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Kaliszewska A, Allison J, Martini M, Arias N. Improving Age-Related Cognitive Decline through Dietary Interventions Targeting Mitochondrial Dysfunction. Int J Mol Sci 2021; 22:ijms22073574. [PMID: 33808221 PMCID: PMC8036520 DOI: 10.3390/ijms22073574] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2021] [Revised: 03/24/2021] [Accepted: 03/25/2021] [Indexed: 12/13/2022] Open
Abstract
Aging is inevitable and it is one of the major contributors to cognitive decline. However, the mechanisms underlying age-related cognitive decline are still the object of extensive research. At the biological level, it is unknown how the aging brain is subjected to progressive oxidative stress and neuroinflammation which determine, among others, mitochondrial dysfunction. The link between mitochondrial dysfunction and cognitive impairment is becoming ever more clear by the presence of significant neurological disturbances in human mitochondrial diseases. Possibly, the most important lifestyle factor determining mitochondrial functioning is nutrition. Therefore, with the present work, we review the latest findings disclosing a link between nutrition, mitochondrial functioning and cognition, and pave new ways to counteract cognitive decline in late adulthood through diet.
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Affiliation(s)
- Aleksandra Kaliszewska
- Department of Basic and Clinical Neuroscience, Institute of Psychiatry, Psychology and Neuroscience, King’s College London, Denmark Hill, London SE5 8AF, UK; (A.K.); (J.A.)
| | - Joseph Allison
- Department of Basic and Clinical Neuroscience, Institute of Psychiatry, Psychology and Neuroscience, King’s College London, Denmark Hill, London SE5 8AF, UK; (A.K.); (J.A.)
| | - Matteo Martini
- Department of Psychology, University of East London, London E154LZ, UK;
| | - Natalia Arias
- Department of Basic and Clinical Neuroscience, Institute of Psychiatry, Psychology and Neuroscience, King’s College London, Denmark Hill, London SE5 8AF, UK; (A.K.); (J.A.)
- Instituto de Neurociencias del Principado de Asturias (INEUROPA), 33005 Oviedo, Spain
- Correspondence:
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2
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Parkhitko AA, Ramesh D, Wang L, Leshchiner D, Filine E, Binari R, Olsen AL, Asara JM, Cracan V, Rabinowitz JD, Brockmann A, Perrimon N. Downregulation of the tyrosine degradation pathway extends Drosophila lifespan. eLife 2020; 9:58053. [PMID: 33319750 PMCID: PMC7744100 DOI: 10.7554/elife.58053] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2020] [Accepted: 11/28/2020] [Indexed: 12/31/2022] Open
Abstract
Aging is characterized by extensive metabolic reprogramming. To identify metabolic pathways associated with aging, we analyzed age-dependent changes in the metabolomes of long-lived Drosophila melanogaster. Among the metabolites that changed, levels of tyrosine were increased with age in long-lived flies. We demonstrate that the levels of enzymes in the tyrosine degradation pathway increase with age in wild-type flies. Whole-body and neuronal-specific downregulation of enzymes in the tyrosine degradation pathway significantly extends Drosophila lifespan, causes alterations of metabolites associated with increased lifespan, and upregulates the levels of tyrosine-derived neuromediators. Moreover, feeding wild-type flies with tyrosine increased their lifespan. Mechanistically, we show that suppression of ETC complex I drives the upregulation of enzymes in the tyrosine degradation pathway, an effect that can be rescued by tigecycline, an FDA-approved drug that specifically suppresses mitochondrial translation. In addition, tyrosine supplementation partially rescued lifespan of flies with ETC complex I suppression. Altogether, our study highlights the tyrosine degradation pathway as a regulator of longevity.
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Affiliation(s)
- Andrey A Parkhitko
- Department of Genetics, Blavatnik Institute, Harvard Medical School, Boston, United States.,Aging Institute of UPMC and the University of Pittsburgh, Pittsburgh, United States
| | - Divya Ramesh
- National Centre for Biological Sciences, Tata Institute of Fundamental Research, Bangalore, India.,Department of Biology, University of Konstanz, Konstanz, Germany
| | - Lin Wang
- Department of Chemistry, Princeton University, Princeton, United States.,Lewis-Sigler Institute for Integrative Genomics, Princeton University, Princeton, United States
| | - Dmitry Leshchiner
- Department of Genetics, Blavatnik Institute, Harvard Medical School, Boston, United States
| | - Elizabeth Filine
- Department of Genetics, Blavatnik Institute, Harvard Medical School, Boston, United States
| | - Richard Binari
- Department of Genetics, Blavatnik Institute, Harvard Medical School, Boston, United States.,Howard Hughes Medical Institute, Boston, United States
| | - Abby L Olsen
- Department of Neurology, Brigham and Women's Hospital, Massachusetts General Hospital, Harvard Medical School, Boston, United States
| | - John M Asara
- Division of Signal Transduction, Beth Israel Deaconess Medical Center, and Department of Medicine, Harvard Medical School, Boston, United States
| | - Valentin Cracan
- Scintillon Institute, San Diego, United States.,Department of Chemistry, The Scripps Research Institute, La Jolla, United States
| | - Joshua D Rabinowitz
- Department of Chemistry, Princeton University, Princeton, United States.,Lewis-Sigler Institute for Integrative Genomics, Princeton University, Princeton, United States
| | - Axel Brockmann
- National Centre for Biological Sciences, Tata Institute of Fundamental Research, Bangalore, India
| | - Norbert Perrimon
- Department of Genetics, Blavatnik Institute, Harvard Medical School, Boston, United States.,Howard Hughes Medical Institute, Boston, United States
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3
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Zhang Q, Huang R, Hu H, Yu L, Tang Q, Tao Y, Liu Z, Li J, Wang G. Integrative Analysis of Hypoxia-Associated Signature in Pan-Cancer. iScience 2020; 23:101460. [PMID: 32861996 PMCID: PMC7476856 DOI: 10.1016/j.isci.2020.101460] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2020] [Revised: 07/18/2020] [Accepted: 08/12/2020] [Indexed: 02/06/2023] Open
Abstract
Hypoxia is serving crucial roles in cancers. This study aims to comprehensively analyze the molecular features and clinical relevance of a well-defined hypoxia-associated signature in pan-cancer using multi-omics data. Data were acquired from TCGA, CCLE, GDSC, and GEO. RNA expression pattern, copy number variation (CNV), methylation, and mutation of the signature were analyzed. The majority of the 15 genes were upregulated in cancer tissues compared with normal tissue, and RNA expression was negatively associated with methylation level. CNV occurred in almost all the cancers, whereas mutation frequency was low across different cancer types. The signature was also closely related to cancer hallmarks and cancer-related metabolism pathways. NDRG1 was upregulated in kidney cancer tissues as indicated by immunohistochemistry. Besides, most of the 15 genes were risk factors for patients' overall survival. Our results provide a valuable resource that will guide both mechanistic and therapeutic analyses of the hypoxia signature in cancers.
