4.4 Article

Positive association between leptin serum levels and disease activity on endoscopy in inflammatory bowel disease: A case-control study

Journal

EXPERIMENTAL AND THERAPEUTIC MEDICINE
Volume 15, Issue 4, Pages 3336-3344

Publisher

SPANDIDOS PUBL LTD
DOI: 10.3892/etm.2018.5835

Keywords

bowel disease; leptin; adipokines; inflammation; endoscopic activity

Funding

  1. CONACYT [CONACYTS-EP-CB-2009-01-0128567, -FOMIX-M0024-2013-01-203220, -SS/IMSS/ISSSTE-2010-138721, -SS/IMSS/ISSSTE-2012-01-181124, -INFR-2014-225520, INFR-2015-254106]
  2. Promotion of Quality Program (PFC) [CA-UAZ-207]

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Inflammatory bowel disease (IBD) includes ulcerative colitis (UC), Crohn's disease (CD) and indeterminate colitis. As these subtypes of IBD display important differences in the behavior of the natural course of the disease, the identification of non-invasive markers for IBD is important. The aim of the present study was to evaluate the serum levels of 10 adipokines and their association with endoscopic activity in IBD. The 10-protein profile (C-peptide, ghrelin, gastric inhibitory polypeptide, glucagon-like peptide-1, glucagon, insulin, leptin, plasminogen activator inhibitor-1, resistin and visfatin) was evaluated using serum from 53 participants (23 UC and 11 CD patients, as well as 19 controls) from Zacatecas (Mexico) by using the Bio-Plex Pro Human Diabetes 10-Plex Panel (Bio-Rad Laboratories, Inc.). Compared with those in the controls, leptin levels were significantly lower in patients with IBD (P=4.9x10(-4)). In addition, serum leptin displayed differences between groups with and without disease activity on endoscopy (P<0.001). Among the study population, serum leptin levels of <5,494 pg/ml significantly increased the odds of IBD by 12.8-fold [odds ratio (OR)=12.8, 95% confidence interval (CI)=3.04-53.9, P=0.001]. In addition, patients with serum leptin levels of <2,498 pg/ml displayed 5.8-fold greater odds of disease activity on endoscopy among the study population (OR=5.8, 95% CI=1.52-22.4, P=0.013). No differences in the serum levels of the remaining proteins were identified between the groups. Among the study population, serum leptin was associated with an increased risk of IBD and with disease activity on endoscopy. Additional studies will be necessary to validate the use of leptin as a non-invasive biomarker of IBD severity.

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