1
|
Liang G, Lee YZ, Kow ASF, Lee QL, Cheng Lim LW, Yusof R, Tham CL, Ho YC, Lee MT. Neuroprotective effects of Gypenosides: A review on preclinical studies in neuropsychiatric disorders. Eur J Pharmacol 2024; 978:176766. [PMID: 38908668 DOI: 10.1016/j.ejphar.2024.176766] [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: 02/12/2024] [Revised: 05/27/2024] [Accepted: 06/19/2024] [Indexed: 06/24/2024]
Abstract
Gynostemma pentaphyllum (Thunb.) Makino is a perennial creeping herb belonging to the Cucurbitaceae family that has a long history of usage in traditional oriental medicine. Gypenosides are the primary bioactive compounds in Gynostemma pentaphyllum. Because of the medicinal value of gypenosides, functional food and supplements containing gypenosides have been promoted and consumed with popularity, especially among Asian communities. This review presented the progress made in the research of pharmacological properties of gypenosides on diseases of the nervous system and their possible mechanism of action. To date, preclinical studies have demonstrated the therapeutic effects of gypenosides in alleviating neuropsychiatric disorders like depression, Parkinson's disease, Alzheimer's disease, secondary dementia, stroke, optic neuritis, etc. Pharmacological studies have discovered that gypenosides can modulate various major signaling pathways like NF-κB, Nrf2, AKT, ERK1/2, contributing to the neuroprotective properties. However, there is a dearth of clinical research on gypenosides, with current investigations on the compounds being mainly conducted in vitro and on animals. Future studies focusing on isolating and purifying novel gypenosides and investigations on exploring the potential molecular mechanism underlying their biological activities are warranted, which may serve as a foundation for further clinical trials for the betterment of human health.
Collapse
Affiliation(s)
- Gengfan Liang
- Faculty of Pharmaceutical Sciences, UCSI University, Kuala Lumpur, 56000, Malaysia.
| | - Yu Zhao Lee
- Office of Postgraduate Studies, UCSI University, Kuala Lumpur, 56000, Malaysia; Faculty of Applied Sciences, UCSI University, Kuala Lumpur, 56000, Malaysia.
| | | | - Qi Long Lee
- School of Health Sciences, International Medical University, Kuala Lumpur, 57000, Malaysia.
| | - Luis Wei Cheng Lim
- School of Health Sciences, International Medical University, Kuala Lumpur, 57000, Malaysia.
| | - Rohana Yusof
- Faculty of Applied Sciences, UCSI University, Kuala Lumpur, 56000, Malaysia.
| | - Chau Ling Tham
- Department of Biomedical Sciences, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, Serdang , 43400, Selangor, Malaysia; Natural Medicine and Product Research Laboratory (NaturMeds), Institute of Bioscience, Universiti Putra Malaysia, Serdang , 43400, Selangor, Malaysia.
| | - Yu-Cheng Ho
- School of Medicine, College of Medicine, I-Shou University, Kaohsiung City, 82445, Taiwan.
| | - Ming Tatt Lee
- Faculty of Pharmaceutical Sciences, UCSI University, Kuala Lumpur, 56000, Malaysia; Centre of Research for Mental Health and Well-being, UCSI University, Kuala Lumpur, 56000, Malaysia.
| |
Collapse
|
2
|
Xia X, Chen J, Ren H, Zhou C, Zhang Q, Cheng H, Wang X. Gypenoside Pretreatment Alleviates the Cerebral Ischemia Injury via Inhibiting the Microglia-Mediated Neuroinflammation. Mol Neurobiol 2024; 61:1140-1156. [PMID: 37688709 DOI: 10.1007/s12035-023-03624-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2023] [Accepted: 08/29/2023] [Indexed: 09/11/2023]
Abstract
Neuroinflammation is closely related to prognosis in ischemic stroke. Microglia are the main immune cells in the nervous system. Under physiological conditions, microglia participate in clearance of dead cells, synapse pruning and regulation of neuronal circuits to maintain the overall health of the nervous system. Once ischemic stroke occurs, microglia function in the occurrence and progression of neuroinflammation. Therefore, the regulation of microglia-mediated neuroinflammation is a potential therapeutic strategy for ischemic stroke. The anti-inflammatory activity of gypenosides (GPs) has been confirmed to be related to the activity of microglia in other neurological diseases. However, the role of GPs in neuroinflammation after ischemic stroke has not been studied. In this study, we investigated whether GPs could reduce neuroinflammation by regulating microglia and the underlying mechanism through qRT-PCR and western blot. Results showed that GPs pretreatment mitigated blood-brain barrier (BBB) damage in the mice subjected to middle cerebral artery occlusion (MCAO) and improved motor function. According to the results of immunofluorescence staining, GPs pretreatment alleviated neuroinflammation in MCAO mice by reducing the number of microglia and promoting their phenotypic transformation from M1 to M2. Furthermore, GPs pretreatment reduced the number of astrocytes in the penumbra and inhibited their polarization into the A1 type. We applied oxygen and glucose deprivation (OGD) on BV2 cells to mimic ischemic conditions in vitro and found similar effect as that in vivo. At the molecular level, the STAT-3/HIF1-α and TLR-4/NF-κB/HIF1-α pathways were involved in the anti-inflammatory effects of GPs in vitro and in vivo. Overall, this research indicates that GPs are potential therapeutic agents for ischemic stroke and has important reference significance to further explore the possibility of GPs application in ischemic stroke.
