Comparison of the potency of three Brazilian Bothrops antivenoms using in vivo rodent and in vitro assays. BIASG (Butantan Institute Antivenom Study Group).

Abstract

Three Brazilian polyspecific Bothrops antivenoms were compared using standard W.H.O. rodent in vivo and in vitro assays of their ability to neutralize the principal venom activities of pooled whole Bothrops jararaca venom. On a volume basis, the antivenoms were equally effective in neutralizing lethal activity in mice, and there were only minor differences in their ability to neutralize venom-induced haemorrhage, necrosis and procoagulant activity. Antivenom efficacy in neutralizing defibrinogenation varied. However, when equal amounts of antivenom IgG were compared, it was found that the FUNED antivenom best neutralized lethality, haemorrhage, necrosis and fibrinogen clotting activity. Vital Brazil and FUNED antivenoms were equally effective in neutralizing plasma coagulant activity but Vital Brazil antivenom was the more effective in neutralizing defibrinogenation.

• Authors: G D Laing, R D Theakston, R P Leite, W D da Silva, D A Warrell
• Journal: Toxicon : official journal of the International Society on Toxinology (Toxicon) Vol. 30 Issue 10 Pg. 1219-25 (Oct 1992) ISSN: 0041-0101 [Print] England
• PMID: 1440628 (Publication Type: Comparative Study, Journal Article, Research Support, Non-U.S. Gov't)

Chemical References

• Antivenins
• Crotalid Venoms
• Immunoglobulin G
• Snake Venoms
• Fibrinogen

Topics

• Animals
• Antivenins (pharmacology, therapeutic use)
• Blood Coagulation (drug effects)
• Crotalid Venoms (antagonists & inhibitors, toxicity)
• Fibrinogen (metabolism)
• Hemorrhage (chemically induced, prevention & control)
• Immunoglobulin G (immunology)
• Lethal Dose 50
• Mice
• Necrosis (chemically induced, prevention & control)
• Neutralization Tests
• Snake Venoms