51
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Liang J, Peng X, Zhou X, Zou J, Cheng L. Emerging Applications of Drug Delivery Systems in Oral Infectious Diseases Prevention and Treatment. Molecules 2020; 25:E516. [PMID: 31991678 PMCID: PMC7038021 DOI: 10.3390/molecules25030516] [Citation(s) in RCA: 55] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2019] [Revised: 01/17/2020] [Accepted: 01/20/2020] [Indexed: 12/27/2022] Open
Abstract
The oral cavity is a unique complex ecosystem colonized with huge numbers of microorganism species. Oral cavities are closely associated with oral health and sequentially with systemic health. Many factors might cause the shift of composition of oral microbiota, thus leading to the dysbiosis of oral micro-environment and oral infectious diseases. Local therapies and dental hygiene procedures are the main kinds of treatment. Currently, oral drug delivery systems (DDS) have drawn great attention, and are considered as important adjuvant therapy for oral infectious diseases. DDS are devices that could transport and release the therapeutic drugs or bioactive agents to a certain site and a certain rate in vivo. They could significantly increase the therapeutic effect and reduce the side effect compared with traditional medicine. In the review, emerging recent applications of DDS in the treatment for oral infectious diseases have been summarized, including dental caries, periodontitis, peri-implantitis and oral candidiasis. Furthermore, oral stimuli-responsive DDS, also known as "smart" DDS, have been reported recently, which could react to oral environment and provide more accurate drug delivery or release. In this article, oral smart DDS have also been reviewed. The limits have been discussed, and the research potential demonstrates good prospects.
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Affiliation(s)
| | | | | | - Jing Zou
- State Key Laboratory of Oral Diseases& West China School of Stomatology& National Clinical Research Center for Oral Diseases, Sichuan University, Chengdu 610041, China; (J.L.); (X.P.); (X.Z.)
| | - Lei Cheng
- State Key Laboratory of Oral Diseases& West China School of Stomatology& National Clinical Research Center for Oral Diseases, Sichuan University, Chengdu 610041, China; (J.L.); (X.P.); (X.Z.)
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52
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Liu Y, Liu Q, Li Z, Acharya A, Chen D, Chen Z, Mattheos N, Chen Z, Huang B. Long non-coding RNA and mRNA expression profiles in peri-implantitis vs periodontitis. J Periodontal Res 2019; 55:342-353. [PMID: 31853997 DOI: 10.1111/jre.12718] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2019] [Revised: 11/06/2019] [Accepted: 11/13/2019] [Indexed: 12/16/2022]
Abstract
BACKGROUND AND OBJECTIVE Peri-implantitis is a biofilm-mediated infectious disease that results in progressive loss of implant-supporting bone. As compared to its analogue periodontitis, peri-implantitis is generally known to be more aggressive, with comparatively rapid progression and less predictable treatment outcomes, especially when advanced. An understanding of molecular mechanisms underpinning the similarities and differences between peri-implantitis and periodontitis is essential to develop novel management strategies. This study aimed to compare long non-coding RNAs (lncRNAs) and messenger RNA (mRNA) expression profiles between peri-implantitis and periodontitis. METHODS Inflamed soft tissue from peri-implantitis and periodontitis lesions, and healthy gingival tissue controls were analyzed by microarray. Cluster graphs, gene ontology (GO) analysis, and pathway analysis were performed. Quantitative real-time PCR was employed to verify microarray results. The expression levels of RANKL and OPG in the three tissue types were also evaluated, using qRT-PCR. Coding non-coding (CNC) network analyses were performed. RESULTS Microarray analyses revealed 1079 lncRNAs and 1003 mRNAs as differentially expressed in peri-implantitis when compared to periodontitis. The cyclooxygenase-2 pathway was the most up-regulated biological process in peri-implantitis as compared to periodontitis, whereas hemidesmosome assembly was the most down-regulated pathway. Osteoclast differentiation was relatively up-regulated, and RANKL/OPG ratio was higher in peri-implantitis than in periodontitis. CONCLUSIONS The study demonstrated that peri-implantitis and periodontitis exhibit significantly different lncRNA and mRNA expression profiles, suggesting that osteoclast differentiation-related pathways are comparatively more active in peri-implantitis. These data highlight potential molecular targets for periodontitis and peri-implantitis therapy development.
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Affiliation(s)
- Yudong Liu
- Guanghua School of Stomatology, Hospital of Stomatology, Sun Yat-sen University, Guangzhou, China.,Guangdong Provincial Key Laboratory of Stomatology, Guangzhou, China
| | - Qifan Liu
- Guanghua School of Stomatology, Hospital of Stomatology, Sun Yat-sen University, Guangzhou, China.,Guangdong Provincial Key Laboratory of Stomatology, Guangzhou, China
| | - Zhipeng Li
- Guanghua School of Stomatology, Hospital of Stomatology, Sun Yat-sen University, Guangzhou, China.,Guangdong Provincial Key Laboratory of Stomatology, Guangzhou, China
| | - Aneesha Acharya
- Faculty of Dentistry, The University of Hong Kong, Hong Kong, China.,Department of Periodontology, Dr D Y Patil Vidyapeeth, Pune, India
| | - Danying Chen
- Guanghua School of Stomatology, Hospital of Stomatology, Sun Yat-sen University, Guangzhou, China.,Guangdong Provincial Key Laboratory of Stomatology, Guangzhou, China
| | - Zetao Chen
- Guanghua School of Stomatology, Hospital of Stomatology, Sun Yat-sen University, Guangzhou, China.,Guangdong Provincial Key Laboratory of Stomatology, Guangzhou, China
| | - Nikos Mattheos
- Faculty of Dentistry, The University of Hong Kong, Hong Kong, China
| | - Zhuofan Chen
- Guanghua School of Stomatology, Hospital of Stomatology, Sun Yat-sen University, Guangzhou, China.,Guangdong Provincial Key Laboratory of Stomatology, Guangzhou, China
| | - Baoxin Huang
- Guanghua School of Stomatology, Hospital of Stomatology, Sun Yat-sen University, Guangzhou, China.,Guangdong Provincial Key Laboratory of Stomatology, Guangzhou, China
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53
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Panda M, Rai AK, Rahman T, Das A, Das R, Sarma A, Kataki AC, Chattopadhyay I. Alterations of salivary microbial community associated with oropharyngeal and hypopharyngeal squamous cell carcinoma patients. Arch Microbiol 2019; 202:785-805. [PMID: 31832691 DOI: 10.1007/s00203-019-01790-1] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2019] [Revised: 11/20/2019] [Accepted: 12/03/2019] [Indexed: 02/06/2023]
Abstract
The highest number (35.1% of global incident cases) of new oropharyngeal (OP) and hypopharyngeal (HP) cancer cases was reported in South-Central Asia. The highest incidence of HP cancer in India was reported in East Khasi Hills District of Meghalaya, Aizawl District of Mizoram, and Kamrup Urban District of Assam. HP and OP cancer showed the highest mortality rate, worst prognoses and the highest rate of nodal metastases and distant metastases. Thus, research is required to detect specific biomarkers for early prevention and diagnosis for these cancers. Oral microbiome signatures in saliva are considered as a potential diagnostic biomarker for OP and HP cancer. Bacterial profile alterations in OP and HP cancer have not been reported in India population, to establish the association of oral bacteria in the progression of OP and HP cancer; we studied bacterial communities in saliva of eight OP and seven HP cancer patients as compared to healthy controls using 16S rRNA V3-V4 region sequencing. The higher abundance of Haemophilus parainfluenzae, Haemophilus influenzae and Prevotella copri and lower abundance of Rothia mucilaginosa, Aggregatibacter segnis, Veillonella dispar, Prevotella nanceiensis, Rothia aeria, Capnocytophaga ochracea, Neisseria bacilliformis, Prevotella nigrescens and Selenomonas noxia in saliva of OP and HP cancer patients may be considered as a non-invasive diagnostic biomarker for OP and HP cancer patients. Streptococcus anginosus may be considered as a non-invasive diagnostic biomarker for OP cancer patients only. Therefore, evaluation of salivary microbial biomarkers may be informative to understand the pathobiology and carcinogenesis of OP and HP cancer.
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Affiliation(s)
- Madhusmita Panda
- Department of Life Sciences, School of Life Sciences, Central University of Tamil Nadu, Thiruvarur, 610005, India
| | - Avdhesh Kumar Rai
- Dr. B. Borooah Cancer Institute, A. K. Azad Road, Gopinath Nagar, Guwahati, Assam, 781016, India
| | - Tashnin Rahman
- Dr. B. Borooah Cancer Institute, A. K. Azad Road, Gopinath Nagar, Guwahati, Assam, 781016, India
| | - Ashok Das
- Dr. B. Borooah Cancer Institute, A. K. Azad Road, Gopinath Nagar, Guwahati, Assam, 781016, India
| | - Rajjyoti Das
- Dr. B. Borooah Cancer Institute, A. K. Azad Road, Gopinath Nagar, Guwahati, Assam, 781016, India
| | - Anupam Sarma
- Dr. B. Borooah Cancer Institute, A. K. Azad Road, Gopinath Nagar, Guwahati, Assam, 781016, India
| | - Amal Ch Kataki
- Dr. B. Borooah Cancer Institute, A. K. Azad Road, Gopinath Nagar, Guwahati, Assam, 781016, India
| | - Indranil Chattopadhyay
- Department of Life Sciences, School of Life Sciences, Central University of Tamil Nadu, Thiruvarur, 610005, India.
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54
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Carinci F, Romanos GE, Scapoli L. Molecular tools for preventing and improving diagnosis of peri-implant diseases. Periodontol 2000 2019; 81:41-47. [PMID: 31407432 DOI: 10.1111/prd.12281] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Peri-implantitis is an inflammatory disease of tissues surrounding osseointegrated dental implants. Inflammation affecting soft and hard peri-implant tissues can cause alveolar bone resorption and subsequent implant loss. Clinical surveillance and early diagnosis are of paramount importance to reduce clinical failures and improve implant survival. Current diagnosis of implants is based on clinical and radiological signs. Molecular tests are an emerging diagnostic methodology, which potentially can help to detect and prevent early peri-implantitis and monitor the efficacy of therapy as well. A plethora of potential biomarkers are potentially available to support the clinical diagnosis of peri-implantitis. However, conflicting diagnostic conclusions have been reached, probably related to weak statistical results due to limited sample size or disease heterogeneity. The present paper reviews candidate diagnostic biomarkers for peri-implantitis, including infective agents, genetic susceptibility factors, and key proteins related to inflammation and tissue remodeling.
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Affiliation(s)
- Francesco Carinci
- Department of Morphology, Surgery and Experimental Medicine, University of Ferrara, Ferrara, Italy
| | - Georgios E Romanos
- Department of Periodontology, School of Dental Medicine, Stony Brook University, Stony Brook, NY, USA
| | - Luca Scapoli
- Department of Experimental, Diagnostic and Specialty Medicine, University of Bologna, Bologna, Italy
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55
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Albayrak L, Khanipov K, Golovko G, Fofanov Y. Detection of multi-dimensional co-exclusion patterns in microbial communities. Bioinformatics 2019; 34:3695-3701. [PMID: 29878050 DOI: 10.1093/bioinformatics/bty414] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2017] [Accepted: 06/01/2018] [Indexed: 01/08/2023] Open
Abstract
Motivation Identification of complex relationships among members of microbial communities is key to understand and control the microbiota. Co-exclusion is arguably one of the most important patterns reflecting micro-organisms' intolerance to each other's presence. Knowing these relations opens an opportunity to manipulate microbiotas, personalize anti-microbial and probiotic treatments as well as guide microbiota transplantation. The co-exclusion pattern however, cannot be appropriately described by a linear function nor its strength be estimated using covariance or (negative) Pearson and Spearman correlation coefficients. This manuscript proposes a way to quantify the strength and evaluate the statistical significance of co-exclusion patterns between two, three or more variables describing a microbiota and allows one to extend analysis beyond micro-organism abundance by including other microbiome associated measurements such as, pH, temperature etc., as well as estimate the expected numbers of false positive co-exclusion patterns in a co-exclusion network. Results The implemented computational pipeline (CoEx) tested against 2380 microbial profiles (samples) from The Human Microbiome Project resulted in body-site specific pairwise co-exclusion patterns. Availability and implementation C++ source code for calculation of the score and P-value for two, three and four dimensional co-exclusion patterns as well as source code and executable files for the CoEx pipeline are available at https://scsb.utmb.edu/labgroups/fofanov/co-exclusion_in_microbial_communities.asp. Supplementary information Supplementary data are available at Bioinformatics online.
