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Cheng HP, Feng DD, Li XH, Gao LH, Qiu YJ, Liang XY, Zhou Y, Huang P, Shao M, Zhang YN, Chang YF, Fu JF, Huang YH, Liu W, Tang SY, Li C, Luo ZQ. NMDA receptor activation induces damage of alveolar type II cells and lung fibrogenesis through ferroptosis. BIOCHIMICA ET BIOPHYSICA ACTA. MOLECULAR CELL RESEARCH 2023; 1870:119535. [PMID: 37451346 DOI: 10.1016/j.bbamcr.2023.119535] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/11/2023] [Revised: 07/03/2023] [Accepted: 07/05/2023] [Indexed: 07/18/2023]
Abstract
Ferroptosis, a newly discovered type of regulated cell death, has been implicated in numerous human diseases. Idiopathic pulmonary fibrosis (IPF) is a progressive and ultimately fatal interstitial lung disease with poor prognosis and limited treatment options. Emerging evidence has linked ferroptosis and glutamate-determined cell fate which is considered a new light on the etiology of pulmonary fibrosis. Here, we observed that N-methyl d-aspartate receptor (NMDAR) activation promoted cell damage and iron deposition in MLE-12 cells in a dose-, time-, and receptor-dependent manner. This mediated substantial Ca2+ influx, upregulated the expression levels of nNOS and IRP1, and affected intracellular iron homeostasis by regulating the expression of iron transport-related proteins (i.e., TFR1, DMT1, and FPN). Excessive iron load promoted the continuous accumulation of total intracellular and mitochondrial reactive oxygen species, which ultimately led to ferroptosis. NMDAR inhibition reduced lung injury and pulmonary fibrosis in bleomycin-induced mice. Bleomycin stimulation upregulated the expression of NMDAR1, nNOS, and IRP1 in mouse lung tissues, which ultimately led to iron deposition via regulation of the expression of various iron metabolism-related genes. NMDAR activation initiated the pulmonary fibrosis process by inducing iron deposition in lung tissues and ferroptosis of alveolar type II cells. Our data suggest that NMDAR activation regulates the expression of iron metabolism-related genes by promoting calcium influx, increasing nNOS and IRP1 expression, and increasing iron deposition by affecting cellular iron homeostasis, ultimately leading to mitochondrial damage, mitochondrial dysfunction, and ferroptosis. NMDAR activation-induced ferroptosis of alveolar type II cells might be a key event to the initiation of pulmonary fibrosis.
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Affiliation(s)
- Hai-Peng Cheng
- Department of Physiology, Xiangya School of Medicine, Central South University, Changsha, Hunan, China; Department of Pathology, The Second Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Dan-Dan Feng
- Department of Physiology, Xiangya School of Medicine, Central South University, Changsha, Hunan, China
| | - Xiao-Hong Li
- Department of Pathology, The Second Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Li-Hua Gao
- Department of Physiology, Xiangya School of Medicine, Central South University, Changsha, Hunan, China
| | - Yu-Jia Qiu
- Department of Physiology, Xiangya School of Medicine, Central South University, Changsha, Hunan, China
| | - Xing-Yue Liang
- Department of Physiology, Xiangya School of Medicine, Central South University, Changsha, Hunan, China
| | - Yan Zhou
- Department of Physiology, Xiangya School of Medicine, Central South University, Changsha, Hunan, China
| | - Pu Huang
- Department of Physiology, Xiangya School of Medicine, Central South University, Changsha, Hunan, China
| | - Min Shao
- Department of Physiology, Xiangya School of Medicine, Central South University, Changsha, Hunan, China
| | - Yun-Na Zhang
- Department of Physiology, Xiangya School of Medicine, Central South University, Changsha, Hunan, China
| | - Yan-Fen Chang
- Department of Physiology, Xiangya School of Medicine, Central South University, Changsha, Hunan, China
| | - Jia-Feng Fu
- Department of Physiology, Xiangya School of Medicine, Central South University, Changsha, Hunan, China
| | - Yan-Hong Huang
- Department of Physiology, Xiangya School of Medicine, Central South University, Changsha, Hunan, China
| | - Wei Liu
- Xiangya Nursing School, Central South University, Changsha, Hunan, China
| | - Si-Yuan Tang
- Xiangya Nursing School, Central South University, Changsha, Hunan, China
| | - Chen Li
- Department of Physiology, Changzhi Medical College, Changzhi, Shanxi, China.
| | - Zi-Qiang Luo
- Department of Physiology, Xiangya School of Medicine, Central South University, Changsha, Hunan, China; Hunan Key Laboratory of Organ Fibrosis, Central South University, Changsha, Hunan, China.
