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Bommaraju S, Dhokne MD, Arun EV, Srinivasan K, Sharma SS, Datusalia AK. An insight into crosstalk among multiple signalling pathways contributing to the pathophysiology of PTSD and depressive disorders. Prog Neuropsychopharmacol Biol Psychiatry 2024; 131:110943. [PMID: 38228244 DOI: 10.1016/j.pnpbp.2024.110943] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/05/2023] [Revised: 01/08/2024] [Accepted: 01/10/2024] [Indexed: 01/18/2024]
Abstract
Post-traumatic stress disorder (PTSD) and depressive disorders represent two significant mental health challenges with substantial global prevalence. These are debilitating conditions characterized by persistent, often comorbid, symptoms that severely impact an individual's quality of life. Both PTSD and depressive disorders are often precipitated by exposure to traumatic events or chronic stress. The profound impact of PTSD and depressive disorders on individuals and society necessitates a comprehensive exploration of their shared and distinct pathophysiological features. Although the activation of the stress system is essential for maintaining homeostasis, the ability to recover from it after diminishing the threat stimulus is also equally important. However, little is known about the main reasons for individuals' differential susceptibility to external stressful stimuli. The solution to this question can be found by delving into the interplay of stress with the cognitive and emotional processing of traumatic incidents at the molecular level. Evidence suggests that dysregulation in these signalling cascades may contribute to the persistence and severity of PTSD and depressive symptoms. The treatment strategies available for this disorder are antidepressants, which have shown good efficiency in normalizing symptom severity; however, their efficacy is limited in most individuals. This calls for the exploration and development of innovative medications to address the treatment of PTSD. This review delves into the intricate crosstalk among multiple signalling pathways implicated in the development and manifestation of these mental health conditions. By unravelling the complexities of crosstalk among multiple signalling pathways, this review aims to contribute to the broader knowledge base, providing insights that could inform the development of targeted interventions for individuals grappling with the challenges of PTSD and depressive disorders.
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Affiliation(s)
- Sumadhura Bommaraju
- Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education and Research (NIPER), Raebareli, Uttar Pradesh (UP) 226002, India
| | - Mrunali D Dhokne
- Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education and Research (NIPER), Raebareli, Uttar Pradesh (UP) 226002, India
| | - E V Arun
- Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education and Research (NIPER), Raebareli, Uttar Pradesh (UP) 226002, India
| | - Krishnamoorthy Srinivasan
- Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education and Research (NIPER), SAS Nagar, Punjab 160062, India
| | - Shyam Sunder Sharma
- Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education and Research (NIPER), SAS Nagar, Punjab 160062, India
| | - Ashok Kumar Datusalia
- Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education and Research (NIPER), Raebareli, Uttar Pradesh (UP) 226002, India; Department of Regulatory Toxicology, National Institute of Pharmaceutical Education and Research (NIPER) Raebareli, Uttar Pradesh (UP) 226002, India.
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Vieira MPS, Silva OBS, Souza GF, Cavalcante GTS, Souza FMA, Gitaí DLG, Castro OW, Nicácio DCSP, Cofré AHR, Amorós MA, Silva AV, Neto GJDS, Silva AHQ, Correia WBZGB, Junkes JA, Duarte FS, Guedes JS, Nogueira FCS, Meneghetti MR, Duzzioni M. First evaluation of the anxiolytic-like effects of a bromazepam‑palladium complex in mice. J Inorg Biochem 2022; 237:112012. [PMID: 36162209 DOI: 10.1016/j.jinorgbio.2022.112012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2022] [Revised: 09/09/2022] [Accepted: 09/16/2022] [Indexed: 01/18/2023]
Abstract
A significant fraction of patients are affected by persistent fear and anxiety. Currently, there are several anxiolytic drug options, however their clinical outcomes do not fully manage the symptoms. Here, we evaluated the effects of a bromazepam‑palladium derivative [2-{(7-bromo-2-oxo-1,3-dihydro-2H-1,4-benzodiazepin-5-il)pyridinyl-κ2-N,N}chloropalladium(II)], [(BMZ)PdCl2], on fear/anxiety and memory-related behavior in mice. For this, female Swiss mice were treated intraperitoneally (i.p.) with saline (NaCl 0.9%) or [(BMZ)PdCl2] (0.5, 5.0, or 50 μg/kg). After 30 min, different tests were performed to evaluate anxiety, locomotion, and memory. We also evaluated the acute toxicity of [(BMZ)PdCl2] using a cell viability assay (neutral red uptake assay), and whether the drugs mechanism of action involves the γ-aminobutyric acid type A (GABAA) receptor complex by pre-treating animals with flumazenil (1.0 mg/kg, i.p., a competitive antagonist of GABAA-binding site). Our results demonstrate that [(BMZ)PdCl2] induces an anxiolytic-like phenotype in the elevated plus-maze test and that this effect can be blocked by flumazenil. Furthermore, there were no behavioral alterations induced by [(BMZ)PdCl2], as evaluated in the light-dark box, open field, and step-down passive avoidance tests. In the acute toxicity assay, [(BMZ)PdCl2] presented IC50 and LD50 values of 218 ± 60 μg/mL and 780 ± 80 mg/kg, respectively, and GSH category 4. Taken together, our results show that the anxiolytic-like effect of acute treatment with [(BMZ)PdCl2] occurs through the modulation of the benzodiazepine site in the GABAA receptor complex. Moreover, we show indications that [(BMZ)PdCl2] does not promote sedation and amnesia and presents the same toxicity as the bromazepam prototype.
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Affiliation(s)
- Mirella P S Vieira
- Instituto de Ciências Biológicas e da Saúde, Universidade Federal de Alagoas, Avenida Lourival Melo Mota, S/N, Cidade Universitária, Maceió, Alagoas 57072-900, Brazil
| | - Ozileudiane B S Silva
- Instituto de Ciências Biológicas e da Saúde, Universidade Federal de Alagoas, Avenida Lourival Melo Mota, S/N, Cidade Universitária, Maceió, Alagoas 57072-900, Brazil
| | - Gabriela F Souza
- Instituto de Ciências Biológicas e da Saúde, Universidade Federal de Alagoas, Avenida Lourival Melo Mota, S/N, Cidade Universitária, Maceió, Alagoas 57072-900, Brazil
| | - Gabriela T S Cavalcante
- Instituto de Ciências Biológicas e da Saúde, Universidade Federal de Alagoas, Avenida Lourival Melo Mota, S/N, Cidade Universitária, Maceió, Alagoas 57072-900, Brazil
| | - Fernanda M A Souza
- Instituto de Ciências Biológicas e da Saúde, Universidade Federal de Alagoas, Avenida Lourival Melo Mota, S/N, Cidade Universitária, Maceió, Alagoas 57072-900, Brazil
| | - Daniel L G Gitaí
- Instituto de Ciências Biológicas e da Saúde, Universidade Federal de Alagoas, Avenida Lourival Melo Mota, S/N, Cidade Universitária, Maceió, Alagoas 57072-900, Brazil
| | - Olagide W Castro
- Instituto de Ciências Biológicas e da Saúde, Universidade Federal de Alagoas, Avenida Lourival Melo Mota, S/N, Cidade Universitária, Maceió, Alagoas 57072-900, Brazil
| | - Dannyele C S P Nicácio
- Instituto de Ciências Biológicas e da Saúde, Universidade Federal de Alagoas, Avenida Lourival Melo Mota, S/N, Cidade Universitária, Maceió, Alagoas 57072-900, Brazil
| | - Axel H R Cofré
- Instituto de Ciências Biológicas e da Saúde, Universidade Federal de Alagoas, Avenida Lourival Melo Mota, S/N, Cidade Universitária, Maceió, Alagoas 57072-900, Brazil
| | - Mariana A Amorós
- Instituto de Ciências Biológicas e da Saúde, Universidade Federal de Alagoas, Avenida Lourival Melo Mota, S/N, Cidade Universitária, Maceió, Alagoas 57072-900, Brazil
| | - Artur V Silva
- Grupo de Catálise e Reatividade Química, Instituto de Química e Biotecnologia, Universidade Federal de Alagoas, Avenida Lourival Melo Mota, S/N, Cidade Universitária, Maceió, Alagoas 57072-900, Brazil
| | - Geraldo José da Silva Neto
- Grupo de Catálise e Reatividade Química, Instituto de Química e Biotecnologia, Universidade Federal de Alagoas, Avenida Lourival Melo Mota, S/N, Cidade Universitária, Maceió, Alagoas 57072-900, Brazil
| | - Allysson H Q Silva
- Grupo de Catálise e Reatividade Química, Instituto de Química e Biotecnologia, Universidade Federal de Alagoas, Avenida Lourival Melo Mota, S/N, Cidade Universitária, Maceió, Alagoas 57072-900, Brazil
| | - Walleska B Z G B Correia
- Instituto de Ciências Biológicas e da Saúde, Universidade Federal de Alagoas, Avenida Lourival Melo Mota, S/N, Cidade Universitária, Maceió, Alagoas 57072-900, Brazil; Grupo de Catálise e Reatividade Química, Instituto de Química e Biotecnologia, Universidade Federal de Alagoas, Avenida Lourival Melo Mota, S/N, Cidade Universitária, Maceió, Alagoas 57072-900, Brazil
| | - Janaína A Junkes
- Instituto de Tecnologia e Pesquisa, Centro Universitário Tiradentes, Avenida Comendador Gustavo Paiva, 5017, Cruz das Almas, Maceió, Alagoas 57038-000, Brazil
| | - Filipe S Duarte
- Departamento de Fisiologia e Farmacologia, Universidade Federal de Pernambuco, Avenida Professor Moraes Rego, S/N, Cidade Universitária, Recife, Pernambuco 50670-420, Brazil
| | - Jéssica S Guedes
- Instituto de Química, Universidade Federal do Rio de Janeiro, Avenida Athos da Silveira Ramos, 149, Cidade Universitária, Rio de Janeiro, Rio de Janeiro 21941-909, Brazil
| | - Fábio C S Nogueira
- Instituto de Química, Universidade Federal do Rio de Janeiro, Avenida Athos da Silveira Ramos, 149, Cidade Universitária, Rio de Janeiro, Rio de Janeiro 21941-909, Brazil
| | - Mario R Meneghetti
- Grupo de Catálise e Reatividade Química, Instituto de Química e Biotecnologia, Universidade Federal de Alagoas, Avenida Lourival Melo Mota, S/N, Cidade Universitária, Maceió, Alagoas 57072-900, Brazil.
| | - Marcelo Duzzioni
- Instituto de Ciências Biológicas e da Saúde, Universidade Federal de Alagoas, Avenida Lourival Melo Mota, S/N, Cidade Universitária, Maceió, Alagoas 57072-900, Brazil.
