Abstract：
:The ameliorating effects of the ethyl acetate fraction from Dendropanax morbifera (EFDM) on cognitive impairment in high-fat diet (HFD)-induced diabetic mice were examined by measuring its possible pharmacological activities. Administration of EFDM (20 and 50mg/kg body weight) in HFD-induced diabetic mice significantly improved glucose tolerance status in the intraperitoneal glucose tolerance test (IPGTT). In animal experiments using Y-maze, passive avoidance and Morris water maze tests, the cognitive and behavioral disorders in HFD-induced diabetic mice were considerably recovered by regulating cholinergic systems, including acetylcholine (ACh) levels and acetylcholinesterase (AChE) inhibition, and antioxidant systems, including superoxide dismutase (SOD), glutathione (GSH), oxidized GSH, and malondialdehyde (MDA) levels. Furthermore, HFD-induced abnormal activity of mitochondria were also significantly protected by the improvement of the c-Jun N-terminal protein kinase (JNK) signaling pathway with phosphorylated JNK (p-JNK), phosphorylated insulin receptor substrate (p-IRS), serine/threonine protein kinase (Akt), phosphorylated Akt (p-Akt), and phosphorylated tau (p-tau). Finally, rutin, orientin, isoorientin, and luteolin-7-O-rutinoside as the main phenolics of EFDM were identified using ultra-performance liquid chromatography/quadrupole time of flight tandem mass spectrometry (UPLC-QTOF/MS(2)). These findings suggest that EFDM may have an effect as a multiple preventive substances to reduce diabetes-associated cognitive dysfunction.
journal_name
Behav Brain Resjournal_title
Behavioural brain researchauthors
Kim JM,Park SK,Guo TJ,Kang JY,Ha JS,Lee du S,Lee U,Heo HJdoi
10.1016/j.bbr.2016.06.013subject
Has Abstractpub_date
2016-10-01 00:00:00pages
39-54eissn
0166-4328issn
1872-7549pii
S0166-4328(16)30367-9journal_volume
312pub_type
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