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Li Y, Wei Z, Su L. Anti-aging effects of icariin and the underlying mechanisms: A mini-review. Aging Med (Milton) 2024; 7:90-95. [PMID: 38571677 PMCID: PMC10985774 DOI: 10.1002/agm2.12284] [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: 11/30/2023] [Revised: 01/02/2024] [Accepted: 01/04/2024] [Indexed: 04/05/2024] Open
Abstract
Aging is an extremely intricate and progressive phenomenon that is implicated in many physiological and pathological conditions. Icariin (ICA) is the main active ingredient of Epimedium and has exhibited multiple bioactivities, such as anti-tumor, neuroprotective, antioxidant, anti-inflammatory, and anti-aging properties. ICA could extend healthspan in both invertebrate and vertebrate models. In this review, the roles of ICA in protection from declined reproductive function, neurodegeneration, osteoporosis, aging intestinal microecology, and senescence of cardiovascular system will be summarized. Furthermore, the underlying mechanisms of ICA-mediated anti-aging effects will be introduced. Finally, we will discuss some key aspects that constrain the usage of ICA in clinical practice and the corresponding strategies to solve these issues.
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Affiliation(s)
- Ying Li
- Department of HematologyChangchun Central HospitalChangchunChina
| | - Zhi‐Feng Wei
- Department of HematologyThe First Hospital of Jilin UniversityChangchunChina
- Jilin Provincial Key Laboratory of Hematology Precision MedicineThe First Hospital of Jilin UniversityChangchunChina
| | - Long Su
- Department of HematologyThe First Hospital of Jilin UniversityChangchunChina
- Jilin Provincial Key Laboratory of Hematology Precision MedicineThe First Hospital of Jilin UniversityChangchunChina
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Taniguchi C, Watanabe T, Hirata M, Hatae A, Kubota K, Katsurabayashi S, Iwasaki K. Ninjinyoeito Prevents Onset of Depression-Like Behavior and Reduces Hippocampal iNOS Expression in Senescence-Accelerated Mouse Prone 8 Mice. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE : ECAM 2023; 2023:2151004. [PMID: 37593014 PMCID: PMC10432024 DOI: 10.1155/2023/2151004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/22/2023] [Revised: 07/27/2023] [Accepted: 08/01/2023] [Indexed: 08/19/2023]
Abstract
Late-life depression is a globally prevalent disorder. Ninjinyoeito (NYT), a traditional Japanese herbal medicine, attenuates depressive symptoms in older patients. However, the mechanisms underlying the antidepressive effect of NYT are unknown. In this study, we investigated the mechanism of the action of NYT using senescence-accelerated mouse prone 8 (SAMP8) mice, which exhibit accelerated aging. SAMP8 mice were treated with NYT starting at 12 weeks of age. Twelve-week-old SAMP8 mice did not show prolonged immobility time in the tail suspension test compared with age-matched SAMR1 mice (normal aging control). At 34 weeks of age, vehicle-treated SAMP8 mice displayed prolonged immobility time compared with SAMR1 mice. NYT-treated SAMP8 mice showed a shorter immobility time than that of vehicle-treated SAMP8 mice. Notably, NYT decreased hippocampal inducible nitric oxide synthase (iNOS) expression in SAMP8 mice. There was no difference in iNOS expression between SAMR1 and vehicle-treated SAMP8 mice. Subchronic (5 days) administration of an iNOS inhibitor, 1400 W, shortened the immobility time in SAMP8 mice. These results suggest that NYT prevents an increase in immobility time of SAMP8 mice by decreasing iNOS levels in the hippocampus. Therefore, the antidepressive effect of NYT in older patients might be mediated, at least in part, by the downregulation of iNOS in the brain. Our data suggest that NYT is useful to prevent the onset of depression with aging.
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Affiliation(s)
- Chise Taniguchi
- Department of Neuropharmacology, Faculty of Pharmaceutical Sciences, Fukuoka University, 8-19-1 Nanakuma, Jonan-ku, Fukuoka 814-0180, Japan
| | - Takuya Watanabe
- Department of Neuropharmacology, Faculty of Pharmaceutical Sciences, Fukuoka University, 8-19-1 Nanakuma, Jonan-ku, Fukuoka 814-0180, Japan
| | - Marika Hirata
- Department of Neuropharmacology, Faculty of Pharmaceutical Sciences, Fukuoka University, 8-19-1 Nanakuma, Jonan-ku, Fukuoka 814-0180, Japan
| | - Akinobu Hatae
- Department of Neuropharmacology, Faculty of Pharmaceutical Sciences, Fukuoka University, 8-19-1 Nanakuma, Jonan-ku, Fukuoka 814-0180, Japan
| | - Kaori Kubota
- Department of Neuropharmacology, Faculty of Pharmaceutical Sciences, Fukuoka University, 8-19-1 Nanakuma, Jonan-ku, Fukuoka 814-0180, Japan
| | - Shutaro Katsurabayashi
- Department of Neuropharmacology, Faculty of Pharmaceutical Sciences, Fukuoka University, 8-19-1 Nanakuma, Jonan-ku, Fukuoka 814-0180, Japan
| | - Katsunori Iwasaki
- Department of Neuropharmacology, Faculty of Pharmaceutical Sciences, Fukuoka University, 8-19-1 Nanakuma, Jonan-ku, Fukuoka 814-0180, Japan
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Jankowska A, Wesołowska A, Pawłowski M, Chłoń-Rzepa G. Multifunctional Ligands Targeting Phosphodiesterase as the Future Strategy for the Symptomatic and Disease-Modifying Treatment of Alzheimer’s Disease. Curr Med Chem 2020; 27:5351-5373. [DOI: 10.2174/0929867326666190620095623] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2018] [Revised: 04/30/2019] [Accepted: 05/06/2019] [Indexed: 02/06/2023]
Abstract
Alzheimer’s Disease (AD) is a chronic neurodegenerative disorder characterized by cognitive
impairments such as memory loss, decline in language skills, and disorientation that affects
over 46 million people worldwide. Patients with AD also suffer from behavioral and psychological
symptoms of dementia that deteriorate their quality of life and lead to premature death. Currently
available drugs provide modest symptomatic relief but do not reduce pathological hallmarks (senile
plaques and neurofibrillary tangles) and neuroinflammation, both of which are integral parts of dementia.
A large body of evidence indicates that impaired signaling pathways of cyclic-3′,5′-
Adenosine Monophosphate (cAMP) and cyclic-3′,5′-guanosine Monophosphate (cGMP) may contribute
to the development and progression of AD. In addition, Phosphodiesterase (PDE) inhibitors,
commonly known as cAMP and/or cGMP modulators, were found to be involved in the phosphorylation
of tau; aggregation of amyloid beta; neuroinflammation; and regulation of cognition, mood,
and emotion processing. The purpose of this review was to update the most recent reports on the
development of novel multifunctional ligands targeting PDE as potential drugs for both symptomatic
and disease-modifying therapy of AD. This review collected the chemical structures of representative
multifunctional ligands, results of experimental in vitro and in vivo pharmacological studies,
and current opinions regarding the potential utility of these compounds for the comprehensive
therapy of AD. Finally, the multiparameter predictions of drugability of the representative compounds
were calculated and discussed.
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Affiliation(s)
- Agnieszka Jankowska
- Department of Medicinal Chemistry, Jagiellonian University Medical College, 9 Medyczna Street, 30-688 Krakow, Poland
| | - Anna Wesołowska
- Department of Clinical Pharmacy, Jagiellonian University Medical College, 9 Medyczna Street, 30-688 Krakow, Poland
| | - Maciej Pawłowski
- Department of Medicinal Chemistry, Jagiellonian University Medical College, 9 Medyczna Street, 30-688 Krakow, Poland
| | - Grażyna Chłoń-Rzepa
- Department of Medicinal Chemistry, Jagiellonian University Medical College, 9 Medyczna Street, 30-688 Krakow, Poland
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Zhao JF, Xu JY, Xu YE, Chen SL, Guo YX, Gao QY, Sun GC. High-Throughput Metabolomics Method for Discovering Metabolic Biomarkers and Pathways to Reveal Effects and Molecular Mechanism of Ethanol Extract From Epimedium Against Osteoporosis. Front Pharmacol 2020; 11:1318. [PMID: 32973531 PMCID: PMC7481463 DOI: 10.3389/fphar.2020.01318] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2020] [Accepted: 08/07/2020] [Indexed: 11/24/2022] Open
Abstract
Metabolomics is an effective strategy to explore the molecular mechanism of herbal medicine. Epimedium, a traditional Chinese herb from the Epimedium brevicornu Maxim., has a therapeutic effect on osteoporosis (OP), however the molecular mechanism of the anti-OP effect is uncle\ar. Therefore, we investigated the pharmacological effect and action mechanism of ethanol extract of epimedium (Ext-epi) onOP rat model. The serum of OP rats was analyzed utilized UPLC-Q-TOF/MS metabolomics, and the potential biomarkers were screened and identified using multivariate data analysis systems and network databases. To further appraise the influence of Ext-epi on biological markers and metabolic pathways, and reveal the potential mechanism of Ext-epi on OP treatment. The results showed that 46 potential biomarkers were screened out and after intervention with Ext-epi extracts solution, 16 potential biomarkers were significantly recalled. Further pathway experiments showed that key pathway analysis include sarachidonic acid metabolism, glycerolphospholipid metabolism as potential targets which is related with the efficacy of Ext-epi protect against OP. These results explain the correlation between metabolites and molecular mechanisms, which is of great significance for understanding the intervention of Ext-epi on OP. In short, based on UPLC-Q-TOF/MS metabolomics may provide effective strategies for understanding the pathogenesis of diseases and evaluating the intervention effect of natural products.
