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Nguyen QTN, Park J, Kim DY, Tran DT, Han IO. Forskolin rescues hypoxia-induced cognitive dysfunction in zebrafish with potential involvement of O-GlcNAc cycling regulation. Biochem Pharmacol 2024; 221:116032. [PMID: 38281601 DOI: 10.1016/j.bcp.2024.116032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2023] [Revised: 12/28/2023] [Accepted: 01/23/2024] [Indexed: 01/30/2024]
Abstract
Repeated sublethal hypoxia exposure induces brain inflammation and affects the initiation and progression of cognitive dysfunction. Experiments from the current study showed that hypoxic exposure downregulates PKA/CREB signaling, which is restored by forskolin (FSK), an adenylate cyclase activator, in both Neuro2a (N2a) cells and zebrafish brain. FSK significantly protected N2a cells from hypoxia-induced cell death and neurite shrinkage. Intraperitoneal administration of FSK for 5 days on zebrafish additionally led to significant recovery from hypoxia-induced social interaction impairment and learning and memory (L/M) deficit. FSK suppressed hypoxia-induced neuroinflammation, as indicated by the observed decrease in NF-κB activation and GFAP expression. We further investigated the potential effect of FSK on O-GlcNAcylation changes induced by hypoxia. Intriguingly FSK induced marked upregulation of the protein level of O-GlcNAc transferase catalyzing addition of the GlcNAc group to target proteins, accompanied by elevated O-GlcNAcylation of nucleocytoplasmic proteins. The hypoxia-induced O-GlcNAcylation decrease in the brain of zebrafish was considerably restored following FSK treatment. Based on the collective results, we propose that FSK rescues hypoxia-induced cognitive dysfunction, potentially through regulation of HBP/O-GlcNAc cycling.
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Affiliation(s)
- Quynh T N Nguyen
- Department of Biomedical Science, Program in Biomedical Science and Engineering, College of Medicine, Inha University, Incheon, South Korea
| | - Jiwon Park
- Department of Biomedical Science, Program in Biomedical Science and Engineering, College of Medicine, Inha University, Incheon, South Korea
| | - Dong Yeol Kim
- Department of Biomedical Science, Program in Biomedical Science and Engineering, College of Medicine, Inha University, Incheon, South Korea
| | - Duong T Tran
- Department of Biomedical Science, Program in Biomedical Science and Engineering, College of Medicine, Inha University, Incheon, South Korea
| | - Inn Oc Han
- Department of Biomedical Science, Program in Biomedical Science and Engineering, College of Medicine, Inha University, Incheon, South Korea.
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2
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Zhang T, Luu MDA, Dolga AM, Eisel ULM, Schmidt M. The old second messenger cAMP teams up with novel cell death mechanisms: potential translational therapeutical benefit for Alzheimer's disease and Parkinson's disease. Front Physiol 2023; 14:1207280. [PMID: 37405135 PMCID: PMC10315612 DOI: 10.3389/fphys.2023.1207280] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2023] [Accepted: 06/07/2023] [Indexed: 07/06/2023] Open
Abstract
Alzheimer's disease (AD) and Parkinson's disease (PD) represent the most prevalent neurodegenerative disorders severely impacting life expectancy and quality of life of millions of people worldwide. AD and PD exhibit both a very distinct pathophysiological disease pattern. Intriguingly, recent researches, however, implicate that overlapping mechanisms may underlie AD and PD. In AD and PD, novel cell death mechanisms, encompassing parthanatos, netosis, lysosome-dependent cell death, senescence and ferroptosis, apparently rely on the production of reactive oxygen species, and seem to be modulated by the well-known, "old" second messenger cAMP. Signaling of cAMP via PKA and Epac promotes parthanatos and induces lysosomal cell death, while signaling of cAMP via PKA inhibits netosis and cellular senescence. Additionally, PKA protects against ferroptosis, whereas Epac1 promotes ferroptosis. Here we review the most recent insights into the overlapping mechanisms between AD and PD, with a special focus on cAMP signaling and the pharmacology of cAMP signaling pathways.
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Affiliation(s)
- Tong Zhang
- Department of Molecular Pharmacology, University of Groningen, Groningen, Netherlands
- Department of Molecular Neurobiology, Groningen Institute for Evolutionary Life Sciences, University of Groningen, Groningen, Netherlands
| | - Minh D. A. Luu
- Department of Molecular Pharmacology, University of Groningen, Groningen, Netherlands
| | - Amalia M. Dolga
- Department of Molecular Pharmacology, University of Groningen, Groningen, Netherlands
| | - Ulrich L. M. Eisel
- Department of Molecular Neurobiology, Groningen Institute for Evolutionary Life Sciences, University of Groningen, Groningen, Netherlands
| | - Martina Schmidt
- Department of Molecular Pharmacology, University of Groningen, Groningen, Netherlands
- Groningen Research Institute for Asthma and COPD, GRIAC, University Medical Center Groningen, University of Groningen, Groningen, Netherlands
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3
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Hao C, Han M, Wang W, Yang C, Wang J, Guo Y, Xu T, Zhang L, Li C. The neuroprotective effects of peracetylated chitosan oligosaccharides against β-amyloid-induced cognitive deficits in rats. MARINE LIFE SCIENCE & TECHNOLOGY 2023; 5:211-222. [PMID: 37275539 PMCID: PMC10232394 DOI: 10.1007/s42995-023-00172-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/15/2022] [Accepted: 01/17/2023] [Indexed: 06/07/2023]
Abstract
Chitosan oligosaccharides (COSs) have been reported to possess a broad range of activities such as antitumor, antioxidant and neuroprotective activities. In this study, the protective effects and mechanisms of peracetylated chitosan oligosaccharides (PACOs) against Aβ-induced cognitive deficits were investigated in Sprague-Dawley (SD) rats. PACOs treatment significantly improved the learning and memory function of Alzheimer's disease (AD) rats and attenuated the neuron cell damage caused by Aβ. PACOs also markedly reduced the levels of lactate dehydrogenase (LDH) and Malondialdehyde (MDA) and decreased the phosphorylation of Tau protein to inhibit oxidative injury and inflammatory responses in AD rats. Further studies indicated that PACOs may promote the repair of Aβ induced nerve damage and inhibit neuronal apoptosis mainly through regulating PI3K/Akt/GSK3β signaling pathway. Consistently, the transcriptome analysis verified that the differentially expressed genes (DEGs) were mainly involved in neuron development and the PI3K-Akt signaling pathway. Taken together, peracetylated chitosan oligosaccharides (PACOs) have the potential to be developed into novel anti-AD agents targeting the cellular PI3K/Akt/GSK3β signaling pathway. Supplementary Information The online version contains supplementary material available at 10.1007/s42995-023-00172-3.
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Affiliation(s)
- Cui Hao
- Medical Research Center, Affiliated Hospital of Qingdao University, Qingdao, 266003 China
- Key Laboratory of Marine Drugs, Ministry of Education, Ocean University of China, Qingdao, 266003 China
- Center of Integrated Traditional and Western Medicine, Qingdao University, Qingdao, 266003 China
| | - Minmin Han
- Medical Research Center, Affiliated Hospital of Qingdao University, Qingdao, 266003 China
- Center of Integrated Traditional and Western Medicine, Qingdao University, Qingdao, 266003 China
- Qingdao Women’s and Children’s Hospital, Qingdao, 266003 China
| | - Wei Wang
- Key Laboratory of Marine Drugs, Ministry of Education, Ocean University of China, Qingdao, 266003 China
| | - Cheng Yang
- Key Laboratory of Marine Drugs, Ministry of Education, Ocean University of China, Qingdao, 266003 China
| | - Jigang Wang
- Department of Pathology, Affiliated Hospital of Qingdao University, Qingdao, 266003 China
| | - Yunliang Guo
- Medical Research Center, Affiliated Hospital of Qingdao University, Qingdao, 266003 China
- Center of Integrated Traditional and Western Medicine, Qingdao University, Qingdao, 266003 China
| | - Tao Xu
- Center of Integrated Traditional and Western Medicine, Qingdao University, Qingdao, 266003 China
- Qingdao Women’s and Children’s Hospital, Qingdao, 266003 China
| | - Lijuan Zhang
- Medical Research Center, Affiliated Hospital of Qingdao University, Qingdao, 266003 China
| | - Chunxia Li
- Key Laboratory of Marine Drugs, Ministry of Education, Ocean University of China, Qingdao, 266003 China
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4
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The Role of Melatonin on Behavioral Changes and Concomitant Oxidative Stress in icvAβ 1-42 Rat Model with Pinealectomy. Int J Mol Sci 2021; 22:ijms222312763. [PMID: 34884567 PMCID: PMC8657444 DOI: 10.3390/ijms222312763] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2021] [Revised: 11/16/2021] [Accepted: 11/22/2021] [Indexed: 02/06/2023] Open
Abstract
One of the pathological hallmarks of Alzheimer’s disease (AD) associated with its progression that contributes to β-amyloid (Aβ) generation is oxidative stress (OS). Clinical data suggest that melatonin is a potent antioxidant that might be effective in the adjunctive therapy of this neurodegenerative disease. The present study aimed to explore the role of melatonin on behavioral changes and markers of OS in three rat models, namely, pinealectomy (pin) model of melatonin deficit, intracerebroventricular (icv)Aβ1-42 model of AD, and combination of both pin and Aβ1-42 model (pin+icvAβ1-42). The chronic injection with vehicle/melatonin (50 mg/kg, i.p. for 40 days) started on the same day of sham/pin and icv vehicle/Aβ1-42 infusion procedures. Anxiety in the open field and the elevated plus-maze test and cognitive responses in the object recognition test were tested between the 30th–35th day after the surgical procedures. Markers of OS in the frontal cortex (FC) and hippocampus were detected by the ELISA method. Melatonin treatment corrected the exacerbated anxiety response only in the pin+icvAβ1-42 model while it alleviated the cognitive impairment in the three models. Pinealectomy disturbed the antioxidant system via enhanced SOD activity and decreased GSH levels both in the FC and hippocampus. The Aβ1-42 model decreased the SOD activity in the FC and elevated the MDA level in the two brain structures. The pin+icvAβ1-42 model impaired the antioxidant system and elevated lipid peroxidation. Melatonin supplementation restored only the elevated MDA level of icvAβ1-42 and pin+icvAβ1-42 model in the hippocampus. In conclusion, our study reveals that the pin+icvAβ1-42 rat model triggers more pronounced anxiety and alterations in markers of OS that may be associated with melatonin deficit concomitant to icvAβ1-42-induced AD pathology.
