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Zhang X, Zhou H, Liu H, Xu P. Role of Oxidative Stress in the Occurrence and Development of Cognitive Dysfunction in Patients with Obstructive Sleep Apnea Syndrome. Mol Neurobiol 2024; 61:5083-5101. [PMID: 38159196 DOI: 10.1007/s12035-023-03899-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2023] [Accepted: 12/14/2023] [Indexed: 01/03/2024]
Abstract
Obstructive sleep apnea syndrome (OSAS) causes recurrent apnea and intermittent hypoxia at night, leading to several complications such as cognitive dysfunction. However, the molecular mechanisms underlying cognitive dysfunction in OSAS are unclear, and oxidative stress mediated by intermittent hypoxia is an important mechanism. In addition, the improvement of cognitive dysfunction in patients with OSAS varies by different treatment regimens; among them, continuous positive airway pressure therapy (CPAP) is mostly recognized for improving cognitive dysfunction. In this review, we discuss the potential mechanisms of oxidative stress in OSAS, the common factors of affecting oxidative stress and the Links between oxidative stress and inflammation in OSAS, focusing on the potential links between oxidative stress and cognitive dysfunction in OSAS and the potential therapies for neurocognitive dysfunction in patients with OSAS mediated by oxidative stress. Therefore, further analysis on the relationship between oxidative stress and cognitive dysfunction in patients with OSAS will help to clarify the etiology and discover new treatment options, which will be of great significance for early clinical intervention.
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Affiliation(s)
- XiaoPing Zhang
- Department of Neurology, Affiliated Hospital of Zunyi Medical University, Zunyi, China
| | - Hongyan Zhou
- Department of Neurology, Affiliated Hospital of Zunyi Medical University, Zunyi, China
| | - HaiJun Liu
- Department of Neurology, Affiliated Hospital of Zunyi Medical University, Zunyi, China
| | - Ping Xu
- Department of Neurology, Affiliated Hospital of Zunyi Medical University, Zunyi, China.
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2
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Li X, Yi L, Liu X, Chen X, Chen S, Cai S. Isoquercitrin Played a Neuroprotective Role in Rats After Cerebral Ischemia/Reperfusion Through Up-Regulating Neuroglobin and Anti-Oxidative Stress. Transplant Proc 2023; 55:1751-1761. [PMID: 37391332 DOI: 10.1016/j.transproceed.2023.04.046] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2022] [Revised: 04/02/2023] [Accepted: 04/14/2023] [Indexed: 07/02/2023]
Abstract
BACKGROUND This study aims to investigate whether isoquercitrin (Iso) exerts a neuroprotective role effect after cerebral ischemia-reperfusion (CIR) via up-regulating neuroglobin (Ngb) or reducing oxidative stress. METHODS The middle cerebral artery occlusion/reperfusion (MCAO/R) model was constructed using Sprague Dawley rats. First, we divided 40 mice into 5 groups (n = 8): sham, MCAO/R, Low-dosed Iso (5 mg/kg Iso), Mid-dosed Iso (10 mg/kg Iso), and High-dosed Iso (20 mg/kg Iso). Then, 48 rats were separated into 6 groups (n = 8): sham, MCAO/R, Iso, artificial cerebrospinal fluid, Ngb antisense oligodeoxynucleotides (AS-ODNs), and AS-ODNs ± Iso. The effects of Iso on brain tissue injury and oxidative stress were evaluated using hematoxylin-eosin staining, terminal deoxynucleotidyl transferase-mediated dUTP nick end labeling assay, immunofluorescence, western blotting, and real-time quantitative polymerase chain reaction, enzyme-linked immunosorbent assay, and reactive oxygen species (ROS) detection. RESULTS The neurologic score, infarct volume, histopathology, apoptosis rate, and ROS production were reduced in Iso dose-dependent. The Ngb expression enhanced in Iso dose-dependent. The oxidative stress-related factors SOD, GSH, CAT, Nrf2, HO-1, and HIF-1α levels also increased in Iso dose-dependent, whereas the MDA levels decreased. However, related regulation of Iso on brain tissue damage and oxidative stress were reversed after low expression of Ngb. CONCLUSION Isoquercitrin played a neuroprotective role after CIR through up-regulating of Ngb and anti-oxidative stress.
