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Yamazaki K. Oral-gut axis as a novel biological mechanism linking periodontal disease and systemic diseases: A review. JAPANESE DENTAL SCIENCE REVIEW 2023; 59:273-280. [PMID: 37674899 PMCID: PMC10477752 DOI: 10.1016/j.jdsr.2023.08.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2023] [Revised: 07/20/2023] [Accepted: 08/17/2023] [Indexed: 09/08/2023] Open
Abstract
Substantial evidence suggests that periodontal disease increases the risk of developing and progressing extraoral manifestations such as diabetes, atherosclerosis, rheumatoid arthritis, and inflammatory bowel disease. The most probable causative mechanism behind this is the influx of bacteria and/or bacterial products (endotoxin) and inflammatory cytokines into the systemic circulation originating from inflamed periodontal tissues. However, recent studies have revealed that oral bacteria, especially periodontopathic bacteria, play a role in inducing dysbiosis of the gut microbiota resulting induction of gut dysbiosis-related pathology associated with systemic diseases. Conversely, the disruption of gut microbiota has been shown to have a negative impact on the pathogenesis of periodontal disease. Based on our study findings and the available literature, this review presents an overview of the relationship between periodontal disease and systemic health, highlighting the mouth-gut connection.
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Affiliation(s)
- Kazuhisa Yamazaki
- Laboratory for Intestinal Ecosystem, RIKEN Center for Integrative Medical Sciences, 1-7-22 Suehiro-Cho, Tsurumi-Ku, Yokohama, Kanagawa 230-0045, Japan
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2
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Poser M, Sing KEA, Ebert T, Ziebolz D, Schmalz G. The rosetta stone of successful ageing: does oral health have a role? Biogerontology 2023; 24:867-888. [PMID: 37421489 PMCID: PMC10615965 DOI: 10.1007/s10522-023-10047-w] [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: 01/17/2023] [Accepted: 06/19/2023] [Indexed: 07/10/2023]
Abstract
Ageing is an inevitable aspect of life and thus successful ageing is an important focus of recent scientific efforts. The biological process of ageing is mediated through the interaction of genes with environmental factors, increasing the body's susceptibility to insults. Elucidating this process will increase our ability to prevent and treat age-related disease and consequently extend life expectancy. Notably, centenarians offer a unique perspective on the phenomenon of ageing. Current research highlights several age-associated alterations on the genetic, epigenetic and proteomic level. Consequently, nutrient sensing and mitochondrial function are altered, resulting in inflammation and exhaustion of regenerative ability.Oral health, an important contributor to overall health, remains underexplored in the context of extreme longevity. Good masticatory function ensures sufficient nutrient uptake, reducing morbidity and mortality in old age. The relationship between periodontal disease and systemic inflammatory pathologies is well established. Diabetes, rheumatoid arthritis and cardiovascular disease are among the most significant disease burdens influenced by inflammatory oral health conditions. Evidence suggests that the interaction is bi-directional, impacting progression, severity and mortality. Current models of ageing and longevity neglect an important factor in overall health and well-being, a gap that this review intends to illustrate and inspire avenues for future research.
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Affiliation(s)
- Maximilian Poser
- Department of Cariology, Endodontology and Periodontology, University Leipzig, Liebigstr. 12, 04103, Leipzig, Germany.
| | - Katie E A Sing
- Department of Medicine, Royal Devon and Exeter Hospital, University of Exeter Medical School, Exeter, EX2 5DW, UK
| | - Thomas Ebert
- Medical Department III - Endocrinology, Nephrology, Rheumatology, University of Leipzig, Liebigstr. 20, 04103, Leipzig, Germany
| | - Dirk Ziebolz
- Department of Cariology, Endodontology and Periodontology, University Leipzig, Liebigstr. 12, 04103, Leipzig, Germany
| | - Gerhard Schmalz
- Department of Cariology, Endodontology and Periodontology, University Leipzig, Liebigstr. 12, 04103, Leipzig, Germany
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Chihara K, Okada K, Uchida F, Miura I, Komine S, Warabi E, Takayama T, Suzuki H, Matsuzaka T, Ishibashi-Kanno N, Yamagata K, Yanagawa T, Bukawa H, Shoda J. Macrophage specific restoration of the Nrf2 gene in whole-body knockout mice ameliorates steatohepatitis induced by lipopolysaccharide from Porphyromonas gingivalis through enhanced hepatic clearance. PLoS One 2023; 18:e0291880. [PMID: 37862331 PMCID: PMC10588835 DOI: 10.1371/journal.pone.0291880] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2023] [Accepted: 09/06/2023] [Indexed: 10/22/2023] Open
Abstract
Lipopolysaccharide (LPS) derived from Porphyromonas gingivalis (P.g.), which causes periodontal disease, contributes to the development of non-alcoholic steatohepatitis (NASH). We investigated the role of Nrf2, an antioxidative stress sensor, in macrophages in the development of NASH induced by LPS from P.g. We generated macrophage-specific Nrf2 gene rescue mice (Nrf2-mRes), which express Nrf2 only in macrophages, using the cre/loxp system. Wild-type (WT) mice, whole body Nrf2-knockout (Nrf2-KO) mice, and Nrf2-mRes mice were fed a high-fat diet for 18 weeks, and LPS from P.g. was administered intraperitoneally for the last 6 weeks. Nrf2-KO mice developed severe steatohepatitis with liver inflammation and fibrosis compared with WT mice, and steatohepatitis was ameliorated in Nrf2-mRes mice. The mRNA expressions of Toll-like receptor (Tlr)-2, which activates inflammatory signaling pathways after LPS binding, and α-smooth muscle actin (αSma), which promotes hepatic fibrosis, were reduced in Nrf2-mRes mice compared with Nrf2-KO mice. The protein levels of LPS-binding protein in livers were increased in Nrf2-KO mice compared with WT mice; however, the levels were reduced in Nrf2-mRes mice despite similar numbers of F4/80 positive cells, which reflect macrophage/Kupffer cell infiltration into the livers. Nrf2 in macrophages ameliorates NASH through the increased hepatic clearance of LPS.
