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Xu J, Chen C, Gan S, Liao Y, Fu R, Hou C, Yang S, Zheng Z, Chen W. The Potential Value of Probiotics after Dental Implant Placement. Microorganisms 2023; 11:1845. [PMID: 37513016 PMCID: PMC10383117 DOI: 10.3390/microorganisms11071845] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2023] [Revised: 07/15/2023] [Accepted: 07/18/2023] [Indexed: 07/30/2023] Open
Abstract
Dental implantation is currently the optimal solution for tooth loss. However, the health and stability of dental implants have emerged as global public health concerns. Dental implant placement, healing of the surgical site, osseointegration, stability of bone tissues, and prevention of peri-implant diseases are challenges faced in achieving the long-term health and stability of implants. These have been ongoing concerns in the field of oral implantation. Probiotics, as beneficial microorganisms, play a significant role in the body by inhibiting pathogens, promoting bone tissue homeostasis, and facilitating tissue regeneration, modulating immune-inflammatory levels. This review explores the potential of probiotics in addressing post-implantation challenges. We summarize the existing research regarding the importance of probiotics in managing dental implant health and advocate for further research into their potential applications.
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Affiliation(s)
- Jia Xu
- State Key Laboratory of Oral Diseases and National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China
- Department of Oral Prosthodontics, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China
| | - Chenfeng Chen
- State Key Laboratory of Oral Diseases and National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China
- Department of General Dentistry, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China
| | - Shuaiqi Gan
- State Key Laboratory of Oral Diseases and National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China
- Department of Oral Prosthodontics, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China
| | - Yihan Liao
- State Key Laboratory of Oral Diseases and National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China
- Department of Oral Prosthodontics, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China
| | - Ruijie Fu
- State Key Laboratory of Oral Diseases and National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China
- Department of Oral Prosthodontics, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China
| | - Chuping Hou
- State Key Laboratory of Oral Diseases and National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China
- Department of Oral Prosthodontics, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China
| | - Shuhan Yang
- State Key Laboratory of Oral Diseases and National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China
- Department of Oral Prosthodontics, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China
| | - Zheng Zheng
- State Key Laboratory of Oral Diseases and National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China
- Department of Oral Prosthodontics, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China
| | - Wenchuan Chen
- State Key Laboratory of Oral Diseases and National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China
- Department of Oral Prosthodontics, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China
- Jinjiang Out-Patient Section, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China
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Matsubara VH, Fakhruddin KS, Ngo H, Samaranayake LP. Probiotic Bifidobacteria in Managing Periodontal Disease: A Systematic Review. Int Dent J 2022; 73:11-20. [PMID: 36535806 PMCID: PMC9875235 DOI: 10.1016/j.identj.2022.11.018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2022] [Revised: 11/20/2022] [Accepted: 11/21/2022] [Indexed: 12/23/2022] Open
Abstract
Although various probiotic organisms have been evaluated for their utility in the management of periodontitis, their strain-specific mechanisms of action are still unclear. We aimed to systematically review the effect of bifidobacterial probiotics on periodontopathogens and host immune responses in periodontal diseases. An electronic search of articles published until June 2022 in Medline, PubMed, Web of Science, and Cochrane Library databases was performed. Randomised controlled trials (RCTs) and in vitro and animal studies were assessed, and the data regarding antimicrobial properties, immunomodulation, and clinical outcomes were analysed. A total of 304 studies were screened, but only 3 RCTs and 6 animal and in vitro studies met the inclusion criteria. The use of different strains of bifidobacteria led to (1) a reduction of key players of the red complex periodontopathogens; (2) reduced levels of pro-inflammatory cytokines (eg, interleukin [IL]1-β and IL-8) and higher levels of anti-inflammatory cytokines (IL-10); (3) enhanced levels of osteoprotegerin and reduced levels of receptor activator of nuclear factor kappa-B ligand; and (4) a reduction of the dental plaque, bleeding on probing, alveolar bone loss, and clinical attachment loss. Bifidobacterial probiotic adjuvant supplementation, especially with Bifidobacterium animalis subspecies lactis, appears to help improve clinical periodontal parameters and develop a healthy plaque microbiome through microbiological and immunomodulatory pathways. Further human and animal studies are warranted prior to the therapeutic use of bifidobacteria in the routine management of periodontal infections.
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Affiliation(s)
- Victor Haruo Matsubara
- UWA Dental School, University of Western Australia, Perth, Western Australia, Australia,Corresponding author. Dental School, University of Western Australia, 17 Monash Avenue, Nedlands, Perth, WA 6009, Australia.
