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Klos B, Steinbach C, Ketel J, Lambert C, Penders J, Doré J, Enck P, Mack I. Effects of isolation and confinement on gastrointestinal microbiota-a systematic review. Front Nutr 2023; 10:1214016. [PMID: 37492598 PMCID: PMC10364611 DOI: 10.3389/fnut.2023.1214016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2023] [Accepted: 06/21/2023] [Indexed: 07/27/2023] Open
Abstract
Purpose The gastrointestinal (GI) microbiota is a complex and dynamic ecosystem whose composition and function are influenced by many internal and external factors. Overall, the individual GI microbiota composition appears to be rather stable but can be influenced by extreme shifts in environmental exposures. To date, there is no systematic literature review that examines the effects of extreme environmental conditions, such as strict isolation and confinement, on the GI microbiota. Methods We conducted a systematic review to examine the effects of isolated and confined environments on the human GI microbiota. The literature search was conducted according to PRISMA criteria using PubMed, Web of Science and Cochrane Library. Relevant studies were identified based on exposure to isolated and confined environments, generally being also antigen-limited, for a minimum of 28 days and classified according to the microbiota analysis method (cultivation- or molecular based approaches) and the isolation habitat (space, space- or microgravity simulation such as MARS-500 or natural isolation such as Antarctica). Microbial shifts in abundance, alpha diversity and community structure in response to isolation were assessed. Results Regardless of the study habitat, inconsistent shifts in abundance of 40 different genera, mainly in the phylum Bacillota (formerly Firmicutes) were reported. Overall, the heterogeneity of studies was high. Reducing heterogeneity was neither possible by differentiating the microbiota analysis methods nor by subgrouping according to the isolation habitat. Alpha diversity evolved non-specifically, whereas the microbial community structure remained dissimilar despite partial convergence. The GI ecosystem returned to baseline levels following exposure, showing resilience irrespective of the experiment length. Conclusion An isolated and confined environment has a considerable impact on the GI microbiota composition in terms of diversity and relative abundances of dominant taxa. However, due to a limited number of studies with rather small sample sizes, it is important to approach an in-depth conclusion with caution, and results should be considered as a preliminary trend. The risk of dysbiosis and associated diseases should be considered when planning future projects in extreme environments. Systematic review registration https://www.crd.york.ac.uk/prospero/, identifier CRD42022357589.
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Affiliation(s)
- Bea Klos
- Department of Psychosomatic Medicine and Psychotherapy, University Hospital Tübingen, Tübingen, Germany
| | - Christina Steinbach
- Department of Psychosomatic Medicine and Psychotherapy, University Hospital Tübingen, Tübingen, Germany
| | - Jasmin Ketel
- Department of Psychosomatic Medicine and Psychotherapy, University Hospital Tübingen, Tübingen, Germany
| | - Claude Lambert
- CIRI–Immunology Lab University Hospital, Saint-Étienne, France
- LCOMS/ENOSIS Université de Lorraine, Metz, France
| | - John Penders
- Department of Medical Microbiology, Infectious Diseases and Infection Prevention, Maastricht University Medical Center, CAPHRI Care and Public Health Research Institute, Maastricht, Netherlands
- Department of Medical Microbiology, Infectious Diseases and Infection Prevention, Maastricht University Medical Center, School of Nutrition and Translational Research in Metabolism, Maastricht, Netherlands
| | - Joël Doré
- UMR Micalis Institut, INRA, Paris-Saclay University, Jouy-En-Josas, France
| | - Paul Enck
- Department of Psychosomatic Medicine and Psychotherapy, University Hospital Tübingen, Tübingen, Germany
| | - Isabelle Mack
- Department of Psychosomatic Medicine and Psychotherapy, University Hospital Tübingen, Tübingen, Germany
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Hao Z, Meng C, Li L, Feng S, Zhu Y, Yang J, Han L, Sun L, Lv W, Figeys D, Liu H. Positive mood-related gut microbiota in a long-term closed environment: a multiomics study based on the "Lunar Palace 365" experiment. Microbiome 2023; 11:88. [PMID: 37095530 PMCID: PMC10124008 DOI: 10.1186/s40168-023-01506-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/10/2022] [Accepted: 02/24/2023] [Indexed: 05/03/2023]
Abstract
BACKGROUND Psychological health risk is one of the most severe and complex risks in manned deep-space exploration and long-term closed environments. Recently, with the in-depth research of the microbiota-gut-brain axis, gut microbiota has been considered a new approach to maintain and improve psychological health. However, the correlation between gut microbiota and psychological changes inside long-term closed environments is still poorly understood. Herein, we used the "Lunar Palace 365" mission, a 1-year-long isolation study in the Lunar Palace 1 (a closed manned Bioregenerative Life Support System facility with excellent performance), to investigate the correlation between gut microbiota and psychological changes, in order to find some new potential psychobiotics to maintain and improve the psychological health of crew members. RESULTS We report some altered gut microbiota that were associated with psychological changes in the long-term closed environment. Four potential psychobiotics (Bacteroides uniformis, Roseburia inulinivorans, Eubacterium rectale, and Faecalibacterium prausnitzii) were identified. On the basis of metagenomic, metaproteomic, and metabolomic analyses, the four potential psychobiotics improved mood mainly through three pathways related to nervous system functions: first, by fermenting dietary fibers, they may produce short-chain fatty acids, such as butyric and propionic acids; second, they may regulate amino acid metabolism pathways of aspartic acid, glutamic acid, tryptophan, etc. (e.g., converting glutamic acid to gamma-aminobutyric acid; converting tryptophan to serotonin, kynurenic acid, or tryptamine); and third, they may regulate other pathways, such as taurine and cortisol metabolism. Furthermore, the results of animal experiments confirmed the positive regulatory effect and mechanism of these potential psychobiotics on mood. CONCLUSIONS These observations reveal that gut microbiota contributed to a robust effect on the maintenance and improvement of mental health in a long-term closed environment. Our findings represent a key step towards a better understanding the role of the gut microbiome in mammalian mental health during space flight and provide a basis for future efforts to develop microbiota-based countermeasures that mitigate risks to crew mental health during future long-term human space expeditions on the moon or Mars. This study also provides an essential reference for future applications of psychobiotics to neuropsychiatric treatments. Video Abstract.
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Affiliation(s)
- Zikai Hao
- Institute of Environmental Biology and Life Support Technology, School of Biological Science and Medical Engineering, Beihang University, Beijing, 100083, China.
- Key Laboratory of Molecular Medicine and Biotherapy, Ministry of Industry and Information Technology, School of Life Science, Beijing Institute of Technology, Beijing, 100081, China.
| | - Chen Meng
- Institute of Environmental Biology and Life Support Technology, School of Biological Science and Medical Engineering, Beihang University, Beijing, 100083, China
- Beijing Institute of Otolaryngology, Department of Otolaryngology, Head and Neck Surgery, Beijing TongRen Hospital, Capital Medical University, Beijing, 100730, China
| | - Leyuan Li
- Department of Biochemistry, Microbiology and Immunology, Ottawa Institute of Systems Biology, Faculty of Medicine, University of Ottawa, Ottawa, K1H 8M5, Canada
| | - Siyuan Feng
- Institute of Environmental Biology and Life Support Technology, School of Biological Science and Medical Engineering, Beihang University, Beijing, 100083, China
| | - Yinzhen Zhu
- Institute of Environmental Biology and Life Support Technology, School of Biological Science and Medical Engineering, Beihang University, Beijing, 100083, China
| | - Jianlou Yang
- Institute of Environmental Biology and Life Support Technology, School of Biological Science and Medical Engineering, Beihang University, Beijing, 100083, China
| | - Liangzhe Han
- State Key Laboratory of Software Development Environment, School of Computer Science and Engineering, Beihang University, Beijing, 100083, China
| | - Leilei Sun
- State Key Laboratory of Software Development Environment, School of Computer Science and Engineering, Beihang University, Beijing, 100083, China
| | - Weifeng Lv
- State Key Laboratory of Software Development Environment, School of Computer Science and Engineering, Beihang University, Beijing, 100083, China
| | - Daniel Figeys
- Department of Biochemistry, Microbiology and Immunology, Ottawa Institute of Systems Biology, Faculty of Medicine, University of Ottawa, Ottawa, K1H 8M5, Canada
| | - Hong Liu
- Institute of Environmental Biology and Life Support Technology, School of Biological Science and Medical Engineering, Beihang University, Beijing, 100083, China.
