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Retraction: Nicotinamide Inhibits Alkylating Agent-Induced Apoptotic Neurodegeneration in the Developing Rat Brain. PLoS One 2024; 19:e0301150. [PMID: 38512847 PMCID: PMC10956766 DOI: 10.1371/journal.pone.0301150] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/23/2024] Open
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Hackett EP, Chen J, Ingle L, Nemri SA, Barshikar S, da Cunha Pinho M, Plautz EJ, Bartnik-Olson BL, Park JM. Longitudinal assessment of mitochondrial dysfunction in acute traumatic brain injury using hyperpolarized [1- 13 C]pyruvate. Magn Reson Med 2023; 90:2432-2442. [PMID: 37427535 PMCID: PMC10543630 DOI: 10.1002/mrm.29794] [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: 05/14/2023] [Revised: 06/19/2023] [Accepted: 06/21/2023] [Indexed: 07/11/2023]
Abstract
PURPOSE [13 C]Bicarbonate formation from hyperpolarized [1-13 C]pyruvate via pyruvate dehydrogenase, a key regulatory enzyme, represents the cerebral oxidation of pyruvate and the integrity of mitochondrial function. The present study is to characterize the chronology of cerebral mitochondrial metabolism during secondary injury associated with acute traumatic brain injury (TBI) by longitudinally monitoring [13 C]bicarbonate production from hyperpolarized [1-13 C]pyruvate in rodents. METHODS Male Wistar rats were randomly assigned to undergo a controlled-cortical impact (CCI, n = 31) or sham surgery (n = 22). Seventeen of the CCI and 9 of the sham rats longitudinally underwent a 1 H/13 C-integrated MR protocol that includes a bolus injection of hyperpolarized [1-13 C]pyruvate at 0 (2 h), 1, 2, 5, and 10 days post-surgery. Separate CCI and sham rats were used for histological validation and enzyme assays. RESULTS In addition to elevated lactate, we observed significantly reduced bicarbonate production in the injured site. Unlike the immediate appearance of hyperintensity on T2 -weighted MRI, the contrast of bicarbonate signals between the injured region and the contralateral brain peaked at 24 h post-injury, then fully recovered to the normal level at day 10. A subset of TBI rats demonstrated markedly increased bicarbonate in normal-appearing contralateral brain regions post-injury. CONCLUSION This study demonstrates that aberrant mitochondrial metabolism occurring in acute TBI can be monitored by detecting [13 C]bicarbonate production from hyperpolarized [1-13 C]pyruvate, suggesting that [13 C]bicarbonate is a sensitive in-vivo biomarker of the secondary injury processes.
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Affiliation(s)
- Edward P. Hackett
- Advanced Imaging Research Center, The University of Texas Southwestern Medical Center, Dallas TX USA 75390
| | - Jun Chen
- Advanced Imaging Research Center, The University of Texas Southwestern Medical Center, Dallas TX USA 75390
| | - Laura Ingle
- Department of Neurology and Neurotherapeutics, The University of Texas Southwestern Medical Center, Dallas TX USA 75390
| | - Sarah Al Nemri
- Advanced Imaging Research Center, The University of Texas Southwestern Medical Center, Dallas TX USA 75390
| | - Surendra Barshikar
- Department of Physical Medicine and Rehabilitation, The University of Texas Southwestern Medical Center, Dallas TX USA 75390
| | - Marco da Cunha Pinho
- Department of Radiology, The University of Texas Southwestern Medical Center, Dallas TX USA 75390
| | - Erik J. Plautz
- Department of Neurology and Neurotherapeutics, The University of Texas Southwestern Medical Center, Dallas TX USA 75390
| | | | - Jae Mo Park
- Advanced Imaging Research Center, The University of Texas Southwestern Medical Center, Dallas TX USA 75390
- Department of Radiology, The University of Texas Southwestern Medical Center, Dallas TX USA 75390
- Department of Biomedical Engineering, The University of Texas Southwestern Medical Center, Dallas TX USA 75390
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Tao L, Zhang L, Gao R, Jiang F, Cao J, Liu H. Andrographolide Alleviates Acute Brain Injury in a Rat Model of Traumatic Brain Injury: Possible Involvement of Inflammatory Signaling. Front Neurosci 2018; 12:657. [PMID: 30294256 PMCID: PMC6158349 DOI: 10.3389/fnins.2018.00657] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2018] [Accepted: 09/03/2018] [Indexed: 12/17/2022] Open
Abstract
Neuroinflammation plays an important role in secondary injury after traumatic brain injury (TBI). Andrographolide (Andro), a diterpenoid lactone isolated from Andrographis paniculata, has been demonstrated to exhibit anti-inflammatory activity in neurodegenerative disorders. This study therefore aimed to investigate the potential neuroprotective effects of Andro after TBI and explore the underlying mechanisms. In our study, we used a weight-dropped model to induce TBI in Sprague–Dawley rats, the neurological deficits were assessed using modified neurological severity scores, Fluoro-Jade B (FJB) and terminal deoxynucleotidyl transferase (TdT) dUTP Nick-End Labeling (TUNEL) staining were employed to examine neuronal degeneration and apoptosis after TBI, immunofluorescence was designed to investigate microglial activation. Quantitative Real-time PCR and ELISA were conducted to detect the expression levels of pro-inflammatory cytokines, Western blot was used to examine the expression level of proteins of relative signaling pathway. Our results showed that after Andro administration, the neurological deficit was attenuated, and the cerebral edema and apoptosis in brain tissues were also decreased following TBI. Both microglial activation and the expression of pro-inflammatory cytokines were significantly inhibited by Andro after TBI. Moreover, Andro inhibited NF-κB p65 subunit translocation and decreased the expression levels of phosphorylated extracellular signal regulated kinase (ERK) and p38 MAPK after TBI. Altogether, this study suggests that Andro could improve neurobehavioral function by inhibiting NF-κB and MAPK signaling pathway in TBI, which might provide a new approach for treating brain injury.