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S-ketamine exerts sex- and dose-dependent anti-compulsive-like effect as monotherapy or in augmentation to fluoxetine. Eur J Pharmacol 2022; 937:175382. [DOI: 10.1016/j.ejphar.2022.175382] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2022] [Revised: 10/16/2022] [Accepted: 11/03/2022] [Indexed: 11/13/2022]
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Vázquez-León P, Miranda-Páez A, Valencia-Flores K, Sánchez-Castillo H. Defensive and Emotional Behavior Modulation by Serotonin in the Periaqueductal Gray. Cell Mol Neurobiol 2022; 43:1453-1468. [PMID: 35902460 DOI: 10.1007/s10571-022-01262-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2022] [Accepted: 07/13/2022] [Indexed: 11/26/2022]
Abstract
Serotonin 5-hydroxytryptamine (5-HT) is a key neurotransmitter for the modulation and/or regulation of numerous physiological processes and psychiatric disorders (e.g., behaviors related to anxiety, pain, aggressiveness, etc.). The periaqueductal gray matter (PAG) is considered an integrating center for active and passive defensive behaviors, and electrical stimulation of this area has been shown to evoke behavioral responses of panic, fight-flight, freezing, among others. The serotonergic activity in PAG is influenced by the activation of other brain areas such as the medial hypothalamus, paraventricular nucleus of the hypothalamus, amygdala, dorsal raphe nucleus, and ventrolateral orbital cortex. In addition, activation of other receptors within PAG (i.e., CB1, Oxytocin, µ-opioid receptor (MOR), and γ-aminobutyric acid (GABAA)) promotes serotonin release. Therefore, this review aims to document evidence suggesting that the PAG-evoked behavioral responses of anxiety, panic, fear, analgesia, and aggression are influenced by the activation of 5-HT1A and 5-HT2A/C receptors and their participation in the treatment of various mental disorders.
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Affiliation(s)
- Priscila Vázquez-León
- Neuropsychopharmacology Laboratory, Psychology School. 1er Piso Edif. B. Cub B001, National Autonomous University of Mexico, Avenida Universidad 3000, Colonia Copilco Universidad. Alcaldía de Coyoacan, Mexico City, Mexico
| | - Abraham Miranda-Páez
- Department of Physiology, National School of Biological Sciences, National Polytechnic Institute, Wilfrido Massieu esq. Manuel Stampa S/N Col. Nueva Industrial Vallejo, Gustavo A. Madero, Mexico City, CP:07738, Mexico
| | - Kenji Valencia-Flores
- Neuropsychopharmacology Laboratory, Psychology School. 1er Piso Edif. B. Cub B001, National Autonomous University of Mexico, Avenida Universidad 3000, Colonia Copilco Universidad. Alcaldía de Coyoacan, Mexico City, Mexico
| | - Hugo Sánchez-Castillo
- Neuropsychopharmacology Laboratory, Psychology School. 1er Piso Edif. B. Cub B001, National Autonomous University of Mexico, Avenida Universidad 3000, Colonia Copilco Universidad. Alcaldía de Coyoacan, Mexico City, Mexico.
- Research Unit of Psychobiology and Neurosciences (UIPyN), Psychology School, UNAM, CDMX Mexico, CP 04510, Mexico.
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Eranna SC, Panchangam RK, Kengaiah J, Adimule SP, Foro S, Sannagangaiah D. Synthesis, structural characterization, and evaluation of new peptidomimetic Schiff bases as potential antithrombotic agents. MONATSHEFTE FUR CHEMIE 2022; 153:635-650. [PMID: 35855689 PMCID: PMC9281246 DOI: 10.1007/s00706-022-02936-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/15/2022] [Accepted: 05/29/2022] [Indexed: 01/18/2023]
Abstract
New Schiff bases functionalized with amide and phenolic groups synthesized by the condensation of 2-hydroxybenzaldehyde and 2-hydroxyacetophenone with amino acid amides which in turn were prepared in two steps from N-Boc-amino acids and homoveraltrylamine through intermediate compounds N-Boc-amino acids amides. The compounds were characterized by elemental analysis, FT-IR, UV–Vis, and NMR spectroscopy. The crystal structures of three Schiff bases were determined by single crystal X-ray diffraction. There exists O–H\documentclass[12pt]{minimal}
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\begin{document}$$\cdots\uppi $$\end{document}⋯π secondary bonding interactions in these crystalline solids. The Schiff bases have been screened for anticoagulant and antiplatelet aggregation activities. All the compounds showed procoagulant activity which shortens the clotting time of citrated human plasma in both platelet-rich plasma and platelet-poor plasma except the derivatives of L-methionine which showed anticoagulant activity by prolonging the clotting time. In addition, the compounds derived from benzyl cysteine and phenylalanine showed adenosine diphosphate induced antiplatelet aggregation activity, whereas others did not show any role. Moreover, all these compounds revealed non-hemolytic activity with red blood cells.
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Corticotropin-releasing hormone 1 receptor antagonism attenuates chronic unpredictable mild stress-induced depressive-like behaviors in rats. Neuroreport 2021; 31:1-8. [PMID: 31688420 DOI: 10.1097/wnr.0000000000001331] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Hyperactivity of the hypothalamic-pituitary-adrenal axis and impairment of the central corticotropin-releasing factor system are factors in the pathogenesis of depression. Though several antagonists of the corticotropin-releasing factor 1 receptor were effective in the recognized behavioral tests for antidepressant activity, there is still little information on the potential interactions between corticotropin-releasing factor 1 receptor inhibitors and conventional antidepressant therapy. The aim of our study was to assess the influence of CP154526, a corticotropin-releasing factor 1 receptor blocker, which presented some signs of depression. Our results revealed that CP154526 (5 and 10 mg/kg) or fluoxetine (10 mg/kg) treatment notably improved the sucrose consumption, produced anti-depressive-like behavior in open-field test, as well as immobility time in forced swimming test. The levels of interleukin-6, interleukin-1β, tumor necrosis factor-α, and corticotropin-releasing hormone concentration in the serum were inhibited effectively by CP154526 or fluoxetine administration. Real-time quantitative PCR and western blot analysis showed the upregulated levels of brain-derived neurotrophic factor and growth associated protein 43 (GAP43) in the hypothalamus of the rats exposed to chronic unpredictable mild stress (CUMS), while different degrees of downregulation in their expression were detected after CP154526 (5 and 10 mg/kg) or fluoxetine (10 mg/kg) treatment, respectively. Thus, our data demonstrated that CP154526 exhibited antidepressant effect in CUMS rats, which might be mediated by decreasing the brain-derived neurotrophic factor and GAP43 expression in the hypothalamus.
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Baptista-de-Souza D, Tavares LRR, Furuya-da-Cunha EM, Carneiro de Oliveira PE, Canto-de-Souza L, Nunes-de-Souza RL, Canto-de-Souza A. Chronic Fluoxetine Impairs the Effects of 5-HT 1A and 5-HT 2C Receptors Activation in the PAG and Amygdala on Antinociception Induced by Aversive Situation in Mice. Front Pharmacol 2020; 11:260. [PMID: 32218734 PMCID: PMC7078365 DOI: 10.3389/fphar.2020.00260] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2019] [Accepted: 02/24/2020] [Indexed: 11/24/2022] Open
Abstract
Growing evidence suggests an important role of fluoxetine with serotonin 5-HT1A and 5-HT2C receptors in the modulation of emotion and nociception in brain areas such as the amygdala and periaqueductal gray (PAG). Acute fluoxetine impairs 5-HT2C (but not 5-HT1A) receptor activation in the amygdaloid complex. Given that fluoxetine produces its clinical therapeutic effects only when given chronically, this study investigated the effects of chronic treatment with fluoxetine on the effects produced by 5-HT1A or 5-HT2C receptors activation in the amygdala or PAG on fear-induced antinociception. We recorded the effects of chronic fluoxetine on serotonin and its metabolite 5-hydroxyindoleacetic acid (5-HIAA) levels as well as serotonin turnover; 5-HT1A and 5-HT2C receptor protein levels in the amygdala and PAG. Also, we evaluated the effects of chronic fluoxetine combined with intra-amygdala or intra-PAG injection of MK-212 (a 5-HT2C agonist; 0.63 nmol) or 8-OH-DPAT (a 5-HT1A agonist; 10 nmol) on the antinociceptive response in mice confined in the open arm of the elevated plus-maze (EPM). Nociception was assessed with the writhing test induced by intraperitoneal injection of 0.6% acetic acid. Results showed that fluoxetine (20 mg/kg, s.c.) enhanced the open-arm induced antinociception (OAA) and reduced the number of writhes in mice confined in the enclosed arm, featuring an analgesic effect. In addition, fluoxetine increased the expression of 5-HT2C receptors and 5-HT levels whereas reduced its turnover in the amygdala. While fluoxetine did not change 5-HT and 5-HIAA levels, and its turnover in the PAG, it up-regulated 5HT1A and 5-HT2C receptors in this midbrain area. Chronic fluoxetine (5.0 mg/Kg, an intrinsically inactive dose on nociception) antagonized the enhancement of OAA produced by intra-amygdala or intra-PAG injection of MK-212. Fluoxetine also impaired the attenuation of OAA induced by intra-amygdala injection of 8-OH-DPAT and totally prevented OAA in mice that received intra-PAG 8-OH-DPAT. These results suggest that (i) 5-HT may facilitate nociception and intensify OAA, acting at amygdala 5-HT1A and 5-HT2C receptors, respectively, and (ii) fluoxetine modulates the OAA through activation of 5-HT2C receptors within the PAG. These findings indicate that chronic fluoxetine impairs the effects of 5-HT1A and 5-HT2C receptors activation in the amygdala and PAG on fear-induced antinociception in mice.
