New Bacterial Species Associated with Chronic Periodontitis

2003 ◽  
Vol 82 (5) ◽  
pp. 338-344 ◽  
Author(s):  
P.S. Kumar ◽  
A.L. Griffen ◽  
J.A. Barton ◽  
B.J. Paster ◽  
M.L. Moeschberger ◽  
...  
Keyword(s):  
New Species ◽  
Chronic Periodontitis ◽  
Bacterial Species ◽  
Pcr Amplification ◽  
Periodontal Pathogens ◽  
Cloning And Sequencing ◽  
Periodontal Health ◽  
Oral Flora ◽  
Bacteroidetes Phylum ◽  
Species Specific

Recent investigations of the human subgingival oral flora based on ribosomal 16S cloning and sequencing have shown many of the bacterial species present to be novel species or phylotypes. The purpose of the present investigation was to identify potential periodontal pathogens among these newly identified species and phylotypes. Species-specific ribosomal 16S primers for PCR amplification were developed for detection of new species. Associations with chronic periodontitis were observed for several new species or phylotypes, including uncultivated clones D084 and BH017 from the Deferribacteres phylum, AU126 from the Bacteroidetes phylum, Megasphaera clone BB166, clone X112 from the OP11 phylum, and clone I025 from the TM7 phylum, and the named species Eubacterium saphenum, Porphyromonas endodontalis, Prevotella denticola, and Cryptobacterium curtum. Species or phylotypes more prevalent in periodontal health included two uncultivated phylotypes, clone W090 from the Deferribacteres phylum and clone BU063 from the Bacteroidetes, and named species Atopobium rimae and Atopobium parvulum.

scholarly journals Evaluation of Enterococcus faecalis, Staphylococcus warneri and Staphylococcus aureus species in adults with generalized chronic periodontitis

2017 ◽  
Vol 65 (2) ◽  
pp. 121-127
Author(s):  
Aretuza FRITOLI ◽  
Eduardo LOBÃO ◽  
Geisla Soares ◽  
Belén RETAMAL-VALDES ◽  
Magda FERES
Keyword(s):  
Staphylococcus Aureus ◽  
Enterococcus Faecalis ◽  
Chronic Periodontitis ◽  
Bacterial Species ◽  
Hybridization Technique ◽  
Periodontal Pathogens ◽  
Periodontal Health ◽  
Staphylococcus Warneri ◽  
Percentage Points

ABSTRACT Objective: To identify and quantify the levels of three bacterial species that have recently been identified as potential “new” periodontal pathogens (Enterococcus faecalis, Staphylococcus aureus and Staphylococcus warneri) in subjects with periodontal health and generalized chronic periodontitis. Methods: Thirty adults with generalized chronic periodontitis and 10 periodontally healthy were included in this study. Nine subgingival biofilm samples were collected per subject and individually analyzed by checkerboard DNA-DNA hybridization technique. Results: The mean levels of E. faecalis and S. warneri were higher in chronic periodontitis than in periodontal health (p<0.05). Furthermore, a higher percentage of subjects with periodontitis were colonized by the three species evaluated in comparison with healthy subjects (p<0.05). This represented a difference of 40 percentage points between the two groups, for E. faecalis (present in 90% of individuals with periodontitis and 50% of the healthy individuals) and S. warneri (100% and 60%, respectively), and 26 percentage points for S. aureus (86% and 60%, respectively). Conclusion: E. faecalis and S. warneri have the potential to be periodontal pathogens. The role of S. aureus was less evident, since this species was more prevalent and at relatively higher levels in health than the other two species. These data might guide future studies on the role of these microorganisms in the etiology of periodontitis and help to establish more effective treatments for these infections.

scholarly journals MICROBIOLOGICAL STUDY OF ORAL FLORA IN DIABETIC PATIENTS WITH GINGIVITIS

2018 ◽  
Vol 10 (6) ◽  
pp. 113
Author(s):  
Samira Hsaine ◽  
Fatima Zahrae Fethi ◽  
Reda Charof ◽  
Khadija Ounine
Keyword(s):  
Periodontal Disease ◽  
Culture Media ◽  
Bacterial Species ◽  
Klebsiella Oxytoca ◽  
Diabetic Patients ◽  
Periodontal Pathogens ◽  
Biochemical Tests ◽  
Oral Flora ◽  
Metabolic Dysregulation

