Lethal toxin neutralizing factors

Drug – bio-affecting and body treating compositions – Designated organic active ingredient containing – Peptide containing doai

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514 8, 514 12, 514 21, 530300, 530326, 530350, 530362, 530380, 530416, 530829, 530830, A61K 3810, A61K 3816, C07K 708, C07K 1447

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active

057444498

ABSTRACT:
Opossum whole serum exhibits a life saving property by neutralizing the lethality of venoms from all major families of poisonous snakes, and therefore an injection of Opossum serum can used as a novel treatment for many types of envenomation. Preferably, the injectable treatment for envenomation should be a composition obtained from the fraction of Opossum whole serum which contains the LTNF, i. e. the so called "LTNF-n", in purity. A method is given for the manufacture of a LTNF from the serum of an opossum (Didelphis virginiana) serum, by fractionating the opossum serum and isolating this select fraction from the plurality of fractions having an N terminal amino acid sequence given by SEQ ID No: 1. A short peptide was synthesized having SEQ ID No: 1. The synthetic peptide having the sequence SEQ ID No: 1 shows lethal toxin neutralizing activity similar to the natural LTNF from opossum or mongoose sera. The synthetic LTNF also has life saving utility.

REFERENCES:
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Perales et al. "Neutralization of the Oedematogenic activity of Bothrops Jararaca venom on the Mouse Paw . . . " Agents & Actions 37(3-4) 250-259, 1992.
Tomihara et al. "Purification of Three Antihemorrhagic Factors From the Serum of a Mongoose" Toxicon 25(6) 685-689, 1987.
Perates et al "Anti Snake Venom Protein from Didelphidae" Abstract 10.sup.th World Congress Toxicon 30(5-6) 543, 1992.
Menchaca et al. "The Purification & Characterization of an Antihemerrhagic Factor in Opossum Serum" Toxicon 19(5) 623-632, 1981.
Domont et al. "Natural Anti-Snake Venom Proteins" Toxicon 29(10) 1183-1194, 1991.

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