1
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Wadhwa A, Moreno-Villanueva M, Crucian B, Wu H. Synergistic interplay between radiation and microgravity in spaceflight-related immunological health risks. Immun Ageing 2024; 21:50. [PMID: 39033285 PMCID: PMC11264846 DOI: 10.1186/s12979-024-00449-w] [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: 10/30/2023] [Accepted: 06/21/2024] [Indexed: 07/23/2024]
Abstract
Spaceflight poses a myriad of environmental stressors to astronauts´ physiology including microgravity and radiation. The individual impacts of microgravity and radiation on the immune system have been extensively investigated, though a comprehensive review on their combined effects on immune system outcomes is missing. Therefore, this review aims at understanding the synergistic, additive, and antagonistic interactions between microgravity and radiation and their impact on immune function as observed during spaceflight-analog studies such as rodent hindlimb unloading and cell culture rotating wall vessel models. These mimic some, but not all, of the physiological changes observed in astronauts during spaceflight and provide valuable information that should be considered when planning future missions. We provide guidelines for the design of further spaceflight-analog studies, incorporating influential factors such as age and sex for rodent models and standardizing the longitudinal evaluation of specific immunological alterations for both rodent and cellular models of spaceflight exposure.
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Affiliation(s)
- Anna Wadhwa
- Harvard Medical School, Boston, MA, 02115, USA.
- NASA Johnson Space Center, Houston, TX, 77058, USA.
| | | | | | - Honglu Wu
- NASA Johnson Space Center, Houston, TX, 77058, USA
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2
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De Giani A, Perillo F, Baeri A, Finazzi M, Facciotti F, Di Gennaro P. Positive modulation of a new reconstructed human gut microbiota by Maitake extract helpfully boosts the intestinal environment in vitro. PLoS One 2024; 19:e0301822. [PMID: 38603764 PMCID: PMC11008829 DOI: 10.1371/journal.pone.0301822] [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: 08/22/2023] [Accepted: 03/19/2024] [Indexed: 04/13/2024] Open
Abstract
The human gut is a complex environment where the microbiota and its metabolites play a crucial role in the maintenance of a healthy state. The aim of the present work is the reconstruction of a new in vitro minimal human gut microbiota resembling the microbe-microbe networking comprising the principal phyla (Bacillota, Bacteroidota, Pseudomonadota, and Actinomycetota), to comprehend the intestinal ecosystem complexity. In the reductionist model, we mimicked the administration of Maitake extract as prebiotic and a probiotic formulation (three strains belonging to Lactobacillus and Bifidobacterium genera), evaluating the modulation of strain levels, the release of beneficial metabolites, and their health-promoting effects on human cell lines of the intestinal environment. The administration of Maitake and the selected probiotic strains generated a positive modulation of the in vitro bacterial community by qPCR analyses, evidencing the prominence of beneficial strains (Lactiplantibacillus plantarum and Bifidobacterium animalis subsp. lactis) after 48 hours. The bacterial community growths were associated with the production of metabolites over time through GC-MSD analyses such as lactate, butyrate, and propionate. Their effects on the host were evaluated on cell lines of the intestinal epithelium and the immune system, evidencing positive antioxidant (upregulation of SOD1 and NQO1 genes in HT-29 cell line) and anti-inflammatory effects (production of IL-10 from all the PBMCs). Therefore, the results highlighted a positive modulation induced by the synergic activities of probiotics and Maitake, inducing a tolerogenic microenvironment.
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Affiliation(s)
- Alessandra De Giani
- Department of Biotechnology and Biosciences, University of Milano-Bicocca, Milano, Italy
| | - Federica Perillo
- Department of Experimental Oncology, European Institute of Oncology, Milan, Italy
| | - Alberto Baeri
- Department of Biotechnology and Biosciences, University of Milano-Bicocca, Milano, Italy
| | - Margherita Finazzi
- Department of Biotechnology and Biosciences, University of Milano-Bicocca, Milano, Italy
| | - Federica Facciotti
- Department of Biotechnology and Biosciences, University of Milano-Bicocca, Milano, Italy
| | - Patrizia Di Gennaro
- Department of Biotechnology and Biosciences, University of Milano-Bicocca, Milano, Italy
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3
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Siddiqui R, Qaisar R, Al-Dahash K, Altelly AH, Elmoselhi AB, Khan NA. Cardiovascular changes under the microgravity environment and the gut microbiome. LIFE SCIENCES IN SPACE RESEARCH 2024; 40:89-96. [PMID: 38245353 DOI: 10.1016/j.lssr.2023.09.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/22/2023] [Revised: 08/31/2023] [Accepted: 09/04/2023] [Indexed: 01/22/2024]
Abstract
In view of the critical role the gut microbiome plays in human health, it has become clear that astronauts' gut microbiota composition changes after spending time in space. Astronauts are exposed to several risks in space, including a protracted period of microgravity, radiation, and mechanical unloading of the body. Several deleterious effects of such an environment are reported, including orthostatic intolerance, cardiovascular endothelial dysfunction, cellular and molecular changes, and changes in the composition of the gut microbiome. Herein, the correlation between the gut microbiome and cardiovascular disease in a microgravity environment is evaluated. Additionally, the relationship between orthostatic hypotension, cardiac shrinkage and arrhythmias during spaceflight, and cellular alterations during spaceflight is reviewed. Given its impact on human health in general, modifying the gut microbiota may significantly promote astronaut health and performance. This is merited, given the prospect of augmented human activities in future space missions.