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Affiliation(s)
- Levent Albayrak
- Department of Pharmacology and Toxicology, University of Texas Medical Branch-Galveston, Galveston, USA.,Sealy Center for Structural Biology and Molecular Biophysics, University of Texas Medical Branch-Galveston, Galveston, USA
| | - Kamil Khanipov
- Department of Pharmacology and Toxicology, University of Texas Medical Branch-Galveston, Galveston, USA.,Sealy Center for Structural Biology and Molecular Biophysics, University of Texas Medical Branch-Galveston, Galveston, USA.,Department of Computer Science, University of Houston, Houston, USA
| | - George Golovko
- Department of Pharmacology and Toxicology, University of Texas Medical Branch-Galveston, Galveston, USA.,Sealy Center for Structural Biology and Molecular Biophysics, University of Texas Medical Branch-Galveston, Galveston, USA
| | - Yuriy Fofanov
- Department of Pharmacology and Toxicology, University of Texas Medical Branch-Galveston, Galveston, USA.,Sealy Center for Structural Biology and Molecular Biophysics, University of Texas Medical Branch-Galveston, Galveston, USA
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56
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Chemical Stability and Antimicrobial Activity of Plasma-Sprayed Cerium Oxide–Incorporated Calcium Silicate Coating in Dental Implants. IMPLANT DENT 2019; 28:564-570. [PMID: 31517651 DOI: 10.1097/id.0000000000000937] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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57
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Ikeda E, Shiba T, Ikeda Y, Suda W, Nakasato A, Takeuchi Y, Azuma M, Hattori M, Izumi Y. Japanese subgingival microbiota in health vs disease and their roles in predicted functions associated with periodontitis. Odontology 2019; 108:280-291. [PMID: 31502122 DOI: 10.1007/s10266-019-00452-4] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2018] [Accepted: 08/05/2019] [Indexed: 12/12/2022]
Abstract
The present study aimed to identify and compare the microbial signatures between periodontally healthy and periodontitis subjects using 454 sequences of 16S rRNA genes. Subgingival plaque samples were collected from ten periodontally healthy subjects and ten matched chronic periodontitis patients. Bacterial DNA was extracted and next-generation sequencing of 16S rRNA genes was performed. The microbial composition differed between healthy subjects and periodontitis patients at all phylogenetic levels. Particularly, 16 species, including Lautropia mirabilis and Neisseria subflava predominated in healthy subjects, whereas nine species, including Porphyromonas gingivalis and Filifactor alocis predominated in periodontitis. UniFrac, a principal coordinate and network analysis, confirmed distinct community profiles in healthy subjects and periodontitis patients. Using predicted function profiling, pathways involved in phenylpropanoid, GPI-anchor biosynthesis, and metabolism of alanine, arginine, aspartate, butanoate, cyanoamino acid, fatty acid, glutamate, methane, proline, and vitamin B6 were significantly over-represented in periodontitis patients. These results highlight the oral microbiota alterations in microbial composition in periodontitis and suggest the genes and metabolic pathways associated with health and periodontitis. Our findings help to further elucidate microbial composition and interactions in health and periodontitis.
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Affiliation(s)
- Eri Ikeda
- Department of Periodontology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo, Tokyo, 113-8549, Japan
| | - Takahiko Shiba
- Department of Periodontology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo, Tokyo, 113-8549, Japan
| | - Yuichi Ikeda
- Department of Periodontology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo, Tokyo, 113-8549, Japan
| | - Wataru Suda
- RIKEN Center for Integrative Medical Sciences, 1-7-22 Suehiro-cho, Tsurumi, Yokohama, Kanagawa, 230-0045, Japan.,Department of Microbiology and Immunology, Keio University School of Medicine, 35 Shinanomachi, Shinjuku, Tokyo, 160-0016, Japan
| | - Akinori Nakasato
- Department of Periodontology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo, Tokyo, 113-8549, Japan
| | - Yasuo Takeuchi
- Department of Periodontology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo, Tokyo, 113-8549, Japan.
| | - Miyuki Azuma
- Department of Molecular Immunology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo, Tokyo, 113-8549, Japan
| | - Masahira Hattori
- RIKEN Center for Integrative Medical Sciences, 1-7-22 Suehiro-cho, Tsurumi, Yokohama, Kanagawa, 230-0045, Japan.,Faculty of Science and Engineering, Graduate School of Advanced Science and Engineering, Waseda University, 3-4-1 Okubo, Shinjuku, Tokyo, 169-8555, Japan
| | - Yuichi Izumi
- Department of Periodontology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo, Tokyo, 113-8549, Japan.,Oral Care Perio Center, Southern TOHOKU General Hospital, Southern TOHOKU Research Institute for Neuroscience, 7-115 Yatsuyamada, Koriyama, Fukushima, 963-8052, Japan
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58
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Fretibacterium sp. human oral taxon 360 is a novel biomarker for periodontitis screening in the Japanese population. PLoS One 2019; 14:e0218266. [PMID: 31216300 PMCID: PMC6584019 DOI: 10.1371/journal.pone.0218266] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2018] [Accepted: 05/29/2019] [Indexed: 01/21/2023] Open
Abstract
Background Periodontitis is a common inflammatory disease, leading to bone destruction and tooth loss. Screening for periodontitis is important in preventing the progress of this disease. Various types of bacteria have been examined as potential screening targets, but only culturable pathogenic bacteria have been considered candidates. Recently, the various uncultivable bacteria have been identified in microbiome studies, but the value of these bacteria in periodontitis screening remains unknown. Objectives The aim of this study was to evaluate the diagnostic use of uncultivable bacteria Fretibacterium sp. HOT 360 and TM7 sp. HOT 356 for periodontitis screening in the Japanese population. Material and methods Stimulated saliva samples were collected from 217 participants (periodontitis group, n = 157; healthy group, n = 60). The two uncultivable bacterial species selected were: Fretibacterium sp. human oral taxon 360 (Fretibacterium sp. HOT 360) and TM7 sp. human oral taxon 356 (TM7 sp. HOT 356). The levels of these two bacterial species were compared with those of Porphyromonas gingivalis (P. gingivalis), a keystone pathogen in periodontitis. These three species of bacteria were then quantified using qualitative real-time polymerase chain reaction (qPCR) with specific primers and Taqman probes. Statistical analysis was performed by SPSS 20.0 software. P value was statistically significant at .05. Results The populations of uncultivable bacterial species TM7 sp. HOT 356 and Fretibacterium sp. HOT 360 were significantly higher in periodontitis group than in healthy group. Only Fretibacterium sp. HOT 360 showed a significantly positive correlation with such periodontal parameters as probing pocket depth (PPD) and bleeding on probing (BOP). Conclusion These findings indicate that uncultivable bacteria Fretibacterium sp. HOT 360 can be used as a saliva-based diagnostic bacterial biomarker for periodontitis screening.
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59
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Yu XL, Chan Y, Zhuang L, Lai HC, Lang NP, Keung Leung W, Watt RM. Intra-oral single-site comparisons of periodontal and peri-implant microbiota in health and disease. Clin Oral Implants Res 2019; 30:760-776. [PMID: 31102416 DOI: 10.1111/clr.13459] [Citation(s) in RCA: 55] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2018] [Revised: 05/02/2019] [Accepted: 05/02/2019] [Indexed: 01/01/2023]
Abstract
OBJECTIVE Periodontitis and peri-implantitis are oral infectious-inflammatory diseases that share similarities in their pathology and etiology. Our objective was to characterize the single-site subgingival and submucosal microbiomes of implant-rehabilitated, partially dentate Chinese subjects (n = 18) presenting with both periodontitis and peri-implantitis. MATERIALS AND METHODS Subgingival/submucosal plaque samples were collected from four clinically distinct sites in each subject: peri-implantitis submucosa (DI), periodontal pocket (DT), clinically healthy (unaffected) peri-implant submucosa (HI), and clinically healthy (unaffected) subgingival sulcus (HT). The bacterial microbiota present was analyzed using Illumina MiSeq sequencing. RESULTS Twenty-six phyla and 5,726 operational taxonomic units (OTUs, 97% sequence similarity cutoff) were identified. Firmicutes, Proteobacteria, Fusobacteria, Bacteroidetes, Actinobacteria, Synergistetes, TM7, and Spirochaetes comprised 99.6% of the total reads detected. Bacterial communities within the DI, DT, HI, and HT sites shared high levels of taxonomic similarity. Thirty-one "core species" were present in >90% sites, with Streptococcus infantis/mitis/oralis (HMT-070/HMT-071/HMT-638/HMT-677) and Fusobacterium sp. HMT-203/HMT-698 being particularly prevalent and abundant. Beta-diversity analyses (PERMANOVA test, weighted UniFrac) revealed the largest variance in the microbiota was at the subject level (46%), followed by periodontal health status (4%). Differing sets of OTUs were associated with periodontitis and peri-implantitis sites, respectively. This included putative "periodontopathogens," such as Prevotella, Porphyromonas, Tannerella, Bacteroidetes [G-5], and Treponema spp. Interaction network analysis identified several putative patterns underlying dysbiosis in periodontitis/peri-implantitis sites. CONCLUSIONS Species (OTU) composition of the periodontal and peri-implant microbiota varied widely between subjects. The inter-subject variations in subgingival/submucosal microbiome composition outweighed differences observed between implant vs. tooth sites, or between diseased vs. healthy (unaffected) peri-implant/periodontal sites.
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Affiliation(s)
- Xiao-Lin Yu
- Faculty of Dentistry, The University of Hong Kong, Hong Kong SAR, China.,Department of Oral Implantology, Guanghua School of Stomatology, Hospital of Stomatology, Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-Sen University, Guangzhou, China
| | - Yuki Chan
- Faculty of Dentistry, The University of Hong Kong, Hong Kong SAR, China
| | | | - Hong-Chang Lai
- Department of Oral and Maxillo-facial Implantology, Shanghai Ninth People's Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai, China
| | | | - Wai Keung Leung
- Faculty of Dentistry, The University of Hong Kong, Hong Kong SAR, China
| | - Rory M Watt
- Faculty of Dentistry, The University of Hong Kong, Hong Kong SAR, China
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Bermejo P, Sánchez MC, Llama‐Palacios A, Figuero E, Herrera D, Sanz M. Topographic characterization of multispecies biofilms growing on dental implant surfaces: An in vitro model. Clin Oral Implants Res 2019; 30:229-241. [DOI: 10.1111/clr.13409] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2018] [Revised: 01/17/2019] [Accepted: 01/17/2019] [Indexed: 12/24/2022]
Affiliation(s)
- Patricia Bermejo
- Laboratory of Oral Microbiology, Faculty of Odontology University Complutense Madrid Spain
| | - María Carmen Sánchez
- Laboratory of Oral Microbiology, Faculty of Odontology University Complutense Madrid Spain
- ETEP (Etiology and Therapy of Periodontal Diseases) Research Group University Complutense Madrid Spain
| | - Arancha Llama‐Palacios
- Laboratory of Oral Microbiology, Faculty of Odontology University Complutense Madrid Spain
- ETEP (Etiology and Therapy of Periodontal Diseases) Research Group University Complutense Madrid Spain
| | - Elena Figuero
- ETEP (Etiology and Therapy of Periodontal Diseases) Research Group University Complutense Madrid Spain
| | - David Herrera
- ETEP (Etiology and Therapy of Periodontal Diseases) Research Group University Complutense Madrid Spain
| | - Mariano Sanz
- ETEP (Etiology and Therapy of Periodontal Diseases) Research Group University Complutense Madrid Spain
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61
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Cheng L, Yu HY, Wu Y, Bao CY, Yang BC, Man Y, Sun Y, Yan XL, Zhou XD. [A review of peri-implant microbiology]. HUA XI KOU QIANG YI XUE ZA ZHI = HUAXI KOUQIANG YIXUE ZAZHI = WEST CHINA JOURNAL OF STOMATOLOGY 2019; 37:7-12. [PMID: 30854811 DOI: 10.7518/hxkq.2019.01.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Dental implants represent the majority of treatment strategies used to replace missing teeth. However, peri-implant diseases caused by disturbance in peri-implant microbiological balance are among the reasons for implant failure. Since the 1980s, peri-implant microorganisms have been a hot research topic in dental microbiology. The bacterial ecology between the disease and health largely differs, which directly or indirectly increases the risk of peri-implant diseases. Accordingly, the determination of the 'core microbiome' of peri-implantitis and peri-implant mucositis is a key point of recent research.
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Affiliation(s)
- Lei Cheng
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases & Dept. of Cariology and Endodontics, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China
| | - Hai-Yang Yu
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases & Dept. of Prosthodontics, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China
| | - Yao Wu
- Engineering Research Center in Biomaterials, Sichuan University & Sichuan Guojia Biomaterials Engineering Technology Limited Company, Chengdu 610064, China
| | - Chong-Yun Bao
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases & West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China
| | - Bang-Cheng Yang
- Engineering Research Center in Biomaterials, Sichuan University & Sichuan Guojia Biomaterials Engineering Technology Limited Company, Chengdu 610064, China
| | - Yi Man
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases & Dept. of Implant, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China
| | - Yao Sun
- Dept. of Implant, The Affiliated Stomatology Hospital of Tongji University, Shanghai Engineering Research Center of Tooth Restoration and Regeneration, Shanghai 200072, China
| | - Xiao-Li Yan
- Chengdu Puchuan Biomaterials Corporation, Ltd, Chengdu 611731, China
| | - Xue-Dong Zhou
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases & Dept. of Cariology and Endodontics, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China
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62
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Alotaibi M, Moran G, Grufferty B, Renvert S, Polyzois I. The effect of a decontamination protocol on contaminated titanium dental implant surfaces with different surface topography in edentulous patients. Acta Odontol Scand 2019; 77:66-75. [PMID: 30264636 DOI: 10.1080/00016357.2018.1504986] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Objectives: To investigate if it is possible to achieve complete decontamination of dental implant surfaces with different surface characteristics.Materials and methods: Twelve implant pieces with an Osseotite® surface and 12 implant pieces with a Ti-Unite® surface were attached on to the complete lower dentures of six patients and were allowed to accumulate plaque for 30 days. When retrieved, the implant decontamination protocol used, involved both mechanical (PeriBrush™) and chemical (3% H2O2) decontamination. The number of colony forming units per millilitre was determined and the dominant micro-organisms in selected samples was identified by 16s rRNA gene amplicon sequencing. The effect of the titanium brush on the implant surface was examined by SEM.Results: Complete decontamination was achieved in five out of 24 implants (four Osseotite® and one Ti-Unite®). The mean CFU/ml detected after decontamination were 464.48 for Osseotite® and 729.09 for Ti-Unite® implants. On the surface of the implants in which complete decontamination was not achieved, all of the predominant bacteria identified were streptococci except for one which was identified as micrococcus. SEM images revealed that the surface features of the decontaminated implants were not significantly altered.Conclusions: Mechanical decontamination using a titanium brush supplemented with chemical treatment for one minute (3% H2O2) can achieve complete decontamination of implant surfaces in edentulous patients.
