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Mnemonic and behavioral effects of biperiden, an M1-selective antagonist, in the rat. Psychopharmacology (Berl) 2018; 235:2013-2025. [PMID: 29680966 DOI: 10.1007/s00213-018-4899-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/06/2017] [Accepted: 04/09/2018] [Indexed: 10/17/2022]
Abstract
RATIONALE There is a persistent pressing need for valid animal models of cognitive and mnemonic disruptions (such as seen in Alzheimer's disease and other dementias) usable for preclinical research. OBJECTIVES We have set out to test the validity of administration of biperiden, an M1-acetylcholine receptor antagonist with central selectivity, as a potential tool for generating a fast screening model of cognitive impairment, in outbred Wistar rats. METHODS We used several variants of the Morris water maze task: (1) reversal learning, to assess cognitive flexibility, with probe trials testing memory retention; (2) delayed matching to position (DMP), to evaluate working memory; and (3) "counter-balanced acquisition," to test for possible anomalies in acquisition learning. We also included a visible platform paradigm to reveal possible sensorimotor and motivational deficits. RESULTS A significant effect of biperiden on memory acquisition and retention was found in the counter-balanced acquisition and probe trials of the counter-balanced acquisition and reversal tasks. Strikingly, a less pronounced deficit was observed in the DMP. No effects were revealed in the reversal learning task. CONCLUSIONS Based on our results, we do not recommend biperiden as a reliable tool for modeling cognitive impairment.
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Jiao-Tai-Wan Improves Cognitive Dysfunctions through Cholinergic Pathway in Scopolamine-Treated Mice. BIOMED RESEARCH INTERNATIONAL 2018; 2018:3538763. [PMID: 30050927 PMCID: PMC6040267 DOI: 10.1155/2018/3538763] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/21/2018] [Accepted: 05/09/2018] [Indexed: 11/17/2022]
Abstract
Cognitive dysfunction is characterized as the gradual loss of learning ability and cognitive function, as well as memory impairment. Jiao-tai-wan (JTW), a Chinese medicine prescription including Coptis chinensis and cinnamon, is mainly used for the treatment of insomnia, while the effect of JTW in improving cognitive function has not been reported. In this study, we employed a scopolamine- (SCOP-) treated learning and memory deficit model to explore whether JTW could alleviate cognitive dysfunction. In behavioral experiments, Morris water maze, Y-maze, fearing condition test, and novel object discrimination test were conducted. Results showed that oral administration of JTW (2.1 g/kg, 4.2 g/kg, and 8.4 g/kg) can effectively promote the ability of spatial recognition, learning and memory, and the memory ability of fresh things of SCOP-treated mice. In addition, the activity of acetylcholinesterase (AChE) was effectively decreased; the activity of choline acetyltransferase (ChAT) and concentration of acetylcholine (Ach) were improved after JTW treatment in both hippocampus and cortex of SCOP-treated mice. JTW effectively ameliorated oxidative stress because of decreased the levels of malondialdehyde (MDA) and reactive oxygen species (ROS) and increased the activities of superoxide dismutase (SOD) and catalase (CAT) in hippocampus and cortex. Furthermore, JTW promotes the expressions of neurotrophic factors including postsynaptic density protein 95 (PSD95) and synaptophysin (SYN) and brain-derived neurotrophic factor (BDNF) in both hippocampus and cortex. Nissl's staining shows that the neuroprotective effect of JTW was very effective. To sum up, JTW might be a promising candidate for the treatment of cognitive dysfunction.
