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Wu J, Wu J, Xiang W, Gong Y, Feng D, Fang S, Wu Y, Liu Z, Li Y, Chen R, Zhang X, Li B, Chen L, Jin R, Li S, Zhang B, Zhang T, Yin L, Zhou Y, Huang S, Liu N, Xu H, Lian J, Wang Y, Zhou S, Ni Z. Engineering exosomes derived from TNF-α preconditioned IPFP-MSCs enhance both yield and therapeutic efficacy for osteoarthritis. J Nanobiotechnology 2024; 22:555. [PMID: 39261846 PMCID: PMC11391629 DOI: 10.1186/s12951-024-02795-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2024] [Accepted: 08/20/2024] [Indexed: 09/13/2024] Open
Abstract
BACKGROUND The pathogenesis of osteoarthritis (OA) involves the progressive degradation of articular cartilage. Exosomes derived from mesenchymal stem cells (MSC-EXOs) have been shown to mitigate joint pathological injury by attenuating cartilage destruction. Optimization the yield and therapeutic efficacy of exosomes derived from MSCs is crucial for promoting their clinical translation. The preconditioning of MSCs enhances the therapeutic potential of engineered exosomes, offering promising prospects for application by enabling controlled and quantifiable external stimulation. This study aims to address these issues by employing pro-inflammatory preconditioning of MSCs to enhance exosome production and augment their therapeutic efficacy for OA. METHODS The exosomes were isolated from the supernatant of infrapatellar fat pad (IPFP)-MSCs preconditioned with a pro-inflammatory factor, TNF-α, and their production was subsequently quantified. The exosome secretion-related pathways in IPFP-MSCs were evaluated through high-throughput transcriptome sequencing analysis, q-PCR and western blot analysis before and after TNF-α preconditioning. Furthermore, exosomes derived from TNF-α preconditioned IPFP-MSCs (IPFP-MSC-EXOsTNF-α) were administered intra-articularly in an OA mouse model, and subsequent evaluations were conducted to assess joint pathology and gait alterations. The expression of proteins involved in the maintenance of cartilage homeostasis within the exosomes was determined through proteomic analysis. RESULTS The preconditioning with TNF-α significantly enhanced the exosome secretion of IPFP-MSCs compared to unpreconditioned MSCs. The potential mechanism involved the activation of the PI3K/AKT signaling pathway in IPFP-MSCs by TNF-α precondition, leading to an up-regulation of autophagy-related protein 16 like 1(ATG16L1) levels, which subsequently facilitated exosome secretion. The intra-articular administration of IPFP-MSC-EXOsTNF-α demonstrated superior efficacy in ameliorating pathological changes in the joints of OA mice. The preconditioning of TNF-α enhanced the up-regulation of low-density lipoprotein receptor-related protein 1 (LRP1) levels in IPFP-MSC-EXOsTNF-α, thereby exerting chondroprotective effects. CONCLUSION TNF-α preconditioning constitutes an effective and promising method for optimizing the therapeutic effects of IPFP-MSCs derived exosomes in the treatment of OA.
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Affiliation(s)
- Jiangyi Wu
- Plastic Surgery Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100144, China
| | - Jinhui Wu
- Department of Joint Surgery and Sport Medicine, Hunan Provincial People's Hospital, The First Affiliated Hospital of Hunan Normal University, Changsha, 410000, China
| | - Wei Xiang
- Department of Rehabilitation Medicine, Daping Hospital, Army Medical University, Chongqing, 400022, China
| | - Yunquan Gong
- Department of Rehabilitation Medicine, Daping Hospital, Army Medical University, Chongqing, 400022, China
- Department of Orthopedics, Shanghai Hospital, Wanzhou District, Chongqing, 40400, China
| | - Daibo Feng
- Department of Rehabilitation Medicine, Daping Hospital, Army Medical University, Chongqing, 400022, China
| | - Shunzheng Fang
- Department of Rehabilitation Medicine, Daping Hospital, Army Medical University, Chongqing, 400022, China
| | - Yaran Wu
- Department of Clinical Biochemistry, Faculty of Pharmacy and Laboratory Medicine, Army Medical University, Gantaoyan Street, Shapinba District, Chongqing, 400038, China
| | - Zheng Liu
- Department of Joint Surgery and Sport Medicine, Hunan Provincial People's Hospital, The First Affiliated Hospital of Hunan Normal University, Changsha, 410000, China
| | - Yang Li
- War Trauma Medical Center, State Key Laboratory of Trauma and Chemical Poisoning, Army Medical Center, Daping Hospital, Army Medical University, Chongqing, 40038, People's Republic of China
| | - Ran Chen
- War Trauma Medical Center, State Key Laboratory of Trauma and Chemical Poisoning, Army Medical Center, Daping Hospital, Army Medical University, Chongqing, 40038, People's Republic of China
| | - Xiaoqi Zhang
- Department of Rehabilitation Medicine, Daping Hospital, Army Medical University, Chongqing, 400022, China
| | - Bingfei Li
- Department of Rehabilitation Medicine, Daping Hospital, Army Medical University, Chongqing, 400022, China
| | - Lifeng Chen
- Department of Rehabilitation Medicine, Daping Hospital, Army Medical University, Chongqing, 400022, China
| | - Runze Jin
- Department of Rehabilitation Medicine, Daping Hospital, Army Medical University, Chongqing, 400022, China
| | - Song Li
- Center of Bone Metabolism and Repair, Laboratory for Prevention and Rehabilitation of Training Injuries, State Key Laboratory of Trauma, Burns and Combined Injury, Trauma Center, Research Institute of Surgery, Daping Hospital, Army Medical University (Third Military Medical University), Chongqing, 400000, China
| | - Bin Zhang
- Center of Bone Metabolism and Repair, Laboratory for Prevention and Rehabilitation of Training Injuries, State Key Laboratory of Trauma, Burns and Combined Injury, Trauma Center, Research Institute of Surgery, Daping Hospital, Army Medical University (Third Military Medical University), Chongqing, 400000, China
- Rehabilitation Center, Strategic Support Force Xingcheng Special Duty Sanatorium, Xingcheng, 125105, China
| | - Tongyi Zhang
- Department of General Practice, Chinese PLA General Hospital of the Central Theater Command, Wuhan, 430012, China
| | - Lin Yin
- Plastic Surgery Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100144, China
| | - Yizhao Zhou
- Department of Joint Surgery and Sport Medicine, Hunan Provincial People's Hospital, The First Affiliated Hospital of Hunan Normal University, Changsha, 410000, China
| | - Shu Huang
- Department of Joint Surgery and Sport Medicine, Hunan Provincial People's Hospital, The First Affiliated Hospital of Hunan Normal University, Changsha, 410000, China
| | - Ningning Liu
- Department of Laboratory Medicine, The Fifth Clinical Medical College of, Henan University of Chinese Medicine (Zhengzhou People's Hospital), Zhengzhou, 450003, China
| | - Hao Xu
- Department of Laboratory Medicine, The Third Affiliated Hospital of Zhengzhou University, Zhengzhou, 450003, China
| | - Jiqin Lian
- Department of Clinical Biochemistry, Faculty of Pharmacy and Laboratory Medicine, Army Medical University, Gantaoyan Street, Shapinba District, Chongqing, 400038, China
| | - Yongqian Wang
- Plastic Surgery Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100144, China.
| | - Siru Zhou
- War Trauma Medical Center, State Key Laboratory of Trauma and Chemical Poisoning, Army Medical Center, Daping Hospital, Army Medical University, Chongqing, 40038, People's Republic of China.
| | - Zhenhong Ni
- Department of Rehabilitation Medicine, Daping Hospital, Army Medical University, Chongqing, 400022, China.
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2
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Fu P, Chen Y, Wu M, Bao B, Yin X, Chen Z, Zhang M. Effect of ferroptosis on chronic cerebral hypoperfusion in vascular dementia. Exp Neurol 2023; 370:114538. [PMID: 37709116 DOI: 10.1016/j.expneurol.2023.114538] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2023] [Revised: 08/22/2023] [Accepted: 09/10/2023] [Indexed: 09/16/2023]
Abstract
Vascular dementia (VaD) is the second most prevalent type of dementia after Alzheimer's disease and is caused by impaired nerve cell function resulting from cerebrovascular disease and vascular risk factors. Chronic cerebral hypoperfusion (CCH) is a common pathological and physiological state that may result from cerebral ischemia and hypoxia, causing widespread diffuse lesions in the brain parenchyma which leads to progressive nerve damage. Transferrin (TF) and transferrin receptor 1 (TfR1), two proteins involved in iron uptake, were upregulated by CCH, whereas ferroprotein (FPN), a protein involved in iron efflux, was downregulated. This process may involve various mechanisms including tau and iron regulatory proteins (IRP). CCH can also exacerbate lipid peroxidation caused by an iron imbalance by inhibiting glutathione peroxidase 4 (Gpx4) synthesis and some Gpx4 independent pathways through cystine/glutamate transporters (system Xc-), ultimately leading to ferroptosis in nerve cells and accelerating the progression of VaD.
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Affiliation(s)
- Peijie Fu
- Department of Neurology, Clinical Medical School of Jiujiang University, Jiujiang, Jiangxi 332000, China; Jiujiang Clinical Precision Medicine Research Center, Jiujiang, Jiangxi 332000, China
| | - Yanghang Chen
- Department of Neurology, Clinical Medical School of Jiujiang University, Jiujiang, Jiangxi 332000, China; Jiujiang Clinical Precision Medicine Research Center, Jiujiang, Jiangxi 332000, China; Department of Neurology, the Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi 330000, China
| | - Moxin Wu
- Department of Neurology, Clinical Medical School of Jiujiang University, Jiujiang, Jiangxi 332000, China; Jiujiang Clinical Precision Medicine Research Center, Jiujiang, Jiangxi 332000, China
| | - Bing Bao
- Department of Neurology, Clinical Medical School of Jiujiang University, Jiujiang, Jiangxi 332000, China; Jiujiang Clinical Precision Medicine Research Center, Jiujiang, Jiangxi 332000, China
| | - Xiaoping Yin
- Department of Neurology, Clinical Medical School of Jiujiang University, Jiujiang, Jiangxi 332000, China; Jiujiang Clinical Precision Medicine Research Center, Jiujiang, Jiangxi 332000, China
| | - Zhiying Chen
- Department of Neurology, Clinical Medical School of Jiujiang University, Jiujiang, Jiangxi 332000, China; Jiujiang Clinical Precision Medicine Research Center, Jiujiang, Jiangxi 332000, China.
| | - Manqing Zhang
- School of Basic Medicine, Jiujiang University, Jiujiang, Jiangxi 332000, China.
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3
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Kang K, Wang DP, Lv QL, Chen F. VEGF-A ameliorates ischemia hippocampal neural injury via regulating autophagy and Akt/CREB signaling in a rat model of chronic cerebral hypoperfusion. J Stroke Cerebrovasc Dis 2023; 32:107367. [PMID: 37734181 DOI: 10.1016/j.jstrokecerebrovasdis.2023.107367] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2023] [Revised: 09/06/2023] [Accepted: 09/12/2023] [Indexed: 09/23/2023] Open
Abstract
OBJECTIVE Chronic cerebral hypoperfusion (CCH) can cause a series of pathophysiological processes, including neuronal autophagy and apoptosis. VEGF-A has been reported to affect angiogenesis and neurogenesis in many CNS diseases. However, its effects on neuronal autophagy and apoptosis, as well as the underlying mechanisms in CCH remain unclear. METHODS To address these issues, the CCH model was established by permanent bilateral common carotid artery occlusion (2VO). Rats were sacrificed at different stages of CCH. Hippocampal morphological and ultrastructural changes were detected using HE staining and electron microscopy. The immunoreactivities of microtubule-associated protein 1 light chain 3 (LC3) and phospho-cAMP response element binding protein (p-CREB) were examined by immunofluorescence staining. The neuronal apoptosis was detected via TUNEL staining. The levels of LC3-II, Beclin-1, Akt, p-Akt, CREB, p-CREB, Caspase-3, and Bad were accessed by Western blotting. Furthermore, mouse hippocampal HT22 neurons received the oxygen and glucose deprivation (OGD) treatment, VEGF-A treatment, and GSK690693 (an Akt inhibitor) treatment, respectively. RESULTS LC3-II protein started to increase at 3 days of CCH, peaked at 4 weeks of CCH, then decreased. CCH increased the levels of LC3-II, Caspase-3, and Bad, and decreased the levels of p-Akt, CREB, and p-CREB, which were reversed by VEGF-A treatment. VEGF-A also improved CCH-induced neuronal ultrastructural injuries and apoptosis in the hippocampus in vitro. In HT22, the anti-apoptosis and pro-phosphorylation of VEGF-A were reversed by GSK690693. CONCLUSION Present results provide a novel neuroprotective effect of VEGF-A in CCH that is related to the inhibition of neuronal autophagy and activation of the Akt/CREB signaling, suggesting a potential therapeutic strategy for ischemic brain damage.
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Affiliation(s)
- Kai Kang
- School of Public Health, Fudan University, Shanghai 200032, China; Department of Research and Surveillance Evaluation, Shanghai Municipal Center for Health Promotion, Shanghai 200040, China
| | - Da-Peng Wang
- Department of Neurosurgery, Tong Ji Hospital, Tong Ji University School of Medicine, Shanghai, China
| | - Qiao-Li Lv
- Jiangxi Key Laboratory of Translational Cancer Research, Jiangxi Cancer Hospital, Jiangxi 330029, China.
| | - Feng Chen
- Department of Neurosurgery, Tong Ji Hospital, Tong Ji University School of Medicine, Shanghai, China
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Rajeev V, Chai YL, Poh L, Selvaraji S, Fann DY, Jo DG, De Silva TM, Drummond GR, Sobey CG, Arumugam TV, Chen CP, Lai MKP. Chronic cerebral hypoperfusion: a critical feature in unravelling the etiology of vascular cognitive impairment. Acta Neuropathol Commun 2023; 11:93. [PMID: 37309012 DOI: 10.1186/s40478-023-01590-1] [Citation(s) in RCA: 20] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2023] [Accepted: 05/25/2023] [Indexed: 06/14/2023] Open
Abstract
Vascular cognitive impairment (VCI) describes a wide spectrum of cognitive deficits related to cerebrovascular diseases. Although the loss of blood flow to cortical regions critically involved in cognitive processes must feature as the main driver of VCI, the underlying mechanisms and interactions with related disease processes remain to be fully elucidated. Recent clinical studies of cerebral blood flow measurements have supported the role of chronic cerebral hypoperfusion (CCH) as a major driver of the vascular pathology and clinical manifestations of VCI. Here we review the pathophysiological mechanisms as well as neuropathological changes of CCH. Potential interventional strategies for VCI are also reviewed. A deeper understanding of how CCH can lead to accumulation of VCI-associated pathology could potentially pave the way for early detection and development of disease-modifying therapies, thus allowing preventive interventions instead of symptomatic treatments.
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Affiliation(s)
- Vismitha Rajeev
- Department of Pharmacology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
- Memory Aging and Cognition Centre, National University Health System, Singapore, Singapore
| | - Yuek Ling Chai
- Department of Pharmacology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
- Memory Aging and Cognition Centre, National University Health System, Singapore, Singapore
| | - Luting Poh
- Department of Pharmacology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
- Memory Aging and Cognition Centre, National University Health System, Singapore, Singapore
| | - Sharmelee Selvaraji
- Department of Pharmacology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
- Memory Aging and Cognition Centre, National University Health System, Singapore, Singapore
- Integrative Sciences and Engineering Programme, NUS Graduate School, National University of Singapore, Singapore, Singapore
| | - David Y Fann
- Department of Pharmacology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
| | - Dong-Gyu Jo
- School of Pharmacy, Sungkyunkwan University, Suwon, Republic of Korea
| | - T Michael De Silva
- Department of Physiology, Anatomy and Microbiology, La Trobe University, Bundoora, Victoria, Australia
| | - Grant R Drummond
- Department of Physiology, Anatomy and Microbiology, La Trobe University, Bundoora, Victoria, Australia
| | - Christopher G Sobey
- Department of Physiology, Anatomy and Microbiology, La Trobe University, Bundoora, Victoria, Australia
| | - Thiruma V Arumugam
- School of Pharmacy, Sungkyunkwan University, Suwon, Republic of Korea
- Department of Physiology, Anatomy and Microbiology, La Trobe University, Bundoora, Victoria, Australia
| | - Christopher P Chen
- Department of Pharmacology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
- Memory Aging and Cognition Centre, National University Health System, Singapore, Singapore
- NUS Healthy Longevity Translational Research Programme, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
| | - Mitchell K P Lai
- Department of Pharmacology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore.
