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Susceptibilidad de Trypanosoma cruzi a diferentes venenos de serpientes de Costa Rica
Susceptibility of Trypanosoma cruzi to different Costa Rican snake venoms
Se evaluaron los efectos tóxicos de los venenos de cinco serpientes costarricenses en cuanto a su capacidad tripanocida contra dos cepas de Trypanosoma cruzi y sus efectos en cuanto a los mecanismos de muerte celular. ...
Ability of fucoidan to prevent muscle necrosis induced by snake venom myotoxins: comparison of high- and low-molecular weight fractions
Fucoidan, a natural polysaccharide extracted from brown seaweed, inhibits the myotoxic phospholipases A2 present in the venoms of crotalid snakes. This study evaluated the influence of molecular weight on the ability of ...
Differential susceptibility of C2C12 myoblasts and myotubes to group II phospholipase A2 myotoxins from crotalid snake venoms
Group II phospholipase A2 (PLA2) myotoxins isolated from Viperidae/Crotalidae snake venoms induce a rapid cytolytic effect upon diverse cell types in vitro. Previous studies suggested that this effect could be more ...
Catalytically inactive phospholipase A2 homologue binds to vascular endothelial growth factor receptor-2 via C-terminal loop region
VEGF (vascular endothelial growth factor) regulates neovascularization through binding to its receptorKDR(kinase insert domaincontaining receptor; VEGF receptor-2). We recently identified a catalytically inactive PLA2 ...
Human heterophilic antibodies against equine immunoglobulins: assessment of their role in the early adverse reactions to antivenom administration
The presence of human heterophilic antibodies against horse immunoglobulins (HHA-HI) was determined by ELISA in sera from healthy volunteers and from patients who received equine antivenom for therapy of snake bite ...
Acute-phase reactions, including cytokines, in patients bitten by Bothrops and Crotalus snakes in Brazil
Thirty-one patients bitten by venomous snakes in Botucatu area (State of São Paulo - Brazil), sixteen by Bothrops spp. and fifteen by Crotalus durissus terrificus, were studied. The group comprised twenty-nine males and ...
Phospholipase A2 and inflammation
Pathobiological activities of human group II phospholipase A2 in inflammation: do they all depend on its enzymatic action?
Increased expression of secreted group II phospholipase A 2 (sPLA2) is associated with inflammation 1.This enzyme can promote a variety of potentially harmful events, which have been attributed to its catalytic activity. ...
Purification and characterization of myotoxin IV, a phospholipase A2 variant, from Bothrops asper snake venom
A basic myotoxic protein was purified from Bothrops asper venom. Like other basic Bothrops myotoxins, myotoxin IV induces acute muscle damage after intramuscular injection in mice and disrupts negatively charged liposomes ...
Bactericidal activity of Lys49 and Asp49 myotoxic phospholipases A2 from Bothrops asper snake venom: synthetic Lys49 myotoxin II-(115-129)-peptide identifies its bactericidal region
Mammalian group-II phospholipases A2 (PLA2) of inflammatory fluids display bactericidal properties, which are dependent on their enzymatic activity. This study shows that myotoxins II (Lys49) and III (Asp49), two group-II ...
Biochemistry and toxicology of toxins purified from the venom of the snake Bothrops asper
The isolation and study of individual snake venom components paves the way for a deeper understanding of the pathophysiology of envenomings – thus potentially contributing to improved therapeutic modalities in the clinical ...