- State Key Laboratory of Virtual Reality Technology and Systems, School of Computer Science and Engineering, Beihang University, Beijing, 100083, China.
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3
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Moraes MM, Mendes TT, Borges L, Marques AL, Núñez-Espinosa C, Gonçalves DAP, Simões CB, Vieira TS, Ladeira RVP, Lourenço TGB, Ribeiro DV, Hatanaka E, Heller D, Arantes RME. A 7-Week Summer Camp in Antarctica Induces Fluctuations on Human Oral Microbiome, Pro-Inflammatory Markers and Metabolic Hormones Profile. Microorganisms 2023; 11:microorganisms11020339. [PMID: 36838304 PMCID: PMC9960157 DOI: 10.3390/microorganisms11020339] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2022] [Revised: 01/13/2023] [Accepted: 01/14/2023] [Indexed: 01/31/2023] Open
Abstract
Antarctic camps pose psychophysiological challenges related to isolated, confined, and extreme (ICE) conditions, including meals composed of sealed food. ICE conditions can influence the microbiome and inflammatory responses. Seven expeditioners took part in a 7-week Antarctic summer camp (Nelson Island) and were evaluated at Pre-Camp (i.e., at the beginning of the ship travel), Camp-Initial (i.e., 4th and 5th day in camp), Camp-Middle (i.e., 19th-20th, and 33rd-34th days), Camp-Final (i.e., 45th-46th day), and at the Post-Camp (on the ship). At the Pre-Camp, Camp-Initial, and Camp-Final, we assessed microbiome and inflammatory markers. Catecholamines were accessed Pre- and Post-Camp. Heart rate variability (HRV), leptin, thyroid stimulating hormone (TSH), and thyroxine (T4) were accessed at all time points. Students' t-tests or repeated-measures analysis of variance (one or two-way ANOVA) followed by Student-Newman-Keuls (post hoc) were used for parametric analysis. Kruskal-Wallis test was applied for non-parametric analysis. Microbiome analysis showed a predominance of Pseudomonadota (34.01%), Bacillota (29.82%), and Bacteroidota (18.54%), followed by Actinomycetota (5.85%), and Fusobacteria (5.74%). Staying in a long-term Antarctic camp resulted in microbiome fluctuations with a reduction in Pseudomonadota-a "microbial signature" of disease. However, the pro-inflammatory marker leptin and IL-8 tended to increase, and the angiogenic factor VEGF was reduced during camp. These results suggest that distinct Antarctic natural environments and behavioral factors modulate oral microbiome and inflammation.
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Affiliation(s)
- Michele M. Moraes
- Department of Pathology, Institute of Biological Sciences, Universidade Federal de Minas Gerais, Belo Horizonte 31270-901, MG, Brazil
- Center for Newborn Screening and Genetics Diagnosis, Faculty of Medicine, Universidade Federal de Minas Gerais, NUPAD-FM/UFMG, Belo Horizonte 30130-100, MG, Brazil
| | - Thiago T. Mendes
- Department of Physical Education, Faculty of Education, Universidade Federal da Bahia, Salvador 40170-110, BA, Brazil
| | - Leandro Borges
- Interdisciplinary Program in Health Sciences, Universidade Cruzeiro do Sul, São Paulo 01506-000, SP, Brazil
| | - Alice L. Marques
- Post-Graduation Program in Social Sciences in Development, Culture and Society of the Universidade Federal Rural do Rio de Janeiro, Seropédica 23890-000, RJ, Brazil
| | - Cristian Núñez-Espinosa
- School of Medicine, Universidad de Magallanes, Punta Arenas 6200000, Chile
- Austral Integrative Neurophysiology Group, Centro Asistencial Docente y de Investigación, Universidad de Magallanes, Punta Arenas 6200000, Chile
- Interuniversity Center for Healthy Aging, Punta Arenas 6200000, Chile
| | - Dawit A. P. Gonçalves
- Exercise Physiology Laboratory, School of Physical Education, Physiotherapy and Occupational Therapy, Universidade Federal de Minas Gerais, Belo Horizonte 31270-901, MG, Brazil
- Sports Training Center, School of Physical Education, Physiotherapy and Occupational Therapy, Universidade Federal de Minas Gerais, Belo Horizonte 31270-901, MG, Brazil
| | - Carolina B. Simões
- Exercise Physiology Laboratory, School of Physical Education, Physiotherapy and Occupational Therapy, Universidade Federal de Minas Gerais, Belo Horizonte 31270-901, MG, Brazil
- Sports Training Center, School of Physical Education, Physiotherapy and Occupational Therapy, Universidade Federal de Minas Gerais, Belo Horizonte 31270-901, MG, Brazil
| | - Tales S. Vieira
- Exercise Physiology Laboratory, School of Physical Education, Physiotherapy and Occupational Therapy, Universidade Federal de Minas Gerais, Belo Horizonte 31270-901, MG, Brazil
| | - Roberto V. P. Ladeira
- Center for Newborn Screening and Genetics Diagnosis, Faculty of Medicine, Universidade Federal de Minas Gerais, NUPAD-FM/UFMG, Belo Horizonte 30130-100, MG, Brazil
| | - Talita G. B. Lourenço
- Oral Microbiology Laboratory, Institute of Microbiology Paulo de Góes, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21941-902, RJ, Brazil
| | - Danielle V. Ribeiro
- Hospital Israelita Albert Einstein, São Paulo 05652-900, SP, Brazil
- Post-Graduate Studies in Dentistry, Universidade Cruzeiro do Sul, São Paulo 430-0926, SP, Brazil
| | - Elaine Hatanaka
- Interdisciplinary Program in Health Sciences, Universidade Cruzeiro do Sul, São Paulo 01506-000, SP, Brazil
| | - Debora Heller
- Hospital Israelita Albert Einstein, São Paulo 05652-900, SP, Brazil
- Post-Graduate Studies in Dentistry, Universidade Cruzeiro do Sul, São Paulo 430-0926, SP, Brazil
- Department of Periodontology, School of Dentistry, UT Health San Antonio, San Antonio, TX 78229, USA
| | - Rosa M. E. Arantes
- Department of Pathology, Institute of Biological Sciences, Universidade Federal de Minas Gerais, Belo Horizonte 31270-901, MG, Brazil
- Center for Newborn Screening and Genetics Diagnosis, Faculty of Medicine, Universidade Federal de Minas Gerais, NUPAD-FM/UFMG, Belo Horizonte 30130-100, MG, Brazil
- Correspondence: ; Tel.: +55-(31)-999037400
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Wong YS, Osborne NJ. Biodiversity Effects on Human Mental Health via Microbiota Alterations. Int J Environ Res Public Health 2022; 19:11882. [PMID: 36231182 PMCID: PMC9565733 DOI: 10.3390/ijerph191911882] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/11/2022] [Revised: 09/12/2022] [Accepted: 09/14/2022] [Indexed: 06/16/2023]
Abstract
The biodiversity hypothesis postulates that the natural environment positively affects human physical and mental health. We evaluate the latest evidence and propose new tools to examine the halobiont environment. We chose to target our review at neuropsychiatric disorders, including depression, anxiety, autism, dementia, multiple sclerosis, etc. because a green prescription (exposure to green spaces) was shown to benefit patients with neuropsychiatric disorders. Specifically, our review consists of three mini reviews on the associations exploring: (1) ecological biodiversity and human microbiota; (2) human microbiota and neuropsychiatric disorders; (3) ecological biodiversity and neuropsychiatric disorders. We conclude that the environment could directly transfer microbes to humans and that human studies support the gut microbiota as part of the pathophysiology of neuropsychiatric disorders. Overall, the results from the three mini reviews consistently support the biodiversity hypothesis. These findings demonstrated the plausibility of biodiversity exerting mental health effects through biophysiological mechanisms instead of psychological mechanisms alone. The idea can be further tested with novel biodiversity measurements and research on the effects of a green prescription.