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Affiliation(s)
- Ruqaiyyah Siddiqui
- Microbiota Research Center, Istinye University, Istanbul 34010, Turkey; College of Arts and Sciences, American University of Sharjah, University City, Sharjah 26666, United Arab Emirates
| | - Rizwan Qaisar
- Basic Medical Sciences, College of Medicine, University of Sharjah, Sharjah 27272, United Arab Emirates; Cardiovascular Research Group, Research Institute of Medical and Health Sciences, University of Sharjah, Sharjah 27272, United Arab Emirates
| | - Khulood Al-Dahash
- Basic Medical Sciences, College of Medicine, University of Sharjah, Sharjah 27272, United Arab Emirates
| | - Ahmad Hashem Altelly
- Basic Medical Sciences, College of Medicine, University of Sharjah, Sharjah 27272, United Arab Emirates
| | - Adel B Elmoselhi
- Basic Medical Sciences, College of Medicine, University of Sharjah, Sharjah 27272, United Arab Emirates; Cardiovascular Research Group, Research Institute of Medical and Health Sciences, University of Sharjah, Sharjah 27272, United Arab Emirates
| | - Naveed Ahmed Khan
- Microbiota Research Center, Istinye University, Istanbul 34010, Turkey.
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4
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Pan C, Zhang Y, Yan J, Zhou Y, Wang S, Liu X, Zhang P, Yang H. Extreme environments and human health: From the immune microenvironments to immune cells. ENVIRONMENTAL RESEARCH 2023; 236:116800. [PMID: 37527745 DOI: 10.1016/j.envres.2023.116800] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/01/2023] [Revised: 07/20/2023] [Accepted: 07/29/2023] [Indexed: 08/03/2023]
Abstract
Exposure to extreme environments causes specific acute and chronic physiological responses in humans. The adaptation and the physiological processes under extreme environments predominantly affect multiple functional systems of the organism, in particular, the immune system. Dysfunction of the immune system affected by several extreme environments (including hyperbaric environment, hypoxia, blast shock, microgravity, hypergravity, radiation exposure, and magnetic environment) has been observed from clinical macroscopic symptoms to intracorporal immune microenvironments. Therefore, simulated extreme conditions are engineered for verifying the main influenced characteristics and factors in the immune microenvironments. This review summarizes the responses of immune microenvironments to these extreme environments during in vivo or in vitro exposure, and the approaches of engineering simulated extreme environments in recent decades. The related microenvironment engineering, signaling pathways, molecular mechanisms, clinical therapy, and prevention strategies are also discussed.
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Affiliation(s)
- Chengwei Pan
- School of Life Sciences, Northwestern Polytechnical University, Xi'an, Shaanxi, 710072, China; Engineering Research Center of Chinese Ministry of Education for Biological Diagnosis, Treatment and Protection Technology and Equipment, China; Research Center of Special Environmental Biomechanics & Medical Engineering, Northwestern Polytechnical University, Xi'an, Shaanxi, 710072, China
| | - Yuzhi Zhang
- School of Life Sciences, Northwestern Polytechnical University, Xi'an, Shaanxi, 710072, China; Engineering Research Center of Chinese Ministry of Education for Biological Diagnosis, Treatment and Protection Technology and Equipment, China; Research Center of Special Environmental Biomechanics & Medical Engineering, Northwestern Polytechnical University, Xi'an, Shaanxi, 710072, China
| | - Jinxiao Yan
- School of Life Sciences, Northwestern Polytechnical University, Xi'an, Shaanxi, 710072, China; Engineering Research Center of Chinese Ministry of Education for Biological Diagnosis, Treatment and Protection Technology and Equipment, China; Research Center of Special Environmental Biomechanics & Medical Engineering, Northwestern Polytechnical University, Xi'an, Shaanxi, 710072, China
| | - Yidan Zhou
- School of Life Sciences, Northwestern Polytechnical University, Xi'an, Shaanxi, 710072, China; Engineering Research Center of Chinese Ministry of Education for Biological Diagnosis, Treatment and Protection Technology and Equipment, China; Research Center of Special Environmental Biomechanics & Medical Engineering, Northwestern Polytechnical University, Xi'an, Shaanxi, 710072, China
| | - Sijie Wang
- School of Life Sciences, Northwestern Polytechnical University, Xi'an, Shaanxi, 710072, China; Engineering Research Center of Chinese Ministry of Education for Biological Diagnosis, Treatment and Protection Technology and Equipment, China; Research Center of Special Environmental Biomechanics & Medical Engineering, Northwestern Polytechnical University, Xi'an, Shaanxi, 710072, China
| | - Xiru Liu
- School of Life Sciences, Northwestern Polytechnical University, Xi'an, Shaanxi, 710072, China; Engineering Research Center of Chinese Ministry of Education for Biological Diagnosis, Treatment and Protection Technology and Equipment, China; Research Center of Special Environmental Biomechanics & Medical Engineering, Northwestern Polytechnical University, Xi'an, Shaanxi, 710072, China
| | - Pan Zhang
- School of Life Sciences, Northwestern Polytechnical University, Xi'an, Shaanxi, 710072, China; Research Center of Special Environmental Biomechanics & Medical Engineering, Northwestern Polytechnical University, Xi'an, Shaanxi, 710072, China; School of Food Science and Engineering, Shaanxi University of Science & Technology, 710021, China.
| | - Hui Yang
- School of Life Sciences, Northwestern Polytechnical University, Xi'an, Shaanxi, 710072, China; Engineering Research Center of Chinese Ministry of Education for Biological Diagnosis, Treatment and Protection Technology and Equipment, China; Research Center of Special Environmental Biomechanics & Medical Engineering, Northwestern Polytechnical University, Xi'an, Shaanxi, 710072, China.
