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Cao W, Xiong S, Ji W, Wei H, Ma F, Mao L. Neuroprotection Role of Vitamin C by Upregulating Glutamate Transporter-1 in Auditory Cortex of Noise-Induced Tinnitus Animal Model. ACS Chem Neurosci 2024; 15:1197-1205. [PMID: 38451201 DOI: 10.1021/acschemneuro.3c00765] [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] [Indexed: 03/08/2024] Open
Abstract
Vitamin C (Vc) plays a pivotal role in a series of pathological processes, such as tumors, immune diseases, and neurological disorders. However, its therapeutic potential for tinnitus management remains unclear. In this study, we find that Vc relieves tinnitus in noise-exposed rats. In the 7-day therapy groups, spontaneous firing rate (SFR) increases from 1.17 ± 0.10 Hz to 1.77 ± 0.15 Hz after noise exposure. Vc effectively reduces the elevated SFR to 0.99 ± 0.07 and 0.55 ± 0.05 Hz at different doses. The glutamate level in auditory cortex of noise-exposed rats (3.78 ± 0.42 μM) increases relative to that in the control group (1.34 ± 0.22 μM). High doses of Vc (500 mg/kg/day) effectively reduce the elevated glutamate levels (1.49 ± 0.28 μM). Mechanistic studies show that the expression of glutamate transporter 1 (GLT-1) is impaired following noise exposure and that Vc treatment effectively restores GLT-1 expression in the auditory cortex. Meanwhile, the GLT-1 inhibitor, dl-threo-beta-benzyloxyaspartic acid (dl-TBOA), invalidates the protection role of Vc. Our finding shows that Vc substantially enhances glutamate clearance by upregulating GLT-1 and consequently alleviates noise-induced tinnitus. This study provides valuable insight into a novel biological target for the development of therapeutic interventions that may prevent the onset of tinnitus.
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Affiliation(s)
- Wanxin Cao
- Department of Otolaryngology-Head and Neck Surgery, Peking University Third Hospital, Beijing 100191, China
| | - Shan Xiong
- Department of Otolaryngology-Head and Neck Surgery, Peking University Third Hospital, Beijing 100191, China
| | - Wenliang Ji
- College of Chemistry, Beijing Normal University, Beijing 100875, China
| | - Huan Wei
- College of Chemistry, Beijing Normal University, Beijing 100875, China
| | - Furong Ma
- Department of Otolaryngology-Head and Neck Surgery, Peking University Third Hospital, Beijing 100191, China
| | - Lanqun Mao
- College of Chemistry, Beijing Normal University, Beijing 100875, China
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2
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Sandeep, Subba R, Mondal AC. Does COVID-19 Trigger the Risk for the Development of Parkinson's Disease? Therapeutic Potential of Vitamin C. Mol Neurobiol 2023:10.1007/s12035-023-03756-3. [PMID: 37957424 DOI: 10.1007/s12035-023-03756-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2023] [Accepted: 10/30/2023] [Indexed: 11/15/2023]
Abstract
Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) causes coronavirus disease 2019 (COVID-19), which was proclaimed a pandemic by the World Health Organization (WHO) in March 2020. There is mounting evidence that older patients with multimorbidity are more susceptible to COVID-19 complications than are younger, healthy people. Having neuroinvasive potential, SARS-CoV-2 infection may increase susceptibility toward the development of Parkinson's disease (PD), a progressive neurodegenerative disorder with extensive motor deficits. PD is characterized by the aggregation of α-synuclein in the form of Lewy bodies and the loss of dopaminergic neurons in the dorsal striatum and substantia nigra pars compacta (SNpc) of the nigrostriatal pathway in the brain. Increasing reports suggest that SARS-CoV-2 infection is linked with the worsening of motor and non-motor symptoms with high rates of hospitalization and mortality in PD patients. Common pathological changes in both diseases involve oxidative stress, mitochondrial dysfunction, neuroinflammation, and neurodegeneration. COVID-19 exacerbates the damage ensuing from the dysregulation of those processes, furthering neurological complications, and increasing the severity of PD symptomatology. Phytochemicals have antioxidant, anti-inflammatory, and anti-apoptotic properties. Vitamin C supplementation is found to ameliorate the common pathological changes in both diseases to some extent. This review aims to present the available evidence on the association between COVID-19 and PD, and discusses the therapeutic potential of vitamin C for its better management.
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Affiliation(s)
- Sandeep
- Laboratory of Cellular & Molecular Neurobiology, School of Life Sciences, Jawaharlal Nehru University, New Delhi, 110067, India
| | - Rhea Subba
- Laboratory of Cellular & Molecular Neurobiology, School of Life Sciences, Jawaharlal Nehru University, New Delhi, 110067, India
| | - Amal Chandra Mondal
- Laboratory of Cellular & Molecular Neurobiology, School of Life Sciences, Jawaharlal Nehru University, New Delhi, 110067, India.
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3
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Xu G, Xu S, Gong W, Dong S, Yu H. Low Trend for VZV-Associated Disease Patients to Visit Neurologists. J Multidiscip Healthc 2023; 16:1379-1392. [PMID: 37215749 PMCID: PMC10199679 DOI: 10.2147/jmdh.s412398] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2023] [Accepted: 05/10/2023] [Indexed: 05/24/2023] Open
Abstract
Background Herpes zoster (HZ) is a skin disease that can also cause virus-infectious peripheral neuropathies. Despite this, there is limited information on patient preferences for seeking medical attention for HZ and zoster-associated pain (ZAP). Our study aimed to evaluate how frequently patients with ZAP choose to visit neurologists for their symptoms. Methods This study conducted a retrospective review of electronic health records in three general hospitals from January 2017 to June 2022. Using association rule mining, the study analyzed referral behaviors. Results We identified 33,633 patients with 111,488 outpatient visits over 5.5 years. The study found that the majority of patients (74.77-91.22%) visited dermatologists during their first outpatient visit, while only a small percentage (0.86-1.47%) preferred to consult a neurologist. The proportion of patients referred to a specialist during their medical visit varied significantly between different specialties within the same hospital (p <0.05) and even within the same specialty (p<0.05). There was a weak association (Lift:1.00-1.17) of referral behaviors between dermatology and neurology. Across the three hospitals, the average number of visits to a neurologist for ZAP was 1.42-2.49, with an average electronic health record duration of 11-15 days per patient. After consulting with a neurologist, some patients were referred to other specialists. Conclusion It was observed that patients with HZ and ZAP tended to visit a variety of specialists, with only a small number seeking the assistance of neurologists. However, from the perspective of neuroprotection, it is the duty of neurologists to provide more means.
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Affiliation(s)
- Gang Xu
- Department of Rehabilitation Medicine, Affiliated Tenth People’s Hospital of Tongji University, Shanghai Tenth People’s Hospital, Shanghai, 20072, People’s Republic of China
- Department of Rehabilitation Medicine, Tongji University School of Medicine, Shanghai, 200092, People’s Republic of China
| | - Site Xu
- Division of Information and Statistics, Affiliated Ruijin Hospital of Shanghai Jiaotong University School of Medicine, Shanghai, People’s Republic of China
| | - Weiwei Gong
- Department of Rehabilitation Medicine, Tongji University School of Medicine, Shanghai, 200092, People’s Republic of China
- Department of Rehabilitation Medicine, Shanghai First Rehabilitation Hospital, Shanghai, 200090, People’s Republic of China
| | - Shihong Dong
- Department of Rehabilitation Medicine, Tongji University School of Medicine, Shanghai, 200092, People’s Republic of China
| | - Hecheng Yu
- Department of Rehabilitation Medicine, Affiliated Tenth People’s Hospital of Tongji University, Shanghai Tenth People’s Hospital, Shanghai, 20072, People’s Republic of China
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Ramirez-Cando LJ, Guzmán-Vallejos MS, Aguayo LG, Vera-Erazo FD, Ballaz SJ. Neurocytotoxicity of imidacloprid- and acetamiprid-based comercial insecticides over the differentiation of SH-SY5Y neuroblastoma cells. Heliyon 2023; 9:e15840. [PMID: 37180892 PMCID: PMC10172787 DOI: 10.1016/j.heliyon.2023.e15840] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2022] [Revised: 04/19/2023] [Accepted: 04/24/2023] [Indexed: 05/16/2023] Open
Abstract
Neonicotinoids are effective insecticides with specificity for invertebrate nicotinic acetylcholine receptors. Neonicotinoids are chemically stable and tend to remain in the environment for long so concerns about their neurotoxicity in humans do nothing but increase. Herein, we evaluated the chronic toxic effects of acetamiprid- and imidacloprid-based insecticides over the differentiation of human neuroblastoma SH-SY5Y cells, which were exposed to these insecticides at a concentration range similar to that applied to crop fields (0.01-0.5 mM). Both insecticides did not have acute cytotoxic effects in both non-differentiated and in staurosporine-differentiated SH-SY5Y cells cytotoxicity as measured by the MTT and vital-dye exclusion tests. However, after a chronic (7-day) treatment, only imidacloprid dose-dependently decreased the viability of SH-SY5Y cells (F(4,39) = 43.05, P < 0.001), largely when administered-during cell differentiation (F(4,39) = 51.86, P < 0.001). A well-defined dose-response curve was constructed for imidacloprid on day 4 (R2 = 0.945, EC50 = 0.14 mM). During differentiation, either imidacloprid or acetamiprid dose-dependently caused neurite branch retraction on day 3, likely because of oxidative stress, to the extent that cells turned into spheres without neurites after 7-day treatment. Despite their apparent safety, the neurodevelopmental vulnerability of SH-SY5Y neurons to the chronic exposure to imidacloprid and to a lesser extent to acetamiprid points to a neurotoxic risk for humans.
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Affiliation(s)
| | | | - Luis G. Aguayo
- Department of Physiology, School of Biological Sciences, Universidad de Concepcion, Chile
| | - Fernando D. Vera-Erazo
- Department of Physiology, School of Biological Sciences, Universidad de Concepcion, Chile
| | - Santiago J. Ballaz
- Medical School, Universidad Espíritu Santo, Samborondón, Ecuador
- Corresponding author. School of Biological Sciences and Engineering, Yachay Tech University, Hacienda San José s/n, Proyecto Yachay. 100115, Urcuquí. Ecuador.
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Bellavite P. Neuroprotective Potentials of Flavonoids: Experimental Studies and Mechanisms of Action. Antioxidants (Basel) 2023; 12:antiox12020280. [PMID: 36829840 PMCID: PMC9951959 DOI: 10.3390/antiox12020280] [Citation(s) in RCA: 20] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2023] [Revised: 01/23/2023] [Accepted: 01/25/2023] [Indexed: 01/31/2023] Open
Abstract
Neurological and neurodegenerative diseases, particularly those related to aging, are on the rise, but drug therapies are rarely curative. Functional disorders and the organic degeneration of nervous tissue often have complex causes, in which phenomena of oxidative stress, inflammation and cytotoxicity are intertwined. For these reasons, the search for natural substances that can slow down or counteract these pathologies has increased rapidly over the last two decades. In this paper, studies on the neuroprotective effects of flavonoids (especially the two most widely used, hesperidin and quercetin) on animal models of depression, neurotoxicity, Alzheimer's disease (AD) and Parkinson's disease are reviewed. The literature on these topics amounts to a few hundred publications on in vitro and in vivo models (notably in rodents) and provides us with a very detailed picture of the action mechanisms and targets of these substances. These include the decrease in enzymes that produce reactive oxygen and ferroptosis, the inhibition of mono-amine oxidases, the stimulation of the Nrf2/ARE system, the induction of brain-derived neurotrophic factor production and, in the case of AD, the prevention of amyloid-beta aggregation. The inhibition of neuroinflammatory processes has been documented as a decrease in cytokine formation (mainly TNF-alpha and IL-1beta) by microglia and astrocytes, by modulating a number of regulatory proteins such as Nf-kB and NLRP3/inflammasome. Although clinical trials on humans are still scarce, preclinical studies allow us to consider hesperidin, quercetin, and other flavonoids as very interesting and safe dietary molecules to be further investigated as complementary treatments in order to prevent neurodegenerative diseases or to moderate their deleterious effects.