- Memory Aging and Cognition Centre, National University Health System, Singapore, Singapore.
- NUS Healthy Longevity Translational Research Programme, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore.
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5
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Hosseini Adarmanabadi SMH, Karami Gilavand H, Taherkhani A, Sadat Rafiei SK, Shahrokhi M, Faaliat S, Biabani M, Abil E, Ansari A, Sheikh Z, Poudineh M, Khalaji A, ShojaeiBaghini M, Koorangi A, Deravi N. Pharmacotherapeutic potential of walnut (Juglans spp.) in age-related neurological disorders. IBRO Neurosci Rep 2023; 14:1-20. [PMID: 36507190 PMCID: PMC9727645 DOI: 10.1016/j.ibneur.2022.10.015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2022] [Revised: 09/30/2022] [Accepted: 10/31/2022] [Indexed: 11/27/2022] Open
Abstract
Global and regional trends of population aging spotlight major public health concerns. As one of the most common adverse prognostic factors, advanced age is associated with a remarkable incidence risk of many non-communicable diseases, affecting major organ systems of the human body. Age-dependent factors and molecular processes can change the nervous system's normal function and lead to neurodegenerative disorders. Oxidative stress results from of a shift toward reactive oxygen species (ROS) production in the equilibrium between ROS generation and the antioxidant defense system. Oxidative stress and neuroinflammation caused by Amyloid-ß protein deposition in the human brain are the most likely pathogenesis of Alzheimer's disease (AD). Walnut extracts could reduce Amyloid-ß fibrillation and aggregation, indicating their beneficial effects on memory and cognition. Walnut can also improve movement disabilities in Parkinson's disease due to their antioxidant and neuroprotective effect by reducing ROS and nitric oxide (NO) generation and suppressing oxidative stress. It is noteworthy that Walnut compounds have potential antiproliferative effects on Glioblastoma (the most aggressive primary cerebral neoplasm). This effective therapeutic agent can stimulate apoptosis of glioma cells in response to oxidative stress, concurrent with preventing angiogenesis and migration of tumor cells, improving the quality of life and life expectancy of patients with glioblastoma. Antioxidant Phenolic compounds of the Walnut kernel could explain the significant anti-convulsion ability of Walnut to provide good prevention and treatment for epileptic seizures. Moreover, the anti-inflammatory effect of Walnut oil could be beneficial in treating multiple sclerosis. In this study, we review the pharmaceutical properties of Walnut in age-related neurological disorders.
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Affiliation(s)
| | - Helia Karami Gilavand
- Student Research Committee, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Amirreza Taherkhani
- Student Research Committee, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Seyyed Kiarash Sadat Rafiei
- Student Research Committee, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | | | - Sara Faaliat
- Faculty of Medicine, Mazandaran University of Medical Sciences, Sari, Iran
| | - Morteza Biabani
- Faculty of Medicine, Mazandaran University of Medical Sciences, Sari, Iran
| | - Elaheh Abil
- Chemical Engineering Department, Faculty of Engineering, Ferdowsi University of Mashhad (FUM), Mashhad, Iran
| | - Akram Ansari
- Laboratory Science, Hormozgan University of Medical Science, Bandar Abbas, Iran
| | - Zahra Sheikh
- Student Research Committee, School of medicine, Babol University of Medical Sciences, Babol, Iran
| | | | | | - Mahdie ShojaeiBaghini
- Medical Informatics, Research Center, Institute for Futures Studies in Health, Kerman, Iran
| | - Amirhosein Koorangi
- Student Research Committee, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Niloofar Deravi
- Student Research Committee, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
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Topcu A, Saral S, Ozturk A, Saral O, Kaya AK. The effect of the calcium channel blocker nimodipine on hippocampal BDNF/Ach levels in rats with experimental cognitive impairment. Neurol Res 2023; 45:544-553. [PMID: 36598971 DOI: 10.1080/01616412.2022.2164452] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
OBJECTIVE Alzheimer's disease (AD) occurs in approximately 10% to 30% of individuals aged 65 or older worldwide. Novel therapeutic agents therefore need to be discovered in addition to traditional medications. Nimodipine appears to possess the potential to reverse cognitive impairment-induced dysfunction in learning and memory through its regulatory effect on the brain-derived neurotrophic factor (BDNF), acetylcholine (Ach), and acetylcholinesterase (AChE) pathway in the hippocampus and prefrontal cortex. METHODS Twenty-four male Sprague Dawley rats weighing 380 ± 10 g were used for behavioral and biochemical analyses. These were randomly and equally assigned into one of three groups. Group 1 received saline solution alone via the intraperitoneal (i.p) route, and Group 2 received 1 mg/kg/day i.p. scopolamine once a day for three weeks for induction of learning and memory impairments. In Group 3, 10 mg/kg/day nimodipine was prepared in tap water and administered orally every day for three weeks, followed after 30 min by 1 mg/kg/day scopolamine i.p. Behavior was evaluated using the Morris Water Maze test. BDNF, ACh, and AChE levels were determined using the ELISA test in line with the manufacturer's instructions. RESULTS Nimodipine treatment significantly increased the time spent in the target quadrant and the number of entries into the target quadrant compared to the scopolamine group alone. Additionally, BDNF and ACh levels in the hippocampus and prefrontal cortex decreased following 20-day scopolamine administration, while AChE activation increased. CONCLUSION Nimodipine exhibited potentially beneficial effects by ameliorating cognitive decline following scopolamine administration in the hippocampus and prefrontal cortex.
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Affiliation(s)
- Atilla Topcu
- Department of Pharmacology, Faculty of Medicine, Recep Tayyip Erdogan University, Rize, Türkiye
| | - Sinan Saral
- Department of Physiology, Faculty of Medicine, Recep Tayyip Erdogan University, Rize, Türkiye
| | - Aykut Ozturk
- Department of Pharmacology, Faculty of Medicine, Recep Tayyip Erdogan University, Rize, Türkiye
| | - Ozlem Saral
- Department of Nutrition and Dietetics, Faculty of Health Sciences, Recep Tayyip Erdogan University, Rize, Türkiye
| | - Ali Koray Kaya
- Department of Physiology, Faculty of Medicine, Recep Tayyip Erdogan University, Rize, Türkiye
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7
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Yuan FY, Ju C, Zang CX, Liu H, Shang MY, Ning JW, Yang Y, Ma JW, Li G, Yu Y, Yao XS, Bao XQ, Zhang D. Gardenia jasminoides Extract GJ-4 Alleviates Memory Deficiency of Vascular Dementia in Rats through PERK-Mediated Endoplasmic Reticulum Stress Pathway. THE AMERICAN JOURNAL OF CHINESE MEDICINE 2022; 51:53-72. [PMID: 36458485 DOI: 10.1142/s0192415x23500040] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/05/2022]
Abstract
Endoplasmic reticulum stress (ERS) is involved in the pathological process of vascular dementia (VD). GJ-4 is extracted from Gardenia jasminoides J. Ellis and has been reported to have protective roles in ischemia-related brain damage. However, the role of GJ-4 in ERS has not been elucidated. We established a VD rat model through bilateral common carotid arteries occlusion (2-VO). The rats were intragastrically administrated with GJ-4 (10, 25, and 50[Formula: see text]mg/kg) and nimodipine (10[Formula: see text]mg/kg). Data from a Morris water maze test showed that GJ-4 could significantly alleviate learning and memory deficits in VD rats. Nissl and cleaved caspase-3 staining revealed that GJ-4 can inhibit apoptosis and thus exert a protective role in the brain of 2-VO rats. Western blot results suggested that GJ-4 significantly reduced ERS-related protein expression and inhibited apoptosis through suppression of the PERK/eIF2[Formula: see text]/ATF4/CHOP signaling pathway. For in vitro studies, the oxygen-glucose deprivation (OGD) SH-SY5Y model was employed. Western blot and Hoechst 33342/PI double staining were utilized to explore the effects of crocetin, the main active metabolite of GJ-4. Like GJ-4 in vivo, crocetin in vitro also decreased ERS-related protein expression and inhibited the activation of the PERK/eIF2[Formula: see text]/ATF4/CHOP signaling pathway. Thus, crocetin exerted similar protective roles on OGD challenged SH-SY5Y cells in vitro. In summary, GJ-4 and crocetin reduce the ERS in the brain of VD rats and SY5Y cells subjected to OGD and inhibit neuronal apoptosis through suppression of the PERK/eIF2[Formula: see text]/ATF4/CHOP pathway, suggesting that GJ-4 may be useful for the treatment of VD.
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Affiliation(s)
- Fang-Yu Yuan
- State Key Laboratory of Bioactive Substrate and Function of Natural Medicine, Institute of Materica Medica, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing 100050, P. R. China
| | - Cheng Ju
- State Key Laboratory of Bioactive Substrate and Function of Natural Medicine, Institute of Materica Medica, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing 100050, P. R. China
| | - Cai-Xia Zang
- State Key Laboratory of Bioactive Substrate and Function of Natural Medicine, Institute of Materica Medica, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing 100050, P. R. China
| | - Hui Liu
- State Key Laboratory of Bioactive Substrate and Function of Natural Medicine, Institute of Materica Medica, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing 100050, P. R. China
| | - Mei-Yu Shang
- State Key Laboratory of Bioactive Substrate and Function of Natural Medicine, Institute of Materica Medica, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing 100050, P. R. China
| | - Jing-Wen Ning
- State Key Laboratory of Bioactive Substrate and Function of Natural Medicine, Institute of Materica Medica, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing 100050, P. R. China
| | - Yang Yang
- State Key Laboratory of Bioactive Substrate and Function of Natural Medicine, Institute of Materica Medica, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing 100050, P. R. China
| | - Jing-Wei Ma
- State Key Laboratory of Bioactive Substrate and Function of Natural Medicine, Institute of Materica Medica, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing 100050, P. R. China
| | - Gen Li
- State Key Laboratory of Bioactive Substrate and Function of Natural Medicine, Institute of Materica Medica, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing 100050, P. R. China
| | - Yang Yu
- Institute of TCM and Natural Products, College of Pharmacy, Jinan University, Guangzhou, Guangdong Province 510632, P. R. China
| | - Xin-Sheng Yao
- Institute of TCM and Natural Products, College of Pharmacy, Jinan University, Guangzhou, Guangdong Province 510632, P. R. China
| | - Xiu-Qi Bao
- State Key Laboratory of Bioactive Substrate and Function of Natural Medicine, Institute of Materica Medica, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing 100050, P. R. China
| | - Dan Zhang
- State Key Laboratory of Bioactive Substrate and Function of Natural Medicine, Institute of Materica Medica, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing 100050, P. R. China
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8
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Peng D, Qiao HZ, Tan HY, Wang YX, Luo D, Qiao LJ, Cai YF, Zhang SJ, Wang Q, Guan L. Ligustilide ameliorates cognitive impairment via AMPK/SIRT1 pathway in vascular dementia rat. Metab Brain Dis 2022; 37:1401-1414. [PMID: 35420377 DOI: 10.1007/s11011-022-00947-0] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/13/2021] [Accepted: 02/24/2022] [Indexed: 11/29/2022]
Abstract
Vascular dementia (VaD) is the second cause of dementia after Alzheimer's disease. Ligustilide (LIG) is one of the main active ingredients of traditional Chinese medicines, such as Angelica. Studies have reported that LIG could protect against VaD. However, the mechanism is still confused. In this study, we employed a bilateral common carotid artery occlusion rat model to study. LIG (20 or 40 mg/kg/day) and Nimodipine (20 mg/kg) were orally administered to the VaD rats for four weeks. Morris water maze test showed that LIG effectively ameliorated learning and memory impairment in VaD rats. LIG obviously reduced neuronal oxidative stress damage and the level of homocysteine in the brain of VaD rats. Western blot results showed that pro-apoptotic protein Bax and cleaved caspase 3 increased and anti-apoptotic protein Bcl-2 decreased in the hippocampi of VaD rats. But after LIG treatment, these changes were reversed. Moreover, Nissl staining result showed that LIG could reduce neuronal degeneration in VaD rats. Furthermore, LIG enhanced the expressions of P-AMPK and Sirtuin1(SIRT1) in VaD rats. In conclusion, these studies indicated that LIG could ameliorate cognitive impairment in VaD rats, which might be related to AMPK/SIRT1 pathway activation.
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Affiliation(s)
- Dong Peng
- College of Basic Medicine, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Han-Zi Qiao
- Department of Neurology, Guangdong Provincial Hospital of Chinese Medicine, Guangzhou, China
- Department of Neurology, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Hong-Yu Tan
- Science and Technology Innovation Center, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Yi-Xue Wang
- College of Basic Medicine, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Dan Luo
- Science and Technology Innovation Center, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Li-Jun Qiao
- Department of Neurology, Guangdong Provincial Hospital of Chinese Medicine, Guangzhou, China
- Department of Neurology, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Ye-Feng Cai
- Department of Neurology, Guangdong Provincial Hospital of Chinese Medicine, Guangzhou, China
- Department of Neurology, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Shi-Jie Zhang
- Department of Neurology, Guangdong Provincial Hospital of Chinese Medicine, Guangzhou, China.
- Department of Neurology, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, China.
| | - Qi Wang
- Science and Technology Innovation Center, Guangzhou University of Chinese Medicine, Guangzhou, China.
| | - Li Guan
- College of Basic Medicine, Guangzhou University of Chinese Medicine, Guangzhou, China.
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Li ML, Peng Y, An Y, Li GY, Lan Y. LY395756 promotes NR2B expression via activation of AKT/CREB signaling in the juvenile methylazoxymethanol mice model of schizophrenia. Brain Behav 2022; 12:e2466. [PMID: 35025141 PMCID: PMC8865150 DOI: 10.1002/brb3.2466] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/27/2021] [Revised: 09/27/2021] [Accepted: 11/06/2021] [Indexed: 12/21/2022] Open
Abstract
INTRODUCTION Synaptic N-methyl-d-aspartate receptor subtype 2B(NR2B) is significantly reduced in prefrontal cortex (PFC) in the neurodevelopmental methylazoxymethanol (MAM) model of schizophrenia (SCZ). Recent research has shown that LY395756 can effectively restore NR2B levels and improve cognitive performance in juvenile MAM mice model. However, the underlying mechanisms of these beneficial effects remain unclear. MATERIALS AND METHODS Juvenile MAM mice model of SCZ is used in our study. Synaptic membrane protein levels were examined by western blotting under different treatment conditions. Interaction of cAMP-response element binding protein (CREB) and the promoter of NR2B was detected by the chromatin immunoprecipitation (ChIP) assay. Further examination of signaling pathway that mediates NR2B expression was also investigated by western blotting. RESULTS In the PFC of the juvenile MAM mice schizophrenia model, CREB was found to directly bind with the promoter of NR2B. LY395756 activated the phosphorylation of AKT. Phosphorylated AKT subsequently induced the phosphorylation of CREB, and the activated CREB promoted the expression of NR2B. Subsequent experiments showed that the dephosphorylation of CREB induced by protein phosphatase 1 (PP1) can inhibit NR2B levels. Taken together, these findings support that the AKT/CREB signaling pathway is essential for the promoting effect of LY395756 on synaptic NR2B in PFC in juvenile MAM mice SCZ model. CONCLUSIONS Our investigation has identified a novel mechanism by which LY395756 increases NR2B expression in juvenile MAM mice SCZ model. The AKT/CREB signaling pathway warrants further research as a potential direction for clinical treatment of SCZ.
