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Exploiting venom toxins in paratransgenesis to prevent mosquito-borne disease.
Parasit Vectors
January 2025
Centre for Snakebite Research and Interventions, Liverpool School of Tropical Medicine, Liverpool, UK.
Mosquitoes are responsible for the transmission of numerous pathogens, including Plasmodium parasites, arboviruses and filarial worms. They pose a significant risk to public health with over 200 million cases of malaria per annum and approximately 4 billion people at risk of arthropod-borne viruses (arboviruses). Mosquito populations are geographically expanding into temperate regions and their distribution is predicted to continue increasing.
View Article and Find Full Text PDFInteraction and cleavage of cell and plasma proteins by the platelet-aggregating serine protease PA-BJ of Bothrops jararaca venom.
Biochimie
January 2025
Laboratory of Applied Toxinology, Center of Toxins, Immune-Response and Cell Signaling (CeTICS), Butantan Institute, São Paulo, Brazil. Electronic address:
PA-BJ is a serine protease present in Bothrops jararaca venom that triggers platelet aggregation and granule secretion by activating the protease-activated receptors PAR-1 and PAR-4, without clotting fibrinogen. These receptors also have a relevant role in endothelial cells, however, the interaction of PA-BJ with other membrane-bound or soluble targets is not known. Here we explored the activity of PA-BJ on endothelial cell receptor, cytoskeleton, and coagulation proteins in vitro, and show the degradation of fibrinogen and protein C, and the limited proteolysis of actin, EPCR, PAR-1, and thrombomodulin.
View Article and Find Full Text PDFA combination of gold nanoparticles and laser photobiomodulation to boost antioxidant defenses in the recovery of muscle injuries caused by Bothrops jararaca venom.
Lasers Med Sci
January 2025
Laboratory of Pathophysiology Experimental, Postgraduate Program in Health Sciences, Universidade do Extremo Sul Catarinense (UNESC), Criciúma, SC, Brazil.
Unlabelled: This study aimed to evaluate gold nanoparticles (GNPs) and photobiomodulation (PBM), associated with antibothropic serum (AS), to treat a muscle lesion induced by Bothrops jararaca venom.
Methods: 108 Swiss male mice were used, divided into nine groups (n = 12) with different combinations of treatments. Animals were inoculated with 250 µg of B.
Sochureki, the different saw- scaled viper: Challenges are many!
Med J Armed Forces India
January 2024
Resident, Department of Internal Medicine, Armed Forces Medical College, Pune, India.
Snake bite is a major cause of mortality in the Indian subcontinent. The condition is fraught with the problem of under reporting. Most bites in India are caused by the "Big 4 species," based on this, the anti-snake venom (ASV) is also sourced from these species only.
View Article and Find Full Text PDFHydrophilic interaction chromatography coupled to high resolution mass spectrometry (HILIC-LC-HRMS): An approach to study natural peptides in Viperidae snake venom.
J Chromatogr A
January 2025
Laboratório Bioquímica e Biofísica, Instituto Butantan, São Paulo, Av. Vital Brasil 1500, São Paulo, SP 05503-900, Brazil. Electronic address:
Although proteins in snake venoms have been extensively studied and characterized, low-mass molecules remain relatively unexplored, mainly due to their low abundance, secondary role in envenomation, and some analytical technique limitations. However, these small molecules can provide new important data related to venom toxins' molecular structure, functions, and evolutionary relationships. This research aimed to characterize molecules below 10 kDa in the venoms of snakes from the Viperidae families (Bothrops, Agkistrodon, and Bitis) and compare two chromatographic approaches: reverse-phase chromatography (RP), a classic technique, and hydrophilic interaction liquid chromatography (HILIC), an alternative technique, both coupled with high-resolution mass spectrometry (HRMS).
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