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Affiliation(s)
- Qian Zhang
- Department of Colorectal Surgery, the Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang Province 150086, China
| | - Rui Huang
- Department of Colorectal Surgery, the Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang Province 150086, China
| | - Hanqing Hu
- Department of Colorectal Surgery, the Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang Province 150086, China
| | - Lei Yu
- Department of Colorectal Surgery, the Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang Province 150086, China
| | - Qingchao Tang
- Department of Colorectal Surgery, the Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang Province 150086, China
| | - Yangbao Tao
- Department of Colorectal Surgery, the Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang Province 150086, China
| | - Zheng Liu
- Department of Colorectal Surgery, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Science and Peking Union Medical College, Beijing 100000, China
| | - Jiaying Li
- Department of Colorectal Surgery, the Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang Province 150086, China
| | - Guiyu Wang
- Department of Colorectal Surgery, the Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang Province 150086, China
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4
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Metabolic response of longitudinal muscles to acute hypoxia in sea cucumber Apostichopus japonicus (Selenka): A metabolome integrated analysis. COMPARATIVE BIOCHEMISTRY AND PHYSIOLOGY D-GENOMICS & PROTEOMICS 2019; 29:235-244. [DOI: 10.1016/j.cbd.2018.12.007] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/27/2018] [Revised: 12/23/2018] [Accepted: 12/23/2018] [Indexed: 01/16/2023]
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5
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Mo TT, Dai H, Du H, Zhang RY, Chai KP, An Y, Chen JJ, Wang JK, Chen ZJ, Chen CZ, Jiang XJ, Tang R, Wang LP, Tan Q, Tang P, Miao XY, Meng P, Zhang LB, Cheng SQ, Peng B, Tu BJ, Han TL, Xia YY, Baker PN. Gas chromatography-mass spectrometry based metabolomics profile of hippocampus and cerebellum in mice after chronic arsenic exposure. ENVIRONMENTAL TOXICOLOGY 2019; 34:103-111. [PMID: 30375170 DOI: 10.1002/tox.22662] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/16/2018] [Revised: 09/07/2018] [Accepted: 09/16/2018] [Indexed: 06/08/2023]
Abstract
Intake of arsenic (As) via drinking water has been a serious threat to global public health. Though there are numerous reports of As neurotoxicity, its pathogenesis mechanisms remain vague especially its chronic effects on metabolic network. Hippocampus is a renowned area in relation to learning and memory, whilst recently, cerebellum is argued to be involved with process of cognition. Therefore, the study aimed to explore metabolomics alternations in these two areas after chronic As exposure, with the purpose of further illustrating details of As neurotoxicity. Twelve 3-week-old male C57BL/6J mice were divided into two groups, receiving deionized drinking water (control group) or 50 mg/L of sodium arsenite (via drinking water) for 24 weeks. Learning and memory abilities were tested by Morris water maze (MWM) test. Pathological and morphological changes of hippocampus and cerebellum were captured via transmission electron microscopy (TEM). Metabolic alterations were analyzed by gas chromatography-mass spectrometry (GC-MS). MWM test confirmed impairments of learning and memory abilities of mice after chronic As exposure. Metabolomics identifications indicated that tyrosine increased and aspartic acid (Asp) decreased simultaneously in both hippocampus and cerebellum. Intermediates (succinic acid) and indirect involved components of tricarboxylic acid cycle (proline, cysteine, and alanine) were found declined in cerebellum, indicating disordered energy metabolism. Our findings suggest that these metabolite alterations are related to As-induced disorders of amino acids and energy metabolism, which might therefore, play an important part in mechanisms of As neurotoxicity.
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Affiliation(s)
- Ting-Ting Mo
- School of Public Health and Management, Research Center for Medicine and Social Development, Innovation Center for Social Risk Governance in Health, Chongqing Medical University, Chongqing, China
| | - Hua Dai
- Department of Public Health, Guiyang Center for Disease Control and Prevention, Guiyang, China
| | - Hang Du
- Center of Experimental Medicine, Chongqing Municipal Hospital for Prevention and Control of Occupational Diseases, Chongqing, China
| | - Rui-Yuan Zhang
- School of Public Health and Management, Research Center for Medicine and Social Development, Innovation Center for Social Risk Governance in Health, Chongqing Medical University, Chongqing, China
| | - Ke-Ping Chai
- School of Public Health and Management, Research Center for Medicine and Social Development, Innovation Center for Social Risk Governance in Health, Chongqing Medical University, Chongqing, China
| | - Yao An
- School of Public Health and Management, Research Center for Medicine and Social Development, Innovation Center for Social Risk Governance in Health, Chongqing Medical University, Chongqing, China
| | - Ji-Ji Chen
- School of Public Health and Management, Research Center for Medicine and Social Development, Innovation Center for Social Risk Governance in Health, Chongqing Medical University, Chongqing, China
| | - Jun-Ke Wang
- School of Public Health and Management, Research Center for Medicine and Social Development, Innovation Center for Social Risk Governance in Health, Chongqing Medical University, Chongqing, China
| | - Zi-Jin Chen
- School of Public Health and Management, Research Center for Medicine and Social Development, Innovation Center for Social Risk Governance in Health, Chongqing Medical University, Chongqing, China
| | - Cheng-Zhi Chen
- School of Public Health and Management, Research Center for Medicine and Social Development, Innovation Center for Social Risk Governance in Health, Chongqing Medical University, Chongqing, China
| | - Xue-Jun Jiang
- School of Public Health and Management, Research Center for Medicine and Social Development, Innovation Center for Social Risk Governance in Health, Chongqing Medical University, Chongqing, China
| | - Rong Tang
- School of Public Health and Management, Research Center for Medicine and Social Development, Innovation Center for Social Risk Governance in Health, Chongqing Medical University, Chongqing, China
| | - Li-Ping Wang
- School of Public Health and Management, Research Center for Medicine and Social Development, Innovation Center for Social Risk Governance in Health, Chongqing Medical University, Chongqing, China
| | - Qiang Tan
- School of Public Health and Management, Research Center for Medicine and Social Development, Innovation Center for Social Risk Governance in Health, Chongqing Medical University, Chongqing, China
| | - Ping Tang
- School of Public Health and Management, Research Center for Medicine and Social Development, Innovation Center for Social Risk Governance in Health, Chongqing Medical University, Chongqing, China
| | - Xin-Yu Miao
- School of Public Health and Management, Research Center for Medicine and Social Development, Innovation Center for Social Risk Governance in Health, Chongqing Medical University, Chongqing, China
| | - Pan Meng
- School of Public Health and Management, Research Center for Medicine and Social Development, Innovation Center for Social Risk Governance in Health, Chongqing Medical University, Chongqing, China
| | - Long-Bin Zhang
- School of Public Health and Management, Research Center for Medicine and Social Development, Innovation Center for Social Risk Governance in Health, Chongqing Medical University, Chongqing, China