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Affiliation(s)
- Meng-Lin Li
- Department of Rehabilitation, Guangzhou First People's Hospital, School of Medicine, South China University of Technology, Guangzhou, China
| | - Yuan Peng
- Department of Rehabilitation, Guangzhou First People's Hospital, School of Medicine, South China University of Technology, Guangzhou, China
| | - Ying An
- Department of Rehabilitation, Guangzhou First People's Hospital, School of Medicine, South China University of Technology, Guangzhou, China
| | - Guo-Yan Li
- Department of Rehabilitation, Guangzhou First People's Hospital, School of Medicine, South China University of Technology, Guangzhou, China
| | - Yue Lan
- Department of Rehabilitation, Guangzhou First People's Hospital, School of Medicine, South China University of Technology, Guangzhou, China
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Isoform-selective HDAC Inhibitor Mocetinostat (MGCD0103) Alleviates Myocardial Ischemia/Reperfusion Injury via Mitochondrial Protection through the HDACs/CREB/PGC-1α Signaling Pathway. J Cardiovasc Pharmacol 2021; 79:217-228. [PMID: 34983914 DOI: 10.1097/fjc.0000000000001174] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/14/2021] [Accepted: 09/28/2021] [Indexed: 11/25/2022]
Abstract
ABSTRACT Over the past decade, histone deacetylases (HDACs) has been proven to manipulate development and exacerbation of cardiovascular diseases, including myocardial ischemia/reperfusion injury (MIRI), cardiac hypertrophy, ventricular remodeling, myocardial fibrosis. Inhibition of histone deacetylases, especially class-I HDACs, is potent to protection of ischemic myocardium after ischemia/reperfusion. Herein, we examine whether mocetinostat (MGCD0103, MOCE), a class-I selective HDAC inhibitor in phase-II clinical trial, conducts cardioprotection under ischemia/reperfusion (I/R) in vivo and vitro, if so, reveal its potential pharmacological mechanism to provide an experimental and theoretical basis for mocetinostat usage in a clinical setting. HCMs were exposed to hypoxia and reoxygenation (H/R), with or without mocetinostat treatment. H/R reduced mitochondrial membrane potential (MMP) and induced HCMs apoptosis. Mocetinostat pre-treatment reversed these H/R-induced mitochondrial damage and cellular apoptosis and upregulated CREB, p-CREB and PGC-1α in HCMs during H/R. Transfection with siRNA against PGC-1α or CREB abolished the protective effects of mocetinostat on cardiomyocytes undergoing H/R. In vivo, mocetinostat was demonstrated to protect myocardial injury posed by myocardial ischemia/reperfusion (I/R) via activation of CREB and upregulation of PGC-1α. Mocetinostat (MGCD0103) can protect myocardium from ischemia/reperfusion injury through mitochondrial protection mediated by CREB/PGC-1α pathway. Therefore, activation of the CREB/PGC-1α signaling pathway via inhibition of Class-I HDACs may be a promising new therapeutic strategy for alleviating myocardial reperfusion injury.
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11
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Niu X, Li M, Gao Y, Xu G, Dong X, Chu B, Lv P. DL-3-n-butylphthalide suppressed autophagy and promoted angiogenesis in rats with vascular dementia by activating the Shh/Ptch1 signaling pathway. Neurosci Lett 2021; 765:136266. [PMID: 34571087 DOI: 10.1016/j.neulet.2021.136266] [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: 05/17/2021] [Revised: 09/06/2021] [Accepted: 09/22/2021] [Indexed: 10/20/2022]
Abstract
DL-3-n-butylphthalide (NBP) has neuroprotective effect on chronic cerebral hypoperfusion animals. Here, we explored the role and underlying mechanism of NBP on autophagy and angiogenesis in rats with vascular dementia (VD). Adult male Sprague-Dawley (SD) rats were subjected to permanent bilateral occlusion of the common carotid arteries (2VO) to establish VD model. These rats were randomly divided into five groups: sham, model, NBP120 (120 mg/kg), Shh siRNA (50 nM), and NBP120 + Shh siRNA groups. Our results showed that NBP treatment attenuated memory damage in rats with VD, as demonstrated by Morris water maze tests. Immunofluorescence (IF) assay revealed that NBP induced neuronal process length and neuronal activity in hippocampus, which were reversed by Shh silencing. Furthermore, NBP treatment also reduced the expression of autophagy marker proteins B-cell lymphoma-2 interacting protein 1 (Beclin 1) and microtubule-associated protein 1 light chain 3 (LC3), which were further enhanced by Shh silencing. Meanwhile, NBP promoted the angiogenesis, which was accompanied by upregulated vascular endothelial growth factor (VEGF), fibroblast growth factor (FGF)-1, and Angiopoietin (Ang) expression in the hippocampus. And Shh siRNA co-treatment blocked the angiogenesis induced by NBP. Altogether, our results established that NBP treatment suppressed autophagy and improved angiogenesis and neurobehavioral recovery in VD rats partly by activating the Shh/Ptch1 signaling pathway.
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Affiliation(s)
- Xiaoli Niu
- Department of Neurology, Hebei General Hospital, Shijiazhuang, China
| | - Meixi Li
- Department of Neurology, Hebei General Hospital, Shijiazhuang, China
| | - Yaran Gao
- Department of Neurology, Hebei General Hospital, Shijiazhuang, China; Department of Neurology, Hebei Medical University, Shijiazhuang, China
| | - Guodong Xu
- Department of Neurology, Hebei General Hospital, Shijiazhuang, China
| | - Xiaoli Dong
- Department of Neurology, Hebei General Hospital, Shijiazhuang, China
| | - Bao Chu
- Department of Neurology, Hebei General Hospital, Shijiazhuang, China
| | - Peiyuan Lv
- Department of Neurology, Hebei General Hospital, Shijiazhuang, China.
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12
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Role of hippocampal NF-κB and GluN2B in the memory acquisition impairment of experiences gathered prior to cocaine administration in rats. Sci Rep 2021; 11:20033. [PMID: 34625609 PMCID: PMC8501066 DOI: 10.1038/s41598-021-99448-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2020] [Accepted: 09/16/2021] [Indexed: 12/24/2022] Open
Abstract
Cocaine can induce severe neurobehavioral changes, among others, the ones involved in learning and memory processes. It is known that during drug consumption, cocaine-associated memory and learning processes take place. However, much less is known about the effects of this drug upon the mechanisms involved in forgetting.The present report focuses on the mechanisms by which cocaine affects memory consolidation of experiences acquired prior to drug administration. We also study the involvement of hippocampus in these processes, with special interest on the role of Nuclear factor kappa B (NF-κB), N-methyl-D-aspartate glutamate receptor 2B (GluN2B), and their relationship with other proteins, such as cyclic AMP response element binding protein (CREB). For this purpose, we developed a rat experimental model of chronic cocaine administration in which spatial memory and the expression or activity of several proteins in the hippocampus were assessed after 36 days of drug administration. We report an impairment in memory acquisition of experiences gathered prior to cocaine administration, associated to an increase in GluN2B expression in the hippocampus. We also demonstrate a decrease in NF-κB activity, as well as in the expression of the active form of CREB, confirming the role of these transcription factors in the cocaine-induced memory impairment.
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Li Z, You M, Che X, Dai Y, Xu Y, Wang Y. Perinatal exposure to BDE-47 exacerbated autistic-like behaviors and impairments of dendritic development in a valproic acid-induced rat model of autism. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2021; 212:112000. [PMID: 33550075 DOI: 10.1016/j.ecoenv.2021.112000] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/21/2020] [Revised: 01/24/2021] [Accepted: 01/26/2021] [Indexed: 05/05/2023]
Abstract
Perinatal exposure to polybrominated diphenyl ethers (PBDEs) may be a potential risk factor for autism spectrum disorders (ASD). BDE-47 is one of the most common PBDEs and poses serious health hazards on the central nervous system (CNS). However, effects of perinatal exposure to BDE-47 on social behaviors and the potential mechanisms are largely unexplored. Thus, we aimed to investigate whether BDE-47 exposure during gestation and lactation led to autistic-like behaviors in offspring rats in the present study. Valproic acid (VPA), which is widely used to establish animal model of ASD, was also adopted to induce autistic-like behaviors. A battery of tests was conducted to evaluate social and repetitive behaviors in offspring rats. We found that perinatal exposure to BDE-47 caused mild autistic-like behaviors in offspring, which were similar but less severe to those observed in pups maternally exposed to VPA. Moreover, perinatal exposure to BDE-47 aggravated the autistic-like behaviors in pups maternally exposed to VPA. Abnormal dendritic development is known to be deeply associated with autistic-like behaviors. Golgi-Cox staining was used to observe the morphological characteristics of dendrites in the prefrontal cortex of pups. We found perinatal exposure to BDE-47 reduced dendritic length and complexity of branching pattern, and spine density in the offspring prefrontal cortex, which may contribute to autistic-like behaviors observed in the present study. Perinatal exposure to BDE-47 also exacerbated the impairments of dendritic development in pups maternally exposed to VPA. Besides, our study also provided the evidence that the inhibition of BDNF-CREB signaling, a key regulator of dendritic development, may be involved in the dendritic impairments induced by perinatal exposure to BDE-47 and/or VPA, and the consequent autistic-like behaviors.
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Affiliation(s)
- Zixuan Li
- Department of Occupational and Environmental Health, School of Public Health, China Medical University, Shenyang, Liaoning, People's Republic of China
| | - Mingdan You
- Department of Occupational and Environmental Health, School of Public Health, China Medical University, Shenyang, Liaoning, People's Republic of China
| | - Xiaoyu Che
- Department of Occupational and Environmental Health, School of Public Health, China Medical University, Shenyang, Liaoning, People's Republic of China
| | - Yufeng Dai
- Department of Occupational and Environmental Health, School of Public Health, China Medical University, Shenyang, Liaoning, People's Republic of China
| | - Yuanyuan Xu
- Program of Environmental Toxicology, School of Public Health, China Medical University, Shenyang, Liaoning, People's Republic of China
| | - Yi Wang
- Department of Occupational and Environmental Health, School of Public Health, China Medical University, Shenyang, Liaoning, People's Republic of China.
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14
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Son DB, Choi W, Kim M, Go EJ, Jeong D, Park CK, Kim YH, Lee H, Suh JW. Decursin Alleviates Mechanical Allodynia in a Paclitaxel-Induced Neuropathic Pain Mouse Model. Cells 2021; 10:cells10030547. [PMID: 33806325 PMCID: PMC8001788 DOI: 10.3390/cells10030547] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2020] [Revised: 02/23/2021] [Accepted: 02/23/2021] [Indexed: 12/17/2022] Open
Abstract
Chemotherapy-induced neuropathic pain (CINP) is a severe adverse effect of platinum- and taxane-derived anticancer drugs. The pathophysiology of CINP includes damage to neuronal networks and dysregulation of signal transduction due to abnormal Ca2+ levels. Therefore, methods that aid the recovery of neuronal networks could represent a potential treatment for CINP. We developed a mouse model of paclitaxel-induced peripheral neuropathy, representing CINP, to examine whether intrathecal injection of decursin could be effective in treating CINP. We found that decursin reduced capsaicin-induced intracellular Ca2+ levels in F11 cells and stimulated neurite outgrowth in a concentration-dependent manner. Decursin directly reduced mechanical allodynia, and this improvement was even greater with a higher frequency of injections. Subsequently, we investigated whether decursin interacts with the transient receptor potential vanilloid 1 (TRPV1). The web server SwissTargetPrediction predicted that TRPV1 is one of the target proteins that may enable the effective treatment of CINP. Furthermore, we discovered that decursin acts as a TRPV1 antagonist. Therefore, we demonstrated that decursin may be an important compound for the treatment of paclitaxel-induced neuropathic pain that functions via TRPV1 inhibition and recovery of damaged neuronal networks.
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Affiliation(s)
- Dang Bao Son
- Center for Nutraceutical and Pharmaceutical Materials, Myongji University, Yongin 17058, Korea; (D.B.S.); (W.C.); (D.J.)
| | - Woosik Choi
- Center for Nutraceutical and Pharmaceutical Materials, Myongji University, Yongin 17058, Korea; (D.B.S.); (W.C.); (D.J.)
| | - Mingu Kim
- Gachon Pain Center and Department of Physiology, College of Medicine, Gachon University, Incheon 21999, Korea; (M.K.); (E.J.G.); (C.-K.P.)
- Department of Health Sciences and Technology, GAIHST, Gachon University, Incheon 21999, Korea
| | - Eun Jin Go
- Gachon Pain Center and Department of Physiology, College of Medicine, Gachon University, Incheon 21999, Korea; (M.K.); (E.J.G.); (C.-K.P.)
| | - Dabeen Jeong
- Center for Nutraceutical and Pharmaceutical Materials, Myongji University, Yongin 17058, Korea; (D.B.S.); (W.C.); (D.J.)
| | - Chul-Kyu Park
- Gachon Pain Center and Department of Physiology, College of Medicine, Gachon University, Incheon 21999, Korea; (M.K.); (E.J.G.); (C.-K.P.)
- Department of Health Sciences and Technology, GAIHST, Gachon University, Incheon 21999, Korea
| | - Yong Ho Kim
- Gachon Pain Center and Department of Physiology, College of Medicine, Gachon University, Incheon 21999, Korea; (M.K.); (E.J.G.); (C.-K.P.)
- Department of Health Sciences and Technology, GAIHST, Gachon University, Incheon 21999, Korea
- Correspondence: (Y.H.K.); (H.L.); (J.-W.S.); Tel.: +82-32-899-6115 (Y.H.K.); +82-31-330-6799 (H.L.); +82-31-330-6881 (J.-W.S.)
| | - Hanki Lee
- Center for Nutraceutical and Pharmaceutical Materials, Myongji University, Yongin 17058, Korea; (D.B.S.); (W.C.); (D.J.)
- Correspondence: (Y.H.K.); (H.L.); (J.-W.S.); Tel.: +82-32-899-6115 (Y.H.K.); +82-31-330-6799 (H.L.); +82-31-330-6881 (J.-W.S.)
| | - Joo-Won Suh
- Center for Nutraceutical and Pharmaceutical Materials, Myongji University, Yongin 17058, Korea; (D.B.S.); (W.C.); (D.J.)
- Correspondence: (Y.H.K.); (H.L.); (J.-W.S.); Tel.: +82-32-899-6115 (Y.H.K.); +82-31-330-6799 (H.L.); +82-31-330-6881 (J.-W.S.)
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15
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Kusakabe M, Hasegawa Y. Nimodipine promotes neurite outgrowth and protects against neurotoxicity in PC12 cells. IRANIAN JOURNAL OF BASIC MEDICAL SCIENCES 2021; 24:51-57. [PMID: 33643570 PMCID: PMC7894639 DOI: 10.22038/ijbms.2020.48567.11152] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 05/08/2020] [Accepted: 11/07/2020] [Indexed: 11/06/2022]
Abstract
OBJECTIVES Nimodipine is an L-type voltage-dependent calcium channel (VDCC) antagonist. However, the actions of nimodipine except calcium blocking are poorly understood. This study aimed to investigate the effect of nimodipine on neurite outgrowth and neuroprotection in vitro. MATERIALS AND METHODS After PC12 cells were treated with different concentrations of nimodipine, neurite outgrowth was estimated using the ImageJ software. Neuroprotective effects of nimodipine against H2O2 and calcium ionophore-induced neurotoxicity were investigated using (3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay. In addition, the activation of extracellular signal-regulated kinase (ERK) and cyclic AMP-response element-binding protein (CREB) pathway was investigated for clarifying the action mechanism of nimodipine. RESULTS Nimodipine treatment at doses of higher than 10 µM induced neurite outgrowth in the cells. Additionally, VDCC knockdown by siRNA significantly suppressed the nimodipine-induced neurite outgrowth in PC12 cells, suggesting that the drug promotes neurite outgrowth by binding to VDCC. H2O2 and calcium ionophore induce oxidative and calcium stress in PC12 cells. Nimodipine exhibited neuroprotective effects against H2O2- and calcium ionophore-induced neurotoxicity by increasing the mRNA expression levels of neurotrophic factors, calcium-binding proteins, and antioxidants that are transcribed by CREB activation. CONCLUSION This is the first report that nimodipine induces neurite outgrowth and exerts its neuroprotective activity through the ERK/CREB signaling pathway in PC12 cells.