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Vojtechova I, Petrasek T, Maleninska K, Brozka H, Tejkalova H, Horacek J, Stuchlik A, Vales K. Neonatal immune activation by lipopolysaccharide causes inadequate emotional responses to novel situations but no changes in anxiety or cognitive behavior in Wistar rats. Behav Brain Res 2018; 349:42-53. [PMID: 29729302 DOI: 10.1016/j.bbr.2018.05.001] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2018] [Revised: 04/27/2018] [Accepted: 05/01/2018] [Indexed: 11/28/2022]
Abstract
Infection during the prenatal or neonatal stages of life is considered one of the major risk factors for the development of mental diseases such as schizophrenia or autism. However, the impacts of such an immune challenge on adult behavior are still not clear. In our study, we used a model of early postnatal immune activation by the application of bacterial endotoxin lipopolysaccharide (LPS) to rat pups at a dose of 2 mg/kg from postnatal day (PD) 5 to PD 9. In adulthood, the rats were tested in a battery of tasks probing various aspects of behavior: spontaneous activity (open field test), social behavior (social interactions and female bedding exploration), anxiety (elevated plus maze), cognition (active place avoidance in Carousel) and emotional response (ultrasonic vocalization recording). Moreover, we tested sensitivity to acute challenge with MK-801, a psychotomimetic drug. Our results show that the application of LPS led to increased self-grooming in the female bedding exploration test and inadequate emotional reactions in Carousel maze displayed by ultrasonic vocalizations. However, it did not have serious consequences on exploration, locomotion, social behavior or cognition. Furthermore, exposition to MK-801 did not trigger social or cognitive deficits in the LPS-treated rats. We conclude that the emotional domain is the most sensitive to the changes induced by neonatal immune activation in rats, including a disrupted response to novel and stressful situations in early adulthood (similar to that observed in human patients suffering from schizophrenia or autism), while other aspects of tested behavior remain unaffected.
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Affiliation(s)
- Iveta Vojtechova
- First Faculty of Medicine, Charles University, Katerinska 32, 12108, Prague 2, Czech Republic; Department of Neurophysiology of Memory, Institute of Physiology of the Czech Academy of Sciences, Videnska 1083, 14220, Prague 4, Czech Republic; National Institute of Mental Health, Topolova 748, 25067, Klecany, Czech Republic.
| | - Tomas Petrasek
- Department of Neurophysiology of Memory, Institute of Physiology of the Czech Academy of Sciences, Videnska 1083, 14220, Prague 4, Czech Republic; National Institute of Mental Health, Topolova 748, 25067, Klecany, Czech Republic.
| | - Kristyna Maleninska
- Department of Neurophysiology of Memory, Institute of Physiology of the Czech Academy of Sciences, Videnska 1083, 14220, Prague 4, Czech Republic.
| | - Hana Brozka
- Department of Neurophysiology of Memory, Institute of Physiology of the Czech Academy of Sciences, Videnska 1083, 14220, Prague 4, Czech Republic.
| | - Hana Tejkalova
- National Institute of Mental Health, Topolova 748, 25067, Klecany, Czech Republic.
| | - Jiri Horacek
- National Institute of Mental Health, Topolova 748, 25067, Klecany, Czech Republic.
| | - Ales Stuchlik
- Department of Neurophysiology of Memory, Institute of Physiology of the Czech Academy of Sciences, Videnska 1083, 14220, Prague 4, Czech Republic.
| | - Karel Vales
- National Institute of Mental Health, Topolova 748, 25067, Klecany, Czech Republic.
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Uttl L, Petrasek T, Sengul H, Svojanovska M, Lobellova V, Vales K, Radostova D, Tsenov G, Kubova H, Mikulecka A, Svoboda J, Stuchlik A. Chronic MK-801 Application in Adolescence and Early Adulthood: A Spatial Working Memory Deficit in Adult Long-Evans Rats But No Changes in the Hippocampal NMDA Receptor Subunits. Front Pharmacol 2018; 9:42. [PMID: 29487522 PMCID: PMC5816576 DOI: 10.3389/fphar.2018.00042] [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: 09/22/2017] [Accepted: 01/15/2018] [Indexed: 01/27/2023] Open
Abstract
The role of NMDA receptors in learning, memory and hippocampal function has long been recognized. Post-mortem studies have indicated that the expression or subunit composition of the NMDA glutamate receptor subtype might be related to the impaired cognitive functions found in schizophrenia patients. NMDA receptor antagonists have been used to develop animal models of this disorder. There is accumulating evidence showing that not only the acute but also the chronic application of NMDA receptor antagonists may induce schizophrenia-like alterations in behavior and brain functions. However, limited evidence is available regarding the consequences of NMDA receptor blockage during periods of adolescence and early adulthood. This study tested the hypothesis that a 2-week treatment of male Long-Evans and Wistar rats with dizocilpine (MK-801; 0.5 mg/kg daily) starting at postnatal days (PD) 30 and 60 would cause a long-term cognitive deficit and changes in the levels of NMDA receptor subunits. The working memory version of the Morris water maze (MWM) and active place avoidance with reversal on a rotating arena (Carousel) requiring cognitive coordination and flexibility probed cognitive functions and an elevated-plus maze (EPM) was used to measure anxiety-like behavior. The western blot method was used to determine changes in NMDA receptor subunit levels in the hippocampus. Our results showed no significant changes in behaviors in Wistar rats. Slightly elevated anxiety-like behavior was observed in the EPM in Long-Evans rats with the onset of treatment on PD 30. Furthermore, Long-Evans rats treated from PD 60 displayed impaired working memory in the MWM. There were; however, no significant changes in the levels of NMDA receptor subunits because of MK-801 administration. These findings suggest that a 2-week treatment starting on PD 60 in Long-Evans rats leads to long-term changes in working memory, but this deficit is not paralleled by changes in NMDA receptor subunits. These results support the face validity, but not construct validity of this model. We suggest that chronic treatment of adolescent and adult rats does not constitute a plausible animal model of schizophrenia.