| | - Shu-Qun Cheng
- School of Public Health and Management, Research Center for Medicine and Social Development, Innovation Center for Social Risk Governance in Health, Chongqing Medical University, Chongqing, China
| | - Bin Peng
- Department of Statistics, School of Public Health and Management, Chongqing Medical University, Chongqing, China
| | - Bai-Jie Tu
- School of Public Health and Management, Research Center for Medicine and Social Development, Innovation Center for Social Risk Governance in Health, Chongqing Medical University, Chongqing, China
| | - Ting-Li Han
- The Liggins Institute, University of Auckland, Auckland, New Zealand
- China-Canada-New Zealand Joint Laboratory of Maternal and Fetal Medicine, Chongqing Medical University, Chongqing, China
| | - Yin-Yin Xia
- School of Public Health and Management, Research Center for Medicine and Social Development, Innovation Center for Social Risk Governance in Health, Chongqing Medical University, Chongqing, China
- China-Canada-New Zealand Joint Laboratory of Maternal and Fetal Medicine, Chongqing Medical University, Chongqing, China
| | - Philip N Baker
- College of Medicine, Biological Sciences and Psychology, University of Leicester, Leicester, United Kingdom
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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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7
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Hypobaric Hypoxia-Induced Learning and Memory Impairment: Elucidating the Role of Small Conductance Ca2+-Activated K+ Channels. Neuroscience 2018; 388:418-429. [DOI: 10.1016/j.neuroscience.2018.07.026] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2018] [Revised: 07/11/2018] [Accepted: 07/13/2018] [Indexed: 11/19/2022]
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8
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Hypoxia-Induced Neuroinflammation and Learning-Memory Impairments in Adult Zebrafish Are Suppressed by Glucosamine. Mol Neurobiol 2018; 55:8738-8753. [PMID: 29589284 DOI: 10.1007/s12035-018-1017-9] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2017] [Accepted: 03/16/2018] [Indexed: 10/17/2022]
Abstract
This study investigated changes in neuroinflammation and cognitive function in adult zebrafish exposed to acute hypoxia and protective effects of glucosamine (GlcN) against hypoxia-induced brain damage. The survival rate of zebrafish following exposure to hypoxia was improved by GlcN pretreatment. Moreover, hypoxia-induced upregulation of neuroglobin, NOS2α, glial fibrillary acidic protein, and S100β in zebrafish was suppressed by GlcN. Hypoxia stimulated cell proliferation in the telencephalic ventral domain and in cerebellum subregions. GlcN decreased the number of bromodeoxyuridine (BrdU)-positive cells in the telencephalon region, but not in cerebellum regions. Transient motor neuron defects, assessed by measuring the locomotor and exploratory activity of zebrafish exposed to hypoxia recovered quickly. GlcN did not affect hypoxia-induced motor activity changes. In passive avoidance tests, hypoxia impaired learning and memory ability, deficits that were rescued by GlcN. A learning stimulus increased the nuclear translocation of phosphorylated cAMP response element binding protein (p-CREB), an effect that was greatly inhibited by hypoxia. GlcN restored nuclear p-CREB after a learning trial in hypoxia-exposed zebrafish. The neurotransmitters, γ-aminobutyric acid and glutamate, were increased after hypoxia in the zebrafish brain, and GlcN further increased their levels. In contrast, acetylcholine levels were reduced by hypoxia and restored by GlcN. Acetylcholinesterase inhibitor physostigmine partially reversed the impaired learning and memory of hypoxic zebrafish. This study represents the first examination of the molecular mechanisms underlying hypoxia-induced memory and learning defects in a zebrafish model. Our results further suggest that GlcN-associated hexosamine metabolic pathway could be an important therapeutic target for hypoxic brain damage.
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9
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Effects of amino acid derivatives on physical, mental, and physiological activities. Crit Rev Food Sci Nutr 2016; 55:1793-807. [PMID: 24279396 DOI: 10.1080/10408398.2012.708368] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Nutritional ergogenic aids have been in use for a long time to enhance exercise and sports performance. Dietary components that exhibit ergogenic activity are numerous and their consumption is common and popular among athletes. They often come under scrutiny by legal authorities for their claimed benefits and safety concerns. Amino acid derivatives are propagated as being effective aids to enhance physical and mental performance in many ways, even though studies have pointed out that individuals who are deficient are more likely to benefit from dietary supplementation of amino acid derivatives than normal humans. In this review, some of the most common and widely used amino acids derivatives in sports and athletics namely creatine, tyrosine, carnitine, HMB, and taurine have been discussed for their effects on exercise performance, mental activity as well as body strength and composition. Creatine, carnitine, HMB, and taurine are reported to delay the onset of fatigue, improve exercise performance, and body strength. HMB helps in increasing fat-free mass and reduce exercise induced muscle injury. Taurine has been found to reduce oxidative stress during exercise and also act as an antihypertensive agent. Although, studies have not been able to find any favorable effect of tyrosine administration on exercise performance, it has been proved to be very effective in fighting stress, improving mood and cognitive performance particularly in sleep-deprived subjects. While available data from published studies and findings are equivocal about the efficacy of creatine, tyrosine, and HMB, more comprehensive researches on carnitine and taurine are necessary to provide evidence for the theoretical basis of their ergogenic role in nutritional modification and supplementation.
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10
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López-Ramos JC, Duran J, Gruart A, Guinovart JJ, Delgado-García JM. Role of brain glycogen in the response to hypoxia and in susceptibility to epilepsy. Front Cell Neurosci 2015; 9:431. [PMID: 26578889 PMCID: PMC4621300 DOI: 10.3389/fncel.2015.00431] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2015] [Accepted: 10/13/2015] [Indexed: 12/23/2022] Open
Abstract
Although glycogen is the only carbohydrate reserve of the brain, its overall contribution to brain functions remains unclear. It has been proposed that glycogen participates in the preservation of such functions during hypoxia. Several reports also describe a relationship between brain glycogen and susceptibility to epilepsy. To address these issues, we used our brain-specific Glycogen Synthase knockout (GYS1Nestin-KO) mouse to study the functional consequences of glycogen depletion in the brain under hypoxic conditions and susceptibility to epilepsy. GYS1Nestin-KO mice presented significantly different power spectra of hippocampal local field potentials (LFPs) than controls under hypoxic conditions. In addition, they showed greater excitability than controls for paired-pulse facilitation evoked at the hippocampal CA3–CA1 synapse during experimentally induced hypoxia, thereby suggesting a compensatory switch to presynaptic mechanisms. Furthermore, GYS1Nestin-KO mice showed greater susceptibility to hippocampal seizures and myoclonus following the administration of kainate and/or a brief train stimulation of Schaffer collaterals. We conclude that brain glycogen could play a protective role both in hypoxic situations and in the prevention of brain seizures.
