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Updated: Jul 21, 2026

Isolation, Processing and Analysis of Murine Gingival Cells
Published on: July 2, 2013
MicroRNAs in Gingival Crevicular Fluid: An Observational Case-Control Study of Differential Expression in
Pedro J Almiñana-Pastor1, Francisco M Alpiste-Illueca1, Pablo Micó-Martinez1
1Department of Stomatology, Faculty of Medicine and Odontology, University of Valencia, 46010 Valencia, Spain.
Objectives:
microRNAs (miRNAs) present in the gingival crevicular fluid (GCF) of patients with chronic periodontitis may serve as biomarkers of periodontal disease. The aim of this study was to perform a miRNA-sequencing study of all miRNAs present in GCF, comparing miRNA expression level profiles between advanced chronic periodontitis (CP) patients and healthy subjects (HS).
Materials And Methods:
GCF samples were collected from the single-rooted teeth of patients with severe CP (n = 11) and of HS (n = 12). miRNAs were isolated from GCF using an miRNeasy Serum/Plasma kit(Qiagen GmbH, Hilden, Germany). Reverse transcription polymerase chain reaction (qRT-PCR) was used to determine the expression levels of miRNA candidates involved in periodontal pathogenesis.
Results:
Of all the sequenced miRNAs, miR-199, miR-146a, miR-30a, and miR-338 were identified as best representing the CP patient samples. The validation study identified miR-199 as the most powerful biomarker used to define periodontitis.
Conclusions:
Upon sequencing all known miRNAs in GCF for the first time, we uncovered several potential biomarkers to define periodontitis. Identifying miRNAS in the GCF using high-throughput approaches will clarify the role of these molecules in periodontitis and provide biomarkers with potential applications.
Insights
Gingival crevicular fluid microRNAs (miRNAs) show promise as periodontal disease biomarkers. Sequencing identified miR-199 as a key indicator for chronic periodontitis, offering potential diagnostic applications.
Area of Science:
- Biomolecular research
- Oral health diagnostics
- Genomics
Background:
- MicroRNAs (miRNAs) in gingival crevicular fluid (GCF) are potential biomarkers for periodontal disease.
- Chronic periodontitis is a prevalent oral condition requiring accurate diagnostic tools.
Purpose of the Study:
- To conduct a comprehensive miRNA-sequencing of GCF.
- To compare miRNA expression profiles between chronic periodontitis (CP) patients and healthy subjects (HS).
Main Methods:
- GCF samples collected from severe CP patients (n=11) and HS (n=12).
- miRNAs isolated using an miRNeasy Serum/Plasma kit.
- Expression levels determined by reverse transcription quantitative polymerase chain reaction (qRT-PCR).
Main Results:
- Sequencing identified miR-199, miR-146a, miR-30a, and miR-338 in CP patient GCF.
- miR-199 demonstrated the highest potential as a biomarker for periodontitis.
Conclusions:
- This study is the first to sequence all known miRNAs in GCF.
- Identified potential GCF-derived miRNA biomarkers for periodontitis.
- High-throughput sequencing clarifies the role of miRNAs in periodontitis and their diagnostic potential.
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MicroRNAs
The Oral Microbiota