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The Use of Bioactive Compounds in Hyperglycemia- and Amyloid Fibrils-Induced Toxicity in Type 2 Diabetes and Alzheimer’s Disease. Pharmaceutics 2022; 14:pharmaceutics14020235. [PMID: 35213966 PMCID: PMC8879577 DOI: 10.3390/pharmaceutics14020235] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2021] [Revised: 01/14/2022] [Accepted: 01/19/2022] [Indexed: 12/29/2022] Open
Abstract
It has become increasingly apparent that defective insulin signaling may increase the risk for developing Alzheimer’s disease (AD), influence neurodegeneration through promotion of amyloid formation or by increasing inflammatory responses to intraneuronal β-amyloid. Recent work has demonstrated that hyperglycemia is linked to cognitive decline, with elevated levels of glucose causing oxidative stress in vulnerable tissues such as the brain. The ability of β-amyloid peptide to form β-sheet-rich aggregates and induce apoptosis has made amyloid fibrils a leading target for the development of novel pharmacotherapies used in managing and treatment of neuropathological conditions such as AD-related cognitive decline. Additionally, deposits of β-sheets folded amylin, a glucose homeostasis regulator, are also present in diabetic patients. Thus, therapeutic compounds capable of reducing intracellular protein aggregation in models of neurodegenerative disorders may prove useful in ameliorating type 2 diabetes mellitus symptoms. Furthermore, both diabetes and neurodegenerative conditions, such as AD, are characterized by chronic inflammatory responses accompanied by the presence of dysregulated inflammatory biomarkers. This review presents current evidence describing the role of various small bioactive molecules known to ameliorate amyloidosis and subsequent effects in prevention and development of diabetes and AD. It also highlights the potential efficacy of peptide–drug conjugates capable of targeting intracellular targets.
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Qu ZB, Jiang Y, Zhang J, Chen S, Zeng R, Zhuo Y, Lu M, Shi G, Gu H. Tailoring Oxygen-Containing Groups on Graphene for Ratiometric Electrochemical Measurements of Ascorbic Acid in Living Subacute Parkinson's Disease Mouse Brains. Anal Chem 2021; 93:16598-16607. [PMID: 34844405 DOI: 10.1021/acs.analchem.1c03965] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Ascorbic acid (AA), a major antioxidant in the central nervous system (CNS), is involved in withstanding oxidative stress that plays a significant role in the pathogenesis of Parkinson's disease (PD). Exploring the AA disturbance in the process of PD is of great value in understanding the molecular mechanism of PD. Herein, by virtue of a carbon fiber electrode (CFE) as a matric electrode, a three-step electrochemical process for tailoring oxygen-containing groups on graphene was well designed: potentiostatic deposition was carried out to fabricate graphene oxide on CFE, electrochemical reduction that assisted in removing the epoxy groups accelerated the electron transfer kinetics of AA oxidation, and electrochemical oxidation that increased the content of the carbonyl group (C═O) generated an inner-reference signal. The mechanism was solidified by ab initio calculations by comparing AA absorption on defected models of graphene functionalized with different oxygen groups including carboxyl, hydroxyl, epoxy, and carbonyl. It was found that epoxy groups would hinder the physical absorption of AA onto graphene, while other functional groups would be beneficial to it. Biocompatible polyethylenedioxythiophene (PEDOT) was further rationally assembled to improve the antifouling property of graphene. As a result, a new platform for ratiometric electrochemical measurements of AA with high sensitivity, excellent selectivity, and reproducibility was established. In vivo determination of AA levels in different regions of living mouse brains by the proposed method demonstrated that AA decreased remarkably in the hippocampus and cortex of a subacute PD mouse than those of a normal mouse.
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Affiliation(s)
- Zhi-Bei Qu
- Department of Medicinal Chemistry, School of Pharmacy, Fudan University, Shanghai 201203, China
| | - Yimin Jiang
- School of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Xiangtan, Hunan 411201, P. R. China
| | - Jiaxin Zhang
- School of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Xiangtan, Hunan 411201, P. R. China
| | - Shu Chen
- School of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Xiangtan, Hunan 411201, P. R. China
| | - Rongjin Zeng
- School of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Xiangtan, Hunan 411201, P. R. China
| | - Yi Zhuo
- Hunan Provincial Key Laboratory of Neurorestoratology, College of Life Sciences, Hunan Normal University, Changsha, Hunan 410006, P.R. China
| | - Ming Lu
- Hunan Provincial Key Laboratory of Neurorestoratology, College of Life Sciences, Hunan Normal University, Changsha, Hunan 410006, P.R. China
| | - Guoyue Shi
- School of Chemistry and Molecular Engineering, Shanghai Key Laboratory for Urban Ecological Processes and Eco-Restoration, East China Normal University, Shanghai 200241, P. R. China
| | - Hui Gu
- School of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Xiangtan, Hunan 411201, P. R. China
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Clergue-Duval V, Azuar J, Fonsart J, Delage C, Rollet D, Amami J, Frapsauce A, Gautron MA, Hispard E, Bellivier F, Bloch V, Laplanche JL, Questel F, Vorspan F. Ascorbic Acid Deficiency Prevalence and Associated Cognitive Impairment in Alcohol Detoxification Inpatients: A Pilot Study. Antioxidants (Basel) 2021; 10:antiox10121892. [PMID: 34942994 PMCID: PMC8750659 DOI: 10.3390/antiox10121892] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2021] [Revised: 11/23/2021] [Accepted: 11/24/2021] [Indexed: 12/29/2022] Open
Abstract
Malnutrition has been reported in alcohol use disorder patients as having a possible influence on cognitive function. The aim of this study was to analyse the prevalence of ascorbic acid (AA) deficiency in inpatients admitted for alcohol detoxification and the associated factors, including cognitive impairment in the early period of abstinence. A retrospective chart review was conducted. The AA level was categorised into three groups: deficiency (AAD) (<2 mg/L), insufficiency (AAI) (2–5 mg/L) and normal level. The cognitive impairment was screened using the Montreal Cognitive Assessment (MoCA). Ninety-six patients were included (74 men; mean age 49.1 years (±11.5)). Twenty-seven AAD (28.1%) and twenty-two AAI (22.9%) were observed. In multivariate analysis, risk factors for AAD versus normal AA level were men (OR 17.8, 95%CI (1.63–194)), compensated cirrhosis (OR 9.35, 95%CI (1.60–54.6)) and street homelessness (OR 5.76, 95%CI (1.24–26.8) versus personal housing). The MoCA score was available for 53 patients (mean MoCA score: 25.7 (±3.3)). In multivariate analysis, the natural logarithm of AA (β = 1.18, p = 0.037) and sedative use disorder (β = −2.77, p = 0.046) were associated with the MoCA score. AAD and AAI are frequent in inpatients admitted for alcohol detoxification. A low level of AA was associated with cognitive impairment in the early period of abstinence.
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Affiliation(s)
- Virgile Clergue-Duval
- APHP GHU Nord, Site Lariboisière Fernand-Widal, Département de Psychiatrie et de Médecine Addictologique, 75010 Paris, France; (J.A.); (D.R.); (J.A.); (E.H.); (F.B.); (F.Q.); (F.V.)
- Inserm UMRS-1144 Optimisation Thérapeutique en Neuropsychopharmacologie, Université de Paris, 75006 Paris, France; (C.D.); (V.B.); (J.-L.L.)
- FHU Network of Research in Substance Use Disorders (NOR-SUD), 75006 Paris, France;
- UFR de Médecine, Université de Paris, 75006 Paris, France
- Resalcog (Réseau Pour la Prise en Charge des Troubles Cognitifs Liés à L’alcool), 75017 Paris, France
- Correspondence:
| | - Julien Azuar
- APHP GHU Nord, Site Lariboisière Fernand-Widal, Département de Psychiatrie et de Médecine Addictologique, 75010 Paris, France; (J.A.); (D.R.); (J.A.); (E.H.); (F.B.); (F.Q.); (F.V.)
- Inserm UMRS-1144 Optimisation Thérapeutique en Neuropsychopharmacologie, Université de Paris, 75006 Paris, France; (C.D.); (V.B.); (J.-L.L.)
- FHU Network of Research in Substance Use Disorders (NOR-SUD), 75006 Paris, France;
- Resalcog (Réseau Pour la Prise en Charge des Troubles Cognitifs Liés à L’alcool), 75017 Paris, France
| | - Julien Fonsart
- APHP GHU Nord, Site Lariboisière Fernand-Widal, Département de Biochimie et Biologie Moléculaire, 75010 Paris, France;
| | - Clément Delage
- Inserm UMRS-1144 Optimisation Thérapeutique en Neuropsychopharmacologie, Université de Paris, 75006 Paris, France; (C.D.); (V.B.); (J.-L.L.)
- APHP GHU Nord, Site Lariboisière Fernand-Widal, Service de Pharmacie, 75010 Paris, France;
| | - Dorian Rollet
- APHP GHU Nord, Site Lariboisière Fernand-Widal, Département de Psychiatrie et de Médecine Addictologique, 75010 Paris, France; (J.A.); (D.R.); (J.A.); (E.H.); (F.B.); (F.Q.); (F.V.)
- FHU Network of Research in Substance Use Disorders (NOR-SUD), 75006 Paris, France;
| | - Jihed Amami
- APHP GHU Nord, Site Lariboisière Fernand-Widal, Département de Psychiatrie et de Médecine Addictologique, 75010 Paris, France; (J.A.); (D.R.); (J.A.); (E.H.); (F.B.); (F.Q.); (F.V.)
- FHU Network of Research in Substance Use Disorders (NOR-SUD), 75006 Paris, France;
| | - Alexia Frapsauce
- APHP GHU Nord, Site Lariboisière Fernand-Widal, Service de Pharmacie, 75010 Paris, France;
| | - Marie-Astrid Gautron
- FHU Network of Research in Substance Use Disorders (NOR-SUD), 75006 Paris, France;
- APHP GHU Nord, Site Beaujon, Unité de Traitement Ambulatoire des Maladies Addictives, 92110 Clichy, France
| | - Eric Hispard
- APHP GHU Nord, Site Lariboisière Fernand-Widal, Département de Psychiatrie et de Médecine Addictologique, 75010 Paris, France; (J.A.); (D.R.); (J.A.); (E.H.); (F.B.); (F.Q.); (F.V.)
- FHU Network of Research in Substance Use Disorders (NOR-SUD), 75006 Paris, France;
| | - Frank Bellivier
- APHP GHU Nord, Site Lariboisière Fernand-Widal, Département de Psychiatrie et de Médecine Addictologique, 75010 Paris, France; (J.A.); (D.R.); (J.A.); (E.H.); (F.B.); (F.Q.); (F.V.)
- Inserm UMRS-1144 Optimisation Thérapeutique en Neuropsychopharmacologie, Université de Paris, 75006 Paris, France; (C.D.); (V.B.); (J.-L.L.)
- FHU Network of Research in Substance Use Disorders (NOR-SUD), 75006 Paris, France;
- UFR de Médecine, Université de Paris, 75006 Paris, France
| | - Vanessa Bloch
- Inserm UMRS-1144 Optimisation Thérapeutique en Neuropsychopharmacologie, Université de Paris, 75006 Paris, France; (C.D.); (V.B.); (J.-L.L.)
- FHU Network of Research in Substance Use Disorders (NOR-SUD), 75006 Paris, France;
- APHP GHU Nord, Site Lariboisière Fernand-Widal, Service de Pharmacie, 75010 Paris, France;
- UFR de Pharmacie, Université de Paris, 75006 Paris, France
| | - Jean-Louis Laplanche
- Inserm UMRS-1144 Optimisation Thérapeutique en Neuropsychopharmacologie, Université de Paris, 75006 Paris, France; (C.D.); (V.B.); (J.-L.L.)
- APHP GHU Nord, Site Lariboisière Fernand-Widal, Département de Biochimie et Biologie Moléculaire, 75010 Paris, France;
- UFR de Pharmacie, Université de Paris, 75006 Paris, France
| | - Frank Questel
- APHP GHU Nord, Site Lariboisière Fernand-Widal, Département de Psychiatrie et de Médecine Addictologique, 75010 Paris, France; (J.A.); (D.R.); (J.A.); (E.H.); (F.B.); (F.Q.); (F.V.)
- Inserm UMRS-1144 Optimisation Thérapeutique en Neuropsychopharmacologie, Université de Paris, 75006 Paris, France; (C.D.); (V.B.); (J.-L.L.)
- FHU Network of Research in Substance Use Disorders (NOR-SUD), 75006 Paris, France;
- Resalcog (Réseau Pour la Prise en Charge des Troubles Cognitifs Liés à L’alcool), 75017 Paris, France
| | - Florence Vorspan
- APHP GHU Nord, Site Lariboisière Fernand-Widal, Département de Psychiatrie et de Médecine Addictologique, 75010 Paris, France; (J.A.); (D.R.); (J.A.); (E.H.); (F.B.); (F.Q.); (F.V.)
- Inserm UMRS-1144 Optimisation Thérapeutique en Neuropsychopharmacologie, Université de Paris, 75006 Paris, France; (C.D.); (V.B.); (J.-L.L.)