Objective: Given the importance of the association between diabetes and periodontal disease, the main objective of the present study was to compare the microbial diversity responsible for gingivitis in patients with and without type 2 diabetes.Methods: Samples were collected from the oral cavity of 134 patients with gingivitis and categorised into 3 groups (68 non-diabetic patients and 66 diabetic patients; 33 with controlled diabetes and 33 with poorly controlled diabetes). Sample culture was carried out on selective culture media. The identification of isolated strains involved a series of biochemical tests including miniature galleries (API 20E and 20 Strep), the traditional biochemical gallery (tubes) and automated bacterial identification (BD Phoenix™).Results: Identification by biochemical methods made it possible to differentiate 14 bacterial species and one yeast. There was greater bacterial diversity in diabetic patients as compared to non-diabetic patients. Periodontal pathogens were isolated from both diabetic and non-diabetic populations; however, certain microbes such as Streptococcus acidominimus, Enterobacter cloacae, Klebsiella oxytoca, and Pseudomonas aeruginosa were present only in diabetics, with a much higher percentage in those with poorly controlled diabetes.Conclusion: Poorly controlled diabetes causes metabolic dysregulation that can increase the severity of periodontal disease.

scholarly journals Effect of vitamin C supplementation on gingival bleeding

2018 ◽  
Vol 30 (3) ◽  
pp. 178
Author(s):  
Indra Mustika Setia Pribadi ◽  
Nunung Rusminah ◽  
Yanti Rusyanti ◽  
Anne Agustina Suwargiani
Keyword(s):  
Vitamin C ◽  
Chronic Periodontitis ◽  
Host Defence ◽  
Periodontal Pathogens ◽  
Defence Mechanisms ◽  
Periodontal Health ◽  
High Category ◽  
Gingival Bleeding ◽  
Before And After ◽  
Vitamin C Supplementation

Introduction: Periodontitis is a multifactorial disease caused by a disproportion between environmental factors such as periodontal pathogens and the host defence. Genetic factors, hormones, and nutrition may influence host defence mechanisms. One of the nutrition needed for periodontal health is vitamin C. This study was aimed to evaluate the effect of vitamin C supplementation on gingival bleeding. Methods: As much as ninety-eight patients with chronic periodontitis consisted of 42 males and 56 females, aged 30 – 59-years-old participated in this study. Gingival bleeding was assessed before and after 3 months administered with vitamin C supplementation. Gingival bleeding criteria was based on Van der Velden with tooth selection based on Ramfjörd. Result: Gingival bleeding before the administration of vitamin C supplementation was found in the high category at 4 patients (4.1%), medium at 36 patients (36.7%), and low at 58 patients (59.2%).  After 3 months administration of vitamin C supplementation, high category gingival bleeding was found in 2 patients (2%), medium in 16 patients (16.3%), and low in 80 patients (81.6%). Conclusion: There was an effect of vitamin C supplementation on gingival bleeding.Keywords: Chronic periodontitis, vitamin C supplementation, gingival bleeding.

scholarly journals Subgingival Microbial Profile And Production Of Proinflammatory Cytokines In Chronic Periodontitis

Folia Medica ◽  
2014 ◽  
Vol 56 (3) ◽  
pp. 152-160 ◽  
Author(s):  
Velichka T. Dosseva-Panova ◽  
Christina L. Popova ◽  
Vladimir E. Panov
Keyword(s):  
Porphyromonas Gingivalis ◽  
Proinflammatory Cytokines ◽  
Chronic Periodontitis ◽  
Bacterial Species ◽  
Cytokine Expression ◽  
The Body ◽  
Gingival Tissue ◽  
Periodontal Pathogens ◽  
Pocket Depth ◽  
Necrosis Factor Alpha

ABSTRACT This review examines literature data concerning the bacterial findings in chronic periodontitis depending on pocket depth, and presents the latest published information on the presence of proinflammatory factors in periodontal environment. It has been found that chronic periodontitis affects as much as 80% of the middle-aged population; by comparison, the prevalence of aggressive periodontitis reaches up to 1-1.5%. It is accepted that this social disease is multifactorial in etiology, but the evidence in the literature suggests that the levels of specifi c Gram-negative organisms in subgingival plaque biofilm play a major role in the initiation and progression of the disease. Of the many bacterial species inhabiting the periodontal environment, three types - Porphyromonas gingivalis (PG), Treponema denticola (TD), Tannerella forsythia (TF) - are strongly associated with the initiation and progression of periodontitis. Microbiological studies suggest that Porphyromonas gingivalis should be considered a major etiologic agent. Currently, Porphyromonas gingivalis is strongly associated with the pathogenesis of chronic periodontitis. On the other hand, the presence of Aggregatibacter actinomycetemcomitans in patients with chronic periodontitis may be related to the severity of the disease and thus modify the therapeutic plan. The increased amount of periodontal pathogens in the subgingival area can activate a cascade of defense mechanisms of the body associated with the production of factors causing infl ammation and destruction, which suggests a correlation between the bacterial findings and the body response implemented by enhancing the local cytokine expression. Studies in the literature show that the presence of certain micro-organisms in the periodontal environment is associated to increased levels of proinflammatory cytokines in the gingival fluid and gingival tissue. These levels have been associated with destructive tissues response. There is little evidence in the literature on the correlation of the levels of periodontal pathogens of sites with different pocket depth with periodontal disease activity defined by the degree of the proinflammatory cytokine expression such as tumor necrosis factor alpha (TNF-α) and interleukin 6 (IL-6 ).