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Affiliation(s)
- Jun-feng Zhao
- The Manual Orthopaedics, Henan Province Luoyang Orthopedic Thraumatological Hospital (Henan Provincal Orthopedic Hospital), Luoyang, China
| | - Jian-yu Xu
- The Tumor Hospital of Harbin Medical University, The Department of Radiation Oncology, The Affiliated Tumour Hospital of Harbin Medical University, Harbin, China
| | - Yi-er Xu
- The Research & Development Center of Harbin Pharmaceutical Group, The Laboratory of Pharmacology Quality Inspection & Pilotscale Experiment Workshop, Harbin, China
| | - Shui-lin Chen
- The Department of Orthopaedics, The Fourth Hospital Attached to Nanchang University, Nanchang, China
| | - Yan-xing Guo
- The Manual Orthopaedics, Henan Province Luoyang Orthopedic Thraumatological Hospital (Henan Provincal Orthopedic Hospital), Luoyang, China
| | - Quan-yang Gao
- The Manual Orthopaedics, Henan Province Luoyang Orthopedic Thraumatological Hospital (Henan Provincal Orthopedic Hospital), Luoyang, China
| | - Gui-cai Sun
- The First Affiliated Hospital of Nanchang University, Orthopaedics, Nanchang University, Nanchang, China
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Bao Z, Zhang P, Chen J, Gao J, Lin S, Sun N. Egg yolk phospholipids reverse scopolamine–induced spatial memory deficits in mice by attenuating cholinergic damage. J Funct Foods 2020. [DOI: 10.1016/j.jff.2020.103948] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
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Icariin Ameliorates Amyloid Pathologies by Maintaining Homeostasis of Autophagic Systems in Aβ1–42-Injected Rats. Neurochem Res 2019; 44:2708-2722. [DOI: 10.1007/s11064-019-02889-z] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2019] [Revised: 09/26/2019] [Accepted: 10/03/2019] [Indexed: 12/22/2022]
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Chou MY, Chen YJ, Lin LH, Nakao Y, Lim AL, Wang MF, Yong SM. Protective Effects of Hydrolyzed Chicken Extract (Probeptigen®/Cmi-168) on Memory Retention and Brain Oxidative Stress in Senescence-Accelerated Mice. Nutrients 2019; 11:E1870. [PMID: 31408929 PMCID: PMC6722682 DOI: 10.3390/nu11081870] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2019] [Revised: 08/02/2019] [Accepted: 08/06/2019] [Indexed: 02/07/2023] Open
Abstract
The senescence-accelerated prone (SAMP8) mouse model shows age-dependent deterioration in learning and memory and increased oxidative stress in the brain. We previously showed that healthy subjects on a six-week supplementation of a chicken meat hydrolysate (ProBeptigen®/CMI-168) demonstrated enhanced and sustained cognitive performance up until two weeks after the termination of supplementation. In this study, we investigate the effect of ProBeptigen on the progression of age-related cognitive decline. Three-month old SAMP8 mice were orally administered different doses of ProBeptigen (150,300 or 600 mg/kg/day) or saline daily for 13 weeks. Following ProBeptigen supplementation, mice showed lower scores of senescence and improved learning and memory in avoidance tasks. ProBeptigen treatment also increased antioxidant enzyme activity and dopamine level while reducing protein and lipid peroxidation and mitochondrial DNA damage in the brain. Microarray analysis of hippocampus revealed several processes that may be involved in the improvement of cognitive ability by ProBeptigen, including heme binding, insulin growth factor (IGF) regulation, carboxylic metabolic process, oxidation-reduction process and endopeptidase inhibition. Genes found to be significantly altered in both ProBeptigen treated male and female mice include Mup1, Mup17, Mup21, Ahsg and Alb. Taken together, these results suggest a potential anti-aging effect of ProBeptigen in alleviating cognitive deficits and promoting the antioxidant defense system.
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Affiliation(s)
- Ming-Yu Chou
- Department of Food and Nutrition, Providence University, Taichung 43301, Taiwan
- Quanzhou Preschool Education College, Quanzhou 362000, China
| | - Ying-Ju Chen
- Department of Food and Nutrition, Providence University, Taichung 43301, Taiwan
| | - Liang-Hung Lin
- Department of Food and Nutrition, Providence University, Taichung 43301, Taiwan
| | - Yoshihiro Nakao
- Scientific Research and Applications, BRAND'S Suntory Asia, Singapore 048423, Singapore
| | - Ai Lin Lim
- Scientific Research and Applications, BRAND'S Suntory Asia, Singapore 048423, Singapore
| | - Ming-Fu Wang
- Department of Food and Nutrition, Providence University, Taichung 43301, Taiwan.
| | - Shan May Yong
- Scientific Research and Applications, BRAND'S Suntory Asia, Singapore 048423, Singapore.
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Zhu T, Zhang F, Li H, He Y, Zhang G, Huang N, Guo M, Li X. Long-term icariin treatment ameliorates cognitive deficits via CD4 + T cell-mediated immuno-inflammatory responses in APP/PS1 mice. Clin Interv Aging 2019; 14:817-826. [PMID: 31190768 PMCID: PMC6511656 DOI: 10.2147/cia.s208068] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2019] [Accepted: 04/15/2019] [Indexed: 12/13/2022] Open
Abstract
Background: Alzheimer’s disease (AD) is the most common neurodegenerative disorder that also involves neuroinflammation in addition to many other features. Icariin (ICA) as one of the active ingredients of Chinese herbal medicine has the immunomodulating function. This study aimed to investigate the immunotherapeutic potential of ICA on AD. Methods: APP/PS1 mice and wild type C57BL/6 mice were subjected to orally ICA administration (60 mg/kg/d) for 8 months. Then, the ethological and biochemical experiments, such as Morris water maze assay, Aβ ELISA, blood T cell flow cytometry, and plasma and brain cytokines array, were conducted to evaluate the effects of ICA administration. Results: ICA significantly improved spatial learning and memory retention in APP/PS1 mice. Long-term application of ICA could also reduce hippocampus Aβ deposition, modulate the differentiation of CD4+ T cells, and modulate the release of inflammatory cytokines in plasma and brain tissue. Conclusion: ICA shows the neuroprotective effects via modulating the CD4+ T lymphocyte-related immuno-inflammatory responses in APP/PS1 mice and may be a promising drug against AD progression.
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Affiliation(s)
- Tianrui Zhu
- Department of Neurology, Jinan Central Hospital Affiliated to Shandong University, Jinan, Shandong 250013, People's Republic of China
| | - Feng Zhang
- Department of Neurology, Jinan Central Hospital Affiliated to Shandong University, Jinan, Shandong 250013, People's Republic of China
| | - Heng Li
- Department of Neurology, Jinan Central Hospital Affiliated to Shandong University, Jinan, Shandong 250013, People's Republic of China
| | - Yi He
- Department of Neurology, The Second Affiliated Hospital of Xi'an Medical University, Xi'an, Shaanxi 710021, People's Republic of China
| | - Guitao Zhang
- Department of Neurology, Jinan Central Hospital Affiliated to Shandong University, Jinan, Shandong 250013, People's Republic of China
| | - Nana Huang
- Department of Neurology, Jinan Central Hospital Affiliated to Shandong University, Jinan, Shandong 250013, People's Republic of China
| | - Mingming Guo
- Department of Breast Surgery, The Second Hospital of Shandong University, Jinan, Shandong 250033, People's Republic of China
| | - Xiaohong Li
- Department of Neurology, Jinan Central Hospital Affiliated to Shandong University, Jinan, Shandong 250013, People's Republic of China
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Dutta S, Mahalanobish S, Saha S, Ghosh S, Sil PC. Natural products: An upcoming therapeutic approach to cancer. Food Chem Toxicol 2019; 128:240-255. [PMID: 30991130 DOI: 10.1016/j.fct.2019.04.012] [Citation(s) in RCA: 155] [Impact Index Per Article: 31.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2019] [Revised: 04/08/2019] [Accepted: 04/09/2019] [Indexed: 12/28/2022]
Abstract
Cancer is one of the leading causes of death across the world. Different environmental and anthropogenic factors initiate mutations in different functional genes of growth factors and their receptors, anti-apoptotic proteins, self-renewal developmental proteins, tumor suppressors, transcription factors, etc. This phenomenon leads to altered protein homeostasis of the cell which in turn induces cancer initiation, development, progression and survival. From ancient times various natural products have been used as traditional medicine against different diseases. Natural products are readily applicable, inexpensive, accessible and acceptable therapeutic approach with minimum cytotoxicity. As most of the target-specific anticancer drugs failed to achieve the expected result so far, new multi-targeted therapies using natural products have become significant. In this review, we have summarized the efficacy of different natural compounds against cancer. They are capable of modulating cancer microenvironment and diverse cell signaling cascades; thus playing a major role in combating cancer. These compounds are found to be effective against several signaling pathways, mainly cell death pathways (apoptosis and autophagy) and embryonic developmental pathways (Notch pathway, Wnt pathway and Hedgehog pathway). This review article is expected to be helpful in understanding the recent progress of natural product research for the development of anticancer drug.
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Affiliation(s)
- Sayanta Dutta
- Division of Molecular Medicine, Bose Institute, P-1/12, CIT Scheme VII M, Kolkata 700054, India
| | - Sushweta Mahalanobish
- Division of Molecular Medicine, Bose Institute, P-1/12, CIT Scheme VII M, Kolkata 700054, India
| | - Sukanya Saha
- Division of Molecular Medicine, Bose Institute, P-1/12, CIT Scheme VII M, Kolkata 700054, India
| | - Shatadal Ghosh
- Division of Molecular Medicine, Bose Institute, P-1/12, CIT Scheme VII M, Kolkata 700054, India
| | - Parames C Sil
- Division of Molecular Medicine, Bose Institute, P-1/12, CIT Scheme VII M, Kolkata 700054, India.
