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Derluyn N, Foucart V, Verce M, Abdo R, Vaudoisey L, Lipski D, Flamand V, Everard A, Bruyns C, Willermain F. High salt diet alleviates disease severity in native experimental autoimmune uveitis. FRONTIERS IN OPHTHALMOLOGY 2024; 4:1370374. [PMID: 38984146 PMCID: PMC11182228 DOI: 10.3389/fopht.2024.1370374] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/14/2024] [Accepted: 04/19/2024] [Indexed: 07/11/2024]
Abstract
Background Recent studies reported a link between high salt diet (HSD) and clinical exacerbation in mouse models of autoimmune diseases, mainly through the induction of pathogenic Th17 cells and/or HSD-induced dysbiosis. However, the topic remains controversial and not fully understood. Purpose In this study, we investigated the effects of HSD on the development of experimental autoimmune uveitis (EAU) in C57BL/6J mice. Methods and results Unexpectedly, our data showed a significant attenuating effect of HSD on disease severity of native EAU, induced by direct immunization with IRBP peptide. That said, HSD had no effect on EAU disease severity induced by adoptive transfer of semi-purified auto-reactive IRBP-specific T lymphocytes. Accordingly, HSD did not affect IRBP-specific systemic afferent immune response as attested by no HSD-linked changes in T lymphocytes proliferation, cytokine production and Treg proportion. Gut microbiota analysis from cecal samples in naïve and EAU mice demonstrated that HSD affected differentially α-diversity between groups, whereas β-diversity was significantly modified in all groups. Unknown Tannerellaceae was the only taxon associated to HSD exposure in all treatment groups. Interestingly, a significantly higher abundance of unknown Gastranaerophilales, with potential anti-inflammatory properties, appeared in HSD-fed native EAU mice, only. Discussion In conclusion, our study suggests a possible impact of HSD on gut microbiota composition and consequently on development and clinical severity of EAU. Further studies are required to investigate the potential beneficial role of Gastranaerophilales in EAU.
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Affiliation(s)
- Naomi Derluyn
- Institute of Interdisciplinary Research (IRIBHM), Université Libre de Bruxelles (ULB), Brussels, Belgium
- Department of Ophthalmology, CHU Saint-Pierre, Université Libre de Bruxelles (ULB), Brussels, Belgium
- Department of Ophthalmology, CHU Brugmann, Université Libre de Bruxelles (ULB), Brussels, Belgium
| | - Vincent Foucart
- Institute of Interdisciplinary Research (IRIBHM), Université Libre de Bruxelles (ULB), Brussels, Belgium
- Department of Ophthalmology, CHU Saint-Pierre, Université Libre de Bruxelles (ULB), Brussels, Belgium
| | - Marko Verce
- Metabolism and Nutrition Research Group, Louvain Drug Research Institute, UCLouvain, Université Catholique de Louvain, Brussels, Belgium
- WELBIO Department, WEL Research Institute, Walloon Excellence in Life Sciences and BIOtechnology (WELBIO), Wavre, Belgium
| | - Rami Abdo
- Institute of Interdisciplinary Research (IRIBHM), Université Libre de Bruxelles (ULB), Brussels, Belgium
- Department of Ophthalmology, Hôpital Universitaire de Bruxelles (HUB) - Hôpital Erasme, Université Libre de Bruxelles (ULB), Brussels, Belgium
| | - Louis Vaudoisey
- Institute of Interdisciplinary Research (IRIBHM), Université Libre de Bruxelles (ULB), Brussels, Belgium
- Department of Ophthalmology, CHU Saint-Pierre, Université Libre de Bruxelles (ULB), Brussels, Belgium
| | - Deborah Lipski
- Institute of Interdisciplinary Research (IRIBHM), Université Libre de Bruxelles (ULB), Brussels, Belgium
- Department of Ophthalmology, Hôpital Universitaire de Bruxelles (HUB) - Hôpital Erasme, Université Libre de Bruxelles (ULB), Brussels, Belgium
| | - Véronique Flamand
- Institute for Medical Immunology, Université Libre de Bruxelles (ULB), Charleroi, Belgium
| | - Amandine Everard
- Metabolism and Nutrition Research Group, Louvain Drug Research Institute, UCLouvain, Université Catholique de Louvain, Brussels, Belgium
- WELBIO Department, WEL Research Institute, Walloon Excellence in Life Sciences and BIOtechnology (WELBIO), Wavre, Belgium
| | - Catherine Bruyns
- Institute of Interdisciplinary Research (IRIBHM), Université Libre de Bruxelles (ULB), Brussels, Belgium
| | - François Willermain
- Institute of Interdisciplinary Research (IRIBHM), Université Libre de Bruxelles (ULB), Brussels, Belgium
- Department of Ophthalmology, CHU Saint-Pierre, Université Libre de Bruxelles (ULB), Brussels, Belgium
- Department of Ophthalmology, CHU Brugmann, Université Libre de Bruxelles (ULB), Brussels, Belgium
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Skrlova E, Uherkova E, Klimova A, Malarikova D, Svozilkova P, Matous P, Herynek V, Kucera T, Klener P, Heissigerova J. Experimental model of primary intraocular lymphoma based on BALB/CaNn strain and A20 cells is optimal for investigational research. Biomed Pap Med Fac Univ Palacky Olomouc Czech Repub 2024. [PMID: 38410917 DOI: 10.5507/bp.2024.003] [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: 02/28/2024] Open