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Protective effects of atorvastatin and rosuvastatin on 3,4-methylenedioxymethamphetamine (MDMA)-induced spatial learning and memory impairment. Inflammopharmacology 2021; 29:1807-1818. [PMID: 34780009 DOI: 10.1007/s10787-021-00891-y] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2021] [Accepted: 11/01/2021] [Indexed: 12/16/2022]
Abstract
3,4-Methylenedioxymethamphetamine (MDMA) or "Ecstasy", which has been used for recreational purposes, is shown to impair memory and brain functions. Statins, beyond their efficient cholesterol-lowering impact through inhibition of HMG-COA reductase enzyme, possess multiple actions referred to as pleiotropic effects. In this regard, we aimed to investigate the neuroprotective effects of atorvastatin and rosuvastatin on MDMA-induced neurotoxicity. Adult male Wistar rats received atorvastatin (5, 10, and 20 mg/kg; orally) and rosuvastatin (5, 10, 20 mg/kg; orally) for 21 consecutive days. Then, spatial memory and learning were evaluated by Morris water maze (MWM) test. Rats were intraperitoneally injected with MDMA (2.5, 5, and 10 mg/kg) 30 min before the first training session in 4 training days of MWM task. Afterward, rats were euthanized and their hippocampuses were dissected to evaluate reactive oxygen species (ROS) production, lipid peroxidation (LPO), and caspase-3 and -9 activities. Our findings showed that MDMA (5 and 10 mg/kg) significantly impaired spatial memory functions and dramatically increased ROS production, LPO, and caspase-3 and -9 activities compared to control. Also, atorvastatin (5, 10, and 20 mg/kg) and rosuvastatin (20 mg/kg) significantly improved memory performances and inhibited the elevation of ROS, LPO, and caspase-3 and -9 activities induced by MDMA. In conclusion, the results indicated that MDMA-induced cognitive impairment is followed by oxidative stress and activation of apoptotic pathways in the hippocampus. However, atorvastatin and rosuvastatin suppressed these deleterious consequences of MDMA and revealed protective effects against activation of pathways leading to cell damage.
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6
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Sanati M, Aminyavari S, Khodagholi F, Hajipour MJ, Sadeghi P, Noruzi M, Moshtagh A, Behmadi H, Sharifzadeh M. PEGylated superparamagnetic iron oxide nanoparticles (SPIONs) ameliorate learning and memory deficit in a rat model of Alzheimer's disease: Potential participation of STIMs. Neurotoxicology 2021; 85:145-159. [PMID: 34058247 DOI: 10.1016/j.neuro.2021.05.013] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2020] [Revised: 05/22/2021] [Accepted: 05/25/2021] [Indexed: 10/21/2022]
Abstract
The amyloid-beta (Aβ) fibrillation process seems to execute a principal role in the neuropathology of Alzheimer's disease (AD). Accordingly, novel therapeutic plans have concentrated on the inhibition or degradation of Aβ oligomers and fibrils. Biocompatible nanoparticles (NPs), e.g., gold and iron oxide NPs, take a unique capacity in redirecting Aβ fibrillation kinetics; nevertheless, their impacts on AD-related memory impairment have not been adequately evaluated in vivo. Here, we examined the effect of commercial PEGylated superparamagnetic iron oxide nanoparticles (SPIONs) on the learning and memory of an AD-animal model. The outcomes demonstrated the dose-dependent effect of SPIONs on Aβ fibrillation and learning and memory processes. In vitro and in vivo findings revealed that Low doses of SPIONs inhibited Aβ aggregation and ameliorated learning and memory deficit in the AD model, respectively. Enhanced level of hippocampal proteins, including brain-derived neurotrophic factor, BDNF, phosphorylated-cAMP response element-binding protein, p-CREB, and stromal interaction molecules, e.g., STIM1 and STIM2, were also observed. However, at high doses, SPIONs did not improve the detrimental impacts of Aβ fibrillation on spatial memory and hippocampal proteins expression. Overall, we revealed the potential capacity of SPIONs on retrieval of behavioral and molecular manifestations of AD in vivo, which needs further investigations to determine the mechanistic effect of SPIONs in the AD conundrum.
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Affiliation(s)
- Mehdi Sanati
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Birjand University of Medical Sciences, Birjand, Iran
| | - Samaneh Aminyavari
- Department of Neuroscience and Addiction Studies, School of Advanced Technologies in Medicine, Tehran University of Medical Sciences, Tehran, 1416753955, Iran
| | - Fariba Khodagholi
- Neuroscience Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Mohammad Javad Hajipour
- The Persian Gulf Biomedical Sciences Research Institute, Persian Gulf Marine Biotechnology Research Center, Bushehr University of Medical Sciences, Bushehr, 47263, Iran; Non-Communicable Diseases Research Center, Endocrinology and Metabolism Population Sciences Institute, Tehran University of Medical Sciences, Tehran, 1416753955, Iran
| | - Payam Sadeghi
- Department of Plastic Surgery, Cleveland Clinic, OH, USA
| | - Marzieh Noruzi
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, 1416753955, Iran
| | - Aynaz Moshtagh
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, 1416753955, Iran
| | - Homayoon Behmadi
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, 1416753955, Iran
| | - Mohammad Sharifzadeh
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, 1416753955, Iran.
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7
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Rahmati-Ahmadabad S, Azarbayjani MA, Broom D, Nasehi M. Effects of high-intensity interval training and flaxseed oil supplement on learning, memory and immobility: relationship with BDNF and TrkB genes. COMPARATIVE EXERCISE PHYSIOLOGY 2021; 17:273-283. [DOI: 10.3920/cep200046] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/30/2023]
Abstract
This study examined the independent and combined effects of high-intensity interval training (HIIT) and flaxseed oil supplementation on cognitive/executive functions in middle-aged rats. Hippocampal neurotropic brain factor (BDNF) and tyrosine kinase receptor B (TrkB) gene expression were also measured. Animals were randomly divided into groups including no exercise control and saline (CS), no exercise control and flaxseed oil supplement (CF), exercise training-and saline (TS) and exercise training and flaxseed oil supplement (TF). The training groups undertook a program of HIIT (10 weeks, five sessions per week) and the supplement groups received flaxseed oil supplement (300 mg/kg). The results showed that HIIT and flaxseed oil supplementation independently had positive effects on memory and learning (P<0.05). HIIT and flaxseed oil independently decreased immobility behaviour and increased hippocampal BDNF and TrkB genes expression (P<0.05). HIIT and flaxseed oil combination had a greater effect on some variables (hippocampal TrkB gene expression, memory and immobility) compared to each intervention alone (P<0.05). In conclusion, HIIT and flaxseed oil can independently improve cognitive/executive functions. In addition, HIIT had a greater positive effect than flaxseed oil supplementation on memory and immobility. The combination of HIIT and flaxseed oil supplement had a more positive effect compared to each intervention alone on memory, and immobility. Hippocampal BDNF gene expression did not significantly differ in the combination or independent groups. Thus, future work is needed on several other genes in different segments of the brain to find the additive-mechanisms involved in memory and immobility regulation and younger and older species of rat should be examined.
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Affiliation(s)
- S. Rahmati-Ahmadabad
- Department of Physical Education, Pardis Branch, Islamic Azad University, Pardis 1658174583, Iran
| | - M.-A. Azarbayjani
- Department of Exercise Physiology, Central Tehran Branch, Islamic Azad University, P.O. Box 1955847781, Tehran, Iran
| | - D.R. Broom
- Centre for Sport, Exercise and Life Sciences, Coventry University, Alison Gingell Building, 20 Whitefriars Street, Coventry, CV1 2DS, United Kingdom
| | - M. Nasehi
- Cognitive and Neuroscience Research Center (CNRC), Tehran Medical Sciences, Islamic Azad University, Tehran 193951495, Iran
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Gorny N, Kelly MP. Alterations in cyclic nucleotide signaling are implicated in healthy aging and age-related pathologies of the brain. VITAMINS AND HORMONES 2021; 115:265-316. [PMID: 33706951 DOI: 10.1016/bs.vh.2020.12.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
It is not only important to consider how hormones may change with age, but also how downstream signaling pathways that couple to hormone receptors may change. Among these hormone-coupled signaling pathways are the 3',5'-cyclic guanosine monophosphate (cGMP) and 3',5'-cyclic adenosine monophosphate (cAMP) intracellular second messenger cascades. Here, we test the hypothesis that dysfunction of cAMP and/or cGMP synthesis, execution, and/or degradation occurs in the brain during healthy and pathological diseases such as Alzheimer's disease, Parkinson's disease, and Huntington's disease. Although most studies report lower cyclic nucleotide signaling in the aged brain, with further reductions noted in the context of age-related diseases, there are select examples where cAMP signaling may be elevated in select tissues. Thus, therapeutics would need to target cAMP/cGMP in a tissue-specific manner if efficacy for select symptoms is to be achieved without worsening others.
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Affiliation(s)
- Nicole Gorny
- Department of Anatomy & Neurobiology, University of Maryland School of Medicine, Baltimore, MD, United States
| | - Michy P Kelly
- Department of Anatomy & Neurobiology, University of Maryland School of Medicine, Baltimore, MD, United States.
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Tabrizian K, Amelinia F, Belaran M, Pourheidar S, Mirzaei H, Fanoudi S. Tadalafil Reversed H-89 - and Scopolamine - Induced Spatial Learning Impairments in Male Rats. Drug Res (Stuttg) 2021; 71:275-283. [PMID: 33450772 DOI: 10.1055/a-1345-7832] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Accumulated evidence shows that the cAMP and cGMP signaling pathway plays an important role in memory function and neuronal plasticity. Phosphodiesterase 5 (PDE5) is a hopeful therapeutic target in AD (Alzheimer disease), and PDE5 inhibition may be a good therapeutic strategy for the treatment of AD. In the present study, the four-day bilateral intra-hippocampal infusion of H-89 as a protein kinase AII inhibitor (10 µM/side) and intra-peritoneal injections of tadalafil (20 mg/kg) and scopolamine (0.5 mg/kg) alone and also on combination on spatial learning in Morris water maze (MWM) were investigated. DMSO and saline were used as controls for H-89 and other mentioned drugs, respectively. Rats were trained for 4 days; each day included one block of four trials. Post- training probe trial tests were performed on day 5. Administration of H-89 and scopolamine led to a significant impairment in spatial learning compared to their related controls. But, combination of tadalafil/H-89 or tadalafil/scopolamine reversed H-89 or scopolamine- induced spatial learning deficits in MWM. Taken together, these results showed the probable regulatory effects of cGMP on cholinergic and cAMP/PKA signaling pathways in co-administrations of these mentioned drugs on spatial learning in MWM.