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Affiliation(s)
- Li Tao
- Department of Pharmacy and Translational Medicine Center, Zhangjiagang First People's Hospital, Suzhou, China
| | - Li Zhang
- Department of Neurosurgery, Zhangjiagang First People's Hospital, Suzhou, China
| | - Rong Gao
- Department of Neurosurgery, Zhangjiagang First People's Hospital, Suzhou, China
| | - Feng Jiang
- Department of Neurosurgery, Zhangjiagang First People's Hospital, Suzhou, China
| | - Jianbo Cao
- Department of Pharmacy and Translational Medicine Center, Zhangjiagang First People's Hospital, Suzhou, China
| | - Huixiang Liu
- Department of Neurosurgery, Zhangjiagang First People's Hospital, Suzhou, China
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Liu J, Sui H, Zhao J, Wang Y. Osmotin Protects H9c2 Cells from Simulated Ischemia-Reperfusion Injury through AdipoR1/PI3K/AKT Signaling Pathway. Front Physiol 2017; 8:611. [PMID: 28993734 PMCID: PMC5622187 DOI: 10.3389/fphys.2017.00611] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2017] [Accepted: 08/09/2017] [Indexed: 01/04/2023] Open
Abstract
Objective: This study aimed to investigate the effect of osmotin on myocardial ischemia/reperfusion (I/R), as well as the underlying mechanisms. Methods:In vitro I/R injury model was established on rat cardiac myoblast H9c2 cells by oxygen and glucose deprivation followed by reperfusion (OGD/R). Cells were administrated with osmotin, and transfected with small interfering RNAs (siRNAs) which specifically target adiponectin receptor 1 or 2 (AdipoR1/2). Besides, the cells were incubated with or without LY294002 as inhibitor of phosphatidylinositol 3-kinase (PI3K) under OGD/R condition. Cell viability, apoptosis, expressions of apoptosis-related proteins and inflammatory factors were analyzed. Results: The results showed that osmotin significantly increased H9c2 cells viability compared with the cells treated with vehicle (P < 0.05), and decreased H9c2 cells apoptosis by regulating expressions of apoptosis-related proteins. Moreover, we observed that osmotin statistically reduced the release of proinflammatory factors and increased the release of anti-inflammatory factors in H9c2 cells (P < 0.05). However, these effects were markedly reversed by AdipoR1 silence but not AdipoR2. Furthermore, osmotin dramatically upregulated the phosphorylation levels of PI3K, AKT, ERK, and downregulated the phosphorylation level of NF-κB (P < 0.05). While administration of LY294002 reduced cell viability, increased cell apoptosis, and aggravated inflammatory response (P < 0.05). Conclusion: Our results suggested that the protective effect of osmotin on the simulated OGD/R injured H9c2 cells might be associated with AdipoR1/PI3K/AKT signaling pathway.
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Affiliation(s)
- Jianhua Liu
- Department of Cardiology, Xinxiang Central HospitalXinxiang, Henan, China
| | - Hua Sui
- Department of Endocrinology, Xinxiang Central HospitalXinxiang, Henan, China
| | - Jianlin Zhao
- Department of Endocrinology, Xinxiang Central HospitalXinxiang, Henan, China
| | - Yan Wang
- Department of Cardiology, Xinxiang Central HospitalXinxiang, Henan, China
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Gavin DP, Kusumo H, Sharma RP, Guizzetti M. Ethanol-induced changes in poly (ADP ribose) polymerase and neuronal developmental gene expression. Neuropharmacology 2016; 110:287-296. [PMID: 27497606 DOI: 10.1016/j.neuropharm.2016.08.001] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2016] [Revised: 08/02/2016] [Accepted: 08/03/2016] [Indexed: 01/20/2023]
Abstract
Prenatal alcohol exposure has profound effects on neuronal growth and development. Poly-ADP Ribose Polymerase (PARP) enzymes are perhaps unique in the field of epigenetics in that they directly participate in histone modifications, transcription factor modifications, DNA methylation/demethylation and are highly inducible by ethanol. It was our hypothesis that ethanol would induce PARP enzymatic activity leading to alterations in neurodevelopmental gene expression. Mouse E18 cortical neurons were treated with ethanol, PARP inhibitors, and nuclear hormone receptor transcription factor PPARγ agonists and antagonists. Subsequently, we measured PARP activity and changes in Bdnf, OKSM (Oct4, Klf4, Sox2, c-Myc), DNA methylating/demethylating factors, and Pparγ mRNA expression, promoter 5-methylcytosine (5MC) and 5-hydroxymethylcytosine (5HMC), and PPARγ promoter binding. We found that ethanol reduced Bdnf4, 9a, and Klf4 mRNA expression, and increased c-Myc expression. These changes were reversed with a PARP inhibitor. In agreement with its role in DNA demethylation PARP inhibition increased 5MC levels at the c-Myc promoter. In addition, we found that inhibition of PARP enzymatic activity increased PPARγ promoter binding, and this corresponded to increased Bdnf and Klf4 mRNA expression. Our results suggest that PARP participates in DNA demethylation and reduces PPARγ promoter binding. The current study underscores the importance of PARP in ethanol-induced changes to neurodevelopmental gene expression.
