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Yan QQ, Liu TL, Liu LL, Wei YS, Zhao YD, Yu C, Zhong ZG, Huang JL, Wu DP. Mitochondrial Treatment Improves Cognitive Impairment Induced by Lipopolysaccharide in Mice. Mol Neurobiol 2024:10.1007/s12035-024-04368-1. [PMID: 39037529 DOI: 10.1007/s12035-024-04368-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2023] [Accepted: 07/15/2024] [Indexed: 07/23/2024]
Abstract
Neuroinflammation has been proven to drive cognitive impairment associated with neurodegenerative diseases. It has been demonstrated that mitochondrial dysfunction is associated with cognitive impairment caused by neuroinflammation. We hypothesized that the transfer of exogenous mitochondria may be beneficial to the therapy of cognitive impairment induced by neuroinflammation. In the study, the effect of exogenous mitochondria on cognitive impairment induced by neuroinflammation was investigated. The results showed that mitochondrial treatment ameliorated the cognitive performance of lipopolysaccharide (LPS)-treated mice. Additionally, mitochondrial therapy attenuated neuronal injury and down-regulated the expression of proinflammatory cytokines, including TNF-α and pro- and cleaved IL-1β, and the expression of Iba-1 and GFAP in the hippocampus and cortex of LPS-treated mice. Additionally, mitochondrial treatment increased mitochondrial ΔΨm, ATP level, and SOD activity and attenuated MDA level and ROS production in the brains of LPS-treated mice. The study reports the beneficial effect of mitochondrial treatment against cognitive impairment of LPS-treated mice, thereby providing a potential strategy for the treatment of cognitive impairment caused by neuroinflammation.
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Affiliation(s)
- Qiu-Qing Yan
- Jiangsu Key Laboratory of New Drug Research and Clinical Pharmacy, Pharmacy School, Xuzhou Medical University, Xuzhou, 221004, Jiangsu, China
| | - Tian-Long Liu
- Jiangsu Key Laboratory of New Drug Research and Clinical Pharmacy, Pharmacy School, Xuzhou Medical University, Xuzhou, 221004, Jiangsu, China
| | - Ling-Ling Liu
- Jiangsu Key Laboratory of New Drug Research and Clinical Pharmacy, Pharmacy School, Xuzhou Medical University, Xuzhou, 221004, Jiangsu, China
| | - Yan-Su Wei
- Jiangsu Key Laboratory of New Drug Research and Clinical Pharmacy, Pharmacy School, Xuzhou Medical University, Xuzhou, 221004, Jiangsu, China
| | - Yuan-Dan Zhao
- Jiangsu Key Laboratory of New Drug Research and Clinical Pharmacy, Pharmacy School, Xuzhou Medical University, Xuzhou, 221004, Jiangsu, China
| | - Chao Yu
- School of Basic Medicine, Xuzhou Medical University, Xuzhou, 221004, Jiangsu, China
| | - Zhen-Guo Zhong
- Scientific Research Center of Traditional Chinese Medicine, Guangxi University of Chinese Medicine, Nanning, 530200, Guangxi, China
| | - Jin-Lan Huang
- Jiangsu Key Laboratory of New Drug Research and Clinical Pharmacy, Pharmacy School, Xuzhou Medical University, Xuzhou, 221004, Jiangsu, China.
- Xuzhou Ruihu Health Management Consulting Co., Ltd, Xuzhou, 221002, Jiangsu, China.
| | - Deng-Pan Wu
- Jiangsu Key Laboratory of New Drug Research and Clinical Pharmacy, Pharmacy School, Xuzhou Medical University, Xuzhou, 221004, Jiangsu, China.
- Xuzhou Ruihu Health Management Consulting Co., Ltd, Xuzhou, 221002, Jiangsu, China.
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Kumar Nelson V, Jha NK, Nuli MV, Gupta S, Kanna S, Gahtani RM, Hani U, Singh AK, Abomughaid MM, Abomughayedh AM, Almutary AG, Iqbal D, Al Othaim A, Begum SS, Ahmad F, Mishra PC, Jha SK, Ojha S. Unveiling the impact of aging on BBB and Alzheimer's disease: Factors and therapeutic implications. Ageing Res Rev 2024; 98:102224. [PMID: 38346505 DOI: 10.1016/j.arr.2024.102224] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2023] [Revised: 02/01/2024] [Accepted: 02/03/2024] [Indexed: 05/12/2024]
Abstract
Alzheimer's disease (AD) is a highly prevalent neurodegenerative condition that has devastating effects on individuals, often resulting in dementia. AD is primarily defined by the presence of extracellular plaques containing insoluble β-amyloid peptide (Aβ) and neurofibrillary tangles (NFTs) composed of hyperphosphorylated tau protein (P-tau). In addition, individuals afflicted by these age-related illnesses experience a diminished state of health, which places significant financial strain on their loved ones. Several risk factors play a significant role in the development of AD. These factors include genetics, diet, smoking, certain diseases (such as cerebrovascular diseases, obesity, hypertension, and dyslipidemia), age, and alcohol consumption. Age-related factors are key contributors to the development of vascular-based neurodegenerative diseases such as AD. In general, the process of aging can lead to changes in the immune system's responses and can also initiate inflammation in the brain. The chronic inflammation and the inflammatory mediators found in the brain play a crucial role in the dysfunction of the blood-brain barrier (BBB). Furthermore, maintaining BBB integrity is of utmost importance in preventing a wide range of neurological disorders. Therefore, in this review, we discussed the role of age and its related factors in the breakdown of the blood-brain barrier and the development of AD. We also discussed the importance of different compounds, such as those with anti-aging properties, and other compounds that can help maintain the integrity of the blood-brain barrier in the prevention of AD. This review builds a strong correlation between age-related factors, degradation of the BBB, and its impact on AD.
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Affiliation(s)
- Vinod Kumar Nelson
- Raghavendra Institute of Pharmaceutical Education and Research, Anantapur, India.
| | - Niraj Kumar Jha
- Centre for Global Health Research, Saveetha Medical College, Saveetha Institute of Medical and Technical Sciences, Saveetha University, Chennai, India; Centre of Research Impact and Outcome, Chitkara University, Rajpura 140401, Punjab, India; School of Bioengineering & Biosciences, Lovely Professional University, Phagwara 144411, India; Department of Biotechnology Engineering and Food Technology, Chandigarh University, Mohali, India.
| | - Mohana Vamsi Nuli
- Raghavendra Institute of Pharmaceutical Education and Research, Anantapur, India
| | - Saurabh Gupta
- Department of Biotechnology, GLA University, Mathura, Uttar Pradesh, India
| | - Sandeep Kanna
- Department of pharmaceutics, Chalapathi Institute of Pharmaceutical Sciences, Chalapathi Nagar, Guntur 522034, India
| | - Reem M Gahtani
- Departement of Clinical Laboratory Sciences, King Khalid University, Abha, Saudi Arabia
| | - Umme Hani
- Department of pharmaceutics, College of Pharmacy, King Khalid University, Abha, Saudi Arabia
| | - Arun Kumar Singh
- Department of Pharmaceutical Engineering and Technology, Indian Institute of Technology BHU, Varanasi, Uttar Pradesh, India
| | - Mosleh Mohammad Abomughaid
- Department of Medical Laboratory Sciences, College of Applied Medical Sciences, University of Bisha, Bisha 61922, Saudi Arabia
| | - Ali M Abomughayedh
- Pharmacy Department, Aseer Central Hospital, Ministry of Health, Saudi Arabia
| | - Abdulmajeed G Almutary
- Department of Biomedical Sciences, College of Health Sciences, Abu Dhabi University, Abu Dhabi, P.O. Box 59911, United Arab Emirates
| | - Danish Iqbal
- Department of Health Information Management, College of Applied Medical Sciences, Buraydah Private Colleges, Buraydah 51418, Saudi Arabia
| | - Ayoub Al Othaim
- Department of Medical Laboratory Sciences, College of Applied Medical Science, Majmaah University, Al-Majmaah 11952, Saudi Arabia.
| | - S Sabarunisha Begum
- Department of Biotechnology, P.S.R. Engineering College, Sivakasi 626140, India
| | - Fuzail Ahmad
- Respiratory Care Department, College of Applied Sciences, Almaarefa University, Diriya, Riyadh, 13713, Saudi Arabia
| | - Prabhu Chandra Mishra
- Department of Biotechnology, School of Engineering and Technology, Sharda University, Greater Noida, India
| | - Saurabh Kumar Jha
- Department of Zoology, Kalindi College, University of Delhi, 110008, India.
| | - Shreesh Ojha
- Department of Pharmacology and Therapeutics, College of Medicine and Health Sciences, United Arab Emirates University, Al Ain, P.O. Box 15551, United Arab Emirates
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Wang J, Shi L, Wang C, Yao LH, Li G, Wang S. Astragaloside depresses compound action potential in sciatic nerve of frogs involved in L-type Ca 2+-channel dependent mechanism. Nat Prod Res 2024:1-10. [PMID: 38824425 DOI: 10.1080/14786419.2024.2353388] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2023] [Accepted: 05/06/2024] [Indexed: 06/03/2024]
Abstract
The sciatic nerve is the largest sensorimotor nerve within the peripheral nervous system (PNS), possessing the ability to produce endogenous neurotrophins. Compound nerve action potentials (CNAPs) are regarded as a physiological/pathological indicator to identify nerve activity in signal transduction of the PNS. Astragaloside (AST), a small-molecule saponin purified from Astragalus membranaceus, is widely used to treat chronic disease. Nonetheless, the regulatory effects of AST on the sciatic nerve remain unknown. Therefore, the present investigation was undertaken to study the effect of AST on CNAPs of frog sciatic nerves. Here, AST depressed the conduction velocity and amplitude of CNAPs. Importantly, the AST-induced responses could be blocked by a Ca2+-free medium, or by applying all Ca2+ channel antagonists (CdCl2/LaCl3) or L-type Ca2+ channel blockers (nifedipine/diltiazem), but not the T-type and P-type Ca2+ channel antagonist (NiCl2). Altogether, these findings suggested that AST may attenuate the CNAPs of frog sciatic nerves in vitro via the L-type Ca2+-channel dependent mechanisms.
