergistetes, and Proteobacteria have been linked to RA progression, whereas Bacteroidetes and some strains of Lactobacillus are shown to have protective effects against RA. Dietary elements such as fibers, polysaccharides, resistant starch, and peptides have been identified as influential in combating RA. These components work by altering the GM's metabolites and impacting immune cells related to the GM. This review suggests the potential for developing functional foods aimed at treating RA by targeting GM.
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Affiliation(s)
- LingYue Shan
- Department of Food Science and Biotechnology, College of Agriculture and Life Sciences, Kangwon National University, Chuncheon, Republic of South Korea
- Future F Biotech Co., Ltd, Chuncheon, Republic of South Korea
| | - Ramachandran Chelliah
- Department of Food Science and Biotechnology, College of Agriculture and Life Sciences, Kangwon National University, Chuncheon, Republic of South Korea
- Future F Biotech Co., Ltd, Chuncheon, Republic of South Korea
| | - Syed Mohammad Ehsanur Rahman
- Department of Food Science and Biotechnology, College of Agriculture and Life Sciences, Kangwon National University, Chuncheon, Republic of South Korea
- Department of Animal Science, Bangladesh Agricultural University, Mymensingh, Bangladesh
| | - Deog Hwan Oh
- Department of Food Science and Biotechnology, College of Agriculture and Life Sciences, Kangwon National University, Chuncheon, Republic of South Korea
- Future F Biotech Co., Ltd, Chuncheon, Republic of South Korea
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13
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Gu Q, Jiang Z, Li K, Li Y, Yan X, McClements DJ, Ma C, Liu F. Effectiveness of probiotic- and fish oil-loaded water-in-oil-in-water (W 1/O/W 2) emulsions at alleviating ulcerative colitis. Food Funct 2024; 15:5797-5812. [PMID: 38747250 DOI: 10.1039/d4fo00258j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/05/2024]
Abstract
Ulcerative colitis (UC) is a common chronic inflammatory disease that causes serious harm to human health. Probiotics have the effect of improving UC. This study evaluated the preventative potential of water-in-oil-in-water (W1/O/W2) emulsions containing both probiotics and fish oil on UC and associated anxiety-like behavior using a mice model. UC model was established in mice by administering dextran sulfate sodium salt (DSS). Free probiotics, probiotic-loaded emulsions, or fish oil and probiotic co-loaded emulsions were then orally administered to the mice. Various bioassays, histological studies, 16s rDNA gene sequencing, and behavioral experiments were conducted to assess changes in the intestinal environment, microbiota, and anxiety-like behavior of the mice. The fish oil and probiotic co-loaded emulsions significantly reduced the inflammatory response by enhancing tight junction protein secretion (ZO-1, Occludin, and Claudin-1), inhibiting pro-inflammatory factors (TNF-α, and IL-1β), and promoting short-chain fatty acids (SCFAs) production. These emulsions also modified the gut microbiota by promoting beneficial bacteria and suppressing pathogenic bacteria, thereby restoring a balanced gut microbiota. Notably, the emulsions containing both probiotics and fish oil also ameliorated anxiety-like behavior in the mice. The co-delivery of probiotics and fish oil using W1/O/W2 emulsions has shown significant promise in relieving UC and its associated anxiety-like behavior. These findings provide novel insights into the development of advanced therapeutic strategies for treating UC.
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Affiliation(s)
- Qingzhuo Gu
- College of Food Science and Engineering, Northwest A&F University, Yangling, 712100, Shaanxi, China.
| | - Zhaowei Jiang
- College of Food Science and Engineering, Northwest A&F University, Yangling, 712100, Shaanxi, China.
| | - Kun Li
- College of Food Science and Engineering, Northwest A&F University, Yangling, 712100, Shaanxi, China.
| | - Yueting Li
- College of Food Science and Engineering, Northwest A&F University, Yangling, 712100, Shaanxi, China.
| | - Xiaojia Yan
- College of Food Science and Engineering, Northwest A&F University, Yangling, 712100, Shaanxi, China.
| | | | - Cuicui Ma
- College of Food Science and Engineering, Northwest A&F University, Yangling, 712100, Shaanxi, China.
| | - Fuguo Liu
- College of Food Science and Engineering, Northwest A&F University, Yangling, 712100, Shaanxi, China.
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14
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Liu Q, Shi K, Bai Y, Yang F, Lei C, Wang X, Hu Y, Wang S, Wang R, Yu Y, Liu X, Yu X, Zhang L, Tang L, Li S, Meng Q. Biology of tongue coating in different disease stages of RA and its value in disease progression. Microb Pathog 2024; 191:106644. [PMID: 38616001 DOI: 10.1016/j.micpath.2024.106644] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2024] [Revised: 04/04/2024] [Accepted: 04/10/2024] [Indexed: 04/16/2024]
Abstract
OBJECTIVE To assess and compare the composition of tongue coating microbiota among patients at different stages of rheumatoid arthritis (RA). METHODS A total of 47 patients diagnosed with RA, as per the American College of Rheumatology criteria, and 10 healthy individuals were enrolled in this study. The RA patients were stratified considering their Disease Activity Score 28 (DAS28), a composite measure based on the 28 tender and swollen joint count and erythrocyte sedimentation rate (ESR). The study population was further categorized into active phase group (LMH group) and inactive phase group (RE group) according to their DAS28 values. DNA extraction was extracted from tongue coating samples. Subsequently, the V3-V4 16S rDNA region was selectively amplified and sequenced through high-throughput 16S rDNA analysis. The resulting data were then utilized to ascertain the microbial contents. RESULTS Significant variations were observed in the tongue coating microbiota of patients with RA during active and inactive phases, in comparison to healthy individuals (p < 0.05). At the genus level, the presence of Prevotellan, Veillonella, Rothia, and Neisseria in RA patients was notably more evident than in the healthy control (HC) group. These disparities find support in existing research on gut and oral microbiota. During the active phase of RA, the relative abundance of Veillonella, Rothia, and Neisseria in the tongue coating microbiota of patients was significantly higher than in those with inactive RA. These findings underscore the need for further and in-depth research on the potential impact of these microorganisms on the progression of RA disease. CONCLUSION The results substantiate the hypothesis that tongue coating microbes actively contribute to the progression of RA.
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Affiliation(s)
- Qian Liu
- School of Traditional Chinese Medicine, Beijing University of Chinese Medicine, Beijing, China
| | - Kangle Shi
- School of Artificial Intelligence, University of Chinese Academy of Sciences, Beijing, China.
| | - Yunjing Bai
- Department of Rheumatism and Immunology, Seventh Medical Center of PLA General Hospital, Beijing, China
| | - Fangyan Yang
- School of Traditional Chinese Medicine, Beijing University of Chinese Medicine, Beijing, China
| | - Cong Lei
- School of Basic Medicine, Heilongjiang University of Chinese Medicine, China
| | - Xiaocong Wang
- School of Traditional Chinese Medicine, Beijing University of Chinese Medicine, Beijing, China
| | - Ying Hu
- School of Traditional Chinese Medicine, Beijing University of Chinese Medicine, Beijing, China
| | - Shiyao Wang
- School of Traditional Chinese Medicine, Beijing University of Chinese Medicine, Beijing, China
| | - Ruikun Wang
- School of Traditional Chinese Medicine, Beijing University of Chinese Medicine, Beijing, China
| | - Yuefan Yu
- School of Traditional Chinese Medicine, Beijing University of Chinese Medicine, Beijing, China
| | - Xiaoyu Liu
- School of Traditional Chinese Medicine, Beijing University of Chinese Medicine, Beijing, China; Department of Nephropathy and Endocrinology, Dongzhimen Hospital of Beijing University of Chinese Medicine, Beijing, China
| | - Xinping Yu
- School of Traditional Chinese Medicine, Beijing University of Chinese Medicine, Beijing, China
| | - Lingling Zhang
- Department of Rheumatology and Clinical Immunology, Beijing Shijitan Hospital, Capital Medical University, China
| | - Ling Tang
- Nursing Department, DongFang Hospital of Beijing University of Chinese Medicine, China
| | - Suqian Li
- Department of Rheumatism, DongFang Hospital of Beijing University of Chinese Medicine, China
| | - Qinggang Meng
- School of Traditional Chinese Medicine, Beijing University of Chinese Medicine, Beijing, China.
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15
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Bixio R, Bertelle D, Bertoldo E, Morciano A, Rossini M. The potential pathogenic role of gut microbiota in rheumatic diseases: a human-centred narrative review. Intern Emerg Med 2024; 19:891-900. [PMID: 38141117 DOI: 10.1007/s11739-023-03496-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/24/2023] [Accepted: 11/23/2023] [Indexed: 12/24/2023]
Abstract
A growing amount of evidence suggests that gut microbiota plays an important role in human health, including a possible role in the pathogenesis of rheumatic and musculoskeletal diseases (RMD). We analysed the current evidence about the role of microbiota in rheumatoid arthritis (RA), spondyloarthritis (SpA), systemic lupus erythematosus (SLE) and systemic sclerosis (SSc). In RA, we found a general consensus regarding a reduction of diversity and a specific bacterial signature, with consistent changes according to the different ethnic and geographical areas. The major pathogenetic role in RA is recognised for P. copri, L. salivarius and Collinsella, even if findings become more heterogeneous when considering established disease. In SpA, we found a relative gut abundance of Akkermansia, Coprococcus, Ruminoccocus and a relative reduction in Bacterioides and Firmicutes spp. Human and preclinical data suggest loss of mucosal barrier, increased permeability and Th1- and Th17-mediated inflammation. Additionally, HLA-B27 seems to play a role in shaping the intestinal microbiota and the consequent inflammation. In SLE, the typical gut microbiota signature was characterised by a reduction in the Firmicutes/Bacteroidetes ratio and by enrichment of Rhodococcus, Eggerthella, Klebsiella, Prevotella, Eubacterium and Flavonifractor, even if their real pathogenic impact remains unclear. In SSc, gastrointestinal dysbiosis is well documented with an increase of pro-inflammatory species (Fusobacterium, Prevotella, Ruminococcus, Akkermansia, γ-Proteobacteria, Erwinia, Trabsulsiella, Bifidobacterium, Lactobacillus, Firmicutes and Actinobacteria) and a reduction of species as Faecalibacterium, Clostridium, Bacteroidetes and Rikenella. In conclusion, seems possible to recognise a distinct gut microbiota profile for each RMD, even if significant differences in bacterial species do exist between different studies and there is a high risk of bias due to the cross-sectional nature of such studies. Therefore longitudinal studies are needed, especially on patients with preclinical and early disease, to investigate the real role of gut microbiota in the pathogenesis of RMD.
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Affiliation(s)
- Riccardo Bixio
- Rheumatology Section, Department of Medicine, University of Verona, P.Le L.A. Scuro 10, 37134, Verona, Italy.
| | - Davide Bertelle
- Rheumatology Section, Department of Medicine, University of Verona, P.Le L.A. Scuro 10, 37134, Verona, Italy
- Rheumatology Section, Department of Medicine, Azienda Ospedaliera Friuli Occidentale, Pordenone, Italy
| | - Eugenia Bertoldo
- Rheumatology Section, Department of Medicine, University of Verona, P.Le L.A. Scuro 10, 37134, Verona, Italy
- Internal Medicine Unit, Department of Medicine, Mater Salutis Hospital, Legnago, Italy
| | - Andrea Morciano
- Rheumatology Section, Department of Medicine, University of Verona, P.Le L.A. Scuro 10, 37134, Verona, Italy
| | - Maurizio Rossini
- Rheumatology Section, Department of Medicine, University of Verona, P.Le L.A. Scuro 10, 37134, Verona, Italy
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16
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Wolter M, Grant ET, Boudaud M, Pudlo NA, Pereira GV, Eaton KA, Martens EC, Desai MS. Diet-driven differential response of Akkermansia muciniphila modulates pathogen susceptibility. Mol Syst Biol 2024; 20:596-625. [PMID: 38745106 PMCID: PMC11148096 DOI: 10.1038/s44320-024-00036-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2023] [Revised: 04/06/2024] [Accepted: 04/12/2024] [Indexed: 05/16/2024] Open
Abstract
The erosion of the colonic mucus layer by a dietary fiber-deprived gut microbiota results in heightened susceptibility to an attaching and effacing pathogen, Citrobacter rodentium. Nevertheless, the questions of whether and how specific mucolytic bacteria aid in the increased pathogen susceptibility remain unexplored. Here, we leverage a functionally characterized, 14-member synthetic human microbiota in gnotobiotic mice to deduce which bacteria and functions are responsible for the pathogen susceptibility. Using strain dropouts of mucolytic bacteria from the community, we show that Akkermansia muciniphila renders the host more vulnerable to the mucosal pathogen during fiber deprivation. However, the presence of A. muciniphila reduces pathogen load on a fiber-sufficient diet, highlighting the context-dependent beneficial effects of this mucin specialist. The enhanced pathogen susceptibility is not owing to altered host immune or pathogen responses, but is driven by a combination of increased mucus penetrability and altered activities of A. muciniphila and other community members. Our study provides novel insights into the mechanisms of how discrete functional responses of the same mucolytic bacterium either resist or enhance enteric pathogen susceptibility.
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Affiliation(s)
- Mathis Wolter
- Department of Infection and Immunity, Luxembourg Institute of Health, Esch-sur-Alzette, Luxembourg
- Faculty of Science, Technology and Medicine, University of Luxembourg, Esch-sur-Alzette, Luxembourg
| | - Erica T Grant
- Department of Infection and Immunity, Luxembourg Institute of Health, Esch-sur-Alzette, Luxembourg
- Faculty of Science, Technology and Medicine, University of Luxembourg, Esch-sur-Alzette, Luxembourg
| | - Marie Boudaud
- Department of Infection and Immunity, Luxembourg Institute of Health, Esch-sur-Alzette, Luxembourg
| | - Nicholas A Pudlo
- Department of Microbiology and Immunology, University of Michigan Medical School, Ann Arbor, MI, USA
| | - Gabriel V Pereira
- Department of Microbiology and Immunology, University of Michigan Medical School, Ann Arbor, MI, USA
| | - Kathryn A Eaton
- Department of Microbiology and Immunology, University of Michigan Medical School, Ann Arbor, MI, USA
| | - Eric C Martens
- Department of Microbiology and Immunology, University of Michigan Medical School, Ann Arbor, MI, USA
| | - Mahesh S Desai
- Department of Infection and Immunity, Luxembourg Institute of Health, Esch-sur-Alzette, Luxembourg.
- Odense Research Center for Anaphylaxis, Department of Dermatology and Allergy Center, Odense University Hospital, University of Southern Denmark, Odense, Denmark.
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17
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Mohr AE, Sweazea KL, Bowes DA, Jasbi P, Whisner CM, Sears DD, Krajmalnik-Brown R, Jin Y, Gu H, Klein-Seetharaman J, Arciero KM, Gumpricht E, Arciero PJ. Gut microbiome remodeling and metabolomic profile improves in response to protein pacing with intermittent fasting versus continuous caloric restriction. Nat Commun 2024; 15:4155. [PMID: 38806467 PMCID: PMC11133430 DOI: 10.1038/s41467-024-48355-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2023] [Accepted: 04/26/2024] [Indexed: 05/30/2024] Open
Abstract
The gut microbiome (GM) modulates body weight/composition and gastrointestinal functioning; therefore, approaches targeting resident gut microbes have attracted considerable interest. Intermittent fasting (IF) and protein pacing (P) regimens are effective in facilitating weight loss (WL) and enhancing body composition. However, the interrelationships between IF- and P-induced WL and the GM are unknown. The current randomized controlled study describes distinct fecal microbial and plasma metabolomic signatures between combined IF-P (n = 21) versus a heart-healthy, calorie-restricted (CR, n = 20) diet matched for overall energy intake in free-living human participants (women = 27; men = 14) with overweight/obesity for 8 weeks. Gut symptomatology improves and abundance of Christensenellaceae microbes and circulating cytokines and amino acid metabolites favoring fat oxidation increase with IF-P (p < 0.05), whereas metabolites associated with a longevity-related metabolic pathway increase with CR (p < 0.05). Differences indicate GM and metabolomic factors play a role in WL maintenance and body composition. This novel work provides insight into the GM and metabolomic profile of participants following an IF-P or CR diet and highlights important differences in microbial assembly associated with WL and body composition responsiveness. These data may inform future GM-focused precision nutrition recommendations using larger sample sizes of longer duration. Trial registration, March 6, 2020 (ClinicalTrials.gov as NCT04327141), based on a previous randomized intervention trial.
