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Mol Neurobiol. 2018 Sep;55(9):7271-7284. doi: 10.1007/s12035-018-0899-x. Epub 2018 Feb 3.

Anti-Oxidative Effects of Melatonin Receptor Agonist and Omega-3 Polyunsaturated Fatty Acids in Neuronal SH-SY5Y Cells: Deciphering Synergic Effects on Anti-Depressant Mechanisms.

Author information

1
Department of Psychiatry & Mind-Body Interface Laboratory (MBI-Lab), China Medical UniversityHospital, No. 2, Yuh-Der Road, Taichung, 404, Taiwan.
2
School of Nutrition and Health Sciences, Taipei Medical University, Taipei, Taiwan.
3
Department of Oral Hygiene, College of Dental Medicine, Kaohsiung Medical University, Kaohsiung, 80708, Taiwan.
4
College of Medicine, China Medical University, Taichung, Taiwan.
5
Medical University of Łódź, Łódź, Poland.
6
Department of Psychiatry and Psychotherapy, Medical University of Vienna, Vienna, Austria.
7
Institute of Psychiatry, King's College London, London, UK.
8
Department of Psychiatry & Mind-Body Interface Laboratory (MBI-Lab), China Medical UniversityHospital, No. 2, Yuh-Der Road, Taichung, 404, Taiwan. cobolsu@gmail.com.
9
College of Medicine, China Medical University, Taichung, Taiwan. cobolsu@gmail.com.
10
Institute of Psychiatry, King's College London, London, UK. cobolsu@gmail.com.

Abstract

Omega-3 polyunsaturated fatty acids (n-3 or omega-3 PUFAs) and melatonin receptor agonist ramelteon (RMT) both display antidepressant effects, while their cellular effects on anti-oxidative and neuroprotective mechanisms might be different. In this study, we aimed to decipher the individual and synergistic actions of n-3 PUFAs and RMT, as compared with the conventional antidepressant fluoxetine (FLX), in a cellular model of oxidative stress, which might play an important role in the pathophysiology of depression and associated disorders. We investigated the rescue and prevention effects of FLX, RMT, and n-3 PUFAs, e.g., eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA), by using cell viability in SH-SY5Y cells under oxidative stress along with measurements of key cellular markers of oxidative stress, inflammatory, and neuroprotection. The results revealed that the RMT and EPA combination significantly increased the cell viability in a dose-dependent manner. RMT showed preventive effects, FLX and DHA possessed rescue effects, while EPA showed both rescue and preventive effects. We observed the dose-dependent activation and translocation of nuclear factor-κB to the nucleus augmented by the expressions of peroxisome proliferator activator receptor-gamma, tyrosine hydroxylase, c-Fos expression, and reactive oxygen species, implying that RMT and EPA combination reversed oxidative and neuroinflammatory pathophysiology and protected the neuronal cells from further damage. The results demonstrated that RMT and EPA synergistically provide effective neuroprotective, anti-oxidative/inflammatory effect against oxidative stress. Our study provides pre-clinical evidence to conduct future clinical trials of using n-3 PUFAs/RMT combination in depressive disorders.

KEYWORDS:

Circadian rhythm; Depression; EPA DHA; Omega-3 fatty acids; Oxidative stress; Ramelteon

PMID:
29397559
DOI:
10.1007/s12035-018-0899-x
[Indexed for MEDLINE]

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