1
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Peng S, Zhou Y, Lu M, Wang Q. Review of Herbal Medicines for the Treatment of Depression. Nat Prod Commun 2022. [DOI: 10.1177/1934578x221139082] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
Abstract
Depression, a mental illness that is receiving increasing attention, is caused by multiple factors and genes and adversely affects social life and health. Several hypotheses have been proposed to clarify the pathogenesis of depression, and various synthetic antidepressants have been introduced to treat patients with depression. However, these drugs are effective only in a proportion of patients and fail to achieve complete remission. Recently, herbal medicines have received much attention as alternative treatments for depression because of their fewer side effects and lower costs. In this review, we have mainly focused on the herbal medicines that have been proven in clinical studies (especially randomized controlled trials and preclinical studies) to have antidepressant effects; we also describe the potential mechanisms of the antidepressant effects of those herbal medicines; the cellular and animal model of depression; and the development of novel drug delivery systems for herbal antidepressants. Finally, we objectively elaborate on the challenges of using herbal medicines as antidepressants and describe the benefits, adverse effects, and toxicity of these medicines.
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Affiliation(s)
- Siqi Peng
- Institute of Chinese Materia Medica, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Yalan Zhou
- Institute of Chinese Materia Medica, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Meng Lu
- Institute of Chinese Materia Medica, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Qingzhong Wang
- Institute of Chinese Materia Medica, Shanghai University of Traditional Chinese Medicine, Shanghai, China
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2
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Choi HJ, Chen TX, Hou MJ, Song JH, Li P, Liu CF, Wang P, Zhu BT. Protection against glutathione depletion-associated oxidative neuronal death by neurotransmitters norepinephrine and dopamine: Protein disulfide isomerase as a mechanistic target for neuroprotection. Acta Pharmacol Sin 2022; 43:2527-2541. [PMID: 35347247 PMCID: PMC9525605 DOI: 10.1038/s41401-022-00891-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2020] [Accepted: 02/17/2022] [Indexed: 12/11/2022] Open
Abstract
Oxidative stress is extensively involved in neurodegeneration. Clinical evidence shows that keeping the mind active through mentally-stimulating physical activities can effectively slow down the progression of neurodegeneration. With increased physical activities, more neurotransmitters would be released in the brain. In the present study, we investigated whether some of the released neurotransmitters might have a beneficial effect against oxidative neurodegeneration in vitro. Glutamate-induced, glutathione depletion-associated oxidative cytotoxicity in HT22 mouse hippocampal neuronal cells was used as an experimental model. We showed that norepinephrine (NE, 50 µM) or dopamine (DA, 50 µM) exerted potent protective effect against glutamate-induced cytotoxicity, but this effect was not observed when other neurotransmitters such as histamine, γ-aminobutyric acid, serotonin, glycine and acetylcholine were tested. In glutamate-treated HT22 cells, both NE and DA significantly suppressed glutathione depletion-associated mitochondrial dysfunction including mitochondrial superoxide accumulation, ATP depletion and mitochondrial AIF release. Moreover, both NE and DA inhibited glutathione depletion-associated MAPKs activation, p53 phosphorylation and GADD45α activation. Molecular docking analysis revealed that NE and DA could bind to protein disulfide isomerase (PDI). In biochemical enzymatic assay in vitro, NE and DA dose-dependently inhibited the reductive activity of PDI. We further revealed that the protective effect of NE and DA against glutamate-induced oxidative cytotoxicity was mediated through inhibition of PDI-catalyzed dimerization of the neuronal nitric oxide synthase. Collectively, the results of this study suggest that NE and DA may have a protective effect against oxidative neurodegeneration through inhibition of protein disulfide isomerase and the subsequent activation of the MAPKs‒p53‒GADD45α oxidative cascade.
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Affiliation(s)
- Hye Joung Choi
- Shenzhen Key Laboratory of Steroid Drug Discovery and Development, School of Medicine, The Chinese University of Hong Kong, Shenzhen, 518172, China
- Department of Pharmacology, Toxicology and Therapeutics, School of Medicine, University of Kansas Medical Center, Kansas City, KS, 66160, USA
| | - Tong-Xiang Chen
- Shenzhen Key Laboratory of Steroid Drug Discovery and Development, School of Medicine, The Chinese University of Hong Kong, Shenzhen, 518172, China
| | - Ming-Jie Hou
- Shenzhen Key Laboratory of Steroid Drug Discovery and Development, School of Medicine, The Chinese University of Hong Kong, Shenzhen, 518172, China
| | - Ji Hoon Song
- Department of Pharmacology, Toxicology and Therapeutics, School of Medicine, University of Kansas Medical Center, Kansas City, KS, 66160, USA
| | - Peng Li
- Shenzhen Key Laboratory of Steroid Drug Discovery and Development, School of Medicine, The Chinese University of Hong Kong, Shenzhen, 518172, China
| | - Chun-Feng Liu
- Institute of Neuroscience, Soochow University, and Department of Neurology, Second Affiliated Hospital of Soochow University, Suzhou, 215004, China
| | - Pan Wang
- Shenzhen Key Laboratory of Steroid Drug Discovery and Development, School of Medicine, The Chinese University of Hong Kong, Shenzhen, 518172, China
| | - Bao Ting Zhu
- Shenzhen Key Laboratory of Steroid Drug Discovery and Development, School of Medicine, The Chinese University of Hong Kong, Shenzhen, 518172, China.
- Department of Pharmacology, Toxicology and Therapeutics, School of Medicine, University of Kansas Medical Center, Kansas City, KS, 66160, USA.
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3
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Liu Y, He L, Liu B, Ying Y, Xu J, Yu M, Dang J, Liu K. Pharmacological inhibition of sphingolipid synthesis reduces ferroptosis by stimulating the HIF-1 pathway. iScience 2022; 25:104533. [PMID: 35784791 PMCID: PMC9240796 DOI: 10.1016/j.isci.2022.104533] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2021] [Revised: 03/04/2022] [Accepted: 06/01/2022] [Indexed: 02/07/2023] Open
Affiliation(s)
- Yang Liu
- Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu 610065 Sichuan, P.R.China
| | - Libo He
- Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu 610065 Sichuan, P.R.China
| | - Binghua Liu
- Laboratory of Molecular Biology, College of Medicine, Chengdu University, Chengdu 610106 Sichuan, P. R. China
| | - Yuling Ying
- Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu 610065 Sichuan, P.R.China
| | - Junling Xu
- Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu 610065 Sichuan, P.R.China
| | - Meng Yu
- Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu 610065 Sichuan, P.R.China
| | - Jinye Dang
- Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu 610065 Sichuan, P.R.China
| | - Ke Liu
- Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu 610065 Sichuan, P.R.China
- Corresponding author
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4
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Wang F, Wang Q, Liu B, Mei L, Ma S, Wang S, Wang R, Zhang Y, Niu C, Xiong Z, Zheng Y, Zhang Z, Shi J, Song X. The long noncoding RNA Synage regulates synapse stability and neuronal function in the cerebellum. Cell Death Differ 2021; 28:2634-2650. [PMID: 33762741 PMCID: PMC8408218 DOI: 10.1038/s41418-021-00774-3] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2020] [Revised: 03/07/2021] [Accepted: 03/10/2021] [Indexed: 02/01/2023] Open
Abstract
The brain is known to express many long noncoding RNAs (lncRNAs); however, whether and how these lncRNAs function in modulating synaptic stability remains unclear. Here, we report a cerebellum highly expressed lncRNA, Synage, regulating synaptic stability via at least two mechanisms. One is through the function of Synage as a sponge for the microRNA miR-325-3p, to regulate expression of the known cerebellar synapse organizer Cbln1. The other function is to serve as a scaffold for organizing the assembly of the LRP1-HSP90AA1-PSD-95 complex in PF-PC synapses. Although somewhat divergent in its mature mRNA sequence, the locus encoding Synage is positioned adjacent to the Cbln1 loci in mouse, rhesus macaque, and human, and Synage is highly expressed in the cerebella of all three species. Synage deletion causes a full-spectrum cerebellar ablation phenotype that proceeds from cerebellar atrophy, through neuron loss, on to synapse density reduction, synaptic vesicle loss, and finally to a reduction in synaptic activity during cerebellar development; these deficits are accompanied by motor dysfunction in adult mice, which can be rescued by AAV-mediated Synage overexpression from birth. Thus, our study demonstrates roles for the lncRNA Synage in regulating synaptic stability and function during cerebellar development.
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Affiliation(s)
- Fei Wang
- grid.59053.3a0000000121679639Hefei National Laboratory for Physical Sciences at the Microscale, CAS Key Laboratory of Brain Function and Disease, School of Life Sciences, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, Anhui China
| | - Qianqian Wang
- grid.59053.3a0000000121679639Hefei National Laboratory for Physical Sciences at the Microscale, CAS Key Laboratory of Brain Function and Disease, School of Life Sciences, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, Anhui China
| | - Baowei Liu
- grid.59053.3a0000000121679639Hefei National Laboratory for Physical Sciences at the Microscale, CAS Key Laboratory of Brain Function and Disease, School of Life Sciences, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, Anhui China
| | - Lisheng Mei
- grid.59053.3a0000000121679639Hefei National Laboratory for Physical Sciences at the Microscale, CAS Key Laboratory of Brain Function and Disease, School of Life Sciences, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, Anhui China
| | - Sisi Ma
- grid.506261.60000 0001 0706 7839National Laboratory of Medical Molecular Biology, Institute of Basic Medical Sciences, CAMS and PUMC, Beijing, China
| | - Shujuan Wang
- grid.419611.a0000 0004 0457 9072State Key Laboratory of Proteomics, Beijing Proteome Research Center, National Center for Protein Sciences (Beijing), Beijing Institute of Lifeomics, Beijing, China
| | - Ruoyu Wang
- grid.59053.3a0000000121679639Hefei National Laboratory for Physical Sciences at the Microscale, CAS Key Laboratory of Brain Function and Disease, School of Life Sciences, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, Anhui China ,grid.240145.60000 0001 2291 4776Graduate School of Biomedical Sciences, University of Texas MD Anderson Cancer Center and UTHealth, Houston, TX USA
| | - Yan Zhang
- grid.59053.3a0000000121679639Stroke Center & Department of Neurology, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, Anhui China
| | - Chaoshi Niu
- grid.59053.3a0000000121679639Department of Neurosurgery, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, Anhui China
| | - Zhiqi Xiong
- grid.9227.e0000000119573309Institute of Neuroscience, State Key Laboratory of Neuroscience, CAS Center for Excellence in Brain Science and Intelligence Technology, Chinese Academy of Sciences, Shanghai, China
| | - Yong Zheng
- grid.419611.a0000 0004 0457 9072State Key Laboratory of Proteomics, Beijing Proteome Research Center, National Center for Protein Sciences (Beijing), Beijing Institute of Lifeomics, Beijing, China
| | - Zhi Zhang
- grid.59053.3a0000000121679639Hefei National Laboratory for Physical Sciences at the Microscale, CAS Key Laboratory of Brain Function and Disease, School of Life Sciences, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, Anhui China
| | - Juan Shi
- grid.506261.60000 0001 0706 7839National Laboratory of Medical Molecular Biology, Institute of Basic Medical Sciences, CAMS and PUMC, Beijing, China
| | - Xiaoyuan Song
- grid.59053.3a0000000121679639MOE Key Laboratory for Membraneless Organelles and Cellular Dynamics, Hefei National Laboratory for Physical Sciences at the Microscale, CAS Key Laboratory of Brain Function and Disease, School of Life Sciences, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, China
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Liang Z, Currais A, Soriano-Castell D, Schubert D, Maher P. Natural products targeting mitochondria: emerging therapeutics for age-associated neurological disorders. Pharmacol Ther 2021; 221:107749. [PMID: 33227325 PMCID: PMC8084865 DOI: 10.1016/j.pharmthera.2020.107749] [Citation(s) in RCA: 32] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2020] [Revised: 11/16/2020] [Accepted: 11/17/2020] [Indexed: 12/17/2022]
Abstract
Mitochondria are the primary source of energy production in the brain thereby supporting most of its activity. However, mitochondria become inefficient and dysfunctional with age and to a greater extent in neurological disorders. Thus, mitochondria represent an emerging drug target for many age-associated neurological disorders. This review summarizes recent advances (covering from 2010 to May 2020) in the use of natural products from plant, animal, and microbial sources as potential neuroprotective agents to restore mitochondrial function. Natural products from diverse classes of chemical structures are discussed and organized according to their mechanism of action on mitochondria in terms of modulation of biogenesis, dynamics, bioenergetics, calcium homeostasis, and membrane potential, as well as inhibition of the oxytosis/ferroptosis pathway. This analysis emphasizes the significant value of natural products for mitochondrial pharmacology as well as the opportunities and challenges for the discovery and development of future neurotherapeutics.
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Affiliation(s)
- Zhibin Liang
- Cellular Neurobiology Laboratory, The Salk Institute for Biological Studies, 10010 North Torrey Pines Road, La Jolla, California 92037, United States; The Paul F. Glenn Center for Biology of Aging Research, The Salk Institute for Biological Studies, 10010 North Torrey Pines Road, La Jolla, California 92037, United States.
| | - Antonio Currais
- Cellular Neurobiology Laboratory, The Salk Institute for Biological Studies, 10010 North Torrey Pines Road, La Jolla, California 92037, United States
| | - David Soriano-Castell
- Cellular Neurobiology Laboratory, The Salk Institute for Biological Studies, 10010 North Torrey Pines Road, La Jolla, California 92037, United States
| | - David Schubert
- Cellular Neurobiology Laboratory, The Salk Institute for Biological Studies, 10010 North Torrey Pines Road, La Jolla, California 92037, United States; The Paul F. Glenn Center for Biology of Aging Research, The Salk Institute for Biological Studies, 10010 North Torrey Pines Road, La Jolla, California 92037, United States
| | - Pamela Maher
- Cellular Neurobiology Laboratory, The Salk Institute for Biological Studies, 10010 North Torrey Pines Road, La Jolla, California 92037, United States.