Collapse
Affiliation(s)
- Xue Xia
- Department of Cell Biology, School of Basic Medical Sciences, Cheeloo College of Medicine, Shandong University, Jinan, China
| | - Jiahao Chen
- Department of Cell Biology, School of Basic Medical Sciences, Cheeloo College of Medicine, Shandong University, Jinan, China
| | - Haiyuan Ren
- Department of Cell Biology, School of Basic Medical Sciences, Cheeloo College of Medicine, Shandong University, Jinan, China
| | - Chang Zhou
- Department of Cell Biology, School of Basic Medical Sciences, Cheeloo College of Medicine, Shandong University, Jinan, China
| | - Qingli Zhang
- Department of Cell Biology, School of Basic Medical Sciences, Cheeloo College of Medicine, Shandong University, Jinan, China
| | - Haoyang Cheng
- Department of Cell Biology, School of Basic Medical Sciences, Cheeloo College of Medicine, Shandong University, Jinan, China
| | - Xiaojing Wang
- Department of Cell Biology, School of Basic Medical Sciences, Cheeloo College of Medicine, Shandong University, Jinan, China.
| |
Collapse
|
3
|
Wagdy R, Abdel-Kader RM, El-Khatib AH, Linscheid MW, Handoussa H, Hamdi N. Origanum majorana L. protects against neuroinflammation-mediated cognitive impairment: a phyto-pharmacological study. BMC Complement Med Ther 2023; 23:165. [PMID: 37210483 DOI: 10.1186/s12906-023-03994-x] [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: 10/07/2022] [Accepted: 05/09/2023] [Indexed: 05/22/2023] Open
Abstract
BACKGROUND Neuroinflammation and oxidative stress are critical players in the pathogenesis of numerous neurodegenerative diseases, such as Alzheimer's disease (AD) which is responsible for most cases of dementia in the elderly. With the lack of curative treatments, natural phenolics are potential candidates to delay the onset and progression of such age-related disorders due to their potent antioxidant and anti-inflammatory effects. This study aims at assessing the phytochemical characteristics of Origanum majorana L. (OM) hydroalcohol extract and its neuroprotective activities in a murine neuroinflammatory model. METHODS OM phytochemical analysis was done by HPLC/PDA/ESI-MSn. Oxidative stress was induced in vitro by hydrogen peroxide and cell viability was measured using WST-1 assay. Swiss albino mice were injected intraperitoneally with OM extract at a dose of 100 mg/kg for 12 days and with 250 μg/kg LPS daily starting from day 6 to induce neuroinflammation. Cognitive functions were assessed by novel object recognition and Y-maze behavioral tests. Hematoxylin and eosin staining was used to assess the degree of neurodegeneration in the brain. Reactive astrogliosis and inflammation were assessed by immunohistochemistry using GFAP and COX-2 antibodies, respectively. RESULTS OM is rich in phenolics, with rosmarinic acid and its derivatives being major constituents. OM extract and rosmarinic acid significantly protected microglial cells against oxidative stress-induced cell death (p < 0.001). OM protected against the LPS-induced alteration of recognition and spatial memory in mice (p < 0.001) and (p < 0.05), respectively. Mice that received OM extract prior to the induction of neuroinflammation showed comparable histology to control brains, with no overt neurodegeneration. Furthermore, OM pre-treatment decreased the immunohistochemistry profiler score of GFAP from positive to low positive and COX-2 from low positive to negative in the brain tissue, compared to the LPS group. CONCLUSION These findings highlight the potential preventive effects of OM phenolics against neuroinflammation and pave the way toward drug discovery and development for neurodegenerative disorders.
Collapse
Affiliation(s)
- Reham Wagdy
- Department of Pharmaceutical Biology, German University in Cairo, Cairo, Egypt
| | - Reham M Abdel-Kader
- Department of Pharmacology and Toxicology, Faculty of Pharmacy and Biotechnology, German University in Cairo, New Cairo City, 11835, Egypt
| | - Ahmed H El-Khatib
- Department of Pharmaceutical Analytical Chemistry, Faculty of Pharmacy, Ain Shams University, Cairo, Egypt
- Department of Chemistry, Humboldt-Universität Zu Berlin, Berlin, Germany
| | | | - Heba Handoussa
- Department of Pharmaceutical Biology, German University in Cairo, Cairo, Egypt
| | - Nabila Hamdi
- Department of Pharmacology and Toxicology, Faculty of Pharmacy and Biotechnology, German University in Cairo, New Cairo City, 11835, Egypt.
