- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT03558906
TNF-α/HIF-1α/VEGF Pathway in Periodontal Diseases
Gingival Crevicular Fluid and Salivary HIF-1α, VEGF and TNF-α Levels in Different Periodontal Diseases
Study Overview
Status
Conditions
Detailed Description
Study Population and Clinical Examination
Eighty-seven participants were recruited for the study. Exclusion criteria were as follows: 1) systemic diseases that could affect the periodontium; 2) smoking; 3) current pregnancy or lactation; 4) nonsurgical/surgical periodontal treatment received for the past year; and 5) use of anti-inflammatory and antibiotic drugs within the past 6 months.
The full-mouth clinical periodontal examination included measurement of probing depth (PD), clinical attachment level (CAL), presence of bleeding on probing (BOP), gingival index (GI) and plaque index (PI) at 6 sites per tooth. Presence and extent of alveolar bone loss were assessed radiographically. Based on clinical and radiographic diagnostic criteria proposed by 1999 International Workshop for a Classification of Periodontal Diseases and Conditions, the participants were categorized into four groups.
I. Generalized aggressive periodontitis (GAgP) group (n=20). These individuals had minimum PD ≥6 mm and CAL ≥5 mm on eight or more teeth; at least three of these were other than central incisors or first molars. Radiographic alveolar bone loss was ≥30% of root length affecting at least three permanent teeth other than first molars and incisors. The severe destruction pattern was not commensurate with amount of plaque accumulation or other local risk factors for a given age.
II. Chronic periodontitis (CP) group (n=20). These individuals had at least four non-adjacent teeth with sites with PD ≥6 mm and CAL ≥5 mm. They had also ≥50% alveolar bone loss in at least two quadrants that was commensurate with amount of plaque accumulation. BOP was >50% in the whole mouth.
III. Gingivitis group (n=26). These individuals had varying degrees of gingival inflammation. They exhibited no sites with CAL >2 mm and no detectable alveolar bone loss in the radiography. BOP was >50% in the whole mouth.
IV. Healthy group (n=21). These periodontally healthy volunteers exhibited no sites with PD >3 mm and CAL >2 mm as well as no radiographic evidence of alveolar bone loss. BOP was <15% in the whole mouth.
Saliva sampling
Whole unstimulated saliva samples were collected. Each participant was asked first to rinse the mouth completely with tap water for 2 minutes, wait for 10 minutes, and then expectorate into sterile polypropylene tube for 5 minutes.
Gingival crevicular fluid (GCF) sampling
Standardized filter paper strips were used for GCF sampling. Two GCF samples were taken from the buccal aspects of two non-adjacent interproximal sites of each individual. In patients with periodontitis, GCF were sampled from two sites exhibiting PD ≥6 mm and CAL ≥5 mm. GCF samples of gingivitis patients were obtained from the sites that exhibit BOP but no clinical attachment loss. In the healthy group, GCF samples were collected the sites exhibiting PD <3 mm without BOP and clinical attachment loss.
Measurement of hypoxia inducible factor-1 alpha (HIF-1α), vascular endothelial growth factor (VEGF) and tumor necrosis factor-alpha (TNF-α) Levels in GCF and Saliva Samples
HIF-1α, VEGF and TNF-α levels in GCF and saliva samples were measured by the enzyme-linked immunosorbent assay (ELISA) using commercial kits according to the manufacturer's guidelines.
Statistical Analysis
All data analyses were performed using a statistical software package. Comparisons of clinical and biochemical parameters between the study groups were performed using the Kruskal-Wallis test.
Study Type
Enrollment (Actual)
Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Sampling Method
Study Population
Description
Inclusion Criteria:
- Systemically healthy individuals
- Non-smoker individuals
Exclusion Criteria:
- Current pregnancy or lactation
- Nonsurgical/surgical periodontal treatment received for the past year
- Use of anti-inflammatory and antibiotic drugs within the past 6 months.
Study Plan
How is the study designed?
Design Details
- Observational Models: Case-Control
- Time Perspectives: Cross-Sectional
Cohorts and Interventions
Group / Cohort |
---|
Aggressive Periodontitis
These individuals had minimum PD ≥6 mm and CAL ≥5 mm on eight or more teeth; at least three of these were other than central incisors or first molars.
Radiographic alveolar bone loss was ≥30% of root length affecting at least three permanent teeth other than first molars and incisors.
The severe destruction pattern was not commensurate with amount of plaque accumulation.
|
Chronic periodontitis
These individuals had at least four non-adjacent teeth with sites with PD ≥6 mm and CAL ≥5 mm.
They had also ≥50% alveolar bone loss in at least two quadrants that was commensurate with amount of plaque accumulation.
BOP was >50% in the whole mouth.
|
Gingivitis
Gingivitis patients exhibited no sites with CAL >2 mm and no detectable alveolar bone loss in the radiography.
BOP was >50% in the whole mouth.
|
Healthy
Periodontally healthy volunteers exhibited no sites with PD >3 mm and CAL >2 mm as well as no radiographic evidence of alveolar bone loss.
BOP was <15% in the whole mouth.
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Gingival crevicular fluid HIF-1α levels
Time Frame: A day after clinical periodontal examination
|
pg
|
A day after clinical periodontal examination
|
Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Salivary HIF-1α levels
Time Frame: A day after clinical periodontal examination
|
pg/ml
|
A day after clinical periodontal examination
|
Gingival crevicular fluid VEGF levels
Time Frame: A day after clinical periodontal examination
|
ng
|
A day after clinical periodontal examination
|
Salivary VEGF levels
Time Frame: A day after clinical periodontal examination
|
ng/l
|
A day after clinical periodontal examination
|
Collaborators and Investigators
Sponsor
Publications and helpful links
Study record dates
Study Major Dates
Study Start (Actual)
Primary Completion (Actual)
Study Completion (Actual)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Actual)
Study Record Updates
Last Update Posted (Actual)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Additional Relevant MeSH Terms
Other Study ID Numbers
- bafacan357
Drug and device information, study documents
Studies a U.S. FDA-regulated drug product
Studies a U.S. FDA-regulated device product
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
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