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There is raised interest in the involvement of interleukin-(IL-)23/T-helper 17 cells (Th17) axis in the pathogenesis of psoriasis. Objectives. To compare the effect of narrow band ultraviolet B (NB-UVB) and methotrexate (MTX) therapy on serum levels of IL-17 and IL-23 in psoriatic patients. Methods. Thirty patients with severe plaque psoriasis were included: 15 patients received NB-UVB three times weekly (group I) and 15 patients received MTX 0.3 mg/kg per week (group II), both for 8 weeks. Before and after treatment, serum levels of IL-17 and IL-23 were investigated by ELISA technique and...

Polycomb group (PcG) proteins are well-conserved chromatin factors that repress the transcription of their target genes. They bind to the genome at specific sites and act on chromatin through the regulation of both post-translational histone modifications and higher-order chromatin structure. Aberrant expression of multiple PcG genes are implicated in different types of human cancers. PcGs are considered as novel prognostic markers both in terms of improving diagnosis as well as predicting patient response to treatment. Pharmacological targeting of PcG proteins is emerging as an attractive...