Venomics of the poorly studied hognosed pitvipers Porthidium arcosae and Porthidium volcanicum
Ruiz Campos, Marco
Bonilla Murillo, Fabián
Sasa Marín, Mahmood
Zaruma Torres, Fausto Leonardo
Terán Zavala, María Del Carmen
Fernández Ulate, Julián
Calvete Chornet, Juan José
Caldeira, Cleópatra A. S.
da Silva, Saulo Luís
MetadataShow full item record
We report the first proteomics analyses of the venoms of two poorly studied snakes, the Manabi hognosed pitviper Porthidium arcosae endemic to the western coastal province of Manabí (Ecuador), and the Costa Rican hognosed pitviper P. volcanicum with distribution restricted to South Pacific Costa Rica and western Panamá. These venom proteomes share a conserved compositional pattern reported in four other congeneric species within the clade of South American Porthidium species, P. nasutum, P. lansbergii, P. ophryomegas, and P. porrasi. The paraspecific immunorecognition profile of antivenoms produced in Costa Rica (ICP polyvalent), Perú (Instituto Nacional de Salud) and Brazil (soro antibotrópico pentavalente, SAB, from Instituto Butantan) against the venom of P. arcosae was investigated through a third-generation antivenomics approach. The maximal venom-binding capacities of the investigated antivenoms were 97.1 mg, 21.8 mg, and 25.7 mg of P. arcosae venom proteins per gram of SAB, ICP, and INS-PERU antibody molecules, respectively, which translate into 28.4 mg, 13.1 mg, and 15.2 mg of total venom proteins bound per vial of SAB, ICP, and INS-PERU AV. The antivenomics results suggest that 21.8%, 7.8% and 6.1% of the SAB, ICP, and INS-PERU antibody molecules recognized P. arcosae venom toxins. The SAB antivenom neutralized P. arcosae venom's lethality in mice with an ED50 of 31.3 mgV/g SAB AV. This preclinical neutralization paraspecificity points to Brazilian SAB as a promising candidate for the treatment of envenomings by Ecuadorian P. arcosae.
External link to the item10.1016/j.jprot.2021.104379
- Microbiología 
Showing items related by title, author, creator and subject.
Preclinical assessment of a polyspecific antivenom against the venoms of Cerrophidion sasai, Porthidium nasutum and Porthidium ophryomegas: Insights from combined antivenomics and neutralization assays Gutiérrez, José María; Tsai, Wan-Chih; Pla Ferrer, Davinia; Solano Trejos, María Gabriela; Lomonte, Bruno; Sanz, Libia; Angulo Ugalde, Yamileth; Calvete Chornet, Juan José (2013-03-15)A polyspecific antivenom is used in Central America for the treatment of envenomings by viperid snakes. This antivenom is generated in horses hyperimmunized with a mixture of venoms from Bothrops asper, Crotalus simus and ...
Snake venomics of the pit vipers Porthidium nasutum, Porthidium ophryomegas, and Cerrophidion godmani from Costa Rica: Toxicological and taxonomical insights Lomonte, Bruno; Rey Suárez, Paola; Tsai, Wan-Chih; Angulo Ugalde, Yamileth; Sasa Marín, Mahmood; Gutiérrez, José María; Calvete Chornet, Juan José (2012-02-16)Within the Neotropical pit vipers, a lineage of primarily Middle American snake species referred to as the “Porthidium group” includes the genera Atropoides, Cerrophidion, and Porthidium. In this study, the venom proteomes ...