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Mostrando ítems 371-380 de 445
Isolation and biochemical, functional and structural characterization of a novel L-amino acid oxidase from Lachesis muta snake venom
(2012-12-01)
The aim of this study was the isolation of the LAAO from Lachesis muta venom (LmLAAO) and its biochemical, functional and structural characterization. Two different purification protocols were developed and both provided ...
Unveiling the nature of black mamba (Dendroaspis polylepis) venom through venomics and antivenom immunoprofiling: identification of key toxin targets for antivenom development.
(2015-04-24)
The venom proteome of the black mamba, Dendroaspis polylepis, from Eastern Africa, was, for the first time, characterized. Forty- different proteins and one nucleoside were identified or assigned to protein families. The ...
Venom of Bothrops asper from Mexico and Costa Rica: Intraspecific variation and cross-neutralization by antivenoms
(2012-01)
Bothrops asper is the species that induces the highest incidence of snakebite envenomation
in southern Mexico, Central America and parts of northern South America. The intraspecies
variability in HPLC profile and ...
Preclinical evaluation of three polyspecific antivenoms against the venom of Echis ocellatus: Neutralization of toxic activities and antivenomics
(2016-09-01)
Snakebite envenoming has a heavy burden in the public health in sub-Saharan Africa. The viperid species Echis ocellatus (carpet viper or saw-scaled viper) is the medically most important snake in the savannahs of western ...
Membrane independent activation of fibroblast proMMP-2 by snake venom: novel roles for venom proteinases
(2004-12-01)
ProMMP-2 activation by Bothrops asper venom was investigated in mouse gastrocnemius muscle, mammalian cell culture and a cell-free system. Zymography revealed an increment of latent and activated forms of MMP-2 in muscle ...
Calcium ion independent membrane leakage induced by phospholipase-like myotoxins
(1992-12)
The two snake venom myotoxins ammodytin L and myotoxin II, purified respectively from Vipera ammodytes ammodytes and Bothrops asper, have phospholipase-like structures but lack an Asp-49 in the active site and are without ...
A novel pentameric phospholipase A2 myotoxin (PophPLA2) from the venom of the pit viper Porthidium ophryomegas
(2018-06-07)
The first toxin isolated from the venomous pit viper Porthidiumophryomegas is a basic pentameric phospholipase
A2 (PophPLA2). Elucidation of its amino acid sequence showed that it belongs to the group IIA of secreted ...
Proteomic analysis of Bothrops pirajai snake venom and characterization of BpirMP, a new P-I metalloproteinase
(2013-03-27)
Bothrops pirajai snake venom was analyzed by a proteomic strategy. Proteins were separated by RP-HPLC, followed by SDS-PAGE, in-gel tryptic digestion, identification by MALDI-TOF/TOF mass spectrometry, and assignment to ...
Tissue Localization and Extracellular Matrix Degradation by PI, PII and PIII Snake Venom Metalloproteinases: Clues on the Mechanisms of Venom-Induced Hemorrhage
(2015-04-24)
Snake venom hemorrhagic metalloproteinases (SVMPs) of the PI, PII and PIII classes were
compared in terms of tissue localization and their ability to hydrolyze basement membrane
components in vivo, as well as by a ...
Varespladib (LY315920) and methyl Varespladib (LY333013) abrogate or delay lethality induced by presynaptically-acting neurotoxic snake venoms
(2020)
The phospholipase A2 (PLA2) inhibitor Varespladib (LY315920) and its orally bioavailable prodrug, methyl-Varespladib (LY333013) inhibit PLA2 activity of a wide variety of snake venoms. In this study, the ability of these ...