Clin Psychopharmacol Neurosci.  2017 Feb;15(1):59-63. 10.9758/cpn.2017.15.1.59.

The Serum Levels of Resistin and Its Relationship with Other Proinflammatory Cytokines in Patients with Alzheimer's Disease

Affiliations
  • 1Department of Neurology, Faculty of Medicine, Süleyman Demirel University, Isparta, Turkey. sdndemirci@yahoo.com.tr
  • 2Department of Medical Microbiology, Faculty of Medicine, Süleyman Demirel University, Isparta, Turkey.
  • 3Department of Psychiatry, Faculty of Medicine, Süleyman Demirel University, Isparta, Turkey.

Abstract

OBJECTIVE: The present study aims to analyze the levels of resistin, tumor necrosis factor alpha (TNF-α), interleukin (IL)-1β, IL-6, IL-18, and C-reactive protein (CRP) in patients with Alzheimer's disease (AD) and also investigate a potential relationship between resistin levels and TNF-α, IL-1β, IL-6, IL-18, and CRP levels in patients with AD.
METHODS
The study included fifty patients with AD and 30 healthy controls with normal cognitive functions. The serum resistin, TNF-α, IL-1β, IL-6, IL-18, and CRP levels were assessed. We performed a Mini-Mental State Examination (MMSE) to evaluate the general cognitive performance.
RESULTS
The mean serum resistin, IL-1β, IL-18, and TNF-α levels were significantly higher in patients with AD compared with the controls (p=0.026, p=0.002, p=0.003, and p=0.038, respectively). The IL-6 and CRP levels did not differ between the groups (p=0.874 and p=0.941). The resistin levels were positively correlated with the levels of CRP and IL-18 (r=0.526, p<0.001; r=0.402, p=0.004, respectively). MMSE scores and inflammatory markers were not correlated (p>0.05 for all).
CONCLUSION
Serum resistin levels were significantly increased and correlated with some inflammatory markers in AD patients, suggesting that resistin might play a role in the inflammatory process of AD.

Keyword

Resistin; Inflammatory cytokines; Alzheimer disease; Inflammation
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