Scorpionism is a serious public health problem in various regions of the world. In Brazil, a high number of accidents by scorpions have been reported. From 2014 to 2018, about 547,000 cases were recorded, resulting in 466 deaths. The scorpion Tityus stigmurus is the predominant species in the northeast of Brazil, being responsible for most scorpionism cases in this region. With the aid of the transcriptomic approach of the venom gland of this species, components as neurotoxins, antimicrobials, metal chelating peptides and hypotensins, have been identified and characterized in silico, showing different biologic activity in vitro. In addition, the neuronal, pancreatic, renal, and enzymatic effects have been demonstrated for the crude T. stigmurus venom. Therefore, the T. stigmurus scorpion venom constitutes a rich arsenal of bioactive molecules with high potential for therapeutic and biotechnological application.
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http://dx.doi.org/10.1016/j.toxicon.2020.06.015 | DOI Listing |
Toxicon
January 2025
Laboratory of Experimental Pathophysiology, Universidade Do Extremo Sul Catarinense. Universitário, 88806-000. Criciúma. Santa Catarina, Brazil. Electronic address:
Tityus serrulatus accident promote vast symptomatology related to toxins of the venom, which leads to a massive release of neurotransmitters, notably dopamine, affecting behavior and neurochemistry. The recommended treatment for envenomation is the antiscorpionic serum (SAEsc) administration. Related to this complexity of the Tityus serrulatus envenomation, this study aimed to assess organism responses to the venom, its impact on behavior, oxidative stress, neurochemistry, and genetic impacts, as well as the efficacy of SAEsc, especially concerning dopamine levels and genetic interactions.
View Article and Find Full Text PDFToxicon
January 2025
Department of BioMolecular Sciences, School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, Ribeirão Preto, SP, Brazil. Electronic address:
Our study identified high-molecular-weight compounds from Tityus serrulatus venom (TsV), and most of them have not yet been well explored. TsV was fractionated using FPLC system with different columns, analyzed by SDS-PAGE, and characterized by MALDI-TOF/TOF. Our study showed that TsV contains several high-molecular-weight compounds, including CRISPs, metalloproteinase and hyaluronidase.
View Article and Find Full Text PDFZoology (Jena)
December 2024
Programa de Pós-Graduação em Biologia Animal, Centro de Biociências, Universidade Federal de Pernambuco, Recife 50670-901, Brazil; Laboratory of Sciences for the Environment, University of Corsica, UMR 6134 SPE, Ajaccio 20000, France.
Hydrophobic compounds present in the cuticular wax layer (CWL) of terrestrial arthropods protect them from dehydration and are also involved in chemical communication. However, the role of CWL compounds in the behavioral ecology of scorpions has been studied less often, with most investigations focusing on their responses to mechanical stimuli. In this study, we aimed to characterize the CWL composition of Tityus pusillus (Scorpiones, Buthidae) and examine the influence of CWL solvent extracts and movement on intraspecific mate and sexual recognition by males of this species.
View Article and Find Full Text PDFToxicon
December 2024
Laboratory of Pharmacology, Butantan Institute, Av. Dr. Vital Brazil 1500, São Paulo, 05503-900, Brazil. Electronic address:
Despite the numerous incidents of scorpion envenoming worldwide, little is known about the effects of maternal venom exposure and serotherapy on fetal development. The impact of antivenom on pregnant rats envenomed by Tityus serrulatus venom was examined. The venom caused alterations in the development of the offspring, yet the antivenom protected against these adverse effects and does not cause harm in itself, indicating the potential benefits of serotherapy.
View Article and Find Full Text PDFToxicon
December 2024
Fundación Instituto de Estudios Avanzados (IDEA), Carretera Nacional Hoyo de la Puerta, Valle de Sartenejas, Baruta, Venezuela.
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