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Affiliation(s)
- Mohammad Alotaibi
- Department of Restorative Dentistry and Periodontology, Dublin Dental University Hospital, Trinity College, Dublin, Ireland
| | - Gary Moran
- Microbiology Research Unit, Division of Oral Biosciences, Dublin Dental University Hospital Trinity College, Dublin, Ireland
| | - Brendan Grufferty
- Department of Restorative Dentistry and Periodontology, Dublin Dental University Hospital, Trinity College, Dublin, Ireland
| | - Stefan Renvert
- Department of Restorative Dentistry and Periodontology, Dublin Dental University Hospital, Trinity College, Dublin, Ireland
- Department of Health Sciences, Kristianstad University, Kristianstad, Sweden
- Blekinge Institute of Technology, Karlskrona, Sweden
| | - Ioannis Polyzois
- Department of Restorative Dentistry and Periodontology, Dublin Dental University Hospital, Trinity College, Dublin, Ireland
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63
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Chigasaki O, Takeuchi Y, Aoki A, Sasaki Y, Mizutani K, Aoyama N, Ikeda Y, Gokyu M, Umeda M, Ishikawa I, Izumi Y. A cross-sectional study on the periodontal status and prevalence of red complex periodontal pathogens in a Japanese population. J Oral Sci 2018; 60:293-303. [PMID: 29925714 DOI: 10.2334/josnusd.17-0223] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
Abstract
This large-scale study cross-sectionally examined the periodontal status and prevalence of "red complex" bacteria (Porphyromonas gingivalis, Treponema denticola, and Tannerella forsythia) in Japanese adults. A total of 977 participants were enrolled in the study. Probing depth (PD), bleeding on probing (BOP), and bone crest level (BCL) were recorded, and the presence of red complex bacteria in the saliva was examined using polymerase chain reaction. The mean BCL value and the percentage of sites with a PD ≥4 mm or the presence of BOP were significantly higher in older participants. The detection rates of P. gingivalis, T. denticola, and T. forsythia were 46.3%, 76.4%, and 61.1%, respectively. The P. gingivalis detection rate significantly increased with age, while those of T. denticola and T. forsythia were comparably high for all age groups. A close correlation between P. gingivalis and the percentage of sites with PD ≥4 mm was indicated by nonlinear canonical correlation analysis. Current smokers exhibited a more advanced disease condition and a significantly higher P. gingivalis detection rate than non-smokers. In conclusion, periodontal condition worsens with age, and P. gingivalis appears to be the red complex bacterium most closely associated with periodontitis.
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Affiliation(s)
- Otofumi Chigasaki
- Tsukuba Healthcare Dental Clinic.,Department of Periodontology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University
| | - Yasuo Takeuchi
- Department of Periodontology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University
| | - Akira Aoki
- Department of Periodontology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University
| | - Yoshiyuki Sasaki
- Research and Industry-University Alliance Organization, Tokyo Medical and Dental University
| | - Koji Mizutani
- Department of Periodontology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University
| | - Norio Aoyama
- Division of Periodontology, Department of Oral Interdisciplinary Medicine, Graduate School of Dentistry, Kanagawa Dental University
| | - Yuichi Ikeda
- Department of Periodontology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University
| | - Misa Gokyu
- Tsukuba Healthcare Dental Clinic.,Department of Periodontology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University
| | - Makoto Umeda
- Department of Periodontology, Osaka Dental University
| | - Isao Ishikawa
- Institute of Advanced Biomedical Engineering and Science, Tokyo Women's Medical University
| | - Yuichi Izumi
- Department of Periodontology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University
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64
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Jersie-Christensen RR, Lanigan LT, Lyon D, Mackie M, Belstrøm D, Kelstrup CD, Fotakis AK, Willerslev E, Lynnerup N, Jensen LJ, Cappellini E, Olsen JV. Quantitative metaproteomics of medieval dental calculus reveals individual oral health status. Nat Commun 2018; 9:4744. [PMID: 30459334 PMCID: PMC6246597 DOI: 10.1038/s41467-018-07148-3] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2018] [Accepted: 10/09/2018] [Indexed: 12/16/2022] Open
Abstract
The composition of ancient oral microbiomes has recently become accessible owing to advanced biomolecular methods such as metagenomics and metaproteomics, but the utility of metaproteomics for such analyses is less explored. Here, we use quantitative metaproteomics to characterize the dental calculus associated with the remains of 21 humans retrieved during the archeological excavation of the medieval (ca. 1100-1450 CE) cemetery of Tjærby, Denmark. We identify 3671 protein groups, covering 220 bacterial species and 81 genera across all medieval samples. The metaproteome profiles of bacterial and human proteins suggest two distinct groups of archeological remains corresponding to health-predisposed and oral disease-susceptible individuals, which is supported by comparison to the calculus metaproteomes of healthy living individuals. Notably, the groupings identified by metaproteomics are not apparent from the bioarchaeological analysis, illustrating that quantitative metaproteomics has the potential to provide additional levels of molecular information about the oral health status of individuals from archeological contexts.
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Affiliation(s)
- Rosa R Jersie-Christensen
- Proteomics Program, Novo Nordisk Foundation Center for Protein Research, Faculty of Health and Medical Sciences, University of Copenhagen, Blegdamsvej 3B, 2200, Copenhagen N, Denmark
| | - Liam T Lanigan
- Natural History Museum of Denmark, University of Copenhagen, Øster Voldgade 5-7, 1350, Copenhagen K, Denmark
| | - David Lyon
- Disease Systems Biology Program, Novo Nordisk Foundation Center for Protein Research, Faculty of Health and Medical Sciences, University of Copenhagen, Blegdamsvej 3B, 2200, Copenhagen N, Denmark
| | - Meaghan Mackie
- Proteomics Program, Novo Nordisk Foundation Center for Protein Research, Faculty of Health and Medical Sciences, University of Copenhagen, Blegdamsvej 3B, 2200, Copenhagen N, Denmark
- Natural History Museum of Denmark, University of Copenhagen, Øster Voldgade 5-7, 1350, Copenhagen K, Denmark
| | - Daniel Belstrøm
- Periodontology and Microbiology, Department of Odontology, Faculty of Health Sciences, University of Copenhagen, Nørre Allé 20, 2200, Copenhagen N, Denmark
| | - Christian D Kelstrup
- Proteomics Program, Novo Nordisk Foundation Center for Protein Research, Faculty of Health and Medical Sciences, University of Copenhagen, Blegdamsvej 3B, 2200, Copenhagen N, Denmark
| | - Anna K Fotakis
- Natural History Museum of Denmark, University of Copenhagen, Øster Voldgade 5-7, 1350, Copenhagen K, Denmark
| | - Eske Willerslev
- Centre for GeoGenetics, Natural History Museum of Denmark, University of Copenhagen, Øster Voldgade 5-7, 1350, Copenhagen K, Denmark
- Department of Zoology, University of Cambridge, Downing St, Cambridge, CB2 3EJ, UK
| | - Niels Lynnerup
- Laboratory of Biological Anthropology, Institute of Forensic Medicine, Faculty of Health Sciences, University of Copenhagen, Frederik V's Vej 11, 2100, Copenhagen Ø, Denmark
| | - Lars J Jensen
- Disease Systems Biology Program, Novo Nordisk Foundation Center for Protein Research, Faculty of Health and Medical Sciences, University of Copenhagen, Blegdamsvej 3B, 2200, Copenhagen N, Denmark
| | - Enrico Cappellini
- Natural History Museum of Denmark, University of Copenhagen, Øster Voldgade 5-7, 1350, Copenhagen K, Denmark.
| | - Jesper V Olsen
- Proteomics Program, Novo Nordisk Foundation Center for Protein Research, Faculty of Health and Medical Sciences, University of Copenhagen, Blegdamsvej 3B, 2200, Copenhagen N, Denmark.
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65
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Kröger A, Hülsmann C, Fickl S, Spinell T, Hüttig F, Kaufmann F, Heimbach A, Hoffmann P, Enkling N, Renvert S, Schwarz F, Demmer RT, Papapanou PN, Jepsen S, Kebschull M. The severity of human peri‐implantitis lesions correlates with the level of submucosal microbial dysbiosis. J Clin Periodontol 2018; 45:1498-1509. [DOI: 10.1111/jcpe.13023] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2018] [Revised: 10/01/2018] [Accepted: 10/15/2018] [Indexed: 12/14/2022]
Affiliation(s)
- Annika Kröger
- Department of Periodontology, Operative and Preventive DentistryUniversity of Bonn Bonn Germany
- Department of Oral SurgerySchool of DentistryUniversity of Birmingham Birmingham UK
| | - Claudia Hülsmann
- Department of Periodontology, Operative and Preventive DentistryUniversity of Bonn Bonn Germany
| | - Stefan Fickl
- Department of PeriodontologyUniversity of Würzburg Würzburg Germany
| | - Thomas Spinell
- Department of Operative Dentistry and PeriodontologyLMU Munich Munich Germany
- Private Practice Bolzano Italy
| | - Fabian Hüttig
- Department of ProsthodonticsUniversity of Tübingen Tübingen Germany
| | | | - André Heimbach
- Department of Human GeneticsUniversity of Bonn Bonn Germany
| | - Per Hoffmann
- Department of Human GeneticsUniversity of Bonn Bonn Germany
- Department of BiomedicineUniversity of Basel Basel Switzerland
| | | | - Stefan Renvert
- Department of Health SciencesKristianstad University Kristianstad Sweden
| | - Frank Schwarz
- Department of Oral Surgery and ImplantologyCarolinumGoethe University Frankfurt Germany
- Department of Oral SurgeryUniversitätsklinikum Düsseldorf Düsseldorf Germany
| | - Ryan T. Demmer
- Division of Epidemiology and Community HealthSchool of Public HealthUniversity of Minnesota Minneapolis Minnesota
| | - Panos N. Papapanou
- Division of PeriodonticsSection of Oral, Diagnostic and Rehabilitation SciencesColumbia University College of Dental Medicine New York New York
| | - Søren Jepsen
- Department of Periodontology, Operative and Preventive DentistryUniversity of Bonn Bonn Germany
| | - Moritz Kebschull
- Department of Periodontology, Operative and Preventive DentistryUniversity of Bonn Bonn Germany
- Division of PeriodonticsSection of Oral, Diagnostic and Rehabilitation SciencesColumbia University College of Dental Medicine New York New York
- The School of DentistryUniversity of Birmingham Birmingham UK
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66
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Pokrowiecki R. The paradigm shift for drug delivery systems for oral and maxillofacial implants. Drug Deliv 2018; 25:1504-1515. [PMID: 29968496 PMCID: PMC6058499 DOI: 10.1080/10717544.2018.1477855] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2018] [Revised: 05/10/2018] [Accepted: 05/14/2018] [Indexed: 12/16/2022] Open
Abstract
Along with the development of nanotechnological strategies for biomaterials associated with the prevention of infections, a myriad of clinically unproven techniques have been described to date. In this work, the aim was to perform a critical analysis of the literature available concerning antibacterial biomaterials for oral implantology and to provide a practical derivation for such a purpose. As anti-adhesive strategies may affect osseointegration, they should no longer be recommended for inclusion in this class of biomaterials, despite promising results in biomedical engineering for other, non-bone load bearing organs. Targeted, antibacterial drug delivery is most likely desirable in the case of intraosseous implants. Interfering factors such as the oral cavity environment, saliva, the bacterial microbiome, as well as, the characteristics of the alveolar mucosa and peri-implant space must be taken into account when calculating the local pharmacokinetics for antibacterial coatings. Effective release is crucial for tailoring antibacterial implant longevity providing minimal inhibitory concentration (MIC) for the desired amount of time, which for oral implants, should be at least the cumulative time for the osseointegration period and functional loading period within the tissues. These parameters may differ between the implant type and its anatomical site. Also, the functional drug concentration in the peri-implant space should be calculated as the amount of the drug released from the implant surface including the concentration of the drug inactivated by biological fluids of the peri-implant space or saliva flow throughout the effective release time.