| | - Kausar Sadia Fakhruddin
- Department of Preventive and Restorative Dentistry, University of Sharjah, Sharjah, United Arab Emirates
| | - Hien Ngo
- UWA Dental School, University of Western Australia, Perth, Western Australia, Australia
| | - Lakshman P. Samaranayake
- Faculty of Dentistry, The University of Hong Kong, Hong Kong, Special Administrative Region, China
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Yang R, Liu T, Pang C, Cai Y, Lin Z, Guo L, Wei X. The Regulatory Effect of Coaggregation Between Fusobacterium nucleatum and Streptococcus gordonii on the Synergistic Virulence to Human Gingival Epithelial Cells. Front Cell Infect Microbiol 2022; 12:879423. [PMID: 35573793 PMCID: PMC9100429 DOI: 10.3389/fcimb.2022.879423] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2022] [Accepted: 04/04/2022] [Indexed: 11/13/2022] Open
Abstract
In subgingival plaque biofilms, Fusobacterium nucleatum is closely related to the occurrence and development of periodontitis. Streptococcus gordonii, as an accessory pathogen, can coaggregate with periodontal pathogens, facilitating the subgingival colonization of periodontal pathogens. Studies have shown that F. nucleatum can coaggregate with S. gordonii and colonize the subgingival plaque. However, most studies have focused on monocultures or coinfection of species and the potential impact of coaggregation between the two species on periodontal interactions to human gingival epithelial cells (hGECs) remains poorly understood. The present study explored the effect of coaggregation between F. nucleatum and S. gordonii on subgingival synergistic virulence to hGECs. The results showed that coaggregation inhibited the adhesion and invasion of F. nucleatum to hGECs compared with that in the F. nucleatum monoculture and coinfection group. Coaggregation and coinfection with F. nucleatum both enhanced S. gordonii adhesion to hGECs, but neither of the two groups affected S. gordonii invasion to hGECs compared with S. gordonii monoculture. The gene expression levels of TLR2 and TLR4 in hGECs in the coaggregation group were higher than those in the monoculture groups but lower than those in the coinfection group. Compared with coinfection, the coaggregation inhibited apoptosis of hGECs and promoted the secretion of the proinflammatory cytokines TNF-α and IL-6 by hGECs, showed a synergistic inflammatory effect, while coaggregation inhibited the secretion of the anti-inflammatory cytokine TGF-β1. Coaggregation enhanced the phosphorylation of p65, p38, and JNK proteins and therefore activated the NF-κB and MAPK signaling pathways. Pretreatment with a pathway antagonist/inhibitor decreased the phosphorylation levels of proteins and the secretion of TNF-α and IL-6. In conclusion, coaggregation inhibited the adhesion and invasion of F. nucleatum to hGECs. However, it enhanced the adhesion of S. gordonii to hGECs. Compared with coinfection, coaggregation inhibited the apoptosis of hGECs. The coaggregation coordinately promoted the secretion of TNF-α and IL-6 by hGECs through the TLR/NF-κB and TLR/MAPK signaling pathways while inhibiting the secretion of TGF-β1, thus aggravating the inflammatory response of hGECs.
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Affiliation(s)
- Ruiqi Yang
- Hospital of Stomatology, Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou, China
- Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, Guangzhou, China
| | - Tingjun Liu
- Hospital of Stomatology, Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou, China
- Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, Guangzhou, China
| | - Chunfeng Pang
- Hospital of Stomatology, Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou, China
- Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, Guangzhou, China
| | - Yanling Cai
- Hospital of Stomatology, Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou, China
- Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, Guangzhou, China
| | - Zhengmei Lin
- Hospital of Stomatology, Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou, China
- Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, Guangzhou, China
| | - Lihong Guo
- Hospital of Stomatology, Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou, China
- Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, Guangzhou, China
| | - Xi Wei
- Hospital of Stomatology, Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou, China
- Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, Guangzhou, China
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Luo TL, Vanek ME, Gonzalez-Cabezas C, Marrs CF, Foxman B, Rickard AH. In vitro model systems for exploring oral biofilms: From single-species populations to complex multi-species communities. J Appl Microbiol 2022; 132:855-871. [PMID: 34216534 PMCID: PMC10505481 DOI: 10.1111/jam.15200] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2021] [Revised: 06/05/2021] [Accepted: 06/29/2021] [Indexed: 12/13/2022]
Abstract
Numerous in vitro biofilm model systems are available to study oral biofilms. Over the past several decades, increased understanding of oral biology and advances in technology have facilitated more accurate simulation of intraoral conditions and have allowed for the increased generalizability of in vitro oral biofilm studies. The integration of contemporary systems with confocal microscopy and 16S rRNA community profiling has enhanced the capabilities of in vitro biofilm model systems to quantify biofilm architecture and analyse microbial community composition. In this review, we describe several model systems relevant to modern in vitro oral biofilm studies: the constant depth film fermenter, Sorbarod perfusion system, drip-flow reactor, modified Robbins device, flowcells and microfluidic systems. We highlight how combining these systems with confocal microscopy and community composition analysis tools aids exploration of oral biofilm development under different conditions and in response to antimicrobial/anti-biofilm agents. The review closes with a discussion of future directions for the field of in vitro oral biofilm imaging and analysis.
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Affiliation(s)
- Ting L. Luo
- Department of Epidemiology, University of Michigan School of Public Health, Ann Arbor, MI, USA
| | - Michael E. Vanek
- Department of Epidemiology, University of Michigan School of Public Health, Ann Arbor, MI, USA
| | - Carlos Gonzalez-Cabezas
- Department of Cariology, Restorative Sciences and Endodontics, University of Michigan School of Dentistry, Ann Arbor, MI, USA
| | - Carl F. Marrs
- Department of Epidemiology, University of Michigan School of Public Health, Ann Arbor, MI, USA
| | - Betsy Foxman
- Department of Epidemiology, University of Michigan School of Public Health, Ann Arbor, MI, USA
| | - Alexander H. Rickard
- Department of Epidemiology, University of Michigan School of Public Health, Ann Arbor, MI, USA
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Afonso AC, Sousa M, Simões LC, Simões M. Phytochemicals Against Drug-Resistant Bacterial Biofilms and Use of Green Extraction Solvents to Increase Their Bioactivity. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2022. [DOI: 10.1007/5584_2022_723] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Pai M, Routh S, Rajesh G, Shenoy R, Sarit S. Effect of Probiotics on Dental Caries and Periodontal Pathogens: An In Vitro Study. JOURNAL OF OROFACIAL SCIENCES 2019. [DOI: 10.4103/jofs.jofs_41_19] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
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Speranza B, Liso A, Corbo MR. Use of design of experiments to optimize the production of microbial probiotic biofilms. PeerJ 2018; 6:e4826. [PMID: 30018849 PMCID: PMC6044272 DOI: 10.7717/peerj.4826] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2018] [Accepted: 05/02/2018] [Indexed: 12/31/2022] Open
Abstract
Here, we describe the production of a probiotic biofilm through three intermediate steps: (1) measurement of the adhesion capacity of 15 probiotic strains to evaluate their tendency to form biofilm on different surfaces (stainless steel, glass, and polycarbonate); (2) evaluation of the effects of pH, temperature, cellular growth phase, agitation, and presence of surfactants on probiotic biofilm formation (BF) through the Design of Experiments (DoE) approach; (3) study of the effects of pH, temperature and surfactants concentration on probiotic BF using the Central Composite Design. Finally, we show that biofilms pre-formed by selected probiotics can delay the growth of pathogens, such as Listeria monocytogenes chosen as model organism. Among the tested strains, Bifidobacterium infantis DSM20088 and Lactobacillus reuteri DSM20016 were found to be as the probiotics able to ensure the greatest adhesion (over 6 Log CFU cm2) to the surfaces tested in a very short time (<24 h). Cellular growth phase and agitation of the medium were factors not affecting BF, pH exerted a very bland effect and a greater tendency to adhesion was observed when the temperature was about 30 °C. The results obtained in the last experimental phase suggest that our probiotic biofilms can be used as an efficient mean to delay the growth of L. monocytogenes: the λ phase length, in fact, was longer in samples containing probiotic biofilms (0.30-1.02 h) against 0.08 h observed in the control samples. A reduction of the maximum cell load was also observed (6.99-7.06 Log CFU mL-1 against about 8 Log CFU mL-1 observed in the control samples).
