COMPARISON OF ANTIVENOM POTENTIAL OF CHICKEN EGG YOLK ANTIBODIES GENERATED AGAINST BENTONITE AND ADJUVENT COATED VENOMES OF COMMON POISONOUS SNAKE IN INDIA

Abstract

Antivenom antibodies were generated in white leghorn chicken against bentonite and adjuvant coated venoms of Common Indian Poisonous Snakes (Cobra, Krait, Russell's viper and Saw Scaled viper).The antivenom from immunized chicken egg yolk were purified by polyethylene glycol (PEG) and ammonium sulphate precipitation method and further purified by DEAE cellulose ion exchange column chromatography and concentrated by polyvinyl pyrolidone powder at room temperature. The titer of antibodies was estimated using Enzyme Linked Immunosorbent Assay (ELISA).The chickens immunized with Freund's complete adjuvant showed slightly higher titre when compared to bentonite. Inhibition of lethal, edema, haemorrhagic, procoagulant and phospholipase A₂ and fibrinolytic activities of snake venoms were determined. The chicken egg yolk antivenom was effective in neutralization of these toxic and enzymatic activities of venom. The median effective dose (ED₅₀) of chicken egg yolk antibodies raised against adjuvant coated venoms showed effective neutralizing venom toxicity when compared to the antibodies raised using bentonite coated venoms.