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Affiliation(s)
| | - Jordi Duran
- Institute for Research in Biomedicine (IRB Barcelona), The Barcelona Institute of Science and Technology Barcelona, Spain ; Centro de Investigación Biomédica en Red de Diabetes y Enfermedades Metabólicas Asociadas (CIBERDEM) Barcelona, Spain
| | - Agnès Gruart
- Division of Neurosciences, Pablo de Olavide University Seville, Spain
| | - Joan J Guinovart
- Institute for Research in Biomedicine (IRB Barcelona), The Barcelona Institute of Science and Technology Barcelona, Spain ; Centro de Investigación Biomédica en Red de Diabetes y Enfermedades Metabólicas Asociadas (CIBERDEM) Barcelona, Spain ; Department of Biochemistry and Molecular Biology, University of Barcelona Barcelona, Spain
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11
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A Special Extract of Bacopa monnieri (CDRI-08)-Restored Memory in CoCl2-Hypoxia Mimetic Mice Is Associated with Upregulation of Fmr-1 Gene Expression in Hippocampus. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2015; 2015:347978. [PMID: 26413121 PMCID: PMC4564622 DOI: 10.1155/2015/347978] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/29/2014] [Accepted: 04/01/2015] [Indexed: 11/18/2022]
Abstract
Fragile X mental retardation protein (FMRP) is a neuronal translational repressor and has been implicated in learning, memory, and cognition. However, the role of Bacopa monnieri extract (CDRI-08) in enhancing cognitive abilities in hypoxia-induced memory impairment via Fmr-1 gene expression is not known. Here, we have studied effects of CDRI-08 on the expression of Fmr-1 gene in the hippocampus of well validated cobalt chloride (CoCl2)-induced hypoxia mimetic mice and analyzed the data with alterations in spatial memory. Results obtained from Morris water maze test suggest that CoCl2 treatment causes severe loss of spatial memory and CDRI-08 is capable of reversing it towards that in the normal control mice. Our semiquantitative RT-PCR, Western blot, and immunofluorescence microscopic data reveal that CoCl2-induced hypoxia significantly upregulates the expression of Hif-1α and downregulates the Fmr-1 expression in the hippocampus, respectively. Further, CDRI-08 administration reverses the memory loss and this is correlated with significant downregulation of Hif-1α and upregulation of Fmr-1 expression. Our data are novel and may provide mechanisms of hypoxia-induced impairments in the spatial memory and action of CDRI-08 in the recovery of hypoxia led memory impairment involving Fmr-1 gene encoded protein called FMRP.
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12
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Childs E. Influence of energy drink ingredients on mood and cognitive performance. Nutr Rev 2015; 72 Suppl 1:48-59. [PMID: 25293543 DOI: 10.1111/nure.12148] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Sales of energy products have grown enormously in recent years. Manufacturers claim that the products, in the form of drinks, shots, supplements, and gels, enhance physical and cognitive performance, while users believe the products promote concentration, alertness, and fun. Most of these products contain caffeine, a mild psychostimulant, as their foremost active ingredient. However, they also contain additional ingredients, e.g., carbohydrates, amino acids, herbal extracts, vitamins, and minerals, often in unspecified amounts and labeled as an "energy blend." It is not clear whether these additional ingredients provide any physical or cognitive enhancement beyond that provided by caffeine alone. This article reviews the available empirical data on the interactive effects of these ingredients and caffeine on sleep and cognitive performance and suggests objectives for future study.
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Affiliation(s)
- Emma Childs
- The University of Chicago, Department of Psychiatry and Behavioral Neuroscience, Chicago, Illinois, USA
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13
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Lieberman HR, Thompson LA, Caruso CM, Niro PJ, Mahoney CR, McClung JP, Caron GR. The catecholamine neurotransmitter precursor tyrosine increases anger during exposure to severe psychological stress. Psychopharmacology (Berl) 2015; 232:943-51. [PMID: 25220844 PMCID: PMC4325185 DOI: 10.1007/s00213-014-3727-7] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/20/2013] [Accepted: 08/22/2014] [Indexed: 12/01/2022]
Abstract
RATIONALE Acute stress produces behavioral and physiological changes modulated by central catecholamines (CA). Stress increases CA activity, and depletion of CA stores reduces responses to stress. Increasing CA activity by administration of the dietary amino acid CA precursor tyrosine may increase responsiveness to stress. This study determined whether tyrosine enhances the ability of humans to respond to severe stress. METHODS Severe psychological stress was generated during training at Survival, Evasion, Resistance, and Escape (SERE) School. The acute stressor consisted of two mock interrogations conducted during several days of simulated captivity. Seventy-eight healthy male and female military personnel participated in this double-blind, between-subjects study, in which they received either tyrosine (300 mg/kg, N = 36) or placebo (N = 36). Tyrosine (or placebo) was administered in food bars in two doses of 150 mg/kg each approximately 60 min before each mock interrogation. Mood (Profile of Mood States), saliva cortisol, and heart rate (HR) were assessed prior to stress exposure during a week of academic training preceding mock captivity and immediately following the mock interrogations. RESULTS The severe stress produced robust effects on mood (i.e., increased tension, depression, anger, fatigue, vigor, and confusion; p < .001), cortisol, and HR (p < .001). Tyrosine increased anger (p = .002, ANOVA treatment condition by test session interaction) during stress but had no other effects. CONCLUSION Tyrosine did not alter most subjective or physiological responses to severe acute stress, but it increased ratings of anger. The modest increase in anger may be an adaptive emotional response in stressful environments.
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Affiliation(s)
- Harris R. Lieberman
- Military Nutrition Division, US Army Research Institute of Environmental Medicine, Kansas Street, Natick, MA 01760 USA
| | - Lauren A. Thompson
- Military Nutrition Division, US Army Research Institute of Environmental Medicine, Kansas Street, Natick, MA 01760 USA
| | - Christina M. Caruso
- Military Nutrition Division, US Army Research Institute of Environmental Medicine, Kansas Street, Natick, MA 01760 USA
| | - Philip J. Niro
- Military Nutrition Division, US Army Research Institute of Environmental Medicine, Kansas Street, Natick, MA 01760 USA
| | - Caroline R. Mahoney
- Cognitive Sciences, US Army Natick Soldier Research, Development, and Engineering Center, Kansas Street, Natick, MA 01760 USA
| | - James P. McClung
- Military Nutrition Division, US Army Research Institute of Environmental Medicine, Kansas Street, Natick, MA 01760 USA
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Baker LB, Nuccio RP, Jeukendrup AE. Acute effects of dietary constituents on motor skill and cognitive performance in athletes. Nutr Rev 2014; 72:790-802. [PMID: 25400063 DOI: 10.1111/nure.12157] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
Performance in many sports is at least partially dependent on motor control, coordination, decision-making, and other cognitive tasks. This review summarizes available evidence about the ingestion of selected nutrients or isolated compounds (dietary constituents) and potential acute effects on motor skill and/or cognitive performance in athletes. Dietary constituents discussed include branched-chain amino acids, caffeine, carbohydrate, cocoa flavanols, Gingko biloba, ginseng, guarana, Rhodiola rosea, sage, L-theanine, theobromine, and tyrosine. Although this is not an exhaustive list, these are perhaps the most researched dietary constituents. Caffeine and carbohydrate have the greatest number of published reports supporting their ability to enhance acute motor skill and cognitive performance in athletes. At this time, there is insufficient published evidence to substantiate the use of any other dietary constituents to benefit sports-related motor skill or cognitive performance. The optimal dose and timing of caffeine and carbohydrate intake promoting enhanced motor skill and cognitive performance remain to be identified. Valid, reliable, and sensitive batteries of motor skills and cognitive tests should be developed for use in future efficacy studies.