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Affiliation(s)
- Yee Sang Wong
- School of Medicine, The University of Queensland, Herston, QLD 4006, Australia
| | - Nicholas John Osborne
- School of Public Health, The University of Queensland, Herston, QLD 4006, Australia
- School of Population Health, University of New South Wales, Sydney, NSW 2052, Australia
- European Centre for Environment and Human Health (ECEHH), University of Exeter Medical School, Knowledge Spa, Royal Cornwall Hospital, Truro TR1 3HD, Cornwall, UK
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5
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Tominaga K, Tsuchiya A, Mizusawa T, Matsumoto A, Minemura A, Oka K, Takahashi M, Yoshida T, Kojima Y, Ogawa K, Kawata Y, Nakajima N, Kimura N, Abe H, Setsu T, Takahashi K, Sato H, Ikarashi S, Hayashi K, Mizuno K, Yokoyama J, Tajima Y, Nakano M, Shimada Y, Kameyama H, Wakai T, Terai S. Utility of autologous fecal microbiota transplantation and elucidation of microbiota in diversion colitis. DEN Open 2022; 2:e63. [PMID: 35310733 PMCID: PMC8828251 DOI: 10.1002/deo2.63] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/13/2021] [Revised: 09/08/2021] [Accepted: 09/12/2021] [Indexed: 11/23/2022]
Abstract
Objectives Diversion colitis (DC) is an inflammatory disorder caused by interruption of the fecal stream and subsequent nutrient deficiency from luminal bacteria. The utility of fecal microbiota transplantation (FMT) for DC was recently investigated; however, the precise pathogenesis of this condition remains unclear. This study aimed to evaluate the utility of autologous FMT in DC and to determine the related changes in the intestinal microbiota. Methods Autologous FMT was performed to reestablish the intestinal microbiota in five patients (average age, 64.6 ± 8.3 years) with DC. They underwent double‐ended colostomy. We assessed the diverted colon by endoscopy and evaluated the microbiota before and after FMT using the 16S rRNA gene sequencing method. Results All five patients had mild inflammation (ulcerative colitis endoscopic index of severity [UCEIS] 2–3) in the diverted colon based on the colonoscopic findings. Three patients presented with symptoms, such as tenesmus, mucoid stool, and bloody stool. With FMT treatment, all patients achieved endoscopic remission (UCEIS score of 0 or 1) and symptomatic improvement. We observed a significantly decreased α‐diversity in DC patients compared to healthy controls. The frequency of aerobic bacteria, such as Enterobacteriaceae, in the diverted colon decreased after autologous FMT. Conclusions This study was the first to show that the microbiota in the diverted colon was significantly affected by autologous FMT. Since interruption of the fecal stream is central to the development of DC, FMT can be considered a promising treatment.
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Affiliation(s)
- Kentaro Tominaga
- Division of Gastroenterology and Hepatology Graduate School of Medical and Dental Sciences Niigata University Niigata Japan
| | - Atsunori Tsuchiya
- Division of Gastroenterology and Hepatology Graduate School of Medical and Dental Sciences Niigata University Niigata Japan
| | - Takeshi Mizusawa
- Division of Gastroenterology and Hepatology Graduate School of Medical and Dental Sciences Niigata University Niigata Japan
| | - Asami Matsumoto
- R&D Division Miyarisan Pharmaceutical Co. Ltd. Saitama Japan
| | - Ayaka Minemura
- R&D Division Miyarisan Pharmaceutical Co. Ltd. Saitama Japan
| | - Kentaro Oka
- R&D Division Miyarisan Pharmaceutical Co. Ltd. Saitama Japan
| | | | - Tomoaki Yoshida
- Division of Gastroenterology and Hepatology Graduate School of Medical and Dental Sciences Niigata University Niigata Japan
| | - Yuichi Kojima
- Division of Gastroenterology and Hepatology Graduate School of Medical and Dental Sciences Niigata University Niigata Japan
| | - Kohei Ogawa
- Division of Gastroenterology and Hepatology Graduate School of Medical and Dental Sciences Niigata University Niigata Japan
| | - Yuzo Kawata
- Division of Gastroenterology and Hepatology Graduate School of Medical and Dental Sciences Niigata University Niigata Japan
| | - Nao Nakajima
- Division of Gastroenterology and Hepatology Graduate School of Medical and Dental Sciences Niigata University Niigata Japan
| | - Naruhiro Kimura
- Division of Gastroenterology and Hepatology Graduate School of Medical and Dental Sciences Niigata University Niigata Japan
| | - Hiroyuki Abe
- Division of Gastroenterology and Hepatology Graduate School of Medical and Dental Sciences Niigata University Niigata Japan
| | - Toru Setsu
- Division of Gastroenterology and Hepatology Graduate School of Medical and Dental Sciences Niigata University Niigata Japan
| | - Kazuya Takahashi
- Division of Gastroenterology and Hepatology Graduate School of Medical and Dental Sciences Niigata University Niigata Japan
| | - Hiroki Sato
- Division of Gastroenterology and Hepatology Graduate School of Medical and Dental Sciences Niigata University Niigata Japan
| | - Satoshi Ikarashi
- Division of Gastroenterology and Hepatology Graduate School of Medical and Dental Sciences Niigata University Niigata Japan
| | - Kazunao Hayashi
- Division of Gastroenterology and Hepatology Graduate School of Medical and Dental Sciences Niigata University Niigata Japan
| | - Ken‐ichi Mizuno
- Division of Gastroenterology and Hepatology Graduate School of Medical and Dental Sciences Niigata University Niigata Japan
| | - Junji Yokoyama
- Division of Gastroenterology and Hepatology Graduate School of Medical and Dental Sciences Niigata University Niigata Japan
| | - Yosuke Tajima
- Division of Digestive and General Surgery Graduate School of Medical and Dental Sciences Niigata University Niigata Japan
| | - Masato Nakano
- Division of Digestive and General Surgery Graduate School of Medical and Dental Sciences Niigata University Niigata Japan
| | - Yoshifumi Shimada
- Division of Digestive and General Surgery Graduate School of Medical and Dental Sciences Niigata University Niigata Japan
| | - Hitoshi Kameyama
- Division of Digestive and General Surgery Graduate School of Medical and Dental Sciences Niigata University Niigata Japan
| | - Toshifumi Wakai
- Division of Digestive and General Surgery Graduate School of Medical and Dental Sciences Niigata University Niigata Japan
| | - Shuji Terai
- Division of Gastroenterology and Hepatology Graduate School of Medical and Dental Sciences Niigata University Niigata Japan
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Oya M, Tokunaga T, Tadano Y, Ogawa H, Fujii S, Murakami W, Tamai K, Ikomi F, Morimoto Y. The composition of the human fecal microbiota might be significantly associated with fecal SCFA levels under hyperbaric conditions. Biosci Microbiota Food Health 2021; 40:168-175. [PMID: 34631328 PMCID: PMC8484010 DOI: 10.12938/bmfh.2020-054] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/08/2020] [Accepted: 03/18/2021] [Indexed: 01/03/2023]
Abstract
The fecal microbiota and short-chain fatty acids (SCFAs) play important roles in the
human body. This study examined how hyperbaric conditions affect the fecal microbiota and
fecal SCFAs. Fecal samples were obtained from 12 divers at three points during deep-diving
training (before the diving training, at 2.1 MPa, and after decompression). At 2.1 MPa,
the changes in the frequency of Clostridium cluster IV and fecal
iso-valerate levels were positively correlated, and the changes in the frequencies of
Bacteroides and Clostridium subcluster XIVa were
inversely correlated. After decompression, positive correlations were detected between the
changes in the frequency of Bifidobacterium and fecal n-valerate levels
and between the changes in the fecal levels of iso-butyrate and iso-valerate. On the other
hand, inverse correlations were detected between the changes in the frequency of
Clostridium cluster IX and fecal iso-butyrate levels, between the
changes in the frequency of Clostridium cluster IX and fecal iso-valerate
levels, and between the changes in the frequencies of Bacteroides and
Clostridium cluster IV plus subcluster XIVa. During the study period,
the changes in fecal iso-butyrate and iso-valerate levels were positively correlated, and
inverse correlations were seen between the changes in the frequency of
Clostridium cluster IV and fecal propionate levels and between the
changes in the frequencies of Prevotella and Clostridium
subcluster XIVa. These findings suggest that hyperbaric conditions affect the fecal
microbiota and fecal SCFA levels and that intestinal conditions reversibly deteriorate
under hyperbaric conditions.