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5
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Grigoryan EN. Impact of Microgravity and Other Spaceflight Factors on Retina of Vertebrates and Humans In Vivo and In Vitro. Life (Basel) 2023; 13:1263. [PMID: 37374046 DOI: 10.3390/life13061263] [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: 04/04/2023] [Revised: 05/20/2023] [Accepted: 05/25/2023] [Indexed: 06/29/2023] Open
Abstract
Spaceflight (SF) increases the risk of developmental, regenerative, and physiological disorders in animals and humans. Astronauts, besides bone loss, muscle atrophy, and cardiovascular and immune system alterations, undergo ocular disorders affecting posterior eye tissues, including the retina. Few studies revealed abnormalities in the development and changes in the regeneration of eye tissues in lower vertebrates after SF and simulated microgravity. Under microgravity conditions, mammals show disturbances in the retinal vascular system and increased risk of oxidative stress that can lead to cell death in the retina. Animal studies provided evidence of gene expression changes associated with cellular stress, inflammation, and aberrant signaling pathways. Experiments using retinal cells in microgravity-modeling systems in vitro additionally indicated micro-g-induced changes at the molecular level. Here, we provide an overview of the literature and the authors' own data to assess the predictive value of structural and functional alterations for developing countermeasures and mitigating the SF effects on the human retina. Further emphasis is given to the importance of animal studies on the retina and other eye tissues in vivo and retinal cells in vitro aboard spacecraft for understanding alterations in the vertebrate visual system in response to stress caused by gravity variations.
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Affiliation(s)
- Eleonora N Grigoryan
- Koltzov Institute of Developmental Biology, Russian Academy of Sciences, 119334 Moscow, Russia
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6
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Dubayle D, Vanden-Bossche A, Peixoto T, Morel JL. Hypergravity Increases Blood-Brain Barrier Permeability to Fluorescent Dextran and Antisense Oligonucleotide in Mice. Cells 2023; 12:cells12050734. [PMID: 36899870 PMCID: PMC10000817 DOI: 10.3390/cells12050734] [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: 01/26/2023] [Revised: 02/13/2023] [Accepted: 02/16/2023] [Indexed: 03/03/2023] Open
Abstract
The earliest effect of spaceflight is an alteration in vestibular function due to microgravity. Hypergravity exposure induced by centrifugation is also able to provoke motion sickness. The blood-brain barrier (BBB) is the crucial interface between the vascular system and the brain to ensure efficient neuronal activity. We developed experimental protocols of hypergravity on C57Bl/6JRJ mice to induce motion sickness and reveal its effects on the BBB. Mice were centrifuged at 2× g for 24 h. Fluorescent dextrans with different sizes (40, 70 and 150 kDa) and fluorescent antisense oligonucleotides (AS) were injected into mice retro-orbitally. The presence of fluorescent molecules was revealed by epifluorescence and confocal microscopies in brain slices. Gene expression was evaluated by RT-qPCR from brain extracts. Only the 70 kDa dextran and AS were detected in the parenchyma of several brain regions, suggesting an alteration in the BBB. Moreover, Ctnnd1, Gja4 and Actn1 were upregulated, whereas Jup, Tjp2, Gja1, Actn2, Actn4, Cdh2 and Ocln genes were downregulated, specifically suggesting a dysregulation in the tight junctions of endothelial cells forming the BBB. Our results confirm the alteration in the BBB after a short period of hypergravity exposure.
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Affiliation(s)
- David Dubayle
- CNRS, INCC, UMR 8002, Université Paris Cité, F-75006 Paris, France
- Correspondence: (D.D.); (J.-L.M.)
| | - Arnaud Vanden-Bossche
- INSERM, SAINBIOSE U1059, Mines Saint-Etienne, Université Jean Monnet Saint-Étienne, F-42023 Saint-Étienne, France
| | - Tom Peixoto
- University Bordeaux, CNRS, INCIA, UMR 5287, F-33000 Bordeaux, France
| | - Jean-Luc Morel
- University Bordeaux, CNRS, INCIA, UMR 5287, F-33000 Bordeaux, France
- University Bordeaux, CNRS, IMN, UMR 5293, F-33000 Bordeaux, France
- Correspondence: (D.D.); (J.-L.M.)
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7
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Theotokis P, Manthou ME, Deftereou TE, Miliaras D, Meditskou S. Addressing Spaceflight Biology through the Lens of a Histologist-Embryologist. Life (Basel) 2023; 13:life13020588. [PMID: 36836946 PMCID: PMC9965490 DOI: 10.3390/life13020588] [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: 11/28/2022] [Revised: 02/09/2023] [Accepted: 02/14/2023] [Indexed: 02/23/2023] Open
Abstract
Embryogenesis and fetal development are highly delicate and error-prone processes in their core physiology, let alone if stress-associated factors and conditions are involved. Space radiation and altered gravity are factors that could radically affect fertility and pregnancy and compromise a physiological organogenesis. Unfortunately, there is a dearth of information examining the effects of cosmic exposures on reproductive and proliferating outcomes with regard to mammalian embryonic development. However, explicit attention has been given to investigations exploring discrete structures and neural networks such as the vestibular system, an entity that is viewed as the sixth sense and organically controls gravity beginning with the prenatal period. The role of the gut microbiome, a newly acknowledged field of research in the space community, is also being challenged to be added in forthcoming experimental protocols. This review discusses the data that have surfaced from simulations or actual space expeditions and addresses developmental adaptations at the histological level induced by an extraterrestrial milieu.