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Affiliation(s)
- Alex E Mohr
- College of Health Solutions, Arizona State University, Phoenix, AZ, USA
- Biodesign Institute Center for Health Through Microbiomes, Arizona State University, Tempe, AZ, USA
| | - Karen L Sweazea
- College of Health Solutions, Arizona State University, Phoenix, AZ, USA
- Biodesign Institute Center for Health Through Microbiomes, Arizona State University, Tempe, AZ, USA
- Center for Evolution and Medicine, College of Liberal Arts and Sciences, Arizona State University, Tempe, AZ, USA
| | - Devin A Bowes
- Biodesign Institute Center for Health Through Microbiomes, Arizona State University, Tempe, AZ, USA
| | - Paniz Jasbi
- School of Molecular Sciences, Arizona State University, Tempe, AZ, USA
- Systems Precision Engineering and Advanced Research (SPEAR), Theriome Inc., Phoenix, AZ, USA
| | - Corrie M Whisner
- College of Health Solutions, Arizona State University, Phoenix, AZ, USA
- Biodesign Institute Center for Health Through Microbiomes, Arizona State University, Tempe, AZ, USA
| | - Dorothy D Sears
- College of Health Solutions, Arizona State University, Phoenix, AZ, USA
| | - Rosa Krajmalnik-Brown
- Biodesign Institute Center for Health Through Microbiomes, Arizona State University, Tempe, AZ, USA
| | - Yan Jin
- Center of Translational Science, Florida International University, Port St. Lucie, FL, USA
| | - Haiwei Gu
- College of Health Solutions, Arizona State University, Phoenix, AZ, USA
- Center of Translational Science, Florida International University, Port St. Lucie, FL, USA
| | - Judith Klein-Seetharaman
- College of Health Solutions, Arizona State University, Phoenix, AZ, USA
- School of Molecular Sciences, Arizona State University, Tempe, AZ, USA
| | - Karen M Arciero
- Human Nutrition and Metabolism Laboratory, Department of Health and Human Physiological Sciences, Skidmore College, Saratoga Springs, NY, USA
| | | | - Paul J Arciero
- Human Nutrition and Metabolism Laboratory, Department of Health and Human Physiological Sciences, Skidmore College, Saratoga Springs, NY, USA.
- School of Health and Rehabilitation Sciences, Department of Sports Medicine and Nutrition, University of Pittsburgh, Pittsburgh, PA, USA.
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18
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Pérez-Pérez ME, Nieto-Torres E, Bollain-y-Goytia JJ, Delgadillo-Ruíz L. Protein Citrullination by Peptidyl Arginine Deiminase/Arginine Deiminase Homologs in Members of the Human Microbiota and Its Recognition by Anti-Citrullinated Protein Antibodies. Int J Mol Sci 2024; 25:5192. [PMID: 38791230 PMCID: PMC11121387 DOI: 10.3390/ijms25105192] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2024] [Revised: 05/01/2024] [Accepted: 05/04/2024] [Indexed: 05/26/2024] Open
Abstract
The human microbiome exists throughout the body, and it is essential for maintaining various physiological processes, including immunity, and dysbiotic events, which are associated with autoimmunity. Peptidylarginine deiminase (PAD) enzymes can citrullinate self-proteins related to rheumatoid arthritis (RA) that induce the production of anti-citrullinated protein antibodies (ACPAs) and lead to inflammation and joint damage. The present investigation was carried out to demonstrate the expression of homologs of PADs or arginine deiminases (ADs) and citrullinated proteins in members of the human microbiota. To achieve the objective, we used 17 microbial strains and specific polyclonal antibodies (pAbs) of the synthetic peptide derived from residues 100-200 of human PAD2 (anti-PAD2 pAb), and the recombinant fragment of amino acids 326 and 611 of human PAD4 (anti-PAD4 pAb), a human anti-citrulline pAb, and affinity ACPAs of an RA patient. Western blot (WB), enzyme-linked immunosorbent assay (ELISA), elution, and a test with Griess reagent were used. This is a cross-sectional case-control study on patients diagnosed with RA and control subjects. Inferential statistics were applied using the non-parametric Kruskal-Wallis test and Mann-Whitney U test generated in the SPSS program. Some members of phyla Firmicutes and Proteobacteria harbor homologs of PADs/ADs and citrullinated antigens that are reactive to the ACPAs of RA patients. Microbial citrullinome and homolog enzymes of PADs/ADs are extensive in the human microbiome and are involved in the production of ACPAs. Our findings suggest a molecular link between microorganisms of a dysbiotic microbiota and RA pathogenesis.
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Affiliation(s)
- María-Elena Pérez-Pérez
- PhD in Basic Science with Biological Orientation, Academic Unit of Biological Sciences, Universidad Autónoma de Zacatecas, Zacatecas 98066, Mexico; (M.-E.P.-P.); (L.D.-R.)
- Department of Immunology and Molecular Biology, Academic Unit of Biological Sciences, Universidad Autónoma de Zacatecas, Guadalupe, Zacatecas 98615, Mexico
| | - Enrique Nieto-Torres
- Academic Unit of Human Medicine and Health Sciences, Universidad Autónoma de Zacatecas, Zacatecas 98160, Mexico;
| | - Juan-José Bollain-y-Goytia
- PhD in Basic Science with Biological Orientation, Academic Unit of Biological Sciences, Universidad Autónoma de Zacatecas, Zacatecas 98066, Mexico; (M.-E.P.-P.); (L.D.-R.)
- Department of Immunology and Molecular Biology, Academic Unit of Biological Sciences, Universidad Autónoma de Zacatecas, Guadalupe, Zacatecas 98615, Mexico
| | - Lucía Delgadillo-Ruíz
- PhD in Basic Science with Biological Orientation, Academic Unit of Biological Sciences, Universidad Autónoma de Zacatecas, Zacatecas 98066, Mexico; (M.-E.P.-P.); (L.D.-R.)
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Jiang C, Chi S, Wang F, Zhao C, Yang X, Liu M, Ma B, Chen J, Su C, Duan X. The changes of intestinal flora and its relevance with memory Tfh and B cells in rheumatoid arthritis patients treated with csDMARDs and csDMARDs + bDMARDs. Immunobiology 2024; 229:152798. [PMID: 38537424 DOI: 10.1016/j.imbio.2024.152798] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2023] [Revised: 02/02/2024] [Accepted: 03/20/2024] [Indexed: 06/05/2024]
Abstract
BACKGROUND A growing body of experimental and clinical evidence has implicated gut microbiota in the onset and course of rheumatoid arthritis (RA). The imbalance of intestinal flora in RA patients may lead to abnormal expression of immune cells and related cytokines. PURPOSE Conventional synthetic disease-modifying antirheumatic drugs (csDMARDs) and conventional synthetic disease-modifying antirheumatic drugs combined with biological disease-modifying antirheumatic drugs (csDMARDs + bDMARDs) are widely used to treat RA, but the characteristics of gut microbiota before and after treatment and their relationship with memory Tfh/B cells and cytokines remain unclear. METHODS Stool samples were collected from 50 RA patients and 25 healthy controls (HCs) for 16SrRNA gene sequencing. We examined the proportion of lymphocyte subsets in healthy controls and RA patients. Enzyme linked immunosorbent assay (ELISA) was used to detect the levels of related cytokines in serum. The α and β diversity of intestinal flora, and the correlation between intestinal flora and clinical indicators, lymphocyte subsets, cytokines were analyzed. RESULT At the genus level, Ruminococcaceae_Ruminococcus was decreased in the csDMARDs and csDMARDs + bDMARDs treatment group, whereas Faecalibacterium was reduced in the csDMARDs treatment group, compared to untreated group. CD4+CD45RO+CCR7+CXCR5+central memory Tfh cells and CD4+CD45RO+CCR7-CXCR5+effector memory Tfh cells were significantly lower in the csDMARDs + bDMARDs treatment group than in untreated group. CD19+CD27+IgD+pre-switched memory B cells were higher in the csDMARDs and csDMARDs + bDMARDs treatment groups, whereas CD19+CD27+IgD-switched memory B cells were significantly lower than in untreated group. Ruminococcaceae_Ruminococcus was negatively correlated with CD19+CD27+IgD+ pre-switched memory B cells but positively correlated with CD4+CD45RO+CCR7-CXCR5+effector memory Tfh and CD19+CD27+IgD-switched memory B cells in patients with RA treated with DMARDs. CONCLUSION The gut microbiota, memory Tfh cells, memory B cells, and cytokines of patients with RA changed significantly under different treatment regimens and had certain correlations with the clinical indicators of RA.
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Affiliation(s)
- Chunlei Jiang
- The First School of Clinical Medicine, Ningxia Medical University, Yinchuan, China; Department of Rheumatology, General Hospital of Ningxia Medical University, Yinchuan, China
| | - Shuhong Chi
- The First School of Clinical Medicine, Ningxia Medical University, Yinchuan, China; Department of Rheumatology, General Hospital of Ningxia Medical University, Yinchuan, China.
| | - Fengkui Wang
- Department of Nuclear Medicine, General Hospital of Ningxia Medical University, Yinchuan, China
| | - Chenyang Zhao
- School of Basic Medical Sciences, Ningxia Medical University, Yinchuan, China
| | - Xiaojuan Yang
- School of Basic Medical Sciences, Ningxia Medical University, Yinchuan, China
| | - Miao Liu
- The First School of Clinical Medicine, Ningxia Medical University, Yinchuan, China
| | - Bin Ma
- Department of Oncology Surgery, The First People's Hospital of Yinchuan, Yinchuan, China
| | | | - Chunxia Su
- School of Basic Medical Sciences, Ningxia Medical University, Yinchuan, China.
| | - Xiangguo Duan
- School of Inspection, Ningxia Medical University, China.
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20
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Li H, Huang Y, Liang L, Li H, Li S, Feng Y, Feng S, Wu K, Wu F. The relationship between the gut microbiota and oxidative stress in the cognitive function of schizophrenia: A pilot study in China. Schizophr Res 2024; 267:444-450. [PMID: 38643725 DOI: 10.1016/j.schres.2024.03.053] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/27/2023] [Revised: 03/22/2024] [Accepted: 03/31/2024] [Indexed: 04/23/2024]
Abstract
Cognitive impairment is a core symptom of schizophrenia. The gut microbiota (GM) and oxidative stress may play important roles in the pathophysiological mechanisms of cognitive impairment. This study aimed to explore the relationship between GM and oxidative stress in the cognitive function of schizophrenia. GM obtained by 16S RNA sequencing and serum superoxide dismutase (SOD) levels from schizophrenia patients (N = 68) and healthy controls (HCs, N = 72) were analyzed. All psychiatric symptoms were assessed using the Positive and Negative Syndrome Scale (PANSS). Cognitive function was assessed using the MATRICS Consensus Cognitive Battery (MCCB). Correlation analysis was used to explore the relationship between GM, SOD, and cognitive function. Machine learning models were used to identify potential biomarkers. Compared to HCs, the relative abundances of Collinsella, undefined Ruminococcus, Lactobacillus, Eubacterium, Mogibacterium, Desulfovibrio, Bulleidia, Succinivibrio, Corynebacterium, and Atopobium were higher in patients with schizophrenia, but Faecalibacterium, Anaerostipes, Turicibacter, and Ruminococcus were lower. In patients with schizophrenia, the positive factor, general factor, and total score of MCCB positively correlated with Lactobacillus, Collinsella, and Lactobacillus, respectively; SOD negatively correlated with Eubacterium, Collinsella, Lactobacillus, Corynebacterium, Bulleidia, Mogibacterium, and Succinivibrio, but positively correlated with Faecalibacterium, Ruminococcus, and MCCB verbal learning index scores; Faecalibacterium and Turicibacter were positively correlated with MCCB visual learning index scores and speed of processing index scores, respectively. Our findings revealed a correlation between SOD and GM and confirmed that cognitive dysfunction in patients with schizophrenia involves abnormal SOD levels and GM changes.
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Affiliation(s)
- Hehua Li
- The Affiliated Brain Hospital of Guangzhou Medical University, Guangzhou, China
| | - Yuanyuan Huang
- The Affiliated Brain Hospital of Guangzhou Medical University, Guangzhou, China
| | - Liqin Liang
- School of Biomedical Sciences and Engineering, South China University of Technology, Guangzhou International Campus, Guangzhou, China
| | - Hanqiu Li
- The Affiliated Brain Hospital of Guangzhou Medical University, Guangzhou, China
| | - Shijia Li
- Swammerdam Institute for Life Sciences (SILS)-University of Amsterdam, Amsterdam, the Netherlands
| | - Yangdong Feng
- The Affiliated Brain Hospital of Guangzhou Medical University, Guangzhou, China
| | - Shixuan Feng
- The Affiliated Brain Hospital of Guangzhou Medical University, Guangzhou, China
| | - Kai Wu
- School of Biomedical Sciences and Engineering, South China University of Technology, Guangzhou International Campus, Guangzhou, China; Guangdong Engineering Technology Research Center for Translational Medicine of Mental Disorders, Guangzhou, China.
| | - Fengchun Wu
- The Affiliated Brain Hospital of Guangzhou Medical University, Guangzhou, China; Guangdong Engineering Technology Research Center for Translational Medicine of Mental Disorders, Guangzhou, China; Key Laboratory of Neurogenetics and Channelopathies of Guangdong Province and the Ministry of Education of China, Guangzhou Medical University, Guangzhou, China.
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21
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Tomas M, García-Pérez P, Rivera-Pérez A, Patrone V, Giuberti G, Lucini L, Capanoglu E. The addition of polysaccharide gums to Aronia melanocarpa purees modulates the bioaccessibility of phenolic compounds and gut microbiota: A multiomics data fusion approach following in vitro digestion and fermentation. Food Chem 2024; 439:138231. [PMID: 38113658 DOI: 10.1016/j.foodchem.2023.138231] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2023] [Revised: 12/11/2023] [Accepted: 12/15/2023] [Indexed: 12/21/2023]
Abstract
This study aimed to determine how the addition of gellan, guar, locust bean, and xanthan gums affected the polyphenol profile of Aronia melanocarpa puree and the human gut microbiota after in vitro gastrointestinal digestion and large intestine fermentation. The different gums distinctively affected the content and bioaccessibility of phenolics in Aronia puree, as outlined by untargeted metabolomics. The addition of locust bean gum increased the levels of low-molecular-weight phenolics and phenolic acids after digestion. Gellan and guar gums enhanced phenolic acids' bioaccessibility after fermentation. Interactions between digestion products and fecal bacteria altered the composition of the microbiota, with the greatest impact of xanthan. Locust bean gum promoted the accumulation of different taxa with health-promoting properties. Our findings shed light on the added-value properties of commercial gums as food additives, promoting a distinctive increase of polyphenol bioaccessibility and shifting the gut microbiota distribution, depending on their composition and structural features.
