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Laumen JGE, Van Dijck C, Manoharan-Basil SS, de Block T, Abdellati S, Xavier BB, Malhotra-Kumar S, Kenyon C. The effect of daily usage of Listerine Cool Mint mouthwash on the oropharyngeal microbiome: a substudy of the PReGo trial. J Med Microbiol 2024; 73. [PMID: 38833520 DOI: 10.1099/jmm.0.001830] [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] [Indexed: 06/06/2024] Open
Abstract
Introduction. ListerineÒ is a bactericidal mouthwash widely used to prevent oral health problems such as dental plaque and gingivitis. However, whether it promotes or undermines a healthy oral microbiome is unclear.Hypothesis/Gap Statement. We hypothesized that the daily use of Listerine Cool Mint would have a significant impact on the oropharyngeal microbiome.Aim. We aimed to assess if daily usage of Listerine Cool Mint influenced the composition of the pharyngeal microbiome.Methodology. The current microbiome substudy is part of the Preventing Resistance in Gonorrhoea trial. This was a double-blind single-centre, crossover, randomized controlled trial of antibacterial versus placebo mouthwash to reduce the incidence of gonorrhoea/chlamydia/syphilis in men who have sex with men (MSM) taking HIV pre-exposure prophylaxis (PrEP). Fifty-nine MSM taking HIV PrEP were enrolled. In this crossover trial, participants received 3 months of daily Listerine followed by 3 months of placebo mouthwash or vice versa. Oropharyngeal swabs were taken at baseline and after 3 months use of each mouthwash. DNA was extracted for shotgun metagenomic sequencing (Illumina Inc.). Non-host reads were taxonomically classified with MiniKraken and Bracken. The alpha and beta diversity indices were compared between baseline and after each mouthwash use. Differentially abundant bacterial taxa were identified using ANOVA-like differential expression analysis.Results. Streptococcus was the most abundant genus in most samples (n = 103, 61.7 %) with a median relative abundance of 31.5% (IQR 20.6-44.8), followed by Prevotella [13.5% (IQR 4.8-22.6)] and Veillonella [10.0% (IQR 4.0-16.8)]. Compared to baseline, the composition of the oral microbiome at the genus level (beta diversity) was significantly different after 3 months of Listerine (P = 0.006, pseudo-F = 2.29) or placebo (P = 0.003, pseudo-F = 2.49, permutational multivariate analysis of variance) use. Fusobacterium nucleatum and Streptococcus anginosus were significantly more abundant after Listerine use compared to baseline.Conclusion. Listerine use was associated with an increased abundance of common oral opportunistic bacteria previously reported to be enriched in periodontal diseases, oesophageal and colorectal cancer, and systemic diseases. These findings suggest that the regular use of Listerine mouthwash should be carefully considered.
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Affiliation(s)
- J G E Laumen
- Department of Clinical Sciences, Institute of Tropical Medicine, STI Unit, Antwerp, Belgium
- Laboratory of Medical Microbiology, Vaccine and Infectious Disease Institute, University of Antwerp, Antwerp, Belgium
| | - C Van Dijck
- Department of Clinical Sciences, Institute of Tropical Medicine, STI Unit, Antwerp, Belgium
- Laboratory of Medical Microbiology, Vaccine and Infectious Disease Institute, University of Antwerp, Antwerp, Belgium
| | - S S Manoharan-Basil
- Department of Clinical Sciences, Institute of Tropical Medicine, STI Unit, Antwerp, Belgium
| | - T de Block
- Department of Clinical Sciences, Clinical Reference Laboratory, Institute of Tropical Medicine, Antwerp, Belgium
| | - S Abdellati
- Department of Clinical Sciences, Clinical Reference Laboratory, Institute of Tropical Medicine, Antwerp, Belgium
| | - B B Xavier
- Laboratory of Medical Microbiology, Vaccine and Infectious Disease Institute, University of Antwerp, Antwerp, Belgium
| | - S Malhotra-Kumar
- Laboratory of Medical Microbiology, Vaccine and Infectious Disease Institute, University of Antwerp, Antwerp, Belgium
| | - C Kenyon
- Department of Clinical Sciences, Institute of Tropical Medicine, STI Unit, Antwerp, Belgium
- Department of Medicine, University of Cape Town, Cape Town, South Africa
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Amaechi BT, Mohseni S, Dillow AM, Abdul Azees PA, Movaghari Pour F, Kataoka Y, Restrepo MC. Investigation of the effects of Bipolar Radiofrequency Energy on the Structural Morphology of Dental Plaque. Eur J Dent 2024; 18:243-252. [PMID: 37172943 PMCID: PMC10959635 DOI: 10.1055/s-0043-1764427] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/15/2023] Open
Abstract
OBJECTIVES To investigate the effects of radiofrequency (RF) energy, applied through a power toothbrush, on the structural morphology of dental plaque and its bacteria components. Previous studies showed that a toothbrush powered by RF (ToothWave) effectively reduces extrinsic tooth stains, plaque, and calculus. However, the mechanism by which it reduces dental plaque deposits is not fully established. MATERIALS AND METHODS Multispecies plaques at sampling time points of 24, 48, and 72 hours were treated with the application of RF using ToothWave with the toothbrush bristles 1 mm above the plaque surface. Groups that underwent the same protocol but without RF treatment served as paired controls. Confocal laser scanning microscope (CLSM) was used to determine cell viability at each time point. Plaque morphology and bacteria ultrastructure were viewed using scanning electron microscope (SEM) and transmission electron microscope (TEM), respectively. STATISTICAL ANALYSIS Data were analyzed statistically using analysis of variance (ANOVA) and Bonferroni post-tests. RESULTS At each time, RF treatment significantly (p < 0.05) reduced the viable cells in plaque and caused a substantial disruption of plaque morphology, while the untreated plaque had intact morphology. Cells in treated plaques showed disrupted cell walls, cytoplasmic material, huge vacuoles, and heterogeneity in electron density, while these organelles remained intact in untreated plaques. CONCLUSION The application of RF via a power toothbrush can disrupt plaque morphology and kill bacteria. These effects were enhanced by the combined application of RF and toothpaste.
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Affiliation(s)
- Bennett T. Amaechi
- Department of Comprehensive Dentistry, School of Dentistry, University of Texas Health Science Center at San Antonio, San Antonio, Texas, United States
| | - Sahar Mohseni
- Department of Comprehensive Dentistry, School of Dentistry, University of Texas Health Science Center at San Antonio, San Antonio, Texas, United States
| | - Andrew M. Dillow
- Department of Comprehensive Dentistry, School of Dentistry, University of Texas Health Science Center at San Antonio, San Antonio, Texas, United States
| | - Parveez Ahamed Abdul Azees
- Department of Comprehensive Dentistry, School of Dentistry, University of Texas Health Science Center at San Antonio, San Antonio, Texas, United States
| | - Fatemeh Movaghari Pour
- Department of Comprehensive Dentistry, School of Dentistry, University of Texas Health Science Center at San Antonio, San Antonio, Texas, United States
| | - Yuko Kataoka
- Department of Comprehensive Dentistry, School of Dentistry, University of Texas Health Science Center at San Antonio, San Antonio, Texas, United States
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Stangvaltaite-Mouhat L, Skudutyte-Rysstad R, Ko H, Stankeviciene I, Aleksejuniene J, Puriene A. Co-occurrence of dental caries and periodontitis: multilevel modelling approach. BMC Oral Health 2024; 24:149. [PMID: 38297235 PMCID: PMC10832139 DOI: 10.1186/s12903-024-03918-2] [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: 06/08/2023] [Accepted: 01/19/2024] [Indexed: 02/02/2024] Open
Abstract
BACKGROUND Previous studies reported varyingly positive, negative, or no relationships between caries and periodontitis. Therefore, the aim was to assess the potential co-occurrence of caries experience and periodontal inflammation on the same teeth. METHODS This cross-sectional study used data from the Lithuanian National Oral Health Survey. The study included a stratified random sample of 1405 individuals aged 34-78, recruited from 5 Lithuanian cities and 10 peri-urban/rural areas (response rate 52%). Information about sociodemographic (age, sex, education, residence), behavioral (sugar-containing diet, tooth brushing frequency, use of interdental care products, last dental visit, smoking) and biological (systemic disease, use of medication and xerostomia) determinants was collected using the World Health Organization (WHO) Oral Health Questionnaire for Adults supplemented with additional questions. Clinical data were recorded using the WHO criteria and collected by one trained and calibrated examiner. Dental caries status was recorded as sound, decayed, missing, filled surfaces. Subsequently for the analyses, status was recorded at a tooth-level as decayed- and filled-teeth (DT and FT) including proximal, buccal, and oral surfaces. Two measures were used for periodontal status. The probing pocket depth (PPD) was measured at six sites and recorded at a tooth level into the absence of PPD or presence of PPD ≥ 4 mm. Bleeding on probing (BOP) was measured at the same six sites and was recorded as either present or absent at a tooth-level. Univariable and multivariable 2-level random intercept binary logistic regression analyses were utilized. RESULTS Positive associations were found between DT and BOP (OR 1.42, 95% CI 1.20-1.67), FT and BOP (OR 2.07, 95% CI 1.82-2.23), DT and PPD (OR 1.38, 95% CI 1.15-1.67) and FT and PPD (OR 2.01, 95% CI 1.83-2.20). CONCLUSIONS Our findings add evidence for the co-occurrence of periodontal inflammation and caries on the same teeth. This suggests the need for increased emphasis on a transdisciplinary approach in designing oral health interventions that target dental caries and periodontal disease simultaneously. In addition, longitudinal studies exploring the co-occurrence of caries and periodontal disease at the same sites, taking into consideration the levels of both conditions and genetic variation, are warranted.
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Affiliation(s)
- Lina Stangvaltaite-Mouhat
- Oral Health Centre of Expertise in Eastern Norway, Sørkedalsveien 10A, Oslo, 0369, Norway.
- Institute of Dentistry, Faculty of Medicine, Vilnius University, M. K. Čiurlionio 21, Vilnius, 03101, Lithuania.
| | - Rasa Skudutyte-Rysstad
- Oral Health Centre of Expertise in Eastern Norway, Sørkedalsveien 10A, Oslo, 0369, Norway
| | - Hayley Ko
- Oral Health Centre of Expertise in Eastern Norway, Sørkedalsveien 10A, Oslo, 0369, Norway
| | - Indre Stankeviciene
- Institute of Dentistry, Faculty of Medicine, Vilnius University, M. K. Čiurlionio 21, Vilnius, 03101, Lithuania
| | - Jolanta Aleksejuniene
- Department of Preventive and Community Dentistry, Faculty of Dentistry, The University of British Columbia, Vancouver, Canada
| | - Alina Puriene
- Institute of Dentistry, Faculty of Medicine, Vilnius University, M. K. Čiurlionio 21, Vilnius, 03101, Lithuania.
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Rosier BT, Johnston W, Carda-Diéguez M, Simpson A, Cabello-Yeves E, Piela K, Reilly R, Artacho A, Easton C, Burleigh M, Culshaw S, Mira A. Nitrate reduction capacity of the oral microbiota is impaired in periodontitis: potential implications for systemic nitric oxide availability. Int J Oral Sci 2024; 16:1. [PMID: 38177101 PMCID: PMC10767001 DOI: 10.1038/s41368-023-00266-9] [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: 08/11/2023] [Revised: 11/13/2023] [Accepted: 12/05/2023] [Indexed: 01/06/2024] Open
Abstract
The reduction of nitrate to nitrite by the oral microbiota has been proposed to be important for oral health and results in nitric oxide formation that can improve cardiometabolic conditions. Studies of bacterial composition in subgingival plaque suggest that nitrate-reducing bacteria are associated with periodontal health, but the impact of periodontitis on nitrate-reducing capacity (NRC) and, therefore, nitric oxide availability has not been evaluated. The current study aimed to evaluate how periodontitis affects the NRC of the oral microbiota. First, 16S rRNA sequencing data from five different countries were analyzed, revealing that nitrate-reducing bacteria were significantly lower in subgingival plaque of periodontitis patients compared with healthy individuals (P < 0.05 in all five datasets with n = 20-82 samples per dataset). Secondly, subgingival plaque, saliva, and plasma samples were obtained from 42 periodontitis patients before and after periodontal treatment. The oral NRC was determined in vitro by incubating saliva with 8 mmol/L nitrate (a concentration found in saliva after nitrate-rich vegetable intake) and compared with the NRC of 15 healthy individuals. Salivary NRC was found to be diminished in periodontal patients before treatment (P < 0.05) but recovered to healthy levels 90 days post-treatment. Additionally, the subgingival levels of nitrate-reducing bacteria increased after treatment and correlated negatively with periodontitis-associated bacteria (P < 0.01). No significant effect of periodontal treatment on the baseline saliva and plasma nitrate and nitrite levels was found, indicating that differences in the NRC may only be revealed after nitrate intake. Our results suggest that an impaired NRC in periodontitis could limit dietary nitrate-derived nitric oxide levels, and the effect on systemic health should be explored in future studies.
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Affiliation(s)
- Bob T Rosier
- Department of Genomics and Health, FISABIO Foundation, Center for Advanced Research in Public Health, Valencia, Spain
| | - William Johnston
- Department of Biological and Biomedical Sciences, Glasgow Caledonian University, Glasgow, UK
- Oral Sciences, University of Glasgow Dental School, School of Medicine, Dentistry and Nursing, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow, UK
| | - Miguel Carda-Diéguez
- Department of Genomics and Health, FISABIO Foundation, Center for Advanced Research in Public Health, Valencia, Spain
| | - Annabel Simpson
- Sport and Physical Activity Research Institute, University of the West of Scotland, Blantyre, Scotland
| | - Elena Cabello-Yeves
- Department of Genomics and Health, FISABIO Foundation, Center for Advanced Research in Public Health, Valencia, Spain
- Instituto de Biomedicina de Valencia, Consejo Superior de Investigaciones Científicas (IBV-CSIC), Valencia, Spain
| | - Krystyna Piela
- Oral Sciences, University of Glasgow Dental School, School of Medicine, Dentistry and Nursing, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow, UK
| | - Robert Reilly
- Oral Sciences, University of Glasgow Dental School, School of Medicine, Dentistry and Nursing, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow, UK
| | - Alejandro Artacho
- Department of Genomics and Health, FISABIO Foundation, Center for Advanced Research in Public Health, Valencia, Spain
| | - Chris Easton
- Sport and Physical Activity Research Institute, University of the West of Scotland, Blantyre, Scotland
| | - Mia Burleigh
- Sport and Physical Activity Research Institute, University of the West of Scotland, Blantyre, Scotland
| | - Shauna Culshaw
- Oral Sciences, University of Glasgow Dental School, School of Medicine, Dentistry and Nursing, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow, UK
| | - Alex Mira
- Department of Genomics and Health, FISABIO Foundation, Center for Advanced Research in Public Health, Valencia, Spain.
- CIBER Center for Epidemiology and Public Health, Madrid, Spain.
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Aghili S, Rahimi H, Hakim LK, Karami S, Soufdoost RS, Oskouei AB, Alam M, Badkoobeh A, Golkar M, Abbasi K, Heboyan A, Hosseini ZS. Interactions Between Oral Microbiota and Cancers in the Aging Community: A Narrative Review. Cancer Control 2024; 31:10732748241270553. [PMID: 39092988 DOI: 10.1177/10732748241270553] [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] [Indexed: 08/04/2024] Open
Abstract
The oral microbiome potentially wields significant influence in the development of cancer. Within the human oral cavity, an impressive diversity of more than 700 bacterial species resides, making it the second most varied microbiome in the body. This finely balanced oral microbiome ecosystem is vital for sustaining oral health. However, disruptions in this equilibrium, often brought about by dietary habits and inadequate oral hygiene, can result in various oral ailments like periodontitis, cavities, gingivitis, and even oral cancer. There is compelling evidence that the oral microbiome is linked to several types of cancer, including oral, pancreatic, colorectal, lung, gastric, and head and neck cancers. This review discussed the critical connections between cancer and members of the human oral microbiota. Extensive searches were conducted across the Web of Science, Scopus, and PubMed databases to provide an up-to-date overview of our understanding of the oral microbiota's role in various human cancers. By understanding the possible microbial origins of carcinogenesis, healthcare professionals can diagnose neoplastic diseases earlier and design treatments accordingly.
