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Rams TE, Contreras A, Slots J. Aggressive periodontitis in southwestern American Indian adolescents. J Periodontol 2023. [PMID: 37910464 DOI: 10.1002/jper.23-0410] [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: 07/07/2023] [Revised: 10/07/2023] [Accepted: 10/08/2023] [Indexed: 11/03/2023]
Abstract
BACKGROUND This study determined the prevalence of aggressive (molar-incisor pattern) (Ag/MI) periodontitis and assessed the associated subgingival bacterial-herpesvirus microbiota in Pueblo Indian adolescents in the southwestern United States. METHODS The study included 240 Pueblo Indian adolescents, aged 13-20 years old, residing in three Rio Grande River villages in New Mexico and the Hopi Pueblo reservation in Arizona. Adolescents with Ag/MI periodontitis or periodontal health provided subgingival samples for culture of bacterial pathogens and for polymerase chain reaction detection of periodontal herpesviruses. RESULTS Ag/MI periodontitis was detected in 22 (9.2%) Pueblo Indian adolescents, with 21 exhibiting a localized molar-incisor breakdown pattern. Aggregatibacter actinomycetemcomitans, Porphyromonas gingivalis, and other red/orange complex bacterial pathogens predominated in Ag/MI periodontitis, whereas periodontal health yielded mainly viridans streptococci and Actinomyces species. Periodontal herpesviruses demonstrated a 3.5 odds ratio relationship with Ag/MI periodontitis. The only adolescent with generalized Ag/MI periodontitis harbored viral co-infection by cytomegalovirus plus Epstein-Barr virus Type 1, in addition to A. actinomycetemcomitans, P. gingivalis, and several other periodontopathic bacteria. CONCLUSIONS Pueblo Indian adolescents showed an unusually high prevalence of early-age Ag/MI periodontitis predominated by periodontopathic bacteria and herpesviruses suspected to be major etiologic agents of the disease.
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Affiliation(s)
- Thomas E Rams
- Department of Periodontology and Oral Implantology, Temple University School of Dentistry, Philadelphia, Pennsylvania, USA
| | - Adolfo Contreras
- Periodontal Medicine Research Group, Department of Periodontology, Universidad del Valle School of Dentistry, Cali, Colombia
| | - Jørgen Slots
- Division of Periodontology and Diagnostic Sciences, University of Southern California School of Dentistry, Los Angeles, California, USA
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2
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Antimicrobial Behavior and Cytotoxicity of Indocyanine Green in Combination with Visible Light and Water-Filtered Infrared A Radiation against Periodontal Bacteria and Subgingival Biofilm. Biomedicines 2022; 10:biomedicines10050956. [PMID: 35625693 PMCID: PMC9138561 DOI: 10.3390/biomedicines10050956] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2022] [Revised: 04/12/2022] [Accepted: 04/18/2022] [Indexed: 01/10/2023] Open
Abstract
The widespread increase of antibiotic resistance highlights the need for alternative treatments such as antimicrobial photodynamic therapy (aPDT). This study aimed to evaluate the antimicrobial behavior and cytotoxicity of aPDT with indocyanine green (ICG) in combination with visible light (Vis) and water-filtered infrared A (wIRA). Representative periodontal bacteria (Parvimonas micra, Atopobium riame, Slackia exigua, Actinomyces naeslundii, Porphyromonas gingivalis, Fusobacterium nucleatum, Aggregatibacter actinomycetemcomitans, and Prevotella nigrescens) and subgingival in situ biofilms from periodontal patients were treated with aPDT for 5 min. ICG was used at different concentrations (50–500 µg/mL) and the number of viable cells was determined in colony forming units (CFU). Untreated negative controls and 0.2% chlorhexidine as a positive control were also prepared. The cytotoxicity test on human keratinocytes in vitro was analyzed with the AlamarBlue assay after 5, 10, and 20 min, with four ICG concentrations, and at two temperatures (room temperature and 37 °C). The tested periodontal pathogens treated with aPDT were eliminated in a range between 1.2 and 6.7 log10 CFU, except for A. naeslundii, which was killed at a lower range. The subgingival biofilm treated with aPDT expressed significant differences to the untreated controls except for at 300 µg/mL ICG concentration. The cytotoxicity was directly related to the concentration of ICG and irradiation time. These observations raise questions concerning the use of this specific aPDT as an adjuvant to periodontal treatments due to its possible toxicity towards human gingival cells.
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Isolation and Characterization of Capnocytophaga bilenii sp. nov., a Novel Capnocytophaga Species Detected in a Gingivitis Subject. Pathogens 2021; 10:pathogens10050547. [PMID: 34062778 PMCID: PMC8147312 DOI: 10.3390/pathogens10050547] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2021] [Revised: 04/29/2021] [Accepted: 04/30/2021] [Indexed: 11/25/2022] Open
Abstract
Capnocytophaga species are commensal gliding bacteria that are found in human and animal oral microbiota and are involved in several inflammatory diseases, both in immunocompromised and immunocompetent subjects. This study contributes to increased knowledge of this genus by characterizing a novel species isolated from a dental plaque sample in a male with gingivitis. We investigated morphological and chemotaxonomic characteristics using different growth conditions, temperature, and pH. Cellular fatty acid methyl ester (FAME) analysis was employed with gas chromatography/mass spectrometry (GC/MS). Phylogenetic analysis based on 16S rRNA, orthologous average nucleotide identity (OrthoANI), and digital DNA–DNA hybridization (dDDH) relatedness were performed. The Marseille-Q4570T strain was found to be a facultative aerobic, Gram-negative, elongated, round-tipped bacterium that grew at 25–56 °C and tolerated a pH of 5.5 to 8.5 and an NaCl content ranging from 5 to 15 g/L. The most abundant fatty acid was the branched structure 13-methyl-tetradecanoic acid (76%), followed by hexadecanoic acid (6%) and 3-hydroxy-15-methyl-hexadecanoic acid (4%). A 16S rDNA-based similarity analysis showed that the Marseille-Q4570T strain was closely related to Capnocytophaga leadbetteri strain AHN8855T (97.24% sequence identity). The OrthoANI and dDDH values between these two strains were, respectively, 76.81% and 25.6%. Therefore, we conclude that the Marseille-Q4570T strain represents a novel species of the genus Capnocytophaga, for which the name Capnocytophaga bilenii sp. nov. is proposed (=CSUR Q4570).
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Developing Lactic Acid Bacteria as an Oral Healthy Food. Life (Basel) 2021; 11:life11040268. [PMID: 33805077 PMCID: PMC8064088 DOI: 10.3390/life11040268] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2021] [Revised: 03/21/2021] [Accepted: 03/22/2021] [Indexed: 02/07/2023] Open
Abstract
Lactic acid bacteria have functions in immunoregulation, antagonism, and pathogen inhibition. The purpose of this study was to evaluate the effectiveness of lactic acid bacteria (LAB) in countering oral pathogens and develop related products. After a series of assays to 450 LAB strains, 8 heat-inactivated strains showed a strong inhibitory effect on a caries pathogen, Streptococcus mutans, and 308 heat-inactivated LAB strains showed a strong inhibitory effect on a periodontal pathogen, Porphyromonas gingivalis. The key reasons for inhibiting oral pathogens were bacteriocins produced by LAB and the coaggregation effect of the inactivated cells. We selected Lacticaseibacillus (Lb) paracasei 111 and Lb.paracasei 141, which had the strongest inhibitory effects on the above pathogens, was the main oral health food source. The optimal cultural conditions of Lb. paracasei 111 and Lb. paracasei 141 were studied. An oral tablet with a shelf life of 446 days made of the above strains was developed. A 40 volunteers' clinical study (CSMUH IRB number: CS05065) was conducted with this tablet in the Periodontological Department of the Stomatology Research Center, Affiliated Hospital of Chung Shan Medical University (Taiwan). After 8 weeks of testing, 95% and 78.9% of patients showed an effect on reducing periodontal pathogens and improving probing pocket depth, respectively, in the oral tablet group.
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Jensen AB, Isidor F, Lund M, Væth M, Johansson A, Lauritsen NN, Haubek D. Prevalence of Aggregatibacter actinomycetemcomitans and Periodontal Findings among 14 to 15-Year Old Danish Adolescents: A Descriptive Cross-Sectional Study. Pathogens 2020; 9:pathogens9121054. [PMID: 33339288 PMCID: PMC7765784 DOI: 10.3390/pathogens9121054] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2020] [Revised: 12/08/2020] [Accepted: 12/11/2020] [Indexed: 12/15/2022] Open
Abstract
Aggregatibacter actinomycetemcomitans (Aa) is a keystone pathogen associated with periodontitis in adolescents. The knowledge on the prevalence of Aa and periodontitis among adolescents in Northern Europe is sparse. A total of 525 14- to 15-year-old adolescents from the municipality of Aarhus, Denmark, underwent a full-mouth clinical examination. Plaque score (PS), bleeding on probing (BOP), probing pocket depth (PPD), and clinical attachment loss (CAL) were recorded. Subgingival plaque samples (SPS) and stimulated saliva samples (SSS) were collected and analyzed for the presence of JP2 and non-JP2 genotypes of Aa using real-time PCR. A total of 70 (13.3%) individuals were positive for Aa, with 17 found in SPS, 19 in SSS, and 35 in both. The highly leukotoxic JP2 genotype of Aa was not detected. The individuals positive for Aa in both SPS and SSS had poorer periodontal outcomes (PPD and CAL) than individuals without Aa and individuals carrying Aa in either SPS or SSS only. In conclusion, 13% of 14- to 15-year-old Danish adolescents were positive for Aa, and the presence of Aa in both SPS and SSS was associated with poorer periodontal outcomes.
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Affiliation(s)
- Anne Birkeholm Jensen
- Section for Pediatric Dentistry, Department of Dentistry and Oral Health, Health, Aarhus University, 8000 Aarhus, Denmark;
- The Municipality of Aarhus, 8000 Aarhus, Denmark
| | - Flemming Isidor
- Section for Prosthetic Dentistry, Department of Dentistry and Oral Health, Health, Aarhus University, 8000 Aarhus, Denmark
| | - Marianne Lund
- Department of Clinical Microbiology, Aarhus University Hospital, Skejby, 8210 Aarhus, Denmark;
| | - Michael Væth
- Department of Public Health, Aarhus University, 8000 Aarhus, Denmark;
| | - Anders Johansson
- Divison of Molecular Periodontology, Department of Odontology, Faculty of Medicine and Odontology, Umea University, 901 87 Umea, Sweden;
| | | | - Dorte Haubek
- Section for Pediatric Dentistry, Department of Dentistry and Oral Health, Health, Aarhus University, 8000 Aarhus, Denmark;
- Correspondence: ; Tel.: +45-21-685-848
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Montenegro SCL, Retamal-Valdes B, Bueno-Silva B, Duarte PM, Faveri M, Figueiredo LC, Feres M. Do patients with aggressive and chronic periodontitis exhibit specific differences in the subgingival microbial composition? A systematic review. J Periodontol 2020; 91:1503-1520. [PMID: 32233092 DOI: 10.1002/jper.19-0586] [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: 11/18/2019] [Revised: 02/15/2020] [Accepted: 02/27/2020] [Indexed: 12/23/2022]
Abstract
BACKGROUND The 2017 World Workshop on the Classification of Periodontal and Peri-Implant Diseases and Conditions grouped the diseases previously recognized as chronic (CP) or aggressive (AgP) periodontitis under a single category named periodontitis. The rationale for this decision was the lack of specific patterns of immune-inflammatory response or microbial profiles associated with CP or AgP. However, no previous studies have compiled the results of all studies comparing subgingival microbial data between these clinical conditions. Thus, this systematic review aimed to answer the following focused question: "Do patients with AgP periodontitis present differences in the subgingival microbiota when compared with patients with CP?" METHODS A systematic review was conducted according to the PRISMA statement. The MEDLINE, EMBASE, and Cochrane databases were searched up to June 2019 for studies of any design (except case reports, case series, and reviews) comparing subgingival microbial data from patients with CP and AgP. RESULTS A total of 488 articles were identified and 56 were included. Thirteen studies found Aggregatibacter actinomycetemcomitans elevated in AgP in comparison with CP, while Fusobacterium nucleatum, Parvimonas micra, and Campylobacter rectus were elevated in AgP in a few studies. None of these species were elevated in CP. However, the number of studies not showing statistically significant differences between CP and AgP was always higher than that of studies showing differences. CONCLUSION These results suggested an association of A. actinomycetemcomitans with AgP, but neither this species nor the other species studied to date were unique to or could differentiate between CP and AgP (PROSPERO #CRD42016039385).