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Effects of Resveratrol on the Mechanisms of Antioxidants and Estrogen in Alzheimer's Disease. BIOMED RESEARCH INTERNATIONAL 2019; 2019:8983752. [PMID: 31016201 PMCID: PMC6446083 DOI: 10.1155/2019/8983752] [Citation(s) in RCA: 86] [Impact Index Per Article: 17.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/01/2018] [Revised: 01/31/2019] [Accepted: 02/17/2019] [Indexed: 11/21/2022]
Abstract
Objective To observe the effects of resveratrol (Res) on the antioxidative function and estrogen level in an Alzheimer's disease (AD) mouse model. Methods First, we examined the effects of Res on an AD mice model. SAMP8 mice were selected as the model, and normal-aging SAMR1 mice were used as the control group. The model mice were randomly divided into three groups: a model group, high-dose Res group (40mg/kg, intraperitoneal (ip)), and low-dose Res group (20mg/kg, ip). After receiving medication for 15 days, the mice were subjected to the water maze test to assess their spatial discrimination. The spectrophotometric method was used to detect the activity of superoxide dismutase (SOD), glutathione peroxidase (GSH-Px), and catalase (CAT) as well as the malondialdehyde (MDA) content. Quantitative PCR (q-PCR) was used to detect SOD, GSH-Px, CAT, and heme oxygenase-1 (HO-1) mRNA level changes. Western blot analysis detected HO-1 and Nrf2 protein expression. Second, we researched the effect of Res on the estrogen level in the SAMP8 model mice. The model mice were randomly divided into four groups: a model group, estrogen replacement group (0.28 mg/kg, intramuscular (im), estradiol benzoate), high-dose Res group (5 mg/kg, im), and low-dose Res group (2.5 mg/kg, im). The mice were injected, once every three days, for 5 weeks. Q-PCR was used to detect brain tissue mRNA expression changes. Western blot analysis detected ERα, ERβ, and ChAT protein expression. An enzyme-linked immunosorbent assay (ELISA) kit was used to detect the expression of E2 and amyloid β protein (Aβ) in brain tissue. Results Compared with the control treatment, Res could improve the spatial abilities of the mice to a certain extent and also increase the expression of SOD, GSH-Px, CAT, and HO-1 at the mRNA level (P<0.05). In addition, enhanced SOD, GSH-Px, and CAT activities and HO-1 protein levels and decreased MDA content (P<0.05) were detected in the brain tissue of the Res-treated mice. The cytoplasmic Nrf2 content in the Res-treated mice was also decreased while the nuclear Nrf2 content and the nuclear translation rate of Nrf2 were increased (P<0.05). Res could decrease the expression of ERβ in the brain tissue at the mRNA and protein levels and the expression of Aβ in the brain tissue at the protein level. Res could also increase the mRNA and protein expression of ERα and ChAT and the protein expression of estradiol in the brain tissue. Conclusion Res can increase the antioxidant capacity of AD models through the Nrf2/HO-1 signaling pathway. In addition, Res can enhance estrogen levels in an AD model. These findings provide a new idea for the treatment of AD.
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Chen FJ, Liu B, Wu Q, Liu J, Xu YY, Zhou SY, Shi JS. Icariin Delays Brain Aging in Senescence-Accelerated Mouse Prone 8 (SAMP8) Model via Inhibiting Autophagy. J Pharmacol Exp Ther 2019; 369:121-128. [PMID: 30837279 DOI: 10.1124/jpet.118.253310] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2018] [Accepted: 02/06/2019] [Indexed: 11/22/2022] Open
Abstract
Icariin (ICA), a major flavonoid extracted from the Chinese tonic herb Epimedium, exerts beneficial effects in a variety of age-dependent diseases, such as Alzheimer's disease (AD). However, the antiaging mechanisms remain unclear. The senescence-accelerated mouse-prone 8 (SAMP8) model has been used to study age-related neurodegenerative changes associated with aging and the pathogenesis of AD. Hence, the current study was designed to examine the effect of ICA on age-related cognitive decline in SAMP8 mice and explore the role of autophagy in the ICA-mediated neuroprotection. SAMP8 mice were administered with ICA starting at 5 months of age, and the treatment lasted for 3 consecutive months. Morris water maze was used to evaluate cognitive function. The senescence-associated β-galactosidase staining was used to determine the number of senescence cells. The neuronal morphologic changes were examined via Nissl staining. The hippocampal neuronal ultrastructure was examined by transmission electron microscopy. The expression of autophagy protein was examined by Western blot. ICA-treated SAMP8 mice exhibited a robust improvement in spatial learning and memory function. Meanwhile, ICA reduced the number of senescence cells in the brains of SAMP8 mice, inhibited neuronal loss, and reversed neuronal structural changes in the hippocampi of SAMP8 mice. Moreover, ICA treatment also decreased the formation of autophagosomes in the hippocampus of SAMP8 mice, and reduced the expression of autophagy-related proteins LC3-II and p62. These results demonstrate that ICA possesses the ability to delay brain aging in SAMP8 mice, and the mechanisms are possibly mediated through the regulation of autophagy.
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Affiliation(s)
- Fa-Ju Chen
- Key Laboratory of Basic Pharmacology of Ministry of Education and Joint International Research Laboratory of Ethnomedicine of Ministry of Education, Zunyi Medical University, Zunyi, People's Republic of China
| | - Bo Liu
- Key Laboratory of Basic Pharmacology of Ministry of Education and Joint International Research Laboratory of Ethnomedicine of Ministry of Education, Zunyi Medical University, Zunyi, People's Republic of China
| | - Qin Wu
- Key Laboratory of Basic Pharmacology of Ministry of Education and Joint International Research Laboratory of Ethnomedicine of Ministry of Education, Zunyi Medical University, Zunyi, People's Republic of China
| | - Jie Liu
- Key Laboratory of Basic Pharmacology of Ministry of Education and Joint International Research Laboratory of Ethnomedicine of Ministry of Education, Zunyi Medical University, Zunyi, People's Republic of China
| | - Yun-Yan Xu
- Key Laboratory of Basic Pharmacology of Ministry of Education and Joint International Research Laboratory of Ethnomedicine of Ministry of Education, Zunyi Medical University, Zunyi, People's Republic of China
| | - Shao-Yu Zhou
- Key Laboratory of Basic Pharmacology of Ministry of Education and Joint International Research Laboratory of Ethnomedicine of Ministry of Education, Zunyi Medical University, Zunyi, People's Republic of China
| | - Jing-Shan Shi
- Key Laboratory of Basic Pharmacology of Ministry of Education and Joint International Research Laboratory of Ethnomedicine of Ministry of Education, Zunyi Medical University, Zunyi, People's Republic of China
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Zhao C, Zhang C, Xing Z, Ahmad Z, Li JS, Chang MW. Pharmacological effects of natural Ganoderma and its extracts on neurological diseases: A comprehensive review. Int J Biol Macromol 2019; 121:1160-1178. [DOI: 10.1016/j.ijbiomac.2018.10.076] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2018] [Revised: 10/06/2018] [Accepted: 10/14/2018] [Indexed: 01/13/2023]
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Jin J, Wang H, Hua X, Chen D, Huang C, Chen Z. An outline for the pharmacological effect of icariin in the nervous system. Eur J Pharmacol 2018; 842:20-32. [PMID: 30342950 DOI: 10.1016/j.ejphar.2018.10.006] [Citation(s) in RCA: 73] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2018] [Revised: 09/13/2018] [Accepted: 10/09/2018] [Indexed: 12/13/2022]
Abstract
Icariin is a major active component of the traditional herb Epimedium, also known as Horny Goat Weed. It has been extensively studied throughout the past several years and is known to exert anti-oxidative, anti-neuroinflammatory, and anti-apoptotic effects. It is now being considered as a potential therapeutic agent for a wide variety of disorders, ranging from neoplasm to cardiovascular disease. More recent studies have shown that icariin exhibits potential preventive and/or therapeutic effects in the nervous system. For example, icariin can prevent the production of amyloid β (1-42) and inhibit the expression of amyloid precursor protein (APP) and β-site APP cleaving enzyme 1 (BACE-1) in animal models of Alzheimer's disease (AD). Icariin has been shown to mitigate pro-inflammatory responses of microglia in culture and in animal models of cerebral ischemia, depression, Parkinson's disease (PD), and multiple sclerosis (MS). Icariin also prevents the neurotoxicity induced by hydrogen peroxide (H2O2), endoplasmic reticulum (ER) stress, ibotenic acid, and homocysteine. In addition, icariin is implicated in facilitating learning and memory in both normal aging animals and disease models. To date, we still have no consolidated source of knowledge about the pharmacological effects of icariin in the nervous system, though its roles in other tissues have been reviewed in recent years. Here, we summarize the pharmacological development of icariin as well as its possible mechanisms in prevention and/or therapy of disorders afflicting the nervous system in hope of expanding the knowledge about the preventive and/or therapeutic effect of icariin in brain disorders.
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Affiliation(s)
- Jie Jin
- Invasive Technology Department, Nantong First People's Hospital, the Second Affiliated Hospital of Nantong University, #6 North Road Hai'er Xiang, Nantong, Jiangsu 226001, China
| | - Hui Wang
- Department of Pharmacology, School of Pharmacy, Nantong University, #19 Qixiu Road, Nantong 226001, Jiangsu, China; Department of Neuroscience & Cell Biology, Rutgers-Robert Wood Johnson Medical School, 675 Hoes lane, Piscataway, 08854 New Jersey, United States
| | - Xiaoying Hua
- Department of Pharmacology, Wuxi Ninth People's Hospital, #999 Liangxi Road, Wu xi, Jiangsu 226001, China
| | - Dongjian Chen
- Invasive Technology Department, Nantong First People's Hospital, the Second Affiliated Hospital of Nantong University, #6 North Road Hai'er Xiang, Nantong, Jiangsu 226001, China
| | - Chao Huang
- Department of Pharmacology, School of Pharmacy, Nantong University, #19 Qixiu Road, Nantong 226001, Jiangsu, China
| | - Zhuo Chen
- Invasive Technology Department, Nantong First People's Hospital, the Second Affiliated Hospital of Nantong University, #6 North Road Hai'er Xiang, Nantong, Jiangsu 226001, China.
