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Zhang Y, Wang Y, Wei R, Li X, Luo B, Zhang J, Zhang K, Fang S, Liu X, Chen G. Mitochondrial antioxidant elamipretide improves learning and memory impairment induced by chronic sleep deprivation in mice. Brain Behav 2024; 14:e3508. [PMID: 38688894 PMCID: PMC11061203 DOI: 10.1002/brb3.3508] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/23/2023] [Revised: 03/10/2024] [Accepted: 03/16/2024] [Indexed: 05/02/2024] Open
Abstract
BACKGROUND The inflammation and synaptic dysfunction induced by mitochondrial dysfunction play essential roles in the learning and memory impairment associated with sleep dysfunction. Elamipretide (SS-31), a novel mitochondrion-targeted antioxidant, was proven to improve mitochondrial dysfunction, the inflammatory response, synaptic dysfunction, and cognitive impairment in models of cerebral ischemia, sepsis, and type 2 diabetes. However, the potential for SS-31 to improve the cognitive impairment induced by chronic sleep deprivation (CSD) and its underlying mechanisms is unknown. METHODS Adult c57BL/6J mice were subjected to CSD for 21 days using an activity wheel accompanied by daily intraperitoneal injection of SS-31 (5 mg/kg). The novel object recognition and Morris water maze test were used to evaluate hippocampus-dependent cognitive function. Western blotting and reverse transcription-quantitative polymerase chain reaction assays were used to determine the effects of CSD and SS-31 on markers of mitochondria, inflammation response, and synaptic function. Enzyme-linked immunosorbent assays were used to examine the levels of proinflammatory cytokines. RESULTS SS-31 could improve the cognitive impairment induced by CSD. In particular, SS-31 treatment restored the CSD-induced decrease in sirtuin 1 (SIRT1) and peroxisome proliferator-activated receptor γ coactivator alpha levels and the increase in levels nuclear factor kappa-B and inflammatory cytokines, including interleukin (IL)-1β, IL-6, and tumor necrosis factor-alpha. Furthermore, SS-31 significantly increased the levels of brain-derived neurotrophic factor, postsynaptic density protein-95, and synaptophysin in CSD mice. CONCLUSION Taken together, these results suggest that SS-31 could improve CSD-induced mitochondrial biogenesis dysfunction, inflammatory response, synaptic dysfunction, and cognitive impairment by increasing SIRT1 expression levels.
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Affiliation(s)
- Yue‐Ming Zhang
- Department of Neurology (Sleep Disorders)The Affiliated Chaohu Hospital of Anhui Medical UniversityHefeiAnhuiP. R. China
| | - Ya‐Tao Wang
- Department of Neurology (Sleep Disorders)The Affiliated Chaohu Hospital of Anhui Medical UniversityHefeiAnhuiP. R. China
| | - Ru‐Meng Wei
- Department of Neurology (Sleep Disorders)The Affiliated Chaohu Hospital of Anhui Medical UniversityHefeiAnhuiP. R. China
| | - Xue‐Yan Li
- Department of Neurology (Sleep Disorders)The Affiliated Chaohu Hospital of Anhui Medical UniversityHefeiAnhuiP. R. China
| | - Bao‐Ling Luo
- Department of Neurology (Sleep Disorders)The Affiliated Chaohu Hospital of Anhui Medical UniversityHefeiAnhuiP. R. China
| | - Jing‐Ya Zhang
- Department of Neurology (Sleep Disorders)The Affiliated Chaohu Hospital of Anhui Medical UniversityHefeiAnhuiP. R. China
| | - Kai‐Xuan Zhang
- Department of Neurology (Sleep Disorders)The Affiliated Chaohu Hospital of Anhui Medical UniversityHefeiAnhuiP. R. China
| | - Shi‐Kun Fang
- Department of Neurology (Sleep Disorders)The Affiliated Chaohu Hospital of Anhui Medical UniversityHefeiAnhuiP. R. China
| | - Xue‐Chun Liu
- Department of NeurologyThe Second People's Hospital of Hefei and Affiliated Hefei Hospital of Anhui Medical UniversityHefeiAnhuiP. R. China
| | - Gui‐Hai Chen
- Department of Neurology (Sleep Disorders)The Affiliated Chaohu Hospital of Anhui Medical UniversityHefeiAnhuiP. R. China
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Diao H, Li Y, Sun W, Zhang J, Wang M, Chen Y, Zhou F, Li X. REM sleep deprivation induced by the modified multi-platform method has detrimental effects on memory: A systematic review and meta-analysis. Behav Brain Res 2023; 454:114652. [PMID: 37652237 DOI: 10.1016/j.bbr.2023.114652] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2023] [Revised: 08/17/2023] [Accepted: 08/29/2023] [Indexed: 09/02/2023]
Abstract
The modified multi-platform method (MMPM) is used to induce animal models of paradoxical sleep deprivation and impairs memory in rodents. However, variations in MMPM protocols have contributed to inconsistent conclusions across studies. This meta-analysis aimed to assess the variations of the MMPM and their effects on memory in rats and mice. A comprehensive search identified 60 studies, and 50 were included in our meta-analysis. Overall, the meta-analysis showed that the MMPM significantly reduced the percentage of time spent in target quadrants (I2 = 54 %, 95 % confidence interval [CI] = [-1.83, -1.18]) and the number of platform-area crossings (I2 = 26 %, 95 % CI = [-1.71, -1.07]) in the Morris water maze (MWM) and shortened the latency to entering the dark compartment in the passive avoidance task (I2 = 68 %, 95 % CI = [-1.36, -0.57]), but it increased the number of errors in the radial arm water maze (RAWM) (I2 = 59 %, 95 % CI = [1.29, 2.07]). Additionally, mice performed worse on the MWM, whereas rats performed worse on the passive avoidance task. More significant memory deficits were found in cross-learning and post-learning MMPM in the MWM and RAWM, respectively. This study provided evidence that the MMPM can be used in preclinical studies of memory deficits induced by paradoxical sleep deprivation.
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Affiliation(s)
- Huaqiong Diao
- Department of Encephalopathy, Third Affiliated Hospital, Beijing University of Chinese Medicine, Beijing, China
| | - Yiming Li
- Department of Chinese Medicine, Zibo Central Hospital, Shandong, China
| | - Wenjun Sun
- Department of Encephalopathy, Third Affiliated Hospital, Beijing University of Chinese Medicine, Beijing, China
| | - Jing Zhang
- Department of Encephalopathy, Third Affiliated Hospital, Beijing University of Chinese Medicine, Beijing, China
| | - Min Wang
- Department of Encephalopathy, Third Affiliated Hospital, Beijing University of Chinese Medicine, Beijing, China
| | - Yufei Chen
- Department of Encephalopathy, Third Affiliated Hospital, Beijing University of Chinese Medicine, Beijing, China
| | - Fen Zhou
- School of Nursing, Beijing University of Chinese Medicine, Beijing, China.
| | - Xiaoli Li
- Department of Encephalopathy, Third Affiliated Hospital, Beijing University of Chinese Medicine, Beijing, China.
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Lu Y, Xiao Y, Tu Y, Dai W, Xie Y. Propofol-induced sleep ameliorates cognition impairment in sleep-deprived rats. Sleep Breath 2023; 27:181-190. [PMID: 35314924 DOI: 10.1007/s11325-022-02591-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2021] [Revised: 02/19/2022] [Accepted: 02/25/2022] [Indexed: 10/18/2022]
Abstract
PURPOSE Propofol has been shown to clear sleep debt in rats after sleep deprivation (SD). We examined whether or not propofol-assisted sleep can restore cognitive function in SD rats and explored the possible mechanisms. METHODS A sleep deprivation model was established by housing 9 to 12 week-old rats to a multiplatform water tank for 96 h. Model rats were then intraperitoneally injected with different concentrations of propofol or 10% fat emulsion (vehicle control). All treatment groups were examined for spatial learning and memory ability in the Morris water maze (MWM). After euthanasia, morphological changes in the hippocampus, hippocampal neurons, and mitochondria were examined by hematoxylin-eosin staining and transmission electron microscopy. Serum and hippocampal levels of IL-1β, TNF-α, and hippocampal concentrations of ATP and Cyt-c were measured by ELISA (enzyme-linked immunosorbent assay). Immunohistochemistry and Western blotting were performed to assess hippocampal expression of Bcl-2, Bax, and cleaved caspase-3. RESULTS Results showed that escape latencies in MWM training trials were significantly shorter and target crossings in the memory probe trial significantly greater in propofol-treated SD model rats compared to vehicle-treated SD rats. Propofol also reduced the number of apoptotic bodies in the hippocampal CA1 region. Sleep deprivation reduced IL-1β and ATP in hippocampus while increasing TNF-α and Cyt-c, and propofol treatment reversed all these changes. There was no significant difference in Bcl-2 expression between propofol- and vehicle-treated SD rats, but pro-apoptotic Bax and cleaved caspase-3 expression levels were significantly reduced by propofol in SD rats. CONCLUSIONS Propofol-assisted sleep restored cognitive function in SD rats possibly by attenuating mitochondria-mediated neuronal apoptosis in the hippocampus.
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Affiliation(s)
- Yizhi Lu
- Department of Anesthesiology, The First Affiliated Hospital of Guangxi Medical University, no.6 shuang-yong road, Nanning, 530021, Guangxi, China
| | - Yong Xiao
- Department of Anesthesiology, The First Affiliated Hospital of Guangxi Medical University, no.6 shuang-yong road, Nanning, 530021, Guangxi, China
| | - Youbing Tu
- Department of Anesthesiology, Shenzhen People's Hospital, The First Affiliated Hospital of Southern University of Science and Technology, Shenzhen, 518020, Guangdong, China
| | - Weixin Dai
- Department of Anesthesiology, The First Affiliated Hospital of Guangxi Medical University, no.6 shuang-yong road, Nanning, 530021, Guangxi, China
| | - Yubo Xie
- Department of Anesthesiology, The First Affiliated Hospital of Guangxi Medical University, no.6 shuang-yong road, Nanning, 530021, Guangxi, China.
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Wang L, Aton SJ. Perspective - ultrastructural analyses reflect the effects of sleep and sleep loss on neuronal cell biology. Sleep 2022; 45:zsac047. [PMID: 35554582 PMCID: PMC9113019 DOI: 10.1093/sleep/zsac047] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2022] [Revised: 02/05/2022] [Indexed: 11/13/2022] Open
Abstract
Recent electron microscopic analyses of neurons in the Drosophila and rodent brain demonstrate that acute or chronic sleep loss can alter the structures of various organelles, including mitochondria, nucleus, and Golgi apparatus. Here, we discuss these findings in the context of biochemical findings from the sleep deprived brain, to clarify how these morphological changes may related to altered organelle function. We discuss how, taken together, the available data suggest that sleep loss (particularly chronic sleep loss) disrupts such fundamental cellular processes as transcription, translation, intracellular transport, and metabolism. A better understanding of these effects will have broad implications for understanding the biological importance of sleep, and the relationship of sleep loss to neuropathology.
