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Dubey H, Dubey A, Gulati K, Ray A. S-nitrosoglutathione modulates HDAC2 and BDNF levels in the brain and improves cognitive deficits in experimental model of Alzheimer's disease in rats. Int J Neurosci 2024; 134:777-785. [PMID: 36408590 DOI: 10.1080/00207454.2022.2150190] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2022] [Revised: 11/02/2022] [Accepted: 11/10/2022] [Indexed: 11/22/2022]
Abstract
AIM Alzheimer's disease (AD) is a neurodegenerative disorder which is characterized by cognitive deficits and abnormal memory formation. Histone acetylation is essential for hippocampal memory formation and improving the cognitive deficits, and histone deacetylase 2 (HDAC2) is increased in the hippocampus of AD patients. The present study evaluated the effects of the nitric oxide (NO) mimetics, L-arginine and the nitrosothiol NO donor, s-nitrosoglutathione (GSNO), on memory and brain HDAC2 levels in experimental animal model of sporadic Alzheimer's disease (sAD). METHODS AD was induced experimentally in rats by intracerebroventricular injection of streptozotocin (STZ, 3mg/kg). The effects of NO mimetics, GSNO and L-arginine, were assessed on STZ induced cognitive deficits in the Morris water maze (MWM) test, and, following this, the hippocampal homogenates were assayed for amyloid-β, brain derived neurotropic factor (BDNF) and HDAC2 levels. The neurobehavioral and biochemical data of the drug treated groups were compared with those of experimental control group. RESULTS The results showed that icv-STZ induced cognitive deficits were differentially attenuated by GSNO (50µg/kg) and, to a lesser extent, L-arginine (100mg/kg) with improvement in the spatial learning tasks in MWM test. These behavioral changes were associated with decreased levels of biochemical markers viz. amyloid β, BDNF and HDAC2 levels in hippocampus. CONCLUSIONS It is inferred that NO donors like GSNO could influence AD pathophysiology via epigenetic modification of HDAC2 inhibition.
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Affiliation(s)
- Harikesh Dubey
- Department of Pharmacology, Vallabhbhai Patel Chest Institute, University of Delhi, Delhi, India
- Institute for Quantitative Health Sciences and Engineering, Michigan State University, East Lansing, MI, USA
| | - Anamika Dubey
- Department of Pharmacology, Vallabhbhai Patel Chest Institute, University of Delhi, Delhi, India
| | - Kavita Gulati
- Department of Pharmacology, Vallabhbhai Patel Chest Institute, University of Delhi, Delhi, India
| | - Arunabha Ray
- Department of Pharmacology, Vallabhbhai Patel Chest Institute, University of Delhi, Delhi, India
- Department of Pharmacology, Hamdard Institute of Medical Sciences and Research, Hamdard University, New Delhi, India
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2
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Francis G, Petrovic P, Lundström JN, Thunell E. Induction of nitric oxide via humming does not improve short-term cognitive performance or influence emotional processing. PLoS One 2024; 19:e0301268. [PMID: 38573928 PMCID: PMC10994277 DOI: 10.1371/journal.pone.0301268] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2023] [Accepted: 03/13/2024] [Indexed: 04/06/2024] Open
Abstract
Nitric oxide (NO) is involved in a variety of biological functions including blood vessel dilation and neurotransmitter release. In animals, NO has been demonstrated to affect multiple behavioral outcomes, such as memory performance and arousal, whereas this link is less explored in humans. NO is created in the paranasal sinuses and studies show that humming releases paranasal NO to the nasal tract and that NO can then cross the blood brain barrier. Akin to animal models, we hypothesized that this NO may traverse into the brain and positively affect information processing. In contrast to our hypothesis, an articulatory suppression memory paradigm and a speeded detection task found deleterious effects of humming while performing the task. Likewise, we found no effect of humming on emotional processing of photos. In a fourth experiment, participants hummed before each trial in a speeded detection task, but we again found no effect on response time. In conclusion, either nasal NO does not travel to the brain, or NO in the brain does not have the expected impact on cognitive performance and emotional processing in humans. It remains possible that NO influences other cognitive processes not tested for here.
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Affiliation(s)
- Gregory Francis
- Department of Psychological Sciences, Purdue University, West Lafayette, Indiana, United States of America
| | - Predrag Petrovic
- Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden
| | - Johan N. Lundström
- Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden
- Monell Chemical Senses Center, Philadelphia, PA, United States of America
| | - Evelina Thunell
- Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden
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3
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Iova OM, Marin GE, Lazar I, Stanescu I, Dogaru G, Nicula CA, Bulboacă AE. Nitric Oxide/Nitric Oxide Synthase System in the Pathogenesis of Neurodegenerative Disorders-An Overview. Antioxidants (Basel) 2023; 12:antiox12030753. [PMID: 36979000 PMCID: PMC10045816 DOI: 10.3390/antiox12030753] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2023] [Revised: 02/24/2023] [Accepted: 03/15/2023] [Indexed: 03/30/2023] Open
Abstract
Nitric oxide, a ubiquitous molecule found throughout the natural world, is a key molecule implicated in many central and benefic molecular pathways and has a well-established role in the function of the central nervous system, as numerous studies have previously shown. Dysregulation of its metabolism, mainly the upregulation of nitric oxide production, has been proposed as a trigger and/or aggravator for many neurological affections. Increasing evidence supports the implication of this molecule in prevalent neurodegenerative diseases, such as Parkinson's disease, Alzheimer's disease, or amyotrophic lateral sclerosis. The mechanisms proposed for its neurotoxicity mainly center around the increased quantities of nitric oxide that are produced in the brain, their cause, and, most importantly, the pathological metabolic cascades created. These cascades lead to the formation of neuronal toxic substances that impair the neurons' function and structure on multiple levels. The purpose of this review is to present the main causes of increased pathological production, as well as the most important pathophysiological mechanisms triggered by nitric oxide, mechanisms that could help explain a part of the complex picture of neurodegenerative diseases and help develop targeted therapies.
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Affiliation(s)
- Olga-Maria Iova
- Faculty of Medicine, Iuliu Hatieganu University of Medicine and Pharmacy, 400349 Cluj-Napoca, Romania
| | - Gheorghe-Eduard Marin
- Faculty of Medicine, Iuliu Hatieganu University of Medicine and Pharmacy, 400349 Cluj-Napoca, Romania
| | - Izabella Lazar
- Faculty of Medicine, Iuliu Hatieganu University of Medicine and Pharmacy, 400349 Cluj-Napoca, Romania
| | - Ioana Stanescu
- Department of Neurology, Iuliu Haţieganu University of Medicine and Pharmacy, 400012 Cluj-Napoca, Romania
| | - Gabriela Dogaru
- Department of Physical Medicine and Rehabilitation, Iuliu Haţieganu University of Medicine and Pharmacy Cluj-Napoca, Viilor Street, No. 46-50, 400347 Cluj-Napoca, Romania
| | - Cristina Ariadna Nicula
- Department of Ophthalmology, Iuliu Hațieganu University of Medicine and Pharmacy, 400012 Cluj-Napoca, Romania
| | - Adriana Elena Bulboacă
- Department of Pathophysiology, Iuliu Hațieganu University of Medicine and Pharmacy, 400012 Cluj-Napoca, Romania
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4
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Gao P, Luo X, Yin B, Jiao Z, Piao J, Zhao A, Yang P. Effects of Coupled-/soluble-Copper, Generating from Copper-doped Titanium Dioxide Nanotubes on Cell Response. RECENT PATENTS ON NANOTECHNOLOGY 2023; 17:150-158. [PMID: 35034600 DOI: 10.2174/1872210516666220114120412] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/17/2021] [Revised: 08/24/2021] [Accepted: 11/30/2021] [Indexed: 06/14/2023]
Abstract
BACKGROUND Endothelialization in vitro is a very common method for surface modification of cardiovascular materials. However, mature endothelial cells are not suitable because of the difficulty in obtaining and immunogenicity. METHODS In this patent work, we determined the appropriate amount of copper by constructing a copper- loaded titanium dioxide nanotube array that can catalyze the release of nitric oxide, compared the effects of coupled-/soluble-copper on stem cells, and then induced stem cells to differentiate into endothelial cells. RESULTS The results showed that it had a strong promotion effect on the differentiation of stem cells into endothelial cells, which might be used for endothelialization in vitro. CONCLUSION SEM and EDS results prove that a high content of copper ions are indeed doped onto the surface of nanotubes with small amounts of Cu release. The release of NO confirms that the release of several samples within a period of time is within the physiological concentration.
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Affiliation(s)
- Pengyu Gao
- Key Lab. for Advanced Technologies of Materials, Ministry of Education, School of Material Sciences and Engineering, Southwest Jiaotong University, Chengdu, Sichuan, P.R. China
| | - Xiao Luo
- Key Lab. for Advanced Technologies of Materials, Ministry of Education, School of Material Sciences and Engineering, Southwest Jiaotong University, Chengdu, Sichuan, P.R. China
| | - Benli Yin
- Key Lab. for Advanced Technologies of Materials, Ministry of Education, School of Material Sciences and Engineering, Southwest Jiaotong University, Chengdu, Sichuan, P.R. China
| | - Zhisha Jiao
- Nanyang Grain and Oil Quality Inspection Center, Nanyang, Henan, P.R. China
| | - JunJi Piao
- Department of Materials Science and Engineering, Chonnam National University, Gwangju, South Korea
| | - Ansha Zhao
- Key Lab. for Advanced Technologies of Materials, Ministry of Education, School of Material Sciences and Engineering, Southwest Jiaotong University, Chengdu, Sichuan, P.R. China
| | - Ping Yang
- Key Lab. for Advanced Technologies of Materials, Ministry of Education, School of Material Sciences and Engineering, Southwest Jiaotong University, Chengdu, Sichuan, P.R. China
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5
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Rajendra A, Bondonno NP, Rainey-Smith SR, Gardener SL, Hodgson JM, Bondonno CP. Potential role of dietary nitrate in relation to cardiovascular and cerebrovascular health, cognition, cognitive decline and dementia: a review. Food Funct 2022; 13:12572-12589. [PMID: 36377891 DOI: 10.1039/d2fo02427f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
There is currently no effective treatment for dementia, of which Alzheimer's disease (AD) is the most common form. It is, therefore, imperative to focus on evidence-based preventive strategies to combat this extremely debilitating chronic disease. Nitric oxide (NO) is a key signalling molecule in the cardiovascular, cerebrovascular, and central nervous systems. Vegetables rich in nitrate, such as spinach and beetroot, are an important source of NO, with beneficial effects on validated markers of cardiovascular health and an association with a lower risk of cardiovascular disease. Given the link between cardiovascular disease risk factors and dementia, together with the important role of NO in vascular health and cognition, it is important to determine whether dietary nitrate could also improve cognitive function, markers of brain health, and lower risk of dementia. This review presents an overview of NO's role in the cardiovascular, cerebrovascular, and central nervous systems; an overview of the available evidence that nitrate, through effects on NO, improves cardiovascular health; and evaluates the current evidence regarding dietary nitrate's potential role in cerebrovascular health, cognitive function, and brain health assessed via biomarkers.
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Affiliation(s)
- Anjana Rajendra
- Nutrition & Health Innovation Research Institute, School of Medical and Health Sciences, Edith Cowan University, Perth, Australia.
| | - Nicola P Bondonno
- Nutrition & Health Innovation Research Institute, School of Medical and Health Sciences, Edith Cowan University, Perth, Australia. .,Danish Cancer Society Research Center, Copenhagen, Denmark
| | - Stephanie R Rainey-Smith
- Centre for Healthy Ageing, Health Futures Institute, Murdoch University, Murdoch, Western Australia, Australia.,Australian Alzheimer's Research Foundation, Perth, Western Australia, Australia.,Centre of Excellence for Alzheimer's Disease Research & Care, School of Medical and Health Sciences, Edith Cowan University, Joondalup, Western Australia, Australia.,Lifestyle Approaches Towards Cognitive Health Research Group, Murdoch University, Murdoch, Western Australia, Australia.,School of Psychological Science, University of Western Australia, Perth, Western Australia, Australia
| | - Samantha L Gardener
- Australian Alzheimer's Research Foundation, Perth, Western Australia, Australia.,Centre of Excellence for Alzheimer's Disease Research & Care, School of Medical and Health Sciences, Edith Cowan University, Joondalup, Western Australia, Australia.,Lifestyle Approaches Towards Cognitive Health Research Group, Murdoch University, Murdoch, Western Australia, Australia
| | - Jonathan M Hodgson
- Nutrition & Health Innovation Research Institute, School of Medical and Health Sciences, Edith Cowan University, Perth, Australia. .,Medical School, The University of Western Australia, Royal Perth Hospital Research Foundation, Perth, Western Australia, Australia
| | - Catherine P Bondonno
- Nutrition & Health Innovation Research Institute, School of Medical and Health Sciences, Edith Cowan University, Perth, Australia. .,Medical School, The University of Western Australia, Royal Perth Hospital Research Foundation, Perth, Western Australia, Australia
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Kozlova AA, Ragavan VN, Jarzebska N, Lukianova IV, Bikmurzina AE, Rubets E, Suzuki-Yamamoto T, Kimoto M, Mangoni AA, Gainetdinov RR, Weiss N, Bauer M, Markov AG, Rodionov RN, Bernhardt N. Divergent Dimethylarginine Dimethylaminohydrolase Isoenzyme Expression in the Central Nervous System. Cell Mol Neurobiol 2022; 42:2273-2288. [PMID: 34014421 PMCID: PMC9418281 DOI: 10.1007/s10571-021-01101-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2021] [Accepted: 05/09/2021] [Indexed: 11/20/2022]
Abstract
The endogenous methylated derivative of ʟ-arginine, Nω,Nω'-dimethyl-ʟ-arginine (asymmetric dimethylarginine, ADMA), an independent risk factor in many diseases, inhibits the activity of nitric oxide synthases and, consequently, modulates the availability of nitric oxide. While most studies on the biological role of ADMA have focused on endothelial and inducible nitric oxide synthases modulation and its contribution to cardiovascular, metabolic, and renal diseases, a role in regulating neuronal nitric oxide synthases and pathologies of the central nervous system is less understood. The two isoforms of dimethylarginine dimethylaminohydrolase (DDAH), DDAH1 and DDAH2, are thought to be the main enzymes responsible for ADMA catabolism. A current impediment is limited knowledge on specific tissue and cellular distribution of DDAH enzymes within the brain. In this study, we provide a detailed characterization of the regional and cellular distribution of DDAH1 and DDAH2 proteins in the adult murine and human brain. Immunohistochemical analysis showed a wide distribution of DDAH1, mapping to multiple cell types, while DDAH2 was detected in a limited number of brain regions and exclusively in neurons. Our results provide key information for the investigation of the pathophysiological roles of the ADMA/DDAH system in neuropsychiatric diseases and pave the way for the development of novel selective therapeutic approaches.
