Mediators of Inflammation

Mediators of Inflammation / 2003 / Article

Open Access

Volume 12 |Article ID 735813 |

Sharon E. Jacob, Mehdi Nassiri, Francisco A. Kerdel, Vladimir Vincek, "Simultaneous measurement of multiple Th1 and Th2 serum cytokines in psoriasis and correlation with disease severity", Mediators of Inflammation, vol. 12, Article ID 735813, 5 pages, 2003.

Simultaneous measurement of multiple Th1 and Th2 serum cytokines in psoriasis and correlation with disease severity


Background: Psoriatic plaques have been shown to contain increased levels of proinflammatory cytokines. Serum levels of interleukin (IL)-6, IL-7, IL-8, and interferon (IFN)-γ have been reported elevated in psoriatic patients.Aim: To evaluate serum cytokine profiles in psoriasis patients by improved enzyme-linked immunosorbent assay (ELISA) technique and to correlate these levels with disease severity.Methods: We analyzed single serum samples from 10 patients with active untreated psoriasis, two patients with active treated psoriasis, and five healthy volunteers for major T helper type 1 and T helper type 2 cytokines using the LINCOplex ELISA multi-analyte detection system that permits simultaneous detection of multiple cytokines from a single sample. The disease severity, including erythema, induration, scale, and surface area, was assessed.Results: IFN-γ was markedly elevated in all sera from psoriasis patients, 33.8±1.3 pg/ml (mean±standard error) versus 8±1.5 pg/ml for normal controls (P<0.01), and positively correlated with all indices of disease severity (Spearman r>0.6). IL-8 was also increased in psoriasis patients (24.4±1.8 pg/ml) versus normal controls (3.6±1.2 pg/ml) (p<0.05) and positively correlated with the degree of erythema (Spearman r>0.6). Mean IL-12 levels were decreased in sera from psoriasis patients (8.5±1.2 pg/ml) compared with normal controls (42.2±5.3 pg/ml) (P<0.01). Also, serum IL-10 levels were below detection levels in psoriatics compared with controls (6.4±1.3 pg/ml).Conclusions: This new ELISA system allowed rapid and reliable detection of numerous cytokines in single serum samples from patients with psoriasis. We observed that IFN-γ and IL-8 cytokines were elevated in psoriatics and correlated with parameters of disease severity while IL-10 and IL-12 were decreased.

Copyright © 2003 Hindawi Publishing Corporation. 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.

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