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Affiliation(s)
- Lijing Wang
- Department of Molecular, Cellular, and Developmental Biology, University of Michigan, Ann Arbor, MI, USA
| | - Sara J Aton
- Department of Molecular, Cellular, and Developmental Biology, University of Michigan, Ann Arbor, MI, USA
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Dai W, Xiao Y, Tu Y, Xiao F, Lu Y, Qin Y, Xie Y. Propofol protects hippocampal neurons in sleep-deprived rats by inhibiting mitophagy and autophagy. ANNALS OF TRANSLATIONAL MEDICINE 2021; 9:1427. [PMID: 34733979 PMCID: PMC8506745 DOI: 10.21037/atm-21-3872] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/05/2021] [Accepted: 09/09/2021] [Indexed: 12/19/2022]
Abstract
Background Sleep deprivation (SD) causes a disturbance in the cognitive function of rats. While propofol has a powerful sedative and hypnotic effect and is an antioxidant, its effect on the cognitive function of rats following SD remains unknown. The purpose of this study was to explore the protective effects of propofol on excessive autophagy and mitophagy in the hippocampus of rats after SD. Methods Adult male rats were intraperitoneally injected with 30 mg/kg of propofol after 96 hours of SD. Then we evaluated the effect of propofol on the cognitive function of sleep deprived rats by the Morris water maze. Transmission electron microscopy, Western blotting, PCR, immunohistochemistry, autophagy enhancer and autophagy inhibitor were used to study the effect of propofol on hippocampal neurons of rat with excessive autophagy and mitophagy. Results The behavioral experimental results of the Morris water maze showed that propofol improved the learning and memory ability of sleep-deprived rats. The expression of Beclin1, PINK1, parkin, p62, and LC3 protein increased significantly after sleep deprivation. While the intervention of propofol could significantly reduce the expression of these proteins, rapamycin treatment eliminated this effect. Conclusions Our findings showed that propofol could reduce the impairment of learning and memory in sleep-deprived rats by inhibiting excessive autophagy and mitophagy in hippocampal neurons. This strategy may provide an application basis for the clinical use of propofol in patients with chronic insomnia.
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Affiliation(s)
- Weixin Dai
- Department of Anesthesiology, the First Affiliated Hospital of Guangxi Medical University, Nanning, China
| | - Yong Xiao
- Department of Anesthesiology, the First Affiliated Hospital of Guangxi Medical University, Nanning, China
| | - Youbing Tu
- Department of Anesthesiology, the First Affiliated Hospital of Guangxi Medical University, Nanning, China
| | - Fei Xiao
- Department of Anesthesiology, the First Affiliated Hospital of Guangxi Medical University, Nanning, China
| | - Yizhi Lu
- Department of Anesthesiology, the First Affiliated Hospital of Guangxi Medical University, Nanning, China
| | - Yinying Qin
- Department of Anesthesiology, the First Affiliated Hospital of Guangxi Medical University, Nanning, China
| | - Yubo Xie
- Department of Anesthesiology, the First Affiliated Hospital of Guangxi Medical University, Nanning, China
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6
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Lu Z, Hu Y, Wang Y, Zhang T, Long J, Liu J. Topological reorganizations of mitochondria isolated from rat brain after 72 hours of paradoxical sleep deprivation, revealed by electron cryo-tomography. Am J Physiol Cell Physiol 2021; 321:C17-C25. [PMID: 33979213 DOI: 10.1152/ajpcell.00077.2021] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Sleep deprivation has profound influence on several aspects of health and disease. Mitochondria dysfunction has been implicated to play an essential role in the neuronal cellular damage induced by sleep deprivation, but little is known about how neuronal mitochondrial ultrastructure is affected under sleep deprivation. In this report, we utilized electron cryo-tomography to reconstruct the three-dimensional (3-D) mitochondrial structure and extracted morphometric parameters to quantitatively characterize its reorganizations. Isolated mitochondria from the hippocampus and cerebral cortex of adult male Sprague-Dawley rats after 72 h of paradoxical sleep deprivation (PSD) were reconstructed and analyzed. Statistical analysis of six morphometric parameters specific to the mitochondrial inner membrane topology revealed identical pattern of changes in both the hippocampus and cerebral cortex but with higher significance levels in the hippocampus. The structural differences were indistinguishable by conventional phenotypic methods based on two-dimensional electron microscopy images or 3-D electron tomography reconstructions. Furthermore, to correlate structure alterations with mitochondrial functions, high-resolution respirometry was employed to investigate the effects of PSD on mitochondrial respiration, which showed that PSD significantly suppressed the mitochondrial respiratory capacity of the hippocampus, whereas the isolated mitochondria from the cerebral cortex were less affected. These results demonstrate the capability of the morphometric parameters for quantifying complex structural reorganizations and suggest a correlation between PSD and inner membrane architecture/respiratory functions of the brain mitochondria with variable effects in different brain regions.
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Affiliation(s)
- Zhuoyang Lu
- Center for Mitochondrial Biology and Medicine, The Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology, Xi'an Jiaotong University, Xi'an, China
| | - Yachong Hu
- Center for Mitochondrial Biology and Medicine, The Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology, Xi'an Jiaotong University, Xi'an, China
| | - Yongyao Wang
- Center for Mitochondrial Biology and Medicine, The Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology, Xi'an Jiaotong University, Xi'an, China
| | - Tiantian Zhang
- Center for Mitochondrial Biology and Medicine, The Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology, Xi'an Jiaotong University, Xi'an, China
| | - Jiangang Long
- Center for Mitochondrial Biology and Medicine, The Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology, Xi'an Jiaotong University, Xi'an, China
| | - Jiankang Liu
- Center for Mitochondrial Biology and Medicine, The Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology, Xi'an Jiaotong University, Xi'an, China
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7
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Tabassum S, Misrani A, Tabassum S, Ahmed A, Yang L, Long C. Disrupted prefrontal neuronal oscillations and morphology induced by sleep deprivation in young APP/PS1 transgenic AD mice. Brain Res Bull 2020; 166:12-20. [PMID: 33186630 DOI: 10.1016/j.brainresbull.2020.11.003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2020] [Revised: 10/31/2020] [Accepted: 11/06/2020] [Indexed: 12/20/2022]
Abstract
Emerging evidence suggests that sleep deprivation (SD) is a public health epidemic and increase the risk of Alzheimer's disease (AD) progression. However, the underlying mechanisms remain to be fully investigated. In this study, we investigate the impact of 72 h SD on the prefrontal cortex (PFC) of 3∼4-months-old APP/PS1 transgenic AD mice - at an age before the onset of plaque formation and memory decline. Our results reveal that SD alters delta, theta and high-gamma oscillations in the PFC, accompanied by increased levels of excitatory postsynaptic signaling (NMDAR, GluR1, and CaMKII) in AD mice. SD also caused alteration in the dendritic length and dendritic branches of PFC pyramidal neurons, accompanied by a reduction in neuroprotective agent CREB. This study suggests that failure to acquire adequate sleep could trigger an early electrophysiological, molecular, and morphological alteration in the PFC of AD mice. Therapeutic interventions that manipulate sleep by targeting these pathways may be a promising approach toward delaying the progression of this incurable disease.
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Affiliation(s)
- Sidra Tabassum
- School of Life Sciences, South China Normal University, Guangzhou 510631, PR China; School of Life Sciences, Guangzhou University, Guangzhou 510006, PR China
| | - Afzal Misrani
- School of Life Sciences, South China Normal University, Guangzhou 510631, PR China; School of Life Sciences, Guangzhou University, Guangzhou 510006, PR China
| | - Sumaiya Tabassum
- School of Life Sciences, South China Normal University, Guangzhou 510631, PR China
| | - Adeel Ahmed
- School of Life Sciences, South China Normal University, Guangzhou 510631, PR China
| | - Li Yang
- School of Life Sciences, Guangzhou University, Guangzhou 510006, PR China.
| | - Cheng Long
- School of Life Sciences, South China Normal University, Guangzhou 510631, PR China; South China Normal University-Panyu Central Hospital Joint Laboratory of Translational Medical Research, Panyu Central Hospital, Guangzhou 511400, PR China.
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8
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Kordestani-Moghadam P, Nasehi M, Vaseghi S, Khodagholi F, Zarrindast MR. The role of sleep disturbances in depressive-like behavior with emphasis on α-ketoglutarate dehydrogenase activity in rats. Physiol Behav 2020; 224:113023. [PMID: 32574661 DOI: 10.1016/j.physbeh.2020.113023] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2020] [Revised: 06/01/2020] [Accepted: 06/19/2020] [Indexed: 02/06/2023]
Abstract
Sleep disorders may induce anxiety- and depressive-like behaviors. Furthermore, sleep disorders can alter the function of α-KGDH (α-ketoglutarate dehydrogenase), which is involved in the citric acid cycle. In this study, we evaluated the effect of two models of sleep deprivation (SD) including total SD (TSD) and partial SD (PSD), and two models of napping combined with each models of SD on rats' performance in Forced Swim Test (FST) and α-KGDH activity in both hemispheres of the amygdala. 64 male Wistar rats were used in this study. A modified water box was also used to induce SD. The results showed that, immobility was increased in 48-hour PSD group, indicating a possible depressive-like behavior. Swimming time was also increased following 48-hour TSD. However, climbing time was decreased in 48-hour PSD/TSD groups. Additionally, α-KGDH activity was increased in the left amygdala in 48-hour TSD and PSD groups. In conclusion, PSD may increase depressive-like behavior. TSD and PSD can decrease swimming time but increase climbing time, and these effects may be related to serotonergic and noradrenergic transmissions, respectively. Increase in α-KGDH activity in the left amygdala may be related to the brain's need for more energy during prolonged wakefulness. α-KGDH activity in the right amygdala was unaffected probably due to a decrease in alertness following SD.
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Affiliation(s)
| | - Mohammad Nasehi
- Cognitive and Neuroscience Research Center (CNRC), Amir-Almomenin Hospital, Tehran Medical Sciences, Islamic Azad University, Tehran, Iran.
| | - Salar Vaseghi
- Cognitive and Neuroscience Research Center (CNRC), Amir-Almomenin Hospital, Tehran Medical Sciences, Islamic Azad University, Tehran, Iran; Institute for Cognitive Science Studies (ICSS), Tehran, Iran
| | - Fariba Khodagholi
- Neuroscience Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Mohammad-Reza Zarrindast
- Institute for Cognitive Science Studies (ICSS), Tehran, Iran; Department of Pharmacology School of Medicine, Tehran University of Medical Sciences, Tehran, Iran; Department of Neuroendocrinology Endocrinology and Metabolism Research Institute, Tehran University of Medical Sciences, Tehran, Iran
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Amirazodi F, Mehrabi A, Amirazodi M, Parsania S, Rajizadeh MA, Esmaeilpour K. The Combination Effects of Resveratrol and Swimming HIIT Exercise on Novel Object Recognition and Open-field Tasks in Aged Rats. Exp Aging Res 2020; 46:336-358. [PMID: 32324489 DOI: 10.1080/0361073x.2020.1754015] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
INTRODUCTION Resveratrol, a natural polyphenol abundant in grapes and red wine, has been reported to exert numerous beneficial health effects in the body. High-Intensity Interval Exercise (HIIT) is a form of interval training that provides improved athletic capacity and has a protective effect on health. The purpose of this study was to investigate the interactive effects of swimming HIIT and Resveratrol supplementation on behavioral function in Novel object recognition and open-field tests in aged rats. METHODS A total of 45 aged male Wistar rats with an age of 20 months were randomly assigned into five groups of control (C), swimming HIIT (SW-HIIT), swimming HIIT with Resveratrol supplementation (SW-HIIT-R), Resveratrol supplementation (R), and solvent of Resveratrol supplementation (SR). There was also another group that included young animals (2-month-old) and was used to compare with older animals. Swimming HIIT and Resveratrol supplementation groups performed the exercise and received Resveratrol (10 mg/kg/day, gavage) for six weeks. Novel object recognition and open-field tests were used for evaluating the behavioral functions in animals. RESULTS The results showed that HIIT and Resveratrol significantly improved recognition memory compared to old animals. Moreover, it seems that HIIT and Resveratrol partly could modulate anxiety-like behaviors compared to old animals in the open-field test.
