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Cunha AOS, de Deus JL, Ceballos CC, Leão RM. Increased hippocampal GABAergic inhibition after long-term high-intensity sound exposure. PLoS One 2019; 14:e0210451. [PMID: 31067215 PMCID: PMC6505933 DOI: 10.1371/journal.pone.0210451] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2018] [Accepted: 04/24/2019] [Indexed: 12/17/2022] Open
Abstract
Exposure to loud sounds is related to harmful mental and systemic effects. The hippocampal function can be affected to either high-intensity sound exposure or long-term sound deprivation. We previously showed that hippocampal long-term potentiation (LTP) is inhibited after ten days of daily exposure to 2 minutes of high-intensity noise (110 dB), in the hippocampi of Wistar rats. Here we investigated how the glutamatergic and GABAergic neurotransmission mediated by ionotropic receptors is affected by the same protocol of high-intensity sound exposure. We found that while the glutamatergic transmission both by AMPA/kainate and NMDA receptors in the Schaffer-CA1 synapses is unaffected by long-term exposure to high-intensity sound, the amplitude of the inhibitory GABAergic currents is potentiated, but not the frequency of both spontaneous and miniature currents. We conclude that after prolonged exposure to short periods of high-intensity sound, GABAergic transmission is potentiated in the hippocampal CA1 pyramidal neurons. This effect could be an essential factor for the reduced LTP in the hippocampi of these animals after high-intensity sound exposure. We conclude that prolonged exposure to high- intensity sound could affect hippocampal inhibitory transmission and consequently, its function.
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Affiliation(s)
| | - Junia L. de Deus
- Department of Physiology, FMRP, University of São Paulo, Ribeirão Preto, SP, Brazil
| | - Cesar C. Ceballos
- Department of Physiology, FMRP, University of São Paulo, Ribeirão Preto, SP, Brazil
| | - Ricardo M. Leão
- Department of Physiology, FMRP, University of São Paulo, Ribeirão Preto, SP, Brazil
- * E-mail:
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Hayes SH, Manohar S, Majumdar A, Allman BL, Salvi R. Noise-induced hearing loss alters hippocampal glucocorticoid receptor expression in rats. Hear Res 2019; 379:43-51. [PMID: 31071644 DOI: 10.1016/j.heares.2019.04.013] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/15/2019] [Revised: 03/25/2019] [Accepted: 04/24/2019] [Indexed: 12/11/2022]
Abstract
Although the effects of intense noise exposure on the peripheral and central auditory pathway have been well characterized, its effects on non-classical auditory structures in the brain, such as the hippocampus, are less well understood. Previously, we demonstrated that noise-induced hearing loss causes a significant long-term reduction in hippocampal neurogenesis and cell proliferation. Given the known suppressive effects of stress hormones on neurogenesis, the goal of the present study was to determine if activation of the stress response is an underlying mechanism for the long-term reduction in hippocampal neurogenesis observed following noise trauma. To accomplish this, we monitored basal and reactive blood plasma levels of the stress hormone corticosterone in rats for ten weeks following acoustic trauma, and quantified changes in hippocampal glucocorticoid and mineralocorticoid receptors. Our results indicate that long-term auditory deprivation does not cause a persistent increase in basal or reactive stress hormone levels in the weeks following noise exposure. Instead, we observed a greater decline in reactive corticosterone release in noise-exposed rats between the first and tenth week of sampling compared to control rats. We also observed a significant increase in hippocampal glucocorticoid receptor expression which may cause greater hippocampal sensitivity to circulating glucocorticoid levels and result in glucocorticoid-induced suppression of neurogenesis, as well as increased feedback inhibition on the HPA axis. No change in mineralocorticoid receptor expression was observed between control and noise exposed rats. These results highlight the adverse effect of intense noise exposure and auditory deprivation on the hippocampus.
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Affiliation(s)
- Sarah H Hayes
- Center for Hearing and Deafness, The State University of New York at Buffalo, Buffalo, NY, USA; Department of Anatomy and Cell Biology, Schulich School of Medicine and Dentistry, University of Western Ontario, Ontario, N6A 5C1, Canada.
| | - Senthilvelan Manohar
- Center for Hearing and Deafness, The State University of New York at Buffalo, Buffalo, NY, USA
| | - Antara Majumdar
- Center for Hearing and Deafness, The State University of New York at Buffalo, Buffalo, NY, USA
| | - Brian L Allman
- Center for Hearing and Deafness, The State University of New York at Buffalo, Buffalo, NY, USA; Department of Anatomy and Cell Biology, Schulich School of Medicine and Dentistry, University of Western Ontario, Ontario, N6A 5C1, Canada
| | - Richard Salvi
- Center for Hearing and Deafness, The State University of New York at Buffalo, Buffalo, NY, USA
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Attenuation of adverse effects of noise induced hearing loss on adult neurogenesis and memory in rats by intervention with Adenosine A2A receptor agonist. Brain Res Bull 2019; 147:47-57. [DOI: 10.1016/j.brainresbull.2019.02.006] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2018] [Revised: 01/21/2019] [Accepted: 02/07/2019] [Indexed: 01/11/2023]
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54
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Mogilever NB, Zuccarelli L, Burles F, Iaria G, Strapazzon G, Bessone L, Coffey EBJ. Expedition Cognition: A Review and Prospective of Subterranean Neuroscience With Spaceflight Applications. Front Hum Neurosci 2018; 12:407. [PMID: 30425628 PMCID: PMC6218582 DOI: 10.3389/fnhum.2018.00407] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2018] [Accepted: 09/21/2018] [Indexed: 01/10/2023] Open
Abstract
Renewed interest in human space exploration has highlighted the gaps in knowledge needed for successful long-duration missions outside low-Earth orbit. Although the technical challenges of such missions are being systematically overcome, many of the unknowns in predicting mission success depend on human behavior and performance, knowledge of which must be either obtained through space research or extrapolated from human experience on Earth. Particularly in human neuroscience, laboratory-based research efforts are not closely connected to real environments such as human space exploration. As caves share several of the physical and psychological challenges of spaceflight, underground expeditions have recently been developed as a spaceflight analog for astronaut training purposes, suggesting that they might also be suitable for studying aspects of behavior and cognition that cannot be fully examined under laboratory conditions. Our objective is to foster a bi-directional exchange between cognitive neuroscientists and expedition experts by (1) describing the cave environment as a worthy space analog for human research, (2) reviewing work conducted on human neuroscience and cognition within caves, (3) exploring the range of topics for which the unique environment may prove valuable as well as obstacles and limitations, (4) outlining technologies and methods appropriate for cave use, and (5) suggesting how researchers might establish contact with potential expedition collaborators. We believe that cave expeditions, as well as other sorts of expeditions, offer unique possibilities for cognitive neuroscience that will complement laboratory work and help to improve human performance and safety in operational environments, both on Earth and in space.
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Affiliation(s)
| | | | - Ford Burles
- Department of Psychology, Hotchkiss Brain Institute and Alberta Children's Hospital Research Institute, University of Calgary, Calgary, AB, Canada
| | - Giuseppe Iaria
- Department of Psychology, Hotchkiss Brain Institute and Alberta Children's Hospital Research Institute, University of Calgary, Calgary, AB, Canada
| | - Giacomo Strapazzon
- Institute of Mountain Emergency Medicine, Eurac Research - Institute of Mountain Emergency Medicine, Bolzano, Italy
| | - Loredana Bessone
- Directorate of Human and Robotics, Exploration, European Space Agency, Köln, Germany
| | - Emily B J Coffey
- Department of Psychology, Concordia University, Montreal, QC, Canada
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Chronic noise exposure exacerbates AD-like neuropathology in SAMP8 mice in relation to Wnt signaling in the PFC and hippocampus. Sci Rep 2018; 8:14622. [PMID: 30279527 PMCID: PMC6168589 DOI: 10.1038/s41598-018-32948-4] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2018] [Accepted: 09/17/2018] [Indexed: 12/25/2022] Open
Abstract
Non-genetic environmental hazards are thought to be associated with genetic susceptibility factors that increase Alzheimer’s disease (AD) pathogenesis. Aging and chronic noise exposure have been considered important factors in the AD. Here, we investigated the impact of chronic noise exposure on the AD-like neuropathology in the senescence-accelerated prone mouse (SAMP8) and the underlying mechanisms of such effects. We examined the consequences of AD-like neuropathology in 3-month-old SAMP8 mice using low- and high-intensity noise exposure and 8-month-old SAMP8 mice as aging positive controls. Immunoblotting and immunohistochemistry were conducted to examine AD-like pathological changes and potential mechanisms. Chronic noise exposure led to progressive overproduction of Aβ and increased the hyperphosphorylation of tau at Ser396, Thr205, and Thr231 sites in the hippocampus and the prefrontal cortex (PFC) in young SAMP8 mice, similar to that observed in aging SAMP8 mice. Both noise exposure and aging could cause a significant downregulation in Wnt signaling expression. These findings demonstrate that chronic noise stress exacerbated AD-like neuropathology, possibly by disrupting Wnt signaling and triggering aberrant tau hyperphosphorylation and Aβ in the PFC and hippocampus.
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56
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Low welfare impact of noise: assessment in an experimental model of mice infected by Herpes simplex-1. Appl Anim Behav Sci 2018. [DOI: 10.1016/j.applanim.2018.07.010] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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57
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The effect of industrial noise exposure on attention, reaction time, and memory. Int Arch Occup Environ Health 2018; 92:111-116. [DOI: 10.1007/s00420-018-1361-0] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2018] [Accepted: 09/18/2018] [Indexed: 01/12/2023]
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Dorado-Correa AM, Zollinger SA, Heidinger B, Brumm H. Timing matters: traffic noise accelerates telomere loss rate differently across developmental stages. Front Zool 2018; 15:29. [PMID: 30181761 PMCID: PMC6112141 DOI: 10.1186/s12983-018-0275-8] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2017] [Accepted: 07/16/2018] [Indexed: 01/29/2023] Open
Abstract
Background Noise pollution is one of the leading environmental health risks for humans, linked to a myriad of stress-related health problems. Yet little is known about the long-term effects of noise on the health and fitness of wildlife. We experimentally investigated the direct and cross-generational effects of traffic noise on telomeres; a measure of cellular ageing that is predictive of disease and longevity in humans and other organisms. We exposed zebra finches (Taenopygia guttata) to three different treatment groups: 1) parents were exposed to traffic noise before and during breeding, together with their nestling young, 2) fledged juveniles but not their parents were exposed to traffic noise, and 3) control group birds were never exposed to traffic noise. Results Although there was no significant effect of traffic noise exposure at early (pre-fledging) stages of offspring telomere length or loss rate, traffic noise exposure accelerated telomere loss in older (post-fledging) juveniles. Conclusions The age-dependent differences found in this study in telomere loss could occur if parents buffer younger offspring against the detrimental effects of noise exposure and/or if younger offspring are less sensitive to noise exposure. Telomere length during early life has been shown to be positively related to lifespan and the observed noise-induced increase of telomere attrition rate could reduce the fitness of the affected birds and potentially alter the population dynamics of birds in noise polluted areas. Our data highlight the need to consider the developmental stage of an organism to better understand the ecological consequences of anthropogenic change.