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Affiliation(s)
- Rafal Pokrowiecki
- Department of Otolaryngology and Ophtalmology, Prof. Stanislaw Popowski Voivoid Children Hospital Department of Head and Neck Surgery – Maxillofacial Surgery, Zołnierska, Olsztyn, Poland
- Private Dental Practice, Poland
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67
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Daubert D, Pozhitkov A, McLean J, Kotsakis G. Titanium as a modifier of the peri-implant microbiome structure. Clin Implant Dent Relat Res 2018; 20:945-953. [PMID: 30255621 DOI: 10.1111/cid.12676] [Citation(s) in RCA: 45] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2018] [Revised: 08/25/2018] [Accepted: 08/28/2018] [Indexed: 12/25/2022]
Abstract
BACKGROUND Recent data support the implication of accelerated titanium dissolution products in peri-implantitis. It is unknown whether these dissolution products have an effect on the peri-implant microbiome, the target of existing peri-implantitis therapies. PURPOSE This study assessed the relationship between the peri-implant microbiome, dissolved titanium levels, and peri-implantitis. MATERIALS AND METHODS Clinical, microbiome, and titanium data were collected from a periodontal population having implants in function for 10 years. Clinical examinations were performed, and submucosal plaque samples were collected from the deepest site per implant. An aliquot of the sample was used for 16S rRNA gene sequencing, with the remainder analyzed for titanium quantity using mass spectrometry. Sequences were clustered into taxonomic units at 97% minimum sequence similarity using the QIIME pipeline approach. RESULTS Fifteen implants were assessed. According to established case definitions, six had a diagnosis of peri-implantitis; nine were healthy. The genera Streptococcus, Prevotella and Haemophilus characterized peri-implant health. Peri-implantitis was associated with a marked increase in Veillonella. Quantities of dissolved titanium were identified in 40% of sites. Titanium presence was associated with peri-implant disease status (P = .02) and correlated to the first principal component of the microbiome (rho = 0.552) and its alpha-diversity (rho = -0.496). Canonical correlation analyses found that titanium levels, but not health or disease status of the implant, were significantly associated with the microbiota composition (P = .045). CONCLUSIONS These findings suggest an association between titanium dissolution products and peri-implantitis and support a role for these products in modifying the peri-implant microbiome structure and diversity.
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Affiliation(s)
- Diane Daubert
- Department of Periodontics, Clinical and Periodontal Research Laboratory, University of Washington, Seattle, WA (Washington), USA
| | - Alexander Pozhitkov
- Department of Restorative Dentistry, University of Washington, Seattle, WA (Washington), USA
| | - Jeffrey McLean
- Department of Periodontics and Oral Health Sciences, University of Washington, Seattle, WA (Washington), USA.,Department of Microbiology, University of Washington, Seattle, WA (Washington), USA
| | - Georgios Kotsakis
- Department of Periodontics, Clinical and Periodontal Research Laboratory, University of Washington, Seattle, WA (Washington), USA
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68
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Ramos UD, Suaid F, Wikesjö UM, Susin C, Vital PC, de Souza SLS, Messora MR, Palioto DB, Novaes AB. Microbiologic effect of two topical anti-infective treatments on ligature-induced peri-implantitis: A pilot study in dogs. J Periodontol 2018; 89:995-1002. [DOI: 10.1002/jper.17-0630] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2017] [Revised: 01/31/2018] [Accepted: 02/12/2018] [Indexed: 11/08/2022]
Affiliation(s)
- Umberto Demoner Ramos
- Department of Buccomaxillofacial Surgery and Periodontology University of São Paulo Ribeirao Preto School of Dentistry; Ribeirão Preto; São Paulo Brazil
| | - Flavia Suaid
- Department of Buccomaxillofacial Surgery and Periodontology University of São Paulo Ribeirao Preto School of Dentistry; Ribeirão Preto; São Paulo Brazil
| | - Ulf M.E. Wikesjö
- Laboratory for Applied Periodontal & Craniofacial Regeneration; Augusta University; The Dental College of Georgia; Augusta GA
| | - Cristiano Susin
- Laboratory for Applied Periodontal & Craniofacial Regeneration; Augusta University; The Dental College of Georgia; Augusta GA
| | - Patrícia Conde Vital
- Department of Buccomaxillofacial Surgery and Periodontology University of São Paulo Ribeirao Preto School of Dentistry; Ribeirão Preto; São Paulo Brazil
| | - Sérgio Luis Scombatti de Souza
- Department of Buccomaxillofacial Surgery and Periodontology University of São Paulo Ribeirao Preto School of Dentistry; Ribeirão Preto; São Paulo Brazil
| | - Michel Reis Messora
- Department of Buccomaxillofacial Surgery and Periodontology University of São Paulo Ribeirao Preto School of Dentistry; Ribeirão Preto; São Paulo Brazil
| | - Daniela Bazan Palioto
- Department of Buccomaxillofacial Surgery and Periodontology University of São Paulo Ribeirao Preto School of Dentistry; Ribeirão Preto; São Paulo Brazil
| | - Arthur Belém Novaes
- Department of Buccomaxillofacial Surgery and Periodontology University of São Paulo Ribeirao Preto School of Dentistry; Ribeirão Preto; São Paulo Brazil
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69
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Antibacterial effect of diode lasers in the treatment of peri-implantitis and their effects on implant surfaces: a literature review. ACTA ACUST UNITED AC 2018. [DOI: 10.1007/s41547-018-0039-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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70
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Belkacemi S, Mazel A, Tardivo D, Tavitian P, Stephan G, Bianca G, Terrer E, Drancourt M, Aboudharam G. Peri-implantitis-associated methanogens: a preliminary report. Sci Rep 2018; 8:9447. [PMID: 29930395 PMCID: PMC6013440 DOI: 10.1038/s41598-018-27862-8] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2017] [Accepted: 06/07/2018] [Indexed: 01/30/2023] Open
Abstract
Methanogens have already been described in periodontitis but not in peri-implantitis. Thirty peri-implantitis samples and 28 control samples were collected in 28 consenting peri-implantitis patients. PCR-sequencing of the 16S rRNA gene was used as a broad-spectrum screening method and results were further confirmed by real-time quantitative PCR targeting the mcrA genes. Results showed a methanogen community dominated by Methanobrevibacter oralis in 31/58 (51%) samples including 16/28 (57%) control samples and 15/30 (50%) peri-implantitis samples. Methanobrevibacter massiliense was detected in 5/58 (8.6%) samples including 3/28 (1%) control samples and 2/30 (6.7%) peri-implantitis samples. The prevalence of M. oralis or M. massiliense did not significantly differ in peri-implantitis and control samples (exact Fisher test, P = 0.61 and P = 0.67, respectively). Further ponderation of the methanogen load by the real-time quantitative PCR for actin human gene again indicated non-significant difference (Wilcoxon-Mann-Whitney test, P = 0.48 and P = 0.40, respectively). These data show that the prevalence of methanogens does not differ in peri-implantitis lesions and healthy sites, when individuals are their own control. These data do not allow assigning a specific pathogenic role to methanogens in peri-implantitis; methanogens rather are part of the commensal and normal flora of the oral cavity.
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Affiliation(s)
- Souad Belkacemi
- Aix-Marseille Univ, IRD, MEPHI, IHU Méditerranée-Infection, Marseille, France
| | - Anthony Mazel
- UFR Odontologie, Aix-Marseille Université, Marseille, France
| | | | | | - Grégory Stephan
- UFR Odontologie, Aix-Marseille Université, Marseille, France
| | | | - Elodie Terrer
- Aix-Marseille Univ, IRD, MEPHI, IHU Méditerranée-Infection, Marseille, France
- UFR Odontologie, Aix-Marseille Université, Marseille, France
| | - Michel Drancourt
- Aix-Marseille Univ, IRD, MEPHI, IHU Méditerranée-Infection, Marseille, France.
| | - Gérard Aboudharam
- Aix-Marseille Univ, IRD, MEPHI, IHU Méditerranée-Infection, Marseille, France
- UFR Odontologie, Aix-Marseille Université, Marseille, France
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71
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Research on oral microbiota of monozygotic twins with discordant caries experience - in vitro and in vivo study. Sci Rep 2018; 8:7267. [PMID: 29740156 PMCID: PMC5940813 DOI: 10.1038/s41598-018-25636-w] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2017] [Accepted: 04/18/2018] [Indexed: 02/05/2023] Open
Abstract
Oral microbiome is potentially correlated with many diseases, such as dental caries, periodontitis, oral cancer and some systemic diseases. Twin model, as an effective method for studying human microbiota, is widely used in research of relationship between oral microbiota and dental caries. However, there were few researches focusing on caries discordant twins. In this study, in vitro assays were conducted combined with 16S rRNA sequencing analysis on oral microbiota sampled from twins who presented discordant caries experience and mice model was developed as well. Results showed that oral microbiota from caries-active twin possessed higher metabolic activity and produced more lactic production. 16S rRNA sequencing analysis showed that more than 80% of family taxa could be transferred into gnotobiotic-mice. Key caries-associated genera were significantly different between twins and the same difference in genus level could be found in mice as well (p < 0.05). This study suggested that oral microbiota of twins could be distinguished from each other despite the similarities in genetic make-up, living environment, and lifestyle. The difference in microbiota was applied to develop a mice model which may facilitate the investigation of core microbiota of dental caries.
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72
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Antibacterial effect of Er,Cr:YSGG laser in the treatment of peri-implantitis and their effect on implant surfaces: a literature review. ACTA ACUST UNITED AC 2018. [DOI: 10.1007/s41547-018-0032-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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73
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Al-Ahmad A, Muzafferiy F, Anderson AC, Wölber JP, Ratka-Krüger P, Fretwurst T, Nelson K, Vach K, Hellwig E. Shift of microbial composition of peri-implantitis-associated oral biofilm as revealed by 16S rRNA gene cloning. J Med Microbiol 2018; 67:332-340. [DOI: 10.1099/jmm.0.000682] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Affiliation(s)
- Ali Al-Ahmad
- Department of Operative Dentistry and Periodontology, Faculty of Medicine, Medical Center – University of Freiburg, Germany
| | - Fariba Muzafferiy
- Department of Operative Dentistry and Periodontology, Faculty of Medicine, Medical Center – University of Freiburg, Germany
| | - Annette C. Anderson
- Department of Operative Dentistry and Periodontology, Faculty of Medicine, Medical Center – University of Freiburg, Germany
| | - Johan P. Wölber
- Department of Operative Dentistry and Periodontology, Faculty of Medicine, Medical Center – University of Freiburg, Germany
| | - Petra Ratka-Krüger
- Department of Operative Dentistry and Periodontology, Faculty of Medicine, Medical Center – University of Freiburg, Germany
| | - Tobias Fretwurst
- Department of Oral and Craniomaxillofacial Surgery, Faculty of Medicine, Medical Center – University of Freiburg, Germany
| | - Katja Nelson
- Department of Oral and Craniomaxillofacial Surgery, Faculty of Medicine, Medical Center – University of Freiburg, Germany
| | - Kirstin Vach
- Department of Medical Biometry and Statistics, Faculty of Medicine, University of Freiburg, Germany
| | - Elmar Hellwig
- Department of Operative Dentistry and Periodontology, Faculty of Medicine, Medical Center – University of Freiburg, Germany
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Xu X, Wang L, Luo Z, Ni Y, Sun H, Gao X, Li Y, Zhang S, Li Y, Wei S. Facile and Versatile Strategy for Construction of Anti-Inflammatory and Antibacterial Surfaces with Polydopamine-Mediated Liposomes Releasing Dexamethasone and Minocycline for Potential Implant Applications. ACS APPLIED MATERIALS & INTERFACES 2017; 9:43300-43314. [PMID: 29140074 DOI: 10.1021/acsami.7b06295] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Reducing early nonbacterial inflammation induced by implanted materials and infection resulting from bacterial contamination around the implant-abutment interface could greatly decrease implant failure rates, which would be of clinical significance. In this work, we presented a facile and versatile strategy for the construction of anti-inflammatory and antibacterial surfaces. Briefly, the surfaces of polystyrene culture plates were first coated with polydopamine and then decorated with dexamethasone plus minocycline-loaded liposomes (Dex/Mino liposomes), which was validated by contact angle goniometry, quartz crystal microbalance, and fluorescence microscopy. Dex/Mino liposomes were dispersed on functional surfaces and the drug release kinetics exhibited the sustained release of dexamethasone and minocycline. Our results demonstrated that the Dex/Mino liposome-modified surfaces had good biocompatibility. Additionally, liposomal dexamethasone reduced proinflammatory mediator expression (particularly IL-6 and TNF-α) in lipopolysaccharide-stimulated human gingival fibroblasts and human mesenchymal stem cells. Moreover, liposomal minocycline prevented the adhesion and proliferation of Porphyromonas gingivalis (Gram-negative bacteria) and Streptococcus mutans (Gram-positive bacteria). These findings demonstrate that an anti-inflammatory and antibacterial surface was developed, using dopamine as a medium and combining a liposomal delivery device, which has potential for use to reduce implant failure rates. Accordingly, the surface modification strategy presented could be useful in biofunctionalization of implant materials.