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Affiliation(s)
- Jinxiu Wang
- School of Life Science, Jiangxi Science & Technology Normal University, Nanchang, Jiangxi, PR China
| | - Lulu Shi
- School of Sport Science, Jiangxi Science & Technology Normal University, Nanchang, Jiangxi, PR China
| | - Chuchu Wang
- School of Life Science, Jiangxi Science & Technology Normal University, Nanchang, Jiangxi, PR China
| | - Li-Hua Yao
- School of Life Science, Jiangxi Science & Technology Normal University, Nanchang, Jiangxi, PR China
| | - Guoyin Li
- School of Sport Science, Jiangxi Science & Technology Normal University, Nanchang, Jiangxi, PR China
| | - Songhua Wang
- Jiangxi Key Laboratory of Organic Chemistry, Jiangxi Science & Technology Normal University, Nanchang, Jiangxi, PR China
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Zarezade V, Nazeri Z, Azizidoost S, Cheraghzadeh M, Babaahmadi-Rezaei H, Kheirollah A. Paradoxical effect of Aβ on protein levels of ABCA1 in astrocytes, microglia, and neurons isolated from C57BL/6 mice: an in vitro and in silico study to elucidate the effect of Aβ on ABCA1 in the brain cells. J Biomol Struct Dyn 2024; 42:274-287. [PMID: 37105231 DOI: 10.1080/07391102.2023.2201835] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2022] [Accepted: 03/10/2023] [Indexed: 04/29/2023]
Abstract
Impaired cholesterol metabolism has been reported in Alzheimer's disease. Since ABCA1 is one of the main players in the brain's cholesterol homeostasis, here we used the in-vitro and in-silico experiments to investigate the effect of Aβ on ABCA1 protein levels in microglia, astrocytes, and neurons in mice. Microglia, astrocytes, and neurons were cultured and exposed to beta amyloid. ABCA1 in cell lysates was determined by Western blotting, and cholesterol efflux was measured in the conditioned media. Molecular docking, molecular dynamics simulations, and MM-GBSA analysis were conducted to gain a better understanding of the effects of Aβ on ABCA1. In response to Aβ, the protein levels of ABCA1 increase significantly in microglia, astrocytes, and neurons; however, its ability to enhance cholesterol efflux is diminished. Aβ inhibited the function of ABCA1 by obstructing the extracellular tunnel that transports lipids outside the cell, as determined by molecular docking. MD simulation analysis validated these findings. Our results demonstrated that Aβ could increase ABCA1 protein levels in various brain cells, regardless of cell type. Molecular docking, molecular dynamics simulation, and MM-GBSA studies indicate that Aβ has a significant effect on the structural conformation of ABCA1, possibly interfering with its function. We believe that the conformational changes of ABCA1 will inhibit its ability to subsequently release cellular cholesterol. Aβ may obstruct the extracellular tunnel of ABCA1, rendering it less accessible to proteases such as the calpain family, which may explain the increase in ABCA1 levels but decrease in its function.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Vahid Zarezade
- Hyperlipidemia Research Center, Department of Clinical Biochemistry, Faculty of Medicine, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Zahra Nazeri
- Department of Biochemistry, Medical School, Cellular & Molecular Research Center, Medical Basic Sciences Research Institute, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Shirin Azizidoost
- Atherosclerosis Research Center, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Maryam Cheraghzadeh
- Department of Biochemistry, Medical School, Cellular & Molecular Research Center, Medical Basic Sciences Research Institute, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Hossein Babaahmadi-Rezaei
- Hyperlipidemia Research Center, Department of Clinical Biochemistry, Faculty of Medicine, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Alireza Kheirollah
- Department of Biochemistry, Medical School, Cellular & Molecular Research Center, Medical Basic Sciences Research Institute, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
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Lo TY, Chan ASL, Cheung ST, Yung LY, Leung MMH, Wong YH. Multi-target regulatory mechanism of Yang Xin Tang - a traditional Chinese medicine against dementia. Chin Med 2023; 18:101. [PMID: 37587513 PMCID: PMC10428601 DOI: 10.1186/s13020-023-00813-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2023] [Accepted: 07/28/2023] [Indexed: 08/18/2023] Open
Abstract
BACKGROUND Yang Xin Tang (YXT) is a traditional Chinese herbal preparation which has been reported to improve cognitive function and memory in patients with dementia. As the underlying mechanism of action of YXT has not been elucidated, we examined the effects of YXT and its major herbal components in regulating gene transcription and molecular targets related to Alzheimer's disease (AD). METHODS Aqueous and ethanol extracts of YXT and selected herbal components were prepared and validated by standard methods. A series of biochemical and cellular assays were employed to assess the ability of the herbal extracts to inhibit acetylcholinesterase, reduce β-amyloid aggregation, stimulate the differentiation of neural progenitor cells, suppress cyclooxygenase, and protect neurons against β-amyloid or N-methyl-D-aspartate-induced cytotoxicity. The effects of YXT on multiple molecular targets were further corroborated by a panel of nine reporter gene assays. RESULTS Extracts of YXT and two of its constituent herbs, Poria cocos and Poria Sclerotium pararadicis, significantly inhibited β-amyloid aggregation and β-amyloid-induced cytotoxicity. A protective effect of the YXT extract was similarly observed against N-methyl-D-aspartate-induced cytotoxicity in primary neurons, and this activity was shared by extracts of Radix Astragali and Rhizoma Chuanxiong. Although the YXT extract was ineffective, extracts of Poria cocos, Poria Sclerotium pararadicis and Radix Polygalae inhibited acetylcholine esterase, with the latter also capable of upregulating choline acetyltransferase. YXT and its components significantly inhibited the activities of the pro-inflammatory cyclooxygenases. Additionally, extracts of YXT and several of its constituent herbs significantly stimulated the phosphorylation of extracellular signal-regulated kinases and cAMP-responsive element binding protein, two molecular targets involved in learning and memory, as well as in the regulation of neurogenesis. CONCLUSIONS Several constituents of YXT possess multiple regulatory effects on known therapeutic targets of AD that range from β-amyloid to acetylcholinesterase. The demonstrated neuroprotective and neurogenic actions of YXT lend credence to its use as an alternative medicine for treating AD.
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Affiliation(s)
- Tung Yan Lo
- Division of Life Science and the Biotechnology Research Institute, Hong Kong University of Science and Technology, Hong Kong, China
| | - Anthony Siu Lung Chan
- Division of Life Science and the Biotechnology Research Institute, Hong Kong University of Science and Technology, Hong Kong, China
| | - Suet Ting Cheung
- Division of Life Science and the Biotechnology Research Institute, Hong Kong University of Science and Technology, Hong Kong, China
| | - Lisa Ying Yung
- Division of Life Science and the Biotechnology Research Institute, Hong Kong University of Science and Technology, Hong Kong, China
| | - Manton Man Hon Leung
- Division of Life Science and the Biotechnology Research Institute, Hong Kong University of Science and Technology, Hong Kong, China
- Sir William Dunn School of Pathology, University of Oxford, Oxford, UK
| | - Yung Hou Wong
- Division of Life Science and the Biotechnology Research Institute, Hong Kong University of Science and Technology, Hong Kong, China.
- State Key Laboratory of Molecular Neuroscience, Molecular Neuroscience Center, Hong Kong University of Science and Technology, Hong Kong, China.
- Center for Aging Science, Hong Kong University of Science and Technology, Hong Kong, China.
- Hong Kong Center for Neurodegenerative Diseases, Units 1501-1502, 17 Science Park West Avenue, Hong Kong Science Park, Shatin, New Territories, Hong Kong, China.
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Astragaloside IV: A promising natural neuroprotective agent for neurological disorders. Biomed Pharmacother 2023; 159:114229. [PMID: 36652731 DOI: 10.1016/j.biopha.2023.114229] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2022] [Revised: 01/05/2023] [Accepted: 01/05/2023] [Indexed: 01/18/2023] Open
Abstract
Neurological disorders are characterized by high morbidity, disability, and mortality rates, which seriously threaten human health. However, clinically satisfactory agents for treatment are still currently lacking. Therefore, finding neuroprotective agents with minimum side effects and better efficacy is a challenge. Chinese herbal medicine, particularly natural preparations extracted from herbs or plants, has become an unparalleled resource for discovering new agent candidates. Astragali Radix is an important Qi tonic drug in traditional Chinese medicine and has a long medicinal history. As a natural medicine, it has a good prevention and treatment effect on neurological disorders. Here, the role and mechanism of astragaloside IV in the treatment of neurological disorders were evaluated and discussed through previous research results. Related information from major scientific databases, such as PubMed, MEDLINE, Web of Science, ScienceDirect, Embase, BIOSIS Previews, and the Cochrane Central Register of Controlled Trials and Cochrane Library, covering between 2001 and 2021 was compiled, using "Astragaloside IV" and "Neurological disorders," "Astragaloside IV," and "Neurodegenerative diseases" as reference terms. By summarizing previous research results, we found that astragaloside IV may play a neuroprotective role through various mechanisms: anti-inflammatory, anti-oxidative, anti-apoptotic protection of nerve cells and regulation of nerve growth factor, as well as by inhibiting neurodegeneration and promoting nerve regeneration. Astragaloside IV is a promising natural neuroprotective agent. By determining its pharmacological mechanism, astragaloside IV may be a new candidate drug for the treatment of neurological disorders.