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Affiliation(s)
- Kanako Chihara
- Department of Oral and Maxillofacial Surgery, Institute of Medicine, University of Tsukuba, Tsukuba-shi, Ibaraki, Japan
- Doctoral Program in Medical Sciences, Graduate School of Comprehensive Human Sciences, University of Tsukuba, Tsukuba-shi, Ibaraki, Japan
| | - Kosuke Okada
- Division of Medical Sciences, Institute of Medicine, University of Tsukuba, Tsukuba-shi, Ibaraki, Japan
- Department of Gastroenterology, Institute of Medicine, University of Tsukuba, Tsukuba-shi, Ibaraki, Japan
| | - Fumihiko Uchida
- Department of Oral and Maxillofacial Surgery, Institute of Medicine, University of Tsukuba, Tsukuba-shi, Ibaraki, Japan
| | - Ikuru Miura
- Faculty of Sports and Health Science, Fukuoka University, Fukuoka-shi, Fukuoka, Japan
| | - Shoichi Komine
- Department of Acupuncture and Moxibustion, Faculty of Human Care, Teikyo Heisei University, Toshima-ku, Tokyo, Japan
| | - Eiji Warabi
- Division of Biomedical Sciences, Institute of Medicine, University of Tsukuba, Tsukuba-shi, Ibaraki, Japan
| | - Takako Takayama
- Department of Gastroenterology, Institute of Medicine, University of Tsukuba, Tsukuba-shi, Ibaraki, Japan
| | - Hideo Suzuki
- Department of Gastroenterology, Institute of Medicine, University of Tsukuba, Tsukuba-shi, Ibaraki, Japan
| | - Takashi Matsuzaka
- Transborder Medical Research Center, University of Tsukuba, Tsukuba-shi, Ibaraki, Japan
| | - Naomi Ishibashi-Kanno
- Department of Oral and Maxillofacial Surgery, Institute of Medicine, University of Tsukuba, Tsukuba-shi, Ibaraki, Japan
| | - Kenji Yamagata
- Department of Oral and Maxillofacial Surgery, Institute of Medicine, University of Tsukuba, Tsukuba-shi, Ibaraki, Japan
| | - Toru Yanagawa
- Department of Oral and Maxillofacial Surgery, Institute of Medicine, University of Tsukuba, Tsukuba-shi, Ibaraki, Japan
| | - Hiroki Bukawa
- Department of Oral and Maxillofacial Surgery, Institute of Medicine, University of Tsukuba, Tsukuba-shi, Ibaraki, Japan
| | - Junichi Shoda
- Division of Medical Sciences, Institute of Medicine, University of Tsukuba, Tsukuba-shi, Ibaraki, Japan
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4
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Tan X, Wang Y, Gong T. The interplay between oral microbiota, gut microbiota and systematic diseases. J Oral Microbiol 2023; 15:2213112. [PMID: 37200866 PMCID: PMC10187086 DOI: 10.1080/20002297.2023.2213112] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2022] [Revised: 05/02/2023] [Accepted: 05/08/2023] [Indexed: 05/20/2023] Open
Abstract
Over the past two decades, the importance of microbiota in health and disease has become evident. The human gut microbiota and oral microbiota are the largest and second-largest microbiome in the human body, respectively, and they are physically connected as the oral cavity is the beginning of the digestive system. Emerging and exciting evidence has shown complex and important connections between gut microbiota and oral microbiota. The interplay of the two microbiomes may contribute to the pathological processes of many diseases, including diabetes, rheumatoid arthritis, nonalcoholic fatty liver disease, inflammatory bowel disease, pancreatic cancer, colorectal cancer, and so on. In this review, we discuss possible routes and factors of oral microbiota to affect gut microbiota, and the contribution of this interplay between oral and gut microbiota to systemic diseases. Although most studies are association studies, recently, there have been increasing mechanistic investigations. This review aims to enhance the interest in the connection between oral and gut microbiota, and shows the tangible impact of this connection on human health.