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Affiliation(s)
- A M Dorado-Correa
- 1Max Planck Institute for Ornithology, Eberhard-Gwinner-Str. 11, 82319 Seewiesen, Germany
| | - S A Zollinger
- 1Max Planck Institute for Ornithology, Eberhard-Gwinner-Str. 11, 82319 Seewiesen, Germany
| | - B Heidinger
- 2North Dakota State University, Stevens Hall 225, Dept 2715, PO Box 6050, Fargo, ND 58108-6050 USA
| | - H Brumm
- 1Max Planck Institute for Ornithology, Eberhard-Gwinner-Str. 11, 82319 Seewiesen, Germany
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Liu L, Xuan C, Shen P, He T, Chang Y, Shi L, Tao S, Yu Z, Brown RE, Wang J. Hippocampal Mechanisms Underlying Impairment in Spatial Learning Long After Establishment of Noise-Induced Hearing Loss in CBA Mice. Front Syst Neurosci 2018; 12:35. [PMID: 30087600 PMCID: PMC6066960 DOI: 10.3389/fnsys.2018.00035] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2018] [Accepted: 07/03/2018] [Indexed: 12/20/2022] Open
Abstract
Sensorineural hearing loss (SNHL) has been demonstrated in many clinical reports as a risk factor that promotes the development of cognitive impairment. However, the underlying neurological mechanisms are not clear. Noise exposure is one of the most common causes of SNHL. Although noise exposure causes relatively less damage to general health as compared with other methods for creating hearing loss (such as ototoxicity), it does impair cognitive function. Many studies have shown that the noise-induced cognitive impairment occur via the oxidative stress induced by the noise. In those studies, the effects of the noise-induced hearing loss induced (NIHL) were not addressed. Previously, we have demonstrated in the CBA/CaJ mouse model that oxidative stress was transient after a brief noise exposure, but the NIHL was permanent. In addition, NIHL was followed by a declined cognitive function and decreased hippocampal neurogenesis that were developed long after the oxidative stress disappeared. Therefore, NIHL can cause cognitive impairment independent of its stress effect and can serve as a model to investigate the relationship between hearing loss and the development of cognitive impairment. In the present study, we further demonstrated that the oxidative stress produced by the brief noise exposure did not damage the stem cell bank of hippocampus that was evaluated shortly after the noise exposure. In addition to the reduction in the rate of cell proliferation in hippocampus that was found previously, we found that the NIHL significantly reduced the promoting effect of learning activity on various stages of hippocampal neurogenesis, accompanied by the reduction in learning-induced expression of immediate early genes (IEGs) in hippocampus. Since the MWM-tested spatial function does not directly require auditory input, the results provide evidence for the maintenance role of auditory input on the cognitive function; the reduction of IEG expression that is required in memory-formation may be the initial step in blocking the effect of learning activity on neurogenesis in subjects with NIHL.
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Affiliation(s)
- Lijie Liu
- Department of Physiology, Medical College, Southeast University, Nanjing, China
| | - Chuanying Xuan
- Institute of Life Sciences, Southeast University, Nanjing, China
| | - Pei Shen
- Institute of Life Sciences, Southeast University, Nanjing, China
| | - Tingting He
- Institute of Life Sciences, Southeast University, Nanjing, China
| | - Ying Chang
- Institute of Life Sciences, Southeast University, Nanjing, China
| | - Lijuan Shi
- Department of Physiology, Medical College, Southeast University, Nanjing, China
| | - Shan Tao
- Department of Physiology, Medical College, Southeast University, Nanjing, China
| | - Zhiping Yu
- School of Communication Science and Disorders, Dalhousie University, Halifax, NS, Canada
| | - Richard E Brown
- Department of Psychology and Neuroscience, Dalhousie University, Halifax, NS, Canada
| | - Jian Wang
- Department of Physiology, Medical College, Southeast University, Nanjing, China.,School of Communication Science and Disorders, Dalhousie University, Halifax, NS, Canada
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60
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Cui B, Su D, Li W, She X, Zhang M, Wang R, Zhai Q. Effects of chronic noise exposure on the microbiome-gut-brain axis in senescence-accelerated prone mice: implications for Alzheimer's disease. J Neuroinflammation 2018; 15:190. [PMID: 29933742 PMCID: PMC6015475 DOI: 10.1186/s12974-018-1223-4] [Citation(s) in RCA: 71] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2018] [Accepted: 06/14/2018] [Indexed: 02/07/2023] Open
Abstract
Background Chronic noise exposure is associated with neuroinflammation and gut microbiota dysregulation and increases the risk of Alzheimer’s disease (AD). Environmental hazards are also thought to be associated with genetic susceptibility factors that increase AD pathogenesis. However, there is limited experimental evidence regarding the link between chronic noise stress and microbiome-gut-brain axis alterations, which may be closely related to AD development. Methods The aim of the present study was to systematically investigate the effects of chronic noise exposure on the microbiome-gut-brain axis in the senescence-accelerated mouse prone 8 (SAMP8) strain. We established SAMP8 mouse models to examine the consequences of noise exposure on the microbiome-gut-brain axis. Hippocampal amyloid-β (Aβ) assessment and the Morris water maze were used to evaluate AD-like changes, 16S ribosomal RNA sequencing analyses were used for intestinal flora measurements, and assessment of endothelial tight junctions and serum neurotransmitter and inflammatory mediator levels, as well as fecal microbiota transplant, was conducted to explore the underlying pathological mechanisms. Results Chronic noise exposure led to cognitive impairment and Aβ accumulation in young SAMP8 mice, similar to that observed in aging SAMP8 mice. Noise exposure was also associated with decreased gut microbiota diversity and compositional alterations. Axis-series studies showed that endothelial tight junction proteins were decreased in both the intestine and brain, whereas serum neurotransmitter and inflammatory mediator levels were elevated in young SAMP8 mice exposed to chronic noise, similar to the observations made in the aging group. The importance of intestinal bacteria in noise exposure-induced epithelial integrity impairment and Aβ accumulation was further confirmed through microbiota transplantation experiments. Moreover, the effects of chronic noise were generally intensity-dependent. Conclusion Chronic noise exposure altered the gut microbiota, accelerated age-related neurochemical and inflammatory dysregulation, and facilitated AD-like changes in the brain of SAMP8 mice. Electronic supplementary material The online version of this article (10.1186/s12974-018-1223-4) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Bo Cui
- Department of Operational Medicine, Tianjin Institute of Environmental and Operational Medicine, Tianjin, China.
| | - Donghong Su
- Department of Operational Medicine, Tianjin Institute of Environmental and Operational Medicine, Tianjin, China.,School of Medicine and Life Sciences, University of Jinan-Shandong Academy of Medical Sciences, Jinan, China.,Shandong Academy of Occupational Health and Occupational Medicine, Jinan, China
| | - Wenlong Li
- Department of Operational Medicine, Tianjin Institute of Environmental and Operational Medicine, Tianjin, China.,School of Public Health and Management, Weifang Medical University, Weifang, China
| | - Xiaojun She
- Department of Operational Medicine, Tianjin Institute of Environmental and Operational Medicine, Tianjin, China
| | - Ming Zhang
- Tianjin Centers for Disease Control and Prevention, Tianjin, China
| | - Rui Wang
- Shandong Academy of Occupational Health and Occupational Medicine, Jinan, China
| | - Qingfeng Zhai
- School of Public Health and Management, Weifang Medical University, Weifang, China
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61
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Cunha AOS, Ceballos CC, de Deus JL, Leão RM. Long-term high-intensity sound stimulation inhibits h current (I h ) in CA1 pyramidal neurons. Eur J Neurosci 2018; 47:1401-1413. [PMID: 29779233 DOI: 10.1111/ejn.13954] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2017] [Revised: 04/05/2018] [Accepted: 04/12/2018] [Indexed: 12/25/2022]
Abstract
Afferent neurotransmission to hippocampal pyramidal cells can lead to long-term changes to their intrinsic membrane properties and affect many ion currents. One of the most plastic neuronal currents is the hyperpolarization-activated cationic current (Ih ), which changes in CA1 pyramidal cells in response to many types of physiological and pathological processes, including auditory stimulation. Recently, we demonstrated that long-term potentiation (LTP) in rat hippocampal Schaffer-CA1 synapses is depressed by high-intensity sound stimulation. Here, we investigated whether a long-term high-intensity sound stimulation could affect intrinsic membrane properties of rat CA1 pyramidal neurons. Our results showed that Ih is depressed by long-term high-intensity sound exposure (1 min of 110 dB sound, applied two times per day for 10 days). This resulted in a decreased resting membrane potential, increased membrane input resistance and time constant, and decreased action potential threshold. In addition, CA1 pyramidal neurons from sound-exposed animals fired more action potentials than neurons from control animals; however, this effect was not caused by a decreased Ih . On the other hand, a single episode (1 min) of 110 dB sound stimulation which also inhibits hippocampal LTP did not affect Ih and firing in pyramidal neurons, suggesting that effects on Ih are long-term responses to high-intensity sound exposure. Our results show that prolonged exposure to high-intensity sound affects intrinsic membrane properties of hippocampal pyramidal neurons, mainly by decreasing the amplitude of Ih .
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Affiliation(s)
| | - Cesar Celis Ceballos
- Department of Physiology, FMRP, University of São Paulo, Ribeirão Preto, SP, Brazil.,Department of Physics, FFCLRP, University of São Paulo, Ribeirão Preto, SP, Brazil
| | - Junia Lara de Deus
- Department of Physiology, FMRP, University of São Paulo, Ribeirão Preto, SP, Brazil
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Neuroprotective effects of Tualang honey against oxidative stress and memory decline in young and aged rats exposed to noise stress. JOURNAL OF TAIBAH UNIVERSITY FOR SCIENCE 2018. [DOI: 10.1080/16583655.2018.1465275] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
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63
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Ruan Q, Yu Z, Zhang W, Ruan J, Liu C, Zhang R. Cholinergic Hypofunction in Presbycusis-Related Tinnitus With Cognitive Function Impairment: Emerging Hypotheses. Front Aging Neurosci 2018; 10:98. [PMID: 29681847 PMCID: PMC5897739 DOI: 10.3389/fnagi.2018.00098] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2017] [Accepted: 03/22/2018] [Indexed: 01/21/2023] Open
Abstract
Presbycusis (age-related hearing loss) is a potential risk factor for tinnitus and cognitive deterioration, which result in poor life quality. Presbycusis-related tinnitus with cognitive impairment is a common phenotype in the elderly population. In these individuals, the central auditory system shows similar pathophysiological alterations as those observed in Alzheimer's disease (AD), including cholinergic hypofunction, epileptiform-like network synchronization, chronic inflammation, and reduced GABAergic inhibition and neural plasticity. Observations from experimental rodent models indicate that recovery of cholinergic function can improve memory and other cognitive functions via acetylcholine-mediated GABAergic inhibition enhancement, nicotinic acetylcholine receptor (nAChR)-mediated anti-inflammation, glial activation inhibition and neurovascular protection. The loss of cholinergic innervation of various brain structures may provide a common link between tinnitus seen in presbycusis-related tinnitus and age-related cognitive impairment. We hypothesize a key component of the condition is the withdrawal of cholinergic input to a subtype of GABAergic inhibitory interneuron, neuropeptide Y (NPY) neurogliaform cells. Cholinergic denervation might not only cause the degeneration of NPY neurogliaform cells, but may also result in decreased AChR activation in GABAergic inhibitory interneurons. This, in turn, would lead to reduced GABA release and inhibitory regulation of neural networks. Reduced nAChR-mediated anti-inflammation due to the loss of nicotinic innervation might lead to the transformation of glial cells and release of inflammatory mediators, lowering the buffering of extracellular potassium and glutamate metabolism. Further research will provide evidence for the recovery of cholinergic function with the use of cholinergic input enhancement alone or in combination with other rehabilitative interventions to reestablish inhibitory regulation mechanisms of involved neural networks for presbycusis-related tinnitus with cognitive impairment.
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Affiliation(s)
- Qingwei Ruan
- Shanghai Institute of Geriatrics and Gerontology, Shanghai Key Laboratory of Clinical Geriatrics, Huadong Hospital, and Research Center of Aging and Medicine, Shanghai Medical College, Fudan University, Shanghai, China
| | - Zhuowei Yu
- Shanghai Institute of Geriatrics and Gerontology, Shanghai Key Laboratory of Clinical Geriatrics, Huadong Hospital, and Research Center of Aging and Medicine, Shanghai Medical College, Fudan University, Shanghai, China
| | - Weibin Zhang
- Shanghai Institute of Geriatrics and Gerontology, Shanghai Key Laboratory of Clinical Geriatrics, Huadong Hospital, and Research Center of Aging and Medicine, Shanghai Medical College, Fudan University, Shanghai, China
| | - Jian Ruan
- Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Chunhui Liu
- Department of Otolaryngology, Huadong Hospital, Shanghai Medical College, Fudan University, Shanghai, China
| | - Ruxin Zhang
- Department of Otolaryngology, Huadong Hospital, Shanghai Medical College, Fudan University, Shanghai, China
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Noise pollution limits metal bioaccumulation and growth rate in a filter feeder, the Pacific oyster Magallana gigas. PLoS One 2018; 13:e0194174. [PMID: 29617387 PMCID: PMC5884495 DOI: 10.1371/journal.pone.0194174] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2017] [Accepted: 02/26/2018] [Indexed: 01/26/2023] Open
Abstract
Shipping has increased dramatically in recent decades and oysters can hear them. We studied the interaction between noise pollution and trace metal contamination in the oyster Magallana gigas. Four oyster-groups were studied during a 14-day exposure period. Two were exposed to cadmium in the presence of cargo ship-noise ([Cd++]w ≈ 0.5 μg∙L-1; maximum sound pressure level 150 dBrms re 1 μPa), and 2 were exposed only to cadmium. The Cd concentration in the gills ([Cd]g) and the digestive gland ([Cd]dg), the valve closure duration, number of valve closures and circadian distribution of opening and closure, the daily shell growth-rate and the expression of 19 genes in the gills were studied. Oysters exposed to Cd in the presence of cargo ship-noise accumulated 2.5 times less Cd in their gills than did the controls without ship noise and their growth rate was 2.6 times slower. In the presence of ship noise, oysters were closed more during the daytime, and their daily valve activity was reduced. Changes in gene activity in the gills were observed in 7 genes when the Cd was associated with the ship noise. In the absence of ship noise, a change in expression was measured in 4 genes. We conclude that chronic exposure to cargo ship noise has a depressant effect on the activity in oysters, including on the volume of the water flowing over their gills (Vw). In turn, a decrease in the Vw and valve-opening duration limited metal exposure and uptake by the gills but also limited food uptake. This latter conclusion would explain the slowing observed in the fat metabolism and growth rate. Thus, we propose that cargo ship noise exposure could protect against metal bioaccumulation and affect the growth rate. This latter conclusion points towards a potential risk in terms of ecosystem productivity.
