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Labetoulle M, Baudouin C, Benitez Del Castillo JM, Rolando M, Rescigno M, Messmer EM, Aragona P. How gut microbiota may impact ocular surface homeostasis and related disorders. Prog Retin Eye Res 2024; 100:101250. [PMID: 38460758 DOI: 10.1016/j.preteyeres.2024.101250] [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: 10/06/2023] [Revised: 03/01/2024] [Accepted: 03/04/2024] [Indexed: 03/11/2024]
Abstract
Changes in the bacterial flora in the gut, also described as gut microbiota, are readily acknowledged to be associated with several systemic diseases, especially those with an inflammatory, neuronal, psychological or hormonal factor involved in the pathogenesis and/or the perception of the disease. Maintaining ocular surface homeostasis is also based on all these four factors, and there is accumulating evidence in the literature on the relationship between gut microbiota and ocular surface diseases. The mechanisms involved are mostly interconnected due to the interaction of central and peripheral neuronal networks, inflammatory effectors and the hormonal system. A better understanding of the influence of the gut microbiota on the maintenance of ocular surface homeostasis, and on the onset or persistence of ocular surface disorders could bring new insights and help elucidate the epidemiology and pathology of ocular surface dynamics in health and disease. Revealing the exact nature of these associations could be of paramount importance for developing a holistic approach using highly promising new therapeutic strategies targeting ocular surface diseases.
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Affiliation(s)
- Marc Labetoulle
- Ophthalmology Départment, Hopital Bicetre, APHP, Université Paris-Saclay, IDMIT Infrastructure, Fontenay-aux-Roses Cedex, France; Hôpital National de la Vision des Quinze, Vingts, IHU ForeSight, Paris Saclay University, Paris, France.
| | - Christophe Baudouin
- Hôpital National de la Vision des Quinze, Vingts, IHU ForeSight, Paris Saclay University, Paris, France
| | - Jose M Benitez Del Castillo
- Departamento de Oftalmología, Hospital Clínico San Carlos, Clínica Rementeria, Instituto Investigaciones Oftalmologicas Ramon Castroviejo, Universidad Complutense, Madrid, Spain
| | - Maurizio Rolando
- Ocular Surface and Dry Eye Center, ISPRE Ophthalmics, Genoa, Italy
| | - Maria Rescigno
- IRCCS Humanitas Research Hospital, via Manzoni 56, Rozzano, 20089, Milan, Italy; Department of Biomedical Sciences, Humanitas University, Via Rita Levi Montalcini, Pieve Emanuele, 20090, MI, Italy
| | | | - Pasquale Aragona
- Department of Biomedical Sciences, Ophthalmology Clinic, University of Messina, Messina, Italy
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2
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Rinaldi F, Giuliani G, Pinto D. Importance of preserving the resident microflora of the skin to improve immunological response. J Investig Med 2021; 69:1386-1387. [PMID: 33972384 PMCID: PMC8485132 DOI: 10.1136/jim-2021-001823] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/20/2021] [Indexed: 11/13/2022]
Affiliation(s)
- Fabio Rinaldi
- Human Microbiome Advanced Project (HMAP), Giuliani, Milan, Italy
| | | | - Daniela Pinto
- Human Microbiome Advanced Project (HMAP), Giuliani, Milan, Italy
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3
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Impact of outdoor nature-related activities on gut microbiota, fecal serotonin, and perceived stress in preschool children: the Play&Grow randomized controlled trial. Sci Rep 2020; 10:21993. [PMID: 33319792 PMCID: PMC7738543 DOI: 10.1038/s41598-020-78642-2] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2020] [Accepted: 11/26/2020] [Indexed: 12/16/2022] Open
Abstract
Due to rapid urbanization, children today have fewer opportunities to interact with nature and this may result in a greater risk for developing stress and depression. Outdoor nature-related activities can enhance general well-being. However, the underlying mechanisms are not fully delineated. Here we recruited 54 preschool children to participate in a 10-week structured nature-related “Play&Grow” program. Following the intervention, children were assessed for connectedness to nature and perceived stress levels using validated questionnaires. Moreover, fecal serotonin level and gut microbiota profiles were measured by ELISA and 16S rDNA amplicon sequencing, respectively. Children were significantly more connected to nature after the intervention. Their gut microbiota altered, especially by modulating the abundance of Roseburia and the fecal-serotonin level. Moreover, we also observed a reduction in the overall perceived stress, particularly in the frequency of anger among these children. This study is the first to demonstrate the impact of nature-related activities on gut microbiota, fecal serotonin and psychosocial behaviour of preschool children. However, further mechanistic studies are needed to confirm the functional role of gut microbiota in the association between connectedness to nature and improved psychosocial behavior.