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Affiliation(s)
- Xiujun Tan
- Stomatological Hospital of Chongqing Medical University, Chongqing, China
- Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences, Chongqing, China
- Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Chongqing, China
| | - Yizhong Wang
- Department of Research & Development, Zhejiang Charioteer Pharmaceutical CO. LTD, Taizhou, China
| | - Ting Gong
- Stomatological Hospital of Chongqing Medical University, Chongqing, China
- Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences, Chongqing, China
- Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Chongqing, China
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Kuraji R, Shiba T, Dong TS, Numabe Y, Kapila YL. Periodontal treatment and microbiome-targeted therapy in management of periodontitis-related nonalcoholic fatty liver disease with oral and gut dysbiosis. World J Gastroenterol 2023; 29:967-996. [PMID: 36844143 PMCID: PMC9950865 DOI: 10.3748/wjg.v29.i6.967] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/16/2022] [Revised: 11/14/2022] [Accepted: 01/30/2023] [Indexed: 02/10/2023] Open
Abstract
A growing body of evidence from multiple areas proposes that periodontal disease, accompanied by oral inflammation and pathological changes in the microbiome, induces gut dysbiosis and is involved in the pathogenesis of nonalcoholic fatty liver disease (NAFLD). A subgroup of NAFLD patients have a severely progressive form, namely nonalcoholic steatohepatitis (NASH), which is characterized by histological findings that include inflammatory cell infiltration and fibrosis. NASH has a high risk of further progression to cirrhosis and hepatocellular carcinoma. The oral microbiota may serve as an endogenous reservoir for gut microbiota, and transport of oral bacteria through the gastro-intestinal tract can set up a gut microbiome dysbiosis. Gut dysbiosis increases the production of potential hepatotoxins, including lipopolysaccharide, ethanol, and other volatile organic compounds such as acetone, phenol and cyclopentane. Moreover, gut dysbiosis increases intestinal permeability by disrupting tight junctions in the intestinal wall, leading to enhanced translocation of these hepatotoxins and enteric bacteria into the liver through the portal circulation. In particular, many animal studies support that oral administration of Porphyromonas gingivalis, a typical periodontopathic bacterium, induces disturbances in glycolipid metabolism and inflammation in the liver with gut dysbiosis. NAFLD, also known as the hepatic phenotype of metabolic syndrome, is strongly associated with metabolic complications, such as obesity and diabetes. Periodontal disease also has a bidirectional relationship with metabolic syndrome, and both diseases may induce oral and gut microbiome dysbiosis with insulin resistance and systemic chronic inflammation cooperatively. In this review, we will describe the link between periodontal disease and NAFLD with a focus on basic, epidemiological, and clinical studies, and discuss potential mechanisms linking the two diseases and possible therapeutic approaches focused on the microbiome. In conclusion, it is presumed that the pathogenesis of NAFLD involves a complex crosstalk between periodontal disease, gut microbiota, and metabolic syndrome. Thus, the conventional periodontal treatment and novel microbiome-targeted therapies that include probiotics, prebiotics and bacteriocins would hold great promise for preventing the onset and progression of NAFLD and subsequent complications in patients with periodontal disease.
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Affiliation(s)
- Ryutaro Kuraji
- Department of Periodontology, The Nippon Dental University School of Life Dentistry at Tokyo, Tokyo 102-0071, Japan
- Department of Orofacial Sciences, University of California San Francisco, San Francisco, CA 94143, United States
| | - Takahiko Shiba
- Department of Oral Medicine, Infection, and Immunity, Harvard School of Dental Medicine, Boston, MA 02115, United States
- Department of Periodontology, Tokyo Medical and Dental University, Tokyo 113-8549, Japan
| | - Tien S Dong
- The Vatche and Tamar Manoukian Division of Digestive Diseases, University of California Los Angeles, Department of Medicine, University of California David Geffen School of Medicine, Los Angeles, CA 90095, United States
| | - Yukihiro Numabe
- Department of Periodontology, The Nippon Dental University School of Life Dentistry at Tokyo, Tokyo 102-8159, Japan
| | - Yvonne L Kapila
- Department of Orofacial Sciences, University of California San Francisco, San Francisco, CA 94143, United States
- Sections of Biosystems and Function and Periodontics, Professor and Associate Dean of Research, Felix and Mildred Yip Endowed Chair in Dentistry, University of California Los Angeles, Los Angeles, CA 90095, United States
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Lu Y, Li Z, Peng X. Regulatory effects of oral microbe on intestinal microbiota and the illness. Front Cell Infect Microbiol 2023; 13:1093967. [PMID: 36816583 PMCID: PMC9928999 DOI: 10.3389/fcimb.2023.1093967] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2022] [Accepted: 01/16/2023] [Indexed: 02/04/2023] Open
Abstract
Over the past decade, the association between oral health, intestinal microbiota, and systemic diseases has been further validated. Some oral microbial species have been isolated from pathological intestine mucosa or feces and identified as biomarkers for intestinal diseases. A small proportion of oral microbiome passes through or colonizes the lower gastrointestinal tract, even in healthy individuals. Opportunistic pathogens from the oral cavity may expand and participate in the occurrence and progression of intestinal diseases when the anatomical barrier is disrupted. These disruptors interact with the intestinal microbiota, disturbing indigenous microorganisms, and mucosal barriers through direct colonization, blood circulation, or derived metabolite pathways. While interacting with the host's immune system, oral-derived pathogens stimulate inflammation responses and guide the transition of the intestinal microenvironment from a healthy state to a pre-disease state. Therefore, the oral-gut microbiome axis sheds light on new clinical therapy options, and gastrointestinal tract ecology balance necessitates simultaneous consideration of both oral and gut microbiomes. This review summarizes possible routes of oral microbes entering the intestine and the effects of certain oral bacteria on intestinal microbiota and the host's immune responses.
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章 可, 孙 妍, 潘 乙. [Developments in Research on the Relationship Between Porphyromonas gingivalis and Non-Oral Diseases]. SICHUAN DA XUE XUE BAO. YI XUE BAN = JOURNAL OF SICHUAN UNIVERSITY. MEDICAL SCIENCE EDITION 2023; 54:20-26. [PMID: 36647638 PMCID: PMC10409047 DOI: 10.12182/20230160509] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 09/27/2022] [Indexed: 01/18/2023]
Abstract
Porphyromonas gingivalis ( P. gingivalis) is a common periodontal pathogen. Recently, there has been increasing evidence suggesting that P. gingivalis is not only a common pathogen in the oral cavity, but is also closely associated with non-oral diseases, including inflammatory bowel disease, cancer, cardiovascular diseases, Alzheimer's disease, rheumatoid arthritis, diabetes mellitus, premature birth and non-alcoholic hepatitis, etc. Herein, we reviewed the developments in recent years in research on the relationship between P. gingivalis, a periodontal pathogen, and non-oral diseases, which will help determine whether P. gingivalis could be used as an auxiliary diagnostic biomarker or a potential therapeutic target for these non-oral diseases, thus contributing to the development of treatment strategies for the relevant diseases.
