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Choi EY, Lee JE, Lee AR, Choi IS, Kim SJ. Carbon monoxide-releasing molecule-401, a water-soluble manganese-based metal carbonyl, suppresses Prevotella intermedia lipopolysaccharide-induced production of nitric oxide in murine macrophages. Immunopharmacol Immunotoxicol 2023; 45:94-101. [PMID: 36053007 DOI: 10.1080/08923973.2022.2119998] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
CONTEXT Many reports in the literature have suggested the therapeutic value of carbon monoxide-releasing molecules (CORMs) against various diseases. However, to date, little is known about their possible influence on periodontal disease. OBJECTIVE This study was performed to investigate the influence of CORM-401 on the generation of nitric oxide (NO) in murine macrophage cells activated with lipopolysaccharide (LPS) derived from Prevotella intermedia, a pathogen associated with periodontal disease. MATERIALS AND METHODS LPS was isolated by the hot phenol-water method. Culture supernatants were analyzed for NO. Real-time PCR and immunoblotting were conducted to quantify mRNA and protein expression, respectively. NF-κB-dependent SEAP levels were estimated by reporter assay. DNA-binding of NF-κB was also analyzed. RESULTS CORM-401 caused an apparent suppression of NO production through inhibition of iNOS at both the mRNA and protein levels in RAW264.7 cells stimulated with P. intermedia LPS. CORM-401 upregulated the expression of both the HO-1 gene and its protein in LPS-activated cells, and treatment with the HO-1 inhibitor significantly reversed the attenuating influence of CORM-401 against LPS-induced generation of NO. CORM-401 caused an apparent attenuation of NF-κB-dependent SEAP release induced by LPS. IκB-α degradation and nuclear translocation of NF-κB p50 subunit induced by LPS were significantly reduced by CORM-401. Additionally, CORM-401 significantly attenuated DNA-binding of p65 and p50 induced by LPS. CORM-401 attenuated NO generation induced by P. intermedia LPS independently of PPAR-γ, JNK, p38 and STAT1/3. CONCLUSION The modulation of host inflammatory response by CORM-401 might be of help in the therapy of periodontal disease.
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Affiliation(s)
- Eun-Young Choi
- Department of Biological Science, College of Medical and Life Sciences, Silla University, Busan, Korea
| | - Jung Eun Lee
- Department of Biological Science, College of Medical and Life Sciences, Silla University, Busan, Korea
| | - Ah Rim Lee
- Department of Biological Science, College of Medical and Life Sciences, Silla University, Busan, Korea
| | - In Soon Choi
- Department of Biological Science, College of Medical and Life Sciences, Silla University, Busan, Korea
| | - Sung-Jo Kim
- Department of Periodontology, School of Dentistry, Pusan National University, Yangsan, Korea.,Dental and Life Science Institute, Pusan National University, Yangsan, Korea
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Oral Microbiota from Periodontitis Promote Oral Squamous Cell Carcinoma Development via γδ T Cell Activation. mSystems 2022; 7:e0046922. [PMID: 36000726 PMCID: PMC9600543 DOI: 10.1128/msystems.00469-22] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
Oral squamous cell carcinoma (OSCC) is a fatal disease, and periodontitis is associated with OSCC development. However, the pathogenesis in the context of OSCC with periodontitis has not been fully understood. Here, we demonstrated that periodontitis promoted OSCC development, accompanied by alterations in the oral bacterial community and the tumor immune microenvironment. The oral microbiota from periodontitis maintained the dominant position throughout the whole process of OSCC with periodontitis, of which Porphyromonas was the most abundant genus. The oral microbiota from periodontitis could activate interleukin-17-positive (IL-17+) γδ T cells directly. The activated γδ T cells were necessary for the IL-17/signal transducer and activator of transcription 3 (STAT3) pathway and promoted M2-tumor-associated macrophage (TAM) infiltration in OSCC proliferation. Our data provide insight into the carcinogenesis of OSCC with periodontitis by outlining the tumor-associated immune response shaped by the oral microbiota from periodontitis. Thus, oral commensal bacteria and IL-17+ γδ T cells might be potential targets for monitoring and treating OSCC. IMPORTANCE The work reveals the role of the oral microbiota from periodontitis in carcinogenesis. Furthermore, our study provides insight into the pathogenesis of OSCC with periodontitis by outlining the tumor-associated immune response shaped by the oral microbiota from periodontitis, which might identify new research and intervention targets for OSCC with periodontitis.
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Jiang Y, Song B, Brandt BW, Cheng L, Zhou X, Exterkate RAM, Crielaard W, Deng DM. Comparison of Red-Complex Bacteria Between Saliva and Subgingival Plaque of Periodontitis Patients: A Systematic Review and Meta-Analysis. Front Cell Infect Microbiol 2021; 11:727732. [PMID: 34692561 PMCID: PMC8531218 DOI: 10.3389/fcimb.2021.727732] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2021] [Accepted: 09/14/2021] [Indexed: 02/05/2023] Open
Abstract
The development of periodontitis is associated with an imbalanced subgingival microbial community enriched with species such as the traditionally classified red-complex bacteria (Porphyromonas gingivalis, Tannerella forsythia, and Treponema denticola). Saliva has been suggested as an alternative to subgingival plaque for the microbial analysis due to its easy and non-invasive collection. This systematic review aims to determine whether the levels of red-complex bacteria assessed using saliva reflect those in subgingival plaque from periodontitis patients. The MEDLINE, EMBASE, and Cochrane Library databases were searched up to April 30, 2021. Studies were considered eligible if microbial data of at least one of the red-complex species were reported in both saliva and subgingival plaque from periodontitis patients, based on DNA-based methods. Of the 17 included studies, 4 studies used 16S rRNA gene sequencing techniques, and the rest used PCR-based approaches. The detection frequency of each red-complex species in periodontitis patients was reported to be > 60% in most studies, irrespective of samples types. Meta-analyses revealed that both detection frequencies and relative abundances of red-complex bacteria in saliva were significantly lower than those in subgingival plaque. Moreover, the relative abundances of all 3 bacterial species in saliva showed significantly positive correlation with those in subgingival plaque. In conclusion, current evidence suggests that one-time saliva sampling cannot replace subgingival plaque for microbial analysis of the red-complex bacteria in periodontitis patients. Given the positive microbial associations between saliva and subgingival plaque, a thorough review of longitudinal clinical studies is needed to further assess the role of saliva.