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Affiliation(s)
- Fatemeh Amirazodi
- Department of Education, Department of Foundations of Education, International Division, Shiraz University , Shiraz, Iran.,Neuroscience Research Center, Institute of Neuropharmacology, Kerman University of Medical Sciences , Kerman, Iran
| | - Amin Mehrabi
- Neuroscience Research Center, Institute of Neuropharmacology, Kerman University of Medical Sciences , Kerman, Iran.,Department of Exercise Physiology, Kish International Campus, University of Tehran , Kish, Iran
| | - Maryam Amirazodi
- Neuroscience Research Center, Institute of Neuropharmacology, Kerman University of Medical Sciences , Kerman, Iran.,Shiraz University International Division, Shiraz University , Shiraz, Iran
| | - Shahrnaz Parsania
- Neuroscience Research Center, Institute of Neuropharmacology, Kerman University of Medical Sciences , Kerman, Iran
| | - Mohammad Amin Rajizadeh
- Neuroscience Research Center, Institute of Neuropharmacology, Kerman University of Medical Sciences , Kerman, Iran.,Department of Physiology & Pharmacology, Kerman Medical University of Sciences , Kerman, Iran
| | - Khadijeh Esmaeilpour
- Neuroscience Research Center, Institute of Neuropharmacology, Kerman University of Medical Sciences , Kerman, Iran.,Department of Physiology & Pharmacology, Kerman Medical University of Sciences , Kerman, Iran
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Misrani A, Tabassum S, Wang M, Chen J, Yang L, Long C. Citalopram prevents sleep-deprivation-induced reduction in CaMKII-CREB-BDNF signaling in mouse prefrontal cortex. Brain Res Bull 2020; 155:11-18. [DOI: 10.1016/j.brainresbull.2019.11.007] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2019] [Revised: 10/04/2019] [Accepted: 11/14/2019] [Indexed: 12/11/2022]
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11
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The Effect of REM Sleep Deprivation on mTOR Signaling-Induced by Severe Physical Exercise. ARCHIVES OF NEUROSCIENCE 2019. [DOI: 10.5812/ans.92002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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12
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Duncan MJ, Farlow H, Tirumalaraju C, Yun DH, Wang C, Howard JA, Sanden MN, O'Hara BF, McQuerry KJ, Bachstetter AD. Effects of the dual orexin receptor antagonist DORA-22 on sleep in 5XFAD mice. ALZHEIMERS & DEMENTIA-TRANSLATIONAL RESEARCH & CLINICAL INTERVENTIONS 2019; 5:70-80. [PMID: 30859123 PMCID: PMC6396100 DOI: 10.1016/j.trci.2019.01.003] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Introduction Sleep disruption is a characteristic of Alzheimer's disease (AD) that may exacerbate disease progression. This study tested whether a dual orexin receptor antagonist (DORA) would enhance sleep and attenuate neuropathology, neuroinflammation, and cognitive deficits in an AD-relevant mouse model, 5XFAD. Methods Wild-type (C57Bl6/SJL) and 5XFAD mice received chronic treatment with vehicle or DORA-22. Piezoelectric recordings monitored sleep and spatial memory was assessed via spontaneous Y-maze alternations. Aβ plaques, Aβ levels, and neuroinflammatory markers were measured by immunohistochemistry, enzyme-linked immunosorbent assay, and real-time polymerase chain reaction, respectively. Results In 5XFAD mice, DORA-22 significantly increased light-phase sleep without reducing Aβ levels, plaque density, or neuroinflammation. Effects of DORA-22 on cognitive deficits could not be determined because the 5XFAD mice did not exhibit deficits. Discussion These findings suggest that DORAs may improve sleep in AD patients. Further investigations should optimize the dose and duration of DORA-22 treatment and explore additional AD-relevant animal models and cognitive tests.
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Affiliation(s)
- Marilyn J Duncan
- Department of Neuroscience, University of Kentucky College of Medicine, Lexington, KY, USA
| | - Hannah Farlow
- Department of Neuroscience, University of Kentucky College of Medicine, Lexington, KY, USA
| | - Chairtra Tirumalaraju
- Department of Neuroscience, University of Kentucky College of Medicine, Lexington, KY, USA
| | - Do-Hyun Yun
- Department of Neuroscience, University of Kentucky College of Medicine, Lexington, KY, USA
| | - Chanung Wang
- Department of Biology, University of Kentucky, Lexington, KY, USA
| | - James A Howard
- Department of Neuroscience, University of Kentucky College of Medicine, Lexington, KY, USA
| | - Madison N Sanden
- Department of Statistics, University of Kentucky, Lexington, KY, USA
| | - Bruce F O'Hara
- Department of Biology, University of Kentucky, Lexington, KY, USA
| | | | - Adam D Bachstetter
- Department of Neuroscience, University of Kentucky College of Medicine, Lexington, KY, USA.,Spinal Cord and Brain Injury Research Center, University of Kentucky College of Medicine, Lexington, KY, USA
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Nasehi M, Mohammadi A, Ebrahimi-Ghiri M, Hashemi M, Zarrindast MR. MLC901 during sleep deprivation rescues fear memory disruption in rats. Naunyn Schmiedebergs Arch Pharmacol 2019; 392:813-821. [DOI: 10.1007/s00210-018-01612-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2018] [Accepted: 12/28/2018] [Indexed: 12/31/2022]
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Hinojosa-Godinez A, Jave-Suarez LF, Flores-Soto M, Gálvez-Contreras AY, Luquín S, Oregon-Romero E, González-Pérez O, González-Castañeda RE. Melatonin modifies SOX2 + cell proliferation in dentate gyrus and modulates SIRT1 and MECP2 in long-term sleep deprivation. Neural Regen Res 2019; 14:1787-1795. [PMID: 31169197 PMCID: PMC6585545 DOI: 10.4103/1673-5374.257537] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
Abstract
Melatonin is a pleiotropic molecule that, after a short-term sleep deprivation, promotes the proliferation of neural stem cells in the adult hippocampus. However, this effect has not been observed in long-term sleep deprivation. The precise mechanism exerted by melatonin on the modulation of neural stem cells is not entirely elucidated, but evidence indicates that epigenetic regulators may be involved in this process. In this study, we investigated the effect of melatonin treatment during a 96-hour sleep deprivation and analyzed the expression of epigenetic modulators predicted by computational text mining and keyword clusterization. Our results showed that the administration of melatonin under sleep-deprived conditions increased the MECP2 expression and reduced the SIRT1 expression in the dentate gyrus. We observed that let-7b, mir-132, and mir-124 were highly expressed in the dentate gyrus after melatonin administration, but they were not modified by sleep deprivation. In addition, we found more Sox2+/5-bromo-2′-deoxyuridine (BrdU)+ cells in the subgranular zone of the sleep-deprived group treated with melatonin than in the untreated group. These findings may support the notion that melatonin modifies the expression of epigenetic mediators that, in turn, regulate the proliferation of neural progenitor cells in the adult dentate gyrus under long-term sleep-deprived conditions. All procedures performed in this study were approved by the Animal Ethics Committee of the University of Guadalajara, Mexico (approval No. CI-16610) on January 2, 2016.
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Affiliation(s)
- Alan Hinojosa-Godinez
- Laboratorio de Microscopía de Alta Resolución, Departamento de Neurociencias, Centro Universitario de Ciencias de la Salud, Universidad de Guadalajara, Guadalajara, México
| | - Luis F Jave-Suarez
- División de Inmunología, Centro de Investigación Biomédica de Occidente, Instituto Mexicano del Seguro Social, Guadalajara, México
| | - Mario Flores-Soto
- División de Neurociencias, Centro de Investigación Biomédica de Occidente, Instituto Mexicano del Seguro Social, Guadalajara, México
| | - Alma Y Gálvez-Contreras
- Laboratorio de Microscopía de Alta Resolución, Departamento de Neurociencias; Unidad de Atención en Neurociencias, Departamento de Neurociencias, Centro Universitario de Ciencias de la Salud, Universidad de Guadalajara, Guadalajara, México
| | - Sonia Luquín
- Laboratorio de Microscopía de Alta Resolución, Departamento de Neurociencias, Centro Universitario de Ciencias de la Salud, Universidad de Guadalajara, Guadalajara, México
| | - Edith Oregon-Romero
- Instituto de Investigación en Ciencias Biomédicas (IICB), Departamento de Biología Molecular y Genómica, Centro Universitario de Ciencias de la Salud, Universidad de Guadalajara, Guadalajara, México
| | - Oscar González-Pérez
- Laboratorio de Neurociencias, Facultad de Psicología, Universidad de Colima, Colima, México
| | - Rocio E González-Castañeda
- Laboratorio de Microscopía de Alta Resolución, Departamento de Neurociencias; Unidad de Atención en Neurociencias, Departamento de Neurociencias, Centro Universitario de Ciencias de la Salud, Universidad de Guadalajara, Guadalajara, México
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Abstract
The brain is both the orchestrator as well as the target of the innate immune system's response to the aseptic trauma of surgery. When trauma-induced inflammation is not appropriately regulated persistent neuro-inflammation interferes with the synaptic plasticity that underlies the learning and memory aspects of cognition. The complications that ensue, include postoperative delirium (POD) and postoperative cognitive dysfunction (POCD) at two poles of a constellation that is now termed perioperative neurocognitive disorders. While the relationship of acute POD to the more indolent POCD is not completely understood both can be further complicated by earlier-onset of dementia and higher mortality. How and why these disorders occur is the focus of this report. The innate immune system response to peripheral trauma signals to the brain through a regulated cascade of cellular and molecular actors producing a teleological defense mechanism, "sickness behavior," to curtail further injury and initiate repair. Sickness behavior, including disordered cognition, is terminated by neural and humoral pathways that restore homeostasis and launch the organism on a path to good health. With so many "moving parts" the innate immune system is vulnerable in clinical settings that include advanced age and lifestyle-induced diseases such as "unhealthy" obesity and the inevitable insulin resistance. Under these conditions, inflammation may become exaggerated and long-lived. Consideration is provided how to identify the high-risk surgical patient and both pharmacological (including biological compounds) and non-pharmacological strategies to customize care.
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Affiliation(s)
- Sarah Saxena
- Center for Cerebrovascular Research, Department of Anesthesia and Perioperative Care, UCSF; Department of anesthesia, Université Libre de Bruxelles, Belgium
| | - Mervyn Maze
- Center for Cerebrovascular Research, Department of Anesthesia and Perioperative Care, UCSF.
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Fisk AS, Tam SKE, Brown LA, Vyazovskiy VV, Bannerman DM, Peirson SN. Light and Cognition: Roles for Circadian Rhythms, Sleep, and Arousal. Front Neurol 2018; 9:56. [PMID: 29479335 PMCID: PMC5811463 DOI: 10.3389/fneur.2018.00056] [Citation(s) in RCA: 102] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2017] [Accepted: 01/22/2018] [Indexed: 01/12/2023] Open
Abstract
Light exerts a wide range of effects on mammalian physiology and behavior. As well as synchronizing circadian rhythms to the external environment, light has been shown to modulate autonomic and neuroendocrine responses as well as regulating sleep and influencing cognitive processes such as attention, arousal, and performance. The last two decades have seen major advances in our understanding of the retinal photoreceptors that mediate these non-image forming responses to light, as well as the neural pathways and molecular mechanisms by which circadian rhythms are generated and entrained to the external light/dark (LD) cycle. By contrast, our understanding of the mechanisms by which lighting influences cognitive processes is more equivocal. The effects of light on different cognitive processes are complex. As well as the direct effects of light on alertness, indirect effects may also occur due to disrupted circadian entrainment. Despite the widespread use of disrupted LD cycles to study the role circadian rhythms on cognition, the different experimental protocols used have subtly different effects on circadian function which are not always comparable. Moreover, these protocols will also disrupt sleep and alter physiological arousal, both of which are known to modulate cognition. Studies have used different assays that are dependent on different cognitive and sensory processes, which may also contribute to their variable findings. Here, we propose that studies addressing the effects of different lighting conditions on cognitive processes must also account for their effects on circadian rhythms, sleep, and arousal if we are to fully understand the physiological basis of these responses.