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Golbidi S, Li H, Laher I. Oxidative Stress: A Unifying Mechanism for Cell Damage Induced by Noise, (Water-Pipe) Smoking, and Emotional Stress-Therapeutic Strategies Targeting Redox Imbalance. Antioxid Redox Signal 2018; 28:741-759. [PMID: 29212347 DOI: 10.1089/ars.2017.7257] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
SIGNIFICANCE Modern technologies have eased our lives but these conveniences can impact our lifestyles in destructive ways. Noise pollution, mental stresses, and smoking (as a stress-relieving solution) are some environmental hazards that affect our well-being and healthcare budgets. Scrutinizing their pathophysiology could lead to solutions to reduce their harmful effects. Recent Advances: Oxidative stress plays an important role in initiating local and systemic inflammation after noise pollution, mental stress, and smoking. Lipid peroxidation and release of lysolipid by-products, disturbance in activation and function of nuclear factor erythroid 2-related factor 2 (Nrf2), induction of stress hormones and their secondary effects on intracellular kinases, and dysregulation of intracellular Ca2+ can all potentially trigger other vicious cycles. Recent clinical data suggest that boosting the antioxidant system through nonpharmacological measures, for example, lifestyle changes that include exercise have benefits that cannot easily be achieved with pharmacological interventions alone. CRITICAL ISSUES Indiscriminate manipulation of the cellular redox network could lead to a new series of ailments. An ideal approach requires meticulous scrutiny of redox balance mechanisms for individual pathologies so as to create new treatment strategies that target key pathways while minimizing side effects. FUTURE DIRECTIONS Extrapolating our understanding of redox balance to other debilitating conditions such as diabetes and the metabolic syndrome could potentially lead to devising a unifying therapeutic strategy. Antioxid. Redox Signal. 28, 741-759.
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Affiliation(s)
- Saeid Golbidi
- 1 Department of Pharmacology and Therapeutics, Faculty of Medicine, University of British Columbia , Vancouver, Canada
| | - Huige Li
- 2 Department of Pharmacology, Johannes Gutenberg University Medical Center , Mainz, Germany
| | - Ismail Laher
- 1 Department of Pharmacology and Therapeutics, Faculty of Medicine, University of British Columbia , Vancouver, Canada
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66
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Proverbio AM, De Benedetto F, Ferrari MV, Ferrarini G. When listening to rain sounds boosts arithmetic ability. PLoS One 2018; 13:e0192296. [PMID: 29466472 PMCID: PMC5821317 DOI: 10.1371/journal.pone.0192296] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2017] [Accepted: 01/10/2018] [Indexed: 01/25/2023] Open
Abstract
Studies in the literature have provided conflicting evidence about the effects of background noise or music on concurrent cognitive tasks. Some studies have shown a detrimental effect, while others have shown a beneficial effect of background auditory stimuli. The aim of this study was to investigate the influence of agitating, happy or touching music, as opposed to environmental sounds or silence, on the ability of non-musician subjects to perform arithmetic operations. Fifty university students (25 women and 25 men, 25 introverts and 25 extroverts) volunteered for the study. The participants were administered 180 easy or difficult arithmetic operations (division, multiplication, subtraction and addition) while listening to heavy rain sounds, silence or classical music. Silence was detrimental when participants were faced with difficult arithmetic operations, as it was associated with significantly worse accuracy and slower RTs than music or rain sound conditions. This finding suggests that the benefit of background stimulation was not music-specific but possibly due to an enhanced cerebral alertness level induced by the auditory stimulation. Introverts were always faster than extroverts in solving mathematical problems, except when the latter performed calculations accompanied by the sound of heavy rain, a condition that made them as fast as introverts. While the background auditory stimuli had no effect on the arithmetic ability of either group in the easy condition, it strongly affected extroverts in the difficult condition, with RTs being faster during agitating or joyful music as well as rain sounds, compared to the silent condition. For introverts, agitating music was associated with faster response times than the silent condition. This group difference may be explained on the basis of the notion that introverts have a generally higher arousal level compared to extroverts and would therefore benefit less from the background auditory stimuli.
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Affiliation(s)
- Alice Mado Proverbio
- Neuro-Mi Center for Neuroscience, Dept. of Psychology, University of Milano-Bicocca, Milan, Italy
- * E-mail:
| | - Francesco De Benedetto
- Neuro-Mi Center for Neuroscience, Dept. of Psychology, University of Milano-Bicocca, Milan, Italy
| | - Maria Vittoria Ferrari
- Neuro-Mi Center for Neuroscience, Dept. of Psychology, University of Milano-Bicocca, Milan, Italy
| | - Giorgia Ferrarini
- Neuro-Mi Center for Neuroscience, Dept. of Psychology, University of Milano-Bicocca, Milan, Italy
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67
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A single episode of high intensity sound inhibits long-term potentiation in the hippocampus of rats. Sci Rep 2017; 7:14094. [PMID: 29074877 PMCID: PMC5658367 DOI: 10.1038/s41598-017-14624-1] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2017] [Accepted: 10/11/2017] [Indexed: 02/03/2023] Open
Abstract
Exposure to loud sounds has become increasingly common. The most common consequences of loud sound exposure are deafness and tinnitus, but emotional and cognitive problems are also associated with loud sound exposure. Loud sounds can activate the hipothalamic-pituitary-adrenal axis resulting in the secretion of corticosterone, which affects hippocampal synaptic plasticity. Previously we have shown that long-term exposure to short episodes of high intensity sound inhibited hippocampal long-term potentiation (LTP) without affecting spatial learning and memory. Here we aimed to study the impact of short term loud sound exposure on hippocampal synaptic plasticity and function. We found that a single minute of 110 dB sound inhibits hippocampal Schaffer-CA1 LTP for 24 hours. This effect did not occur with an 80-dB sound exposure, was not correlated with corticosterone secretion and was also observed in the perforant-dentate gyrus synapse. We found that despite the deficit in the LTP these animals presented normal spatial learning and memory and fear conditioning. We conclude that a single episode of high-intensity sound impairs hippocampal LTP, without impairing memory and learning. Our results show that the hippocampus is very responsive to loud sounds which can have a potential, but not yet identified, impact on its function.
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68
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Yorzinski JL, Ordonez KA, Chema KT. Does artificial light pollution impair problem-solving success in peafowl? Ethology 2017. [DOI: 10.1111/eth.12658] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Jessica L. Yorzinski
- Department of Wildlife and Fisheries Sciences; Texas A&M University; College Station TX USA
| | - Kimberly A. Ordonez
- Department of Forestry and Natural Resources; Purdue University; West Lafayette IN USA
| | - Kailey T. Chema
- Department of Animal Sciences; Purdue University; West Lafayette IN USA
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69
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Casasole G, Raap T, Costantini D, AbdElgawad H, Asard H, Pinxten R, Eens M. Neither artificial light at night, anthropogenic noise nor distance from roads are associated with oxidative status of nestlings in an urban population of songbirds. Comp Biochem Physiol A Mol Integr Physiol 2017; 210:14-21. [DOI: 10.1016/j.cbpa.2017.05.003] [Citation(s) in RCA: 43] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2017] [Revised: 04/21/2017] [Accepted: 05/04/2017] [Indexed: 11/29/2022]
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70
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Frenzilli G, Ryskalin L, Ferrucci M, Cantafora E, Chelazzi S, Giorgi FS, Lenzi P, Scarcelli V, Frati A, Biagioni F, Gambardella S, Falleni A, Fornai F. Loud Noise Exposure Produces DNA, Neurotransmitter and Morphological Damage within Specific Brain Areas. Front Neuroanat 2017; 11:49. [PMID: 28694773 PMCID: PMC5483448 DOI: 10.3389/fnana.2017.00049] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2017] [Accepted: 06/06/2017] [Indexed: 12/11/2022] Open
Abstract
Exposure to loud noise is a major environmental threat to public health. Loud noise exposure, apart from affecting the inner ear, is deleterious for cardiovascular, endocrine and nervous systems and it is associated with neuropsychiatric disorders. In this study we investigated DNA, neurotransmitters and immune-histochemical alterations induced by exposure to loud noise in three major brain areas (cerebellum, hippocampus, striatum) of Wistar rats. Rats were exposed to loud noise (100 dBA) for 12 h. The effects of noise on DNA integrity in all three brain areas were evaluated by using Comet assay. In parallel studies, brain monoamine levels and morphology of nigrostriatal pathways, hippocampus and cerebellum were analyzed at different time intervals (24 h and 7 days) after noise exposure. Loud noise produced a sudden increase in DNA damage in all the brain areas under investigation. Monoamine levels detected at 7 days following exposure were differently affected depending on the specific brain area. Namely, striatal but not hippocampal dopamine (DA) significantly decreased, whereas hippocampal and cerebellar noradrenaline (NA) was significantly reduced. This is in line with pathological findings within striatum and hippocampus consisting of a decrease in striatal tyrosine hydroxylase (TH) combined with increased Bax and glial fibrillary acidic protein (GFAP). Loud noise exposure lasting 12 h causes immediate DNA, and long-lasting neurotransmitter and immune-histochemical alterations within specific brain areas of the rat. These alterations may suggest an anatomical and functional link to explain the neurobiology of diseases which prevail in human subjects exposed to environmental noise.
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Affiliation(s)
- Giada Frenzilli
- Department of Clinical and Experimental Medicine, University of PisaPisa, Italy
| | - Larisa Ryskalin
- Department of Translational Research and New Technologies in Medicine and Surgery, University of PisaPisa, Italy
| | - Michela Ferrucci
- Department of Translational Research and New Technologies in Medicine and Surgery, University of PisaPisa, Italy
| | - Emanuela Cantafora
- Department of Clinical and Experimental Medicine, University of PisaPisa, Italy
| | - Silvia Chelazzi
- Department of Clinical and Experimental Medicine, University of PisaPisa, Italy
| | - Filippo S Giorgi
- Department of Clinical and Experimental Medicine, University of PisaPisa, Italy
| | - Paola Lenzi
- Department of Translational Research and New Technologies in Medicine and Surgery, University of PisaPisa, Italy
| | - Vittoria Scarcelli
- Department of Clinical and Experimental Medicine, University of PisaPisa, Italy
| | - Alessandro Frati
- Istituto di Ricovero e Cura a Carattere Scientifico IRCCS NeuromedIsernia, Italy
| | - Francesca Biagioni
- Istituto di Ricovero e Cura a Carattere Scientifico IRCCS NeuromedIsernia, Italy
| | - Stefano Gambardella
- Istituto di Ricovero e Cura a Carattere Scientifico IRCCS NeuromedIsernia, Italy
| | - Alessandra Falleni
- Department of Clinical and Experimental Medicine, University of PisaPisa, Italy
| | - Francesco Fornai
- Department of Translational Research and New Technologies in Medicine and Surgery, University of PisaPisa, Italy.,Istituto di Ricovero e Cura a Carattere Scientifico IRCCS NeuromedIsernia, Italy
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71
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Long-Term Impairment of Sound Processing in the Auditory Midbrain by Daily Short-Term Exposure to Moderate Noise. Neural Plast 2017; 2017:3026749. [PMID: 28589040 PMCID: PMC5446865 DOI: 10.1155/2017/3026749] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2016] [Revised: 12/12/2016] [Accepted: 01/05/2017] [Indexed: 11/17/2022] Open
Abstract
Most citizen people are exposed daily to environmental noise at moderate levels with a short duration. The aim of the present study was to determine the effects of daily short-term exposure to moderate noise on sound level processing in the auditory midbrain. Sound processing properties of auditory midbrain neurons were recorded in anesthetized mice exposed to moderate noise (80 dB SPL, 2 h/d for 6 weeks) and were compared with those from age-matched controls. Neurons in exposed mice had a higher minimum threshold and maximum response intensity, a longer first spike latency, and a higher slope and narrower dynamic range for rate level function. However, these observed changes were greater in neurons with the best frequency within the noise exposure frequency range compared with those outside the frequency range. These sound processing properties also remained abnormal after a 12-week period of recovery in a quiet laboratory environment after completion of noise exposure. In conclusion, even daily short-term exposure to moderate noise can cause long-term impairment of sound level processing in a frequency-specific manner in auditory midbrain neurons.
