scholarly journals Comparison of Blood Bacterial Communities in Periodontal Health and Periodontal Disease

2021 ◽  
Vol 10 ◽  
Author(s):  
David C. Emery ◽  
Tanya L. Cerajewska ◽  
Joon Seong ◽  
Maria Davies ◽  
Alex Paterson ◽  
...  
Keyword(s):  
Periodontal Disease ◽  
Periodontal Diseases ◽  
Bacterial Species ◽  
Oral Bacteria ◽  
Bacterial Cells ◽  
Periodontal Health ◽  
True Nature ◽  
Bacterial Dna ◽  
Total Dna ◽  
Microbiome Data

The use of Next Generation Sequencing (NGS) techniques has generated a wide variety of blood microbiome data. Due to the large variation in bacterial DNA profiles between studies and the likely high concentrations of cell-free bacterial DNA in the blood, it is still not clear how such microbiome data relates to viable microbiota. For these reasons much remains to be understood about the true nature of any possible healthy blood microbiota and of bacteraemic events associated with disease. The gut, reproductive tracts, skin, and oral cavity are all likely sources of blood-borne bacteria. Oral bacteria, especially those associated with periodontal diseases, are also commonly associated with cardiovascular diseases such as infective endocarditis, and also have been linked to rheumatoid arthritis and Alzheimer’s disease. Periodontal treatment, dental probing, and toothbrushing have been shown to cause transient bacteraemia and oral bacteria from the phyla Firmicutes (e.g. Streptococci) and Bacteroidetes (e.g. Porphyromonas) are found in cardiovascular lesions (CVD). Many studies of blood bacterial DNA content however, find Proteobacteria DNA to be the dominant microbiome component, suggesting a gut origin. Most studies of this type use total DNA extracted from either whole blood or blood fractions, such as buffy coat. Here, using a method that purifies DNA from intact bacterial cells only, we examined blood donated by those with active, severe periodontitis and periodontally healthy controls and show that 43–52% of bacterial species in blood are classified as oral. Firmicutes, consisting largely of members of the Streptococcus mitis group and Staphylococcus epidermidis, were predominant at 63.5% of all bacterial sequences detected in periodontal health and, little changed at 66.7% in periodontitis. Compared to studies using total DNA Proteobacteria were found here at relatively low levels in blood at 13.3% in periodontitis and 17.6% in health. This study reveals significant phylogenetic differences in blood bacterial population profiles when comparing periodontal health to periodontal disease cohorts.

scholarly journals Impact of chronic stress on periodontal health

2018 ◽  
Vol 24 (1) ◽  
pp. 44-50 ◽  
Author(s):  
Mathieu Gunepin ◽  
Florence Derache ◽  
Marion Trousselard ◽  
Bruno Salsou ◽  
Jean-Jacques Risso
Keyword(s):  
Periodontal Disease ◽  
Chronic Stress ◽  
Negative Impact ◽  
Periodontal Diseases ◽  
Behavioral Changes ◽  
Educational Objective ◽  
Pathogenic Microorganisms ◽  
Periodontal Health ◽  
Response To Stress ◽  
The Impact

Introduction: Periodontal diseases are caused by pathogenic microorganisms that induce increases in of local and systemic proinflammatory cytokines, resulting in periodontal damage. The onset and evolution of periodontal diseases are influenced by many local and systemic risk factors. Educational objective: In this article, we aim to review the results of the research on the impact of chronic stress on the occurrence, development, and response to periodontal disease treatments and on the pathophysiological mechanisms of periodontal disease. Conclusion: Chronic stress has a negative impact on the occurrence, development, and response to the treatment of periodontal disease via indirect actions on the periodontium. This can result from behavioral changes caused by stress (poor dental hygiene, smoking, etc.) and a direct neuroimmunoendocrinological action related to the consequences (particularly immunological) of the secretion of certain chemicals (e.g., cortisol) induced by the activation of the hypothalamus and the autonomic nervous system in response to stress. These factors necessitate multidisciplinary management (e.g., physician, oral surgeon, and psychologist) of patients to identify subjects with chronic stress and to employ countermeasures to decrease the impact of stress on the periodontium.

