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Cross-Neutralisation of In Vitro Neurotoxicity of Asian and Australian Snake Neurotoxins and Venoms by Different Antivenoms
- Source :
- Toxins, Vol 8, Iss 10, p 302 (2016), Toxins; Volume 8; Issue 10; Pages: 302, Toxins
- Publication Year :
- 2016
- Publisher :
- MDPI AG, 2016.
-
Abstract
- There is limited information on the cross-neutralisation of neurotoxic venoms with antivenoms. Cross-neutralisation of the in vitro neurotoxicity of four Asian and four Australian snake venoms, four post-synaptic neurotoxins (α-bungarotoxin, α-elapitoxin-Nk2a, α-elapitoxin-Ppr1 and α-scutoxin; 100 nM) and one pre-synaptic neurotoxin (taipoxin; 100 nM) was studied with five antivenoms: Thai cobra antivenom (TCAV), death adder antivenom (DAAV), Thai neuro polyvalent antivenom (TNPAV), Indian Polyvalent antivenom (IPAV) and Australian polyvalent antivenom (APAV). The chick biventer cervicis nerve-muscle preparation was used for this study. Antivenom was added to the organ bath 20 min prior to venom. Pre- and post-synaptic neurotoxicity of Bungarus caeruleus and Bungarus fasciatus venoms was neutralised by all antivenoms except TCAV, which did not neutralise pre-synaptic activity. Post-synaptic neurotoxicity of Ophiophagus hannah was neutralised by all antivenoms, and Naja kaouthia by all antivenoms except IPAV. Pre- and post-synaptic neurotoxicity of Notechis scutatus was neutralised by all antivenoms, except TCAV, which only partially neutralised pre-synaptic activity. Pre- and post-synaptic neurotoxicity of Oxyuranus scutellatus was neutralised by TNPAV and APAV, but TCAV and IPAV only neutralised post-synaptic neurotoxicity. Post-synaptic neurotoxicity of Acanthophis antarcticus was neutralised by all antivenoms except IPAV. Pseudonaja textillis post-synaptic neurotoxicity was only neutralised by APAV. The α-neurotoxins were neutralised by TNPAV and APAV, and taipoxin by all antivenoms except IPAV. Antivenoms raised against venoms with post-synaptic neurotoxic activity (TCAV) cross-neutralised the post-synaptic activity of multiple snake venoms. Antivenoms raised against pre- and post-synaptic neurotoxic venoms (TNPAV, IPAV, APAV) cross-neutralised both activities of Asian and Australian venoms. While acknowledging the limitations of adding antivenom prior to venom in an in vitro preparation, cross-neutralization of neurotoxicity means that antivenoms from one region may be effective in other regions which do not have effective antivenoms. TCAV only neutralized post-synaptic neurotoxicity and is potentially useful in distinguishing pre-synaptic and post-synaptic effects in the chick biventer cervicis preparation.
- Subjects :
- 0301 basic medicine
Male
Health, Toxicology and Mutagenesis
Antivenom
Neurotoxins
venom
lcsh:Medicine
Venom
Pharmacology
In Vitro Techniques
Toxicology
complex mixtures
Article
03 medical and health sciences
Bungarus
Oxyuranus scutellatus
chemistry.chemical_compound
neurotoxicity
Naja kaouthia
Animals
Muscle, Skeletal
Pseudonaja
Taipoxin
antivenom
cross-neutralisation
snake
030102 biochemistry & molecular biology
biology
Antivenins
lcsh:R
biology.organism_classification
030104 developmental biology
chemistry
Acanthophis
Chickens
Snake Venoms
Subjects
Details
- Language :
- English
- ISSN :
- 20726651
- Volume :
- 8
- Issue :
- 10
- Database :
- OpenAIRE
- Journal :
- Toxins
- Accession number :
- edsair.doi.dedup.....1108cb64bbd503a98e3f61c4af739e1a