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6
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Akyuz E, Kullu I, Arulsamy A, Shaikh MF. Melatonin as an Antiepileptic Molecule: Therapeutic Implications via Neuroprotective and Inflammatory Mechanisms. ACS Chem Neurosci 2021; 12:1281-1292. [PMID: 33813829 DOI: 10.1021/acschemneuro.1c00083] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
Epilepsy is a result of unprovoked, uncontrollable, and repetitive outburst of abnormal and excessive electrical discharges, known as seizures, in the neurons. Epilepsy is a devastating neurological condition that affects 70 million people globally. Unfortunately, only two-thirds of epilepsy patients respond to antiepileptic drugs while others become drug resistant and may be more prone to epilepsy comorbidities such as SUDEP. Oxidative stress, mitochondrial dysfunction, imbalance in the excitatory and inhibitory neurotransmitters, and neuroinflammation are some of the common pathologies of neurological disorders and epilepsy. Studies suggests that melatonin, a pineal hormone that governs sleep-wake cycles, may be neuroprotective against neurological disorders and thus may be translated as an antiepileptic as well. Melatonin has been shown to be an antioxidant, antiexcitotoxic, and anti-inflammatory hormone/molecule in neurodegenerative diseases, which may contribute to its antiepileptic and neuroprotective properties in epilepsy as well. In addition, melatonin has evidently been shown to play a regulatory role in the cardiorespiratory system and sleep-wake cycles, which may have positive implications toward epilepsy associated comorbidities, such as SUDEP. However, studies investigating the changes in melatonin release due to epilepsy and melatonin's antiepileptic role have been inconclusive and scarce, respectively. Thus, this comprehensive review aims to summarize and elucidate the potential role of melatonin in the pathogenesis of epilepsy and its comorbidities, in hopes to develop new diagnostic and therapeutic approaches that will improve the lives of epileptic patients, particularly those who are drug resistant.
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Affiliation(s)
- Enes Akyuz
- University of Health Sciences, International Medicine Faculty, Department of Biophysics, Istanbul, Turkey
| | - Irem Kullu
- Medical School, Yozgat Bozok University, 66100 Yozgat, Turkey
| | - Alina Arulsamy
- Neuropharmacology Research Laboratory, Jeffrey Cheah School of Medicine and Health Sciences, Monash University Malaysia, 47500 Selangor, Malaysia
| | - Mohd. Farooq Shaikh
- Neuropharmacology Research Laboratory, Jeffrey Cheah School of Medicine and Health Sciences, Monash University Malaysia, 47500 Selangor, Malaysia
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7
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Role of Melatonin on Virus-Induced Neuropathogenesis-A Concomitant Therapeutic Strategy to Understand SARS-CoV-2 Infection. Antioxidants (Basel) 2021; 10:antiox10010047. [PMID: 33401749 PMCID: PMC7823793 DOI: 10.3390/antiox10010047] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2020] [Revised: 12/23/2020] [Accepted: 12/29/2020] [Indexed: 12/12/2022] Open
Abstract
Viral infections may cause neurological disorders by directly inducing oxidative stress and interrupting immune system function, both of which contribute to neuronal death. Several reports have described the neurological manifestations in Covid-19 patients where, in severe cases of the infection, brain inflammation and encephalitis are common. Recently, extensive research-based studies have revealed and acknowledged the clinical and preventive roles of melatonin in some viral diseases. Melatonin has been shown to have antiviral properties against several viral infections which are accompanied by neurological symptoms. The beneficial properties of melatonin relate to its properties as a potent antioxidant, anti-inflammatory, and immunoregulatory molecule and its neuroprotective effects. In this review, what is known about the therapeutic role of melatonin in virus-induced neuropathogenesis is summarized and discussed.
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Antioxidants Targeting Mitochondrial Oxidative Stress: Promising Neuroprotectants for Epilepsy. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2020; 2020:6687185. [PMID: 33299529 PMCID: PMC7710440 DOI: 10.1155/2020/6687185] [Citation(s) in RCA: 73] [Impact Index Per Article: 18.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/25/2020] [Revised: 11/13/2020] [Accepted: 11/16/2020] [Indexed: 12/14/2022]
Abstract
Mitochondria are major sources of reactive oxygen species (ROS) within the cell and are especially vulnerable to oxidative stress. Oxidative damage to mitochondria results in disrupted mitochondrial function and cell death signaling, finally triggering diverse pathologies such as epilepsy, a common neurological disease characterized with aberrant electrical brain activity. Antioxidants are considered as promising neuroprotective strategies for epileptic condition via combating the deleterious effects of excessive ROS production in mitochondria. In this review, we provide a brief discussion of the role of mitochondrial oxidative stress in the pathophysiology of epilepsy and evidences that support neuroprotective roles of antioxidants targeting mitochondrial oxidative stress including mitochondria-targeted antioxidants, polyphenols, vitamins, thiols, and nuclear factor E2-related factor 2 (Nrf2) activators in epilepsy. We point out these antioxidative compounds as effectively protective approaches for improving prognosis. In addition, we specially propose that these antioxidants exert neuroprotection against epileptic impairment possibly by modulating cell death interactions, notably autophagy-apoptosis, and autophagy-ferroptosis crosstalk.
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Khan S, Khurana M, Vyas P, Vohora D. The role of melatonin and its analogues in epilepsy. Rev Neurosci 2020; 32:/j/revneuro.ahead-of-print/revneuro-2019-0088/revneuro-2019-0088.xml. [PMID: 32950966 DOI: 10.1515/revneuro-2019-0088] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2019] [Accepted: 04/01/2020] [Indexed: 12/31/2022]
Abstract
Extensive research has gone into proposing a promising link between melatonin administration and attenuation of epileptic activity, the majority of which suggest its propensity as an antiseizure with antioxidant and neuroprotective properties. In the past few years, a number of studies highlighting the association of the melatonergic ligands with epilepsy have also emerged. In this context, our review is based on discussing the recent studies and various mechanisms of action that the said category of drugs exhibit in the context of being therapeutically viable antiseizure drugs. Our search revealed several articles on the four major drugs i.e. melatonin, agomelatine, ramelteon and piromelatine along with other melatonergic agonists like tasimelteon and TIK-301. Our review is suggestive of antiseizure effects of both melatonin and its analogues; however, extensive research work is still required to study their implications in the treatment of persons with epilepsy. Further evaluation of melatonergic signaling pathways and mechanisms may prove to be helpful in the near future and might prove to be a significant advance in the field of epileptology.
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Affiliation(s)
- Sumaira Khan
- Department of Pharmacology, School of Pharmaceutical Education and Research, Jamia Hamdard, New Delhi 110062, India
| | - Mallika Khurana
- Department of Pharmacology, School of Pharmaceutical Education and Research, Jamia Hamdard, New Delhi 110062, India
| | - Preeti Vyas
- Department of Pharmacology, School of Pharmaceutical Education and Research, Jamia Hamdard, New Delhi 110062, India
| | - Divya Vohora
- Department of Pharmacology, School of Pharmaceutical Education and Research, Jamia Hamdard, New Delhi 110062, India
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10
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Bueno DC, Canto RFS, de Souza V, Andreguetti RR, Barbosa FAR, Naime AA, Dey PN, Wüllner V, Lopes MW, Braga AL, Methner A, Farina M. New Probucol Analogues Inhibit Ferroptosis, Improve Mitochondrial Parameters, and Induce Glutathione Peroxidase in HT22 Cells. Mol Neurobiol 2020; 57:3273-3290. [DOI: 10.1007/s12035-020-01956-9] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2020] [Accepted: 05/26/2020] [Indexed: 02/06/2023]
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Takashima M, Ichihara K, Hirata Y. Neuroprotective effects of Brazilian green propolis on oxytosis/ferroptosis in mouse hippocampal HT22 cells. Food Chem Toxicol 2019; 132:110669. [PMID: 31299294 DOI: 10.1016/j.fct.2019.110669] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2019] [Revised: 06/27/2019] [Accepted: 07/09/2019] [Indexed: 02/05/2023]
Abstract
Propolis is a sticky dark-colored substance produced by honey bees and comprises resin, balsam, wax, essential and aromatic oils, pollen, and several other substances; it is used in food and beverages to improve health and prevent diseases. We studied the neuroprotective effects of extracts of Brazilian green propolis in the mouse hippocampal cell line HT22. Ethanol extracts of Brazilian green propolis had a more potent preventive effect on oxidative stress-induced cell death, oxytosis/ferroptosis, in HT22 cells than water extracts of Brazilian green propolis, whereas it did not protect against anticancer drug-induced apoptotic cell death. Among the primary constituents of ethanol extracts of Brazilian green propolis, only artepillin C, kaempferide, and kaempferol demonstrated neuroprotective effects against oxytosis/ferroptosis. The flavonoid derivatives kaempferide and kaempferol are antioxidants with radical-scavenging abilities that additionally induce antioxidant response element-mediated transcriptional activity, suggesting that upregulation of endogenous antioxidant defense protects against oxidative stress. In contrast, artepillin C attenuated reactive oxygen species production; however, it did not induce antioxidant response element activation. These findings indicate that the ethanol extracts of Brazilian green propolis help to prevent oxidative stress-related neuronal cell death that is involved in the pathogenesis of several neurodegenerative diseases.
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Affiliation(s)
- Madoka Takashima
- United Graduate School of Drug Discovery and Medical Information Sciences, Gifu University, Gifu, Japan; NAGARAGAWA Research Center, API Co., Ltd, Gifu, Japan.
| | | | - Yoko Hirata
- United Graduate School of Drug Discovery and Medical Information Sciences, Gifu University, Gifu, Japan; Department of Chemistry and Biomolecular Science, Faculty of Engineering, Gifu University, Gifu, Japan.
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Wang DD, Jin MF, Zhao DJ, Ni H. Reduction of Mitophagy-Related Oxidative Stress and Preservation of Mitochondria Function Using Melatonin Therapy in an HT22 Hippocampal Neuronal Cell Model of Glutamate-Induced Excitotoxicity. Front Endocrinol (Lausanne) 2019; 10:550. [PMID: 31440210 PMCID: PMC6694460 DOI: 10.3389/fendo.2019.00550] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/07/2019] [Accepted: 07/23/2019] [Indexed: 12/26/2022] Open
Abstract
Recent evidence indicates that autophagy-mediated mitochondrial homeostasis is crucial for oxidative stress-related brain damage and repair. The highest concentration of melatonin is in the mitochondria of cells, and melatonin exhibits well-known antioxidant properties. We investigated the impact and mechanism involved in mitochondrial function and the mitochondrial oxidative stress/autophagy regulator parameters of glutamate cytotoxicity in mouse HT22 hippocampal neurons. We tested the hypothesis that melatonin confers neuroprotective effects via protecting against mitochondrial impairment and mitophagy. Cells were divided into four groups: the control group, melatonin alone group, glutamate injury group, and melatonin pretreatment group. We found that glutamate induced significant changes in mitochondrial function/oxidative stress-related parameters. Leptin administration preserved mitochondrial function, and this effect was associated with increased superoxide dismutase, glutathione (GSH), and mitochondrial membrane potential and decreased GSSG (oxidized glutathione) and mitochondrial reactive oxygen species. Melatonin significantly reduced the fluorescence intensity of mitophagy via the Beclin-1/Bcl-2 pathway, which involves Beclin-1 and Bcl-2 proteins. The mitophagy inhibitor CsA corrected these glutamate-induce changes, as measured by the fluorescence intensity of Mitophagy-Tracker Red CMXROS, mitochondrial ROS, and mitochondrial membrane potential changes. These findings indicate that melatonin exerts neuroprotective effects against glutamate-induced excitotoxicity by reducing mitophagy-related oxidative stress and maintaining mitochondrial function.
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13
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Cesarini E, Cerioni L, Canonico B, Di Sario G, Guidarelli A, Lattanzi D, Savelli D, Guescini M, Nasoni MG, Bigini N, Cuppini R, Stocchi V, Ambrogini P, Papa S, Luchetti F. Melatonin protects hippocampal HT22 cells from the effects of serum deprivation specifically targeting mitochondria. PLoS One 2018; 13:e0203001. [PMID: 30157259 PMCID: PMC6114848 DOI: 10.1371/journal.pone.0203001] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2018] [Accepted: 08/13/2018] [Indexed: 02/07/2023] Open
Abstract
Neurons contain a high number of mitochondria, these neuronal cells produce elevated levels of oxidative stress and live for a long time without proliferation; therefore, mitochondrial homeostasis is crucial to their health. Investigations have recently focused on mitochondrial dynamics revealing the ability of these organelles to change their distribution and morphology. It is known that mitochondrial fission is necessary for the transmission of mitochondria to daughter cells during mitosis and mitochondrial fragmentation has been used as an indicator of cell death and mitochondrial dysfunction. Oxidative stress is a trigger able to induce changes in the mitochondrial network. The aim of the present study was to determine the effects of melatonin on the mitochondrial network in HT22 serum-deprived cells. Our results showed that serum deprivation increased reactive oxygen species (ROS) content, promoted the activation of plasma membrane voltage-dependent anion channels (VDACs) and affected the expression of pDRP1 and DRP1 fission proteins. Moreover, parallel increases in apoptotic and autophagic features were found. Damaged and dysfunctional mitochondria are deleterious to the cell; hence, the degradation of such mitochondria through mitophagy is crucial to cell survival. Our results suggest that melatonin supplementation reduces cell death and restores mitochondrial function through the regulation of autophagy.
