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Kawamura M, Ruskin DN, Masino SA. Adenosine A 1 receptor-mediated protection of mouse hippocampal synaptic transmission against oxygen and/or glucose deprivation: a comparative study. J Neurophysiol 2019; 122:721-728. [PMID: 31242045 DOI: 10.1152/jn.00813.2018] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
Adenosine receptors are widely expressed in the brain, and adenosine is a key bioactive substance for neuroprotection. In this article, we clarify systematically the role of adenosine A1 receptors during a range of timescales and conditions when a significant amount of adenosine is released. Using acute hippocampal slices obtained from mice that were wild type or null mutant for the adenosine A1 receptor, we quantified and characterized the impact of varying durations of experimental ischemia, hypoxia, and hypoglycemia on synaptic transmission in the CA1 subregion. In normal tissue, these three stressors rapidly and markedly reduced synaptic transmission, and only treatment of sufficient duration led to incomplete recovery. In contrast, inactivation of adenosine A1 receptors delayed and/or lessened the reduction in synaptic transmission during all three stressors and reduced the magnitude of the recovery significantly. We reproduced the responses to hypoxia and hypoglycemia by applying an adenosine A1 receptor antagonist, validating the clear effects of genetic receptor inactivation on synaptic transmission. We found activation of adenosine A1 receptor inhibited hippocampal synaptic transmission during the acute phase of ischemia, hypoxia, or hypoglycemia and caused the recovery from synaptic impairment after these three stressors using genetic mutant. These studies quantify the neuroprotective role of the adenosine A1 receptor during a variety of metabolic stresses within the same recording system.NEW & NOTEWORTHY Deprivation of oxygen and/or glucose causes a rapid adenosine A1 receptor-mediated decrease in synaptic transmission in mouse hippocampus. We quantified adenosine A1 receptor-mediated inhibition during and synaptic recovery after ischemia, hypoxia, and hypoglycemia of varying durations using a genetic mutant and confirmed these findings using pharmacology. Overall, using the same recording conditions, we found the acute response and the neuroprotective ability of the adenosine A1 receptor depended on the type and duration of deprivation event.
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Affiliation(s)
- Masahito Kawamura
- Department of Pharmacology, Jikei University School of Medicine, Tokyo, Japan
| | - David N Ruskin
- Department of Psychology and Neuroscience Program, Trinity College, Hartford, Connecticut
| | - Susan A Masino
- Department of Psychology and Neuroscience Program, Trinity College, Hartford, Connecticut
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Zaika TO, Evdokimov DV, Abramets II. Studies of the effect of cerebroprotective substances on the course of stress-induced behavioral depression. RESEARCH RESULTS IN PHARMACOLOGY 2018. [DOI: 10.3897/rrpharmacology.4.29946] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Introduction. Atrophic disturbances of neurons of the limbic structures of the brain, which lead to insufficient regulation of emotions and mood, cause depression. Substances with cerebroprotective activity have the ability to inhibit further development and even reverse atrophic damage to neurons.
Materials and methods. Using electrophysiological techniques, the cerebroprotective activity of piracetam, diacamf – (±)-cis-3-(2-benzimidazolyl)-1,2,2-trimethylcyclopentanone-carboxylic acid hydrochloride and the compound R-86, or 3,2’-spiro-pyrrolo-2-oxindole, was investigated in rat hippocampal slices. In behavioral experiments, there was studied the influence of the above substances, which had been administered for 20 days, on the most important manifestations of behavioral depression in rats caused by a five-day swim stress, such as the time of immobilization in the forced swim test and the indicator of preference for consuming sucrose solution. In addition, the influence of piracetam and diacamf was studied on the effects of the classic antidepressant imipramine.
Results and discussion. It was found that piracetam, diacamf and the compound R-86 in in vitro studies reduced the damage to the pyramidal hippocampal neurons caused by anoxia and aglycemia, the excitotoxic activity of N-methyl-D-aspartate and oxidative stress when hydrogen peroxide was applied to the slices. Cerebroprotective activity of the test substances, when they are systemically administered for 20 days, is linked with their antidepressant-like effect, which was manifested in a decrease in the immobilization time in the swim test and an increase in the sucrose solution consumption indicator. Co-administration of piracetam in rats potentiated antidepressant activity of imipramine, and diacamf showed additive synergism with the antidepressant.
Conclusion. Substances with cerebroprotective activity in their chronic administration may show an antidepressant-like effect. Those that potentiate the action of classical anidepressants can be used in conjunction with antidepressants during episodes of exacerbation of the disease. Less active cerebroprotective drugs can be recommended during remission for its prolongation.
