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Shi Z, Zhang J, Ma H, Jing L. Network pharmacology and in vivo experimental studies reveal the protective effects of 6-hydroxygenistein against hypobaric hypoxia-induced brain injury. Heliyon 2024; 10:e36241. [PMID: 39253263 PMCID: PMC11382173 DOI: 10.1016/j.heliyon.2024.e36241] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2024] [Revised: 08/12/2024] [Accepted: 08/13/2024] [Indexed: 09/11/2024] Open
Abstract
Hypobaric hypoxia-induced brain injury (HHBI) is a progressive neurodegenerative disease that has still not been effectively treated. There are several different mechanisms involved in HHBI. Among them, oxidative stress and inflammation response predominate. 6-hydroxygenistein (4',5,6,7-tetrahydroxyisoflavone, 6-OHG) is a hydroxylated derivative of genistein with excellent antioxidant activity, however, the protective effects and underlying mechanisms against HHBI have not been clarified. In the present study, we aimed to explore the mechanisms of action of 6-OHG on HHBI using network pharmacology and experimental validation. Network pharmacology analysis revealed 186 candidate targets through the intersection of the targets of 6-OHG and related genes in HHBI, which were mainly enriched in oxidative stress and inflammation response. Moreover, key targets of 6-OHG against HHBI, namely Nrf2 and NF-κB, were screened and found to be closely related to oxidative stress and inflammation response. Subsequent in vivo experiments revealed that 6-OHG treatment attenuated oxidative stress and inflammation response, prevented energy disorder and apoptosis as well as maintained the BBB integrity in HHBI mice. In addition, 6-OHG administration up-regulated the expressions of Nrf2 and HO-1 and down-regulated the expressions of NF-κB and NLRP3, thereby inhibiting oxidative stress and inflammation response. Hence, the present study demonstrates that 6-OHG protects against HHBI by stimulating the Nrf2/HO-1 signaling pathway and suppressing the NF-κB/NLRP3 signaling pathway.
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Affiliation(s)
- Zhiqun Shi
- Department of Pharmacy, the First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, 710061, China
- Department of Pharmacy, the 940th Hospital of Joint Logistics Support Force of PLA, Lanzhou, Gansu, 730050, China
| | - Jie Zhang
- Department of Pharmacy, the First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, 710061, China
| | - Huiping Ma
- Department of Pharmacy, the 940th Hospital of Joint Logistics Support Force of PLA, Lanzhou, Gansu, 730050, China
| | - Linlin Jing
- Department of Pharmacy, the First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, 710061, China
- Department of Pharmacy, the 940th Hospital of Joint Logistics Support Force of PLA, Lanzhou, Gansu, 730050, China
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2
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Llana T, Zorzo C, Mendez-Lopez M, Mendez M. Memory alterations after COVID-19 infection: a systematic review. APPLIED NEUROPSYCHOLOGY. ADULT 2024; 31:292-305. [PMID: 36108666 DOI: 10.1080/23279095.2022.2123739] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
SARS-CoV-2 infection has a wide range of both acute and long-term symptoms. Memory alterations have been frequently reported in studies that explore cognition. The main objective of the systematic review is to update and further analyze the existing evidence of objective memory impairments in long-COVID-19 considering sample and study design characteristics, as well as to explore associations between memory performance and their epidemiological, clinical, and pathological features. A total of 13 studies were identified by searching in PubMed, Web of Science, and PsycInfo databases up to May 6, 2022. Most studies evaluated verbal component of memory in the short-term and long-term recall up to 30 min and mainly performed a single assessment completed at 4-6 months after the infection. The samples mainly consisted of middle-aged adults that required hospitalization. Samples were not stratified by sex, age, and severity. Poor verbal learning was reported in most cases (6-58%), followed by deficits in long-term (4-58%) and short-term (4-37%) verbal memory. Visuospatial component of memory was studied less than verbal component, showing impairment of long-term retention of visual items (10-49%). COVID-19 severity in the acute stage was not systematically associated with poor memory performance. Verbal memory deficits were associated with anxiety and depression. The existing literature on objective memory assessment in long-COVID suggests further research is warranted to confirm memory dysfunction in association with epidemiological, pathological, and clinical factors, using both verbal and visuospatial tests, and exploring in deep long-term memory deficits.
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Affiliation(s)
- Tania Llana
- Department of Psychology, Faculty of Psychology, University of Oviedo, Oviedo, Spain
| | - Candela Zorzo
- Department of Psychology, Faculty of Psychology, University of Oviedo, Oviedo, Spain
- Faculty of Psychology, Neuroscience Institute of Principado de Asturias (INEUROPA), Oviedo, Spain
- Instituto de Investigación Sanitaria del Principado de Asturias (ISPA), Av. del Hospital Universitario, Oviedo, Spain
| | - Magdalena Mendez-Lopez
- Department of Psychology and Sociology, University of Zaragoza, Zaragoza, Spain
- IIS Aragón, Zaragoza, Spain
| | - Marta Mendez
- Department of Psychology, Faculty of Psychology, University of Oviedo, Oviedo, Spain
- Faculty of Psychology, Neuroscience Institute of Principado de Asturias (INEUROPA), Oviedo, Spain
- Instituto de Investigación Sanitaria del Principado de Asturias (ISPA), Av. del Hospital Universitario, Oviedo, Spain
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Verma K, Amitabh, Prasad DN, Reddy MPK, Kohli E. Kynurenines Dynamics in the Periphery and Central Nervous System Steers Behavioral Deficits in Rats under Hypobaric Hypoxia. ACS Chem Neurosci 2024; 15:1084-1095. [PMID: 38462729 DOI: 10.1021/acschemneuro.3c00632] [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] [Indexed: 03/12/2024] Open
Abstract
People travel to high-altitude regions as tourists, workers, and military personnel on duty. Despite the consistent 21% oxygen content in the atmosphere, ascending to higher altitudes results in a decrease in the partial pressure of oxygen, inducing a state known as hypobaric hypoxia (HH). HH is an environmental stress that is responsible for neuroinflammation and behavioral deficits (anxiety, depression, mood disturbance, etc.), but little is known about its metabolic pathways. The kynurenine pathway (KP) is a promising candidate to uncover the mysteries of HH stress, as it is an important regulator of the immune system and is associated with behavioral deficits. To investigate the role of KP under HH, the levels of KP metabolites in the serum, cerebrospinal fluid (CSF), and brain tissue (prefrontal cortex-PFC, neocortex, and hippocampus) of male Sprague-Dawley rats exposed to HH at 7620 m for 1, 3, and 7 days were estimated utilizing high-performance liquid chromatography (HPLC). The behavioral analogs for anxiety-like and depression-like behavior were assessed using the open field test and forced swim test, respectively. Upon HH exposure, crosstalk between the periphery and central nervous system and KP metabolite region-dependent differential expression in the brain were observed. KP metabolites showed a positive correlation with behavioral parameters. The results of our study are indicative that KP can be proposed as the etiology of behavioral deficits, and KP metabolite levels in serum or CSF can be used as plausible markers for anxiety-like and depression-like behaviors under HH stress with a scope of targeted therapeutic interventions.
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Affiliation(s)
- Kalyani Verma
- Department of Neurobiology, Defence Institute of Physiology and Allied Sciences, DRDO, Timarpur,Delhi 110054, India
| | - Amitabh
- Department of Neurobiology, Defence Institute of Physiology and Allied Sciences, DRDO, Timarpur,Delhi 110054, India
| | - Dipti N Prasad
- Department of Neurobiology, Defence Institute of Physiology and Allied Sciences, DRDO, Timarpur,Delhi 110054, India
| | - M Prasanna Kumar Reddy
- Department of Applied Physiology, Defence Institute of Physiology and Allied Sciences, DRDO, Timarpur, Delhi 110054, India
| | - Ekta Kohli
- Department of Neurobiology, Defence Institute of Physiology and Allied Sciences, DRDO, Timarpur,Delhi 110054, India
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Ando S, Tsukamoto H, Stacey BS, Washio T, Owens TS, Calverley TA, Fall L, Marley CJ, Iannetelli A, Hashimoto T, Ogoh S, Bailey DM. Acute hypoxia impairs posterior cerebral bioenergetics and memory in man. Exp Physiol 2023; 108:1516-1530. [PMID: 37898979 PMCID: PMC10988469 DOI: 10.1113/ep091245] [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: 04/06/2023] [Accepted: 10/03/2023] [Indexed: 10/31/2023]
Abstract
Hypoxia has the potential to impair cognitive function; however, it is still uncertain which cognitive domains are adversely affected. We examined the effects of acute hypoxia (∼7 h) on central executive (Go/No-Go) and non-executive (memory) tasks and the extent to which impairment was potentially related to regional cerebral blood flow and oxygen delivery (CDO2 ). Twelve male participants performed cognitive tasks following 0, 2, 4 and 6 h of passive exposure to both normoxia and hypoxia (12% O2 ), in a randomized block cross-over single-blinded design. Middle cerebral artery (MCA) and posterior cerebral artery (PCA) blood velocities and corresponding CDO2 were determined using bilateral transcranial Doppler ultrasound. In hypoxia, MCA DO2 was reduced during the Go/No-Go task (P = 0.010 vs. normoxia, main effect), and PCA DO2 was attenuated during memorization (P = 0.005 vs. normoxia) and recall components (P = 0.002 vs. normoxia) in the memory task. The accuracy of the memory task was also impaired in hypoxia (P = 0.049 vs. normoxia). In contrast, hypoxia failed to alter reaction time (P = 0.19 vs. normoxia) or accuracy (P = 0.20 vs. normoxia) during the Go/No-Go task, indicating that selective attention and response inhibition were preserved. Hypoxia did not affect cerebral blood flow or corresponding CDO2 responses to cognitive activity (P > 0.05 vs. normoxia). Collectively, these findings highlight the differential sensitivity of cognitive domains, with memory being selectively vulnerable in hypoxia. NEW FINDINGS: What is the central question of this study? We sought to examine the effects of acute hypoxia on central executive (selective attention and response inhibition) and non-executive (memory) performance and the extent to which impairments are potentially related to reductions in regional cerebral blood flow and oxygen delivery. What is the main finding and its importance? Memory was impaired in acute hypoxia, and this was accompanied by a selective reduction in posterior cerebral artery oxygen delivery. In contrast, selective attention and response inhibition remained well preserved. These findings suggest that memory is selectively vulnerable to hypoxia.
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Affiliation(s)
- Soichi Ando
- Graduate School of Informatics and EngineeringThe University of Electro‐CommunicationsTokyoJapan
| | - Hayato Tsukamoto
- Neurovascular Research Laboratory, Faculty of Life Sciences and EducationUniversity of South WalesPontypriddUK
- Faculty of Sports ScienceWaseda UniversitySaitamaJapan
| | - Benjamin S. Stacey
- Neurovascular Research Laboratory, Faculty of Life Sciences and EducationUniversity of South WalesPontypriddUK
| | - Takuro Washio
- Department of Biomedical EngineeringToyo UniversityKawagoeSaitamaJapan
| | - Thomas S. Owens
- Neurovascular Research Laboratory, Faculty of Life Sciences and EducationUniversity of South WalesPontypriddUK
| | - Thomas A. Calverley
- Neurovascular Research Laboratory, Faculty of Life Sciences and EducationUniversity of South WalesPontypriddUK
| | - Lewis Fall
- Neurovascular Research Laboratory, Faculty of Life Sciences and EducationUniversity of South WalesPontypriddUK
| | - Christopher J. Marley
- Neurovascular Research Laboratory, Faculty of Life Sciences and EducationUniversity of South WalesPontypriddUK
| | - Angelo Iannetelli
- Neurovascular Research Laboratory, Faculty of Life Sciences and EducationUniversity of South WalesPontypriddUK
| | | | - Shigehiko Ogoh
- Neurovascular Research Laboratory, Faculty of Life Sciences and EducationUniversity of South WalesPontypriddUK
- Department of Biomedical EngineeringToyo UniversityKawagoeSaitamaJapan
| | - Damian M. Bailey
- Neurovascular Research Laboratory, Faculty of Life Sciences and EducationUniversity of South WalesPontypriddUK
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Villa BR, George AG, Shutt TE, Sullivan PG, Rho JM, Teskey GC. Postictal hypoxia involves reactive oxygen species and is ameliorated by chronic mitochondrial uncoupling. Neuropharmacology 2023; 238:109653. [PMID: 37422182 DOI: 10.1016/j.neuropharm.2023.109653] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2023] [Revised: 07/04/2023] [Accepted: 07/05/2023] [Indexed: 07/10/2023]
Abstract
Prolonged severe hypoxia follows brief seizures and represents a mechanism underlying several negative postictal manifestations without interventions. Approximately 50% of the postictal hypoxia phenomenon can be accounted for by arteriole vasoconstriction. What accounts for the rest of the drop in unbound oxygen is unclear. Here, we determined the effect of pharmacological modulation of mitochondrial function on tissue oxygenation in the hippocampus of rats after repeatedly evoked seizures. Rats were treated with mitochondrial uncoupler 2,4 dinitrophenol (DNP) or antioxidants. Oxygen profiles were recorded using a chronically implanted oxygen-sensing probe, before, during, and after seizure induction. Mitochondrial function and redox tone were measured using in vitro mitochondrial assays and immunohistochemistry. Postictal cognitive impairment was assessed using the novel object recognition task. Mild mitochondrial uncoupling by DNP raised hippocampal oxygen tension and ameliorated postictal hypoxia. Chronic DNP also lowered mitochondrial oxygen-derived reactive species and oxidative stress in the hippocampus during postictal hypoxia. Uncoupling the mitochondria exerts therapeutic benefits on postictal cognitive dysfunction. Finally, antioxidants do not affect postictal hypoxia, but protect the brain from associated cognitive deficits. We provided evidence for a metabolic component of the prolonged oxygen deprivation that follow seizures and its pathological sequelae. Furthermore, we identified a molecular underpinning of this metabolic component, which involves excessive oxygen conversion into reactive species. Mild mitochondrial uncoupling may be a potential therapeutic strategy to treat the postictal state where seizure control is absent or poor.
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Affiliation(s)
- Bianca R Villa
- Hotchkiss Brain Institute, Cumming School of Medicine, University of Calgary, Calgary, AB, T2N 4N1, Canada; Department of Cell Biology and Anatomy, University of Calgary, Calgary, AB, T2N 4N1, Canada.
| | - Antis G George
- Hotchkiss Brain Institute, Cumming School of Medicine, University of Calgary, Calgary, AB, T2N 4N1, Canada; Department of Cell Biology and Anatomy, University of Calgary, Calgary, AB, T2N 4N1, Canada.
| | - Timothy E Shutt
- Hotchkiss Brain Institute, Cumming School of Medicine, University of Calgary, Calgary, AB, T2N 4N1, Canada; Departments of Medical Genetics and Biochemistry & Molecular Biology, Snyder Institute for Chronic Diseases, Cumming School of Medicine, University of Calgary, Calgary, AB, T2N 4N1, Canada; Alberta Children's Hospital Research Institute, Cumming School of Medicine, University of Calgary, Calgary, AB, T2N 4N1, Canada.
| | - Patrick G Sullivan
- Department of Anatomy and Neurobiology, and Spinal Cord and Brain Injury Research Center, University of Kentucky, Lexington, KY, 40536, USA.
| | - Jong M Rho
- Department of Neurosciences, Pediatrics and Pharmacology, University of California San Diego, Rady Children's Hospital, San Diego, CA, 92037, USA.
| | - G Campbell Teskey
- Hotchkiss Brain Institute, Cumming School of Medicine, University of Calgary, Calgary, AB, T2N 4N1, Canada; Department of Cell Biology and Anatomy, University of Calgary, Calgary, AB, T2N 4N1, Canada; Alberta Children's Hospital Research Institute, Cumming School of Medicine, University of Calgary, Calgary, AB, T2N 4N1, Canada.
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6
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Chu YT, Chen BH, Chen HH, Lee JC, Kuo TJ, Chiu HC, Lu WH. Hypoxia-Induced Kidney Injury in Newborn Rats. TOXICS 2023; 11:260. [PMID: 36977025 PMCID: PMC10053593 DOI: 10.3390/toxics11030260] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/13/2023] [Revised: 03/08/2023] [Accepted: 03/10/2023] [Indexed: 06/18/2023]
Abstract
Exposure to hypoxia during the early postnatal period can have adverse effects on vital organs. Neonatal Sprague-Dawley rats housed in a hypoxic chamber were compared to those in a normoxic chamber from postnatal days 0 to 7. Arterial blood was collected to evaluate renal function and hypoxia. Kidney morphology and fibrosis were evaluated using staining methods and immunoblotting. In the kidneys of the hypoxic group, protein expressions of hypoxia-inducible factor-1 were higher than those in the normoxic group. Hypoxic rats had higher levels of hematocrit, serum creatinine, and lactate than normoxic rats. Body weight was reduced, and protein loss of kidney tissue was observed in hypoxic rats compared to normoxic rats. Histologically, hypoxic rats showed glomerular atrophy and tubular injury. Renal fibrosis with collagen fiber deposition was observed in the hypoxic group. The expression of nicotinamide adenine dinucleotide phosphate oxidases was enhanced in the kidneys of hypoxic rats. Proteins involved in apoptosis were upregulated in the kidneys of hypoxic rats. An increase in the expression of pro-inflammatory cytokines was also observed in the kidneys of hypoxic rats. Hypoxic kidney injury in neonatal rats was associated with oxidative stress, inflammation, apoptosis, and fibrosis.