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Affiliation(s)
- Alena A Kozlova
- Department of Psychiatry and Psychotherapy, University Hospital Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany
- Institute of Translational Biomedicine and Saint-Petersburg University Hospital, Saint-Petersburg State University, Saint-Petersburg, Russia
| | - Vinitha N Ragavan
- University Centre for Vascular Medicine and Department of Internal Medicine, Technische Universität Dresden, Dresden, Germany
- Department of Clinical Pharmacology, College of Medicine and Public Health, Flinders University and Flinders Medical Centre, Adelaide, Australia
| | - Natalia Jarzebska
- University Centre for Vascular Medicine and Department of Internal Medicine, Technische Universität Dresden, Dresden, Germany
- Department of Anesthesiology and Intensive Care Medicine, University Hospital Cart Gustav Carus, Technische Universität Dresden, Dresden, Germany
| | - Iana V Lukianova
- Department of Psychiatry and Psychotherapy, University Hospital Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany
| | - Anastasia E Bikmurzina
- Department of General Physiology, Saint-Petersburg State University, 199034, Saint-Petersburg, Russia
| | - Elena Rubets
- University Centre for Vascular Medicine and Department of Internal Medicine, Technische Universität Dresden, Dresden, Germany
- Department of General Physiology, Saint-Petersburg State University, 199034, Saint-Petersburg, Russia
| | - Toshiko Suzuki-Yamamoto
- Department of Nutritional Science, Faculty of Health and Welfare Science, Okayama Prefectural University, Okayama, Japan
| | - Masumi Kimoto
- Department of Nutritional Science, Faculty of Health and Welfare Science, Okayama Prefectural University, Okayama, Japan
| | - Arduino A Mangoni
- Department of Clinical Pharmacology, College of Medicine and Public Health, Flinders University and Flinders Medical Centre, Adelaide, Australia
| | - Raul R Gainetdinov
- Institute of Translational Biomedicine and Saint-Petersburg University Hospital, Saint-Petersburg State University, Saint-Petersburg, Russia
| | - Norbert Weiss
- University Centre for Vascular Medicine and Department of Internal Medicine, Technische Universität Dresden, Dresden, Germany
| | - Michael Bauer
- Department of Psychiatry and Psychotherapy, University Hospital Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany
| | - Alexander G Markov
- Department of General Physiology, Saint-Petersburg State University, 199034, Saint-Petersburg, Russia
| | - Roman N Rodionov
- University Centre for Vascular Medicine and Department of Internal Medicine, Technische Universität Dresden, Dresden, Germany
- Department of Clinical Pharmacology, College of Medicine and Public Health, Flinders University and Flinders Medical Centre, Adelaide, Australia
| | - Nadine Bernhardt
- Department of Psychiatry and Psychotherapy, University Hospital Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany.
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7
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Martin RM, Bereman MS, Marsden KC. The Cyanotoxin 2,4-DAB Reduces Viability and Causes Behavioral and Molecular Dysfunctions Associated with Neurodegeneration in Larval Zebrafish. Neurotox Res 2022; 40:347-364. [PMID: 35029765 PMCID: PMC9035002 DOI: 10.1007/s12640-021-00465-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2021] [Revised: 11/30/2021] [Accepted: 12/16/2021] [Indexed: 12/12/2022]
Abstract
Exposure to cyanotoxins has been linked to neurodegenerative diseases, including amyotrophic lateral sclerosis, Alzheimer's, and Parkinson's disease. While the cyanotoxin β-methylamino-L-alanine (BMAA) has received much attention, cyanobacteria produce many cyanotoxic compounds, several of which have been detected in nature alongside BMAA, including 2,4-diaminobutyric acid (2,4-DAB) and N-(2-aminoethyl)glycine (AEG). Thus, the question of whether 2,4-DAB and AEG also cause neurotoxic effects in vivo is of great interest, as is the question of whether they interact to enhance toxicity. Here, we evaluate the toxic and neurotoxic effects of these cyanotoxins alone or in combination by measuring zebrafish larval viability and behavior after exposure. 2,4-DAB was the most potent cyanotoxin as it decreased larval viability by approximately 50% at 6 days post fertilization, while BMAA and AEG decreased viability by just 16% and 8%, respectively. Although we only observed minor neurotoxic effects on spontaneous locomotion, BMAA and AEG enhanced acoustic startle sensitivity, and they interacted in an additive manner to exert their effects. 2,4-DAB; however, only modulated startle kinematics, an indication of motor dysfunction. To investigate the mechanisms of 2,4-DAB's effects, we analyzed the protein profile of larval zebrafish exposed to 500 µM 2,4-DAB at two time points and identified molecular signatures consistent with neurodegeneration, including disruption of metabolic pathways and downregulation of the ALS-associated genes SOD1 and UBQLN4. Together, our data demonstrate that BMAA and its isomers AEG and 2,4-DAB cause neurotoxic effects in vivo, with 2,4-DAB as the most potent of the three in the zebrafish model.
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Affiliation(s)
- Rubia M Martin
- Department of Biological Sciences, North Carolina State University, Raleigh, NC, USA
| | - Michael S Bereman
- Department of Biological Sciences, North Carolina State University, Raleigh, NC, USA
| | - Kurt C Marsden
- Department of Biological Sciences, North Carolina State University, Raleigh, NC, USA.
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Zarrindast MR, Fazli-Tabaei S, Khakpai F. Synergistic effect between quinpirole and L-NAME as well as sulpiride and L-arginine on the modulation of anxiety and memory processes in the 6-OHDA mouse model of Parkinson's disease: An isobologram analysis. Neurobiol Learn Mem 2021; 186:107538. [PMID: 34737042 DOI: 10.1016/j.nlm.2021.107538] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2020] [Revised: 09/03/2021] [Accepted: 10/05/2021] [Indexed: 10/20/2022]
Abstract
We evaluated interactions between dopamine D2 receptor and nitric oxide (NO) actions on the regulation of anxiety and memory in the 6-hydroxydopamine (6-OHDA) mouse model of Parkinson's disease (PD). A unilateral guide cannula was stereotaxically implanted over the right striatum. Elevated plus-maze test (EPM) test-retest protocol was employed to evaluate anxiety and memory in mice. The results revealed that injection of L-NAME (9 mg/kg) induced anxiolytic and amnesic effects, while L-arginine (9 mg/kg) produced anxiogenic and memory-improvement effects in the 6-OHDA mouse model of PD. Administration of sulpiride (20 mg/kg) induced anxiogenic and memory-improvement effects, whereas quinpirole (20 mg/kg) caused anxiolytic and amnesic effects in PD mice. Co-injection of sulpiride (5, 10, and 20 mg/kg) plus L-NAME (3 mg/kg) induced anxiolytic and amnesic effects. Co-injection of sulpiride (20 mg/kg) plus L-arginine (3 mg/kg) induced anxiogenic and memory-improvement effects. Co-administrations of quinpirole (20 mg/kg) and L-NAME (3 mg/kg) induced anxiolytic effect, but co-administration of quinpirole (20 mg/kg) plus L-arginine (3 mg/kg) caused anxiogenic and memory-improvement effects. The isobologram analysis revealed that there is a synergistic effect between sulpiride and L-arginine as well as quinpirole and L-NAME upon induction of anxiogenic and anxiolytic effects, respectively in PD mice. Our results suggested: (1) NO and dopamine D2 receptor mechanisms affect anxiety and memory in PD mice; (2) L-NAME reversed anxiogenic and memory-improvement effect induced by sulpiride; (3) Anxiolytic and amnesic effects induced by quinpirole reversed by L-arginine; (4) There is a synergistic effect between dopamine D2 receptor and NO systems on the modulation of anxiety and memory.
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Affiliation(s)
- Mohammad-Reza Zarrindast
- Department of Pharmacology School of Medicine, Tehran University of Medical Sciences, Tehran, Iran; Iranian National Center for Addiction Studies, Tehran University of Medical Sciences, Tehran, Iran; Department of Neuroendocrinology, Endocrinology and Metabolism Clinical Sciences Institute, Tehran University of Medical Sciences, Tehran, Iran
| | - Soheila Fazli-Tabaei
- Department of Physiology, Faculty of Medicine, Tehran Medical Sciences, Islamic Azad University, Tehran, Iran
| | - Fatemeh Khakpai
- Cognitive and Neuroscience Research Center (CNRC), Tehran Medical Sciences, Islamic Azad University, Tehran, Iran.
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The Relationship of Glutathione- S-Transferase and Multi-Drug Resistance-Related Protein 1 in Nitric Oxide (NO) Transport and Storage. Molecules 2021; 26:molecules26195784. [PMID: 34641326 PMCID: PMC8510172 DOI: 10.3390/molecules26195784] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2021] [Revised: 09/21/2021] [Accepted: 09/21/2021] [Indexed: 12/18/2022] Open
Abstract
Nitric oxide is a diatomic gas that has traditionally been viewed, particularly in the context of chemical fields, as a toxic, pungent gas that is the product of ammonia oxidation. However, nitric oxide has been associated with many biological roles including cell signaling, macrophage cytotoxicity, and vasodilation. More recently, a model for nitric oxide trafficking has been proposed where nitric oxide is regulated in the form of dinitrosyl-dithiol-iron-complexes, which are much less toxic and have a significantly greater half-life than free nitric oxide. Our laboratory has previously examined this hypothesis in tumor cells and has demonstrated that dinitrosyl-dithiol-iron-complexes are transported and stored by multi-drug resistance-related protein 1 and glutathione-S-transferase P1. A crystal structure of a dinitrosyl-dithiol-iron complex with glutathione-S-transferase P1 has been solved that demonstrates that a tyrosine residue in glutathione-S-transferase P1 is responsible for binding dinitrosyl-dithiol-iron-complexes. Considering the roles of nitric oxide in vasodilation and many other processes, a physiological model of nitric oxide transport and storage would be valuable in understanding nitric oxide physiology and pathophysiology.
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10
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Ballodiolic Acid A and B: Two New ROS, ( •OH), (ONOO -) Scavenging and Potent Antimicrobial Constituents Isolated from Ballota pseudodictamnus (L.) Benth. Pharmaceutics 2021; 13:pharmaceutics13030402. [PMID: 34156396 PMCID: PMC8002906 DOI: 10.3390/pharmaceutics13030402] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2021] [Revised: 03/10/2021] [Accepted: 03/11/2021] [Indexed: 01/04/2023] Open
Abstract
Bioassays guided phytochemical investigations on the ethyl acetate-soluble fraction of the root material of Ballota pseudodictamnus (L.) Benth. led to the isolation of two new compounds, ballodiolic acid A (1) and ballodiolic acid B (2), along with three known compounds ballodiolic acid (3), ballotenic acid (4), and β-amyrin (5), which were also isolated for the first time from this species by using multiple chromatographic techniques. The structures of the compounds (1–5) were determined by modern spectroscopic analysis including 1D and 2D NMR techniques and chemical studies. In three separate experiments, the isolated compounds (1–5) demonstrated potent antioxidant scavenging activity, with IC50 values ranging from 07.22–34.10 μM in the hydroxyl radical (•OH) inhibitory activity test, 58.10–148.55 μM in the total ROS (reactive oxygen species) inhibitory activity test, and 6.23–69.01 μM in the peroxynitrite (ONOO−) scavenging activity test. With IC50 values of (07.22 ± 0.03, 58.10 ± 0.07, 6.23 ± 0.04 μM) for •OH, total ROS, and scavenge ONOO−, respectively, ballodiolic acid B (2) showed the highest scavenging ability. Antibacterial and antifungal behaviors were also exposed to the pure compounds 1–5. In contrast to compounds 4 and 5, compounds 1–3 were active against all bacterial strains studied, with a good zone of inhibition proving these as a potent antibacterial agent. Similarly, compared to compounds 3–5, compounds 1 and 2 with a 47 percent and 45 percent respective inhibition zone were found to be more active against tested fungal strains.
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Schmidt SD, Zinn CG, Behling JAK, Furian AF, Furini CRG, de Carvalho Myskiw J, Izquierdo I. Inhibition of PACAP/PAC1/VPAC2 signaling impairs the consolidation of social recognition memory and nitric oxide prevents this deficit. Neurobiol Learn Mem 2021; 180:107423. [PMID: 33705861 DOI: 10.1016/j.nlm.2021.107423] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2019] [Revised: 02/18/2021] [Accepted: 03/03/2021] [Indexed: 11/17/2022]
Abstract
Social recognition memory (SRM) forms the basis of social relationships of animals. It is essential for social interaction and adaptive behavior, reproduction and species survival. Evidence demonstrates that social deficits of psychiatric disorders such as autism and schizophrenia are caused by alterations in SRM processing by the hippocampus and amygdala. Pituitary Adenylate Cyclase-Activating Polypeptide (PACAP) and its receptors PAC1, VPAC1 and VPAC2 are highly expressed in these regions. PACAP is a pleiotropic neuropeptide that modulates synaptic function and plasticity and is thought to be involved in social behavior. PACAP signaling also stimulates the nitric oxide (NO) production and targets outcomes to synapses. In the present work, we investigate the effect of the infusion of PACAP-38 (endogenous neuropeptide and potent stimulator of adenylyl cyclase), PACAP 6-38 (PAC1/VPAC2 receptors antagonist) and S-Nitroso-N-acetyl-DL-penicillamine (SNAP, NO donor) in the CA1 region of the hippocampus and in the basolateral amygdala (BLA) on the consolidation of SRM. For this, male Wistar rats with cannulae implanted in CA1 or in BLA were subjected to a social discrimination paradigm, which is based on the natural ability of rodents to investigate unfamiliar conspecifics more than familiar one. In the sample phase (acquisition), animals were exposed to a juvenile conspecific for 1 h. Immediately, 60 or 150 min after, animals received one of different pharmacological treatments. Twenty-four hours later, they were submitted to a 5 min retention test in the presence of the previously presented juvenile (familiar) and a novel juvenile. Animals that received infusions of PACAP 6-38 (40 pg/side) into CA1 immediately after the sample phase or into BLA immediately or 60 min after the sample phase were unable to recognize the familiar juvenile during the retention test. This impairment was abolished by the coinfusion of PACAP 6-38 plus SNAP (5 μg/side). These results show that the blockade of PACAP/PAC1/VPAC2 signaling in the CA1 and BLA during a restricted post-acquisition time window impairs the consolidation of SRM and that the SNAP is able to abolish this deficit. Findings like this could potentially be used in the future to influence studies of psychiatric disorders involving social behavior.
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Affiliation(s)
- Scheila Daiane Schmidt
- Memory Center, Brain Institute of Rio Grande do Sul, Pontifical Catholic University of Rio Grande do Sul (PUCRS), Av. Ipiranga, 6690-2nd Floor, 90610-000 Porto Alegre, RS, Brazil.
| | - Carolina Garrido Zinn
- Memory Center, Brain Institute of Rio Grande do Sul, Pontifical Catholic University of Rio Grande do Sul (PUCRS), Av. Ipiranga, 6690-2nd Floor, 90610-000 Porto Alegre, RS, Brazil
| | - Jonny Anderson Kielbovicz Behling
- Memory Center, Brain Institute of Rio Grande do Sul, Pontifical Catholic University of Rio Grande do Sul (PUCRS), Av. Ipiranga, 6690-2nd Floor, 90610-000 Porto Alegre, RS, Brazil
| | - Ana Flávia Furian
- Laboratory of Neurotoxicity, Federal University of Santa Maria (UFSM), Av. Roraima, 1000, 97105-900 Santa Maria, RS, Brazil
| | - Cristiane Regina Guerino Furini
- Memory Center, Brain Institute of Rio Grande do Sul, Pontifical Catholic University of Rio Grande do Sul (PUCRS), Av. Ipiranga, 6690-2nd Floor, 90610-000 Porto Alegre, RS, Brazil; National Institute of Translational Neuroscience (INNT), National Research Council of Brazil, Federal University of Rio de Janeiro, 21941-902 Rio de Janeiro, Brazil
| | - Jociane de Carvalho Myskiw
- Memory Center, Brain Institute of Rio Grande do Sul, Pontifical Catholic University of Rio Grande do Sul (PUCRS), Av. Ipiranga, 6690-2nd Floor, 90610-000 Porto Alegre, RS, Brazil; National Institute of Translational Neuroscience (INNT), National Research Council of Brazil, Federal University of Rio de Janeiro, 21941-902 Rio de Janeiro, Brazil.
| | - Ivan Izquierdo
- Memory Center, Brain Institute of Rio Grande do Sul, Pontifical Catholic University of Rio Grande do Sul (PUCRS), Av. Ipiranga, 6690-2nd Floor, 90610-000 Porto Alegre, RS, Brazil; National Institute of Translational Neuroscience (INNT), National Research Council of Brazil, Federal University of Rio de Janeiro, 21941-902 Rio de Janeiro, Brazil.