Abstract
AIM The purpose of this project was to compare the characteristics of two experimental murine models of primary intraocular lymphoma (PIOL) and determine which experimental model is most suitable for further investigational research to elucidate the pathophysiology of PIOL and to find new therapeutical strategies. METHODS In both experimental models PIOL was induced in immunocompetent mice with intravitreal injection of syngeneic B-cell lymphoma cell lines. Murine strain C3H/HeN and cell line 38C13 were used in the first model and BALB/CaNn mice and cell line A20 in the second model. During the experiments, thorough clinical evaluation (using photo documentation, ultrasonography, and MRI) and histological evaluation were performed. RESULTS In both models, the percentage of PIOL development was high, reaching nearly 80%. Disease progression was faster in C3H/HeN with exophthalmos occurring on average on day 10. Vitreous involvement was a predominant sign in the clinical presentation of this group. In BALB/CaNn mice exophthalmos occurred on average on day 22. The predominant clinical sign in the BALB/CaNn group was tumorous infiltration of the retina, optic disc, and tumorous retinal detachment. CONCLUSION Slower progression of the disease in BALB/CaNn mice, greater possibility to examine the retina due to mild vitreous involvement, and later occurrence of exophthalmos makes this strain more suitable for further investigational research.
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Affiliation(s)
- Eva Skrlova
- Department of Ophthalmology, First Faculty of Medicine, Charles University and General University Hospital in Prague, Czech Republic
| | - Eva Uherkova
- Department of Ophthalmology, First Faculty of Medicine, Charles University and General University Hospital in Prague, Czech Republic
| | - Aneta Klimova
- Department of Ophthalmology, First Faculty of Medicine, Charles University and General University Hospital in Prague, Czech Republic
| | - Diana Malarikova
- Institute of Pathological Physiology, First Faculty of Medicine, Charles University, Czech Republic
- 1st Department of Medicine, Department of Haematology, First Faculty of Medicine, Charles University and General University Hospital in Prague, Czech Republic
| | - Petra Svozilkova
- Department of Ophthalmology, First Faculty of Medicine, Charles University and General University Hospital in Prague, Czech Republic
| | - Petr Matous
- Centre for Advanced Preclinical Imaging, First Faculty of Medicine, Charles University, Czech Republic
| | - Vit Herynek
- Centre for Advanced Preclinical Imaging, First Faculty of Medicine, Charles University, Czech Republic
| | - Tomas Kucera
- Institute of Histology and Embryology, First Faculty of Medicine, Charles University, Czech Republic
| | - Pavel Klener
- Institute of Pathological Physiology, First Faculty of Medicine, Charles University, Czech Republic
- 1st Department of Medicine, Department of Haematology, First Faculty of Medicine, Charles University and General University Hospital in Prague, Czech Republic
| | - Jarmila Heissigerova
- Department of Ophthalmology, First Faculty of Medicine, Charles University and General University Hospital in Prague, Czech Republic
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3
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Layús BI, Gómez MA, Cazorla SI, Rodriguez AV. A Postbiotic Formulation of Lactiplantibacillus plantarum CRL 759 Attenuates Endotoxin Induced Uveitis. Ocul Immunol Inflamm 2024:1-10. [PMID: 38335476 DOI: 10.1080/09273948.2024.2310173] [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: 11/13/2023] [Accepted: 01/21/2024] [Indexed: 02/12/2024]
Abstract
PURPOSE To evaluate the anti-inflammatory activity of a cell-free supernatant from Lactiplantibacillus plantarum CRL 759, in phosphate buffer modified according to Sorensen called POF-759. METHODS The activity of POF-759 administered by means of eye drops was evaluated on animals subcutaneously injected with the lipopolysaccharide animals in which uveitis was induced by a subcutaneous injection of lipopolysaccharide (EIU). Clinical signs of ocular inflammation, cytokines and proteins were examined in the aqueous humor. Additionally, cellular infiltration was evaluated by histopathological analysis. RESULTS The new postbiotic administered locally decreases signs of ocular damage, the number of infiltrating cells in the anterior and posterior chambers, the proinflammatory mediators and the proteins in the aqueous humor on mice with EIU. CONCLUSIONS Our results provide an impetus to relieve ocular inflammation and to identify and develop preventive and therapeutic approaches, to avoid deterioration and to maintain healthy eyes on inflammatory processes.