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Affiliation(s)
- Libor Uttl
- Department of Developmental Epileptology, Institute of Physiology, Czech Academy of Sciences, Prague, Czechia.,Department of Experimental Neurobiology, National Institute of Mental Health, Klecany, Czechia
| | - Tomas Petrasek
- Department of Neurophysiology of Memory, Institute of Physiology, Czech Academy of Sciences, Prague, Czechia
| | - Hilal Sengul
- Department of Neurophysiology of Memory, Institute of Physiology, Czech Academy of Sciences, Prague, Czechia.,Radboud Institute for Molecular Life Sciences, Radboud University, Nijmegen, Netherlands
| | - Marketa Svojanovska
- Department of Neurophysiology of Memory, Institute of Physiology, Czech Academy of Sciences, Prague, Czechia
| | - Veronika Lobellova
- Department of Neurophysiology of Memory, Institute of Physiology, Czech Academy of Sciences, Prague, Czechia
| | - Karel Vales
- Department of Experimental Neurobiology, National Institute of Mental Health, Klecany, Czechia.,Department of Neurophysiology of Memory, Institute of Physiology, Czech Academy of Sciences, Prague, Czechia
| | - Dominika Radostova
- Department of Neurophysiology of Memory, Institute of Physiology, Czech Academy of Sciences, Prague, Czechia.,Second Faculty of Medicine, Charles University, Prague, Czechia
| | - Grygoriy Tsenov
- Department of Developmental Epileptology, Institute of Physiology, Czech Academy of Sciences, Prague, Czechia
| | - Hana Kubova
- Department of Developmental Epileptology, Institute of Physiology, Czech Academy of Sciences, Prague, Czechia
| | - Anna Mikulecka
- Department of Developmental Epileptology, Institute of Physiology, Czech Academy of Sciences, Prague, Czechia
| | - Jan Svoboda
- Department of Neurophysiology of Memory, Institute of Physiology, Czech Academy of Sciences, Prague, Czechia
| | - Ales Stuchlik
- Department of Neurophysiology of Memory, Institute of Physiology, Czech Academy of Sciences, Prague, Czechia
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Laczó J, Markova H, Lobellova V, Gazova I, Parizkova M, Cerman J, Nekovarova T, Vales K, Klovrzova S, Harrison J, Windisch M, Vlcek K, Svoboda J, Hort J, Stuchlik A. Scopolamine disrupts place navigation in rats and humans: a translational validation of the Hidden Goal Task in the Morris water maze and a real maze for humans. Psychopharmacology (Berl) 2017; 234:535-547. [PMID: 27885411 DOI: 10.1007/s00213-016-4488-2] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/17/2016] [Accepted: 11/11/2016] [Indexed: 12/18/2022]
Abstract
RATIONALE Development of new drugs for treatment of Alzheimer's disease (AD) requires valid paradigms for testing their efficacy and sensitive tests validated in translational research. OBJECTIVES We present validation of a place-navigation task, a Hidden Goal Task (HGT) based on the Morris water maze (MWM), in comparable animal and human protocols. METHODS We used scopolamine to model cognitive dysfunction similar to that seen in AD and donepezil, a symptomatic medication for AD, to assess its potential reversible effect on this scopolamine-induced cognitive dysfunction. We tested the effects of scopolamine and the combination of scopolamine and donepezil on place navigation and compared their effects in human and rat versions of the HGT. Place navigation testing consisted of 4 sessions of HGT performed at baseline, 2, 4, and 8 h after dosing in humans or 1, 2.5, and 5 h in rats. RESULTS Scopolamine worsened performance in both animals and humans. In the animal experiment, co-administration of donepezil alleviated the negative effect of scopolamine. In the human experiment, subjects co-administered with scopolamine and donepezil performed similarly to subjects on placebo and scopolamine, indicating a partial ameliorative effect of donepezil. CONCLUSIONS In the task based on the MWM, scopolamine impaired place navigation, while co-administration of donepezil alleviated this effect in comparable animal and human protocols. Using scopolamine and donepezil to challenge place navigation testing can be studied concurrently in animals and humans and may be a valid and reliable model for translational research, as well as for preclinical and clinical phases of drug trials.