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Affiliation(s)
- Xiuping Li
- School of Public Health and Laboratory Medicine, Hunan University of Medicine, Huaihua, China
| | - Liming Yi
- Department of Human Anatomy, School of Basic Medical Sciences, Hunan University of Medicine, Huaihua, China
| | - Xing Liu
- Department of Human Anatomy, School of Basic Medical Sciences, Hunan University of Medicine, Huaihua, China
| | - Xia Chen
- Department of Human Anatomy, School of Basic Medical Sciences, Hunan University of Medicine, Huaihua, China
| | - Sanchun Chen
- Hunan Bestcome Traditional Medicine Co, Ltd, Huaihua, China
| | - Shichang Cai
- Department of Human Anatomy, School of Basic Medical Sciences, Hunan University of Medicine, Huaihua, China.
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3
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Puech C, Badran M, Runion AR, Barrow MB, Cataldo K, Gozal D. Cognitive Impairments, Neuroinflammation and Blood-Brain Barrier Permeability in Mice Exposed to Chronic Sleep Fragmentation during the Daylight Period. Int J Mol Sci 2023; 24:9880. [PMID: 37373028 DOI: 10.3390/ijms24129880] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2023] [Revised: 06/06/2023] [Accepted: 06/06/2023] [Indexed: 06/29/2023] Open
Abstract
Obstructive sleep apnea (OSA) is a chronic condition characterized by intermittent hypoxia (IH) and sleep fragmentation (SF). In murine models, chronic SF can impair endothelial function and induce cognitive declines. These deficits are likely mediated, at least in part, by alterations in Blood-brain barrier (BBB) integrity. Male C57Bl/6J mice were randomly assigned to SF or sleep control (SC) conditions for 4 or 9 weeks and in a subset 2 or 6 weeks of normal sleep recovery. The presence of inflammation and microglia activation were evaluated. Explicit memory function was assessed with the novel object recognition (NOR) test, while BBB permeability was determined by systemic dextran-4kDA-FITC injection and Claudin 5 expression. SF exposures resulted in decreased NOR performance and in increased inflammatory markers and microglial activation, as well as enhanced BBB permeability. Explicit memory and BBB permeability were significantly associated. BBB permeability remained elevated after 2 weeks of sleep recovery (p < 0.01) and returned to baseline values only after 6 weeks. Chronic SF exposures mimicking the fragmentation of sleep that characterizes patients with OSA elicits evidence of inflammation in brain regions and explicit memory impairments in mice. Similarly, SF is also associated with increased BBB permeability, the magnitude of which is closely associated with cognitive functional losses. Despite the normalization of sleep patterns, BBB functional recovery is a protracted process that merits further investigation.