scholarly journals Porphyromonas gingivalis and its impact on periodontal health and systemic diseases. A concise review.

2019 ◽  
Vol 6 (1) ◽  
pp. 31-34
Author(s):  
Pablo Jasma ◽  
Patricio Sánchez
Keyword(s):  
Porphyromonas Gingivalis ◽  
Vascular Inflammation ◽  
Bacterial Species ◽  
Low Frequency ◽  
Chronic Inflammatory Disease ◽  
Periodontal Pathogens ◽  
Periodontal Health ◽  
Concise Review ◽  
Cardiovascular Cells ◽  
Systemic Health

Periodontitis is defined as a multifactorial chronic inflammatory disease, associated to a dysbiotic biofilm and characterized by the progressive destruction of the periodontal attachment. Clinical studies have revealed the presence of 10 to 15 bacterial species that are potential periodontal pathogens in adults. From these, the most cited are Porphyromonas gingivalis, Actinobacillus actinomycetemcomitans and Tannerella forsythia. The aim of this article is to review P. gingivalis’ characteristics and impact on periodontal and systemic health. Different studies have reported a relation between the presence of P. gingivalis and periodontal disease. P. gingivalis was one of the most frequently detected species in aggressive and chronic periodontitis. This is due to its unique ability to avoid the host’s immune response and contribute to the development of the destructive process. P. gingivalis, although only present in low frequency, is pathogenic because of its ability to induce dysbiotic microbial communities. There is more evidence that P. gingivalis might invade cardiovascular cells and tissues causing inflammation. It has been suggested that NLRP3 inflammasome plays a key role in the development of vascular inflammation and atherosclerosis. The repeated exposure to P. gingivalis, produces neuroinflammation, neurodegeneration and formation of intra and extracellular amyloid plaques, which are pathognomonic signs of Alzheimer’s disease.

scholarly journals Molecular Characterization of Epiphytic Bacterial Communities on Charophycean Green Algae

1998 ◽  
Vol 64 (11) ◽  
pp. 4384-4389 ◽  
Author(s):  
Madeline M. Fisher ◽  
Lee W. Wilcox ◽  
Linda E. Graham
Keyword(s):  
Green Algae ◽  
Bacterial Communities ◽  
Bacterial Species ◽  
Pcr Amplification ◽  
Cloning And Sequencing ◽  
16S Ribosomal Dna ◽  
Filamentous Green Algae ◽  
Sequence Types ◽  
Sheath Material

ABSTRACT Epiphytic bacterial communities within the sheath material of three filamentous green algae, Desmidium grevillii, Hyalotheca dissiliens, andSpondylosium pulchrum (class Charophyceae, order Zygnematales), collected from a Sphagnum bog were characterized by PCR amplification, cloning, and sequencing of 16S ribosomal DNA. A total of 20 partial sequences and nine different sequence types were obtained, and one sequence type was recovered from the bacterial communities on all three algae. By phylogenetic analysis, the cloned sequences were placed into several major lineages of the Bacteria domain: theFlexibacter/Cytophaga/Bacteroides phylum and the α, β, and γ subdivisions of the phylum Proteobacteria. Analysis at the subphylum level revealed that the majority of our sequences were not closely affiliated with those of known, cultured taxa, although the estimated evolutionary distances between our sequences and their nearest neighbors were always less than 0.1 (i.e., greater than 90% similar). This result suggests that the majority of sequences obtained in this study represent as yet phenotypically undescribed bacterial species and that the range of bacterial-algal interactions that occur in nature has not yet been fully described.

scholarly journals Microbiological Response to Periodontal Therapy: A Retrospective Study