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Affiliation(s)
- Barbara Speranza
- Department of the Science of Agriculture, Food and Environment (SAFE), University of Foggia, Foggia, Italy
| | - Arcangelo Liso
- Department of Medical and Surgical Sciences, University of Foggia, Polo Biomedico, Foggia, Italy
| | - Maria Rosaria Corbo
- Department of the Science of Agriculture, Food and Environment (SAFE), University of Foggia, Foggia, Italy
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8
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Velmourougane K, Prasanna R, Saxena AK, Singh SB, Chawla G, Kaushik R, Ramakrishnan B, Nain L. Modulation of growth media influences aggregation and biofilm formation between Azotobacter chroococcum and Trichoderma viride. APPL BIOCHEM MICRO+ 2017. [DOI: 10.1134/s0003683817050179] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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9
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Velmourougane K, Prasanna R. Influence of l-amino acids on aggregation and biofilm formation in Azotobacter chroococcum and Trichoderma viride. J Appl Microbiol 2017; 123:977-991. [PMID: 28731279 DOI: 10.1111/jam.13534] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2017] [Revised: 06/20/2017] [Accepted: 07/07/2017] [Indexed: 02/02/2023]
Abstract
AIM The effects of l-amino acids on growth and biofilm formation in Azotobacter chroococcum (Az) and Trichoderma viride (Tv) as single (Az, Tv) and staggered inoculated cultures (Az-Tv, Tv-Az) were investigated. METHODS AND RESULTS A preliminary study using a set of 20 l-amino acids, identified 6 amino acids (l-Glu, l-Gln, l-His, l-Ser, l-Thr and l-Trp) which significantly enhanced growth and biofilm formation. Supplementation of these amino acids at different concentrations revealed that 40 mmol l-1 was most effective. l-Glu and l-Gln favoured planktonic growth in both single and in staggered inoculated cultures, while l-Trp and l-Thr, enhanced aggregation and biofilm formation. Addition of l-Glu or l-Gln increased carbohydrate content and planktonic population. Principal component analysis revealed the significant role of proteins in growth and biofilm formation, particularly with supplementation of l-Trp, l-Thr and l-Ser. Azotobacter was found to function better as biofilm under staggered inoculated culture with Trichoderma. CONCLUSIONS The results illustrate that amino acids play crucial roles in microbial biofilm formation, by influencing growth, aggregation and carbohydrates synthesized. SIGNIFICANCE AND IMPACT OF THE STUDY The differential and specific roles of amino acids on biofilm formation are of significance for agriculturally important micro-organisms that grow as biofilms, colonize and benefit the plants more effectively.
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Affiliation(s)
- K Velmourougane
- Division of Microbiology, ICAR-Indian Agricultural Research Institute, New Delhi, India
| | - R Prasanna
- Division of Microbiology, ICAR-Indian Agricultural Research Institute, New Delhi, India
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Velmourougane K, Prasanna R, Singh SB, Kumar R, Saha S. Sequence of inoculation influences the nature of extracellular polymeric substances and biofilm formation in Azotobacter chroococcum and Trichoderma viride. FEMS Microbiol Ecol 2017; 93:3814244. [DOI: 10.1093/femsec/fix066] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2017] [Accepted: 05/10/2017] [Indexed: 11/13/2022] Open
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11
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Jung HS, Ehlers MM, Lombaard H, Redelinghuys MJ, Kock MM. Etiology of bacterial vaginosis and polymicrobial biofilm formation. Crit Rev Microbiol 2017; 43:651-667. [PMID: 28358585 DOI: 10.1080/1040841x.2017.1291579] [Citation(s) in RCA: 69] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
Microorganisms in nature rarely exist in a planktonic form, but in the form of biofilms. Biofilms have been identified as the cause of many chronic and persistent infections and have been implicated in the etiology of bacterial vaginosis (BV). Bacterial vaginosis is the most common form of vaginal infection in women of reproductive age. Similar to other biofilm infections, BV biofilms protect the BV-related bacteria against antibiotics and cause recurrent BV. In this review, an overview of BV-related bacteria, conceptual models and the stages involved in the polymicrobial BV biofilm formation will be discussed.