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Falls N, Singh D, Anwar F, Verma A, Kumar V. Amelioration of neurodegeneration and cognitive impairment by Lemon oil in experimental model of Stressed mice. Biomed Pharmacother 2018; 106:575-583. [PMID: 29990845 DOI: 10.1016/j.biopha.2018.06.160] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2017] [Revised: 06/26/2018] [Accepted: 06/27/2018] [Indexed: 12/18/2022] Open
Abstract
Citrous lemon (Rutaceae) an Indian folk medicine has been used for the treatment of various pathological diseases viz., diabetes, cardiovascular, inflammation, hepatobiliary dysfunction and neurodegenerative disorder. Can lemon oil altered the memory of unstressed and stressed mice, a basic question for which the present work was put on trial. The present investigation was intended to assess the impact of Lemon oil on memory of unstressed and Stressed Swiss young Albino mice. Lemon oil (50 and 100 mg/kg o.r.) and donepezil (10 mg/kg) were guided for three weeks to different groups of stressed and unstressed mice. The nootropic movement was assessed utilizing elevated plus maze and Hebbs Williams Maze. Cerebrum acetylcholinesterase (AChE), plasmacorticosterone, decreased glutathione, lipid per oxidation alongside superoxide dismutase and catalase was surveyed as marker for disease. Histopathology was performed for estimation of drug effects. Acute immobilized stress was induce, lemon oil (100 mg/kg) and donepezil together indicated memory enhancing movement both in stressed and unstressed mice. Lemon oil significantly (p < 0.001) altered and lowered brain AChE activity both in stressed and unstressed mice. Scopolamine induced amnesia was also significantly altered and reversed both in stressed and unstressed mice by lemon oil at a dose of 50 and 100 mg/kg. Lemon oil (50 and 100 mg/kg) was further able to control the corticosterone level in plasma for stressed mice. Lemon oil significantly (p < 0.001) elevated the level of catalase, superoxide dismutase and reduced glutathione levels both in stressed and unstressed animals with respect to controlled group along with TBARS both in stressed and unstressed compared with control group. Hence it can be concluded that memory enhancing activity might be related to reduction in AChE and TBARS activity and by elevated GSH, SOD and catalase through decrease in raised plasma corticosterone levels.
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Affiliation(s)
- Neha Falls
- Natural Product Drug Discovery Laboratory, Department of Pharmaceutical Sciences, Faculty of Health Sciences, Sam Higginbottom University of Agriculture, Technology & Sciences, Allahabad, Uttar Pradesh, 211007, India
| | - Deepika Singh
- Department of Pharmaceutical Science, Faculty of Health Sciences, Sam Higginbottom University of Agriculture, Technology and Sciences, Allahabad, 211007, India
| | - Firoz Anwar
- Department of Biochemistry, King Abdulaziz University, Jeddah, 21589, Saudi Arabia
| | - Amita Verma
- Bio-organic & Medicinal Chemistry Research Laboratory, Department of Pharmaceutical Sciences, Faculty of Health Sciences, Sam Higginbottom University of Agriculture, Technology & Sciences, Allahabad, 211007, Uttar Pradesh, India
| | - Vikas Kumar
- Natural Product Drug Discovery Laboratory, Department of Pharmaceutical Sciences, Faculty of Health Sciences, Sam Higginbottom University of Agriculture, Technology & Sciences, Allahabad, Uttar Pradesh, 211007, India.
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Ren XS, Ding W, Yang XY. [Icariin alleviates lipid peroxidation after spinal cord injury in rats]. NAN FANG YI KE DA XUE XUE BAO = JOURNAL OF SOUTHERN MEDICAL UNIVERSITY 2018; 38:711-715. [PMID: 29997094 PMCID: PMC6765710 DOI: 10.3969/j.issn.1673-4254.2018.06.11] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 03/05/2018] [Indexed: 06/08/2023]
Abstract
OBJECTIVE To assess the effects of intragastric administration of icariin on lipid peroxidation after spinal cord injury in rats. METHODS Seventy-two healthy adult male SD rats were randomized equally into icariin group, control group and sham-operated group. In the control and icariin groups, spinal cord injury was induced using modified Allen's method, and the rats in the sham-operated group underwent laminotomy without damaging the spinal cord. Immediately after the surgery, the rats in icariin group were subjected to intragastric administration of icariin (100 mg/kg), and those in the control and sham-operated groups received an equal volume of saline in the same manner once a day. At 24 h after the operation, malondialdehyde (MDA) content was detected using thiobarbituric acid method, superoxide dismutase (SOD) activity was measured with xanthine oxidase method, and the water content in the spinal cord was measured using dry-wet weight method. At 48 h after the operation, the ultrastructure of the spinal cord was observed with transmission electron microscopy and scored using Kaptanoglu scoring method. The motor function of the rats was assessed using BBB scoring at 7, 14, 21 and 28 days after the operation. RESULTS At 24 h after the operation, MDA content was significantly higher in the control group and icariin group than in the sham-operated group, and was significantly lower in icariin group than in the control group (P<0.05); SOD activity was significantly higher in icariin group than in the control group, and was both significantly lower than that in the sham-operated group (P<0.05). At 48 h after operation, the water content and ultrastructure score of the spinal cord were the highest in sham-operated group (P<0.05), and were significantly lower in icariin group than in the control group (P<0.05). At all the time points of measurement, the BBB scores were significantly lower in the control and icariin groups than in the sham-operated group (P<0.05), and were significantly higher in icariin group than in the control group (P<0.05). CONCLUSION Icariin can significantly reduce MDA content, increase SOD activity, and ameliorate lipid peroxidation, spinal cord edema, and histopathological damage of the spinal cord to improve motor function of rats with spinal cord injury.
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Affiliation(s)
- Xian-Sheng Ren
- Department of Orthopedics, Second Hospital of Jilin University, Changchun 130041, China. E-mail:
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Hou XQ, Song HP, Chen YB, Cheng SY, Fang SH, Zhang JG, Wang Q. Effects of Bushen-Yizhi formula on age-related inflammation and oxidative stress in senescence-accelerated mice. Mol Med Rep 2018; 17:6947-6960. [PMID: 29568888 PMCID: PMC5928649 DOI: 10.3892/mmr.2018.8736] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2016] [Accepted: 04/27/2017] [Indexed: 11/09/2022] Open
Abstract
The present study aimed to investigate the possible effects and underlying molecular mechanism of Bushen-Yizhi formula (BSYZ), a traditional Chinese medicine, on age-related degeneration of brain physiology in senescence-accelerated mouse prone 8 (SAMP8) mice. SAMP8 mice (age, 6 months) were administered BSYZ (1.46, 2.92 and 5.84 g/kg/day) for 30 days. Morris water maze and step-down tests demonstrated that BSYZ significantly improved memory impairments in SAMP8 mice. In addition, BSYZ significantly enhanced the expression levels of peroxisome proliferator-activated receptor-γ and B-cell lymphoma extra-large, and downregulated the expression levels of inflammatory mediators, glial fibrillary acidic protein, cyclooxygenase-2, nuclear factor-κB and interleukin-1β in the brain compared with untreated SAMP8 mice. Furthermore, BSYZ reversed disordered superoxide dismutase activity, malondialdehyde content and glutathione peroxidase activity, and ameliorated apoptosis and histological alterations. The present study indicated that BSYZ may attenuate cognitive impairment in SAMP8 mice, and modulate inflammation, oxidative stress and neuronal apoptosis. These results suggested that BSYZ may have the potential to be further developed into a therapeutic agent for protection against age-related neurodegenerative diseases.
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Affiliation(s)
- Xue-Qin Hou
- Institute of Pharmacology, Taishan Medical College, Tai'an, Shandong 271016, P.R. China
| | - Hou-Pan Song
- Hunan Provincial Key Laboratory of Diagnostics in Chinese Medicine, Hunan University of Chinese Medicine, Changsha, Hunan 410208, P.R. China
| | - Yun-Bo Chen
- Design, Measurement and Evaluation in Clinical Research Center, Institute of Clinical Pharmacology, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong 510405, P.R. China
| | - Shu-Yi Cheng
- Design, Measurement and Evaluation in Clinical Research Center, Institute of Clinical Pharmacology, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong 510405, P.R. China
| | - Shu-Huan Fang
- Design, Measurement and Evaluation in Clinical Research Center, Institute of Clinical Pharmacology, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong 510405, P.R. China
| | - Ji-Guo Zhang
- Institute of Pharmacology, Taishan Medical College, Tai'an, Shandong 271016, P.R. China
| | - Qi Wang
- Design, Measurement and Evaluation in Clinical Research Center, Institute of Clinical Pharmacology, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong 510405, P.R. China
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Wang JH, Cheng XR, Zhang XR, Wang TX, Xu WJ, Li F, Liu F, Cheng JP, Bo XC, Wang SQ, Zhou WX, Zhang YX. Neuroendocrine immunomodulation network dysfunction in SAMP8 mice and PrP-hAβPPswe/PS1ΔE9 mice: potential mechanism underlying cognitive impairment. Oncotarget 2018; 7:22988-3005. [PMID: 27049828 PMCID: PMC5029605 DOI: 10.18632/oncotarget.8453] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2016] [Accepted: 03/18/2016] [Indexed: 12/29/2022] Open
Abstract
Senescence-accelerated mouse prone 8 strain (SAMP8) and PrP-hAβPPswe/PS1ΔE9 (APP/PS1) mice are classic animal models of sporadic Alzheimer's disease and familial AD respectively. Our study showed that object recognition memory, spatial learning and memory, active and passive avoidance were deteriorated and neuroendocrine immunomodulation (NIM) network was imbalance in SAMP8 and APP/PS1 mice. SAMP8 and APP/PS1 mice had their own specific phenotype of cognition, neuroendocrine, immune and NIM molecular network. The endocrine hormone corticosterone, luteinizing hormone and follicle-stimulating hormone, chemotactic factor monocyte chemotactic protein-1, macrophage inflammatory protein-1β, regulated upon activation normal T cell expressed and secreted factor and eotaxin, pro-inflammatory factor interleukin-23, and the Th1 cell acting as cell immunity accounted for cognitive deficiencies in SAMP8 mice, while adrenocorticotropic hormone and gonadotropin-releasing hormone, colony stimulating factor granulocyte colony stimulating factor, and Th2 cell acting as humoral immunity in APP/PS1 mice. On the pathway level, chemokine signaling and T cell receptor signaling pathway played the key role in cognition impairments of two models, while cytokine-cytokine receptor interaction and natural killer cell mediated cytotoxicity were more important in cognitive deterioration of SAMP8 mice than APP/PS1 mice. This mechanisms of NIM network underlying cognitive impairment is significant for further understanding the pathogenesis of AD and can provide useful information for development of AD therapeutic drug.