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Affiliation(s)
- Morihiko Oya
- Research Division, Maritime Self-Defense Force Undersea Medical Center, Tauraminatocho, Yokosuka 237-0071, Japan
| | - Tetsuji Tokunaga
- Clinical Division, Japan Self-Defense Force Yokosuka Hospital, Tauraminatocho, Yokosuka 237-0071, Japan
| | - Yutaka Tadano
- Research Division, Maritime Self-Defense Force Undersea Medical Center, Tauraminatocho, Yokosuka 237-0071, Japan
| | - Hitoshi Ogawa
- Research Division, Maritime Self-Defense Force Undersea Medical Center, Tauraminatocho, Yokosuka 237-0071, Japan
| | - Shigenori Fujii
- Research Division, Maritime Self-Defense Force Undersea Medical Center, Tauraminatocho, Yokosuka 237-0071, Japan
| | - Wakana Murakami
- Research Division, Maritime Self-Defense Force Undersea Medical Center, Tauraminatocho, Yokosuka 237-0071, Japan
| | - Kenji Tamai
- Research Division, Maritime Self-Defense Force Undersea Medical Center, Tauraminatocho, Yokosuka 237-0071, Japan
| | - Fumitaka Ikomi
- Research Division, Maritime Self-Defense Force Undersea Medical Center, Tauraminatocho, Yokosuka 237-0071, Japan.,National Defense Medical College Research Institute, 3-2 Namiki, Tokorozawa 359-8513, Japan
| | - Yuji Morimoto
- Department of Integrative Physiology and Bio-Nano Medicine, National Defense Medical College, 3-2 Namiki, Tokorozawa 359-8513, Japan
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Srivastava AK, Rohil V, Bhushan B, Eslavath MR, Gupta H, Chanda S, Kumar B, Varshney R, Ganju L. Probiotics maintain the gut microbiome homeostasis during Indian Antarctic expedition by ship. Sci Rep 2021; 11:18793. [PMID: 34552104 DOI: 10.1038/s41598-021-97890-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2021] [Accepted: 08/31/2021] [Indexed: 02/08/2023] Open
Abstract
Ship voyage to Antarctica is a stressful journey for expedition members. The response of human gut microbiota to ship voyage and a feasible approach to maintain gut health, is still unexplored. The present findings describe a 24-day long longitudinal study involving 19 members from 38th Indian Antarctic Expedition, to investigate the impact of ship voyage and effect of probiotic intervention on gut microbiota. Fecal samples collected on day 0 as baseline and at the end of ship voyage (day 24), were analyzed using whole genome shotgun sequencing. Probiotic intervention reduced the sea sickness by 10% compared to 44% in placebo group. The gut microbiome in placebo group members on day 0 and day 24, indicated significant alteration compared to a marginal change in the microbial composition in probiotic group. Functional analysis revealed significant alterations in carbohydrate and amino acid metabolism. Carbohydrate-active enzymes analysis represented functional genes involved in glycoside hydrolases, glycosyltransferases and carbohydrate binding modules, for maintaining gut microbiome homeostasis. Suggesting thereby the possible mechanism of probiotic in stabilizing and restoring gut microflora during stressful ship journey. The present study is first of its kind, providing a feasible approach for protecting gut health during Antarctic expedition involving ship voyage.
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8
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Tominaga K, Tsuchiya A, Nakano O, Kuroki Y, Oka K, Minemura A, Matsumoto A, Takahashi M, Kadota Y, Tochio T, Niwa Y, Yoshida T, Sato M, Yokoo T, Hashimoto S, Yokoyama J, Matsuzawa J, Fujimori K, Terai S. Increase in muscle mass associated with the prebiotic effects of 1-kestose in super-elderly patients with sarcopenia. Biosci Microbiota Food Health 2021; 40:150-155. [PMID: 34285860 PMCID: PMC8279888 DOI: 10.12938/bmfh.2020-063] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/30/2020] [Accepted: 02/04/2021] [Indexed: 01/12/2023]
Abstract
Sarcopenia causes functional disorders and decreases the quality of life. Thus, it has
attracted substantial attention in the aging modern world. Dysbiosis of the intestinal
microbiota is associated with sarcopenia; however, it remains unclear whether prebiotics
change the microbiota composition and result in the subsequent recovery of muscle atrophy
in elderly patients with sarcopenia. This study aimed to assess the effects of prebiotics
in super-elderly patients with sarcopenia. We analyzed the effects of 1-kestose on the
changes in the intestinal microbiota and body composition using a next-generation
sequencer and a multi-frequency bioimpedance analysis device. The Bifidobacterium
longum population was significantly increased in the intestine after 1-kestose
administration. In addition, in all six patients after 12 weeks of 1-kestose
administration, the skeletal muscle mass index was greater, and the body fat percentage
was lower. This is the first study to show that administration of a prebiotic increased
the population of B. longum in the intestinal microbiota and caused
recovery of muscle atrophy in super-elderly patients with sarcopenia.
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Affiliation(s)
- Kentaro Tominaga
- Division of Gastroenterology and Hepatology, Graduate School of Medical and Dental Sciences, Niigata University, 1-757 Asahimachi-dori, Chuo-ku, Niigata, Niigata 951-8510, Japan
| | - Atsunori Tsuchiya
- Division of Gastroenterology and Hepatology, Graduate School of Medical and Dental Sciences, Niigata University, 1-757 Asahimachi-dori, Chuo-ku, Niigata, Niigata 951-8510, Japan
| | - Oki Nakano
- Division of Gastroenterology and Hepatology, Graduate School of Medical and Dental Sciences, Niigata University, 1-757 Asahimachi-dori, Chuo-ku, Niigata, Niigata 951-8510, Japan
| | - Yasutoshi Kuroki
- Central Research Institute, Miyarisan Pharmaceutical Co., Ltd., Saitama 331-0804, Japan
| | - Kentaro Oka
- Central Research Institute, Miyarisan Pharmaceutical Co., Ltd., Saitama 331-0804, Japan
| | - Ayaka Minemura
- Central Research Institute, Miyarisan Pharmaceutical Co., Ltd., Saitama 331-0804, Japan
| | - Asami Matsumoto
- Central Research Institute, Miyarisan Pharmaceutical Co., Ltd., Saitama 331-0804, Japan
| | - Motomichi Takahashi
- Central Research Institute, Miyarisan Pharmaceutical Co., Ltd., Saitama 331-0804, Japan
| | - Yoshihiro Kadota
- Research and Development Center, B Food Science Co., Ltd., Aichi 478-0046, Japan
| | - Takumi Tochio
- Research and Development Center, B Food Science Co., Ltd., Aichi 478-0046, Japan
| | - Yusuke Niwa
- Division of Gastroenterology and Hepatology, Graduate School of Medical and Dental Sciences, Niigata University, 1-757 Asahimachi-dori, Chuo-ku, Niigata, Niigata 951-8510, Japan
| | - Tomoaki Yoshida
- Division of Gastroenterology and Hepatology, Graduate School of Medical and Dental Sciences, Niigata University, 1-757 Asahimachi-dori, Chuo-ku, Niigata, Niigata 951-8510, Japan
| | - Masatoshi Sato
- Division of Gastroenterology and Hepatology, Graduate School of Medical and Dental Sciences, Niigata University, 1-757 Asahimachi-dori, Chuo-ku, Niigata, Niigata 951-8510, Japan
| | - Takeshi Yokoo
- Division of Gastroenterology and Hepatology, Graduate School of Medical and Dental Sciences, Niigata University, 1-757 Asahimachi-dori, Chuo-ku, Niigata, Niigata 951-8510, Japan
| | - Satoru Hashimoto
- Division of Gastroenterology and Hepatology, Graduate School of Medical and Dental Sciences, Niigata University, 1-757 Asahimachi-dori, Chuo-ku, Niigata, Niigata 951-8510, Japan
| | - Junji Yokoyama
- Division of Gastroenterology and Hepatology, Graduate School of Medical and Dental Sciences, Niigata University, 1-757 Asahimachi-dori, Chuo-ku, Niigata, Niigata 951-8510, Japan
| | - Jun Matsuzawa
- Division of Gastroenterology and Hepatology, Agano City General Hospital, Agano, Japan
| | - Katsuya Fujimori
- Division of Gastroenterology and Hepatology, Agano City General Hospital, Agano, Japan
| | - Shuji Terai
- Division of Gastroenterology and Hepatology, Graduate School of Medical and Dental Sciences, Niigata University, 1-757 Asahimachi-dori, Chuo-ku, Niigata, Niigata 951-8510, Japan
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9
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Tominaga K, Tsuchiya A, Mizusawa T, Matsumoto A, Minemura A, Oka K, Takahashi M, Yosida T, Kawata Y, Takahashi K, Sato H, Ikarashi S, Hayashi K, Mizuno KI, Tajima Y, Nakano M, Shimada Y, Kameyama H, Yokoyama J, Wakai T, Terai S. Evaluation of intestinal microbiota, short-chain fatty acids, and immunoglobulin a in diversion colitis. Biochem Biophys Rep 2020; 25:100892. [PMID: 33458259 PMCID: PMC7797511 DOI: 10.1016/j.bbrep.2020.100892] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2020] [Revised: 11/17/2020] [Accepted: 12/18/2020] [Indexed: 02/07/2023] Open
Abstract
It is reported that an increase in aerobic bacteria, a lack of short-chain fatty acids (SCFAs), and immune disorders in the diverted colon are major causes of diversion colitis. However, the precise pathogenesis of this condition remains unclear. The aim of the present study was to examine the microbiota, intestinal SCFAs, and immunoglobulin A (IgA) in the diverted colon. Eight patients underwent operative procedures for colostomies. We assessed the diverted colon using endoscopy and obtained intestinal samples from the diverted colon and oral colon in these patients. We analyzed the microbiota and SCFAs of the intestinal samples. The bacterial communities were investigated using a 16S rRNA gene sequencing method. The microbiota demonstrated a change in the proportion of some species, especially Lactobacillus, which significantly decreased in the diverted colon at the genus level. We also showed that intestinal SCFA values were significantly decreased in the diverted colon. Furthermore, intestinal IgA levels were significantly increased in the diverted colon. This study was the first to show that intestinal SCFAs were significantly decreased and intestinal IgA was significantly increased in the diverted colon. Our data suggest that SCFAs affect the microbiota and may play an immunological role in diversion colitis. Anaerobic bacteria like Lactobacillus significantly decreased in the diverted colon. Fecal short-chain fatty acids significantly decreased in the diverted colon. Acetic acid also decreased significantly in the diverted colon. Fecal immunoglobulin A levels were significantly increased in the diverted colon.