- FHU Network of Research in Substance Use Disorders (NOR-SUD), 75006 Paris, France;
- UFR de Médecine, Université de Paris, 75006 Paris, France
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Alrashidi H, Eaton S, Heales S. Biochemical characterization of proliferative and differentiated SH-SY5Y cell line as a model for Parkinson's disease. Neurochem Int 2021; 145:105009. [PMID: 33684546 DOI: 10.1016/j.neuint.2021.105009] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2020] [Revised: 02/24/2021] [Accepted: 03/01/2021] [Indexed: 12/13/2022]
Abstract
Parkinson's disease is a multifactorial neurodegenerative disease. The cellular pathology includes dopamine depletion, decrease in mitochondrial complex I enzyme activity, lysosomal glucocerebrosidase enzyme activity and glutathione levels. The SH-SY5Y human neuroblastoma cell line is one of the most widely used cell line models for Parkinson's disease. However, the consensus on its suitability as a model in its proliferative or differentiated state is lacking. In this study, we characterized and compared the biochemical processes most often studied in PD. This in proliferative and differentiated phenotypes of SH-SY5Y cells and several differences were found. Most notably, extracellular dopamine metabolism was significantly higher in differentiated SH-SY5Y. Furthermore, there was a greater variability in glutathione levels in proliferative phenotype (+/- 49%) compared to differentiated (+/- 16%). Finally, enzyme activity assay revealed significant increase in the lysosomal enzyme glucocerebrosidase activity in differentiated phenotype. In contrast, our study has found similarities between the two phenotypes in mitochondrial electron transport chain activity and tyrosine hydroxylase protein expression. The results of this study demonstrate that despite coming from the same cell line, these cells possess some key differences in their biochemistry. This highlights the importance of careful characterization of relevant disease pathways to assess the suitability of cell lines, such as SH-SY5Y cells, for modelling PD or other diseases, i.e. when using the same cell line but different differentiation states.
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Affiliation(s)
- Haya Alrashidi
- Genetics and Genomic Medicine, GOS Institute of Child Health, University College London, London, UK; Biochemistry Division, Faculty of Science, Kuwait University, Kuwait
| | - Simon Eaton
- Development Biology and Cancer, GOS Institute of Child Health, University College London, London, UK.
| | - Simon Heales
- Genetics and Genomic Medicine, GOS Institute of Child Health, University College London, London, UK; Neurometabolic Unit, National Hospital for Neurology and Neurosurgery, Queen Square, London, UK.
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10
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Ho TC, Teresi GI, Segarra JR, Ojha A, Walker JC, Gu M, Spielman DM, Sacchet MD, Jiang F, Rosenberg-Hasson Y, Maecker H, Gotlib IH. Higher Levels of Pro-inflammatory Cytokines Are Associated With Higher Levels of Glutamate in the Anterior Cingulate Cortex in Depressed Adolescents. Front Psychiatry 2021; 12:642976. [PMID: 33935833 PMCID: PMC8081972 DOI: 10.3389/fpsyt.2021.642976] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/18/2020] [Accepted: 02/26/2021] [Indexed: 12/14/2022] Open
Abstract
Animal models of stress and related conditions, including depression, have shown that elevated peripheral levels of inflammatory cytokines have downstream consequences on glutamate (Glu) in the brain. Although studies in human adults with depression have reported evidence of higher inflammation but lower Glu in the anterior cingulate cortex (ACC), the extent to which peripheral inflammation contributes to glutamatergic abnormalities in adolescents with depression is not well-understood. It is also unclear whether antioxidants, such as ascorbate (Asc), may buffer against the effects of inflammation on Glu metabolism. Fifty-five depressed adolescents were recruited in the present cross-sectional study and provided blood samples, from which we assayed pro-inflammatory cytokines, and underwent a short-TE proton magnetic spectroscopy scan at 3T, from which we estimated Glu and Asc in the dorsal ACC. In the 31 adolescents with usable cytokine and Glu data, we found that IL-6 was significantly positively associated with dorsal ACC Glu (β = 0.466 ± 0.199, p = 0.029). Of the 16 participants who had usable Asc data, we found that at higher levels of dorsal ACC Asc, there was a negative association between IL-6 and Glu (interaction effect: β = -0.906 ± 0.433, p = 0.034). Importantly, these results remained significant when controlling for age, gender, percentage of gray matter in the dorsal ACC voxel, BMI, and medication (antidepressant and anti-inflammatory) usage. While preliminary, our results underscore the importance of examining both immune and neural contributors to depression and highlight the potential role of anti-inflammatory compounds in mitigating the adverse effects of inflammation (e.g., glutamatergic neuroexcitotoxicity). Future studies that experimentally manipulate levels of inflammation, and of ascorbate, and that characterize these effects on cortical glutamate concentrations and subsequent behavior in animals and in humans are needed.
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Affiliation(s)
- Tiffany C Ho
- Department of Psychiatry and Weill Institute for Neurosciences, University of California, San Francisco, San Francisco, CA, United States
| | - Giana I Teresi
- Department of Psychology, Stanford University, Stanford, CA, United States
| | - Jillian R Segarra
- Department of Psychology, Stanford University, Stanford, CA, United States
| | - Amar Ojha
- Center for Neuroscience, University of Pittsburgh, Pittsburgh, PA, United States
| | - Johanna C Walker
- Department of Psychology, Stanford University, Stanford, CA, United States
| | - Meng Gu
- Department of Radiology, Stanford University, Stanford, CA, United States
| | - Daniel M Spielman
- Department of Radiology, Stanford University, Stanford, CA, United States
| | - Matthew D Sacchet
- Center for Depression, Anxiety, and Stress Research, McLean Hospital and Harvard Medical School, Belmont, MA, United States
| | - Fei Jiang
- Department of Epidemiology and Biostatistics, University of California, San Francisco, San Francisco, CA, United States
| | - Yael Rosenberg-Hasson
- Department of Microbiology and Immunology, Stanford University, Stanford, CA, United States
| | - Holden Maecker
- Department of Microbiology and Immunology, Stanford University, Stanford, CA, United States
| | - Ian H Gotlib
- Department of Psychology, Stanford University, Stanford, CA, United States
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11
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Walker JC, Teresi GI, Weisenburger RL, Segarra JR, Ojha A, Kulla A, Sisk L, Gu M, Spielman DM, Rosenberg-Hasson Y, Maecker HT, Singh MK, Gotlib IH, Ho TC. Study Protocol for Teen Inflammation Glutamate Emotion Research (TIGER). Front Hum Neurosci 2020; 14:585512. [PMID: 33192421 PMCID: PMC7604389 DOI: 10.3389/fnhum.2020.585512] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2020] [Accepted: 09/03/2020] [Indexed: 12/19/2022] Open
Abstract
This article provides an overview of the study protocol for the Teen Inflammation Glutamate Emotion Research (TIGER) project, a longitudinal study in which we plan to recruit 60 depressed adolescents (ages 13–18 years) and 30 psychiatrically healthy controls in order to examine the inflammatory and glutamatergic pathways that contribute to the recurrence of depression in adolescents. TIGER is the first study to examine the effects of peripheral inflammation on neurodevelopmental trajectories by assessing changes in cortical glutamate in depressed adolescents. Here, we describe the scientific rationale, design, and methods for the TIGER project. This article is intended to serve as an introduction to this project and to provide details for investigators who may be seeking to replicate or extend these methods for other related research endeavors.
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Affiliation(s)
- Johanna C Walker
- Department of Psychology, Stanford University, Stanford, CA, United States
| | - Giana I Teresi
- Department of Psychology, Stanford University, Stanford, CA, United States
| | | | - Jillian R Segarra
- Department of Psychology, Stanford University, Stanford, CA, United States
| | - Amar Ojha
- Center for Neuroscience, University of Pittsburgh, Pittsburgh, PA, United States
| | - Artenisa Kulla
- Department of Psychology, Stanford University, Stanford, CA, United States
| | - Lucinda Sisk
- Department of Psychology, Yale University, New Haven, CT, United States
| | - Meng Gu
- Department of Radiology, Stanford University, Stanford, CA, United States
| | - Daniel M Spielman
- Department of Radiology, Stanford University, Stanford, CA, United States.,Department of Electrical Engineering, Stanford University, Stanford, CA, United States
| | - Yael Rosenberg-Hasson
- Human Immune Monitoring Center, Stanford University, Stanford, CA, United States.,Department of Microbiology and Immunology, Stanford University, Stanford, CA, United States
| | - Holden T Maecker
- Human Immune Monitoring Center, Stanford University, Stanford, CA, United States.,Department of Microbiology and Immunology, Stanford University, Stanford, CA, United States
| | - Manpreet K Singh
- Department of Psychiatry and Behavioral Sciences, Stanford University, Stanford, CA, United States
| | - Ian H Gotlib
- Department of Psychology, Stanford University, Stanford, CA, United States
| | - Tiffany C Ho
- Weill Institute for Neurosciences, University of California, San Francisco, San Francisco, CA, United States.,Department of Psychiatry and Behavioral Sciences, University of California, San Francisco, San Francisco, CA, United States
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12
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Ying AF, Khan S, Wu Y, Jin A, Wong AS, Tan E, Yuan J, Koh W, Tan LC. Dietary Antioxidants and Risk of Parkinson's Disease in the Singapore Chinese Health Study. Mov Disord 2020; 35:1765-1773. [PMID: 32643256 PMCID: PMC7754435 DOI: 10.1002/mds.28173] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2020] [Revised: 04/24/2020] [Accepted: 05/26/2020] [Indexed: 12/18/2022] Open
Abstract
BACKGROUND Despite experimental evidence implicating oxidative stress in the pathogenesis of PD, epidemiological studies have provided inconsistent associations between dietary antioxidants and risk of developing PD. Furthermore, no study has been done in any Asian population. OBJECTIVES We examined the associations for intake levels of dietary carotenoids (α-carotene, β-carotene, lycopene, β-cryptoxanthin, and lutein) and vitamins (vitamin A, C and E) and the risk of developing PD. METHODS We used data from the Singapore Chinese Health Study, a population-based prospective cohort of 63,257 men and women aged 45 to 74 years during enrollment in 1993-1998. Antioxidant intake was derived from a validated semiquantitative food frequency questionnaire. Incident cases were identified through follow-up interviews, hospital records, or PD registries through 31 July 2018. Hazard ratios and corresponding 95% confidence intervals were derived from multivariable Cox proportional hazard regression models with adjustment for other lifestyle and dietary factors. RESULTS During an average 19.4 years of follow-up, 544 incident PD cases were identified. No association was found for dietary carotenoids, individually or summed. Hazard ratio comparing highest to lowest quartile for total carotenoids was 0.98 (95% confidence interval: 0.76-1.28; Ptrend = 0.83). There were also no clear dose-dependent associations of dietary vitamins A, C, and E with risk of developing PD (all Ptrend ≥ 0.10). Sensitive analyses with lag time and excluding supplement use did not materially alter results. CONCLUSIONS Intake of dietary antioxidants, such as carotenoids and vitamins, was not associated with the risk of developing PD in Singaporean Chinese. © 2020 The Authors. Movement Disorders published by Wiley Periodicals LLC on behalf of International Parkinson and Movement Disorder Society.
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Affiliation(s)
| | - Shazma Khan
- Department of NeurologyNational Neuroscience InstituteSingapore
| | - Ying Wu
- Department of NeurologyNational Neuroscience InstituteSingapore
| | - Aizhen Jin
- Health Services and Systems Research, Duke‐NUS Medical SchoolSingapore
| | - Aidan S.Y. Wong
- Department of NeurologyNational Neuroscience InstituteSingapore
| | - Eng‐King Tan
- Health Services and Systems Research, Duke‐NUS Medical SchoolSingapore
- Department of NeurologyNational Neuroscience InstituteSingapore
| | - Jian‐Min Yuan
- Division of Cancer Control and Population Sciences, UPMC Hillman Cancer Center, and Department of EpidemiologyGraduate School of Public Health, University of PittsburghPittsburghPennsylvaniaUSA
| | - Woon‐Puay Koh
- Health Services and Systems Research, Duke‐NUS Medical SchoolSingapore
- Saw Swee Hock School of Public HealthNational University of Singapore
| | - Louis C.S. Tan
- Health Services and Systems Research, Duke‐NUS Medical SchoolSingapore
- Department of NeurologyNational Neuroscience InstituteSingapore
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13
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Eleftheriadou D, Kesidou D, Moura F, Felli E, Song W. Redox-Responsive Nanobiomaterials-Based Therapeutics for Neurodegenerative Diseases. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2020; 16:e1907308. [PMID: 32940007 DOI: 10.1002/smll.201907308] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/14/2019] [Revised: 07/20/2020] [Indexed: 05/24/2023]
Abstract
Redox regulation has recently been proposed as a critical intracellular mechanism affecting cell survival, proliferation, and differentiation. Redox homeostasis has also been implicated in a variety of degenerative neurological disorders such as Parkinson's and Alzheimer's disease. In fact, it is hypothesized that markers of oxidative stress precede pathologic lesions in Alzheimer's disease and other neurodegenerative diseases. Several therapeutic approaches have been suggested so far to improve the endogenous defense against oxidative stress and its harmful effects. Among such approaches, the use of artificial antioxidant systems has gained increased popularity as an effective strategy. Nanoscale drug delivery systems loaded with enzymes, bioinspired catalytic nanoparticles and other nanomaterials have emerged as promising candidates. The development of degradable hydrogels scaffolds with antioxidant effects could also enable scientists to positively influence cell fate. This current review summarizes nanobiomaterial-based approaches for redox regulation and their potential applications as central nervous system neurodegenerative disease treatments.