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Affiliation(s)
| | - Belen Retamal-Valdes
- Department of Periodontology, Dental Research Division, Guarulhos University, Guarulhos, SP, Brazil
| | - Bruno Bueno-Silva
- Department of Periodontology, Dental Research Division, Guarulhos University, Guarulhos, SP, Brazil
| | - Poliana Mendes Duarte
- Department of Periodontology, Dental Research Division, Guarulhos University, Guarulhos, SP, Brazil.,Department of Periodontology, School of Advanced Dental Sciences, College of Dentistry, University of Florida, Gainesville, FL, USA
| | - Marcelo Faveri
- Department of Periodontology, Dental Research Division, Guarulhos University, Guarulhos, SP, Brazil
| | | | - Magda Feres
- Department of Periodontology, Dental Research Division, Guarulhos University, Guarulhos, SP, Brazil
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Lee HA, Park MH, Song Y, Na HS, Chung J. Role of
Aggregatibacter actinomycetemcomitans‐
induced autophagy in inflammatory response. J Periodontol 2020; 91:1682-1693. [DOI: 10.1002/jper.19-0639] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2019] [Revised: 02/13/2020] [Accepted: 02/16/2020] [Indexed: 01/26/2023]
Affiliation(s)
- Hyun Ah Lee
- Department of Oral Microbiology School of Dentistry Pusan National University Yangsan Korea
| | - Mi Hee Park
- Department of Oral Microbiology School of Dentistry Pusan National University Yangsan Korea
- Oral Genomics Research Center Pusan National University Yangsan Korea
| | - Yuri Song
- Department of Oral Microbiology School of Dentistry Pusan National University Yangsan Korea
- Oral Genomics Research Center Pusan National University Yangsan Korea
| | - Hee Sam Na
- Department of Oral Microbiology School of Dentistry Pusan National University Yangsan Korea
- Oral Genomics Research Center Pusan National University Yangsan Korea
| | - Jin Chung
- Department of Oral Microbiology School of Dentistry Pusan National University Yangsan Korea
- Oral Genomics Research Center Pusan National University Yangsan Korea
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Cirino CCDS, Vale HFD, Casati MZ, Sallum EA, Casarin RCV, Sallum AW. Clinical and Microbiological Evaluation of Surgical and Nonsurgical Treatment of Aggressive Periodontitis. Braz Dent J 2019; 30:577-586. [PMID: 31800752 DOI: 10.1590/0103-6440201902930] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2019] [Accepted: 06/25/2019] [Indexed: 11/22/2022] Open
Abstract
The present study aimed to evaluate clinical and microbiological effects of surgical and nonsurgical periodontal therapy in generalized aggressive periodontitis (GAgP) treatment. Sixteen GAgP patients were included in this randomized split-mouth design clinical trial. Maxillary quadrants were allocated into two groups: Nonsurgical Therapy (NST) and Surgical Therapy (ST). The following clinical parameters were assessed: plaque index (PI), bleeding on probing index (BoP), probing depth (PD), clinical attachment level (CAL) and gingival margin position (GMP). Concentrations of Porphyromonas gingivalis (Pg) and Aggregatibacter actinomycetemcomitans (Aa) in the subgingival biofilm were also determined. Clinical and microbiological parameters were assessed at baseline (n=16), 3 (n=15), 6 (n=15) and 12 months (n=8) after treatment. ST was able to promote higher PD reduction compared to NST in deep pockets at 12 months (p<0.05) and in posterior teeth at 6 months (p<0.05). In addition, higher gingival recession was observed in posterior teeth of the ST group at the 6th month (p<0.05). However, ST failed to promoted additional CAL gain in any timepoint (p>0.05). Moreover, microbiological evaluation showed no statistical difference in levels of Aa and Pg for both groups at all follow-up periods. Surgical therapy promoted similar clinical benefits to GAgP therapy. Moreover, both therapies failed to reduce Aa and Pg levels at different follow-up times.
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Affiliation(s)
- Camila Camarinha da Silva Cirino
- Department of Prosthodontics and Periodontics, Piracicaba Dental School, UNICAMP - Universidade Estadual de Campinas, Piracicaba, SP, Brazil
| | - Hugo Felipe do Vale
- Department of Periodontics, UEA - Universidade do Estado do Amazonas, Manaus, AM, Brazil
| | - Márcio Zaffalon Casati
- Department of Prosthodontics and Periodontics, Piracicaba Dental School, UNICAMP - Universidade Estadual de Campinas, Piracicaba, SP, Brazil
| | - Enilson Antonio Sallum
- Department of Prosthodontics and Periodontics, Piracicaba Dental School, UNICAMP - Universidade Estadual de Campinas, Piracicaba, SP, Brazil
| | - Renato Corrêa Viana Casarin
- Department of Prosthodontics and Periodontics, Piracicaba Dental School, UNICAMP - Universidade Estadual de Campinas, Piracicaba, SP, Brazil
| | - Antônio Wilson Sallum
- Department of Prosthodontics and Periodontics, Piracicaba Dental School, UNICAMP - Universidade Estadual de Campinas, Piracicaba, SP, Brazil
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Taiete T, Monteiro MF, Casati MZ, do Vale HF, Ambosano GMB, Nociti FH, Sallum EA, Casarin RCV. Local IL-10 level as a predictive factor in generalized aggressive periodontitis treatment response. Scand J Immunol 2019; 90:e12816. [PMID: 31448837 DOI: 10.1111/sji.12816] [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] [Received: 05/10/2019] [Revised: 08/07/2019] [Accepted: 08/20/2019] [Indexed: 12/13/2022]
Abstract
Generalized aggressive periodontitis (GAgP) presents a reduced response to non-surgical therapy. However, it is not clear if the initial clinical, microbiological or immunological characteristics are impacting the worse response to treatment. This study aimed to identify the predictive value of clinical, microbiological and immunological patterns on the clinical response to therapy in GAgP patients. Twenty-four GAgP patients were selected, and gingival crevicular fluid (GCF) and subgingival biofilm were collected. Aggregatibacter actinomycetemcomitans, Porphyromonas gingivalis and Tannerella forsythia levels were evaluated by qPCR, and IL-1β and IL-10 concentration by ELISA. Twelve patients were treated with SRP (scaling and root planning), and twelve with SRP plus 375 mg amoxicillin and 250 mg metronidazole (8/8 hours, 7 days) (SRP + AM). The clinical changes (Probing Pocket Depth [PPD] reduction and Clinical Attachment Level [CAL] gain) 6 months post-treatment were correlated to the initial clinical, inflammatory and microbiological variables using stepwise logistic regression (α = 5%). CAL gain at 6 months was 1.16 ± 0.77 for SRP and 1.74 ± 0.57 mm for SRP + AM (P > .05). PPD reduction was 1.96 ± 0.82 for SRP and 2.45 ± 0.77 mm for SRP + AM (P < .05). In the SRP group, IL-10 showed a predictive value for clinical response. The higher the IL-10 concentration at baseline, the higher the reduction in PPD at 6 months (P = .01, r = .68). However, when antimicrobials were administered, no significant influence was detected (P > .05). It can be concluded that the IL-10 levels in GFC act as a predictor of clinical response to GAgP. Moreover, the intake of antimicrobials appears to overlap the influence of the inflammatory response on clinical response to treatment. Clinical trial registration number: NCT03933501.
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Affiliation(s)
- Tiago Taiete
- Department of Prosthodontics and Periodontics, Periodontics Division, Piracicaba Dental School, University of Campinas, Piracicaba, SP, Brazil.,Department of Dentistry, University of Araras, Araras, SP, Brazil
| | - Mabelle F Monteiro
- Department of Prosthodontics and Periodontics, Periodontics Division, Piracicaba Dental School, University of Campinas, Piracicaba, SP, Brazil
| | - Marcio Z Casati
- Department of Prosthodontics and Periodontics, Periodontics Division, Piracicaba Dental School, University of Campinas, Piracicaba, SP, Brazil.,Department of Periodontics, Paulista University, São Paulo, SP, Brazil
| | | | - Glaucia M B Ambosano
- Division of Biostatistics, Piracicaba Dental School, State University of Campinas, Piracicaba, SP, Brazil
| | - Francisco H Nociti
- Department of Prosthodontics and Periodontics, Periodontics Division, Piracicaba Dental School, University of Campinas, Piracicaba, SP, Brazil
| | - Enilson A Sallum
- Department of Prosthodontics and Periodontics, Periodontics Division, Piracicaba Dental School, University of Campinas, Piracicaba, SP, Brazil
| | - Renato C V Casarin
- Department of Prosthodontics and Periodontics, Periodontics Division, Piracicaba Dental School, University of Campinas, Piracicaba, SP, Brazil
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Phamduong S, Kim CS. Presentation of Localized Aggressive Periodontitis in Monozygotic Twins: Case Report. Clin Adv Periodontics 2019; 9:9-14. [PMID: 31490033 DOI: 10.1002/cap.10041] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2018] [Accepted: 04/02/2018] [Indexed: 11/05/2022]
Abstract
INTRODUCTION Localized aggressive periodontal disease is an uncommon finding observed in adolescents and children. Studies have been conducted to elucidate the etiology, contributing factors, and genetic roles in the phenomena. In particular, twin studies have shown genetic makeup to be a substantial risk factor for periodontitis. This case is, to the best of the authors' knowledge, the first to be presented in literature of a same dwelling, set of monozygotic twins, displaying similar presentation of localized aggressive periodontitis, however with different microbial profiles. CASE PRESENTATION A set of 17-year-old black male monozygotic twins were referred for a full-mouth periodontal evaluation and any necessary periodontal treatment on July 7, 2007. A full-mouth radiographic series, periodontal charting, and intraoral photographs were performed on each individual. A family history was obtained through the biological mother, which yielded no known history of early tooth loss or treatment of severe periodontal disease. The father was not involved in the rearing of the children and his periodontal history was unavailable. An initial and surgical treatment plan was developed. Microbial analysis of subgingival plaque samples was collected on the affected sites. Initial treatment with scaling and root planing, subgingival irrigation, with administration of systemic antibiotics, and oral hygiene instruction, were rendered on both individuals. CONCLUSION Within limitations of this report, it is demonstrated that different microbial pattern exists on aggressive periodontitis even in genetically identical individuals with the same environmental exposure.