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Affiliation(s)
- Daniela Baptista-de-Souza
- Department of Psychology, Federal University of São Carlos-UFSCar, São Carlos, Brazil.,Joint Graduate Program in Physiological Sciences, UFSCar/UNESP, São Carlos, Brazil.,Institute of Neuroscience and Behavior, Ribeirão Preto, Brazil
| | - Lígia Renata Rodrigues Tavares
- Department of Psychology, Federal University of São Carlos-UFSCar, São Carlos, Brazil.,Joint Graduate Program in Physiological Sciences, UFSCar/UNESP, São Carlos, Brazil
| | - Elke Mayumi Furuya-da-Cunha
- Department of Psychology, Federal University of São Carlos-UFSCar, São Carlos, Brazil.,Joint Graduate Program in Physiological Sciences, UFSCar/UNESP, São Carlos, Brazil
| | - Paulo Eduardo Carneiro de Oliveira
- Department of Psychology, Federal University of São Carlos-UFSCar, São Carlos, Brazil.,Joint Graduate Program in Physiological Sciences, UFSCar/UNESP, São Carlos, Brazil
| | - Lucas Canto-de-Souza
- Institute of Neuroscience and Behavior, Ribeirão Preto, Brazil.,Laboratory of Pharmacology, School of Pharmaceutical Sciences, Univ. Estadual Paulista - UNESP, Araraquara, Brazil
| | - Ricardo Luiz Nunes-de-Souza
- Joint Graduate Program in Physiological Sciences, UFSCar/UNESP, São Carlos, Brazil.,Institute of Neuroscience and Behavior, Ribeirão Preto, Brazil.,Laboratory of Pharmacology, School of Pharmaceutical Sciences, Univ. Estadual Paulista - UNESP, Araraquara, Brazil
| | - Azair Canto-de-Souza
- Department of Psychology, Federal University of São Carlos-UFSCar, São Carlos, Brazil.,Joint Graduate Program in Physiological Sciences, UFSCar/UNESP, São Carlos, Brazil.,Institute of Neuroscience and Behavior, Ribeirão Preto, Brazil.,Graduate Program in Psychology UFSCar, São Carlos, Brazil
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Depoortère R, Bardin L, Varney MA, Newman-Tancredi A. Serotonin 5-HT 1A Receptor Biased Agonists Display Differential Anxiolytic Activity in a Rat Social Interaction Model. ACS Chem Neurosci 2019; 10:3101-3107. [PMID: 30929419 DOI: 10.1021/acschemneuro.8b00661] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
Abstract
When placed in an unfamiliar and brightly lit open-field, two adult male rats that have not previously interacted display a low level of social interaction (SI) attributed to an anxiety-like state. The SI test has therefore been used to explore anxiolytic/antistress activity. Here, we investigated the effects of serotonin 5-HT1A receptor agonists displaying various activity profiles, i.e. partial vs full agonist efficacy and pre- versus postsynaptic 5-HT1A receptor preferential activation by "biased agonists". Adult male Sprague-Dawley rats were housed singly before starting the social interaction session. At 30 min before being placed in an open-field, both rats of the dyad were injected (i.p or s.c.) with either vehicle, diazepam (as a reference compound), or one of six 5-HT1A receptor agonists: NLX-101 (a.k.a. F15599), F13714, S15535, flesinoxan, 8-OH-DPAT, and buspirone. Time spent in SI (following, sniffing, playing) was recorded for 10 min. Time spent in SI was inversely correlated with light intensity, with values dropping nearly by half (212.6 ± 18.8 vs 113.7 ± 7.0 s) between 10 and 300 lx (measured at floor level). Under the high light intensity conditions (300 lx), diazepam showed a bell-shaped curve, significantly increasing SI (78% increase in interaction time above control) at 1 mg/kg i.p. only. In the case of 5-HT1A receptor ligands, full agonists, whether nonpreferential (flesinoxan, (±)8-OH-DPAT) or preferential for presynaptic receptors (F13714), showed the strongest activity in this model. The preferential presynaptic receptor partial agonist, S15535, was also active over a wide dose-range, although with lower efficacy than F13714. In contrast, NLX-101, a high-efficacy biased agonist that preferentially activates postsynaptic 5-HT1A receptors, exhibited little activity. The clinical anxiolytic, buspirone, showed a marked effect likely due to its partial agonist activity at 5-HT1A presynaptic receptors. These data support the hypothesis that enhancement of SI in this model is mediated by preferential agonist activation of presynaptic 5-HT1A receptors, and confirm previous studies using local microinjections of (±)8-OH-DPAT. They further support the utility of noninvasive administration of biased agonists for exploring the activity of 5-HT1A receptor subpopulations.
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Lingford-Hughes A, Potokar J, Nutt D. Treating anxiety complicated by substance misuse. ACTA ACUST UNITED AC 2018. [DOI: 10.1192/apt.8.2.107] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
The relationship between anxiety disorders and substance misuse is intimate. Here we concentrate on alcohol, although for completeness we also briefly mention other substances taken for anxiety relief or that cause anxiety.
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10
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Crassifoside H improve the depressive-like behavior of rats under chronic unpredictable mild stress: Possible involved mechanisms. Brain Res Bull 2017; 135:77-84. [DOI: 10.1016/j.brainresbull.2017.09.015] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2017] [Revised: 08/27/2017] [Accepted: 09/28/2017] [Indexed: 02/06/2023]
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Cavalcante GIT, Chaves Filho AJM, Linhares MI, de Carvalho Lima CN, Venâncio ET, Rios ERV, de Souza FCF, Vasconcelos SMM, Macêdo D, de França Fonteles MM. HIV antiretroviral drug Efavirenz induces anxiety-like and depression-like behavior in rats: evaluation of neurotransmitter alterations in the striatum. Eur J Pharmacol 2017; 799:7-15. [DOI: 10.1016/j.ejphar.2017.02.009] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2016] [Revised: 02/07/2017] [Accepted: 02/07/2017] [Indexed: 01/11/2023]
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Nikmahzar E, Jahanshahi M, Ghaemi A, Naseri GR, Moharreri AR, Lotfinia AA. Hippocampal serotonin-2A receptor-immunoreactive neurons density increases after testosterone therapy in the gonadectomized male mice. Anat Cell Biol 2016; 49:259-272. [PMID: 28127501 PMCID: PMC5266105 DOI: 10.5115/acb.2016.49.4.259] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2016] [Revised: 10/06/2016] [Accepted: 12/09/2016] [Indexed: 12/15/2022] Open
Abstract
The change of steroid levels may also exert different modulatory effects on the number and class of serotonin receptors present in the plasma membrane. The effects of chronic treatment of testosterone for anxiety were examined and expression of 5-HT2A serotonergic receptor, neuron, astrocyte, and dark neuron density in the hippocampus of gonadectomized male mice was determined. Thirty-six adult male NMRI mice were randomly divided into six groups: intact-no testosterone treatment (No T), gonadectomy (GDX)-No T, GDX-Vehicle, GDX-6.25 mg/kg testosterone (T), GDX-12.5 mg/kg T, and GDX-25 mg/kg T. Anxiety-related behavior was evaluated using elevated plus maze apparatus. The animals were anesthetized after 48 hours after behavioral testing, and decapitated and micron slices were prepared for immunohistochemical as well as histopathological assessment. Subcutaneous injection of testosterone (25 mg/kg) may induce anxiogenic-like behavior in male mice. In addition, immunohistochemical data reveal reduced expression of 5-HT2A serotonergic receptor after gonadectomy in all areas of the hippocampus. However, treatment with testosterone could increase the mean number of dark neurons as well as immunoreactive neurons in CA1 and CA3 area, dose dependently. The density of 5-HT2A receptor-immunoreactive neurons may play a crucial role in the induction of anxiety like behavior. As reduction in such receptor expression have shown to significantly enhance anxiety behaviors. However, replacement of testosterone dose dependently enhances the number of 5-HT2A receptor-immunoreactive neurons and interestingly also reduced anxiety like behaviors.
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Affiliation(s)
- Emsehgol Nikmahzar
- Neuroscience Research Center, Faculty of Medicine, Golestan University of Medical Sciences, Gorgan, Iran
| | - Mehrdad Jahanshahi
- Department of Anatomy, Neuroscience Research Center, Faculty of Medicine, Golestan University of Medical Sciences, Gorgan, Iran
| | - Amir Ghaemi
- Shefa Neuroscience Research Center, Tehran, Iran
| | - Gholam Reza Naseri
- Department of Anatomy, Faculty of Medicine, Golestan University of Medical Sciences, Gorgan, Iran
| | - Ali Reza Moharreri
- Department of Anatomy, Faculty of Medicine, Golestan University of Medical Sciences, Gorgan, Iran
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Sawantdesai NS, Kale PP, Savai J. Evaluation of anxiolytic effects of aripiprazole and hydroxyzine as a combination in mice. J Basic Clin Pharm 2016; 7:97-104. [PMID: 27999468 PMCID: PMC5153890 DOI: 10.4103/0976-0105.189429] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Abstract
Context: Anxiety disorders are chronic, common, and often comorbid. There is an unmet need in its treatment. Aripiprazole and hydroxyzine are well-known therapeutic options used as monotherapy in clinics. They have different mechanisms and site of actions. Aim: The objective of the present study was to evaluate the anxiolytic effect of aripiprazole and hydroxyzine in combination. Materials and Methods: Swiss albino mice (male) received treatment of 5% of Tween 80 in 0.9% saline (10 ml/kg; control group), “aripiprazole alone” (1 mg/kg), “hydroxyzine alone” (3 mg/kg), and aripiprazole (0.5 mg/kg) + hydroxyzine (1.5 mg/kg) through the intraperitoneal route. Results: The in vivo outcomes (elevated plus maze, light/dark transition, and marble burying tests) of hydroxyzine monotherapy-treated group showed a significant anxiolytic activity. The combination-treated group was found to be better than control and aripiprazole-treated groups. The combination-treated group showed a significant increase in the level of serotonin in different brain regions as compared to aripiprazole-treated group but not better than the hydroxyzine group. The in vitro results were in compliance with the in vivo results. The combinational approach was found to be beneficial in anxiolytic treatment as compared to aripiprazole monotherapy. However, hydroxyzine showed better anxiolytic activity when compared to control, aripiprazole monotherapy, and combination groups. Conclusions: The anxiolytic effect of combination-treated group was found to be better than aripiprazole monotherapy and lesser than hydroxyzine monotherapy.
