scholarly journals Oral Microbiome of Tobacco Smokers: A Shift in Composition

2018 ◽  
Vol 4 (Supplement 2) ◽  
pp. 57s-57s ◽  
Author(s):  
O. Ogba ◽  
J. Ewa ◽  
O. Olorode
Keyword(s):  
Oral Cancer ◽  
Oral Cavity ◽  
Tobacco Smoking ◽  
Lung Diseases ◽  
Color Change ◽  
Bacterial Colonization ◽  
Oral Microbiome ◽  
Periodontal Pathogens ◽  
Microbiological Techniques ◽  
Minimum Age

Background: The use of tobacco may affect the human oral microbiome resulting in numerous diseases including cancer. There are more than 1.3 billion tobacco smokers worldwide with 4.5 million adult Nigerians addressed as tobacco addicts. Tobacco smoking causes oral cancer, color change on the teeth, halitosis, periodontitis and other health implications. Aim: The study was aimed at determining the changes caused by tobacco smoking on the oral microbiome of cigarette smokers and the shift toward organisms that may cause oral cancer and lung diseases. Methods: One hundred and twenty subjects made of 60 tobacco smokers and 60 nonsmokers were enrolled for the study. Oral swabs were collected from the oral cavity of the subjects using sterile swab sticks under standard aseptic methods. The specimens were subjected to microscopy and culture. Organisms were identified using standard microbiological techniques. Results: The mean age of the subjects was 26.9 ± 3.4 years, with minimum age 18.0 years. There was a higher rate of bacterial colonization 86.7% among smokers than nonsmokers (χ2 = 299.0, P = 0.0002). Most members of the oral biofilm belonged to the Enterobacteriaceae with Klebsiella pneumoniae being the most prevalent isolate among smokers while Pseudomonas aeruginosa 4 (20.0%) were the most prevalent bacterial isolates among the control subjects. Tooth decay 19 (36.5%) was the oral cavity disorder among smokers associated with the highest number of isolates, followed by halitosis 18 (34.6%) and mouth ulcer 7 (13.4%). Halitosis was mostly associated with Candida species 5 (71.4%). There was a statistically significant association between oral cavity conditions and microbial isolates among smokers (χ2 = 299.0, P = 0.002). Conclusion: Smoking may have altered bacterial acquisition and oral mucosal colonization in favor of periodontal pathogens. This study have shown that smoking predisposes to oral cavity diseases which may predispose to oral cancer or lung diseases. The campaign against smoking should therefore be intensified as this may help to improve the oral health of smokers.

scholarly journals Role of Oral Microbiome Signatures in Diagnosis and Prognosis of Oral Cancer

2019 ◽  
Vol 18 ◽  
pp. 153303381986735 ◽  
Author(s):  
Indranil Chattopadhyay ◽  
Mukesh Verma ◽  
Madhusmita Panda
Keyword(s):  
Oral Cancer ◽  
Epithelial Cells ◽  
Oral Cavity ◽  
Bacterial Species ◽  
Treatment Strategies ◽  
Genetic Alterations ◽  
Oral Microbiome ◽  
Oral Carcinogenesis ◽  
Early Diagnostic

Despite advancement in cancer treatment, oral cancer has a poor prognosis and is often detected at late stage. To overcome these challenges, investigators should search for early diagnostic and prognostic biomarkers. More than 700 bacterial species reside in the oral cavity. The oral microbiome population varies by saliva and different habitats of oral cavity. Tobacco, alcohol, and betel nut, which are causative factors of oral cancer, may alter the oral microbiome composition. Both pathogenic and commensal strains of bacteria have significantly contributed to oral cancer. Numerous bacterial species in the oral cavity are involved in chronic inflammation that lead to development of oral carcinogenesis. Bacterial products and its metabolic by-products may induce permanent genetic alterations in epithelial cells of the host that drive proliferation and/or survival of epithelial cells. Porphyromonas gingivalis and Fusobacterium nucleatum induce production of inflammatory cytokines, cell proliferation, and inhibition of apoptosis, cellular invasion, and migration thorough host cell genomic alterations. Recent advancement in metagenomic technologies may be useful in identifying oral cancer–related microbiome, their genomes, virulence properties, and their interaction with host immunity. It is very important to address which bacterial species is responsible for driving oral carcinogenesis. Alteration in the oral commensal microbial communities have potential application as a diagnostic tool to predict oral squamous cell carcinoma. Clinicians should be aware that the protective properties of the resident microflora are beneficial to define treatment strategies. To develop highly precise and effective therapeutic approaches, identification of specific oral microbiomes may be required. In this review, we narrate the role of microbiome in the progression of oral cancer and its role as an early diagnostic and prognostic biomarker for oral cancer.

scholarly journals Screening and prophylaxis of periodontitis in the prevention of oral cavity cancer and its complications

