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Chrószcz M, Barszczewska-Rybarek I. Nanoparticles of Quaternary Ammonium Polyethylenimine Derivatives for Application in Dental Materials. Polymers (Basel) 2020; 12:E2551. [PMID: 33143324 PMCID: PMC7693368 DOI: 10.3390/polym12112551] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2020] [Revised: 10/22/2020] [Accepted: 10/28/2020] [Indexed: 12/12/2022] Open
Abstract
Various quaternary ammonium polyethylenimine (QA-PEI) derivatives have been synthesized in order to obtain nanoparticles. Due to their antibacterial activity and non-toxicity towards mammalian cells, the QA-PEI nanoparticles have been tested extensively regarding potential applications as biocidal additives in various dental composite materials. Their impact has been examined mostly for dimethacrylate-based restorative materials; however, dental cements, root canal pastes, and orthodontic adhesives have also been tested. Results of those studies showed that the addition of small quantities of QA-PEI nanoparticles, from 0.5 to 2 wt.%, led to efficient and long-lasting antibacterial effects. However, it was also discovered that the intensity of the biocidal activity strongly depended on several chemical factors, including the degree of crosslinking, length of alkyl telomeric chains, degree of N-alkylation, degree of N-methylation, counterion type, and pH. Importantly, the presence of QA-PEI nanoparticles in the studied dental composites did not negatively impact the degree of conversion in the composite matrix, nor its mechanical properties. In this review, we summarized these features and functions in order to present QA-PEI nanoparticles as modern and promising additives for dental materials that can impart unique antibacterial characteristics without deteriorating the products' structures or mechanical properties.
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Affiliation(s)
- Marta Chrószcz
- Department of Physical Chemistry and Technology of Polymers, Silesian University of Technology, 44-100 Gliwice, Poland;
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102
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Morales-Aparicio JC, Lara Vasquez P, Mishra S, Barrán-Berdón AL, Kamat M, Basso KB, Wen ZT, Brady LJ. The Impacts of Sortase A and the 4'-Phosphopantetheinyl Transferase Homolog Sfp on Streptococcus mutans Extracellular Membrane Vesicle Biogenesis. Front Microbiol 2020; 11:570219. [PMID: 33193163 PMCID: PMC7649765 DOI: 10.3389/fmicb.2020.570219] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2020] [Accepted: 09/17/2020] [Indexed: 12/12/2022] Open
Abstract
Extracellular membrane vesicles (EMVs) are produced by many Gram-positive organisms, but information regarding vesiculogenesis is incomplete. We used single gene deletions to evaluate the impacts on Streptococcus mutans EMV biogenesis of Sortase A (SrtA), which affects S. mutans EMV composition, and Sfp, a 4'-phosphopantetheinyl transferase that affects Bacillus subtilis EMV stability. ΔsrtA EMVs were notably larger than Δsfp and wild-type (WT) EMVs. EMV proteins identified from all three strains are known to be involved in cell wall biogenesis and cell architecture, bacterial adhesion, biofilm cell density and matrix development, and microbial competition. Notably, the AtlA autolysin was not processed to its mature active form in the ΔsrtA mutant. Proteomic and lipidomic analyses of all three strains revealed multiple dissimilarities between vesicular and corresponding cytoplasmic membranes (CMs). A higher proportion of EMV proteins are predicted substrates of the general secretion pathway (GSP). Accordingly, the GSP component SecA was identified as a prominent EMV-associated protein. In contrast, CMs contained more multi-pass transmembrane (TM) protein substrates of co-translational transport machineries than EMVs. EMVs from the WT, but not the mutant strains, were enriched in cardiolipin compared to CMs, and all EMVs were over-represented in polyketide flavonoids. EMVs and CMs were rich in long-chain saturated, monounsaturated, and polyunsaturated fatty acids, except for Δsfp EMVs that contained exclusively polyunsaturated fatty acids. Lipoproteins were less prevalent in EMVs of all three strains compared to their CMs. This study provides insight into biophysical characteristics of S. mutans EMVs and indicates discrete partitioning of protein and lipid components between EMVs and corresponding CMs of WT, ΔsrtA, and Δsfp strains.
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Affiliation(s)
| | | | - Surabhi Mishra
- Department of Oral Biology, University of Florida, Gainesville, FL, United States
| | - Ana L. Barrán-Berdón
- Department of Oral Biology, University of Florida, Gainesville, FL, United States
| | - Manasi Kamat
- Department of Chemistry, University of Florida, Gainesville, FL, United States
| | - Kari B. Basso
- Department of Chemistry, University of Florida, Gainesville, FL, United States
| | - Zezhang T. Wen
- Department of Oral and Craniofacial Biology, Louisiana State University Health Sciences Center New Orleans, New Orleans, LA, United States
- Department of Microbiology, Immunology, and Parasitology, Louisiana State University Health Sciences Center New Orleans, New Orleans, LA, United States
| | - L. Jeannine Brady
- Department of Oral Biology, University of Florida, Gainesville, FL, United States
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103
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Proteomic and metabolic characterization of membrane vesicles derived from Streptococcus mutans at different pH values. Appl Microbiol Biotechnol 2020; 104:9733-9748. [DOI: 10.1007/s00253-020-10563-6] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2019] [Revised: 03/12/2020] [Accepted: 03/20/2020] [Indexed: 12/14/2022]
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104
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Alves-Barroco C, Rivas-García L, Fernandes AR, Baptista PV. Tackling Multidrug Resistance in Streptococci - From Novel Biotherapeutic Strategies to Nanomedicines. Front Microbiol 2020; 11:579916. [PMID: 33123110 PMCID: PMC7573253 DOI: 10.3389/fmicb.2020.579916] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2020] [Accepted: 09/16/2020] [Indexed: 02/06/2023] Open
Abstract
The pyogenic streptococci group includes pathogenic species for humans and other animals and has been associated with enduring morbidity and high mortality. The main reason for the treatment failure of streptococcal infections is the increased resistance to antibiotics. In recent years, infectious diseases caused by pyogenic streptococci resistant to multiple antibiotics have been raising with a significant impact to public health and veterinary industry. The rise of antibiotic-resistant streptococci has been associated to diverse mechanisms, such as efflux pumps and modifications of the antimicrobial target. Among streptococci, antibiotic resistance emerges from previously sensitive populations as result of horizontal gene transfer or chromosomal point mutations due to excessive use of antimicrobials. Streptococci strains are also recognized as biofilm producers. The increased resistance of biofilms to antibiotics among streptococci promote persistent infection, which comprise circa 80% of microbial infections in humans. Therefore, to overcome drug resistance, new strategies, including new antibacterial and antibiofilm agents, have been studied. Interestingly, the use of systems based on nanoparticles have been applied to tackle infection and reduce the emergence of drug resistance. Herein, we present a synopsis of mechanisms associated to drug resistance in (pyogenic) streptococci and discuss some innovative strategies as alternative to conventional antibiotics, such as bacteriocins, bacteriophage, and phage lysins, and metal nanoparticles. We shall provide focused discussion on the advantages and limitations of agents considering application, efficacy and safety in the context of impact to the host and evolution of bacterial resistance.
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Affiliation(s)
- Cinthia Alves-Barroco
- UCIBIO, Departamento de Ciências da Vida, Faculdade de Ciências e Tecnologia, Universidade NOVA de Lisboa, Caparica, Portugal
| | - Lorenzo Rivas-García
- UCIBIO, Departamento de Ciências da Vida, Faculdade de Ciências e Tecnologia, Universidade NOVA de Lisboa, Caparica, Portugal.,Biomedical Research Centre, University of Granada, Granada, Spain
| | - Alexandra R Fernandes
- UCIBIO, Departamento de Ciências da Vida, Faculdade de Ciências e Tecnologia, Universidade NOVA de Lisboa, Caparica, Portugal
| | - Pedro Viana Baptista
- UCIBIO, Departamento de Ciências da Vida, Faculdade de Ciências e Tecnologia, Universidade NOVA de Lisboa, Caparica, Portugal
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105
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Kosolapova AO, Antonets KS, Belousov MV, Nizhnikov AA. Biological Functions of Prokaryotic Amyloids in Interspecies Interactions: Facts and Assumptions. Int J Mol Sci 2020; 21:E7240. [PMID: 33008049 PMCID: PMC7582709 DOI: 10.3390/ijms21197240] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2020] [Revised: 09/25/2020] [Accepted: 09/28/2020] [Indexed: 02/07/2023] Open
Abstract
Amyloids are fibrillar protein aggregates with an ordered spatial structure called "cross-β". While some amyloids are associated with development of approximately 50 incurable diseases of humans and animals, the others perform various crucial physiological functions. The greatest diversity of amyloids functions is identified within prokaryotic species where they, being the components of the biofilm matrix, function as adhesins, regulate the activity of toxins and virulence factors, and compose extracellular protein layers. Amyloid state is widely used by different pathogenic bacterial species in their interactions with eukaryotic organisms. These amyloids, being functional for bacteria that produce them, are associated with various bacterial infections in humans and animals. Thus, the repertoire of the disease-associated amyloids includes not only dozens of pathological amyloids of mammalian origin but also numerous microbial amyloids. Although the ability of symbiotic microorganisms to produce amyloids has recently been demonstrated, functional roles of prokaryotic amyloids in host-symbiont interactions as well as in the interspecies interactions within the prokaryotic communities remain poorly studied. Here, we summarize the current findings in the field of prokaryotic amyloids, classify different interspecies interactions where these amyloids are involved, and hypothesize about their real occurrence in nature as well as their roles in pathogenesis and symbiosis.
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Affiliation(s)
- Anastasiia O. Kosolapova
- Laboratory for Proteomics of Supra-Organismal Systems, All-Russia Research Institute for Agricultural Microbiology (ARRIAM), 196608 St. Petersburg, Russia (K.S.A.); (M.V.B.)