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Affiliation(s)
- David P Gavin
- Jesse Brown Veterans Affairs Medical Center, 820 South Damen Avenue (M/C 151), Chicago, IL 60612, USA; Center for Alcohol Research in Epigenetics, Department of Psychiatry, University of Illinois at Chicago, 1601 W. Taylor St., Chicago, IL 60612, USA.
| | - Handojo Kusumo
- Jesse Brown Veterans Affairs Medical Center, 820 South Damen Avenue (M/C 151), Chicago, IL 60612, USA; Center for Alcohol Research in Epigenetics, Department of Psychiatry, University of Illinois at Chicago, 1601 W. Taylor St., Chicago, IL 60612, USA
| | - Rajiv P Sharma
- Jesse Brown Veterans Affairs Medical Center, 820 South Damen Avenue (M/C 151), Chicago, IL 60612, USA; Center for Alcohol Research in Epigenetics, Department of Psychiatry, University of Illinois at Chicago, 1601 W. Taylor St., Chicago, IL 60612, USA
| | - Marina Guizzetti
- Department of Behavioral Neuroscience, Oregon Health & Science University, 3181 SW Sam Jackson Park Road L470, Portland, OR 97239, USA; VA Portland Health Care System, 3710 SW US Veterans Hospital Rd, Portland, OR 97239, USA
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de Andrade RB, Gemelli T, Rojas DB, Kim TDH, Zanatta Â, Schmitz F, Rodrigues AF, Wyse ATS, Wajner M, Dutra-Filho CS, Wannmacher CMD. Evaluation of Oxidative Stress Parameters and Energy Metabolism in Cerebral Cortex of Rats Subjected to Sarcosine Administration. Mol Neurobiol 2016; 54:4496-4506. [PMID: 27356917 DOI: 10.1007/s12035-016-9984-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2016] [Accepted: 06/14/2016] [Indexed: 10/21/2022]
Abstract
Sarcosine is an N-methyl derivative of the amino acid glycine, and its elevation in tissues and physiological fluids of patients with sarcosinemia could reflect a deficient pool size of activated 1-carbon units. Sarcosinemia is a rare inherited metabolic condition associated with mental retardation. In the present study, we investigated the acute effect of sarcosine and/or creatine plus pyruvate on some parameters of oxidative stress and energy metabolism in cerebral cortex homogenates of 21-day-old Wistar rats. Acute administration of sarcosine induced oxidative stress and diminished the activities of adenylate kinase, GAPDH, complex IV, and mitochondrial and cytosolic creatine kinase. On the other hand, succinate dehydrogenase activity was enhanced in cerebral cortex of rats. Moreover, total sulfhydryl content was significantly diminished, while DCFH oxidation, TBARS content, and activities of SOD and GPx were significantly enhanced by acute administration of sarcosine. Co-administration of creatine plus pyruvate was effective in the prevention of alterations provoked by sarcosine administration on the oxidative stress and the enzymes of phosphoryltransfer network. These results indicate that acute administration of sarcosine may stimulate oxidative stress and alter the energy metabolism in cerebral cortex of rats. In case these effects also occur in humans, they may contribute, along with other mechanisms, to the neurological dysfunction of sarcosinemia, and creatine and pyruvate supplementation could be beneficial to the patients.
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Affiliation(s)
- Rodrigo Binkowski de Andrade
- Programa de Pós-Graduação em Ciências Biológicas: Bioquímica, Instituto de Ciências Básicas da Saúde, UFRGS, Rua Ramiro Barcelos 2600, CEP 90.035-003, Porto Alegre, RS, Brazil. .,Departamento de Bioquímica, Instituto de Ciências Básicas da Saúde, Universidade Federal do Rio Grande do Sul, Rua Ramiro Barcelos 2600-Anexo, CEP 90.035-003, Porto Alegre, RS, Brazil. .,Faculdade da Serra Gaúcha, FSG, Rua Rua Os Dezoito do Forte, 2366, CEP 95.020-472, Caxias do Sul, RS, Brazil.
| | - Tanise Gemelli
- Programa de Pós-Graduação em Ciências Biológicas: Bioquímica, Instituto de Ciências Básicas da Saúde, UFRGS, Rua Ramiro Barcelos 2600, CEP 90.035-003, Porto Alegre, RS, Brazil
| | - Denise Bertin Rojas
- Programa de Pós-Graduação em Ciências Biológicas: Bioquímica, Instituto de Ciências Básicas da Saúde, UFRGS, Rua Ramiro Barcelos 2600, CEP 90.035-003, Porto Alegre, RS, Brazil
| | - Tomas Duk Hwa Kim
- Departamento de Bioquímica, Instituto de Ciências Básicas da Saúde, Universidade Federal do Rio Grande do Sul, Rua Ramiro Barcelos 2600-Anexo, CEP 90.035-003, Porto Alegre, RS, Brazil
| | - Ângela Zanatta
- Programa de Pós-Graduação em Ciências Biológicas: Bioquímica, Instituto de Ciências Básicas da Saúde, UFRGS, Rua Ramiro Barcelos 2600, CEP 90.035-003, Porto Alegre, RS, Brazil
| | - Felipe Schmitz
- Programa de Pós-Graduação em Ciências Biológicas: Bioquímica, Instituto de Ciências Básicas da Saúde, UFRGS, Rua Ramiro Barcelos 2600, CEP 90.035-003, Porto Alegre, RS, Brazil
| | - André Felipe Rodrigues