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72
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Raap T, Pinxten R, Casasole G, Dehnhard N, Eens M. Ambient anthropogenic noise but not light is associated with the ecophysiology of free-living songbird nestlings. Sci Rep 2017; 7:2754. [PMID: 28584270 PMCID: PMC5459827 DOI: 10.1038/s41598-017-02940-5] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2016] [Accepted: 04/20/2017] [Indexed: 11/24/2022] Open
Abstract
Urbanization is associated with dramatic increases in noise and light pollution, which affect animal behaviour, physiology and fitness. However, few studies have examined these stressors simultaneously. Moreover, effects of urbanization during early-life may be detrimental but are largely unknown. In developing great tits (Parus major), a frequently-used model species, we determined important indicators of immunity and physiological condition: plasma haptoglobin (Hp) and nitric oxide (NOx) concentration. We also determined fledging mass, an indicator for current health and survival. Associations of ambient noise and light exposure with these indicators were studied. Anthropogenic noise, light and their interaction were unrelated to fledging mass. Nestlings exposed to more noise showed higher plasma levels of Hp but not of NOx. Light was unrelated to Hp and NOx and did not interact with the effect of noise on nestlings’ physiology. Increasing levels of Hp are potentially energy demanding and trade-offs could occur with life-history traits, such as survival. Effects of light pollution on nestlings of a cavity-nesting species appear to be limited. Nonetheless, our results suggest that the urban environment, through noise exposure, may entail important physiological costs for developing organisms.
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Affiliation(s)
- Thomas Raap
- Department of Biology, Behavioural Ecology and Ecophysiology Group, University of Antwerp, Wilrijk, Belgium.
| | - Rianne Pinxten
- Department of Biology, Behavioural Ecology and Ecophysiology Group, University of Antwerp, Wilrijk, Belgium.,Faculty of Social Sciences, Antwerp School of Education, University of Antwerp, Antwerp, Belgium
| | - Giulia Casasole
- Department of Biology, Behavioural Ecology and Ecophysiology Group, University of Antwerp, Wilrijk, Belgium
| | - Nina Dehnhard
- Department of Biology, Behavioural Ecology and Ecophysiology Group, University of Antwerp, Wilrijk, Belgium
| | - Marcel Eens
- Department of Biology, Behavioural Ecology and Ecophysiology Group, University of Antwerp, Wilrijk, Belgium
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73
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Tzivian L, Jokisch M, Winkler A, Weimar C, Hennig F, Sugiri D, Soppa VJ, Dragano N, Erbel R, Jöckel KH, Moebus S, Hoffmann B. Associations of long-term exposure to air pollution and road traffic noise with cognitive function-An analysis of effect measure modification. ENVIRONMENT INTERNATIONAL 2017; 103:30-38. [PMID: 28363096 DOI: 10.1016/j.envint.2017.03.018] [Citation(s) in RCA: 56] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2016] [Revised: 03/21/2017] [Accepted: 03/21/2017] [Indexed: 05/07/2023]
Abstract
BACKGROUND Adverse effects of traffic-related air pollution (AP) and noise on cognitive functions have been proposed, but little is known about their interactions and the combined effect of co-exposure. METHODS Cognitive assessment was completed by 4086 participants of the population-based Heinz Nixdorf Recall cohort study using five neuropsychological subtests and an additively calculated global cognitive score (GCS). We assessed long-term residential concentrations for size-fractioned particulate matter (PM) and nitrogen oxides with land use regression. Road traffic noise (weighted 24-h (LDEN) and night-time (LNIGHT) means) was assessed according to the EU directive 2002/49/EC. Linear regression models adjusted for individual-level characteristics were calculated to estimate effect modification of associations between AP and noise with cognitive function. We used multiplicative interaction terms and categories of single or double high exposure, dichotomizing the potential effect modifier at the median (AP) or at an a priori defined threshold (road traffic noise). RESULTS In fully adjusted models, high noise exposure increased the association of AP with cognitive function. For example, for an interquartile range increase of PM2.5 (IQR 1.43), association s with GCS were: estimate (β)=-0.16 [95% confidence interval: -0.33; 0.01] and β=-0.48 [-0.72; -0.23] for low and high LDEN, respectively. The association of noise with GCS was restricted to highly AP-exposed participants. We observed stronger negative associations in those participants with double exposure compared to the addition of effect estimates of each single exposure. CONCLUSIONS Our study suggests that AP and road traffic noise might act synergistically on cognitive function in adults.
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Affiliation(s)
- Lilian Tzivian
- Institute of Occupational, Social and Environmental Medicine, Centre for Health and Society, Medical Faculty, University of Düsseldorf, Düsseldorf, Germany; Faculty of Medicine, University of Latvia, Latvia.
| | - Martha Jokisch
- Department of Neurology, University Hospital of Essen, University of Duisburg-Essen, Essen, Germany
| | - Angela Winkler
- Department of Neurology, University Hospital of Essen, University of Duisburg-Essen, Essen, Germany
| | - Christian Weimar
- Department of Neurology, University Hospital of Essen, University of Duisburg-Essen, Essen, Germany
| | - Frauke Hennig
- Institute of Occupational, Social and Environmental Medicine, Centre for Health and Society, Medical Faculty, University of Düsseldorf, Düsseldorf, Germany
| | - Dorothea Sugiri
- IUF Leibniz Research Institute for Environmental Medicine, Düsseldorf, Germany
| | - Vanessa J Soppa
- Institute of Occupational, Social and Environmental Medicine, Centre for Health and Society, Medical Faculty, University of Düsseldorf, Düsseldorf, Germany
| | - Nico Dragano
- Institute of Medical Sociology, Centre for Health and Society, Medical Faculty, Heinrich-Heine-University Düsseldorf, Germany
| | - Raimund Erbel
- Institute for Medical Informatics, Biometry and Epidemiology, University Duisburg-Essen, Essen, Germany
| | - Karl-Heinz Jöckel
- Institute for Medical Informatics, Biometry and Epidemiology, University Duisburg-Essen, Essen, Germany
| | - Susanne Moebus
- Institute for Medical Informatics, Biometry and Epidemiology, University Duisburg-Essen, Essen, Germany
| | - Barbara Hoffmann
- Institute of Occupational, Social and Environmental Medicine, Centre for Health and Society, Medical Faculty, University of Düsseldorf, Düsseldorf, Germany
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74
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Wu X, Li D, Liu J, Diao L, Ling S, Li Y, Gao J, Fan Q, Sun W, Li Q, Zhao D, Zhong G, Cao D, Liu M, Wang J, Zhao S, Liu Y, Bai G, Shi H, Xu Z, Wang J, Xue C, Jin X, Yuan X, Li H, Liu C, Sun H, Li J, Li Y, Li Y. Dammarane Sapogenins Ameliorates Neurocognitive Functional Impairment Induced by Simulated Long-Duration Spaceflight. Front Pharmacol 2017; 8:315. [PMID: 28611667 PMCID: PMC5446991 DOI: 10.3389/fphar.2017.00315] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2017] [Accepted: 05/12/2017] [Indexed: 11/13/2022] Open
Abstract
Increasing evidence indicates the occurrence of cognitive impairment in astronauts under spaceflight compound conditions, but the underlying mechanisms and countermeasures need to be explored. In this study, we found that learning and memory abilities were significantly reduced in rats under a simulated long-duration spaceflight environment (SLSE), which includes microgravity, isolation confinement, noises, and altered circadian rhythms. Dammarane sapogenins (DS), alkaline hydrolyzed products of ginsenosides, can enhance cognition function by regulating brain neurotransmitter levels and inhibiting SLSE-induced neuronal injury. Bioinformatics combined with experimental verification identified that the PI3K-Akt-mTOR pathway was inhibited and the MAPK pathway was activated during SLSE-induced cognition dysfunction, whereas DS substantially ameliorated the changes in brain. These findings defined the characteristics of SLSE-induced cognitive decline and the mechanisms by which DS improves it. The results provide an effective candidate for improving cognitive function in spaceflight missions.
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Affiliation(s)
- Xiaorui Wu
- The Key Laboratory of Aerospace Medicine, Ministry of Education, The Fourth Military Medical UniversityXi'an, China.,State Key Laboratory of Space Medicine Fundamentals and Applications, China Astronaut Research and Training CenterBeijing, China
| | - Dong Li
- State Key Laboratory of Proteomics, Beijing Institute of Radiation Medicine, Beijing Proteome Research CenterBeijing, China
| | - Junlian Liu
- State Key Laboratory of Space Medicine Fundamentals and Applications, China Astronaut Research and Training CenterBeijing, China
| | - Lihong Diao
- State Key Laboratory of Proteomics, Beijing Institute of Radiation Medicine, Beijing Proteome Research CenterBeijing, China
| | - Shukuan Ling
- State Key Laboratory of Space Medicine Fundamentals and Applications, China Astronaut Research and Training CenterBeijing, China
| | - Yuheng Li
- State Key Laboratory of Space Medicine Fundamentals and Applications, China Astronaut Research and Training CenterBeijing, China
| | - Jianyi Gao
- State Key Laboratory of Space Medicine Fundamentals and Applications, China Astronaut Research and Training CenterBeijing, China
| | - Quanchun Fan
- State Key Laboratory of Space Medicine Fundamentals and Applications, China Astronaut Research and Training CenterBeijing, China
| | - Weijia Sun
- State Key Laboratory of Space Medicine Fundamentals and Applications, China Astronaut Research and Training CenterBeijing, China
| | - Qi Li
- State Key Laboratory of Space Medicine Fundamentals and Applications, China Astronaut Research and Training CenterBeijing, China
| | - Dingsheng Zhao
- State Key Laboratory of Space Medicine Fundamentals and Applications, China Astronaut Research and Training CenterBeijing, China
| | - Guohui Zhong
- State Key Laboratory of Space Medicine Fundamentals and Applications, China Astronaut Research and Training CenterBeijing, China
| | - Dengchao Cao
- State Key Laboratory of Space Medicine Fundamentals and Applications, China Astronaut Research and Training CenterBeijing, China
| | - Min Liu
- Department of Pharmacy, Beijing Shijitan Hospital, Capital Medical UniversityBeijing, China
| | - Jiaping Wang
- State Key Laboratory of Space Medicine Fundamentals and Applications, China Astronaut Research and Training CenterBeijing, China
| | - Shuang Zhao
- State Key Laboratory of Space Medicine Fundamentals and Applications, China Astronaut Research and Training CenterBeijing, China
| | - Yu Liu
- State Key Laboratory of Space Medicine Fundamentals and Applications, China Astronaut Research and Training CenterBeijing, China
| | - Guie Bai
- State Key Laboratory of Space Medicine Fundamentals and Applications, China Astronaut Research and Training CenterBeijing, China
| | - Hongzhi Shi
- State Key Laboratory of Space Medicine Fundamentals and Applications, China Astronaut Research and Training CenterBeijing, China
| | - Zi Xu
- State Key Laboratory of Space Medicine Fundamentals and Applications, China Astronaut Research and Training CenterBeijing, China
| | - Jing Wang
- State Key Laboratory of Space Medicine Fundamentals and Applications, China Astronaut Research and Training CenterBeijing, China
| | - Chunmei Xue
- State Key Laboratory of Space Medicine Fundamentals and Applications, China Astronaut Research and Training CenterBeijing, China
| | - Xiaoyan Jin
- State Key Laboratory of Space Medicine Fundamentals and Applications, China Astronaut Research and Training CenterBeijing, China
| | - Xinxin Yuan
- State Key Laboratory of Space Medicine Fundamentals and Applications, China Astronaut Research and Training CenterBeijing, China
| | - Hongxing Li
- State Key Laboratory of Space Medicine Fundamentals and Applications, China Astronaut Research and Training CenterBeijing, China
| | - Caizhi Liu
- State Key Laboratory of Space Medicine Fundamentals and Applications, China Astronaut Research and Training CenterBeijing, China
| | - Huiyuan Sun
- Xiyuan Hospital, China Academy of Chinese Medical SciencesBeijing, China
| | - Jianwei Li
- State Key Laboratory of Space Medicine Fundamentals and Applications, China Astronaut Research and Training CenterBeijing, China
| | - Yongzhi Li
- The Key Laboratory of Aerospace Medicine, Ministry of Education, The Fourth Military Medical UniversityXi'an, China.,State Key Laboratory of Space Medicine Fundamentals and Applications, China Astronaut Research and Training CenterBeijing, China
| | - Yingxian Li
- State Key Laboratory of Space Medicine Fundamentals and Applications, China Astronaut Research and Training CenterBeijing, China
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75
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Guo L, Li PH, Li H, Colicino E, Colicino S, Wen Y, Zhang R, Feng X, Barrow TM, Cayir A, Baccarelli AA, Byun HM. Effects of environmental noise exposure on DNA methylation in the brain and metabolic health. ENVIRONMENTAL RESEARCH 2017; 153:73-82. [PMID: 27914298 DOI: 10.1016/j.envres.2016.11.017] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/19/2016] [Revised: 11/22/2016] [Accepted: 11/23/2016] [Indexed: 05/17/2023]
Abstract
Environmental noise exposure is associated with adverse effects on human health including hearing loss, heart disease, and changes in stress-related hormone levels. Alteration in DNA methylation in response to environmental exposures is a well-known phenomenon and it is implicated in many human diseases. Understanding how environmental noise exposures affect DNA methylation patterns may help to elucidate the link between noise and adverse effects on health. In this pilot study we examined the effects of environmental noise exposure on DNA methylation of genes related to brain function and investigated whether these changes are related with metabolic health. We exposed four groups of male Wistar rats to moderate intensity noise (70-75dB with 20-4000Hz) at night for three days as short-term exposure, and for three weeks as long-term exposure. Noise exposure was limited to 45dB during the daytime. Control groups were exposed to only 45dB, day and night. We measured DNA methylation in the Bdnf, Comt, Crhr1, Mc2r, and Snca genes in tissue from four brain regions of the rats (hippocampus, frontal lobe, medulla oblongata, and inferior colliculus). Further, we measured blood pressure and body weight after long-term noise exposure. We found that environmental noise exposure is associated with gene-specific DNA methylation changes in specific regions of the brain. Changes in DNA methylation are significantly associated with changes in body weight (between Bdnf DNA methylation and Δ body weight: r=0.59, p=0.018; and between LINE-1 ORF DNA methylation and Δ body weight: =-0.80, p=0.0004). We also observed that noise exposure decreased blood pressure (p=0.038 for SBP, p=0.017 for DBP and p 0. 017 for MAP) and decreased body weight (β=-26g, p=0.008). In conclusion, environmental noise exposures can induce changes in DNA methylation in the brain, which may be associated with adverse effects upon metabolic health through modulation of response to stress-related hormones.