- Faculty of Biology, St. Petersburg State University (SPbSU), 199034 St. Petersburg, Russia
| | - Kirill S. Antonets
- Laboratory for Proteomics of Supra-Organismal Systems, All-Russia Research Institute for Agricultural Microbiology (ARRIAM), 196608 St. Petersburg, Russia (K.S.A.); (M.V.B.)
- Faculty of Biology, St. Petersburg State University (SPbSU), 199034 St. Petersburg, Russia
| | - Mikhail V. Belousov
- Laboratory for Proteomics of Supra-Organismal Systems, All-Russia Research Institute for Agricultural Microbiology (ARRIAM), 196608 St. Petersburg, Russia (K.S.A.); (M.V.B.)
- Faculty of Biology, St. Petersburg State University (SPbSU), 199034 St. Petersburg, Russia
| | - Anton A. Nizhnikov
- Laboratory for Proteomics of Supra-Organismal Systems, All-Russia Research Institute for Agricultural Microbiology (ARRIAM), 196608 St. Petersburg, Russia (K.S.A.); (M.V.B.)
- Faculty of Biology, St. Petersburg State University (SPbSU), 199034 St. Petersburg, Russia
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106
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Inhibitory Effect of Phenolic Acids in Rubus coreanus on Glucosyltransferase of Streptococcus mutans. Curr Microbiol 2020; 77:3695-3703. [DOI: 10.1007/s00284-020-02179-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2020] [Accepted: 08/25/2020] [Indexed: 01/21/2023]
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107
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Rocha FR, Regis WFM, Duarte S, Muniz FWMG, Rodrigues LKA. Effect of bioactive compounds on the regulation of quorum sensing network-associated genes and virulence in Streptococcus mutans-A systematic review. Arch Oral Biol 2020; 119:104893. [PMID: 32961379 DOI: 10.1016/j.archoralbio.2020.104893] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2020] [Revised: 08/23/2020] [Accepted: 08/25/2020] [Indexed: 12/15/2022]
Abstract
OBJECTIVE The aim of this study was to systematically review the literature on the effect of bioactive compounds and their regulation of quorum sensing (QS)-related and/or -regulated-virulence genes expression in Streptococcus mutans. DESIGN The search strategy was conducted through the electronic databases Pubmed, Scopus, and Web of Science for studies reporting the effects of natural and synthetic bioactive compounds on the regulation of QS-associated and/or -regulated genes of S. mutans. RESULTS After full-text reading, 19 studies met the inclusion criteria, in most of them, QS-inhibitors from synthetic origin were evaluated, 16 articles described the effect of the compounds on biofilm formation cultivated in vitro and five studies described these effects on adhesion of biofilm-producing cells. Only 2 studies analyzed the potential target-component of the QS. CONCLUSIONS Mostly, the bioactive compounds affected the expression of QS-associated and/or -regulated genes and virulence traits (e.g. adhesion, biofilm formation, acid stress tolerance) of S. mutans. Further studies are necessary to elucidate the target-specific QS-system constituent used by bioactive compounds to achieve QS inhibition as well as validate the use of these compounds in controlling dental caries.
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Affiliation(s)
- Francisco R Rocha
- Department of Pathology and Legal Medicine, Postgraduate Program in Medical Microbiology, Federal University of Ceará, Fortaleza, CE, Zip Code: 60430-270, Brazil
| | - Wanessa F M Regis
- Faculty of Pharmacy, Dentistry, and Nursing, Federal University of Ceará, Fortaleza, Ceará, Brazil
| | - Simone Duarte
- Department of Cariology, Operative Dentistry and Dental Public Health, Indiana University School of Dentistry, Indianapolis, IN, United States
| | - Francisco W M G Muniz
- Department of Periodontology, School of Dentistry, Federal University of Pelotas, Pelotas, RS, Brazil
| | - Lidiany K A Rodrigues
- Department of Operative Dentistry, Faculty of Pharmacy, Dentistry and Nursing, Federal University of Ceará, Fortaleza, CE, Zip Code: 60430-170, Brazil.
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108
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Saha S, Meenawat A, Sahu C, Srivastava V, Yadav S, Kumar V. Bacterial Identification and Monitoring Around Two-Piece Dental Implants by Matrix-Assisted Laser Desorption Ionization Time of Flight Mass Spectrometry (MALDI-TOF MS). J Lab Physicians 2020; 12:49-55. [PMID: 32792794 PMCID: PMC7419175 DOI: 10.1055/s-0040-1714934] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022] Open
Abstract
Context Early microbiological diagnosis and treatment of periodontal pathogens is important for successful retention of dental implants. Aims This study aimed to identify and monitor oral bacterial colonization after successful two-piece dental implants. Settings and Design In this study, 50 two-piece dental implant subjects were included and assessed clinically, radiographically, and microbiologically. Methods and Material All the parameters were recorded at various stages after prosthesis placement. In each stage, nonadherent (peri-implant sulcular fluid) and adherent (curetted inner threads) samples were collected. Semiquantitative anaerobic culture of the samples were done in Anoxomat system. Bacterial colonies were first identified by routine microbiological methods and then by matrix-assisted laser desorption ionization-time of flight mass spectrometry (MALDI-TOF MS) method. Statistical Analysis All the results were analyzed by appropriate statistical methods (Chi-square, one factor analysis of variance, etc.). Results All the bacterial isolates were identified in the MALDI-TOF MS system with no failure. After implant placement for the nonadherent samples, the frequency (%) of Fusobacterium nucleatum, Prevotella melaninogenica, and Propionibacterium acnes decreased whereas frequency (%) of Escherichia coli, Staphylococcus epidermidis, and Streptococcus mitis increased. For adherent samples, the frequency (%) of E. coli, Enterococcus faecalis, Porphyromonas gingivalis, P. melaninogenica , and Veillonella parvula decreased, whereas frequency (%) of S. mitis and Streptococcus mutans increased. The postimplant mean nonadherent and adherent bacterial load increased with time but not significantly over the periods ( p = 0.302 and 0.123, respectively). Conclusion Combination of basic (semiquantitative culture method) and advanced microbiological method (MALDI-TOF MS) can be useful for accurate detection and monitoring of potential pathogens around two-piece dental implants.
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Affiliation(s)
- Sonali Saha
- Department of Periodontology and Implantology, Sardar Patel Post Graduate Institute of Dental and Medical Sciences, Lucknow, India
| | - Ajita Meenawat
- Department of Periodontology and Implantology, Sardar Patel Post Graduate Institute of Dental and Medical Sciences, Lucknow, India
| | - Chinmoy Sahu
- Department of Microbiology, Sanjay Gandhi Post Graduate Institute of Medical Sciences, Lucknow, Uttar Pradesh, India
| | - Vivek Srivastava
- Department of Periodontology and Implantology, Sardar Patel Post Graduate Institute of Dental and Medical Sciences, Lucknow, India
| | - Shivam Yadav
- Department of Periodontology and Implantology, Sardar Patel Post Graduate Institute of Dental and Medical Sciences, Lucknow, India
| | - Vinod Kumar
- Department of Periodontology and Implantology, Sardar Patel Post Graduate Institute of Dental and Medical Sciences, Lucknow, India
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109
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Lauryl Gallate Activity and Streptococcus mutans: Its Effects on Biofilm Formation, Acidogenicity and Gene Expression. Molecules 2020; 25:molecules25163685. [PMID: 32823528 PMCID: PMC7465467 DOI: 10.3390/molecules25163685] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2020] [Revised: 08/08/2020] [Accepted: 08/12/2020] [Indexed: 11/27/2022] Open
Abstract
Streptococcus mutans bacterium is implicated in the pathogenesis of dental caries due to the production of biofilm and organic acids from dietary sucrose. Despite the availability of various means of prophylaxis, caries still has a high worldwide prevalence. Therefore, it is important to find new pharmaceuticals to inhibit S. mutans biofilm formation and acidogenicity. The aim of the current study was to evaluate the activity of lauryl gallate (dodecyl gallate) against S. mutans acidogenicity, the expression of biofilm-associated genes, and biofilm development on solid surfaces (polystyrene, glass). The biofilm quantities produced by S. mutans bacteria were assessed using colorimetric and optical profilometry techniques. Acidogenicity was evaluated by measuring the pH of the biofilm growth medium with microelectrode. Assessment of the expression of gene coding for glucan-binding protein B (gbpB), glucosyltranferases B, -C, -D (gtfB, -C, -D), and the F-ATPase β subunit of F1 protein (atpD) was carried out using a quantitative reverse transcription-polymerase chain reaction (RT-qPCR). The results demonstrate the capacity of lauryl gallate to significantly inhibit S. mutans acidogenicity and biofilm development on solid surfaces, in a dose-dependent manner, compared to untreated bacteria (p < 0.05). The highest activity of lauryl gallate occurred at a concentration of 98.98 µM, at which it suppressed biofilm formation by 100% and lowered pH levels by 98%. The effect of lauryl gallate treatment on gene expression changes, as demonstrated by our RT-qPCR data, was limited to the gtfD gene only, was a significant (48%) decrease in gene expression, obtained for the biofilm-producing bacteria, while a 300% increase in fold change for the same gene occurred in the planktonic cells. It is important to note that in previous studies we showed a broader effect of related derivatives. However, a similar magnitude of difference in effects between biofilm and planktonic cells for the atpD gene was obtained after treatment with octyl gallate and reverse magnitude for the same gene after treatment with ethyl gallate. Therefore, to ascertain the possible direct or indirect effects of lauryl gallate, as well as octyl gallate and ethyl gallate, more research is needed to examine the effects on the amount of enzymes and on the enzymatic activity of the products of the affected genes that are involved in the production and maintenance of biofilm by S. mutans.