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Affiliation(s)
- Kaveh Tabrizian
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Zabol University of Medical Sciences, Zabol, Iran.,Toxicology and Addiction Research Center, Zabol University of Medical Sciences, Zabol, Iran
| | - Fatemeh Amelinia
- Students Research Committee, Faculty of Pharmacy, Zabol University of Medical Sciences, Zabol, Iran
| | - Maryam Belaran
- Department of Physiology, Faculty of Medicine, Zabol University of Medical Sciences, Zabol, Iran
| | - Soheil Pourheidar
- Students Research Committee, Faculty of Medicine, Zabol University of Medical Sciences, Zabol, Iran
| | - Hadi Mirzaei
- Department of Biotechnology, Faculty of Medicine, Zabol University of Medical Sciences, Zabol, Iran
| | - Sahar Fanoudi
- Department of Pharmacology, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
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Nazari E, Khanavi M, Amani L, Sharifzadeh M, Vazirian M, Saeedi M, Sanati M, Sadati Lamardi SN. Beneficial Effect of Brassica nigra Fixed Oil on The Changes in Memory Caused by Β-Amyloid in an Animal Model. PHARMACEUTICAL SCIENCES 2020. [DOI: 10.34172/ps.2020.19] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Affiliation(s)
- Elahe Nazari
- Department of Pharmacognosy, Faculty of Pharmacy, Tehran University of Medical Science, Tehran, Iran
| | - Mahnaz Khanavi
- Department of Pharmacognosy, Faculty of Pharmacy, Tehran University of Medical Science, Tehran, Iran
- Persian Medicine and Pharmacy Research Center, Tehran University of Medical Sciences, Tehran, Iran
| | - Leili Amani
- Department of Traditional Pharmacy, School of Traditional persian Medicine, Tehran University of Medical Science, Tehran, Iran
| | - Mohammad Sharifzadeh
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Tehran University of Medical Science, Tehran, Iran
| | - Mahdi Vazirian
- Department of Pharmacognosy, Faculty of Pharmacy, Tehran University of Medical Science, Tehran, Iran
| | - Mina Saeedi
- Persian Medicine and Pharmacy Research Center, Tehran University of Medical Sciences, Tehran, Iran
- Medicinal Plants Research Center, Faculty of Pharmacy, Tehran University of Medical Science, Tehran, Iran
| | - Mehdi Sanati
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Tehran University of Medical Science, Tehran, Iran
| | - Seyede Nargess Sadati Lamardi
- Department of Traditional Pharmacy, School of Traditional persian Medicine, Tehran University of Medical Science, Tehran, Iran
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11
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Bucladesine Attenuates Spatial Learning and Hippocampal Mitochondrial Impairments Induced by 3, 4-Methylenedioxymethamphetamine (MDMA). Neurotox Res 2020; 38:38-49. [PMID: 32103463 DOI: 10.1007/s12640-020-00183-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2019] [Revised: 02/07/2020] [Accepted: 02/14/2020] [Indexed: 12/14/2022]
Abstract
Neurotoxic effects of systemic administration of 3, 4- methylenedioxymethamphetamine (MDMA) has been attributed to MDMA and its metabolites. However, the role of the parent compound in MDMA-induced mitochondrial and memory impairment has not yet been investigated. Moreover, it is not yet studied that analogs of 3', 5'-cyclic adenosine monophosphate (cAMP) could decrease these neurotoxic effects of MDMA. We wished to investigate the effects of the central administration of MDMA on spatial memory and mitochondrial function as well as the effects of bucladesine, a membrane-permeable analog of cAMP, on these effects of MDMA. We assessed the effects of pre-training bilateral intrahippocampal infusion of MDMA (0.01, 0.1, 0.5, and 1 μg/side), bucladesine (10 and 100 μM) or combination of them on spatial memory, and different parameters of hippocampal mitochondrial function including the level of reactive oxygen species (ROS) production, mitochondrial membrane potential (MMP), mitochondrial swelling, mitochondrial outer membrane damage, the amount of cytochrome c release as well as hippocampal ADP/ATP ratio. The results showed that MDMA caused spatial memory impairments as well as mitochondrial dysfunction as evidenced by the marked increase in hippocampal ADP/ATP ratio, ROS level, the collapse of MMP, mitochondrial swelling, and mitochondrial outer membrane damage leading to cytochrome c release from the mitochondria. The current study also found that bucladesine markedly reduced the destructive effects of MDMA. These results provide evidence of the role of the parent compound (MDMA) in MDMA-induced memory impairments through mitochondrial dysfunction. This study highlights the role of cAMP/PKA signaling in MDMA-induced memory and mitochondrial defects.
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12
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Dose concentration and spatial memory and brain mitochondrial function association after 3,4-methylenedioxymethamphetamine (MDMA) administration in rats. Arch Toxicol 2020; 94:911-925. [DOI: 10.1007/s00204-020-02673-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2019] [Accepted: 02/11/2020] [Indexed: 01/03/2023]
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13
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Gupta P, Sil S, Ghosh R, Ghosh A, Ghosh T. Intracerebroventricular Aβ-Induced Neuroinflammation Alters Peripheral Immune Responses in Rats. J Mol Neurosci 2018; 66:572-586. [DOI: 10.1007/s12031-018-1189-9] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2018] [Accepted: 09/25/2018] [Indexed: 10/28/2022]
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14
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Athari Nik Azm S, Djazayeri A, Safa M, Azami K, Ahmadvand B, Sabbaghziarani F, Sharifzadeh M, Vafa M. Lactobacilli and bifidobacteria ameliorate memory and learning deficits and oxidative stress in β-amyloid (1–42) injected rats. Appl Physiol Nutr Metab 2018; 43:718-726. [DOI: 10.1139/apnm-2017-0648] [Citation(s) in RCA: 127] [Impact Index Per Article: 21.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
The gastrointestinal microbiota affects brain function, including memory and learning. In this study we investigated the effects of probiotics on memory and oxidative stress biomarkers in an experimental model of Alzheimer’s disease. Sixty rats were randomly divided into 5 groups: control; control-probiotics, which received probiotics for 8 weeks; sham operation, which received an intrahippocampal injection of phosphate-buffered saline; Alzheimer, which received an intrahippocampal injection of β-amyloid (Aβ1–42); and Alzheimer-probiotics, which in addition to being injected with Aβ1–42, received 2 g (1 × 1010 CFU/g) of probiotics (Lactobacillus acidophilus, L. fermentum, Bifidobacterium lactis, and B. longum) for 8 weeks. Memory and learning were measured using the Morris water maze, and oxidative stress biomarkers in the hippocampus were measured using ELISA kits. Morris water maze results indicated that compared with the Alzheimer group, the Alzheimer-probiotics group had significantly improved spatial memory, including shorter escape latency and travelled distance and greater time spent in the target quadrant. There was also improvement in oxidative stress biomarkers such as increased malondialdehyde levels and superoxide dismutase activity following the β-amyloid injection. Overall, it seems that probiotics play a role in improving memory deficit and inhibiting the pathological mechanisms of Alzheimer’s disease by modifying microbiota.
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Affiliation(s)
- Somayeh Athari Nik Azm
- Department of Community Nutrition, School of Nutritional Sciences and Dietetics, Tehran University of Medical Sciences, Tehran, Iran
| | - Abolghassem Djazayeri
- Department of Community Nutrition, School of Nutritional Sciences and Dietetics, Tehran University of Medical Sciences, Tehran, Iran
| | - Majid Safa
- Cellular and Molecular Research Centre and Hematology Department, School of Allied Medical Science, Iran University of Medical Sciences, Tehran, Iran
| | - Kian Azami
- Pharmaceutical Science Research Center, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran
| | - Behzad Ahmadvand
- Faculty of Veterinary Medicine, Islamic Azad University, Garmsar Branch, Garmsar, Iran
| | - Fatemeh Sabbaghziarani
- Department of Anatomy, School of Medicine, Qazvin University of Medical Sciences, Qazvin, Iran
| | - Mohammad Sharifzadeh
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran
| | - Mohammadreza Vafa
- Department of Nutrition, School of Public Health, Iran University of Medical Sciences, Tehran, Iran
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15
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A cAMP analog attenuates beta-amyloid (1-42)-induced mitochondrial dysfunction and spatial learning and memory deficits. Brain Res Bull 2018; 140:34-42. [PMID: 29605485 DOI: 10.1016/j.brainresbull.2018.03.016] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2017] [Revised: 03/24/2018] [Accepted: 03/26/2018] [Indexed: 11/21/2022]
Abstract
Alzheimer's disease (AD), a neurodegenerative disorder in elderly, is indicated with deposition of Amyloid β (Aβ) in the brain and accompanied with cognitive impairment. Bucladesine, a phosphodiesterase inhibitor, may ameliorate AD's cognitive dysfunctions through mimicking the action of cAMP and raising its intracellular level. Here, we investigated the effects of bucladesine on Aβ-induced memory and learning impairment in a Morris water maze (MWM) model. Rats were injected with bucladesine (1 μl/side from a 100 μM stock solution) and Aβ (1 μl/side from a 100 μM stock solution) intra-hippocampally and after 19 days were trained for 4 successive days. The oxidative stress was evaluated through measurement of thiobarbituric acid (TBARS), thiol groups, and ferric reducing antioxidant power (FRAP). Effect of Aβ and its combination with bucladesine on the mitochondrial function was assessed according to changes in the ROS generation, mitochondrial membrane potential (MMP), mitochondrial swelling, ATP/ADP ratio, mitochondrial outer membrane damage and cytochrome C release. Our results showed a significant elevation in TBARS level after administration of Aβ causing mitochondrial ROS generation, swelling, outer membrane damage, cytochrome C release and also lower thiol, FRAP, and MMP levels. Aβ-induced spatial memory impairment was prevented by pre-treatment with bucladesine and the changed mitochondrial and biochemical indices upon treatment dose were improved. Taken together, we have obtained satisfactory results suggesting protecting effects of bucladesine against the Aβ-mediated memory deficit and implying its plausible beneficial capacity as a therapeutic agent in oxidative stress-associated neurodegenerative diseases.
