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Disease Markers
Volume 2016, Article ID 4801418, 12 pages
http://dx.doi.org/10.1155/2016/4801418
Review Article

Cytokine Profile in Chronic Periodontitis Patients with and without Obesity: A Systematic Review and Meta-Analysis

1Department of Periodontology, Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia
2Department of Periodontology, Faculty of Dentistry, Ziauddin University, Karachi, Pakistan
3Department of Prosthetic Dental Sciences, College of Dentistry, King Saud University, Riyadh, Saudi Arabia
4Department of Restorative Dentistry, Faculty of Dentistry, MARA University of Technology, Selangor, Malaysia
5Department of General Dentistry, Eastman Institute for Oral Health, University of Rochester, Rochester, NY 14620, USA

Received 23 May 2016; Accepted 25 August 2016

Academic Editor: Benoit Dugue

Copyright © 2016 Zohaib Akram et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

To investigate the cytokine profile as biomarkers in the gingival crevicular fluid (GCF) of chronic periodontitis (CP) patients with and without obesity, MEDLINE/PubMed, EMBASE, ScienceDirect, and SCOPUS databases were combined with handsearching of articles published from 1977 up to May 2016 using relevant MeSH terms. Meta-analyses were conducted separately for each of the cytokines: resistin, adiponectin, TNF-α, leptin, IL-6, IL-8, and IL-1β. Forest plots were produced reporting standardized mean difference of outcomes and 95% confidence intervals. Eleven studies were included. Three studies showed comparable levels of leptin among obese and nonobese patients with CP. Four studies reported comparable levels of interleukin- (IL-) 6 and resistin whereas five studies reported comparable levels of adiponectin. Two studies reported similar levels of CRP in patients with periodontitis with and without obesity. One study showed higher levels of tumor necrosis factor-alpha in obese patients with CP. One study showed higher levels of IL-1β and IL-8 in obese patients with CP. The level of localized periodontal inflammation may have a greater influence on the GCF proinflammatory biomarker levels as compared to systemic obesity. Whether patients having chronic periodontitis with obesity have elevated proinflammatory GCF biomarkers levels compared to nonobese individuals remains debatable.