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Affiliation(s)
- Xiao Xu
- Central Laboratory/Department of Oral and Maxillofacial Surgery, Peking University School and Hospital of Stomatology, National Engineering Laboratory for Digital and Material Technology of Stomatology, Beijing Key Laboratory of Digital Stomatology , Beijing 100081, P. R. China
| | - Lixin Wang
- Department of Stomatology, Beijing Shijitan Hospital, Capital Medical University , Beijing 100038, P. R. China
| | - Zuyuan Luo
- Laboratory of Biomaterials and Regenerative Medicine, Academy for Advanced Interdisciplinary Studies, Peking University , Beijing 100871, P. R. China
| | - Yaofeng Ni
- Department of Stomatology, Beijing Shijitan Hospital, Capital Medical University , Beijing 100038, P. R. China
| | - Haitao Sun
- Department of Stomatology, Beijing Shijitan Hospital, Capital Medical University , Beijing 100038, P. R. China
| | - Xiang Gao
- Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences, Chongqing Medical University , Chongqing 401147, P. R. China
| | - Yongliang Li
- Central Laboratory/Department of Oral and Maxillofacial Surgery, Peking University School and Hospital of Stomatology, National Engineering Laboratory for Digital and Material Technology of Stomatology, Beijing Key Laboratory of Digital Stomatology , Beijing 100081, P. R. China
| | - Siqi Zhang
- Laboratory of Biomaterials and Regenerative Medicine, Academy for Advanced Interdisciplinary Studies, Peking University , Beijing 100871, P. R. China
| | - Yan Li
- Laboratory of Biomaterials and Regenerative Medicine, Academy for Advanced Interdisciplinary Studies, Peking University , Beijing 100871, P. R. China
| | - Shicheng Wei
- Central Laboratory/Department of Oral and Maxillofacial Surgery, Peking University School and Hospital of Stomatology, National Engineering Laboratory for Digital and Material Technology of Stomatology, Beijing Key Laboratory of Digital Stomatology , Beijing 100081, P. R. China
- Laboratory of Biomaterials and Regenerative Medicine, Academy for Advanced Interdisciplinary Studies, Peking University , Beijing 100871, P. R. China
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75
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Kato A, Imai K, Sato H, Ogata Y. Prevalence of Epstein-Barr virus DNA and Porphyromonas gingivalis in Japanese peri-implantitis patients. BMC Oral Health 2017; 17:148. [PMID: 29233156 PMCID: PMC5727789 DOI: 10.1186/s12903-017-0438-6] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2017] [Accepted: 11/24/2017] [Indexed: 11/22/2022] Open
Abstract
Background Peri-implantitis (PI) is an inflammatory reaction associated with functional deterioration of supporting bones around the dental implant. Recent studies suggested Epstein–Barr virus (EBV) is involved in the pathogenesis of periodontitis. We investigated the association between EBV and Porphyromonas gingivalis in Japanese PI patients. Methods Fifteen periodontally healthy individuals, 15 healthy implant patients and 15 PI patients were recruited. Forty five subgingival plaque samples were collected from the deepest probing pocket depth (PPD) site from each patient. Real-time PCR was used to detect EBV DNA and P. gingivalis. Results EBV and P. gingivalis were detected in 7 and 3 PPD sites of the healthy controls, in 9 and 4 PPD sites of the healthy implants, and in 13 and 14 PPD sites of the PI patients. P. gingivalis and coexistence of EBV and P. gingivalis were detected significantly higher in the PI patients than healthy controls and healthy implant patients. EBV was detected significantly higher in the PI patients than healthy controls. Conclusions Higher levels of EBV and P. gingivalis were detected in PPD sites of PI patients. These results suggest that coexistence of EBV and P. gingivalis may serve pathogenic factors cause for PI in Japanese dental patients.
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Affiliation(s)
- Ayako Kato
- Yorimasa Ogata, Department of Periodontology and Research Institute of Oral Science, Nihon University School of Dentistry at Matsudo, 2-870-1 Skakaecho-nishi, Matsudo, Chiba, 271-8587, Japan
| | - Kenichi Imai
- Department of Microbiology, Division of Immunology and Pathobiology, Dental Research Center, Nihon University School of Dentistry, Tokyo, 102-8310, Japan
| | - Hiroki Sato
- Yorimasa Ogata, Department of Periodontology and Research Institute of Oral Science, Nihon University School of Dentistry at Matsudo, 2-870-1 Skakaecho-nishi, Matsudo, Chiba, 271-8587, Japan
| | - Yorimasa Ogata
- Yorimasa Ogata, Department of Periodontology and Research Institute of Oral Science, Nihon University School of Dentistry at Matsudo, 2-870-1 Skakaecho-nishi, Matsudo, Chiba, 271-8587, Japan.
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Pokrowiecki R, Mielczarek A, Zaręba T, Tyski S. Oral microbiome and peri-implant diseases: where are we now? Ther Clin Risk Manag 2017; 13:1529-1542. [PMID: 29238198 PMCID: PMC5716316 DOI: 10.2147/tcrm.s139795] [Citation(s) in RCA: 50] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Peri-implant infective diseases (PIIDs) in oral implantology are commonly known as peri-implant mucositis (PIM) and periimplantitis (PI). While PIM is restricted to the peri-implant mucosa and is reversible, PI also affects implant-supporting bone and, therefore, is very difficult to eradicate. PIIDs in clinical outcome may resemble gingivitis and periodontitis, as they share similar risk factors. However, recent study in the field of proteomics and other molecular studies indicate that PIIDs exhibit significant differences when compared to periodontal diseases. This review aims to elucidate the current knowledge of PIIDs, their etiopathology and diversified microbiology as well as the role of molecular studies, which may be a key to personalized diagnostic and treatment protocols of peri-implant infections in the near future.
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Affiliation(s)
- Rafał Pokrowiecki
- Department of Head and Neck Surgery-Maxillofacial Surgery, Otolaryngology and Ophthalmology, Prof Stanislaw Popowski Voivoid Children Hospital, Olsztyn
| | | | - Tomasz Zaręba
- Department of Antibiotics and Microbiology, National Medicines Institute
| | - Stefan Tyski
- Department of Antibiotics and Microbiology, National Medicines Institute
- Department of Pharmaceutical Microbiology, Medical University of Warsaw, Warsaw, Poland
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Sanz-Martin I, Doolittle-Hall J, Teles RP, Patel M, Belibasakis GN, Hämmerle CHF, Jung RE, Teles FRF. Exploring the microbiome of healthy and diseased peri-implant sites using Illumina sequencing. J Clin Periodontol 2017; 44:1274-1284. [PMID: 28766745 DOI: 10.1111/jcpe.12788] [Citation(s) in RCA: 94] [Impact Index Per Article: 13.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/27/2017] [Indexed: 01/02/2023]
Abstract
AIM To compare the microbiome of healthy (H) and diseased (P) peri-implant sites and determine the core peri-implant microbiome. MATERIALS AND METHODS Submucosal biofilms from 32 H and 35 P sites were analysed using 16S rRNA sequencing (MiSeq, Illumina), QIIME and HOMINGS. Differences between groups were determined using principal coordinate analysis (PCoA), t tests and Wilcoxon rank sum test and FDR-adjusted. The peri-implant core microbiome was determined. RESULTS PCoA showed partitioning between H and P at all taxonomic levels. Bacteroidetes, Spirochetes and Synergistetes were higher in P, while Actinobacteria prevailed in H (p < .05). Porphyromonas and Treponema were more abundant in P while Rothia and Neisseria were higher in H (p < .05). The core peri-implant microbiome contained Fusobacterium, Parvimonas and Campylobacter sp. T. denticola, and P. gingivalis levels were higher in P, as well as F. alocis, F. fastidiosum and T. maltophilum (p < .05). CONCLUSION The peri-implantitis microbiome is commensal-depleted and pathogen-enriched, harbouring traditional and new pathogens. The core peri-implant microbiome harbours taxa from genera often associated with periodontal inflammation.
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Affiliation(s)
- Ignacio Sanz-Martin
- Section of Periodontology, Faculty of Odontology, University Complutense of Madrid, Madrid, Spain
| | - Janet Doolittle-Hall
- Department of Dental Ecology, University of North Carolina at Chapel Hill School of Dentistry, Chapel Hill, NC, USA
| | - Ricardo P Teles
- Department of Periodontology, University of North Carolina at Chapel Hill School of Dentistry, Chapel Hill, NC, USA
| | - Michele Patel
- Department of Applied Oral Sciences, The Forsyth Institute, Cambridge, MA, USA
| | | | - Christoph H F Hämmerle
- Clinic of Fixed and Removable Prosthodontics and Dental Material Science, Center of Dental Medicine, University of Zürich, Zürich, Switzerland
| | - Ronald E Jung
- Clinic of Fixed and Removable Prosthodontics and Dental Material Science, Center of Dental Medicine, University of Zürich, Zürich, Switzerland
| | - Flavia R F Teles
- Department of Periodontology, University of North Carolina at Chapel Hill School of Dentistry, Chapel Hill, NC, USA
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78
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Microbiome of peri -implantitis affected and healthy dental sites in patients with a history of chronic periodontitis. Arch Oral Biol 2017; 83:145-152. [DOI: 10.1016/j.archoralbio.2017.07.007] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2017] [Revised: 07/05/2017] [Accepted: 07/09/2017] [Indexed: 12/26/2022]
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79
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Lafaurie GI, Sabogal MA, Castillo DM, Rincón MV, Gómez LA, Lesmes YA, Chambrone L. Microbiome and Microbial Biofilm Profiles of Peri-Implantitis: A Systematic Review. J Periodontol 2017; 88:1066-1089. [PMID: 28625077 DOI: 10.1902/jop.2017.170123] [Citation(s) in RCA: 167] [Impact Index Per Article: 23.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
BACKGROUND This systematic review assesses microbiologic profiles of peri-implantitis, periodontitis, and healthy implants based on studies that evaluated microbial biofilms and entire microbiomes to establish their similarities and differences. METHODS The Medical Literature Analysis and Retrieval System Online via PubMed, Excerpta Medica Database, and Cochrane Central Register of Controlled Trials, were searched without language restrictions through July 30, 2016. Observational studies that evaluated microbial profiles or entire microbiomes of peri-implantitis compared with healthy implants or periodontitis were considered eligible for inclusion. A descriptive summary was created to determine quantity of data and interstudy variations. RESULTS Of 126 potentially eligible articles, 26 were included in this study. Twenty-one of these articles evaluated the microbiologic profile of peri-implantitis versus healthy implants or periodontitis using conventional microbiologic techniques. Five articles evaluated the entire microbiome using genomic sequencing. Teeth with periodontitis, healthy implants, or implants with peri-implantitis were colonized by periodontal microorganisms. Porphyromonas gingivalis and especially Prevotella intermedius/nigrescens were often identified at peri-implantitis sites. Peri-implantitis sites were also colonized by uncultivable asaccharolytic anaerobic Gram-positive rods and anaerobic Gram-negative rods, which were not frequently identified in teeth with periodontitis or healthy implants. Opportunistic microorganisms were not found very frequently in peri-implantitis sites. CONCLUSIONS Peri-implantitis represents a heterogeneous mixed infection that includes periodontopathic microorganisms, uncultivable asaccharolytic anaerobic Gram-positive rods and other uncultivable Gram-negative rods, and, rarely, opportunistic microorganisms such as enteric rods and Staphylococcus aureus. Sequencing methods that evaluate the entire microbiome improve identification of microorganisms associated with peri-implantitis.
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Affiliation(s)
- Gloria Inés Lafaurie
- Unit of Basic Oral Investigation, School of Dentistry, El Bosque University, Bogotá, Colombia
| | - María Alejandra Sabogal
- Unit of Basic Oral Investigation, School of Dentistry, El Bosque University, Bogotá, Colombia
| | - Diana Marcela Castillo
- Unit of Basic Oral Investigation, School of Dentistry, El Bosque University, Bogotá, Colombia
| | | | - Luz Amparo Gómez
- Division of Periodontics, School of Dentistry, El Bosque University
| | | | - Leandro Chambrone
- Unit of Basic Oral Investigation, School of Dentistry, El Bosque University, Bogotá, Colombia
- MSc Dentistry Program, School of Dentistry, Ibirapuera University, São Paulo, Brazil
- Department of Periodontics, College of Dentistry, The University of Iowa, Iowa City, IA
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80
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Yu X, Hu Y, Freire M, Yu P, Kawai T, Han X. Role of toll-like receptor 2 in inflammation and alveolar bone loss in experimental peri-implantitis versus periodontitis. J Periodontal Res 2017; 53:98-106. [PMID: 28872184 DOI: 10.1111/jre.12492] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/07/2017] [Indexed: 02/05/2023]
Abstract
BACKGROUND AND OBJECTIVE Peri-implantitis and periodontitis are different entities in immune characteristics even though they share similar features in clinical and radiologic signs. Toll-like receptor 2 (TLR-2), one of the key pathogen-recognition receptors in the innate immune system, plays an important role in the progression of periodontitis. However, the role of TLR-2 in peri-implantitis remains unclear. The objective of this study was to investigate the role of TLR-2 in inflammation and alveolar bone loss in a murine model of ligature-induced peri-implantitis and to compare it with ligature-induced periodontitis. MATERIAL AND METHODS Smooth-surface titanium implants were placed in the alveolar bone of the left maxillary molars of wild-type (WT) and Tlr2 knockout (Tlr2-KO) mice 6 weeks after tooth extraction. Silk ligatures were applied to the left implant fixtures and the right maxillary second molars to induce peri-implantitis and periodontitis 4 weeks after implant placement. Two weeks after ligation, bone loss around the implants and maxillary second molars was analysed by micro-computed tomography (micro-CT), and inflammation around the implants and maxillary second molars was assessed at the same time point using histology and TRAP staining, respectively. Expression of mRNA for proinflammatory cytokines (interleukin-1β [Il1β], tumor necrosis factor-α [Tnfα]), an anti-inflammatory cytokine (interleukin-10 [Il10]) and osteoclastogenesis-related cytokines (Rankl, osteoprotegerin [Opg]) were evaluated, in gingival tissue, using real-time quantitative PCR (RT-qPCR). RESULTS The success rate of implant osseointegration was significantly higher in Tlr2-KO mice (85.71%) compared with WT mice (53.66%) (P = .0125). Micro-CT revealed significantly decreased bone loss in Tlr2-KO mice compared with WT mice (P = .0094) in peri-implantitis. The levels of mRNA for Il1β (P = .0055), Tnfα (P = .01) and Il10 (P = .0019) in gingiva were significantly elevated in the peri-implantitis tissues of WT mice, but not in Tlr2-KO mice, compared with controls. However, the gingival mRNA ratios of Rankl/Opg in peri-implant tissues were significantly upregulated in both WT (P = .0488) and Tlr2-KO (P = .0314) mice. Ligature-induced periodontitis exhibited similar patterns of bone loss and inflammatory cytokine profile in both groups of mice, except that the level of Il10 was elevated (P = .0114) whereas the Rankl/Opg ratio was not elevated (P = .9755) in Tlr2-KO mice compared with control mice. Histological findings showed increased numbers of TRAP-positive cells and infiltrated inflammatory cells in ligature-induced peri-implantitis in both WT (P < .01) and Tlr2-KO mice (P < .05), and the numbers of both types of cell were significantly higher in WT mice than in Tlr2-KO mice (P < .01). CONCLUSION This study suggests that TLR-2 mediates bone loss in both peri-implantitis and periodontitis. However, different molecular features may exist in the pathogenesis of the two diseases.
