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Liu J, Jaffe AL, Chen L, Bor B, Banfield JF. Host translation machinery is not a barrier to phages that interact with both CPR and non-CPR bacteria. mBio 2023; 14:e0176623. [PMID: 38009957 PMCID: PMC10746230 DOI: 10.1128/mbio.01766-23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2023] [Accepted: 10/12/2023] [Indexed: 11/29/2023] Open
Abstract
IMPORTANCE Here, we profiled putative phages of Saccharibacteria, which are of particular importance as Saccharibacteria influence some human oral diseases. We additionally profiled putative phages of Gracilibacteria and Absconditabacteria, two Candidate Phyla Radiation (CPR) lineages of interest given their use of an alternative genetic code. Among the phages identified in this study, some are targeted by spacers from both CPR and non-CPR bacteria and others by both bacteria that use the standard genetic code as well as bacteria that use an alternative genetic code. These findings represent new insights into possible phage replication strategies and have relevance for phage therapies that seek to manipulate microbiomes containing CPR bacteria.
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Affiliation(s)
- Jett Liu
- Department of Plant and Microbial Biology, University of California, Berkeley, California, USA
- Department of Microbiology, Forsyth Institute, Cambridge, Massachusetts, USA
| | - Alexander L. Jaffe
- Department of Plant and Microbial Biology, University of California, Berkeley, California, USA
- Department of Earth System Science, Stanford University, Stanford, California, USA
| | - LinXing Chen
- Innovative Genomics Institute, University of California, Berkeley, California, USA
- Department of Earth and Planetary Science, University of California, Berkeley, California, USA
| | - Batbileg Bor
- Department of Microbiology, Forsyth Institute, Cambridge, Massachusetts, USA
- Department of Oral Medicine, Infection and Immunity, Harvard School of Dental Medicine, Boston, Massachusetts, USA
| | - Jillian F. Banfield
- Innovative Genomics Institute, University of California, Berkeley, California, USA
- Department of Earth and Planetary Science, University of California, Berkeley, California, USA
- Department of Environmental Science, Policy, and Management, University of California, Berkeley, California, USA
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52
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Han N, Li X, Du J, Xu J, Guo L, Liu Y. The impacts of oral and gut microbiota on alveolar bone loss in periodontitis. J Periodontal Res 2023; 58:1139-1147. [PMID: 37712722 DOI: 10.1111/jre.13168] [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: 03/28/2023] [Revised: 06/12/2023] [Accepted: 07/20/2023] [Indexed: 09/16/2023]
Abstract
Periodontitis, a chronic infectious disease, primarily arises from infections and the invasion of periodontal pathogens. This condition is typified by alveolar bone loss resulting from host immune responses and inflammatory reactions. Periodontal pathogens trigger aberrant inflammatory reactions within periodontal tissues, thereby exacerbating the progression of periodontitis. Simultaneously, these pathogens and metabolites stimulate osteoclast differentiation, which leads to alveolar bone resorption. Moreover, a range of systemic diseases, including diabetes, postmenopausal osteoporosis, obesity and inflammatory bowel disease, can contribute to the development and progression of periodontitis. Many studies have underscored the pivotal role of gut microbiota in bone health through the gut-alveolar bone axis. The circulation may facilitate the transfer of gut pathogens or metabolites to distant alveolar bone, which in turn regulates bone homeostasis. Additionally, gut pathogens can elicit gut immune responses and direct immune cells to remote organs, potentially exacerbating periodontitis. This review summarizes the influence of oral microbiota on the development of periodontitis as well as the association between gut microbiota and periodontitis. By uncovering potential mechanisms of the gut-bone axis, this analysis provides novel insights for the targeted treatment of pathogenic bacteria in periodontitis.
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Affiliation(s)
- Nannan Han
- Laboratory of Tissue Regeneration and Immunology, Department of Periodontics, Beijing Key Laboratory of Tooth Regeneration and Function Reconstruction, School of Stomatology, Capital Medical University, Beijing, China
- Immunology Research Center for Oral and Systemic Health, Beijing Friendship Hospital, Capital Medical University, Beijing, China
| | - Xiaoyan Li
- Laboratory of Tissue Regeneration and Immunology, Department of Periodontics, Beijing Key Laboratory of Tooth Regeneration and Function Reconstruction, School of Stomatology, Capital Medical University, Beijing, China
- Immunology Research Center for Oral and Systemic Health, Beijing Friendship Hospital, Capital Medical University, Beijing, China
| | - Juan Du
- Laboratory of Tissue Regeneration and Immunology, Department of Periodontics, Beijing Key Laboratory of Tooth Regeneration and Function Reconstruction, School of Stomatology, Capital Medical University, Beijing, China
- Immunology Research Center for Oral and Systemic Health, Beijing Friendship Hospital, Capital Medical University, Beijing, China
| | - Junji Xu
- Laboratory of Tissue Regeneration and Immunology, Department of Periodontics, Beijing Key Laboratory of Tooth Regeneration and Function Reconstruction, School of Stomatology, Capital Medical University, Beijing, China
- Immunology Research Center for Oral and Systemic Health, Beijing Friendship Hospital, Capital Medical University, Beijing, China
| | - Lijia Guo
- Department of Orthodontics School of Stomatology, Capital Medical University, Beijing, China
| | - Yi Liu
- Laboratory of Tissue Regeneration and Immunology, Department of Periodontics, Beijing Key Laboratory of Tooth Regeneration and Function Reconstruction, School of Stomatology, Capital Medical University, Beijing, China
- Immunology Research Center for Oral and Systemic Health, Beijing Friendship Hospital, Capital Medical University, Beijing, China
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53
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Hernández Martínez CDJ, Felix Silva P, Salvador SL, Messora M, Palioto DB. Chronological analysis of periodontal bone loss in experimental periodontitis in mice. Clin Exp Dent Res 2023; 9:1009-1020. [PMID: 37997536 PMCID: PMC10728515 DOI: 10.1002/cre2.806] [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: 03/12/2023] [Revised: 10/04/2023] [Accepted: 10/12/2023] [Indexed: 11/25/2023] Open
Abstract
OBJECTIVES Periodontal disease is understood to be a result of dysbiotic interactions between the host and the biofilm, causing a unique reaction for each individual, which in turn characterizes their susceptibility. The objective of this study was to chronologically evaluate periodontal tissue destruction induced by systemic bacterial challenge in known susceptible (BALB/c) and resistant (C57BL/6) mouse lineages. MATERIAL AND METHODS Animals, 6-8 weeks old, were allocated into three experimental groups: Negative control (C), Gavage with sterile carboxymethyl cellulose 2%-without bacteria (Sham), and Gavage with carboxymethyl cellulose 2% + Porphyromonas gingivalis (Pg-W83). Before infection, all animals received antibiotic treatment (sulfamethoxazole/trimethoprim, 400/80 mg/5 mL) for 7 days, followed by 3 days of rest. Microbial challenge was performed 3 times per week for 1, 2, or 3 weeks. After that, the animals were kept until the completion of 42 days of experiments, when they were euthanized. The alveolar bone microarchitecture was assessed by computed microtomography. RESULTS Both C57BL/6 and BALB/c mice exhibited significant bone volume loss and lower trabecular thickness as well as greater bone porosity compared to the (C) and (Sham) groups after 1 week of microbial challenge (p < .001). When comparing only the gavage groups regarding disease implantation, time and lineage, it was possible to observe that within 1 week of induction the disease was more established in BALB/c than in C57BL/6 (p < .05). CONCLUSIONS Our results reflected that after 1 week of microbial challenge, there was evidence of alveolar bone loss for both lineages, with the loss observed in BALB/c mice being more pronounced.
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Affiliation(s)
- Cristhiam de J. Hernández Martínez
- Department of Oral & Maxillofacial Surgery and Periodontology, Ribeirão Preto Dental SchoolUniversity of Sao Paulo—USPRibeirão Preto SPBrazil
| | - Pedro Felix Silva
- Department of Oral & Maxillofacial Surgery and Periodontology, Ribeirão Preto Dental SchoolUniversity of Sao Paulo—USPRibeirão Preto SPBrazil
| | - Sergio L. Salvador
- Department of Clinical Analyses, School of Pharmaceutical Sciences of Ribeirao PretoUniversity of Sao Paulo—USPRibeirão Preto SPBrazil
| | - Michel Messora
- Department of Oral & Maxillofacial Surgery and Periodontology, Ribeirão Preto Dental SchoolUniversity of Sao Paulo—USPRibeirão Preto SPBrazil
| | - Daniela B. Palioto
- Department of Oral & Maxillofacial Surgery and Periodontology, Ribeirão Preto Dental SchoolUniversity of Sao Paulo—USPRibeirão Preto SPBrazil
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54
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Kondo T, Gleason A, Okawa H, Hokugo A, Nishimura I. Mouse gingival single-cell transcriptomic atlas identified a novel fibroblast subpopulation activated to guide oral barrier immunity in periodontitis. eLife 2023; 12:RP88183. [PMID: 38015204 PMCID: PMC10684155 DOI: 10.7554/elife.88183] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2023] Open
Abstract
Periodontitis, one of the most common non-communicable diseases, is characterized by chronic oral inflammation and uncontrolled tooth supporting alveolar bone resorption. Its underlying mechanism to initiate aberrant oral barrier immunity has yet to be delineated. Here, we report a unique fibroblast subpopulation activated to guide oral inflammation (AG fibroblasts) identified in a single-cell RNA sequencing gingival cell atlas constructed from the mouse periodontitis models. AG fibroblasts localized beneath the gingival epithelium and in the cervical periodontal ligament responded to the ligature placement and to the discrete topical application of Toll-like receptor stimulants to mouse maxillary tissue. The upregulated chemokines and ligands of AG fibroblasts linked to the putative receptors of neutrophils in the early stages of periodontitis. In the established chronic inflammation, neutrophils, together with AG fibroblasts, appeared to induce type 3 innate lymphoid cells (ILC3s) that were the primary source of interleukin-17 cytokines. The comparative analysis of Rag2-/- and Rag2-/-Il2rg-/- mice suggested that ILC3 contributed to the cervical alveolar bone resorption interfacing the gingival inflammation. We propose the AG fibroblast-neutrophil-ILC3 axis as a previously unrecognized mechanism which could be involved in the complex interplay between oral barrier immune cells contributing to pathological inflammation in periodontitis.
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Affiliation(s)
- Takeru Kondo
- Weintraub Center for Reconstructive Biotechnology, UCLA School of DentistryLos AngelesUnited States
- Division of Molecular and Regenerative Prosthodontics, Tohoku University Graduate School of DentistrySendaiJapan
| | - Annie Gleason
- Weintraub Center for Reconstructive Biotechnology, UCLA School of DentistryLos AngelesUnited States
- UCLA Bruin in Genomics Summer ProgramLos AngelesUnited States
| | - Hiroko Okawa
- Weintraub Center for Reconstructive Biotechnology, UCLA School of DentistryLos AngelesUnited States
- Division of Molecular and Regenerative Prosthodontics, Tohoku University Graduate School of DentistrySendaiJapan
| | - Akishige Hokugo
- Weintraub Center for Reconstructive Biotechnology, UCLA School of DentistryLos AngelesUnited States
- Regenerative Bioengineering and Repair Laboratory, Division of Plastic and Reconstructive Surgery, Department of Surgery, David Geffen School of Medicine at UCLALos AngelesUnited States
| | - Ichiro Nishimura
- Weintraub Center for Reconstructive Biotechnology, UCLA School of DentistryLos AngelesUnited States
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Alyousef YM, Piotrowski S, Alonaizan FA, Alsulaiman A, Alali AA, Almasood NN, Vatte C, Hamilton L, Gandla D, Lad H, Robinson FL, Cyrus C, Meng RC, Dowdell A, Piening B, Keating BJ, Al-Ali AK. Oral microbiota analyses of paediatric Saudi population reveals signatures of dental caries. BMC Oral Health 2023; 23:935. [PMID: 38012587 PMCID: PMC10683298 DOI: 10.1186/s12903-023-03448-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2022] [Accepted: 09/24/2023] [Indexed: 11/29/2023] Open
Abstract
BACKGROUND Oral microbiome sequencing has revealed key links between microbiome dysfunction and dental caries. However, these efforts have largely focused on Western populations, with few studies on the Middle Eastern communities. The current study aimed to identify the composition and abundance of the oral microbiota in saliva samples of children with different caries levels using machine learning approaches. METHODS Oral microbiota composition and abundance were identified in 250 Saudi participants with high dental caries and 150 with low dental caries using 16 S rRNA sequencing on a NextSeq 2000 SP flow cell (Illumina, CA) using 250 bp paired-end reads, and attempted to build a classifier using random forest models to assist in the early detection of caries. RESULTS The ADONIS test results indicate that there was no significant association between sex and Bray-Curtis dissimilarity (p ~ 0.93), but there was a significant association with dental caries status (p ~ 0.001). Using an alpha level of 0.05, five differentially abundant operational taxonomic units (OTUs) were identified between males and females as the main effect along with four differentially abundant OTUs between high and low dental caries. The mean metrics for the optimal hyperparameter combination using the model with only differentially abundant OTUs were: Accuracy (0.701); Matthew's correlation coefficient (0.0509); AUC (0.517) and F1 score (0.821) while the mean metrics for random forest model using all OTUs were:0.675; 0.054; 0.611 and 0.796 respectively. CONCLUSION The assessment of oral microbiota samples in a representative Saudi Arabian population for high and low metrics of dental caries yields signatures of abundances and diversity.
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Affiliation(s)
- Yousef M Alyousef
- Department of Preventive Dental Sciences, College of Dentistry, Imam Abdulrahman bin Faisal University, Dammam, Saudi Arabia
| | - Stanley Piotrowski
- Earle A Chiles Research Institute, Providence Cancer Institute, Portland, OR, USA
| | - Faisal A Alonaizan
- Department of Preventive Dental Sciences, College of Dentistry, Imam Abdulrahman bin Faisal University, Dammam, Saudi Arabia
| | - Ahmed Alsulaiman
- Department of Preventive Dental Sciences, College of Dentistry, Imam Abdulrahman bin Faisal University, Dammam, Saudi Arabia
| | - Ali A Alali
- Department of Preventive Dental Sciences, College of Dentistry, Imam Abdulrahman bin Faisal University, Dammam, Saudi Arabia
| | - Naif N Almasood
- Department of Preventive Dental Sciences, College of Dentistry, Imam Abdulrahman bin Faisal University, Dammam, Saudi Arabia
| | - Chittibabu Vatte
- Department of Clinical Biochemistry, College of Medicine, Imam Abdulrahman bin Faisal University, Cornish Road, Rakah, Dammam, 31441, Saudi Arabia
| | - Lauren Hamilton
- Earle A Chiles Research Institute, Providence Cancer Institute, Portland, OR, USA
| | - Divya Gandla
- Department of Surgery, Perelman School of Medicine, University of Pennsylvania, Pennsylvania, PA, 19104, USA
| | - Hetal Lad
- Department of Surgery, Perelman School of Medicine, University of Pennsylvania, Pennsylvania, PA, 19104, USA
| | - Fred L Robinson
- Earle A Chiles Research Institute, Providence Cancer Institute, Portland, OR, USA
| | - Cyril Cyrus
- Department of Clinical Biochemistry, College of Medicine, Imam Abdulrahman bin Faisal University, Cornish Road, Rakah, Dammam, 31441, Saudi Arabia
| | - Ryan C Meng
- Earle A Chiles Research Institute, Providence Cancer Institute, Portland, OR, USA
| | - Alexa Dowdell
- Earle A Chiles Research Institute, Providence Cancer Institute, Portland, OR, USA
| | - Brian Piening
- Earle A Chiles Research Institute, Providence Cancer Institute, Portland, OR, USA
| | - Brendan J Keating
- Department of Surgery, Perelman School of Medicine, University of Pennsylvania, Pennsylvania, PA, 19104, USA
| | - Amein K Al-Ali
- Department of Clinical Biochemistry, College of Medicine, Imam Abdulrahman bin Faisal University, Cornish Road, Rakah, Dammam, 31441, Saudi Arabia.
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56
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Dyrhovden R, Eagan TM, Fløtten Ø, Siljan W, Leegaard TM, Bø B, Fardal H, Grøvan F, Kildahl-Andersen A, Larssen KW, Tilseth R, Hjetland R, Løes S, Lindemark F, Tellevik M, Breistein R, Kommedal Ø. Pleural Empyema Caused by Streptococcus intermedius and Fusobacterium nucleatum: A Distinct Entity of Pleural Infections. Clin Infect Dis 2023; 77:1361-1371. [PMID: 37348872 PMCID: PMC10654859 DOI: 10.1093/cid/ciad378] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2023] [Accepted: 06/20/2023] [Indexed: 06/24/2023] Open
Abstract
BACKGROUND Many community-acquired pleural infections are caused by facultative and anaerobic bacteria from the human oral microbiota. The epidemiology, clinical characteristics, pathogenesis, and etiology of such infections are little studied. The aim of the present prospective multicenter cohort study was to provide a thorough microbiological and clinical characterization of such oral-type pleural infections and to improve our understanding of the underlying etiology and associated risk factors. METHODS Over a 2-year period, we included 77 patients with community-acquired pleural infection, whereof 63 (82%) represented oral-type pleural infections. Clinical and anamnestic data were systematically collected, and patients were offered a dental assessment by an oral surgeon. Microbial characterizations were done using next-generation sequencing. Obtained bacterial profiles were compared with microbiology data from previous investigations on odontogenic infections, bacteremia after extraction of infected teeth, and community-acquired brain abscesses. RESULTS From the oral-type pleural infections, we made 267 bacterial identifications representing 89 different species. Streptococcus intermedius and/or Fusobacterium nucleatum were identified as a dominant component in all infections. We found a high prevalence of dental infections among patients with oral-type pleural infection and demonstrate substantial similarities between the microbiology of such pleural infections and that of odontogenic infections, odontogenic bacteremia, and community-acquired brain abscesses. CONCLUSIONS Oral-type pleural infection is the most common type of community-acquired pleural infection. Current evidence supports hematogenous seeding of bacteria from a dental focus as the most important underlying etiology. Streptococcus intermedius and Fusobacterium nucleatum most likely represent key pathogens necessary for establishing the infection.