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Affiliation(s)
- Despoina Eleftheriadou
- UCL Centre for Biomaterials in Surgical Reconstruction and Regeneration, Division of Surgery and Interventional Science, Royal Free Campus, University College London, London, NW3 2PF, UK
- Department of Mechanical Engineering, University College London, London, WC1E 7JE, UK
- UCL Centre for Nerve Engineering, University College London, London, WC1E 6BT, UK
| | - Despoina Kesidou
- UCL Centre for Biomaterials in Surgical Reconstruction and Regeneration, Division of Surgery and Interventional Science, Royal Free Campus, University College London, London, NW3 2PF, UK
| | - Francisco Moura
- UCL Centre for Biomaterials in Surgical Reconstruction and Regeneration, Division of Surgery and Interventional Science, Royal Free Campus, University College London, London, NW3 2PF, UK
| | - Eric Felli
- UCL Centre for Biomaterials in Surgical Reconstruction and Regeneration, Division of Surgery and Interventional Science, Royal Free Campus, University College London, London, NW3 2PF, UK
| | - Wenhui Song
- UCL Centre for Biomaterials in Surgical Reconstruction and Regeneration, Division of Surgery and Interventional Science, Royal Free Campus, University College London, London, NW3 2PF, UK
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14
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Plasma Vitamin C Concentrations Were Negatively Associated with Tingling, Prickling or Pins and Needles Sensation in Patients with Postherpetic Neuralgia. Nutrients 2020; 12:nu12082384. [PMID: 32784896 PMCID: PMC7468915 DOI: 10.3390/nu12082384] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2020] [Revised: 08/05/2020] [Accepted: 08/06/2020] [Indexed: 12/13/2022] Open
Abstract
Vitamin C deficiency increases the risk of postherpetic neuralgia (PHN). In this cross-sectional study, the relationships among plasma vitamin C concentrations, pain and Leeds assessment of neuropathic symptoms and signs (LANSS) items were investigated during their first pain clinic visit of 120 PHN patients. The factors associated with vitamin C deficiency were determined. Independent predictors of vitamin C deficiency were presented as adjusted odds ratios (AOR) and 95% confidence intervals (CI). The patients had a high prevalence (52.5%) of vitamin C deficiency. Their plasma vitamin C concentrations were negatively associated with spontaneous pain and tingling, prickling or pins and needles sensation according to the LANSS questionnaire. Based on the receiver operator characteristic curve, the cutoffs for plasma vitamin C to predict moderate-to-severe and severe symptoms of sharp sensation were <7.05 and <5.68 mg/L, respectively. By comparison, the patients well-nourished with vitamin C had lower incidences of sharp sensations, sharp pain, and reddish skin. Multivariate analyses revealed that vitamin C deficiency was associated with the low intake of fruit/vegetables (AOR 2.66, 95% CI 1.09–6.48, p = 0.032), peptic ulcer disease (AOR 3.25, 95% CI 1.28–8.28, p = 0.014), and smoking (AOR 3.60, 95% CI 1.33–9.77, p = 0.010). Future studies are needed to substantiate these findings.
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15
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Ahmad F, Haque S, Ravinayagam V, Ahmad A, Kamli MR, Barreto GE, Ghulam Md Ashraf. Developmental lead (Pb)-induced deficits in redox and bioenergetic status of cerebellar synapses are ameliorated by ascorbate supplementation. Toxicology 2020; 440:152492. [PMID: 32407874 DOI: 10.1016/j.tox.2020.152492] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2020] [Revised: 04/08/2020] [Accepted: 05/07/2020] [Indexed: 10/24/2022]
Abstract
Neurotoxicity induced by exposure to heavy metal lead (Pb) is a concern of utmost importance particularly for countries with industrial-based economies. The developing brain is especially sensitive to exposure to even minute quantities of Pb which can alter neurodevelopmental trajectory with irreversible effects on motor, emotive-social and cognitive attributes even into later adulthood. Chemical synapses form the major pathway of inter-neuronal communications and are prime candidates for higher order brain (motor, memory and behavior) functions and determine the resistance/susceptibility for neurological disorders, including neuropsychopathologies. The synaptic pathways and mechanisms underlying Pb-mediated alterations in neuronal signaling and plasticity are not completely understood. Employing a biochemically isolated synaptosomal fraction which is enriched in synaptic terminals and synaptic mitochondria, this study aimed to analyze the alterations in bioenergetic and redox/antioxidant status of cerebellar synapses induced by developmental exposure to Pb (0.2 %). Moreover, we test the efficacy of vitamin C (ascorbate; 500 mg/kg body weight), a neuroprotective and neuromodulatory antioxidant, in mitigation of Pb-induced neuronal deficits. Our results implicate redox and bioenergetic disruptions as an underlying feature of the synaptic dysfunction observed in developmental Pb neurotoxicity, potentially contributing to consequent deficits in motor, behavioral and psychological attributes of the organisms. In addition, we establish ascorbate as a key ingredient for therapeutic approach against Pb induced neurotoxicity, particularly for early-life exposures.
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Affiliation(s)
- Faraz Ahmad
- Department of Anatomy, School of Biomedical Sciences, University of Otago, Dunedin 9016, New Zealand.
| | - Shafiul Haque
- Research and Scientific Studies Unit, College of Nursing & Allied Health Sciences, Jazan University, Jazan, 45142, Saudi Arabia
| | - Vijaya Ravinayagam
- Deanship of Scientific Research, Department of Nano-medicine Research, Institute for Research and Medical Consultations, Imam Abdulrahman Bin Faisal University, Dammam, 31441, Saudi Arabia
| | - Aqeel Ahmad
- Department of Medical Biochemistry, College of Medicine, Shaqra University, Shaqra, 11961, Saudi Arabia
| | - Majid Rasool Kamli
- Center of Excellence in Bionanoscience Research, King Abdulaziz University, Jeddah, 21589, Saudi Arabia; Department of Biological Sciences, Faculty of Science, King Abdulaziz University, Jeddah, 21589, Saudi Arabia
| | - George E Barreto
- Department of Biological Sciences, University of Limerick, Limerick, Ireland; Health Research Institute, University of Limerick, Limerick, Ireland
| | - Ghulam Md Ashraf
- King Fahd Medical Research Center, King Abdulaziz University, Jeddah, Saudi Arabia; Department of Medical Laboratory Technology, Faculty of Applied Medical Sciences, King Abdulaziz University, Jeddah, Saudi Arabia
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16
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Kurihara K, Homma T, Kobayashi S, Shichiri M, Fujiwara H, Fujii S, Yamada KI, Nakane M, Kawamae K, Fujii J. Ascorbic acid insufficiency impairs spatial memory formation in juvenile AKR1A-knockout mice. J Clin Biochem Nutr 2019; 65:209-216. [PMID: 31777422 PMCID: PMC6877411 DOI: 10.3164/jcbn.19-41] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2019] [Accepted: 06/18/2019] [Indexed: 01/18/2023] Open
Abstract
AKR1A, an aldo-keto reductase, is involved in the synthesis of ascorbic acid as well as the reduction of a variety of aldehyde compounds. AKR1A−/− mice produce considerably less ascorbic acid (about 10%) compared to AKR1A+/+ mice and require ascorbic acid supplementation in order to breed. To elucidate the roles played by AKR1A in spatial memory, AKR1A−/− male mice were weaned at 4 weeks of age and groups that received ascorbic acid supplementation and no supplementation were subjected to a Morris water maze test. Juvenile AKR1A−/− mice that received no supplementation showed impaired spatial memory formation, even though about 70% of the ascorbic acid remained in the brains of the AKR1A−/− mice at day 7 after weaning. To the contrary, the young adult AKR1A−/− mice at 13–15 weeks of age maintained only 15% of ascorbic acid but showed no significant difference in the spatial memory compared with the AKR1A+/+ mice or ascorbic acid-supplemented AKR1A−/− mice. It is conceivable that juvenile mice require more ascorbic acid for the appropriate level of formation of spatial memory and that maturation of the neural system renders the memory forming process less sensitive to an ascorbic acid insufficiency.
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Affiliation(s)
- Kazuki Kurihara
- Department of Biochemistry and Molecular Biology, Graduate School of Medical Science, Yamagata University, 2-2-2 Iidanishi, Yamagata 990-9585, Japan.,Department of Anesthesiology, Faculty of Medicine, Yamagata University, 2-2-2 Iidanishi, Yamagata 990-9585, Japan
| | - Takujiro Homma
- Department of Biochemistry and Molecular Biology, Graduate School of Medical Science, Yamagata University, 2-2-2 Iidanishi, Yamagata 990-9585, Japan
| | - Sho Kobayashi
- Department of Biochemistry and Molecular Biology, Graduate School of Medical Science, Yamagata University, 2-2-2 Iidanishi, Yamagata 990-9585, Japan
| | - Mototada Shichiri
- Biomedical Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), 1-8-31 Midorigaoka, Ikeda, Osaka 563-8577, Japan
| | - Hiroki Fujiwara
- Department of Physiology, Faculty of Medicine, Yamagata University, 2-2-2 Iidanishi, Yamagata 990-9585, Japan
| | - Satoshi Fujii
- Department of Physiology, Faculty of Medicine, Yamagata University, 2-2-2 Iidanishi, Yamagata 990-9585, Japan
| | - Ken-Ichi Yamada
- Physical Chemistry for Life Science Laboratory, Faculty of Pharmaceutical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka 812-8582, Japan.,AMED-CREST, Japan Agency for Medical Research and Development, 1-7-1 Otemachi, Chiyoda-ku, Tokyo, Japan
| | - Masaki Nakane
- Department of Emergency and Critical Care Medicine, Faculty of Medicine, Yamagata University, 2-2-2 Iidanishi, Yamagata 990-9585, Japan
| | - Kaneyuki Kawamae
- Department of Anesthesiology, Faculty of Medicine, Yamagata University, 2-2-2 Iidanishi, Yamagata 990-9585, Japan
| | - Junichi Fujii
- Department of Biochemistry and Molecular Biology, Graduate School of Medical Science, Yamagata University, 2-2-2 Iidanishi, Yamagata 990-9585, Japan
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17
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Ballaz SJ, Rebec GV. Neurobiology of vitamin C: Expanding the focus from antioxidant to endogenous neuromodulator. Pharmacol Res 2019; 146:104321. [PMID: 31229562 DOI: 10.1016/j.phrs.2019.104321] [Citation(s) in RCA: 48] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/26/2019] [Revised: 06/16/2019] [Accepted: 06/18/2019] [Indexed: 01/06/2023]
Abstract
Ascorbic acid (AA) is a water-soluble vitamin (C) found in all bodily organs. Most mammals synthesize it, humans are required to eat it, but all mammals need it for healthy functioning. AA reaches its highest concentration in the brain where both neurons and glia rely on tightly regulated uptake from blood via the glucose transport system and sodium-coupled active transport to accumulate and maintain AA at millimolar levels. As a prototype antioxidant, AA is not only neuroprotective, but also functions as a cofactor in redox-coupled reactions essential for the synthesis of neurotransmitters (e.g., dopamine and norepinephrine) and paracrine lipid mediators (e.g., epoxiecoisatrienoic acids) as well as the epigenetic regulation of DNA. Although redox capacity led to the promotion of AA in high doses as potential treatment for various neuropathological and psychiatric conditions, ample evidence has not supported this therapeutic strategy. Here, we focus on some long-neglected aspects of AA neurobiology, including its modulatory role in synaptic transmission as demonstrated by the long-established link between release of endogenous AA in brain extracellular fluid and the clearance of glutamate, an excitatory amino acid. Evidence that this link can be disrupted in animal models of Huntington´s disease is revealing opportunities for new research pathways and therapeutic applications (e.g., epilepsy and pain management). In fact, we suggest that improved understanding of the regulation of endogenous AA and its interaction with key brain neurotransmitter systems, rather than administration of AA in excess, should be the target of future brain-based therapies.
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Affiliation(s)
- Santiago J Ballaz
- School of Biological Sciences and Engineering, Yachay Tech University, Urcuqui, Ecuador.
| | - George V Rebec
- Program in Neuroscience, Department Psychological & Brain Sciences, Indiana University, Bloomington, USA.
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18
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Martínez-Orozco H, Mariño L, Uceda AB, Ortega-Castro J, Vilanova B, Frau J, Adrover M. Nitration and Glycation Diminish the α-Synuclein Role in the Formation and Scavenging of Cu 2+-Catalyzed Reactive Oxygen Species. ACS Chem Neurosci 2019; 10:2919-2930. [PMID: 30973706 DOI: 10.1021/acschemneuro.9b00142] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023] Open
Abstract
Human α-synuclein is a small monomeric protein (140 residues) essential to maintain the function of the dopaminergic neurons and the neuronal redox balance. However, it holds a dark side since it is able to clump inside the neurons forming insoluble aggregates known as Lewy bodies, which are considered the hallmark of Parkinson's disease. Sporadic mutations and nonenzymatic post-translational modifications are well-known to stimulate the formation of Lewy bodies. Yet, the effect of nonenzymatic post-translational modifications on the function of α-synuclein has been studied less intense. Therefore, here we study how nitration and glycation mediated by methylglyoxal affect the redox features of α-synuclein. Both diminish the ability of α-synuclein to chelate Cu2+, except when Nε-(carboxyethyl)lysine or Nε-(carboxymethyl)lysine (two advanced glycation end products highly prevalent in vivo) are formed. This results in a lower capacity to prevent the Cu-catalyzed ascorbic acid degradation and to delay the formation of H2O2. However, only methylglyoxal was able to abolish the ability of α-synuclein to inhibit the free radical release. Both nitration and glycation enhanced the α-synuclein availability to be damaged by O2•-, although glycation made α-synuclein less reactive toward HO•. Our data represent the first report describing how nonenzymatic post-translational modifications might affect the redox function of α-synuclein, thus contributing to a better understanding of its pathological implications.
