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Fathalizade F, Baghani M, Khakpai F, Fazli-Tabaei S, Zarrindast MR. GABA-ergic agents modulated the effects of histamine on male mice behavior in the elevated plus-maze. Exp Physiol 2022; 107:233-242. [PMID: 35137999 DOI: 10.1113/ep090060] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2021] [Accepted: 01/28/2022] [Indexed: 11/08/2022]
Abstract
NEW FINDINGS What is the main question of this study? Is there an interaction between histamine and GABAergic system on modulation of anxiety in mice? What is the main finding and its importance? There is a synergistic anxiogenic effect between histamine and bicuculline in mice. This effect may be due to a direct or indirect effect of the histaminergic system on the GABAergic system. ABSTRACT There are documents that both histaminergic and GABAergic systems are participated in the neurobiology of anxiety behavior. In the current research, we investigated the effects of the histaminergic system and GABAA receptor agents on anxiety-related behaviors and their interaction using the elevated plus-maze (EPM) test in mice. Intraperitoneally (i.p.) administration of muscimol (0.12 and 0.25 mg/kg) increased the open arm time (OAT) (p < 0.001) without affecting the open arm entries (OAE) and locomotor activity, showing an anxiolytic effect. I.p. injection of bicuculline (0.5 and 1 mg/kg) decreased OAT (p < 0.001) but not OAE and locomotor activity, suggesting an anxiogenic behavior. Intracerebroventricularly (i.c.v.) microinjection of histamine (2.5 and 5 μg/mouse) declined OAT (p < 0.001) but not OAE and locomotor activity, indicating an anxiogenic response. Co-administration of histamine with GABAergic agents, muscimol (0.06 mg/kg; i.p.) and bicuculline (0.25 mg/kg; i.p.), decreased (p < 0.001) and increased (p < 0.05) the anxiogenic-like response of the effective dose (5 μg/mouse; i.c.v.) of histamine, respectively. In addition, co-treatment of effective doses of histamine (2.5 and 5 μg/mouse;i.c.v.) along with an effective dose of muscimol (0.12 mg/kg;i.p.) and not-effective dose of bicuculline (0.25 mg/kg; i.p.) significantly decreased OAT (p < 0.001), suggesting a likely interaction between the histaminergic and GABAergic systems on the regulation of anxiety. The results demonstrated a synergistic anxiogenic-like effect between histamine and bicuculline in mice. In conclusion, our results presented an interaction between the histaminergic and GABAergic systems on anxiolytic/anxiogenic-like behaviors in the EPM test. This article is protected by copyright. All rights reserved.
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Affiliation(s)
- Farzan Fathalizade
- Department of Physiology, Faculty of Medicine, Tehran Medical Sciences, Islamic Azad University, Tehran, Iran.,Department of Pharmacology, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Matin Baghani
- Department of Physiology, Faculty of Medicine, Tehran Medical Sciences, Islamic Azad University, Tehran, Iran.,Department of Pharmacology, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Fatemeh Khakpai
- Cognitive and Neuroscience Research Center (CNRC), Tehran Medical Sciences, Islamic Azad University, Tehran, Iran
| | - Soheila Fazli-Tabaei
- Department of Physiology, Faculty of Medicine, Tehran Medical Sciences, Islamic Azad University, Tehran, Iran
| | - Mohammad-Reza Zarrindast
- Department of Pharmacology, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran.,Iranian National Center for Addiction Studies, Tehran University of Medical Sciences, Tehran, Iran.,Department of Neuroendocrinology, Endocrinology and Metabolism Clinical Sciences Institute, Tehran University of Medical Sciences, Tehran, Iran
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Umschweif G, Greengard P, Sagi Y. The dentate gyrus in depression. Eur J Neurosci 2019; 53:39-64. [DOI: 10.1111/ejn.14640] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2019] [Revised: 11/05/2019] [Accepted: 11/28/2019] [Indexed: 12/19/2022]
Affiliation(s)
- Gali Umschweif
- Laboratory for Molecular and Cellular Neuroscience Rockefeller University New York NY USA
| | - Paul Greengard
- Laboratory for Molecular and Cellular Neuroscience Rockefeller University New York NY USA
| | - Yotam Sagi
- Laboratory for Molecular and Cellular Neuroscience Rockefeller University New York NY USA
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Deletion of asparagine endopeptidase reduces anxiety- and depressive-like behaviors and improves abilities of spatial cognition in mice. Brain Res Bull 2018; 142:147-155. [DOI: 10.1016/j.brainresbull.2018.07.010] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2018] [Revised: 07/11/2018] [Accepted: 07/13/2018] [Indexed: 12/21/2022]