2017 ◽  
Vol 63 (2) ◽  
pp. 73-79
Author(s):  
Iulia Cristina Micu ◽  
◽  
Alexandra Roman ◽  
Andrada Şoancă ◽  
Daniela Condor ◽  
...  
Keyword(s):  
Oral Cancer ◽  
Oral Cavity ◽  
Periodontal Disease ◽  
Negative Impact ◽  
Local Level ◽  
Systemic Disease ◽  
Blood Stream ◽  
The Body ◽  
Oral Microbiome ◽  
Rapid Progression

Periodontitis is a complex, multifactorial infectious disease, which affects a high proportion of the global population. Recent studies show that periodontal disease has strong negative impact on the homeostasis of the oral cavity but has also been associated with several systemic diseases. Although some correlation mechanisms between periodontitis and certain systemic disease have been described further extensive investigations are needed to establish causality. Periodontitis could be involved in the onset and progression of some types of cancers, especially oral cancer due to chronic inflammation. The release of citokines and inflammatory markers at a local level and in the blood stream can disregulate the variables of the body and can be directly involved in the mechanim of tumorigenesis. Another hypothesis relies on the role of disbiosis of the oral microbiome and the structural and functional alterations of the subgingival flora which define periodontitis in the oral cancer development. The prevalence of oral cancer is very high and continous increase at an alarming rate globally. The rapid progression and aggressive behavior of oral cancer, the high mortality rate, the comorbidities and negative effect on the quality of life after cancer treatment but most importantly the low survival rate on the long term highlight the need to supress all the potential risk factors in order to prevent this disease. Periodontal status evaluation and periodontal therapy should be initiated in patients undergoing cancer therapy in order to lower the risk of complications associated with radiation- and chemotherapy. Also on the long run treatment of periodontal disease could prevent the development of a new oropharyngial carcinoma.

The role of probiotics in correction of microbiocenosis and cytokine balance of the oral cavity of patient with chronic inflammatory disease of periodont

2020 ◽  
Vol 25 (4) ◽  
pp. 323-330
Author(s):  
E. S. Ovcharenko ◽  
V. V. Erichev ◽  
S. I. Risovannij ◽  
T. V. Aksenova ◽  
S. V. Melekhov ◽  
...  
Keyword(s):  
Oral Cavity ◽  
Periodontal Diseases ◽  
Treatment Protocol ◽  
Chronic Inflammatory Disease ◽  
Oral Microbiome ◽  
Comprehensive Treatment ◽  
Local Immunity ◽  
Treatment Techniques ◽  
Before And After

Relevance. A long-term inflammation in the oral cavity, unreasonable treatment of periodontal patients with antibiotics cause imbalance between certain types of fungal-bacterial associations accompanied by oral dysbiosis and change of local immune status. So, development and application of new comprehensive diagnosis and treatment techniques in periodontal patients, use of products for correction of microbiota and local immunity are a current and a long-term task. Purpose is to optimize the comprehensive treatment protocol of inflammatory periodontal diseases by introducing probiotics and evaluation of oral microbiome and cytokine profile.Materials and methods. 140 patients were examined. Of these 60 patients had chronic generalized plaque-induced gingivitis and 60 patients suffered from moderate chronic generalized periodontitis. Bacterial and fungal microbiome was assessed and the host immune response was evaluated in all patients before and after the treatment. Half of the patients were treated conventionally and the other half were treated according to a modified scheme: probiotic “Bifidumbacterin Forte” was added.Results. A large number of yeast-like fungi Candida and commensal bacteria were detected in periodontal pockets of patients with chronic generalized plaque-induced gingivitis and moderate chronic generalized periodontitis. That correlates with a significant increase of pro-inflammatory cytokines (TNF-α, IL—8), decrease of concentration of INF-γ and increase of antiinflammatory cytokine IL-4.Conclusion. Changes in clinical, microbiological and immunological values during a modified combination therapy with a probiotic and during a conventional treatment demonstrated that effectiveness of treatment of chronic gingivitis and chronic periodontitis increased by 40% and 37% respectively.

scholarly journals The impact of fixed orthodontic appliances on oral microbiome dynamics in Japanese patients

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Isamu Kado ◽  
Junzo Hisatsune ◽  
Keiko Tsuruda ◽  
Kotaro Tanimoto ◽  
Motoyuki Sugai
Keyword(s):  
Relative Abundance ◽  
Japanese Patients ◽  
Oral Microbiome ◽  
Orthodontic Appliances ◽  
Periodontal Pathogens ◽  
Supragingival Plaque ◽  
Fixed Orthodontic Appliances ◽  
Microbial Dna ◽  
The Impact ◽  
Level Analysis