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Affiliation(s)
- Humberto Martínez-Orozco
- Institut Universitari d’Investigació en Ciències de la Salut (IUNICS), Institut de Recerca en Ciències de la Salut (IdISBa), Departament de Química, Universitat de les Illes Balears, Ctra. Valldemossa km 7.5, E-07122 Palma de Mallorca, Spain
| | - Laura Mariño
- Institut Universitari d’Investigació en Ciències de la Salut (IUNICS), Institut de Recerca en Ciències de la Salut (IdISBa), Departament de Química, Universitat de les Illes Balears, Ctra. Valldemossa km 7.5, E-07122 Palma de Mallorca, Spain
| | - Ana Belén Uceda
- Institut Universitari d’Investigació en Ciències de la Salut (IUNICS), Institut de Recerca en Ciències de la Salut (IdISBa), Departament de Química, Universitat de les Illes Balears, Ctra. Valldemossa km 7.5, E-07122 Palma de Mallorca, Spain
| | - Joaquín Ortega-Castro
- Institut Universitari d’Investigació en Ciències de la Salut (IUNICS), Institut de Recerca en Ciències de la Salut (IdISBa), Departament de Química, Universitat de les Illes Balears, Ctra. Valldemossa km 7.5, E-07122 Palma de Mallorca, Spain
| | - Bartolomé Vilanova
- Institut Universitari d’Investigació en Ciències de la Salut (IUNICS), Institut de Recerca en Ciències de la Salut (IdISBa), Departament de Química, Universitat de les Illes Balears, Ctra. Valldemossa km 7.5, E-07122 Palma de Mallorca, Spain
| | - Juan Frau
- Institut Universitari d’Investigació en Ciències de la Salut (IUNICS), Institut de Recerca en Ciències de la Salut (IdISBa), Departament de Química, Universitat de les Illes Balears, Ctra. Valldemossa km 7.5, E-07122 Palma de Mallorca, Spain
| | - Miquel Adrover
- Institut Universitari d’Investigació en Ciències de la Salut (IUNICS), Institut de Recerca en Ciències de la Salut (IdISBa), Departament de Química, Universitat de les Illes Balears, Ctra. Valldemossa km 7.5, E-07122 Palma de Mallorca, Spain
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19
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Disubstituted Dithiolethione ACDT Exerts Neuroprotective Effects Against 6-Hydroxydopamine-Induced Oxidative Stress in SH-SY5Y Cells. Neurochem Res 2019; 44:1878-1892. [DOI: 10.1007/s11064-019-02823-3] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2019] [Revised: 05/13/2019] [Accepted: 05/30/2019] [Indexed: 12/20/2022]
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20
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Walia V, Garg C, Garg M. Nitrergic signaling modulation by ascorbic acid treatment is responsible for anxiolysis in mouse model of anxiety. Behav Brain Res 2019; 364:85-98. [PMID: 30738102 DOI: 10.1016/j.bbr.2019.02.007] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2018] [Revised: 01/16/2019] [Accepted: 02/04/2019] [Indexed: 10/27/2022]
Abstract
The present study was designed to investigate the effect of ascorbic acid (AA) treatment on the anxiety related behavioral and neurochemical alterations. AA (50, 100 and 200 mg/kg, i.p.) was administered to the mice and anxiety related behavior and levels of glutamate and nitrite in the brain of mice were determined. The results obtained revealed that the administration of AA (100 mg/kg, i.p.) significantly reduced the anxiety related behavior and the levels of nitrite in the brain of mice. Nitrergic interactions were further determined by the pretreatment of mice with nitric oxide (NO) modulator and AA treatment followed by behavioral and neurochemical measurements. The results obtained suggested that NO inhibition potentiated the anxiolytic like activity of AA in mice. It was also observed that the glutamate and nitrite level in the brain of mice were significantly reduced by the NO inhibitor pretreatment. Thus, the present study demonstrated the possible nitrergic pathways modulation in the anxiolytic like activity of AA in mice.
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Affiliation(s)
- Vaibhav Walia
- Department of Pharmaceutical Sciences, Maharshi Dayanand University, Rohtak-124001, Haryana, India.
| | - Chanchal Garg
- Department of Pharmaceutical Sciences, Maharshi Dayanand University, Rohtak-124001, Haryana, India.
| | - Munish Garg
- Department of Pharmaceutical Sciences, Maharshi Dayanand University, Rohtak-124001, Haryana, India.
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Xiong S, Song Y, Liu J, Du Y, Ding Y, Wei H, Bryan K, Ma F, Mao L. Neuroprotective effects of MK-801 on auditory cortex in salicylate-induced tinnitus: Involvement of neural activity, glutamate and ascorbate. Hear Res 2019; 375:44-52. [PMID: 30795964 DOI: 10.1016/j.heares.2019.01.021] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/23/2018] [Revised: 01/17/2019] [Accepted: 01/30/2019] [Indexed: 12/14/2022]
Abstract
Tinnitus may cause anxiety, depression, insomnia, which impair the quality of life of millions worldwide. However, the mechanism of tinnitus remains to be understood, it has been previously hypothesized that the activation of N-methyl-D-aspartate (NMDA) receptor is involved in the tinnitus processes and blockade of the NMDA receptor is regarded as a therapeutic strategy for tinnitus treatment even if the rescue treatment is still proved invalid in some cases. To demonstrate the therapeutic effect of the NMDA receptor blocker on tinnitus, we examined here the spontaneous firing rate (SFR) and the neurochemical dynamics in the auditory cortex (AC) of rats after sodium salicylate (SS) injection, which is a widely used model for tinnitus research. We also recorded their responses to MK-801 treatment. Electrophysiological studies showed that MK-801 significantly suppresses SFR in AC of rats with SS-induced tinnitus. In addition, by using a technique that combining in vivo microdialysis with an online electrochemical system (OECS) and a high-performance liquid chromatography (HPLC), we found that the levels of both glutamate and ascorbate in AC dramatically increased after SS injection and that MK-801 administration attenuated those response. Further studies found that MK-801 given at a time point of 30 min pre- or post-injection of SS were more effective than that given at a time point of 60 min post-SS injection, indicating that the time point of MK-801 intervention has a critical impact on the therapeutic effect. These findings suggest that MK-801 plays a neuroprotective role against hyperactivity during tinnitus induced by SS and that the therapeutic effect depends on the time point of MK-801 intervention, which would advance the studies on understanding of the therapeutic potential of NMDA receptor antagonist in tinnitus therapy.
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Affiliation(s)
- Shan Xiong
- Department of Otolaryngology Head and Neck Surgery, Peking University Third Hospital, Beijing, 100191, China
| | - Yu Song
- Department of Otolaryngology Head and Neck Surgery, Peking University Third Hospital, Beijing, 100191, China
| | - Junxiu Liu
- Department of Otolaryngology Head and Neck Surgery, Peking University Third Hospital, Beijing, 100191, China
| | - Yali Du
- Department of Otolaryngology Head and Neck Surgery, Peking University Third Hospital, Beijing, 100191, China
| | - Yujing Ding
- Department of Otolaryngology Head and Neck Surgery, Peking University Third Hospital, Beijing, 100191, China
| | - Huan Wei
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Analytical Chemistry for Living Biosystems, Institute of Chemistry, The Chinese Academy of Sciences, Beijing, 100190, China
| | - Kevin Bryan
- Junipero Serra High School, San Mateo, CA, USA
| | - Furong Ma
- Department of Otolaryngology Head and Neck Surgery, Peking University Third Hospital, Beijing, 100191, China.
| | - Lanqun Mao
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Analytical Chemistry for Living Biosystems, Institute of Chemistry, The Chinese Academy of Sciences, Beijing, 100190, China.
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Man Anh H, Linh DM, My Dung V, Thi Phuong Thao D. Evaluating Dose- and Time-Dependent Effects of Vitamin C Treatment on a Parkinson's Disease Fly Model. PARKINSON'S DISEASE 2019; 2019:9720546. [PMID: 30719278 PMCID: PMC6334328 DOI: 10.1155/2019/9720546] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/08/2018] [Revised: 10/25/2018] [Accepted: 11/08/2018] [Indexed: 02/03/2023]
Abstract
Parkinson's disease (PD) is a common neurodegenerative disorder and characterized by progressive locomotive defects and loss of dopaminergic neurons (DA neuron). Currently, there is no potent therapy to cure PD, and the medications merely support to control the symptoms. It is difficult to develop an effective treatment, since the PD onset mechanism of PD is still unclear. Oxidative stress is considered as a major cause of neurodegenerative diseases, and there is increasing evidence for the association between PD and oxidative stress. Therefore, antioxidant treatment may be a promising therapy for PD. Drosophila with knockdown of dUCH, a homolog of UCH-L1 which is a PD-related gene, exhibited PD-like phenotypes including progressive locomotive impairments and DA neuron degeneration. Moreover, knockdown of dUCH led to elevated level of ROS. Thus, dUCH knockdown flies can be used as a model for screening of potential antioxidants for treating PD. Previous studies demonstrated that curcumin at 1 mM and vitamin C at 0.5 mM could improve PD-like phenotypes induced by this knockdown. With the purpose of further investigating the efficiency of vitamin C in PD treatment, we used dUCH knockdown Drosophila model to examine the dose- and time-dependent effects of vitamin C on PD-like phenotypes. The results showed that although vitamin C exerted neuroprotective effects, high doses of vitamin C and long-term treatment with this antioxidant also resulted in side effects on physiology. It is suggested that dose-dependent effects of vitamin C should be considered when used for treating PD.
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Affiliation(s)
- Huynh Man Anh
- Department of Molecular and Environmental Biotechnology, Faculty of Biology and Biotechnology, University of Science, Vietnam National University Ho Chi Minh City, Ho Chi Minh City 700000, Vietnam
| | - Dao My Linh
- Department of Molecular and Environmental Biotechnology, Faculty of Biology and Biotechnology, University of Science, Vietnam National University Ho Chi Minh City, Ho Chi Minh City 700000, Vietnam
| | - Vuu My Dung
- Department of Molecular and Environmental Biotechnology, Faculty of Biology and Biotechnology, University of Science, Vietnam National University Ho Chi Minh City, Ho Chi Minh City 700000, Vietnam
| | - Dang Thi Phuong Thao
- Department of Molecular and Environmental Biotechnology, Faculty of Biology and Biotechnology, University of Science, Vietnam National University Ho Chi Minh City, Ho Chi Minh City 700000, Vietnam
- Laboratory of Molecular Biotechnology, University of Science, Vietnam National University Ho Chi Minh City, Ho Chi Minh City 700000, Vietnam
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Yusuf M, Khan M, Robaian MA, Khan RA. Biomechanistic insights into the roles of oxidative stress in generating complex neurological disorders. Biol Chem 2018; 399:305-319. [PMID: 29261511 DOI: 10.1515/hsz-2017-0250] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2017] [Accepted: 12/07/2017] [Indexed: 12/13/2022]
Abstract
Neurological diseases like Alzheimer's disease, epilepsy, parkinsonism, depression, Huntington's disease and amyotrophic lateral sclerosis prevailing globally are considered to be deeply influenced by oxidative stress-based changes in the biochemical settings of the organs. The excess oxygen concentration triggers the production of reactive oxygen species, and even the intrinsic antioxidant enzyme system, i.e. SOD, CAT and GSHPx, fails to manage their levels and keep them under desirable limits. This consequently leads to oxidation of protein, lipids and nucleic acids in the brain resulting in apoptosis, proteopathy, proteasomes and mitochondrion dysfunction, glial cell activation as well as neuroinflammation. The present exploration deals with the evidence-based mechanism of oxidative stress towards development of key neurological diseases along with the involved biomechanistics and biomaterials.
