1
|
Rodrigues RS, Silveira VR, Rego RO. Analysis of Porphyromonas gingivalis fimA genotypes in severe periodontitis patients. Braz Oral Res 2020; 34:e090. [PMID: 32785476 DOI: 10.1590/1807-3107bor-2020.vol34.0090] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2019] [Accepted: 06/02/2020] [Indexed: 11/21/2022] Open
Abstract
The aim of this study was to i) evaluate the prevalence of P. gingivalis and the genotypes fim A I, Ib, II, III, IV, and V in Brazilian patients with periodontitis stage III and IV, grades B and C, ii) compare periodontitis grades B and C with regard to the prevalence of P. gingivalis and fim A genotypes, and iii) correlate the presence of these pathogens with clinical periodontal variables. Two samples of subgingival biofilm were collected from the interproximal sites with the greatest clinical attachment loss (CAL) of each patient (grade B = 38; grade C = 54) and submitted to polymerase chain reaction (PCR) for the identification of P. gingivalis and fim A genotypes. The collected periodontal clinical parameters included gingival index, plaque index, probing depth (PD), bleeding on probing (BoP) and CAL. P. gingivalis was present in 61.96% of the samples, but more prevalent in patients with grade C periodontitis (p = 0.048) and higher CAL (p < 0.001), PD (p < 0.001), and BoP (p = 0.01) values, and at sites with high CAL values (p = 0.01). The fim A II genotype was more prevalent in patients with greater mean PD (p = 0.04) and a higher proportion of bleeding sites (p = 0.006). Thus, in this sample of Brazilian periodontitis patients, the presence of P. gingivalis was associated with grade C periodontitis and periodontal destruction, while the fim A II genotype was associated with increased PD and BoP, supporting the notion that P. gingivalis fim A II is an important virulence factor in periodontal tissues.
Collapse
Affiliation(s)
- Richelle Soares Rodrigues
- Graduate Program in Dentistry, School of Pharmacy, Dentistry and Nursing, Universidade Federal do Ceará, Fortaleza, CE, Brazil
| | - Virgínia Régia Silveira
- Department of Dentistry, School of Dentistry at Sobral, Universidade Federal do Ceará, Sobral, CE, Brazil
| | - Rodrigo Otavio Rego
- Department of Dentistry, School of Dentistry at Sobral, Universidade Federal do Ceará, Sobral, CE, Brazil
| |
Collapse
|
2
|
Distribution of Helicobacter pylori and Periodontopathic Bacterial Species in the Oral Cavity. Biomedicines 2020; 8:biomedicines8060161. [PMID: 32549275 PMCID: PMC7344611 DOI: 10.3390/biomedicines8060161] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2020] [Revised: 06/05/2020] [Accepted: 06/12/2020] [Indexed: 02/07/2023] Open
Abstract
The oral cavity may serve as a reservoir of Helicobacter pylori. However, the factors required for H. pylori colonization are unknown. Here, we analyzed the relationship between the presence of H. pylori in the oral cavity and that of major periodontopathic bacterial species. Nested PCR was performed to detect H. pylori and these bacterial species in specimens of saliva, dental plaque, and dental pulp of 39 subjects. H. pylori was detected in seven dental plaque samples (17.9%), two saliva specimens (5.1%), and one dental pulp (2.6%) specimen. The periodontal pockets around the teeth, from which dental plaque specimens were collected, were significantly deeper in H. pylori-positive than H. pylori-negative subjects (p < 0.05). Furthermore, Porphyromonas gingivalis, a major periodontopathic pathogen, was detected at a significantly higher frequency in H. pylori-positive than in H. pylori-negative dental plaque specimens (p < 0.05). The distribution of genes encoding fimbriae (fimA), involved in the periodontal pathogenicity of P. gingivalis, differed between H. pylori-positive and H. pylori-negative subjects. We conclude that H. pylori can be present in the oral cavity along with specific periodontopathic bacterial species, although its interaction with these bacteria is not clear.