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Affiliation(s)
- Lindsay B Baker
- Gatorade Sports Science Institute, Barrington, Illinois, USA
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Deguil J, Ravasi L, Auffret A, Babiloni C, Bartres Faz D, Bragulat V, Cassé-Perrot C, Colavito V, Herrero Ezquerro MT, Lamberty Y, Lanteaume L, Pemberton D, Pifferi F, Richardson JC, Schenker E, Blin O, Tarragon E, Bordet R. Evaluation of symptomatic drug effects in Alzheimer's disease: strategies for prediction of efficacy in humans. DRUG DISCOVERY TODAY. TECHNOLOGIES 2014; 10:e329-42. [PMID: 24179995 DOI: 10.1016/j.ddtec.2013.03.003] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
In chronic diseases such as Alzheimer's disease (AD), the arsenal of biomarkers available to determine the effectiveness of symptomatic treatment is very limited. Interpretation of the results provided in literature is cumbersome and it becomes difficult to predict their standardization to a larger patient population. Indeed, cognitive assessment alone does not appear to have sufficient predictive value of drug efficacy in early clinical development of AD treatment. In recent years, research has contributed to the emergence of new tools to assess brain activity relying on innovative technologies of imaging and electrophysiology. However, the relevance of the use of these newer markers in treatment response assessment is waiting for validation. This review shows how the early clinical assessment of symptomatic drugs could benefit from the inclusion of suitable pharmacodynamic markers. This review also emphasizes the importance of re-evaluating a step-by-step strategy in drug development.
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Kishore K, Ray K, Anand J, Thakur L, Kumar S, Panjwani U. Tyrosine ameliorates heat induced delay in event related potential P300 and contingent negative variation. Brain Cogn 2013; 83:324-9. [DOI: 10.1016/j.bandc.2013.09.005] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2013] [Revised: 09/07/2013] [Accepted: 09/18/2013] [Indexed: 10/26/2022]
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Zhang G, Zhou SM, Yuan C, Tian HJ, Li P, Gao YQ. The Effects of Short-Term and Long-Term Exposure to a High Altitude Hypoxic Environment on Neurobehavioral Function. High Alt Med Biol 2013; 14:338-41. [DOI: 10.1089/ham.2012.1091] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- Gang Zhang
- Department of High Altitude Military Hygiene, College of High Altitude Military Medicine, Third Military Medical University, Chongqing, China
- Key Laboratory of High Altitude Medicine, 2Third Military Medical University, Ministry of Education, Chongqing, China
- PLA, Ministry of Education, Chongqing, China
| | - Si-Min Zhou
- Department of High Altitude Military Hygiene, College of High Altitude Military Medicine, Third Military Medical University, Chongqing, China
- Key Laboratory of High Altitude Medicine, 2Third Military Medical University, Ministry of Education, Chongqing, China
- PLA, Ministry of Education, Chongqing, China
| | - Chao Yuan
- Key Laboratory of High Altitude Medicine, 2Third Military Medical University, Ministry of Education, Chongqing, China
- PLA, Ministry of Education, Chongqing, China
- Department of Military Medical Geography, College of High Altitude Military Medicine, Third Military Medical University, Chongqing, China
| | - Huai-Jun Tian
- Department of High Altitude Military Hygiene, College of High Altitude Military Medicine, Third Military Medical University, Chongqing, China
- Key Laboratory of High Altitude Medicine, 2Third Military Medical University, Ministry of Education, Chongqing, China
- PLA, Ministry of Education, Chongqing, China
| | - Peng Li
- Department of High Altitude Military Hygiene, College of High Altitude Military Medicine, Third Military Medical University, Chongqing, China
- Key Laboratory of High Altitude Medicine, 2Third Military Medical University, Ministry of Education, Chongqing, China
- PLA, Ministry of Education, Chongqing, China
| | - Yu-Qi Gao
- Key Laboratory of High Altitude Medicine, 2Third Military Medical University, Ministry of Education, Chongqing, China
- PLA, Ministry of Education, Chongqing, China
- Department of Pathophysiology and High Altitude Physiology, College of High Altitude Military Medicine, Third Military Medical University, Chongqing, China
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Hypoxia/reoxygenation impairs memory formation via adenosine-dependent activation of caspase 1. J Neurosci 2013; 32:13945-55. [PMID: 23035103 DOI: 10.1523/jneurosci.0704-12.2012] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
After hypoxia, a critical adverse outcome is the inability to create new memories. How anterograde amnesia develops or resolves remains elusive, but a link to brain-based IL-1 is suggested due to the vital role of IL-1 in both learning and brain injury. We examined memory formation in mice exposed to acute hypoxia. After reoxygenation, memory recall recovered faster than memory formation, impacting novel object recognition and cued fear conditioning but not spatially cued Y-maze performance. The ability of mice to form new memories after hypoxia/reoxygenation was accelerated in IL-1 receptor 1 knockout (IL-1R1 KO) mice, in mice receiving IL-1 receptor antagonist (IL-1RA), and in mice given the caspase 1 inhibitor Ac-YVAD-CMK. Mechanistically, hypoxia/reoxygenation more than doubled caspase 1 activity in the brain, which was localized to the amygdala compared to the hippocampus. This reoxygenation-dependent activation of caspase 1 was prevented by broad-spectrum adenosine receptor (AR) antagonism with caffeine and by targeted A1/A2A AR antagonism with 8-cyclopentyl-1,3-dipropylxanthine plus 3,7-dimethyl-1-propargylxanthine. Additionally, perfusion of adenosine activated caspase 1 in the brain, while caffeine blocked this action by adenosine. Finally, resolution of anterograde amnesia was improved by both caffeine and by targeted A1/A2A AR antagonism. These findings indicate that amygdala-based anterograde amnesia after hypoxia/reoxygenation is sustained by IL-1β generated through adenosine-dependent activation of caspase 1 after reoxygenation.