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Muñoz M, Guerrero-Araya E, Cortés-Tapia C, Plaza-Garrido A, Lawley TD, Paredes-Sabja D. Comprehensive genome analyses of Sellimonas intestinalis, a potential biomarker of homeostasis gut recovery. Microb Genom 2020; 6:mgen000476. [PMID: 33206037 PMCID: PMC8116674 DOI: 10.1099/mgen.0.000476] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2020] [Accepted: 10/29/2020] [Indexed: 12/16/2022] Open
Abstract
Sellimonas intestinalis is a Gram-positive and anaerobic bacterial species previously considered as uncultivable. Although little is known about this Lachnospiraceae family member, its increased abundance has been reported in patients who have recovered from intestinal homeostasis after dysbiosis events. In this context, the aim of the present study was to take advantage of a massive in vitro culture protocol that allowed the recovery of extremely oxygen-sensitive species from faecal samples, which led to isolation of S. intestinalis. Whole genome analyses of 11 S. intestinalis genomes revealed that this species has a highly conserved genome with 99.7 % 16S rRNA gene sequence similarity, average nucleotide polymorphism results >95, and 50.1 % of its coding potential being part of the core genome. Despite this, the variable portion of its genome was informative enough to reveal the existence of three lineages (lineage-I including isolates from Chile and France, lineage-II from South Korea and Finland, and lineage-III from China and one isolate from the USA) and evidence of some recombination signals. The identification of a cluster of orthologous groups revealed a high number of genes involved in metabolism, including amino acid and carbohydrate transport as well as energy production and conversion, which matches with the metabolic profile previously reported for microbiota from healthy individuals. Additionally, virulence factors and antimicrobial resistance genes were found (mainly in lineage-III), which could favour their survival during antibiotic-induced dysbiosis. These findings provide the basis of knowledge about the potential of S. intestinalis as a bioindicator of intestinal homeostasis recovery and contribute to advancing the characterization of gut microbiota members with beneficial potential.
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Affiliation(s)
- Marina Muñoz
- Microbiota–Host Interactions and Clostridia Research Group, Departamento de Ciencias Biológicas, Facultad de Ciencias de la Vida, Universidad Andrés Bello, Santiago, Chile
- ANID – Millennium Science Initiative Program – Millennium Nucleus in the Biology of the Intestinal Microbiota, Santiago, Chile
| | - Enzo Guerrero-Araya
- Microbiota–Host Interactions and Clostridia Research Group, Departamento de Ciencias Biológicas, Facultad de Ciencias de la Vida, Universidad Andrés Bello, Santiago, Chile
- ANID – Millennium Science Initiative Program – Millennium Nucleus in the Biology of the Intestinal Microbiota, Santiago, Chile
| | - Catalina Cortés-Tapia
- Microbiota–Host Interactions and Clostridia Research Group, Departamento de Ciencias Biológicas, Facultad de Ciencias de la Vida, Universidad Andrés Bello, Santiago, Chile
- ANID – Millennium Science Initiative Program – Millennium Nucleus in the Biology of the Intestinal Microbiota, Santiago, Chile
| | - Angela Plaza-Garrido
- Microbiota–Host Interactions and Clostridia Research Group, Departamento de Ciencias Biológicas, Facultad de Ciencias de la Vida, Universidad Andrés Bello, Santiago, Chile
- ANID – Millennium Science Initiative Program – Millennium Nucleus in the Biology of the Intestinal Microbiota, Santiago, Chile
| | - Trevor D. Lawley
- Host–Microbiota Interactions Laboratory, Wellcome Trust Sanger Institute, Wellcome Genome Campus, Hinxton, UK
| | - Daniel Paredes-Sabja
- Microbiota–Host Interactions and Clostridia Research Group, Departamento de Ciencias Biológicas, Facultad de Ciencias de la Vida, Universidad Andrés Bello, Santiago, Chile
- ANID – Millennium Science Initiative Program – Millennium Nucleus in the Biology of the Intestinal Microbiota, Santiago, Chile
- Department of Biology, Texas A&M University, College Station, TX, 77843, USA
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Amadei SS, Notario V. A Significant Question in Cancer Risk and Therapy: Are Antibiotics Positive or Negative Effectors? Current Answers and Possible Alternatives. Antibiotics (Basel) 2020; 9:E580. [PMID: 32899961 PMCID: PMC7558931 DOI: 10.3390/antibiotics9090580] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2020] [Revised: 08/26/2020] [Accepted: 08/31/2020] [Indexed: 12/12/2022] Open
Abstract