| |
Collapse
|
4
|
Phytochemistry, Pharmacology and Molecular Mechanisms of Herbal Bioactive Compounds for Sickness Behaviour. Metabolites 2022; 12:metabo12121215. [PMID: 36557252 PMCID: PMC9782141 DOI: 10.3390/metabo12121215] [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: 11/10/2022] [Revised: 11/24/2022] [Accepted: 11/25/2022] [Indexed: 12/07/2022] Open
Abstract
The host's response to acute infections or tissue injury is a sophisticated and coordinated adaptive modification called sickness behaviour. Many herbs have been studied for their ability to protect animals against experimentally induced sickness behaviour. However, there is a lack of knowledge and experimental evidence on the use of herbal bioactive compounds (HBACs) in the management of sick behaviour. The goal of this review is to provide a concise summary of the protective benefits and putative mechanisms of action of phytochemicals on the reduction of lipopolysaccharide (LPS)-induced sickness behaviour. Relevant studies were gathered from the search engines Scopus, ScienceDirect, PubMed, Google Scholar, and other scientific databases (between 2000 and to date). The keywords used for the search included "Lipopolysaccharide" OR "LPS" OR "Sickness behaviour" OR "Sickness" AND "Bioactive compounds" OR "Herbal medicine" OR "Herbal drug" OR "Natural products" OR "Isolated compounds". A total of 41 published articles that represented data on the effect of HBACs in LPS-induced sickness behaviour were reviewed and summarised systemically. There were 33 studies that were conducted in mice and 8 studies in rats. A total of 34 HBACs have had their effects against LPS-induced changes in behaviour and biochemistry investigated. In this review, we examined 34 herbal bioactive components that have been tested in animal models to see if they can fight LPS-induced sickness behaviour. Future research should concentrate on the efficacy, safety, and dosage needed to protect against illness behaviour in humans, because there is a critical shortage of data in this area.
Collapse
|
5
|
Zhang MM, Huo GM, Cheng J, Zhang QP, Li NZ, Guo MX, Liu Q, Xu GH, Zhu JX, Li CF, Zhou F, Yi LT. Gypenoside XVII, an Active Ingredient from Gynostemma Pentaphyllum, Inhibits C3aR-Associated Synaptic Pruning in Stressed Mice. Nutrients 2022; 14:nu14122418. [PMID: 35745148 PMCID: PMC9228113 DOI: 10.3390/nu14122418] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2022] [Revised: 06/05/2022] [Accepted: 06/07/2022] [Indexed: 12/05/2022] Open
Abstract
Gynostemma pentaphyllum is a herbal medicine widely used in Asian countries, and its saponin extracts have been shown to possess potent anti-inflammatory effects. Gypenoside XVII, an active ingredient isolated from Gynostemma pentaphyllum, has been found to alleviate the inflammation induced by LPS in the BV2 microglia, according to our preliminary study. This study aims to evaluate whether Gypenoside XVII could attenuate depression-like symptoms in vivo and tries to demonstrate the involvement of the complement regulation in its antidepressant-like effect. The results showed that Gypenoside XVII significantly attenuated depression-like behaviors in the forced swimming test, tail suspension test and sucrose preference test. It also alleviated the acute stress-induced hyperactivity of serum corticosterone levels. Additionally, Gypenoside XVII significantly inhibited the activation of microglia and the expression of C3 in mice exposed to chronic unpredictable mild stress (CUMS). Meanwhile, the activation of C3aR/STAT3 signaling and the expression of proinflammatory cytokines was reversed by Gypenoside XVII. Moreover, CUMS induced excessive synaptic pruning by activating microglia, while Gypenoside XVII restored it in the prefrontal cortex. Our data demonstrated that Gypenoside XVII, the active ingredient of Gynostemma pentaphyllum, produced the antidepressant-like effects in mice, which was mediated by the inhibition of complement C3/C3aR/STAT3/cytokine signaling in the prefrontal cortex.
Collapse
Affiliation(s)
- Man-Man Zhang
- Department of Chemical and Pharmaceutical Engineering, Huaqiao University, Xiamen 361021, China; (M.-M.Z.); (J.C.); (Q.L.)
| | - Guo-Ming Huo
- School of Food Science, Nanjing Xiaozhuang University, Nanjing 211171, China;
| | - Jie Cheng
- Department of Chemical and Pharmaceutical Engineering, Huaqiao University, Xiamen 361021, China; (M.-M.Z.); (J.C.); (Q.L.)
| | - Qiu-Ping Zhang
- Xiamen Hospital of Traditional Chinese Medicine, Xiamen 361009, China; (Q.-P.Z.); (C.-F.L.)
| | - Na-Zhi Li
- Research Center of Natural Resources of Chinese Medicinal Materials and Ethnic Medicine, Jiangxi University of Traditional Chinese Medicine, Nanchang 330004, China; (N.-Z.L.); (M.-X.G.); (J.-X.Z.)
| | - Min-Xia Guo
- Research Center of Natural Resources of Chinese Medicinal Materials and Ethnic Medicine, Jiangxi University of Traditional Chinese Medicine, Nanchang 330004, China; (N.-Z.L.); (M.-X.G.); (J.-X.Z.)
| | - Qing Liu
- Department of Chemical and Pharmaceutical Engineering, Huaqiao University, Xiamen 361021, China; (M.-M.Z.); (J.C.); (Q.L.)
| | - Guang-Hui Xu
- Xiamen Medicine Research Institute, Xiamen 361008, China;
| | - Ji-Xiao Zhu
- Research Center of Natural Resources of Chinese Medicinal Materials and Ethnic Medicine, Jiangxi University of Traditional Chinese Medicine, Nanchang 330004, China; (N.-Z.L.); (M.-X.G.); (J.-X.Z.)
| | - Cheng-Fu Li
- Xiamen Hospital of Traditional Chinese Medicine, Xiamen 361009, China; (Q.-P.Z.); (C.-F.L.)
| | - Feng Zhou
- School of Food Science, Nanjing Xiaozhuang University, Nanjing 211171, China;
- Correspondence: (F.Z.); (L.-T.Y.)
| | - Li-Tao Yi
- Department of Chemical and Pharmaceutical Engineering, Huaqiao University, Xiamen 361021, China; (M.-M.Z.); (J.C.); (Q.L.)