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Affiliation(s)
| | - Clara S Kim
- Department of Periodontics, Western University of Health Sciences, College of Dental Medicine, Pomona, CA
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11
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Silva NS, Borsanelli AC, Gaetti-Jardim Júnior E, Schweitzer CM, Silveira JAS, Bomjardim HA, Dutra IS, Barbosa JD. Subgingival bacterial microbiota associated with ovine periodontitis. PESQUISA VETERINARIA BRASILEIRA 2019. [DOI: 10.1590/1678-5150-pvb-5913] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
ABSTRACT: Periodontitis is an inflammatory response in a susceptible host caused by complex microbiota, predominantly composed of Gram-negative anaerobic bacteria. Aiming to characterize the subgingival bacterial microbiota associated with ovine periodontitis, polymerase chain reaction (PCR) was performed in subgingival periodontal pocket samples of 14 sheep with severe periodontitis and in subgingival sulcus biofilm of 14 periodontally healthy sheep in search mainly of Gram-negative and Gram-positive microorganisms considered important periodontopathogens. The most prevalent bacteria in the sheep with periodontal lesions were Tannerella forsythia (78.6%), Treponema denticola (78.6%), Fusobacterium nucleatum (64.3%), and Porphyromonas gingivalis (50%), whereas in the healthy sheep, F. nucleatum (42.8%) was the most often detected bacterium. Statistically significant differences were observed for Campylobacter rectus, Enterococcus faecium, Prevotella nigrescens, T. forsythia, and T. denticola (p<0.05) in the sheep with periodontitis in the comparison between groups. Aggregatibacter actinomycetemcomitans, Enterococcus faecalis, and Porphyromonas gulae were not detected in any of the samples analyzed. In conclusion, C. rectus, E. faecium, P. nigrescens, T. forsythia, and T. denticola were associated with severe lesions caused by ovine periodontitis, and F. nucleatum was the most prevalent microorganism in the subgengival sulcus biofilm of healthy sheep.
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Chung J, Kim S, Lee HA, Park MH, Kim S, Song YR, Na HS. Trans-cinnamic aldehyde inhibitsAggregatibacter actinomycetemcomitans-induced inflammation in THP-1-derived macrophages via autophagy activation. J Periodontol 2018; 89:1262-1271. [DOI: 10.1002/jper.17-0727] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2017] [Revised: 04/17/2018] [Accepted: 04/17/2018] [Indexed: 12/31/2022]
Affiliation(s)
- Jin Chung
- Department of Oral Microbiology; School of Dentistry; Pusan National University; Yangsan South Korea
| | - Sumi Kim
- Department of Oral Microbiology; School of Dentistry; Pusan National University; Yangsan South Korea
| | - Hyun Ah Lee
- Department of Oral Microbiology; School of Dentistry; Pusan National University; Yangsan South Korea
| | - Mi Hee Park
- Department of Oral Microbiology; School of Dentistry; Pusan National University; Yangsan South Korea
| | - Seyeon Kim
- Department of Oral Microbiology; School of Dentistry; Pusan National University; Yangsan South Korea
| | - Yu Ri Song
- Department of Oral Microbiology; School of Dentistry; Pusan National University; Yangsan South Korea
| | - Hee Sam Na
- Department of Oral Microbiology; School of Dentistry; Pusan National University; Yangsan South Korea
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13
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Fine DH, Patil AG, Loos BG. Classification and diagnosis of aggressive periodontitis. J Periodontol 2018; 89 Suppl 1:S103-S119. [DOI: 10.1002/jper.16-0712] [Citation(s) in RCA: 45] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2016] [Revised: 10/11/2017] [Accepted: 10/21/2017] [Indexed: 12/13/2022]
Affiliation(s)
- Daniel H. Fine
- Department of Oral Biology; Rutgers School of Dental Medicine; Rutgers University - Newark; NJ USA
| | - Amey G. Patil
- Department of Oral Biology; Rutgers School of Dental Medicine; Rutgers University - Newark; NJ USA
| | - Bruno G. Loos
- Department of Periodontology; Academic Center of Dentistry Amsterdam (ACTA); University of Amsterdam and Vrije Universiteit; Amsterdam The Netherlands
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14
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Fine DH, Patil AG, Loos BG. Classification and diagnosis of aggressive periodontitis. J Clin Periodontol 2018; 45 Suppl 20:S95-S111. [DOI: 10.1111/jcpe.12942] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2016] [Revised: 10/11/2017] [Accepted: 10/21/2017] [Indexed: 12/30/2022]
Affiliation(s)
- Daniel H. Fine
- Department of Oral Biology; Rutgers School of Dental Medicine; Rutgers University - Newark; NJ USA
| | - Amey G. Patil
- Department of Oral Biology; Rutgers School of Dental Medicine; Rutgers University - Newark; NJ USA
| | - Bruno G. Loos
- Department of Periodontology; Academic Center of Dentistry Amsterdam (ACTA); University of Amsterdam and Vrije Universiteit; Amsterdam The Netherlands
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Rams TE, Sautter JD, Hsiao CY, van Winkelhoff AJ. Phenotypic identification of periodontal Prevotella intermedia/nigrescens group isolates validated by MALDI-TOF mass spectrometry. Anaerobe 2018; 54:201-204. [PMID: 29913204 DOI: 10.1016/j.anaerobe.2018.06.007] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2018] [Revised: 06/15/2018] [Accepted: 06/15/2018] [Indexed: 12/18/2022]
Abstract
The accuracy of a phenotypic scheme to recognize periodontal Prevotella intermedia/nigrescens group clinical isolates on primary isolation culture plates was assessed with matrix-assisted laser desorption-ionization time-of-flight mass spectrometry (MALDI-TOF MS). A total of 84 fresh subgingival isolates from 23 chronic periodontitis patients were presumptively recognized on anaerobically-incubated enriched Brucella blood agar primary isolation plates as P. intermedia/nigrescens based on their dark-pigmented colony morphology, brick-red autofluorescence under long-wave ultraviolet light, and a negative fluorescence test for lactose production. The presumptive P. intermedia/nigrescens clinical isolates were subjected to MALDI-TOF MS analysis using Bruker MALDI Biotyper analytic software containing mass spectra for P. intermedia and Prevotella nigrescens in its reference library of bacterial protein profiles. Using a ≥1.7 log score agreement threshold, 60 (71.4%) of the presumptive P. intermedia/nigrescens clinical isolates were confirmed as either P. intermedia (25 isolates) or P. nigrescens (35 isolates). All isolates with a <1.7 log score were also identified as P. intermedia or P. nigrescens from the top choice designated on the MALDI Biotyper most likely species identification list. These MALDI-TOF MS findings document the ability of the phenotypic scheme to correctly recognize most periodontal P. intermedia/nigrescens group clinical isolates on primary isolation culture plates.
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Affiliation(s)
- Thomas E Rams
- Department of Periodontology and Oral Implantology, and Oral Microbiology Testing Service Laboratory, Temple University School of Dentistry, 3223 North Broad Street, Philadelphia, PA 19140 USA; Department of Microbiology and Immunology, Temple University School of Medicine, 3500 North Broad Street, Philadelphia, PA 19140 USA.
| | - Jacqueline D Sautter
- Department of Periodontology and Oral Implantology, and Oral Microbiology Testing Service Laboratory, Temple University School of Dentistry, 3223 North Broad Street, Philadelphia, PA 19140 USA
| | - Chinhua Y Hsiao
- Department of Periodontology and Oral Implantology, and Oral Microbiology Testing Service Laboratory, Temple University School of Dentistry, 3223 North Broad Street, Philadelphia, PA 19140 USA
| | - Arie J van Winkelhoff
- Center for Dentistry and Oral Hygiene, Department of Oral Microbiology, University Medical Center Groningen, University of Groningen, Antonius Deusinglaan 1, 9713 AV Groningen, The Netherlands; Department of Medical Microbiology, University Medical Center Groningen, University of Groningen, Hanzeplein 1, 9713 GZ Groningen, The Netherlands
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16
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Feres M, Louzoun Y, Haber S, Faveri M, Figueiredo LC, Levin L. Support vector machine-based differentiation between aggressive and chronic periodontitis using microbial profiles. Int Dent J 2018; 68:39-46. [DOI: 10.1111/idj.12326] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
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17
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Morales A, Gandolfo A, Bravo J, Carvajal P, Silva N, Godoy C, Garcia-Sesnich J, Hoare A, Diaz P, Gamonal J. Microbiological and clinical effects of probiotics and antibiotics on nonsurgical treatment of chronic periodontitis: a randomized placebo- controlled trial with 9-month follow-up. J Appl Oral Sci 2018; 26:e20170075. [PMID: 29364340 PMCID: PMC5777419 DOI: 10.1590/1678-7757-2017-0075] [Citation(s) in RCA: 51] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2017] [Accepted: 06/26/2017] [Indexed: 01/22/2023] Open
Abstract
Objective The aim of this double-blind, placebo-controlled and parallel- arm randomized clinical trial was to evaluate the effects of Lactobacillus rhamnosus SP1-containing probiotic sachet and azithromycin tablets as an adjunct to nonsurgical therapy in clinical parameters and in presence and levels of Tannerella forsythia, Porphyromonas gingivalis and Aggregatibacter actinomycetemcomitans. Material and Methods Forty-seven systemically healthy volunteers with chronic periodontitis were recruited and monitored clinically and microbiologically at baseline for 3, 6 and 9 months after therapy. Subgingival plaque samples were collected from four periodontal sites with clinical attachment level ≥1 mm, probing pocket depth ≥4 mm and bleeding on probing, one site in each quadrant. Samples were cultivated and processed using the PCR technique. Patients received nonsurgical therapy including scaling and root planing (SRP) and were randomly assigned to a probiotic (n=16), antibiotic (n = 16) or placebo (n = 15) group. L. rhamnosus SP1 was taken once a day for 3 months. Azithromycin 500mg was taken once a day for 5 days. Results All groups showed improvements in clinical and microbiological parameters at all time points evaluated. Probiotic and antibiotic groups showed greater reductions in cultivable microbiota compared with baseline. The placebo group showed greater reduction in number of subjects with P. gingivalis compared with baseline. However, there were no significant differences between groups. Conclusions The adjunctive use of L. rhamnosus SP1 sachets and azithromycin during initial therapy resulted in similar clinical and microbiological improvements compared with the placebo group.