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Affiliation(s)
- Ruben Dyrhovden
- Department of Microbiology, Haukeland University Hospital, Bergen, Norway
| | - Tomas Mikal Eagan
- Department of Clinical Science, University of Bergen, Bergen, Norway
- Department of Thoracic Medicine, Haukeland University Hospital, Bergen, Norway
| | - Øystein Fløtten
- Department of Clinical Science, University of Bergen, Bergen, Norway
- Department of Thoracic Medicine, Haukeland University Hospital, Bergen, Norway
| | - William Siljan
- Department of Pulmonary Medicine, Akershus University Hospital, Lørenskog, Norway
| | - Truls Michael Leegaard
- Division of Medicine and Laboratory Sciences, Faculty of Medicine, Institute of Clinical Medicine, University of Oslo, Oslo, Norway
- Department of Microbiology and Infection Control, Akershus University Hospital, Akershus, Norway
| | - Bjørnar Bø
- Department of Pulmonary Medicine, Stavanger University Hospital, Stavanger, Norway
| | - Hilde Fardal
- Department of Microbiology, Stavanger University Hospital, Stavanger, Norway
| | - Fredrik Grøvan
- Department of Medicine, Haraldsplass Deaconess Hospital, Bergen, Norway
| | - Arne Kildahl-Andersen
- Department of Thoracic Medicine, St Olavs Hospital, Trondheim University Hospital, Trondheim, Norway
| | - Kjersti Wik Larssen
- Department of Medical Microbiology, St Olavs Hospital, Trondheim University Hospital, Trondheim, Norway
| | - Rune Tilseth
- Department of Medicine, Førde Central Hospital, Førde, Norway
| | - Reidar Hjetland
- Department of Microbiology, Førde Central Hospital, Førde, Norway
| | - Sigbjørn Løes
- Department of Maxillofacial Surgery, Haukeland University Hospital, Bergen, Norway
- Faculty of Health Sciences, UiT The Arctic University of Norway, Tromsø, Norway
| | - Frode Lindemark
- Department of Thoracic Medicine, Haukeland University Hospital, Bergen, Norway
| | - Marit Tellevik
- Department of Microbiology, Haukeland University Hospital, Bergen, Norway
| | - Rebecca Breistein
- Department of Microbiology, Haukeland University Hospital, Bergen, Norway
| | - Øyvind Kommedal
- Department of Microbiology, Haukeland University Hospital, Bergen, Norway
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Balan P, Belibasakis G, Ivanovski S, Bostanci N, Seneviratne CJ. Community dynamics of subgingival microbiome in periodontitis and targets for microbiome modulation therapy. Crit Rev Microbiol 2023; 49:726-738. [PMID: 36260510 DOI: 10.1080/1040841x.2022.2133594] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2022] [Revised: 09/24/2022] [Accepted: 09/29/2022] [Indexed: 11/03/2022]
Abstract
The microbial aetiology for periodontitis has been widely studied and deciphered for more than a century. The evolving and changing concepts about periodontal microbiology can be attributed to continuously developing laboratory techniques. The current sequencing platforms have not only expanded the catalog of periodontal pathogens but have also facilitated the understanding of functional interactions of the ecological framework. However, the translation of this new knowledge to advance periodontal therapeutics is minimal. We contend that novel clinical interventions directed beyond conventional therapies need to be emphasized. A clear understanding of the structural and functional dynamics of subgingival microbiota is a pre-requisite for developing any microbiome-based interventions for applications in periodontal health care. In this review, we discuss the 16 s-rRNA gene sequencing-based knowledge of the subgingival microbial community structure, its interactions and functions, and our perspective on the potential to engineer it for periodontal therapeutics. Harnessing this next-generation sequencing-based knowledge, microbiome modulation therapies are poised to change microbiome therapeutics' face.
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Affiliation(s)
- Preethi Balan
- Singapore Oral Microbiomics Initiative, National Dental Research Institute Singapore, National Dental Center, Singapore, Singapore
- Oral Health Academic Clinical Program, Duke NUS Medical School, Singapore, Singapore
| | | | - Saso Ivanovski
- School of Dentistry, University of Queensland, Queensland, Australia
| | - Nagihan Bostanci
- Department of Dental Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Chaminda Jayampath Seneviratne
- Singapore Oral Microbiomics Initiative, National Dental Research Institute Singapore, National Dental Center, Singapore, Singapore
- Oral Health Academic Clinical Program, Duke NUS Medical School, Singapore, Singapore
- School of Dentistry, University of Queensland, Queensland, Australia
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Pacheco-Yanes J, Reynolds E, Li J, Mariño E. Microbiome-targeted interventions for the control of oral-gut dysbiosis and chronic systemic inflammation. Trends Mol Med 2023; 29:912-925. [PMID: 37730461 DOI: 10.1016/j.molmed.2023.08.006] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2023] [Revised: 08/14/2023] [Accepted: 08/16/2023] [Indexed: 09/22/2023]
Abstract
Recent research has confirmed the strong connection between imbalances in the oral and gut microbiome (oral-gut dysbiosis), periodontitis, and inflammatory conditions such as diabetes, Alzheimer's disease, and cardiovascular diseases. Microbiome modulation is crucial for preventing and treating several autoimmune and inflammatory diseases, including periodontitis. However, the causal relationships between the microbiome and its derived metabolites that mediate periodontitis and chronic inflammation constitute a notable knowledge gap. Here we review the mechanisms involved in the microbiome-host crosstalk, and describe novel precision medicine for the control of systemic inflammation. As microbiome-targeted therapies begin to enter clinical trials, the success of these approaches relies upon understanding these reciprocal microbiome-host interactions, and it may provide new therapeutic avenues to reduce the risk of periodontitis-associated diseases.
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Affiliation(s)
- Juan Pacheco-Yanes
- Department of Biochemistry and Molecular Biology, Monash Biomedicine Discovery Institute, Monash University, Clayton, Victoria, Australia
| | - Eric Reynolds
- Oral Health Collaborative Research Centre, Melbourne Dental School, Bio21 Institute, The University of Melbourne, Victoria, Australia
| | - Jian Li
- Department of Microbiology, Monash Biomedicine Discovery Institute, Monash University, Clayton, Victoria, Australia
| | - Eliana Mariño
- Department of Biochemistry and Molecular Biology, Monash Biomedicine Discovery Institute, Monash University, Clayton, Victoria, Australia; ImmunoBiota Therapeutics Pty Ltd, Melbourne, Australia.
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Zhou Y, Liu J, Xue P, Zhang J. Collagenase-Responsive Hydrogel Loaded with GSK2606414 Nanoparticles for Periodontitis Treatment through Inhibiting Inflammation-Induced Expression of PERK of Periodontal Ligament Stem Cells. Pharmaceutics 2023; 15:2503. [PMID: 37896262 PMCID: PMC10609791 DOI: 10.3390/pharmaceutics15102503] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2023] [Revised: 10/14/2023] [Accepted: 10/15/2023] [Indexed: 10/29/2023] Open
Abstract
GSK2606414 is a new, effective, highly selective PERK inhibitor with adenosine-triphosphate-competitive characteristics. It can inhibit endoplasmic reticulum stress and has the possibility of treating periodontitis. However, owing to its strong hydrophobicity and side effects, highly efficient pharmaceutical formulations are urgently needed to improve the bioavailability and therapeutic efficacy of GSK2606414 in the treatment of periodontitis. Herein, a novel local GSK2606414 delivery system was developed by synthesizing GSK2606414 nanoparticles (NanoGSK) and further loading NanoGSK into a collagenase-responsive hydrogel. The drug release results showed that the drug-loaded hydrogels had outstanding enzymatic responsive drug release profiles under the local microenvironment of periodontitis. Furthermore, in vitro studies showed that the drug-loaded hydrogel exhibited good cellular uptake and did not affect the growth and proliferation of normal cells, while the drug-loaded hydrogel significantly improved the osteogenic differentiation of inflammatory cells. In the evaluations of periodontal tissue repair, the drug-loaded hydrogels showed a great effect on inflammation inhibition, as well as alveolar bone regeneration. Therefore, this work introduces a promising strategy for the clinical treatment of periodontitis.
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Affiliation(s)
- Yuchen Zhou
- College of Chemical Engineering, Beijing University of Chemical Technology, Beijing 100029, China
| | - Jie Liu
- College of Chemical Engineering, Beijing University of Chemical Technology, Beijing 100029, China
| | - Peng Xue
- Institute of Stomatology, The First Medical Center, Chinese PLA General Hospital, Beijing 100853, China
| | - Jianjun Zhang
- College of Chemical Engineering, Beijing University of Chemical Technology, Beijing 100029, China
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Li X, Yu C, Zhang B, Shan X, Mao W, Zhang Z, Wang C, Jin X, Wang J, Zhao H. The recovery of the microbial community after plaque removal depends on periodontal health status. NPJ Biofilms Microbiomes 2023; 9:75. [PMID: 37805507 PMCID: PMC10560279 DOI: 10.1038/s41522-023-00441-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2023] [Accepted: 09/25/2023] [Indexed: 10/09/2023] Open
Abstract
Plaque accumulation and microbial community changes are important causes of periodontal disease. Cleaned plaque microorganisms will reattach to form biofilms, but the recovery and outcome of plaque microbial communities in different periodontal health states remain unknown. In this study, we tracked the biofilm remodeling process in 206 dental plaque samples from 40 healthy periodontal, gingivitis and periodontitis volunteers at 6 time points before and after supragingival scaling. We found that microbial communities of different periodontal states changed asynchronously during the process, and the more severe the periodontal disease condition, the more lagged the recovery of plaque microorganisms to their original state after cleaning; this reflected a higher degree of plaque development in periodontitis samples. The plaque index and bleeding index were significantly correlated with plaque recovery, especially the recovery of bacteria such as Abiotrophia and Capnocytophaga. Meanwhile, we found that the microbial community structure of different periodontal health states was most similar at the Day 3 after plaque cleaning, and the communities gradually differentiated and developed in different directions. Abiotrophia and other bacteria might play an important role in determining the development trend of plaque biofilms. The discovery of specific time points and bacteria was of great value in clarifying the pathogenesis of periodontal disease and in seeking targets for prevention and treatment.
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Affiliation(s)
- Xiaoqing Li
- The Third Clinical Institute Affiliated to Wenzhou Medical University/Wenzhou People's Hospital/Wenzhou Maternal and Child Health Care Hospital/The Third Affiliated Hospital of Shanghai University, Wenzhou, Zhejiang, China
| | - Cheng Yu
- The Third Clinical Institute Affiliated to Wenzhou Medical University/Wenzhou People's Hospital/Wenzhou Maternal and Child Health Care Hospital/The Third Affiliated Hospital of Shanghai University, Wenzhou, Zhejiang, China
- Jiangyin Stomatological Hospital/Jiangyin Oral Disease Preventive Treatment, Jiangyin, Jiangsu, China
| | - Bing Zhang
- University of Chinese Academy of Sciences, Beijing, China
- Beijing Institutes of Life Science, Chinese Academy of Sciences, Beijing, China
| | - Xiaogang Shan
- The Third Clinical Institute Affiliated to Wenzhou Medical University/Wenzhou People's Hospital/Wenzhou Maternal and Child Health Care Hospital/The Third Affiliated Hospital of Shanghai University, Wenzhou, Zhejiang, China
| | - Wenjun Mao
- The Third Clinical Institute Affiliated to Wenzhou Medical University/Wenzhou People's Hospital/Wenzhou Maternal and Child Health Care Hospital/The Third Affiliated Hospital of Shanghai University, Wenzhou, Zhejiang, China
| | - Zicheng Zhang
- School of Biomedical Engineering, Hainan University, Haikou, Hainan, China
| | - Chunyan Wang
- Henan Key Laboratory of Industrial Microbial Resources and Fermentation Technology, Nanyang Institute of Technology, Nanyang, Henan, China
| | - Xiaoxia Jin
- The Third Clinical Institute Affiliated to Wenzhou Medical University/Wenzhou People's Hospital/Wenzhou Maternal and Child Health Care Hospital/The Third Affiliated Hospital of Shanghai University, Wenzhou, Zhejiang, China
| | - Jinfeng Wang
- College of Food Science & Nutritional Engineering, China Agricultural University, Beijing, China.
| | - Hui Zhao
- The Third Clinical Institute Affiliated to Wenzhou Medical University/Wenzhou People's Hospital/Wenzhou Maternal and Child Health Care Hospital/The Third Affiliated Hospital of Shanghai University, Wenzhou, Zhejiang, China.
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Handsley-Davis M, Anderson MZ, Bader AC, Ehau-Taumaunu H, Fox K, Kowal E, Weyrich LS. Microbiome ownership for Indigenous peoples. Nat Microbiol 2023; 8:1777-1786. [PMID: 37770744 DOI: 10.1038/s41564-023-01470-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2022] [Accepted: 08/11/2023] [Indexed: 09/30/2023]
Abstract
Several studies have reported increased microbial diversity, or distinct microbial community compositions, in the microbiomes of Indigenous peoples around the world. However, there is a widespread failure to include Indigenous cultures and perspectives in microbiome research programmes, and ethical issues pertaining to microbiome research involving Indigenous participants have not received enough attention. We discuss the benefits and risks arising from microbiome research involving Indigenous peoples and analyse microbiome ownership as an ethical concept in this context. We argue that microbiome ownership represents an opportunity for Indigenous peoples to steward and protect their resident microbial communities at every stage of research.
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Affiliation(s)
- Matilda Handsley-Davis
- School of Biological Sciences, University of Adelaide, Adelaide, South Australia, Australia
- ARC Centre of Excellence for Australian Biodiversity and Heritage, University of Wollongong, Wollongong, New South Wales, Australia
| | - Matthew Z Anderson
- Department of Microbiology, The Ohio State University, Columbus, OH, USA
- Department of Microbial Infection and Immunity, The Ohio State University, Columbus, OH, USA
- Center for Genomic Science Innovation, University of Wisconsin-Madison, Madison, WI, USA
- Laboratory of Genetics, University of Wisconsin-Madison, Madison, WI, USA
| | - Alyssa C Bader
- Department of Anthropology, McGill University, Montreal, Quebec, Canada
| | - Hanareia Ehau-Taumaunu
- Department of Plant Pathology and Environmental Microbiology, The Pennsylvania State University, State College, PA, USA
| | - Keolu Fox
- Department of Anthropology, Global Health Program, and Indigenous Futures Institute, University of California, San Diego, CA, USA
| | - Emma Kowal
- ARC Centre of Excellence for Australian Biodiversity and Heritage, University of Wollongong, Wollongong, New South Wales, Australia
- Alfred Deakin Institute for Citizenship and Globalisation, Deakin University, Melbourne, Victoria, Australia
| | - Laura S Weyrich
- School of Biological Sciences, University of Adelaide, Adelaide, South Australia, Australia.
- ARC Centre of Excellence for Australian Biodiversity and Heritage, University of Wollongong, Wollongong, New South Wales, Australia.
- Department of Anthropology and Huck Institutes of Life Sciences, The Pennsylvania State University, State College, PA, USA.
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Regueira-Iglesias A, Balsa-Castro C, Blanco-Pintos T, Tomás I. Critical review of 16S rRNA gene sequencing workflow in microbiome studies: From primer selection to advanced data analysis. Mol Oral Microbiol 2023; 38:347-399. [PMID: 37804481 DOI: 10.1111/omi.12434] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2023] [Revised: 09/01/2023] [Accepted: 09/14/2023] [Indexed: 10/09/2023]
Abstract
The multi-batch reanalysis approach of jointly reevaluating gene/genome sequences from different works has gained particular relevance in the literature in recent years. The large amount of 16S ribosomal ribonucleic acid (rRNA) gene sequence data stored in public repositories and information in taxonomic databases of the same gene far exceeds that related to complete genomes. This review is intended to guide researchers new to studying microbiota, particularly the oral microbiota, using 16S rRNA gene sequencing and those who want to expand and update their knowledge to optimise their decision-making and improve their research results. First, we describe the advantages and disadvantages of using the 16S rRNA gene as a phylogenetic marker and the latest findings on the impact of primer pair selection on diversity and taxonomic assignment outcomes in oral microbiome studies. Strategies for primer selection based on these results are introduced. Second, we identified the key factors to consider in selecting the sequencing technology and platform. The process and particularities of the main steps for processing 16S rRNA gene-derived data are described in detail to enable researchers to choose the most appropriate bioinformatics pipeline and analysis methods based on the available evidence. We then produce an overview of the different types of advanced analyses, both the most widely used in the literature and the most recent approaches. Several indices, metrics and software for studying microbial communities are included, highlighting their advantages and disadvantages. Considering the principles of clinical metagenomics, we conclude that future research should focus on rigorous analytical approaches, such as developing predictive models to identify microbiome-based biomarkers to classify health and disease states. Finally, we address the batch effect concept and the microbiome-specific methods for accounting for or correcting them.
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Affiliation(s)
- Alba Regueira-Iglesias
- Oral Sciences Research Group, Special Needs Unit, Department of Surgery and Medical-Surgical Specialties, School of Medicine and Dentistry, Universidade de Santiago de Compostela, Health Research Institute of Santiago de Compostela (IDIS), Santiago de Compostela, A Coruña, Spain
| | - Carlos Balsa-Castro
- Oral Sciences Research Group, Special Needs Unit, Department of Surgery and Medical-Surgical Specialties, School of Medicine and Dentistry, Universidade de Santiago de Compostela, Health Research Institute of Santiago de Compostela (IDIS), Santiago de Compostela, A Coruña, Spain
| | - Triana Blanco-Pintos
- Oral Sciences Research Group, Special Needs Unit, Department of Surgery and Medical-Surgical Specialties, School of Medicine and Dentistry, Universidade de Santiago de Compostela, Health Research Institute of Santiago de Compostela (IDIS), Santiago de Compostela, A Coruña, Spain
| | - Inmaculada Tomás
- Oral Sciences Research Group, Special Needs Unit, Department of Surgery and Medical-Surgical Specialties, School of Medicine and Dentistry, Universidade de Santiago de Compostela, Health Research Institute of Santiago de Compostela (IDIS), Santiago de Compostela, A Coruña, Spain
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63
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Castillo Y, Delgadillo NA, Neuta Y, Iniesta M, Sanz M, Herrera D, Pianeta R, Lafaurie GI, Castillo DM. Design and validation of a quantitative polymerase chain reaction test for the identification and quantification of uncultivable bacteria associated with periodontitis. Arch Oral Biol 2023; 154:105758. [PMID: 37419062 DOI: 10.1016/j.archoralbio.2023.105758] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2023] [Revised: 06/11/2023] [Accepted: 07/02/2023] [Indexed: 07/09/2023]
Abstract
OBJECTIVE This study aimed to standardize a quantitative polymerase chain reaction (qPCR)-based test to identify and quantify the uncultivable bacteria associated with periodontitis. METHODS The standardization of qPCR, the curves for the quantification of Eubacterium saphenum, Eubacterium brachy, Desulfobulbus oralis, and Filifactor alocis were developed by cloning the 16 S rRNA target gene fragment, using the GEMTEasy vector. The qPCRs were validated in 55 subgingival biofilm clinical samples, from different stages of periodontitis and from periodontally healthy/gingivitis individuals, which were previously evaluated by next-generation sequencing (NGS). The results obtained by the two methods were compared by the concordance of Cohen's Kappa index, and sensitivity, specificity, receiver operating characteristic (ROC) curve, and predictive values were established. RESULTS obtained by the two methods were compared using the concordance of Cohen's Kappa index, and sensitivity, specificity, predictive values, and ROC curves were generated. The qPCR test was standardized with efficiencies between 90% and 100% and R2: 0.997-0.999. Concordance between the qPCR and NSG was moderate to F. alocis (agreement 78.2%; kappa 0.56, p < 0.05) and fair to the other microorganisms (agreement 67.27%-72.73; kappa 0.37-0.38, p < 0.05). qPCR exhibited a high sensitivity (82.2-100%) and specificity (100%) for E. brachy, E. saphenum, and F. alocis. Sensitivity was lower to D. oralis. Conversely, qPCR demonstrated higher sensitivity to E. saphenum than NSG (100 vs. 68.1). CONCLUSIONS The uncultivable microorganisms associated with periodontitis, D. oralis, E. brachy, E. saphenum, and F. alocis can be detected and quantified with the newly developed and validates qPCR test.
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Affiliation(s)
- Yormaris Castillo
- Universidad El Bosque, Vicerrectoría de investigaciones, Facultad de Odontología, Unidad de Investigación Básica Oral-UIBO, Bogotá, Colombia
| | - Nathaly Andrea Delgadillo
- Universidad El Bosque, Vicerrectoría de investigaciones, Facultad de Odontología, Unidad de Investigación Básica Oral-UIBO, Bogotá, Colombia
| | - Yineth Neuta
- Universidad El Bosque, Vicerrectoría de investigaciones, Facultad de Odontología, Unidad de Investigación Básica Oral-UIBO, Bogotá, Colombia
| | - Margarita Iniesta
- Complutense University of Madrid, ETEP (Etiology and Therapy of Periodontal and Peri-Implant Diseases) Research Group, School of Dentistry, Madrid, Spain
| | - Mariano Sanz
- Complutense University of Madrid, ETEP (Etiology and Therapy of Periodontal and Peri-Implant Diseases) Research Group, School of Dentistry, Madrid, Spain
| | - David Herrera
- Complutense University of Madrid, ETEP (Etiology and Therapy of Periodontal and Peri-Implant Diseases) Research Group, School of Dentistry, Madrid, Spain
| | - Roquelina Pianeta
- Complutense University of Madrid, ETEP (Etiology and Therapy of Periodontal and Peri-Implant Diseases) Research Group, School of Dentistry, Madrid, Spain; Corporación Universitaria Rafael Núñez, School of Dentistry, Cartagena, Colombia
| | - Gloria Inés Lafaurie
- Universidad El Bosque, Vicerrectoría de investigaciones, Facultad de Odontología, Unidad de Investigación Básica Oral-UIBO, Bogotá, Colombia
| | - Diana Marcela Castillo
- Universidad El Bosque, Vicerrectoría de investigaciones, Facultad de Odontología, Unidad de Investigación Básica Oral-UIBO, Bogotá, Colombia.