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Affiliation(s)
- Bárbara Ivana Layús
- Centro de Referencia para Lactobacilos (CERELA-CONICET), San Miguel de Tucumán, Argentina
| | - María Alejandra Gómez
- Servicio de Oftalomolgía, Hospital Ángel C. Padilla, San Miguel de Tucumán, Argentina
| | - Silvia Inés Cazorla
- Centro de Referencia para Lactobacilos (CERELA-CONICET), San Miguel de Tucumán, Argentina
- Cátedra de Inmunología, Facultad de Bioquímica, Química y Farmacia, Universidad Nacional de Tucumán, San Miguel de Tucumán, Argentina
| | - Ana Virginia Rodriguez
- Centro de Referencia para Lactobacilos (CERELA-CONICET), San Miguel de Tucumán, Argentina
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Lapaquette P, Terrat S, Proukhnitzky L, Martine L, Grégoire S, Buteau B, Cabaret S, Rieu A, Bermúdez-Humarán LG, Gabrielle PH, Creuzot-Garcher C, Berdeaux O, Acar N, Bringer MA. Long-term intake of Lactobacillus helveticus enhances bioavailability of omega-3 fatty acids in the mouse retina. NPJ Biofilms Microbiomes 2024; 10:4. [PMID: 38238339 PMCID: PMC10796366 DOI: 10.1038/s41522-023-00474-5] [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: 02/10/2023] [Accepted: 12/11/2023] [Indexed: 01/22/2024] Open
Abstract
Omega-3 (n-3) polyunsaturated fatty acids (PUFAs), particularly docosahexaenoic acid (DHA), are required for the structure and function of the retina. Several observational studies indicate that consumption of a diet with relatively high levels of n-3 PUFAs, such as those provided by fish oils, has a protective effect against the development of age-related macular degeneration. Given the accumulating evidence showing the role of gut microbiota in regulating retinal physiology and host lipid metabolism, we evaluated the potential of long-term dietary supplementation with the Gram-positive bacterium Lactobacillus helveticus strain VEL12193 to modulate the retinal n-3 PUFA content. A set of complementary approaches was used to study the impact of such a supplementation on the gut microbiota and host lipid/fatty acid (FA) metabolism. L. helveticus-supplementation was associated with a decrease in retinal saturated FAs (SFAs) and monounsaturated FAs (MUFAs) as well as an increase in retinal n-3 and omega-6 (n-6) PUFAs. Interestingly, supplementation with L. helveticus enriched the retina in C22:5n-3 (docosapentaenoic acid, DPA), C22:6n-3 (DHA), C18:2n-6 (linoleic acid, LA) and C20:3n-6 (dihomo gamma-linolenic acid, DGLA). Long-term consumption of L. helveticus also modulated gut microbiota composition and some changes in OTUs abundance correlated with the retinal FA content. This study provides a proof of concept that targeting the gut microbiota could be an effective strategy to modulate the retinal FA content, including that of protective n-3 PUFAs, thus opening paths for the design of novel preventive and/or therapeutical strategies for retinopathies.
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Affiliation(s)
- Pierre Lapaquette
- Univ. Bourgogne, UMR PAM A 02.102, Institut Agro Dijon, INRAE, F-21000 Dijon, France
| | - Sébastien Terrat
- Agroécologie, Institut Agro, INRAE, Univ. Bourgogne, Univ. Bourgogne Franche-Comté, F-21000, Dijon, France
| | - Lil Proukhnitzky
- Univ. Bourgogne, UMR PAM A 02.102, Institut Agro Dijon, INRAE, F-21000 Dijon, France
- Centre des Sciences du Goût et de l'Alimentation, CNRS, INRAE, Institut Agro, Université de Bourgogne, F-21000, Dijon, France
| | - Lucy Martine
- Centre des Sciences du Goût et de l'Alimentation, CNRS, INRAE, Institut Agro, Université de Bourgogne, F-21000, Dijon, France
| | - Stéphane Grégoire
- Centre des Sciences du Goût et de l'Alimentation, CNRS, INRAE, Institut Agro, Université de Bourgogne, F-21000, Dijon, France
| | - Bénédicte Buteau
- Centre des Sciences du Goût et de l'Alimentation, CNRS, INRAE, Institut Agro, Université de Bourgogne, F-21000, Dijon, France
| | - Stéphanie Cabaret
- ChemoSens Platform, Centre des Sciences du Goût et de l'Alimentation, CNRS, INRAE, Université Bourgogne Franche-Comté, Institut Agro; INRAE, PROBE Research infrastructure, ChemoSens facility, F-21000, Dijon, France
| | - Aurélie Rieu
- Univ. Bourgogne, UMR PAM A 02.102, Institut Agro Dijon, INRAE, F-21000 Dijon, France
| | - Luis G Bermúdez-Humarán
- Micalis Institute, Université Paris-Saclay, INRAE, AgroParisTech, F-78350, Jouy-en-Josas, France
| | - Pierre-Henry Gabrielle
- Centre des Sciences du Goût et de l'Alimentation, CNRS, INRAE, Institut Agro, Université de Bourgogne, F-21000, Dijon, France
- Department of Ophthalmology, University Hospital, F-21000, Dijon, France
| | - Catherine Creuzot-Garcher
- Centre des Sciences du Goût et de l'Alimentation, CNRS, INRAE, Institut Agro, Université de Bourgogne, F-21000, Dijon, France
- Department of Ophthalmology, University Hospital, F-21000, Dijon, France
| | - Olivier Berdeaux
- ChemoSens Platform, Centre des Sciences du Goût et de l'Alimentation, CNRS, INRAE, Université Bourgogne Franche-Comté, Institut Agro; INRAE, PROBE Research infrastructure, ChemoSens facility, F-21000, Dijon, France
| | - Niyazi Acar
- Centre des Sciences du Goût et de l'Alimentation, CNRS, INRAE, Institut Agro, Université de Bourgogne, F-21000, Dijon, France
| | - Marie-Agnès Bringer
- Centre des Sciences du Goût et de l'Alimentation, CNRS, INRAE, Institut Agro, Université de Bourgogne, F-21000, Dijon, France.
