Antibody-mediated neutralization and binding-reversal studies on α-neurotoxins from micrurus nigrocinctus nigrocinctus (coral snake) venom
Guardado en:
| Autores: | , , |
|---|---|
| Formato: | artículo original |
| Fecha de Publicación: | 1996 |
| Descripción: | An ELISA based, non-radioactive acetylcholine receptor (AchR) binding assay was used to detect the alpha-neurotoxins present in Micrurus nigrocinctus nigrocinctus venom. Sera from horses hyperimmunized against M. nigrocinctus venom contain antibodies which inhibit the binding of M. n. nigrocinctus alpha-neurotoxins to AchR and reverse the binding of toxins already complexed with the receptor. This result supports the importance of using antivenom therapeutically in M. n. nigrocinctus envenomations even after the onset of neurological symptoms. M. nigrocinctus antivenoms cross-reacted in an ELISA with several elapid alpha-neurotoxins and inhibited the binding of Bungarus multicinctus alpha-bungarotoxin and Naja naja oxiana neurotoxin II to AchR in vitro, suggesting the presence of short-chain and long-chain alpha-neurotoxins in M. nigrocinctus venom. In vivo neutralization experiments with M. nigrocinctus antivenom demonstrate that M. nigrocinctus venom contains short-chain alpha-neurotoxin(s) which share common neutralizing epitope(s) with Naja naja oxiana neurotoxin II. |
| País: | Kérwá |
| Institución: | Universidad de Costa Rica |
| Repositorio: | Kérwá |
| OAI Identifier: | oai:kerwa.ucr.ac.cr:10669/29371 |
| Acceso en línea: | http://www.sciencedirect.com/science/article/pii/0041010195001263 https://hdl.handle.net/10669/29371 |
| Palabra clave: | Animals Antibodies Antivenins Binding, Competitive Cross Reactions Dose-Response Relationship, Drug Elapid Venoms Elapidae Enzyme-Linked Immunosorbent Assay Guinea Pigs Horses Immune Sera Immunization Mice Neurotoxins Neutralization Tests Receptors, Cholinergic Snake venom |