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Shen W, Jiang N, Zhou W. What can traditional Chinese medicine do for adult neurogenesis? Front Neurosci 2023; 17:1158228. [PMID: 37123359 PMCID: PMC10130459 DOI: 10.3389/fnins.2023.1158228] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2023] [Accepted: 03/13/2023] [Indexed: 05/02/2023] Open
Abstract
Adult neurogenesis plays a crucial role in cognitive function and mood regulation, while aberrant adult neurogenesis contributes to various neurological and psychiatric diseases. With a better understanding of the significance of adult neurogenesis, the demand for improving adult neurogenesis is increasing. More and more research has shown that traditional Chinese medicine (TCM), including TCM prescriptions (TCMPs), Chinese herbal medicine, and bioactive components, has unique advantages in treating neurological and psychiatric diseases by regulating adult neurogenesis at various stages, including proliferation, differentiation, and maturation. In this review, we summarize the progress of TCM in improving adult neurogenesis and the key possible mechanisms by which TCM may benefit it. Finally, we suggest the possible strategies of TCM to improve adult neurogenesis in the treatment of neuropsychiatric disorders.
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Affiliation(s)
- Wei Shen
- School of Chinese Materia Medica, Tianjin University of Traditional Chinese Medicine, Tianjin, China
- Beijing Institute of Pharmacology and Toxicology, Beijing, China
- State Key Laboratory of Toxicology and Medical Countermeasures, Beijing, China
| | - Ning Jiang
- Beijing Institute of Pharmacology and Toxicology, Beijing, China
- State Key Laboratory of Toxicology and Medical Countermeasures, Beijing, China
- *Correspondence: Ning Jiang, ; Wenxia Zhou,
| | - Wenxia Zhou
- School of Chinese Materia Medica, Tianjin University of Traditional Chinese Medicine, Tianjin, China
- Beijing Institute of Pharmacology and Toxicology, Beijing, China
- State Key Laboratory of Toxicology and Medical Countermeasures, Beijing, China
- *Correspondence: Ning Jiang, ; Wenxia Zhou,
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Cheng CY, Huang HC, Kao ST, Lee YC. Angelica sinensis extract promotes neuronal survival by enhancing p38 MAPK-mediated hippocampal neurogenesis and dendritic growth in the chronic phase of transient global cerebral ischemia in rats. JOURNAL OF ETHNOPHARMACOLOGY 2021; 278:114301. [PMID: 34090910 DOI: 10.1016/j.jep.2021.114301] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/29/2020] [Revised: 05/05/2021] [Accepted: 06/02/2021] [Indexed: 06/12/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Angelica sinensis (Oliv.) Diels (ASD), commonly known as Dang Gui, is a popular Chinese herb that has long been used to treat ischemic stroke. However, the effects of ASD in chronic cerebral ischemia and its underlying mechanisms still remain unclear. AIM OF THE STUDY This study aimed to determine the effects of the ASD extract on hippocampal neuronal survival at 28 d after transient global cerebral ischemia (GCI) and to investigate the precise mechanisms underlying the p38 mitogen-activated protein kinase (MAPK)-related signaling pathway's involvement in hippocampal neurogenesis. MATERIALS AND METHODS Rats underwent 25 min of four-vessel occlusion. The ASD extract was intragastrically administered at doses of 0.25 g/kg (ASD-0.25 g), 0.5 g/kg (ASD-0.5 g), 1 g/kg (ASD-1 g), 1 g/kg after dimethyl sulfoxide administration (D + ASD-1 g), or 1 g/kg after SB203580 (a p38 MAPK inhibitor) administration (SB + ASD-1 g) at 1, 3, 7, 10, 14, 17, 21, and 24 d after transient GCI. RESULTS ASD-0.5 g, ASD-1 g, and D + ASD-1 g treatments had the following effects: upregulation of bromodeoxyuridine (BrdU) and Ki67 expression, and BrdU/neuronal nuclei (NeuN) and Ki67/nestin co-expression in the hippocampal dentate gyrus (DG); upregulation of microtubule-associated protein 2/NeuN co-expression, and NeuN and glial fibrillary acidic protein (GFAP) expression, and downregulation of tumor necrosis factor-α/GFAP co-expression in the hippocampal CA1 region; upregulation of phospho-p38 MAPK (p-p38 MAPK), phospho-cAMP response element-binding protein (p-CREB), brain-derived neurotrophic factor (BDNF), glial cell line-derived neurotrophic factor (GDNF), and vascular endothelial growth factor A (VEGF-A) expression in the hippocampus. SB + ASD-1 g treatment abrogated the effects of ASD-1 g on the expression of these proteins. CONCLUSIONS ASD-0.5 g and ASD-1 g treatments promotes neuronal survival by enhancing hippocampal neurogenesis. The effects of the ASD extract on astrocyte-associated hippocampal neurogenesis and dendritic growth are caused by the activation of p38 MAPK-mediated CREB/BDNF, GDNF, and VEGF-A signaling pathways in the hippocampus at 28 d after transient GCI.