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5
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Tie Y, Huang Y, Chen R, Li L, Chen M, Zhang S. Current insights on the roles of gut microbiota in inflammatory bowel disease-associated extra-intestinal manifestations: pathophysiology and therapeutic targets. Gut Microbes 2023; 15:2265028. [PMID: 37822139 PMCID: PMC10572083 DOI: 10.1080/19490976.2023.2265028] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/15/2023] [Accepted: 09/26/2023] [Indexed: 10/13/2023] Open
Abstract
Inflammatory bowel disease (IBD) is a chronic, recurrent inflammatory disease of the gastrointestinal tract. In addition to digestive symptoms, patients with IBD may also develop extra-intestinal manifestations (EIMs), the etiology of which remains undefined. The gut microbiota has been reported to exert a critical role in the pathogenesis of IBD, with a similar pattern of gut dysbiosis observed between patients with IBD and those with EIMs. Therefore, it is hypothesized that the gut microbiota is also involved in the pathogenesis of EIMs. The potential mechanisms are presented in this review, including: 1) impaired gut barrier: dysbiosis induces pore formation in the intestinal epithelium, and activates pattern recognition receptors to promote local inflammation; 2) microbial translocation: intestinal pathogens, antigens, and toxins translocate via the impaired gut barrier into extra-intestinal sites; 3) molecular mimicry: certain microbial antigens share similar epitopes with self-antigens, inducing inflammatory responses targeting extra-intestinal tissues; 4) microbiota-related metabolites: dysbiosis results in the dysregulation of microbiota-related metabolites, which could modulate the differentiation of lymphocytes and cytokine production; 5) immunocytes and cytokines: immunocytes are over-activated and pro-inflammatory cytokines are excessively released. Additionally, we summarize microbiota-related therapies, including probiotics, prebiotics, postbiotics, antibiotics, and fecal microbiota transplantation, to promote better clinical management of IBD-associated EIMs.
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Affiliation(s)
- Yizhe Tie
- Department of Gastroenterology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Yongle Huang
- Department of Gastroenterology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
- Department of Clinical Medicine, Zhongshan School of Medicine, Sun Yat-Sen University, Guangzhou, China
| | - Rirong Chen
- Department of Gastroenterology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Li Li
- Department of Gastroenterology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Minhu Chen
- Department of Gastroenterology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Shenghong Zhang
- Department of Gastroenterology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
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Janetos TM, Zakaria N, Goldstein DA. The Microbiome and Uveitis: A Narrative Review. THE AMERICAN JOURNAL OF PATHOLOGY 2023; 193:1638-1647. [PMID: 37024044 DOI: 10.1016/j.ajpath.2023.03.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/04/2022] [Revised: 03/11/2023] [Accepted: 03/22/2023] [Indexed: 04/07/2023]
Abstract
The human intestinal microbiome is composed of hundreds of species and has recently been recognized as an important source of immune homeostasis. While dysbiosis, an altered microbiome from the normal core microbiome, has been associated with both intestinal and extraintestinal autoimmune disorders, including uveitis, causality has been difficult to establish. There are four proposed mechanisms of how the gut microbiome may influence the development of uveitis: molecular mimicry, imbalance of regulatory and effector T cells, increased intestinal permeability, and loss of intestinal metabolites. This review summarizes current literature on both animal and human studies that establish the link between dysbiosis and the development of uveitis, as well as provides evidence for the above mechanisms. Current studies provide valuable mechanistic insights as well as identify potential therapeutic targets. However, study limitations and the wide variability in the intestinal microbiome among populations and diseases make a specific targeted therapy difficult to establish. Further longitudinal clinical studies are required to identify any potential therapeutic that targets the intestinal microbiome.