- Programa de Pós-Graduação em Ciências Biológicas: Bioquímica, Instituto de Ciências Básicas da Saúde, UFRGS, Rua Ramiro Barcelos 2600, CEP 90.035-003, Porto Alegre, RS, Brazil
| | - Angela T S Wyse
- Programa de Pós-Graduação em Ciências Biológicas: Bioquímica, Instituto de Ciências Básicas da Saúde, UFRGS, Rua Ramiro Barcelos 2600, CEP 90.035-003, Porto Alegre, RS, Brazil.,Departamento de Bioquímica, Instituto de Ciências Básicas da Saúde, Universidade Federal do Rio Grande do Sul, Rua Ramiro Barcelos 2600-Anexo, CEP 90.035-003, Porto Alegre, RS, Brazil
| | - Moacir Wajner
- Programa de Pós-Graduação em Ciências Biológicas: Bioquímica, Instituto de Ciências Básicas da Saúde, UFRGS, Rua Ramiro Barcelos 2600, CEP 90.035-003, Porto Alegre, RS, Brazil.,Departamento de Bioquímica, Instituto de Ciências Básicas da Saúde, Universidade Federal do Rio Grande do Sul, Rua Ramiro Barcelos 2600-Anexo, CEP 90.035-003, Porto Alegre, RS, Brazil
| | - Carlos Severo Dutra-Filho
- Programa de Pós-Graduação em Ciências Biológicas: Bioquímica, Instituto de Ciências Básicas da Saúde, UFRGS, Rua Ramiro Barcelos 2600, CEP 90.035-003, Porto Alegre, RS, Brazil.,Departamento de Bioquímica, Instituto de Ciências Básicas da Saúde, Universidade Federal do Rio Grande do Sul, Rua Ramiro Barcelos 2600-Anexo, CEP 90.035-003, Porto Alegre, RS, Brazil
| | - Clovis Milton Duval Wannmacher
- Programa de Pós-Graduação em Ciências Biológicas: Bioquímica, Instituto de Ciências Básicas da Saúde, UFRGS, Rua Ramiro Barcelos 2600, CEP 90.035-003, Porto Alegre, RS, Brazil.,Departamento de Bioquímica, Instituto de Ciências Básicas da Saúde, Universidade Federal do Rio Grande do Sul, Rua Ramiro Barcelos 2600-Anexo, CEP 90.035-003, Porto Alegre, RS, Brazil
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Amin FU, Shah SA, Kim MO. Glycine inhibits ethanol-induced oxidative stress, neuroinflammation and apoptotic neurodegeneration in postnatal rat brain. Neurochem Int 2016; 96:1-12. [DOI: 10.1016/j.neuint.2016.04.001] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2015] [Revised: 03/31/2016] [Accepted: 04/01/2016] [Indexed: 12/22/2022]
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8
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Xu G, Cui Y, Wang L, Zhang J, Shen A, Li W, Bao G, Sun Y, Cui Z. Temporospatial expression of fibulin-1 after acute spinal cord injury in rats. J Spinal Cord Med 2015; 38:709-16. [PMID: 24969770 PMCID: PMC4725805 DOI: 10.1179/2045772314y.0000000228] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
OBJECTIVE Fibulin-1 is a matricellular protein that plays important roles in motility inhibition in a variety of cells and blocks the proliferation of cultured neural stem cells. The biological function of fibulin-1 in the spinal cord has not been fully elucidated. METHODS To clarify the expressions and possible functions of fibulin-1 in spinal cord injury (SCI), we performed an acute spinal cord contusion injury model in adult rats. Our work studied the temporospatial expression patterns of fibulin-1. RESULTS Western blot analysis revealed that fibulin-1 levels significantly increased 5 days after spinal cord contusion. Immunohistochemistry confirmed an increased number of fibulin-1 immunopositive cells about 2 mm from the lesion site. Moreover, double immunofluorescence labeling suggested that these changes were especially prominent in neurons and microglia. CONCLUSION These findings suggest that fibulin-1 may be involved in neuronal apoptosis and microglial activation after SCI.
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Affiliation(s)
- Guanhua Xu
- Department of Spine Surgery, The Second Affiliated Hospital of Nantong University, Nantong University, Nantong, China
| | - Ying Cui
- Department of Orthopedics, General Hospital of Nanjing Military Region, Nanjing, China
| | - Lingling Wang
- Department of Spine Surgery, The Second Affiliated Hospital of Nantong University, Nantong University, Nantong, China
| | - Jinlong Zhang
- Department of Spine Surgery, The Second Affiliated Hospital of Nantong University, Nantong University, Nantong, China
| | - Aiguo Shen
- Department of Immunology, Medical College, Nantong University, Nantong, China
| | - Weidong Li
- Department of Spine Surgery, The Second Affiliated Hospital of Nantong University, Nantong University, Nantong, China
| | - Guofeng Bao
- Department of Spine Surgery, The Second Affiliated Hospital of Nantong University, Nantong University, Nantong, China
| | - Yuyu Sun
- Department of Spine Surgery, The Second Affiliated Hospital of Nantong University, Nantong University, Nantong, China
| | - Zhiming Cui
- Department of Spine Surgery, The Second Affiliated Hospital of Nantong University, Nantong University, Nantong, China,Correspondence to: Zhiming Cui, Department of Spine Surgery, The Second Affiliated Hospital of Nantong University, Nantong University, Nantong 226001, China.