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Affiliation(s)
- Sara Aghili
- Student Research Committee, School of Dentistry, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Hussein Rahimi
- Student Research Committee, School of Dentistry, Bushehr University of Medical Sciences, Bushehr, Iran
| | | | | | | | - Asal Bagherzadeh Oskouei
- Dental Research Center, Research Institute of Dental Sciences, School of Dentistry, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Mostafa Alam
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Ashkan Badkoobeh
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Qom University of Medical Sciences, Qom, Iran
| | - Mohsen Golkar
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Kamyar Abbasi
- Department of Prosthodontics, School of Dentistry, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Artak Heboyan
- Department of Research Analytics, Saveetha Dental College and Hospitals, Saveetha Institute of Medical and Technical Sciences, Saveetha University, Chennai, India
- Department of Prosthodontics, Faculty of Stomatology, Yerevan State Medical University after Mkhitar Heratsi, Yerevan, Armenia
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Abdulkareem AA, Al-Taweel FB, Al-Sharqi AJ, Gul SS, Sha A, Chapple IL. Current concepts in the pathogenesis of periodontitis: from symbiosis to dysbiosis. J Oral Microbiol 2023; 15:2197779. [PMID: 37025387 PMCID: PMC10071981 DOI: 10.1080/20002297.2023.2197779] [Citation(s) in RCA: 24] [Impact Index Per Article: 24.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/05/2023] Open
Abstract
The primary etiological agent for the initiation and progression of periodontal disease is the dental plaque biofilm which is an organized aggregation of microorganisms residing within a complex intercellular matrix. The non-specific plaque hypothesis was the first attempt to explain the role of the dental biofilm in the pathogenesis of periodontal diseases. However, the introduction of sophisticated diagnostic and laboratory assays has led to the realisation that the development of periodontitis requires more than a mere increase in the biomass of dental plaque. Indeed, multispecies biofilms exhibit complex interactions between the bacteria and the host. In addition, not all resident microorganisms within the biofilm are pathogenic, since beneficial bacteria exist that serve to maintain a symbiotic relationship between the plaque microbiome and the host’s immune-inflammatory response, preventing the emergence of pathogenic microorganisms and the development of dysbiosis. This review aims to highlight the development and structure of the dental plaque biofilm and to explore current literature on the transition from a healthy (symbiotic) to a diseased (dysbiotic) biofilm in periodontitis and the associated immune-inflammatory responses that drive periodontal tissue destruction and form mechanistic pathways that impact other systemic non-communicable diseases.
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Affiliation(s)
- Ali A. Abdulkareem
- Department of Periodontics, College of Dentistry, University of Baghdad, Baghdad, Iraq
- CONTACT Ali A. Abdulkareem College of Dentistry, University of Baghdad, Baghdad, Iraq
| | - Firas B. Al-Taweel
- Department of Periodontics, College of Dentistry, University of Baghdad, Baghdad, Iraq
| | - Ali J.B. Al-Sharqi
- Department of Periodontics, College of Dentistry, University of Baghdad, Baghdad, Iraq
| | - Sarhang S. Gul
- College of Dentistry, University of Sulaimani, Sulaimani, Iraq
| | - Aram Sha
- College of Dentistry, University of Sulaimani, Sulaimani, Iraq
| | - Iain L.C. Chapple
- Periodontal Research Group, Institute of Clinical Sciences, College of Medical & Dental Sciences, University of Birmingham, Birmingham, UK
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Žiemytė M, Lopez-Roldan A, Carda-Diéguez M, Reglero-Santaolaya M, Rodriguez A, Ferrer MD, Mira A. Personalized antibiotic selection in periodontal treatment improves clinical and microbiological outputs. Front Cell Infect Microbiol 2023; 13:1307380. [PMID: 38179425 PMCID: PMC10765594 DOI: 10.3389/fcimb.2023.1307380] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2023] [Accepted: 11/29/2023] [Indexed: 01/06/2024] Open
Abstract
Introduction Periodontitis is a biofilm-mediated disease that is usually treated by non-surgical biofilm elimination with or without antibiotics. Antibiotic treatment in periodontal patients is typically selected empirically or using qPCR or DNA hybridization methods. These approaches are directed towards establishing the levels of different periodontal pathogens in periodontal pockets to infer the antibiotic treatment. However, current methods are costly and do not consider the antibiotic susceptibility of the whole subgingival biofilm. Methods In the current manuscript, we have developed a method to culture subgingival samples ex vivo in a fast, label-free impedance-based system where biofilm growth is monitored in real-time under exposure to different antibiotics, producing results in 4 hours. To test its efficacy, we performed a double-blind, randomized clinical trial where patients were treated with an antibiotic either selected by the hybridization method (n=32) or by the one with the best effect in the ex vivo growth system (n=32). Results Antibiotic selection was different in over 80% of the cases. Clinical parameters such as periodontal pocket depth, attachment level, and bleeding upon probing improved in both groups. However, dental plaque was significantly reduced only in the group where antibiotics were selected according to the ex vivo growth. In addition, 16S rRNA sequencing showed a larger reduction in periodontal pathogens and a larger increase in health-associated bacteria in the ex vivo growth group. Discussion The results of clinical and microbiological parameters, together with the reduced cost and low analysis time, support the use of the impedance system for improved individualized antibiotic selection.
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Affiliation(s)
- Miglė Žiemytė
- Genomics & Health Department, Foundation for the Promotion of Health and Biomedical Research of the Valencian Community (FISABIO) Foundation, Valencia, Spain
| | - Andrés Lopez-Roldan
- Department of Stomatology, Faculty of Medicine and Dentistry, University of Valencia, Valencia, Spain
| | - Miguel Carda-Diéguez
- Genomics & Health Department, Foundation for the Promotion of Health and Biomedical Research of the Valencian Community (FISABIO) Foundation, Valencia, Spain
| | - Marta Reglero-Santaolaya
- Department of Stomatology, Faculty of Medicine and Dentistry, University of Valencia, Valencia, Spain
| | - Ana Rodriguez
- Department of Stomatology, Faculty of Medicine and Dentistry, University of Valencia, Valencia, Spain
| | - María D. Ferrer
- Genomics & Health Department, Foundation for the Promotion of Health and Biomedical Research of the Valencian Community (FISABIO) Foundation, Valencia, Spain
| | - Alex Mira
- Genomics & Health Department, Foundation for the Promotion of Health and Biomedical Research of the Valencian Community (FISABIO) Foundation, Valencia, Spain
- School of Health and Welfare, Jönköping University, Jönköping, Sweden
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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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Zhang M, Tang H, Yuan Y, Ou Z, Chen Z, Xu Y, Fu X, Zhao Z, Sun Y. The Role of Indoor Microbiome and Metabolites in Shaping Children's Nasal and Oral Microbiota: A Pilot Multi-Omic Analysis. Metabolites 2023; 13:1040. [PMID: 37887365 PMCID: PMC10608577 DOI: 10.3390/metabo13101040] [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: 08/31/2023] [Revised: 09/21/2023] [Accepted: 09/27/2023] [Indexed: 10/28/2023] Open
Abstract
Maintaining a diverse and well-balanced nasal and oral microbiota is vital for human health. However, the impact of indoor microbiome and metabolites on nasal and oral microbiota remains largely unknown. Fifty-six children in Shanghai were surveyed to complete a questionnaire about their personal and environmental characteristics. The indoor microbiome and metabolites from vacuumed indoor dust were profiled via shotgun metagenomics and untargeted liquid chromatography-mass spectrometry (LC-MS). The nasal and oral microbiota in children was characterized using full-length 16S rRNA sequencing from PacBio. Associations between personal/environmental characteristics and the nasal/oral microbiota were calculated using PERMANOVA and regression analyses. We identified 6247, 431, and 342 microbial species in the indoor dust, nasal, and oral cavities, respectively. The overall nasal and oral microbial composition showed significant associations with environmental tobacco smoke (ETS) exposure during pregnancy and early childhood (p = 0.005 and 0.03, respectively), and the abundance of total indoor flavonoids and two mycotoxins (deoxynivalenol and nivalenol) (p = 0.01, 0.02, and 0.03, respectively). Notably, the abundance of several flavonoids, such as baicalein, eupatilin, isoliquiritigenin, tangeritin, and hesperidin, showed positive correlations with alpha diversity and the abundance of protective microbial taxa in nasal and oral cavities (p < 0.02), suggesting their potential beneficial roles in promoting nasal/oral health. Conversely, high carbohydrate/fat food intake and ETS exposure diminished protective microorganisms while augmenting risky microorganisms in the nasal/oral cavities. Further, potential microbial transfer was observed from the indoor environment to the childhood oral cavity (Moraxella catarrhalis, Streptococcus mitis, and Streptococcus salivarius), which could potentially increase virulence factors related to adherence and immune modulation and vancomycin resistance genes in children. This is the first study to reveal the association between the indoor microbiome/metabolites and nasal/oral microbiota using multi-omic approaches. These findings reveal potential protective and risk factors related to the indoor microbial environment.
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Affiliation(s)
- Mei Zhang
- Guangdong Provincial Key Laboratory of Protein Function and Regulation in Agricultural Organisms, College of Life Sciences, South China Agricultural University, Guangzhou 510642, China; (M.Z.); (Y.Y.); (Z.O.)
| | - Hao Tang
- School of Public Health, Fudan University, Shanghai 200032, China; (H.T.); (Y.X.)
| | - Yiwen Yuan
- Guangdong Provincial Key Laboratory of Protein Function and Regulation in Agricultural Organisms, College of Life Sciences, South China Agricultural University, Guangzhou 510642, China; (M.Z.); (Y.Y.); (Z.O.)
| | - Zheyuan Ou
- Guangdong Provincial Key Laboratory of Protein Function and Regulation in Agricultural Organisms, College of Life Sciences, South China Agricultural University, Guangzhou 510642, China; (M.Z.); (Y.Y.); (Z.O.)
| | - Zhuoru Chen
- Children’s Hospital of Fudan University, Shanghai 201102, China;
| | - Yanyi Xu
- School of Public Health, Fudan University, Shanghai 200032, China; (H.T.); (Y.X.)
| | - Xi Fu
- Guangdong Provincial Engineering Research Center of Public Health Detection and Assessment, School of Public Health, Guangdong Pharmaceutical University, Guangzhou 510006, China;
| | - Zhuohui Zhao
- School of Public Health, Fudan University, Shanghai 200032, China; (H.T.); (Y.X.)
- Key Laboratory of Public Health Safety of the Ministry of Education, NHC Key Laboratory of Health Technology Assessment (Fudan University), Shanghai Typhoon Institute/CMA, Shanghai Key Laboratory of Meteorology and Health, Shanghai 200030, China
| | - Yu Sun
- Guangdong Provincial Key Laboratory of Protein Function and Regulation in Agricultural Organisms, College of Life Sciences, South China Agricultural University, Guangzhou 510642, China; (M.Z.); (Y.Y.); (Z.O.)
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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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11
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Paszynska E, Gawriolek M, Hernik A, Otulakowska-Skrzynska J, Winiarska H, Springer D, Roszak M, Slebioda Z, Krahel A, Cofta S. Prevalence of oral complications in the course of severe SARS-CoV-2 infection under mechanical non-invasive ventilation. Eur J Med Res 2023; 28:293. [PMID: 37608339 PMCID: PMC10463896 DOI: 10.1186/s40001-023-01273-6] [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: 04/26/2023] [Accepted: 08/08/2023] [Indexed: 08/24/2023] Open
Abstract
BACKGROUND The management of oral health during severe symptoms of Covid-19 is still a challenge, especially in intensive care units under invasive/noninvasive ventilation in hospital. Understanding the cause-and-effect relationships may allow for individual adjustment of oral care recommendations during Covid-19 disease. The study's objective was to assess Covid-19 patients' oral health status under hospital treatment due to pulmonary adverse Covid-19 outcomes. MATERIAL AND METHODS Covid-19 patients (mean age 74.4 ± 15.4; n = 120, male n = 50/female n = 70) were admitted to hospital in the acute phase of Covid-19 between January and March 2022 who required oxygen therapy due to pneumonia, rapid respiratory failure, low saturation. Blood and radiological tests were taken according to National Health Fund guidelines. The condition of teeth (Decayed, Missing, Filled teeth as DMFT index), dental hygiene (Plaque Control Record as PCR index), periodontal status (probing depth PD, clinical attachment CAL, bleeding on probing BOP) and oral mucosa (BRUSHED and Beck scores) were examined. RESULTS Charateristics of the teeth (dental caries 35.2%, DMFT Median 22), plaque retention (83.4%), advanced periodontitis (48.3%), xerostomia (74.2%), oral mucosa inflammation (80.8%), angular cheilitis (53.3%), hemorrhagic (21.7%) showed a high incidence of harmful oral conditions. BRUSHED model and Beck score indicated moderate oral dysfunction and need for oral care every 8 h. Spearman's analysis revealed a significant positive correlation between pneumonia and neutrophile, interleukin-6 IL-6, C-reactive protein CRP (p = 0.01, p < 0.001, p < 0.001), negative to lymphocyte count (p < 0.001). Multiple and logistic regressions selected the following risk predictors for pneumonia as IL-6, CRP, obesity and for severe COVID-19 symptoms D-dimer level and a lack of targeted vaccination (p < 0.001). Among oral predictors, the PCR index and Beck score were significant for both outcomes (respectively p < 0.001, p < 0.012). Patients who received oxygen therapy with face masks had more often angular heilitis and debris (p = 0.025, p = 0.035). CONCLUSIONS COVID-19 hospitalised patients with severe symptoms crossing with poor oral health-related conditions. This may exacerbate a response for COVID infection, and play a role in cytokine storm. For Covid-19 management, to inhibit extraoral/intraoral complications, it is recommended to adjust oral hygiene procedures, including antibacterial, protective, moisturising agents after individual oral health assessment.
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Affiliation(s)
- Elzbieta Paszynska
- Department of Integrated Dentistry, Poznan University of Medical Sciences (PUMS), Bukowska st. 70, 60-812, Poznan, Poland.
| | - Maria Gawriolek
- Department of Integrated Dentistry, Poznan University of Medical Sciences (PUMS), Bukowska st. 70, 60-812, Poznan, Poland
| | - Amadeusz Hernik
- Department of Integrated Dentistry, Poznan University of Medical Sciences (PUMS), Bukowska st. 70, 60-812, Poznan, Poland
| | - Justyna Otulakowska-Skrzynska
- Department of Integrated Dentistry, Poznan University of Medical Sciences (PUMS), Bukowska st. 70, 60-812, Poznan, Poland
| | - Hanna Winiarska
- Department of Pulmonology, Allergology and Respiratory Oncology, Poznan University of Medical Sciences (PUMS), Szamarzewskiego 82/84, 60-569, Poznan, Poland
| | - Daria Springer
- Department of Pulmonology, Allergology and Respiratory Oncology, Poznan University of Medical Sciences (PUMS), Szamarzewskiego 82/84, 60-569, Poznan, Poland
| | - Magdalena Roszak
- Department of Computer Science and Statistics, Poznan University of Medical Sciences (PUMS), Rokietnicka st. 7, 60-806 Poznan, Poland
| | - Zuzanna Slebioda
- Department of Gerodontology and Oral Pathology, Poznan University of Medical Sciences, 60-812 Poznan, Bukowska st. 70, Poland
| | - Anna Krahel
- Department of Integrated Dentistry, Poznan University of Medical Sciences (PUMS), Bukowska st. 70, 60-812, Poznan, Poland
| | - Szczepan Cofta
- Department of Pulmonology, Allergology and Respiratory Oncology, Poznan University of Medical Sciences (PUMS), Szamarzewskiego 82/84, 60-569, Poznan, Poland
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12
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Zheng H, Zhou Y, Zheng Y, Liu G. Advances in hydrogels for the treatment of periodontitis. J Mater Chem B 2023; 11:7321-7333. [PMID: 37431231 DOI: 10.1039/d3tb00835e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/12/2023]
Abstract
Periodontitis is the second most prevalent oral disease and can cause serious harm to human health. Hydrogels are excellent biomaterials that can be used for periodontitis as drug delivery platforms to achieve inflammation control through high drug delivery efficiency and sustained drug release and as tissue scaffolds to achieve tissue remodelling through encapsulated cell wrapping and effective mass transfer. In this review, we summarize the latest advances in the treatment of periodontitis with hydrogels. The pathogenic mechanisms of periodontitis are introduced first, followed by the recent progress of hydrogels in controlling inflammation and tissue reconstruction, in which the specific performance of hydrogels is discussed in detail. Finally, the challenges and limitations of hydrogels for clinical applications in periodontitis are discussed and possible directions for development are proposed. This review aims to provide a reference for the design and fabrication of hydrogels for the treatment of periodontitis.