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Affiliation(s)
- Jian-Hui Wang
- Department of Neuroimmunopharmacology, Beijing Institute of Pharmacology and Toxicology, Beijing, China.,State Key Laboratory of Toxicology and Medical Countermeasures, Beijing, China
| | - Xiao-Rui Cheng
- Department of Neuroimmunopharmacology, Beijing Institute of Pharmacology and Toxicology, Beijing, China.,State Key Laboratory of Toxicology and Medical Countermeasures, Beijing, China
| | - Xiao-Rui Zhang
- Department of Neuroimmunopharmacology, Beijing Institute of Pharmacology and Toxicology, Beijing, China.,State Key Laboratory of Toxicology and Medical Countermeasures, Beijing, China
| | - Tong-Xing Wang
- Department of Neuroimmunopharmacology, Beijing Institute of Pharmacology and Toxicology, Beijing, China.,State Key Laboratory of Toxicology and Medical Countermeasures, Beijing, China
| | - Wen-Jian Xu
- Department of Biotechnology, Beijing Institute of Radiation Medicine, Beijing, China
| | - Fei Li
- Department of Biotechnology, Beijing Institute of Radiation Medicine, Beijing, China
| | - Feng Liu
- Department of Neuroimmunopharmacology, Beijing Institute of Pharmacology and Toxicology, Beijing, China.,State Key Laboratory of Toxicology and Medical Countermeasures, Beijing, China
| | - Jun-Ping Cheng
- Department of Neuroimmunopharmacology, Beijing Institute of Pharmacology and Toxicology, Beijing, China.,State Key Laboratory of Toxicology and Medical Countermeasures, Beijing, China
| | - Xiao-Chen Bo
- Department of Biotechnology, Beijing Institute of Radiation Medicine, Beijing, China
| | - Sheng-Qi Wang
- Department of Biotechnology, Beijing Institute of Radiation Medicine, Beijing, China
| | - Wen-Xia Zhou
- Department of Neuroimmunopharmacology, Beijing Institute of Pharmacology and Toxicology, Beijing, China.,State Key Laboratory of Toxicology and Medical Countermeasures, Beijing, China
| | - Yong-Xiang Zhang
- Department of Neuroimmunopharmacology, Beijing Institute of Pharmacology and Toxicology, Beijing, China.,State Key Laboratory of Toxicology and Medical Countermeasures, Beijing, China
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Traditional Chinese medicinal herbs as potential AChE inhibitors for anti-Alzheimer’s disease: A review. Bioorg Chem 2017; 75:50-61. [DOI: 10.1016/j.bioorg.2017.09.004] [Citation(s) in RCA: 69] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2017] [Revised: 09/01/2017] [Accepted: 09/05/2017] [Indexed: 12/29/2022]
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19
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Mo ZT, Li WN, Zhai YR, Gao SY. The effects of icariin on the expression of HIF-1α, HSP-60 and HSP-70 in PC12 cells suffered from oxygen-glucose deprivation-induced injury. PHARMACEUTICAL BIOLOGY 2017; 55:848-852. [PMID: 28140748 PMCID: PMC6130580 DOI: 10.1080/13880209.2017.1281968] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/31/2016] [Revised: 10/22/2016] [Accepted: 01/10/2017] [Indexed: 06/06/2023]
Abstract
CONTEXT The effects of icariin, a chief constituent of flavonoids from Epimedium brevicornum Maxim (Berberidaceae), on the levels of HIF-1α, HSP-60 and HSP-70 remain unknown. OBJECTIVE To explore the effects of icariin on the levels of HSP-60, HIF-1α and HSP-70 neuron-specific enolase (NSE) and cell viability. MATERIALS AND METHODS PC12 cells were treated with icariin (10-7, 10-6 or 10-5 mol/L) for 3 h (1 h before oxygen-glucose deprivation (OGD) plus 2 h OGD). HSP-60, HIF-1α, HSP-70 and NSE were measured using enzyme-linked immunosorbent assay (ELISA). Cell viability was determined by metabolic 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay. RESULTS After 2 h OGD, levels of HIF-1α, HSP-60, HSP-70 and NSE were increased significantly (HIF-1α: 33.3 ± 1.9 ng/L, HSP-60: 199 ± 16 ng/L, HSP-70: 195 ± 17 ng/L, NSE: 1487 ± 125 ng/L), and cell viability was significantly decreased (0.26 ± 0.03), while icariin (10-7, 10-6, or 10-5 mol/L) significantly reduced the contents of HIF-1α, HSP-60, HSP-70 and NSE (HIF-1α: 14.1 ± 1.4, 22.6 ± 1.8, 15.7 ± 2.1, HSP-60: 100 ± 12, 89 ± 6, 113 ± 11, HSP-70: 139 ± 9, 118 ± 7, 95 ± 9 and NSE: 1121 ± 80, 1019 ± 52, 731 ± 88), and improved cell viability (0.36 ± 0.03, 0.38 ± 0.04, 0.37 ± 0.03) in OGD-treated PC12 cells. DISCUSSION AND CONCLUSION These results indicate that the protective mechanisms of icariin against OGD-induced injury may be related to down-regulating the expression of HIF-1α, HSP-60 and HSP-70.
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Affiliation(s)
- Zhen-Tao Mo
- Department of Pharmacology of Zhuhai Campus, Zunyi Medical University, Zhuhai, Guangdong, China
| | - Wen-Na Li
- Department of Pharmacology of Zhuhai Campus, Zunyi Medical University, Zhuhai, Guangdong, China
| | - Yu-Rong Zhai
- Department of Pharmacology of Zhuhai Campus, Zunyi Medical University, Zhuhai, Guangdong, China
| | - Shu-Ying Gao
- Department of Pharmacology of Zhuhai Campus, Zunyi Medical University, Zhuhai, Guangdong, China
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Bakhtiari M, Panahi Y, Ameli J, Darvishi B. Protective effects of flavonoids against Alzheimer's disease-related neural dysfunctions. Biomed Pharmacother 2017. [PMID: 28641164 DOI: 10.1016/j.biopha.2017.06.010] [Citation(s) in RCA: 54] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Senile ages of human life is mostly associated with developmental of several neurological complicated conditions including decreased cognition and reasoning, increased memory loss and impaired language performance. Alzheimer's disease (AD) is the most prevalent neural disorder associated with dementia, consisting of about 70% of dementia reported cases. Failure of currently approved chemical anti-AD therapeutic agents has once again brought up the idea of administering naturally occurring compounds as effective alternative and/or complementary regimens in AD treatment. Polyphenol structured neuroprotecting agents are group of biologically active compounds abundantly found in plants with significant protecting effects against neural injuries and degeneration. As a subclass of this family, Flavonoids are potent anti-oxidant, anti-inflammatory and signalling pathways modulatory agents. Phosphatidylinositol 3-kinase (PI3K)/AKT and mitogen activated protein kinase (MAPK) pathways are both affected by Flavonoids. Regulation of pro-survival transcription factors and induction of specific genes expression in hippocampus are other important anti AD therapeutic activities of Flavonoids. These agents are also capable of inhibiting specific enzymes involved in phosphorylation of tau proteins including β-secretases, cyclin dependent kinase 5 and glycogen synthase. Other significant anti AD effects of Flavonoids include neural rehabilitation and lost cognitive performance recovery. In this review, first we briefly describe the pathophysiology and important pathways involved in pathology of AD and then describe the most important mechanisms through which Flavonoids demonstrate their significant neuroprotective effects in AD therapy.
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Affiliation(s)
- Mahsa Bakhtiari
- Department of Clinical Pharmacy, Faculty of Pharmacy, Pharmaceutical Science Branch, Islamic Azad University, IAUPS, Tehran, Iran
| | - Yunes Panahi
- Chemical Injuries Research Center, Baghiatallah University of Medical Science, Tehran, Iran
| | - Javad Ameli
- Department of Neurology, Baghiatallah University of Medical Science, Tehran, Iran
| | - Behrad Darvishi
- Recombinant Proteins Department, Breast Cancer Research Center, Motamed Cancer Institute, ACECR, Tehran, Iran.
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Cho JH, Jung JY, Lee BJ, Lee K, Park JW, Bu Y. Epimedii Herba: A Promising Herbal Medicine for Neuroplasticity. Phytother Res 2017; 31:838-848. [PMID: 28382688 DOI: 10.1002/ptr.5807] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2016] [Revised: 02/27/2017] [Accepted: 03/02/2017] [Indexed: 01/21/2023]
Abstract
Epimedii Herba (EH) is an herbal medicine originating from several plants of the genus Epimedium. It is a major therapeutic option for kidney yang deficiency syndrome, which is closely related to androgen hormones and also has been used to treat hemiplegia following a stroke in traditional medicine of Korea and PR China. To date, many clinical and basic researches of EH have shown the activities on functional recovery from brain diseases. Recently, neuroplasticity, which is the spontaneous reaction of the brain in response to diseases, has been shown to accelerate functional recovery. In addition, androgen hormones including testosterone are known to be the representative of neuroplasticity factors in the brain recovery processes. In this review, we described the neuro-pharmacological activities of EH, focusing on neuroplasticity. Thirty-three kinds of papers from MEDLINE/PubMed, EMBASE, and CNKI were identified and analyzed. We categorized the results into five types based on neuroplasticity mechanisms and presented the definition of each category and briefly described the results of these papers. Altogether, we can suggest that neuroplasticity is a novel viewpoint for guiding future brain research of EH and provide the evidence for the development of new clinical applications using EH in the treatment of brain diseases. Copyright © 2017 John Wiley & Sons, Ltd.