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Affiliation(s)
- Chin-Yi Cheng
- School of Post-baccalaureate Chinese Medicine, College of Chinese Medicine, China Medical University, Taichung, 40402, Taiwan; Department of Chinese Medicine, Hui-Sheng Hospital, Taichung, 42056, Taiwan.
| | - Hui-Chi Huang
- Department of Chinese Pharmaceutical Sciences and Chinese Medicine Resources, College of Chinese Medicine, China Medical University, Taichung, 40402, Taiwan.
| | - Shung-Te Kao
- School of Chinese Medicine, College of Chinese Medicine, China Medical University, Taichung, 40402, Taiwan.
| | - Yu-Chen Lee
- Department of Chinese Medicine, China Medical University Hospital, Taichung, 42056, Taiwan; Research Center for Chinese Medicine & Acupuncture, China Medical University, Taichung, 40402, Taiwan; Graduate Institute of Acupuncture Science, China Medical University, Taichung, 40402, Taiwan.
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Luo Y, Chen H, Tsoi B, Wang Q, Shen J. Danggui-Shaoyao-San (DSS) Ameliorates Cerebral Ischemia-Reperfusion Injury via Activating SIRT1 Signaling and Inhibiting NADPH Oxidases. Front Pharmacol 2021; 12:653795. [PMID: 33935765 PMCID: PMC8082392 DOI: 10.3389/fphar.2021.653795] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2021] [Accepted: 03/22/2021] [Indexed: 12/18/2022] Open
Abstract
Danggui-Shayao-San (DSS) is a famous Traditional Chinese Medicine formula that used for treating pain disorders and maintaining neurological health. Recent studies indicate that DSS has neuroprotective effects against ischemic brain damage but its underlining mechanisms remain unclear. Herein, we investigated the neuroprotective mechanisms of DSS for treating ischemic stroke. Adult male Sprague-Dawley (S.D.) rats were subjected to 2 h of middle cerebral artery occlusion (MCAO) plus 22 h of reperfusion. Both ethanol extract and aqueous extract of DSS (12 g/kg) were orally administrated into the rats at 30 min prior to MCAO ischemic onset. We found that 1) ethanol extract of DSS, instead of aqueous extract, reduced infarct sizes and improved neurological deficit scores in the post-ischemic stroke rats; 2) Ethanol extract of DSS down-regulated the expression of the cleaved-caspase 3 and Bax, up-regulated bcl-2 and attenuated apoptotic cell death in the ischemic brains; 3) Ethanol extract of DSS decreased the production of superoxide and peroxynitrite; 4) Ethanol extract of DSS significantly down-regulated the expression of p67phox but has no effect on p47phox and iNOS statistically. 5) Ethanol extract of DSS significantly up-regulated the expression of SIRT1 in the cortex and striatum of the post-ischemic brains; 6) Co-treatment of EX527, a SIRT1 inhibitor, abolished the DSS’s neuroprotective effects. Taken together, DSS could attenuate oxidative/nitrosative stress and inhibit neuronal apoptosis against cerebral ischemic-reperfusion injury via SIRT1-dependent manner.
