1
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Moura F, Romeiro C, Petriz B, Cavichiolli N, Almeida JA, Castro A, Franco OL. Endurance exercise associated with a fructooligosaccharide diet modulates gut microbiota and increases colon absorptive area. J Gastroenterol Hepatol 2024; 39:1145-1154. [PMID: 38642000 DOI: 10.1111/jgh.16563] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/05/2023] [Revised: 03/01/2024] [Accepted: 03/25/2024] [Indexed: 04/22/2024]
Abstract
BACKGROUND AND AIM Fructooligosaccharide (FOS) supplementation can stimulate beneficial intestinal bacteria growth, but little is known about its influence on training performance. Therefore, this study analyzed FOS and exercise effects on gut microbiota and intestinal morphology of C57Bl/6 mice. METHODS Forty male mice were divided into four groups: standard diet-sedentary (SDS), standard diet-exercised (SDE), FOS supplemented (7.5% FOS)-sedentary (FDS), and FOS supplemented-exercised (FDE), n = 10 each group. Exercise training consisted of 60 min/day, 3 days/week, for 12 weeks. RESULTS SDE and FDE groups had an increase in aerobic performance compared to the pretraining period and SDS and FDS groups (P < 0.01), respectively. Groups with FOS increased colonic crypts size (P < 0.05). The FDE group presented rich microbiota (α-diversity) compared to other groups. The FDE group also acquired a greater microbial abundance (β-diversity) than other groups. The FDE group had a decrease in the Ruminococcaceae (P < 0.002) and an increase in Roseburia (P < 0.003), Enterorhabdus (P < 0.004) and Anaerotruncus (P < 0.006). CONCLUSIONS These findings suggest that aerobic exercise associated with FOS supplementation modulates gut microbiota and can increase colonic crypt size without improving endurance exercise performance.
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Affiliation(s)
- Filipe Moura
- Postgraduate Program in Physical Education, Catholic University of Brasília, Brasília, Brazil
- Laboratory of Molecular Physiology of Exercise, University Center UDF, Brasília, Brazil
- Center for Proteomic and Biochemical Analysis, Postgraduate Program in Genomic Sciences and Biotechnology, Catholic University of Brasília, Brasília, Brazil
| | - Caroline Romeiro
- Postgraduate Program in Physical Education, Catholic University of Brasília, Brasília, Brazil
| | - Bernardo Petriz
- Laboratory of Molecular Physiology of Exercise, University Center UDF, Brasília, Brazil
- Center for Proteomic and Biochemical Analysis, Postgraduate Program in Genomic Sciences and Biotechnology, Catholic University of Brasília, Brasília, Brazil
| | - Nathalia Cavichiolli
- S-Inova Biotech, Postgraduate Program in Biotechnology, Catholic University Dom Bosco, Campo Grande, Brazil
| | | | - Alinne Castro
- S-Inova Biotech, Postgraduate Program in Biotechnology, Catholic University Dom Bosco, Campo Grande, Brazil
| | - Octavio L Franco
- Postgraduate Program in Physical Education, Catholic University of Brasília, Brasília, Brazil
- Center for Proteomic and Biochemical Analysis, Postgraduate Program in Genomic Sciences and Biotechnology, Catholic University of Brasília, Brasília, Brazil
- S-Inova Biotech, Postgraduate Program in Biotechnology, Catholic University Dom Bosco, Campo Grande, Brazil
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2
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Afsar B, Afsar RE, Lentine KL. The impact of sodium-glucose cotransporter inhibitors on gut microbiota: a scoping review. J Diabetes Metab Disord 2024; 23:497-508. [PMID: 38932911 PMCID: PMC11196485 DOI: 10.1007/s40200-024-01435-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/07/2024] [Accepted: 04/10/2024] [Indexed: 06/28/2024]
Abstract
Studies consistently showed that sodium-glucose cotransporter inhibitors (SGLTi) have cardiovascular and renal benefits, independent of their glucose lowering effects. Recent studies showed that SGLTi might influence gut microbiota. We performed a narrative review of publications focusing on use of SGLTi and changes in gut microbiota. Most studies showed that use of SGLTi re-shapes gut microbiota. These studies are heterogeneous regarding in study designs, doses and types of drugs used (SGLT1i vs. SGLT2i, or SGLT1/2i in combination) and the methods used to determine gut microbiota. However, existing data showed that SGLTi might alter food fermentation and gut permeability, which might translate into clinical outcomes. Thus the objective of this review is to summarize and discuss the updated data regarding SGLTi and changes in gut microbiota for the first time and suggest further study points that needs to be discovered. Graphical Abstract
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Affiliation(s)
- Baris Afsar
- Suleyman Demirel University, School of Medicine, Department of Nephrology, Isparta, Turkey
| | - Rengin Elsurer Afsar
- Suleyman Demirel University, School of Medicine, Department of Nephrology, Isparta, Turkey
- Saint Louis University, School of Medicine, Division of Nephrology, St. Louis, MO USA
| | - Krista L. Lentine
- Saint Louis University, School of Medicine, Division of Nephrology, St. Louis, MO USA
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3
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Otaru N, Kourouma L, Pugin B, Constancias F, Braegger C, Mansuy IM, Lacroix C. Transgenerational effects of early life stress on the fecal microbiota in mice. Commun Biol 2024; 7:670. [PMID: 38822061 PMCID: PMC11143345 DOI: 10.1038/s42003-024-06279-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2023] [Accepted: 05/02/2024] [Indexed: 06/02/2024] Open
Abstract
Stress in early life can affect the progeny and increase the risk to develop psychiatric and cardiometabolic diseases across generations. The cross-generational effects of early life stress have been modeled in mice and demonstrated to be associated with epigenetic factors in the germline. While stress is known to affect gut microbial features, whether its effects can persist across life and be passed to the progeny is not well defined. Here we show that early postnatal stress in mice shifts the fecal microbial composition (binary Jaccard index) throughout life, including abundance of eight amplicon sequencing variants (ASVs). Further effects on fecal microbial composition, structure (weighted Jaccard index), and abundance of 16 ASVs are detected in the progeny across two generations. These effects are not accompanied by changes in bacterial metabolites in any generation. These results suggest that changes in the fecal microbial community induced by early life traumatic stress can be perpetuated from exposed parent to the offspring.
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Affiliation(s)
- Nize Otaru
- Nutrition Research Unit, University Children's Hospital Zürich, Zürich, Switzerland
- Department of Health Sciences and Technology, Laboratory of Food Biotechnology, ETH Zürich, Zürich, Switzerland
| | - Lola Kourouma
- Department of Health Science and Technology of the ETH Zurich, Laboratory of Neuroepigenetics, Brain Research Institute, Medical Faculty of the University of Zurich, and Institute for Neuroscience, Zurich, Switzerland
- Center for Neuroscience Zürich, ETH and University Zürich, Zurich, Switzerland
| | - Benoit Pugin
- Department of Health Sciences and Technology, Laboratory of Food Biotechnology, ETH Zürich, Zürich, Switzerland
| | - Florentin Constancias
- Department of Health Sciences and Technology, Laboratory of Food Biotechnology, ETH Zürich, Zürich, Switzerland
| | - Christian Braegger
- Nutrition Research Unit, University Children's Hospital Zürich, Zürich, Switzerland
| | - Isabelle M Mansuy
- Department of Health Science and Technology of the ETH Zurich, Laboratory of Neuroepigenetics, Brain Research Institute, Medical Faculty of the University of Zurich, and Institute for Neuroscience, Zurich, Switzerland.
- Center for Neuroscience Zürich, ETH and University Zürich, Zurich, Switzerland.
| | - Christophe Lacroix
- Department of Health Sciences and Technology, Laboratory of Food Biotechnology, ETH Zürich, Zürich, Switzerland.
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4
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Hayes AMR, Lauer LT, Kao AE, Sun S, Klug ME, Tsan L, Rea JJ, Subramanian KS, Gu C, Tanios N, Ahuja A, Donohue KN, Décarie-Spain L, Fodor AA, Kanoski SE. Western diet consumption impairs memory function via dysregulated hippocampus acetylcholine signaling. Brain Behav Immun 2024; 118:408-422. [PMID: 38461956 PMCID: PMC11033683 DOI: 10.1016/j.bbi.2024.03.015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/22/2023] [Revised: 02/16/2024] [Accepted: 03/07/2024] [Indexed: 03/12/2024] Open
Abstract
Western diet (WD) consumption during early life developmental periods is associated with impaired memory function, particularly for hippocampus (HPC)-dependent processes. We developed an early life WD rodent model associated with long-lasting HPC dysfunction to investigate the neurobiological mechanisms mediating these effects. Rats received either a cafeteria-style WD (ad libitum access to various high-fat/high-sugar foods; CAF) or standard healthy chow (CTL) during the juvenile and adolescent stages (postnatal days 26-56). Behavioral and metabolic assessments were performed both before and after a healthy diet intervention period beginning at early adulthood. Results revealed HPC-dependent contextual episodic memory impairments in CAF rats that persisted despite the healthy diet intervention. Given that dysregulated HPC acetylcholine (ACh) signaling is associated with memory impairments in humans and animal models, we examined protein markers of ACh tone in the dorsal HPC (HPCd) in CAF and CTL rats. Results revealed significantly lower protein levels of vesicular ACh transporter in the HPCd of CAF vs. CTL rats, indicating chronically reduced ACh tone. Using intensity-based ACh sensing fluorescent reporter (iAChSnFr) in vivo fiber photometry targeting the HPCd, we next revealed that ACh release during object-contextual novelty recognition was highly predictive of memory performance and was disrupted in CAF vs. CTL rats. Neuropharmacological results showed that alpha 7 nicotinic ACh receptor agonist infusion in the HPCd during training rescued memory deficits in CAF rats. Overall, these findings reveal a functional connection linking early life WD intake with long-lasting dysregulation of HPC ACh signaling, thereby identifying an underlying mechanism for WD-associated memory impairments.
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Affiliation(s)
- Anna M R Hayes
- Human and Evolutionary Biology Section, Department of Biological Sciences, University of Southern California, Los Angeles, CA, USA
| | - Logan Tierno Lauer
- Human and Evolutionary Biology Section, Department of Biological Sciences, University of Southern California, Los Angeles, CA, USA
| | - Alicia E Kao
- Human and Evolutionary Biology Section, Department of Biological Sciences, University of Southern California, Los Angeles, CA, USA
| | - Shan Sun
- Department of Bioinformatics and Genomics, University of North Carolina at Charlotte, Charlotte, NC, USA
| | - Molly E Klug
- Human and Evolutionary Biology Section, Department of Biological Sciences, University of Southern California, Los Angeles, CA, USA
| | - Linda Tsan
- Human and Evolutionary Biology Section, Department of Biological Sciences, University of Southern California, Los Angeles, CA, USA; Neuroscience Graduate Program, University of Southern California, Los Angeles, CA, USA
| | - Jessica J Rea
- Human and Evolutionary Biology Section, Department of Biological Sciences, University of Southern California, Los Angeles, CA, USA; Neuroscience Graduate Program, University of Southern California, Los Angeles, CA, USA
| | - Keshav S Subramanian
- Human and Evolutionary Biology Section, Department of Biological Sciences, University of Southern California, Los Angeles, CA, USA; Neuroscience Graduate Program, University of Southern California, Los Angeles, CA, USA
| | - Cindy Gu
- Human and Evolutionary Biology Section, Department of Biological Sciences, University of Southern California, Los Angeles, CA, USA
| | - Natalie Tanios
- Human and Evolutionary Biology Section, Department of Biological Sciences, University of Southern California, Los Angeles, CA, USA
| | - Arun Ahuja
- Human and Evolutionary Biology Section, Department of Biological Sciences, University of Southern California, Los Angeles, CA, USA
| | - Kristen N Donohue
- Human and Evolutionary Biology Section, Department of Biological Sciences, University of Southern California, Los Angeles, CA, USA
| | - Léa Décarie-Spain
- Human and Evolutionary Biology Section, Department of Biological Sciences, University of Southern California, Los Angeles, CA, USA
| | - Anthony A Fodor
- Department of Bioinformatics and Genomics, University of North Carolina at Charlotte, Charlotte, NC, USA
| | - Scott E Kanoski
- Human and Evolutionary Biology Section, Department of Biological Sciences, University of Southern California, Los Angeles, CA, USA; Neuroscience Graduate Program, University of Southern California, Los Angeles, CA, USA.
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5
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Widmer G, Creasey HN. Fecal microbiota impacts development of Cryptosporidium parvum in the mouse. Sci Rep 2024; 14:5498. [PMID: 38448682 PMCID: PMC10917813 DOI: 10.1038/s41598-024-56184-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2023] [Accepted: 03/03/2024] [Indexed: 03/08/2024] Open
Abstract
The dependence of Cryptosporidium parasites on host cell metabolites suggests that the development of nutritional interventions to limit parasite proliferation should be feasible. Based on this concept, we are testing dietary interventions to affect the enterocytes' metabolism in a manner that limits intracellular multiplication of the parasite. We hypothesize that changes in the metabolic pathways encoded by the gastro-intestinal tract microbiota may restrict parasite proliferation. To identify taxonomic and metabolic features of the microbiota associated with severity of cryptosporidiosis, as determined by estimating oocyst output, we characterized the fecal microbiota from mice experimentally infected with Cryptosporidium parvum. To eliminate the confounding effect of the interaction between co-housed mice, as well as facilitate the identification of microbiota markers associated with severity of cryptosporidiosis, fecal microbiota from individually caged mice were analyzed. Variation partitioning analysis applied to 16S sequence data from 25 mice belonging to four experiments shows that experiment was by far the biggest source of microbiota variation. Severity of cryptosporidiosis explained a smaller, though significant, fraction of microbiota variation. Notably, this effect was significant in the pre-patent phase of the infection, before mice excreted oocysts. These results are consistent with the pre-patent intestinal microbiota having a modest, but measurable, effect on cryptosporidiosis.
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Affiliation(s)
- Giovanni Widmer
- Cummings School of Veterinary Medicine at Tufts University, 200 Westboro Road, North Grafton, MA, 01536, USA.
| | - Hannah N Creasey
- Cummings School of Veterinary Medicine at Tufts University, 200 Westboro Road, North Grafton, MA, 01536, USA
- Department of Immunology, Harvard Medical School, 77 Avenue Louis Pasteur, Boston, MA, 02115, USA
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6
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Mortazavi SMJ, Said-Salman I, Mortazavi AR, El Khatib S, Sihver L. How the adaptation of the human microbiome to harsh space environment can determine the chances of success for a space mission to Mars and beyond. Front Microbiol 2024; 14:1237564. [PMID: 38390219 PMCID: PMC10881706 DOI: 10.3389/fmicb.2023.1237564] [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: 08/22/2023] [Accepted: 12/05/2023] [Indexed: 02/24/2024] Open
Abstract
The ability of human cells to adapt to space radiation is essential for the well-being of astronauts during long-distance space expeditions, such as voyages to Mars or other deep space destinations. However, the adaptation of the microbiomes should not be overlooked. Microorganisms inside an astronaut's body, or inside the space station or other spacecraft, will also be exposed to radiation, which may induce resistance to antibiotics, UV, heat, desiccation, and other life-threatening factors. Therefore, it is essential to consider the potential effects of radiation not only on humans but also on their microbiomes to develop effective risk reduction strategies for space missions. Studying the human microbiome in space missions can have several potential benefits, including but not limited to a better understanding of the major effects space travel has on human health, developing new technologies for monitoring health and developing new radiation therapies and treatments. While radioadaptive response in astronauts' cells can lead to resistance against high levels of space radiation, radioadaptive response in their microbiome can lead to resistance against UV, heat, desiccation, antibiotics, and radiation. As astronauts and their microbiomes compete to adapt to the space environment. The microorganisms may emerge as the winners, leading to life-threatening situations due to lethal infections. Therefore, understanding the magnitude of the adaptation of microorganisms before launching a space mission is crucial to be able to develop effective strategies to mitigate the risks associated with radiation exposure. Ensuring the safety and well-being of astronauts during long-duration space missions and minimizing the risks linked with radiation exposure can be achieved by adopting this approach.
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Affiliation(s)
- Seyed Mohammad Javad Mortazavi
- Ionizing and non-ionizing radiation protection research center (INIRPRC), Shiraz University of Medical Sciences, Shiraz, Iran
| | - Ilham Said-Salman
- Department of Biological and Chemical Sciences, School of Arts & Sciences, Lebanese International University, Saida, Lebanon
- Department of Biological and Chemical Sciences, International University of Beirut, Beirut, Lebanon
| | | | - Sami El Khatib
- Department of Biomedical Sciences, School of Arts and Sciences, Lebanese International University, Beirut, Lebanon
- Center for Applied Mathematics and Bioinformatics (CAMB) at Gulf University for Science and Technology, Kuwait City, Kuwait
| | - Lembit Sihver
- Department of Radiation Dosimetry, Nuclear Physics Institute (NPI) of the Czech Academy of Sciences (CAS), Prague, Czechia
- Department of Radiation Physics, Technische Universität Wien Atominstitut, Vienna, Austria
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7
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Kline SN, Orlando NA, Lee AJ, Wu MJ, Zhang J, Youn C, Feller LE, Pontaza C, Dikeman D, Limjunyawong N, Williams KL, Wang Y, Cihakova D, Jacobsen EA, Durum SK, Garza LA, Dong X, Archer NK. Staphylococcus aureus proteases trigger eosinophil-mediated skin inflammation. Proc Natl Acad Sci U S A 2024; 121:e2309243121. [PMID: 38289950 PMCID: PMC10861893 DOI: 10.1073/pnas.2309243121] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2023] [Accepted: 12/22/2023] [Indexed: 02/01/2024] Open
Abstract
Staphylococcus aureus skin colonization and eosinophil infiltration are associated with many inflammatory skin disorders, including atopic dermatitis, bullous pemphigoid, Netherton's syndrome, and prurigo nodularis. However, whether there is a relationship between S. aureus and eosinophils and how this interaction influences skin inflammation is largely undefined. We show in a preclinical mouse model that S. aureus epicutaneous exposure induced eosinophil-recruiting chemokines and eosinophil infiltration into the skin. Remarkably, we found that eosinophils had a comparable contribution to the skin inflammation as T cells, in a manner dependent on eosinophil-derived IL-17A and IL-17F production. Importantly, IL-36R signaling induced CCL7-mediated eosinophil recruitment to the inflamed skin. Last, S. aureus proteases induced IL-36α expression in keratinocytes, which promoted infiltration of IL-17-producing eosinophils. Collectively, we uncovered a mechanism for S. aureus proteases to trigger eosinophil-mediated skin inflammation, which has implications in the pathogenesis of inflammatory skin diseases.