Collapse
|
3
|
Variation in the Occurrence of fimA Genotypes of Porphyromonas gingivalis in Periodontal Health and Disease. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2020; 17:ijerph17061826. [PMID: 32168960 PMCID: PMC7142462 DOI: 10.3390/ijerph17061826] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/24/2020] [Accepted: 03/05/2020] [Indexed: 12/13/2022]
Abstract
Porphyromonas gingivalis is regarded as a “keystone pathogen” in periodontitis. The fimbria assists in the initial attachment, biofilm organization, and bacterial adhesion leading to the invasion and colonization of host epithelial cells. The present study aimed to investigate the occurrence of fimA genotypes in patients with chronic periodontitis and healthy individuals in the Indian population, and to study their association with the number of P. gingivalis cells obtained in subgingival plaque samples of these subjects. The study comprised 95 samples from the chronic periodontitis (CP) group and 35 samples from the healthy (H) group, which were detected positive for P. gingivalis in our previous study. Fimbrial genotyping was done by PCR and PCR-restriction fragment length polymorphism (RFLP). The fimA type II was more prevalent in the CP group (55.89%), followed by type IV (30.52%), whereas in the H group, type I was the most prevalent fimbria (51.42%). The quantity of P. gingivalis cells increased with the presence of fimA types II and III. Our results suggest a strong relationship between fimA types II and IV and periodontitis, and between type I and the healthy condition. The colonization of organisms was increased with the occurrence of type II in deep periodontal sites, which could play an important role in the progression of the disease.
Collapse
|
4
|
Shimoyama Y, Ohara-Nemoto Y, Kimura M, Nemoto TK, Tanaka M, Kimura S. Dominant prevalence of Porphyromonas gingivalis fimA types I and IV in healthy Japanese children. J Dent Sci 2017; 12:213-219. [PMID: 30895053 PMCID: PMC6400010 DOI: 10.1016/j.jds.2017.03.006] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2016] [Revised: 12/26/2016] [Indexed: 11/17/2022] Open
Abstract
Background/purpose Porphyromonas gingivalis is a major causative agent of chronic periodontitis, whilst circumstances for acquisition of the bacterium remain to be elucidated. To examine prevalence of the bacterium harboring distinct fimA types in dental plaque of children, we established PCR procedures that are applicable for specimens with limited amounts. By this method, all six fimA types including type I and Ib were directly identified, and prevalence of fimA types and their frequency of guardian-child transmission in Japanese children were assessed. Materials and methods Genomic DNA was purified from dental plaque specimens of 132 periodontally healthy children (2-12 years old, 4.8 ± 0.2 years) and 19 mothers of resultant P. gingivalis-positive child subjects. PCR-based fimA genotyping was performed, and untypeable strains in the first PCR analysis were determined by a nested PCR. Results P. gingivalis was found in 15.2% of the subjects (2-10 years old, 5.1 ± 0.6 years), and the most prevalent types were I and IV (37.0% each), followed by Ib and III (11.1% each), and then II (7.4%). Seven (35.0%) of the 20 P. gingivalis-positive subjects had combined colonization of type I with other fimA types. In most cases, bacterial prevalence and fimA types in the children were distinct from those of their mothers, indicating that its maternal transmission was not significant. Conclusion These results suggest that colonization of non-disease-associated fimA types I and IV P. gingivalis to the oral cavity initiates from early childhood without showing any periodontal inflammation.
Collapse
Affiliation(s)
- Yu Shimoyama
- Division of Molecular Microbiology, Iwate Medical University Graduate School of Dentistry, Yahaba-cho, Iwate, Japan
| | - Yuko Ohara-Nemoto
- Department of Oral Molecular Biology, Course of Medical and Dental Sciences, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
- Corresponding author. Department of Oral Molecular Biology, Course of Medical and Dental Sciences, Nagasaki University Graduate School of Biomedical Sciences, 1-7-1 Sakamoto, Nagasaki 852-8588, Japan. Fax: +81 95 819 7642.