Cancer is predominantly considered as an environmental disease caused by genetic or epigenetic alterations induced by exposure to extrinsic (e.g., carcinogens, pollutants, radiation) or intrinsic (e.g., metabolic, immune or genetic deficiencies). Over-exposure to antibiotics, which is favored by unregulated access as well as inappropriate prescriptions by physicians, is known to have led to serious health problems such as the rise of antibiotic resistance, in particular in poorly developed countries. In this review, the attention is focused on evaluating the effects of antibiotic exposure on cancer risk and on the outcome of cancer therapeutic protocols, either directly acting as extrinsic promoters, or indirectly, through interactions with the human gut microbiota. The preponderant evidence derived from information reported over the last 10 years confirms that antibiotic exposure tends to increase cancer risk and, unfortunately, that it reduces the efficacy of various forms of cancer therapy (e.g., chemo-, radio-, and immunotherapy alone or in combination). Alternatives to the current patterns of antibiotic use, such as introducing new antibiotics, bacteriophages or enzybiotics, and implementing dysbiosis-reducing microbiota modulatory strategies in oncology, are discussed. The information is in the end considered from the perspective of the most recent findings on the tumor-specific and intracellular location of the tumor microbiota, and of the most recent theories proposed to explain cancer etiology on the notion of regression of the eukaryotic cells and systems to stages characterized for a lack of coordination among their components of prokaryotic origin, which is promoted by injuries caused by environmental insults.
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Affiliation(s)
| | - Vicente Notario
- Department of Radiation Medicine, Lombardi Comprehensive Cancer Center, Georgetown University Medical Center, Washington, DC 20057, USA;
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Schuh NW, Carrier TJ, Schrankel CS, Reitzel AM, Heyland A, Rast JP. Bacterial Exposure Mediates Developmental Plasticity and Resistance to Lethal Vibrio lentus Infection in Purple Sea Urchin (Strongylocentrotus purpuratus) Larvae. Front Immunol 2020; 10:3014. [PMID: 31993052 PMCID: PMC6971090 DOI: 10.3389/fimmu.2019.03014] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2019] [Accepted: 12/09/2019] [Indexed: 12/27/2022] Open
Abstract
Exposure to and colonization by bacteria during development have wide-ranging beneficial effects on animal biology but can also inhibit growth or cause disease. The immune system is the prime mediator of these microbial interactions and is itself shaped by them. Studies using diverse animal taxa have begun to elucidate the mechanisms underlying the acquisition and transmission of bacterial symbionts and their interactions with developing immune systems. Moreover, the contexts of these associations are often confounded by stark differences between "wild type" microbiota and the bacterial communities associated with animals raised in conventional or germ-free laboratories. In this study, we investigate the spatio-temporal kinetics of bacterial colonization and associated effects on growth and immune function in larvae of the purple sea urchin (Strongylocentrotus purpuratus) as a model for host-microbe interactions and immune system development. We also compare the host-associated microbiota of developing embryos and larvae raised in natural seawater or exposed to adult-associated bacteria in the laboratory. Bacteria associated with zygotes, embryos, and early larvae are detectable with 16S amplicon sequencing, but 16S-FISH indicates that the vast majority of larval bacterial load is acquired after feeding begins and is localized to the gut lumen. The bacterial communities of laboratory-cultured embryos are significantly less diverse than the natural microbiota but recapitulate its major components (Alphaproteobacteria, Gammaproteobacteria, and Bacteroidetes), suggesting that biologically relevant host-microbe interactions can be studied in the laboratory. We also demonstrate that bacterial exposure in early development induces changes in morphology and in the immune system. In the absence of bacteria, larvae grow larger at the 4-arm stage. Additionally, bacteria-exposed larvae are significantly more resistant to lethal infection with the larva-associated pathogen Vibrio lentus suggesting that early exposure to high levels of microbes, as would be expected in natural conditions, affects the immune state in later larvae. These results expand our knowledge of microbial influences on early sea urchin development and establish a model in which to study the interactions between the developing larval immune system and the acquisition of larval microbiota.
