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In vitro hemolytic activity of Bothrops lanceolatus (fer-de-lance) venom J. Venom. Anim. Toxins incl. Trop. Dis.
Martins,LJ; de Araújo,PMF; Bon,C; Hyslop,S; de Araújo,AL.
Bothrops lanceolatus venom contains a variety of enzymatic and biological activities. The present work investigated the hemolytic activity of this venom and its phospholipase A2 (PLA2). Bothrops lanceolatus venom (6.7 µg/mL) caused indirect hemolysis of cow, horse, rat and sheep erythrocytes, with horse erythrocytes being the most sensitive; no direct hemolysis was observed. Hemolysis in sheep erythrocytes was concentration-dependent (5-11.7 µg/mL) and markedly attenuated by heating the venom for 30 minutes at ≥ 40°C and by the PLA2 inhibitor p-bromophenacyl bromide. An acidic PLA2 (5 µg/mL) purified from B. lanceolatus venom also caused hemolysis. This PLA2 showed immunoprecipitin lines with antivenom against B. lanceolatus, which suggests that the...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Bothrops lanceolatus; Hemolytic activity; Phospholipase A2; Snake venom.
Ano: 2009 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1678-91992009000300011
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Acute hepatotoxicity of Crotalus durissus terrificus (South American rattlesnake) venom in rats J. Venom. Anim. Toxins incl. Trop. Dis.
França,RF; Vieira,RP; Ferrari,EF; Souza,RA; Osorio,RAL; Prianti-Jr,ACG; Hyslop,S; Zamuner,SR; Cogo,JC; Ribeiro,W.
Venom of the South American rattlesnake, Crotalus durissus terrificus (Cdt), presents myotoxic and neurotoxic outcomes, but reports on its effects on the liver are scarce. This study examined the hepatotoxicity resulting from Cdt venom administration (100, 200 and 300 µg/kg) in male Wistar rats. Animals were studies at 3, 6, 9 and 12 hours after venom injection. The hepatotoxicity was assessed through serum levels of aspartate aminotransferase (AST), alanine aminotransferase (ALT), alkaline phosphatase (AP), gamma glutamyl transferase (GGT), bilirrubin and also by histopathological evaluation. All the different concentrations of Cdt venom resulted in increased levels of hepatic enzymes, when compared with the control group, except for the 100 µg/kg dose,...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Crotalus durissus terrificus; Hepatotoxicity; Histology; AST; ALT; Rattlesnake; Liver enzymes; Venom.
Ano: 2009 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1678-91992009000100007
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