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Prophylactic Zinc Administration Combined with Swimming Exercise Prevents Cognitive-Emotional Disturbances and Tissue Injury following a Transient Hypoxic-Ischemic Insult in the Rat. Behav Neurol 2022; 2022:5388944. [PMID: 35637877 PMCID: PMC9146809 DOI: 10.1155/2022/5388944] [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: 07/29/2021] [Revised: 03/04/2022] [Accepted: 04/01/2022] [Indexed: 11/17/2022] Open
Abstract
Exercise performance and zinc administration individually yield a protective effect on various neurodegenerative models, including ischemic brain injury. Therefore, this work was aimed at evaluating the combined effect of subacute prophylactic zinc administration and swimming exercise in a transient cerebral ischemia model. The prophylactic zinc administration (2.5 mg/kg of body weight) was provided every 24 h for four days before a 30 min common carotid artery occlusion (CCAO), and 24 h after reperfusion, the rats were subjected to swimming exercise in the Morris Water Maze (MWM). Learning was evaluated daily for five days, and memory on day 12 postreperfusion; anxiety or depression-like behavior was measured by the elevated plus maze and the motor activity by open-field test. Nitrites, lipid peroxidation, and the activity of superoxide dismutase (SOD) and catalase (CAT) were assessed in the temporoparietal cortex and hippocampus. The three nitric oxide (NO) synthase isoforms, chemokines, and their receptor levels were measured by ELISA. Nissl staining evaluated hippocampus cytoarchitecture and Iba-1 immunohistochemistry activated the microglia. Swimming exercise alone could not prevent ischemic damage but, combined with prophylactic zinc administration, reversed the cognitive deficit, decreased NOS and chemokine levels, prevented tissue damage, and increased Iba-1 (+) cell number. These results suggest that the subacute prophylactic zinc administration combined with swimming exercise, but not the individual treatment, prevents the ischemic damage on day 12 postreperfusion in the transient ischemia model.
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Oliveira RF, Paiva KM, da Rocha GS, de Moura Freire MA, de Araújo DP, de Oliveira LC, Guzen FP, de Gois Morais PLA, de Paiva Cavalcanti JRL. Neurobiological effects of forced swim exercise on the rodent hippocampus: a systematic review. Acta Neurobiol Exp (Wars) 2021; 81:58-68. [PMID: 33949162 DOI: 10.21307/ane-2021-007] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2020] [Accepted: 01/26/2021] [Indexed: 11/11/2022]
Abstract
Forced swimming is a common exercise method used for its low cost and easy management, as seen in studies with the hippocampus. Since it is applied for varied research purposes many protocols are available with diverse aspects of physical intensity, time and periodicity, which produces variable outcomes. In the present study, we performed a systematic review to stress the neurobiological effects of forced swim exercise on the rodent hippocampus. Behavior, antioxidant levels, neurotrophins and inflammatory markers were the main topics examined upon the swimming effects. Better results among these analyses were associated with forced exercise at moderate intensity with an adaptation period and the opposite for continuous exhausting exercises with no adaptation. On further consideration, a standard swimming protocol is necessary to reduce variability of results for each scenario investigated about the impact of the forced swimming on the hippocampus. Forced swimming is a common exercise method used for its low cost and easy management, as seen in studies with the hippocampus. Since it is applied for varied research purposes many protocols are available with diverse aspects of physical intensity, time and periodicity, which produces variable outcomes. In the present study, we performed a systematic review to stress the neurobiological effects of forced swim exercise on the rodent hippocampus. Behavior, antioxidant levels, neurotrophins and inflammatory markers were the main topics examined upon the swimming effects. Better results among these analyses were associated with forced exercise at moderate intensity with an adaptation period and the opposite for continuous exhausting exercises with no adaptation. On further consideration, a standard swimming protocol is necessary to reduce variability of results for each scenario investigated about the impact of the forced swimming on the hippocampus.
