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Open AccessArticle

Serum Levels of Interleukin-6 and Titers of Antibodies against Porphyromonas gingivalis Could Be Potential Biomarkers for the Diagnosis of Oral Squamous Cell Carcinoma

1
Department of Oral Pathology, School of Dentistry, Pusan National University, Yangsan 50612, Korea
2
Periodontal Disease Signaling Network Research Center, School of Dentistry, Pusan National University, Yangsan 50612, Korea
3
Department of Otorhinolaryngology-Head and Neck Surgery, School of Medicine and Biomedical Research Institute, Pusan National University, Yangsan 50612, Korea
4
Department of Statistics, College of Natural Science, Pusan National University, Busan 46241, Korea
5
Department of Oral and Maxillofacial Surgery, School of Dentistry, Pusan National University, Yangsan 50612, Korea
6
Dental and Life Science Institute, School of Dentistry, Pusan National University, Yangsan 50612, Korea
*
Authors to whom correspondence should be addressed.
Int. J. Mol. Sci. 2019, 20(11), 2749; https://doi.org/10.3390/ijms20112749
Received: 17 May 2019 / Accepted: 31 May 2019 / Published: 4 June 2019
(This article belongs to the Special Issue Chemokines in Cancer and Inflammatory Diseases)
It has been suggested that Porphyromonas gingivalis (P. gingivalis), a keystone pathogen in chronic periodontitis, is associated with a variety of cancers, including oral cancer. Recently, studies have shown the effects of persistent exposure to P. gingivalis on the promotion of tumorigenic properties of oral epithelial cells, suggesting that chronic P. gingivalis infection is a potential risk factor for oral cancer. On the other hand, Fusobacterium nucleatum (F. nucleatum), one of the major periodontal pathogens, has emerged as an important factor in the colon cancer progression. Here, we investigated the diagnostic potential of serum immunoglobulin G antibody against periodontal pathogens, P. gingivalis and F. nucleatum, and serum IL-6 for oral squamous cell carcinoma (OSCC). An enzyme-linked immunosorbent assay (ELISA) was used to determine and compare the serum levels of interleukin 6 (IL-6), F. nucleatum IgG, and P. gingivalis IgG in 62 OSCC patients with 46 healthy controls. The serum levels of P. gingivalis IgG and IL-6 were higher in OSCC patients than in non-OSCC controls, and the difference was statistically significant. In addition, a high serum level of IL-6 was associated with a worse prognosis in OSCC patients. Thus, P. gingivalis IgG and IL-6 could be utilized as potential serum biomarkers for the diagnosis of OSCC, and the serum level of IL-6 contributes to improved prognostic performance. View Full-Text
Keywords: Porphyromonas gingivalis; Fusobacterium nucleatum; immunoglobulin G; interleukin-6; oral squamous cell carcinoma; serum biomarkers Porphyromonas gingivalis; Fusobacterium nucleatum; immunoglobulin G; interleukin-6; oral squamous cell carcinoma; serum biomarkers
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Park, D.-G.; Woo, B.H.; Lee, B.-J.; Yoon, S.; Cho, Y.; Kim, Y.-D.; Park, H.R.; Song, J.M. Serum Levels of Interleukin-6 and Titers of Antibodies against Porphyromonas gingivalis Could Be Potential Biomarkers for the Diagnosis of Oral Squamous Cell Carcinoma. Int. J. Mol. Sci. 2019, 20, 2749.

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