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http://dx.doi.org/10.14374/HFS.2017.25.4.471

Effects and molecular mechanisms of Noemyeong-san, a novel herbal prescription for treating Alzheimer's disease on microglia  

Han, Sangtae ((Brain) Donguibogam Korean Medicine)
Jeong, Ji-Cheon (Department of Korean Internal Medicine, College of Korean Medicine, Dongguk University)
Publication Information
Herbal Formula Science / v.25, no.4, 2017 , pp. 471-481 More about this Journal
Abstract
Objectives : Noemyeong-san (NMS) is a novel herbal prescription composed of five oriental medicinal herbs including Prunellae Spica, Betulae Cortex, Foeniculi Fructus, Asiasari Radix, and Clematidis Radix for treating Alzheimer's disease. In the present study, we investigated the effects and molecular mechanisms of NMS on BV2 microglia to evaluate the potential action of this formula for preventing or treating neurodegenerative disease such as Alzheimer's disease. Methods : To determine the cytotoxicity of NMS on BV2 microglia, the MTT assay was performed. The effects of NMS on lipopolysaccharide (LPS)-stimulated BV2 microglia were determined with a nitric oxide (NO) assay and western blots for inflammatory mediator-related proteins, mitogen activated protein kinases (MAPKs), nuclear factor kappa B (NF-${\kappa}B$) pathway-related proteins, and heme oxygenase-1 (HO-1). Result : NMS inhibited induction of iNOS and COX-2 as well as NO production without affecting the cell viability in LPS-stimulated BV2 microglia. NMS also suppressed activation of ERK and p38 MAPK among main kinases of MAPKs as well as NF-${\kappa}B$ by LPS stimulation. Furthermore, NMS dose-dependently induced the expression of HO-1 and the inhibitory effect of NMS on the production of NO were blocked by pretreatment with an HO-1 inhibitor, Snpp. Conclusions : These results demonstrate that NMS has potent anti-neuroinflammatory effect on the LPS-stimulated microglia. These findings provide evidences for NMS to be considered as a new prescription for preventing or treating neurodegenerative disease such as Alzheimer's disease.
Keywords
Noemyeong-san; Neurodegenerative disease; Microglia; Neuroinflammation; heme oxygenase-1;
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Times Cited By KSCI : 3  (Citation Analysis)
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