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110
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Che RX, Xing XX, Liu X, Qu QW, Chen M, Yu F, Ma JX, Chen XR, Zhou YH, God'Spower BO, Liu JW, Lu ZX, Xu YP, Li YH. Analysis of multidrug resistance in Streptococcus suis ATCC 700794 under tylosin stress. Virulence 2020; 10:58-67. [PMID: 31874073 PMCID: PMC6363075 DOI: 10.1080/21505594.2018.1557505] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023] Open
Abstract
Streptococcus suis is an important zoonotic pathogen. The massive use of tylosin and other antibiotics in swine production has led to the emergence of resistant phenotypes of S. suis. However, there are no adequate measures available to address the problem of bacterial resistance. This study involved the use of 1/4 MIC (0.125 µg/mL) of tylosin to investigate resistance-related proteins by S. suis ATCC 700794. Our results showed that 171 proteins were differentially expressed in S. suis tested with 1/4 MIC (0.125 µg/mL) of tylosin using iTRAQ-based quantitative proteomic methods. TCS, heat shock protein and elongation factors were differentially expressed at 1/4 MIC (0.125 µg/mL) of tylosin compared to non treated, control cells. Using quantitative RT-PCR analysis, we verified the relationship between the differentially expressed proteins in S. suis with different MIC values. The data showed that expression profile for elongation factor G (fusA), elongation factor Ts (tsf), elongation factor Tu (tuf), putative histidine kinase of the competence regulon, ComD (comD), putative competence-damage inducible protein (cinA) and protein GrpE (grpE), observed in tylosin-resistant S. suis, correlated with that of S. suis ATCC 700794 at 1/4 MIC (0.125 µg/mL). The MIC of tylosin-resistant showed high-level resistance in terramycin, chlortetracycline, ofloxacin and enrofloxacin. Our findings demonstrated the importance of elongation factors, TCS and heat shock protein during development of tylosin resistance in S. suis. Thus, our study will provide insight into new drug targets and help reduce bacterial multidrug resistance through development of corresponding inhibitors.
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Affiliation(s)
- Rui-Xiang Che
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, Heilongjiang, P.R. China.,Heilongjiang Key Laboratory for Animal Disease Control and Pharmaceutical Development, Northeast Agricultural University, Harbin, Heilongjiang, China
| | - Xiao-Xu Xing
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, Heilongjiang, P.R. China.,Heilongjiang Key Laboratory for Animal Disease Control and Pharmaceutical Development, Northeast Agricultural University, Harbin, Heilongjiang, China
| | - Xin Liu
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, Heilongjiang, P.R. China.,Heilongjiang Key Laboratory for Animal Disease Control and Pharmaceutical Development, Northeast Agricultural University, Harbin, Heilongjiang, China
| | - Qian-Wei Qu
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, Heilongjiang, P.R. China.,Heilongjiang Key Laboratory for Animal Disease Control and Pharmaceutical Development, Northeast Agricultural University, Harbin, Heilongjiang, China
| | - Mo Chen
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, Heilongjiang, P.R. China.,Heilongjiang Key Laboratory for Animal Disease Control and Pharmaceutical Development, Northeast Agricultural University, Harbin, Heilongjiang, China
| | - Fei Yu
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, Heilongjiang, P.R. China.,Heilongjiang Key Laboratory for Animal Disease Control and Pharmaceutical Development, Northeast Agricultural University, Harbin, Heilongjiang, China
| | - Jin-Xin Ma
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, Heilongjiang, P.R. China.,Heilongjiang Key Laboratory for Animal Disease Control and Pharmaceutical Development, Northeast Agricultural University, Harbin, Heilongjiang, China
| | - Xing-Ru Chen
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, Heilongjiang, P.R. China.,Heilongjiang Key Laboratory for Animal Disease Control and Pharmaceutical Development, Northeast Agricultural University, Harbin, Heilongjiang, China
| | - Yong-Hui Zhou
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, Heilongjiang, P.R. China.,Heilongjiang Key Laboratory for Animal Disease Control and Pharmaceutical Development, Northeast Agricultural University, Harbin, Heilongjiang, China
| | - Bello-Onaghise God'Spower
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, Heilongjiang, P.R. China.,Heilongjiang Key Laboratory for Animal Disease Control and Pharmaceutical Development, Northeast Agricultural University, Harbin, Heilongjiang, China
| | - Ji-Wen Liu
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, Heilongjiang, P.R. China.,Heilongjiang Key Laboratory for Animal Disease Control and Pharmaceutical Development, Northeast Agricultural University, Harbin, Heilongjiang, China
| | - Zhao-Xiang Lu
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, Heilongjiang, P.R. China.,Heilongjiang Key Laboratory for Animal Disease Control and Pharmaceutical Development, Northeast Agricultural University, Harbin, Heilongjiang, China
| | - Ya-Ping Xu
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, Heilongjiang, P.R. China.,Heilongjiang Key Laboratory for Animal Disease Control and Pharmaceutical Development, Northeast Agricultural University, Harbin, Heilongjiang, China
| | - Yan-Hua Li
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, Heilongjiang, P.R. China.,Heilongjiang Key Laboratory for Animal Disease Control and Pharmaceutical Development, Northeast Agricultural University, Harbin, Heilongjiang, China
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111
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Eydou Z, Jad BN, Elsayed Z, Ismail A, Magaogao M, Hossain A. Investigation on the effect of vitamin C on growth & biofilm-forming potential of Streptococcus mutans isolated from patients with dental caries. BMC Microbiol 2020; 20:231. [PMID: 32731889 PMCID: PMC7393720 DOI: 10.1186/s12866-020-01914-4] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2020] [Accepted: 07/19/2020] [Indexed: 12/18/2022] Open
Abstract
BACKGROUND Streptococcus mutans is a major cause of dental caries. Its capacity to produce biofilm is fundamental in the pathogenesis of this ubiquitous condition. As maintaining a healthy dentition is a genuine goal given the contemporary advance in caries control, researchers are striving to achieve a breakthrough in caries therapy. We are taking the anti-cariogenic properties of vitamin C a step-further, considering the well-known evidence of the inversely proportionate relationship between salivary levels of vitamin C and dental caries. The aim of this study was to determine MIC, MBC, biofilm prevention concentration (BPC), and derivative measures of vitamin C against fresh clinical isolates of S. mutans to evaluate its efficacy as an anti-cariogenic agent. RESULTS Based on the data of four independent experiments done in quadruplicates, we found a concentration-dependent inhibitory effect of vitamin C on all S. mutans strains tested. The average MBC, MIC, and BPC of vitamin C were found to be 10.16, 9.38, and 5.61 mg/ml, respectively. Spectrophotometric quantitation of crystal violet showed diminished biofilm formation in the presence of vitamin C (p < 0.05). When compared with gentamicin, vitamin C produced a zone of inhibition that was three times as large against the clinical isolates. CONCLUSION Our results show that vitamin C has a negative effect on S. mutans growth and biofilm formation. Being the first to meticulously utilize BPC to explore a well-known effect of vitamin C, this report aims to help in the instigation of trials of higher evidence that will ultimately culminate in repurposing vitamin C as a novel anti-cariogenic agent, albeit further studies are required to provide auxiliary evidence in this context.
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Affiliation(s)
- Zehdi Eydou
- RAK College of Medical Sciences, RAK Medical and Health Sciences University, 11172, Ras Al Khaimah, UAE.
| | - Bader Naser Jad
- RAK College of Medical Sciences, RAK Medical and Health Sciences University, 11172, Ras Al Khaimah, UAE
| | - Zeyad Elsayed
- RAK College of Medical Sciences, RAK Medical and Health Sciences University, 11172, Ras Al Khaimah, UAE
| | - Anas Ismail
- RAK College of Medical Sciences, RAK Medical and Health Sciences University, 11172, Ras Al Khaimah, UAE
| | - Michael Magaogao
- Department of Medical Microbiology and Immunology, RAK Medical and Health Sciences University, 11172, Ras Al Khaimah, UAE
| | - Ashfaque Hossain
- Department of Medical Microbiology and Immunology, RAK Medical and Health Sciences University, 11172, Ras Al Khaimah, UAE
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112
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Shanmugam K, Sarveswari HB, Udayashankar A, Swamy SS, Pudipeddi A, Shanmugam T, Solomon AP, Neelakantan P. Guardian genes ensuring subsistence of oral Streptococcus mutans. Crit Rev Microbiol 2020; 46:475-491. [PMID: 32720594 DOI: 10.1080/1040841x.2020.1796579] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Despite the substantial research advancements on oral diseases, dental caries remains a major healthcare burden. A disease of microbial dysbiosis, dental caries is characterised by the formation of biofilms that assist demineralisation and destruction of the dental hard tissues. While it is well understood that this is a multi-kingdom biofilm-mediated disease, it has been elucidated that acid producing and acid tolerant bacteria play pioneering roles in the process. Specifically, Streptococcus mutans houses major virulence pathways that enable it to thrive in the oral cavity and cause caries. This pathogen adheres to the tooth substrate, forms biofilms, resists external stress, produces acids, kills closely related species, and survives the acid as well as the host clearance mechanisms. For an organism to be able to confer such virulence, it requires a large and complex gene network which synergise to establish disease. In this review, we have charted how these multi-faceted genes control several caries-related functions of Streptococcus mutans. In a futuristic thinking approach, we also briefly discuss the potential roles of omics and machine learning, to ease the study of non-functional genes that may play a major role and enable the integration of experimental data.