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Abd Elrahim Abd Elkader HT, Essawy AE, Al-Shami AS. Astragalus species: Phytochemistry, biological actions and molecular mechanisms underlying their potential neuroprotective effects on neurological diseases. PHYTOCHEMISTRY 2022; 202:113293. [PMID: 35780924 DOI: 10.1016/j.phytochem.2022.113293] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/04/2022] [Revised: 06/02/2022] [Accepted: 06/26/2022] [Indexed: 06/15/2023]
Abstract
Neurodegenerative and neuropsychiatric illnesses are prevalent and life-threatening disorders characterized by a wide range of clinical syndromes and comorbidities, all of which have complex origins and share common molecular pathomechanisms. Although the pathophysiology of neurological illnesses is not completely understood, researchers have discovered that several ion channels and signalling pathways may have played a role in disease pathogenesis. Active substances from Astragalus sp. are being employed for nutrition, and their usefulness in the treatment of neurological illnesses is receiving more attention. Because their extracts and active components exert different pharmacological effects on a variety of ailments, they have a long history of usage as a cure for various diseases. This review summarizes the research work on Astragalus and their biologically active constituents as potential candidates for the protection against and treatment of neurodegenerative and neuropsychiatric disorders to show the potential efficacy of Astragalus sp. and its active ingredients in treating some neurological diseases. Simultaneously, the chemical structures of these active compounds, their sources, biological properties, and mechanisms are also listed. In ethnopharmacological applications, Astragalus membranaceus and spinosus have been studied as traditional medicines worldwide. The chemical constituents of Astragalus species mainly comprise terpenoids, flavonoids, and polysaccharides. The extracts and phytochemical compounds of Astragalus species exhibit various pharmacological activities, including antioxidant, anti-inflammatory, anticancer, antitumor, anticonvulsive, immunomodulatory, and other activities. Based on the current literature, we conclude that Astragalus is a promising dietary herb with multiple potential signal modulating applications that mainly include the modulation of neurotransmitters and receptors, anti-inflammatory activities, inhibition of amyloid aggregation, induction of myelin sheath repair and neurogenesis, as well as activation of the signalling pathways relevant to neurological diseases.
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Affiliation(s)
| | - Amina E Essawy
- Zoology Department, Faculty of Science, Alexandria University, Alexandria, Egypt
| | - Ahmed S Al-Shami
- Zoology Department, Faculty of Science, Alexandria University, Alexandria, Egypt; Biotechnology Department, Institute of Graduate Studies and Research, Alexandria University, Alexandria, Egypt
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New insights into the role and mechanisms of ginsenoside Rg1 in the management of Alzheimer's disease. Biomed Pharmacother 2022; 152:113207. [PMID: 35667236 DOI: 10.1016/j.biopha.2022.113207] [Citation(s) in RCA: 29] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2022] [Revised: 05/11/2022] [Accepted: 05/25/2022] [Indexed: 11/20/2022] Open
Abstract
Alzheimer's disease (AD) is a common neurodegenerative disorder in the elderly characterized by memory loss and cognitive dysfunction. The pathogenesis of AD is complex. One-targeted anti-AD drugs usually fail to delay AD progression. Traditional Chinese medicine records have documented the use of the roots of Panax ginseng (ginseng roots) and its prescriptions to treat dementia. Ginsenoside Rg1, the main ginsenoside component of ginseng roots, exhibits a certain therapeutic effect in the abovementioned diseases, suggesting its potential in the management of AD. Therefore, we combed the pathogenesis of AD and currently used anti-AD drugs, and reviewed the availability, pharmacokinetics, and pharmaceutic studies of ginsenoside Rg1. This review summarizes the therapeutic effects and mechanisms of ginsenoside Rg1 and its deglycosylated derivatives in AD in vivo and in vitro. The main mechanisms include improvement in Aβ and Tau pathologies, regulation of synaptic function and intestinal microflora, and reduction of inflammation, oxidative stress, and apoptosis. The underlying mechanisms mainly involve the regulation of PKC, MAPK, PI3K/Akt, CDK5, GSK-3β, BDNF/TrkB, PKA/CREB, FGF2/Akt, p21WAF1/CIP1, NF-κB, NLRP1, TLR3, and TLR4 signaling pathways. As the effects and underlying mechanisms of ginsenoside Rg1 on AD have not been systematically reviewed, we have provided a comprehensive review and shed light on the future directions in the utilization of ginsenoside Rg1 and ginseng roots as well as the development of anti-AD drugs.
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Wang YL, Chio CC, Kuo SC, Yeh CH, Ma JT, Liu WP, Lin MT, Lin KC, Chang CP. Exercise Rehabilitation and/or Astragaloside Attenuate Amyloid-beta Pathology by Reversing BDNF/TrkB Signaling Deficits and Mitochondrial Dysfunction. Mol Neurobiol 2022; 59:3091-3109. [PMID: 35262870 DOI: 10.1007/s12035-022-02728-3] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2021] [Accepted: 01/03/2022] [Indexed: 12/13/2022]
Abstract
We aim to investigate the mechanisms underlying the beneficial effects of exercise rehabilitation (ER) and/or astragaloside (AST) in counteracting amyloid-beta (Aβ) pathology. Aβ oligomers were microinjected into the bilateral ventricles to induce Aβ neuropathology in rats. Neurobehavioral functions were evaluated. Cortical and hippocampal expressions of both BDNF/TrkB and cathepsin D were determined by the western blotting method. The rat primary cultured cortical neurons were incubated with BDNF and/or AST and ANA12 followed by exposure to aggregated Aβ for 24 h. In vivo results showed that ER and/or AST reversed neurobehavioral disorders, downregulation of cortical and hippocampal expression of both BDNF/TrkB and cathepsin D, neural pathology, Aβ accumulation, and altered microglial polarization caused by Aβ. In vitro studies also confirmed that topical application of BDNF and/or AST reversed the Aβ-induced cytotoxicity, apoptosis, mitochondrial distress, and synaptotoxicity and decreased expression of p-TrkB, p-Akt, p-GSK3β, and β-catenin in rat cortical neurons. The beneficial effects of combined ER (or BDNF) and AST therapy in vivo and in vitro were superior to ER (or BDNF) or AST alone. Furthermore, we observed that any gains from ER (or BDNF) and/or AST could be significantly eliminated by ANA-12, a potent BDNF/TrkB antagonist. These results indicate that whereas ER (or BDNF) and/or AST attenuate Aβ pathology by reversing BDNF/TrkB signaling deficits and mitochondrial dysfunction, combining these two potentiates each other's therapeutic effects. In particular, AST can be an alternative therapy to replace ER.
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Affiliation(s)
- Yu-Ling Wang
- Department of Physical Medicine and Rehabilitation, Chi-Mei Medical Center, Tainan, Taiwan.,Center for General Education, Southern Taiwan University of Science and Technology, Tainan, Taiwan
| | - Chung-Ching Chio
- Division of Neurosurgery, Department of Surgery, Chi Mei Medical Center, Tainan, Taiwan
| | - Shu-Chun Kuo
- Department of Ophthalmology, Chi Mei Medical Center, Tainan, Taiwan.,Department of Optometry, Chung Hwa University of Medical Technology, Tainan, Taiwan
| | - Chao-Hung Yeh
- Division of Neurosurgery, Department of Surgery, Chi Mei Medical Center, Tainan, Taiwan.,Department of Optometry, Chung Hwa University of Medical Technology, Tainan, Taiwan
| | - Jui-Ti Ma
- Department of Medical Research, Chi Mei Medical Center, No. 901, Zhonghua Rd, Yongkang District, Tainan City 710, Taiwan
| | - Wen-Pin Liu
- Department of Medical Research, Chi Mei Medical Center, No. 901, Zhonghua Rd, Yongkang District, Tainan City 710, Taiwan
| | - Mao-Tsun Lin
- Department of Medical Research, Chi Mei Medical Center, No. 901, Zhonghua Rd, Yongkang District, Tainan City 710, Taiwan
| | - Kao-Chang Lin
- Department of Holistic Care, Chi Mei Medical Center, No. 901, Zhonghua Rd, Yongkang District, Tainan City 710, Taiwan. .,Department of Neurology, Chi Mei Medical Center, Tainan, Taiwan.
| | - Ching-Ping Chang
- Department of Medical Research, Chi Mei Medical Center, No. 901, Zhonghua Rd, Yongkang District, Tainan City 710, Taiwan.