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Affiliation(s)
- Yaling Jiang
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases & Department of Cariology and Endodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, China
- Department of Preventive Dentistry, Academic Center for Dentistry Amsterdam (ACTA), University of Amsterdam and Vrije Universiteit Amsterdam, Amsterdam, Netherlands
| | - Bingqing Song
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases & Department of Cariology and Endodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Bernd W. Brandt
- Department of Preventive Dentistry, Academic Center for Dentistry Amsterdam (ACTA), University of Amsterdam and Vrije Universiteit Amsterdam, Amsterdam, Netherlands
| | - Lei Cheng
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases & Department of Cariology and Endodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Xuedong Zhou
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases & Department of Cariology and Endodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Rob A. M. Exterkate
- Department of Preventive Dentistry, Academic Center for Dentistry Amsterdam (ACTA), University of Amsterdam and Vrije Universiteit Amsterdam, Amsterdam, Netherlands
| | - Wim Crielaard
- Department of Preventive Dentistry, Academic Center for Dentistry Amsterdam (ACTA), University of Amsterdam and Vrije Universiteit Amsterdam, Amsterdam, Netherlands
| | - Dong Mei Deng
- Department of Preventive Dentistry, Academic Center for Dentistry Amsterdam (ACTA), University of Amsterdam and Vrije Universiteit Amsterdam, Amsterdam, Netherlands
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Pezzali JG, Machado GS, Marx FR, Eugênio DA, Schroeder B, Pignone VN, Trevizan L. Effects of autoclaving on compressive strength of bovine bones and their use as chewing agents for dogs. Transl Anim Sci 2021; 5:txab068. [PMID: 34189414 PMCID: PMC8223599 DOI: 10.1093/tas/txab068] [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: 06/10/2020] [Accepted: 04/12/2021] [Indexed: 11/22/2022] Open
Abstract
This study aimed to evaluate the effect of autoclave processing on compressive stress of spongy and cortical bones, and the effect of autoclaved bones as chewing agents to reduce dental calculus in adult dogs. Spongy and cortical bones were autoclaved (1 ATM, 30 min, and 120°C) and compressive strength was evaluated in autoclaved and raw bone specimens. Autoclaved bones were offered to ten Beagle dogs divided into two groups of 5 dogs each: Group 1 – received a portion of the autoclaved bovine cortical bone (ACB) and Group 2 – received a portion of the autoclaved bovine spongy bone (ASB). Prior to the experimental period (1-d) and every two days thereafter, oral photographs were taken on both sides of the dental arch to evaluate dental calculus reduction over time. The vestibular surface of the canines, premolars, and molars teeth was evaluated using integration software to measure the proportion between the area covered by calculus and the total teeth area. The effect of bone type, treatment (raw vs. autoclaved), and their interaction were evaluated using the PROC GLIMMIX procedure of SAS (version 9.4). Linear equations were generated to estimate calculus reduction over time for ACB and ASB. Compressive strength was higher (P < 0.05) in cortical bones compared to spongy bones. However, the autoclaving procedure did not affect (P > 0.05) compressive strength, regardless of the bone type. The teeth area covered by calculus of dogs that were offered ACB reduced from 41% to 32% in 5 days, and at the end of 15 days a reduction of 62.2% was observed, resulting in a remaining of 15.5% of teeth area covered by calculus. In this group, the dental calculus area reduced by 57.7% after 5 days, and at the end of the trial, only 5.4% of teeth were still covered by calculus, which represents a reduction of 81%. The linear regression analysis revealed no significant difference between the slopes for the ACB and ASB equations (P > 0.05). No health complications such as tooth fracture, intestinal obstructions, and oral lesions were observed throughout the study. Our results demonstrated that the autoclave processing did not impair compressive strength of spongy and cortical bones. This corroborates with the results observed in vivo, which suggests that autoclaved bones are chewing agents for adult dogs with additional benefits of lower risk of bacterial contamination.
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Affiliation(s)
- J G Pezzali
- Department of Animal Science, Federal University of Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, 91540-000, Brazil
| | - G S Machado
- Department of Animal Science, Federal University of Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, 91540-000, Brazil
| | - F R Marx
- Department of Animal Science, Federal University of Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, 91540-000, Brazil
| | - D A Eugênio
- Department of Animal Science, Federal University of Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, 91540-000, Brazil
| | - B Schroeder
- Department of Animal Science, Federal University of Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, 91540-000, Brazil
| | - V N Pignone
- All Pet Odonto, Rua Fernandes Vieira 181, ap 902, 90035-091, Porto Alegre, Brazil
| | - L Trevizan
- Department of Animal Science, Federal University of Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, 91540-000, Brazil
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Choi EY, Keum BR, Choe SH, Hyeon JY, Choi IS, Kim SJ. Tricarbonyldichlororuthenium(II) dimer, the lipid-soluble carbon monoxide-releasing molecule, attenuates Prevotella intermedia lipopolysaccharide-induced production of nitric oxide and interleukin-1β in murine macrophages. Int Immunopharmacol 2020; 90:107190. [PMID: 33223468 DOI: 10.1016/j.intimp.2020.107190] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2020] [Revised: 11/04/2020] [Accepted: 11/05/2020] [Indexed: 12/31/2022]
Abstract
Carbon monoxide (CO) is increasingly being appreciated as an important mediator that has pleiotropic biological properties and appears to have a possible therapeutic application for a variety of disorders. Nevertheless, whether this gaseous molecule may be utilized as a therapeutic intervention for periodontal disease is unclear. Here, we examined the potential beneficial effect of CO-releasing molecule-2 (CORM-2), a tricarbonyldichlororuthenium(II) dimer, against the elaboration of proinflammatory mediators by murine macrophages challenged with lipopolysaccharide (LPS) isolated from Prevotella intermedia, a pathogenic bacterium implicated in inflammatory periodontal disease. We found that NO and IL-1β production, iNOS protein expression and mRNA expressions of iNOS and IL-1β were significantly down-regulated when LPS-challenged RAW264.7 cells were exposed to CORM-2. In addition, HO-1 expression was upregulated by CORM-2 in cells activated with P. intermedia LPS, and the inhibitory influence of CORM-2 upon NO production was attenuated by tin protoporphyrin IX, an inhibitor of HO activity. PPAR-γ did not function in the attenuation of NO and IL-1β by CORM-2. JNK and p38 phosphorylation caused by LPS was not altered by CORM-2. CORM-2 reduced NF-κB reporter activity and IκB-α degradation elicited by P. intermedia LPS. Additionally, CORM-2 inhibited LPS-induced phosphorylation of STAT1/3. In conclusion, CORM-2 suppresses NO and IL-1β production caused by P. intermedia LPS. CORM-2 exerts its effect by a mechanism involving anti-inflammatory HO-1 induction and attenuation of NF-κB and STAT1/3 activation, independently of PPAR-γ as well as JNK and p38. CORM-2 may hold promise as host response modulation agent for periodontal disease, though further research is indicated to verify the therapeutic effect.
