DHA-rich fish oil and Tualang honey reduce chronic stress-induced oxidative damage in the brain of rat model

10.1016/j.jtcme.2021.10.001

Mohd Asnizam Asari；K.N.S. Sirajudeen；Nurul Aiman Mohd Yusof；Mohamad Syabil Ikhwan Mohd Amin

Oxidative stress ； Honey ； DHA ； Omega-3 ； Restraint stress

Journal of Traditional and Complementary Medicine

12卷4期（2022 / 07 / 01）

361 - 366

英文

Background: Exposure to chronic stress induces oxidative damage which alters the dynamic balance between antioxidant and pro-oxidant activities in the brain. Tualang honey (TH) is a Malaysian wild multifloral honey which has been shown to contain high amount antioxidants. DHA-rich fish oil is a form of omega-3 fatty acids found in fish which also possesses some antioxidant activity. This study aimed to evaluate anti-stress activity of DHA-rich fish oil, TH and their combination on several parameters of oxidative stress in chronic stress rat model. Methods: Fifty male Sprague Dawley rats were divided into (i) control, (ii) stress-exposed, (iii) stress-exposed and treated with TH (1 g/kg body weight twice daily), (iv) stress-exposed and treated with DHA-rich fish oil (450 mg/kg body weight twice daily), and (v) stress-exposed and treated with a combination of TH and DHA-rich fish oil. The chronic stress regimen consisted of a combination of restraint stress and a swim stress test for 28 days. Results: DHA-rich fish oil and TH significantly (p ＜ 0.05) supressed stress-induced elevation of serum corticosterone and lipid peroxidation, and caused a significant increase in total antioxidant capacity. For glutathione status, only TH significantly reduced stress-induced elevation of oxidised glutathione (GSSG) and normalised GSH/GSSG ratio. Conclusion: Both DHA-rich fish oil and TH have protective effects against brain oxidative stress but consuming these substances together does not seem to provide an additional benefit compared to consuming them separately.

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