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12
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Dao VTV, Elbatreek MH, Fuchß T, Grädler U, Schmidt HHHW, Shah AM, Wallace A, Knowles R. Nitric Oxide Synthase Inhibitors into the Clinic at Last. Handb Exp Pharmacol 2021; 264:169-204. [PMID: 32797331 DOI: 10.1007/164_2020_382] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The 1998 Nobel Prize in Medicine and Physiology for the discovery of nitric oxide, a nitrogen containing reactive oxygen species (also termed reactive nitrogen or reactive nitrogen/oxygen species) stirred great hopes. Clinical applications, however, have so far pertained exclusively to the downstream signaling of cGMP enhancing drugs such as phosphodiesterase inhibitors and soluble guanylate cyclase stimulators. All clinical attempts, so far, to inhibit NOS have failed even though preclinical models were strikingly positive and clinical biomarkers correlated perfectly. This rather casts doubt on our current way of target identification in drug discovery in general and our way of patient stratification based on correlating but not causal biomarkers or symptoms. The opposite, NO donors, nitrite and enhancing NO synthesis by eNOS/NOS3 recoupling in situations of NO deficiency, are rapidly declining in clinical relevance or hold promise but need yet to enter formal therapeutic guidelines, respectively. Nevertheless, NOS inhibition in situations of NO overproduction often jointly with enhanced superoxide (or hydrogen peroxide production) still holds promise, but most likely only in acute conditions such as neurotrauma (Stover et al., J Neurotrauma 31(19):1599-1606, 2014) and stroke (Kleinschnitz et al., J Cereb Blood Flow Metab 1508-1512, 2016; Casas et al., Proc Natl Acad Sci U S A 116(14):7129-7136, 2019). Conversely, in chronic conditions, long-term inhibition of NOS might be too risky because of off-target effects on eNOS/NOS3 in particular for patients with cardiovascular risks or metabolic and renal diseases. Nitric oxide synthases (NOS) and their role in health (green) and disease (red). Only neuronal/type 1 NOS (NOS1) has a high degree of clinical validation and is in late stage development for traumatic brain injury, followed by a phase II safety/efficacy trial in ischemic stroke. The pathophysiology of NOS1 (Kleinschnitz et al., J Cereb Blood Flow Metab 1508-1512, 2016) is likely to be related to parallel superoxide or hydrogen peroxide formation (Kleinschnitz et al., J Cereb Blood Flow Metab 1508-1512, 2016; Casas et al., Proc Natl Acad Sci U S A 114(46):12315-12320, 2017; Casas et al., Proc Natl Acad Sci U S A 116(14):7129-7136, 2019) leading to peroxynitrite and protein nitration, etc. Endothelial/type 3 NOS (NOS3) is considered protective only and its inhibition should be avoided. The preclinical evidence for a role of high-output inducible/type 2 NOS (NOS2) isoform in sepsis, asthma, rheumatic arthritis, etc. was high, but all clinical development trials in these indications were neutral despite target engagement being validated. This casts doubt on the role of NOS2 in humans in health and disease (hence the neutral, black coloring).
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Affiliation(s)
- Vu Thao-Vi Dao
- Department of Psychiatry, Psychosomatic Medicine and Psychotherapy, University Hospital Frankfurt, Goethe University, Frankfurt am Main, Germany
| | - Mahmoud H Elbatreek
- Department of Pharmacology and Personalised Medicine, MeHNS, FHML, Maastricht, The Netherlands.,Department of Pharmacology and Toxicology, Faculty of Pharmacy, Zagazig University, Zagazig, Egypt
| | - Thomas Fuchß
- Takeda GmbH (former Nycomed/Altana Pharma), Konstanz, Germany
| | - Ulrich Grädler
- Takeda GmbH (former Nycomed/Altana Pharma), Konstanz, Germany
| | - Harald H H W Schmidt
- Department of Pharmacology and Personalised Medicine, MeHNS, FHML, Maastricht, The Netherlands
| | - Ajay M Shah
- King's College London British Heart Foundation Centre, School of Cardiovascular Medicine and Sciences, London, UK
| | - Alan Wallace
- Health and Life Sciences, Coventry University, Coventry, UK
| | - Richard Knowles
- Knowles Consulting Ltd., The Stevenage Bioscience Catalyst, Stevenage, UK.
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13
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Zhang YF, Yang JY, Meng XP, Nie N, Tang MC, Yang XL. L-Arginine protects mouse Leydig cells against T-2 toxin-induced apoptosis in vitro. Toxicol Ind Health 2020; 36:1031-1038. [PMID: 33215568 DOI: 10.1177/0748233720964312] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
To explore the protective mechanism of L-arginine against T-2 toxin-induced apoptosis in mouse Leydig cells, we investigated whether L-arginine can prevent T-2 toxin-induced apoptosis in mouse Leydig cells and explored the underlying mechanisms. Leydig cells were isolated and cultured with control, T-2 toxin (10 nM), L-arginine (0.25, 0.5, and 1.0 mM), and T-2 toxin (10 nM T-2 toxin) + L-arginine (0.25, 0.5, or 1.0 mM) for 24 h. Cells and supernatants were harvested to examine proliferation of the cells, the apoptosis rate, activity of caspase-3 and mitochondria, and the gene expression levels of Bcl-2, Bax, PARP, and caspase-3. Results showed that proliferation and mitochondrial activity of Leydig cells were inhibited by administration of T-2 toxin. Bcl-2 gene expression levels was decreased, while the gene expression levels of Bax and PARP were increased, which could trigger mitochondria-mediated apoptosis, activate downstream caspase-3, and then increased caspase-3 at both activity and gene expression levels. The expression of the Bcl-2 gene was upregulated and the expression of Bax, caspase-3, and PARP gene were downregulated when L-arginine was added to the cultured cells. The results of this study showed that L-arginine could block T-2 toxin-induced apoptosis in mouse Leydig cells by regulating specific intracellular death-related pathways.
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Affiliation(s)
- Yong Fa Zhang
- College of Food and Bioengineering, 74623Henan University of Science and Technology, Luoyang, Henan, China
| | - Jian Ying Yang
- College of Medical Technology and Engineering, 74623Henan University of Science and Technology, Luoyang, Henan, China
| | - Xiang Ping Meng
- College of Medical Technology and Engineering, 74623Henan University of Science and Technology, Luoyang, Henan, China
| | - Na Nie
- College of Medical Technology and Engineering, 74623Henan University of Science and Technology, Luoyang, Henan, China
| | - Mei Cui Tang
- College of Medical Technology and Engineering, 74623Henan University of Science and Technology, Luoyang, Henan, China
| | - Xiao Li Yang
- College of Medical Technology and Engineering, 74623Henan University of Science and Technology, Luoyang, Henan, China
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14
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Qi Y, Wang S, Luo Y, Huang W, Chen L, Zhang Y, Liang X, Tang J, Zhang Y, Zhang L, Chao F, Gao Y, Zhu Y, Tang Y. Exercise-induced Nitric Oxide Contributes to Spatial Memory and Hippocampal Capillaries in Rats. Int J Sports Med 2020; 41:951-961. [PMID: 32643775 DOI: 10.1055/a-1195-2737] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Exercise has been argued to improve cognitive function in both humans and rodents. Angiogenesis significantly contributes to brain health, including cognition. The hippocampus is a crucial brain region for cognitive function. However, studies quantifying the capillary changes in the hippocampus after running exercise are lacking. Moreover, the molecular details underlying the effects of running exercise remain poorly understood. We show that endogenous nitric oxide contributes to the beneficial effects of running exercise on cognition and hippocampal capillaries. Four weeks of running exercise significantly improved spatial memory ability and increased the number of capillaries in the cornu ammonis 1 subfield and dentate gyrus of Sprague-Dawley rats. Running exercise also significantly increased nitric oxide synthase activity and nitric oxide content in the rat hippocampus. After blocking the synthesis of endogenous nitric oxide by lateral ventricular injection of NG-nitro-L-arginine methyl ester, a nonspecific nitric oxide synthase inhibitor, the protective effect of running exercise on spatial memory was eliminated. The protective effect of running exercise on angiogenesis in the cornu ammonis 1 subfield and dentate gyrus of rats was also absent after nitric oxide synthase inhibition. Therefore, during running excise, endogenous nitric oxide may contribute to regulating spatial memory ability and angiogenesis in cornu ammonis 1 subfield and dentate gyrus of the hippocampus.
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Affiliation(s)
- Yingqiang Qi
- Department of Histology and Embryology, Chongqing Medical University, Chongqing, China.,Laboratory of Stem Cells and Tissue Engineering, Chongqing Medical University, Chongqing, China
| | - Sanrong Wang
- Department of Rehabilitation Medicine and Physical Therapy, Chongqing Medical University Affiliated Second Hospital, Chongqing, China
| | - Yanmin Luo
- Department of Physiology, Chongqing Medical University, Chongqing, China
| | - Wei Huang
- Department of Histology and Embryology, Chongqing Medical University, Chongqing, China.,Laboratory of Stem Cells and Tissue Engineering, Chongqing Medical University, Chongqing, China
| | - Linmu Chen
- Department of Histology and Embryology, Shenzhen Children's Hospital, Shenzhen, China
| | - Yi Zhang
- Department of Histology and Embryology, Chongqing Medical University, Chongqing, China.,Laboratory of Stem Cells and Tissue Engineering, Chongqing Medical University, Chongqing, China
| | - Xin Liang
- Department of Histology and Embryology, Chongqing Medical University, Chongqing, China.,Laboratory of Stem Cells and Tissue Engineering, Chongqing Medical University, Chongqing, China
| | - Jing Tang
- Department of Histology and Embryology, Chongqing Medical University, Chongqing, China.,Laboratory of Stem Cells and Tissue Engineering, Chongqing Medical University, Chongqing, China
| | - Yang Zhang
- Department of Histology and Embryology, Chongqing Medical University, Chongqing, China.,Laboratory of Stem Cells and Tissue Engineering, Chongqing Medical University, Chongqing, China
| | - Lei Zhang
- Department of Histology and Embryology, Chongqing Medical University, Chongqing, China.,Laboratory of Stem Cells and Tissue Engineering, Chongqing Medical University, Chongqing, China
| | - Fenglei Chao
- Department of Histology and Embryology, Chongqing Medical University, Chongqing, China.,Laboratory of Stem Cells and Tissue Engineering, Chongqing Medical University, Chongqing, China
| | - Yuan Gao
- Department of Geriatrics, Chongqing Medical University First Affiliated Hospital, Chongqing, China
| | - Yanqing Zhu
- Department of Histology and Embryology, Chongqing Medical University, Chongqing, China.,Laboratory of Stem Cells and Tissue Engineering, Chongqing Medical University, Chongqing, China
| | - Yong Tang
- Department of Histology and Embryology, Chongqing Medical University, Chongqing, China.,Laboratory of Stem Cells and Tissue Engineering, Chongqing Medical University, Chongqing, China
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15
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Wu D, Yang CC, Chen KY, Lin YC, Wu PJ, Hsieh PH, Nakao Y, Ow MYL, Hsieh YC, Hu CJ. Hydrolyzed Chicken Extract (ProBeptigen ®) on Cognitive Function in Healthy Middle-Aged People: A Randomized Double-Blind Trial. Nutrients 2020; 12:nu12051362. [PMID: 32397609 PMCID: PMC7284526 DOI: 10.3390/nu12051362] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2020] [Revised: 05/07/2020] [Accepted: 05/09/2020] [Indexed: 12/16/2022] Open
Abstract
Cognitive decline is an important issue of global public health. Cognitive aging might begin at middle adulthood, the period particularly vulnerable to stress in lifespan. Essence of chicken (EOC) has consistently demonstrated its beneficial effects on various cognitive domains as nutritional supplementation. This study primarily aimed to examine the cognitive enhancement effects of ProBeptigen® (previously named CMI-168), hydrolyzed peptides extracted from EOC, in healthy middle-aged people under mild stress. Ninety healthy subjects were randomly assigned into the ProBeptigen® or placebo group for eight weeks. Neurocognitive assessment, event-related potentials (ERPs), and blood tests were conducted before, during, and after the treatment. The ProBeptigen® group outperformed placebo group on Logical Memory subtests of Wechsler Memory Scale-third edition (WMS-III) and Spatial Working Memory task in the Cambridge Neuropsychological Test Automated Battery (CANTAB). The anti-inflammatory effects of ProBeptigen® in humans were also confirmed, with progressively declining high-sensitivity C-reactive protein (hs-CRP) levels. Regular dietary supplementation of ProBeptigen® is suggested to improve verbal short- and long-term memory as well as spatial working memory, and reduce inflammation in middle-aged healthy individuals with stress. The effects of ProBeptigen® on cognition warrant further investigation. (NCT03612752)
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Affiliation(s)
- Dean Wu
- Department of Neurology, Shuang-Ho Hospital, Taipei Medical University, New Taipei 235, Taiwan; (D.W.); (C.-C.Y.); (K.-Y.C.); (P.-J.W.); (P.-H.H.)
- School of Medicine, College of Medicine, Taipei Medical University, Taipei 110, Taiwan;
| | - Cheng-Chang Yang
- Department of Neurology, Shuang-Ho Hospital, Taipei Medical University, New Taipei 235, Taiwan; (D.W.); (C.-C.Y.); (K.-Y.C.); (P.-J.W.); (P.-H.H.)