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Affiliation(s)
- Huiyu Zheng
- The State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute of Sichuan University, Chengdu 610065, China.
| | - Yuan Zhou
- The State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute of Sichuan University, Chengdu 610065, China.
| | - Yu Zheng
- The State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute of Sichuan University, Chengdu 610065, China.
| | - Guiting Liu
- The State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute of Sichuan University, Chengdu 610065, China.
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13
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Das A, Patro S, Simnani FZ, Singh D, Sinha A, Kumari K, Rao PV, Singh S, Kaushik NK, Panda PK, Suar M, Verma SK. Biofilm modifiers: The disparity in paradigm of oral biofilm ecosystem. Biomed Pharmacother 2023; 164:114966. [PMID: 37269809 DOI: 10.1016/j.biopha.2023.114966] [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: 03/14/2023] [Revised: 05/19/2023] [Accepted: 05/29/2023] [Indexed: 06/05/2023] Open
Abstract
A biofilm is a population of sessile microorganisms that has a distinct organized structure and characteristics like channels and projections. Good oral hygiene and reduction in the prevalence of periodontal diseases arise from minimal biofilm accumulation in the mouth, however, studies focusing on modifying the ecology of oral biofilms have not yet been consistently effective. The self-produced matrix of extracellular polymeric substances and greater antibiotic resistance make it difficult to target and eliminate biofilm infections, which lead to serious clinical consequences that are often lethal. Therefore, a better understanding is required to target and modify the ecology of biofilms in order to eradicate the infection, not only in instances of oral disorders but also in terms of nosocomial infections. The review focuses on several biofilm ecology modifiers to prevent biofilm infections, as well as the involvement of biofilm in antibiotic resistance, implants or in-dwelling device contamination, dental caries, and other periodontal disorders. It also discusses recent advances in nanotechnology that may lead to novel strategies for preventing and treating infections caused by biofilms as well as a novel outlook to infection control.
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Affiliation(s)
- Antarikshya Das
- KIIT School of Dental Sciences, KIIT University, Bhubaneswar 751024, Odisha, India
| | - Swadheena Patro
- KIIT School of Dental Sciences, KIIT University, Bhubaneswar 751024, Odisha, India.
| | | | - Dibyangshee Singh
- KIIT School of Biotechnology, KIIT University, Bhubaneswar 751024, Odisha, India
| | - Adrija Sinha
- KIIT School of Biotechnology, KIIT University, Bhubaneswar 751024, Odisha, India
| | - Khushbu Kumari
- KIIT School of Dental Sciences, KIIT University, Bhubaneswar 751024, Odisha, India
| | - Patnala Vedika Rao
- KIIT School of Medical Sciences, KIIT University, Bhubaneswar 751024, Odisha, India
| | - Sarita Singh
- BVG Life Sciences Limited, Sagar Complex, Old Pune-Mumbai Road, Chinchwad, Pune 411034, India
| | - Nagendra Kumar Kaushik
- Plasma Bioscience Research Center, Department of Electrical and Biological Physics, Kwangwoon University, 01897 Seoul, Republic of Korea.
| | - Pritam Kumar Panda
- Condensed Matter Theory Group, Materials Theory Division, Department of Physics and Astronomy, Uppsala University, Box 516, SE-751 20 Uppsala, Sweden.
| | - Mrutyunjay Suar
- KIIT School of Dental Sciences, KIIT University, Bhubaneswar 751024, Odisha, India.
| | - Suresh K Verma
- KIIT School of Dental Sciences, KIIT University, Bhubaneswar 751024, Odisha, India.
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14
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Treerat P, Anderson D, Giacaman RA, Merritt J, Kreth J. Glycerol metabolism supports oral commensal interactions. THE ISME JOURNAL 2023; 17:1116-1127. [PMID: 37169870 PMCID: PMC10284889 DOI: 10.1038/s41396-023-01426-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/08/2022] [Revised: 04/19/2023] [Accepted: 04/27/2023] [Indexed: 05/13/2023]
Abstract
During oral biofilm development, interspecies interactions drive species distribution and biofilm architecture. To understand what molecular mechanisms determine these interactions, we used information gained from recent biogeographical investigations demonstrating an association of corynebacteria with streptococci. We previously reported that Streptococcus sanguinis and Corynebacterium durum have a close relationship through the production of membrane vesicle and fatty acids leading to S. sanguinis chain elongation and overall increased fitness supporting their commensal state. Here we present the molecular mechanisms of this interspecies interaction. Coculture experiments for transcriptomic analysis identified several differentially expressed genes in S. sanguinis. Due to its connection to fatty acid synthesis, we focused on the glycerol-operon. We further explored the differentially expressed type IV pili genes due to their connection to motility and biofilm adhesion. Gene inactivation of the glycerol kinase glpK had a profound impact on the ability of S. sanguinis to metabolize C. durum secreted glycerol and impaired chain elongation important for their interaction. Investigations on the effect of type IV pili revealed a reduction of S. sanguinis twitching motility in the presence of C. durum, which was caused by a decrease in type IV pili abundance on the surface of S. sanguinis as determined by SEM. In conclusion, we identified that the ability to metabolize C. durum produced glycerol is crucial for the interaction of C. durum and S. sanguinis. Reduced twitching motility could lead to a closer interaction of both species, supporting niche development in the oral cavity and potentially shaping symbiotic health-associated biofilm communities.
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Affiliation(s)
- Puthayalai Treerat
- Department of Restorative Dentistry, School of Dentistry, Oregon Health & Science University (OHSU), Portland, OR, 97239, USA.
| | - David Anderson
- Department of Restorative Dentistry, School of Dentistry, Oregon Health & Science University (OHSU), Portland, OR, 97239, USA
| | - Rodrigo A Giacaman
- Cariology Unit, Department of Oral Rehabilitation, Faculty of Dentistry, University of Talca, Talca, Chile
| | - Justin Merritt
- Department of Restorative Dentistry, School of Dentistry, Oregon Health & Science University (OHSU), Portland, OR, 97239, USA
- Department of Molecular Microbiology and Immunology, School of Medicine, Oregon Health & Science University (OHSU), Portland, OR, 97239, USA
| | - Jens Kreth
- Department of Restorative Dentistry, School of Dentistry, Oregon Health & Science University (OHSU), Portland, OR, 97239, USA.
- Department of Molecular Microbiology and Immunology, School of Medicine, Oregon Health & Science University (OHSU), Portland, OR, 97239, USA.
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15
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Mubaraki H, Ingle NA, Baseer MA, AlMugeiren OM, Mubaraki S, Cicciù M, Minervini G. Effect of Silver Diamine Fluoride on Bacterial Biofilms-A Review including In Vitro and In Vivo Studies. Biomedicines 2023; 11:1641. [PMID: 37371736 DOI: 10.3390/biomedicines11061641] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2023] [Revised: 05/29/2023] [Accepted: 05/31/2023] [Indexed: 06/29/2023] Open
Abstract
Caries/carious lesions are a growing concern among the general population across the world, and different strategies are evolving to combat the bacterial invasion that resultantly leads to caries. In this systematic review, we are looking to analyse the role of silver diamine fluoride (SDF) on the growth of bacterial biofilms. The search strategy for the studies to be selected for the review was initiated by a search across multiple databases, which ultimately yielded 15 studies that were in accordance with our objectives. The reviewed articles indicate a very clear correlation between the usage of SDF and the decrease in bacterial biofilms, which are limited not just to one or two but multiple bacterial species. As shown by the events favoring SDF's odds ratio of 3.59 (with a 95% confidence interval of 2.13 to 6.05), a risk ratio of 1.63 (1.32 to 2.00), and a risk difference of 0.28 (0.16 to 0.40), there was strong evidence that SDF is a successful treatment for reducing bacterial biofilms in dental practice. This study offers substantial proof that SDF works well to reduce bacterial biofilms in dentistry practices. We advise further investigation to examine the potential of SDF as a standard therapy choice for dental caries and related conditions given the obvious relationship between the use of SDF and the reduction in bacterial biofilms.
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Affiliation(s)
- Hind Mubaraki
- Preventive Dentistry Department, College of Dentistry, Riyadh Elm University, Riyadh 13244, Saudi Arabia
| | - Navin Anand Ingle
- Preventive Dentistry Department, College of Dentistry, Riyadh Elm University, Riyadh 13244, Saudi Arabia
| | - Mohammad Abdul Baseer
- Preventive Dentistry Department, College of Dentistry, Riyadh Elm University, Riyadh 13244, Saudi Arabia
| | - Osamah M AlMugeiren
- Preventive Dentistry Department, College of Dentistry, Riyadh Elm University, Riyadh 13244, Saudi Arabia
| | - Sarah Mubaraki
- Preventive Dentistry Department, College of Dentistry, Riyadh Elm University, Riyadh 13244, Saudi Arabia
| | - Marco Cicciù
- Department of Biomedical and Surgical and Biomedical Sciences, Catania University, 95123 Catania, Italy
| | - Giuseppe Minervini
- Multidisciplinary Department of Medical-Surgical and Dental Specialties, University of Campania, 80138 Naples, Italy
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16
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Giacaman RA, Umaña R, Nuñez MJ, Díaz-Garrido N, Echeverría C, García-Manríquez N, Mira A, Fernández CE, Gambetta-Tessini K, Lozano CP. Saliva Decreases Sucrose-Induced Cariogenicity in an Experimental Biological Caries Model. Microorganisms 2023; 11:1426. [PMID: 37374928 DOI: 10.3390/microorganisms11061426] [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: 04/28/2023] [Revised: 05/23/2023] [Accepted: 05/25/2023] [Indexed: 06/29/2023] Open
Abstract
OBJECTIVE Whether a minimum quantity of saliva inhibit the caries process remains uncertain. This study aimed to investigate the impact of saliva dilutions on an in vitro caries model using Streptococcus mutans (S. mutans) biofilms. METHODS S. mutans biofilms were cultivated on enamel and root dentin slabs, in culture media containing different proportions of saliva (v/v): 0%, 5%, 10%, 25%, 50%, 75%, and 100% saliva, and exposed to a 10% sucrose solution (5 min, 3x/day), with appropriate controls. After 5 (enamel) and 4 (dentin) days, demineralization, biomass, viable bacteria, and polysaccharide formation were analyzed. The acidogenicity of the spent media was monitored overtime. Each assay was performed in triplicate across two independent experiments (n = 6). RESULTS In both enamel and dentin, an inverse relationship was observed between acidogenicity, demineralization, and the proportion of saliva. Even small quantities of saliva incorporated into the media led to a noticeable reduction in enamel and dentin demineralization. Saliva presence resulted in significant reductions in biomass, viable S. mutans cells, and polysaccharides, with the effects being concentration-dependent for both tissues. CONCLUSIONS High quantities of saliva can almost completely inhibit sucrose-induced cariogenicity, while even small amounts exhibit a dose-dependent caries-protective effect.
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Affiliation(s)
- Rodrigo A Giacaman
- Cariology Unit, Department of Oral Rehabilitation, Faculty of Dentistry, University of Talca, Talca 3462227, Chile
- Interuniversity Center for Healthy Aging, Consortium of Chilean State Universities, Chilecito 03825, Chile
| | - Rodrigo Umaña
- Cariology Unit, Department of Oral Rehabilitation, Faculty of Dentistry, University of Talca, Talca 3462227, Chile
| | - María José Nuñez
- Cariology Unit, Department of Oral Rehabilitation, Faculty of Dentistry, University of Talca, Talca 3462227, Chile
| | - Natalia Díaz-Garrido
- Cariology Unit, Department of Oral Rehabilitation, Faculty of Dentistry, University of Talca, Talca 3462227, Chile
| | - Constanza Echeverría
- Cariology Unit, Department of Oral Rehabilitation, Faculty of Dentistry, University of Talca, Talca 3462227, Chile
| | - Natalia García-Manríquez
- Cariology Unit, Department of Oral Rehabilitation, Faculty of Dentistry, University of Talca, Talca 3462227, Chile
| | - Alex Mira
- Genomics and Health Department, Foundation for the Promotion of Health and Biomedical Research (FISABIO), 46020 Valencia, Spain
| | - Constanza E Fernández
- Cariology Unit, Department of Oral Rehabilitation, Faculty of Dentistry, University of Talca, Talca 3462227, Chile
| | - Karla Gambetta-Tessini
- Cariology Unit, Department of Oral Rehabilitation, Faculty of Dentistry, University of Talca, Talca 3462227, Chile
| | - Carla P Lozano
- Laboratory of Biochemistry and Oral Biology, Institute for Research in Dental Sciences, Faculty of Dentistry, University of Chile, Santiago 8330111, Chile
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17
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Cho H, Ren Z, Divaris K, Roach J, Lin BM, Liu C, Azcarate-Peril MA, Simancas-Pallares MA, Shrestha P, Orlenko A, Ginnis J, North KE, Zandona AGF, Ribeiro AA, Wu D, Koo H. Selenomonas sputigena acts as a pathobiont mediating spatial structure and biofilm virulence in early childhood caries. Nat Commun 2023; 14:2919. [PMID: 37217495 PMCID: PMC10202936 DOI: 10.1038/s41467-023-38346-3] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2022] [Accepted: 04/21/2023] [Indexed: 05/24/2023] Open
Abstract
Streptococcus mutans has been implicated as the primary pathogen in childhood caries (tooth decay). While the role of polymicrobial communities is appreciated, it remains unclear whether other microorganisms are active contributors or interact with pathogens. Here, we integrate multi-omics of supragingival biofilm (dental plaque) from 416 preschool-age children (208 males and 208 females) in a discovery-validation pipeline to identify disease-relevant inter-species interactions. Sixteen taxa associate with childhood caries in metagenomics-metatranscriptomics analyses. Using multiscale/computational imaging and virulence assays, we examine biofilm formation dynamics, spatial arrangement, and metabolic activity of Selenomonas sputigena, Prevotella salivae and Leptotrichia wadei, either individually or with S. mutans. We show that S. sputigena, a flagellated anaerobe with previously unknown role in supragingival biofilm, becomes trapped in streptococcal exoglucans, loses motility but actively proliferates to build a honeycomb-like multicellular-superstructure encapsulating S. mutans, enhancing acidogenesis. Rodent model experiments reveal an unrecognized ability of S. sputigena to colonize supragingival tooth surfaces. While incapable of causing caries on its own, when co-infected with S. mutans, S. sputigena causes extensive tooth enamel lesions and exacerbates disease severity in vivo. In summary, we discover a pathobiont cooperating with a known pathogen to build a unique spatial structure and heighten biofilm virulence in a prevalent human disease.
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Affiliation(s)
- Hunyong Cho
- Department of Biostatistics, Gillings School of Global Public Health, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Zhi Ren
- Biofilm Research Laboratories, Center for Innovation & Precision Dentistry, School of Dental Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Kimon Divaris
- Division of Pediatric and Public Health, Adams School of Dentistry, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA.