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Affiliation(s)
- Angus S Fisk
- Sleep and Circadian Neuroscience Institute (SCNi), Nuffield Department of Clinical Neurosciences, University of Oxford, Oxford, United Kingdom
| | - Shu K E Tam
- Department of Experimental Psychology, University of Oxford, Oxford, United Kingdom
| | - Laurence A Brown
- Sleep and Circadian Neuroscience Institute (SCNi), Nuffield Department of Clinical Neurosciences, University of Oxford, Oxford, United Kingdom
| | - Vladyslav V Vyazovskiy
- Department of Physiology, Anatomy and Genetics, University of Oxford, Oxford, United Kingdom
| | - David M Bannerman
- Department of Experimental Psychology, University of Oxford, Oxford, United Kingdom
| | - Stuart N Peirson
- Sleep and Circadian Neuroscience Institute (SCNi), Nuffield Department of Clinical Neurosciences, University of Oxford, Oxford, United Kingdom
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17
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Frontal cortical mitochondrial dysfunction and mitochondria-related β-amyloid accumulation by chronic sleep restriction in mice. Neuroreport 2018; 27:916-22. [PMID: 27341212 PMCID: PMC4937805 DOI: 10.1097/wnr.0000000000000631] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
Mitochondrial dysfunction induced by mitochondria-related β-amyloid (Aβ) accumulation is increasingly being considered a novel risk factor for sporadic Alzheimer’s disease pathophysiology. The close relationship between chronic sleep restriction (CSR) and cortical Aβ elevation was confirmed recently. By assessing frontal cortical mitochondrial function (electron microscopy manifestation, cytochrome C oxidase concentration, ATP level, and mitochondrial membrane potential) and the levels of mitochondria-related Aβ in 9-month-old adult male C57BL/6J mice subjected to CSR and as an environmental control (CO) group, we aimed to evaluate the association of CSR with mitochondrial dysfunction and mitochondria-related Aβ accumulation. In this study, frontal cortical mitochondrial dysfunction was significantly more severe in CSR mice compared with CO animals. Furthermore, CSR mice showed higher mitochondria-associated Aβ, total Aβ, and mitochondria-related β-amyloid protein precursor (AβPP) levels compared with CO mice. In the CSR model, mouse frontal cortical mitochondrial dysfunction was correlated with mitochondria-associated Aβ and mitochondria-related AβPP levels. However, frontal cortical mitochondria-associated Aβ levels showed no significant association with cortical total Aβ and mitochondrial AβPP concentrations. These findings indicated that CSR-induced frontal cortical mitochondrial dysfunction and mitochondria-related Aβ accumulation, which was closely related to mitochondrial dysfunction under CSR.
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Ahuja S, Chen RK, Kam K, Pettibone WD, Osorio RS, Varga AW. Role of normal sleep and sleep apnea in human memory processing. Nat Sci Sleep 2018; 10:255-269. [PMID: 30214331 PMCID: PMC6128282 DOI: 10.2147/nss.s125299] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
A fundamental problem in the field of obstructive sleep apnea (OSA) and memory is that it has historically minimized the basic neurobiology of sleep's role in memory. Memory formation has been classically divided into phases of encoding, processing/consolidation, and retrieval. An abundance of evidence suggests that sleep plays a critical role specifically in the processing/consolidation phase, but may do so differentially for memories that were encoded using particular brain circuits. In this review, we discuss some of the more established evidence for sleep's function in the processing of declarative, spatial navigational, emotional, and motor/procedural memories and more emerging evidence highlighting sleep's importance in higher order functions such as probabilistic learning, transitive inference, and category/gist learning. Furthermore, we discuss sleep's capacity for memory augmentation through targeted/cued memory reactivation. OSA - by virtue of its associated sleep fragmentation, intermittent hypoxia, and potential brain structural effects - is well positioned to specifically impact the processing/consolidation phase, but testing this possibility requires experimental paradigms in which memory encoding and retrieval are separated by a period of sleep with and without the presence of OSA. We argue that such paradigms should focus on the specific types of memory tasks for which sleep has been shown to have a significant effect. We discuss the small number of studies in which this has been done, in which OSA nearly uniformly negatively impacts offline memory processing. When periods of offline processing are minimal or absent and do not contain sleep, as is the case in the broad literature on OSA and memory, the effects of OSA on memory are far less consistent.
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Affiliation(s)
- Shilpi Ahuja
- Mount Sinai Integrative Sleep Center, Division of Pulmonary, Critical Care, and Sleep Medicine, Icahn School of Medicine at Mount Sinai, New York, NY, USA,
| | - Rebecca K Chen
- Mount Sinai Integrative Sleep Center, Division of Pulmonary, Critical Care, and Sleep Medicine, Icahn School of Medicine at Mount Sinai, New York, NY, USA,
| | - Korey Kam
- Mount Sinai Integrative Sleep Center, Division of Pulmonary, Critical Care, and Sleep Medicine, Icahn School of Medicine at Mount Sinai, New York, NY, USA,
| | - Ward D Pettibone
- Mount Sinai Integrative Sleep Center, Division of Pulmonary, Critical Care, and Sleep Medicine, Icahn School of Medicine at Mount Sinai, New York, NY, USA,
| | - Ricardo S Osorio
- Center for Brain Health, Department of Psychiatry, NYU School of Medicine, New York, NY, USA
| | - Andrew W Varga
- Mount Sinai Integrative Sleep Center, Division of Pulmonary, Critical Care, and Sleep Medicine, Icahn School of Medicine at Mount Sinai, New York, NY, USA,
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19
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Cordeira J, Kolluru SS, Rosenblatt H, Kry J, Strecker RE, McCarley RW. Learning and memory are impaired in the object recognition task during metestrus/diestrus and after sleep deprivation. Behav Brain Res 2017; 339:124-129. [PMID: 29180134 DOI: 10.1016/j.bbr.2017.11.033] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2017] [Revised: 11/23/2017] [Accepted: 11/23/2017] [Indexed: 01/25/2023]
Abstract
Females are an under-represented research model and the mechanisms through which sleep loss impairs cognition are not clear. Since levels of reproductive hormones and the estrous cycle are sensitive to sleep loss and necessary for learning and memory, we hypothesized that sleep deprivation impacts learning and memory in female mice by interfering with the estrous cycle. We used the object recognition task to assess learning and memory in female mice during separate phases of the estrous cycle and after sleep loss. Mice in metestrus/diestrus attended to sample objects less than mice in proestrus/estrus during object acquisition, the first phase of the object recognition task. Subsequently, during the recognition phase of the task, only mice in proestrus/estrus displayed a preference for the novel object. Sleep deprivation for 12h immediately before the object recognition task reduced time attending to sample objects and novel object preference for mice in proestrus/estrus, without changing length of the estrous cycle. These results show that sleep deprived mice in proestrus/estrus had learning deficits and memory impairments, like mice in metestrus/diestrus. Since sleep deprivation did not disrupt the estrous cycle, however, results did not support the hypothesis. Cognitive impairments due to acute sleep loss were not due to alterations to the estrous cycle.
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Affiliation(s)
- Joshua Cordeira
- Department of Biological & EnvironmentalSciences, Western Connecticut State University, Danbury, CT, USA.
| | - Sai Saroja Kolluru
- Department of Biological & EnvironmentalSciences, Western Connecticut State University, Danbury, CT, USA
| | - Heather Rosenblatt
- Department of Biological & EnvironmentalSciences, Western Connecticut State University, Danbury, CT, USA
| | - Jenny Kry
- Department of Biological & EnvironmentalSciences, Western Connecticut State University, Danbury, CT, USA
| | - Robert E Strecker
- Department of Psychiatry, Harvard Medical School and Veterans Affairs Boston Healthcare System, West Roxbury, MA 02132, USA
| | - Robert W McCarley
- Department of Psychiatry, Harvard Medical School and Veterans Affairs Boston Healthcare System, Brockton, MA 02301, USA
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20
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Abd Rashid N, Hapidin H, Abdullah H, Ismail Z, Long I. Nicotine-prevented learning and memory impairment in REM sleep-deprived rat is modulated by DREAM protein in the hippocampus. Brain Behav 2017. [PMID: 28638710 PMCID: PMC5474708 DOI: 10.1002/brb3.704] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
INTRODUCTION REM sleep deprivation is associated with impairment in learning and memory, and nicotine treatment has been shown to attenuate this effect. Recent studies have demonstrated the importance of DREAM protein in learning and memory processes. This study investigates the association of DREAM protein in REM sleep-deprived rats hippocampus upon nicotine treatment. METHODS Male Sprague Dawley rats were subjected to normal condition, REM sleep deprivation and control wide platform condition for 72 hr. During this procedure, saline or nicotine (1 mg/kg) was given subcutaneously twice a day. Then, Morris water maze (MWM) test was used to assess learning and memory performance of the rats. The rats were sacrificed and the brain was harvested for immunohistochemistry and Western blot analysis. RESULTS MWM test found that REM sleep deprivation significantly impaired learning and memory performance without defect in locomotor function associated with a significant increase in hippocampus DREAM protein expression in CA1, CA2, CA3, and DG regions and the mean relative level of DREAM protein compared to other experimental groups. Treatment with acute nicotine significantly prevented these effects and decreased expression of DREAM protein in all the hippocampus regions but only slightly reduce the mean relative level of DREAM protein. CONCLUSION This study suggests that changes in DREAM protein expression in CA1, CA2, CA3, and DG regions of rat's hippocampus and mean relative level of DREAM protein may involve in the mechanism of nicotine treatment-prevented REM sleep deprivation-induced learning and memory impairment in rats.
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Affiliation(s)
- Norlinda Abd Rashid
- BRAINetwork Centre for Neurocognitive Sciences School of Health Sciences University Sains Malaysia Kubang Kerian Kelantan Malaysia
| | - Hermizi Hapidin
- School of Health Sciences University Sains Malaysia Kubang Kerian Kelantan Malaysia
| | - Hasmah Abdullah
- School of Health Sciences University Sains Malaysia Kubang Kerian Kelantan Malaysia
| | - Zalina Ismail
- BRAINetwork Centre for Neurocognitive Sciences School of Health Sciences University Sains Malaysia Kubang Kerian Kelantan Malaysia
| | - Idris Long
- BRAINetwork Centre for Neurocognitive Sciences School of Health Sciences University Sains Malaysia Kubang Kerian Kelantan Malaysia
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Yin M, Chen Y, Zheng H, Pu T, Marshall C, Wu T, Xiao M. Assessment of mouse cognitive and anxiety-like behaviors and hippocampal inflammation following a repeated and intermittent paradoxical sleep deprivation procedure. Behav Brain Res 2017; 321:69-78. [DOI: 10.1016/j.bbr.2016.12.034] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2016] [Revised: 12/21/2016] [Accepted: 12/25/2016] [Indexed: 12/12/2022]
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Kreutzmann JC, Tudor JC, Angelakos CC, Abel T. The Impact of Sleep Deprivation on Molecular Mechanisms of Memory Consolidation in Rodents. COGNITIVE NEUROSCIENCE OF MEMORY CONSOLIDATION 2017. [DOI: 10.1007/978-3-319-45066-7_5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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23
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Vacas S, Degos V, Maze M. Fragmented Sleep Enhances Postoperative Neuroinflammation but Not Cognitive Dysfunction. Anesth Analg 2017; 124:270-276. [DOI: 10.1213/ane.0000000000001675] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Kloss JD, Nash CO, Walsh CM, Culnan E, Horsey S, Sexton-Radek K. A "Sleep 101" Program for College Students Improves Sleep Hygiene Knowledge and Reduces Maladaptive Beliefs about Sleep. Behav Med 2016; 42:48-56. [PMID: 25268924 DOI: 10.1080/08964289.2014.969186] [Citation(s) in RCA: 44] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
Sensitizing young adults about sleep hygiene knowledge and helpful sleep attitudes may have the potential to instill long-lasting healthy sleep practices. Towards these ends, evaluation of psychoeducational program "Sleep 101" tailored to college students was undertaken. Following two weeks of sleep-log recordings, participants were randomly assigned to a Sleep 101 (experimental) condition or a sleep monitoring (control) condition. The Sleep 101 condition was comprised of two 90-minute workshops aimed to educate students about healthy sleep practices, helpful thoughts about sleep, and ways to improve sleep. The sleep monitoring group received a sleep hygiene handout and completed sleep logs for the study duration. Sleep 101 participants endorsed fewer maladaptive beliefs and attitudes about sleep, increased sleep hygiene knowledge, and reduced sleep onset latency compared to the sleep monitoring participants. Brief psychoeducational courses may be a cost-effective way to alleviate current, and/or prevent future, sleep problems in young adults.