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Affiliation(s)
- Eun-Young Choi
- Department of Biological Science, College of Medical and Life Sciences, Silla University, 140 Baegyang-daero, 700beon-gil, Sasang-gu, Busan 617-736, Republic of Korea
| | - Bo Ram Keum
- Department of Biological Science, College of Medical and Life Sciences, Silla University, 140 Baegyang-daero, 700beon-gil, Sasang-gu, Busan 617-736, Republic of Korea
| | - So-Hui Choe
- Department of Biological Science, College of Medical and Life Sciences, Silla University, 140 Baegyang-daero, 700beon-gil, Sasang-gu, Busan 617-736, Republic of Korea
| | - Jin-Yi Hyeon
- Department of Biological Science, College of Medical and Life Sciences, Silla University, 140 Baegyang-daero, 700beon-gil, Sasang-gu, Busan 617-736, Republic of Korea
| | - In Soon Choi
- Department of Biological Science, College of Medical and Life Sciences, Silla University, 140 Baegyang-daero, 700beon-gil, Sasang-gu, Busan 617-736, Republic of Korea
| | - Sung-Jo Kim
- Department of Periodontology, School of Dentistry, Pusan National University, 49 Busandaehak-ro, Mulgeum-eup, Yangsan, Gyeongsangnam-do 626-870, Republic of Korea; Dental Research Institute, Pusan National University Dental Hospital, Yangsan, Gyeongsangnam-do, Republic of Korea; Dental and Life Science Institute, Pusan National University, Yangsan, Gyeongsangnam-do, Republic of Korea.
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Choi JU, Lee JB, Kim KH, Kim S, Seol YJ, Lee YM, Rhyu IC. Comparison of Periodontopathic Bacterial Profiles of Different Periodontal Disease Severity Using Multiplex Real-Time Polymerase Chain Reaction. Diagnostics (Basel) 2020; 10:E965. [PMID: 33213109 PMCID: PMC7698795 DOI: 10.3390/diagnostics10110965] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2020] [Revised: 11/12/2020] [Accepted: 11/13/2020] [Indexed: 12/17/2022] Open
Abstract
Periodontopathic bacteria are known to have a pivotal role in the pathogenesis of periodontitis. The aim of the study was to quantitatively compare bacterial profile of patients with different severity of periodontal disease using samples from mouthwash and the subgingival area. Further analysis was performed to evaluate the correlation between mouthwash and two subgingival sampling methods: paperpoint and gingival retraction cord; 114 subjects enrolled in the study, and were divided equally into three groups according to disease severity. Mouthwash and subgingival sampling were conducted, and the samples were quantitatively analyzed for 11 target periodontopathic bacteria using multiplex real-time PCR. There were statistically significant differences in bacterial counts and prevalence of several species between the study groups. Mouthwash sampling showed significant correlations with two different subgingival sampling methods in regard to the detection of several bacteria (e.g., ρ = 0.793 for Porphyromonas gingivalis in severe periodontitis), implying that mouthwash sampling can reflect subgingival microbiota. However, the correlation was more prominent as disease severity increased. Although bacteria in mouthwash have potential to become a biomarker, it may be more suitable for the diagnosis of severe periodontitis, rather than early diagnosis. Further research is required for the discovery of biomarkers for early diagnosis of periodontitis.
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Affiliation(s)
- Jin Uk Choi
- Department of Periodontology and Dental Research Institute, School of Dentistry, Seoul National University, Seoul 03080, Korea; (J.U.C.); (K.-H.K.); (S.K.); (Y.-J.S.); (Y.-M.L.)
- Department of Periodontics, Seoul National University Dental Hospital, Seoul 03080, Korea;
| | - Jun-Beom Lee
- Department of Periodontics, Seoul National University Dental Hospital, Seoul 03080, Korea;
| | - Kyoung-Hwa Kim
- Department of Periodontology and Dental Research Institute, School of Dentistry, Seoul National University, Seoul 03080, Korea; (J.U.C.); (K.-H.K.); (S.K.); (Y.-J.S.); (Y.-M.L.)
| | - Sungtae Kim
- Department of Periodontology and Dental Research Institute, School of Dentistry, Seoul National University, Seoul 03080, Korea; (J.U.C.); (K.-H.K.); (S.K.); (Y.-J.S.); (Y.-M.L.)
- Department of Periodontics, Seoul National University Dental Hospital, Seoul 03080, Korea;
| | - Yang-Jo Seol
- Department of Periodontology and Dental Research Institute, School of Dentistry, Seoul National University, Seoul 03080, Korea; (J.U.C.); (K.-H.K.); (S.K.); (Y.-J.S.); (Y.-M.L.)