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Affiliation(s)
- Nikita Shekhar Sawantdesai
- Department of Pharmacology, SVKM's Dr. Bhanuben Nanavati College of Pharmacy, Mumbai, Maharashtra, India
| | - Pravin Popatrao Kale
- Department of Pharmacology, SVKM's Dr. Bhanuben Nanavati College of Pharmacy, Mumbai, Maharashtra, India
| | - Jay Savai
- Department of Pharmacology, SPP School of Pharmacy and Technology Management, NMIMS University, Mumbai, Maharashtra, India
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Behavioral and pharmacological phenotypes of brain-specific diacylglycerol kinase δ-knockout mice. Brain Res 2016; 1648:193-201. [DOI: 10.1016/j.brainres.2016.07.017] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2016] [Revised: 07/06/2016] [Accepted: 07/12/2016] [Indexed: 12/31/2022]
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Abstract
BACKGROUND The use of psychotropic medications, particularly antidepressants, is common in patients with inflammatory bowel disease (IBD) in spite of a lack of their robust efficacy in this population. This review provides an overview of the use trends of different classes of antidepressant and anti-anxiety medication and their effects on mood, nervous system function, gastrointestinal physiology and immunity drawing from the literature available in the general population, other medical conditions, and when available, patients with IBD. It also covers the evidence base for the actions, efficacy, and potential complications of antidepressants organized by different classes. METHODS We conducted a PubMed search of articles relating the different drug classes probed to the terms above in different populations of interest. All types of articles were accepted including case reports and series, open and randomized trials, reviews, and expert opinion. We also examined the reference lists of the publications found. RESULTS Selective serotonin reuptake inhibitors (SSRIs) and tricyclic antidepressants (TCAs) are the most commonly prescribed agents for anxiety and depression in patients with IBD, though their efficacy for these conditions in the general population are mild to moderate at best. SSRIs are generally well tolerated, though at higher doses, they, like most antidepressant classes, can be associated with activation, serotonergic syndrome, and increased suicidal ideation. TCAs have many more serious side effects but have some shown efficacy for functional GI symptoms. A newer class, the serotonin noradrenergic reuptake inhibitors (SNRIs), can be effective for refractory depression, anxiety and chronic pain syndromes with a side effect profile similar to both SSRIs and more mild manifestations of TCAs. Mirtazapine has moderate efficacy for depression if sedation and weight gain side effects are tolerated and some small support for use in nausea and vomiting. Bupropion targets dopamine and noradrenaline reuptake and has moderate efficacy for depression, and some small support for use in fatigue and smoking cessation. Buspirone has an indication for generalized anxiety disorder though studies show only a minimal benefit. It has some growing evidence for use in functional dyspepsia. Most of these agents have physiological effects on the brain, immune system, and gastrointestinal tract (with the exception of bupropion) hence their therapeutic and side effects manifested in these systems. CONCLUSION Antidepressant medications are frequently prescribed for depression, anxiety disorders, and chronic pain syndromes, but overall support for their efficacy is modest at best. Psychological interventions have growing support for having much more robust effects without the side effects of antidepressants and should be considered first-line treatment or at least an adjunct to psychotropic medications for these conditions.
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GONG XUE, SHAO YIYE, LI BING, CHEN LONG, WANG CUICUI, CHEN YINGHUI. γ-aminobutyric acid transporter-1 is involved in anxiety-like behaviors and cognitive function in knockout mice. Exp Ther Med 2015; 10:653-658. [PMID: 26622370 PMCID: PMC4509144 DOI: 10.3892/etm.2015.2577] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2014] [Accepted: 02/13/2015] [Indexed: 12/15/2022] Open
Abstract
The aim of the present study was to investigate the effect of γ-aminobutyric acid transporter-1 (GAT-1) on the anxiety-like behaviors and cognitive function in knockout mice. In total, 20 adult male mice were divided into two groups, namely the GAT-1 knockout (GAT-1-/-) and wild-type (WT) groups. The open field test, elevated 0-maze (EZM) and Morris water maze were used to evaluate changes in anxiety-like behaviors and cognitive function. Compared with the WT mice, GAT-1-/- mice made more entries and spent a longer time within the central area, traveling a greater distance, during the open field test (P<0.05). The EZM revealed that GAT-1-/- mice spent more time in the open sectors and made more total entries when compared with the WT mice (P<0.01). Observations from the two tests indicated reduced anxiety-like behaviors in the GAT-1-/- mice. During the learning session using a Morris water maze, the latency to find the platform was significantly longer in the GAT-1-/- mice when compared with the WT mice (P<0.01). In addition, during the probe test, the GAT-1-/- mice spent less time in the target quadrant and more time in the opposite quadrant when compared with the WT mice (P<0.01); thus, the cognitive function in the GAT-1-/- mice was impaired. Therefore, the results demonstrated that the anxiety-like behaviors were reduced and cognitive function was impaired in GAT-1 knockout mice, indicating that GAT-1 is involved in anxiety and cognitive functions.
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Affiliation(s)
- XUE GONG
- Department of Neurology, Jinshan Hospital, Fudan University, Shanghai 201508, P.R. China
- Department of Neurology, Shanghai Medical College, Fudan University, Shanghai 200032, P.R. China
| | - YIYE SHAO
- Department of Neurology, Jinshan Hospital, Fudan University, Shanghai 201508, P.R. China
- Department of Neurology, Shanghai Medical College, Fudan University, Shanghai 200032, P.R. China
| | - BING LI
- Center Laboratory, Jinshan Hospital, Fudan University, Shanghai 201508, P.R. China
| | - LONG CHEN
- Department of Neurology, Jinshan Hospital, Fudan University, Shanghai 201508, P.R. China
- Department of Neurology, Shanghai Medical College, Fudan University, Shanghai 200032, P.R. China
| | - CUICUI WANG
- Department of Neurology, Jinshan Hospital, Fudan University, Shanghai 201508, P.R. China
- Department of Neurology, Shanghai Medical College, Fudan University, Shanghai 200032, P.R. China
| | - YINGHUI CHEN
- Department of Neurology, Jinshan Hospital, Fudan University, Shanghai 201508, P.R. China
- Department of Neurology, Shanghai Medical College, Fudan University, Shanghai 200032, P.R. China
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Involvement of the serotonergic system in the anxiolytic-like effect of 2-phenylethynyl butyltellurium in mice. Behav Brain Res 2015; 277:221-7. [DOI: 10.1016/j.bbr.2014.05.071] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2014] [Revised: 05/29/2014] [Accepted: 05/30/2014] [Indexed: 11/15/2022]
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18
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Liu J, Zhai WM, Yang YX, Shi JL, Liu QT, Liu GL, Fang N, Li J, Guo JY. GABA and 5-HT systems are implicated in the anxiolytic-like effect of spinosin in mice. Pharmacol Biochem Behav 2015; 128:41-9. [DOI: 10.1016/j.pbb.2014.11.003] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/01/2014] [Revised: 10/21/2014] [Accepted: 11/01/2014] [Indexed: 10/24/2022]
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Quines CB, Rosa SG, Da Rocha JT, Gai BM, Bortolatto CF, Duarte MMMF, Nogueira CW. Monosodium glutamate, a food additive, induces depressive-like and anxiogenic-like behaviors in young rats. Life Sci 2014; 107:27-31. [PMID: 24802127 DOI: 10.1016/j.lfs.2014.04.032] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2014] [Revised: 04/22/2014] [Accepted: 04/23/2014] [Indexed: 12/16/2022]
Abstract
UNLABELLED Monosodium glutamate (MSG) has been the target of research due to its toxicological effects. AIMS We investigated the depressive- and anxiogenic-like behaviors in rats exposed to neonatal subcutaneous injection of MSG. The involvement of the serotonergic system, by measuring [(3)H] serotonin (5-HT) uptake in cerebral cortices, and the hypothalamic pituitary adrenal (HPA) axis, by determining serum adrenocorticotropic hormone (ACTH) and corticosterone levels, was also examined. MATERIALS AND METHODS Male and female newborn Wistar rats were divided into control and MSG groups, which received, respectively, a daily subcutaneous injection of saline (0.9%) or MSG (4 g/kg/day) from the 1st to 5th postnatal day. The behavioral tests [spontaneous locomotor activity, contextual fear conditioning, and forced swimming test (FST)] were performed from the 60th to 64th postnatal day. MSG-treated animals showed alteration in the spontaneous locomotor activity, an increase in the number of fecal pellets and the number of animal's vocalizations and urine occurrence, and a decrease in the grooming time. KEY FINDINGS The MSG exposure increased the immobility time in the FST and the freezing reaction in the contextual fear conditioning. Additionally, MSG treatment increased the [(3)H]5-HT uptake in the cerebral cortices of rats and induced a deregulation of HPA axis function (by increasing serum ACTH and corticosterone levels). SIGNIFICANCE In conclusion MSG-treated rats are more susceptible to develop anxiogenic- and depressive-like behaviors, which could be related to a dysfunction in the serotonergic system.