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Xu H, Qian Y, Jia S, Shi Z, Zhong Q. Comparative analysis of subgingival microbiota in patients with mild, moderate, and severe chronic periodontitis. Oral Dis 2023; 29:2865-2877. [PMID: 36076344 DOI: 10.1111/odi.14373] [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: 10/16/2021] [Revised: 06/07/2022] [Accepted: 09/01/2022] [Indexed: 11/30/2022]
Abstract
In this study, we explored the suspected pathogens of chronic periodontitis at different stages of occurrence and development. We collected 100 gingival crevicular fluid samples, 27, 27, and 26 from patients with mild, moderate, and severe chronic periodontitis, respectively, and 20 from healthy individuals. Pathogens were detected using a 16S rRNA metagenomic approach. Quantitative Insights in Microbial Ecology, Mothur, and other software were used to analyze the original data, draw relative abundance histograms and heat maps, and calculate flora abundance and diversity indexes. We identified 429 operational taxonomic units, covering 13 phyla, 20 classes, 32 orders, 66 families, and 123 genera from the four groups of samples. Each group showed microbial diversity, and the number of new species of bacterial flora in the gingival crevicular fluid samples gradually increased from the healthy to the severe chronic periodontitis group. There was a significant difference in the relative abundance of the core flora at the phylum, class, order, family, and genus classification levels. Our data indicated a certain correlation between the changes in the subgingival microbial structure and the occurrence and development of chronic periodontitis, which might be able to provide a reference for the diagnosis, treatment and prevention of chronic periodontitis.
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Affiliation(s)
- Hongzhen Xu
- Department of Prosthodontics, Shanghai Stomatological Hospital, Fudan University, Shanghai, China
| | - Yumei Qian
- Department of Prosthodontics, Shanghai Stomatological Hospital, Fudan University, Shanghai, China
| | - Shuang Jia
- Department of Prosthodontics, Shanghai Stomatological Hospital, Fudan University, Shanghai, China
| | - Zhaocheng Shi
- Department of Periodontology, Shanghai Stomatological Hospital, Fudan University, Shanghai, China
| | - Qun Zhong
- Department of Prosthodontics, Shanghai Stomatological Hospital, Fudan University, Shanghai, China
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Antezack A, Etchecopar-Etchart D, La Scola B, Monnet-Corti V. New putative periodontopathogens and periodontal health-associated species: A systematic review and meta-analysis. J Periodontal Res 2023; 58:893-906. [PMID: 37572051 DOI: 10.1111/jre.13173] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2023] [Revised: 07/14/2023] [Accepted: 08/01/2023] [Indexed: 08/14/2023]
Abstract
To investigate the existence of any association between new putative periodontal pathogens and periodontitis. Two independent reviewers conducted electronic literature searches in the MEDLINE (PubMed), EMBASE, DOSS and Google Scholar databases as well as a manual search to identify eligible clinical studies prior to November 2022. Studies comparing the prevalence of microorganisms other than the already-known periodontal pathogens in subgingival plaque and/or saliva samples between subjects with periodontitis and subject with periodontal health were included. Meta-analyses were performed on data provided by the included studies. Fifty studies including a total of 2739 periodontitis subjects and 1747 subjects with periodontal health were included. The Archaea domain and 25 bacterial species (Anaeroglobus geminatus, Bacteroidales [G-2] bacterium HMT 274, Desulfobulbus sp. HMT 041, Dialister invisus, Dialister pneumosintes, Eubacterium brachy, Enterococcus faecalis, Eubacterium nodatum, Eubacterium saphenum, Filifactor alocis, Fretibacterium sp. HMT 360, Fretibacterium sp. HMT 362, Mogibacterium timidum, Peptoniphilaceae sp. HMT 113, Peptostreptococcus stomatis, Porphyromonas endodontalis, Slackia exigua, Streptococcus gordonii, Selenomonas sputigena, Treponema amylovorum, Treponema lecithinolyticum, Treponema maltophilum, Treponema medium, Treponema parvum and Treponema socranskii) were found to be statistically significantly associated with periodontitis. Network studies should be conducted to investigate the role of these newly identified periodontitis-associated microorganisms through interspecies interaction and host-microbe crosstalk analyses.
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Affiliation(s)
- Angéline Antezack
- Faculté des Sciences Médicales et Paramédicales, Ecole de Médecine Dentaire, Aix-Marseille Univ, Marseille, France
- AP-HM, Hôpital Timone, Pôle Odontologie, Service de Parodontologie, Marseille, France
- MEPHI, IRD, AP-HM, IHU Méditerranée Infection, Aix Marseille Univ, Marseille, France
| | - Damien Etchecopar-Etchart
- EA 3279: CEREeSS-Health Service Research and Quality of Life Center, Aix-Marseille Univ, Marseille, France
- Département de Psychiatrie, Assistance Publique-Hôpitaux de Marseille (AP-HM), Marseille, France
- FondaMental Foundation, Creteil, France
| | - Bernard La Scola
- MEPHI, IRD, AP-HM, IHU Méditerranée Infection, Aix Marseille Univ, Marseille, France
| | - Virginie Monnet-Corti
- Faculté des Sciences Médicales et Paramédicales, Ecole de Médecine Dentaire, Aix-Marseille Univ, Marseille, France
- AP-HM, Hôpital Timone, Pôle Odontologie, Service de Parodontologie, Marseille, France
- MEPHI, IRD, AP-HM, IHU Méditerranée Infection, Aix Marseille Univ, Marseille, France
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Zhou P, G C B, Stolte F, Wu C. Use of CRISPR interference for efficient and rapid gene inactivation in Fusobacterium nucleatum. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.09.19.558491. [PMID: 37781593 PMCID: PMC10541141 DOI: 10.1101/2023.09.19.558491] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/03/2023]
Abstract
Gene inactivation via creating in-frame deletion mutations in Fusobacterium nucleatum is time-consuming, and most fusobacterial strains are genetically intractable. Addressing these problems, we introduced a riboswitch-based inducible CRISPRi system. This system employs the nuclease-inactive Streptococcus pyogenes Cas9 protein (dCas9), specifically guided to the gene of interest by a constantly expressed single guide RNA (sgRNA). Mechanistically, this dCas9-sgRNA complex serves as an insurmountable roadblock for RNA polymerase, thus repressing the target gene transcription. Leveraging this system, we first examined two non-essential genes, ftsX, and radD , pivotal for fusobacterial cytokinesis and coaggregation. Upon adding the inducer, theophylline, ftsX suppression caused filamentous cell formation akin to chromosomal ftsX deletion, while targeting radD significantly reduced RadD protein levels, abolishing coaggregation. The system was then extended to probe essential genes bamA and ftsZ , vital for outer membrane biogenesis and cell division. Impressively, bamA suppression disrupted membrane integrity and bacterial separation, stalling growth, while ftsZ- targeting yielded elongated cells in broth with compromised agar growth. Further studies on F. nucleatum clinical strain CTI-2 and Fusobacterium periodonticum revealed reduced indole synthesis when targeting tnaA . Moreover, silencing clpB in F. periodonticum decreased ClpB, increasing thermal sensitivity. In summary, our CRISPRi system streamlines gene inactivation across various fusobacterial strains. IMPORTANCE How can we effectively investigate the gene functions in Fusobacterium nucleatum , given the dual challenges of gene inactivation and the inherent genetic resistance of many strains? Traditional methods have been cumbersome and often inadequate. Addressing this, our work introduces a novel inducible CRISPRi system in which dCas9 expression is controlled at the translation level by a theophylline-responsive riboswitch unit, and sgRNA expression is driven by the robust, constitutive rpsJ promoter. This approach simplifies gene inactivation in the model organism (ATCC 23726) and extends its application to previously considered resistant strains like CTI-2 and Fusobacterium periodontium . With CRISPRi's potential, it is a pivotal tool for in-depth genetic studies into fusobacterial pathogenesis, potentially unlocking targeted therapeutic strategies.
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Fine DH, Schreiner H. Oral microbial interactions from an ecological perspective: a narrative review. FRONTIERS IN ORAL HEALTH 2023; 4:1229118. [PMID: 37771470 PMCID: PMC10527376 DOI: 10.3389/froh.2023.1229118] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2023] [Accepted: 08/16/2023] [Indexed: 09/30/2023] Open
Abstract
Landscape ecology is a relatively new field of study within the sub-specialty of ecology that considers time and space in addition to structure and function. Landscape ecology contends that both the configuration (spatial pattern) and the composition (organisms both at the macro and or micro level) of an ecology can change over time. The oral cavity is an ideal place to study landscape ecology because of the variety of landscapes, the dynamic nature of plaque biofilm development, and the easy access to biofilm material. This review is intended to provide some specific clinical examples of how landscape ecology can influence the understanding of oral diseases and act as a supplement to diagnosis and treatment. The purpose of this review is two-fold; (1) to illustrate how landscape ecology can be used to clarify the two most prominent microbiologically induced infections in the oral cavity, and (2) how studies of oral microbiology can be used to enhance the understanding of landscape ecology. The review will distinguish between "habitat" and "niche" in a landscape and extend the concept that a "patch", is the demarcating unit of a habitat within a landscape. The review will describe how; (1) an individual patch, defined by its shape, edges and internal components can have an influence on species within the patch, (2) spatial dynamics over time within a patch can lead to variations or diversities of species within that patch space, and (3) an unwelcoming environment can promote species extinction or departure/dispersion into a more favorable habitat. Understanding this dynamic in relationship to caries and periodontal disease is the focus of this review.
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Affiliation(s)
- Daniel H. Fine
- Department of Oral Biology, Rutgers School of Dental Medicine, Newark, NJ, United States
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68
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Arredondo A, Àlvarez G, Isabal S, Teughels W, Laleman I, Contreras MJ, Isbej L, Huapaya E, Mendoza G, Mor C, Nart J, Blanc V, León R. Comparative 16S rRNA gene sequencing study of subgingival microbiota of healthy subjects and patients with periodontitis from four different countries. J Clin Periodontol 2023; 50:1176-1187. [PMID: 37246304 DOI: 10.1111/jcpe.13827] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2022] [Revised: 03/15/2023] [Accepted: 05/02/2023] [Indexed: 05/30/2023]
Abstract
AIM To investigate the differences between the subgingival microbiota of healthy subjects (HS) and periodontitis patients (PP) from four different countries through a metagenomic approach. MATERIALS AND METHODS Subgingival samples were obtained from subjects from four different countries. Microbial composition was analysed through high-throughput sequencing of the V3-V4 region of the 16S rRNA gene. The country of origin, diagnosis and clinical and demographic variables of the subjects were used to analyse the microbial profiles. RESULTS In total, 506 subgingival samples were analysed: 196 from HS and 310 from patients with periodontitis. Differences in richness, diversity and microbial composition were observed when comparing samples pertaining to different countries of origin and different subject diagnoses. Clinical variables, such as bleeding on probing, did not significantly affect the bacterial composition of the samples. A highly conserved core of microbiota associated with periodontitis was detected, while the microbiota associated with periodontally HS was much more diverse. CONCLUSIONS Periodontal diagnosis of the subjects was the main variable explaining the composition of the microbiota in the subgingival niche. Nevertheless, the country of origin also had a significant impact on the microbiota and is therefore an important factor to consider when describing subgingival bacterial communities.
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Affiliation(s)
- A Arredondo
- Department of Microbiology, DENTAID Research Center, Barcelona, Spain
| | - G Àlvarez
- Department of Microbiology, DENTAID Research Center, Barcelona, Spain
| | - S Isabal
- Department of Microbiology, DENTAID Research Center, Barcelona, Spain
| | - W Teughels
- Department of Oral Health Sciences, KU Leuven and Dentistry, University Hospitals Leuven, Leuven, Belgium
| | - I Laleman
- Department of Oral Health Sciences, KU Leuven and Dentistry, University Hospitals Leuven, Leuven, Belgium
| | - M J Contreras
- School of Dentistry, Faculty of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - L Isbej
- School of Dentistry, Faculty of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile
- Pharmacology and Toxicology Programme, Faculty of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - E Huapaya
- Department of Periodontology, School of Dentistry, Universidad Científica del Sur, Lima, Peru
| | - G Mendoza
- Department of Periodontology, School of Dentistry, Universidad Científica del Sur, Lima, Peru
- Department of Periodontics, University of Pennsylvania, School of dental Medicine, Philadelphia, Pennsylvania, USA
| | - C Mor
- Department of Periodontology, Universitat Internacional de Catalunya, Barcelona, Spain
| | - J Nart
- Department of Periodontology, Universitat Internacional de Catalunya, Barcelona, Spain
| | - V Blanc
- Department of Microbiology, DENTAID Research Center, Barcelona, Spain
| | - R León
- Department of Microbiology, DENTAID Research Center, Barcelona, Spain
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Rao A, Lokesh J, D’Souza C, Prithvisagar KS, Subramanyam K, Karunasagar I, Kumar BK. Metagenomic Analysis to Uncover the Subgingival and Atherosclerotic Plaque Microbiota in Patients with Coronary Artery Disease. Indian J Microbiol 2023; 63:281-290. [PMID: 37781016 PMCID: PMC10533773 DOI: 10.1007/s12088-023-01082-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2023] [Accepted: 06/25/2023] [Indexed: 10/03/2023] Open
Abstract
The role of periodontal pathogens in the initiation and progression of atherosclerosis has been extensively researched, yet a precise causal mechanism has not been established. The subgingival microbiota may be a source of dissemination and may contribute to the development of atherosclerosis; hence this study attempted to characterize and compare the subgingival and atherosclerotic plaques. Plaque samples were subjected to 16S rRNA-based metagenomics to study microbiota associated with subgingival and atherosclerotic plaques collected from patients with coronary artery disease. The PCoA analysis showed that the microbiomes of subgingival plaques were highly scattered and showed a diverse microbial composition, unlike the atherosclerotic plaques that did not show evident variability in the microbial composition and formed a close distinct group. The abundance of various genera in the subgingival plaques revealed Fusobacterium (11%), Acinetobacter (13%), Veillonella (9%), and Prevotella (11%) among the top ten genera. The atherosclerotic plaques contained Acinetobacter (39%), Chryseobacterium (9%), Rhizobium (5%), and Staphylococcus (4%). All the patients examined in this study had either generalized or localized periodontitis with varying degrees of severity. The community microbiota analysis revealed that 22 bacterial genera were shared between two different plaques, with Acinetobacter being dominant. Based on the Human Oral Microbiome Database, 55% of the shared microbiota in this study have been listed as periodontal microbiota, with some of them found in increased proportions in patients with periodontitis suggesting the translocation of bacteria from the periodontal pockets into the circulation. This study provides valuable insights into the possible relationship between periodontal pathogens and atherosclerotic cardiovascular disease. Graphical Abstract
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Affiliation(s)
- Amita Rao
- Nitte (Deemed to be University), Department of Periodontics, AB Shetty Memorial Institute of Dental Sciences (ABSMIDS), Deralakatte, Mangalore, 575018 India
| | - Jep Lokesh
- Université de Pau et des Pays de l′Adour, E2S UPPA. INRAE, NUMEA, Saint-Pée-sur-Nivelle, France
| | - Caroline D’Souza
- Nitte(Deemed to be University), Division of Infectious Diseases, Nitte University Centre for Science Education and Research (NUCSER), Deralakatte, Mangalore, 575018 India
| | - Kattapuni Suresh Prithvisagar
- Nitte(Deemed to be University), Division of Infectious Diseases, Nitte University Centre for Science Education and Research (NUCSER), Deralakatte, Mangalore, 575018 India
| | - Kodangala Subramanyam
- Department of Cardiology, Srinivas Institute of Medical Sciences and Research Centre, Mangalore, India
| | - Indrani Karunasagar
- Nitte(Deemed to be University), Division of Infectious Diseases, Nitte University Centre for Science Education and Research (NUCSER), Deralakatte, Mangalore, 575018 India
| | - Ballamoole Krishna Kumar
- Nitte(Deemed to be University), Division of Infectious Diseases, Nitte University Centre for Science Education and Research (NUCSER), Deralakatte, Mangalore, 575018 India
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Tavares MDO, Dos Reis LD, Lopes WR, Schwarz LV, Rocha RKM, Scariot FJ, Echeverrigaray S, Delamare APL. Bacterial community associated with gingivitis and periodontitis in dogs. Res Vet Sci 2023; 162:104962. [PMID: 37542932 DOI: 10.1016/j.rvsc.2023.104962] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2023] [Revised: 06/20/2023] [Accepted: 07/22/2023] [Indexed: 08/07/2023]
Abstract
Periodontal disease is a chronic condition characterized by bacterial adhesion, followed by biofilm formation, and subsequently by an inflammatory process that progresses to gingivitis and later to periodontitis. The variations in the oral microbiota have been associated with the progression of this disease. This study evaluated the alteration of the cultivable oral microbiota in dogs with different oral health status. Thirty dogs were selected and divided into three groups: healthy, gingivitis, and periodontitis. The collected oral samples were seeded, and colonies with distinct phenotypic characteristics were isolated and classified using sequencing of the 16S rRNA gene. The DNA sequences were aligned, and a phylogenetic tree was constructed. Simpson's diversity index was calculated, and a dissimilarity matrix based on the Jaccard similarity index was used to plot a principal coordinate analysis. A total of 119 bacteria with different colony morphologies were isolated and classified into 4 phyla, 29 genera, and 45 species based on phylogenetic analysis. The results indicated an increase in bacteria belonging to the Proteobacteria phylum and a less extended decrease in Actinobacteria, Firmicutes, and Bacteroidetes phyla in dogs with periodontal disease (gingivitis and periodontitis) compared to healthy dogs. Representatives of the genera Neisseria sp., Corynebacterium sp., Pasteurella sp., and Moraxella sp. increased through the worsening of the periodontal disease, while Staphylococcus sp. decreased. All groups exhibited moderate to high levels of biodiversity index, and the plotted PCoA show a clear separation in the oral microbiome of dogs with periodontitis compared to dogs with gingivitis and the healthy group.
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Affiliation(s)
- Maurício de Oliveira Tavares
- University of Caxias do Sul (UCS), Institute of Biotechnology, Francisco Getúlio Vargas 1130, 95070-560 Caxias do Sul, RS, Brazil
| | - Lucas Dornelles Dos Reis
- University of Caxias do Sul (UCS), Institute of Biotechnology, Francisco Getúlio Vargas 1130, 95070-560 Caxias do Sul, RS, Brazil
| | - Wesley Renosto Lopes
- University of Caxias do Sul (UCS), Institute of Biotechnology, Francisco Getúlio Vargas 1130, 95070-560 Caxias do Sul, RS, Brazil
| | - Luisa Vivian Schwarz
- University of Caxias do Sul (UCS), Institute of Biotechnology, Francisco Getúlio Vargas 1130, 95070-560 Caxias do Sul, RS, Brazil
| | - Ronaldo Kauê Mattos Rocha
- University of Caxias do Sul (UCS), Institute of Biotechnology, Francisco Getúlio Vargas 1130, 95070-560 Caxias do Sul, RS, Brazil
| | - Fernando Joel Scariot
- University of Caxias do Sul (UCS), Institute of Biotechnology, Francisco Getúlio Vargas 1130, 95070-560 Caxias do Sul, RS, Brazil
| | - Sergio Echeverrigaray
- University of Caxias do Sul (UCS), Institute of Biotechnology, Francisco Getúlio Vargas 1130, 95070-560 Caxias do Sul, RS, Brazil
| | - Ana Paula Longaray Delamare
- University of Caxias do Sul (UCS), Institute of Biotechnology, Francisco Getúlio Vargas 1130, 95070-560 Caxias do Sul, RS, Brazil.