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Affiliation(s)
- Jan Laczó
- Department of Neurology, Second Faculty of Medicine, Charles University and Motol University Hospital, V Uvalu 84, 150 06, Prague, Czech Republic. .,International Clinical Research Center, St. Anne's University Hospital Brno, Pekarska 53, 656 91, Brno, Czech Republic.
| | - Hana Markova
- Department of Neurology, Second Faculty of Medicine, Charles University and Motol University Hospital, V Uvalu 84, 150 06, Prague, Czech Republic.,International Clinical Research Center, St. Anne's University Hospital Brno, Pekarska 53, 656 91, Brno, Czech Republic
| | - Veronika Lobellova
- Department of Neurophysiology of Memory, Institute of Physiology, Academy of Sciences of the Czech Republic, Videnska 1083, 142 20, Prague, Czech Republic
| | - Ivana Gazova
- Department of Neurology, Second Faculty of Medicine, Charles University and Motol University Hospital, V Uvalu 84, 150 06, Prague, Czech Republic.,International Clinical Research Center, St. Anne's University Hospital Brno, Pekarska 53, 656 91, Brno, Czech Republic
| | - Martina Parizkova
- Department of Neurology, Second Faculty of Medicine, Charles University and Motol University Hospital, V Uvalu 84, 150 06, Prague, Czech Republic.,International Clinical Research Center, St. Anne's University Hospital Brno, Pekarska 53, 656 91, Brno, Czech Republic
| | - Jiri Cerman
- Department of Neurology, Second Faculty of Medicine, Charles University and Motol University Hospital, V Uvalu 84, 150 06, Prague, Czech Republic.,International Clinical Research Center, St. Anne's University Hospital Brno, Pekarska 53, 656 91, Brno, Czech Republic
| | - Tereza Nekovarova
- Department of Neurophysiology of Memory, Institute of Physiology, Academy of Sciences of the Czech Republic, Videnska 1083, 142 20, Prague, Czech Republic.,National Institute of Mental Health, Topolova 748, 250 67, Klecany, Czech Republic
| | - Karel Vales
- Department of Neurophysiology of Memory, Institute of Physiology, Academy of Sciences of the Czech Republic, Videnska 1083, 142 20, Prague, Czech Republic.,National Institute of Mental Health, Topolova 748, 250 67, Klecany, Czech Republic
| | - Sylva Klovrzova
- Department of Pharmaceutical Technology, Faculty of Pharmacy, Charles University in Prague, Akademika Heyrovskeho 1203, 500 05, Hradec Králové, Czech Republic
| | - John Harrison
- Metis Cognition Ltd., Park House, Kilmington Common, Warminster, Wiltshire, BA12 6QY, UK.,Imperial College Faculty of Medicine, South Kensington Campus, London, SW7 2AZ, UK
| | - Manfred Windisch
- NeuroScios GmbH, Willersdorferstrasse 6, A-8061, Radegund/Graz, Austria
| | - Kamil Vlcek
- Department of Neurophysiology of Memory, Institute of Physiology, Academy of Sciences of the Czech Republic, Videnska 1083, 142 20, Prague, Czech Republic
| | - Jan Svoboda
- Department of Neurophysiology of Memory, Institute of Physiology, Academy of Sciences of the Czech Republic, Videnska 1083, 142 20, Prague, Czech Republic
| | - Jakub Hort
- Department of Neurology, Second Faculty of Medicine, Charles University and Motol University Hospital, V Uvalu 84, 150 06, Prague, Czech Republic.,International Clinical Research Center, St. Anne's University Hospital Brno, Pekarska 53, 656 91, Brno, Czech Republic
| | - Ales Stuchlik
- Department of Neurophysiology of Memory, Institute of Physiology, Academy of Sciences of the Czech Republic, Videnska 1083, 142 20, Prague, Czech Republic.