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Affiliation(s)
- Karthi Shanmugam
- Quorum Sensing Laboratory, Centre for Research in Infectious Diseases (CRID), School of Chemical and Biotechnology, SASTRA Deemed to be University, Thanjavur, India
| | - Hema Bhagavathi Sarveswari
- Quorum Sensing Laboratory, Centre for Research in Infectious Diseases (CRID), School of Chemical and Biotechnology, SASTRA Deemed to be University, Thanjavur, India
| | - Akshaya Udayashankar
- Quorum Sensing Laboratory, Centre for Research in Infectious Diseases (CRID), School of Chemical and Biotechnology, SASTRA Deemed to be University, Thanjavur, India
| | - Shogan Sugumar Swamy
- Quorum Sensing Laboratory, Centre for Research in Infectious Diseases (CRID), School of Chemical and Biotechnology, SASTRA Deemed to be University, Thanjavur, India
| | - Akhila Pudipeddi
- Quorum Sensing Laboratory, Centre for Research in Infectious Diseases (CRID), School of Chemical and Biotechnology, SASTRA Deemed to be University, Thanjavur, India
| | - Tamilarasi Shanmugam
- Quorum Sensing Laboratory, Centre for Research in Infectious Diseases (CRID), School of Chemical and Biotechnology, SASTRA Deemed to be University, Thanjavur, India
| | - Adline Princy Solomon
- Quorum Sensing Laboratory, Centre for Research in Infectious Diseases (CRID), School of Chemical and Biotechnology, SASTRA Deemed to be University, Thanjavur, India
| | - Prasanna Neelakantan
- Division of Restorative Dental Sciences, Faculty of Dentistry, The University of Hong Kong, Hong Kong, Hong Kong
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Exploring antibiofilm potential of bacitracin against streptococcus mutans. Microb Pathog 2020; 149:104279. [PMID: 32512154 DOI: 10.1016/j.micpath.2020.104279] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2019] [Revised: 03/19/2020] [Accepted: 05/25/2020] [Indexed: 11/21/2022]
Abstract
Bacitracin has well familiar effects on growth and colonization of bacteria but its antibiofilm action on majority of bacteria is still not studied. Bacitracin is a bactericidal antibiotic that primarily acts on Gram positive bacteria by obstructing the process of cell wall synthesis. In this study, we have investigated antibiofilm potential and the mechanism of bacitracin against a cariogenic bacteria 'Streptococcus mutans' which has not been reported so far. Bacitracin has been found to affect propensity of S. mutans to form biofilm. On treatment with sub-MIC concentration of bacitracin resulted in significant reduction in bifilm formation as evaluated by crystal violet and congo red assays. The architecture of S. mutans biofilm was observed by scanning electron microscopy which revealed astonishing phenotype of biofilm. Deficient biofilm was found to be composed of abnormally elongated cells. Transmission electron microscopy showed multiple septa formation in each cell of biofilm thereby indicating, cell division defect as the most probable cause of cell elongation. To elucidate the effect of bacitracin on molecular level, expression profiling of genes critically important for cell division and biofilm formation was performed, which were found many folds downregulated. Bacitracin at very low concentration has been found to have potent antibiofilm activity, therefore is a potential antibiofilm agent to treat oral biofilms. It is being anticipated, this study will offer novel information to identify potential targets and effectively creates true innovation to understand the biofilm's basic biology. Besides, discovering new uses for currently marketed drugs makes commercial as well as research sense.
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114
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Gieroba B, Krysa M, Wojtowicz K, Wiater A, Pleszczyńska M, Tomczyk M, Sroka-Bartnicka A. The FT-IR and Raman Spectroscopies as Tools for Biofilm Characterization Created by Cariogenic Streptococci. Int J Mol Sci 2020; 21:E3811. [PMID: 32471277 PMCID: PMC7313032 DOI: 10.3390/ijms21113811] [Citation(s) in RCA: 46] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2020] [Revised: 05/21/2020] [Accepted: 05/25/2020] [Indexed: 12/18/2022] Open
Abstract
Fourier transform infrared (FT-IR) and Raman spectroscopy and mapping were applied to the analysis of biofilms produced by bacteria of the genus Streptococcus. Bacterial biofilm, also called dental plaque, is the main cause of periodontal disease and tooth decay. It consists of a complex microbial community embedded in an extracellular matrix composed of highly hydrated extracellular polymeric substances and is a combination of salivary and bacterial proteins, lipids, polysaccharides, nucleic acids, and inorganic ions. This study confirms the value of Raman and FT-IR spectroscopies in biology, medicine, and pharmacy as effective tools for bacterial product characterization.
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Affiliation(s)
- Barbara Gieroba
- Department of Biopharmacy, Medical University of Lublin, Chodzki 4a, 20-093 Lublin, Poland; (B.G.); (M.K.); (K.W.)
| | - Mikolaj Krysa
- Department of Biopharmacy, Medical University of Lublin, Chodzki 4a, 20-093 Lublin, Poland; (B.G.); (M.K.); (K.W.)
| | - Kinga Wojtowicz
- Department of Biopharmacy, Medical University of Lublin, Chodzki 4a, 20-093 Lublin, Poland; (B.G.); (M.K.); (K.W.)
| | - Adrian Wiater
- Department of Industrial and Environmental Microbiology, Institute of Biological Sciences, Maria Curie-Skłodowska University, Akademicka 19, 20-033 Lublin, Poland; (A.W.); (M.P.)
| | - Małgorzata Pleszczyńska
- Department of Industrial and Environmental Microbiology, Institute of Biological Sciences, Maria Curie-Skłodowska University, Akademicka 19, 20-033 Lublin, Poland; (A.W.); (M.P.)
| | - Michał Tomczyk
- Department of Pharmacognosy, Faculty of Pharmacy, Medical University of Białystok, ul. Mickiewicza 2a, 15-230 Białystok, Poland;
| | - Anna Sroka-Bartnicka
- Department of Biopharmacy, Medical University of Lublin, Chodzki 4a, 20-093 Lublin, Poland; (B.G.); (M.K.); (K.W.)
- Department of Genetics and Microbiology, Maria Curie-Skłodowska University, Akademicka 19, 20-033 Lublin, Poland
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115
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Godavarthy D, Naik R, Gali PK, Ahmed Mujib BR, Baddam VRR. Can coffee combat caries? An in vitro study. J Oral Maxillofac Pathol 2020; 24:64-67. [PMID: 32508450 PMCID: PMC7269317 DOI: 10.4103/jomfp.jomfp_172_19] [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: 05/28/2019] [Revised: 09/07/2019] [Accepted: 09/24/2019] [Indexed: 11/05/2022] Open
Abstract
Background: Dental caries is a multifactorial disease caused by oral microflora, diet and oral environment. Oral microflora is crucial in initiation and progression of caries. An important strategy in the prevention of dental caries is to inhibit Streptococcus mutans, a caries causing bacteria. Use of natural products in the disease prevention has been increasing recently. One among such products is coffee which has anticariogenic properties against S. mutans. The aim of the present study is to evaluate the anticariogenic efficacy of coffee against S. mutans. Materials and Methods: The study is carried out using saliva samples collected from 120 healthy individuals of 18–25 years' age group divided into two groups (carious and noncarious). S. mutans is isolated from the saliva samples, cultured on mitis salivarius–bacitracin agar plates and used for checking the inhibitory activity of coffee in different formulations on these bacteria. Results: Our study results showed that coffee, when used alone, has highest antibacterial activity against S. mutans and its anticaries activity reduces when it is mixed with milk and sugar (P < 0.01). Conclusion: Our study proved that coffee has anticariogenic activity against S. mutans.
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Affiliation(s)
- Divyasri Godavarthy
- Department of Oral Pathology, Sibar Institute of Dental Sciences, Guntur, Andhra Pradesh, India
| | - Rashmi Naik
- Department of Oral Pathology, Bapuji Dental College and Hospital, Davangere, Karnataka, India
| | - Praveen Kumar Gali
- Department of Conservative and Endodontics, Sibar Institute of Dental Sciences, Guntur, Andhra Pradesh, India
| | - B R Ahmed Mujib
- Department of Oral Pathology, Bapuji Dental College and Hospital, Davangere, Karnataka, India
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116
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Widhianingsih D, Koontongkaew S. Enhancement of cariogenic virulence properties of dental plaque in asthmatics. J Asthma 2020; 58:1051-1057. [PMID: 32249711 DOI: 10.1080/02770903.2020.1753211] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
OBJECTIVE The aim of this study was to investigate the caries risk of asthmatics in relation to acidogenicity and the expression of caries-related genes in dental plaque. METHODS A case-control study composed of 38 asthmatics (cases) and 22 controls with an age range from 6 to 60 years. Characteristics of asthma, use of medications, oral hygiene practices and dietary habits assessed by questionnaires and interviews. The dental plaque maturity evaluated using GC Tri Plaque ID Gel TM. The expression of brpA, gtfB, gbpB, ldh, luxS and spaP genes analyzed using real-time PCR. RESULTS Asthmatics had a higher percentage of mature and acidogenic plaque than immature plaque. In contrast, immature plaque was more evident in controls. Acidogenic plaque commonly occurred in patients using 1 or a combination of two medications. High frequency in meals and sweets were found in asthmatics. Real-time PCR revealed that the expression of spaP, gtfB, gbpB, ldh, brpA and luxS were enhanced in asthmatics compared with the control group. CONCLUSION An increase in acidogenic and mature plaque is found in asthmatics. The expression of spaP, gtfB, gbpB, ldh, brpA and luxS in dental plaque are upregulated in asthmatics.