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Affiliation(s)
- X Yu
- Department of Periodontology, The Affiliated Hospital of Qingdao University, College of Stomatology, Qingdao University, Qingdao, Shandong, China.,Department of Immunology and Infectious Diseases, The Forsyth Institute, Cambridge, MA, USA
| | - Y Hu
- Department of Immunology and Infectious Diseases, The Forsyth Institute, Cambridge, MA, USA
| | - M Freire
- Department of Applied Oral Sciences, The Forsyth Institute, Cambridge, MA, USA
| | - P Yu
- State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan, China
| | - T Kawai
- Department of Immunology and Infectious Diseases, The Forsyth Institute, Cambridge, MA, USA
| | - X Han
- Department of Immunology and Infectious Diseases, The Forsyth Institute, Cambridge, MA, USA
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81
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Friedman E, Alizadeh N, Loewy Z. Oral Health: The Need for Both Conventional Microbial and Molecular Characterization. High Throughput 2017; 6:ht6030011. [PMID: 29485609 PMCID: PMC5734190 DOI: 10.3390/ht6030011] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2017] [Revised: 07/26/2017] [Accepted: 07/27/2017] [Indexed: 12/22/2022] Open
Abstract
This study aims to consider the microbial distribution in oral disease, as well as gene analysis and expression, in elucidating: 1, the fundamental underpinnings of oral disease, and 2, the potential relationship between oral diseases and systemic health. A key focus is identifying the microbiota associated with oral disease manifestations characterized by both conventional microbiological and molecular methods. Variations in the observed microbial populations characterized by conventional and molecular approaches have been identified for caries, periodontitis, peri-implantitis, and stomatitis. The discovery of therapeutic approaches for oral disease will require comprehensive microbial and genomic analysis. This study evaluated the current state of the relevant microbial and genomic information for several prevalent oral diseases.
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Affiliation(s)
- Elisheva Friedman
- Department of Pharmaceutical and Biomedical Sciences, Touro College of Pharmacy, New York, NY 10027, USA.
| | - Negin Alizadeh
- Department of Pharmaceutical and Biomedical Sciences, Touro College of Pharmacy, New York, NY 10027, USA.
| | - Zvi Loewy
- Department of Pharmaceutical and Biomedical Sciences, Touro College of Pharmacy, New York, NY 10027, USA.
- Department of Microbiology and Immunology, New York Medical College, Valhalla, NY 10595, USA.
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82
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Oral Health: The Need for Both Conventional Microbial and Molecular Characterization. High Throughput 2017. [DOI: 10.3390/ht6010002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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83
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Oral Health: The Need for Both Conventional Microbial and Molecular Characterization. High Throughput 2017. [DOI: 10.3390/ht6030002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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84
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You M, Chan Y, Lacap-Bugler DC, Huo YB, Gao W, Leung WK, Watt RM. Oral treponeme major surface protein: Sequence diversity and distributions within periodontal niches. Mol Oral Microbiol 2017; 32:455-474. [PMID: 28453906 DOI: 10.1111/omi.12185] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/24/2017] [Indexed: 12/19/2022]
Abstract
Treponema denticola and other species (phylotypes) of oral spirochetes are widely considered to play important etiological roles in periodontitis and other oral infections. The major surface protein (Msp) of T. denticola is directly implicated in several pathological mechanisms. Here, we have analyzed msp sequence diversity across 68 strains of oral phylogroup 1 and 2 treponemes; including reference strains of T. denticola, Treponema putidum, Treponema medium, 'Treponema vincentii', and 'Treponema sinensis'. All encoded Msp proteins contained highly conserved, taxon-specific signal peptides, and shared a predicted 'three-domain' structure. A clone-based strategy employing 'msp-specific' polymerase chain reaction primers was used to analyze msp gene sequence diversity present in subgingival plaque samples collected from a group of individuals with chronic periodontitis (n=10), vs periodontitis-free controls (n=10). We obtained 626 clinical msp gene sequences, which were assigned to 21 distinct 'clinical msp genotypes' (95% sequence identity cut-off). The most frequently detected clinical msp genotype corresponded to T. denticola ATCC 35405T , but this was not correlated to disease status. UniFrac and libshuff analysis revealed that individuals with periodontitis and periodontitis-free controls harbored significantly different communities of treponeme clinical msp genotypes (P<.001). Patients with periodontitis had higher levels of clinical msp genotype diversity than periodontitis-free controls (Mann-Whitney U-test, P<.05). The relative proportions of 'T. vincentii' clinical msp genotypes were significantly higher in the control group than in the periodontitis group (P=.018). In conclusion, our data clearly show that both healthy and diseased individuals commonly harbor a wide diversity of Treponema clinical msp genotypes within their subgingival niches.
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Affiliation(s)
- M You
- Department of Oral Radiology and State Key Laboratory of Oral Diseases, West China College of Stomatology, Sichuan University, Chengdu, China
| | - Y Chan
- Faculty of Dentistry, The University of Hong Kong, Prince Philip Dental Hospital, Sai Ying Pun, Hong Kong SAR, China
| | - D C Lacap-Bugler
- School of Science, Faculty of Health and Environmental Sciences, Auckland University of Technology, Auckland, New Zealand
| | - Y-B Huo
- Zhujiang New Town Dental Clinic, Guanghua School and Hospital of Stomatology, Guangdong Key Laboratory of Stomatology, Sun Yat-sen University, Guangzhou, Guangdong, China
| | - W Gao
- Faculty of Dentistry, The University of Hong Kong, Prince Philip Dental Hospital, Sai Ying Pun, Hong Kong SAR, China
| | - W K Leung
- Faculty of Dentistry, The University of Hong Kong, Prince Philip Dental Hospital, Sai Ying Pun, Hong Kong SAR, China
| | - R M Watt
- Faculty of Dentistry, The University of Hong Kong, Prince Philip Dental Hospital, Sai Ying Pun, Hong Kong SAR, China
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85
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Marginal bone loss around non-submerged implants is associated with salivary microbiome during bone healing. Int J Oral Sci 2017. [PMID: 28621324 PMCID: PMC5518974 DOI: 10.1038/ijos.2017.18] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
Marginal bone loss during bone healing exists around non-submerged dental implants. The aim of this study was to identify the relationship between different degrees of marginal bone loss during bone healing and the salivary microbiome. One hundred patients were recruited, and marginal bone loss around their implants was measured using cone beam computed tomography during a 3-month healing period. The patients were divided into three groups according to the severity of marginal bone loss. Saliva samples were collected from all subjected and were analysed using 16S MiSeq sequencing. Although the overall structure of the microbial community was not dramatically altered, the relative abundance of several taxonomic groups noticeably changed. The abundance of species in the phyla Spirochaeta and Synergistetes increased significantly as the bone loss became more severe. Species within the genus Treponema also exhibited increased abundance, whereas Veillonella, Haemophilus and Leptotrichia exhibited reduced abundances, in groups with more bone loss. Porphyromonasgingivalis, Treponemadenticola and Streptococcus intermedius were significantly more abundant in the moderate group and/or severe group. The severity of marginal bone loss around the non-submerged implant was associated with dissimilar taxonomic compositions. An increased severity of marginal bone loss was related to increased proportions of periodontal pathogenic species. These data suggest a potential role of microbes in the progression of marginal bone loss during bone healing.
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86
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Kommerein N, Stumpp SN, Müsken M, Ehlert N, Winkel A, Häussler S, Behrens P, Buettner FFR, Stiesch M. An oral multispecies biofilm model for high content screening applications. PLoS One 2017; 12:e0173973. [PMID: 28296966 PMCID: PMC5352027 DOI: 10.1371/journal.pone.0173973] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2016] [Accepted: 03/01/2017] [Indexed: 12/31/2022] Open
Abstract
Peri-implantitis caused by multispecies biofilms is a major complication in dental implant treatment. The bacterial infection surrounding dental implants can lead to bone loss and, in turn, to implant failure. A promising strategy to prevent these common complications is the development of implant surfaces that inhibit biofilm development. A reproducible and easy-to-use biofilm model as a test system for large scale screening of new implant surfaces with putative antibacterial potency is therefore of major importance. In the present study, we developed a highly reproducible in vitro four-species biofilm model consisting of the highly relevant oral bacterial species Streptococcus oralis, Actinomyces naeslundii, Veillonella dispar and Porphyromonas gingivalis. The application of live/dead staining, quantitative real time PCR (qRT-PCR), scanning electron microscopy (SEM) and urea-NaCl fluorescence in situ hybridization (urea-NaCl-FISH) revealed that the four-species biofilm community is robust in terms of biovolume, live/dead distribution and individual species distribution over time. The biofilm community is dominated by S. oralis, followed by V. dispar, A. naeslundii and P. gingivalis. The percentage distribution in this model closely reflects the situation in early native plaques and is therefore well suited as an in vitro model test system. Furthermore, despite its nearly native composition, the multispecies model does not depend on nutrient additives, such as native human saliva or serum, and is an inexpensive, easy to handle and highly reproducible alternative to the available model systems. The 96-well plate format enables high content screening for optimized implant surfaces impeding biofilm formation or the testing of multiple antimicrobial treatment strategies to fight multispecies biofilm infections, both exemplary proven in the manuscript.
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Affiliation(s)
- Nadine Kommerein
- Department of Prosthetic Dentistry and Biomedical Materials Science, Hannover Medical School, Hannover, Germany
- * E-mail:
| | - Sascha N. Stumpp
- Department of Prosthetic Dentistry and Biomedical Materials Science, Hannover Medical School, Hannover, Germany
| | - Mathias Müsken
- Institute of Molecular Bacteriology, TWINCORE, Centre of Experimental and Clinical Infection Research, Hannover, Germany
- Department of Molecular Bacteriology, Helmholtz Centre for Infection Research, Braunschweig, Germany
| | - Nina Ehlert
- Institute for Inorganic Chemistry, Leibniz University of Hannover, Hannover, Germany
| | - Andreas Winkel
- Department of Prosthetic Dentistry and Biomedical Materials Science, Hannover Medical School, Hannover, Germany
| | - Susanne Häussler
- Institute of Molecular Bacteriology, TWINCORE, Centre of Experimental and Clinical Infection Research, Hannover, Germany
- Department of Molecular Bacteriology, Helmholtz Centre for Infection Research, Braunschweig, Germany
| | - Peter Behrens
- Institute for Inorganic Chemistry, Leibniz University of Hannover, Hannover, Germany
| | - Falk F. R. Buettner
- Institute of Clinical Biochemistry, Hannover Medical School, Hannover, Germany
| | - Meike Stiesch
- Department of Prosthetic Dentistry and Biomedical Materials Science, Hannover Medical School, Hannover, Germany
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87
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Repurposing Toremifene for Treatment of Oral Bacterial Infections. Antimicrob Agents Chemother 2017; 61:AAC.01846-16. [PMID: 27993858 DOI: 10.1128/aac.01846-16] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2016] [Accepted: 12/11/2016] [Indexed: 12/24/2022] Open
Abstract
The spread of antibiotic resistance and the challenges associated with antiseptics such as chlorhexidine have necessitated a search for new antibacterial agents against oral bacterial pathogens. As a result of failing traditional approaches, drug repurposing has emerged as a novel paradigm to find new antibacterial agents. In this study, we examined the effects of the FDA-approved anticancer agent toremifene against the oral bacteria Porphyromonas gingivalis and Streptococcus mutans We found that the drug was able to inhibit the growth of both pathogens, as well as prevent biofilm formation, at concentrations ranging from 12.5 to 25 μM. Moreover, toremifene was shown to eradicate preformed biofilms at concentrations ranging from 25 to 50 μM. In addition, we found that toremifene prevents P. gingivalis and S. mutans biofilm formation on titanium surfaces. A time-kill study indicated that toremifene is bactericidal against S. mutans Macromolecular synthesis assays revealed that treatment with toremifene does not cause preferential inhibition of DNA, RNA, or protein synthesis pathways, indicating membrane-damaging activity. Biophysical studies using fluorescent probes and fluorescence microscopy further confirmed the membrane-damaging mode of action. Taken together, our results suggest that the anticancer agent toremifene is a suitable candidate for further investigation for the development of new treatment strategies for oral bacterial infections.