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Affiliation(s)
- Erica Cesarini
- Department of Biomolecular Sciences, University of Urbino Carlo Bo, Urbino, Italy
| | - Liana Cerioni
- Department of Biomolecular Sciences, University of Urbino Carlo Bo, Urbino, Italy
| | - Barbara Canonico
- Department of Biomolecular Sciences, University of Urbino Carlo Bo, Urbino, Italy
| | - Gianna Di Sario
- Department of Biomolecular Sciences, University of Urbino Carlo Bo, Urbino, Italy
| | - Andrea Guidarelli
- Department of Biomolecular Sciences, University of Urbino Carlo Bo, Urbino, Italy
| | - Davide Lattanzi
- Department of Biomolecular Sciences, University of Urbino Carlo Bo, Urbino, Italy
| | - David Savelli
- Department of Biomolecular Sciences, University of Urbino Carlo Bo, Urbino, Italy
| | - Michele Guescini
- Department of Biomolecular Sciences, University of Urbino Carlo Bo, Urbino, Italy
| | - Maria Gemma Nasoni
- Department of Biomolecular Sciences, University of Urbino Carlo Bo, Urbino, Italy
| | - Noemi Bigini
- Department of Biomolecular Sciences, University of Urbino Carlo Bo, Urbino, Italy
| | - Riccardo Cuppini
- Department of Biomolecular Sciences, University of Urbino Carlo Bo, Urbino, Italy
| | - Vilberto Stocchi
- Department of Biomolecular Sciences, University of Urbino Carlo Bo, Urbino, Italy
| | - Patrizia Ambrogini
- Department of Biomolecular Sciences, University of Urbino Carlo Bo, Urbino, Italy
| | - Stefano Papa
- Department of Biomolecular Sciences, University of Urbino Carlo Bo, Urbino, Italy
| | - Francesca Luchetti
- Department of Biomolecular Sciences, University of Urbino Carlo Bo, Urbino, Italy
- * E-mail:
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14
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Novel oxindole derivatives prevent oxidative stress-induced cell death in mouse hippocampal HT22 cells. Neuropharmacology 2018; 135:242-252. [DOI: 10.1016/j.neuropharm.2018.03.015] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2017] [Revised: 02/16/2018] [Accepted: 03/14/2018] [Indexed: 01/18/2023]
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15
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Sanderson TH, Wider JM, Lee I, Reynolds CA, Liu J, Lepore B, Tousignant R, Bukowski MJ, Johnston H, Fite A, Raghunayakula S, Kamholz J, Grossman LI, Przyklenk K, Hüttemann M. Inhibitory modulation of cytochrome c oxidase activity with specific near-infrared light wavelengths attenuates brain ischemia/reperfusion injury. Sci Rep 2018; 8:3481. [PMID: 29472564 PMCID: PMC5823933 DOI: 10.1038/s41598-018-21869-x] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2017] [Accepted: 02/13/2018] [Indexed: 12/17/2022] Open
Abstract
The interaction of light with biological tissue has been successfully utilized for multiple therapeutic purposes. Previous studies have suggested that near infrared light (NIR) enhances the activity of mitochondria by increasing cytochrome c oxidase (COX) activity, which we confirmed for 810 nm NIR. In contrast, scanning the NIR spectrum between 700 nm and 1000 nm revealed two NIR wavelengths (750 nm and 950 nm) that reduced the activity of isolated COX. COX-inhibitory wavelengths reduced mitochondrial respiration, reduced the mitochondrial membrane potential (ΔΨm), attenuated mitochondrial superoxide production, and attenuated neuronal death following oxygen glucose deprivation, whereas NIR that activates COX provided no benefit. We evaluated COX-inhibitory NIR as a potential therapy for cerebral reperfusion injury using a rat model of global brain ischemia. Untreated animals demonstrated an 86% loss of neurons in the CA1 hippocampus post-reperfusion whereas inhibitory NIR groups were robustly protected, with neuronal loss ranging from 11% to 35%. Moreover, neurologic function, assessed by radial arm maze performance, was preserved at control levels in rats treated with a combination of both COX-inhibitory NIR wavelengths. Taken together, our data suggest that COX-inhibitory NIR may be a viable non-pharmacologic and noninvasive therapy for the treatment of cerebral reperfusion injury.
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Affiliation(s)
- Thomas H Sanderson
- Department of Emergency Medicine, Wayne State University School of Medicine, Detroit, MI, 48201, USA. .,Department of Emergency Medicine, University of Michigan Medical School, Ann Arbor, MI, 48109, USA. .,Department of Molecular and Integrative Physiology, University of Michigan Medical School, Ann Arbor, MI, 48109, USA. .,Cardiovascular Research Institute, Wayne State University School of Medicine, Detroit, MI, 48201, USA.
| | - Joseph M Wider
- Department of Emergency Medicine, University of Michigan Medical School, Ann Arbor, MI, 48109, USA.,Cardiovascular Research Institute, Wayne State University School of Medicine, Detroit, MI, 48201, USA.,Department of Physiology, Wayne State University School of Medicine, Detroit, MI, 48201, USA
| | - Icksoo Lee
- Center for Molecular Medicine and Genetics, Wayne State University School of Medicine, Detroit, MI, 48201, USA.,College of Medicine, Dankook University, Cheonan-si, Chungcheongnam-do, 31116, Republic of Korea
| | - Christian A Reynolds
- Department of Emergency Medicine, Wayne State University School of Medicine, Detroit, MI, 48201, USA.,Cardiovascular Research Institute, Wayne State University School of Medicine, Detroit, MI, 48201, USA.,Department of Physiology, Wayne State University School of Medicine, Detroit, MI, 48201, USA
| | - Jenney Liu
- Center for Molecular Medicine and Genetics, Wayne State University School of Medicine, Detroit, MI, 48201, USA
| | - Bradley Lepore
- Department of Emergency Medicine, Wayne State University School of Medicine, Detroit, MI, 48201, USA
| | - Reneé Tousignant
- Department of Emergency Medicine, Wayne State University School of Medicine, Detroit, MI, 48201, USA
| | - Melissa J Bukowski
- Department of Emergency Medicine, Wayne State University School of Medicine, Detroit, MI, 48201, USA.,Department of Physiology, Wayne State University School of Medicine, Detroit, MI, 48201, USA
| | - Hollie Johnston
- Center for Molecular Medicine and Genetics, Wayne State University School of Medicine, Detroit, MI, 48201, USA
| | - Alemu Fite
- Center for Molecular Medicine and Genetics, Wayne State University School of Medicine, Detroit, MI, 48201, USA
| | - Sarita Raghunayakula
- Department of Emergency Medicine, Wayne State University School of Medicine, Detroit, MI, 48201, USA.,Department of Emergency Medicine, University of Michigan Medical School, Ann Arbor, MI, 48109, USA
| | - John Kamholz
- Center for Molecular Medicine and Genetics, Wayne State University School of Medicine, Detroit, MI, 48201, USA
| | - Lawrence I Grossman
- Cardiovascular Research Institute, Wayne State University School of Medicine, Detroit, MI, 48201, USA.,Center for Molecular Medicine and Genetics, Wayne State University School of Medicine, Detroit, MI, 48201, USA
| | - Karin Przyklenk
- Department of Emergency Medicine, Wayne State University School of Medicine, Detroit, MI, 48201, USA.,Cardiovascular Research Institute, Wayne State University School of Medicine, Detroit, MI, 48201, USA.,Department of Physiology, Wayne State University School of Medicine, Detroit, MI, 48201, USA
| | - Maik Hüttemann
- Cardiovascular Research Institute, Wayne State University School of Medicine, Detroit, MI, 48201, USA. .,Center for Molecular Medicine and Genetics, Wayne State University School of Medicine, Detroit, MI, 48201, USA.
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16
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Protein Glutathionylation in the Pathogenesis of Neurodegenerative Diseases. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2017; 2017:2818565. [PMID: 29456785 PMCID: PMC5804111 DOI: 10.1155/2017/2818565] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/22/2017] [Revised: 11/27/2017] [Accepted: 12/05/2017] [Indexed: 12/13/2022]
Abstract
Protein glutathionylation is a redox-mediated posttranslational modification that regulates the function of target proteins by conjugating glutathione with a cysteine thiol group on the target proteins. Protein glutathionylation has several biological functions such as regulation of metabolic pathways, calcium homeostasis, signal transduction, remodeling of cytoskeleton, inflammation, and protein folding. However, the exact role and mechanism of glutathionylation during irreversible oxidative stress has not been completely defined. Irreversible oxidative damage is implicated in a number of neurological disorders. Here, we discuss and highlight the most recent findings and several evidences for the association of glutathionylation with neurodegenerative diseases and the role of glutathionylation of specific proteins in the pathogenesis of neurodegenerative diseases. Understanding the important role of glutathionylation in the pathogenesis of neurodegenerative diseases may provide insights into novel therapeutic interventions.
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17
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Song X, Fiati Kenston SS, Kong L, Zhao J. Molecular mechanisms of nickel induced neurotoxicity and chemoprevention. Toxicology 2017; 392:47-54. [PMID: 29032222 DOI: 10.1016/j.tox.2017.10.006] [Citation(s) in RCA: 65] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2017] [Revised: 10/08/2017] [Accepted: 10/10/2017] [Indexed: 01/05/2023]
Abstract
Nickel (Ni) is widely used in many industrial sectors such as alloy, welding, printing inks, electrical and electronics industries. Excessive environmental or occupational exposure to Ni may result in tumor, contact dermatitis, as well as damages to the nervous system. In recent years, more and more research has demonstrated that Ni induced nerve damages are related to mitochondrial dysfunction. In this paper, we try to characterize Ni induced neurotoxicity as well as the underlying mechanisms, and how to find new drugs for chemoprevention, by reviewing chemicals with neuroprotective effects on Ni induced neurotoxicity.
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Affiliation(s)
- Xin Song
- Department of Preventative Medicine, Zhejiang Key Laboratory of Pathophysiology, Medicine School of Ningbo University, 818 Fenghua Road, Ningbo, Zhejiang Province, 315211, People's Republic of China
| | - Samuel Selorm Fiati Kenston
- Department of Preventative Medicine, Zhejiang Key Laboratory of Pathophysiology, Medicine School of Ningbo University, 818 Fenghua Road, Ningbo, Zhejiang Province, 315211, People's Republic of China
| | - Lu Kong
- Key Laboratory of Environmental Medicine Engineering, Ministry of Education, School of Public Health, Southeast University, Nanjing, 210009, Jiangsu, People's Republic of China
| | - Jinshun Zhao
- Department of Preventative Medicine, Zhejiang Key Laboratory of Pathophysiology, Medicine School of Ningbo University, 818 Fenghua Road, Ningbo, Zhejiang Province, 315211, People's Republic of China.
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18
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Goswami P, Joshi N, Singh S. Neurodegenerative signaling factors and mechanisms in Parkinson's pathology. Toxicol In Vitro 2017. [PMID: 28627426 DOI: 10.1016/j.tiv.2017.06.008] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Parkinson's disease (PD) is a chronic and progressive degenerative disorder of central nervous system which is mainly characterized by selective loss of dopaminergic neurons in the nigrostrial pathway. Clinical symptoms of this devastating disease comprise motor impairments such as resting tremor, bradykinesia, postural instability and rigidity. Current medications only provide symptomatic relief but fail to halt the dopaminergic neuronal death. While the etiology of dopaminergic neuronal death is not fully understood, combination of various molecular mechanisms seems to play a critical role. Studies from experimental animal models have provided crucial insights into the molecular mechanisms in disease pathogenesis and recognized possible targets for therapeutic interventions. Recent findings implicate the involvement of abnormal protein accumulation and phosphorylation, mitochondrial dysfunction, oxidative damage and deregulated kinase signaling as key molecular mechanisms affecting the normal function as well survival of dopaminergic neurons. Here we discuss the relevant findings on the PD pathology related mechanisms and recognition of the cell survival mechanisms which could be used as targets for neuroprotective strategies in preventing this devastating disorder.
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Affiliation(s)
- Poonam Goswami
- Neuronal Cell Death Mechanisms Laboratory, Toxicology Division, CSIR-Central Drug Research Institute, Lucknow, 226031, Uttar Pradesh, India
| | - Neeraj Joshi
- Department of Biochemistry and Biophysics, Helen Diller Comprehensive Cancer Center, University of California San Francisco, USA
| | - Sarika Singh
- Neuronal Cell Death Mechanisms Laboratory, Toxicology Division, CSIR-Central Drug Research Institute, Lucknow, 226031, Uttar Pradesh, India.
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19
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Su D, Cheng Y, Li S, Dai D, Zhang W, Lv M. Sphk1 mediates neuroinflammation and neuronal injury via TRAF2/NF-κB pathways in activated microglia in cerebral ischemia reperfusion. J Neuroimmunol 2017; 305:35-41. [DOI: 10.1016/j.jneuroim.2017.01.015] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2016] [Revised: 01/22/2017] [Accepted: 01/23/2017] [Indexed: 01/08/2023]
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20
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Long F, Dong C, Jiang K, Xu Y, Chi X, Sun D, Liang R, Gao Z, Shao S, Wang L. Melatonin enhances the anti-tumor effect of sorafenib via AKT/p27-mediated cell cycle arrest in hepatocarcinoma cell lines. RSC Adv 2017. [DOI: 10.1039/c7ra02113e] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Proposed model elucidating the role of MT in regulating the proliferation of hepatocellular carcinoma (HCC) cells treated with sorafenib.