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Affiliation(s)
- Kentaro Tominaga
- Division of Gastroenterology and Hepatology, Graduate School of Medical and Dental Sciences, Niigata University, Niigata, Japan
| | - Atsunori Tsuchiya
- Division of Gastroenterology and Hepatology, Graduate School of Medical and Dental Sciences, Niigata University, Niigata, Japan
| | - Takeshi Mizusawa
- Division of Gastroenterology and Hepatology, Graduate School of Medical and Dental Sciences, Niigata University, Niigata, Japan
| | - Asami Matsumoto
- Research Department, R&D Division, Miyarisan Pharmaceutical Co., Ltd., Saitama, Japan
| | - Ayaka Minemura
- Research Department, R&D Division, Miyarisan Pharmaceutical Co., Ltd., Saitama, Japan
| | - Kentaro Oka
- Research Department, R&D Division, Miyarisan Pharmaceutical Co., Ltd., Saitama, Japan
| | - Motomichi Takahashi
- Research Department, R&D Division, Miyarisan Pharmaceutical Co., Ltd., Saitama, Japan
| | - Tomoaki Yosida
- Division of Gastroenterology and Hepatology, Graduate School of Medical and Dental Sciences, Niigata University, Niigata, Japan
| | - Yuzo Kawata
- Division of Gastroenterology and Hepatology, Graduate School of Medical and Dental Sciences, Niigata University, Niigata, Japan
| | - Kazuya Takahashi
- Division of Gastroenterology and Hepatology, Graduate School of Medical and Dental Sciences, Niigata University, Niigata, Japan
| | - Hiroki Sato
- Division of Gastroenterology and Hepatology, Graduate School of Medical and Dental Sciences, Niigata University, Niigata, Japan
| | - Satoshi Ikarashi
- Division of Gastroenterology and Hepatology, Graduate School of Medical and Dental Sciences, Niigata University, Niigata, Japan
| | - Kazunao Hayashi
- Division of Gastroenterology and Hepatology, Graduate School of Medical and Dental Sciences, Niigata University, Niigata, Japan
| | - Ken-Ichi Mizuno
- Division of Gastroenterology and Hepatology, Graduate School of Medical and Dental Sciences, Niigata University, Niigata, Japan
| | - Yosuke Tajima
- Division of Digestive and General Surgery, Graduate School of Medical and Dental Sciences, Niigata University, Niigata, Japan
| | - Masato Nakano
- Division of Digestive and General Surgery, Graduate School of Medical and Dental Sciences, Niigata University, Niigata, Japan
| | - Yoshifumi Shimada
- Division of Digestive and General Surgery, Graduate School of Medical and Dental Sciences, Niigata University, Niigata, Japan
| | - Hitoshi Kameyama
- Division of Digestive and General Surgery, Graduate School of Medical and Dental Sciences, Niigata University, Niigata, Japan
| | - Junji Yokoyama
- Division of Gastroenterology and Hepatology, Graduate School of Medical and Dental Sciences, Niigata University, Niigata, Japan
| | - Toshifumi Wakai
- Division of Digestive and General Surgery, Graduate School of Medical and Dental Sciences, Niigata University, Niigata, Japan
| | - Shuji Terai
- Division of Gastroenterology and Hepatology, Graduate School of Medical and Dental Sciences, Niigata University, Niigata, Japan
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10
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Ji Y, Liang X, Lu H. Analysis of by high-throughput sequencing: Helicobacter pylori infection and salivary microbiome. BMC Oral Health 2020; 20:84. [PMID: 32197614 PMCID: PMC7333272 DOI: 10.1186/s12903-020-01070-1] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2019] [Accepted: 03/10/2020] [Indexed: 02/07/2023] Open
Abstract
Background There have been reports of Helicobacter pylori (H. pylori) in the oral cavity and it has been suggested that the oral cavity may be a reservoir for H. pylori reflux from the stomach. High-throughput sequencing was used to assess the structure and composition of oral microbiota communities in individuals with or without confirmed H. pylori infection. Methods Saliva samples were obtained from 34 H. pylori infected and 24 H. pylori uninfected subjects. Bacterial genomic DNA was extracted and examined by sequencing by amplification of the 16S rDNA V3-V4 hypervariable regions followed by bioinformatics analysis. Saliva sampling was repeated from 22 of the 34 H. pylori infected subjects 2 months after H. pylori eradication. Results High-quality sequences (2,812,659) clustered into 95,812 operational taxonomic units (OTUs; 97% identity). H. pylori was detected in the oral cavity in infected (12/34), uninfected (11/24) and eradicated (15/22) subjects by technique of high-throughput sequencing, occupying 0.0139% of the total sequences. Alpha diversity of H. pylori infected subjects was similar to that of uninfected subjects (Shannon: 1417.58 vs. 1393.60, p > 0.05, ACE: 1491.22 vs. 1465.97, p > 0.05, Chao 1: 1417.58 vs. 1393.60, p > 0.05, t-test). Eradication treatment decreased salivary bacterial diversity (Shannon, p = 0.015, ACE, p = 0.003, Chao 1, p = 0.002, t-test). Beta diversity analysis based on unweighted UniFrac distances showed that the salivary microbial community structure differed between H. pylori infected and uninfected subjects (PERMANOVAR, pseudo-F: 1.49, p = 0.033), as well as before and after H. pylori eradication (PERMANOVAR, pseudo-F: 3.34, p = 0.001). Using LEfSe analysis, 16 differentially abundant genera were defined between infected and uninfected subjects, 12 of which had a further alteration after successful eradication. Conclusions Our study using high-throughput sequencing showed that H. pylori was present commonly in the oral cavity with no clear relation to H. pylori infection of the stomach. Both H. pylori infection and eradication therapy caused alterations in community and structure of the oral microbiota. Trial registration clinicaltrials.gov, NCT03730766. Registered 2 Nov 2018 - Retrospectively registered, https://clinicaltrials.gov/ct2/show/ NCT03730766.
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Affiliation(s)
- Yingjie Ji
- Division of Gastroenterology and Hepatology, Key Laboratory of Gastroenterology and Hepatology, Ministry of Health, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Xiao Liang
- Division of Gastroenterology and Hepatology, Key Laboratory of Gastroenterology and Hepatology, Ministry of Health, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Hong Lu
- Division of Gastroenterology and Hepatology, Key Laboratory of Gastroenterology and Hepatology, Ministry of Health, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China.