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Affiliation(s)
- Hyun-Sul Jung
- a Department of Medical Microbiology, Faculty of Health Sciences , University of Pretoria , Pretoria , South Africa
| | - Marthie M Ehlers
- a Department of Medical Microbiology, Faculty of Health Sciences , University of Pretoria , Pretoria , South Africa.,b Department of Medical Microbiology, Tshwane Academic Division , National Health Laboratory Service (NHLS) , Pretoria , South Africa
| | - Hennie Lombaard
- c Gauteng Department of Health, Rahima Moosa Mother and Child Hospital, Wits Obstetrics and Gynaecology Clinical Research Division, Department of Obstetrics and Gynaecology , University of Witwatersrand , Johannesburg , South Africa
| | - Mathys J Redelinghuys
- a Department of Medical Microbiology, Faculty of Health Sciences , University of Pretoria , Pretoria , South Africa
| | - Marleen M Kock
- a Department of Medical Microbiology, Faculty of Health Sciences , University of Pretoria , Pretoria , South Africa.,b Department of Medical Microbiology, Tshwane Academic Division , National Health Laboratory Service (NHLS) , Pretoria , South Africa
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12
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Levin-Sparenberg E, Shin J, Hastings E, Freeland M, Segaloff H, Rickard A, Foxman B. High-throughput quantitative method for assessing coaggregation among oral bacterial species. Lett Appl Microbiol 2016; 63:274-81. [DOI: 10.1111/lam.12622] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2016] [Revised: 06/10/2016] [Accepted: 07/01/2016] [Indexed: 12/14/2022]
Affiliation(s)
- E. Levin-Sparenberg
- Epidemiology Department; School of Public Health; University of Michigan; Ann Arbor MI USA
| | - J.M. Shin
- Department of Periodontics and Oral Medicine; University of Michigan School of Dentistry; Ann Arbor MI USA
| | - E.M. Hastings
- Department of Chemical Engineering; University of Michigan; Ann Arbor MI USA
| | - M. Freeland
- Epidemiology Department; School of Public Health; University of Michigan; Ann Arbor MI USA
| | - H. Segaloff
- Epidemiology Department; School of Public Health; University of Michigan; Ann Arbor MI USA
| | - A.H. Rickard
- Epidemiology Department; School of Public Health; University of Michigan; Ann Arbor MI USA
| | - B. Foxman
- Epidemiology Department; School of Public Health; University of Michigan; Ann Arbor MI USA
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13
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Valdez RMA, Dos Santos VR, Caiaffa KS, Danelon M, Arthur RA, Negrini TDC, Delbem ACB, Duque C. Comparative in vitro investigation of the cariogenic potential of bifidobacteria. Arch Oral Biol 2016; 71:97-103. [PMID: 27475723 DOI: 10.1016/j.archoralbio.2016.07.005] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2016] [Revised: 06/03/2016] [Accepted: 07/14/2016] [Indexed: 12/23/2022]
Abstract
OBJECTIVE This study aimed to assess the in vitro cariogenic potential of some Bifidobacterium species in comparison with caries-associated bacteria. DESIGN Bifidobacterium lactis, Bifidobacterium longum, Bifidobacterium animalis, Bifidobacterium dentium, Lactobacillus acidophilus, Lactobacillus casei, Actinomyces israelii, Streptococcus sobrinus and Streptococcus mutans were tested for acidogenicity and aciduricity by measuring the pH of the cultures after growth in glucose and bacterial growth after exposure to acid solutions. Biofilm biomass was determined for each species either alone or associated with S. mutans or S. mutans/S. sobrinus. Enamel hardness was analyzed before and after 7-days biofilm formation using bacterial combinations. RESULTS B. animalis and B. longum were the most acidogenic and aciduric strains, comparable to caries-associated bacteria, such as S. mutans and L. casei. All species had a significantly increased biofilm when combined either with S. mutans or with S. mutans/S. sobrinus. The greatest enamel surface loss was produced when B. longum or B. animalis were inoculated with S. mutans, similar to L. casei and S. sobrinus. All strains induced similar enamel demineralization when combined with S. mutans/S. sobrinus, except by B. lactis. CONCLUSION The ability to produce acidic environments and to enhance biofilm formation leading to increased demineralization may mean that Bifidobacterium species, especially B. animalis and B. longum, are potentially cariogenic.
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Affiliation(s)
- Remberto Marcelo Argandoña Valdez
- UNESP - Univ. Estadual Paulista, Araçatuba Dental School, Department of Pediatric Dentistry and Public Health, Rua José Bonifácio, 1193, 16015050, Araçatuba, SP, Brazil
| | - Vanessa Rodrigues Dos Santos
- UNESP - Univ. Estadual Paulista, Araçatuba Dental School, Department of Pediatric Dentistry and Public Health, Rua José Bonifácio, 1193, 16015050, Araçatuba, SP, Brazil
| | - Karina Sampaio Caiaffa
- UNESP - Univ. Estadual Paulista, Araçatuba Dental School, Department of Restorative Dentistry, Rua José Bonifácio, 1193, 16015050, Araçatuba, SP, Brazil
| | - Marcelle Danelon
- UNESP - Univ. Estadual Paulista, Araçatuba Dental School, Department of Pediatric Dentistry and Public Health, Rua José Bonifácio, 1193, 16015050, Araçatuba, SP, Brazil
| | - Rodrigo Alex Arthur
- UFRGS - Federal University of Rio Grande do Sul, Faculty of Dentistry, Department of Preventive Dentistry, Rua Ramiro Barcelos, 2492, Bairro Santa Cecília, 90035-003, Porto Alegre, RS, Brazil
| | - Thais de Cássia Negrini
- UFRGS - Federal University of Rio Grande do Sul, Faculty of Dentistry, Department of Conservative Dentistry, Rua Ramiro Barcelos, 2492, Bairro Santa Cecília, 90035-003, Porto Alegre, RS, Brazil
| | - Alberto Carlos Botazzo Delbem
- UNESP - Univ. Estadual Paulista, Araçatuba Dental School, Department of Pediatric Dentistry and Public Health, Rua José Bonifácio, 1193, 16015050, Araçatuba, SP, Brazil
| | - Cristiane Duque
- UNESP - Univ. Estadual Paulista, Araçatuba Dental School, Department of Pediatric Dentistry and Public Health, Rua José Bonifácio, 1193, 16015050, Araçatuba, SP, Brazil.