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Affiliation(s)
- Alicia Morales
- Universidad de Chile, Facultad de Odontología, Departamento de Odontología Conservadora, Laboratorio de Biología Periodontal, Chile
| | - Alessandro Gandolfo
- Universidad de Chile, Facultad de Odontología, Departamento de Odontología Conservadora, Laboratorio de Biología Periodontal, Chile
| | - Joel Bravo
- Universidad de Antofagasta, Facultad de Odontología, Departamento de Odontología, Chile
| | - Paola Carvajal
- Universidad de Chile, Facultad de Odontología, Departamento de Odontología Conservadora, Laboratorio de Biología Periodontal, Chile
| | - Nora Silva
- Universidad de Chile, Facultad de Odontología, Departamento de Medicina y Patología Oral, Laboratorio de Microbiología, Chile
| | - Claudia Godoy
- Universidad de Chile, Facultad de Odontología, Departamento de Odontología Conservadora, Laboratorio de Biología Periodontal, Chile
| | - Jocelyn Garcia-Sesnich
- Universidad de Chile, Facultad de Odontología, Departamento de Odontología Conservadora, Laboratorio de Biología Periodontal, Chile
| | - Anilei Hoare
- Division of Periodontology, Department of Oral Health and Diagnostic Sciences, The University of Connecticut Health Center, Farmington, Connecticut, United States of America
| | - Patricia Diaz
- Division of Periodontology, Department of Oral Health and Diagnostic Sciences, The University of Connecticut Health Center, Farmington, Connecticut, United States of America
| | - Jorge Gamonal
- Universidad de Chile, Facultad de Odontología, Departamento de Odontología Conservadora, Laboratorio de Biología Periodontal, Chile
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18
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Elamin A, Ali RW, Bakken V. Putative periodontopathic bacteria and herpes viruses interactions in the subgingival plaque of patients with aggressive periodontitis and healthy controls. Clin Exp Dent Res 2017; 3:183-190. [PMID: 29744199 PMCID: PMC5839261 DOI: 10.1002/cre2.80] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2017] [Revised: 08/14/2017] [Accepted: 08/16/2017] [Indexed: 12/17/2022] Open
Abstract
The microbial profile of aggressive periodontitis patients is considered to be complex with variations among populations in different geographical areas. The aim of this study was to assess the presences of 4 putative periodontopathic bacteria (Aggregatibacter actinomycetemcomitans, Porphyromonas gingivalis, Tannerella forsythia, and Treponema denticola) and 2 periodontal herpes viruses (Epstein-Barr virus type 1 [EBV-1] and human cytomegalovirus [HMCV]) in subgingival plaque of Sudanese subjects with aggressive periodontitis and healthy controls. The study group consisted of 34 subjects, 17 aggressive periodontitis patients and 17 periodontally healthy controls (14-19 years of age). Pooled subgingival plaque samples were collected and analyzed for detection of bacteria and viruses using loop-mediated isothermal amplification. Prevalence of subgingival A. actinomycetemcomitans, HCMV, and P. gingivalis were significantly higher among aggressive periodontitis patients than periodontally healthy controls. Coinfection with A. actinomycetemcomitans, HCMV, and/or EBV-1 was restricted to the cases. Increased risk of aggressive periodontitis was the highest when A. actinomycetemcomitans was detected together with EBV-1 (OD 49.0, 95% CI [2.5, 948.7], p = .01) and HCMV (OD 39.1, 95% CI [2.0, 754.6], p = .02). In Sudanese patients, A. actinomycetemcomitans and HCMV were the most associated test pathogens with aggressive periodontitis.
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Affiliation(s)
- Amal Elamin
- Department of Health Sciences, College of Natural and Health SciencesZayed UniversityDubaiUAE
- Department of Clinical ScienceUniversity of BergenBergenNorway
| | - Raouf Wahab Ali
- Department of PeriodontologyUniversity of Science and TechnologyOmdurmanSudan
| | - Vidar Bakken
- Department of Clinical ScienceUniversity of BergenBergenNorway
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19
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Yussif NM, Hosny MM. Towards the targeted management of aggressive periodontitis. Med Hypotheses 2017; 103:124-127. [PMID: 28571797 DOI: 10.1016/j.mehy.2017.04.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2016] [Revised: 03/23/2017] [Accepted: 04/21/2017] [Indexed: 11/18/2022]
Affiliation(s)
- Nermin M Yussif
- Oral Diagnosis, Medicine & Periodontology Dept., Faculty of Oral & Dental Medicine, Cairo University, Giza, Egypt.
| | - Manal M Hosny
- Oral Diagnosis, Medicine & Periodontology Dept., Faculty of Oral & Dental Medicine, Cairo University, Giza, Egypt.
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20
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Feres M, Figueiredo LC, Soares GMS, Faveri M. Systemic antibiotics in the treatment of periodontitis. Periodontol 2000 2017; 67:131-86. [PMID: 25494600 DOI: 10.1111/prd.12075] [Citation(s) in RCA: 137] [Impact Index Per Article: 19.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/22/2014] [Indexed: 12/12/2022]
Abstract
Despite the fact that several clinical studies have shown additional benefits when certain systemic antibiotics are used as adjuncts to periodontal treatment, clear guidelines for the use of these agents in the clinical practice are not yet available. Basic questions concerning the use of systemic antibiotics to treat periodontitis remain unanswered, such as: which drug(s) should be used; which patients would most benefit from treatment; which are the most effective protocols (i.e. doses and durations); and in which phase of the mechanical therapy should the drug(s) be administered? Although not all of those questions have been directly addressed by controlled randomized clinical trials, recent concepts related to the ecology of periodontal diseases, as well as the major advances in laboratory and clinical research methods that have occurred in the past decade, have significantly broadened our knowledge in this field. This article endeavored to provide a 'state of the art' overview on the use of systemic antibiotics in the treatment of periodontitis, based on the most recent literature on the topic as well as on a compilation of data from studies conducted at the Center of Clinical Trials at Guarulhos University (São Paulo, Brazil) from 2002 to 2012.
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21
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Okada A, Sogabe K, Takeuchi H, Okamoto M, Nomura Y, Hanada N. Characterization of specimens obtained by different sampling methods for evaluation of periodontal bacteria. J Oral Sci 2017; 59:491-498. [DOI: 10.2334/josnusd.16-0573] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
Affiliation(s)
- Ayako Okada
- Department of Translational Research, School of Dental Medicine, Tsurumi University
| | - Kaoru Sogabe
- Department of Translational Research, School of Dental Medicine, Tsurumi University
| | - Hiroaki Takeuchi
- Department of Translational Research, School of Dental Medicine, Tsurumi University
| | - Masaaki Okamoto
- Department of Translational Research, School of Dental Medicine, Tsurumi University
| | - Yoshiaki Nomura
- Department of Translational Research, School of Dental Medicine, Tsurumi University
| | - Nobuhiro Hanada
- Department of Translational Research, School of Dental Medicine, Tsurumi University
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22
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Al-Ahmad A, Walankiewicz A, Hellwig E, Follo M, Tennert C, Wittmer A, Karygianni L. Photoinactivation Using Visible Light Plus Water-Filtered Infrared-A (vis+wIRA) and Chlorine e6 (Ce6) Eradicates Planktonic Periodontal Pathogens and Subgingival Biofilms. Front Microbiol 2016; 7:1900. [PMID: 27965635 PMCID: PMC5124645 DOI: 10.3389/fmicb.2016.01900] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2016] [Accepted: 11/14/2016] [Indexed: 12/15/2022] Open
Abstract
Alternative treatment methods for pathogens and microbial biofilms are required due to the widespread rise in antibiotic resistance. Antimicrobial photodynamic therapy (aPDT) has recently gained attention as a novel method to eradicate pathogens. The aim of this study was to evaluate the antimicrobial effects of a novel aPDT method using visible light (vis) and water infiltrated infrared A (wIRA) in combination with chlorine e6 (Ce6) against different periodontal pathogens in planktonic form and within in situ subgingival oral biofilms. Eight different periodontal pathogens were exposed to aPDT using vis+wIRA and 100 μg/ml Ce6 in planktonic culture. Additionally, pooled subgingival dental biofilm was also treated by aPDT and the number of viable cells determined as colony forming units (CFU). Live/dead staining was used in combination with confocal laser scanning microscopy to visualize and quantify antimicrobial effects within the biofilm samples. Untreated negative controls as well as 0.2% chlorhexidine-treated positive controls were used. All eight tested periodontal pathogens including Aggregatibacter actinomycetemcomitans, Porphyromonas gingivalis, Eikenella corrodens, Actinomyces odontolyticus, Fusobacterium nucleatum, Parvimonas micra, Slackia exigua, and Atopobium rimae and the aPDT-treated subgingival biofilm were eliminated over the ranges of 3.43–8.34 and 3.91–4.28 log10 CFU in the log10 scale, respectively. Thus, aPDT showed bactericidal effects on the representative pathogens as well as on the in situ subgingival biofilm. The live/dead staining also revealed a significant reduction (33.45%) of active cells within the aPDT-treated subgingival biofilm. Taking the favorable tissue healing effects of vis+wIRA into consideration, the significant antimicrobial effects revealed in this study highlight the potential of aPDT using this light source in combination with Ce6 as an adjunctive method to treat periodontitis as well as periimplantitis. The present results encourage also the evaluation of this method for the treatment of caries and apical periodontitis.
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Affiliation(s)
- Ali Al-Ahmad
- Department of Operative Dentistry and Periodontology, Center for Dental Medicine, Albert Ludwigs University of Freiburg Freiburg, Germany
| | - Aleksander Walankiewicz
- Department of Operative Dentistry and Periodontology, Center for Dental Medicine, Albert Ludwigs University of Freiburg Freiburg, Germany
| | - Elmar Hellwig
- Department of Operative Dentistry and Periodontology, Center for Dental Medicine, Albert Ludwigs University of Freiburg Freiburg, Germany
| | - Marie Follo
- Department of Medicine I, Medical Center, Faculty of Medicine, Albert Ludwigs University of Freiburg Freiburg, Germany
| | - Christian Tennert
- Department of Operative Dentistry and Periodontology, Center for Dental Medicine, Albert Ludwigs University of Freiburg Freiburg, Germany
| | - Annette Wittmer
- Institute of Medical Microbiology and Hygiene, Albert Ludwigs University of Freiburg Freiburg, Germany
| | - Lamprini Karygianni
- Department of Operative Dentistry and Periodontology, Center for Dental Medicine, Albert Ludwigs University of Freiburg Freiburg, Germany
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23
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Kim S, Park MH, Song YR, Na HS, Chung J. Aggregatibacteractinomycetemcomitans-Induced AIM2 Inflammasome Activation Is Suppressed by Xylitol in Differentiated THP-1 Macrophages. J Periodontol 2016; 87:e116-26. [DOI: 10.1902/jop.2016.150477] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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24
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Involvement of luxS in Biofilm Formation by Capnocytophaga ochracea. PLoS One 2016; 11:e0147114. [PMID: 26800339 PMCID: PMC4723239 DOI: 10.1371/journal.pone.0147114] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2014] [Accepted: 12/29/2015] [Indexed: 11/19/2022] Open
Abstract
Capnocytophaga ochracea is present in the dental plaque biofilm of patients with periodontitis. Biofilm cells change their phenotype through quorum sensing in response to fluctuations in cell-population density. Quorum sensing is mediated by auto-inducers (AIs). AI-2 is involved in intercellular signaling, and production of its distant precursor is catalyzed by LuxS, an enzyme involved in the activated methyl cycle. Our aim was to clarify the role of LuxS in biofilm formation by C. ochracea. Two luxS-deficient mutants, TmAI2 and LKT7, were constructed from C. ochracea ATCC 27872 by homologous recombination. The mutants produced significantly less AI-2 than the wild type. The growth rates of these mutants were similar to that of the wild-type in both undiluted Tryptic soy broth and 0.5 × Tryptic soy broth. However, according to crystal violet staining, they produced significantly less biofilm than the wild type. Confocal laser scanning microscopy and scanning electron microscopy showed that the biofilm of the TmAI2 strain had a rougher structure than that of the wild type. Complementation of TmAI-2 with extrinsic AI-2 from the culture supernatant of wild-type strain did not restore biofilm formation by the TmAI2 strain, but complementation of LKT7 strain with luxS partially restored biofilm formation. These results indicate that LuxS is involved in biofilm formation by C. ochracea, and that the attenuation of biofilm formation by the mutants is likely caused by a defect in the activated methyl cycle rather than by a loss of AI-2.