- Correspondence: (F.Z.); (L.-T.Y.)
| |
Collapse
|
6
|
Arab Z, Hosseini M, Marefati N, Beheshti F, Anaeigoudari A, Sadeghnia HR, Boskabady MH. Neuroprotective and memory enhancing effects of Zataria multiflora in lipopolysaccharide-treated rats. VETERINARY RESEARCH FORUM : AN INTERNATIONAL QUARTERLY JOURNAL 2022; 13:101-110. [PMID: 35601788 PMCID: PMC9094587 DOI: 10.30466/vrf.2020.117553.2786] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/25/2019] [Accepted: 03/28/2020] [Indexed: 11/27/2022]
Abstract
The study was aimed to evaluate the effects of hydro-ethanol extract Zataria multiflora on the brain tissue oxidative damage, and hippocampal interleukin-6 (IL-6) as well as learning and memory capacity in lipopolysaccharide (LPS) - challenged rats. The rats were randomized into five groups as follow: Control group: Rats were treated with saline, LPS group: Rats were treated with LPS 1.00 mg kg-1, ZM50, ZM100 and ZM200 groups in which the rats were treated with Z. multiflora extract (50.00, 100 or 200 mg kg-1 per day, respectively). The treatments including extract or vehicle were administered intraperitoneally and given three days before the behavioral tests and were continued within a6-day behavioral experiment. Injection of LPS was daily done before the behavioral tests. Finally, the brains were collected for biochemical evaluations. Although LPS administration prolonged the latency in Morris water maze and shortened the latency to enter the dark chamber in passive avoidance test, ZM extract restored these changes to approach control group values. Also, LPS increased IL-6, malondialdehyde (MDA) and nitric oxide (NO) metabolites levels and lowered thiol, superoxide dismutase (SOD) and catalase (CAT) levels in the brain, however, Z. multiflora extract reduced IL-6, MDA and NO metabolites concentrations, but increased thiol content, SOD, and CAT levels. The results of this study showed that Z. multiflora ameliorated learning and memory dysfunction in LPS - challenged rats by alleviating of inflammatory responses and brain tissue oxidative damage.
Collapse
Affiliation(s)
- Zohreh Arab
- Psychiatry and Behavioral Sciences Research Center, Mashhad University of Medical Sciences, Mashhad, Iran;
| | - Mahmoud Hosseini
- Psychiatry and Behavioral Sciences Research Center, Mashhad University of Medical Sciences, Mashhad, Iran;
- Neuroscience Research Center, Mashhad University of Medical Sciences, Mashhad, Iran;
| | - Narges Marefati
- Department of Physiology and Medical Physics, Faculty of Medicine, Baqiyatallah University of Medical Sciences, Tehran, Iran;
| | - Farimah Beheshti
- Neuroscience Research Center, Torbat Heydariyeh University of Medical Sciences, Torbat Heydariyeh, Iran;
- Department of Physiology, School of Paramedical Sciences, Torbat Heydariyeh University of Medical Sciences, Torbat Heydariyeh, Iran;
| | - Akbar Anaeigoudari
- Department of Physiology,School of Medicine, Jiroft University of Medical Sciences, Jiroft,Iran;
| | - Hamid Reza Sadeghnia
- Pharmacological Research Center of Medicinal Plants, Mashhad University of Medical Sciences, Mashhad, Iran;
| | | |
Collapse
|
7
|
Su C, Li N, Ren R, Wang Y, Su X, Lu F, Zong R, Yang L, Ma X. Progress in the Medicinal Value, Bioactive Compounds, and Pharmacological Activities of Gynostemma pentaphyllum. Molecules 2021; 26:6249. [PMID: 34684830 PMCID: PMC8540791 DOI: 10.3390/molecules26206249] [Citation(s) in RCA: 33] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2021] [Revised: 10/10/2021] [Accepted: 10/11/2021] [Indexed: 11/25/2022] Open
Abstract
Gynostemma pentaphyllum (Thunb.) Makino (GP), also named Jiaogulan in Chinese, was known to people for its function in both health care and disease treatment. Initially and traditionally, GP was a kind of tea consumed by people for its pleasant taste and weight loss efficacy. With the passing of the centuries, GP became well known as more than just a tea. Until now, numbers of bioactive compounds, including saponins (also named gypenosides, GPS), polysaccharides (GPP), flavonoids, and phytosterols were isolated and identified in GP, which implied the great medicinal worth of this unusual tea. Both in vivo and in vitro tests, ranging from different cell lines to animals, indicated that GP possessed various biological activities including anti-cancer, anti-atherogenic, anti-dementia, and anti-Parkinson's diseases, and it also had lipid-regulating effects as well as neuroprotection, hepatoprotective, and hypoglycemic properties. With the further development and utilization of GP, the research on the chemical constituents and pharmacological properties of GP were deepening day by day and had made great progress. In this review, the recent research progress in the bioactive compounds, especially gypenosides, and the pharmacological activities of GP were summarized, which will be quite useful for practical applications of GP in the treatment of human diseases.
