Journal
JOURNAL OF ETHNOPHARMACOLOGY
Volume 107, Issue 2, Pages 277-284Publisher
ELSEVIER IRELAND LTD
DOI: 10.1016/j.jep.2006.03.011
Keywords
Achillea millefolium; yarrow; medicinal plants; antiulcer; preclinical toxicity
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Achillea millefolium L. (Asteraceae), popularly known as yarrow, has been used in folk medicine to treat complaints such as inflammation, pain, wounds, hemorrhages and gastrointestinal disturbances. The aim of the present study was to assess the safety and efficacy of the aqueous extract (AE) of the plant after chronic exposure. Indeed, the AE was effective in protecting the gastric mucosa against acute gastric lesions induced by ethanol and indomethacin and in healing chronic gastric lesions induced by acetic acid with (ED50 = 32 mg/kg, p.o.). Safety studies were performed in female and male Wistar rats treated daily with AE (0.3-1.2 g/kg, p.o./day) or vehicle (water, 10 ml/kg/day) for 28 or 90 consecutive days. Satellite groups consisted of animals sacrificed 30 days after the end of these treatments. Clinical observations, body and organ weight measurements, gross autopsy, hematology, clinical biochemical and histopathological examinations were performed. Slight changes in liver weight, cholesterol, HDL-cholesterol and glucose were observed in male and female animals. These changes were not correlated with dose or time of exposure of the animals to the AE. Overall, the results show the antiulcer potential of the aerial parts of the Achillea millefolium which is accompanied by no signs of relevant toxicity even at very long chronic exposure. (c) 2006 Elsevier Ireland Ltd. All rights reserved.
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