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Affiliation(s)
- Sabrina N. Kline
- Department of Dermatology, Johns Hopkins School of Medicine, Baltimore, MD21287
| | - Nicholas A. Orlando
- Department of Dermatology, Johns Hopkins School of Medicine, Baltimore, MD21287
| | - Alex J. Lee
- Department of Oncology, Bloomberg Kimmel Institute for Cancer Immunotherapy, Johns Hopkins University School of Medicine, Baltimore, MD21205
| | - Meng-Jen Wu
- Department of Dermatology, Johns Hopkins School of Medicine, Baltimore, MD21287
| | - Jing Zhang
- Department of Dermatology, Johns Hopkins School of Medicine, Baltimore, MD21287
| | - Christine Youn
- Department of Dermatology, Johns Hopkins School of Medicine, Baltimore, MD21287
| | - Laine E. Feller
- Department of Dermatology, Johns Hopkins School of Medicine, Baltimore, MD21287
| | - Cristina Pontaza
- Department of Dermatology, Johns Hopkins School of Medicine, Baltimore, MD21287
| | - Dustin Dikeman
- Department of Dermatology, Johns Hopkins School of Medicine, Baltimore, MD21287
| | - Nathachit Limjunyawong
- Center of Research Excellence in Allergy and Immunology, Research Department, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok10700, Thailand
| | - Kaitlin L. Williams
- Department of Dermatology, Johns Hopkins School of Medicine, Baltimore, MD21287
| | - Yu Wang
- Department of Dermatology, Johns Hopkins School of Medicine, Baltimore, MD21287
| | - Daniela Cihakova
- Department of Pathology, Johns Hopkins School of Medicine, Baltimore, MD21287
| | - Elizabeth A. Jacobsen
- Division of Allergy, Asthma and Clinical Immunology, Mayo Clinic Arizona, Scottsdale, AZ85259
| | - Scott K. Durum
- Cancer Innovation Laboratory, Center for Cancer Research, National Cancer Institute, NIH, Frederick, MD21702
| | - Luis A. Garza
- Department of Dermatology, Johns Hopkins School of Medicine, Baltimore, MD21287
| | - Xinzhong Dong
- HHMI, Johns Hopkins University School of Medicine, Baltimore, MD21205
- Solomon H. Snyder Department of Neuroscience, Johns Hopkins University School of Medicine, Baltimore, MD21205
| | - Nathan K. Archer
- Department of Dermatology, Johns Hopkins School of Medicine, Baltimore, MD21287
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8
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Carson MD, Westwater C, Novince CM. Adolescence and the Microbiome: Implications for Healthy Growth and Maturation. THE AMERICAN JOURNAL OF PATHOLOGY 2023; 193:1900-1909. [PMID: 37673331 PMCID: PMC10699129 DOI: 10.1016/j.ajpath.2023.07.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/11/2023] [Revised: 07/19/2023] [Accepted: 07/26/2023] [Indexed: 09/08/2023]
Abstract
The gut microbiota was initially thought to develop into a stable, adult-like profile during early postnatal life. The formation of the gut microbiota during early life has been shown to contribute to healthy growth and has lifelong implications for host health. Adolescence, the developmental period between childhood and adulthood, is a critical window for healthy growth and maturation. The composition of the gut microbiota in adolescents is distinct from that of children and adults, which supports the premise that the gut microbiota continues to develop during adolescence toward an adult-like profile. Research has begun to shift its focus from understanding the gut microbiome at the extremes of the life span to evaluating the importance of the gut microbiome during adolescence and its role in healthy development. This article provides an overview of adolescent development, host-microbiota interactions, and experimental models used to discern effects of gut microbiota on health and disease. Herein, the role of the gut microbiota is reviewed as it relates to adolescent: i) brain development, cognition, and behavior; ii) metabolism and adiposity; and iii) skeletal growth and bone mass accrual. Future directions are addressed, including omics investigations defining mechanisms through which the gut microbiota influences adolescent development. Furthermore, we discuss advancing noninvasive interventions targeting the adolescent gut microbiota that could be employed to support healthy growth and maturation.
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Affiliation(s)
- Matthew D Carson
- Departments of Oral Health Sciences, College of Dental Medicine, Medical University of South Carolina, Charleston, South Carolina
| | - Caroline Westwater
- Departments of Oral Health Sciences, College of Dental Medicine, Medical University of South Carolina, Charleston, South Carolina; Department of Microbiology and Immunology, College of Medicine, Medical University of South Carolina, Charleston, South Carolina
| | - Chad M Novince
- Departments of Oral Health Sciences, College of Dental Medicine, Medical University of South Carolina, Charleston, South Carolina; Division of Endocrinology, Department of Pediatrics, College of Medicine, Medical University of South Carolina, Charleston, South Carolina; Division of Periodontics, Department of Stomatology, College of Dental Medicine, Medical University of South Carolina, Charleston, South Carolina.
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9
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Deshayes S, Baugé C, Dupont PA, Simard C, Rida H, de Boysson H, Manrique A, Aouba A. [ 18F]FDG PET-MR characterization of aortitis in the IL1rn -/- mouse model of giant-cell arteritis. EJNMMI Res 2023; 13:103. [PMID: 38019303 PMCID: PMC10687326 DOI: 10.1186/s13550-023-01039-5] [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: 07/07/2023] [Accepted: 10/01/2023] [Indexed: 11/30/2023] Open
Abstract
BACKGROUND Metabolic imaging is routinely used to demonstrate aortitis in patients with giant-cell arteritis. We aimed to investigate the preclinical model of aortitis in BALB/c IL1rn-/- mice using [18F]fluorodeoxyglucose ([18F]FDG) positron emission tomography-magnetic resonance (PET-MR), gamma counting and immunostaining. We used 15 first-generation specific and opportunistic pathogen-free (SOPF) 9-week-old IL1rn-/- mice, 15 wild-type BALB/cAnN mice and 5 s-generation specific pathogen-free (SPF) 9-week-old IL1rn-/-. Aortic [18F]FDG uptake was assessed as the target-to-background ratio (TBR) using time-of-flight MR angiography as vascular landmarks. RESULTS [18F]FDG uptake measured by PET or gamma counting was similar in the first-generation SOPF IL1rn-/- mice and the wild-type group (p > 0.05). However, the first-generation IL1rn-/- mice exhibited more interleukin-1β (p = 0.021)- and interleukin-6 (p = 0.019)-positive cells within the abdominal aorta than the wild-type mice. In addition, the second-generation SPF group exhibited significantly higher TBR (p = 0.0068) than the wild-type mice on the descending thoracic aorta, unlike the first-generation SOPF IL1rn-/- mice. CONCLUSIONS In addition to the involvement of interleukin-1β and -6 in IL1rn-/- mouse aortitis, this study seems to validate [18F]FDG PET-MR as a useful tool for noninvasive monitoring of aortitis in this preclinical model.
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Affiliation(s)
- Samuel Deshayes
- Department of Internal Medicine and Clinical Immunology, Normandie University, UNICAEN, CHU de Caen Normandie - Université Basse Normandie, Avenue de la Côte de Nacre, 14000, CAEN, France.
- Normandie University, UNICAEN, CHU de Caen Normandie, UR4650 PSIR, Caen, France.
| | - Caroline Baugé
- Normandie University, UNICAEN, CHU de Caen Normandie, UR4650 PSIR, Caen, France
| | | | - Christophe Simard
- Normandie University, UNICAEN, CHU de Caen Normandie, UR4650 PSIR, Caen, France
| | - Hanan Rida
- Normandie University, UNICAEN, CHU de Caen Normandie, UR4650 PSIR, Caen, France
| | - Hubert de Boysson
- Department of Internal Medicine and Clinical Immunology, Normandie University, UNICAEN, CHU de Caen Normandie - Université Basse Normandie, Avenue de la Côte de Nacre, 14000, CAEN, France
- Normandie University, UNICAEN, CHU de Caen Normandie, UR4650 PSIR, Caen, France
| | - Alain Manrique
- Normandie University, UNICAEN, CHU de Caen Normandie, UR4650 PSIR, Caen, France
- Department of Nuclear Medicine, Normandie University, UNICAEN, CHU de Caen Normandie, Caen, France
| | - Achille Aouba
- Department of Internal Medicine and Clinical Immunology, Normandie University, UNICAEN, CHU de Caen Normandie - Université Basse Normandie, Avenue de la Côte de Nacre, 14000, CAEN, France.
- Normandie University, UNICAEN, CHU de Caen Normandie, UR4650 PSIR, Caen, France.
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10
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Shah T, Hou Y, Jiang J, Shah Z, Wang Y, Li Q, Xu X, Wang Y, Wang B, Xia X. Comparative analysis of the intestinal microbiome in Rattus norvegicus from different geographies. Front Microbiol 2023; 14:1283453. [PMID: 38029126 PMCID: PMC10655115 DOI: 10.3389/fmicb.2023.1283453] [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: 08/26/2023] [Accepted: 10/06/2023] [Indexed: 12/01/2023] Open
Abstract
Rat species Rattus norvegicus, also known as the brown street rat, is the most abundant mammal after humans in urban areas, where they co-exist with humans and domestic animals. The reservoir role of R. norvegicus of zoonotic pathogens in cities among rodent-borne diseases that could endanger the lives of humans and other mammals. Therefore, understanding the normal microbiome of R. norvegicus is crucial for understanding and preventing zoonotic pathogen transmission to humans and animals. We investigated the intestinal microbiome of free-living R. norvegicus collected from the Ruili, Nujiang, and Lianhe regions of Yunnan, China, using 16S rRNA gene sequence analysis. Proteobacteria, followed by Firmicutes, and Bacteroidetes were abundant in the intestines of R. norvegicus; however, bacterial compositions varied significantly between samples from different locations. Following a similar trend, Gammaproteobacteria, Bacilli, and Clostridia were among the top bacterial classes in most intestinal samples. The situation differed slightly for the Lianhe and Nujiang samples, although Phyla Bacteroidota and Spirochaetota were most prevalent. The Alpha diversity, Chao1, and Simpson indexes revealed microbial richness among the R. norvegicus samples. A slight variation was observed among the samples collected from Ruili, Nujiang, and Lianhe. At species levels, several opportunistic and zoonotic bacterial pathogens, including Lactococcus garvieae, Uruburuella suis, Bartonella australis, Clostridium perfringens, Streptococcus azizii, Vibrio vulnificus, etc., were revealed in the R. norvegicus intestines, implying the need for a regular survey to monitor and control rodent populations. In conclusion, we explored diverse microbial communities in R. norvegicus intestines captured from different regions. Further, we identified several opportunistic and potential bacterial pathogens, which still need to be tested for their underlying pathogenesis. The findings of our current study should be considered a warning to the health authorities to implement rat control and surveillance strategies globally.
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Affiliation(s)
- Taif Shah
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming, Yunnan, China
| | - Yutong Hou
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming, Yunnan, China
| | - Jinyong Jiang
- Yunnan International Joint Laboratory of Vector Biology and Control & Yunnan Provincial Key Laboratory of Vector-Borne Diseases Control and Research of Yunnan Institute of Parasitic Diseases, Yunnan, China
| | - Zahir Shah
- College of Veterinary Sciences, The University of Agriculture, Peshawar, Pakistan
| | - Yuhan Wang
- Research Institute of Forest Protection, Yunnan Academy of Forestry and Grassland, Kunming, Yunnan, China
| | - Qian Li
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming, Yunnan, China
| | - Xiang Xu
- Yunnan International Joint Laboratory of Vector Biology and Control & Yunnan Provincial Key Laboratory of Vector-Borne Diseases Control and Research of Yunnan Institute of Parasitic Diseases, Yunnan, China
| | - Yixuan Wang
- Research Institute of Forest Protection, Yunnan Academy of Forestry and Grassland, Kunming, Yunnan, China
| | - Binghui Wang
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming, Yunnan, China
| | - Xueshan Xia
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming, Yunnan, China
- School of Public Health, Kunming Medical University, Kunming, Yunnan, China
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11
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Bak ST, Haupt-Jorgensen M, Dudele A, Wegener G, Wang T, Nielsen AL, Lund S. The anti-inflammatory agent 5-ASA reduces the level of specific tsRNAs in sperm cells of high-fat fed C57BL/6J mouse sires and improves glucose tolerance in female offspring. J Diabetes Complications 2023; 37:108563. [PMID: 37499293 DOI: 10.1016/j.jdiacomp.2023.108563] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/14/2023] [Revised: 06/28/2023] [Accepted: 07/20/2023] [Indexed: 07/29/2023]
Abstract
INTRODUCTION The prevalence of obesity and associated comorbidities have increased to epidemic proportions globally. Paternal obesity is an independent risk factor for developing obesity and type 2 diabetes in the following generation, and growing evidence suggests epigenetic inheritance as a mechanism for this predisposition. How and why obesity induces epigenetic changes in sperm cells remain to be clarified in detail. Yet, recent studies show that alterations in sperm content of transfer RNA-derived small RNAs (tsRNAs) can transmit the effects of paternal obesity to offspring. Obesity is closely associated with low-grade chronic inflammation. Thus, we evaluated whether the anti-inflammatory agent 5-aminosalicylic acid (5-ASA) could intervene in the transmission of epigenetic inheritance of paternal obesity by reducing the inflammatory state in obese fathers. METHODS Male C57BL/6JBomTac mice were either fed a high-fat diet or a high-fat diet with 5-ASA for ten weeks before mating. The offspring metabolic phenotype was evaluated, and spermatozoa from sires were isolated for assessment of specific tsRNAs levels. RESULTS 5-ASA intervention reduced the levels of Glu-CTC tsRNAs in sperm cells and improved glucose tolerance in female offspring fed a chow diet. Paternal high-fat diet-induced obesity per se had only a moderate impact on the metabolic phenotype of both male and female offspring in our setting. CONCLUSION The results indicate that the low-grade inflammatory response associated with obesity may be an important factor in epigenetic inheritance of paternal obesity.
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Affiliation(s)
| | - Martin Haupt-Jorgensen
- The Bartholin Institute, Department of Pathology, Rigshospitalet, 2200 Copenhagen N, Denmark.
| | - Anete Dudele
- Department of Clinical Medicine, Center of Functionally Integrative Neuroscience, Aarhus University, 8200 Aarhus, Denmark
| | - Gregers Wegener
- Department of Clinial Medicine, Translational Neuropsychiatry Unit, Aarhus University, 8000 Aarhus, Denmark; Center of Excellence for Pharmaceutical Sciences, North-West University, Potchefstroom, South Africa
| | - Tobias Wang
- Department of Bioscience, Section for Zoophysiology, Aarhus University, 8000 Aarhus, Denmark
| | | | - Sten Lund
- Department of Internal Medicine and Endocrinology, Aarhus University Hospital, 8200 Aarhus N, Denmark; Steno Diabetes Center Aarhus, Aarhus University Hospital, 8200 Aarhus N, Denmark
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Hayes AMR, Lauer LT, Kao AE, Sun S, Klug ME, Tsan L, Rea JJ, Subramanian KS, Gu C, Tanios N, Ahuja A, Donohue KN, Décarie-Spain L, Fodor AA, Kanoski SE. Western diet consumption impairs memory function via dysregulated hippocampus acetylcholine signaling. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.07.21.550120. [PMID: 37546790 PMCID: PMC10401939 DOI: 10.1101/2023.07.21.550120] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/08/2023]
Abstract
Western diet (WD) consumption during development yields long-lasting memory impairments, yet the underlying neurobiological mechanisms remain elusive. Here we developed an early life WD rodent model to evaluate whether dysregulated hippocampus (HPC) acetylcholine (ACh) signaling, a pathology associated with memory impairment in human dementia, is causally-related to WD-induced cognitive impairment. Rats received a cafeteria-style WD (access to various high-fat/high-sugar foods; CAF) or healthy chow (CTL) during the juvenile and adolescent periods (postnatal days 26-56). Behavioral, metabolic, and microbiome assessments were performed both before and after a 30-day healthy diet intervention beginning at early adulthood. Results revealed CAF-induced HPC-dependent contextual episodic memory impairments that persisted despite healthy diet intervention, whereas CAF was not associated with long-term changes in body weight, body composition, glucose tolerance, anxiety-like behavior, or gut microbiome. HPC immunoblot analyses after the healthy diet intervention identified reduced levels of vesicular ACh transporter in CAF vs. CTL rats, indicative of chronically reduced HPC ACh tone. To determine whether these changes were functionally related to memory impairments, we evaluated temporal HPC ACh binding via ACh-sensing fluorescent reporter in vivo fiber photometry during memory testing, as well as whether the memory impairments could be rescued pharmacologically. Results revealed dynamic HPC ACh binding during object-contextual novelty recognition was highly predictive of memory performance and was disrupted in CAF vs. CTL rats. Further, HPC alpha-7 nicotinic receptor agonist infusion during consolidation rescued memory deficits in CAF rats. Overall, these findings identify dysregulated HPC ACh signaling as a mechanism underlying early life WD-associated memory impairments.
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Affiliation(s)
- Anna M R Hayes
- Human and Evolutionary Biology Section, Department of Biological Sciences, University of Southern California, Los Angeles, CA, USA
| | - Logan Tierno Lauer
- Human and Evolutionary Biology Section, Department of Biological Sciences, University of Southern California, Los Angeles, CA, USA
| | - Alicia E Kao
- Human and Evolutionary Biology Section, Department of Biological Sciences, University of Southern California, Los Angeles, CA, USA
| | - Shan Sun
- Department of Bioinformatics and Genomics, University of North Carolina at Charlotte, Charlotte, NC, USA
| | - Molly E Klug
- Human and Evolutionary Biology Section, Department of Biological Sciences, University of Southern California, Los Angeles, CA, USA
| | - Linda Tsan
- Human and Evolutionary Biology Section, Department of Biological Sciences, University of Southern California, Los Angeles, CA, USA
- Neuroscience Graduate Program, University of Southern California, Los Angeles, CA, USA
| | - Jessica J Rea
- Human and Evolutionary Biology Section, Department of Biological Sciences, University of Southern California, Los Angeles, CA, USA
- Neuroscience Graduate Program, University of Southern California, Los Angeles, CA, USA
| | - Keshav S Subramanian
- Human and Evolutionary Biology Section, Department of Biological Sciences, University of Southern California, Los Angeles, CA, USA
- Neuroscience Graduate Program, University of Southern California, Los Angeles, CA, USA
| | - Cindy Gu
- Human and Evolutionary Biology Section, Department of Biological Sciences, University of Southern California, Los Angeles, CA, USA
| | - Natalie Tanios
- Human and Evolutionary Biology Section, Department of Biological Sciences, University of Southern California, Los Angeles, CA, USA
| | - Arun Ahuja
- Human and Evolutionary Biology Section, Department of Biological Sciences, University of Southern California, Los Angeles, CA, USA
| | - Kristen N Donohue
- Human and Evolutionary Biology Section, Department of Biological Sciences, University of Southern California, Los Angeles, CA, USA
| | - Léa Décarie-Spain
- Human and Evolutionary Biology Section, Department of Biological Sciences, University of Southern California, Los Angeles, CA, USA
| | - Anthony A Fodor
- Department of Bioinformatics and Genomics, University of North Carolina at Charlotte, Charlotte, NC, USA
| | - Scott E Kanoski
- Human and Evolutionary Biology Section, Department of Biological Sciences, University of Southern California, Los Angeles, CA, USA
- Neuroscience Graduate Program, University of Southern California, Los Angeles, CA, USA
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13
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Hylander BL, Qiao G, Cortes Gomez E, Singh P, Repasky EA. Housing temperature plays a critical role in determining gut microbiome composition in research mice: Implications for experimental reproducibility. Biochimie 2023; 210:71-81. [PMID: 36693616 PMCID: PMC10953156 DOI: 10.1016/j.biochi.2023.01.016] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2022] [Revised: 01/03/2023] [Accepted: 01/20/2023] [Indexed: 01/22/2023]
Abstract
Preclinical mouse models are widely used for studying mechanisms of disease and responses to therapeutics, however there is concern about the lack of experimental reproducibility and failure to predict translational success. The gut microbiome has emerged as a regulator of metabolism and immunological processes in health and disease. The gut microbiome of mice differs by supplier and this affects experimental outcomes. We have previously reported that the mandated, mildly cool housing temperature for research mice (22°-26 °C) induces chronic adrenergic stress which suppresses anti-tumor immunity and promotes tumor growth compared to thermoneutral housing (30 °C). Therefore, we wondered how housing temperature affects the microbiome. Here, we demonstrate that the gut microbiome of BALB/c mice is easily modulated by a few degrees difference in temperature. Our results reveal significant differences between the gut microbiome of mice housed at 22°-23 °C vs. 30 °C. Although the genera vary, we consistently observed an enrichment of members of the family Lachnospiraceae when mice are housed at 22°-23 °C. These findings demonstrate that adrenergic stress and need for increased energy harvest to support thermogenesis, in addition to other factors such as diet, modulates the gut microbiome and this could be one mechanism by which housing temperature affects experimental outcomes. Additionally, tumor growth in mice housed at 30 °C also increases the proportion of Lachnospiraceae. The idea that stress can alter the gut microbiome and cause differences in experimental outcomes is applicable to mouse studies in general and is a variable that has significant potential to affect experimental reproducibility.