- Department of Periodontics, Seoul National University Dental Hospital, Seoul 03080, Korea;
| | - Yong-Moo Lee
- Department of Periodontology and Dental Research Institute, School of Dentistry, Seoul National University, Seoul 03080, Korea; (J.U.C.); (K.-H.K.); (S.K.); (Y.-J.S.); (Y.-M.L.)
- Department of Periodontics, Seoul National University Dental Hospital, Seoul 03080, Korea;
| | - In-Chul Rhyu
- Department of Periodontology and Dental Research Institute, School of Dentistry, Seoul National University, Seoul 03080, Korea; (J.U.C.); (K.-H.K.); (S.K.); (Y.-J.S.); (Y.-M.L.)
- Department of Periodontics, Seoul National University Dental Hospital, Seoul 03080, Korea;
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Hyeon JY, Choi EY, Choe SH, Park HR, Choi JI, Choi IS, Kim SJ. Agomelatine, a MT1/MT2 melatonergic receptor agonist with serotonin 5-HT2C receptor antagonistic properties, suppresses Prevotella intermedia lipopolysaccharide-induced production of proinflammatory mediators in murine macrophages. Arch Oral Biol 2017; 82:11-18. [DOI: 10.1016/j.archoralbio.2017.05.015] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2016] [Revised: 04/18/2017] [Accepted: 05/20/2017] [Indexed: 11/28/2022]
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TIAN L, SATO T, NIWA K, KAWASE M, MAYANAGI G, WASHIO J, TAKAHASHI N. PCR-dipstick DNA chromatography for profiling of a subgroup of cariesassociated bacterial species in plaque from healthy coronal surfaces and periodontal pockets . Biomed Res 2016; 37:29-36. [DOI: 10.2220/biomedres.37.29] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Affiliation(s)
- Lingyang TIAN
- Division of Oral Ecology and Biochemistry, Tohoku University Graduate School of Dentistry
- State Key Laboratory of Oral Diseases, Sichuan University
| | - Takuichi SATO
- Division of Oral Ecology and Biochemistry, Tohoku University Graduate School of Dentistry
| | - Kousuke NIWA
- Future Technology Management Center, Corporate R&D, NGK Insulators
| | - Mitsuo KAWASE
- Tohoku University Graduate School of Biomedical Engineering
| | - Gen MAYANAGI
- Division of Oral Ecology and Biochemistry, Tohoku University Graduate School of Dentistry
| | - Jumpei WASHIO
- Division of Oral Ecology and Biochemistry, Tohoku University Graduate School of Dentistry
| | - Nobuhiro TAKAHASHI
- Division of Oral Ecology and Biochemistry, Tohoku University Graduate School of Dentistry
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Choi EY, Bae SH, Ha MH, Choe SH, Hyeon JY, Choi JI, Choi IS, Kim SJ. Genistein suppresses Prevotella intermedia lipopolysaccharide-induced inflammatory response in macrophages and attenuates alveolar bone loss in ligature-induced periodontitis. Arch Oral Biol 2015; 62:70-9. [PMID: 26655950 DOI: 10.1016/j.archoralbio.2015.11.019] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2015] [Revised: 09/08/2015] [Accepted: 11/23/2015] [Indexed: 10/22/2022]
Abstract
OBJECTIVE Genistein is a major isoflavone subclass of flavonoids found in soybean and a potent tyrosine kinase inhibitor. The present study aimed to assess the effect of genistein on the production of proinflammatory mediators in murine macrophages stimulated with lipopolysaccharide (LPS) isolated from Prevotella intermedia, a pathogen associated with different forms of periodontal disease, and to evaluate its possible influence on alveolar bone loss in ligature-induced periodontitis using micro-computed tomography (micro-CT) analysis as well. DESIGN LPS was isolated from P. intermedia ATCC 25611 by using the standard hot phenol-water method. Culture supernatants were analyzed for nitric oxide (NO) and interleukin-6 (IL-6). Inducible NO synthase (iNOS) protein expression was evaluated by immunoblot analysis. Real-time PCR was carried out to measure iNOS and IL-6 mRNA expression. In addition, effect of genistein on alveolar bone loss was evaluated in a rat model of experimental periodontitis using micro-CT analysis. RESULTS Genistein significantly attenuated P. intermedia LPS-induced production of iNOS-derived NO and IL-6 with attendant decrease in their mRNA expression in RAW264.7 cells. In addition, when genistein was administered to rats, decreases in alveolar bone height and bone volume fraction induced by ligature placement were significantly inhibited. Genistein administration also prevented ligature-induced alterations in the microstructural parameters of trabecular bone, including trabecular thickness, trabecular separation, bone mineral density and structure model index. CONCLUSIONS While additional studies are required, we suggest that genistein could be utilized for the therapy of human periodontitis in the future.
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Affiliation(s)
- Eun-Young Choi
- Department of Biological Science, College of Medical and Life Sciences, Silla University, Busan, Republic of Korea
| | - Seung Han Bae
- Department of Periodontology, School of Dentistry, Pusan National University, Yangsan, Gyeongsangnam-do, Republic of Korea
| | - Min Hee Ha
- Department of Periodontology, School of Dentistry, Pusan National University, Yangsan, Gyeongsangnam-do, Republic of Korea
| | - So-Hui Choe
- Department of Biological Science, College of Medical and Life Sciences, Silla University, Busan, Republic of Korea
| | - Jin-Yi Hyeon
- Department of Biological Science, College of Medical and Life Sciences, Silla University, Busan, Republic of Korea
| | - Jeom-Il Choi
- Department of Periodontology, School of Dentistry, Pusan National University, Yangsan, Gyeongsangnam-do, Republic of Korea; Dental Research Institute, Pusan National University Dental Hospital, Yangsan, Gyeongsangnam-do, Republic of Korea
| | - In Soon Choi
- Department of Biological Science, College of Medical and Life Sciences, Silla University, Busan, Republic of Korea
| | - Sung-Jo Kim
- Department of Periodontology, School of Dentistry, Pusan National University, Yangsan, Gyeongsangnam-do, Republic of Korea; Dental Research Institute, Pusan National University Dental Hospital, Yangsan, Gyeongsangnam-do, Republic of Korea; Institute of Translational Dental Sciences, Pusan National University, Yangsan, Gyeongsangnam-do, Republic of Korea.