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Affiliation(s)
- Rodrigo Freire Oliveira
- Laboratory of Experimental Neurology , Department of Biomedical Sciences , University of the State of Rio Grande do Norte , Brazil
| | - Karina Maia Paiva
- Laboratory of Experimental Neurology , Department of Biomedical Sciences , University of the State of Rio Grande do Norte , Brazil
| | - Gabriel Sousa da Rocha
- Laboratory of Experimental Neurology , Department of Biomedical Sciences , University of the State of Rio Grande do Norte , Brazil
| | - Marco Aurélio de Moura Freire
- Laboratory of Experimental Neurology , Department of Biomedical Sciences , University of the State of Rio Grande do Norte , Brazil
| | - Dayane Pessoa de Araújo
- Laboratory of Experimental Neurology , Department of Biomedical Sciences , University of the State of Rio Grande do Norte , Brazil
| | - Lucídio Cleberson de Oliveira
- Laboratory of Experimental Neurology , Department of Biomedical Sciences , University of the State of Rio Grande do Norte , Brazil
| | - Fausto Pierdoná Guzen
- Laboratory of Experimental Neurology , Department of Biomedical Sciences , University of the State of Rio Grande do Norte , Brazil
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Qi Y, Wang S, Luo Y, Huang W, Chen L, Zhang Y, Liang X, Tang J, Zhang Y, Zhang L, Chao F, Gao Y, Zhu Y, Tang Y. Exercise-induced Nitric Oxide Contributes to Spatial Memory and Hippocampal Capillaries in Rats. Int J Sports Med 2020; 41:951-961. [PMID: 32643775 DOI: 10.1055/a-1195-2737] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Exercise has been argued to improve cognitive function in both humans and rodents. Angiogenesis significantly contributes to brain health, including cognition. The hippocampus is a crucial brain region for cognitive function. However, studies quantifying the capillary changes in the hippocampus after running exercise are lacking. Moreover, the molecular details underlying the effects of running exercise remain poorly understood. We show that endogenous nitric oxide contributes to the beneficial effects of running exercise on cognition and hippocampal capillaries. Four weeks of running exercise significantly improved spatial memory ability and increased the number of capillaries in the cornu ammonis 1 subfield and dentate gyrus of Sprague-Dawley rats. Running exercise also significantly increased nitric oxide synthase activity and nitric oxide content in the rat hippocampus. After blocking the synthesis of endogenous nitric oxide by lateral ventricular injection of NG-nitro-L-arginine methyl ester, a nonspecific nitric oxide synthase inhibitor, the protective effect of running exercise on spatial memory was eliminated. The protective effect of running exercise on angiogenesis in the cornu ammonis 1 subfield and dentate gyrus of rats was also absent after nitric oxide synthase inhibition. Therefore, during running excise, endogenous nitric oxide may contribute to regulating spatial memory ability and angiogenesis in cornu ammonis 1 subfield and dentate gyrus of the hippocampus.
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Affiliation(s)
- Yingqiang Qi
- Department of Histology and Embryology, Chongqing Medical University, Chongqing, China.,Laboratory of Stem Cells and Tissue Engineering, Chongqing Medical University, Chongqing, China
| | - Sanrong Wang
- Department of Rehabilitation Medicine and Physical Therapy, Chongqing Medical University Affiliated Second Hospital, Chongqing, China
| | - Yanmin Luo
- Department of Physiology, Chongqing Medical University, Chongqing, China
| | - Wei Huang
- Department of Histology and Embryology, Chongqing Medical University, Chongqing, China.,Laboratory of Stem Cells and Tissue Engineering, Chongqing Medical University, Chongqing, China
| | - Linmu Chen
- Department of Histology and Embryology, Shenzhen Children's Hospital, Shenzhen, China
| | - Yi Zhang
- Department of Histology and Embryology, Chongqing Medical University, Chongqing, China.,Laboratory of Stem Cells and Tissue Engineering, Chongqing Medical University, Chongqing, China
| | - Xin Liang
- Department of Histology and Embryology, Chongqing Medical University, Chongqing, China.,Laboratory of Stem Cells and Tissue Engineering, Chongqing Medical University, Chongqing, China
| | - Jing Tang
- Department of Histology and Embryology, Chongqing Medical University, Chongqing, China.,Laboratory of Stem Cells and Tissue Engineering, Chongqing Medical University, Chongqing, China
| | - Yang Zhang
- Department of Histology and Embryology, Chongqing Medical University, Chongqing, China.,Laboratory of Stem Cells and Tissue Engineering, Chongqing Medical University, Chongqing, China
| | - Lei Zhang
- Department of Histology and Embryology, Chongqing Medical University, Chongqing, China.,Laboratory of Stem Cells and Tissue Engineering, Chongqing Medical University, Chongqing, China
| | - Fenglei Chao
- Department of Histology and Embryology, Chongqing Medical University, Chongqing, China.,Laboratory of Stem Cells and Tissue Engineering, Chongqing Medical University, Chongqing, China
| | - Yuan Gao
- Department of Geriatrics, Chongqing Medical University First Affiliated Hospital, Chongqing, China
| | - Yanqing Zhu
- Department of Histology and Embryology, Chongqing Medical University, Chongqing, China.,Laboratory of Stem Cells and Tissue Engineering, Chongqing Medical University, Chongqing, China
| | - Yong Tang
- Department of Histology and Embryology, Chongqing Medical University, Chongqing, China.,Laboratory of Stem Cells and Tissue Engineering, Chongqing Medical University, Chongqing, China
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Zhou H, Yin C, Zhang Z, Tang H, Shen W, Zha X, Gao M, Sun J, Xu X, Chen Q. Proanthocyanidin promotes functional recovery of spinal cord injury via inhibiting ferroptosis. J Chem Neuroanat 2020; 107:101807. [PMID: 32474063 DOI: 10.1016/j.jchemneu.2020.101807] [Citation(s) in RCA: 43] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2019] [Revised: 04/19/2020] [Accepted: 05/22/2020] [Indexed: 02/06/2023]
Abstract
Improving the microenvironment of lesioned spinal cord to minimize the secondary injury is one important strategy to treat spinal cord injury (SCI). The ensuing hemorrhage after SCI has tight connection with ferroptosis. This study investigated the effects of proanthocyanidins (PACs) on SCI repair and the underlying mechanisms. Adult female mice were divided into four groups, including sham, SCI, PACs5 and PACs10 (i.p. 5 and 10 mg/kg PACs after SCI respectively). The impacts of SCI and PACs treatment on redox parameters (iron contents, TBARS, GSH, and GPX activities) and ferroptosis essential factors such as ACSL4, LPCAT3, Alox15B, Nrf2, HO-1, GPX4 were investigated. The results demonstrated that PACs treatment significantly decreased the levels of iron, TBARS, ACSL4, and Alox15B, while increased the levels of GSH, GPX4, Nrf2, and HO-1 in traumatic spinal cords. Above all, PACs improved the locomotive function of SCI mice. These results suggest that PACs might be potential therapeutics for SCI repair by inhibiting ferroptosis in SCI.
