Stroke is one of the most common causes of death in industrialized countries and a leading cause of permanent disability in adults worldwide. Elettaria cardamomum is a nutraceuticalis that is used widely and characterized by numerous properties, such as remarkable effects on anxiety-like behavior features.
This study aimed at determining the effect ofElettaria cardamomumessential oil and its major constituent (i.e., 1,8-cineole) on the brain injury caused by cerebral hypoperfusion among rats.
Cerebral hypoperfusion was induced in Wistar rats using the occlusion of the bilateral carotid artery for 30 min. Subsequently, Elettaria cardamomum essential oil (25, 50, and 75 mg/kg i.p.) and its major constituent (1,8-cineole) (5, 10, and 20 mg/kg i.p.) was injected to rats for 14 consecutive days. After the final treatment, blood samples were taken, and the brain tissues were separated and used for biochemical analysis by RT-PCRto detect the levels of proinflammatory cytokines.
Administration of Elettaria cardamomum essential oil and 1,8-cineole significantly decreased the malondialdehyde and nitric oxide levels in the blood and brain cortex of the rat. Additionally, Elettaria cardamomum essential oil and 1,8-cineole significantly suppressed the expression level of Caspase 3, IL-1β, TNF-α, and iNOS in the cerebral cortex.
The findings suggest that Elettaria cardamomum essential oilincludes remarkable neuroprotective impacts that may be beneficial to cerebral hypoperfusion treatment. The pharmacological property of Elettaria cardamomumpartly requires the modulation of inflammatory mediatorsand oxidative stress.
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