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Johnston W, Rosier BT, Carda-Diéguez M, Paterson M, Watson P, Piela K, Goulding M, Ramage G, Baranyia D, Chen T, Al-Hebshi NN, Mira A, Culshaw S. Longitudinal changes in subgingival biofilm composition following periodontal treatment. J Periodontol 2023; 94:1065-1077. [PMID: 36960491 DOI: 10.1002/jper.22-0749] [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: 12/22/2022] [Revised: 02/22/2023] [Accepted: 03/10/2023] [Indexed: 03/25/2023]
Abstract
BACKGROUND Current periodontal treatment involves instrumentation using hand and/or ultrasonic instruments, which are used either alone or in combination based on patient and clinician preference, with comparable clinical outcomes. This study sought to investigate early and later changes in the subgingival biofilm following periodontal treatment, to identify whether these changes were associated with treatment outcomes, and to investigate whether the biofilm responded differently to hand compared with ultrasonic instruments. METHODS This was a secondary-outcome analysis of a randomized-controlled trial. Thirty-eight periodontitis patients received full-mouth subgingival instrumentation using hand (n = 20) or ultrasonic instrumentation (n = 18). Subgingival plaque was sampled at baseline and 1, 7, and 90 days following treatment. Bacterial DNA was analyzed using 16S rRNA sequencing. Periodontal clinical parameters were evaluated before and after treatment. RESULTS Biofilm composition was comparable in both (hand and ultrasonics) treatment groups at all time points (all genera and species; p[adjusted] > 0.05). Large-scale changes were observed within groups across time points. At days 1 and 7, taxonomic diversity and dysbiosis were reduced, with an increase in health-associated genera including Streptococcus and Rothia equating to 30% to 40% of the relative abundance. When reassessed at day 90 a subset of samples reformed a microbiome more comparable with baseline, which was independent of instrumentation choice and residual disease. CONCLUSIONS Hand and ultrasonic instruments induced comparable impacts on the subgingival plaque microbiome. There were marked early changes in the subgingival biofilm composition, although there was limited evidence that community shifts associated with treatment outcomes.
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Affiliation(s)
- William Johnston
- Oral Sciences, Dental School, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow, UK
| | - Bob T Rosier
- Department of Genomics and Health, The Foundation for the Promotion of Health and Biomedical Research (FISABIO), Valencia, Spain
| | - Miguel Carda-Diéguez
- Department of Genomics and Health, The Foundation for the Promotion of Health and Biomedical Research (FISABIO), Valencia, Spain
| | - Michael Paterson
- Oral Sciences, Dental School, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow, UK
| | - Paddy Watson
- Oral Sciences, Dental School, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow, UK
| | - Krystyna Piela
- Oral Sciences, Dental School, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow, UK
- Division of Dentistry, Medical University of Lodz, Lodz, Poland
| | - Marilyn Goulding
- Global Clinical Affairs, Dentsply Sirona, York, Pennsylvania, USA
| | - Gordon Ramage
- Oral Sciences, Dental School, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow, UK
| | - Divyashri Baranyia
- Department of Oral Health Sciences, Temple University, Philadelphia, Pennsylvania, USA
| | - Tsute Chen
- Department of Microbiology, Forsyth Institute, Cambridge, Massachusetts, USA
| | - Nezar N Al-Hebshi
- Department of Oral Health Sciences, Temple University, Philadelphia, Pennsylvania, USA
| | - Alex Mira
- Department of Genomics and Health, The Foundation for the Promotion of Health and Biomedical Research (FISABIO), Valencia, Spain
- CIBER Center for Epidemiology and Public Health, Madrid, Spain
| | - Shauna Culshaw
- Oral Sciences, Dental School, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow, UK
- Department of Periodontology, University Center for Dental Medicine, University of Basel, Basel, Switzerland
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72
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Lee YH, Hong JY. Oral microbiome as a co-mediator of halitosis and periodontitis: a narrative review. FRONTIERS IN ORAL HEALTH 2023; 4:1229145. [PMID: 37719278 PMCID: PMC10500072 DOI: 10.3389/froh.2023.1229145] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2023] [Accepted: 08/18/2023] [Indexed: 09/19/2023] Open
Abstract
Objective Halitosis or oral malodor is an unpleasant odor from the oral cavity. However, although patients with periodontitis often complain of halitosis, their relationship has not been fully elucidated. We reviewed previous literature based on the hypothesis that the relationship between halitosis and periodontitis is mediated by the oral microbiome. Materials and methods This narrative review sought to provide insight into the causative role of the oral microbiome in influencing halitosis and periodontitis. In addition, we tried to deepen knowledge related to the relationship between halitosis and periodontitis generated by the oral microbiome accumulated over the past 40 years. Results From 1984 to 2023, a total of 106 papers that carefully and scientifically dealt with halitosis and periodontitis were included in this narrative review. Based on previous results, halitosis and periodontitis were closely related. For decades, researchers have taken an intriguing approach to the question of whether there is a relationship between halitosis and periodontitis. Central factors in the relationship between halitosis and periodontitis include volatile sulfur compounds (VSCs), the oral microbiota that produce VSCs, and the inflammatory response. Conclusions Taken together, the more severe periodontitis, the higher the level of VSC in halitosis, which may be mediated by oral microbiome. However, the relationship between the occurrence, maintenance, and exacerbation of periodontitis and halitosis is not a necessary and sufficient condition for each other because they are complex interplay even in one individual.
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Affiliation(s)
- Yeon-Hee Lee
- Department of Orofacial Pain and Oral Medicine, Kyung Hee University School of Dentistry, Kyung Hee University Medical Center, Seoul, Republic of Korea
| | - Ji-Youn Hong
- Department of Periodontology, Periodontal-Implant Clinical Research Institute, School of Dentistry, Kyung Hee University, Seoul, Republic of Korea
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Irie K, Azuma T, Tomofuji T, Yamamoto T. Exploring the Role of IL-17A in Oral Dysbiosis-Associated Periodontitis and Its Correlation with Systemic Inflammatory Disease. Dent J (Basel) 2023; 11:194. [PMID: 37623290 PMCID: PMC10453731 DOI: 10.3390/dj11080194] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2023] [Revised: 08/01/2023] [Accepted: 08/09/2023] [Indexed: 08/26/2023] Open
Abstract
Oral microbiota play a pivotal role in maintaining homeostasis, safeguarding the oral cavity, and preventing the onset of disease. Oral dysbiosis has the potential to trigger pro-inflammatory effects and immune dysregulation, which can have a negative impact on systemic health. It is regarded as a key etiological factor for periodontitis. The emergence and persistence of oral dysbiosis have been demonstrated to mediate inflammatory pathology locally and at distant sites. The heightened inflammation observed in oral dysbiosis is dependent upon the secretion of interleukin-17A (IL-17A) by various innate and adaptive immune cells. IL-17A has been found to play a significant role in host defense mechanisms by inducing antibacterial peptides, recruiting neutrophils, and promoting local inflammation via cytokines and chemokines. This review seeks to present the current knowledge on oral dysbiosis and its prevention, as well as the underlying role of IL-17A in periodontitis induced by oral dysbiosis and its impact on systemic inflammatory disease.
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Affiliation(s)
- Koichiro Irie
- Department of Preventive Dentistry and Dental Public Health, Kanagawa Dental University, Yokosuka 238-8580, Japan;
| | - Tetsuji Azuma
- Department of Community Oral Health, School of Dentistry, Asahi University, Mizuho 501-0296, Japan; (T.A.); (T.T.)
| | - Takaaki Tomofuji
- Department of Community Oral Health, School of Dentistry, Asahi University, Mizuho 501-0296, Japan; (T.A.); (T.T.)
| | - Tatsuo Yamamoto
- Department of Preventive Dentistry and Dental Public Health, Kanagawa Dental University, Yokosuka 238-8580, Japan;
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Fontani F, Boano R, Cinti A, Demarchi B, Sandron S, Rampelli S, Candela M, Traversari M, Latorre A, Iacovera R, Abondio P, Sarno S, Mackie M, Collins M, Radini A, Milani C, Petrella E, Giampalma E, Minelli A, Larocca F, Cilli E, Luiselli D. Bioarchaeological and paleogenomic profiling of the unusual Neolithic burial from Grotta di Pietra Sant'Angelo (Calabria, Italy). Sci Rep 2023; 13:11978. [PMID: 37488251 PMCID: PMC10366206 DOI: 10.1038/s41598-023-39250-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2023] [Accepted: 07/21/2023] [Indexed: 07/26/2023] Open
Abstract
The Neolithic burial of Grotta di Pietra Sant'Angelo (CS) represents a unique archaeological finding for the prehistory of Southern Italy. The unusual placement of the inhumation at a rather high altitude and far from inhabited areas, the lack of funerary equipment and the prone deposition of the body find limited similarities in coeval Italian sites. These elements have prompted wider questions on mortuary customs during the prehistory of Southern Italy. This atypical case requires an interdisciplinary approach aimed to build an integrated bioarchaeological profile of the individual. The paleopathological investigation of the skeletal remains revealed the presence of numerous markers that could be associated with craft activities, suggesting possible interpretations of the individual's lifestyle. CT analyses, carried out on the maxillary bones, showed the presence of a peculiar type of dental wear, but also a good density of the bone matrix. Biomolecular and micromorphological analyses of dental calculus highlight the presence of a rich Neolithic-like oral microbiome, the composition of which is consistent with the presence pathologies. Finally, paleogenomic data obtained from the individual were compared with ancient and modern Mediterranean populations, including unpublished high-resolution genome-wide data for 20 modern inhabitants of the nearby village of San Lorenzo Bellizzi, which provided interesting insights into the biodemographic landscape of the Neolithic in Southern Italy.
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Affiliation(s)
- Francesco Fontani
- Department of Cultural Heritage, University of Bologna, Via Degli Ariani 1, 48121, Ravenna, Italy.
| | - Rosa Boano
- Department of Life Sciences and Systems Biology, University of Turin, Via Accademia Albertina 13, 10123, Torino, Italy
| | - Alessandra Cinti
- Department of Life Sciences and Systems Biology, University of Turin, Via Accademia Albertina 13, 10123, Torino, Italy
| | - Beatrice Demarchi
- Department of Life Sciences and Systems Biology, University of Turin, Via Accademia Albertina 13, 10123, Torino, Italy
| | - Sarah Sandron
- Department of Life Sciences and Systems Biology, University of Turin, Via Accademia Albertina 13, 10123, Torino, Italy
| | - Simone Rampelli
- Department of Pharmacy and Biotechnology, University of Bologna, Via Belmeloro 6, 40126, Bologna, Italy
| | - Marco Candela
- Department of Pharmacy and Biotechnology, University of Bologna, Via Belmeloro 6, 40126, Bologna, Italy
| | - Mirko Traversari
- Department of Cultural Heritage, University of Bologna, Via Degli Ariani 1, 48121, Ravenna, Italy
| | - Adriana Latorre
- Department of Cultural Heritage, University of Bologna, Via Degli Ariani 1, 48121, Ravenna, Italy
| | - Rocco Iacovera
- Department of Cultural Heritage, University of Bologna, Via Degli Ariani 1, 48121, Ravenna, Italy
| | - Paolo Abondio
- Department of Cultural Heritage, University of Bologna, Via Degli Ariani 1, 48121, Ravenna, Italy
- Department of Biological, Geological and Environmental Sciences, University of Bologna, Via Selmi 3, 40126, Bologna, Italy
| | - Stefania Sarno
- Department of Biological, Geological and Environmental Sciences, University of Bologna, Via Selmi 3, 40126, Bologna, Italy
| | - Meaghan Mackie
- Department of Life Sciences and Systems Biology, University of Turin, Via Accademia Albertina 13, 10123, Torino, Italy
- Faculty of Health and Medical Sciences, The Novo Nordisk Foundation Center for Protein Research, University of Copenhagen, Blegdamsvej 3B, 2200, København, Denmark
- Faculty of Health and Medical Sciences, The Globe Institute, University of Copenhagen, Øster Farimagsgade 5, 1353, København, Denmark
- School of Archeology, University College Dublin, Belfield, Dublin 4, Ireland
| | - Matthew Collins
- Faculty of Health and Medical Sciences, The Globe Institute, University of Copenhagen, Øster Farimagsgade 5, 1353, København, Denmark
- McDonald Institute for Archaeological Research, University of Cambridge, Downing Street, Cambridge, CB2 3ER, UK
| | - Anita Radini
- School of Archeology, University College Dublin, Belfield, Dublin 4, Ireland
| | - Chantal Milani
- SIOF - Italian Society of Forensic Odontology, Strada Degli Schiocchi 12, 41124, Modena, Italy
| | - Enrico Petrella
- Radiology Unit, Morgagni-Pierantoni Hospital, AUSL Romagna, Via Carlo Forlanini 34, 47121, Forlì, Italy
| | - Emanuela Giampalma
- Radiology Unit, Morgagni-Pierantoni Hospital, AUSL Romagna, Via Carlo Forlanini 34, 47121, Forlì, Italy
| | - Antonella Minelli
- Department of Humanities, Education and Social Sciences, University of Molise, Via Francesco De Sanctis, 86100, Campobasso, Italy
| | - Felice Larocca
- Speleo-Archaeological Research Group, University of Bari, Piazza Umberto I 1, 70121, Bari, Italy
- Speleo-Archaeological Research Centre "Enzo dei Medici", Via Lucania 3, 87070, Roseto Capo Spulico (CS), Italy
| | - Elisabetta Cilli
- Department of Cultural Heritage, University of Bologna, Via Degli Ariani 1, 48121, Ravenna, Italy
| | - Donata Luiselli
- Department of Cultural Heritage, University of Bologna, Via Degli Ariani 1, 48121, Ravenna, Italy.
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Kondo T, Gleason A, Okawa H, Hokugo A, Nishimura I. Mouse gingival single-cell transcriptomic atlas: An activated fibroblast subpopulation guides oral barrier immunity in periodontitis. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.04.13.536751. [PMID: 37546811 PMCID: PMC10401928 DOI: 10.1101/2023.04.13.536751] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/08/2023]
Abstract
Periodontitis, one of the most common non-communicable diseases, is characterized by chronic oral inflammation and uncontrolled tooth supporting alveolar bone resorption. Its underlying mechanism to initiate aberrant oral barrier immunity has yet to be delineated. Here, we report a unique fibroblast subpopulation activated to guide oral inflammation (AG fibroblasts) identified in a single-cell RNA sequencing gingival cell atlas constructed from the mouse periodontitis models. AG fibroblasts localized beneath the gingival epithelium and in the cervical periodontal ligament responded to the ligature placement and to the discrete application of Toll-like receptor stimulants to mouse maxillary tissue. The upregulated chemokines and ligands of AG fibroblasts linked to the putative receptors of neutrophils in the early stages of periodontitis. In the established chronic inflammation, neutrophils together with AG fibroblasts appeared to induce type 3 innate lymphoid cells (ILC3s) that were the primary source of interleukin-17 cytokines. The comparative analysis of Rag2-/- and Rag2γc-/- mice suggested that ILC3 contributed to the cervical alveolar bone resorption interfacing the gingival inflammation. We propose that AG fibroblasts function as a previously unrecognized surveillant to initiate gingival inflammation leading to periodontitis through the AG fibroblast-neutrophil-ILC3 axis.
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Affiliation(s)
- Takeru Kondo
- Weintraub Center for Reconstructive Biotechnology, UCLA School of Dentistry, Los Angeles, CA 90095, USA
- Division of Molecular and Regenerative Prosthodontics, Tohoku University Graduate School of Dentistry, Sendai, Miyagi 980-8575, Japan
| | - Annie Gleason
- Weintraub Center for Reconstructive Biotechnology, UCLA School of Dentistry, Los Angeles, CA 90095, USA
- UCLA Bruin in Genomics Summer Program
| | - Hiroko Okawa
- Weintraub Center for Reconstructive Biotechnology, UCLA School of Dentistry, Los Angeles, CA 90095, USA
- Division of Molecular and Regenerative Prosthodontics, Tohoku University Graduate School of Dentistry, Sendai, Miyagi 980-8575, Japan
| | - Akishige Hokugo
- Weintraub Center for Reconstructive Biotechnology, UCLA School of Dentistry, Los Angeles, CA 90095, USA
- Regenerative Bioengineering and Repair Laboratory, Division of Plastic and Reconstructive Surgery, Department of Surgery, David Geffen School of Medicine at UCLA, Los Angeles, CA 90095, USA
| | - Ichiro Nishimura
- Weintraub Center for Reconstructive Biotechnology, UCLA School of Dentistry, Los Angeles, CA 90095, USA
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Huang X, Liu Y, Wang Q, Rehman HM, Horváth D, Zhou S, Fu R, Zhang L, Szöllősi AG, Li Z. Brief literature review and comprehensive bioinformatics analytics unravel the potential mechanism of curcumin in the treatment of periodontitis. BMC Oral Health 2023; 23:469. [PMID: 37422651 PMCID: PMC10329799 DOI: 10.1186/s12903-023-03181-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2023] [Accepted: 06/28/2023] [Indexed: 07/10/2023] Open
Abstract
OBJECTIVE Periodontitis is a chronic oral disease prevalent worldwide, and natural products are recommended as adjunctive therapy due to their minor side effects. Curcumin, a widely used ancient compound, has been reported to possess therapeutic effects in periodontitis. However, the exact mechanism underlying its activity remains unclear. In this context, the present study aimed to conduct computational simulations to uncover the potential mechanism of action of Curcumin in the treatment of periodontitis. MATERIALS AND METHODS Single-cell analysis was conducted using a dataset (i.e., GSE164241) curated from the Gene Expression Omnibus (GEO) database through an R package "Seurat package." Bulk RNA sequencing data were curated from GSE10334 and GSE16134 and processed by R package "Limma." Then, the marker genes in the single-cell transcriptome and differentially expressed genes (DEGs) in the bulk transcriptome were integrated. Kyoto Encyclopedia of Genes and Genomes (KEGG) and Gene Ontology (GO) analyses were also carried out to reveal their functionalities. Key targets were mined from their protein-protein interaction (PPI) network topologically. Afterward, molecular docking was performed. The top-ranked pose was subjected to molecular dynamics simulations to investigate the stability of the docking result. RESULTS FOS, CXCL1, CXCL8, and IL1B, were filtered after a series of selected processes. The results of molecular modeling suggested that except for IL1B, the Vena Scores of the rest exceeded -5 kcal/mol. Furthermore, the molecular dynamic simulation indicated that the binding of the CXCL8-Curcumin complex was stable over the entire 100 ns simulation. CONCLUSION The present study unlocked the binding modes of CXCL1, FOS, and CXCL8 with the Curcumin molecule, which were relatively stable, especially for CXCL8, hindering its promising potential to serve as the critical targets of Curcumin in periodontitis treatment.