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Affiliation(s)
- 可可 章
- 温州医科大学口腔医学院·附属口腔医院 (温州 325000)School and Hospital of Stomatology, Wenzhou Medical University, Wenzhou 325000, China
| | - 妍 孙
- 温州医科大学口腔医学院·附属口腔医院 (温州 325000)School and Hospital of Stomatology, Wenzhou Medical University, Wenzhou 325000, China
| | - 乙怀 潘
- 温州医科大学口腔医学院·附属口腔医院 (温州 325000)School and Hospital of Stomatology, Wenzhou Medical University, Wenzhou 325000, China
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8
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Yamazaki K, Miyauchi E, Kato T, Sato K, Suda W, Tsuzuno T, Yamada-Hara M, Sasaki N, Ohno H, Yamazaki K. Dysbiotic human oral microbiota alters systemic metabolism via modulation of gut microbiota in germ-free mice. J Oral Microbiol 2022; 14:2110194. [PMID: 35966937 PMCID: PMC9373767 DOI: 10.1080/20002297.2022.2110194] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/02/2022] Open
Abstract
Background The effect of oral microbiota on the intestinal microbiota has garnered growing attention as a mechanism linking periodontal diseases to systemic diseases. However, the salivary microbiota is diverse and comprises numerous bacteria with a largely similar composition in healthy individuals and periodontitis patients. Aim We explored how health-associated and periodontitis-associated salivary microbiota differently colonized the intestine and their subsequent systemic effects. Methods The salivary microbiota was collected from a healthy individual and a periodontitis patient and gavaged into C57BL/6NJcl[GF] mice. Gut microbial communities, hepatic gene expression profiles, and serum metabolites were analyzed. Results The gut microbial composition was significantly different between periodontitis-associated microbiota-administered (PAO) and health-associated oral microbiota-administered (HAO) mice. The hepatic gene expression profile demonstrated a distinct pattern between the two groups, with higher expression of lipid and glucose metabolism-related genes. Disease-associated metabolites such as 2-hydroxyisobutyric acid and hydroxybenzoic acid were elevated in PAO mice. These metabolites were significantly correlated with characteristic gut microbial taxa in PAO mice. Conversely, health-associated oral microbiota were associated with higher levels of beneficial serum metabolites in HAO mice. Conclusion The multi-omics approach used in this study revealed that periodontitis-associated oral microbiota is associated with the induction of disease phenotype when they colonized the gut of germ-free mice.
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Affiliation(s)
- Kyoko Yamazaki
- Division of Periodontology, Niigata University Graduate School of Medical and Dental Sciences, Niigata Japan
| | - Eiji Miyauchi
- Laboratory for Intestinal Ecosystem, RIKEN Centre for Integrative Medical Sciences (IMS), Kanagawa Japan
- Laboratory of Mucosal Ecosystem Design, Institute for Molecular and Cellular Regulation, Gunma University, Maebashi, Gunma Japan
| | - Tamotsu Kato
- Laboratory for Intestinal Ecosystem, RIKEN Centre for Integrative Medical Sciences (IMS), Kanagawa Japan
- Immunobiology Laboratory, Graduate School of Medical Life Science, Yokohama City University, Kanagawa Japan
| | - Keisuke Sato
- Division of Periodontology, Niigata University Graduate School of Medical and Dental Sciences, Niigata Japan
| | - Wataru Suda
- Laboratory for Microbiome Sciences, RIKEN Center for Integrative Medical Sciences, Yokohama, Japan
| | - Takahiro Tsuzuno
- Division of Periodontology, Niigata University Graduate School of Medical and Dental Sciences, Niigata Japan
| | - Miki Yamada-Hara
- Division of Periodontology, Niigata University Graduate School of Medical and Dental Sciences, Niigata Japan
| | - Nobuo Sasaki
- Laboratory of Mucosal Ecosystem Design, Institute for Molecular and Cellular Regulation, Gunma University, Maebashi, Gunma Japan
| | - Hiroshi Ohno
- Laboratory for Intestinal Ecosystem, RIKEN Centre for Integrative Medical Sciences (IMS), Kanagawa Japan
- Immunobiology Laboratory, Graduate School of Medical Life Science, Yokohama City University, Kanagawa Japan
- Laboratory for Microbiome Sciences, RIKEN Center for Integrative Medical Sciences, Yokohama, Japan
| | - Kazuhisa Yamazaki
- Laboratory for Intestinal Ecosystem, RIKEN Centre for Integrative Medical Sciences (IMS), Kanagawa Japan
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Ancient oral microbiomes support gradual Neolithic dietary shifts towards agriculture. Nat Commun 2022; 13:6927. [PMID: 36414613 PMCID: PMC9681849 DOI: 10.1038/s41467-022-34416-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2022] [Accepted: 10/25/2022] [Indexed: 11/24/2022] Open
Abstract
The human microbiome has recently become a valuable source of information about host life and health. To date little is known about how it may have evolved during key phases along our history, such as the Neolithic transition towards agriculture. Here, we shed light on the evolution experienced by the oral microbiome during this transition, comparing Palaeolithic hunter-gatherers with Neolithic and Copper Age farmers that populated a same restricted area in Italy. We integrate the analysis of 76 dental calculus oral microbiomes with the dietary information derived from the identification of embedded plant remains. We detect a stronger deviation from the hunter-gatherer microbiome composition in the last part of the Neolithic, while to a lesser extent in the early phases of the transition. Our findings demonstrate that the introduction of agriculture affected host microbiome, supporting the hypothesis of a gradual transition within the investigated populations.