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Affiliation(s)
- Timothy M Janetos
- Department of Ophthalmology, Northwestern University Feinberg School of Medicine, Chicago, Illinois.
| | - Nancy Zakaria
- Department of Ophthalmology, Northwestern University Feinberg School of Medicine, Chicago, Illinois; Department of Ophthalmology, Faculty of Medicine, Alexandria University, Alexandria, Arab Republic of Egypt
| | - Debra A Goldstein
- Department of Ophthalmology, Northwestern University Feinberg School of Medicine, Chicago, Illinois
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7
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Yu M, Hu S, Tang B, Yang H, Sun D. Engineering Escherichia coli Nissle 1917 as a microbial chassis for therapeutic and industrial applications. Biotechnol Adv 2023; 67:108202. [PMID: 37343690 DOI: 10.1016/j.biotechadv.2023.108202] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2022] [Revised: 05/19/2023] [Accepted: 06/17/2023] [Indexed: 06/23/2023]
Abstract
Genetically engineered microbes, especially Escherichia coli, have been widely used in the biosynthesis of proteins and metabolites for medical and industrial applications. As a traditional probiotic with a well-established safety record, E. coli Nissle 1917 (EcN) has recently emerged as a microbial chassis for generating living therapeutics, drug delivery vehicles, and microbial platforms for industrial production. Despite the availability of genetic tools for engineering laboratory E. coli K-12 and B strains, new genetic engineering systems are still greatly needed to expand the application range of EcN. In this review, we have summarized the latest progress in the development of genetic engineering systems in EcN, as well as their applications in the biosynthesis and delivery of valuable small molecules and biomacromolecules of medical and/or industrial interest, followed by a glimpse of how this rapidly growing field will evolve in the future.
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Affiliation(s)
- Mingjing Yu
- College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou, Zhejiang 310014, China
| | - Shilong Hu
- College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou, Zhejiang 310014, China
| | - Biao Tang
- Institute of Quality and Standard for Agro-products, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, Zhejiang, China
| | - Hua Yang
- Institute of Quality and Standard for Agro-products, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, Zhejiang, China
| | - Dongchang Sun
- College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou, Zhejiang 310014, China.
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Campagnoli LIM, Varesi A, Barbieri A, Marchesi N, Pascale A. Targeting the Gut-Eye Axis: An Emerging Strategy to Face Ocular Diseases. Int J Mol Sci 2023; 24:13338. [PMID: 37686143 PMCID: PMC10488056 DOI: 10.3390/ijms241713338] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2023] [Revised: 08/20/2023] [Accepted: 08/26/2023] [Indexed: 09/10/2023] Open
Abstract
The human microbiota refers to a large variety of microorganisms (bacteria, viruses, and fungi) that live in different human body sites, including the gut, oral cavity, skin, and eyes. In particular, the presence of an ocular surface microbiota with a crucial role in maintaining ocular surface homeostasis by preventing colonization from pathogen species has been recently demonstrated. Moreover, recent studies underline a potential association between gut microbiota (GM) and ocular health. In this respect, some evidence supports the existence of a gut-eye axis involved in the pathogenesis of several ocular diseases, including age-related macular degeneration, uveitis, diabetic retinopathy, dry eye, and glaucoma. Therefore, understanding the link between the GM and these ocular disorders might be useful for the development of new therapeutic approaches, such as probiotics, prebiotics, symbiotics, or faecal microbiota transplantation through which the GM could be modulated, thus allowing better management of these diseases.
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Affiliation(s)
| | - Angelica Varesi
- Department of Biology and Biotechnology, University of Pavia, 27100 Pavia, Italy;
| | - Annalisa Barbieri
- Department of Drug Sciences, Unit of Pharmacology, University of Pavia, 27100 Pavia, Italy; (A.B.); (N.M.)
| | - Nicoletta Marchesi
- Department of Drug Sciences, Unit of Pharmacology, University of Pavia, 27100 Pavia, Italy; (A.B.); (N.M.)
| | - Alessia Pascale
- Department of Drug Sciences, Unit of Pharmacology, University of Pavia, 27100 Pavia, Italy; (A.B.); (N.M.)