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25
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Abstract
A paradigm shift several decades ago elucidated that aggressive periodontitis (AgP) was not a degenerative disorder but a rapid progressive form of plaque-induced inflammatory periodontal disease. Ensuing years of research have led to linkage analysis identification of specific genetic defects responsible for AgP in some families and to the finding that subgingival detection of A. actinomycet-emcomitans JP2 clone is a predictive factor for disease onset and progression. However, rather disappointingly, these ‘proven’ risk factors are only detected in a small subset of AgP cases. Recent advances are leading to a new paradigm shift, with the realization that genetically-driven dysbiotic changes in the subgingival microbiota may predispose to a cascade of events leading to the rapid periodontal tissue destruction seen in AgP. This review tries to dissect the existing literature on the host response-microbial axis of AgP and to propose possible pathogenic pathways in line with current theories.
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Affiliation(s)
- Luigi Nibali
- a Periodontology Unit and Department of Clinical Research; UCL Eastman Dental Institute ; London , UK
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26
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Ito S, Hagiya H, Kimura K, Nishi I, Yoshida H, Kioka H, Ohtani T, Yamaguchi O, Tanabe K, Tomono K, Sakata Y. Capnocytophaga ochracea-related Bacterium Bacteremia in a Hypertrophic Cardiomyopathy Patient without Neutropenia. Intern Med 2016; 55:2731-5. [PMID: 27629977 DOI: 10.2169/internalmedicine.55.6593] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Gram-negative fusiform rods were detected in a blood culture obtained from a 63-year-old man who had been hospitalized for a long duration for severe heart failure. Although the organism could not be identified using a conventional method, it was finally identified as a bacterium of the Capnocytophaga ochracea group based on the results of biochemical testing, 16S rRNA sequencing and a matrix-assisted laser desorption ionization time-of-flight mass spectrometry analysis. Although neutropenic patients with poor oral hygiene are exclusively vulnerable to Capnocytophaga bacteremia, this case was unique because such predisposing conditions were not noted. A multi-centered investigation is warranted for a better understanding of this clinically rare, but potentially pathogenic organism.
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Affiliation(s)
- Shimpei Ito
- Department of Cardiovascular Medicine, Osaka University Graduate School of Medicine, Japan
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27
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Martinez-Canut P. Predictors of tooth loss due to periodontal disease in patients following long-term periodontal maintenance. J Clin Periodontol 2015; 42:1115-25. [PMID: 26498672 PMCID: PMC4737315 DOI: 10.1111/jcpe.12475] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/17/2015] [Indexed: 12/03/2022]
Abstract
AIM To analyse patient-related factors (PRFs) and tooth-related factors (TRFs) associated with tooth loss due to periodontal disease (TLPD) in patients undergoing periodontal maintenance (PM). MATERIAL AND METHODS The sample consisted of 500 patients (mean follow-up of 20 years). The impact of PRFs on TLPD was analysed with Poisson regression and multivariate logistic regression. The simultaneous impact of PRFs and TRFs was analysed with multilevel logistic regression and Cox regression. RESULTS Tooth loss due to periodontal disease was 515 (mean 0.05 patient/year). The significant PRFs were severe periodontitis (p < 0.001), aggressive periodontitis (p < 0.001), smoking (p = 0.018), bruxism (p = 0.022) and baseline number of teeth (p = 0.001). These PRFs allowed characterizing patients losing more teeth. The whole TRFs analysed were significant, depending on the type of tooth and the category of each factor (e.g. mobility 0, 1, 2, and 3). The significant PRFs increased the risk of TLPD by 2 to 3 times while TRFs increased the risk to a higher extent. Mobility was the main TRF. CONCLUSIONS Severe periodontitis, aggressive periodontitis, smoking, bruxism and baseline number of teeth, as well as the whole TRFs analysed, were associated with TLPD.
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Affiliation(s)
- Pedro Martinez-Canut
- Department and institutions, Private practice, Valencia, Spain
- Former Director, Division of Periodontics, Facultad de Medicina y Odontología, University of Valencia, Valencia, Spain
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28
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Silva N, Abusleme L, Bravo D, Dutzan N, Garcia-Sesnich J, Vernal R, Hernández M, Gamonal J. Host response mechanisms in periodontal diseases. J Appl Oral Sci 2015. [PMID: 26221929 PMCID: PMC4510669 DOI: 10.1590/1678-775720140259] [Citation(s) in RCA: 246] [Impact Index Per Article: 27.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Periodontal diseases usually refer to common inflammatory disorders known as gingivitis and periodontitis, which are caused by a pathogenic microbiota in the subgingival biofilm, including Porphyromonas gingivalis, Aggregatibacter actinomycetemcomitans, Tannerella forsythia and Treponema denticola that trigger innate, inflammatory, and adaptive immune responses. These processes result in the destruction of the tissues surrounding and supporting the teeth, and eventually in tissue, bone and finally, tooth loss. The innate immune response constitutes a homeostatic system, which is the first line of defense, and is able to recognize invading microorganisms as non-self, triggering immune responses to eliminate them. In addition to the innate immunity, adaptive immunity cells and characteristic cytokines have been described as important players in the periodontal disease pathogenesis scenario, with a special attention to CD4+ T-cells (T-helper cells). Interestingly, the T cell-mediated adaptive immunity development is highly dependent on innate immunity-associated antigen presenting cells, which after antigen capture undergo into a maturation process and migrate towards the lymph nodes, where they produce distinct patterns of cytokines that will contribute to the subsequent polarization and activation of specific T CD4+ lymphocytes. Skeletal homeostasis depends on a dynamic balance between the activities of the bone-forming osteoblasts (OBLs) and bone-resorbing osteoclasts (OCLs). This balance is tightly controlled by various regulatory systems, such as the endocrine system, and is influenced by the immune system, an osteoimmunological regulation depending on lymphocyte- and macrophage-derived cytokines. All these cytokines and inflammatory mediators are capable of acting alone or in concert, to stimulate periodontal breakdown and collagen destruction via tissue-derived matrix metalloproteinases, a characterization of the progression of periodontitis as a stage that presents a significantly host immune and inflammatory response to the microbial challenge that determine of susceptibility to develop the destructive/progressive periodontitis under the influence of multiple behavioral, environmental and genetic factors.
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Affiliation(s)
- Nora Silva
- Department of Pathology, Faculty of Dentistry, University of Chile, Santiago, Chile
| | - Loreto Abusleme
- Department of Pathology, Faculty of Dentistry, University of Chile, Santiago, Chile
| | - Denisse Bravo
- Department of Pathology, Faculty of Dentistry, University of Chile, Santiago, Chile
| | - Nicolás Dutzan
- Department of Conservative Dentistry, Faculty of Dentistry, University of Chile, Santiago, Chile
| | - Jocelyn Garcia-Sesnich
- Department of Conservative Dentistry, Faculty of Dentistry, University of Chile, Santiago, Chile
| | - Rolando Vernal
- Department of Conservative Dentistry, Faculty of Dentistry, University of Chile, Santiago, Chile
| | - Marcela Hernández
- Department of Pathology, Faculty of Dentistry, University of Chile, Santiago, Chile
| | - Jorge Gamonal
- Department of Conservative Dentistry, Faculty of Dentistry, University of Chile, Santiago, Chile
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Abstract
For decades, Aggregatibacter actinomycetemcomitans has been considered the most likely etiologic agent in aggressive periodontitis. Implementation of DNA-based microbiologic methodologies has considerably improved our understanding of the composition of subgingival biofilms, and advanced open-ended molecular techniques even allow for genome mapping of the whole bacterial spectrum in a sample and characterization of both the cultivable and not-yet-cultivable microbiota associated with periodontal health and disease. Currently, A. actinomycetemcomitans is regarded as a minor component of the resident oral microbiota and as an opportunistic pathogen in some individuals. Its specific JP2 clone, however, shows properties of a true exogenous pathogen and has an important role in the development of aggressive periodontitis in certain populations. Still, limited data exist on the impact of other microbes specifically in aggressive periodontitis. Despite a wide heterogeneity of bacteria, especially in subgingival samples collected from patients, bacteria of the red complex in particular, and those of the orange complex, are considered as potential pathogens in generalized aggressive periodontitis. These types of bacterial findings closely resemble those found for chronic periodontitis, representing a mixed polymicrobial infection without a clear association with any specific microorganism. In aggressive periodontitis, the role of novel and not-yet-cultivable bacteria has not yet been elucidated. There are geographic and ethnic differences in the carriage of periodontitis-associated microorganisms, and they need to be taken into account when comparing study reports on periodontal microbiology in different study populations. In the present review, we provide an overview on the colonization of potential periodontal pathogens in childhood and adolescence, and on specific microorganisms that have been suspected for their role in the initiation and progression of aggressive forms of periodontal disease.
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30
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Monteiro MDF, Casati MZ, Taiete T, do Vale HF, Nociti FH, Sallum EA, Silvério KG, Casarin RCV. Periodontal clinical and microbiological characteristics in healthyversusgeneralized aggressive periodontitis families. J Clin Periodontol 2015; 42:914-21. [DOI: 10.1111/jcpe.12459] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/07/2015] [Indexed: 01/20/2023]
Affiliation(s)
| | - Marcio Z. Casati
- Division of Periodontics; State University of Campinas; Piracicaba São Paulo Brazil
| | - Tiago Taiete
- Division of Periodontics; State University of Campinas; Piracicaba São Paulo Brazil
| | - Hugo F. do Vale
- Division of Periodontics; State University of Campinas; Piracicaba São Paulo Brazil
| | | | | | - Karina G. Silvério
- Division of Periodontics; State University of Campinas; Piracicaba São Paulo Brazil
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31
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Periodontal pathogens and tetracycline resistance genes in subgingival biofilm of periodontally healthy and diseased Dominican adults. Clin Oral Investig 2015; 20:349-56. [PMID: 26121972 PMCID: PMC4762914 DOI: 10.1007/s00784-015-1516-2] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2014] [Accepted: 06/16/2015] [Indexed: 01/12/2023]
Abstract
Objective The objective of this study was to compare the periodontopathogen prevalence and tetracycline resistance genes in Dominican patients with different periodontal conditions. Methods Seventy-seven samples were collected from healthy, gingivitis, chronic (CP) and aggressive (AgP) periodontitis patients. Porphyromonas gingivalis, Treponema denticola, Tannerella forsythia, Aggregatibacter actinomycetemcomitans, Fusobacterium nucleatum, Prevotella intermedia, Parvimonas micra, Eikenella corrodens and Dialister pneumosintes and 11 resistance genes were studied by PCR. P. gingivalis fimA genotype was determined. Results In healthy patients, P. micra and P. intermedia were the most and least frequently detected, respectively. T. forsythia and E. corrodens appeared in 100 % of gingivitis patients. Red complex, D. pneumosintes and E. corrodens were significantly more prevalent in CP compared to healthy patients. F. nucleatum and T. denticola were detected more frequently in AgP. A. actinomycetemcomitans was the most rarely observed in all groups. The fimA II genotype was the most prevalent in periodontitis patients. Seven tetracycline-resistant genes were detected. tet(Q), tet(32) and tet(W) showed the greatest prevalence. tet(32) was significantly more prevalent in CP than in healthy patients. Conclusions Red complex bacteria and D. pneumosintes were significantly the most prevalent species among periodontitis patients. T. forsythia was the most frequently detected in this population. To our knowledge, this is the first study describing the tet(32) gene in subgingival biofilm from healthy and periodontally diseased subjects. Clinical relevance This study contributes to the knowledge on the subgingival microbiota and its resistance genes of a scarcely studied world region. Knowing the prevalence of resistance genes could impact on their clinical prescription and could raise awareness to the appropriate use of antibiotics. Electronic supplementary material The online version of this article (doi:10.1007/s00784-015-1516-2) contains supplementary material, which is available to authorized users.