| | - Misumi Kimura
- Division of Molecular Microbiology, Iwate Medical University Graduate School of Dentistry, Yahaba-cho, Iwate, Japan
- Division of Paediatric Dentistry, Iwate Medical University Graduate School of Dentistry, Morioka, Iwate, Japan
| | - Takayuki K. Nemoto
- Department of Oral Molecular Biology, Course of Medical and Dental Sciences, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Mitsuro Tanaka
- Division of Paediatric Dentistry, Iwate Medical University Graduate School of Dentistry, Morioka, Iwate, Japan
| | - Shigenobu Kimura
- Division of Molecular Microbiology, Iwate Medical University Graduate School of Dentistry, Yahaba-cho, Iwate, Japan
| |
Collapse
|
5
|
Kim SG, Hong JY, Shin SI, Moon JH, Lee JY, Herr Y. Prevalence of Porphyromonas gingivalis fimA genotypes in the peri-implant sulcus of Koreans assessed using a new primer. J Periodontal Implant Sci 2016; 46:35-45. [PMID: 26937292 PMCID: PMC4771836 DOI: 10.5051/jpis.2016.46.1.35] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2015] [Accepted: 01/23/2016] [Indexed: 11/08/2022] Open
Abstract
PURPOSE Porphyromonas gingivalis fimA is a virulence factor associated with periodontal diseases, but its role in the pathogenesis of peri-implantitis remains unclear. We aimed to evaluate the relationship between the condition of peri-implant tissue and the distribution of P. gingivalis fimA genotypes in Koreans using a new primer. METHODS A total of 248 plaque samples were taken from the peri-implant sulci of 184 subjects. The control group consisted of sound implants with a peri-implant probing depth (PD) of 5 mm or less with no bleeding on probing (BOP). Test group I consisted of implants with a peri-implant PD of 5 mm or less and BOP, and test group II consisted of implants with a peri-implant PD of more than 5 mm and BOP. DNA was extracted from each sample and analyzed a using a polymerase chain reaction (PCR) with P. gingivalis-specific primers, followed by an additional PCR assay to differentiate the fimA genotypes in P. gingivalis-positive subjects. RESULTS The Prevalence of P. gingivalis in each group did not significantly differ (P>0.05). The most predominant fimA genotype in all groups was type II. The prevalence of type Ib fimA was significantly greater in test group II than in the control group (P<0.05). CONCLUSIONS The fimA type Ib genotype of P. gingivalis was found to play a critical role in the destruction of peri-implant tissue, suggesting that it may be a distinct risk factor for peri-implantitis.
Collapse
Affiliation(s)
- Sung-Geun Kim
- Department of Periodontology, School of Dentistry, Kyung Hee University, Seoul, Korea
| | - Ji-Youn Hong
- Department of Periodontology, School of Dentistry, Kyung Hee University, Seoul, Korea.; Department of Periodontology, Institute of Oral Biology, School of Dentistry, Kyung Hee University, Seoul, Korea
| | - Seung-Il Shin
- Department of Periodontology, School of Dentistry, Kyung Hee University, Seoul, Korea.; Department of Periodontology, Institute of Oral Biology, School of Dentistry, Kyung Hee University, Seoul, Korea
| | - Ji-Hoi Moon
- Department of Maxillofacial Biomedical Engineering, School of Dentistry, Kyung Hee University, Seoul, Korea
| | - Jin-Yong Lee
- Department of Maxillofacial Biomedical Engineering, School of Dentistry, Kyung Hee University, Seoul, Korea
| | - Yeek Herr
- Department of Periodontology, School of Dentistry, Kyung Hee University, Seoul, Korea.; Department of Periodontology, Institute of Oral Biology, School of Dentistry, Kyung Hee University, Seoul, Korea
| |
Collapse
|
6
|
Fabrizi S, León R, Blanc V, Herrera D, Sanz M. Variability of the fimA gene in Porphyromonas gingivalis isolated from periodontitis and non-periodontitis patients. Med Oral Patol Oral Cir Bucal 2013; 18:e100-5. [PMID: 23229246 PMCID: PMC3548627 DOI: 10.4317/medoral.18042] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2011] [Indexed: 12/11/2022] Open
Abstract
Objective: The goal of this study was to determine the genetic variability of the fimA gene in Porphyromonas gingivalis isolates from Spanish patients.
Study Design: Pooled subgingival samples were taken, processed and cultured in non-selective blood agar medium. Pure cultures of one to six isolates per patient were obtained and PCR and PCR-RFLP were used for fimbrillin gene (fimA) type determination of the extracted genomic (DNA).
Results: Two hundred and twenty four Porphyromonas gingivalis isolates from 65 patients were analyzed consisting of 15 non-periodontitis patients (66 isolates) and 50 with periodontitis (158 isolates). Genotype II was the most prevalent (50.9%), while the other types of fimbriae did not exceed fifteen percent of prevalence. Isolates with types II and IV of fimbriae were significantly more prevalent in periodontitis patients than isolates with genotype I. Co-infection was observed in 17.65% of the patients analyzed.