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Jäsberg H, Söderling E, Endo A, Beighton D, Haukioja A. Bifidobacteria inhibit the growth of Porphyromonas gingivalis but not of Streptococcus mutans in an in vitro biofilm model. Eur J Oral Sci 2016; 124:251-8. [PMID: 27061393 DOI: 10.1111/eos.12266] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/05/2016] [Indexed: 12/27/2022]
Abstract
There is growing interest in the use of probiotic bifidobacteria for enhancement of the therapy, and in the prevention, of oral microbial diseases. However, the results of clinical studies assessing the effects of bifidobacteria on the oral microbiota are controversial, and the mechanisms of actions of probiotics in the oral cavity remain largely unknown. In addition, very little is known about the role of commensal bifidobacteria in oral health. Our aim was to study the integration of the probiotic Bifidobacterium animalis subsp. lactis Bb12 and of oral Bifidobacterium dentium and Bifidobacterium longum isolates in supragingival and subgingival biofilm models and their effects on other bacteria in biofilms in vitro using two different in vitro biofilms and agar-overlay assays. All bifidobacteria integrated well into the subgingival biofilms composed of Porphyromonas gingivalis, Actinomyces naeslundii, and Fusobacterium nucleatum and decreased significantly only the number of P. gingivalis in the biofilms. The integration of bifidobacteria into the supragingival biofilms containing Streptococcus mutans and A. naeslundii was less efficient, and bifidobacteria did not affect the number of S. mutans in biofilms. Therefore, our results suggest that bifidobacteria may have a positive effect on subgingival biofilm and thereby potential in enhancing gingival health; however, their effect on supragingival biofilm may be limited.
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Affiliation(s)
- Heli Jäsberg
- Finnish Doctoral Program in Oral Sciences (FINDOS Turku), Faculty of Medicine, University of Turku, Turku, Finland.,Department of Cariology, Institute of Dentistry, Faculty of Medicine, University of Turku, Turku, Finland
| | - Eva Söderling
- Institute of Dentistry, Faculty of Medicine, University of Turku, Turku, Finland
| | - Akihito Endo
- Functional Foods Forum, Faculty of Medicine, University of Turku, Turku, Finland
| | | | - Anna Haukioja
- Institute of Dentistry, Faculty of Medicine, University of Turku, Turku, Finland
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15
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Characterization and in vitro properties of potential probiotic Bifidobacterium strains isolated from breast-fed infant feces. ANN MICROBIOL 2015. [DOI: 10.1007/s13213-015-1187-x] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
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16
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Li Y, Guo H, Wang X, Lu Y, Yang C, Yang P. Coinfection with Fusobacterium nucleatum can enhance the attachment and invasion of Porphyromonas gingivalis or Aggregatibacter actinomycetemcomitans to human gingival epithelial cells. Arch Oral Biol 2015; 60:1387-93. [PMID: 26143497 DOI: 10.1016/j.archoralbio.2015.06.017] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2014] [Revised: 03/13/2015] [Accepted: 06/15/2015] [Indexed: 10/23/2022]
Abstract
OBJECTIVE This study was conducted to investigate effects of coinfection of Porphyromonas gingivalis (P. gingivalis) or Aggregatibacter actinomycetemcomitans (A. actinomycetemcomitans) with Fusobacterium nucleatum (F. nucleatum) on their adhering and invasive capacity to human gingival epithelial cells as well as the expression of interleukin-8 (IL-8) and human beta-defensin-2 (hBD-2) in human gingival epithelial cells. DESIGN P. gingivalis and A. actinomycetemcomitans were tested for their ability to attach and invade a human gingival epithelial cell line (Ca9-22) alone or coinfecting with F. nucleatum. Also, expression levels of IL-8 and hBD-2 were detected respectively using enzyme linked immunosorbent assay (ELISA) and real-time reverse transcription PCR (RT-PCR) when Ca9-22 cells were infected with P. gingivalis and A. actinomycetemcomitans alone or coinfecting with F. nucleatum. RESULTS F. nucleatum, P. gingivalis and A. actinomycetemcomitans were allowed to adhere and invade Ca9-22 cells, either each strain alone or under coinfection. The adhering and invasive abilities of P. gingivalis and A. actinomycetemcomitans were significantly greater when they were coincubated with F. nucleatum (P<0.05) than either of them alone. These enhancements were inhibited by galactose. In addition, P. gingivalis and A. actinomycetemcomitans inhibited the activation of IL-8 and hBD-2 by F. nucleatum. Also, galactose disrupted this inhibition on the expression of IL-8 and hBD-2. CONCLUSION These results suggested coinfection with F. nucleatum can enhance adhesion and invasion of P. gingivalis and A. actinomycetemcomitans to Ca9-22 cells, as well as inhibition on host innate immune response.
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Affiliation(s)
- Yan Li
- School of Stomatology, Shandong University, Jinan, PR China; Shandong provincial key laboratory of oral tissue regeneration, Jinan, PR China
| | - Hongmei Guo
- School of Stomatology, Shandong University, Jinan, PR China; Shandong provincial key laboratory of oral tissue regeneration, Jinan, PR China
| | - Xijun Wang
- School of Stomatology, Shandong University, Jinan, PR China; Shandong provincial key laboratory of oral tissue regeneration, Jinan, PR China
| | | | | | - Pishan Yang
- School of Stomatology, Shandong University, Jinan, PR China; Shandong provincial key laboratory of oral tissue regeneration, Jinan, PR China.