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11
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Horve PF, Lloyd S, Mhuireach GA, Dietz L, Fretz M, MacCrone G, Van Den Wymelenberg K, Ishaq SL. Building upon current knowledge and techniques of indoor microbiology to construct the next era of theory into microorganisms, health, and the built environment. J Expo Sci Environ Epidemiol 2020; 30:219-235. [PMID: 31308484 PMCID: PMC7100162 DOI: 10.1038/s41370-019-0157-y] [Citation(s) in RCA: 41] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/05/2019] [Revised: 06/23/2019] [Accepted: 06/30/2019] [Indexed: 05/06/2023]
Abstract
In the constructed habitat in which we spend up to 90% of our time, architectural design influences occupants' behavioral patterns, interactions with objects, surfaces, rituals, the outside environment, and each other. Within this built environment, human behavior and building design contribute to the accrual and dispersal of microorganisms; it is a collection of fomites that transfer microorganisms; reservoirs that collect biomass; structures that induce human or air movement patterns; and space types that encourage proximity or isolation between humans whose personal microbial clouds disperse cells into buildings. There have been recent calls to incorporate building microbiology into occupant health and exposure research and standards, yet the built environment is largely viewed as a repository for microorganisms which are to be eliminated, instead of a habitat which is inexorably linked to the microbial influences of building inhabitants. Health sectors have re-evaluated the role of microorganisms in health, incorporating microorganisms into prevention and treatment protocols, yet no paradigm shift has occurred with respect to microbiology of the built environment, despite calls to do so. Technological and logistical constraints often preclude our ability to link health outcomes to indoor microbiology, yet sufficient study exists to inform the theory and implementation of the next era of research and intervention in the built environment. This review presents built environment characteristics in relation to human health and disease, explores some of the current experimental strategies and interventions which explore health in the built environment, and discusses an emerging model for fostering indoor microbiology rather than fearing it.
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Affiliation(s)
- Patrick F Horve
- Biology and the Built Environment Center, University of Oregon, Eugene, OR, 97403, USA
| | - Savanna Lloyd
- Biology and the Built Environment Center, University of Oregon, Eugene, OR, 97403, USA
| | - Gwynne A Mhuireach
- Biology and the Built Environment Center, University of Oregon, Eugene, OR, 97403, USA
| | - Leslie Dietz
- Biology and the Built Environment Center, University of Oregon, Eugene, OR, 97403, USA
| | - Mark Fretz
- Institute for Health and the Built Environment, University of Oregon, Portland, OR, 97209, USA
| | - Georgia MacCrone
- Biology and the Built Environment Center, University of Oregon, Eugene, OR, 97403, USA
| | - Kevin Van Den Wymelenberg
- Biology and the Built Environment Center, University of Oregon, Eugene, OR, 97403, USA
- Institute for Health and the Built Environment, University of Oregon, Portland, OR, 97209, USA
| | - Suzanne L Ishaq
- Biology and the Built Environment Center, University of Oregon, Eugene, OR, 97403, USA.
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12
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Chen J, Wang Q, Hao Z, Li Z, Sahu SK, Liu H, Xiao L. Relationship between the Gut Microbiome and Energy/Nutrient Intake in a Confined Bioregenerative Life Support System. Appl Environ Microbiol 2020; 86:e02465-19. [PMID: 31811045 PMCID: PMC6997737 DOI: 10.1128/aem.02465-19] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2019] [Accepted: 12/02/2019] [Indexed: 02/07/2023] Open
Abstract
Recent studies have suggested that the gut microbiome is modified in space analogs and that human health can be affected during actual spaceflight. However, the relationship between the gut microbiome and dietary intake in simulator subjects and astronauts remains unclear. Bioregenerative life support systems (BLSSs) are confined and self-sufficient ecosystems that enable exploration of this issue. Here, we correlate changes in gut microbes to the nutrient types present in controlled diets within subjects cohabitating in a BLSS. A metagenome-wide association study (MWAS) was performed on 55 shotgun-sequenced fecal samples longitudinally obtained from healthy Chinese subjects (n = 4 in total, n = 2 per sex) subjected to a 60-day BLSS stay and a specialized diet. Each food item was categorized based on nutrient type according to the Chinese Food Ingredients List (https://wenku.baidu.com/view/3f2b628488eb172ded630b1c59eef8c75fbf9514.html?from=search). The physical parameters of each subject fluctuated within normal medical ranges. Sex- and individual-specific differences and a trend of individual convergence of the gut microbiome in the BLSS were observed. Depletion of bacterial taxa such as Faecalibacterium prausnitzii, Bifidobacterium longum, and Escherichia coli and functional modules such as short-chain fatty acid (SCFA) production, as well as an increase in an unidentified Lachnospiraceae and glutamate/tryptophan synthesis, were observed in the BLSS. Correlation analysis showed that these compositional and functional changes were associated with energy/nutrient intake during the BLSS stay. Our findings suggest that the gut microbiota is a useful indicator for monitoring health and that individual nutritive diets should be considered according to sex and individual differences in simulations or in spaceflight.IMPORTANCE The gut microbiome shows individual specificity and is affected by sex, environment, and diet; gut microbiome imbalance is related to cancer, cardiovascular diseases, and autoimmune diseases. Astronauts are faced with a challenging environment and limited diet in outer space. Recent studies indicate that the gut microbiome is altered in space simulators and space, but what happens to intestinal microorganisms when astronauts cohabitate in a self-sufficient ecosystem in which they plant and cook food is unclear. Bioregenerative life support systems (BLSSs) are ideal devices to investigate the above issues because they are closed and self-sufficient. Four healthy Chinese subjects cohabitated in a confined BLSS for 60 days, during which their physical parameters and energy/nutrient intake were recorded. We performed a metagenome-wide association study (MWAS) on 55 shotgun-sequenced fecal samples longitudinally obtained from the subjects. Alterations occurred in the gut microbial composition and function, and their relationships with energy/nutrient intake were explored.
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Affiliation(s)
- Juanjuan Chen
- School of Biology and Biological Engineering, South China University of Technology, Guangzhou, China
- BGI-Shenzhen, Shenzhen, China
| | - Qi Wang
- BGI-Shenzhen, Shenzhen, China
- BGI Education Center, University of Chinese Academy of Sciences, Shenzhen, China
| | - Zikai Hao
- Institute of Environmental Biology and Life Support Technology, School of Biological Science and Medical Engineering, Beihang University, Beijing, China
| | | | | | - Hong Liu
- Institute of Environmental Biology and Life Support Technology, School of Biological Science and Medical Engineering, Beihang University, Beijing, China
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13
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Dedrick S, Sundaresh B, Huang Q, Brady C, Yoo T, Cronin C, Rudnicki C, Flood M, Momeni B, Ludvigsson J, Altindis E. The Role of Gut Microbiota and Environmental Factors in Type 1 Diabetes Pathogenesis. Front Endocrinol (Lausanne) 2020; 11:78. [PMID: 32174888 PMCID: PMC7057241 DOI: 10.3389/fendo.2020.00078] [Citation(s) in RCA: 76] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/21/2019] [Accepted: 02/06/2020] [Indexed: 12/11/2022] Open
Abstract
Type 1 Diabetes (T1D) is regarded as an autoimmune disease characterized by insulin deficiency resulting from destruction of pancreatic β-cells. The incidence rates of T1D have increased worldwide. Over the past decades, progress has been made in understanding the complexity of the immune response and its role in T1D pathogenesis, however, the trigger of T1D autoimmunity remains unclear. The increasing incidence rates, immigrant studies, and twin studies suggest that environmental factors play an important role and the trigger cannot simply be explained by genetic predisposition. Several research initiatives have identified environmental factors that potentially contribute to the onset of T1D autoimmunity and the progression of disease in children/young adults. More recently, the interplay between gut microbiota and the immune system has been implicated as an important factor in T1D pathogenesis. Although results often vary between studies, broad compositional and diversity patterns have emerged from both longitudinal and cross-sectional human studies. T1D patients have a less diverse gut microbiota, an increased prevalence of Bacteriodetes taxa and an aberrant metabolomic profile compared to healthy controls. In this comprehensive review, we present the data obtained from both animal and human studies focusing on the large longitudinal human studies. These studies are particularly valuable in elucidating the environmental factors that lead to aberrant gut microbiota composition and potentially contribute to T1D. We also discuss how environmental factors, such as birth mode, diet, and antibiotic use modulate gut microbiota and how this potentially contributes to T1D. In the final section, we focus on existing recent literature on microbiota-produced metabolites, proteins, and gut virome function as potential protectants or triggers of T1D onset. Overall, current results indicate that higher levels of diversity along with the presence of beneficial microbes and the resulting microbial-produced metabolites can act as protectors against T1D onset. However, the specifics of the interplay between host and microbes are yet to be discovered.
