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Intravenous administration of equine-derived whole IgG antivenom does not induce early adverse reactions in non-envenomed horses and cows 

Estrada Umaña, Ricardo; Herrera Vega, María; Segura Ruiz, Álvaro; Araya, Javier; Boschini Figueroa, Carlos; Gutiérrez, José María; León Montero, Guillermo (2010-11)
Administration of antivenoms to treat snakebite envenomings has the potential risk of inducing early adverse reactions. The mechanisms involved in these reactions are unclear. In this study, polyspecific antivenom consisting ...

Toxicity of Bothrops sp snake venoms from Ecuador and preclinical assessment of the neutralizing efficacy of a polyspecific antivenom from Costa Rica 

Laines, Johana; Segura Ruiz, Álvaro; Villalta Arrieta, Mauren; Herrera Vega, María; Vargas Arroyo, Mariángela; Alvarez, Gladys; Gutiérrez, José María; León Montero, Guillermo (2014-09-15)
The toxicological profile of the venoms of the snakes Bothrops asper and Bothrops atrox from Ecuador was investigated, together with the venom of a population of B. asper formerly classified as ‘Bothrops xanthogrammus’. ...

Freeze-dried snake antivenoms formulated with sorbitol, sucrose or mannitol: Comparison of their stability in an accelerated test 

Herrera Vega, María; Tattini Jr., Virgilio; Pitombo, Ronaldo N. M.; Gutiérrez, José María; Borgognoni, Camila; Vega Baudrit, José; Solera, Federico; Cerdas Solís, Maykel; Segura Ruiz, Álvaro; Villalta Arrieta, Mauren; Villalta Arrieta, Mauren; Vargas Arroyo, Mariángela; León Montero, Guillermo (2014-11)
Freeze-drying is used to improve the long term stability of pharmaceutical proteins. Sugars and polyols have been successfully used in the stabilization of proteins. However, their use in the development of freeze-dried ...

Preclinical assessment of the neutralizing capacity of antivenoms produced in six Latin American countries against medically-relevant Bothrops snake venoms 

Segura Ruiz, Álvaro; Castillo, M. C.; Núñez Rangel, Vitelbina; Yarlequé, A.; Gonçalves, Luís Roberto de Camargo; Villalta Arrieta, Mauren; Bonilla, César; Herrera Vega, María; Fernández, M.; Yano, M. Y.; Araújo, H. P.; Boller, M. A. A.; León, P.; Tintaya, B.; Sano Martins, I. S.; Gómez, A.; Fernández, Gil Patrick; Geoghegan, Patricia; Higashi, Hisako Gondo; León Montero, Guillermo; Gutiérrez, José María (2010-11)
Species of the genus Bothrops induce the vast majority of snakebite envenomings in Latin America. A preclinical study was performed in the context of a regional network of public laboratories involved in the production, ...

Study of the design and analytical properties of the lethality neutralization assay used to estimate antivenom potency against Bothrops asper snake venom 

Solano Trejos, María Gabriela; Segura Ruiz, Álvaro; Herrera Vega, María; Gómez Argüello, Aarón; Villalta Arrieta, Mauren; Gutiérrez, José María; León Montero, Guillermo (2010-09)
The lethality neutralization assay performed in mice is the standard recommended by the World Health Organization to estimate antivenom potency. The interpretation of its results without considering its analytical capacity ...

Lachesis stenophrys venom reduces the equine antibody response towards Bothrops asper venom used as co-immunogen in the production of polyspecific snake antivenom 

Arroyo Portilla, Cynthia; Solano Rojas, Sergio; Herrera Vega, María; Segura Ruiz, Álvaro; Estrada Umaña, Ricardo; Vargas Arroyo, Mariángela; Villalta Arrieta, Mauren; León Montero, Guillermo (2015-09-01)
The anti-bothropic activity of an antivenom prepared from the plasma of horses immunized with Bothrops asper venom (anti-B antivenom) was compared with a similar formulation produced from the plasma of horses immunized ...

Comparison between IgG and F(ab′)2 polyvalent antivenoms: neutralization of systemic effects induced by Bothrops asper venom in mice, extravasation to muscle tissue, and potential for induction of adverse reactions 

León Montero, Guillermo; Monge Monge, María; Rojas Umaña, Ermila; Lomonte, Bruno; Gutiérrez, José María (2001-06)
Whole IgG and F(ab′)2 equine-derived polyvalent (Crotalinae) antivenoms, prepared from the same batch of hyperimmune plasma, were compared in terms of neutralization of the lethal and defibrinating activities induced by ...

Comparative study on the ability of IgG and F(ab')2 antivenoms to neutralize lethal and myotoxic effects induced by Micrurus nigrocinctus (coral snake) venom 

León Montero, Guillermo; Stiles, Bradley G.; Alape Girón, Alberto; Rojas Céspedes, Gustavo; Gutiérrez, José María (1999-08)
A comparative study was performed on the ability of IgG and F(ab')2 antivenoms to neutralize lethal and myotoxic activities of Micrurus nigrocinctus venom. Both antivenoms were adjusted to a similar neutralizing potency ...

Comparative study on the ability of IgG and Fab sheep antivenoms to neutralize local hemorrhage, edema and myonecrosis induced by Bothrops asper (terciopelo) snake venom 

León Montero, Guillermo; Valverde, Juan Manuel; Rojas Céspedes, Gustavo; Lomonte, Bruno; Gutiérrez, José María (2000-02)
The ability of sheep antivenoms, consisting of whole IgG molecules or Fab fragments, to neutralize local hemorrhage, edema and myonecrosis induced by Bothrops asper venom was comparatively studied in mice. The two antivenoms ...

Development of a chicken-derived antivenom against the taipan snake (Oxyuranus scutellatus) venom and comparison with an equine antivenom 

Navarro Arias, Diego; Vargas Arroyo, Mariángela; Herrera Vega, María; Segura Ruiz, Álvaro; Gómez Argüello, Aarón; Villalta Arrieta, Mauren; Ramírez Arguedas, Nils Antonio; Williams, David J.; Gutiérrez, José María; León Montero, Guillermo (2016-09-15)
A chicken-derived antivenom (ChDAv) towards taipan snake (Oxyuranus scutellatus) venom was produced by purifying anti-taipan IgY from egg yolks of hens immunized with taipan venom. The productivity, antivenomic profile, ...
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Gutiérrez, José María (52)Herrera Vega, María (33)Segura Ruiz, Álvaro (31)Villalta Arrieta, Mauren (26)Vargas Arroyo, Mariángela (20)Lomonte, Bruno (17)Estrada Umaña, Ricardo (10)Angulo Ugalde, Yamileth (9)Calvete Chornet, Juan José (9)... View MoreType
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  • Repositorios universitarios

  • Repositorio del SIBDI-UCR
  • Biblioteca Digital del CIICLA
  • Repositorio Documental Rafael Obregón Loría (CIHAC)
  • Biblioteca Digital Carlos Melendez (CIHAC)
  • Repositorio de Fotografías
  • Colección de videos de UPA-VAS
  • Sitios recomendados

  • Buscador regional de LA Referencia
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  • Scientific Electronic Library Online (SciELO)
  • Directory of Open Access Journals (DOAJ)
  • Redalyc
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  • @Ciencia_UCR
  • Sobre Kérwá
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  • Políticas
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Repositorio Institucional de la Universidad de Costa Rica. Algunos derechos reservados. Este repositorio funciona con DSpace.
Universidad de Costa Rica