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Affiliation(s)
- Xufeng Huang
- Faculty of Dentistry, University of Debrecen, Debrecen, Hungary
- Department of Immunology, University of Debrecen, Debrecen, Hungary
| | - Ying Liu
- Department of Cardiology, Sixth Medical Center, PLA General Hospital, Beijing, China
| | - Qi Wang
- Department of Gastroenterology, Affiliated Hospital of Jiangsu University, Jiangsu University, Zhenjiang, China
| | - Hafiz Muzzammel Rehman
- School of Biochemistry and Biotechnology, University of the Punjab, LahorePunjab, 54590 Pakistan
- Alnoorians Group of Institutes, 55-Elahi Bukhsh Park, Amir Road, Shad Bagh, Lahore, 54000 Pakistan
| | - Dorottya Horváth
- Department of Immunology, University of Debrecen, Debrecen, Hungary
| | - Shujing Zhou
- Department of Immunology, University of Debrecen, Debrecen, Hungary
| | - Rao Fu
- Department of Oral and Maxillofacial-Head and Neck Oncology, College of Stomatology, Shanghai Ninth People’s Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai Jiao Tong University, Shanghai, China
- National Center for Stomatology and National Clinical Research Center for Oral Diseases, Shanghai, China
- Shanghai Key Laboratory of Stomatology, Shanghai, China
| | - Ling Zhang
- Department of Oral and Maxillofacial-Head and Neck Oncology, College of Stomatology, Shanghai Ninth People’s Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai Jiao Tong University, Shanghai, China
- National Center for Stomatology and National Clinical Research Center for Oral Diseases, Shanghai, China
- Shanghai Key Laboratory of Stomatology, Shanghai, China
| | | | - Zhengrui Li
- Department of Oral and Maxillofacial-Head and Neck Oncology, College of Stomatology, Shanghai Ninth People’s Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai Jiao Tong University, Shanghai, China
- National Center for Stomatology and National Clinical Research Center for Oral Diseases, Shanghai, China
- Shanghai Key Laboratory of Stomatology, Shanghai, China
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Iniesta M, Chamorro C, Ambrosio N, Marín MJ, Sanz M, Herrera D. Subgingival microbiome in periodontal health, gingivitis and different stages of periodontitis. J Clin Periodontol 2023; 50:905-920. [PMID: 36792073 DOI: 10.1111/jcpe.13793] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2022] [Revised: 02/04/2023] [Accepted: 02/10/2023] [Indexed: 02/17/2023]
Abstract
AIM To characterize the subgingival microbiome in subjects with different periodontal health statuses. MATERIALS AND METHODS In this cross-sectional observational study, subgingival samples were harvested from Spanish subjects with different periodontal health statuses, based on the 2018 Classification of Periodontal and Peri-Implant Diseases and Conditions. Samples were processed using high-throughput sequencing technologies (Illumina MiSeq). Taxa differentially abundant were identified using Analysis of Compositions of Microbiomes with Bias Correction (ANCOM-BC). α- and β-diversity metrics were calculated using q2-diversity in QIIME2. The analyses were adjusted for age, gender and smoking status. RESULTS The identified subgingival microbiome showed statistically significant differences among subjects, categorized into periodontal health, gingivitis and stages I-II and III-IV periodontitis (p < .05). In patients with severe (stages III-IV) periodontitis, the genera Filifactor and Fretibacterium were detected 24 times more frequently than in periodontally healthy subjects. Similarly, the genera Porphyromonas, Prevotella and Tannerella were detected four times more frequently (p < .05). The genera Granulicatella, Streptococcus, Paracoccus, Pseudomonas, Haemophilus, Actinobacteria, Bergeyella and Capnocytophaga were significantly associated with healthier periodontal status (p < .05). CONCLUSIONS Significant differences were detected in the subgingival microbiome among periodontal health, gingivitis and stages I-II or III-IV periodontitis, suggesting overlapping, yet distinguishable microbial profiles.
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Affiliation(s)
- Margarita Iniesta
- ETEP (Etiology and Therapy of Periodontal and Peri-Implant Diseases) Research Group, School of Dentistry, Complutense University of Madrid, Madrid, Spain
| | - Cristina Chamorro
- ETEP (Etiology and Therapy of Periodontal and Peri-Implant Diseases) Research Group, School of Dentistry, Complutense University of Madrid, Madrid, Spain
| | - Nagore Ambrosio
- ETEP (Etiology and Therapy of Periodontal and Peri-Implant Diseases) Research Group, School of Dentistry, Complutense University of Madrid, Madrid, Spain
| | - María José Marín
- ETEP (Etiology and Therapy of Periodontal and Peri-Implant Diseases) Research Group, School of Dentistry, Complutense University of Madrid, Madrid, Spain
| | - Mariano Sanz
- ETEP (Etiology and Therapy of Periodontal and Peri-Implant Diseases) Research Group, School of Dentistry, Complutense University of Madrid, Madrid, Spain
| | - David Herrera
- ETEP (Etiology and Therapy of Periodontal and Peri-Implant Diseases) Research Group, School of Dentistry, Complutense University of Madrid, Madrid, Spain
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Reis AA, Monteiro MF, Bonilha GM, Saraiva L, Araújo C, Santamaria MP, Casati MZ, Kumar P, Casarin RCV. Parents with periodontitis drive the early acquisition of dysbiotic microbiomes in their offspring. J Clin Periodontol 2023; 50:890-904. [PMID: 37086047 DOI: 10.1111/jcpe.13815] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2022] [Revised: 03/24/2023] [Accepted: 03/27/2023] [Indexed: 04/23/2023]
Abstract
AIM To evaluate the microbial colonization in different dentition phases on individuals from 0 to 18 years of age belonging to families with a history of periodontitis compared to descendants of periodontally healthy parents. MATERIALS AND METHODS The offspring of subjects with periodontitis ('Perio' group) and the offspring of periodontally healthy subjects ('Healthy' group), matched for gender and age, were included in this cross-sectional study and divided according to the dentition phase: pre-dentate, primary, mixed and permanent. The patients were clinically assessed, and their saliva was collected. DNA was extracted, and V1-V3 and V4-V5 regions of the 16S rRNA gene were sequenced. RESULTS Fifty children of parents with periodontitis and 50 from healthy parents were included in the study and divided according to the dentition phase: pre-dentate (n = 5/group), primary dentition (n = 15/group), mixed dentition (n = 15/group) and permanent dentition (n = 15/group) in each group. The microbiome composition was different between dentitions for both groups. Children of the Perio group presented a microbial diversity different from that of the Healthy group in mixed and permanent dentitions. The more intense shift in the community occurred between primary and mixed dentition in the Perio group, while the transition between mixed and permanent dentition was the period with greater changes in the microbiome for the Healthy group. Furthermore, a pathogen-rich environment-higher prevalence and abundance of periodontitis-associated species such as Prevotella spp., Selenomonas spp., Leptotrichia spp., Filifactor alocis, Prevotella intermedia, Treponema denticola and Tannerella forsythia- was observed in the Perio group. CONCLUSIONS The parents' periodontal status significantly affects the microbiome composition of their offspring from an early age. The mixed dentition was the phase associated with establishing a dysbiotic and pathogen-rich microbiome in descendants of parents with periodontitis.
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Affiliation(s)
| | | | | | - Luciana Saraiva
- School of Dentistry, University of São Paulo, São Paulo, Brazil
| | - Cassia Araújo
- Institute of Health Science, São Paulo State University, São Paulo, Brazil
| | | | | | - Purnima Kumar
- School of Dentistry, University of Michigan, Ann Arbor, Michigan, USA
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Winning L, Moran G, McClory M, El Karim I, Lundy FT, Patterson CC, Linden D, Cullen KM, Kee F, Linden GJ. Subgingival microbial diversity and respiratory decline: A cross-sectional study. J Clin Periodontol 2023; 50:921-931. [PMID: 37051866 PMCID: PMC10947346 DOI: 10.1111/jcpe.13819] [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: 10/23/2022] [Revised: 03/25/2023] [Accepted: 04/03/2023] [Indexed: 04/14/2023]
Abstract
AIM To investigate whether there is an association between subgingival microbial diversity and reduced respiratory function. MATERIALS AND METHODS A group of dentate 58-72-year-old men in Northern Ireland had a comprehensive periodontal examination including subgingival plaque sampling. DNA was extracted from plaque samples and the V1-V3 regions of the 16S rRNA gene were analysed by high-throughput sequencing and a microbial diversity index (MDI) was derived. Spirometry measurements were made using a wedge bellows spirometer. The primary outcome variable of interest was the percentage of predicted forced expiratory volume in 1 s (% predicted FEV1 ). Analysis included multiple linear regression with adjustment for various confounders. RESULTS Five-hundred and seven men were included in the analysis. The mean age was 63.6 years (SD = 3.1). Of these, 304 (60.0%) men had no or mild periodontitis, 105 (20.7%) had moderate periodontitis and 98 (19.3%) had severe periodontitis. Multiple linear regression analysis showed that a one unit increase in MDI was associated with a 0.71% loss (95% confidence interval: 0.06%-1.35%; p = .03) in % predicted FEV1 after adjustment for all confounders. CONCLUSIONS In this group of dentate men from Northern Ireland, subgingival microbial diversity was associated with reduced respiratory function.
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Affiliation(s)
- Lewis Winning
- Dublin Dental University Hospital, Trinity College DublinDublinIreland
| | - Gary Moran
- Dublin Dental University Hospital, Trinity College DublinDublinIreland
| | - Mary McClory
- Centre for Experimental Medicine, School of Medicine, Dentistry and Biomedical SciencesQueen's University BelfastBelfastNorthern Ireland
| | - Ikhlas El Karim
- Centre for Experimental Medicine, School of Medicine, Dentistry and Biomedical SciencesQueen's University BelfastBelfastNorthern Ireland
| | - Fionnuala T. Lundy
- Centre for Experimental Medicine, School of Medicine, Dentistry and Biomedical SciencesQueen's University BelfastBelfastNorthern Ireland
| | - Christopher C. Patterson
- Centre for Public Health, School of Medicine, Dentistry and Biomedical SciencesQueen's University BelfastBelfastNorthern Ireland
| | - Dermot Linden
- Centre for Experimental Medicine, School of Medicine, Dentistry and Biomedical SciencesQueen's University BelfastBelfastNorthern Ireland
| | - Kathy M. Cullen
- Centre for Medical Education, School of Medicine Dentistry and Biomedical SciencesQueen's University BelfastBelfastNorthern Ireland
| | - Frank Kee
- Centre for Public Health, School of Medicine, Dentistry and Biomedical SciencesQueen's University BelfastBelfastNorthern Ireland
| | - Gerard J. Linden
- Centre for Public Health, School of Medicine, Dentistry and Biomedical SciencesQueen's University BelfastBelfastNorthern Ireland
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80
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Sobstyl A, Chałupnik A, Mertowska P, Grywalska E. How Do Microorganisms Influence the Development of Endometriosis? Participation of Genital, Intestinal and Oral Microbiota in Metabolic Regulation and Immunopathogenesis of Endometriosis. Int J Mol Sci 2023; 24:10920. [PMID: 37446108 DOI: 10.3390/ijms241310920] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2023] [Revised: 06/23/2023] [Accepted: 06/26/2023] [Indexed: 07/15/2023] Open
Abstract
Microorganisms inhabiting the human body play an extremely key role in its proper functioning, as well as in the development of the immune system, which, by maintaining the immune balance, allows you to enjoy health. Dysbiosis of the intestinal microbiota, or in the oral cavity or reproductive tract, understood as a change in the number and diversity of all microorganisms inhabiting them, may correlate with the development of many diseases, including endometriosis, as researchers have emphasized. Endometriosis is an inflammatory, estrogen-dependent gynecological condition defined by the growth of endometrial cells outside the uterine cavity. Deregulation of immune homeostasis resulting from microbiological disorders may generate chronic inflammation, thus creating an environment conducive to the increased adhesion and angiogenesis involved in the development of endometriosis. In addition, research in recent years has implicated bacterial contamination and immune activation, reduced gastrointestinal function by cytokines, altered estrogen metabolism and signaling, and abnormal progenitor and stem cell homeostasis, in the pathogenesis of endometriosis. The aim of this review was to present the influence of intestinal, oral and genital microbiota dysbiosis in the metabolic regulation and immunopathogenesis of endometriosis.
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Affiliation(s)
- Anna Sobstyl
- Department of Experimental Immunology, Medical University of Lublin, Chodzki Street, 20-093 Lublin, Poland
| | - Aleksandra Chałupnik
- Department of Experimental Immunology, Medical University of Lublin, Chodzki Street, 20-093 Lublin, Poland
| | - Paulina Mertowska
- Department of Experimental Immunology, Medical University of Lublin, Chodzki Street, 20-093 Lublin, Poland
| | - Ewelina Grywalska
- Department of Experimental Immunology, Medical University of Lublin, Chodzki Street, 20-093 Lublin, Poland
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81
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Beall CJ, Lilly EA, Granada C, Treas K, Dubois KR, Hashmi SB, Vazquez JA, Hagensee ME, Griffen AL, Leys EJ, Fidel PL. Independent Effects of HIV and Antiretroviral Therapy on the Oral Microbiome Identified by Multivariate Analyses. mBio 2023; 14:e0040923. [PMID: 37071004 PMCID: PMC10294613 DOI: 10.1128/mbio.00409-23] [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: 02/16/2023] [Accepted: 03/29/2023] [Indexed: 04/19/2023] Open
Abstract
The oral microbiome is an important predictor of health and disease. We recently reported significant yet modest effects of HIV under highly active antiretroviral therapy (ART) on the oral microbiome (bacterial and fungal) in a large cohort of HIV-positive (HIV+) and matched HIV-negative (HIV-) individuals. As it was unclear whether ART added to or masked further effects of HIV on the oral microbiome, the present study aimed to analyze the effects of HIV and ART independently, which also included HIV- subjects on preexposure prophylaxis (PrEP) therapy. Cross-sectional analyses of the effect of HIV devoid of ART (HIV+ ART- versus matched HIV- subjects) showed a significant effect on both the bacteriome and mycobiome (P < 0.024) after controlling for other clinical variables (permutational multivariate analysis of variance [PERMANOVA] of Bray-Curtis dissimilarity). Cross-sectional analyses evaluating the effects of ART (HIV+ ART+ versus HIV+ ART- subjects) revealed a significant effect on the mycobiome (P < 0.007) but not the bacteriome. In parallel longitudinal analyses, ART (before versus after the initiation of ART) had a significant effect on the bacteriome, but not the mycobiome, of HIV+ and HIV- PrEP subjects (P < 0.005 and P < 0.016, respectively). These analyses also revealed significant differences in the oral microbiome and several clinical variables between HIV- PrEP subjects (pre-PrEP) and the HIV-matched HIV- group (P < 0.001). At the species level, a small number of differences in both bacterial and fungal taxa were identified within the effects of HIV and/or ART. We conclude that the effects of HIV and ART on the oral microbiome are similar to those of the clinical variables but collectively are modest overall. IMPORTANCE The oral microbiome can be an important predictor of health and disease. For persons living with HIV (PLWH), HIV and highly active antiretroviral therapy (ART) may have a significant influence on their oral microbiome. We previously reported a significant effect of HIV with ART on both the bacteriome and mycobiome. It was unclear whether ART added to or masked further effects of HIV on the oral microbiome. Hence, it was important to evaluate the effects of HIV and ART independently. For this, multivariate cross-sectional and longitudinal oral microbiome analyses (bacteriome and mycobiome) were conducted within the cohort, including HIV+ ART+ subjects and HIV+ and HIV- (preexposure prophylaxis [PrEP]) subjects before and after the initiation of ART. While we report independent significant effects of HIV and ART on the oral microbiome, we conclude that their influence is similar to that of the clinical variables but collectively modest overall.
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Affiliation(s)
- Clifford J. Beall
- Division of Biosciences, The Ohio State University College of Dentistry, Columbus, Ohio, USA
| | - Elizabeth A. Lilly
- Center of Excellence in Oral and Craniofacial Biology, Louisiana State University Health Center School of Dentistry, New Orleans, Louisiana, USA
| | - Carolina Granada
- Division of Infectious Diseases, Department of Medicine, Augusta University, Medical College of Georgia, Augusta, Georgia, USA
| | - Kelly Treas
- Center of Excellence in Oral and Craniofacial Biology, Louisiana State University Health Center School of Dentistry, New Orleans, Louisiana, USA
| | - Kenneth R. Dubois
- Center of Excellence in Oral and Craniofacial Biology, Louisiana State University Health Center School of Dentistry, New Orleans, Louisiana, USA
| | - Shahr B. Hashmi
- Division of Biosciences, The Ohio State University College of Dentistry, Columbus, Ohio, USA
| | - Jose A. Vazquez
- Division of Infectious Diseases, Department of Medicine, Augusta University, Medical College of Georgia, Augusta, Georgia, USA
| | - Michael E. Hagensee
- Section of Infectious Diseases, Department of Medicine, Louisiana State University Health Sciences Center, New Orleans, Louisiana, USA
| | - Ann L. Griffen
- Division of Biosciences, The Ohio State University College of Dentistry, Columbus, Ohio, USA
- Division of Pediatric Dentistry, The Ohio State University College of Dentistry, Columbus, Ohio, USA
| | - Eugene J. Leys
- Division of Biosciences, The Ohio State University College of Dentistry, Columbus, Ohio, USA
| | - Paul L. Fidel
- Center of Excellence in Oral and Craniofacial Biology, Louisiana State University Health Center School of Dentistry, New Orleans, Louisiana, USA
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82
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Soancă A, Leucuța DC, Roman A, Ciurea A, Negucioiu M, Pascu LC, Picoș A, Delean AG, Micu IC, Popa Wagner A, Rusu D. The Treatment of Severe Periodontitis Using a Local Antiseptic Desiccant and Subgingival Mechanical Instrumentation: A Pilot Study. J Clin Med 2023; 12:4286. [PMID: 37445321 DOI: 10.3390/jcm12134286] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2023] [Accepted: 06/24/2023] [Indexed: 07/15/2023] Open
Abstract
This randomized, split-mouth, controlled clinical study assessed the additional clinical benefits of a local desiccant antimicrobial agent (HY) combined with subgingival mechanical instrumentation (SRP) vs. SRP alone in treating severe periodontitis. Patients with stages III and IV periodontitis received full-mouth periodontal examinations at baseline and after a three-month follow-up. Two randomly selected hemiarches in each periodontitis patient were treated with SRP plus HY and were included in the test group, while the other two hemiarches received only SRP and were included in the control group. In thirty patients, the analyses of the evolution of the periodontal parameters over time showed statistically significant mean differences for the probing depths and clinical attachment level values resulting from all the examined sites, as well as from the interproximal sites (p < 0.001) in both the test and control groups. The intergroup comparisons of the same four parameters showed no significant differences (p = 0.322, p = 0.36, p = 0.516, and p = 0.509, respectively). Based on these study results, no additional benefits were obtained after HY subgingival applications.