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Affiliation(s)
- Yi-Ting Chu
- Department of Pediatrics, Kaohsiung Veterans General Hospital, Kaohsiung 813414, Taiwan
| | - Bo-Hau Chen
- Department of Pediatrics, Taoyuan Armed Forces General Hospital, Taoyuan 32551, Taiwan
| | - Hsin-Hung Chen
- Department of Medical Education and Research, Kaohsiung Veterans General Hospital, Kaohsiung 813414, Taiwan
| | - Jui-Chen Lee
- Department of Pediatrics, Kaohsiung Veterans General Hospital, Kaohsiung 813414, Taiwan
| | - Tzu-Jiun Kuo
- Department of Medical Education and Research, Kaohsiung Veterans General Hospital, Kaohsiung 813414, Taiwan
| | - Hsiang-Chin Chiu
- Department of Pediatrics, Pingtung Veterans General Hospital, Pingtung 91245, Taiwan
| | - Wen-Hsien Lu
- Department of Pediatrics, Kaohsiung Veterans General Hospital, Kaohsiung 813414, Taiwan
- School of Medicine, National Yang-Ming University, Taipei 11221, Taiwan
- Institute of Biomedical Sciences, National Sun Yat-sen University, Kaohsiung 804201, Taiwan
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7
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Differences in mitochondrial function between brain and heart of senile rats exposed to acute hypobaric hypoxia. Role of nitric oxide. Exp Gerontol 2023; 173:112100. [PMID: 36690048 DOI: 10.1016/j.exger.2023.112100] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2022] [Revised: 01/17/2023] [Accepted: 01/19/2023] [Indexed: 01/22/2023]
Abstract
Rat brain and heart display different endogenous protective responses against hypobaric hypoxia in an age-dependent way. The aim of the present work was to evaluate the effects of acute hypobaric hypoxia (HH, 48 h) on brain and heart mitochondrial function as well as the participation of nitric oxide (NO) in old rats (22-month old). Cortical mitochondria from rats exposed to HH decreased respiratory rates (37 %, state 3) and membrane potential (20 %), but NO and H2O2 production increased by 48 %, and 23 %, respectively. Hippocampal mitochondria preserved O2 consumption and H2O2 production, decreased membrane potential (18 %) and increased NO production (46 %). By contrast, HH decreased NO production (53 %) in mitochondria from left heart ventricles associated with increased cytochrome oxidase activity (39 %) and decreased NADPH oxidase activity (31 %). Also, a tendency to increase complex I-III (24 %) and complex II-III (65 %) activity was observed. In conclusion, after HH hippocampal and cortical mitochondria showed mild uncoupling and increased NO production. However, only the hippocampus preserved O2 consumption and H2O2 levels. Interestingly, heart mitochondria showed a decreased ROS production through increased cytochrome oxidase activity associated with a decrease in NO production. This may be interpreted as a self-protective mechanism against hypoxia.
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Cui J, Ma Q, Zhang C, Li Y, Liu J, Xie K, Luo E, Zhai M, Tang C. Keratin 18 Depletion as a Possible Mechanism for the Induction of Apoptosis and Ferroptosis in the Rat Hippocampus After Hypobaric Hypoxia. Neuroscience 2023; 513:64-75. [PMID: 36395917 DOI: 10.1016/j.neuroscience.2022.11.009] [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: 07/08/2022] [Revised: 11/03/2022] [Accepted: 11/08/2022] [Indexed: 11/16/2022]
Abstract
Memory impairment is one of the neuropsychological effects of hypobaric hypoxia (HH), which can be associated with programmed cell death, such as apoptosis and ferroptosis. Emerging evidence indicates crosstalk between apoptosis and ferroptosis, while the crosstalk between HH-induced apoptosis and ferroptosis in the hippocampus has not been clarified. Here, microarray profiles were extracted to analyze the differentially expressed genes with and without HH exposure, and keratin 18 (Krt18) was found to be a potential gene related to both apoptosis and ferroptosis. Then, we conducted morphological observations that showed that apoptosis and ferroptosis coexisted in the rat hippocampus after HH exposure. Combined with the real-time q-PCR analysis, the mRNA expression of Krt18 decreased significantly after HH exposure for 1 day and 3 days, and Mapk10 (JNK3) was upregulated at the corresponding time points. After exposure for 7 days, Krt18 and JNK3 showed no significant change. In conclusion, Krt18 may regulate apoptosis and ferroptosis simultaneously, possibly via the JNK signaling pathway, which might provide a potential central target for apoptosis and ferroptosis in hippocampal injury after HH exposure.
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Affiliation(s)
- Jinxiu Cui
- Department of Military Medical Equipment and Metrology, School of Military Biomedical Engineering, Fourth Military Medical University, 710032 Xi'an, Shaanxi, PR China
| | - Qianqian Ma
- Department of Military Medical Equipment and Metrology, School of Military Biomedical Engineering, Fourth Military Medical University, 710032 Xi'an, Shaanxi, PR China; The College of Life Sciences, Northwest University, 710069 Xi'an, Shaanxi, PR China
| | - Chenxu Zhang
- Department of Military Medical Equipment and Metrology, School of Military Biomedical Engineering, Fourth Military Medical University, 710032 Xi'an, Shaanxi, PR China
| | - Yuanzhe Li
- Department of Military Medical Equipment and Metrology, School of Military Biomedical Engineering, Fourth Military Medical University, 710032 Xi'an, Shaanxi, PR China
| | - Juan Liu
- Department of Military Medical Equipment and Metrology, School of Military Biomedical Engineering, Fourth Military Medical University, 710032 Xi'an, Shaanxi, PR China
| | - Kangning Xie
- Department of Military Medical Equipment and Metrology, School of Military Biomedical Engineering, Fourth Military Medical University, 710032 Xi'an, Shaanxi, PR China
| | - Erping Luo
- Department of Military Medical Equipment and Metrology, School of Military Biomedical Engineering, Fourth Military Medical University, 710032 Xi'an, Shaanxi, PR China
| | - Mingming Zhai
- Department of Military Medical Equipment and Metrology, School of Military Biomedical Engineering, Fourth Military Medical University, 710032 Xi'an, Shaanxi, PR China.
| | - Chi Tang
- Department of Military Medical Equipment and Metrology, School of Military Biomedical Engineering, Fourth Military Medical University, 710032 Xi'an, Shaanxi, PR China; Shaanxi Provincial Key Laboratory of Bioelectromagnetic Detection and Intelligent Perception, School of Military Biomedical Engineering, Fourth Military Medical University, 710032 Xi'an, Shaanxi, PR China.
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Yoo JY, Kim HB, Lee YJ, Kim YJ, Yoo SY, Choi Y, Lee MJ, Kim IS, Baik TK, Lee JH, Woo RS. Neuregulin-1 reverses anxiety-like behavior and social behavior deficits induced by unilateral micro-injection of CoCl 2 into the ventral hippocampus (vHPC). Neurobiol Dis 2023; 177:105982. [PMID: 36592864 DOI: 10.1016/j.nbd.2022.105982] [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: 09/23/2022] [Revised: 11/28/2022] [Accepted: 12/28/2022] [Indexed: 12/31/2022] Open
Abstract
Neuregulin-1 (NRG1) is an epidermal growth factor family member with essential roles in the developing and adult nervous systems. In recent years, establishing evidence has collectively suggested that NRG1 is a new modulator of central nervous system (CNS) injury and disease, with multifaceted roles in neuroprotection, remyelination, neuroinflammation, and other repair mechanisms. NRG1 signaling exerts its effects via the tyrosine kinase receptors ErbB2-ErbB4. The NRG1/ErbB network in CNS pathology and repair has evolved, primarily in recent years. In the present study, we demonstrated that a unilateral microinjection of CoCl2 into the ventral hippocampus (vHPC) induced hypoxic insult and led to anxiety-related behaviors and deficit sociability in mice. NRG1 treatment significantly alleviated the CoCl2-induced increase of hypoxic-related molecules and behavioral abnormalities. Furthermore, NRG1 reduced the CoCl2-induced neuroinflammation and neuronal deficits in the vHPC or primary hippocampal neurons in mice. Collectively, these results suggest that NRG1 ameliorates hypoxia by alleviating synaptic deficits and behavioral abnormalities of the CoCl2-induced vHPC hypoxic model.
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Affiliation(s)
- Ji-Young Yoo
- Department of Anatomy and Neuroscience, College of Medicine, Eulji University, Daejeon 34824, Republic of Korea
| | - Han-Byeol Kim
- Department of Anatomy and Neuroscience, College of Medicine, Eulji University, Daejeon 34824, Republic of Korea
| | - Ye-Ji Lee
- Department of Anatomy and Neuroscience, College of Medicine, Eulji University, Daejeon 34824, Republic of Korea
| | - Yu-Jin Kim
- Department of Anatomy and Neuroscience, College of Medicine, Eulji University, Daejeon 34824, Republic of Korea
| | - Seung-Yeon Yoo
- Department of Anatomy and Neuroscience, College of Medicine, Eulji University, Daejeon 34824, Republic of Korea
| | - Yoori Choi
- Department of Nuclear Medicine, Seoul National University Hospital, Seoul 03080, Republic of Korea
| | - Mi-Jo Lee
- Department of Radiation Oncology, Eulji University Hospital, Daejeon 35233, Republic of Korea
| | - In-Sik Kim
- Department of Biomedical Laboratory Science, School of Medicine and Department of Senior Healthcare, Graduate School, Eulji University, Uijeongbu 11759, Republic of Korea
| | - Tai-Kyoung Baik
- Department of Anatomy and Neuroscience, College of Medicine, Eulji University, Daejeon 34824, Republic of Korea
| | - Jun-Ho Lee
- Department of Emergency Medical Technology, Daejeon University, Daejeon 34520, Republic of Korea.
| | - Ran-Sook Woo
- Department of Anatomy and Neuroscience, College of Medicine, Eulji University, Daejeon 34824, Republic of Korea.
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Legaz I, Barrera-Pérez E, Sibón A, Martínez-Díaz F, Pérez-Cárceles MD. Combining Oxidative Stress Markers and Expression of Surfactant Protein A in Lungs in the Diagnosis of Seawater Drowning. LIFE (BASEL, SWITZERLAND) 2023; 13:life13010159. [PMID: 36676108 PMCID: PMC9863041 DOI: 10.3390/life13010159] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/22/2022] [Revised: 12/06/2022] [Accepted: 12/21/2022] [Indexed: 01/06/2023]
Abstract
BACKGROUND AND OBJECTIVES The diagnosis of seawater drowning (SWD) remains one of the most complex and contentious. It is one of the leading causes of unintentional death around the world. In most cases, the forensic pathologist must reach an accurate diagnosis from the autopsy findings and a series of complementary tests such as histopathological, biological, and chemical studies. Despite the lung being the most affected organ in death by submersion, there are few studies on this type of death's impact on this organ. The aim was to investigate human lung cadavers of forensic cases due to different causes of death, the concentration of the oxidative stress markers malondialdehyde (MDA) and γ-glutamyl-l-cysteinyl glycine (GSH), and the relationship with the expression of surfactant protein A (SP-A) to try to discriminate SWD from other types of causes of death. MATERIALS AND METHODS A total of 93 forensic autopsy cases were analyzed. Deaths were classified into three major groups based on the scene, cause of death, and autopsy findings (external foam, frothy fluid in airways, overlapping medial edges of the lungs): (a) drowning in seawater (n = 35), (b) other asphyxia (n = 33), such as hangings (n = 23), suffocations (n = 6), and strangulation (n = 4), and (c) other causes (n = 25), such as multiple suffocations. Oxidative stress markers (MDA and GSH) and the immunohistochemical expression of SP-A were determined in both lungs. RESULTS MDA levels were statistically higher in both lungs in cases of SWD than in other causes of death (p = 0.023). Similarly, significantly higher levels of GSH were observed in SWD compared to the rest of the deaths (p = 0.002), which was more significant in the right lung. Higher immunohistochemical expression of SP-A was obtained in the cases of SWD than in the other causes of death, with higher levels in both lungs. The correlation analysis between the levels of oxidative stress (MDA and GSH) in the lung tissue and the expression level of SP-A showed positive and significant results in SWD, both in the alveolar membrane and the alveolar space. CONCLUSIONS Determining the levels of MDA and GSH in lung tissue and the expression level of SP-A can be of great importance in diagnosing SWD and the circumstances of death. A better understanding of the physiology of submersion is essential for its possible repercussions in adopting measures in the approach to patients who have survived a submersion process. It is also necessary for forensic pathology to correctly interpret the events that lead to submersion.
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Affiliation(s)
- Isabel Legaz
- Department of Legal and Forensic Medicine, Biomedical Research Institute (IMIB), Regional Campus of International Excellence “Campus Mare Nostrum”, Faculty of Medicine, University of Murcia, 30110 Murcia, Spain
- Correspondence: ; Tel.: +34-868883957; Fax: +34-868834307
| | | | - Agustín Sibón
- Institute of Legal Medicine and Forensic Science, 11010 Cádiz, Spain
| | | | - María D. Pérez-Cárceles
- Department of Legal and Forensic Medicine, Biomedical Research Institute (IMIB), Regional Campus of International Excellence “Campus Mare Nostrum”, Faculty of Medicine, University of Murcia, 30110 Murcia, Spain
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11
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Eaton L, Wang T, Roy M, Pamenter ME. Naked Mole-Rat Cortex Maintains Reactive Oxygen Species Homeostasis During In Vitro Hypoxia or Ischemia and Reperfusion. Curr Neuropharmacol 2023; 21:1450-1461. [PMID: 35339183 PMCID: PMC10324332 DOI: 10.2174/1570159x20666220327220929] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2021] [Revised: 03/07/2022] [Accepted: 03/23/2022] [Indexed: 11/22/2022] Open
Abstract
Neuronal injury during acute hypoxia, ischemia, and following reperfusion are partially attributable to oxidative damage caused by deleterious fluctuations of reactive oxygen species (ROS). In particular, mitochondrial superoxide (O2•-) production is believed to upsurge during lowoxygen conditions and also following reperfusion, before being dismutated to H2O2 and released into the cell. However, disruptions of redox homeostasis may be beneficially attenuated in the brain of hypoxia-tolerant species, such as the naked mole-rat (NMR, Heterocephalus glaber). As such, we hypothesized that ROS homeostasis is better maintained in the brain of NMRs during severe hypoxic/ ischemic insults and following reperfusion. We predicted that NMR brain would not exhibit substantial fluctuations in ROS during hypoxia or reoxygenation, unlike previous reports from hypoxiaintolerant mouse brain. To test this hypothesis, we measured cortical ROS flux using corrected total cell fluorescence measurements from live brain slices loaded with the MitoSOX red superoxide (O2•-) indicator or chloromethyl 2',7'-dichlorodihydrofluorescein diacetate (CM-H2-DCFDA; which fluoresces with whole-cell hydrogen peroxide (H2O2) production) during various low-oxygen treatments, exogenous oxidative stress, and reperfusion. We found that NMR cortex maintained ROS homeostasis during low-oxygen conditions, while mouse cortex exhibited a ~40% increase and a ~30% decrease in mitochondrial O2•- and cellular H2O2 production, respectively. Mitochondrial ROS homeostasis in NMRs was only disrupted following sodium cyanide application, which was similarly observed in mice. Our results suggest that NMRs have evolved strategies to maintain ROS homeostasis during acute bouts of hypoxia and reoxygenation, potentially as an adaptation to life in an intermittently hypoxic environment.
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Affiliation(s)
- Liam Eaton
- Department of Biology, University of Ottawa, Ottawa, ON, Canada
| | - Tina Wang
- Department of Biology, University of Ottawa, Ottawa, ON, Canada
| | - Maria Roy
- Department of Biology, University of Ottawa, Ottawa, ON, Canada
| | - Matthew E. Pamenter
- Department of Biology, University of Ottawa, Ottawa, ON, Canada
- University of Ottawa Brain and Mind Research Institute, Ottawa, ON, Canada
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12
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Jing L, Wu N, Zhang J, Da Q, Ma H. Protective effect of 5,6,7,8-Tetrahydroxyflavone on high altitude cerebral edema in rats. Eur J Pharmacol 2022; 928:175121. [PMID: 35777443 DOI: 10.1016/j.ejphar.2022.175121] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2022] [Revised: 06/17/2022] [Accepted: 06/21/2022] [Indexed: 11/03/2022]
Abstract
High altitude cerebral edema (HACE) is a potentially life-threatening disease encountered at high altitudes. However, effective methods for HACE prophylaxis are limited. Convincing evidence confirms that oxidative stress induced by hypobaric hypoxia (HH) is one of the main factors that account for the development of HACE. 5,6,7,8-Tetrahydroxyflavone (THF), a flavone with four consecutive OH groups in ring A, exhibited excellent antioxidant activity in vitro and could attenuate HH induced injury in vivo. The aim of this study was to investigate the protective effect of THF against HACE and its underlying mechanisms. THF administration significantly suppressed HH induced oxidative stress by reducing the formation of hydrogen peroxide and malondialdehyde, by increasing the levels of glutathione and superoxide dismutase in brain tissue. Simultaneously, THF administration inhibited inflammatory responses by decreasing the levels of tumor necrosis factor-α, interleukin-1β, and interleukin-6 in serum and brain tissue. In addition, THF administration mitigated the energy metabolism disorder induced by HACE as evidenced by decreased levels of lactic acid, lactate dehydrogenase and pyruvate kinase as well as increased ATP levels and ATPase activities. Furthermore, THF administration decreased the expression of matrix metalloproteinase-9, aquaporin 4, hypoxia-inducible factor-1α and vascular endothelial growth factor, which attenuated blood-brain barrier (BBB) disruption and brain edema. Additionally, THF administration improved HACE induced cognitive dysfunction. These results show that THF is a promising agent in the prevention and treatment of HACE.
