Data/hora: 11/06/2024 10:55:15

Provedor de dados: | 79
País: | Brazil
Título: | Small synthetic peptides inhibit, in mice, the lethalithy of toxins derived from animal, plant and bacteria
Autores: | LIPPS,B. V.
Data: | 2000-01-01
Ano: | 2000
Palavras-chave: | Lethal Toxin Neutralizing Factor (LTNF); Opossum; Crotalus atrox; Naja kaouthia; Daboia russelli; Oxyuranus s. scutellatus; Androcetonus australis; Apis mellifera; Ricin; Ricinus communis; Botulinum; Clostridium botulinum.
Resumo: | Lethal Toxin Neutralizing Factor (LTNF), isolated from opossum with having molecular weight 63 kDa, is a potent antidote for animal, plant, and bacterial toxins. This communication deals with the identification of a small fragment of LTNF eliciting the anti-lethal activity of animal, plant, and bacterial toxins when tested in mice. Purified LTNF was treated with trypsin to cause fragmentation at the arginine and lysine sites. The fragments were separated by high-performance liquid chromatography (HPLC) and were tested against anti-LTNF for binding affinity by enzyme-linked immunosorbent test (ELISA). The fragment showing the most binding to anti-LTNF was sequenced. Synthetic peptides consisting of 15 and 10 amino acids from the N-terminal were constructed and designated as LT-15, with amino acid sequence Leu-Lys-Ala-Met-Asp-Pro-Thr-Pro-Pro-Leu-Trp-Ile-Lys-Thr-Glu, and LT-10, with sequence Leu-Lys-Ala-Met-Asp-Pro-Thr-Pro-Pro-Leu. Death due to intramuscular (IM) injection of predetermined lethal doses of toxins derived from animal, plant, and bacteria was prevented treating the mice with synthetic peptides LT-15 and LT-10. The lethality was inhibited when the treatment was given before or after the toxin injection. Synthetic LTNF can be made in abundance and should become a universal therapy against intoxication caused by animal, plant, and bacteria.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0104-79302000000100005
Editor: | Centro de Estudos de Venenos e Animais Peçonhentos - CEVAP, Universidade Estadual Paulista - UNESP
Relação: | 10.1590/S0104-79302000000100005
Formato: | text/html
Fonte: | Journal of Venomous Animals and Toxins  v.6 n.1 2000
Fonte: | info:eu-repo/semantics/openAccess