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- W1986834181 abstract "Background Psoriasis (PS) is a common chronic, relapsing, immune-mediated disease involving the skin and joints of genetically predisposing individuals. Despite numerous studies, the pathogenesis of PS has not been fully elucidated. However, many pathogenic theories have been suggested. There is much evidence that PS is a polygenic disease modified to expression by triggering factors. PS is characterized by hyperproliferation and abnormal differentiation of epidermal keratinocytes, lymphocyte infiltration consisting mostly of T lymphocytes, and various endothelial vascular changes in the dermal layer, such as angiogenesis, dilation, and high endothelial venule formation. Vascular endothelial growth factor (VEGF) is a major regulator of physiological and pathological angiogenesis, causing aberrant angiogenesis and vascular leakage in the upper dermis; it may also contribute to keratinocyte proliferation and epidermal barrier homeostasis in PS. Inducible nitric oxide synthase (iNOS) was found to be expressed in the keratinocytes of psoriatic lesions; in addition, there is increased expression of iNOS-specific mRNA transcripts. Survivin upregulation in psoriatic lesion in comparison with normal skin was evident, suggesting its role in the pathogenesis of PS. The aim of this study was to investigate the immunohistochemical expression of VEGF, survivin, and iNOS in psoriatic skin and to detect their role in the pathogenesis of PS. Patients and methods This study was carried out on 20 patients with PS vulgaris. Immunohistochemical reactions were carried out using the streptavidin-biotin immunoperoxidase system in this study to detect the extent of expression of VEGF, survivin, and iNOS in each specimen of the skin biopsy. Results A strong VEGF expression through the epidermis (mean 46.4 19.7) was observed. VEGF was significantly upregulated in psoriatic skin in comparison with normal healthy skin ( P P P Conclusion VEGF, survivin, and iNOS appeared to be important factors in the pathogenesis of PS." @default.
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- W1986834181 date "2014-01-01" @default.
- W1986834181 modified "2023-09-26" @default.
- W1986834181 title "Role of vascular endothelial growth factor, survivin, and inducible nitric oxide synthase expression in psoriasis: an immunohistochemical study" @default.
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- W1986834181 doi "https://doi.org/10.4103/1110-6530.137262" @default.
- W1986834181 hasPublicationYear "2014" @default.
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