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Effects of methylphenidate on the impairment of spontaneous alternation behavior in mice intermittently deprived of REM sleep. Neurochem Int 2016; 100:128-137. [DOI: 10.1016/j.neuint.2016.09.010] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2016] [Revised: 09/07/2016] [Accepted: 09/09/2016] [Indexed: 01/16/2023]
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Guo L, Guo Z, Luo X, Liang R, Yang S, Ren H, Wang G, Zhen X. Phosphodiesterase 10A inhibition attenuates sleep deprivation-induced deficits in long-term fear memory. Neurosci Lett 2016; 635:44-50. [PMID: 27743798 DOI: 10.1016/j.neulet.2016.10.017] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2016] [Revised: 09/20/2016] [Accepted: 10/10/2016] [Indexed: 12/28/2022]
Abstract
Sleep, particularly rapid eye movement (REM) sleep, is implicated in the consolidation of emotional memories. In the present study, we investigated the protective effects of a phosphodiesterase 10A (PDE10A) inhibitor MP-10 on deficits in long-term fear memory induced by REM sleep deprivation (REM-SD). REM-SD caused deficits in long-term fear memory, however, MP-10 administration ameliorated the deleterious effects of REM-SD on long term fear memory. Brain-derived neurotropic factor (BDNF) and phosphorylated cAMP response element-binding protein (pCREB) were altered in specific brain regions associated with learning and memory in REM-SD rats. Accordingly, REM-SD caused a significant decrease of pCREB in hippocampus and striatum and a significant decrease of BDNF in the hippocampus, striatum and amygdala, however, MP-10 reversed the effects of REM-SD in a dose-dependent manner. Our findings suggest that REM-SD disrupts the consolidation of long-term fear memory and that administration of MP-10 protects the REM-SD-induced deficits in fear memory, which may be due to the MP-10-induced expression of BDNF in the hippocampus, striatum and amygdala, and phosphorylation of CREB in the hippocampus and striatum.
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Affiliation(s)
- Lengqiu Guo
- Jiangsu Key Laboratory of Translational Research and Therapy for Neuropsychiatric Disorders & Department of Pharmacology, College of Pharmaceutical Sciences, Soochow University, 199 Ren'ai Road, Suzhou, Jiangsu 215123, China; College of Pharmaceutical Sciences, Suzhou Health College, 28 Kehua Road, Suzhou, Jiangsu 215009, China
| | - Zhuangli Guo
- Department of Rehabilitation Medicine, The Affiliated Hospital of Qingdao University, 16 Jiangsu Road,Qingdao, Shandong 266003, China
| | - Xiaoqing Luo
- College of Pharmaceutical Sciences, Suzhou Health College, 28 Kehua Road, Suzhou, Jiangsu 215009, China
| | - Rui Liang
- College of Pharmaceutical Sciences, Suzhou Health College, 28 Kehua Road, Suzhou, Jiangsu 215009, China
| | - Shui Yang
- College of Pharmaceutical Sciences, Suzhou Health College, 28 Kehua Road, Suzhou, Jiangsu 215009, China
| | - Haigang Ren
- College of Pharmaceutical Sciences, Suzhou Health College, 28 Kehua Road, Suzhou, Jiangsu 215009, China
| | - Guanghui Wang
- Jiangsu Key Laboratory of Translational Research and Therapy for Neuropsychiatric Disorders & Department of Pharmacology, College of Pharmaceutical Sciences, Soochow University, 199 Ren'ai Road, Suzhou, Jiangsu 215123, China.
| | - Xuechu Zhen
- Jiangsu Key Laboratory of Translational Research and Therapy for Neuropsychiatric Disorders & Department of Pharmacology, College of Pharmaceutical Sciences, Soochow University, 199 Ren'ai Road, Suzhou, Jiangsu 215123, China.
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Prophylactic Role of Oral Melatonin Administration on Neurogenesis in Adult Balb/C Mice during REM Sleep Deprivation. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2016; 2016:2136902. [PMID: 27579149 PMCID: PMC4992538 DOI: 10.1155/2016/2136902] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/06/2016] [Revised: 06/10/2016] [Accepted: 06/20/2016] [Indexed: 12/17/2022]
Abstract
Purpose. The aim of this study was to assess the effect of melatonin in the proliferation of neural progenitors, melatonin concentration, and antiapoptotic proteins in the hippocampus of adult mice exposed to 96 h REM sleep deprivation (REMSD) prophylactic administration of melatonin for 14 days. Material and Methods. Five groups of Balb/C mice were used: (1) control, (2) REMSD, (3) melatonin (10 mg/kg) plus REMSD, (4) melatonin and intraperitoneal luzindole (once a day at 5 mg/kg) plus REMSD, and (5) luzindole plus REMSD. To measure melatonin content in hippocampal tissue we used HPLC. Bcl-2 and Bcl-xL proteins were measured by Western Blot and neurogenesis was determined by injecting 5-bromo-2-deoxyuridine (BrdU) and BrdU/nestin expressing cells in the subgranular zone of the dentate gyrus were quantified by epifluorescence. Results. The melatonin-treated REMSD group showed an increased neural precursor in 44% with respect to the REMSD group and in 28% when contrasted with the control group (P < 0.021). The melatonin-treated REMSD group also showed the highest expression of Bcl-2 and Bcl-xL as compared to the rest of the groups. Conclusion. The exogenous administration of melatonin restores the tissue levels of sleep-deprived group and appears to be an efficient neuroprotective agent against the deleterious effects of REMSD.
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28
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Soto-Rodriguez S, Lopez-Armas G, Luquin S, Ramos-Zuñiga R, Jauregui-Huerta F, Gonzalez-Perez O, Gonzalez-Castañeda RE. Rapid Eye Movement Sleep Deprivation Produces Long-Term Detrimental Effects in Spatial Memory and Modifies the Cellular Composition of the Subgranular Zone. Front Cell Neurosci 2016; 10:132. [PMID: 27303266 PMCID: PMC4884737 DOI: 10.3389/fncel.2016.00132] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2016] [Accepted: 04/29/2016] [Indexed: 11/13/2022] Open
Abstract
Sleep deprivation (SD) affects spatial memory and proliferation in the dentate gyrus. It is unknown whether these deleterious effects persist in the long run. The aim of this study was to evaluate the proliferation, differentiation and maturation of neural progenitors as well as spatial memory 21 days after suffering SD. Sixty-day old male Balb/C mice were exposed to 72-h REM-SD. Spatial memory, cell fate, apoptosis and expression levels of insulin-like growth factor 1 receptor (IGF-1R) were evaluated in the hippocampus at 0, 14, and 21 days after SD or control conditions. After 21-days recovery period, memory performance was assessed with the Barnes maze, we found a significant memory impairment in SD mice vs. control (94.0 ± 10.2 s vs. 25.2 ± 4.5 s; p < 0.001). The number of BrdU+ cells was significantly decreased in the SD groups at day 14 (controls = 1.6 ± 0.1 vs. SD mice = 1.2 ± 0.1 cells/field; p = 0.001) and at day 21 (controls = 0.2 ± 0.03 vs. SD mice = 0.1 ± 0.02 cells/field; p < 0.001). A statistically significant decrease was observed in neuronal differentiation (1.4 ± 0.1 cells/field vs. 0.9 ± 0.1 cells/field, p = 0.003). Apoptosis was significantly increased at day 14 after SD (0.53 ± 0.06 TUNEL+ cells/field) compared to controls (0.19 ± 0.03 TUNEL+ cells/field p < 0.001) and at 21-days after SD (SD mice 0.53 ± 0.15 TUNEL+ cells/field; p = 0.035). At day 0, IGF-1R expression showed a statistically significant reduction in SD animals (64.6 ± 12.2 units) when compared to the control group (102.0 ± 9.8 units; p = 0.043). However, no statistically significant differences were found at days 14 and 21 after SD. In conclusion, a single exposition to SD for 72-h can induce deleterious effects that persist for at least 3 weeks. These changes are characterized by spatial memory impairment, reduction in the number of hippocampal BrdU+ cells and persistent apoptosis rate. In contrast, changes IGF-1R expression appears to be a transient event. Highlight Sleep deprivation affects spatial memory and proliferation in the dentate gyrus. To date it is unknown whether these deleterious effects are persistent over a long period of time. We analyzed the effects of sleep deprivation in the hippocampus after 21 days of recovery sleep. Our findings indicate that after sleep recovery, the detrimental effects of SD can be observed for at least 2 weeks, as shown by a reduction in memory performance, changes in the hippocampal cellular composition and higher apoptotic rate over a long period of time.
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Affiliation(s)
- Sofia Soto-Rodriguez
- Laboratorio de Microscopía de Alta Resolución, Departamento de Neurociencias, Centro Universitario de Ciencias de la Salud, Universidad de Guadalajara Guadalajara, México
| | - Gabriela Lopez-Armas
- Laboratorio de Microscopía de Alta Resolución, Departamento de Neurociencias, Centro Universitario de Ciencias de la Salud, Universidad de GuadalajaraGuadalajara, México; Centro de Enseñanza Técnica IndustrialZapopan, Mexico
| | - Sonia Luquin
- Laboratorio de Microscopía de Alta Resolución, Departamento de Neurociencias, Centro Universitario de Ciencias de la Salud, Universidad de Guadalajara Guadalajara, México
| | - Rodrigo Ramos-Zuñiga
- Laboratorio de Microscopía de Alta Resolución, Departamento de Neurociencias, Centro Universitario de Ciencias de la Salud, Universidad de Guadalajara Guadalajara, México
| | - Fernando Jauregui-Huerta
- Laboratorio de Microscopía de Alta Resolución, Departamento de Neurociencias, Centro Universitario de Ciencias de la Salud, Universidad de Guadalajara Guadalajara, México
| | - Oscar Gonzalez-Perez
- Laboratorio de Neurociencias, Facultad de Psicología, Universidad de Colima Colima, México
| | - Rocio E Gonzalez-Castañeda
- Laboratorio de Microscopía de Alta Resolución, Departamento de Neurociencias, Centro Universitario de Ciencias de la Salud, Universidad de GuadalajaraGuadalajara, México; Departamento de Ciencias Básicas del Área de la Salud, División de Biotecnología y Salud, Tecnológico de Monterrey, Campus GuadalajaraZapopan, Mexico
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Xie F, Li X, Bao M, Shi R, Yue Y, Guan Y, Wang Y. Anesthetic propofol normalized the increased release of glutamate and γ-amino butyric acid in hippocampus after paradoxical sleep deprivation in rats. Neurol Res 2016; 37:1102-7. [PMID: 26923580 DOI: 10.1080/01616412.2015.1114231] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- Fang Xie
- Department of Anesthesiology, Beijing Chaoyang Hospital, Capital Medical University, Beijing 100020, China
| | - Xueyang Li
- Department of Anesthesiology, Beijing Chaoyang Hospital, Capital Medical University, Beijing 100020, China
| | - Mengmeng Bao
- Department of Anesthesiology, Beijing Chaoyang Hospital, Capital Medical University, Beijing 100020, China
| | - Rong Shi
- Department of Anesthesiology, Beijing Chaoyang Hospital, Capital Medical University, Beijing 100020, China
| | - Yun Yue
- Department of Anesthesiology, Beijing Chaoyang Hospital, Capital Medical University, Beijing 100020, China
| | - Yun Guan
- Department of Anesthesiology and Critical Care Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland 21205, USA
| | - Yun Wang
- Department of Anesthesiology, Beijing Chaoyang Hospital, Capital Medical University, Beijing 100020, China
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Alkadhi KA, Alhaider IA. Caffeine and REM sleep deprivation: Effect on basal levels of signaling molecules in area CA1. Mol Cell Neurosci 2016; 71:125-31. [DOI: 10.1016/j.mcn.2015.12.015] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2015] [Revised: 12/16/2015] [Accepted: 12/31/2015] [Indexed: 01/19/2023] Open
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Wrede JE, Mengel-From J, Buchwald D, Vitiello MV, Bamshad M, Noonan C, Christiansen L, Christensen K, Watson NF. Mitochondrial DNA Copy Number in Sleep Duration Discordant Monozygotic Twins. Sleep 2015; 38:1655-8. [PMID: 26039967 DOI: 10.5665/sleep.5068] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2014] [Accepted: 04/04/2015] [Indexed: 11/03/2022] Open
Abstract
STUDY OBJECTIVES Mitochondrial DNA (mtDNA) copy number is an important component of mitochondrial function and varies with age, disease, and environmental factors. We aimed to determine whether mtDNA copy number varies with habitual differences in sleep duration within pairs of monozygotic twins. SETTING Academic clinical research center. PARTICIPANTS 15 sleep duration discordant monozygotic twin pairs (30 twins, 80% female; mean age 42.1 years [SD 15.0]). DESIGN Sleep duration was phenotyped with wrist actigraphy. Each twin pair included a "normal" (7-9 h/24) and "short" (< 7 h/24) sleeping twin. Fasting peripheral blood leukocyte DNA was assessed for mtDNA copy number via the n-fold difference between qPCR measured mtDNA and nuclear DNA creating an mtDNA measure without absolute units. We used generalized estimating equation linear regression models accounting for the correlated data structure to assess within-pair effects of sleep duration on mtDNA copy number. MEASUREMENTS AND RESULTS Mean within-pair sleep duration difference per 24 hours was 94.3 minutes (SD 62.6 min). We found reduced sleep duration (β = 0.06; 95% CI 0.004, 0.12; P < 0.05) and sleep efficiency (β = 0.51; 95% CI 0.06, 0.95; P < 0.05) were significantly associated with reduced mtDNA copy number within twin pairs. Thus every 1-minute decrease in actigraphy-defined sleep duration was associated with a decrease in mtDNA copy number of 0.06. Likewise, a 1% decrease in actigraphy-defined sleep efficiency was associated with a decrease in mtDNA copy number of 0.51. CONCLUSIONS Reduced sleep duration and sleep efficiency were associated with reduced mitochondrial DNA copy number in sleep duration discordant monozygotic twins offering a potential mechanism whereby short sleep impairs health and longevity through mitochondrial stress.