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Affiliation(s)
- Caroline B Quines
- Laboratório de Síntese, Reatividade e Avaliação Farmacológica e Toxicológica de Organocalcogênios, Centro de Ciências Naturais e Exatas, Universidade Federal de Santa Maria, Santa Maria, CEP 97105-900, Rio Grande do Sul, Brazil
| | - Suzan G Rosa
- Laboratório de Síntese, Reatividade e Avaliação Farmacológica e Toxicológica de Organocalcogênios, Centro de Ciências Naturais e Exatas, Universidade Federal de Santa Maria, Santa Maria, CEP 97105-900, Rio Grande do Sul, Brazil
| | - Juliana T Da Rocha
- Laboratório de Síntese, Reatividade e Avaliação Farmacológica e Toxicológica de Organocalcogênios, Centro de Ciências Naturais e Exatas, Universidade Federal de Santa Maria, Santa Maria, CEP 97105-900, Rio Grande do Sul, Brazil
| | - Bibiana M Gai
- Laboratório de Síntese, Reatividade e Avaliação Farmacológica e Toxicológica de Organocalcogênios, Centro de Ciências Naturais e Exatas, Universidade Federal de Santa Maria, Santa Maria, CEP 97105-900, Rio Grande do Sul, Brazil
| | - Cristiani F Bortolatto
- Laboratório de Síntese, Reatividade e Avaliação Farmacológica e Toxicológica de Organocalcogênios, Centro de Ciências Naturais e Exatas, Universidade Federal de Santa Maria, Santa Maria, CEP 97105-900, Rio Grande do Sul, Brazil
| | - Marta Maria M F Duarte
- Departamento de Ciências da Saúde, Universidade Luterana do Brasil, Santa Maria, Rio Grande do Sul, Brazil
| | - Cristina W Nogueira
- Laboratório de Síntese, Reatividade e Avaliação Farmacológica e Toxicológica de Organocalcogênios, Centro de Ciências Naturais e Exatas, Universidade Federal de Santa Maria, Santa Maria, CEP 97105-900, Rio Grande do Sul, Brazil.
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20
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Santos RO, de Assunção GLM, de Medeiros DMB, de Sousa Pinto IA, de Barros KS, Soares BL, André E, Gavioli EC, de Paula Soares-Rachetti V. Evaluation of the effect of acute sibutramine in female rats in the elevated T-maze and elevated plus-maze tests. Basic Clin Pharmacol Toxicol 2013; 114:181-7. [PMID: 24034271 DOI: 10.1111/bcpt.12131] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2013] [Accepted: 08/12/2013] [Indexed: 01/01/2023]
Abstract
Sibutramine is a serotonin and norepinephrine reuptake inhibitor indicated for the treatment of obesity. A pre-clinical study showed that acute administration of sibutramine promoted anxiolytic- and panicolytic-like effects in male rats. However, in clinical reports, sibutramine favoured the onset of panic attacks in women. In this study, the effect of sibutramine on experimental anxiety in females and the relevance of different oestrous cycle phases for this effect were analysed. In experiment 1, both male and female rats were submitted to acute intraperitoneal injection of sibutramine or vehicle 30 min. before testing in the elevated T-maze (ETM) and in the open-field test (OF). Females in the pro-oestrus (P), oestrus (E), early dioestrus (ED) and late dioestrus (LD) phases were tested in the ETM and OF (experiment 2) or in the elevated plus-maze (EPM) 30 min. after the injection of sibutramine. Sibutramine impaired the escape response in the ETM in both males and females. This effect was observed for P, E and ED, but not for LD females. Sibutramine altered neither the inhibitory avoidance in the ETM nor the behaviour of females in the EPM. Thus, sibutramine promoted a panicolytic-like effect in female rats cycling at P, E and ED, but not in the LD phase and did not alter behaviours related to anxiety in both ETM and EPM. Considering that pre-clinical studies aiming the screening of anxiolytic drugs employ male rodents, data here obtained reinforce the importance of better understanding the effects of drugs in females.
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Affiliation(s)
- Raliny O Santos
- Laboratory of Behavioural Pharmacology, Department of Biophysics and Pharmacology, Biosciences Center, Federal University of Rio Grande do Norte, Natal, Brazil
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The anxiogenic-like effects of dehydration in a semi-desert rodent Meriones shawi indicating the possible involvement of the serotoninergic system. Acta Histochem 2012; 114:603-7. [PMID: 22172710 DOI: 10.1016/j.acthis.2011.11.005] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2011] [Revised: 11/08/2011] [Accepted: 11/09/2011] [Indexed: 11/21/2022]
Abstract
Dehydration is a powerful stimulus causing disequilibrium in homeostasis of water and electrolytes resulting from depletion in total body water. Most studies have focused on domestic and laboratory animals; however, the study of desert animals allows improved understanding about water balance and resistance to dehydration and associated behavioral changes, including those related to mood disorders. Meriones shawi (Shaw's Jird) is a desert rodent characterized by its resistance to long periods of thirst that can extend for several months. In the present study, M. shawi were subjected to water deprivation for 1 and 3 months. We used 5-HT immunohistochemistry to evaluate the effects of prolonged dehydration on the serotoninergic system in both dorsal and median raphe nuclei (DRN, MRN), which are the main sources of 5-HT input to several brain areas. In addition, a dark/light box was used to evaluate the anxiolytic-like or anxiogenic-like effects of dehydration on M. shawi. The results showed a reduction in the 5-HT immunolabelling in both DRN and MRN following 1 and 3 months of dehydration. This diminution of serotonin immunoreactivity was accompanied by noticeable changes in anxiety behavior of Meriones, with animals spending more time in the light box, suggesting anxiogenic-like effects caused by dehydration. Overall, the results indicate that dehydration is able to reduce serotoninergic neurotransmission, which might be involved in generating anxiety behavior in this desert animal.
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Albelda N, Joel D. Current animal models of obsessive compulsive disorder: an update. Neuroscience 2012; 211:83-106. [PMID: 21925243 DOI: 10.1016/j.neuroscience.2011.08.070] [Citation(s) in RCA: 61] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2011] [Revised: 08/29/2011] [Accepted: 08/31/2011] [Indexed: 12/30/2022]
Affiliation(s)
- N Albelda
- Department of Psychology, Tel Aviv University, Ramat-Aviv, Tel Aviv 69978, Israel
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Loane C, Politis M. Buspirone: What is it all about? Brain Res 2012; 1461:111-8. [DOI: 10.1016/j.brainres.2012.04.032] [Citation(s) in RCA: 132] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2012] [Revised: 04/12/2012] [Accepted: 04/17/2012] [Indexed: 11/25/2022]
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Sinclair LI, Nutt DJ. Anxiolytics. HANDBOOK OF CLINICAL NEUROLOGY 2012; 106:669-79. [PMID: 22608651 DOI: 10.1016/b978-0-444-52002-9.00040-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2024]
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25
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The GABA system in anxiety and depression and its therapeutic potential. Neuropharmacology 2012; 62:42-53. [DOI: 10.1016/j.neuropharm.2011.08.040] [Citation(s) in RCA: 348] [Impact Index Per Article: 29.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2011] [Accepted: 08/23/2011] [Indexed: 01/01/2023]
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Faustino TT, Almeida RBD, Andreatini R. [Medicinal plants for the treatment of generalized anxiety disorder: a review of controlled clinical studies]. ACTA ACUST UNITED AC 2011; 32:429-36. [PMID: 21308265 DOI: 10.1590/s1516-44462010005000026] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2010] [Accepted: 05/23/2010] [Indexed: 11/22/2022]
Abstract
OBJECTIVE This work aimed to identify controlled trials, which evaluated effectiveness of herbal medicines in subjects suffering generalized anxiety disorder. METHOD Controlled studies (randomized, comparative with placebo and/or standard drug, double-blind) were sought through electronic and hand-searches. The word strategy used "plant OR phytomed* OR extract OR herbal OR medicinal (OR specific name plants)" e "anxie* OR anxioly* OR tranquil* OR GAD", limited to "human OR clinical trial OR randomized controlled trial OR meta-analysis OR review". The search was restricted to English language. RESULTS Piper methysticum presented an unequivocal anxiolytic effect, but most studies also included patients with other anxiety disorders (e.g. phobias). Isolated studies with Ginkgo biloba, Galphimia glauca, Matricaria recutita, Passiflora incarnata and Valeriana officinalis showed a potential use for anxious diseases. Despite this low number of studies, Ginkgo biloba and Matricaria recutita showed an effect size (Cohen's d=0.47 to 0.87) similar or higher to standard anxiolytics drugs (benzodiazepines, buspirone and antidepressants-0.17 to 0.38). No additional study with other plants was found. CONCLUSION Despite the therapeutic potential of medicinal plants in generalized anxiety disorder, very few controlled trials assessing herbal medicines in generalized anxiety disorder were found. Additionally, these studies present serious flaw design.
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Affiliation(s)
- Thalita Thais Faustino
- Laboratório de Fisiologia e Farmacologia do Sistema Nervoso Central, Departamento de Farmacologia, Universidade Federal do Paraná, Curitiba, PR, Brazil
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Frassetto SS, Alves IO, Santos MM, Schmidt AES, Lopes JJ, Oliveira PA, Vinagre AS, Pereira P. Absence of sibutramine effect on spontaneous anxiety in rats. ACTA ACUST UNITED AC 2011; 54:375-80. [PMID: 20625649 DOI: 10.1590/s0004-27302010000400006] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2009] [Accepted: 01/20/2010] [Indexed: 11/22/2022]
Abstract
UNLABELLED INTRODUSTION: Sibutramine has been described as a drug recommended for treatment of obesity, since it has the ability to inhibit the reuptake of serotonin and noradrenaline in the central nervous system, thereby increasing energy expenditure. OBJECTIVE Investigate the anxiogenic and anxiolytic effects of acute and chronic treatment with sibutramine in rats submitted to the task of the elevated plus-maze. METHODS Diazepam was used as a positive control for the anxiolytic effect, and the task of the elevated plus-maze showed sensitivity to detect the effect. In the chronic treatment, sibutramine was ingested for a period of two months. RESULTS The acute and chronic treatments at the studied dose, which is described to produce a maximum effect of anti-obesity in rats, did not interfere with anxiety. CONCLUSIONS The acute and chronic administration of sibutramine is not related to anxiolytic or anxiogenic effects.