2018 ◽  
Vol 12 (1) ◽  
pp. 837-845 ◽  
Author(s):  
Vittorio Checchi ◽  
Gaia Pascolo
Keyword(s):  
Cell Count ◽  
Chronic Periodontitis ◽  
Bacterial Species ◽  
Bacterial Load ◽  
Periodontal Pocket ◽  
Periodontal Pathogens ◽  
Microbiological Test ◽  
Probing Depth ◽  
Before And After ◽  
The Mean

Background:Periodontitis is a multifactorial infection caused by a complex of pathogenic bacterial species that induce the destruction of periodontal structures.Objective:The aim of this study is to evaluate the presence and bacterial load of six periodontal pathogens bacteria, measured at initial visit and after osseous surgery in patients affected by chronic periodontitis and treated between 2005 and 2007.Methods:This cohort study was carried out on a sample of 38 consecutive patients affected by severe chronic periodontitis, diagnosed at baseline on the basis of probing depths equal to 6.68 ± 1.47 mm. On each subject, a microbiological test was performed before periodontal initial therapy and after osseous surgery (one year later). Five compromised teeth were chosen for each patient (the same teeth, before and after surgery), for a total of 190 teeth. Real-time PCR based analysis computed total bacterial load of the samples and quantified six periodontal pathogens:Actinobacillus actinomycetemcomitans, Porphyromonas gingivalis, Tannerella forsythia,Treponema denticola, Fusobacterium nucleatumandPrevotella intermedia. Data collection was made consulting medical charts.Results:Pocket probing depth reduction after surgery was 4.50 ± 1.54 mm (p=0.0001). The mean number of sites with bleeding at baseline was 2.08 ± 1.17 and 0.58 ± 1.00 after surgery (p=0.001). The mean number of sites with suppuration at baseline was 0.26 ± 0.86 and 0 after surgery (p=0.02). Cell count of each pathogen and total cell count were significantly higher at baseline than after surgery. Almost all bacteria presented a mean percentage reduction equal to that of the total count, except forAaandPi,which seemed to show a greater resistance. The difference of bacterial load, both before and after surgery, between smokers and non-smokers was not statistically significant (p<0.05). A statistically significant correlation was detected between pocket probing depth variation and bleeding on probing variation before and after the surgery, controlling for age (r=0.6,p=0.001). No significant correlations were observed between pocket probing depth and bacterial loads, except forPg(r=0.5,p=0.001),Tf(r=0.6,p=0.001) andTd(r=0.4,p=0.02).Conclusions:Reduction of presence and bacterial load of the examined periodontal pathogens bacteria after osseous surgery, along with periodontal pocket reduction, appeared to be essential to achieve and maintain periodontal stability over years.

scholarly journals Periodontal Disease: The Good, The Bad, and The Unknown

2021 ◽  
Vol 11 ◽  
Author(s):  
Lea M. Sedghi ◽  
Margot Bacino ◽  
Yvonne Lorraine Kapila
Keyword(s):  
Periodontal Disease ◽  
Disease Progression ◽  
Inflammatory Responses ◽  
Bacterial Species ◽  
Systemic Disease ◽  
Microbial Pathogens ◽  
Oral Microbiota ◽  
Periodontal Pathogens ◽  
Periodontal Health ◽  
Periodontal Tissues

Periodontal disease is classically characterized by progressive destruction of the soft and hard tissues of the periodontal complex, mediated by an interplay between dysbiotic microbial communities and aberrant immune responses within gingival and periodontal tissues. Putative periodontal pathogens are enriched as the resident oral microbiota becomes dysbiotic and inflammatory responses evoke tissue destruction, thus inducing an unremitting positive feedback loop of proteolysis, inflammation, and enrichment for periodontal pathogens. Keystone microbial pathogens and sustained gingival inflammation are critical to periodontal disease progression. However, recent studies have revealed the importance of previously unidentified microbes involved in disease progression, including various viruses, phages and bacterial species. Moreover, newly identified immunological and genetic mechanisms, as well as environmental host factors, including diet and lifestyle, have been discerned in recent years as further contributory factors in periodontitis. These factors have collectively expanded the established narrative of periodontal disease progression. In line with this, new ideologies related to maintaining periodontal health and treating existing disease have been explored, such as the application of oral probiotics, to limit and attenuate disease progression. The role of systemic host pathologies, such as autoimmune disorders and diabetes, in periodontal disease pathogenesis has been well noted. Recent studies have additionally identified the reciprocated importance of periodontal disease in potentiating systemic disease states at distal sites, such as in Alzheimer’s disease, inflammatory bowel diseases, and oral cancer, further highlighting the importance of the oral cavity in systemic health. Here we review long-standing knowledge of periodontal disease progression while integrating novel research concepts that have broadened our understanding of periodontal health and disease. Further, we delve into innovative hypotheses that may evolve to address significant gaps in the foundational knowledge of periodontal disease.