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Affiliation(s)
- Huangao Zhou
- Emergency Department, Jiangyin People's Hospital, Jiangsu, China
| | - Chaoyun Yin
- Department of General Surgery, Affiliated Hospital of Jiangsu University, Jiangsu, China
| | - Zhiming Zhang
- School of Medicine, Jiangsu University, Jiangsu, China
| | - Haowen Tang
- School of Medicine, Jiangsu University, Jiangsu, China
| | - Wen Shen
- School of Medicine, Jiangsu University, Jiangsu, China
| | - Xuan Zha
- School of Medicine, Jiangsu University, Jiangsu, China
| | - Ming Gao
- School of Medicine, Jiangsu University, Jiangsu, China
| | - Jifu Sun
- Department of Orthopedic Surgery, Affiliated Hospital of Jiangsu University, Jiangsu, China
| | - Xiuquan Xu
- School of Pharmacy, Jiangsu University, Jiangsu, China
| | - Qian Chen
- School of Medicine, Jiangsu University, Jiangsu, China.
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Proanthocyanidins prevent ethanol-induced cognitive impairment by suppressing oxidative and inflammatory stress in adult rat brain. Neuroreport 2018; 28:980-986. [PMID: 28877101 DOI: 10.1097/wnr.0000000000000867] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
Excessive chronic alcohol consumption enhances brain oxidative and inflammatory stress, resulting in cognitive deficit. This study investigated the potential alleviating effects of proanthocyanidins (PACs) on ethanol-induced cognitive impairment and stress in brain regions including the prefrontal cortex, hippocampus, and amygdala. Adult male rats were administered saline, PACs, ethanol, or combinations of ethanol with different doses of PACs for 8 weeks. Then, the Morris water-maze test was performed. Thiobarbituric acid-reactive substances, superoxide dismutase activity, total antioxidant capacity, and nitric oxide were chosen as parameters of oxidative stress, whereas tumor necrosis factor-α and interleukin-1β chosen as parameters of inflammatory stress. The results indicated that ethanol led to cognitive impairment along with enhanced oxidative and inflammatory stress in brain regions, whereas PACs per se had no significant effects. Moreover, coadministration with PACs in ethanol-treated rats dose dependently rescued cognitive impairment accompanied by suppressed oxidative and inflammatory stress in brain regions. Thus, the protective effects of PACs on ethanol-induced cognitive impairments may be because of their antioxidant and anti-inflammatory activities.