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21
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Letra-Vilela R, Sánchez-Sánchez AM, Rocha AM, Martin V, Branco-Santos J, Puente-Moncada N, Santa-Marta M, Outeiro TF, Antolín I, Rodriguez C, Herrera F. Distinct roles of N-acetyl and 5-methoxy groups in the antiproliferative and neuroprotective effects of melatonin. Mol Cell Endocrinol 2016; 434:238-49. [PMID: 27402602 DOI: 10.1016/j.mce.2016.07.012] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/29/2016] [Revised: 07/04/2016] [Accepted: 07/07/2016] [Indexed: 12/15/2022]
Abstract
Melatonin (N-acetyl-5-methoxytryptamine) is a highly pleiotropic hormone with antioxidant, antiproliferative, oncolytic and neuroprotective properties. Here, we present evidence that the N-acetyl side chain plays a key role in melatonin's antiproliferative effect in HT22 and sw-1353 cells, but it does so at the expense of antioxidant and neuroprotective properties. Removal of the N-acetyl group enhances the antioxidant and neuroprotective properties of the indole, but it can lead to toxic methamphetamine-like effects in several cell lines. Inhibition of NFkB mimicked melatonin's antiproliferative and antioxidant effects, but not neuroprotection. Our results strongly suggest that neuroprotective and antiproliferative effects of melatonin rely on different parts of the molecule and are likely mediated by different mechanisms. We also predict that melatonin metabolism by target cells could determine whether melatonin inhibits cell proliferation, prevents toxicity or induces cell death (e.g. apoptosis or autophagy). These observations could have important implications for the rational use of melatonin in personalized medicine.
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Affiliation(s)
- Ricardo Letra-Vilela
- Cell Structure and Dynamics Laboratory, Instituto de Tecnologia Quimica e Biologica (ITQB-NOVA), Universidade Nova de Lisboa, Oeiras, Portugal
| | - Ana María Sánchez-Sánchez
- Departamento de Morfología y Biología Celular, Facultad de Medicina, Universidad de Oviedo, Oviedo, Spain
| | - Ana Maia Rocha
- Cell Structure and Dynamics Laboratory, Instituto de Tecnologia Quimica e Biologica (ITQB-NOVA), Universidade Nova de Lisboa, Oeiras, Portugal
| | - Vanesa Martin
- Departamento de Morfología y Biología Celular, Facultad de Medicina, Universidad de Oviedo, Oviedo, Spain
| | - Joana Branco-Santos
- Cell Structure and Dynamics Laboratory, Instituto de Tecnologia Quimica e Biologica (ITQB-NOVA), Universidade Nova de Lisboa, Oeiras, Portugal
| | - Noelia Puente-Moncada
- Departamento de Morfología y Biología Celular, Facultad de Medicina, Universidad de Oviedo, Oviedo, Spain; Instituto Universitario de Oncología del Principado de Asturias, Facultad de Medicina, Universidad de Oviedo, Oviedo, Spain
| | - Mariana Santa-Marta
- Cell Structure and Dynamics Laboratory, Instituto de Tecnologia Quimica e Biologica (ITQB-NOVA), Universidade Nova de Lisboa, Oeiras, Portugal
| | - Tiago Fleming Outeiro
- Department of Neurodegeneration and Restorative Research, University Medical Center Gottingen, Waldweg 33, 37073 Gottingen, Germany; Max Planck Institute for Experimental Medicine, 37075 Goettingen, Germany
| | - Isaac Antolín
- Departamento de Morfología y Biología Celular, Facultad de Medicina, Universidad de Oviedo, Oviedo, Spain
| | - Carmen Rodriguez
- Departamento de Morfología y Biología Celular, Facultad de Medicina, Universidad de Oviedo, Oviedo, Spain; Instituto Universitario de Oncología del Principado de Asturias, Facultad de Medicina, Universidad de Oviedo, Oviedo, Spain.
| | - Federico Herrera
- Cell Structure and Dynamics Laboratory, Instituto de Tecnologia Quimica e Biologica (ITQB-NOVA), Universidade Nova de Lisboa, Oeiras, Portugal.
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22
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Liu Y, Wang W, Li Y, Xiao Y, Cheng J, Jia J. The 5-Lipoxygenase Inhibitor Zileuton Confers Neuroprotection against Glutamate Oxidative Damage by Inhibiting Ferroptosis. Biol Pharm Bull 2016; 38:1234-9. [PMID: 26235588 DOI: 10.1248/bpb.b15-00048] [Citation(s) in RCA: 125] [Impact Index Per Article: 15.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
5-Lipoxygenase (5-LOX) inhibitors have been shown to be protective in several neurodegenerative disease models; however, the underlying mechanisms remain unclear. We investigated whether 5-LOX inhibitor zileuton conferred direct neuroprotection against glutamate oxidative toxicity by inhibiting ferroptosis, a newly identified iron-dependent programmed cell death. Treatment of HT22 mouse neuronal cell line with glutamate resulted in significant cell death, which was inhibited by zileuton in a dose-dependent manner. Consistently, zileuton decreased glutamate-induced production of reactive oxygen species but did not restore glutamate-induced depletion of glutathione. Moreover, the pan-caspase inhibitor Z-Val-Ala-Asp(OMe)-fluoromethyl ketone (ZVAD-fmk) neither prevented HT22 cell death induced by glutamate nor affected zileuton protection against glutamate oxidative toxicity, suggesting that zileuton did not confer neuroprotection by inhibiting caspase-dependent apoptosis. Interestingly, glutamate-induced HT22 cell death was significantly inhibited by the ferroptosis inhibitor ferrostatin-1. Moreover, zileuton protected HT22 neuronal cells from erastin-induced ferroptosis. However, we did not observe synergic protective effects of zileuton and ferrostatin-1 on glutamate-induced cell death. These results suggested that both the 5-LOX inhibitor zileuton and the ferropotosis inhibitor ferrostatin-1 acted through the same cascade to protect against glutamate oxidative toxicity. In conclusion, our results suggested that zileuton protected neurons from glutamate-induced oxidative stress at least in part by inhibiting ferroptosis.
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Affiliation(s)
- Yang Liu
- Jiangsu Key Laboratory of Translational Research and Therapy for Neuro-Psycho-Diseases and College of Pharmaceutical Sciences, Soochow University
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23
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Hong C, Seo H, Kwak M, Jeon J, Jang J, Jeong EM, Myeong J, Hwang YJ, Ha K, Kang MJ, Lee KP, Yi EC, Kim IG, Jeon JH, Ryu H, So I. Increased TRPC5 glutathionylation contributes to striatal neuron loss in Huntington's disease. Brain 2015; 138:3030-47. [PMID: 26133660 PMCID: PMC4643628 DOI: 10.1093/brain/awv188] [Citation(s) in RCA: 78] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2014] [Revised: 05/04/2015] [Accepted: 05/05/2015] [Indexed: 12/22/2022] Open
Abstract
Aberrant glutathione or Ca(2+) homeostasis due to oxidative stress is associated with the pathogenesis of neurodegenerative disorders. The Ca(2+)-permeable transient receptor potential cation (TRPC) channel is predominantly expressed in the brain, which is sensitive to oxidative stress. However, the role of the TRPC channel in neurodegeneration is not known. Here, we report a mechanism of TRPC5 activation by oxidants and the effect of glutathionylated TRPC5 on striatal neurons in Huntington's disease. Intracellular oxidized glutathione leads to TRPC5 activation via TRPC5 S-glutathionylation at Cys176/Cys178 residues. The oxidized glutathione-activated TRPC5-like current results in a sustained increase in cytosolic Ca(2+), activated calmodulin-dependent protein kinase and the calpain-caspase pathway, ultimately inducing striatal neuronal cell death. We observed an abnormal glutathione pool indicative of an oxidized state in the striatum of Huntington's disease transgenic (YAC128) mice. Increased levels of endogenous TRPC5 S-glutathionylation were observed in the striatum in both transgenic mice and patients with Huntington's disease. Both knockdown and inhibition of TRPC5 significantly attenuated oxidation-induced striatal neuronal cell death. Moreover, a TRPC5 blocker improved rearing behaviour in Huntington's disease transgenic mice and motor behavioural symptoms in littermate control mice by increasing striatal neuron survival. Notably, low levels of TRPC1 increased the formation of TRPC5 homotetramer, a highly Ca(2+)-permeable channel, and stimulated Ca(2+)-dependent apoptosis in Huntington's disease cells (STHdh(Q111/111)). Taken together, these novel findings indicate that increased TRPC5 S-glutathionylation by oxidative stress and decreased TRPC1 expression contribute to neuronal damage in the striatum and may underlie neurodegeneration in Huntington's disease.
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Affiliation(s)
- Chansik Hong
- 1 Department of Physiology and Institute of Dermatological Science, Seoul National University College of Medicine, Seoul, 110-799, South Korea
| | - Hyemyung Seo
- 2 Department of Molecular and Life Sciences, Hanyang University, Ansan, 425-791, South Korea
| | - Misun Kwak
- 1 Department of Physiology and Institute of Dermatological Science, Seoul National University College of Medicine, Seoul, 110-799, South Korea
| | - Jeha Jeon
- 2 Department of Molecular and Life Sciences, Hanyang University, Ansan, 425-791, South Korea
| | - Jihoon Jang
- 2 Department of Molecular and Life Sciences, Hanyang University, Ansan, 425-791, South Korea
| | - Eui Man Jeong
- 3 Department of Biochemistry and Molecular Biology, Seoul National University College of Medicine, Seoul, 110-799, South Korea
| | - Jongyun Myeong
- 1 Department of Physiology and Institute of Dermatological Science, Seoul National University College of Medicine, Seoul, 110-799, South Korea
| | - Yu Jin Hwang
- 4 VA Boston Healthcare System, Department of Neurology and Boston University Alzheimer's Disease Centre, Boston University School of Medicine, Boston, MA 02118, USA
| | - Kotdaji Ha
- 1 Department of Physiology and Institute of Dermatological Science, Seoul National University College of Medicine, Seoul, 110-799, South Korea
| | - Min Jueng Kang
- 5 Department of Molecular Medicine and Biopharmaceutical Sciences, Graduate School of Convergence Science and Technology, Seoul National University College of Medicine or Pharmacy, Seoul, 110-799, South Korea
| | - Kyu Pil Lee
- 6 Department of Physiology, College of Veterinary Medicine, Chungnam National University, Daejeon, 305-764, South Korea
| | - Eugene C Yi
- 5 Department of Molecular Medicine and Biopharmaceutical Sciences, Graduate School of Convergence Science and Technology, Seoul National University College of Medicine or Pharmacy, Seoul, 110-799, South Korea
| | - In-Gyu Kim
- 3 Department of Biochemistry and Molecular Biology, Seoul National University College of Medicine, Seoul, 110-799, South Korea
| | - Ju-Hong Jeon
- 1 Department of Physiology and Institute of Dermatological Science, Seoul National University College of Medicine, Seoul, 110-799, South Korea
| | - Hoon Ryu
- 4 VA Boston Healthcare System, Department of Neurology and Boston University Alzheimer's Disease Centre, Boston University School of Medicine, Boston, MA 02118, USA 7 Centre for Neuromedicine, Brain Science Institute, Korea Institute of Science and Technology, Seoul, 136-791, South Korea
| | - Insuk So
- 1 Department of Physiology and Institute of Dermatological Science, Seoul National University College of Medicine, Seoul, 110-799, South Korea
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24
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Kim HN, Jang JY, Choi BT. A single fraction from Uncaria sinensis exerts neuroprotective effects against glutamate-induced neurotoxicity in primary cultured cortical neurons. Anat Cell Biol 2015; 48:95-103. [PMID: 26140220 PMCID: PMC4488647 DOI: 10.5115/acb.2015.48.2.95] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2014] [Revised: 01/13/2015] [Accepted: 02/17/2015] [Indexed: 01/16/2023] Open
Abstract
We identified a neuroprotective single fraction among 62 ones of hexane extract from Uncaria sinensis (JGH43IA) and investigated its effects and mechanisms in primary cortical neurons. Pretreatment with JGH43IA showed a significantly increase cell viability in a dose-dependent manner with a decrease in the lactate dehydrogenase release. When we performed morphological assay and flow cytometry to determination of the type of cell death, pretreatment with JGH43IA showed a significant reduction of glutamate-induced apoptotic cell death. Then we explored the downstream signaling pathways of N-methyl-D-aspartate receptor (NMDAR) with calpain activation to elucidate possible pathways of neuroprotection by JGH43IA. Pretreatment with JGH43IA exhibited a significant attenuation of NMDAR GluN2B subunit activation and a decrease in active form of calpain 1 leading to subsequent cleavage of striatal-enriched protein tyrosine phosphatase (STEP). In addition, pretreatment with JGH43IA showed a marked increase of cAMP responsive element binding protein. These results suggest that JGH43IA may have neuroprotective effects through down-regulation of NMDAR GluN2B subunit and calpain 1 activation, and subsequent alleviation of STEP cleavage. This single fraction from U. sinensis might be a useful therapeutic agent for brain disorder associated with glutamate injury.