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Affiliation(s)
- Linlin Jing
- Center for Brain Science, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, 710061, China; Department of Pharmacy, The 940th Hospital of Joint Logistics Support Force of PLA, Lanzhou, Gansu, 730050, China.
| | - Ningzi Wu
- Department of Pharmacy, The 940th Hospital of Joint Logistics Support Force of PLA, Lanzhou, Gansu, 730050, China
| | - Jie Zhang
- Department of Pharmacy, The 940th Hospital of Joint Logistics Support Force of PLA, Lanzhou, Gansu, 730050, China
| | - Qingyue Da
- Center for Brain Science, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, 710061, China; Department of Pharmacy, The 940th Hospital of Joint Logistics Support Force of PLA, Lanzhou, Gansu, 730050, China
| | - Huiping Ma
- Department of Pharmacy, The 940th Hospital of Joint Logistics Support Force of PLA, Lanzhou, Gansu, 730050, China.
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13
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Jiang S, Fan F, Yang L, Chen K, Sun Z, Zhang Y, Cairang N, Wang X, Meng X. Salidroside attenuates high altitude hypobaric hypoxia-induced brain injury in mice via inhibiting NF-κB/NLRP3 pathway. Eur J Pharmacol 2022; 925:175015. [PMID: 35561751 DOI: 10.1016/j.ejphar.2022.175015] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2021] [Revised: 04/21/2022] [Accepted: 05/04/2022] [Indexed: 12/18/2022]
Abstract
Salidroside (Sal), an active ingredient from Rhodiola crenulate, has been reported to exert neuroprotection in cerebral injury from hypobaric hypoxia (HH) at high altitude. However, it remains to be understood whether its protective effects are related to inflammation suppression. In the present work, we aimed to reveal the mechanism of Sal attenuating HH-induced brain injury in mice caused by an animal hypobaric and hypoxic chamber. Our results provided that Sal could attenuate HH-evoked pathological injury and oxidative stress response by decreasing the content of ROS and MDA, and elevating the activities of SOD and GSH-Px. Sal treatment could partly enhance the energy metabolism, evidenced by increasing the activities of Na+-K+-ATPase, Ca2+-Mg2+-ATPase, ATP, SDH, HK and PK, while decreasing the release of LDH and LD. Meanwhile, Sal administration reversed the degradation of tight junction proteins ZO-1, Occludin and Claudin-5. Further, the increased levels of TNF-α, IL-1β and IL-6 were confined with Sal administration under the HH condition. Importantly, Sal could downregulate the proteins expression of p-NF-κB-p65, NLRP3, cleaved-Caspase-1 and ASC. Sal also decreased the protein expression of iNOS and COX2 with the increased CD206 and Arg1 expression. Taken together, these data provided that the inhibited NF-κB/NLRP3 pathway by Sal could attenuate HH-induced cerebral oxidative stress injury, inflammatory responses and the blood brain barrier (BBB) damage, attributing to the improved energy metabolism and the microglial phenotype of anti-inflammatory M2. The findings suggested that Sal was expected to be a promising anti-inflammatory agent for high altitude HH-induced brain injury.
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Affiliation(s)
- Shengnan Jiang
- School of Pharmacy, and Research Institute of Integrated TCM & Western Medicine, Chengdu University of Traditional Chinese Medicine, Chengdu, Sichuan, 611137, China
| | - Fangfang Fan
- School of Ethnic Medicine, Chengdu University of Traditional Chinese Medicine, Chengdu, Sichuan, 611137, China
| | - Lu Yang
- School of Pharmacy, and Research Institute of Integrated TCM & Western Medicine, Chengdu University of Traditional Chinese Medicine, Chengdu, Sichuan, 611137, China
| | - Ke Chen
- School of Pharmacy, and Research Institute of Integrated TCM & Western Medicine, Chengdu University of Traditional Chinese Medicine, Chengdu, Sichuan, 611137, China
| | - Zhihao Sun
- School of Basic Medicine, Chengdu University of Traditional Chinese Medicine, Chengdu, Sichuan, 611137, China
| | - Yi Zhang
- School of Ethnic Medicine, Chengdu University of Traditional Chinese Medicine, Chengdu, Sichuan, 611137, China; Ethnic Medicine Academic Heritage Innovation Research Center, Chengdu University of Traditional Chinese Medicine, Chengdu, Sichuan, 611137, China
| | - Nanjia Cairang
- University of Tibetan Medicine, Lasa, Tibet, 850000, China.
| | - Xiaobo Wang
- School of Pharmacy, and Research Institute of Integrated TCM & Western Medicine, Chengdu University of Traditional Chinese Medicine, Chengdu, Sichuan, 611137, China; State Key Laboratory of Southwestern Chinese Medicine Resources, Innovative Institute of Chinese Medicine and Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, Sichuan, 611137, China.
| | - Xianli Meng
- School of Pharmacy, and Research Institute of Integrated TCM & Western Medicine, Chengdu University of Traditional Chinese Medicine, Chengdu, Sichuan, 611137, China; State Key Laboratory of Southwestern Chinese Medicine Resources, Innovative Institute of Chinese Medicine and Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, Sichuan, 611137, China.
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14
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Tarhan D, Dursun Ş. The effects of copper, zinc and bicarbonate in blood, kidney and liver in rats under intermittent hypobaric hypoxia. J Trace Elem Med Biol 2022; 71:126951. [PMID: 35176577 DOI: 10.1016/j.jtemb.2022.126951] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/14/2021] [Revised: 01/27/2022] [Accepted: 02/10/2022] [Indexed: 11/23/2022]
Abstract
Intermittent hypobaric hypoxia is defined as to be below the normal values of partial oxygen pressure at tissue due to hypoxia periods. It can lead to increased reactive oxygen species which causes oxidative damage to DNA, lipids and proteins. The effect of antioxidant defense mechanism varies from tissue to tissue under hypoxic conditions. The aim of our study was to investigate the effects of bicarbonate, copper and zinc on antioxidant statue in blood, liver and kidney tissues under hypoxia. Forty adult male Sprague Dawley rats randomly divided into five groups (Control, Hypoxia, H+Zn, H+Cu and H+HCO3). Rats were exposed hypoxia a daily 8 h for 5 days/week until completing 3 weeks in hypoxia cabin at a simulated pressure of 400-500 mmHg. The animals of H+Zn, H+Cu and H+HCO3 experimental groups received through drinking water 30 mg/kg Zn, 7 mg/kg Cu and 3 mmol/kg NaHCO3, respectively. At the samples of blood, liver and kidney taken from rats at the end of experiment were measured the concentrations of Zn and Cu by ICP-OES device. The values of malondialdehyde (MDA) and glutathione (GSH) and the bicarbonate concentration were also obtained spectrophotometer and ABL800 devices, respectively. According to statistical evaluated, the kidney GSH values showed a significant increase in all experimental groups (p < 0.01). Increase in the plasma GSH values is also due to kidney cells. As a result of our investigation it is seen that the antioxidant response of kidney cells to hypoxia are more effective than applied dose levels of zinc, copper and bicarbonate ions at the study.
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Affiliation(s)
- Duygu Tarhan
- Istanbul University-Cerrahpasa, Cerrahpasa Faculty of Medicine, Department of Biophysics, Istanbul, Turkey.
| | - Şefik Dursun
- Uskudar University, Medical Faculty, Department of Biophysics, Istanbul, Turkey.
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15
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Zhang X, Huang S, Li S, Wang W. Effects of Altitude on the Digestion Performance, Serum Antioxidative Characteristics, Rumen Fermentation Parameters, and Rumen Bacteria of Sanhe Heifers. Front Microbiol 2022; 13:875323. [PMID: 35572662 PMCID: PMC9097872 DOI: 10.3389/fmicb.2022.875323] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2022] [Accepted: 04/04/2022] [Indexed: 12/15/2022] Open
Abstract
The production efficiency of dairy cows is affected by altitude, with lower efficiency reported at higher altitudes. However, only a few studies have investigated the digestion performance, serum antioxidative characteristics, rumen fermentation performance, and rumen bacteria of Sanhe heifers at different altitudes. Therefore, in this study, we explored the effects of altitude on these aspects of Sanhe heifers. We evaluated the effects of altitude on the apparent digestibility of nutrients, serum antioxidative characteristics, rumen fermentation parameters, and rumen bacteria in Sanhe heifers. Twenty Sanhe heifers from the same herd and managed with the same practice were used. However, the heifers were from two regions in China: 10 were fed in Hulunbuir City, Inner Mongolia Autonomous Region (119°57'E, 47°17'N; approximately 700 m altitude, named LA) and 10 were fed in Lhasa City, Tibet Autonomous Region (91°06'E, 29°36'N; approximately 3,750 m altitude, named HA). The dry matter intake (DMI), average daily gain (ADG), and DMI/ADG ratio were higher (p < 0.05) in LA than in HA heifers, whereas the apparent total tract digestibility of dry matter, ether extract, and crude proteins were higher (p < 0.05) in the HA group. Compared with LA heifers, the HA heifers showed decreased (p < 0.05) serum concentrations of superoxide dismutase and glutathione peroxidase and increased serum concentration of hydrogen peroxide (p < 0.05). Altitude did not significantly affect the volatile fatty acid concentration in the rumen, but HA presented a lower acetate-to-propionate ratio than LA. The 16S rRNA gene sequencing data showed that altitude significantly affected the rumen microbial composition. At the phylum level, the HA heifers presented a lower relative abundance of Actinobacteria (p < 0.05) and higher relative abundance of Spirochaetae (p < 0.05) than the LA heifers. The correlation analysis revealed that the operational taxonomic units belonging to the genus Prevotella_1 were correlated (p < 0.05) with altitude and DMI. The results indicate that altitude can influence the apparent digestibility of nutrients, serum antioxidant capacity, rumen fermentation, and rumen bacteria composition of Sanhe heifers. The study provides insights into the adaptation mechanism of Sanhe heifers to high-altitude areas.
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Affiliation(s)
| | | | - Shengli Li
- State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing, China
| | - Wei Wang
- State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing, China
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16
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Zou X, Yang H, Li Q, Li N, Hou Y, Wang X, Meng X, Yu J, Zhang Y, Tang C, Kuang T. Protective Effect of Brassica rapa Polysaccharide against Acute High-Altitude Hypoxia-Induced Brain Injury and Its Metabolomics. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2022; 2022:3063899. [PMID: 39282147 PMCID: PMC11401678 DOI: 10.1155/2022/3063899] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/08/2021] [Revised: 02/24/2022] [Accepted: 03/15/2022] [Indexed: 09/18/2024]
Abstract
Brassica rapa L., a traditional Tibetan medicine, has been wildly used for treating plateau disease. Polysaccharide is an important chemical component in B. rapa. The present study aimed to evaluate the effect of B. rapa polysaccharide (BRP) against acute high-altitude hypoxia (AHH) induced brain injury and its metabolic mechanism. The rats were randomly divided into six groups: control group, AHH group, Hongjingtian oral liquid group, and three BRP groups (38, 75, and 150 mg/kg/d). Serum levels of superoxide dismutase (SOD), malondialdehyde (MDA), glutathione (GSH), oxidized glutathione (GSSG), and lactate dehydrogenase (LDH) were detected by commercial biochemical kits. Hippocampus and cortex histopathological changes were observed by H&E staining and Nissl staining. Neuronal apoptosis was observed by TUNEL staining. The protein and gene expression of Caspase-3, Bax, Bcl-2, p-PI3K, PI3K, p-Akt, Akt, HIF-1α, microRNA 210, ISCU1/2, and COX10 were detected by western blotting and qRT-PCR. Then, a brain metabolomics method based on UPLC-Q-Exactive-MS was performed to discover potential biomarkers and analyze metabolic pathways. It was found that BRP decreased levels of MDA, LDH, and GSSG, increased GSH and SOD, reduced the pathological changes, inhibited apoptosis, and activated the PI3K/Akt/HIF-1α signaling pathway as evidenced by increased phosphorylation of PI3K and Akt, enhanced protein expression of HIF-1α and gene levels of microRNA210, ISCU1/2, and COX10. Furthermore, 15 endogenous potential biomarkers were identified in the brain through metabolomics analysis. BRP can regulate 7 potential biomarkers and the corresponding metabolic pathways were mainly associated with pyruvate metabolism and glycolysis/gluconeogenesis. Collectively, BRP has a clear protective effect on AHH-induced brain injury and its mechanisms may be related to ameliorate oxidative stress injury, inhibit apoptosis by activating PI3K/Akt/HIF-1α signaling pathway, and reverse metabolic pathway disturbances.
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Affiliation(s)
- Xuemei Zou
- State Key Laboratory of Southwestern Chinese Medicine Resources, School of Ethnic Medicine, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, China
| | - Hailing Yang
- Innovative Institute of Chinese Medicine and Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, China
| | - Qiuyue Li
- Pharmacy Intravenous Admixture Services, The Affiliated Traditional Chinese Medicine Hospital of Southwest Medical University, Luzhou 646600, China
| | - Ning Li
- State Key Laboratory of Southwestern Chinese Medicine Resources, School of Ethnic Medicine, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, China
| | - Ya Hou
- School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, China
| | - Xiaobo Wang
- Innovative Institute of Chinese Medicine and Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, China
| | - Xianli Meng
- Innovative Institute of Chinese Medicine and Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, China
| | - Jia Yu
- State Key Laboratory of Southwestern Chinese Medicine Resources, School of Ethnic Medicine, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, China
| | - Yi Zhang
- State Key Laboratory of Southwestern Chinese Medicine Resources, School of Ethnic Medicine, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, China
| | - Ce Tang
- State Key Laboratory of Southwestern Chinese Medicine Resources, School of Ethnic Medicine, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, China
| | - Tingting Kuang
- State Key Laboratory of Southwestern Chinese Medicine Resources, School of Ethnic Medicine, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, China
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Neonatal Anesthesia and Oxidative Stress. Antioxidants (Basel) 2022; 11:antiox11040787. [PMID: 35453473 PMCID: PMC9026345 DOI: 10.3390/antiox11040787] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2022] [Revised: 04/13/2022] [Accepted: 04/14/2022] [Indexed: 02/04/2023] Open
Abstract
Neonatal anesthesia, while often essential for surgeries or imaging procedures, is accompanied by significant risks to redox balance in the brain due to the relatively weak antioxidant system in children. Oxidative stress is characterized by concentrations of reactive oxygen species (ROS) that are elevated beyond what can be accommodated by the antioxidant defense system. In neonatal anesthesia, this has been proposed to be a contributing factor to some of the negative consequences (e.g., learning deficits and behavioral abnormalities) that are associated with early anesthetic exposure. In order to assess the relationship between neonatal anesthesia and oxidative stress, we first review the mechanisms of action of common anesthetic agents, the key pathways that produce the majority of ROS, and the main antioxidants. We then explore the possible immediate, short-term, and long-term pathways of neonatal-anesthesia-induced oxidative stress. We review a large body of literature describing oxidative stress to be evident during and immediately following neonatal anesthesia. Moreover, our review suggests that the short-term pathway has a temporally limited effect on oxidative stress, while the long-term pathway can manifest years later due to the altered development of neurons and neurovascular interactions.
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Characterization of the Impacts of Living at High Altitude in Taif: Oxidative Stress Biomarker Alterations and Immunohistochemical Changes. Curr Issues Mol Biol 2022; 44:1610-1625. [PMID: 35723368 PMCID: PMC9164078 DOI: 10.3390/cimb44040110] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2022] [Revised: 04/05/2022] [Accepted: 04/06/2022] [Indexed: 11/17/2022] Open
Abstract
At high elevations, the human body experiences a number of pathological, physiological, and biochemical changes, all of which have adverse impacts on human health and organ vitality. This study aimed to investigate the alterations in the liver and kidney biomarkers, oxidative stress markers, gene expression, and cellular histology of rats maintained at high altitudes and normal sea level. A total of twenty male Wistar rats at 2 months of age were randomly assigned to two groups. The rats in group A were maintained at normal sea level in Jeddah, whereas rats in group B were maintained in an area in Taif 2600 m above sea level. After 2 months of housing, orbital blood samples were collected for the analysis of significant biochemical indicators of oxidative stress biomarkers of the liver and kidneys. Liver and kidney tissues from both groups were taken to examine the hepatorenal changes occurring at the biochemical, histological, immunohistochemical, and genetic levels. The results revealed substantial increases in the serum levels of liver and kidney biomarkers (GPT, GOT, urea, and creatinine) and decreases in the serum levels of antioxidant biomarkers (SOD, catalase, GSH, and NO). In parallel, the levels of the malondialdehyde (MDA) tissue damage marker and inflammatory cytokines (IL-1β, TNF-α, and IFN-γ) were increased in the high-altitude group compared to the normal sea level group. In addition, there were significant alterations in the oxidative and inflammatory status of rats that lived at high altitude, with considerable upregulation in the expression of hepatic VEGF, type 1 collagen, Cox-2, TNF-α, and iNOS as well as renal EPASI, CMYC, HIF-α, and EGLN-2 genes in the high-altitude group compared with controls housed at normal sea level. In conclusion, living at high altitude induces hepatorenal damage and biochemical and molecular alterations, all of which may serve as critical factors that must be taken into account for organisms living at high altitudes.
