Antinociceptive, anti-inflammatory and gastroprotective effects of a hydroalcoholic extract from the leaves of Eugenia punicifolia (Kunth) DC. in rodents

Autor(es):Mostrar menos -

Basting, Rosanna T. ^[1] ; Nishijima, Catarine M. ^[1] ; Lopes, Juliana A. ^[1] ; Santos, Raquel C. ^[1] ; Perico, Larissa Lucena ^[1] ; Laufer, Stefan ^[2] ; Bauer, Silke ^[2] ; Costa, Miriam F. ^[3] ; Santos, Lourdes C. ^[3] ; Rocha, Lucia R. M. ^[1] ; Vilegas, Wagner ^[4] ; Santos, Adair R. S. ^[5] ; dos Santos, Catarina ^[6] ; Hiruma-Lima, Clelia A. ^[1]

Afiliação do(s) autor(es)

^[1] Univ Estadual Paulista UNESP, Dept Fisiol, Inst Biociencias, BR-18618970 Botucatu, SP - Brazil

^[2] Univ Tubingen, Inst Pharm, Dept Pharmaceut & Med Chem, D-72076 Tubingen - Germany

^[3] Univ Estadual Paulista UNESP, Dept Quim Organ, Inst Quim, BR-14800900 Araraquara, SP - Brazil

^[4] Univ Estadual Paulista UNESP, BR-11330900 Sao Vicente, SP - Brazil

^[5] Univ Fed Santa Catarina, Dept Ciencias Fisiol, BR-88040900 Florianopolis, SC - Brazil

^[6] Univ Estadual Paulista UNESP, Dept Ciencias Biol, Fac Ciencias & Letras, BR-19806900 Assis, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Journal of Ethnopharmacology; v. 157, p. 257-267, NOV 18 2014.
• Citações Web of Science: 7

Resumo

Ethnopharmacological relevance: An ethnopharmacological survey indicated that leaves from Eugenia punicifolia (Kunth) DC. (Myrtaceae) are popularly used as a natural therapeutic agent to treat pain and inflammation. Aim of the study: The overall objective of the present study was to evaluate the antinociceptive, anti-inflammatory and gastroprotective activities of a hydroalcoholic extract of leaves from Eugenia punicifolia (HEEP) in rodents. Material and methods: The antinociceptive effects of HEEP were evaluated in mice after oral administration in chemical (formalin and glutamate) and thermal (hot-plate) tests. We evaluated the involvement of the glutamatergic, opioidergic and nitrergic pathways in the antinociception of HEEP and the effect of HEEP on the inhibition of p38 alpha MAPK The anti-inflammatory effect of HEEP was evaluated in mice and rats using xylene-induced ear edema and carrageenan-induced paw edema, respectively. Furthermore, the gastroprotective effect of HEEP was evaluated in rats with acute gastric lesions induced by ethanol or indomethacin. Finally, we performed a phytochemical analysis of HEEP. Results: The oral administration of HEEP (125, 250 and 500 mg/kg, p.o.) significantly inhibited the neurogenic and inflammatory phases of formalin-induced licking, and HEEP (250 mg/kg, p.o.) also significantly inhibited the nociception caused by glutamate. The antinociceptive effects of HEEP were significantly reversed by L-arginine (500 mg/kg, i.p.) but not by naloxone (1 mg/kg, i.p.) in the formalin test HEEP did not affect animal motor performance in the rotarod model. In addition, HEEP also increased the paw withdraw latency in the hot-plate test HEEP significantly inhibited ear edema induced by xylene (64%) and paw edema induced by carrageenan (50%) compared to the control group. Furthermore, HEEP (3-30 mg/mL) also inhibited the phosphorylation of p38 alpha MAPK by approximately 90%. In addition, HEEP (125, 250 and 500 mg/kg, p.o.) protected the rats against ethanol (88.4-99.8%) and indomethacin (53-723%) and increased the mucus levels of the gastric mucosa without producing an antisecretory effect The phytochemical profile of HEEP obtained using HPLC-PDA showed secondary metabolites already reported for the genus, mostly flavonoids, gallotannins and proanthocyanidins. Conclusions: These data show for the first time that HEEP has significant antinociceptive and anti-inflammatory effects, which appear to be related to the inhibition of the glutamatergic system, the synthesis of nitric oxide and the inhibition of the phosphorylation of p38 alpha MAPK. HEEP also has interesting gastroprotective effects related to the maintenance of protective factors, such as mucus production. These results support the use of Eugenia punicifolia in popular medicine and demonstrate that this plant has therapeutic potential for the development of phytomedicines with antinociceptive, anti-inflammatory and gastroprotective properties. (C) 2014 Elsevier Ireland Ltd. All rights reserved. (AU)

• Processo FAPESP: 11/20145-8 - Avaliação da atividade anti-inflamatória e anti-nociceptiva do extrato hidroalcoólico de Eugenia punicifolia (Kunth) DC
• Beneficiário: Rosanna Tarkany Basting
• Modalidade de apoio: Bolsas no Brasil - Iniciação Científica
• Processo FAPESP: 09/52237-9 - Fitoterápicos padronizados como alvo para o tratamento de doenças crônicas
• Beneficiário: Wagner Vilegas
• Modalidade de apoio: Auxílio à Pesquisa - Programa BIOTA - Temático