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Affiliation(s)
- Ha Neui Kim
- Department of Korean Medicine, School of Korean Medicine, Pusan National University, Yangsan, Korea
| | - Ji Yeon Jang
- Division of Meridian and Structural Medicine, School of Korean Medicine, Pusan National University, Yangsan, Korea
| | - Byung Tae Choi
- Department of Korean Medicine, School of Korean Medicine, Pusan National University, Yangsan, Korea. ; Division of Meridian and Structural Medicine, School of Korean Medicine, Pusan National University, Yangsan, Korea
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25
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Zheng S, Wei S, Wang X, Xu Y, Xiao Y, Liu H, Jia J, Cheng J. Sphingosine kinase 1 mediates neuroinflammation following cerebral ischemia. Exp Neurol 2015; 272:160-9. [PMID: 25797575 DOI: 10.1016/j.expneurol.2015.03.012] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2014] [Revised: 03/10/2015] [Accepted: 03/13/2015] [Indexed: 11/18/2022]
Abstract
Sphingosine kinases (Sphks) are the rate-limiting kinases in the generation of sphingosine-1-phosphate, which is a well-established intracellular pro-survival lipid mediator. Sphk2 has been reported to be protective following experimental stroke. We investigated the role of Sphk1 in cerebral ischemia using a mouse middle cerebral artery occlusion (MCAO) model and an in vitro glucose-oxygen deprivation (OGD) model. Sphk expression and activity were assessed in the ischemic brain with quantitative PCR (qPCR), Western blot, immunohistochemistry and enzyme-linked immunosorbent assay (ELISA). Pharmacological and gene knockdown approaches were utilized to investigate the effects of Sphk1 on stroke outcomes. The expression of Sphk1 but not that of Sphk2 was rapidly induced in the cortical penumbra over 96h after MCAO, and the microglia were one of the major cellular sources of Sphk1 induction. Consistently, Sphk activity was enhanced in the cortical penumbra. In contrast to the protective role of Sphk2, pharmacological inhibition and cortical knockdown of Sphk1 reduced infarction at 24 and 96h after reperfusion. Additionally, the Sphk1 inhibitor improved the neurological deficits at 96h after reperfusion. Mechanistically, Sphk1 inhibition and knockdown significantly attenuated MCAO-induced expression of inflammatory mediators in the cortical penumbra. Moreover, using a conditioned medium transfer approach, we demonstrated that OGD-treated neurons induced the expression of Sphk1 and pro-inflammatory mediators in primary microglia, and the microglial induction of pro-inflammatory mediators by ischemic neurons was blunted by Sphk1 inhibition. Taken together, our results indicate that Sphk1 plays an essential role in mediating post-stroke neuroinflammation.
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Affiliation(s)
- Shuli Zheng
- Jiangsu Key Laboratory of Translational Research and Therapy for Neuro-Psycho-Diseases and Institute of Neuroscience, Soochow University, Suzhou, China; Department of Skin & Cosmetic Research, Shanghai Skin Disease Hospital, Shanghai, China
| | - Shanwen Wei
- Jiangsu Key Laboratory of Translational Research and Therapy for Neuro-Psycho-Diseases and Institute of Neuroscience, Soochow University, Suzhou, China
| | - Xiaoyu Wang
- College of Pharmaceutical Sciences, Soochow University, Suzhou, China
| | - Yingxiu Xu
- Jiangsu Key Laboratory of Translational Research and Therapy for Neuro-Psycho-Diseases and Institute of Neuroscience, Soochow University, Suzhou, China
| | - Yunqi Xiao
- Jiangsu Key Laboratory of Translational Research and Therapy for Neuro-Psycho-Diseases and Institute of Neuroscience, Soochow University, Suzhou, China
| | - Hui Liu
- Jiangsu Key Laboratory of Translational Research and Therapy for Neuro-Psycho-Diseases and Institute of Neuroscience, Soochow University, Suzhou, China
| | - Jia Jia
- College of Pharmaceutical Sciences, Soochow University, Suzhou, China.
| | - Jian Cheng
- Jiangsu Key Laboratory of Translational Research and Therapy for Neuro-Psycho-Diseases and Institute of Neuroscience, Soochow University, Suzhou, China.
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Dan Y, Zhang S, Zhong H, Yi H, Sainz MB. Novel compounds that enhance Agrobacterium-mediated plant transformation by mitigating oxidative stress. PLANT CELL REPORTS 2015; 34:291-309. [PMID: 25429877 DOI: 10.1007/s00299-014-1707-3] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/26/2014] [Revised: 09/30/2014] [Accepted: 10/22/2014] [Indexed: 05/23/2023]
Abstract
KEY MESSAGE Agrobacterium tumefaciens caused tissue browning leading to subsequent cell death in plant transformation and novel anti-oxidative compounds enhanced Agrobacterium -mediated plant transformation by mitigating oxidative stress. Browning and death of cells transformed with Agrobacterium tumefaciens is a long-standing and high impact problem in plant transformation and the agricultural biotechnology industry, severely limiting the production of transgenic plants. Using our tomato cv. MicroTom transformation system, we demonstrated that Agrobacterium caused tissue browning (TB) leading to subsequent cell death by our correlation study. Without an antioxidant (lipoic acid, LA) TB was severe and associated with high levels of GUS transient expression and low stable transformation frequency (STF). LA addition shifted the curve in that most TB was intermediate and associated with the highest levels of GUS transient expression and STF. We evaluated 18 novel anti-oxidative compounds for their potential to enhance Agrobacterium-mediated transformation, by screening for TB reduction and monitoring GUS transient expression. Promising compounds were further evaluated for their effect on MicroTom and soybean STF. Among twelve non-antioxidant compounds, seven and five significantly (P < 0.05) reduced TB and increased STF, respectively. Among six antioxidants four of them significantly reduced TB and five of them significantly increased STF. The most efficient compound found to increase STF was melatonin (MEL, an antioxidant). Optimal concentrations and stages to use MEL in transformation were determined, and Southern blot analysis showed that T-DNA integration was not affected by MEL. The ability of diverse compounds with different anti-oxidative mechanisms can reduce Agrobacterium-mediated TB and increase STF, strongly supporting that oxidative stress is an important limiting factor in Agrobacterium-mediated transformation and the limiting factor can be controlled by these compounds at different levels.
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Affiliation(s)
- Yinghui Dan
- Institute for Advanced Learning and Research, 150 Slayton Avenue, Danville, VA, 24540, USA,
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Chen X, Deng A, Zhou T, Ding F. Pretreatment with 2-(4-methoxyphenyl)ethyl-2-acetamido-2-deoxy-β-D-pyranoside attenuates cerebral ischemia/reperfusion-induced injury in vitro and in vivo. PLoS One 2014; 9:e100126. [PMID: 24991917 PMCID: PMC4084628 DOI: 10.1371/journal.pone.0100126] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2014] [Accepted: 05/22/2014] [Indexed: 01/06/2023] Open
Abstract
Salidroside, extracted from the root of Rhodiola rosea L, is known for its pharmacological properties, in particular its neuroprotective effects. 2-(4-Methoxyphenyl) ethyl-2-acetamido-2-deoxy-β-D-pyranoside (GlcNAc-Sal), an analog of salidroside, was recently synthesized and shown to possess neuroprotective properties. The purpose of the current study was to investigate the neuroprotective effects of GlcNAc-Sal against oxygen-glucose deprivation-reperfusion (OGD-R)-induced neurotoxicity in vitro and global cerebral ischemia-reperfusion (GCI-R) injury in vivo. Cell viability tests and Hoechst 33342 staining confirmed that GlcNAc-Sal pretreatment markedly attenuated OGD-R induced apoptotic cell death in immortalized mouse hippocampal HT22 cells. Western blot, immunofluorescence and PCR analyses revealed that GlcNAc-Sal pretreatment restored the balance of pro- and anti-apoptotic proteins and inhibited the activation of caspase-3 and PARP induced by OGD-R treatment. Further analyses showed that GlcNAc-Sal pretreatment antagonized reactive oxygen species (ROS) generation, iNOS-derived NO production and NO-related apoptotic cell death during OGD-R stimulation. GCI-R was induced by bilateral common carotid artery occlusion (BCCAO) and reperfusion in mice in vivo. Western blot analysis showed that GlcNAc-Sal pretreatment decreased the expression of caspase-3 and increased the expression of Bcl-2 (B-cell lymphoma 2)/Bax (Bcl-2-associated X protein) induced by GCI-R treatment. Our findings suggest that GlcNAc-Sal pretreatment prevents brain ischemia reperfusion injury by the direct or indirect suppression of cell apoptosis and GlcNAc-Sal could be developed as a broad-spectrum agent for the prevention and/or treatment of cerebral ischemic injury.
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Affiliation(s)
- Xia Chen
- Basic Medical Research Centre, Medical School, Nantong University, Nantong, China
| | - Aiqing Deng
- Department of Pharmacy, Affiliated Hospital of Nantong University, Nantong, China
| | - Tianqiu Zhou
- Department of ophtalmology, Affiliated Hospital of Nantong University, Nantong, China
| | - Fei Ding
- Jiangsu Key Laboratory of Neuroregeneration, Nantong University, Nantong, China
- * E-mail:
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Chao XJ, Chen ZW, Liu AM, He XX, Wang SG, Wang YT, Liu PQ, Ramassamy C, Mak SH, Cui W, Kong AN, Yu ZL, Han YF, Pi RB. Effect of tacrine-3-caffeic acid, a novel multifunctional anti-Alzheimer's dimer, against oxidative-stress-induced cell death in HT22 hippocampal neurons: involvement of Nrf2/HO-1 pathway. CNS Neurosci Ther 2014; 20:840-50. [PMID: 24922524 DOI: 10.1111/cns.12286] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2014] [Revised: 04/23/2014] [Accepted: 04/24/2014] [Indexed: 12/27/2022] Open
Abstract
AIMS Oxidative stress (OS) plays an important role in the pathogenesis of neurodegenerative diseases, including Alzheimer's disease (AD). This study was designed to uncover the cellular and biochemical mechanisms underlying the neuroprotective effects of tacrine-3-caffeic acid (T3CA), a novel promising multifunctional anti-Alzheimer's dimer, against OS-induced neuronal death. METHODS AND RESULTS T3CA protected HT22 cells against high-concentration-glutamate-induced cell death in time- and concentration-dependent manners and potently attenuated glutamate-induced intracellular reactive oxygen species (ROS) production as well as mitochondrial membrane-potential (ΔΨ) disruption. Besides, T3CA significantly induced nuclear factor erythroid 2-related factor 2 (Nrf2) nuclear translocation and increased its transcriptional activity, which were demonstrated by Western blotting, immunofluorescence, and antioxidant response element (ARE)-luciferase reporter gene assay. Further studies showed that T3CA potently up-regulated heme oxygenase-1 (HO-1), an endogenous antioxidative enzyme and a downstream effector of Nrf2, at both mRNA and protein levels. The neuroprotective effects of T3CA were partially reversed by brusatol, which reduced protein level of Nrf2, or by inhibiting HO-1 with siRNA or ZnPP-IX, a specific inhibitor of HO-1. CONCLUSIONS Taken together, these results clearly demonstrate that T3CA protects neurons against OS-induced cell death partially through Nrf2/ARE/HO-1 signaling pathway, which further supports that T3CA might be a promising novel therapeutic agent for OS-associated diseases.
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Affiliation(s)
- Xiao-Juan Chao
- Department of Pharmacology & Toxicology, School of Pharmaceutical Sciences, Sun Yat-Sen University, Guangzhou, China
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Talarowska M, Szemraj J, Zajączkowska M, Gałecki P. ASMT gene expression correlates with cognitive impairment in patients with recurrent depressive disorder. Med Sci Monit 2014; 20:905-12. [PMID: 24881886 PMCID: PMC4052942 DOI: 10.12659/msm.890160] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
BACKGROUND Recurrent depressive disorder is a multifactorial disease; one of the typical features is cognitive impairment. The purpose of this study was analysis of ASMT gene expression both on mRNA and protein levels in patients with recurrent depressive disorder (rDD) and assessment of the relationship between plasma level of ASMT protein, gene expression on mRNA level, and cognitive performance. MATERIAL AND METHODS The study included 236 subjects: patients with rDD (n=131) and healthy subjects (n=105, CG). Cognitive function assessment was based on: Trail Making Test, The Stroop Test, Verbal Fluency Test (VFT), and Auditory Verbal Learning Test (AVLT). RESULTS Both mRNA and protein expression levels of ASMT gene were significantly higher in healthy subjects when compared to rDD. The average ASMT mRNA expression level measured for the entire group was M=0.21 (SD=0.09), and the protein level was M=12.84 (SD=3.29). In patients with rDD, statistically significant correlations occurred between both mRNA and protein expression levels and part A of the TMT (negative correlation) and verbal fluency test (positive correlation). In the group CG, there was no statistically significant association between the analyzed variables. In the entire group there was a statistically significant correlation between both ASMT mRNA and protein expression levels and all the neuropsychological tests used in the survey. CONCLUSIONS 1. Our study confirms previous results showing decreased mRNA and protein expression levels of ASMT gene in depression. 2. Our data suggest a relationship between decreased mRNA and protein expression levels of ASMT gene and cognitive impairment.
