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Yakoub KM, Lazzarino G, Amorini AM, Caruso G, Scazzone C, Ciaccio M, Tavazzi B, Lazzarino G, Belli A, Di Pietro V. Fructose-1,6-Bisphosphate Protects Hippocampal Rat Slices from NMDA Excitotoxicity. Int J Mol Sci 2019; 20:ijms20092239. [PMID: 31067671 PMCID: PMC6540300 DOI: 10.3390/ijms20092239] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2019] [Revised: 04/29/2019] [Accepted: 05/04/2019] [Indexed: 12/18/2022] Open
Abstract
Effects of fructose 1,6-bisphosphate (F-1,6-P2) towards N-methyl-d-aspartate NMDA excitotoxicity were evaluated in rat organotypic hippocampal brain slice cultures (OHSC) challenged for 3 h with 30 μM NMDA, followed by incubations (24, 48, and 72 h) without (controls) and with F-1,6-P2 (0.5, 1 or 1.5 mM). At each time, cell necrosis was determined by measuring LDH in the medium. Energy metabolism was evaluated by measuring ATP, GTP, ADP, AMP, and ATP catabolites (nucleosides and oxypurines) in deproteinized OHSC extracts. Gene expressions of phosphofructokinase, aldolase, and glyceraldehyde-3-phosphate dehydrogenase were also measured. F-1,6-P2 dose-dependently decreased NMDA excitotoxicity, abolishing cell necrosis at the highest concentration tested (1.5 mM). Additionally, F-1,6-P2 attenuated cell energy imbalance caused by NMDA, ameliorating the mitochondrial phosphorylating capacity (increase in ATP/ADP ratio) Metabolism normalization occurred when using 1.5 mM F-1,6-P2. Remarkable increase in expressions of phosphofructokinase, aldolase and glyceraldehyde-3-phosphate dehydrogenase (up to 25 times over the values of controls) was also observed. Since this phenomenon was recorded even in OHSC treated with F-1,6-P2 with no prior challenge with NMDA, it is highly conceivable that F-1,6-P2 can enter into intact cerebral cells producing significant benefits on energy metabolism. These effects are possibly mediated by changes occurring at the gene level, thus opening new perspectives for F-1,6-P2 application as a useful adjuvant to rescue mitochondrial metabolism of cerebral cells under stressing conditions.
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Affiliation(s)
- Kamal M Yakoub
- Neurotrauma and Ophthalmology Research Group, School of Clinical and Experimental Medicine, College of Medical and Dental Sciences, University of Birmingham, Edgbaston, Birmingham B15 2TT, UK.
- National Institute for Health Research Surgical Reconstruction and Microbiology Research Centre, Queen Elizabeth Hospital, Edgbaston, Birmingham B15 2TH, UK.
| | - Giacomo Lazzarino
- Institute of Biochemistry and Clinical Biochemistry, Catholic University of Rome, Largo F. Vito 1, 00168 Rome, Italy.
- Fondazione Policlinico Universitario A. Gemelli IRCCS, Largo A. Gemelli 8, 00168 Rome, Italy.
| | - Angela M Amorini
- Department of Biomedical and Biotechnological Sciences, Division of Medical Biochemistry, University of Catania, Viale A. Doria 6, 95125 Catania, Italy.
| | - Giuseppe Caruso
- Oasi Research Institute⁻IRCCS, Via Conte Ruggero 73, 94018 Troina (EN), Italy.
| | - Concetta Scazzone
- Institute of Clinical Biochemistry, Clinical Molecular Medicine and Laboratory Medicine, Department of Biomedicine, Neurosciences and Advanced Diagnostics, Via del Vespro 129, 90127 Palermo, Italy.
| | - Marcello Ciaccio
- Institute of Clinical Biochemistry, Clinical Molecular Medicine and Laboratory Medicine, Department of Biomedicine, Neurosciences and Advanced Diagnostics, Via del Vespro 129, 90127 Palermo, Italy.
| | - Barbara Tavazzi
- Institute of Biochemistry and Clinical Biochemistry, Catholic University of Rome, Largo F. Vito 1, 00168 Rome, Italy.
