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Qualea parviflora Mart.: An integrative study to validate the gastroprotective, antidiarrheal, antihemorragic and mutagenic action
Ist Teil von
Journal of ethnopharmacology, 2010-02, Vol.127 (2), p.508-514
Ort / Verlag
Shannon: Elsevier Ireland Ltd
Erscheinungsjahr
2010
Quelle
Elsevier ScienceDirect Journals
Beschreibungen/Notizen
Qualea parviflora Mart. is a medicinal species commonly found in the Brazilian Cerrado biome.
Based on ethnopharmacological data, methanolic extract from
Qualea parviflora (QP) bark was evaluated for its antiulcer, analgesic, anti-hemorrhagic, mutagenic and anti-
Helicobacter pylori activities.
The gastroprotective action of the extract was evaluated in rodent experimental models (HCl/ethanol, ethanol or NSAID). We also evaluated mutagenic effect (Ames assay), anti-
Helicobacter pylori, anti-hemorrhagic action, analgesic and inflammatory effects (hot-plate test and carrageenin-induced hind paw edema) of methanolic extract from
Qualea parviflora.
QP (500
mg/kg, p.o.) was able to protect gastric mucosa against HCl/ethanol solution (77%), absolute ethanol (97%), and also against injurious effect of NSAID (36%). When QP was challenged with sulfhydryl depletor compound, the gastroprotective action of extract was abolished. QP treatment was able to maintain the GSH level and show a concentration-dependent inhibition effect on the lipid peroxidation. QP present anti-
Helicobacter pylori effect (MIC
=
75
μg/mL), anti-hemorrhagic and antidiarrheal action but not present analgesic or anti-inflammatory effect.
methanolic extract from
Qualea parviflora had gastroprotective effect related to the increase of gastric mucosa defensive factors such PGE
2 levels and maintain the basal gastric glutathione levels. The methanolic extract also showed anti-
Helicobacter pylori activity, anti-hemorrhagic effect and antioxidant action, but absence of analgesic, mutagenic and toxic effects, a profile that adds safety to its use.