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Affiliation(s)
- Bonnie L Hylander
- Department of Immunology, Roswell Park Comprehensive Cancer Center, Elm & Carlton streets, Buffalo, NY, 14263, USA.
| | - Guanxi Qiao
- Department of Immunology, Roswell Park Comprehensive Cancer Center, Elm & Carlton streets, Buffalo, NY, 14263, USA.
| | - Eduardo Cortes Gomez
- Department of Biostatistics & Bioinformatics, Roswell Park Comprehensive Cancer Center, Elm & Carlton streets, Buffalo, NY, 14263, USA.
| | - Prashant Singh
- Genomics Shared Resource, Roswell Park Comprehensive Cancer Center, Elm & Carlton streets, Buffalo, NY, 14263, USA.
| | - Elizabeth A Repasky
- Department of Immunology, Roswell Park Comprehensive Cancer Center, Elm & Carlton streets, Buffalo, NY, 14263, USA.
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Kamath S, Stringer AM, Prestidge CA, Joyce P. Targeting the gut microbiome to control drug pharmacomicrobiomics: the next frontier in oral drug delivery. Expert Opin Drug Deliv 2023; 20:1315-1331. [PMID: 37405390 DOI: 10.1080/17425247.2023.2233900] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2023] [Accepted: 07/04/2023] [Indexed: 07/06/2023]
Abstract
INTRODUCTION The trillions of microorganisms that comprise the gut microbiome form dynamic bidirectional interactions with orally administered drugs and host health. These relationships can alter all aspects of drug pharmacokinetics and pharmacodynamics (PK/PD); thus, there is a desire to control these interactions to maximize therapeutic efficacy. Attempts to modulate drug-gut microbiome interactions have spurred advancements within the field of 'pharmacomicrobiomics' and are poised to become the next frontier of oral drug delivery. AREAS COVERED This review details the bidirectional interactions that exist between oral drugs and the gut microbiome, with clinically relevant case examples outlining a clear motive for controlling pharmacomicrobiomic interactions. Specific focus is attributed to novel and advanced strategies that have demonstrated success in mediating drug-gut microbiome interactions. EXPERT OPINION Co-administration of gut-active supplements (e.g. pro- and pre-biotics), innovative drug delivery vehicles, and strategic polypharmacy serve as the most promising and clinically viable approaches for controlling pharmacomicrobiomic interactions. Targeting the gut microbiome through these strategies presents new opportunities for improving therapeutic efficacy by precisely mediating PK/PD, while mitigating metabolic disturbances caused by drug-induced gut dysbiosis. However, successfully translating preclinical potential into clinical outcomes relies on overcoming key challenges related to interindividual variability in microbiome composition and study design parameters.
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Affiliation(s)
- Srinivas Kamath
- UniSa Clinical & Health Sciences, University of South Australia, Adelaide, South Australia, Australia
| | - Andrea M Stringer
- UniSa Clinical & Health Sciences, University of South Australia, Adelaide, South Australia, Australia
| | - Clive A Prestidge
- UniSa Clinical & Health Sciences, University of South Australia, Adelaide, South Australia, Australia
| | - Paul Joyce
- UniSa Clinical & Health Sciences, University of South Australia, Adelaide, South Australia, Australia
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15
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Abstract
Mouse models of colorectal cancer (CRC) have been crucial in the identification of the role of genes responsible for the full range of pathology of the human disease and have proved to be dependable for testing anti-cancer drugs. Recent research points toward the relevance of tumor, angiogenic, and immune microenvironments in CRC progression to late-stage disease, as well as the treatment of it. This study examines important mouse models in CRC, discussing inherent strengths and weaknesses disclosed during their construction. It endeavors to provide both a synopsis of previous work covering how investigators have defined various models and to evaluate critically how researchers are most likely to use them in the future. Accumulated evidence regarding the metastatic process and the hope of using checkpoint inhibitors and immunological inhibitor therapies points to the need for a genetically engineered mouse model that is both immunocompetent and autochthonous.
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Affiliation(s)
- Melanie Haas Kucherlapati
- Department of Genetics, Harvard Medical School, Boston, MA, USA
- Department of Medicine, Division of Genetics, Brigham and Women’s Hospital, Boston, MA, USA
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16
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Bedree JK, Kerns K, Chen T, Lima BP, Liu G, Ha P, Shi J, Pan HC, Kim JK, Tran L, Minot SS, Hendrickson EL, Lamont EI, Schulte F, Hardt M, Stephens D, Patel M, Kokaras A, Stodieck L, Shirazi-Fard Y, Wu B, Kwak JH, Ting K, Soo C, McLean JS, He X, Shi W. Specific host metabolite and gut microbiome alterations are associated with bone loss during spaceflight. Cell Rep 2023; 42:112299. [PMID: 37080202 PMCID: PMC10344367 DOI: 10.1016/j.celrep.2023.112299] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2022] [Revised: 10/30/2022] [Accepted: 03/07/2023] [Indexed: 04/22/2023] Open
Abstract
Understanding the axis of the human microbiome and physiological homeostasis is an essential task in managing deep-space-travel-associated health risks. The NASA-led Rodent Research 5 mission enabled an ancillary investigation of the gut microbiome, varying exposure to microgravity (flight) relative to ground controls in the context of previously shown bone mineral density (BMD) loss that was observed in these flight groups. We demonstrate elevated abundance of Lactobacillus murinus and Dorea sp. during microgravity exposure relative to ground control through whole-genome sequencing and 16S rRNA analyses. Specific functionally assigned gene clusters of L. murinus and Dorea sp. capable of producing metabolites, lactic acid, leucine/isoleucine, and glutathione are enriched. These metabolites are elevated in the microgravity-exposed host serum as shown by liquid chromatography-tandem mass spectrometry (LC-MS/MS) metabolomic analysis. Along with BMD loss, ELISA reveals increases in osteocalcin and reductions in tartrate-resistant acid phosphatase 5b signifying additional loss of bone homeostasis in flight.
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Affiliation(s)
- Joseph K Bedree
- Section of Oral Biology, Division of Oral Biology and Medicine, School of Dentistry, University of California, Los Angeles, Los Angeles, CA 90095, USA; Department of Microbiology, The Forsyth Institute, Cambridge, MA 02142, USA.
| | - Kristopher Kerns
- Department of Periodontics, School of Dentistry, University of Washington, Seattle, WA 98195, USA
| | - Tsute Chen
- Department of Microbiology, The Forsyth Institute, Cambridge, MA 02142, USA; Department of Oral Medicine, Infection and Immunity, Harvard School of Dental Medicine, Boston, MA 02115, USA
| | - Bruno P Lima
- Department of Diagnostic and Biological Sciences, University of Minnesota, Minneapolis, MN 55455, USA
| | - Guo Liu
- Section of Oral Biology, Division of Oral Biology and Medicine, School of Dentistry, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Pin Ha
- Section of Orthodontics, Division of Growth & Development, School of Dentistry, University of California, Los Angeles, Los Angeles, CA 90095, USA; Division of Plastic and Reconstructive Surgery, School of Medicine, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Jiayu Shi
- Section of Oral Biology, Division of Oral Biology and Medicine, School of Dentistry, University of California, Los Angeles, Los Angeles, CA 90095, USA; Department of Orthodontics and Pediatric Dentistry, School of Dentistry, University of Michigan, Ann Arbor, MI 48109, USA
| | - Hsin Chuan Pan
- Section of Oral Biology, Division of Oral Biology and Medicine, School of Dentistry, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Jong Kil Kim
- Section of Oral Biology, Division of Oral Biology and Medicine, School of Dentistry, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Luan Tran
- Section of Oral Biology, Division of Oral Biology and Medicine, School of Dentistry, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Samuel S Minot
- Microbiome Research Initiative, Fred Hutchinson Cancer Research Center, Seattle, WA 98109, USA
| | - Erik L Hendrickson
- Department of Periodontics, School of Dentistry, University of Washington, Seattle, WA 98195, USA
| | - Eleanor I Lamont
- Department of Periodontics, School of Dentistry, University of Washington, Seattle, WA 98195, USA
| | - Fabian Schulte
- Forsyth Center for Salivary Diagnostics, Department of Applied Oral Sciences, The Forsyth Institute, Cambridge, MA 02142, USA; Harvard School of Dental Medicine, Department of Developmental Biology, Boston, MA 02115, USA
| | - Markus Hardt
- Forsyth Center for Salivary Diagnostics, Department of Applied Oral Sciences, The Forsyth Institute, Cambridge, MA 02142, USA; Harvard School of Dental Medicine, Department of Developmental Biology, Boston, MA 02115, USA
| | - Danielle Stephens
- Multiplex Core, Department of Applied Oral Sciences, The Forsyth Institute, Cambridge, MA 02142, USA
| | - Michele Patel
- Multiplex Core, Department of Applied Oral Sciences, The Forsyth Institute, Cambridge, MA 02142, USA
| | - Alexis Kokaras
- Department of Microbiology, The Forsyth Institute, Cambridge, MA 02142, USA
| | - Louis Stodieck
- BioServe Space Technologies, Department of Aerospace Engineering Sciences, University of Colorado, Boulder, CO 80303, USA
| | - Yasaman Shirazi-Fard
- Bone and Signaling Laboratory, Space Biosciences Division, NASA Ames Research Center, Mail Stop 288-2, Moffett Field, CA 94035, USA
| | - Benjamin Wu
- Department of Bioengineering, School of Engineering, University of California, Los Angeles, Los Angeles, CA 90095, USA; Division of Advanced Prosthodontics, School of Dentistry, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Jin Hee Kwak
- Section of Orthodontics, Division of Growth & Development, School of Dentistry, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Kang Ting
- Section of Orthodontics, Division of Growth & Development, School of Dentistry, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Chia Soo
- Division of Plastic and Reconstructive Surgery, School of Medicine, University of California, Los Angeles, Los Angeles, CA 90095, USA; Department of Orthopedic Surgery, School of Medicine, School of Dentistry, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Jeffrey S McLean
- Department of Periodontics, School of Dentistry, University of Washington, Seattle, WA 98195, USA
| | - Xuesong He
- Department of Microbiology, The Forsyth Institute, Cambridge, MA 02142, USA; Department of Oral Medicine, Infection and Immunity, Harvard School of Dental Medicine, Boston, MA 02115, USA
| | - Wenyuan Shi
- Department of Microbiology, The Forsyth Institute, Cambridge, MA 02142, USA.
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Tejkalová H, Jakob L, Kvasnová S, Klaschka J, Sechovcová H, Mrázek J, Páleníček T, Fliegerová KO. The influence of antibiotic treatment on the behavior and gut microbiome of adult rats neonatally insulted with lipopolysaccharide. Heliyon 2023; 9:e15417. [PMID: 37123951 PMCID: PMC10130227 DOI: 10.1016/j.heliyon.2023.e15417] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2022] [Revised: 04/05/2023] [Accepted: 04/06/2023] [Indexed: 05/02/2023] Open
Abstract
The present study investigated whether neonatal exposure to the proinflammatory endotoxin lipopolysaccharide (LPS) followed by an antibiotic (ATB)-induced dysbiosis in early adulthood could induce neurodevelopmental disorders-like behavioral changes in adult male rats. Combining these two stressors resulted in decreased weight gain, but no significant behavioral abnormalities were observed. LPS treatment resulted in adult rats' hypoactivity and induced anxiety-like behavior in the social recognition paradigm, but these behavioral changes were not exacerbated by ATB-induced gut dysbiosis. ATB treatment seriously disrupted the gut bacterial community, but dysbiosis did not affect locomotor activity, social recognition, and acoustic reactivity in adult rats. Fecal bacterial community analyses showed no differences between the LPS challenge exposed/unexposed rats, while the effect of ATB administration was decisive regardless of prior LPS exposure. ATB treatment resulted in significantly decreased bacterial diversity, suppression of Clostridiales and Bacteroidales, and increases in Lactobacillales, Enterobacteriales, and Burkholderiales. The persistent effect of LPS on some aspects of behavior suggests a long-term effect of early toxin exposure that was not observed in ATB-treated animals. However, an anti-inflammatory protective effect of ATB cannot be assumed because of the increased abundance of pro-inflammatory, potentially pathogenic bacteria (Proteus, Suttrella) and the elimination of the bacterial families Ruminococcaceae and Lachnospiraceae, which are generally considered beneficial for gut health.
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Affiliation(s)
- Hana Tejkalová
- National Institute of Mental Health; Klecany, Czech Republic
| | - Lea Jakob
- National Institute of Mental Health; Klecany, Czech Republic
- 3rd Faculty of Medicine, Charles University, Czech Republic
- Corresponding author. National Institute of Mental Health, Topolova 748, 250 67 Klecany, Czech Republic,
| | - Simona Kvasnová
- Institute of Animal Physiology and Genetics of the Czech Academy of Sciences, Czech Republic
| | - Jan Klaschka
- Institute of Computer Science of the Czech Academy of Sciences, Czech Republic
| | - Hana Sechovcová
- Institute of Animal Physiology and Genetics of the Czech Academy of Sciences, Czech Republic
- Czech University of Life Sciences in Prague, Czech Republic
| | - Jakub Mrázek
- Institute of Animal Physiology and Genetics of the Czech Academy of Sciences, Czech Republic
| | - Tomáš Páleníček
- National Institute of Mental Health; Klecany, Czech Republic
- 3rd Faculty of Medicine, Charles University, Czech Republic
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de Souza GR, De-Oliveira ACAX, Soares V, De-Souza TP, Barbi NS, Paumgartten FJR, da Silva AJR. Protective effects of a chemically characterized extract from solanum torvum leaves on acetaminophen-induced liver injury. Drug Chem Toxicol 2023; 46:122-135. [PMID: 35105269 DOI: 10.1080/01480545.2021.2012905] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
Distinct parts of Solanum torvum Swartz. (Solanaceae) are popularly used for a variety of therapeutic purposes. This study determined the phytochemical composition of a phenolic fraction of S. torvum leaf aqueous extract and investigated its antioxidant and liver-protective properties. A phenolic compound-enriched fraction, or phenolic fraction (STLAE-PF) of an infusion (STLAE) of S. torvum leaves, was tested in vitro (antagonism of H2O2 in cytotoxicity and DCF assays with HepG2/C3A cells), and in vivo for antioxidant activity and protective effects against acetaminophen (APAP)-induced liver injury in mice. Thirty-eight compounds (flavonoids, esters of hydroxycinnamic acid, and chlorogenic acid isomers) were tentatively identified (high-performance liquid chromatography coupled to high-resolution electrospray mass spectrometry) in the STLAE-PF fraction. In vitro assays in HepG2/C3A cells showed that STLAE-PF and some flavonoids contained in this phenolic fraction, at noncytotoxic levels, antagonized in a concentration-dependent manner the effects of a powerful oxidant agent (H2O2). In C57BL/6 mice, oral administration of STLAE (600 and 1,200 mg/kg bw) or STLAE-PF (300 mg/kg bw) prevented the rise in serum transaminases (ALT and AST), depletion of reduced glutathione (GSH) and elevation of thiobarbituric acid reactive species (TBARs) levels in the liver caused by APAP (600 mg/kg bw, i.p.). The hepatoprotective effects of STLAE-PF (300 mg/kg bw) against APAP-caused liver injury were comparable to those of N-acetyl-cysteine (NAC 300 or 600 mg/kg bw i.p.). These findings indicate that a phenolic fraction of S. torvum leaf extract (STLAE-PF) is a new phytotherapeutic agent potentially useful for preventing/treating liver injury caused by APAP overdosing.
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Affiliation(s)
- Gabriela R de Souza
- Department of Biological Sciences, National School of Public Health, Oswaldo Cruz Foundation, Rio de Janeiro
| | - Ana Cecilia A X De-Oliveira
- Department of Biological Sciences, National School of Public Health, Oswaldo Cruz Foundation, Rio de Janeiro
| | - Vitor Soares
- Institute for Research on Natural Products, Federal University of Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - Thamyris Perez De-Souza
- Department of Biological Sciences, National School of Public Health, Oswaldo Cruz Foundation, Rio de Janeiro
| | - Nancy S Barbi
- Department of Clinical and Toxicological Analyses, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Francisco J R Paumgartten
- Department of Biological Sciences, National School of Public Health, Oswaldo Cruz Foundation, Rio de Janeiro
| | - Antonio J R da Silva
- Institute for Research on Natural Products, Federal University of Rio de Janeiro, Rio de Janeiro, RJ, Brazil
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Kwan M, Sepulveda M, Alegre ML. Methods to Study TLRs in Transplantation. Methods Mol Biol 2023; 2700:139-149. [PMID: 37603178 DOI: 10.1007/978-1-0716-3366-3_7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/22/2023]
Abstract
Toll-like receptors (TLRs) are key regulators of immune responses, including alloimmune responses. In this chapter, we present protocols to study whether and/or how TLRs can contribute to solid-organ transplant rejection. We describe methods to reduce heterogeneity in microbiome variations between animals before beginning experiments to limit confounding factors, protocols using TLR agonists to prevent anti-CD154/donor splenocyte transfer-mediated tolerance, and recipes to heat-kill microbes or use hosts genetically deficient in TLR-dependent pathways to distinguish between TLR-dependent and live bacteria-dependent effects.
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Affiliation(s)
- Montserrat Kwan
- Department of Medicine, Section of Rheumatology, University of Chicago, Chicago, IL, USA
| | - Martin Sepulveda
- Department of Medicine, Section of Rheumatology, University of Chicago, Chicago, IL, USA
| | - Maria-Luisa Alegre
- Department of Medicine, Section of Rheumatology, University of Chicago, Chicago, IL, USA.
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20
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Kim S, Park HJ, Lee SI. The Microbiome in Systemic Sclerosis: Pathophysiology and Therapeutic Potential. Int J Mol Sci 2022; 23:ijms232416154. [PMID: 36555792 PMCID: PMC9853331 DOI: 10.3390/ijms232416154] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2022] [Revised: 12/06/2022] [Accepted: 12/15/2022] [Indexed: 12/23/2022] Open
Abstract
Systemic sclerosis (SSc), also known as scleroderma, is an autoimmune disease with unknown etiology characterized by multi-organ fibrosis. Despite substantial investigation on SSc-related cellular and molecular mechanisms, effective therapies are still lacking. The skin, lungs, and gut are the most affected organs in SSc, which act as physical barriers and constantly communicate with colonized microbiota. Recent reports have documented a unique microbiome signature, which may be the pathogenic trigger or driver of SSc. Since gut microbiota influences the efficacy and toxicity of oral drugs, evaluating drug-microbiota interactions has become an area of interest in disease treatment. The existing evidence highlights the potential of the microbial challenge as a novel therapeutic option in SSc. In this review, we have summarized the current knowledge about molecular mechanisms of SSc and highlighted the underlying role of the microbiome in SSc pathogenesis. We have also discussed the latest therapeutic interventions using microbiomes in SSc, including drug-microbiota interactions and animal disease models. This review aims to elucidate the pathophysiological connection and therapeutic potential of the microbiome in SSc. Insights into the microbiome will significantly improve our understanding of etiopathogenesis and developing therapeutics for SSc.
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21
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Farré R, Almendros I, Martínez-García MÁ, Gozal D. Experimental Models to Study End-Organ Morbidity in Sleep Apnea: Lessons Learned and Future Directions. Int J Mol Sci 2022; 23:ijms232214430. [PMID: 36430904 PMCID: PMC9696027 DOI: 10.3390/ijms232214430] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2022] [Revised: 11/17/2022] [Accepted: 11/18/2022] [Indexed: 11/22/2022] Open
Abstract
Sleep apnea (SA) is a very prevalent sleep breathing disorder mainly characterized by intermittent hypoxemia and sleep fragmentation, with ensuing systemic inflammation, oxidative stress, and immune deregulation. These perturbations promote the risk of end-organ morbidity, such that SA patients are at increased risk of cardiovascular, neurocognitive, metabolic and malignant disorders. Investigating the potential mechanisms underlying SA-induced end-organ dysfunction requires the use of comprehensive experimental models at the cell, animal and human levels. This review is primarily focused on the experimental models employed to date in the study of the consequences of SA and tackles 3 different approaches. First, cell culture systems whereby controlled patterns of intermittent hypoxia cycling fast enough to mimic the rates of episodic hypoxemia experienced by patients with SA. Second, animal models consisting of implementing realistic upper airway obstruction patterns, intermittent hypoxia, or sleep fragmentation such as to reproduce the noxious events characterizing SA. Finally, human SA models, which consist either in subjecting healthy volunteers to intermittent hypoxia or sleep fragmentation, or alternatively applying oxygen supplementation or temporary nasal pressure therapy withdrawal to SA patients. The advantages, limitations, and potential improvements of these models along with some of their pertinent findings are reviewed.