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Affiliation(s)
- Merve Tomas
- Department of Food Engineering, Faculty of Engineering and Natural Sciences, Istanbul Sabahattin Zaim University, 34303 Halkali, Istanbul, Turkey
| | - Pascual García-Pérez
- Department for Sustainable Food Process - DiSTAS, Università Cattolica del Sacro Cuore, Via Emilia Parmense 84, 29122 Piacenza, Italy; Universidade de Vigo, Nutrition and Bromatology Group, Department of Analytical Chemistry and Food Science, Instituto de Agroecoloxía e Alimentación (IAA) - CITEXVI, 36310 Vigo, Spain
| | - Araceli Rivera-Pérez
- Research Group "Analytical Chemistry of Contaminants", Department of Chemistry and Physics, Research Centre for Mediterranean Intensive Agrosystems and Agrifood Biotechnology (CIAIMBITAL), Agrifood Campus of International Excellence (ceiA3), University of Almeria, 04120 Almeria, Spain
| | - Vania Patrone
- Department for Sustainable Food Process - DiSTAS, Università Cattolica del Sacro Cuore, Via Emilia Parmense 84, 29122 Piacenza, Italy
| | - Gianluca Giuberti
- Department for Sustainable Food Process - DiSTAS, Università Cattolica del Sacro Cuore, Via Emilia Parmense 84, 29122 Piacenza, Italy
| | - Luigi Lucini
- Department for Sustainable Food Process - DiSTAS, Università Cattolica del Sacro Cuore, Via Emilia Parmense 84, 29122 Piacenza, Italy.
| | - Esra Capanoglu
- Department of Food Engineering, Faculty of Chemical and Metallurgical Engineering, Istanbul Technical University, 34469 Maslak, Istanbul, Turkey
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22
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Yousefi Y, Baines KJ, Maleki Vareki S. Microbiome bacterial influencers of host immunity and response to immunotherapy. Cell Rep Med 2024; 5:101487. [PMID: 38547865 PMCID: PMC11031383 DOI: 10.1016/j.xcrm.2024.101487] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2023] [Revised: 12/21/2023] [Accepted: 03/04/2024] [Indexed: 04/19/2024]
Abstract
The gut microbiota influences anti-tumor immunity and can induce or inhibit response to immune checkpoint inhibitors (ICIs). Therefore, microbiome features are being studied as predictive/prognostic biomarkers of patient response to ICIs, and microbiome-based interventions are attractive adjuvant treatments in combination with ICIs. Specific gut-resident bacteria can influence the effectiveness of immunotherapy; however, the mechanism of action on how these bacteria affect anti-tumor immunity and response to ICIs is not fully understood. Nevertheless, early bacterial-based therapeutic strategies have demonstrated that targeting the gut microbiome through various methods can enhance the effectiveness of ICIs, resulting in improved clinical responses in patients with a diverse range of cancers. Therefore, understanding the microbiota-driven mechanisms of response to immunotherapy can augment the success of these interventions, particularly in patients with treatment-refractory cancers.
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Affiliation(s)
- Yeganeh Yousefi
- Verspeeten Family Cancer Centre, Lawson Health Research Institute, London, ON N6A 5W9, Canada
| | - Kelly J Baines
- Verspeeten Family Cancer Centre, Lawson Health Research Institute, London, ON N6A 5W9, Canada; Department of Pathology and Laboratory Medicine, Western University, London, ON N6A 3K7, Canada
| | - Saman Maleki Vareki
- Verspeeten Family Cancer Centre, Lawson Health Research Institute, London, ON N6A 5W9, Canada; Department of Pathology and Laboratory Medicine, Western University, London, ON N6A 3K7, Canada; Department of Oncology, Western University, London, ON N6A 3K7, Canada.
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23
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Wu H, Ma W, Wang Y, Wang Y, Sun X, Zheng Q. Gut microbiome-metabolites axis: A friend or foe to colorectal cancer progression. Biomed Pharmacother 2024; 173:116410. [PMID: 38460373 DOI: 10.1016/j.biopha.2024.116410] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2024] [Accepted: 03/06/2024] [Indexed: 03/11/2024] Open
Abstract
An expanding corpus of research robustly substantiates the complex interrelation between gut microbiota and the onset, progression, and metastasis of colorectal cancer. Investigations in both animal models and human subjects have consistently underscored the role of gut bacteria in a variety of metabolic activities, driven by dietary intake. These activities include amino acid metabolism, carbohydrate fermentation, and the generation and regulation of bile acids. These metabolic derivatives, in turn, have been identified as significant contributors to the progression of colorectal cancer. This thorough review meticulously explores the dynamic interaction between gut bacteria and metabolites derived from the breakdown of amino acids, fatty acid metabolism, and bile acid synthesis. Notably, bile acids have been recognized for their potential carcinogenic properties, which may expedite tumor development. Extensive research has revealed a reciprocal influence of gut microbiota on the intricate spectrum of colorectal cancer pathologies. Furthermore, strategies to modulate gut microbiota, such as dietary modifications or probiotic supplementation, may offer promising avenues for both the prevention and adjunctive treatment of colorectal cancer. Nevertheless, additional research is imperative to corroborate these findings and enhance our comprehension of the underlying mechanisms in colorectal cancer development.
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Affiliation(s)
- Hao Wu
- Department of Immunology, Basic Medicine College, China Medical University, No.77 Puhe Road, Shenyang North New Area, Shenyang, Liaoning Province, PR China
| | - Wenmeng Ma
- Department of Immunology, Basic Medicine College, China Medical University, No.77 Puhe Road, Shenyang North New Area, Shenyang, Liaoning Province, PR China
| | - Yiyao Wang
- Department of Immunology, Basic Medicine College, China Medical University, No.77 Puhe Road, Shenyang North New Area, Shenyang, Liaoning Province, PR China
| | - Yuanyuan Wang
- Department of anesthesiology, The Fourth Affiliated Hospital, China Medical University, Shenyang, Liaoning Province, PR China
| | - Xun Sun
- Department of Immunology, Basic Medicine College, China Medical University, No.77 Puhe Road, Shenyang North New Area, Shenyang, Liaoning Province, PR China.
| | - Qianqian Zheng
- Department of Pathophysiology, Basic Medicine College, China Medical University, No.77 Puhe Road, Shenyang North New Area, Shenyang, Liaoning Province, PR China.
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24
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Tian Z, Zhang X, Yao G, Jin J, Zhang T, Sun C, Wang Z, Zhang Q. Intestinal flora and pregnancy complications: Current insights and future prospects. IMETA 2024; 3:e167. [PMID: 38882493 PMCID: PMC11170975 DOI: 10.1002/imt2.167] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/09/2023] [Revised: 11/27/2023] [Accepted: 12/22/2023] [Indexed: 06/18/2024]
Abstract
Numerous studies have demonstrated the pivotal roles of intestinal microbiota in many physiopathological processes through complex interactions with the host. As a unique period in a woman's lifespan, pregnancy is characterized by changes in hormones, immunity, and metabolism. The gut microbiota also changes during this period and plays a crucial role in maintaining a healthy pregnancy. Consequently, anomalies in the composition and function of the gut microbiota, namely, gut microbiota dysbiosis, can predispose individuals to various pregnancy complications, posing substantial risks to both maternal and neonatal health. However, there are still many controversies in this field, such as "sterile womb" versus "in utero colonization." Therefore, a thorough understanding of the roles and mechanisms of gut microbiota in pregnancy and its complications is essential to safeguard the health of both mother and child. This review provides a comprehensive overview of the changes in gut microbiota during pregnancy, its abnormalities in common pregnancy complications, and potential etiological implications. It also explores the potential of gut microbiota in diagnosing and treating pregnancy complications and examines the possibility of gut-derived bacteria residing in the uterus/placenta. Our aim is to expand knowledge in maternal and infant health from the gut microbiota perspective, aiding in developing new preventive and therapeutic strategies for pregnancy complications based on intestinal microecology.
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Affiliation(s)
- Zhenyu Tian
- National Key Laboratory for Innovation and Transformation of Luobing Theory; The Key Laboratory of Cardiovascular Remodeling and Function Research, Chinese Ministry of Education, Chinese National Health Commission and Chinese Academy of Medical Sciences; Department of Cardiology Qilu Hospital of Shandong University Jinan China
| | - Xinjie Zhang
- Department of Biology University College London London UK
| | - Guixiang Yao
- National Key Laboratory for Innovation and Transformation of Luobing Theory; The Key Laboratory of Cardiovascular Remodeling and Function Research, Chinese Ministry of Education, Chinese National Health Commission and Chinese Academy of Medical Sciences; Department of Cardiology Qilu Hospital of Shandong University Jinan China
| | - Jiajia Jin
- National Key Laboratory for Innovation and Transformation of Luobing Theory; The Key Laboratory of Cardiovascular Remodeling and Function Research, Chinese Ministry of Education, Chinese National Health Commission and Chinese Academy of Medical Sciences; Department of Cardiology Qilu Hospital of Shandong University Jinan China
| | - Tongxue Zhang
- National Key Laboratory for Innovation and Transformation of Luobing Theory; The Key Laboratory of Cardiovascular Remodeling and Function Research, Chinese Ministry of Education, Chinese National Health Commission and Chinese Academy of Medical Sciences; Department of Cardiology Qilu Hospital of Shandong University Jinan China
| | - Chunhua Sun
- Department of Health Management Center, Qilu Hospital, Cheeloo College of Medicine Shandong University Jinan China
| | - Zhe Wang
- Department of Geriatrics Shandong Provincial Hospital Affiliated to Shandong First Medical University Jinan China
| | - Qunye Zhang
- National Key Laboratory for Innovation and Transformation of Luobing Theory; The Key Laboratory of Cardiovascular Remodeling and Function Research, Chinese Ministry of Education, Chinese National Health Commission and Chinese Academy of Medical Sciences; Department of Cardiology Qilu Hospital of Shandong University Jinan China
- Cardiovascular Disease Research Center of Shandong First Medical University Central Hospital Affiliated to Shandong First Medical University Jinan China
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25
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Liu B, Liu Z, Jiang T, Gu X, Yin X, Cai Z, Zou X, Dai L, Zhang B. Univariable and multivariable Mendelian randomization study identified the key role of gut microbiota in immunotherapeutic toxicity. Eur J Med Res 2024; 29:161. [PMID: 38475836 DOI: 10.1186/s40001-024-01741-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2023] [Accepted: 02/22/2024] [Indexed: 03/14/2024] Open
Abstract
BACKGROUND In cancer patients receiving immune checkpoint inhibitors (ICIs), there is emerging evidence suggesting a correlation between gut microbiota and immune-related adverse events (irAEs). However, the exact roles of gut microbiota and the causal associations are yet to be clarified. METHODS To investigate this, we first conducted a univariable bi-directional two-sample Mendelian randomization (MR) analysis. Instrumental variables (IVs) for gut microbiota were retrieved from the MiBioGen consortium (18,340 participants). GWAS summary data for irAEs were gathered from an ICIs-treated cohort with 1,751 cancer patients. Various MR analysis methods, including inverse variance weighted (IVW), MR PRESSO, maximum likelihood (ML), weighted median, weighted mode, and cML-MA-BIC, were used. Furthermore, multivariable MR (MVMR) analysis was performed to account for possible influencing instrumental variables. RESULTS Our analysis identified fourteen gut bacterial taxa that were causally associated with irAEs. Notably, Lachnospiraceae was strongly associated with an increased risk of both high-grade and all-grade irAEs, even after accounting for the effect of BMI in the MVMR analysis. Akkermansia, Verrucomicrobiaceae, and Anaerostipes were found to exert protective roles in high-grade irAEs. However, Ruminiclostridium6, Coprococcus3, Collinsella, and Eubacterium (fissicatena group) were associated with a higher risk of developing high-grade irAEs. RuminococcaceaeUCG004, and DefluviitaleaceaeUCG011 were protective against all-grade irAEs, whereas Porphyromonadaceae, Roseburia, Eubacterium (brachy group), and Peptococcus were associated with an increased risk of all-grade irAEs. CONCLUSIONS Our analysis highlights a strong causal association between Lachnospiraceae and irAEs, along with some other gut microbial taxa. These findings provide potential modifiable targets for managing irAEs and warrant further investigation.
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Affiliation(s)
- Baike Liu
- Department of General Surgery, West China Hospital, Sichuan University, Chengdu, 610041, Sichuan, People's Republic of China
- Gastric Cancer Center, West China Hospital, Sichuan University, Chengdu, 610041, Sichuan, People's Republic of China
| | - Zheran Liu
- Department of Biotherapy and National Clinical Research Center for Geriatrics, Cancer Center, West China Hospital, Sichuan University, Chengdu, Sichuan, People's Republic of China
| | - Tianxiang Jiang
- Department of General Surgery, West China Hospital, Sichuan University, Chengdu, 610041, Sichuan, People's Republic of China
- Gastric Cancer Center, West China Hospital, Sichuan University, Chengdu, 610041, Sichuan, People's Republic of China
| | - Xiangshuai Gu
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University and Collaborative Innovation Center for Biotherapy, Chengdu, 610041, Sichuan, People's Republic of China
| | - Xiaonan Yin
- Department of General Surgery, West China Hospital, Sichuan University, Chengdu, 610041, Sichuan, People's Republic of China
- Gastric Cancer Center, West China Hospital, Sichuan University, Chengdu, 610041, Sichuan, People's Republic of China
| | - Zhaolun Cai
- Department of General Surgery, West China Hospital, Sichuan University, Chengdu, 610041, Sichuan, People's Republic of China
- Gastric Cancer Center, West China Hospital, Sichuan University, Chengdu, 610041, Sichuan, People's Republic of China
| | - Xiaoqiao Zou
- Department of General Surgery, West China Hospital, Sichuan University, Chengdu, 610041, Sichuan, People's Republic of China
- Gastric Cancer Center, West China Hospital, Sichuan University, Chengdu, 610041, Sichuan, People's Republic of China
| | - Lei Dai
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University and Collaborative Innovation Center for Biotherapy, Chengdu, 610041, Sichuan, People's Republic of China.
| | - Bo Zhang
- Department of General Surgery, West China Hospital, Sichuan University, Chengdu, 610041, Sichuan, People's Republic of China.
- Gastric Cancer Center, West China Hospital, Sichuan University, Chengdu, 610041, Sichuan, People's Republic of China.
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26
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Schreiber F, Balas I, Robinson MJ, Bakdash G. Border Control: The Role of the Microbiome in Regulating Epithelial Barrier Function. Cells 2024; 13:477. [PMID: 38534321 DOI: 10.3390/cells13060477] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2024] [Revised: 03/01/2024] [Accepted: 03/03/2024] [Indexed: 03/28/2024] Open
Abstract
The gut mucosal epithelium is one of the largest organs in the body and plays a critical role in regulating the crosstalk between the resident microbiome and the host. To this effect, the tight control of what is permitted through this barrier is of high importance. There should be restricted passage of harmful microorganisms and antigens while at the same time allowing the absorption of nutrients and water. An increased gut permeability, or "leaky gut", has been associated with a variety of diseases ranging from infections, metabolic diseases, and inflammatory and autoimmune diseases to neurological conditions. Several factors can affect gut permeability, including cytokines, dietary components, and the gut microbiome. Here, we discuss how the gut microbiome impacts the permeability of the gut epithelial barrier and how this can be harnessed for therapeutic purposes.
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27
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Yang Y, Hong Q, Zhang X, Liu Z. Rheumatoid arthritis and the intestinal microbiome: probiotics as a potential therapy. Front Immunol 2024; 15:1331486. [PMID: 38510244 PMCID: PMC10950920 DOI: 10.3389/fimmu.2024.1331486] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2023] [Accepted: 02/19/2024] [Indexed: 03/22/2024] Open
Abstract
Rheumatoid arthritis (RA) is a systemic autoimmune disorder characterized by swollen joints, discomfort, stiffness, osteoporosis, and reduced functionality. Genetics, smoking, dust inhalation, high BMI, and hormonal and gut microbiota dysbiosis are all likely causes of the onset or development of RA, but the underlying mechanism remains unknown. Compared to healthy controls, patients with RA have a significantly different composition of gut microbiota. It is well known that the human gut microbiota plays a key role in the initiation, maintenance, and operation of the host immune system. Gut microbiota dysbiosis has local or systematic adverse effects on the host immune system, resulting in host susceptibility to various diseases, including RA. Studies on the intestinal microbiota modulation and immunomodulatory properties of probiotics have been reported, in order to identify their potential possibility in prevention and disease activity control of RA. This review summarized current studies on the role and potential mechanisms of gut microbiota in the development and progression of RA, as well as the preventative and therapeutic effects and potential mechanisms of probiotics on RA. Additionally, we proposed the challenges and difficulties in the application of probiotics in RA, providing the direction for the research and application of probiotics in the prevention of RA.