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Giri S, Uehara O, Takada A, Paudel D, Morikawa T, Arakawa T, Nagasawa T, Abiko Y, Furuichi Y. The effect of Porphyromonas gingivalis on the gut microbiome of mice in relation to aging. J Periodontal Res 2022; 57:1256-1266. [PMID: 36251393 DOI: 10.1111/jre.13062] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2022] [Revised: 09/05/2022] [Accepted: 09/27/2022] [Indexed: 11/27/2022]
Abstract
BACKGROUND AND OBJECTIVE The translocation of oral bacteria, including Porphyromonas gingivalis, to the gut has been shown to alter gut microbiome. However, the effect of P. gingivalis on gut microbiome in relation to aging has not been demonstrated. We hypothesize that P. gingivalis has more detrimental effect on gut environment with increased age. The objective of this study is to investigate the effect of P. gingivalis on gut environment using aged mice. MATERIALS AND METHODS C57BL/6J mice aged 4 weeks (young) or 76 weeks (old) were divided into four groups: control-young, control-old, P. gingivalis-administered young, and P. gingivalis-administered old. P. gingivalis was orally administered thrice weekly for 5 weeks. At 30 days after the last P. gingivalis administration, 16S rRNA sequencing was performed to study the gut microbiome. The mRNA and protein expression of intestinal junctional barrier molecules and the levels of the inflammatory cytokines IL-1β and TNF-α in the serum were evaluated. RESULTS Significant differences in the gut microbiomes between the groups, in terms of taxonomic abundance, bacterial diversity, and predicted metagenome function, were observed. A significant reduction in the alpha diversity and in the abundance of beneficial bacteria, such as Akkermansia and Clostridiaceae, in the P. gingivalis-administered old mice was observed. The mRNA and protein levels of Claudin-1 and Claudin-2 in the intestine were significantly elevated, while E-cadherin was significantly downregulated in the P. gingivalis-administered old mice, as were the serum levels of IL-1β and TNF-α. CONCLUSION The effect of P. gingivalis on the gut environment is more pronounced in old mice than in young mice.
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Affiliation(s)
- Sarita Giri
- Division of Periodontology and Endodontology, Department of Oral Rehabilitation, School of Dentistry, Health Sciences University of Hokkaido, Hokkaido, Japan
| | - Osamu Uehara
- Division of Disease Control and Molecular Epidemiology, Department of Oral Growth and Development, School of Dentistry, Health Sciences University of Hokkaido, Hokkaido, Japan
| | - Ayuko Takada
- Division of Biochemistry, Department of Oral Biology, School of Dentistry, Health Sciences University of Hokkaido, Hokkaido, Japan
| | - Durga Paudel
- Advanced Research Promotion Center, Health Sciences University of Hokkaido, Hokkaido, Japan
| | - Tetsuro Morikawa
- Division of Oral Medicine and Pathology, Department of Human Biology and Pathophysiology, School of Dentistry, Health Sciences University of Hokkaido, Hokkaido, Japan
| | - Toshiya Arakawa
- Division of Biochemistry, Department of Oral Biology, School of Dentistry, Health Sciences University of Hokkaido, Hokkaido, Japan
| | - Toshiyuki Nagasawa
- Division of Advanced Clinical Education, Department of Integrated Dental Education, School of Dentistry, Health Sciences University of Hokkaido, Hokkaido, Japan
| | - Yoshihiro Abiko
- Division of Oral Medicine and Pathology, Department of Human Biology and Pathophysiology, School of Dentistry, Health Sciences University of Hokkaido, Hokkaido, Japan
| | - Yasushi Furuichi
- Division of Periodontology and Endodontology, Department of Oral Rehabilitation, School of Dentistry, Health Sciences University of Hokkaido, Hokkaido, Japan
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11
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Kang N, Zhang Y, Xue F, Duan J, Chen F, Cai Y, Luan Q. Periodontitis induced by Porphyromonas gingivalis drives impaired glucose metabolism in mice. Front Cell Infect Microbiol 2022; 12:998600. [PMID: 36299624 PMCID: PMC9588948 DOI: 10.3389/fcimb.2022.998600] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2022] [Accepted: 09/16/2022] [Indexed: 07/22/2023] Open
Abstract
Periodontitis has been demonstrated to be bidirectionally associated with diabetes and has been recognized as a complication of diabetes. As a periodontal pathogen, Porphyromonas gingivalis is a possible pathogen linking periodontal disease and systemic diseases. It has also been found to be involved in the occurrence and development of diabetes. In this study, 6-week-old male C57BL/6 mice were orally administered the P. gingivalis strain ATCC381 for 22 weeks. Histological analysis of the gingival tissue and quantified analysis of alveolar bone loss were performed to evaluate periodontal destruction. Body weight, fasting glucose, glucose tolerance test (GTT), and insulin tolerance test (ITT) were used to evaluate glucose metabolism disorder. We then analyzed the expression profiles of inflammatory cytokines and chemokines in gingival tissue, the liver, and adipose tissue, as well as in serum. The results showed that mice in the P. gingivalis-administered group developed apparent gingival inflammation and more alveolar bone loss compared to the control group. After 22 weeks of P. gingivalis infection, significant differences were observed at 30 and 60 min for the GTT and at 15 min for the ITT. P. gingivalis-administered mice showed an increase in the mRNA expression levels of the pro-inflammatory cytokines (TNF-α, IL-6, IL-17, and IL-23) and chemokines (CCL2, CCL8, and CXCL10) in the gingiva and serum. The expression levels of the glucose metabolism-related genes were also changed in the liver and adipose tissue. Our results indicate that oral administration of P. gingivalis can induce changes in the inflammatory cytokines and chemokines in the gingiva and blood, can lead to alveolar bone loss and to inflammatory changes in the liver and adipose tissues, and can promote glucose metabolism disorder in mice.