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Affiliation(s)
- Ramon Farré
- Unitat de Biofísica i Bioenginyeria, Facultat de Medicina i Ciències de la Salut, Universitat de Barcelona, 08036 Barcelona, Spain
- CIBER de Enfermedades Respiratorias, 1964603 Madrid, Spain
- Institut Investigacions Biomediques August Pi Sunyer, 08036 Barcelona, Spain
- Correspondence: (R.F.); (D.G.)
| | - Isaac Almendros
- Unitat de Biofísica i Bioenginyeria, Facultat de Medicina i Ciències de la Salut, Universitat de Barcelona, 08036 Barcelona, Spain
- CIBER de Enfermedades Respiratorias, 1964603 Madrid, Spain
- Institut Investigacions Biomediques August Pi Sunyer, 08036 Barcelona, Spain
| | - Miguel-Ángel Martínez-García
- CIBER de Enfermedades Respiratorias, 1964603 Madrid, Spain
- Pneumology Department, University and Polytechnic La Fe Hospital, 46026 Valencia, Spain
| | - David Gozal
- Department of Child Health and Child Health Research Institute, School of Medicine, The University of Missouri, Columbia, MO 65201, USA
- Correspondence: (R.F.); (D.G.)
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22
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Transfer efficiency and impact on disease phenotype of differing methods of gut microbiota transfer. Sci Rep 2022; 12:19621. [PMID: 36380056 PMCID: PMC9666633 DOI: 10.1038/s41598-022-24014-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2022] [Accepted: 11/08/2022] [Indexed: 11/16/2022] Open
Abstract
To test causal relationships between complex gut microbiota (GM) and host outcomes, researchers frequently transfer GM between donor and recipient mice via embryo transfer (ET) rederivation, cross-fostering (CF), and co-housing. In this study, we assess the influence of the transfer method and the differences in baseline donor and recipient microbiota richness, on transfer efficiency. Additionally, recipient mice were subjected to DSS-induced chronic colitis to determine whether disease severity was affected by GM transfer efficiency or features within the GM. We found that the recipient's genetic background, the baseline richness of donor and recipient GM, and the transfer method all influenced the GM transfer efficiency. Recipient genetic background and GM both had significant effects on DSS colitis severity and, unexpectedly, the transfer method was strongly associated with differential disease severity regardless of the other factors.
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23
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Shigeno Y, Liu H, Sano C, Inoue R, Niimi K, Nagaoka K. Individual variations and effects of birth facilities on the fecal microbiome of laboratory-bred marmosets (Callithrix jacchus) assessed by a longitudinal study. PLoS One 2022; 17:e0273702. [PMID: 36040908 PMCID: PMC9426884 DOI: 10.1371/journal.pone.0273702] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2022] [Accepted: 08/12/2022] [Indexed: 11/18/2022] Open
Abstract
Laboratory animals are used for scientific research in various fields. In recent years, there has been a concern that the gut microbiota may differ among laboratory animals, which may yield different results in different laboratories where in-vivo experiments are performed. Our knowledge of the gut microbiota of laboratory-reared common marmosets (Callithrix jacchus) is limited; thus, in this study, we analyzed the daily changes in fecal microbiome composition, individual variations, and effects of the birth facility in healthy female laboratory-reared marmosets, supplied by three vendors. We showed that the marmoset fecal microbiome varied among animals from the same vendor and among animals from different vendors (birth facility), with daily changes of approximately 37%. The fecal microbiome per vendor is characterized by alpha diversity and specific bacteria, with Bifidobacterium for vendor A, Phascolarctobacterium for vendor B, and Megamonas for vendor C. Furthermore, we found that plasma progesterone concentrations and estrous cycles were not correlated with daily fecal microbiome changes. In contrast, animals with an anovulatory cycle lacked Megamonas and Desulfovibrio bacteria compared to normal estrous females. This study suggests that the source of the animal, such as breeding and housing facilities, is important for in-vivo experiments on the marmoset gut microbiota.
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Affiliation(s)
- Yuko Shigeno
- Laboratory of Veterinary Physiology, Department of Veterinary Medicine, Tokyo University of Agriculture and Technology, Tokyo, Japan
- Research Resources Division, RIKEN Center for Brain Science, Saitama, Japan
| | - Hong Liu
- Laboratory of Veterinary Physiology, Department of Veterinary Medicine, Tokyo University of Agriculture and Technology, Tokyo, Japan
| | - Chie Sano
- Research Resources Division, RIKEN Center for Brain Science, Saitama, Japan
| | - Ryo Inoue
- Laboratory of Animal Science, Department of Applied Biological Sciences, Setsunan University, Osaka, Japan
| | - Kimie Niimi
- Research Resources Division, RIKEN Center for Brain Science, Saitama, Japan
| | - Kentaro Nagaoka
- Laboratory of Veterinary Physiology, Department of Veterinary Medicine, Tokyo University of Agriculture and Technology, Tokyo, Japan
- * E-mail:
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Moysidou CM, Withers AM, Nisbet AJ, Price DRG, Bryant CE, Cantacessi C, Owens RM. Investigation of Host-Microbe-Parasite Interactions in an In Vitro 3D Model of the Vertebrate Gut. Adv Biol (Weinh) 2022; 6:e2200015. [PMID: 35652159 DOI: 10.1002/adbi.202200015] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2022] [Revised: 04/23/2022] [Indexed: 01/28/2023]
Abstract
In vitro models of the gut-microbiome axis are in high demand. Conventionally, intestinal monolayers grown on Transwell setups are used to test the effects of commensals/pathogens on the barrier integrity, both under homeostatic and pathophysiological conditions. While such models remain valuable for deepening the understanding of host-microbe interactions, often, they lack key biological components that mediate this intricate crosstalk. Here, a 3D in vitro model of the vertebrate intestinal epithelium, interfaced with immune cells surviving in culture for over 3 weeks, is developed and applied to proof-of-concept studies of host-microbe interactions. More specifically, the establishment of stable host-microbe cocultures is described and functional and morphological changes in the intestinal barrier induced by the presence of commensal bacteria are shown. Finally, evidence is provided that the 3D vertebrate gut models can be used as platforms to test host-microbe-parasite interactions. Exposure of gut-immune-bacteria cocultures to helminth "excretory/secretory products" induces in vivo-like up-/down-regulation of certain cytokines. These findings support the robustness of the modular in vitro cell systems for investigating the dynamics of host-microbe crosstalk and pave the way toward new approaches for systems biology studies of pathogens that cannot be maintained in vitro, including parasitic helminths.
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Affiliation(s)
- Chrysanthi-Maria Moysidou
- Department of Chemical Engineering and Biotechnology, University of Cambridge, Philippa Fawcett Drive, West Cambridge Site, CB3 0AS, UK
| | - Aimee M Withers
- Department of Chemical Engineering and Biotechnology, University of Cambridge, Philippa Fawcett Drive, West Cambridge Site, CB3 0AS, UK
| | - Alasdair J Nisbet
- Moredun Research Institute, Pentlands Science Park, Edinburgh, EH26 0PZ, UK
| | - Daniel R G Price
- Moredun Research Institute, Pentlands Science Park, Edinburgh, EH26 0PZ, UK
| | - Clare E Bryant
- Department of Veterinary Medicine, Cambridge Veterinary School, University of Cambridge, Madingley Road, Cambridge, CB3 0ES, UK
| | - Cinzia Cantacessi
- Department of Veterinary Medicine, Cambridge Veterinary School, University of Cambridge, Madingley Road, Cambridge, CB3 0ES, UK
| | - Róisín M Owens
- Department of Chemical Engineering and Biotechnology, University of Cambridge, Philippa Fawcett Drive, West Cambridge Site, CB3 0AS, UK
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25
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Efron PA, Darden DB, Li EC, Munley J, Kelly L, Fenner B, Nacionales DC, Ungaro RF, Dirain ML, Rincon J, Mankowski RT, Leeuwenburgh C, Moore FA, Brakenridge SC, Foster TC, Laitano O, Casadesus G, Moldawer LL, Mohr AM, Thomas RM. Sex differences associate with late microbiome alterations after murine surgical sepsis. J Trauma Acute Care Surg 2022; 93:137-146. [PMID: 35324554 PMCID: PMC9323556 DOI: 10.1097/ta.0000000000003599] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2021] [Revised: 02/22/2022] [Accepted: 02/26/2022] [Indexed: 02/01/2023]
Abstract
BACKGROUND Sepsis-induced gut microbiome alterations contribute to sepsis-related morbidity and mortality. Given evidence for improved postsepsis outcomes in females compared with males, we hypothesized that female mice maintain microbiota resilience versus males. METHODS Mixed-sex C57BL/6 mice underwent cecal ligation and puncture (CLP) with antibiotics, saline resuscitation, and daily chronic stress and were compared with naive (nonsepsis/no antibiotics) controls. For this work, the results of young (3-5 months) and old (18-22 months) adult mice were analyzed by sex, independent and dependent of age. Mice were sacrificed at days 7 and 14, and 16S rRNA gene sequencing was performed on fecal bacterial DNA. α and β diversity were determined by Shannon index and Bray-Curtis with principal coordinate analysis, respectively. False discovery rate (FDR) correction was implemented to account for potential housing effect. RESULTS In control mice, there was no difference in α or β diversity between male and female mice (FDR, 0.76 and 0.99, respectively). However, male mice that underwent CLP with daily chronic stress had a decrease in microbiota α diversity at 7 days post-CLP (Shannon FDR, 0.005), which was sustained at 14 days post-CLP (Shannon FDR, 0.001), compared with baseline. In addition, male mice maintained differences in β diversity even at day 14 compared with controls (FDR, <0.0001). In contrast, female mice had a decreased microbiota α diversity (Shannon FDR, 0.03) and β diversity (FDR, 0.02) 7 days post-CLP but recovered their α and β diversity by post-CLP day 14 (Shannon FDR, 0.5, and FDR, 0.02, respectively). Further analysis of females revealed that only young female mice were not different (β diversity) post-CLP day 14 to controls. CONCLUSION Although sepsis-induced perturbations of the intestinal microbiota occur initially in both male and female C57BL/6 mice, females demonstrate different microbiota by day 14. This may be seen primarily in younger females. This difference in recovery may play a role in outcome differences between sexes after sepsis.
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Affiliation(s)
- Philip Alexander Efron
- From the Department of Surgery (P.A.E., D.B.D., J.M., L.K., B.F., D.C.N., R.F.U., M.L.D., J.R., F.A.M., S.C.B., L.L.M., A.M.M., R.M.T.), Department of Aging and Geriatric Research (P.A.E., R.T.M., C.L.), Department of Medicine (E.C.L.), and Division of Infectious Diseases and Global Medicine, Department of Neuroscience (T.C.F.), University of Florida College of Medicine, Gainesville; Department of Nutrition and Integrative Physiology (O.L.), Florida State University College of Health and Human Sciences, Tallahassee; Department of Pharmacology and Therapeutics (G.C.), College of Medicine, and Department of Molecular Genetics and Microbiology (R.M.T.), University of Florida; and Section of General Surgery (R.M.T.); North Florida/South Georgia Veterans Health System, Gainesville, Florida
| | - Dijoia B. Darden
- From the Department of Surgery (P.A.E., D.B.D., J.M., L.K., B.F., D.C.N., R.F.U., M.L.D., J.R., F.A.M., S.C.B., L.L.M., A.M.M., R.M.T.), Department of Aging and Geriatric Research (P.A.E., R.T.M., C.L.), Department of Medicine (E.C.L.), and Division of Infectious Diseases and Global Medicine, Department of Neuroscience (T.C.F.), University of Florida College of Medicine, Gainesville; Department of Nutrition and Integrative Physiology (O.L.), Florida State University College of Health and Human Sciences, Tallahassee; Department of Pharmacology and Therapeutics (G.C.), College of Medicine, and Department of Molecular Genetics and Microbiology (R.M.T.), University of Florida; and Section of General Surgery (R.M.T.); North Florida/South Georgia Veterans Health System, Gainesville, Florida
| | - Eric C. Li
- From the Department of Surgery (P.A.E., D.B.D., J.M., L.K., B.F., D.C.N., R.F.U., M.L.D., J.R., F.A.M., S.C.B., L.L.M., A.M.M., R.M.T.), Department of Aging and Geriatric Research (P.A.E., R.T.M., C.L.), Department of Medicine (E.C.L.), and Division of Infectious Diseases and Global Medicine, Department of Neuroscience (T.C.F.), University of Florida College of Medicine, Gainesville; Department of Nutrition and Integrative Physiology (O.L.), Florida State University College of Health and Human Sciences, Tallahassee; Department of Pharmacology and Therapeutics (G.C.), College of Medicine, and Department of Molecular Genetics and Microbiology (R.M.T.), University of Florida; and Section of General Surgery (R.M.T.); North Florida/South Georgia Veterans Health System, Gainesville, Florida
| | - Jennifer Munley
- From the Department of Surgery (P.A.E., D.B.D., J.M., L.K., B.F., D.C.N., R.F.U., M.L.D., J.R., F.A.M., S.C.B., L.L.M., A.M.M., R.M.T.), Department of Aging and Geriatric Research (P.A.E., R.T.M., C.L.), Department of Medicine (E.C.L.), and Division of Infectious Diseases and Global Medicine, Department of Neuroscience (T.C.F.), University of Florida College of Medicine, Gainesville; Department of Nutrition and Integrative Physiology (O.L.), Florida State University College of Health and Human Sciences, Tallahassee; Department of Pharmacology and Therapeutics (G.C.), College of Medicine, and Department of Molecular Genetics and Microbiology (R.M.T.), University of Florida; and Section of General Surgery (R.M.T.); North Florida/South Georgia Veterans Health System, Gainesville, Florida
| | - Lauren Kelly
- From the Department of Surgery (P.A.E., D.B.D., J.M., L.K., B.F., D.C.N., R.F.U., M.L.D., J.R., F.A.M., S.C.B., L.L.M., A.M.M., R.M.T.), Department of Aging and Geriatric Research (P.A.E., R.T.M., C.L.), Department of Medicine (E.C.L.), and Division of Infectious Diseases and Global Medicine, Department of Neuroscience (T.C.F.), University of Florida College of Medicine, Gainesville; Department of Nutrition and Integrative Physiology (O.L.), Florida State University College of Health and Human Sciences, Tallahassee; Department of Pharmacology and Therapeutics (G.C.), College of Medicine, and Department of Molecular Genetics and Microbiology (R.M.T.), University of Florida; and Section of General Surgery (R.M.T.); North Florida/South Georgia Veterans Health System, Gainesville, Florida
| | - Brittany Fenner
- From the Department of Surgery (P.A.E., D.B.D., J.M., L.K., B.F., D.C.N., R.F.U., M.L.D., J.R., F.A.M., S.C.B., L.L.M., A.M.M., R.M.T.), Department of Aging and Geriatric Research (P.A.E., R.T.M., C.L.), Department of Medicine (E.C.L.), and Division of Infectious Diseases and Global Medicine, Department of Neuroscience (T.C.F.), University of Florida College of Medicine, Gainesville; Department of Nutrition and Integrative Physiology (O.L.), Florida State University College of Health and Human Sciences, Tallahassee; Department of Pharmacology and Therapeutics (G.C.), College of Medicine, and Department of Molecular Genetics and Microbiology (R.M.T.), University of Florida; and Section of General Surgery (R.M.T.); North Florida/South Georgia Veterans Health System, Gainesville, Florida
| | - Dina C. Nacionales
- From the Department of Surgery (P.A.E., D.B.D., J.M., L.K., B.F., D.C.N., R.F.U., M.L.D., J.R., F.A.M., S.C.B., L.L.M., A.M.M., R.M.T.), Department of Aging and Geriatric Research (P.A.E., R.T.M., C.L.), Department of Medicine (E.C.L.), and Division of Infectious Diseases and Global Medicine, Department of Neuroscience (T.C.F.), University of Florida College of Medicine, Gainesville; Department of Nutrition and Integrative Physiology (O.L.), Florida State University College of Health and Human Sciences, Tallahassee; Department of Pharmacology and Therapeutics (G.C.), College of Medicine, and Department of Molecular Genetics and Microbiology (R.M.T.), University of Florida; and Section of General Surgery (R.M.T.); North Florida/South Georgia Veterans Health System, Gainesville, Florida
| | - Ricardo F. Ungaro
- From the Department of Surgery (P.A.E., D.B.D., J.M., L.K., B.F., D.C.N., R.F.U., M.L.D., J.R., F.A.M., S.C.B., L.L.M., A.M.M., R.M.T.), Department of Aging and Geriatric Research (P.A.E., R.T.M., C.L.), Department of Medicine (E.C.L.), and Division of Infectious Diseases and Global Medicine, Department of Neuroscience (T.C.F.), University of Florida College of Medicine, Gainesville; Department of Nutrition and Integrative Physiology (O.L.), Florida State University College of Health and Human Sciences, Tallahassee; Department of Pharmacology and Therapeutics (G.C.), College of Medicine, and Department of Molecular Genetics and Microbiology (R.M.T.), University of Florida; and Section of General Surgery (R.M.T.); North Florida/South Georgia Veterans Health System, Gainesville, Florida
| | - Marvin L. Dirain
- From the Department of Surgery (P.A.E., D.B.D., J.M., L.K., B.F., D.C.N., R.F.U., M.L.D., J.R., F.A.M., S.C.B., L.L.M., A.M.M., R.M.T.), Department of Aging and Geriatric Research (P.A.E., R.T.M., C.L.), Department of Medicine (E.C.L.), and Division of Infectious Diseases and Global Medicine, Department of Neuroscience (T.C.F.), University of Florida College of Medicine, Gainesville; Department of Nutrition and Integrative Physiology (O.L.), Florida State University College of Health and Human Sciences, Tallahassee; Department of Pharmacology and Therapeutics (G.C.), College of Medicine, and Department of Molecular Genetics and Microbiology (R.M.T.), University of Florida; and Section of General Surgery (R.M.T.); North Florida/South Georgia Veterans Health System, Gainesville, Florida
| | - Jaimar Rincon
- From the Department of Surgery (P.A.E., D.B.D., J.M., L.K., B.F., D.C.N., R.F.U., M.L.D., J.R., F.A.M., S.C.B., L.L.M., A.M.M., R.M.T.), Department of Aging and Geriatric Research (P.A.E., R.T.M., C.L.), Department of Medicine (E.C.L.), and Division of Infectious Diseases and Global Medicine, Department of Neuroscience (T.C.F.), University of Florida College of Medicine, Gainesville; Department of Nutrition and Integrative Physiology (O.L.), Florida State University College of Health and Human Sciences, Tallahassee; Department of Pharmacology and Therapeutics (G.C.), College of Medicine, and Department of Molecular Genetics and Microbiology (R.M.T.), University of Florida; and Section of General Surgery (R.M.T.); North Florida/South Georgia Veterans Health System, Gainesville, Florida
| | - Robert T. Mankowski
- From the Department of Surgery (P.A.E., D.B.D., J.M., L.K., B.F., D.C.N., R.F.U., M.L.D., J.R., F.A.M., S.C.B., L.L.M., A.M.M., R.M.T.), Department of Aging and Geriatric Research (P.A.E., R.T.M., C.L.), Department of Medicine (E.C.L.), and Division of Infectious Diseases and Global Medicine, Department of Neuroscience (T.C.F.), University of Florida College of Medicine, Gainesville; Department of Nutrition and Integrative Physiology (O.L.), Florida State University College of Health and Human Sciences, Tallahassee; Department of Pharmacology and Therapeutics (G.C.), College of Medicine, and Department of Molecular Genetics and Microbiology (R.M.T.), University of Florida; and Section of General Surgery (R.M.T.); North Florida/South Georgia Veterans Health System, Gainesville, Florida
| | - Christiaan Leeuwenburgh
- From the Department of Surgery (P.A.E., D.B.D., J.M., L.K., B.F., D.C.N., R.F.U., M.L.D., J.R., F.A.M., S.C.B., L.L.M., A.M.M., R.M.T.), Department of Aging and Geriatric Research (P.A.E., R.T.M., C.L.), Department of Medicine (E.C.L.), and Division of Infectious Diseases and Global Medicine, Department of Neuroscience (T.C.F.), University of Florida College of Medicine, Gainesville; Department of Nutrition and Integrative Physiology (O.L.), Florida State University College of Health and Human Sciences, Tallahassee; Department of Pharmacology and Therapeutics (G.C.), College of Medicine, and Department of Molecular Genetics and Microbiology (R.M.T.), University of Florida; and Section of General Surgery (R.M.T.); North Florida/South Georgia Veterans Health System, Gainesville, Florida
| | - Fredrick A. Moore
- From the Department of Surgery (P.A.E., D.B.D., J.M., L.K., B.F., D.C.N., R.F.U., M.L.D., J.R., F.A.M., S.C.B., L.L.M., A.M.M., R.M.T.), Department of Aging and Geriatric Research (P.A.E., R.T.M., C.L.), Department of Medicine (E.C.L.), and Division of Infectious Diseases and Global Medicine, Department of Neuroscience (T.C.F.), University of Florida College of Medicine, Gainesville; Department of Nutrition and Integrative Physiology (O.L.), Florida State University College of Health and Human Sciences, Tallahassee; Department of Pharmacology and Therapeutics (G.C.), College of Medicine, and Department of Molecular Genetics and Microbiology (R.M.T.), University of Florida; and Section of General Surgery (R.M.T.); North Florida/South Georgia Veterans Health System, Gainesville, Florida