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Li X, Liu B, Yang J, Li G, Wen H, Zhang M, Li J, He F. DNA methylation in promoter region of immune related genes STAT3 and VEGFA and biochemical parameters change in muscle of Japanese flounder under acute hypoxia. DEVELOPMENTAL AND COMPARATIVE IMMUNOLOGY 2022; 129:104295. [PMID: 34662685 DOI: 10.1016/j.dci.2021.104295] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/04/2021] [Revised: 10/09/2021] [Accepted: 10/12/2021] [Indexed: 06/13/2023]
Abstract
Acute hypoxic stress can lead to immune response in fish, but the molecular mechanism of muscle immunity in fish under acute hypoxia are still unclear. In this study, we carried out the effect of signal transducer and activator of transcription3(STAT3) and vascular endothelial growth factor A(VEGFA) on muscle immune responses of Japanese flounder (Paralichthys olivaceus) during acute hypoxic stimulation (1.65 ± 0.28mg/L O2; 3h, 6h, 12h, 24h) and reoxygenation (7.30 ± 0.40mg/L O2; R12h, R24h, R48h). In situ hybridization (ISH) showed that STAT3 and VEGFA RNA were co-located in the skeletal muscle of Japanese flounder. Japanese flounder was seriously affected by hypoxia for 3h and 6h. The expression of STAT3 and VEGFA increased significantly. The methylation levels of STAT3 5'UTR region and VEGFA promoter region were significantly lower than those in normoxia group, which was negatively correlated with the expression levels of STAT3 and VEGFA. The enzyme activities (LDH, ALT, AST, ALP) changed significantly. In addition, enzyme-linked immunosorbent assay (ELISA) detected a positive correlation between serum VEGFA concentration and muscle VEGFA mRNA. The current study have shown that Japanese flounder responded to acute hypoxic stress at multiple metabolic levels by changing DNA methylation status and activating transcription factors such as HIF-1α, Nrf2 and STAT3. It is significant for the scientific development of aquaculture through analyzing the effects of hypoxia on biological immunity.
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Affiliation(s)
- Xiaohui Li
- Key Laboratory of Mariculture, Ocean University of China, Ministry of Education, Qingdao, 266003, PR China
| | - Binghua Liu
- Key Laboratory of Mariculture, Ocean University of China, Ministry of Education, Qingdao, 266003, PR China
| | - Jun Yang
- Key Laboratory of Mariculture, Ocean University of China, Ministry of Education, Qingdao, 266003, PR China
| | - Guangling Li
- Key Laboratory of Mariculture, Ocean University of China, Ministry of Education, Qingdao, 266003, PR China
| | - Haishen Wen
- Key Laboratory of Mariculture, Ocean University of China, Ministry of Education, Qingdao, 266003, PR China
| | - Meizhao Zhang
- Key Laboratory of Mariculture, Ocean University of China, Ministry of Education, Qingdao, 266003, PR China
| | - Jifang Li
- Key Laboratory of Mariculture, Ocean University of China, Ministry of Education, Qingdao, 266003, PR China
| | - Feng He
- Key Laboratory of Mariculture, Ocean University of China, Ministry of Education, Qingdao, 266003, PR China.
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A novel nitronyl nitroxide radical HPN-C6 attenuates brain damage in an acute hypobaric hypoxia mouse model through inhibition of the oxidative stress. Neurosci Lett 2022; 782:136650. [DOI: 10.1016/j.neulet.2022.136650] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2021] [Revised: 04/16/2022] [Accepted: 04/19/2022] [Indexed: 11/22/2022]
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Ranjan R, Amitabh, Prasad DN, Kohli E. Hypothermic preconditioning attenuates hypobaric hypoxia induced spatial memory impairment in rats. Behav Brain Res 2022; 416:113568. [PMID: 34499936 DOI: 10.1016/j.bbr.2021.113568] [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: 04/20/2021] [Revised: 08/09/2021] [Accepted: 09/02/2021] [Indexed: 11/02/2022]
Abstract
Hypobaric Hypoxia (HH) is known to cause oxidative stress in the brain that leads to spatial memory deficit and neurodegeneration. For decades therapeutic hypothermia is used to treat global and focal ischemia in preserving brain functions that proved to be beneficial in humans and rodents. Considering these previous reports, the present study was designed to establish the therapeutic potential of hypothermia preconditioning on HH induced spatial memory, biochemical and morphological changes in adult rats. Male Sprague Dawley rats were exposed to HH (7620 m, ~ 282 mmHg) for 1, 3 and 7 days with and without hypothermic preconditioning. Spatial learning memory was assessed by Morris water maze (MWM) test along with evaluation of hippocampal pyramidal neuron damage by histological study. Oxidative stress was measured by studying the levels of nitric oxide (NO), reactive oxygen species (ROS), lipid peroxidation (LPO), oxidized and reduced glutathione (GSSG and GSH). Results of MWM test indicated prolonged path length and latency to reach the platform in HH groups that regained to normal in cold pre-treated groups. A likely neurodegeneration was evident in HH groups that lessen in the cold pre-treated groups. Hypothermic preconditioning prevented spatial memory impairment and neurodegeneration in animals subjected to HH via decreasing the NO, ROS and LPO compared to control animals. The GSH level and GSH/GSSG ratio was found to be higher in preconditioned animals as compared to respective HH exposed animals, indicative of redox scavenging and restoration of hippocampal neuronal structure as well as spatial memory. Therefore, hypothermic preconditioning improves spatial memory deficit by reducing HH induced oxidative stress and hippocampal neurodegeneration, hence can be used as a multi-target prophylactic measure to combat HH induced neurodegeneration.
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Affiliation(s)
- Rahul Ranjan
- Neurobiology Division, Defence Institute of Physiology and Allied Sciences, Delhi 110054 India
| | - Amitabh
- Neurobiology Division, Defence Institute of Physiology and Allied Sciences, Delhi 110054 India
| | - Dipti N Prasad
- Neurobiology Division, Defence Institute of Physiology and Allied Sciences, Delhi 110054 India
| | - Ekta Kohli
- Neurobiology Division, Defence Institute of Physiology and Allied Sciences, Delhi 110054 India.
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Choudhary R, Kumar M, Katyal A. 12/15-Lipoxygenase debilitates mitochondrial health in intermittent hypobaric hypoxia induced neuronal damage: An in vivo study. Redox Biol 2022; 49:102228. [PMID: 34979449 PMCID: PMC8728585 DOI: 10.1016/j.redox.2021.102228] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2021] [Revised: 12/20/2021] [Accepted: 12/29/2021] [Indexed: 12/31/2022] Open
Abstract
High altitude cerebral edema does not fall in routine definition of hypoxia and requires alternative therapeutic strategies. 12/15-Lipoxygenase (12/15 LOX), a key proinflammatory lipid peroxidative enzyme which site specifically inserts into cellular and subcellular membranes and plays an instrumental role in hypobaric hypoxia induced neuropathogenesis. Mitochondria, the master regulator organelles for oxygen consumption and ATP generation are sensitive to intracellular oxygen perturbations and are associated with activation of apoptosis based cell death cascades that seal the fate of the cell. The mechanistic involvement of 12/15 LOX in mitochondria mediated cell death in brain microenvironment during hypobaric hypoxia conditions can be an interesting preposition. In the present study, we have investigated underlying involvement of 12/15 LOX in hypobaric hypoxia (HH) induced disturbance in mitochondrial integrity and its relation with neuronal apoptosis. Male Balb/c mice subjected to simulated HH condition for three consecutive days showed robust increase in intra-hippocampal 12(S)HETE (12/15 LOX metabolite), which was significantly reduced following baicalein (12/15 LOX Inhibitor) treatment. The elevated level of 12(S)HETE following hypobaric hypoxia condition correlated with simultaneous increase in expression of 12/15 LOX in neurons and microglia lining the hippocampal CA3 region. Further, 12/15 LOX gets embedded onto the periphery of mitochondria following HH and a strong correlation has been observed with loss of mitochondrial integrity as evident from increased cytochrome-c in the cytosolic compartment and a subsequent upregulated activity of Caspase-3 and Caspase-9 as well as Bax/Bcl-2 expression ratio. The observed effects seen under HH were reversed upon treatment with baicalein suggesting a critical role of 12/15 LOX in HH induced mitochondrial damage Further, the hypobaric hypoxia-mediated increase in hippocampal pAKT and pmTOR protein expression were significantly ameliorated following 12/15 LOX inhibition, suggesting a mitochondrial involvement. We hereby demonstrate the contribution of 12/15 LOX in disorienting mitochondrial integrity with subsequent release of cytochrome-c in cytosol which drives the neuronal cells to intrinsic mode of cell death during hypobaric hypoxia. The protective role of baicalein by inhibition of 12/15 LOX dependent neuronal cell death and preservation of mitochondrial integrity suggests it to be a plausible therapeutic target in CNS related disorders.
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Affiliation(s)
- Richa Choudhary
- Dr. B.R Ambedkar Centre for Biomedical Research, University of Delhi, Delhi, India
| | - Mukesh Kumar
- Dr. B.R Ambedkar Centre for Biomedical Research, University of Delhi, Delhi, India
| | - Anju Katyal
- Dr. B.R Ambedkar Centre for Biomedical Research, University of Delhi, Delhi, India.
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Wang X, Cui L, Ji X. Cognitive impairment caused by hypoxia: from clinical evidences to molecular mechanisms. Metab Brain Dis 2022; 37:51-66. [PMID: 34618295 DOI: 10.1007/s11011-021-00796-3] [Citation(s) in RCA: 22] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/16/2021] [Accepted: 07/09/2021] [Indexed: 12/23/2022]
Abstract
Hypoxia is a state of reduced oxygen supply and excessive oxygen consumption. According to the duration of hypoxic period, it can be classified as acute and chronic hypoxia. Both acute and chronic hypoxia could induce abundant neurological deficits. Although there have been significant advances in the pathophysiological injuries, few studies have focused on the cognitive dysfunction. In this review, we focused on the clinical evidences and molecular mechanisms of cognitive impairment under acute and chronic hypoxia. Hypoxia can impair several cognitive domains such as attention, learning and memory, procession speed and executive function, which are similar in acute and chronic hypoxia. The severity of cognitive deficit correlates with the duration and degree of hypoxia. Recovery can be achieved after acute hypoxia, while sequelae or even dementia can be observed after chronic hypoxia, perhaps due to the different molecular mechanisms. Cardiopulmonary compensatory response, glycolysis, oxidative stress, calcium overload, adenosine, mitochondrial disruption, inflammation and excitotoxicity contribute to the molecular mechanisms of cognitive deficit after acute hypoxia. During the chronic stage of hypoxia, different adaptive responses, impaired neurovascular coupling, apoptosis, transcription factors-mediated inflammation, as well as Aβ accumulation and tau phosphorylation account for the neurocognitive deficit. Moreover, brain structural changes with hippocampus and cortex atrophy, ventricle enlargement, senile plaque and neurofibrillary tangle deposition can be observed under chronic hypoxia rather than acute hypoxia.
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Affiliation(s)
- Xiaoyin Wang
- Department of Neurology, Xuanwu Hospital of Capital Medical University, Beijing, China
- Beijing Institute for Brain Disorders, Capital Medical University, Beijing, China
| | - Lili Cui
- Department of Neurology, Xuanwu Hospital of Capital Medical University, Beijing, China
| | - Xunming Ji
- Beijing Institute for Brain Disorders, Capital Medical University, Beijing, China.
- Department of Neurosurgery, Xuanwu Hospital of Capital Medical University, No 45, Changchun Street, Beijing, 100053, Xicheng District, China.
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Bonilla-Jaime H, Zeleke H, Rojas A, Espinosa-Garcia C. Sleep Disruption Worsens Seizures: Neuroinflammation as a Potential Mechanistic Link. Int J Mol Sci 2021; 22:12531. [PMID: 34830412 PMCID: PMC8617844 DOI: 10.3390/ijms222212531] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2021] [Revised: 11/16/2021] [Accepted: 11/18/2021] [Indexed: 12/13/2022] Open
Abstract
Sleep disturbances, such as insomnia, obstructive sleep apnea, and daytime sleepiness, are common in people diagnosed with epilepsy. These disturbances can be attributed to nocturnal seizures, psychosocial factors, and/or the use of anti-epileptic drugs with sleep-modifying side effects. Epilepsy patients with poor sleep quality have intensified seizure frequency and disease progression compared to their well-rested counterparts. A better understanding of the complex relationship between sleep and epilepsy is needed, since approximately 20% of seizures and more than 90% of sudden unexpected deaths in epilepsy occur during sleep. Emerging studies suggest that neuroinflammation, (e.g., the CNS immune response characterized by the change in expression of inflammatory mediators and glial activation) may be a potential link between sleep deprivation and seizures. Here, we review the mechanisms by which sleep deprivation induces neuroinflammation and propose that neuroinflammation synergizes with seizure activity to worsen neurodegeneration in the epileptic brain. Additionally, we highlight the relevance of sleep interventions, often overlooked by physicians, to manage seizures, prevent epilepsy-related mortality, and improve quality of life.
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Affiliation(s)
- Herlinda Bonilla-Jaime
- Departamento de Biología de la Reproducción, Área de Biología Conductual y Reproductiva, Universidad Autónoma Metropolitana-Iztapalapa, Ciudad de Mexico CP 09340, Mexico;
| | - Helena Zeleke
- Neuroscience and Behavioral Biology Program, College of Arts and Sciences, Emory University, Atlanta, GA 30322, USA;
| | - Asheebo Rojas
- Department of Pharmacology and Chemical Biology, School of Medicine, Emory University, Atlanta, GA 30322, USA
| | - Claudia Espinosa-Garcia
- Department of Pharmacology and Chemical Biology, School of Medicine, Emory University, Atlanta, GA 30322, USA
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Zou B, Tian Y, Shi Z, Zhang R, Ma H. Protective effects of active compounds from on heart and brain of mice at simulated high altitude. Zhejiang Da Xue Xue Bao Yi Xue Ban 2021; 50:568-574. [PMID: 34986540 DOI: 10.3724/zdxbyxb-2021-0344] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
To investigate the active compounds from on the heart and brain of mice at simulated high altitude.Fifty healthy male adult BALB/c mice were randomly divided into normal control group, hypoxic model group, acetazolamide group, petroleum ether extract of (PESI) group and octacosan group with 10 mice in each group. Acetazolamide group, PESI group and octacosan group were treated with acetazolamide PESI (200 mg/kg) or octacosan by single tail vein injection, respectively. Except normal control group, the mice were exposed to a simulated high altitude of for in an animal decompression chamber. After the mice were sacrificed by cervical dislocation, the heart and brain were histologically observed by HE staining; superoxide dismutase (SOD) activity, total anti-oxidant capacity (T-AOC) and the content of malondialdehyde (MDA) in plasma, heart and brain tissues were detected by WST-1 method, ABTS method and TBA method, respectively; lactic acid and lactate dehydrogenase (LDH) activity in plasma, heart and brain tissues were detected by colorimetric method and microwell plate method, respectively; ATP content and ATPase activity in heart and brain tissues were detected by colorimetric method. PESI and octacosane significantly attenuated the pathological damages of heart and brain tissue at simulated high altitude; increased SOD activity, T-AOC and LDH activity, and decreased the contents of MDA and lactic acid in plasma, heart and brain tissues; increased the content of ATP in heart and brain tissues; increased the activities of Na-K ATPase, Mg ATPase, Ca ATPase and Ca-Mg ATPase in myocardial tissue; and increased the activities of Mg ATPase, Ca-Mg ATPase in brain tissue. PESI and octacosan exert anti-hypoxic activity by improving the antioxidant capacity, reducing the free radical levels, promoting the anaerobic fermentation, and alleviating the energy deficiency and metabolic disorders caused by hypoxia in mice.
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Affiliation(s)
- Beilei Zou
- 2. Key Laboratory of the Plateau Medicine, the 940th Hospital of Joint Logistics Support Force of Chinese People's Liberation Army, Lanzhou 730050, China
| | - Yiting Tian
- 2. Key Laboratory of the Plateau Medicine, the 940th Hospital of Joint Logistics Support Force of Chinese People's Liberation Army, Lanzhou 730050, China
| | - Zhiqun Shi
- 2. Key Laboratory of the Plateau Medicine, the 940th Hospital of Joint Logistics Support Force of Chinese People's Liberation Army, Lanzhou 730050, China
| | - Ruxue Zhang
- 2. Key Laboratory of the Plateau Medicine, the 940th Hospital of Joint Logistics Support Force of Chinese People's Liberation Army, Lanzhou 730050, China
| | - Huiping Ma
- 2. Key Laboratory of the Plateau Medicine, the 940th Hospital of Joint Logistics Support Force of Chinese People's Liberation Army, Lanzhou 730050, China
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Kushwah N, Jain V, Kadam M, Kumar R, Dheer A, Prasad D, Kumar B, Khan N. Ginkgo biloba L. Prevents Hypobaric Hypoxia-Induced Spatial Memory Deficit Through Small Conductance Calcium-Activated Potassium Channel Inhibition: The Role of ERK/CaMKII/CREB Signaling. Front Pharmacol 2021; 12:669701. [PMID: 34326768 PMCID: PMC8313424 DOI: 10.3389/fphar.2021.669701] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2021] [Accepted: 06/14/2021] [Indexed: 01/02/2023] Open
Abstract
Hypobaric hypoxia (HH) is a stressful condition, which is more common at high altitudes and can impair cognitive functions. Ginkgo biloba L. leaf extract (GBE) is widely used as herbal medicine against different disorders. Its ability to improve cognitive functions, reduce oxidative stress, and promote cell survival makes it a putative therapeutic candidate against HH. The present study has been designed to explore the effect of GBE on HH-induced neurodegeneration and memory impairment as well as possible signaling mechanisms involved. 220–250 gm (approximately 6- to 8-week-old) Sprague Dawley rats were randomly divided into different groups. GBE was orally administered to respective groups at a dose of 100 mg/kg/day throughout the HH exposure, i.e., 14 days. Memory testing was performed followed by hippocampus isolation for further processing of different molecular and morphological parameters related to cognition. The results indicated that GBE ameliorates HH-induced memory impairment and oxidative damage and reduces apoptosis. Moreover, GBE modulates the activity of the small conductance calcium-activated potassium channels, which further reduces glutamate excitotoxicity and apoptosis. The exploration of the downstream signaling pathway demonstrated that GBE administration prevents HH-induced small conductance calcium-activated potassium channel activation, and that initiates pro-survival machinery by activating extracellular signal–regulated kinase (ERK)/calmodulin-dependent protein kinase II (CaMKII) and the cAMP response element–binding protein (CREB) signaling pathway. In summary, the current study demonstrates the beneficial effect of GBE on conditions like HH and provides various therapeutic targets involved in the mechanism of action of GBE-mediated neuroprotection.