Conclusion: The results suggest that in this population Porphyromonas gingivalis with type II of fimbriae are significantly more predominant in periodontitis patients than genotype I.
Key words:Fimbriae, genotype, porphyromonas gingivalis, periodontitis.
Collapse
Affiliation(s)
- Simone Fabrizi
- ETEP Research Group, Complutense University, Madrid, Spain.
| | | | | | | | | |
Collapse
|
7
|
Moon JH, Herr Y, Lee HW, Shin SI, Kim C, Amano A, Lee JY. Genotype analysis of Porphyromonas gingivalis fimA in Korean adults using new primers. J Med Microbiol 2012; 62:1290-1294. [PMID: 23264452 DOI: 10.1099/jmm.0.054247-0] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023] Open
Abstract
Strains of Porphyromonas gingivalis, a periodontopathic bacterium, are classified into six genotypic variants based on nucleotide sequence differences in the fimA gene encoding FimA. A PCR assay using primer sets specific for each genotype has demonstrated that the most predominant fimA genotype in periodontitis patients is type II, which is now commonly referred to as the periodontitis-associated fimA genotype of P. gingivalis. However, the potential for false type II fimA positives caused by cross-hybridization of type II fimA-specific primers with type Ib fimA has complicated the genotyping. A previous study developed new primers that specifically amplified only the DNA fragment of type II fimA. The aim of the present study was to assess the prevalence of P. gingivalis fimA genotypes in Korean adults and to reconfirm the relationship between type II fimA and periodontitis using the new primers. Among 412 Korean adults, P. gingivalis was detected in 97.5 % of patients and 57.8 % of healthy subjects. Type II fimA was the most widely distributed type among healthy and periodontitis subjects. Organisms with types II, Ib and IV fimA had a significant frequency of occurrence in periodontitis subjects. Statistical analysis, however, revealed that a more significant correlation was found between periodontitis and the occurrence of type Ib fimA.
Collapse
Affiliation(s)
- Ji-Hoi Moon
- Institute of Oral Biology, Kyung Hee University, Seoul, Republic of Korea
- Department of Maxillofacial Biomedical Engineering, School of Dentistry, Kyung Hee University, Seoul, Republic of Korea
| | - Yeek Herr
- Department of Periodontology, School of Dentistry, Kyung Hee University, Seoul, Republic of Korea
- Institute of Oral Biology, Kyung Hee University, Seoul, Republic of Korea
| | - Hyeon-Woo Lee
- Department of Pharmacology, School of Dentistry, Kyung Hee University, Seoul, Republic of Korea
- Institute of Oral Biology, Kyung Hee University, Seoul, Republic of Korea
| | - Seung-Il Shin
- Department of Periodontology, School of Dentistry, Kyung Hee University, Seoul, Republic of Korea
- Institute of Oral Biology, Kyung Hee University, Seoul, Republic of Korea
| | - Cheul Kim
- Department of Oral Medicine and Diagnosis, College of Dentistry and Research Institute of Oral Science, Gangneung-Wonju National University, Gangneung, Republic of Korea
| | - Atsuo Amano
- Department of Preventive Dentistry, Osaka University Graduate School of Dentistry, Suita, Osaka, Japan
| | - Jin-Yong Lee
- Institute of Oral Biology, Kyung Hee University, Seoul, Republic of Korea
- Department of Maxillofacial Biomedical Engineering, School of Dentistry, Kyung Hee University, Seoul, Republic of Korea
| |
Collapse
|
8
|
Moon JH, Shin SI, Chung JH, Lee SW, Amano A, Lee JY. Development and evaluation of new primers for PCR-based identification of type II fimA of Porphyromonas gingivalis. ACTA ACUST UNITED AC 2012; 64:425-8. [PMID: 22067036 DOI: 10.1111/j.1574-695x.2011.00889.x] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
For more accurate PCR-based identification of Porphyromonas gingivalis harboring genotype II fimA, the most prevalent type in periodontitis patients, a new primer set was developed and evaluated. The previous type II primers hybridized to the DNA of P gingivalis strains harboring type Ib as well as type II fimA, while the new primers specifically amplified only the DNA fragment of type II fimA. In the investigation using mixed bacterial culture and 155 clinical samples from peri-implantitis patients, the new primers increased the accuracy of PCR-based detection of type II fimA by excluding false-negatives as well as false-positives.
