Asia Pac Allergy. 2014 Oct;4(4):206-211. Roohi Rasool,1 Iram Ashiq,2 Irfan A Shera,1 Qayser Yousuf,3 and Zafar A Shah1 |
1Department of Immunology & Molecular Medicine, Sher-I-Kashmir Institute of Medical Sciences (SKIMS), Soura, Srinagar 190011, India. |
2Department of Clinical Biochemistry, University of Kashmir, Hazratbal, Srinagar 190006, India. |
3Department of Advanced Centre for Human Genetics, Sher-I-Kashmir Institute of Medical Sciences (SKIMS), Soura, Srinagar 190011, India. |
Abstract
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Background
Chronic urticaria is termed as idiopathic if there is an absence of any identifiable causes of mast cell and basophil degranulation. Various cytokines have been found to be involved in inflammatory processes associated with chronic idiopathic urticaria, including interleukin (IL) 18 and IL-6.
Objective
To evaluate any possible correlation of IL-18 and IL-6 cytokines with the clinical disease severity in chronic idiopathic urticaria (CIU).
Methods
IL-18 and IL-6 levels of CIU patients (n = 62) and healthy controls (n = 27) were assessed by commercially available enzyme linked immunosorbent assay kits following the manufacturer's protocols.
Results
Serum IL-18 concentration (mean ± standard deviation [SD], 62.95 ± 36.09 pg/mL) in CIU patients and in healthy controls (54.35 ± 18.45 pg/mL) showed no statistical significance (p > 0.05). No statistically significant difference (p > 0.05) was observed between autologous serum skin test (ASST) positive and ASST negative patients with regard to the serum IL-18 levels either. Similarly, serum IL-6 concentration (0.82 ± 4.6 pg/mL) in CIU patients and in healthy controls (0.12 ± 1.7 pg/mL), showed no statistical significance (p > 0.05). Also, comparison between positive and ASST negative patients with regard to the serum IL-6 levels was statistically nonsignificant (p > 0.05). However, statistical significance was found both in IL-18 and IL-6 concentrations in certain grades with regard to the clinical disease severity of urticaria.
Conclusion
There is no significant association as such found between IL-18 and IL-6 levels with CIU, however, these cytokines may help in predicting the clinical disease severity in CIU. Hence, these cytokines may indicate a potential role as a biomarker to assess the disease severity in CIU.
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Keywords: Interleukin-18, Interleukin-6, Chronic idiopathic urticaria, Autologous serum skin test, Enzyme linked immunosorbent assay
Correspondence: Roohi Rasool. Department of Immunology & Molecular Medicine, Sher-I-Kashmir Institute of Medical Sciences (SKIMS), Soura, Srinagar 190011, Kashmir, India. Tel: +91 194 2401013, Fax: +91 194 2403470, Email: roohi_wani@yahoo.com
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Received February 10, 2014; Accepted October 01, 2014.
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This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
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