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  • Title: [Expression of iNOS and HIF-1α with angiogenesis in affected skin biopsies from patients with psoriasis].
    Author: Li Y, Zhang G, Xiao R, Chen H, Wen H.
    Journal: Zhong Nan Da Xue Xue Bao Yi Xue Ban; 2010 Sep; 35(9):952-7. PubMed ID: 20871160.
    Abstract:
    OBJECTIVE: To investigate the expression of inducible nitric oxide synthase (iNOS) and hypoxia-inducible factor 1(HIF-1) α in psoriatic lesions,and to explore their relationship with angiogenesis in psoriasis. METHODS: HIF-1α and iNOS protein were detected by immunohistochemistry and Western blot in 32 cases of psoriasis and 20 healthy controls,and CD34 marking vascular endothelial cells were used to measure the microvascular density (MVD). RESULTS: The expressions of HIF-1α and iNOS protein were very weak in the control skin, but very strong in psoriatic lesions, which showed significant difference in the expressions of iNOS and HIF-1α between the psoriasis and the control group(P<0.05). Expression of HIF-1α (r=0.743, P<0.01) and iNOS (r=0.639,P<0.01) had positive correlation with MVD in psoriasis respectively. There was a positive correlation between iNOS and HIF-1α expression in psoriasis (r=0.717, P<0.01). CONCLUSION: Both iNOS and HIF-1α have high expression in psoriasis and might play an important role in the genesis and development of psoriasis.
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