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16
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Shim MS, Kim KY, Bu JH, Nam HS, Jeong SW, Park TL, Ellisman MH, Weinreb RN, Ju WK. Elevated intracellular cAMP exacerbates vulnerability to oxidative stress in optic nerve head astrocytes. Cell Death Dis 2018; 9:285. [PMID: 29459737 PMCID: PMC5833440 DOI: 10.1038/s41419-017-0171-8] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2017] [Revised: 11/08/2017] [Accepted: 11/14/2017] [Indexed: 12/25/2022]
Abstract
Glaucoma is characterized by a progressive loss of retinal ganglion cells and their axons, but the underlying biological basis for the accompanying neurodegeneration is not known. Accumulating evidence indicates that structural and functional abnormalities of astrocytes within the optic nerve head (ONH) have a role. However, whether the activation of cyclic adenosine 3',5'-monophosphate (cAMP) signaling pathway is associated with astrocyte dysfunction in the ONH remains unknown. We report here that the cAMP/protein kinase A (PKA) pathway is critical to ONH astrocyte dysfunction, leading to caspase-3 activation and cell death via the AKT/Bim/Bax signaling pathway. Furthermore, elevated intracellular cAMP exacerbates vulnerability to oxidative stress in ONH astrocytes, and this may contribute to axonal damage in glaucomatous neurodegeneration. Inhibition of intracellular cAMP/PKA signaling activation protects ONH astrocytes by increasing AKT phosphorylation against oxidative stress. These results strongly indicate that activation of cAMP/PKA pathway has an important role in astrocyte dysfunction, and suggest that modulating cAMP/PKA pathway has therapeutic potential for glaucomatous ONH degeneration.
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Affiliation(s)
- Myoung Sup Shim
- Hamilton Glaucoma Center and Department of Ophthalmology, Shiley Eye Institute, University of California San Diego, La Jolla, CA, USA
| | - Keun-Young Kim
- Center for Research on Biological Systems, National Center for Microscopy and Imaging Research and Department of Neuroscience, University of California San Diego, La Jolla, CA, USA
| | - Jung Hyun Bu
- Hamilton Glaucoma Center and Department of Ophthalmology, Shiley Eye Institute, University of California San Diego, La Jolla, CA, USA
| | - Hye Seung Nam
- Hamilton Glaucoma Center and Department of Ophthalmology, Shiley Eye Institute, University of California San Diego, La Jolla, CA, USA
| | - Seung Won Jeong
- Hamilton Glaucoma Center and Department of Ophthalmology, Shiley Eye Institute, University of California San Diego, La Jolla, CA, USA
| | - Tae Lim Park
- Hamilton Glaucoma Center and Department of Ophthalmology, Shiley Eye Institute, University of California San Diego, La Jolla, CA, USA
| | - Mark H Ellisman
- Center for Research on Biological Systems, National Center for Microscopy and Imaging Research and Department of Neuroscience, University of California San Diego, La Jolla, CA, USA
| | - Robert N Weinreb
- Hamilton Glaucoma Center and Department of Ophthalmology, Shiley Eye Institute, University of California San Diego, La Jolla, CA, USA
| | - Won-Kyu Ju
- Hamilton Glaucoma Center and Department of Ophthalmology, Shiley Eye Institute, University of California San Diego, La Jolla, CA, USA.
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17
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Kelly MP. Cyclic nucleotide signaling changes associated with normal aging and age-related diseases of the brain. Cell Signal 2018; 42:281-291. [PMID: 29175000 PMCID: PMC5732030 DOI: 10.1016/j.cellsig.2017.11.004] [Citation(s) in RCA: 95] [Impact Index Per Article: 15.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2017] [Accepted: 11/21/2017] [Indexed: 01/23/2023]
Abstract
Deficits in brain function that are associated with aging and age-related diseases benefit very little from currently available therapies, suggesting a better understanding of the underlying molecular mechanisms is needed to develop improved drugs. Here, we review the literature to test the hypothesis that a break down in cyclic nucleotide signaling at the level of synthesis, execution, and/or degradation may contribute to these deficits. A number of findings have been reported in both the human and animal model literature that point to brain region-specific changes in Galphas (a.k.a. Gαs or Gsα), adenylyl cyclase, 3',5'-adenosine monophosphate (cAMP) levels, protein kinase A (PKA), cAMP response element binding protein (CREB), exchange protein activated by cAMP (Epac), hyperpolarization-activated cyclic nucleotide-gated ion channels (HCNs), atrial natriuretic peptide (ANP), brain natriuretic peptide (BNP), soluble and particulate guanylyl cyclase, 3',5'-guanosine monophosphate (cGMP), protein kinase G (PKG) and phosphodiesterases (PDEs). Among the most reproducible findings are 1) elevated circulating ANP and BNP levels being associated with cognitive dysfunction or dementia independent of cardiovascular effects, 2) reduced basal and/or NMDA-stimulated cGMP levels in brain with aging or Alzheimer's disease (AD), 3) reduced adenylyl cyclase activity in hippocampus and specific cortical regions with aging or AD, 4) reduced expression/activity of PKA in temporal cortex and hippocampus with AD, 5) reduced phosphorylation of CREB in hippocampus with aging or AD, 6) reduced expression/activity of the PDE4 family in brain with aging, 7) reduced expression of PDE10A in the striatum with Huntington's disease (HD) or Parkinson's disease, and 8) beneficial effects of select PDE inhibitors, particularly PDE10 inhibitors in HD models and PDE4 and PDE5 inhibitors in aging and AD models. Although these findings generally point to a reduction in cyclic nucleotide signaling being associated with aging and age-related diseases, there are exceptions. In particular, there is evidence for increased cAMP signaling specifically in aged prefrontal cortex, AD cerebral vessels, and PD hippocampus. Thus, if cyclic nucleotide signaling is going to be targeted effectively for therapeutic gain, it will have to be manipulated in a brain region-specific manner.
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Affiliation(s)
- Michy P Kelly
- Department of Pharmacology, Physiology & Neuroscience, University of South Carolina School of Medicine, 6439 Garners Ferry Road, VA Bldg 1, 3rd Floor, D-12, Columbia, SC 29209, United States.
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18
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Athari Nik Azm S, Djazayeri A, Safa M, Azami K, Djalali M, Sharifzadeh M, Vafa M. Probiotics improve insulin resistance status in an experimental model of Alzheimer's disease. Med J Islam Repub Iran 2017; 31:103. [PMID: 29951404 PMCID: PMC6014785 DOI: 10.14196/mjiri.31.103] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2017] [Accepted: 12/18/2017] [Indexed: 12/22/2022] Open
Abstract
Background: Nowadays, Alzheimer's disease (AD) is considered as Type 3 diabetes in which insulin resistance is the common cause of both diseases. Disruption of insulin signaling cascade and insulin resistance can induce AD; and central insulin resistance causes systemic alterations in serum insulin, FBS levels, and lipid profile. Studies have shown that probiotics (Lactobacillus and Bifidobacterium species) can be used as a nutritional approach to improve these metabolic changes. We assessed the probiotic effect (4 species of Lactobacillus and Bifidobacterium) on insulin resistance biomarkers in an experimental model of AD. Methods: A total of 60 rats were divided into 5 groups: (1) a control group without surgical and dietary intervention; (2) a controlprobiotics group receiving probiotics for 8 weeks, but not receiving any surgical intervention; (3) a group receiving a sham operation in which PBS was injected intrahippocampus but without dietary intervention; (4) an Alzheimer group for which Amyloid-ß (Aß) 1- 42 was injected intrahippocampus but without dietary intervention; (5) and an Alzheimer-probiotics group for which Aß1-42 was injected intrahippocampus and given 2g probiotics for 8 weeks. The FBS levels and lipid profile were measured by a calorimetric method, insulin levels were detected by an ELISA kit, and HOMA-IR was calculated using a formula. ANOVA (one way analysis of variance followed by Bonferroni comparisons post hoc) was used to compare all the variables between groups. Results: Serum glucose, insulin levels, and HOMA-IR index increased in the Alzheimer group compared to the control (p<0.001), while probiotics decreased only insulin level and HOMA-IR index in AP group compared to Alzheimer group (p<0.001). Also, TG levels increased in the Alzheimer group (p<0.001), but no significant difference was detected between Alzheimer and Alzheimerprobiotics group. Conclusion: It seems that probiotics play an effective role in controlling glycemic status of Alzheimer's disease.
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Affiliation(s)
- Somayeh Athari Nik Azm
- Department of Community Nutrition, School of Nutritional Science and Dietetics, Tehran University of Medical Sciences, Tehran, Iran
| | - Abolghassem Djazayeri
- Department of Community Nutrition, School of Nutritional Science and Dietetics, Tehran University of Medical Sciences, Tehran, Iran
| | - Majid Safa
- Cellular and Molecular Research Center and Hematology Department, School of Allied Medical Science, Iran University of Medical Sciences, Tehran, Iran
| | - Kian Azami
- Department of Pharmacology, Pharmaceutical Science Research Center, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran
| | - Mahmoud Djalali
- Department of Cellular-Molecular Nutrition, School of Nutritional Science and Dietetics, Tehran University of Medical Sciences, Tehran, Iran
| | - Mohammad Sharifzadeh
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran
| | - Mohammadreza Vafa
- Department of Nutrition, School of Public Health, Iran University of Medical Sciences, Tehran, Iran
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19
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Mehdizadeh H, Pourahmad J, Taghizadeh G, Vousooghi N, Yoonessi A, Naserzadeh P, Behzadfar L, Rouini MR, Sharifzadeh M. Mitochondrial impairments contribute to spatial learning and memory dysfunction induced by chronic tramadol administration in rat: Protective effect of physical exercise. Prog Neuropsychopharmacol Biol Psychiatry 2017; 79:426-433. [PMID: 28757160 DOI: 10.1016/j.pnpbp.2017.07.022] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/08/2017] [Revised: 07/06/2017] [Accepted: 07/26/2017] [Indexed: 01/15/2023]
Abstract
Despite the worldwide use of tramadol, few studies have been conducted about its effects on memory and mitochondrial function, and controversial results have been reported. Recently, there has been an increasing interest in physical exercise as a protective approach to neuronal and cognitive impairments. Therefore, the aim of this study was to investigate the effects of physical exercise on spatial learning and memory and brain mitochondrial function in tramadol-treated rats. After completion of 2-week (short-term) and 4-week (long-term) treadmill exercise regimens, male Wistar rats received tramadol (20, 40, 80mg/kg/day) intraperitoneally for 30days. Then spatial learning and memory was assessed by Morris water maze test (MWM). Moreover, brain mitochondrial function was evaluated by determination of mitochondrial reactive oxygen species (ROS) level, mitochondrial membrane potential (MMP), mitochondrial swelling and cytochrome c release from mitochondria. Chronic administration of tramadol impaired spatial learning and memory as well as brain mitochondrial function as indicated by increased ROS level, MMP collapse, increased mitochondrial swelling and cytochrome c release from mitochondria. Conversely, treadmill exercise significantly attenuated the impairments of spatial learning and memory and brain mitochondrial dysfunction induced by tramadol. The results revealed that chronic tramadol treatment caused memory impairments through induction of brain mitochondrial dysfunction. Furthermore, pre-exposure to physical exercise markedly mitigated these impairments through its positive effects on brain mitochondrial function.