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Prednisone acetate modulates Th1/Th2 and Th17/Treg cell homeostasis in experimental autoimmune uveitis via orchestrating the Notch signaling pathway. Int Immunopharmacol 2023; 116:109809. [PMID: 36753985 DOI: 10.1016/j.intimp.2023.109809] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2022] [Revised: 01/26/2023] [Accepted: 01/27/2023] [Indexed: 02/09/2023]
Abstract
Uveitis is an immune eye disease that can seriously impair vision. Glucocorticoids (GCS) have been extensively used to treat uveitis, though the mechanisms have not been fully elucidated. In this study, we investigated the regulatory effects of prednisone acetate (PA) on the Th1/Th2 and Th17/Treg balance in experimental autoimmune uveitis (EAU) through modulating the Notch signaling pathway. Briefly, Lewis rats were randomly divided into the normal control (NC), EAU, and EAU + PA groups. Rats in EAU and EAU + PA groups were induced EAU, while those in the EAU + PA group were treated with PA. Clinical and histopathological scores were employed to assess the progression of EAU. The expression levels of Notch signaling-related molecules (Notch1, Notch2, Dll3, Dll4, and Rbpj) and Th-associated cytokines (IFN-γ, IL-4, IL-10, and IL-17) were assessed via quantitative PCR (qPCR) and enzyme-linked immunosorbent assay (ELISA). In addition, the frequencies of Th1, Th2, Th17 and Treg cells were detected by flow cytometry. These experimental results indicated that activation of the Notch signaling pathway occurred in EAU rats and resulted in a severe imbalance of the Th17/Treg and Th1/Th2 ratios. PA treatment significantly alleviated ocular inflammation, inhibited activation of the Notch signaling pathway, and declined Th1, and Th17 cell differentiation, thereby restoring the Th1/Th2 and Th17/Treg balance. Collectively, PA can positively enhance the systemic immune response and improve the intraocular microenvironmental homeostasis by inhibiting activation of the Notch signaling pathway and by restoring Th1/Th2 and Th17/Treg balance, thus achieving the goal of treating uveitis.
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Zhou H, Astore C, Skolnick J. PHEVIR: an artificial intelligence algorithm that predicts the molecular role of pathogens in complex human diseases. Sci Rep 2022; 12:20889. [PMID: 36463386 PMCID: PMC9719543 DOI: 10.1038/s41598-022-25412-x] [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: 09/15/2022] [Accepted: 11/29/2022] [Indexed: 12/04/2022] Open
Abstract
Infectious diseases are known to cause a wide variety of post-infection complications. However, it's been challenging to identify which diseases are most associated with a given pathogen infection. Using the recently developed LeMeDISCO approach that predicts comorbid diseases associated with a given set of putative mode of action (MOA) proteins and pathogen-human protein interactomes, we developed PHEVIR, an algorithm which predicts the corresponding human disease comorbidities of 312 viruses and 57 bacteria. These predictions provide an understanding of the molecular bases of complications and means of identifying appropriate drug targets to treat them. As an illustration of its power, PHEVIR is applied to identify putative driver pathogens and corresponding human MOA proteins for Type 2 diabetes, atherosclerosis, Alzheimer's disease, and inflammatory bowel disease. Additionally, we explore the origins of the oncogenicity/oncolyticity of certain pathogens and the relationship between heart disease and influenza. The full PHEVIR database is available at https://sites.gatech.edu/cssb/phevir/ .
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Affiliation(s)
- Hongyi Zhou
- grid.213917.f0000 0001 2097 4943Center for the Study of Systems Biology, School of Biological Sciences, Georgia Institute of Technology, 950 Atlantic Drive, N.W., Atlanta, GA 30332 USA
| | - Courtney Astore
- grid.213917.f0000 0001 2097 4943Center for the Study of Systems Biology, School of Biological Sciences, Georgia Institute of Technology, 950 Atlantic Drive, N.W., Atlanta, GA 30332 USA
| | - Jeffrey Skolnick
- grid.213917.f0000 0001 2097 4943Center for the Study of Systems Biology, School of Biological Sciences, Georgia Institute of Technology, 950 Atlantic Drive, N.W., Atlanta, GA 30332 USA
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Rodríguez-Fernández CA, Iglesias MB, de Domingo B, Conde-Pérez K, Vallejo JA, Rodríguez-Martínez L, González-Barcia M, Llorenç V, Mondelo-Garcia C, Poza M, Fernández-Ferreiro A. Microbiome in Immune-Mediated Uveitis. Int J Mol Sci 2022; 23:ijms23137020. [PMID: 35806031 PMCID: PMC9266430 DOI: 10.3390/ijms23137020] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2022] [Revised: 06/21/2022] [Accepted: 06/22/2022] [Indexed: 02/04/2023] Open
Abstract
In the last decades, personalized medicine has been increasing its presence in different fields of medicine, including ophthalmology. A new factor that can help us direct medicine towards the challenge of personalized treatments is the microbiome. The gut microbiome plays an important role in controlling immune response, and dysbiosis has been associated with immune-mediated diseases such as non-infectious uveitis (NIU). In this review, we gather the published evidence, both in the pre-clinical and clinical studies, that support the possible role of intestinal dysbiosis in the pathogenesis of NIU, as well as the modulation of the gut microbiota as a new possible therapeutic target. We describe the different mechanisms that have been proposed to involve dysbiosis in the causality of NIU, as well as the potential pharmacological tools that could be used to modify the microbiome (dietary supplementation, antibiotics, fecal microbiota transplantation, immunomodulators, or biologic drugs) and, consequently, in the control of the NIU. Furthermore, there is increasing scientific evidence suggesting that the treatment with anti-TNF not only restores the composition of the gut microbiota but also that the study of the composition of the gut microbiome will help predict the response of each patient to anti-TNF treatment.