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Chahboun H, Arnau MM, Herrera D, Sanz M, Ennibi OK. Bacterial profile of aggressive periodontitis in Morocco: a cross-sectional study. BMC Oral Health 2015; 15:25. [PMID: 25888404 PMCID: PMC4367901 DOI: 10.1186/s12903-015-0006-x] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2014] [Accepted: 02/09/2015] [Indexed: 01/08/2023] Open
Abstract
Background Aggressive periodontitis (AgP) is one of the most severe forms of periodontal diseases. In Morocco, Aggregatibacter actinomycetemcomitans has been strongly associated with AgP, however limited knowledge is available about the implication of other periodontal pathogens in this entity. Therefore, the main aim of this study was to evaluate the composition of the subgingival microbiota in Moroccan patients with AgP. Methods Subgingival plaque samples were collected from 50 aggressive, 13 localized and 37 generalized periodontitis patients. Samples from 20 chronic periodontitis (ChP) patients were taken as controls. Samples collected from the four deepest periodontal pockets in each patient were pooled in pre-reduced transport fluid and examined by culture. Results A. actinomycetemcomitans was significantly more frequent (p = 0.004) in generalised AgP compared to ChP, and Porphyromonas gingivalis was less prevalent in localized AgP, when compared with generalized AgP (p = 0.040) or ChP (p = 0.016). Prevotella intermedia, Fusobacterium nucleatum and Tannerella forsythia were also frequently detected in all groups. Mean proportions of A. actinomycetemcomitans were significantly higher in AgP groups, when compared to ChP, and generalized AgP patients harbored significantly higher proportions of P. gingivalis and T. forsythia, when compared to localized AgP or ChP. Conclusions A. actinomycetemcomitans, P. gingivalis, T. forsythia, P. intermedia and F. nucleatum were frequently detected in this Moroccan population with AgP. Differences in frequency of detection, counts and proportions of A. actinomycetemcomitans, P. gingivalis and T. forsythia suggests the presence of distinct microbiological profiles for localized AgP, generalized AgP and ChP patients.
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Affiliation(s)
- Hanane Chahboun
- EREB (Research Group of Oral Ecosystem), Faculty of Medicine Dentistry, Mohammed V University, Rabat, Morocco.
| | - Maria Minguez Arnau
- ETEP (Etiology and Therapy of Periodontal Diseases) Research Group, Faculty of Dentistry, University Complutense, Madrid, Spain.
| | - David Herrera
- ETEP (Etiology and Therapy of Periodontal Diseases) Research Group, Faculty of Dentistry, University Complutense, Madrid, Spain.
| | - Mariano Sanz
- ETEP (Etiology and Therapy of Periodontal Diseases) Research Group, Faculty of Dentistry, University Complutense, Madrid, Spain.
| | - Oum Keltoum Ennibi
- EREB (Research Group of Oral Ecosystem), Faculty of Medicine Dentistry, Mohammed V University, Rabat, Morocco.
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Díaz L, Hoare A, Soto C, Bugueño I, Silva N, Dutzan N, Venegas D, Salinas D, Pérez-Donoso JM, Gamonal J, Bravo D. Changes in lipopolysaccharide profile of Porphyromonas gingivalis clinical isolates correlate with changes in colony morphology and polymyxin B resistance. Anaerobe 2015; 33:25-32. [PMID: 25638398 DOI: 10.1016/j.anaerobe.2015.01.009] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2014] [Revised: 01/19/2015] [Accepted: 01/27/2015] [Indexed: 01/19/2023]
Abstract
Virulence factors on the surface of Porphyromonas gingivalis constitute the first line of interaction with host cells and contribute to immune modulation and periodontitis progression. In order to characterize surface virulence factors present on P. gingivalis, we obtained clinical isolates from healthy and periodontitis subjects and compared them with reference strains. Colony morphology, aggregation in liquid medium, surface charge, membrane permeability to bactericidal compounds, novobiocin and polymyxin B resistance, capsule presence and lipopolysaccharide (LPS) profiles were evaluated. By comparing isolates from healthy and periodontitis subjects, differences in colony morphology and aggregation in liquid culture were found; the latter being similar to two reference strains. These differences were not a consequence of variations in bacterial surface charge. Furthermore, isolates also presented differences in polymyxin B and novobiocin resistance; isolates from healthy subjects were susceptible to polymyxin B and resistant to novobiocin and, in contrast, isolates from periodontitis subjects were resistant to polymyxin B and susceptible to novobiocin. These changes in antimicrobial resistance levels correlate with variations in LPS profiles, since -unlike periodontitis isolates-isolates from healthy samples synthesize LPS molecules lacking both O-antigen moieties and anionic polysaccharide. Additionally, this phenotype correlated with the absence of O-antigen ligase activity. Altogether, our results reveal novel variations on surface components of P. gingivalis isolates obtained from healthy and periodontitis subjects that could be associated with differences in bacterial virulence and periodontitis progression.
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Affiliation(s)
- Leonor Díaz
- Oral Microbiology Laboratory, Pathology and Oral Medicine Department, Faculty of Dentistry, Universidad de Chile, Santiago, Chile; Laboratory of Periodontal Biology, Conservative Dentistry Department, Faculty of Dentistry, Universidad de Chile, Santiago, Chile
| | - Anilei Hoare
- Oral Microbiology Laboratory, Pathology and Oral Medicine Department, Faculty of Dentistry, Universidad de Chile, Santiago, Chile; Laboratory of Periodontal Biology, Conservative Dentistry Department, Faculty of Dentistry, Universidad de Chile, Santiago, Chile
| | - Cristopher Soto
- Oral Microbiology Laboratory, Pathology and Oral Medicine Department, Faculty of Dentistry, Universidad de Chile, Santiago, Chile
| | - Isaac Bugueño
- Oral Microbiology Laboratory, Pathology and Oral Medicine Department, Faculty of Dentistry, Universidad de Chile, Santiago, Chile
| | - Nora Silva
- Oral Microbiology Laboratory, Pathology and Oral Medicine Department, Faculty of Dentistry, Universidad de Chile, Santiago, Chile
| | - Nicolás Dutzan
- Laboratory of Periodontal Biology, Conservative Dentistry Department, Faculty of Dentistry, Universidad de Chile, Santiago, Chile
| | - Darna Venegas
- Oral Microbiology Laboratory, Pathology and Oral Medicine Department, Faculty of Dentistry, Universidad de Chile, Santiago, Chile
| | - Daniela Salinas
- Oral Microbiology Laboratory, Pathology and Oral Medicine Department, Faculty of Dentistry, Universidad de Chile, Santiago, Chile
| | - José Manuel Pérez-Donoso
- BioNanotechnology and Microbiology Laboratory, Center for Bioinformatics and Integrative Biology (CBIB), Faculty of Biological Sciences, Universidad Andres Bello, Santiago, Chile
| | - Jorge Gamonal
- Laboratory of Periodontal Biology, Conservative Dentistry Department, Faculty of Dentistry, Universidad de Chile, Santiago, Chile
| | - Denisse Bravo
- Oral Microbiology Laboratory, Pathology and Oral Medicine Department, Faculty of Dentistry, Universidad de Chile, Santiago, Chile.
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Contreras A, Moreno SM, Jaramillo A, Pelaez M, Duque A, Botero JE, Slots J. Periodontal microbiology in Latin America. Periodontol 2000 2014; 67:58-86. [DOI: 10.1111/prd.12074] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/14/2014] [Indexed: 12/19/2022]
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Oettinger-Barak O, Sela MN, Sprecher H, Machtei EE. Clinical and microbiological characterization of localized aggressive periodontitis: a cohort study. Aust Dent J 2014; 59:165-71. [PMID: 24861390 DOI: 10.1111/adj.12165] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/20/2013] [Indexed: 10/25/2022]
Abstract
BACKGROUND Localized aggressive periodontitis (LAgP) is an infectious periodontal disease which generally affects young people. Recent data suggest the involvement of different bacterial species in different populations. The causative bacterial species in Israel has never been identified despite a high prevalence of LAgP in this population. The objectives of this study were to characterize the bacterial microbiota of periodontal pockets within an Israeli LAgP population who were also clinically assessed. METHODS Twenty-one LAgP patients (test) and 12 chronic periodontitis patients (control) were examined. Bacterial samples were collected from periodontal pockets and analysed by both culture and polymerase chain reaction techniques. Mann-Whitney U test and chi-square test were used to compare results between the groups. RESULTS Higher levels of Parvimonas micra (>10(6) ), Aggregatibacter actinomycetemcomitans (>10(5) ), Fusobacterium nucleatum/F. periodonticum (>10(6) ), and Tannerella forsythia (levels of 10(5) to 10(6) bacteria) were detected in the LAgP group compared to the control (p < 0.05), while levels of Porphyromonas gingivalis and Prevotella intermedia were higher in the CP group. CONCLUSIONS The characteristic periodontal bacterial flora of LAgP patients in Israel is mainly comprised of P. micra, A. actinomycetemcomitans, F. nucleatum/F. periodonticum and T. forsythia. Similar population based studies of each population will improve the quality of treatment of LAgP when individual sampling is not possible.