- Research Center for Brain and Consciousness, Taipei Medical University, Taipei 235, Taiwan
| | - Kuan-Yu Chen
- Department of Neurology, Shuang-Ho Hospital, Taipei Medical University, New Taipei 235, Taiwan; (D.W.); (C.-C.Y.); (K.-Y.C.); (P.-J.W.); (P.-H.H.)
| | - Ying-Chin Lin
- School of Medicine, College of Medicine, Taipei Medical University, Taipei 110, Taiwan;
- Department of Family Medicine, Wanfang Hospital, Taipei 116, Taiwan
| | - Pei-Jung Wu
- Department of Neurology, Shuang-Ho Hospital, Taipei Medical University, New Taipei 235, Taiwan; (D.W.); (C.-C.Y.); (K.-Y.C.); (P.-J.W.); (P.-H.H.)
| | - Pei-Hsiu Hsieh
- Department of Neurology, Shuang-Ho Hospital, Taipei Medical University, New Taipei 235, Taiwan; (D.W.); (C.-C.Y.); (K.-Y.C.); (P.-J.W.); (P.-H.H.)
| | - Yoshihiro Nakao
- Research and Development, BRAND’S Suntory Asia, Singapore 138623, Singapore; (Y.N.); (M.Y.L.O.)
| | - Mandy Y. L. Ow
- Research and Development, BRAND’S Suntory Asia, Singapore 138623, Singapore; (Y.N.); (M.Y.L.O.)
| | - Yi-Chen Hsieh
- PhD Program for Neural Regenerative Medicine, College of Medical Science and Technology, Taipei Medical University, Taipei 110, Taiwan
- Correspondence: (Y.-C.H.); (C.-J.H.)
| | - Chaur-Jong Hu
- Department of Neurology, Shuang-Ho Hospital, Taipei Medical University, New Taipei 235, Taiwan; (D.W.); (C.-C.Y.); (K.-Y.C.); (P.-J.W.); (P.-H.H.)
- School of Medicine, College of Medicine, Taipei Medical University, Taipei 110, Taiwan;
- PhD Program for Neural Regenerative Medicine, College of Medical Science and Technology, Taipei Medical University, Taipei 110, Taiwan
- Correspondence: (Y.-C.H.); (C.-J.H.)
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16
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Liu W, Li Q, Ye B, Cao H, Shen F, Xu Z, Du W, Guo F, Liu J, Li T, Zhang B, Liu Z. Repeated Nitrous Oxide Exposure Exerts Antidepressant-Like Effects Through Neuronal Nitric Oxide Synthase Activation in the Medial Prefrontal Cortex. Front Psychiatry 2020; 11:837. [PMID: 33088274 PMCID: PMC7495238 DOI: 10.3389/fpsyt.2020.00837] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/04/2020] [Accepted: 07/31/2020] [Indexed: 12/29/2022] Open
Abstract
Clinical studies have demonstrated that exposure to the inhalational general anesthetic nitrous oxide (N2O) produces antidepressant effects in depressed patients. However, the mechanisms underlying the antidepressant effects of N2O remain largely unknown. Neuronal nitric oxide synthase (nNOS)-mediated nitric oxide (NO) synthesis is essential for brain function and underlies the molecular mechanisms of many neuromodulators. We hypothesized that activation of the nNOS/NO pathway in the medial prefrontal cortex (mPFC) might mediate the antidepressant effects of N2O. In this study, we revealed that repeated N2O exposure produced antidepressant-like responses in mice. Our mechanistic exploration showed that repeated N2O exposure increased burst firing activity and that the expression levels of BDNF with nNOS activation were dependent in the mPFC. In particular, the antidepressant-like effects of N2O were also antagonized by local nNOS inhibition in the mPFC. In summary, our results indicated that N2O exposure enhances BDNF expression levels and burst firing rates in an nNOS activation dependent manner, which might underlie the pharmacological mechanism of the antidepressant-like effects of N2O exposure. The present study appears to provide further mechanistic evidence supporting the antidepressant effects of N2O.
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Affiliation(s)
- Wei Liu
- Department of Anesthesiology, Shanghai First Maternity and Infant Hospital, Tongji University School of Medicine, Shanghai, China
| | - Qian Li
- Department of Anesthesiology, Shanghai First Maternity and Infant Hospital, Tongji University School of Medicine, Shanghai, China
| | - Binglu Ye
- Department of Anesthesiology, Shanghai First Maternity and Infant Hospital, Tongji University School of Medicine, Shanghai, China
| | - Hang Cao
- Department of Anesthesiology, Shanghai First Maternity and Infant Hospital, Tongji University School of Medicine, Shanghai, China
| | - Fuyi Shen
- Department of Anesthesiology, Shanghai First Maternity and Infant Hospital, Tongji University School of Medicine, Shanghai, China
| | - Zhendong Xu
- Department of Anesthesiology, Shanghai First Maternity and Infant Hospital, Tongji University School of Medicine, Shanghai, China
| | - Weijia Du
- Department of Anesthesiology, Shanghai First Maternity and Infant Hospital, Tongji University School of Medicine, Shanghai, China
| | - Fei Guo
- Key Laboratory of Receptor Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, China
| | - Jinqi Liu
- The MacDuffie School, Granby, MA, United States
| | - Tianyu Li
- Key Laboratory of Receptor Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, China
| | - Bing Zhang
- Department of Anesthesiology, Shanghai First Maternity and Infant Hospital, Tongji University School of Medicine, Shanghai, China.,Clinical and Translational Research Center, Shanghai First Maternity and Infant Hospital, Tongji University School of Medicine, Shanghai, China
| | - Zhiqiang Liu
- Department of Anesthesiology, Shanghai First Maternity and Infant Hospital, Tongji University School of Medicine, Shanghai, China.,Anesthesia and Brain Function Research Institute, Tongji University School of Medicine, Shanghai, China
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17
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Chong PS, Poon CH, Fung ML, Guan L, Steinbusch HWM, Chan YS, Lim WL, Lim LW. Distribution of neuronal nitric oxide synthase immunoreactivity in adult male Sprague-Dawley rat brain. Acta Histochem 2019; 121:151437. [PMID: 31492421 DOI: 10.1016/j.acthis.2019.08.004] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2019] [Revised: 07/22/2019] [Accepted: 08/20/2019] [Indexed: 12/23/2022]
Abstract
Neuronal NOS (nNOS) accounts for most of the NO production in the nervous system that modulates synaptic transmission and neuroplasticity. Although previous studies have selectively described the localisation of nNOS in specific brain regions, a comprehensive distribution profile of nNOS in the brain is lacking. Here we provided a detailed morphological characterization on the rostro-caudal distribution of neurons and fibres exhibiting positive nNOS-immunoreactivity in adult Sprague-Dawley rat brain. Our results demonstrated that neurons and fibres in the brain regions that exhibited high nNOS immunoreactivity include the olfactory-related areas, intermediate endopiriform nucleus, Islands of Calleja, subfornical organ, ventral lateral geniculate nucleus, parafascicular thalamic nucleus, superior colliculus, lateral terminal nucleus, pedunculopontine tegmental nucleus, periaqueductal gray, dorsal raphe nucleus, supragenual nucleus, nucleus of the trapezoid body, and the cerebellum. Moderate nNOS immunoreactivity was detected in the cerebral cortex, caudate putamen, hippocampus, thalamus, hypothalamus, amygdala, and the spinal cord. Finally, low NOS immunoreactivity were found in the corpus callosum, fornix, globus pallidus, anterior commissure, and the dorsal hippocampal commissure. In conclusion, this study provides a comprehensive view of the morphology and localisation of nNOS immunoreactivity in the brain that would contribute to a better understanding of the role played by nNOS in the brain.
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Affiliation(s)
- Pit Shan Chong
- School of Biomedical Sciences, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong SAR, PR China
| | - Chi Him Poon
- School of Biomedical Sciences, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong SAR, PR China
| | - Man Lung Fung
- School of Biomedical Sciences, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong SAR, PR China
| | - Li Guan
- School of Biomedical Sciences, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong SAR, PR China
| | - Harry W M Steinbusch
- Department of Neuroscience and European Graduate School of Neuroscience, Maastricht University, Maastricht, the Netherlands
| | - Ying-Shing Chan
- School of Biomedical Sciences, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong SAR, PR China
| | - Wei Ling Lim
- School of Biomedical Sciences, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong SAR, PR China; Department of Biological Sciences, Sunway University, Selangor, Malaysia.
| | - Lee Wei Lim
- School of Biomedical Sciences, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong SAR, PR China; Department of Biological Sciences, Sunway University, Selangor, Malaysia.
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18
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Yang JY, Zhang YF, Nie N, Feng WP, Bao JF, Meng XP, Qiao XL. Protective effects of l-arginine against testosterone synthesis decreased by T-2 toxin in mouse Leydig cells. Theriogenology 2019; 134:98-103. [DOI: 10.1016/j.theriogenology.2019.05.023] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2018] [Revised: 04/24/2019] [Accepted: 05/26/2019] [Indexed: 01/27/2023]
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19
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Guix FX, Sartório CL, Ill-Raga G. BACE1 Translation: At the Crossroads Between Alzheimer's Disease Neurodegeneration and Memory Consolidation. J Alzheimers Dis Rep 2019; 3:113-148. [PMID: 31259308 PMCID: PMC6597968 DOI: 10.3233/adr-180089] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Human life unfolds not only in time and space, but also in the recollection and interweaving of memories. Therefore, individual human identity depends fully on a proper access to the autobiographical memory. Such access is hindered under pathological conditions such as Alzheimer’s disease, which affects millions of people worldwide. Unfortunately, no effective cure exists to prevent this disorder, the impact of which will rise alarmingly within the next decades. While Alzheimer’s disease is largely considered to be the outcome of amyloid-β (Aβ) peptide accumulation in the brain, conceiving this complex disorder strictly as the result of Aβ-neurotoxicity is perhaps a too straight-line simplification. Instead, complementary to this view, the tableau of molecular disarrangements in the Alzheimer’s disease brain may be reflecting, at least in part, a loss of function phenotype in memory processing. Here we take BACE1 translation and degradation as a gateway to study molecular mechanisms putatively involved in the transition between memory and neurodegeneration. BACE1 participates in the excision of Aβ-peptide from its precursor holoprotein, but plays a role in synaptic plasticity too. Its translation is governed by eIF2α phosphorylation: a hub integrating cellular responses to stress, but also a critical switch in memory consolidation. Paralleling these dualities, the eIF2α-kinase HRI has been shown to be a nitric oxide-dependent physiological activator of hippocampal BACE1 translation. Finally, beholding BACE1 as a representative protease active in the CNS, we venture a new perspective on the cellular basis of memory, which may incorporate neurodegeneration in itself as a drift in memory consolidating systems.
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Affiliation(s)
- Francesc X Guix
- Department of Molecular Neuropathology, Centro de Biología Molecular Severo Ochoa-CSIC, Madrid, Spain
| | - Carmem L Sartório
- Division of Physiological Sciences, Federal University of Espírito Santo, Vitória, Espírito Santo, Brazil
| | - Gerard Ill-Raga
- Division of Physiological Sciences, Federal University of Espírito Santo, Vitória, Espírito Santo, Brazil
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20
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Hsiao HY, Chung CW, Santos JH, Villaflores OB, Lu TT. Fe in biosynthesis, translocation, and signal transduction of NO: toward bioinorganic engineering of dinitrosyl iron complexes into NO-delivery scaffolds for tissue engineering. Dalton Trans 2019; 48:9431-9453. [DOI: 10.1039/c9dt00777f] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
The ubiquitous physiology of nitric oxide enables the bioinorganic engineering of [Fe(NO)2]-containing and NO-delivery scaffolds for tissue engineering.
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Affiliation(s)
- Hui-Yi Hsiao
- Center for Tissue Engineering
- Chang Gung Memorial Hospital
- Taoyuan
- Taiwan
| | - Chieh-Wei Chung
- Institute of Biomedical Engineering
- National Tsing Hua University
- Hsinchu
- Taiwan
| | | | - Oliver B. Villaflores
- Department of Biochemistry
- Faculty of Pharmacy
- University of Santo Tomas
- Manila
- Philippines
| | - Tsai-Te Lu
- Institute of Biomedical Engineering
- National Tsing Hua University
- Hsinchu
- Taiwan
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21
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Tsai SF, Chang CY, Yong SM, Lim AL, Nakao Y, Chen SJ, Kuo YM. A Hydrolyzed Chicken Extract CMI-168 Enhances Learning and Memory in Middle-Aged Mice. Nutrients 2018; 11:E27. [PMID: 30583503 PMCID: PMC6356702 DOI: 10.3390/nu11010027] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2018] [Revised: 12/17/2018] [Accepted: 12/19/2018] [Indexed: 12/17/2022] Open
Abstract
There has been increasing evidence that consumption of dietary supplements or specific nutrients can influence cognitive processes and emotions. A proprietary chicken meat extraction, Chicken Meat Ingredient-168 (CMI-168), has previously been shown to enhance cognitive function in humans. However, the mechanism underlying the CMI-168-induced benefits remains unclear. In this study, we investigated the effects of CMI-168 on hippocampal neuroplasticity and memory function in middle-aged (9⁻12 months old) mice. The mice in the test group (termed the "CMI-168 group") were fed dietary pellets produced by mixing CMI-168 and normal laboratory mouse chow to provide a daily CMI-168 dose of 150 mg/kg of body weight for 6 weeks. The control mice (termed the "Chow group") were fed normal laboratory mouse chow pellets. CMI-168 supplementation did not affect the body weight gain, food intake, or exploratory behavior of the mice. In the novel object recognition test, the CMI-168 group showed better hippocampus-related non-spatial memory compared to the control Chow group. However, spatial memory examined by the Morris Water Maze test was similar between the two groups. There was also no significant difference in the induction and maintenance of long-term potentiation and dendritic complexity of the hippocampal cornu ammonis region 1 (CA1) neurons, as well as the levels of neuroplasticity-related proteins in the hippocampi of the CMI-168 and Chow groups. Interestingly, we observed that CMI-168 appeared to protect the mice against stress-induced weight loss. In conclusion, dietary supplementation of CMI-168 was found to improve learning and memory in middle-aged mice, independent of structural or functional changes in the hippocampus. The resilience to stress afforded by CMI-168 warrants further investigation.
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Affiliation(s)
- Sheng-Feng Tsai
- Institute of Basic Medical Sciences, College of Medicine, National Cheng Kung University, Tainan 70101, Taiwan.
- College of Photonics, National Chiao Tung University, Hsinchu 30010, Taiwan.
| | - Chia-Yuan Chang
- Advanced Optoelectronic Technology Center, National Cheng Kung University, Tainan 70101, Taiwan.
| | - Shan-May Yong
- Scientific Research and Applications, BRAND'S Suntory, Singapore 048423, Singapore.
| | - Ai-Lin Lim
- Scientific Research and Applications, BRAND'S Suntory, Singapore 048423, Singapore.
| | - Yoshihiro Nakao
- Scientific Research and Applications, BRAND'S Suntory, Singapore 048423, Singapore.
| | - Shean-Jen Chen
- College of Photonics, National Chiao Tung University, Hsinchu 30010, Taiwan.
| | - Yu-Min Kuo
- Institute of Basic Medical Sciences, College of Medicine, National Cheng Kung University, Tainan 70101, Taiwan.
- Department of Cell Biology and Anatomy, College of Medicine, National Cheng Kung University, Tainan 70101, Taiwan.