scholarly journals Evaluating Flinders Technology Associates card for transporting bacterial isolates and retrieval of bacterial DNA after various storage conditions

2020 ◽  
Vol 13 (10) ◽  
pp. 2243-2251
Author(s):  
Azhar G. Shalaby ◽  
Neveen R. Bakry ◽  
Abeer A. E. Mohamed ◽  
Ashraf A. Khalil
Keyword(s):  
Nucleic Acid ◽  
Bacterial Species ◽  
Storage Conditions ◽  
Animal Origin ◽  
Cell Detection ◽  
Bacterial Cells ◽  
Gram Positive ◽  
Bacterial Dna ◽  
Gram Negative ◽  
Fta Cards

Background and Aim: Flinders Technology Associates (FTA) cards simplify sample storage, transport, and extraction by reducing cost and time for diagnosis. This study evaluated the FTA suitability for safe transport and storage of Gram-positive and Gram-negative bacterial cells of animal origin on its liquid culture form and from organ impression smears (tissues) under the same routine condition of microbiological laboratory along with detecting their nucleic acid over different storage conditions. Materials and Methods: Increase in bacterial count from 104 to 107 (colony-forming units/mL) of 78 isolates representing seven bacterial species was applied onto cards. FTA cards were grouped and inoculated by these bacteria and then stored at different conditions of 24-27°C, 4°C, and –20°C for 24 h, for 2 weeks, for 1 and 3 month storage, respectively. Bacteriological examination was done, after which bacterial DNA was identified using specific primers for each bacterial type and detected by polymerase chain reaction (PCR). Results: The total percentage of recovered bacteria from FTA cards was 66.7% at 24-27–C for 24 h, the detection limit was 100% in Gram-positive species, while it was 57.4% in Gram-negative ones. Regarding viable cell detection from organ impression smears, it was successful under the previous conditions. No live bacterial cells were observed by bacteriological isolation rather than only at 24-27°C for 24 h storage. All bacterial DNA were sufficiently confirmed by the PCR technique at different conditions. Conclusion: Overall, the FTA card method was observed to be a valid tool for nucleic acid purification for bacteria of animal origin in the form of culture or organ smears regardless of its Gram type and is used for a short time only 24 h for storage and transport of live bacteria specifically Gram-positive type. Moreover, the bacterial nucleic acid was intact after storage in –20°C for 3 months and was PCR amplifiable.

scholarly journals Antimicrobial and Substantivity Properties of Silver Nanoparticles against Oral Microbiomes Clinically Isolated from Young and Young-Adult Patients

2019 ◽  
Vol 2019 ◽  
pp. 1-14 ◽  
Author(s):  
León Francisco Espinosa-Cristóbal ◽  
Carolina Holguín-Meráz ◽  
Erasto Armando Zaragoza-Contreras ◽  
Rita Elizabeth Martínez-Martínez ◽  
Alejandro Donohue-Cornejo ◽  
...  
Keyword(s):  
Silver Nanoparticles ◽  
Young Adult ◽  
Dental Caries ◽  
Periodontal Disease ◽  
Dental Plaque ◽  
Bacterial Species ◽  
Inhibitory Effect ◽  
Oral Bacteria ◽  
Oral Microbiome ◽  
Oral Biofilms