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6
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Svoboda J, Popelikova A, Stuchlik A. Drugs Interfering with Muscarinic Acetylcholine Receptors and Their Effects on Place Navigation. Front Psychiatry 2017; 8:215. [PMID: 29170645 PMCID: PMC5684124 DOI: 10.3389/fpsyt.2017.00215] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/30/2017] [Accepted: 10/16/2017] [Indexed: 12/25/2022] Open
Abstract
Muscarinic acetylcholine receptors (mAChRs) have been found to regulate many diverse functions, ranging from motivation and feeding to spatial navigation, an important and widely studied type of cognitive behavior. Systemic administration of non-selective antagonists of mAChRs, such as scopolamine or atropine, have been found to have adverse effects on a vast majority of place navigation tasks. However, many of these results may be potentially confounded by disruptions of functions other than spatial learning and memory. Although studies with selective antimuscarinics point to mutually opposite effects of M1 and M2 receptors, their particular contribution to spatial cognition is still poorly understood, partly due to a lack of truly selective agents. Furthermore, constitutive knock-outs do not always support results from selective antagonists. For modeling impaired spatial cognition, the scopolamine-induced amnesia model still maintains some limited validity, but there is an apparent need for more targeted approaches such as local intracerebral administration of antagonists, as well as novel techniques such as optogenetics focused on cholinergic neurons and chemogenetics aimed at cells expressing metabotropic mAChRs.
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Affiliation(s)
- Jan Svoboda
- Institute of Physiology of the Czech Academy of Sciences, Prague, Czechia
| | - Anna Popelikova
- Institute of Physiology of the Czech Academy of Sciences, Prague, Czechia
| | - Ales Stuchlik
- Institute of Physiology of the Czech Academy of Sciences, Prague, Czechia
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7
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Hatalova H, Radostova D, Pistikova A, Vales K, Stuchlik A. Detrimental effect of clomipramine on hippocampus-dependent learning in an animal model of obsessive-compulsive disorder induced by sensitization with d2/d3 agonist quinpirole. Behav Brain Res 2016; 317:210-217. [PMID: 27659555 DOI: 10.1016/j.bbr.2016.09.042] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2016] [Revised: 09/15/2016] [Accepted: 09/18/2016] [Indexed: 11/27/2022]
Abstract
Quinpirole (QNP) sensitization is one of the commonly used animal models of obsessive-compulsive disorder (OCD). We have previously shown that QNP-sensitized animals display a robust cognitive flexibility deficit in an active place avoidance task with reversal in Carousel maze. This is in line with numerous human studies showing deficits in cognitive flexibility in OCD patients. Here we explored the effect of clomipramine, an effective OCD drug that attenuates compulsive checking in QNP, on sensitized rats in acquisition and reversal performances in an active place avoidance task. We found that the addition of clomipramine to QNP-sensitization impairs acquisition learning to a degree that reversal learning could not be tested. In a hippocampal-independent two-way active avoidance task clomipramine did not have an effect on acquisition learning in QNP-treated rats; suggesting that the detrimental effect of clomipramine is hippocampus based. We also tested the effect of risperidone in QNP-sensitized animals, which is not effective in OCD treatment. Risperidone also marginally impaired acquisition learning of QNP-sensitized animals, but not reversal. Moreover, we explored the effect of the augmentation of clomipramine treatment with risperidone in QNP-sensitized rats- a common step in treating SRI-unresponsive OCD patients. Only under this treatment regime animals were unimpaired in both acquisition and reversal learning. Augmentation of SRI with neuroleptics therefore could be beneficial for improving cognitive flexibility, and possibly be considered a first line of treatment in patients with reduced cognitive flexibility.
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Affiliation(s)
- Hana Hatalova
- Institute of Physiology, Academy of Sciences of the Czech Republic, Videnska 1083, 142 20, Prague, Czech Republic.
| | - Dominika Radostova
- Institute of Physiology, Academy of Sciences of the Czech Republic, Videnska 1083, 142 20, Prague, Czech Republic
| | - Adela Pistikova
- Institute of Physiology, Academy of Sciences of the Czech Republic, Videnska 1083, 142 20, Prague, Czech Republic
| | - Karel Vales
- Institute of Physiology, Academy of Sciences of the Czech Republic, Videnska 1083, 142 20, Prague, Czech Republic; National Institute of Mental Health, Topolova 748, 250 67, Klecany, Czech Republic
| | - Ales Stuchlik
- Institute of Physiology, Academy of Sciences of the Czech Republic, Videnska 1083, 142 20, Prague, Czech Republic.
