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Tang Y, Nie H, Zhang Y, Wei Y, Huang Y, Zhuang Y, Yang W, Zhu Y. Effects of Sjogren's syndrome and high sugar diet on oral microbiome in patients with rampant caries: a clinical study. BMC Oral Health 2024; 24:361. [PMID: 38515087 PMCID: PMC10956276 DOI: 10.1186/s12903-024-04150-8] [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: 11/07/2023] [Accepted: 03/15/2024] [Indexed: 03/23/2024] Open
Abstract
OBJECTIVE The purpose of this study was to assess the composition of the oral microbial flora of adults with rampant caries in China to provide guidance for treatment. PATIENTS AND METHODS Sixty human salivary and supragingival plaque samples were collected. They were characterized into four groups: patients with rampant caries with Sjogren's syndrome (RC-SS) or high-sugar diet (RC-HD), common dental caries (DC), and healthy individuals (HP). The 16S rRNA V3-V4 region of the bacterial DNA was detected by Illumina sequencing. PCoA based on OTU with Bray-Curtis algorithm, the abundance of each level, LEfSe analysis, network analysis, and PICRUSt analysis were carried out between the four groups and two sample types. Clinical and demographic data were compared using analysis of variance (ANOVA) or the nonparametric Kruskal-Wallis rank-sum test, depending on the normality of the data, using GraphPad Prism 8 (P < 0.05). RESULTS OTU principal component analysis revealed a significant difference between healthy individuals and those with RC-SS. In the saliva of patients with rampant caries, the relative abundance of Firmicutes increased significantly at the phylum level. Further, Streptocpccus, Veillonella, Prevotella, and Dialister increased, while Neisseria and Haemophilus decreased at the genus level. Veillonella increased in the plaque samples of patients with rampant caries. CONCLUSION Both salivary and dental plaque composition were significantly different between healthy individuals and patients with rampant caries. This study provides a microbiological basis for exploring the etiology of rampant caries. CLINICAL RELEVANCE This study provides basic information on the flora of the oral cavity in adults with rampant caries in China. These findings could serve as a reference for the treatment of this disease.
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Affiliation(s)
- Yifei Tang
- Department of Endodontic, Nanjing Stomatological Hospital, Affiliated Hospital of Medical School, Research Institute of Stomatology, Nanjing University, Nanjing, China
| | - Hua Nie
- Department of Endodontic, Nanjing Stomatological Hospital, Affiliated Hospital of Medical School, Research Institute of Stomatology, Nanjing University, Nanjing, China
| | - Yu Zhang
- Department of Endodontic, Nanjing Stomatological Hospital, Affiliated Hospital of Medical School, Research Institute of Stomatology, Nanjing University, Nanjing, China
| | - Yuan Wei
- Department of Endodontic, Nanjing Stomatological Hospital, Affiliated Hospital of Medical School, Research Institute of Stomatology, Nanjing University, Nanjing, China
| | - Yequan Huang
- Department of Endodontic, Nanjing Stomatological Hospital, Affiliated Hospital of Medical School, Research Institute of Stomatology, Nanjing University, Nanjing, China
| | - Yuan Zhuang
- Department of Endodontic, Nanjing Stomatological Hospital, Affiliated Hospital of Medical School, Research Institute of Stomatology, Nanjing University, Nanjing, China
| | - Weidong Yang
- Department of Endodontic, Nanjing Stomatological Hospital, Affiliated Hospital of Medical School, Research Institute of Stomatology, Nanjing University, Nanjing, China.
| | - Yanan Zhu
- Department of Endodontic, Nanjing Stomatological Hospital, Affiliated Hospital of Medical School, Research Institute of Stomatology, Nanjing University, Nanjing, China.
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Carelli M, Zatochna I, Sandri A, Burlacchini G, Rosa A, Baccini F, Signoretto C. Effect of A Fluoride Toothpaste Containing Enzymes and Salivary Proteins on Periodontal Pathogens in Subjects with Black Stain: A Pilot Study. Eur J Dent 2024; 18:109-116. [PMID: 36870327 PMCID: PMC10959611 DOI: 10.1055/s-0043-1761193] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/06/2023] Open
Abstract
OBJECTIVE Black stain (BS) is an extrinsic dental discoloration particularly difficult to treat. Although its etiology is not fully clear yet, chromogenic bacteria inside the oral cavity seem to be involved. In this pilot study, we evaluated whether a toothpaste containing enzymes and salivary proteins could improve oral health and reduce the presence of periodontal pathogens in subjects predisposed to BS discoloration. MATERIALS AND METHODS Twenty-six subjects were enrolled in the study: 10 subjects without BS; 16 subjects with BS, randomly assigned in two groups: test (n = 8) and control (n = 8). The test group used a toothpaste containing sodium fluoride, enzymes, and salivary proteins. The control group used a toothpaste with amine fluoride. At enrollment and after 14 weeks, participants were subjected to professional oral hygiene, evaluation of BS (through Shourie index) and oral health status, collection of saliva and dental plaque samples. The presence of periodontal pathogens in plaque and saliva of all subjects was investigated by molecular analysis (PCR). STATISTICAL ANALYSIS The prevalence of investigated microbial species in patients with/without BS was performed by Chi-squared test. The variation in the prevalence of the investigated species after treatment in test and control group was analyzed by t-test. RESULTS Clinical evaluation showed that 86% of participants with BS had a reduction in the Shourie index, independently from the toothpaste used. In particular, a greater reduction in the Shourie index was observed in subjects using an electric toothbrush. We did not observe an effect of the fluoride toothpaste containing enzymes and salivary proteins on the composition of the oral microbiota of the test subjects in comparison with controls. When comparing all subjects with BS (n = 16) and without BS (n = 10), P. gingivalis detection was significantly higher in saliva samples collected from subjects with BS (p = 0.0129). CONCLUSION We verified that the use of an enzyme-containing toothpaste alone is not sufficient to prevent the formation of BS dental pigmentation in subjects predisposed to this discoloration. Mechanical cleaning, especially using electrical toothbrushes, seems to be useful to counteract BS formation. Moreover, our results suggest a possible association between BS and the presence of P. gingivalis at the salivary level.
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Affiliation(s)
- Maria Carelli
- Department of Diagnostics and Public Health, Microbiology Section, University of Verona, Verona, Italy
| | - Iuliia Zatochna
- Dental Hygiene Unit, Azienda Provinciale per i Servizi Sanitari of Trento, Rovereto, Italy
| | - Angela Sandri
- Department of Diagnostics and Public Health, Microbiology Section, University of Verona, Verona, Italy
| | - Gloria Burlacchini
- Department of Diagnostics and Public Health, Microbiology Section, University of Verona, Verona, Italy
| | - Angelica Rosa
- Department of Diagnostics and Public Health, Microbiology Section, University of Verona, Verona, Italy
| | - Francesca Baccini
- Dental Hygiene Unit, Azienda Provinciale per i Servizi Sanitari of Trento, Rovereto, Italy
| | - Caterina Signoretto
- Department of Diagnostics and Public Health, Microbiology Section, University of Verona, Verona, Italy
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Zhu D, Qiao P, Zhou Q, Sun H, Xin B, Wu B, Tang C. Effect of 15 days -6° head-down bed rest on microbial communities of supragingival plaque in young men. Front Microbiol 2024; 15:1331023. [PMID: 38328428 PMCID: PMC10849213 DOI: 10.3389/fmicb.2024.1331023] [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: 10/31/2023] [Accepted: 01/04/2024] [Indexed: 02/09/2024] Open
Abstract
Introduction The microgravity environment astronauts experience during spaceflight can lead to an increased risk of oral diseases and possible changes in oral microecology. In this study, we aimed to assess changes in the microbial community of supragingival plaques to explore the effects of spaceflight microgravity environment on oral microecology. Methods Sixteen healthy male volunteers were recruited, and supragingival plaque samples were collected under -6° head-down bed rest (HDBR) at five-time points: day 1 before HDBR; days 5, 10, and 15 of HDBR; and day 6 of recovery. Bacterial genomic DNA was sequenced using gene sequencing technology with 16S ribosomal ribonucleic acid V3-V4 hypervariable region amplification and the obtained data were analyzed bioinformatically. Results Alpha diversity analysis showed a significant increase in species richness in supragingival plaque samples on day 15 of HDBR compared with that at pre-HDBR. Beta diversity analysis revealed that the community composition differed among the groups. Species distribution showed that, compared with those at pre-HDBR, the relative abundances of Corynebacterium and Aggregatibacter increased significantly during HDBR, while those of Veillonella, Streptococcus, and Lautropia decreased significantly. Moreover, compared with those at pre-HDBR, the relative abundance of Leptotrichia increased significantly on day 6 of recovery, whereas the relative abundances of Porphyromonas and Streptococcus decreased significantly. Network analysis showed that the interaction relationship between the dominant genera became simpler during HDBR, and the positive and negative correlations between them showed dynamic changes. Phylogenetic investigation of communities by reconstruction of unobserved states analysis showed that the amino acid metabolism function of plaque microorganisms was more enriched during HDBR. Discussion In summary, in a 15-day simulated microgravity environment, the diversity, species distribution, interaction relationship, and metabolic function of the supragingival plaque microbial community changed, which suggests that microgravity may affect the oral microecosystem by changing the balance of supragingival plaque microbial communities and further leading to the occurrence and development of oral diseases.