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Affiliation(s)
- Yang Yang
- State Key Laboratory of Dairy Biotechnology, Shanghai Engineering Research Center of Dairy Biotechnology, Dairy Research Institute, Bright Dairy & Food Co., Ltd., Shanghai, China
| | - Qing Hong
- State Key Laboratory of Dairy Biotechnology, Shanghai Engineering Research Center of Dairy Biotechnology, Dairy Research Institute, Bright Dairy & Food Co., Ltd., Shanghai, China
| | - Xuehong Zhang
- State Key Laboratory of Microbial Metabolism, and School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, China
| | - Zhenmin Liu
- State Key Laboratory of Dairy Biotechnology, Shanghai Engineering Research Center of Dairy Biotechnology, Dairy Research Institute, Bright Dairy & Food Co., Ltd., Shanghai, China
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Chowdhury MR, Hone KGMS, Prévost K, Balthazar P, Avino M, Arguin M, Beaudoin J, Malick M, Desgagné M, Robert G, Scott M, Dubé J, Laforest-Lapointe I, Massé E. Optimizing Fecal Occult Blood Test (FOBT) Colorectal Cancer Screening Using Gut Bacteriome as a Biomarker. Clin Colorectal Cancer 2024; 23:22-34.e2. [PMID: 37980216 DOI: 10.1016/j.clcc.2023.10.004] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2023] [Revised: 10/03/2023] [Accepted: 10/05/2023] [Indexed: 11/20/2023]
Abstract
BACKGROUND Colorectal cancer (CRC) is a major cause of cancer mortality in the world. One of the most widely used screening tests for CRC is the immunochemical fecal occult blood test (iFOBT), which detects human hemoglobin from patient's stool sample. Although it is highly efficient in detecting blood from patients with gastro-intestinal lesions, such as polyps and cancers, the iFOBT has a high rate of false positive discovery. Recent studies suggested gut bacteria as a promising noninvasive biomarker for improving the diagnosis of CRC. In this study, we examined the composition of gut bacteria using iFOBT leftover from patients undergoing screening test along with a colonoscopy. METHODS After collecting data from more than 800 patients, we considered 4 groups for this study. The first and second groups were respectively "healthy" in which the patients had either no blood in their stool or had blood but no lesions. The third and fourth groups of patients had both blood in their stools with precancerous and cancerous lesions and considered either as low-grade and high-grade lesion groups, respectively. An amplification of 16S rRNA (V4 region) gene was performed, followed by sequencing along with various statistical and bioinformatic analysis. RESULTS We analyzed the composition of the gut bacteriome at phylum, class, genus, and species levels. Although members of the Firmicute phylum increased in the 3 groups compared to healthy patients, the phylum Actinobacteriota was found to decrease. Moreover, Blautia obeum and Anaerostipes hadrus from the phylum Firmicutes were increased and Collinsella aerofaciens from phylum Actinobacteriota was found decreased when healthy group is compared to the patients with high-grade lesions. Finally, among the 5 machine learning algorithms used to perform our analysis, both elastic net (AUC > 0.7) and random forest (AUC > 0.8) performs well in differentiating healthy patients from 3 other patient groups having blood in their stool. CONCLUSION Our study integrates the iFOBT screening tool with gut bacterial composition to improve the prediction of CRC lesions.
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Affiliation(s)
- Moumita Roy Chowdhury
- Department of Biochemistry and Functional Genomics, University of Sherbrooke, Sherbrooke, Canada
| | - Karina Gisèle Mac Si Hone
- Department of Biochemistry and Functional Genomics, University of Sherbrooke, Sherbrooke, Canada; Department of Biology, University of Sherbrooke, Sherbrooke, Canada
| | - Karine Prévost
- Department of Biochemistry and Functional Genomics, University of Sherbrooke, Sherbrooke, Canada
| | - Philippe Balthazar
- Department of Biochemistry and Functional Genomics, University of Sherbrooke, Sherbrooke, Canada
| | - Mariano Avino
- Department of Biochemistry and Functional Genomics, University of Sherbrooke, Sherbrooke, Canada
| | - Mélina Arguin
- Department of Biochemistry and Functional Genomics, University of Sherbrooke, Sherbrooke, Canada
| | - Jude Beaudoin
- Department of Biochemistry and Functional Genomics, University of Sherbrooke, Sherbrooke, Canada
| | - Mandy Malick
- Department of Biochemistry and Functional Genomics, University of Sherbrooke, Sherbrooke, Canada
| | - Michael Desgagné
- Department of Biochemistry and Functional Genomics, University of Sherbrooke, Sherbrooke, Canada
| | - Gabriel Robert
- Department of Biochemistry and Functional Genomics, University of Sherbrooke, Sherbrooke, Canada
| | - Michelle Scott
- Department of Biochemistry and Functional Genomics, University of Sherbrooke, Sherbrooke, Canada
| | - Jean Dubé
- Department of Biochemistry and Functional Genomics, University of Sherbrooke, Sherbrooke, Canada
| | | | - Eric Massé
- Department of Biochemistry and Functional Genomics, University of Sherbrooke, Sherbrooke, Canada.
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Juárez-Chairez MF, Cid-Gallegos MS, Jiménez-Martínez C, Prieto-Contreras LF, Bollain-Y-Goytia de-la-Rosa JJ. The role of microbiota on rheumatoid arthritis onset. Int J Rheum Dis 2024; 27:e15122. [PMID: 38487975 DOI: 10.1111/1756-185x.15122] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2023] [Revised: 02/16/2024] [Accepted: 02/28/2024] [Indexed: 03/19/2024]
Abstract
Rheumatoid arthritis (RA) is a chronic autoimmune disease that causes inflammation and pain, which can lead to the loss of normal joint function. Although the exact cause of the disease is not yet fully understood, both environmental factors and genetics may play a role in its development. Moreover, research suggests microbiota contributes to the onset and progression of RA. People with RA show higher quantities of bacteria such as Porphyromonas gingivalis, Aggregatibacter actinomycetemcomitans, Prevotella copri, Proteus mirabilis, and Lactobacillus salivarius compared to healthy individuals. Conversely, studies propose that Lactobacillus casei, a probiotic bacterium with immunomodulatory properties, has beneficial effects for RA in murine and human models. Therefore, this work reviews the potential role of the gut microbiota in the development of RA and explores the feasibility of using probiotic bacteria as a supplementary treatment for this disease.
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Affiliation(s)
- Milagros Faridy Juárez-Chairez
- Laboratorios de Inmunología y Biología Molecular, Unidad Académica de Ciencias Biológicas de la Universidad Autónoma de Zacatecas, Zacatecas, Mexico
| | - María Stephanie Cid-Gallegos
- Unidad Profesional Interdisciplinaria de Biotecnología, Instituto Politécnico Nacional, Ciudad de Mexico, Mexico
| | - Cristian Jiménez-Martínez
- Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Unidad Profesional Adolfo López Mateos, Ciudad de Mexico, Mexico
| | - Luis Fernando Prieto-Contreras
- Laboratorio de Microbiología, Unidad Académica de Ciencias Químicas de la Universidad Autónoma de Zacatecas, Zacatecas, Mexico
| | - Juan José Bollain-Y-Goytia de-la-Rosa
- Laboratorios de Inmunología y Biología Molecular, Unidad Académica de Ciencias Biológicas de la Universidad Autónoma de Zacatecas, Zacatecas, Mexico
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Peng Y, Huang Y, Li H, Li C, Wu Y, Wang X, Wang Q, He J, Miao C. Associations between rheumatoid arthritis and intestinal flora, with special emphasis on RA pathologic mechanisms to treatment strategies. Microb Pathog 2024; 188:106563. [PMID: 38331355 DOI: 10.1016/j.micpath.2024.106563] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2023] [Revised: 01/01/2024] [Accepted: 01/29/2024] [Indexed: 02/10/2024]
Abstract
BACKGROUND Rheumatoid arthritis (RA) is an autoimmune inflammatory disease that primarily affects the joints. Individuals at risk for RA and people with RA develop intestinal dysbiosis. The changes in intestinal flora composition in preclinical and confirmed RA patients suggest that intestinal flora imbalance may play an important role in the induction and persistence of RA. METHODS Based on the current research on the interaction between RA and intestinal microbiota, intestinal microbiota metabolites and intestinal barrier changes. This paper systematically summarized the changes in intestinal microbiota in RA patients, the metabolites of intestinal flora, and the influence mechanism of intestinal barrier on RA, and further discussed the influence of drugs for RA on intestinal flora and its mechanism of action. RESULTS Compared with healthy controls, α diversity analysis of intestinal flora showed no significant difference, β diversity analysis showed significant differences. The intestinal flora produces bioactive metabolites, such as short-chain fatty acids and aromatic amino acids, which have anti-inflammatory effects. Abnormal intestinal flora leads to impaired barrier function and mucosal immune dysfunction, promoting the development of inflammation. Traditional Chinese medicine (TCM) and chemical drugs can also alleviate RA by regulating intestinal flora, intestinal flora metabolites, and intestinal barrier. Intestinal flora is closely related to the pathogenesis of RA and may become potential biomarkers for the diagnosis and treatment of RA. CONCLUSIONS Intestinal flora and its metabolites play an important role in the pathogenesis of autoimmune diseases such as RA, and are expected to become a new target for clinical diagnosis and treatment, providing a new idea for targeted treatment of RA.
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Affiliation(s)
- Yanhui Peng
- Department of Pharmacology, School of Integrated Chinese and Western Medicine, Anhui University of Chinese Medicine, Hefei, Anhui, China
| | - Yurong Huang
- Department of Pharmacology, School of Integrated Chinese and Western Medicine, Anhui University of Chinese Medicine, Hefei, Anhui, China
| | - Hui Li
- Department of Pharmacology, School of Integrated Chinese and Western Medicine, Anhui University of Chinese Medicine, Hefei, Anhui, China
| | - Chen Li
- Department of Pharmacology, School of Integrated Chinese and Western Medicine, Anhui University of Chinese Medicine, Hefei, Anhui, China
| | - Yajie Wu
- Department of Pharmacology, School of Integrated Chinese and Western Medicine, Anhui University of Chinese Medicine, Hefei, Anhui, China
| | - Xiaomei Wang
- Department of Humanistic Nursing, Anhui University of Chinese Medicine, Hefei, Anhui, China
| | - Qiang Wang
- Department of Pharmaceutical Preparation, Anhui University of Science and Technology, Fengyang, Anhui, China
| | - Juan He
- Department of Gynecology, Anhui Maternal and Child Health Hospital, Hefei, Anhui, China
| | - Chenggui Miao
- Department of Pharmacology, School of Integrated Chinese and Western Medicine, Anhui University of Chinese Medicine, Hefei, Anhui, China.
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Vijayan S, Kandi V, Palacholla PS, Rajendran R, Jarugu C, Ca J, Pravallika M, Reddy SC, Sucharitha AS. Probiotics in Allergy and Immunological Diseases: A Comprehensive Review. Cureus 2024; 16:e55817. [PMID: 38590477 PMCID: PMC10999892 DOI: 10.7759/cureus.55817] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/08/2024] [Indexed: 04/10/2024] Open
Abstract
Allergy and immunological disorders like autoimmune diseases are vastly prevalent worldwide. These conditions account for a substantial amount of personal and social burden. Such illnesses have lengthy, uncertain, and spotted courses with unpredictable exacerbations. A definite tendency for improving the overall quality of life of individuals suffering from such diseases is crucial to tackling these diseases, especially through diet or lifestyle modification. Further, interventions like microbiome-based therapeutics such as prebiotics or probiotics were explored. Changes in the microbial population were evident during the flare-up of autoimmune and allergic conditions. The realization that the human microbiome is a central player in immunological diseases is a hallmark of its potential usefulness in therapy for such illnesses. This review focuses on the intricate symphony in the orchestra of the human microbiome and the immune system. New therapeutic strategies involving probiotics appear to be the future of personalized medicine. Through this review, we explore the narrative of probiotics and reaffirm their use as therapeutic and preventive agents in immunological disorders.
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Affiliation(s)
- Swapna Vijayan
- Pediatrics, Sir Chandrasekhara Venkata (CV) Raman General Hospital, Bangalore, IND
| | - Venkataramana Kandi
- Clinical Microbiology, Prathima Institute of Medical Sciences, Karimnagar, IND
| | - Pratyusha S Palacholla
- Internal Medicine, Vydehi Institute of Medical Sciences and Research Centre, Bangalore, IND
| | | | - Chandrasagar Jarugu
- General Practice, Vydehi Institute of Medical Sciences and Research Centre, Bangalore, IND
| | - Jayashankar Ca
- Internal Medicine, Vydehi Institute of Medical Sciences and Research Centre, Bangalore, IND
| | - Mundla Pravallika
- Internal Medicine, Vydehi Institute of Medical Sciences and Research Centre, Bangalore, IND
| | - Shruthi C Reddy
- Internal Medicine, Vydehi Institute of Medical Sciences and Research Centre, Bangalore, IND
| | - Atul S Sucharitha
- Internal Medicine, Vydehi Institute of Medical Sciences and Research Centre, Bangalore, IND
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Zhang X, Li PH, Wang D, Li H, Kong X, Zhang G, Zhao Y, Liu J, Wu W, Zhang Y, Li ZH, Luo H. Causal effect of gut microbiota of Defluviitaleaceae on the clinical pathway of "Influenza-Subacute Thyroiditis-Hypothyroidism". Front Microbiol 2024; 15:1354989. [PMID: 38476943 PMCID: PMC10929266 DOI: 10.3389/fmicb.2024.1354989] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2023] [Accepted: 01/29/2024] [Indexed: 03/14/2024] Open
Abstract
Introduction Hypothyroidism has been found to be influenced by gut microbiota. However, it remains unclear which a taxon of gut microbiota plays a key role in this function. Identifying the key bacteria affects hypothyroidism and through what mechanism will be helpful for the prevention of hypothyroidism through specific clinical pathways. Materials and methods In Study A, 35 families and 130 genera of gut microbiota are used as exposures, with hypothyroidism as the outcome. The causal effect of the gut microbiota on hypothyroidism is estimated through two-sample Mendelian randomization. Combining the results of the two taxonomical levels, key taxa are selected, which in Study B are investigated for their causal association with multiple generally admitted causes of hypothyroidism and their more upstream factors. For validating and revealing the potential mechanism, enrichment analyses of the related genes and interacting transcription factors were performed. Results In Study A, Defluviitaleaceae (OR: 0.043, 95% CI: 0.005-0.363, P = 0.018)/Defluviitaleaceae_UCG_011 (OR: 0.385, 95% CI: 0.172-0.865, P = 0.021) are significantly causally associated with hypothyroidism at both taxonomical levels. In Study B, Defluviitaleaceae family and Defluviitaleaceae_UCG_011 genus show the causal association with decreased thyroiditis (Family: OR: 0.174, 95% CI: 0.046-0.653, P = 0.029; Genus: OR: 0.139, 95% CI: 0.029-0.664, P = 0.043), decreased subacute thyroiditis (Family: OR: 0.028, 95% CI: 0.004-0.213, P = 0.007; Genus: OR: 0.018, 95% CI: 0.002-0.194, P = 0.013), decreased influenza (Family: OR: 0.818, 95% CI: 0.676-0.989, P = 0.038; Genus: OR: 0.792, 95% CI: 0.644-0.974, P = 0.027), and increased anti-influenza H3N2 IgG levels (Family: OR: 1.934, 95% CI: 1.123-3.332, P = 0.017; Genus: OR: 1.675, 95% CI: 0.953-2.943, P = 0.073). The results of the enrichment analysis are consistent with the findings and the suggested possible mechanisms. Conclusion Defluviitaleaceae of the gut microbiota displays the probability of causally inhibiting the clinical pathway of "Influenza-Subacute Thyroiditis-Hypothyroidism" and acts as the potential probiotics to prevent influenza, subacute thyroiditis, and hypothyroidism.