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Affiliation(s)
- Jae-Heung Cho
- College of Korean Medicine, Kyung Hee University, Seoul, Korea
| | - Jae-Young Jung
- College of Korean Medicine, Kyung Hee University, Seoul, Korea
| | - Beom-Joon Lee
- College of Korean Medicine, Kyung Hee University, Seoul, Korea
| | - Kyungjin Lee
- College of Korean Medicine, Kyung Hee University, Seoul, Korea
| | - Jae-Woo Park
- College of Korean Medicine, Kyung Hee University, Seoul, Korea
| | - Youngmin Bu
- College of Korean Medicine, Kyung Hee University, Seoul, Korea
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Chen WF, Wu L, Du ZR, Chen L, Xu AL, Chen XH, Teng JJ, Wong MS. Neuroprotective properties of icariin in MPTP-induced mouse model of Parkinson's disease: Involvement of PI3K/Akt and MEK/ERK signaling pathways. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2017; 25:93-99. [PMID: 28190476 DOI: 10.1016/j.phymed.2016.12.017] [Citation(s) in RCA: 82] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/20/2015] [Revised: 12/15/2016] [Accepted: 12/28/2016] [Indexed: 06/06/2023]
Abstract
BACKGROUND Epimedium sagittatum is a traditional Chinese herb normally which is used to treat the osteoporosis, cardiovascular dysfunction, and to improve neurological and sexual function in China, Korea and Japan. Icariin is the major active ingredient in Epimedium sagittatum. In the present research, we examined the neuroprotective effects of icariin on dopaminergic neurons and the possible mechanisms in a mouse model of Parkinson's disease (PD). METHODS Ovariectomized PD mice were treated with vehicle or icariin (3 days before MPTP injections) with or without the phosphatidylinositol 3-kinase (PI3K) inhibitor LY294002 or mitogen-activated protein kinase kinase (MEK) inhibitor PD98059. The dopamine (DA) content in the striatum was studied by HPLC. Western blot was used to determine the protein expressions of Bcl-2, Bax and Caspase 3 in the striatum. The numbers of tyrosine hydroxylase-immunoreactive (TH-IR) neurons in the substantial nigra pars compacta (SNpc) were assessed by immunohistochemistry. The activation of Akt and ERK by icariin were detected in doparminergic MES23.5 cells. RESULTS Icariin pretreatment could ameliorate the decreased striatum DA content and the loss of TH-IR neurons in the SNpc induced by MPTP. The MPTP-induced changes of Bcl-2, Bax and caspase 3 protein expressions in the striatum could be reversed by icariin pretreatment. Blockade of PI3K/Akt or MEK/ERK signaling pathway by LY294002 or PD98059 could attenuate the increase of DA content in the striatum and TH-IR in the SNpc induced by icariin in PD mice model. Additionally, icariin treatment alone significantly induced the phosphorylation of Akt and ERK in a time dependent pattern in dopaminergic MES 23.5 cells. These effects were abolished by co-treatment with LY294002 or PD98059. CONCLUSION These data demonstrated that icariin has neuroprotective effect on dopaminergic neurons in PD mice model and the potential mechanisms might be related to PI3K/Akt and MEK/ERK pathways.
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Affiliation(s)
- Wen-Fang Chen
- Department of Physiology, Shandong Provincial Collaborative Innovation Center for Neurodegenerative Disorders, Medical College of Qingdao University, Qingdao 266071, China..
| | - Lin Wu
- Department of Physiology, Shandong Provincial Collaborative Innovation Center for Neurodegenerative Disorders, Medical College of Qingdao University, Qingdao 266071, China.; Department of Physiology, Heze Medical College, Heze 274000, China
| | - Zhong-Rui Du
- Department of Physiology, Shandong Provincial Collaborative Innovation Center for Neurodegenerative Disorders, Medical College of Qingdao University, Qingdao 266071, China
| | - Lei Chen
- Department of Physiology, Shandong Provincial Collaborative Innovation Center for Neurodegenerative Disorders, Medical College of Qingdao University, Qingdao 266071, China
| | - Ai-Li Xu
- Department of Physiology, Shandong Provincial Collaborative Innovation Center for Neurodegenerative Disorders, Medical College of Qingdao University, Qingdao 266071, China.; Department of Physiology, Binzhou Medical University, Yantai 264003, China
| | - Xiao-Han Chen
- Department of Physiology, Shandong Provincial Collaborative Innovation Center for Neurodegenerative Disorders, Medical College of Qingdao University, Qingdao 266071, China
| | - Ji-Jun Teng
- Department of Neurology, Affiliated Hospital of Qingdao University, Qingdao 266071, China
| | - Man-Sau Wong
- Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, SAR, PR China
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Senescent cells expose and secrete an oxidized form of membrane-bound vimentin as revealed by a natural polyreactive antibody. Proc Natl Acad Sci U S A 2017; 114:E1668-E1677. [PMID: 28193858 DOI: 10.1073/pnas.1614661114] [Citation(s) in RCA: 88] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
Abstract
Studying the phenomenon of cellular senescence has been hindered by the lack of senescence-specific markers. As such, detection of proteins informally associated with senescence accompanies the use of senescence-associated β-galactosidase as a collection of semiselective markers to monitor the presence of senescent cells. To identify novel biomarkers of senescence, we immunized BALB/c mice with senescent mouse lung fibroblasts and screened for antibodies that recognized senescence-associated cell-surface antigens by FACS analysis and a newly developed cell-based ELISA. The majority of antibodies that we isolated, cloned, and sequenced belonged to the IgM isotype of the innate immune system. In-depth characterization of one of these monoclonal, polyreactive natural antibodies, the IgM clone 9H4, revealed its ability to recognize the intermediate filament vimentin. By using 9H4, we observed that senescent primary human fibroblasts express vimentin on their cell surface, and MS analysis revealed a posttranslational modification on cysteine 328 (C328) by the oxidative adduct malondialdehyde (MDA). Moreover, elevated levels of secreted MDA-modified vimentin were detected in the plasma of aged senescence-accelerated mouse prone 8 mice, which are known to have deregulated reactive oxygen species metabolism and accelerated aging. Based on these findings, we hypothesize that humoral innate immunity may recognize senescent cells by the presence of membrane-bound MDA-vimentin, presumably as part of a senescence eradication mechanism that may become impaired with age and result in senescent cell accumulation.
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Wang J, Cheng X, Zeng J, Yuan J, Wang Z, Zhou W, Zhang Y. LW-AFC Effects on N-glycan Profile in Senescence-Accelerated Mouse Prone 8 Strain, a Mouse Model of Alzheimer's Disease. Aging Dis 2017; 8:101-114. [PMID: 28203484 PMCID: PMC5287383 DOI: 10.14336/ad.2016.0522] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2016] [Accepted: 05/22/2016] [Indexed: 12/29/2022] Open
Abstract
Glycosylation is one of the most common eukaryotic post-translational modifications, and aberrant glycosylation has been linked to many diseases. However, glycosylation and glycome analysis is a significantly challenging task. Although several lines of evidence have indicated that protein glycosylation is defective in Alzheimer’s disease (AD), only a few studies have focused on AD glycomics. The etiology of AD is unclear and there are no effective disease-modifying treatments for AD. In this study, we found that the object recognition memory, passive avoidance, and spatial learning and memory of senescence-accelerated mouse prone 8 (SAMP8) strain, an AD animal model, were deficient, and LW-AFC, which was prepared from the traditional Chinese medicine prescription Liuwei Dihuang decoction, showed beneficial effects on the deterioration of cognitive capability in SAMP8 mice. Forty-three and 56 N-glycan were identified in the cerebral cortex and serum of SAMP8 mice, respectively. The N-glycan profile in SAMP8 mice was significantly different from that of senescence accelerated mouse resistant 1 (SAMR1) strains, the control of SAMP8 mice. Treatment with LW-AFC modulated the abundance of 21 and 6 N-glycan in the cerebral cortex and serum of SAMP8 mice, respectively. The abundance of (Hex)3(HexNAc)5(Fuc)1(Neu5Ac)1 and (Hex)2(HexNAc)4 decreased in the cerebral cortex and serum of SAMP8 mice compared with SAMR1 mice, decreases that were significantly correlated with learning and memory measures. The administration of LW-AFC could reverse or increase these levels in SAMP8 mice. These results indicated that the effects of LW-AFC on cognitive impairments in SAMP8 mice might be through modulation of N-glycan patterns, and LW-AFC may be a potential anti-AD agent.
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Affiliation(s)
- Jianhui Wang
- 1Department of TCM and Neuroimmunopharmacology, Beijing Institute of Pharmacology and Toxicology, Beijing 100850, China; 2State Key Laboratory of Toxicology and Medical Countermeasures, Beijing 100850, China
| | - Xiaorui Cheng
- 1Department of TCM and Neuroimmunopharmacology, Beijing Institute of Pharmacology and Toxicology, Beijing 100850, China; 2State Key Laboratory of Toxicology and Medical Countermeasures, Beijing 100850, China
| | - Ju Zeng
- 1Department of TCM and Neuroimmunopharmacology, Beijing Institute of Pharmacology and Toxicology, Beijing 100850, China; 2State Key Laboratory of Toxicology and Medical Countermeasures, Beijing 100850, China
| | - Jiangbei Yuan
- 3Educational Ministry Key Laboratory of Resource Biology and Biotechnology in Western China, Life Sciences College, Northwest University, Xi'an 710069, China
| | - Zhongfu Wang
- 3Educational Ministry Key Laboratory of Resource Biology and Biotechnology in Western China, Life Sciences College, Northwest University, Xi'an 710069, China
| | - Wenxia Zhou
- 1Department of TCM and Neuroimmunopharmacology, Beijing Institute of Pharmacology and Toxicology, Beijing 100850, China; 2State Key Laboratory of Toxicology and Medical Countermeasures, Beijing 100850, China
| | - Yongxiang Zhang
- 1Department of TCM and Neuroimmunopharmacology, Beijing Institute of Pharmacology and Toxicology, Beijing 100850, China; 2State Key Laboratory of Toxicology and Medical Countermeasures, Beijing 100850, China
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Chen XJ, Tang ZH, Li XW, Xie CX, Lu JJ, Wang YT. Chemical Constituents, Quality Control, and Bioactivity of Epimedii Folium (Yinyanghuo). THE AMERICAN JOURNAL OF CHINESE MEDICINE 2015; 43:783-834. [DOI: 10.1142/s0192415x15500494] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Epimedii Folium (Yinyanghuo in Chinese) is one of the most commonly used traditional Chinese medicines. Its main active components are flavonoids, which exhibit multiple biological activities, such as promotion of bone formation and sexual function, protection of the nervous system, and prevention of cardiovascular diseases. Flavonoids also show anti-inflammatory and anticancer effects. Various effective methods, including genetic and chemical approaches, have been developed for the quality control of Yinyanghuo. In this review, the studies conducted in the last decade about the chemical constituents, quality control, and bioactivity of Yinyanghuo are summarized and discussed.