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Affiliation(s)
- Clementine Puech
- Child Health Research Institute, Department of Child Health, School of Medicine, University of Missouri, 400 N Keene St., Suite 010, Columbia, MO 65201, USA
| | - Mohammad Badran
- Child Health Research Institute, Department of Child Health, School of Medicine, University of Missouri, 400 N Keene St., Suite 010, Columbia, MO 65201, USA
| | - Alexandra R Runion
- Undergraduate Student Research Program, University of Missouri, Columbia, MO 65201, USA
| | - Max B Barrow
- Child Health Research Institute, Department of Child Health, School of Medicine, University of Missouri, 400 N Keene St., Suite 010, Columbia, MO 65201, USA
| | - Kylie Cataldo
- Child Health Research Institute, Department of Child Health, School of Medicine, University of Missouri, 400 N Keene St., Suite 010, Columbia, MO 65201, USA
| | - David Gozal
- Child Health Research Institute, Department of Child Health, School of Medicine, University of Missouri, 400 N Keene St., Suite 010, Columbia, MO 65201, USA
- Department of Medical Pharmacology and Physiology, School of Medicine, University of Missouri, Columbia, MO 65201, USA
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4
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Erikson KM, El-Khouri K, Petric R, Tang C, Chen J, Vasquez DEC, Fordahl SC, Jia Z. Carbon Nanodots Attenuate Lipid Peroxidation in the LDL Receptor Knockout Mouse Brain. Antioxidants (Basel) 2023; 12:antiox12051081. [PMID: 37237947 DOI: 10.3390/antiox12051081] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2023] [Revised: 04/28/2023] [Accepted: 05/09/2023] [Indexed: 05/28/2023] Open
Abstract
Abnormal cholesterol metabolism can lead to oxidative stress in the brain. Low-density lipoprotein receptor (LDLr) knockout mice are models for studying altered cholesterol metabolism and oxidative stress onset in the brain. Carbon nanodots are a new class of carbon nanomaterials that possess antioxidant properties. The goal of our study was to evaluate the effectiveness of carbon nanodots in preventing brain lipid peroxidation. LDLr knockout mice and wild-type C57BL/6J mice were treated with saline or 2.5 mg/kg bw of carbon nanodots for a 16-week period. Brains were removed and dissected into the cortex, midbrain, and striatum. We measured lipid peroxidation in the mouse brain tissues using the Thiobarbituric Acid Reactive Substances Assay and iron and copper concentrations using Graphite Furnace Atomic Absorption Spectroscopy. We focused on iron and copper due to their association with oxidative stress. Iron concentrations were significantly elevated in the midbrain and striatum of the LDLr knockout mice compared to the C57BL/6J mice, whereas lipid peroxidation was greatest in the midbrain and cortex of the LDLr knockout mice. Treatment with carbon nanodots in the LDLr knockout mice attenuated both the rise in iron and lipid peroxidation, but they had no negative effect in the C57BL/6J mice, indicating the anti-oxidative stress properties of carbon nanodots. We also assessed locomotor and anxiety-like behaviors as functional indicators of lipid peroxidation and found that treatment with carbon nanodots prevented the anxiety-like behaviors displayed by the LDLr knockout mice. Overall, our results show that carbon nanodots are safe and may be an effective nanomaterial for combating the harmful effects caused by lipid peroxidation.
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Affiliation(s)
- Keith M Erikson
- Department of Nutrition, University of North Carolina, Greensboro, NC 27401, USA
| | - Kristina El-Khouri
- Department of Nutrition, University of North Carolina, Greensboro, NC 27401, USA
| | - Radmila Petric
- Department of Biology, University of North Carolina, Greensboro, NC 27401, USA
- Institute for the Environment, University of North Carolina, Chapel-Hill, NC 27517, USA
| | - Chenhao Tang
- Department of Biology, University of North Carolina, Greensboro, NC 27401, USA
| | - Jinlan Chen
- Department of Biology, University of North Carolina, Greensboro, NC 27401, USA
| | | | - Steve C Fordahl
- Department of Nutrition, University of North Carolina, Greensboro, NC 27401, USA
| | - Zhenquan Jia
- Department of Biology, University of North Carolina, Greensboro, NC 27401, USA
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5
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Ying H, Zhang Z, Wang W, Yang Z, You C, Li Y, Cai X, Li X. Inhibition of Calcium-Sensing Receptor Alleviates Chronic Intermittent Hypoxia-Induced Cognitive Dysfunction via CaSR-PKC-ERK1/2 Pathway. Mol Neurobiol 2023; 60:2099-2115. [PMID: 36600080 DOI: 10.1007/s12035-022-03189-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2022] [Accepted: 12/25/2022] [Indexed: 01/06/2023]
Abstract
Obstructive sleep apnea-hypopnea syndrome (OSAHS) is typically characterized by chronic intermittent hypoxia (CIH), associated with cognitive dysfunction in children. Calcium-sensing receptor (CaSR) mediates the apoptosis of hippocampal neurons in various diseases. However, the effect of CaSR on OSAHS remains elusive. In the present study, we investigated the role of CaSR in CIH-induced memory dysfunction and underlying mechanisms on regulation of PKC-ERK1/2 signaling pathway in vivo and in vitro. CIH exposures for 4 weeks in mice, modeling OSAHS, contributed to cognitive dysfunction. CIH accelerated apoptosis of hippocampal neurons and resulted in the synaptic plasticity deficit via downregulated synaptophysin (Syn) protein level. The mice were intraperitoneally injected with CaSR inhibitor (NPS2143) 30 min before CIH exposure and the results demonstrated CaSR inhibitor alleviated the apoptosis and synaptic plasticity deficit in the hippocampus of CIH mice. We established intermittent hypoxia PC12 cell model and found that the activation of CaSR accelerated CIH-induced PC12 apoptosis and synaptic plasticity deficit by upregulated p-ERK1/2 and PKC. Overall, our findings revealed that CaSR held a critical function on CIH-induced cognitive dysfunction in mice by accelerating hippocampal neuronal apoptosis and reducing synaptic plasticity via augmenting CaSR-PKC-ERK1/2 pathway; otherwise, inhibition of CaSR alleviated CIH-induced cognitive dysfunction.