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17
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Arzmi MH, Dashper S, Catmull D, Cirillo N, Reynolds EC, McCullough M. Coaggregation ofCandida albicans,Actinomyces naeslundiiandStreptococcus mutansisCandida albicansstrain dependent. FEMS Yeast Res 2015; 15:fov038. [DOI: 10.1093/femsyr/fov038] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/03/2015] [Indexed: 12/26/2022] Open
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18
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Karched M, Bhardwaj RG, Asikainen SE. Coaggregation and biofilm growth of Granulicatella spp. with Fusobacterium nucleatum and Aggregatibacter actinomycetemcomitans. BMC Microbiol 2015; 15:114. [PMID: 26025449 PMCID: PMC4448563 DOI: 10.1186/s12866-015-0439-z] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2015] [Accepted: 05/08/2015] [Indexed: 12/03/2022] Open
Abstract
BACKGROUND Members of fastidious Granulicatella and Aggregatibacter genera belong to normal oral flora bacteria that can cause serious infections, such as infective endocarditis. Aggregatibacter actinomycetemcomitans has long been implicated in aggressive periodontitis, whereas DNA-based methods only recently showed an association between Granulicatella spp. and dental diseases. As bacterial coaggregation is a key phenomenon in the development of oral and nonoral multispecies bacterial communities it would be of interest knowing coaggregation pattern of Granulicatella species with A. actinomycetemcomitans in comparison with the multipotent coaggregator Fusobacterium nucleatum. The aim was to investigate coaggregation and biofilm formation of Granulicatella elegans and Granulicatella adiacens with A. actinomycetemcomitans and F. nucleatum strains. RESULTS F. nucleatum exhibited significantly (p < 0.05) higher autoaggregation than all other test species, followed by A. actinomycetemcomitans SA269 and G. elegans. A. actinomycetemcomitans CU1060 and G. adiacens did not autoaggregate. G. elegans with F. nucleatum exhibited significantly (p < 0.05) higher coaggregation than most others, but failed to grow as biofilm together or separately. With F. nucleatum as partner, A. actinomycetemcomitans strains SA269, a rough-colony wild-type strain, and CU1060, a spontaneous smooth-colony laboratory variant, and G. adiacens were the next in coaggregation efficiency. These dual species combinations also were able to grow as biofilms. While both G. elegans and G. adiacens coaggregated with A. actinomycetemcomitans strain SA269, but not with CU1060, they grew as biofilms with both A. actinomycetemcomitans strains. CONCLUSIONS G. elegans failed to form biofilm with F. nucleatum despite the strongest coaggregation with it. The ability of Granulicatella spp. to coaggregate and/or form biofilms with F. nucleatum and A. actinomycetemcomitans strains suggests that Granulicatella spp. have the potential to integrate into dental plaque biofilms.
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Affiliation(s)
- Maribasappa Karched
- General Facility Oral Microbiology Laboratory, Department of Bioclinical Sciences, Faculty of Dentistry, Kuwait University, Kuwait, Kuwait.
| | - Radhika G Bhardwaj
- General Facility Oral Microbiology Laboratory, Department of Bioclinical Sciences, Faculty of Dentistry, Kuwait University, Kuwait, Kuwait.
| | - Sirkka E Asikainen
- General Facility Oral Microbiology Laboratory, Department of Bioclinical Sciences, Faculty of Dentistry, Kuwait University, Kuwait, Kuwait.
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19
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Sharma H, Kinoshita Y, Fujiu S, Nomura S, Sawada M, Ahmed S, Shibuya M, Shirai K, Takamatsu S, Watanabe T, Yamazaki H, Kamiyama R, Kobayashi T, Arai H, Suzuki M, Nemoto N, Ando K, Uchida H, Kitamura K, Takei O, Nishigaki K. Establishment of a reborn MMV-microarray technology: realization of microbiome analysis and other hitherto inaccessible technologies. BMC Biotechnol 2014; 14:78. [PMID: 25141858 PMCID: PMC4153446 DOI: 10.1186/1472-6750-14-78] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2013] [Accepted: 08/15/2014] [Indexed: 01/06/2023] Open
Abstract
BACKGROUND With the accelerating development of bioscience, the problem of research cost has become important. We previously devised and developed a novel concept microarray with manageable volumes (MMV) using a soft gel. It demonstrated the great potential of the MMV technology with the examples of 1024-parallel-cell culture and PCR experiments. However, its full potential failed to be expressed, owing to the nature of the material used for the MMV chip. RESULTS In the present study, by developing plastic-based MMVs and associated technologies, we introduced novel technologies such as C2D2P (in which the cells in each well are converted from DNA to protein in 1024-parallel), NGS-non-dependent microbiome analysis, and other powerful applications. CONCLUSIONS The reborn MMV-microarray technology has proven to be highly efficient and cost-effective (with approximately 100-fold cost reduction) and enables us to realize hitherto unattainable technologies.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | - Koichi Nishigaki
- Department of Functional Materials Science, Graduate School of Science and Engineering, Saitama University, 255 Shimo-okubo, Saitama 338-8570, Japan.