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Affiliation(s)
- Paschalis Theotokis
- Laboratory of Histology and Embryology, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
| | - Maria Eleni Manthou
- Laboratory of Histology and Embryology, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
| | | | - Dimosthenis Miliaras
- Laboratory of Histology and Embryology, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
| | - Soultana Meditskou
- Laboratory of Histology and Embryology, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
- Correspondence:
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8
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Gravity and the Gut: A Hypothesis of Irritable Bowel Syndrome. Am J Gastroenterol 2022; 117:1933-1947. [PMID: 36455220 PMCID: PMC9722391 DOI: 10.14309/ajg.0000000000002066] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/19/2022] [Accepted: 09/02/2022] [Indexed: 12/04/2022]
Abstract
The pathogenesis of irritable bowel syndrome (IBS)-a disorder of gut-brain interaction that affects up to 10% of the world's population-remains uncertain. It is puzzling that a disorder so prevalent and archetypal among humans can be explained by disparate theories, respond to treatments with vastly different mechanisms of action, and present with a dazzling array of comorbidities. It is reasonable to question whether there is a unifying factor that binds these divergent theories and observations, and if so, what that factor might be. This article offers a testable hypothesis that seeks to accommodate the manifold theories, clinical symptoms, somatic comorbidities, neuropsychological features, and treatment outcomes of IBS by describing the syndrome in relation to a principal force of human evolution: gravity. In short, the hypothesis proposed here is that IBS may result from ineffective anatomical, physiological, and neuropsychological gravity management systems designed to optimize gastrointestinal form and function, protect somatic and visceral integrity, and maximize survival in a gravity-bound world. To explain this unconventional hypothesis of IBS pathogenesis, referred to herein as the gravity hypothesis, this article reviews the influence of gravity on human evolution; discusses how Homo sapiens imperfectly evolved to manage this universal force of attraction; and explores the mechanical, microbial, and neuropsychological consequences of gravity intolerance with a focus on explaining IBS. This article concludes by considering the diagnostic and therapeutic implications of this new hypothesis and proposes experiments to support or reject this line of inquiry. It is hoped that the ideas in this thought experiment may also help encourage new or different ways of thinking about this common disorder.
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9
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Tesei D, Jewczynko A, Lynch AM, Urbaniak C. Understanding the Complexities and Changes of the Astronaut Microbiome for Successful Long-Duration Space Missions. Life (Basel) 2022; 12:life12040495. [PMID: 35454986 PMCID: PMC9031868 DOI: 10.3390/life12040495] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2022] [Revised: 03/17/2022] [Accepted: 03/24/2022] [Indexed: 12/12/2022] Open
Abstract
During space missions, astronauts are faced with a variety of challenges that are unique to spaceflight and that have been known to cause physiological changes in humans over a period of time. Several of these changes occur at the microbiome level, a complex ensemble of microbial communities residing in various anatomic sites of the human body, with a pivotal role in regulating the health and behavior of the host. The microbiome is essential for day-to-day physiological activities, and alterations in microbiome composition and function have been linked to various human diseases. For these reasons, understanding the impact of spaceflight and space conditions on the microbiome of astronauts is important to assess significant health risks that can emerge during long-term missions and to develop countermeasures. Here, we review various conditions that are caused by long-term space exploration and discuss the role of the microbiome in promoting or ameliorating these conditions, as well as space-related factors that impact microbiome composition. The topics explored pertain to microgravity, radiation, immunity, bone health, cognitive function, gender differences and pharmacomicrobiomics. Connections are made between the trifecta of spaceflight, the host and the microbiome, and the significance of these interactions for successful long-term space missions.
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Affiliation(s)
- Donatella Tesei
- Department of Biotechnology, University of Natural Resources and Life Sciences, 1190 Vienna, Austria;
| | - Anna Jewczynko
- Department of Biology, University of Waterloo, Waterloo, ON N2L 3G1, Canada;
| | - Anne M. Lynch
- Department of Pulmonary Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA;
- Graduate Program in Developmental Biology, Baylor College of Medicine, Houston, TX 77030, USA
| | - Camilla Urbaniak
- ZIN Technologies Inc., Middleburg Heights, OH 44130, USA
- NASA Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109, USA
- Correspondence:
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10
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Deane CS, da Silveira WA, Herranz R. Space omics research in Europe: Contributions, geographical distribution and ESA member state funding schemes. iScience 2022; 25:103920. [PMID: 35265808 PMCID: PMC8898910 DOI: 10.1016/j.isci.2022.103920] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
The European research community, via European Space Agency (ESA) spaceflight opportunities, has significantly contributed toward our current understanding of spaceflight biology. Recent molecular biology experiments include "omic" analysis, which provides a holistic and systems level understanding of the mechanisms underlying phenotypic adaptation. Despite vast interest in, and the immense quantity of biological information gained from space omics research, the knowledge of ESA-related space omics works as a collective remains poorly defined due to the recent exponential application of omics approaches in space and the limited search capabilities of pre-existing records. Thus, a review of such contributions is necessary to clarify and promote the development of space omics among ESA and ESA state members. To address this gap, in this review, we i) identified and summarized omics works led by European researchers, ii) geographically described these omics works, and iii) highlighted potential caveats in complex funding scenarios among ESA member states.