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Affiliation(s)
- Neetu Kushwah
- Department of Neurobiology, Defence Institute of Physiology and Allied Sciences (DIPAS), DRDO, Delhi, India
| | - Vishal Jain
- Department of Neurophysiology, Defence Institute of Physiology and Allied Sciences (DIPAS), DRDO, Delhi, India
| | - Manisha Kadam
- Department of Neurobiology, Defence Institute of Physiology and Allied Sciences (DIPAS), DRDO, Delhi, India
| | - Rahul Kumar
- Department of Neurobiology, Defence Institute of Physiology and Allied Sciences (DIPAS), DRDO, Delhi, India
| | - Aastha Dheer
- Department of Neurobiology, Defence Institute of Physiology and Allied Sciences (DIPAS), DRDO, Delhi, India
| | - Dipti Prasad
- Department of Neurobiology, Defence Institute of Physiology and Allied Sciences (DIPAS), DRDO, Delhi, India
| | - Bhuvnesh Kumar
- Department of Neurobiology, Defence Institute of Physiology and Allied Sciences (DIPAS), DRDO, Delhi, India.,Department of Neurophysiology, Defence Institute of Physiology and Allied Sciences (DIPAS), DRDO, Delhi, India
| | - Nilofar Khan
- Department of Neurobiology, Defence Institute of Physiology and Allied Sciences (DIPAS), DRDO, Delhi, India
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Coimbra-Costa D, Garzón F, Alva N, Pinto TCC, Aguado F, Torrella JR, Carbonell T, Rama R. Intermittent Hypobaric Hypoxic Preconditioning Provides Neuroprotection by Increasing Antioxidant Activity, Erythropoietin Expression and Preventing Apoptosis and Astrogliosis in the Brain of Adult Rats Exposed to Acute Severe Hypoxia. Int J Mol Sci 2021; 22:5272. [PMID: 34067817 PMCID: PMC8156215 DOI: 10.3390/ijms22105272] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2021] [Revised: 04/26/2021] [Accepted: 05/13/2021] [Indexed: 12/11/2022] Open
Abstract
BACKGROUND Exposure to intermittent hypoxia has been demonstrated to be an efficient tool for hypoxic preconditioning, preventing damage to cells and demonstrating therapeutic benefits. We aimed to evaluate the effects of respiratory intermittent hypobaric hypoxia (IHH) to avoid brain injury caused by exposure to acute severe hypoxia (ASH). METHODS biomarkers of oxidative damage, mitochondrial apoptosis, and transcriptional factors in response to hypoxia were assessed by Western blot and immunohistochemistry in brain tissue. Four groups of rats were used: (1) normoxic (NOR), (2) exposed to ASH (FiO2 7% for 6 h), (3) exposed to IHH for 3 h per day over 8 days at 460 mmHg, and (4) ASH preconditioned after IHH. RESULTS ASH animals underwent increased oxidative-stress-related parameters, an upregulation in apoptotic proteins and had astrocytes with phenotype forms compatible with severe diffuse reactive astrogliosis. These effects were attenuated and even prevented when the animals were preconditioned with IHH. These changes paralleled the inhibition of NF-κB expression and the increase of erythropoietin (EPO) levels in the brain. CONCLUSIONS IHH exerted neuroprotection against ASH-induced oxidative injury by preventing oxidative stress and inhibiting the apoptotic cascade, which was associated with NF-κB downregulation and EPO upregulation.
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Affiliation(s)
- Débora Coimbra-Costa
- Department of Cellular Biology, Physiology and Immunology, Faculty of Biology, Universitat de Barcelona, Av. Diagonal 643, 08028 Barcelona, Spain; (D.C.-C.); (F.G.); (N.A.); (F.A.); (T.C.); (R.R.)
| | - Fernando Garzón
- Department of Cellular Biology, Physiology and Immunology, Faculty of Biology, Universitat de Barcelona, Av. Diagonal 643, 08028 Barcelona, Spain; (D.C.-C.); (F.G.); (N.A.); (F.A.); (T.C.); (R.R.)
| | - Norma Alva
- Department of Cellular Biology, Physiology and Immunology, Faculty of Biology, Universitat de Barcelona, Av. Diagonal 643, 08028 Barcelona, Spain; (D.C.-C.); (F.G.); (N.A.); (F.A.); (T.C.); (R.R.)
| | - Tiago C. C. Pinto
- Department of Neurophychiatry and Behavioural Science, Universidade Federal de Pernambuco, Av. da Engenharia, 186-298, Cidade Universitaria, Recife 50740-600, PE, Brazil;
| | - Fernando Aguado
- Department of Cellular Biology, Physiology and Immunology, Faculty of Biology, Universitat de Barcelona, Av. Diagonal 643, 08028 Barcelona, Spain; (D.C.-C.); (F.G.); (N.A.); (F.A.); (T.C.); (R.R.)
| | - Joan Ramon Torrella
- Department of Cellular Biology, Physiology and Immunology, Faculty of Biology, Universitat de Barcelona, Av. Diagonal 643, 08028 Barcelona, Spain; (D.C.-C.); (F.G.); (N.A.); (F.A.); (T.C.); (R.R.)
| | - Teresa Carbonell
- Department of Cellular Biology, Physiology and Immunology, Faculty of Biology, Universitat de Barcelona, Av. Diagonal 643, 08028 Barcelona, Spain; (D.C.-C.); (F.G.); (N.A.); (F.A.); (T.C.); (R.R.)
| | - Ramón Rama
- Department of Cellular Biology, Physiology and Immunology, Faculty of Biology, Universitat de Barcelona, Av. Diagonal 643, 08028 Barcelona, Spain; (D.C.-C.); (F.G.); (N.A.); (F.A.); (T.C.); (R.R.)
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Kadam M, Perveen S, Kushwah N, Prasad D, Panjwani U, Kumar B, Khan N. Elucidating the role of hypoxia/reoxygenation in hippocampus-dependent memory impairment: do SK channels play role? Exp Brain Res 2021; 239:1747-1763. [PMID: 33779792 DOI: 10.1007/s00221-021-06095-8] [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: 09/30/2020] [Accepted: 03/19/2021] [Indexed: 10/21/2022]
Abstract
Professionals and mountaineers often face the problem of reperfusion injury due to re-oxygenation, upon their return to sea-level after sojourn at high altitude. Small conductance calcium-activated potassium channels (SK channels) have a role in regulating hippocampal synaptic plasticity. However, the role of SK channels under hypoxia-reoxygenation (H/R) is unknown. The present study hypothesized that SK channels play a significant role in H/R induced cognitive dysfunction. Sprague-Dawley rats were exposed to simulated HH (25,000 ft) continuously for 7 days followed by reoxygenation periods 3, 6, 24, 48, 72 and 120 h. It was observed that H/R exposure caused impairment in spatial memory as indicated by increased latency (p < 0.001) and pathlength (p < 0.001). The SK1 channel expression increased upon HH exposure (102.89 ± 7.055), which abrogated upon reoxygenation. HH exposure results in an increase in SK2 (CA3, 297.67 ± 6.69) and SK3 (CA1, 246 ± 5.13) channels which continued to increase gradually upon reoxygenation. The number of pyknotic cells (24 ± 2.03) (p < 0.01) and the expression of caspase-3 increased with HH exposure, which continued in the reoxygenation group (177.795 ± 1.264). Similar pattern was observed in lipid peroxidation (p < 0.001), LDH activity (p < 0.001) and ROS production (p < 0.001). A positive correlation of memory, cell death and oxidative stress indicates that H/R exposure increases oxidative stress coupled with SK channel expression, which may play a role in H/R-induced cognitive decline and neurodegeneration.
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Affiliation(s)
- Manisha Kadam
- Neurobiology Division, Defence Institute of Physiology and Allied Sciences (DIPAS), Defence Research and Developmental Organization (DRDO), Lucknow Road, Timarpur, Delhi, 110054, India
| | - Saba Perveen
- Neurobiology Division, Defence Institute of Physiology and Allied Sciences (DIPAS), Defence Research and Developmental Organization (DRDO), Lucknow Road, Timarpur, Delhi, 110054, India
| | - Neetu Kushwah
- Neurobiology Division, Defence Institute of Physiology and Allied Sciences (DIPAS), Defence Research and Developmental Organization (DRDO), Lucknow Road, Timarpur, Delhi, 110054, India
| | - Dipti Prasad
- Neurobiology Division, Defence Institute of Physiology and Allied Sciences (DIPAS), Defence Research and Developmental Organization (DRDO), Lucknow Road, Timarpur, Delhi, 110054, India
| | - Usha Panjwani
- Neurobiology Division, Defence Institute of Physiology and Allied Sciences (DIPAS), Defence Research and Developmental Organization (DRDO), Lucknow Road, Timarpur, Delhi, 110054, India
| | - Bhuvnesh Kumar
- Neurobiology Division, Defence Institute of Physiology and Allied Sciences (DIPAS), Defence Research and Developmental Organization (DRDO), Lucknow Road, Timarpur, Delhi, 110054, India
| | - Nilofar Khan
- Neurobiology Division, Defence Institute of Physiology and Allied Sciences (DIPAS), Defence Research and Developmental Organization (DRDO), Lucknow Road, Timarpur, Delhi, 110054, India.
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Ybañez‐Julca RO, Asunción‐Alvarez D, Palacios J, Nwokocha CR. Maca extracts and estrogen replacement therapy in ovariectomized rats exposed at high altitude. Reprod Med Biol 2021; 20:88-95. [PMID: 33488288 PMCID: PMC7812464 DOI: 10.1002/rmb2.12357] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2020] [Revised: 10/15/2020] [Accepted: 10/25/2020] [Indexed: 12/12/2022] Open
Abstract
PURPOSE Hormone Replacement Therapy (HRT) and herbal remedies are often used to alleviate menopausal symptoms, but their effects and efficacy at high altitudes presents with several uncertainties. The purpose of this study was to evaluate whether pre-treatment with maca (Lepidium meyenii Walp) improved the tolerance to high altitude on an ovariectomized (OVX) rat model at sea level. METHOD The animals were treated with 17β-estradiol (200 µg/kg; E2), red and black maca (1.5 g/kg) for 28 days and exposed at high altitude or sea level. RESULT Our findings showed that red and black maca extracts significantly (P < .001) reduced the MDA level in OVX rat serum under hypoxia in a similar way to E2. Red and black maca extracts had similar effects with E2, by significantly (P < .001) reversing and increasing the ovariectomized induced decrease in cornified endometrial cell number. Under hypoxic conditions, the black maca (P < .05) and E2 (P < .01) increased the uterine weight in OVX rats. Finally, E2 alone significantly recovered the frequency of the uterine contractile response. CONCLUSION Aqueous extract of L. meyenii partially protects the reproductive function in hypobaric hypoxic environment, through the recovery of the cornified endometrial cells and uterine weight in a menopausal model of OVX rats.
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Affiliation(s)
- Roberto O. Ybañez‐Julca
- Laboratorio de FarmacologíaFacultad de Farmacia y BioquímicaUniversidad Nacional de TrujilloTrujilloPerú
| | - Daniel Asunción‐Alvarez
- Laboratorio de FarmacologíaFacultad de Farmacia y BioquímicaUniversidad Nacional de TrujilloTrujilloPerú
| | - Javier Palacios
- Laboratorio de Bioquímica AplicadaFacultad de Ciencias de la SaludUniversidad Arturo PratIquiqueChile
| | - Chukwuemeka R. Nwokocha
- Department of Basic Medical SciencesFaculty of Medical SciencesThe University of the West IndiesKingstonJamaica
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Magnesium Sulfate Attenuates Lethality and Oxidative Damage Induced by Different Models of Hypoxia in Mice. BIOMED RESEARCH INTERNATIONAL 2020; 2020:2624734. [PMID: 33381544 PMCID: PMC7765718 DOI: 10.1155/2020/2624734] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/08/2020] [Accepted: 12/12/2020] [Indexed: 11/23/2022]
Abstract
Mg2+ is an important cation in our body. It is an essential cofactor for many enzymes. Despite many works, nothing is known about the protective effects of MgSO4 against hypoxia-induced lethality and oxidative damage in brain mitochondria. In this study, antihypoxic and antioxidative activities of MgSO4 were evaluated by three experimental models of induced hypoxia (asphyctic, haemic, and circulatory) in mice. Mitochondria protective effects of MgSO4 were evaluated in mouse brain after induction of different models of hypoxia. Antihypoxic activity was especially pronounced in asphyctic hypoxia, where MgSO4 at dose 600 mg/kg showed the same activity as phenytoin, which used as a positive control (P < 0.001). In the haemic model, MgSO4 at all used doses significantly prolonged latency of death. In circulatory hypoxia, MgSO4 (600 mg/kg) doubles the survival time. MgSO4 significantly decreased lipid peroxidation and protein carbonyl and improved mitochondrial function and glutathione content in brain mitochondria compared to the control groups. The results obtained in this study showed that MgSO4 administration has protective effects against lethality induced by different models of hypoxia and improves brain mitochondria oxidative damage.
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Wang Y, Duo D, Yan Y, He R, Wang S, Wang A, Wu X. Bioactive constituents of Salvia przewalskii and the molecular mechanism of its antihypoxia effects determined using quantitative proteomics. PHARMACEUTICAL BIOLOGY 2020; 58:469-477. [PMID: 32476549 PMCID: PMC7336993 DOI: 10.1080/13880209.2020.1762668] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/09/2019] [Revised: 03/27/2020] [Accepted: 04/26/2020] [Indexed: 06/11/2023]
Abstract
Context: Environmental hypobaric hypoxia induces several physiological or pathological responses in individuals in high-altitude regions. Salvia przewalskii Maxim (Labiatae) (SPM) is a traditional Chinese herbal medicine and has known antibacterial, antiviral, antioxidant, anti-thrombotic, and anti-depressant activities.Objective: This study examined the antihypoxia effects of SPM in vivo.Materials and methods: The dried and pulverised of SPM was extracted from root crude drug with 70% ethanol with ultrasound. Male Sprague-Dawley rats were divided into three groups (n = 10): normal group, hypoxia group (altitude of 4260 m), and hypoxia + SPM group (altitude of 4260 m, SPM of 1.0 g/kg/day). The experiment persisted for 4 weeks. The mean pulmonary arterial pressure (mPAP), hypoxia-inducible factor-1α (HIF-1α) mRNA, and lung pathology were analysed using pulmonary artery pressure recorder, quantitative polymerase chain reaction, and histopathological analysis. Moreover, the effects of SPM on lung proteomes during hypoxia were observed by a TMT-based proteomic approach.Results: Pre-treatment with SPM decreased mPAP (24.86%) and HIF-1α (31.24%), and attenuated the pathological changes in lung tissues. In addition, a total of 28 proteins were differentially expressed in lung of hypoxia + SPM group (fold change > ± 1.2 and p < 0.05). The differentially altered proteins were primarily associated with antioxidative stress, as evidenced by the downregulated expression of Adh7, Cyp2d1, Plod2, Selenow, ND3, and Fabp1, and fructose metabolism, as evidenced by the downregulated expression of Khk and Aldob.Discussion and conclusions: These results suggested that SPM is a promising drug for antihypoxia. The mechanism of action might be related to increasing antioxidant capacity and inhibiting fructose metabolism.
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Affiliation(s)
- Yafeng Wang
- People’s Hospital of Qinghai Province, Xining, China
| | - Delong Duo
- People’s Hospital of Qinghai Province, Xining, China
| | - Yingjun Yan
- People’s Hospital of Qinghai Province, Xining, China
| | - Rongyue He
- People’s Hospital of Qinghai Province, Xining, China
| | | | - Aixia Wang
- People’s Hospital of Qinghai Province, Xining, China
| | - Xinan Wu
- Department of Pharmacy, The First Hospital of Lanzhou University, Lanzhou, China
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Kim HB, Yoo JY, Yoo SY, Lee JH, Chang W, Kim HS, Baik TK, Woo RS. Neuregulin-1 inhibits CoCl 2-induced upregulation of excitatory amino acid carrier 1 expression and oxidative stress in SH-SY5Y cells and the hippocampus of mice. Mol Brain 2020; 13:153. [PMID: 33187547 PMCID: PMC7664014 DOI: 10.1186/s13041-020-00686-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2020] [Accepted: 10/09/2020] [Indexed: 11/10/2022] Open
Abstract
Excitatory amino acid carrier 1 (EAAC1) is an important subtype of excitatory amino acid transporters (EAATs) and is the route for neuronal cysteine uptake. CoCl2 is not only a hypoxia-mimetic reagent but also an oxidative stress inducer. Here, we found that CoCl2 induced significant EAAC1 overexpression in SH-SY5Y cells and the hippocampus of mice. Transient transfection of EAAC1 reduced CoCl2-induced cytotoxicity in SH-SY5Y cells. Based on this result, upregulation of EAAC1 expression by CoCl2 is thought to represent a compensatory response against oxidative stress in an acute hypoxic state. We further demonstrated that pretreatment with Neuregulin-1 (NRG1) rescued CoCl2-induced upregulation of EAAC1 and tau expression. NRG1 plays a protective role in the CoCl2-induced accumulation of reactive oxygen species (ROS) and reduction in antioxidative enzyme (SOD and GPx) activity. Moreover, NRG1 attenuated CoCl2-induced apoptosis and cell death. NRG1 inhibited the CoCl2-induced release of cleaved caspase-3 and reduction in Bcl-XL levels. Our novel finding suggests that NRG1 may play a protective role in hypoxia through the inhibition of oxidative stress and thereby maintain normal EAAC1 expression levels.