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Affiliation(s)
- Miduki Kusakabe
- College of Environmental Technology, Muroran Institute of Technology, 27-1 Mizumoto, Muroran 050-8585, Japan
| | - Yasushi Hasegawa
- College of Environmental Technology, Muroran Institute of Technology, 27-1 Mizumoto, Muroran 050-8585, Japan
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16
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Ishizuka T, Nagata W, Nomura-Takahashi S, Satoh Y. Effects of oxidized low-density lipoprotein on differentiation of mouse neural progenitor cells into neural cells. Eur J Pharmacol 2020; 888:173456. [DOI: 10.1016/j.ejphar.2020.173456] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2020] [Revised: 07/31/2020] [Accepted: 07/31/2020] [Indexed: 12/18/2022]
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17
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Yang Y, Zhao L, Li N, Dai C, Yin N, Chu Z, Duan X, Niu X, Yan P, Lv P. Estrogen Exerts Neuroprotective Effects in Vascular Dementia Rats by Suppressing Autophagy and Activating the Wnt/β-Catenin Signaling Pathway. Neurochem Res 2020; 45:2100-2112. [PMID: 32719979 DOI: 10.1007/s11064-020-03072-5] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2020] [Revised: 05/23/2020] [Accepted: 06/12/2020] [Indexed: 01/24/2023]
Abstract
Vascular dementia (VD) is a clinical syndrome of acquired cognitive dysfunction caused by various cerebrovascular factors. Estrogen is a steroid hormone involved in promoting neuronal survival and in regulating many signaling pathways. However, the mechanism by which it confers neuroprotective effects in VD remains unclear. Here, we aimed to investigate the effect of estrogen on neuronal injury and cognitive impairment in VD rats. Adult female rats were randomly divided into four groups (sham, model, estrogen early and estrogen later treatment) and received sham surgery or bilateral ovariectomy and permanent occlusion of bilateral common carotid arteries (BCCAO). The early treatment group received daily intraperitoneal injections of 17β-estradiol (100 µg/kg/day) for 8 weeks starting the day after BCCAO. The later treatment group was administered the same starting 1 week after BCCAO. Learning and memory functions were assessed using the Morris water maze. Morphological changes within the hippocampal CA1 region were observed by hematoxylin/eosin staining and electron microscopy. Expression of proteins associated with autophagy and signaling were detected by immunohistochemical staining and Western blot. We found that estrogen significantly alleviated cognitive damage and neuronal injury and reduced the expression of Beclin1 and LC3B, indicating a suppression of autophagy. Moreover, estrogen enhanced expression of β-catenin and Cyclin D1, while reducing glycogen synthase kinase 3β, suggesting activation of Wnt/β-catenin signaling. These results indicate that estrogen ameliorates learning and memory deficiencies in VD rats, and that this neuroprotective effect may be explained by the suppression of autophagy and activation of Wnt/β-catenin signaling.
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Affiliation(s)
- Yanyan Yang
- Department of Neurology, Hebei Medical University, Shijiazhuang, 050017, China.,Department of Gynecology, Hebei General Hospital, Shijiazhuang, 050051, China
| | - Lei Zhao
- Department of Neurology, Hebei General Hospital, Shijiazhuang, 050051, China
| | - Na Li
- Department of Gynecology, Hebei General Hospital, Shijiazhuang, 050051, China
| | - Congwei Dai
- Department of Gynecology, Hebei General Hospital, Shijiazhuang, 050051, China
| | - Nan Yin
- Department of Neurology, Hebei General Hospital, Shijiazhuang, 050051, China
| | - Zhaoping Chu
- Department of Gynecology, Hebei General Hospital, Shijiazhuang, 050051, China
| | - Xiaoyan Duan
- Department of Gynecology, Hebei General Hospital, Shijiazhuang, 050051, China
| | - Xiaoli Niu
- Department of Neurology, Hebei General Hospital, Shijiazhuang, 050051, China
| | - Ping Yan
- Department of Gynecology, Hebei General Hospital, Shijiazhuang, 050051, China
| | - Peiyuan Lv
- Department of Neurology, Hebei General Hospital, Shijiazhuang, 050051, China.
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Creatine and taurine mixtures alleviate depressive-like behaviour in Drosophila melanogaster and mice via regulating Akt and ERK/BDNF pathways. Sci Rep 2020; 10:11370. [PMID: 32647316 PMCID: PMC7347602 DOI: 10.1038/s41598-020-68424-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2020] [Accepted: 06/23/2020] [Indexed: 12/13/2022] Open
Abstract
We investigated the antidepressant effect of creatine (CRE) and taurine (TAU) mixtures on behavioural changes and biomarkers in stress-induced depression in Drosophila melanogaster and a mouse model. Following CRE/TAU mixture administration in the Drosophila model, depression-like state induced by vibration, locomotion, climbing activity, and survival rate were measured. The normal stress (NS) group demonstrated decreased movement than the control (CON) group; movements in the CRE/TAU-treated group (particularly 0.15/0.5%) returned to the CON levels. Antidepressant effects of CRE/TAU mixtures were confirmed in a depressive mouse model induced by chronic mild stress. In behavioural assessments, movement and sucrose preference of the CRE/TAU group increased to a similar level as in the positive control group; hippocampal catecholamine and serotonin levels increased significantly. Stress-related hormones (adrenocorticotropic and corticotropin-releasing hormones) and inflammatory factors (IL-1β, IL-6, and TNF-α) increased in the NS group but significantly decreased in the CRE/TAU-treated group. Brain signalling protein expression ratio of phosphorylated protein kinase B (p-Akt)/Akt, phosphorylated extracellular signal-regulated kinase (p-ERK)/ERK, and brain-derived neurotrophic factor (BDNF) significantly increased in the CRE/TAU-treated group. These results indicate that CRE/TAU-induced antidepressant effects are associated with increased behavioural patterns and downregulation of stress hormones and cytokines, mediated through Akt and ERK/BDNF pathways in vertebrate models.
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Fischer M, Ruhnau J, Schulze J, Obst D, Flöel A, Vogelgesang A. Spermine and spermidine modulate T-cell function in older adults with and without cognitive decline ex vivo. Aging (Albany NY) 2020; 12:13716-13739. [PMID: 32603310 PMCID: PMC7377836 DOI: 10.18632/aging.103527] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2020] [Accepted: 06/05/2020] [Indexed: 01/13/2023]
Abstract
The global increase in neurodegenerative disorders is one of the most crucial public health issues. Oral polyamine intake was shown to improve memory performance which is thought to be mediated at least in part via increased autophagy induced in brain cells. In Alzheimer’s Disease, T-cells were identified as important mediators of disease pathology. Since autophagy is a central regulator of cell activation and cytokine production, we investigated the influence of polyamines on T-cell activation, autophagy, and the release of Th1/Th2 cytokines from blood samples of patients (n=22) with cognitive impairment or dementia in comparison to healthy controls (n=12) ex vivo. We found that spermine downregulated all investigated cytokines in a dose-dependent manner. Spermidine led to an upregulation of some cytokines for lower dosages, while high dosages downregulated all cytokines apart from upregulated IL-17A. Autophagy and T-cell activation increased in a dose-dependent manner by incubation with either polyamine. Although effects in patients were seen in lower concentrations, alterations were similar to controls. We provide novel evidence that supplementation of polyamines alters the function of T-cells. Given their important role in dementia, these data indicate a possible mechanism by which polyamines would help to prevent structural and cognitive decline in aging.
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Affiliation(s)
| | - Johanna Ruhnau
- Department of Neurology, University Medicine, Greifswald, Germany
| | - Juliane Schulze
- Department of Neurology, University Medicine, Greifswald, Germany
| | - Daniela Obst
- Department of Neurology, University Medicine, Greifswald, Germany
| | - Agnes Flöel
- Department of Neurology, University Medicine, Greifswald, Germany
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Niu HM, Ma DL, Wang MY, Chen XP, Zhang L, Li YL, Zhang L, Li L. Epimedium flavonoids protect neurons and synapses in the brain via activating NRG1/ErbB4 and BDNF/Fyn signaling pathways in a chronic cerebral hypoperfusion rat model. Brain Res Bull 2020; 162:132-140. [PMID: 32592805 DOI: 10.1016/j.brainresbull.2020.06.012] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2020] [Revised: 06/02/2020] [Accepted: 06/19/2020] [Indexed: 12/20/2022]
Abstract
Cerebral hypoperfusion is a common feature of cerebral small vascular disease (CSVD), which has been considered as one of the causes of cognitive decline in recent years. Epimedium flavonoids (EF) are the main ingredients extracted from Epimedium. The purpose of this study was to investigate the effects of EF on cognitive impairment, and the underlying mechanisms in rats with permanent occlusion of the bilateral common carotid artery (2VO). EF (50, 100, and 200 mg/kg) was intragastrically administered for 12 weeks starting 2 weeks after 2VO surgery. The results showed that EF treatment improved learning and memory impairment in 2VO rats evaluated by novel object recognition and Y-maze tests. NeuN immunohistochemical staining indicated that EF alleviated neuronal loss in the hippocampus and cerebral cortex of 2VO rats. MAP-2 immunofluorescence staining and western blotting showed that EF protected neuronal dendrites and increased the expression of cytoskeleton proteins MAP-2 and NF200 in the hippocampus of 2VO rats. Moreover, EF protected the synapse ultrastructure detected by transmission electron microscopy, and increased the expression of synaptic plasticity-related proteins, including synaptophysin, synaptotagmin-I, synapsin I, PSD-95, p-NMDA2B, and p-CaMKII-α in the hippocampus of 2VO rats. In addition, EF increased the expression of neuregulin-1 (NRG-1), p-ErbB4, brain-derived neurotrophic factor (BDNF), p-Fyn, PI3K, p-Akt, and p-CREB in the hippocampus of 2VO rats. These results suggest that EF may protect neurons and synapses by activating the NRG1/ErbB4, BDNF/Fyn, and P13 K/Akt/CREB pathways in the hippocampus and cerebral cortex, thus improving cognitive impairment induced by chronic cerebral hypoperfusion. EF may be a potential candidate drug for chronic cerebral hypoperfusion and CSVD therapy.
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Affiliation(s)
- Hong-Mei Niu
- Department of Pharmacy, Xuanwu Hospital of Capital Medical University, National Clinical Research Center for Geriatric Diseases, Beijing Engineering Research Center for Nerve System Drugs, Beijing Institute for Brain Disorders, Key Laboratory for Neurodegenerative Diseases of Ministry of Education, Beijing, 100053, China
| | - Deng-Lei Ma
- Department of Pharmacy, Xuanwu Hospital of Capital Medical University, National Clinical Research Center for Geriatric Diseases, Beijing Engineering Research Center for Nerve System Drugs, Beijing Institute for Brain Disorders, Key Laboratory for Neurodegenerative Diseases of Ministry of Education, Beijing, 100053, China
| | - Ming-Yang Wang
- Department of Pharmacy, Xuanwu Hospital of Capital Medical University, National Clinical Research Center for Geriatric Diseases, Beijing Engineering Research Center for Nerve System Drugs, Beijing Institute for Brain Disorders, Key Laboratory for Neurodegenerative Diseases of Ministry of Education, Beijing, 100053, China
| | - Xiao-Ping Chen
- Department of Pharmacy, Xuanwu Hospital of Capital Medical University, National Clinical Research Center for Geriatric Diseases, Beijing Engineering Research Center for Nerve System Drugs, Beijing Institute for Brain Disorders, Key Laboratory for Neurodegenerative Diseases of Ministry of Education, Beijing, 100053, China
| | - Li Zhang
- Department of Pharmacy, Xuanwu Hospital of Capital Medical University, National Clinical Research Center for Geriatric Diseases, Beijing Engineering Research Center for Nerve System Drugs, Beijing Institute for Brain Disorders, Key Laboratory for Neurodegenerative Diseases of Ministry of Education, Beijing, 100053, China
| | - Ya-Li Li
- Department of Pharmacy, Xuanwu Hospital of Capital Medical University, National Clinical Research Center for Geriatric Diseases, Beijing Engineering Research Center for Nerve System Drugs, Beijing Institute for Brain Disorders, Key Laboratory for Neurodegenerative Diseases of Ministry of Education, Beijing, 100053, China
| | - Lan Zhang
- Department of Pharmacy, Xuanwu Hospital of Capital Medical University, National Clinical Research Center for Geriatric Diseases, Beijing Engineering Research Center for Nerve System Drugs, Beijing Institute for Brain Disorders, Key Laboratory for Neurodegenerative Diseases of Ministry of Education, Beijing, 100053, China
| | - Lin Li
- Department of Pharmacy, Xuanwu Hospital of Capital Medical University, National Clinical Research Center for Geriatric Diseases, Beijing Engineering Research Center for Nerve System Drugs, Beijing Institute for Brain Disorders, Key Laboratory for Neurodegenerative Diseases of Ministry of Education, Beijing, 100053, China.
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21
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Jun YH, Ju GS, Chung YY, Shin HK, Kim DJ, Choi MS, Kim ST, Son KM. Differential Expression of Vascular Endothelial Growth Factor in the Cortex and Hippocampus upon Cerebral Hypoperfusion. In Vivo 2020; 34:191-197. [PMID: 31882479 DOI: 10.21873/invivo.11761] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2019] [Revised: 10/02/2019] [Accepted: 10/15/2019] [Indexed: 12/19/2022]
Abstract
BACKGROUND/AIM Vascular endothelial growth factor (VEGF) provides tolerance against ischemic brain injury, yet, the pattern of VEGF expression in the neurogenic zones following chronic cerebral hypoperfusion has not been studied. Here we evaluated the immunoreactivity of VEGF in a rat model of chronic cerebral hypoperfusion. MATERIALS AND METHODS Chronic hypoperfusion was induced by bilateral common carotid artery ligation in rats. Immunohistochemistry was performed against hypoxia-inducible factor-1α (HIF-1α) and VEGF on brain sections. RESULTS The density of HIF1α-positive cells in the hypoxia group was increased in the cerebral cortex and hippocampus. Further, the density of VEGF-positive cells was significantly higher in the hypoxia group compared to the control group in the cerebral cortex whereas it was similar in the subventricular zone, and in the dentate gyrus in the hippocampus between the two groups. CONCLUSION The pattern of VEGF expression varies in different brain regions following chronic cerebral hypoperfusion.
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Affiliation(s)
- Yong Hyun Jun
- Department of Anatomy, School of Medicine, Chosun University, Gwang-ju, Republic of Korea
| | - Gang San Ju
- Department of Plastic and Reconstructive Surgery, Chosun University Hospital, Gwang-ju, Republic of Korea
| | - Yoon Young Chung
- Department of Anatomy, School of Medicine, Chosun University, Gwang-ju, Republic of Korea
| | - Hye-Kyoung Shin
- Department of Anatomy, School of Medicine, Chosun University, Gwang-ju, Republic of Korea
| | - Dong-Joon Kim
- Department of Anesthesiology and Pain Medicine, Chosun University Hospital, Gwang-ju, Republic of Korea
| | - Min Seon Choi
- Department of Pediatrics, Chosun University Hospital, Gwang-ju, Republic of Korea
| | - Seong Taeck Kim
- Department of Ophthalmology, Chosun University Hospital, Gwang-ju, Republic of Korea
| | - Kyung Min Son
- Department of Plastic and Reconstructive Surgery, Chosun University Hospital, Gwang-ju, Republic of Korea
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22
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Zhang L, Fan Y, Kong X, Hao W. Neuroprotective effect of different physical exercises on cognition and behavior function by dopamine and 5-HT level in rats of vascular dementia. Behav Brain Res 2020; 388:112648. [PMID: 32339549 DOI: 10.1016/j.bbr.2020.112648] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2019] [Revised: 03/21/2020] [Accepted: 04/07/2020] [Indexed: 12/27/2022]
Abstract
The aim of the present study is to evaluate neuroprotective effect of different physical exercises on cognition and behavior function by dopamine and 5-HT in rats of vascular dementia. Forty Sprague-Dawley rats were enrolled in this study and randomly divided into following 5 groups: control group (C group, n = 8), vascular dementia group (VD group, n = 8), treadmill exercise and vascular dementia group (TE-VD group, n = 8), in-voluntary exercise and vascular dementia group (IE-VD group, n = 8), voluntary exercise and vascular dementia group (VE-VD group, n = 8). The rats in TE-VD, IE-VD and VE-VD groups were received different physical exercise interventions, treadmill exercise, voluntary running exercise, involuntary running exercise respectively, total 4 weeks. Next, the rats in VE-VD, IE-VD, TE-VD and VD groups were received bilateral common carotids arteries operation to create vascular dementia model. Then, we use a passive avoid test to evaluate cognition and open field test to evaluate cognition autonomic activity in each group. The level in hippocampal dopamine and 5-HT were detected by microdialysis coupled with high performance liquid chromatography. Behavior results demonstrated that: compared with C group, the cognition in VD group significantly decreased (p < 0.001); compared with VD group, the cognition in VE-VD, IE-VD and TE-VD groups were significantly increased (p < 0.001). However, there are no significant difference between VE-VD, IE-VD and TE-VD groups (p> 0.05). In addition, hippocampal dopamine and 5-HT level significantly decreased in VD group when compared with C group (p < 0.001); hippocampal dopamine and 5-HT level in VE-VD, IE-VD and TE-VD groups were significantly increased when compared with VD group (p < 0.05). However, there are no significant difference between VE-VD, IE-VD and TE-VD groups (p> 0.05). Therefore, we concluded that different physical exercises, included treadmill exercise, in-voluntary exercise and voluntary exercise, all can protect cognition by up-regulate dopamine and 5-HT level in rats of vascular dementia.