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20
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Abstract
Investigations of interbacterial adhesion in dental plaque development are currently limited by the lack of a convenient assay to screen the multitude of species present in oral biofilms. To overcome this limitation, we developed a solid-phase fluorescence-based screening method to detect and identify coadhesive partner organisms in mixed-species biofilms. The applicability of this method was demonstrated using coaggregating strains of type 2 fimbrial adhesin-bearing actinomyces and receptor polysaccharide (RPS)-bearing streptococci. Specific adhesin/receptor-mediated coadhesion was detected by overlaying bacterial strains immobilized to a nitrocellulose membrane with a suspended, fluorescein-labeled bacterial partner strain. Coadhesion was comparable regardless of which cell type was labeled and which was immobilized. Formaldehyde treatment of bacteria, either in suspension or immobilized on nitrocellulose, abolished actinomyces type 2 fimbrial adhesin but not streptococcal RPS function, thereby providing a simple method for assigning complementary adhesins and glycan receptors to members of a coadhering pair. The method's broader applicability was shown by overlaying colony lifts of dental plaque biofilm cultures with fluorescein-labeled strains of type 2 fimbriated Actinomyces naeslundii or RPS-bearing Streptococcus oralis. Prominent coadhesion partners included not only streptococci and actinomyces, as expected, but also other bacteria not identified in previous coaggregation studies, such as adhesin- or receptor-bearing strains of Neisseria pharyngitis, Rothia dentocariosa, and Kingella oralis. The ability to comprehensively screen complex microbial communities for coadhesion partners of specific microorganisms opens a new approach in studies of dental plaque and other mixed-species biofilms.
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21
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Africa CWJ, Nel J, Stemmet M. Anaerobes and bacterial vaginosis in pregnancy: virulence factors contributing to vaginal colonisation. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2014; 11:6979-7000. [PMID: 25014248 PMCID: PMC4113856 DOI: 10.3390/ijerph110706979] [Citation(s) in RCA: 66] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 05/15/2014] [Revised: 06/25/2014] [Accepted: 06/30/2014] [Indexed: 12/21/2022]
Abstract
The aetiology and pathogenesis of bacterial vaginosis (BV) is unclear but it appears to be associated with factors that disrupt the normal acidity of the vagina thus altering the equilibrium between the normal vaginal microbiota. BV has serious implications for female morbidity, including reports of pelvic inflammatory disease, adverse pregnancy outcomes, increased susceptibility to sexually transmitted infections and infertility. This paper reviewed new available information regarding possible factors contributing to the establishment of the BV vaginal biofilm, examined the proposed role of anaerobic microbial species recently detected by new culture-independent methods and discusses developments related to the effects of BV on human pregnancy. The literature search included Pubmed (NLM), LISTA (EBSCO), and Web of Science. Because of the complexity and diversity of population groups, diagnosis and methodology used, no meta-analysis was performed. Several anaerobic microbial species previously missed in the laboratory diagnosis of BV have been revealed while taking cognisance of newly proposed theories of infection, thereby improving our understanding and knowledge of the complex aetiology and pathogenesis of BV and its perceived role in adverse pregnancy outcomes.
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Affiliation(s)
- Charlene W J Africa
- Department of Medical Biosciences, University of the Western Cape, Private Bag X17, Bellville 7535, Cape Town, South Africa.
| | - Janske Nel
- Department of Medical Biosciences, University of the Western Cape, Private Bag X17, Bellville 7535, Cape Town, South Africa.
| | - Megan Stemmet
- Department of Medical Biosciences, University of the Western Cape, Private Bag X17, Bellville 7535, Cape Town, South Africa.
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22
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Schillinger C, Petrich A, Lux R, Riep B, Kikhney J, Friedmann A, Wolinsky LE, Göbel UB, Daims H, Moter A. Co-localized or randomly distributed? Pair cross correlation of in vivo grown subgingival biofilm bacteria quantified by digital image analysis. PLoS One 2012; 7:e37583. [PMID: 22655057 PMCID: PMC3360060 DOI: 10.1371/journal.pone.0037583] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2012] [Accepted: 04/22/2012] [Indexed: 11/18/2022] Open
Abstract
The polymicrobial nature of periodontal diseases is reflected by the diversity of phylotypes detected in subgingival plaque and the finding that consortia of suspected pathogens rather than single species are associated with disease development. A number of these microorganisms have been demonstrated in vitro to interact and enhance biofilm integration, survival or even pathogenic features. To examine the in vivo relevance of these proposed interactions, we extended the spatial arrangement analysis tool of the software daime (digital image analysis in microbial ecology). This modification enabled the quantitative analysis of microbial co-localization in images of subgingival biofilm species, where the biomass was confined to fractions of the whole-image area, a situation common for medical samples. Selected representatives of the disease-associated red and orange complexes that were previously suggested to interact with each other in vitro (Tannerella forsythia with Fusobacterium nucleatum and Porphyromonas gingivalis with Prevotella intermedia) were chosen for analysis and labeled with specific fluorescent probes via fluorescence in situ hybridization. Pair cross-correlation analysis of in vivo grown biofilms revealed tight clustering of F. nucleatum/periodonticum and T. forsythia at short distances (up to 6 µm) with a pronounced peak at 1.5 µm. While these results confirmed previous in vitro observations for F. nucleatum and T. forsythia, random spatial distribution was detected between P. gingivalis and P. intermedia in the in vivo samples. In conclusion, we successfully employed spatial arrangement analysis on the single cell level in clinically relevant medical samples and demonstrated the utility of this approach for the in vivo validation of in vitro observations by analyzing statistically relevant numbers of different patients. More importantly, the culture-independent nature of this approach enables similar quantitative analyses for “as-yet-uncultured” phylotypes which cannot be characterized in vitro.
