PMID- 22431394 OWN - NLM STAT- MEDLINE DCOM- 20121005 LR - 20211203 IS - 1097-4547 (Electronic) IS - 0360-4012 (Linking) VI - 90 IP - 8 DP - 2012 Aug TI - Effects of pyridoxine on a high-fat diet-induced reduction of cell proliferation and neuroblast differentiation depend on cyclic adenosine monophosphate response element binding protein in the mouse dentate gyrus. PG - 1615-25 LID - 10.1002/jnr.23035 [doi] AB - In this study, we challenged pyridoxine to mice fed a high-fat diet (HFD) and investigated the effects of pyridoxine on HFD-induced phenotypes such as blood glucose, reduction of cell proliferation and neuroblast differentiation in the dentate gyrus using Ki67 and doublecortin (DCX), respectively. Mice were fed a commercially available low-fat diet (LFD) as control diet or HFD (60% fat) for 8 weeks. After 5 weeks of LFD or HFD treatment, 350 mg/kg pyridoxine was administered for 3 weeks. The administration of pyridoxine significantly decreased body weight in the HFD-treated group. In addition, there were no significant differences in hepatic histology and pancreatic insulin-immunoreactive (-ir) and glucagon-ir cells of the HFD-treated group after pyridoxine treatment. In the HFD-fed group, Ki67-positive nuclei and DCX-ir neuroblasts were significantly decreased in the dentate gyrus compared with those in the LFD-fed mice. However, the administration of pyridoxine significantly increased Ki67-positive nuclei and DCX-ir neuroblasts in the dentate gyrus in both LFD- and HFD-fed mice. In addition, the administration of pyridoxine significantly increased the protein levels of glutamic acid decarboxylase 67 (GAD67) and brain-derived neurotrophic factor (BDNF) and the immunoreactivity of phosphorylated cyclic AMP response element binding protein (pCREB) compared with the vehicle-treated LFD- and HFD-fed mice. In contrast, the administration of pyridoxine significantly decreased HFD-induced malondialdehyde (MDA) levels in the hippocampus. These results showed that pyridoxine supplement reduced the HFD-induced reduction of cell proliferation and neuroblast differentiation in the dentate gyrus via controlling the levels of GAD67, pCREB, BDNF, and MDA. CI - Copyright (c) 2012 Wiley Periodicals, Inc. FAU - Yoo, Dae Young AU - Yoo DY AD - Department of Anatomy and Cell Biology, College of Veterinary Medicine, and Research Institute for Veterinary Science, Seoul National University, Seoul, South Korea. FAU - Kim, Woosuk AU - Kim W FAU - Yoo, Ki-Yeon AU - Yoo KY FAU - Nam, Sung Min AU - Nam SM FAU - Chung, Jin Young AU - Chung JY FAU - Yoon, Yeo Sung AU - Yoon YS FAU - Won, Moo-Ho AU - Won MH FAU - Hwang, In Koo AU - Hwang IK LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20120319 PL - United States TA - J Neurosci Res JT - Journal of neuroscience research JID - 7600111 RN - 0 (Dcx protein, mouse) RN - 0 (Doublecortin Protein) RN - 12001-76-2 (Vitamin B Complex) RN - EC 2.3.1.48 (CREB-Binding Protein) RN - KV2JZ1BI6Z (Pyridoxine) SB - IM MH - Animals MH - Blotting, Western MH - Body Weight/drug effects MH - CREB-Binding Protein/*metabolism MH - Cell Differentiation/drug effects MH - Cell Proliferation/drug effects MH - Dentate Gyrus/*drug effects/metabolism MH - Diet, High-Fat/*adverse effects MH - Doublecortin Protein MH - Immunohistochemistry MH - Male MH - Mice MH - Mice, Inbred C57BL MH - Neural Stem Cells/*drug effects/metabolism MH - Pyridoxine/*pharmacology MH - Vitamin B Complex/*pharmacology EDAT- 2012/03/21 06:00 MHDA- 2012/10/06 06:00 CRDT- 2012/03/21 06:00 PHST- 2011/06/24 00:00 [received] PHST- 2011/12/28 00:00 [revised] PHST- 2012/01/07 00:00 [accepted] PHST- 2012/03/21 06:00 [entrez] PHST- 2012/03/21 06:00 [pubmed] PHST- 2012/10/06 06:00 [medline] AID - 10.1002/jnr.23035 [doi] PST - ppublish SO - J Neurosci Res. 2012 Aug;90(8):1615-25. doi: 10.1002/jnr.23035. Epub 2012 Mar 19.