- Department of Epidemiology, Gillings School of Public Health, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA.
| | - Jeffrey Roach
- UNC Information Technology Services and Research Computing, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
- UNC Microbiome Core, Center for Gastrointestinal Biology and Disease, School of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Bridget M Lin
- Department of Biostatistics, Gillings School of Global Public Health, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Chuwen Liu
- Department of Biostatistics, Gillings School of Global Public Health, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - M Andrea Azcarate-Peril
- UNC Microbiome Core, Center for Gastrointestinal Biology and Disease, School of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
- Department of Medicine, Division of Gastroenterology and Hepatology, School of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Miguel A Simancas-Pallares
- Division of Pediatric and Public Health, Adams School of Dentistry, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Poojan Shrestha
- Division of Pediatric and Public Health, Adams School of Dentistry, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
- Department of Epidemiology, Gillings School of Public Health, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Alena Orlenko
- Artificial Intelligence Innovation Lab, Cedars-Sinai Medical Center, Los Angeles, CA, USA
| | - Jeannie Ginnis
- Division of Pediatric and Public Health, Adams School of Dentistry, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Kari E North
- Department of Epidemiology, Gillings School of Public Health, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | | | - Apoena Aguiar Ribeiro
- Division of Diagnostic Sciences, Adams School of Dentistry, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Di Wu
- Department of Biostatistics, Gillings School of Global Public Health, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA.
- Division of Oral and Craniofacial Health Sciences, Adams School of Dentistry, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA.
| | - Hyun Koo
- Biofilm Research Laboratories, Center for Innovation & Precision Dentistry, School of Dental Medicine, University of Pennsylvania, Philadelphia, PA, USA.
- Department of Orthodontics, School of Dental Medicine, University of Pennsylvania, Philadelphia, PA, USA.
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18
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Ebersole JL, Kirakodu S, Gonzalez O. Differential oral microbiome in nonhuman primates from periodontitis-susceptible and periodontitis-resistant matrilines. Mol Oral Microbiol 2023; 38:93-114. [PMID: 35837817 DOI: 10.1111/omi.12377] [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: 05/06/2022] [Revised: 07/01/2022] [Accepted: 07/06/2022] [Indexed: 11/28/2022]
Abstract
Rhesus monkeys (n = 36) exhibiting a healthy periodontium at baseline were used to induce progressing periodontitis through ligature placement around premolar/molar teeth. Bacterial samples were collected at baseline, 0.5, 1, and 3 months of disease and at 5 months for disease resolution. The animals were distributed into two groups (18/group): 3-7 years (young) and 12-23 years (adult) and stratified based upon matriline susceptibility to periodontitis (PDS, susceptible; PDR, resistant). A total of 444 operational taxonomic units (OTUs) with 100 microbes representing a core microbiome present in ≥75% of the samples were identified. Only 48% of the major phylotypes overlapped in the PDS and PDR samples. Different OTU abundance patterns were seen in young animals from the PDS and PDR matrilines, with qualitative similarities during disease and the relative abundance of phylotypes becoming less diverse. In adults, 23 OTUs were increased during disease in PDS samples and 24 in PDR samples; however, only five were common between these groups. Greater diversity of OTU relative abundance at baseline was observed with adult compared to young oral samples from both the PDS and PDR groups. With disease initiation (2 weeks), less diversity of relative abundance and some distinctive increases in specific OTUs were noted. By 1 month, there was considerable qualitative homogeneity in the major OTUs in both groups; however, by 3 months, there was an exacerbation of both qualitative and quantitative differences in the dominant OTUs between the PDS and PDR samples. These results support that some differences in disease expression related to matriline (familial) periodontitis risk may be explained by microbiome features.
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Affiliation(s)
- Jeffrey L Ebersole
- Department of Biomedical Sciences, School of Dental Medicine, University of Nevada Las Vegas, Las Vegas, Nevada, USA
- Center for Oral Health Research, College of Dentistry, University of Kentucky, Lexington, Kentucky, USA
| | - Sreenatha Kirakodu
- Center for Oral Health Research, College of Dentistry, University of Kentucky, Lexington, Kentucky, USA
| | - Octovio Gonzalez
- Center for Oral Health Research, College of Dentistry, University of Kentucky, Lexington, Kentucky, USA
- Division of Periodontology, College of Dentistry, University of Kentucky, Lexington, Kentucky, USA
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Lin BM, Cho H, Liu C, Roach J, Ribeiro AA, Divaris K, Wu D. BZINB Model-Based Pathway Analysis and Module Identification Facilitates Integration of Microbiome and Metabolome Data. Microorganisms 2023; 11:766. [PMID: 36985339 PMCID: PMC10056694 DOI: 10.3390/microorganisms11030766] [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: 01/31/2023] [Revised: 03/04/2023] [Accepted: 03/12/2023] [Indexed: 03/19/2023] Open
Abstract
Integration of multi-omics data is a challenging but necessary step to advance our understanding of the biology underlying human health and disease processes. To date, investigations seeking to integrate multi-omics (e.g., microbiome and metabolome) employ simple correlation-based network analyses; however, these methods are not always well-suited for microbiome analyses because they do not accommodate the excess zeros typically present in these data. In this paper, we introduce a bivariate zero-inflated negative binomial (BZINB) model-based network and module analysis method that addresses this limitation and improves microbiome-metabolome correlation-based model fitting by accommodating excess zeros. We use real and simulated data based on a multi-omics study of childhood oral health (ZOE 2.0; investigating early childhood dental caries, ECC) and find that the accuracy of the BZINB model-based correlation method is superior compared to Spearman's rank and Pearson correlations in terms of approximating the underlying relationships between microbial taxa and metabolites. The new method, BZINB-iMMPath, facilitates the construction of metabolite-species and species-species correlation networks using BZINB and identifies modules of (i.e., correlated) species by combining BZINB and similarity-based clustering. Perturbations in correlation networks and modules can be efficiently tested between groups (i.e., healthy and diseased study participants). Upon application of the new method in the ZOE 2.0 study microbiome-metabolome data, we identify that several biologically-relevant correlations of ECC-associated microbial taxa with carbohydrate metabolites differ between healthy and dental caries-affected participants. In sum, we find that the BZINB model is a useful alternative to Spearman or Pearson correlations for estimating the underlying correlation of zero-inflated bivariate count data and thus is suitable for integrative analyses of multi-omics data such as those encountered in microbiome and metabolome studies.
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Affiliation(s)
- Bridget M. Lin
- Department of Biostatistics, Gillings School of Global Public Health, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA
| | - Hunyong Cho
- Department of Biostatistics, Gillings School of Global Public Health, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA
| | - Chuwen Liu
- Department of Biostatistics, Gillings School of Global Public Health, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA
| | - Jeff Roach
- Research Computing, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA
| | - Apoena Aguiar Ribeiro
- Division of Diagnostic Sciences, Adams School of Dentistry, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA
| | - Kimon Divaris
- Division of Pediatric and Public Health, Adams School of Dentistry, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA
- Department of Epidemiology, Gillings School of Global Public Health, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA
| | - Di Wu
- Department of Biostatistics, Gillings School of Global Public Health, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA
- Division of Oral and Craniofacial Health Sciences, Adams School of Dentistry, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA
- Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA
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20
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Hashemi B, Abdollahi M, Abbaspour-Aghdam S, Hazrati A, Malekpour K, Meshgi S, Kafil HS, Ghazi F, Yousefi M, Roshangar L, Ahmadi M. The effect of probiotics on immune responses and their therapeutic application: A new treatment option for multiple sclerosis. Biomed Pharmacother 2023; 159:114195. [PMID: 36630847 DOI: 10.1016/j.biopha.2022.114195] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2022] [Revised: 12/10/2022] [Accepted: 12/28/2022] [Indexed: 01/12/2023] Open
Abstract
Multiple sclerosis (MS) is known as a chronic inflammatory disease (CID) that affects the central nervous system and leads to nerve demyelination. However, the exact cause of MS is unknown, but immune system regulation and inhibiting the function of inflammatory pathways may have a beneficial effect on controlling and improving the disease. Studies show that probiotics can alter the gut microbiome, thereby improving and affecting the immune system and inflammatory responses in patients with MS. The results show that probiotics have a good effect on the recovery of patients with MS in humans and animals. The present study investigated the effect of probiotics and possible therapeutic mechanisms of probiotics on immune cells and inflammatory cytokines. This review article showed that probiotics could improve immune cells and inflammatory cytokines in patients with MS and can play an effective role in disease management and control.
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Affiliation(s)
- Behnam Hashemi
- Department of Bacteriology, Faculty of Medical Science, Tarbiat Modares University, Tehran, Iran
| | - Maryam Abdollahi
- Department of Bacteriology, Faculty of Medical Science, Tarbiat Modares University, Tehran, Iran
| | - Sanaz Abbaspour-Aghdam
- Department of Clinical Biochemistry and Applied Cell Sciences, Faculty of Medicine, Urmia University of Medical Sciences, Urmia, Iran
| | - Ali Hazrati
- Department of Immunology, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Kosar Malekpour
- Department of Immunology, School of Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Shahla Meshgi
- Cardiovascular Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Hossein Samadi Kafil
- Drug Applied Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Farhood Ghazi
- Stem Cell Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Mehdi Yousefi
- Stem Cell Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Leila Roshangar
- Stem Cell Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Majid Ahmadi
- Stem Cell Research Center, Tabriz University of Medical Sciences, Tabriz, Iran.
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21
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Lin B, Cho H, Liu C, Roach J, Ribeiro AA, Divaris K, Wu D. BZINB model-based pathway analysis and module identification facilitates integration of microbiome and metabolome data. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.01.30.526301. [PMID: 36778424 PMCID: PMC9915478 DOI: 10.1101/2023.01.30.526301] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Integration of multi-omics data is a challenging but necessary step to advance our understanding of the biology underlying human health and disease processes. To date, investigations seeking to integrate multi-omics (e.g., microbiome and metabolome) employ simple correlation-based network analyses; however, these methods are not always well-suited for microbiome analyses because they do not accommodate the excess zeros typically present in these data. In this paper, we introduce a bivariate zero-inflated negative binomial (BZINB) model-based network and module analysis method that addresses this limitation and improves microbiome-metabolome correlation-based model fitting by accommodating excess zeros. We use real and simulated data based on a multi-omics study of childhood oral health (ZOE 2.0; investigating early childhood dental disease, ECC) and find that the accuracy of the BZINB model-based correlation method is superior compared to Spearman’s rank and Pearson correlations in terms of approximating the underlying relationships between microbial taxa and metabolites. The new method, BZINB-iMMPath facilitates the construction of metabolite-species and species-species correlation networks using BZINB and identifies modules of (i.e., correlated) species by combining BZINB and similarity-based clustering. Perturbations in correlation networks and modules can be efficiently tested between groups (i.e., healthy and diseased study participants). Upon application of the new method in the ZOE 2.0 study microbiome-metabolome data, we identify that several biologically-relevant correlations of ECC-associated microbial taxa with carbohydrate metabolites differ between healthy and dental caries-affected participants. In sum, we find that the BZINB model is a useful alternative to Spearman or Pearson correlations for estimating the underlying correlation of zero-inflated bivariate count data and thus is suitable for integrative analyses of multi-omics data such as those encountered in microbiome and metabolome studies.
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Affiliation(s)
- Bridget Lin
- Department of Biostatistics, Gillings School of Global Public Health, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, United States
| | - Hunyong Cho
- Department of Biostatistics, Gillings School of Global Public Health, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, United States
| | - Chuwen Liu
- Department of Biostatistics, Gillings School of Global Public Health, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, United States
| | - Jeff Roach
- Research Computing, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, United States
| | - Apoena Aguiar Ribeiro
- Division of Diagnostic Sciences, Adams School of Dentistry, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, United States
| | - Kimon Divaris
- Division of Pediatric and Public Health, Adams School of Dentistry, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, United States,Department of Epidemiology, Gillings School of Global Public Health, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, United States
| | - Di Wu
- Department of Biostatistics, Gillings School of Global Public Health, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, United States,Division of Oral and Craniofacial Health Sciences, Adams School of Dentistry, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599,Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, United States,Correspondence: ; Tel: +1-919-537-3277
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22
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Perng WT, Ma KSK, Hung HY, Tsai YC, Huang JY, Liao PL, Hung YM, Wei JCC. Dental caries and risk of newly-onset systemic lupus erythematosus: a nationwide population-based cohort study. Curr Med Res Opin 2023; 39:307-317. [PMID: 36533392 DOI: 10.1080/03007995.2022.2159146] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
OBJECTIVE This study investigated whether patients with history of dental caries are associated with an increased risk of newly-onset systemic lupus erythematosus (SLE). METHODS A total of 501,461 carious patients and 258,918 controls without carious teeth were enrolled between 1997 and 2013 from the National Health Insurance Research Database. Subgroup analyses were conducted based on restorative materials including amalgam, composite resins, or both. The cumulative incidence and hazard ratios (HRs) of SLE development were derived after adjusting for age, sex, socioeconomic status, income, insured classification, comorbidities, and frequency of dental visit in a multivariable model. RESULTS The risk of SLE was significantly higher in carious patients (HR = 1.98, 95% confidence interval [CI] = 1.65-2.38) compared to controls. Dose-dependent relationship between caries and risk of SLE was identified. The risk of SLE was higher among those who had dental visits ≧11 (HR = 2.53, 95% CI = 1.86-3.43), followed by those with 3-10 dental visits (HR = 1.86, 95% CI = 1.36-2.54), when compared to those with 1-2 visits, and was higher among those who had carious teeth extractions ≧5 (HR = 1.88, 95% CI = 1.19-2.97), followed by those with 1-4 carious teeth extractions (HR = 1.36, 95% CI = 1.17-1.59) than those without extraction. The risk of SLE for dental caries management among different restorative materials, including amalgam, composite resins, or both, was not statistically different. CONCLUSIONS Patients with dental caries were associated with higher SLE risks. The relationship between dental caries and risk of SLE was dose-dependent, regardless of the material used for the restoration.
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Affiliation(s)
- Wuu-Tsun Perng
- Department of Recreational Sport & Health Promotion, National Pingtung University of Science and Technology, Pingtung, Taiwan
- Graduate Institute of Medicine, Chung Shan Medical University, Taichung, Taiwan
| | - Kevin Sheng-Kai Ma
- Center for Global Health, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
- Department of Epidemiology, Harvard T.H. Chan School of Public Health, Boston, MA, USA
- Department of Dermatology, Massachusetts General Hospital, Boston, MA, USA
| | - Hsin-Yu Hung
- Department of Education, Chung Shan Medical University Hospital, Taichung, Taiwan
| | - Yi-Chieh Tsai
- School of Medicine, Chung Shan Medical University, Taichung, Taiwan
| | - Jing-Yang Huang
- Department of Medical Research, Chung Shan Medical University, Taichung, Taiwan
| | - Pei-Lun Liao
- Department of Medical Research, Chung Shan Medical University, Taichung, Taiwan
| | - Yao-Min Hung
- Division of Nephrology, Department of Internal Medicine, Taipei Veterans General Hospital Taitung Branch, Taitung, Taiwan
- College of Health and Nursing, Meijo University, Pingtung, Taiwan
- College of Science and Engineering, National Taitung University, Taitung, Taiwan
| | - James Cheng-Chung Wei
- Division of Allergy, Immunology and Rheumatology, Chung Shan Medical University Hospital, Taichung, Taiwan
- Institute of Medicine, Chung Shan Medical University, Taichung, Taiwan
- Graduate Institute of Integrated Medicine, China Medical University, Taichung, Taiwan
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23
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The Role and Involvement of Stem Cells in Periodontology. Biomedicines 2023; 11:biomedicines11020387. [PMID: 36830924 PMCID: PMC9953576 DOI: 10.3390/biomedicines11020387] [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: 01/16/2023] [Accepted: 01/25/2023] [Indexed: 01/31/2023] Open
Abstract
Periodontitis is a widespread inflammatory condition, characterized by a progressive deterioration of the supporting structures of the teeth. Due to the complexity of periodontal tissue and the surrounding inflammatory microenvironment, the repair of lesions at this level represents a continuous challenge. The regeneration of periodontal tissues is considered a promising strategy. Stem cells have remarkable properties, such as immunomodulatory potential, proliferation, migration, and multilineage differentiation. Thus, they can be used to repair tissue damage and reduce inflammation, potentially leading to periodontal regeneration. Among the stem cells used for periodontal regeneration, we studied dental mesenchymal stem cells (DMSCs), non-dental stem cells, and induced pluripotent stem cells (IPSCs). Although these cells have well documented important physiological characteristics, their use in contemporary practice to repair the affected periodontium is still a challenge.