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Affiliation(s)
- Xiao-Jia Chen
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macao, China
| | - Zheng-Hai Tang
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macao, China
| | - Xi-Wen Li
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macao, China
- Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing 100700, China
| | - Cai-Xiang Xie
- Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing 100193, China
| | - Jin-Jian Lu
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macao, China
| | - Yi-Tao Wang
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macao, China
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Dias C, Rauter AP. Carbohydrates and Glycomimetics in Alzheimer's Disease Therapeutics and Diagnosis. CARBOHYDRATES IN DRUG DESIGN AND DISCOVERY 2015. [DOI: 10.1039/9781849739993-00180] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Alzheimer's disease is the most prevalent form of late-life dementia, affecting millions worldwide. The devastating nature of the disease, unsuccessful treatment options and high socio-economic impact has inspired scientists to develop new structures with neuroprotective properties. Although currently available drugs target cholinergic neurotransmission, investigation towards disease-modifying therapies has been growing and carbohydrates have been playing an active role in the latest discoveries. Sugars, as polyfunctional compounds particularly important in biology and widely involved in human health and disease, have great potential to generate bioactive and bioavailable interesting molecules. Herein we discuss the importance of carbohydrates and glycomimetic structures, addressing different aspects of neuroprotection under investigation, targeting amyloid, tau and cholinergic hypotheses. The potential of carbohydrates in diagnosis is also discussed.
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Affiliation(s)
- Catarina Dias
- Centro de Química e Bioquímica, Faculdade de Ciências, Universidade de Lisboa, Campo Grande 1749-016 Lisbon Portugal
| | - Amélia P. Rauter
- Centro de Química e Bioquímica, Faculdade de Ciências, Universidade de Lisboa, Campo Grande 1749-016 Lisbon Portugal
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Zhang Z, Zhang T, Dong K. Icariin upregulates phosphorylated cyclic adenosine monophosphate response element binding protein levels in the hippocampus of the senescence- accelerated mouse. Neural Regen Res 2015; 7:885-90. [PMID: 25722670 PMCID: PMC4341281 DOI: 10.3969/j.issn.1673-5374.2012.12.001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2011] [Accepted: 02/24/2012] [Indexed: 12/12/2022] Open
Abstract
At 8 weeks after intragastric administration of icariin to senescence-accelerated mice (P8 strain), Morris water maze results showed that escape latency was shortened, and the number of platform crossings was increased. Immunohistochemical staining and western blot assay detected significantly increased levels of cyclic adenosine monophosphate response element binding protein. These results suggest that icariin upregulates phosphorylated cyclic adenosine monophosphate response element binding protein levels and improves learning and memory functions in hippocampus of the senescence-accelerated mouse.
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Affiliation(s)
- Zhanwei Zhang
- Department of Neurosurgery, First Affiliated Hospital, Hunan University of Chinese Medicine, Changsha 410007, Hunan Province, China
| | - Ting Zhang
- Department of Traditional Chinese Medicine, Third Xiangya Hospital, Central South University, Changsha 410013, Hunan Province, China
| | - Keli Dong
- Department of Traditional Chinese Medicine, Third Xiangya Hospital, Central South University, Changsha 410013, Hunan Province, China
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Icariin Prevents Amyloid Beta-Induced Apoptosis via the PI3K/Akt Pathway in PC-12 Cells. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2015; 2015:235265. [PMID: 25705234 PMCID: PMC4326344 DOI: 10.1155/2015/235265] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/25/2014] [Accepted: 01/05/2015] [Indexed: 01/01/2023]
Abstract
Icariin is a prenylated flavonol glycoside derived from the Chinese herb Epimedium sagittatum that exerts a variety of pharmacological activities and shows promise in the treatment and prevention of Alzheimer's disease. In this study, we investigated the neuroprotective effects of icariin against amyloid beta protein fragment 25–35 (Aβ25–35) induced neurotoxicity in cultured rat pheochromocytoma PC12 cells and explored potential underlying mechanisms. Our results showed that icariin dose-dependently increased cell viability and decreased Aβ25–35-induced apoptosis, as assessed by MTT assay and Annexin V/propidium iodide staining, respectively. Results of western blot analysis revealed that the selective phosphatidylinositol 3-kinase (PI3K) inhibitor LY294002 suppressed icariin-induced Akt phosphorylation, suggesting that the protective effects of icariin are associated with activation of the PI3K/Akt signaling pathway. LY294002 also blocked the icariin-induced downregulation of proapoptotic factors Bax and caspase-3 and upregulation of antiapoptotic factor Bcl-2 in Aβ25–35-treated PC12 cells. These findings provide further evidence for the clinical efficacy of icariin in the treatment of Alzheimer's disease.
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Li C, Li Q, Mei Q, Lu T. Pharmacological effects and pharmacokinetic properties of icariin, the major bioactive component in Herba Epimedii. Life Sci 2015; 126:57-68. [PMID: 25634110 DOI: 10.1016/j.lfs.2015.01.006] [Citation(s) in RCA: 183] [Impact Index Per Article: 20.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2014] [Revised: 12/22/2014] [Accepted: 01/10/2015] [Indexed: 12/22/2022]
Abstract
Herba Epimedii is an important medicinal plant which has been used in various traditional Chinese formulations for thousands of years as well as in modern proprietary traditional Chinese medicine products. It has extensive clinical indications, especially for the treatment of sexual dysfunction and osteoporosis. There have been more than 260 chemical moieties identified in the genus Epimedium most of which belong to flavonoids. Icariin is the most abundant constituent in Herba Epimedii. Icariin is pharmacologically bioactive and demonstrates extensive therapeutic capacities such as osteoprotective effect, neuroprotective effect, cardiovascular protective effect, anti-cancer effect, anti-inflammation effect, immunoprotective effect and reproductive function. Particularly, the significant osteogenic effect of icariin made it a promising drug candidate in bone tissue engineering. The current review paper aims to summarize the literatures reporting the pharmacological effects of icariin. The pharmacokinetic properties of bioactive ingredients in Herba Epimedii have also been discussed.
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Affiliation(s)
- Chenrui Li
- Key Laboratory for Space Biosciences & Biotechnology, School of Life Sciences, Northwestern Polytechnical University, Xi'an, Shaanxi, China
| | - Qiang Li
- Department of Radiology, Tangdu Hospital, The Fourth Military Medical University, Xi'an, Shaanxi, China
| | - Qibing Mei
- Key Laboratory for Space Biosciences & Biotechnology, School of Life Sciences, Northwestern Polytechnical University, Xi'an, Shaanxi, China
| | - Tingli Lu
- Key Laboratory for Space Biosciences & Biotechnology, School of Life Sciences, Northwestern Polytechnical University, Xi'an, Shaanxi, China.
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Cheng XR, Zhou WX, Zhang YX. The behavioral, pathological and therapeutic features of the senescence-accelerated mouse prone 8 strain as an Alzheimer's disease animal model. Ageing Res Rev 2014; 13:13-37. [PMID: 24269312 DOI: 10.1016/j.arr.2013.10.002] [Citation(s) in RCA: 94] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2013] [Revised: 10/10/2013] [Accepted: 10/30/2013] [Indexed: 12/22/2022]
Abstract
Alzheimer's disease (AD) is a widespread and devastating progressive neurodegenerative disease. Disease-modifying treatments remain beyond reach, and the etiology of the disease is uncertain. Animal model are essential for identifying disease mechanisms and developing effective therapeutic strategies. Research on AD is currently being carried out in rodent models. The most common transgenic mouse model mimics familial AD, which accounts for a small percentage of cases. The senescence-accelerated mouse prone 8 (SAMP8) strain is a spontaneous animal model of accelerated aging. Many studies indicate that SAMP8 mice harbor the behavioral and histopathological signatures of AD, namely AD-like cognitive and behavioral alterations, neuropathological phenotypes (neuron and dendrite spine loss, spongiosis, gliosis and cholinergic deficits in the forebrain), β-amyloid deposits resembling senile plaques, and aberrant hyperphosphorylation of Tau-like neurofibrillary tangles. SAMP8 mice are useful in the development of novel therapies, and many pharmacological agents and approaches are effective in SAMP8 mice. SAMP8 mice are considered a robust model for exploring the etiopathogenesis of sporadic AD and a plausible experimental model for developing preventative and therapeutic treatments for late-onset/age-related AD, which accounts for the vast majority of cases.
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Affiliation(s)
- Xiao-rui Cheng
- Beijing Institute of Pharmacology and Toxicology, Beijing 100850, China
| | - Wen-xia Zhou
- Beijing Institute of Pharmacology and Toxicology, Beijing 100850, China.
| | - Yong-xiang Zhang
- Beijing Institute of Pharmacology and Toxicology, Beijing 100850, China.
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Schluesener JK, Schluesener H. Plant polyphenols in the treatment of age-associated diseases: revealing the pleiotropic effects of icariin by network analysis. Mol Nutr Food Res 2013; 58:49-60. [PMID: 24311544 DOI: 10.1002/mnfr.201300409] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2013] [Revised: 10/18/2013] [Accepted: 10/30/2013] [Indexed: 12/15/2022]
Abstract
Polyphenols are a broad class of compounds. Some are ingested in substantial quantities from nutritional sources, more are produced by medicinal plants, and some of them are taken as drugs. It is becoming clear, that a single polyphenol is impacting several cellular pathways. Thus, a network approach is becoming feasible, describing the interaction of a single polyphenol with cellular networks. Here we have selected icariin to draw a prototypic network of icariin activities. Icariin appears to be a promising drug to treat major age-related diseases, like neurodegeneration, memory and depressive disorders, chronic inflammation, diabetes, and osteoporosis. It interacts with several relevant pathways, like PDE, TGF-ß, MAPK, PPAR, NOS, IGF, Sirtuin, and others. Such networks will be useful to future comparative studies of complex effects of polyphenols.