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Rivera-Angulo AJ, Peña-Ortega F. Isocitrate supplementation promotes breathing generation, gasping, and autoresuscitation in neonatal mice. J Neurosci Res 2013; 92:375-88. [DOI: 10.1002/jnr.23330] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2013] [Revised: 10/15/2013] [Accepted: 10/25/2013] [Indexed: 02/01/2023]
Affiliation(s)
- Ana-Julia Rivera-Angulo
- Departamento de Neurobiología del Desarrollo y Neurofisiología; Instituto de Neurobiología; Universidad Nacional Autónoma de México-Campus Juriquilla; Querétaro México
| | - Fernando Peña-Ortega
- Departamento de Neurobiología del Desarrollo y Neurofisiología; Instituto de Neurobiología; Universidad Nacional Autónoma de México-Campus Juriquilla; Querétaro México
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Neurochemical Nature of Cognitive and Emotional Disorders under Conditions of Experimental Diabetes Mellitus. NEUROPHYSIOLOGY+ 2013. [DOI: 10.1007/s11062-013-9369-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Aungst S, England PM, Thompson SM. Critical role of trkB receptors in reactive axonal sprouting and hyperexcitability after axonal injury. J Neurophysiol 2012; 109:813-24. [PMID: 23155176 DOI: 10.1152/jn.00869.2012] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Traumatic brain injury (TBI) causes many long-term neurological complications. Some of these conditions, such as posttraumatic epilepsy, are characterized by increased excitability that typically arises after a latent period lasting from months to years, suggesting that slow injury-induced processes are critical. We tested the hypothesis that trkB activation promotes delayed injury-induced hyperexcitability in part by promoting reactive axonal sprouting. We modeled penetrative TBI with transection of the Schaffer collateral pathway in knock-in mice having an introduced mutation in the trkB receptor (trkB(F616A)) that renders it susceptible to inhibition by the novel small molecule 1NMPP1. We observed that trkB activation was increased in area CA3 1 day after injury and that expression of a marker of axonal growth, GAP43, was increased 7 days after lesion. Extracellular field potentials in stratum pyramidale of area CA3 in acute slices from sham-operated and lesioned mice were normal in control saline. Abnormal bursts of population spikes were observed under conditions that were mildly proconvulsive but only in slices taken from mice lesioned 7-21 days earlier and not in slices from control mice. trkB activation, GAP43 upregulation, and hyperexcitability were diminished by systemic administration of 1NMPP1 for 7 days after the lesion. Synaptic transmission from area CA3 to area CA1 recovered 7 days after lesion in untreated mice but not in mice treated with 1NMPP1. We conclude that trkB receptor activation and reactive axonal sprouting are critical factors in injury-induced hyperexcitability and may contribute to the neurological complications of TBI.
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Affiliation(s)
- Stephanie Aungst
- Department of Physiology and Program in Neuroscience, University of Maryland School of Medicine, Baltimore, MD, USA
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Abramets II, Evdokimov D, Talalayenko AN. Early Anoxic Damage to the Hippocampus and Its Modifications Resulting From Chronic Influences of Antidepressants. NEUROPHYSIOLOGY+ 2011. [DOI: 10.1007/s11062-011-9193-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
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Adaptación de las recomendaciones internacionales sobre reanimación neonatal 2010: comentarios. An Pediatr (Barc) 2011; 75:203.e1-14. [DOI: 10.1016/j.anpedi.2011.04.005] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2011] [Accepted: 04/22/2011] [Indexed: 11/19/2022] Open
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Wu X, Drabek T, Tisherman SA, Henchir J, Stezoski SW, Culver S, Stezoski J, Jackson EK, Garman R, Kochanek PM. Emergency preservation and resuscitation with profound hypothermia, oxygen, and glucose allows reliable neurological recovery after 3 h of cardiac arrest from rapid exsanguination in dogs. J Cereb Blood Flow Metab 2008; 28:302-11. [PMID: 17622254 DOI: 10.1038/sj.jcbfm.9600524] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
We have used a rapid induction of profound hypothermia (<10 degrees C) with delayed resuscitation using cardiopulmonary bypass (CPB) as a novel approach for resuscitation from exsanguination cardiac arrest (ExCA). We have defined this approach as emergency preservation and resuscitation (EPR). We observed that 2 h but not 3 h of preservation could be achieved with favorable outcome using ice-cold normal saline flush to induce profound hypothermia. We tested the hypothesis that adding energy substrates to saline during induction of EPR would allow intact recovery after 3 h CA. Dogs underwent rapid ExCA. Two minutes after CA, EPR was induced with arterial ice-cold flush. Four treatments (n=6/group) were defined by a flush solution with or without 2.5% glucose (G+ or G-) and with either oxygen or nitrogen (O+ or O-) rapidly targeting tympanic temperature of 8 degrees C. At 3 h after CA onset, delayed resuscitation was initiated with CPB, followed by intensive care to 72 h. At 72 h, all dogs in the O+G+ group regained consciousness, and the group had better neurological deficit scores and overall performance categories than the O-groups (both P<0.05). In the O+G- group, four of the six dogs regained consciousness. All but one dog in the O-groups remained comatose. Brain histopathology in the O-G+ was worse than the other three groups (P<0.05). We conclude that EPR induced with a flush solution containing oxygen and glucose allowed satisfactory recovery of neurological function after a 3 h of CA, suggesting benefit from substrate delivery during induction or maintenance of a profound hypothermic CA.