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Affiliation(s)
- Mohammad Yusuf
- College of Pharmacy, Taif University, Taif-Al-Haweiah 21974, Saudi Arabia
| | - Maria Khan
- College of Pharmacy, Taif University, Taif-Al-Haweiah 21974, Saudi Arabia
| | - Majed A Robaian
- College of Pharmacy, Taif University, Taif-Al-Haweiah 21974, Saudi Arabia
| | - Riaz A Khan
- Medicinal Chemistry Department, Qassim University, Qassim 51452, Saudi Arabia
- Department of Chemistry, MRIU, Faridabad, HR 121 001, India
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González-Fuentes J, Selva J, Moya C, Castro-Vázquez L, Lozano MV, Marcos P, Plaza-Oliver M, Rodríguez-Robledo V, Santander-Ortega MJ, Villaseca-González N, Arroyo-Jimenez MM. Neuroprotective Natural Molecules, From Food to Brain. Front Neurosci 2018; 12:721. [PMID: 30405328 PMCID: PMC6206709 DOI: 10.3389/fnins.2018.00721] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2018] [Accepted: 09/20/2018] [Indexed: 12/16/2022] Open
Abstract
The prevalence of neurodegenerative disorders is increasing; however, an effective neuroprotective treatment is still remaining. Nutrition plays an important role in neuroprotection as recently shown by epidemiological and biochemical studies which identified food components as promising therapeutic agents. Neuroprotection includes mechanisms such as activation of specific receptors, changes in enzymatic neuronal activity, and synthesis and secretion of different bioactive molecules. All these mechanisms are focused on preventing neuronal damage and alleviating the consequences of massive cell loss. Some neuropathological disorders selectively affect to particular neuronal populations, thus is important to know their neurochemical and anatomical properties in order to design effective therapies. Although the design of such treatments would be specific to neuronal groups sensible to damage, the effect would have an impact in the whole nervous system. The difficult overcoming of the blood brain barrier has hampered the development of efficient therapies for prevention or protection. This structure is a physical, enzymatic, and influx barrier that efficiently protects the brain from exogenous molecules. Therefore, the development of new strategies, like nanocarriers, that help to promote the access of neuroprotective molecules to the brain, is needed for providing more effective therapies for the disorders of the central nervous system (CNS). In order both to trace the success of these nanoplatforms on the release of the bioactive cargo in the CNS and determinate the concentration at trace levels of targets biomolecules by analytical chemistry and concretely separation instrumental techniques, constitute an essential tool. Currently, these techniques are used for the determination and identification of natural neuroprotective molecules in complex matrixes at different concentration levels. Separation techniques such as chromatography and capillary electrophoresis (CE), using optical and/or mass spectrometry (MS) detectors, provide multiples combinations for the quantitative and qualitative analysis at basal levels or higher concentrations of bioactive analytes in biological samples. Bearing this in mind, the development of food neuroprotective molecules as brain therapeutic agents is a complex task that requires the intimate collaboration and engagement of different disciplines for a successful outcome. In this sense, this work reviews the new advances achieved in the area toward a better understanding of the current state of the art and highlights promising approaches for brain neuroprotection.
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Affiliation(s)
- Joaquin González-Fuentes
- Cellular Neuroanatomy and Molecular Chemistry of Central Nervous System, Faculty of Pharmacy and Faculty of Medicine, University of Castilla-La Mancha, CRIB (Regional Centre of Biomedical Research), Albacete, Spain
| | - Jorge Selva
- Cellular Neuroanatomy and Molecular Chemistry of Central Nervous System, Faculty of Pharmacy and Faculty of Medicine, University of Castilla-La Mancha, CRIB (Regional Centre of Biomedical Research), Albacete, Spain
| | - Carmen Moya
- Cellular Neuroanatomy and Molecular Chemistry of Central Nervous System, Faculty of Pharmacy and Faculty of Medicine, University of Castilla-La Mancha, CRIB (Regional Centre of Biomedical Research), Albacete, Spain
| | - Lucia Castro-Vázquez
- Cellular Neuroanatomy and Molecular Chemistry of Central Nervous System, Faculty of Pharmacy and Faculty of Medicine, University of Castilla-La Mancha, CRIB (Regional Centre of Biomedical Research), Albacete, Spain
| | - Maria V Lozano
- Cellular Neuroanatomy and Molecular Chemistry of Central Nervous System, Faculty of Pharmacy and Faculty of Medicine, University of Castilla-La Mancha, CRIB (Regional Centre of Biomedical Research), Albacete, Spain
| | - Pilar Marcos
- Cellular Neuroanatomy and Molecular Chemistry of Central Nervous System, Faculty of Pharmacy and Faculty of Medicine, University of Castilla-La Mancha, CRIB (Regional Centre of Biomedical Research), Albacete, Spain
| | - Maria Plaza-Oliver
- Cellular Neuroanatomy and Molecular Chemistry of Central Nervous System, Faculty of Pharmacy and Faculty of Medicine, University of Castilla-La Mancha, CRIB (Regional Centre of Biomedical Research), Albacete, Spain
| | - Virginia Rodríguez-Robledo
- Cellular Neuroanatomy and Molecular Chemistry of Central Nervous System, Faculty of Pharmacy and Faculty of Medicine, University of Castilla-La Mancha, CRIB (Regional Centre of Biomedical Research), Albacete, Spain
| | - Manuel J Santander-Ortega
- Cellular Neuroanatomy and Molecular Chemistry of Central Nervous System, Faculty of Pharmacy and Faculty of Medicine, University of Castilla-La Mancha, CRIB (Regional Centre of Biomedical Research), Albacete, Spain
| | - Noemi Villaseca-González
- Cellular Neuroanatomy and Molecular Chemistry of Central Nervous System, Faculty of Pharmacy and Faculty of Medicine, University of Castilla-La Mancha, CRIB (Regional Centre of Biomedical Research), Albacete, Spain
| | - Maria M Arroyo-Jimenez
- Cellular Neuroanatomy and Molecular Chemistry of Central Nervous System, Faculty of Pharmacy and Faculty of Medicine, University of Castilla-La Mancha, CRIB (Regional Centre of Biomedical Research), Albacete, Spain
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25
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Saffarpour S, Nasirinezhad F. Functional interaction between N-methyl-D-aspartate receptor and ascorbic acid during neuropathic pain induced by chronic constriction injury of the sciatic nerve. J Basic Clin Physiol Pharmacol 2018; 28:601-608. [PMID: 28902622 DOI: 10.1515/jbcpp-2017-0015] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2017] [Accepted: 06/29/2017] [Indexed: 01/10/2023]
Abstract
BACKGROUND Neuropathic pain is a chronic pain condition, which is resistant to therapy. Ascorbate was released because of the activation of glutaminergic neurons. Due to the important role of N-methyl-D-aspartate (NMDA) receptors in the pathophysiology of neuropathic pain, this study investigated the analgesic efficacy of ascorbic acid (AA) in neuropathic pain condition and the role of NMDA receptors in this effect. METHODS For this purpose, adult male rats were randomly allocated to experimental groups (n=8 in each group). Neuropathic pain was induced by chronic constriction injury (CCI) of the sciatic nerve. During the second week after CCI, animals received a single injection of 1, 3, 5, or 10 mg/kg of AA intraperitoneally and pain threshold was determined 15 and 60 min later. The antinociceptive effect of chronic administration was also evaluated by intraperitoneal injection (IP) of 3 mg/kg AA for 3 weeks. To determine the role of NMDA receptors, separate groups of animals 30 min after single injection of AA (1 mg/kg) animals received i.p. injection of ketamine (5 mg/kg), MK-801 (0.01 mg/kg), or glutamate (1000 nmol) and were tested 20 min afterwards. Data analyzed by ANOVA and Newman-Keuls tests and p<0.05 were considered as significant. RESULTS IP of 3, 5 and 10 mg/kg increased the pain threshold during the second week after CCI (p<0.05, F=3 in tactile allodynia and p<0.01, F=3.2 in thermal and mechanical hyperalgeisa). Chronic administration of AA also produced antinociceptive effect. Ascorbic acid (1 mg/kg, i.p.) inhibited MK-801 and ketamine-induced antinociception response significantly (p<0.001, F=2). It also prevented the analgesic effect of glutamate administration (p<0.001, F=2). CONCLUSIONS The results indicated that AA produced a dose-dependent antinociceptive effect that seems to mediate through its interaction with NMDA receptors.
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Dixit S, Fessel JP, Harrison FE. Mitochondrial dysfunction in the APP/PSEN1 mouse model of Alzheimer's disease and a novel protective role for ascorbate. Free Radic Biol Med 2017; 112:515-523. [PMID: 28863942 PMCID: PMC5623070 DOI: 10.1016/j.freeradbiomed.2017.08.021] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/20/2017] [Revised: 07/21/2017] [Accepted: 08/27/2017] [Indexed: 01/23/2023]
Abstract
Mitochondrial dysfunction is elevated in very early stages of Alzheimer's disease and exacerbates oxidative stress, which contributes to disease pathology. Mitochondria were isolated from 4-month-old wild-type mice, transgenic mice carrying the APPSWE and PSEN1dE9 mutations, mice with decreased brain and mitochondrial ascorbate (vitamin C) via heterozygous knockout of the sodium dependent vitamin C transporter (SVCT2+/-) and transgenic APP/PSEN1 mice with heterozygous SVCT2 expression. Mitochondrial isolates from SVCT2+/- mice were observed to consume less oxygen using high-resolution respirometry, and also exhibited decreased mitochondrial membrane potential compared to wild type isolates. Conversely, isolates from young (4 months) APP/PSEN1 mice consumed more oxygen, and exhibited an increase in mitochondrial membrane potential, but had a significantly lower ATP/ADP ratio compared to wild type isolates. Greater levels of reactive oxygen species were also produced in mitochondria isolated from both APP/PSEN1 and SVCT2+/- mice compared to wild type isolates. Acute administration of ascorbate to mitochondria isolated from wild-type mice increased oxygen consumption compared with untreated mitochondria suggesting ascorbate may support energy production. This study suggests that both presence of amyloid and ascorbate deficiency can contribute to mitochondrial dysfunction, even at an early, prodromal stage of Alzheimer's disease, although occurring via different pathways. Ascorbate may, therefore, provide a useful preventative strategy against neurodegenerative disease, particularly in populations most at risk for Alzheimer's disease in which stores are often depleted through mitochondrial dysfunction and elevated oxidative stress.
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Affiliation(s)
- Shilpy Dixit
- Division of Diabetes, Endocrinology and Metabolism, Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee 37232, USA; Graduate Program in Neuroscience, Vanderbilt University, Nashville, Tennessee 37232, USA
| | - Joshua P Fessel
- Division of Allergy, Pulmonary, and Critical Care Medicine, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN 37232, USA; Department of Pharmacology, Vanderbilt University School of Medicine, Nashville, TN 37232, USA; Department of Cancer Biology, Vanderbilt University School of Medicine, Nashville, TN 37232, USA
| | - Fiona E Harrison
- Division of Diabetes, Endocrinology and Metabolism, Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee 37232, USA.
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Vitamin C, Aging and Alzheimer's Disease. Nutrients 2017; 9:nu9070670. [PMID: 28654021 PMCID: PMC5537785 DOI: 10.3390/nu9070670] [Citation(s) in RCA: 123] [Impact Index Per Article: 17.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2017] [Revised: 06/01/2017] [Accepted: 06/13/2017] [Indexed: 02/07/2023] Open
Abstract
Accumulating evidence in mice models of accelerated senescence indicates a rescuing role of ascorbic acid in premature aging. Supplementation of ascorbic acid appeared to halt cell growth, oxidative stress, telomere attrition, disorganization of chromatin, and excessive secretion of inflammatory factors, and extend lifespan. Interestingly, ascorbic acid (AA) was also found to positively modulate inflamm-aging and immunosenescence, two hallmarks of biological aging. Moreover, ascorbic acid has been shown to epigenetically regulate genome integrity and stability, indicating a key role of targeted nutrition in healthy aging. Growing in vivo evidence supports the role of ascorbic acid in ameliorating factors linked to Alzheimer’s disease (AD) pathogenesis, although evidence in humans yielded equivocal results. The neuroprotective role of ascorbic acid not only relies on the general free radical trapping, but also on the suppression of pro-inflammatory genes, mitigating neuroinflammation, on the chelation of iron, copper, and zinc, and on the suppression of amyloid-beta peptide (Aβ) fibrillogenesis. Epidemiological evidence linking diet, one of the most important modifiable lifestyle factors, and risk of Alzheimer's disease is rapidly increasing. Thus, dietary interventions, as a way to epigenetically modulate the human genome, may play a role in the prevention of AD. The present review is aimed at providing an up to date overview of the main biological mechanisms that are associated with ascorbic acid supplementation/bioavailability in the process of aging and Alzheimer’s disease. In addition, we will address new fields of research and future directions.