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Affiliation(s)
- Xin Zhang
- Department of Radiation Oncology, Cancer Center, West China Hospital, Sichuan University, Chengdu, China
- Department of Biotherapy, Cancer Center, West China Hospital, Sichuan University, Chengdu, China
| | - Pei-Heng Li
- Division of Thyroid Surgery, Department of General Surgery, West China Hospital, Sichuan University, Chengdu, Sichuan, China
| | - Dongyue Wang
- Department of Ophthalmology, West China Hospital, Sichuan University, Chengdu, China
| | - Hancong Li
- Division of Thyroid Surgery, Department of General Surgery, West China Hospital, Sichuan University, Chengdu, Sichuan, China
| | - Xiangyu Kong
- Division of Thyroid Surgery, Department of General Surgery, West China Hospital, Sichuan University, Chengdu, Sichuan, China
| | - Gongshuang Zhang
- Division of Thyroid Surgery, Department of General Surgery, West China Hospital, Sichuan University, Chengdu, Sichuan, China
| | - Yue Zhao
- Division of Thyroid Surgery, Department of General Surgery, West China Hospital, Sichuan University, Chengdu, Sichuan, China
| | - Jiaye Liu
- Division of Thyroid Surgery, Department of General Surgery, West China Hospital, Sichuan University, Chengdu, Sichuan, China
| | - Wenshuang Wu
- Division of Thyroid Surgery, Department of General Surgery, West China Hospital, Sichuan University, Chengdu, Sichuan, China
| | - Yuwei Zhang
- Department of Endocrinology and Metabolism, West China Hospital of Sichuan University, Chengdu, China
- Center for Diabetes and Metabolism Research, West China Hospital of Sichuan University, Chengdu, China
| | - Zhi-Hui Li
- Division of Thyroid Surgery, Department of General Surgery, West China Hospital, Sichuan University, Chengdu, Sichuan, China
| | - Han Luo
- Division of Thyroid Surgery, Department of General Surgery, West China Hospital, Sichuan University, Chengdu, Sichuan, China
- Department of Laboratory Medicine/Research Centre of Clinical Laboratory Medicine, West China Hospital, Sichuan University, Chengdu, Sichuan, China
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Mellai M, Allesina M, Edoardo B, Cascella F, Nobile V, Spina A, Amone F, Zaccaria V, Insolia V, Perri A, Lofaro D, Puoci F. A Randomized, Double-Blind, Placebo-Controlled Trial: Efficacy of Opuntia ficus- indica Prebiotic Supplementation in Subjects with Gut Dysbiosis. Nutrients 2024; 16:586. [PMID: 38474715 DOI: 10.3390/nu16050586] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2024] [Revised: 02/06/2024] [Accepted: 02/17/2024] [Indexed: 03/14/2024] Open
Abstract
Gut dysbiosis refers to an imbalance in gut microbiota composition and function. Opuntia ficus-indica extract has been shown to modulate gut microbiota by improving SCFA production in vivo and gastrointestinal discomfort (GD) in humans. The aim of this study was to demonstrate the efficacy of OdiliaTM on gastrointestinal health by changing the microbial diversity of species involved in inflammation, immunity, oxidation, and the brain-gut-muscle axis. A randomized, double-blind clinical trial was conducted in 80 adults with gut dysbiosis. The intervention consisted of a 300 mg daily intake of OdiliaTM (n = 40) or maltodextrin as a placebo (n = 40), administered for 8 weeks. Intervention effect was evaluated using 16S metagenomics and GIQLI/GSAS scores at baseline, at 4 and 8 weeks. Eight weeks of OdiliaTM supplementation positively modulates gut microbiota composition with a significant reduction in the Firmicutes to Bacteroidetes ratio (p = 0.0012). Relative abundances of beneficial bacteria (Bacteroides and Clostridium_XIVa) were significantly increased (p < 0.001), in contrast to a significant reduction in pro-inflammatory bacteria (p < 0.001). Accordingly, GIQLI and GSAS scores revealed successful improvement in GD. OdiliaTM may represent an effective and well-tolerated treatment in subjects with gut dysbiosis.
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Affiliation(s)
- Marta Mellai
- Department of Health Sciences, University of Piemonte Orientale, 28100 Novara, Italy
- Genomics & Transcriptomics Unit, Center for Translational Research on Autoimmune and Allergic Disease, 28100 Novara, Italy
| | - Marta Allesina
- Department of Health Sciences, University of Piemonte Orientale, 28100 Novara, Italy
| | - Benedetto Edoardo
- GIGA-CP Italian Association for Primary Care Gastroenterology, 87036 Rende, Italy
| | - Federica Cascella
- Department of Health Sciences, University of Piemonte Orientale, 28100 Novara, Italy
| | - Vincenzo Nobile
- R&D Department, Complife Italia S.r.l., 27028 San Martino Siccomario, Italy
| | - Amelia Spina
- Nutratech S.r.l., Spin-Off of University of Calabria, 87036 Rende, Italy
| | - Fabio Amone
- Nutratech S.r.l., Spin-Off of University of Calabria, 87036 Rende, Italy
| | | | | | - Anna Perri
- Department of Experimental and Clinical Medicine, Magna Grecia University of Catanzaro, 88100 Catanzaro, Italy
| | - Danilo Lofaro
- Department of Mechanical, Energy, Management Engineering, University of Calabria, 87036 Rende, Italy
| | - Francesco Puoci
- Department of Pharmacy, Health and Nutritional Sciences, University of Calabria, 87100 Cosenza, Italy
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Purohit A, Kandiyal B, Kumar S, Pragasam AK, Kamboj P, Talukdar D, Verma J, Sharma V, Sarkar S, Mahajan D, Yadav R, Ahmed R, Nanda R, Dikshit M, Banerjee SK, Shalimar, Das B. Collinsella aerofaciens linked with increased ethanol production and liver inflammation contribute to the pathophysiology of NAFLD. iScience 2024; 27:108764. [PMID: 38313048 PMCID: PMC10837629 DOI: 10.1016/j.isci.2023.108764] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2023] [Revised: 10/21/2023] [Accepted: 12/15/2023] [Indexed: 02/06/2024] Open
Abstract
Non-alcoholic fatty liver disease (NAFLD) is an emerging global health problem and a potential risk factor for metabolic diseases. The bidirectional interactions between liver and gut made dysbiotic gut microbiome one of the key risk factors for NAFLD. In this study, we reported an increased abundance of Collinsella aerofaciens in the gut of obese and NASH patients living in India. We isolated C. aerofaciens from the fecal samples of biopsy-proven NASH patients and observed that their genome is enriched with carbohydrate metabolism, fatty acid biosynthesis, and pro-inflammatory functions and have the potency to increase ethanol level in blood. An animal study indicated that mice supplemented with C. aerofaciens had increased levels of circulatory ethanol, high levels of hepatic hydroxyproline, triglyceride, and inflammation in the liver. The present findings indicate that perturbation in the gut microbiome composition is a key risk factor for NAFLD.
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Affiliation(s)
- Ayushi Purohit
- Translational Health Science and Technology Institute, NCR Biotech Science Cluster, Faridabad 121004, India
| | - Bharti Kandiyal
- Translational Health Science and Technology Institute, NCR Biotech Science Cluster, Faridabad 121004, India
| | - Shakti Kumar
- Translational Health Science and Technology Institute, NCR Biotech Science Cluster, Faridabad 121004, India
| | - Agila Kumari Pragasam
- Translational Health Science and Technology Institute, NCR Biotech Science Cluster, Faridabad 121004, India
| | - Parul Kamboj
- Translational Health Science and Technology Institute, NCR Biotech Science Cluster, Faridabad 121004, India
| | - Daizee Talukdar
- Translational Health Science and Technology Institute, NCR Biotech Science Cluster, Faridabad 121004, India
| | - Jyoti Verma
- Translational Health Science and Technology Institute, NCR Biotech Science Cluster, Faridabad 121004, India
| | - Vipin Sharma
- Translational Health Science and Technology Institute, NCR Biotech Science Cluster, Faridabad 121004, India
| | - Soumalya Sarkar
- Translational Health Science and Technology Institute, NCR Biotech Science Cluster, Faridabad 121004, India
| | - Dinesh Mahajan
- Translational Health Science and Technology Institute, NCR Biotech Science Cluster, Faridabad 121004, India
| | - Rajni Yadav
- Department of Pathology, All India Institute of Medical Sciences, New Delhi 110029, India
| | - Riya Ahmed
- Translational Health Group, International Centre for Genetic Engineering and Biotechnology, New Delhi 110067, India
| | - Ranjan Nanda
- Translational Health Group, International Centre for Genetic Engineering and Biotechnology, New Delhi 110067, India
| | - Madhu Dikshit
- Translational Health Science and Technology Institute, NCR Biotech Science Cluster, Faridabad 121004, India
| | - Sanjay K. Banerjee
- Department of Biotechnology, National Institute of Pharmaceutical Education and Research (NIPER-Guwahati), Changsari, Guwahati, Assam 781101, India
| | - Shalimar
- Department of Gastroenterology and Human Nutrition, All India Institute of Medical Sciences, New Delhi 110029, India
| | - Bhabatosh Das
- Translational Health Science and Technology Institute, NCR Biotech Science Cluster, Faridabad 121004, India
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Sun Y, Chen X, Zhang Y, Chen X, Zhang C, Zhao J, Sun S, Zhang Y, Qiu X. Synergistic impact of Gui Zhi Shao Yao Zhi Mu Decoction and leflunomide on gut microbiota in rheumatoid arthritis: insights from 16S rDNA sequencing. Am J Transl Res 2024; 16:654-668. [PMID: 38463585 PMCID: PMC10918140] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2023] [Accepted: 12/27/2023] [Indexed: 03/12/2024]
Abstract
BACKGROUND Rheumatoid arthritis (RA) is a chronic autoimmune disease with complex pathogenesis, including alterations in the gut microbiota. Gui Zhi Shao Yao Zhi Mu Decoction (GSZD), a traditional Chinese herbal formula, has shown efficacy in RA treatment, but its impact on intestinal microflora remains unclear. This study aimed to investigate the effects of GSZD combined with leflunomide on the gut microbiota of RA patients. METHODS The study enrolled 48 RA patients who were randomly assigned to either a control group receiving leflunomide or a treatment group receiving GSZD combined with leflunomide for 12 weeks. Gut microbiota composition was analyzed pre- and post-intervention using 16S rDNA sequencing. Changes in microbial diversity, abundance, and metabolic functions were assessed. RESULTS Post-treatment, both groups exhibited significant alterations in gut microbiota composition. GSZD combined with leflunomide led to an increased Bacteroidetes/Firmicutes ratio and a reduction in Actinobacteria compared to leflunomide alone. This was associated with beneficial shifts in microbial genera and metabolic pathways, suggesting improved gut health and systemic immune modulation. CONCLUSION GSZD combined with leflunomide significantly modulates the gut microbiota in RA patients. This study provides insights into the mechanisms underlying the therapeutic effects of GSZD and highlights the potential of integrating traditional Chinese medicine with conventional treatments in managing RA.
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Affiliation(s)
- Ying Sun
- Rheumatology Department, Shunyi Hospital, Beijing Traditional Chinese Medicine HospitalShunyi, Beijing 101300, China
| | - Xiaoheng Chen
- Thyroid Diseases Department, Dongzhimen Hopital Beijing University of Chinese MedicineDongcheng, Beijing 100700, China
| | - Ye Zhang
- School of Medicine and Health, Jiuzhou PolytechnicXuzhou 221113, Jiangsu, China
| | - Xiaojun Chen
- Rheumatology Department, Shunyi Hospital, Beijing Traditional Chinese Medicine HospitalShunyi, Beijing 101300, China
| | - Chen Zhang
- Rheumatology Department, Shunyi Hospital, Beijing Traditional Chinese Medicine HospitalShunyi, Beijing 101300, China
| | - Jing Zhao
- Rheumatology Department, Shunyi Hospital, Beijing Traditional Chinese Medicine HospitalShunyi, Beijing 101300, China
| | - Songge Sun
- Rheumatology Department, Shunyi Hospital, Beijing Traditional Chinese Medicine HospitalShunyi, Beijing 101300, China
| | - Yanzhen Zhang
- Rheumatology Department, Shunyi Hospital, Beijing Traditional Chinese Medicine HospitalShunyi, Beijing 101300, China
| | - Xinping Qiu
- Rheumatology Department, Shunyi Hospital, Beijing Traditional Chinese Medicine HospitalShunyi, Beijing 101300, China
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Iwase SC, Osawe S, Happel AU, Gray CM, Holmes SP, Blackburn JM, Abimiku A, Jaspan HB. Longitudinal gut microbiota composition of South African and Nigerian infants in relation to tetanus vaccine responses. Microbiol Spectr 2024; 12:e0319023. [PMID: 38230936 PMCID: PMC10846250 DOI: 10.1128/spectrum.03190-23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2023] [Accepted: 12/20/2023] [Indexed: 01/18/2024] Open
Abstract
Infants who are exposed to HIV but uninfected (iHEU) have higher risk of infectious morbidity than infants who are HIV-unexposed and uninfected (iHUU), possibly due to altered immunity. As infant gut microbiota may influence immune development, we evaluated the effects of HIV exposure on infant gut microbiota and its association with tetanus toxoid vaccine responses. We evaluated the gut microbiota of 82 South African (61 iHEU and 21 iHUU) and 196 Nigerian (141 iHEU and 55 iHUU) infants at <1 and 15 weeks of life by 16S rRNA gene sequencing. Anti-tetanus antibodies were measured by enzyme-linked immunosorbent assay at matched time points. Gut microbiota in the 278 included infants and its succession were more strongly influenced by geographical location and age than by HIV exposure. Microbiota of Nigerian infants, who were exclusively breastfed, drastically changed over 15 weeks, becoming dominated by Bifidobacterium longum subspecies infantis. This change was not observed among South African infants, even when limiting the analysis to exclusively breastfed infants. The Least Absolute Shrinkage and Selection Operator regression suggested that HIV exposure and gut microbiota were independently associated with tetanus titers at week 15, and that high passively transferred antibody levels, as seen in the Nigerian cohort, may mitigate these effects. In conclusion, in two African cohorts, HIV exposure minimally altered the infant gut microbiota compared to age and setting, but both specific gut microbes and HIV exposure independently predicted humoral tetanus vaccine responses.IMPORTANCEGut microbiota plays an essential role in immune system development. Since infants HIV-exposed and uninfected (iHEU) are more vulnerable to infectious diseases than unexposed infants, we explored the impact of HIV exposure on gut microbiota and its association with vaccine responses. This study was conducted in two African countries with rapidly increasing numbers of iHEU. Infant HIV exposure did not substantially affect gut microbial succession, but geographic location had a strong effect. However, both the relative abundance of specific gut microbes and HIV exposure were independently associated with tetanus titers, which were also influenced by baseline tetanus titers (maternal transfer). Our findings provide insight into the effect of HIV exposure, passive maternal antibody, and gut microbiota on infant humoral vaccine responses.