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Affiliation(s)
- Huiya Ying
- Department of Pediatric Neurology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, 109 Xueyuan Western Road, Wenzhou, China
- Clinical Medicine, The Second School of Medicine, Wenzhou Medical University, Wenzhou, China
| | - Zilong Zhang
- Department of Pediatric Neurology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, 109 Xueyuan Western Road, Wenzhou, China
- Clinical Medicine, The Second School of Medicine, Wenzhou Medical University, Wenzhou, China
| | - Wei Wang
- Department of Pediatric Orthopedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China
| | - Zijing Yang
- Department of Pediatric Neurology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, 109 Xueyuan Western Road, Wenzhou, China
- Clinical Medicine, The Second School of Medicine, Wenzhou Medical University, Wenzhou, China
| | - Cancan You
- Department of Pediatric Neurology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, 109 Xueyuan Western Road, Wenzhou, China
- Clinical Medicine, The Second School of Medicine, Wenzhou Medical University, Wenzhou, China
| | - Yuanai Li
- Department of Pediatric Sleep, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China
| | - Xiaohong Cai
- Department of Pediatric Sleep, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China
| | - Xiucui Li
- Department of Pediatric Neurology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, 109 Xueyuan Western Road, Wenzhou, China.
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Puech C, Badran M, Runion AR, Barrow MB, Qiao Z, Khalyfa A, Gozal D. Explicit memory, anxiety and depressive like behavior in mice exposed to chronic intermittent hypoxia, sleep fragmentation, or both during the daylight period. Neurobiol Sleep Circadian Rhythms 2022; 13:100084. [PMID: 36254342 PMCID: PMC9568859 DOI: 10.1016/j.nbscr.2022.100084] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2022] [Revised: 09/01/2022] [Accepted: 10/07/2022] [Indexed: 11/27/2022] Open
Abstract
Obstructive sleep apnea (OSA) is a chronic and highly prevalent condition characterized by chronic intermittent hypoxia (IH) and sleep fragmentation (SF), and can lead to a vast array of end-organ morbidities, particularly affecting cardiovascular, metabolic and neurobehavioral functioning. OSA can induce cognitive and behavioral and mood deficits. Male C57Bl/6J 8-week-old mice were housed in custom-designed cages with a silent motorized mechanical sweeper traversing the cage floor at 2-min intervals (SF) during daylight for four weeks. Sleep control (SC) consisted of keeping sweeper immobile. IH consisted of cycling FiO2 21% 90 seconds-6.3% 90s or room air (RA; FiO2 21%) for sixteen weeks and combined SF-IH was conducted for nine weeks. Open field novel object recognition (NOR) testing, elevated-plus maze test (EPMT), and forced swimming test (FST) were performed. SF induced cognitive NOR performance impairments in mice along with reduced anxiety behaviors while IH induced deficits in NOR performance, but increased anxiety behaviors. SF-IH induced impaired performance in NOR test of similar magnitude to IH or SF alone. Combined SF-IH exposures did not affect anxiety behaviors. Thus, both SF an IH altered cognitive function while imposing opposite effects on anxiety behaviors. SF-IH did not magnify the detrimental effects of isolated SF or IH and canceled out the effects on anxiety. Based on these findings, the underlying pathophysiologic processes underlying IH and SF adverse effects on cognitive function appear to differ, while those affecting anxiety counteract each other.
