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  • Title: Antilonomic effects of Brazilian brown seaweed extracts.
    Author: Domingos TF, Carvalho C, Moura Lde A, Teixeira VL, Pereira RC, Bianco EM, Ferreira WJ, Ramos CJ, de Miranda AL, Melo PA, Guimarães JA, Fuly AL.
    Journal: Nat Prod Commun; 2009 Aug; 4(8):1075-8. PubMed ID: 19768986.
    Abstract:
    The aim of this work was to investigate the hemolysis and blood clotting activity of Lomonia obliqua venom and the ability of some Brazilian marine algal extracts (Canistrocarpus cervicornis, Stypopodium zonale and Dictyota pfaffi) to antagonize such biological activities. L. obliqua caterpillars are dangerous to human beings and envenomation symptoms are characterized by hemorrhagic, hemolytic and blood clotting disorders, and acute renal failure, which sometimes lead to the death of the victims. Through in vitro experiments we have shown that L. obliqua venom is able to clot human plasma and hemolize human erythrocytes and that the coagulation activity of the venom is inhibited by the extracts of C. cervicornis, S. zonale and D. pfaffi. In contrast, C. cervicornis and S. zonale extracts did not inhibit the hemolytic activity of L. oblqua, as did the extract of D. pfaffi. These finding indicate that marine algae may be used as antivenoms or may contribute to the development of compounds with antilonomic effects.
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