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Affiliation(s)
- Saori C. Iwase
- Division of Immunology, Department of Pathology, University of Cape Town, Cape Town, South Africa
- Institute of Infectious Disease and Molecular Medicine, University of Cape Town, Cape Town, South Africa
| | - Sophia Osawe
- Institute of Human Virology-Nigeria, Abuja, Nigeria
| | - Anna-Ursula Happel
- Division of Immunology, Department of Pathology, University of Cape Town, Cape Town, South Africa
- Institute of Infectious Disease and Molecular Medicine, University of Cape Town, Cape Town, South Africa
| | - Clive M. Gray
- Division of Molecular Biology and Human Genetics, Biomedical Research Institute, Stellenbosch University, Cape Town, South Africa
| | - Susan P. Holmes
- Department of Statistics, Stanford University, Stanford, California, USA
| | - Jonathan M. Blackburn
- Institute of Infectious Disease and Molecular Medicine, University of Cape Town, Cape Town, South Africa
- Division of Chemical and Systems Biology, University of Cape Town, Cape Town, South Africa
| | - Alash'le Abimiku
- Institute of Human Virology-Nigeria, Abuja, Nigeria
- Institute of Human Virology, University of Maryland, School of Medicine, Baltimore, Maryland, USA
| | - Heather B. Jaspan
- Division of Immunology, Department of Pathology, University of Cape Town, Cape Town, South Africa
- Institute of Infectious Disease and Molecular Medicine, University of Cape Town, Cape Town, South Africa
- Seattle Children’s Research Institute, Center for Global Infectious Disease Research, Seattle, Washington, USA
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Gilbert BTP, Tadeo RYT, Lamacchia C, Studer O, Courvoisier D, Raes J, Finckh A. Gut microbiome and intestinal inflammation in preclinical stages of rheumatoid arthritis. RMD Open 2024; 10:e003589. [PMID: 38296308 PMCID: PMC10836359 DOI: 10.1136/rmdopen-2023-003589] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2023] [Accepted: 01/15/2024] [Indexed: 02/05/2024] Open
Abstract
BACKGROUND Faecal Prevotellaceae, and other microbes, have been associated with rheumatoid arthritis (RA) and preclinical RA. We have performed a quantitative microbiome profiling study in preclinical stages of RA. METHODS First-degree relatives of patients with RA (RA-FDRs) from the SCREEN-RA cohort were categorised into four groups: controls, healthy asymptomatic RA-FDRs; high genetic risk, asymptomatic RA-FDRs with two copies of the shared epitope; autoimmunity, asymptomatic RA-FDRs with RA-associated autoimmunity; and symptomatic, clinically suspect arthralgias or untreated new-onset RA.Faecal samples were collected and frozen. 16S sequencing was performed, processed with DADA2 pipeline and Silva database. Cell counts (cytometry) and faecal calprotectin (enzyme-linked immunosorbent assay, ELISA) were also obtained. Microbial community analyses were conducted using non-parametric tests, such as permutational multivariate analysis of variance (PERMANOVA), Wilcoxon and Kruskal-Wallis, or Aldex2. RESULTS A total of 371 individuals were included and categorised according to their preclinical stage of the disease. Groups had similar age, gender and body mass index. We found no significant differences in the quantitative microbiome profiles by preclinical stages (PERMANOVA, R2=0.00798, p=0.56) and, in particular, no group differences in Prevotellaceae abundance. Results were similar when using relative microbiome profiling data (PERMANOVA, R2=0.0073, p=0.83) or Aldex2 on 16S sequence counts. Regarding faecal calprotectin, we found no differences between groups (p=0.3). CONCLUSIONS We could not identify microbiome profiles associated with preclinical stages of RA. Only in a subgroup of individuals with the most pronounced phenotypes did we modestly retrieve the previously reported associations.
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Affiliation(s)
- Benoît Thomas P Gilbert
- Division of Rheumatology, HUG, Geneva, Switzerland
- Geneva Centre for Inflammation Research, UNIGE, Geneva, Switzerland
| | - Raul Yhossef Tito Tadeo
- KU Leuven, Department of Microbiology, Immunology, and Transplantation, Rega Institute for Medical Research, B-3000 Leuven, Belgium
- VIB, Center for Microbiology, B-3000 Leuven, Belgium
| | - Celine Lamacchia
- Division of Rheumatology, HUG, Geneva, Switzerland
- Geneva Centre for Inflammation Research, UNIGE, Geneva, Switzerland
| | - Olivia Studer
- Division of Rheumatology, HUG, Geneva, Switzerland
- Geneva Centre for Inflammation Research, UNIGE, Geneva, Switzerland
| | - Delphine Courvoisier
- Division of Rheumatology, HUG, Geneva, Switzerland
- Geneva Centre for Inflammation Research, UNIGE, Geneva, Switzerland
| | - Jeroen Raes
- KU Leuven, Department of Microbiology, Immunology, and Transplantation, Rega Institute for Medical Research, B-3000 Leuven, Belgium
- VIB, Center for Microbiology, B-3000 Leuven, Belgium
| | - Axel Finckh
- Division of Rheumatology, HUG, Geneva, Switzerland
- Geneva Centre for Inflammation Research, UNIGE, Geneva, Switzerland
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Cui L, Zou S, Liu J, Lv H, Li H, Zhang Z. Potential effects of sodium hyaluronate on constipation-predominant irritable bowel syndrome. Int Immunopharmacol 2024; 127:111404. [PMID: 38128311 DOI: 10.1016/j.intimp.2023.111404] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2023] [Revised: 11/25/2023] [Accepted: 12/14/2023] [Indexed: 12/23/2023]
Abstract
Treatment strategies for constipation-predominant irritable bowel syndrome (IBS-C) continue to improve. However, effective drugs are still lacking. Herein, we explored whether sodium hyaluronate (SH) could be used to treat IBS-C. The effects of SH with different molecular weights were compared in a rat model of IBS-C. Low-molecular-weight SH (LMW-SH, 5 ∼ 10 kDa), medium-molecular-weight SH (MMW-SH, 200 ∼ 400 kDa), and high-molecular-weight SH (HMW-SH, 1300 ∼ 1500 kDa) were screened for efficacy in IBS-C using the following indicators: body weight, number of fecal pellets, fecal moisture, visceral hypersensitivity, and gastrointestinal transit rate. H-HMW-SH was the most effective in improving IBS-C symptoms. The ELISA kits indicated that H-HMW-SH reduced the levels of pro-inflammatory cytokines IL-1β, IL-18, and TNF-α in IBS-C rats. In addition, both western blot and immunofluorescence analyses showed that H-HMW-SH increased the protein expressions of claudin-1, occludin and zonula occludens-1. Furthermore, H-HMW-SH restored the balance of intestinal flora in different intestinal contents (duodenum, jejunum, ileum, and colon) and feces of rats with IBS-C. Overall, our study illustrates the therapeutic potential of H-HMW-SH in the treatment of IBS-C.
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Affiliation(s)
- Li Cui
- Jiangsu Province Academy of Traditional Chinese Medicine, 210028 Nanjing, China
| | - Shuting Zou
- Jiangsu Province Academy of Traditional Chinese Medicine, 210028 Nanjing, China
| | - Jing Liu
- Jiangsu Province Academy of Traditional Chinese Medicine, 210028 Nanjing, China
| | - Huixia Lv
- School of Pharmacy, China Pharmaceutical University, 211198 Nanjing, China.
| | - Hui Li
- Jiangsu Province Academy of Traditional Chinese Medicine, 210028 Nanjing, China.
| | - Zhenhai Zhang
- Jiangsu Province Academy of Traditional Chinese Medicine, 210028 Nanjing, China.
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Xu M, Chen H, Tan T, Xie K, Xie H, Li Q. Exploring the causal association between rheumatoid arthritis and the risk of cervical cancer: a two-sample Mendelian randomization study. Arthritis Res Ther 2024; 26:35. [PMID: 38263277 PMCID: PMC10804645 DOI: 10.1186/s13075-023-03240-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2023] [Accepted: 12/13/2023] [Indexed: 01/25/2024] Open
Abstract
OBJECTIVE Whether rheumatoid arthritis patients have an increased risk of cervical cancer remains controversial, and further research is needed on this clinical question. This study aims to investigate the association between rheumatoid arthritis and the susceptibility to cervical cancer by employing Mendelian randomization methodology, utilizing the extensive dataset from human genome-wide association data analysis. METHODS The publicly accessible MR base database was utilized to obtain the complete genome, relevant research findings, and summarized data pertaining to rheumatoid arthritis and cervical cancer. Genetic tool variables, specifically single-nucleotide polymorphisms closely linked to rheumatoid arthritis, were chosen for analysis. Four methods, namely inverse variance weighted analysis, weighted median analysis, weighted mode, and MR-Egger regression, were employed. Statistical analysis was conducted to explore the potential association between rheumatoid arthritis and susceptibility to cervical cancer. RESULTS The results of the inverse variance weighted analysis (OR = 1.096, 95% CI: 1.018-1.180, P = 0.015) indicate a significant causal relationship between rheumatoid arthritis and an increased risk of cervical cancer. Furthermore, the absence of horizontal pleiotropic effects (MR-Egger intercept = 0.00025, P = 0.574) and heterogeneity (QEgger = 2.239, I2Egger = 0.225, PEgger = 0.268, QIVW = 2.734, I2IVW = 0.220, PIVW = 0.999) suggests that the observed association is not influenced by confounding factors. Sensitivity analysis and other statistical methods also support the conclusion that genetic pleiotropy does not introduce bias to the findings. CONCLUSION There is a causal relationship between rheumatoid arthritis and the occurrence of cervical cancer. People with rheumatoid arthritis is one of the high-risk groups for early screening of cervical cancer. The IL-18 may play a significant role in elevating the risk of cervical cancer among rheumatoid arthritis patients.
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Affiliation(s)
- Minxian Xu
- Department of Oncology, Affiliated Hospital (Clinical College) of Xiangnan University, Chenzhou, 423000, People's Republic of China
- Department of Radiation Oncology, Affiliated Hospital (Clinical College) of Xiangnan University, Chenzhou, 423000, Hunan Province, People's Republic of China
| | - Huan Chen
- Department of Gynecology, Affiliated Hospital (Clinical College) of Xiangnan University, Chenzhou, 423000, People's Republic of China
| | - Tao Tan
- Faulty of Applied Sciences, Macao Polytechnic University, Macao, 999078, People's Republic of China
| | - Kaihong Xie
- Department of Oncology, Affiliated Hospital (Clinical College) of Xiangnan University, Chenzhou, 423000, People's Republic of China
| | - Hui Xie
- Department of Oncology, Affiliated Hospital (Clinical College) of Xiangnan University, Chenzhou, 423000, People's Republic of China.
- Department of Radiation Oncology, Affiliated Hospital (Clinical College) of Xiangnan University, Chenzhou, 423000, Hunan Province, People's Republic of China.
| | - Qing Li
- Department of Oncology, Affiliated Hospital (Clinical College) of Xiangnan University, Chenzhou, 423000, People's Republic of China.
- Department of Radiation Oncology, Affiliated Hospital (Clinical College) of Xiangnan University, Chenzhou, 423000, Hunan Province, People's Republic of China.
- School of Medical Imaging, Laboratory Science and Rehabilitation, Xiangnan University, 423000, Chenzhou, Hunan Province, People's Republic of China.
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40
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Garcia-Fernandez H, Arenas-de Larriva AP, Lopez-Moreno J, Gutierrez-Mariscal FM, Romero-Cabrera JL, Molina-Abril H, Torres-Peña JD, Rodriguez-Cano D, Malagon MM, Ordovas JM, Delgado-Lista J, Perez-Martinez P, Lopez-Miranda J, Camargo A. Sex-specific differences in intestinal microbiota associated with cardiovascular diseases. Biol Sex Differ 2024; 15:7. [PMID: 38243297 PMCID: PMC10797902 DOI: 10.1186/s13293-024-00582-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/03/2023] [Accepted: 01/03/2024] [Indexed: 01/21/2024] Open
Abstract
BACKGROUND Cardiovascular diseases (CVD), including coronary heart disease (CHD), display a higher prevalence in men than women. This study aims to evaluate the variations in the intestinal microbiota between men and women afflicted with CHD and delineate these against a non-CVD control group for each sex. METHODS Our research was conducted in the framework of the CORDIOPREV study, a clinical trial which involved 837 men and 165 women with CHD. We contrasted our findings with a reference group of 375 individuals (270 men, 105 women) without CVD. The intestinal microbiota was examined through 16S metagenomics on the Illumina MiSeq platform and the data processed with Quiime2 software. RESULTS Our results showed a sex-specific variation (beta diversity) in the intestinal microbiota, while alpha-biodiversity remained consistent across both sexes. Linear discriminant analysis effect size (LEfSe) analysis revealed sex-centric alterations in the intestinal microbiota linked to CVD. Moreover, using random forest (RF) methodology, we identified seven bacterial taxa-g_UBA1819 (Ruminococcaceae), g_Bilophila, g_Subdoligranulum, g_Phascolarctobacterium, f_Barnesiellaceae, g_Ruminococcus, and an unknown genus from the Ruminococcaceae family (Ruminococcaceae incertae sedis)-as key discriminators between men and women diagnosed with CHD. The same taxa also emerged as critical discriminators between CHD-afflicted and non-CVD individuals, when analyzed separately by sex. CONCLUSION Our findings suggest a sex-specific dysbiosis in the intestinal microbiota linked to CHD, potentially contributing to the sex disparity observed in CVD incidence. Trial registration Clinical Trials.gov.Identifier NCT00924937.
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Affiliation(s)
- Helena Garcia-Fernandez
- Lipids and Atherosclerosis Unit, Department of Internal Medicine, Hospital Universitario Reina Sofía, Cordoba, Spain
- Department of Medical and Surgical Sciences, Universidad de Cordoba, Cordoba, Spain
- Maimonides Institute for Biomedical Research in Cordoba (IMIBIC), Cordoba, Spain
| | - Antonio P Arenas-de Larriva
- Lipids and Atherosclerosis Unit, Department of Internal Medicine, Hospital Universitario Reina Sofía, Cordoba, Spain
- Department of Medical and Surgical Sciences, Universidad de Cordoba, Cordoba, Spain
- Maimonides Institute for Biomedical Research in Cordoba (IMIBIC), Cordoba, Spain
| | - Javier Lopez-Moreno
- Lipids and Atherosclerosis Unit, Department of Internal Medicine, Hospital Universitario Reina Sofía, Cordoba, Spain
- Department of Medical and Surgical Sciences, Universidad de Cordoba, Cordoba, Spain
- Maimonides Institute for Biomedical Research in Cordoba (IMIBIC), Cordoba, Spain
| | - Francisco M Gutierrez-Mariscal
- Lipids and Atherosclerosis Unit, Department of Internal Medicine, Hospital Universitario Reina Sofía, Cordoba, Spain
- Department of Medical and Surgical Sciences, Universidad de Cordoba, Cordoba, Spain
- Maimonides Institute for Biomedical Research in Cordoba (IMIBIC), Cordoba, Spain
- CIBER Fisiopatologia Obesidad y Nutricion (CIBEROBN), Instituto de Salud Carlos III, Madrid, Spain
| | - Juan L Romero-Cabrera
- Lipids and Atherosclerosis Unit, Department of Internal Medicine, Hospital Universitario Reina Sofía, Cordoba, Spain
- Department of Medical and Surgical Sciences, Universidad de Cordoba, Cordoba, Spain
- Maimonides Institute for Biomedical Research in Cordoba (IMIBIC), Cordoba, Spain
| | | | - Jose D Torres-Peña
- Lipids and Atherosclerosis Unit, Department of Internal Medicine, Hospital Universitario Reina Sofía, Cordoba, Spain
- Department of Medical and Surgical Sciences, Universidad de Cordoba, Cordoba, Spain
- Maimonides Institute for Biomedical Research in Cordoba (IMIBIC), Cordoba, Spain
- CIBER Fisiopatologia Obesidad y Nutricion (CIBEROBN), Instituto de Salud Carlos III, Madrid, Spain
| | | | - Maria M Malagon
- Maimonides Institute for Biomedical Research in Cordoba (IMIBIC), Cordoba, Spain
- CIBER Fisiopatologia Obesidad y Nutricion (CIBEROBN), Instituto de Salud Carlos III, Madrid, Spain
- Department of Cell Biology, Physiology, and Immunology, University of Cordoba, Cordoba, Spain
| | - Jose M Ordovas
- CIBER Fisiopatologia Obesidad y Nutricion (CIBEROBN), Instituto de Salud Carlos III, Madrid, Spain
- Nutrition and Genomics Laboratory, Jean Mayer USDA Human Nutrition Research Center on Aging, Tufts University, Boston, MA, USA
- IMDEA Food Institute, Madrid, Spain
| | - Javier Delgado-Lista
- Lipids and Atherosclerosis Unit, Department of Internal Medicine, Hospital Universitario Reina Sofía, Cordoba, Spain
- Department of Medical and Surgical Sciences, Universidad de Cordoba, Cordoba, Spain
- Maimonides Institute for Biomedical Research in Cordoba (IMIBIC), Cordoba, Spain
- CIBER Fisiopatologia Obesidad y Nutricion (CIBEROBN), Instituto de Salud Carlos III, Madrid, Spain
| | - Pablo Perez-Martinez
- Lipids and Atherosclerosis Unit, Department of Internal Medicine, Hospital Universitario Reina Sofía, Cordoba, Spain
- Department of Medical and Surgical Sciences, Universidad de Cordoba, Cordoba, Spain
- Maimonides Institute for Biomedical Research in Cordoba (IMIBIC), Cordoba, Spain
- CIBER Fisiopatologia Obesidad y Nutricion (CIBEROBN), Instituto de Salud Carlos III, Madrid, Spain
| | - Jose Lopez-Miranda
- Lipids and Atherosclerosis Unit, Department of Internal Medicine, Hospital Universitario Reina Sofía, Cordoba, Spain.