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Affiliation(s)
- Linlin Zhang
- Provincial University Key Laboratory of Sport and Health Science, School of Physical Education and Sport Sciences, Fujian Normal University, Fuzhou, 350007, China; Capital University of Physical Education and Sports, Beijing, 100191, China
| | - Yongzhao Fan
- Capital University of Physical Education and Sports, Beijing, 100191, China; Comprehensive Key Laboratory of Sports Ability Evaluation and Research of the General Administration of Sport of China, Beijing Key Laboratory of Sports Function Assessment and Technical Analysis, Capital University of Physical Education and Sports, Beijing, 100191, China
| | - Xiaoyang Kong
- Li-Ning Sports Science Research Center, Beijing, China
| | - Wu Hao
- Capital University of Physical Education and Sports, Beijing, 100191, China; Comprehensive Key Laboratory of Sports Ability Evaluation and Research of the General Administration of Sport of China, Beijing Key Laboratory of Sports Function Assessment and Technical Analysis, Capital University of Physical Education and Sports, Beijing, 100191, China.
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23
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Dai C, Xiao X, Zhang Y, Xiang B, Hoyer D, Shen J, Velkov T, Tang S. Curcumin Attenuates Colistin-Induced Peripheral Neurotoxicity in Mice. ACS Infect Dis 2020; 6:715-724. [PMID: 32037797 DOI: 10.1021/acsinfecdis.9b00341] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
Peripheral neurotoxicity often occurs in patients receiving parenteral polymyxin therapy (i.e., colistin methanesulfonate or polymyxin B). The present study aimed to investigate the protective effect of curcumin on colistin-induced peripheral neurotoxicity using a murine model. Female C57BL/6 mice (n = 10 in each group) were randomly divided into the following: (1) control group (saline), (2) curcumin only group (200 mg/kg/day; orally), (3) colistin only group (18 mg/kg/day; i.p.), (4) colistin (18 mg/kg/day) plus curcumin 50 mg/kg/day group, (5) colistin (18 mg/kg/day) plus curcumin 100 mg/kg/day group, (6) colistin (18 mg/kg/day) plus curcumin 200 mg/kg/day group; all mice were treated for 7 days. Orally applied curcumin was detected in the brain, cerebellum, and sciatic nerve. Co-administration of oral curcumin markedly improved colistin-induced impaired sensory and motor dysfunctions in a dose-dependent manner. Curcumin supplementation at 100 and 200 mg/kg significantly decreased lipid peroxidation and upregulated catalase (CAT) and superoxide dismutase (SOD) activities, ATP levels, and Na+/K+-ATPase activity in sciatic nerve tissue, compared to the colistin alone group. Curcumin supplementation at 200 mg/kg upregulated the levels of AKT, NGF, mTOR, Nrf2, and HO-1 mRNA and concomitantly downregulated Bax, caspases-3, and -9 mRNA; it also decreased caspase-3 and caspase-9 activity. In summary, for the first time, our study reveals that the protective effect of oral curcumin on colistin induced peripheral neurotoxicity is associated with the activation of NGF/Akt and Nrf2/HO-1 pathways and inhibition of oxidative stress. This study highlights the potential clinical application of curcumin as an oral neuroprotective agent coadministered during colistin therapy.
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Affiliation(s)
- Chongshan Dai
- College of Veterinary Medicine, China Agricultural University, Beijing 100193, P. R. China
| | - Xilong Xiao
- College of Veterinary Medicine, China Agricultural University, Beijing 100193, P. R. China
| | - Yuan Zhang
- College of Veterinary Medicine, China Agricultural University, Beijing 100193, P. R. China
| | - Biao Xiang
- College of Veterinary Medicine, China Agricultural University, Beijing 100193, P. R. China
| | - Daniel Hoyer
- Department of Pharmacology & Therapeutics, School of Biomedical Sciences, Faculty of Medicine, Dentistry and Health Sciences, The University of Melbourne, Parkville, Victoria 3010, Australia
- The Florey Institute of Neuroscience and Mental Health, The University of Melbourne, 30 Royal Parade, Parkville, Victoria 3052, Australia
- Department of Molecular Medicine, The Scripps Research Institute, 10550 N. Torrey Pines Road, La Jolla, California 92037, United States
| | - Jianzhong Shen
- College of Veterinary Medicine, China Agricultural University, Beijing 100193, P. R. China
| | - Tony Velkov
- Department of Pharmacology & Therapeutics, School of Biomedical Sciences, Faculty of Medicine, Dentistry and Health Sciences, The University of Melbourne, Parkville, Victoria 3010, Australia
| | - Shusheng Tang
- College of Veterinary Medicine, China Agricultural University, Beijing 100193, P. R. China
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24
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Zhang S, Xue R, Geng Y, Wang H, Li W. Fisetin Prevents HT22 Cells From High Glucose-Induced Neurotoxicity via PI3K/Akt/CREB Signaling Pathway. Front Neurosci 2020; 14:241. [PMID: 32265642 PMCID: PMC7096699 DOI: 10.3389/fnins.2020.00241] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2019] [Accepted: 03/03/2020] [Indexed: 01/27/2023] Open
Abstract
Hyperglycemia has been widely considered as a key risk factor for diabetic encephalopathy which can cause neuronal apoptosis and cognitive deficits. The flavonoid compound, fisetin, possesses potential neuroprotective effects and also enhances learning and memory. However, the role of fisetin in hyperglycemia-induced neuronal cytotoxicity has not been fully elucidated. In the present study, HT22 murine hippocampal neuronal cell line was used to establish the injured cell model. Cell proliferation and cytotoxicity assay, Hoechst 33258 staining, qRT-PCR, western blot analysis, and specific inhibitor were used to investigate the effect and molecular mechanisms of fisetin on high glucose (HG)-induced neurotoxicity in HT22 cells. Our results showed that 125 μM and 48 h of treatment was identified as optimal damage parameter of HG. Fisetin significantly improved HG-inhibited cell viability. The levels of LDH, malondialdehyde (MDA), and superoxide dismutase (SOD) were noticeably modulated by fisetin, which alleviated HG-induced HT22 cell oxidative damage. Besides, the apoptosis of HT22 cells was rescued by fisetin pretreatment. In addition, fisetin also prevented HG-induced downregulation of the mRNA expression of Bdnf, Gdnf, synaptophysin (Syp), and glutamate ionotropic receptor AMPA type subunit 1 (Gria1) in cells. More importantly, the decreased phosphorylation of phosphoinositide 3 kinase (PI3K), Akt, and cAMP-response element binding protein (CREB) was rescued by fisetin treatment and that neuroprotective effect of fisetin was partially blocked by PI3K inhibitor, LY294002. These findings indicate that fisetin has potent neuroprotective effect and prevents HG-induced neurotoxicity by activation of PI3K/Akt/CREB pathway.
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Affiliation(s)
- Shenshen Zhang
- Precision Nutrition Innovation Center, College of Public Health, Zhengzhou University, Zhengzhou, China.,Department of Nutrition and Food Hygiene, College of Public Health, Zhengzhou University, Zhengzhou, China
| | - Ran Xue
- Precision Nutrition Innovation Center, College of Public Health, Zhengzhou University, Zhengzhou, China.,Department of Nutrition and Food Hygiene, College of Public Health, Zhengzhou University, Zhengzhou, China
| | - Yaping Geng
- Precision Nutrition Innovation Center, College of Public Health, Zhengzhou University, Zhengzhou, China.,Department of Nutrition and Food Hygiene, College of Public Health, Zhengzhou University, Zhengzhou, China
| | - Hao Wang
- Precision Nutrition Innovation Center, College of Public Health, Zhengzhou University, Zhengzhou, China.,Department of Nutrition and Food Hygiene, College of Public Health, Zhengzhou University, Zhengzhou, China
| | - Wenjie Li
- Department of Nutrition and Food Hygiene, College of Public Health, Zhengzhou University, Zhengzhou, China
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25
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Xue Z, Zhang Y, Liu Y, Zhang C, Shen XD, Gao F, Busuttil RW, Zheng S, Kupiec-Weglinski JW, Ji H. PACAP neuropeptide promotes Hepatocellular Protection via CREB-KLF4 dependent autophagy in mouse liver Ischemia Reperfusion Injury. Am J Cancer Res 2020; 10:4453-4465. [PMID: 32292507 PMCID: PMC7150481 DOI: 10.7150/thno.42354] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2019] [Accepted: 03/02/2020] [Indexed: 12/13/2022] Open
Abstract
Organ ischemia reperfusion injury (IRI), associated with acute hepatocyte death, remains an unresolved problem in clinical orthotopic liver transplantation (OLT). Autophagy, an intracellular self-digesting progress, is responsible for cell reprograming required to regain post-stress homeostasis. Methods: Here, we analyzed the cytoprotective mechanism of pituitary adenylate cyclase-activating polypeptide (PACAP)-promoted hepatocellular autophagy in a clinically relevant mouse model of extended hepatic cold storage (4 °C UW solution for 20 h) followed by syngeneic OLT. Results: In contrast to 41.7% of liver graft failure by day 7 post-transplant in control group, PACAP treatment significantly improved graft survival (91.7% by day 14), and promoted autophagy-associated regeneration programs in OLT. In parallel in vitro studies, PACAP-enhanced autophagy ameliorated cellular damage (LDH/ALT levels), and diminished necrosis in H2O2-stressed primary hepatocytes. Interestingly, PACAP not only induced nuclear cAMP response element-binding protein (CREB), but also triggered reprogramming factor Kruppel-like factor 4 (KLF4) expression in IR-stressed OLT. Indeed, CREB inhibition attenuated hepatic autophagy and recreated hepatocellular injury in otherwise PACAP-protected livers. Furthermore, CREB inhibition suppressed PACAP-induced KLF4 expression, whereas KLF4 blockade abolished PACAP-promoted autophagy and neutralized PACAP-mediated hepatoprotection both in vivo and in vitro. Conclusion: Current study documents the essential neural regulation of PACAP-promoted autophagy in hepatocellular homeostasis in OLT, which provides the emerging therapeutic principle to combat hepatic IRI in OLT.
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26
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Chen C, Chen W, Nong Z, Nie Y, Chen X, Pan X, Guo Y, Yao M, Deng W. Hyperbaric oxygen alleviated cognitive impairments in mice induced by repeated cerebral ischemia-reperfusion injury via inhibition of autophagy. Life Sci 2019; 241:117170. [PMID: 31838137 DOI: 10.1016/j.lfs.2019.117170] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2019] [Revised: 11/21/2019] [Accepted: 12/09/2019] [Indexed: 01/09/2023]
Abstract
AIMS In this study, we investigate the effect and underlying mechanism of hyperbaric oxygen (HBO) treatment on a model of repeated cerebral ischemia-reperfusion injury (IR). MAIN METHODS Eighty rats were randomly separated into sham, vehicle, hyperbaric air (HBA; 0.25 MPa, 60 min), and HBO (0.25 MPa, 60 min) groups. Repeated cerebral IR was induced by ligating the right and left bilateral common carotid arteries for 10 min and then allowing reperfusion for 10 min. This pattern was repeated three times. The neuroprotective effects of HBO were assessed by animal behavior, neuron morphology, inflammatory markers, intracellular calcium ion content, and autophagy-related protein and gene expression. KEY FINDINGS Our result showed that HBO improved learning and memory in the navigation trail and probe trail of the Morris water maze, and these findings were supported by the observation data from 2,3,5-Triphenyltet-razolium chloride staining, Nissl staining, and electron microscopic. Importantly, we found that HBO reduced excessive autophagy in the prefrontal cortex, which was evidenced by activating of the mammalian target of the rapamycin (mTOR) and 4E-BP1, as well as suppression of LC3II and ATG5. Moreover, HBO significantly inhibited the cerebral IR-induced inflammatory reaction. Furthermore, HBO treatment modulated autophagy pathway-related factors, including producing a decrease in the intracellular calcium ion concentration and p53 level; meanwhile, the levels of BDNF and p-Akt were increased. SIGNIFICANCE Our results indicated that HBO protected against IR-induced neuron injury by attenuating autophagy, inflammation, and calcium overload. These results provide a new mechanism and laboratory evidence for clinical treatment of VD.
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Affiliation(s)
- Chunxia Chen
- Department of Pharmaceutical Sciences (Shenzhen), Sun Yat-Sen University, Guangzhou, Guangdong 510006, PR China; Department of Hyperbaric Oxygen, the People's Hospital of Guangxi Zhuang Autonomous Region, Nanning, Guangxi 530021, PR China
| | - Wan Chen
- Department of Emergency, the People's Hospital of Guangxi Zhuang Autonomous Region, Nanning, Guangxi 530021, PR China
| | - Zhihuan Nong
- Department of Pharmacy, the People's Hospital of Guangxi Zhuang Autonomous Region, Nanning, Guangxi 530021, PR China
| | - Yichu Nie
- Department of Pharmaceutical Sciences (Shenzhen), Sun Yat-Sen University, Guangzhou, Guangdong 510006, PR China
| | - Xiaoyu Chen
- Department of Pharmacy, the People's Hospital of Guangxi Zhuang Autonomous Region, Nanning, Guangxi 530021, PR China
| | - Xiaorong Pan
- Department of Hyperbaric Oxygen, the People's Hospital of Guangxi Zhuang Autonomous Region, Nanning, Guangxi 530021, PR China
| | - Ying Guo
- Department of Pharmaceutical Sciences (Shenzhen), Sun Yat-Sen University, Guangzhou, Guangdong 510006, PR China.
| | - Meicun Yao
- Department of Pharmaceutical Sciences (Shenzhen), Sun Yat-Sen University, Guangzhou, Guangdong 510006, PR China.
| | - Wenbin Deng
- Department of Pharmaceutical Sciences (Shenzhen), Sun Yat-Sen University, Guangzhou, Guangdong 510006, PR China.
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27
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Iron dysregulation in vascular dementia: Focused on the AMPK/autophagy pathway. Brain Res Bull 2019; 153:305-313. [PMID: 31542426 DOI: 10.1016/j.brainresbull.2019.09.006] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2019] [Revised: 08/28/2019] [Accepted: 09/17/2019] [Indexed: 01/22/2023]
Abstract
Recent researches suggested that iron dysregulation play an important role in the pathogenesis of vascular dementia (VD). Iron deposition had been found in hippocampus in vascular dementia model in recent research. Nevertheless, the underlying mechanisms of iron deposition and its neurotoxicity in vascular dementia was still unclear. Thus, our research was aimed at whether the neurotoxicity of iron was associated with autophagy regulation. We established a chronic cerebral hypoperfusion model in the rat brain in order to mimic the vascular dementia using permanent bilateral common carotid artery occlusion (2VO). The preparation of iron overloaded rats model by intraperitoneal injection of iron dextran. Following, we tested the learning and memory function of each group using Morris Water Maze. Consequently, we analyzed the iron content and iron transport related molecules (TFR1, DMT1) in hippocampus. Furthermore, we examined the effect of iron deposition on autophagy-related molecules including AMPK, Beclin1 and LC3 and the number of autophagosomes in hippocampus. Last, we tested the apoptosis of neurons in hippocampus. We found that iron deposition in hippocampus in model groups which accompanied the decline of learning and memory function. And the expression of TFR1 and DMT1 were up-regulated in model groups. Moreover, iron deposition up-regulated the expression of AMPK, Beclin1 and LC3 and increase the number of autophagosomes in hippocampus. And the expression of Bax was up-regulated and Bcl-2 was down-regulated in iron deposition groups. To sum up, our data suggested that iron deposition increased AMPK/autophagy pathway associated molecules in the hippocampus and promoted neuronal apoptosis, which might be a new pathogenesis in vascular dementia.