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Multilocus Sequence Analysis of Phylogroup 1 and 2 Oral Treponeme Strains. Appl Environ Microbiol 2017; 83:AEM.02499-16. [PMID: 27864174 DOI: 10.1128/aem.02499-16] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2016] [Accepted: 11/14/2016] [Indexed: 02/08/2023] Open
Abstract
More than 75 "species-level" phylotypes of spirochete bacteria belonging to the genus Treponema reside within the human oral cavity. The majority of these oral treponeme phylotypes correspond to as-yet-uncultivated taxa or strains of uncertain standing in taxonomy. Here, we analyze phylogenetic and taxonomic relationships between oral treponeme strains using a multilocus sequence analysis (MLSA) scheme based on the highly conserved 16S rRNA, pyrH, recA, and flaA genes. We utilized this MLSA scheme to analyze genetic data from a curated collection of oral treponeme strains (n = 71) of diverse geographical origins. This comprises phylogroup 1 (n = 23) and phylogroup 2 (n = 48) treponeme strains, including all relevant American Type Culture Collection reference strains. The taxonomy of all strains was confirmed or inferred via the analysis of ca. 1,450-bp 16S rRNA gene sequences using a combination of bioinformatic and phylogenetic approaches. Taxonomic and phylogenetic relationships between the respective treponeme strains were further investigated by analyzing individual and concatenated flaA (1,074-nucleotide [nt]), recA (1,377-nt), and pyrH (696-nt) gene sequence data sets. Our data confirmed the species differentiation between Treponema denticola (n = 41) and Treponema putidum (n = 7) strains. Notably, our results clearly supported the differentiation of the 23 phylogroup 1 treponeme strains into five distinct "species-level" phylotypes. These respectively corresponded to "Treponema vincentii" (n = 11), Treponema medium (n = 1), "Treponema sinensis" (Treponema sp. IA; n = 4), Treponema sp. IB (n = 3), and Treponema sp. IC (n = 4). In conclusion, our MLSA-based approach can be used to effectively discriminate oral treponeme taxa, confirm taxonomic assignment, and enable the delineation of species boundaries with high confidence. IMPORTANCE Periodontal diseases are caused by persistent polymicrobial biofilm infections of the gums and underlying tooth-supporting structures and have a complex and variable etiology. Although Treponema denticola is strongly associated with periodontal diseases, the etiological roles of other treponeme species/phylotypes are less well defined. This is due to a paucity of formal species descriptions and a poor understanding of genetic relationships between oral treponeme taxa. Our study directly addresses these issues. It represents one of the most comprehensive analyses of oral treponeme strains performed to date, including isolates from North America, Europe, and Asia. We envisage that our results will greatly facilitate future metagenomic efforts aimed at characterizing the clinical distributions of oral treponeme species/phylotypes, helping investigators to establish a more detailed understanding of their etiological roles in periodontal diseases and other infectious diseases. Our results are also directly relevant to various polymicrobial tissue infections in animals, which also involve treponeme populations.
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Ogata Y, Nakayama Y, Tatsumi J, Kubota T, Sato S, Nishida T, Takeuchi Y, Onitsuka T, Sakagami R, Nozaki T, Murakami S, Matsubara N, Tanaka M, Yoshino T, Ota J, Nakagawa T, Ishihara Y, Ito T, Saito A, Yamaki K, Matsuzaki E, Hidaka T, Sasaki D, Yaegashi T, Yasuda T, Shibutani T, Noguchi K, Araki H, Ikumi N, Aoyama Y, Kogai H, Nemoto K, Deguchi S, Takiguchi T, Yamamoto M, Inokuchi K, Ito T, Kado T, Furuichi Y, Kanazashi M, Gomi K, Takagi Y, Kubokawa K, Yoshinari N, Hasegawa Y, Hirose T, Sase T, Arita H, Kodama T, Shin K, Izumi Y, Yoshie H. Prevalence and risk factors for peri-implant diseases in Japanese adult dental patients. J Oral Sci 2017; 59:1-11. [DOI: 10.2334/josnusd.16-0027] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
Affiliation(s)
- Yorimasa Ogata
- Department of Periodontology and Research Institute of Oral Science, Nihon University School of Dentistry at Matsudo
| | - Yohei Nakayama
- Department of Periodontology and Research Institute of Oral Science, Nihon University School of Dentistry at Matsudo
| | - Junichi Tatsumi
- Division of Periodontology, Department of Oral Biology and Tissue Engineering, Meikai University School of Dentistry
| | - Takehiko Kubota
- Division of Periodontology, Department of Oral Biological Science, Niigata University Graduate School of Medical and Dental Sciences
| | - Shuichi Sato
- Department of Periodontology, Nihon University School of Dentistry
| | - Tetsuya Nishida
- Department of Periodontology, Nihon University School of Dentistry
| | - Yasuo Takeuchi
- Department of Periodontology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University
| | - Tokuya Onitsuka
- Section of Periodontology, Department of Odontology, Fukuoka Dental College
| | - Ryuji Sakagami
- Section of Periodontology, Department of Odontology, Fukuoka Dental College
| | - Takenori Nozaki
- Department of Periodontology, Osaka University Graduate School of Dentistry
| | - Shinya Murakami
- Department of Periodontology, Osaka University Graduate School of Dentistry
| | | | - Maki Tanaka
- Seikeikai Hospital Internal and Dental Medicine
| | | | - Junya Ota
- Department of Dentistry and Oral Surgery, Keio University School of Medicine
| | - Taneaki Nakagawa
- Department of Dentistry and Oral Surgery, Keio University School of Medicine
| | - Yuichi Ishihara
- Department of Endodontology, School of Dentistry, Matsumoto Dental University
| | - Taichi Ito
- Department of Oral and Maxillofacial Implantology, Tokyo Dental College
| | | | - Keiko Yamaki
- Division of Periodontology and Endodontology, Department of Oral Biology, Tohoku University Graduate School of Dentistry
| | - Etsuko Matsuzaki
- Department of Operative Dentistry and Endodontology, Fukuoka Dental College
| | | | - Daisuke Sasaki
- Division of Periodontology, Department of Conservative Dentistry, Iwate Medical University
| | - Takashi Yaegashi
- Division of Periodontology, Department of Conservative Dentistry, Iwate Medical University
| | - Tadashi Yasuda
- Department of Periodontology, Division of Oral Infection and Disease, Asahi University School of Dentistry
| | - Toshiaki Shibutani
- Department of Periodontology, Division of Oral Infection and Disease, Asahi University School of Dentistry
| | - Kazuyuki Noguchi
- Department of Periodontology, Kagoshima University Graduate School of Medical and Dental Sciences
| | - Hisao Araki
- Department of Restorative and Biomaterials Sciences, Division of Oral Rehabilitation, Meikai University School of Dentistry
| | | | | | | | - Kenji Nemoto
- Department of Periodontal Regeneration, Kanagawa Dental University
| | - Shinji Deguchi
- Department of Periodontal Regeneration, Kanagawa Dental University
| | | | - Matsuo Yamamoto
- Department of Periodontology, Showa University School of Dentistry
| | | | | | - Takashi Kado
- Division of Periodontology and Endodontology, Department of Oral Rehabilitation, School of Dentistry, Health Sciences University of Hokkaido
| | - Yasushi Furuichi
- Division of Periodontology and Endodontology, Department of Oral Rehabilitation, School of Dentistry, Health Sciences University of Hokkaido
| | - Mikimoto Kanazashi
- Department of Periodontology, Tsurumi University School of Dental Medicine
| | - Kazuhiro Gomi
- Department of Periodontology, Tsurumi University School of Dental Medicine
| | | | - Keita Kubokawa
- Department of Periodontology, School of Dentistry, Matsumoto Dental University
| | - Nobuo Yoshinari
- Department of Periodontology, School of Dentistry, Matsumoto Dental University
| | | | | | | | | | - Toshiro Kodama
- Division of Implantology and Periodontology, Department of Highly Advanced Stomatology, Graduate School of Dentistry, Kanagawa Dental University
| | - Kitetsu Shin
- Division of Periodontology, Department of Oral Biology and Tissue Engineering, Meikai University School of Dentistry
| | - Yuichi Izumi
- Department of Periodontology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University
| | - Hiromasa Yoshie
- Division of Periodontology, Department of Oral Biological Science, Niigata University Graduate School of Medical and Dental Sciences
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In Vitro Adherence of Oral Bacteria to Different Types of Tongue Piercings. ScientificWorldJournal 2016; 2016:7349371. [PMID: 27725949 PMCID: PMC5048054 DOI: 10.1155/2016/7349371] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2016] [Accepted: 07/27/2016] [Indexed: 11/25/2022] Open
Abstract
The purpose of this work was to verify in vitro adherence of E. corrodens and S. oralis to the surface of tongue piercings made of surgical steel, titanium, Bioplast, and Teflon. For this, 160 piercings were used for the count of Colony Forming Units (CFU) and 32 piercings for analysis under scanning electron microscopy. Of these, 96 (24 of each type) were individually incubated in 5 mL of BHI broth and 50 μL of inoculum at 37°C/24 h. The other 96 piercings formed the control group and were individually incubated in 5 mL of BHI broth at 37°C/24 h. Plates were incubated at 37°C/48 h for counting of CFU/mL and data were submitted to statistical analysis (p value <0.05). For E. corrodens, difference among types of material was observed (p < 0.001) and titanium and surgical steel showed lower bacterial adherence. The adherence of S. oralis differed among piercings, showing lower colonization (p < 0.007) in titanium and surgical steel piercings. The four types of piercings were susceptible to colonization by E. corrodens and S. oralis, and bacterial adhesion was more significant in those made of Bioplast and Teflon. The piercings presented bacterial colonies on their surface, being higher in plastic piercings probably due to their uneven and rough surface.
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91
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Padial-Molina M, López-Martínez J, O'Valle F, Galindo-Moreno P. Microbial Profiles and Detection Techniques in Peri-Implant Diseases: a Systematic Review. EJOURNAL OF ORAL MAXILLOFACIAL RESEARCH 2016; 7:e10. [PMID: 27833735 PMCID: PMC5100635 DOI: 10.5037/jomr.2016.7310] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/25/2016] [Accepted: 09/07/2016] [Indexed: 01/01/2023]
Abstract
Objectives To describe the microbial profiles of peri-implant diseases and the main detection methods. Material and Methods A literature search was performed in MEDLINE via PubMed database to identify studies on microbial composition of peri-implant surfaces in humans published in the last 5 years. Studies had to have clear implant status definition for health, peri-implant mucositis and/or peri-implantitis and specifically study microbial composition of the peri-implant sulcus. Results A total of 194 studies were screened and 47 included. Peri-implant sites are reported to be different microbial ecosystems compared to periodontal sites. However, differences between periodontal and peri-implant health and disease are not consistent across all studies, possibly due to the bias introduced by the microbial detection technique. New methods non species-oriented are being used to find ‘unexpected’ microbiota not previously described in these scenarios. Conclusions Microbial profile of peri-implant diseases usually includes classic periodontopathogens. However, correlation between studies is difficult, particularly because of the use of different detection methods. New metagenomic techniques should be promoted for future studies to avoid detection bias.
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Affiliation(s)
- Miguel Padial-Molina
- Department of Oral Surgery and Implant Dentistry, School of Dentistry, University of Granada Spain
| | - Jesús López-Martínez
- Department of Oral Surgery and Implant Dentistry, School of Dentistry, University of Granada Spain
| | - Francisco O'Valle
- Department of Pathology and Biopathology and Medicine Regenerative Institute (IBIMER, CIBM), University of Granada Spain
| | - Pablo Galindo-Moreno
- Department of Oral Surgery and Implant Dentistry, School of Dentistry, University of Granada Spain
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92
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Distinct interacting core taxa in co-occurrence networks enable discrimination of polymicrobial oral diseases with similar symptoms. Sci Rep 2016; 6:30997. [PMID: 27499042 PMCID: PMC4976368 DOI: 10.1038/srep30997] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2016] [Accepted: 07/12/2016] [Indexed: 12/30/2022] Open
Abstract
Polymicrobial diseases, which can be life threatening, are caused by the presence and interactions of multiple microbes. Peri-implantitis and periodontitis are representative polymicrobial diseases that show similar clinical symptoms. To establish a means of differentiating between them, we compared microbial species and functional genes in situ by performing metatranscriptomic analyses of peri-implantitis and periodontitis samples obtained from the same subjects (n = 12 each). Although the two diseases differed in terms of 16S rRNA-based taxonomic profiles, they showed similarities with respect to functional genes and taxonomic and virulence factor mRNA profiles. The latter—defined as microbial virulence types—differed from those of healthy periodontal sites. We also showed that networks based on co-occurrence relationships of taxonomic mRNA abundance (co-occurrence networks) were dissimilar between the two diseases. Remarkably, these networks consisted mainly of taxa with a high relative mRNA-to-rRNA ratio, with some showing significant co-occurrence defined as interacting core taxa, highlighting differences between the two groups. Thus, peri-implantitis and periodontitis have shared as well as distinct microbiological characteristics. Our findings provide insight into microbial interactions in polymicrobial diseases with unknown etiologies.