- Department of Medical and Surgical Sciences, Universidad de Cordoba, Cordoba, Spain.
- Maimonides Institute for Biomedical Research in Cordoba (IMIBIC), Cordoba, Spain.
- CIBER Fisiopatologia Obesidad y Nutricion (CIBEROBN), Instituto de Salud Carlos III, Madrid, Spain.
| | - Antonio Camargo
- Lipids and Atherosclerosis Unit, Department of Internal Medicine, Hospital Universitario Reina Sofía, Cordoba, Spain.
- Department of Medical and Surgical Sciences, Universidad de Cordoba, Cordoba, Spain.
- Maimonides Institute for Biomedical Research in Cordoba (IMIBIC), Cordoba, Spain.
- CIBER Fisiopatologia Obesidad y Nutricion (CIBEROBN), Instituto de Salud Carlos III, Madrid, Spain.
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Estaleen RA, Reilly CM, Luo XM. A double-edged sword: interactions of CX 3CL1/CX 3CR1 and gut microbiota in systemic lupus erythematosus. Front Immunol 2024; 14:1330500. [PMID: 38299151 PMCID: PMC10828040 DOI: 10.3389/fimmu.2023.1330500] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2023] [Accepted: 12/28/2023] [Indexed: 02/02/2024] Open
Abstract
Systemic lupus erythematosus (SLE) is a systemic chronic disease initiated by an abnormal immune response to self and can affect multiple organs. SLE is characterized by the production of autoantibodies and the deposition of immune complexes. In regard to the clinical observations assessed by rheumatologists, several chemokines and cytokines also contribute to disease progression. One such chemokine and adhesion molecule is CX3CL1 (otherwise known as fractalkine). CX3CL1 is involved in cell trafficking and inflammation through recognition by its receptor, CX3CR1. The CX3CL1 protein consists of a chemokine domain and a mucin-like stalk that allows it to function both as a chemoattractant and as an adhesion molecule. In inflammation and specifically lupus, the literature displays contradictory evidence for the functions of CX3CL1/CX3CR1 interactions. In addition, the gut microbiota has been shown to play an important role in the pathogenesis of SLE. This review highlights current studies that illustrate the interactions of the gut microbiota and CX3CR1 in SLE.
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Affiliation(s)
- Rana A. Estaleen
- Department of Biomedical Sciences and Pathobiology, Virgnia-Maryland College of Veterinary Medicine, Virginia Tech, Blacksburg, VA, United States
| | - Christopher M. Reilly
- Biomedical Sciences, Edward Via College of Osteopathic Medicine, Blacksburg, VA, United States
| | - Xin M. Luo
- Department of Biomedical Sciences and Pathobiology, Virgnia-Maryland College of Veterinary Medicine, Virginia Tech, Blacksburg, VA, United States
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Wang Z, Jiang D, Wang X, Jiang Y, Sun Q, Ling W, An X, Ji C, Li S, Qi Y, Kang B. Spermidine improves the antioxidant capacity and morphology of intestinal tissues and regulates intestinal microorganisms in Sichuan white geese. Front Microbiol 2024; 14:1292984. [PMID: 38293560 PMCID: PMC10824853 DOI: 10.3389/fmicb.2023.1292984] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2023] [Accepted: 12/29/2023] [Indexed: 02/01/2024] Open
Abstract
Introduction Intestinal health is very important to the health of livestock and poultry, and is even a major determining factor in the performance of livestock and poultry production. Spermidine is a type of polyamine that is commonly found in a variety of foods, and can resist oxidative stress, promote cell proliferation and regulate intestinal flora. Methods In this study, we explored the effects of spermidine on intestinal health under physiological states or oxidative stress conditions by irrigation with spermidine and intraperitoneal injection of 3-Nitropropionic acid (3-NPA) in Sichuan white goose. Results and discussion Our results showed that spermidine could increase the ratio of intestinal villus to crypt and improve intestinal morphology. In addition, spermidine can also reduce malondialdehyde (MDA) accumulation caused by 3-NPA by increasing superoxide dismutase (SOD), catalase (CAT), and glutathione peroxidase (GPX) enzyme activity, thus alleviating intestinal damage. Furthermore, spermidine can regulate intestinal digestive enzyme activities and affect intestinal digestion and absorption ability. Spermidine can also promote an increase in intestinal microbial diversity and abundance and alleviate the change of microflora structure caused by 3-NPA. In conclusion, spermidine promotes the production of beneficial intestinal metabolites such as Wikstromol, Alpha-bisabolol and AS 1-5, thus improving the level of intestinal health. Taken together, these results indicate that spermidine can improve intestinal health by improving intestinal morphology, increasing antioxidant capacity and regulating intestinal flora structure.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | | | - Bo Kang
- State Key Laboratory of Swine and Poultry Breeding Industry, Farm Animal Genetic Resource Exploration and Innovation Key Laboratory of Sichuan Province, College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, China
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Wang Z, Jiang D, Zhang M, Teng Y, Huang Y. Causal association between gut microbiota and fibromyalgia: a Mendelian randomization study. Front Microbiol 2024; 14:1305361. [PMID: 38260871 PMCID: PMC10800605 DOI: 10.3389/fmicb.2023.1305361] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2023] [Accepted: 12/20/2023] [Indexed: 01/24/2024] Open
Abstract
Background Fibromyalgia (FM) is a syndrome characterized by chronic and widespread musculoskeletal pain. A number of studies have implied a potential association between gut microbiota and FM. However, the casual association between gut microbiota and FM remains unknown. Method Mendelian randomization (MR) study was conducted using the summary statistics of genetic variants from the genome-wide association study (GWAS). Inverse variance weighted (IVW), combined with MR-Egger and weighted median were used to investigate the causal association between 119 gut microbiota genera and FM. Sensitivity analyses were performed on the MR results, including heterogeneity test, leave-one-out test and pleiotropy test. Results A total of 1,295 single nucleotide polymorphism (SNPs) were selected as instrumental variables (IVs), with no significant heterogeneity and pleiotropy according to the sensitivity analyses. Five gut microbiota genera were found to have significant casual association with FM. Coprococcus2 (OR = 2.317, p-value = 0.005, 95% CI: 1.289-4.167), Eggerthella (OR = 1.897, p-value = 0.001, 95% CI: 1.313-2.741) and Lactobacillus (OR = 1.576, p-value =0.020, 95% CI: 1.073-2.315) can increase the risk of FM. FamillyXIIIUCG001 (OR = 0.528, p-value = 0.038, 95% CI: 0.289-0.964) and Olsenella (OR = 0.747, p-value = 0.050, 95% CI: 0.557-1.000) can decrease the risk of FM. Conclusion This MR study found that gut microbiota is casually associated with FM. New insights into the mechanisms of FM mediated by gut microbiota are provided.
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Affiliation(s)
- Zhaohua Wang
- Beijing Engineering Research Center of Food Environment and Public Health, Minzu University of China, Beijing, China
- College of life and Environmental Science, Minzu University of China, Beijing, China
| | - Dan Jiang
- College of Food Science and Engineering, Dalian Ocean University, Dalian, China
| | - Min Zhang
- Beijing Engineering Research Center of Food Environment and Public Health, Minzu University of China, Beijing, China
- College of life and Environmental Science, Minzu University of China, Beijing, China
| | - Yu Teng
- Beijing Engineering Research Center of Food Environment and Public Health, Minzu University of China, Beijing, China
- College of life and Environmental Science, Minzu University of China, Beijing, China
| | - Yaojiang Huang
- Beijing Engineering Research Center of Food Environment and Public Health, Minzu University of China, Beijing, China
- College of life and Environmental Science, Minzu University of China, Beijing, China
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Kirby TO, Sapp PA, Townsend JR, Govaert M, Duysburgh C, Marzorati M, Marshall TM, Esposito R. AG1 ® Induces a Favorable Impact on Gut Microbial Structure and Functionality in the Simulator of Human Intestinal Microbial Ecosystem ® Model. Curr Issues Mol Biol 2024; 46:557-569. [PMID: 38248338 PMCID: PMC10814853 DOI: 10.3390/cimb46010036] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2023] [Revised: 01/02/2024] [Accepted: 01/03/2024] [Indexed: 01/23/2024] Open
Abstract
Modulation of the human gut microbiome has become an area of interest in the nutraceutical space. We explored the effect of the novel foundational nutrition supplement AG1® on the composition of human microbiota in an in vitro experimental design. Employing the Simulator of Human Intestinal Microbial Ecosystem (SHIME®) model, AG1® underwent digestion, absorption, and subsequent colonic microenvironment simulation under physiologically relevant conditions in healthy human fecal inocula. Following 48 h of colonic simulation, the gut microbiota were described using shallow shotgun, whole genome sequencing. Metagenomic data were used to describe changes in community structure (alpha diversity, beta diversity, and changes in specific taxa) and community function (functional heterogeneity and changes in specific bacterial metabolic pathways). Results showed no significant change in alpha diversity, but a significant effect of treatment and donor and an interaction between the treatment and donor effect on structural heterogeneity likely stemming from the differential enrichment of eight bacterial taxa. Similar findings were observed for community functional heterogeneity likely stemming from the enrichment of 20 metabolic pathways characterized in the gene ontology term database. It is logical to conclude that an acute dose of AG1 has significant effects on gut microbial composition that may translate into favorable effects in humans.
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Affiliation(s)
- Trevor O. Kirby
- Research, Nutrition, and Innovation, Athletic Greens International, Carson City, NV 89701, USA; (P.A.S.); (J.R.T.); (T.M.M.); (R.E.)
| | - Philip A. Sapp
- Research, Nutrition, and Innovation, Athletic Greens International, Carson City, NV 89701, USA; (P.A.S.); (J.R.T.); (T.M.M.); (R.E.)
| | - Jeremy R. Townsend
- Research, Nutrition, and Innovation, Athletic Greens International, Carson City, NV 89701, USA; (P.A.S.); (J.R.T.); (T.M.M.); (R.E.)
- Health & Human Performance, Concordia University Chicago, River Forest, IL 60305, USA
| | - Marlies Govaert
- ProDigest BVBA, B-9052 Ghent, Belgium; (M.G.); (C.D.); (M.M.)
| | - Cindy Duysburgh
- ProDigest BVBA, B-9052 Ghent, Belgium; (M.G.); (C.D.); (M.M.)
| | - Massimo Marzorati
- ProDigest BVBA, B-9052 Ghent, Belgium; (M.G.); (C.D.); (M.M.)
- Center of Microbial Ecology and Technology (CMET), Ghent University, B-9000 Ghent, Belgium
| | - Tess M. Marshall
- Research, Nutrition, and Innovation, Athletic Greens International, Carson City, NV 89701, USA; (P.A.S.); (J.R.T.); (T.M.M.); (R.E.)
| | - Ralph Esposito
- Research, Nutrition, and Innovation, Athletic Greens International, Carson City, NV 89701, USA; (P.A.S.); (J.R.T.); (T.M.M.); (R.E.)
- Department of Nutrition, Food Studies, and Public Health, New York University-Steinhardt, New York, NY 10003, USA
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Blenkinsopp HC, Seidler K, Barrow M. Microbial Imbalance and Intestinal Permeability in the Pathogenesis of Rheumatoid Arthritis: A Mechanism Review with a Focus on Bacterial Translocation, Citrullination, and Probiotic Intervention. JOURNAL OF THE AMERICAN NUTRITION ASSOCIATION 2024; 43:59-76. [PMID: 37294082 DOI: 10.1080/27697061.2023.2211129] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/09/2023] [Accepted: 05/01/2023] [Indexed: 06/10/2023]
Abstract
This review aims to investigate the role of intestinal permeability (IP) in rheumatoid arthritis (RA), following the hypotheses that leakage of intestinal microbes can influence increased citrullination of peptides leading to anti-citrullinated protein antibody (ACPA) production and inflammation in RA; and that leaked microbes can migrate to the peripheral joints, leading to immune responses and synovitis in peripheral joints. This review explored the evidence for the link between microbial dysbiosis and increased IP in the inflammatory state in RA, as well as the role of increased citrullination and bacterial translocation in the link between microbiota and immune responses in RA. Furthermore, this research aims to evaluate the potential effect of probiotics on RA symptoms and pathogenesis via proposed mechanisms, including the support of microbial balance and suppression of inflammatory factors in RA. A systematic literature search was conducted in three tranches (review, mechanism, intervention). 71 peer-reviewed papers met the inclusions criteria and are summarized in a narrative analysis. Primary studies were critically appraised, synthesized and their relevance to clinical practice evaluated. Evidence found in this mechanism review consistently supported intestinal dysbiosis and increased IP in arthritis. An altered intestinal microbiome was demonstrated in RA with specific microbes such as Collinsella and Eggerthella correlating with increased IP, mucosal inflammation, and immune responses. Hypercitrullination and ACPA production correlated with arthritic symptoms and intestinal microbes were shown to influence hypercitrullination. Some in vitro and animal studies demonstrated a link between leakage of microbes and bacterial translocation, but further research is needed to elucidate the link between IP and citrullination. Probiotic intervention studies evidenced reductions in inflammatory markers IL-6 and TNFα, associated with proliferation of synovial tissue and pain perception in RA joint inflammation. Despite some conflict in the literature, probiotics may present a promising nutritional intervention in the suppression of both, disease activity and inflammatory markers.Key teaching pointsThere is evidence for a dysbiotic profile of the RA gut with specific RA-associated microbes.Increased intestinal permeability and leakage of PAD enzyme facilitates citrullination of peptides.Hypercitrullination and ACPA production correlate to arthritic signs.Microbial leakage and translocation plays a role in the pathogenesis of RA.Probiotics (e.g. L. Casei 01) may reduce inflammation and ameliorate RA symptoms.
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Affiliation(s)
- Holly C Blenkinsopp
- The Centre for Nutritional Education and Lifestyle Management (CNELM), Wokingham, UK
| | - Karin Seidler
- The Centre for Nutritional Education and Lifestyle Management (CNELM), Wokingham, UK
| | - Michelle Barrow
- The Centre for Nutritional Education and Lifestyle Management (CNELM), Wokingham, UK
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46
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Essex M, Rios Rodriguez V, Rademacher J, Proft F, Löber U, Markó L, Pleyer U, Strowig T, Marchand J, Kirwan JA, Siegmund B, Forslund SK, Poddubnyy D. Shared and Distinct Gut Microbiota in Spondyloarthritis, Acute Anterior Uveitis, and Crohn's Disease. Arthritis Rheumatol 2024; 76:48-58. [PMID: 37471465 DOI: 10.1002/art.42658] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2022] [Revised: 06/26/2023] [Accepted: 07/13/2023] [Indexed: 07/22/2023]
Abstract
OBJECTIVE Spondyloarthritis (SpA) is a group of immune-mediated diseases highly concomitant with nonmusculoskeletal inflammatory disorders, such as acute anterior uveitis (AAU) and Crohn's disease (CD). The gut microbiome represents a promising avenue to elucidate shared and distinct underlying pathophysiology. METHODS We performed 16S ribosomal RNA sequencing on stool samples of 277 patients (72 CD, 103 AAU, and 102 SpA) included in the German Spondyloarthritis Inception Cohort and 62 back pain controls without any inflammatory disorder. Discriminatory statistical methods were used to disentangle microbial disease signals from one another and a wide range of potential confounders. Patients were naive to or had not received treatment with biological disease-modifying antirheumatic drugs (DMARDs) for >3 months before enrollment, providing a better approximation of a true baseline disease signal. RESULTS We identified a shared, immune-mediated disease signal represented by low abundances of Lachnospiraceae taxa relative to controls, most notably Fusicatenibacter, which was most abundant in controls receiving nonsteroidal antiinflammatory drug monotherapy and implied to partially mediate higher serum C-reactive protein. Patients with SpA showed an enrichment of Collinsella, whereas human leukocyte antigen (HLA)-B27+ individuals displayed enriched Faecalibacterium. CD patients had higher abundances of a Ruminococcus taxon, and previous conventional/synthetic DMARD therapy was associated with increased Akkermansia. CONCLUSION Our work supports the existence of a common gut dysbiosis in SpA and related inflammatory pathologies. We reveal shared and disease-specific microbial associations and suggest potential mediators of disease activity. Validation studies are needed to clarify the role of Fusicatenibacter in gut-joint inflammation, and metagenomic resolution is needed to understand the relationship between Faecalibacterium commensals and HLA-B27.