Collapse
Affiliation(s)
- Ji-Hoi Moon
- Department of Maxillofacial Biomedical Engineering, School of Dentistry, Kyung Hee University, Seoul, Korea; 2Institute of Oral Biology, Kyung Hee University, Seoul, Korea
| | | | | | | | | | | |
Collapse
|
9
|
Nomura R, Shirai M, Kato Y, Murakami M, Nakano K, Hirai N, Mizusawa T, Naka S, Yamasaki Y, Matsumoto-Nakano M, Ooshima T, Asai F. Diversity of fimbrillin among Porphyromonas gulae clinical isolates from Japanese dogs. J Vet Med Sci 2012; 74:885-91. [PMID: 22382732 DOI: 10.1292/jvms.11-0564] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Porphyromonas gulae, a gram-negative black-pigmented anaerobe, is a pathogen for periodontitis in dogs. An approximately 41-kDa fimbrial subunit protein (FimA) encoded by fimA is regarded as associated with periodontitis. In the present study, the fimA genes of 17 P. gulae strains were sequenced, and classified into two major types. The generation of phylogenetic trees based on the deduced amino acid sequence of FimA of P. gulae strains along with sequences from several strains of Porphyromonas gingivalis, a major cause of human periodontitis, revealed that the two types of FimA (types A and B) of P. gulae were similar to type I FimA and types II and III FimA of P. gingivalis, respectively. A PCR system for classification was established based on differences in the nucleotide sequences of the fimA genes. Analysis of 115 P. gulae-positive oral swab specimens from dogs revealed that 42.6%, 22.6%, and 26.1% of them contained type A, type B, and both type A and B fimA genes, respectively. Experiments with a mouse abscess model demonstrated that the strains with type B fimA caused significantly greater systemic inflammation than those with type A. These results suggest that the FimA proteins of P. gulae are diverse with two major types and that strains with type B fimA could be more virulent.
Collapse
Affiliation(s)
- Ryota Nomura
- Department of Pediatric Dentistry, Osaka University Graduate School of Dentistry, Suita, Osaka 565-0871, Japan
| | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
10
|
Hayashi F, Okada M, Oda Y, Kojima T, Kozai K. Prevalence of Porphyromonas gingivalis fimA genotypes in Japanese children. J Oral Sci 2012; 54:77-83. [DOI: 10.2334/josnusd.54.77] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
|
11
|
Wada K, Kamisaki Y. Molecular dissection of Porphyromonas gingivalis-related arteriosclerosis: a novel mechanism of vascular disease. Periodontol 2000 2010; 54:222-34. [PMID: 20712642 DOI: 10.1111/j.1600-0757.2009.00336.x] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
|
12
|
Kuboniwa M, Inaba H, Amano A. Genotyping to distinguish microbial pathogenicity in periodontitis. Periodontol 2000 2010; 54:136-59. [DOI: 10.1111/j.1600-0757.2010.00352.x] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
|
13
|
Nakano K, Miyamoto E, Tamura K, Nemoto H, Fujita K, Nomura R, Ooshima T. Distribution of 10 periodontal bacterial species in children and adolescents over a 7-year period. Oral Dis 2008; 14:658-64. [DOI: 10.1111/j.1601-0825.2008.01452.x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
|
14
|
Zhao L, Wu YF, Meng S, Yang H, OuYang YL, Zhou XD. Prevalence of fimA genotypes of Porphyromonas gingivalis and periodontal health status in Chinese adults. J Periodontal Res 2007; 42:511-7. [DOI: 10.1111/j.1600-0765.2007.00975.x] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
15
|
Wu YM, Yan J, Chen LL, Gu ZY. Association between infection of different strains of Porphyromonas gingivalis and Actinobacillus actinomycetemcomitans in subgingival plaque and clinical parameters in chronic periodontitis. J Zhejiang Univ Sci B 2007; 8:121-31. [PMID: 17266188 PMCID: PMC1791058 DOI: 10.1631/jzus.2007.b0121] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
