PMID- 24584758 OWN - NLM STAT- MEDLINE DCOM- 20150709 LR - 20220317 IS - 1993-0402 (Electronic) IS - 1672-0415 (Linking) VI - 20 IP - 11 DP - 2014 Nov TI - Effects of 5-hydroxymethyl furfural extracted from Rehmannia glutinosa Libosch on the expression of signaling molecules relevant to learning and memory among hippocampal neurons exposed to high concentration of corticosterone. PG - 844-9 LID - 10.1007/s11655-014-1830-6 [doi] AB - OBJECTIVE: To determine the effects of 5-hydroxymethyl furfural (5-HMF), an extract of Rehmannia glutinosa Libosch, on several down-regulated signaling molecules involved in learning and memory in hippocampal neurons. METHODS: After cultured for 7 days, primary hippocampal neurons were divided into 5 groups: normal, corticosterone model, RU38486, 5-HMF, and donepezil group. Neuron survival rates were calculated 24 h later using SYTO13-PI double-fluorescence staining and an 3-(4,5-Dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay. beta-galactosidase activity was also assayed. Protein expressed by the glucocorticoid receptor (GCR), brainderived neurotrophic factor (BDNF), and N-methyl-D-aspartate receptor 2B (NR2B), as well as phosphorylationcyclic adenosine monophosphate (cAMP) response element binding protein (p-CREB), phosphorylation-extracellular signal-regulated kinase (p-ERK), and phosphorylation-synapsin (p-synapsin) were quantified with Western blot. RESULTS: Hippocampal neuron survival rates and the above-mentioned proteins were dramatically decreased (P<0.05), beta-galactosidase activity was significantly increased in the model group. but the effect was reversed by 5-HMF, RU38486, and to a lesser extent by donepezil (P<0.05). CONCLUSION: 5-HMF extracts from the Chinese herb Rehmannia glutinosa Libosch could protect hippocampal neurons from glucocorticoid injury and from down-regulated signaling molecules in the GCR-BDNF-NR2B-p-ERK-p-CREB-p-synapsin signal transduction pathway. FAU - Zhang, Li-Na AU - Zhang LN AD - Department of Biochemistry, Institute of Basic Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai, 201203, China. FAU - Jin, Guo-Qin AU - Jin GQ FAU - Zhang, Xue-Li AU - Zhang XL FAU - Gong, Zhang-Bin AU - Gong ZB FAU - Gu, Cui-Ying AU - Gu CY LA - eng PT - Journal Article DEP - 20140302 PL - China TA - Chin J Integr Med JT - Chinese journal of integrative medicine JID - 101181180 RN - 70ETD81LF0 (5-hydroxymethylfurfural) RN - DJ1HGI319P (Furaldehyde) RN - W980KJ009P (Corticosterone) SB - IM MH - Animals MH - Blotting, Western MH - Corticosterone/*pharmacology MH - Furaldehyde/*analogs & derivatives/isolation & purification/pharmacology MH - Hippocampus/cytology/*drug effects MH - Learning/*drug effects MH - Memory/*drug effects MH - Neurons/drug effects MH - Rats MH - Rats, Sprague-Dawley MH - Rehmannia/*chemistry MH - Signal Transduction/*drug effects EDAT- 2014/03/04 06:00 MHDA- 2015/07/15 06:00 CRDT- 2014/03/04 06:00 PHST- 2013/07/03 00:00 [received] PHST- 2014/03/04 06:00 [entrez] PHST- 2014/03/04 06:00 [pubmed] PHST- 2015/07/15 06:00 [medline] AID - 10.1007/s11655-014-1830-6 [doi] PST - ppublish SO - Chin J Integr Med. 2014 Nov;20(11):844-9. doi: 10.1007/s11655-014-1830-6. Epub 2014 Mar 2.