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Affiliation(s)
- Yunxia Luo
- Science and Technology Innovation Center, Guangzhou University of Chinese Medicine, Guangzhou, China.,School of Chinese Medicine, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, China.,Department of Endocrinology, Fourth Clinical Medical College, Guangzhou University of Chinese Medicine, Shenzhen, China.,Institute of Clinical Pharmacology, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Hansen Chen
- School of Chinese Medicine, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, China
| | - Bun Tsoi
- School of Chinese Medicine, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, China
| | - Qi Wang
- Science and Technology Innovation Center, Guangzhou University of Chinese Medicine, Guangzhou, China.,Institute of Clinical Pharmacology, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Jiangang Shen
- Science and Technology Innovation Center, Guangzhou University of Chinese Medicine, Guangzhou, China.,School of Chinese Medicine, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, China
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4
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Xu D, Li F, Xue G, Hou K, Fang W, Li Y. Effect of Wnt signaling pathway on neurogenesis after cerebral ischemia and its therapeutic potential. Brain Res Bull 2020; 164:1-13. [PMID: 32763283 DOI: 10.1016/j.brainresbull.2020.07.005] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2018] [Revised: 12/08/2019] [Accepted: 07/08/2020] [Indexed: 02/07/2023]
Abstract
Neurogenesis process in the chronic phase of ischemic stroke has become the focus of research on stroke treatment recently, mainly through the activation of related pathways to increase the differentiation of neural stem cells (NSCs) in the brain sub-ventricular zone (SVZ) and subgranular zone (SGZ) of hippocampal dentate gyrus (DG) areas into neurons, promoting neurogenesis. While there is still debate about the longevity of active adult neurogenesis in humans, the SVZ and SGZ have the capacity to upregulate neurogenesis in response to cerebral ischemia, which opens discussion about potential treatment strategies to harness this neuronal regenerative response. Wnt signaling pathway is one of the most important approaches potentially targeting on neurogenesis after cerebral ischemia, appropriate activation of which in NSCs may help to improve the sequelae of cerebral ischemia. Various therapeutic approaches are explored on preclinical stage to target endogenous neurogenesis induced by Wnt signaling after stroke onset. This article describes the composition of Wnt signaling pathway and the process of neurogenesis after cerebral ischemia, and emphatically introduces the recent studies on the mechanisms of this pathway for post-stroke neurogenesis and the therapeutic possibility of activating the pathway to improve neurogenesis after stroke.
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Affiliation(s)
- Dan Xu
- State Key Laboratory of Natural Medicines, Department of Physiology, China Pharmaceutical University, Nanjing 210009, China.
| | - Fengyang Li
- State Key Laboratory of Natural Medicines, Department of Physiology, China Pharmaceutical University, Nanjing 210009, China.
| | - Gou Xue
- State Key Laboratory of Natural Medicines, Department of Physiology, China Pharmaceutical University, Nanjing 210009, China.
| | - Kai Hou
- State Key Laboratory of Natural Medicines, Department of Physiology, China Pharmaceutical University, Nanjing 210009, China.
| | - Weirong Fang
- State Key Laboratory of Natural Medicines, Department of Physiology, China Pharmaceutical University, Nanjing 210009, China.
| | - Yunman Li
- State Key Laboratory of Natural Medicines, Department of Physiology, China Pharmaceutical University, Nanjing 210009, China.
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Network meta-analysis: Aspirin plus traditional Chinese medicine for stroke prevention in patients with atrial fibrillation. J Herb Med 2020. [DOI: 10.1016/j.hermed.2020.100355] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Choi BR, Seo JH, Back DB, Han JS, Choi DH, Kwon KJ, Shin CY, Lee J, Kim HY. Effect of amyloid toxicity or chronic cerebral hypoperfusion on brain insulin resistance in a rat model with intracerebroventricular streptozotocin. Brain Res Bull 2020; 158:40-50. [PMID: 32114000 DOI: 10.1016/j.brainresbull.2020.02.012] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2019] [Revised: 02/10/2020] [Accepted: 02/25/2020] [Indexed: 12/26/2022]
Abstract
Sporadic Alzheimer's disease (AD) is a multifactorial neurodegenerative disorder affected by amyloid and vascular pathogenesis. Brain insulin resistance (BIR) has been suggested as one of the pathomechanisms of sporadic AD. We investigated how the amyloid and vascular pathogenesis of AD interacts with BIR. We examined experimental groups mimicking amyloid pathogenesis following intracerebroventriculr (icv) injection of amyloid β or vascular pathogenesis following permanent ligation of the bilateral common carotid arteries in Wistar rats that had undergone icv injection of streptozotocin. Behavioral tests and pathologic studies were performed. Cognitive impairments were induced by BIR superimposed by amyloid or vascular pathogenesis. Neuroinflammation in the white matter and hippocampus was aggravated by an interaction between BIR and vascular pathogenesis. Amyloid-associated pathology in the white matter was enhanced by BIR and vascular pathogenesis. Tau-associated pathology in the hippocampus was altered by BIR in a relation with amyloid or vascular pathogenesis. Our study may provide useful experimental insights based on an integrated approach to the influence of amyloid and vascular pathogenesis on BIR, permitting better understanding of the heterogeneous pathogenesis of sporadic AD. Pathologic responses in sporadic AD may differ depending on amyloid and vascular pathogenesis and may sometimes be synergistically aggravated when combined with BIR.