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24
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Neculae E, Gosav EM, Valasciuc E, Dima N, Floria M, Tanase DM. The Oral Microbiota in Valvular Heart Disease: Current Knowledge and Future Directions. LIFE (BASEL, SWITZERLAND) 2023; 13:life13010182. [PMID: 36676130 PMCID: PMC9862471 DOI: 10.3390/life13010182] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/14/2022] [Revised: 12/31/2022] [Accepted: 01/06/2023] [Indexed: 01/11/2023]
Abstract
Oral microbiota formation begins from birth, and everything from genetic components to the environment, alongside the host's behavior (such as diet, smoking, oral hygiene, and even physical activity), contributes to oral microbiota structure. Even though recent studies have focused on the gut microbiota's role in systemic diseases, the oral microbiome represents the second largest community of microorganisms, making it a new promising therapeutic target. Periodontitis and dental caries are considered the two main consequences of oral bacterial imbalance. Studies have shown that oral dysbiosis effects are not limited locally. Due to technological advancement, research identified oral bacterial species in heart valves. This evidence links oral dysbiosis with the development of valvular heart disease (VHD). This review focuses on describing the mechanism behind prolonged local inflammation and dysbiosis, that can induce bacteriemia by direct or immune-mediated mechanisms and finally VHD. Additionally, we highlight emerging therapies based on controlling oral dysbiosis, periodontal disease, and inflammation with immunological and systemic effects, that exert beneficial effects in VHD management.
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Affiliation(s)
- Ecaterina Neculae
- Department of Gastroenterology, “Grigore T. Popa” University of Medicine and Pharmacy, 700115 Iasi, Romania
- Institute of Gastroenterology and Hepatology, “Sf. Spiridon” County Clinical Emergency Hospital Iasi, 700111 Iasi, Romania
| | - Evelina Maria Gosav
- Department of Internal Medicine, “Grigore T. Popa” University of Medicine and Pharmacy, 700115 Iasi, Romania
- Internal Medicine Clinic, “St. Spiridon” County Clinical Emergency Hospital Iasi, 700111 Iasi, Romania
| | - Emilia Valasciuc
- Department of Internal Medicine, “Grigore T. Popa” University of Medicine and Pharmacy, 700115 Iasi, Romania
- Internal Medicine Clinic, “St. Spiridon” County Clinical Emergency Hospital Iasi, 700111 Iasi, Romania
| | - Nicoleta Dima
- Department of Internal Medicine, “Grigore T. Popa” University of Medicine and Pharmacy, 700115 Iasi, Romania
- Internal Medicine Clinic, “St. Spiridon” County Clinical Emergency Hospital Iasi, 700111 Iasi, Romania
| | - Mariana Floria
- Department of Internal Medicine, “Grigore T. Popa” University of Medicine and Pharmacy, 700115 Iasi, Romania
- Internal Medicine Clinic, “St. Spiridon” County Clinical Emergency Hospital Iasi, 700111 Iasi, Romania
- Correspondence:
| | - Daniela Maria Tanase
- Department of Internal Medicine, “Grigore T. Popa” University of Medicine and Pharmacy, 700115 Iasi, Romania
- Internal Medicine Clinic, “St. Spiridon” County Clinical Emergency Hospital Iasi, 700111 Iasi, Romania
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25
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Moreno CM, Boeree E, Freitas CMT, Weber KS. Immunomodulatory role of oral microbiota in inflammatory diseases and allergic conditions. FRONTIERS IN ALLERGY 2023; 4:1067483. [PMID: 36873050 PMCID: PMC9981797 DOI: 10.3389/falgy.2023.1067483] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2022] [Accepted: 01/26/2023] [Indexed: 02/19/2023] Open
Abstract
In recent years, the interplay between oral microbiota and systemic disease has gained attention as poor oral health is associated with several pathologies. The oral microbiota plays a role in the maintenance of overall health, and its dysbiosis influences chronic inflammation and the pathogenesis of gum diseases. Periodontitis has also been associated with other diseases and health complications such as cancer, neurogenerative and autoimmune disorders, chronic kidney disease, cardiovascular diseases, rheumatic arthritis, respiratory health, and adverse pregnancy outcomes. The host microbiota can influence immune cell development and immune responses, and recent evidence suggests that changes in oral microbiota composition may also contribute to sensitization and the development of allergic reactions, including asthma and peanut allergies. Conversely, there is also evidence that allergic reactions within the gut may contribute to alterations in oral microbiota composition. Here we review the current evidence of the role of the oral microbiota in inflammatory diseases and health complications, as well as its future relevance in improving health and ameliorating allergic disease.
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Affiliation(s)
- Carlos M Moreno
- Department of Microbiology and Molecular Biology, Brigham Young University, Provo, UT, United States
| | - Ellie Boeree
- Department of Microbiology and Molecular Biology, Brigham Young University, Provo, UT, United States
| | - Claudia M Tellez Freitas
- College of Dental Medicine, Roseman University of Health Sciences, South Jordan, UT, United States
| | - K Scott Weber
- Department of Microbiology and Molecular Biology, Brigham Young University, Provo, UT, United States
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26
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The tongue biofilm metatranscriptome identifies metabolic pathways associated with the presence or absence of halitosis. NPJ Biofilms Microbiomes 2022; 8:100. [PMID: 36535943 PMCID: PMC9763428 DOI: 10.1038/s41522-022-00364-2] [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: 01/10/2022] [Accepted: 12/06/2022] [Indexed: 12/23/2022] Open
Abstract
Intra-oral halitosis usually results from the production of volatile sulfur compounds, such as methyl mercaptan and hydrogen sulfide, by the tongue microbiota. There are currently no reports on the microbial gene-expression profiles of the tongue microbiota in halitosis. In this study, we performed RNAseq of tongue coating samples from individuals with and without halitosis. The activity of Streptococcus (including S. parasanguinis), Veillonella (including V. dispar) and Rothia (including R. mucilaginosa) was associated with halitosis-free individuals while Prevotella (including P. shahi), Fusobacterium (including F. nucleatum) and Leptotrichia were associated with halitosis. Interestingly, the metatranscriptome of patients that only had halitosis levels of methyl mercaptan was similar to that of halitosis-free individuals. Finally, gene expression profiles showed a significant over-expression of genes involved in L-cysteine and L-homocysteine synthesis, as well as nitrate reduction genes, in halitosis-free individuals and an over-expression of genes responsible for cysteine degradation into hydrogen sulfide in halitosis patients.
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27
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Carda-Diéguez M, Moazzez R, Mira A. Functional changes in the oral microbiome after use of fluoride and arginine containing dentifrices: a metagenomic and metatranscriptomic study. MICROBIOME 2022; 10:159. [PMID: 36171634 PMCID: PMC9520947 DOI: 10.1186/s40168-022-01338-4] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/22/2022] [Accepted: 07/27/2022] [Indexed: 06/16/2023]
Abstract
BACKGROUND Tooth decay is one of the most prevalent diseases worldwide, and efficient tooth brushing with a fluoride-containing dentifrice is considered fundamental to caries prevention. Fluoride-containing dentifrices have been extensively studied in relation to enamel resistance to demineralization. Arginine (Arg) has also been proposed as a promising prebiotic to promote pH buffering through ammonia production. Here, we present the first metagenomic (DNA sequencing of the whole microbial community) and metatranscriptomic (RNAseq of the same community) analyses of human dental plaque to evaluate the effect of brushing with fluoride (Fl) and a Fl+Arg containing dentifrices on oral microbial composition and activity. Fifty-three patients were enrolled in a longitudinal clinical intervention study with two arms, including 26 caries-active and 27 caries-free adults. After a minimum 1-week washout period, dental plaque samples were collected at this post-washout baseline, 3 months after the use of a 1450-ppm fluoride dentifrice, and after 6 months of using a 1450-ppm fluoride with 1.5% arginine dentifrice. RESULTS There was a shift in both the composition and activity of the plaque microbiome after 3 months of brushing with the fluoride-containing toothpaste compared to the samples collected at the 1-week post-washout period, both for caries-active and caries-free sites. Although several caries-associated bacteria were reduced, there was also an increase in several health- and periodontitis-associated bacteria. Over 400 genes changed proportion in the metagenome, and between 180 and 300 genes changed their expression level depending on whether caries-free or caries-active sites were analyzed. The metagenome and metatranscriptome also changed after the subjects brushed with the Fl+Arg dentifrice. There was a further decrease of both caries- and periodontitis-associated organisms. In both caries-free and caries-active sites, a decrease of genes from the arginine biosynthesis pathway was also observed, in addition to an increase in the expression of genes associated with the arginine deiminase pathway, which catabolizes arginine into ammonia, thereby buffering acidic pH. Bacterial richness and diversity were not affected by either of the two treatments in the two arms of the study. CONCLUSIONS Our data demonstrate that long-term use of both assayed dentifrices changes the bacterial composition and functional profiles of human dental plaque towards a healthier microbial community, both in caries-free and caries-active sites. This observation was especially apparent for the Fl+Arg dentifrice. Thus, we conclude that the preventive benefits of tooth brushing go beyond the physical removal of dental plaque and that the active ingredients formulated within dentifrices have a positive effect not only on enamel chemistry but also on the metabolism of oral microbial populations. Video Abstract.
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Affiliation(s)
| | - Rebecca Moazzez
- Faculty of Dentistry, Oral & Craniofacial Sciences, King's College London, London, UK
| | - Alex Mira
- Genomics and Health Department, FISABIO Institute, Valencia, Spain.
- Network of Epidemiology and Public Health, CIBERESP, Madrid, Spain.
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28
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Kalanzi D, Mayanja-Kizza H, Nakanjako D, Semitala F, Mboowa G, Mbabali M, Kigozi E, Katabazi FA, Sserwadda I, Kateete DP, Achan B, Sewankambo NK, Muwonge A. Microbial characteristics of dental caries in HIV positive individuals. FRONTIERS IN ORAL HEALTH 2022; 3:1004930. [PMID: 36211252 PMCID: PMC9533146 DOI: 10.3389/froh.2022.1004930] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2022] [Accepted: 08/31/2022] [Indexed: 11/13/2022] Open
Abstract
Background Dental caries is a multifactorial disease that affects many people. Even though microorganisms play a crucial role in causing dental caries, diagnosis is routinely macroscopic. In order to improve early detection especially in HIV patients who are disproportionately affected, there is need to reconcile the macroscopic and microscopic characteristics of dental caries. Therefore, the aim of this study was to characterize the oral microbiota profile along the decayed, missing, filled teeth (DMFT) index using amplicon sequencing data. Methods Amplicon sequencing of the V6-V8 region of the 16S rRNA gene was done on DNA recovered from whole unstimulated saliva of 59 HIV positive and 29 HIV negative individuals. The microbial structure, composition and co-occurrence networks were characterized using QIIME-2, Phyloseq, Microbiome-1.9.2 and Metacoder in R. Results We characterized the oral microbiota into 2,093 operational taxonomic units (OTUs), 21 phyla and 239 genera from 2.6 million high quality sequence reads. While oral microbiota did not cluster participants into distinct groups that track with the DMFT index, we observed the following: (a) The proportion of accessory microbiota was highest in the high DMFT category while the core size (∼50% of richness) remained relatively stable across all categories. (b) The abundance of core genera such as Stomatobaculum, Peptostreptococcus and Campylobacter was high at onset of dental caries, (c) A general difference in oral microbial biomass. (d) The onset of dental caries (low DMFT) was associated with significantly lower oral microbial entropy. Conclusions Although oral microbial shifts along the DMFT index were not distinct, we demonstrated the potential utility of microbiota dynamics to characterize oral disease. Therefore, we propose a microbial framework using the DMFT index to better understand dental caries among HIV positive people in resource limited settings.
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Affiliation(s)
- Dunstan Kalanzi
- Department of Dentistry, School of Health Sciences, Makerere University College of Health Sciences, Kampala, Uganda
| | - Harriet Mayanja-Kizza
- Department of Medicine, School of Medicine, Makerere University College of Health Sciences, Kampala, Uganda
| | - Damalie Nakanjako
- Department of Medicine, School of Medicine, Makerere University College of Health Sciences, Kampala, Uganda
| | - Fred Semitala
- Department of Medicine, School of Medicine, Makerere University College of Health Sciences, Kampala, Uganda
| | - Gerald Mboowa
- Department of Immunology and Molecular Biology, School of Biomedical Sciences, Makerere University College of Health Sciences, Kampala, Uganda
| | - Muhammad Mbabali
- Department of Dentistry, School of Health Sciences, Makerere University College of Health Sciences, Kampala, Uganda
| | - Edgar Kigozi
- Department of Immunology and Molecular Biology, School of Biomedical Sciences, Makerere University College of Health Sciences, Kampala, Uganda
| | - Fred Ashaba Katabazi
- Department of Immunology and Molecular Biology, School of Biomedical Sciences, Makerere University College of Health Sciences, Kampala, Uganda
| | - Ivan Sserwadda
- Department of Immunology and Molecular Biology, School of Biomedical Sciences, Makerere University College of Health Sciences, Kampala, Uganda
| | - David P. Kateete
- Department of Immunology and Molecular Biology, School of Biomedical Sciences, Makerere University College of Health Sciences, Kampala, Uganda
| | - Beatrice Achan
- Department of Medical Microbiology, School of Biomedical Sciences, Makerere University College of Health Sciences, Kampala, Uganda
| | - Nelson K. Sewankambo
- Department of Medicine, School of Medicine, Makerere University College of Health Sciences, Kampala, Uganda
| | - Adrian Muwonge
- Division of Genetics and Genomics, The Roslin Institute, University of Edinburgh, Edinburgh, United Kingdom
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Fabrication and Optimization of Essential-Oil-Loaded Nanoemulsion Using Box-Behnken Design against Staphylococos aureus and Staphylococos epidermidis Isolated from Oral Cavity. Pharmaceutics 2022; 14:pharmaceutics14081640. [PMID: 36015266 PMCID: PMC9416493 DOI: 10.3390/pharmaceutics14081640] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2022] [Revised: 07/21/2022] [Accepted: 08/01/2022] [Indexed: 11/26/2022] Open
Abstract
Oral bacterial infections are fairly common in patients with diabetes mellitus; however, due to limited treatment options, herbal medicines are considered an alternate solution. This study aimed to formulate a stable essential-oil-loaded nanoemulsion for the treatment of oral bacterial infections. Essential oils from edible sources including coriander, clove, cinnamon and cardamom were extracted by hydrodistillation. The response surface methodology was used to optimize the nanoemulsion formulation by applying the Box–Behnken design. The oil concentration, surfactant concentration and stirring speed were three independent factors, and particle size and polydispersity index were two responses. The particle size, polydispersity index and zeta potential of the optimized formulation were 130 mm, 0.222 and −22.9, respectively. The ATR-FTIR analysis revealed that there was no incompatibility between the active ingredients and the excipients. A significant release profile in active ingredients of nanoemulsion, i.e., 88.75% of the cinnamaldehyde and 89.33% of eugenol, was recorded after 24 h. In the ex vivo goat mucosal permeation study, 71.67% of the cinnamaldehyde permeated and that of the eugenol 70.75% from the nanoemulsion. The optimized formulation of the essential-oil-loaded nanoemulsion showed a 9 mm zone of inhibition against Staphylococcus aureus and Staphylococcus epidermidis, whereas in anti-quorum sensing analysis, the optimized nanoemulsion formulation showed an 18 mm zone of inhibition. It was concluded that formulated essential-oil-loaded nanoemulsion can be used against S. epidermidis and S. aureus infections in oral cavity.
