Cedrus atlantica (Endl.) Manetti ex Carrière Essential Oil Alleviates Pain and Inflammation with No Toxicity in Rodent
Omkulthom Al Kamaly; Asmaa Saleh; Aisha Al Sfouk; Ashwag S. Alanazi; Mohammad Khalid Parvez; Driss Ousaaid; Amine Assouguem; Hamza Mechchate; Mohamed Bouhrim
Cedrus atlantica (Endl.) Manetti ex Carriè:re is an endemic tree with spiritual value, and it was used since immemorial time in folk medicine. The present study aims to evaluate the anti-inflammatory (carrageenan-induced paw edema and formalin tests) and analgesic effects (hot plate and acetic acid writhing tests) of the cedarwood essential oil, as well as inspect any toxicity (acute toxicity), using several in vivo assays. Following the acetic acid writhing test and the hot plate test, the EO presented an excellent analgesic effect compared to the controls, especially with the dose of 50 mg/kg. Similar results were found while assessing the anti-inflammatory potential in the carrageenan-induced paw edema and formalin assays. The acute toxicity assessment and the subsequent monitoring of the animals, the biochemical analysis, and the relative organ weight, demonstrated a total safety of the EO. The GC/MS analysis of the composition revealed that the major compounds contained in this EO are beta-himachalene (51.95%), followed by alpha-himachalene (15.82%), and gamma-himachalene (12.15%). This study supports the usage of this tree EO to alleviate pain and inflammation.
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