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Kocot J, Luchowska-Kocot D, Kiełczykowska M, Musik I, Kurzepa J. Does Vitamin C Influence Neurodegenerative Diseases and Psychiatric Disorders? Nutrients 2017; 9:E659. [PMID: 28654017 PMCID: PMC5537779 DOI: 10.3390/nu9070659] [Citation(s) in RCA: 120] [Impact Index Per Article: 17.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2017] [Revised: 06/15/2017] [Accepted: 06/21/2017] [Indexed: 02/07/2023] Open
Abstract
Vitamin C (Vit C) is considered to be a vital antioxidant molecule in the brain. Intracellular Vit C helps maintain integrity and function of several processes in the central nervous system (CNS), including neuronal maturation and differentiation, myelin formation, synthesis of catecholamine, modulation of neurotransmission and antioxidant protection. The importance of Vit C for CNS function has been proven by the fact that targeted deletion of the sodium-vitamin C co-transporter in mice results in widespread cerebral hemorrhage and death on post-natal day one. Since neurological diseases are characterized by increased free radical generation and the highest concentrations of Vit C in the body are found in the brain and neuroendocrine tissues, it is suggested that Vit C may change the course of neurological diseases and display potential therapeutic roles. The aim of this review is to update the current state of knowledge of the role of vitamin C on neurodegenerative diseases including Alzheimer's disease, Parkinson's disease, Huntington's disease, multiple sclerosis and amyotrophic sclerosis, as well as psychiatric disorders including depression, anxiety and schizophrenia. The particular attention is attributed to understanding of the mechanisms underlying possible therapeutic properties of ascorbic acid in the presented disorders.
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Affiliation(s)
- Joanna Kocot
- Chair and Department of Medical Chemistry, Medical University of Lublin, 4A Chodźki Street, 20-093 Lublin, Poland.
| | - Dorota Luchowska-Kocot
- Chair and Department of Medical Chemistry, Medical University of Lublin, 4A Chodźki Street, 20-093 Lublin, Poland.
| | - Małgorzata Kiełczykowska
- Chair and Department of Medical Chemistry, Medical University of Lublin, 4A Chodźki Street, 20-093 Lublin, Poland.
| | - Irena Musik
- Chair and Department of Medical Chemistry, Medical University of Lublin, 4A Chodźki Street, 20-093 Lublin, Poland.
| | - Jacek Kurzepa
- Chair and Department of Medical Chemistry, Medical University of Lublin, 4A Chodźki Street, 20-093 Lublin, Poland.
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Xicoy H, Wieringa B, Martens GJM. The SH-SY5Y cell line in Parkinson's disease research: a systematic review. Mol Neurodegener 2017; 12:10. [PMID: 28118852 PMCID: PMC5259880 DOI: 10.1186/s13024-017-0149-0] [Citation(s) in RCA: 542] [Impact Index Per Article: 77.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2016] [Accepted: 01/05/2017] [Indexed: 12/29/2022] Open
Abstract
Parkinson’s disease (PD) is a devastating and highly prevalent neurodegenerative disease for which only symptomatic treatment is available. In order to develop a truly effective disease-modifying therapy, improvement of our current understanding of the molecular and cellular mechanisms underlying PD pathogenesis and progression is crucial. For this purpose, standardization of research protocols and disease models is necessary. As human dopaminergic neurons, the cells mainly affected in PD, are difficult to obtain and maintain as primary cells, current PD research is mostly performed with permanently established neuronal cell models, in particular the neuroblastoma SH-SY5Y lineage. This cell line is frequently chosen because of its human origin, catecholaminergic (though not strictly dopaminergic) neuronal properties, and ease of maintenance. However, there is no consensus on many fundamental aspects that are associated with its use, such as the effects of culture media composition and of variations in differentiation protocols. Here we present the outcome of a systematic review of scientific articles that have used SH-SY5Y cells to explore PD. We describe the cell source, culture conditions, differentiation protocols, methods/approaches used to mimic PD and the preclinical validation of the SH-SY5Y findings by employing alternative cellular and animal models. Thus, this overview may help to standardize the use of the SH-SY5Y cell line in PD research and serve as a future user’s guide.
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Affiliation(s)
- Helena Xicoy
- Department of Cell Biology, Radboud Institute for Molecular Life Sciences (RIMLS), Radboudumc, Nijmegen, The Netherlands.,Department of Molecular Animal Physiology, Donders Institute for Brain, Cognition and Behaviour, Radboud University, Nijmegen, The Netherlands
| | - Bé Wieringa
- Department of Cell Biology, Radboud Institute for Molecular Life Sciences (RIMLS), Radboudumc, Nijmegen, The Netherlands
| | - Gerard J M Martens
- Department of Molecular Animal Physiology, Donders Institute for Brain, Cognition and Behaviour, Radboud University, Nijmegen, The Netherlands.
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Szpetnar M, Luchowska-Kocot D, Boguszewska-Czubara A, Kurzepa J. The Influence of Manganese and Glutamine Intake on Antioxidants and Neurotransmitter Amino Acids Levels in Rats' Brain. Neurochem Res 2016; 41:2129-39. [PMID: 27161372 PMCID: PMC4947112 DOI: 10.1007/s11064-016-1928-7] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2015] [Revised: 03/25/2016] [Accepted: 04/18/2016] [Indexed: 01/11/2023]
Abstract
Depending on the concentration, Mn can exert protective or toxic effect. Potential mechanism for manganese neurotoxicity is manganese-induced oxidative stress. Glutamine supplementation could reduce manganese-induced neurotoxicity and is able to influence the neurotransmission processes. The aim of this study was to investigate whether the long term administration of manganese (alone or in combination with glutamine) in dose and time dependent manner could affect the selected parameters of oxidative-antioxidative status (superoxide dismutase and glutathione peroxidase activities, concentrations of vitamin C and malonic dialdehyde) and concentrations of excitatory (Asp, Glu) and inhibitory amino acids (GABA, Gly) in the brain of rats. The experiments were carried out on 2-months-old albino male rats randomly divided into 6 group: Mn300 and Mn500—received solution of MnCl2 to drink (dose 300 and 500 mg/L, respectively), Gln group—solution of glutamine (4 g/L), Mn300-Gln and Mn500-Gln groups—solution of Mn at 300 and 500 mg/L and Gln at 4 g/L dose. The control group (C) received deionized water. Half of the animals were euthanized after three and the other half—after 6 weeks of experiment. The exposure of rats to Mn in drinking water contributes to diminishing of the antioxidant enzymes activity and the increase in level of lipid peroxidation. Glutamine in the diet admittedly increases SOD and GPx activity, but it is unable to restore the intracellular redox balance. The most significant differences in the examined amino acids levels in comparison to both control and Gln group were observed in the group of rats receiving Mn at 500 mg/L dose alone or with Gln. It seems that Gln is amino acid which could improve antioxidant status and affect the concentrations of the neurotransmitters.
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Affiliation(s)
- Maria Szpetnar
- Chair and Department of Medical Chemistry, Medical University of Lublin, 4A Chodźki Street, 20-093, Lublin, Poland
| | - Dorota Luchowska-Kocot
- Chair and Department of Medical Chemistry, Medical University of Lublin, 4A Chodźki Street, 20-093, Lublin, Poland.
| | - Anna Boguszewska-Czubara
- Chair and Department of Medical Chemistry, Medical University of Lublin, 4A Chodźki Street, 20-093, Lublin, Poland
| | - Jacek Kurzepa
- Chair and Department of Medical Chemistry, Medical University of Lublin, 4A Chodźki Street, 20-093, Lublin, Poland
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Pahrudin Arrozi A, Wan Ngah WZ, Mohd Yusof YA, Ahmad Damanhuri MH, Makpol S. Antioxidant modulation in restoring mitochondrial function in neurodegeneration. Int J Neurosci 2016; 127:218-235. [PMID: 27074540 DOI: 10.1080/00207454.2016.1178261] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
Alzheimer's disease (AD) and Parkinson's disease (PD) are the leading causes of disability associated with neurodegeneration worldwide. These diseases are influenced by multiple genetic and environmental factors and share similar mechanisms as both are characterized by accumulation and aggregation of misfolded proteins - amyloid-beta (Aβ) in AD and α-synuclein in PD. Over the past decade, increasing evidence has shown that mitochondrial dysfunction and the generation of reactive oxygen species (ROS) are involved in the pathology of these diseases, and the contributions of these defects to the cellular and molecular changes that eventually cause neuronal death have been explored. Using mitochondrial protective agents, such as antioxidants, to combat ROS provides a new strategy for neurodegenerative treatment. In this review, we highlight the potential of multiple types of antioxidants, including vitamins, phytochemicals, fatty acids and minerals, as well as synthetic antioxidants specifically targeting the mitochondria, which can restore mitochondrial function, in the treatment of neurodegenerative disorders at both the pre-clinical and clinical stages by focusing on AD and PD.
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Affiliation(s)
- Aslina Pahrudin Arrozi
- a Department of Biochemistry , Universiti Kebangsaan Malaysia Medical Center , Kuala Lumpur , Malaysia
| | - Wan Zurinah Wan Ngah
- a Department of Biochemistry , Universiti Kebangsaan Malaysia Medical Center , Kuala Lumpur , Malaysia
| | - Yasmin Anum Mohd Yusof
- a Department of Biochemistry , Universiti Kebangsaan Malaysia Medical Center , Kuala Lumpur , Malaysia
| | | | - Suzana Makpol
- a Department of Biochemistry , Universiti Kebangsaan Malaysia Medical Center , Kuala Lumpur , Malaysia
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Cunha MP, Lieberknecht V, Ramos-Hryb AB, Olescowicz G, Ludka FK, Tasca CI, Gabilan NH, Rodrigues ALS. Creatine affords protection against glutamate-induced nitrosative and oxidative stress. Neurochem Int 2016; 95:4-14. [PMID: 26804444 DOI: 10.1016/j.neuint.2016.01.002] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2015] [Revised: 01/07/2016] [Accepted: 01/18/2016] [Indexed: 12/11/2022]
Abstract
Creatine has been reported to exert beneficial effects in several neurodegenerative diseases in which glutamatergic excitotoxicity and oxidative stress play an etiological role. The purpose of this study was to investigate the protective effects of creatine, as compared to the N-Methyl-d-Aspartate (NMDA) receptor antagonist dizocilpine (MK-801), against glutamate or hydrogen peroxide (H2O2)-induced injury in human neuroblastoma SH-SY5Y cells. Exposure of cells to glutamate (60-80 mM) or H2O2 (200-300 μM) for 24 h decreased cellular viability and increased dichlorofluorescein (DCF) fluorescence (indicative of increased reactive oxygen species, ROS) and nitric oxide (NO) production (assessed by mono-nitrogen oxides, NOx, levels). Creatine (1-10 mM) or MK-801 (0.1-10 μM) reduced glutamate- and H2O2-induced toxicity. The protective effect of creatine against glutamate-induced toxicity involves its antioxidant effect, since creatine, similar to MK-801, prevented the increase on DCF fluorescence induced by glutamate or H2O2. Furthermore, creatine or MK-801 blocked glutamate- and H2O2-induced increases in NOx levels. In another set of experiments, the repeated, but not acute, administration of creatine (300 mg/kg, po) in mice prevented the decreases on cellular viability and mitochondrial membrane potential (assessed by tetramethylrhodamine ethyl ester, TMRE, probe) of hippocampal slices incubated with glutamate (10 mM). Creatine concentration-dependent decreased the amount of nitrite formed in the reaction of oxygen with NO produced from sodium nitroprusside solution, suggesting that its protective effect against glutamate or H2O2-induced toxicity might be due to its scavenger activity. Overall, the results suggest that creatine may be useful as adjuvant therapy for neurodegenerative disease treatments.
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Affiliation(s)
- Mauricio P Cunha
- Department of Biochemistry, Center of Biological Sciences, Universidade Federal de Santa Catarina, Campus Universitário, Trindade, 88040-900, Florianópolis, SC, Brazil.
| | - Vicente Lieberknecht
- Department of Biochemistry, Center of Biological Sciences, Universidade Federal de Santa Catarina, Campus Universitário, Trindade, 88040-900, Florianópolis, SC, Brazil
| | - Ana Belén Ramos-Hryb
- Department of Biochemistry, Center of Biological Sciences, Universidade Federal de Santa Catarina, Campus Universitário, Trindade, 88040-900, Florianópolis, SC, Brazil
| | - Gislaine Olescowicz
- Department of Biochemistry, Center of Biological Sciences, Universidade Federal de Santa Catarina, Campus Universitário, Trindade, 88040-900, Florianópolis, SC, Brazil
| | - Fabiana K Ludka
- Department of Biochemistry, Center of Biological Sciences, Universidade Federal de Santa Catarina, Campus Universitário, Trindade, 88040-900, Florianópolis, SC, Brazil
| | - Carla I Tasca
- Department of Biochemistry, Center of Biological Sciences, Universidade Federal de Santa Catarina, Campus Universitário, Trindade, 88040-900, Florianópolis, SC, Brazil
| | - Nelson H Gabilan
- Department of Biochemistry, Center of Biological Sciences, Universidade Federal de Santa Catarina, Campus Universitário, Trindade, 88040-900, Florianópolis, SC, Brazil
| | - Ana Lúcia S Rodrigues
- Department of Biochemistry, Center of Biological Sciences, Universidade Federal de Santa Catarina, Campus Universitário, Trindade, 88040-900, Florianópolis, SC, Brazil
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Old Things New View: Ascorbic Acid Protects the Brain in Neurodegenerative Disorders. Int J Mol Sci 2015; 16:28194-217. [PMID: 26633354 PMCID: PMC4691042 DOI: 10.3390/ijms161226095] [Citation(s) in RCA: 82] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2015] [Revised: 09/23/2015] [Accepted: 10/14/2015] [Indexed: 12/13/2022] Open
Abstract
Ascorbic acid is a key antioxidant of the Central Nervous System (CNS). Under brain activity, ascorbic acid is released from glial reservoirs to the synaptic cleft, where it is taken up by neurons. In neurons, ascorbic acid scavenges reactive oxygen species (ROS) generated during synaptic activity and neuronal metabolism where it is then oxidized to dehydroascorbic acid and released into the extracellular space, where it can be recycled by astrocytes. Other intrinsic properties of ascorbic acid, beyond acting as an antioxidant, are important in its role as a key molecule of the CNS. Ascorbic acid can switch neuronal metabolism from glucose consumption to uptake and use of lactate as a metabolic substrate to sustain synaptic activity. Multiple evidence links oxidative stress with neurodegeneration, positioning redox imbalance and ROS as a cause of neurodegeneration. In this review, we focus on ascorbic acid homeostasis, its functions, how it is used by neurons and recycled to ensure antioxidant supply during synaptic activity and how this antioxidant is dysregulated in neurodegenerative disorders.