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28
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Ou HC, Chou WC, Chu PM, Hsieh PL, Hung CH, Tsai KL. Fucoxanthin Protects against oxLDL-Induced Endothelial Damage via Activating the AMPK-Akt-CREB-PGC1α Pathway. Mol Nutr Food Res 2019; 63:e1801353. [PMID: 30892786 DOI: 10.1002/mnfr.201801353] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2018] [Revised: 02/13/2019] [Indexed: 02/06/2023]
Abstract
SCOPE Atherosclerotic cardiovascular disease is the most prevalent cause of mortality and morbidity. Fucoxanthin (FX) possesses anti-hypertensive and anti-obesity properties. However, the molecular mechanisms underlying the inhibitory effects of FX on oxidized low-density lipoprotein (oxLDL)-induced oxidative injuries in human endothelial cells are still largely unknown. This study aims to test the hypothesis that FX protects against oxLDL-induced oxidative stress by upregulating AMP-activated protein kinase (AMPK) and to explore the roles of cAMP response element binding protein (CREB) and peroxisome proliferator-activated receptor gamma coactivator-1α (PGC-1α). METHODS AND RESULTS Human umbilical vein endothelial cells are treated with oxLDL in the presence or absence of FX. FX significantly increases AMPK phosphorylation. In addition, FX diminishes oxLDL-mediated nicotinamide adenine dinucleotide phosphate oxidase activation by inhibiting protein kinase C and subsequently inducing reactive oxygen species generation and impairing the activity of the endogenous antioxidant enzyme superoxidase dismutase. Furthermore, FX restores oxLDL-mediated dephosphorylation of phosphoinositide-3-kinase/Akt and decreases CREB and PGC-1α expression to nearly normal levels. Moreover, FX ameliorates the oxLDL-mediated suppression of mitochondrial function and apoptosis. CONCLUSION These findings provide new insights into the possible molecular mechanisms by which FX mitigates oxLDL-induced endothelial oxidative stress and mitochondrial dysfunction.
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Affiliation(s)
- Hsiu-Chung Ou
- Department of Physical Therapy, College of Medical and Health Science, Asia University, Taichung, Taiwan
| | - Wan-Ching Chou
- Department of Physical Therapy, College of Medicine, National Cheng Kung University, Tainan, Taiwan, 701
| | - Pei-Ming Chu
- Department of Anatomy, School of Medicine, China Medical University, Taichung, Taiwan
| | - Pei-Ling Hsieh
- Department of Anatomy, School of Medicine, China Medical University, Taichung, Taiwan
| | - Ching-Hsia Hung
- Department of Physical Therapy, College of Medicine, National Cheng Kung University, Tainan, Taiwan, 701.,Institute of Allied Health Sciences, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Kun-Ling Tsai
- Department of Physical Therapy, College of Medicine, National Cheng Kung University, Tainan, Taiwan, 701
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29
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Aminyavari S, Zahmatkesh M, Farahmandfar M, Khodagholi F, Dargahi L, Zarrindast MR. Protective role of Apelin-13 on amyloid β25-35-induced memory deficit; Involvement of autophagy and apoptosis process. Prog Neuropsychopharmacol Biol Psychiatry 2019; 89:322-334. [PMID: 30296470 DOI: 10.1016/j.pnpbp.2018.10.005] [Citation(s) in RCA: 56] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/07/2018] [Revised: 08/05/2018] [Accepted: 10/04/2018] [Indexed: 11/27/2022]
Abstract
Alzheimer's disease (AD) by progressive neurodegenerative pattern is associated with autophagy stress which is suggested as a potential cause of amyloid β (Aβ) aggregation and neural loss. Apelin-13, a neuropeptide with modulatory effect on autophagy, has been shown the beneficial effects on neural cell injuries. We investigated the effect of Apelin-13 on Aβ-induced memory deficit as well as autophagy and apoptosis processes. We performed bilateral intra-CA1 injection of Aβ25-35 alone or in combination with Apelin-13. Spatial reference and working memory was evaluated using the Morris water maze (MWM) and Y-maze tests. Hippocampus was harvested on 2, 5, 10 and 21 days after Aβ injection. The light chain 3 (LC3II/I) ratio, histone deacetylase 6 (HDAC6) level, Caspase-3 cleavage, and mTOR phosphorylation were assessed using western blot technique. Intra-CA1 injection of Aβ caused impairment of working and spatial memory. We observed higher LC3II/I ratio, cleaved caspase-3 and lower HDAC6, and p-mTOR/mTOR ratio in Aβ-treated animals. Apelin-13 provided significant protection against the destructive effects of Aβ on working and spatial memory. Apelin-13 prevented the increase of LC3II/I ratio and cleaved caspase-3 on days 10 and 21 after injection of Aβ. It also limited the Aβ-induced reduction in HDAC6 expression. This implies that Apelin-13 has suppressed both autophagy and apoptosis. Our findings suggested that the neuroprotection of Apelin-13 may be in part related to autophagy and apoptosis inhibition via the mTOR signaling pathway. Apelin-13 may be a promising approach to improve memory impairment and potentially pave the way for new therapeutic plans in AD.
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Affiliation(s)
- Samaneh Aminyavari
- Department of Neuroscience and Addiction Studies, School of Advanced Technologies in Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Maryam Zahmatkesh
- Department of Neuroscience and Addiction Studies, School of Advanced Technologies in Medicine, Tehran University of Medical Sciences, Tehran, Iran; Cognitive Sciences and Behavior Research Center, Tehran University of Medical Sciences, Tehran, Iran.
| | - Maryam Farahmandfar
- Department of Neuroscience and Addiction Studies, School of Advanced Technologies in Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Fariba Khodagholi
- Neuroscience Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Leila Dargahi
- Neurobiology Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Mohammad-Reza Zarrindast
- Department of Neuroscience and Addiction Studies, School of Advanced Technologies in Medicine, Tehran University of Medical Sciences, Tehran, Iran
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Dai C, Xiao X, Li J, Ciccotosto GD, Cappai R, Tang S, Schneider-Futschik EK, Hoyer D, Velkov T, Shen J. Molecular Mechanisms of Neurotoxicity Induced by Polymyxins and Chemoprevention. ACS Chem Neurosci 2019; 10:120-131. [PMID: 30362702 DOI: 10.1021/acschemneuro.8b00300] [Citation(s) in RCA: 40] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Neurotoxicity is one major unwanted side-effects associated with polymyxin (i.e., colistin and polymyxin B) therapy. Clinically, colistin neurotoxicity is characterized by neurological symptoms including dizziness, visual disturbances, vertigo, confusion, hallucinations, seizures, ataxia, and facial and peripheral paresthesias. Pathologically, colistin-induced neurotoxicity is characterized by cell injury and death in neuronal cell. This Review covers our current understanding of polymyxin-induced neurotoxicity, its underlying mechanisms, and the discovery of novel neuroprotective agents to limit this neurotoxicity. In recent years, an increasing body of literature supports the notion that polymyxin-induced nerve damage is largely related to oxidative stress and mitochondrial dysfunction. P53, PI3K/Akt, and MAPK pathways are also involved in colistin-induced neuronal cell death. The activation of the redox homeostasis pathways such as Nrf2/HO-1 and autophagy have also been shown to play protective roles against polymyxin-induced neurotoxicity. These pathways have been demonstrated to be upregulated by neuroprotective agents including curcumin, rapamycin and minocycline. Further research is needed toward the development of novel polymyxin formulations in combination with neuroprotective agents to ameliorate this unwanted adverse effect during polymyxins therapy in patients.
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Affiliation(s)
- Chongshan Dai
- Department of Veterinary Pharmacology and Toxicology, College of Veterinary Medicine, China Agricultural University, No. 2 Yuanmingyuan West Road, Beijing 100193, P. R. China
| | - Xilong Xiao
- Department of Veterinary Pharmacology and Toxicology, College of Veterinary Medicine, China Agricultural University, No. 2 Yuanmingyuan West Road, Beijing 100193, P. R. China
| | - Jichang Li
- Department of Veterinary Pharmacology and Toxicology, College of Veterinary Medicine, Northeast Agricultural University, Harbin 150000, P. R. China
| | - Giuseppe D. Ciccotosto
- Department of Pharmacology & Therapeutics, School of Biomedical Sciences, Faculty of Medicine, Dentistry and Health Sciences, The University of Melbourne, Parkville, Victoria 3010, Australia
| | - Roberto Cappai
- Department of Pharmacology & Therapeutics, School of Biomedical Sciences, Faculty of Medicine, Dentistry and Health Sciences, The University of Melbourne, Parkville, Victoria 3010, Australia
| | - Shusheng Tang
- Department of Veterinary Pharmacology and Toxicology, College of Veterinary Medicine, China Agricultural University, No. 2 Yuanmingyuan West Road, Beijing 100193, P. R. China
| | - Elena K. Schneider-Futschik
- Department of Pharmacology & Therapeutics, School of Biomedical Sciences, Faculty of Medicine, Dentistry and Health Sciences, The University of Melbourne, Parkville, Victoria 3010, Australia
| | - Daniel Hoyer
- Department of Pharmacology & Therapeutics, School of Biomedical Sciences, Faculty of Medicine, Dentistry and Health Sciences, The University of Melbourne, Parkville, Victoria 3010, Australia
- The Florey Institute of Neuroscience and Mental Health, The University of Melbourne, 30 Royal Parade, Parkville, Victoria 3052, Australia
- Department of Molecular Medicine, The Scripps Research Institute, 10550 N. Torrey Pines Road, La Jolla, California 92037, United States
| | - Tony Velkov
- Department of Veterinary Pharmacology and Toxicology, College of Veterinary Medicine, Northeast Agricultural University, Harbin 150000, P. R. China
| | - Jianzhong Shen
- Department of Veterinary Pharmacology and Toxicology, College of Veterinary Medicine, China Agricultural University, No. 2 Yuanmingyuan West Road, Beijing 100193, P. R. China
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Jiang X, Niu X, Guo Q, Dong Y, Xu J, Yin N, Qi Q, Jia Y, Gao L, He Q, Lv P. FoxO1-mediated autophagy plays an important role in the neuroprotective effects of hydrogen in a rat model of vascular dementia. Behav Brain Res 2019; 356:98-106. [DOI: 10.1016/j.bbr.2018.05.023] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2018] [Revised: 04/21/2018] [Accepted: 05/24/2018] [Indexed: 12/15/2022]
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Xia D, Sui R, Min L, Zhang L, Zhang Z. Fastigial nucleus stimulation ameliorates cognitive impairment via modulating autophagy and inflammasomes activation in a rat model of vascular dementia. J Cell Biochem 2018; 120:5108-5117. [PMID: 30552710 DOI: 10.1002/jcb.27787] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2018] [Accepted: 09/06/2018] [Indexed: 12/19/2022]
Affiliation(s)
- Dongjian Xia
- Department of Neurosurgery The First Affiliated Hospital to Jinzhou Medical University Jinzhou China
| | - Rubo Sui
- Department of Neurology The First Affiliated Hospital to Jinzhou Medical University Jinzhou China
| | - Lianqiu Min
- Department of Neurology The First Affiliated Hospital to Jinzhou Medical University Jinzhou China
| | - Ling Zhang
- Department of Neurology The First Affiliated Hospital to Jinzhou Medical University Jinzhou China
| | - Zhuang Zhang
- Department of Neurology The First Affiliated Hospital to Jinzhou Medical University Jinzhou China
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Ren Z, Yu J, Wu Z, Si W, Li X, Liu Y, Zhou J, Deng R, Chen D. MicroRNA-210-5p Contributes to Cognitive Impairment in Early Vascular Dementia Rat Model Through Targeting Snap25. Front Mol Neurosci 2018; 11:388. [PMID: 30483048 PMCID: PMC6243094 DOI: 10.3389/fnmol.2018.00388] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2018] [Accepted: 10/04/2018] [Indexed: 12/13/2022] Open
Abstract
Vascular dementia (VD) is the most common form of dementia in elderly people. However, little is understood about the role of microRNAs (miRNAs) involved in cognitive impairment in early VD. Here, a VD model induced by chronic cerebral ischemia and fetal bovine serum (FBS)-free cell model that detects synapse formation was established to investigate the function of miRNAs in early VD. The microarray analysis and real-time reverse transcription polymerase chain reaction (RT-PCR) showed that miR-210-5p increased significantly in the hippocampus of rats with 4 weeks of ischemia. The VD model rats also displayed significant cognitive deficits and synaptic loss. The overexpression of miR-210-5p decreased the synaptic number in primary hippocampal neurons, whereas specific suppression of miR-210-5p resulted in the formation of more synapses. Additionally, intracerebroventricular (ICV) injection of miR-210-5p agomir to VD rats aggravated phenotypes of cognitive impairment and synaptic loss. These VD-induced phenotypes were effectively attenuated by miR-210-5p antagomir. Moreover, bioinformatic prediction revealed that synaptosomal-associated protein of 25 KDa (Snap25) mRNA is targeted by miR-210-5p. The miR-210-5p decreased the luciferase activities of 3’ untranslated region (3’UTR) of Snap25 mRNA. Mutation of predicted miR-210-5p binding sites in the 3’ UTR of Snap25 mRNA abolished the miR-210-5p-induced decrease in luciferase activity. Western blot and immunofluorescence staining confirmed that miR-210-5p targets Snap25. Finally, RT-quantitative PCR (qPCR) and immunofluorescence staining detected that miR-210-5p agomir downregulated Snap25 expression in the cornu ammonis1 (CA1) region of hippocampi in VD rats, whereas miR-210-5p antagomir upregulated Snap25 expression. Altogether, miR-210-5p contributes to cognitive impairment in chronic ischemia-induced VD model through the regulation of Snap25 expression, which potentially provides an opportunity to develop a new therapeutic strategy for VD.
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Affiliation(s)
- Zhenxing Ren
- Department of Anatomy, The Research Center of Basic Integrative Medicine, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Junlong Yu
- College of Basic Medicine, The Research Center of Basic Integrative Medicine, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Zimei Wu
- Department of Anatomy, The Research Center of Basic Integrative Medicine, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Wenwen Si
- Department of Anatomy, The Research Center of Basic Integrative Medicine, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Xianqian Li
- Department of Anatomy, The Research Center of Basic Integrative Medicine, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Yuqing Liu
- Department of Anatomy, The Research Center of Basic Integrative Medicine, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Jianhong Zhou
- Department of Anatomy, The Research Center of Basic Integrative Medicine, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Rudong Deng
- Department of Anatomy, The Research Center of Basic Integrative Medicine, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Dongfeng Chen
- Department of Anatomy, The Research Center of Basic Integrative Medicine, Guangzhou University of Chinese Medicine, Guangzhou, China
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Yin C, Deng Y, Liu Y, Gao J, Yan L, Gong Q. Icariside II Ameliorates Cognitive Impairments Induced by Chronic Cerebral Hypoperfusion by Inhibiting the Amyloidogenic Pathway: Involvement of BDNF/TrkB/CREB Signaling and Up-Regulation of PPARα and PPARγ in Rats. Front Pharmacol 2018; 9:1211. [PMID: 30405422 PMCID: PMC6206175 DOI: 10.3389/fphar.2018.01211] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2018] [Accepted: 10/04/2018] [Indexed: 01/20/2023] Open
Abstract
Chronic cerebral hypoperfusion (CCH) is regarded as a high-risk factor for cognitive decline of vascular dementia (VD) as it is conducive to induce beta-amyloid (Aβ) aggregation. Icariside II (ICS II), a plant-derived flavonoid compound, has showed neuroprotective effect on animal models of Alzheimer’s disease (AD) by decreasing Aβ levels. Here, we assessed the effect of ICS II on CCH-induced cognitive deficits and Aβ levels in rats, and the possible underlying mechanisms were also explored. It was disclosed that CCH induced by bilateral common carotid artery occlusion (BCCAO) caused cognitive deficits, neuronal injury and increase of Aβ1-40 and Aβ1-42 levels in the rat hippocampus, while oral administration of ICS II for 28 days abolished the above deficits in the hippocampus of BCCAO rats. Meanwhile, ICS II significantly decreased the expression of beta-amyloid precursor protein (APP) and β-site amyloid precursor protein cleavage enzyme 1 (BACE1), as well as increased the expression of a disintegrin and metalloproteinase domain 10 (ADAM10) and insulin-degrading enzyme (IDE). ICS II also activated peroxisome proliferator-activated receptor (PPAR)α and PPARγ, enhanced the expression of brain-derived neurotrophic factor (BDNF), tyrosine receptor kinase B (TrkB), levels of Akt and cAMP response element binding protein (CREB) phosphorylation. Together, these findings suggested that ICS II attenuates CCH-induced cognitive deficits by inhibiting the amyloidogenic pathway via involvement of BDNF/TrkB/CREB signaling and up-regulation of PPARα and PPARγ in rats.
