期刊
FOOD AND CHEMICAL TOXICOLOGY
卷 49, 期 4, 页码 1011-1019出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.fct.2011.01.008
关键词
Lonicera japonica THUNB.; Hydrogen peroxide; Oxidative stress; Apoptosis; Neurodegenerative diseases
资金
- Brain Research Center of the 21st Century Frontier Research Program, Republic of Korea [2010K000812]
We investigated the neuroprotective effects of Lonicera japonica THUNB. (Caprifoliaceae) (LJ) extract against hydrogen peroxide (H2O2), a toxin created by oxidative stress and implicated in neurodegenerative diseases, in human SH-SY5Y neuroblastoma cells. We examined the effects of LJ against H2O2-induced cytotoxicity, apoptosis, the production of reactive oxygen species (ROS), the proteolysis of cleaved poly-ADP-ribose polymerase (PARP), and the expression of Bcl-2, Bcl-xL, and cleaved caspase-3. Moreover, we attempted to determine whether LJ suppressed the phosphorylation of Akt, c-Jun N-terminal kinase (JNK), p38 mitogen-activated protein kinase (MAPK), and extracellular signal-regulated kinase 1/2 (ERK 1/2). We found that LJ improved cell viability, inhibited cytotoxicity and apoptosis, and attenuated elevations in ROS and nuclear condensation. In addition, Li showed radical scavenging ability in 2-diphenyl-1-picrylhydrazyl (DPPH) and 2,2-azinobis-(3-ethyl-benzthiazoline-6-sulfonic acid) (ABTS) assays. Western blot data revealed that LJ inhibited H2O2-induced up- and down-regulation of cleaved PARP, cleaved caspase-3. Bcl-2, and Bcl-xL. Furthermore, Li significantly attenuated the H2O2-induced phosphorylation of Akt, JNK, p38 MAPK, and ERK1/2. These results demonstrate that LJ possesses potent neuroprotective activity. Its potential to treat neurodegenerative diseases warrants further research. Crown Copyright (C) 2011 Published by Elsevier Ltd. All rights reserved.
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