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Majzúnová M, Pakanová Z, Kvasnička P, Bališ P, Čačányiová S, Dovinová I. Age-dependent redox status in the brain stem of NO-deficient hypertensive rats. J Biomed Sci 2017; 24:72. [PMID: 28893245 PMCID: PMC5594586 DOI: 10.1186/s12929-017-0366-4] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2016] [Accepted: 08/09/2017] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND The brain stem contains important nuclei that control cardiovascular function via the sympathetic nervous system (SNS), which is strongly influenced by nitric oxide. Its biological activity is also largely determined by oxygen free radicals. Despite many experimental studies, the role of AT1R-NAD(P)H oxidase-superoxide pathway in NO-deficiency is not yet sufficiently clarified. We determined changes in free radical signaling and antioxidant and detoxification response in the brain stem of young and adult Wistar rats during chronic administration of exogenous NO inhibitors. METHODS Young (4 weeks) and adult (10 weeks) Wistar rats were treated with 7-nitroindazole (7-NI group, 10 mg/kg/day), a specific nNOS inhibitor, with NG-nitro-L-arginine-methyl ester (L-NAME group, 50 mg/kg/day), a nonspecific NOS inhibitor, and with drinking water (Control group) during 6 weeks. Systolic blood pressure was measured by non-invasive plethysmography. Expression of genes (AT1R, AT2R, p22phox, SOD and NOS isoforms, HO-1, MDR1a, housekeeper GAPDH) was identified by real-time PCR. NOS activity was detected by conversion of [3H]-L-arginine to [3H]-L-citrulline and SOD activity was measured using UV VIS spectroscopy. RESULTS We observed a blood pressure elevation and decrease in NOS activity only after L-NAME application in both age groups. Gene expression of nNOS (youngs) and eNOS (adults) in the brain stem decreased after both inhibitors. The radical signaling pathway triggered by AT1R and p22phox was elevated in L-NAME adults, but not in young rats. Moreover, L-NAME-induced NOS inhibition increased antioxidant response, as indicated by the observed elevation of mRNA SOD3, HO-1, AT2R and MDR1a in adult rats. 7-NI did not have a significant effect on AT1R-NADPH oxidase-superoxide pathway, yet it affected antioxidant response of mRNA expression of SOD1 and stimulated total activity of SOD in young rats and mRNA expression of AT2R in adult rats. CONCLUSION Our results show that chronic NOS inhibition by two different NOS inhibitors has age-dependent effect on radical signaling and antioxidant/detoxificant response in Wistar rats. While 7-NI had neuroprotective effect in the brain stem of young Wistar rats, L-NAME- induced NOS inhibition evoked activation of AT1R-NAD(P)H oxidase pathway in adult Wistar rats. Triggering of the radical pathway was followed by activation of protective compensation mechanism at the gene expression level.
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Affiliation(s)
- Miroslava Majzúnová
- Institute of Normal and Pathological Physiology, Slovak Academy of Sciences, Sienkiewiczova 1, 813 71, Bratislava, Slovakia
| | - Zuzana Pakanová
- Institute of Chemistry, Slovak Academy of Sciences, Bratislava, Slovakia
| | - Peter Kvasnička
- Institute of Particle and Nuclear Physics, Faculty of Mathematics and Physics, Charles University, Prague, Czech Republic
| | - Peter Bališ
- Institute of Normal and Pathological Physiology, Slovak Academy of Sciences, Sienkiewiczova 1, 813 71, Bratislava, Slovakia
| | - Soňa Čačányiová
- Institute of Normal and Pathological Physiology, Slovak Academy of Sciences, Sienkiewiczova 1, 813 71, Bratislava, Slovakia
| | - Ima Dovinová
- Institute of Normal and Pathological Physiology, Slovak Academy of Sciences, Sienkiewiczova 1, 813 71, Bratislava, Slovakia.
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Wu HB, Xiao DS. Regulation of trace elements and redox status in striatum of adult rats by long-term aerobic exercise depends on iron uptakes. Neurosci Lett 2017; 642:66-70. [PMID: 28163077 DOI: 10.1016/j.neulet.2017.01.070] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2016] [Revised: 01/28/2017] [Accepted: 01/31/2017] [Indexed: 01/30/2023]
Abstract
We investigated the effects of aerobic exercise (AE) on trace element contents and redox status in the striatum of rats with different diet iron. Weaned female rats were randomly fed with iron-adequate diet (IAD), iron-deficient diet (IDD), and iron-overloaded diet (IOD). After feeding their respective diet for 1 month, the rats fed with same diet were divided into swimming and maintaining sedentary (S) group. After 3 months, the non-heme iron (NHI), Mn, Cu, and Zn in the striatum were measured. Meanwhile, malonaldehyde acid (MDA), total superoxide dismutase activity, hydroxyl radical scavenging activity, and total antioxidant capacity were also analyzed. As compared with respective S rats, Mn, Cu, and Zn contents were significantly decreased in IDDE, but no significantly changes could be seen in IADE or IODE. A negative correlation of NHI with Cu contents in IDDE and positive correlations of NHI with Cu, or Zn contents in IADE, or with Mn or Cu contents in IODE were observed. In addition, striatum MDA was significantly decreased and anti-oxidative variables were increased in IODE compared to IODS. Our results suggest that the modification of trace elements and redox status in the striatum of rats caused by AE depends on dietary iron contents and that AE may also regulate the metabolic relationship of iron storage with other trace elements.
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Affiliation(s)
- Hua-Bo Wu
- Department of Food Quality and Safety, School of Food and Biological Engineering, Jiangsu University, Zhenjiang, Jiangsu Province, China
| | - De-Sheng Xiao
- Department of Preventive Medicine, School of Public Health, Guangzhou Medical University, Guangzhou, Guangdong Province, China.