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Affiliation(s)
- Nicholas W Schuh
- Department of Medical Biophysics, University of Toronto, Toronto, ON, Canada.,Department of Biological Sciences, Sunnybrook Research Institute, Toronto, ON, Canada.,Department of Integrative Biology, University of Guelph, Guelph, ON, Canada
| | - Tyler J Carrier
- Department of Biological Sciences, University of North Carolina at Charlotte, Charlotte, NC, United States
| | - Catherine S Schrankel
- Department of Biological Sciences, Sunnybrook Research Institute, Toronto, ON, Canada.,Department of Immunology, University of Toronto, Toronto, ON, Canada.,Marine Biology Research Division, Scripps Institute of Oceanography, University of California, San Diego, San Diego, CA, United States
| | - Adam M Reitzel
- Department of Biological Sciences, University of North Carolina at Charlotte, Charlotte, NC, United States
| | - Andreas Heyland
- Department of Integrative Biology, University of Guelph, Guelph, ON, Canada
| | - Jonathan P Rast
- Department of Medical Biophysics, University of Toronto, Toronto, ON, Canada.,Department of Biological Sciences, Sunnybrook Research Institute, Toronto, ON, Canada.,Department of Immunology, University of Toronto, Toronto, ON, Canada.,Department of Pathology and Laboratory Medicine, Emory University School of Medicine, Atlanta, GA, United States.,Emory Vaccine Center, Emory University, Atlanta, GA, United States
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Oral Microbiota Composition and Antimicrobial Antibody Response in Patients with Recurrent Aphthous Stomatitis. Microorganisms 2019; 7:microorganisms7120636. [PMID: 31805744 PMCID: PMC6955784 DOI: 10.3390/microorganisms7120636] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2019] [Revised: 11/21/2019] [Accepted: 11/26/2019] [Indexed: 02/06/2023] Open
Abstract
Recurrent aphthous stomatitis (RAS) is the most common disease of the oral mucosa, and it has been recently associated with bacterial and fungal dysbiosis. To study this link further, we investigated microbial shifts during RAS manifestation at an ulcer site, in its surroundings, and at an unaffected site, compared with healed mucosa in RAS patients and healthy controls. We sampled microbes from five distinct sites in the oral cavity. The one site with the most pronounced differences in microbial alpha and beta diversity between RAS patients and healthy controls was the lower labial mucosa. Detailed analysis of this particular oral site revealed strict association of the genus Selenomonas with healed mucosa of RAS patients, whereas the class Clostridia and genera Lachnoanaerobaculum, Cardiobacterium, Leptotrichia, and Fusobacterium were associated with the presence of an active ulcer. Furthermore, active ulcers were dominated by Malassezia, which were negatively correlated with Streptococcus and Haemophilus and positively correlated with Porphyromonas species. In addition, RAS patients showed increased serum levels of IgG against Mogibacterium timidum compared with healthy controls. Our study demonstrates that the composition of bacteria and fungi colonizing healthy oral mucosa is changed in active RAS ulcers, and that this alteration persists to some extent even after the ulcer is healed.