Collapse
Affiliation(s)
| | | | | | | | | | | | | | - Lingling Yang
- Department of Pharmaceutical Analysis, School of Pharmacy, Key Laboratory of Hui Ethnic Medicine Modernization, Ministry of Education, Ningxia Medical University, 1160 Shenli Street, Yinchuan 750004, China; (C.S.); (N.L.); (R.R.); (Y.W.); (X.S.); (F.L.); (R.Z.)
| | - Xueqin Ma
- Department of Pharmaceutical Analysis, School of Pharmacy, Key Laboratory of Hui Ethnic Medicine Modernization, Ministry of Education, Ningxia Medical University, 1160 Shenli Street, Yinchuan 750004, China; (C.S.); (N.L.); (R.R.); (Y.W.); (X.S.); (F.L.); (R.Z.)
| |
Collapse
|
8
|
Zhang J, Feng M, Pan L, Wang F, Wu P, You Y, Hua M, Zhang T, Wang Z, Zong L, Han Y, Guan W. Effects of vitamin D deficiency on the improvement of metabolic disorders in obese mice after vertical sleeve gastrectomy. Sci Rep 2021; 11:6036. [PMID: 33727603 PMCID: PMC7971024 DOI: 10.1038/s41598-021-85531-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2020] [Accepted: 02/28/2021] [Indexed: 01/31/2023] Open
Abstract
Vertical sleeve gastrectomy (VSG) is one of the most commonly performed clinical bariatric surgeries for the remission of obesity and diabetes. Its effects include weight loss, improved insulin resistance, and the improvement of hepatic steatosis. Epidemiologic studies demonstrated that vitamin D deficiency (VDD) is associated with many diseases, including obesity. To explore the role of vitamin D in metabolic disorders for patients with obesity after VSG. We established a murine model of diet-induced obesity + VDD, and we performed VSGs to investigate VDD's effects on the improvement of metabolic disorders present in post-VSG obese mice. We observed that in HFD mice, the concentration of VitD3 is four fold of HFD + VDD one. In the post-VSG obese mice, VDD attenuated the improvements of hepatic steatosis, insulin resistance, intestinal inflammation and permeability, the maintenance of weight loss, the reduction of fat loss, and the restoration of intestinal flora that were weakened. Our results suggest that in post-VSG obese mice, maintaining a normal level of vitamin D plays an important role in maintaining the improvement of metabolic disorders.
Collapse
Affiliation(s)
- Jie Zhang
- grid.428392.60000 0004 1800 1685Department of General Surgery, Nanjing Drum Tower Hospital Clinical College of Nanjing Medical University, Nanjing, China ,grid.268415.cDepartment of General Surgery, The Affiliated Hospital of Yangzhou University, Yangzhou, China
| | - Min Feng
- grid.428392.60000 0004 1800 1685Department of General Surgery, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, No. 321 Zhongshan Road, Nanjing, 210008 China
| | - Lisha Pan
- grid.13291.380000 0001 0807 1581Center for Growth, Metabolism and Aging, Analytical and Testing Center, Key Laboratory of Bio-Resource and Eco-Environment, College of Life Sciences, Sichuan University, No. 24 South Section 1, Yihuan Road, Chengdu, 610065 China
| | - Feng Wang
- grid.428392.60000 0004 1800 1685Department of General Surgery, Nanjing Drum Tower Hospital Clinical College of Nanjing Medical University, Nanjing, China ,grid.428392.60000 0004 1800 1685Department of General Surgery, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, No. 321 Zhongshan Road, Nanjing, 210008 China
| | - Pengfei Wu
- grid.13291.380000 0001 0807 1581Center for Growth, Metabolism and Aging, Analytical and Testing Center, Key Laboratory of Bio-Resource and Eco-Environment, College of Life Sciences, Sichuan University, No. 24 South Section 1, Yihuan Road, Chengdu, 610065 China
| | - Yang You
- grid.13291.380000 0001 0807 1581Center for Growth, Metabolism and Aging, Analytical and Testing Center, Key Laboratory of Bio-Resource and Eco-Environment, College of Life Sciences, Sichuan University, No. 24 South Section 1, Yihuan Road, Chengdu, 610065 China
| | - Meiyun Hua
- grid.13291.380000 0001 0807 1581Center for Growth, Metabolism and Aging, Analytical and Testing Center, Key Laboratory of Bio-Resource and Eco-Environment, College of Life Sciences, Sichuan University, No. 24 South Section 1, Yihuan Road, Chengdu, 610065 China
| | - Tianci Zhang
- grid.13291.380000 0001 0807 1581Center for Growth, Metabolism and Aging, Analytical and Testing Center, Key Laboratory of Bio-Resource and Eco-Environment, College of Life Sciences, Sichuan University, No. 24 South Section 1, Yihuan Road, Chengdu, 610065 China
| | - Zheng Wang
- grid.268415.cDepartment of Pathology, The First Affiliated Hospital of Yangzhou University, Yangzhou, China
| | - Liang Zong
- grid.254020.10000 0004 1798 4253Department of Gastrointestinal Surgery, Changzhi People’s Hospital, The Affiliated Hospital of Changzhi Medical College, Changzhi, Shanxi China
| | - Yuanping Han