- Fondazione Policlinico Universitario A. Gemelli IRCCS, Largo A. Gemelli 8, 00168 Rome, Italy.
| | - Giuseppe Lazzarino
- Department of Biomedical and Biotechnological Sciences, Division of Medical Biochemistry, University of Catania, Viale A. Doria 6, 95125 Catania, Italy.
| | - Antonio Belli
- Neurotrauma and Ophthalmology Research Group, School of Clinical and Experimental Medicine, College of Medical and Dental Sciences, University of Birmingham, Edgbaston, Birmingham B15 2TT, UK.
- National Institute for Health Research Surgical Reconstruction and Microbiology Research Centre, Queen Elizabeth Hospital, Edgbaston, Birmingham B15 2TH, UK.
| | - Valentina Di Pietro
- Neurotrauma and Ophthalmology Research Group, School of Clinical and Experimental Medicine, College of Medical and Dental Sciences, University of Birmingham, Edgbaston, Birmingham B15 2TT, UK.
- National Institute for Health Research Surgical Reconstruction and Microbiology Research Centre, Queen Elizabeth Hospital, Edgbaston, Birmingham B15 2TH, UK.
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van Woerkom AE. A fully integrated new paradigm for lithium's mode of action - lithium utilizes latent cellular fail-safe mechanisms. Neuropsychiatr Dis Treat 2017; 13:275-302. [PMID: 28203080 PMCID: PMC5293501 DOI: 10.2147/ndt.s123612] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
Abstract
It is proposed that lithium's therapeutic effects occur indirectly by augmenting a cascade of protective "fail-safe" pathways pre-configured to activate in response to a dangerous low cell [Mg++] situation, eg, posttraumatic brain injury, alongside relative cell adenosine triphosphate depletion. Lithium activates cell protection, as it neatly mimics a lowered intracellular [Mg++] level.
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Affiliation(s)
- Arthur Ernst van Woerkom
- South Birmingham and Solihull Mental Health NHS Foundation Trust, Longbridge CMHT, Rubery, Birmingham, UK
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13C NMR metabolomic evaluation of immediate and delayed mild hypothermia in cerebrocortical slices after oxygen-glucose deprivation. Anesthesiology 2013; 119:1120-36. [PMID: 23748856 DOI: 10.1097/aln.0b013e31829c2d90] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
BACKGROUND Mild brain hypothermia (32°-34°C) after human neonatal asphyxia improves neurodevelopmental outcomes. Astrocytes but not neurons have pyruvate carboxylase and an acetate uptake transporter. C nuclear magnetic resonance spectroscopy of rodent brain extracts after administering [1-C]glucose and [1,2-C]acetate can distinguish metabolic differences between glia and neurons, and tricarboxylic acid cycle entry via pyruvate dehydrogenase and pyruvate carboxylase. METHODS Neonatal rat cerebrocortical slices receiving a C-acetate/glucose mixture underwent a 45-min asphyxia simulation via oxygen-glucose-deprivation followed by 6 h of recovery. Protocols in three groups of N=3 experiments were identical except for temperature management. The three temperature groups were: normothermia (37°C), hypothermia (32°C for 3.75 h beginning at oxygen--glucose deprivation start), and delayed hypothermia (32°C for 3.75 h, beginning 15 min after oxygen-glucose deprivation start). Multivariate analysis of nuclear magnetic resonance metabolite quantifications included principal component analyses and the L1-penalized regularized regression algorithm known as the least absolute shrinkage and selection operator. RESULTS The most significant metabolite difference (P<0.0056) was [2-C]glutamine's higher final/control ratio for the hypothermia group (1.75±0.12) compared with ratios for the delayed (1.12±0.12) and normothermia group (0.94±0.06), implying a higher pyruvate carboxylase/pyruvate dehydrogenase ratio for glutamine formation. Least Absolute Shrinkage and Selection Operator found the most important metabolites associated with adenosine triphosphate preservation: [3,4-C]glutamate-produced via pyruvate dehydrogenase entry, [2-C]taurine-an important osmolyte and antioxidant, and phosphocreatine. Final principal component analyses scores plots suggested separate cluster formation for the hypothermia group, but with insufficient data for statistical significance. CONCLUSIONS Starting mild hypothermia simultaneously with oxygen-glucose deprivation, compared with delayed starting or no hypothermia, has higher pyruvate carboxylase throughput, suggesting that better glial integrity is one important neuroprotection mechanism of earlier hypothermia.