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Affiliation(s)
- Bo-Ryoung Choi
- Department of Neurology, Center for Geriatric Neuroscience Research, Institute of Biomedical Science and Technology, Research Institute of Medical Science, Konkuk University School of Medicine, Seoul, Republic of Korea; Department of Biological Sciences, Center for Geriatric Neuroscience Research, Institute of Biomedical Science and Technology, Research Institute of Medical Science, Konkuk University School of Medicine, Seoul, Republic of Korea
| | - Ju-Ha Seo
- Department of Neurology, Center for Geriatric Neuroscience Research, Institute of Biomedical Science and Technology, Research Institute of Medical Science, Konkuk University School of Medicine, Seoul, Republic of Korea
| | - Dong Bin Back
- Department of Neurology, Center for Geriatric Neuroscience Research, Institute of Biomedical Science and Technology, Research Institute of Medical Science, Konkuk University School of Medicine, Seoul, Republic of Korea
| | - Jung-Soo Han
- Department of Biological Sciences, Center for Geriatric Neuroscience Research, Institute of Biomedical Science and Technology, Research Institute of Medical Science, Konkuk University School of Medicine, Seoul, Republic of Korea
| | - Dong-Hee Choi
- Department of Medicine, Center for Geriatric Neuroscience Research, Institute of Biomedical Science and Technology, Research Institute of Medical Science, Konkuk University School of Medicine, Seoul, Republic of Korea
| | - Kyoung Ja Kwon
- Department of Neurology, Center for Geriatric Neuroscience Research, Institute of Biomedical Science and Technology, Research Institute of Medical Science, Konkuk University School of Medicine, Seoul, Republic of Korea; Department of Medicine, Center for Geriatric Neuroscience Research, Institute of Biomedical Science and Technology, Research Institute of Medical Science, Konkuk University School of Medicine, Seoul, Republic of Korea
| | - Chan Young Shin
- Department of Pharmacology, Center for Geriatric Neuroscience Research, Institute of Biomedical Science and Technology, Research Institute of Medical Science, Konkuk University School of Medicine, Seoul, Republic of Korea
| | - Jongmin Lee
- Department of Rehabilitation Medicine, Center for Geriatric Neuroscience Research, Institute of Biomedical Science and Technology, Research Institute of Medical Science, Konkuk University School of Medicine, Seoul, Republic of Korea
| | - Hahn Young Kim
- Department of Neurology, Center for Geriatric Neuroscience Research, Institute of Biomedical Science and Technology, Research Institute of Medical Science, Konkuk University School of Medicine, Seoul, Republic of Korea.
