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Abstract Title:

Polysaccharide fraction isolated from Passiflora edulis inhibits the inflammatory response and the oxidative stress in mice.

Abstract Source:

J Pharm Pharmacol. 2015 Jul ;67(7):1017-27. Epub 2015 Mar 24. PMID: 25808583

Abstract Author(s):

Renan O Silva, Samara R B Damasceno, Tarcísio V Brito, Jordana M Dias, Amanda M Fontenele, Isabela S Braúna, José S C Júnior, Jeanny S Maciel, Regina C M de Paula, Ronaldo A Ribeiro, Marcellus H L P Souza, Ana L P Freitas, Jand-Venes R Medeiros, Draulio C Silva, André L R Barbosa

Article Affiliation:

Renan O Silva

Abstract:

OBJECTIVES: The aim of the study was to investigate the anti-inflammatory, antioxidant and antinociceptive actions of PFPe, a polysaccharide fraction isolated from the dried fruit of the Passiflora edulis.

METHODS: Animals were pretreated with PFPe (0.3, 1 or 3 mg/kg, i.p.) 1 h before induction of paw oedema by carrageenan, histamine, serotonin, compound 48/80 or prostaglandin E2 (PGE2). Neutrophil migration and vascular permeability were measured after carrageenan injection into the peritoneum, and the action of the PFPe on the tumour necrosis factor-alpha, interleukin-1 beta (IL-1β), myeloperoxidase (MPO), glutathione (GSH) and malondialdehyde (MDA) levels was also evaluated. To assay nociception, we examined acetic acid-induced writhing, formalin-induced paw licking and response latency in the hot plate test.

KEY FINDINGS: Pretreatment with PFPe significantly inhibited carrageenan-induced paw oedema. PFPe also reduced paw oedema induced by compound 48/80, histamine, serotonin, and PGE2 and compound 48/80-induced vascular permeability. In addition, PFPe significantly reduced the MPO activity, MDA and GSH concentrations, and IL-1β level. In the nociception tests, PFPe reduced acetic acid-induced writhing and formalin-induced paw licking and did not increase the response latency time.

CONCLUSIONS: Our results suggest that PFPe administration reduces the inflammatory response by modulation of the liberation or synthesis of histamine and serotonin, by reduction of neutrophil migration, IL-1β levels, and oxidative stress and nociception.

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