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Slazhneva E, Tikhomirova E, Tsarev V, Orekhova L, Loboda E, Atrushkevich V. Candida species detection in patients with chronic periodontitis: A systematic review and meta-analysis. Clin Exp Dent Res 2022; 8:1354-1375. [PMID: 35903878 PMCID: PMC9760140 DOI: 10.1002/cre2.635] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2021] [Revised: 06/10/2022] [Accepted: 07/05/2022] [Indexed: 01/26/2023] Open
Abstract
OBJECTIVES To assess the Candida species occurrence rate and concentration in periodontal pockets in chronic periodontitis (CP) by meta-analysis. MATERIALS AND METHODS A search was performed of articles published between January 1, 2010, and October 1, 2020, in English and in Russian, in the electronic databases MEDLINE-PubMed, Google Scholar, The Cochrane Library, ClinicalTrials.gov, Research Gate, eLIBRARY, and Cyberleninka (PROSPEROCRD42021234831). The odds ratio (OR), standardized mean difference (SMD), and 95% confidence interval (CI) were calculated using Review Manager 5.4.1 to compare the risk of CP when Candida spp. were detected in the gingival sulcus or periodontal pocket and to compare Candida spp. density counts in patients with CP and periodontally healthy patients. RESULTS Twenty-six studies were included in the systematic review and 11 were included in the meta-analysis. The results showed that Candida spp. may increase the chance of CP development by 1.76 times (OR = 1.76; 95% CI = 1.04-2.99; Z = 2.10; p = .04; I2 = 61%). More Candida spp. were found in patients with CP than in periodontally healthy patients (SMD = 1.58; 95% CI = 0.15-3.02; p = .03; I2 = 98%). No data were found relating to the statistically significant influence of Candida glabrata, Candida krusei and Candida tropicalis on CP development. CONCLUSION We found that Candida albicans insignificantly increased the risk of CP development but, due to the heterogeneity of the included studies, further research is necessary to determine the exact role of Candida spp. in the development and course of the inflammatory periodontal diseases.
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Affiliation(s)
- Ekaterina Slazhneva
- Department of PeriodontologyA.I. Yevdokimov Moscow State University of Medicine and DentistryМoscowRussian Federation
| | - Ekaterina Tikhomirova
- Department of PeriodontologyA.I. Yevdokimov Moscow State University of Medicine and DentistryМoscowRussian Federation
| | - Victor Tsarev
- Department of Microbiology, Virology, ImmunologyA.I. Yevdokimow Moscow State University of Medicine and DentistryMoscowRussian Federation,Laboratory of Molecular Biological ResearchResearch Medical and Dental InstituteМoscowRussian Federation
| | - Liudmila Orekhova
- Department of Restorative Dentistry and PeriodontologyFirst Pavlov State Medical University of St PetersburgSt PetersburgRussian Federation
| | - Ekaterina Loboda
- Department of Restorative Dentistry and PeriodontologyFirst Pavlov State Medical University of St PetersburgSt PetersburgRussian Federation
| | - Victoria Atrushkevich
- Department of PeriodontologyA.I. Yevdokimov Moscow State University of Medicine and DentistryМoscowRussian Federation
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Oralbiotica/Oralbiotics: The Impact of Oral Microbiota on Dental Health and Demineralization: A Systematic Review of the Literature. CHILDREN (BASEL, SWITZERLAND) 2022; 9:children9071014. [PMID: 35883998 PMCID: PMC9323959 DOI: 10.3390/children9071014] [Citation(s) in RCA: 38] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/31/2022] [Revised: 06/30/2022] [Accepted: 07/06/2022] [Indexed: 12/17/2022]
Abstract
The oral microbiota plays a vital role in the human microbiome and oral health. Imbalances between microbes and their hosts can lead to oral and systemic disorders such as diabetes or cardiovascular disease. The purpose of this review is to investigate the literature evidence of oral microbiota dysbiosis on oral health and discuss current knowledge and emerging mechanisms governing oral polymicrobial synergy and dysbiosis; both have enhanced our understanding of pathogenic mechanisms and aided the design of innovative therapeutic approaches as ORALBIOTICA for oral diseases such as demineralization. PubMed, Web of Science, Google Scholar, Scopus, Cochrane Library, EMBEDDED, Dentistry & Oral Sciences Source via EBSCO, APA PsycINFO, APA PsyArticles, and DRUGS@FDA were searched for publications that matched our topic from January 2017 to 22 April 2022, with an English language constraint using the following Boolean keywords: ("microbio*" and "demineralization*") AND ("oral microbiota" and "demineralization"). Twenty-two studies were included for qualitative analysis. As seen by the studies included in this review, the balance of the microbiota is unstable and influenced by oral hygiene, the presence of orthodontic devices in the oral cavity and poor eating habits that can modify its composition and behavior in both positive and negative ways, increasing the development of demineralization, caries processes, and periodontal disease. Under conditions of dysbiosis, favored by an acidic environment, the reproduction of specific bacterial strains increases, favoring cariogenic ones such as Bifidobacterium dentium, Bifidobacterium longum, and S. mutans, than S. salivarius and A. viscosus, and increasing of Firmicutes strains to the disadvantage of Bacteroidetes. Microbial balance can be restored by using probiotics and prebiotics to manage and treat oral diseases, as evidenced by mouthwashes or dietary modifications that can influence microbiota balance and prevent or slow disease progression.
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Strategies to Combat Caries by Maintaining the Integrity of Biofilm and Homeostasis during the Rapid Phase of Supragingival Plaque Formation. Antibiotics (Basel) 2022; 11:antibiotics11070880. [PMID: 35884135 PMCID: PMC9312143 DOI: 10.3390/antibiotics11070880] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2022] [Revised: 06/24/2022] [Accepted: 06/28/2022] [Indexed: 02/06/2023] Open
Abstract
Bacteria in the oral cavity, including commensals and opportunistic pathogens, are organized into highly specialized sessile communities, coexisting in homeostasis with the host under healthy conditions. A dysbiotic environment during biofilm evolution, however, allows opportunistic pathogens to become the dominant species at caries-affected sites at the expense of health-associated taxa. Combining tooth brushing with dentifrices or rinses combat the onset of caries by partially removes plaque, but resulting in the biofilm remaining in an immature state with undesirables’ consequences on homeostasis and oral ecosystem. This leads to the need for therapeutic pathways that focus on preserving balance in the oral microbiota and applying strategies to combat caries by maintaining biofilm integrity and homeostasis during the rapid phase of supragingival plaque formation. Adhesion, nutrition, and communication are fundamental in this phase in which the bacteria that have survived these adverse conditions rebuild and reorganize the biofilm, and are considered targets for designing preventive strategies to guide the biofilm towards a composition compatible with health. The present review summarizes the most important advances and future prospects for therapies based on the maintenance of biofilm integrity and homeostasis as a preventive measure of dysbiosis focused on these three key factors during the rapid phase of plaque formation.
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García-Mato E, Martínez-Lamas L, Álvarez-Fernández M, Varela-Aneiros I, Diniz-Freitas M, Limeres-Posse J, Diz-Dios P. Molecular Detection of Streptococcus downii sp. nov. from Dental Plaque Samples from Patients with Down Syndrome and Non-Syndromic Individuals. Microorganisms 2022; 10:microorganisms10061098. [PMID: 35744617 PMCID: PMC9227364 DOI: 10.3390/microorganisms10061098] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2022] [Revised: 05/12/2022] [Accepted: 05/23/2022] [Indexed: 01/27/2023] Open
Abstract
A new bacterial species has recently been identified in the dental plaque of an adolescent with Down syndrome. The species is known as Streptococcus downii sp. nov. (abbreviated to S. downii), and it inhibits the growth of S. mutans and certain periodontal pathogens. The aim of this study was to determine the distribution of S. downii in the oral cavity of individuals with Down syndrome. Methods: A specific polymerase chain reaction for the operon of bacteriocin (class IIb lactobin A/cerein 7B family) was designed to detect S. downii in individuals with Down syndrome (n = 200) and in the general population (n = 100). We also compared the whole genome of S. downii and the regions related to its bacteriocins against 127 metagenomes of supragingival plaque of the “Human Microbiome Project”. Results: We detected the specific gene of the S. downii bacteriocin in an individual with Down syndrome (Cq, 34.52; GE/μL, 13.0) and in an individual of the non-syndromic control group (Cq, 34.78 Cq; GE/μL, 4.93). The prevalence of S. downii was ≤1% both in Down syndrome and in the general population, which did not allow for clinical-microbiological correlations to be established. This result was confirmed by detecting only one metagenome with an ANIm with approximately 95% homology and with 100% homology with ORFs that code class IIb lactobiocin A/cerein 7B bacteriocins among the 127 metagenomes of the “Human Microbiome Project” tested. Conclusions: The detection rate of S. downii in the supragingival dental plaque was very low, both in the Down syndrome individuals and in the non-syndromic controls. A clinical-microbiological correlation could therefore not be established.
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Affiliation(s)
- Eliane García-Mato
- Medical-Surgical Dentistry Research Group (OMEQUI), Health Research Institute of Santiago de Compostela (IDIS), University of Santiago de Compostela (USC), 15705 Santiago de Compostela, Spain; (E.G.-M.); (I.V.-A.); (J.L.-P.)
| | - Lucía Martínez-Lamas
- Clinical Microbiology, Microbiology and Infectiology Group, Galicia Sur Health Research Institute, Hospital Álvaro Cunqueiro, Complejo Hospitalario Universitario de Vigo, 36312 Vigo, Spain; (L.M.-L.); (M.Á.-F.)
| | - Maximiliano Álvarez-Fernández
- Clinical Microbiology, Microbiology and Infectiology Group, Galicia Sur Health Research Institute, Hospital Álvaro Cunqueiro, Complejo Hospitalario Universitario de Vigo, 36312 Vigo, Spain; (L.M.-L.); (M.Á.-F.)
| | - Iván Varela-Aneiros
- Medical-Surgical Dentistry Research Group (OMEQUI), Health Research Institute of Santiago de Compostela (IDIS), University of Santiago de Compostela (USC), 15705 Santiago de Compostela, Spain; (E.G.-M.); (I.V.-A.); (J.L.-P.)
| | - Marcio Diniz-Freitas
- Medical-Surgical Dentistry Research Group (OMEQUI), Health Research Institute of Santiago de Compostela (IDIS), University of Santiago de Compostela (USC), 15705 Santiago de Compostela, Spain; (E.G.-M.); (I.V.-A.); (J.L.-P.)
- Correspondence: (M.D.-F.); (P.D.-D.); Tel.: +34-881-812344 (P.D.-D.)
| | - Jacobo Limeres-Posse
- Medical-Surgical Dentistry Research Group (OMEQUI), Health Research Institute of Santiago de Compostela (IDIS), University of Santiago de Compostela (USC), 15705 Santiago de Compostela, Spain; (E.G.-M.); (I.V.-A.); (J.L.-P.)
| | - Pedro Diz-Dios
- Medical-Surgical Dentistry Research Group (OMEQUI), Health Research Institute of Santiago de Compostela (IDIS), University of Santiago de Compostela (USC), 15705 Santiago de Compostela, Spain; (E.G.-M.); (I.V.-A.); (J.L.-P.)
- Correspondence: (M.D.-F.); (P.D.-D.); Tel.: +34-881-812344 (P.D.-D.)
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Abstract
The potential contribution of pathogenic microbes to dementia-inducing disease is a subject of considerable importance. Alzheimer’s disease (AD) is a neurocognitive disease that slowly destroys brain function, leading to cognitive decline and behavioral and psychiatric disorders. The histopathology of AD is associated with neuronal loss and progressive synaptic dysfunction, accompanied by the deposition of amyloid-β (Aβ) peptide in the form of parenchymal plaques and abnormal aggregated tau protein in the form of neurofibrillary tangles. Observational, epidemiological, experimental, and pathological studies have generated evidence for the complexity and possible polymicrobial causality in dementia-inducing diseases. The AD pathogen hypothesis states that pathogens and microbes act as triggers, interacting with genetic factors to initiate the accumulation of Aβ, hyperphosphorylated tau protein (p-tau), and inflammation in the brain. Evidence indicates that Borrelia sp., HSV-1, VZV (HHV-2), HHV-6/7, oral pathogens, Chlamydophila pneumoniae, and Candida albicans can infect the central nervous system (CNS), evade the immune system, and consequently prevail in the AD brain. Researchers have made significant progress in understanding the multifactorial and overlapping factors that are thought to take part in the etiopathogenesis of dementia; however, the cause of AD remains unclear.
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An extensive description of the microbiological effects of silver diamine fluoride on dental biofilms using an oral in situ model. Sci Rep 2022; 12:7435. [PMID: 35523839 PMCID: PMC9076617 DOI: 10.1038/s41598-022-11477-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2022] [Accepted: 04/15/2022] [Indexed: 12/23/2022] Open
Abstract
Silver diamine fluoride (SDF) has been long studied in laboratories, and its clinical effectiveness in the treatment and prevention of root caries has been reported. In the present study, we assessed the microbiological effects of SDF on dental biofilms grown on demineralized dentin in situ. Specifically, demineralized bovine root dentin slabs used as biofilm substrates were treated with 38% SDF, and the biofilms formed after this treatment were analyzed via real-time PCR, DEAD/LIVE cell staining, and SEM. Next, the viable cell count was determined, and microbial profiles were compared using 16S rRNA gene sequencing. Untreated slabs were used as controls. We observed significant decreases in viable cell counts (p < 0.05), number of biofilm-forming cells (p < 0.01), biofilm thickness (p < 0.01), and high proportion of dead cells with SDF treatment (p < 0.01). The microcolonies in the SDF-treated biofilms showed less complexity, and only a limited number of genera were differentially abundant between the groups. Microbial diversity index comparisons showed no significant differences between the groups with respect to treatments days (p = 0.362). Thus, SDF negatively influenced dental biofilm growth on demineralized root dentin in situ; however, its antimicrobial action did not target a specific oral taxon.
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Meyer F, Enax J, Amaechi BT, Limeback H, Fabritius HO, Ganss B, Pawinska M, Paszynska E. Hydroxyapatite as Remineralization Agent for Children's Dental Care. FRONTIERS IN DENTAL MEDICINE 2022. [DOI: 10.3389/fdmed.2022.859560] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
Abstract
Children are prone to develop dental caries. This is supported by epidemiological data confirming early childhood caries (ECC) as a highly prevalent disease affecting more than every second child worldwide. ECC is known to result from an imbalance between re- and demineralization where demineralization dominates due to frequent acid production by cariogenic bacteria present in oral biofilms. The application of oral care formulations containing remineralizing agents helps to prevent dental caries. As young children are sensitive and usually swallow (intended or unintended) a majority of toothpaste or other oral care products during daily dental care, all ingredients, especially the actives, should be non-toxic. Biomimetic hydroxyapatite [HAP; Ca5(PO4)3(OH)] is known to have favorable remineralizing properties combined with an excellent biocompatibility, i.e., it is safe if accidently swallowed. Several clinical trials as well as in situ and in vitro studies have shown that HAP remineralizes enamel and dentin. Remineralization occurs due to deposition of HAP particles on tooth surfaces forming mineral-mineral bridges with enamel crystals, but also indirectly through calcium and phosphate ions release as well as HAP's buffering properties in acidic environments (i.e., in plaque). HAP induces a homogenous remineralization throughout the subsurface enamel lesions. This review summarizes the current evidence showing HAP as an effective remineralizing agent in oral care products for children. Additional studies showing also further beneficial effects of HAP such as the reduction of biofilm formation and the relief of hypersensitivity in children with molar incisor hypomineralization (MIH). It can be concluded that HAP is an effective and safe remineralizing agent for child dental care.
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Araújo SMP, da Silva GQTL, Costa EL, Nunes AMM, Ribeiro CCC. Pathways in the association between added sugar consumption, obesity in mother-child dyads, and chronic oral disease burden in early childhood. Eur J Oral Sci 2022; 130:e12847. [PMID: 34985797 DOI: 10.1111/eos.12847] [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: 12/08/2020] [Accepted: 11/15/2021] [Indexed: 11/28/2022]
Abstract
In this study, we modeled the pathways in the association of socioeconomic status, frequency of added sugar consumption, and obesity in mother-child dyads with chronic oral disease burden in early childhood using structural equation modeling. A population-based study was conducted on preschoolers from public daycare centers in São Luís, Brazil (n = 674) and their mothers. Chronic oral disease burden in early childhood was a latent variable, representing the shared variance of the following indicators: visible plaque index, gingivitis, and dental caries. A higher consumption frequency of added sugars by children [standardized regression coefficient (SC) = 0.219] explained the chronic oral disease burden. A higher consumption frequency of added sugars by mothers was associated with greater consumption of sugar by children (SC = 0.236), and indirectly with a greater chronic oral disease burden (SC = 0.052). Maternal obesity was associated with obesity in the offspring (SC = 0.130). The chronic oral disease burden is already present in early childhood and can be explained by the higher consumption of added sugars by the mother-child dyad. Approaches to preventing chronic oral diseases should focus on common risk factors, start early in life, and promote family involvement in this process.