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Affiliation(s)
- Sandra Dedrick
- Biology Department, Boston College, Chestnut Hill, MA, United States
| | | | - Qian Huang
- Biology Department, Boston College, Chestnut Hill, MA, United States
| | - Claudia Brady
- Biology Department, Boston College, Chestnut Hill, MA, United States
| | - Tessa Yoo
- Biology Department, Boston College, Chestnut Hill, MA, United States
| | - Catherine Cronin
- Biology Department, Boston College, Chestnut Hill, MA, United States
| | - Caitlin Rudnicki
- Biology Department, Boston College, Chestnut Hill, MA, United States
| | - Michael Flood
- Biology Department, Boston College, Chestnut Hill, MA, United States
| | - Babak Momeni
- Biology Department, Boston College, Chestnut Hill, MA, United States
| | - Johnny Ludvigsson
- Department of Clinical and Experimental Medicine, Linköping University, Linköping, Sweden
| | - Emrah Altindis
- Biology Department, Boston College, Chestnut Hill, MA, United States
- *Correspondence: Emrah Altindis
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14
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Wagatsuma K, Yamada S, Ao M, Matsuura M, Tsuji H, Iida T, Miyamoto K, Oka K, Takahashi M, Tanaka K, Nakase H. Diversity of Gut Microbiota Affecting Serum Level of Undercarboxylated Osteocalcin in Patients with Crohn's Disease. Nutrients 2019; 11:nu11071541. [PMID: 31288415 PMCID: PMC6683014 DOI: 10.3390/nu11071541] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2019] [Revised: 06/27/2019] [Accepted: 07/04/2019] [Indexed: 12/19/2022] Open
Abstract
Several reports have indicated a possible link between decreasing plasma levels of vitamin K and bone mineral density. It has been suggested that intestinal bacteria contribute to maintenance of vitamin K. Several factors are involved in the reduction of vitamin K in patients with Crohn’s disease (CD). We aimed to assess the relationship between gut microbiota and alternative indicators of vitamin K deficiency in patients with CD. We collected the feces of 26 patients with clinically inactive CD. We extracted 16S rRNA from the intestinal bacteria in the feces and amplified it by polymerase chain reaction. The generated polymerase chain reaction product was analyzed using a 16S metagenomic approach by Illumina Miseq platform. Serum undercarboxylated osteocalcin concentration was used as an alternative indicator of vitamin K deficiency. There was a significant negative correlation between serum undercarboxylated osteocalcin and mean Chao1 index in cases of low activity. The diversity of the gut microbiota was significantly lower, and Ruminococcaceae and Lachnospiraceae were significantly decreased in the vitamin K-deficient group in comparison to the vitamin K-normal group. Taken together, these data suggested the significance of investigating the gut microbiota even in patients with clinically inactive CD for improving patients’ vitamin K status.
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Affiliation(s)
- Kohei Wagatsuma
- Department of Gastroenterology and Hepatology, Sapporo Medical University School of Medicine, Sapporo 060-8543, Japan
| | - Satoshi Yamada
- Department of Gastroenterology and Hepatology, Kyoto University Graduate School of Medicine, Kyoto 606-8507, Japan
| | - Misora Ao
- Department of Food and Nutrition, Kyoto Women's University, Kyoto 605-8501, Japan
| | - Minoru Matsuura
- Department of Gastroenterology and Hepatology, Kyoto University Graduate School of Medicine, Kyoto 606-8507, Japan
| | - Hidemi Tsuji
- Faculty of Home Economics, Kobe Women's University, Kobe 654-8585, Japan
| | - Tomoya Iida
- Department of Gastroenterology and Hepatology, Sapporo Medical University School of Medicine, Sapporo 060-8543, Japan
| | - Kentaro Miyamoto
- Tokyo R&D Center, Miyarisan Pharmaceutical Co., Ltd., Tokyo 114-0016, Japan
| | - Kentaro Oka
- Tokyo R&D Center, Miyarisan Pharmaceutical Co., Ltd., Tokyo 114-0016, Japan
| | | | - Kiyoshi Tanaka
- Faculty of Nutrition, Kobe Gakuin University, Kobe 651-2180, Japan
| | - Hiroshi Nakase
- Department of Gastroenterology and Hepatology, Sapporo Medical University School of Medicine, Sapporo 060-8543, Japan.
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15
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Oya M, Tadano Y, Takihata Y, Murakami W, Fujii S, Tamai K, Morimoto Y, Ikomi F, Tokunaga T. Effects of hyperbaric conditions on fecal microbiota. Biosci Microbiota Food Health 2018; 38:35-39. [PMID: 30705801 PMCID: PMC6343048 DOI: 10.12938/bmfh.18-016] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/26/2018] [Accepted: 08/16/2018] [Indexed: 11/15/2022]
Abstract
We aimed to determine whether the composition of the fecal microbiota changes under hyperbaric conditions. In this study, we collected fecal samples from 6 healthy divers at three points
during deep diving training (before, 2.1 MPa, end). The frequency of Clostridium cluster XVIII tended to be increased after compression. The frequencies of
Clostridium cluster IV and subcluster XIVa were inversely correlated with that of Bacteroides. The compositional changes in the fecal microbiota exhibited
interindividual variability. These findings suggest that hyperbaric conditions affect the fecal microbiota.
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Affiliation(s)
- Morihiko Oya
- Research Division, Experimental Department, Maritime Self-Defense Force Undersea Medical Center, Taura Minatocho, Yokosuka, Kanagawa 237-0071, Japan
| | - Yutaka Tadano
- Research Division, Experimental Department, Maritime Self-Defense Force Undersea Medical Center, Taura Minatocho, Yokosuka, Kanagawa 237-0071, Japan
| | - Yasuhiro Takihata
- Research Division, Experimental Department, Maritime Self-Defense Force Undersea Medical Center, Taura Minatocho, Yokosuka, Kanagawa 237-0071, Japan
| | - Wakana Murakami
- Research Division, Experimental Department, Maritime Self-Defense Force Undersea Medical Center, Taura Minatocho, Yokosuka, Kanagawa 237-0071, Japan
| | - Shigenori Fujii
- Medical Material Division, Japan Self-Defense Force Yokosuka Hospital, Yokosuka, Japan
| | - Kenji Tamai
- Research Division, Experimental Department, Maritime Self-Defense Force Undersea Medical Center, Taura Minatocho, Yokosuka, Kanagawa 237-0071, Japan
| | - Yuji Morimoto
- Department of Integrative Physiology and Bio-Nano Medicine, National Defense Medical College, Tokorozawa, Japan
| | - Fumitaka Ikomi
- National Defense Medical College Research Institute, Tokorozawa, Japan
| | - Tetsuji Tokunaga
- Research Division, Experimental Department, Maritime Self-Defense Force Undersea Medical Center, Taura Minatocho, Yokosuka, Kanagawa 237-0071, Japan
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Mishiro T, Oka K, Kuroki Y, Takahashi M, Tatsumi K, Saitoh T, Tobita H, Ishimura N, Sato S, Ishihara S, Sekine J, Wada K, Kinoshita Y. Oral microbiome alterations of healthy volunteers with proton pump inhibitor. J Gastroenterol Hepatol 2018; 33:1059-1066. [PMID: 29105152 DOI: 10.1111/jgh.14040] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/13/2017] [Revised: 10/26/2017] [Accepted: 10/26/2017] [Indexed: 12/17/2022]
Abstract
BACKGROUND AND AIM Acid suppressive agents including proton pump inhibitors (PPIs) are used as first-line treatment for various acid-related gastrointestinal disorders. Although known to profoundly reduce gastric acid production, their influence on inhibition of acid secretion as part of the function of the gastrointestinal tract microbiome remains to be elucidated. The aim of the present study was to examine the effects of PPI usage on oral and gut microbiota in healthy volunteers. METHODS Ten healthy adult volunteers receiving no medications were enrolled. We obtained fecal, saliva, and periodontal pocket fluid samples from the subjects before and after 4 weeks of once daily administrations of 20-mg esomeprazole. The effects of PPI administration on bacterial communities were investigated using a 16S rRNA gene sequencing method. RESULTS Species richness (alpha diversity) was significantly different among the salivary, periodontal pocket, and fecal samples. Furthermore, the measurements for UniFrac distances, despite inter-individual variations (beta diversity), of the microbiota structure of saliva and periodontal pocket and feces samples were clearly separated from each other. The salivary samples showed significant differences between alpha and beta diversity measurements before and after administration of the PPI for 4 weeks. Meanwhile, taxon-based analysis indicated that PPI administration raised the ratio of Streptococcus organisms in fecal samples, suggesting a potentially unfavorable effect leading to gut microbiota alteration. Moreover, alterations of the microbiota in the oral carriage microbiome along with bacterial overgrowth (Streptococcus) and decreases in distinct bacterial species (Neisseria and Veillonella) were observed. CONCLUSIONS These results suggest that PPIs cause both oral and gut microbiota alterations.