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Affiliation(s)
- Morgan Essex
- Experimental and Clinical Research Center (ECRC; a cooperation of the Max Delbrück Center and Charité-Universitätsmedizin), Max Delbrück Center for Molecular Medicine in the Helmholtz Association (MDC), and Charité-Universitätsmedizin Berlin (a corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin), Berlin, Germany
| | - Valeria Rios Rodriguez
- Medical Department of Gastroenterology, Infectiology and Rheumatology, Campus Benjamin Franklin, Charité-Universitätsmedizin Berlin, Berlin, Germany
| | - Judith Rademacher
- Medical Department of Gastroenterology, Infectiology and Rheumatology, Campus Benjamin Franklin, Charité-Universitätsmedizin Berlin, and Berlin Institute of Health (BIH) at Charité-Universitätsmedizin Berlin, Berlin, Germany
| | - Fabian Proft
- Medical Department of Gastroenterology, Infectiology and Rheumatology, Campus Benjamin Franklin, Charité-Universitätsmedizin Berlin, Berlin, Germany
| | - Ulrike Löber
- ECRC, MDC, Charité-Universitätsmedizin Berlin and German Center for Cardiovascular Research (DZHK), Berlin, Germany
| | - Lajos Markó
- ECRC, MDC, Charité-Universitätsmedizin Berlin and German Center for Cardiovascular Research (DZHK), Berlin, Germany
| | - Uwe Pleyer
- Department of Ophthalmology, Campus Virchow, Charité-Universitätsmedizin Berlin, Berlin, Germany
| | - Till Strowig
- Helmholtz Center for Infection Research, Braunschweig, Germany, and Cluster of Excellence RESIST (EXC 2155), Hannover Medical School and Center for Individualized Infection Medicine (CiiM; a joint venture between the Helmholtz Center for Infection Research and the Hannover Medical School), Hannover, Germany
| | - Jérémy Marchand
- MDC and BIH Metabolomics Platform at Charité-Universitätsmedizin Berlin, Berlin, Germany
| | - Jennifer A Kirwan
- MDC and BIH Metabolomics Platform at Charité-Universitätsmedizin Berlin, Berlin, Germany, and University of Nottingham School of Veterinary Medicine and Science, Loughborough, UK
| | - Britta Siegmund
- Medical Department of Gastroenterology, Infectiology and Rheumatology, Campus Benjamin Franklin, Charité-Universitätsmedizin Berlin, Berlin, Germany
| | - Sofia K Forslund
- ECRC, MDC, Charité-Universitätsmedizin Berlin, and DZHK, Berlin, and Structural and Computational Biology Unit, EMBL, Heidelberg, Germany
| | - Denis Poddubnyy
- Department of Gastroentergology, Infectiology and Rheumatology, Campus Benjamin Franklin, Charité-Universitätsmedizin Berlin and German Rheumatism Research Center (DRFZ), Berlin, Germany
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47
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Gargari G, Mantegazza G, Cremon C, Taverniti V, Valenza A, Barbaro MR, Marasco G, Duncan R, Fiore W, Ferrari R, De Vitis V, Barbara G, Guglielmetti S. Collinsella aerofaciens as a predictive marker of response to probiotic treatment in non-constipated irritable bowel syndrome. Gut Microbes 2024; 16:2298246. [PMID: 38178601 PMCID: PMC10773624 DOI: 10.1080/19490976.2023.2298246] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/11/2023] [Accepted: 12/19/2023] [Indexed: 01/06/2024] Open
Abstract
Probiotics are exploited for adjuvant treatment in IBS, but reliable guidance for selecting the appropriate probiotic to adopt for different forms of IBS is lacking. We aimed to identify markers for recognizing non-constipated (NC) IBS patients that may show significant clinical improvements upon treatment with the probiotic strain Lacticaseibacillus paracasei DG (LDG). To this purpose, we performed a post-hoc analysis of samples collected during a multicenter, double-blind, parallel-group, placebo-controlled trial in which NC-IBS patients were randomized to receive at least 24 billion CFU LDG or placebo capsules b.i.d. for 12 weeks. The primary clinical endpoint was the composite response based on improved abdominal pain and fecal type. The fecal microbiome and serum markers of intestinal (PV1 and zonulin), liver, and kidney functions were investigated. We found that responders (R) in the probiotic arm (25%) differed from non-responders (NR) based on the abundance of 18 bacterial taxa, including the families Coriobacteriaceae, Dorea spp. and Collinsella aerofaciens, which were overrepresented in R patients. These taxa also distinguished R (but not NR) patients from healthy controls. Probiotic intervention significantly reduced the abundance of these bacteria in R, but not in NR. Analogous results emerged for C. aerofaciens from the analysis of data from a previous trial on IBS with the same probiotic. Finally, C. aerofaciens was positively correlated with the plasmalemmal vesicle associated protein-1 (PV-1) and the markers of liver function. In conclusion, LDG is effective on NC-IBS patients with NC-IBS with a greater abundance of potential pathobionts. Among these, C. aerofaciens has emerged as a potential predictor of probiotic efficacy.
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Affiliation(s)
- Giorgio Gargari
- Division of Food Microbiology and Bioprocesses, Department of Food, Environmental and Nutritional Sciences (DeFENS), University of Milan, Milan, Italy
| | - Giacomo Mantegazza
- Division of Food Microbiology and Bioprocesses, Department of Food, Environmental and Nutritional Sciences (DeFENS), University of Milan, Milan, Italy
| | - Cesare Cremon
- Dipartimento di Scienze Mediche e Chirurgiche, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna, Italy
- Department of Medical and Surgical Sciences, University of Bologna, Bologna, Italy
| | - Valentina Taverniti
- Division of Food Microbiology and Bioprocesses, Department of Food, Environmental and Nutritional Sciences (DeFENS), University of Milan, Milan, Italy
| | - Alice Valenza
- Division of Food Microbiology and Bioprocesses, Department of Food, Environmental and Nutritional Sciences (DeFENS), University of Milan, Milan, Italy
| | - Maria Raffaella Barbaro
- Dipartimento di Scienze Mediche e Chirurgiche, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna, Italy
- Department of Medical and Surgical Sciences, University of Bologna, Bologna, Italy
| | - Giovanni Marasco
- Dipartimento di Scienze Mediche e Chirurgiche, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna, Italy
- Department of Medical and Surgical Sciences, University of Bologna, Bologna, Italy
| | - Robin Duncan
- Division of Food Microbiology and Bioprocesses, Department of Food, Environmental and Nutritional Sciences (DeFENS), University of Milan, Milan, Italy
| | | | | | | | - Giovanni Barbara
- Dipartimento di Scienze Mediche e Chirurgiche, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna, Italy
- Department of Medical and Surgical Sciences, University of Bologna, Bologna, Italy
| | - Simone Guglielmetti
- Division of Food Microbiology and Bioprocesses, Department of Food, Environmental and Nutritional Sciences (DeFENS), University of Milan, Milan, Italy
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48
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Park DE, Aziz M, Koch BJ, Roach K, Clabots C, Johnson JR, Price LB, Liu CM. Gut microbiome predictors of Escherichia coli sequence type 131 colonization and loss. EBioMedicine 2024; 99:104909. [PMID: 38096689 PMCID: PMC10758731 DOI: 10.1016/j.ebiom.2023.104909] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2023] [Revised: 11/15/2023] [Accepted: 11/28/2023] [Indexed: 01/05/2024] Open
Abstract
BACKGROUND Escherichia coli sequence type 131 (ST131), specifically its fluoroquinolone-resistant H30R clade (ST131-H30R), is a global multidrug-resistant pathogen. The gut microbiome's role in ST131-H30R intestinal carriage is undefined. METHODS Veterans and their household members underwent longitudinal fecal swab surveillance for ST131 in 2014-2018. The fecal microbiome was characterized by 16S rRNA qPCR and sequencing. We evaluated associations between ST131-H30R carriage and gut microbiome at baseline by random forest models to identify the most informative gut bacterial phyla and genera attributes for ST131 and ST131-H30R carriage status. Next, we assessed longitudinal associations between fecal microbiome and ST131-H30R carriage using a mixed-effects logistic regression with longitudinal measures. FINDINGS Of the 519 participants, 78 were carriers of ST131, among whom 49 had ST131-H30R. At the baseline timepoint, H30R-positive participants had higher proportional abundances of Actinobacteria phylum (mean: 4.9% vs. 3.1%) than ST131-negative participants. H30R-positive participants also had higher abundances of Collinsella (mean: 2.3% vs. 1.1%) and lower abundances of Alistipes (mean: 2.1% vs. 2.6%) than ST131-negative participants. In the longitudinal analysis, Collinsella abundance correlated positively with ST131-H30R carriage status and negatively with the loss of ST131-H30R. Conversely, Alistipes corresponded with the loss and persistent absence of ST131-H30R even in the presence of a household exposure. INTERPRETATION Abundances of specific fecal bacteria correlated with ST131-H30R carriage, persistence, and loss, suggesting their potential as targets for microbiome-based strategies to reduce carriage of ST131-H30R, a significant risk factor for invasive infections. FUNDING This work was supported in part by National Institute of Allergy and Infectious Diseases of the National Institutes of Health under award numbers R21AI117654 and UM1AI104681 and the Office of Research and Development, Department of Veterans Affairs. The content is solely the responsibility of the authors and does not necessarily represent the official views of the National Institutes of Health or the Department of Veterans Affairs.
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Affiliation(s)
- Daniel E Park
- Department of Environmental and Occupational Health, Milken Institute School of Public Health, George Washington University, Washington, DC, 20052, USA
| | - Maliha Aziz
- Department of Environmental and Occupational Health, Milken Institute School of Public Health, George Washington University, Washington, DC, 20052, USA
| | - Benjamin J Koch
- Center for Ecosystem Science and Society, Northern Arizona University, P.O. Box 5620, Flagstaff, AZ, 86011, USA; Department of Biological Sciences, Northern Arizona University, 617 S Beaver St., Flagstaff, AZ, 86011, USA
| | - Kelsey Roach
- Department of Environmental and Occupational Health, Milken Institute School of Public Health, George Washington University, Washington, DC, 20052, USA
| | - Connie Clabots
- Minneapolis Veterans Affairs Health Care System, 1 Veterans Dr, Minneapolis, MN, 55417, USA
| | - James R Johnson
- Minneapolis Veterans Affairs Health Care System, 1 Veterans Dr, Minneapolis, MN, 55417, USA; Department of Medicine, University of Minnesota, 401 East River Parkway, VCRC 1st, UK Floor, Suite 131, Minneapolis, MN, 55455, USA
| | - Lance B Price
- Department of Environmental and Occupational Health, Milken Institute School of Public Health, George Washington University, Washington, DC, 20052, USA
| | - Cindy M Liu
- Department of Environmental and Occupational Health, Milken Institute School of Public Health, George Washington University, Washington, DC, 20052, USA.
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49
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Seymour BJ, Trent B, Allen BE, Berlinberg AJ, Tangchittsumran J, Jubair WK, Chriswell ME, Liu S, Ornelas A, Stahly A, Alexeev EE, Dowdell AS, Sneed SL, Fechtner S, Kofonow JM, Robertson CE, Dillon SM, Wilson CC, Anthony RM, Frank DN, Colgan SP, Kuhn KA. Microbiota-dependent indole production stimulates the development of collagen-induced arthritis in mice. J Clin Invest 2023; 134:e167671. [PMID: 38113112 PMCID: PMC10866668 DOI: 10.1172/jci167671] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2022] [Accepted: 12/13/2023] [Indexed: 12/21/2023] Open
Abstract
Altered tryptophan catabolism has been identified in inflammatory diseases like rheumatoid arthritis (RA) and spondyloarthritis (SpA), but the causal mechanisms linking tryptophan metabolites to disease are unknown. Using the collagen-induced arthritis (CIA) model, we identified alterations in tryptophan metabolism, and specifically indole, that correlated with disease. We demonstrated that both bacteria and dietary tryptophan were required for disease and that indole supplementation was sufficient to induce disease in their absence. When mice with CIA on a low-tryptophan diet were supplemented with indole, we observed significant increases in serum IL-6, TNF, and IL-1β; splenic RORγt+CD4+ T cells and ex vivo collagen-stimulated IL-17 production; and a pattern of anti-collagen antibody isotype switching and glycosylation that corresponded with increased complement fixation. IL-23 neutralization reduced disease severity in indole-induced CIA. Finally, exposure of human colonic lymphocytes to indole increased the expression of genes involved in IL-17 signaling and plasma cell activation. Altogether, we propose a mechanism by which intestinal dysbiosis during inflammatory arthritis results in altered tryptophan catabolism, leading to indole stimulation of arthritis development. Blockade of indole generation may present a unique therapeutic pathway for RA and SpA.
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Affiliation(s)
| | - Brandon Trent
- Division of Rheumatology, Department of Medicine, and
| | | | | | | | | | | | - Sucai Liu
- Division of Rheumatology, Department of Medicine, and
| | - Alfredo Ornelas
- Mucosal Inflammation Program and Division of Gastroenterology and Hepatology, Department of Medicine, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA
| | - Andrew Stahly
- Division of Rheumatology, Department of Medicine, and
| | - Erica E. Alexeev
- Mucosal Inflammation Program and Division of Gastroenterology and Hepatology, Department of Medicine, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA
| | - Alexander S. Dowdell
- Mucosal Inflammation Program and Division of Gastroenterology and Hepatology, Department of Medicine, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA
| | - Sunny L. Sneed
- Center for Immunology and Inflammatory Diseases, Division of Rheumatology, Allergy and Immunology, Department of Medicine, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | | | - Jennifer M. Kofonow
- Division of Infectious Diseases, Department of Medicine, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA
| | - Charles E. Robertson
- Division of Infectious Diseases, Department of Medicine, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA
| | - Stephanie M. Dillon
- Division of Infectious Diseases, Department of Medicine, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA
| | - Cara C. Wilson
- Division of Infectious Diseases, Department of Medicine, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA
| | - Robert M. Anthony
- Center for Immunology and Inflammatory Diseases, Division of Rheumatology, Allergy and Immunology, Department of Medicine, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - Daniel N. Frank
- Division of Infectious Diseases, Department of Medicine, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA
| | - Sean P. Colgan
- Mucosal Inflammation Program and Division of Gastroenterology and Hepatology, Department of Medicine, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA
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50
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Riazati N, Kable ME, Stephensen CB. Association of intestinal bacteria with immune activation in a cohort of healthy adults. Microbiol Spectr 2023; 11:e0102723. [PMID: 37819145 PMCID: PMC10715013 DOI: 10.1128/spectrum.01027-23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2023] [Accepted: 08/13/2023] [Indexed: 10/13/2023] Open
Abstract
IMPORTANCE Chronic inflammation may develop over time in healthy adults as a result of a variety of factors, such as poor diet directly affecting the composition of the intestinal microbiome, or by causing obesity, which may also affect the intestinal microbiome. These effects may trigger the activation of an immune response that could eventually lead to an inflammation-related disease, such as colon cancer. Before disease develops it may be possible to identify subclinical inflammation or immune activation attributable to specific intestinal bacteria normally found in the gut that could result in future adverse health impacts. In the present study, we examined a group of healthy men and women across a wide age range with and without obesity to determine which bacteria were associated with particular types of immune activation to identify potential preclinical markers of inflammatory disease risk. Several associations were found that may help develop dietary interventions to lower disease risk.
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Affiliation(s)
- Niknaz Riazati
- Graduate Group of Molecular, Cellular, and Integrative Physiology, University of California, Davis, California, USA
| | - Mary E. Kable
- Agricultural Research Service, Western Human Nutrition Research Center, USDA, Immunity and Disease Prevention Unit, Davis, California, USA
- Department of Nutrition, University of California, Davis, California, USA
| | - Charles B. Stephensen
- Agricultural Research Service, Western Human Nutrition Research Center, USDA, Immunity and Disease Prevention Unit, Davis, California, USA
- Department of Nutrition, University of California, Davis, California, USA
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