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Shah SA, Yoon GH, Kim HO, Kim MO. Vitamin C Neuroprotection Against Dose-Dependent Glutamate-Induced Neurodegeneration in the Postnatal Brain. Neurochem Res 2015; 40:875-84. [DOI: 10.1007/s11064-015-1540-2] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2015] [Revised: 02/01/2015] [Accepted: 02/09/2015] [Indexed: 11/24/2022]
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10
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Lacaille H, Duterte-Boucher D, Liot D, Vaudry H, Naassila M, Vaudry D. Comparison of the deleterious effects of binge drinking-like alcohol exposure in adolescent and adult mice. J Neurochem 2015; 132:629-41. [PMID: 25556946 DOI: 10.1111/jnc.13020] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2014] [Revised: 12/17/2014] [Accepted: 12/17/2014] [Indexed: 12/18/2022]
Abstract
A major cause of alcohol toxicity is the production of reactive oxygen species generated during ethanol metabolism. The aim of this study was to compare the effect of binge drinking-like alcohol exposure on a panel of genes implicated in oxidative mechanisms in adolescent and adult mice. In adolescent animals, alcohol decreased the expression of genes involved in the repair and protection of oxidative DNA damage such as atr, gpx7, or nudt15 and increased the expression of proapoptotic genes such as casp3. In contrast, in the adult brain, genes activated by alcohol were mainly associated with protective mechanisms that prevent cells from oxidative damage. Whatever the age, iterative binge-like episodes provoked the same deleterious effects as those observed after a single binge episode. In adolescent mice, multiple binge ethanol exposure substantially reduced neurogenesis in the dentate gyrus and impaired short-term memory in the novel object and passive avoidance tests. Taken together, our results indicate that alcohol causes deleterious effects in the adolescent brain which are distinct from those observed in adults. These data contribute to explain the greater sensitivity of the adolescent brain to alcohol toxicity. The effects of alcohol exposure were investigated on genes involved in oxidative mechanisms. In adolescent animals, alcohol decreased the expression of genes involved in DNA repair, a potential cause of the observed decrease of neurogenesis. In contrast, in the adult brain, alcohol increased the expression of genes associated with antioxidant mechanisms. Apoptosis was increase in all groups and converged with other biochemical alterations to enhance short-term memory impairment in the adolescent brain. These data contribute to explain the greater sensitivity of the adolescent brain to alcohol toxicity.
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Affiliation(s)
- Hélène Lacaille
- INSERM U982, Neurotrophic factors and neuronal differentiation team, Mont-Saint-Aignan, France; International Associated Laboratory Samuel de Champlain, Mont-Saint-Aignan, France
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Thymoquinone and Vitamin C Attenuates Pentylenetetrazole-Induced Seizures Via Activation of GABAB1 Receptor in Adult Rats Cortex and Hippocampus. Neuromolecular Med 2014; 17:35-46. [DOI: 10.1007/s12017-014-8337-3] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2014] [Accepted: 11/13/2014] [Indexed: 12/11/2022]
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12
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Matrix metalloproteinase-1 (MMP-1) expression in rat spinal cord injury model. Cell Mol Neurobiol 2014; 34:1151-63. [PMID: 25073870 DOI: 10.1007/s10571-014-0090-5] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2014] [Accepted: 07/15/2014] [Indexed: 12/16/2022]
Abstract
Matrix metalloproteinase-1 (MMP-1), a member of the matrix metalloproteinases family, plays an integral role in extracellular matrix degradation and has been reportedly involved in the regulation of the brain or spinal cord traumatic neurovascular remodeling. Although the critical involvement of MMP-1 in the metastasis of tumors has been extensively documented, the role of MMP-1 in the pathology of neurological diseases remains largely elusive. In the present study, we established an adult rat spinal cord injury (SCI) model and investigated a potential role of MMP-1 in the pathological process of SCI. Using Western blot analysis, we identified notable expression change of MMP-1 after SCI. Immunohistochemistry showed that MMP-1 was distributed widely in rat spinal cord. Double immunofluorescence staining revealed that MMP-1 immunoreactivity was predominantly increased in neurons and astrocytes following SCI. Moreover, after injury, colocalization of MMP-1/active caspase-3 in neurons (NeuN-positive), and colocalization of MMP-1/PCNA in astrocytes (GFAP-positive) were clearly observed. We also examined the protein expression of PCNA, active caspase-3, Bcl-2, and Bax and found that the expression of the proteins was closely correlated with that of MMP-1. Taken together, our findings indicate that MMP-1 might play an important role in the regulation of neuronal apoptosis and astrocyte proliferation after SCI.
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Goldowitz D, Lussier AA, Boyle JK, Wong K, Lattimer SL, Dubose C, Lu L, Kobor MS, Hamre KM. Molecular pathways underpinning ethanol-induced neurodegeneration. Front Genet 2014; 5:203. [PMID: 25076964 PMCID: PMC4097813 DOI: 10.3389/fgene.2014.00203] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2014] [Accepted: 06/17/2014] [Indexed: 11/29/2022] Open
Abstract
While genetics impacts the type and severity of damage following developmental ethanol exposure, little is currently known about the molecular pathways that mediate these effects. Traditionally, research in this area has used a candidate gene approach and evaluated effects on a gene-by-gene basis. Recent studies, however, have begun to use unbiased approaches and genetic reference populations to evaluate the roles of genotype and epigenetic modifications in phenotypic changes following developmental ethanol exposure, similar to studies that evaluated numerous alcohol-related phenotypes in adults. Here, we present work assessing the role of genetics and chromatin-based alterations in mediating ethanol-induced apoptosis in the developing nervous system. Utilizing the expanded family of BXD recombinant inbred mice, animals were exposed to ethanol at postnatal day 7 via subcutaneous injection (5.0 g/kg in 2 doses). Tissue was collected 7 h after the initial ethanol treatment and analyzed by activated caspase-3 immunostaining to visualize dying cells in the cerebral cortex and hippocampus. In parallel, the levels of two histone modifications relevant to apoptosis, γH2AX and H3K14 acetylation, were examined in the cerebral cortex using protein blot analysis. Activated caspase-3 staining identified marked differences in cell death across brain regions between different mouse strains. Genetic analysis of ethanol susceptibility in the hippocampus led to the identification of a quantitative trait locus on chromosome 12, which mediates, at least in part, strain-specific differential vulnerability to ethanol-induced apoptosis. Furthermore, analysis of chromatin modifications in the cerebral cortex revealed a global increase in γH2AX levels following ethanol exposure, but did not show any change in H3K14 acetylation levels. Together, these findings provide new insights into the molecular mechanisms and genetic contributions underlying ethanol-induced neurodegeneration.