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Affiliation(s)
- Andrada Soancă
- Department of Periodontology, Faculty of Dental Medicine, Iuliu Hatieganu University of Medicine and Pharmacy Cluj-Napoca, Victor Babes St., No. 15, 400012 Cluj-Napoca, Romania
| | - Daniel Corneliu Leucuța
- Department of Medical Informatics and Biostatistics, Iuliu Hatieganu University of Medicine and Pharmacy Cluj-Napoca, Louis Pasteur St., No. 6, 400349 Cluj-Napoca, Romania
| | - Alexandra Roman
- Department of Periodontology, Faculty of Dental Medicine, Iuliu Hatieganu University of Medicine and Pharmacy Cluj-Napoca, Victor Babes St., No. 15, 400012 Cluj-Napoca, Romania
| | - Andreea Ciurea
- Department of Periodontology, Faculty of Dental Medicine, Iuliu Hatieganu University of Medicine and Pharmacy Cluj-Napoca, Victor Babes St., No. 15, 400012 Cluj-Napoca, Romania
| | - Marius Negucioiu
- Department of Prosthodontics, Faculty of Dental Medicine, Iuliu Hatieganu University of Medicine and Pharmacy Cluj-Napoca, Clinicilor St., No. 32, 400006 Cluj-Napoca, Romania
| | - Laurențiu Cătălin Pascu
- Department of Prosthodontics, Faculty of Dental Medicine, Iuliu Hatieganu University of Medicine and Pharmacy Cluj-Napoca, Clinicilor St., No. 32, 400006 Cluj-Napoca, Romania
| | - Andrei Picoș
- Department of Prevention in Dental Medicine, Faculty of Dental Medicine, Iuliu Hatieganu University of Medicine and Pharmacy Cluj-Napoca, Avram Iancu St., No. 31, 400347 Cluj-Napoca, Romania
| | - Ada Gabriela Delean
- Department of Cariology, Endodontics and Oral Pathology, Faculty of Dental Medicine, Iuliu Hatieganu University of Medicine and Pharmacy, Motilor St., No. 33, 400001 Cluj-Napoca, Romania
| | - Iulia Cristina Micu
- Department of Periodontology, Faculty of Dental Medicine, Iuliu Hatieganu University of Medicine and Pharmacy Cluj-Napoca, Victor Babes St., No. 15, 400012 Cluj-Napoca, Romania
| | - Aurel Popa Wagner
- Vascular Neurology and Dementia Center, University of Medicine, Essen, Hufeland St., No. 55, 45122 Essen, Germany
- Experimental Research Center in Normal and Pathological Aging (ARES), University of Medicine and Pharmacy Craiova, 200349 Craiova, Romania
| | - Darian Rusu
- Department of Periodontology, Anton Sculean Research Center of Periodontal and Peri-Implant Diseases, Faculty of Dental Medicine, Victor Babes University of Medicine and Pharmacy Timisoara, Bulevardul Revolutiei din 1989, No. 9, 300230 Timisoara, Romania
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83
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Ji S, Kook JK, Park SN, Lim YK, Choi GH, Jung JS. Characteristics of the Salivary Microbiota in Periodontal Diseases and Potential Roles of Individual Bacterial Species To Predict the Severity of Periodontal Disease. Microbiol Spectr 2023; 11:e0432722. [PMID: 37191548 PMCID: PMC10269672 DOI: 10.1128/spectrum.04327-22] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2022] [Accepted: 04/27/2023] [Indexed: 05/17/2023] Open
Abstract
The purposes of this study were to examine the compositional changes in the salivary microbiota according to the severity of periodontal disease and to verify whether the distribution of specific bacterial species in saliva can distinguish the severity of disease. Saliva samples were collected from 8 periodontally healthy controls, 16 patients with gingivitis, 19 patients with moderate periodontitis, and 29 patients with severe periodontitis. The V3 and V4 regions of the 16S rRNA gene in the samples were sequenced, and the levels of 9 bacterial species showing significant differences among the groups by sequencing analysis were identified using quantitative real-time PCR (qPCR). The predictive performance of each bacterial species in distinguishing the severity of disease was evaluated using a receiver operating characteristic curve. Twenty-nine species, including Porphyromonas gingivalis, increased as the severity of disease increased, whereas 6 species, including Rothia denticola, decreased. The relative abundances of P. gingivalis, Tannerella forsythia, Filifactor alocis, and Prevotella intermedia determined by qPCR were significantly different among the groups. The three bacterial species P. gingivalis, T. forsythia, and F. alocis were positively correlated with the sum of the full-mouth probing depth and were moderately accurate at distinguishing the severity of periodontal disease. In conclusion, the salivary microbiota showed gradual compositional changes according to the severity of periodontitis, and the levels of P. gingivalis, T. forsythia, and F. alocis in mouth rinse saliva had the ability to distinguish the severity of periodontal disease. IMPORTANCE Periodontal disease is one of the most widespread medical conditions and the leading cause of tooth loss, imposing high economic costs and an increasing burden worldwide as life expectancy increases. Changes in the subgingival bacterial community during the progression of periodontal disease can affect the entire oral ecosystem, and bacteria in saliva can reflect the degree of bacterial imbalance in the oral cavity. This study explored whether the specific bacterial species in saliva can distinguish the severity of periodontal disease by analyzing the salivary microbiota and suggested P. gingivalis, T. forsythia, and F. alocis as biomarkers for distinguishing the severity of periodontal disease in saliva.
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Affiliation(s)
- Suk Ji
- Department of Periodontology, Institute of Oral Health Science, Ajou University School of Medicine, Suwon, Republic of Korea
| | - Joong-Ki Kook
- Korean Collection for Oral Microbiology, Department of Oral Biochemistry, School of Dentistry, Chosun University, Gwangju, Republic of Korea
| | - Soon-Nang Park
- Korean Collection for Oral Microbiology, Department of Oral Biochemistry, School of Dentistry, Chosun University, Gwangju, Republic of Korea
| | - Yun Kyong Lim
- Korean Collection for Oral Microbiology, Department of Oral Biochemistry, School of Dentistry, Chosun University, Gwangju, Republic of Korea
| | - Geum Hee Choi
- Department of Periodontology, Institute of Oral Health Science, Ajou University School of Medicine, Suwon, Republic of Korea
| | - Jae-Suk Jung
- Department of Periodontology, Institute of Oral Health Science, Ajou University School of Medicine, Suwon, Republic of Korea
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84
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Qu S, Yu S, Ma X, Wang R. "Medicine food homology" plants promote periodontal health: antimicrobial, anti-inflammatory, and inhibition of bone resorption. Front Nutr 2023; 10:1193289. [PMID: 37396128 PMCID: PMC10307967 DOI: 10.3389/fnut.2023.1193289] [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: 03/24/2023] [Accepted: 05/24/2023] [Indexed: 07/04/2023] Open
Abstract
"Medicine food homology" (MFH) is a term with a lengthy history. It refers to the fact that a lot of traditional natural products have both culinary and therapeutic benefits. The antibacterial, anti-inflammatory and anticancer effects of MFH plants and their secondary metabolites have been confirmed by numerous research. A bacterially generated inflammatory illness with a complicated pathophysiology, periodontitis causes the loss of the teeth's supporting tissues. Several MFH plants have recently been shown to have the ability to prevent and treat periodontitis, which is exhibited by blocking the disease's pathogens and the virulence factors that go along with them, lowering the host's inflammatory reactions and halting the loss of alveolar bone. To give a theoretical foundation for the creation of functional foods, oral care products and adjuvant therapies, this review has especially explored the potential medicinal benefit of MFH plants and their secondary metabolites in the prevention and treatment of periodontitis.
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Affiliation(s)
- Shanlin Qu
- Hospital of Stomatology, Jilin University, Changchun, China
- Jilin Provincial Key Laboratory of Tooth Development and Bone Remodeling, Changchun, China
| | - Shuo Yu
- Hospital of Stomatology, Jilin University, Changchun, China
- Jilin Provincial Key Laboratory of Tooth Development and Bone Remodeling, Changchun, China
| | - Xiaolin Ma
- Hospital of Stomatology, Jilin University, Changchun, China
- Jilin Provincial Key Laboratory of Tooth Development and Bone Remodeling, Changchun, China
| | - Rui Wang
- Hospital of Stomatology, Jilin University, Changchun, China
- Jilin Provincial Key Laboratory of Tooth Development and Bone Remodeling, Changchun, China
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85
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Son M, Song Y, Yu Y, Kim SY, Huh JB, Bae EB, Cho WT, Na HS, Chung J. The oral microbiome of implant-abutment screw holes compared with the peri-implant sulcus and natural supragingival plaque in healthy individuals. J Periodontal Implant Sci 2023; 53:53.e20. [PMID: 37336525 DOI: 10.5051/jpis.2300100005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2022] [Revised: 03/14/2023] [Accepted: 04/27/2023] [Indexed: 06/21/2023] Open
Abstract
PURPOSE An implant-supported prosthesis consists of an implant fixture, an abutment, an internal screw that connects the abutment to the implant fixture, and the upper prosthesis. Numerous studies have investigated the microorganisms present on the implant surface, surrounding tissues, and the subgingival microflora associated with peri-implantitis. However, there is limited information regarding the microbiome within the internal screw space. In this study, microbial samples were collected from the supragingival surfaces of natural teeth, the peri-implant sulcus, and the implant-abutment screw hole, in order to characterize the microbiome of the internal screw space in healthy subjects. METHODS Samples were obtained from the supragingival region of natural teeth, the peri-implant sulcus, and the implant screw hole in 20 healthy subjects. DNA was extracted, and the V3-V4 region of the 16S ribosomal RNA was sequenced for microbiome analysis. Alpha diversity, beta diversity, linear discriminant analysis effect size (LEfSe), and network analysis were employed to compare the characteristics of the microbiomes. RESULTS We observed significant differences in beta diversity among the samples. Upon analyzing the significant taxa using LEfSe, the microbial composition of the implant-abutment screw hole's microbiome was found to be similar to that of the other sampling sites' microbiomes. Moreover, the microbiome network analysis revealed a unique network complexity in samples obtained from the implant screw hole compared to those from the other sampling sites. CONCLUSIONS The bacterial composition of the biofilm collected from the implant-abutment screw hole exhibited significant differences compared to the supra-structure of the implant. Therefore, long-term monitoring and management of not only the peri-implant tissue but also the implant screw are necessary.
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Affiliation(s)
- MinKee Son
- Department of Oral Microbiology, School of Dentistry, Pusan National University, Yangsan, Korea
| | - Yuri Song
- Department of Oral Microbiology, School of Dentistry, Pusan National University, Yangsan, Korea
- Oral Genomics Research Center, Pusan National University, Yangsan, Korea
| | - Yeuni Yu
- Interdisciplinary Program of Genomic Science, Pusan National University, Yangsan, Korea
- Department of Biomedical Informatics, School of Medicine, Pusan National University, Busan, Korea
| | - Si Yeong Kim
- Department of Oral Microbiology, School of Dentistry, Pusan National University, Yangsan, Korea
- Dental Research Institute, BK21 PLUS Project, School of Dentistry, Pusan National University, Yangsan, Korea
| | - Jung-Bo Huh
- Dental Research Institute, BK21 PLUS Project, School of Dentistry, Pusan National University, Yangsan, Korea
- Department of Prosthodontics, School of Dentistry, Pusan National University, Yangsan, Korea
| | - Eun-Bin Bae
- Dental Research Institute, BK21 PLUS Project, School of Dentistry, Pusan National University, Yangsan, Korea
- Department of Prosthodontics, School of Dentistry, Pusan National University, Yangsan, Korea
| | - Won-Tak Cho
- Dental Research Institute, BK21 PLUS Project, School of Dentistry, Pusan National University, Yangsan, Korea
- Department of Prosthodontics, School of Dentistry, Pusan National University, Yangsan, Korea
| | - Hee Sam Na
- Department of Oral Microbiology, School of Dentistry, Pusan National University, Yangsan, Korea
- Oral Genomics Research Center, Pusan National University, Yangsan, Korea
- Dental Research Institute, BK21 PLUS Project, School of Dentistry, Pusan National University, Yangsan, Korea
| | - Jin Chung
- Department of Oral Microbiology, School of Dentistry, Pusan National University, Yangsan, Korea
- Oral Genomics Research Center, Pusan National University, Yangsan, Korea
- Dental Research Institute, BK21 PLUS Project, School of Dentistry, Pusan National University, Yangsan, Korea.
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Hernández-Venegas PA, Martínez-Martínez RE, Zaragoza-Contreras EA, Domínguez-Pérez RA, Reyes-López SY, Donohue-Cornejo A, Cuevas-González JC, Molina-Frechero N, Espinosa-Cristóbal LF. Bactericidal Activity of Silver Nanoparticles on Oral Biofilms Related to Patients with and without Periodontal Disease. J Funct Biomater 2023; 14:311. [PMID: 37367275 DOI: 10.3390/jfb14060311] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2023] [Revised: 05/24/2023] [Accepted: 05/30/2023] [Indexed: 06/28/2023] Open
Abstract
BACKGROUND AND OBJECTIVES Periodontal disease (PD) is a multifactorial oral disease regularly caused by bacterial biofilms. Silver nanoparticles (AgNP) have offered good antimicrobial activity; moreover, there is no available scientific information related to their antimicrobial effects in biofilms from patients with PD. This study reports the bactericidal activity of AgNP against oral biofilms related to PD. MATERIALS AND METHODS AgNP of two average particle sizes were prepared and characterized. Sixty biofilms were collected from patients with (30 subjects) and without PD (30 subjects). Minimal inhibitory concentrations of AgNP were calculated and the distribution of bacterial species was defined by polymerase chain reaction. RESULTS Well-dispersed sizes of AgNP were obtained (5.4 ± 1.3 and 17.5 ± 3.4 nm) with an adequate electrical stability (-38.2 ± 5.8 and -32.6 ± 5.4 mV, respectively). AgNP showed antimicrobial activities for all oral samples; however, the smaller AgNP had significantly the most increased bactericidal effects (71.7 ± 39.1 µg/mL). The most resistant bacteria were found in biofilms from PD subjects (p < 0.05). P. gingivalis, T. denticola, and T. forsythia were present in all PD biofilms (100%). CONCLUSIONS The AgNP showed efficient bactericidal properties as an alternative therapy for the control or progression of PD.
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Affiliation(s)
- Perla Alejandra Hernández-Venegas
- Chemical Biological Department, Institute of Biomedical Sciences, Autonomous University of Juarez City (UACJ), Envolvente del PRONAF and Estocolmo s/n, Ciudad Juárez 32310, Chihuahua, Mexico
| | - Rita Elizabeth Martínez-Martínez
- Master Program in Advanced Dentistry, Faculty of Dentistry, Autonomous University of San Luis Potosi, Manuel Nava Avenue, Universitary Campus, San Luis Potosí 78290, San Luis Potosi, Mexico
| | - Erasto Armando Zaragoza-Contreras
- Department of Engineering and Materials Chemistry, Centro de Investigación en Materiales Avanzados, S. C., Miguel de Cervantes No. 120, Chihuahua 31109, Chihuahua, Mexico
| | - Rubén Abraham Domínguez-Pérez
- Laboratory of Multidisciplinary Dental Research, Faculty of Medicine, Autonomous University of Queretaro, Clavel Street, Prados de La Capilla, Santiago de Querétaro 76176, Queretaro, Mexico
| | - Simón Yobanny Reyes-López
- Institute of Biomedical Sciences, Autonomous University of Juarez City (UACJ), Envolvente del PRONAF and Estocolmo s/n, Ciudad Juárez 32310, Chihuahua, Mexico
| | - Alejandro Donohue-Cornejo
- Master Program in Dental Sciences, Stomatology Department, Institute of Biomedical Sciences, Autonomous University of Juarez City (UACJ), Envolvente del PRONAF and Estocolmo s/n, Ciudad Juárez 32310, Chihuahua, Mexico
| | - Juan Carlos Cuevas-González
- Master Program in Dental Sciences, Stomatology Department, Institute of Biomedical Sciences, Autonomous University of Juarez City (UACJ), Envolvente del PRONAF and Estocolmo s/n, Ciudad Juárez 32310, Chihuahua, Mexico
| | - Nelly Molina-Frechero
- Division of Biological and Health Sciences, Autonomous Metropolitan University Xochimilco (UAM), Mexico City 04960, Mexico
| | - León Francisco Espinosa-Cristóbal
- Master Program in Dental Sciences, Stomatology Department, Institute of Biomedical Sciences, Autonomous University of Juarez City (UACJ), Envolvente del PRONAF and Estocolmo s/n, Ciudad Juárez 32310, Chihuahua, Mexico
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87
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Miyai-Murai Y, Okamoto-Shibayama K, Sato T, Kikuchi Y, Kokubu E, Potempa J, Ishihara K. Localization and pathogenic role of the cysteine protease dentipain in Treponema denticola. Mol Oral Microbiol 2023; 38:212-223. [PMID: 36641800 PMCID: PMC10175099 DOI: 10.1111/omi.12406] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2022] [Revised: 12/14/2022] [Accepted: 01/05/2023] [Indexed: 01/16/2023]
Abstract
The Msp protein complex and the serine protease dentilisin are the best-characterized virulence factors in Treponema denticola, the major etiological agent of chronic periodontitis. In addition to these outer sheath factors, the cysteine protease dentipain contributes to pathogenicity, but its secretion, processing, cellular localization, and role in T. denticola virulence are not fully understood. In this study, we found that full-sized dentipain (74-kDa) and the 52-kDa truncated form of the enzyme are located, respectively, in the outer sheath derived from T. denticola dentilisin- and the Msp-deficient mutants. Furthermore, dentipain was barely detected in the wild-type strain. These results suggest that dentilisin and Msp, the major outer sheath proteins, are involved in the secretion and maturation of dentipain. Inactivation of the dentipain gene slowed the growth of T. denticola, and the effect was more profound in serum-free medium than in serum-containing medium. Several genes, including those encoding transporters and methyl-accepting chemotaxis proteins, were differentially expressed in the dentipain-deficient mutant. Furthermore, the mutant strain was more hydrophobic than the wild-type strain. Finally, the mutant showed less autoaggregation activity and adhesion to IgG in a serum-free medium than the wild-type strain. These findings suggest that dentipain contributes to the virulence of T. denticola by facilitating adhesion and acquisition of nutrients essential for colonization and proliferation in the gingival crevice under serum-rich conditions.
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Affiliation(s)
- Yuri Miyai-Murai
- Department of Crown and Bridge Prosthodontics, Tokyo Dental College, 2-9-18 Misaki-cho, Chiyoda-ku, Tokyo 101-0061, Japan
| | - Kazuko Okamoto-Shibayama
- Department of Microbiology, Tokyo Dental College, 2-1-14 Misaki-cho, Chiyoda-ku, Tokyo 101-0061, Japan
| | - Toru Sato
- Department of Crown and Bridge Prosthodontics, Tokyo Dental College, 2-9-18 Misaki-cho, Chiyoda-ku, Tokyo 101-0061, Japan
| | - Yuichiro Kikuchi
- Department of Microbiology, Tokyo Dental College, 2-1-14 Misaki-cho, Chiyoda-ku, Tokyo 101-0061, Japan
| | - Eitoyo Kokubu
- Department of Microbiology, Tokyo Dental College, 2-1-14 Misaki-cho, Chiyoda-ku, Tokyo 101-0061, Japan
| | - Jan Potempa
- Department of Microbiology, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, 30-387 Krakow, Poland and Department of Oral Immunity and Infectious Diseases, University of Louisville School of Dentistry, Louisville, KY 40202, USA
| | - Kazuyuki Ishihara
- Department of Microbiology, Tokyo Dental College, 2-1-14 Misaki-cho, Chiyoda-ku, Tokyo 101-0061, Japan
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88
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Lafaurie GI, Castillo DM, Iniesta M, Sanz M, Gómez LA, Castillo Y, Pianeta R, Delgadillo NA, Neuta Y, Diaz-Báez D, Herrera D. Differential analysis of culturable and unculturable subgingival target microorganisms according to the stages of periodontitis. Clin Oral Investig 2023; 27:3029-3043. [PMID: 36806930 PMCID: PMC10264511 DOI: 10.1007/s00784-023-04907-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2022] [Accepted: 02/03/2023] [Indexed: 02/21/2023]
Abstract
OBJECTIVES Culturable and unculturable microorganisms have been associated with periodontitis. Their differential proportions and composition have not been evaluated by their severity and complexity defined by stages in the 2018 AAP-EEP classification. METHODS One hundred eighty subgingival biofilm samples were collected in Spain and Colombia from subjects categorized as health/gingivitis: periodontitis stages I/II periodontitis stages III/IV. Target culturable microorganisms (Porphyromonas gingivalis, Aggregatibacter actinomycetemcomitans, Tannerella forsythia, Treponema denticola, and Eubacterium nodatum) and target unculturable microorganisms (Filifactor alocis, Eubacterium saphenum, Eubacterium brachy, Desulfobulbus oralis) were evaluated by quantitative PCR analysis. In addition, their differences and association with periodontal status were analyzed by ANCOVA and logistic regression models once adjusted to age, current smoking, and country. RESULTS P. gingivalis was significantly associated with periodontitis stages I/II, OR 2.44 (CI 95% 1.08-5.47) and stages III/V, OR 6.43 (CI 95% 2.43-16.9). T forsythia, OR 7.53 (CI 95% 2.07-27.4); D. oralis, OR 5.99 (CI 95% 2.71-13.23); F. alocis, OR 10.9 (CI 95% 4.56-23.2); E. brachy, 3.57 (CI 95% 1.40-9.11); and E. saphenum, 4.85 (CI 95% 1.99-11.7) were significantly associated only with stages III/IV periodontitis. P. gingivalis evidenced significant differences with the increase in the severity of the periodontal lesion: 2.97 colony forming unit (CFU)/μL (CI 95% 2.32-3.54) health/gingivitis, and 4.66 CFU/μL (CI 95% 4.03-5.30) and 5.90 CFU/μL (CI 95% 5.20-6.48) in stages I/II and III/IV respectively (p < 0.0001). Unculturable microorganisms only evidenced differences in concentration in stages III/IV compared with health-gingivitis (p ≤ 0.001). CONCLUSION Culturable and unculturable are strongly associated with stages III/IV periodontitis. Classic culturable microorganisms are more sensitive to differentiate between stages of periodontitis in the quantitative analysis. CLINICAL RELEVANCE Future interventional studies of periodontal disease should include Filifactor alocis, Eubacterium saphenum, Eubacterium brachy, and Desulfobulbus oralis as possible markers of therapy response and as indicators of progressive disease.