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Affiliation(s)
- Monika Talarowska
- Department of Adult Psychiatry, Medical University of Łódź, Łódź, Poland
| | - Janusz Szemraj
- Department of Medical Biochemistry, Medical University of Łódź, Łódź, Poland
| | | | - Piotr Gałecki
- Department of Adult Psychiatry, Medical University of Łódź, Łódź, Poland
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Giannetto A, Fernandes JMO, Nagasawa K, Mauceri A, Maisano M, De Domenico E, Cappello T, Oliva S, Fasulo S. Influence of continuous light treatment on expression of stress biomarkers in Atlantic cod. DEVELOPMENTAL AND COMPARATIVE IMMUNOLOGY 2014; 44:30-34. [PMID: 24296437 DOI: 10.1016/j.dci.2013.11.011] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/21/2013] [Revised: 11/21/2013] [Accepted: 11/24/2013] [Indexed: 06/02/2023]
Abstract
Continuous light treatment during early juvenile stages in Gadus morhua is a common farming management practice but the effects of these unnatural light conditions on fish stress have received scant attention. In the present study we investigated how continuous illumination affects transcription levels of key stress-related and antimicrobial peptide genes in juvenile Atlantic cod. Gene expression quantification by real-time PCR revealed higher levels of transcripts coding for antioxidant enzymes, namely superoxide dismutase, catalase and glutathione reductase in liver of fish reared under continuous illumination, concomitantly with a 43% decrease in glutathione content. Transcription of antimicrobial peptides such as piscidins, hepcidin and cathelicidin was also affected by constant illumination. Overall, the significant changes in liver transcript levels of these biomarkers in response to continuous light may be an adaptation to light stress.
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Affiliation(s)
- Alessia Giannetto
- Department of Biological and Environmental Sciences, University of Messina, 98166 Messina, Italy.
| | - Jorge M O Fernandes
- Faculty of Bioscience and Aquaculture, University of Nordland, 8049 Bodø, Norway
| | - Kazue Nagasawa
- Faculty of Bioscience and Aquaculture, University of Nordland, 8049 Bodø, Norway
| | - Angela Mauceri
- Department of Biological and Environmental Sciences, University of Messina, 98166 Messina, Italy
| | - Maria Maisano
- Department of Biological and Environmental Sciences, University of Messina, 98166 Messina, Italy
| | - Elena De Domenico
- Department of Biological and Environmental Sciences, University of Messina, 98166 Messina, Italy
| | - Tiziana Cappello
- Department of Biological and Environmental Sciences, University of Messina, 98166 Messina, Italy
| | - Sabrina Oliva
- Department of Biological and Environmental Sciences, University of Messina, 98166 Messina, Italy
| | - Salvatore Fasulo
- Department of Biological and Environmental Sciences, University of Messina, 98166 Messina, Italy
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Zakarova A, Seo JY, Kim HY, Kim JH, Shin JH, Cho KM, Lee CH, Kim JS. Garlic sprouting is associated with increased antioxidant activity and concomitant changes in the metabolite profile. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2014; 62:1875-1880. [PMID: 24512482 DOI: 10.1021/jf500603v] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Although garlic (Allium sativum) has been extensively studied for its health benefits, sprouted garlic has received little attention. We hypothesized that sprouting garlic would stimulate the production of various phytochemicals that improve health. Ethanolic extracts from garlic sprouted for different periods had variable antioxidant activities when assessed with in vitro assays, including the 2,2-diphenyl-1-picrylhydrazyl radical scavenging activity assay and the oxygen radical absorbance capacity assay. Extracts from garlic sprouted for 5 days had the highest antioxidant activity, whereas extracts from raw garlic had relatively low antioxidant activity. Furthermore, sprouting changed the metabolite profile of garlic: the metabolite profile of garlic sprouted for 5-6 days was distinct from the metabolite profile of garlic sprouted for 0-4 days, which is consistent with the finding that garlic sprouted for 5 days had the highest antioxidant activity. Therefore, sprouting may be a useful way to improve the antioxidant potential of garlic.
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Affiliation(s)
- Alexandra Zakarova
- School of Food Science and Biotechnology (BK21 plus), Kyungpook National University , Daegu 702-701, Republic of Korea
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Nguyen T, Yang T, Go ML. Functionalized acridin-9-yl phenylamines protected neuronal HT22 cells from glutamate-induced cell death by reducing intracellular levels of free radical species. Bioorg Med Chem Lett 2014; 24:1830-8. [PMID: 24602904 DOI: 10.1016/j.bmcl.2014.02.006] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2013] [Revised: 02/01/2014] [Accepted: 02/05/2014] [Indexed: 01/02/2023]
Abstract
The in vitro neuronal cell death model based on the HT22 mouse hippocampal cell model is a convenient means of identifying compounds that protect against oxidative glutamate toxicity which plays a role in the development of certain neurodegenerative diseases. Functionalized acridin-9-yl-phenylamines were found to protect HT22 cells from glutamate challenge at submicromolar concentrations. The Aryl(1)-NH-Aryl(2) scaffold that is embedded in these compounds was the minimal pharmacophore for activity. Mechanistically, protection against the endogenous oxidative stress generated by glutamate did not involve up-regulation of glutathione levels but attenuation of the late stage increases in mitochondrial ROS and intracellular calcium levels. The NH residue in the pharmacophore played a crucial role in this regard as seen from the loss of neuroprotection when it was structurally modified or replaced. That the same NH was essential for radical scavenging in cell-free and cell-based systems pointed to an antioxidant basis for the neuroprotective activities of these compounds.
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Affiliation(s)
- Thuy Nguyen
- Department of Medicinal Chemistry, School of Pharmacy, Virginia Commonwealth University, 800E Leigh Street, Richmond, VA 23298-0540, USA
| | - Tianming Yang
- Department of Pharmacy, National University of Singapore, 18 Science Drive 4, Singapore 117543, Republic of Singapore
| | - Mei-Lin Go
- Department of Pharmacy, National University of Singapore, 18 Science Drive 4, Singapore 117543, Republic of Singapore.
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SHE FEI, WANG WENBO, WANG YAN, TANG PEIFU, WEI JUNQIANG, CHEN HUA, ZHANG BOXUN. Melatonin protects MG63 osteoblast-like cells from hydrogen peroxide-induced cytotoxicity by maintaining mitochondrial function. Mol Med Rep 2013; 9:493-8. [DOI: 10.3892/mmr.2013.1832] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2013] [Accepted: 11/18/2013] [Indexed: 11/06/2022] Open
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Kim SJ, Lee SR. Protective effect of melatonin against transient global cerebral ischemia-induced neuronal cell damage via inhibition of matrix metalloproteinase-9. Life Sci 2013; 94:8-16. [PMID: 24269215 DOI: 10.1016/j.lfs.2013.11.013] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2013] [Revised: 11/09/2013] [Accepted: 11/09/2013] [Indexed: 11/26/2022]
Abstract
AIMS Melatonin possesses various pharmacological effects including neuroprotective effects against brain ischemia. Post-ischemic increases in matrix metalloproteinase-9 (MMP-9) expression and activity mainly contribute to neuronal damage by degradation of the extracellular matrix. This study was designed to examine whether melatonin has a neuroprotective effect and an influence on MMP-9 in transient global brain ischemia. MAIN METHODS Mice were subjected to 20 min of global brain ischemia and sacrificed 72h later. Melatonin (30 mg/kg) was administered 30 min before and 2h after ischemia as well as once daily until sacrifice. KEY FINDINGS Hippocampal pyramidal cell damage after ischemia was significantly decreased by melatonin. As observed by zymography, melatonin inhibited the increase of MMP-9 activity after ischemia. In the brain sections, the increased gelatinase activity was mainly observed in the hippocampus after ischemia and melatonin also reduced gelatinase activity. The laminin and NeuN expression levels were reduced in the hippocampal CA1 and CA2 regions after ischemia, and melatonin reduced laminin degradation and neuronal loss. A TUNEL assay demonstrated that there were TUNEL-positive cells in the hippocampus and the number of TUNEL-positive cells was significantly decreased by melatonin. There was no difference in the ischemia-induced hippocampal neuronal damage between the vehicle- and melatonin-treated groups of MMP-9 knock-out mice. SIGNIFICANCE These data demonstrate that melatonin suppressed the occurrence of neuronal injury, which might be partly due to its inhibitory effects on MMP-9 in addition to its anti-oxidative effects. MMP-9 may be an important key target of melatonin in neuroprotection against global ischemia.
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Affiliation(s)
- Su-Jin Kim
- Department of Anesthesiology, College of Medicine, Dongguk University, Gyeongju, South Korea; Department of Pharmacology, School of Medicine and Brain Research Institute, Keimyung University, Daegu 704-701, South Korea
| | - Seong-Ryong Lee
- Department of Pharmacology, School of Medicine and Brain Research Institute, Keimyung University, Daegu 704-701, South Korea.
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Kim HN, Kim YR, Jang JY, Choi YW, Baek JU, Hong JW, Choi YH, Shin HK, Choi BT. Neuroprotective effects of Polygonum multiflorum extract against glutamate-induced oxidative toxicity in HT22 hippocampal cells. JOURNAL OF ETHNOPHARMACOLOGY 2013; 150:108-115. [PMID: 23973786 DOI: 10.1016/j.jep.2013.08.014] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/12/2013] [Revised: 07/12/2013] [Accepted: 08/11/2013] [Indexed: 06/02/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Dried roots of Polygonum multiflorum have traditionally been used in the retarding of aging process in East Asian countries and its extracts exhibit anti-oxidative activities. MATERIALS AND METHODS Neuroprotective effects of ethyl acetate extract from Polygonum multiflorum (EEPM) were investigated against glutamate-induced oxidative cell death in HT22 hippocampal cells. Cell viability, cytotoxicity, morphological, flow cytometry, and Western blot assays were performed in order to observe alterations of neuronal cell survival or death related pathways. RESULTS Pretreatment with EEPM resulted in significantly decreased glutamate-induced neurotoxicity and also resulted in drastically inhibited glutamate-induced apoptotic and necrotic neuronal death. To elucidate possible pathways of neuroprotection by EEPM, we explored the activation of mitogen activated protein kinases (MAPKs), phosphatidylinositol-3-kinase, and cAMP responsive element binding protein (CREB). Treatment with glutamate alone led to activation of extracellular regulated kinase (ERK), Jun N-terminal kinase, and p38 during the late phase after glutamate exposure, but pretreatment with EEPM resulted in significantly attenuated activation of these proteins. Pretreatment with EEPM resulted in increased activation of CREB. The specific inhibitors of ERK and p38, PD98059 and SB203580, abrogated the neuroprotective effects of EEPM. When we evaluated calpain I and striatal-enriched protein tyrosine phosphatase (STEP), active form of calpain I was significantly increased after glutamate exposure, and, along with this, active form of STEP showed a decrease. Pretreatment with EEPM resulted in significant recovery of pro-calpain I and active form of STEP caused by glutamate. Co-treatment with calpain inhibitor ALLN and EEPM had a synergistic effect on neuronal death and contributed to blockade of activation of both ERK and p38 with increased activation of CREB. CONCLUSIONS These results suggest that Polygonum multiflorum extract may have neuroprotective effects through both alleviation of ERK and p38 activation with increased activation of CREB under oxidative stress and has potential as a therapeutic intervention for treatment of oxidative neuronal death.
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Affiliation(s)
- Ha Neui Kim
- Department of Korean Medical Science, School of Korean Medicine, Pusan National University, Yangsan 626-870, Republic of Korea
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Discovery of novel N-substituted carbazoles as neuroprotective agents with potent anti-oxidative activity. Eur J Med Chem 2013; 68:81-8. [PMID: 23973819 DOI: 10.1016/j.ejmech.2013.07.029] [Citation(s) in RCA: 66] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2013] [Revised: 07/20/2013] [Accepted: 07/22/2013] [Indexed: 12/12/2022]
Abstract
Carbazole moiety is an important scaffold with a variety of biological applications, for example, anti-oxidative stress. Our previous synthesized carbazoles were screened for their neuroprotective properties against two individual oxidative stresses. Some of the new carbazole derivatives were observed with modest to good neuroprotective effects on neuronal cells HT22 against cell injury induced by glutamate or homocysteic acid (HCA). Substituents introduced to the carbazole ring system play crucial roles in their biological activities. In particular, a bulky group favors the neuroprotective activity of the compounds. One of the new compounds, 6, showed the best neuroprotective effects, which might result from its anti-oxidative activity with a GSH-independent mechanism. These findings might provide an alternative strategy for the development of novel carbazole derivatives for the treatment of CNS diseases such as Alzheimer's disease.
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Jia J, Xiao Y, Wang W, Qing L, Xu Y, Song H, Zhen X, Ao G, Alkayed NJ, Cheng J. Differential mechanisms underlying neuroprotection of hydrogen sulfide donors against oxidative stress. Neurochem Int 2013; 62:1072-8. [PMID: 23587562 DOI: 10.1016/j.neuint.2013.04.001] [Citation(s) in RCA: 55] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2013] [Revised: 03/05/2013] [Accepted: 04/04/2013] [Indexed: 12/27/2022]
Abstract
This study investigated whether slow-releasing organic hydrogen sulfide donors act through the same mechanisms as those of inorganic donors to protect neurons from oxidative stress. By inducing oxidative stress in a neuronal cell line HT22 with glutamate, we investigated the protective mechanisms of the organic donors: ADT-OH [5-(4-hydroxyphenyl)-3H-1,2-dithiole-3-thione], the most widely used moiety for synthesizing slow-releasing hydrogen sulfide donors, and ADT, a methyl derivative of ADT-OH. The organic donors were more potent than the inorganic donor sodium hydrogensulfide (NaHS) in protecting HT22 cells against glutamate toxicity. Consistent with previous publications, NaHS partially restored glutamate-depleted glutathione (GSH) levels, protected HT22 from direct free radical damage induced by hydrogen peroxide (H2O2), and NaHS protection was abolished by a KATP channel blocker glibenclamide. However, neither ADT nor ADT-OH enhanced glutamate-depleted GSH levels or protected HT22 from H2O2-induced oxidative stress. Glibenclamide, which abolished NaHS neuroprotection against oxidative stress, did not block ADT and ADT-OH neuroprotection against glutamate-induced oxidative stress. Unexpectedly, we found that glutamate induced AMPK activation and that compound C, a well-established AMPK inhibitor, remarkably protected HT22 from glutamate-induced oxidative stress, suggesting that AMPK activation contributed to oxidative glutamate toxicity. Interestingly, all hydrogen sulfide donors, including NaHS, remarkably attenuated glutamate-induced AMPK activation. However, under oxidative glutamate toxicity, compound C only increased the viability of HT22 cells treated with NaHS, but did not further increase ADT and ADT-OH neuroprotection. Thus, suppressing AMPK activation likely contributed to ADT and ADT-OH neuroprotection. In conclusion, hydrogen sulfide donors acted through differential mechanisms to confer neuroprotection against oxidative toxicity and suppressing AMPK activation was a possible mechanism underlying neuroprotection of organic hydrogen sulfide donors against oxidative toxicity.