- grid.13291.380000 0001 0807 1581Center for Growth, Metabolism and Aging, Analytical and Testing Center, Key Laboratory of Bio-Resource and Eco-Environment, College of Life Sciences, Sichuan University, No. 24 South Section 1, Yihuan Road, Chengdu, 610065 China
| | - Wenxian Guan
- grid.428392.60000 0004 1800 1685Department of General Surgery, Nanjing Drum Tower Hospital Clinical College of Nanjing Medical University, Nanjing, China ,grid.428392.60000 0004 1800 1685Department of General Surgery, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, No. 321 Zhongshan Road, Nanjing, 210008 China
| |
Collapse
|
9
|
El-Sahar AE, Shiha NA, El Sayed NS, Ahmed LA. Alogliptin Attenuates Lipopolysaccharide-Induced Neuroinflammation in Mice Through Modulation of TLR4/MYD88/NF-κB and miRNA-155/SOCS-1 Signaling Pathways. Int J Neuropsychopharmacol 2021; 24:158-169. [PMID: 33125461 PMCID: PMC7883892 DOI: 10.1093/ijnp/pyaa078] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/12/2020] [Revised: 10/03/2020] [Accepted: 10/28/2020] [Indexed: 12/20/2022] Open
Abstract
BACKGROUND Endotoxin-induced neuroinflammation plays a crucial role in the pathogenesis and progression of various neurodegenerative diseases. A growing body of evidence supports that incretin-acting drugs possess various neuroprotective effects that can improve learning and memory impairments in Alzheimer's disease models. Thus, the present study aimed to investigate whether alogliptin, a dipeptidyl peptidase-4 inhibitor, has neuroprotective effects against lipopolysaccharide (LPS)-induced neuroinflammation and cognitive impairment in mice as well as the potential mechanisms underlying these effects. METHODS Mice were treated with alogliptin (20 mg/kg/d; p.o.) for 14 days, starting 1 day prior to intracerebroventricular LPS injection (8 μg/μL in 3 μL). RESULTS Alogliptin treatment alleviated LPS-induced cognitive impairment as assessed by Morris water maze and novel object recognition tests. Moreover, alogliptin reversed LPS-induced increases in toll-like receptor 4 and myeloid differentiation primary response 88 protein expression, nuclear factor-κB p65 content, and microRNA-155 gene expression. It also rescued LPS-induced decreases in suppressor of cytokine signaling gene expression, cyclic adenosine monophosphate (cAMP) content, and phosphorylated cAMP response element binding protein expression in the brain. CONCLUSION The present study sheds light on the potential neuroprotective effects of alogliptin against intracerebroventricular LPS-induced neuroinflammation and its associated memory impairment via inhibition of toll-like receptor 4/ myeloid differentiation primary response 88/ nuclear factor-κB signaling, modulation of microRNA-155/suppressor of cytokine signaling-1 expression, and enhancement of cAMP/phosphorylated cAMP response element binding protein signaling.
Collapse
Affiliation(s)
- Ayman E El-Sahar
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Cairo University, Cairo, Egypt
| | - Nesma A Shiha
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Cairo University, Cairo, Egypt
| | - Nesrine S El Sayed
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Cairo University, Cairo, Egypt
| | - Lamiaa A Ahmed
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Cairo University, Cairo, Egypt
| |
Collapse
|
10
|
Zhang M, Li J, Guo X, Wang X, Shi D, Cui L, Zhou Y. Co-administration of berberine/gypenosides/bifendate ameliorates metabolic disturbance but not memory impairment in type 2 diabetic mice. Heliyon 2021; 7:e06004. [PMID: 33537476 PMCID: PMC7840859 DOI: 10.1016/j.heliyon.2021.e06004] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2020] [Revised: 10/24/2020] [Accepted: 01/14/2021] [Indexed: 02/07/2023] Open
Abstract
Cognitive impairment is a well-known complication of Type 2 diabetes mellitus (T2DM) characterized by cellular insulin resistance, chronic inflammation, and metabolic disturbances. Berberine, gypenosides and bifendate are traditional Chinese herbal medicines with multiple pharmacological activities including anti-inflammation, anti-oxidant, metabolism improvement and memory improvement. To investigate whether they have synergistic effect on T2DM metabolic syndrome and associated memory impairment, we measured in this study the effect of a low dose of berberine/gypenosides/bifendate (BGB) co-administration on metabolism and memory performance of T2DM model mice. We found that BGB co-administration ameliorated metabolic abnormalities of both high-fat diet/streptozotocin (STZ)-induced T2DM mice and db/db mice. However, it did not alleviate memory impairment in either type of T2DM model mice. Since neither berberine, gypenosides nor bifendate alone at the low dose is effective, we presume that BGB co-administration has synergistic action on T2DM metabolic syndrome. In addition, our findings suggest that higher doses of BGB might be required to ameliorate memory impairment than metabolic disturbance associated with T2DM.