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Affiliation(s)
- Colleen S Deane
- Department of Sport and Health Science, College of Life and Environmental Sciences, University of Exeter, Exeter EX1 2LU, UK.,Living Systems Institute, University of Exeter, Stocker Road, Exeter EX4 4QD, UK
| | | | - Willian A da Silveira
- Department of Applied Biomedical Science, Faculty of Health Sciences, University of Malta, Msida MSD, 2080, Malta
| | - Raúl Herranz
- Centro de Investigaciones Biológicas Margarita Salas (CSIC), 28040 Madrid, Spain
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11
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Strigari L, Strolin S, Morganti AG, Bartoloni A. Dose-Effects Models for Space Radiobiology: An Overview on Dose-Effect Relationships. Front Public Health 2021; 9:733337. [PMID: 34820349 PMCID: PMC8606590 DOI: 10.3389/fpubh.2021.733337] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2021] [Accepted: 09/27/2021] [Indexed: 12/20/2022] Open
Abstract
Space radiobiology is an interdisciplinary science that examines the biological effects of ionizing radiation on humans involved in aerospace missions. The dose-effect models are one of the relevant topics of space radiobiology. Their knowledge is crucial for optimizing radioprotection strategies (e.g., spaceship and lunar space station-shielding and lunar/Mars village design), the risk assessment of the health hazard related to human space exploration, and reducing damages induced to astronauts from galactic cosmic radiation. Dose-effect relationships describe the observed damages to normal tissues or cancer induction during and after space flights. They are developed for the various dose ranges and radiation qualities characterizing the actual and the forecast space missions [International Space Station (ISS) and solar system exploration]. Based on a Pubmed search including 53 papers reporting the collected dose-effect relationships after space missions or in ground simulations, 7 significant dose-effect relationships (e.g., eye flashes, cataract, central nervous systems, cardiovascular disease, cancer, chromosomal aberrations, and biomarkers) have been identified. For each considered effect, the absorbed dose thresholds and the uncertainties/limitations of the developed relationships are summarized and discussed. The current knowledge on this topic can benefit from further in vitro and in vivo radiobiological studies, an accurate characterization of the quality of space radiation, and the numerous experimental dose-effects data derived from the experience in the clinical use of ionizing radiation for diagnostic or treatments with doses similar to those foreseen for the future space missions. The growing number of pooled studies could improve the prediction ability of dose-effect relationships for space exposure and reduce their uncertainty level. Novel research in the field is of paramount importance to reduce damages to astronauts from cosmic radiation before Beyond Low Earth Orbit exploration in the next future. The study aims at providing an overview of the published dose-effect relationships and illustrates novel perspectives to inspire future research.
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Affiliation(s)
- Lidia Strigari
- Department of Medical Physics, Istituto di Ricovero e Cura a Carattere Scientifico (IRCCS) Azienda Ospedaliero-Universitaria di Bologna, Bologna, Italy
| | - Silvia Strolin
- Department of Medical Physics, Istituto di Ricovero e Cura a Carattere Scientifico (IRCCS) Azienda Ospedaliero-Universitaria di Bologna, Bologna, Italy
| | - Alessio Giuseppe Morganti
- Radiation Oncology Center, School of Medicine, Department of Experimental, Diagnostic and Specialty Medicine - DIMES, University of Bologna, Bologna, Italy
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12
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Sgro M, Kodila ZN, Brady RD, Reichelt AC, Mychaisuk R, Yamakawa GR. Synchronizing Our Clocks as We Age: The Influence of the Brain-Gut-Immune Axis on the Sleep-Wake Cycle Across the Lifespan. Sleep 2021; 45:6425072. [PMID: 34757429 DOI: 10.1093/sleep/zsab268] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2021] [Revised: 10/11/2021] [Indexed: 11/12/2022] Open
Abstract
The microbes that colonize the small and large intestines, known as the gut microbiome, play an integral role in optimal brain development and function. The gut microbiome is a vital component of the bi-directional communication pathway between the brain, immune system, and gut, also known as the brain-gut-immune axis. To date there has been minimal investigation into the implications of improper development of the gut microbiome and the brain-gut-immune axis on the sleep-wake cycle, particularly during sensitive periods of physical and neurological development, such as childhood, adolescence, and senescence. Therefore, this review will explore the current literature surrounding the overlapping developmental periods of the gut microbiome, brain, and immune system from birth through to senescence, while highlighting how the brain-gut-immune axis affects maturation and organisation of the sleep-wake cycle. We also examine how dysfunction to either the microbiome or the sleep-wake cycle negatively affects the bidirectional relationship between the brain and gut, and subsequently the overall health and functionality of this complex system. Additionally, this review integrates therapeutic studies to demonstrate when dietary manipulations, such as supplementation with probiotics and prebiotics, can modulate the gut microbiome to enhance health of the brain-gut-immune axis and optimize our sleep-wake cycle.
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Affiliation(s)
- Marissa Sgro
- Department of Neuroscience, Central Clinical School, Monash University, Melbourne, VIC, Australia
| | - Zoe N Kodila
- Department of Neuroscience, Central Clinical School, Monash University, Melbourne, VIC, Australia
| | - Rhys D Brady
- Department of Neuroscience, Central Clinical School, Monash University, Melbourne, VIC, Australia
| | - Amy C Reichelt
- Department of Medical Sciences, Adelaide Medical School, The University of Adelaide, Adelaide, Australia
| | - Richelle Mychaisuk
- Department of Neuroscience, Central Clinical School, Monash University, Melbourne, VIC, Australia
| | - Glenn R Yamakawa
- Department of Neuroscience, Central Clinical School, Monash University, Melbourne, VIC, Australia
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13
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Mhatre SD, Iyer J, Puukila S, Paul AM, Tahimic CGT, Rubinstein L, Lowe M, Alwood JS, Sowa MB, Bhattacharya S, Globus RK, Ronca AE. Neuro-consequences of the spaceflight environment. Neurosci Biobehav Rev 2021; 132:908-935. [PMID: 34767877 DOI: 10.1016/j.neubiorev.2021.09.055] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2020] [Revised: 08/03/2021] [Accepted: 09/28/2021] [Indexed: 12/17/2022]
Abstract
As human space exploration advances to establish a permanent presence beyond the Low Earth Orbit (LEO) with NASA's Artemis mission, researchers are striving to understand and address the health challenges of living and working in the spaceflight environment. Exposure to ionizing radiation, microgravity, isolation and other spaceflight hazards pose significant risks to astronauts. Determining neurobiological and neurobehavioral responses, understanding physiological responses under Central Nervous System (CNS) control, and identifying putative mechanisms to inform countermeasure development are critically important to ensuring brain and behavioral health of crew on long duration missions. Here we provide a detailed and comprehensive review of the effects of spaceflight and of ground-based spaceflight analogs, including simulated weightlessness, social isolation, and ionizing radiation on humans and animals. Further, we discuss dietary and non-dietary countermeasures including artificial gravity and antioxidants, among others. Significant future work is needed to ensure that neural, sensorimotor, cognitive and other physiological functions are maintained during extended deep space missions to avoid potentially catastrophic health and safety outcomes.