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Affiliation(s)
- Jia Jia
- Department of Pharmacology, College of Pharmaceutical Sciences, Soochow University, Suzhou, China
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Rodriguez C, Martín V, Herrera F, García-Santos G, Rodriguez-Blanco J, Casado-Zapico S, Sánchez-Sánchez AM, Suárez S, Puente-Moncada N, Anítua MJ, Antolín I. Mechanisms involved in the pro-apoptotic effect of melatonin in cancer cells. Int J Mol Sci 2013; 14:6597-613. [PMID: 23528889 PMCID: PMC3645656 DOI: 10.3390/ijms14046597] [Citation(s) in RCA: 77] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2013] [Revised: 03/18/2013] [Accepted: 03/20/2013] [Indexed: 12/15/2022] Open
Abstract
It is well established that melatonin exerts antitumoral effects in many cancer types, mostly decreasing cell proliferation at low concentrations. On the other hand, induction of apoptosis by melatonin has been described in the last few years in some particular cancer types. The cytotoxic effect occurs after its administration at high concentrations, and the molecular pathways involved have been only partially determined. Moreover, a synergistic effect has been found in several cancer types when it is administered in combination with chemotherapeutic agents. In the present review, we will summarize published work on the pro-apoptotic effect of melatonin in cancer cells and the reported mechanisms involved in such action. We will also construct a hypothesis on how different cell signaling pathways may relate each other on account for such effect.
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Affiliation(s)
- Carmen Rodriguez
- Department of Morphology and Cell Biology, Faculty of Medicine, University of Oviedo, c/Julian Claveria 6, 33006 Oviedo, Spain; E-Mails: (V.M.); (F.H.); (G.G.-S.); (J.R.-B.); (S.C.-Z.); (A.M.S.-S.); (S.S.); (N.P.-M.); (M.J.A.); (I.A.)
- Oncology Institute of Asturias, University of Oviedo, 33006 Oviedo, Spain
| | - Vanesa Martín
- Department of Morphology and Cell Biology, Faculty of Medicine, University of Oviedo, c/Julian Claveria 6, 33006 Oviedo, Spain; E-Mails: (V.M.); (F.H.); (G.G.-S.); (J.R.-B.); (S.C.-Z.); (A.M.S.-S.); (S.S.); (N.P.-M.); (M.J.A.); (I.A.)
- Oncology Institute of Asturias, University of Oviedo, 33006 Oviedo, Spain
| | - Federico Herrera
- Department of Morphology and Cell Biology, Faculty of Medicine, University of Oviedo, c/Julian Claveria 6, 33006 Oviedo, Spain; E-Mails: (V.M.); (F.H.); (G.G.-S.); (J.R.-B.); (S.C.-Z.); (A.M.S.-S.); (S.S.); (N.P.-M.); (M.J.A.); (I.A.)
- Institute of Molecular Medicine, Faculty of Medicine, University of Lisboa, Professor Egas Moniz Avenue, 1649-028 Lisboa, Portugal
| | - Guillermo García-Santos
- Department of Morphology and Cell Biology, Faculty of Medicine, University of Oviedo, c/Julian Claveria 6, 33006 Oviedo, Spain; E-Mails: (V.M.); (F.H.); (G.G.-S.); (J.R.-B.); (S.C.-Z.); (A.M.S.-S.); (S.S.); (N.P.-M.); (M.J.A.); (I.A.)
- Oncology Institute of Asturias, University of Oviedo, 33006 Oviedo, Spain
| | - Jezabel Rodriguez-Blanco
- Department of Morphology and Cell Biology, Faculty of Medicine, University of Oviedo, c/Julian Claveria 6, 33006 Oviedo, Spain; E-Mails: (V.M.); (F.H.); (G.G.-S.); (J.R.-B.); (S.C.-Z.); (A.M.S.-S.); (S.S.); (N.P.-M.); (M.J.A.); (I.A.)
| | - Sara Casado-Zapico
- Department of Morphology and Cell Biology, Faculty of Medicine, University of Oviedo, c/Julian Claveria 6, 33006 Oviedo, Spain; E-Mails: (V.M.); (F.H.); (G.G.-S.); (J.R.-B.); (S.C.-Z.); (A.M.S.-S.); (S.S.); (N.P.-M.); (M.J.A.); (I.A.)
- Oncology Institute of Asturias, University of Oviedo, 33006 Oviedo, Spain
| | - Ana María Sánchez-Sánchez
- Department of Morphology and Cell Biology, Faculty of Medicine, University of Oviedo, c/Julian Claveria 6, 33006 Oviedo, Spain; E-Mails: (V.M.); (F.H.); (G.G.-S.); (J.R.-B.); (S.C.-Z.); (A.M.S.-S.); (S.S.); (N.P.-M.); (M.J.A.); (I.A.)
- Oncology Institute of Asturias, University of Oviedo, 33006 Oviedo, Spain
| | - Santos Suárez
- Department of Morphology and Cell Biology, Faculty of Medicine, University of Oviedo, c/Julian Claveria 6, 33006 Oviedo, Spain; E-Mails: (V.M.); (F.H.); (G.G.-S.); (J.R.-B.); (S.C.-Z.); (A.M.S.-S.); (S.S.); (N.P.-M.); (M.J.A.); (I.A.)
| | - Noelia Puente-Moncada
- Department of Morphology and Cell Biology, Faculty of Medicine, University of Oviedo, c/Julian Claveria 6, 33006 Oviedo, Spain; E-Mails: (V.M.); (F.H.); (G.G.-S.); (J.R.-B.); (S.C.-Z.); (A.M.S.-S.); (S.S.); (N.P.-M.); (M.J.A.); (I.A.)
- Oncology Institute of Asturias, University of Oviedo, 33006 Oviedo, Spain
| | - María José Anítua
- Department of Morphology and Cell Biology, Faculty of Medicine, University of Oviedo, c/Julian Claveria 6, 33006 Oviedo, Spain; E-Mails: (V.M.); (F.H.); (G.G.-S.); (J.R.-B.); (S.C.-Z.); (A.M.S.-S.); (S.S.); (N.P.-M.); (M.J.A.); (I.A.)
| | - Isaac Antolín
- Department of Morphology and Cell Biology, Faculty of Medicine, University of Oviedo, c/Julian Claveria 6, 33006 Oviedo, Spain; E-Mails: (V.M.); (F.H.); (G.G.-S.); (J.R.-B.); (S.C.-Z.); (A.M.S.-S.); (S.S.); (N.P.-M.); (M.J.A.); (I.A.)
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Abstract
Melatonin has anti-oxidant activity and it exerts a neuroprotective effects during ischemic brain injury. Calcium-buffering proteins including parvalbumin and hippocalcin are involved in neuronal differentiation and maturation through calcium signaling. This study investigated whether melatonin moderates parvalbumin and hippocalcin expression in cerebral ischemia and glutamate toxicity-induced neuronal cell death. Focal cerebral ischemia was induced by middle cerebral artery occlusion (MCAO). Male Sprague-Dawley rats were treated with vehicle or melatonin (5 mg/kg) prior to MCAO, and cerebral cortical tissues were collected 24 hr after MCAO. Parvalbumin and hippocalcin levels were decreased in vehicle-treated animal with MCAO, whereas melatonin prevented the ischemic injury-induced reduction in these proteins. In cultured hippocampal cells, glutamate toxicity decreased parvalbumin and hippocalcin levels, while melatonin treatment prevented the glutamate exposure-induced diminished in these proteins levels. Melatonin also attenuated the glutamate toxicity-induced increase in intracellular Ca(2+) levels. These results suggest that the maintenance of parvalbumin and hippocalcin levels by melatonin in ischemic injury contributes to the neuroprotective effect of melatonin against neuronal cell damage.
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Affiliation(s)
- Phil-Ok Koh
- Department of Anatomy, College of Veterinary Medicine and Research Institute of Life Science, Gyeongsang National University, Jinju, South Korea.
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Jeong JK, Moon MH, Park YG, Lee JH, Lee YJ, Seol JW, Park SY. Gingerol-Induced Hypoxia-Inducible Factor 1 Alpha Inhibits Human Prion Peptide-Mediated Neurotoxicity. Phytother Res 2012; 27:1185-92. [DOI: 10.1002/ptr.4842] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2012] [Revised: 08/17/2012] [Accepted: 08/17/2012] [Indexed: 01/31/2023]
Affiliation(s)
- Jae-Kyo Jeong
- Korea Zoonoses Research Institute, Bio-Safety Research Institute, College of Veterinary Medicine; Chonbuk National University; Jeonju Jeonbuk 561-756 South Korea
| | - Myung-Hee Moon
- Korea Zoonoses Research Institute, Bio-Safety Research Institute, College of Veterinary Medicine; Chonbuk National University; Jeonju Jeonbuk 561-756 South Korea
| | - Yang-Gyu Park
- Korea Zoonoses Research Institute, Bio-Safety Research Institute, College of Veterinary Medicine; Chonbuk National University; Jeonju Jeonbuk 561-756 South Korea
| | - Ju-Hee Lee
- Korea Zoonoses Research Institute, Bio-Safety Research Institute, College of Veterinary Medicine; Chonbuk National University; Jeonju Jeonbuk 561-756 South Korea
| | - You-Jin Lee
- Korea Zoonoses Research Institute, Bio-Safety Research Institute, College of Veterinary Medicine; Chonbuk National University; Jeonju Jeonbuk 561-756 South Korea
| | - Jae-Won Seol
- Korea Zoonoses Research Institute, Bio-Safety Research Institute, College of Veterinary Medicine; Chonbuk National University; Jeonju Jeonbuk 561-756 South Korea
| | - Sang-Youel Park
- Korea Zoonoses Research Institute, Bio-Safety Research Institute, College of Veterinary Medicine; Chonbuk National University; Jeonju Jeonbuk 561-756 South Korea
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41
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Jeong JK, Moon MH, Lee YJ, Seol JW, Park SY. Melatonin-induced autophagy protects against human prion protein-mediated neurotoxicity. J Pineal Res 2012; 53:138-46. [PMID: 22335252 DOI: 10.1111/j.1600-079x.2012.00980.x] [Citation(s) in RCA: 57] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
Melatonin has neuroprotective effects in the models of neurodegenerative disease including Alzheimer's and Parkinson's disease. Several studies have shown that melatonin prevents neurodegeneration by regulation of mitochondrial function. However, the protective action of melatonin has not been reported in prion disease. We investigated the influence of melatonin on prion-mediated neurotoxicity. Melatonin rescued neuronal cells from PrP(106-126)-induced neurotoxicity by prevention of mitochondrial dysfunction. Moreover, the protective effect of melatonin against mitochondrial dysfunction was related with autophagy activation. Melatonin-treated cells were dose-dependently increased in LC3-II, an autophagy marker. Melatonin-induced autophagy prevented a PrP(106-126)-induced reduction in mitochondrial potential and translocation of Bax to the mitochondria and cytochrome c release. On the other hand, downregulation of autophagy protein 5 with Atg5 siRNA or the autophagy blocker 3-methyladenine prevented the melatonin-mediated neuroprotective effects. This is the first report demonstrating that treatment with melatonin appears to protect against prion-mediated neurotoxicity and that the neuroprotection is induced by melatonin-mediated autophagy signals. The results of this study suggest that regulation of melatonin is a therapeutic strategy for prion peptide-induced apoptosis.