| | - Scott C. Brakenridge
- From the Department of Surgery (P.A.E., D.B.D., J.M., L.K., B.F., D.C.N., R.F.U., M.L.D., J.R., F.A.M., S.C.B., L.L.M., A.M.M., R.M.T.), Department of Aging and Geriatric Research (P.A.E., R.T.M., C.L.), Department of Medicine (E.C.L.), and Division of Infectious Diseases and Global Medicine, Department of Neuroscience (T.C.F.), University of Florida College of Medicine, Gainesville; Department of Nutrition and Integrative Physiology (O.L.), Florida State University College of Health and Human Sciences, Tallahassee; Department of Pharmacology and Therapeutics (G.C.), College of Medicine, and Department of Molecular Genetics and Microbiology (R.M.T.), University of Florida; and Section of General Surgery (R.M.T.); North Florida/South Georgia Veterans Health System, Gainesville, Florida
| | - Thomas C. Foster
- From the Department of Surgery (P.A.E., D.B.D., J.M., L.K., B.F., D.C.N., R.F.U., M.L.D., J.R., F.A.M., S.C.B., L.L.M., A.M.M., R.M.T.), Department of Aging and Geriatric Research (P.A.E., R.T.M., C.L.), Department of Medicine (E.C.L.), and Division of Infectious Diseases and Global Medicine, Department of Neuroscience (T.C.F.), University of Florida College of Medicine, Gainesville; Department of Nutrition and Integrative Physiology (O.L.), Florida State University College of Health and Human Sciences, Tallahassee; Department of Pharmacology and Therapeutics (G.C.), College of Medicine, and Department of Molecular Genetics and Microbiology (R.M.T.), University of Florida; and Section of General Surgery (R.M.T.); North Florida/South Georgia Veterans Health System, Gainesville, Florida
| | - Orlando Laitano
- From the Department of Surgery (P.A.E., D.B.D., J.M., L.K., B.F., D.C.N., R.F.U., M.L.D., J.R., F.A.M., S.C.B., L.L.M., A.M.M., R.M.T.), Department of Aging and Geriatric Research (P.A.E., R.T.M., C.L.), Department of Medicine (E.C.L.), and Division of Infectious Diseases and Global Medicine, Department of Neuroscience (T.C.F.), University of Florida College of Medicine, Gainesville; Department of Nutrition and Integrative Physiology (O.L.), Florida State University College of Health and Human Sciences, Tallahassee; Department of Pharmacology and Therapeutics (G.C.), College of Medicine, and Department of Molecular Genetics and Microbiology (R.M.T.), University of Florida; and Section of General Surgery (R.M.T.); North Florida/South Georgia Veterans Health System, Gainesville, Florida
| | - Gemma Casadesus
- From the Department of Surgery (P.A.E., D.B.D., J.M., L.K., B.F., D.C.N., R.F.U., M.L.D., J.R., F.A.M., S.C.B., L.L.M., A.M.M., R.M.T.), Department of Aging and Geriatric Research (P.A.E., R.T.M., C.L.), Department of Medicine (E.C.L.), and Division of Infectious Diseases and Global Medicine, Department of Neuroscience (T.C.F.), University of Florida College of Medicine, Gainesville; Department of Nutrition and Integrative Physiology (O.L.), Florida State University College of Health and Human Sciences, Tallahassee; Department of Pharmacology and Therapeutics (G.C.), College of Medicine, and Department of Molecular Genetics and Microbiology (R.M.T.), University of Florida; and Section of General Surgery (R.M.T.); North Florida/South Georgia Veterans Health System, Gainesville, Florida
| | - Lyle L. Moldawer
- From the Department of Surgery (P.A.E., D.B.D., J.M., L.K., B.F., D.C.N., R.F.U., M.L.D., J.R., F.A.M., S.C.B., L.L.M., A.M.M., R.M.T.), Department of Aging and Geriatric Research (P.A.E., R.T.M., C.L.), Department of Medicine (E.C.L.), and Division of Infectious Diseases and Global Medicine, Department of Neuroscience (T.C.F.), University of Florida College of Medicine, Gainesville; Department of Nutrition and Integrative Physiology (O.L.), Florida State University College of Health and Human Sciences, Tallahassee; Department of Pharmacology and Therapeutics (G.C.), College of Medicine, and Department of Molecular Genetics and Microbiology (R.M.T.), University of Florida; and Section of General Surgery (R.M.T.); North Florida/South Georgia Veterans Health System, Gainesville, Florida
| | - Alicia M. Mohr
- From the Department of Surgery (P.A.E., D.B.D., J.M., L.K., B.F., D.C.N., R.F.U., M.L.D., J.R., F.A.M., S.C.B., L.L.M., A.M.M., R.M.T.), Department of Aging and Geriatric Research (P.A.E., R.T.M., C.L.), Department of Medicine (E.C.L.), and Division of Infectious Diseases and Global Medicine, Department of Neuroscience (T.C.F.), University of Florida College of Medicine, Gainesville; Department of Nutrition and Integrative Physiology (O.L.), Florida State University College of Health and Human Sciences, Tallahassee; Department of Pharmacology and Therapeutics (G.C.), College of Medicine, and Department of Molecular Genetics and Microbiology (R.M.T.), University of Florida; and Section of General Surgery (R.M.T.); North Florida/South Georgia Veterans Health System, Gainesville, Florida
| | - Ryan M. Thomas
- From the Department of Surgery (P.A.E., D.B.D., J.M., L.K., B.F., D.C.N., R.F.U., M.L.D., J.R., F.A.M., S.C.B., L.L.M., A.M.M., R.M.T.), Department of Aging and Geriatric Research (P.A.E., R.T.M., C.L.), Department of Medicine (E.C.L.), and Division of Infectious Diseases and Global Medicine, Department of Neuroscience (T.C.F.), University of Florida College of Medicine, Gainesville; Department of Nutrition and Integrative Physiology (O.L.), Florida State University College of Health and Human Sciences, Tallahassee; Department of Pharmacology and Therapeutics (G.C.), College of Medicine, and Department of Molecular Genetics and Microbiology (R.M.T.), University of Florida; and Section of General Surgery (R.M.T.); North Florida/South Georgia Veterans Health System, Gainesville, Florida
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Effects of broad-spectrum antibiotics on the colonisation of probiotic yeast Saccharomyces boulardii in the murine gastrointestinal tract. Sci Rep 2022; 12:8862. [PMID: 35614092 PMCID: PMC9133042 DOI: 10.1038/s41598-022-12806-0] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2022] [Accepted: 04/19/2022] [Indexed: 11/24/2022] Open
Abstract
Mouse models are commonly used to study the colonisation profiles of microorganisms introduced to the gastrointestinal tract. Three commonly used mouse models include conventional, germ-free, and antibiotic-treated mice. However, colonisation resistance in conventional mice and specialised equipment for germ-free mice are usually limiting factors in their applications. In this study, we sought to establish a robust colonisation model for Saccharomyces boulardii, a probiotic yeast that has caught attention in the field of probiotics and advanced microbiome therapeutics. We characterised the colonisation of S. boulardii in conventional mice and mice treated with a cocktail of broad-spectrum antibiotics, including ampicillin, kanamycin, metronidazole and vancomycin. We found colonisation levels increased up to 10,000-fold in the antibiotic-treated mice compared to nonantibiotic-treated mice. Furthermore, S. boulardii was detected continuously in more than 75% of mice for 10 days after the last administration in antibiotic-treated mice, in contrast to in nonantibiotic-treated mice where S. boulardii was undetectable in less than 2 days. Finally, we demonstrated that this antibiotic cocktail can be used in two commonly used mouse strains, C57BL/6 and ob/ob mice, both achieving ~ 108 CFU/g of S. boulardii in faeces. These findings highlight that the antibiotic cocktail used in this study is an advantageous tool to study S. boulardii based probiotic and advanced microbiome therapeutics.
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Goldsmith R, Aburahma A, Pachhain S, Choudhury SR, Phuntumart V, Larsen R, Ward CS, Sprague JE. Reversal of temperature responses to methylone mediated through bi-directional fecal microbiota transplantation between hyperthermic tolerant and naïve rats. Temperature (Austin) 2022; 9:318-330. [PMID: 36339093 PMCID: PMC9629120 DOI: 10.1080/23328940.2022.2069965] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
Abstract
The synthetic cathinone ("bath salt") methylone induces a hyperthermia response and with chronic administration tolerance to this hyperthermia has been reported. The microbiome-gut-brain axis has been implicated in multiple bodily systems and pathologies, and intentional manipulation of the gut-microbiome has yielded clinically significant results. Here, we examined the effects of bi-directional Fecal Microbiota Transplantation (FMT) between methylone-induced hyperthermic tolerant (MHT) and methylone-naïve (MN) rats. Rats treated with methylone once per week developed tolerance to methylone-induced hyperthermia by the fourth week. Once tolerant, daily bi-directional FMT between the two groups were performed for seven days prior to the next methylone treatment. The FMT abated the developed tolerance in the MHT group. When treated with methylone for the first time following FMT, recipient MN rats displayed significant tolerance to hyperthermia despite it being their initial drug treatment. Post-FMT, MHT rats displayed elevations in norepinephrine and expression of UCP1, UCP3 and TGR5 in brown adipose tissue, with reductions in expression of TGR5 and UCP3 in skeletal muscle. The pre- and post-FMT methylone tolerance phenotypes of transplant recipients are concurrent with changes in the relative abundance of several classes of Proteobacteria, most evident for Gammaproteobacteria and Alphaproteobacteria. MHT recipients demonstrated a marked increase in the relative proportion of the Firmicutes class Erysipelotrichia. These findings suggest that transplantation of gut-microbiomes can confer phenotypic responses to a drug and that the microbiome may be playing a major role in sympathomimetic-mediated hyperthermia. Abbreviations: 3,4-methylenedioxymethamphetamine (MDMA); methylone-induced hyperthermic tolerant (MHT); methylone-naïve (MN); fecal microbiota transplantation (FMT); uncoupling protein (UCP); subcutaneous (sc); intraperitoneal (ip); brown adipose tissue (BAT); skeletal muscle (SKM); sympathetic nervous system (SNS); norepinephrine (NE); quantitative PCR (qRT-PCR); quantification cycle (Cq); High Performance Liquid Chromatography-Electrochemical Detection (HPLC-EC); amplicon sequence variants (ASVs); principal coordinates analysis (PCoA); permutational multivariate analysis (PERMANOVA).
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Affiliation(s)
- Robert Goldsmith
- The Ohio Attorney General’s Center for the Future of Forensic Science, Bowling Green State University, Bowling Green, OH, USA
| | - Amal Aburahma
- The Ohio Attorney General’s Center for the Future of Forensic Science, Bowling Green State University, Bowling Green, OH, USA
| | - Sudhan Pachhain
- The Department of Biological Sciences, Bowling Green State University, Bowling Green, OH, USA
| | - Sayantan Roy Choudhury
- The Department of Biological Sciences, Bowling Green State University, Bowling Green, OH, USA
| | - Vipa Phuntumart
- The Department of Biological Sciences, Bowling Green State University, Bowling Green, OH, USA
| | - Ray Larsen
- The Department of Biological Sciences, Bowling Green State University, Bowling Green, OH, USA
| | - Christopher S. Ward
- The Department of Biological Sciences, Bowling Green State University, Bowling Green, OH, USA
| | - Jon E. Sprague
- The Ohio Attorney General’s Center for the Future of Forensic Science, Bowling Green State University, Bowling Green, OH, USA
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Evolution of the murine gut resistome following broad-spectrum antibiotic treatment. Nat Commun 2022; 13:2296. [PMID: 35484157 PMCID: PMC9051133 DOI: 10.1038/s41467-022-29919-9] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2021] [Accepted: 04/06/2022] [Indexed: 12/29/2022] Open
Abstract
The emergence and spread of antimicrobial resistance (AMR) represent an ever-growing healthcare challenge worldwide. Nevertheless, the mechanisms and timescales shaping this resistome remain elusive. Using an antibiotic cocktail administered to a murine model along with a longitudinal sampling strategy, we identify the mechanisms by which gut commensals acquire antimicrobial resistance genes (ARGs) after a single antibiotic course. While most of the resident bacterial populations are depleted due to the treatment, Akkermansia muciniphila and members of the Enterobacteriaceae, Enterococcaceae, and Lactobacillaceae families acquire resistance and remain recalcitrant. We identify specific genes conferring resistance against the antibiotics in the corresponding metagenome-assembled genomes (MAGs) and trace their origins within each genome. Here we show that, while mobile genetic elements (MGEs), including bacteriophages and plasmids, contribute to the spread of ARGs, integrons represent key factors mediating AMR in the antibiotic-treated mice. Our findings suggest that a single course of antibiotics alone may act as the selective sweep driving ARG acquisition and incidence in gut commensals over a single mammalian lifespan. Antimicrobial resistance represents an ongoing silent pandemic. Here, de Nies et al. show that a single antibiotic treatment leads to resistance in bacteria such as Akkermansia muciniphila and that integrons play a key role in mediating this resistance.
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29
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Wong EOY, Brownlie EJE, Ng KM, Kathirgamanathan S, Yu FB, Merrill BD, Huang KC, Martin A, Tropini C, Navarre WW. The CIAMIB: a Large and Metabolically Diverse Collection of Inflammation-Associated Bacteria from the Murine Gut. mBio 2022; 13:e0294921. [PMID: 35266814 PMCID: PMC9040815 DOI: 10.1128/mbio.02949-21] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2021] [Accepted: 02/09/2022] [Indexed: 02/07/2023] Open
Abstract
Gut inflammation directly impacts the growth and stability of commensal gut microbes and can lead to long-lasting changes in microbiota composition that can prolong or exacerbate disease states. While mouse models are used extensively to investigate the interplay between microbes and the inflamed state, the paucity of cultured mouse gut microbes has hindered efforts to determine causal relationships. To address this issue, we are assembling the Collection of Inflammation-Associated Mouse Intestinal Bacteria (CIAMIB). The initial release of this collection comprises 41 isolates of 39 unique bacterial species, covering 4 phyla and containing 10 previously uncultivated isolates, including 1 novel family and 7 novel genera. The collection significantly expands the number of available Muribaculaceae, Lachnospiraceae, and Coriobacteriaceae isolates and includes microbes from genera associated with inflammation, such as Prevotella and Klebsiella. We characterized the growth of CIAMIB isolates across a diverse range of nutritional conditions and predicted their metabolic potential and anaerobic fermentation capacity based on the genomes of these isolates. We also provide the first metabolic analysis of species within the genus Adlercreutzia, revealing these representatives to be nitrate-reducing and severely restricted in their ability to grow on carbohydrates. CIAMIB isolates are fully sequenced and available to the scientific community as a powerful tool to study host-microbiota interactions. IMPORTANCE Attempts to explore the role of the microbiota in animal physiology have resulted in large-scale efforts to cultivate the thousands of microbes that are associated with humans. In contrast, relatively few lab mouse-associated bacteria have been isolated, despite the fact that the overwhelming number of studies on the microbiota use laboratory mice that are colonized with microbes that are quite distinct from those in humans. Here, we report the results of a large-scale isolation of bacteria from the intestines of laboratory mice either prone to or suffering from gut inflammation. This collection comprises dozens of novel isolates, many of which represent the only cultured representatives of their genus or species. We report their basic growth characteristics and genomes and are making them widely available to the greater research community.
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Affiliation(s)
- Erin Oi-Yan Wong
- Department of Molecular Genetics, University of Toronto, Toronto, Ontario, Canada
| | | | - Katharine Michelle Ng
- School of Biomedical Engineering, University of British Columbia, Vancouver, Canada
- Department of Microbiology and Immunology, University of British Columbia, Vancouver, Canada
| | | | | | - Bryan D. Merrill
- Department of Microbiology and Immunology, Stanford University of School of Medicine, Stanford, California, USA
| | - Kerwyn Casey Huang
- Chan Zuckerberg Biohub, San Francisco, California, USA
- Department of Microbiology and Immunology, Stanford University of School of Medicine, Stanford, California, USA
- Department of Bioengineering, Stanford University, Stanford, California, USA
| | - Alberto Martin
- Department of Immunology, University of Toronto, Toronto, Ontario, Canada
| | - Carolina Tropini
- School of Biomedical Engineering, University of British Columbia, Vancouver, Canada
- Department of Microbiology and Immunology, University of British Columbia, Vancouver, Canada
- Humans and the Microbiome Program, Canadian Institute for Advanced Research, Toronto, Canada
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30
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Grzymajlo K. The Game for Three: Salmonella–Host–Microbiota Interaction Models. Front Microbiol 2022; 13:854112. [PMID: 35516427 PMCID: PMC9062650 DOI: 10.3389/fmicb.2022.854112] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2022] [Accepted: 03/11/2022] [Indexed: 11/16/2022] Open
Abstract
Colonization of the gastrointestinal (GI) tract by enteric pathogens occurs in a context strongly determined by host-specific gut microbiota, which can significantly affect the outcome of infection. The complex gameplay between the trillions of microbes that inhabit the GI tract, the host, and the infecting pathogen defines a specific triangle of interaction; therefore, a complete model of infection should consider all of these elements. Many different infection models have been developed to explain the complexity of these interactions. This review sheds light on current knowledge, along with the strengths and limitations of in vitro and in vivo models utilized in the study of Salmonella–host–microbiome interactions. These models range from the simplest experiment simulating environmental conditions using dedicated growth media through in vitro interaction with cell lines and 3-D organoid structure, and sophisticated “gut on a chip” systems, ending in various animal models. Finally, the challenges facing this field of research and the important future directions are outlined.
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31
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Bodnar TS, Lee C, Wong A, Rubin I, Parfrey LW, Weinberg J. Evidence for long-lasting alterations in the fecal microbiota following prenatal alcohol exposure. Alcohol Clin Exp Res 2022; 46:542-555. [PMID: 35102585 PMCID: PMC9238389 DOI: 10.1111/acer.14784] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2021] [Revised: 01/23/2022] [Accepted: 01/26/2022] [Indexed: 12/12/2022]
Abstract
BACKGROUND There is growing evidence that the gut microbiota can be shaped by early-life experiences/exposures, with long-term consequences for brain, behavior, and health. Changes in the gut microbiota have also been identified in neurodevelopmental disorders including Autism Spectrum Disorder and schizophrenia. In contrast, no studies to date have investigated whether the gut microbiota is altered in individuals with Fetal Alcohol Spectrum Disorder (FASD), the neurodevelopmental disorder that results from prenatal alcohol exposure (PAE). The current study was designed to assess the impact of PAE on the fecal microbiota. METHODS We used a rodent model in which pregnant Sprague-Dawley rats were provided with an EtOH-containing diet or a control diet throughout gestation. Fecal samples were collected from adult male and female animals and 16s rRNA sequencing was performed. RESULTS Overall, PAE rats showed greater richness of bacterial species, with community structure investigations demonstrating distinct clustering by prenatal treatment. In addition, prenatal treatment and sex-specific alterations were observed for many specific microbes. For example, in males, Bacteroides and Bifidobacterium, and in females, Faecalitalea and Proteus, differed in abundance between PAE and control rats. CONCLUSIONS Taken together, these results show for the first time that PAE has a long-lasting and sex-specific impact on the fecal microbiota. Further research is needed that considers fetal microbiota in the development of new interventions in FASD.
