Lectin extracted from Canavalia grandiflora seeds presents potential anti-inflammatory and analgesic effects.

Abstract

Neutrophil migration is responsible for tissue damage observed in inflammatory diseases and is also implicated in inflammatory nociception. The use of lectins has been demonstrated to be effective in different activities including anti-inflammatory, antimicrobial, and in cancer therapy. In this study, we addressed the potential use of a lectin from Canavalia grandiflora seeds (ConGF) to control neutrophil migration and inflammatory hypernociception. Pretreatment of the animals intravenously (15 min before) with ConGF inhibited neutrophil migration to the peritoneal cavity in a dose-dependent fashion confirmed by an inhibition of rolling and adhesion of leukocytes by intravital microscopy. Another set of experiments showed that pretreatment of the animals with ConGF inhibited the mechanical hypernociception in mice induced by the i.pl. injection of carrageenan or formalin. This anti-nociceptive effect correlated with an effective blockade of neutrophil influx, as assessed by the hind paw tissue myeloperoxidase levels. Furthermore, ConGF had important inhibitory effects on the mouse carrageenan-induced paw edema. In addition, animals treated with ConGF showed inhibition of cytokines release. In conclusion, we demonstrated that the lectin ConGF inhibits neutrophil migration and mechanical inflammatory hypernociception.

• Authors: Breno S Nunes, Nathalie S Rensonnet, Daniela Dal-Secco, Silvio M Vieira, Benildo S Cavada, Edson H Teixeira, Tales R Moura, Cícero S Teixeira, Juliana T Clemente-Napimoga, Fernando Q Cunha, Marcelo H Napimoga
• Journal: Naunyn-Schmiedeberg's archives of pharmacology (Naunyn Schmiedebergs Arch Pharmacol) Vol. 379 Issue 6 Pg. 609-16 (Jun 2009) ISSN: 1432-1912 [Electronic] Germany
• PMID: 19153712 (Publication Type: Comparative Study, Journal Article, Research Support, Non-U.S. Gov't)

Chemical References

• Analgesics
• Anti-Inflammatory Agents, Non-Steroidal
• Plant Extracts
• Plant Lectins
• lectin, Canavalia

Topics

• Analgesics (isolation & purification, pharmacology, therapeutic use)
• Animals
• Anti-Inflammatory Agents, Non-Steroidal (isolation & purification, pharmacology, therapeutic use)
• Canavalia
• Inflammation (drug therapy, pathology)
• Male
• Mice
• Pain (drug therapy, pathology)
• Plant Extracts (isolation & purification, pharmacology, therapeutic use)
• Plant Lectins (isolation & purification, pharmacology, therapeutic use)
• Seeds