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Carbon monoxide-releasing molecule-3 suppresses Prevotella intermedia lipopolysaccharide-induced production of nitric oxide and interleukin-1β in murine macrophages. Eur J Pharmacol 2015; 764:22-29. [DOI: 10.1016/j.ejphar.2015.06.039] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2015] [Revised: 06/17/2015] [Accepted: 06/18/2015] [Indexed: 01/10/2023]
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Sales-Peres SHDC, de Moura-Grec PG, Yamashita JM, Torres EA, Dionísio TJ, Leite CVDS, Sales-Peres A, Ceneviva R. Periodontal status and pathogenic bacteria after gastric bypass: a cohort study. J Clin Periodontol 2015; 42:530-6. [PMID: 25924695 DOI: 10.1111/jcpe.12410] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/19/2015] [Indexed: 11/30/2022]
Abstract
AIM The aim this study was to evaluate the influence of gastric bypass surgery (GBS) on periodontal disease and quantify the periodontopathogenic bacteria in patients undergoing this surgery. MATERIAL AND METHODS This prospective study was composed of 50 patients who underwent bariatric surgery and the data collection was performed in three periods pre-operative, 6 (6M) and 12 months (12 M) postoperative. The oral clinical examination to assess periodontal disease; gingival fluid sample collection for quantification of the periodontopathogenic bacteria Porphyromonas gingivalis, Tannerella forsythia, Treponema denticola, and Prevotella intermedia using q-PCR; body mass index (BMI) and for collection of the individual's health-related data from medical files. RESULTS There was a significant reduction in serum C-reactive protein (CRP) and glucose levels after surgery. The mean probing pocket depth (PPD) and clinical attachment level (CAL) increased significantly in the postoperative period of 6 months (p = 0.001). In the same period, the amount of P. gingivalis increased (p = 0.028) and the other bacteria decreased slightly (p > 0.050). In the presence of P. gingivalis, T. forsythia, T. denticola and P. intermedia, a poor periodontal condition was observed. CONCLUSION The periodontal disease increased in severity and P. gingivalis increased after GBS. A systemic inflammation resolution due to bariatric surgery in obese subjects does not seem to affect the course of periodontal disease.
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Affiliation(s)
| | - Patrícia Garcia de Moura-Grec
- Department of Pediatric Dentistry, Orthodontics and Public Health, Bauru School of Dentistry, University of São Paulo, Bauru, Brazil
| | - Joselene Martinelli Yamashita
- Department of Pediatric Dentistry, Orthodontics and Public Health, Bauru School of Dentistry, University of São Paulo, Bauru, Brazil
| | - Elza Araujo Torres
- Department of Pediatric Dentistry, Orthodontics and Public Health, Bauru School of Dentistry, University of São Paulo, Bauru, Brazil
| | - Thiago José Dionísio
- Department Biological Science, Bauru School of Dentistry, University of São Paulo, Bauru, Brazil
| | | | - Arsenio Sales-Peres
- Department of Pediatric Dentistry, Orthodontics and Public Health, Bauru School of Dentistry, University of São Paulo, Bauru, Brazil
| | - Reginaldo Ceneviva
- Ribeirão Preto School of Medicine, University of São Paulo, Ribeirão Preto, Brazil
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12
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Choi EY, Choe SH, Hyeon JY, Choi JI, Choi IS, Kim SJ. Effect of caffeic acid phenethyl ester on Prevotella intermedia
lipopolysaccharide-induced production of proinflammatory mediators in murine macrophages. J Periodontal Res 2015; 50:737-47. [DOI: 10.1111/jre.12260] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/29/2014] [Indexed: 12/20/2022]
Affiliation(s)
- E.-Y. Choi
- Department of Biological Science; College of Medical and Life Sciences; Silla University; Busan Korea
| | - S.-H. Choe
- Department of Biological Science; College of Medical and Life Sciences; Silla University; Busan Korea
| | - J.-Y. Hyeon
- Department of Biological Science; College of Medical and Life Sciences; Silla University; Busan Korea
| | - J.-I. Choi
- Department of Periodontology; School of Dentistry; Pusan National University; Yangsan Korea
- Dental Research Institute; Pusan National University Dental Hospital; Yangsan Korea
| | - I. S. Choi
- Department of Biological Science; College of Medical and Life Sciences; Silla University; Busan Korea
| | - S.-J. Kim
- Department of Periodontology; School of Dentistry; Pusan National University; Yangsan Korea
- Dental Research Institute; Pusan National University Dental Hospital; Yangsan Korea
- Institute of Translational Dental Sciences; Pusan National University; Yangsan Korea
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13
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Arikan V, Kizilci E, Ozalp N, Ozcelik B. Effects of Fixed and Removable Space Maintainers on Plaque Accumulation, Periodontal Health, Candidal and Enterococcus Faecalis Carriage. Med Princ Pract 2015; 24:311-7. [PMID: 26044443 PMCID: PMC5588238 DOI: 10.1159/000430787] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/07/2014] [Accepted: 04/19/2015] [Indexed: 01/12/2023] Open
Abstract
OBJECTIVE To evaluate the effects of space maintainers on plaque accumulation, periodontal health and oral microflora. SUBJECTS AND METHODS The study participants comprised 38 patients aged 4-10 years requiring either fixed or removable space maintainers. Plaque index, gingival index, bleeding on probing index, candidal colonization and Enterococcus faecalis were recorded just before the application of space maintainers (T0) and during treatment at the 1st (T1), 3rd (T2) and 6th (T3) month. RESULTS The gingival and bleeding on probing index scores increased significantly (gingival index from 0.20 ± 0254 to 0.54 ± 0417 and bleeding on probing index from 7.18 ± 9.946 to 18.07 ± 14.074) in the regions with fixed space maintainers at T3 (p < 0.01). The mean Candida counts also increased (for removable appliances from 1.90 ± 3.638 to 1.98 ± 3.318, p < 0.05, and for fixed appliances from 4.25 ± 4.587 to 4.52 ± 4.431, p < 0.001). The salivary E. faecalis counts at T3 also increased significantly with the use of fixed and removable appliances (for removable appliances from 5.93 ± 2.65 to 85.53 ± 34.1 and for fixed appliances from 4.95 ± 2.94 to 123.59 ± 29.51, p < 0.001). A positive correlation was found between the plaque (r = 0.67), gingival (r = 0.76) and bleeding on probing index scores (r = 0.76) and the candidal colonization for the fixed space maintainers (p < 0.01, p < 0.001). CONCLUSIONS In this study, both fixed and removable space maintainers led to an increase in the number of microorganisms in the oral cavity as well as to increases in the periodontal index scores. Patients should be informed that space maintainers may serve as a source of infection and that special attention must be given to their oral hygiene.