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de Mesquita FC, Bitencourt S, Caberlon E, da Silva GV, Basso BS, Schmid J, Ferreira GA, de Oliveira FDS, de Oliveira JR. Fructose-1,6-bisphosphate induces phenotypic reversion of activated hepatic stellate cell. Eur J Pharmacol 2013; 720:320-5. [DOI: 10.1016/j.ejphar.2013.09.067] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2013] [Revised: 09/13/2013] [Accepted: 09/29/2013] [Indexed: 12/27/2022]
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1H nuclear magnetic resonance brain metabolomics in neonatal mice after hypoxia-ischemia distinguished normothermic recovery from mild hypothermia recoveries. Pediatr Res 2013; 74:170-9. [PMID: 23708689 PMCID: PMC3734529 DOI: 10.1038/pr.2013.88] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/17/2012] [Accepted: 04/01/2013] [Indexed: 12/20/2022]
Abstract
BACKGROUND Mild brain hypothermia (31-34 °C) after neonatal hypoxia-ischemia (HI) improves neurodevelopmental outcomes in human and animal neonates. Using an asphyxia model with neonatal mice treated with mild hypothermia after HI, we investigated whether (1)H nuclear magnetic resonance (NMR) metabolomics of brain extracts could suggest biomarkers and distinguish different treatments and outcome groups. METHODS At postnatal day 7 (P7), CD1 mice underwent right carotid artery occlusion, 30 min of HI (8% oxygen), and 3.5 h of either hypothermia (31 °C) or normothermia (37 °C). Whole brains were frozen immediately after HI, immediately after 3.5 h of hypothermia or normothermia treatments, and 24 h later. Perchloric acid extractions of 36 metabolites were quantified by 900 MHz (1)H NMR spectroscopy. Multivariate analyses included principal component analyses (PCA) and a novel regression algorithm. Histological injury was quantified after HI at 5 d. RESULTS PCA scores plots separated normothermia/HI animals from hypothermia/HI and control animals, but more data are required for multivariate models to be predictive. Loadings plots identified 11 significant metabolites, whereas the regression algorithm identified 6. Histological injury scores were significantly reduced by hypothermia. CONCLUSION Different treatment and outcome groups are identifiable by (1)H NMR metabolomics in a neonatal mouse model of mild hypothermia treatment of HI.
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Seok SM, Kim JM, Park TY, Baik EJ, Lee SH. Fructose-1,6-bisphosphate ameliorates lipopolysaccharide-induced dysfunction of blood-brain barrier. Arch Pharm Res 2013; 36:1149-59. [PMID: 23604722 DOI: 10.1007/s12272-013-0129-z] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2013] [Accepted: 04/12/2013] [Indexed: 11/26/2022]
Abstract
Fructose-1,6-bisphosphate (FBP), a glycolytic intermediate, has neuroprotective effects in various brain injury models. However, its effects on blood-brain barrier (BBB) are largely unknown. In this study, we investigated the effects of FBP on lipopolysaccharide (LPS)-induced BBB dysfunction in in vitro BBB model comprising co-culture of mouse brain endothelial cell line, bEnd.3 and mouse primary astrocyte and explored its action mechanism therein involved. LPS induced the impairment of endothelial permeability and transendothelial electrical resistance (TEER). The functional changes were confirmed by alterations in immunostaining for junctional proteins occludin, ZO-1 and VE-cadherin, such as the loss of cortical staining pattern and appearance of intercellular gaps in endothelial cells. Co-administration of FBP alleviated the deleterious effects of LPS on BBB permeability and TEER in a dose dependent manner. And also FBP inhibited the LPS-induced changes in the distribution of endothelial junctional proteins, resulting in the better preservation of monolayer integrity. FBP suppressed the production of reactive oxygen species (ROS) but did not affect cyclooxygenase-2 expression and prostaglandin E₂ production in endothelial cells stimulated with LPS. Taken together, these data suggest that FBP could ameliorate LPS-induced BBB dysfunction through the maintenance of junctional integrity, which might be mediated by downregulation of ROS production.