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Affiliation(s)
- Liqiong Guo
- Harvard T.H. Chan School of Public Health, Boston, MA 02115, USA.
| | - Peng-Hui Li
- School of Environmental Science and Safety Engineering, Tianjin University of Technology, Tianjin 300384, China
| | - Hua Li
- Department of Pharmacology, College of Pharmacy, Dalian Medical University, Dalian, Liaoning 116044, China
| | - Elena Colicino
- Harvard T.H. Chan School of Public Health, Boston, MA 02115, USA
| | - Silvia Colicino
- Respiratory Epidemiology, Occupational Medicine and Public Health, Imperial College, London, United Kingdom
| | - Yi Wen
- Department of Radiology, No. 531 Hospital of the PLA, Tonghua, Jilin 134000, China
| | - Ruiping Zhang
- Department of Radiology, No. 531 Hospital of the PLA, Tonghua, Jilin 134000, China
| | - Xiaotian Feng
- Department of Bioengineering, School of Mineral Processing and Bioengineering, Central South University, Changsha, Hunan 410083, China
| | - Timothy M Barrow
- Northern Institute for Cancer Research, Newcastle University, Newcastle upon Tyne NE2 4HH, United Kingdom
| | - Akin Cayir
- Harvard T.H. Chan School of Public Health, Boston, MA 02115, USA
| | | | - Hyang-Min Byun
- Harvard T.H. Chan School of Public Health, Boston, MA 02115, USA
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76
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Sikandaner HE, Park SY, Kim MJ, Park SN, Yang DW. Neuroprotective effects of sildenafil against oxidative stress and memory dysfunction in mice exposed to noise stress. Behav Brain Res 2016; 319:37-47. [PMID: 27836585 DOI: 10.1016/j.bbr.2016.10.046] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2016] [Revised: 10/27/2016] [Accepted: 10/28/2016] [Indexed: 12/13/2022]
Abstract
Noise exposure has been well characterized as an environmental stressor, and is known to have auditory and non-auditory effects. Phosphodiesterase 5 (PDE5) inhibitors affect memory and hippocampus plasticity through various signaling cascades which are regulated by cGMP. In this study, we investigated the effects of sildenafil on memory deficiency, neuroprotection and oxidative stress in mice caused by chronic noise exposure. Mice were exposed to noise for 4h every day up to 14days at 110dB SPL of noise level. Sildenafil (15mg/kg) was orally administered 30min before noise exposure for 14days. Behavioral assessments were performed using novel object recognition (NOR) test and radial arm maze (RAM) test. Higher levels of memory dysfunction and oxidative stress were observed in noise alone-induced mice compared to control group. Interestingly, sildenafil administration increased memory performance, decreased oxidative stress, and increased neuroprotection in the hippocampus region of noise alone-induced mice likely through affecting memory related pathways such as cGMP/PKG/CREB and p25/CDK5, and induction of free radical scavengers such as SOD1, SOD2, SOD3, Prdx5, and catalase in the brain of stressed mice.
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Affiliation(s)
- Hu Erxidan Sikandaner
- Department of Neurology, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - So Young Park
- Department of Neurology, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Min Jung Kim
- Department of Otorhinolaryngology-Head and Neck Surgery, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Shi Nae Park
- Department of Otorhinolaryngology-Head and Neck Surgery, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea.
| | - Dong Won Yang
- Department of Neurology, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea.
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77
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Liu L, Wang F, Lu H, Cao S, Du Z, Wang Y, Feng X, Gao Y, Zha M, Guo M, Sun Z, Wang J. Effects of Noise Exposure on Systemic and Tissue-Level Markers of Glucose Homeostasis and Insulin Resistance in Male Mice. ENVIRONMENTAL HEALTH PERSPECTIVES 2016; 124:1390-1398. [PMID: 27128844 PMCID: PMC5010391 DOI: 10.1289/ehp162] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/09/2015] [Revised: 01/24/2016] [Accepted: 04/12/2016] [Indexed: 06/05/2023]
Abstract
BACKGROUND Epidemiological studies have indicated that noise exposure is associated with an increased risk of type 2 diabetes mellitus (T2DM). However, the nature of the connection between noise exposure and T2DM remains to be explored. OBJECTIVES We explored whether and how noise exposure affects glucose homeostasis in mice as the initial step toward T2DM development. METHODS Male ICR mice were randomly assigned to one of four groups: the control group and three noise groups (N20D, N10D, and N1D), in which the animals were exposed to white noise at 95 decibel sound pressure level (dB SPL) for 4 hr per day for 20 successive days, 10 successive days, or 1 day, respectively. Glucose tolerance and insulin sensitivity were evaluated 1 day, 1 week, and 1 month after the final noise exposure (1DPN, 1WPN, and 1MPN). Standard immunoblots, immunohistochemical methods, and enzyme-linked immunosorbent assays (ELISA) were performed to assess insulin signaling in skeletal muscle, the morphology of β cells, and plasma corticosterone levels. RESULTS Noise exposure for 1 day caused transient glucose intolerance and insulin resistance, whereas noise exposure for 10 and 20 days had no effect on glucose tolerance but did cause prolonged insulin resistance and an increased insulin response to glucose challenge. Akt phosphorylation and GLUT4 translocation in response to exogenous insulin were decreased in the skeletal muscle of noise-exposed animals. CONCLUSIONS Noise exposure at 95 dB SPL caused insulin resistance in male ICR mice, which was prolonged with longer noise exposure and was likely related to the observed blunted insulin signaling in skeletal muscle. CITATION Liu L, Wang F, Lu H, Cao S, Du Z, Wang Y, Feng X, Gao Y, Zha M, Guo M, Sun Z, Wang J. 2016. Effects of noise exposure on systemic and tissue-level markers of glucose homeostasis and insulin resistance in male mice. Environ Health Perspect 124:1390-1398; http://dx.doi.org/10.1289/EHP162.
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Affiliation(s)
- Lijie Liu
- Department of Physiology, Medical College, Southeast University, Nanjing, China
| | - Fanfan Wang
- Institute of Life Sciences, Southeast University, Nanjing, China
| | - Haiying Lu
- Institute of Life Sciences, Southeast University, Nanjing, China
| | - Shuangfeng Cao
- Institute of Life Sciences, Southeast University, Nanjing, China
| | - Ziwei Du
- Medical College, Southeast University, Nanjing, China
| | - Yongfang Wang
- Medical College, Southeast University, Nanjing, China
| | - Xian Feng
- Medical College, Southeast University, Nanjing, China
| | - Ye Gao
- Medical College, Southeast University, Nanjing, China
| | - Mingming Zha
- Medical College, Southeast University, Nanjing, China
| | - Min Guo
- Medical College, Southeast University, Nanjing, China
| | - Zilin Sun
- Department of Endocrinology, Medical College, Affiliated ZhongDa Hospital of Southeast University, Nanjing, China
| | - Jian Wang
- Department of Physiology, Medical College, Southeast University, Nanjing, China
- School of Human Communication Disorders, Dalhousie University, Halifax, Nova Scotia, Canada
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78
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Tualang Honey Attenuates Noise Stress-Induced Memory Deficits in Aged Rats. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2016; 2016:1549158. [PMID: 27119005 PMCID: PMC4826941 DOI: 10.1155/2016/1549158] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/12/2016] [Accepted: 03/13/2016] [Indexed: 12/24/2022]
Abstract
Ageing and stress exposure may lead to memory impairment while oxidative stress is thought to be one of the underlying mechanisms involved. This study aimed to investigate the potential protective effects of Tualang honey supplementation on memory performance in aged rats exposed to noise stress. Tualang honey supplementation was given orally, 200 mg/kg body weight for 28 days. Rats in the stress group were subjected to loud noise, 100 dB(A), 4 hours daily for 14 days. All rats were subjected to novel object recognition test for evaluation of memory performance. It was observed that the rats subjected to noise stress exhibited significantly lower memory performance and higher oxidative stress as evident by elevated malondialdehyde and protein carbonyl levels and reduction of antioxidant enzymes activities compared to the nonstressed rats. Tualang honey supplementation was able to improve memory performance, decrease oxidative stress levels, increase brain-derived neurotrophic factor (BDNF) concentration, decrease acetylcholinesterase activity, and enhance neuronal proliferation in the medial prefrontal cortex (mPFC) and hippocampus. In conclusion, Tualang honey protects against memory decline due to stress exposure and/or ageing via enhancement of mPFC and hippocampal morphology possibly secondary to reduction in brain oxidative stress and/or upregulation of BDNF concentration and cholinergic system.
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79
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The hippocampus may be more susceptible to environmental noise than the auditory cortex. Hear Res 2016; 333:93-97. [DOI: 10.1016/j.heares.2016.01.001] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/02/2015] [Revised: 12/23/2015] [Accepted: 01/04/2016] [Indexed: 11/21/2022]
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80
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Liu L, Shen P, He T, Chang Y, Shi L, Tao S, Li X, Xun Q, Guo X, Yu Z, Wang J. Noise induced hearing loss impairs spatial learning/memory and hippocampal neurogenesis in mice. Sci Rep 2016; 6:20374. [PMID: 26842803 PMCID: PMC4740884 DOI: 10.1038/srep20374] [Citation(s) in RCA: 76] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2015] [Accepted: 12/23/2015] [Indexed: 12/11/2022] Open
Abstract
Hearing loss has been associated with cognitive decline in the elderly and is considered to be an independent risk factor for dementia. One of the most common causes for acquired sensorineural hearing loss is exposure to excessive noise, which has been found to impair learning ability and cognitive performance in human subjects and animal models. Noise exposure has also been found to depress neurogenesis in the hippocampus. However, the effect is mainly attributed to the oxidant stress of noise on the cognitive brain. In the present study, young adult CBA/CAJ mice (between 1.5 and 2 months of age) were briefly exposed a high sound level to produce moderate-to-severe hearing loss. In both the blood and hippocampus, only transient oxidative stress was observed after noise exposure. However, a deficit in spatial learning/memory was revealed 3 months after noise exposure. Moreover, the deficit was correlated with the degree of hearing loss and was associated with a decrease in neurogenesis in the hippocampus. We believe that the observed effects were likely due to hearing loss rather than the initial oxidant stress, which only lasted for a short period of time.