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Affiliation(s)
- Gloria Inés Lafaurie
- Unit of Basic Oral Investigation (UIBO), School of Dentistry, Universidad El Bosque, Ak. 9 #13, 1a-20 Bogotá, Colombia
| | - Diana Marcela Castillo
- Unit of Basic Oral Investigation (UIBO), School of Dentistry, Universidad El Bosque, Ak. 9 #13, 1a-20 Bogotá, Colombia
| | - Margarita Iniesta
- ETEP (Etiology and Therapy of Periodontal and Peri-Implant Diseases) Research Group, School of Dentistry, University Complutense of Madrid (UCM), Madrid, Spain
| | - Mariano Sanz
- ETEP (Etiology and Therapy of Periodontal and Peri-Implant Diseases) Research Group, School of Dentistry, University Complutense of Madrid (UCM), Madrid, Spain
| | - Luz Amparo Gómez
- Unit of Basic Oral Investigation (UIBO), School of Dentistry, Universidad El Bosque, Ak. 9 #13, 1a-20 Bogotá, Colombia
| | - Yormaris Castillo
- Unit of Basic Oral Investigation (UIBO), School of Dentistry, Universidad El Bosque, Ak. 9 #13, 1a-20 Bogotá, Colombia
| | - Roquelina Pianeta
- ETEP (Etiology and Therapy of Periodontal and Peri-Implant Diseases) Research Group, School of Dentistry, University Complutense of Madrid (UCM), Madrid, Spain
- School of Dentistry, Corporación Universitaria Rafael Núñez, Cartagena, Colombia
| | - Nathaly Andrea Delgadillo
- Unit of Basic Oral Investigation (UIBO), School of Dentistry, Universidad El Bosque, Ak. 9 #13, 1a-20 Bogotá, Colombia
| | - Yineth Neuta
- Unit of Basic Oral Investigation (UIBO), School of Dentistry, Universidad El Bosque, Ak. 9 #13, 1a-20 Bogotá, Colombia
| | - David Diaz-Báez
- Unit of Basic Oral Investigation (UIBO), School of Dentistry, Universidad El Bosque, Ak. 9 #13, 1a-20 Bogotá, Colombia
| | - David Herrera
- ETEP (Etiology and Therapy of Periodontal and Peri-Implant Diseases) Research Group, School of Dentistry, University Complutense of Madrid (UCM), Madrid, Spain
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89
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Veras EL, Castro dos Santos N, Souza JGS, Figueiredo LC, Retamal-Valdes B, Barão VAR, Shibli J, Bertolini M, Faveri M, Teles F, Duarte P, Feres M. Newly identified pathogens in periodontitis: evidence from an association and an elimination study. J Oral Microbiol 2023; 15:2213111. [PMID: 37261036 PMCID: PMC10228317 DOI: 10.1080/20002297.2023.2213111] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2022] [Revised: 05/05/2023] [Accepted: 05/08/2023] [Indexed: 06/02/2023] Open
Abstract
We assessed the level of evidence for the presence of new periodontal pathogens by (i) comparing the occurrence of non-classical periodontal taxa between healthy vs. periodontitis patients (Association study); (ii) assessing the modifications in the prevalence and levels of these species after treatments (Elimination study). In the Association study, we compared the prevalence and levels of 39 novel bacterial species between periodontally healthy and periodontitis patients. In the Elimination study, we analyzed samples from periodontitis patients assigned to receive scaling and root planing alone or with metronidazole+ amoxicillin TID/ 14 days. Levels of 79 bacterial species (39 novel and 40 classic) were assessed at baseline, 3 and 12 months post-therapy. All samples were analyzed using Checkerboard DNA-DNA hybridization. Out of the 39 novel species evaluated, eight were categorized as having strong and four as having moderate association with periodontitis. Our findings suggest strong evidence supporting Lancefieldella rimae, Cronobacter sakazakii, Pluralibacter gergoviae, Enterococcus faecalis, Eubacterium limosum, Filifactor alocis, Haemophilus influenzae, and Staphylococcus warneri, and moderate evidence supporting Escherichia coli, Fusobacterium necrophorum, Spiroplasma ixodetis, and Staphylococcus aureus as periodontal pathogens. These findings contribute to a better understanding of the etiology of periodontitis and may guide future diagnostic and interventional studies.
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Affiliation(s)
- Eduardo Lobão Veras
- Department of Periodontology, Dental Research Division, Guarulhos University, Guarulhos, SP, Brazil
| | - Nídia Castro dos Santos
- Department of Periodontology, Dental Research Division, Guarulhos University, Guarulhos, SP, Brazil
- The Forsyth Institute, Cambridge, MA, USA
| | - João Gabriel S. Souza
- Department of Periodontology, Dental Research Division, Guarulhos University, Guarulhos, SP, Brazil
- Department of Dental Research, Dental Science School (Faculdade de Ciências Odontológicas - FCO), Montes Claros, Brazil
| | - Luciene C. Figueiredo
- Department of Periodontology, Dental Research Division, Guarulhos University, Guarulhos, SP, Brazil
| | - Belen Retamal-Valdes
- Department of Periodontology, Dental Research Division, Guarulhos University, Guarulhos, SP, Brazil
| | - Valentim A. R. Barão
- Department of Prosthodontics and Periodontology, Piracicaba Dental School, University of Campinas (UNICAMP), Piracicaba, Brazil
| | - Jamil Shibli
- Department of Periodontology, Dental Research Division, Guarulhos University, Guarulhos, SP, Brazil
| | - Martinna Bertolini
- Department of Periodontics and Preventive Dentistry, School of Dental Medicine, University of Pittsburgh, Pittsburgh, PA, USA
| | - Marcelo Faveri
- Department of Periodontology, Dental Research Division, Guarulhos University, Guarulhos, SP, Brazil
| | - Flavia Teles
- Center for Innovation & Precision Dentistry, School of Dental Medicine, School of Engineering and Applied Sciences, University of Pennsylvania, Philadelphia, PA, USA
| | - Poliana Duarte
- Department of Periodontology, Dental Research Division, Guarulhos University, Guarulhos, SP, Brazil
| | - Magda Feres
- Department of Periodontology, Dental Research Division, Guarulhos University, Guarulhos, SP, Brazil
- Department of Oral Medicine, Infection and Immunity, Harvard School of Dental Medicine, Boston, MA, USA
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90
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Hajishengallis G. Illuminating the oral microbiome and its host interactions: animal models of disease. FEMS Microbiol Rev 2023; 47:fuad018. [PMID: 37113021 PMCID: PMC10198557 DOI: 10.1093/femsre/fuad018] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2022] [Revised: 04/24/2023] [Accepted: 04/26/2023] [Indexed: 04/29/2023] Open
Abstract
Periodontitis and caries are driven by complex interactions between the oral microbiome and host factors, i.e. inflammation and dietary sugars, respectively. Animal models have been instrumental in our mechanistic understanding of these oral diseases, although no single model can faithfully reproduce all aspects of a given human disease. This review discusses evidence that the utility of an animal model lies in its capacity to address a specific hypothesis and, therefore, different aspects of a disease can be investigated using distinct and complementary models. As in vitro systems cannot replicate the complexity of in vivo host-microbe interactions and human research is typically correlative, model organisms-their limitations notwithstanding-remain essential in proving causality, identifying therapeutic targets, and evaluating the safety and efficacy of novel treatments. To achieve broader and deeper insights into oral disease pathogenesis, animal model-derived findings can be synthesized with data from in vitro and clinical research. In the absence of better mechanistic alternatives, dismissal of animal models on fidelity issues would impede further progress to understand and treat oral disease.
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Affiliation(s)
- George Hajishengallis
- Department of Basic and Translational Sciences, Laboratory of Innate Immunity and Inflammation, School of Dental Medicine, University of Pennsylvania, 240 S. 40th Street, Philadelphia, PA 19104-6030, USA
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91
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Herrera BS, Henz SL, Dua S, Martin L, Teles RP, Patel M, Teles FRF. Pursuing new periodontal pathogens with an improved RNA-oligonucleotide quantification technique (ROQT). Arch Oral Biol 2023; 152:105721. [PMID: 37196563 DOI: 10.1016/j.archoralbio.2023.105721] [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: 03/02/2023] [Revised: 04/22/2023] [Accepted: 05/09/2023] [Indexed: 05/19/2023]
Abstract
OBJECTIVE The aim of this study was to optimize the sensitivity, specificity and cost-effectiveness of the RNA-Oligonucleotide Quantification Technique (ROQT) in order to identify periodontal pathogens that remain unrecognized or uncultured in the oral microbiome. DESIGN Total nucleic acids (TNA) were extracted from subgingival biofilm samples using an automated process. RNA, DNA and Locked Nucleic Acid (LNA) digoxigenin-labeled oligonucleotide probes targeting 5 cultivated/named species and 16 uncultivated or unnamed bacterial taxa were synthesized. Probe specificity was determined by targeting 96 oral bacterial species; sensitivity was assessed using serial dilutions of reference bacterial strains. Different stringency temperatures were compared and new standards were tested. The tested conditions were evaluated analyzing samples from periodontally healthy individuals, and patients with moderate or severe periodontitis. RESULTS The automated extraction method at 63⁰C along with LNA-oligunucleotides probes, and use of reverse RNA sequences for standards yielded stronger signals without cross-reactions. In the pilot clinical study, the most commonly detected uncultivated/unrecognized species were Selenomonas sp. HMT 134, Prevotella sp. HMT 306, Desulfobulbus sp. HMT 041, Synergistetes sp. HMT 360 and Bacteroidetes HMT 274. In the cultivated segment of the microbiota, the most abundant taxa were T. forsythia HMT 613 and Fretibacterium fastidiosum (formerly Synergistetes) HMT 363. CONCLUSIONS In general, samples from severe patients had the greatest levels of organisms. Classic (T. forsythia, P. gingivalis) and newly proposed (F. alocis and Desulfobulbus sp. HMT 041) pathogens were present in greater amounts in samples from severe periodontitis sites, followed by moderate periodontitis sites.
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Affiliation(s)
- Bruno S Herrera
- Department of Periodontology, Adams School of Dentistry, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Sandra L Henz
- Department of Periodontology, Adams School of Dentistry, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA; Department of Preventive and Social Dentistry, School of Dentistry, Federal University of Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Shawn Dua
- Department of Periodontology, Adams School of Dentistry, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Lynn Martin
- Department of Basic and Translational Sciences, University of Pennsylvania, School of Dental Medicine, Philadelphia, PA, USA
| | - Ricardo P Teles
- Department of Periodontics, University of Pennsylvania, School of Dental Medicine, Philadelphia, PA, USA
| | - Michele Patel
- Department of Applied Oral Sciences, The Forsyth Institute, Cambridge, MA, USA.
| | - Flavia R F Teles
- Department of Basic and Translational Sciences, University of Pennsylvania, School of Dental Medicine, Philadelphia, PA, USA
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92
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Liu J, Carmichael C, Hasturk H, Shi W, Bor B. Rapid specific detection of oral bacteria using Cas13-based SHERLOCK. J Oral Microbiol 2023; 15:2207336. [PMID: 37187674 PMCID: PMC10177689 DOI: 10.1080/20002297.2023.2207336] [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: 03/08/2023] [Revised: 04/18/2023] [Accepted: 04/21/2023] [Indexed: 05/17/2023] Open
Abstract
Decades of ongoing research has established that oral microbial communities play a role in oral diseases such as periodontitis and caries. Yet the detection of oral bacteria and the profiling of oral polymicrobial communities currently rely on methods that are costly, slow, and technically complex, such as qPCR or next-generation sequencing. For the widescale screening of oral microorganisms suitable for point-of-care settings, there exists the need for a low-cost, rapid detection technique. Here, we tailored the novel CRISPR-Cas-based assay SHERLOCK for the species-specific detection of oral bacteria. We developed a computational pipeline capable of generating constructs suitable for SHERLOCK and experimentally validated the detection of seven oral bacteria. We achieved detection within the single-molecule range that remained specific in the presence of off-target DNA found within saliva. Further, we adapted the assay for detecting target sequences directly from unprocessed saliva samples. The results of our detection, when tested on 30 healthy human saliva samples, fully aligned with 16S rRNA sequencing. Looking forward, this method of detecting oral bacteria is highly scalable and can be easily optimized for implementation at point-of-care settings.
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Affiliation(s)
- Jett Liu
- Department of Microbiology, The Forsyth Institute, Cambridge, MA, USA
| | - Camden Carmichael
- Department of Microbiology, The Forsyth Institute, Cambridge, MA, USA
| | - Hatice Hasturk
- Center for Clinical and Translational Research, The Forsyth Institute, Cambridge, MA, USA
| | - Wenyuan Shi
- Department of Microbiology, The Forsyth Institute, Cambridge, MA, USA
| | - Batbileg Bor
- Department of Microbiology, The Forsyth Institute, Cambridge, MA, USA
- Department of Oral Medicine, Infection and Immunity, Harvard School of Dental Medicine, Boston, MA, USA
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93
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Klapper M, Hübner A, Ibrahim A, Wasmuth I, Borry M, Haensch VG, Zhang S, Al-Jammal WK, Suma H, Fellows Yates JA, Frangenberg J, Velsko IM, Chowdhury S, Herbst R, Bratovanov EV, Dahse HM, Horch T, Hertweck C, González Morales MR, Straus LG, Vilotijevic I, Warinner C, Stallforth P. Natural products from reconstructed bacterial genomes of the Middle and Upper Paleolithic. Science 2023; 380:619-624. [PMID: 37141315 DOI: 10.1126/science.adf5300] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/06/2023]
Abstract
Major advances over the past decade in the field of ancient DNA are providing access to past paleogenomic diversity, but the diverse functions and biosynthetic capabilities of this growing paleome remain largely elusive. Here, we investigated the dental calculus of 12 Neanderthals and 52 anatomically modern humans spanning 100 kya to the present and reconstructed 459 bacterial metagenome-assembled genomes (MAGs). We identified a biosynthetic gene cluster (BGC) shared by seven Middle and Upper Paleolithic individuals that allows for the heterologous production of a class of previously unknown metabolites we name paleofurans. This paleobiotechnological approach demonstrates that viable biosynthetic machinery can be produced from the preserved genetic material of ancient organisms, allowing access to natural products from the Pleistocene and providing a promising area for natural product exploration.
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Affiliation(s)
- Martin Klapper
- Department of Paleobiotechnology, Leibniz Institute for Natural Product Research and Infection Biology, Hans Knöll Institute, 07745 Jena, Germany
| | - Alexander Hübner
- Department of Archaeogenetics, Max Planck Institute for Evolutionary Anthropology, 04103 Leipzig, Germany
- Associated Research Group of Archaeogenetics, Leibniz Institute for Natural Product Research and Infection Biology, Hans Knöll Institute, 07745 Jena, Germany
| | - Anan Ibrahim
- Department of Paleobiotechnology, Leibniz Institute for Natural Product Research and Infection Biology, Hans Knöll Institute, 07745 Jena, Germany
| | - Ina Wasmuth
- Department of Paleobiotechnology, Leibniz Institute for Natural Product Research and Infection Biology, Hans Knöll Institute, 07745 Jena, Germany
| | - Maxime Borry
- Department of Archaeogenetics, Max Planck Institute for Evolutionary Anthropology, 04103 Leipzig, Germany
| | - Veit G Haensch
- Department of Biomolecular Chemistry, Leibniz Institute for Natural Product Research and Infection Biology, Hans Knöll Institute, 07745 Jena, Germany
| | - Shuaibing Zhang
- Department of Paleobiotechnology, Leibniz Institute for Natural Product Research and Infection Biology, Hans Knöll Institute, 07745 Jena, Germany
| | - Walid K Al-Jammal
- Institute of Organic Chemistry and Macromolecular Chemistry, Friedrich Schiller University Jena, 07743 Jena, Germany
| | - Harikumar Suma
- Department of Paleobiotechnology, Leibniz Institute for Natural Product Research and Infection Biology, Hans Knöll Institute, 07745 Jena, Germany
| | - James A Fellows Yates
- Department of Paleobiotechnology, Leibniz Institute for Natural Product Research and Infection Biology, Hans Knöll Institute, 07745 Jena, Germany
- Department of Archaeogenetics, Max Planck Institute for Evolutionary Anthropology, 04103 Leipzig, Germany
- Associated Research Group of Archaeogenetics, Leibniz Institute for Natural Product Research and Infection Biology, Hans Knöll Institute, 07745 Jena, Germany
| | - Jasmin Frangenberg
- Department of Paleobiotechnology, Leibniz Institute for Natural Product Research and Infection Biology, Hans Knöll Institute, 07745 Jena, Germany
| | - Irina M Velsko
- Department of Archaeogenetics, Max Planck Institute for Evolutionary Anthropology, 04103 Leipzig, Germany
| | - Somak Chowdhury
- Department of Paleobiotechnology, Leibniz Institute for Natural Product Research and Infection Biology, Hans Knöll Institute, 07745 Jena, Germany
| | - Rosa Herbst
- Department of Paleobiotechnology, Leibniz Institute for Natural Product Research and Infection Biology, Hans Knöll Institute, 07745 Jena, Germany
| | - Evgeni V Bratovanov
- Department of Biomolecular Chemistry, Leibniz Institute for Natural Product Research and Infection Biology, Hans Knöll Institute, 07745 Jena, Germany
| | - Hans-Martin Dahse
- Department of Infection Biology, Leibniz Institute for Natural Product Research and Infection Biology, Hans Knöll Institute, 07745 Jena, Germany
| | - Therese Horch
- Department of Biomolecular Chemistry, Leibniz Institute for Natural Product Research and Infection Biology, Hans Knöll Institute, 07745 Jena, Germany
| | - Christian Hertweck
- Department of Biomolecular Chemistry, Leibniz Institute for Natural Product Research and Infection Biology, Hans Knöll Institute, 07745 Jena, Germany
- Faculty of Biological Sciences, Institute of Microbiology, Friedrich Schiller University Jena, 07743 Jena, Germany
| | - Manuel Ramon González Morales
- Instituto Internacional de Investigaciones Prehistóricas de Cantabria, Universidad de Cantabria, 39071 Santander, Spain
| | - Lawrence Guy Straus
- Department of Anthropology, University of New Mexico, Albuquerque, NM 87131, USA
- Grupo I+D+i EvoAdapta, Departmento de Ciencias Históricas, Universidad de Cantabria, 39005 Santander, Spain
| | - Ivan Vilotijevic
- Institute of Organic Chemistry and Macromolecular Chemistry, Friedrich Schiller University Jena, 07743 Jena, Germany
| | - Christina Warinner
- Department of Archaeogenetics, Max Planck Institute for Evolutionary Anthropology, 04103 Leipzig, Germany
- Associated Research Group of Archaeogenetics, Leibniz Institute for Natural Product Research and Infection Biology, Hans Knöll Institute, 07745 Jena, Germany
- Faculty of Biological Sciences, Institute of Microbiology, Friedrich Schiller University Jena, 07743 Jena, Germany
- Department of Anthropology, Harvard University, Cambridge, MA 02138, USA
| | - Pierre Stallforth
- Department of Paleobiotechnology, Leibniz Institute for Natural Product Research and Infection Biology, Hans Knöll Institute, 07745 Jena, Germany
- Institute of Organic Chemistry and Macromolecular Chemistry, Friedrich Schiller University Jena, 07743 Jena, Germany
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Chew RJJ, Tang YL, Lin XYS, Oh FJB, Sim RP, Anwar EJ, Preshaw PM, Tan KS. Toll-like receptor-4 activation by subgingival biofilm and periodontal treatment response. Clin Oral Investig 2023; 27:2139-2147. [PMID: 36719505 DOI: 10.1007/s00784-023-04877-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2022] [Accepted: 01/22/2023] [Indexed: 02/01/2023]
Abstract
OBJECTIVES This study aims to investigate longitudinally the activation of Toll-like receptor-4 (TLR-4) by subgingival biofilm samples before and after nonsurgical periodontal therapy (NSPT). MATERIALS AND METHODS Forty periodontitis patients received NSPT and were reviewed 3 and 6 months post-treatment. Subgingival biofilm was sampled from 4 teeth per patient, at baseline and each follow-up time point. TLR-4 activation was determined using the HEK-BLUE™/hTLR4 system. Changes in TLR-4 activation and probing pocket depths (PPDs) were evaluated using generalised linear models, and the association between TLR-4 activation and pocket reduction (defined as 6-month PPDs ≤ 3mm) was determined using generalised estimating equations. RESULTS At 6 months, the mean TLR-4 activation by subgingival biofilm samples was significantly reduced from 11.2AU (95%CI 7.1AU, 15.4AU) to 3.6AU (95%CI 2.3AU, 4.8AU, p < 0.001), paralleling significant reductions in mean PPDs at sampled sites. The response to NSPT was associated with longitudinal TLR-4 activation profiles, with significantly higher TLR-4 activation by subgingival biofilm obtained from sites that did not achieve pocket reduction, compared to sites at which pocket reduction was achieved. CONCLUSIONS The activation of TLR-4 by subgingival biofilm samples was reduced after NSPT, and this reduction was significantly associated with the clinical improvements (PPD reductions) at sampled sites. CLINICAL RELEVANCE This study demonstrated an association between the longitudinal profile of TLR-4 activation by subgingival biofilm and periodontal treatment response. Longitudinal monitoring of TLR-4 activation by subgingival biofilm may potentially identify non-responsive sites, enabling targeted additional treatment.