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Hwang DS, Kim N, Choi JG, Kim HG, Kim H, Oh MS. Dangguijakyak-san ameliorates memory deficits in ovariectomized mice by upregulating hippocampal estrogen synthesis. Altern Ther Health Med 2017; 17:501. [PMID: 29178947 PMCID: PMC5702078 DOI: 10.1186/s12906-017-2015-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2017] [Accepted: 11/17/2017] [Indexed: 01/20/2023]
Abstract
Background Dangguijakyak-san (DJS) is an herbal formulation that has been clinically applicable for treating postmenopausal symptoms and neurological disorders. It is reported that hippocampal estrogen attenuates memory impairment via neuroprotection and synaptogenesis. However, the effect of DJS on hippocampal estrogen synthesis remains unknown. In this study, we explored the effect of DJS and its neuroprotective mechanism against memory impairment in ovariectomized (OVX) mice, with respect to hippocampal estrogen stimulation. Methods Cell cultures were prepared from the hippocampi of 18-day-old embryos from timed pregnant Sprague–Dawley rats. The hippocampi were dissected, collected, dissociated, and plated in 60-mm dishes. The cells were treated with DJS for 48 h and the supernatant was collected to determine estrogen levels. Female ICR mice (8-weeks-old) were housed for 1 week and ovariectomy was performed to remove the influence of ovary-synthesized estrogens. Following a 2-week post-surgical recovery period, the mice were administrated with DJS (50 and 100 mg/kg/day, p.o.) or 17β-estradiol (200 μg/kg/day, i.p.) once daily for 21 days. Hippocampal and serum estrogen levels were determined using enzyme-linked immunosorbent assay kit. Memory behavioral tests, western blot, and immunohistochemical analyses were performed to evaluate the neuroprotective effects of DJS in this model. Results DJS treatment promoted estrogen synthesis in primary hippocampal cells and the hippocampus of OVX mice, resulting in the amelioration of OVX-induced memory impairment. Hippocampal estrogen stimulated by DJS treatment contributed to the activation of cAMP response element-binding protein and synaptic protein in OVX mice. Conclusion DJS may attenuate memory deficits in postmenopausal women via hippocampal estrogen synthesis. Electronic supplementary material The online version of this article (10.1186/s12906-017-2015-6) contains supplementary material, which is available to authorized users.
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Wang Z, Tang Z, Zhu W, Ge L, Ge J. Efficacy and safety of traditional Chinese medicine on thromboembolic events in patients with atrial fibrillation: A systematic review and meta-analysis. Complement Ther Med 2017; 32:1-10. [DOI: 10.1016/j.ctim.2017.03.006] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2016] [Revised: 03/07/2017] [Accepted: 03/15/2017] [Indexed: 01/06/2023] Open
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Gomazkov OA. Correction of neurogenesis in the adult brain: Selection of therapeutic targets. NEUROCHEM J+ 2017. [DOI: 10.1134/s181971241604005x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Kim SH, Chung DK, Lee YJ, Song CH, Ku SK. Neuroprotective effects of Danggui-Jakyak-San on rat stroke model through antioxidant/antiapoptotic pathway. JOURNAL OF ETHNOPHARMACOLOGY 2016; 188:123-133. [PMID: 27163672 DOI: 10.1016/j.jep.2016.04.060] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/22/2015] [Revised: 04/09/2016] [Accepted: 04/28/2016] [Indexed: 06/05/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Dangui-Jakyak-San (DJ) is a traditional Korean medicinal polyherb, prescribed typically in patients with insufficient blood supply in Eastern Asia. The DJ also has been reported to have neuroprotective effects in vitro and in vivo studies. AIM OF STUDY The therapeutic potential of DJ was examined in stroke rat model, in comparison with donepezil, a reversible acetylcholinesterase inhibitor. MATERIALS AND METHODS Ischemic stroke rat model was induced by surgery of permanent occlusion of middle cerebral artery (pMCAO). The model was orally administered with distilled water (pMCAO control), donepezil at 10mg/kg (Donepezil) and DJ at 200, 100 and 50mg/kg (DJ 200, DJ 100 and DJ 50, respectively). Sham had the same surgery excepting for the pMCAO, and it was administered with distilled water (sham control). RESULTS After the administration for 28 days, the groups of DJ exhibited dose-dependent reduction in infarct/defect volumes with improvement in sensorimotor and cognitive motor function, comparing to pMCAO control. The DJ treatments seemed to enhance antiapoptotic and antioxidant effects; increases in antiapoptotic expressions (STAT3 and Pim-1) and decreases in lipid peroxidation (MDA) together with increases in contents of endogenous antioxidant (GSH) and activities of antioxidant enzymes (catalase and SOD). The histopathological analyses revealed significant reduction in neuronal apoptosis (caspase-3 and PARP) and neuronal degradation with atrophy and degeneration, in the DJ treatments. Furthermore, the oxidative stresses (nitrotyrosine as an iNOS factor and 4-HNE as a marker of lipid peroxidation) were observed mild. Although the similar neuroprotective effects were observed, the body weight loss was scarcely alleviated in Donepezil comparing to pMCAO control. CONCLUSION These suggest that DJ ameliorate the neurological dysfunction of cerebral ischemia through augmentation of antioxidant defense system and up-regulation of STAT3 and Pim-1.
