Magdalena Kutwin1, Monika Migdalska-Sęk2, Ewa Brzeziańska-Lasota2, Piotr Zelga3, Anna Woźniacka1. 1. Medical University of Lodz, Łódź, Poland (Department of Dermatology and Venereology). 2. Medical University of Lodz, Łódź, Poland (Department of Biomedicine and Genetics). 3. Medical University of Lodz, Łódź, Poland (Department of General and Colorectal Surgery).
Abstract
OBJECTIVES: As a chronic, recurrent, immunologically mediated systemic disease and a common cause of dermatological problems, psoriasis is often a subject of scientific research. Skin changes located on the hands can cause difficulties and limitations in the performance of professional activities, especially manual ones. The main role in pathogenesis is played by immunological factors - improper functioning of the components of the immune system, among others, T lymphocytes and cytokines like interleukin-12 (IL-12), interleukin-22 (IL-22) and interferon gamma (IFN-γ). MATERIAL AND METHODS: The obtained tissue and blood were destined for RNA isolation. The RNA was then subjected to a reverse transcription reaction. The relative gene expression level was evaluated by the real-time polymerase chain reaction for <i>IL-12B</i>, <i>IL-22</i> and <i>IFN-γ</i> genes, and presented as the relative quantification (RQ) value, relative to the reference gene <i>GAPDH</i>. In addition, a correlation analysis of the expression level of selected genes with the clinical course of the disease, as assessed by the <i>Psoriasis Area and Severity Index</i> (PASI), the<i> Body Surface Area</i> (BSA) and the <i>Dermatology Life Quality Index</i> (DLQI) scores was performed. RESULTS: Statistical analysis confirmed a significant increase in RQ values for<i> IL-12B</i>, <i>IL-22</i> and<i> IFN-γ</i> in the group of psoriatic patients vs. the control group. A positive correlation was also found between BSA and PASI and RQ for the <i>IL-12B</i> gene. CONCLUSIONS: Increased expression levels of <i>IL-12B</i>,<i> IL-22</i> and<i> IFN-γ</i> genes in psoriatic skin confirm that selected cytokines play an important role in the initiation and sustenance of psoriasis. Int J Occup Med Environ Health. 2020;33(5):635-47. This work is available in Open Access model and licensed under a CC BY-NC 3.0 PL license.
OBJECTIVES: As a chronic, recurrent, immunologically mediated systemic disease and a common cause of dermatological problems, psoriasis is often a subject of scientific research. Skin changes located on the hands can cause difficulties and limitations in the performance of professional activities, especially manual ones. The main role in pathogenesis is played by immunological factors - improper functioning of the components of the immune system, among others, T lymphocytes and cytokines like interleukin-12 (IL-12), interleukin-22 (IL-22) and interferon gamma (IFN-γ). MATERIAL AND METHODS: The obtained tissue and blood were destined for RNA isolation. The RNA was then subjected to a reverse transcription reaction. The relative gene expression level was evaluated by the real-time polymerase chain reaction for <i>IL-12B</i>, <i>IL-22</i> and <i>IFN-γ</i> genes, and presented as the relative quantification (RQ) value, relative to the reference gene <i>GAPDH</i>. In addition, a correlation analysis of the expression level of selected genes with the clinical course of the disease, as assessed by the <i>Psoriasis Area and Severity Index</i> (PASI), the<i> Body Surface Area</i> (BSA) and the <i>Dermatology Life Quality Index</i> (DLQI) scores was performed. RESULTS: Statistical analysis confirmed a significant increase in RQ values for<i> IL-12B</i>, <i>IL-22</i> and<i> IFN-γ</i> in the group of psoriaticpatients vs. the control group. A positive correlation was also found between BSA and PASI and RQ for the <i>IL-12B</i> gene. CONCLUSIONS: Increased expression levels of <i>IL-12B</i>,<i> IL-22</i> and<i> IFN-γ</i> genes in psoriatic skin confirm that selected cytokines play an important role in the initiation and sustenance of psoriasis. Int J Occup Med Environ Health. 2020;33(5):635-47. This work is available in Open Access model and licensed under a CC BY-NC 3.0 PL license.