Effect of NB-UVB on levels of MCP-1 and CCR6 mRNA in patients with psoriasis vulgaris.The aim of this study is to explore the effect of narrow band ultraviolet B (NB-UVB) on the chemokine receptor CCR6 mRNA levels in patients with psoriasis.  Psoriasis area and severity index (PASI) values were recorded before and after the treatment with NB-UVB phototherapy of 30 psoriasis vulgaris patients.  Reduction of CCR6 level may be one of the mechanisms through which NB-UVB can treat psoriasis.
NB-UVB
The reverse transcription-polymerase chain reaction method was used to detect the expression level of CCR6 mRNA in peripheral blood mononuclear cells, and compared with 30 healthy subjects. 
reverse transcription-polymerase chain reaction