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Phospholipase A2 myotoxins from Bothrops snake venoms
(1995-11)
The genus Bothrops is distributed over all Latin America, From Mexico to Argentina, and comprises nearly 31 species of snake. In most of these countries, Bothrops spp. cause the majority of snake bit envenomations, which ...
Critical role of TLR2 and MyD88 for functional response of macrophages to a group IIA-Secreted phospholipase A2 from snake venom
(PLoS One 9(4):e93741, 2014-04-09)
The snake venom MT-III is a group IIA secreted phospholipase A2 (sPLA2) enzyme with functional and structural similarities with mammalian pro-inflammatory sPLA2s of the same group. Previously, we demonstrated that MT-III ...
Half a century of research on Bothrops asper venom variation: biological and biomedical implications
(2022)
Snake venoms are a complex biological mixture of proteins with or without enzymatic activity, peptides, and nucleotides, among other components. It is produced in specialized secretory glands located in the maxillary region, ...
Skeletal muscle necrosis and regeneration after injection of Thalassophryne nattereri (niquim) fish venom in mice
(2001-02)
Stings by Thalassophryne nattereri are responsible for envenomation of fishermen in north-eastern Brazil. Its venom induces prominent local tissue damage, characterized by pain, oedema and necrosis. The pathogenesis of ...
Mecanismo de açao dos venenos de cobras corais
(2016)
Os venenos apresentam um importante papel fisiológico para as serpentes: são os fatores responsáveis pela subjugação das presas, iniciam e auxiliam sua digestão e constituem um mecanismo de defesa contra predadores/agressores, ...
Phospholipase A2 enhances the endothelial cell detachment effect of a snake venom metalloproteinase in the absence of catalysis
(2015-10-05)
Microvessel disruption leading to hemorrhage stands among the most dangerous consequences of envenomings by snakes of the family Viperidae. A PIII metalloproteinase (SVMP), balteragin, purified from the venom of the snake ...
Hemostatic effects induced by Thalassophryne nattereri fish venom: a model of endothelium-mediated blood flow impairment.
(2002-08)
Accidents by Thalassophryne nattereri fish venom are characterised by severe local symptoms and signs including pain of fast onset, oedema and necrosis with impaired muscle regeneration. These effects have been related to ...
A snake venom secreted phospholipase A2 induces foam cell formation depending on the activation of factors involved in lipid homeostasis
(2018-06)
MT-III, a snake venom GIIA sPLA2, which shares structural and functional features with mammalian GIIA sPLA2s, activates
macrophage defense functions including lipid droplet (LDs) formation, organelle involved in both lipid ...
Cytotoxicity of snake venom Lys49 PLA2-like myotoxin on rat cardiomyocytes ex vivo does not involve a direct action on the contractile apparatus
(2021-09)
Viperid snake venoms contain a unique family of cytotoxic proteins, the Lys49 PLA2 homologs, which are devoid of enzymatic activity but disrupt the integrity of cell membranes. They are known to induce skeletal muscle ...
Development of immunoassays for determination of circulating venom antigens during envenomations by coral snakes (Micrurus species)
(1997-11)
A reverse agglutination assay and two capture enzyme-linked immunoassays (ELISAs) for the quantitative determination of Micrurus nigrocinctus nigrocinctus venom antigens in fluids were developed using affinity-purified ...