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Affiliation(s)
| | - Manuel Busto Iglesias
- Pharmacy Department, University Clinical Hospital of Santiago de Compostela (SERGAS), 15706 Santiago de Compostela, Spain; (M.B.I.); (M.G.-B.); (C.M.-G.)
- Pharmacology Group, Health Research Institute of Santiago de Compostela (FIDIS), 15706 Santiago de Compostela, Spain;
| | - Begoña de Domingo
- Ophthalmology Department, University Clinical Hospital of Santiago Compostela (SERGAS), 15706 Santiago de Compostela, Spain;
| | - Kelly Conde-Pérez
- Microbiology Research Group: meiGAbiome, Biomedical Research Institute (INIBIC), Center for Advanced Research (CICA), University of A Coruña (UDC), CIBER of Infectious Diseases (CIBERINF), 15006 A Coruña, Spain; (K.C.-P.); (J.A.V.)
| | - Juan A. Vallejo
- Microbiology Research Group: meiGAbiome, Biomedical Research Institute (INIBIC), Center for Advanced Research (CICA), University of A Coruña (UDC), CIBER of Infectious Diseases (CIBERINF), 15006 A Coruña, Spain; (K.C.-P.); (J.A.V.)
| | - Lorena Rodríguez-Martínez
- Pharmacology Group, Health Research Institute of Santiago de Compostela (FIDIS), 15706 Santiago de Compostela, Spain;
| | - Miguel González-Barcia
- Pharmacy Department, University Clinical Hospital of Santiago de Compostela (SERGAS), 15706 Santiago de Compostela, Spain; (M.B.I.); (M.G.-B.); (C.M.-G.)
- Pharmacology Group, Health Research Institute of Santiago de Compostela (FIDIS), 15706 Santiago de Compostela, Spain;
| | - Victor Llorenç
- Clínic Institute of Ophthalmology (ICOF), Clinic Hospital of Barcelona, 08028 Barcelona, Spain;
- Biomedical Research Institute August Pi i Sunyer (IDIBAPS), Clínic Hospital of Barcelona, 08036 Barcelona, Spain
| | - Cristina Mondelo-Garcia
- Pharmacy Department, University Clinical Hospital of Santiago de Compostela (SERGAS), 15706 Santiago de Compostela, Spain; (M.B.I.); (M.G.-B.); (C.M.-G.)
- Pharmacology Group, Health Research Institute of Santiago de Compostela (FIDIS), 15706 Santiago de Compostela, Spain;
| | - Margarita Poza
- Microbiology Research Group: meiGAbiome, Biomedical Research Institute (INIBIC), Center for Advanced Research (CICA), University of A Coruña (UDC), CIBER of Infectious Diseases (CIBERINF), 15006 A Coruña, Spain; (K.C.-P.); (J.A.V.)
- Correspondence: (M.P.); (A.F.-F.)
| | - Anxo Fernández-Ferreiro
- Pharmacy Department, University Clinical Hospital of Santiago de Compostela (SERGAS), 15706 Santiago de Compostela, Spain; (M.B.I.); (M.G.-B.); (C.M.-G.)
- Pharmacology Group, Health Research Institute of Santiago de Compostela (FIDIS), 15706 Santiago de Compostela, Spain;
- Correspondence: (M.P.); (A.F.-F.)
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Brichová M, Svozílková P, Klímová A, Dušek O, Kverka M, Heissigerová J. MICROBIOME AND UVEITIDES. A REVIEW. CESKA A SLOVENSKA OFTALMOLOGIE : CASOPIS CESKE OFTALMOLOGICKE SPOLECNOSTI A SLOVENSKE OFTALMOLOGICKE SPOLECNOSTI 2022; 78:47-52. [PMID: 35105146 DOI: 10.31348/2021/30] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Microorganisms inhabiting all surfaces of mucous membranes and skin and forming a complex ecosystem with the host is called microbiota. The term microbiome is used for the aggregate genome of microbiota. The microbiota plays important role in the mechanisms of number of physiological and pathological processes, especially of the hosts immune system. The origin and course of autoimmune diseases not only of the digestive tract, but also of the distant organs, including the eye, are significantly influenced by intestinal microbiota. The role of microbiota and its changes (dysbiosis) in the etiopathogenesis of uveitis has so far been studied mainly in experimental models. Reduction of severity of non-infectious intraocular inflammation in germ-free mice or in conventional mice treated with broad-spectrum antibiotics was observed in both the induced experimental autoimmune uveitis model (EAU) and the spontaneous R161H model. Studies have confirmed that autoreactive T cell activation occurs in the intestinal wall in the absence of retinal antigen. Recent experiments focused on the effect of probiotic administration on the composition of intestinal microbiota and on the course of autoimmune uveitis. Our study group demonstrated significant prophylactic effect of the administration of the probiotic Escherichia coli Nissle 1917 on the intensity of inflammation in EAU. To date, only a few studies have been published investigating intestinal dysbiosis in patients with uveitis (e.g., in Behcets disease or Vogt-Koyanagi-Harada syndrome). The results of preclinical studies will be presumably used in clinical practice, mainly in the sense of prophylaxis and therapy, such as change in the lifestyle, diet and especially the therapeutic use of probiotics or the transfer of faecal microbiota.