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Stuchlík A, Petrásek T, Prokopová I, Holubová K, Hatalová H, Valeš K, Kubík S, Dockery C, Wesierska M. Place avoidance tasks as tools in the behavioral neuroscience of learning and memory. Physiol Res 2014; 62:S1-S19. [PMID: 24329689 DOI: 10.33549/physiolres.932635] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
Spatial navigation comprises a widely-studied complex of animal behaviors. Its study offers many methodological advantages over other approaches, enabling assessment of a variety of experimental questions and the possibility to compare the results across different species. Spatial navigation in laboratory animals is often considered a model of higher human cognitive functions including declarative memory. Almost fifteen years ago, a novel dry-arena task for rodents was designed in our laboratory, originally named the place avoidance task, and later a modification of this approach was established and called active place avoidance task. It employs a continuously rotating arena, upon which animals are trained to avoid a stable sector defined according to room-frame coordinates. This review describes the development of the place avoidance tasks, evaluates the cognitive processes associated with performance and explores the application of place avoidance in the testing of spatial learning after neuropharmacological, lesion and other experimental manipulations.
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Affiliation(s)
- A Stuchlík
- Institute of Physiology AS CR, Prague, Czech Republic.
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STUCHLIK A, KUBIK S, VLCEK K, VALES K. Spatial Navigation: Implications for Animal Models, Drug Development and Human Studies. Physiol Res 2014; 63:S237-49. [DOI: 10.33549/physiolres.932660] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
Abstract
Spatial navigation and memory is considered to be a part of the declarative memory system and it is widely used as an animal model of human declarative memory. However, spatial tests typically involve only static settings, despite the dynamic nature of the real world. Animals, as well as people constantly need to interact with moving objects, other subjects or even with entire moving environments (flowing water, running stairway). Therefore, we design novel spatial tests in dynamic environments to study brain mechanisms of spatial processing in more natural settings with an interdisciplinary approach including neuropharmacology. We also translate data from neuropharmacological studies and animal models into development of novel therapeutic approaches to neuropsychiatric disorders and more sensitive screening tests for impairments of memory, thought, and behavior.
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Affiliation(s)
- A. STUCHLIK
- Department of Neurophysiology of Memory, Institute of Physiology Academy of Sciences of the Czech Republic, Prague, Czech Republic
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10
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Entlerova M, Lobellova V, Hatalova H, Zemanova A, Vales K, Stuchlik A. Comparison of Long-Evans and Wistar rats in sensitivity to central cholinergic blockade with scopolamine in two spatial tasks: An active place avoidance and the Morris water maze. Physiol Behav 2013; 120:11-8. [DOI: 10.1016/j.physbeh.2013.06.024] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2012] [Revised: 01/13/2013] [Accepted: 06/27/2013] [Indexed: 01/27/2023]
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11
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Lobellova V, Entlerova M, Svojanovska B, Hatalova H, Prokopova I, Petrasek T, Vales K, Kubik S, Fajnerova I, Stuchlik A. Two learning tasks provide evidence for disrupted behavioural flexibility in an animal model of schizophrenia-like behaviour induced by acute MK-801: A dose–response study. Behav Brain Res 2013; 246:55-62. [DOI: 10.1016/j.bbr.2013.03.006] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2013] [Revised: 02/27/2013] [Accepted: 03/04/2013] [Indexed: 02/06/2023]
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Visuospatial working memory is impaired in an animal model of schizophrenia induced by acute MK-801: An effect of pretraining. Pharmacol Biochem Behav 2013; 106:117-23. [DOI: 10.1016/j.pbb.2013.03.014] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/16/2013] [Revised: 03/18/2013] [Accepted: 03/23/2013] [Indexed: 11/18/2022]
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13
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Scopolamine Has Different Influences on Spatial Reference Memory and Spatial Working Memory in Rats. ACTA PSYCHOLOGICA SINICA 2009. [DOI: 10.3724/sp.j.1041.2009.00337] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Dopamine D2 receptors and alpha1-adrenoceptors synergistically modulate locomotion and behavior of rats in a place avoidance task. Behav Brain Res 2008; 189:139-44. [DOI: 10.1016/j.bbr.2007.12.025] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2007] [Revised: 12/18/2007] [Accepted: 12/21/2007] [Indexed: 11/17/2022]