The dental plaque is an oral microbiome hardly associated to be the etiological agent of dental caries and periodontal disease which are still considered serious health public problems. Silver nanoparticles (AgNPs) have demonstrated to have good antimicrobial properties affecting a wide variety of microorganisms, including oral bacteria; however, there is no scientific information that has evaluated the antimicrobial effect of AgNPs against clinical oral biofilms associated with dental caries and periodontal disease. The aim of this study was to determine the antimicrobial and substantivity effects of AgNPs in oral biofilms isolated clinically from patients with dental caries and periodontal disease. Sixty-seven young and young-adult subjects with dental caries and periodontal disease were clinically sampled through the collection of subgingival dental plaque. The inhibitory effect of AgNPs was performed with standard microbiological assays by triplicate using two sizes of particle. Polymerase chain reaction (PCR) assay was used to identify the presence of specific bacterial species. All AgNPs showed an inhibitory effect for all oral biofilms for any age and, generally, any gender (p>0.05); however, the effectiveness of the antimicrobial and substantivity effects was related to particle size, time, and gender (p<0.05). The identified microorganisms were S. mutans, S. sobrinus, S. sanguinis, S. gordonii, S. oralis, P. gingivalis, T. forsythia, and P. intermedia. The AgNPs could be considered as a potential antimicrobial agent for the control and prevention of dental caries and periodontal disease.

scholarly journals Rapid Multiplex Real-Time PCR Method for the Detection and Quantification of Selected Cariogenic and Periodontal Bacteria

Diagnostics ◽  
2019 ◽  
Vol 10 (1) ◽  
pp. 8 ◽  
Author(s):  
Jan Lochman ◽  
Martina Zapletalova ◽  
Hana Poskerova ◽  
Lydie Izakovicova Holla ◽  
Petra Borilova Linhartova
Keyword(s):  
Dental Caries ◽  
Real Time ◽  
Periodontal Diseases ◽  
Bacterial Species ◽  
Oral Bacteria ◽  
Periodontal Bacteria ◽  
Periodontal Inflammation ◽  
Specimen Collection ◽  
Significant Difference ◽  
Pcr Method

Dental caries and periodontal diseases are associated with a shift from symbiotic microbiota to dysbiosis. The aim of our study was to develop a rapid, sensitive, and economical method for the identification and quantification of selected cariogenic and periodontal oral bacteria. Original protocols were designed for three real-time multiplex PCR assays to detect and quantify the ratio of 10 bacterial species associated with dental caries (“cariogenic” complex) or periodontal diseases (red complex, orange complex, and Aggregatibacter actinomycetemcomitans). A total number of 60 samples from 30 children aged 2–6 years with severe early childhood caries and gingivitis were tested. In multiplex assays, the quantification of total bacterial (TB) content for cariogenic bacteria and red complex to eliminate differences in quantities caused by specimen collection was included. The mean counts for the TB load and that of ten evaluated specimens corresponded to previously published results. We found a significant difference between the microbial compositions obtained from the area of control and the affected teeth (p < 0.05). Based on this comprehensive microbiological examination, the risk of dental caries or periodontal inflammation may be determined. The test could also be used as a tool for behavioral intervention and thus prevention of the above-mentioned diseases.

scholarly journals Strategy for the Removal of Satellite Bacteria from the Cultivated Diatom

Diversity ◽  
2020 ◽  
Vol 12 (10) ◽  
pp. 382
Author(s):  
Yulia Zakharova ◽  
Artem Marchenkov ◽  
Nadezhda Volokitina ◽  
Aleksey Morozov ◽  
Yelena Likhoshway ◽  
...  
Keyword(s):  
Extracellular Polymeric Substances ◽  
High Throughput Sequencing ◽  
Single Cells ◽  
Axenic Culture ◽  
Blue Staining ◽  
Alcian Blue Staining ◽  
Bacterial Cells ◽  
Genetic Studies ◽  
Bacterial Dna ◽  
Total Dna

Multiple ecological and genetic studies of diatom algae require an axenic culture. However, algae-associated bacterial biofilms often form in diatom-produced mucus, both during creation of monoclonal cultures from single cells and during biomass growth, and they may be difficult to remove. In this work, we describe a protocol for removing associated bacteria from a monoclonal culture of Ulnaria danica isolated from Lake Baikal. The axenization strategy involves selecting the latent phase of diatom growth, multiple washes to remove extracellular polymeric substances and bacterial cells, filter deposition, and treatment with antibiotics that are not toxic for diatoms. The absence of bacteria during these stages was controlled by light microscopy with Alcian blue staining for mucus, epifluorescent microscopy with DAPI (4′,6-diamino-2-phenylindole) staining for bacterial DNA, and scanning electron microscopy of the diatom cell surface. High-throughput sequencing of a 16S rRNA fragment, amplified with universal bacterial primers, from total DNA of a final culture failed to detect any bacterial contamination, confirming successful axenization. A detailed comparative description of all stages of our protocol may prove useful in developing axenic cultures of other diatoms for various ecological and genetic studies.