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Affiliation(s)
- Clementine Puech
- Child Health Research Institute, Department of Child Health, School of Medicine, University of Missouri, Columbia, MO, USA
| | - Mohammad Badran
- Child Health Research Institute, Department of Child Health, School of Medicine, University of Missouri, Columbia, MO, USA
| | - Alexandra R Runion
- Undergraduate Student Research Program, University of Missouri, Columbia, MO, USA
| | - Max B Barrow
- Undergraduate Student Research Program, University of Missouri, Columbia, MO, USA
| | - Zhuanhong Qiao
- Child Health Research Institute, Department of Child Health, School of Medicine, University of Missouri, Columbia, MO, USA
| | - Abdelnaby Khalyfa
- Child Health Research Institute, Department of Child Health, School of Medicine, University of Missouri, Columbia, MO, USA
| | - David Gozal
- Child Health Research Institute, Department of Child Health, School of Medicine, University of Missouri, Columbia, MO, USA
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7
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Exertier C, Montemiglio LC, Freda I, Gugole E, Parisi G, Savino C, Vallone B. Neuroglobin, clues to function and mechanism. Mol Aspects Med 2021; 84:101055. [PMID: 34876274 DOI: 10.1016/j.mam.2021.101055] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2021] [Revised: 11/23/2021] [Accepted: 11/24/2021] [Indexed: 12/19/2022]
Abstract
Neuroglobin is expressed in vertebrate brain and belongs to a branch of the globin family that diverged early in evolution. Sequence conservation and presence in nervous cells of several taxa suggests a relevant role in the nervous system, with tight structural restraints. Twenty years after its discovery, a rich scientific literature provides convincing evidence of the involvement of neuroglobin in sustaining neuron viability in physiological and pathological conditions however, a full and conclusive picture of its specific function, or set of functions is still lacking. The difficulty of unambiguously assigning a precise mechanism and biochemical role to neuroglobin might arise from the participation to one or more cell mechanism that redundantly guarantee the functioning of the highly specialized and metabolically demanding central nervous system of vertebrates. Here we collect findings and hypotheses arising from recent biochemical, biophysical, structural, in cell and in vivo experimental work on neuroglobin, aiming at providing an overview of the most recent literature. Proteins are said to have jobs and hobbies, it is possible that, in the case of neuroglobin, evolution has selected for it more than one job, and support to cover for its occasional failings. Disentangling the mechanisms and roles of neuroglobin is thus a challenging task that might be achieved by considering data from different disciplines and experimental approaches.
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Affiliation(s)
- Cécile Exertier
- Dipartimento di Scienze Biochimiche "A. Rossi Fanelli", Sapienza, Università di Roma, P.le A. Moro 5, 00185, Rome, Italy
| | - Linda Celeste Montemiglio
- Institute of Molecular Biology and Pathology, National Research Council, P.le A. Moro 5, 00185, Rome, Italy
| | - Ida Freda
- Dipartimento di Scienze Biochimiche "A. Rossi Fanelli", Sapienza, Università di Roma, P.le A. Moro 5, 00185, Rome, Italy
| | - Elena Gugole
- Dipartimento di Scienze Biochimiche "A. Rossi Fanelli", Sapienza, Università di Roma, P.le A. Moro 5, 00185, Rome, Italy
| | - Giacomo Parisi
- Center for Life Nanoscience, Istituto Italiano di Tecnologia, 00161, Rome, Italy
| | - Carmelinda Savino
- Institute of Molecular Biology and Pathology, National Research Council, P.le A. Moro 5, 00185, Rome, Italy.
| | - Beatrice Vallone
- Dipartimento di Scienze Biochimiche "A. Rossi Fanelli", Sapienza, Università di Roma, P.le A. Moro 5, 00185, Rome, Italy.