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Affiliation(s)
- Dhyani Widhianingsih
- Department of Oral Biology, Faculty of Dentistry, Thammasat University (Rangsit Campus), Pathum Thani, Thailand.,Department of Pediatric Dentistry, Faculty of Dentistry, Trisakti University, Jakarta, Indonesia
| | - Sittichai Koontongkaew
- Department of Oral Biology, Faculty of Dentistry, Thammasat University (Rangsit Campus), Pathum Thani, Thailand.,International College of Dentistry, Walailak University, Bangkok, Thailand
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117
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Sahin F, Oznurhan F. Antibacterial efficacy and remineralization capacity of glycyrrhizic acid added casein phosphopeptide-amorphous calcium phosphate. Microsc Res Tech 2020; 83:744-754. [PMID: 32191375 DOI: 10.1002/jemt.23465] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2020] [Revised: 02/07/2020] [Accepted: 02/11/2020] [Indexed: 12/16/2022]
Abstract
The aim was to evaluate remineralization capacity and antibacterial efficiency of Tooth Mousse and various amounts of glycyrrhizic acid added Tooth Mousse on primary tooth enamel. Three groups were formed; Group 1 (CPP-ACP), Group 2 (CPP-ACP + 5% glycyrrhizic acid), and Group 3 (CPP-ACP + 10% glycyrrhizic acid) in order to evaluate remineralization capacity. Enamel samples were immersed in demineralization solution and then remineralization agents were applied. Surface microhardness and SEM analyses were performed at the beginning, after demineralization and remineralization. For antibacterial tests, four groups were formed; Group 1, Group 2 and Group 3 and Group 4 (control). Biofilms were then exposed to 10% sucrose eight times per day for 7 days. After biofilm growth period, samples were treated with materials to evaluate antibacterial efficiency except control group. After application of materials, samples were incubated 2 more days at 37°C and at the end of this period, absorbance values of biofilms were determined and data were analyzed. An increase in microhardness values was Group 2 > Group 3 > Group 1, respectively, but there were no significant differences. After remineralization, microhardness values showed significant increases when compared to demineralized groups, but there was no significant difference. All groups showed decreased absorbance value of biofilm when compared with control group but they were insignificant. It was observed that both in Group 2 and Group 3, glycyrrhizic acid did not have a negative effect on remineralization and although they have an increase, it was insignificant. Although glycyrrhizic acid added CPP-ACP groups showed increased antibacterial activity, they were not statistically significant.
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Affiliation(s)
- Feride Sahin
- Department of Pediatric Dentistry, Faculty of Dentistry, Sivas Cumhuriyet University, Sivas, Turkey
| | - Fatih Oznurhan
- Department of Pediatric Dentistry, Faculty of Dentistry, Sivas Cumhuriyet University, Sivas, Turkey
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118
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Fujiki M, Honda M. The investigation of synergistic activity of protamine with conventional antimicrobial agents against oral bacteria. Biochem Biophys Res Commun 2020; 523:561-566. [PMID: 31932035 DOI: 10.1016/j.bbrc.2020.01.002] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2019] [Accepted: 01/02/2020] [Indexed: 11/18/2022]
Abstract
In this study, we applied protamine, which is an antimicrobial peptide, to oral healthcare in combination with conventional antimicrobial agents. First, we explored the antimicrobial activity of protamine, with or without other antimicrobial agents, against Streptococcus mutans (S. mutans). Co-treatment with protamine and 3-methyl-4-isopropylphenol (IPMP) decreased the viability of S. mutans synergistically within 10 min. Interestingly, sodium fluoride (NaF) did not exhibit synergistic activity with protamine. Next, S. mutans and Streptococcus gordonii (S. gordonii) were co-treated with protamine and IPMP for 5 min to simulate tooth brushing. As a result, this co-treatment killed S. mutans faster than S. gordonii. Therefore, co-treatment with protamine and IPMP could be incorporated into oral healthcare products to prevent dental caries.
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Affiliation(s)
- Masashi Fujiki
- Department of Applied Chemistry, School of Science and Technology, Meiji University, 1-1-1 Higashimita, Tama-ku, Kawasaki, Kanagawa, 214-8571, Japan
| | - Michiyo Honda
- Department of Applied Chemistry, School of Science and Technology, Meiji University, 1-1-1 Higashimita, Tama-ku, Kawasaki, Kanagawa, 214-8571, Japan.
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119
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Adhesion, anti-adhesion and aggregation properties relating to surface charges of selected Lactobacillus strains: study in Caco-2 and H357 cells. Arch Microbiol 2020; 202:1349-1357. [PMID: 32152646 DOI: 10.1007/s00203-020-01846-7] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2019] [Revised: 02/12/2020] [Accepted: 02/25/2020] [Indexed: 12/11/2022]
Abstract
This study aimed to assess adhesion and anti-adhesion, aggregation, and surface properties of four selected oral Lactobacillus strains, L. fermentum SD7, L. paracasei SD1, L. rhamnosus SD4, and L. rhamnosus SD11, together with Lactobacillus rhamnosus GG. Human cells, enterocytes Caco-2 and oral keratinocyte H357 were used, and various enteric and oral pathogens were included. Results showed that all Lactobacillus tested gave high adhesion and internalization in both Caco-2 and H357 cells similar to L. rhamnosus GG, and it suggests that such properties are strain dependent and specific to host cells. Anti-adhesion was different; it depended on the internalization ability of individual Lactobacillus and pathogenic strains to Caco-2 and H357. Coaggregation ability depended on autoaggregation of both the Lactobacillus and pathogenic strains. A positive correlation between surface charges and aggregation, and internalization and anti-adhesion of all Lactobacillus was found. In conclusion, results suggests that the selected Lactobacillus might be potential probiotics for usage in both the oral cavity and intestinal tract due to their abilities of aggregation, adherence and anti-internalization to both Caco-2 and H357 cells.
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120
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Al-Mahmood S, Al-Kaisy AZ, Mahmood MA, Aldhaher ZA, Sabri A. The Prevalence of Streptococcus Mutans with Different ABO Blood Groups Among Healthy College Students. Open Dent J 2020. [DOI: 10.2174/1874210602014010045] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Objective:This study was conducted to determine the correlation between the occurrence ofStreptococcus mutans(S. mutans) which is considered as the main pathogen responsible for the initiation and development of dental caries with blood groups and Rhesus (Rh) factor that are considered as a genetic predictor of having dental caries among healthy students.Methods:Saliva and blood samples were taken from 40 healthy students whose ages were between 19-23 years old in the College of Dentistry/Al-Iraqia University in Baghdad, Iraq. Estimation of the flow rate and pH was done for all the collected saliva samples within 5 min of saliva collection. Then, 100 µL of saliva was cultured on Mitis salivarius bacitracin agar (MSBA) at 37 °C for 48 h. The colonies ofS. mutanswere identified by their morphology and biochemical tests. Later, 1 to 2 drops of blood were taken from each student’s thumb to determine the blood group.Results:This study showed there was a greater prevalence ofS. mutansamong students of blood group A in contrast to the blood group O. In addition, Rh+ groups were dominant than Rh- groups among the study samples.Conclusion:S. mutanslevels were higher in the blood group A followed by AB, B, O blood groups among the college students studied.
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121
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Nuraini P, Pradopo S, Pronorahardjo AS. Sucrose and Xylitol-Induced Streptococcus mutans Biofilm Adherence. PESQUISA BRASILEIRA EM ODONTOPEDIATRIA E CLÍNICA INTEGRADA 2020. [DOI: 10.1590/pboci.2020.035] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
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122
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Potential of Novel Bacterial Cellulose Dressings Chemisorbed with Antiseptics for the Treatment of Oral Biofilm Infections. APPLIED SCIENCES-BASEL 2019. [DOI: 10.3390/app9245321] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Infections of the oral cavity are caused by multicellular communities of microbes, referred to as biofilms. Due to the high tolerance of biofilms to antibiotics and specific conditions within the oral cavity, there is an ongoing search for carriers that are able to deliver high local concentrations of potent antimicrobials that can eradicate pathogenic biofilms. Bacterial cellulose, owing to its high flexibility, absorbance, and release potential, meets these demands. In this work we chemisorbed bacterial cellulose with antiseptics containing povidone-iodine or polihexanide and analyzed their ability to eradicate in vitro biofilms formed by oral pathogens, such as Aggregatibacter actinomycetemcomitans, Enterococcus faecalis, Candida albicans, Streptococcus mutans, Staphylococcus aureus, and Pseudomonas aeruginosa. In tests performed by means of standard laboratory methods and with a long contact time (24 h), all antiseptics released from the cellulose dressings displayed a very high antibiofilm efficacy. On the other hand, when conditions imitating the oral cavity were used and cellulose dressings were applied for a 0.5–1 h contact time, the antiseptics released from the dressings displayed lower, though still acceptable, activity. Our findings indicate that besides species-specific resistance to particular antiseptic agents, environmental and experimental settings play an essential role in outcomes. Finally, in a proof-of-concept experiment performed in an oral cavity typodont model, we demonstrated the high flexibility and adhesiveness of antiseptic-containing cellulose dressings. Our novel findings, if developed in further studies, may lead to the introduction of new types of dressings that are able to efficiently deal with biofilm infections of the oral cavity.
