Twenty-first century solutions to snake bites, Pg11

Key Highlights:

• Snakebites in India cause approximately 58,000 deaths annually, affecting rural workers and farmers.
• Current antivenom targets the venom of India’s 'Big Four' snake species: spectacled cobra, common krait, Russell’s viper, and saw-scaled viper.
• Traditional antivenom production involves injecting a venom cocktail into horses to produce antibodies.
• Recent research explores using alpacas and llamas to generate more effective nanobody-based antivenoms.

Detailed Insights:

• Traditional antivenom production, in use since the 1950s, has limitations due to the diversity of venomous snakes in India and regional variations in venom composition.
• A Danish laboratory is developing a broad-spectrum antivenom for sub-Saharan African snakes using nanobodies derived from alpacas and llamas.
• Researchers at the National Research Centre on Camel in Bikaner have demonstrated that antivenom generated in camels can neutralize venom from the Sochurek’s saw-scaled viper.
• The World Health Organization classifies snakebites as a neglected tropical disease, highlighting the need for improved treatment solutions.

Scientific/Technical Concepts Involved:

• Antivenom: A serum containing antibodies used to neutralize the effects of venom.
• Nanobodies: Small, stable antibody fragments derived from camelid species (camels, llamas, and alpacas).
• Bacteriophage: A virus that infects and replicates in bacteria, used here as a vector for nanobody production.