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  • Title: Elevated levels of plasma VEGF in patients with dengue hemorrhagic fever.
    Author: Tseng CS, Lo HW, Teng HC, Lo WC, Ker CG.
    Journal: FEMS Immunol Med Microbiol; 2005 Jan 01; 43(1):99-102. PubMed ID: 15607642.
    Abstract:
    Vascular endothelial growth factor (VEGF) can be produced by monocytes and endothelial cells. It plays important role in angiogenesis and vascular permeability. The phenomenon of extensive plasma leakage into various serous cavities of the body is a cardinal symptom of dengue hemorrhagic fever (DHF). This study was performed to investigate the role of VEGF in patients with DHF. Plasma samples collected from the 53 dengue fever (DF) patients (including 14 patients with DHF), and 5 additional subjects with non-dengue febrile illness as controls were tested for VEGF levels using commercial enzyme-linked immunosorbent assay (ELISA) kits. The results showed that median plasma levels of VEGF in the patients with DHF (54.6 pg ml(-1)) were significantly higher than those of DF (14.6 pg ml(-1)) and control group (27.1 pg ml(-1)) (P<0.05). In addition, VEGF levels in DF patients were not significantly different from those of control patients with non-dengue febrile illness (P=0.17). Multiple regression analysis was used to analyze the clinical variables independently associated with VEGF levels. The data showed that D-dimer levels were significantly associated with VEGF levels. In this study, plasma VEGF levels in patients with DHF were significantly higher than values from DF patients. The association between increased plasma VEGF levels and increased plasma D-dimer levels in the patients with dengue illness suggests that activation of the fibrinolytic system may play a role in VEGF production in the patients with DF.
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