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Affiliation(s)
- Dan Goldowitz
- Centre for Molecular Medicine and Therapeutics, Child and Family Research Institute - Department of Medical Genetics, University of British Columbia Vancouver, BC, Canada
| | - Alexandre A Lussier
- Centre for Molecular Medicine and Therapeutics, Child and Family Research Institute - Department of Medical Genetics, University of British Columbia Vancouver, BC, Canada
| | - Julia K Boyle
- Centre for Molecular Medicine and Therapeutics, Child and Family Research Institute - Department of Medical Genetics, University of British Columbia Vancouver, BC, Canada
| | - Kaelan Wong
- Centre for Molecular Medicine and Therapeutics, Child and Family Research Institute - Department of Medical Genetics, University of British Columbia Vancouver, BC, Canada
| | - Scott L Lattimer
- Department of Anatomy and Neurobiology, University of Tennessee Health Science Center Memphis, TN, USA
| | - Candis Dubose
- Department of Anatomy and Neurobiology, University of Tennessee Health Science Center Memphis, TN, USA
| | - Lu Lu
- Department of Anatomy and Neurobiology, University of Tennessee Health Science Center Memphis, TN, USA
| | - Michael S Kobor
- Centre for Molecular Medicine and Therapeutics, Child and Family Research Institute - Department of Medical Genetics, University of British Columbia Vancouver, BC, Canada ; Human Early Learning Partnership, School of Population and Public Health, University of British Columbia Vancouver, BC, Canada
| | - Kristin M Hamre
- Department of Anatomy and Neurobiology, University of Tennessee Health Science Center Memphis, TN, USA
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de Andrade RB, Gemelli T, Rojas DB, Bonorino NF, Costa BML, Funchal C, Dutra-Filho CS, Wannmacher CMD. Creatine and Pyruvate Prevent the Alterations Caused by Tyrosine on Parameters of Oxidative Stress and Enzyme Activities of Phosphoryltransfer Network in Cerebral Cortex of Wistar Rats. Mol Neurobiol 2014; 51:1184-94. [DOI: 10.1007/s12035-014-8791-9] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2014] [Accepted: 06/15/2014] [Indexed: 12/01/2022]
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15
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Badshah H, Kim TH, Kim MJ, Ahmad A, Ali T, Yoon GH, Naseer MI, Kim MO. Apomorphine attenuates ethanol-induced neurodegeneration in the adult rat cortex. Neurochem Int 2014; 74:8-15. [PMID: 24795108 DOI: 10.1016/j.neuint.2014.04.009] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2013] [Revised: 03/26/2014] [Accepted: 04/11/2014] [Indexed: 02/07/2023]
Abstract
Apomorphine, therapeutically used for Parkinson's disease, is a dopamine D1/D2 receptor agonist that has been determined to be a potent antioxidant and to prevent the reaction of free radicals in the brain. Alcohol is a neurotoxic agent that induces neurodegeneration possibly through the generation of free radicals. In this study, we investigated the antioxidant potential of apomorphine upon ethanol-induced neurodegeneration in the cortex of adult rats. Ethanol-induced apoptotic neurodegeneration was measured via the suppression of Bcl-2, the induction of Bax, the release of cytochrome C and the activation of caspase-9 and caspase-3. Moreover, ethanol-induced elevated levels of cleaved PARP-1 indicated exaggerated neuronal DNA damage. Our results demonstrated the neuroprotective effect of apomorphine by reversing the ethanol-induced apoptotic trend as observed by the increased expression of Bcl-2, down regulation of Bax, inhibition of mitochondrial cytochrome C release and inhibition of activated caspase-9 and caspase-3. Moreover, apomorphine treatment further decreased the expression of cleaved PARP-1 to reveal a reduction in ethanol-induced neuronal damage. Immunohistochemical analysis and Nissl staining also revealed neuroprotective effect of apomorphine after ethanol-induced neuronal cell death. In this study, our results indicated that apomorphine at doses of 1 and 5mg/kg has neuroprotective effects for ethanol-induced neuronal damage. Finally, we can conclude that apomorphine has effective therapeutic potential to protect the brain against ethanol-induced neurotoxicity.
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Affiliation(s)
- Haroon Badshah
- Department of Biology, College of Natural Sciences (RINS) and Applied Life Science (BK21 plus), Gyeongsang National University, Jinju 660-701, Republic of Korea
| | - Tae Hyun Kim
- Department of Biology, College of Natural Sciences (RINS) and Applied Life Science (BK21 plus), Gyeongsang National University, Jinju 660-701, Republic of Korea
| | - Min Ju Kim
- Department of Biology, College of Natural Sciences (RINS) and Applied Life Science (BK21 plus), Gyeongsang National University, Jinju 660-701, Republic of Korea
| | - Ashfaq Ahmad
- Department of Biology, College of Natural Sciences (RINS) and Applied Life Science (BK21 plus), Gyeongsang National University, Jinju 660-701, Republic of Korea
| | - Tahir Ali
- Department of Biology, College of Natural Sciences (RINS) and Applied Life Science (BK21 plus), Gyeongsang National University, Jinju 660-701, Republic of Korea
| | - Gwang Ho Yoon
- Department of Biology, College of Natural Sciences (RINS) and Applied Life Science (BK21 plus), Gyeongsang National University, Jinju 660-701, Republic of Korea
| | - Muhammad Imran Naseer
- Center of Excellence in Genomic Medicine and Research (CEGMR), King Abdulaziz University, Jeddah 21589, Saudi Arabia
| | - Myeong Ok Kim
- Department of Biology, College of Natural Sciences (RINS) and Applied Life Science (BK21 plus), Gyeongsang National University, Jinju 660-701, Republic of Korea.