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Affiliation(s)
- Di Zhu
- 306th Clinical College of PLA, The Fifth Clinical College, Anhui Medical University, Beijing, China
- Department of Stomatology, PLA Strategic Support Force Medical Center, Beijing, China
| | - Pengyan Qiao
- Department of Stomatology, PLA Strategic Support Force Medical Center, Beijing, China
| | - Qian Zhou
- Department of Stomatology, PLA Strategic Support Force Medical Center, Beijing, China
| | - Hui Sun
- 306th Clinical College of PLA, The Fifth Clinical College, Anhui Medical University, Beijing, China
- Department of Stomatology, PLA Strategic Support Force Medical Center, Beijing, China
| | - Bingmu Xin
- Engineering Research Center of Human Circadian Rhythm and Sleep, Space Science and Technology Institute, Shenzhen, China
| | - Bin Wu
- China Astronaut Research and Training Center, Beijing, China
| | - Chuhua Tang
- 306th Clinical College of PLA, The Fifth Clinical College, Anhui Medical University, Beijing, China
- Department of Stomatology, PLA Strategic Support Force Medical Center, Beijing, China
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Tian J, Zhao B, Wang J, Du W, Ma W, Xia B, Xu H, Chen T, He X, Qin M. The short-term impact of comprehensive caries treatment on the supragingival microbiome of severe early childhood caries. Int J Paediatr Dent 2024. [PMID: 38173170 DOI: 10.1111/ipd.13151] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/08/2023] [Revised: 11/28/2023] [Accepted: 12/05/2023] [Indexed: 01/05/2024]
Abstract
BACKGROUND Children affected by severe early childhood caries (S-ECC) usually need comprehensive caries treatment due to the extensive of caries. How the oral microbiome changes after caries therapy within the short-term warrant further study. AIM This study aimed to investigate the short-term impact of comprehensive caries treatment on the supragingival plaque microbiome of S-ECC children. DESIGN Thirty-three children aged 2-4 years with severe caries (dt > 7) were recruited. Comprehensive caries treatment was performed under general anesthesia in one session and included restoration, pulp treatment, extraction, and fluoride application. Supragingival plaque was sampled pre- and 1-month posttreatment. The genomic DNA of the supragingival plaque was extracted, and bacterial 16S ribosomal RNA gene sequencing was performed. RESULTS Our data showed that the microbial community evenness significantly decreased posttreatment. Furthermore, comprehensive caries treatment led to more diverse microbial structures among the subjects. The interbacterial interactions reflected by the microbial community's co-occurrence network tended to be less complex posttreatment. Caries treatment increased the relative abundance of Corynebacterium matruchotii, Corynebacterium durum, Actinomyces naeslundii, and Saccharibacteria HMT-347, as well as Aggregatibacter HMT-458 and Haemophilus influenzae. Meanwhile, the relative abundance of Streptococcus mutans, three species from Leptotrichia, Neisseria bacilliformis, and Provotella pallens significantly decreased posttreatment. CONCLUSION Our results suggested that comprehensive caries treatment may contribute to the reconstruction of a healthier supragingival microbiome.
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Affiliation(s)
- Jing Tian
- Department of Pediatric Dentistry, Peking University School and Hospital of Stomatology, National Center for Stomatology, National Clinical Research Center for Oral Diseases, National Engineering Laboratory for Digital and Material Technology of Stomatology, Beijing Key Laboratory of Digital Stomatology, Beijing, China
| | - Bingqian Zhao
- Department of Pediatric Dentistry, Peking University School and Hospital of Stomatology, National Center for Stomatology, National Clinical Research Center for Oral Diseases, National Engineering Laboratory for Digital and Material Technology of Stomatology, Beijing Key Laboratory of Digital Stomatology, Beijing, China
| | - Jingyan Wang
- Department of Pediatric Dentistry, Peking University School and Hospital of Stomatology, National Center for Stomatology, National Clinical Research Center for Oral Diseases, National Engineering Laboratory for Digital and Material Technology of Stomatology, Beijing Key Laboratory of Digital Stomatology, Beijing, China
| | - Wenbin Du
- State Key Laboratory of Microbial Resources, Institute of Microbiology, Chinese Academy of Sciences, Beijing, China
| | - Wenli Ma
- Department of Pediatric Dentistry, Peking University School and Hospital of Stomatology, National Center for Stomatology, National Clinical Research Center for Oral Diseases, National Engineering Laboratory for Digital and Material Technology of Stomatology, Beijing Key Laboratory of Digital Stomatology, Beijing, China
| | - Bin Xia
- Department of Pediatric Dentistry, Peking University School and Hospital of Stomatology, National Center for Stomatology, National Clinical Research Center for Oral Diseases, National Engineering Laboratory for Digital and Material Technology of Stomatology, Beijing Key Laboratory of Digital Stomatology, Beijing, China
| | - He Xu
- Department of Pediatric Dentistry, Peking University School and Hospital of Stomatology, National Center for Stomatology, National Clinical Research Center for Oral Diseases, National Engineering Laboratory for Digital and Material Technology of Stomatology, Beijing Key Laboratory of Digital Stomatology, Beijing, China
| | - Tsute Chen
- Department of Microbiology, The Forsyth Institute, Cambridge, Massachusetts, USA
- Department of Oral Medicine, Infection and Immunity, Harvard School of Dental Medicine, Boston, Massachusetts, USA
| | - Xuesong He
- Department of Microbiology, The Forsyth Institute, Cambridge, Massachusetts, USA
- Department of Oral Medicine, Infection and Immunity, Harvard School of Dental Medicine, Boston, Massachusetts, USA
| | - Man Qin
- Department of Pediatric Dentistry, Peking University School and Hospital of Stomatology, National Center for Stomatology, National Clinical Research Center for Oral Diseases, National Engineering Laboratory for Digital and Material Technology of Stomatology, Beijing Key Laboratory of Digital Stomatology, Beijing, China
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5
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Arishi RA, Lai CT, Geddes DT, Stinson LF. Impact of breastfeeding and other early-life factors on the development of the oral microbiome. Front Microbiol 2023; 14:1236601. [PMID: 37744908 PMCID: PMC10513450 DOI: 10.3389/fmicb.2023.1236601] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2023] [Accepted: 08/25/2023] [Indexed: 09/26/2023] Open
Abstract
The oral cavity is home to the second most diverse microbiome in the human body. This community contributes to both oral and systemic health. Acquisition and development of the oral microbiome is a dynamic process that occurs over early life; however, data regarding longitudinal assembly of the infant oral microbiome is scarce. While numerous factors have been associated with the composition of the infant oral microbiome, early feeding practices (breastfeeding and the introduction of solids) appear to be the strongest determinants of the infant oral microbiome. In the present review, we draw together data on the maternal, infant, and environmental factors linked to the composition of the infant oral microbiome, with a focus on early nutrition. Given evidence that breastfeeding powerfully shapes the infant oral microbiome, the review explores potential mechanisms through which human milk components, including microbes, metabolites, oligosaccharides, and antimicrobial proteins, may interact with and shape the infant oral microbiome. Infancy is a unique period for the oral microbiome. By enhancing our understanding of oral microbiome assembly in early life, we may better support both oral and systemic health throughout the lifespan.
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Affiliation(s)
- Roaa A. Arishi
- School of Molecular Sciences, The University of Western Australia, Perth, WA, Australia
- Ministry of Health, Riyadh, Saudi Arabia
| | - Ching T. Lai
- School of Molecular Sciences, The University of Western Australia, Perth, WA, Australia
| | - Donna T. Geddes
- School of Molecular Sciences, The University of Western Australia, Perth, WA, Australia
| | - Lisa F. Stinson
- School of Molecular Sciences, The University of Western Australia, Perth, WA, Australia
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Liu Y, Daniel SG, Kim HE, Koo H, Korostoff J, Teles F, Bittinger K, Hwang G. Addition of cariogenic pathogens to complex oral microflora drives significant changes in biofilm compositions and functionalities. MICROBIOME 2023; 11:123. [PMID: 37264481 DOI: 10.1186/s40168-023-01561-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/19/2023] [Accepted: 04/27/2023] [Indexed: 06/03/2023]
Abstract
BACKGROUND Dental caries is a microbe and sugar-mediated biofilm-dependent oral disease. Of particular significance, a virulent type of dental caries, known as severe early childhood caries (S-ECC), is characterized by the synergistic polymicrobial interaction between the cariogenic bacterium, Streptococcus mutans, and an opportunistic fungal pathogen, Candida albicans. Although cross-sectional studies reveal their important roles in caries development, these exhibit limitations in determining the significance of these microbial interactions in the pathogenesis of the disease. Thus, it remains unclear the mechanism(s) through which the cross-kingdom interaction modulates the composition of the plaque microbiome. Here, we employed a novel ex vivo saliva-derived microcosm biofilm model to assess how exogenous pathogens could impact the structural and functional characteristics of the indigenous native oral microbiota. RESULTS Through shotgun whole metagenome sequencing, we observed that saliva-derived biofilm has decreased richness and diversity but increased sugar-related metabolism relative to the planktonic phase. Addition of S. mutans and/or C. albicans to the native microbiome drove significant changes in its bacterial composition. In addition, the effect of the exogenous pathogens on microbiome diversity and taxonomic abundances varied depending on the sugar type. While the addition of S. mutans induced a broader effect on Kyoto Encyclopedia of Genes and Genomes (KEGG) ortholog abundances with glucose/fructose, S. mutans-C. albicans combination under sucrose conditions triggered unique and specific changes in microbiota composition/diversity as well as specific effects on KEGG pathways. Finally, we observed the presence of human epithelial cells within the biofilms via confocal microscopy imaging. CONCLUSIONS Our data revealed that the presence of S. mutans and C. albicans, alone or in combination, as well as the addition of different sugars, induced unique alterations in both the composition and functional attributes of the biofilms. In particular, the combination of S. mutans and C. albicans seemed to drive the development (and perhaps the severity) of a dysbiotic/cariogenic oral microbiome. Our work provides a unique and pragmatic biofilm model for investigating the functional microbiome in health and disease as well as developing strategies to modulate the microbiome. Video Abstract.
