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Mar. Drugs 2017, 15(3), 83; doi:10.3390/md15030083

An Extract from Shrimp Processing By-Products Protects SH-SY5Y Cells from Neurotoxicity Induced by Aβ25–35

1
Research Institute for Marine Drugs and Nutrition, College of Food Science and Technology, Guangdong Ocean University, Zhanjiang 524088, China
2
Department of Psychology and Neuroscience, Dalhousie University, Halifax, NS B3H 4R2, Canada
3
Coastal Zones Research Institute Inc., 232B, avenue de l’Église, Shippagan, NB E8S 1J2, Canada
4
Aquatic and Crop Resource Development, National Research Council of Canada, 1411 Oxford Street, Halifax, NS B3H 3Z1, Canada
5
Graduate Institute of Neural and Cognitive Sciences, China Medical University Hospital, Taichung 40402, Taiwan
6
Aquatic and Crop Resource Development, National Research Council of Canada, 550 University Avenue, Charlottetown, PE C1A 4P3, Canada
*
Author to whom correspondence should be addressed.
Academic Editors: Rosário Domingues, Ricardo Calado and Pedro Domingues
Received: 8 December 2016 / Revised: 7 March 2017 / Accepted: 15 March 2017 / Published: 22 March 2017
(This article belongs to the Special Issue Marine Lipids 2017)
View Full-Text   |   Download PDF [3420 KB, uploaded 22 March 2017]   |  

Abstract

Increased evidence suggests that marine unsaturated fatty acids (FAs) can protect neurons from amyloid-β (Aβ)-induced neurodegeneration. Nuclear magnetic resonance (NMR), high performance liquid chromatography (HPLC) and gas chromatography (GC) assays showed that the acetone extract 4-2A obtained from shrimp Pandalus borealis industry processing wastes contained 67.19% monounsaturated FAs and 16.84% polyunsaturated FAs. The present study evaluated the anti-oxidative and anti-inflammatory effects of 4-2A in Aβ25–35-insulted differentiated SH-SY5Y cells. Cell viability and cytotoxicity were measured by using 3-(4,5-Dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) and lactate dehydrogenase (LDH) assays. Quantitative PCR and Western blotting were used to study the expression of neurotrophins, pro-inflammatory cytokines and apoptosis-related genes. Administration of 20 μM Aβ25–35 significantly reduced SH-SY5Y cell viability, the expression of nerve growth factor (NGF) and its tyrosine kinase TrkA receptor, as well as the level of glutathione, while increased reactive oxygen species (ROS), nitric oxide, tumor necrosis factor (TNF)-α, brain derived neurotrophic factor (BDNF) and its TrkB receptor. Aβ25–35 also increased the Bax/Bcl-2 ratio and Caspase-3 expression. Treatment with 4-2A significantly attenuated the Aβ25–35-induced changes in cell viability, ROS, GSH, NGF, TrkA, TNF-α, the Bax/Bcl-2 ratio and Caspase-3, except for nitric oxide, BDNF and TrKB. In conclusion, 4-2A effectively protected SH-SY5Y cells against Aβ-induced neuronal apoptosis/death by suppressing inflammation and oxidative stress and up-regulating NGF and TrKA expression. View Full-Text
Keywords: Acetone extract from shrimp processing by-product (4-2A); polyunsaturated fatty acids; Aβ25–35; human neuroblastoma cell (SH-SY5Y); neuroprotection; Alzheimer’s disease (AD) Acetone extract from shrimp processing by-product (4-2A); polyunsaturated fatty acids; 25–35; human neuroblastoma cell (SH-SY5Y); neuroprotection; Alzheimer’s disease (AD)
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Zhang, Y.; Jiao, G.; Song, C.; Gu, S.; Brown, R.E.; Zhang, J.; Zhang, P.; Gagnon, J.; Locke, S.; Stefanova, R.; Pelletier, C.; Zhang, Y.; Lu, H. An Extract from Shrimp Processing By-Products Protects SH-SY5Y Cells from Neurotoxicity Induced by Aβ25–35. Mar. Drugs 2017, 15, 83.

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