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16
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Wang Y, Wang H, Tao Y, Zhang S, Wang J, Feng X. Necroptosis inhibitor necrostatin-1 promotes cell protection and physiological function in traumatic spinal cord injury. Neuroscience 2014; 266:91-101. [PMID: 24561219 DOI: 10.1016/j.neuroscience.2014.02.007] [Citation(s) in RCA: 92] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2013] [Revised: 01/30/2014] [Accepted: 02/06/2014] [Indexed: 11/29/2022]
Abstract
Spinal cord injury (SCI) is a common and serious trauma which lacks efficient treatment. Inhibition of cell death in the trauma area is important for spinal cord protection during this process. In this study, necroptosis inhibitor necrostatin-1 (Nec-1) was used to treat SCI rats, to investigate the role of Nec-1 in the recovery of SCI. Nec-1 was found to reduce lesions, cytokines and reactive oxygen species (ROS), improve pathological conditions and blood supply in the spinal cord trauma area. Further study indicated that Nec-1 could inhibit necroptosis by inhibiting RIP1/3-MLKL recruitment and inhibit apoptosis by inhibiting Caspase 3 and Bax while activating Bcl-2. Ethological performance of SCI rats confirmed improvement and protection of physiological function by Nec-1. Nec-1 as a potential treatment for SCI warrants further study. To our knowledge, this is the first study on the role of Nec-1 in the treatment of traumatic SCI. Our research also found inhibition effects of Nec-1 on apoptosis, not only necroptosis - as reported by most publications.
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Affiliation(s)
- Y Wang
- Department of Orthopedics, Clinical Medical College of Yangzhou University, Subei People's Hospital of Jiangsu Province, Yangzhou, Jiangsu 225001, China
| | - H Wang
- Department of Orthopedics, Clinical Medical College of Yangzhou University, Subei People's Hospital of Jiangsu Province, Yangzhou, Jiangsu 225001, China
| | - Y Tao
- Department of Orthopedics, Clinical Medical College of Yangzhou University, Subei People's Hospital of Jiangsu Province, Yangzhou, Jiangsu 225001, China
| | - S Zhang
- Department of Orthopedics, Clinical Medical College of Yangzhou University, Subei People's Hospital of Jiangsu Province, Yangzhou, Jiangsu 225001, China
| | - J Wang
- Department of Orthopedics, Clinical Medical College of Yangzhou University, Subei People's Hospital of Jiangsu Province, Yangzhou, Jiangsu 225001, China.
| | - X Feng
- Department of Orthopedics, Clinical Medical College of Yangzhou University, Subei People's Hospital of Jiangsu Province, Yangzhou, Jiangsu 225001, China.
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Ullah N, Naseer MI, Ullah I, Kim TH, Lee HY, Kim MO. Neuroprotective profile of pyruvate against ethanol-induced neurodegeneration in developing mice brain. Neurol Sci 2013; 34:2137-43. [PMID: 23494720 DOI: 10.1007/s10072-013-1350-8] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2012] [Accepted: 02/28/2013] [Indexed: 11/26/2022]
Abstract
Exposure to ethanol during developmental stages leads to several types of neurological disorders. Apoptotic neurodegeneration due to ethanol exposure is a main feature in alcoholism. Exposure of developing animals to alcohol induces apoptotic neuronal death and causes fetal alcohol syndrome. In the present study, we observed the possible protective effect of pyruvate against ethanol-induced neurodegeneration. Exposure of developing mice to ethanol (2.5 g/kg) induces apoptotic neurodegeneration and widespread neuronal cell death in the cortex and thalamus. Co-treatment of pyruvate (500 mg/kg) protects neuronal cell against ethanol by the reduced expression of caspase-3 in these brain regions. Immunohistochemical analysis and TUNNEL at 24 h showed that apoptotic cell death induced by ethanol in the cortex and thalamus is reduced by pyruvate. Histomorphological analysis at 24 h with cresyl violet staining also proved that pyruvate reduced the number of neuronal cell loss in the cortex and thalamus. The results showed that ethanol increased the expression of caspase-3 and thus induced apoptotic neurodegeneration in the developing mice cortex and thalamus, while co-treatment of pyruvate inhibits the induction of caspase-3 and reduced the cell death in these brain regions. These findings, therefore, showed that treatment of pyruvate inhibits ethanol-induced neuronal cell loss in the postnatal seven (P7) developing mice brain and may appear as a safe neuroprotectant for treating neurodegenerative disorders in newborns and infants.