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123
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Sujitha S, Vishnu US, Karthikeyan R, Sankarasubramanian J, Gunasekaran P, Rajendhran J. Genome Investigation of a Cariogenic Pathogen with Implications in Cardiovascular Diseases. Indian J Microbiol 2019; 59:451-459. [PMID: 31762508 DOI: 10.1007/s12088-019-00823-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2019] [Accepted: 08/30/2019] [Indexed: 11/24/2022] Open
Abstract
The proportion of people suffering from cardiovascular diseases has risen by 34% in the last 15 years in India. Cardiomyopathy is among the many forms of CVD s present. Infection of heart muscles is the suspected etiological agent for the same. Oral pathogens gaining entry into the bloodstream are responsible for such infections. Streptococcus mutans is an oral pathogen with implications in cardiovascular diseases. Previous studies have shown certain strains of S. mutans are found predominantly within atherosclerotic plaques and extirpated valves. To decipher the genetic differences responsible for endothelial cell invasion, we have sequenced the genome of Streptococcus mutans B14. Pan-genome analysis, search for adhesion proteins through a special algorithm, and protein-protein interactions search through HPIDB have been done. Pan-genome analysis of 187 whole genomes, assemblies revealed 6965 genes in total and 918 genes forming the core gene cluster. Adhesion to the endothelial cell is a critical virulence factor distinguishing virulent and non-virulent strains. Overall, 4% of the total proteins in S. mutans B14 were categorized as adhesion proteins. Protein-protein interaction between putative adhesion proteins and Human extracellular matrix components was predicted, revealing novel interactions. A conserved gene catalyzing the synthesis of branched-chain amino acids in S. mutans B14 shows possible interaction with isoforms of cathepsin protein of the ECM. This genome sequence analysis indicates towards other proteins in the S. mutans genome, which might have a specific role to play in host cell interaction.
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Affiliation(s)
- Srinivasan Sujitha
- 1Department of Genetics, School of Biological Sciences, Madurai Kamaraj University, Madurai, Tamil Nadu 625021 India
| | - Udayakumar S Vishnu
- 1Department of Genetics, School of Biological Sciences, Madurai Kamaraj University, Madurai, Tamil Nadu 625021 India
| | - Raman Karthikeyan
- 1Department of Genetics, School of Biological Sciences, Madurai Kamaraj University, Madurai, Tamil Nadu 625021 India
| | - Jagadesan Sankarasubramanian
- 1Department of Genetics, School of Biological Sciences, Madurai Kamaraj University, Madurai, Tamil Nadu 625021 India
| | | | - Jeyaprakash Rajendhran
- 1Department of Genetics, School of Biological Sciences, Madurai Kamaraj University, Madurai, Tamil Nadu 625021 India
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Fathallah N, Raafat MM, Issa MY, Abdel-Aziz MM, Bishr M, Abdelkawy MA, Salama O. Bio-Guided Fractionation of Prenylated Benzaldehyde Derivatives as Potent Antimicrobial and Antibiofilm from Ammi majus L. Fruits-Associated Aspergillus amstelodami. Molecules 2019; 24:molecules24224118. [PMID: 31739552 PMCID: PMC6891696 DOI: 10.3390/molecules24224118] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2019] [Revised: 10/28/2019] [Accepted: 10/28/2019] [Indexed: 02/06/2023] Open
Abstract
Ammi majus L.; Family Apiaceae; is a plant indigenous to Egypt. Its fruits contain bioactive compounds such as furanocoumarins and flavonoids of important biological activities. An endophytic fungus was isolated from the fruits and identified as Aspergillus amstelodami (MK215708) by morphology, microscopical characterization, and molecular identification. To our knowledge this is the first time an endophytic fungus has been isolated from the fruits. The antimicrobial activity of the Ammi majus ethanol fruits extract (AME) and fungal ethyl acetate extract (FEA) were investigated, where the FEA showed higher antimicrobial activity, against all the tested standard strains. Phytochemical investigation of the FEA extract yielded five prenylated benzaldehyde derivative compounds isolated for the first time from this species: Dihydroauroglaucin (1), tetrahydroauroglaucin (2), 2-(3,6-dihydroxyhepta-1,4-dien-1-yl)-3,6-dihydroxy-5-(dimethylallyl)benzaldehyde (3), isotetrahydroauroglaucin )4), and flavoglaucin (5). Structure elucidation was carried out using (1H- and 13C-NMR). Fractions and the major isolated compound 1 were evaluated for their antimicrobial and antibiofilm activity. Compound 1 showed high antimicrobial activity against Escherichia coli with minimum inhibitory concentration (MIC) = 1.95 µg/mL, Streptococcus mutans (MIC = 1.95 µg/mL), and Staphylococcus aureus (MIC = 3.9 µg/mL). It exhibited high antibiofilm activity with minimum biofilm inhibitory concentration (MBIC) = 7.81 µg/mL against Staphylococcus aureus and Escherichia coli biofilms and MBIC = 15.63 µg/mL against Streptococcus mutans and Candida albicans and moderate activity (MBIC = 31.25 µg/mL) against Pseudomonas aeruginosa biofilm. This reveals that dihydroauroglaucin, a prenylated benzaldehyde derivative, has a broad spectrum antimicrobial activity. In conclusion, it was observed that the MICs of the FEA are much lower than that of the AME against all susceptible strains, confirming that the antimicrobial activity of Ammi majus may be due to the ability of its endophytic fungi to produce effective secondary metabolites.
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Affiliation(s)
- Noha Fathallah
- Pharmacognosy and Medicinal Plants Department, Faculty of Pharmaceutical Sciences and Pharmaceutical Industries, Future University in Egypt, Cairo 11835, Egypt; (N.F.); (O.S.)
| | - Marwa M. Raafat
- Microbiology and Immunology Department, Faculty of Pharmaceutical Sciences and Pharmaceutical Industries, Future University in Egypt, Cairo 11835, Egypt
- Correspondence: ; Tel.: +2-0100-186-0189
| | - Marwa Y. Issa
- Pharmacognosy Department, Faculty of Pharmacy, Cairo University, Cairo 11562, Egypt; (M.Y.I.); (M.A.A.)
| | - Marwa M. Abdel-Aziz
- Regional Center for Mycology and Biotechnology (RCMB), Al-Azhar University, Cairo 11651, Egypt; or
| | - Mokhtar Bishr
- Arab Company for Pharmaceuticals and Medicinal Plants, El-Sharkya 11361, Egypt;
| | - Mostafa A. Abdelkawy
- Pharmacognosy Department, Faculty of Pharmacy, Cairo University, Cairo 11562, Egypt; (M.Y.I.); (M.A.A.)
| | - Osama Salama
- Pharmacognosy and Medicinal Plants Department, Faculty of Pharmaceutical Sciences and Pharmaceutical Industries, Future University in Egypt, Cairo 11835, Egypt; (N.F.); (O.S.)
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Hirano Y, Hayashi M, Tamura M, Yoshino F, Yoshida A, Masubuchi M, Imai K, Ogiso B. Singlet oxygen generated by a new nonthermal atmospheric pressure air plasma device exerts a bactericidal effect on oral pathogens. J Oral Sci 2019; 61:521-525. [PMID: 31588099 DOI: 10.2334/josnusd.18-0455] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
Abstract
Oral diseases generally have certain bacteria associated with them. Non-thermal atmospheric pressure plasma (NTAP), generated at atmospheric pressure and room temperature, incorporates several molecules, including reactive oxygen species, that can inactivate various bacteria including oral pathogens. For this reason, several NTAP devices have been developed to treat oral diseases. Use of noble gases can enhance the bactericidal efficacy of NTAP, but this requires additional gas supply equipment. Therefore, a new NTAP device that employs ambient air as the working gas was developed. The device generates non-thermal atmospheric pressure air plasma. Here, the singlet oxygen (1O2) levels generated, their bactericidal effects on oral pathogens (Streptococcus mutans, Porphyromonas gingivalis, and Enterococcus faecalis), and the bacterial oxidative stress they imposed were measured. 1O2 generation in phosphatebuffered saline was assessed qualitatively using electron spin resonance (ESR) spectroscopy, and bactericidal efficacy was evaluated by counting of colony-forming units/mL. Bacterial oxidative stress was determined by measurement of hydrogen peroxide (H2O2) and superoxide dismutase (SOD) activity. ESR indicated that the level of 1O2 increased significantly and time-dependently, and was inversely correlated with distance, but the bactericidal effects were correlated only with treatment time (not distance) as H2O2 increased and SOD levels decreased, suggesting that the new device has potential applicability for treatment of oral disease.
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Affiliation(s)
- Yoriyuki Hirano
- Department of Endodontics, Nihon University School of Dentistry
| | - Makoto Hayashi
- Department of Endodontics, Nihon University School of Dentistry
| | - Muneaki Tamura
- Department of Microbiology, Nihon University School of Dentistry
| | - Fumihiko Yoshino
- Division of Photomedical Dentistry, Department of Oral Science, Graduate School of Dentistry, Kanagawa Dental University
| | - Ayaka Yoshida
- Division of Photomedical Dentistry, Department of Oral Science, Graduate School of Dentistry, Kanagawa Dental University
| | | | - Kenichi Imai
- Department of Microbiology, Nihon University School of Dentistry
| | - Bunnai Ogiso
- Department of Endodontics, Nihon University School of Dentistry
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Antimicrobial Activity of Protamine-Loaded Calcium Phosphates against Oral Bacteria. MATERIALS 2019; 12:ma12172816. [PMID: 31480654 PMCID: PMC6747779 DOI: 10.3390/ma12172816] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/29/2019] [Revised: 08/22/2019] [Accepted: 08/29/2019] [Indexed: 01/19/2023]
Abstract
Protamine is an antimicrobial peptide extracted from fish. In this study, we loaded protamine onto dicalcium phosphate anhydride (DCPA), a dental material. Protamine was loaded by stirring DCPA into a protamine solution. To explore the antimicrobial activity of the materials, we cultivated Streptococcus mutans on fabricated discs for 24 h. When S. mutans was cultivated on the discs under no sucrose conditions, the loaded protamine was not released, and the ratio of dead bacteria increased on the surface of P (125) DCPA (half of the saturated level of protamine (125 ppm protamine) was loaded). Aside from P (500) DCPA (saturated level of protamine was loaded), some protamine was released, and the number of planktonic bacteria in the supernatant decreased. Using medium containing 1% sucrose, the release of protamine was promoted from P (125) DCPA due to lowered pH. However, lowering of the pH decreased the antimicrobial activity of protamine. On the other hand, P (500) DCPA released protamine before the pH was lowered, and biofilm formation was inhibited. The loaded protamine expressed antimicrobial activity, both on the surface of the materials and in the surrounding environment. The interaction of loaded protamine with calcium phosphates could promote the application of protamine in the dental field.