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22
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Martínez-Lazcano JC, López-Quiroz A, Alcantar-Almaraz R, Montes S, Sánchez-Mendoza A, Alcaraz-Zubeldia M, Tristán-López LA, Sánchez-Hernández BE, Morales-Martínez A, Ríos C, Pérez-Severiano F. A Hypothesis of the Interaction of the Nitrergic and Serotonergic Systems in Aggressive Behavior Induced by Exposure to Lead. Front Behav Neurosci 2018; 12:202. [PMID: 30233338 PMCID: PMC6129586 DOI: 10.3389/fnbeh.2018.00202] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2018] [Accepted: 08/16/2018] [Indexed: 11/18/2022] Open
Abstract
The effects caused by exposure to lead (Pb) are still considered as a relevant health risk despite public policies aimed to restricting the use of this element. The toxicity limit in the blood (10 μg/dL, established by the Center for Disease Control and Prevention) has been insufficient to prevent adverse effects and even lower values have been related to neurobehavioral dysfunctions in children. Currently, there is not a safe limit of exposure to Pb. A large body of evidence points to environmental pollutant exposure as the cause of predisposition to violent behavior, among others. Considering the evidence by our group and others, we propose that Pb exposure induces alterations in the brain vasculature, specifically in nitric oxide synthases (NOS), affecting in turn the serotonergic system and leading to heightened aggressive behavior in the exposed individuals. This review article describes the consequences of Pb exposure on the nitrergic and serotonergic systems as well as its relationship with aggressive behavior. In addition, it summarizes the available therapy to prevent damage in gestation and among infants.
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Affiliation(s)
- Juan Carlos Martínez-Lazcano
- Departamento de Neuroquímica, Instituto Nacional de Neurología y Neurocirugía (INNN), Mexico City, Mexico.,Departamento de Neurofisiología, Instituto Nacional de Neurología y Neurocirugía (INNN), Mexico City, Mexico
| | - Alfredo López-Quiroz
- Departamento de Neuroquímica, Instituto Nacional de Neurología y Neurocirugía (INNN), Mexico City, Mexico
| | - Rocío Alcantar-Almaraz
- Departamento de Neuroquímica, Instituto Nacional de Neurología y Neurocirugía (INNN), Mexico City, Mexico
| | - Sergio Montes
- Departamento de Neuroquímica, Instituto Nacional de Neurología y Neurocirugía (INNN), Mexico City, Mexico
| | - Alicia Sánchez-Mendoza
- Departamento de Farmacología, Instituto Nacional de Cardiología Ignacio Chávez, Mexico City, Mexico
| | - Mireya Alcaraz-Zubeldia
- Departamento de Neuroquímica, Instituto Nacional de Neurología y Neurocirugía (INNN), Mexico City, Mexico
| | - Luis Antonio Tristán-López
- Departamento de Neuroquímica, Instituto Nacional de Neurología y Neurocirugía (INNN), Mexico City, Mexico
| | | | - Adriana Morales-Martínez
- Departamento de Neuroquímica, Instituto Nacional de Neurología y Neurocirugía (INNN), Mexico City, Mexico
| | - Camilo Ríos
- Departamento de Neuroquímica, Instituto Nacional de Neurología y Neurocirugía (INNN), Mexico City, Mexico
| | - Francisca Pérez-Severiano
- Departamento de Neuroquímica, Instituto Nacional de Neurología y Neurocirugía (INNN), Mexico City, Mexico
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23
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Yang JY, Zhang YF, Li YX, Meng XP, Bao JF. l-arginine protects against oxidative damage induced by T-2 toxin in mouse Leydig cells. J Biochem Mol Toxicol 2018; 32:e22209. [DOI: 10.1002/jbt.22209] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2018] [Revised: 07/04/2018] [Accepted: 07/06/2018] [Indexed: 01/23/2023]
Affiliation(s)
- Jian Ying Yang
- Department of Laboratory Medicine; College of Medical Technology and Engineering, Henan University of Science and Technology; Luoyang China
| | - Yong Fa Zhang
- Department of Laboratory Medicine; College of Medical Technology and Engineering, Henan University of Science and Technology; Luoyang China
- Department of Bioengineering; College of Food and Bioengineering, Henan University of Science and Technology; Luoyang China
| | - Yuan Xiao Li
- Department of Animal Nutrition and Feed Science; College of Animal Science and Technology, Henan University of Science and Technology; Luoyang China
| | - Xiang Ping Meng
- Department of Laboratory Medicine; College of Medical Technology and Engineering, Henan University of Science and Technology; Luoyang China
| | - Jian Feng Bao
- Department of Laboratory Medicine; College of Medical Technology and Engineering, Henan University of Science and Technology; Luoyang China
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24
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Amelioration by nitric oxide (NO) mimetics on neurobehavioral and biochemical changes in experimental model of Alzheimer’s disease in rats. Neurotoxicology 2018. [DOI: 10.1016/j.neuro.2018.03.001] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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25
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Reis MEMD, Araújo LTFD, de Andrade WMG, Resende NDS, Lima RRMD, Nascimento ESD, Costa MSMDO, Cavalcante JC. Distribution of nitric oxide synthase in the rock cavy (Kerodon rupestris) brain I: The diencephalon. Brain Res 2018; 1685:60-78. [DOI: 10.1016/j.brainres.2018.01.020] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2017] [Revised: 01/15/2018] [Accepted: 01/17/2018] [Indexed: 12/27/2022]
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26
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Namba MD, Tomek SE, Olive MF, Beckmann JS, Gipson CD. The Winding Road to Relapse: Forging a New Understanding of Cue-Induced Reinstatement Models and Their Associated Neural Mechanisms. Front Behav Neurosci 2018; 12:17. [PMID: 29479311 PMCID: PMC5811475 DOI: 10.3389/fnbeh.2018.00017] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2017] [Accepted: 01/22/2018] [Indexed: 12/13/2022] Open
Abstract
In drug addiction, cues previously associated with drug use can produce craving and frequently trigger the resumption of drug taking in individuals vulnerable to relapse. Environmental stimuli associated with drugs or natural reinforcers can become reliably conditioned to increase behavior that was previously reinforced. In preclinical models of addiction, these cues enhance both drug self-administration and reinstatement of drug seeking. In this review, we will dissociate the roles of conditioned stimuli as reinforcers from their modulatory or discriminative functions in producing drug-seeking behavior. As well, we will examine possible differences in neurobiological encoding underlying these functional differences. Specifically, we will discuss how models of drug addiction and relapse should more systematically evaluate these different types of stimuli to better understand the neurobiology underlying craving and relapse. In this way, behavioral and pharmacotherapeutic interventions may be better tailored to promote drug use cessation outcomes and long-term abstinence.
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Affiliation(s)
- Mark D. Namba
- Department of Psychology, Arizona State University, Tempe, AZ, United States
| | - Seven E. Tomek
- Department of Psychology, Arizona State University, Tempe, AZ, United States
| | - M. Foster Olive
- Department of Psychology, Arizona State University, Tempe, AZ, United States
| | - Joshua S. Beckmann
- Department of Psychology, University of Kentucky, Lexington, KY, United States
| | - Cassandra D. Gipson
- Department of Psychology, Arizona State University, Tempe, AZ, United States
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27
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Yu ZM, Zhao Y, Zhan JQ, Luo T, Xiong JW, Yu B, Wei B, Yang YJ. Treatment Responses of Cognitive Function and Plasma Asymmetric Dimethylarginine to Atypical Antipsychotic in Patients With Schizophrenia. Front Psychiatry 2018; 9:733. [PMID: 30687138 PMCID: PMC6335386 DOI: 10.3389/fpsyt.2018.00733] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/02/2018] [Accepted: 12/13/2018] [Indexed: 01/25/2023] Open
Abstract
Cognitive deficits represent a core feature of schizophrenia. Previous studies have demonstrated that plasma asymmetric dimethylarginine (ADMA) was increased in patients with schizophrenia and correlated with cognitive impairments. Atypical antipsychotics can produce cognitive benefits in schizophrenia patients. In this study, we conducted a prospective observation trial to explore whether plasma ADMA may serve as an indicator for evaluating cognitive improvements induced by atypical antipsychotics in patients with schizophrenia. A total of 41 schizophrenia patients with acute exacerbation were enrolled and 29 patients completed this study. These recruited patients were drug-naive or had no exposure to antipsychotics for at least 3 months. Thirty healthy individuals were recruited as a control group. Positive and Negative Syndrome Scale (PANSS) and a neuropsychological battery were used to evaluate schizophrenic symptoms and cognitive function, respectively. Plasma ADMA was measured by high-performance liquid chromatography (HPLC). We found that schizophrenia patients with acute exacerbation had significantly poorer cognitive performances and higher plasma ADMA levels than control individuals (p < 0.05). After 2 months of atypical antipsychotic treatment, patients showed significant improvements in processing speed, working memory, attention, and executive function (all p < 0.01). Plasma ADMA levels in patients after treatment were significantly decreased compared to baseline (2.42 ± 0.84 vs. 1.55 ± 0.34 μmol/L; t = 6.491, p < 0.001). Correlation analysis reveals that there is a significant correlation of the decrease in ADMA with improvements in working memory (r = -0.413, p = 0.026) and attention (r = -0.417, p = 0.025). Collectively, our results suggest that atypical antipsychotics improve cognitive function in schizophrenia patients with acute exacerbation, in parallel with decreased plasma ADMA levels. Plasma ADMA levels may be an indicator of cognitive recovery in schizophrenia.
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Affiliation(s)
- Zhi-Min Yu
- Department of Psychiatry, Jiangxi Mental Hospital/Affiliated Mental Hospital of Nanchang University, Nanchang, China
| | - Ying Zhao
- Department of Pharmacy, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Jin-Qiong Zhan
- Biological Psychiatry Laboratory, Jiangxi Mental Hospital/Affiliated Mental Hospital of Nanchang University, Nanchang, China
| | - Tao Luo
- Department of Psychiatry, Jiangxi Mental Hospital/Affiliated Mental Hospital of Nanchang University, Nanchang, China
| | - Jian-Wen Xiong
- Department of Psychiatry, Jiangxi Mental Hospital/Affiliated Mental Hospital of Nanchang University, Nanchang, China
| | - Bin Yu
- Department of Psychiatry, Jiangxi Mental Hospital/Affiliated Mental Hospital of Nanchang University, Nanchang, China
| | - Bo Wei
- Department of Psychiatry, Jiangxi Mental Hospital/Affiliated Mental Hospital of Nanchang University, Nanchang, China
| | - Yuan-Jian Yang
- Department of Psychiatry, Jiangxi Mental Hospital/Affiliated Mental Hospital of Nanchang University, Nanchang, China.,Biological Psychiatry Laboratory, Jiangxi Mental Hospital/Affiliated Mental Hospital of Nanchang University, Nanchang, China
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28
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Physiological and pathological processes of synaptic plasticity and memory in drug discovery: Do not forget the dose-response curve. Eur J Pharmacol 2017; 817:59-70. [DOI: 10.1016/j.ejphar.2017.05.058] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2017] [Revised: 03/20/2017] [Accepted: 05/30/2017] [Indexed: 01/24/2023]
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29
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Romano DR, Pharris MC, Patel NM, Kinzer-Ursem TL. Competitive tuning: Competition's role in setting the frequency-dependence of Ca2+-dependent proteins. PLoS Comput Biol 2017; 13:e1005820. [PMID: 29107982 PMCID: PMC5690689 DOI: 10.1371/journal.pcbi.1005820] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2017] [Revised: 11/16/2017] [Accepted: 10/13/2017] [Indexed: 01/20/2023] Open
Abstract
A number of neurological disorders arise from perturbations in biochemical signaling and protein complex formation within neurons. Normally, proteins form networks that when activated produce persistent changes in a synapse’s molecular composition. In hippocampal neurons, calcium ion (Ca2+) flux through N-methyl-D-aspartate (NMDA) receptors activates Ca2+/calmodulin signal transduction networks that either increase or decrease the strength of the neuronal synapse, phenomena known as long-term potentiation (LTP) or long-term depression (LTD), respectively. The calcium-sensor calmodulin (CaM) acts as a common activator of the networks responsible for both LTP and LTD. This is possible, in part, because CaM binding proteins are “tuned” to different Ca2+ flux signals by their unique binding and activation dynamics. Computational modeling is used to describe the binding and activation dynamics of Ca2+/CaM signal transduction and can be used to guide focused experimental studies. Although CaM binds over 100 proteins, practical limitations cause many models to include only one or two CaM-activated proteins. In this work, we view Ca2+/CaM as a limiting resource in the signal transduction pathway owing to its low abundance relative to its binding partners. With this view, we investigate the effect of competitive binding on the dynamics of CaM binding partner activation. Using an explicit model of Ca2+, CaM, and seven highly-expressed hippocampal CaM binding proteins, we find that competition for CaM binding serves as a tuning mechanism: the presence of competitors shifts and sharpens the Ca2+ frequency-dependence of CaM binding proteins. Notably, we find that simulated competition may be sufficient to recreate the in vivo frequency dependence of the CaM-dependent phosphatase calcineurin. Additionally, competition alone (without feedback mechanisms or spatial parameters) could replicate counter-intuitive experimental observations of decreased activation of Ca2+/CaM-dependent protein kinase II in knockout models of neurogranin. We conclude that competitive tuning could be an important dynamic process underlying synaptic plasticity. Learning and memory formation are likely associated with dynamic fluctuations in the connective strength of neuronal synapses. These fluctuations, called synaptic plasticity, are regulated by calcium ion (Ca2+) influx through ion channels localized to the post-synaptic membrane. Within the post-synapse, the dominant Ca2+ sensor protein, calmodulin (CaM), may activate a variety of downstream binding partners, each contributing to synaptic plasticity outcomes. The conditions at which certain binding partners most strongly activate are increasingly studied using computational models. Nearly all computational studies describe these binding partners in combinations of only one or two CaM binding proteins. In contrast, we combine seven well-studied CaM binding partners into a single model wherein they simultaneously compete for access to CaM. Our dynamic model suggests that competition narrows the window of conditions for optimal activation of some binding partners, mimicking the Ca2+-frequency dependence of some proteins in vivo. Further characterization of CaM-dependent signaling dynamics in neuronal synapses may benefit our understanding of learning and memory formation. Furthermore, we propose that competitive binding may be another framework, alongside feedback and feed-forward loops, signaling motifs, and spatial localization, that can be applied to other signal transduction networks, particularly second messenger cascades, to explain the dynamical behavior of protein activation.
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Affiliation(s)
- Daniel R. Romano
- Weldon School of Biomedical Engineering, Purdue University, West Lafayette, IN, United States of America
| | - Matthew C. Pharris
- Weldon School of Biomedical Engineering, Purdue University, West Lafayette, IN, United States of America
| | - Neal M. Patel
- Weldon School of Biomedical Engineering, Purdue University, West Lafayette, IN, United States of America
| | - Tamara L. Kinzer-Ursem
- Weldon School of Biomedical Engineering, Purdue University, West Lafayette, IN, United States of America
- * E-mail:
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30
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Effect of Hypoxic Injury in Mood Disorder. Neural Plast 2017; 2017:6986983. [PMID: 28717522 PMCID: PMC5498932 DOI: 10.1155/2017/6986983] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2017] [Revised: 05/26/2017] [Accepted: 06/06/2017] [Indexed: 12/12/2022] Open
Abstract
Hypoxemia is a common complication of the diseases associated with the central nervous system, and neurons are highly sensitive to the availability of oxygen. Neuroplasticity is an important property of the neural system controlling breathing, memory, and cognitive ability. However, the underlying mechanism has not yet been clearly elucidated. In recent years, several pieces of evidence have highlighted the effect of hypoxic injury on neuronal plasticity in the pathogenesis and treatment of mood disorder. Therefore, the present study reviewed the relevant articles regarding hypoxic injury and neuronal plasticity and discussed the pathological changes and physiological functions of neurons in hypoxemia in order to provide a translational perspective to the relevance of hypoxic injury and mood disorder.