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Scarante FF, Vila-Verde C, Detoni VL, Ferreira-Junior NC, Guimarães FS, Campos AC. Cannabinoid Modulation of the Stressed Hippocampus. Front Mol Neurosci 2017; 10:411. [PMID: 29311804 PMCID: PMC5742214 DOI: 10.3389/fnmol.2017.00411] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2017] [Accepted: 11/27/2017] [Indexed: 12/31/2022] Open
Abstract
Exposure to stressful situations is one of the risk factors for the precipitation of several psychiatric disorders, including Major Depressive Disorder, Posttraumatic Stress Disorder and Schizophrenia. The hippocampal formation is a forebrain structure highly associated with emotional, learning and memory processes; being particularly vulnerable to stress. Exposure to stressful stimuli leads to neuroplastic changes and imbalance between inhibitory/excitatory networks. These changes have been associated with an impaired hippocampal function. Endocannabinoids (eCB) are one of the main systems controlling both excitatory and inhibitory neurotransmission, as well as neuroplasticity within the hippocampus. Cannabinoids receptors are highly expressed in the hippocampus, and several lines of evidence suggest that facilitation of cannabinoid signaling within this brain region prevents stress-induced behavioral changes. Also, chronic stress modulates hippocampal CB1 receptors expression and endocannabinoid levels. Moreover, cannabinoids participate in mechanisms related to synaptic plasticity and adult neurogenesis. Here, we discussed the main findings supporting the involvement of hippocampal cannabinoid neurotransmission in stress-induced behavioral and neuroplastic changes.
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Affiliation(s)
- Franciele F Scarante
- Department of Pharmacology, School of Medicine of Ribeirão Preto, Centre for Interdisciplinary Research on Applied Neurosciences (NAPNA), Cannabinoid Research Institute, University of São Paulo, São Paulo, Brazil
| | - Carla Vila-Verde
- Department of Pharmacology, School of Medicine of Ribeirão Preto, Centre for Interdisciplinary Research on Applied Neurosciences (NAPNA), Cannabinoid Research Institute, University of São Paulo, São Paulo, Brazil
| | - Vinícius L Detoni
- Department of Pharmacology, School of Medicine of Ribeirão Preto, Centre for Interdisciplinary Research on Applied Neurosciences (NAPNA), Cannabinoid Research Institute, University of São Paulo, São Paulo, Brazil
| | - Nilson C Ferreira-Junior
- Department of Pharmacology, School of Medicine of Ribeirão Preto, Centre for Interdisciplinary Research on Applied Neurosciences (NAPNA), Cannabinoid Research Institute, University of São Paulo, São Paulo, Brazil
| | - Francisco S Guimarães
- Department of Pharmacology, School of Medicine of Ribeirão Preto, Centre for Interdisciplinary Research on Applied Neurosciences (NAPNA), Cannabinoid Research Institute, University of São Paulo, São Paulo, Brazil
| | - Alline C Campos
- Department of Pharmacology, School of Medicine of Ribeirão Preto, Centre for Interdisciplinary Research on Applied Neurosciences (NAPNA), Cannabinoid Research Institute, University of São Paulo, São Paulo, Brazil
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Gammoh O, Mayyas F, Darwish Elhajji F. Chlorpheniramine and escitalopram: Similar antidepressant and nitric oxide lowering roles in a mouse model of anxiety. Biomed Rep 2017; 6:675-680. [PMID: 28584640 DOI: 10.3892/br.2017.901] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2017] [Accepted: 04/10/2017] [Indexed: 01/01/2023] Open
Abstract
There is a crosstalk between mood disorders and oxidative stress. Chlorpheniramine (CPA), a first generation antihistamine, is hypothesized to have an anxiolytic role at high doses; however, its antidepressant and antioxidant roles have not previously been investigated. The aim of the current study was to evaluate the antidepressant and anxiolytic effects of CPA treatment in association with nitric oxide (NO) and super oxide dismutase (SOD) activity in a mouse model of anxiety. BALB/c mice were divided into unstressed (naïve), control, and CPA- (0.5 mg/kg) and escitalopram- (ESC; 10 mg/kg) treated groups for 3 weeks. Subsequently, they were immobilized for 6 h and subjected to behavioural paradigms as follows: The open field test, the elevated plus maze (EPM) and the forced swim test to investigate motor function, anxiety and depression, respectively. The mice were sacrificed and serum was obtained to detect NO and SOD activity. Compared with the control group, the CPA-treated group demonstrated an antidepressant effect similar to that of the ESC-treated group. In addition, CPA prevented stress-induced NO without affecting SOD activity. CPA did not improve anxiety-like behaviour in the EPM, nor did it improve stress-induced locomotion and rearing, as demonstrated by the OFT. Thus, to the best of our knowledge, this is the first study to evaluate the antidepressant role of CPA in association with NO metabolism. However, further studies are required to elucidate the underlying mechanism.