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Ginerete RP, Mascio G, Liberatore F, Bucci D, Antenucci N, Di Pietro P, Cannella M, Imbriglio T, Notartomaso S, Nicoletti F, Bruno V, Battaglia G. Repeated episodes of transient reduction of oxygen exposure simulating aircraft cabin conditions enhance resilience to stress in mice. Eur J Neurosci 2021; 54:7109-7124. [PMID: 34655118 DOI: 10.1111/ejn.15495] [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: 05/28/2021] [Revised: 09/01/2021] [Accepted: 10/01/2021] [Indexed: 11/30/2022]
Abstract
Pilots and crew of domestic flights are exposed to transient periods of mild reductions of partial pressure of inspired oxygen each day, and this might have functional consequence on their performance in the long range. Here, we exposed mice to mild reductions of oxygen exposure (ROE) four times per day for 21 days by lowering oxygen partial pressure to levels corresponding to an altitude of about 2300 m, which is the quote of pressurization of the air cabin. Four groups of mice were studied: unstressed or stressed mice exposed to ROE or normoxic conditions. Mice were exposed to chronic unpredictable stress (CUS) for 28 days, and ROE was delivered in the last 21 days of CUS. In normoxic mice, CUS caused anhedonia in the sucrose preference test, anxiety-like behaviour in the open field test, learning impairment in the Morris water maze, reduced hippocampal neurogenesis, increased serum corticosterone levels and increased expression of depression-related genes (Pclo, Mthfr and Grm5) in the hippocampus. All these changes were reversed by ROE, which had little or no effect in unstressed mice. These findings suggest that ROE simulating air cabin conditions of domestic flights may enhance resilience to stress improving mood, anxiety and learning ability.
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Affiliation(s)
- Roxana Paula Ginerete
- Department of Molecular Pathology, Neuropharmacology Unit, I.R.C.C.S. Neuromed, Pozzilli, Italy
| | - Giada Mascio
- Department of Molecular Pathology, Neuropharmacology Unit, I.R.C.C.S. Neuromed, Pozzilli, Italy
| | - Francesca Liberatore
- Department of Molecular Pathology, Neuropharmacology Unit, I.R.C.C.S. Neuromed, Pozzilli, Italy
| | - Domenico Bucci
- Department of Molecular Pathology, Neuropharmacology Unit, I.R.C.C.S. Neuromed, Pozzilli, Italy
| | - Nico Antenucci
- Department of Physiology and Pharmacology, Sapienza University, Rome, Italy
| | - Paola Di Pietro
- Department of Molecular Pathology, Neuropharmacology Unit, I.R.C.C.S. Neuromed, Pozzilli, Italy
| | - Milena Cannella
- Department of Molecular Pathology, Neuropharmacology Unit, I.R.C.C.S. Neuromed, Pozzilli, Italy
| | - Tiziana Imbriglio
- Department of Molecular Pathology, Neuropharmacology Unit, I.R.C.C.S. Neuromed, Pozzilli, Italy
| | - Serena Notartomaso
- Department of Molecular Pathology, Neuropharmacology Unit, I.R.C.C.S. Neuromed, Pozzilli, Italy
| | - Ferdinando Nicoletti
- Department of Molecular Pathology, Neuropharmacology Unit, I.R.C.C.S. Neuromed, Pozzilli, Italy.,Department of Physiology and Pharmacology, Sapienza University, Rome, Italy
| | - Valeria Bruno
- Department of Molecular Pathology, Neuropharmacology Unit, I.R.C.C.S. Neuromed, Pozzilli, Italy.,Department of Physiology and Pharmacology, Sapienza University, Rome, Italy
| | - Giuseppe Battaglia
- Department of Molecular Pathology, Neuropharmacology Unit, I.R.C.C.S. Neuromed, Pozzilli, Italy.,Department of Physiology and Pharmacology, Sapienza University, Rome, Italy
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Liu T, Ouyang R. Effect of continuous positive air pressure on cognitive impairment associated with obstructive sleep apnea. ZHONG NAN DA XUE XUE BAO. YI XUE BAN = JOURNAL OF CENTRAL SOUTH UNIVERSITY. MEDICAL SCIENCES 2021; 46:865-871. [PMID: 34565731 PMCID: PMC10929983 DOI: 10.11817/j.issn.1672-7347.2021.190600] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Subscribe] [Scholar Register] [Received: 08/30/2019] [Indexed: 11/03/2022]
Abstract