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93
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Isehed C, Holmlund A, Renvert S, Svenson B, Johansson I, Lundberg P. Effectiveness of enamel matrix derivative on the clinical and microbiological outcomes following surgical regenerative treatment of peri-implantitis. A randomized controlled trial. J Clin Periodontol 2016; 43:863-73. [PMID: 27418458 DOI: 10.1111/jcpe.12583] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/13/2016] [Indexed: 11/29/2022]
Abstract
OBJECTIVE This randomized clinical trial aimed at comparing radiological, clinical and microbial effects of surgical treatment of peri-implantitis alone or in combination with enamel matrix derivative (EMD). METHODS Twenty-six subjects were treated with open flap debridement and decontamination of the implant surfaces with gauze and saline preceding adjunctive EMD or no EMD. Bone level (BL) change was primary outcome and secondary outcomes were changes in pocket depth (PD), plaque, pus, bleeding and the microbiota of the peri-implant biofilm analyzed by the Human Oral Microbe Identification Microarray over a time period of 12 months. RESULTS In multivariate modelling, increased marginal BL at implant site was significantly associated with EMD, the number of osseous walls in the peri-implant bone defect and a Gram+/aerobic microbial flora, whereas reduced BL was associated with a Gram-/anaerobic microbial flora and presence of bleeding and pus, with a cross-validated predictive capacity (Q(2) ) of 36.4%. Similar, but statistically non-significant, trends were seen for BL, PD, plaque, pus and bleeding in univariate analysis. CONCLUSION Adjunctive EMD to surgical treatment of peri-implantitis was associated with prevalence of Gram+/aerobic bacteria during the follow-up period and increased marginal BL 12 months after treatment.
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Affiliation(s)
- Catrine Isehed
- Department of Odontology/Molecular Periodontology, Umeå University, Umeå, Sweden.,Department of Periodontology, Gävle County Hospital, Gävle, Sweden.,Center for Research & Development, Uppsala University/Region Gävleborg, Gävle, Sweden
| | - Anders Holmlund
- Department of Periodontology, Gävle County Hospital, Gävle, Sweden.,Center for Research & Development, Uppsala University/Region Gävleborg, Gävle, Sweden
| | - Stefan Renvert
- Department of Health Sciences, Kristianstad University, Kristianstad, Sweden.,School of Dental Sciences, Trinity College, Dublin, Ireland.,Blekinge Institute of Technology, Karlskrona, Sweden
| | - Björn Svenson
- Department of Oral Radiology, Postgraduate Dental Education Center, Örebro, Sweden.,Faculty of Medicine and Health, School of Health and Medical Sciences, Örebro University, Örebro, Sweden
| | | | - Pernilla Lundberg
- Department of Odontology/Molecular Periodontology, Umeå University, Umeå, Sweden.
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95
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Subgingival microbiota in individuals with severe chronic periodontitis. JOURNAL OF MICROBIOLOGY, IMMUNOLOGY, AND INFECTION = WEI MIAN YU GAN RAN ZA ZHI 2016; 51:226-234. [PMID: 27262209 DOI: 10.1016/j.jmii.2016.04.007] [Citation(s) in RCA: 57] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/30/2015] [Revised: 03/16/2016] [Accepted: 04/01/2016] [Indexed: 11/21/2022]
Abstract
BACKGROUND/PURPOSE Subgingival microorganisms are potentially associated with periodontal diseases. However, the correlation between the variance in the periodontal microbiome and the prevalence and severity of periodontitis remains unclear. The aim of this study was to determine the subgingival microbiota in Taiwanese individuals with severe chronic periodontitis (SP). METHODS The composition of the subgingival microbiota in healthy and diseased individuals was compared using a 16S rRNA metagenomic approach and quantitative polymerase chain reaction (qPCR). A total of 20 samples, including 10 from healthy individuals and 10 from SP patients, were analyzed. RESULTS We found high microbial diversity, with an average of 774 classified phylotypes per sample and a total of six bacterial phyla across all samples. Cluster analysis by principal component analysis and heat map showed that the bacterial communities were different in the two groups. Streptococcus dominated across all the healthy samples, whereas Prevotella, Porphyromonas, and Treponema were highly abundant across all diseased samples. At least 13 bacterial genera were conserved among all the samples. Only eight genera, including Lautropia, Parvimonas, Actinomyces, Capnocytophaga, Paludibacter, Streptococcus, Haemophilus, and Corynebacterium, were significantly enriched in the healthy group, and six genera, including Porphyromonas, Treponema, Tannerella, Aggregatibacter, Peptostreptococcus, and Filifactor, were significantly enriched in the diseased group. Furthermore, a trend of abundance of bacteria at the species level measured by qPCR in all samples was consistent with the 16S rRNA metagenomics results. CONCLUSION This study is the first in Taiwan to provide a picture of the microbiome in SP via 16S rRNA metagenomics.
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96
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Yu XL, Chan Y, Zhuang LF, Lai HC, Lang NP, Lacap-Bugler DC, Leung WK, Watt RM. Distributions of Synergistetes in clinically-healthy and diseased periodontal and peri-implant niches. Microb Pathog 2016; 94:90-103. [DOI: 10.1016/j.micpath.2015.11.029] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2015] [Revised: 11/28/2015] [Accepted: 11/30/2015] [Indexed: 02/07/2023]
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97
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Canullo L, Radovanović S, Delibasic B, Blaya JA, Penarrocha D, Rakic M. The predictive value of microbiological findings on teeth, internal and external implant portions in clinical decision making. Clin Oral Implants Res 2016; 28:512-519. [PMID: 27079924 DOI: 10.1111/clr.12828] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/27/2016] [Indexed: 01/08/2023]
Abstract
AIM The primary aim of this study was to evaluate 23 pathogens associated with peri-implantitis at inner part of implant connections, in peri-implant and periodontal pockets between patients suffering peri-implantitis and participants with healthy peri-implant tissues; the secondary aim was to estimate the predictive value of microbiological profile in patients wearing dental implants using data mining methods. MATERIAL AND METHODS Fifty participants included in the present case─control study were scheduled for collection of plaque samples from the peri-implant pockets, internal connection, and periodontal pocket. Real-time polymerase chain reaction was performed to quantify 23 pathogens. Three predictive models were developed using C4.5 decision trees to estimate the predictive value of microbiological profile between three experimental sites. RESULTS The final sample included 47 patients (22 healthy controls and 25 diseased cases), 90 implants (43 with healthy peri-implant tissues and 47 affected by peri-implantitis). Total and mean pathogen counts at inner portions of the implant connection, in peri-implant and periodontal pockets were generally increased in peri-implantitis patients when compared to healthy controls. The inner portion of the implant connection, the periodontal pocket and peri-implant pocket, respectively, presented a predictive value of microbiologic profile of 82.78%, 94.31%, and 97.5% of accuracy. CONCLUSION This study showed that microbiological profile at all three experimental sites is differently characterized between patients suffering peri-implantitis and healthy controls. Data mining analysis identified Parvimonas micra as a highly accurate predictor of peri-implantitis when present in peri-implant pocket while this method generally seems to be promising for diagnosis of such complex infections.
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Affiliation(s)
| | - Sandro Radovanović
- Centre for Business Decision-making, Faculty of Organizational Sciences, University of Belgrade, Belgrade, Serbia
| | - Boris Delibasic
- Centre for Business Decision-making, Faculty of Organizational Sciences, University of Belgrade, Belgrade, Serbia
| | | | - David Penarrocha
- Department of Oral Surgery, University of Valencia, Valencia, Spain
| | - Mia Rakic
- Institute for Biological Research "Sinisa Stankovic", University of Belgrade, Belgrade, Serbia.,Centre for Osteoarticular and Dental Tissue Engineering, INSERM U791, Faculty of Dental Surgery, University of Nantes, Nantes, France
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98
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Predicting microbial interactions through computational approaches. Methods 2016; 102:12-9. [PMID: 27025964 DOI: 10.1016/j.ymeth.2016.02.019] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2015] [Revised: 01/15/2016] [Accepted: 02/23/2016] [Indexed: 11/22/2022] Open
Abstract
Microorganisms play a vital role in various ecosystems and characterizing interactions between them is an essential step towards understanding the organization and function of microbial communities. Computational prediction has recently become a widely used approach to investigate microbial interactions. We provide a thorough review of emerging computational methods organized by the type of data they employ. We highlight three major challenges in inferring interactions using metagenomic survey data and discuss the underlying assumptions and mathematics of interaction inference algorithms. In addition, we review interaction prediction methods relying on metabolic pathways, which are increasingly used to reveal mechanisms of interactions. Furthermore, we also emphasize the importance of mining the scientific literature for microbial interactions - a largely overlooked data source for experimentally validated interactions.
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99
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Bizzarro S, Laine ML, Buijs MJ, Brandt BW, Crielaard W, Loos BG, Zaura E. Microbial profiles at baseline and not the use of antibiotics determine the clinical outcome of the treatment of chronic periodontitis. Sci Rep 2016; 6:20205. [PMID: 26830979 PMCID: PMC4735321 DOI: 10.1038/srep20205] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2015] [Accepted: 12/23/2015] [Indexed: 01/22/2023] Open
Abstract
Antibiotics are often used in the treatment of chronic periodontitis, which is a major cause of tooth loss. However, evidence in favour of a microbial indication for the prescription of antibiotics is lacking, which may increase the risk of the possible indiscriminate use of antibiotics, and consequent, microbial resistance. Here, using an open-ended technique, we report the changes in the subgingival microbiome up to one year post-treatment of patients treated with basic periodontal therapy with or without antibiotics. Antibiotics resulted in a greater influence on the microbiome 3 months after therapy, but this difference disappeared at 6 months. Greater microbial diversity, specific taxa and certain microbial co-occurrences at baseline and not the use of antibiotics predicted better clinical treatment outcomes. Our results demonstrate the predictive value of specific subgingival bacterial profiles for the decision to prescribe antibiotics in the treatment of periodontitis, but they also indicate the need for alternative therapies based on ecological approaches.
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Affiliation(s)
- S Bizzarro
- Department of Periodontology Academic Centre for Dentistry Amsterdam (ACTA), University of Amsterdam and VU University Amsterdam, The Netherlands
| | - M L Laine
- Department of Periodontology Academic Centre for Dentistry Amsterdam (ACTA), University of Amsterdam and VU University Amsterdam, The Netherlands
| | - M J Buijs
- Department of Preventive Dentistry Academic Centre for Dentistry Amsterdam (ACTA), University of Amsterdam and VU University Amsterdam, The Netherlands
| | - B W Brandt
- Department of Preventive Dentistry Academic Centre for Dentistry Amsterdam (ACTA), University of Amsterdam and VU University Amsterdam, The Netherlands
| | - W Crielaard
- Department of Preventive Dentistry Academic Centre for Dentistry Amsterdam (ACTA), University of Amsterdam and VU University Amsterdam, The Netherlands
| | - B G Loos
- Department of Periodontology Academic Centre for Dentistry Amsterdam (ACTA), University of Amsterdam and VU University Amsterdam, The Netherlands
| | - E Zaura
- Department of Preventive Dentistry Academic Centre for Dentistry Amsterdam (ACTA), University of Amsterdam and VU University Amsterdam, The Netherlands
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100
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Pozhitkov AE, Daubert D, Brochwicz Donimirski A, Goodgion D, Vagin MY, Leroux BG, Hunter CM, Flemmig TF, Noble PA, Bryers JD. Interruption of Electrical Conductivity of Titanium Dental Implants Suggests a Path Towards Elimination Of Corrosion. PLoS One 2015; 10:e0140393. [PMID: 26461491 PMCID: PMC4604158 DOI: 10.1371/journal.pone.0140393] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2015] [Accepted: 09/24/2015] [Indexed: 01/30/2023] Open
Abstract
Peri-implantitis is an inflammatory disease that results in the destruction of soft tissue and bone around the implant. Titanium implant corrosion has been attributed to the implant failure and cytotoxic effects to the alveolar bone. We have documented the extent of titanium release into surrounding plaque in patients with and without peri-implantitis. An in vitro model was designed to represent the actual environment of an implant in a patient’s mouth. The model uses actual oral microbiota from a volunteer, allows monitoring electrochemical processes generated by biofilms growing on implants and permits control of biocorrosion electrical current. As determined by next generation DNA sequencing, microbial compositions in experiments with the in vitro model were comparable with the compositions found in patients with implants. It was determined that the electrical conductivity of titanium implants was the key factor responsible for the biocorrosion process. The interruption of the biocorrosion current resulted in a 4–5 fold reduction of corrosion. We propose a new design of dental implant that combines titanium in zero oxidation state for osseointegration and strength, interlaid with a nonconductive ceramic. In addition, we propose electrotherapy for manipulation of microbial biofilms and to induce bone healing in peri-implantitis patients.
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Affiliation(s)
- Alex E. Pozhitkov
- Department of Oral Health Sciences, University of Washington, Box 357444, Seattle, Washington, United States of America
- * E-mail:
| | - Diane Daubert
- Department of Periodontics, University of Washington, Box 357444, Seattle, Washington, United States of America
| | - Ashley Brochwicz Donimirski
- Department of Oral Health Sciences, University of Washington, Box 357444, Seattle, Washington, United States of America
| | - Douglas Goodgion
- Department of Oral Health Sciences, University of Washington, Box 357444, Seattle, Washington, United States of America
| | - Mikhail Y. Vagin
- Department of Physics, Chemistry and Biology (IFM) Linköping University, SE-581 83, LINKÖPING, Sweden
| | - Brian G. Leroux
- Department of Oral Health Sciences, University of Washington, Box 357444, Seattle, Washington, United States of America
| | - Colby M. Hunter
- PhD Program in Microbiology, Alabama State University, Montgomery, Alabama, United States of America
| | - Thomas F. Flemmig
- Faculty of Dentistry, The University of Hong Kong, Prince Philip Dental Hospital, 34 Hospital Road, Sai Ying Pun, Hong Kong SAR, Peoples’ Republic of China
| | - Peter A. Noble
- PhD Program in Microbiology, Alabama State University, Montgomery, Alabama, United States of America
| | - James D. Bryers
- Department of Bioengineering, University of Washington, 3720 15th Avenue NE, Seattle, Washington, United States of America
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