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González-Castillo C, Ortuño-Sahagún D, Guzmán-Brambila C, Márquez-Aguirre AL, Raisman-Vozari R, Pallás M, Rojas-Mayorquín AE. The absence of pleiotrophin modulates gene expression in the hippocampus in vivo and in cerebellar granule cells in vitro. Mol Cell Neurosci 2016; 75:113-21. [PMID: 27468976 DOI: 10.1016/j.mcn.2016.07.004] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2015] [Revised: 07/04/2016] [Accepted: 07/25/2016] [Indexed: 12/28/2022] Open
Abstract
Pleiotrophin (PTN) is a secreted growth factor recently proposed to act as a neuromodulatory peptide in the Central Nervous System. PTN appears to be involved in neurodegenerative diseases and neural disorders, and it has also been implicated in learning and memory. Specifically, PTN-deficient mice exhibit a lower threshold for LTP induction in the hippocampus, which is attenuated in mice overexpressing PTN. However, there is little information about the signaling systems recruited by PTN to modulate neural activity. To address this issue, the gene expression profile in hippocampus of mice lacking PTN was analyzed using microarrays of 22,000 genes. In addition, we corroborated the effect of the absence of PTN on the expression of these genes by silencing this growth factor in primary neuronal cultures in vitro. The microarray analysis identified 102 genes that are differentially expressed (z-score>3.0) in PTN null mice, and the expression of eight of those modified in the hippocampus of KO mice was also modified in vitro after silencing PTN in cultured neurons with siRNAs. The data obtained indicate that the absence of PTN affects AKT pathway response and modulates the expression of genes related with neuroprotection (Mgst3 and Estrogen receptor 1, Ers 1) and cell differentiation (Caspase 6, Nestin, and Odz4), both in vivo and in vitro.
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Affiliation(s)
- Celia González-Castillo
- Doctorado en Ciencias en Biología Molecular en Medicina (DCBMM), CUCS, Universidad de Guadalajara, Jalisco, Mexico
| | - Daniel Ortuño-Sahagún
- Instituto de Investigación en Ciencias Biomédicas (IICB), CUCS, Universidad de Guadalajara, Jalisco, Mexico.
| | - Carolina Guzmán-Brambila
- Tecnológico de Monterrey, División de Biotecnología y Salud, Escuela de Medicina, Campus Guadalajara, Jalisco, Mexico
| | - Ana Laura Márquez-Aguirre
- Unidad de Biotecnología Médica y Farmacéutica, Centro de Investigación y Asistencia en Tecnología y Diseño del Estado de Jalisco A.C., 44270 Guadalajara, Jalisco, Mexico
| | - Rita Raisman-Vozari
- Sorbonne Université UPMC UM75 INSERM U1127, CNRS UMR 7225, Institut du Cerveau et de la Moelle Epinière, Paris, France
| | - Mercé Pallás
- Department of Pharmacology and Medical Chemistry, Faculty of Pharmacy, Institute of Neuroscience (INUB), Centros de Investigación Biomédica en Red de Enfermedades Neurodegenerativas (CIBERNED), University of Barcelona, Spain
| | - Argelia E Rojas-Mayorquín
- Departamento de Ciencias Ambientales, Instituto de Neurociencias, CUCBA, Universidad de Guadalajara, Jalisco, Mexico.
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10
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Banoujaafar H, Monnier A, Pernet N, Quirié A, Garnier P, Prigent-Tessier A, Marie C. Brain BDNF levels are dependent on cerebrovascular endothelium-derived nitric oxide. Eur J Neurosci 2016; 44:2226-35. [PMID: 27306299 DOI: 10.1111/ejn.13301] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2015] [Revised: 06/07/2016] [Accepted: 06/09/2016] [Indexed: 11/29/2022]
Abstract
Scientific evidence continues to demonstrate a link between endothelial function and cognition. Besides, several studies have identified a complex interplay between nitric oxide (NO) and brain-derived neurotrophic factor (BDNF), a neurotrophin largely involved in cognition. Therefore, this study investigated the link between cerebral endothelium-derived NO and BDNF signaling. For this purpose, levels of BDNF and the phosphorylated form of endothelial NO synthase at serine 1177 (p-eNOS) were simultaneously measured in the cortex and hippocampus of rats subjected to either bilateral common carotid occlusion (n = 6), physical exercise (n = 6) or a combination of both (n = 6) as experimental approaches to modulate flow-induced NO production by the cerebrovasculature. Tropomyosin-related kinase type B (TrkB) receptors and its phosphorylated form at tyrosine 816 (p-TrkB) were also measured. Moreover, we investigated BDNF synthesis in brain slices exposed to the NO donor glyceryl trinitrate. Our results showed increased p-eNOS and BDNF levels after exercise and decreased levels after vascular occlusion as compared to corresponding controls, with a positive correlation between changes in p-eNOS and BDNF (r = 0.679). Exercise after vascular occlusion did not change levels of these proteins. Gyceryl trinitrate increased proBDNF and BDNF levels in brain slices, thus suggesting a possible causal relationship between NO and BDNF. Moreover, vascular occlusion, like exercise, resulted in increased TrkB and p-TrkB levels, whereas no change was observed with the combination of both. These results suggest that brain BDNF signaling may be dependent on cerebral endothelium-derived NO production.