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Albelda N, Joel D. Animal models of obsessive-compulsive disorder: exploring pharmacology and neural substrates. Neurosci Biobehav Rev 2011; 36:47-63. [PMID: 21527287 DOI: 10.1016/j.neubiorev.2011.04.006] [Citation(s) in RCA: 113] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2010] [Revised: 04/05/2011] [Accepted: 04/08/2011] [Indexed: 01/07/2023]
Abstract
During the last 30 years there have been many attempts to develop animal models of obsessive-compulsive disorder (OCD). Most models have not been studied further following the original publication, and in the past few years, most papers present studies employing a few established animal models, exploring the neural basis of compulsive behavior and developing new treatment strategies. Here we summarize findings from the five most studied animal models of OCD: 8-OHDPAT (8-hydroxy-2-(di-n-propylamino)-tetralin hydrobromide) induced decreased alternation, quinpirole-induced compulsive checking, marble burying, signal attenuation and spontaneous stereotypy in deer mice. We evaluate each model's face validity, derived from similarity between the behavior in the model and the specific symptoms of the human condition, predictive validity, derived from similarity in response to treatment (pharmacological or other), and construct validity, derived from similarity in the mechanism (physiological or psychological) that induces behavioral symptoms and in the neural systems involved. We present ideas regarding future clinical research based on each model's findings, and on this basis, also emphasize possible new approaches for the treatment of OCD.
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Affiliation(s)
- Noa Albelda
- Department of Psychology, Tel Aviv University, Ramat-Aviv, Tel Aviv 69978, Israel
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Pobbe RLH, Zangrossi H, Blanchard DC, Blanchard RJ. Involvement of dorsal raphe nucleus and dorsal periaqueductal gray 5-HT receptors in the modulation of mouse defensive behaviors. Eur Neuropsychopharmacol 2011; 21:306-15. [PMID: 20570114 PMCID: PMC3250220 DOI: 10.1016/j.euroneuro.2010.05.004] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/23/2009] [Revised: 03/26/2010] [Accepted: 05/04/2010] [Indexed: 11/17/2022]
Abstract
Previous findings point to the involvement of the dorsal raphe nucleus (DRN) and dorsal periaqueductal gray (dPAG) serotonergic receptors in the mediation of defensive responses that are associated with specific subtypes of anxiety disorders. These studies have mostly been conducted with rats tested in the elevated T-maze, an experimental model of anxiety that was developed to allow the measurement, in the same animal, of two behaviors mentioned: inhibitory avoidance and one-way escape. Such behavioral responses have been respectively related to generalized anxiety disorder (GAD) and panic disorder (PD). In order to assess the generality of these findings, in the current study we investigated the effects of the injection of 5-HT-related drugs into the DRN and dPAG of another rodent species, mouse, on the mouse defense test battery (MDTB), a test of a range of defensive behaviors to an unconditioned threat, a predator. Male CD-1 mice were tested in the MDTB after intra-DRN administration of the 5-HT(1A) receptor antagonist WAY-100635 or after intra-dPAG injection of two serotonergic agonists, the 5-HT(1A) receptor agonist 8-OH-DPAT and the 5-HT(2A/2C) receptor agonist DOI. Intra-DRN injection of WAY-100635 did not change behavioral responses of mice confronted with a rat in the MDTB. In the dPAG, both 8-OH-DPAT and DOI consistently impaired mouse escape behavior assessed in the MDTB. Intra-dPAG infusion of 8-OH-DPAT also decreased measures of mouse risk assessment in the rat exposure test. In conclusion, the current findings are in partial agreement with previous results obtained with rats tested in the elevated T-maze. Although there is a high level of similarity between the behavioral effects obtained in rats (elevated T-maze) and mice (MDTB and RET) with the infusion of 5-HT agonists into the dPAG, the same is not true regarding the effects of blockade of DRN 5-HT(1A) receptors in these rodent species. These data suggest that there may be differences between mice and rats regarding the involvement of the DRN in the mediation of defensive behaviors.
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MESH Headings
- Animals
- Anxiety Disorders/metabolism
- Behavior, Animal/drug effects
- Escape Reaction/drug effects
- Immobility Response, Tonic/drug effects
- Infusions, Intraventricular
- Male
- Mice
- Nerve Tissue Proteins/agonists
- Nerve Tissue Proteins/antagonists & inhibitors
- Nerve Tissue Proteins/physiology
- Neurons/drug effects
- Panic Disorder/metabolism
- Periaqueductal Gray/drug effects
- Raphe Nuclei/drug effects
- Receptor, Serotonin, 5-HT1A/physiology
- Receptor, Serotonin, 5-HT2A/physiology
- Receptor, Serotonin, 5-HT2C/physiology
- Receptors, Serotonin/physiology
- Serotonin 5-HT1 Receptor Agonists/administration & dosage
- Serotonin 5-HT1 Receptor Agonists/pharmacology
- Serotonin 5-HT1 Receptor Antagonists/administration & dosage
- Serotonin 5-HT1 Receptor Antagonists/pharmacology
- Serotonin 5-HT2 Receptor Agonists/administration & dosage
- Serotonin 5-HT2 Receptor Agonists/pharmacology
- Species Specificity
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Affiliation(s)
- Roger L H Pobbe
- Pacific Biosciences Research Center, University of Hawaii, 1993 East-West Road, Honolulu, HI 96822, USA.
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30
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Cannabidiol inhibitory effect on marble-burying behaviour: involvement of CB1 receptors. Behav Pharmacol 2010; 21:353-8. [DOI: 10.1097/fbp.0b013e32833b33c5] [Citation(s) in RCA: 94] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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31
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Brüning CA, Prigol M, Roehrs JA, Nogueira CW, Zeni G. Involvement of the serotonergic system in the anxiolytic-like effect caused by m-trifluoromethyl-diphenyl diselenide in mice. Behav Brain Res 2009; 205:511-7. [DOI: 10.1016/j.bbr.2009.08.010] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2009] [Revised: 08/04/2009] [Accepted: 08/08/2009] [Indexed: 11/29/2022]
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Cagni P, Gonçalves I, Ziller F, Emile N, Barros M. Humans and natural predators induce different fear/anxiety reactions and response pattern to diazepam in marmoset monkeys. Pharmacol Biochem Behav 2009; 93:134-40. [PMID: 19414027 DOI: 10.1016/j.pbb.2009.04.020] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/20/2008] [Revised: 04/22/2009] [Accepted: 04/29/2009] [Indexed: 11/20/2022]
Abstract
The behavioral response of marmoset monkeys in the Human Threat (HT) test of anxiety, and the effects of diazepam (DZP), were compared to those in the Predator Confrontation (PC) procedure. Subjects (n=13) were initially submitted to four habituation trials, followed by four random confrontation sessions for each test (DZP 0, 1, 2 and 3 mg/kg). Each trial was divided into three consecutive 5-min intervals: pre-exposure, exposure (human observer, taxidermized oncilla cat) and post-exposure. As DZP induced sedation, marmosets (n=10) were re-tested in a second experiment, consisting of two habituation trials and four confrontation sessions per stimulus, with lower DZP doses (0, 0.10, 0.25 and 0.50 mg/kg). Exposure to both stimuli significantly increased direct gazes and alarm calls, being dose-dependently reduced by DZP only in the PC test. In the HT protocol, the significant decrease in aerial scans was not detected with 0.10 mg/kg DZP. Locomotion, proximity, displacement activities and vigilance were not consistently influenced by the stimuli and/or DZP. The results thus suggest that the HT test had a greater impact on the marmosets' behavior, while DZP was more effective on the reactions observed in the PC test, possibly due to the inherent nature of each stimulus, distinct threat levels and/or presentation order.
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Affiliation(s)
- Priscila Cagni
- Department of Pharmaceutical Sciences, School of Health Sciences, University of Brasilia, DF, Brazil
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Storvik M, Hakkinen M, Tupala E, Tiihonen J. 5-HT1A Receptors in the Frontal Cortical Brain Areas in Cloninger Type 1 and 2 Alcoholics Measured by Whole-Hemisphere Autoradiography. Alcohol Alcohol 2008; 44:2-7. [DOI: 10.1093/alcalc/agn090] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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34
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Ghisleni G, Kazlauckas V, Both FL, Pagnussat N, Mioranzza S, Rocha JBT, Souza DO, Porciúncula LO. Diphenyl diselenide exerts anxiolytic-like effect in Wistar rats: putative roles of GABAA and 5HT receptors. Prog Neuropsychopharmacol Biol Psychiatry 2008; 32:1508-15. [PMID: 18579279 DOI: 10.1016/j.pnpbp.2008.05.008] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/18/2007] [Revised: 05/08/2008] [Accepted: 05/12/2008] [Indexed: 11/26/2022]
Abstract
Diphenyl diselenide [(PhSe)2] is an organoselenium compound which presents pharmacological antioxidant, anti-inflammatory, antinociceptive and antidepressant properties. The present study was designed to investigate the anxiolytic effect of (PhSe)2 in rats, employing the elevated plus maze task. The involvement of 5HT and GABA receptors in the anxiolytic-like effect was also evaluated. (PhSe)2 (5, 25 and 50 micromol/kg, i.p.) did not affect locomotor activity as evaluated in the open open-field test, and learning and memory when assessed in the inhibitory foot-shock avoidance task. However, (PhSe)2 at the 50 micromol/kg dose produced signs of an anxiolytic action, namely a decreased number of fecal boli in the open-field arena and an increased time spent in as well as an increased number of entries to the open arms of the elevated plus maze test. To evaluate the role of GABA and 5HT receptors in the anxiolytic-like effect of (PhSe)2, a selective GABAA receptor antagonist bicuculline, (0.75 mg/kg, i.p.), a non-selective 5HT2A/2C receptor antagonist, ritanserin (2 mg/kg, i.p.), a selective 5HT2A receptor antagonist, ketanserin (1 mg/kg, i.p.), and a selective 5HT1A receptor antagonist, WAY100635 (0.1 mg/kg, i.p.) were used. All the antagonists used were able to abolish the anxiolytic effect of (PhSe)2 suggesting that GABAA and 5HT receptors may play a role in the pharmacological property of this selenocompound in the central nervous system.
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Affiliation(s)
- Gabriele Ghisleni
- Departamento de Química, Centro de Ciências Naturais e Exatas, Universidade Federal de Santa Maria, Santa Maria, RS, CEP 97105-900, Brazil.