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Affiliation(s)
- Yuan Liu
- Department of Preventive and Restorative Sciences, School of Dental Medicine, University of Pennsylvania, Philadelphia, PA, 19104, USA
| | - Scott G Daniel
- Department of Gastroenterology, Hepatology, and Nutrition, Children's Hospital of Philadelphia, Philadelphia, PA, 19104, USA
| | - Hye-Eun Kim
- Department of Preventive and Restorative Sciences, School of Dental Medicine, University of Pennsylvania, Philadelphia, PA, 19104, USA
| | - Hyun Koo
- Department of Orthodontics, School of Dental Medicine, University of Pennsylvania, Philadelphia, PA, 19104, USA
- Center for Innovation & Precision Dentistry, School of Dental Medicine, School of Engineering and Applied Sciences, University of Pennsylvania, Philadelphia, PA, 19104, USA
| | - Jonathan Korostoff
- Department of Periodontics, School of Dental Medicine, University of Pennsylvania, Philadelphia, PA, 19104, USA
| | - Flavia Teles
- Center for Innovation & Precision Dentistry, School of Dental Medicine, School of Engineering and Applied Sciences, University of Pennsylvania, Philadelphia, PA, 19104, USA
- Department of Basic & Translational Sciences, School of Dental Medicine, University of Pennsylvania, Philadelphia, PA, 19104, USA
| | - Kyle Bittinger
- Department of Gastroenterology, Hepatology, and Nutrition, Children's Hospital of Philadelphia, Philadelphia, PA, 19104, USA.
| | - Geelsu Hwang
- Department of Preventive and Restorative Sciences, School of Dental Medicine, University of Pennsylvania, Philadelphia, PA, 19104, USA.
- Center for Innovation & Precision Dentistry, School of Dental Medicine, School of Engineering and Applied Sciences, University of Pennsylvania, Philadelphia, PA, 19104, USA.
- Department of Chemical and Biomolecular Engineering, College of Engineering, Yonsei University, Seoul, 03722, Republic of Korea.
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7
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Xiao X, Liu S, Deng H, Song Y, Zhang L, Song Z. Advances in the oral microbiota and rapid detection of oral infectious diseases. Front Microbiol 2023; 14:1121737. [PMID: 36814562 PMCID: PMC9939651 DOI: 10.3389/fmicb.2023.1121737] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2022] [Accepted: 01/13/2023] [Indexed: 02/09/2023] Open
Abstract
Several studies have shown that the dysregulation of the oral microbiota plays a crucial role in human health conditions, such as dental caries, periodontal disease, oral cancer, other oral infectious diseases, cardiovascular diseases, diabetes, bacteremia, and low birth weight. The use of traditional detection methods in conjunction with rapidly advancing molecular techniques in the diagnosis of harmful oral microorganisms has expanded our understanding of the diversity, location, and function of the microbiota associated with health and disease. This review aimed to highlight the latest knowledge in this field, including microbial colonization; the most modern detection methods; and interactions in disease progression. The next decade may achieve the rapid diagnosis and precise treatment of harmful oral microorganisms.
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Affiliation(s)
- Xuan Xiao
- Department of Oral Mucosa, Shanghai Stomatological Hospital, Fudan University, Shanghai, China,Shanghai Key Laboratory of Craniomaxillofacial Development and Diseases, Shanghai Stomatological Hospital, Fudan University, Shanghai, China
| | - Shangfeng Liu
- Shanghai Key Laboratory of Craniomaxillofacial Development and Diseases, Shanghai Stomatological Hospital, Fudan University, Shanghai, China
| | - Hua Deng
- Translational Medicine Center, Guangdong Women and Children Hospital, Guangzhou, China
| | - Yuhan Song
- Department of Oral Mucosa, Shanghai Stomatological Hospital, Fudan University, Shanghai, China,Shanghai Key Laboratory of Craniomaxillofacial Development and Diseases, Shanghai Stomatological Hospital, Fudan University, Shanghai, China
| | - Liang Zhang
- Translational Medicine Center, Guangdong Women and Children Hospital, Guangzhou, China,Liang Zhang,
| | - Zhifeng Song
- Department of Oral Mucosa, Shanghai Stomatological Hospital, Fudan University, Shanghai, China,Shanghai Key Laboratory of Craniomaxillofacial Development and Diseases, Shanghai Stomatological Hospital, Fudan University, Shanghai, China,*Correspondence: Zhifeng Song,
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Fungal composition in saliva and plaque in children with caries: Differences and influencing factors. MEDICINE IN MICROECOLOGY 2023. [DOI: 10.1016/j.medmic.2023.100076] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023] Open
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Butcher MC, Short B, Veena CLR, Bradshaw D, Pratten JR, McLean W, Shaban SMA, Ramage G, Delaney C. Meta-analysis of caries microbiome studies can improve upon disease prediction outcomes. APMIS 2022; 130:763-777. [PMID: 36050830 PMCID: PMC9825849 DOI: 10.1111/apm.13272] [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: 05/24/2022] [Accepted: 08/22/2022] [Indexed: 01/11/2023]
Abstract
As one of the most prevalent infective diseases worldwide, it is crucial that we not only know the constituents of the oral microbiome in dental caries but also understand its functionality. Herein, we present a reproducible meta-analysis to effectively report the key components and the associated functional signature of the oral microbiome in dental caries. Publicly available sequencing data were downloaded from online repositories and subjected to a standardized analysis pipeline before analysis. Meta-analyses identified significant differences in alpha and beta diversities of carious microbiomes when compared to healthy ones. Additionally, machine learning and receiver operator characteristic analysis showed an ability to discriminate between healthy and disease microbiomes. We identified from importance values, as derived from random forest analyses, a group of genera, notably containing Selenomonas, Aggregatibacter, Actinomyces and Treponema, which can be predictive of dental caries. Finally, we propose the most appropriate study design for investigating the microbiome of dental caries by synthesizing the studies, which had the most accurate differentiation based on random forest modelling. In conclusion, we have developed a non-biased, reproducible pipeline, which can be applied to microbiome meta-analyses of multiple diseases, but importantly we have derived from our meta-analysis a key group of organisms that can be used to identify individuals at risk of developing dental caries based on oral microbiome inhabitants.
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Affiliation(s)
- Mark C. Butcher
- Oral Sciences Research Group, Glasgow Dental School, School of Medicine, Dentistry and Nursing, College of Medical, Veterinary and Life SciencesUniversity of GlasgowGlasgowUK
| | - Bryn Short
- Oral Sciences Research Group, Glasgow Dental School, School of Medicine, Dentistry and Nursing, College of Medical, Veterinary and Life SciencesUniversity of GlasgowGlasgowUK
| | - Chandra Lekha Ramalingam Veena
- Oral Sciences Research Group, Glasgow Dental School, School of Medicine, Dentistry and Nursing, College of Medical, Veterinary and Life SciencesUniversity of GlasgowGlasgowUK
| | | | | | - William McLean
- Oral Sciences Research Group, Glasgow Dental School, School of Medicine, Dentistry and Nursing, College of Medical, Veterinary and Life SciencesUniversity of GlasgowGlasgowUK
| | - Suror Mohamad Ahmad Shaban
- Oral Sciences Research Group, Glasgow Dental School, School of Medicine, Dentistry and Nursing, College of Medical, Veterinary and Life SciencesUniversity of GlasgowGlasgowUK
| | - Gordon Ramage
- Oral Sciences Research Group, Glasgow Dental School, School of Medicine, Dentistry and Nursing, College of Medical, Veterinary and Life SciencesUniversity of GlasgowGlasgowUK
| | - Christopher Delaney
- Oral Sciences Research Group, Glasgow Dental School, School of Medicine, Dentistry and Nursing, College of Medical, Veterinary and Life SciencesUniversity of GlasgowGlasgowUK
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Hoffstedt T, Skov Hansen LB, Twetman S, Sonesson M. Effect of an enzyme-containing mouthwash on the dental biofilm and salivary microbiome in patients with fixed orthodontic appliances: a randomized placebo-controlled pilot trial. Eur J Orthod 2022; 45:96-102. [PMID: 36214729 PMCID: PMC9912700 DOI: 10.1093/ejo/cjac062] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
BACKGROUND Mouthwashes containing oral antiseptics or enzymes are suggested suitable for controlling biofilm accumulation in patients with fixed appliances and thereby limiting unwanted side effects during the orthodontic treatment. OBJECTIVES To evaluate the effect of an enzyme-based mouthwash on the amount of dental biofilm and the composition of the salivary microbiome in patients undergoing treatment with fixed orthodontic appliances. TRIAL DESIGN Randomized double-blind placebo-controlled trial. MATERIAL AND METHODS In total, 35 young adolescents (14-18 years) under treatment with fixed appliances were consecutively enrolled and randomly allocated to an experimental or a placebo group by opening a computer-generated numbered envelope. The subjects were instructed to rinse twice daily during an intervention period of 8 days with experimental mouthwash or placebo without active enzymes. Unstimulated whole saliva samples were collected at baseline and after 8 days. The participants and examiner were blinded for the allocation. The primary outcome was the Orthodontic Plaque Index (OPI) and the secondary was the composition of the salivary microbiome. RESULTS In total, 28 adolescents (21 females and 7 males) completed the trial and there were no differences in age, clinical, or microbial findings between the test (n = 14) and the placebo group (n = 14) at baseline. We found a decreased OPI in the test group after 8 days and the difference was statistically significant compared with the placebo group (P < 0.05). There were no significant treatment effects on the richness and global composition of the salivary microbiome. HARMS In total, one participant in the test group claimed nausea and abandoned the project. In total, two participants did not like the taste of the mouthwash but used it as instructed. No other adverse events or side effects were reported. LIMITATIONS Short-term pilot trials may by nature be sensitive for selection and performance biases and are not designed to unveil persisting effects. CONCLUSION Daily use of enzyme-containing mouthwash reduced the amount of dental biofilm in adolescents under treatment with the fixed orthodontic appliances, without affecting the composition of the salivary microbiota. ETHICAL APPROVAL Approved by the Regional Ethical Board, Lund, Sweden (Dnr 2020-05221). CLINICAL TRIAL REGISTRATION NCT05033015.
