Abstract

The neural system appears before the vascular system in the phylogenetic tree. During evolution, vascular system generation takes advantage of the pre-existing vascular endothelial growth factor (VEGF) in order to form its networks. Nevertheless, the role of VEGF in neuronal and glial cells is not yet completely understood. In order to support the hypothesis of a neural role for VEGF, we searched for VEGF- and VEGF receptor (VEGFR)-like immunoreactivities (immunohisto/cytochemistry and Western blotting) in the eyestalk of the invertebrate Ucides cordatus (Crustacea, Brachyura, Ucididae). Our results showed that both neurons and glial cells expressed VEGF-immunoreactivity, and that VEGFR was evidenced in neural cells. This is the first report about the VEGF/VEGFR-like immunoreactivities in the nervous tissue of a crustacean, and enables U. cordatus to be included in the repertoire of animal models used for ascertaining the role of VEGF in the nervous system.

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