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Affiliation(s)
- Joanna E Wrede
- Department of Neurology, University of Washington, Seattle, WA.,Department of Pediatrics, University of Washington, Seattle, WA
| | - Jonas Mengel-From
- The Danish Aging Research Center and The Danish Twin Registry, Epidemiology Unit, Institute of Public Health, University of Southern Denmark, Odense, Denmark.,Department of Clinical Genetics, Odense University Hospital, Odense, Denmark
| | - Dedra Buchwald
- Departments of Epidemiology and Medicine, University of Washington, Seattle, WA.,University of Washington Twin Registry, Seattle, WA
| | - Michael V Vitiello
- Psychiatry and Behavioral Sciences, University of Washington, Seattle, WA.,Center for Research on the Management of Sleep Disturbances, University of Washington, Seattle, WA
| | - Michael Bamshad
- Department of Pediatrics, University of Washington, Seattle, WA
| | - Carolyn Noonan
- Departments of Epidemiology and Medicine, University of Washington, Seattle, WA.,University of Washington Twin Registry, Seattle, WA
| | - Lene Christiansen
- The Danish Aging Research Center and The Danish Twin Registry, Epidemiology Unit, Institute of Public Health, University of Southern Denmark, Odense, Denmark
| | - Kaare Christensen
- The Danish Aging Research Center and The Danish Twin Registry, Epidemiology Unit, Institute of Public Health, University of Southern Denmark, Odense, Denmark.,Department of Clinical Genetics, Odense University Hospital, Odense, Denmark.,Department of Clinical Biochemistry and Pharmacology, Odense University Hospital, Odense, Denmark
| | - Nathaniel F Watson
- Department of Neurology, University of Washington, Seattle, WA.,University of Washington Twin Registry, Seattle, WA.,Center for Research on the Management of Sleep Disturbances, University of Washington, Seattle, WA
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Onaolapo OJ, Onaolapo AY, Akanmu MA, Olayiwola G. Caffeine/sleep-deprivation interaction in mice produces complex memory effects. Ann Neurosci 2015; 22:139-49. [PMID: 26130922 PMCID: PMC4481547 DOI: 10.5214/ans.0972.7531.220304] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2014] [Revised: 01/23/2015] [Accepted: 02/12/2015] [Indexed: 12/04/2022] Open
Abstract
BACKGROUND Sleep deprivation negatively impacts memory, causing deficits in memory processes. Of interest is any agent that can offset such deficits. Mice were given varying doses of caffeine for 14 days and then deprived of sleep for 6 hours by the 'gentle handling' method. Memory was assessed using the Novel Object Recognition Test and Y maze alternation. PURPOSE The study was designed to ascertain the impact of varying doses of caffeine combined with total sleep-deprivation on spatial and non spatial memory in mice. METHODS Adult Swiss Webster mice of both sexes were assigned to six groups viz., vehicle (distilled water), or one of five selected doses of caffeine (10, 20, 40, 80 and 120 mg/kg) for 14 days via the oral route. Open field novel object recognition test and Y maze spatial working memory tests were carried out on day 14. Results were analysed using multi-factorial ANOVA followed by Tukey HSD test and expressed as mean ± S.E.M, with p values less than 0.05 were considered statistically significant. RESULTS Novel object recognition tests (NOR) revealed that pre-training and pre-test sleep deprivation and caffeine combination impaired non spatial and spatial memory in male and female mice. CONCLUSION The study shows the complex interactions with memory that may arise when total sleep deprivation is superimposed on caffeine administration.
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Affiliation(s)
- Olakunle J Onaolapo
- Department of Pharmacology, Faculty of Basic Medical Sciences, College of Health Sciences, Ladoke Akintola University of Technology, Oshogbo, Osun State, Nigeria
| | - Adejoke Y Onaolapo
- Department of Human Anatomy, Faculty of Basic Medical Sciences, College of Health Sciences, Ladoke Akintola University of Technology, Ogbomosho, Oyo State, Nigeria
| | - Moses A Akanmu
- Department of Pharmacology, Faculty of Pharmacy, Obafemi Awolowo University, Ile- Ife, Osun State, Nigeria
| | - Gbola Olayiwola
- Department of Clinical Pharmacy and Pharmacy Administration, Faculty of Pharmacy, Obafemi Awolowo University, Ile- Ife, Osun State, Nigeria
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Kreutzmann JC, Havekes R, Abel T, Meerlo P. Sleep deprivation and hippocampal vulnerability: changes in neuronal plasticity, neurogenesis and cognitive function. Neuroscience 2015; 309:173-90. [PMID: 25937398 DOI: 10.1016/j.neuroscience.2015.04.053] [Citation(s) in RCA: 192] [Impact Index Per Article: 21.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2015] [Revised: 03/31/2015] [Accepted: 04/21/2015] [Indexed: 01/19/2023]
Abstract
Despite the ongoing fundamental controversy about the physiological function of sleep, there is general consensus that sleep benefits neuronal plasticity, which ultimately supports brain function and cognition. In agreement with this are numerous studies showing that sleep deprivation (SD) results in learning and memory impairments. Interestingly, such impairments appear to occur particularly when these learning and memory processes require the hippocampus, suggesting that this brain region may be particularly sensitive to the consequences of sleep loss. Although the molecular mechanisms underlying sleep and memory formation remain to be investigated, available evidence suggests that SD may impair hippocampal neuronal plasticity and memory processes by attenuating intracellular cyclic adenosine monophosphate (cAMP)-protein kinase A (PKA) signaling which may lead to alterations in cAMP response element binding protein (CREB)-mediated gene transcription, neurotrophic signaling, and glutamate receptor expression. When restricted sleep becomes a chronic condition, it causes a reduction of hippocampal cell proliferation and neurogenesis, which may eventually lead to a reduction in hippocampal volume. Ultimately, by impairing hippocampal plasticity and function, chronically restricted and disrupted sleep contributes to cognitive disorders and psychiatric diseases.
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Affiliation(s)
- J C Kreutzmann
- Center for Behavior and Neurosciences, University of Groningen, The Netherlands; Department of Biology, University of Pennsylvania, Philadelphia, United States
| | - R Havekes
- Department of Biology, University of Pennsylvania, Philadelphia, United States
| | - T Abel
- Department of Biology, University of Pennsylvania, Philadelphia, United States
| | - P Meerlo
- Center for Behavior and Neurosciences, University of Groningen, The Netherlands.
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Zagaar MA, Dao AT, Alhaider IA, Alkadhi KA. Prevention by Regular Exercise of Acute Sleep Deprivation-Induced Impairment of Late Phase LTP and Related Signaling Molecules in the Dentate Gyrus. Mol Neurobiol 2015; 53:2900-2910. [PMID: 25902862 DOI: 10.1007/s12035-015-9176-4] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2015] [Accepted: 04/13/2015] [Indexed: 01/12/2023]
Abstract
The dentate gyrus (DG) and CA1 regions of the hippocampus are intimately related physically and functionally, yet they react differently to insults. The purpose of this study was to determine the protective effects of regular treadmill exercise on late phase long-term potentiation (L-LTP) and its signaling cascade in the DG region of the hippocampus of rapid eye movement (REM) sleep-deprived rats. Adult Wistar rats ran on treadmills for 4 weeks then were acutely sleep deprived for 24 h using the modified multiple platform method. After sleep deprivation, the rats were anesthetized and L-LTP was induced in the DG region. Extracellular field potentials from the DG were recorded in vivo, and levels of L-LTP-related signaling proteins were assessed both before and after L-LTP expression using immunoblot analysis. Sleep deprivation reduced the basal levels of phosphorylated cAMP response element-binding protein (P-CREB) as well as other upstream modulators including calcium/calmodulin kinase IV (CaMKIV) and brain-derived neurotrophic factor (BDNF) in the DG of the hippocampus. Regular exercise prevented impairment of the basal levels of P-CREB and total CREB as well as those of CaMKIV in sleep-deprived animals. Furthermore, regular exercise prevented sleep deprivation-induced inhibition of L-LTP and post-L-LTP downregulation of P-CREB and BDNF levels in the DG. The current findings show that our exercise regimen prevents sleep deprivation-induced deficits in L-LTP as well as the basal and poststimulation levels of key signaling molecules.
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Affiliation(s)
- Munder A Zagaar
- Departmentof Pharmacological and Pharmaceutical Sciences, University of Houston, Houston, TX, USA
| | - An T Dao
- Departmentof Pharmacological and Pharmaceutical Sciences, University of Houston, Houston, TX, USA
| | - Ibrahim A Alhaider
- College of Clinical Pharmacy, King Faisal University, Al-Hofuf, Saudi Arabia
| | - Karim A Alkadhi
- Departmentof Pharmacological and Pharmaceutical Sciences, University of Houston, Houston, TX, USA.
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Effects of Mood Stabilizers on Brain Energy Metabolism in Mice Submitted to an Animal Model of Mania Induced by Paradoxical Sleep Deprivation. Neurochem Res 2015; 40:1144-52. [PMID: 25894682 DOI: 10.1007/s11064-015-1575-4] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2014] [Revised: 03/23/2015] [Accepted: 04/06/2015] [Indexed: 12/17/2022]
Abstract
There is a body of evidence suggesting that mitochondrial dysfunction is involved in bipolar disorder (BD) pathogenesis. Studies suggest that abnormalities in circadian cycles are involved in the pathophysiology of affective disorders; paradoxical sleep deprivation (PSD) induces hyperlocomotion in mice. Thus, the present study aims to investigate the effects of lithium (Li) and valproate (VPA) in an animal model of mania induced by PSD for 96 h. PSD increased exploratory activity, and mood stabilizers prevented PSD-induced behavioral effects. PSD also induced a significant decrease in the activity of complex II-III in hippocampus and striatum; complex IV activity was decreased in prefrontal cortex, cerebellum, hippocampus, striatum and cerebral cortex. Additionally, VPA administration was able to prevent PSD-induced inhibition of complex II-III and IV activities in prefrontal cortex, cerebellum, hippocampus, striatum and cerebral cortex, whereas Li administration prevented PSD-induced inhibition only in prefrontal cortex and hippocampus. Regarding the enzymes of Krebs cycle, only citrate synthase activity was increased by PSD in prefrontal cortex. We also found a similar effect in creatine kinase, an important enzyme that acts in the buffering of ATP levels in brain; its activity was increased in prefrontal cortex, hippocampus and cerebral cortex. These results are consistent with the connection of mitochondrial dysfunction and hyperactivity in BD and suggest that the present model fulfills adequate face, construct and predictive validity as an animal model of mania.