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Affiliation(s)
- Caixia Yin
- Key Laboratory of Basic Pharmacology of Ministry of Education and Joint International Research Laboratory of Ethnomedicine of Ministry of Education, Zunyi Medical University, Zunyi, China
| | - Yuanyuan Deng
- Key Laboratory of Basic Pharmacology of Ministry of Education and Joint International Research Laboratory of Ethnomedicine of Ministry of Education, Zunyi Medical University, Zunyi, China
| | - Yuangui 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, China
| | - Jianmei Gao
- School of Pharmacy, Zunyi Medical University, Zunyi, China
| | - Lingli Yan
- Key Laboratory of Basic Pharmacology of Ministry of Education and Joint International Research Laboratory of Ethnomedicine of Ministry of Education, Zunyi Medical University, Zunyi, China
| | - Qihai Gong
- Key Laboratory of Basic Pharmacology of Ministry of Education and Joint International Research Laboratory of Ethnomedicine of Ministry of Education, Zunyi Medical University, Zunyi, China
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Niu X, Jiang X, Xu G, Zheng G, Tang Z, Yin N, Li X, Yang Y, Lv P. DL‐3‐
n
‐butylphthalide alleviates vascular cognitive impairment by regulating endoplasmic reticulum stress and the Shh/Ptch1 signaling‐pathway in rats. J Cell Physiol 2018; 234:12604-12614. [PMID: 30306574 DOI: 10.1002/jcp.27332] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2018] [Accepted: 08/10/2018] [Indexed: 02/06/2023]
Affiliation(s)
- Xiao‐Li Niu
- Department of Neurology Hebei Medical University Shijiazhuang China
- Department of Neurology Hebei General Hospital Shijiazhuang China
| | - Xin Jiang
- Department of Neurology Hebei General Hospital Shijiazhuang China
| | - Guo‐Dong Xu
- Department of Neurology Hebei General Hospital Shijiazhuang China
| | - Gui‐Min Zheng
- Department of Neurology Hebei General Hospital Shijiazhuang China
| | - Zhi‐Peng Tang
- Department of Neurology Hebei General Hospital Shijiazhuang China
| | - Nan Yin
- Department of Neurology Hebei General Hospital Shijiazhuang China
| | - Xiu‐Qin Li
- Department of Neurology Hebei General Hospital Shijiazhuang China
| | - Yan‐Yan Yang
- Department of Neurology Hebei General Hospital Shijiazhuang China
| | - Pei‐Yuan Lv
- Department of Neurology Hebei Medical University Shijiazhuang China
- Department of Neurology Hebei General Hospital Shijiazhuang China
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36
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Ferrucci M, Biagioni F, Ryskalin L, Limanaqi F, Gambardella S, Frati A, Fornai F. Ambiguous Effects of Autophagy Activation Following Hypoperfusion/Ischemia. Int J Mol Sci 2018; 19:ijms19092756. [PMID: 30217100 PMCID: PMC6163197 DOI: 10.3390/ijms19092756] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2018] [Revised: 09/10/2018] [Accepted: 09/11/2018] [Indexed: 01/07/2023] Open
Abstract
Autophagy primarily works to counteract nutrient deprivation that is strongly engaged during starvation and hypoxia, which happens in hypoperfusion. Nonetheless, autophagy is slightly active even in baseline conditions, when it is useful to remove aged proteins and organelles. This is critical when the mitochondria and/or proteins are damaged by toxic stimuli. In the present review, we discuss to that extent the recruitment of autophagy is beneficial in counteracting brain hypoperfusion or, vice-versa, its overactivity may per se be detrimental for cell survival. While analyzing these opposite effects, it turns out that the autophagy activity is likely not to be simply good or bad for cell survival, but its role varies depending on the timing and amount of autophagy activation. This calls for the need for an appropriate autophagy tuning to guarantee a beneficial effect on cell survival. Therefore, the present article draws a theoretical pattern of autophagy activation, which is hypothesized to define the appropriate timing and intensity, which should mirrors the duration and severity of brain hypoperfusion. The need for a fine tuning of the autophagy activation may explain why confounding outcomes occur when autophagy is studied using a rather simplistic approach.
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Affiliation(s)
- Michela Ferrucci
- Department of Translational Research and New Technologies in Medicine and Surgery, University of Pisa, Via Roma 55, 56126 Pisa, Italy.
| | | | - Larisa Ryskalin
- Department of Translational Research and New Technologies in Medicine and Surgery, University of Pisa, Via Roma 55, 56126 Pisa, Italy.
| | - Fiona Limanaqi
- Department of Translational Research and New Technologies in Medicine and Surgery, University of Pisa, Via Roma 55, 56126 Pisa, Italy.
| | | | | | - Francesco Fornai
- Department of Translational Research and New Technologies in Medicine and Surgery, University of Pisa, Via Roma 55, 56126 Pisa, Italy.
- IRCCS Neuromed, Via Atinense 18, 86077 Pozzilli (IS), Italy.
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37
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Dong Y, Pu K, Duan W, Chen H, Chen L, Wang Y. Involvement of Akt/CREB signaling pathways in the protective effect of EPA against interleukin-1β-induced cytotoxicity and BDNF down-regulation in cultured rat hippocampal neurons. BMC Neurosci 2018; 19:52. [PMID: 30189852 PMCID: PMC6128001 DOI: 10.1186/s12868-018-0455-7] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2018] [Accepted: 08/31/2018] [Indexed: 12/21/2022] Open
Abstract
BACKGROUND Our published data have indicated that the omega-3 polyunsaturated fatty acid eicosapentaenoic acid (EPA) provides beneficial effects by attenuating neuronal damage induced by interleukin-1β (IL-1β), and up-regulation of the expression of brain-derived neurotrophic factor (BDNF) represents a crucial part in the neuroprotective effect of EPA. However, the mechanisms of how EPA regulates BDNF expression remains incompletely understood. The present study investigated the role of Akt/CREB signaling in the effect of EPA on BDNF expression and its neuroprotective effect. RESULTS The present results showed that IL-1β reduced hippocampal neuronal viability and that EPA showed a concentration-dependent neuroprotective effect, but the neuroprotective effects of EPA were abolished by inhibition of Akt using KRX-0401, an inhibitor of Akt. Treatment of hippocampal neurons with EPA also ameliorated the decrease in Akt and CREB phosphorylation induced by IL-1β and BDNF down-regulation mediated by IL-1β. However, inhibition of Akt reversed the effect of EPA on levels of p-Akt, p-CREB, and BDNF. CONCLUSIONS Our data indicate that EPA elicited neuroprotection toward IL-1β-induced cell damage and BDNF decrease and that its effects potentially occurred via the Akt/CREB signaling pathway.
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Affiliation(s)
- YiLong Dong
- School of Medicine, Yunnan University, 2 Cuihu Bei Road, Kunming, 650091 Yunnan People’s Republic of China
| | - KangJing Pu
- School of Medicine, Yunnan University, 2 Cuihu Bei Road, Kunming, 650091 Yunnan People’s Republic of China
| | - WenJing Duan
- The First Affiliated Hospital of Kunming Medical University, 295 Xichang Road, Kunming, 650031 Yunnan People’s Republic of China
| | - HuiCheng Chen
- School of Medicine, Yunnan University, 2 Cuihu Bei Road, Kunming, 650091 Yunnan People’s Republic of China
| | - LiXing Chen
- The First Affiliated Hospital of Kunming Medical University, 295 Xichang Road, Kunming, 650031 Yunnan People’s Republic of China
| | - YanMei Wang
- The First Affiliated Hospital of Kunming Medical University, 295 Xichang Road, Kunming, 650031 Yunnan People’s Republic of China
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38
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Wang DP, Yin H, Kang K, Lin Q, Su SH, Hai J. The potential protective effects of cannabinoid receptor agonist WIN55,212-2 on cognitive dysfunction is associated with the suppression of autophagy and inflammation in an experimental model of vascular dementia. Psychiatry Res 2018; 267:281-288. [PMID: 29945070 DOI: 10.1016/j.psychres.2018.06.012] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/08/2017] [Revised: 06/07/2018] [Accepted: 06/07/2018] [Indexed: 12/17/2022]
Abstract
Vascular dementia (VaD) is characteristic of chronic brain ischemia and progressive memory decline, which has a high incidence in the elderly. However, there are no effective treatments for VaD, and the underlying mechanism of its pathogenesis remains unclear. This study investigated the effects of a synthetic cannabinoid receptor agonist WIN55,212-2 (WIN) on VaD, and molecular mechanisms of the effects. VaD model was induced by 2-vessel occlusion (2VO). Spatial reference learning was evaluated by the Morris water maze, and recognition memory was assessed using the novel object recognition test. Autophagy-related proteins [microtubule-associated protein 1 light chain 3 (LC-3) and Beclin-1] were examined by immunohistochemistry and Western blot. Caspase-3 was detected by Western blot. Inflammatory factors, tumor necrosis factor alpha (TNF-α) and interleukin 1 beta (IL-1β), were estimated by reverse transcription-polymerase chain reaction (RT-PCR) and Western blot. VaD increased the levels of LC-3, Beclin-1, and inflammatory factors, which were reversed by chronic treatment with WIN. WIN decreased the expression of Capase-3, and improved the learning and memory impairment of VaD rats. These data indicate that WIN exerts a neuroprotective effect on the cognitive deficits of VaD rats, which may be associated with the suppression of excessive autophagy and inflammation.
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Affiliation(s)
- Da-Peng Wang
- Department of Neurosurgery, Tong Ji Hospital, Tong Ji University School of Medicine, Shanghai 200065, China
| | - Hang Yin
- Department of Neurosurgery, Zao Zhuang Municipal Hospital, Zaozhuang, Shandong 277000, China
| | - Kai Kang
- Department of Research and Surveillance Evaluation, Shanghai Center for Health Promotion, Shanghai 200040, China
| | - Qi Lin
- Department of Pharmacy, Institutes of Medical Sciences, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China
| | - Shao-Hua Su
- Department of Neurosurgery, Tong Ji Hospital, Tong Ji University School of Medicine, Shanghai 200065, China.
| | - Jian Hai
- Department of Neurosurgery, Tong Ji Hospital, Tong Ji University School of Medicine, Shanghai 200065, China.
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Zhang W, Song JK, Yan R, Li L, Xiao ZY, Zhou WX, Wang ZZ, Xiao W, Du GH. Diterpene ginkgolides protect against cerebral ischemia/reperfusion damage in rats by activating Nrf2 and CREB through PI3K/Akt signaling. Acta Pharmacol Sin 2018. [PMID: 29542683 DOI: 10.1038/aps.2017.149] [Citation(s) in RCA: 71] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
Diterpene ginkgolides meglumine injection (DGMI) is a therapeutic extract of Ginkgo biloba L, which has been used for the treatment of cerebral ischemic stroke in China. Ginkgolides A, B and C are the main components of DGMI. This study was designed to investigate the neuroprotective effects of DGMI components against ischemic stroke in vivo and in vitro. Acute cerebral ischemic injury was induced in rats by occlusion of the middle cerebral artery (MCA) for 1.5 h followed by 24 h reperfusion. The rats were treated with DGMI (1, 3 and 10 mg/kg, iv) at the onset of reperfusion and 12 h after reperfusion. Administration of DGMI significantly decreased rat neurological deficit scores, reduced brain infarct volume, and induced protein kinase B (Akt) phosphorylation, which prompted the nuclear translocation of nuclear factor-erythroid 2-related factor 2 (Nrf2) and phosphorylation of the survival regulatory protein cyclic AMP-responsive element binding protein (CREB). Nrf2 activation led to expression of the downstream protein heme oxygenase-1 (HO-1). In addition, PC12 cells were subjected to oxygen-glucose deprivation/reperfusion (OGD/R) in vitro, treatment with DGMI (1, 10 and 20 μg/mL) or ginkgolides A, B or C (10 μmol/L for each) significantly reduced PC12 cell death and increased phosphorylation of Akt, nuclear translocation of Nrf2 and activation of CREB. Activation of Nrf2 and CREB could be reversed by co-treatment with a phosphoinositide-3-kinase (PI3K) inhibitor LY294002. These observations suggest that ginkgolides act as novel extrinsic regulators activating both Akt/Nrf2 and Akt/CREB signaling pathways, protecting against cerebral ischemia/reperfusion (I/R) damage in vivo and in vitro.
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40
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Inhibition of excessive autophagy and mitophagy mediates neuroprotective effects of URB597 against chronic cerebral hypoperfusion. Cell Death Dis 2018; 9:733. [PMID: 29955058 PMCID: PMC6023888 DOI: 10.1038/s41419-018-0755-y] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2018] [Revised: 05/11/2018] [Accepted: 05/24/2018] [Indexed: 12/13/2022]
Abstract
URB597 (URB) has therapeutic potential for treating chronic cerebral hypoperfusion (CCH)-induced neuronal death. The present study investigated the protective effects of URB on autopahgy and mitophagy in a CCH model as well as the underlying mechanisms. The ultrastructural changes were examined by electron microscopy. The mitochondrial membrane potential was assessed by immunofluorescence. The expressions of autophagy-related proteins (beclin-1, p62, and LC3), lysosome-related proteins (CTSD and LAMP1), and mitophagy-related proteins (BNIP3, cyt C and parkin) were evaluated by western blotting, and the interaction of beclin-1 and Bcl-2 were determined by immunoprecipitation. CCH significantly decreased the protein expression of p62, CTSD, and LAMP1 and increased the protein expression of beclin-1, parkin, and BNIP3, the LC3-II to LC3-I ratio, and the release of cyt C from mitochondria to cytoplasm. Furthermore, CCH induced the accumulation of ubiquitinated proteins in PSDs. However, URB significantly reversed these results. Besides, URB significantly inhibited the beclin-1 from beclin-1/Bcl-2 complex to whole-cell lysates. The above results indicate that URB could inhibit impaired autophagy degradation and the disruption of beclin-1/Bcl-2 complex and subsequently cut off BNIP3-cyt C- and parkin-required mitophagy, finally preventing the abnormal excessive autophagy and mitophagy. These findings provide new insights that URB is a promising agent for therapeutic management of CCH.
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41
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Zhang M, Zhai Y, Sun Y, Zhang W, Li Q, Brann D, Wang R. Swimming improves cognitive reserve in ovariectomized rats and enhances neuroprotection after global cerebral ischemia. Brain Res 2018; 1692:110-117. [PMID: 29778778 DOI: 10.1016/j.brainres.2018.05.020] [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: 02/09/2018] [Revised: 05/02/2018] [Accepted: 05/17/2018] [Indexed: 12/14/2022]
Abstract
Cognitive reserve has been proposed to account for different responses to brain damage or pathology. Factors implicated to influence cognitive reserve include cognitive engagement, physical activity, leisure activities, stress levels, and diet. Furthermore, long-term ovariectomy (OVX), such as occurs in women that have underwent surgical menopause, has been reported to increase the risk of cognitive impairment. In the current study, we examined whether swimming improves cognitive function in long-term OVX-rats. We also examined the neuroprotective effect of swimming after global cerebral ischemia (GCI) and explored the effect of swimming preconditioning on activation of the MAPK cascade signaling pathway, synaptic proteins and brain-derived growth factor (BDNF) - all factors implicated in regulating synaptic plasticity and neuroprotection in the brain. Adult Sprague-Dawley OVX-rats were randomly assigned into four groups: Sham (Sh), Sham + Swimming (Sh + Sw), Ischemia/Reperfusion (IR) and IR + Sw. Our results revealed that (1) Morris water maze and shuttle box test analysis revealed that swimming improved cognitive function in OVX-rats, (2) The levels of PSD95 and synaptophysin, as well as the protein expression of p-ERK, p-CREB and BDNF were all increased in the hippocampus after swimming with or without GCI, and (3) Swimming also increased the number of surviving neurons and IL4 protein expression, while decreasing the Iba1 (a microglia marker) level in the hippocampus. In conclusion, our study demonstrates that swimming improves memory in OVX-rats, and that swimming preconditioning enhances the neuroprotective ERK1/2/CREB/BDNF pathway signaling and ameliorates brain damage after GCI in OVX-rats, which may be closely related to induction of an IL4-mediated anti-inflammatory mechanism.