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Affiliation(s)
- Volkan Arikan
- Department of Pedodontics, Faculty of Dentistry, Kirikkale University, Kirikkale, Turkey
| | - Esra Kizilci
- Department of Pedodontics, Faculty of Dentistry, Inonu University, Malatya, Turkey
- *Esra Kizilci, Inonu Universitesi, Diş Hekimligi Fakültesi, Pedodonti Anabilim Dal�, TR–44000 Malatya, Merkez (Turkey), E-Mail
| | - Nurhan Ozalp
- Department of Pedodontics, Faculty of Dentistry, Ankara University, Ankara, Turkey
| | - Berrin Ozcelik
- Department of Pharmaceutic Microbiology, Faculty of Pharmacy, Gazi University, Ankara, Turkey
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14
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Thurnheer T, Belibasakis GN. Integration of non-oral bacteria into in vitro oral biofilms. Virulence 2014; 6:258-64. [PMID: 25483866 PMCID: PMC4601515 DOI: 10.4161/21505594.2014.967608] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2014] [Revised: 09/01/2014] [Accepted: 09/13/2014] [Indexed: 01/23/2023] Open
Abstract
Biofilms are polymicrobial communities that grow on surfaces in nature. Oral bacteria can spontaneously form biofilms on the surface of teeth, which may compromise the health of the teeth, or their surrounding (periodontal) tissues. While the oral bacteria exhibit high tropism for their specialized ecological niche, it is not clear if bacteria that are not part of the normal oral microbiota can efficiently colonize and grow within oral biofilms. By using an in vitro "supragingival" biofilm model of 6 oral species, this study aimed to investigate if 3 individual bacterial species that are not part of the normal oral microbiota (Eschericia coli, Staphylococcus aureus, Enterococcus faecails) and one not previously tested oral species (Aggregatibacter actinomycetemcomitans) can be incorporated into this established supragingival biofilm model. Staphylococcus aureus and A. actinomycetemcomitans were able to grow efficiently in the biofilm, without disrupting the growth of the remaining species. They localized in sparse small aggregates within the biofilm mass. Enterococcus faecalis and E. coli were both able to populate the biofilm at high numbers, and suppressed the growth of A. oris and S. mutants. Enterococcus faecalis was arranged in a chain-like conformation, whereas E. coli was densely and evenly spread throughout the biofilm mass. In conclusion, it is possible for selected species that are not part of the normal oral microbiota to be introduced into an oral biofilm, under the given experimental micro-environmental conditions. Moreover, the equilibrated incorporation of A. actinomycetemcomitans and S. aureus in this oral biofilm model could be a useful tool in the study of aggressive periodontitis and peri-implantitis, in which these organisms are involved, respectively.
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Affiliation(s)
- Thomas Thurnheer
- Oral Microbiology and Immunology, Institute of Oral Biology, Center of Dental Medicine; University of Zürich; Zürich, Switzerland
| | - Georgios N Belibasakis
- Oral Microbiology and Immunology, Institute of Oral Biology, Center of Dental Medicine; University of Zürich; Zürich, Switzerland
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15
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State of oral mucosa as an additional symptom in the course of primary amyloidosis and multiple myeloma disease. Case Rep Med 2014; 2014:293063. [PMID: 25013412 PMCID: PMC4070359 DOI: 10.1155/2014/293063] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2014] [Accepted: 05/22/2014] [Indexed: 11/17/2022] Open
Abstract
Multiple myeloma (myeloma multiplex (MM)) is a malignant non-Hodgkin's lymphoma derived from B cell. Its essence is a malignant clone of plasma cells synthesizing growth of monoclonal immunoglobulin, which infiltrate the bone marrow, destroy the bone structure, and prevent the proper production of blood cells components. The paper presents a case of 62-year-old patient who developed symptoms in addition to neurological and haematological changes in the oral mucosa in the course of multiple myeloma. The treatment resulted in partial improvement. The authors wish to draw attention not only to nonspecificity and rarity of changes in the mouth which can meet the dentist but also to the complexity of the multidisciplinary therapy patients diagnosed with MM.
