Subgingival biodiversity in subjects with uncontrolled type-2 diabetes and chronic periodontitis

Study information

Reviewed Marked as Reviewed by Shaimaa Elsafoury on 2021/02/09

study design

case-control

Citation

PMID PubMed identifier for scientific articles.

22762355

DOI Digital object identifier for electronic documents.

10.1111/j.1600-0765.2012.01498.x

URI

Authors

Casarin RC, Barbagallo A, Meulman T, Santos VR, Sallum EA, Nociti FH, Duarte PM, Casati MZ, Gonçalves RB

Journal

Journal of periodontal research

Year

2013

BACKGROUND AND OBJECTIVE: There is a bidirectional relationship between periodontal disease and type-2 diabetes mellitus (DM). Inflammatory mediators may negatively affect glycemic control, and increased glucose levels and resultant glycation end-products may alter the host response against bacterial infection. However, no agreement has been reached regarding the effect of DM on periodontal subgingival microbiota. Therefore, the purpose of the present study was to compare the subgingival biodiversity in deep periodontal pockets of subjects with chronic periodontitis and either uncontrolled type-2 diabetes or no diabetes using 16S rRNA gene cloning and sequencing. MATERIAL AND METHODS: Twelve subjects with uncontrolled type-2 diabetes (glycated hemoglobin > 8%) and eleven nondiabetic subjects presenting severe and generalized chronic periodontitis were selected. Subgingival biofilm from periodontal pockets > 5 mm were assessed using the 16S rRNA gene cloning and sequencing technique. RESULTS: Significant differences were observed in subgingival microbiota between diabetic and nondiabetic subjects. Diabetic subjects presented higher percentages of total clones of TM7, Aggregatibacter, Neisseria, Gemella, Eikenella, Selenomonas, Actinomyces, Capnocytophaga, Fusobacterium, Veillonella and Streptococcus genera, and lower percentages of Porphyromonas, Filifactor, Eubacterium, Synergistetes, Tannerella and Treponema genera than nondiabetic individuals (p < 0.05). Moreover, some phylotypes, such as Fusobacterium nucleatum, Veillonella parvula, V. dispar and Eikenella corrodens were detected significantly more often in diabetic subjects than in nondiabetic subjects (p < 0.05). CONCLUSION: Subjects with uncontrolled type-2 diabetes and chronic periodontitis presented significant dissimilarities in subgingival biodiversity compared with nondiabetic subjects.

Experiment 1

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Curated date: 2021/01/10

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Revision editor(s): WikiWorks, Rimsha, Claregrieve1, Victoria

Subjects

Location of subjects: Brazil

Host species Species from which microbiome was sampled. Contact us to have more species added.: Homo sapiens

Body site Anatomical site where microbial samples were extracted from according to the Uber Anatomy Ontology: Subgingival dental plaque Subgingival plaque,Subgingival dental plaque,subgingival dental plaque

Condition The experimental condition / phenotype studied according to the Experimental Factor Ontology

Group 0 name Corresponds to the control (unexposed) group for case-control studies: Non-diabetic

Group 1 name Corresponds to the case (exposed) group for case-control studies: Diabetic

Group 1 definition Diagnostic criteria applied to define the specific condition / phenotype represented in the case (exposed) group: chronic periodontitis, according to the criteria of the 1999 International Classification; the presence of at least 15 teeth; >= 30% of the sites and at least nine teeth pre-senting a probing pocket depth of >= 5 mm with bleeding on probing (with two or more of these teeth having a probing pocket depth of >= 7 mm); uncontrolled type-2 DM, determined by a glycated hemoglobin (HbA1c) concentration of > 8%

Group 0 sample size Number of subjects in the control (unexposed) group: 11

Group 1 sample size Number of subjects in the case (exposed) group: 12

Antibiotics exclusion Number of days without antibiotics usage (if applicable) and other antibiotics-related criteria used to exclude participants (if any): 3 months

Lab analysis

Sequencing type: 16S

16S variable region One or more hypervariable region(s) of the bacterial 16S gene: Not specified

Sequencing platform Manufacturer and experimental platform used for quantifying microbial abundance: Illumina

Statistical Analysis

Data transformation Data transformation applied to microbial abundance measurements prior to differential abundance testing (if any).: raw counts

Statistical test: T-Test

Significance threshold p-value or FDR threshold used for differential abundance testing (if any): 0.05

MHT correction Have statistical tests be corrected for multiple hypothesis testing (MHT)?: No

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Reviewed Marked as Reviewed by Shaimaa Elsafoury on 2021/02/09

Curated date: 2021/01/10

Curator: Yaseen Javaid

Revision editor(s): WikiWorks

Source: Table 2 & Table 3 & text

Description: Subgingival biodiversity in subjects with uncontrolled type-2 diabetes and chronic periodontitis.

Abundance in Group 1: increased abundance in Diabetic

NCBI	Quality Control	Links
Actinomycetota
Deferribacterota
Bacillota
Fusobacteriota
Pseudomonadota
Streptococcus mitis
Fusobacterium nucleatum
Veillonella parvula
Veillonella dispar
Eikenella corrodens
Aggregatibacter
Neisseria
Gemella
Eikenella
Actinomyces
Capnocytophaga
Fusobacterium
Veillonella
Streptococcus
Selenomonas

Revision editor(s): WikiWorks

Signature 2

Edit History Delete

Flag for review

Your review change was submitted

Reviewed Marked as Reviewed by Shaimaa Elsafoury on 2021/02/09

Curated date: 2021/01/10

Curator: Yaseen Javaid

Revision editor(s): WikiWorks

Source: Table 2 & Table 3 & text

Description: Subgingival biodiversity in subjects with uncontrolled type-2 diabetes and chronic periodontitis.

Abundance in Group 1: decreased abundance in Diabetic

NCBI	Quality Control	Links
Bacteroidota
Spirochaetota
Synergistota
Filifactor alocis
Porphyromonas gingivalis
Eubacterium
Filifactor
Porphyromonas
Peptostreptococcaceae
Tannerella forsythia
Tannerella
Treponema

Revision editor(s): WikiWorks