AbstractFixed orthodontic appliances are common and effective tools to treat malocclusion. Adverse effects of these appliances, such as dental caries and periodontitis, may be associated with alteration of the microbiome. This study investigated the impact of these appliances on the dynamics of the oral microbiome. Seventy-one patients were selected. Supragingival plaque samples were collected before placement (T0) and six months after placement (T1). Saliva samples were collected at T0 and T1, and then when appliance removal (T2). Microbial DNA was analyzed by 16S rRNA meta-sequencing. The diversity analysis indicated dynamic changes in the structure of the oral microbiome. Taxonomic analysis at phylum level showed a significant increase in Bacteroidetes and Saccharibacteria (formally TM7) and decrease in Proteobacteria and Actinobacteria over time, in both plaque and saliva. Genus level analysis of relative abundance indicated a significant increase in anaerobic and facultative anaerobes in both plaque and saliva. Fixed orthodontic appliances induced measurable changes in the oral microbiome. This was characterized by an increase in relative abundance of obligate anaerobes, including periodontal pathogens. It can be concluded that this dysbiosis induced by fixed orthodontic appliances is likely to represent a transitional stage in the shift in microbiome from healthy to periodontitis.

scholarly journals Oral microbial dysbiosis and its performance in predicting oral cancer

2020 ◽  
Author(s):  
Shih-Chi Su ◽  
Lun-Ching Chang ◽  
Hsien-Da Huang ◽  
Chih-Yu Peng ◽  
Chun-Yi Chuang ◽  
...  
Keyword(s):  
Oral Cancer ◽  
Fusobacterium Nucleatum ◽  
Risky Behaviors ◽  
Health Condition ◽  
Oral Microbiome ◽  
Oral Microbiota ◽  
Microbial Dysbiosis ◽  
Anti Cancer ◽  
Betel Quid Chewing ◽  
Male Patients

Abstract Dysbiosis of oral microbiome may dictate the progression of oral squamous cell carcinoma (OSCC). Yet, the composition of oral microbiome fluctuates by saliva and distinct sites of oral cavity and is affected by risky behaviors (smoking, drinking and betel quid chewing) and individuals’ oral health condition. To characterize the disturbances in the oral microbial population mainly due to oral tumorigenicity, we profiled the bacteria within the surface of OSCC lesion and its contralateral normal tissue from discovery (n = 74) and validation (n = 42) cohorts of male patients with cancers of the buccal mucosa. Significant alterations in the bacterial diversity and relative abundance of specific oral microbiota (most profoundly, an enrichment for genus Fusobacterium and the loss of genus Streptococcus in the tumor sites) were identified. Functional prediction of oral microbiome shown that microbial genes related to the metabolism of terpenoids and polyketides were differentially enriched between the control and tumor groups, indicating a functional role of oral microbiome in formulating a tumor microenvironment via attenuated biosynthesis of secondary metabolites with anti-cancer effects. Furthermore, the vast majority of microbial signatures detected in the discovery cohort was generalized well to the independent validation cohort, and the clinical validity of these OSCC-associated microbes was observed and successfully replicated. Overall, our analyses reveal signatures (a profusion of Fusobacterium nucleatum CTI-2 and a decrease in Streptococcus pneumoniae) and functions (decreased production of tumor-suppressive metabolites) of oral microbiota related to oral cancer.

Possible translocation of periodontal pathogens into the lymph nodes draining the oral cavity

2012 ◽  
Vol 50 (5) ◽  
pp. 827-836 ◽  
Author(s):  
G. Amodini Rajakaruna ◽  
Makoto Umeda ◽  
Keisuke Uchida ◽  
Asuka Furukawa ◽  
Bae Yuan ◽  
...  
Keyword(s):  
Oral Cavity ◽  
Lymph Nodes ◽  
Periodontal Pathogens

Histopathological spectrum of oral cavity lesions – A tertiary care experience

2021 ◽  
Vol 8 (3) ◽  
pp. 364-368
Author(s):  
Ishani Gupta ◽  
Rekha Rani ◽  
Jyotsna Suri
Keyword(s):  
Squamous Cell Carcinoma ◽  
Retrospective Study ◽  
Oral Cancer ◽  
Oral Cavity ◽  
Cell Carcinoma ◽  
Squamous Cell ◽  
Tertiary Care ◽  
Proper Management ◽  
The World ◽  
One Year