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Affiliation(s)
- Tove Hoffstedt
- Orthodontic clinic, public dental health, Karlshamn, Region Blekinge, Sweden
| | | | - Svante Twetman
- Department of Odontology, Faculty of Health and Medical Sciences, University of Copenhagen, Denmark
| | - Mikael Sonesson
- Correspondence to: Mikael Sonesson, Department of Orthodontics, Faculty of Odontology, Malmö University, Carl Gustavs väg 34, SE-205 06 Malmö, Sweden. E-mail:
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Song X, Greiner-Tollersrud OK, Zhou H. Oral Microbiota Variation: A Risk Factor for Development and Poor Prognosis of Esophageal Cancer. Dig Dis Sci 2022; 67:3543-3556. [PMID: 34505256 DOI: 10.1007/s10620-021-07245-2] [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: 04/28/2021] [Accepted: 08/23/2021] [Indexed: 12/24/2022]
Abstract
Recent studies have shown that oral microbiota play an important role in the esophageal cancer (EC) initiation and progression, suggesting that oral microbiota is a new risk factor for EC. The composition of the microbes inhabiting the oral cavity could be perturbed with continuous factors such as smoking, alcohol consumption, and inflammation. The microbial alteration involves the decrease of beneficial species and the increase of pathogenic species. Experimental evidences suggest a significant role of oral commensal organisms in protecting hosts against EC. By contrast, oral pathogens, especially Porphyromonas gingivalis and Fusobacterium nucleatum, give rise to the risk for developing EC through their pro-inflammatory and pro-tumorigenic activities. The presences of oral dysbiosis, microbial biofilm, and periodontitis in EC patients are found to be associated with invasive cancer phenotypes and poor prognosis. The mechanism of oral bacteria in EC progression is complex, which involves a combination of cytokines, chemokines, oncogenic signaling pathways, cell surface receptors, the degradation of extracellular matrix, and cell apoptosis. From a clinical perspective, good oral hygiene, professional oral care, and rational use of antibiotics bring positive impacts on oral microbial balance, thus helping individuals reduce the risk of EC, inhibiting postoperative complications among EC patients, and improving the efficiency of chemoradiotherapy. However, current oral hygiene practices mainly focus on the oral bacteria-based predictive and preventive purposes. It is still far from implementing microbiota-dependent regulation as a therapy for EC. Further explorations are needed to render oral microbiota a potential target for treating EC.
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Affiliation(s)
- Xiaobo Song
- Department of Microbiology, Dalian Medical University, No.9 West Section Lvshun South Road, Dalian, 116044, Liaoning Province, China.,Department of Medical Biology, Faculty of Health Sciences, University of Tromsø, 9037, Tromsø, Norway
| | - Ole K Greiner-Tollersrud
- Department of Medical Biology, Faculty of Health Sciences, University of Tromsø, 9037, Tromsø, Norway
| | - Huimin Zhou
- Department of Microbiology, Dalian Medical University, No.9 West Section Lvshun South Road, Dalian, 116044, Liaoning Province, China.
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12
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Wang Y, Zhang Y, Pan T, Lin H, Zhou Y. Metabolic differences of the oral microbiome related to dental caries - A pilot study. Arch Oral Biol 2022; 141:105471. [PMID: 35689993 DOI: 10.1016/j.archoralbio.2022.105471] [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: 02/03/2022] [Revised: 05/31/2022] [Accepted: 06/02/2022] [Indexed: 11/16/2022]
Abstract
OBJECTIVE We aimed to investigate the composition and functions discrepancy of supragingival plaque associated with active deciduous teeth caries in mixed dentitions. DESIGN Thirty-three subjects with mixed dentition participated in this study. Children with deciduous teeth caries (dt ≥ 3) were recruited to the caries group, whereas children without deciduous teeth caries (dt = 0) were recruited to the caries-free group. Plaque were collected from deciduous teeth surface and permanent teeth surface respectively. A total of 66 samples of dental plaque were collected and conserved. Illumina 16S rRNA sequencing and diversity analysis were performed for microbiome. Untargeted liquid chromatograph-mass (LC-MS) and partial least squares discriminant analysis were performed for metabolome. RESULTS A dominant microbiome of 8 phyla and 22 genera were detected. The alpha diversity indices did not detect differences between the caries and caries-free groups (p > 0.05). Beta diversity analysis showed that the microbiota composition was similar between subgroups. Comparative analysis at genus level did not detect difference between caries and caries-free subgroups. The metabolomics analysis yielded 419 biochemical metabolites, 56 of which were related to caries status. Metabolites in glucose metabolism and byproducts of oxidative stress were identified as related to dental caries in mixed dentition. Dominant bacteria are positively correlated with metabolites, such as Streptococcus and organic acids. CONCLUSIONS The upgrade of glucose metabolism and oxidative stress was observed in caries status. Functions discrepancy of oral microbiome may be more pronounced than the composition of oral microbiome with active dental caries in mixed dentitions.
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Affiliation(s)
- Yinuo Wang
- Hospital of Stomatology, Guanghua School of Stomatology, Sun Yat-Sen University, Guangzhou, China; Guangdong Key Laboratory for Dental Disease Prevention and Control, Sun Yat-Sen University, Guangzhou, China.
| | - Yuwen Zhang
- Hospital of Stomatology, Guanghua School of Stomatology, Sun Yat-Sen University, Guangzhou, China; Guangdong Key Laboratory for Dental Disease Prevention and Control, Sun Yat-Sen University, Guangzhou, China.
| | - Ting Pan
- Hospital of Stomatology, Guanghua School of Stomatology, Sun Yat-Sen University, Guangzhou, China; Guangdong Key Laboratory for Dental Disease Prevention and Control, Sun Yat-Sen University, Guangzhou, China.
| | - Huancai Lin
- Hospital of Stomatology, Guanghua School of Stomatology, Sun Yat-Sen University, Guangzhou, China; Guangdong Key Laboratory for Dental Disease Prevention and Control, Sun Yat-Sen University, Guangzhou, China.
| | - Yan Zhou
- Hospital of Stomatology, Guanghua School of Stomatology, Sun Yat-Sen University, Guangzhou, China; Guangdong Key Laboratory for Dental Disease Prevention and Control, Sun Yat-Sen University, Guangzhou, China.
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13
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Dinis M, Traynor W, Agnello M, Sim MS, He X, Shi W, Lux R, Tran NC. Tooth-Specific Streptococcus mutans Distribution and Associated Microbiome. Microorganisms 2022; 10:microorganisms10061129. [PMID: 35744648 PMCID: PMC9230744 DOI: 10.3390/microorganisms10061129] [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] [Received: 05/04/2022] [Revised: 05/22/2022] [Accepted: 05/26/2022] [Indexed: 12/10/2022] Open
Abstract
Dental caries is multifactorial and polymicrobial in nature and remains one of the most common oral diseases. While caries research has focused on Streptococcus mutans as the main etiological pathogen, its impact at the tooth level is not fully understood. In this cross-sectional study, the levels and distribution of S. mutans in the posterior teeth at different dentition stages were investigated along with the corresponding tooth-specific microbiome. Occlusal plaque samples of 87 individual posterior teeth were collected from thirty children in three dentition stages (primary, mixed, and permanent). The S. mutans levels in the occlusal plaque of individual posterior teeth were quantified with qPCR, and those with preferential colonization were selected for tooth-specific microbiome analysis using 16S rRNA sequencing. Results: Quantification of S. mutans levels in the occlusal plaque confirmed the preferential colonization on the first primary and permanent molars. These teeth were selected for further tooth-specific microbiome sequencing, as they also displayed high caries experience. There were significant differences in the relative abundance of the four most abundant genera: Neisseria, Streptococcus, Rothia, and Veillonella. Furthermore, the tooth-level caries experience was correlated with a reduction in the microbiome diversity. Analyzing the different tooth-associated microbial communities, distinct tooth-specific core microbiomes were identified. Conclusions: Our findings suggest that caries susceptibility at the tooth level, depending on tooth type and dentition stage, is influenced by individual species as well as plaque community.
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Affiliation(s)
- Márcia Dinis
- Section of Pediatric Dentistry, School of Dentistry, University of California, Los Angeles, CA 90095, USA; (M.D.); (W.T.)
| | - William Traynor
- Section of Pediatric Dentistry, School of Dentistry, University of California, Los Angeles, CA 90095, USA; (M.D.); (W.T.)
| | - Melissa Agnello
- Section of Oral Biology, School of Dentistry, University of California, Los Angeles, CA 90095, USA; (M.A.); (X.H.); (W.S.)
| | - Myung-Shin Sim
- Division of General Internal Medicine and Health Services Research, Department of Medicine Statistics Core, University of California, Los Angeles, CA 90095, USA;
| | - Xuesong He
- Section of Oral Biology, School of Dentistry, University of California, Los Angeles, CA 90095, USA; (M.A.); (X.H.); (W.S.)
- The Forsyth Institute, Microbiology, Cambridge, MA 02142, USA
| | - Wenyuan Shi
- Section of Oral Biology, School of Dentistry, University of California, Los Angeles, CA 90095, USA; (M.A.); (X.H.); (W.S.)
- The Forsyth Institute, Microbiology, Cambridge, MA 02142, USA
| | - Renate Lux
- Section of Periodontics, School of Dentistry, University of California, Los Angeles, CA 90095, USA;
| | - Nini Chaichanasakul Tran
- Section of Pediatric Dentistry, School of Dentistry, University of California, Los Angeles, CA 90095, USA; (M.D.); (W.T.)