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Affiliation(s)
- Han-Byeol Kim
- Department of Anatomy and Neuroscience, College of Medicine, Eulji University, 143-5Jung-Gu, Yongdu-Dong, Daejeon, 301-746, Republic of Korea
| | - Ji-Young Yoo
- Department of Anatomy and Neuroscience, College of Medicine, Eulji University, 143-5Jung-Gu, Yongdu-Dong, Daejeon, 301-746, Republic of Korea
| | - Seung-Yeon Yoo
- Department of Anatomy and Neuroscience, College of Medicine, Eulji University, 143-5Jung-Gu, Yongdu-Dong, Daejeon, 301-746, Republic of Korea
| | - Jun-Ho Lee
- Department of Emergency Medical Technology, Daejeon University, Daejeon, 34520, Republic of Korea
| | - Wonseok Chang
- Department of Physiology, College of Medicine, Eulji University, Daejeon, 301-746, Republic of Korea
| | - Hye-Sun Kim
- Department of Pharmacology, College of Medicine, Seoul National University, Seoul, 110-799, Korea.,Seoul National University College of Medicine, Bundang Hospital, Sungnam, 13620, Republic of Korea
| | - Tai-Kyoung Baik
- Department of Anatomy and Neuroscience, College of Medicine, Eulji University, 143-5Jung-Gu, Yongdu-Dong, Daejeon, 301-746, Republic of Korea.
| | - Ran-Sook Woo
- Department of Anatomy and Neuroscience, College of Medicine, Eulji University, 143-5Jung-Gu, Yongdu-Dong, Daejeon, 301-746, Republic of Korea.
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Jing L, Wu N, He L, Shao J, Ma H. Establishment of an experimental rat model of high altitude cerebral edema by hypobaric hypoxia combined with temperature fluctuation. Brain Res Bull 2020; 165:253-262. [PMID: 33141074 DOI: 10.1016/j.brainresbull.2020.10.017] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2020] [Revised: 10/17/2020] [Accepted: 10/20/2020] [Indexed: 12/11/2022]
Abstract
High altitude cerebral edema (HACE) is a kind of life threat disease encountered at high altitude, but the precise pathogenesis of it is far more understood. Hypobaic hypoxia (HH) and cold are conditions characteristic of high altitude environment. HH is always considered as the central causative factor for the development of HACE, but the effect of cold stress on HACE has been rarely investigated. The purpose of this study was to investigate the potential role of cold stress in the development of HACE and establish a stable experimental animal model. Male SPF Wistar rats were randomly divided into five groups for this experiment, control group (altitude, 1400 m, temperature, 25 ℃), NC + 2 ℃ group (altitude, 1400 m, temperature, 2 ℃), HH group (altitude, 6000 m, temperature, 25 ℃), HH+2 ℃ group (altitude, 6000 m, temperature, 2 ℃) and HH + 12/2 ℃ (altitude, 6000 m, temperature, 12 ℃/2 ℃ light/dark cycle). After exposure for 72 h, the blood and brain tissues were collected. Brain water content (BWC) and Evans Blue dye extravasation were used to assess the brain edema and blood-brain barrier (BBB) permeability, respectively. The levels of pro-inflammatory cytokines in serum were assessed via enzyme-linked immunosorbent assay. Oxidative stress markers and ATPase activity were determined using commercial kits. Western blotting was used to detect the expression of related proteins. Compared to control, HH+2 ℃ could significantly increase the BWC and BBB permeability, and these changes were further exacerbated by HH + 12/2 ℃. Furthermore, HH+2 ℃ and HH + 12/2 ℃ markedly increased the levels of H2O2 and MDA, restrained SOD and GSH levels and decreased Na+/K+-ATPase activitie compared with the control group. In addition, HH+2 ℃ and HH + 12/2 ℃ enhanced the levels of pro-inflammatory cytokines IL-1β, TNF-α and IL-6 in serum and significantly increased the expression of VEGF in brain compared with the control group, but only HH + 12/2 ℃ could increase the expression of AQP4. However, compared with control group, no significant differences in these parameters were observed in HH and NC+2 ℃groups. These results demonstrated that HH or cold stress alone did not successfully induce brain damage, while HH+2 ℃ could induce the onset of HACE via provoking injury caused by HH. HH + 12/2 ℃ was more obvious and efficient. Collectively, we firstly suggest that cold stress may promote the formation of HACE by aggravating the brain injury induced by HH exposure and supply an effective and reliable experimental rat model of HACE via HH combined with temperature fluctuation.
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Affiliation(s)
- Linlin Jing
- Department of Pharmacy, The 940th Hospital of Joint Logistics Support Force, Lanzhou, Gansu, 730050, People's Republic of China
| | - Ningzi Wu
- Department of Pharmacy, The 940th Hospital of Joint Logistics Support Force, Lanzhou, Gansu, 730050, People's Republic of China
| | - Lei He
- Department of Pharmacy, The 940th Hospital of Joint Logistics Support Force, Lanzhou, Gansu, 730050, People's Republic of China
| | - Jin Shao
- Department of Pharmacy, The 940th Hospital of Joint Logistics Support Force, Lanzhou, Gansu, 730050, People's Republic of China
| | - Huiping Ma
- Department of Pharmacy, The 940th Hospital of Joint Logistics Support Force, Lanzhou, Gansu, 730050, People's Republic of China.
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Maiti P, Manna J, Burch ZN, Flaherty DB, Larkin JD, Dunbar GL. Ameliorative Properties of Boronic Compounds in In Vitro and In Vivo Models of Alzheimer's Disease. Int J Mol Sci 2020; 21:ijms21186664. [PMID: 32933008 PMCID: PMC7555802 DOI: 10.3390/ijms21186664] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2020] [Revised: 09/07/2020] [Accepted: 09/09/2020] [Indexed: 12/13/2022] Open
Abstract
Alzheimer's disease (AD) is characterized by amyloid (Aβ) aggregation, hyperphosphorylated tau, neuroinflammation, and severe memory deficits. Reports that certain boronic compounds can reduce amyloid accumulation and neuroinflammation prompted us to compare trans-2-phenyl-vinyl-boronic-acid-MIDA-ester (TPVA) and trans-beta-styryl-boronic-acid (TBSA) as treatments of deficits in in vitro and in vivo models of AD. We hypothesized that these compounds would reduce neuropathological deficits in cell-culture and animal models of AD. Using a dot-blot assay and cultured N2a cells, we observed that TBSA inhibited Aβ42 aggregation and increased cell survival more effectively than did TPVA. These TBSA-induced benefits were extended to C. elegans expressing Aβ42 and to the 5xFAD mouse model of AD. Oral administration of 0.5 mg/kg dose of TBSA or an equivalent amount of methylcellulose vehicle to groups of six- and 12-month-old 5xFAD or wild-type mice over a two-month period prevented recognition- and spatial-memory deficits in the novel-object recognition and Morris-water-maze memory tasks, respectively, and reduced the number of pyknotic and degenerated cells, Aβ plaques, and GFAP and Iba-1 immunoreactivity in the hippocampus and cortex of these mice. These findings indicate that TBSA exerts neuroprotective properties by decreasing amyloid plaque burden and neuroinflammation, thereby preventing neuronal death and preserving memory function in the 5xFAD mice.
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Affiliation(s)
- Panchanan Maiti
- Field Neurosciences Institute Laboratory for Restorative Neurology, Central Michigan University, Mt. Pleasant, MI 48859, USA
- Department of Psychology, Central Michigan University, Mt. Pleasant, MI 48859, USA
- Program in Neuroscience, Central Michigan University, Mt. Pleasant, MI 48859, USA
- Field Neurosciences Institute, Ascension St. Mary, Saginaw, MI 48604, USA;
- College of Health and Human Services, Saginaw Valley State University, Saginaw, MI 48604, USA
- Correspondence: (P.M.); (G.L.D.); Tel.: +1-989-497-3026 (P.M.); +1-989-497-3105 (G.L.D.)
| | - Jayeeta Manna
- Field Neurosciences Institute, Ascension St. Mary, Saginaw, MI 48604, USA;
| | - Zoe N. Burch
- Department of Biology, Eckerd College, St. Petersburg, FL 33711, USA; (Z.N.B.); (D.B.F.)
| | - Denise B. Flaherty
- Department of Biology, Eckerd College, St. Petersburg, FL 33711, USA; (Z.N.B.); (D.B.F.)
| | - Joseph D. Larkin
- Department of Chemistry, Eckerd College, St. Petersburg, FL 33711, USA;
| | - Gary L. Dunbar
- Field Neurosciences Institute Laboratory for Restorative Neurology, Central Michigan University, Mt. Pleasant, MI 48859, USA
- Department of Psychology, Central Michigan University, Mt. Pleasant, MI 48859, USA
- Program in Neuroscience, Central Michigan University, Mt. Pleasant, MI 48859, USA
- Field Neurosciences Institute, Ascension St. Mary, Saginaw, MI 48604, USA;
- Correspondence: (P.M.); (G.L.D.); Tel.: +1-989-497-3026 (P.M.); +1-989-497-3105 (G.L.D.)
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Dhar G, Bag J, Mishra M. Environmental cue affects the hearing-related behaviors of Drosophila melanogaster by targeting the redox pathways. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2020; 27:32899-32912. [PMID: 32524398 DOI: 10.1007/s11356-020-09141-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/22/2020] [Accepted: 04/30/2020] [Indexed: 06/11/2023]
Abstract
Environmental cues like noise, pressure, and circadian rhythm can affect the hearing ability of human beings. Nevertheless, the complex physiology of the human being does not allow us to understand how these factors can affect hearing and hearing-related behaviors. Conversely, these effects can be easily checked using the hearing organ of Drosophila melanogaster, the Johnston organ. In the current study, the Drosophila was exposed to challenging environments like noise, low pressure, and altered circadian rhythm. The hearing organ of larvae, as well as adults, was analyzed for hearing-related defects. In the third instar larva, the cell deaths were detected in the antenna imaginal disc, the precursor of Johnston's organ. Elevated levels of reactive oxygen species and antioxidant enzymes were also detected in the adult antennae of environmentally challenged flies. The ultrastructure of the antennae suggests the presence of abundant mitochondria in the scolopidia of control. Fewer amounts of mitochondria are found in the environmentally challenged adult antennae. In adults, various hearing-related behaviors were analyzed as a readout of functionality of the hearing organ. Analysis of climbing, aggressive, and courtship behaviors suggests abnormal behavior in environmentally challenged flies than the control. The current study suggests that the environmental cues can alter hearing-related behaviors in Drosophila. The methods used in this study can be used to monitor the environmental pollution or to study the effect of alteration of noise, pressure, and circadian rhythm on hearing-related behaviors taking Drosophila melanogaster as a model organism. Graphical abstract.
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Affiliation(s)
- Gyanaseni Dhar
- Department of Life Science, Neural Developmental Biology Lab, NIT Rourkela, Rourkela, Odisha, India
| | - Janmejaya Bag
- Department of Life Science, Neural Developmental Biology Lab, NIT Rourkela, Rourkela, Odisha, India
| | - Monalisa Mishra
- Department of Life Science, Neural Developmental Biology Lab, NIT Rourkela, Rourkela, Odisha, India.
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Tang Z, Yang F, Dong Y, Ma C, Sun S, Shan Y, Zhang Y, Liu H. Midazolam contributes to neuroprotection against hypoxia/reoxygenation-induced brain injury in neonatal rats via regulation of EAAT2. Brain Res Bull 2020; 161:136-146. [DOI: 10.1016/j.brainresbull.2020.04.016] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2020] [Revised: 03/18/2020] [Accepted: 04/20/2020] [Indexed: 01/22/2023]
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Fear memory is impaired in hypobaric hypoxia: Role of synaptic plasticity and neuro-modulators in limbic region. Life Sci 2020; 254:117555. [DOI: 10.1016/j.lfs.2020.117555] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2019] [Revised: 03/05/2020] [Accepted: 03/13/2020] [Indexed: 12/19/2022]
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38
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Nzou G, Wicks RT, VanOstrand NR, Mekky GA, Seale SA, El-Taibany A, Wicks EE, Nechtman CM, Marrotte EJ, Makani VS, Murphy SV, Seeds MC, Jackson JD, Atala AJ. Multicellular 3D Neurovascular Unit Model for Assessing Hypoxia and Neuroinflammation Induced Blood-Brain Barrier Dysfunction. Sci Rep 2020; 10:9766. [PMID: 32555384 PMCID: PMC7299970 DOI: 10.1038/s41598-020-66487-8] [Citation(s) in RCA: 37] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2019] [Accepted: 05/20/2020] [Indexed: 12/11/2022] Open
Abstract
The blood-brain barrier (BBB) is a dynamic component of the brain-vascular interface that maintains brain homeostasis and regulates solute permeability into brain tissue. The expression of tight junction proteins between adjacent endothelial cells and the presence of efflux proteins prevents entry of foreign substances into the brain parenchyma. BBB dysfunction, however, is evident in many neurological disorders including ischemic stroke, trauma, and chronic neurodegenerative diseases. Currently, major contributors to BBB dysfunction are not well understood. Here, we employed a multicellular 3D neurovascular unit organoid containing human brain microvascular endothelial cells, pericytes, astrocytes, microglia, oligodendrocytes and neurons to model the effects of hypoxia and neuroinflammation on BBB function. Organoids were cultured in hypoxic chamber with 0.1% O2 for 24 hours. Organoids cultured under this hypoxic condition showed increased permeability, pro-inflammatory cytokine production, and increased oxidative stress. The anti-inflammatory agents, secoisolariciresinol diglucoside and 2-arachidonoyl glycerol, demonstrated protection by reducing inflammatory cytokine levels in the organoids under hypoxic conditions. Through the assessment of a free radical scavenger and an anti-inflammatory endocannabinoid, we hereby report the utility of the model in drug development for drug candidates that may reduce the effects of ROS and inflammation under disease conditions. This 3D organoid model recapitulates characteristics of BBB dysfunction under hypoxic physiological conditions and when exposed to exogenous neuroinflammatory mediators and hence may have potential in disease modeling and therapeutic development.
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Affiliation(s)
- Goodwell Nzou
- Wake Forest Institute for Regenerative Medicine, Wake Forest School of Medicine, Winston-Salem, NC, 27101, USA.
| | - Robert T Wicks
- Department of Neurology and Neurological Surgery, Wake Forest Baptist Medical Center, Winston-Salem, NC, 27157, USA
| | - Nicole R VanOstrand
- Wake Forest Institute for Regenerative Medicine, Wake Forest School of Medicine, Winston-Salem, NC, 27101, USA
| | - Gehad A Mekky
- Wake Forest Institute for Regenerative Medicine, Wake Forest School of Medicine, Winston-Salem, NC, 27101, USA
- Zoology Department, Faculty of Science, Zagazig University, Zagazig, Egypt
| | - Stephanie A Seale
- Wake Forest Institute for Regenerative Medicine, Wake Forest School of Medicine, Winston-Salem, NC, 27101, USA
| | - Aya El-Taibany
- Wake Forest Institute for Regenerative Medicine, Wake Forest School of Medicine, Winston-Salem, NC, 27101, USA
| | - Elizabeth E Wicks
- Wake Forest Institute for Regenerative Medicine, Wake Forest School of Medicine, Winston-Salem, NC, 27101, USA
| | - Carl M Nechtman
- Department of Neurology and Neurological Surgery, Wake Forest Baptist Medical Center, Winston-Salem, NC, 27157, USA
| | - Eric J Marrotte
- Department of Neurology and Neurological Surgery, Wake Forest Baptist Medical Center, Winston-Salem, NC, 27157, USA
| | - Vishruti S Makani
- Wake Forest Institute for Regenerative Medicine, Wake Forest School of Medicine, Winston-Salem, NC, 27101, USA
| | - Sean V Murphy
- Wake Forest Institute for Regenerative Medicine, Wake Forest School of Medicine, Winston-Salem, NC, 27101, USA
| | - M C Seeds
- Wake Forest Institute for Regenerative Medicine, Wake Forest School of Medicine, Winston-Salem, NC, 27101, USA
| | - John D Jackson
- Wake Forest Institute for Regenerative Medicine, Wake Forest School of Medicine, Winston-Salem, NC, 27101, USA
| | - Anthony J Atala
- Wake Forest Institute for Regenerative Medicine, Wake Forest School of Medicine, Winston-Salem, NC, 27101, USA
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Cognitive Protective Mechanism of Crocin Pretreatment in Rat Submitted to Acute High-Altitude Hypoxia Exposure. BIOMED RESEARCH INTERNATIONAL 2020; 2020:3409679. [PMID: 32596298 PMCID: PMC7303745 DOI: 10.1155/2020/3409679] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/18/2020] [Revised: 05/08/2020] [Accepted: 05/25/2020] [Indexed: 12/19/2022]
Abstract
Inadequate oxygen availability at high altitude leads to oxidative stress, resulting in hippocampal neurodegeneration and memory impairment. In our previous study, we found that the cognitive dysfunction occurred when male SD rat was rapidly exposed to 4200 m of high altitude for 3 days. And we also found that crocin showed a cognitive protective effect under hypoxia by regulating SIRT1/PGC-1α pathways in rat's hippocampus. In this article, focused on factors related to SIRT1/PGC-1α pathways, we proposed to further elucidate crocin's pharmacological mechanism. Adult male Sprague-Dawley rats were randomly divided into five groups: control group, hypoxia group (rats were rapidly transported to high altitude of 4200 m for 72 h), and crocins+hypoxia groups (pretreatment with crocin of 25, 50, and 100 mg/kg/d for 3 days). The learning and memory ability was tested by Morris water maze analysis. Hippocampal histopathological changes were observed by HE staining and Nissl staining. The expression of NRF1, TFAM, Bcl-2, Bax, and caspase-3 was detected by immunohistochemistry, RT-PCR, and western blotting test. The contents of malondialdehyde (MDA), superoxide dismutase (SOD), glutathione (GSH), and glutathione peroxidase (GSHPx) were detected by the TBA, WST, and colorimetry method. Neuronal apoptosis was observed by TUNEL staining. After crocin pretreatment, the traveled distance was significantly reduced and the percentage of time in the target quadrant was significantly increased tested by Morris water maze. And neuronal damage in the hippocampus was also significantly ameliorated based on HE staining and Nissl staining. Furthermore, in hippocampus tissue, mitochondrial biosynthesis-related factors of NRF1, TFAM expression was increased; oxidative stress factors of SOD, GSH, and GSHPx expression level were increased, and MDA and glutathione disulfide (GSSG) level were decreased; antiapoptotic protein Bcl-2 expression was increased, and proapoptotic proteins Bax and caspase-3 expression were decreased, with a manner of crocin dose dependent. Therefore, the cognitive protective mechanism of crocin in rat under acute hypoxia was related to promoting mitochondrial biosynthesis, ameliorating oxidative stress injury, and decreasing neuronal apoptosis.