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Affiliation(s)
- Najeeb Ullah
- Division of Life Science, College of Natural Sciences (RINS) and Applied Life Science, Gyeongsang National University, Chinju, 660-701, Republic of Korea
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18
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Upregulated expression of NF-YC contributes to neuronal apoptosis via proapoptotic protein bim in rats' brain hippocampus following middle cerebral artery occlusion (MCAO). J Mol Neurosci 2013; 52:552-65. [PMID: 24014123 DOI: 10.1007/s12031-013-0111-8] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2013] [Accepted: 08/27/2013] [Indexed: 01/10/2023]
Abstract
Cerebral ischemia represents a severe brain injury that could lead to significant neuronal damage and death. In this study, we performed a middle cerebral artery occlusion (MCAO) in adult rats and observed that a subunit of nuclear factor-Y (NF-Y) transcriptional factor, NF-YC, was accumulated in rat hippocampal CA1 neurons. Immunochemistrical and immunofluorescent analysis revealed that NF-YC was primarily expressed in the nucleus of neurons. Meanwhile, we found that the changes of bim, one of the target genes of NF-Y, were consistent with the expression of NF-YC and Bim was mainly located in the NF-YC positive cells. Moreover, there was a concomitant upregulation of active caspase-3 and TUNEL positive cells. Taken together, these results suggested that the upregulation of NF-YC might play an important role in the pathophysiology via proapoptotic protein Bim after MCAO and further research is needed to have a better understanding of its function and mechanism.
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Ali Shah S, Ullah I, Lee HY, Kim MO. Anthocyanins protect against ethanol-induced neuronal apoptosis via GABAB1 receptors intracellular signaling in prenatal rat hippocampal neurons. Mol Neurobiol 2013; 48:257-69. [PMID: 23645118 DOI: 10.1007/s12035-013-8458-y] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2012] [Accepted: 04/09/2013] [Indexed: 10/26/2022]
Abstract
Here, we investigated the possible involvement of gamma-aminobutyric acid B1 receptor (GABAB1R) in mediating the protective effects of black soybean anthocyanins against ethanol-induced apoptosis in prenatal hippocampal neurons because GABARs are known to play an important role in the development of central nervous system. Treatments were performed on primary cultures of prenatal rat hippocampal neurons transfected with or without GABAB1R small interfering RNA (siRNA). The results showed that, when ethanol treatment was followed by anthocyanins treatment, cellular levels of proapoptotic proteins such as Bax, activated caspase-3, and cleaved poly (ADP-ribose) polymerase 1 (PARP-1) were decreased, and the cellular level of the antiapoptotic protein Bcl-2 was increased compared to treatment with ethanol alone. Furthermore, the effects of ethanol on cellular levels of GABAB1R and its downstream signaling molecules such as protein kinase A, calcium/calmodulin-dependent protein kinase II (CaMKII), and phosphorylated cAMP response element binding protein were diminished or reversed by anthocyanins treatment. The ability of anthocyanins to reverse the effects of ethanol on cellular levels of Bax, Bcl-2, active caspase-3, cleaved PARP-1, GABAB1R, and CaMKII were abrogated in cells transfected with GABAB1R siRNA. In a GABAB1R-dependent manner, anthocyanins also inhibited the ability of ethanol to elevate intracellular free Ca(2+) level and increase the proportion of cells with low mitochondrial membrane potential in the population. Cell apoptosis assay and morphological studies also confirmed the neuroprotective effect of anthocyanins against ethanol via GABAB1R. Our data suggest that GABAB1R plays an important role in the neuroprotective effects of anthocyanins against ethanol.
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Affiliation(s)
- Shahid Ali Shah
- Department of Biology, Division of Applied Life Science, College of Natural Sciences, Gyeongsang National University, Jinju, 660-701, Republic of Korea
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de Franceschi ID, Rieger E, Vargas AP, Rojas DB, Campos AG, Rech VC, Feksa LR, Wannmacher CMD. Effect of Leucine Administration to Female Rats During Pregnancy and Lactation on Oxidative Stress and Enzymes Activities of Phosphoryltransfer Network in Cerebral Cortex and Hippocampus of the Offspring. Neurochem Res 2013; 38:632-43. [DOI: 10.1007/s11064-012-0961-4] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2012] [Revised: 12/18/2012] [Accepted: 12/21/2012] [Indexed: 12/18/2022]
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Klintsova AY, Hamilton GF, Boschen KE. Long-term consequences of developmental alcohol exposure on brain structure and function: therapeutic benefits of physical activity. Brain Sci 2012; 3:1-38. [PMID: 24961305 PMCID: PMC4061829 DOI: 10.3390/brainsci3010001] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2012] [Revised: 12/01/2012] [Accepted: 12/10/2012] [Indexed: 02/07/2023] Open
Abstract
Developmental alcohol exposure both early in life and during adolescence can have a devastating impact on normal brain structure and functioning, leading to behavioral and cognitive impairments that persist throughout the lifespan. This review discusses human work as well as animal models used to investigate the effect of alcohol exposure at various time points during development, as well as specific behavioral and neuroanatomical deficits caused by alcohol exposure. Further, cellular and molecular mediators contributing to these alcohol-induced changes are examined, such as neurotrophic factors and apoptotic markers. Next, this review seeks to support the use of aerobic exercise as a potential therapeutic intervention for alcohol-related impairments. To date, few interventions, behavioral or pharmacological, have been proven effective in mitigating some alcohol-related deficits. Exercise is a simple therapy that can be used across species and also across socioeconomic status. It has a profoundly positive influence on many measures of learning and neuroplasticity; in particular, those measures damaged by alcohol exposure. This review discusses current evidence that exercise may mitigate damage caused by developmental alcohol exposure and is a promising therapeutic target for future research and intervention strategies.
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Affiliation(s)
- Anna Y Klintsova
- Department of Psychology, University of Delaware, Newark, DE 19716, USA.
| | - Gillian F Hamilton
- Department of Psychology, University of Delaware, Newark, DE 19716, USA.
| | - Karen E Boschen
- Department of Psychology, University of Delaware, Newark, DE 19716, USA.
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