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Affiliation(s)
- Hayat Banoujaafar
- Unité INSERM U1093 Cognition, Action et Plasticité Sensorimotrice, University of Bourgogne Franche Comté, F-21000, Dijon, France
| | - Alice Monnier
- Unité INSERM U1093 Cognition, Action et Plasticité Sensorimotrice, University of Bourgogne Franche Comté, F-21000, Dijon, France.,Department of Rehabilitation, University Hospital, Dijon, France
| | - Nicolas Pernet
- Unité INSERM U1093 Cognition, Action et Plasticité Sensorimotrice, University of Bourgogne Franche Comté, F-21000, Dijon, France
| | - Aurore Quirié
- Unité INSERM U1093 Cognition, Action et Plasticité Sensorimotrice, University of Bourgogne Franche Comté, F-21000, Dijon, France
| | - Philippe Garnier
- Unité INSERM U1093 Cognition, Action et Plasticité Sensorimotrice, University of Bourgogne Franche Comté, F-21000, Dijon, France.,IUT de Dijon, Département de Génie Biologique, Université de Bourgogne, Dijon, France
| | - Anne Prigent-Tessier
- Unité INSERM U1093 Cognition, Action et Plasticité Sensorimotrice, University of Bourgogne Franche Comté, F-21000, Dijon, France
| | - Christine Marie
- Unité INSERM U1093 Cognition, Action et Plasticité Sensorimotrice, University of Bourgogne Franche Comté, F-21000, Dijon, France
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Tastekin E, Palabiyik O, Ulucam E, Uzgur S, Karaca A, Vardar SA, Yilmaz A, Aydogdu N. The effect of high protein diet and exercise on irisin, eNOS, and iNOS expressions in kidney. Ren Fail 2016; 38:1107-14. [DOI: 10.1080/0886022x.2016.1194163] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
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Nishijima T, Torres-Aleman I, Soya H. Exercise and cerebrovascular plasticity. PROGRESS IN BRAIN RESEARCH 2016; 225:243-68. [PMID: 27130419 DOI: 10.1016/bs.pbr.2016.03.010] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Aging impairs cerebrovascular plasticity and subsequently leads cerebral hypoperfusion, which synergistically accelerates aging-associated cognitive dysfunction and neurodegenerative diseases associated with impaired neuronal plasticity. On the other hand, over two decades of researches have successfully demonstrated that exercise, or higher level of physical activity, is a powerful and nonpharmacological approach to improve brain function. Most of the studies have focused on the neuronal aspects and found that exercise triggers improvements in neuronal plasticity, such as neurogenesis; however, exercise can improve cerebrovascular plasticity as well. In this chapter, to understand these beneficial effects of exercise on the cerebral vasculature, we first discuss the issue of changes in cerebral blood flow and its regulation during acute bouts of exercise. Then, how regular exercise improves cerebrovascular plasticity will be discussed. In addition, to shed light on the importance of understanding interactions between the neuron and cerebral vasculature, we describe neuronal activity-driven uptake of circulating IGF-I into the brain.
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Affiliation(s)
- T Nishijima
- Tokyo Metropolitan University, Tokyo, Japan.
| | | | - H Soya
- University of Tsukuba, Ibaraki, Japan
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13
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[Concentration enhancement for retaining daily living competence in dementia]. Z Gerontol Geriatr 2015; 50:28-34. [PMID: 26608038 DOI: 10.1007/s00391-015-0982-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2015] [Revised: 09/30/2015] [Accepted: 10/22/2015] [Indexed: 10/22/2022]
Abstract
BACKGROUND Dementia is characterized by reduced memory and concentration abilities leading to a decrease in activities of daily living. Various studies have shown that various forms of physical exercise have a positive therapeutic effect at an early stage of dementia. OBJECTIVE In the present study the effects of an exercise-based Brain-Gym concept on the concentration and routine daily competences were evaluated in dementia patients. MATERIAL AND METHODS During a 4-month intervention period specially trained nursing staff and healthcare students put this exercise program into practice. Using an intervention and control group design, the concentration abilities of the dementia patients were tested on a monthly base. Additionally, the routine daily competence of the patients was evaluated by the nursing staff. RESULTS Even though no significant differences could be detected, the intervention group achieved higher scores in concentration abilities than the control group on all four testing dates. Furthermore, the routine daily competence was improved in the intervention group throughout the intervention period. CONCLUSION This concept can be used for dementia patients. Due to the low requirements concerning coordination and condition Brain-Gym is suitable for the target group and can easily be implemented by caregivers; however, significant evidence of positive impacts on concentration and everyday life competence could not yet be found in this study.