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Suppressive Effects of Octyl Gallate on Streptococcus mutans Biofilm Formation, Acidogenicity, and Gene Expression. Molecules 2019; 24:molecules24173170. [PMID: 31480443 PMCID: PMC6749375 DOI: 10.3390/molecules24173170] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2019] [Revised: 08/28/2019] [Accepted: 08/30/2019] [Indexed: 12/14/2022] Open
Abstract
The accumulation of biofilm by Streptococcus mutans bacteria on hard tooth tissues leads to dental caries, which remains one of the most prevalent oral diseases. Hence, the development of new antibiofilm agents is of critical importance. The current study reports the results from testing the effectiveness of octyl gallate (C8-OG) against: (1) S. mutans biofilm formation on solid surfaces (polystyrene, glass), (2) acidogenicity, (3) and the expression of biofilm-related genes. The amount of biofilm formed by S. mutans bacteria was evaluated using the colorimetric method and optical profilometry. The pH of the biofilm growth medium was measured with microelectrode. A quantitative reverse transcription-polymerase chain reaction (RT-qPCR) was used to assess the expression of genes encoding glucan binding protein B (gbpB), glucosyltransferases B, -C, -D (gtfB, -C, -D), and the F-ATPase β subunit of the F1 protein (atpD). The results show that C8-OG significantly diminished biofilm formation by exposed S. mutans on solid surfaces and suppressed acidogenicity in a dose-dependent manner, compared to unexposed bacteria (p < 0.05). The C8-OG concentration of 100.24 µM inhibited S. mutans biofilm development on solid surfaces by 100% and prevented a decrease in pH levels by 99%. In addition, the RT-qPCR data demonstrate that the biofilm-producing bacteria treated with C8-OG underwent a significant reduction in gene expression in the case of the four genes under study (gbpB, gtfC, gtfD, and atpD), and there was a slight decrease in expression of the gtfB gene. However, C8-OG treatments did not produce significant expression change compared to the control for the planktonic cells, although there was a significant increase for the atpD gene. Therefore, C8-OG might be a potent antibiofilm and/or anticaries agent for oral formulations that aim to reduce the prevalence of dental caries.
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Cagna DR, Donovan TE, McKee JR, Eichmiller F, Metz JE, Albouy JP, Marzola R, Murphy KR, Troeltzsch M. Annual review of selected scientific literature: A report of the Committee on Scientific Investigation of the American Academy of Restorative Dentistry. J Prosthet Dent 2019; 122:198-269. [PMID: 31405523 DOI: 10.1016/j.prosdent.2019.05.010] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2019] [Accepted: 05/15/2019] [Indexed: 12/13/2022]
Abstract
This comprehensive review of the 2018 dental literature is provided to inform busy dentists about progress in the profession. Developed by the Committee on Scientific Investigation of the American Academy of Restorative Dentistry, each author brings discipline-specific expertise to one of the 8 sections of the report including (1) prosthodontics; (2) periodontics, alveolar bone, and peri-implant tissues; (3) implant dentistry; (4) dental materials and therapeutics; (5) occlusion and temporomandibular disorders; (6) sleep-related breathing disorders; (7) oral medicine and oral and maxillofacial surgery; and (8) dental caries and cariology. The report targets important information that will likely influence day-to-day treatment decisions. Each review is not intended to stand alone but to update interested readers so that they may visit source materials if greater detail is desired. As the profession continues its march toward evidence-based clinical decision-making, an already voluminous library of potentially valuable dental literature continues to grow. It is the intention of this review and its authors to provide assistance in navigating the extensive dental literature published in 2018. It is our hope that readers find this work useful in the clinical management of patients moving forward.
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Affiliation(s)
- David R Cagna
- Professor, Associate Dean, and Residency Director, Department of Prosthodontics, University of Tennessee Health Sciences Center, College of Dentistry, Memphis, Tenn.
| | - Terence E Donovan
- Professor and Head of Biomaterials, Department of Restorative Sciences, University of North Carolina School of Dentistry, Chapel Hill, NC
| | - James R McKee
- Private practice, Restorative Dentistry, Downers Grove, Ill
| | | | - James E Metz
- Private practice, Restorative Dentistry, Columbus, Ohio
| | - Jean-Pierre Albouy
- Assistant Professor, Department of Restorative Sciences, University of North Carolina School of Dentistry, Chapel Hill, NC
| | | | - Kevin R Murphy
- Associate Clinical Professor, Department of Periodontics, University of Maryland College of Dentistry, Baltimore, MD; Private practice, Periodontics and Prosthodontics, Baltimore, MD
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Tagaino R, Washio J, Abiko Y, Tanda N, Sasaki K, Takahashi N. Metabolic property of acetaldehyde production from ethanol and glucose by oral Streptococcus and Neisseria. Sci Rep 2019; 9:10446. [PMID: 31320675 PMCID: PMC6639336 DOI: 10.1038/s41598-019-46790-9] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2019] [Accepted: 07/02/2019] [Indexed: 12/28/2022] Open
Abstract
Acetaldehyde is known to be carcinogenic and produced by oral bacteria. Thus, bacterial acetaldehyde production might contribute to oral cancer. Therefore, we examined bacterial acetaldehyde production from ethanol and glucose under various conditions mimicking the oral cavity and clarified the metabolic pathways responsible for bacterial acetaldehyde production. Streptococcus mitis, S. salivarius, S. mutans, Neisseria mucosa and N. sicca were used. The bacterial metabolism was conducted at pH 5.0–8.0 under aerobic and anaerobic conditions. The production of acetaldehyde and organic acids was measured with gas chromatography and HPLC, respectively. Bacterial enzymes were also assessed. All of the bacteria except for S. mutans exhibited their greatest acetaldehyde production from ethanol at neutral to alkaline pH under aerobic conditions. S. mutans demonstrated the greatest acetaldehyde from glucose under anaerobic conditions, although the level was much lower than that from ethanol. Alcohol dehydrogenase and NADH oxidase were detected in all of the bacteria. This study revealed that oral indigenous bacteria, Streptococcus and Neisseria can produce acetaldehyde, and that such acetaldehyde production is affected by environmental conditions. It was suggested that alcohol dehydrogenase and NADH oxidase are involved in ethanol-derived acetaldehyde production and that the branched-pathway from pyruvate is involved in glucose-derived acetaldehyde production.
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Affiliation(s)
- Ryo Tagaino
- Division of Oral Ecology and Biochemistry, Tohoku University Graduate School of Dentistry, Sendai, Japan.,Division of Advanced Prosthetic Dentistry, Tohoku University Graduate School of Dentistry, Sendai, Japan
| | - Jumpei Washio
- Division of Oral Ecology and Biochemistry, Tohoku University Graduate School of Dentistry, Sendai, Japan
| | - Yuki Abiko
- Division of Oral Ecology and Biochemistry, Tohoku University Graduate School of Dentistry, Sendai, Japan
| | - Naoko Tanda
- Division of Preventive Dentistry, Tohoku University Graduate School of Dentistry, Sendai, Japan
| | - Keiichi Sasaki
- Division of Advanced Prosthetic Dentistry, Tohoku University Graduate School of Dentistry, Sendai, Japan
| | - Nobuhiro Takahashi
- Division of Oral Ecology and Biochemistry, Tohoku University Graduate School of Dentistry, Sendai, Japan.
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130
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Scharnow AM, Solinski AE, Wuest WM. Targeting S. mutans biofilms: a perspective on preventing dental caries. MEDCHEMCOMM 2019; 10:1057-1067. [PMID: 31391878 PMCID: PMC6644389 DOI: 10.1039/c9md00015a] [Citation(s) in RCA: 54] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/10/2019] [Accepted: 03/12/2019] [Indexed: 02/06/2023]
Abstract
The prevalence of biofilm diseases, and dental caries in particular, have encouraged extensive research on S. mutans biofilms, including methods of preventing its formation. Numerous small molecules with specific anti-biofilm activity against this pathogen have been isolated and synthesized. Generally, these molecules can be characterized into three categories: sucrose-dependent anti-adhesion, sucrose-independent anti-adhesion and cellular signaling interference. This review aims to provide an overview of the current small molecule strategies used for targeting S. mutans biofilms, and a perspective of the future for the field.
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Affiliation(s)
- Amber M Scharnow
- Emory University , Chemistry Department , 1515 Dickey Dr , Atlanta , GA 30322 , USA .
| | - Amy E Solinski
- Emory University , Chemistry Department , 1515 Dickey Dr , Atlanta , GA 30322 , USA .
| | - William M Wuest
- Emory University , Chemistry Department , 1515 Dickey Dr , Atlanta , GA 30322 , USA .
