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Melatonin prevents memory impairment!

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Joined: Jul 09, 2006
Posts: 621
Location: Manassas, Virginia, USA

PostPosted: Fri Sep 08, 2017 2:44 am    Post subject: Melatonin prevents memory impairment! Reply with quote

Melatonin prevents memory impairment induced by high-fat diet: Role of oxidative stress

HFD induced memory impairment.

This impairment was correlated with oxidative stress in the hippocampus.

Melatonin prevented this impairment by protecting hippocampus antioxidant mechanisms.


Consumption of high-fat diet (HFD) induces oxidative stress in the hippocampus that leads to memory impairment. Melatonin has antioxidant and neuro-protective effects. In this study, we hypothesized that chronic administration of melatonin can prevent memory impairment induced by consumption of HFD. Melatonin was administered to rats via oral gavage (100 mg/kg/day) for 4 weeks. HFD was also instituted for the same duration. Behavioral studies were conducted to test spatial memory using the radial arm water maze. Additionally, oxidative stress biomarkers were assessed in the hippocampus. Results showed that HFD impaired both short- and long- term memory (P < 0.05), while melatonin treatment prevented such effects. Furthermore, melatonin prevented HFD-induced reduction in levels of GSH, and ratio of GSH/GSSG, and increase in GSSG in the hippocampus. Melatonin also prevented reduction in the catalase activity in hippocampus of animals on HFD. In conclusion, HFD induced memory impairment and melatonin prevented this impairment probably by preventing alteration of oxidative stress in the hippocampus.
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