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Affiliation(s)
- Omar Gammoh
- Department of Pharmacy, American University of Madaba, Amman 11821, Jordan
| | - Fadia Mayyas
- Department of Clinical Pharmacy, Faculty of Pharmacy, Jordan University of Science and Technology, Irbid 22110, Jordan
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Nasehi M, Kamali-Dolatabadi L, Torabi-Nami M, Zarrindast MR. Possible involvement of the CA1 GABAA receptors upon acquisition and expression of the ACPA-induced place preference in mice. Physiol Behav 2016; 161:155-165. [DOI: 10.1016/j.physbeh.2016.04.021] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2015] [Revised: 04/12/2016] [Accepted: 04/12/2016] [Indexed: 12/12/2022]
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Li Z, Hao S, Yin H, Gao J, Yang Z. Autophagy ameliorates cognitive impairment through activation of PVT1 and apoptosis in diabetes mice. Behav Brain Res 2016; 305:265-77. [PMID: 26971628 DOI: 10.1016/j.bbr.2016.03.023] [Citation(s) in RCA: 58] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2016] [Revised: 02/24/2016] [Accepted: 03/09/2016] [Indexed: 01/19/2023]
Abstract
The underlying mechanisms of cognitive impairment in diabetes remain incompletely characterized. Here we show that the autophagic inhibition by 3-methyladenine (3-MA) aggravates cognitive impairment in streptozotocin-induced diabetic mice, including exacerbation of anxiety-like behaviors and aggravation in spatial learning and memory, especially the spatial reversal memory. Further neuronal function identification confirmed that both long term potentiation (LTP) and depotentiation (DPT) were exacerbated by autophagic inhibition in diabetic mice, which indicating impairment of synaptic plasticity. However, no significant change of pair-pulse facilitation (PPF) was recorded in diabetic mice with autophagic suppression compared with the diabetic mice, which indicated that presynaptic function was not affected by autophagic inhibition in diabetes. Subsequent hippocampal neuronal cell death analysis showed that the apoptotic cell death, but not the regulated necrosis, significantly increased in autophagic suppression of diabetic mice. Finally, molecular mechanism that may lead to cell death was identified. The long non-coding RNA PVT1 (plasmacytoma variant translocation 1) expression was analyzed, and data revealed that PVT1 was decreased significantly by 3-MA in diabetes. These findings show that PVT1-mediated autophagy may protect hippocampal neurons from impairment of synaptic plasticity and apoptosis, and then ameliorates cognitive impairment in diabetes. These intriguing findings will help pave the way for exciting functional studies of autophagy in cognitive impairment and diabetes that may alter the existing paradigms.
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Affiliation(s)
- Zhigui Li
- College of Medicine, State Key Laboratory of Medicinal Chemical Biology, Tianjin Key Laboratory of Animal Models and Degenerative Neurological Diseases, Nankai University, Tianjin 300071, China
| | - Shuang Hao
- College of Medicine, State Key Laboratory of Medicinal Chemical Biology, Tianjin Key Laboratory of Animal Models and Degenerative Neurological Diseases, Nankai University, Tianjin 300071, China
| | - Hongqiang Yin
- College of Medicine, State Key Laboratory of Medicinal Chemical Biology, Tianjin Key Laboratory of Animal Models and Degenerative Neurological Diseases, Nankai University, Tianjin 300071, China
| | - Jing Gao
- College of Medicine, State Key Laboratory of Medicinal Chemical Biology, Tianjin Key Laboratory of Animal Models and Degenerative Neurological Diseases, Nankai University, Tianjin 300071, China
| | - Zhuo Yang
- College of Medicine, State Key Laboratory of Medicinal Chemical Biology, Tianjin Key Laboratory of Animal Models and Degenerative Neurological Diseases, Nankai University, Tianjin 300071, China.