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Havekes R, Meerlo P, Abel T. Animal studies on the role of sleep in memory: from behavioral performance to molecular mechanisms. Curr Top Behav Neurosci 2015; 25:183-206. [PMID: 25680961 DOI: 10.1007/7854_2015_369] [Citation(s) in RCA: 49] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Although the exact functions of sleep remain a topic of debate, several hypotheses propose that sleep benefits neuronal plasticity, which ultimately supports brain function and cognition . For over a century, researchers have applied a wide variety of behavioral, electrophysiological, biochemical, and molecular approaches to study how memory processes are promoted by sleep and perturbed by sleep loss. Interestingly, experimental studies indicate that cognitive impairments as a consequence of sleep deprivation appear to be most severe with learning and memory processes that require the hippocampus , which suggests that this brain region is particularly sensitive to the consequences of sleep loss. Moreover, recent studies in laboratory rodents indicate that sleep deprivation impairs hippocampal neuronal plasticity and memory processes by attenuating intracellular cyclic adenosine monophosphate (cAMP)-protein kinase A (PKA) signaling. Attenuated cAMP-PKA signaling can lead to a reduced activity of the transcription factor cAMP response element binding protein (CREB) and ultimately affect the expression of genes and proteins involved in neuronal plasticity and memory formation. Pharmacogenetic experiments in mice show that memory deficits following sleep deprivation can be prevented by specifically boosting cAMP signaling in excitatory neurons of the hippocampus. Given the high incidence of sleep disturbance and sleep restriction in our 24/7 society, understanding the consequences of sleep loss and unraveling the underlying molecular mechanisms is of great importance.
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Affiliation(s)
- Robbert Havekes
- Department of Biology, 10-170 Smilow Center for Translational Research, University of Pennsylvania, 3400 Civic Center Blvd Bldg 421, Philadelphia, PA, 19104-5158, USA,
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Notoginsenoside R1 increases neuronal excitability and ameliorates synaptic and memory dysfunction following amyloid elevation. Sci Rep 2014; 4:6352. [PMID: 25213453 PMCID: PMC4161968 DOI: 10.1038/srep06352] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2014] [Accepted: 08/26/2014] [Indexed: 11/17/2022] Open
Abstract
Neurodegeneration and synaptic dysfunction observed in Alzheimer's disease (AD) have been associated with progressive decrease in neuronal activity. Here, we investigated the effects of Notoginsenoside R1 (NTR1), a major saponin isolated from Panax notoginseng, on neuronal excitability and assessed the beneficial effects of NTR1 on synaptic and memory deficits under the Aβ-enriched conditions in vivo and in vitro. We assessed the effects of NTR1 on neuronal excitability, membrane ion channel activity, and synaptic plasticity in acute hippocampal slices by combining electrophysiological extracellular and intracellular recording techniques. We found that NTR1 increased the membrane excitability of CA1 pyramidal neurons in hippocampal slices by lowering the spike threshold possibly through a mechanism involving in the inhibition of voltage-gated K+ currents. In addition, NTR1 reversed Aβ1-42 oligomers-induced impairments in long term potentiation (LTP). Reducing spontaneous firing activity with 10 nM tetrodotoxin (TTX) abolished the protective effect of NTR1 against Aβ-induced LTP impairment. Finally, oral administration of NTR1 improved the learning performance of the APP/PS1 mouse model of AD. Our work reveals a novel mechanism involving in modulation of cell strength, which contributes to the protective effects of NTR1 against Aβ neurotoxicity.
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Alger SE, Chambers AM, Cunningham T, Payne JD. The role of sleep in human declarative memory consolidation. Curr Top Behav Neurosci 2014; 25:269-306. [PMID: 25227928 DOI: 10.1007/7854_2014_341] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Through a variety of methods, researchers have begun unraveling the mystery of why humans spend one-third of their lives asleep. Though sleep likely serves multiple functions, it has become clear that the sleeping brain offers an ideal environment for solidifying newly learned information in the brain. Sleep , which comprises a complex collection of brain states, supports the consolidation of many different types of information. It not only promotes learning and memory stabilization, but also memory reorganization that can lead to various forms of insightful behavior. As this chapter will describe, research provides ample support for these crucial cognitive functions of sleep . Focusing on the declarative memory system in humans, we review the literature regarding the benefits of sleep for both neutral and emotionally salient declarative memory. Finally, we discuss the literature regarding the impact of sleep on emotion regulation.
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Affiliation(s)
- Sara E Alger
- Department of Psychology, University of Notre Dame, Notre Dame, USA,
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Colavito V, Fabene PF, Grassi-Zucconi G, Pifferi F, Lamberty Y, Bentivoglio M, Bertini G. Experimental sleep deprivation as a tool to test memory deficits in rodents. Front Syst Neurosci 2013; 7:106. [PMID: 24379759 PMCID: PMC3861693 DOI: 10.3389/fnsys.2013.00106] [Citation(s) in RCA: 72] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2013] [Accepted: 11/21/2013] [Indexed: 12/19/2022] Open
Abstract
Paradigms of sleep deprivation (SD) and memory testing in rodents (laboratory rats and mice) are here reviewed. The vast majority of these studies have been aimed at understanding the contribution of sleep to cognition, and in particular to memory. Relatively little attention, instead, has been devoted to SD as a challenge to induce a transient memory impairment, and therefore as a tool to test cognitive enhancers in drug discovery. Studies that have accurately described methodological aspects of the SD protocol are first reviewed, followed by procedures to investigate SD-induced impairment of learning and memory consolidation in order to propose SD protocols that could be employed as cognitive challenge. Thus, a platform of knowledge is provided for laboratory protocols that could be used to assess the efficacy of drugs designed to improve memory performance in rodents, including rodent models of neurodegenerative diseases that cause cognitive deficits, and Alzheimer's disease in particular. Issues in the interpretation of such preclinical data and their predictive value for clinical translation are also discussed.
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Affiliation(s)
- Valeria Colavito
- Department of Neurological and Movement Sciences, University of Verona Verona, Italy
| | - Paolo F Fabene
- Department of Neurological and Movement Sciences, University of Verona Verona, Italy
| | | | - Fabien Pifferi
- Mécanismes Adaptatifs et Evolution, UMR 7179 Centre National de la Recherche Scientifique, Muséum National d'Histoire Naturelle Brunoy, France
| | - Yves Lamberty
- Neuroscience Therapeutic Area, UCB Pharma s.a. Braine l'Alleud, Belgium
| | - Marina Bentivoglio
- Department of Neurological and Movement Sciences, University of Verona Verona, Italy
| | - Giuseppe Bertini
- Department of Neurological and Movement Sciences, University of Verona Verona, Italy
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Zagaar M, Dao A, Alhaider I, Alkadhi K. Regular treadmill exercise prevents sleep deprivation-induced disruption of synaptic plasticity and associated signaling cascade in the dentate gyrus. Mol Cell Neurosci 2013; 56:375-83. [PMID: 23911794 DOI: 10.1016/j.mcn.2013.07.011] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2013] [Revised: 07/05/2013] [Accepted: 07/24/2013] [Indexed: 12/21/2022] Open
Abstract
STUDY OBJECTIVES Evidence suggests that regular exercise can protect against learning and memory impairment in the presence of insults such as sleep deprivation. The dentate gyrus (DG) area of the hippocampus is a key staging area for learning and memory processes and is particularly sensitive to sleep deprivation. The purpose of this study was to determine the effect of regular exercise on early-phase long-term potentiation (E-LTP) and its signaling cascade in the presence of sleep deprivation. EXPERIMENTAL DESIGN Rats were exposed to 4 weeks of regular treadmill exercise then subsequently sleep-deprived for 24h using the modified multiple platform model before experimentation. We tested the effects of exercise and/or sleep deprivation using electrophysiological recording in the DG to measure synaptic plasticity; and Western blot analysis to quantify the levels of key signaling proteins related to E-LTP. MEASUREMENTS AND RESULTS Regular exercise prevented the sleep deprivation-induced impairment of E-LTP in the DG area as well as the sleep deprivation-associated decrease in basal protein levels of phosphorylated and total α calcium/calmodulin-dependent protein kinase II (P/total-CaMKII) and brain-derived neurotrophic factor (BDNF). High frequency stimulation (HFS) to the DG area was used to model learning stimuli and increased the P-CaMKII and BDNF levels in normal animals: yet failed to change these levels in sleep-deprived rats. However, HFS in control and sleep-deprived rats increased the levels of the phosphatase calcineurin. In contrast, exercise increased BDNF and P-CaMKII levels in exercised/sleep-deprived rats. CONCLUSIONS Regular exercise appears to exert a protective effect against sleep deprivation-induced spatial memory impairment by inducing hippocampal signaling cascades that positively modulate basal and stimulated levels of key effectors such as P-CaMKII and BDNF, while attenuating increases in the protein phosphatase calcineurin.
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Affiliation(s)
- Munder Zagaar
- Department of Pharmacological and Pharmaceutical Sciences, University of Houston, TX, USA
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Zagaar M, Dao A, Levine A, Alhaider I, Alkadhi K. Regular exercise prevents sleep deprivation associated impairment of long-term memory and synaptic plasticity in the CA1 area of the hippocampus. Sleep 2013; 36:751-61. [PMID: 23633758 DOI: 10.5665/sleep.2642] [Citation(s) in RCA: 63] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
STUDY OBJECTIVES The present study aimed to investigate the effects of treadmill exercise on sleep deprivation (S-D)-induced impairment of hippocampal dependent long-term memory, late phase long-term potentiation (L-LTP) and its signaling cascade in the cornu ammonis 1 (CA1) area. EXPERIMENTAL DESIGN Animals were conditioned to run on treadmills for 4 weeks then deprived of sleep for 24 h using the columns-in-water method. We tested the effect of exercise and/or S-D on behavioral performance using a post-learning paradigm in the radial arm water maze (RAWM) and in vivo extracellular recording in the CA1 area. The levels of L-LTP-related molecules in the CA1 area were then assessed both before and after L-LTP induction. MEASUREMENTS AND RESULTS After 24 h of S-D, spatial long-term memory impairment in the RAWM and L-LTP suppression was prevented by 4 weeks of regular exercise. Regular exercise also restored the S-D-associated decreases in the basal levels of key signaling molecules such as: calcium/calmodulin kinase IV (CaMKIV), mitogen-activated protein kinase (MAPK/ERK), phosphorylated cAMP response element-binding protein (P-CREB) and brain derived neurotrophic factor (BDNF), in the CA1 area. After L-LTP induction, regular exercise also prevented the S-D-induced down regulation of BDNF and P-CREB protein levels. CONCLUSIONS The results suggest that our exercise protocol may prevent 24-h S-D-induced impairments in long-term memory and LTP by preventing deleterious changes in the basal and post-stimulation levels of P-CREB and BDNF associated with S-D.