Collapse
Affiliation(s)
- Meng Zhang
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Qingdao University, Qingdao, Shandong, 266071, China
| | - Jie Li
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Qingdao University, Qingdao, Shandong, 266071, China
| | - Xin Guo
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Qingdao University, Qingdao, Shandong, 266071, China
| | - Xiaoting Wang
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Qingdao University, Qingdao, Shandong, 266071, China
| | - Dongping Shi
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Qingdao University, Qingdao, Shandong, 266071, China
| | - Lin Cui
- Department of Pathology, Qingdao Municipal Hospital, Qingdao University, Qingdao, Shandong, 266071, China
| | - Yu Zhou
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Qingdao University, Qingdao, Shandong, 266071, China.,Institute of Brain Sciences and Related Disorders, Qingdao University, Qingdao, Shandong, 266071, China
| |
Collapse
|
11
|
Azmand MJ, Rajaei Z. Effects of crocin on spatial or aversive learning and memory impairments induced by lipopolysaccharide in rats. AVICENNA JOURNAL OF PHYTOMEDICINE 2021; 11:79-90. [PMID: 33628722 PMCID: PMC7885005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
OBJECTIVE Neuroinflammation and oxidative stress play essential roles in the pathogenesis and progression of neurodegenerative diseases, such as Alzheimer's disease. Crocin, main active constituent of Crocus sativus L. (saffron), possesses anti-inflammatory, anti-apoptotic and anti-oxidative capacity. The aim of the present study was to investigate the neuroprotective effect of crocin on lipopolysaccharide (LPS)-induced learning and memory deficits and neuroinflammation in rats. MATERIALS AND METHODS The animals were randomly classified into four groups, including control, LPS, crocin 50 and crocin 100. The rats were treated with either crocin (50 and 100 mg/kg) or saline for a week. Later, LPS (1 mg/kg, i.p.) or saline was administered, and treatments with crocin or saline were continued for 3 more weeks. The behavioral tasks for spatial and aversive memories were performed by the Morris water maze and passive avoidance tasks from post-injection days 18 to 24. Furthermore, the levels of interleukine-1β, lipid peroxidation and total thiol were assayed in the hippocampus and cerebral cortex. RESULTS Our results demonstrated that treatment of LPS-treated rats with crocin decreased the escape latency in the Morris water maze and increased the time spent in the target quadrant in the probe trial. Moreover, crocin increased step-through latency in the passive avoidance test. However, there was no significant difference in the oxidative and neuroinflammatory responses among the experimental groups. CONCLUSION Pretreatment with crocin attenuates spatial or aversive learning and memory deficits in LPS-treated rats.
Collapse
Affiliation(s)
| | - Ziba Rajaei
- Corresponding Author: Tel:+98-31-37929181, Fax:+98-31-36688597,
| |
Collapse
|
12
|
Shen S, Wang K, Zhi Y, Shen W, Huang L. Gypenosides improves nonalcoholic fatty liver disease induced by high-fat diet induced through regulating LPS/TLR4 signaling pathway. Cell Cycle 2020; 19:3042-3053. [PMID: 33121337 DOI: 10.1080/15384101.2020.1829800] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
Abstract
Background The contents of lipopolysaccharide (LPS) and Toll-like receptor 4 (TLR4) are significantly increased during the progression of nonalcoholic fatty liver disease (NAFLD). The study investigated the role of the LPS/TLR4 signaling pathway in improving gypenosides (Gyp) on NAFLD. Methods NAFLD model were established in rats and treated by Gyp. Pathological changes of liver tissues were observed by Hematoxylin and Eosin (HE) staining. Lipid metabolism and insulin resistance were measured. Expressions of inflammatory factors and protein of LPS/TLR4 downstream pathway were detected by qRT-PCR and Western blotting. THLE-2 cells were treated by free-fatty acid (FFA), Gyp, and LPS, and then transfected with TLR4. Next, cell viability was detected by MTT. Lipid droplet deposition and Triglyceride (TG) content were determined by Oil Red O staining and ELISA. Results Gyp protected fatty liver tissues in NAFLD model, and significantly reversed cholesterol increased by high-fat diet. Moreover, Gyp increased SOD content and decreased the contents of AST, ALT, MDA, HSI, FBG, FINS, HOMA-IR, IL-1β, and TNF-α, and promoted the expressions of TLR4, LPS, MyD88, p-IκBα, and reduced the expressions of p-p65 and IκBα in the NAFLD model. Gyp treatment significantly reduced lipid droplet deposition, increased TG content and MyD88, p-IκBα, p-p65 in FFA-induced liver cells, but LPS and TLR4 greatly reversed improvement of FFA by Gyp. Conclusion Gypenosides could improve liver function, lipid metabolism, insulin resistance, and levels of inflammatory factors in NAFLD model by regulating LPS/TLR4 signaling pathway in vitro and in vivo.