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Affiliation(s)
- Hajar Mehdizadeh
- Department of Neuroscience, School of Advanced Technologies in Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Jalal Pourahmad
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Ghorban Taghizadeh
- Department of Occupational Therapy, Faculty of Rehabilitation, Iran University of Medical Sciences, Tehran, Iran; Rehabilitation Research Center, Faculty of Rehabilitation, Iran University of Medical Sciences, Tehran, Iran
| | - Nasim Vousooghi
- Department of Neuroscience, School of Advanced Technologies in Medicine, Tehran University of Medical Sciences, Tehran, Iran; Genetics Laboratory, Iranian National Center for Addiction Studies (INCAS), Tehran University of Medical Sciences, Tehran, Iran; Research Center for Cognitive and Behavioral Sciences, Tehran University of Medical Sciences, Tehran, Iran
| | - Ali Yoonessi
- Department of Neuroscience, School of Advanced Technologies in Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Parvaneh Naserzadeh
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Ladan Behzadfar
- Department of Pharmacology and Toxicology, Pharmaceutical Sciences Research Center, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran
| | - Mohammad Reza Rouini
- Department of Pharmaceutics, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran
| | - Mohammad Sharifzadeh
- Department of Neuroscience, School of Advanced Technologies in Medicine, Tehran University of Medical Sciences, Tehran, Iran; Department of Pharmacology and Toxicology, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran.
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20
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Gozal E, Metz CJ, Dematteis M, Sachleben LR, Schurr A, Rane MJ. PKA activity exacerbates hypoxia-induced ROS formation and hypoxic injury in PC-12 cells. Toxicol Lett 2017; 279:107-114. [PMID: 28751209 PMCID: PMC5608019 DOI: 10.1016/j.toxlet.2017.07.895] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2017] [Accepted: 07/22/2017] [Indexed: 10/19/2022]
Abstract
Hypoxia is a primary factor in many pathological conditions. Hypoxic cell death is commonly attributed to metabolic failure and oxidative injury. cAMP-dependent protein kinase A (PKA) is activated in hypoxia and regulates multiple enzymes of the mitochondrial electron transport chain, thus may be implicated in cellular energy depletion and hypoxia-induced cell death. Wild type (WT) PC-12 cells and PKA activity-deficient 123.7 PC-12 cells were exposed to 3, 6, 12 and 24h hypoxia (0.1% or 5% O2). Hypoxia, at 24h 0.1% O2, induced cell death and increased reactive oxygen species (ROS) in WT PC-12 cells. Despite lower ATP levels in normoxic 123.7 cells than in WT cells, hypoxia only decreased ATP levels in WT cells. However, menadione-induced oxidative stress similarly affected both cell types. While mitochondrial COX IV expression remained consistently higher in 123.7 cells, hypoxia decreased COX IV expression in both cell types. N-acetyl cysteine antioxidant treatment blocked hypoxia-induced WT cell death without preventing ATP depletion. Transient PKA catα expression in 123.7 cells partially restored hypoxia-induced ROS but did not alter ATP levels or COX IV expression. We conclude that PKA signaling contributes to hypoxic injury, by regulating oxidative stress rather than by depleting ATP levels. Therapeutic strategies targeting PKA signaling may improve cellular adaptation and recovery in hypoxic pathologies.
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Affiliation(s)
- Evelyne Gozal
- Department of Pediatrics PRI, University of Louisville, School of Medicine, Louisville, KY, USA; Department of Physiology, University of Louisville, School of Medicine, Louisville, KY, USA; Department of Pharmacology & Toxicology, University of Louisville, School of Medicine, Louisville, KY, USA.
| | - Cynthia J Metz
- Department of Pediatrics PRI, University of Louisville, School of Medicine, Louisville, KY, USA; Department of Physiology, University of Louisville, School of Medicine, Louisville, KY, USA
| | - Maurice Dematteis
- University Hospital, Department of Addiction Medicine, Grenoble F-38043, France; Grenoble Alpes University, Faculty of Medicine, Grenoble, F-38042, France
| | - Leroy R Sachleben
- Department of Pediatrics PRI, University of Louisville, School of Medicine, Louisville, KY, USA
| | - Avital Schurr
- Department of Anesthesiology & Perioperative Medicine, University of Louisville, School of Medicine, Louisville, KY, USA
| | - Madhavi J Rane
- Department of Medicine/Nephrology, University of Louisville, School of Medicine, Louisville, KY, USA
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21
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Borhani M, Sharifzadeh M, Farzaei MH, Narimani Z, Sabbaghziarani F, Gholami M, Rahimi R. PROTECTIVE EFFECT OF IRIS GERMANICA L. IN Β-AMYLOID-INDUCED ANIMAL MODEL OF ALZHEIMER'S DISEASE. AFRICAN JOURNAL OF TRADITIONAL, COMPLEMENTARY, AND ALTERNATIVE MEDICINES 2017. [PMID: 28638877 PMCID: PMC5471461 DOI: 10.21010/ajtcam.v14i4.17] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
BACKGROUND Alzheimer's disease (AD) is the most common cause of dementia that is an irretrievable chronic neurodegenerative disease. In the current study, we have examined the therapeutic effects of Iris germanica extract on Amyloid β (Aβ) induced memory impairment. MATERIALS AND METHODS Wistar rats were divided into five groups of 8 per each. Groups were as followed: control group which were normal rats without induction of AD, Aβ group which received Aβ (50 ng/side), iris 100 group which received Aβ + Iris (100 mg/kg), iris 200 group which received Aβ + Iris (200 mg/kg), and iris 400 group which received Aβ + Iris (400 mg/kg). AD was established by intrahippocampal injection of 50 ng/μl/side Aβ1-42. The day after surgery, animals in treatment groups received different doses of the aqueous extract of Iris by gavage for 30 days. Morris water maze test (MWM) was performed to assess the effects of I. germanica on learning and memory of rats with Aβ induced AD. RESULTS Data from MWM tests, including escape latency and traveled distance, demonstrated that I. germanica extract could markedly improve spatial memory in comparison to control. Moreover, the plant had a significantly better effect on the performance of AD rats in the probe test. CONCLUSION I. germanica extract can successfully reverse spatial learning dysfunction in an experimental model of AD. Further neuro psyco-pharmacological studies are mandatory to reveal the mechanism of action of this natural remedy in the management of AD symptoms.
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Affiliation(s)
- Mona Borhani
- Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran
| | - Mohammad Sharifzadeh
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran
| | - Mohammad Hosein Farzaei
- Pharmaceutical Sciences Research Center, Kermanshah University of Medical Sciences, Kermanshah, Iran.,Medical Biology Research Center, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Zahra Narimani
- Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran
| | - Fatemeh Sabbaghziarani
- Department of Anatomy, School of Medicine, Ghazvin University of Medical Sciences, Ghazvin, Iran
| | - Mahdi Gholami
- Faculty of Pharmacy and Pharmaceutical Sciences Research Center, Tehran University of Medical Sciences, Tehran, Iran
| | - Roja Rahimi
- Department of Traditional Pharmacy, School of Traditional Medicine, Tehran University of Medical Sciences, Tehran, Iran.,PhytoPharmacology Interest Group (PPIG), Universal Scientific Education and Research Network (USERN), Tehran, Iran
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22
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Bussiere R, Lacampagne A, Reiken S, Liu X, Scheuerman V, Zalk R, Martin C, Checler F, Marks AR, Chami M. Amyloid β production is regulated by β2-adrenergic signaling-mediated post-translational modifications of the ryanodine receptor. J Biol Chem 2017; 292:10153-10168. [PMID: 28476886 PMCID: PMC5473221 DOI: 10.1074/jbc.m116.743070] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2016] [Revised: 05/02/2017] [Indexed: 11/06/2022] Open
Abstract
Alteration of ryanodine receptor (RyR)-mediated calcium (Ca2+) signaling has been reported in Alzheimer disease (AD) models. However, the molecular mechanisms underlying altered RyR-mediated intracellular Ca2+ release in AD remain to be fully elucidated. We report here that RyR2 undergoes post-translational modifications (phosphorylation, oxidation, and nitrosylation) in SH-SY5Y neuroblastoma cells expressing the β-amyloid precursor protein (βAPP) harboring the familial double Swedish mutations (APPswe). RyR2 macromolecular complex remodeling, characterized by depletion of the regulatory protein calstabin2, resulted in increased cytosolic Ca2+ levels and mitochondrial oxidative stress. We also report a functional interplay between amyloid β (Aβ), β-adrenergic signaling, and altered Ca2+ signaling via leaky RyR2 channels. Thus, post-translational modifications of RyR occur downstream of Aβ through a β2-adrenergic signaling cascade that activates PKA. RyR2 remodeling in turn enhances βAPP processing. Importantly, pharmacological stabilization of the binding of calstabin2 to RyR2 channels, which prevents Ca2+ leakage, or blocking the β2-adrenergic signaling cascade reduced βAPP processing and the production of Aβ in APPswe-expressing SH-SY5Y cells. We conclude that targeting RyR-mediated Ca2+ leakage may be a therapeutic approach to treat AD.