scholarly journals Clinical and Microbiological Evaluation of Local Doxycycline and Antimicrobial Photodynamic Therapy during Supportive Periodontal Therapy: A Randomized Clinical Trial

Antibiotics ◽  
2021 ◽  
Vol 10 (3) ◽  
pp. 277
Author(s):  
Raluca Cosgarea ◽  
Sigrun Eick ◽  
Ionela Batori-Andronescu ◽  
Søren Jepsen ◽  
Nicole B. Arweiler ◽  
...  
Keyword(s):  
Photodynamic Therapy ◽  
Bacterial Species ◽  
Periodontal Therapy ◽  
Local Drug Delivery ◽  
Control Group ◽  
Periodontal Pathogens ◽  
Supportive Periodontal Therapy ◽  
Group A ◽  
Group B ◽  
Attachment Level

The aim of this study was to evaluate the clinical and microbiological effects of subgingival instrumentation (SI) alone or combined with either local drug delivery (LDD) or photodynamic therapy (PDT) in persistent/recurrent pockets in patients enrolled in supportive periodontal therapy (SPT). A total of 105 patients enrolled in SPT were randomly treated as follows: group A (n = 35): SI +PDT and 7 days later 2nd PDT; group B (n = 35): SI+LDD; group C (n = 35): SI (control). Prior intervention, at 3 and 6 months after therapy, probing pocket depths, clinical attachment level, number of treated sites with bleeding on probing (n BOP), full mouth plaque and bleeding scores (gingival bleeding index, %BOP) were recorded. At the same time points, 8 periodontopathogens were quantitatively determined. All three treatments resulted in statistically significant improvements (p < 0.05) of all clinical parameters without statistically significant intergroup differences (p > 0.05). Several bacterial species were reduced in both test groups, with statistically significantly higher reductions for LDD compared to PDT and the control group. In conclusion, the present data indicate that: (a) In periodontal patients enrolled in SPT, treatment of persistent/recurrent pockets with SI alone or combined with either PDT or LDD may lead to comparable clinical improvements and (b) the adjunctive use of LDD appears to provide better microbiological improvements for some periodontal pathogens than SI alone or combined with PDT.

scholarly journals Gingival crevicular fluid level of soluble triggering recep-tor expressed on myeloid cells-1(strem-1) in periodontal health and disease: a case-control study

2017 ◽  
Vol 5 (2) ◽  
pp. 83
Author(s):  
Surabhi Gigras ◽  
Sudhir R Patil ◽  
Veena HR ◽  
Sneha Dani
Keyword(s):  
Chronic Periodontitis ◽  
Myeloid Cells ◽  
Cell Surface Receptor ◽  
Periodontal Health ◽  
Group Iii ◽  
Root Planing ◽  
Group I ◽  
Health And Disease ◽  
Group Ii ◽  
Crevicular Fluid

Background: The Triggering Receptor Expressed On Myeloid Cells-1(TREM-1) is a cell-surface receptor of the immunoglobulin superfamily and found to be involved in the amplification of the inflammatory response to various microbial infections, including periodontal diseases.Objectives: The present study was designed to examine gingivalcrevicular fluid(GCF) levels of soluble TREM-1 (sTREM-1) levels in periodontal health and disease as well as evaluate the effect of scaling and/or root planing on the same.Methods: Based on gingival index, probing pocket depth, clinical attachment level, and radiologic parameters (bone loss), 45 subjects were initially divided into three groups- Group, I (Periodontally healthy), Group II (Gingivitis) and Group III (Chronic Periodontitis).From each of the subjects, GCF sample was collected at baseline and scaling and/or root planing was instituted in group II and group III patients. GCF samples were subsequently collected at eight-week interval. Levels of sTREM-1 in collected GCF samples were estimated using enzyme-linked immunosorbent assay.Results: The lowest GCF levels of sTREM-1 were found in periodontal health (69.50±1.8pg/ml) followed by gingivitis (257.17±79pg/ml) and chronic periodontitis (3658.14±55pg/ml) in increasing order, suggesting that levels of sTREM-1 in crevicular fluid increased with the severity of periodontal disease. sTREM-1 levels decreased significantly from baseline to the end of 8 weeks following non-surgical periodontal therapy.Conclusion: Increased GCF levels of sTREM-1 from periodontal health to disease strengthen its association with periodontal status.

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