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Affiliation(s)
- Jan Kevin Schluesener
- Division of Immunopathology of the Nervous System, Department of Neuropathology, Institute of Pathology and Neuropathology, University of Tuebingen, Tuebingen, Germany
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Nobiletin, a citrus flavonoid, ameliorates cognitive impairment, oxidative burden, and hyperphosphorylation of tau in senescence-accelerated mouse. Behav Brain Res 2013; 250:351-60. [DOI: 10.1016/j.bbr.2013.05.025] [Citation(s) in RCA: 78] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2012] [Revised: 05/13/2013] [Accepted: 05/18/2013] [Indexed: 11/21/2022]
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Effects of Moxa Smoke on Monoamine Neurotransmitters in SAMP8 Mice. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2013; 2013:178067. [PMID: 23762105 PMCID: PMC3666371 DOI: 10.1155/2013/178067] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/21/2013] [Revised: 04/01/2013] [Accepted: 04/02/2013] [Indexed: 11/25/2022]
Abstract
Objectives. To investigate the anti-aging effects of moxa smoke on SAMP8 mice. Methods. Using 2 × 3 factorial design, exposure length (15 or 30 minutes daily), and concentration (low, 5–15 mg/m3; middle, 25–35 mg/m3; high, 85–95 mg/m3), 70 SAMP8 mice were randomly assigned, n = 10/group, to a model group or one of six moxa smoke groups: L1, L2, M1, M2, H1, or H2. Ten SAMR1 mice were used as normal control. Mice in moxa smoke groups were exposed to moxa smoke at respective concentrations and exposure lengths; the model and normal control mice were not exposed. Cerebral 5-HT, DA, and NE levels were determined using ELISA. Results. Compared to normal control, the model group showed a significant decrease in 5-HT, DA, and NE. Compared to model group, 5-HT and NE were significantly higher in groups L2, M1, and M2 and DA was significantly so in L2 and M1. 5-HT, DA, and NE levels were the highest in group M1 among moxa smoke groups. A marked exposure length × concentration interaction was observed for 5-HT, DA, and NE. Conclusion. Moxa smoke increases monoamine neurotransmitter levels, which varies according to concentration and exposure length. Our finding suggests that the middle concentration of moxa smoke for 15 minutes seems the most beneficial.
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Inhibition of Th1/Th17 responses via suppression of STAT1 and STAT3 activation contributes to the amelioration of murine experimental colitis by a natural flavonoid glucoside icariin. Biochem Pharmacol 2012; 85:798-807. [PMID: 23261528 DOI: 10.1016/j.bcp.2012.12.002] [Citation(s) in RCA: 66] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2012] [Revised: 12/04/2012] [Accepted: 12/05/2012] [Indexed: 11/20/2022]
Abstract
Inflammatory bowel disease (IBD) is a chronic inflammatory disorder in the intestine which involves overproduction of pro-inflammatory cytokines and excessive functions of inflammatory cells. However, current treatments for IBD may have potential adverse effects including steroid dependence, infections and lymphoma. Therefore new therapies or drug candidates for the treatment of IBD are desperately needed. In the present study we found that icariin, a major bioactive compound from plants in Epimedium family, exerted protective effect on intestinal inflammation in mice induced by dextran sulfate sodium. Oral administration of icariin significantly attenuated the disease progression and alleviated the pathological changes of colitis. It also inhibited the production of pro-inflammatory cytokines and expression of p-p65, p-STAT1 and p-STAT3 in colon tissues. Further study showed that icariin dose-dependently inhibited the proliferation and activation of T lymphocytes, and suppressed pro-inflammatory cytokine levels of activated T cells. Moreover, icariin treatment inhibited the phosphorylations of STAT1 and STAT3 in CD4(+) T cells, which were the crucial transcription factors for Th1 and Th17 respectively. Taken together, these results indicate that icariin is a potential therapeutic agent for IBD.
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Epimedium koreanum Extract and Its Constituent Icariin Improve Motor Dysfunction in Spinal Cord Injury. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2012; 2012:731208. [PMID: 22956977 PMCID: PMC3432561 DOI: 10.1155/2012/731208] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/08/2012] [Accepted: 07/11/2012] [Indexed: 11/18/2022]
Abstract
Although cell transplantation strategies for spinal cord injury (SCI) using sources such as iPS cells and neural stem cells are focused as expectative therapies for SCI, the possibility of medication as more accessible and practical way should not be given up. We, therefore, aimed to develop medical sources for SCI. In this paper, we evaluated effects of a famous tonic herb, Epimedium koreanum, on motor dysfunction in spinal cord injury (SCI). The spinal cord was injured by contusion after laminectomy at T10 level. Oral administration of the methanol extract of E. koreanum significantly enhanced hindlimb function in SCI mice by short period treatment (for initial 3 days) and chronic treatment (21 days), although chronic treatment recovered the function more potently. Since it is well known that icariin is the major constituent in E. koreanum, icariin was administered orally to SCI mice for initial 3 days. Motor dysfunction was ameliorated by icariin treatment similarly to the methanol extract of E. koreanum. This paper is the first report to indicate E. koreanum is effective for recovery of motor function in SCI, and at least icariin is an active constituent.
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Morley JE, Armbrecht HJ, Farr SA, Kumar VB. The senescence accelerated mouse (SAMP8) as a model for oxidative stress and Alzheimer's disease. Biochim Biophys Acta Mol Basis Dis 2012; 1822:650-6. [DOI: 10.1016/j.bbadis.2011.11.015] [Citation(s) in RCA: 136] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2011] [Revised: 11/11/2011] [Accepted: 11/12/2011] [Indexed: 12/11/2022]
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Massaad CA, Klann E. Reactive oxygen species in the regulation of synaptic plasticity and memory. Antioxid Redox Signal 2011; 14:2013-54. [PMID: 20649473 PMCID: PMC3078504 DOI: 10.1089/ars.2010.3208] [Citation(s) in RCA: 391] [Impact Index Per Article: 30.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
The brain is a metabolically active organ exhibiting high oxygen consumption and robust production of reactive oxygen species (ROS). The large amounts of ROS are kept in check by an elaborate network of antioxidants, which sometimes fail and lead to neuronal oxidative stress. Thus, ROS are typically categorized as neurotoxic molecules and typically exert their detrimental effects via oxidation of essential macromolecules such as enzymes and cytoskeletal proteins. Most importantly, excessive ROS are associated with decreased performance in cognitive function. However, at physiological concentrations, ROS are involved in functional changes necessary for synaptic plasticity and hence, for normal cognitive function. The fine line of role reversal of ROS from good molecules to bad molecules is far from being fully understood. This review focuses on identifying the multiple sources of ROS in the mammalian nervous system and on presenting evidence for the critical and essential role of ROS in synaptic plasticity and memory. The review also shows that the inability to restrain either age- or pathology-related increases in ROS levels leads to opposite, detrimental effects that are involved in impairments in synaptic plasticity and memory function.
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Affiliation(s)
- Cynthia A Massaad
- Department of Molecular Physiology and Biophysics, Baylor College of Medicine, Houston, TX 77030, USA.
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Gang B, Yue C, Han N, Xue H, Li B, Sun L, Li X, Zhao Q. Limited hippocampal neurogenesis in SAMP8 mouse model of Alzheimer's disease. Brain Res 2011; 1389:183-93. [PMID: 21439270 DOI: 10.1016/j.brainres.2011.03.039] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2010] [Revised: 03/12/2011] [Accepted: 03/16/2011] [Indexed: 12/19/2022]
Abstract
Increasing adult neurogenesis in the hippocampal formation (HF) has been proposed as a potential foundation for neuronal repair in Alzheimer's disease (AD), but the evidence remains controversial. We used P8 strain of senescence-accelerated mice (SAMP8) as a model of AD to investigate changes in adult neurogenesis. We examined new proliferating cells and their survival in the dentate gyrus (DG) of the HF using 5-bromodeoxyuridine (BrdU) labeling and investigated newborn cell development and differentiation with a combination of phenotype markers. In 5-month-old SAMP8, the number of BrdU(+) cells in the DG was significantly increased relative to controls, in accordance with the rising numbers of doublecortin-positive (DCX(+)) immature neurons. Some of these BrdU(+) cells migrated to cornu ammonis 1 (CA1), possibly related to the compensation of neuronal loss. However, the capacity of neurogenesis to compensate neuronal loss during neurodegeneration was limited. First, only half of the BrdU(+) cells survived 4weeks after mitosis, and even fewer developed into neuron-specific nuclear protein positive (NeuN(+)) mature neurons. Second, the number of BrdU(+) cells and DCX(+) cells was decreased in 10-month-old SAMP8, which exhibited progressive neurodegeneration. In addition, the results provided insight into astrocytes as a crucial component of the neurogenic niche. The number of newborn astrocytes and expression of glial fibrillary acidic protein (GFAP) were diminished in the DG of SAMP8 animals, possibly explaining the insufficient neurogenesis. Thus, stimulating limited neurogenesis in AD by improving the neurogenic niche may have therapeutic potential.
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Affiliation(s)
- Baozhi Gang
- Department of Neurology, The First Clinical College, Harbin Medical University, 23rd Youzheng Street, Nangang District, Harbin, Heilongjiang Province 15001, China
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Abstract
This review focuses on recent developments in the use of natural products as therapeutics for Alzheimer's disease. The compounds span a diverse array of structural classes and are organized according to their mechanism of action, with the focus primarily on the major hypotheses. Overall, the review discusses more than 180 compounds and summarizes 400 references.
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Affiliation(s)
- Philip Williams
- Department of Chemistry, University of Hawaii at Manoa, Honolulu, Hawaii 96822, USA
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