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Affiliation(s)
- Renaud Bussiere
- From the Université Côte d'Azur, CNRS, IPMC, France, "Labex Distalz," 660 route des Lucioles, 06560 Sophia-Antipolis, Valbonne, France
| | - Alain Lacampagne
- INSERM U1046, CNRS UMR9214, CNRS LIA1185, Université de Montpellier, CHRU Montpellier, 34295 Montpellier, France, and
| | - Steven Reiken
- Department of Physiology and Cellular Biophysics, Clyde and Helen Wu Center for Molecular Cardiology, Columbia University College of Physicians and Surgeons, New York, New York 10032
| | - Xiaoping Liu
- Department of Physiology and Cellular Biophysics, Clyde and Helen Wu Center for Molecular Cardiology, Columbia University College of Physicians and Surgeons, New York, New York 10032
| | - Valerie Scheuerman
- INSERM U1046, CNRS UMR9214, CNRS LIA1185, Université de Montpellier, CHRU Montpellier, 34295 Montpellier, France, and
| | - Ran Zalk
- Department of Physiology and Cellular Biophysics, Clyde and Helen Wu Center for Molecular Cardiology, Columbia University College of Physicians and Surgeons, New York, New York 10032
| | - Cécile Martin
- From the Université Côte d'Azur, CNRS, IPMC, France, "Labex Distalz," 660 route des Lucioles, 06560 Sophia-Antipolis, Valbonne, France
| | - Frederic Checler
- From the Université Côte d'Azur, CNRS, IPMC, France, "Labex Distalz," 660 route des Lucioles, 06560 Sophia-Antipolis, Valbonne, France
| | - Andrew R Marks
- Department of Physiology and Cellular Biophysics, Clyde and Helen Wu Center for Molecular Cardiology, Columbia University College of Physicians and Surgeons, New York, New York 10032
| | - Mounia Chami
- From the Université Côte d'Azur, CNRS, IPMC, France, "Labex Distalz," 660 route des Lucioles, 06560 Sophia-Antipolis, Valbonne, France,
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23
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Azimi L, Kachooeian M, Khodagholi F, Yans A, Heysieattalab S, Vakilzadeh G, Vosoughi N, Sanati M, Taghizadeh G, Sharifzadeh M. Protective effects of salicylate on PKA inhibitor (H-89)-induced spatial memory deficit via lessening autophagy and apoptosis in rats. Pharmacol Biochem Behav 2016; 150-151:158-169. [DOI: 10.1016/j.pbb.2016.10.008] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/26/2016] [Revised: 10/23/2016] [Accepted: 10/25/2016] [Indexed: 01/29/2023]
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24
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Taghizadeh G, Pourahmad J, Mehdizadeh H, Foroumadi A, Torkaman-Boutorabi A, Hassani S, Naserzadeh P, Shariatmadari R, Gholami M, Rouini MR, Sharifzadeh M. Protective effects of physical exercise on MDMA-induced cognitive and mitochondrial impairment. Free Radic Biol Med 2016; 99:11-19. [PMID: 27451936 DOI: 10.1016/j.freeradbiomed.2016.07.018] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/25/2016] [Revised: 07/13/2016] [Accepted: 07/20/2016] [Indexed: 11/28/2022]
Abstract
Debate continues about the effect of 3, 4-methylenedioxymethamphetamine (MDMA) on cognitive and mitochondrial function through the CNS. It has been shown that physical exercise has an important protective effect on cellular damage and death. Therefore, we investigated the effect of physical exercise on MDMA-induced impairments of spatial learning and memory as well as MDMA effects on brain mitochondrial function in rats. Male wistar rats underwent short-term (2 weeks) or long-term (4 weeks) treadmill exercise. After completion of exercise duration, acquisition and retention of spatial memory were evaluated by Morris water maze (MWM) test. Rats were intraperitoneally (I.P) injected with MDMA (5, 10, and 15mg/kg) 30min before the first training trial in 4 training days of MWM. Different parameters of brain mitochondrial function were measured including the level of ROS production, mitochondrial membrane potential (MMP), mitochondrial swelling, mitochondrial outermembrane damage, the amount of cytochrome c release from the mitochondria, and ADP/ATP ratio. MDMA damaged the spatial learning and memory in a dose-dependent manner. Brain mitochondria isolated from the rats treated with MDMA showed significant increase in ROS formation, collapse of MMP, mitochondrial swelling, and outer membrane damage, cytochrome c release from the mitochondria, and finally increased ADP/ATP ratio. This study also found that physical exercise significantly decreased the MDMA-induced impairments of spatial learning and memory and also mitochondrial dysfunction. The results indicated that MDMA-induced neurotoxicity leads to brain mitochondrial dysfunction and subsequent oxidative stress is followed by cognitive impairments. However, physical exercise could reduce these deleterious effects of MDMA through protective effects on brain mitochondrial function.
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Affiliation(s)
- Ghorban Taghizadeh
- Department of Neuroscience, School of Advanced Science and Technologies in Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Jalal Pourahmad
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Hajar Mehdizadeh
- Department of Neuroscience, School of Advanced Science and Technologies in Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Alireza Foroumadi
- Faculty of Pharmacy and Pharmaceutical Sciences Research Center, Tehran University of Medical Sciences, Tehran, Iran
| | - Anahita Torkaman-Boutorabi
- Department of Neuroscience, School of Advanced Science and Technologies in Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Shokoufeh Hassani
- Faculty of Pharmacy and Pharmaceutical Sciences Research Center, Tehran University of Medical Sciences, Tehran, Iran
| | - Parvaneh Naserzadeh
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Reyhaneh Shariatmadari
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran
| | - Mahdi Gholami
- Faculty of Pharmacy and Pharmaceutical Sciences Research Center, Tehran University of Medical Sciences, Tehran, Iran
| | - Mohammad Reza Rouini
- Department of Pharmaceutics, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran
| | - Mohammad Sharifzadeh
- Department of Neuroscience, School of Advanced Science and Technologies in Medicine, Tehran University of Medical Sciences, Tehran, Iran; Department of Pharmacology and Toxicology, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran.
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25
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How sodium arsenite improve amyloid β-induced memory deficit? Physiol Behav 2016; 163:97-106. [DOI: 10.1016/j.physbeh.2016.04.046] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2015] [Revised: 02/29/2016] [Accepted: 04/24/2016] [Indexed: 11/20/2022]
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26
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Wang J, Zhao J, Liu Z, Guo F, Wang Y, Wang X, Zhang R, Vreugdenhil M, Lu C. Acute Ethanol Inhibition of γ Oscillations Is Mediated by Akt and GSK3β. Front Cell Neurosci 2016; 10:189. [PMID: 27582689 PMCID: PMC4987361 DOI: 10.3389/fncel.2016.00189] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2016] [Accepted: 07/19/2016] [Indexed: 01/23/2023] Open
Abstract
Hippocampal network oscillations at gamma band frequency (γ, 30-80 Hz) are closely associated with higher brain functions such as learning and memory. Acute ethanol exposure at intoxicating concentrations (≥50 mM) impairs cognitive function. This study aimed to determine the effects and the mechanisms of acute ethanol exposure on γ oscillations in an in vitro model. Ethanol (25-100 mM) suppressed kainate-induced γ oscillations in CA3 area of the rat hippocampal slices, in a concentration-dependent, reversible manner. The ethanol-induced suppression was reduced by the D1R antagonist SCH23390 or the PKA inhibitor H89, was prevented by the Akt inhibitor triciribine or the GSk3β inhibitor SB415286, was enhanced by the NMDA receptor antagonist D-AP5, but was not affected by the MAPK inhibitor U0126 or PI3K inhibitor wortmanin. Our results indicate that the intracellular kinases Akt and GSk3β play a critical role in the ethanol-induced suppression of γ oscillations and reveal new cellular pathways involved in the ethanol-induced cognitive impairment.
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Affiliation(s)
- JianGang Wang
- Key Laboratory for the Brain Research of Henan Province, Xinxiang Medical UniversityXinxiang, China; Department of Pathophysiology, Xinxiang Medical UniversityXinxiang, China
| | - JingXi Zhao
- Key Laboratory for the Brain Research of Henan Province, Xinxiang Medical UniversityXinxiang, China; Psychiatric Hospital of Henan ProvinceXinxiang, China
| | - ZhiHua Liu
- Key Laboratory for the Brain Research of Henan Province, Xinxiang Medical UniversityXinxiang, China; Psychiatric Hospital of Henan ProvinceXinxiang, China
| | - FangLi Guo
- Key Laboratory for the Brain Research of Henan Province, Xinxiang Medical UniversityXinxiang, China; Department of Neurobiology and Physiology, Xinxiang Medical UniversityXinxiang, China
| | - Yali Wang
- Key Laboratory for the Brain Research of Henan Province, Xinxiang Medical UniversityXinxiang, China; Department of Neurobiology and Physiology, Xinxiang Medical UniversityXinxiang, China
| | - Xiaofang Wang
- Key Laboratory for the Brain Research of Henan Province, Xinxiang Medical University Xinxiang, China
| | - RuiLing Zhang
- Psychiatric Hospital of Henan Province Xinxiang, China
| | - Martin Vreugdenhil
- Department of Psychology, Xinxiang Medical UniversityHenan, China; Department of Health Sciences, Birmingham City UniversityBirmingham, UK
| | - Chengbiao Lu
- Key Laboratory for the Brain Research of Henan Province, Xinxiang Medical UniversityXinxiang, China; Psychiatric Hospital of Henan ProvinceXinxiang, China
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27
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Mohammadi M, Guan J, Khodagholi F, Yans A, Khalaj S, Gholami M, Taghizadeh GH, Aliaghaei A, Abdollahi M, Ghahremani MH, Sharifzadeh M. Reduction of autophagy markers mediated protective effects of JNK inhibitor and bucladesine on memory deficit induced by Aβ in rats. Naunyn Schmiedebergs Arch Pharmacol 2016; 389:501-10. [PMID: 26899864 DOI: 10.1007/s00210-016-1222-x] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2015] [Accepted: 02/10/2016] [Indexed: 12/15/2022]
Abstract
Autophagy, the process of self-degradation of cellular components, has an important role in neurodegenerative diseases, such as Alzheimer's disease. In this study, we investigated the effects of SP600125 as c-Jun N-terminal kinase (JNK) inhibitor and bucladesine as a cyclic adenosine 3',5'-monophosphate (cAMP) analog on spatial memory and expression of autophagic factors in Aβ-injected rats. Male Wistar rats were used. Rats were randomly allocated into five groups as following: amyloid beta (Aβ)-only group, Aβ + SP600125 (30 μg/1 μ/side, n = 7) and/or bucladesine (100 μM/1 μl/side, n = 7), and the normal control (vehicle only) group. The treatments were administered bilaterally to the CA1 sub-region of the hippocampus stereotaxically. Spatial reference memory was performed using Morris Water Maze 21 days later. The expression of authophagy markers (beclin1, Atg7, Atg12, and LC3 II/LC3 I) in the hippocampus was evaluated using western blotting. Compared to the vehicle group, Aβ administration reduced spatial reference learning (P < 0.001) and memory (P < 0.01) and upregulated the expression of beclin1, Atg7, Atg12, and LC3 II/I (P < 0.0001). Compare to Aβ-only group, the administration of SP600125 and/or bucladesine improved spatial reference learning (P < 0.001) and memory (P < 0.01). Compared to the Aβ-only group, the treatment with SP600125 and/or bucladesine also reduced beclin1, Atg7, Atg12, and LC3 II/I (P < 0.0001) which was similar to amount of normal rats. In summary, it seems that the improvement of spatial memory by SP600125 and/or bucladesine in Aβ-injected rats is in relation with normalizing of autophagy to the physiologic level, possibly through neuroprotection and/or neuroplasticity.