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Udayabanu M, Kumaran D, Katyal A. Free chelatable zinc modulates the cholinergic function during hypobaric hypoxia-induced neuronal damage: an in vivo study. Neuroscience 2012; 202:434-45. [DOI: 10.1016/j.neuroscience.2011.11.022] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2011] [Revised: 11/08/2011] [Accepted: 11/08/2011] [Indexed: 10/15/2022]
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Querfurth HW, Lieberman P, Arms S, Mundell S, Bennett M, van Horne C. Ophthalmodynamometry for ICP prediction and pilot test on Mt. Everest. BMC Neurol 2010; 10:106. [PMID: 21040572 PMCID: PMC2987855 DOI: 10.1186/1471-2377-10-106] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2010] [Accepted: 11/01/2010] [Indexed: 01/22/2023] Open
Abstract
BACKGROUND A recent development in non-invasive techniques to predict intracranial pressure (ICP) termed venous ophthalmodynamometry (vODM) has made measurements in absolute units possible. However, there has been little progress to show utility in the clinic or field. One important application would be to predict changes in actual ICP during adaptive responses to physiologic stress such as hypoxia. A causal relationship between raised intracranial pressure and acute mountain sickness (AMS) is suspected. Several MRI studies report that modest physiologic increases in cerebral volume, from swelling, normally accompany subacute ascent to simulated high altitudes. OBJECTIVES 1) Validate and calibrate an advanced, portable vODM instrument on intensive patients with raised intracranial pressure and 2) make pilot, non-invasive ICP estimations of normal subjects at increasing altitudes. METHODS The vODM was calibrated against actual ICP in 12 neurosurgical patients, most affected with acute hydrocephalus and monitored using ventriculostomy/pressure transducers. The operator was blinded to the transducer read-out. A clinical field test was then conducted on a variable data set of 42 volunteer trekkers and climbers scaling Mt. Everest, Nepal. Mean ICPs were estimated at several altitudes on the ascent both across and within subjects. RESULTS Portable vODM measurements increased directly and linearly with ICP resulting in good predictability (r = 0.85). We also found that estimated ICP increases normally with altitude (10 ± 3 mm Hg; sea level to 20 ± 2 mm Hg; 6553 m) and that AMS symptoms did not correlate with raised ICP. CONCLUSION vODM technology has potential to reliably estimate absolute ICP and is portable. Physiologic increases in ICP and mild-mod AMS are separate responses to high altitude, possibly reflecting swelling and vasoactive instability, respectively.
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Affiliation(s)
- Henry W Querfurth
- Dept of Neurology, Rhode Island Hospital, Warren Alpert Medical School, Brown University Providence, RI 02903, USA.
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Udayabanu M, Kumaran D, Nair RU, Srinivas P, Bhagat N, Aneja R, Katyal A. Nitric oxide associated with iNOS expression inhibits acetylcholinesterase activity and induces memory impairment during acute hypobaric hypoxia. Brain Res 2008; 1230:138-49. [DOI: 10.1016/j.brainres.2008.06.081] [Citation(s) in RCA: 53] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2008] [Revised: 03/29/2008] [Accepted: 06/17/2008] [Indexed: 01/10/2023]
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O'Brien C, Mahoney C, Tharion WJ, Sils IV, Castellani JW. Dietary tyrosine benefits cognitive and psychomotor performance during body cooling. Physiol Behav 2007; 90:301-7. [PMID: 17078981 DOI: 10.1016/j.physbeh.2006.09.027] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2006] [Revised: 08/22/2006] [Accepted: 09/19/2006] [Indexed: 11/17/2022]
Abstract
Supplemental tyrosine is effective at limiting cold-induced decreases in working memory, presumably by augmenting brain catecholamine levels, since tyrosine is a precursor for catecholamine synthesis. The effectiveness of tyrosine for preventing cold-induced decreases in physical performance has not been examined. This study evaluated the effect of tyrosine supplementation on cognitive, psychomotor, and physical performance following a cold water immersion protocol that lowered body core temperature. Fifteen subjects completed a control trial (CON) in warm (35 degrees C) water and two cold water trials, each spaced a week apart. Subjects ingested an energy bar during each trial; on one cold trial (TYR) the bar contained tyrosine (300 mg/kg body weight), and on the other cold trial (PLB) and on CON the bar contained no tyrosine. Following each water immersion, subjects completed a battery of performance tasks in a cold air (10 degrees C) chamber. Core temperature was lower (p=0.0001) on PLB and TYR (both 35.5+/-0.6 degrees C) than CON (37.1+/-0.3 degrees C). On PLB, performance on a Match-to-Sample task decreased 18% (p=0.02) and marksmanship performance decreased 14% (p=0.002), compared to CON, but there was no difference between TYR and CON. Step test performance decreased by 11% (p=0.0001) on both cold trials, compared to CON. These data support previous findings that dietary tyrosine supplementation is effective for mitigating cold-induced cognitive performance such as working memory, even with reduced core temperature, and extends those findings to include the psychomotor task of marksmanship.
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Affiliation(s)
- Catherine O'Brien
- Thermal and Mountain Medicine Division, U.S. Army Research Institute of Environmental Medicine, Natick, MA 01760, USA
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Bekker A, Shah R, Quartermain D, Li YS, Blanck T. Isoflurane preserves spatial working memory in adult mice after moderate hypoxia. Anesth Analg 2006; 102:1134-8. [PMID: 16551911 DOI: 10.1213/01.ane.0000198637.36539.c1] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Perioperative hypoxia may contribute to postoperative cognitive impairment. It is unknown, however, whether anesthetics exacerbate or protect against hypoxia-related central nervous system impairment. We sought to determine whether hypoxia alone or in combination with isoflurane disrupts working memory in mice. To this extent, we assigned adult mice to one of four treatments for 1 h: oxygen 21%, oxygen 21% + isoflurane 1.2%, oxygen 8%, or oxygen 8% + isoflurane 1.2%. Mice breathed spontaneously throughout the experiment. Body temperature was maintained at 37 degrees C + 0.5 degrees C. Mice were allowed to recover for 24 h to avoid the confounding influence of residual anesthetics on neurobehavioral performance. Working memory was assessed by use of a Y maze modified for mice. For the training trial, entry to one arm was blocked and mice were permitted to run between the two open arms for 15 min and inspect the objects outside. For the test trial, carried out 1 h later, all arms were open. Time spent in each arm was automatically recorded by a camera and associated software. Mice were tested 1, 4, and 7 days after anesthesia. A different arm was used as the novel arm for each test. Performance was analyzed with repeated-measurements analysis of variance, followed by analysis of simple main effects and by post hoc comparison using Newman-Keuls test when appropriate. P values <0.05 were considered significant. Animals subjected to hypoxia (8% oxygen for 1 h) spent significantly less time in the novel arm 1 day after the insult. The impairment, however, was transient. Hypoxic mice performance improved to the level of the control animals on the fourth post-treatment day. Mice subjected to hypoxia plus isoflurane exhibited no impairment and were comparable to the control group at all time points. Hypoxia transiently impairs performance in a spatial memory task. It appears that isoflurane protects against this deleterious effect of hypoxia.
