Dendropanax morbifera Léveille extract ameliorates cadmium-induced impairment in memory and hippocampal neurogenesis in rats

BMC Complementary and Alternative Medicine

Research Article

Dae Young Yoo¹  Yeo Sung Yoon¹  Jong Whi Kim¹  Woosuk Kim¹  Hyo Young Jung¹  In Koo Hwang²  Jung Hoon Choi³  Hee Sun Yim⁴  Dae Won Kim⁴ 

[1] Department of Anatomy and Cell Biology, College of Veterinary Medicine, and Research Institute for Veterinary Science, Seoul National University, 08826, Seoul, South Korea;Department of Anatomy and Cell Biology, College of Veterinary Medicine, and Research Institute for Veterinary Science, Seoul National University, 08826, Seoul, South Korea;Department of Anatomy and Cell Biology, College of Veterinary Medicine, Seoul National University, 08826, Seoul, South Korea;Department of Anatomy, College of Veterinary Medicine, Kangwon National University, 24341, Chuncheon, South Korea;Department of Biochemistry and Molecular Biology, Research Institute of Oral Sciences, College of Dentistry, Kangneung-Wonju National University, 25457, Gangneung, South Korea;

关键词: Dendropanax morbifera;    Cadmium;    Neurogenesis;    Memory;    Acetylcholinesterase;   

DOI  :  10.1186/s12906-016-1435-z

 received in 2016-04-27, accepted in 2016-11-02,  发布年份 2016

来源: Springer

【 摘 要 】

BackgroundCadmium leads to learning and memory impairment. Dendropanax morbifera Léveille stem extract (DMS) reduces cadmium-induced oxidative stress in the hippocampus. We investigated the effects of DMS on cadmium-induced impairments in memory in rats.MethodsCadmium (2 mg/kg), with or without DMS (100 mg/kg), was orally administered to 7-week-old Sprague-Dawley rats for 28 days. Galantamine (5 mg/kg), an acetylcholinesterase inhibitor, was intraperitoneally administered as a positive control. A novel-object recognition test was conducted 2 h after the final administration. Cell proliferation and neuroblast differentiation were assessed by immunohistochemistry for Ki67 and doublecortin, respectively. Acetylcholinesterase activity in the synaptosomes of the hippocampus was also measured based on the formation of 5,5′-dithio-bis-acid nitrobenzoic acid.ResultsAn increase in the preferential exploration time of new objects was observed in both vehicle-treated and cadmium-treated rats. In addition, DMS administration increased cell proliferation and neuroblast differentiation in the dentate gyrus of vehicle-treated and cadmium-treated rats. Acetylcholinesterase activity in the hippocampal synaptosomes was also significantly higher in the DMS-treated group than in the vehicle-treated group. The effect of DMS on cadmium-induced memory impairment and cell proliferation in the hippocampus was comparable to that of galantamine.ConclusionsThese results suggest that DMS ameliorates cadmium-induced memory impairment via increase in cell proliferation, neuroblast differentiation, and acetylcholinesterase activity in the hippocampus. The consumption of DMS may reduce cadmium-induced neurotoxicity in animals or humans.

【 授权许可】

CC BY   
© The Author(s). 2016