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16
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Effect of azithromycin on Prevotella intermedia lipopolysaccharide-induced production of interleukin-6 in murine macrophages. Eur J Pharmacol 2014; 729:10-6. [DOI: 10.1016/j.ejphar.2014.02.008] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2013] [Revised: 01/27/2014] [Accepted: 02/07/2014] [Indexed: 12/30/2022]
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17
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Hou YY, Zhen YH, Wang D, Zhu J, Sun DX, Liu XT, Wang HX, Liu Y, Long YY, Shu XH. Protective effect of an egg yolk-derived immunoglobulin (IgY) against Prevotella intermedia-mediated gingivitis. J Appl Microbiol 2014; 116:1020-7. [PMID: 24320204 DOI: 10.1111/jam.12419] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2013] [Revised: 11/26/2013] [Accepted: 12/03/2013] [Indexed: 11/26/2022]
Abstract
AIMS To investigate the effects of an egg yolk-derived immunoglobulin (IgY) specific to Prevotella intermedia in vitro and in vivo. METHODS AND RESULTS An IgY specific to P. intermedia was produced by immunizing hens with formaldehyde-inactivated P. intermedia and showed high titres when subjected to an ELISA. The obtained IgY inhibited the growth of P. intermedia in a dose-dependent manner at concentrations from 1 to 20 mg ml(-1) in Center for Disease Control and Prevention liquid medium. Forty rats were challenged with P. intermedia on gingivae and then randomly divided into four groups, which were syringed respectively with phosphate-buffered saline, 1 mg ml(-1) of tinidazole, 20 mg ml(-1) of nonspecific IgY and 20 mg ml(-1) of the IgY specific to P. intermedia at a dosage of 300 μl per day. Gingival index (GI), plaque index (PI), bleeding on probing (BOP), counts of white blood cell (WBC) and histopathological slide of the gums were measured after treatment for 15 days. The gingivitis rats treated with the IgY specific to P. intermedia showed significantly decreased GI, PI, BOP and WBC (P < 0·05). Gum histopathology of the treated rats demonstrated a superior protective effect of the specific IgY on P. intermedia-mediated gingivitis. CONCLUSIONS A new immunoglobulin specific to P. intermedia was developed from egg yolk. This specific IgY can dose-dependently inhibit the growth of P. intermedia and protect rats from gingivitis induced by P. intermedia. SIGNIFICANCE AND IMPACT OF THE STUDY The new IgY has potential for the treatment of P. intermedia-mediated gingivitis.
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Affiliation(s)
- Y-Y Hou
- Clinical Medicine of Seven-year-program, Dalian Medical University, Dalian, China
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18
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Jin JY, Choi EY, Park HR, Choi JI, Choi IS, Kim SJ. Isorhamnetin inhibits Prevotella intermedia lipopolysaccharide-induced production of interleukin-6 in murine macrophages via anti-inflammatory heme oxygenase-1 induction and inhibition of nuclear factor-κB and signal transducer and activator of transcription 1 activation. J Periodontal Res 2013; 48:687-95. [PMID: 23441850 DOI: 10.1111/jre.12054] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/03/2013] [Indexed: 11/28/2022]
Abstract
BACKGROUND AND OBJECTIVE Interleukin-6 (IL-6) is a key proinflammatory cytokine that has been considered to be important in the pathogenesis of periodontal disease. Therefore, host-modulatory agents directed at inhibiting IL-6 appear to be beneficial in terms of attenuating periodontal disease progression and potentially improving disease susceptibility. In the current study, we investigated the effect of the flavonoid isorhamnetin on the production of IL-6 in murine macrophages stimulated with lipopolysaccharide (LPS) from Prevotella intermedia, a pathogen implicated in inflammatory periodontal disease, and its mechanisms of action. MATERIAL AND METHODS Lipopolysaccharide from P. intermedia ATCC 25611 was isolated using the standard hot phenol-water method. Culture supernatants were collected and assayed for IL-6. We used real-time PCR to quantify IL-6 and heme oxygenase-1 (HO-1) mRNA expression. The expression of HO-1 protein and the levels of signaling proteins were monitored using immunoblot analyses. The DNA-binding activity of nuclear factor-κB (NF-κB) was analyzed using ELISA-based assay kits. RESULTS Isorhamnetin significantly down-regulated P. intermedia LPS-induced production of IL-6 as well as its mRNA expression in RAW264.7 cells. Isorhamnetin up-regulated the expression of HO-1 at both gene transcription and translation levels in cells stimulated with P. intermedia LPS. In addition, inhibition of HO-1 activity by tin protoporphyrin IX blocked the inhibitory effect of isorhamnetin on IL-6 production. Isorhamnetin failed to prevent LPS from activating either c-Jun N-terminal kinase or p38 pathways. Isorhamnetin did not inhibit NF-κB transcriptional activity at the level of inhibitory κB-α degradation. Isorhamnetin suppressed NF-κB signaling through inhibition of nuclear translocation and DNA binding activity of NF-κB p50 subunit and attenuated signal transducer and activator of transcription 1 signaling. CONCLUSION Although further research is required to clarify the detailed mechanism of action, we propose that isorhamnetin may contribute to blockade of the host-destructive processes mediated by IL-6 and could be a highly efficient modulator of the host response in the treatment of inflammatory periodontal disease. Further research in animal models of periodontitis is required to better evaluate, the potential of isorhamnetin as a novel agent for treating periodontal disease.
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Affiliation(s)
- J Y Jin
- Department of Biological Science, College of Medical and Life Sciences, Silla University, Busan, Korea
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Rams TE, Feik D, Mortensen JE, Degener JE, van Winkelhoff AJ. Antibiotic susceptibility of periodontal Enterococcus faecalis. J Periodontol 2012; 84:1026-33. [PMID: 23106507 DOI: 10.1902/jop.2012.120050] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
BACKGROUND Enterococcus faecalis may contribute to periodontal breakdown in heavily infected subgingival sites, particularly in patients responding poorly to mechanical forms of periodontal therapy. Because only limited data are available on the antimicrobial sensitivity of enterococci of subgingival origin, this study evaluates the in vitro antibiotic susceptibility of E. faecalis isolated from periodontitis patients in the United States. METHODS Pure cultures of 47 subgingival E. faecalis clinical isolates were each inoculated onto specially prepared broth microdilution susceptibility panels containing vancomycin, teicoplanin, and six oral antibiotics of potential use in periodontal therapy. After incubation in ambient air for 18 to 20 hours, minimal inhibitory drug concentrations were determined using applicable Clinical and Laboratory Standards Institute criteria and interpretative guidelines. The organisms were additionally evaluated for in vitro resistance to metronidazole at 4 μg/mL. RESULTS Periodontal E. faecalis exhibited substantial in vitro resistance to tetracycline (53.2% resistant), erythromycin (80.8% resistant or intermediate resistant), clindamycin (100% resistant to 2 μg/mL), and metronidazole (100% resistant to 4 μg/mL). In comparison, the clinical isolates were generally sensitive to ciprofloxacin (89.4% susceptible; 10.6% intermediate resistant) and 100% susceptible in vitro to ampicillin, amoxicillin/clavulanate, vancomycin, and teicoplanin. CONCLUSIONS Tetracycline, erythromycin, clindamycin, and metronidazole revealed poor in vitro activity against human subgingival E. faecalis clinical isolates, and would likely be ineffective therapeutic agents against these species in periodontal pockets. Among orally administered antibiotics, ampicillin, amoxicillin/clavulanate, and ciprofloxacin exhibited marked in vitro inhibitory activity against periodontal E. faecalis, and may be clinically useful in treatment of periodontal infections involving enterococci.
