An anti-interleukin-2 receptor drug attenuates T- helper 1 lymphocytes-mediated inflammation in an acute model of endotoxin-induced uveitis

PLoS One. 2014 Mar 3;9(3):e90216. doi: 10.1371/journal.pone.0090216. eCollection 2014.

Abstract

The aim of the present study was to evaluate the anti-inflammatory efficacy of Daclizumab, an anti-interleukin-2 receptor drug, in an experimental uveitis model upon a subcutaneous injection of lipopolysaccharide into Lewis rats, a valuable model for ocular acute inflammatory processes. The integrity of the blood-aqueous barrier was assessed 24 h after endotoxin-induced uveitis by evaluating two parameters: cell count and protein concentration in aqueous humors. The histopathology of all the ocular structures (cornea, lens, sclera, choroid, retina, uvea, and anterior and posterior chambers) was also considered. Enzyme-linked immunosorbent assays of the aqueous humor samples were performed to quantify the levels of the different chemokine and cytokine proteins. Similarly, a biochemical analysis of oxidative stress-related markers was also assessed. The inflammation observed in the anterior chamber of the eyes when Daclizumab was administered with endotoxin was largely prevented since the aqueous humor protein concentration substantially lowered concomitantly with a significant reduction in the uveal and vitreous histopathological grading. Th1 lymphocytes-related cytokines, such as Interleukin-2 and Interferon-γ, also significantly reduced with related anti-oxidant systems recovery. Daclizumab treatment in endotoxin-induced uveitis reduced Th1 lymphocytes-related cytokines, such as Interleukin-2 and Interferon gamma, by about 60-70% and presented a preventive role in endotoxin-induced oxidative stress. This antioxidant protective effect of Daclizumab may be related to several of the observed Daclizumab effects in our study, including IL-6 cytokine regulatory properties and a substantial concomitant drop in INFγ. Concurrently, Daclizumab treatment triggered a significant reduction in both the uveal histopathological grading and protein concentration in aqueous humors, but not in cellular infiltration.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Acute Disease
  • Animals
  • Antibodies, Monoclonal, Humanized / pharmacology
  • Daclizumab
  • Disease Models, Animal*
  • Endotoxins / toxicity*
  • Immunoglobulin G / pharmacology
  • Inflammation / immunology*
  • Male
  • Rats, Inbred Lew
  • Receptors, Interleukin-2 / antagonists & inhibitors*
  • Th1 Cells / drug effects*
  • Th1 Cells / immunology
  • Uveitis / chemically induced*
  • Uveitis / immunology

Substances

  • Antibodies, Monoclonal, Humanized
  • Endotoxins
  • Immunoglobulin G
  • Receptors, Interleukin-2
  • Daclizumab

Grants and funding

The work was supported in part by Grant no. PRUCHB06/09 and PRCEU-UCH 13/07 from the Fundación San Pablo to FBM and the Copernicus Santander Programme of the Universidad CEU Cardenal Herrera. The last corrections of the work (revision process) have been supported by Mutua Madrileña Institution. The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.