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Catinean A, Neag MA, Mitre AO, Bocsan CI, Buzoianu AD. Microbiota and Immune-Mediated Skin Diseases-An Overview. Microorganisms 2019; 7:microorganisms7090279. [PMID: 31438634 PMCID: PMC6781142 DOI: 10.3390/microorganisms7090279] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2019] [Revised: 08/15/2019] [Accepted: 08/20/2019] [Indexed: 12/16/2022] Open
Abstract
In recent years, increased attention has been paid to the relationship between microbiota and various diseases, especially immune-mediated diseases. Because conventional therapy for many autoimmune diseases is limited both in efficacy and safety, there is an increased interest in identifying nutraceuticals, particularly probiotics, able to modulate the microbiota and ameliorate these diseases. In this review, we analyzed the research focused on the role of gut microbiota and skin in immunity, their role in immune-mediated skin diseases (IMSDs), and the beneficial effect of probiotics in patients with this pathology. We selected articles published between 2009 and 2019 in PubMed and ScienceDirect that provided information regarding microbiota, IMSDs and the role of probiotics in these diseases. We included results from different types of studies including observational and interventional clinical trials or in vivo and in vitro experimental studies. Our results showed that probiotics have a beneficial effect in changing the microbiota of patients with IMSDs; they also influence disease progression. Further studies are needed to better understand the impact of new therapies on intestinal microbiota. It is also important to determine whether the microbiota of patients with autoimmune diseases can be manipulated in order to restore homeostasis of the microbiota.
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Affiliation(s)
- Adrian Catinean
- Department of Internal Medicine, Iuliu Hatieganu University of Medicine and Pharmacy, 400337 Cluj-Napoca, Romania
| | - Maria Adriana Neag
- Pharmacology, Toxicology and Clinical Pharmacology Department, Iuliu Hatieganu University of Medicine and Pharmacy, 400337 Cluj-Napoca, Romania.
| | - Andrei Otto Mitre
- Faculty of Medicine, Iuliu Hatieganu University of Medicine and Pharmacy, 400337 Cluj-Napoca, Romania
| | - Corina Ioana Bocsan
- Pharmacology, Toxicology and Clinical Pharmacology Department, Iuliu Hatieganu University of Medicine and Pharmacy, 400337 Cluj-Napoca, Romania
| | - Anca Dana Buzoianu
- Pharmacology, Toxicology and Clinical Pharmacology Department, Iuliu Hatieganu University of Medicine and Pharmacy, 400337 Cluj-Napoca, Romania
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Peng Q, Chang H, Wang R, You Z, Jiang S, Ma C, Huo D, Zhu X, Zhang J. Potassium sorbate suppresses intestinal microbial activity and triggers immune regulation in zebrafish (Danio rerio). Food Funct 2019; 10:7164-7173. [DOI: 10.1039/c9fo01237k] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Potassium sorbate (PS) is a class of bacteriostatic antiseptic agent widely used in the food industry; the effects of its intake on host health are currently unclear.
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Affiliation(s)
- Qiannan Peng
- College of Food Science and Engineering
- School of Life and Pharmaceutical Science
- Hainan University
- Haikou 570228
- P. R. China
| | - Haibo Chang
- College of Food Science and Engineering
- School of Life and Pharmaceutical Science
- Hainan University
- Haikou 570228
- P. R. China
| | - Rui Wang
- College of Food Science and Engineering
- School of Life and Pharmaceutical Science
- Hainan University
- Haikou 570228
- P. R. China
| | - Zhengkai You
- College of Food Science and Engineering
- School of Life and Pharmaceutical Science
- Hainan University
- Haikou 570228
- P. R. China
| | - Shuaiming Jiang
- College of Food Science and Engineering
- School of Life and Pharmaceutical Science
- Hainan University
- Haikou 570228
- P. R. China
| | - Chenchen Ma
- College of Food Science and Engineering
- School of Life and Pharmaceutical Science
- Hainan University
- Haikou 570228
- P. R. China
| | - Dongxue Huo
- College of Food Science and Engineering
- School of Life and Pharmaceutical Science
- Hainan University
- Haikou 570228
- P. R. China
| | - Xiaopeng Zhu
- Key Laboratory of Tropical Biological Resources
- Ministry of Education
- Hainan University
- Haikou 570228
- P. R. China
| | - Jiachao Zhang
- College of Food Science and Engineering
- School of Life and Pharmaceutical Science
- Hainan University
- Haikou 570228
- P. R. China
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