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Morales I, Sanchez A, Rodriguez-Sabate C, Rodriguez M. The degeneration of dopaminergic synapses in Parkinson's disease: A selective animal model. Behav Brain Res 2015; 289:19-28. [PMID: 25907749 DOI: 10.1016/j.bbr.2015.04.019] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2015] [Revised: 04/09/2015] [Accepted: 04/11/2015] [Indexed: 12/21/2022]
Abstract
Available evidence increasingly suggests that the degeneration of dopamine neurons in Parkinson's disease starts in the striatal axons and synaptic terminals. A selective procedure is described here to study the mechanisms involved in the striatal denervation of dopaminergic terminals. This procedure can also be used to analyze mechanisms involved in the dopaminergic re-innervation of the striatum, and the role of astrocytes and microglia in both processes. Adult Sprague-Dawley rats were injected in the lateral ventricles with increasing doses of 6-hydroxydopamine (12-50 μg), which generated a dose-dependent loss of dopaminergic synapses and axons in the striatum, followed by an axonal sprouting (weeks later) and by a progressive recovery of striatal dopaminergic synapses (months later). Both the degeneration and regeneration of the dopaminergic terminals were accompanied by astrogliosis. Because the experimental manipulations did not induce unspecific damage in the striatal tissue, this method could be particularly suitable to study the basic mechanisms involved in the distal degeneration and regeneration of dopaminergic nigrostriatal neurons, and the possible role of astrocytes and microglia in the dynamics of both processes.
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Affiliation(s)
- Ingrid Morales
- Laboratory of Neurobiology and Experimental Neurology, Department of Physiology Faculty of Medicine, University of La Laguna, La Laguna, Tenerife, Canary Islands, Spain; Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED), Madrid, Spain
| | - Alberto Sanchez
- Laboratory of Neurobiology and Experimental Neurology, Department of Physiology Faculty of Medicine, University of La Laguna, La Laguna, Tenerife, Canary Islands, Spain
| | - Clara Rodriguez-Sabate
- Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED), Madrid, Spain
| | - Manuel Rodriguez
- Laboratory of Neurobiology and Experimental Neurology, Department of Physiology Faculty of Medicine, University of La Laguna, La Laguna, Tenerife, Canary Islands, Spain; Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED), Madrid, Spain.
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Jia M, Njapo SAN, Rastogi V, Hedna VS. Taming glutamate excitotoxicity: strategic pathway modulation for neuroprotection. CNS Drugs 2015; 29:153-62. [PMID: 25633850 DOI: 10.1007/s40263-015-0225-3] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Much work has been carried out in recent years showing that elevated glutamate levels in the extracellular environment of the central nervous system play a pivotal role in neurodegeneration in acute CNS injuries. With the elucidation of the mechanism governing glutamate excitotoxicity, researchers are devising therapeutic strategies to target different parts of the pathway which begins with glutamate accumulation and ultimately results in neuronal cell death. In this article, we review some of the major classes of agents that are currently being investigated and highlight some of the key studies for each. Glutamate scavenging is a relatively new approach that directly decreases glutamate levels in the brain, thus preventing excitotoxicity. Nitric oxide inhibitors and free radical scavengers are more well-studied strategies that continue to yield promising results.
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Affiliation(s)
- Ming Jia
- University of Florida College of Medicine, Gainesville, FL, USA
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Prooxidant versus antioxidant brain action of ascorbic acid in well-nourished and malnourished rats as a function of dose: A cortical spreading depression and malondialdehyde analysis. Neuropharmacology 2014; 86:155-60. [DOI: 10.1016/j.neuropharm.2014.06.027] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2014] [Revised: 06/25/2014] [Accepted: 06/27/2014] [Indexed: 11/21/2022]
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Ide K, Yamada H, Umegaki K, Mizuno K, Kawakami N, Hagiwara Y, Matsumoto M, Yoshida H, Kim K, Shiosaki E, Yokochi T, Harada K. Lymphocyte vitamin C levels as potential biomarker for progression of Parkinson's disease. Nutrition 2014; 31:406-8. [PMID: 25592020 DOI: 10.1016/j.nut.2014.08.001] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2014] [Revised: 07/31/2014] [Accepted: 08/02/2014] [Indexed: 11/16/2022]
Abstract
OBJECTIVES Vitamin C is a major antioxidant and also is known as a neuromodulator in dopaminergic neurons. The aim of this study was to investigate the association between lymphocyte and plasma vitamin C levels in various stages of Parkinson's disease (PD). METHODS Sixty-two individuals with PD (age 71 ± 8.8 y [mean ± SD]) being treated at Shizuoka General Hospital from December 2007 to August 2013 were consecutively recruited. PD severity was classified using the Hoehn-Yahr scale for staging PD. Fasting blood samples were collected, and plasma and lymphocyte vitamin C levels were measured. The association between PD severity and vitamin C levels was estimated by ordinal logistic regression with confounding variables. RESULTS The distribution of Hoehn-Yahr stages in patients was as follows: stage I, 7; II, 28; III, 16; and IV, 11. Lymphocyte vitamin C levels in patients with severe PD were significantly lower (odds ratio [OR], 0.87; 95% confidence interval [CI], 0.80-0.97; P < 0.01) compared with those at less severe stages. Plasma vitamin C levels also tended to be lower in patients with severe PD; however, this was not significant (OR, 0.98; 95% CI, 0.96-1.00; P = 0.09). CONCLUSIONS Our findings suggest that lymphocyte vitamin C levels in the peripheral blood may be a potentially useful biomarker for the progression of PD.
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Affiliation(s)
- Kazuki Ide
- Department of Drug Evaluation and Informatics, Graduate School of Pharmaceutical Sciences, University of Shizuoka, Shizuoka, Japan
| | - Hiroshi Yamada
- Department of Drug Evaluation and Informatics, Graduate School of Pharmaceutical Sciences, University of Shizuoka, Shizuoka, Japan; Department of Neurology, Shizuoka General Hospital, Shizuoka, Japan.
| | - Keizo Umegaki
- National Institute of Health and Nutrition, Tokyo, Japan
| | - Katsuki Mizuno
- Department of Drug Evaluation and Informatics, Graduate School of Pharmaceutical Sciences, University of Shizuoka, Shizuoka, Japan
| | - Nobuko Kawakami
- Department of Neurology, Shizuoka General Hospital, Shizuoka, Japan
| | - Yuka Hagiwara
- Department of Neurology, Shizuoka General Hospital, Shizuoka, Japan
| | - Mizuki Matsumoto
- Department of Neurology, Shizuoka General Hospital, Shizuoka, Japan
| | - Hidefumi Yoshida
- Department of Neurology, Shizuoka General Hospital, Shizuoka, Japan
| | - Kang Kim
- Department of Neurology, Shizuoka General Hospital, Shizuoka, Japan
| | - Emi Shiosaki
- Department of Clinical Laboratory Medicine, Shizuoka General Hospital, Shizuoka, Japan
| | - Tsunehiro Yokochi
- Department of Clinical Laboratory Medicine, Shizuoka General Hospital, Shizuoka, Japan
| | - Kiyoshi Harada
- Department of Neurology, Shizuoka General Hospital, Shizuoka, Japan
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Yang EJ, Kim GS, Jun M, Song KS. Kaempferol attenuates the glutamate-induced oxidative stress in mouse-derived hippocampal neuronal HT22 cells. Food Funct 2014; 5:1395-402. [PMID: 24770605 DOI: 10.1039/c4fo00068d] [Citation(s) in RCA: 72] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
It is thought that the neuronal cell loss caused by oxidative stress is the primary mechanism underlying the pathogenesis of several neurodegenerative disorders. Glutamate is an endogenous neurotransmitter, but at high concentrations it can act as a neurotoxicant by increasing the intracellular levels of reactive oxygen species (ROS). Therefore, the development of factors that can attenuate glutamate-induced oxidative stress in neuronal cells is a good strategy by which new drugs could be discovered that may treat or prevent neurodegenerative diseases. Here, the neuroprotective effects of kaempferol (KF) isolated from the stems of butterbur (Petasites japonicus) were examined in glutamate-treated hippocampal neuronal cells (HT22). The administration of KF (25 μM) resulted in a significant increase in cell viability (105.18 ± 7.48%) compared with the control (100.00 ± 3.05%), while glutamate (5 mM) reduced cell viability by 39.94 ± 1.61%. The glutamate-induced calcium (Ca(2+)) influx (1.93 ± 0.08-fold) was significantly reduced by 0.89 ± 0.02-fold following the administration of 25 μM KF. Additionally, when HT22 cells were stressed with excessive glutamate, there was a 3.70 ± 0.01-fold increase in intracellular ROS generation, even though this was effectively attenuated by KF (25 μM, 0.72 ± 0.01-fold). The protective effects of KF in HT22 cells were later confirmed using a lactate dehydrogenase (LDH) assay and a FITC-annexin V/propidium iodide double staining procedure. These findings also revealed that the neuroprotective effects of KF are a result of the regulation of the expression levels of proteins, such as Bcl-2, Bid, apoptosis-inducing factor (AIF), and mitogen-activated protein kinase (MAPK). This is the first report to investigate the neuroprotective influence of KF in glutamate-treated HT22 cells. These data demonstrate that KF may be a useful candidate for pharmacological therapies that can prevent and treat neurodegenerative diseases such as Alzheimer's disease (AD).
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Affiliation(s)
- Eun-Ju Yang
- Research Institute of Pharmaceutical Sciences, College of Pharmacy, Kyungpook National University, Daehak-ro 80, Sankyuk-dong, Deagu 702-701, Republic of Korea.
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Ascorbic acid and the brain: rationale for the use against cognitive decline. Nutrients 2014; 6:1752-81. [PMID: 24763117 PMCID: PMC4011065 DOI: 10.3390/nu6041752] [Citation(s) in RCA: 57] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2013] [Revised: 03/24/2014] [Accepted: 04/10/2014] [Indexed: 12/21/2022] Open
Abstract
This review is focused upon the role of ascorbic acid (AA, vitamin C) in the promotion of healthy brain aging. Particular attention is attributed to the biochemistry and neuronal metabolism interface, transport across tissues, animal models that are useful for this area of research, and the human studies that implicate AA in the continuum between normal cognitive aging and age-related cognitive decline up to Alzheimer’s disease. Vascular risk factors and comorbidity relationships with cognitive decline and AA are discussed to facilitate strategies for advancing AA research in the area of brain health and neurodegeneration.
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40
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Xiang L, Yu P, Hao J, Zhang M, Zhu L, Dai L, Mao L. Vertically Aligned Carbon Nanotube-Sheathed Carbon Fibers as Pristine Microelectrodes for Selective Monitoring of Ascorbate in Vivo. Anal Chem 2014; 86:3909-14. [DOI: 10.1021/ac404232h] [Citation(s) in RCA: 88] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Ling Xiang
- Beijing
National Laboratory for Molecular Sciences, Key Laboratory of Analytical
Chemistry for Living Biosystems, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Ping Yu
- Beijing
National Laboratory for Molecular Sciences, Key Laboratory of Analytical
Chemistry for Living Biosystems, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Jie Hao
- Beijing
National Laboratory for Molecular Sciences, Key Laboratory of Analytical
Chemistry for Living Biosystems, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Meining Zhang
- Department
of Chemistry, Renmin University of China, Beijing 100872, China
| | - Lin Zhu
- Department
of Macromolecular Science and Engineering, Case Western Reserve University, Cleveland, Ohio 44106, United States
| | - Liming Dai
- Department
of Macromolecular Science and Engineering, Case Western Reserve University, Cleveland, Ohio 44106, United States
| | - Lanqun Mao
- Beijing
National Laboratory for Molecular Sciences, Key Laboratory of Analytical
Chemistry for Living Biosystems, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
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