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Nasehi M, Kafi F, Khakpai F, Zarrindast MR. Involvement of the serotonergic system of the ventral hippocampus (CA3) on amnesia induced by ACPA in mice. Behav Brain Res 2015; 286:356-63. [DOI: 10.1016/j.bbr.2015.03.011] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2014] [Revised: 02/27/2015] [Accepted: 03/04/2015] [Indexed: 10/23/2022]
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Nasehi M, Tabatabaie M, Khakpai F, Zarrindast MR. The effects of CA1 5HT4 receptors in MK801-induced amnesia and hyperlocomotion. Neurosci Lett 2015; 587:73-8. [DOI: 10.1016/j.neulet.2014.12.019] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2014] [Revised: 12/09/2014] [Accepted: 12/11/2014] [Indexed: 12/31/2022]
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Dolu N, Acer H, Kara AY. Investigation of Dose-Related Effects of Carnosine on Anxiety with Sympathetic Skin Response and T-maze. ACTA MEDICA (HRADEC KRÁLOVÉ) 2015; 57:112-8. [DOI: 10.14712/18059694.2014.49] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
Carnosine is a dipeptide formed of the amino acids β-alanine and histidine. Only a limited number of studies have examined the effects of carnosine on sympathetic nerve activation and anxiety. The present study was undertaken to determine the dose-related effects of carnosine on anxiety in the elevated T-maze test (ETM) with electrodermal activity (EDA). Carnosine was injected in three groups of rats with doses of 10 (low dose), 100 (medium dose) and 1000 (high dose) mg/kg i.p. Physiological saline was injected in the sham group. The anxiety scores of the rats were measured with ETM 20 minutes after injection. Then, SCL was measured. The decreased number of entries into the open arm (NEOA), the percentage of time spent in the open arm (% TSOA) and higher EDA [shown by skin conductance level (SCL)] indicate higher anxiety. The NEOA and % TSOA were lower in the high-dose group than in the other groups. SCL was lower in the medium-dose carnosine group than in the high-dose carnosine and sham groups. SCL was higher in the high-dose group than in the medium-dose and sham groups. Our results suggest that high-dose carnosine produced anxiety-like effects as assessed in the SCL and ETM. Medium-dose carnosine acted as an anxiolytic. The anxiety-related responses of carnosine depend on its dose-related effect.
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12
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Suggesting a possible role of CA1 histaminergic system in harmane-induced amnesia. Neurosci Lett 2013; 556:5-9. [DOI: 10.1016/j.neulet.2013.09.066] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2013] [Revised: 09/21/2013] [Accepted: 09/27/2013] [Indexed: 11/21/2022]
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Ahmadi H, Nasehi M, Rostami P, Zarrindast MR. Involvement of the nucleus accumbens shell dopaminergic system in prelimbic NMDA-induced anxiolytic-like behaviors. Neuropharmacology 2013; 71:112-23. [DOI: 10.1016/j.neuropharm.2013.03.017] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2012] [Revised: 03/21/2013] [Accepted: 03/23/2013] [Indexed: 01/21/2023]
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14
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Piri M, Ayazi E, Zarrindast MR. Involvement of the dorsal hippocampal dopamine D2 receptors in histamine-induced anxiogenic-like effects in mice. Neurosci Lett 2013; 550:139-44. [PMID: 23872092 DOI: 10.1016/j.neulet.2013.07.009] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2013] [Revised: 06/26/2013] [Accepted: 07/02/2013] [Indexed: 11/26/2022]
Abstract
Anxiety-related behaviors increase histamine and dopamine release in the brain. On the other hand, central histamine counteracts reward and reinforcement processes mediated by the mesolimbic dopamine system. We investigated the effects of the histaminergic system and dopamine D2 receptors agents and their interactions on anxiety-related behaviors using the elevated plus-maze (EPM). The intra-hippocampal (Intra-CA1) microinjection of histamine (10 μg/mouse) decreased the percentage of open arm time (%OAT) and open arm entries (%OAE) but not the locomotor activity, indicating an anxiogenic-like response. Quinpirole (0.5 and 2 μg/mouse) or sulpiride (0.3 and 1 μg/mouse) when injected into the dorsal hippocampus also induced anxiety-like behavior, however, the drugs reversed the anxiogenic response induced by the effective dose of histamine (10 μg/mouse). Taken together and under the present experimental design, our results indicate that activation of the dorsal hippocampal histaminergic receptors causes anxiety-like behaviors altered by dopamine D2 receptor agonist and antagonist. Histamine can decrease dopaminergic tone in the dorsal hippocampus through decreasing the endogenous dopamine release, whereas quinpirole does the same via the postsynaptic DA receptors' activation. Sulpiride however renders the same effect through autoreceptors' blockade and potentiated dopamine transmission. Thus, quinpirole and sulpiride seem to compensate the effects of the intra-CA1 injection of exogenous histamine, and tend to exert anxiolytic effects in the presence of histamine.