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15
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Lu Q, Harris VA, Rafikov R, Sun X, Kumar S, Black SM. Nitric oxide induces hypoxia ischemic injury in the neonatal brain via the disruption of neuronal iron metabolism. Redox Biol 2015. [PMID: 26209813 PMCID: PMC4804102 DOI: 10.1016/j.redox.2015.06.007] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
We have recently shown that increased hydrogen peroxide (H2O2) generation is involved in hypoxia–ischemia (HI)-mediated neonatal brain injury. H2O2 can react with free iron to form the hydroxyl radical, through Fenton Chemistry. Thus, the objective of this study was to determine if there was a role for the hydroxyl radical in neonatal HI brain injury and to elucidate the underlying mechanisms. Our data demonstrate that HI increases the deposition of free iron and hydroxyl radical formation, in both P7 hippocampal slice cultures exposed to oxygen–glucose deprivation (OGD), and the neonatal rat exposed to HI. Both these processes were found to be nitric oxide (NO) dependent. Further analysis demonstrated that the NO-dependent increase in iron deposition was mediated through increased transferrin receptor expression and a decrease in ferritin expression. This was correlated with a reduction in aconitase activity. Both NO inhibition and iron scavenging, using deferoxamine administration, reduced hydroxyl radical levels and neuronal cell death. In conclusion, our results suggest that increased NO generation leads to neuronal cell death during neonatal HI, at least in part, by altering iron homeostasis and hydroxyl radical generation. HI increases the deposition of free iron and hydroxyl radical formation in the neonatal brain. Both these processes are NO dependent. Increased iron deposition is mediated via increased TfR and decreased ferritin expression. These processes are involved in the neuronal cell death associated with neonatal HI.
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Affiliation(s)
- Qing Lu
- Department of Neuroscience and Regenerative Medicine, Georgia Regents University, Augusta, GA 30912, USA
| | - Valerie A Harris
- Vascular Biology Center, Georgia Regents University, Augusta, GA 30912, USA
| | - Ruslan Rafikov
- Division of Translational and Regenerative Medicine, Department of Medicine, University of Arizona, Tucson, AZ 85724, USA
| | - Xutong Sun
- Division of Translational and Regenerative Medicine, Department of Medicine, University of Arizona, Tucson, AZ 85724, USA
| | - Sanjiv Kumar
- Vascular Biology Center, Georgia Regents University, Augusta, GA 30912, USA
| | - Stephen M Black
- Division of Translational and Regenerative Medicine, Department of Medicine, University of Arizona, Tucson, AZ 85724, USA.
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Galdino GS, Duarte ID, Perez AC. Central release of nitric oxide mediates antinociception induced by aerobic exercise. ACTA ACUST UNITED AC 2014; 48:790-7. [PMID: 25517916 PMCID: PMC4568806 DOI: 10.1590/1414-431x20144160] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2014] [Accepted: 10/06/2014] [Indexed: 01/01/2023]
Abstract
Nitric oxide (NO) is a soluble gas that participates in important functions of the
central nervous system, such as cognitive function, maintenance of synaptic
plasticity for the control of sleep, appetite, body temperature, neurosecretion, and
antinociception. Furthermore, during exercise large amounts of NO are released that
contribute to maintaining body homeostasis. Besides NO production, physical exercise
has been shown to induce antinociception. Thus, the present study aimed to
investigate the central involvement of NO in exercise-induced antinociception. In
both mechanical and thermal nociceptive tests, central [intrathecal
(it) and intracerebroventricular (icv)]
pretreatment with inhibitors of the NO/cGMP/KATP pathway (L-NOArg, ODQ,
and glybenclamide) prevented the antinociceptive effect induced by aerobic exercise
(AE). Furthermore, pretreatment (it, icv) with
specific NO synthase inhibitors (L-NIO, aminoguanidine, and L-NPA) also prevented
this effect. Supporting the hypothesis of the central involvement of NO in
exercise-induced antinociception, nitrite levels in the cerebrospinal fluid increased
immediately after AE. Therefore, the present study suggests that, during exercise,
the NO released centrally induced antinociception.
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Affiliation(s)
- G S Galdino
- Curso de Fisioterapia, Escola de Enfermagem, Universidade Federal de Alfenas, Alfenas, MG, BR
| | - I D Duarte
- Departamento de Farmacologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, BR
| | - A C Perez
- Departamento de Farmacologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, BR
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