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Affiliation(s)
- Lijie Liu
- Department of Physiology, Medical College of Southeast University, Nanjing China
| | - Pei Shen
- Department of Physiology, Medical College of Southeast University, Nanjing China
| | - Tingting He
- Department of Physiology, Medical College of Southeast University, Nanjing China
| | - Ying Chang
- Department of Physiology, Medical College of Southeast University, Nanjing China
| | - Lijuan Shi
- Department of Physiology, Medical College of Southeast University, Nanjing China
| | - Shan Tao
- Department of Physiology, Medical College of Southeast University, Nanjing China
| | - Xiaowei Li
- Department of Physiology, Medical College of Southeast University, Nanjing China
| | - Qingying Xun
- Department of Physiology, Medical College of Southeast University, Nanjing China
| | - Xiaojing Guo
- Department of Physiology, Medical College of Southeast University, Nanjing China.,Children's medical center, the Second Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Zhiping Yu
- School of Human Communication Disorders, Dalhousie University, Halifax, Canada
| | - Jian Wang
- Department of Physiology, Medical College of Southeast University, Nanjing China.,School of Human Communication Disorders, Dalhousie University, Halifax, Canada
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81
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Noise exposure of immature rats can induce different age-dependent extra-auditory alterations that can be partially restored by rearing animals in an enriched environment. Brain Res 2016; 1636:52-61. [PMID: 26851548 DOI: 10.1016/j.brainres.2016.01.050] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2015] [Revised: 12/29/2015] [Accepted: 01/27/2016] [Indexed: 02/01/2023]
Abstract
It has been previously shown that different extra-auditory alterations can be induced in animals exposed to noise at 15 days. However, data regarding exposure of younger animals, that do not have a functional auditory system, have not been obtained yet. Besides, the possibility to find a helpful strategy to restore these changes has not been explored so far. Therefore, the aims of the present work were to test age-related differences in diverse hippocampal-dependent behavioral measurements that might be affected in noise-exposed rats, as well as to evaluate the effectiveness of a potential neuroprotective strategy, the enriched environment (EE), on noise-induced behavioral alterations. Male Wistar rats of 7 and 15 days were exposed to moderate levels of noise for two hours. At weaning, animals were separated and reared either in standard or in EE cages for one week. At 28 days of age, different hippocampal-dependent behavioral assessments were performed. Results show that rats exposed to noise at 7 and 15 days were differentially affected. Moreover, EE was effective in restoring all altered variables when animals were exposed at 7 days, while a few were restored in rats exposed at 15 days. The present findings suggest that noise exposure was capable to trigger significant hippocampal-related behavioral alterations that were differentially affected, depending on the age of exposure. In addition, it could be proposed that hearing structures did not seem to be necessarily involved in the generation of noise-induced hippocampal-related behaviors, as they were observed even in animals with an immature auditory pathway. Finally, it could be hypothesized that the differential restoration achieved by EE rearing might also depend on the degree of maturation at the time of exposure and the variable evaluated, being younger animals more susceptible to environmental manipulations.
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82
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Abstract
Cup-shaped secretory portals at the cell plasma membrane called porosomes mediate the precision release of intravesicular material from cells. Membrane-bound secretory vesicles transiently dock and fuse at the base of porosomes facing the cytosol to expel pressurized intravesicular contents from the cell during secretion. The structure, isolation, composition, and functional reconstitution of the neuronal porosome complex have greatly progressed, providing a molecular understanding of its function in health and disease. Neuronal porosomes are 15 nm cup-shaped lipoprotein structures composed of nearly 40 proteins, compared to the 120 nm nuclear pore complex composed of >500 protein molecules. Membrane proteins compose the porosome complex, making it practically impossible to solve its atomic structure. However, atomic force microscopy and small-angle X-ray solution scattering studies have provided three-dimensional structural details of the native neuronal porosome at sub-nanometer resolution, providing insights into the molecular mechanism of its function. The participation of several porosome proteins previously implicated in neurotransmission and neurological disorders, further attest to the crosstalk between porosome proteins and their coordinated involvement in release of neurotransmitter at the synapse.
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Affiliation(s)
- Akshata R Naik
- Department of Physiology, Wayne State University School of Medicine, Detroit, MI 48201, USA
| | - Kenneth T Lewis
- Department of Physiology, Wayne State University School of Medicine, Detroit, MI 48201, USA
| | - Bhanu P Jena
- Department of Physiology, Wayne State University School of Medicine, Detroit, MI 48201, USA
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83
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Borkum JM. Migraine Triggers and Oxidative Stress: A Narrative Review and Synthesis. Headache 2015; 56:12-35. [PMID: 26639834 DOI: 10.1111/head.12725] [Citation(s) in RCA: 151] [Impact Index Per Article: 16.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/03/2015] [Indexed: 01/01/2023]
Abstract
BACKGROUND Blau theorized that migraine triggers are exposures that in higher amounts would damage the brain. The recent discovery that the TRPA1 ion channel transduces oxidative stress and triggers neurogenic inflammation suggests that oxidative stress may be the common denominator underlying migraine triggers. OBJECTIVE The aim of this review is to present and discuss the available literature on the capacity of common migraine triggers to generate oxidative stress in the brain. METHODS A Medline search was conducted crossing the terms "oxidative stress" and "brain" with "alcohol," "dehydration," "water deprivation," "monosodium glutamate," "aspartame," "tyramine," "phenylethylamine," "dietary nitrates," "nitrosamines," "noise," "weather," "air pollutants," "hypoglycemia," "hypoxia," "infection," "estrogen," "circadian," "sleep deprivation," "information processing," "psychosocial stress," or "nitroglycerin and tolerance." "Flavonoids" was crossed with "prooxidant." The reference lists of the resulting articles were examined for further relevant studies. The focus was on empirical studies, in vitro and of animals, of individual triggers, indicating whether and/or by what mechanism they can generate oxidative stress. RESULTS In all cases except pericranial pain, common migraine triggers are capable of generating oxidative stress. Depending on the trigger, mechanisms include a high rate of energy production by the mitochondria, toxicity or altered membrane properties of the mitochondria, calcium overload and excitotoxicity, neuroinflammation and activation of microglia, and activation of neuronal nicotinamide adenine dinucleotide phosphate (NADPH) oxidase. For some triggers, oxidants also arise as a byproduct of monoamine oxidase or cytochrome P450 processing, or from uncoupling of nitric oxide synthase. CONCLUSIONS Oxidative stress is a plausible unifying principle behind the types of migraine triggers encountered in clinical practice. The possible implications for prevention and for understanding the nature of the migraine attack are discussed.
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Affiliation(s)
- Jonathan M Borkum
- Department of Psychology, University of Maine, Orono, ME, USA.,Health Psych Maine, Waterville, ME, USA
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84
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Molina SJ, Miceli M, Guelman LR. Noise exposure and oxidative balance in auditory and extra-auditory structures in adult and developing animals. Pharmacological approaches aimed to minimize its effects. Pharmacol Res 2015; 109:86-91. [PMID: 26657417 DOI: 10.1016/j.phrs.2015.11.022] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/18/2015] [Revised: 11/23/2015] [Accepted: 11/25/2015] [Indexed: 10/22/2022]
Abstract
Noise coming from urban traffic, household appliances or discotheques might be as hazardous to the health of exposed people as occupational noise, because may likewise cause hearing loss, changes in hormonal, cardiovascular and immune systems and behavioral alterations. Besides, noise can affect sleep, work performance and productivity as well as communication skills. Moreover, exposure to noise can trigger an oxidative imbalance between reactive oxygen species (ROS) and the activity of antioxidant enzymes in different structures, which can contribute to tissue damage. In this review we systematized the information from reports concerning noise effects on cell oxidative balance in different tissues, focusing on auditory and non-auditory structures. We paid specific attention to in vivo studies, including results obtained in adult and developing subjects. Finally, we discussed the pharmacological strategies tested by different authors aimed to minimize the damaging effects of noise on living beings.
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Affiliation(s)
- S J Molina
- Cátedra de Farmacología, Facultad de Medicina, UBA and Centro de Estudios Farmacológicos y Botánicos, UBA-CEFYBO-CONICET, Buenos Aires, Argentina
| | - M Miceli
- Cátedra de Farmacología, Facultad de Medicina, UBA and Centro de Estudios Farmacológicos y Botánicos, UBA-CEFYBO-CONICET, Buenos Aires, Argentina
| | - L R Guelman
- Cátedra de Farmacología, Facultad de Medicina, UBA and Centro de Estudios Farmacológicos y Botánicos, UBA-CEFYBO-CONICET, Buenos Aires, Argentina.
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85
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Cunha AOS, de Oliveira JAC, Almeida SS, Garcia-Cairasco N, Leão RM. Inhibition of long-term potentiation in the schaffer-CA1 pathway by repetitive high-intensity sound stimulation. Neuroscience 2015; 310:114-27. [PMID: 26391920 DOI: 10.1016/j.neuroscience.2015.09.040] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2015] [Revised: 09/01/2015] [Accepted: 09/14/2015] [Indexed: 10/23/2022]
Abstract
High-intensity sound can induce seizures in susceptible animals. After repeated acoustic stimuli changes in behavioural seizure repertoire and epileptic EEG activity might be seen in recruited limbic and forebrain structures, a phenomenon known as audiogenic kindling. It is postulated that audiogenic kindling can produce synaptic plasticity events leading to the spread of epileptogenic activity to the limbic system. In order to test this hypothesis, we investigated if long-term potentiation (LTP) of hippocampal Schaffer-CA1 synapses and spatial navigation memory are altered by a repeated high-intensity sound stimulation (HISS) protocol, consisting of one-minute 120 dB broadband noise applied twice a day for 10 days, in normal Wistar rats and in audiogenic seizure-prone rats (Wistar Audiogenic Rats - WARs). After HISS all WARs exhibited midbrain seizures and 50% of these animals developed limbic recruitment, while only 26% of Wistar rats presented midbrain seizures and none of them had limbic recruitment. In naïve animals, LTP in hippocampal CA1 neurons was induced by 50- or 100-Hz high-frequency stimulation of Schaffer fibres in slices from both Wistar and WAR animals similarly. Surprisingly, HISS suppressed LTP in CA1 neurons in slices from Wistar rats that did not present any seizure, and inhibited LTP in slices from Wistar rats with only midbrain seizures. However HISS had no effect on LTP in CA1 neurons from slices of WARs. Interestingly HISS did not alter spatial navigation and memory in both strains. These findings show that repeated high-intensity sound stimulation prevent LTP of Schaffer-CA1 synapses from Wistar rats, without affecting spatial memory. This effect was not seen in hippocampi from audiogenic seizure-prone WARs. In WARs the link between auditory stimulation and hippocampal LTP seems to be disrupted which could be relevant for the susceptibility to seizures in this strain.
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Affiliation(s)
- A O S Cunha
- Department of Physiology, FMRP, University of São Paulo, Ribeirão Preto-SP, Brazil
| | - J A C de Oliveira
- Department of Physiology, FMRP, University of São Paulo, Ribeirão Preto-SP, Brazil
| | - S S Almeida
- Departament of Psychology, FFCLRP, University of São Paulo, Ribeirão Preto-SP, Brazil
| | - N Garcia-Cairasco
- Department of Physiology, FMRP, University of São Paulo, Ribeirão Preto-SP, Brazil.
| | - R M Leão
- Department of Physiology, FMRP, University of São Paulo, Ribeirão Preto-SP, Brazil.
