Gene Expression Profiles in Generalized Aggressive Periodontitis: A Gene Network-based Microarray Analysis

In this study, the investigators evaluated molecular biomarkers which play a role in the development of generalized aggressive periodontitis (GAgP) using gingival tissue samples through omics-based whole-genome transcriptomic while using healthy individuals as background controls.

Study Overview

• Status: Completed
• Conditions: Generalized Aggressive Periodontitis

Detailed Description

Aggressive periodontitis (AgP) is an inflammatory periodontal disease which is complex, multifactorial, and destructive. Progression and severity of the disease depend on interacting risk factors such as: immunological, microbiological, environmental, and genetic factors, as well as age, sex, and race.Some patients are genetically predisposed to AgP; they have immunological abnormalities, which are thought to be under genetic control. However, high susceptibility for periodontal destruction and the relationship between inflammatory changes, and genetic factors remain unclear.

Gene expression profiling is a powerful means of generating comprehensive genome-level data sets on diseases such as cancer, asthma, rheumatoid disorders and periodontitis, and provides significant insight information for these diseases. Gene expression profiling may provide an evidence for involving genes in the pathogenesis of AgP and generate further information other than clinical signs and symptoms of AgP.

The aim of this study was to identify gene-expression patterns of patients with generalized aggressive periodontitis by whole-transcriptome gene-expression analyses.

• Study Type: Observational
• Enrollment (Actual): 60

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 18 years to 35 years (Adult)
• Accepts Healthy Volunteers: Yes
• Genders Eligible for Study: All

• Sampling Method: Probability Sample

Study Population

Aggressive periodontitis patients: The periodontal diagnosis of subjects with GAgP was established on the basis of clinical and radiographic criteria and was defined by the 1999 International World Workshop for a Classification of Periodontal Diseases and Conditions.(Lang et al., 1999) Patients were included if they were between 18 and 35 years of age and otherwise healthy. The bone loss estimation was radiographically performed in each patient for the assessment of the extent and severity of alveolar bone loss.

Description

Inclusion Criteria:

• The periodontal diagnosis of subjects with GAgP was established on the basis of clinical and radiographic criteria and was defined by the 1999 International World Workshop for a Classification of Periodontal Diseases and Conditions.(Lang et al., 1999) Patients were included if they were between 18 and 35 years of age and otherwise healthy. The bone loss estimation was radiographically performed in each patient for the assessment of the extent and severity of alveolar bone loss.

Exclusion Criteria:

• Subjects were excluded if they had any known systemic diseases or conditions that can/could influence the periodontal status (cancer, cardiovascular and respiratory diseases), any history of hepatitis and/or HIV infection, immunosuppressive chemotherapy, current pregnancy, planning a pregnancy or lactation, requirement for antibiotic prophylaxis, oral diseases other than GAgP, ongoing orthodontic therapy, a history of antibiotic therapy, or periodontal treatment within the preceding six months.

Study Plan

How is the study designed?

Number of groups / cohorts

2

Cohorts and Interventions

Group / Cohort
Patients with Aggressive Periodontitis; The periodontal diagnosis of subjects with GAgP was established on the basis of clinical and radiographic criteria and was defined by the 1999 International World Workshop for a Classification of Periodontal Diseases and Conditions.(Lang et al., 1999)
Controls; Control subjects had no radiographic evidence of bone loss or any sign of past and present periodontitis.

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Time Frame
mRNA quantification	2 months

Secondary Outcome Measures

Outcome Measure	Time Frame
Definition of gen networking and new molecular pathways	2 months

Collaborators and Investigators

• Sponsor: Kocaeli University
• Investigators: Principal Investigator: ESRA GUZELDEMIR-AKCAKANAT, DDS, PhD, Kocaeli University

Publications and helpful links

General Publications

• Kinane DF, Shiba H, Hart TC. The genetic basis of periodontitis. Periodontol 2000. 2005;39:91-117. doi: 10.1111/j.1600-0757.2005.00118.x. No abstract available.
• Demmer RT, Behle JH, Wolf DL, Handfield M, Kebschull M, Celenti R, Pavlidis P, Papapanou PN. Transcriptomes in healthy and diseased gingival tissues. J Periodontol. 2008 Nov;79(11):2112-24. doi: 10.1902/jop.2008.080139.
• Papapanou PN, Abron A, Verbitsky M, Picolos D, Yang J, Qin J, Fine JB, Pavlidis P. Gene expression signatures in chronic and aggressive periodontitis: a pilot study. Eur J Oral Sci. 2004 Jun;112(3):216-23. doi: 10.1111/j.1600-0722.2004.00124.x.

Study record dates

Study Major Dates

• Study Start: February 1, 2013
• Primary Completion (Actual): September 1, 2014
• Study Completion (Actual): December 1, 2014

Study Registration Dates

• First Submitted: December 17, 2014
• First Submitted That Met QC Criteria: December 24, 2014
• First Posted (Estimate): December 30, 2014

Study Record Updates

• Last Update Posted (Estimate): December 30, 2014
• Last Update Submitted That Met QC Criteria: December 24, 2014
• Last Verified: December 1, 2014

More Information

Terms related to this study

• Keywords: microarray analysis; generalized aggressive periodontitis
• Additional Relevant MeSH Terms: Behavioral Symptoms; Stomatognathic Diseases; Periodontal Diseases; Mouth Diseases; Aggression; Periodontitis; Aggressive Periodontitis
• Other Study ID Numbers: KOU KAEK2013/15