- Correspondence:
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14
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Li X, Liu Y, Yang X, Li C, Song Z. The Oral Microbiota: Community Composition, Influencing Factors, Pathogenesis, and Interventions. Front Microbiol 2022; 13:895537. [PMID: 35572634 PMCID: PMC9100676 DOI: 10.3389/fmicb.2022.895537] [Citation(s) in RCA: 53] [Impact Index Per Article: 26.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2022] [Accepted: 04/06/2022] [Indexed: 12/12/2022] Open
Abstract
The human oral cavity provides a habitat for oral microbial communities. The complexity of its anatomical structure, its connectivity to the outside, and its moist environment contribute to the complexity and ecological site specificity of the microbiome colonized therein. Complex endogenous and exogenous factors affect the occurrence and development of the oral microbiota, and maintain it in a dynamic balance. The dysbiotic state, in which the microbial composition is altered and the microecological balance between host and microorganisms is disturbed, can lead to oral and even systemic diseases. In this review, we discuss the current research on the composition of the oral microbiota, the factors influencing it, and its relationships with common oral diseases. We focus on the specificity of the microbiota at different niches in the oral cavity, the communities of the oral microbiome, the mycobiome, and the virome within oral biofilms, and interventions targeting oral pathogens associated with disease. With these data, we aim to extend our understanding of oral microorganisms and provide new ideas for the clinical management of infectious oral diseases.
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Affiliation(s)
- Xinyi Li
- School of Stomatology, Southwest Medical University, Luzhou, China
| | - Yanmei Liu
- School of Stomatology, Southwest Medical University, Luzhou, China
| | - Xingyou Yang
- Molecular Biotechnology Platform, Public Center of Experimental Technology, School of Basic Medical Sciences, Southwest Medical University, Luzhou, China
| | - Chengwen Li
- Molecular Biotechnology Platform, Public Center of Experimental Technology, School of Basic Medical Sciences, Southwest Medical University, Luzhou, China
- *Correspondence: Chengwen Li,
| | - Zhangyong Song
- Molecular Biotechnology Platform, Public Center of Experimental Technology, School of Basic Medical Sciences, Southwest Medical University, Luzhou, China
- Zhangyong Song,
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15
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Blum J, Silva M, Byrne SJ, Butler CA, Adams GG, Reynolds EC, Dashper SG. Temporal development of the infant oral microbiome. Crit Rev Microbiol 2022; 48:730-742. [PMID: 35015598 DOI: 10.1080/1040841x.2021.2025042] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
The human oral microbiome is becoming recognized as playing roles in health and disease well beyond the oral cavity over the lifetime of the individual. The oral microbiome is hypothesized to result from specific colonization events followed by a reproducible and ordered development of complex bacterial communities. Colonization events, proliferation, succession and subsequent community development are dependent on a range of host and environmental factors, most notably the neonate diet. It is now becoming apparent that early childhood and prenatal influences can have long term effects on the development of human oral microbiomes. In this review, the temporal development of the infant human oral microbiome is examined, with the effects of prenatal and postnatal influences and the roles of specific bacteria. Dietary and environmental factors, especially breastfeeding, have a significant influence on the development of the infant oral microbiome. The evidence available regarding the roles and functions of early colonizing bacteria is still limited, and gaps in knowledge where further research is needed to elucidate these specific roles in relation to health and disease still exist.
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Affiliation(s)
- Jordan Blum
- Centre for Oral Health Research, Melbourne Dental School, University of Melbourne, Carlton, Australia
| | - Mihiri Silva
- Centre for Oral Health Research, Melbourne Dental School, University of Melbourne, Carlton, Australia
| | - Samantha J Byrne
- Centre for Oral Health Research, Melbourne Dental School, University of Melbourne, Carlton, Australia
| | - Catherine A Butler
- Centre for Oral Health Research, Melbourne Dental School, University of Melbourne, Carlton, Australia
| | - Geoffrey G Adams
- Centre for Oral Health Research, Melbourne Dental School, University of Melbourne, Carlton, Australia
| | - Eric C Reynolds
- Centre for Oral Health Research, Melbourne Dental School, University of Melbourne, Carlton, Australia
| | - Stuart G Dashper
- Centre for Oral Health Research, Melbourne Dental School, University of Melbourne, Carlton, Australia
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16
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Chandran S, Peedikayil F. Insights to oral microbiome from birth to infancy. INTERNATIONAL JOURNAL OF PEDODONTIC REHABILITATION 2022. [DOI: 10.4103/ijpr.ijpr_15_21] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
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17
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Bhaumik D, Manikandan D, Foxman B. Cariogenic and oral health taxa in the oral cavity among children and adults: A scoping review. Arch Oral Biol 2021; 129:105204. [PMID: 34246103 PMCID: PMC8364507 DOI: 10.1016/j.archoralbio.2021.105204] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2021] [Revised: 06/08/2021] [Accepted: 06/26/2021] [Indexed: 02/08/2023]
Abstract
OBJECTIVE To review published oral microbiome studies and create a comprehensive list of bacterial species found in saliva and dental plaque among healthy children and adults associated with presence of carious lesions and caries-free state (oral health). DESIGN This review followed PRISMA-ScR guidelines. We searched published studies querying PUBMED and EMBASE using the following keywords: (plaque OR saliva) AND caries AND (next generation sequencing OR checkerboard OR 16s rRNA or qPCR). Studies were limited to human studies published in English between January 1, 2010 and June 24, 2020 that included > 10 caries-active and > 10 caries-free participants, and assessed the entire bacterial community. RESULTS Our search strategy identified 298 articles. After exclusion criteria, 22 articles remained; we considered 2 studies that examined saliva and plaque as separate studies, for a total of 24 studies. Species associated with caries or oral health varied widely among studies reviewed, with notable differences by age and biologic sample type. No bacterial species was associated with caries in all studies. Streptococcus mutans was found more frequently among those with caries (14/24 (58.3 %)) and Fusobacterium periodonticum was found more frequently among those that were caries-free (5/24 (20.8 %)). CONCLUSION No bacterial species was associated with caries or oral health across all studies supporting multiple pathways to cariogenesis. However, the variation may be due to sampling at different time points during caries development, varying methods of specimen sampling, storage, sequencing or analysis or differences in host factors such as age.
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Affiliation(s)
- Deesha Bhaumik
- Department of Epidemiology, University of Michigan School of Public Health, Ann Arbor, MI, United States.
| | - Divya Manikandan
- University of Michigan College of Literature, Science, and the Arts, Ann Arbor, MI, United States.
| | - Betsy Foxman
- Center of Molecular and Clinical Epidemiology of Infectious Diseases, Department of Epidemiology, University of Michigan School of Public Health, Ann Arbor, MI, United States.
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18
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Hussein H. Oral Sampling Techniques. Methods Mol Biol 2021; 2327:17-29. [PMID: 34410637 DOI: 10.1007/978-1-0716-1518-8_2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/06/2023]
Abstract
The human oral cavity is a major point of entry for microorganisms, many of which live and multiply in the mouth. In addition, it provides an accessible site for sampling compared to other parts of the body; however, caution should be taken during oral sampling as many factors contribute to the microbial diversity in a site-dependent manner. The accessibility of the oral cavity and its microbial diversity emphasize the crucial need to avoid cross-contamination during the sampling procedure. In this chapter, we describe various detailed oral sampling procedures. These methods include supragingival dental plaque sampling, subgingival dental plaque sampling, oral mucosal sampling, and endodontic sampling methods for extracted teeth or in the patient's mouth. The proposed protocols provide tips to avoid contamination between different oral sources of bacteria and possible alternatives to the tools used.
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Affiliation(s)
- Heba Hussein
- Oral Medicine, Diagnosis, and Periodontology Department, Faculty of Dentistry, Cairo University, Cairo, Egypt. .,Department of Oral Medicine and Diagnostic Sciences, College of Dentistry, University of Illinois at Chicago, Chicago, IL, USA.
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19
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Lee E, Park S, Um S, Kim S, Lee J, Jang J, Jeong HO, Shin J, Kang J, Lee S, Jeong T. Microbiome of Saliva and Plaque in Children According to Age and Dental Caries Experience. Diagnostics (Basel) 2021; 11:diagnostics11081324. [PMID: 34441259 PMCID: PMC8393408 DOI: 10.3390/diagnostics11081324] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2021] [Revised: 07/20/2021] [Accepted: 07/20/2021] [Indexed: 01/20/2023] Open
Abstract
Dental caries are one of the chronic diseases caused by organic acids made from oral microbes. However, there was a lack of knowledge about the oral microbiome of Korean children. The aim of this study was to analyze the metagenome data of the oral microbiome obtained from Korean children and to discover bacteria highly related to dental caries with machine learning models. Saliva and plaque samples from 120 Korean children aged below 12 years were collected. Bacterial composition was identified using Illumina HiSeq sequencing based on the V3–V4 hypervariable region of the 16S rRNA gene. Ten major genera accounted for approximately 70% of the samples on average, including Streptococcus, Neisseria, Corynebacterium, and Fusobacterium. Differential abundant analyses revealed that Scardovia wiggsiae and Leptotrichia wadei were enriched in the caries samples, while Neisseria oralis was abundant in the non-caries samples of children aged below 6 years. The caries and non-caries samples of children aged 6–12 years were enriched in Streptococcus mutans and Corynebacterium durum, respectively. The machine learning models based on these differentially enriched taxa showed accuracies of up to 83%. These results confirmed significant alterations in the oral microbiome according to dental caries and age, and these differences can be used as diagnostic biomarkers.
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Affiliation(s)
- Eungyung Lee
- Department of Pediatric Dentistry, Dental Research Institute, Pusan National University Dental Hospital, Yangsan 50612, Korea; (E.L.); (J.S.)
| | - Suhyun Park
- Department of Biomedical Engineering, College of Information-Bio Convergence Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Korea; (S.P.); (S.K.); (J.L.); (J.J.); (H.-o.J.)
| | | | - Seunghoon Kim
- Department of Biomedical Engineering, College of Information-Bio Convergence Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Korea; (S.P.); (S.K.); (J.L.); (J.J.); (H.-o.J.)
| | - Jaewoong Lee
- Department of Biomedical Engineering, College of Information-Bio Convergence Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Korea; (S.P.); (S.K.); (J.L.); (J.J.); (H.-o.J.)
| | - Jinho Jang
- Department of Biomedical Engineering, College of Information-Bio Convergence Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Korea; (S.P.); (S.K.); (J.L.); (J.J.); (H.-o.J.)
| | - Hyoung-oh Jeong
- Department of Biomedical Engineering, College of Information-Bio Convergence Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Korea; (S.P.); (S.K.); (J.L.); (J.J.); (H.-o.J.)
| | - Jonghyun Shin
- Department of Pediatric Dentistry, Dental Research Institute, Pusan National University Dental Hospital, Yangsan 50612, Korea; (E.L.); (J.S.)