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Sánchez MC, Velapatiño A, Llama-Palacios A, Valdés A, Cifuentes A, Ciudad MJ, Collado L. Metataxonomic and metabolomic evidence of biofilm homeostasis disruption related to caries: an in vitro study. Mol Oral Microbiol 2022; 37:81-96. [PMID: 35129864 PMCID: PMC9303636 DOI: 10.1111/omi.12363] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2021] [Revised: 01/19/2022] [Accepted: 01/24/2022] [Indexed: 11/30/2022]
Abstract
The ecological dysbiosis of a biofilm includes not only bacterial changes but also changes in their metabolism. Related to oral biofilms, changes in metabolic activity are crucial endpoint, linked directly to the pathogenicity of oral diseases. Despite the advances in caries research, detailed microbial and metabolomic etiology is yet to be fully clarified. To advance this knowledge, a meta‐taxonomic approach based on 16S rRNA gene sequencing and an untargeted metabolomic approach based on an ultra‐high performance liquid chromatography‐quadrupole time‐of‐flight mass spectrometry analysis (UHPLC/Q‐TOF‐MS) were conducted. To this end, an in vitro biofilm model derived from the saliva of healthy participants were developed, under commensal and cariogenic conditions by adding sucrose as the disease trigger. The cariogenic biofilms showed a significant increase of Firmicutes phyla (p = 0.019), due to the significant increase in the genus Streptococcus (p = 0.010), and Fusobacter (p < 0.001), by increase Fusobacterium (p < 0.001) and Sphingomonas (p = 0.024), while suffered a decrease in Actinobacteria (p < 0.001). As a consequence of the shift in microbiota composition, significant extracellular metabolomics changes were detected, showed 59 metabolites of the 120 identified significantly different in terms of relative abundance between the cariogenic/commensal biofilms (Rate of change > 2 and FDR < 0.05). Forty‐two metabolites were significantly higher in abundance in the cariogenic biofilms, whereas 17 metabolites were associated significantly with the commensal biofilms, principally related protein metabolism, with peptides and amino acids as protagonists, latter represented by histidine, arginine, l‐methionine, glutamic acid, and phenylalanine derivatives.
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Affiliation(s)
- María C Sánchez
- Department of Medicine, Faculty of Medicine, University Complutense, Madrid, Spain.,GINTRAMIS research group (Translational research group on microbiota and health), Faculty of Medicine, University Complutense, Madrid, Spain
| | - Angela Velapatiño
- Department of Medicine, Faculty of Medicine, University Complutense, Madrid, Spain
| | - Arancha Llama-Palacios
- Department of Medicine, Faculty of Medicine, University Complutense, Madrid, Spain.,GINTRAMIS research group (Translational research group on microbiota and health), Faculty of Medicine, University Complutense, Madrid, Spain
| | - Alberto Valdés
- Foodomics Laboratory, Institute of Food Science Research (CIAL, CSIC), Madrid, Spain
| | - Alejandro Cifuentes
- Foodomics Laboratory, Institute of Food Science Research (CIAL, CSIC), Madrid, Spain
| | - María J Ciudad
- Department of Medicine, Faculty of Medicine, University Complutense, Madrid, Spain.,GINTRAMIS research group (Translational research group on microbiota and health), Faculty of Medicine, University Complutense, Madrid, Spain
| | - Luis Collado
- Department of Medicine, Faculty of Medicine, University Complutense, Madrid, Spain.,GINTRAMIS research group (Translational research group on microbiota and health), Faculty of Medicine, University Complutense, Madrid, Spain
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Fungi—A Component of the Oral Microbiome Involved in Periodontal Diseases. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2022; 1373:113-138. [DOI: 10.1007/978-3-030-96881-6_6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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MANIFESTATIONS OF DYSTROPHY IN THE PERIODONTIUM. CLINICAL AND ULTRASTRUCTURAL STUDY. WORLD OF MEDICINE AND BIOLOGY 2022. [DOI: 10.26724/2079-8334-2022-4-82-53-58] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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Chen Y, Chen X, Huang X, Duan Y, Gao H, Gao X. Analysis of Salivary Microbiome and Its Association With Periodontitis in Patients With Obstructive Sleep Apnea. Front Cell Infect Microbiol 2021; 11:752475. [PMID: 34950605 PMCID: PMC8688821 DOI: 10.3389/fcimb.2021.752475] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2021] [Accepted: 11/16/2021] [Indexed: 12/30/2022] Open
Abstract
Objectives This study aimed to analyze the periodontal conditions of patients with obstructive sleep apnea (OSA) in relation to the salivary microbiome. Materials and Methods In total, 54 male adults (27 with OSA, 27 controls) completed this cross-sectional study. All participants were monitored by overnight polysomnography (PSG) and underwent full-mouth periodontal examination. Saliva samples were then collected, and the microbial 16S ribosomal RNA gene was sequenced. The data were analyzed to determine the microbial distribution and the community structure of the two groups. Results Demonstrated by alpha and beta diversity, the OSA group had a lower microbial richness and a lower observed species than the controls. There was no significant difference in the microbial species diversity or evenness between the OSA and the non-OSA groups. The OSA group had fewer operational taxonomic units (OTUs), and the distribution of microbiome showed that several gram-positive bacteria had higher abundance in the OSA group. As for periodontal pathogens, the relative abundance of Prevotella was significantly increased in the OSA group. No significant difference was observed in the relative abundance of other pathogens at either the genus or species level. Conclusions The salivary microbial community structure was altered in patients with OSA in terms of species richness and trans-habitat diversity, along with an increase in Prevotella, a specific periodontal pathogen. These findings might explain the high prevalence of periodontitis in OSA patients.
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Affiliation(s)
- Yanlong Chen
- Department of Orthodontics, Peking University School and Hospital of Stomatology, Beijing, China
| | - Xuehui Chen
- Department of Orthodontics, Peking University School and Hospital of Stomatology, Beijing, China
| | - Xin Huang
- Department of Orthodontics, Peking University School and Hospital of Stomatology, Beijing, China
| | - Ying Duan
- Department of Sleep Medicine, Airforce Medical Center, Beijing, China
| | - He Gao
- Department of Sleep Medicine, Airforce Medical Center, Beijing, China
| | - Xuemei Gao
- Department of Orthodontics, Peking University School and Hospital of Stomatology, Beijing, China
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Yaseen A, Mahafzah A, Dababseh D, Taim D, Hamdan AA, Al-Fraihat E, Hassona Y, Şahin GÖ, Santi-Rocca J, Sallam M. Oral Colonization by Entamoeba gingivalis and Trichomonas tenax: A PCR-Based Study in Health, Gingivitis, and Periodontitis. Front Cell Infect Microbiol 2021; 11:782805. [PMID: 34950608 PMCID: PMC8688919 DOI: 10.3389/fcimb.2021.782805] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2021] [Accepted: 11/22/2021] [Indexed: 12/13/2022] Open
Abstract
Background The etiology of periodontitis remains unclear, as is the place of gingivitis in its pathophysiology. A few studies linked the colonization by oral parasites (Entamoeba gingivalis and Trichomonas tenax) to periodontal disease and its severity. The aim of the current study was to estimate the prevalence of these oral parasites among healthy individuals, and in patients with gingivitis and periodontitis in Jordan. Methods The study was conducted during July 2019–December 2019. Samples were composed of saliva and periodontal material including dental plaque sampled with probes. The detection of oral parasites was done using conventional polymerase chain reaction (PCR). Results The total number of study participants was 237: healthy (n=94), gingivitis (n=53) and periodontitis (n=90). The prevalence of E. gingivalis was 88.9% among the periodontitis patients, 84.9% among the gingivitis patients and 47.9% in the healthy group. For T. tenax, the prevalence was 25.6% among the periodontitis patients, 5.7% among the gingivitis patients and 3.2% in the heathy group. Positivity for E. gingivalis was significantly correlated with the presence of periodontal disease compared to the healthy group with odds ratio (OR) of 6.6. Periodontal disease was also correlated with lower monthly income (OR=8.2), lack of dental care (OR=4.8), and history of diabetes mellitus (OR=4.5). Colonization by E. gingivalis was correlated with gingivitis (OR=6.1) compared to the healthy group. Colonization by E. gingivalis and T. tenax were significantly correlated with periodontitis (OR=6.4 for E. gingivalis, and OR=4.7, for T. tenax) compared to the healthy group. T. tenax was only detected among individuals with generalized periodontal disease compared to its total absence among those with localized disease (19.6% vs. 0.0%; p=0.039). The co-infection rate by the two oral parasites was 11.0%. Conclusions The higher prevalence of human oral parasites in periodontal disease compared to healthy individuals appears to be more than a mere marker for the disease and might also be associated with disease severity and potential for progression. Thus, the dogmatic view of E. gingivalis and T. tenax as commensals needs to be re-evaluated and their contribution to pathophysiology of periodontal diseases cannot be neglected.
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Affiliation(s)
- Alaa Yaseen
- Department of Pathology, Microbiology and Forensic Medicine, School of Medicine, The University of Jordan, Amman, Jordan
| | - Azmi Mahafzah
- Department of Pathology, Microbiology and Forensic Medicine, School of Medicine, The University of Jordan, Amman, Jordan
- Department of Clinical Laboratories and Forensic Medicine, Jordan University Hospital, Amman, Jordan
| | - Deema Dababseh
- School of Dentistry, The University of Jordan, Amman, Jordan
| | - Duaa Taim
- School of Dentistry, The University of Jordan, Amman, Jordan
| | - Ahmad A. Hamdan
- School of Dentistry, The University of Jordan, Amman, Jordan
- Department of Oral and Maxillofacial Surgery, Oral Medicine and Periodontology, Jordan University Hospital, Amman, Jordan
| | - Esraa Al-Fraihat
- Department of Pathology, Microbiology and Forensic Medicine, School of Medicine, The University of Jordan, Amman, Jordan
- Department of Clinical Laboratories and Forensic Medicine, Jordan University Hospital, Amman, Jordan
| | - Yazan Hassona
- School of Dentistry, The University of Jordan, Amman, Jordan
- Department of Oral and Maxillofacial Surgery, Oral Medicine and Periodontology, Jordan University Hospital, Amman, Jordan
| | - Gülşen Özkaya Şahin
- Department of Translational Medicine, Faculty of Medicine, Lund University, Malmö, Sweden
- Department of Clinical Microbiology, Laboratory Medicine, Skåne University Hospital, Lund, Sweden
| | | | - Malik Sallam
- Department of Pathology, Microbiology and Forensic Medicine, School of Medicine, The University of Jordan, Amman, Jordan
- Department of Clinical Laboratories and Forensic Medicine, Jordan University Hospital, Amman, Jordan
- Department of Translational Medicine, Faculty of Medicine, Lund University, Malmö, Sweden
- *Correspondence: Malik Sallam,
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González-Quintanilla D, Abásolo N, Astudillo P. Wnt Signaling in Periodontal Disease. FRONTIERS IN DENTAL MEDICINE 2021. [DOI: 10.3389/fdmed.2021.763308] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Periodontitis is a multifactorial and chronic condition associated with the formation of a dysbiotic biofilm, leading to a pro-inflammatory environment that can modulate cell signaling. The Wnt pathway plays fundamental roles during homeostasis and disease, and emerging evidence suggests its involvement in the maintenance of the periodontium and the development of periodontitis. Here, we summarize the role of the Wnt/β-catenin and non-canonical Wnt signaling pathways in periodontitis. The accumulated data suggests specific roles for each branch of the Wnt pathway. Wnt5a emerges as a critical player promoting periodontal ligament remodeling and impairing regenerative responses modulated by the Wnt/β-catenin pathway, such as alveolar bone formation. Collectively, the evidence suggests that achieving a proper balance between the Wnt/β-catenin and non-canonical pathways, rather than their independent modulation, might contribute to controlling the progression and severity of the periodontal disease.
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Mayumi S, Kuboniwa M, Sakanaka A, Hashino E, Ishikawa A, Ijima Y, Amano A. Potential of Prebiotic D-Tagatose for Prevention of Oral Disease. Front Cell Infect Microbiol 2021; 11:767944. [PMID: 34804997 PMCID: PMC8604381 DOI: 10.3389/fcimb.2021.767944] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2021] [Accepted: 10/14/2021] [Indexed: 12/25/2022] Open
Abstract
Recent studies have shown phenotypic and metabolic heterogeneity in related species including Streptococcus oralis, a typical oral commensal bacterium, Streptococcus mutans, a cariogenic bacterium, and Streptococcus gordonii, which functions as an accessory pathogen in periodontopathic biofilm. In this study, metabolites characteristically contained in the saliva of individuals with good oral hygiene were determined, after which the effects of an identified prebiotic candidate, D-tagatose, on phenotype, gene expression, and metabolic profiles of those three key bacterial species were investigated. Examinations of the saliva metabolome of 18 systemically healthy volunteers identified salivary D-tagatose as associated with lower dental biofilm abundance in the oral cavity (Spearman’s correlation coefficient; r = -0.603, p = 0.008), then the effects of D-tagatose on oral streptococci were analyzed in vitro. In chemically defined medium (CDM) containing D-tagatose as the sole carbohydrate source, S. mutans and S. gordonii each showed negligible biofilm formation, whereas significant biofilms were formed in cultures of S. oralis. Furthermore, even in the presence of glucose, S. mutans and S. gordonii showed growth suppression and decreases in the final viable cell count in a D-tagatose concentration-dependent manner. In contrast, no inhibitory effects of D-tagatose on the growth of S. oralis were observed. To investigate species-specific inhibition by D-tagatose, the metabolomic profiles of D-tagatose-treated S. mutans, S. gordonii, and S. oralis cells were examined. The intracellular amounts of pyruvate-derived amino acids in S. mutans and S. gordonii, but not in S. oralis, such as branched-chain amino acids and alanine, tended to decrease in the presence of D-tagatose. This phenomenon indicates that D-tagatose inhibits growth of those bacteria by affecting glycolysis and its downstream metabolism. In conclusion, the present study provides evidence that D-tagatose is abundant in saliva of individuals with good oral health. Additionally, experimental results demonstrated that D-tagatose selectively inhibits growth of the oral pathogens S. mutans and S. gordonii. In contrast, the oral commensal S. oralis seemed to be negligibly affected, thus highlighting the potential of administration of D-tagatose as an oral prebiotic for its ability to manipulate the metabolism of those targeted oral streptococci.