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86
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Wang S, Yu Y, Feng Y, Zou F, Zhang X, Huang J, Zhang Y, Zheng X, Huang XF, Zhu Y, Liu Y. Protective effect of the orientin on noise-induced cognitive impairments in mice. Behav Brain Res 2015; 296:290-300. [PMID: 26392065 DOI: 10.1016/j.bbr.2015.09.024] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2015] [Revised: 09/14/2015] [Accepted: 09/16/2015] [Indexed: 01/10/2023]
Abstract
There is increasing evidence that chronic noise stress impairs cognition and induces oxidative stress in the brain. Recently, orientin, a phenolic compound abundant in some fruits, millet, and herbs, has been shown to have antioxidant properties. This study investigated the potential effects of orientin against chronic noise-induced cognitive decline and its underlying mechanisms. A moderate-intensity noise exposure model was used to investigate the effects of orientin on behavior and biochemical alterations in mice. After 3 weeks of the noise exposure, the mice were treated with orientin (20mg/kg and 40 mg/kg, oral gavage) for 3 weeks. The chronic noise exposure impaired the learning and memory in mice in the Morris water maze and step-through tests. The noise exposure also decreased exploration and interest in a novel environment in the open field test. The administration of orientin significantly reversed noise-induced alterations in these behavior tests. Moreover, the orientin treatment significantly improved the noise-induced alteration of serum corticosterone and catecholamine levels and oxidative stress in the hippocampus and prefrontal cortex. Furthermore, the orientin treatment ameliorated the noise-induced decrease in brain-derived neurotrophic factor and synapse-associated proteins (synaptophysin and postsynaptic density protein 95) in the hippocampus and prefrontal cortex. Thus, orientin exerts protective effects on noise-induced cognitive decline in mice, specifically by improving central oxidative stress, neurotransmission, and increases synapse-associated proteins. Therefore, supplementation with orientin-enriched food or fruit could be beneficial as a preventive strategy for chronic noise-induced cognitive decline.
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Affiliation(s)
- Shuting Wang
- Jiangsu Key Laboratory of New Drug Research and Clinical Pharmacy, School of Pharmacy, Xuzhou Medical College, Xuzhou, Jiangsu Province, China
| | - Yinghua Yu
- Schizophrenia Research Institute (SRI), 405 Liverpool St., Sydney, NSW 2010, Australia; Illawarra Health and Medical Research Institute, School of Medicine, University of Wollongong, NSW 2522, Australia
| | - Yan Feng
- Jiangsu Key Laboratory of New Drug Research and Clinical Pharmacy, School of Pharmacy, Xuzhou Medical College, Xuzhou, Jiangsu Province, China
| | - Fang Zou
- Jiangsu Key Laboratory of New Drug Research and Clinical Pharmacy, School of Pharmacy, Xuzhou Medical College, Xuzhou, Jiangsu Province, China
| | - Xiaofei Zhang
- Jiangsu Key Laboratory of New Drug Research and Clinical Pharmacy, School of Pharmacy, Xuzhou Medical College, Xuzhou, Jiangsu Province, China
| | - Jie Huang
- Jiangsu Key Laboratory of New Drug Research and Clinical Pharmacy, School of Pharmacy, Xuzhou Medical College, Xuzhou, Jiangsu Province, China
| | - Yuyun Zhang
- Jiangsu Key Laboratory of New Drug Research and Clinical Pharmacy, School of Pharmacy, Xuzhou Medical College, Xuzhou, Jiangsu Province, China
| | - Xian Zheng
- Jiangsu Key Laboratory of New Drug Research and Clinical Pharmacy, School of Pharmacy, Xuzhou Medical College, Xuzhou, Jiangsu Province, China
| | - Xu-Feng Huang
- Schizophrenia Research Institute (SRI), 405 Liverpool St., Sydney, NSW 2010, Australia; Illawarra Health and Medical Research Institute, School of Medicine, University of Wollongong, NSW 2522, Australia
| | - Yufu Zhu
- Department of Neurosurgery, Affiliated Hospital of Xuzhou Medical College, Xuzhou, Jiangsu Province, China.
| | - Yi Liu
- Jiangsu Key Laboratory of New Drug Research and Clinical Pharmacy, School of Pharmacy, Xuzhou Medical College, Xuzhou, Jiangsu Province, China.
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87
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Xu Y, Cheng X, Cui X, Wang T, Liu G, Yang R, Wang J, Bo X, Wang S, Zhou W, Zhang Y. Effects of 5-h multimodal stress on the molecules and pathways involved in dendritic morphology and cognitive function. Neurobiol Learn Mem 2015; 123:225-38. [DOI: 10.1016/j.nlm.2015.06.011] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2015] [Revised: 06/17/2015] [Accepted: 06/23/2015] [Indexed: 11/25/2022]
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88
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Tao S, Liu L, Shi L, Li X, Shen P, Xun Q, Guo X, Yu Z, Wang J. Spatial learning and memory deficits in young adult mice exposed to a brief intense noise at postnatal age. J Otol 2015; 10:21-28. [PMID: 29937778 PMCID: PMC6002560 DOI: 10.1016/j.joto.2015.07.001] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2015] [Accepted: 07/14/2015] [Indexed: 02/07/2023] Open
Abstract
Noise pollution is a major hazardous factor to human health and is likely harmful for vulnerable groups such as pre-term infants under life-support system in an intensive care unit. Previous studies have suggested that noise exposure impairs children's learning ability and cognitive performance and cognitive functions in animal models in which the effect is mainly attributed to the oxidant stress of noise on the cognitive brain. The potential role of noise induced hearing loss (NIHL), rather than the oxidant stress, has also been indicated by a depression of neurogenesis in the hippocampus long after a brief noise exposure, which produces only a tentative oxidant stress. It is not clear if noise exposure and NIHL during early development exerts a long term impact on cognitive function and neurogenesis towards adulthood. In the present study, a brief noise exposure at high sound level was performed in neonatal C57BL/6J mice (15 days after birth) to produce a significant amount of permanent hearing loss as proved 2 months after the noise. At this age, the noise-exposed animals showed deteriorated spatial learning and memory abilities and a reduction of hippocampal neurogenesis as compared with the control. The averaged hearing threshold was found to be strongly correlated with the scores for spatial learning and memory. We consider the effects observed are largely due to the loss of hearing sensitivity, rather than the oxidant stress, due to the long interval between noise exposure and the observations.
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Affiliation(s)
- Shan Tao
- Department of Physiology, Medical College of Southeast University, Nanjing, China
| | - Lijie Liu
- Department of Physiology, Medical College of Southeast University, Nanjing, China
| | - Lijuan Shi
- Department of Physiology, Medical College of Southeast University, Nanjing, China
| | - Xiaowei Li
- Department of Physiology, Medical College of Southeast University, Nanjing, China
| | - Pei Shen
- Department of Physiology, Medical College of Southeast University, Nanjing, China
| | - Qingying Xun
- Department of Physiology, Medical College of Southeast University, Nanjing, China
| | - Xiaojing Guo
- Department of Physiology, Medical College of Southeast University, Nanjing, China.,Children's Medical Center, the Second Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Zhiping Yu
- School of Human Communication Disorders, Dalhousie University, Halifax, Canada
| | - Jian Wang
- Department of Physiology, Medical College of Southeast University, Nanjing, China.,School of Human Communication Disorders, Dalhousie University, Halifax, Canada
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89
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Cui B, Li K, Gai Z, She X, Zhang N, Xu C, Chen X, An G, Ma Q, Wang R. Chronic Noise Exposure Acts Cumulatively to Exacerbate Alzheimer's Disease-Like Amyloid-β Pathology and Neuroinflammation in the Rat Hippocampus. Sci Rep 2015; 5:12943. [PMID: 26251361 PMCID: PMC4528219 DOI: 10.1038/srep12943] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2015] [Accepted: 07/10/2015] [Indexed: 11/27/2022] Open
Abstract
A putative etiological association exists between noise exposure and Alzheimer’s disease (AD). Amyloid-β (Aβ) pathology is thought to be one of the primary initiating factors in AD. It has been further suggested that subsequent dysregulation of Aβ may play a mechanistic role in the AD-like pathophysiology associated with noise exposure. Here, we used ELISA, immunoblotting, cytokine arrays, and RT-PCR, to examine both hippocampal Aβ pathology and neuroinflammation in rats at different time points after noise exposure. We found that chronic noise exposure significantly accelerated the progressive overproduction of Aβ, which persisted for 7 to 14 days after the cessation of exposure. This effect was accompanied by up-regulated expression of amyloid precursor protein (APP) and its cleavage enzymes, β- and γ-secretases. Cytokine analysis revealed that chronic noise exposure increased levels of tumor necrosis factor-α and the receptor for advanced glycation end products, while decreasing the expression of activin A and platelet-derived growth factor- AA. Furthermore, we found persistent elevations of glial fibrillary acidic protein and ionized calcium-binding adapter molecule 1 expression that closely corresponded to the noise-induced increases in Aβ and neuroinflammation. These studies suggest that lifelong environmental noise exposure may have cumulative effects on the onset and development of AD.
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Affiliation(s)
- Bo Cui
- Department of Occupational Hygiene, Tianjin Institute of Health and Environmental Medicine, Tianjin, China
| | - Kang Li
- Department of Occupational Hygiene, Tianjin Institute of Health and Environmental Medicine, Tianjin, China
| | - Zhihui Gai
- 1] Department of Occupational Hygiene, Tianjin Institute of Health and Environmental Medicine, Tianjin, China [2] Shandong academy of occupational health and occupational medicine, Shandong academy of medical sciences, Jinan, China
| | - Xiaojun She
- Department of Occupational Hygiene, Tianjin Institute of Health and Environmental Medicine, Tianjin, China
| | - Na Zhang
- Department of Occupational Hygiene, Tianjin Institute of Health and Environmental Medicine, Tianjin, China
| | - Chuanxiang Xu
- Department of Occupational Hygiene, Tianjin Institute of Health and Environmental Medicine, Tianjin, China
| | - Xuewei Chen
- Department of Occupational Hygiene, Tianjin Institute of Health and Environmental Medicine, Tianjin, China
| | - Gaihong An
- Department of Occupational Hygiene, Tianjin Institute of Health and Environmental Medicine, Tianjin, China
| | - Qiang Ma
- Department of Occupational Hygiene, Tianjin Institute of Health and Environmental Medicine, Tianjin, China
| | - Rui Wang
- Shandong academy of occupational health and occupational medicine, Shandong academy of medical sciences, Jinan, China
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90
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Swaddle JP, Francis CD, Barber JR, Cooper CB, Kyba CCM, Dominoni DM, Shannon G, Aschehoug E, Goodwin SE, Kawahara AY, Luther D, Spoelstra K, Voss M, Longcore T. A framework to assess evolutionary responses to anthropogenic light and sound. Trends Ecol Evol 2015; 30:550-60. [PMID: 26169593 DOI: 10.1016/j.tree.2015.06.009] [Citation(s) in RCA: 163] [Impact Index Per Article: 18.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2015] [Revised: 06/11/2015] [Accepted: 06/16/2015] [Indexed: 10/24/2022]
Abstract
Human activities have caused a near-ubiquitous and evolutionarily-unprecedented increase in environmental sound levels and artificial night lighting. These stimuli reorganize communities by interfering with species-specific perception of time-cues, habitat features, and auditory and visual signals. Rapid evolutionary changes could occur in response to light and noise, given their magnitude, geographical extent, and degree to which they represent unprecedented environmental conditions. We present a framework for investigating anthropogenic light and noise as agents of selection, and as drivers of other evolutionary processes, to influence a range of behavioral and physiological traits such as phenological characters and sensory and signaling systems. In this context, opportunities abound for understanding contemporary and rapid evolution in response to human-caused environmental change.
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Affiliation(s)
| | | | | | - Caren B Cooper
- North Carolina Museum of Natural Sciences, Raleigh, NC, USA
| | - Christopher C M Kyba
- Deutsches GeoForschungsZentrum GFZ and Leibniz-Institute of Freshwater Ecology and Inland Fisheries, Potsdam, Germany
| | | | | | | | | | | | | | | | | | - Travis Longcore
- University of Southern California and The Urban Wildlands Group, Los Angeles, CA, USA.
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91
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Zhvania MG, Bikashvili TZ, Japaridze NJ, Lazrishvili II, Ksovreli M. White noise and neuronal porosome complex: transmission electron microscopic study. Discoveries (Craiova) 2014; 2:e25. [PMID: 32309553 PMCID: PMC6941563 DOI: 10.15190/d.2014.17] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
In the present electron microscopic study the effect of continuous white noise on the morphology of synapses and neuronal porosome complex (the neurotransmitter-release or secretory machinery) in two subcortical auditory brain regions - colliculus inferior and medial geniculate body in cat, were investigated. Several morphological alterations in some synapses were detected in both subcortical areas. These alterations mainly indicate to the decrease of functional activity of synapses. Rarely important pathological modifications in pre- and post-synaptic regions were detected. In addition to descriptive studies, the morphometric analysis of porosome diameter and depth was performed in colliculus inferior and medial geniculate body. The results revealed that while white noise has no effect on the porosome diameter and depth in colliculus inferior, it provokes significant alterations in the morphology of porosome complex in medial geniculate body. In particular, the significant increase of porosome depth in this nucleus may reflect the alteration in neurotransmission.