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Affiliation(s)
- Sang-Ho Kim
- Department of Oriental Neuropsychiatry, College of Korean Medicine, Daegu Haany University, Gyeongsan 38610, Republic of Korea
| | - Dae-Kyoo Chung
- Department of Oriental Neuropsychiatry, College of Korean Medicine, Daegu Haany University, Gyeongsan 38610, Republic of Korea
| | - Young Joon Lee
- Department of Preventive Medicine, College of Korean Medicine, Daegu Haany University, Gyeongsan 38610, Republic of Korea
| | - Chang-Hyun Song
- Department of Anatomy and Histology, College of Korean Medicine, Daegu Haany University, Gyeongsan 38610, Republic of Korea.
| | - Sae-Kwang Ku
- Department of Anatomy and Histology, College of Korean Medicine, Daegu Haany University, Gyeongsan 38610, Republic of Korea.
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Yi JH, Beak SJ, Lee S, Jung JW, Kim BC, Ryu JH, Kim DH. Danggui-Jakyak-San enhances hippocampal long-term potentiation through the ERK/CREB/BDNF cascade. JOURNAL OF ETHNOPHARMACOLOGY 2015; 175:481-489. [PMID: 26453932 DOI: 10.1016/j.jep.2015.10.012] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/24/2014] [Revised: 07/14/2015] [Accepted: 10/04/2015] [Indexed: 06/05/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Danggui-Jakyak-San (DJS), a traditional herbal prescription, has long been used to treat gerontological disorders due to insufficient blood supply. AIM OF THE STUDY Previously, we reported that DJS increased hippocampal neurogenesis and enhanced learning and memory. However, the precise mechanism of DJS and its effects on learning and memory are still not well understood. In this study, we investigated the effect of DJS on hippocampal long-term potentiation (LTP), a cellular mechanism thought to underlie learning and memory. MATERIALS AND METHODS To understand the effect of DJS on LTP, we used acute mouse hippocampal slices and delivered one train of high frequency stimulation (100 Hz, 100 pulses). Western blots were used to analyze the changes in protein levels induced by DJS. Morris water maze test was used to evaluate the effect of DJS on spatial long-term memory. RESULTS DJS enhanced LTP in the Schaffer-collateral pathway of the hippocampus in a concentration-dependent manner. Extracellular signal-regulated kinase 1/2 (ERK1/2) and cAMP response element-binding protein (CREB) were activated by DJS. Moreover, brain-derived neurotropic factor (BDNF) was also increased by DJS. Blockade of ERK1/2 activation with PD198306 blocked the DJS-induced activation of the ERK1/2/CREB/BDNF cascade and LTP enhancement. In vivo, DJS improved spatial long-term memory and upregulated the hippocampal CREB/BDNF cascade. CONCLUSION These results suggest that DJS enhances hippocampal LTP and spatial memory through the ERK/CREB/BDNF cascade.
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Affiliation(s)
- Jee Hyun Yi
- School of Clinical Sciences, Faculty of Medicine and Dentistry, University of Bristol, Bristol, UK
| | - Soo Ji Beak
- Chonnam-Bristol Frontier Laboratory, Biomedical Research Institute, Chonnam National University Hospital, Jebong-ro, Gwangju 501-757, Republic of Korea
| | - Seungheon Lee
- Department of Aquatic Biomedical Sciences, School of Marine Biomedical Science, College of Ocean Science, Jeju National University, Jeju 690-756, Republic of Korea
| | - Ji Wook Jung
- Department of Herbal Medicinal Pharmacology, College of Herbal Bio-industry, Daegu Haany University, Kyungsan, Republic of Korea
| | - Byeong C Kim
- Chonnam-Bristol Frontier Laboratory, Biomedical Research Institute, Chonnam National University Hospital, Jebong-ro, Gwangju 501-757, Republic of Korea
| | - Jong Hoon Ryu
- Department of Life and Nanopharmaceutical Sciences and,College of Pharmacy, Kyung Hee University, Seoul, Republic of Korea; Department of Oriental Pharmaceutical Science, College of Pharmacy, Kyung Hee University, Seoul, Republic of Korea.
| | - Dong Hyun Kim
- Department of Medicinal Biotechnology, College of Natural Resources and Life Science, Dong-A University, Busan, Republic of Korea.