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35
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Qi X, Lin W, Li J, Li H, Wang W, Wang D, Sun M. Fluoxetine increases the activity of the ERK-CREB signal system and alleviates the depressive-like behavior in rats exposed to chronic forced swim stress. Neurobiol Dis 2008; 31:278-85. [DOI: 10.1016/j.nbd.2008.05.003] [Citation(s) in RCA: 182] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2007] [Revised: 04/17/2008] [Accepted: 05/05/2008] [Indexed: 01/05/2023] Open
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Araújo AC, Nicotra F, Costa B, Giagnoni G, Cipolla L. Fructose-fused γ-butyrolactones and lactams, synthesis and biological evaluation as GABA receptor ligands. Carbohydr Res 2008; 343:1840-8. [DOI: 10.1016/j.carres.2008.03.013] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2008] [Revised: 03/07/2008] [Accepted: 03/09/2008] [Indexed: 01/17/2023]
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37
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Choi JY, Pena ID, Choi JH, Yoon SY, Yim DS, Lee YS, Ko KH, Shin CY, Ryu JH, Kim WK, Cheong JH. Psychopharmacological Profile of the Water Extract of Gardenia jasminoides and Its Constituents, Genipin and Geniposide, in Mice. Biomol Ther (Seoul) 2008. [DOI: 10.4062/biomolther.2008.16.2.118] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
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38
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Duzzioni M, Calixto AV, Duarte FS, De Lima TC. Modulation of anxiety in rats evaluated in the elevated T-maze: Evidence of the relationship between substance P and diazepam. Behav Brain Res 2008; 187:140-5. [DOI: 10.1016/j.bbr.2007.09.007] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2007] [Revised: 09/01/2007] [Accepted: 09/07/2007] [Indexed: 11/16/2022]
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Abstract
This review assesses the parallel data on the role of gamma-aminobutyric acid (GABA) in depression and anxiety. We review historical and new data from both animal and human experimentation which have helped define the key role for this transmitter in both these mental pathologies. By exploring the overlap in these conditions in terms of GABAergic neurochemistry, neurogenetics, brain circuitry, and pharmacology, we develop a theory that the two conditions are intrinsically interrelated. The role of GABAergic agents in demonstrating this interrelationship and in pointing the way to future research is discussed.
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Affiliation(s)
- Allan V Kalueff
- Laboratory of Clinical Science, National Institute of Mental Health, Bethesda, Maryland, USA
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40
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Kaszkin-Bettag M, Ventskovskiy BM, Kravchenko A, Rettenberger R, Richardson A, Heger PW, Heger M. The special extract ERr 731 of the roots of Rheum rhaponticum decreases anxiety and improves health state and general well-being in perimenopausal women. Menopause 2007; 14:270-83. [PMID: 17213754 DOI: 10.1097/01.gme.0000251932.48426.35] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
OBJECTIVE To investigate the efficacy of the special extract ERr 731 from the roots of Rheum rhaponticum compared with placebo on anxiety, health state, and general well-being in perimenopausal women. DESIGN This study is a multicenter, prospective, randomized, double-blind, placebo-controlled clinical trial, in which 109 perimenopausal women with climacteric complaints and anxiety received either 1 enteric coated tablet of ERr 731 (n=54) or placebo (n=55) daily for 12 weeks. The Hamilton Anxiety Scale, the Menopause Rating Scale II, the Women's Health Questionnaire, and the Psychological General Well-Being Index were used to measure anxiety, health state, and subjective psychological well-being. RESULTS The results demonstrate that ERr 731 is highly effective in reducing anxiety in perimenopausal women compared with placebo. After 12 weeks, the Hamilton Anxiety Scale total score decreased significantly with ERr 731 (from 27.5+/-6.8 to 9.4+/-4.2 points) compared with placebo (from 25.1+/-6.0 to 21.6+/-8.6 points). ERr 731 also reduced the Hamilton Anxiety Scale factor scores for somatic and psychic anxiety. After 12 weeks, a reduction in the severity of anxiety from "moderate" or "severe" to "slight" was observed in 33 of 39 ERr 731 women completing the double-blind phase, which correlated well with the reduction in number and severity of hot flushes. This was reflected by a high rate of ERr 731 women reporting a marked improvement in health state and general well-being. CONCLUSIONS ERr 731 is an effective medication for women with menopause-related anxiety and improves their health state and general well-being.
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41
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Ettenberg A, Bernardi RE. Effects of buspirone on the immediate positive and delayed negative properties of intravenous cocaine as measured in the conditioned place preference test. Pharmacol Biochem Behav 2007; 87:171-8. [PMID: 17524462 PMCID: PMC1949322 DOI: 10.1016/j.pbb.2007.04.014] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/30/2006] [Revised: 04/16/2007] [Accepted: 04/19/2007] [Indexed: 11/29/2022]
Abstract
In prior work, we have demonstrated that the behavioral effects of cocaine adhere to the predictions of the opponent-process theory of drug action. Animals develop conditioned place preferences for distinct locations paired with the immediate effects of IV cocaine, but learn to avoid places paired with the effects present 15-min post-injection. It was of interest to assess the putative role of 5-HT in producing the negative properties of cocaine since cocaine acts to inhibit the reuptake of serotonin (5-HT) and since such actions have been associated with anxiogenic consequences. Male rats were administered a reinforcing dose of cocaine (1.0 mg/kg IV) and then placed - either immediately or after a 15-min delay - into one side of a two-compartment (black-white) conditioned place preference (CPP) box for 5-min. On alternate days, the animals received IV saline injections and were placed in the opposite side of the CPP box. This continued for eight days after which animals had experienced 4 pairings of cocaine with one side (black or white) of the CPP apparatus, and 4 saline pairings with the opposite side. Other groups of rats were treated identically except that 30-min prior to placement into the apparatus, these animals received an IP injection of saline or buspirone (a partial 5-HT1A agonist) at a dose that we have shown to be anxiolytic (2.5 mg/kg IP). Control animals experienced either buspirone or saline pretreatments without cocaine. Our results confirm that animals increase the time spent on the side paired with the immediate effects of cocaine (compared to baseline), but tend to avoid the side paired with effects present 15-min post-injection. Buspirone had no effect on the immediate rewarding properties of cocaine, but completely reversed the negative properties present 15-min post-cocaine. These results are consistent with the view that attenuation of 5-HT neurotransmission (via the autoreceptor agonist properties of buspirone) can reverse the negative impact of IV cocaine.
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Affiliation(s)
- Aaron Ettenberg
- Behavioral Pharmacology Laboratory, Department of Psychology, University of California, Santa Barbara, CA 93106-9660, USA.
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42
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Guzman D, Ettenberg A. Runway self-administration of intracerebroventricular cocaine: evidence of mixed positive and negative drug actions. Behav Pharmacol 2007; 18:53-60. [PMID: 17218797 DOI: 10.1097/fbp.0b013e3280144ac9] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
In previous work from our laboratory, animals running for intravenous cocaine developed a unique approach-avoidance 'retreat behavior' that was hypothesized to result from cocaine's well documented reinforcing (positive) and anxiogenic (negative) properties. To assess the role of central mechanisms in producing cocaine's positive and negative effects, we assessed whether or not animals running a straight alley for intracerebroventricular applications of cocaine would produce a similar behavioral profile to that previously observed with intravenous applications. Retreat frequency and location were measured in male Sprague-Dawley rats trained to run an alley for one of four doses of intracerebroventricular-administered cocaine (0, 25, 50 or 100 microg cocaine/infusion). Testing involved a single trial per day over 14 consecutive days with a single infusion of cocaine delivered upon goal box entry. The 100 and 50 microg intracerebroventricular cocaine groups exhibited significantly higher retreat frequencies than the 25 and 0 microg groups and the nature and magnitude of the behavior was comparable to that previously observed with intravenous cocaine. These results suggest that the intracerebroventricular self-administration of cocaine results in mixed positive and negative consequences and therefore likely stem from the drug's actions within the central nervous system.
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Affiliation(s)
- Daniel Guzman
- Behavioral Pharmacology Laboratory, Department of Psychology, University of California, Santa Barbara, California 93106-9660, USA
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43
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Kalueff AV. Neurobiology of memory and anxiety: from genes to behavior. Neural Plast 2007; 2007:78171. [PMID: 17502911 PMCID: PMC1847471 DOI: 10.1155/2007/78171] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2006] [Revised: 11/15/2006] [Accepted: 11/16/2006] [Indexed: 01/18/2023] Open
Abstract
Interaction of anxiety and memory represents an essential feature of CNS functioning. This paper reviews experimental data coming from neurogenetics, neurochemistry, and behavioral pharmacology (as well as parallel clinical findings) reflecting different mechanisms of memory-anxiety interplay, including brain neurochemistry, circuitry, pharmacology, neuroplasticity, genes, and gene-environment interactions. It emphasizes the complexity and nonlinearity of such interplay, illustrated by a survey of anxiety and learning/memory phenotypes in various genetically modified mouse models that exhibit either synergistic or reciprocal effects of the mutation on anxiety levels and memory performance. The paper also assesses the putative role of different neurotransmitter systems and neuropeptides in the regulation of memory processes and anxiety, and discusses the role of neural plasticity in these mechanisms.
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Affiliation(s)
- Allan V Kalueff
- Laboratory of Clinical Science, Division of Intramural Research Program, National Institute of Mental Health , Bethesda, MD 20892-1264, USA.
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44
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Kalueff AV. Mapping convulsants' binding to the GABA-A receptor chloride ionophore: a proposed model for channel binding sites. Neurochem Int 2007; 50:61-8. [PMID: 16959376 PMCID: PMC1939818 DOI: 10.1016/j.neuint.2006.07.004] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2006] [Revised: 07/05/2006] [Accepted: 07/07/2006] [Indexed: 02/01/2023]
Abstract
Gamma-aminobutyric acid (GABA) type A receptors play a key role in brain inhibitory neurotransmission, and are ligand-activated chloride channels blocked by numerous convulsant ligands. Here we summarize data on binding of picrotoxin, tetrazoles, beta-lactams, bicyclophosphates, butyrolactones and neurotoxic pesticides to GABA-A ionophore, and discuss functional and structural overlapping of their binding sites. The paper reviews data on convulsants' binding sensitivity to different point mutations in ionophore-lining second trans-membrane domains of GABA-A subunits, and maps possible location of convulsants' sites within the chloride ionophore. We also discuss data on inhibition of glycine, glutamate, serotonin (5-HT3) and N-acetylcholine receptors by GABA-A channel blockers, and examine the applicability of this model to other homologous ionotropic receptors. Positioning various convulsant-binding sites within ionophore of GABA-A receptors, this model enables a better understanding of complex architectonics of ionotropic receptors, and may be used for developing new channel-modulating drugs.