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Affiliation(s)
- Alex Bekker
- Department of Anesthesiology, New York University Medical Center, New York, New York, USA.
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Lieberman HR, Georgelis JH, Maher TJ, Yeghiayan SK. Tyrosine prevents effects of hyperthermia on behavior and increases norepinephrine. Physiol Behav 2004; 84:33-8. [PMID: 15642604 DOI: 10.1016/j.physbeh.2004.10.023] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2004] [Accepted: 10/13/2004] [Indexed: 11/19/2022]
Abstract
Tyrosine (TYR) is the precursor of the catecholamine (CA) neurotransmitters, dopamine (DA) and norepinephrine (NE). Catecholamines, especially NE, participate in the response of the brain to acute stress. When animals are acutely stressed, NE neurons become more active and tyrosine availability may be rate-limiting. Tyrosine administration, before exposure to physical and/or environmental stressors including cold, reduces the adverse behavioral, physiological and neurochemical consequences of the exposure. In this study, the effects of tyrosine (400 mg/kg) were examined on rats exposed to heat stress, for which its effects have not been examined. Coping behavior and memory were assessed using the Porsolt swim test and the Morris water maze. Release of hippocampal NE and DA was assessed with in vivo microdialysis. In vehicle-treated animals, heat impaired coping and memory, and increased release of NE, but not DA. In heated animals receiving tyrosine, coping was not impaired and NE release was sustained, thus demonstrating tyrosine protects against the adverse effects of heat, and suggesting these effects result from increased central NE release. This study indicates the effects of tyrosine generalize across dissimilar stressors and that tyrosine administration may mitigate the adverse behavioral effects of heat and other stressors on humans. In addition, it demonstrates that moderate heat stress impairs coping behavior, as well as working and reference memory.
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Affiliation(s)
- Harris R Lieberman
- Military Nutrition Division, United States Army Research Institute of Environmental Medicine, Building 42, Kansas Street, Natick, MA 01760-5007, USA.
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Aquilani R, Iadarola P, Boschi F, Pistarini C, Arcidiaco P, Contardi A. Reduced plasma levels of tyrosine, precursor of brain catecholamines, and of essential amino acids in patients with severe traumatic brain injury after rehabilitation11No commercial party having a direct financial interest in the results of the research supporting this article has or will confer a benefit upon the authors(s) or upon any organization with which the author(s) is/are associated. Arch Phys Med Rehabil 2003; 84:1258-65. [PMID: 13680559 DOI: 10.1016/s0003-9993(03)00148-5] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
OBJECTIVE To investigate whether levels of plasma tyrosine and tryptophan, precursors of brain catecholamine and serotonin neurotransmitters, respectively, and other essential amino acids (EAA) may return to normal in patients with severe traumatic brain injury (TBI) after 2 months in a hospital rehabilitation center. DESIGN Peripheral plasma concentrations of tyrosine, tryptophan, and other EAAs in subjects with severe TBI, both at admission (44+/-11d postinjury) and at discharge from the center (110+/-15d after acute event) were compared with concentrations in control subjects. SETTING Tertiary care rehabilitation setting in Italy. PARTICIPANTS Ten men (26.6+/-12.6y) with TBI and 6 healthy subjects (controls) matched for age, sex, voluntary loss of body weight, and sedentary lifestyle. INTERVENTIONS Not applicable. MAIN OUTCOME MEASURES Concentrations of brain neurotransmitter precursor amino acids and of EAA. RESULTS On admission, patients had lower plasma tyrosine, leucine, valine, methionine, and phenylalanine concentrations than did control subjects. The plasma concentrations of tryptophan were similar in the 2 groups. These amino acid abnormalities were still present at discharge. CONCLUSION The levels of plasma tyrosine and many EAA in patients with TBI did not recover by discharge (110+/-15d) from rehabilitation. Plasma tryptophan concentrations were similar in patients and controls.
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Affiliation(s)
- Roberto Aquilani
- Servizio di Fisiopatologia Metabolico-Nutrizionale e Nutrizione Clinica, Fondazione S. Maugeri, Istituto Scientifico di Montescano, Pavia, Italy
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Waters WF, Magill RA, Bray GA, Volaufova J, Smith SR, Lieberman HR, Rood J, Hurry M, Anderson T, Ryan DH. A comparison of tyrosine against placebo, phentermine, caffeine, and D-amphetamine during sleep deprivation. Nutr Neurosci 2003; 6:221-35. [PMID: 12887139 DOI: 10.1080/1028415031000120543] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
Sleep deprivation can impair alertness and cognitive and motor performance. We hypothesized that the amino acid tyrosine might reduce deleterious effects of sleep deprivation. Seventy-six healthy males, age 18-35 years, participated in a four-day protocol that included a habituation night, a baseline night, a 40.5 h period without sleep, and a recovery night. Tyrosine 150 mg/kg, caffeine 300 mg/70 kg, phentermine 37.5 mg, D-amphetamine 20 mg and placebo were administered in a double-blind, randomized fashion to compare their effects on the time it took to fall asleep, on endocrine responses during sleep deprivation, and on sleep quantity, quality and architecture as measured by polysomnography during recovery sleep. When given after 36 h without sleep, tyrosine had no significant effect on any parameter of sleep. D-amphetamine produced marked decrease in sleep drive but caused deleterious effects on many aspects of recovery sleep. Still, D-amphetamine was associated with increased alertness on the first recovery day. Phentermine and caffeine both decreased sleep drive during sleep deprivation, but phentermine impaired rapid-eye-movement (REM) recovery sleep. Tyrosine (when compared to placebo) had no effect on any sleep related measure, but it did stimulate prolactin release.
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Affiliation(s)
- William F Waters
- Pennington Biomedical Research Center, 6400 Perkins Road, Baton Rouge, LA 70808, USA
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Abstract
Military interest in the effects of nutritional factors on cognitive function has stimulated considerable research on a variety of food constituents. This paper will review the research on the amino acids tryptophan and tyrosine, caffeine and carbohydrate. It will focus on research that addresses the potential utility of these compounds in military applications, particularly the acute, as opposed to chronic, effects of these substances on cognitive functions such as alertness, vigilance and resistance to stress. Caffeine, the most intensively studied food constituent, has unequivocal beneficial effects on vigilance, and in sleep deprived individuals it enhances other cognitive functions as well. Tryptophan, although it clearly has sedative-like properties, has not been extensively studied by military laboratories for use as a hypnotic, due to safety concerns. Tyrosine has been examined in animal models and human studies, and appears to prevent the substantial decline in various aspects of cognitive performance and mood associated with many kinds of acute stress. Carbohydrate supplementation appears to enhance cognitive performance in soldiers engaged in sustained, intense physical activities that expend high levels of energy.
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Affiliation(s)
- Harris R Lieberman
- Military Nutrition Division, US Army Research Institute of Environmental Medicine (USARIEM), Natick, MA 01760-5007, USA.