OBJECTIVE The aim of this study was to investigate subgingival infection frequencies of Porphyromonas gingivalis and Actinobacillus actinomycetemcomitans strains with genetic variation in Chinese chronic periodontitis (CP) patients and to evaluate its correlation with clinical parameters. METHODS Two multiplex polymerase chain reaction (PCR) assays were developed to detect the 16SrDNA, collagenase (prtC) and fimbria (fimA) genes of P. gingivalis and the 16SrDNA, leukotoxin (lktA) and fimbria-associated protein (fap) genes of A. actinomycetemcomitans in 60 sulcus samples from 30 periodontal healthy subjects and in 122 subgingival plaque samples from 61 patients with CP. The PCR products were further T-A cloned and sent for nucleotide sequence analysis. RESULTS The 16SrDNA, prtC and fimA genes of P. gingivalis were detected in 92.6%, 85.2% and 80.3% of the subgingival plaque samples respectively, while the 16SrDNA, lktA and fap genes of A. actinomycetemcomitans were in 84.4%, 75.4% and 50.0% respectively. Nucleotide sequence analysis showed 98.62%~100% homology of the PCR products in these genes with the reported sequences. P. gingivalis strains with prtC+/fimA+ and A. actinomycetemcomitans with lktA+ were predominant in deep pockets (>6 mm) or in sites with attachment loss > or =5 mm than in shallow pockets (3~4 mm) or in sites with attachment loss < or =2 mm (P<0.05). P. gingivalis strains with prtC+/fimA+ also showed higher frequency in gingival index (GI)=3 than in GI=1 group (P<0.05). CONCLUSION Infection of P. gingivalis with prtC+/fimA+ and A. actinomycetemcomitans with lktA+ correlates with periodontal destruction of CP in Chinese. Nonetheless P. gingivalis fimA, prtC genes and A. actinomycetemcomitans lktA gene are closely associated with periodontal destruction, while A. actinomycetemcomitans fap gene is not.
Collapse
Affiliation(s)
- Yan-min Wu
- Department of Stomatology, the Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou 310009, China
| | - Jie Yan
- Department of Medical Microbiology and Parasitology, School of Medicine, Zhejiang University, Hangzhou 310006, China
| | - Li-li Chen
- Department of Stomatology, the Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou 310009, China
- †E-mail:
| | - Zhi-yuan Gu
- Department of Oral and Maxillofacial Surgery, the Affiliated Hospital of Stomatology, School of Medicine, Zhejiang University, Hangzhou 310003, China
| |
Collapse
|
16
|
Tamura K, Nakano K, Hayashibara T, Nomura R, Fujita K, Shintani S, Ooshima T. Distribution of 10 periodontal bacteria in saliva samples from Japanese children and their mothers. Arch Oral Biol 2006; 51:371-7. [PMID: 16269128 DOI: 10.1016/j.archoralbio.2005.09.008] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2005] [Revised: 09/20/2005] [Accepted: 09/28/2005] [Indexed: 11/21/2022]
Abstract
OBJECTIVE We analyzed the distribution of 10 periodontal bacteria species (Porphyromonas gingivalis, Tannerella forsythensis, Prevotella intermedia, Prevotella nigrescens, Campylobacter rectus, Eikenella corrodens, Actinobacillus actinomycetemcomitans, Capnocytophaga ochracea, Capnocytophaga sputigena, and Treponema denticola) in children, and then compared their distribution in those children and their mothers, with special attention given to three of the species known as the red complex (P. gingivalis, T. forsythensis, and T. denticola) whose presence has been shown to be associated with conditions related to periodontal diseases. METHODS One hundred thirteen pairs of children and their mothers were randomly selected from patients treated at the Pedodontic Clinic of Osaka University Dental Hospital. Saliva samples were taken at the second visit prior to receiving professional tooth brushing instruction. Genomic DNA was extracted from each saliva sample, followed by a polymerase chain reaction assay with species-specific sets of primers. RESULTS A. actinomycetemcomitans was the most frequently detected species in the mothers, followed by C. sputigena, P. gingivalis, and T. forsythensis, while C. sputigena had the highest detection rate, followed by A. actinomycetemcomitans and T. denticola in the children. The detection rate of the red complex species in children whose mothers possessed the same species was significantly higher than in those whose mothers did not possess them. CONCLUSIONS Our results indicate a correlation between the presence of periodontal bacteria in children and their mothers, while the presence of red complex bacteria in children was highly associated with that in their mothers.
Collapse
Affiliation(s)
- Kiyoko Tamura
- Department of Pediatric Dentistry, Osaka University Graduate School of Dentistry, 1-8 Yamada-oka, Suita, Osaka 565-0871, Japan
| | | | | | | | | | | | | |
Collapse
|