| ORIGINAL ARTICLE |
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| Year : 2016 | Volume
: 29
| Issue : 4 | Page : 818-825 |
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Study of interleukin-22 in patients with psoriasis in Menoufia University Hospitals
Ghada R El-Hendawy1, Ahmed A Salama1, Mohamed A Gaber2, Eman Mhros MBBCH 1
1 Department of Microbiology and Immunology, Faculty of Medicine, Menoufia University, Menoufia, Egypt
2 Department of Dermatology and Venereology, Faculty of Medicine, Menoufia University, Menoufia, Egypt
Correspondence Address:
Eman Mhros
Shebin El Kom City, Menoufia Governorate, 32511
Egypt
 Source of Support: None, Conflict of Interest: None  | Check |
DOI: 10.4103/1110-2098.202485
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Objectives
The aim of this study was to detect a relation between serum levels of interleukin-22 (IL-22) in patients with psoriasis and also to detect a relation of IL-22 with psoriasis area and severity index (PASI).
Background
IL-22 is highly expressed in several different chronic inflammatory conditions, including psoriasis, inflammatory bowel disease, and rheumatoid arthritis. The best studied function for IL-22 is within the skin, as it has an inflammatory role during skin inflammation.
Materials and methods
The study was conducted on 40 patients with psoriasis and 20 age-matched and sex-matched healthy individuals. All patients were subjected to history taking and complete medical examination. Serum levels of IL-22 were measured by enzyme-linked immunosorbent assay technique. Serum levels of IL-22 were statistically analyzed in relation to PASI.
Results
The serum levels of IL-22 were highly elevated in patients with psoriasis compared with healthy people (P < 0.001). The serum IL-22 was significantly higher in patients with severe psoriasis as compared with those with mild and moderate psoriasis. The serum levels of IL-22 were significantly higher in patients with psoriasis experiencing itching as compared with those not experiencing itching (P < 0.001). There was no statistically significant difference between the serum levels of IL-22 and smoking.
Conclusion
The significant elevation in the serum level of IL-22 in patients with psoriasis when compared with that of healthy controls and the significant elevation in the serum levels of IL-22 with advanced PASI score are suggestive of IL-22 playing a fundamental role in pathogenesis of psoriasis. |
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