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FEBS Open Bio. 2017 Jun 5;7(7):981-994. doi: 10.1002/2211-5463.12238. eCollection 2017 Jul.

MicroRNA profiling in gingival crevicular fluid of periodontitis-a pilot study.

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Department of Respiratory Medicine Graduate School of Medicine The University of Tokyo Japan.
Division for Health Service Promotion The University of Tokyo Japan.
Division of Genomic Technologies (DGT) RIKEN Center for Life Science Technologies Yokohama Kanagawa Japan.
Department of Periodontology Graduate School of Medical and Dental Sciences Tokyo Medical and Dental University (TMDU) Japan.
Department of Mathematics Keio University Yokohama Kanagawa Japan.
Department of Biochemistry Nihon University School of Dentistry Tokyo Japan.
Department of Biochemistry Ohu University School of Pharmaceutical Sciences Koriyama Fukushima Japan.


Periodontitis is a chronic inflammatory disease that affects the interface of teeth and surrounding tissues. Gingival crevicular fluid (GCF) is an exudate of the periodontal tissues and can be collected from the gap between the tooth and gum (gingival sulcus or periodontal pocket) with paper strips. Testing of GCF is a low-cost and minimally invasive procedure. In a variety of diseases, microRNAs (miRNAs) in body fluids are implicated in pathogenesis, and are suggested as potential diagnostic biomarkers. Here, we profiled miRNAs in GCF (two chronic periodontitis, one aggressive periodontitis, and five healthy subjects) using miRCURY LNA™ Universal RT microRNA PCR System, which yielded quantitative measures of more than 600 miRNAs. Through this analysis, we found that miRNA profiles in GCF of periodontitis patients are distinct from those of healthy controls. We further selected 40 miRNAs and confirmed their differential expression patterns in different subjects (five chronic periodontitis, one aggressive periodontitis, and six healthy subjects) using a custom miRNA PCR panel. This is the first demonstration of miRNA profiling in GCF and its alteration in periodontitis. Our findings suggest that a subset of miRNAs in GCF holds potential as a biomarker for periodontitis.


gingival crevicular fluid; microRNA; periodontal pocket; periodontitis

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