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Affiliation(s)
- Ni Kang
- Department of Periodontology, Peking University School and Hospital of Stomatology and National Center of Stomatology and National Clinical Research Center for Oral Diseases and National Engineering Research Center of Oral Biomaterials and Digital Medical Devices and Beijing Key Laboratory of Digital Stomatology and Research Center of Engineering and Technology for Computerized Dentistry Ministry of Health and National Medical Products Administration (NMPA) Key Laboratory for Dental Materials, Beijing, China
- Central Laboratory, Peking University School and Hospital of Stomatology and National Center of Stomatology and National Clinical Research Center for Oral Diseases and National Engineering Research Center of Oral Biomaterials and Digital Medical Devices and Beijing Key Laboratory of Digital Stomatology and Research Center of Engineering and Technology for Computerized Dentistry Ministry of Health and National Medical Products Administration (NMPA) Key Laboratory for Dental Materials, Beijing, China
| | - Yong Zhang
- First Clinical Division, Peking University School and Hospital of Stomatology and National Center of Stomatology and National Clinical Research Center for Oral Diseases and National Engineering Research Center of Oral Biomaterials and Digital Medical Devices and Beijing Key Laboratory of Digital Stomatology and Research Center of Engineering and Technology for Computerized Dentistry Ministry of Health and National Medical Products Administration (NMPA) Key Laboratory for Dental Materials, Beijing, China
| | - Fei Xue
- First Clinical Division, Peking University School and Hospital of Stomatology and National Center of Stomatology and National Clinical Research Center for Oral Diseases and National Engineering Research Center of Oral Biomaterials and Digital Medical Devices and Beijing Key Laboratory of Digital Stomatology and Research Center of Engineering and Technology for Computerized Dentistry Ministry of Health and National Medical Products Administration (NMPA) Key Laboratory for Dental Materials, Beijing, China
| | - Jinyu Duan
- First Clinical Division, Peking University School and Hospital of Stomatology and National Center of Stomatology and National Clinical Research Center for Oral Diseases and National Engineering Research Center of Oral Biomaterials and Digital Medical Devices and Beijing Key Laboratory of Digital Stomatology and Research Center of Engineering and Technology for Computerized Dentistry Ministry of Health and National Medical Products Administration (NMPA) Key Laboratory for Dental Materials, Beijing, China
| | - Fan Chen
- Department of Stomatology, People’s Hospital of Peking University, Beijing, China
| | - Yu Cai
- Department of Periodontology, Peking University School and Hospital of Stomatology and National Center of Stomatology and National Clinical Research Center for Oral Diseases and National Engineering Research Center of Oral Biomaterials and Digital Medical Devices and Beijing Key Laboratory of Digital Stomatology and Research Center of Engineering and Technology for Computerized Dentistry Ministry of Health and National Medical Products Administration (NMPA) Key Laboratory for Dental Materials, Beijing, China
- Central Laboratory, Peking University School and Hospital of Stomatology and National Center of Stomatology and National Clinical Research Center for Oral Diseases and National Engineering Research Center of Oral Biomaterials and Digital Medical Devices and Beijing Key Laboratory of Digital Stomatology and Research Center of Engineering and Technology for Computerized Dentistry Ministry of Health and National Medical Products Administration (NMPA) Key Laboratory for Dental Materials, Beijing, China
| | - Qingxian Luan
- Department of Periodontology, Peking University School and Hospital of Stomatology and National Center of Stomatology and National Clinical Research Center for Oral Diseases and National Engineering Research Center of Oral Biomaterials and Digital Medical Devices and Beijing Key Laboratory of Digital Stomatology and Research Center of Engineering and Technology for Computerized Dentistry Ministry of Health and National Medical Products Administration (NMPA) Key Laboratory for Dental Materials, Beijing, China
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12
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Sufaru IG, Teslaru S, Pasarin L, Iovan G, Stoleriu S, Solomon SM. Host Response Modulation Therapy in the Diabetes Mellitus—Periodontitis Conjuncture: A Narrative Review. Pharmaceutics 2022; 14:pharmaceutics14081728. [PMID: 36015357 PMCID: PMC9414216 DOI: 10.3390/pharmaceutics14081728] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2022] [Revised: 08/12/2022] [Accepted: 08/17/2022] [Indexed: 11/30/2022] Open
Abstract
The inflammatory response of the host in periodontitis is the phenomenon that underlies the onset and evolution of periodontal destructive phenomena. A number of systemic factors, such as diabetes mellitus (DM), can negatively affect the patient with periodontitis, just as the periodontal disease can aggravate the status of the DM patient. Host response modulation therapy involves the use of anti-inflammatory and anti-oxidant products aimed at resolving inflammation, stopping destructive processes, and promoting periodontal healing, all important aspects in patients with high tissue loss rates, such as diabetic patients. This paper reviews the data available in the literature on the relationship between DM and periodontitis, the main substances modulating the inflammatory response (nonsteroidal anti-inflammatory drugs, sub-antimicrobial doses of doxycycline, or omega-3 fatty acids and their products, specialized pro-resolving mediators), as well as their application in diabetic patients.
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Affiliation(s)
- Irina-Georgeta Sufaru
- Department of Periodontology, Grigore T. Popa University of Medicine and Pharmacy, Universitatii Street 16, 700115 Iasi, Romania
| | - Silvia Teslaru
- Department of Periodontology, Grigore T. Popa University of Medicine and Pharmacy, Universitatii Street 16, 700115 Iasi, Romania
- Correspondence: (S.T.); (L.P.)
| | - Liliana Pasarin
- Department of Periodontology, Grigore T. Popa University of Medicine and Pharmacy, Universitatii Street 16, 700115 Iasi, Romania
- Correspondence: (S.T.); (L.P.)