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Bringer MA, Gabrielle PH, Bron AM, Creuzot-Garcher C, Acar N. The gut microbiota in retinal diseases. Exp Eye Res 2021; 214:108867. [PMID: 34856206 DOI: 10.1016/j.exer.2021.108867] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2021] [Revised: 10/25/2021] [Accepted: 11/23/2021] [Indexed: 02/06/2023]
Abstract
The gut microbiota is a complex ecosystem that inhabits the gastrointestinal tract and consists of archaea, fungi, viruses, and bacteria, with bacteria being dominant. From birth onwards, it coevolves dynamically together with the host. The composition of the gut microbiota is under the influence of a complex interplay between both host and environmental factors. Scientific advances in the past few decades have shown that it is essential in maintaining homeostasis and tipping the balance between health and disease. In addition to its role in food digestion, the gut microbiota is implicated in regulating multiple physiological processes in the host gut mucosa and in distant organs such as the brain. Persistent imbalance between gut microbial communities, termed "dysbiosis," has been associated with several inflammatory and metabolic diseases as well as with central nervous system disorders. In this review, we present the state of the art of current knowledge on an emerging concept, the microbiota-retina axis, and the potential role of its disturbance in the development of retinopathies. We also describe several microbiota-targeting strategies that could constitute preventive and therapeutic tools for retinopathies.
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Affiliation(s)
- Marie-Agnès Bringer
- Eye and Nutrition Research Group, Centre des Sciences du Goût et de l'Alimentation, AgroSup Dijon, CNRS, INRAE, Université Bourgogne Franche-Comté, F-21000, Dijon, France.
| | - Pierre-Henry Gabrielle
- Eye and Nutrition Research Group, Centre des Sciences du Goût et de l'Alimentation, AgroSup Dijon, CNRS, INRAE, Université Bourgogne Franche-Comté, F-21000, Dijon, France; Ophthalmology Department, University Hospital, F-21000, Dijon, France
| | - Alain M Bron
- Eye and Nutrition Research Group, Centre des Sciences du Goût et de l'Alimentation, AgroSup Dijon, CNRS, INRAE, Université Bourgogne Franche-Comté, F-21000, Dijon, France; Ophthalmology Department, University Hospital, F-21000, Dijon, France
| | - Catherine Creuzot-Garcher
- Eye and Nutrition Research Group, Centre des Sciences du Goût et de l'Alimentation, AgroSup Dijon, CNRS, INRAE, Université Bourgogne Franche-Comté, F-21000, Dijon, France; Ophthalmology Department, University Hospital, F-21000, Dijon, France
| | - Niyazi Acar
- Eye and Nutrition Research Group, Centre des Sciences du Goût et de l'Alimentation, AgroSup Dijon, CNRS, INRAE, Université Bourgogne Franche-Comté, F-21000, Dijon, France
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A Role for Folate in Microbiome-Linked Control of Autoimmunity. J Immunol Res 2021; 2021:9998200. [PMID: 34104654 PMCID: PMC8159645 DOI: 10.1155/2021/9998200] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2021] [Accepted: 05/04/2021] [Indexed: 02/03/2023] Open
Abstract
The microbiome exerts considerable control over immune homeostasis and influences susceptibility to autoimmune and autoinflammatory disease (AD/AID) such as inflammatory bowel disease (IBD), multiple sclerosis (MS), type 1 diabetes (T1D), psoriasis, and uveitis. In part, this is due to direct effects of the microbiome on gastrointestinal (GI) physiology and nutrient transport, but also to indirect effects on immunoregulatory controls, including induction and stabilization of T regulatory cells (T reg). Secreted bacterial metabolites such as short-chain fatty acids (SCFA) are under intense investigation as mediators of these effects. In contrast, folate (vitamin B9), an essential micronutrient, has attracted less attention, possibly because it exerts global physiological effects which are difficult to differentiate from specific effects on the immune system. Here, we review the role of folate in AD/AID with some emphasis on sight-threatening autoimmune uveitis. Since folate is required for the generation and maintenance of T reg , we propose that one mechanism for microbiome-based control of AD/AID is via folate-dependent induction of GI tract T reg , particularly colonic T reg, via anergic T cells (T an). Hence, folate supplementation has potential prophylactic and/or therapeutic benefit in AID/AD.
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