Obstructive sleep apnea (OSA) is a kind of sleep-related breathing disorder, involving multiple organs and systems, which can lead to cognitive impairment. At present, the pathophysiological mechanism of cognitive impairment related to OSA is not clear. It is still unknown whether continuous positive airway pressure (CPAP) has therapeutic effect on cognitive impairment in patients with OSA. These patients repeatedly experience intermittent hypoxia and have sleep fragmentation, which results in abnormal brain structure and function, characterizing by extensive cognitive impairment. Appropriate CPAP can correct the abnormal pathophysiological process of OSA patients, restore brain structure and function to a certain extent, and improve cognitive function. Domestic OSA patients have poor acceptance and compliance to CPAP, while the therapeutic effect of CPAP depends on the timing of treatment and compliance, so many patients do not get effective treatment. Systematically expounding the influence of CPAP on the cognitive function of patients with OSA can help clinicians and patients improve their understanding of CPAP treatment and establish a correct concept of early and standardized treatment.
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Affiliation(s)
- Ting Liu
- Department of Respiratory and Critical Care Medicine, Second Xiangya Hospital, Central South University, Changsha 410011, China.
| | - Ruoyun Ouyang
- Department of Respiratory and Critical Care Medicine, Second Xiangya Hospital, Central South University, Changsha 410011, China.
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10
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Polmann H, Réus JC, Maia I, Dick BD, Gozal D, Flores-Mir C, Porporatti AL, De Luca Canto G. Association between sleep disordered breathing and symptoms of attention deficits in adults: a systematic review. Sleep Med 2020; 73:223-230. [DOI: 10.1016/j.sleep.2020.06.031] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/17/2019] [Revised: 06/22/2020] [Accepted: 06/23/2020] [Indexed: 10/23/2022]
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11
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Yang F, Zhang Y, Tang Z, Shan Y, Wu X, Liu H. Hemin treatment protects neonatal rats from sevoflurane-induced neurotoxicity via the phosphoinositide 3-kinase/Akt pathway. Life Sci 2019; 242:117151. [PMID: 31843526 DOI: 10.1016/j.lfs.2019.117151] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2019] [Revised: 11/30/2019] [Accepted: 12/08/2019] [Indexed: 12/19/2022]
Abstract
AIMS Anaesthesia-related neurotoxicity in the developing brain is a controversial issue that has recently attracted much attention. Hemin plays a protective role in hypoxic and ischemic brain damage; however, its effects on sevoflurane-induced neurotoxicity remain unclear. Our aim was to investigate the mechanisms of sevoflurane neurotoxicity and potential neuroprotective roles of hemin upon sevoflurane exposure. MAIN METHODS Hippocampi were harvested 18 h after sevoflurane exposure. Haem oxygenase 1 (HMOX1), superoxide dismutase 2 (SOD2), discs large MAGUK scaffold protein 4 (DLG4), phosphorylated Akt, Akt, cleaved caspase 3, and neuroglobin were detected by western blotting. A water maze test was used to assess learning and memory ability in P30 rats. KEY FINDINGS Sevoflurane inhalation increased cleaved caspase 3 levels. Hemin treatment enhanced the antioxidant defence response, protecting rats from oxidative stress injury. Hemin plays its neuroprotective role via phosphoinositide 3-kinase (PI3K)/Akt signalling. A single inhalation of sevoflurane did not affect DLG4 expression, while hemin treatment did. Platform crossing increased in rats treated with hemin as well, which may be related to increased DLG4. Neuroglobin expression was not affected, suggesting that it may act upstream of PI3K/Akt signalling. SIGNIFICANCE Our study demonstrates that hemin plays a protective role in anaesthesia-induced neurotoxicity by both inhibiting apoptosis via the PI3K/Akt pathway and increasing the expression of antioxidant enzymes, reducing oxidative damage. The results provide mechanistic insight into the effects of sevoflurane anaesthesia on the developing brain and suggest that hemin could help avoid these effects.