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Hosseini M, Anaeigoudari A, Beheshti F, Soukhtanloo M, Nosratabadi R. Protective effect against brain tissues oxidative damage as a possible mechanism for beneficial effects of L-arginine on lipopolysaccharide induced memory impairment in rats. Drug Chem Toxicol 2017. [PMID: 28640652 DOI: 10.1080/01480545.2017.1336173] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
L-Arginine (LA) and nitric oxide (NO) have been suggested to have some effects on learning, memory, brain tissues oxidative damage, and neuroinflammation. In this study, protective effect against brain tissues oxidative damage as a possible mechanism for beneficial effects of LA on lipopolysaccharide (LPS) induced memory impairment was investigated. The rats were grouped into and treated by (1) control (saline), (2) LPS (1 mg/kg, IP), (3) LA (200 mg/kg) - LPS (4) LA. In passive avoidance (PA) test, LPS administration shortened the latency to enter the dark compartment in LPS group compared to control (p < .001) which was accompanied with a high level of malondialdehyde (MDA) and NO metabolite concentrations in the hippocampal tissues (p < .001and p < .05, respectively). Pretreatment with LA prolonged the latency in LA-LPS group compared with LPS group (p < .01-.001) and re-stored MDA and NO metabolites in the hippocampal tissues (p < .05). LPS also reduced superoxide dismutase (SOD) and catalase (CAT) activities and thiol content in the hippocampal tissues in LPS group compared to control (p < .05 and p < .001, respectively) which improved by LA when it was administered before LPS in LA-LPS group (p < .05 and p < .001). Finally, the serum TNFα level of LPS group was higher than the control (p < .01) while, in LA-LPS group it was lower than LPS group (p < .01). It seems that the beneficial effects of LA on memory impairment of LPS-treated rats may be due to its protective effects against brain tissues oxidative damage.
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Affiliation(s)
- Mahmoud Hosseini
- a Division of Neurocognitive Sciences , Psychiatry and Behavioral Sciences Research Center, Mashhad University of Medical Sciences , Mashhad , Iran
| | - Akbar Anaeigoudari
- b Department of Physiology, School of Medicine , Jiroft University of medical Sciences , Jiroft , Iran
| | - Farimah Beheshti
- c Neurogenic Inflammation Research Center and Department of Physiology, School of Medicine , Mashhad University of Medical Sciences , Mashhad , Iran
| | - Mohammad Soukhtanloo
- d Department of Biochemistry, School of Medicine , Mashhad University of Medical Sciences , Mashhad , Iran
| | - Reza Nosratabadi
- e Immunology of Infectious Diseases Research Center , Rafsanjan University of Medical Sciences , Rafsanjan , Iran
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Carey LM, Lee WH, Gutierrez T, Kulkarni PM, Thakur GA, Lai YY, Hohmann AG. Small molecule inhibitors of PSD95-nNOS protein-protein interactions suppress formalin-evoked Fos protein expression and nociceptive behavior in rats. Neuroscience 2017; 349:303-317. [PMID: 28285942 DOI: 10.1016/j.neuroscience.2017.02.055] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2016] [Revised: 02/08/2017] [Accepted: 02/27/2017] [Indexed: 11/29/2022]
Abstract
Excessive activation of NMDA receptor (NMDAR) signaling within the spinal dorsal horn contributes to central sensitization and the induction and maintenance of pathological pain states. However, direct antagonism of NMDARs produces undesirable side effects which limit their clinical use. NMDAR activation produces central sensitization, in part, by initiating a signaling cascade that activates the enzyme neuronal nitric oxide synthase (nNOS) and generates the signaling molecule nitric oxide. NMDAR-mediated activation of nNOS requires a scaffolding protein, postsynaptic density protein 95kDa (PSD95), which tethers nNOS to NMDARs. Thus, disrupting the protein-protein interaction between PSD95 and nNOS may inhibit pro-nociceptive signaling mechanisms downstream of NMDARs and suppress central sensitization while sparing unwanted side effects associated with NMDAR antagonists. We examined the impact of small molecule PSD95-nNOS protein-protein interaction inhibitors (ZL006, IC87201) on both nociceptive behavior and formalin-evoked Fos protein expression within the lumbar spinal cord of rats. Comparisons were made with ZL007, an inactive analog of ZL006, and the NMDAR antagonist MK-801. IC87201 and ZL006, but not ZL007, suppressed phase 2 of formalin-evoked pain behavior and decreased the number of formalin-induced Fos-like immunoreactive cells in spinal dorsal horn regions associated with nociceptive processing. MK-801 suppressed Fos protein expression in both dorsal and ventral horns. MK-801 produced motor ataxia in the rotarod test whereas IC87201 and ZL006 failed to do so. ZL006 but not ZL007 suppressed paclitaxel-induced mechanical and cold allodynia in a model of chemotherapy-induced neuropathic pain. Co-immunoprecipitation experiments revealed the presence of the PSD95-nNOS complex in lumbar spinal cord of paclitaxel-treated rats, although ZL006 did not reliably disrupt the complex in all subjects. The present findings validate use of putative small molecule PSD95-nNOS protein-protein interaction inhibitors as novel analgesics and demonstrate, for the first time, that these inhibitors suppress inflammation-evoked neuronal activation at the level of the spinal dorsal horn.
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Affiliation(s)
- Lawrence M Carey
- Department of Psychological and Brain Sciences, Indiana University, Bloomington, IN, United States; Program in Neuroscience, Indiana University, Bloomington, IN, United States
| | - Wan-Hung Lee
- Interdisciplinary Biochemistry Program, Molecular and Cellular Biochemistry Department, Indiana University, Bloomington, IN, United States
| | - Tannia Gutierrez
- Department of Psychological and Brain Sciences, Indiana University, Bloomington, IN, United States
| | - Pushkar M Kulkarni
- Center for Drug Discovery, and Department of Pharmaceutical Sciences, Northeastern University, Boston, MA, United States
| | - Ganesh A Thakur
- Center for Drug Discovery, and Department of Pharmaceutical Sciences, Northeastern University, Boston, MA, United States
| | - Yvonne Y Lai
- Department of Psychological and Brain Sciences, Indiana University, Bloomington, IN, United States; Anagin, Inc., Indianapolis, IN, United States
| | - Andrea G Hohmann
- Department of Psychological and Brain Sciences, Indiana University, Bloomington, IN, United States; Program in Neuroscience, Indiana University, Bloomington, IN, United States; Interdisciplinary Biochemistry Program, Molecular and Cellular Biochemistry Department, Indiana University, Bloomington, IN, United States; Gill Center for Biomolecular Science, Indiana University, Bloomington, IN, United States.
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33
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Simor A, Györffy BA, Gulyássy P, Völgyi K, Tóth V, Todorov MI, Kis V, Borhegyi Z, Szabó Z, Janáky T, Drahos L, Juhász G, Kékesi KA. The short- and long-term proteomic effects of sleep deprivation on the cortical and thalamic synapses. Mol Cell Neurosci 2017; 79:64-80. [PMID: 28087334 DOI: 10.1016/j.mcn.2017.01.002] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2016] [Revised: 12/07/2016] [Accepted: 01/06/2017] [Indexed: 12/25/2022] Open
Abstract
Acute total sleep deprivation (SD) impairs memory consolidation, attention, working memory and perception. Structural, electrophysiological and molecular experimental approaches provided evidences for the involvement of sleep in synaptic functions. Despite the wide scientific interest on the effects of sleep on the synapse, there is a lack of systematic investigation of sleep-related changes in the synaptic proteome. We isolated parietal cortical and thalamic synaptosomes of rats after 8h of total SD by gentle handling and 16h after the end of deprivation to investigate the short- and longer-term effects of SD on the synaptic proteome, respectively. The SD efficiency was verified by electrophysiology. Protein abundance alterations of the synaptosomes were analyzed by fluorescent two-dimensional differential gel electrophoresis and by tandem mass spectrometry. As several altered proteins were found to be involved in synaptic strength regulation, our data can support the synaptic homeostasis hypothesis function of sleep and highlight the long-term influence of SD after the recovery sleep period, mostly on cortical synapses. Furthermore, the large-scale and brain area-specific protein network change in the synapses may support both ideas of sleep-related synaptogenesis and molecular maintenance and reorganization in normal rat brain.
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Affiliation(s)
- Attila Simor
- Laboratory of Proteomics, Institute of Biology, Eötvös Loránd University, Budapest H-1117, Hungary
| | - Balázs András Györffy
- Laboratory of Proteomics, Institute of Biology, Eötvös Loránd University, Budapest H-1117, Hungary; MTA-ELTE NAP B Neuroimmunology Research Group, Department of Biochemistry, Institute of Biology, Eötvös Loránd University, Budapest H-1117, Hungary
| | - Péter Gulyássy
- Laboratory of Proteomics, Institute of Biology, Eötvös Loránd University, Budapest H-1117, Hungary; MTA-TTK NAP B MS Neuroproteomics Research Group, Hungarian Academy of Sciences, Budapest H-1117, Hungary
| | - Katalin Völgyi
- Laboratory of Proteomics, Institute of Biology, Eötvös Loránd University, Budapest H-1117, Hungary; MTA-ELTE NAP B Laboratory of Molecular and Systems Neurobiology, Institute of Biology, Hungarian Academy of Sciences and Eötvös Loránd University, Budapest H-1117, Hungary
| | - Vilmos Tóth
- Laboratory of Proteomics, Institute of Biology, Eötvös Loránd University, Budapest H-1117, Hungary; MTA-TTK NAP B MS Neuroproteomics Research Group, Hungarian Academy of Sciences, Budapest H-1117, Hungary
| | - Mihail Ivilinov Todorov
- Laboratory of Proteomics, Institute of Biology, Eötvös Loránd University, Budapest H-1117, Hungary
| | - Viktor Kis
- Department of Anatomy, Cell and Developmental Biology, Institute of Biology, Eötvös Loránd University, Budapest H-1117, Hungary
| | - Zsolt Borhegyi
- MTA-ELTE-NAP B Opto-Neuropharmacology Group, Hungarian Academy of Sciences and Eötvös Loránd University, Budapest H-1117, Hungary
| | - Zoltán Szabó
- Institute of Medical Chemistry, University of Szeged, Szeged H-6720, Hungary
| | - Tamás Janáky
- Institute of Medical Chemistry, University of Szeged, Szeged H-6720, Hungary
| | - László Drahos
- MTA-TTK NAP B MS Neuroproteomics Research Group, Hungarian Academy of Sciences, Budapest H-1117, Hungary
| | - Gábor Juhász
- Laboratory of Proteomics, Institute of Biology, Eötvös Loránd University, Budapest H-1117, Hungary; MTA-TTK NAP B MS Neuroproteomics Research Group, Hungarian Academy of Sciences, Budapest H-1117, Hungary
| | - Katalin Adrienna Kékesi
- Laboratory of Proteomics, Institute of Biology, Eötvös Loránd University, Budapest H-1117, Hungary; Department of Physiology and Neurobiology, Eötvös Loránd University, Budapest H-1117, Hungary.
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Chen W, Yan M, Wang Y, Wang X, Yuan J, Li M. Effects of 7-nitroindazole, a selective neural nitric oxide synthase inhibitor, on context-shock associative learning in a two-process contextual fear conditioning paradigm. Neurobiol Learn Mem 2016; 134 Pt B:287-93. [DOI: 10.1016/j.nlm.2016.07.033] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2016] [Revised: 05/28/2016] [Accepted: 07/29/2016] [Indexed: 11/16/2022]
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Wang XX, Zha YY, Yang B, Chen L, Wang M. Suppression of synaptic plasticity by fullerenol in rat hippocampus in vitro. Int J Nanomedicine 2016; 11:4947-4955. [PMID: 27729790 PMCID: PMC5047730 DOI: 10.2147/ijn.s104856] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
Fullerenol, a water-soluble fullerene derivative, has attracted much attention due to its bioactive properties, including the antioxidative properties and free radical scavenging ability. Due to its superior nature, fullerenol represents a promising diagnostic, therapeutic, and protective agent. Therefore, elucidation of the possible side effects of fullerenol is important in determining its potential role. In the present study, we investigated the acute effects of 5 μM fullerenol on synaptic plasticity in hippocampal brain slices of rats. Incubation with fullerenol for 20 minutes significantly decreased the peak of paired-pulse facilitation and long-term potentiation, indicating that fullerenol suppresses the short- and long-term synaptic plasticity of region I of hippocampus. We found that fullerenol depressed the activity and the expression of nitric oxide (NO) synthase in hippocampus. In view of the important role of NO in synaptic plasticity, the inhibition of fullerenol on NO synthase may contribute to the suppression of synaptic plasticity. These findings may facilitate the evaluation of the side effects of fullerenol.
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Affiliation(s)
- Xin-Xing Wang
- CAS Key Laboratory of Brain Function and Diseases; Auditory Research Laboratory, School of Life Sciences, University of Science and Technology of China, Hefei, Anhui, People's Republic of China
| | - Ying-Ying Zha
- Cell Electrophysiology Laboratory, Wannan Medical College, Wuhu, Anhui, People's Republic of China
| | - Bo Yang
- CAS Key Laboratory of Brain Function and Diseases
| | - Lin Chen
- CAS Key Laboratory of Brain Function and Diseases; Auditory Research Laboratory, School of Life Sciences, University of Science and Technology of China, Hefei, Anhui, People's Republic of China
| | - Ming Wang
- CAS Key Laboratory of Brain Function and Diseases; Auditory Research Laboratory, School of Life Sciences, University of Science and Technology of China, Hefei, Anhui, People's Republic of China
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Desaiah D, Pande M, Vig PJS, Cameron JA, Ali SF. In Vitro and In Vivo Inhibition of Rat Brain Nitric Oxide Synthase Activity by Phencyclidine. Int J Toxicol 2016. [DOI: 10.1080/109158199225396] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
Phencyclidine (PCP) is a widely abused psychoactive drug that perturbs many neurotransmitter systems studied to date. Nitric oxide (NO) has been established as a neuronal messenger and its rapid diffusibility across cell membranes makes NO an extensive and versatile messenger in brain development and functioning. The present study was initiated to investigate the effect of PCP on rat brain nitric oxide synthase (NOS) activity both in vitro and in vivo. Brain cytosolic fractions from normal rats were used for in vitro and in vivo studies. The rats were treated with a single dose of PCP (10 mg/kg, intraperitoneally); the brains were removed at 0, 1, 2, 6, and 12 hours after PCP treatment and the cytosolic fractions were prepared by homogenization and centrifugation. NOS activity was assessed by quantifying the release of [3H]-citrulline from [3H]-arginine. PCP significantly inhibited rat brain NOS in vitro in a concentration (0.05–2 mM)-dependent manner. The kinetic evaluation of arginine, NADPH, and Ca2+ activation of NOS revealed that PCP (0.5 mM) inhibited NOS activity competitively with respect to arginine and NADPH and noncompetitively inhibited with respect to Ca2+. PCP also caused a time-dependent reduction of brain NOS activity in vivo as early as 1 hour after treatment. Even after 12 hours of PCP treatment, NOS activity did not reverse to its normal level as compared to the control group, suggesting sequestration and persistence of the drug in the central nervous system. These results suggest that inhibition of brain NOS by PCP might be one of the mechanisms through which PCP causes neurotoxicity.