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Affiliation(s)
- M Mohammadi
- Department of Pharmacology and Toxicology, Pharmaceutical Sciences Research Centre, Faculty of Pharmacy, Tehran University of Medical Sciences, P.O. Box 14155-6451, Tehran, Iran
| | - J Guan
- Liggins Institute, University of Auckland, 85 Park Road, Grafton, Auckland, New Zealand.,Centre for Brain Research, Faculty of Medicine and Health Sciences, University of Auckland, 85 Park Road, Grafton, Auckland, New Zealand.,Gravida National Centre for Growth and Development, University of Auckland, Auckland, New Zealand
| | - F Khodagholi
- Neuroscience Research Centre, ShahidBeheshti University of Medical Sciences, Tehran, Iran.,Neurobiology Research Centre, ShahidBeheshti University of Medical Sciences, Tehran, Iran
| | - A Yans
- Neuroscience Research Centre, ShahidBeheshti University of Medical Sciences, Tehran, Iran.,Neurobiology Research Centre, ShahidBeheshti University of Medical Sciences, Tehran, Iran
| | - S Khalaj
- Department of Pharmacology and Toxicology, Pharmaceutical Sciences Research Centre, Faculty of Pharmacy, Tehran University of Medical Sciences, P.O. Box 14155-6451, Tehran, Iran
| | - M Gholami
- Department of Pharmacology and Toxicology, Pharmaceutical Sciences Research Centre, Faculty of Pharmacy, Tehran University of Medical Sciences, P.O. Box 14155-6451, Tehran, Iran
| | - G H Taghizadeh
- Department of Pharmacology and Toxicology, Pharmaceutical Sciences Research Centre, Faculty of Pharmacy, Tehran University of Medical Sciences, P.O. Box 14155-6451, Tehran, Iran.,Department of Neuroscience, Faculty of Advanced Science and Technology in Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - A Aliaghaei
- Department of Anatomy and Cell Biology, School of Medicine, ShahidBeheshti University of Medical Sciences, Tehran, Iran
| | - M Abdollahi
- Department of Pharmacology and Toxicology, Pharmaceutical Sciences Research Centre, Faculty of Pharmacy, Tehran University of Medical Sciences, P.O. Box 14155-6451, Tehran, Iran
| | - M H Ghahremani
- Department of Pharmacology and Toxicology, Pharmaceutical Sciences Research Centre, Faculty of Pharmacy, Tehran University of Medical Sciences, P.O. Box 14155-6451, Tehran, Iran
| | - M Sharifzadeh
- Department of Pharmacology and Toxicology, Pharmaceutical Sciences Research Centre, Faculty of Pharmacy, Tehran University of Medical Sciences, P.O. Box 14155-6451, Tehran, Iran. .,Department of Neuroscience, Faculty of Advanced Science and Technology in Medicine, Tehran University of Medical Sciences, Tehran, Iran.
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28
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Paradoxical role of PKA inhibitor on amyloidβ-induced memory deficit. Physiol Behav 2015; 149:76-85. [DOI: 10.1016/j.physbeh.2015.05.029] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2015] [Revised: 05/11/2015] [Accepted: 05/28/2015] [Indexed: 12/21/2022]
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29
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PKA Inhibitor H89 (N-[2-p-bromocinnamylamino-ethyl]-5-isoquinolinesulfonamide) Attenuates Synaptic Dysfunction and Neuronal Cell Death following Ischemic Injury. Neural Plast 2015; 2015:374520. [PMID: 26448879 PMCID: PMC4584069 DOI: 10.1155/2015/374520] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2015] [Revised: 02/27/2015] [Accepted: 03/17/2015] [Indexed: 11/26/2022] Open
Abstract
The cyclic AMP-dependent protein kinase (PKA), which activates prosurvival signaling proteins, has been implicated in the expression of long-term potentiation and hippocampal long-term memory. It has come to light that H89 commonly known as the PKA inhibitor have diverse roles in the nervous system that are unrelated to its role as a PKA inhibitor. We have investigated the role of H89 in ischemic and reperfusion injury. First, we examined the expression of postsynaptic density protein 95 (PSD95), microtubule-associated protein 2 (MAP2), and synaptophysin in mouse brain after middle cerebral artery occlusion injury. Next, we examined the role of H89 pretreatment on the expression of brain-derived neurotrophic factor (BDNF), PSD95, MAP2, and the apoptosis regulators Bcl2 and cleaved caspase-3 in cultured neuroblastoma cells exposed to hypoxia and reperfusion injury. In addition, we investigated the alteration of AKT activation in H89 pretreated neuroblastoma cells under hypoxia and reperfusion injury. The data suggest that H89 may contribute to brain recovery after ischemic stroke by regulating neuronal death and proteins related to synaptic plasticity.
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Yun HM, Jin P, Park KR, Hwang J, Jeong HS, Kim EC, Jung JK, Oh KW, Hwang BY, Han SB, Hong JT. Thiacremonone Potentiates Anti-Oxidant Effects to Improve Memory Dysfunction in an APP/PS1 Transgenic Mice Model. Mol Neurobiol 2015; 53:2409-20. [DOI: 10.1007/s12035-015-9208-0] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2014] [Accepted: 05/03/2015] [Indexed: 01/01/2023]
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31
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Ding H, Wang H, Zhao Y, Sun D, Zhai X. Protective Effects of Baicalin on Aβ₁₋₄₂-Induced Learning and Memory Deficit, Oxidative Stress, and Apoptosis in Rat. Cell Mol Neurobiol 2015; 35:623-32. [PMID: 25596671 DOI: 10.1007/s10571-015-0156-z] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2014] [Accepted: 01/05/2015] [Indexed: 12/11/2022]
Abstract
The accumulation and deposition of β-amyloid peptide (Aβ) in senile plaques and cerebral vasculature is believed to facilitate the progressive neurodegeneration that occurs in the Alzheimer's disease (AD). The present study sought to elucidate possible effects of baicalin, a natural phytochemical, on Aβ toxicity in a rat model of AD. By morris water maze test, Aβ1-42 injection was found to cause learning and memory deficit in rat, which was effectively improved by baicalin treatment. Besides, histological examination showed that baicalin could attenuate the hippocampus injury caused by Aβ. The neurotoxicity mechanism of Aβ is associated with oxidative stress and apoptosis, as revealed by increased malonaldehyde generation and TUNEL-positive cells. Baicalin treatment was able to increase antioxidant capabilities by recovering activities of antioxidant enzymes (superoxide dismutase, catalase, and glutathione peroxidase) and up-regulating their gene expression. Moreover, baicalin effectively prevented Aβ-induced mitochondrial membrane potential decrease, Bax/Bcl-2 ratio increase, cytochrome c release, and caspase-9/-3 activation. In addition, we found that the anti-oxidative effect of baicalin was associated with Nrf2 activation. In conclusion, baicalin effectively improved Aβ-induced learning and memory deficit, hippocampus injury, and neuron apoptosis, making it a promising drug to preventive interventions for AD.
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Affiliation(s)
- Haitao Ding
- Linyi City Yishui Central Hospital, Linyi, 276400, Shandong, China
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32
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Del Prete D, Checler F, Chami M. Ryanodine receptors: physiological function and deregulation in Alzheimer disease. Mol Neurodegener 2014; 9:21. [PMID: 24902695 PMCID: PMC4063224 DOI: 10.1186/1750-1326-9-21] [Citation(s) in RCA: 116] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2014] [Accepted: 05/18/2014] [Indexed: 12/21/2022] Open
Abstract
Perturbed Endoplasmic Reticulum (ER) calcium (Ca2+) homeostasis emerges as a central player in Alzheimer disease (AD). Accordingly, different studies have reported alterations of the expression and the function of Ryanodine Receptors (RyR) in human AD-affected brains, in cells expressing familial AD-linked mutations on the β amyloid precursor protein (βAPP) and presenilins (the catalytic core in γ-secretase complexes cleaving the βAPP, thereby generating amyloid β (Aβ) peptides), as well as in the brain of various transgenic AD mice models. Data converge to suggest that RyR expression and function alteration are associated to AD pathogenesis through the control of: i) βAPP processing and Aβ peptide production, ii) neuronal death; iii) synaptic function; and iv) memory and learning abilities. In this review, we document the network of evidences suggesting that RyR could play a complex dual "compensatory/protective versus pathogenic" role contributing to the setting of histopathological lesions and synaptic deficits that are associated with the disease stages. We also discuss the possible mechanisms underlying RyR expression and function alterations in AD. Finally, we review recent publications showing that drug-targeting blockade of RyR and genetic manipulation of RyR reduces Aβ production, stabilizes synaptic transmission, and prevents learning and memory deficits in various AD mouse models. Chemically-designed RyR "modulators" could therefore be envisioned as new therapeutic compounds able to delay or block the progression of AD.
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Affiliation(s)
| | - Frédéric Checler
- Université de Nice Sophia Antipolis, IPMC, Sophia Antipolis, Nice, F-06560 Valbonne, France.
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Hritcu L, Noumedem JA, Cioanca O, Hancianu M, Kuete V, Mihasan M. Methanolic extract of Piper nigrum fruits improves memory impairment by decreasing brain oxidative stress in amyloid beta(1-42) rat model of Alzheimer's disease. Cell Mol Neurobiol 2014; 34:437-49. [PMID: 24442916 DOI: 10.1007/s10571-014-0028-y] [Citation(s) in RCA: 71] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2013] [Accepted: 01/06/2014] [Indexed: 12/01/2022]
Abstract
The present study analyzed the possible memory-enhancing and antioxidant proprieties of the methanolic extract of Piper nigrum L. fruits (50 and 100 mg/kg, orally, for 21 days) in amyloid beta(1-42) rat model of Alzheimer's disease. The memory-enhancing effects of the plant extract were studied by means of in vivo (Y-maze and radial arm-maze tasks) approaches. Also, the antioxidant activity in the hippocampus was assessed using superoxide dismutase-, catalase-, glutathione peroxidase-specific activities and the total content of reduced glutathione, malondialdehyde, and protein carbonyl levels. The amyloid beta(1-42)-treated rats exhibited the following: decrease of spontaneous alternations percentage within Y-maze task and increase of working memory and reference memory errors within radial arm-maze task. Administration of the plant extract significantly improved memory performance and exhibited antioxidant potential. Our results suggest that the plant extract ameliorates amyloid beta(1-42)-induced spatial memory impairment by attenuation of the oxidative stress in the rat hippocampus.