scholarly journals The impact of smoking different tobacco types on the subgingival microbiome and periodontal health: a pilot study

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Sausan Al Kawas ◽  
Farah Al-Marzooq ◽  
Betul Rahman ◽  
Jenni A. Shearston ◽  
Hiba Saad ◽  
...  
Keyword(s):  
Periodontal Disease ◽  
United Arab Emirates ◽  
Dental Treatment ◽  
Periodontal Diseases ◽  
Oral Microbiome ◽  
Periodontal Health ◽  
Bacterial Gene ◽  
Microbiome Composition ◽  
Abundance And Diversity ◽  
The Impact

AbstractSmoking is a risk factor for periodontal disease, and a cause of oral microbiome dysbiosis. While this has been evaluated for traditional cigarette smoking, there is limited research on the effect of other tobacco types on the oral microbiome. This study investigates subgingival microbiome composition in smokers of different tobacco types and their effect on periodontal health. Subgingival plaques were collected from 40 individuals, including smokers of either cigarettes, medwakh, or shisha, and non-smokers seeking dental treatment at the University Dental Hospital in Sharjah, United Arab Emirates. The entire (~ 1500 bp) 16S rRNA bacterial gene was fully amplified and sequenced using Oxford Nanopore technology. Subjects were compared for the relative abundance and diversity of subgingival microbiota, considering smoking and periodontal condition. The relative abundances of several pathogens were significantly higher among smokers, such as Prevotella denticola and Treponema sp. OMZ 838 in medwakh smokers, Streptococcus mutans and Veillonella dispar in cigarette smokers, Streptococcus sanguinis and Tannerella forsythia in shisha smokers. Subgingival microbiome of smokers was altered even in subjects with no or mild periodontitis, probably making them more prone to severe periodontal diseases. Microbiome profiling can be a useful tool for periodontal risk assessment. Further studies are recommended to investigate the impact of tobacco cessation on periodontal disease progression and oral microbiome.

scholarly journals Application of nanoparticles in oral hygiene

2016 ◽  
Vol 3 (1-4) ◽  
pp. 35-49 ◽  
Keyword(s):  
Antimicrobial Activity ◽  
Antibiotic Resistance ◽  
Oral Hygiene ◽  
Periodontal Diseases ◽  
Bacterial Species ◽  
Metal Oxide Nanoparticles ◽  
Chemical Properties ◽  
Oral Bacteria ◽  
In Vivo Studies

Many of more than 700 bacterial species inhabiting the oral cavity are opportunistic pathogens causing systemic infections in addition to dental and periodontal diseases. This renders oral hygiene a much serious issue, which is further exacerbated with the emergence of multiple antibiotic resistance in oral bacteria. The role of nanoparticles based materials especially metal and metal oxide nanoparticles as an effective and alternative/supplementary antimicrobial agent is now well established. These nanoparticles could be a healthier, innocuous and effective alternative for controlling both the dental biofilms and oral planktonic bacterial population with lesser side effects or antibiotic resistance. Antimicrobial activity of these nanoparticles against a number of oral pathogens has already been demonstrated. When added to artificial dental materials and implants these nanoparticles improve the desirable physico-chemical properties of the materials in addition to improving their antimicrobial activity. Besides a few studies, biochemical processes underlying the antimicrobial activity of the nanoparticles against both planktonic cells and oral biofilms is not understood. Through our literature survey it is envisaged that ZnO nanoparticles and TiO2 nanoparticles are the most suitable nanoantibiotic for the development of dental pastes, mouthwashes, and other oral hygiene materials. However in vivo studies on nanotoxicity of these nanoparticles are missing and need a careful and balanced evaluation before successful clinical translations.