- Department of Pediatric Dentistry, School of Dentistry, Institute of Translational Dental Science, Pusan National University, Yangsan 50612, Korea
| | - Jihoon Kang
- Helixco Inc., Ulsan 44919, Korea;
- Correspondence: (J.K.); (S.L.); (T.J.); Tel.: +82-52-262-0991 (J.K.); +82-52-217-2663 (S.L.); +82-55-360-5181 (T.J.)
| | - Semin Lee
- Department of Biomedical Engineering, College of Information-Bio Convergence Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Korea; (S.P.); (S.K.); (J.L.); (J.J.); (H.-o.J.)
- Correspondence: (J.K.); (S.L.); (T.J.); Tel.: +82-52-262-0991 (J.K.); +82-52-217-2663 (S.L.); +82-55-360-5181 (T.J.)
| | - Taesung Jeong
- Department of Pediatric Dentistry, Dental Research Institute, Pusan National University Dental Hospital, Yangsan 50612, Korea; (E.L.); (J.S.)
- Department of Pediatric Dentistry, School of Dentistry, Institute of Translational Dental Science, Pusan National University, Yangsan 50612, Korea
- Correspondence: (J.K.); (S.L.); (T.J.); Tel.: +82-52-262-0991 (J.K.); +82-52-217-2663 (S.L.); +82-55-360-5181 (T.J.)
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20
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Yang X, He L, Yan S, Chen X, Que G. The impact of caries status on supragingival plaque and salivary microbiome in children with mixed dentition: a cross-sectional survey. BMC Oral Health 2021; 21:319. [PMID: 34172026 PMCID: PMC8229229 DOI: 10.1186/s12903-021-01683-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2020] [Accepted: 06/19/2021] [Indexed: 12/12/2022] Open
Abstract
Background Supragingival plaque and saliva are commonly used for microbiome analysis. Many epidemiological studies have identified deciduous teeth caries as a risk factor for caries development in first permanent molar (FPM); nevertheless, to the best of our knowledge, there are no reports on the effects of deciduous teeth caries on the microbiome of healthy FPM. Additionally, it remains unclear whether saliva can be used instead of supragingival plaque for caries microbial studies. Therefore, we aimed to elucidate this issue, and to characterize and compare the oral microbiome of healthy FPMs in children with different caries statuses and that from children with and without caries in a similar microhabitat, by PacBio sequencing. Currently, few studies have investigated the oral microbiome of children using this technique. Methods Thirty children (aged 7–9 years) with mixed dentition were enrolled; 15 had dental caries, and 15 did not. Supragingival plaques of deciduous molars and maxillary FPMs, and non-stimulating saliva samples were collected. DNA was extracted and the v1–v9 regions of 16S rRNA were amplified. Subsequently, PacBio sequencing and bioinformatic analyses were performed for microbiome identification. Results The microbial alpha diversity of the saliva samples was lower than that of the supragingival plaque (p < 0.05); however, no differences were detected between deciduous teeth and FPMs (p > 0.05). In addition, the alpha and beta diversity of children with and without caries was also similar (p > 0.05). Nonmetric multidimensional scaling and Adonis analyses indicated that the microbial structure of salivary and supragingival plaque samples differ (p < 0.05). Further analysis of deciduous teeth plaque showed that Streptococcus mutans, Propionibacterium acidifaciens, and Veillonella dispar were more abundant in children with caries than in those without (p < 0.05); while in FPMs plaque, Selenomonas noxia was more abundant in healthy children (p < 0.05). No differences in microorganisms abundance were found in the saliva subgroups (p > 0.05). Conclusion We have determined that supragingival plaque was the best candidate for studying carious microbiome. Furthermore, S. mutans, V. dispar, and P. acidifaciens were highly associated with deciduous teeth caries. S. noxia may be associated with the abiding health of FPM; however, this requires additional studies. Supplementary Information The online version contains supplementary material available at 10.1186/s12903-021-01683-0.
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Affiliation(s)
- Xiaoxia Yang
- Stomatological Hospital, Southern Medical University, Guangzhou, 510280, China
| | - Lidan He
- Stomatological Hospital, Southern Medical University, Guangzhou, 510280, China
| | - Siqi Yan
- Stomatological Hospital, Southern Medical University, Guangzhou, 510280, China
| | - Xinyi Chen
- Stomatological Hospital, Southern Medical University, Guangzhou, 510280, China
| | - Guoying Que
- Stomatological Hospital, Southern Medical University, Guangzhou, 510280, China.
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21
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Li S, Huang S, Guo Y, Zhang Y, Zhang L, Li F, Tan K, Lu J, Chen Z, Guo Q, Tang Y, Teng F, Yang F. Geographic Variation Did Not Affect the Predictive Power of Salivary Microbiota for Caries in Children With Mixed Dentition. Front Cell Infect Microbiol 2021; 11:680288. [PMID: 34222048 PMCID: PMC8250437 DOI: 10.3389/fcimb.2021.680288] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2021] [Accepted: 05/21/2021] [Indexed: 12/12/2022] Open
Abstract
Dental caries is one of the most prevalent chronic oral diseases, affecting approximately half of children worldwide. The microbial composition of dental caries may depend on age, oral health, diet, and geography, yet the effect of geography on these microbiomes is largely underexplored. Here, we profiled and compared saliva microbiota from 130 individuals aged 6 to 8 years old, representing both healthy children (H group) and children with caries-affected (C group) from two geographical regions of China: a northern city (Qingdao group) and a southern city (Guangzhou group). First, the saliva microbiota exhibited profound differences in diversity and composition between the C and H groups. The caries microbiota featured a lower alpha diversity and more variable community structure than the healthy microbiota. Furthermore, the relative abundance of several genera (e.g., Lactobacillus, Gemella, Cryptobacterium and Mitsuokella) was significantly higher in the C group than in the H group (p<0.05). Next, geography dominated over disease status in shaping salivary microbiota, and a wide array of salivary bacteria was highly predictive of the individuals’ city of origin. Finally, we built a universal diagnostic model based on 14 bacterial species, which can diagnose caries with 87% (AUC=86.00%) and 85% (AUC=91.02%) accuracy within each city and 83% accuracy across cities (AUC=92.17%). Although the detection rate of Streptococcus mutans in populations is not very high, it could be regarded as a single biomarker to diagnose caries with decent accuracy. These findings demonstrated that despite the large effect size of geography, a universal model based on salivary microbiota has the potential to diagnose caries across the Chinese child population.
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Affiliation(s)
- Shanshan Li
- School of Stomatology, Qingdao University, Qingdao, China
| | - Shi Huang
- Department of Pediatrics and Center for Microbiome Innovation at Jacobs School of Engineering, University of California, San Diego, CA, United States
| | - Yi Guo
- Department of Computer Science and Technology, The Key Laboratory of Embedded System and Service Computing, Ministry of Education, Tongji University, Shanghai, China
| | - Ying Zhang
- School of Stomatology, Qingdao University, Qingdao, China
| | - Lijuan Zhang
- Stomatology Department, Women & Children's Health Care Hospital of Linyi, Linyi, China
| | - Fan Li
- School of Stomatology, Qingdao University, Qingdao, China
| | - Kaixuan Tan
- Stomatology Center, Qingdao Municipal Hospital, Qingdao, China
| | - Jie Lu
- Stomatology Center, Qingdao Municipal Hospital, Qingdao, China
| | - Zhenggang Chen
- Stomatology Center, Qingdao Municipal Hospital, Qingdao, China
| | - Qingyuan Guo
- Stomatology Center, Qingdao Municipal Hospital, Qingdao, China
| | - Yongping Tang
- Stomatology Center, Qingdao Municipal Hospital, Qingdao, China
| | - Fei Teng
- Single-Cell Center, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao, China
| | - Fang Yang
- School of Stomatology, Qingdao University, Qingdao, China.,Stomatology Center, Qingdao Municipal Hospital, Qingdao, China
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22
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Zhang Y, Zhu C, Cao G, Zhan J, Feng X, Chen X. Dynamic Alterations of Oral Microbiota Related to Halitosis in Preschool Children. Front Cell Infect Microbiol 2021; 11:599467. [PMID: 33718263 PMCID: PMC7952759 DOI: 10.3389/fcimb.2021.599467] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2020] [Accepted: 01/27/2021] [Indexed: 12/31/2022] Open
Abstract
Objective This longitudinal study was aimed to evaluate the dynamic shift in oral microbiota during the process of halitosis progression among preschool children. Methods The oral examinations, questionnaires and tongue coating specimens were collected at the baseline and 12-month follow-up. All children were oral healthy at the enrollment. At the 12-month follow-up, children who developed halitosis were included to the halitosis group (n = 10). While children who matched the age, gender, kindergarten and without halitosis were included to the control group (n = 10). 16S rRNA gene sequencing was used to reveal the shift of the tongue coating microbiome in these children during the 12- month period with the Human Oral Microbiome Database. Results A remarkable shift in relative abundance of specific bacteria was observed prior to halitosis development. The principal coordinates and alpha diversity analyses revealed different shifting patterns of halitosis and the healthy participants’ microbiome structures and bacterial diversity over the 12-month follow-up. Both groups showed variable microbiota community structures before the onset of halitosis. Halitosis-enriched species Prevotella melaninogenica, Actinomyces sp._HMT_180 and Saccharibacteria TM7_G-1_bacterium_HMT_352 were finally selected as biomarkers in the halitosis-onset prediction model after screening, with a prediction accuracy of 91.7%. Conclusions The microbiome composition and relative abundance of the tongue coatings in the halitosis and control groups remarkably differed, even prior to the onset of the clinical manifestations of halitosis. The halitosis prediction model constructed on the basis of tongue coating microbiome biomarkers indicated the microbial shifts before the halitosis onset. Therefore, this can be considered for the timely detection and intervention of halitosis in children.