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Affiliation(s)
- O Oettinger-Barak
- Melbourne Dental School, The University of Melbourne, Parkville, Victoria, Australia; Oral Ecology and Microbiology, Faculty of Dental Medicine, The Hebrew University of Jerusalem, Israel
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Saraiva L, Rebeis ES, Martins EDS, Sekiguchi RT, Ando-Suguimoto ES, Mafra CES, Holzhausen M, Romito GA, Mayer MPA. IgG sera levels against a subset of periodontopathogens and severity of disease in aggressive periodontitis patients: a cross-sectional study of selected pocket sites. J Clin Periodontol 2014; 41:943-51. [DOI: 10.1111/jcpe.12296] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/22/2014] [Indexed: 12/17/2022]
Affiliation(s)
- Luciana Saraiva
- Department of Periodontology; Dental School; University of São Paulo; São Paulo SP Brazil
| | - Estela S. Rebeis
- Department of Periodontology; Dental School; University of São Paulo; São Paulo SP Brazil
| | - Eder de S. Martins
- Department of Periodontology; Dental School; University of São Paulo; São Paulo SP Brazil
| | - Ricardo T. Sekiguchi
- Department of Periodontology; Dental School; University of São Paulo; São Paulo SP Brazil
| | - Ellen S. Ando-Suguimoto
- Department of Microbiology; Institute of Biomedical Sciences; University of São Paulo; São Paulo SP Brazil
| | | | - Marinella Holzhausen
- Department of Periodontology; Dental School; University of São Paulo; São Paulo SP Brazil
| | - Giuseppe A. Romito
- Department of Periodontology; Dental School; University of São Paulo; São Paulo SP Brazil
| | - Marcia P. A. Mayer
- Department of Microbiology; Institute of Biomedical Sciences; University of São Paulo; São Paulo SP Brazil
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Haraguchi A, Miura M, Fujise O, Hamachi T, Nishimura F. Porphyromonas gingivalis gingipain is involved in the detachment and aggregation of Aggregatibacter actinomycetemcomitans biofilm. Mol Oral Microbiol 2014; 29:131-43. [PMID: 24661327 DOI: 10.1111/omi.12051] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/18/2014] [Indexed: 01/28/2023]
Abstract
Porphyromonas gingivalis and Aggregatibacter actinomycetemcomitans are major periodontal pathogens that cause several types of periodontal disease. Our previous study suggested that P. gingivalis gingipains secreted in the subgingival environment are related to the detachment of A.actinomycetemcomitans biofilms. However, it remains unclear whether arginine-specific cysteine proteinase (Rgp) and lysine-specific proteinase (Kgp) play different roles in the detachment of A. actinomycetemcomitans biofilm. The aim of this study was to investigate possible disruptive roles of Kgp and Rgp in the aggregation and attachment of A. actinomycetemcomitans. While P. gingivalis ATCC33277 culture supernatant has an ability to decrease autoaggregation and coaggregation of A. actinomycetemcomitans cells, neither the boiled culture supernatant of ATCC33277 nor the culture supernatant of KDP136 showed this ability. The addition of KYT-1 and KYT-36, specific inhibitors of Rgp and Kgp, respectively, showed no influence on the ability of P. gingivalis culture supernatant. The result of gelatin zymography suggested that other proteases processed by gingipains mediated the decrease of A. actinomycetemcomitans aggregations. We also examined the biofilm-destructive effect of gingipains by assessing the detachment of A. actinomycetemcomitans from polystyrene surfaces. Scanning electron microscope analysis indicated that A. actinomycetemcomitans cells were detached by P. gingivalis Kgp. The quantity of A. actinomycetemcomitans in biofilm was decreased in co-culture with P. gingivalis. However, this was not found after the addition of KYT-36. These findings suggest that Kgp is a critical component for the detachment and decrease of A. actinomycetemcomitans biofilms.
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Affiliation(s)
- A Haraguchi
- Division of Oral Rehabilitation, Department of Periodontology, Faculty of Dental Science, Kyushu University, Fukuoka, Japan
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Monteiro MF, Casati MZ, Taiete T, Sallum EA, Nociti FH, Ruiz KG, Casarin RCV. Salivary carriage of periodontal pathogens in generalized aggressive periodontitis families. Int J Paediatr Dent 2014; 24:113-21. [PMID: 23647376 DOI: 10.1111/ipd.12035] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
BACKGROUND Generalized aggressive periodontitis (GAP) is a multifactorial disease that shows a specific microbial profile and a familial aggregation. AIM This study evaluated the salivary microbial profile of families with a history of GAP and compared them with healthy families. DESIGN Fifteen families with parents presenting periodontal health and 15 with parents with a history of GAP were selected. Each family had a child aged 6-12 years. Stimulated saliva was collected from all subjects, and Porphyromonas gingivalis (Pg), Tannerella forsythia (Tf), and Aggregatibacter actinomycetemcomitans (Aa) amounts were determined. RESULTS Children of GAP families showed higher detection of Aa (90%) than children of healthy families (45%) (P < 0.05). Parents with GAP showed a Pg salivary concentration statistically higher than that of healthy parents (P < 0.05).Children of GAP families, however, exhibited similar Pg concentration than healthy children (P > 0.05). Tf amounts did not differ either in parents or in children (P > 0.05) The infection risk calculation indicates that children who have one parent who is positive for Aa have 16.3 times (95% CI 3.1-87.2) more risk of being infected with Aa (P < 0.05) than children from an Aa-negative family. CONCLUSION It may be concluded that children of parents with aggressive periodontitis have higher levels and higher risk of Aa infection.
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Affiliation(s)
- Mabelle Freitas Monteiro
- Department of Prosthodontics and Periodontics, School of Dentistry of Piracicaba, UNICAMP, Piracicaba, Brazil
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Feng X, Zhang L, Xu L, Meng H, Lu R, Chen Z, Shi D, Wang X. Detection of Eight Periodontal Microorganisms and Distribution ofPorphyromonas gingivalis fimAGenotypes in Chinese Patients With Aggressive Periodontitis. J Periodontol 2014; 85:150-9. [DOI: 10.1902/jop.2013.120677] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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Ghijselings E, Coucke W, Verdonck A, Teughels W, Quirynen M, Pauwels M, Carels C, van Gastel J. Long-term changes in microbiology and clinical periodontal variables after completion of fixed orthodontic appliances. Orthod Craniofac Res 2013; 17:49-59. [DOI: 10.1111/ocr.12031] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/09/2013] [Indexed: 12/20/2022]
Affiliation(s)
- E. Ghijselings
- Department of Oral Health Sciences - Orthodontics; KU Leuven & Dentistry, University Hospitals Leuven; Belgium
| | - W. Coucke
- Department of Orthodontics and Craniofacial Biology; Radboud University Nijmegen Medical Centre; Nijmegen The Netherlands
| | - A. Verdonck
- Department of Oral Health Sciences - Orthodontics; KU Leuven & Dentistry, University Hospitals Leuven; Belgium
| | - W. Teughels
- Department of Oral Health Sciences - Periodontology; KU Leuven & Dentistry, University Hospitals Leuven; Belgium
| | - M. Quirynen
- Department of Oral Health Sciences - Periodontology; KU Leuven & Dentistry, University Hospitals Leuven; Belgium
| | - M. Pauwels
- Department of Oral Health Sciences - Periodontology; KU Leuven & Dentistry, University Hospitals Leuven; Belgium
| | - C. Carels
- Department of Oral Health Sciences - Orthodontics; KU Leuven & Dentistry, University Hospitals Leuven; Belgium
- Department of Quality of Medical Laboratories; Scientific Institute of Public Health; Brussels Belgium
| | - J. van Gastel
- Department of Oral Health Sciences - Orthodontics; KU Leuven & Dentistry, University Hospitals Leuven; Belgium
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Ebrahem MA. Expression of human beta defensins (HBDs) 1, 2 and 3 in gingival crevicular fluid of patients affected by localized aggressive periodontitis. Saudi Dent J 2013; 25:75-82. [PMID: 23960559 DOI: 10.1016/j.sdentj.2013.02.004] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2012] [Revised: 11/28/2012] [Accepted: 02/05/2013] [Indexed: 12/24/2022] Open
Abstract
AIM To study the effect of nonsurgical periodontal therapy on the expression frequencies of human beta-defensin (HBD)-1, -2, and -3 in the gingival crevicular fluid (GCF) of patients affected by localized aggressive periodontitis. MATERIALS AND METHODS Twenty patients affected by localized aggressive periodontitis (age range, 20-35 years) and 20 healthy subjects (age range, 21-37 years) were examined with clinical periodontal parameters and radiographic examination with the long-cone parallel technique. All periodontitis patients underwent nonsurgical periodontal therapy combined with doxycycline treatment and a maintenance program (including brushing with regular toothpaste). GCF samples were collected from patients and healthy control subjects at baseline as well as 3 months after periodontal therapy for the patient group. RESULTS In the patient group, the expression frequencies of HBD-1, -2, and -3 mRNA at baseline were 30%, 85%, and 35%, respectively, which changed after periodontal therapy to 80%, 45%, and 85%, respectively (all P < 0.001). In the healthy control subjects, the expression frequencies were 95%, 40%, and 95% for HBD-1, -2, and -3, respectively, which were different from those of diseased patients at baseline (all P < 0.001). CONCLUSIONS The appropriate expression of HBD peptides in health and disease may contribute to the maintenance of periodontal homeostasis, possibly through its antimicrobial effects and the promotion of adaptive immune responses.
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Affiliation(s)
- Mohamed Abdelmoniem Ebrahem
- Department of Oral Medicine, Periodontology and Oral Diagnosis, Faculty of Dental Medicine, Minia University, Egypt
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Lü D, Meng H, Xu L, Lu R, Zhang L, Chen Z, Feng X, Shi D, Tian Y, Wang X. New attempts to modify periodontal risk assessment for generalized aggressive periodontitis: a retrospective study. J Periodontol 2013; 84:1536-45. [PMID: 23305112 DOI: 10.1902/jop.2013.120427] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
BACKGROUND Periodontal risk assessment (PRA) model was designed for risk evaluation of treated patients with periodontal disease. However, its use on generalized aggressive periodontitis (GAgP) had been scarcely reported. This study aims to investigate the association of original PRA/modified PRA (MPRA) and compliance of periodontal maintenance with long-term treatment outcomes of Chinese patients with GAgP. METHODS Eighty-eight patients from a GAgP cohort, who completed active periodontal treatment (APT) and accepted reevaluation 3 to 11 years (mean of 5.5 years) afterward, were enrolled. PRA was modified (three strategies involving replacement of bleeding on probing with bleeding index >2, counting sites with probing depth ≥6 mm and changing method of bone loss [BL] calculation) to classify patients into different risk groups based on data at the first recall after APT. PRA and three MPRA models were investigated regarding long-term association with tooth loss (TL) and alteration of bone level (∆BL). RESULTS Based on original PRA, 87 patients (98.8%) had a high-risk profile. According to three MPRA models, annual TL per patient values were greater in high-risk groups than in low-to-moderate risk groups (MPRA-1, 0.20 ± 0.33 versus 0.04 ± 0.14; MPRA-2, 0.18 ± 0.32 versus 0.05 ± 0.14; MPRA-3, 0.17 ± 0.32 versus 0.05 ± 0.15; P <0.05). By MPRA-1, irregular compliers with low-to-moderate risk profile had greater ∆BL (0.027 ± 0.031, indicating bone increment) than those with high risk (-0.012 ± 0.064, tendency for BL). For regular compliers, no significant differences of annual TL or ∆BL were found between risk groups. CONCLUSIONS MPRA models could be used for evaluating the long-term outcomes of Chinese patients with severe GAgP, especially irregular compliers. High-risk patients of MPRAs exhibited more TL and less bone fill than low-to-moderate risk ones.