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Affiliation(s)
- Siddhita D Mhatre
- Space Biosciences Division, NASA Ames Research Center, Moffett Field, CA, 94035, USA; KBR, Houston, TX, 77002, USA; COSMIAC Research Center, University of New Mexico, Albuquerque, NM, 87131, USA
| | - Janani Iyer
- Space Biosciences Division, NASA Ames Research Center, Moffett Field, CA, 94035, USA; Universities Space Research Association, Columbia, MD, 21046, USA
| | - Stephanie Puukila
- Space Biosciences Division, NASA Ames Research Center, Moffett Field, CA, 94035, USA; Universities Space Research Association, Columbia, MD, 21046, USA; Flinders University, Adelaide, Australia
| | - Amber M Paul
- Space Biosciences Division, NASA Ames Research Center, Moffett Field, CA, 94035, USA; Universities Space Research Association, Columbia, MD, 21046, USA
| | - Candice G T Tahimic
- Space Biosciences Division, NASA Ames Research Center, Moffett Field, CA, 94035, USA; KBR, Houston, TX, 77002, USA; Department of Biology, University of North Florida, Jacksonville, FL, 32224, USA
| | - Linda Rubinstein
- Space Biosciences Division, NASA Ames Research Center, Moffett Field, CA, 94035, USA; Universities Space Research Association, Columbia, MD, 21046, USA
| | - Moniece Lowe
- Space Biosciences Division, NASA Ames Research Center, Moffett Field, CA, 94035, USA; Blue Marble Space Institute of Science, Seattle, WA, 98154, USA
| | - Joshua S Alwood
- Space Biosciences Division, NASA Ames Research Center, Moffett Field, CA, 94035, USA
| | - Marianne B Sowa
- Space Biosciences Division, NASA Ames Research Center, Moffett Field, CA, 94035, USA
| | - Sharmila Bhattacharya
- Space Biosciences Division, NASA Ames Research Center, Moffett Field, CA, 94035, USA
| | - Ruth K Globus
- Space Biosciences Division, NASA Ames Research Center, Moffett Field, CA, 94035, USA
| | - April E Ronca
- Space Biosciences Division, NASA Ames Research Center, Moffett Field, CA, 94035, USA; Wake Forest Medical School, Winston-Salem, NC, 27101, USA.
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14
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Chamarande J, Cunat L, Caillet C, Mathieu L, Duval JFL, Lozniewski A, Frippiat JP, Alauzet C, Cailliez-Grimal C. Surface Properties of Parabacteroides distasonis and Impacts of Stress-Induced Molecules on Its Surface Adhesion and Biofilm Formation Capacities. Microorganisms 2021; 9:1602. [PMID: 34442682 PMCID: PMC8400631 DOI: 10.3390/microorganisms9081602] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2021] [Revised: 07/22/2021] [Accepted: 07/26/2021] [Indexed: 12/11/2022] Open
Abstract
The gut microbiota is a complex and dynamic ecosystem whose balance and homeostasis are essential to the host's well-being and whose composition can be critically affected by various factors, including host stress. Parabacteroides distasonis causes well-known beneficial roles for its host, but is negatively impacted by stress. However, the mechanisms explaining its maintenance in the gut have not yet been explored, in particular its capacities to adhere onto (bio)surfaces, form biofilms and the way its physicochemical surface properties are affected by stressing conditions. In this paper, we reported adhesion and biofilm formation capacities of 14 unrelated strains of P. distasonis using a steam-based washing procedure, and the electrokinetic features of its surface. Results evidenced an important inter-strain variability for all experiments including the response to stress hormones. In fact, stress-induced molecules significantly impact P. distasonis adhesion and biofilm formation capacities in 35% and 23% of assays, respectively. This study not only provides basic data on the adhesion and biofilm formation capacities of P. distasonis to abiotic substrates but also paves the way for further research on how stress-molecules could be implicated in P. distasonis maintenance within the gut microbiota, which is a prerequisite for designing efficient solutions to optimize its survival within gut environment.
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Affiliation(s)
- Jordan Chamarande
- SIMPA, Université de Lorraine, F-54000 Nancy, France; (J.C.); (L.C.); (A.L.); (J.-P.F.); (C.A.)
| | - Lisiane Cunat
- SIMPA, Université de Lorraine, F-54000 Nancy, France; (J.C.); (L.C.); (A.L.); (J.-P.F.); (C.A.)
| | - Céline Caillet
- CNRS, LIEC, Université de Lorraine, F-54000 Nancy, France; (C.C.); (J.F.L.D.)
| | - Laurence Mathieu
- Ecole Pratique des Hautes Etudes (EPHE), Laboratoire de Chimie Physique et Microbiologie pour les Matériaux et l’Environnement (LCPME), Paris Sciences Lettres University (PSL), F-54500 Nancy, France;
| | - Jérôme F. L. Duval
- CNRS, LIEC, Université de Lorraine, F-54000 Nancy, France; (C.C.); (J.F.L.D.)
| | - Alain Lozniewski
- SIMPA, Université de Lorraine, F-54000 Nancy, France; (J.C.); (L.C.); (A.L.); (J.-P.F.); (C.A.)