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Affiliation(s)
- Sun Mi Seok
- Department of Physiology, Ajou University School of Medicine, #5, Wonchon-dong, Suwon, 443-749, Republic of Korea
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Kim YC, Park TY, Baik E, Lee SH. Fructose-1,6-bisphosphate attenuates induction of nitric oxide synthase in microglia stimulated with lipopolysaccharide. Life Sci 2011; 90:365-72. [PMID: 22227475 DOI: 10.1016/j.lfs.2011.12.011] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2011] [Revised: 11/21/2011] [Accepted: 12/13/2011] [Indexed: 11/28/2022]
Abstract
AIMS Fructose-1,6-bisphosphate (FBP) is a glycolytic intermediate with neuroprotective action in various brain injury models. However, the mechanism underlying the neuroprotection of FBP has not been fully defined. In this study, we investigated whether FBP inhibits endotoxin-induced nitric oxide (NO) production and inducible nitric oxide synthase (iNOS) expression in microglial cells and explored the possible mechanisms of the effects of FBP. MAIN METHODS Murine microglial cell line BV2 and primary cultured murine microglial cells were used. NO production and iNOS expression were determined by Griess reaction, RT-PCR and Western blot. Luciferase assay using iNOS promoter-luciferase (iNOS-Luc) construct was adopted for measuring transcriptional activity. KEY FINDINGS FBP dose-dependently suppressed lipopolysaccharide (LPS)-induced NO production, along with reducing the expression of iNOS at both the protein and mRNA level in primary cultured murine microglia and BV2 cells. FBP significantly inhibited iNOS promoter activity but stabilized iNOS mRNA. Among transcription factors known to be related to iNOS expression, activator protein (AP-1) activation was significantly blocked by FBP. FBP suppressed LPS-induced phosphorylation of three MAPK subtypes-p38 MAPK, JNK and ERK. FBP inhibited LPS-induced production of reactive oxygen species (ROS) and decreased intracellular GSSG/GSH ratio. SIGNIFICANCE Our findings suggest that FBP attenuates the LPS-induced iNOS expression through inhibition of JNK and p38 MAPK, which might be related to ROS downregulation.
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Affiliation(s)
- Young-Chae Kim
- Department of Physiology, School of Medicine, Ajou University, Suwon, Republic of Korea
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Outcome-related metabolomic patterns from 1H/31P NMR after mild hypothermia treatments of oxygen-glucose deprivation in a neonatal brain slice model of asphyxia. J Cereb Blood Flow Metab 2011; 31:547-59. [PMID: 20717124 PMCID: PMC3010526 DOI: 10.1038/jcbfm.2010.125] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Human clinical trials using 72 hours of mild hypothermia (32°C-34°C) after neonatal asphyxia have found substantially improved neurologic outcomes. As temperature changes differently modulate numerous metabolite fluxes and concentrations, we hypothesized that (1)H/(31)P nuclear magnetic resonance (NMR) spectroscopy of intracellular metabolites can distinguish different insults, treatments, and recovery stages. Three groups of superfused neonatal rat brain slices underwent 45 minutes oxygen-glucose deprivation (OGD) and then were: treated for 3 hours with mild hypothermia (32°C) that began with OGD, or similarly treated with hypothermia after a 15-minute delay, or not treated (normothermic control group, 37°C). Hypothermia was followed by 3 hours of normothermic recovery. Slices collected at different predetermined times were processed, respectively, for 14.1 Tesla NMR analysis, enzyme-linked immunosorbent assay (ELISA) cell-death quantification, and superoxide production. Forty-nine NMR-observable metabolites underwent a multivariate analysis. Separated clustering in scores plots was found for treatment and outcome groups. Final ATP (adenosine triphosphate) levels, severely decreased at normothermia, were restored equally by immediate and delayed hypothermia. Cell death was decreased by immediate hypothermia, but was equally substantially greater with normothermia and delayed hypothermia. Potentially important biomarkers in the (1)H spectra included PCr-(1)H (phosphocreatine in the (1)H spectrum), ATP-(1)H (adenosine triphosphate in the (1)H spectrum), and ADP-(1)H (adenosine diphosphate in the (1)H spectrum). The findings suggest a potential role for metabolomic monitoring during therapeutic hypothermia.
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