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Adav SS, Sze SK. Hypoxia-Induced Degenerative Protein Modifications Associated with Aging and Age-Associated Disorders. Aging Dis 2020; 11:341-364. [PMID: 32257546 PMCID: PMC7069466 DOI: 10.14336/ad.2019.0604] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2019] [Accepted: 06/04/2019] [Indexed: 12/18/2022] Open
Abstract
Aging is an inevitable time-dependent decline of various physiological functions that finally leads to death. Progressive protein damage and aggregation have been proposed as the root cause of imbalance in regulatory processes and risk factors for aging and neurodegenerative diseases. Oxygen is a modulator of aging. The oxygen-deprived conditions (hypoxia) leads to oxidative stress, cellular damage and protein modifications. Despite unambiguous evidence of the critical role of spontaneous non-enzymatic Degenerative Protein Modifications (DPMs) such as oxidation, glycation, carbonylation, carbamylation, and deamidation, that impart deleterious structural and functional protein alterations during aging and age-associated disorders, the mechanism that mediates these modifications is poorly understood. This review summarizes up-to-date information and recent developments that correlate DPMs, aging, hypoxia, and age-associated neurodegenerative diseases. Despite numerous advances in the study of the molecular hallmark of aging, hypoxia, and degenerative protein modifications during aging and age-associated pathologies, a major challenge remains there to dissect the relative contribution of different DPMs in aging (either natural or hypoxia-induced) and age-associated neurodegeneration.
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Affiliation(s)
- Sunil S Adav
- School of Biological Sciences, Nanyang Technological University, Singapore
- Singapore Phenome Centre, Lee Kong Chian School of Medicine, Nanyang Technological University, Singapore
| | - Siu Kwan Sze
- School of Biological Sciences, Nanyang Technological University, Singapore
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Kumari P, Wadhwa M, Chauhan G, Alam S, Roy K, Kumar Jha P, Kishore K, Ray K, Kumar S, Nag TC, Panjwani U. Hypobaric hypoxia induced fear and extinction memory impairment and effect of Ginkgo biloba in its amelioration: Behavioral, neurochemical and molecular correlates. Behav Brain Res 2020; 387:112595. [PMID: 32194184 DOI: 10.1016/j.bbr.2020.112595] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2019] [Revised: 02/12/2020] [Accepted: 03/06/2020] [Indexed: 12/21/2022]
Abstract
Regulated fear and extinction memory is essential for balanced behavioral response. Limbic brain regions are susceptible to hypobaric hypoxia (HH) and are putative target for fear extinction deficit and dysregulation. The present study aimed to examine the effect of HH and Ginkgo biloba extract (GBE) on fear and extinction memory with the underlying mechanism. Adult male Sprague-Dawley rats were evaluated for fear extinction and anxious behavior following GBE administration during HH exposure. Blood and tissue (PFC, hippocampus and amygdala) samples were collected for biochemical, morphological and molecular studies. Results revealed deficit in contextual and cued fear extinction following 3 days of HH exposure. Increased corticosterone, glutamate with decreased GABA level was found with marked pyknosis, decrease in apical dendritic length and number of functional spines. Decline in mRNA expression level of synaptic plasticity genes and immunoreactivity of BDNF, synaptophysin, PSD95, spinophilin was observed following HH exposure. GBE administration during HH exposure improved fear and extinction memory along with decline in anxious behavior. It restored corticosterone, glutamate and GABA levels with an increase in apical dendritic length and number of functional spines with a reduction in pyknosis. It also improved mRNA expression level and immunoreactivity of neurotrophic and synaptic proteins. The present study is the first which demonstrates fear extinction deficit and anxious behavior following HH exposure. GBE administration ameliorated fear and extinction memory dysregulation by restoration of neurotransmitter levels, neuronal pyknosis and synaptic connections along with improved neurotrophic and synaptic protein expressions.
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Affiliation(s)
- Punita Kumari
- Defence Institute of Physiology & Allied Sciences (DIPAS), Defence Research and Development Organization (DRDO), Lucknow Road, Timarpur, Delhi, 110054, India.
| | - Meetu Wadhwa
- Defence Institute of Physiology & Allied Sciences (DIPAS), Defence Research and Development Organization (DRDO), Lucknow Road, Timarpur, Delhi, 110054, India.
| | - Garima Chauhan
- Defence Institute of Physiology & Allied Sciences (DIPAS), Defence Research and Development Organization (DRDO), Lucknow Road, Timarpur, Delhi, 110054, India.
| | - Shahnawaz Alam
- Defence Institute of Physiology & Allied Sciences (DIPAS), Defence Research and Development Organization (DRDO), Lucknow Road, Timarpur, Delhi, 110054, India.
| | - Koustav Roy
- Defence Institute of Physiology & Allied Sciences (DIPAS), Defence Research and Development Organization (DRDO), Lucknow Road, Timarpur, Delhi, 110054, India.
| | - Prabhash Kumar Jha
- Defence Institute of Physiology & Allied Sciences (DIPAS), Defence Research and Development Organization (DRDO), Lucknow Road, Timarpur, Delhi, 110054, India.
| | - Krishna Kishore
- Defence Institute of Physiology & Allied Sciences (DIPAS), Defence Research and Development Organization (DRDO), Lucknow Road, Timarpur, Delhi, 110054, India.
| | - Koushik Ray
- Defence Institute of Physiology & Allied Sciences (DIPAS), Defence Research and Development Organization (DRDO), Lucknow Road, Timarpur, Delhi, 110054, India.
| | - Sanjeev Kumar
- Defence Institute of Physiology & Allied Sciences (DIPAS), Defence Research and Development Organization (DRDO), Lucknow Road, Timarpur, Delhi, 110054, India.
| | - Tapas Chandra Nag
- Department of Anatomy, All India Institute of Medical Sciences (AIIMS), New Delhi, India.
| | - Usha Panjwani
- Defence Institute of Physiology & Allied Sciences (DIPAS), Defence Research and Development Organization (DRDO), Lucknow Road, Timarpur, Delhi, 110054, India.
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Cysteine becomes conditionally essential during hypobaric hypoxia and regulates adaptive neuro-physiological responses through CBS/H 2S pathway. Biochim Biophys Acta Mol Basis Dis 2020; 1866:165769. [PMID: 32184133 DOI: 10.1016/j.bbadis.2020.165769] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2019] [Revised: 02/02/2020] [Accepted: 03/12/2020] [Indexed: 12/17/2022]
Abstract
Brain is well known for its disproportionate oxygen consumption and high energy-budget for optimal functioning. The decrease in oxygen supply to brain, thus, necessitates rapid activation of adaptive pathways - the absence of which manifest into vivid pathological conditions. Amongst these, oxygen sensing in glio-vascular milieu and H2S-dependent compensatory increase in cerebral blood flow (CBF) is a major adaptive response. We had recently demonstrated that the levels of H2S were significantly decreased during chronic hypobaric hypoxia (HH)-induced neuro-pathological effects. The mechanistic basis of this phenomenon, however, remained to be deciphered. We, here, describe experimental evidence for marked limitation of cysteine during HH - both in animal model as well as human volunteers ascending to high altitude. We show that the preservation of brain cysteine level, employing cysteine pro-drug (N-acetyl-L-cysteine, NAC), markedly curtailed effects of HH - not only on endogenous H2S levels but also, impairment of spatial reference memory in our animal model. We, further, present multiple lines of experimental evidence that the limitation of cysteine was causally governed by physiological propensity of brain to utilize cysteine, in cystathionine beta synthase (CBS)-dependent manner, past its endogenous replenishment potential. Notably, decrease in the levels of brain cysteine manifested despite positive effect (up-regulation) of HH on endogenous cysteine maintenance pathways and thus, qualifying cysteine as a conditionally essential nutrient (CEN) during HH. In brief, our data supports an adaptive, physiological role of CBS-mediated cysteine-utilization pathway - activated to increase endogenous levels of H2S - for optimal responses of brain to hypobaric hypoxia.
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Vetrovoy O, Sarieva K, Lomert E, Nimiritsky P, Eschenko N, Galkina O, Lyanguzov A, Tyulkova E, Rybnikova E. Pharmacological HIF1 Inhibition Eliminates Downregulation of the Pentose Phosphate Pathway and Prevents Neuronal Apoptosis in Rat Hippocampus Caused by Severe Hypoxia. J Mol Neurosci 2019; 70:635-646. [PMID: 31865524 DOI: 10.1007/s12031-019-01469-8] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2019] [Accepted: 12/12/2019] [Indexed: 01/24/2023]
Abstract
The pentose phosphate pathway (PPP) of glucose metabolism in the brain serves as a primary source of NADPH which in turn plays a crucial role in multiple cellular processes, including maintenance of redox homeostasis and antioxidant defense. In our model of protective mild hypobaric hypoxia in rats (3MHH), an inverse correlation between hypoxia-inducible factor-1 (HIF1) activity and mRNA levels of glucose-6-phosphate dehydrogenase (G6PD), the key enzyme of PPP, was observed. In the present study, it was demonstrated that severe hypobaric hypoxia (SH) induced short-term upregulation of HIF1 alpha-subunit (HIF1α) in the hippocampal CA1 subfield and decreased the activity of G6PD. The levels of NADPH were also reduced, promoting oxidative stress, triggering apoptosis, and neuronal loss. Injection of a HIF1 inhibitor (HIF1i), topotecan hydrochloride (5 mg/kg, i.p.), before SH prevented the upregulation of HIF1α and normalized G6PD activity. In addition, HIF1i injection caused an increase in NADPH levels, normalization of total glutathione levels and of the cellular redox status as well as suppression of free-radical and apoptotic processes. These results demonstrate a new molecular mechanism of post-hypoxic cerebral pathology development which involves HIF1-dependent PPP depletion and support a recently suggested injurious role of HIF1 activation in the acute phase of cerebral hypoxia/ischemia. Application of PPP stimulators in early post-hypoxic/ischemic period might represent a promising neuroprotective strategy. Graphical abstract HIF1-dependent down-regulation of the pentose phosphate pathway contributes to the hypoxia-induced oxidative stress and neuronal apoptosis in the rat hippocampus.
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Affiliation(s)
- Oleg Vetrovoy
- Laboratory of Regulation of Brain Neuron Functions, Pavlov Institute of Physiology, Russian Academy of Sciences, Makarova emb. 6, 199034, Saint Petersburg, Russia. .,Department of Biochemistry, Faculty of Biology, Saint Petersburg State University, Universitetskaya emb. 7-9, 199034, Saint Petersburg, Russia.
| | - Kseniia Sarieva
- Laboratory of Regulation of Brain Neuron Functions, Pavlov Institute of Physiology, Russian Academy of Sciences, Makarova emb. 6, 199034, Saint Petersburg, Russia
| | - Ekaterina Lomert
- Laboratory of Cell Biology in Culture, Institute of Cytology, Russian Academy of Sciences, Tihoretsky pr. 4, 194064, Saint Petersburg, Russia
| | - Peter Nimiritsky
- Institute for Regenerative Medicine, Medical Research and Education Center, Lomonosov Moscow State University, Lomonosov Ave. 27-10, 119192, Moscow, Russia.,Faculty of Medicine, Lomonosov Moscow State University, Lomonosov Ave. 31-5, 119192, Moscow, Russia
| | - Natalia Eschenko
- Department of Biochemistry, Faculty of Biology, Saint Petersburg State University, Universitetskaya emb. 7-9, 199034, Saint Petersburg, Russia
| | - Olga Galkina
- Department of Biochemistry, Faculty of Biology, Saint Petersburg State University, Universitetskaya emb. 7-9, 199034, Saint Petersburg, Russia
| | - Andrey Lyanguzov
- Department of Biochemistry, Faculty of Biology, Saint Petersburg State University, Universitetskaya emb. 7-9, 199034, Saint Petersburg, Russia
| | - Ekaterina Tyulkova
- Laboratory of Regulation of Brain Neuron Functions, Pavlov Institute of Physiology, Russian Academy of Sciences, Makarova emb. 6, 199034, Saint Petersburg, Russia
| | - Elena Rybnikova
- Laboratory of Regulation of Brain Neuron Functions, Pavlov Institute of Physiology, Russian Academy of Sciences, Makarova emb. 6, 199034, Saint Petersburg, Russia
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Ando S, Komiyama T, Sudo M, Higaki Y, Ishida K, Costello JT, Katayama K. The interactive effects of acute exercise and hypoxia on cognitive performance: A narrative review. Scand J Med Sci Sports 2019; 30:384-398. [PMID: 31605635 DOI: 10.1111/sms.13573] [Citation(s) in RCA: 42] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2019] [Revised: 09/09/2019] [Accepted: 10/04/2019] [Indexed: 12/13/2022]
Abstract
Acute moderate intensity exercise has been shown to improve cognitive performance. In contrast, hypoxia is believed to impair cognitive performance. The detrimental effects of hypoxia on cognitive performance are primarily dependent on the severity and duration of exposure. In this review, we describe how acute exercise under hypoxia alters cognitive performance, and propose that the combined effects of acute exercise and hypoxia on cognitive performance are mainly determined by interaction among exercise intensity and duration, the severity of hypoxia, and duration of exposure to hypoxia. We discuss the physiological mechanism(s) of the interaction and suggest that alterations in neurotransmitter function, cerebral blood flow, and possibly cerebral metabolism are the primary candidates that determine cognitive performance when acute exercise is combined with hypoxia. Furthermore, acclimatization appears to counteract impaired cognitive performance during prolonged exposure to hypoxia although the precise physiological mechanism(s) responsible for this amelioration remain to be elucidated. This review has implications for sporting, occupational, and recreational activities at terrestrial high altitude where cognitive performance is essential. Further studies are required to understand physiological mechanisms that determine cognitive performance when acute exercise is performed in hypoxia.
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Affiliation(s)
- Soichi Ando
- Graduate School of Informatics and Engineering, The University of Electro-Communications, Tokyo, Japan
| | - Takaaki Komiyama
- Center for Education in Liberal Arts and Sciences, Osaka University, Osaka, Japan
| | - Mizuki Sudo
- Meiji Yasuda Life Foundation of Health and Welfare, Tokyo, Japan
| | - Yasuki Higaki
- Faculty of Sports Science, Fukuoka University, Fukuoka, Japan
| | - Koji Ishida
- Research Center of Health, Physical Fitness and Sports, Nagoya University, Nagoya, Japan
| | - Joseph T Costello
- Extreme Environments Laboratory, Department of Sport and Exercise Science, University of Portsmouth, Portsmouth, UK
| | - Keisho Katayama
- Research Center of Health, Physical Fitness and Sports, Nagoya University, Nagoya, Japan
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Dhar P, Das SK, Barhwal K, Hota SK, Mishra KP, Singh SB. Trans-Himalayan Phytococktail Confers Protection Against Hypobaric Hypoxia-Induced Hippocampal Neurodegeneration and Memory Impairment in Male Sprague Dawley Rats. High Alt Med Biol 2019; 20:279-292. [PMID: 31550185 DOI: 10.1089/ham.2019.0011] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
Background: Exposure to hypobaric hypoxia (HH) has been reported to cause neurodegeneration and memory impairment. Hippophae rhamnoides, Prunus armeniaca, and Rhodiola imbricata, the indigenous plants of Indian Trans-Himalaya are widely used in traditional Tibetan and Amchi system of medicine. These are rich sources of diverse bioactive metabolites having prophylactic and therapeutic uses against a wide array of neurodegenerative diseases. The objective of this study was to elucidate the prophylactic and neuroprotective efficacy of formulated phytococktail (PC) against simulated HH-induced neurodegeneration in male Sprague Dawley (SD) rats. Materials and Methods: A PC containing H. rhamnoides fruit pulp, P. armeniaca fruit pulp, and R. imbricata dry root extract (100:50:1) was formulated. The neuroprotective efficacy of PC was evaluated in male SD rats following exposure to 7 day HH at simulated altitude (25,000 ft, 282 mm Hg). Rats were divided into four groups viz., normoxia group (NOR), normoxic group treated with PC (NORPC), 7 day hypoxic group treated with vehicle (7DH), and 7 day hypoxic group treated with PC (7DHPC). Memory impairment and neuromorphological alterations were measured. Targeted protein expression was analyzed by immunoblotting study. Results: PC supplementation significantly reduced the oxidative stress markers during exposure to HH. Spatial memory impairment by HH was significantly ameliorated by PC. HH-induced augmented pyknosis, decreased dendritic arborization, and increased Hoechst-positive neurons in hippocampal CA3 region were significantly ameliorated by PC. Immunoblotting study showed upregulation of BDNF and TrkB expression by PC. PC also prevented the hippocampal neurodegeneration by activating the PI3K/AKT signaling pathway, which leads to GSK-3β inactivation by its phosphorylation and alleviation of hippocampal Caspase3 expression leading to inhibition of apoptotic neuronal cell death. Conclusion: The present study advocates the potential role of PC as an effective neuroprotective supplement in preventing HH-induced neurodegeneration. Activation of the PI3K/Akt pathway through BDNF/TrkB interaction following PC supplementation after exposure to HH inhibits hippocampal neuronal apoptosis and memory impairment.
