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| Oliveira,Camila Franco Batista; Alves,Daniela Pereira; Emerich,Bruna Luiza; Figueiredo,Suely Gomes de; Cordeiro,Marta do Nascimento; Borges,Márcia Helena; Richardson,Michael; Pimenta,Adriano Monteiro de Castro; Duarte,Igor Dimitri Gama; Lima,Maria Elena de. |
| ABSTRACT Background: The venom of Phoneutria nigriventer spider is a source of numerous bioactive substances, including some toxins active in insects. An example is PnTx4(5-5) that shows a high insecticidal activity and no apparent toxicity to mice, although it inhibited NMDA-evoked currents in rat hippocampal neurons. In this work the analgesic activity of PnTx4(5-5) (renamed Γ-ctenitoxin-Pn1a) was investigated. Methods: The antinociceptive activity was evaluated using the paw pressure test in rats, after hyperalgesia induction with intraplantar injection of carrageenan or prostaglandin E2 (PGE2). Results: PnTx4(5-5), subcutaneously injected, was able to reduce the hyperalgesia induced by PGE2 in rat paw, demonstrating a systemic effect. PnTx4(5-5)... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Spider toxin; Γ-ctenitoxin-Pn1a; PnTx4(5-5); Phoneutria nigriventer; Antinociception; Glutamate. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1678-91992019000100316 |
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