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Deng C, Chen H, Meng Z, Meng S. Roles of traditional chinese medicine regulating neuroendocrinology on AD treatment. Front Endocrinol (Lausanne) 2022; 13:955618. [PMID: 36213283 PMCID: PMC9533021 DOI: 10.3389/fendo.2022.955618] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/29/2022] [Accepted: 09/01/2022] [Indexed: 11/20/2022] Open
Abstract
The incidence of sporadic Alzheimer's disease (AD) is increasing in recent years. Studies have shown that in addition to some genetic abnormalities, the majority of AD patients has a history of long-term exposure to risk factors. Neuroendocrine related risk factors have been proved to be strongly associated with AD. Long-term hormone disorder can have a direct detrimental effect on the brain by producing an AD-like pathology and result in cognitive decline by impairing neuronal metabolism, plasticity and survival. Traditional Chinese Medicine(TCM) may regulate the complex process of endocrine disorders, and improve metabolic abnormalities, as well as the resulting neuroinflammation and oxidative damage through a variety of pathways. TCM has unique therapeutic advantages in treating early intervention of AD-related neuroendocrine disorders and preventing cognitive decline. This paper reviewed the relationship between neuroendocrine and AD as well as the related TCM treatment and its mechanism. The advantages of TCM intervention on endocrine disorders and some pending problems was also discussed, and new insights for TCM treatment of dementia in the future was provided.
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Affiliation(s)
- Chujun Deng
- Department of Traditional Chinese Medicine, Shanghai Jiao Tong University Affiliated Sixth People’s Hospital, Shanghai, China
| | - Huize Chen
- Department of Traditional Chinese Medicine, Shanghai Jiao Tong University Affiliated Sixth People’s Hospital, Shanghai, China
| | - Zeyu Meng
- The Second Clinical Medical College, Heilongjiang University of Chinese Medicine, Harbin, China
| | - Shengxi Meng
- Department of Traditional Chinese Medicine, Shanghai Jiao Tong University Affiliated Sixth People’s Hospital, Shanghai, China
- *Correspondence: Shengxi Meng,
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Gong P, Wang D, Cui D, Yang Q, Wang P, Yang W, Chen F. Anti-aging function and molecular mechanism of Radix Astragali and Radix Astragali preparata via network pharmacology and PI3K/Akt signaling pathway. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2021; 84:153509. [PMID: 33636579 DOI: 10.1016/j.phymed.2021.153509] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/13/2020] [Revised: 01/26/2021] [Accepted: 02/08/2021] [Indexed: 06/12/2023]
Abstract
BACKGROUND Radix Astragali (RA) consists of the dried root of Astragalus membranaceus Bunge and is one of the most frequently used dietetic Chinese herbs to treat inflammation and neurodegenerative disease among other conditions. Radix Astragali preparata (RAP) is a medicinal form of RA. RA and RAP have been used as anti-aging agent, however, the mechanisms underlying their effects are still unclear. PURPOSE Considering the wide application of RA and RAP in clinical practice, it is necessary to identify the better product between the two and elucidate the molecular mechanism responsible for their anti-aging effects. STUDY DESIGN In this study, network pharmacology integrated with molecular biology techniques were employed to explore the possible mechanism of RA and RAP against aging. METHODS Aging animal models were constructed by exposure to D-galactose (D-gal), and the anti-aging effect of RA and RAP were determined based on behavior tests and histomorphological observation. Network pharmacology was performed to construct the "compound-target-pathway" network. Gene and protein expression of possible targets were validated and analyzed using qRT-PCR and Western blotting. RESULTS Treatment by RA and RAP could alleviate the symptoms of aging such as a decrease in body weight and organ indices, behavioral impairment, increased oxidative stress, weaken histopathological evaluation. The effect of RAP was more pronounced than that of RA in preventing aging process in a mouse model. The anti-aging effect of RA and RAP is associated with the balance of oxidative stress and activation of PI3K/Akt signaling pathway. CONCLUSION Using an integrated strategy of network pharmacology and molecular biology we attempted to elucidate the mechanisms of action of RA and RAP.
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Affiliation(s)
- Pin Gong
- School of Food and biotechnological Engineering, Shaanxi University of Science and Technology, Xi'an, 710021, China.
| | - Danni Wang
- School of Food and biotechnological Engineering, Shaanxi University of Science and Technology, Xi'an, 710021, China
| | - Dandan Cui
- School of Food and biotechnological Engineering, Shaanxi University of Science and Technology, Xi'an, 710021, China
| | - Qian Yang
- School of Food and biotechnological Engineering, Shaanxi University of Science and Technology, Xi'an, 710021, China
| | - Peipei Wang
- School of Food and biotechnological Engineering, Shaanxi University of Science and Technology, Xi'an, 710021, China
| | - Wenjuan Yang
- School of Food and biotechnological Engineering, Shaanxi University of Science and Technology, Xi'an, 710021, China
| | - Fuxin Chen
- School of Chemistry and Chemical Engineering, Xi'an University of Science and Technology, Xi'an, 710054, China.
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Senol Deniz FS, Eren G, Orhan IE, Sener B, Ozgen U, Aldaba R, Calis I. Outlining In Vitro and In Silico Cholinesterase Inhibitory Activity of Twenty-Four Natural Products of Various Chemical Classes: Smilagenin, Kokusaginine, and Methyl Rosmarinate as Emboldening Inhibitors. Molecules 2021; 26:molecules26072024. [PMID: 33916300 PMCID: PMC8037418 DOI: 10.3390/molecules26072024] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2021] [Revised: 03/18/2021] [Accepted: 03/23/2021] [Indexed: 12/04/2022] Open
Abstract
Cholinesterase (ChE) inhibition is an important treatment strategy for Alzheimer’s disease (AD) as acetylcholinesterase (AChE) and butyrylcholinesterase (BChE) are involved in the pathology of AD. In the current work, ChE inhibitory potential of twenty-four natural products from different chemical classes (i.e., diosgenin, hecogenin, rockogenin, smilagenin, tigogenin, astrasieversianins II and X, astragalosides I, IV, and VI, cyclocanthosides E and G, macrophyllosaponins A-D, kokusaginin, lamiide, forsythoside B, verbascoside, alyssonoside, ipolamide, methyl rosmarinate, and luteolin-7-O-glucuronide) was examined using ELISA microtiter assay. Among them, only smilagenin and kokusaginine displayed inhibitory action against AChE (IC50 = 43.29 ± 1.38 and 70.24 ± 2.87 µg/mL, respectively). BChE was inhibited by only methyl rosmarinate and kokusaginine (IC50 = 41.46 ± 2.83 and 61.40 ± 3.67 µg/mL, respectively). IC50 values for galantamine as the reference drug were 1.33 ± 0.11 µg/mL for AChE and 52.31 ± 3.04 µg/mL for BChE. Molecular docking experiments showed that the orientation of smilagenin and kokusaginine was mainly driven by the interactions with the peripheral anionic site (PAS) comprising residues of hAChE, while kokusaginine and methyl rosmarinate were able to access deeper into the active gorge in hBChE. Our data indicate that similagenin, kokusaginine, and methyl rosmarinate could be hit compounds for designing novel anti-Alzheimer agents.
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Affiliation(s)
- F. Sezer Senol Deniz
- Department of Pharmacognosy, Faculty of Pharmacy, Gazi University, 06330 Ankara, Turkey; (F.S.S.D.); (B.S.)
| | - Gokcen Eren
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Gazi University, 06330 Ankara, Turkey;
| | - Ilkay Erdogan Orhan
- Department of Pharmacognosy, Faculty of Pharmacy, Gazi University, 06330 Ankara, Turkey; (F.S.S.D.); (B.S.)
- Correspondence:
| | - Bilge Sener
- Department of Pharmacognosy, Faculty of Pharmacy, Gazi University, 06330 Ankara, Turkey; (F.S.S.D.); (B.S.)
| | - Ufuk Ozgen
- Department of Pharmacognosy, Faculty of Pharmacy, Karadeniz Technical University, 61080 Trabzon, Turkey;
| | - Randa Aldaba
- Department of Pharmacognosy, Faculty of Pharmacy, Near East University, 99138 Nicosia, Turkey; (R.A.); (I.C.)
| | - Ihsan Calis
- Department of Pharmacognosy, Faculty of Pharmacy, Near East University, 99138 Nicosia, Turkey; (R.A.); (I.C.)
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Wu W, He X, Xie S, Li B, Chen J, Qu Y, Li B, Lei M, Liu X. Protective effects of Huang-Lian-Jie-Du-Tang against A β25-35-induced memory deficits and oxidative stress in rats. J Int Med Res 2021; 48:300060519893859. [PMID: 32223685 PMCID: PMC7133406 DOI: 10.1177/0300060519893859] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
Objective Huang-Lian-Jie-Du-Tang (HLJDT), a traditional Chinese medicine, improves cognitive ability in rat models of Alzheimer’s disease (AD). The objective of this study was to evaluate the protective effects of HLJDT on learning and memory impairment that are caused by Aβ25–35. Methods Rats were randomly assigned to the following groups: control (water), Aβ25–35, donepezil hydrochloride 1.05 mg/kg, HLJDT 6 g/kg, HLJDT 3 g/kg, and HLJDT 1.5 g/kg and the corresponding drugs were administered for 28 days by oral gavage. HLJDT for the prevention of Aβ25–35-induced injury in rats and the underlying mechanisms were assessed. Aβ25–35 and amyloid precursor protein (APP) levels were measured in the hippocampal specimens. Total superoxide dismutase (T-SOD), glutathione (GSH), and malondialdehyde (MDA) levels in the hippocampus were also measured. The ultrastructure of CA1 hippocampal region was observed using electron microscopy. Results HLJDT treatment ameliorated impaired learning and memory significantly, decreased Aβ25–35, and APP levels in the hippocampus, increased T-SOD and GSH activity and decreased the MDA concentration, and alleviated the nuclear and cytoplasmic abnormalities of the hippocampal CA 1 region that were induced by Aβ25–35 injection. Conclusions HLJDT might decrease hippocampal vulnerability to Aβ25–35, suggesting its potential neuroprotective effect in AD.
