Neutralizing activities of ethanolic extracts of six plants traditionally used in Guatemala as antidotes for the envenomation caused by the snake Bothrops asper
DOI:
https://doi.org/10.36829/63CTS.v2i1.34Keywords:
Plant extracts, proteolytic effect, phospholipase A2 (PLA2), B. asper venomAbstract
Many plants are reported to be used in Guatemalan traditional medicine as antidotes against various effects of the snakebite; however, very few attempts have been made to evaluate their neutralizing capacity in controlled experiments. Six plants (Acacia hindsii, Cissampelos pareira; Hamelia patens, Piper peltatum, Sansevieria hyacinthoides and Aristolochia maxima) were evaluated in vitro for their ability to neutralize phospholipase A2(PLA2) and proteolytic effects of the venom of Bothrops asper, the snake responsible for approximately half of the snakebite envenomations in Central America. These effects are indicatives of the ability of B. asper venom to produce myotoxicity, hemorrhage and inflammation. Plants were collected, dried and extracted by maceration with ethanol. After pre-incubation of several amounts of each extract with a challenge dose of venom, S. hyacinthoides demonstrated a low neutralizing capacity (< DE 50 ) of the PLA2 effect (13.90 ± 6.41%); C. pareira (32.98 ± 5.51%) and P. peltatum (24.52 ± 7.45%) neutralized less than 50% of the proteolytic effect. The results suggest that neither of the tested plants should be used individually to treat the main effects of B. asper envenomation. However, the three low-active extracts might be potentiated when used in mixtures composed of several plants, as prepared by traditional healers. Given the complexity of the venom components and the multiple pathologic effects produced by B. asper envenomation, more tests are required to fully investigate the ability of this plants to neutralize the coagulant, fibrin(ogen)olytic, edematizing and myotoxic effects of the venom.Downloads
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