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Affiliation(s)
- Lucian Hritcu
- Department of Biology, Alexandru Ioan Cuza University, Bd. Carol I, No.11, 700506, Iasi, Romania,
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34
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Seyedi SY, Salehi F, Payandemehr B, Hossein S, Hosseini-Zare MS, Nassireslami E, Yazdi BB, Sharifzadeh M. Dual effect of cAMP agonist on ameliorative function of PKA inhibitor in morphine-dependent mice. Fundam Clin Pharmacol 2013; 28:445-54. [PMID: 24033391 DOI: 10.1111/fcp.12045] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2013] [Revised: 06/24/2013] [Accepted: 07/08/2013] [Indexed: 12/15/2022]
Abstract
The present study shows interactive effects of bucladesine (db-cAMP) as a cyclic adenosine monophosphate (cAMP) agonist and H-89 as a protein kinase A (PKA) inhibitor on naloxone-induced withdrawal signs in morphine-dependent mice. Animals were treated subcutaneously with morphine thrice daily with doses progressively increased from 50 to 125 mg/kg. A last dose of morphine (50 mg/kg) was administered on the 4th day. Several withdrawal signs were precipitated by intraperitoneal (i.p.) administration of naloxone (5 mg/kg). Different doses of bucladesine (50, 100, 200 nm/mouse) and H-89 (0.05, 0.5, 1, 5 mg/kg) were administered (i.p.) 60 min before naloxone injection. In combination groups, bucladesine was injected 15 min before H-89 injection. Single administration of H-89 (0.5, 1, 5 mg/kg) and bucladesine (50, 100 nm/mouse) significantly attenuated prominent behavioral signs of morphine withdrawal. Lower doses of bucladesine (50, 100 nm/mouse) in combination with H-89 (0.05 mg/kg) increased the inhibitory effects of H-89 on withdrawal signs while in high dose (200 nm/mouse) decreased the ameliorative function of H-89 (0.05 mg/kg) in morphine-dependent animals. It is concluded that H-89 and bucladesine could affect morphine withdrawal syndrome via possible interaction with cyclic nucleotide messengering systems, protein kinase A signaling pathways, and modified related neurotransmitters.
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Affiliation(s)
- Seyedeh Y Seyedi
- Department of Pharmacology and Toxicology, Pharmaceutical Sciences Research Center, Faculty of Pharmacy, Tehran University of Medical Sciences, PO Box 14155-6451, Tehran, Iran
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Dual contradictory effect of H-89 on neuronal retraction, death and inflammation in differentiated PC12 cells subjected to oxidative stress. J Mol Neurosci 2013; 51:1030-7. [PMID: 23949609 DOI: 10.1007/s12031-013-0092-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2013] [Accepted: 08/05/2013] [Indexed: 10/26/2022]
Abstract
Interrelation between oxidative stress and neuro-inflammation has been discussed extensively to contribute to neuronal dysfunction in neurodegenerative disorders. In this manner, it seems that there is an intriguing link between protein kinase A (PKA), neuronal apoptosis and inflammation. Rat PC12 pheochromocytoma cell can be induced to differentiate into neuron-like cells possessing elongated neurites by nerve growth factor. In this study, we investigated the effect of H-89, a selective inhibitor of PKA, on the neurite retraction along with evaluation of cell death and inflammatory markers in the differentiated PC12 cells, exposed to H2O2. We found that dose-dependent inhibition of PKA by low and medium concentrations of H-89 (5, 7 and 10 μM) enhanced the parameters of neurite outgrowth and complexity in the cells co-treated with H2O2 as an oxidative stress. Similar concentrations of H-89 significantly inhibited cell death and neurite retraction induced by oxidative stress. Components of TNF-α-NFκB-COX-2 axis, a discussed pathway in neuroinflammation, downregulated dose-dependently by administration of H-89 in H2O2-induced PC12 cells. In this condition, PKA inhibition by the high concentrations of H-89 (15 and 20 μM) led to enhanced cell death and inflammation with decreased neurite outgrowth. These findings indicate that H-89 has a dual contradictory effect on oxidative stress and inflammation that affect neurite outgrowth and complexity in differentiated PC12 cells.
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Najafi S, Payandemehr B, Tabrizian K, Shariatpanahi M, Nassireslami E, Azami K, Mohammadi M, Asadi F, Roghani A, Sharifzadeh M. The role of nitric oxide in the PKA inhibitor induced spatial memory deficits in rat: Involvement of choline acetyltransferase. Eur J Pharmacol 2013; 714:478-85. [DOI: 10.1016/j.ejphar.2013.06.039] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2012] [Revised: 06/17/2013] [Accepted: 06/21/2013] [Indexed: 01/24/2023]
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37
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Cioanca O, Hritcu L, Mihasan M, Hancianu M. Cognitive-enhancing and antioxidant activities of inhaled coriander volatile oil in amyloid β(1–42) rat model of Alzheimer's disease. Physiol Behav 2013; 120:193-202. [DOI: 10.1016/j.physbeh.2013.08.006] [Citation(s) in RCA: 81] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2013] [Revised: 05/10/2013] [Accepted: 08/07/2013] [Indexed: 11/26/2022]
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38
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Dewapriya P, Li YX, Himaya S, Pangestuti R, Kim SK. Neoechinulin A suppresses amyloid-β oligomer-induced microglia activation and thereby protects PC-12 cells from inflammation-mediated toxicity. Neurotoxicology 2013; 35:30-40. [DOI: 10.1016/j.neuro.2012.12.004] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2012] [Revised: 12/08/2012] [Accepted: 12/14/2012] [Indexed: 12/22/2022]
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39
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Song J, Gao T, Ye M, Bi H, Liu G. The photocytotoxicity of different lights on mammalian cells in interior lighting system. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2012; 117:13-8. [DOI: 10.1016/j.jphotobiol.2012.08.007] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/17/2012] [Revised: 06/26/2012] [Accepted: 08/07/2012] [Indexed: 12/01/2022]
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40
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Hernandes MS, Lima LS, Scavone C, Lopes LR, Britto LRG. Eye enucleation activates the transcription nuclear factor kappa-B in the rat superior colliculus. Neurosci Lett 2012; 521:104-8. [PMID: 22634628 DOI: 10.1016/j.neulet.2012.05.051] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2012] [Revised: 05/09/2012] [Accepted: 05/16/2012] [Indexed: 12/26/2022]
Abstract
Ocular enucleation produces significant morphological and physiological changes in central visual areas. However, our knowledge of the molecular events resulting from eye enucleation in visual brain areas remains elusive. We characterized here the transcription nuclear factor kappa-B (NF-κB) activation induced by ocular enucleation in the rat superior colliculus (SC). We also tested the effectiveness of the synthetic glucocorticoid dexamethasone in inhibiting its activation. Electrophoretic mobility shift assays to detect NF-κB indicated that this transcription factor is activated in the SC from 1h to day 15 postlesion. The expression of p65 and p50 proteins in the nuclear extracts was also increased. Dexamethasone treatment was able to significantly inhibit NF-κB activation. These findings suggest that this transcriptional factor is importantly involved in the visual system short-term processes that ensue after retinal lesions in the adult brain.
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Affiliation(s)
- Marina S Hernandes
- Department of Physiology and Biophysics, Institute of Biomedical Sciences, USP, SP, Brazil.
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41
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Khorshidahmad T, Tabrizian K, Vakilzadeh G, Nikbin P, Moradi S, Hosseini-Sharifabad A, Roghani A, Naghdi N, Sharifzadeh M. Interactive effects of a protein kinase AII inhibitor and testosterone on spatial learning in the Morris water maze. Behav Brain Res 2012; 228:432-9. [DOI: 10.1016/j.bbr.2011.12.028] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2011] [Revised: 12/12/2011] [Accepted: 12/16/2011] [Indexed: 01/15/2023]
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42
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Azami K, Tabrizian K, Hosseini R, Seyedabadi M, Shariatpanahi M, Noorbakhsh F, Kebriaeezadeh A, Ostad SN, Sharifzadeh M. Nicotine attenuates spatial learning deficits induced by sodium metavanadate. Neurotoxicology 2011; 33:44-52. [PMID: 22119111 DOI: 10.1016/j.neuro.2011.11.004] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2011] [Revised: 11/03/2011] [Accepted: 11/10/2011] [Indexed: 12/15/2022]
Abstract
Learning can be severely impaired as a consequence of exposure to environmental pollutants. Vanadium (V), a metalloid which is widely distributed in the environment, has been shown to exert toxic effects on a variety of biological systems including the nervous system. However, studies exploring the impact of vanadium on learning are limited. Herein, we investigated the effects of oral administration of sodium metavanadate (SMV) (15, 20 and 25mg/kg/day for 2weeks) on spatial learning using Morris water maze (MWM). Our results showed that pre-training administration of sodium metavanadate impaired learning in Morris water maze. Analyzing the role of cholinergic system in SMV-induced learning deficit, we found that bilateral intra-hippocampal infusion of nicotine (1μg/side) during training could significantly diminish the SMV-induced learning impairment. We next examined the expression of choline acetyltransferase (ChAT) and vesicular acetylcholine transporter (VAChT) as cholinergic markers in CA1 region of hippocampus as well as in medial septal area (MSA). Our molecular analyses showed that vanadium administration decreased ChAT and VAChT protein expression, an effect that was attenuated by nicotine. Altogether, our results confirmed the toxic effects of SMV on spatial acquisition, while also pointing to the neuroprotective effects of nicotine on SMV-induced impairments in learning capabilities. These findings might open a new avenue for the prevention of vanadium adverse effects on spatial learning and memory through activation of cholinergic signaling pathway.
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Affiliation(s)
- Kian Azami
- Department of Pharmacology and Toxicology, Pharmaceutical Sciences Research Center, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran
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