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Affiliation(s)
- Tamara S. Bodnar
- Department of Cellular and Physiological Sciences, 2350 Health Sciences Mall, University of British Columbia, Vancouver, BC, Canada, V6T 1Z3
| | - Christopher Lee
- Department of Microbiology and Immunology, 2185 E Mall, University of British Columbia, Vancouver, BC, Canada, V6T 1Z4
| | - Athena Wong
- Department of Biology, 6270 University Blvd, University of British Columbia, Vancouver, BC, Canada, V6T 1Z4
| | - Ilan Rubin
- Department of Zoology, 6270 University Blvd, University of British Columbia, Vancouver, BC, Canada, V6T 1Z4
| | - Laura Wegener Parfrey
- Department of Botany and Biodiversity Research Centre, University of British Columbia, 109 – 2212 Main Mall, Vancouver, BC, Canada, V6T 1Z4
| | - Joanne Weinberg
- Department of Cellular and Physiological Sciences, 2350 Health Sciences Mall, University of British Columbia, Vancouver, BC, Canada, V6T 1Z3
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Rani A, Barter J, Kumar A, Stortz JA, Hollen M, Nacionales D, Moldawer LL, Efron PA, Foster TC. Influence of age and sex on microRNA response and recovery in the hippocampus following sepsis. Aging (Albany NY) 2022; 14:728-746. [PMID: 35094981 PMCID: PMC8833110 DOI: 10.18632/aging.203868] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2021] [Accepted: 01/20/2022] [Indexed: 11/25/2022]
Abstract
Sepsis, defined as a dysregulated host immune response to infection, is a common and dangerous clinical syndrome. The excessive host inflammatory response can induce immediate and persistent cognitive decline, which can be worse in older individuals. Sex-specific differences in the outcome of infectious diseases and sepsis appear to favor females. We employed a murine model to examine the influence of age and sex on the brain's microRNA (miR) response following sepsis. Young and old mice of both sexes underwent cecal ligation and puncture (CLP) with daily restraint stress. Expression of hippocampal miR was examined in age- and sex-matched controls at 1 and 4 days post-CLP. Few miR were modified in a similar manner across age or sex and these few miR were generally associated with neuroprotection against inflammation. Similar to previous work examining transcription, young females exhibited a better recovery of the miR profile from day 1 to day 4, relative to young males and old females. For young males and all female groups, the initial response mainly involved a decrease in miR expression. In contrast, old males exhibited only upregulated miR on day 1 and day 4 and many of the miR upregulated on day 1 and day 4 were linked to neurodegeneration, increased neuroinflammation, and cognitive impairment. The results emphasize age and sex differences in epigenetic mechanisms that likely contribute to susceptibility or resilience to cognitive impairment due to sepsis.
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Affiliation(s)
- Asha Rani
- Department of Neuroscience, McKnight Brain Institute, University of Florida, Gainesville, FL 32611, USA
| | - Jolie Barter
- Department of Neuroscience, McKnight Brain Institute, University of Florida, Gainesville, FL 32611, USA
| | - Ashok Kumar
- Department of Neuroscience, McKnight Brain Institute, University of Florida, Gainesville, FL 32611, USA
| | - Julie A Stortz
- Department of Surgery, University of Florida, Gainesville, FL 32611, USA
| | - McKenzie Hollen
- Department of Surgery, University of Florida, Gainesville, FL 32611, USA
| | - Dina Nacionales
- Department of Surgery, University of Florida, Gainesville, FL 32611, USA
| | - Lyle L Moldawer
- Department of Surgery, University of Florida, Gainesville, FL 32611, USA
| | - Philip A Efron
- Department of Surgery, University of Florida, Gainesville, FL 32611, USA
| | - Thomas C Foster
- Department of Neuroscience, McKnight Brain Institute, University of Florida, Gainesville, FL 32611, USA.,Genetics and Genomics Program, University of Florida, Gainesville, FL 32611, USA
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Abstract
Environmental chemicals can alter gut microbial community composition, known as dysbiosis. However, the gut microbiota is a highly dynamic system and its functions are still largely underexplored. Likewise, it is unclear whether xenobiotic exposure affects host health through impairing host-microbiota interactions. Answers to this question not only can lead to a more precise understanding of the toxic effects of xenobiotics but also can provide new targets for the development of new therapeutic strategies. Here, we aim to identify the major challenges in the field of microbiota-exposure research and highlight the need to exam the health effects of xenobiotic-induced gut microbiota dysbiosis in host bodies. Although the changes of gut microbiota frequently co-occur with the xenobiotic exposure, the causal relationship of xenobiotic-induced microbiota dysbiosis and diseases is rarely established. The high dynamics of the gut microbiota and the complex interactions among exposure, microbiota, and host, are the major challenges to decipher the specific health effects of microbiota dysbiosis. The next stage of study needs to combine various technologies to precisely assess the xenobiotic-induced gut microbiota perturbation and the subsequent health effects in host bodies. The exposure, gut microbiota dysbiosis, and disease outcomes have to be causally linked. Many microbiota-host interactions are established by previous studies, including signaling metabolites and response pathways in the host, which may use as start points for future research to examine the mechanistic interactions of exposure, gut microbiota, and host health. In conclusion, to precisely understand the toxicity of xenobiotics and develop microbiota-based therapies, the causal and mechanistic links of exposure and microbiota dysbiosis have to be established in the next stage study.
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Affiliation(s)
- Liang Chi
- Department of Environmental Sciences and Engineering, University of North Carolina at Chapel Hill, NC, United States
| | - Pengcheng Tu
- Department of Environmental Sciences and Engineering, University of North Carolina at Chapel Hill, NC, United States
| | - Hongyu Ru
- Department of Environmental Sciences and Engineering, University of North Carolina at Chapel Hill, NC, United States
| | - Kun Lu
- Department of Environmental Sciences and Engineering, University of North Carolina at Chapel Hill, NC, United States,CONTACT Kun Lu Department of Environmental Sciences and Engineering, University of North Carolina at Chapel Hill, NC27599, United States
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Thurman CE, Klores MM, Wolfe AE, Poueymirou WT, Levee EM, Ericsson AC, Franklin CL, Reddyjarugu B. Effect of Housing Condition and Diet on the Gut Microbiota of Weanling Immunocompromised Mice. Comp Med 2021; 71:485-491. [PMID: 34782034 PMCID: PMC8718622 DOI: 10.30802/aalas-cm-21-000015] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Gastrointestinal microbiota are affected by a wide variety of extrinsic and intrinsic factors. In the husbandry of laboratory mice and design of experiments, controlling these factors where possible provides more reproducible results. However, the microbiome is dynamic, particularly in the weeks immediately after weaning. In this study, we characterized the baseline gastrointestinal microbiota of immunocompromised mice housed under standard conditions for our facility for 6 weeks after weaning, with housing either in an isolator or in individually ventilated cages and a common antibiotic diet (trimethoprim sulfamethoxazole). We compared these conditions to a group fed a standard diet and a group that was weaned to a standard diet then switched to antibiotic diet after 2 weeks. We found no clear effect of diet on richness and α diversity of the gastrointestinal microbiota. However, diet did affect which taxa were enriched at the end of the experiment. The change to antibiotic diet during the experiment did not convert the gastrointestinal microbiome to a state similar to mice consistently fed antibiotic diet, which may highlight the importance of the initial post-weaning period in the establishment of the gastrointestinal microbiome. We also observed a strong effect of housing type (isolator compared with individually ventilated cage) on the richness, α diversity, β diversity, and taxa enriched over the course of the experiment. Investigating whether the diet or microbiome affects a certain strain's phenotype is warranted in some cases. However, our findings do not suggest that maintaining immunocompromised mice on antibiotic feed has a clinical benefit when potential pathogens are operationally excluded, nor does it result in a more consistent or controlled microbiome in the post-weaning period.
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Affiliation(s)
- Colleen E Thurman
- Regeneron Pharmaceuticals, Tarrytown, New York; NYU-Regeneron Training Program in Laboratory Animal Medicine, New York, New York; Animal Science Center, Boston University, Boston, Massachusetts;,
| | - Molly M Klores
- Regeneron Pharmaceuticals, Tarrytown, New York;,NYU-Regeneron Training Program in Laboratory Animal Medicine, New York, New York
| | - Annie E Wolfe
- Department of Veterinary Pathobiology, University of Missouri College of Veterinary Medicine
| | | | - Ellen M Levee
- Regeneron Pharmaceuticals, Tarrytown, New York;,NYU-Regeneron Training Program in Laboratory Animal Medicine, New York, New York
| | - Aaron C Ericsson
- Department of Veterinary Pathobiology, University of Missouri College of Veterinary Medicine,,University of Missouri Metagenomics Center, and,MU Mutant Mouse Resource and Research Center, University of Missouri, Columbia, Missouri
| | - Craig L Franklin
- Department of Veterinary Pathobiology, University of Missouri College of Veterinary Medicine,,University of Missouri Metagenomics Center, and,MU Mutant Mouse Resource and Research Center, University of Missouri, Columbia, Missouri
| | - Balu Reddyjarugu
- Regeneron Pharmaceuticals, Tarrytown, New York;,NYU-Regeneron Training Program in Laboratory Animal Medicine, New York, New York
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Ho H, Kikuchi K, Oikawa D, Watanabe S, Kanemitsu Y, Saigusa D, Kujirai R, Ikeda‐Ohtsubo W, Ichijo M, Akiyama Y, Aoki Y, Mishima E, Ogata Y, Oikawa Y, Matsuhashi T, Toyohara T, Suzuki C, Suzuki T, Mano N, Kagawa Y, Owada Y, Katayama T, Nakayama T, Tomioka Y, Abe T. SGLT-1-specific inhibition ameliorates renal failure and alters the gut microbial community in mice with adenine-induced renal failure. Physiol Rep 2021; 9:e15092. [PMID: 34921520 PMCID: PMC8683788 DOI: 10.14814/phy2.15092] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2021] [Revised: 09/20/2021] [Accepted: 10/13/2021] [Indexed: 12/25/2022] Open
Abstract
Sodium-dependent glucose cotransporters (SGLTs) have attracted considerable attention as new targets for type 2 diabetes mellitus. In the kidney, SGLT2 is the major glucose uptake transporter in the proximal tubules, and inhibition of SGLT2 in the proximal tubules shows renoprotective effects. On the other hand, SGLT1 plays a role in glucose absorption from the gastrointestinal tract, and the relationship between SGLT1 inhibition in the gut and renal function remains unclear. Here, we examined the effect of SGL5213, a novel and potent intestinal SGLT1 inhibitor, in a renal failure (RF) model. SGL5213 improved renal function and reduced gut-derived uremic toxins (phenyl sulfate and trimethylamine-N-oxide) in an adenine-induced RF model. Histological analysis revealed that SGL5213 ameliorated renal fibrosis and inflammation. SGL5213 also reduced gut inflammation and fibrosis in the ileum, which is a primary target of SGL5213. Examination of the gut microbiota community revealed that the Firmicutes/Bacteroidetes ratio, which suggests gut dysbiosis, was increased in RF and SGL5213 rebalanced the ratio by increasing Bacteroidetes and reducing Firmicutes. At the genus level, Allobaculum (a major component of Erysipelotrichaceae) was significantly increased in the RF group, and this increase was canceled by SGL5213. We also measured the effect of SGL5213 on bacterial phenol-producing enzymes that catalyze tyrosine into phenol, following the reduction of phenyl sulfate, which is a novel marker and a therapeutic target for diabetic kidney disease DKD. We found that the enzyme inhibition was less potent, suggesting that the change in the microbial community and the reduction of uremic toxins may be related to the renoprotective effect of SGL5213. Because SGL5213 is a low-absorbable SGLT1 inhibitor, these data suggest that the gastrointestinal inhibition of SGLT1 is also a target for chronic kidney diseases.
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Affiliation(s)
- Hsin‐Jung Ho
- Department of Medical ScienceTohoku University Graduate School of Biomedical EngineeringSendaiJapan
- Division of Nephrology, Endocrinology and Vascular MedicineTohoku University Graduate School of MedicineSendaiJapan
| | - Koichi Kikuchi
- Division of Nephrology, Endocrinology and Vascular MedicineTohoku University Graduate School of MedicineSendaiJapan
- Department of Medical MegabankTohoku UniversitySendaiJapan
| | - Daiki Oikawa
- Department of Biomolecular Engineering Applied Life ChemistryTohoku University Graduate School of EngineeringSendaiJapan
| | - Shun Watanabe
- Division of Nephrology, Endocrinology and Vascular MedicineTohoku University Graduate School of MedicineSendaiJapan
- Department of Clinical Biology and Hormonal RegulationTohoku University Graduate School of MedicineSendaiJapan
| | | | - Daisuke Saigusa
- Department of Integrative Genomics, Tohoku Medical Megabank OrganizationTohoku UniversitySendaiJapan
| | - Ryota Kujirai
- Laboratory of OncologyPharmacy Practice and SciencesTohoku University Graduate School of Pharmaceutical SciencesSendaiJapan
| | - Wakako Ikeda‐Ohtsubo
- Laboratory of Animal Products ChemistryGraduate School of Agricultural ScienceTohoku UniversitySendaiJapan
| | - Mariko Ichijo
- Division of Nephrology, Endocrinology and Vascular MedicineTohoku University Graduate School of MedicineSendaiJapan
| | - Yukako Akiyama
- Division of Nephrology, Endocrinology and Vascular MedicineTohoku University Graduate School of MedicineSendaiJapan
| | - Yuichi Aoki
- Department of Integrative Genomics, Tohoku Medical Megabank OrganizationTohoku UniversitySendaiJapan
| | - Eikan Mishima
- Division of Nephrology, Endocrinology and Vascular MedicineTohoku University Graduate School of MedicineSendaiJapan
| | - Yoshiaki Ogata
- Department of Clinical Biology and Hormonal RegulationTohoku University Graduate School of MedicineSendaiJapan
| | - Yoshitsugu Oikawa
- Department of PediatricsTohoku University Graduate School of MedicineSendaiJapan
| | - Tetsuro Matsuhashi
- Department of PediatricsTohoku University Graduate School of MedicineSendaiJapan
| | - Takafumi Toyohara
- Department of Medical ScienceTohoku University Graduate School of Biomedical EngineeringSendaiJapan
- Division of Nephrology, Endocrinology and Vascular MedicineTohoku University Graduate School of MedicineSendaiJapan
| | - Chitose Suzuki
- Division of Nephrology, Endocrinology and Vascular MedicineTohoku University Graduate School of MedicineSendaiJapan
| | - Takehiro Suzuki
- Department of Medical ScienceTohoku University Graduate School of Biomedical EngineeringSendaiJapan
- Division of Nephrology, Endocrinology and Vascular MedicineTohoku University Graduate School of MedicineSendaiJapan
| | - Nariyasu Mano
- Department of Pharmaceutical SciencesTohoku University HospitalSendaiJapan
| | - Yoshiteru Kagawa
- Department of Organ AnatomyTohoku University Graduate School of MedicineSendaiJapan
| | - Yuji Owada
- Department of Organ AnatomyTohoku University Graduate School of MedicineSendaiJapan
| | - Takane Katayama
- Laboratory of Molecular Biology of BioresponseGraduate School of BiostudiesKyoto UniversityKyotoJapan
| | - Toru Nakayama
- Department of Biomolecular Engineering Applied Life ChemistryTohoku University Graduate School of EngineeringSendaiJapan
| | - Yoshihisa Tomioka
- Laboratory of Molecular Biology of BioresponseGraduate School of BiostudiesKyoto UniversityKyotoJapan
| | - Takaaki Abe
- Department of Medical ScienceTohoku University Graduate School of Biomedical EngineeringSendaiJapan
- Division of Nephrology, Endocrinology and Vascular MedicineTohoku University Graduate School of MedicineSendaiJapan
- Department of Clinical Biology and Hormonal RegulationTohoku University Graduate School of MedicineSendaiJapan
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Darnaud M, De Vadder F, Bogeat P, Boucinha L, Bulteau AL, Bunescu A, Couturier C, Delgado A, Dugua H, Elie C, Mathieu A, Novotná T, Ouattara DA, Planel S, Saliou A, Šrůtková D, Yansouni J, Stecher B, Schwarzer M, Leulier F, Tamellini A. A standardized gnotobiotic mouse model harboring a minimal 15-member mouse gut microbiota recapitulates SOPF/SPF phenotypes. Nat Commun 2021; 12:6686. [PMID: 34795236 PMCID: PMC8602333 DOI: 10.1038/s41467-021-26963-9] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2020] [Accepted: 10/28/2021] [Indexed: 01/14/2023] Open
Abstract
Mus musculus is the classic mammalian model for biomedical research. Despite global efforts to standardize breeding and experimental procedures, the undefined composition and interindividual diversity of the microbiota of laboratory mice remains a limitation. In an attempt to standardize the gut microbiome in preclinical mouse studies, here we report the development of a simplified mouse microbiota composed of 15 strains from 7 of the 20 most prevalent bacterial families representative of the fecal microbiota of C57BL/6J Specific (and Opportunistic) Pathogen-Free (SPF/SOPF) animals and the derivation of a standardized gnotobiotic mouse model called GM15. GM15 recapitulates extensively the functionalities found in the C57BL/6J SOPF microbiota metagenome, and GM15 animals are phenotypically similar to SOPF or SPF animals in two different facilities. They are also less sensitive to the deleterious effects of post-weaning malnutrition. In this work, we show that the GM15 model provides increased reproducibility and robustness of preclinical studies by limiting the confounding effect of fluctuation in microbiota composition, and offers opportunities for research focused on how the microbiota shapes host physiology in health and disease.