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Affiliation(s)
- Jae-Kyo Jeong
- Korea Zoonoses Research Institute, Bio-Safety Research Institute, Center for Healthcare Technology Development, College of Veterinary Medicine, Chonbuk National University, Jeonju, Korea
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42
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García-Santos G, Martin V, Rodríguez-Blanco J, Herrera F, Casado-Zapico S, Sánchez-Sánchez AM, Antolín I, Rodríguez C. Fas/Fas ligand regulation mediates cell death in human Ewing's sarcoma cells treated with melatonin. Br J Cancer 2012; 106:1288-96. [PMID: 22382690 PMCID: PMC3314785 DOI: 10.1038/bjc.2012.66] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023] Open
Abstract
Background: Despite recent advances in cancer therapy, the 5-year survival rate for Ewing's sarcoma is still very low, and new therapeutic approaches are necessary. It was found previously that melatonin induces cell death in the Ewing's sarcoma cell line, SK-N-MC, by activating the extrinsic apoptotic pathway. Methods: Melatonin actions were analysed by metabolic viability/survival cell assays, flow cytometry, quantitative PCR for mRNA expression, western blot for protein activation/expression and electrophoretic mobility shift assay for transcription factor activation. Results: Melatonin increases the expression of Fas and its ligand Fas L, this increase being responsible for cell death induced by the indolamine. Melatonin also produces a transient increase in intracellular oxidants and activation of the redox-regulated transcription factor Nuclear factor-kappaB. Inhibition of such activation prevents cell death and Fas/Fas L upregulation. Cytotoxic effect and Fas/Fas L regulation occur in all Ewing's cell lines studied, and do not occur in the other tumour cell lines studied where melatonin does not induce cell death. Conclusion: Our data offers new insights in the study of alternative therapeutic strategies in the treatment of Ewing's sarcoma. Further attention deserves to be given to the differences in the cellular biology of sensitive tumours that could explain the cytotoxic effect of melatonin and the increase in the level of free radicals caused by this molecule, in particular cancer types.
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Affiliation(s)
- G García-Santos
- Departamento de Morfología y Biología Celular, Facultad de Medicina, Universidad de Oviedo, C/ Julian Claveria 6, 33006 Oviedo, Spain
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43
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Shim S, Kwon J. Effects of [6]-shogaol on cholinergic signaling in HT22 cells following neuronal damage induced by hydrogen peroxide. Food Chem Toxicol 2012; 50:1454-9. [PMID: 22381256 DOI: 10.1016/j.fct.2012.02.014] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2011] [Revised: 02/08/2012] [Accepted: 02/10/2012] [Indexed: 02/07/2023]
Abstract
Cholinergic neurons play a major role in memory and attention. The dysfunction and death of these neurons, especially in the hippocampus, are thought to contribute to the pathophysiology of memory deficits associated with Alzheimer's disease (AD). Therefore, studying the cholinergic properties and cell survival may help in treating this disease. We investigated the possible effects of [6]-shogaol on cholinergic signaling in HT22 hippocampal neuronal cells. HT22 cells express essential cholinergic markers, including choline acetyltransferase (ChAT) and choline transporter (ChTp). HT22 cells treated with H(2)O(2) for 3h showed an increase in ROS production (35%). These features were partly recovered by [6]-shogaol. Treating H(2)O(2)-treated HT22 cells with [6]-shogaol markedly increased the expression of ChAT and ChTp, an effect similar to that of brain-derived neurotrophic factor (BDNF). Furthermore, K-252a, an inhibitor of the BDNF receptor Trk B, attenuated the effects of both [6]-shogaol and BDNF. These data suggest that [6]-shogaol protects neurons by increasing ChAT and ChTp expression through a BDNF increase and thus may be useful for treating neurodegenerative diseases.
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Affiliation(s)
- Sehwan Shim
- Department of Laboratory Animal Medicine, College of Veterinary Medicine, Chonbuk National University, Jeonju 561 756, Republic of Korea
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44
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Involvement of melatonin in autophagy-mediated mouse hepatoma H22 cell survival. Int Immunopharmacol 2012; 12:394-401. [DOI: 10.1016/j.intimp.2011.12.012] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2011] [Revised: 11/18/2011] [Accepted: 12/16/2011] [Indexed: 12/11/2022]
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45
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Abstract
Melatonin is an antioxidant that has neuroprotective functions in ischemic brain injury. Protein phosphatase 2A (PP2A) is a serine and threonine phosphatase that modulates cell metabolism and cell survival. This study investigated whether melatonin modulates PP2A subunit B in focal cerebral ischemia and glutamate toxicity-induced neuronal cell death in a rat model. Middle cerebral artery occlusion (MCAO) was performed to induce permanent cerebral ischemic injury. Adult male rats were treated with vehicle or melatonin (5 mg/kg) prior to MCAO, and cerebral cortex tissues were collected 24 hr after MCAO. A proteomic approach elucidated the decrease in PP2A subunit B in MCAO-operated animals. Melatonin treatment attenuated injury-induced reductions in PP2A subunit B levels. Western blot analyses indicated that melatonin prevents injury-induced decrease in PP2A subunit B levels. In neuronal cells, glutamate toxicity induced a lowering of PP2A subunit B, while melatonin treatment attenuated the glutamate exposure-induced decreases in PP2A subunit B. These results suggest that the maintenance of PP2A subunit B by melatonin in ischemic injury is critical to the neuroprotective function of melatonin during neuronal cell damage.
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Affiliation(s)
- Phil-Ok Koh
- Department of Anatomy, College of Veterinary Medicine and Research Institute of Life Science, Gyeongsang National University, Jinju, South Korea.
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46
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Xu SC, He MD, Lu YH, Li L, Zhong M, Zhang YW, Wang Y, Yu ZP, Zhou Z. Nickel exposure induces oxidative damage to mitochondrial DNA in Neuro2a cells: the neuroprotective roles of melatonin. J Pineal Res 2011; 51:426-33. [PMID: 21797922 DOI: 10.1111/j.1600-079x.2011.00906.x] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Recent studies suggest that oxidative stress and mitochondrial dysfunction play important roles in the neurotoxicity of nickel. Because mitochondrial DNA (mtDNA) is highly vulnerable to oxidative stress and melatonin can efficiently protect mtDNA against oxidative damage in various pathological conditions, the aims of this study were to determine whether mtDNA oxidative damage was involved in the neurotoxicity of nickel and to assay the neuroprotective effects of melatonin in mtDNA. In this study, we exposed mouse neuroblastoma cell lines (Neuro2a) to different concentrations of nickel chloride (NiCl(2), 0.125, 0.25, and 0.5 mm) for 24 hr. We found that nickel significantly increased reactive oxygen species (ROS) production and mitochondrial superoxide levels. In addition, nickel exposure increased mitochondrial 8-hydroxyguanine (8-OHdG) content and reduced mtDNA content and mtDNA transcript levels. Consistent with this finding, nickel was found to destroy mtDNA nucleoid structure and decrease protein levels of Tfam, a key protein component for nucleoid organization. However, all the oxidative damage to mtDNA induced by nickel was efficiently attenuated by melatonin pretreatment. Our results suggest that oxidative damage to mtDNA may account for the neurotoxicity of nickel. Melatonin has great pharmacological potential in protecting mtDNA against the adverse effects of nickel in the nervous system.
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Affiliation(s)
- Shang-Cheng Xu
- Department of Occupational Health, Third Military Medical University, Chongqing, China
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47
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Abstract
Melatonin functions as a free-radical scavenger and has a neuroprotective effect against ischemic brain damage. PEA-15 (phosphoprotein enriched in astrocytes 15) regulates various cellular processes including cell proliferation and apoptosis. In this study, we investigated whether melatonin regulates the levels of PEA-15 and the two phosphorylated forms of PEA-15 (Ser 104 and Ser 116) in a middle cerebral artery occlusion (MCAO)-induced injury model and neuronal cells exposed to glutamate. Adult male rats were treated with vehicle or melatonin (5 mg/kg) prior to MCAO, and cerebral cortex tissues were collected 24 h after MCAO. PEA-15 levels after ischemic brain injury were monitored using a proteomic approach. Melatonin pretreatment prevented the ischemic injury-induced reduction in PEA-15 levels. Moreover, Western blot analysis demonstrated that melatonin attenuated the ischemic injury-induced reduction in PEA-15, phospho-PEA-15 (Ser 104), and phospho-PEA-15 (Ser 116) levels. Neuronal cells exposed to glutamate showed decreased expression of PEA-15, phospho-PEA-15 (Ser 104), and phospho-PEA-15 (Ser 116), while melatonin pretreatment prevented the glutamate toxicity-induced decreases in the levels of these proteins. The reduction in the levels of phospho-PEA-15 proteins indicates the inhibition of anti-apoptotic function of PEA-15. Together, in vivo and in vitro results suggest that melatonin protects neurons against ischemic injury by maintaining levels of phospho-PEA-15 proteins.
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Affiliation(s)
- Phil-Ok Koh
- Department of Anatomy, College of Veterinary Medicine and Research Institute of Life Science, Gyeongsang National University, Jinju, South Korea.
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48
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Single-nucleotide polymorphisms and mRNA expression for melatonin synthesis rate-limiting enzyme in recurrent depressive disorder. J Pineal Res 2010; 48:311-7. [PMID: 20433639 DOI: 10.1111/j.1600-079x.2010.00754.x] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Abstract
Depressive disorder (DD) is characterised by disturbances in blood melatonin concentration. It is well known that melatonin is involved in the control of circadian rhythms, sleep included. The use of melatonin and its analogues has been found to be effective in depression therapy. Melatonin synthesis is a multistage process, where the last stage is catalysed by acetylserotonin methyltransferase (ASMT), the reported rate-limiting melatonin synthesis enzyme. Taking into account the significance of genetic factors in depression development, the gene for ASMT may become an interesting focus for studies in patients with recurrent DD. The goal of the study was to evaluate two single-nucleotide polymorphisms (SNPs) (rs4446909; rs5989681) of the ASMT gene, as well as mRNA expression for ASMT in recurrent DD-affected patients. We genotyped two polymorphisms in a group of 181 recurrent DD patients and in 149 control subjects. The study was performed using the polymerase chain reaction/restriction fragment length polymorphism method. The distribution of genotypes in both studied SNPs in the ASMT gene differed significantly between DD and healthy subjects. The presence of AA genotype of rs4446909 polymorphism and of GG genotype of rs5989681 polymorphism was associated with lower risk for having recurrent DD. In turn, patients with depression were characterised by reduced mRNA expression for ASMT. In addition, ASMT transcript level in both recurrent DD patients and in healthy subjects depended significantly on genotype distributions in both polymorphisms. In conclusion, our results suggest the ASMT gene as a susceptibility gene for recurrent DD.
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49
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Xu SC, He MD, Zhong M, Zhang YW, Wang Y, Yang L, Yang J, Yu ZP, Zhou Z. Melatonin protects against Nickel-induced neurotoxicity in vitro by reducing oxidative stress and maintaining mitochondrial function. J Pineal Res 2010; 49:86-94. [PMID: 20536687 DOI: 10.1111/j.1600-079x.2010.00770.x] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Nickel is a potential neurotoxic pollutant. Oxidative stress is supposed to be involved in the mechanism underlying nickel-induced neurotoxicity. Melatonin has efficient protective effects against various oxidative damages in nervous system. The purpose of this study was to investigate whether melatonin could efficiently protect against neurotoxicity induced by nickel. Here, we exposed primary cultured cortical neurons and mouse neuroblastoma cell lines (neuro2a) to different concentrations of nickel chloride (NiCl(2)) (0.125, 0.25, 0.5, and 1 mm) for 12 hr or 0.5 mm NiCl(2) for various periods (0, 3, 6, 12, and 24 hr). We found that nickel significantly increased reactive oxygen species production and caused the loss of cell viability both in cortical neurons and neuro2a cells. In addition, nickel exposure obviously inhibited the mitochondrial function, disrupted the mitochondrial membrane potential (DeltaPsim), reduced ATP production, and decreased mitochondrial DNA (mtDNA) content. However, each of these oxidative damages was efficiently attenuated by melatonin pretreatment. These protective effects of melatonin may be attributable to its roles in reducing oxidative stress and improving mitochondrial function in nickel-treated nerve cells. Our results suggested that melatonin may have great pharmacological potential in protecting against the adverse effects of nickel in the nervous system.
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Affiliation(s)
- Shang-Cheng Xu
- Department of Occupational Health, Third Military Medical University, Chongqing, China
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50
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Fukui M, Zhu BT. Mitochondrial superoxide dismutase SOD2, but not cytosolic SOD1, plays a critical role in protection against glutamate-induced oxidative stress and cell death in HT22 neuronal cells. Free Radic Biol Med 2010; 48:821-30. [PMID: 20060889 PMCID: PMC2861908 DOI: 10.1016/j.freeradbiomed.2009.12.024] [Citation(s) in RCA: 102] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/05/2009] [Revised: 12/10/2009] [Accepted: 12/30/2009] [Indexed: 11/20/2022]
Abstract
Oxidative cell death is an important contributing factor in neurodegenerative diseases. Using HT22 mouse hippocampal neuronal cells as a model, we sought to demonstrate that mitochondria are crucial early targets of glutamate-induced oxidative cell death. We show that when HT22 cells were transfected with shRNA for knockdown of the mitochondrial superoxide dismutase (SOD2), these cells became more susceptible to glutamate-induced oxidative cell death. The increased susceptibility was accompanied by increased accumulation of mitochondrial superoxide and loss of normal mitochondrial morphology and function at early time points after glutamate exposure. However, overexpression of SOD2 in these cells reduced the mitochondrial superoxide level, protected mitochondrial morphology and functions, and provided resistance against glutamate-induced oxidative cytotoxicity. The change in the sensitivity of these SOD2-altered HT22 cells was neurotoxicant-specific, because the cytotoxicity of hydrogen peroxide was not altered in these cells. In addition, selective knockdown of the cytosolic SOD1 in cultured HT22 cells did not appreciably alter their susceptibility to either glutamate or hydrogen peroxide. These findings show that the mitochondrial SOD2 plays a critical role in protecting neuronal cells from glutamate-induced oxidative stress and cytotoxicity. These data also indicate that mitochondria are important early targets of glutamate-induced oxidative neurotoxicity.
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Affiliation(s)
- Masayuki Fukui
- Department of Pharmacology, Toxicology and Therapeutics, School of Medicine, University of Kansas Medical Center, Kansas City, KS 66160, USA
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