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Mouririelliptica: validation of gastroprotective, healing and anti-Helicobacter pylori effects
Fábio Cruz Moleiro1, Márcio Aparecido Andreo, Raquel de Cássia Dos Santos
1São Paulo State University-Departamento de Fisiologia, Instituto de Biociências, Cp 610, CEP 18618-000, UNESP, Botucatu, SP, Brazil.
Ethnopharmacological Relevance:
Mouriri elliptica Martius (Melastomataceae) is species reputed in folk medicine to heal gastric ulcer and gastritis.
Aim Of The Study:
Methanolic extract (ME) and ethyl acetate fraction (EAF) from leaves of Mouriri elliptica were evaluated for their gastroprotective, healing, immunological, toxicological and anti-Helicobacter pylori activities.
Material And Methods:
The gastroprotective action of ME and EAF was evaluated in rodent experimental models and to elucidate mechanisms of action, the antisecretory action, involvements of NO, SH, PGE(2), anti-Helicobacter pylori action of ME was evaluated. We also used immunohistochemical (PCNA and COX-2) and immunomodulatory (murine peritoneal macrophages) assays to evaluate Mouriri elliptica effects.
Results:
ME present gastroprotective action without antisecretory effect. Otherwise, ME showed anti-Helicobacter pylori action (MIC=0.025mug/mL) and was able to inhibit NO production by macrophages. This species also accelerate the healing of ulcerated gastric mucosa by stimulating proliferation factors (PCNA), COX-2 and maintained basal PGE(2) level independent action of NSAID in gastric mucosa. The phytochemical investigation showed that this species possesses phenolic acid derivatives, acylglycoflavonoids and condensed tannins which probably influenced their pharmacological action.
Conclusion:
All these results suggest the efficacy and safety of Mouriri elliptica in combating and healing gastric ulcer.
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