Abstract
In this study, we investigated the effects of a normal diet (ND) and high-fat diet (HFD) on delayed neuronal death in the gerbil hippocampal CA1 region after transient cerebral ischemia. In the HFD-fed gerbils, ischemia-induced hyperactivity was significantly increased and neuronal damage was represented more severely compared to the ND-fed gerbils. Ischemia-induced glial activation was accelerated in the HFD-fed gerbils. Cytokines including interleukin-2 and -4 were more sensitive in the hippocampal CA1 region of the HFD-fed gerbils after ischemia-reperfusion. Additionally, we found that decreased 4-HNE and SODs immunoreactivity and protein levels in the hippocampal CA1 region of the HFD-fed gerbils after ischemia-reperfusion. These results indicate that HFD may lead to the exacerbated effects on ischemia-induced neuronal death in the hippocampal CA1 region after ischemia-reperfusion. These effects of HFD may be associated with more accelerated activations of glial cells and imbalance of pro- and anti-inflammatory cytokines and/or antioxidants after transient cerebral ischemia.
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Acknowledgments
The authors would like to thank Mr. Seung Uk Lee for his technical help in this study. This research was supported by Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Science, ICT and future Planning (NRF-2014R1A2A2A01005307), and by the National Research Foundation of Korea (NRF-2013M3A9B6046563), which was funded by the Ministry of Science, ICT, and Future Planning.
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The authors have no financial conflict of interest.
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Bing Chun Yan and Joon Ha Park have contributed equally to this article.
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Yan, B.C., Park, J.H., Ahn, J.H. et al. Effects of High-Fat Diet on Neuronal Damage, Gliosis, Inflammatory Process and Oxidative Stress in the Hippocampus Induced by Transient Cerebral Ischemia. Neurochem Res 39, 2465–2478 (2014). https://doi.org/10.1007/s11064-014-1450-8
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DOI: https://doi.org/10.1007/s11064-014-1450-8