sulfated galactan from palisada flagellifera inhibits toxic effects of lachesis muta snake venom

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ID: 184908
2015
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Abstract
In Brazil, snakebites are a public health problem and accidents caused by Lachesis muta have the highest mortality index. Envenomation by L. muta is characterized by systemic (hypotension, bleeding and renal failure) and local effects (necrosis, pain and edema). The treatment to reverse the evolution of all the toxic effects is performed by injection of antivenom. However, such therapy does not effectively neutralize tissue damage or any other local effect, since in most cases victims delay seeking appropriate medical care. In this way, alternative therapies are in demand, and molecules from natural sources have been exhaustively tested. In this paper, we analyzed the inhibitory effect of a sulfated galactan obtained from the red seaweed Palisada flagellifera against some toxic activities of L. muta venom. Incubation of sulfated galactan with venom resulted in inhibition of hemolysis, coagulation, proteolysis, edema and hemorrhage. Neutralization of hemorrhage was also observed when the galactan was administered after or before the venom injection; thus mimicking a real in vivo situation. Moreover, the galactan blocked the edema caused by a phospholipase A2 isolated from the same venom. Therefore, the galactan from P. flagellifera may represent a promising tool to treat envenomation by L. muta as a coadjuvant for the conventional antivenom.
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Authors ;Ana Cláudia Rodrigues da Silva;Luciana Garcia Ferreira;Maria Eugênia Rabello Duarte;Miguel Daniel Noseda;Eladio Flores Sanchez;André Lopes Fuly
Journal jixie gongcheng xuebao/journal of mechanical engineering
Year 2015
DOI
10.3390/md13063761
URL
http://www.mdpi.com/1660-3397/13/6/3761
Keywords Keywords not found

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