Oral cancer is one of a major health problem in some parts of the world especially in the developing countries. Oral cancer is the sixth most common cancer in the world whereas in India it is one of the most prevalent cancer. Oral cavity lesions are usually asymptomatic. Accurate diagnosis of the lesion is the first step for the proper management of patients and histopathology is considered as the gold standard. The objective is to study the different patterns of oral cavity lesions seen in a tertiary care hospital of Jammu: One year retrospective study. Post graduate department of pathology.: It was a retrospective study carried out in a tertiary care centre for a period of one year from March 2020 to Feb 2021. 148 cases of oral cavity lesions were included in this study. The parameters that were included in the study were sociodemographic data, site of the lesion, clinical features and histological diagnosis. Data collected was analysed.148 cases of oral lesions were identified during the period of study. The age of patients varied from 5 to 78years and Male to Female ratio was 2.2:1. Buccal mucosa (30%) was the most common site involved which was followed by tonsil (19%). Out of 148 cases 70 cases were malignant, 10 cases pre malignant and 21 cases were benign. Squamous cell carcinoma (33.7%) was the most common lesion present in our study. Oral cavity lesions have a vast spectrum of diseases which range from tumour like lesions to benign and malignant tumours. Our study concluded that squamous cell carcinoma was the most common malignant lesion of oral cavity. Histological typing of the lesion is important for confirmation of malignancy and it is essential for the proper management of the patient.

Prevalence of microorganisms associated with feline gingivostomatitis

2018 ◽  
Vol 21 (2) ◽  
pp. 103-108 ◽  
Author(s):  
Hitoshi Nakanishi ◽  
Masaru Furuya ◽  
Takehisa Soma ◽  
Yoshiki Hayashiuchi ◽  
Ryusaku Yoshiuchi ◽  
...  
Keyword(s):  
Oral Cavity ◽  
Pasteurella Multocida ◽  
Age Distribution ◽  
Anaerobic Bacteria ◽  
Chronic Inflammatory Disease ◽  
Oral Microbiome ◽  
Pcr Assay ◽  
Significant Difference ◽  
Feline Herpesvirus ◽  
Positive Rate

Objectives Feline gingivostomatitis (FGS) is a painful chronic inflammatory disease of the oral cavity. The purpose of this study was to examine the frequency of detection of certain common feline bacteria and viruses to determine any potential associations with FGS. Methods A multicentre case-control study design was conducted. In total, 72 control cats and 32 cats with FGS were included in the study. Oral swabs were cultured for bacterial identification and a PCR assay was carried out to examine the infection of feline calicivirus (FCV), feline herpesvirus-1 (FHV-1), Chlamydia felis, Mycoplasma felis and Bordetella bronchiseptica. Results There was a significant difference in age distribution between the control and the FGS group. Based on a PCR assay, the positive rate of FCV was significantly higher in FGS cats than control animals. For other infectious pathogens, including FHV-1, C felis and M felis, there was no significant difference. Bacterial culture of oral swabs revealed that Pasteurella multocida was most frequently detected, but the detection rate was significantly lower in FGS cats. In FGS cats, the incidence of Enterococcus faecalis and anaerobic bacteria were more frequently isolated than in control cats. Conclusions and relevance This study indicates that the positive rate of FCV was significantly higher in cats with FGS, and the microflora of the oral cavity of cats with FGS might be disrupted, although additional studies are required to compare the oral microbiome in cats of a variety of ages.

scholarly journals AVALIAÇÃO DA AÇÃO DO USO DE DROGAS NA SAÚDE BUCAL DE DEPENDENTES QUÍMICOS

2013 ◽  
Vol 5 (1) ◽  
pp. 40-58 ◽  
Author(s):  
Daiane Mayara Alves ◽  
Gisele Alborghetti Nai ◽  
José Luiz Santos Parizi
Keyword(s):  
Elementary Education ◽  
Oral Cavity ◽  
Health Problem ◽  
Color Change ◽  
Psychosocial Care ◽  
Permanent Teeth

The use ofdrugs of abuseis apublic health problem. One of thedifficulties intreatingdrug usersis thelack of informationon the subjectfacingdentistry.This study aimed toassessthe oral conditionsofaddicts in treatment in Centersfor Psychosocial Care (CAPS IIAD). We performedan interview, examinationof the oral cavity, sialometryassessmentandoralpHin 60patients attendingtwo CAPS IIADin twocitiesin the stateof SãoPaulo, of both sexesandover 18 years old. The majority(28%) were agedbetween 41and 50 years, were male(85%) andhave elementary education(37%). Among those interviewed,98%reported that they hadbeen to the dentist. 22% did notbrush their teethand 95% did not flossing. The abuse drugsmore used were: alcohol (95%), cigarettes (85%), marijuana(48%) and cocaine/ crack/merla(40%). The oral routeisthe route of administrationof the drugmost frequently cited(51%). Hyposalivationwas diagnosedin 56% of patients and 12% hadacidic pH. The main visible changesin periodontalarea weregingival retraction, color change, plaque and calculussimultaneously (42%), anddental change wasexogenous pigmentation(15%). Only 2% had none decayed, restored,lostorextraction indicated in permanent teeth. All patients had multipleoral abnormalitiesassociated with use ofdrugs of abuse(such ashyposalivation, oralacidpH, exogenous pigmentation), and oral healthgreatlycompromised.

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