Abstract
The newborn larval stage of Trichinella spiralis enters the host striated skeletal muscle cell resulting in the formation of the nurse cell. Vascular Endothelial Growth Factor (VEGF) was detected in cells in the area immediately surrounding the nurse cells. However, no data are available on the antigens involved, the role of other angiogenic factors or the relationship of angiogenesis with Nitric Oxide (NO) production. Using macrophage cell culture we study the effect of different Trichinella L1 antigens from one encapsulated ( T. spiralis) and one non-encapsulated ( Trichinella pseudospiralis) on the expression of VEGF and basic Fibroblast Growth Factor (FGF2). Also, we investigate the relationship between the production of NO and angiogenic mediators. The results show that encapsulated and non-encapsulated Trichinella species are different in their capacity to stimulate the expression of VEGF and FGF2 from host macrophages. Finally, there is no relationship between angiogenic factors and NO production by T. spiralis antigen.
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