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Affiliation(s)
- D. Desaiah
- Department of Neurology, University of Mississippi Medical Center, Jackson, Mississippi, USA
| | - M. Pande
- Department of Neurology, University of Mississippi Medical Center, Jackson, Mississippi, USA
| | - P. J. S. Vig
- Department of Neurology, University of Mississippi Medical Center, Jackson, Mississippi, USA
| | - J. A. Cameron
- Department of Biology, Jackson State University, Jackson, Mississippi, USA
| | - S. F. Ali
- Neurochemistry Laboratory, Division of Neurotoxicology, National Center for Toxicological Research/Food and Drug Administration, Jefferson, Arkansas, USA
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Kitamura K, Kawaguchi M, Ieda N, Miyata N, Nakagawa H. Visible Light-Controlled Nitric Oxide Release from Hindered Nitrobenzene Derivatives for Specific Modulation of Mitochondrial Dynamics. ACS Chem Biol 2016; 11:1271-8. [PMID: 26878937 DOI: 10.1021/acschembio.5b00962] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Nitric oxide (NO) is a physiological signaling molecule, whose biological production is precisely regulated at the subcellular level. Here, we describe the design, synthesis, and evaluation of novel mitochondria-targeted NO releasers, Rol-DNB-mor and Rol-DNB-pyr, that are photocontrollable not only in the UV wavelength range but also in the biologically favorable visible wavelength range (530-590 nm). These caged NO compounds consist of a hindered nitrobenzene as the NO-releasing moiety and a rhodamine chromophore. Their NO-release properties were characterized by an electron spin resonance (ESR) spin trapping method and fluorometric analysis using NO probes, and their mitochondrial localization in live cells was confirmed by costaining. Furthermore, we demonstrated visible light control of mitochondrial fragmentation via activation of dynamin-related protein 1 (Drp1) by means of precisely controlled NO delivery into mitochondria of cultured HEK293 cells, utilizing Rol-DNB-pyr.
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Affiliation(s)
- Kai Kitamura
- Graduate School of Pharmaceutical
Sciences, Nagoya City University, 3-1 Tanabe-dori, Mizuho-ku, Nagoya, Aichi 467-8603, Japan
| | - Mitsuyasu Kawaguchi
- Graduate School of Pharmaceutical
Sciences, Nagoya City University, 3-1 Tanabe-dori, Mizuho-ku, Nagoya, Aichi 467-8603, Japan
| | - Naoya Ieda
- Graduate School of Pharmaceutical
Sciences, Nagoya City University, 3-1 Tanabe-dori, Mizuho-ku, Nagoya, Aichi 467-8603, Japan
| | - Naoki Miyata
- Graduate School of Pharmaceutical
Sciences, Nagoya City University, 3-1 Tanabe-dori, Mizuho-ku, Nagoya, Aichi 467-8603, Japan
| | - Hidehiko Nakagawa
- Graduate School of Pharmaceutical
Sciences, Nagoya City University, 3-1 Tanabe-dori, Mizuho-ku, Nagoya, Aichi 467-8603, Japan
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Abstract
OBJECTIVES The aim of this review was to provide an overview of studies conducted to determine the effects of chlorogenic acid (CGA) on cognition and neurological health. METHODS A literature search was conducted using PubMed and various search terms including chlorogenic acid, CGA, memory, neuroscience, cognition, nutrition, antioxidant, pharmacokinetics, neuroprotection, and neurodegeneration. RESULTS Many studies have linked CGA consumption to a wide range of health benefits, including neuroprotection, cardioprotection, weight loss, chemopreventive properties, anti-inflammatory activity, decreased blood pressure, decreased diet-induced insulin resistance, decreased blood pressure, anxiolytic effects, and antihyperalgesic effects. Pre-clinical and clinical studies both provide evidence that CGA supplementation could protect against neurological degeneration and the resulting diseases associated with oxidative stress in the brain; however, no formal, well-controlled studies have been performed to date. DISCUSSION Recent research suggests that dietary consumption of CGA could produce a wide range of health benefits and physiological effects. There is also mounting evidence that the consumption of polyphenols, including CGA, in the diet could reduce the risk of developing neurodegenerative conditions. Further studies should be conducted with a focus on the effects of CGA on cognition and the nervous system and employing well-designed clinical studies.
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Affiliation(s)
- Erin Heitman
- a Nutritional Neuroscience and Aging Laboratory, Pennington Biomedical Research Center, LSU System , Baton Rouge , LA , USA
| | - Donald K Ingram
- a Nutritional Neuroscience and Aging Laboratory, Pennington Biomedical Research Center, LSU System , Baton Rouge , LA , USA
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Aarse J, Herlitze S, Manahan-Vaughan D. The requirement of BDNF for hippocampal synaptic plasticity is experience-dependent. Hippocampus 2016; 26:739-51. [PMID: 26662461 PMCID: PMC5066736 DOI: 10.1002/hipo.22555] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/03/2015] [Indexed: 12/05/2022]
Abstract
Brain‐derived neurotrophic factor (BDNF) supports neuronal survival, growth, and differentiation and has been implicated in forms of hippocampus‐dependent learning. In vitro, a specific role in hippocampal synaptic plasticity has been described, although not all experience‐dependent forms of synaptic plasticity critically depend on BDNF. Synaptic plasticity is likely to enable long‐term synaptic information storage and memory, and the induction of persistent (>24 h) forms, such as long‐term potentiation (LTP) and long‐term depression (LTD) is tightly associated with learning specific aspects of a spatial representation. Whether BDNF is required for persistent (>24 h) forms of LTP and LTD, and how it contributes to synaptic plasticity in the freely behaving rodent has never been explored. We examined LTP, LTD, and related forms of learning in the CA1 region of freely dependent mice that have a partial knockdown of BDNF (BDNF+/−). We show that whereas early‐LTD (<90min) requires BDNF, short‐term depression (<45 min) does not. Furthermore, BDNF is required for LTP that is induced by mild, but not strong short afferent stimulation protocols. Object‐place learning triggers LTD in the CA1 region of mice. We observed that object‐place memory was impaired and the object‐place exploration failed to induce LTD in BDNF+/− mice. Furthermore, spatial reference memory, that is believed to be enabled by LTP, was also impaired. Taken together, these data indicate that BDNF is required for specific, but not all, forms of hippocampal‐dependent information storage and memory. Thus, very robust forms of synaptic plasticity may circumvent the need for BDNF, rather it may play a specific role in the optimization of weaker forms of plasticity. The finding that both learning‐facilitated LTD and spatial reference memory are both impaired in BDNF+/− mice, suggests moreover, that it is critically required for the physiological encoding of hippocampus‐dependent memory. © 2015 The Authors Hippocampus Published by Wiley Periodicals, Inc.
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Affiliation(s)
- Janna Aarse
- Department of Neurophysiology, Medical Faculty.,International Graduate School of Neuroscience
| | - Stefan Herlitze
- Faculty of Biology and Biotechnology, Department of Zoology and Neurobiology Ruhr University, Bochum, 44780 Bochum, Germany
| | - Denise Manahan-Vaughan
- Department of Neurophysiology, Medical Faculty.,International Graduate School of Neuroscience
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Henningsson S, Zettergren A, Hovey D, Jonsson L, Svärd J, Cortes DS, Melke J, Ebner NC, Laukka P, Fischer H, Westberg L. Association between polymorphisms in NOS3 and KCNH2 and social memory. Front Neurosci 2015; 9:393. [PMID: 26539080 PMCID: PMC4612671 DOI: 10.3389/fnins.2015.00393] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2015] [Accepted: 10/06/2015] [Indexed: 12/14/2022] Open
Abstract
Social memory, including the ability to recognize faces and voices, is essential for social relationships. It has a large heritable component, but the knowledge about the contributing genes is sparse. The genetic variation underlying inter-individual differences in social memory was investigated in an exploratory sample (n = 55), genotyped with a chip comprising approximately 200,000 single nucleotide polymorphisms (SNPs), and in a validation sample (n = 582), where 30 SNPs were targeted. In the exploratory study face identity recognition was measured. The validation study also measured vocal sound recognition, as well as recognition of faces and vocal sounds combined (multimodal condition). In the exploratory study, the 30 SNPs that were associated with face recognition at puncorrected < 0.001 and located in genes, were chosen for further study. In the validation study two of these SNPs showed significant associations with recognition of faces, vocal sounds, and multimodal stimuli: rs1800779 in the gene encoding nitric oxide synthase 3 (NOS3) and rs3807370 in the gene encoding the voltage-gated channel, subfamily H, member 2 (KCNH2), in strong linkage disequilibrium with each other. The uncommon alleles were associated with superior performance, and the effects were present for men only (p < 0.0002). The exploratory study also showed a weaker but significant association with (non-emotional) word recognition, an effect that was independent of the effect on face recognition. This study demonstrates evidence for an association between NOS3 and KCNH2 SNPs and social memory.
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Affiliation(s)
- Susanne Henningsson
- Department of Pharmacology, Institute of Neuroscience and Physiology at the Sahlgrenska Academy, University of Gothenburg Gothenburg, Sweden
| | - Anna Zettergren
- Department of Pharmacology, Institute of Neuroscience and Physiology at the Sahlgrenska Academy, University of Gothenburg Gothenburg, Sweden ; Department of Psychiatry and Neurochemistry, Institute of Neuroscience and Physiology at the Sahlgrenska Academy, University of Gothenburg Gothenburg, Sweden
| | - Daniel Hovey
- Department of Pharmacology, Institute of Neuroscience and Physiology at the Sahlgrenska Academy, University of Gothenburg Gothenburg, Sweden
| | - Lina Jonsson
- Department of Pharmacology, Institute of Neuroscience and Physiology at the Sahlgrenska Academy, University of Gothenburg Gothenburg, Sweden
| | - Joakim Svärd
- Aging Research Center, Karolinska Institute Stockholm, Sweden
| | - Diana S Cortes
- Department of Psychology, Stockholm University Stockholm, Sweden
| | - Jonas Melke
- Department of Pharmacology, Institute of Neuroscience and Physiology at the Sahlgrenska Academy, University of Gothenburg Gothenburg, Sweden
| | - Natalie C Ebner
- Department of Psychology, University of Florida Gainesville, FL, USA ; Department of Aging and Geriatric Research, University of Florida Gainesville, FL, USA
| | - Petri Laukka
- Department of Psychology, Stockholm University Stockholm, Sweden
| | - Håkan Fischer
- Aging Research Center, Karolinska Institute Stockholm, Sweden ; Department of Psychology, Stockholm University Stockholm, Sweden
| | - Lars Westberg
- Department of Pharmacology, Institute of Neuroscience and Physiology at the Sahlgrenska Academy, University of Gothenburg Gothenburg, Sweden
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Huang CC, Lai CJ, Tsai MH, Wu YC, Chen KT, Jou MJ, Fu PI, Wu CH, Wei IH. Effects of melatonin on the nitric oxide system and protein nitration in the hypobaric hypoxic rat hippocampus. BMC Neurosci 2015; 16:61. [PMID: 26443997 PMCID: PMC4594671 DOI: 10.1186/s12868-015-0199-6] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2015] [Accepted: 09/08/2015] [Indexed: 01/10/2023] Open
Abstract
BACKGROUND It is well documented that the nitric oxide (NO) might be directly involved in brain response to hypobaric hypoxia, and could contribute to memory deficiencies. Recent studies have shown that melatonin could attenuate hypoxia or ischemia-induced nerve injuries by decreasing the production of free radicals. The present study, using immunohistochemical and immunoblot methods, aimed to explore whether melatonin treatment may affect the expression of nitric oxide system and protein nitration, and provide neuroprotection in the rat hippocampus injured by hypobaric hypoxia. Prior to hypoxic treatment, adult rats were pretreated with melatonin (100 mg/kg, i.p.) before they were exposed to the altitude chamber with 48 Torr of the partial oxygen concentration (pO2) for 7 h to mimic the ambience of being at 9000 m in height. They were then sacrificed after 0 h, 1, and 3 days of reoxygenation. RESULTS The results obtained from the immunohistochemical and immunoblotting analyses showed that the expressions of neuronal nitric oxide synthase (nNOS), endothelial nitric oxide synthase (eNOS), inducible nitric oxide synthase (iNOS), nitrotyrosine (Ntyr) and Caspase 3 in the hypoxic hippocampus were increased from 0 h to 3 days of reoxygenation. Interestingly, the hypoxia-induced increase of nNOS, eNOS, iNOS, Ntyr and Caspase 3 protein expression was significantly depressed in the hypoxic rats treated with melatonin. CONCLUSIONS Activation of the nitric oxide system and protein nitration constitutes a hippocampal response to hypobaric hypoxia and administration of melatonin could provide new therapeutic avenues to prevent and/or treat the symptoms produced by hypobaric hypoxia.
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Affiliation(s)
- Chih-Chia Huang
- Department of Psychiatry, China Medical University Hospital, No. 91 Hsueh-Shih Road, Taichung, Taiwan. .,Institute of Clinical Medical Science, China Medical University, No. 91 Hsueh-Shih Road, Taichung, Taiwan. .,Department of Psychiatry, China Medical University, No. 91 Hsueh-Shih Road, Taichung, Taiwan.
| | - Chia-Jou Lai
- Institute of Basic Medical Science, China Medical University, No. 91 Hsueh-Shih Road, Taichung, Taiwan.
| | - Mang-Hung Tsai
- Department of Anatomy, China Medical University, No. 91 Hsueh-Shih Road, Taichung, Taiwan.
| | - Ya-Chieh Wu
- Department of Nursing, Ching-Kuo Institute of Management and Health, 336, Fu-Hsin Road, Keelung, Taiwan.
| | - Kuang-Ti Chen
- Institute of Basic Medical Science, China Medical University, No. 91 Hsueh-Shih Road, Taichung, Taiwan.
| | - Ming-Jia Jou
- School of Chinese Medicine for Post Baccalaureate, I Shou University, No. 1, Sec. 1, Syuecheng Road, Dashu District, Kaohsiung, Taiwan.
| | - Pin-I Fu
- Department of Anatomy, China Medical University, No. 91 Hsueh-Shih Road, Taichung, Taiwan.
| | - Ching-Hsiang Wu
- Department of Anatomy and Cell Biology, College of Medicine, Taipei Medical University, 250 Wuxing Street, Taipei, Taiwan.
| | - I-Hua Wei
- Department of Anatomy, China Medical University, No. 91 Hsueh-Shih Road, Taichung, Taiwan.
