African Journal of
Biotechnology

  • Abbreviation: Afr. J. Biotechnol.
  • Language: English
  • ISSN: 1684-5315
  • DOI: 10.5897/AJB
  • Start Year: 2002
  • Published Articles: 12269

Full Length Research Paper

Characterization of a hemorrhage-inducing component present in Bitis arietans venom

Tahis Louvain de Souza
  • Tahis Louvain de Souza
  • Laboratorio de Biologia do Reconhecer, Centro de Biociencias e Biotecnologia, Universidade Estadual do Norte Fluminense Darcy ribeiro, Campos dos Goytacazes, RJ, Brazil.
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Fabio C. Magnoli
  • Fabio C. Magnoli
  • Laboratorio de Imunoquimica, Instituto Butantan, Sao Paulo, SP , Brazil.
  • Google Scholar
Wilmar Dias da Silva*
  • Wilmar Dias da Silva*
  • Laboratorio de Imunoquimica, Instituto Butantan, Sao Paulo, SP , Brazil.
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  •  Received: 13 November 2014
  •  Accepted: 16 February 2015
  •  Published: 25 March 2015

Abstract

Better characterization of individual snake venom toxins is useful for analyzing the association of their toxic domains and relevant antigenic epitopes. Here we analyzed the Bitis arietans hemorrhagic-inducing toxin present in a representative venom sample. Among the 1´ to 5´ protein peaks isolated using a Sephacryl S 100 HR chromatography column, hemorrhagic activity was expressed by all according to the following intensity, P´5 > P´3 > P´2 >, P´4. The proteins were recognized and measured with antibodies present in polyvalent horse F(ab)´2 anti-B. arietans, Bitis spp., Lachesis muta, B. atrox, Bothrops spp., Crotalus spp., and Naja spp. or in IgY anti-B. arietans and anti-Bitis spp. using enzyme-linked immunosorbent assays and western blotting. In addition, in an in vitro-in vivo assay these anti-venoms were able to block hemorrhagic-inducing activity. The evident cross-reactivity expressed by different specific anti-venoms indicates that metalloproteinases induce an immunological signature indicating the presence of similar antigenic epitopes for several snake venoms.
 
Key words: Snake venoms, anti-venoms, Bitis arietans, hemorrhage, metalloproteinases.