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Affiliation(s)
- Morteza Piri
- Department of Biology, Faculty of Basic Sciences, Islamic Azad University, Ardabil Branch, Ardabil, Iran
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Serafim KR, Kishi MS, Canto-de-Souza A, Mattioli R. H₁ but not H₂ histamine antagonist receptors mediate anxiety-related behaviors and emotional memory deficit in mice subjected to elevated plus-maze testing. Braz J Med Biol Res 2013; 46:440-6. [PMID: 23598647 PMCID: PMC3854398 DOI: 10.1590/1414-431x20132770] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2012] [Accepted: 02/08/2013] [Indexed: 11/22/2022] Open
Abstract
This study investigated the role of H1 and H2 receptors in
anxiety and the retrieval of emotional memory using a Trial 1/Trial 2 (T1/T2)
protocol in an elevated plus-maze (EPM). Tests were performed on 2 consecutive
days, designated T1 and T2. Before T1, the mice received intraperitoneal
injections of saline (SAL), 20 mg/kg zolantidine (ZOL, an H2
receptor antagonist), or 8.0 or 16 mg/kg chlorpheniramine (CPA, an
H1 receptor antagonist). After 40 min, they were subjected
to the EPM test. In T2 (24 h later), each group was subdivided into two
additional groups, and the animals from each group were re-injected with SAL or
one of the drugs. In T1, the Student t-test showed no
difference between the SAL and ZOL or 8 mg/kg CPA groups with respect to
the percentages of open arm entries (%OAE) and open arm time
(%OAT). However, administration of CPA at the highest dose of
16 mg/kg decreased %OAE and %OAT, but not locomotor
activity, indicating anxiogenic-like behavior. Emotional memory, as revealed by
a reduction in open arm exploration between the two trials, was observed in all
experimental groups, indicating that ZOL and 8 mg/kg CPA did not affect
emotional memory, whereas CPA at the highest dose affected acquisition and
consolidation, but not retrieval of memory. Taken together, these results
suggest that H1 receptor, but not H2, is implicated in
anxiety-like behavior and in emotional memory acquisition and consolidation
deficits in mice subjected to EPM testing.
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Affiliation(s)
- K R Serafim
- Laboratório de Neurociências, Departamento de Fisioterapia, Centro de Ciências Biológicas e da Saúde, Universidade Federal de São Carlos, São Carlos, SP, Brasil
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Yousefi B, Farjad M, Nasehi M, Zarrindast MR. Involvement of the CA1 GABAA receptors in ACPA-induced impairment of spatial and non-spatial novelty detection in mice. Neurobiol Learn Mem 2013; 100:32-40. [DOI: 10.1016/j.nlm.2012.12.001] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2012] [Revised: 11/24/2012] [Accepted: 12/02/2012] [Indexed: 10/27/2022]
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Piri M, Nasehi M, Shahab Z, Zarrindast MR. The effects of nicotine on nitric oxide induced anxiogenic-like behaviors in the dorsal hippocampus. Neurosci Lett 2012; 528:93-8. [DOI: 10.1016/j.neulet.2012.08.074] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2012] [Revised: 08/02/2012] [Accepted: 08/10/2012] [Indexed: 10/27/2022]
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Influence of nitric oxide agents in the dorsal hippocampus of mice on anxiogenic-like effect induced by histamine. Pharmacol Biochem Behav 2012; 102:391-9. [DOI: 10.1016/j.pbb.2012.06.004] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/10/2011] [Revised: 05/22/2012] [Accepted: 06/04/2012] [Indexed: 11/19/2022]
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Zarrindast MR, Piri M, Nasehi M, Ebrahimi-Ghiri M. Nitric oxide in the nucleus accumbens is involved in retrieval of inhibitory avoidance memory by nicotine. Pharmacol Biochem Behav 2012; 101:166-73. [DOI: 10.1016/j.pbb.2011.11.010] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/04/2011] [Revised: 11/09/2011] [Accepted: 11/15/2011] [Indexed: 12/22/2022]