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Affiliation(s)
- Wenbin Wu
- Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, P.R. China
| | - Xiaojing He
- School of Clinical Medicine, Chengdu University of Traditional Chinese Medicine, Chengdu, P.R. China
| | - Shuling Xie
- School of Clinical Medicine, Chengdu University of Traditional Chinese Medicine, Chengdu, P.R. China
| | - Bin Li
- School of Clinical Medicine, Chengdu University of Traditional Chinese Medicine, Chengdu, P.R. China
| | - Jinxin Chen
- School of Clinical Medicine, Chengdu University of Traditional Chinese Medicine, Chengdu, P.R. China
| | - Yanqin Qu
- School of Clinical Medicine, Chengdu University of Traditional Chinese Medicine, Chengdu, P.R. China
| | - Baiyang Li
- School of Clinical Medicine, Chengdu University of Traditional Chinese Medicine, Chengdu, P.R. China
| | - Ming Lei
- Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, P.R. China
| | - Xuehui Liu
- Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, P.R. China
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14
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Zhao L, Sun Y, Yu C, Chen J, Xu X, Zhang X, Wang H, Zhang J, Wang H, Dong J, Yao B, Zhou H, Liu S, Peng R. Astragaloside protects rat brain from microwave-induced functional injuries via restoring acetylcholine and normalizing electroencephalogram. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2020; 27:40787-40794. [PMID: 32677014 DOI: 10.1007/s11356-020-07915-0] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/17/2019] [Accepted: 01/28/2020] [Indexed: 06/11/2023]
Abstract
Studies from our group and others have reported that 30 mW/cm2 microwave could damage the structures of rat hippocampus, as well as impair the neuronal functions. The neuroprotective effects of astragaloside, purified from Astragalus membranaceus, have been demonstrated in animal models of neurodegenerative diseases. In this study, we found that 30 mW/cm2 microwave impaired spatial learning and memory ability in rats, while astragaloside could significantly alleviate the injuries. The pathological analysis also showed that astragaloside protected neurons from microwave-induced damages, such as mitochondrial swelling and cavitation, rough endoplasmic reticulum swelling and dilation, synaptic gap disappearing, and vesicle aggregation. Moreover, microwave-induced structural damage of synapse resulted in downregulation of acetylcholine, an important neurotransmitter for information transmission, while astragaloside could protect the structure of synapse, as well as restore the acetylcholine level in rat hippocampus. Furthermore, astragaloside also accelerated the recovery of brain electroencephalogram (EEG) after microwave exposure, indicating that astragaloside could promote the normalization of neuronal functions. In conclusion, astragaloside protected the morphological structures and restored acetylcholine level in rat hippocampus, which could improve brain functions via normalizing brain EEG. Therefore, astragaloside might be a promising candidate to treat microwave-induced injuries of central nervous system (CNS).
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Affiliation(s)
- Li Zhao
- Beijing Institute of Radiation Medicine, 27 Taiping Road, Haidian District, Beijing, 100850, People's Republic of China
| | - Yunbo Sun
- Beijing Institute of Radiation Medicine, 27 Taiping Road, Haidian District, Beijing, 100850, People's Republic of China
| | - Chao Yu
- Beijing Institute of Radiation Medicine, 27 Taiping Road, Haidian District, Beijing, 100850, People's Republic of China
| | - Junjun Chen
- Xinyang Central Hospital, Xinyang, Henan, 464000, People's Republic of China
| | - Xinping Xu
- Beijing Institute of Radiation Medicine, 27 Taiping Road, Haidian District, Beijing, 100850, People's Republic of China
| | - Xueyan Zhang
- Beijing Institute of Radiation Medicine, 27 Taiping Road, Haidian District, Beijing, 100850, People's Republic of China
| | - Hui Wang
- Beijing Institute of Radiation Medicine, 27 Taiping Road, Haidian District, Beijing, 100850, People's Republic of China
| | - Jing Zhang
- Beijing Institute of Radiation Medicine, 27 Taiping Road, Haidian District, Beijing, 100850, People's Republic of China
| | - Haoyu Wang
- Beijing Institute of Radiation Medicine, 27 Taiping Road, Haidian District, Beijing, 100850, People's Republic of China
| | - Ji Dong
- Beijing Institute of Radiation Medicine, 27 Taiping Road, Haidian District, Beijing, 100850, People's Republic of China
| | - Binwei Yao
- Beijing Institute of Radiation Medicine, 27 Taiping Road, Haidian District, Beijing, 100850, People's Republic of China
| | - Hongmei Zhou
- Beijing Institute of Radiation Medicine, 27 Taiping Road, Haidian District, Beijing, 100850, People's Republic of China
| | - Shuchen Liu
- Beijing Institute of Radiation Medicine, 27 Taiping Road, Haidian District, Beijing, 100850, People's Republic of China.
| | - Ruiyun Peng
- Beijing Institute of Radiation Medicine, 27 Taiping Road, Haidian District, Beijing, 100850, People's Republic of China.
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Fu Y, Wei J, Li B, Gao L, Xia P, Wen Y, Xu S. CGA ameliorates cognitive decline by regulating the PI3K/AKT signaling pathway and neurotransmitter systems in rats with multi-infarct dementia. Exp Ther Med 2020; 20:70. [PMID: 32963600 PMCID: PMC7490799 DOI: 10.3892/etm.2020.9198] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2019] [Accepted: 02/13/2020] [Indexed: 12/26/2022] Open
Abstract
Multi infarct dementia (MID) is a form of dementia that is preventable and treatable. However, at present, the drugs used in MID treatment were developed for Alzheimer's disease. While only a limited range of drugs is available, the incidence of MID is increasing year on year. The present study aimed to investigate the effect and underlying mechanisms of a combination of ginsenosides and astragalosides (CGA) on cognitive decline in rats with MID. A rat model of MID was established using micro-thromboembolism, and the behavioral changes in the rats were evaluated using the Morris water maze and open field tests at 60 days post-CGA intervention. The pathological morphology of the hippocampal CA1 area was observed using hematoxylin and eosin staining. The contents of ATP, ADP and AMP were determined using high-performance liquid chromatography. Mitochondrial swelling and changes in the membrane potential in the hippocampus were detected using flow cytometry, and the changes in insulin, glutamate and γ-aminobutyric acid (GABA) content were detected using ELISA. Additionally, the expression of PI3K and AKT proteins was detected using western blot analysis. In a rat model of MID, CGA shortened the escape latency, increased the frequency of platform crossing, improved the disordered vertebral cell arrangement and reduced the cell number in the hippocampal CA1 area. CGA also reduced the degree of mitochondrial swelling, increased the mitochondrial membrane potential, and elevated the energy load and ATP content in the brain of rats with MID. Furthermore, CGA increased the insulin content and upregulated the expression of PI3K and AKT in the brain of rats with MID. In addition, in the rat model of MID, CGA also enhanced the movement time and the frequency of standing, and decreased the concentration of glutamate and GABA in the brain tissue. Amelioration of the cognitive decline in rats with MID by CGA was associated with its regulatory effect on the PI3K/AKT signaling pathway and neurotransmitter systems.
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Affiliation(s)
- Ying Fu
- School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, Sichuan 611137, P.R. China.,Institute of Meterial Medica Integration and Transformation for Brain Disorders, Chengdu University of Traditional Chinese Medicine, Chengdu, Sichuan 611137, P.R. China
| | - Jiangping Wei
- School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, Sichuan 611137, P.R. China.,Institute of Meterial Medica Integration and Transformation for Brain Disorders, Chengdu University of Traditional Chinese Medicine, Chengdu, Sichuan 611137, P.R. China
| | - Bin Li
- Institute of Meterial Medica Integration and Transformation for Brain Disorders, Chengdu University of Traditional Chinese Medicine, Chengdu, Sichuan 611137, P.R. China.,Geriatrics Department, Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, Sichuan 610075, P.R. China
| | - Lijuan Gao
- School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, Sichuan 611137, P.R. China.,Institute of Meterial Medica Integration and Transformation for Brain Disorders, Chengdu University of Traditional Chinese Medicine, Chengdu, Sichuan 611137, P.R. China
| | - Peng Xia
- School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, Sichuan 611137, P.R. China.,Institute of Meterial Medica Integration and Transformation for Brain Disorders, Chengdu University of Traditional Chinese Medicine, Chengdu, Sichuan 611137, P.R. China
| | - Yueqiang Wen
- Institute of Meterial Medica Integration and Transformation for Brain Disorders, Chengdu University of Traditional Chinese Medicine, Chengdu, Sichuan 611137, P.R. China.,School of Basic Medicine, Chengdu University of Traditional Chinese Medicine, Chengdu, Sichuan 611137, P.R. China
| | - Shijun Xu
- School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, Sichuan 611137, P.R. China.,Institute of Meterial Medica Integration and Transformation for Brain Disorders, Chengdu University of Traditional Chinese Medicine, Chengdu, Sichuan 611137, P.R. China
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16
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New Insights for Cellular and Molecular Mechanisms of Aging and Aging-Related Diseases: Herbal Medicine as Potential Therapeutic Approach. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2019; 2019:4598167. [PMID: 31915506 PMCID: PMC6930799 DOI: 10.1155/2019/4598167] [Citation(s) in RCA: 52] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/21/2019] [Revised: 09/28/2019] [Accepted: 10/16/2019] [Indexed: 02/07/2023]
Abstract
Aging is a progressive disease affecting around 900 million people worldwide, and in recent years, the mechanism of aging and aging-related diseases has been well studied. Treatments for aging-related diseases have also made progress. For the long-term treatment of aging-related diseases, herbal medicine is particularly suitable for drug discovery. In this review, we discuss cellular and molecular mechanisms of aging and aging-related diseases, including oxidative stress, inflammatory response, autophagy and exosome interactions, mitochondrial injury, and telomerase damage, and summarize commonly used herbals and compounds concerned with the development of aging-related diseases, including Ginkgo biloba, ginseng, Panax notoginseng, Radix astragali, Lycium barbarum, Rhodiola rosea, Angelica sinensis, Ligusticum chuanxiong, resveratrol, curcumin, and flavonoids. We also summarize key randomized controlled trials of herbal medicine for aging-related diseases during the past ten years. Adverse reactions of herbs were also described. It is expected to provide new insights for slowing aging and treating aging-related diseases with herbal medicine.