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Affiliation(s)
- A V Kalueff
- Laboratory of Clinical Science, Building 10, Room 3D41, National Institute of Mental Health (NIMH), NIH, 10 Center Dr. MSC 1264, Bethesda, MD 20892-1264, USA.
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45
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Bertoglio LJ, Zangrossi H. Involvement of dorsolateral periaqueductal gray N-methyl-D-aspartic acid glutamate receptors in the regulation of risk assessment and inhibitory avoidance behaviors in the rat elevated T-maze. Behav Pharmacol 2006; 17:589-96. [PMID: 17021391 DOI: 10.1097/01.fbp.0000236270.64676.b4] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
The involvement of the dorsolateral periaqueductal gray in the regulation of fear-related behaviors such as escape and freezing is well established. It is still a matter of investigation, however, whether this midbrain area may have a relevant role in the modulation of more subtle defensive responses associated with anxiety such as risk assessment and inhibitory avoidance. By stimulating N-methyl-D-aspartic acid glutamate receptors located in the dorsolateral periaqueductal gray with its prototypical agonist N-methyl-D-aspartic acid (50 pmol), we report here an increase in both risk assessment and inhibitory avoidance behaviors of male Wistar rats tested in the elevated T-maze. These results are indicative of an anxiogenic-like effect. The selective N-methyl-D-aspartic acid receptor antagonist DL-2-amino-7-phosphonoheptanoic acid (2.0 and 4.0 nmol) had the opposite effect on both defensive tasks. Pretreatment with an ineffective dose of DL-2-amino-7-phosphonoheptanoic acid (1.0 nmol) prevented the N-methyl-D-aspartic acid anxiogenic-like effect. At the dose range of DL-2-amino-7-phosphonoheptanoic acid and/or N-methyl-D-aspartic acid tested, neither the escape response from one of the elevated T-maze open arms nor the general exploratory activity as assessed in the open-field test was affected. The present results suggest that the dorsolateral periaqueductal gray column is also involved in the regulation of defensive behaviors related to anxiety, and N-methyl-D-aspartic acid glutamate receptors are recruited for this action.
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Affiliation(s)
- Leandro José Bertoglio
- Department of Pharmacology, School of Medicine, University of São Paulo, São Paulo, Brazil.
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46
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Ettenberg A, Bernardi RE. Anxiolytic-like actions of buspirone in a runway model of intravenous cocaine self-administration. Pharmacol Biochem Behav 2006; 85:393-9. [PMID: 17064759 PMCID: PMC1851937 DOI: 10.1016/j.pbb.2006.09.007] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/01/2006] [Revised: 09/02/2006] [Accepted: 09/11/2006] [Indexed: 10/24/2022]
Abstract
In previous work from our laboratory, rats traversing a straight alley for a reward of IV cocaine have been observed to develop ambivalence about entering the goal box. Over trials, animals repeatedly run toward the goal box, stop at the entry point, and then retreat back toward the start box. This unique pattern of retreat behavior has been shown to reflect a form of "approach-avoidance conflict" that stems from the subjects' concurrent positive (cocaine reward) and negative (cocaine-induced anxiety) associations with the goal box. Buspirone, a partial 5-HT(1A) agonist, has been reported to produce anxiolytic-like actions in the clinic, but has had mixed results in experimental tests of anxiety using animal subjects. Since most animal tests of conflict/anxiety employ the administration of foot-shock - a relatively strong aversive stimulus - it was of interest to determine whether buspirone would alter the more subtle approach-avoidance conflict observed in well-trained animals running a straight alley for single daily injections of 1.0 mg/kg IV cocaine. Runway testing consisted of single daily trials that continued until consistent approach-avoidance retreats were exhibited. Each animal was then pretreated 30 min prior to runway testing with vehicle and one of three doses of buspirone (0.0, 1.0, 2.5 or 5.0 mg/kg IP). Testing continued in a counterbalanced manner until all rats had experienced each dose of buspirone with 3 days of cocaine-only trials between each test day. The number of retreats exhibited on each trial served as an index of the approach-avoidance conflict present on that trial. Results clearly demonstrated that buspirone (at the two higher doses) attenuated the retreat behavior of animals approaching a goal box for IV cocaine -- an action consistent with its anxiolytic-like actions in the clinic.
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Affiliation(s)
- Aaron Ettenberg
- Behavioral Pharmacology Laboratory, Department of Psychology, University of California, Santa Barbara, CA 93106-9660, USA.
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47
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Ebner K, Singewald N. The role of substance P in stress and anxiety responses. Amino Acids 2006; 31:251-72. [PMID: 16820980 DOI: 10.1007/s00726-006-0335-9] [Citation(s) in RCA: 216] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2005] [Accepted: 02/21/2006] [Indexed: 12/18/2022]
Abstract
Substance P (SP) is one of the most abundant peptides in the central nervous system and has been implicated in a variety of physiological and pathophysiological processes including stress regulation, as well as affective and anxiety-related behaviour. Consistent with these functions, SP and its preferred neurokinin 1 (NK1) receptor has been found within brain areas known to be involved in the regulation of stress and anxiety responses. Aversive and stressful stimuli have been shown repeatedly to change SP brain tissue content, as well as NK1 receptor binding. More recently it has been demonstrated that emotional stressors increase SP efflux in specific limbic structures such as amygdala and septum and that the magnitude of this effect depends on the severity of the stressor. Depending on the brain area, an increase in intracerebral SP concentration (mimicked by SP microinjection) produces mainly anxiogenic-like responses in various behavioural tasks. Based on findings that SP transmission is stimulated under stressful or anxiety-provoking situations it was hypothesised that blockade of NK1 receptors may attenuate stress responses and exert anxiolytic-like effects. Preclinical and clinical studies have found evidence in favour of such an assumption. The status of this research is reviewed here.
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Affiliation(s)
- K Ebner
- Department of Pharmacology and Toxicology, Institute of Pharmacy, Center for Molecular Biosciences Innsbruck, University of Innsbruck, Innsbruck, Austria.
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48
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Joel D. The signal attenuation rat model of obsessive-compulsive disorder: a review. Psychopharmacology (Berl) 2006; 186:487-503. [PMID: 16718482 DOI: 10.1007/s00213-006-0387-2] [Citation(s) in RCA: 54] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/14/2005] [Accepted: 03/17/2006] [Indexed: 11/26/2022]
Abstract
During the last 30 years, there have been many attempts to develop animal models of obsessive-compulsive disorder (OCD), in the hope that they may provide a route for furthering our understanding and treatment of this disorder. The present paper reviews a recently developed rat model of OCD, namely, signal attenuation. Results of pharmacological and lesion studies are presented and evaluated with respect to the pharmacology and pathophysiology of OCD. It is argued that signal attenuation is a rat model of OCD with construct (derived from similarity in the underlying mechanisms), predictive (derived from similarity in response to treatment), and face (derived from phenomenological similarity between "compulsive" behavior in the model and compulsions in OCD patients) validity.
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Affiliation(s)
- Daphna Joel
- Department of Psychology, Tel Aviv University, Ramat-Aviv, Tel Aviv, 69978, Israel.
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Joel D. Current animal models of obsessive compulsive disorder: a critical review. Prog Neuropsychopharmacol Biol Psychiatry 2006; 30:374-88. [PMID: 16457927 DOI: 10.1016/j.pnpbp.2005.11.006] [Citation(s) in RCA: 120] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 11/02/2005] [Indexed: 12/12/2022]
Abstract
During the last 30 years there have been many attempts to develop animal models of obsessive compulsive disorder (OCD), in the hope that they may provide a route for furthering our understanding and treatment of this disorder. The present paper reviews current genetic, pharmacological and behavioral animal models of OCD, and evaluates their face validity (derived from phenomenological similarity between the behavior in the animal model and the specific symptoms of the human condition), predictive validity (derived from similarity in response to treatment) and construct validity (derived from similarity in the underlying mechanisms--physiological or psychological).
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Affiliation(s)
- Daphna Joel
- Department of Psychology, Tel Aviv University, Ramat-Aviv, Tel Aviv 69978, Israel.
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50
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Salchner P, Sartori SB, Sinner C, Wigger A, Frank E, Landgraf R, Singewald N. Airjet and FG-7142-induced Fos expression differs in rats selectively bred for high and low anxiety-related behavior. Neuropharmacology 2006; 50:1048-58. [PMID: 16620881 DOI: 10.1016/j.neuropharm.2006.02.008] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2005] [Revised: 02/07/2006] [Accepted: 02/15/2006] [Indexed: 10/24/2022]
Abstract
We reported recently that two rat lines bred for either high (HAB) or low (LAB) anxiety-related behavior display differential Fos expression in restricted parts of the fear/anxiety circuitry when exposed to mild anxiety evoked in exploratory anxiety tests. Since different forms of anxiety are thought to activate different parts of the anxiety circuitry, we investigated now whether (1) an aversive stimulus which elicits escape behavior (airjet) and (2) the anxiogenic/panicogenic drug FG-7142 would reveal further differences in Fos expression as a marker of neuronal activation between HAB and LAB rats. Both airjet exposure and FG-7142 induced Fos expression in both lines in various anxiety-related brain areas. HAB rats, which displayed exaggerated escape responses during airjet exposure, exhibited increased Fos expression in brain areas including the hypothalamus, periaqueductal gray and locus coeruleus, as well as blunted Fos activation in the cingulate cortex in response to airjet and/or FG-7142. The results corroborate previous findings showing that trait anxiety affects neuronal excitability in hypothalamic and medial prefrontal areas. Furthermore, by using airjet as well as FG-7142, we now reveal that enhanced trait anxiety is also associated with neuronal hyperexcitability in the locus coeruleus and the periaqueductal gray, suggesting that investigation of an array of different anxiogenic stimuli is important for the detection of altered neuronal processing in trait anxiety.
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Affiliation(s)
- Peter Salchner
- Department of Pharmacology and Toxicology, Institute of Pharmacy and Center of Molecular Biosciences Innsbruck, University of Innsbruck, Peter-Mayr-Strasse 1, A-6020 Innsbruck, Austria
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