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Affiliation(s)
- Ren Jie Jacob Chew
- Faculty of Dentistry, National University of Singapore, 9 Lower Kent Ridge Road, Singapore, 119085, Singapore
| | - Yi Ling Tang
- Faculty of Dentistry, National University of Singapore, 9 Lower Kent Ridge Road, Singapore, 119085, Singapore
| | - Xin Yi Sheena Lin
- Faculty of Dentistry, National University of Singapore, 9 Lower Kent Ridge Road, Singapore, 119085, Singapore
| | - Feng Jun Bryan Oh
- Faculty of Dentistry, National University of Singapore, 9 Lower Kent Ridge Road, Singapore, 119085, Singapore
| | - Ruiqi Paul Sim
- Faculty of Dentistry, National University of Singapore, 9 Lower Kent Ridge Road, Singapore, 119085, Singapore
| | - Erica Jade Anwar
- Faculty of Dentistry, National University of Singapore, 9 Lower Kent Ridge Road, Singapore, 119085, Singapore
| | - Philip M Preshaw
- School of Dentistry, University of Dundee, Park Place, Dundee, DD1 4HN, UK.
| | - Kai Soo Tan
- Faculty of Dentistry, National University of Singapore, 9 Lower Kent Ridge Road, Singapore, 119085, Singapore.
- Oral Care Health Innovations and Designs Singapore, National University of Singapore, 9 Lower Kent Ridge Road, Singapore, 119085, Singapore.
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95
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Zhang H, Qin L. Positive feedback loop between dietary nitrate intake and oral health. Nutr Res 2023; 115:1-12. [PMID: 37207592 DOI: 10.1016/j.nutres.2023.04.008] [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: 01/02/2023] [Revised: 04/12/2023] [Accepted: 04/22/2023] [Indexed: 05/21/2023]
Abstract
Nitrate was once thought to be an inert end-product of endothelial-derived nitric oxide (NO) heme oxidation; however, this view has been radically revised over the past few decades. Following the clarification of the nitrate-nitrite-NO pathway, accumulated evidence has shown that nitrate derived from the diet is a supplementary source of endogenous NO generation, playing important roles in a variety of pathological and physiological conditions. However, the beneficial effects of nitrate are closely related with oral health, and oral dysfunction has an adverse effect on nitrate metabolism and further impacts overall systemic health. Moreover, an interesting positive feedback loop has been identified between dietary nitrate intake and oral health. Dietary nitrate's beneficial effect on oral health may further improve its bioavailability and promote overall systemic well-being. This review aims to provide a detailed description of the functions of dietary nitrate, with an emphasis on the key role oral health plays in nitrate bioavailability. This review also provides recommendations for a new paradigm that includes nitrate therapy in the treatment of oral diseases.
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Affiliation(s)
- Haoyang Zhang
- Department of Oral and Maxillofacial & Head and Neck Oncology, Beijing Stomatological Hospital, Capital Medical University, Beijing, China
| | - Lizheng Qin
- Department of Oral and Maxillofacial & Head and Neck Oncology, Beijing Stomatological Hospital, Capital Medical University, Beijing, China.
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96
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Benjamin WJ, Wang K, Zarins K, Bellile E, Blostein F, Argirion I, Taylor JMG, D’Silva NJ, Chinn SB, Rifkin S, Sartor MA, Rozek LS. Oral Microbiome Community Composition in Head and Neck Squamous Cell Carcinoma. Cancers (Basel) 2023; 15:2549. [PMID: 37174014 PMCID: PMC10177240 DOI: 10.3390/cancers15092549] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2023] [Revised: 03/13/2023] [Accepted: 04/27/2023] [Indexed: 05/15/2023] Open
Abstract
The impact of the oral microbiome on head and neck cancer pathogenesis and outcomes requires further study. 16s rRNA was isolated and amplified from pre-treatment oral wash samples for 52 cases and 102 controls. The sequences were binned into operational taxonomic units (OTUs) at the genus level. Diversity metrics and significant associations between OTUs and case status were assessed. The samples were binned into community types using Dirichlet multinomial models, and survival outcomes were assessed by community type. Twelve OTUs from the phyla Firmicutes, Proteobacteria, and Acinetobacter were found to differ significantly between the cases and the controls. Beta-diversity was significantly higher between the cases than between the controls (p < 0.01). Two community types were identified based on the predominant sets of OTUs within our study population. The community type with a higher abundance of periodontitis-associated bacteria was more likely to be present in the cases (p < 0.01), in older patients (p < 0.01), and in smokers (p < 0.01). Significant differences between the cases and the controls in community type, beta-diversity, and OTUs indicate that the oral microbiome may play a role in HNSCC.
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Affiliation(s)
| | - Kai Wang
- Department of Computational Medicine and Bioinformatics, University of Michigan, Ann Arbor, MI 48109, USA
| | - Katherine Zarins
- Department of Environmental Health Sciences, University of Michigan, Ann Arbor, MI 48109, USA
| | - Emily Bellile
- Department of Biostatistics, University of Michigan, Ann Arbor, MI 48109, USA
| | - Freida Blostein
- Department of Epidemiology, University of Michigan, Ann Arbor, MI 48109, USA
| | - Ilona Argirion
- Division of Cancer Epidemiology and Genomics, National Cancer Institute, Bethesda, MA 20814, USA
| | - Jeremy M. G. Taylor
- Department of Biostatistics, University of Michigan, Ann Arbor, MI 48109, USA
| | - Nisha J. D’Silva
- Department of Periodontics and Oral Medicine, University of Michigan, Ann Arbor, MI 48109, USA
| | - Steven B. Chinn
- Department of Otolaryngology—Head and Neck Surgery, University of Michigan, Ann Arbor, MI 48109, USA
| | - Samara Rifkin
- Department of Gastroenterology, University of Michigan, Ann Arbor, MI 48109, USA
| | - Maureen A. Sartor
- Department of Computational Medicine and Bioinformatics, University of Michigan, Ann Arbor, MI 48109, USA
| | - Laura S. Rozek
- Medical Center Department of Oncology, Georgetown University, Washington, DC 20007, USA
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97
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Chih SM, Cheng CD, Chen SH, Sung CE, Huang RY, Cheng WC. The Impact of Smoking on Peri-implant Microbiota: A Systematic Review. J Dent 2023; 133:104525. [PMID: 37088258 DOI: 10.1016/j.jdent.2023.104525] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2023] [Revised: 04/06/2023] [Accepted: 04/18/2023] [Indexed: 04/25/2023] Open
Abstract
OBJECTIVES Peri-implantitis is associated with bacterial plaque biofilms and with patients who have a history of periodontitis. Smoking is a risk factor for periodontitis, but the relationship between smoking and peri-implantitis is unclear. The aim of this systematic review was to assess evidence ascertaining the relationship between smoking and peri-implant microbiota. DATA SOURCES An electronic search was conducted in the MEDLINE/PubMed, Embase and Scopus® databases in duplicate up to January 2023 without language restrictions. Studies were considered eligible for inclusion if they involved evaluation of the peri-implant microbiota of smokers and nonsmokers. Methodological quality was assessed with the adapted Newcastle-Ottawa scale. STUDY SELECTION Fourteen studies were identified for inclusion in the present study, and 85.7% of the studies were defined as medium to high methodological quality. Overall, the evidence presented in this review was limited to medium to high methodological quality. The data indicates that significantly higher frequencies of anaerobic pathogens are detectable in healthy peri-implant tissues of smokers. A lower diversity of microbiota was observed in healthy peri-implant sites of smokers. In the transition from clinically healthy to a diseased status, smoking shaped a reduced peri-implant microbiota by depleting commensal and enriching pathogenic species. CONCLUSIONS The composition of peri-implant microbiota may be influenced by smoking. More studies are needed to determine the impact of smoking on peri-implant microbiota. CLINICAL SIGNIFICANCE In the transition from clinically healthy to a diseased status, smoking shaped a reduced peri-implant microbiota by depleting commensal and enriching pathogenic species. The composition of peri-implant microbiota may be influenced by smoking.
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Affiliation(s)
- Shu-Mi Chih
- Department of Periodontology, School of Dentistry, Tri-Service General Hospital and National Defense Medical Center, Taipei, Taiwan; Graduate Institute of Dental Science, National Defense Medical Center
| | - Chia-Dan Cheng
- Department of Periodontology, School of Dentistry, Tri-Service General Hospital and National Defense Medical Center, Taipei, Taiwan
| | - Siao-Han Chen
- Department of Periodontology, School of Dentistry, Tri-Service General Hospital and National Defense Medical Center, Taipei, Taiwan
| | - Cheng-En Sung
- Department of Periodontology, School of Dentistry, Tri-Service General Hospital and National Defense Medical Center, Taipei, Taiwan
| | - Ren-Yeong Huang
- Department of Periodontology, School of Dentistry, Tri-Service General Hospital and National Defense Medical Center, Taipei, Taiwan
| | - Wan-Chien Cheng
- Department of Periodontology, School of Dentistry, Tri-Service General Hospital and National Defense Medical Center, Taipei, Taiwan.
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98
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Adelfio M, Martin‐Moldes Z, Erndt‐Marino J, Tozzi L, Duncan MJ, Hasturk H, Kaplan DL, Ghezzi CE. Three-Dimensional Humanized Model of the Periodontal Gingival Pocket to Study Oral Microbiome. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2023; 10:e2205473. [PMID: 36825685 PMCID: PMC10131835 DOI: 10.1002/advs.202205473] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/21/2022] [Revised: 02/03/2023] [Indexed: 06/18/2023]
Abstract
The oral cavity contains distinct microenvironments that serve as oral barriers, such as the non-shedding surface of the teeth (e.g., enamel), the epithelial mucosa and gingival tissue (attached gingiva) where microbial communities coexist. The interactions and balances between these communities are responsible for oral tissue homeostasis or dysbiosis, that ultimately dictate health or disease. Disruption of this equilibrium can lead to chronic inflammation and permanent tissue damage in the case of chronic periodontitis. There are currently no experimental tissue models able to mimic the structural, physical, and metabolic conditions present in the human oral gingival tissue to support the long-term investigation of host-pathogens imbalances. Herein, the authors report an in vitro 3D anatomical gingival tissue model, fabricated from silk biopolymer by casting a replica mold of an adult human mandibular gingiva to recreate a tooth-gum unit. The model is based on human primary cultures that recapitulate physiological tissue organization, as well as a native oxygen gradient within the gingival pocket to support human subgingival plaque microbiome with a physiologically relevant level of microbial diversity up to 24 h. The modulation of inflammatory markers in the presence of oral microbiome indicates the humanized functional response of this model and establishes a new set of tools to investigate host-pathogen imbalances in gingivitis and periodontal diseases.
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Affiliation(s)
- Miryam Adelfio
- Department of Biomedical EngineeringUniversity of Massachusetts LowellLowellMA01854USA
| | | | | | - Lorenzo Tozzi
- Department of Biomedical EngineeringTufts UniversityMedfordMA02155USA
| | | | - Hatice Hasturk
- Center for Clinical and Translational ResearchThe Forsyth InstituteCambridgeMA02142USA
| | - David L. Kaplan
- Department of Biomedical EngineeringTufts UniversityMedfordMA02155USA
| | - Chiara E. Ghezzi
- Department of Biomedical EngineeringUniversity of Massachusetts LowellLowellMA01854USA
- Department of Biomedical EngineeringTufts UniversityMedfordMA02155USA
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99
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Krajewski A, Perussolo J, Gkranias N, Donos N. Influence of periodontal surgery on the subgingival microbiome-A systematic review and meta-analysis. J Periodontal Res 2023; 58:308-324. [PMID: 36597817 DOI: 10.1111/jre.13092] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2022] [Revised: 10/10/2022] [Accepted: 12/12/2022] [Indexed: 01/05/2023]
Abstract
OBJECTIVE The objective of this systematic review and meta-analysis was to evaluate the effect of periodontal surgery on the subgingival microbiome. BACKGROUND Periodontitis is a chronic inflammation of the tooth supporting tissues caused by the dysbiosis of the subgingival biofilm. It is managed through different non-surgical and surgical treatment modalities. Recent EFP S3 guidelines recommended performing periodontal surgery as part of Step 3 periodontitis treatment after Step 1 and Step 2 periodontal therapy, with the aim to achieve pocket closure of persisting sites. Changes in the sub-gingival microbiome may explain the treatment outcomes observed at different time points. Various microbiological detection techniques for disease-associated pathogens have been evolved over time and have been described in the literature. However, the impact of different types of periodontal surgery on the subgingival microbiome remains unclear. METHODS A systematic literature search was conducted in Medline, Embase, LILACS and Cochrane Library supplemented by manual search (23DEC2019, updated 21APR2022). RESULTS From an initial search of 3046 studies, 28 were included according to our specific inclusion criteria. Seven microbiological detection techniques were used to analyse disease-associated species in subgingival plaque samples: optical microscope, culture, polymerase chain reaction (PCR), checkerboard, enzymatic reactions, immunofluorescence and 16S gene sequencing. The included studies exhibited differences in various aspects of their methodologies such as subgingival plaque sample collection or treatment modalities. Clinical data showed a significant decrease in probing pocket depths (PPD) and clinical attachment loss (CAL) after periodontal surgery. Microbiological findings were overall heterogeneous. Meta-analysis was performed on a sub-cohort of studies all using checkerboard as a microbiological detection technique. Random effect models for Treponema denticola (T. denticola), Porphyromonas gingivalis (P. gingivalis) and Tannerella forsythia (T. forsythia) did not show a significant effect on mean counts 3 months after periodontal surgery. Notably, Aggregatibacter actinomycetemcomitans (A. actinomycetemcomitans) showed a significant increase 3 months after periodontal surgery. 16S gene sequencing was used in one included study and reported a decrease in disease-associated species with an increase in health-associated species after periodontal surgery at 3 and 6 months. CONCLUSION This systematic review has shown that the effect of periodontal surgery on the changes in subgingival microbiome is heterogeneous and may not always be associated with a decrease in disease-associated species. The variability could be attributed to the microbiological techniques employed for the analysis. Therefore, there is a need for well-designed and adequately powered studies to understand how periodontal surgery influences the subgingival microbiome and how the individual's microbiome affects treatment outcomes after periodontal surgery.
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Affiliation(s)
- Anna Krajewski
- Centre for Oral Clinical Research, Institute of Dentistry, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, London, UK
| | - Jeniffer Perussolo
- Centre for Oral Clinical Research, Institute of Dentistry, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, London, UK
| | - Nikolaos Gkranias
- Centre for Oral Clinical Research, Institute of Dentistry, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, London, UK
| | - Nikos Donos
- Centre for Oral Clinical Research, Institute of Dentistry, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, London, UK
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100
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Higashi DL, Krieger MC, Qin H, Zou Z, Palmer EA, Kreth J, Merritt J. Who is in the driver's seat? Parvimonas micra: An understudied pathobiont at the crossroads of dysbiotic disease and cancer. ENVIRONMENTAL MICROBIOLOGY REPORTS 2023. [PMID: 36999244 DOI: 10.1111/1758-2229.13153] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/02/2022] [Accepted: 02/24/2023] [Indexed: 06/19/2023]
Abstract
Recent advances in our understanding of microbiome composition at sites of inflammatory dysbiosis have triggered a substantial interest in a variety of historically understudied bacteria, especially among fastidious obligate anaerobes. A plethora of new evidence suggests that these microbes play outsized roles in establishing synergistic polymicrobial infections at many different sites in the human body. Parvimonas micra is a prime example of such an organism. Despite being almost completely uncharacterized at the genetic level, it is one of the few species commonly detected in abundance at multiple mucosal sites experiencing either chronic or acute inflammatory diseases, and more recently, it has been proposed as a discriminating biomarker for multiple types of malignancies. In the absence of disease, P. micra is commonly found in low abundance, typically residing within the oral cavity and gastrointestinal tract. P. micra exhibits the typical features of an inflammophilic organism, meaning its growth actually benefits from active inflammation and inflammatory tissue destruction. In this mini-review, we will describe our current understanding of this underappreciated but ubiquitous pathobiont, specifically focusing upon the role of P. micra in polymicrobial inflammatory dysbiosis and cancer as well as the key emerging questions regarding its pathobiology. Through this timely work, we highlight Parvimonas micra as a significant driver of disease and discuss its unique position at the crossroads of dysbiosis and cancer.
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Affiliation(s)
- Dustin L Higashi
- Department of Restorative Dentistry, Oregon Health and Science University, Portland, Oregon, USA
| | - Madeline C Krieger
- Department of Restorative Dentistry, Oregon Health and Science University, Portland, Oregon, USA
| | - Hua Qin
- Department of Restorative Dentistry, Oregon Health and Science University, Portland, Oregon, USA
| | - Zhengzhong Zou
- Department of Restorative Dentistry, Oregon Health and Science University, Portland, Oregon, USA
| | - Elizabeth A Palmer
- Department of Pediatric Dentistry, Oregon Health and Science University, Portland, Oregon, USA
| | - Jens Kreth
- Department of Restorative Dentistry, Oregon Health and Science University, Portland, Oregon, USA
- Department of Molecular Microbiology and Immunology, Oregon Health and Science University, Portland, Oregon, USA
| | - Justin Merritt
- Department of Restorative Dentistry, Oregon Health and Science University, Portland, Oregon, USA
- Department of Molecular Microbiology and Immunology, Oregon Health and Science University, Portland, Oregon, USA
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