| | - Gianina Iovan
- Department of Cariology and Restorative Dental Therapy, Grigore T. Popa University of Medicine and Pharmacy, Universitatii Street 16, 700115 Iasi, Romania
| | - Simona Stoleriu
- Department of Cariology and Restorative Dental Therapy, Grigore T. Popa University of Medicine and Pharmacy, Universitatii Street 16, 700115 Iasi, Romania
| | - Sorina Mihaela Solomon
- Department of Periodontology, Grigore T. Popa University of Medicine and Pharmacy, Universitatii Street 16, 700115 Iasi, Romania
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13
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Li D, Ren T, Li H, Liao G, Zhang X. Porphyromonas gingivalis: A key role in Parkinson's disease with cognitive impairment? Front Neurol 2022; 13:945523. [PMID: 35959396 PMCID: PMC9363011 DOI: 10.3389/fneur.2022.945523] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2022] [Accepted: 07/04/2022] [Indexed: 11/15/2022] Open
Abstract
Cognitive impairment (CI) is a common complication of Parkinson's disease (PD). The major features of Parkinson's disease with cognitive impairment (PD-CI) include convergence of α-Synuclein (α-Syn) and Alzheimer's disease (AD)-like pathologies, neuroinflammation, and dysbiosis of gut microbiota. Porphyromonas gingivalis (P. gingivalis) is an important pathogen in periodontitis. Recent research has suggested a role of P. gingivalis and its virulence factor in the pathogenesis of PD and AD, in particular concerning neuroinflammation and deposition of α-Synuclein (α-Syn) and amyloid-β (Aβ). Furthermore, in animal models, oral P. gingivalis could cause neurodegeneration through regulating the gut-brain axis, suggesting an oral-gut-brain axis might exist. In this article, we discussed the pathological characteristics of PD-CI and the role of P. gingivalis in them.
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Affiliation(s)
- Dongcheng Li
- Department of Neurology, Affiliated Maoming People's Hospital, Southern Medical University, Maoming, China
| | - Tengzhu Ren
- Department of Neurology, Guangdong Second Provincial General Hospital, Guangzhou, China
| | - Hao Li
- Department of Neurology, Affiliated Maoming People's Hospital, Southern Medical University, Maoming, China
| | - Geng Liao
- Department of Neurology, Affiliated Maoming People's Hospital, Southern Medical University, Maoming, China
| | - Xiong Zhang
- Department of Neurology, Affiliated Maoming People's Hospital, Southern Medical University, Maoming, China
- *Correspondence: Xiong Zhang
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14
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Liu J, Zhao W, Gao ZW, Liu N, Zhang WH, Ling H. Effects of Exogenous Hydrogen Sulfide on Diabetic Metabolic Disorders in db/db Mice Are Associated With Gut Bacterial and Fungal Microbiota. Front Cell Infect Microbiol 2022; 12:801331. [PMID: 35425717 PMCID: PMC9001961 DOI: 10.3389/fcimb.2022.801331] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2021] [Accepted: 03/02/2022] [Indexed: 01/15/2023] Open
Abstract
The effects of hydrogen sulfide (H2S) on diabetic metabolic disorders are still controversial, and the mechanisms underlying these effects remain largely unknown. This study was conducted to investigate the potential relationship between the gut microbiota and the improvement of diabetic metabolic disorders by exogenous H2S in obese db/db mice. The db/db mice were treated with sodium hydrosulfide (NaHS) (80 μmol/kg), or vehicle for 16 weeks, respectively. We measured the serum H2S, obesity parameters, glucose homeostasis, and triglyceride. The sequencing of bacterial 16S rRNA gene and fungal internal transcribed spacer (ITS) in the cecal contents of NaHS-treated mice was performed to evaluate the gut microbial communities. We found that supplying exogenous H2S for 16 weeks significantly inhibited the increase of serum triglyceride, blood glucose, and insulin levels and altered specifically the gut bacterial microbiota structure in db/db mice. The relative abundance of some bacterial genera was correlated with the H2S or blood glucose level. Indeed, exogenous H2S increased Firmicutes and decreased Bacteroidetes at the phylum level along with changes of abundance of multifarious genera. Among them, Unclassified_Enterobacteriaceae, Prevotella, and Lactobacillus decreased and Unclassified_Ruminococcaceae, Oscillospira, Ruminococcus, Sutterella, and Desulfovibrio increased. For fungi, exogenous H2S decreased the abundance of Candida and Aspergillus. Here we demonstrated that, in diabetes, microbial dysbiosis may not be just limited to bacteria due to the inter-linked metabolic interactions among bacteria and fungi in the gut. The beneficial effects of exogenous H2S on diabetic metabolic disorders are likely associated with the alterations of specific microbiota.
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Affiliation(s)
- Jian Liu
- Department of Microbiology, Harbin Medical University, Harbin, China
| | - Wei Zhao
- Department of Microbiology, Harbin Medical University, Harbin, China
| | - Zi-Wei Gao
- Department of Microbiology, Harbin Medical University, Harbin, China
| | - Ning Liu
- Department of Pathophysiology, Harbin Medical University, Harbin, China
| | - Wei-Hua Zhang
- Department of Pathophysiology, Harbin Medical University, Harbin, China
- *Correspondence: Hong Ling, ; Wei-Hua Zhang,
| | - Hong Ling
- Department of Microbiology, Harbin Medical University, Harbin, China
- Wu Lien-Teh Institute, Harbin Medical University, Harbin, China
- Heilongjiang Provincial Key Laboratory of Infection and Immunity, Harbin, China
- Key Laboratory of Pathogen Biology, Harbin, China
- *Correspondence: Hong Ling, ; Wei-Hua Zhang,
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15
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Zhou Z, Sun B, Yu D, Zhu C. Gut Microbiota: An Important Player in Type 2 Diabetes Mellitus. Front Cell Infect Microbiol 2022; 12:834485. [PMID: 35242721 PMCID: PMC8886906 DOI: 10.3389/fcimb.2022.834485] [Citation(s) in RCA: 68] [Impact Index Per Article: 34.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2021] [Accepted: 01/24/2022] [Indexed: 01/10/2023] Open
Abstract
Type 2 diabetes mellitus (T2DM) is one of the common metabolic diseases in the world. Due to the rise in morbidity and mortality, it has become a global health problem. To date, T2DM still cannot be cured, and its intervention measures mainly focus on glucose control as well as the prevention and treatment of related complications. Interestingly, the gut microbiota plays an important role in the development of metabolic diseases, especially T2DM. In this review, we introduce the characteristics of the gut microbiota in T2DM population, T2DM animal models, and diabetic complications. In addition, we describe the molecular mechanisms linking host and the gut microbiota in T2DM, including the host molecules that induce gut microbiota dysbiosis, immune and inflammatory responses, and gut microbial metabolites involved in pathogenesis. These findings suggest that we can treat T2DM and its complications by remodeling the gut microbiota through interventions such as drugs, probiotics, prebiotics, fecal microbiota transplantation (FMT) and diets.
