Evaluation of the anti-inflammatory activity of riparin II (O-methil-N-2-hidroxi-benzoyl tyramine) in animal models.

Abstract

Riparin II (RipII), an alkamide isolated from the green fruit of Aniba riparia, was tested in the various animal models of inflammation to investigate its anti-inflammatory activity. Male Wistar rats (180-240g) were treated with RipII by gavage at doses 25 or 50mg/kg, before initiating the inflammatory responses. The tests used were paw edema induced by carrageenan, dextran, histamine or serotonin; peritonitis induced by carrageenan and fMLP, as well as the measurement of MPO activity, TNF-α and Il-1β amount in the peritoneal fluid. In the animal models of carrageenan and dextran-induced paw edema, the animals treated with RipII showed lower edema than those of the control group. Treatment with RipII also reduced the paw edema induced by histamine but not serotonin. In the carrageenan-induced peritonitis model, treatment with RipII reduced leukocyte migration, the MPO activity and the amount of TNF-α and IL-1β in the peritoneal fluid. In summary, these results indicate that RipII has an anti-inflammatory activity in chemical models of acute inflammation. RipII might be directly or indirectly inhibiting the activity, production or release of pro-inflammatory mediators involved in the generation of the pain associated with inflammation.

• Authors: Alyne Mara Rodrigues de Carvalho, Nayrton Flávio Moura Rocha, Leonardo Freire Vasconcelos, Emiliano Ricardo Vasconcelos Rios, Marília Leite Dias, Maria Izabel Gomes Silva, Marta Maria de França Fonteles, José Maria Barbosa Filho, Stanley Juan Chavez Gutierrez, Francisca Cléa Florenço de Sousa
• Journal: Chemico-biological interactions (Chem Biol Interact) Vol. 205 Issue 3 Pg. 165-72 (Oct 05 2013) ISSN: 1872-7786 [Electronic] Ireland
• PMID: 23872256 (Publication Type: Journal Article, Research Support, Non-U.S. Gov't)
• Copyright: Copyright © 2013 Elsevier Ireland Ltd. All rights reserved.

Chemical References

• Anti-Inflammatory Agents
• Benzamides
• N-(2-hydroxybenzoyl)tyramine
• Thiobarbituric Acid Reactive Substances
• Malondialdehyde
• Tyramine

Topics

• Animals
• Anti-Inflammatory Agents (pharmacology)
• Benzamides (pharmacology)
• Disease Models, Animal
• Edema (chemically induced, drug therapy)
• Inflammation (chemically induced, drug therapy)
• Male
• Malondialdehyde (metabolism)
• Mice
• Peritonitis (chemically induced, drug therapy)
• Rats
• Rats, Wistar
• Thiobarbituric Acid Reactive Substances (metabolism)
• Tyramine (analogs & derivatives, pharmacology)