- CHRU de Nancy, Service de Microbiologie, F-54000 Nancy, France
| | - Jean-Pol Frippiat
- SIMPA, Université de Lorraine, F-54000 Nancy, France; (J.C.); (L.C.); (A.L.); (J.-P.F.); (C.A.)
| | - Corentine Alauzet
- SIMPA, Université de Lorraine, F-54000 Nancy, France; (J.C.); (L.C.); (A.L.); (J.-P.F.); (C.A.)
- CHRU de Nancy, Service de Microbiologie, F-54000 Nancy, France
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15
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Bonnefoy J, Ghislin S, Beyrend J, Coste F, Calcagno G, Lartaud I, Gauquelin-Koch G, Poussier S, Frippiat JP. Gravitational Experimental Platform for Animal Models, a New Platform at ESA's Terrestrial Facilities to Study the Effects of Micro- and Hypergravity on Aquatic and Rodent Animal Models. Int J Mol Sci 2021; 22:2961. [PMID: 33803957 PMCID: PMC7998548 DOI: 10.3390/ijms22062961] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2021] [Revised: 03/09/2021] [Accepted: 03/13/2021] [Indexed: 02/08/2023] Open
Abstract
Using rotors to expose animals to different levels of hypergravity is an efficient means of understanding how altered gravity affects physiological functions, interactions between physiological systems and animal development. Furthermore, rotors can be used to prepare space experiments, e.g., conducting hypergravity experiments to demonstrate the feasibility of a study before its implementation and to complement inflight experiments by comparing the effects of micro- and hypergravity. In this paper, we present a new platform called the Gravitational Experimental Platform for Animal Models (GEPAM), which has been part of European Space Agency (ESA)'s portfolio of ground-based facilities since 2020, to study the effects of altered gravity on aquatic animal models (amphibian embryos/tadpoles) and mice. This platform comprises rotors for hypergravity exposure (three aquatic rotors and one rodent rotor) and models to simulate microgravity (cages for mouse hindlimb unloading and a random positioning machine (RPM)). Four species of amphibians can be used at present. All murine strains can be used and are maintained in a specific pathogen-free area. This platform is surrounded by numerous facilities for sample preparation and analysis using state-of-the-art techniques. Finally, we illustrate how GEPAM can contribute to the understanding of molecular and cellular mechanisms and the identification of countermeasures.
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Affiliation(s)
- Julie Bonnefoy
- Stress, Immunity, Pathogens Laboratory, SIMPA, Université de Lorraine, F-54000 Nancy, France; (S.G.); (F.C.); (G.C.)
| | - Stéphanie Ghislin
- Stress, Immunity, Pathogens Laboratory, SIMPA, Université de Lorraine, F-54000 Nancy, France; (S.G.); (F.C.); (G.C.)
| | - Jérôme Beyrend
- Animalerie du Campus Biologie Santé, ACBS, Université de Lorraine, F-54000 Nancy, France; (J.B.); (I.L.); (S.P.)
| | - Florence Coste
- Stress, Immunity, Pathogens Laboratory, SIMPA, Université de Lorraine, F-54000 Nancy, France; (S.G.); (F.C.); (G.C.)
| | - Gaetano Calcagno
- Stress, Immunity, Pathogens Laboratory, SIMPA, Université de Lorraine, F-54000 Nancy, France; (S.G.); (F.C.); (G.C.)
| | - Isabelle Lartaud
- Animalerie du Campus Biologie Santé, ACBS, Université de Lorraine, F-54000 Nancy, France; (J.B.); (I.L.); (S.P.)
| | | | - Sylvain Poussier
- Animalerie du Campus Biologie Santé, ACBS, Université de Lorraine, F-54000 Nancy, France; (J.B.); (I.L.); (S.P.)
| | - Jean-Pol Frippiat
- Stress, Immunity, Pathogens Laboratory, SIMPA, Université de Lorraine, F-54000 Nancy, France; (S.G.); (F.C.); (G.C.)
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16
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Alauzet C, Cunat L, Wack M, Lanfumey L, Legrand-Frossi C, Lozniewski A, Agrinier N, Cailliez-Grimal C, Frippiat JP. Impact of a Model Used to Simulate Chronic Socio-Environmental Stressors Encountered during Spaceflight on Murine Intestinal Microbiota. Int J Mol Sci 2020; 21:ijms21217863. [PMID: 33114008 PMCID: PMC7672645 DOI: 10.3390/ijms21217863] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2020] [Revised: 10/14/2020] [Accepted: 10/21/2020] [Indexed: 12/27/2022] Open
Abstract
During deep-space travels, crewmembers face various physical and psychosocial stressors that could alter gut microbiota composition. Since it is well known that intestinal dysbiosis is involved in the onset or exacerbation of several disorders, the aim of this study was to evaluate changes in intestinal microbiota in a murine model used to mimic chronic psychosocial stressors encountered during a long-term space mission. We demonstrate that 3 weeks of exposure to this model (called CUMS for Chronic Unpredictable Mild Stress) induce significant change in intracaecal β-diversity characterized by an important increase of the Firmicutes/Bacteroidetes ratio. These alterations are associated with a decrease of Porphyromonadaceae, particularly of the genus Barnesiella, a major member of gut microbiota in mice and humans where it is described as having protective properties. These results raise the question of the impact of stress-induced decrease of beneficial taxa, support recent data deduced from in-flight experimentations and other ground-based models, and emphasize the critical need for further studies exploring the impact of spaceflight on intestinal microbiota in order to propose strategies to countermeasure spaceflight-associated dysbiosis and its consequences on health.
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Affiliation(s)
- Corentine Alauzet
- Stress Immunity Pathogens unit (SIMPA), EA 7300, Université de Lorraine, F-54000 Nancy, France; (L.C.); (C.L.-F.); (A.L.); (C.C.-G.); (J.-P.F.)