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Yeghiayan SK, Luo S, Shukitt-Hale B, Lieberman HR. Tyrosine improves behavioral and neurochemical deficits caused by cold exposure. Physiol Behav 2001; 72:311-6. [PMID: 11274672 DOI: 10.1016/s0031-9384(00)00398-x] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
The effects of acute cold stress were assessed behaviorally and neurochemically. The norepinephrine (NE) precursor, tyrosine (TYR), the catecholamine-releasing compound, amphetamine (AMPH), and the adrenoceptor agonist, phenylpropanolamine (PPA), were administered systemically either alone or in conjunction with TYR 30 min prior to cold exposure. All three sympathomimetic treatments dose-dependently improved performance in a forced swim test following hypothermia (T(c)=30 degrees C). AMPH/TYR or PPA/TYR combinations further improved performance vs. either agent given alone. Microdialysis showed elevated hippocampal NE concentrations in response to hypothermia. TYR further elevated NE concentration in cold/restrained rats vs. saline (SAL)-treated controls. These results suggest that sympathomimetic agents, including the nutrient TYR, which enhance noradrenergic function, improve performance in animals acutely stressed by hypothermia.
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Affiliation(s)
- S K Yeghiayan
- Military Nutrition and Biochemistry Division, United States Army Research Institute of Environmental Medicine, Kansas Street, Natick, MA 01760-5007, USA.
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Thomas JR, Lockwood PA, Singh A, Deuster PA. Tyrosine improves working memory in a multitasking environment. Pharmacol Biochem Behav 1999; 64:495-500. [PMID: 10548261 DOI: 10.1016/s0091-3057(99)00094-5] [Citation(s) in RCA: 55] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Previous studies indicate that tyrosine may prove useful in promoting improved performance in situations in which performance is compromised by stress. To extend the generality of previous tyrosine findings, the present study examined the effects of tyrosine ingestion on performance during both a Multiple Task and a Simple Task battery. The multiple task battery was designed to measure working memory, arithmetic skills, and visual and auditory monitoring simultaneously, whereas the simple task battery measured only working memory and visual monitoring. Ten men and 10 women subjects underwent these batteries 1 h after ingesting 150 mg/kg of l-tyrosine or placebo. Administration of tyrosine significantly enhanced accuracy and decreased frequency of list retrieval on the working memory task during the multiple task battery compared with placebo. However, tyrosine induced no significant changes in performance on the arithmetic, visual, or auditory tasks during the Multiple Task, or modified any performance measures during the Simple Task battery. Blood levels of ACTH and cortisol were not, but heart rate and blood pressure were significantly increased during the performance tasks. The present results indicate that tyrosine may sustain working memory when competing requirements to perform other tasks simultaneously degrade performance, and that supplemental tyrosine may be appropriate for maintaining performance when mild to severe decrements are anticipated.
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Affiliation(s)
- J R Thomas
- Department of Military and Emergency Medicine, Uniformed Services University of the Health Sciences, Bethesda, MD 20814-4799, USA
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Klapdor K, Van Der Staay FJ. Repeated acquisition of a spatial navigation task in mice: effects of spacing of trials and of unilateral middle cerebral artery occlusion. Physiol Behav 1998; 63:903-9. [PMID: 9618015 DOI: 10.1016/s0031-9384(98)00003-1] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
The working memory version of the Morris water escape task, the repeated acquisition task, consists of trial pairs in which an animal is started twice from the same start position. Animals have mastered this task when they need less time to find the platform in the second of the two trials. In this study, study, male C57BL mice were trained on this task with massed, spaced, or spaced delay trials in which there was a 90-min delay between the first and second trials of a pair. The mice trained with spaced trials learned the repeated acquisition task, whereas the mice trained with massed or spaced delay trials were not consistently able to do so. When the mice had reached a stable baseline performance, the middle cerebral artery (MCA) was occluded or the mice were sham-operated. Then, the effects of the MCA occlusion (MCA-O) on the performance in the repeated acquisition tasks were studied. MCA occlusion hardly affected the performance in this task, irrespective of the spacing condition of the trials, although surgery per se seemed to have a transient disruptive effect.
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Affiliation(s)
- K Klapdor
- CNS Research, Bayer, Cologne, Germany
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Hamdi A, Brock JW, Payne S, Ross KD, Bond SP, Prasad C. Dietary Tyrosine Protects Striatal Dopamine Receptors from the Adverse Effects of REM Sleep Deprivation. Nutr Neurosci 1998; 1:119-31. [PMID: 27406017 DOI: 10.1080/1028415x.1998.11747221] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
L-Tyrosine is a non-essential amino acid that is produced as an intermediary metabolite in the conversion of phenylalanine to 3,4-dihyroxyphenylalanine (DOPA), and is a precursor of the neurotransmitter dopamine. In previous studies, tyrosine pretreatment was shown to protect against the neurochemical and behavioral deficits of acute stress caused by tail shock or cold exposure in rodents. The present study addressed the hypothesis that tyrosine administration may be an effective counter-measure to dopamine-mediated behaviors induced by rapid eye-movement sleep deprivation (RSD). In order to test the hypothesis, Sprague-Dawley rats were divided into 9 treatment groups: RSD-treated rats on normal-protein diet (20% casein: 1% tyrosine, 1% valine); tank control (TC) rats on a normal diet; cage control (CC) rats on normal diet; RSD-treated rats on 4% tyrosine diet; TC rats on 4% tyrosine diet; CC rats on 4% tyrosine diet; RSD-treated rats on 4% valine diet; TC rats on 4% valine diet; CC rats on 4% valine diet. In the RSD group receiving tyrosine, there was no apparent change in Bmax for binding of the dopamine D2 receptor ligand [(3)H]YM-09151-2 in the striata as compared to the respective TC and CC groups; whereas RSD-treated rats maintained on the normal diet and valine supplementation demonstrated expected increases in Bmax for ligand binding. The TC group on the tyrosine diet showed attenuated catalepsy compared to the corresponding CC group, while the RSD group consuming tyrosine showed a catalepsy that was significantly increased, and similar to that of cage control animais on a control diet. These data suggest that the tyrosine-supplemented diet significantly attenuated RSD-induced changes in striatal dopamine D2 receptors, and the effect appeared sufficient to influence RSD-induced behaviors.
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Affiliation(s)
- A Hamdi
- a Department of Pharmacology , King Saud University College of Medicine , Abha , Saudi Arabia
| | - J W Brock
- b Neurobehavioral Research Institute , Nashville , Tennessee 37211 , USA
| | - S Payne
- b Neurobehavioral Research Institute , Nashville , Tennessee 37211 , USA
| | - K D Ross
- b Neurobehavioral Research Institute , Nashville , Tennessee 37211 , USA
| | - S P Bond
- b Neurobehavioral Research Institute , Nashville , Tennessee 37211 , USA
| | - C Prasad
- c Section of Endocrinology, Department of Medicine , Louisiana State University Medical Center , New Orleans , Louisiana 70112 , USA
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