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131
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Roeslan MO, Ayudhya TDN, Yingyongnarongkul BE, Koontongkaew S. Anti-biofilm, nitric oxide inhibition and wound healing potential of purpurin-18 phytyl ester isolated from Clinacanthus nutans leaves. Biomed Pharmacother 2019; 113:108724. [DOI: 10.1016/j.biopha.2019.108724] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2018] [Revised: 02/21/2019] [Accepted: 02/21/2019] [Indexed: 12/11/2022] Open
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132
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Liu ZF, Chen JL, Li WY, Fan MW, Li YH. FimH as a mucosal adjuvant enhances persistent antibody response and protective efficacy of the anti-caries vaccine. Arch Oral Biol 2019; 101:122-129. [PMID: 30927661 DOI: 10.1016/j.archoralbio.2019.02.009] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2018] [Revised: 02/07/2019] [Accepted: 02/16/2019] [Indexed: 11/16/2022]
Abstract
OBJECTIVE To investigate whether the recombinant FimH-S.T protein could modulate immune response to anti-caries vaccine in vitro and in vivo. DESIGN Recombinant FimH protein derived from Salmonella was constructed and purified. The expression of dendritic cell maturation markers and cytokines release were performed by flow cytometry, Real-time PCR and ELISA. In addition, BALB/c mice were administered with anti-caries PAc vaccine plus FimH-S.T, antibody responses were evaluated by ELISA. Splenocytes of immunized mice were detected for their proliferative ability in response to in vitro retreatment with PAc antigen by flow cytometry. Caries protection against dental caries formation was also investigated. RESULTS The purified FimH-S.T induced phenotypic maturation of DC2.4 by up-regulating the expression of costimulatory molecules and MHC II, provoked the production and secretion of cytokines via TLR4-dependent signaling pathway in vitro. Furthermore, the mice immunized with the mixture of FimH-S.T and PAc significantly enhanced the PAc-specific antibodies in the serum along with saliva and promoted splenocyte proliferation. Our results also confirmed that PAc+FimH-S.T decreased the caries lesions formation which provided high protective efficacy against dental caries. CONCLUSION Our study demonstrates that recombinant FimH-S.T could enhance specific IgA responses and protection of anti-caries vaccine, possessing mucosal adjuvant ability by activating DC2.4 via TLR4 signaling pathway.
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Affiliation(s)
- Zhong-Fang Liu
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) & Key Laboratory of Oral Biomedicine of Ministry of Education (KLOBM), School and Hospital of Stomatology, Wuhan University, Wuhan 430079,China
| | - Jun-Lan Chen
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) & Key Laboratory of Oral Biomedicine of Ministry of Education (KLOBM), School and Hospital of Stomatology, Wuhan University, Wuhan 430079,China
| | - Wu-You Li
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) & Key Laboratory of Oral Biomedicine of Ministry of Education (KLOBM), School and Hospital of Stomatology, Wuhan University, Wuhan 430079,China
| | - Ming-Wen Fan
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) & Key Laboratory of Oral Biomedicine of Ministry of Education (KLOBM), School and Hospital of Stomatology, Wuhan University, Wuhan 430079,China.
| | - Yu-Hong Li
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) & Key Laboratory of Oral Biomedicine of Ministry of Education (KLOBM), School and Hospital of Stomatology, Wuhan University, Wuhan 430079,China.
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Zorina AS, Maksimova YG, Demakov VA. Biofilm Formation by Monocultures and Mixed Cultures of Alcaligenes faecalis 2 and Rhodococcus ruber gt 1. Microbiology (Reading) 2019. [DOI: 10.1134/s0026261719020140] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
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134
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Could a chelant improve the effect of curcumin-mediated photodynamic antimicrobial chemotherapy against dental intact biofilms? Lasers Med Sci 2019; 34:1185-1192. [DOI: 10.1007/s10103-018-02708-x] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2018] [Accepted: 12/14/2018] [Indexed: 12/20/2022]
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135
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Kim SA, Smith S, Beauchamp C, Song Y, Chiang M, Giuseppetti A, Frukhtbeyn S, Shaffer I, Wilhide J, Routkevitch D, Ondov JM, Kim JJ. Cariogenic potential of sweet flavors in electronic-cigarette liquids. PLoS One 2018; 13:e0203717. [PMID: 30192874 PMCID: PMC6128655 DOI: 10.1371/journal.pone.0203717] [Citation(s) in RCA: 41] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2018] [Accepted: 08/24/2018] [Indexed: 01/12/2023] Open
Abstract
Background Most electronic-cigarette liquids contain propylene glycol, glycerin, nicotine and a wide variety of flavors of which many are sweet. Sweet flavors are classified as saccharides, esters, acids or aldehydes. This study investigates changes in cariogenic potential when tooth surfaces are exposed to e-cigarette aerosols generated from well-characterized reference e-liquids with sweet flavors. Methods Reference e-liquids were prepared by combining 20/80 propylene glycol/glycerin (by volume fraction), 10 mg/mL nicotine, and flavors. Aerosols were generated by a Universal Electronic-Cigarette Testing Device (49.2 W, 0.2 Ω). Streptococcus mutans (UA159) were exposed to aerosols on tooth enamel and the biological and physiochemical parameters were measured. Results E-cigarette aerosols produced four-fold increase in microbial adhesion to enamel. Exposure to flavored aerosols led to two-fold increase in biofilm formation and up to a 27% decrease in enamel hardness compared to unflavored controls. Esters (ethyl butyrate, hexyl acetate, and triacetin) in e-liquids were associated with consistent bacteria-initiated enamel demineralization, whereas sugar alcohol (ethyl maltol) inhibited S. mutans growth and adhesion. The viscosity of the e-liquid allowed S. mutans to adhere to pits and fissures. Aerosols contained five metals (mean ± standard deviation): calcium (0.409 ± 0.002) mg/L, copper (0.011 ± 0.001) mg/L, iron (0.0051 ± 0.0003) mg/L, magnesium (0.017 ± 0.002) mg/L, and silicon (0.166 ± 0.005) mg/L. Conclusions This study systematically evaluated e-cigarette aerosols and found that the aerosols have similar physio-chemical properties as high-sucrose, gelatinous candies and acidic drinks. Our data suggest that the combination of the viscosity of e-liquids and some classes of chemicals in sweet flavors may increase the risk of cariogenic potential. Clinical investigation is warranted to confirm the data shown here.
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Affiliation(s)
- Shin Ae Kim
- Volpe Research Center, American Dental Association Foundation, Gaithersburg, Maryland, United States of America
| | - Samuel Smith
- Department of Chemical and Biological Engineering, University of Colorado Boulder, Boulder, Colorado, United States of America
| | - Carlos Beauchamp
- National Institute of Standards and Technology, U.S. Department of Commerce, Gaithersburg, Maryland, United States of America
| | - Yang Song
- National Institute of Standards and Technology, U.S. Department of Commerce, Gaithersburg, Maryland, United States of America
| | - Martin Chiang
- National Institute of Standards and Technology, U.S. Department of Commerce, Gaithersburg, Maryland, United States of America
| | - Anthony Giuseppetti
- Volpe Research Center, American Dental Association Foundation, Gaithersburg, Maryland, United States of America
| | - Stanislav Frukhtbeyn
- Volpe Research Center, American Dental Association Foundation, Gaithersburg, Maryland, United States of America
| | - Ian Shaffer
- Molecular Characterization and Analysis Complex, University of Maryland, Baltimore County, Baltimore, Maryland, United States of America
| | - Joshua Wilhide
- Molecular Characterization and Analysis Complex, University of Maryland, Baltimore County, Baltimore, Maryland, United States of America
| | - Denis Routkevitch
- Department of Biomedical Engineering, Johns Hopkins University, Baltimore, Maryland, United States of America
| | - John M. Ondov
- Department of Chemistry and Biochemistry, University of Maryland, College Park, Maryland, United States of America
| | - Jeffrey J. Kim
- Volpe Research Center, American Dental Association Foundation, Gaithersburg, Maryland, United States of America
- * E-mail:
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Elgamily H, Ghallab O, El-Sayed H, Nasr M. Antibacterial potency and fluoride release of a glass ionomer restorative material containing different concentrations of natural and chemical products: An in-vitro comparative study. J Clin Exp Dent 2018; 10:e312-e320. [PMID: 29750090 PMCID: PMC5937960 DOI: 10.4317/jced.54606] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2017] [Accepted: 02/17/2018] [Indexed: 12/03/2022] Open
Abstract
BACKGROUND This study investigated the antibacterial efficacy against Streptococcus mutans and fluoride release of a conventional glass ionomer (GI) contained natural and chemical agents. MATERIAL AND METHODS Two hundred and ten GI specimens were divided into ten groups (n=21) according to the concentrations of the additives as; Propolis extract containing GI (Groups 1, 2, 3) with concentrations of 0.25%, 0.75% and 1.25% respectively, Miswak extract containing GI (Groups 4, 5, 6) and Chlorhexidine containing GI (Groups 7, 8, 9) with the same concentrations. The prepared specimens were subjected to antimicrobial activity by well diffusion, bacterial adherence, and fluoride release (from 2 to 72 hours) assessments. RESULTS A higher statistically significant antibacterial activity was found in (Groups 2, 3) compared to (Groups 8, 9), while (Groups 1, 4, 5, 6, 7, 10) no antibacterial efficacy was reported. For (Groups 2, 3) had a higher statistically significant anti-adherence effect compared to the other tested groups. Enhanced ascending increase in fluoride release was observed for (Groups 3, 4) compared to (GI). CONCLUSIONS The increased concentration of propolis extract had a synergistic effect on the antimicrobial activity of the tested GI. Additive concentrations of 0.25% Miswak and 1.25% propolis could enhance the fluoride-releasing ability of the tested GI. Key words:Propolis, miswak, chlorhexidine, glass ionomer, fluoride.
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Affiliation(s)
- Hanaa Elgamily
- Restorative and Dental Materials Department, Oral and Dental Division, National Research Centre, Giza, Egypt
| | - Omaima Ghallab
- Operative Dentistry Department, Faculty of Dentistry, Ain-Shams University, Cairo, Egypt
| | - Hoda El-Sayed
- Dairy Science Department, Food Industries and Nutrition Division, National Research Centre, Giza, Egypt
| | - Maha Nasr
- Pharmaceutics and Industrial Pharmacy Department, Faculty of Pharmacy, Ain -Shams University, Cairo, Egypt
- Pharmaceutics and Pharmaceutical Technology Department, College of Pharmaceutical Sciences, Mutah University, Jordan
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