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Affiliation(s)
- Shota Mayumi
- Department of Preventive Dentistry, Osaka University Graduate School of Dentistry, Suita, Japan
| | - Masae Kuboniwa
- Department of Preventive Dentistry, Osaka University Graduate School of Dentistry, Suita, Japan
| | - Akito Sakanaka
- Department of Preventive Dentistry, Osaka University Graduate School of Dentistry, Suita, Japan
| | - Ei Hashino
- Department of Preventive Dentistry, Osaka University Graduate School of Dentistry, Suita, Japan
| | - Asuka Ishikawa
- Department of Preventive Dentistry, Osaka University Graduate School of Dentistry, Suita, Japan
| | - Yura Ijima
- Department of Preventive Dentistry, Osaka University Graduate School of Dentistry, Suita, Japan
| | - Atsuo Amano
- Department of Preventive Dentistry, Osaka University Graduate School of Dentistry, Suita, Japan
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Calheira MC, Trindade SC, Falcão MML, Barbosa LSC, Carvalho GRB, Machado PRL, Gomes-Filho IS, de Jesus Campos E, de Carvalho-Filho PC, Xavier MT, de Farias APF, Filho JTRR, de Santana Passos-Soares J. Immunoassay standardization for the detection of immunoglobulin A (IgA) against Porphyromonas gingivalis antigens in saliva of individuals with and without leprosy. AMB Express 2021; 11:152. [PMID: 34792664 PMCID: PMC8602710 DOI: 10.1186/s13568-021-01312-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2021] [Accepted: 11/04/2021] [Indexed: 01/14/2023] Open
Abstract
Leprosy reactions are immune processes that cause neural damage in individuals with leprosy. As periodontitis is an infectious disease related to its development, specific antibodies to periodontal pathogens must be evaluated to better understand the humoral mechanisms underlying this relationship. Therefore, the objective of this study was to standardize an immunoassay to measure IgA specific to P. gingivalis antigens in the saliva of individuals with leprosy. An ELISA checkerboard titration was performed. A validation test involving 53 individuals with leprosy, 24 with and 19 without periodontitis, was conducted and a ROC curve constructed to calculate sensitivity and specificity. The coefficient of the optical densities was 2.21 and 2.66 for P. gingivalis crude extract and the recombinant protein HmuY, respectively. Sensitivity and specificity for the P. gingivalis crude extract were 66.7% and 73.7%, respectively, and for HmuY, were 62.5% and 52.6%, respectively. Specific recognition of P. gingivalis occurred predominantly in individuals with periodontitis, which validates the use of this test for studying periodontitis in individuals with leprosy. Trial registration CAEE 64476117.3.0000.0049, 21/07/2017, retrospectively registered
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Henares D, Rocafort M, Brotons P, de Sevilla MF, Mira A, Launes C, Cabrera-Rubio R, Muñoz-Almagro C. Rapid Increase of Oral Bacteria in Nasopharyngeal Microbiota After Antibiotic Treatment in Children With Invasive Pneumococcal Disease. Front Cell Infect Microbiol 2021; 11:744727. [PMID: 34712623 PMCID: PMC8546175 DOI: 10.3389/fcimb.2021.744727] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2021] [Accepted: 09/10/2021] [Indexed: 01/04/2023] Open
Abstract
Introduction Antibiotics are commonly prescribed to young children for treating bacterial infections such as invasive pneumococcal disease (IPD) caused by Streptococcus pneumoniae. Despite the obvious benefits of antibiotics, little is known about their possible side effects on children’s nasopharyngeal microbiota. In other ecological niches, antibiotics have been described to perturb the balanced microbiota with short- and long-term effects on children’s health. The present study aims to evaluate and compare the nasopharyngeal microbiota of children with IPD and different degree of antibiotic exposure. Methods We investigated differences in nasopharyngeal microbiota of two groups of children <18 years with IPD: children not exposed to antibiotics before sample collection (n=27) compared to children previously exposed (n=54). Epidemiological/clinical data were collected from subjects, and microbiota was characterized by Illumina sequencing of V3-V4 amplicons of the 16S rRNA gene. Results Main epidemiological/clinical factors were similar across groups. Antibiotic-exposed patients were treated during a median of 4 days (IQR: 3–6) with at least one beta-lactam (100.0%). Higher bacterial richness and diversity were found in the group exposed to antibiotics. Different streptococcal amplicon sequence variants (ASVs) were differentially abundant across groups: antibiotic use was associated to lower relative abundances of Streptococcus ASV2 and Streptococcus ASV11 (phylogenetically close to S. pneumoniae), and higher relative abundances of Streptococcus ASV3 and Streptococcus ASV12 (phylogenetically close to viridans group streptococci). ASVs assigned to typical bacteria from the oral cavity, including Veillonella, Alloprevotella, Porphyromonas, Granulicatella, or Capnocytophaga, were associated to the antibiotic-exposed group. Common nosocomial genera such as Staphylococcus, Acinetobacter, and Pseudomonas were also enriched in the group exposed to antibiotics. Conclusion Our results point toward a reduction of S. pneumoniae abundance on the nasopharynx of children with IPD after antibiotic treatment and a short-term repopulation of this altered niche by oral and nosocomial bacteria. Future research studies will have to evaluate the clinical implications of these findings and if these populations would benefit from the probiotic/prebiotic administration or even from the improvement on oral hygiene practices frequently neglected among hospitalized children.
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Affiliation(s)
- Desiree Henares
- Institut de Recerca Sant Joan de Deu, Hospital Sant Joan de Deu, Barcelona, Spain.,CIBER of Epidemiology and Public Health (CIBERESP), Instituto de Salud Carlos III, Madrid, Spain
| | - Muntsa Rocafort
- Institut de Recerca Sant Joan de Deu, Hospital Sant Joan de Deu, Barcelona, Spain.,CIBER of Epidemiology and Public Health (CIBERESP), Instituto de Salud Carlos III, Madrid, Spain
| | - Pedro Brotons
- Institut de Recerca Sant Joan de Deu, Hospital Sant Joan de Deu, Barcelona, Spain.,CIBER of Epidemiology and Public Health (CIBERESP), Instituto de Salud Carlos III, Madrid, Spain.,School of Medicine, Universitat Internacional de Catalunya, Barcelona, Spain
| | - Mariona F de Sevilla
- CIBER of Epidemiology and Public Health (CIBERESP), Instituto de Salud Carlos III, Madrid, Spain.,Pediatric Department, Hospital Sant Joan de Deu, University of Barcelona, Barcelona, Spain
| | - Alex Mira
- CIBER of Epidemiology and Public Health (CIBERESP), Instituto de Salud Carlos III, Madrid, Spain.,Department of Health and Genomics, Center for Advanced Research in Public Health, Fundacion para el Fomento de la Investigacion Sanitaria y Biomedica de la Comunitat Valenciana (FISABIO), Valencia, Spain
| | - Cristian Launes
- Institut de Recerca Sant Joan de Deu, Hospital Sant Joan de Deu, Barcelona, Spain.,CIBER of Epidemiology and Public Health (CIBERESP), Instituto de Salud Carlos III, Madrid, Spain.,Pediatric Department, Hospital Sant Joan de Deu, University of Barcelona, Barcelona, Spain
| | - Raul Cabrera-Rubio
- Teagasc Food Research Centre (TEAGASC), Moorepark, Fermoy, Ireland.,APC Microbiome Institute, University College Cork, Cork, Ireland
| | - Carmen Muñoz-Almagro
- Institut de Recerca Sant Joan de Deu, Hospital Sant Joan de Deu, Barcelona, Spain.,CIBER of Epidemiology and Public Health (CIBERESP), Instituto de Salud Carlos III, Madrid, Spain.,School of Medicine, Universitat Internacional de Catalunya, Barcelona, Spain
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Kanjevac T, Taso E, Stefanovic V, Petkovic-Curcin A, Supic G, Markovic D, Djukic M, Djuran B, Vojvodic D, Sculean A, Rakic M. Estimating the Effects of Dental Caries and Its Restorative Treatment on Periodontal Inflammatory and Oxidative Status: A Short Controlled Longitudinal Study. Front Immunol 2021; 12:716359. [PMID: 34603290 PMCID: PMC8479168 DOI: 10.3389/fimmu.2021.716359] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2021] [Accepted: 08/17/2021] [Indexed: 02/05/2023] Open
Abstract
Dental caries and periodontitis are among the most common health conditions that are currently recognized as growing socio-economic problems relating to their increasing prevalence, negative socio-economic impact, and harmful effects on systemic health. So far, the exact effects of caries and standard restorative materials on periodontal inflammatory and oxidative status are not established. The present study aimed to investigate the effect of caries and its restoration using standard temporary and permanent filling materials on a panel of 16 inflammatory and oxidative markers in gingival crevicular fluid (GCF) of periodontally healthy individuals, 7 (D7) and 30 (D30) days post-restoration, while the intact teeth represented the control. One hundred ninety systemically and periodontally healthy patients with occlusal caries underwent standard cavity preparation and restorations with one of six standard temporary or permanent restorative material according to indication and randomization scheme. Interleukin (IL)-2, IFN- γ, IL-12, IL-17A, IL-13, IL-9, IL-10, IL-6, IL-5, IL-4, IL-22, TNF-α, IL1- β, thiobarbituric acid reactive substances, superoxide dismutase, and reduced form of glutathione were measured in GCF samples by flowcytometry and spectrophotometry in aid of commercial diagnostic assays. Caries affected teeth exhibited significantly increased IL-1 β, IL-17, IL-22, and TBARS and decreased IL-9 concentrations compared to healthy controls. Treatment generally resulted in an increased antioxidant capacity with exception of zinc-polycarboxylate cement showing distinctive inflammatory pattern. Comparison of inflammatory and oxidative profiles in temporary and permanent restorations showed material-specific patterning which was particularly expressed in temporary materials plausibly related to greater caries extension. Caries affected teeth exhibited a balanced inflammatory pattern in GCF, with a general tendency of homeostatic re-establishment following treatment. Restorative materials did not provide specific pathological effects, although some material groups did exhibit significantly elevated levels of inflammatory and oxidative markers compared to healthy controls, while the material-specific patterning was observed as well.
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Affiliation(s)
- Tatjana Kanjevac
- Department of Dentistry, Faculty of Medical Sciences, University of Kragujevac, Kragujevac, Serbia
| | - Ervin Taso
- Clinic for Stomatology, Military Medical Academy, Belgrade, Serbia
| | | | | | - Gordana Supic
- Institute for Medical Research, Military Medical Academy, Belgrade, Serbia
| | - Dejan Markovic
- Department of Paediatric and Preventive Dentistry, School of Dental Medicine, University of Belgrade, Belgrade, Serbia
| | - Mirjana Djukic
- Department for Toxicology, Faculty of Pharmacy, University of Belgrade, Belgrade, Serbia
| | - Boris Djuran
- Clinic for Stomatology, Military Medical Academy, Belgrade, Serbia
| | - Danilo Vojvodic
- Institute for Medical Research, Military Medical Academy, Belgrade, Serbia
| | - Anton Sculean
- Faculty of Dental Medicine, University of Bern, Bern, Switzerland
| | - Mia Rakic
- ETEP (Etiology and Therapy of Periodontal Diseases) Research Group, Faculty of Dentistry, University Complutense of Madrid, Madrid, Spain
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Winning L, Lundy FT, Blackwood B, McAuley DF, El Karim I. Oral health care for the critically ill: a narrative review. CRITICAL CARE : THE OFFICIAL JOURNAL OF THE CRITICAL CARE FORUM 2021; 25:353. [PMID: 34598718 PMCID: PMC8485109 DOI: 10.1186/s13054-021-03765-5] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 06/17/2021] [Accepted: 09/11/2021] [Indexed: 12/13/2022]
Abstract
Background The link between oral bacteria and respiratory infections is well documented. Dental plaque has the potential to be colonized by respiratory pathogens and this, together with microaspiration of oral bacteria, can lead to pneumonia particularly in the elderly and critically ill. The provision of adequate oral care is therefore essential for the maintenance of good oral health and the prevention of respiratory complications. Main body Numerous oral
care practices are utilised for intubated patients, with a clear lack of consensus on the best approach for oral care. This narrative review aims to explore the oral-lung connection and discuss in detail current oral care practices to identify shortcomings and offer suggestions for future research. The importance of adequate oral care has been recognised in guideline interventions for the prevention of pneumonia, but practices differ and controversy exists particularly regarding the use of chlorhexidine. The oral health assessment is also an important but often overlooked element of oral care that needs to be considered. Oral care plans should ideally be implemented on the basis of an individual oral health assessment. An oral health assessment prior to provision of oral care should identify patient needs and facilitate targeted oral care interventions. Conclusion Oral health is an important consideration in the management of the critically ill. Studies have suggested benefit in the reduction of respiratory complication such as Ventilator Associated Pneumonia associated with effective oral health care practices. However, at present there is no consensus as to the best way of providing optimal oral health care in the critically ill. Further research is needed to standardise oral health assessment and care practices to enable development of evidenced based personalised oral care for the critically ill.
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Affiliation(s)
- Lewis Winning
- Dublin Dental University Hospital, Trinity College Dublin, Dublin, Ireland
| | - Fionnuala T Lundy
- Centre for Experimental Medicine, School of Medicine, Dentistry and Biomedical Sciences, Queen's University Belfast, The Wellcome-Wolfson Building, 97 Lisburn Road, Belfast, BT9 7AE, Northern Ireland, UK
| | - Bronagh Blackwood
- Centre for Experimental Medicine, School of Medicine, Dentistry and Biomedical Sciences, Queen's University Belfast, The Wellcome-Wolfson Building, 97 Lisburn Road, Belfast, BT9 7AE, Northern Ireland, UK
| | - Daniel F McAuley
- Centre for Experimental Medicine, School of Medicine, Dentistry and Biomedical Sciences, Queen's University Belfast, The Wellcome-Wolfson Building, 97 Lisburn Road, Belfast, BT9 7AE, Northern Ireland, UK
| | - Ikhlas El Karim
- Centre for Experimental Medicine, School of Medicine, Dentistry and Biomedical Sciences, Queen's University Belfast, The Wellcome-Wolfson Building, 97 Lisburn Road, Belfast, BT9 7AE, Northern Ireland, UK.
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Metagenomic analysis of the salivary microbiota in patients with caries, periodontitis and comorbid diseases. J Dent Sci 2021; 16:1264-1273. [PMID: 34484595 PMCID: PMC8403802 DOI: 10.1016/j.jds.2020.12.002] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2020] [Revised: 11/30/2020] [Indexed: 11/24/2022] Open
Abstract
Background/purpose Previous studies have suggested that there is a mutual antagonism between caries and periodontitis. This research aimed to investigate the ecological connection and bacterial interaction of these two diseases. Materials and methods We profiled and analyzed the salivary microbiota from 124 individuals (including 38 caries patients, 34 periodontitis patients, 15 comorbid diseases patients, and 37 healthy controls) by using 16 S rRNA gene sequencing and bioinformatics approaches, and also quantified their salivary bacteria loads via quantitative real-time PCR. The putative biological functions of the salivary microbiome of the different groups were predicted by PICRUSt. Results We observed that both the total bacteria loads and the overall microbial richness in the saliva of the periodontitis group were higher than that in the healthy group. The principal coordinate analysis (PCoA) showed that the caries, periodontitis and healthy groups were separated from each other, and that the samples from comorbid diseases were located at the overlap of caries and periodontitis groups. Using LEfSe analysis, 20 differentially abundant genera were identified as potential biomarkers. These genera also performed complicated interactions among the four groups. Additionally, the PICRUSt analysis indicated caries-related and periodontitis-related functions (e.g., carbohydrate metabolism and bacteria proliferation) respectively. Conclusion We disclosed the significant differences in the salivary bacterial community under caries, periodontitis and comorbid diseases. The periodontitis group was marked by the increased complexity of the salivary microbiota. The result may have vital clinical significance to the screening and early treatment of caries-active and periodontitis-active individuals.
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The Current Strategies in Controlling Oral Diseases by Herbal and Chemical Materials. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2021; 2021:3423001. [PMID: 34471415 PMCID: PMC8405301 DOI: 10.1155/2021/3423001] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/18/2021] [Accepted: 07/26/2021] [Indexed: 01/23/2023]
Abstract
Dental plaque is a biofilm composed of complex microbial communities. It is the main cause of major dental diseases such as caries and periodontal diseases. In a healthy state, there is a delicate balance between the dental biofilm and host tissues. Nevertheless, due to the oral cavity changes, this biofilm can become pathogenic. The pathogenic biofilm shifts the balance from demineralization-remineralization to demineralization and results in dental caries. Dentists should consider caries as a result of biological processes of dental plaque and seek treatments for the etiologic factors, not merely look for the treatment of the outcome caused by biofilm, i.e., dental caries. Caries prevention strategies can be classified into three groups based on the role and responsibility of the individuals doing them: (1) community-based strategy, (2) dental professionals-based strategy, and (3) individual-based strategy. The community-based methods include fluoridation of water, salt, and milk. The dental professionals-based methods include professional tooth cleaning and use of varnish, fluoride gel and foam, fissure sealant, and antimicrobial agents. The individual-based (self-care) methods include the use of fluoride toothpaste, fluoride supplements, fluoride mouthwashes, fluoride gels, chlorhexidine gels and mouthwashes, slow-release fluoride devices, oral hygiene, diet control, and noncariogenic sweeteners such as xylitol. This study aimed to study the research in the recent five years (2015–2020) to identify the characteristics of dental biofilm and its role in dental caries and explore the employed approaches to prevent the related infections.
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