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Affiliation(s)
- Marion Darnaud
- BIOASTER, Institut de Recherche Technologique, 40 avenue Tony Garnier, 69007, Lyon, France.
| | - Filipe De Vadder
- Institut de Génomique Fonctionnelle de Lyon, Université de Lyon, Ecole Normale Supérieure de Lyon, Centre National de la Recherche Scientifique, Université Claude Bernard Lyon 1, Unité Mixte de Recherche 5242, 46 Allée d'Italie, 69364, Lyon, Cedex, 07, France
| | - Pascaline Bogeat
- BIOASTER, Institut de Recherche Technologique, 40 avenue Tony Garnier, 69007, Lyon, France
| | - Lilia Boucinha
- BIOASTER, Institut de Recherche Technologique, 40 avenue Tony Garnier, 69007, Lyon, France
| | - Anne-Laure Bulteau
- Institut de Génomique Fonctionnelle de Lyon, Université de Lyon, Ecole Normale Supérieure de Lyon, Centre National de la Recherche Scientifique, Université Claude Bernard Lyon 1, Unité Mixte de Recherche 5242, 46 Allée d'Italie, 69364, Lyon, Cedex, 07, France
| | - Andrei Bunescu
- BIOASTER, Institut de Recherche Technologique, 40 avenue Tony Garnier, 69007, Lyon, France
| | - Céline Couturier
- BIOASTER, Institut de Recherche Technologique, 40 avenue Tony Garnier, 69007, Lyon, France
| | - Ana Delgado
- BIOASTER, Institut de Recherche Technologique, 40 avenue Tony Garnier, 69007, Lyon, France
| | - Hélène Dugua
- BIOASTER, Institut de Recherche Technologique, 40 avenue Tony Garnier, 69007, Lyon, France
| | - Céline Elie
- BIOASTER, Institut de Recherche Technologique, 40 avenue Tony Garnier, 69007, Lyon, France
| | - Alban Mathieu
- BIOASTER, Institut de Recherche Technologique, 40 avenue Tony Garnier, 69007, Lyon, France
| | - Tereza Novotná
- Laboratory of Gnotobiology, Institute of Microbiology of the Czech Academy of Sciences, 54922, Nový Hrádek, Czech Republic
| | | | - Séverine Planel
- BIOASTER, Institut de Recherche Technologique, 40 avenue Tony Garnier, 69007, Lyon, France
| | - Adrien Saliou
- BIOASTER, Institut de Recherche Technologique, 40 avenue Tony Garnier, 69007, Lyon, France
| | - Dagmar Šrůtková
- Laboratory of Gnotobiology, Institute of Microbiology of the Czech Academy of Sciences, 54922, Nový Hrádek, Czech Republic
| | - Jennifer Yansouni
- BIOASTER, Institut de Recherche Technologique, 40 avenue Tony Garnier, 69007, Lyon, France
| | - Bärbel Stecher
- Max von Pettenkofer Institute of Hygiene and Medical Microbiology, Ludwig-Maximilians-University of Munich, 80336, Munich, Germany
- German Center for Infection Research (DZIF), Partner Site, Munich, Germany
| | - Martin Schwarzer
- Laboratory of Gnotobiology, Institute of Microbiology of the Czech Academy of Sciences, 54922, Nový Hrádek, Czech Republic
| | - François Leulier
- BIOASTER, Institut de Recherche Technologique, 40 avenue Tony Garnier, 69007, Lyon, France
- Institut de Génomique Fonctionnelle de Lyon, Université de Lyon, Ecole Normale Supérieure de Lyon, Centre National de la Recherche Scientifique, Université Claude Bernard Lyon 1, Unité Mixte de Recherche 5242, 46 Allée d'Italie, 69364, Lyon, Cedex, 07, France
| | - Andrea Tamellini
- BIOASTER, Institut de Recherche Technologique, 40 avenue Tony Garnier, 69007, Lyon, France
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Chaffringeon L, Lamy-Besnier Q, Debarbieux L, De Sordi L. The intestinal virome: lessons from animal models. Curr Opin Virol 2021; 51:141-148. [PMID: 34700287 DOI: 10.1016/j.coviro.2021.09.016] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2021] [Revised: 09/21/2021] [Accepted: 09/29/2021] [Indexed: 12/28/2022]
Abstract
Mucosal surfaces in contact with the environment host specific microbiota. The intestinal tract harbours the most abundant and diverse bacterial and viral populations interacting with each other as well as with the host. Viruses of the microbiota are important components of this ecosystem, as shown by viral alterations associated with various pathologies. However, practical and ethical constraints limit functional studies of the virome in humans, making animal models invaluable experimental tools to understand its impact on intestinal physiology. In this review, we present the recent advances in the study of virome in animal models. We focus on the strategies used to characterise viral changes in disease models and approaches to modulate the microbiota using viruses. In reviewing the interplay between viruses, bacteria, and the animal host, we highlight the potential and limitations of these models in elucidating the role of the virome in determining human health and disease.
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Affiliation(s)
- Lorenzo Chaffringeon
- Sorbonne Université, INSERM, Centre de Recherche St Antoine, UMRS_938, Paris, France; Department of Microbiology, Institut Pasteur, Paris, F-75015, France; Paris Center for Microbiome Medicine (PaCeMM) FHU, AP-HP, Paris, France
| | - Quentin Lamy-Besnier
- Department of Microbiology, Institut Pasteur, Paris, F-75015, France; Université de Paris, Paris, France
| | | | - Luisa De Sordi
- Sorbonne Université, INSERM, Centre de Recherche St Antoine, UMRS_938, Paris, France; Paris Center for Microbiome Medicine (PaCeMM) FHU, AP-HP, Paris, France.
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38
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Spiroux de Vendômois J, Bourdineaud JP, Apoteker A, Defarge N, Gaillard E, Lepage C, Testart J, Vélot C. Trans-disciplinary diagnosis for an in-depth reform of regulatory expertise in the field of environmental toxicology and security. Toxicol Res 2021; 37:405-419. [PMID: 34631497 DOI: 10.1007/s43188-020-00075-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2020] [Revised: 09/18/2020] [Accepted: 11/04/2020] [Indexed: 02/07/2023] Open
Abstract
Repeated health and environmental scandals, the loss of biodiversity and the recent burst of chronic diseases constantly remind us the inability of public authorities and risk assessment agencies to protect health and the environment. After reviewing the main shortcomings of our evaluation system of chemicals and new technologies, supported by some concrete examples, we develop a number of proposals to reform both the risk assessment agencies and the evaluation processes. We especially propose the establishment of an independent structure, a High Authority of Expertise, supervising, either at European level or at national level, all the evaluation agencies, and ensuring the transparency, the methodology and the deontology of the expertise. In addition to modifying the evaluation protocols, both in their nature and in their content, especially in order to adapt them to current pollutants such as endocrine disruptors, we propose a reform of the expertise processes based on transparency, contradiction, and greater democracy, including close collaboration between the institutional and scientific parties on the one hand and the whole civil society on the other. All the proposals we make are inspired by the desire to prevent, through appropriate mechanisms, the human, health, ecological, but also economic consequences of contemporary technological choices.
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Affiliation(s)
- Joël Spiroux de Vendômois
- Committee for Independent Research and Information on Genetic Engineering (CRIIGEN), 42 rue de Lisbonne, 75008 Paris, France
| | - Jean-Paul Bourdineaud
- CNRS, UMR 5234, Laboratory of Fundamental Microbiology and Pathogenicity, European Institute of Chemistry and Biology, University of Bordeaux, Bordeaux, France
| | - Arnaud Apoteker
- Committee for Independent Research and Information on Genetic Engineering (CRIIGEN), 42 rue de Lisbonne, 75008 Paris, France
| | - Nicolas Defarge
- Committee for Independent Research and Information on Genetic Engineering (CRIIGEN), 42 rue de Lisbonne, 75008 Paris, France.,Institute of Integrative Biology IBZ, Swiss Federal Institute of Technology, Universitätstrasse 16, 8092 Zurich, Switzerland
| | - Emilie Gaillard
- Committee for Independent Research and Information on Genetic Engineering (CRIIGEN), 42 rue de Lisbonne, 75008 Paris, France.,Université de Caen-Basse Normandie, Esplanade de la Paix, 14000 Caen, France
| | - Corinne Lepage
- Committee for Independent Research and Information on Genetic Engineering (CRIIGEN), 42 rue de Lisbonne, 75008 Paris, France
| | - Jacques Testart
- Committee for Independent Research and Information on Genetic Engineering (CRIIGEN), 42 rue de Lisbonne, 75008 Paris, France.,Sciences Citoyennes, 38 rue Saint Sabin, 75011 Paris, France
| | - Christian Vélot
- Committee for Independent Research and Information on Genetic Engineering (CRIIGEN), 42 rue de Lisbonne, 75008 Paris, France.,Sciences Citoyennes, 38 rue Saint Sabin, 75011 Paris, France.,Laboratory VEAC, University Paris-Saclay, Faculty of Sciences, Bât. 350-RdC, Avenue Jean Perrin, 91405 Orsay, France.,Risk Pole MRSH-CNRS, EA2608, University of Caen, Esplanade de la Paix, 14032 Caen, France
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39
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de Maria YNLF, Aciole Barbosa D, Menegidio FB, Santos KBNH, Humberto AC, Alencar VC, Silva JFS, Costa de Oliveira R, Batista ML, Nunes LR, Jabes DL. Analysis of mouse faecal dysbiosis, during the development of cachexia, induced by transplantation with Lewis lung carcinoma cells. MICROBIOLOGY (READING, ENGLAND) 2021; 167. [PMID: 34596506 DOI: 10.1099/mic.0.001088] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Cachexia (CC) is a complex wasting syndrome that significantly affects life quality and life expectancy among cancer patients. Original studies, in which CC was induced in mouse models through inoculation with BaF and C26 tumour cells, demonstrated that CC development correlates with bacterial gut dysbiosis in these animals. In both cases, a common microbial signature was observed, based on the expansion of Enterobacteriaceae in the gut of CC animals. However, these two types of tumours induce unique microbial profiles, suggesting that different CC induction mechanisms significantly impact the outcome of gut dysbiosis. The present study sought to expand the scope of such analyses by characterizing the CC-associated dysbiosis that develops when mice are inoculated with Lewis lung carcinoma (LLC) cells, which constitutes one of the most widely employed mechanisms for CC induction. Interestingly, Enterobacteriaceae expansion is also observed in LLC-induced CC. However, the dysbiosis identified herein displays a more complex pattern, involving representatives from seven different bacterial phyla, which were consistently identified across successive levels of taxonomic hierarchy. These results are supported by a predictive analysis of gene content, which identified a series of functional/structural changes that potentially occur in the gut bacterial population of these animals, providing a complementary and alternative approach to microbiome analyses based solely on taxonomic classification.
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Affiliation(s)
- Yara N L F de Maria
- Núcleo Integrado de Biotecnologia, Universidade de Mogi das Cruzes (UMC), Brazil
| | - David Aciole Barbosa
- Núcleo Integrado de Biotecnologia, Universidade de Mogi das Cruzes (UMC), Brazil
| | - Fabiano B Menegidio
- Núcleo Integrado de Biotecnologia, Universidade de Mogi das Cruzes (UMC), Brazil
| | | | | | - Valquíria C Alencar
- Núcleo Integrado de Biotecnologia, Universidade de Mogi das Cruzes (UMC), Brazil
- Centro de Ciências Naturais e Humanas, Universidade Federal do ABC (UFABC), Brazil
| | - Juliana F S Silva
- Centro de Ciências Naturais e Humanas, Universidade Federal do ABC (UFABC), Brazil
| | | | - Miguel L Batista
- Núcleo Integrado de Biotecnologia, Universidade de Mogi das Cruzes (UMC), Brazil
- Department of Biochemistry, Boston University School of Medicine, USA
| | - Luiz R Nunes
- Centro de Ciências Naturais e Humanas, Universidade Federal do ABC (UFABC), Brazil
| | - Daniela L Jabes
- Núcleo Integrado de Biotecnologia, Universidade de Mogi das Cruzes (UMC), Brazil
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40
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Darden DB, Mira JC, Lopez MC, Stortz JA, Fenner BP, Kelly LS, Nacionales DC, Budharaju A, Loftus TJ, Baker HV, Moore FA, Brakenridge SC, Moldawer LL, Mohr AM, Efron PA. Identification of unique microRNA expression patterns in bone marrow hematopoietic stem and progenitor cells after hemorrhagic shock and multiple injuries in young and old adult mice. J Trauma Acute Care Surg 2021; 91:692-699. [PMID: 34252063 PMCID: PMC8463436 DOI: 10.1097/ta.0000000000003350] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
BACKGROUND After severe trauma, the older host experiences more dysfunctional hematopoiesis of bone marrow (BM) hematopoietic stem and progenitor cells (HSPCs), and dysfunctional differentiation of circulating myeloid cells into effective innate immune cells. Our main objective was to compare BM HSPC microRNA (miR) responses of old and young mice in a clinically relevant model of severe trauma and shock. METHODS C57BL/6 adult male mice aged 8 to 12 weeks (young) and 18 to 24 months (old) underwent multiple injuries and hemorrhagic shock (polytrauma [PT]) that engenders the equivalent of major trauma (Injury Severity Score, >15). Pseudomonas pneumonia (PNA) was induced in some young and old adult mice 24 hours after PT. MicroRNA expression patterns were determined from lineage-negative enriched BM HSPCs isolated from PT and PT-PNA mice at 24 and 48 hours postinjury, respectively. Genome-wide expression and pathway analyses were also performed on bronchoalveolar lavage (BAL) leukocytes from both mouse cohorts. RESULTS MicroRNA expression significantly differed among all experimental conditions (p < 0.05), except for old-naive versus old-injured (PT or PT-PNA) mice, suggesting an inability of old mice to mount a robust early miR response to severe shock and injury. In addition, young adult mice had significantly more leukocytes obtained from their BAL, and there were greater numbers of polymorphonuclear cells compared with old mice (59.8% vs. 2.2%, p = 0.0069). Despite increased gene expression changes, BAL leukocytes from old mice demonstrated a more dysfunctional transcriptomic response to PT-PNA than young adult murine BAL leukocytes, as reflected in predicted upstream functional pathway analysis. CONCLUSION The miR expression pattern in BM HSPCs after PT (+/-PNA) is dissimilar in old versus young adult mice. In the acute postinjury phase, old adult mice are unable to mount a robust miR HSPC response. Hematopoietic stem and progenitor cell miR expression in old PT mice reflects a diminished functional status and a blunted capacity for terminal differentiation of myeloid cells.
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Affiliation(s)
- Dijoia B. Darden
- Department of Surgery, University of Florida College of Medicine, Gainesville, Florida
| | - Juan C. Mira
- Department of Surgery, University of Florida College of Medicine, Gainesville, Florida
| | - Maria-Cecilia Lopez
- Department of Molecular Genetics and Microbiology, University of Florida, Gainesville, FL
| | - Julie A. Stortz
- Department of Surgery, University of Florida College of Medicine, Gainesville, Florida
| | - Brittany P. Fenner
- Department of Surgery, University of Florida College of Medicine, Gainesville, Florida
| | - Lauren S. Kelly
- Department of Surgery, University of Florida College of Medicine, Gainesville, Florida
| | - Dina C. Nacionales
- Department of Surgery, University of Florida College of Medicine, Gainesville, Florida
| | - Ashrita Budharaju
- Department of Surgery, University of Florida College of Medicine, Gainesville, Florida
| | - Tyler J. Loftus
- Department of Surgery, University of Florida College of Medicine, Gainesville, Florida
| | - Henry V. Baker
- Department of Molecular Genetics and Microbiology, University of Florida, Gainesville, FL
| | - Frederick A. Moore
- Department of Surgery, University of Florida College of Medicine, Gainesville, Florida
| | - Scott C. Brakenridge
- Department of Surgery, University of Florida College of Medicine, Gainesville, Florida
| | - Lyle L. Moldawer
- Department of Surgery, University of Florida College of Medicine, Gainesville, Florida
| | - Alicia M. Mohr
- Department of Surgery, University of Florida College of Medicine, Gainesville, Florida
| | - Philip A. Efron
- Department of Surgery, University of Florida College of Medicine, Gainesville, Florida
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Birling MC, Fray MD, Kasparek P, Kopkanova J, Massimi M, Matteoni R, Montoliu L, Nutter LMJ, Raspa M, Rozman J, Ryder EJ, Scavizzi F, Voikar V, Wells S, Pavlovic G, Teboul L. Importing genetically altered animals: ensuring quality. Mamm Genome 2021; 33:100-107. [PMID: 34536110 PMCID: PMC8913481 DOI: 10.1007/s00335-021-09908-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2021] [Accepted: 08/26/2021] [Indexed: 11/30/2022]
Abstract
The reproducibility of research using laboratory animals requires reliable management of their quality, in particular of their genetics, health and environment, all of which contribute to their phenotypes. The point at which these biological materials are transferred between researchers is particularly sensitive, as it may result in a loss of integrity of the animals and/or their documentation. Here, we describe the various aspects of laboratory animal quality that should be confirmed when sharing rodent research models. We also discuss how repositories of biological materials support the scientific community to ensure the continuity of the quality of laboratory animals. Both the concept of quality and the role of repositories themselves extend to all exchanges of biological materials and all networks that support the sharing of these reagents.
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Affiliation(s)
- M-C Birling
- PHENOMIN-Institut Clinique de la Souris, CELPHEDIA, CNRS, INSERM, Université de Strasbourg, Illkirch-Graffenstaden, 67404, Strasbourg, France.
| | - M D Fray
- The Mary Lyon Centre, Medical Research Council Harwell, Harwell Campus, Didcot, OX11 0RD, Oxon, UK
| | - P Kasparek
- Czech Centre for Phenogenomics, Institute of Molecular Genetics of the Czech Academy of Sciences, Vestec, Czech Republic
| | - J Kopkanova
- Czech Centre for Phenogenomics, Institute of Molecular Genetics of the Czech Academy of Sciences, Vestec, Czech Republic
| | - M Massimi
- Institute of Biochemistry and Cell Biology, Italian National Research Council (CNR), Monterotondo Scalo, Rome, Italy
| | - R Matteoni
- Institute of Biochemistry and Cell Biology, Italian National Research Council (CNR), Monterotondo Scalo, Rome, Italy
| | - L Montoliu
- Department of Molecular and Cellular Biology, National Centre for Biotechnology (CNB-CSIC) Madrid and CIBERER-ISCIII, Madrid, Spain
| | - L M J Nutter
- The Centre for Phenogenomics, The Hospital for Sick Children, Toronto, ON, Canada
| | - M Raspa
- Institute of Biochemistry and Cell Biology, Italian National Research Council (CNR), Monterotondo Scalo, Rome, Italy
| | - J Rozman
- Czech Centre for Phenogenomics, Institute of Molecular Genetics of the Czech Academy of Sciences, Vestec, Czech Republic
| | - E J Ryder
- Wellcome Sanger Institute, Wellcome Genome Campus, Hinxton, Cambridge, UK.,LGC, Sport and Specialised Analytical Services, Fordham, UK
| | - F Scavizzi
- Institute of Biochemistry and Cell Biology, Italian National Research Council (CNR), Monterotondo Scalo, Rome, Italy
| | - V Voikar
- Neuroscience Center and Laboratory Animal Center, Helsinki Institute of Life Science (HiLIFE), University of Helsinki, Helsinki, Finland
| | - S Wells
- The Mary Lyon Centre, Medical Research Council Harwell, Harwell Campus, Didcot, OX11 0RD, Oxon, UK
| | - G Pavlovic
- PHENOMIN-Institut Clinique de la Souris, CELPHEDIA, CNRS, INSERM, Université de Strasbourg, Illkirch-Graffenstaden, 67404, Strasbourg, France.
| | - L Teboul
- The Mary Lyon Centre, Medical Research Council Harwell, Harwell Campus, Didcot, OX11 0RD, Oxon, UK.
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Bull C, Devarakonda S, Ahlin R. Role of dietary fiber in safeguarding intestinal health after pelvic radiotherapy. Curr Opin Support Palliat Care 2021; 15:180-187. [PMID: 34232134 DOI: 10.1097/spc.0000000000000559] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
PURPOSE OF REVIEW Damage to healthy bowel tissue during pelvic radiotherapy can produce devastating and life-long changes in bowel function. The surging interest in microbiota and its importance for our wellbeing has generated a bulk of research highlighting how the food we consume impacts bowel health and disease. Dietary fiber is known to promote bowel health, yet there is a limited number of studies on dietary fiber in connection to pelvic radiotherapy. Here, we review some of the literature on the subject and present the most recent publications in the field. RECENT FINDINGS Advice given concerning dietary fiber intake during and after pelvic radiotherapy are inconsistent, with some clinics suggesting a decrease in intake and others an increase. Recent animal studies provide a solid support for a protective role of dietary fiber with regards to intestinal health after pelvic radiotherapy, mainly through its impact on the microbiota. No clinical study has yet provided unambiguous evidence for a similar function of dietary fiber in humans undergoing pelvic radiotherapy. SUMMARY There is a lack of evidence behind the dietary advice given to cancer survivors suffering from radiation-induced bowel dysfunction, and high-quality and well powered studies with long follow-up times are needed.