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15
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Stuchlik A, Vales K. Role of alpha1- and alpha2-adrenoceptors in the regulation of locomotion and spatial behavior in the active place avoidance task: A dose–response study. Neurosci Lett 2008; 433:235-40. [DOI: 10.1016/j.neulet.2008.01.013] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2007] [Revised: 01/08/2008] [Accepted: 01/10/2008] [Indexed: 11/25/2022]
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16
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von Linstow Roloff E, Harbaran D, Micheau J, Platt B, Riedel G. Dissociation of cholinergic function in spatial and procedural learning in rats. Neuroscience 2007; 146:875-89. [PMID: 17418958 DOI: 10.1016/j.neuroscience.2007.02.038] [Citation(s) in RCA: 49] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2006] [Revised: 12/22/2006] [Accepted: 02/04/2007] [Indexed: 11/25/2022]
Abstract
The cholinergic system has long been known for its role in acquisition and retention of new information. Scopolamine, a muscarinic acetylcholine receptor antagonist impairs multiple memory systems, and this has promoted the notion that drug-induced side effects are responsible for diminished task execution rather than selective impairments on learning and memory per se. Here, we revisit this issue with the aim to dissociate the effects of scopolamine (0.2-1.0 mg/kg) on spatial learning in the water maze. Experiments 1 and 2 showed that acquisition of a reference memory paradigm with constant platform location is compromised by scopolamine independent of whether the animals are pre-trained or not. Deficits were paralleled by drug induced side-effects on sensorimotor parameters. Experiment 3 explored the role of muscarinic receptors in acquisition of an episodic-like spatial delayed matching to position (DMTP) protocol, and scopolamine still caused a learning deficit and side-effects on sensorimotor performance. Rats extensively pre-trained in the DMTP protocol with 30 s and 1 h delays over several months in experiment 4 and tested in a within-subject design under saline and scopolamine had no sensorimotor deficits, but spatial working memory remained compromised. Experiment 5 used the rising Atlantis platform in the DMTP paradigm. Intricate analysis of the amount of dwelling and its location revealed a clear deficit in spatial working memory induced by scopolamine, but there was no effect on sensorimotor or procedural task demands. Apart from the well-known contribution to sensorimotor and procedural learning, our findings provide compelling evidence for an important role of muscarinic acetylcholine receptor signaling in spatial episodic-like memory.
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Affiliation(s)
- E von Linstow Roloff
- School of Medical Sciences, College of Life Science and Medicine, University of Aberdeen, Foresterhill, Aberdeen, AB25 2ZD, UK
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Stuchlik A, Rehakova L, Rambousek L, Svoboda J, Vales K. Manipulation of D2 receptors with quinpirole and sulpiride affects locomotor activity before spatial behavior of rats in an active place avoidance task. Neurosci Res 2007; 58:133-9. [PMID: 17360063 DOI: 10.1016/j.neures.2007.02.006] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2006] [Revised: 01/26/2007] [Accepted: 02/07/2007] [Indexed: 11/30/2022]
Abstract
Dopamine-mediated neurotransmission is widely studied with respect to motivation, motor activity and cognitive processes. The aim of the present study was to evaluate the role of D2 receptors in the behavior of rats in the active allothetic place avoidance (AAPA) task. D2 receptor agonist quinpirole and antagonist sulpiride were administered intraperitoneally 20min prior to behavioral testing. Administration of quinpirole led to dose-dependent increase of locomotion; the spatial efficiency was spared across the dose range studied (0.05-1.0mg/kg). In contrast, sulpiride decreased locomotor activity at a dose not influencing spatial efficiency (60mg/kg); the highest dose of sulpiride (100mg/kg) caused a deficit in both locomotor and spatial behaviors. The results suggest a relatively lesser importance of D2 receptors for spatial efficiency in the AAPA task, with a predominant influence of D2 receptor ligands on motor activity.
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Affiliation(s)
- Ales Stuchlik
- Department of Neurophysiology of Memory, Institute of Physiology, Academy of Sciences, Videnska 1083, Prague 142 20, Czech Republic.