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Colocalization of cannabinoid receptor 1 with somatostatin and neuronal nitric oxide synthase in rat brain hippocampus. Brain Res 2015; 1622:114-26. [DOI: 10.1016/j.brainres.2015.06.021] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2015] [Revised: 06/10/2015] [Accepted: 06/12/2015] [Indexed: 02/07/2023]
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Anaeigoudari A, Shafei MN, Soukhtanloo M, Sadeghnia HR, Reisi P, Nosratabadi R, Behradnia S, Hosseini M. The effects of L-arginine on spatial memory and synaptic plasticity impairments induced by lipopolysaccharide. Adv Biomed Res 2015; 4:202. [PMID: 26601090 PMCID: PMC4620614 DOI: 10.4103/2277-9175.166138] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2015] [Accepted: 07/06/2015] [Indexed: 01/07/2023] Open
Abstract
Background: An important role of nitric oxide (NO) in neuroinflammation has been suggested. It is also suggested that NO has a critical role in learning and memory. Neuro-inflammation induced by lipopolysaccharide (LPS) has been reported that deteriorates learning and memory. The effect of L-arginine (LA) as a precursor of NO on LPS-induced spatial learning and memory and neuronal plasticity impairment was evaluated. Materials and Methods: The animals were grouped into: (1) Control, (2) LPS, (3) LA-LPS, and (4) LA. The rats received intraperitoneally LPS (1 mg/kg) 2 h before experiments and LA (200 mg/kg) 30 min before LPS. The animals were examined in Morris water maze (MWM). Long-term potentiation (LTP) from CA1 area of the hippocampus was also assessed by 100 Hz stimulation in the ipsilateral Schaffer collateral pathway. Results: In MWM, time latency and traveled path were higher in LPS group than the control group (P < 0.001) whereas in LA-LPS group they were shorter than LPS group (P < 0.001). The amplitude and slope of field excitatory postsynaptic potential (fEPSP) decreased in LPS group compared to control group (P < 0.05 and P < 0.01) whereas, there was not any significant difference in these parameters between LPS and LA-LPS groups. Conclusion: Administration of LPS impaired spatial memory and synaptic plasticity. Although LA ameliorated deleterious effects of LPS on learning of spatial tasks, it could not restore LPS-induced LTP impairment.
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Affiliation(s)
- Akbar Anaeigoudari
- Neurocognitive Research Center, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Mohammad Naser Shafei
- Neurocognitive Research Center, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Mohammad Soukhtanloo
- Department of Biochemistry, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Hamid Reza Sadeghnia
- Pharmacological Research Center of Medicinal Plants, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Parham Reisi
- Department of Physiology, School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Reza Nosratabadi
- Immunology Research Center, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Sepehr Behradnia
- Neurogenic Inflammation Research Center, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Mahmoud Hosseini
- Neurogenic Inflammation Research Center, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
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Yang Y, Qi P, Yang Z, Huang N. Nitric oxide based strategies for applications of biomedical devices. BIOSURFACE AND BIOTRIBOLOGY 2015. [DOI: 10.1016/j.bsbt.2015.08.003] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
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Mutlu O, Akar F, Celikyurt IK, Tanyeri P, Ulak G, Erden F. 7-NI and ODQ Disturbs Memory in the Elevated Plus Maze, Morris Water Maze, and Radial Arm Maze Tests in Mice. Drug Target Insights 2015; 9:1-8. [PMID: 25788830 PMCID: PMC4354329 DOI: 10.4137/dti.s23378] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2015] [Revised: 02/02/2015] [Accepted: 02/10/2015] [Indexed: 11/17/2022] Open
Abstract
Nitric oxide (NO) is an atypical neurotransmitter that causes changes in cognition. Nitric oxide synthase (NOS) and guanylate cyclase (GC) inhibitors have been shown to exert some effects on cognition in previous studies; however, the findings have been controversial. This study was aimed at understanding the effects of an NOS inhibitor, 7-nitroindazole (7-NI), and a guanylate cyclase inhibitor, 1H-[1,2,4]oxadiazolo[4,3-a]quinoxalin-1-one (ODQ), on spatial memory in modified elevated plus maze (mEPM), Morris water maze (MWM), and radial arm maze (RAM) tests. Male Balb-c mice were treated via intraperitoneal injections with 7-NI (15 mg/kg), ODQ (3, 10 mg/kg), L-arginine (100 mg/kg) + 7-NI (15 mg/kg), or physiological saline. ODQ (3 mg/kg) and 7-NI (15 mg/kg) significantly increased the second-day latency in the mEPM test. 7-NI (15 mg/kg) and ODQ (10 mg/kg) significantly increased the escape latency in second, third, and fourth sessions, decreased the time spent in the escape platform’s quadrant, and increased the mean distance to the platform in the probe trial of the MWM test. ODQ (3, 10 mg/kg) and 7-NI (15 mg/kg) significantly increased the number of errors, whereas only 7-NI increased the latency in the RAM test. The administration of L-arginine (100 mg/kg) prior to 7-NI inverted the effects of 7-NI, which supports the role of NO on cognition. Our study shows that the NO/cGMP/GS pathway can regulate spatial memory in mice.
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Affiliation(s)
- Oguz Mutlu
- Department of Pharmacology, Kocaeli University Medical Faculty, Kocaeli, Turkey
| | - Furuzan Akar
- Department of Pharmacology, Kocaeli University Medical Faculty, Kocaeli, Turkey
| | | | - Pelin Tanyeri
- Department of Pharmacology, Faculty of Medicine, Sakarya University, Sakarya, Turkey
| | - Guner Ulak
- Department of Pharmacology, Kocaeli University Medical Faculty, Kocaeli, Turkey
| | - Faruk Erden
- Department of Pharmacology, Kocaeli University Medical Faculty, Kocaeli, Turkey
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Gocmez SS, Yazir Y, Sahin D, Karadenizli S, Utkan T. The effect of a selective neuronal nitric oxide synthase inhibitor 3-bromo 7-nitroindazole on spatial learning and memory in rats. Pharmacol Biochem Behav 2015; 131:19-25. [PMID: 25636602 DOI: 10.1016/j.pbb.2015.01.013] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/03/2013] [Revised: 01/15/2015] [Accepted: 01/20/2015] [Indexed: 11/25/2022]
Abstract
Since the discovery of nitric oxide (NO) as a neuronal messenger, its way to modulate learning and memory functions is subject of intense research. NO is an intercellular messenger in the central nervous system and is formed on demand through the conversion of L-arginine to L-citrulline via the enzyme nitric oxide synthase (NOS). Neuronal form of nitric oxide synthase may play an important role in a wide range of physiological and pathological conditions. Therefore the aim of this study was to investigate the effects of chronic 3-bromo 7-nitroindazole (3-Br 7-NI), specific neuronal nitric oxide synthase (nNOS) inhibitor, administration on spatial learning and memory performance in rats using the Morris water maze (MWM) paradigm. Male rats received either 3-Br 7-NI (20mg/kg/day) or saline via intraperitoneal injection for 5days. Daily administration of the specific neuronal nitric oxide synthase (nNOS) inhibitor, 3-Br 7-NI impaired the acquisition of the MWM task. 3-Br 7-NI also impaired the probe trial. The MWM training was associated with a significant increase in the brain-derived neurotrophic factor (BDNF) mRNA expression in the hippocampus. BDNF mRNA expression in the hippocampus did not change after 3-Br 7-NI treatment. L-arginine significantly reversed behavioural parameters, and the effect of 3-Br 7-NI was found to be NO-dependent. There were no differences in locomotor activity and blood pressure in 3-Br 7-NI treated rats. Our results may suggest that nNOS plays a key role in spatial memory formation in rats.
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Affiliation(s)
- Semil Selcen Gocmez
- Namık Kemal University, Faculty of Medicine, Department of Pharmacology, 59030 Tekirdag, Turkey.
| | - Yusufhan Yazir
- Kocaeli University, Faculty of Medicine, Department of Histology and Embryology, Umuttepe 41380, Kocaeli, Turkey.
| | - Deniz Sahin
- Kocaeli University, Faculty of Medicine, Department of Physiology, Umuttepe 41380, Kocaeli, Turkey.
| | - Sabriye Karadenizli
- Kocaeli University, Faculty of Medicine, Department of Physiology, Umuttepe 41380, Kocaeli, Turkey.
| | - Tijen Utkan
- Kocaeli University, Faculty of Medicine, Department of Pharmacology and Experimental Medical Research and Application Unit, Umuttepe 41380, Kocaeli, Turkey.
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Santos AI, Martínez-Ruiz A, Araújo IM. S-nitrosation and neuronal plasticity. Br J Pharmacol 2014; 172:1468-78. [PMID: 24962517 DOI: 10.1111/bph.12827] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2014] [Revised: 05/08/2014] [Accepted: 06/09/2014] [Indexed: 12/22/2022] Open
Abstract
Nitric oxide (NO) has long been recognized as a multifaceted participant in brain physiology. Despite the knowledge that was gathered over many years regarding the contribution of NO to neuronal plasticity, for example the ability of the brain to change in response to new stimuli, only in recent years have we begun to understand how NO acts on the molecular and cellular level to orchestrate such important phenomena as synaptic plasticity (modification of the strength of existing synapses) or the formation of new synapses (synaptogenesis) and new neurons (neurogenesis). Post-translational modification of proteins by NO derivatives or reactive nitrogen species is a non-classical mechanism for signalling by NO. S-nitrosation is a reversible post-translational modification of thiol groups (mainly on cysteines) that may result in a change of function of the modified protein. S-nitrosation of key target proteins has emerged as a main regulatory mechanism by which NO can influence several levels of brain plasticity, which are reviewed in this work. Understanding how S-nitrosation contributes to neural plasticity can help us to better understand the physiology of these processes, and to better address pathological changes in plasticity that are involved in the pathophysiology of several neurological diseases.
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Affiliation(s)
- A I Santos
- Department of Biomedical Sciences and Medicine, University of Algarve, Faro, Portugal; IBB - Institute for Biotechnology and Bioengineering, Centre for Molecular and Structural Biomedicine, University of Algarve, Faro, Portugal; Centre for Neuroscience and Cell Biology, University of Coimbra, Coimbra, Portugal
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Sexual experience influences mating-induced activity in nitric oxide synthase-containing neurons in the medial preoptic area. Neurosci Lett 2014; 579:92-6. [PMID: 25058433 DOI: 10.1016/j.neulet.2014.07.021] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2014] [Revised: 07/10/2014] [Accepted: 07/14/2014] [Indexed: 11/20/2022]
Abstract
Nitric oxide (NO) acts in the medial preoptic area (mPOA) of the hypothalamus to facilitate the expression of male sexual behavior and has also been widely implicated in mechanisms of experience, learning, and memory. Using immunohistochemistry for Fos, as a marker for neural activity, and nitric oxide synthase (NOS), the enzyme that catalyzes the production of nitric oxide (NO), we examined whether sexual activity and sexual experience influence Fos co-expression in NOS-containing neurons in the mPOA of male rats. Consistent with previous findings, results indicate that mating increased activity in the mPOA, and that sexual experience facilitated the expression of sexual behaviors, together with increased mating-induced Fos and NOS in the mPOA. Results also indicate that mating increased co-expression of Fos in NOS-containing neurons, and that this increase was highest in animals undergoing their first sexual encounter, indicating that initial sexual experience increases NO production in the mPOA of male rats.
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Kleberg FI, Fukai T, Gilson M. Excitatory and inhibitory STDP jointly tune feedforward neural circuits to selectively propagate correlated spiking activity. Front Comput Neurosci 2014; 8:53. [PMID: 24847242 PMCID: PMC4019846 DOI: 10.3389/fncom.2014.00053] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2013] [Accepted: 04/10/2014] [Indexed: 11/13/2022] Open
Abstract
Spike-timing-dependent plasticity (STDP) has been well established between excitatory neurons and several computational functions have been proposed in various neural systems. Despite some recent efforts, however, there is a significant lack of functional understanding of inhibitory STDP (iSTDP) and its interplay with excitatory STDP (eSTDP). Here, we demonstrate by analytical and numerical methods that iSTDP contributes crucially to the balance of excitatory and inhibitory weights for the selection of a specific signaling pathway among other pathways in a feedforward circuit. This pathway selection is based on the high sensitivity of STDP to correlations in spike times, which complements a recent proposal for the role of iSTDP in firing-rate based selection. Our model predicts that asymmetric anti-Hebbian iSTDP exceeds asymmetric Hebbian iSTDP for supporting pathway-specific balance, which we show is useful for propagating transient neuronal responses. Furthermore, we demonstrate how STDPs at excitatory-excitatory, excitatory-inhibitory, and inhibitory-excitatory synapses cooperate to improve the pathway selection. We propose that iSTDP is crucial for shaping the network structure that achieves efficient processing of synchronous spikes.
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Affiliation(s)
- Florence I Kleberg
- Lab for Neural Circuit Theory, RIKEN Brain Science Institute Wako, Japan
| | - Tomoki Fukai
- Lab for Neural Circuit Theory, RIKEN Brain Science Institute Wako, Japan
| | - Matthieu Gilson
- Lab for Neural Circuit Theory, RIKEN Brain Science Institute Wako, Japan
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Akar F, Mutlu O, Komsuoglu Celikyurt I, Bektas E, Tanyeri P, Ulak G, Erden F. Effects of 7-NI and ODQ on memory in the passive avoidance, novel object recognition, and social transmission of food preference tests in mice. Med Sci Monit Basic Res 2014; 20:27-35. [PMID: 24643075 PMCID: PMC3969052 DOI: 10.12659/msmbr.890438] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
Abstract
Background Nitric oxide (NO) is an intercellular messenger that plays a critical role in learning and memory processes. Effects of nitric oxide synthase (NOS) inhibitors and guanylate cyclase (GC) inhibitors on cognitive function remain controversial. Material/Methods The aim of this study was to investigate effects of an NOS inhibitor, 7-nitroindazole (7-NI), and a GC inhibitor, 1H-[1,2,4]oxadiazolo[4,3-a]quinoxalin-1-one (ODQ), on different aspects of memory in passive avoidance (PA), novel object recognition (NOR), and social transmission of food preference (STFP) tests. Male Balb-c mice were treated intraperitoneally with 7-NI (15 mg/kg), ODQ (3,10 mg/kg), L-arginine (100 mg/kg) + 7-NI (15 mg/kg), or physiological saline. Results ODQ (10 mg/kg) and 7-NI (15 mg/kg) significantly decreased second-day latency in PA test. 7-NI (15 mg/kg) and ODQ (10 mg/kg) significantly decreased the ratio index in the NOR test. 7-NI and ODQ (10 mg/kg) decreased cued/non-cued food eaten in STFP test. Amount of time spent in center zone significantly increased in ODQ (10 mg/kg) and 7-NI (15 mg/kg) groups in open field test, but there was no effect on total distance moved and speed of animals. ODQ (10 mg/kg) significantly increased number of entries into new compartments in exploratory activity apparatus, while 7-NI had no effect. Administration of L-arginine (100 mg/kg) before 7-NI reversed 7-NI-induced effects, supporting the role of NO in cognition. Conclusions Our results confirm that inhibition of NO/cGMP/GS pathway might disturb emotional, visual, and olfactory memory in mice. Also, 7-NI and ODQ had anxiolytic effects in open field test, and ODQ also enhanced exploratory activity.
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Affiliation(s)
- Furuzan Akar
- Department of Pharmacology, Kocaeli University, Medical Faculty, Kocaeli, Turkey
| | - Oguz Mutlu
- Department of Pharmacology, Kocaeli University, Medical Faculty, Kocaeli, Turkey
| | | | - Emine Bektas
- Department of Pharmacology, Kocaeli University, Medical Faculty, Kocaeli, Turkey
| | - Pelin Tanyeri
- Department of Pharmacology, Sakarya University, Medical Faculty, Sakarya, Turkey
| | - Guner Ulak
- Department of Pharmacology, Kocaeli University, Medical Faculty, Kocaeli, Turkey
| | - Faruk Erden
- Department of Pharmacology, Kocaeli University, Medical Faculty, Kocaeli, Turkey
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