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Affiliation(s)
- Yu Zhang
- Department of Preventive Dentistry, Shanghai Ninth People's Hospital, College of Stomatology, Shanghai Jiao Tong University School of Medicine, Shanghai, China.,National Clinical Research Center for Oral Diseases, Shanghai, China.,Shanghai Key Laboratory of Stomatology and Shanghai Research Institute of Stomatology, Shanghai, China
| | - Ce Zhu
- Department of Preventive Dentistry, Shanghai Ninth People's Hospital, College of Stomatology, Shanghai Jiao Tong University School of Medicine, Shanghai, China.,National Clinical Research Center for Oral Diseases, Shanghai, China.,Shanghai Key Laboratory of Stomatology and Shanghai Research Institute of Stomatology, Shanghai, China
| | - Guizhi Cao
- Department of Preventive Dentistry, Shanghai Ninth People's Hospital, College of Stomatology, Shanghai Jiao Tong University School of Medicine, Shanghai, China.,National Clinical Research Center for Oral Diseases, Shanghai, China.,Shanghai Key Laboratory of Stomatology and Shanghai Research Institute of Stomatology, Shanghai, China
| | - Jingyu Zhan
- Department of Preventive Dentistry, Shanghai Ninth People's Hospital, College of Stomatology, Shanghai Jiao Tong University School of Medicine, Shanghai, China.,National Clinical Research Center for Oral Diseases, Shanghai, China.,Shanghai Key Laboratory of Stomatology and Shanghai Research Institute of Stomatology, Shanghai, China
| | - Xiping Feng
- Department of Preventive Dentistry, Shanghai Ninth People's Hospital, College of Stomatology, Shanghai Jiao Tong University School of Medicine, Shanghai, China.,National Clinical Research Center for Oral Diseases, Shanghai, China.,Shanghai Key Laboratory of Stomatology and Shanghai Research Institute of Stomatology, Shanghai, China
| | - Xi Chen
- Department of Preventive Dentistry, Shanghai Ninth People's Hospital, College of Stomatology, Shanghai Jiao Tong University School of Medicine, Shanghai, China.,National Clinical Research Center for Oral Diseases, Shanghai, China.,Shanghai Key Laboratory of Stomatology and Shanghai Research Institute of Stomatology, Shanghai, China
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23
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Manzoor M, Lommi S, Furuholm J, Sarkkola C, Engberg E, Raju S, Viljakainen H. High abundance of sugar metabolisers in saliva of children with caries. Sci Rep 2021; 11:4424. [PMID: 33627735 PMCID: PMC7904847 DOI: 10.1038/s41598-021-83846-1] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2020] [Accepted: 02/05/2021] [Indexed: 11/17/2022] Open
Abstract
Dental caries is a biofilm-mediated, dynamic disease with early onset. A balanced salivary microbiota is a foundation of oral health, while dysbiosis causes tooth decay. We compared the saliva microbiota profiles in children with and without caries. The study consisted of 617 children aged 9–12 years from the Finnish Health in Teens (Fin-HIT) study with available register data on oral health. Caries status was summarised based on Decayed, Missing, and Filled Teeth (DMFT) index in permanent dentition. The children were then classified into the following two groups: DMFT value ≥ 1 was considered as cavitated caries lesions (hereafter called ‘caries’) (n = 208) and DMFT = 0 as ‘cavity free’ (n = 409). Bacterial 16S rRNA gene (V3–V4 regions) was amplified using PCR and sequenced by Illumina HiSeq. The mean age (SD) of the children was 11.7 (0.4) years and 56% were girls. The children had relatively good dental health with mean DMFT of 0.86 (1.97). Since sex was the key determinant of microbiota composition (p = 0.014), we focused on sex-stratified analysis. Alpha diversity indexes did not differ between caries and cavity free groups in either sexes (Shannon: p = 0.40 and 0.58; Inverse Simpson: p = 0.51 and 0.60, in boys and girls, respectively); neither did the composition differ between the groups (p = 0.070 for boys and p = 0.230 for girls). At the genus level, Paludibacter and Labrenzia had higher abundances in the caries group compared to cavity free group in both sexes (p < 0.001). Taken together, there were minor differences in saliva microbiota between children with and without caries. Potential biomarkers of caries were the sugar metabolisers Paludibacter and Labrenzia. These bacteria presumably enhance salivary acidification, which contributes to progression of dental caries. The clinical relevance of our findings warrants further studies.
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Affiliation(s)
| | - Sohvi Lommi
- Folkhälsan Research Center, Helsinki, Finland.,Department of Public Health, Faculty of Medicine, University of Helsinki, Helsinki, Finland
| | - Jussi Furuholm
- Department of Oral and Maxillofacial Diseases, Faculty of Medicine, University of Helsinki, Helsinki, Finland
| | | | - Elina Engberg
- Folkhälsan Research Center, Helsinki, Finland.,Department of Psychology and Logopedics, Faculty of Medicine, University of Helsinki, Helsinki, Finland
| | - Sajan Raju
- Folkhälsan Research Center, Helsinki, Finland
| | - Heli Viljakainen
- Folkhälsan Research Center, Helsinki, Finland. .,Faculty of Medicine, University of Helsinki, Helsinki, Finland.
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24
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Kawasaki M, Ikeda Y, Ikeda E, Takahashi M, Tanaka D, Nakajima Y, Arakawa S, Izumi Y, Miyake S. Oral infectious bacteria in dental plaque and saliva as risk factors in patients with esophageal cancer. Cancer 2020; 127:512-519. [PMID: 33156979 DOI: 10.1002/cncr.33316] [Citation(s) in RCA: 48] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2020] [Revised: 10/05/2020] [Accepted: 10/07/2020] [Indexed: 12/14/2022]
Abstract
BACKGROUND High levels of periodontopathic bacteria as well as Streptococcus anginosus were detected in cancer tissue from patients with esophageal cancer. An association between oral infectious bacteria and esophageal cancer has been reported. METHODS Characteristics of the oral microbiota and periodontal conditions were studied as clinicopathologic factors in patients with esophageal cancer. The study included 61 patients with esophageal cancer and 62 matched individuals without any cancers. Samples of subgingival dental plaque and unstimulated saliva were collected to evaluate the prevalence and abundance of the following oral bacteria using a real-time polymerase chain reaction assay: Aggregatibacter actinomycetemcomitans, Fusobacterium nucleatum, Porphyromonas gingivalis, Prevotella intermedia, Tannerella forsythia, Treponema denticola, and S. anginosus. RESULTS In the cancer group, the prevalence of all bacteria, with the exception of F. nucleatum, in dental plaque; the prevalence of A. actinomycetemcomitans in saliva; the abundance of all bacteria, with the exception of F. nucleatum and P. intermedia, in dental plaque; and the abundance of A. actinomycetemcomitans and S. anginosus in saliva were significantly higher. Furthermore, a logistic regression analysis suggested that the prevalence of T. forsythia and S. anginosus in dental plaque and of A. actinomycetemcomitans in saliva, as well as a drinking habit, were associated with a high risk of esophageal cancer, with a high odds ratio. CONCLUSIONS The current findings have potential implications for the early diagnosis of esophageal cancer.
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Affiliation(s)
- Machiko Kawasaki
- Department of Clinical Oncology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Yuichi Ikeda
- Department of Periodontology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Eri Ikeda
- Department of Periodontology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Momoko Takahashi
- Department of Clinical Oncology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Daiki Tanaka
- Department of Periodontology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | | | - Shinichi Arakawa
- Department of Lifetime Oral Health Care Sciences, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Yuichi Izumi
- Oral Care Perio Center, Southern TOHOKU General Hospital, Southern TOHOKU Research Institute for Neuroscience, Fukushima, Japan
| | - Satoshi Miyake
- Department of Clinical Oncology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
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25
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Nomura Y, Otsuka R, Hasegawa R, Hanada N. Oral Microbiome of Children Living in an Isolated Area in Myanmar. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2020; 17:ijerph17114033. [PMID: 32517039 PMCID: PMC7312721 DOI: 10.3390/ijerph17114033] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/05/2020] [Revised: 06/02/2020] [Accepted: 06/03/2020] [Indexed: 12/17/2022]
Abstract
Several studies have shown that the oral microbiome is related to systemic health, and a co-relation with several specific diseases has been suggested. The oral microbiome depends on environmental- and community-level factors. In this observational study, the oral microbiomes of children of isolated mountain people were analyzed with respect to the core oral microbiome and etiology of dental caries. We collected samples of supragingival plaque from children (age 9–13) living in the Chin state of Myanmar. After DNA extraction and purification, next-generation sequencing of the V3–V4 hypervariable regions of the 16S rRNA was conducted. From thirteen subjects, 263,458 valid reads and 640 operational taxonomic units were generated at a 97% identity cut-off value. At the phylum level, Proteobacteria was the most abundant, followed by Firmicutes and Bacteroides. Forty-four bacteria were detected in total from all the subjects. For children without dental caries, Proteobacteria was abundant. In contrast, in children with dental caries, Firmicutes and Bacteroides were abundant. The oral microbiome of children living in an isolated area may be affected by environmental- and community-level factors. Additionally, the composition of the oral microbiome may affect the risk of dental caries.