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Affiliation(s)
- Fan Yang
- Shengjing Hospital of China Medical University, Shenyang, China
| | - Yongfang Zhang
- Shengjing Hospital of China Medical University, Shenyang, China
| | - Zhiyin Tang
- Shengjing Hospital of China Medical University, Shenyang, China
| | - Yangyang Shan
- The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Xiuying Wu
- Shengjing Hospital of China Medical University, Shenyang, China
| | - Hongtao Liu
- Shengjing Hospital of China Medical University, Shenyang, China.
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Yang F, Shan Y, Tang Z, Wu X, Bi C, Zhang Y, Gao Y, Liu H. The Neuroprotective Effect of Hemin and the Related Mechanism in Sevoflurane Exposed Neonatal Rats. Front Neurosci 2019; 13:537. [PMID: 31191229 PMCID: PMC6546893 DOI: 10.3389/fnins.2019.00537] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2018] [Accepted: 05/08/2019] [Indexed: 01/05/2023] Open
Abstract
Background Many studies have reported that sevoflurane can increase neuronal apoptosis and result in cognitive deficits in rodents. Although neurotoxicity may be associated with mitochondrial dysfunction and oxidative stress, the exact mechanism remains unclear. In order to evaluate potential treatment therapies, we studied the effects of hemin on neurotoxicity of neonatal rat sevoflurane exposure. Methods Postnatal day (P) seven rats were assigned randomly to four groups; (1) group C: non-anesthesia, (2) group H: intraperitoneal hemin (50 mg kg-1) treatment on days 5 and 6, (3) group S: 3% sevoflurane exposure for 4 h, and (4) group SH: hemin treatment + sevoflurane exposure. The expression of neuroglobin in neonatal hippocampus was determined by western blot and immunohistochemistry. Neuroglobin was localized by immunofluorescence. Western blot for the expression of cleaved caspase-3 and TUNEL were used to detect neonatal hippocampal apoptosis, and cytochrome c was used to evaluate mitochondrial function. Drp-1 and Mfn-2 immunoblotting were used to assess mitochondrial dynamics. The Morris water maze test was performed to detect cognitive function in the rats on P30. Results Exposure to sevoflurane increased the expression of cleaved caspase-3, cytochrome c, and Drp1 in the neonatal hippocampus and resulted in cognitive deficiency but decreased expression of Mfn2. Hemin reduced apoptosis, improved mitochondrial dynamics and ameliorated the cognitive impairment caused by sevoflurane exposure. Conclusion Hemin reduced neuronal apoptosis, improved mitochondrial dynamics and protected against cognitive deficits induced by sevoflurane in neonatal rats. This neuroprotective effect may be achieved by increasing the expression of neuroglobin.
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Affiliation(s)
- Fan Yang
- Department of Anesthesiology, Shengjing Hospital, China Medical University, Shenyang, China
| | - Yangyang Shan
- Department of Anesthesiology, Shengjing Hospital, China Medical University, Shenyang, China
| | - Zhiyin Tang
- Department of Anesthesiology, Shengjing Hospital, China Medical University, Shenyang, China
| | - Xiuying Wu
- Department of Anesthesiology, Shengjing Hospital, China Medical University, Shenyang, China
| | - Congjie Bi
- Department of Anesthesiology, Dalian Central Hospital, Dalian, China
| | - Yongfang Zhang
- Department of Anesthesiology, Shengjing Hospital, China Medical University, Shenyang, China
| | - Yan Gao
- Department of Anesthesiology, The First Affiliated Hospital of Hebei North University, Zhangjiakou, China
| | - Hongtao Liu
- Department of Anesthesiology, Shengjing Hospital, China Medical University, Shenyang, China.,Department of Anesthesiology, Dalian Central Hospital, Dalian, China.,Department of Anesthesiology, The First Affiliated Hospital of Hebei North University, Zhangjiakou, China
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