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Stuchlik A. Further study of the effects of dopaminergic D1 drugs on place avoidance behavior using pretraining: some negative evidence. Behav Brain Res 2007; 178:47-52. [PMID: 17207865 DOI: 10.1016/j.bbr.2006.11.046] [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: 10/04/2006] [Revised: 11/27/2006] [Accepted: 11/29/2006] [Indexed: 11/20/2022]
Abstract
Dopaminergic neurotransmission is considered to modulate cognitive processes, including spatial memory. The aim of this study was to further evaluate the role of the D1 receptor system in an active allothetic place avoidance (AAPA) task using pretrained rats. Our previous results showed enhanced AAPA learning after systemic injections of low doses of D1 agonist A77636, and the impairment of AAPA acquisition by D1 blocker SCH23390 [Stuchlik A, Vales K. Effect of dopamine D1 receptor antagonist SCH23390 and agonist A77636 on active allothetic place avoidance, a spatial cognition task. Behav Brain Res 2006;172(2):250-255]. In the present study, we used the intact-pretraining paradigm, in which animals were trained to the task prior to the injections and subsequently retrieval and reacquisition of AAPA while under the effects of the drugs was tested. Results showed that the intact pretraining partly eliminated the effects of A77636 and SCH23390 on AAPA performance, but a higher dose of SCH23390 caused a motor deficit in the retrieval session. We conclude that in the previous study, D1-active drugs may have had influence upon the non-spatial aspects of the AAPA.
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Affiliation(s)
- Ales Stuchlik
- Department of Neurophysiology of Memory, Institute of Physiology, Academy of Sciences, Videnska 1083, Prague 4, 142 20, Czech Republic.
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Stuchlik A, Vales K. Effect of dopamine D1 receptor antagonist SCH23390 and D1 agonist A77636 on active allothetic place avoidance, a spatial cognition task. Behav Brain Res 2006; 172:250-5. [PMID: 16781786 DOI: 10.1016/j.bbr.2006.05.008] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2006] [Revised: 05/03/2006] [Accepted: 05/05/2006] [Indexed: 11/19/2022]
Abstract
Central dopamine neurotransmission is implicated in several physiological and pathophysiological neural processes. In the past years, attention was paid to the role of dopaminergic signaling in the cognitive processes. In the present study, we investigate role of dopamine D1 receptors in spatial cognition using systemic administration of D1-specific agonist A77636 and D1 antagonist SCH23390. Subsequently, animals were tested in a spatial cognition behavioral task, active allothetic place avoidance (AAPA), a task which requires rats to separate spatial stimuli from two continuously dissociated subsets. The D1 agonist A77636 at doses 0.1 and 0.5mg/kg improved the task solution, whilst application of D1 antagonist SCH23390 (0.02 and 0.05 mg/kg) caused an impairment in the AAPA task. These findings support the notion that brain dopaminergic D1 neurotransmitter system modulates neural processes underlying spatial cognition.
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Affiliation(s)
- Ales Stuchlik
- Institute of Physiology, Academy of Sciences, Videnska 1083, Prague 14220, Czech Republic.
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Vales K, Bubenikova-Valesova V, Klement D, Stuchlik A. Analysis of sensitivity to MK-801 treatment in a novel active allothetic place avoidance task and in the working memory version of the Morris water maze reveals differences between Long-Evans and Wistar rats. Neurosci Res 2006; 55:383-8. [PMID: 16712995 DOI: 10.1016/j.neures.2006.04.007] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2006] [Revised: 04/04/2006] [Accepted: 04/07/2006] [Indexed: 01/17/2023]
Abstract
The aims of the present study were to compare the effect of subchronic administration of MK-801 on performance in the active allothetic place avoidance (AAPA) task and in the working version of Morris water maze (MWM) in Long-Evans and Wistar rats. Animals were trained for four daily sessions either in the AAPA or in the working memory version of the MWM. Wistar rats treated by MK-801 (0.1 mg/kg) showed a cognitive deficit in the AAPA task without a significant hyperlocomotion, whereas they were not impaired in the working memory version of the MWM compared to controls. Long-Evans rats treated by MK-801 (0.1 mg/kg) were not impaired either in the AAPA task or in the MWM task. Higher doses of MK-801 (0.2 and 0.3 mg/kg) produced hyperlocomotion in both strains which corresponded to an inability to solve both spatial tasks. Long-Evans rats were superior in the MWM to the Wistar rats in the groups treated with the low dose of MK-801. In conclusion, intact Wistar rats can efficiently solve both spatial tasks; however, they are more sensitive to MK-801-induced behavioural deficit. This has relevance for modeling of the schizophrenia-related deficits and for screening substances for their therapeutic potential.
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Affiliation(s)
- Karel Vales
- Institute of Physiology, Academy of Sciences, Videnska 1083, 14220 Prague 4, Czech Republic
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