• Wound Repair Regen · Sep 2012

    Angiogenin expression in burn blister fluid: implications for its role in burn wound neovascularization.

    • Shin-Chen Pan, Li-Wha Wu, Chung-Lin Chen, Shyh-Jou Shieh, and Haw-Yen Chiu.
    • Institute of Clinical Medicine, College of Medicine, National Cheng Kung University, Tainan, Taiwan.
    • Wound Repair Regen. 2012 Sep 1;20(5):731-9.

    AbstractDeep partial thickness burn (DPTB) wound fluids have a greater propensity for establishing neovascularization than did superficial partial thickness burn (SPTB) wound fluids in our previous study. To investigate the factors responsible for this activity, cytokine array and enzyme-linked immunosorbent assay were used to perform an expression analysis of angiogenic factors in burn fluid. Although present in approximately equal amounts in both SPTB and DPTB blister fluids from burn patients, angiogenin does appear to be involved in the ability of DPTB blister fluid to promote neovascularization in vitro and in vivo. Angiogenin alone was sufficient to induce endothelial differentiation of circulating angiogenic cells (CAC) without vascular endothelial growth factor A involvement. In addition, angiogenin was positively associated with CAC differentiation in the burn blister fluid. Blocking the effect of angiogenin in burn blister fluids resulted in a significant reduction of endothelial cell proliferation, CAC differentiation, and new blood vessels formation in vivo. Moreover, immunohistochemistry revealed that high angiogenin expression colocalizes with high vascularity in human burn wounds at day 7, further supporting our hypothesis that angiogenin is involved in burn wound neovascularization.© 2012 by the Wound Healing Society.

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