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Affiliation(s)
- Zheng Zhou
- Department of Chinese Medicine, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Bao Sun
- Department of Pharmacy, The Second Xiangya Hospital, Central South University, Changsha, China
- Institution of Clinical Pharmacy, Central South University, Changsha, China
| | - Dongsheng Yu
- Department of Chinese Medicine, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
- *Correspondence: Dongsheng Yu, ; Chunsheng Zhu,
| | - Chunsheng Zhu
- Department of Chinese Medicine, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
- *Correspondence: Dongsheng Yu, ; Chunsheng Zhu,
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16
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Barutta F, Bellini S, Durazzo M, Gruden G. Novel Insight into the Mechanisms of the Bidirectional Relationship between Diabetes and Periodontitis. Biomedicines 2022; 10:biomedicines10010178. [PMID: 35052857 PMCID: PMC8774037 DOI: 10.3390/biomedicines10010178] [Citation(s) in RCA: 23] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2021] [Revised: 01/13/2022] [Accepted: 01/14/2022] [Indexed: 02/01/2023] Open
Abstract
Periodontitis and diabetes are two major global health problems despite their prevalence being significantly underreported and underestimated. Both epidemiological and intervention studies show a bidirectional relationship between periodontitis and diabetes. The hypothesis of a potential causal link between the two diseases is corroborated by recent studies in experimental animals that identified mechanisms whereby periodontitis and diabetes can adversely affect each other. Herein, we will review clinical data on the existence of a two-way relationship between periodontitis and diabetes and discuss possible mechanistic interactions in both directions, focusing in particular on new data highlighting the importance of the host response. Moreover, we will address the hypothesis that trained immunity may represent the unifying mechanism explaining the intertwined association between diabetes and periodontitis. Achieving a better mechanistic insight on clustering of infectious, inflammatory, and metabolic diseases may provide new therapeutic options to reduce the risk of diabetes and diabetes-associated comorbidities.
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17
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Wang T, Ishikawa T, Sasaki M, Chiba T. Oral and Gut Microbial Dysbiosis and Non-alcoholic Fatty Liver Disease: The Central Role of Porphyromonas gingivalis. Front Med (Lausanne) 2022; 9:822190. [PMID: 35308549 PMCID: PMC8924514 DOI: 10.3389/fmed.2022.822190] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2021] [Accepted: 01/19/2022] [Indexed: 02/05/2023] Open
Abstract
Gut microbiota play many important roles, such as the regulation of immunity and barrier function in the intestine, and are crucial for maintaining homeostasis in living organisms. The disruption in microbiota is called dysbiosis, which has been associated with various chronic inflammatory conditions, food allergies, colorectal cancer, etc. The gut microbiota is also affected by several other factors such as diet, antibiotics and other medications, or bacterial and viral infections. Moreover, there are some reports on the oral-gut-liver axis indicating that the disruption of oral microbiota affects the intestinal biota. Non-alcoholic fatty liver disease (NAFLD) is one of the systemic diseases caused due to the dysregulation of the oral-gut-liver axis. NAFLD is the most common liver disease reported in the developed countries. It includes liver damage ranging from simple steatosis to nonalcoholic steatohepatitis (NASH), cirrhosis, and cancer. Recently, accumulating evidence supports an association between NAFLD and dysbiosis of oral and gut microbiota. Periodontopathic bacteria, especially Porphyromonas gingivalis, have been correlated with the pathogenesis and development of NAFLD based on the clinical and basic research, and immunology. P. gingivalis was detected in the liver, and lipopolysaccharide from this bacteria has been shown to be involved in the progression of NAFLD, thereby indicating a direct role of P. gingivalis in NAFLD. Moreover, P. gingivalis induces dysbiosis of gut microbiota, which promotes the progression of NAFLD, through disrupting both metabolic and immunologic pathways. Here, we review the roles of microbial dysbiosis in NAFLD. Focusing on P. gingivalis, we evaluate and summarize the most recent advances in our understanding of the relationship between oral-gut microbiome symbiosis and the pathogenesis and progression of non-alcoholic fatty liver disease, as well as discuss novel strategies targeting both P. gingivalis and microbial dysbiosis.
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Affiliation(s)
- Ting Wang
- Division of Internal Medicine, Department of Oral Medicine, Iwate Medical University, Morioka, Japan
- Ting Wang
| | - Taichi Ishikawa
- Division of Molecular Microbiology, Department of Microbiology, Iwate Medical University, Morioka, Japan
| | - Minoru Sasaki
- Division of Molecular Microbiology, Department of Microbiology, Iwate Medical University, Morioka, Japan
| | - Toshimi Chiba
- Division of Internal Medicine, Department of Oral Medicine, Iwate Medical University, Morioka, Japan
- *Correspondence: Toshimi Chiba
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