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Affiliation(s)
- Meng Zhang
- Neurobiology Institute of Medical Research Center, International Science & Technology Cooperation Base of Geriatric Medicine, North China University of Science and Technology, Tangshan 063210, China
| | - Yating Zhai
- Neurobiology Institute of Medical Research Center, International Science & Technology Cooperation Base of Geriatric Medicine, North China University of Science and Technology, Tangshan 063210, China
| | - Yaping Sun
- Neurobiology Institute of Medical Research Center, International Science & Technology Cooperation Base of Geriatric Medicine, North China University of Science and Technology, Tangshan 063210, China
| | - Wenli Zhang
- Neurobiology Institute of Medical Research Center, International Science & Technology Cooperation Base of Geriatric Medicine, North China University of Science and Technology, Tangshan 063210, China
| | - Qian Li
- Neurobiology Institute of Medical Research Center, International Science & Technology Cooperation Base of Geriatric Medicine, North China University of Science and Technology, Tangshan 063210, China
| | - Darrell Brann
- Department of Neuroscience and Regenerative Medicine, Medical College of Georgia, Augusta University, Augusta 30912, USA
| | - Ruimin Wang
- Neurobiology Institute of Medical Research Center, International Science & Technology Cooperation Base of Geriatric Medicine, North China University of Science and Technology, Tangshan 063210, China.
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42
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Liu B, Gao JM, Li F, Gong QH, Shi JS. Gastrodin Attenuates Bilateral Common Carotid Artery Occlusion-Induced Cognitive Deficits via Regulating Aβ-Related Proteins and Reducing Autophagy and Apoptosis in Rats. Front Pharmacol 2018; 9:405. [PMID: 29755351 PMCID: PMC5932202 DOI: 10.3389/fphar.2018.00405] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2018] [Accepted: 04/09/2018] [Indexed: 12/11/2022] Open
Abstract
Gastrodin (GAS), an active constituent extracted from Gastrodia elata Blume, is used to treat ischemic stroke, epilepsy, dizziness, and dementia for centuries in China. This study examined its effects on vascular dementia (VD) and the underlying molecular mechanisms. VD was established by ligation of bilateral common carotid artery occlusion (BCCAO). A total of 7 days after BCCAO surgery, GAS (15, 30, and 60 mg/kg) was orally administered for 28 consecutive days to evaluate therapeutic effects. Cognitive function was tested by the Morris water maze. The neuronal morphological changes were examined via Hematoxylin-Eosin staining. Flow cytometry was used for evaluating apoptosis in the hippocampi. The target protein expression was examined by Western blot. The results showed that BCCAO induced cognitive impairment, hippocampus CA1 and CA3 pyramidal neuron damage, beta-amyloid (Aβ) deposition, excessive autophagy, and apoptosis. GAS treatment significantly improved BCCAO-induced cognitive deficits and hippocampus neuron damage. Molecular analysis revealed that GAS exerted the protective effect via reducing the levels of Aβ1-40/42, APP, and β-site APP-cleaving enzyme 1 expression, and increasing Aβ-related protein, a disintegrin and metalloprotease 10, and insulin degrading enzyme expression. Meanwhile, GAS inhibited excessive autophagy via decreasing Beclin-1, LC3-II, and p62 levels. Furthermore, GAS inhibited apoptosis through the downregulation of Bax and upregulation of Bcl-2. Moreover, P38 MAPK signaling pathway was involved in the process. Our findings demonstrate that GAS was effective in the treatment of BCCAO-induced VD via targeting Aβ-related protein formation and inhibiting autophagy and apoptosis of hippocampus neurons.
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Affiliation(s)
- Bo Liu
- School of Pharmacy, Shanghai University of Traditional Chinese Medicine, Shanghai, China.,Key Laboratory of Basic Pharmacology of Ministry of Education and Joint International Research Laboratory of Ethnomedicine of Ministry of Education, Zunyi Medical University, Zunyi, China
| | - Jian-Mei Gao
- Key Laboratory of Basic Pharmacology of Ministry of Education and Joint International Research Laboratory of Ethnomedicine of Ministry of Education, Zunyi Medical University, Zunyi, China
| | - Fei Li
- Key Laboratory of Basic Pharmacology of Ministry of Education and Joint International Research Laboratory of Ethnomedicine of Ministry of Education, Zunyi Medical University, Zunyi, China
| | - Qi-Hai Gong
- Key Laboratory of Basic Pharmacology of Ministry of Education and Joint International Research Laboratory of Ethnomedicine of Ministry of Education, Zunyi Medical University, Zunyi, 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, China
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43
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Dai C, Ciccotosto GD, Cappai R, Wang Y, Tang S, Hoyer D, Schneider EK, Velkov T, Xiao X. Rapamycin Confers Neuroprotection against Colistin-Induced Oxidative Stress, Mitochondria Dysfunction, and Apoptosis through the Activation of Autophagy and mTOR/Akt/CREB Signaling Pathways. ACS Chem Neurosci 2018; 9:824-837. [PMID: 29257864 DOI: 10.1021/acschemneuro.7b00323] [Citation(s) in RCA: 61] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Our previous studies showed that colistin-induced neurotoxicity involves apoptosis and oxidative damage. The present study demonstrates a neuroprotective effect of rapamycin against colistin-induced neurotoxicity in vitro and in vivo. In a mouse model, colistin treatment (18 mg/kg/d; 14 days) produced marked neuronal mitochondria damage in the cerebral cortex and increased activation of caspase-9 and -3. Rapamycin cotreatment (2.5 mg/kg/d) effectively reduced this neurotoxic effect. In an in vitro mouse neuroblastoma-2a (N2a) cell culture model, rapamycin pretreatment (500 nM) reduced colistin (200 μM) induced cell death from ∼50% to 72%. Moreover, rapamycin showed a marked neuroprotective effect in the N2a cells by decreasing intracellular reactive oxygen species (ROS) production and by up-regulating the activities of the anti-ROS enzymes superoxide dismutase and catalase and recovering glutathione (GSH) levels to normal. Moreover, rapamycin pretreatment protected against colistin-induced mitochondrial dysfunction, caspase activation, and subsequent apoptosis by up-regulating autophagy and activating the Akt/CREB, NGF, and Nrf2 pathways, while inhibiting p53 signaling. Taken together, this is the first study to demonstrate that rapamycin protects against colistin-induced neurotoxicity by activating autophagy, inhibiting oxidative stress, mitochondria dysfunction, and apoptosis. Our data highlight that regulating autophagy to rescue neurons from apoptosis may become a new targeted therapy to relieve the adverse neurotoxic effects associated with colistin therapy.
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Affiliation(s)
- Chongshan Dai
- Department of Veterinary Pharmacology and Toxicology, College of Veterinary Medicine, China Agricultural University, No.2 Yuanmingyuan West Road, Beijing 100193, P. R. China
| | - Giuseppe D. Ciccotosto
- Department of Pathology, Bio21 Molecular Science and Biotechnology Institute, The University of Melbourne, Parkville, Victoria 3052, Australia
| | - Roberto Cappai
- Department of Pathology, Bio21 Molecular Science and Biotechnology Institute, The University of Melbourne, Parkville, Victoria 3052, Australia
| | - Yang Wang
- Department of Veterinary Pharmacology and Toxicology, College of Veterinary Medicine, China Agricultural University, No.2 Yuanmingyuan West Road, Beijing 100193, P. R. China
| | - Shusheng Tang
- Department of Veterinary Pharmacology and Toxicology, College of Veterinary Medicine, China Agricultural University, No.2 Yuanmingyuan West Road, Beijing 100193, P. R. China
| | - Daniel Hoyer
- Department of Pharmacology & Therapeutics, School of Biomedical Sciences, Faculty of Medicine, Dentistry and Health Sciences, The University of Melbourne, Parkville, Victoria 3010, Australia
- The Florey Institute of Neuroscience and Mental Health, The University of Melbourne, 30 Royal Parade, Parkville, Victoria 3052, Australia
- Department of Molecular Medicine, The Scripps Research Institute, 10550 N. Torrey Pines Road, La Jolla, California 92037, United States
| | - Elena K. Schneider
- Drug Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University, 381 Royal Parade, Parkville, Victoria 3052, Australia
| | - Tony Velkov
- Drug Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University, 381 Royal Parade, Parkville, Victoria 3052, Australia
| | - Xilong Xiao
- Department of Veterinary Pharmacology and Toxicology, College of Veterinary Medicine, China Agricultural University, No.2 Yuanmingyuan West Road, Beijing 100193, P. R. China
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44
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Liu W, Zhao Y, Zhang X, Ji J. Simvastatin ameliorates cognitive impairments via inhibition of oxidative stress‑induced apoptosis of hippocampal cells through the ERK/AKT signaling pathway in a rat model of senile dementia. Mol Med Rep 2017; 17:1885-1892. [PMID: 29257256 DOI: 10.3892/mmr.2017.8098] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2016] [Accepted: 10/06/2017] [Indexed: 11/06/2022] Open
Affiliation(s)
- Wenting Liu
- Department of Neurology, Weifang People's Hospital, Weifang, Shandong 261041, P.R. China
| | - Yan Zhao
- Department of Neurology, The Affiliated Qingdao Hiser Hospital of Qingdao University, Qingdao, Shandong 266033, P.R. China
| | - Xinyu Zhang
- Department of Neurology, Weifang People's Hospital, Weifang, Shandong 261041, P.R. China
| | - Jiangang Ji
- Department of Encephalopathy, Traditional Chinese Medicine Hospital of Weifang, Weifang, Shandong 261041, P.R. China
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45
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Tan Z, Chen Y, Xie W, Liu X, Zhu Y, Zhu Y. Nimodipine attenuates tau phosphorylation at Ser396 via miR-132/GSK-3β pathway in chronic cerebral hypoperfusion rats. Eur J Pharmacol 2017; 819:1-8. [PMID: 29042207 DOI: 10.1016/j.ejphar.2017.10.027] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2017] [Revised: 09/20/2017] [Accepted: 10/13/2017] [Indexed: 12/20/2022]
Abstract
Chronic cerebral hypofusion (CCH) promotes hyperphosphorylation of tau proteins, a key neuropathological trait that reflects neurodegenerative disorders. Nimodipine, an L-type calcium channel antagonist, has been reported to show neuroprotective effects. In this study, we investigated the potential mechanism of nimodipine in tauopathies induced by CCH. MiR-132 is downregulated in tauopathies such as AD and directly targets tau mRNA to regulate its expression. Here, we report that CCH induced miR-132 deficiency and increased tau phosphorylation at Ser396 while tau expression was not influenced. Nimodipine treatment attenuated CCH induced tau phosphorylation by up-regulating expression of miR-132. Furthermore, nimodipine inhibited activation of GSK-3β and neuronal apoptosis induced by CCH. Interestingly, GSK-3βmRNA level negatively correlated with the expression of miR-132. These findings support a role for nimodipine inhibiting tau phosphorylation at Ser396 via miR-132/GSK-3β. Therefore, nimodipine may be a candidate for the treatment of tauopathy present in CCH.
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Affiliation(s)
- Zihu Tan
- Hubei Provincial Hospital of Traditional Chinese Medicine, Wuhan, Hubei 430061, China; Hubei Province Academy of Traditional Chinese Medicine, Wuhan, Hubei 430074, China
| | - Yan Chen
- Hubei University of Chinese Medicine, Wuhan, Hubei 430061, China.
| | - Wenting Xie
- Hubei University of Chinese Medicine, Wuhan, Hubei 430061, China
| | - Xi Liu
- Hubei University of Chinese Medicine, Wuhan, Hubei 430061, China
| | - Yuanyue Zhu
- Hubei University of Chinese Medicine, Wuhan, Hubei 430061, China
| | - Yan Zhu
- Nanjing University of Chinese Medicine, Nanjing, Jiangsu 210023, China
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46
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Guirao V, Martí-Sistac O, DeGregorio-Rocasolano N, Ponce J, Dávalos A, Gasull T. Specific rescue by ortho-hydroxy atorvastatin of cortical GABAergic neurons from previous oxygen/glucose deprivation: role of pCREB. J Neurochem 2017; 143:359-374. [PMID: 28881028 DOI: 10.1111/jnc.14210] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2017] [Revised: 08/11/2017] [Accepted: 08/30/2017] [Indexed: 12/15/2022]
Abstract
The statin atorvastatin (ATV) given as a post-treatment has been reported beneficial in stroke, although the mechanisms involved are not well understood so far. Here, we investigated in vitro the effect of post-treatment with ATV and its main bioactive metabolite ortho-hydroxy ATV (o-ATV) on neuroprotection after oxygen and glucose deprivation (OGD), and the role of the pro-survival cAMP response element-binding protein (CREB). Post-OGD treatment of primary cultures of rat cortical neurons with o-ATV, but not ATV, provided neuroprotection to a specific subset of cortical neurons that were large and positive for glutamic acid decarboxylase (large-GAD(+) neurons, GABAergic). Significantly, only these GABAergic neurons showed an increase in phosphorylated CREB (pCREB) early after neuronal cultures were treated post-OGD with o-ATV. We found that o-ATV, but not ATV, increased the neuronal uptake of glutamate from the medium; this provides a rationale for the specific effect of o-ATV on pCREB in large-GABAergic neurons, which have a higher ratio of synaptic (pCREB-promoting) vs extrasynaptic (pCREB-reducing) N-methyl-D-aspartate (NMDA) receptors (NMDAR) than that of small-non-GABAergic neurons. When we pharmacologically increased pCREB levels post-OGD in non-GABAergic neurons, through the selective activation of synaptic NMDAR, we observed as well long-lasting neuronal survival. We propose that the statin metabolite o-ATV given post-OGD boosts the intrinsic pro-survival factor pCREB in large-GABAergic cortical neurons in vitro, this contributing to protect them from OGD.
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Affiliation(s)
- Verónica Guirao
- Cellular and Molecular Neurobiology Research Group, Department of Neurosciences, Germans Trias i Pujol Research Institute, Badalona, Catalonia, Spain
| | - Octavi Martí-Sistac
- Cellular and Molecular Neurobiology Research Group, Department of Neurosciences, Germans Trias i Pujol Research Institute, Badalona, Catalonia, Spain.,Universitat Autònoma de Barcelona, Bellaterra, Catalonia, Spain
| | - Núria DeGregorio-Rocasolano
- Cellular and Molecular Neurobiology Research Group, Department of Neurosciences, Germans Trias i Pujol Research Institute, Badalona, Catalonia, Spain
| | - Jovita Ponce
- Cellular and Molecular Neurobiology Research Group, Department of Neurosciences, Germans Trias i Pujol Research Institute, Badalona, Catalonia, Spain
| | - Antoni Dávalos
- Department of Neurosciences, Hospital Germans Trias i Pujol, Badalona, Catalonia, Spain
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47
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Liu Z, Hu M, Lu P, Wang H, Qi Q, Xu J, Xiao Y, Fan M, Jia Y, Zhang D. Cerebrolysin alleviates cognitive deficits induced by chronic cerebral hypoperfusion by increasing the levels of plasticity-related proteins and decreasing the levels of apoptosis-related proteins in the rat hippocampus. Neurosci Lett 2017; 651:72-78. [DOI: 10.1016/j.neulet.2017.04.022] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2016] [Revised: 03/31/2017] [Accepted: 04/11/2017] [Indexed: 10/19/2022]
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