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Kim DH, Moon EY, Yi JH, Lee HE, Park SJ, Ryu YK, Kim HC, Lee S, Ryu JH. Peptide fragment of thymosin β4 increases hippocampal neurogenesis and facilitates spatial memory. Neuroscience 2015; 310:51-62. [PMID: 26363149 DOI: 10.1016/j.neuroscience.2015.09.017] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2015] [Revised: 09/01/2015] [Accepted: 09/01/2015] [Indexed: 12/16/2022]
Abstract
Although several studies have suggested the neuroprotective effect of thymosin β4 (TB4), a major actin-sequestering protein, on the central nervous system, little is understood regarding the action of N-acetyl-serylaspartyl-lysyl-proline (Ac-SDKP), a peptide fragment of TB4 on brain function. Here, we examined neurogenesis-stimulative effect of Ac-SDKP. Intrahippocampal infusion of Ac-SDKP facilitated the generation of new neurons in the hippocampus. Ac-SDKP-treated mouse hippocampus showed an increase in β-catenin stability with reduction of glycogen synthase kinase-3β (GSK-3β) activity. Moreover, inhibition of vascular endothelial growth factor (VEGF) signaling blocked Ac-SDKP-facilitated neural proliferation. Subchronic intrahippocampal infusion of Ac-SDKP also increased spatial memory. Taken together, these data demonstrate that Ac-SDKP functions as a regulator of neural proliferation and indicate that Ac-SDKP may be a therapeutic candidate for diseases characterized by neuronal loss.
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Affiliation(s)
- D H Kim
- Department of Medicinal Biotechnology, College of Natural Resources and Life Science, Dong-A University, Busan 604-714, Republic of Korea; Dong-A Anti-Aging Research Center, Dong-A University, Busan 604-714, Republic of Korea
| | - E-Y Moon
- Department of Bioscience and Biotechnology, Sejong University, Seoul 143-747, Republic of Korea.
| | - J H Yi
- School of Clinical Sciences, Faculty of Medicine and Dentistry, University of Bristol, Bristol, UK
| | - H E Lee
- Department of Life and Nanopharmaceutical Sciences, College of Pharmacy, Kyung Hee University, Seoul 130-701, Republic of Korea; Kyung Hee East-West Pharmaceutical Research Institute, College of Pharmacy, Kyung Hee University, Seoul 130-701, Republic of Korea
| | - S J Park
- Department of Life and Nanopharmaceutical Sciences, College of Pharmacy, Kyung Hee University, Seoul 130-701, Republic of Korea; Kyung Hee East-West Pharmaceutical Research Institute, College of Pharmacy, Kyung Hee University, Seoul 130-701, Republic of Korea
| | - Y-K Ryu
- Department of Bioscience and Biotechnology, Sejong University, Seoul 143-747, Republic of Korea
| | - H-C Kim
- Biomedical Mouse Resource Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Taejeon 305-806, Republic of Korea
| | - S Lee
- Faculty of Marine Biomedical Science, Cheju National University, Jeju 690-756, Republic of Korea
| | - J H Ryu
- Department of Life and Nanopharmaceutical Sciences, College of Pharmacy, Kyung Hee University, Seoul 130-701, Republic of Korea; Department of Oriental Pharmaceutical Science, College of Pharmacy, Kyung Hee University, Seoul 130-701, Republic of Korea; Kyung Hee East-West Pharmaceutical Research Institute, College of Pharmacy, Kyung Hee University, Seoul 130-701, Republic of Korea.
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Kim D, Lee H, Kwon K, Park S, Heo H, Lee Y, Choi J, Shin C, Ryu J. Early immature neuronal death initiates cerebral ischemia-induced neurogenesis in the dentate gyrus. Neuroscience 2015; 284:42-54. [DOI: 10.1016/j.neuroscience.2014.09.074] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2014] [Revised: 09/16/2014] [Accepted: 09/16/2014] [Indexed: 02/03/2023]
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