Neuroprotective Effects of α-Tocotrienol on Kainic Acid-Induced Neurotoxicity in Organotypic Hippocampal Slice Cultures

International Journal of Molecular Sciences

Na Young Jung³  Kyung Hee Lee²  Ran Won¹ 

[1]Department of Biomedical Laboratory Science, Division of Health Science, Dongseo University, Busan 617-716, Korea

[2] E-Mail:

[3]Department of Dental Hygiene, Division of Health Science, Dongseo University, Busan 617-716, Korea

[4] E-Mail:

[5]Department of Physiology, Brain Korea 21 Project for Medical Science, Yonsei University College of Medicine, Seoul 120-752, Korea

[6] E-Mail:

关键词: kainic acid;    organotypic hippocampal slice culture;    antioxidant;    alpha-tocopherol;    alpha-tocotrienol;   

DOI  :  10.3390/ijms140918256

来源: mdpi

【 摘 要 】

Vitamin E, such as alpha-tocopherol (ATPH) and alpha-tocotrienol (ATTN), is a chain-breaking antioxidant that prevents the chain propagation step during lipid peroxidation. In the present study, we investigated the effects of ATTN on KA-induced neuronal death using organotypic hippocampal slice culture (OHSC) and compared the neuroprotective effects of ATTN and ATPH. After 15 h KA (5 μM) treatment, delayed neuronal death was detected in the CA3 region and reactive oxygen species (ROS) formation and lipid peroxidation were also increased. Both co-treatment and post-treatment of ATPH (100 μM) or ATTN (100 μM) significantly increased the cell survival and reduced the number of TUNEL-positive cells in the CA3 region. Increased dichlorofluorescein (DCF) fluorescence and levels of thiobarbiturate reactive substances (TBARS) were decreased by ATPH and ATTN treatment. These data suggest that ATPH and ATTN treatment have protective effects on KA-induced cell death in OHSC. ATTN treatment tended to be more effective than ATPH treatment, even though there was no significant difference between ATPH and ATTN in co-treatment or post-treatment.

【 授权许可】

CC BY   
© 2013 by the authors; licensee MDPI, Basel, Switzerland