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Wang K, Sun W, Zhang L, Guo W, Xu J, Liu S, Zhou Z, Zhang Y. Oleanolic Acid Ameliorates Aβ25-35 Injection-induced Memory Deficit in Alzheimer's Disease Model Rats by Maintaining Synaptic Plasticity. CNS & NEUROLOGICAL DISORDERS-DRUG TARGETS 2019; 17:389-399. [PMID: 29793416 PMCID: PMC6327117 DOI: 10.2174/1871527317666180525113109] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/11/2018] [Revised: 05/07/2018] [Accepted: 05/22/2018] [Indexed: 12/13/2022]
Abstract
Background: Abnormal amyloid β (Aβ) accumulation and deposition in the hippocampus is an essential process in Alzheimer’s disease (AD). Objective: To investigate whether Oleanolic acid (OA) could improve memory deficit in AD model and its possible mechanism. Methods: Forty-five SD rats were randomly divided into sham operation group, model group, and OA group. AD models by injection of Aβ25-35 were built. Morris water maze (MWM) was applied to inves-tigate learning and memory, transmission electron microscope (TEM) to observe the ultrastructure of synapse, western blot to the proteins, electrophysiology for long-term potentiation (LTP), and Ca2+ con-centration in synapse was also measured. Results: The latency time in model group was significantly longer than that in sham operation group (P=0.0001); while it was significantly shorter in the OA group than that in model group (P=0.0001); compared with model group, the times of cross-platform in OA group significantly increased (P=0.0001). TEM results showed OA could alleviate neuron damage and synapses changes induced by Aβ25-35. The expressions of CaMKII, PKC, NMDAR2B, BDNF, TrkB, and CREB protein were signif-icantly improved by OA (P=0.0001, 0.036, 0.041, 0.0001, 0.0001, 0.026, respectively) compared with that in model group; the concentration of Ca2+ was significantly lower in OA group (1.11±0.42) than that in model group (1.68±0.18); and the slope rate (P=0.0001) and amplitude (P=0.0001) of f-EPSP significantly increased in OA group. Conclusion: The present results support that OA could ameliorate Aβ-induced memory loss of AD rats by maintaining synaptic plasticity of the hippocampus
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Affiliation(s)
- Kai Wang
- Graduate Institutes, Tianjin University of Traditional Chinese Medicine, Tianjin, 300193, China
| | - Weiming Sun
- Graduate Institutes, Tianjin University of Traditional Chinese Medicine, Tianjin, 300193, China
| | - Linlin Zhang
- Department of Neurology, the Second Hospital Affiliated to Tianjin University of Traditional Chinese Medicine, Tianjin, 300150, China
| | - Wei Guo
- Department of Neurology, the Second Hospital Affiliated to Tianjin University of Traditional Chinese Medicine, Tianjin, 300150, China
| | - Jiachun Xu
- Graduate Institutes, Tianjin University of Traditional Chinese Medicine, Tianjin, 300193, China
| | - Shuang Liu
- Department of Neurology, the Second Hospital Affiliated to Tianjin University of Traditional Chinese Medicine, Tianjin, 300150, China
| | - Zhen Zhou
- Department of Neurology, the Second Hospital Affiliated to Tianjin University of Traditional Chinese Medicine, Tianjin, 300150, China
| | - Yulian Zhang
- Department of Neurology, the Second Hospital Affiliated to Tianjin University of Traditional Chinese Medicine, Tianjin, 300150, China
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18
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Fei HX, Zhang YB, Liu T, Zhang XJ, Wu SL. Neuroprotective effect of formononetin in ameliorating learning and memory impairment in mouse model of Alzheimer's disease. Biosci Biotechnol Biochem 2017; 82:57-64. [PMID: 29191087 DOI: 10.1080/09168451.2017.1399788] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Alzheimer's disease (AD) is the most common cause of dementia among elderly population. Deranged β-amyloid (Aβ) trafficking across the blood-brain barrier is known to be a critical element in the pathogenesis of AD. In the vascular endothelial cells of hippocampus, Aβ transport is mainly mediated by low-density lipoprotein-associated protein 1 (LRP1) and the receptor for advanced glycation end (RAGE) products; therefore, LRP1 and RAGE endothelial cells are potential therapeutic targets for AD. In this study, we explored the effects of Formononetin (FMN) on learning and memory improvement in APP/PS1 mice and the related mechanisms. We found that FMN significantly improved learning and memory ability by suppressing Aβ production from APP processing, RAGE-dependent inflammatory signaling and promoted LRP1-dependent cerebral Aβ clearance pathway. Moreover, FMN treatment alleviated ultrastructural changes in hippocampal vascular endothelial cells. In conclusion, we believe that FMN may be an efficacious and promising treatment for AD.
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Affiliation(s)
- Hong-Xin Fei
- a Department of Basic Pathology , Qiqihar Medical University , Qiqihar , China
| | - Ying-Bo Zhang
- b Pathology College , Qiqihar Medical University , Qiqihar , China
| | - Ting Liu
- b Pathology College , Qiqihar Medical University , Qiqihar , China
| | - Xiao-Jie Zhang
- b Pathology College , Qiqihar Medical University , Qiqihar , China
| | - Shu-Liang Wu
- c Department of Anatomy , Harbin Medical University , Harbin , China
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19
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Liu P, Zhao H, Luo Y. Anti-Aging Implications of Astragalus Membranaceus (Huangqi): A Well-Known Chinese Tonic. Aging Dis 2017; 8:868-886. [PMID: 29344421 PMCID: PMC5758356 DOI: 10.14336/ad.2017.0816] [Citation(s) in RCA: 178] [Impact Index Per Article: 25.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2017] [Accepted: 08/16/2017] [Indexed: 12/20/2022] Open
Abstract
Owing to a dramatic increase in average life expectancy and the Family Planning program of the 1970s - 1990s, China is rapidly becoming an aging society. Therefore, the investigation of healthspan-extending drugs becomes more urgent. Astragalus membranaceus (Huangqi) is a major medicinal herb that has been commonly used in many herbal formulations in the practice of traditional Chinese medicine (TCM) to treat a wide variety of diseases and body disorders, or marketed as life-prolonging extracts for human use in China, for more than 2000 years. The major components of Astragalus membranaceus are polysaccharides, flavonoids, and saponins. Pharmacological research indicates that the extract component of Astragalus membranaceus can increase telomerase activity, and has antioxidant, anti-inflammatory, immunoregulatory, anticancer, hypolipidemic, antihyperglycemic, hepatoprotective, expectorant, and diuretic effects. A proprietary extract of the dried root of Astragalus membranaceus, called TA-65, was associated with a significant age-reversal effect in the immune system. Our review focuses on the function and the underlying mechanisms of Astragalus membranaceus in lifespan extension, anti-vascular aging, anti-brain aging, and anti-cancer effects, based on experimental and clinical studies.
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Affiliation(s)
- Ping Liu
- 1Cerebrovascular Diseases Research Institute, and Department of Neurology, Xuanwu Hospital of Capital Medical University, Beijing, China
| | - Haiping Zhao
- 1Cerebrovascular Diseases Research Institute, and Department of Neurology, Xuanwu Hospital of Capital Medical University, Beijing, China
| | - Yumin Luo
- 1Cerebrovascular Diseases Research Institute, and Department of Neurology, Xuanwu Hospital of Capital Medical University, Beijing, China.,2Center of Stroke, Beijing Institute for Brain Disorders, Beijing, China.,3Beijing Key Laboratory of Translational Medicine for Cerebrovascular Diseases, Beijing, China
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Isoastragaloside I inhibits NF-κB activation and inflammatory responses in BV-2 microglial cells stimulated with lipopolysaccharide. Int J Mol Med 2017; 40:1270-1276. [PMID: 28902359 DOI: 10.3892/ijmm.2017.3114] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2016] [Accepted: 08/25/2017] [Indexed: 11/05/2022] Open
Abstract
The excessive activation of microglia in many neurodegenerative diseases is detrimental to neuronal survival. Isoastragaloside I (ISO I) is a natural saponin molecule found within the roots of Astragalus membranaceus, a famous traditional Chinese medicine. In the present study, the anti‑inflammatory effects and the mechanisms of action of ISO I on activated BV-2 cells stimulated with lipopolysaccharide (LPS) were investigated. ISO I dose‑dependently inhibited the excessive release of nitric oxide (NO) and tumor necrosis factor (TNF)-α in the LPS-stimulated BV-2 cells. Moreover, it decreased the production of inducible NO synthase (iNOS) and cyclooxygenase-2 (COX-2), and mitigated the gene expression of interleukin (IL)-1β, TNF-α and iNOS induced by LPS. Further experiments revealed that ISO I decreased the phosphorylation levels of nuclear factor-κB (NF-κB), and suppressed its nuclear translocation and transactivation activity. In addition, it inhibited the activation of signaling pathway molecules, such as PI3K, Akt and mitogen-activated protein kinases (MAPKs). Taken together, our findings suggest that ISO I prevents LPS-induced microglial activation probably by inhibiting the activation of the NF-κB via PI3K/Akt and MAPK signaling pathways, indicating its therapeutic potential for neurological diseases relevant to neuroinflammation.