An update on non-surgical management of periodontal diseases

Dental Update ◽  
2019 ◽  
Vol 46 (10) ◽  
pp. 942-951
Author(s):  
Imogen Midwood ◽  
Penny Hodge
Keyword(s):  
Periodontal Disease ◽  
Surgical Management ◽  
Clinical Relevance ◽  
Periodontal Diseases ◽  
Periodontal Therapy ◽  
Periodontal Health ◽  
Restorative Treatment ◽  
Dental Practitioner ◽  
Term Maintenance

Non-surgical periodontal therapy (NSPT) underpins all other restorative treatment which takes place in the mouth. Therefore a thorough understanding of the process of delivery of effective NSPT and long-term maintenance of periodontal health is essential for every dental practitioner. This article covers the steps involved and discusses the benefits and challenges which may be encountered. CPD/Clinical Relevance: This article highlights the benefits and challenges of non-surgical management of periodontal disease and the key role that the patient plays in achieving and maintaining periodontal health.

scholarly journals Metagenomics: A New Realm of Uncultured Periodontal Microbes

2013 ◽  
Vol 3 (2) ◽  
pp. 36-40
Author(s):  
L Pathak
Keyword(s):  
Periodontal Disease ◽  
Nucleic Acids ◽  
Periodontal Diseases ◽  
Bacterial Species ◽  
Metagenomic Analysis ◽  
Oral Microbiota ◽  
Direct Examination ◽  
Dental Research ◽  
Cultural Methods

With over 400 bacterial species the periodontal microbiota has clearly a diverse ecology and uncultivated organisms are found to be associated with the periodontal diseases. Many efforts have been made to determine why so many bacterial species cannot be cultured on conventional bacteriological media and to develop new cultural methods for their isolation. In recent years, metagenomic analysis is available, based on the direct examination of nucleic acids from samples.This review will address the new dimensions of this novel procedure which will lead to a better understanding of the role of oral microbiota in periodontal disease. DOI: http://dx.doi.org/10.3329/bjdre.v3i2.16611 Bangladesh Journal of Dental Research & Education Vol.3(2) 2013: 36-40

scholarly journals Localised Aggressive Periodontitis – A Review

2021 ◽  
pp. 166-172
Author(s):  
Milind Wasnik ◽  
Suryakant Kumar ◽  
Arun Sajjanar ◽  
Niharika Gahlod ◽  
Sneha Khekade ◽  
...  
Keyword(s):  
Periodontal Disease ◽  
Alveolar Bone ◽  
Periodontal Diseases ◽  
Systemic Disease ◽  
Aggressive Periodontitis ◽  
Permanent Teeth ◽  
Periodontal Health ◽  
Attachment Loss ◽  
Localized Aggressive Periodontitis ◽  
Google Search

The term “periodontal diseases” includes any inherited or acquired disorders of the tissues that are supporting the teeth i. e Gingiva, Cementum, PDL, and Alveolar bone. The periodontal disease can be either localized or generalized. Localized aggressive periodontitis (LAgP) patients have interproximal attachment loss on at least two permanent first molars and incisors, with attachment loss on no more than two teeth other than first molars and incisors. In children and adolescents LAgP occurs without clinical evidence of systemic disease and it is characterized by the severe loss of alveolar bone around permanent teeth [10]. Most commonly the disease is localized to the permanent first molars and incisors. Aim: The aim of this review article is explain in details about aggressive periodontitis including different management aspect of the same. Methods: This paper presents a review of the aggressive periodontitis in children. An electronic search was conducted using Pub Med®/MEDLINE, and Google search using the terms: Periodontium, Localized Aggressive Periodontitis, Children and periodontal health, periodontal health in adolescents, gingival disease in children, periodontal disease in children,  gingivitis, periodontitis, gingival disease and its prevalence, periodontal disease and its prevalence.

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