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Affiliation(s)
- Cecilia Bull
- The Division of Clinical Cancer Epidemiology, Department of Oncology at the Institute of Clinical Sciences, The Sahlgrenska Academy at the University of Gothenburg, Gothenburg, Sweden
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Pownall WR, Imhof D, Trigo NF, Ganal-Vonarburg SC, Plattet P, Monney C, Forterre F, Hemphill A, Oevermann A. Safety of a Novel Listeria monocytogenes-Based Vaccine Vector Expressing NcSAG1 ( Neospora caninum Surface Antigen 1). Front Cell Infect Microbiol 2021; 11:675219. [PMID: 34650932 PMCID: PMC8506043 DOI: 10.3389/fcimb.2021.675219] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2021] [Accepted: 07/21/2021] [Indexed: 02/01/2023] Open
Abstract
Listeria monocytogenes (LM) has been proposed as vaccine vector in various cancers and infectious diseases since LM induces a strong immune response. In this study, we developed a novel and safe LM-based vaccine vector platform, by engineering a triple attenuated mutant (Lm3Dx) (ΔactA, ΔinlA, ΔinlB) of the wild-type LM strain JF5203 (CC 1, phylogenetic lineage I). We demonstrated the strong attenuation of Lm3Dx while maintaining its capacity to selectively infect antigen-presenting cells (APCs) in vitro. Furthermore, as proof of concept, we introduced the immunodominant Neospora caninum (Nc) surface antigen NcSAG1 into Lm3Dx. The NcSAG1 protein was expressed by Lm3Dx_SAG1 during cellular infection. To demonstrate safety of Lm3Dx_SAG1 in vivo, we vaccinated BALB/C mice by intramuscular injection. Following vaccination, mice did not suffer any adverse effects and only sporadically shed bacteria at very low levels in the feces (<100 CFU/g). Additionally, bacterial load in internal organs was very low to absent at day 1.5 and 4 following the 1st vaccination and at 2 and 4 weeks after the second boost, independently of the physiological status of the mice. Additionally, vaccination of mice prior and during pregnancy did not interfere with pregnancy outcome. However, Lm3Dx_SAG1 was shed into the milk when inoculated during lactation, although it did not cause any clinical adverse effects in either dams or pups. Also, we have indications that the vector persists more days in the injected muscle of lactating mice. Therefore, impact of physiological status on vector dynamics in the host and mechanisms of milk shedding requires further investigation. In conclusion, we provide strong evidence that Lm3Dx is a safe vaccine vector in non-lactating animals. Additionally, we provide first indications that mice vaccinated with Lm3Dx_SAG1 develop a strong and Th1-biased immune response against the Lm3Dx-expressed neospora antigen. These results encourage to further investigate the efficiency of Lm3Dx_SAG1 to prevent and treat clinical neosporosis.
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Affiliation(s)
- William Robert Pownall
- Division of Small Animal Surgery, Department of Clinical Veterinary Sciences, Vetsuisse Faculty, University of Bern, Bern, Switzerland
| | - Dennis Imhof
- Institute of Parasitology, DIP, Vetsuisse Faculty, University of Bern, Bern, Switzerland
| | - Nerea Fernandez Trigo
- Department for BioMedical Research (DBMR), Universitätsklinik für Viszerale Chirurgie und Medizin, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
| | - Stephanie C. Ganal-Vonarburg
- Department for BioMedical Research (DBMR), Universitätsklinik für Viszerale Chirurgie und Medizin, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
| | - Philippe Plattet
- Division of Neurological Sciences, DCR-VPH, Vetsuisse Faculty, University of Bern, Bern, Switzerland
| | - Camille Monney
- Division of Neurological Sciences, DCR-VPH, Vetsuisse Faculty, University of Bern, Bern, Switzerland
| | - Franck Forterre
- Division of Small Animal Surgery, Department of Clinical Veterinary Sciences, Vetsuisse Faculty, University of Bern, Bern, Switzerland
| | - Andrew Hemphill
- Institute of Parasitology, DIP, Vetsuisse Faculty, University of Bern, Bern, Switzerland
| | - Anna Oevermann
- Division of Neurological Sciences, DCR-VPH, Vetsuisse Faculty, University of Bern, Bern, Switzerland
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A wake-up call: Sleep physiology and related translational discrepancies in studies of rapid-acting antidepressants. Prog Neurobiol 2021; 206:102140. [PMID: 34403718 PMCID: PMC9583188 DOI: 10.1016/j.pneurobio.2021.102140] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2021] [Revised: 08/04/2021] [Accepted: 08/09/2021] [Indexed: 11/21/2022]
Abstract
Depression is frequently associated with sleep problems, and clinical improvement often coincides with the normalization of sleep architecture and realignment of circadian rhythm. The effectiveness of treatments targeting sleep in depressed patients, such as sleep deprivation, further demonstrates the confluence of sleep and mood. Moreover, recent studies showing that the rapid-acting antidepressant ketamine influences processes related to sleep-wake neurobiology have led to novel hypotheses explaining rapid and sustained antidepressant effects. Despite the available evidence, studies addressing ketamine’s antidepressant effects have focused on pharmacology and often overlooked the role of physiology. To explore this discrepancy in research on rapid-acting antidepressants, we examined articles published between 2009–2019. A keyword search algorithm indicated that vast majority of the articles completely ignored sleep. Out of the 100 most frequently cited preclinical and clinical research papers, 89 % and 71 %, respectively, did not mention sleep at all. Furthermore, only a handful of these articles disclosed key experimental variables, such as the times of treatment administration or behavioral testing, let alone considered the potential association between these variables and experimental observations. Notably, in preclinical studies, treatments were preferentially administered during the inactive period, which is the polar opposite of clinical practice and research. We discuss the potential impact of this practice on the results in the field. Our hope is that this perspective will serve as a wake-up call to (re)-examine rapid-acting antidepressant effects with more appreciation for the role of sleep and chronobiology.
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Cage Environment Regulates Gut Microbiota Independent of Toll-Like Receptors. Infect Immun 2021; 89:e0018721. [PMID: 33941577 DOI: 10.1128/iai.00187-21] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
The gut microbiome orchestrates epithelial homeostasis and both local and remote immunological responses. Critical to these regulatory interactions are innate immune receptors termed Toll-like receptors (TLRs). Studies to date have implicated innate immunity and Toll-like receptors in shaping key features of the gut microbiome. However, a variety of biological and environmental variables are also implicated in determining gut microbiota composition. In this report, we hypothesized that cohousing and environment dominated the regulation of the gut microbiota in animal models independent of innate immunity. To determine the importance of these variables, innate immunity, or environment in shaping gut microbiota, we used a randomized cohousing strategy and transgenic TLR-deficient mice. We have found that mice cohoused together by genotype exhibited limited changes over time in the composition of the gut microbiota. However, for mice randomized to cage, we report extensive changes in the gut microbiota, independent of TLR function, whereby the fecal microbiota of TLR-deficient mice converges with that of wild-type mice. TLR5-deficient mice in these experiments exhibit greater susceptibility to comparative changes in the microbiota than other TLR-deficient mice and wild-type mice. Our work has broad implications for the study of innate immunity and host-microbiota interactions. Given the profound impact that gut dysbiosis may have on immunity, this report highlights the potential impact of cohousing on the gut microbiota and indices of inflammation as outcomes in biological models of infectious or inflammatory disease.
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Ericsson AC, Busi SB, Davis DJ, Nabli H, Eckhoff DC, Dorfmeyer RA, Turner G, Oswalt PS, Crim MJ, Bryda EC. Molecular and culture-based assessment of the microbiome in a zebrafish (Danio rerio) housing system during set-up and equilibration. Anim Microbiome 2021; 3:55. [PMID: 34353374 PMCID: PMC8340428 DOI: 10.1186/s42523-021-00116-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2021] [Accepted: 07/27/2021] [Indexed: 01/04/2023] Open
Abstract
BACKGROUND Zebrafish used in research settings are often housed in recirculating aquaculture systems (RAS) which rely on the system microbiome, typically enriched in a biofiltration substrate, to remove the harmful ammonia generated by fish via oxidation. Commercial RAS must be allowed to equilibrate following installation, before fish can be introduced. There is little information available regarding the bacterial community structure in commercial zebrafish housing systems, or the time-point at which the system or biofilter reaches a microbiological equilibrium in RAS in general. METHODS A zebrafish housing system was monitored at multiple different system sites including tank water in six different tanks, pre- and post-particulate filter water, the fluidized bed biofilter substrate, post-carbon filter water, and water leaving the ultra-violet (UV) disinfection unit and entering the tanks. All of these samples were collected in quadruplicate, from prior to population of the system with zebrafish through 18 weeks post-population, and analyzed using both 16S rRNA amplicon sequencing and culture using multiple agars and annotation of isolates via matrix-assisted laser desorption/ionization-time-of-flight (MALDI-TOF) mass spectrometry. Sequencing data were analyzed using traditional methods, network analyses of longitudinal data, and integration of culture and sequence data. RESULTS The water microbiome, dominated by Cutibacterium and Staphylococcus spp., reached a relatively stable richness and composition by approximately three to four weeks post-population, but continued to evolve in composition throughout the study duration. The microbiomes of the fluidized bed biofilter and water leaving the UV disinfection unit were distinct from water at all other sites. Core taxa detected using molecular methods comprised 36 amplicon sequence variants, 15 of which represented Proteobacteria including multiple members of the families Burkholderiaceae and Sphingomonadaceae. Culture-based screening yielded 36 distinct isolates, and showed moderate agreement with sequencing data. CONCLUSIONS The microbiome of commercial RAS used for research zebrafish reaches a relatively stable state by four weeks post-population and would be expected to be suitable for experimental use following that time-point.
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Affiliation(s)
- Aaron C. Ericsson
- Department of Veterinary Pathobiology, College of Veterinary Medicine, University of Missouri, Columbia, MO USA
- University of Missouri Metagenomics Center, Columbia, MO USA
| | - Susheel B. Busi
- Systems Ecology Group, Luxembourg Centre for Systems Biomedicine, University of Luxembourg, Esch-sur-Alzette, Luxembourg
| | - Daniel J. Davis
- Department of Veterinary Pathobiology, College of Veterinary Medicine, University of Missouri, Columbia, MO USA
- Animal Modeling Core, University of Missouri, Columbia, MO USA
| | - Henda Nabli
- Department of Veterinary Pathobiology, College of Veterinary Medicine, University of Missouri, Columbia, MO USA
| | | | - Rebecca A. Dorfmeyer
- Department of Veterinary Pathobiology, College of Veterinary Medicine, University of Missouri, Columbia, MO USA
- University of Missouri Metagenomics Center, Columbia, MO USA
| | - Giedre Turner
- Department of Veterinary Pathobiology, College of Veterinary Medicine, University of Missouri, Columbia, MO USA
- University of Missouri Metagenomics Center, Columbia, MO USA
| | - Payton S. Oswalt
- Department of Veterinary Pathobiology, College of Veterinary Medicine, University of Missouri, Columbia, MO USA
| | | | - Elizabeth C. Bryda
- Department of Veterinary Pathobiology, College of Veterinary Medicine, University of Missouri, Columbia, MO USA
- Animal Modeling Core, University of Missouri, Columbia, MO USA
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Arnesen H, Müller MHB, Aleksandersen M, Østby GC, Carlsen H, Paulsen JE, Boysen P. Induction of colorectal carcinogenesis in the C57BL/6J and A/J mouse strains with a reduced DSS dose in the AOM/DSS model. Lab Anim Res 2021; 37:19. [PMID: 34315530 PMCID: PMC8317392 DOI: 10.1186/s42826-021-00096-y] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2021] [Accepted: 07/01/2021] [Indexed: 12/21/2022] Open
Abstract
Background Colorectal cancer (CRC) is one of the most frequently diagnosed cancers worldwide and thus mouse models of CRC are of significant value to study the pathogenesis. The Azoxymethane/Dextran sulfate sodium (AOM/DSS) model is a widely used, robust initiation-promotion model for chemical induction of colitis-associated CRC in rodents. However, the dosage of chemicals, treatment regimens and outcome measures vary greatly among studies employing this model. Thus, the aim of this study was to examine an AOM/DSS model involving a reduced (1%) dose of DSS for induction of carcinogenesis in A/J and C57BL/6J (B6) mice. Results We show that colonic preneoplastic lesions can be reliably detected in A/J and B6 mice by use of a AOM/DSS model involving a single injection of 10 mg/kg AOM followed by three 7-day cycles of a low-dose (1%) DSS administration. Supporting existing evidence of A/J mice exhibiting higher susceptibility to AOM than B6 mice, our AOM/DSS-treated A/J mice developed the highest number of large colonic lesions. Clinical symptoms in both strains subjected to the AOM/DSS treatment did not persist in-between treatment cycles, demonstrating that the animals tolerated the treatment well. Conclusions Our findings suggest that a reduced dose of DSS in the AOM/DSS model can be considered in future studies of early phase colorectal carcinogenesis in the A/J and B6 mouse strains using preneoplastic lesions as an outcome measure, and that such regimen may reduce the risk of early trial terminations to accommodate human endpoints. Overall, our data emphasize the importance of devoting attention towards choice of protocol, outcome measures and mouse strain in studies of CRC in mice according to the study purpose. Supplementary Information The online version contains supplementary material available at 10.1186/s42826-021-00096-y.
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Affiliation(s)
- Henriette Arnesen
- Department of Preclinical Sciences and Pathology, Faculty of Veterinary Medicine, Norwegian University of Life Sciences (NMBU), Oslo, Norway. .,Faculty of Chemistry, Biotechnology and Food Science, Norwegian University of Life Sciences (NMBU), Ås, Norway.
| | - Mette Helen Bjørge Müller
- Department of Paraclinical Sciences, Faculty of Veterinary Medicine, Norwegian University of Life Sciences (NMBU), Oslo, Norway
| | - Mona Aleksandersen
- Department of Preclinical Sciences and Pathology, Faculty of Veterinary Medicine, Norwegian University of Life Sciences (NMBU), Oslo, Norway
| | - Gunn Charlotte Østby
- Department of Production Animal Clinical Sciences, Faculty of Veterinary Medicine, Norwegian University of Life Sciences (NMBU), Oslo, Norway
| | - Harald Carlsen
- Faculty of Chemistry, Biotechnology and Food Science, Norwegian University of Life Sciences (NMBU), Ås, Norway
| | - Jan Erik Paulsen
- Department of Paraclinical Sciences, Faculty of Veterinary Medicine, Norwegian University of Life Sciences (NMBU), Oslo, Norway
| | - Preben Boysen
- Department of Preclinical Sciences and Pathology, Faculty of Veterinary Medicine, Norwegian University of Life Sciences (NMBU), Oslo, Norway
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Specific Pathogen-Free Animals for Civilian and Military Trauma: a Cautionary Note in the Translation of New Drug Therapies. Shock 2021; 54:232-236. [PMID: 32665536 DOI: 10.1097/shk.0000000000001495] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Specific-pathogen free (SPF) animals were introduced into biomedical research in the early 1960s to reduce the incidence of disease into experimental design. The goal was to provide animals with selected microbiota compatible with sustained health. Sixty years later, SPF status has become a variable itself in biomedical research. Alterations in the gut microbiome-host relationship can profoundly influence basic physiology, immune/inflammatory function, susceptibility to infection and disease, and behavior. In addition, it can influence the translational success of a drug or technology from animal models to humans. We discuss this aspect of SPF status in animal models used for military or civilian trauma and shock research. Currently, there is a broad spectrum of SPF exclusion and inclusion criteria which vary from one supplier or animal husbandry facility. If translation to humans is the end-game of trauma research, we recommend replicating a gut microbiome similar to the wild-type for optimal success. We further suggest that at the end of each publication a URL access be provided on Animal Microbial/Pathogen Exclusion Status that a study was based upon. This may help address the differences in results within a single laboratory or between laboratories around the world and improve translation success.
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Gerb SA, Dashek RJ, Ericsson AC, Griffin R, Franklin CL. The Effects of Ketamine on the Gut Microbiome on CD1 Mice. Comp Med 2021; 71:295-301. [PMID: 34301347 DOI: 10.30802/aalas-cm-20-000117] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
The intestinal microbiota of an organism can significantly alter outcome data in otherwise identical experiments. Occasionally, animals may require sedation or anesthesia for scientific or health-related purposes, and certain anesthetics, such as ketamine, can profoundly affect the gastrointestinal system. While many factors can alter the gut microbiome (GM), the effects of anesthetics on the composition or diversity of the GM have not been established. The goal of the current study was to determine whether daily administration of ketamine would significantly alter the microbiome of CD1 mice. To achieve this goal, female CD1 mice received daily injections of ketamine HCl (100 mg/kg) or the equivalent volume of 0.9% saline for 10 consecutive days. Fecal samples were collected before the first administration and 24 h after the final dose of either ketamine or saline. Samples were analyzed by 16S rRNA sequencing to identify changes between groups in diversity or composition of GM. The study found no significant changes to the GM after serial ketamine administration when treated mice were housed with controls. Therefore, ketamine administration is unlikely to alter the GM of a CD1 mouse and should not serve be a confounding factor in reproducibility of research.
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Affiliation(s)
- Samantha A Gerb
- Department of Veterinary Pathobiology, University of Missouri, Columbia, Missouri
| | - Ryan J Dashek
- Department of Veterinary Pathobiology, University of Missouri, Columbia, Missouri
| | - Aaron C Ericsson
- Department of Veterinary Pathobiology, University of Missouri, Columbia, Missouri; MU Metagenomics Center, University of Missouri, Columbia, Missouri; MU Mutant Mouse Resource and Research Center, University of Missouri, Columbia, Missouri
| | - Rachel Griffin
- Michigan State College of Veterinary Medicine, East Lancing, Michigan
| | - Craig L Franklin
- Department of Veterinary Pathobiology, University of Missouri, Columbia, Missouri; MU Metagenomics Center, University of Missouri, Columbia, Missouri; MU Mutant Mouse Resource and Research Center, University of Missouri, Columbia, Missouri;,
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Puntillo M, Spotti J, Salminen S, Vinderola G. Narrowing down the number of potential plant-based probiotic candidates by successive in vitro, technological and in vivo assays. Benef Microbes 2021; 12:45-58. [PMID: 34259617 DOI: 10.3920/bm2020.0228] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The interest on plant-based fermented food is in raise in Western countries. The aim of this study was to select interleukin (IL)-10 inducing strains for the development of potential probiotic plant-based fermented foods. Departing from a collection of 52 lactic acid bacteria (LAB) strains derived from plant material, in vitro co-culture with murine macrophages allowed us to narrow down the number of candidates to 21 strains able to induce IL-10 secretion. 14 of these strains were able to promote the production of tumour necrosis factor-α too. The capacity to induce IL-6 was used to further reduce the number of strains to 4, from which Lactiplantibacillus plantarum subsp. plantarum LpAv was selected to ferment oat and carrots. L. plantarum LpAv was able to ferment oat and carrots until reaching counts of ca. 108 and 109 cfu/ml. Fermented oat and carrots were orally administered to mice for 10 consecutive days and challenged with a single infective dose of Salmonella enterica serovar. Typhimurium. Counts of L. plantarum LpAv in fermented carrots were 9.23±0.05 cfu/ml and 9.27±0.01 cfu/ml, at day 1 and 10 of the feeding period. Fermented carrots were able to confer enhanced protection (80% of survival) against infection, when compared to control mice (less than 25% of survival). However, L. plantarum LpAv administered as pure culture was not able to confer protection against Salmonella infection. L. plantarum LpAv was selected among 52 plant-derived LAB and it was able to ferment oat and carrots, being only fermented carrots able to confer enhanced protection against Salmonella infection. A succession of in vitro to in vivo tests is proposed as a tool to narrow down the number of candidates when searching for potential novel probiotics from a collection of autochthonous strains.
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Affiliation(s)
- M Puntillo
- Instituto de Lactología Industrial (CONICET-UNL), Facultad de Ingeniería Química, Universidad Nacional del Litoral, Santiago del Estero 2829, Santa Fe, 3000, Argentina
| | - J Spotti
- Instituto de Tecnología de Alimentos, Facultad de Ingeniería Química, Universidad Nacional del Litoral, 1 de Mayo 3250, Santa Fe, 3000, Argentina
| | - S Salminen
- Functional Foods Forum, Faculty of Medicine, University of Turku, Itäinenpitkäkatu 4 A, Turku, 20014, Finland
| | - G Vinderola
- Instituto de Lactología Industrial (CONICET-UNL), Facultad de Ingeniería Química, Universidad Nacional del Litoral, Santiago del Estero 2829, Santa Fe, 3000, Argentina
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