Influence of Insulin Resistance and TNF-α on the Inflammatory Process, Oxidative Stress, and Disease Activity in Patients with Rheumatoid Arthritis.

Abstract:

:The aim of this study was to evaluate the involvement of TNF-α and insulin resistance (IR) in the inflammatory process, oxidative stress, and disease activity in patients with rheumatoid arthritis (RA). This cross-sectional study included 270 subjects (control group, n = 97) and RA patients (n = 173). RA patients were divided into four groups: the first group without IR and not using antitumor necrosis factor-α (TNF-) (G1, IR- TNF-); the second group without IR and using anti-TNF-α (G2, IR- TNF+); the third group with IR and not using anti-TNF-α (G3, IR+ TNF-); and the fourth group with IR and using anti-TNF-α (G4, IR+ TNF+). G3 and G4 had higher (p < 0.05) advanced oxidation protein products (AOPPs) and oxidative stress index (OSI) compared to G1. G4 group presented higher (p < 0.05) AOPPs and OSI than G2. TRAP was significantly lower in G3 compared to G1. Plasma TNF-α levels were significantly higher in G4 and G2 compared to G1 (p < 0.0001) and G3 (p < 0.0001 and p < 0.01, resp.). The presence of insulin resistance was robustly associated with both oxidative stress and TNF-α levels. More studies are warranted to verify if IR can be involved in therapeutic failure with TNF-α inhibitors. This trial is registered with Brazilian Clinical Trials Registry Register number RBR-2jvj92.

journal_name

Oxid Med Cell Longev

authors

Costa NT,Veiga Iriyoda TM,Kallaur AP,Delongui F,Alfieri DF,Lozovoy MA,Amin RB,Delfino VD,Dichi I,Simão AN

doi

10.1155/2016/8962763

subject

Has Abstract

pub_date

2016-01-01 00:00:00

pages

8962763

eissn

1942-0900

issn

1942-0994

journal_volume

2016

pub_type

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