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Sohanaki H, Baluchnejadmojarad T, Nikbakht F, Roghani M. Pelargonidin improves memory deficit in amyloid β25-35 rat model of Alzheimer's disease by inhibition of glial activation, cholinesterase, and oxidative stress. Biomed Pharmacother 2016; 83:85-91. [PMID: 27470554 DOI: 10.1016/j.biopha.2016.06.021] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2015] [Revised: 05/30/2016] [Accepted: 06/10/2016] [Indexed: 12/22/2022] Open
Abstract
Alzheimer's disease (AD) is a multifactorial disorder with devastating outcomes and few mostly palliative available therapeutic strategies. Pelargonidin (Pel), an anthocyanin compound, is an estrogen receptor agonist with lower side effects versus estrogen. This study examined neuroprotective effect of Pel on intrahippocampal amyloid β25-35 (Aβ) rat model of AD. Rats were divided into groups of sham, Aβ, and Pel-pretreated Aβ (10mg/kg; p.o.). Animals underwent Morris water maze (MWM) test in addition to measurement of hippocampal oxidative stress, acetylcholinesterase (AChE) activity, glial fibrillary acidic protein (GFAP) and inducible nitric oxide synthase (iNOS). Pel pretreatment of Aβ group significantly improved escape latency and distance swum in MWM versus Aβ group and attenuated hippocampal malondialdehyde (MDA) and increased catalase activity with no significant change of nitrite. Meanwhile, Pel improved hippocampal AChE activity and lowered GFAP level with no significant change of iNOS. Our results suggest that Pel could improve Aβ25-35-induced memory deficit through mitigation of oxidative stress, cholinergic dysfunction, and astrocyte reaction.
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Affiliation(s)
- Hamid Sohanaki
- Department of Physiology, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | | | - Farnaz Nikbakht
- Department of Physiology, School of Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Mehrdad Roghani
- Neurophysiology Research Center, Shahed University, Tehran, Iran.
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Wang X, Wang Y, Hu JP, Yu S, Li BK, Cui Y, Ren L, Zhang LD. Astragaloside IV, a Natural PPARγ Agonist, Reduces Aβ Production in Alzheimer's Disease Through Inhibition of BACE1. Mol Neurobiol 2016; 54:2939-2949. [PMID: 27023226 DOI: 10.1007/s12035-016-9874-6] [Citation(s) in RCA: 49] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2016] [Accepted: 03/17/2016] [Indexed: 01/01/2023]
Abstract
A number of epidemiological studies have established a link between Alzheimer's disease (AD) and diabetes mellitus (DM). So, nuclear receptor peroxisome proliferator-activated receptor gamma (PPARγ) plays an important role in the treatment of AD. However, current PPARγ-targeting drugs such as thiazolidinediones (TZDs) are associated with undesirable side effects. We identified herbal extract with a small molecular, astragaloside IV (AS-IV), as a selective PPARγ natural agonist in nervous cells by developing a PPAR-PPRE pathway regulatory system. Cultured SH-SY5Y cells transfected with pEGFP-N1-BACE1 were treated with AS-IV for 24 h or AS-IV plus the PPAR-γ antagonist GW9662 in vitro. APP/PS1 mice were intragastrically treated with AS-IV or AS-IV plus the GW9662 every 48 h for 3 months. Immunofluorescence, western blotting, and real-time PCR were used to examine the expression of PPARγ and BACE1. Immunohistochemical staining was performed to analyze the distribution of Aβ plaques in the APP/PS1 mouse brain. The levels of Aβ were determined using ELISA kits. AS-IV was shown to be a PPARγ agonist by establishing a high-throughput screening model for PPARγ agonists. The results showed that AS-IV treatment increased activity of PPARγ and inhibited BACE1 in vitro. As a result, Aβ levels decreased significantly. GW9662, which is a PPARγ antagonist, significantly blocked the beneficial role of AS-IV. In vivo, AS-IV treatment increased PPARγ and BACE1 expression and reduced neuritic plaque formation and Aβ levels in the brains of APP/PS1 mice. These effects of AS-IV could be effectively inhibited by GW9662. These results indicate that AS-IV may be a natural PPARγ agonist that suppressed activity of BACE1 and ultimately attenuates generation of Aβ. Therefore, AS-IV may be a promising agent for modulating Aβ-related pathology in AD.
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Affiliation(s)
- Xu Wang
- Basic Medicine combined with Chinese Traditional Medicine and Western Medicine, Liaoning University of Traditional Chinese Medicine, 110847, Shenyang, People's Republic of China
| | - Yue Wang
- Basic Medicine combined with Chinese Traditional Medicine and Western Medicine, Liaoning University of Traditional Chinese Medicine, 110847, Shenyang, People's Republic of China
| | - Jiang-Ping Hu
- Department of Histology and Embryology, Mudanjiang Medical University, Mudanjiang, People's Republic of China
| | - Song Yu
- Subject consciousness of Traditional Chinese Medicine, Liaoning University of Traditional Chinese Medicine, Shenyang, People's Republic of China
| | - Bao-Kun Li
- Basic Medicine combined with Chinese Traditional Medicine and Western Medicine, Liaoning University of Traditional Chinese Medicine, 110847, Shenyang, People's Republic of China
| | - Yong Cui
- Basic Medicine combined with Chinese Traditional Medicine and Western Medicine, Liaoning University of Traditional Chinese Medicine, 110847, Shenyang, People's Republic of China
| | - Lu Ren
- Subject consciousness of Traditional Chinese Medicine, Liaoning University of Traditional Chinese Medicine, Shenyang, People's Republic of China
| | - Li-De Zhang
- Basic Medicine combined with Chinese Traditional Medicine and Western Medicine, Liaoning University of Traditional Chinese Medicine, 110847, Shenyang, People's Republic of China.
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Chang CP, Liu YF, Lin HJ, Hsu CC, Cheng BC, Liu WP, Lin MT, Hsu SF, Chang LS, Lin KC. Beneficial Effect of Astragaloside on Alzheimer's Disease Condition Using Cultured Primary Cortical Cells Under β-amyloid Exposure. Mol Neurobiol 2015; 53:7329-7340. [PMID: 26696494 DOI: 10.1007/s12035-015-9623-2] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2015] [Accepted: 12/08/2015] [Indexed: 01/27/2023]
Abstract
β-amyloid (Aβ)-mediated neuronal apoptosis contributes to the pathogenesis of Alzheimer's disease (AD). This study aimed to investigate whether astragalosides (AST) could inhibit Aβ-induced apoptosis in vivo and in vitro and to explore the underlying mechanisms. Amyloid β-protein fragment 25-35 (Aβ25-35) was administered to cerebral lateral ventricle of rats to make the AD models in vivo. AST was able to attenuate both cortical cell degeneration and memory deficits in the AD rats. AST also inhibited Aβ25-35-induced cytotoxicity (e.g., decreased cell viability); apoptosis (e.g., increased caspase-3 expression, increased DNA fragmentation, and Tau hyperphosphorylation); synaptotoxicity (e.g., increased loss of both a dendritic marker, microtubule-associated protein 2 (MAP-2) and synaptic proteins, synaptophysins); and mitochondrial dysfunction (e.g., increased mitochondrial membrane potential) in cultured primary rat cortical cells. The beneficial effect of AST in reducing Aβ-induced cytotoxicity, apoptosis, and mitochondrial dysfunction in cortical cells were blocked by inhibition of phosphoinositide 3-kinase (PI3K)-dependent protein kinase B (PKB, as known as AKT) activation with LY294002. In addition, inhibition of extracellular protein kinase (ERK) with U0126 shared with the AST the same beneficial effects in reducing Aβ-induced apoptosis. Our data suggest that the cortical PI3K/AKT and MAPK (or ERK) pathways as appealing therapeutic targets in treating AD, and AST may have a positive impact on AD treatment via modulation of both PI3K/AKT and ERK pathways.