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Affiliation(s)
- Priyanka Dhar
- Defense Institute of High Altitude Research, Defense Research and Development Organization, Leh-Ladakh, India.,Department of Biotechnology, Techno India University, Salt Lake City, India
| | - Saroj Kumar Das
- Defense Institute of High Altitude Research, Defense Research and Development Organization, Leh-Ladakh, India.,Center for Biotechnology, Siksha 'O' Anusandhan (Deemed to be University), Bhubaneswar, India
| | - Kalpana Barhwal
- Defense Institute of High Altitude Research, Defense Research and Development Organization, Leh-Ladakh, India.,All India Institute of Medical Sciences, Bhubaneswar, India
| | - Sunil Kumar Hota
- Defense Institute of High Altitude Research, Defense Research and Development Organization, Leh-Ladakh, India
| | - Kamla Prasad Mishra
- Defense Institute of Physiology and Allied Sciences, Defense Research and Development Organization, Timarpur, India
| | - Shashi Bala Singh
- Defense Institute of Physiology and Allied Sciences, Defense Research and Development Organization, Timarpur, India.,National Institute of Pharmaceutical Education and Research, Balanagar, India
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Hwang J, DeLisi LE, Öngür D, Riley C, Zuo C, Shi X, Sung YH, Kondo D, Kim TS, Villafuerte R, Smedberg D, Yurgelun-Todd D, Renshaw PF. Cerebral bioenergetic differences measured by phosphorus-31 magnetic resonance spectroscopy between bipolar disorder and healthy subjects living in two different regions suggesting possible effects of altitude. Psychiatry Clin Neurosci 2019; 73:581-589. [PMID: 31125152 PMCID: PMC6771782 DOI: 10.1111/pcn.12893] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/29/2018] [Revised: 05/17/2019] [Accepted: 05/22/2019] [Indexed: 12/26/2022]
Abstract
AIM Increased oxidative stress in cerebral mitochondria may follow exposure to the systemic hypobaric hypoxia associated with residing at higher altitudes. Because mitochondrial dysfunction is implicated in bipolar disorder (BD) pathophysiology, this may impact the cerebral bioenergetics in BD. In this study, we evaluated the cerebral bioenergetics of BD and healthy control (HC) subjects at two sites, located at sea level and at moderate altitude. METHODS Forty-three veterans with BD and 33 HC veterans were recruited in Boston (n = 22) and Salt Lake City (SLC; n = 54). Levels of phosphocreatine, β nucleoside triphosphate (βNTP), inorganic phosphate, and pH over total phosphate (TP) were measured using phosphorus-31 magnetic resonance spectroscopy in the following brain regions: anterior cingulate cortex and posterior occipital cortex, as well as bilateral prefrontal and occipitoparietal (OP) white matter (WM). RESULTS A significant main effect of site was found in βNTP/TP (Boston > SLC) and phosphocreatine/TP (Boston < SLC) in most cortical and WM regions, and inorganic phosphate/TP (Boston < SLC) in OP regions. A main effect analysis of BD diagnosis demonstrated a lower pH in posterior occipital cortex and right OP WM and a lower βNTP/TP in right prefrontal WM in BD subjects, compared to HC subjects. CONCLUSION The study showed that there were cerebral bioenergetic differences in both BD and HC veteran participants at two different sites, which may be partly explained by altitude difference. Future studies are needed to replicate these results in order to elucidate the dysfunctional mitochondrial changes that occur in response to hypobaric hypoxia.
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Affiliation(s)
- Jaeuk Hwang
- Department of Psychiatry, University of Utah, Salt Lake City, USA.,Department of Psychiatry, Soonchunhyang University Hospital, Seoul, South Korea
| | - Lynn E DeLisi
- US Department of Veterans Affairs Boston Healthcare System, Brockton, USA
| | - Dost Öngür
- Brain Imaging Center, McLean Hospital, Department of Psychiatry, Harvard Medical School, Belmont, USA
| | - Colin Riley
- Department of Psychiatry, University of Utah, Salt Lake City, USA
| | - Chun Zuo
- Brain Imaging Center, McLean Hospital, Department of Psychiatry, Harvard Medical School, Belmont, USA
| | - Xianfeng Shi
- Department of Psychiatry, University of Utah, Salt Lake City, USA
| | - Young-Hoon Sung
- Department of Psychiatry, University of Utah, Salt Lake City, USA
| | - Douglas Kondo
- Department of Psychiatry, University of Utah, Salt Lake City, USA.,Rocky Mountain Mental Illness Research, Education and Clinical Center, US Department of Veterans Affairs Healthcare System, Salt Lake City, USA
| | - Tae-Suk Kim
- Department of Psychiatry, Seoul St. Mary's Hospital, The Catholic University of Korea College of Medicine, Seoul, South Korea
| | - Rosemond Villafuerte
- Brain Imaging Center, McLean Hospital, Department of Psychiatry, Harvard Medical School, Belmont, USA
| | - Diane Smedberg
- US Department of Veterans Affairs Boston Healthcare System, Brockton, USA
| | - Deborah Yurgelun-Todd
- Department of Psychiatry, University of Utah, Salt Lake City, USA.,Rocky Mountain Mental Illness Research, Education and Clinical Center, US Department of Veterans Affairs Healthcare System, Salt Lake City, USA
| | - Perry F Renshaw
- Department of Psychiatry, University of Utah, Salt Lake City, USA.,Rocky Mountain Mental Illness Research, Education and Clinical Center, US Department of Veterans Affairs Healthcare System, Salt Lake City, USA
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Li M, Zhu Y, Li J, Chen L, Tao W, Li X, Qiu Y. Effect and mechanism of verbascoside on hypoxic memory injury in plateau. Phytother Res 2019; 33:2692-2701. [PMID: 31364205 DOI: 10.1002/ptr.6443] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2018] [Revised: 04/23/2019] [Accepted: 06/27/2019] [Indexed: 01/30/2023]
Affiliation(s)
- Maoxing Li
- Department of PharmacyThe 940th Hospital of Joint Logistic Support Force, PLA Lanzhou China
- Key Laboratory of the Prevention and Treatment for Injure in Plateau of PLA Lanzhou China
- Department of PharmacyLanzhou University Lanzhou China
- School of PharmacyGansu University of Chinese Medicine Lanzhou China
| | - Yuting Zhu
- Department of PharmacyThe 940th Hospital of Joint Logistic Support Force, PLA Lanzhou China
- Key Laboratory of the Prevention and Treatment for Injure in Plateau of PLA Lanzhou China
- Department of PharmacyLanzhou University Lanzhou China
| | - Jing Li
- Department of PharmacyThe 940th Hospital of Joint Logistic Support Force, PLA Lanzhou China
- Key Laboratory of the Prevention and Treatment for Injure in Plateau of PLA Lanzhou China
| | - Liping Chen
- Department of PharmacyThe 940th Hospital of Joint Logistic Support Force, PLA Lanzhou China
- Key Laboratory of the Prevention and Treatment for Injure in Plateau of PLA Lanzhou China
| | - Wendi Tao
- Department of PharmacyThe 940th Hospital of Joint Logistic Support Force, PLA Lanzhou China
- Key Laboratory of the Prevention and Treatment for Injure in Plateau of PLA Lanzhou China
- Department of PharmacyLanzhou University Lanzhou China
| | - Xiaoling Li
- Department of PharmacyThe 940th Hospital of Joint Logistic Support Force, PLA Lanzhou China
- Key Laboratory of the Prevention and Treatment for Injure in Plateau of PLA Lanzhou China
- School of PharmacyGansu University of Chinese Medicine Lanzhou China
| | - Yan Qiu
- Department of PharmacyPudong Hospital of Shanghai University of Medicine and Health Science Shanghai China
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Ray K, Kishore K, Vats P, Bhattacharyya D, Akunov A, Maripov A, Sarybaev A, Singh SB, Kumar B. A Temporal Study on Learning and Memory at High Altitude in Two Ethnic Groups. High Alt Med Biol 2019; 20:236-244. [PMID: 31210541 DOI: 10.1089/ham.2018.0139] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Introduction: Cognitive function has been compromised during high-altitude (HA) exposure due to slowing of mental processing. Materials and Methods: A total of 20 Indian and 20 Kyrgyz soldiers were studied at 4111 m to assess cognitive function in two different ethnic groups. Paired associate learning, pattern recognition memory, spatial span (SSP), spatial working memory (SWM), choice reaction time (CRT), and simple reaction time (SRT) were evaluated at sea level and on days 3, 7, 14, and 21 of HA stay and on day 3 of deinduction. Results: All the parameters were significantly affected at HA. Indian soldiers were acclimatized by 7 days but Kyrgyz soldiers required 21 days for acclimatization. A slow impairment in SWM, CRT, and SRT was observed in Kyrgyz soldiers than in Indian soldiers and it continues throughout 21 days of HA stay, but for Indian soldiers the deterioration was maximum on day 7 and improvement in SWM, CRT, and SRT was observed on day 14 and close to baseline value on day 21. After deinduction, although Indian soldiers attained the normal value, Kyrgyz soldiers had higher value than baseline in SSP, SWM, CRT, and SRT. Conclusion: Difference in the cognitive performances of Indian and Kyrgyz soldiers may be due to the ethnogenetic diversity of these two groups.
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Affiliation(s)
- Koushik Ray
- Defence Institute of Physiology and Allied Sciences, Defence Research and Development Organization, Delhi, India
| | - Krishna Kishore
- Defence Institute of Physiology and Allied Sciences, Defence Research and Development Organization, Delhi, India
| | - Praveen Vats
- Defence Institute of Physiology and Allied Sciences, Defence Research and Development Organization, Delhi, India
| | - Debojyoti Bhattacharyya
- Defence Institute of Physiology and Allied Sciences, Defence Research and Development Organization, Delhi, India
| | - Almaz Akunov
- Kyrgyz-Indian Mountain Biomedical Research Centre, Bishkek, Kyrgyzstan
| | | | - Akpay Sarybaev
- Kyrgyz-Indian Mountain Biomedical Research Centre, Bishkek, Kyrgyzstan
| | - Shashi Bala Singh
- Defence Institute of Physiology and Allied Sciences, Defence Research and Development Organization, Delhi, India
| | - Bhuvnesh Kumar
- Defence Institute of Physiology and Allied Sciences, Defence Research and Development Organization, Delhi, India
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Jing L, Shao J, Sun W, Lan T, Jia Z, Ma H, Wang H. Protective effects of two novel nitronyl nitroxide radicals on heart failure induced by hypobaric hypoxia. Life Sci 2019; 248:116481. [PMID: 31102744 DOI: 10.1016/j.lfs.2019.05.037] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2019] [Revised: 05/08/2019] [Accepted: 05/13/2019] [Indexed: 12/01/2022]
Abstract
AIMS Hypobaric hypoxia (HH), linked to oxidative stress, impairs cardiac function. We synthesized a novel nitronyl nitroxide radical, an HPN derivative (HEPN) and investigated the protective effects of HEPN and HPN against HH-induced heart injury in mice and the underlying mechanisms of action. MAIN METHODS Mice were administered with HPN (200 mg/kg) or HEPN (200 mg/kg) 30 min before exposed to HH. The cardiac function was measured. Serum AST, CK, LDH and cTnI were estimated. Heart tissue oxidase activity, SOD, CAT, GSH-Px, ROS and MDA were estimated. ATP content, Na+/K+-ATPase and Ca2+/Mg2+-ATPase activity was measured. The expression of HIF-1, VEGF, Nrf2, HO-1, Bax, Bcl-2, Caspase-3 was estimated. KEY FINDINGS Results showed that pretreatment with HEPN or HPN led to a dramatic decrease in the activity of biochemical markers AST, CK, LDH and cTnI in murine serum. They increased the activity of SOD, CAT and GSH-Px and reduced the level of ROS and MDA in the hearts of mice. HEPN and HPN could increase the expression of Nrf2 and OH-1. They could maintain the ATPase activity. The Bax and Caspase-3 expression as well as the ratio of Bax/Bcl-2 were significantly downregulated and the Bcl-2 expression was upregulated by HPN or HEPN compared to the HH group. They may attenuate the HH-induced oxidant stress via free radical scavenging activity. SIGNIFICANCE The present study showed that the nitronyl nitroxide radical HEPN and HPN may be potential therapeutic agents for treatment of HH-induced cardiac dysfunction.
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Affiliation(s)
- Linlin Jing
- Department of Pharmacy, the 940th Hospital of Joint Logistics Support force of PLA, Lanzhou, Gansu 730050, PR China
| | - Jin Shao
- Department of Pharmacy, the 940th Hospital of Joint Logistics Support force of PLA, Lanzhou, Gansu 730050, PR China
| | - Wei Sun
- Department of Pharmacy, the 940th Hospital of Joint Logistics Support force of PLA, Lanzhou, Gansu 730050, PR China
| | - Ting Lan
- Department of Chemistry, School of Pharmacy, Fourth Military Medical University, XiAn, Shaanxi 710032, PR China
| | - Zhengping Jia
- Department of Pharmacy, the 940th Hospital of Joint Logistics Support force of PLA, Lanzhou, Gansu 730050, PR China
| | - Huiping Ma
- Department of Pharmacy, the 940th Hospital of Joint Logistics Support force of PLA, Lanzhou, Gansu 730050, PR China.
| | - Haibo Wang
- Department of Chemistry, School of Pharmacy, Fourth Military Medical University, XiAn, Shaanxi 710032, PR China.
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50
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Du X, Zhang R, Ye S, Liu F, Jiang P, Yu X, Xu J, Ma L, Cao H, Shen Y, Lin F, Wang Z, Li C. Alterations of Human Plasma Proteome Profile on Adaptation to High-Altitude Hypobaric Hypoxia. J Proteome Res 2019; 18:2021-2031. [PMID: 30908922 DOI: 10.1021/acs.jproteome.8b00911] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
For individuals migrating to or residing permanently in high-altitude regions, environmental hypobaric hypoxia is a primary challenge that induces several physiological or pathological responses. It is well documented that human beings adapt to hypobaric hypoxia via some protective mechanisms, such as erythropoiesis and overproduction of hemoglobin; however, little is known on the alterations of plasma proteome profiles in accommodation to high-altitude hypobaric hypoxia. In the present study, we investigated differential plasma proteomes of high altitude natives and lowland normal controls by a TMT-based proteomic approach. A total of 818 proteins were identified, of which 137 were differentially altered. Bioinformatics (including GO, KEGG, protein-protein interactions, etc.) analysis showed that the differentially altered proteins were basically involved in complement and coagulation cascades, antioxidative stress, and glycolysis. Validation results demonstrated that CCL18, C9, PF4, MPO, and S100A9 were notably up-regulated, and HRG and F11 were down-regulated in high altitude natives, which were consistent with TMT-based proteomic results. Our findings highlight the contributions of complement and coagulation cascades, antioxidative stress, and glycolysis in acclimatization to hypobaric hypoxia and provide a foundation for developing potential diagnostic or/and therapeutic biomarkers for high altitude hypobaric hypoxia-induced diseases.
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Affiliation(s)
- Xi Du
- Institute of Blood Transfusion , Chinese Academy of Medical Sciences & Peking Union Medical College , Chengdu 610052 , China
| | - Rong Zhang
- Institute of Blood Transfusion , Chinese Academy of Medical Sciences & Peking Union Medical College , Chengdu 610052 , China
| | - Shengliang Ye
- Institute of Blood Transfusion , Chinese Academy of Medical Sciences & Peking Union Medical College , Chengdu 610052 , China
| | - Fengjuan Liu
- Institute of Blood Transfusion , Chinese Academy of Medical Sciences & Peking Union Medical College , Chengdu 610052 , China
| | - Peng Jiang
- Institute of Blood Transfusion , Chinese Academy of Medical Sciences & Peking Union Medical College , Chengdu 610052 , China
| | - Xiaochuan Yu
- Department of Transfusion , Aba Prefecture People's Hospital , Ngawa Tibetan and Qiang Autonomous Prefecture 510530 , China
| | - Jin Xu
- Department of Chemistry , University of Massachusetts , Lowell , Massachusetts 01854 , United States
| | - Li Ma
- Institute of Blood Transfusion , Chinese Academy of Medical Sciences & Peking Union Medical College , Chengdu 610052 , China
| | - Haijun Cao
- Institute of Blood Transfusion , Chinese Academy of Medical Sciences & Peking Union Medical College , Chengdu 610052 , China
| | - Yuanzhen Shen
- Department of Transfusion , Aba Prefecture People's Hospital , Ngawa Tibetan and Qiang Autonomous Prefecture 510530 , China
| | - Fangzhao Lin
- Institute of Blood Transfusion , Chinese Academy of Medical Sciences & Peking Union Medical College , Chengdu 610052 , China
| | - Zongkui Wang
- Institute of Blood Transfusion , Chinese Academy of Medical Sciences & Peking Union Medical College , Chengdu 610052 , China.,Sichuan Blood Safety and Blood Substitute International Science and Technology Cooperation Base , Chengdu 610052 , China
| | - Changqing Li
- Institute of Blood Transfusion , Chinese Academy of Medical Sciences & Peking Union Medical College , Chengdu 610052 , China.,Sichuan Blood Safety and Blood Substitute International Science and Technology Cooperation Base , Chengdu 610052 , China
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