Collapse
Affiliation(s)
- Shuhua Shen
- Disease Prevention and Health Management Center, The First Affiliated Hospital of Zhejiang University of Traditional Chinese Medicine , Hangzhou, Zhejiang Province, China
| | - Kungen Wang
- Department of Traditional Chinese Internal Medicine, The First Affiliated Hospital of Zhejiang University of Traditional Chinese Medicine , Hangzhou, Zhejiang Province, China
| | - Yihui Zhi
- Department of Traditional Chinese Internal Medicine, The First Affiliated Hospital of Zhejiang University of Traditional Chinese Medicine , Hangzhou, Zhejiang Province, China
| | - Wei Shen
- Center of Hospital-made Preparations, The First Affiliated Hospital of Zhejiang University of Traditional Chinese Medicine , Hangzhou, Zhejiang Province, China
| | - Liquan Huang
- Department of Traditional Chinese Internal Medicine, The First Affiliated Hospital of Zhejiang University of Traditional Chinese Medicine , Hangzhou, Zhejiang Province, China
| |
Collapse
|
13
|
Neuroinflammation in CNS diseases: Molecular mechanisms and the therapeutic potential of plant derived bioactive molecules. PHARMANUTRITION 2020. [DOI: 10.1016/j.phanu.2020.100176] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
|
14
|
Wang J, Zhao M, Cheng X, Han Y, Zhao T, Fan M, Zhu L, Yang JL. Dammarane-Type Saponins from Gynostemma pentaphyllum Prevent Hypoxia-Induced Neural Injury through Activation of ERK, Akt, and CREB Pathways. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2020; 68:193-205. [PMID: 31826610 DOI: 10.1021/acs.jafc.9b06659] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Gynostemma pentaphyllum possesses neuroprotective bioactivity. However, the effect of gypenosides on hypoxia-induced neural damage remains obscure. In this study, Gyp, the active fraction extracted from G. pentaphyllum and its bioactive compounds as well as the underlying molecular mechanisms were investigated. Eighteen dammarane-type saponins were isolated from Gyp. The absolute configurations of six unreported compounds (13-18) were assessed via electron capture detection (ECD) analyses. The results of cell viability assay showed that Gyp and its bioactive compounds (13-16 and 18) effectively protected PC12 cells from hypoxia injury. Gyp pretreatment also improved mice spatial memory impairment caused by hypoxia exposure. At the molecular level, Gyp and its bioactive compounds could activate the signaling pathways of ERK, Akt, and CREB in vitro and in vivo. In summary, Gyp and its bioactive compounds could prevent hypoxia-induced injury via ERK, Akt, and CREB signaling pathways.
Collapse
Affiliation(s)
- Jun Wang
- CAS Key Laboratory of Chemistry of Northwestern Plant Resources and Key Laboratory for Natural Medicine of Gansu Province , Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences (CAS) , Lanzhou 730000 , People's Republic of China
- University of Chinese Academy of Sciences , CAS , Beijing 100049 , P. R. China
| | - Ming Zhao
- Institute of Military Cognition and Brain Sciences , Academy of Military Medical Sciences , Beijing 100850 , China
| | - Xiang Cheng
- Institute of Military Cognition and Brain Sciences , Academy of Military Medical Sciences , Beijing 100850 , China
| | - Ying Han
- Institute of Military Cognition and Brain Sciences , Academy of Military Medical Sciences , Beijing 100850 , China
| | - Tong Zhao
- Institute of Military Cognition and Brain Sciences , Academy of Military Medical Sciences , Beijing 100850 , China
| | - Ming Fan
- Institute of Military Cognition and Brain Sciences , Academy of Military Medical Sciences , Beijing 100850 , China
- Co-innovation Center of Neuroregeneration , Nantong University , Nantong 226001 , China
- Beijing Institute for Brain Disorders , Capital Medical University , Beijing 100069 , China
| | - Lingling Zhu
- Institute of Military Cognition and Brain Sciences , Academy of Military Medical Sciences , Beijing 100850 , China
- Co-innovation Center of Neuroregeneration , Nantong University , Nantong 226001 , China
| | - Jun-Li Yang
- CAS Key Laboratory of Chemistry of Northwestern Plant Resources and Key Laboratory for Natural Medicine of Gansu Province , Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences (CAS) , Lanzhou 730000 , People's Republic of China
| |
Collapse
|
15
|
Dietary Supplementation of the Antioxidant Curcumin Halts Systemic LPS-Induced Neuroinflammation-Associated Neurodegeneration and Memory/Synaptic Impairment via the JNK/NF- κB/Akt Signaling Pathway in Adult Rats. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2019; 2019:7860650. [PMID: 31827700 PMCID: PMC6885271 DOI: 10.1155/2019/7860650] [Citation(s) in RCA: 44] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/27/2019] [Revised: 08/23/2019] [Accepted: 09/26/2019] [Indexed: 12/30/2022]
Abstract
Curcumin is a natural polyphenolic compound widely known to have antioxidant, anti-inflammatory, and antiapoptotic properties. In the present study, we explored the neuroprotective effect of curcumin against lipopolysaccharide- (LPS-) induced reactive oxygen species- (ROS-) mediated neuroinflammation, neurodegeneration, and memory deficits in the adult rat hippocampus via regulation of the JNK/NF-κB/Akt signaling pathway. Adult rats were treated intraperitoneally with LPS at a dose of 250 μg/kg for 7 days and curcumin at a dose of 300 mg/kg for 14 days. After 14 days, the rats were sacrificed, and western blotting and ROS and lipid peroxidation assays were performed. For immunohistochemistry and confocal microscopy, the rats were perfused transcardially with 4% paraformaldehyde. In order to verify the JNK-dependent neuroprotective effect of curcumin and to confirm the in vivo results, HT-22 neuronal and BV2 microglial cells were exposed to LPS at a dose of 1 μg/ml, curcumin 100 μg/ml, and SP600125 (a specific JNK inhibitor) 20 μM. Our immunohistochemical, immunofluorescence, and biochemical results revealed that curcumin inhibited LPS-induced oxidative stress by reducing malondialdehyde and 2,7-dichlorofluorescein levels and ameliorating neuroinflammation and neuronal cell death via regulation of the JNK/NF-κB/Akt signaling pathway both in vivo (adult rat hippocampus) and in vitro (HT-22/BV2 cell lines). Moreover, curcumin markedly improved LPS-induced memory impairment in the Morris water maze and Y-maze tasks. Taken together, our results suggest that curcumin may be a potential preventive and therapeutic candidate for LPS-induced ROS-mediated neurotoxicity and memory deficits in an adult rat model.
Collapse
|