Efeito imunomodulador e atividade antimicrobiana de heterofucanas de Sargassum filipendula

Fucans, sulphated polysaccharides that contain L-fucose in its constitution, obtained from species of Phaeophyceae of the Sargassum kind, display several biological activities. Heterofucans from Sargassum filipendula are bioactive molecules that contain strong antiproliferative and antioxidant activity. However, their immunomodulatory and antimicrobial activities have not yet been examined. In this context, the aim of this research was to evaluate the heterofucans as for their immunomodulatory capacity and antimicrobial action against Leishmania infantum, Trichomonas vaginalis, Staphylococcus epidermidis and Klebsiella pneumonia (KPC). The five heterofucans obtained from S. filipendula show activities that are distant as stimulants of the immune system and microbial agent. The SF0.5V, SF0.7V amd SF1.0V heterofucans were capable of acting in the activation of murine and human macrophages. In addition to that, SF0.5V has shown antibiofilm activity of S. epidermides and SF0.7V and 1.0V almost completely inhibited the survival of the protozoan T. vaginalis. Results such as this one, reflect the broad range of action of the sulphated polysaccharides obtained from seaweeds, especially from the species S.filipendula