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Affiliation(s)
- Xianren Wu
- Safar Center for Resuscitation Research, University of Pittsburgh, Pittsburgh, Pennsylvania 15260, USA
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Drabek T, Fisk JA, Dixon CE, Garman RH, Stezoski J, Wisnewski SR, Wu X, Tisherman SA, Kochanek PM. Prolonged deep hypothermic circulatory arrest in rats can be achieved without cognitive deficits. Life Sci 2007; 81:543-52. [PMID: 17658556 DOI: 10.1016/j.lfs.2007.06.015] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2007] [Revised: 06/11/2007] [Accepted: 06/16/2007] [Indexed: 02/07/2023]
Abstract
Cardiopulmonary bypass (CPB) and deep hypothermic circulatory arrest (DHCA) enable surgical repair of cardiovascular defects. However, neurological complications can result after both CPB and DHCA. We sought to investigate if 75 min of CPB or DHCA caused motor, cognitive or histological deficits in rats. Three groups were studied: DHCA, CPB, and sham. Rats in the DHCA group were subjected to 75 min DHCA at 15 degrees C, with a total CPB duration of 75 min. Rats in the CPB group were subjected to 75 min of normothermic CPB. Shams received the same anesthesia, cannulations and infusions. Motor function was assessed using beam testing on days 3-13. Cognitive performance was evaluated using Morris water maze tasks on days 7-13. Overall Performance Category (OPC) and Neurologic Deficit Score (NDS) were assessed daily. Histological Damage Score (HDS) was assessed in survivors on day 14. Sustained deficits on beam testing were seen only in the CPB group. Rats in the CPB and DHCA groups exhibited similar cognitive performance vs. sham. There were no differences in OPC or NDS between groups. Neuronal degeneration was present only in small foci in rats after DHCA (n=4/7). However, HDS was not different in individual brain regions or viscera between DHCA or CPB vs. sham. Surprisingly, CPB, but not DHCA was associated with motor deficits vs. sham, and no cognitive deficits were seen in either group vs. sham. Future studies with longer DHCA duration will be necessary to provide targets to assess novel preservation strategies.
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Affiliation(s)
- Tomas Drabek
- Safar Center for Resuscitation Research, University of Pittsburgh, School of Medicine, Pittsburgh PA 15260, USA.
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Pugliese AM, Latini S, Corradetti R, Pedata F. Brief, repeated, oxygen-glucose deprivation episodes protect neurotransmission from a longer ischemic episode in the in vitro hippocampus: role of adenosine receptors. Br J Pharmacol 2003; 140:305-14. [PMID: 12970092 PMCID: PMC1574038 DOI: 10.1038/sj.bjp.0705442] [Citation(s) in RCA: 84] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
Abstract
1. Ischemic preconditioning in the brain consists of reducing the sensitivity of neuronal tissue to further, more severe, ischemic insults. We recorded field epsps (fepsps) extracellularly from hippocampal slices to develop a model of in vitro ischemic preconditioning and to evaluate the role of A1, A2A and A3 adenosine receptors in this phenomenon. 2. The application of an ischemic insult, obtained by glucose and oxygen deprivation for 7 min, produced an irreversible depression of synaptic transmission. Ischemic preconditioning was induced by four ischemic insults (2 min each) separated by 13 min of normoxic conditions. After 30 min, an ischemic insult of 7 min was applied. This protocol substantially protected the tissue from the irreversible depression of synaptic activity. 3. The selective adenosine A1 receptor antagonist, 8-cyclopentyl-1,3-dipropylxanthine (DPCPX, 100 nm), completely prevented the protective effect of preconditioning. The selective adenosine A2A receptor antagonist 4-(2-[7-amino-2-(2-furyl)[1,2,4]triazolo[2,3-a][1,3,5]triazin-5-ylamino]ethyl)phenol (ZM 241385, 100 nm) did not modify the magnitude of fepsp recovery compared to control slices. The selective A3 adenosine receptor antagonists, 3-propyl-6-ethyl-5[ethyl(thio)carbonyl]-2-phenyl-4-propyl-3-pyridinecarboxylate (MRS 1523, 100 nm) significantly improved the recovery of fepsps after 7 min of ischemia. 4. Our results show that in vitro ischemic preconditioning allows CA1 hippocampal neurons to become resistant to prolonged exposure to ischemia. Adenosine, by stimulating A1 receptors, plays a crucial role in eliciting the cell mechanisms underlying preconditioning; A2A receptors are not involved in this phenomenon, whereas A3 receptor activation is harmful to ischemic preconditioning.
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Affiliation(s)
- Anna Maria Pugliese
- Department of Preclinical and Clinical Pharmacology, University of Florence, Viale Pieraccini 6, 50139 Florence, Italy
| | - Serena Latini
- Department of Preclinical and Clinical Pharmacology, University of Florence, Viale Pieraccini 6, 50139 Florence, Italy
| | - Renato Corradetti
- Department of Preclinical and Clinical Pharmacology, University of Florence, Viale Pieraccini 6, 50139 Florence, Italy
| | - Felicita Pedata
- Department of Preclinical and Clinical Pharmacology, University of Florence, Viale Pieraccini 6, 50139 Florence, Italy
- Author for correspondence:
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