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Affiliation(s)
- Munder Zagaar
- Department of Pharmacological and Pharmaceutical Sciences, University of Houston, TX
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Alkadhi K, Zagaar M, Alhaider I, Salim S, Aleisa A. Neurobiological consequences of sleep deprivation. Curr Neuropharmacol 2013; 11:231-49. [PMID: 24179461 PMCID: PMC3648777 DOI: 10.2174/1570159x11311030001] [Citation(s) in RCA: 67] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2012] [Revised: 01/15/2013] [Accepted: 02/02/2013] [Indexed: 01/30/2023] Open
Abstract
Although the physiological function of sleep is not completely understood, it is well documented that it contributes significantly to the process of learning and memory. Ample evidence suggests that adequate sleep is essential for fostering connections among neuronal networks for memory consolidation in the hippocampus. Sleep deprivation studies are extremely valuable in understanding why we sleep and what are the consequences of sleep loss. Experimental sleep deprivation in animals allows us to gain insight into the mechanism of sleep at levels not possible to study in human subjects. Many useful approaches have been utilized to evaluate the effect of sleep loss on cognitive function, each with relative advantages and disadvantages. In this review we discuss sleep and the detrimental effects of sleep deprivation mostly in experimental animals. The negative effects of sleep deprivation on various aspects of brain function including learning and memory, synaptic plasticity and the state of cognition-related signaling molecules are discussed.
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Affiliation(s)
- Karim Alkadhi
- Department of Pharmacological and Pharmaceutical Sciences, University of Houston, Texas, USA
| | - Munder Zagaar
- Department of Pharmacological and Pharmaceutical Sciences, University of Houston, Texas, USA
| | - Ibrahim Alhaider
- College of Clinical Pharmacy, King Faisal University, Al-Hofuf, Kingdom of Saudi Arabia
| | - Samina Salim
- Department of Pharmacological and Pharmaceutical Sciences, University of Houston, Texas, USA
| | - Abdulaziz Aleisa
- Department of Pharmacology, College of Pharmacy, King Saud University, Riyadh, Saudi Arabia
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Bridoux A, Laloux C, Derambure P, Bordet R, Monaca Charley C. The acute inhibition of rapid eye movement sleep by citalopram may impair spatial learning and passive avoidance in mice. J Neural Transm (Vienna) 2012; 120:383-9. [DOI: 10.1007/s00702-012-0901-0] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2012] [Accepted: 09/23/2012] [Indexed: 01/26/2023]
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Xu RX, Grigoryev N, Li TL, Bian HS, Zhang R, Liu XY. Development of hexagonal maze procedure for evaluating memory in rat. Biomed Rep 2012; 1:134-138. [PMID: 24648909 DOI: 10.3892/br.2012.16] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2012] [Accepted: 09/26/2012] [Indexed: 11/06/2022] Open
Abstract
Memory is known as a series of behavioral changes caused by an experience, while learning is a process for acquiring memory. In the present study, we suggested a new method (hexagonal maze) to evaluate the learning and memory of rats. For preliminary validation, the authors used the maze to carry out two classical experiments. At first, the performance of rats of various ages was observed in the maze. Additionally, after establishing the rapid eye movement (REM) sleep deprivation model using the modified multiple platform method (MMPM), the authors also utilized a new experimental device to analyze learning and memory responses to REM sleep deprivation in rats. Behavior of the rats in the maze was recorded by a video recorder and was then quantified. According to the behavioral characteristics, rats of various ages showed differences in memory. Middle-aged male rats exhibited a higher level compared to the young (P<0.05) and the old group (P<0.01). The results also indicated that the ability of learning and memory showed a significant decrease (P<0.05) after REM sleep deprivation. These findings were consistent with those of several similar studies using one of the adopted procedures (Morris water maze, radial arm maze and the Y-maze). Based on the above-mentioned preliminary experiments, the introduction of a hexagonal maze may provide an applicable method for analyzing learning and memory of rat.
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Affiliation(s)
- Rui-Xin Xu
- Department of Pharmaceutical Sciences, Heilongjiang University of Chinese Medicine, Harbin 150040, P.R. China
| | - Nikolay Grigoryev
- Department of Physiology, Amur State Medical Academy, Blagoveschensk 675000, Russia
| | - Ting-Li Li
- Department of Pharmaceutical Sciences, Heilongjiang University of Chinese Medicine, Harbin 150040, P.R. China
| | - Hong-Sheng Bian
- Department of Pharmaceutical Sciences, Heilongjiang University of Chinese Medicine, Harbin 150040, P.R. China
| | - Ru Zhang
- Department of Pharmaceutical Sciences, Heilongjiang University of Chinese Medicine, Harbin 150040, P.R. China
| | - Xiao-Yan Liu
- Department of Pharmaceutical Sciences, Heilongjiang University of Chinese Medicine, Harbin 150040, P.R. China
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Lungato L, Gazarini ML, Paredes-Gamero EJ, Tersariol ILS, Tufik S, D'Almeida V. Sleep deprivation impairs calcium signaling in mouse splenocytes and leads to a decreased immune response. Biochim Biophys Acta Gen Subj 2012; 1820:1997-2006. [PMID: 23000491 DOI: 10.1016/j.bbagen.2012.09.010] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2012] [Revised: 08/20/2012] [Accepted: 09/14/2012] [Indexed: 12/20/2022]
Abstract
BACKGROUND Sleep is a physiological event that directly influences health by affecting the immune system, in which calcium (Ca(2+)) plays a critical signaling role. We performed live cell measurements of cytosolic Ca(2+) mobilization to understand the changes in Ca(2+) signaling that occur in splenic immune cells after various periods of sleep deprivation (SD). METHODS Adult male mice were subjected to sleep deprivation by platform technique for different periods (from 12 to 72h) and Ca(2+) intracellular fluctuations were evaluated in splenocytes by confocal microscopy. We also performed spleen cell evaluation by flow cytometry and analyzed intracellular Ca(2+) mobilization in endoplasmic reticulum and mitochondria. Additionally, Ca(2+) channel gene expression was evaluated RESULTS Splenocytes showed a progressive loss of intracellular Ca(2+) maintenance from endoplasmic reticulum (ER) stores. Transient Ca(2+) buffering by the mitochondria was further compromised. These findings were confirmed by changes in mitochondrial integrity and in the performance of the store operated calcium entry (SOCE) and stromal interaction molecule 1 (STIM1) Ca(2+) channels. CONCLUSIONS AND GENERAL SIGNIFICANCE These novel data suggest that SD impairs Ca(2+) signaling, most likely as a result of ER stress, leading to an insufficient Ca(2+) supply for signaling events. Our results support the previously described immunosuppressive effects of sleep loss and provide additional information on the cellular and molecular mechanisms involved in sleep function.
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Affiliation(s)
- Lisandro Lungato
- Department of Psychobiology, Universidade Federal de São Paulo, São Paulo, Brazil
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Rodríguez-Vázquez J, Camacho-Arroyo I, Velázquez-Moctezuma J. Differential impact of REM sleep deprivation on cytoskeletal proteins of brain regions involved in sleep regulation. Neuropsychobiology 2012; 65:161-7. [PMID: 22456537 DOI: 10.1159/000330010] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/21/2009] [Accepted: 06/09/2011] [Indexed: 12/16/2022]
Abstract
Rapid eye movement (REM) sleep is involved in memory consolidation, which implies synaptic plasticity. This process requires protein synthesis and the reorganization of the neural cytoskeleton. REM sleep deprivation (REMSD) has an impact on some neuronal proteins involved in synaptic plasticity, such as glutamate receptors and postsynaptic density protein 95, but its effects on cytoskeletal proteins is unknown. In this study, the effects of REMSD on the content of the cytoskeletal proteins MAP2 and TAU were analyzed. Adult female rats were submitted to selective REMSD by using the multiple platform technique. After 24, 48 or 72 h of REMSD, rats were decapitated and the following brain areas were dissected: pons, preoptic area, hippocampus and frontal cortex. Protein extraction and Western blot were performed. Results showed an increase in TAU content in the pons, preoptic area and hippocampus after 24 h of REMSD, while in the frontal cortex a significant increase in TAU content was observed after 72 h of REMSD. A TAU content decrease was observed in the hippocampus after 48 h of REMSD. Interestingly, a marked increase in TAU content was observed after 72 h of REMSD. MAP2 content only increased in the preoptic area at 24 h, and in the frontal cortex after 24 and 72 h of REMSD, without significant changes in the pons and hippocampus. These results support the idea that REM sleep plays an important role in the organization of neural cytoskeleton, and that this effect is tissue-specific.
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Affiliation(s)
- Jennifer Rodríguez-Vázquez
- Área de Neurociencias, Departamento de Biología de la Reproducción, Universidad Autónoma Metropolitana-Iztapalapa, Ciudad de México, México.
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Havekes R, Vecsey CG, Abel T. The impact of sleep deprivation on neuronal and glial signaling pathways important for memory and synaptic plasticity. Cell Signal 2012; 24:1251-60. [PMID: 22570866 PMCID: PMC3622220 DOI: 10.1016/j.cellsig.2012.02.010] [Citation(s) in RCA: 128] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Sleep deprivation is a common feature in modern society, and one of the consequences of sleep loss is the impairment of cognitive function. Although it has been widely accepted that sleep deprivation affects learning and memory, only recently has research begun to address which molecular signaling pathways are altered by sleep loss and, more importantly, which pathways can be targeted to reverse the memory impairments resulting from sleep deprivation. In this review, we discuss the different methods used to sleep deprive animals and the effects of different durations of sleep deprivation on learning and memory with an emphasis on hippocampus-dependent memory. We then review the molecular signaling pathways that are sensitive to sleep loss, with a focus on those thought to play a critical role in the memory and synaptic plasticity deficits observed after sleep deprivation. Finally, we highlight several recent attempts to reverse the effects of sleep deprivation on memory and synaptic plasticity. Future research building on these studies promises to contribute to the development of novel strategies to ameliorate the effects of sleep loss on cognition.
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Affiliation(s)
- Robbert Havekes
- Department of Biology, University of Pennsylvania, Philadelphia, USA
| | | | - Ted Abel
- Department of Biology, University of Pennsylvania, Philadelphia, USA
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Yang RH, Wang F, Hou XH, Cao ZP, Wang B, Xu XN, Hu SJ. Dietary ω-3 polyunsaturated fatty acids improves learning performance of diabetic rats by regulating the neuron excitability. Neuroscience 2012; 212:93-103. [PMID: 22516014 DOI: 10.1016/j.neuroscience.2012.04.005] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2012] [Revised: 03/30/2012] [Accepted: 04/07/2012] [Indexed: 11/25/2022]
Abstract
Previous research has demonstrated that diabetes induced learning and memory deficits. However, the mechanism of memory impairment induced by diabetes is poorly understood. Dietary fatty acids, especially polyunsaturated fatty acids (PUFA), have been shown to enhance learning and memory and prevent memory deficits in various experimental conditions. Sprague-Dawley rats were used in the present study to investigate the effect of fish oil supplementation on spatial learning and memory of streptozotocin (STZ)-induced diabetic rats with the Morris Water Maze. The excitability of CA1 pyramidal neurons and the related ionic currents was also examined. Diabetes impaired spatial learning and memory of rats. Diabetes decreased the sodium currents and increased the potassium currents, and further led to the reduction of excitability of CA1 pyramidal neurons, effects which may contribute to the behavioral deficits. Fish oil dietary supplementation decreased the transient currents and Kv4.2 expression in the hippocampus and partially improved learning performance of diabetic rats. The results of the present study suggested that sodium and potassium currents contributed to the inhibitory effect of diabetes on neuron excitability, further influencing learning and memory processing. Dietary fish oil may modulate the membrane excitability and is a possible strategy for preventing the impairments of diabetes on hippocampal function.
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Affiliation(s)
- R-H Yang
- Department of Nutrition and Food Hygiene, The Ministry of Education Key Laboratory of Hazard Assessment and Control in Special Operational Environment, School of Public Health, The Fourth Military Medical University, Xi'an 710032, PR China.
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Diabetes impairs learning performance through affecting membrane excitability of hippocampal pyramidal neurons. Behav Brain Res 2011; 224:250-8. [DOI: 10.1016/j.bbr.2011.05.043] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2011] [Revised: 05/20/2011] [Accepted: 05/25/2011] [Indexed: 11/19/2022]
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