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26
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Rempfer E, Basinger H, Stawovy L, End B, Shockcor W, Minardi J. MitraClip-Associated Endocarditis: Emergency Department Diagnosis With Point of Care Ultrasound. J Emerg Med 2020; 58:942-946. [PMID: 32247658 DOI: 10.1016/j.jemermed.2020.02.016] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2019] [Revised: 01/15/2020] [Accepted: 02/16/2020] [Indexed: 12/15/2022]
Abstract
BACKGROUND Management of mitral valve regurgitation in patients with multiple comorbidities is complicated because of poor surgical candidacy. Less invasive techniques for these patients include the MitraClip device, an endovascular repair option used to reduce mitral valve regurgitation symptoms. However, complications include leaflet damage, stenosis, and infectious endocarditis. CASE REPORT Four years after MitraClip placement, an 80-year-old man presented to the emergency department with progressive dyspnea. He was diagnosed with MitraClip-associated infectious endocarditis by the emergency physician using point-of-care ultrasound. There are 6 reported cases of infective endocarditis in patients with MitraClip devices, with this being the first case identified using point-of-care ultrasound. This is also the first reported case of MitraClip-associated Corynebacterium endocarditis. WHY SHOULD AN EMERGENCY PHYSICIAN BE AWARE OF THIS?: The use of the MitraClip device and its echocardiographic appearance is not widely described in the published emergency medicine literature. Knowledge of this device, its appearance, and the potential complications is essential for emergency physicians caring for these patients. Rapid diagnosis may lead to earlier initiation of treatment and optimal disposition for these complex patients.
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Affiliation(s)
- Elizabeth Rempfer
- West Virginia University School of Medicine, Morgantown, West Virginia
| | - Hayden Basinger
- West Virginia University School of Medicine, Morgantown, West Virginia
| | - Lauren Stawovy
- Department of Internal Medicine, West Virginia University, Morgantown, West Virginia
| | - Bradley End
- Department of Emergency Medicine, West Virginia University, Morgantown, West Virginia
| | - William Shockcor
- Department of Internal Medicine, West Virginia University, Morgantown, West Virginia
| | - Joseph Minardi
- Department of Emergency Medicine, West Virginia University, Morgantown, West Virginia
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27
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Kahharova D, Brandt BW, Buijs MJ, Peters M, Jackson R, Eckert G, Katz B, Keels MA, Levy SM, Fontana M, Zaura E. Maturation of the Oral Microbiome in Caries-Free Toddlers: A Longitudinal Study. J Dent Res 2019; 99:159-167. [PMID: 31771395 PMCID: PMC6977153 DOI: 10.1177/0022034519889015] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Understanding the development of the oral microbiota in healthy children is of
great importance to oral and general health. However, limited data exist on a
healthy maturation of the oral microbial ecosystem in children. Moreover, the
data are biased by mislabeling “caries-free” populations. Therefore, we aimed to
characterize the healthy salivary and dental plaque microbiome in young
children. Caries-free (ICDAS [International Caries Detection and Assessment
System] score 0) children (n = 119) and their primary
caregivers were followed from 1 until 4 y of child age. Salivary and dental
plaque samples were collected from the children at 3 time points (T1, ~1 y old;
T2, ~2.5 y old; and T3, ~4 y old). Only saliva samples were collected from the
caregivers. Bacterial V4 16S ribosomal DNA amplicons were sequenced using
Illumina MiSeq. The reads were denoised and mapped to the zero-radius
operational taxonomic units (zOTUs). Taxonomy was assigned using HOMD. The
microbial profiles of children showed significant differences
(P = 0.0001) over time. Various taxa increased, including
Fusobacterium, Actinomyces, and
Corynebacterium, while others showed significant decreases
(e.g., Alloprevotella and Capnocytophaga) in
their relative abundances over time. Microbial diversity and child-caregiver
similarity increased most between 1 and 2.5 y of age while still not reaching
the complexity of the caregivers at 4 y of age. The microbiome at 1 y of age
differed the most from those at later time points. A single zOTU
(Streptococcus) was present in all samples
(n = 925) of the study. A large variation in the proportion
of shared zOTUs was observed within an individual child over time (2% to 42% of
zOTUs in saliva; 2.5% to 38% in dental plaque). These findings indicate that the
oral ecosystem of caries-free toddlers is highly heterogeneous and dynamic with
substantial changes in microbial composition over time and only few taxa
persisting across the 3 y of the study. The salivary microbiome of 4-y-old
children is still distinct from that of their caregivers.
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Affiliation(s)
- D Kahharova
- Department of Preventive Dentistry, Academic Centre for Dentistry Amsterdam (ACTA), Vrije Universiteit Amsterdam and University of Amsterdam, the Netherlands
| | - B W Brandt
- Department of Preventive Dentistry, Academic Centre for Dentistry Amsterdam (ACTA), Vrije Universiteit Amsterdam and University of Amsterdam, the Netherlands
| | - M J Buijs
- Department of Preventive Dentistry, Academic Centre for Dentistry Amsterdam (ACTA), Vrije Universiteit Amsterdam and University of Amsterdam, the Netherlands
| | - M Peters
- University of Michigan, Ann Arbor, MI, USA
| | - R Jackson
- Indiana University, Indianapolis, IN, USA
| | - G Eckert
- Indiana University, Indianapolis, IN, USA
| | - B Katz
- Indiana University, Indianapolis, IN, USA
| | | | - S M Levy
- University of Iowa, Iowa City, IA, USA
| | - M Fontana
- University of Michigan, Ann Arbor, MI, USA
| | - E Zaura
- Department of Preventive Dentistry, Academic Centre for Dentistry Amsterdam (ACTA), Vrije Universiteit Amsterdam and University of Amsterdam, the Netherlands
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28
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Mark Welch JL, Dewhirst FE, Borisy GG. Biogeography of the Oral Microbiome: The Site-Specialist Hypothesis. Annu Rev Microbiol 2019; 73:335-358. [PMID: 31180804 PMCID: PMC7153577 DOI: 10.1146/annurev-micro-090817-062503] [Citation(s) in RCA: 118] [Impact Index Per Article: 23.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Microbial communities are complex and dynamic, composed of hundreds of taxa interacting across multiple spatial scales. Advances in sequencing and imaging technology have led to great strides in understanding both the composition and the spatial organization of these complex communities. In the human mouth, sequencing results indicate that distinct sites host microbial communities that not only are distinguishable but to a meaningful degree are composed of entirely different microbes. Imaging suggests that the spatial organization of these communities is also distinct. Together, the literature supports the idea that most oral microbes are site specialists. A clear understanding of microbiota structure at different sites in the mouth enables mechanistic studies, informs the generation of hypotheses, and strengthens the position of oral microbiology as a model system for microbial ecology in general.
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Affiliation(s)
| | - Floyd E. Dewhirst
- The Forsyth Institute, Cambridge MA 02142 and Harvard School of Dental Medicine, Boston MA 02115
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29
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Xu H, Tian J, Hao W, Zhang Q, Zhou Q, Shi W, Qin M, He X, Chen F. Oral Microbiome Shifts From Caries-Free to Caries-Affected Status in 3-Year-Old Chinese Children: A Longitudinal Study. Front Microbiol 2018; 9:2009. [PMID: 30210479 PMCID: PMC6121080 DOI: 10.3389/fmicb.2018.02009] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2018] [Accepted: 08/09/2018] [Indexed: 01/14/2023] Open
Abstract
As one of the most prevalent human infectious diseases, dental caries results from dysbiosis of the oral microbiota driven by multiple factors. However, most of caries studies were cross-sectional and mainly focused on the differences in the oral microbiota between caries-free (CF) and caries-affected (CA) populations, while little is known about the dynamic shift in microbial composition, and particularly the change in species association pattern during disease transition. Here, we reported a longitudinal study of a 12-month follow-up of a cohort of 3-year-old children. Oral examinations and supragingival plaque collections were carried out at the beginning and every subsequent 6 months, for a total of three time points. All the children were CF at enrollment. Children who developed caries at 6-month follow-up but had not received any dental treatment until the end of the study were incorporated into the CA group. Children who remained CF at the end of the study were incorporated into the CF group. Using Illumina Miseq Sequencing of the 16S rRNA gene, we monitored the shift of supragingival microbiome during caries initiation and progression in children who developed caries over the 12-month study period. Intriguingly, principle coordinates analyses revealed two major shifting patterns in microbial structures during caries initiation and progression in CA group, but not in CF group. Dynamic co-occurring OTU network study showed that compared to CF group, there was significant increase in both number and intensity of correlations between microbial taxa, as well as the formation of tight clusters of specific bacteria in CA group. Furthermore, there were enhanced correlations, positive ones between CA-enriched taxa, and negative ones between CF-enriched and CA-enriched species within CA group. Our data suggested coordinated microbial interactions could be essential to caries pathogenesis. Most importantly, our study indicated that significant microbial shifts occur not only during caries development, but even in the sub-clinical state. Using supragingival microbiome profiles, we were able to construct a caries-onset prediction model with a prediction accuracy of 93.1%. Our study indicated that the microbial shifts prior to the onset of caries might potentially be used for the early diagnosis and prediction of caries.
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Affiliation(s)
- He Xu
- Department of Pediatric Dentistry, Peking University School and Hospital of Stomatology, Beijing, China
| | - Jing Tian
- Department of Pediatric Dentistry, Peking University School and Hospital of Stomatology, Beijing, China
| | - Wenjing Hao
- Department of Pediatric Dentistry, Peking University School and Hospital of Stomatology, Beijing, China
| | - Qian Zhang
- Central Laboratory, Peking University School and Hospital of Stomatology, Beijing, China
| | - Qiong Zhou
- Department of Pediatric Dentistry, Peking University School and Hospital of Stomatology, Beijing, China
| | - Weihua Shi
- Department of Pediatric Dentistry, Peking University School and Hospital of Stomatology, Beijing, China
| | - Man Qin
- Department of Pediatric Dentistry, Peking University School and Hospital of Stomatology, Beijing, China
| | - Xuesong He
- The Forsyth Institute, Cambridge, MA, United States
| | - Feng Chen
- Central Laboratory, Peking University School and Hospital of Stomatology, Beijing, China
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