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Moreira FA, Aguiar DC, Resstel LB, Lisboa SF, Campos AC, Gomes FV, Guimarães FS. Neuroanatomical substrates involved in cannabinoid modulation of defensive responses. J Psychopharmacol 2012; 26:40-55. [PMID: 21616976 DOI: 10.1177/0269881111400651] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Administration of Cannabis sativa derivatives causes anxiolytic or anxiogenic effects in humans and laboratory animals, depending on the specific compound and dosage used. In agreement with these findings, several studies in the last decade have indicated that the endocannabinoid system modulates neuronal activity in areas involved in defensive responses. The mechanisms of these effects, however, are still not clear. The present review summarizes recent data suggesting that they involve modulation of glutamate and GABA-mediated neurotransmission in brain sites such as the medial prefrontal cortex, amygdaloid complex, bed nucleus of the stria terminalis, hippocampus and dorsal periaqueductal gray. Moreover, we also discuss results indicating that, in these regions, the endocannabinoid system could be particularly engaged by highly stressful situations.
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Affiliation(s)
- F A Moreira
- Department of Pharmacology, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil
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Rudenko V, Rafiuddin A, Leheste JR, Friedman LK. Inverse relationship of cannabimimetic (R+)WIN 55, 212 on behavior and seizure threshold during the juvenile period. Pharmacol Biochem Behav 2011; 100:474-84. [PMID: 22019959 DOI: 10.1016/j.pbb.2011.10.005] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/15/2011] [Revised: 09/26/2011] [Accepted: 10/02/2011] [Indexed: 11/28/2022]
Abstract
Cannabinoids have anti-convulsant effects in both in vivo and in vitro models of status epilepticus. Since the development of spontaneous seizures and neuronal vulnerability are age-dependent, we hypothesized that the anti-convulsant effects of cannabimimetics are also age-dependent. We administered a single injection of varied doses of (R+)WIN 55,212 (0.5, 1, 5 mg/kg) to postnatal (P) day 20 rats 90 min prior to induction of kainate (KA)-induced status epilepticus. The highest dose of (R+)WIN 55,212 (5 mg/kg) resulted in rapid onset of behavioral stupor, loss of balance, stiffening and immobility while standing on hind legs or laying flat in prone position; lower doses had minimal or no behavioral effect. After KA administration, seizure scores and electroencephalography (EEG) recordings were inversely related to (R+)WIN 55,212 dosage whereby higher doses were associated with high seizures scores and synchronous epileptiform activity and low doses with low seizure scores and diminished spiking in the EEG. Immunohistochemistry revealed a dose-dependent reduction in CB1 receptor expression with increasing concentrations of (R+)WIN 55,212 in presence or absence of KA seizures. Nissl and NeuN staining showed hippocampal injury was attenuated only when seizures were mild following low doses of WIN 55,212 (0.5, 1 mg/kg), consistent with the level of CB1 expression. Since low doses abolished seizures without psychotropic side-effects further study may facilitate a groundbreaking cannabamimetic therapeutic strategy to treat early-life seizures. Higher doses had adverse effects on behavior and failed to prevent seizures and protect CA1 neurons possibly due to inactivation or loss of CB1 receptors.
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Affiliation(s)
- V Rudenko
- New York College of Osteopathic Medicine, Old Westbury, NY 11568, USA
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Cross state-dependency of learning between WIN55, 212-2 and scopolamine in rat dorsal hippocampus. Neurosci Lett 2011; 491:227-31. [DOI: 10.1016/j.neulet.2011.01.056] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2010] [Revised: 12/14/2010] [Accepted: 01/23/2011] [Indexed: 11/19/2022]
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Zarrindast MR, Nasehi M, Khansari M, Bananej M. Influence of nitric oxide agents in the rat amygdala on anxiogenic-like effect induced by histamine. Neurosci Lett 2011; 489:38-42. [DOI: 10.1016/j.neulet.2010.11.062] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2010] [Revised: 11/14/2010] [Accepted: 11/23/2010] [Indexed: 11/30/2022]
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