- CHRU-Nancy, Service de Microbiologie, F-54000 Nancy, France
- Correspondence: ; Tel.: +33-383-153-938
| | - Lisiane Cunat
- Stress Immunity Pathogens unit (SIMPA), EA 7300, Université de Lorraine, F-54000 Nancy, France; (L.C.); (C.L.-F.); (A.L.); (C.C.-G.); (J.-P.F.)
| | - Maxime Wack
- Département d’Informatique Médicale, Biostatistiques et Santé Publique, Hôpital Européen Georges Pompidou, Assistance Publique-Hôpitaux de Paris, 75015 Paris, France;
- Centre de Recherche des Cordeliers, INSERM, UMRS 1138, Université de Paris, 75006 Paris, France
| | - Laurence Lanfumey
- Institute of Psychiatry and Neuroscience of Paris (IPNP), INSERM U1266, Université de Paris, F-75014 Paris, France;
| | - Christine Legrand-Frossi
- Stress Immunity Pathogens unit (SIMPA), EA 7300, Université de Lorraine, F-54000 Nancy, France; (L.C.); (C.L.-F.); (A.L.); (C.C.-G.); (J.-P.F.)
| | - Alain Lozniewski
- Stress Immunity Pathogens unit (SIMPA), EA 7300, Université de Lorraine, F-54000 Nancy, France; (L.C.); (C.L.-F.); (A.L.); (C.C.-G.); (J.-P.F.)
- CHRU-Nancy, Service de Microbiologie, F-54000 Nancy, France
| | - Nelly Agrinier
- CHRU-Nancy, INSERM, Université de Lorraine, CIC, Epidémiologie Clinique, F-54000 Nancy, France;
| | - Catherine Cailliez-Grimal
- Stress Immunity Pathogens unit (SIMPA), EA 7300, Université de Lorraine, F-54000 Nancy, France; (L.C.); (C.L.-F.); (A.L.); (C.C.-G.); (J.-P.F.)
| | - Jean-Pol Frippiat
- Stress Immunity Pathogens unit (SIMPA), EA 7300, Université de Lorraine, F-54000 Nancy, France; (L.C.); (C.L.-F.); (A.L.); (C.C.-G.); (J.-P.F.)
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17
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Dubar M, Clerc-Urmès I, Baumann C, Clément C, Alauzet C, Bisson C. Relations of Psychosocial Factors and Cortisol with Periodontal and Bacterial Parameters: A Prospective Clinical Study in 30 Patients with Periodontitis Before and After Non-Surgical Treatment. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2020; 17:ijerph17207651. [PMID: 33092182 PMCID: PMC7588876 DOI: 10.3390/ijerph17207651] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/05/2020] [Revised: 10/15/2020] [Accepted: 10/16/2020] [Indexed: 12/18/2022]
Abstract
(1) Background: The progression of periodontitis, induced by polymicrobial dysbiosis, can be modified by systemic or environmental factors such as stress or anxiety affecting host response. The purpose of this study is to evaluate the potential associations between psychosocial factors scores or salivary cortisol levels with clinical periodontal parameters and bacterial environment in patients with periodontitis; (2) Methods: Subgingival microbiota was collected in two pathological and one healthy sites from thirty diseased patients (before/after scaling and root planing (SRP)) and from one healthy site from thirty control patients. Usual clinical periodontal parameters were recorded, and a saliva sample was harvested. Patients completed stress and anxiety self-assessment questionnaires. Cortisol concentrations were determined by ELISA and bacteria were identified by PCR; (3) Results: No correlation between salivary cortisol and the stress-anxiety self-declared was found (p > 0.05), but high concentrations of this molecule were associated positively and linearly with periodontal pocket depth (p = 0.04). It appeared that certain psychosocial stressors are associated with a modulation of the bacterial colonization of pockets of diseased group (before/after SRP), notably concerning Tannerella forsythia (p = 0.02), Porphyromonas gingivalis (p = 0.03), Fusobacterium nucleatum (p = 0.049) and Campylobacter rectus (p = 0.01). (4) Conclusion: This study reveals associations between bacteria colonization and psychosocial parameters in periodontitis that needs to be further investigated.
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Affiliation(s)
- Marie Dubar
- Department of Periodontology, School of Dentistry, Lille University Hospital, 59000 Lille, France
- Stress Immunity Pathogens Unit (SIMPA), EA 7300, University of Lorraine, F-54000 Nancy, France; (C.A.); (C.B.)
- Correspondence:
| | - Isabelle Clerc-Urmès
- Department of Methodology, Promotion and Investigation, UMDS, University Hospital of Nancy, 54500 Vandoeuvre-lès-Nancy, France; (I.C.-U.); (C.B.)
| | - Cédric Baumann
- Department of Methodology, Promotion and Investigation, UMDS, University Hospital of Nancy, 54500 Vandoeuvre-lès-Nancy, France; (I.C.-U.); (C.B.)
| | - Céline Clément
- CHRU Nancy, Department of Public Health Dentistry, University Hospital, 54000 Nancy, France;
- “Interpsy” Laboratory, University of Lorraine, EA 4432, CEDEX 54015 Nancy, France
- «Health Systemic Process» Laboratory, University Lyon 1, EA 4129, 69008 Lyon, France
| | - Corentine Alauzet
- Stress Immunity Pathogens Unit (SIMPA), EA 7300, University of Lorraine, F-54000 Nancy, France; (C.A.); (C.B.)
- CHRU Nancy, Microbiology Department, University Hospital, F-54000 Nancy, France
| | - Catherine Bisson
- Stress Immunity Pathogens Unit (SIMPA), EA 7300, University of Lorraine, F-54000 Nancy, France; (C.A.); (C.B.)
- Department of Periodontology, Nancy University Hospital, Lorraine University, 54500 Vandoeuvre-lès-Nancy, France
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