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Affiliation(s)
- Claudia Schillinger
- Institut für Mikrobiologie und Hygiene, Charité – Universitätsmedizin Berlin, Berlin, Germany
| | - Annett Petrich
- Institut für Mikrobiologie und Hygiene, Charité – Universitätsmedizin Berlin, Berlin, Germany
| | - Renate Lux
- UCLA School of Dentistry, University of California Los Angeles, Los Angeles, California, United States of America
| | - Birgit Riep
- Abteilung für Parodontologie und Synoptische Zahnmedizin, Charité – Universitätsmedizin Berlin, Berlin, Germany
| | - Judith Kikhney
- Institut für Mikrobiologie und Hygiene, Charité – Universitätsmedizin Berlin, Berlin, Germany
| | - Anton Friedmann
- School of Dentistry, Faculty of Health, University of Witten, Witten, Germany
| | - Lawrence E. Wolinsky
- Texas A&M Health Science Center, Baylor College of Dentistry, Dallas, Texas, United States of America
| | - Ulf B. Göbel
- Institut für Mikrobiologie und Hygiene, Charité – Universitätsmedizin Berlin, Berlin, Germany
| | - Holger Daims
- Department of Microbial Ecology, Ecology Center, University of Vienna, Vienna, Austria
- * E-mail: (AM); (HD)
| | - Annette Moter
- Institut für Mikrobiologie und Hygiene, Charité – Universitätsmedizin Berlin, Berlin, Germany
- * E-mail: (AM); (HD)
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24
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Abstract
Biofilms are masses of microorganisms that bind to and multiply on a solid surface, typically with a fluid bathing the microbes. The microorganisms that are not attached but are free floating in an aqueous environment are termed planktonic cells. Traditionally, microbiology research has addressed results from planktonic bacterial cells. However, many recent studies have indicated that biofilms are the preferred form of growth of most microbes and particularly those of a pathogenic nature. Biofilms on animal hosts have significantly increased resistance to various antimicrobials compared to planktonic cells. These microbial communities form microcolonies that interact with each other using very sophisticated communication methods (i.e., quorum-sensing). The development of unique microbiological tools to detect and assess the various biofilms around us is a tremendously important focus of research in many laboratories. In the present review, we discuss the major biofilm mechanisms and the interactions among oral bacteria.
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Affiliation(s)
- Ruijie Huang
- Department of Oral Biology and Tobacco Cessation and Biobehavioral Center, School of Dentistry, Indiana University, Indianapolis, IN, USA
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25
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Systems-level analysis of microbial community organization through combinatorial labeling and spectral imaging. Proc Natl Acad Sci U S A 2011; 108:4152-7. [PMID: 21325608 DOI: 10.1073/pnas.1101134108] [Citation(s) in RCA: 208] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
Microbes in nature frequently function as members of complex multitaxon communities, but the structural organization of these communities at the micrometer level is poorly understood because of limitations in labeling and imaging technology. We report here a combinatorial labeling strategy coupled with spectral image acquisition and analysis that greatly expands the number of fluorescent signatures distinguishable in a single image. As an imaging proof of principle, we first demonstrated visualization of Escherichia coli labeled by fluorescence in situ hybridization (FISH) with 28 different binary combinations of eight fluorophores. As a biological proof of principle, we then applied this Combinatorial Labeling and Spectral Imaging FISH (CLASI-FISH) strategy using genus- and family-specific probes to visualize simultaneously and differentiate 15 different phylotypes in an artificial mixture of laboratory-grown microbes. We then illustrated the utility of our method for the structural analysis of a natural microbial community, namely, human dental plaque, a microbial biofilm. We demonstrate that 15 taxa in the plaque community can be imaged simultaneously and analyzed and that this community was dominated by early colonizers, including species of Streptococcus, Prevotella, Actinomyces, and Veillonella. Proximity analysis was used to determine the frequency of inter- and intrataxon cell-to-cell associations which revealed statistically significant intertaxon pairings. Cells of the genera Prevotella and Actinomyces showed the most interspecies associations, suggesting a central role for these genera in establishing and maintaining biofilm complexity. The results provide an initial systems-level structural analysis of biofilm organization.
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Abstract
Recent analyses with ribosomal RNA-based technologies have revealed the diversity of bacterial populations within dental biofilms, and have highlighted their important contributions to oral health and disease. Dental biofilms are exceedingly complex and multispecies ecosystems, where oral bacteria interact cooperatively or competitively with other members. Bacterial interactions that influence dental biofilm communities include various different mechanisms. During the early stage of biofilm formation, it is known that planktonic bacterial cells directly attach to surfaces of the oral cavity or indirectly bind to other bacterial cells that have already colonized. Adherence through co-aggregation may be critical for the temporary retention of bacteria on dental surfaces, and may facilitate eventual bacterial colonization. It is likely that metabolic communication, genetic exchange, production of inhibitory factors (e.g., bacteriocins, hydrogen peroxide, etc.), and quorum-sensing are pivotal regulatory factors that determine the bacterial composition and/or metabolism. Since each bacterium can easily access a neighboring bacterial cell and its metabolites, genetic exchanges and metabolic communication may occur frequently in dental biofilms. Quorum-sensing is defined as gene regulation in response to cell density, which influences various functions, e.g., virulence and bacteriocin production. In this review, we discuss these important interactions among oral bacteria within the dental biofilm communities.
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Affiliation(s)
- K Hojo
- Food Science Institute, Meiji Dairies Co., 540 Naruda, Odawara, Kanagawa 250-0862, Japan.
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Nagaoka S, Hojo K, Mori T, Kato D, Ohshima T, Maeda N. Potential Antagonistic Activity of Bifidobacterium adolescentis against Porphyromonas gingivalis in a Hamster Periodontitis Model. J Oral Biosci 2009. [DOI: 10.1016/s1349-0079(09)80008-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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28
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Predominant bacteria recovered from a periodontitis site in a hamster model raised by silk-ligature with Porphyromonas gingivalis infection. Biosci Biotechnol Biochem 2008; 72:1348-51. [PMID: 18460794 DOI: 10.1271/bbb.70653] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
We isolated oral bacteria that coexisted with Porphyromonas gingivalis in a hamster periodontitis model. As predominant bacteria in the periodontitis site, Collinsella-reltaed strains, Eubacterium-reltaed strains, Streptococcus suis-related strains, and Veillonella parvula-reltaed strains were detected. In addition, Actinomyces, Bacteroides, and P. gingivalis were also isolated predominantly. The results suggest that the bacterial composition of the periodontitis site in hamsters is complex, as in human periodontitis.
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