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Affiliation(s)
- Tsuyoshi Mishiro
- Department of Gastroenterology and Hepatology, Faculty of Medicine, Shimane University, Izumo, Shimane, Japan
| | - Kentaro Oka
- Tokyo R&D Center, Miyarisan Pharmaceutical Co. Ltd., Saitama, Japan
| | - Yasutoshi Kuroki
- Tokyo R&D Center, Miyarisan Pharmaceutical Co. Ltd., Saitama, Japan
| | | | - Kasumi Tatsumi
- Department of Oral and Maxillofacial Surgery, Faculty of Medicine, Shimane University, Izumo, Shimane, Japan
| | - Tsukasa Saitoh
- Department of Gastroenterology and Hepatology, Faculty of Medicine, Shimane University, Izumo, Shimane, Japan
| | - Hiroshi Tobita
- Department of Gastroenterology and Hepatology, Faculty of Medicine, Shimane University, Izumo, Shimane, Japan
| | - Norihisa Ishimura
- Department of Gastroenterology and Hepatology, Faculty of Medicine, Shimane University, Izumo, Shimane, Japan
| | - Shuichi Sato
- Division of Gastrointestinal Endoscopy, Shimane University Hospital, Izumo, Shimane, Japan
| | - Shunji Ishihara
- Department of Gastroenterology and Hepatology, Faculty of Medicine, Shimane University, Izumo, Shimane, Japan
| | - Joji Sekine
- Department of Oral and Maxillofacial Surgery, Faculty of Medicine, Shimane University, Izumo, Shimane, Japan
| | - Koichiro Wada
- Department of Pharmacology, Faculty of Medicine, Shimane University, Izumo, Shimane, Japan
| | - Yoshikazu Kinoshita
- Department of Gastroenterology and Hepatology, Faculty of Medicine, Shimane University, Izumo, Shimane, Japan
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17
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Wen Y, He Q, Ding J, Wang H, Hou Q, Zheng Y, Li C, Ma Y, Zhang H, Kwok LY. Cow, yak, and camel milk diets differentially modulated the systemic immunity and fecal microbiota of rats. Sci Bull (Beijing) 2017; 62:405-414. [PMID: 36659284 DOI: 10.1016/j.scib.2017.01.027] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2016] [Revised: 12/28/2016] [Accepted: 12/30/2016] [Indexed: 01/21/2023]
Abstract
Cow milk is most widely consumed; however, non-cattle milk has gained increasing interest because of added nutritive values. We compared the health effects of yak, cow, and camel milk in rats. By measuring several plasma immune factors, significantly more interferon-γ was detected in the camel than the yak (P=0.0020) or cow (P=0.0062) milk group. Significantly more IgM was detected in the yak milk than the control group (P=0.0071). The control group had significantly less interleukin 6 than the yak (P=0.0499) and cow (P=0.0248) milk groups. The fecal microbiota of the 144 samples comprised mainly of the Firmicutes (76.70±11.03%), Bacteroidetes (15.27±7.79%), Proteobacteria (3.61±4.34%), and Tenericutes (2.61±2.53%) phyla. Multivariate analyses revealed a mild shift in the fecal microbiota along the milk treatment. We further identified the differential microbes across the four groups. At day 14, 22 and 28 differential genera and species were identified (P=0.0000-0.0462), while 8 and 11 differential genera and species (P=0.0000-0.0013) were found at day 28. Some short-chain fatty acid and succinate producers increased, while certain health-concerned bacteria (Prevotella copri, Phascolarctobacterium faecium, and Bacteroides uniformis) decreased after 14days of yak or camel milk treatment. We demonstrated that different animal milk could confer distinctive nutritive value to the host.
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Affiliation(s)
- Yongping Wen
- Inner Mongolia Mengniu Dairy (Group) Co., Ltd, Hohhot 011500, China
| | - Qiuwen He
- Key Laboratory of Dairy Biotechnology and Engineering, Inner Mongolia Agricultural University, Hohhot 010018, China
| | - Jia Ding
- Key Laboratory of Dairy Biotechnology and Engineering, Inner Mongolia Agricultural University, Hohhot 010018, China
| | - Huiyan Wang
- Key Laboratory of Dairy Biotechnology and Engineering, Inner Mongolia Agricultural University, Hohhot 010018, China
| | - Qiangchuan Hou
- Key Laboratory of Dairy Biotechnology and Engineering, Inner Mongolia Agricultural University, Hohhot 010018, China
| | - Yi Zheng
- Key Laboratory of Dairy Biotechnology and Engineering, Inner Mongolia Agricultural University, Hohhot 010018, China
| | - Changkun Li
- Key Laboratory of Dairy Biotechnology and Engineering, Inner Mongolia Agricultural University, Hohhot 010018, China
| | - Yuzhu Ma
- Key Laboratory of Dairy Biotechnology and Engineering, Inner Mongolia Agricultural University, Hohhot 010018, China
| | - Heping Zhang
- Key Laboratory of Dairy Biotechnology and Engineering, Inner Mongolia Agricultural University, Hohhot 010018, China
| | - Lai-Yu Kwok
- Key Laboratory of Dairy Biotechnology and Engineering, Inner Mongolia Agricultural University, Hohhot 010018, China.
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18
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Iatta R, Immediato D, Puttilli MR, Danesi P, Passantino G, Parisi A, Mallia E, Otranto D, Cafarchia C. Cryptococcus neoformans in the respiratory tract of squirrels, Callosciurus finlaysonii (Rodentia, Sciuridae). Med Mycol 2015; 53:666-73. [PMID: 26229151 DOI: 10.1093/mmy/myv045] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2015] [Accepted: 05/14/2015] [Indexed: 11/13/2022] Open
Abstract
Cryptococcosis is a fungal disease acquired from the environment, for which animals may serve as sentinels for human exposure. The occurrence of Cryptococcus spp. in the respiratory tract of 125 squirrels, Callosciurus finlaysonii, trapped in Southern Italy, was assessed. Upon examination of nasal swabs and lung tissue from each individual, a total of 13 (10.4%) animals scored positive for yeasts, 7 for Cryptococcus neoformans (C.n.) (5.6%) and 6 for other yeasts (4.8%). C.n. was isolated from the nostrils and lungs, with a high population size in nostrils. Two C.n. molecular types, VNI and VNIV, were identified, with C.n. var. grubii VNI the most prevalent. Phylogenetic analyses of ITS+ and URA5 sequences revealed that C.n. isolates were genetically similar to isolates from a range of geographical areas and hosts. Results suggest that C.n. can colonize or infect the respiratory tract of C. finlaysonii. The high occurrence and level of colonization of nasal cavities might be an indicator of environmental exposure to high levels of airborne microorganism. The close phylogenetic relationship of C.n. strains from squirrels with those from human and other animal hosts suggests a potential role for these animals as "sentinels" for human exposure.
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Affiliation(s)
- Roberta Iatta
- Dipartimento di Medicina Veterinaria, Università degli Studi di Bari, Italy
| | - Davide Immediato
- Dipartimento di Medicina Veterinaria, Università degli Studi di Bari, Italy
| | | | - Patrizia Danesi
- Istituto zooprofilattico Sperimentale delle Venezie, Legnaro, Italy
| | | | - Antonio Parisi
- Experimental Zooprophylactic Institute of Apulia and Basilicata, Bari, Italy
| | - Egidio Mallia
- Parco Regionale Gallipoli Cognato e Piccole Dolomiti Lucane, Basilicata, Matera, Italy
| | - Domenico Otranto
- Dipartimento di Medicina Veterinaria, Università degli Studi di Bari, Italy
| | - Claudia Cafarchia
- Dipartimento di Medicina Veterinaria, Università degli Studi di Bari, Italy
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