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Affiliation(s)
- Da Lü
- Department of Periodontology, School and Hospital of Stomatology, Peking University, Beijing, China
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Nguyen-Hieu T. Microbial sampling process can change results of microbiological analysis in periodontitis diagnosis. A minireview. ACTA ACUST UNITED AC 2012. [PMID: 23188761 DOI: 10.1111/jicd.12010] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
This minireview aims to verify the supposition that the microbial sampling process can change results of microbiological analysis in periodontitis diagnosis. The literature search via Pubmed yielded 52 appropriate articles for analysis. Of which 38% (20/52) described that the sampling sites were isolated from saliva, whereas 62% (32/52) did not. Also, 29% (15/52) declared that the microbial sampling was performed before probing pocket depth (PPD), whereas 71% (37/52) did not. Comparison of the results of microbiological analysis in these studies showed that the bacteria most frequently detected in periodontal pockets was variable. Therefore, a sampling process that includes both the microbial sample being taken before PPD and saliva isolation of the sampling sites is needed to ensure the accuracy of microbiological analysis in periodontitis diagnosis.
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Affiliation(s)
- Tung Nguyen-Hieu
- Aix-Marseille Université, URMITE, UM63, CNRS 7278, IRD 198, Inserm 1095, Marseille, France.
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Shaddox LM, Huang H, Lin T, Hou W, Harrison PL, Aukhil I, Walker CB, Klepac-Ceraj V, Paster BJ. Microbiological characterization in children with aggressive periodontitis. J Dent Res 2012; 91:927-33. [PMID: 22863892 DOI: 10.1177/0022034512456039] [Citation(s) in RCA: 76] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022] Open
Abstract
UNLABELLED The objective of this study was to characterize the subgingival microbiota of African-American children with Localized Aggressive Periodontitis (LAP). Fifty-one children were included. Subgingival plaque samples were taken from diseased (DD) and healthy sites (DH) in LAP and from healthy sites in HS and HC and analyzed by 16S rRNA-based microarrays. Aggregatibacter actinomycetemcomitans (Aa) was the only species found to be both more prevalent (OR = 8.3, p = 0.0025) and abundant (p < 0.01) in DD. Filifactor alocis (Fa) was also found to be more prevalent in DD (OR 2.31, CI 1.06-5.01, p = 0.03). Most prevalent species in healthy sites were Selenomonas spp, Veillonella spp, Streptococcus spp, Bergeyella sp, and Kingella oralis. Overall, Streptococcus spp, Campylobacter gracilis, Capnocytophaga granulosa, Haemophilus parainfluenzae, and Lautropia mirabilis were most abundant in healthy children, while Aa, Fa, Tannerella sp, Solobacterium moorei, Parvimonas micra, and Capnocytophaga sp were most abundant in LAP. Based on a comprehensive analysis with 16S rRNA-based microarrays, Aa was strongly associated and site-specific in LAP. In contrast, other species were found to be associated with healthy sites and individuals (ClinicalTrials.gov number CT01330719). ABBREVIATIONS healthy site in healthy sibling (HS); healthy site in healthy control child (HC).
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Affiliation(s)
- L M Shaddox
- Department of Periodontology, College of Dentistry, University of Florida, Gainesville, FL, USA.
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Microbiota associated with infections of the jaws. Int J Dent 2012; 2012:369751. [PMID: 22829824 PMCID: PMC3399405 DOI: 10.1155/2012/369751] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2012] [Revised: 05/09/2012] [Accepted: 05/18/2012] [Indexed: 01/28/2023] Open
Abstract
The microbial infections involving the craniofacial skeleton, particularly maxilla and mandible, have direct relationship with the dental biofilm, with predominance of obligate anaerobes. In some patients, these infections may spread to bone marrow or facial soft tissues, producing severe and life-threatening septic conditions. In such cases, local treatment associated with systemic antimicrobials should be used in order to eradicate the sources of contamination. This paper discuss the possibility of spread of these infections and their clinical implications for dentistry, as well as their etiology and aspects related to microbial virulence and pathogenesis.
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Stingu CS, Schaumann R, Jentsch H, Eschrich K, Brosteanu O, Rodloff AC. Association of periodontitis with increased colonization by Prevotella nigrescens. ACTA ACUST UNITED AC 2012; 4:20-5. [PMID: 22767485 DOI: 10.1111/j.2041-1626.2012.00129.x] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2011] [Accepted: 01/23/2012] [Indexed: 11/26/2022]
Abstract
AIM To estimate differences in the prevalence of Prevotella intermedia and Prevotella nigrescens in the subgingival plaque of patients with periodontitis (including aggressive and advanced chronic periodontitis) compared to healthy controls, and to search for significant associations with clinical status. METHODS Sixteen patients and 16 healthy controls were enrolled in this study. Interproximal plaque index, oral hygiene index, gingival index, bleeding on probing, probing depth, and clinical attachment level were recorded. Samples of subgingival plaque were taken with paper points from four teeth of each individual and immediately plated on appropriate supplemented Columbia agar. Black pigmented colonies were identified with the Rapid ID32 A system, and further differentiated using matrix-assisted laser desorption ionization-time of flight mass spectrometry. For the statistical analysis, chi-squared test and the Mann-Whitney U-test were used. RESULTS Prevotella nigrescens was isolated from 10 patients and three controls, while P. intermedia was isolated from only two patients. P. nigrescens was found more frequently in the subgingival plaque of patients (P = 0.029), and was significantly associated with high values of clinical indices (P ≤ 0.025). Significant differences for P. intermedia were not found. CONCLUSIONS Periodontitis seems to be associated with increased colonization with P. nigrescens. Whether or not it is a major pathogen needs to be determined.
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Affiliation(s)
- Catalina-Suzana Stingu
- Institute for Medical Microbiology and Epidemiology of Infectious Diseases, University of Leipzig, Leipzig, Germany.
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Ennibi OK, Benrachadi L, Bouziane A, Haubek D, Poulsen K. The highly leukotoxic JP2 clone of Aggregatibacter actinomycetemcomitans in localized and generalized forms of aggressive periodontitis. Acta Odontol Scand 2012; 70:318-22. [PMID: 22251014 DOI: 10.3109/00016357.2011.642002] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
OBJECTIVE To investigate the presence of A. actinomycetemcomitans, including the highly virulent JP2 clone, in young adult patients with aggressive periodontitis, and associate the findings with the two forms of the disease. MATERIALS AND METHODS Seventy Moroccan subjects with aggressive periodontitis, aged less than 35 years, were recruited. Among these, 41 had LAgP and 29 had GAgP. Plaque samples were collected from periodontal pockets and examined using a PCR that detects the presence of A. actinomycetemcomitans and which differentiates between JP2 and non-JP2 genotypes of the bacterium. RESULTS total of 58 (83%) from the 70 AgP patients were positive for A. actinomycetemcomitans, among whom 77% were positives for the JP2 clone. The JP2 clone was detected in 34 (83%) of the LAgP patients compared to 20 (69%) of the GAgP patients (p = 0.17). Fourteen (20%) of the patients harbored non-JP2 genotypes of A. actinomycetemcomitans, although most of these patients (10/14) also harbored the JP2 clone. CONCLUSIONS The presence of the JP2 clone of A. actinomycetemcomitans is strongly associated with both LAgP and GAgP in young adults in Morocco. This implies that treatment of AgP in this population should include microbiological screening and aim at eradication of the bacterium when present.
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Affiliation(s)
- Oum Keltoum Ennibi
- Department of Periodontology, Dental School, Mohammed V Souissi University, Rabat, Morocco.
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Subgingival microbial profiles of generalized aggressive and chronic periodontal diseases. Arch Oral Biol 2012; 57:973-80. [PMID: 22377404 DOI: 10.1016/j.archoralbio.2012.02.003] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2011] [Revised: 12/24/2011] [Accepted: 02/01/2012] [Indexed: 11/20/2022]
Abstract
OBJECTIVE The aim of this study was to distinguish between generalized aggressive (GAgP) and chronic periodontitis (CP) based on the subgingival microbial profiles predominant in these diseases. METHODS Two-hundred and sixty subjects, 75 with GAgP and 185 with CP were recruited. Full-mouth clinical measurements were recorded. Individual subgingival plaque samples were taken from 7 sites per subject and analyzed for the prevalence and levels of 51 species by chequerboard. Differences between groups were examined by the Mann-Whitney test. Associations between bacterial species and GAgP were examined by logistic regression analysis. RESULTS Actinomyces gerensceriae, Actinomyces israelli, Eubacterium nodatum and Propionibacterium acnes were detected in significantly greater counts in GAgP, whereas Capnocytophaga ochracea, Fusobacterium periodonticum, Staphylococcus aureus and Veillonella parvula were more predominant in CP patients (adjusted p < 0.001). E. nodatum (at mean levels ≥4 × 10(5)) increased significantly the probability of a subject being diagnosed with GAgP than CP (OR 2.44 [0.96-6.20]), whereas P. gingivalis (OR 0.34 [0.11-0.93]) and T. denticola (OR 0.35 [0.11-0.94]) were associated with CP. CONCLUSIONS Very few subgingival species differed in prevalence and/or levels between GAgP and CP in this sample population. In particular, E. nodatum was strongly related to GAgP, whereas P. gingivalis and T. denticola were associated with CP.
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Novaes AB, Schwartz-Filho HO, de Oliveira RR, Feres M, Sato S, Figueiredo LC. Antimicrobial photodynamic therapy in the non-surgical treatment of aggressive periodontitis: microbiological profile. Lasers Med Sci 2011; 27:389-95. [PMID: 21399951 DOI: 10.1007/s10103-011-0901-6] [Citation(s) in RCA: 57] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2010] [Accepted: 02/15/2011] [Indexed: 11/30/2022]
Abstract
The aim of this trial was to investigate changes occurring in the subgingival microbiological composition of subjects with aggressive periodontitis, treated with antimicrobial photodynamic therapy (aPDT), in a single episode, or scaling and root planing (SRP), in a split-mouth design on -7, 0, and +90 days. Ten patients were randomly assigned to either aPDT using a laser source in conjunction with a photosensitizer or SRP with hand instruments. Subgingival plaque samples were collected and the counts of 40 subgingival species were determined using checkerboard DNA-DNA hybridization. The data were analyzed using the method of generalized estimating equations (GEE) to test the associations between treatments, evaluated parameters, and experimental times (α = .05). The results indicated that aPDT and SRP affects different bacterial species, with aPDT being effective in reducing numbers of A. actinomycetemcomitans than SRP. On the other hand, SRP was more efficient than aPDT in reducing the presence of periodontal pathogens of the Red Complex. Additionally, a recolonization in the sites treated by aPDT was observed, especially for T. forsythia and P. gingivalis. Under our experimental conditions, this trial demonstrates that aPDT and SRP affected different groups of bacteria, suggesting that their association may be beneficial for the non-surgical treatment of aggressive periodontitis.
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Affiliation(s)
- Arthur B Novaes
- Department of Bucco-Maxillo-Facial Surgery and Traumatology and Periodontology, School of Dentistry of Ribeirão Preto, University of São Paulo, Ribeirão Preto, SP, Brazil.
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Heller D, Varela VM, Silva-Senem MXE, Torres MCB, Feres-Filho EJ, Colombo APV. Impact of systemic antimicrobials combined with anti-infective mechanical debridement on the microbiota of generalized aggressive periodontitis: a 6-month RCT. J Clin Periodontol 2011; 38:355-64. [DOI: 10.1111/j.1600-051x.2011.01707.x] [Citation(s) in RCA: 66] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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