Journal
MEDIATORS OF INFLAMMATION
Volume 2017, Issue -, Pages -Publisher
HINDAWI LTD
DOI: 10.1155/2017/5385102
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Funding
- Medical University of Lublin [DS462/2016]
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Psoriasis is a chronic inflammatory disease mediated by T cell immunity. Programmed death 1 (PD-1), a coinhibitory receptor, plays an important role in immune regulation and maintaining peripheral tolerance. The aim of the study was to compare the expression of PD-1 on the peripheral T cells between psoriatic patients and healthy controls. The study included 75 psoriatic patients and 52 healthy volunteers. The percentages and absolute numbers of CD3(+), CD4(+), CD8(+), CD4(+) PD-1(+), and CD8(+) PD-1(+) T cells were analyzed using flow cytometry. The absolute numbers and percentages of CD4(+) PD-1(+) and CD8(+) PD-1(+) T cells were significantly decreased in the psoriatic patients in comparison with the control group. No significant correlations were found between the absolute numbers and percentages of CD4+ PD-1(+) or CD8(+) PD-1(+) T cells and clinical characteristics of psoriasis. Decreased PD-1 expression on the T cells may be responsible for impaired negative regulation of immune response in psoriasis pathogenesis.
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