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Affiliation(s)
- Ching-Ping Chang
- Department of Biotechnology, Southern Taiwan University of Science and Technology, Tainan, 710, Taiwan
- Department of Medical Research, Chi Mei Medical Center, Tainan, 710, Taiwan
- The Ph.D. Program for Neural Regenerative Medicine, Taipei Medical University, Taipei, 110, Taiwan
| | - Yu-Fan Liu
- Department of Medical Research, Chi Mei Medical Center, Tainan, 710, Taiwan
| | - Hung-Jung Lin
- Department of Biotechnology, Southern Taiwan University of Science and Technology, Tainan, 710, Taiwan
- Department of Emergency Medicine, Chi Mei Medical Center, Tainan, 710, Taiwan
| | - Chien-Chin Hsu
- Department of Biotechnology, Southern Taiwan University of Science and Technology, Tainan, 710, Taiwan
- Department of Emergency Medicine, Chi Mei Medical Center, Tainan, 710, Taiwan
| | - Bor-Chih Cheng
- Department of Biotechnology, Southern Taiwan University of Science and Technology, Tainan, 710, Taiwan
- Department of Surgery, Chi Mei Medical Center, Tainan, 710, Taiwan
| | - Wen-Pin Liu
- Department of Medical Research, Chi Mei Medical Center, Tainan, 710, Taiwan
| | - Mao-Tsun Lin
- Department of Biotechnology, Southern Taiwan University of Science and Technology, Tainan, 710, Taiwan
- Department of Medical Research, Chi Mei Medical Center, Tainan, 710, Taiwan
| | - Shu-Fen Hsu
- Department of Nursing, Shu-Zen Junior College of Medicine and Management, Kaohsiung, 821, Taiwan
| | - Li-Sheng Chang
- Department of Biotechnology, Southern Taiwan University of Science and Technology, Tainan, 710, Taiwan
- Department of Emergency Medicine, Chi Mei Medical Center, Tainan, 710, Taiwan
| | - Kao-Chang Lin
- Department of Biotechnology, Southern Taiwan University of Science and Technology, Tainan, 710, Taiwan.
- Department of Neurology, Chi Mei Medical Center, Tainan, 710, Taiwan.
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Kim S, Kang IH, Nam JB, Cho Y, Chung DY, Kim SH, Kim JS, Cho YD, Hong EK, Sohn NW, Shin JW. Ameliorating the effect of astragaloside IV on learning and memory deficit after chronic cerebral hypoperfusion in rats. Molecules 2015; 20:1904-21. [PMID: 25625683 PMCID: PMC6272750 DOI: 10.3390/molecules20021904] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2014] [Accepted: 01/12/2015] [Indexed: 01/22/2023] Open
Abstract
Astragaloside IV (AS-IV) has been reported to have a prominent antioxidant effect and was proposed as a promising agent for the prevention of neurodegenerative disorders accompanied by cognitive impairment. The present study investigated the ameliorating effect of AS-IV on learning and memory deficits induced by chronic cerebral hypoperfusion in rats. Rats were treated with two doses of AS-IV (10 and 20 mg/kg, i.p.) daily for 28 days starting from the 5th week after permanent bilateral common carotid artery occlusion. AS-IV treatment (at dose of 20 mg/kg) significantly improved the spatial learning and memory deficits assessed using the Morris water maze test in rats with chronic cerebral hypoperfusion. AS-IV significantly attenuated neuronal apoptosis as well as the levels of superoxide dismutase and lipid peroxidation markers, including malondialdehyde and 4-hydroxy-2-nonenal, in the hippocampus. AS-IV also significantly reduced 8-hydroxy-2’-deoxyguanosine expression, a maker of oxidative DNA damage, while significantly inhibited the astrocyte and microglia activation in the hippocampus. The results indicate that AS-IV has therapeutic potential for the prevention of dementia caused by cerebral hypoperfusion and suggest that the ameliorating effect of AS-IV on learning and memory deficits might be the result of suppressing neuronal apoptosis and oxidative damage in the hippocampus.
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Affiliation(s)
- Sooyong Kim
- Department of East-West Medical Science, Graduate School of East-West Medical Science, Kyung Hee University, Yongin 446-701, Korea.
| | - Il-Hwan Kang
- Department of East-West Medical Science, Graduate School of East-West Medical Science, Kyung Hee University, Yongin 446-701, Korea.
| | - Jung-Bum Nam
- Department of East-West Medical Science, Graduate School of East-West Medical Science, Kyung Hee University, Yongin 446-701, Korea.
| | - Yoonchul Cho
- Department of East-West Medical Science, Graduate School of East-West Medical Science, Kyung Hee University, Yongin 446-701, Korea.
| | - Doo-Young Chung
- Department of East-West Medical Science, Graduate School of East-West Medical Science, Kyung Hee University, Yongin 446-701, Korea.
| | - Seung-Hwan Kim
- Department of East-West Medical Science, Graduate School of East-West Medical Science, Kyung Hee University, Yongin 446-701, Korea.
| | - Jeong-Soo Kim
- Department of East-West Medical Science, Graduate School of East-West Medical Science, Kyung Hee University, Yongin 446-701, Korea.
| | - Yong-Deok Cho
- Department of East-West Medical Science, Graduate School of East-West Medical Science, Kyung Hee University, Yongin 446-701, Korea.
| | - Eun-Ki Hong
- Department of East-West Medical Science, Graduate School of East-West Medical Science, Kyung Hee University, Yongin 446-701, Korea.
| | - Nak-Won Sohn
- Department of East-West Medical Science, Graduate School of East-West Medical Science, Kyung Hee University, Yongin 446-701, Korea.
| | - Jung-Won Shin
- Department of East-West Medical Science, Graduate School of East-West Medical Science, Kyung Hee University, Yongin 446-701, Korea.
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25
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He YX, Du M, Shi HL, Huang F, Liu HS, Wu H, Zhang BB, Dou W, Wu XJ, Wang ZT. Astragalosides from Radix Astragali benefits experimental autoimmune encephalomyelitis in C57BL /6 mice at multiple levels. BMC COMPLEMENTARY AND ALTERNATIVE MEDICINE 2014; 14:313. [PMID: 25150364 PMCID: PMC4155103 DOI: 10.1186/1472-6882-14-313] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/09/2014] [Accepted: 08/20/2014] [Indexed: 12/03/2022]
Abstract
Background Radix Astragali is famous for its beneficial effect on inflammation associated diseases. This study was to assess the efficacy of astragalosides (AST) extracted from Radix Astragali, on the progression of experimental autoimmune encephalomyelitis (EAE), and explore its possible underlying molecular mechanisms. Methods EAE was induced by subcutaneous immunization of MOG35–55. Infiltration of inflammatory cells was examined by HE staining. ROS level was detected by measuring infiltrated hydroethidine. Leakage of blood brain barrier (BBB) was assessed using Evan’s blue dye extravasation method. Levels of inflammatory cytokines were measured using ELISA kits. Activities of total-SOD, GSH-Px, and iNOS and MDA concentration were measured using biochemical analytic kits. Gene expression was detected using real-time PCR method. Protein expression was assayed using western blotting approach. Results AST administration attenuated the progression of EAE in mice remarkably. Further studies manifested that AST treatment inhibited infiltration of inflammatory cells, lessened ROS production and decreased BBB leakage. In peripheral immune-systems, AST up-regulated mRNA expression of transcriptional factors T-bet and Foxp3 but decreased that of RORγt to modulate T cell differentiation. In CNS, AST stopped BBB leakage, reduced ROS production by up-regulation of T-SOD, and reduced neuroinflammation by inhibition of iNOS and other inflammatory cytokines. Moreover, AST inhibited production of p53 and phosphorylation of tau by modulation of the Bcl-2/Bax ratio. Conclusions AST orchestrated multiple pathways, including immuno-regulation, anti-oxidative stress, anti-neuroinflammation and anti-neuroapoptosis involved in the MS pathogenesis, to prevent the deterioration of EAE, which paves the way for the application of it in clinical prevention/therapy of MS.
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26
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Ghasemi R, Zarifkar A, Rastegar K, Maghsoudi N, Moosavi M. Repeated intra-hippocampal injection of beta-amyloid 25–35 induces a reproducible impairment of learning and memory: Considering caspase-3 and MAPKs activity. Eur J Pharmacol 2014; 726:33-40. [DOI: 10.1016/j.ejphar.2013.11.034] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2013] [Revised: 11/27/2013] [Accepted: 11/27/2013] [Indexed: 12/29/2022]
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27
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Amyloidosis in Alzheimer's Disease: The Toxicity of Amyloid Beta (A β ), Mechanisms of Its Accumulation and Implications of Medicinal Plants for Therapy. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2013; 2013:413808. [PMID: 23762130 PMCID: PMC3671299 DOI: 10.1155/2013/413808] [Citation(s) in RCA: 51] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/09/2012] [Revised: 04/10/2013] [Accepted: 04/22/2013] [Indexed: 01/15/2023]
Abstract
Alzheimer's disease (AD) is a progressive neurodegenerative disorder that leads to memory deficits and death. While the number of individuals with AD is rising each year due to the longer life expectancy worldwide, current therapy can only somewhat relieve the symptoms of AD. There is no proven medication to cure or prevent the disease, possibly due to a lack of knowledge regarding the molecular mechanisms underlying disease pathogenesis. Most previous studies have accepted the “amyloid hypothesis,” in which the neuropathogenesis of AD is believed to be triggered by the accumulation of the toxic amyloid beta (Aβ) protein in the central nervous system (CNS). Lately, knowledge that may be critical to unraveling the hidden pathogenic pathway of AD has been revealed. This review concentrates on the toxicity of Aβ and the mechanism of accumulation of this toxic protein in the brain of individuals with AD and also summarizes recent advances in the study of these accumulation mechanisms together with the role of herbal medicines that could facilitate the development of more effective therapeutic and preventive strategies.
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