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Affiliation(s)
- Mzia G Zhvania
- Institute of Chemical Biology, Ilia State University, 3/5 K. Cholokashvili Avenue, 0162 Tbilisi, Georgia.,I. Beritashvili Center of Experimental Biomedicine, 14 Gotua Street, 0160 Tbilisi, Georgia
| | - Tamar Z Bikashvili
- I. Beritashvili Center of Experimental Biomedicine, 14 Gotua Street, 0160 Tbilisi, Georgia
| | - Nadezhda J Japaridze
- I. Beritashvili Center of Experimental Biomedicine, 14 Gotua Street, 0160 Tbilisi, Georgia.,New Vision University, 1a, Mikeladze Street, 0159 Tbilisi, Georgia
| | - Ilia I Lazrishvili
- I. Beritashvili Center of Experimental Biomedicine, 14 Gotua Street, 0160 Tbilisi, Georgia
| | - Mariam Ksovreli
- Institute of Chemical Biology, Ilia State University, 3/5 K. Cholokashvili Avenue, 0162 Tbilisi, Georgia
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92
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Chuang S, Lei S, Xuejun J, Shiming Y, Ke L. Effects of Moderate Noise Exposure on Hearing Function in C57BL/6J Mice. J Otol 2014. [DOI: 10.1016/s1672-2930(14)50019-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022] Open
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93
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Role of NMDA receptors in noise-induced tau hyperphosphorylation in rat hippocampus and prefrontal cortex. J Neurol Sci 2014; 340:191-7. [DOI: 10.1016/j.jns.2014.03.027] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2013] [Revised: 02/22/2014] [Accepted: 03/13/2014] [Indexed: 11/23/2022]
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94
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Chaudhury S, Nag TC, Jain S, Wadhwa S. Role of sound stimulation in reprogramming brain connectivity. J Biosci 2014; 38:605-14. [PMID: 23938392 DOI: 10.1007/s12038-013-9341-8] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Sensory stimulation has a critical role to play in the development of an individual. Environmental factors tend to modify the inputs received by the sensory pathway. The developing brain is most vulnerable to these alterations and interacts with the environment to modify its neural circuitry. In addition to other sensory stimuli, auditory stimulation can also act as external stimuli to provide enrichment during the perinatal period. There is evidence that suggests that enriched environment in the form of auditory stimulation can play a substantial role in modulating plasticity during the prenatal period. This review focuses on the emerging role of prenatal auditory stimulation in the development of higher brain functions such as learning and memory in birds and mammals. The molecular mechanisms of various changes in the hippocampus following sound stimulation to effect neurogenesis, learning and memory are described. Sound stimulation can also modify neural connectivity in the early postnatal life to enhance higher cognitive function or even repair the secondary damages in various neurological and psychiatric disorders. Thus, it becomes imperative to examine in detail the possible ameliorating effects of prenatal sound stimulation in existing animal models of various psychiatric disorders, such as autism.
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Affiliation(s)
- Sraboni Chaudhury
- Department of Anatomy, All India Institute of Medical Sciences, New Delhi, India.
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95
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Cheng L, Wang SH, Jia N, Xie M, Liao XM. Environmental stimulation influence the cognition of developing mice by inducing changes in oxidative and apoptosis status. Brain Dev 2014; 36:51-6. [PMID: 23273784 DOI: 10.1016/j.braindev.2012.11.015] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/03/2012] [Revised: 11/28/2012] [Accepted: 11/30/2012] [Indexed: 11/30/2022]
Abstract
Environment condition has been shown to play an important role in brain development. The present study examined the effects of enriched and impoverished environment on both spatial and emotional learning and memory of young mice and explored the underlying mechanisms. 3-week-old mice were housed in enriched environment (n=10, 10 mice in a large cage with toys and a running wheel), or standard environment (n=10, 10 mice in a large cage without objects), or impoverished environment (n=10, single mice in a small cage without objects) for 6weeks. Then, the spatial and emotional cognition of mice were evaluated by the water maze and step-down inhibitory avoidance test, respectively. To explore the underlying mechanisms, oxidation measurement in hippocampus and medial-temporal lobe cortex (MTLC) and apoptosis examination in hippocampus were performed. Results showed that compared with standard environment group, enriched and impoverished mice exhibited high and low performance levels in behavior tests, respectively. The oxidative status of hippocampus and MTLC were decreased in enriched group but increased in impoverished group. Moreover, changes in apoptosis of hippocampus in these two groups showed the same tendency with oxidative status. These results suggest that environment condition can simultaneously influence spatial and emotional learning and memory, which may result from inducing changes in the oxidative and apoptosis status in associated brain regions. Here, we firstly report using young mice to examine the oxidative status as a primary and direct factor to explore the mechanism of effects of different environment on both spatial and emotional cognition.
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Affiliation(s)
- Liang Cheng
- School of Life Sciences and Hubei Key Lab of Genetic Regulation and Integration Biology, Central China Normal University, Wuhan 430079, Hubei, China; Key Laboratory of Adolescent Cyberpsychology and Behavior (CCNU), Ministry of Education, Wuhan 430079, Hubei, China; School of Psychology, Central China Normal University, Wuhan 430079, Hubei, China
| | - Shao-Hui Wang
- School of Life Sciences and Hubei Key Lab of Genetic Regulation and Integration Biology, Central China Normal University, Wuhan 430079, Hubei, China
| | - Nan Jia
- School of Life Sciences and Hubei Key Lab of Genetic Regulation and Integration Biology, Central China Normal University, Wuhan 430079, Hubei, China
| | - Min Xie
- School of Life Sciences and Hubei Key Lab of Genetic Regulation and Integration Biology, Central China Normal University, Wuhan 430079, Hubei, China
| | - Xiao-Mei Liao
- School of Life Sciences and Hubei Key Lab of Genetic Regulation and Integration Biology, Central China Normal University, Wuhan 430079, Hubei, China.
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96
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Kirste I, Nicola Z, Kronenberg G, Walker TL, Liu RC, Kempermann G. Is silence golden? Effects of auditory stimuli and their absence on adult hippocampal neurogenesis. Brain Struct Funct 2013; 220:1221-8. [PMID: 24292324 PMCID: PMC4087081 DOI: 10.1007/s00429-013-0679-3] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2013] [Accepted: 11/16/2013] [Indexed: 11/30/2022]
Abstract
We have previously hypothesized that the reason why physical activity increases precursor cell proliferation in adult neurogenesis is that movement serves as non-specific signal to evoke the alertness required to meet cognitive demands. Thereby a pool of immature neurons is generated that are potentially recruitable by subsequent cognitive stimuli. Along these lines, we here tested whether auditory stimuli might exert a similar non-specific effect on adult neurogenesis in mice. We used the standard noise level in the animal facility as baseline and compared this condition to white noise, pup calls, and silence. In addition, as patterned auditory stimulus without ethological relevance to mice we used piano music by Mozart (KV 448). All stimuli were transposed to the frequency range of C57BL/6 and hearing was objectified with acoustic evoked potentials. We found that except for white noise all stimuli, including silence, increased precursor cell proliferation (assessed 24 h after labeling with bromodeoxyuridine, BrdU). This could be explained by significant increases in BrdU-labeled Sox2-positive cells (type-1/2a). But after 7 days, only silence remained associated with increased numbers of BrdU-labeled cells. Compared to controls at this stage, exposure to silence had generated significantly increased numbers of BrdU/NeuN-labeled neurons. Our results indicate that the unnatural absence of auditory input as well as spectrotemporally rich albeit ethological irrelevant stimuli activate precursor cells—in the case of silence also leading to greater numbers of newborn immature neurons—whereas ambient and unstructured background auditory stimuli do not.
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Affiliation(s)
- Imke Kirste
- CRTD, DFG Research Center for Regenerative Therapies Dresden, Fetscherstraße 105, 01307, Dresden, Germany
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97
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Chronic noise exposure and Alzheimer disease: Is there an etiological association? Med Hypotheses 2013; 81:623-6. [DOI: 10.1016/j.mehy.2013.07.017] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2013] [Revised: 06/27/2013] [Accepted: 07/05/2013] [Indexed: 11/19/2022]
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98
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Noise-induced hearing loss (NIHL) as a target of oxidative stress-mediated damage: cochlear and cortical responses after an increase in antioxidant defense. J Neurosci 2013; 33:4011-23. [PMID: 23447610 DOI: 10.1523/jneurosci.2282-12.2013] [Citation(s) in RCA: 154] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
This study addresses the relationship between cochlear oxidative damage and auditory cortical injury in a rat model of repeated noise exposure. To test the effect of increased antioxidant defenses, a water-soluble coenzyme Q10 analog (Qter) was used. We analyzed auditory function, cochlear oxidative stress, morphological alterations in auditory cortices and cochlear structures, and levels of coenzymes Q9 and Q10 (CoQ9 and CoQ10, respectively) as indicators of endogenous antioxidant capability. We report three main results. First, hearing loss and damage in hair cells and spiral ganglion was determined by noise-induced oxidative stress. Second, the acoustic trauma altered dendritic morphology and decreased spine number of II-III and V-VI layer pyramidal neurons of auditory cortices. Third, the systemic administration of the water-soluble CoQ10 analog reduced oxidative-induced cochlear damage, hearing loss, and cortical dendritic injury. Furthermore, cochlear levels of CoQ9 and CoQ10 content increased. These findings indicate that antioxidant treatment restores auditory cortical neuronal morphology and hearing function by reducing the noise-induced redox imbalance in the cochlea and the deafferentation effects upstream the acoustic pathway.
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99
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Cui B, Zhu L, She X, Wu M, Ma Q, Wang T, Zhang N, Xu C, Chen X, An G, Liu H. Chronic noise exposure causes persistence of tau hyperphosphorylation and formation of NFT tau in the rat hippocampus and prefrontal cortex. Exp Neurol 2012; 238:122-9. [PMID: 22971273 DOI: 10.1016/j.expneurol.2012.08.028] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2012] [Revised: 08/05/2012] [Accepted: 08/28/2012] [Indexed: 10/27/2022]
Abstract
The non-auditory effects of noise exposure on the central nervous system have been established both epidemiologically and experimentally. Chronic noise exposure (CNE) has been associated with tau hyperphosphorylation and Alzheimer's disease (AD)-like pathological changes. However, experimental evidence for these associations remains limited. The aim of the current study was to explore the effects of CNE [100 dB sound pressure level (SPL) white noise, 4 h/d×14 d] on tau phosphorylation in the rat hippocampus and the prefrontal cortex. Forty-eight male Wistar rats were randomly assigned to two groups: a noise-exposed group and a control group. The levels of radioimmunoprecipitation assay (RIPA)-soluble and RIPA-insoluble phosphorylated tau at Ser202, Ser396, Ser404, and Ser422 in the hippocampus and the prefrontal cortex were measured at different time points (days 0, 3, 7, and 14) after the end of the last noise exposure. Exposure to white noise for 14 consecutive days significantly increased the levels of tau phosphorylation at Ser202, Ser396, Ser404, and Ser422, the sites typically phosphorylated in AD brains, in the hippocampus and the prefrontal cortex. Tau hyperphosphorylation persisted for 7 to 14 d after the cessation of noise exposure. These alterations were also concomitant with the generation of pathological neurofibrillary tangle (NFT) tau 3, 7 and 14 d after the end of the stimulus. Furthermore, lasting increases in proteins involved in hyperphosphorylation, namely glycogen synthase kinase 3β (GSK3β) and protein phosphatase 2A (PP2A), were found to occur in close correspondence with increase in tau hyperphosphorylation. The results of this study show that CNE leads to long-lasting increases in non-NFT hyperphosphorylated tau and delayed formation of misfolded NFT tau in the hippocampus and the prefrontal cortex. Our results also provide evidence for the involvement of GSK3β and PP2A in these processes.
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Affiliation(s)
- Bo Cui
- Department of Occupational Hygiene, Institute of Health and Environmental Medicine, Academy of Military Medical Sciences, Tianjin, China.
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100
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Uran S, Aon-Bertolino M, Caceres L, Capani F, Guelman L. Rat hippocampal alterations could underlie behavioral abnormalities induced by exposure to moderate noise levels. Brain Res 2012; 1471:1-12. [DOI: 10.1016/j.brainres.2012.06.022] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2012] [Revised: 06/15/2012] [Accepted: 06/15/2012] [Indexed: 12/21/2022]
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