The Potential of Cinnamon Extract (Cinnamomum burmanii) as Anti-insomnia Medication through Hypothalamus Pituitary Adrenal Axis Improvement in Rats
Objective. This study aimed to explore the efficacy of cinnamon extract as an anti-insomnia medication in experimental animals by evaluating the levels of hormones and neurotransmitters related to insomnia. Materials and Methods. A total of 30 male Wistar rats were divided into six groups. Induction of insomnia in animal models was done by administration of p-chloro-phenylalanine (PCPA) compounds. Estazolam was administrated to the positive control group. Cinnamon extract administration was divided into 3 doses, namely: 25 mg/kg BW, 50 mg/kg BW and 100 mg/kg BW. Evaluation of the organ coefficient was conducted to evaluate drug toxicity to the organs. The enzyme-linked-immunoassay method assessed hormones and neurotransmitters in the serum and hypothalamus related to insomnia. Results. There was a decrease in the adrenal coefficient in the cinnamon extract group compared to the PCPA group (0.011+0.001, P<0.05). In addition, there was a decrease in the corticotropin-releasing hormone, adrenocorticotropin hormone, and corticosterone levels in the serum of animals who received cinnamon extract. Our study found a dose of cinnamon extract of 50 mg/kg BW was the best dose to balance neurotransmitter levels in insomniac rats.
Conclusion. The cinnamon extract increased serotonin and melatonin levels and decreased norepinephrine levels in the insomnia-induced group. Cinnamon extract has potential as an anti-insomnia medication through hypothalamus-pituitaryadrenal axis improvement and brain neurotransmitter regulation in an animal model of insomnia.
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