Journal
LIBYAN JOURNAL OF MEDICINE
Volume 8, Issue -, Pages -Publisher
TAYLOR & FRANCIS LTD
DOI: 10.3402/ljm.v8i0.22520
Keywords
essential oils; rose geranium; citronellol; anti-inflammatory effect; skin inflammation; histopathology; carrageenan; croton
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Background: Since the available anti-inflammatory drugs exert an extensive variety of side effects, the search for new anti-inflammatory agents has been a priority of pharmaceutical industries. Aims: The aim of the present study was to assess the anti-inflammatory activities of the essential oil of rose geranium (RGEO). Methods: The chemical composition of the RGEO was investigated by gas chromatography. The major components were citronellol (29.13%), geraniol (12.62%), and citronellyl formate (8.06%). In the carrageenan-induced paw edema, five different groups were established and RGEO was administered orally in three different doses. Results: RGEO (100 mg/kg) was able to significantly reduce the paw edema with a comparable effect to that observed with diclofenac, the positive control. In addition, RGEO showed a potent anti-inflammatory activity by topical treatment in the method of croton oil-induced ear edema. When the dose was 5 or 10 mu l of RGEO per ear, the inflammation was reduced by 73 and 88%, respectively. This is the first report to demonstrate a significant anti-inflammatory activity of Algerian RGEO. In addition, histological analysis confirmed that RGEO inhibited the inflammatory responses in the skin. Conclusion: Our results indicate that RGEO may have significant potential for the development of novel anti-inflammatory drugs with improved safety profile.
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