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Affiliation(s)
- Thomas E Rams
- Department of Periodontology and Oral Implantology, Oral Microbiology Testing Service Laboratory, Temple University School of Dentistry, Philadelphia, PA 19140, USA.
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Choi EY, Jin JY, Lee JY, Choi JI, Choi IS, Kim SJ. Anti-inflammatory effects and the underlying mechanisms of action of daidzein in murine macrophages stimulated with Prevotella intermedia lipopolysaccharide. J Periodontal Res 2011; 47:204-11. [PMID: 21972936 DOI: 10.1111/j.1600-0765.2011.01422.x] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Abstract
BACKGROUND AND OBJECTIVE Host modulatory agents directed at inhibiting specific proinflammatory mediators could be beneficial in terms of attenuating periodontal disease progression and potentially enhancing therapeutic responses. The aim of this study was to investigate whether daidzein could modulate the production inflammatory mediators in macrophages stimulated with lipopolysaccharide (LPS) from Prevotella intermedia, a pathogen implicated in periodontal disease, and to delineate underlying mechanisms of action. MATERIAL AND METHODS LPS was extracted from P. intermedia ATCC 25611 cells by the standard hot phenol-water method. The amounts of nitric oxide (NO) and interleukin-6 (IL-6) secreted into the culture medium were assayed. A real-time PCR was performed to quantify inducible nitric oxide synthase (iNOS) and IL-6 mRNA expression. We used immunoblot analysis to characterize iNOS protein expression, phosphrylation of c-Jun N-terminal kinase (JNK) and p38, degradation of inhibitory κB-α (IκB-α), nuclear translocation of nuclear factor-κB (NF-κB) subunits and phosphorylation of signal transducer and activator of transcription 1 (STAT1). The DNA-binding activity of NF-κB was assessed by using ELISA-based kits. RESULTS Daidzein significantly inhibited the production of NO and IL-6, as well as their mRNA expression, in P. intermedia LPS-treated RAW264.7 cells. The JNK and p38 pathways were not involved in the regulation of LPS-induced NO and IL-6 release by daidzein. Daidzein inhibited the degradation of IκB-α induced by P. intermedia LPS. In addition, daidzein suppressed NF-κB transcriptional activity via regulation of the nuclear translocation and DNA-binding activity of NF-κB p50 subunit and blocked STAT1 phosphorylation. CONCLUSION Although additional studies are required to dissect the molecular mechanism of action, our results suggest that daidzein could be a promising agent for treating inflammatory periodontal disease. Further research in animal models of periodontitis is necessary to better evaluate the potential of daidzein as a novel therapeutic agent to treat periodontal disease.
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Affiliation(s)
- E-Y Choi
- Department of Biological Science, College of Medical and Life Sciences, Silla University, Busan, Korea
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21
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Kouidhi B, Zmantar T, Mahdouani K, Hentati H, Bakhrouf A. Antibiotic resistance and adhesion properties of oral Enterococci associated to dental caries. BMC Microbiol 2011; 11:155. [PMID: 21714920 PMCID: PMC3150259 DOI: 10.1186/1471-2180-11-155] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2011] [Accepted: 06/29/2011] [Indexed: 01/12/2023] Open
Abstract
BACKGROUND Enterococci are increasingly associated with opportunistic infections in Humans but the role of the oral cavity as a reservoir for this species is unclear. This study aimed to explore the carriage rate of Enterococci in the oral cavity of Tunisian children and their antimicrobial susceptibility to a broad range of antibiotics together with their adherence ability to abiotic and biotic surfaces. RESULTS In this study, 17 E. faecalis (27.5%) and 4 E. faecium (6.5%) were detected. The identified strains showed resistance to commonly used antibiotics. Among the 17 isolated E. faecalis, 12 strains (71%) were slime producers and 5 strains were non-producers. Among the 4 E. faecium, 2 strains were slime producers. All the tested strains were able to adhere to at least one of the two tested cell lines. Our result showed that 11 E. faecalis and 2 E. faecium strains adhered strongly to Hep-2 as well as to A549 cells. CONCLUSIONS Drugs resistance and strong biofilm production abilities together with a high phenotypic adhesion to host cells are important equipment in E. faecalis and E. faecium which lead to their oral cavity colonization and focal infections.
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Affiliation(s)
- Bochra Kouidhi
- Laboratoire d'Analyses, Traitement et Valorisation des Polluants de l'Environnement et des Produits, Faculté de Pharmacie, rue Avicenne 5000, Université de Monastir (Tunisie
| | - Tarek Zmantar
- Laboratoire d'Analyses, Traitement et Valorisation des Polluants de l'Environnement et des Produits, Faculté de Pharmacie, rue Avicenne 5000, Université de Monastir (Tunisie
| | - Kacem Mahdouani
- Laboratoire de Biologie moléculaire, Hôpital Régionale de Kairouan, (Tunisie
| | - Hajer Hentati
- Service de Médecine et chirurgie buccales Clinique hospitalo-universitaire d'Odontologie, Université de Monastir (Tunisie
| | - Amina Bakhrouf
- Laboratoire d'Analyses, Traitement et Valorisation des Polluants de l'Environnement et des Produits, Faculté de Pharmacie, rue Avicenne 5000, Université de Monastir (Tunisie
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Contardo M, Díaz N, Lobos O, Padilla C, Giacaman R. Oral colonization by Streptococcus mutans and its association with the severity of periodontal disease in adults. ACTA ACUST UNITED AC 2011. [DOI: 10.1016/s0718-5391(11)70058-1] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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