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Eck SR, Kokras N, Wicks B, Baltimas P, Hall A, van Bendegem N, Salvatore M, Cohen SR, Bergmann J, Ceretti A, Parikh V, Dalla C, Bangasser DA. Corticotropin releasing factor in the nucleus basalis of Meynert impairs attentional performance and reduces levels of glutamate and taurine in male and female rats. Neuropharmacology 2022; 221:109280. [PMID: 36216029 PMCID: PMC9883789 DOI: 10.1016/j.neuropharm.2022.109280] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2022] [Revised: 09/06/2022] [Accepted: 10/04/2022] [Indexed: 11/08/2022]
Abstract
Psychiatric disorders that are characterized by impairments in sustained attention, including attention deficit hyperactivity disorder (ADHD), post-traumatic stress disorder (PTSD), and major depression are also sensitive to exacerbation by stress. Sustained attention relies on cholinergic and non-cholinergic projections from the nucleus basalis of Meynert (NBM) in the basal forebrain to the medial prefrontal cortex (mPFC). We have previously shown that central administration of the stress neuropeptide corticotropin releasing factor (CRF) impairs performance on the sustained attention task (SAT) in adult male and female rats. The present study investigated whether this effect was mediated by CRF's action in the NBM. Rats were administered CRF in the NBM and subsequent SAT performance was measured. A high dose of CRF (100 ng) significantly impaired performance on non-signaled events across sex. Because performance on non-signaled events is believed to depend on non-cholinergic (i.e., GABA and glutamate) signaling, high performance liquid chromatography was used to quantify amino acid levels in the NBM and mPFC. We found females have higher levels of glutamate, glutamine, GABA glycine, and alanine in the NBM than males. Importantly, CRF in the NBM led to a local decrease of taurine and several amino acids involved in glutamate synthesis in males and females, changes which may mediate the CRF-induced SAT performance deficit. Together these studies suggest that CRF regulation of amino acids in the NMB contributes to stress-induced attention deficits.
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Affiliation(s)
- Samantha R Eck
- Department of Psychology and Neuroscience, Temple University, Philadelphia, PA 19122, USA
| | - Nikolaos Kokras
- Department of Pharmacology, Medical School, National and Kapodistrian University of Athens, Mikras Asias 75, 11527, Goudi, Athens, Greece; First Department of Psychiatry, Eginition Hospital, Medical School, National and Kapodistrian University of Athens, Greece
| | - Brittany Wicks
- Department of Psychology and Neuroscience, Temple University, Philadelphia, PA 19122, USA
| | - Petros Baltimas
- Department of Pharmacology, Medical School, National and Kapodistrian University of Athens, Mikras Asias 75, 11527, Goudi, Athens, Greece
| | - Arron Hall
- Department of Psychology and Neuroscience, Temple University, Philadelphia, PA 19122, USA
| | - Nina van Bendegem
- Department of Psychology and Neuroscience, Temple University, Philadelphia, PA 19122, USA
| | - Madeleine Salvatore
- Department of Psychology and Neuroscience, Temple University, Philadelphia, PA 19122, USA
| | - Sarah R Cohen
- Department of Psychology and Neuroscience, Temple University, Philadelphia, PA 19122, USA
| | - Joy Bergmann
- Department of Psychology and Neuroscience, Temple University, Philadelphia, PA 19122, USA
| | - Attilio Ceretti
- Department of Psychology and Neuroscience, Temple University, Philadelphia, PA 19122, USA
| | - Vinay Parikh
- Department of Psychology and Neuroscience, Temple University, Philadelphia, PA 19122, USA
| | - Christina Dalla
- Department of Pharmacology, Medical School, National and Kapodistrian University of Athens, Mikras Asias 75, 11527, Goudi, Athens, Greece
| | - Debra A Bangasser
- Department of Psychology and Neuroscience, Temple University, Philadelphia, PA 19122, USA; Neuroscience Institute, Georgia State University, Atlanta, GA 30303, USA.
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Deng J, Wu Q, Gao H, Ou Q, Wu B, Yan B, Jiang C. Molecular Characterization and Directed Evolution of a Metagenome-Derived l-Cysteine Sulfinate Decarboxylase. Food Technol Biotechnol 2018; 56:117-123. [PMID: 29796005 DOI: 10.17113/ftb.56.01.18.5415] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
l-Cysteine sulfinate decarboxylase (CSD, EC 4.1.1.29), the rate-limiting enzyme in taurine synthesis pathway, catalyzes l-cysteine sulfinic acid to form hypotaurine. Identification of the novel CSD that could improve the biosynthetic efficiency of taurine is important. An unexplored decarboxylase gene named undec1A was identified in a previous work through sequence-based screening of uncultured soil microorganisms. Random mutagenesis through sequential error-prone polymerase chain reaction was used in Undec1A. A mutant Undec1A-1180, which was obtained from mutagenesis library, had 5.62-fold higher specific activity than Undec1A at 35 °C and pH=7.0. Molecular docking results indicated that amino acid residues Ala235, Val237, Asp239, Ile267, Ala268, and Lys298 in the Undec1A-1180 protein helped recognize and catalyze the substrate molecules of l-cysteine sulfinic acid. These results could serve as a basis for elucidating the characteristics of the Undec1A-1180. Directed evolution technology is a convenient way to improve the biotechnological applications of metagenome-derived genes.
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Affiliation(s)
- Jie Deng
- Guangxi Key Laboratory of Mangrove Conservation and Utilization, Guangxi Mangrove Research Center, Guangxi Academy of Sciences, 92 Changqing Rd., Beihai, Guangxi, PR China.,State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, College of Life Science and Technology, Guangxi University, 100 Daxue Rd., Nanning, Guangxi, PR China
| | - Qiaofen Wu
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, College of Life Science and Technology, Guangxi University, 100 Daxue Rd., Nanning, Guangxi, PR China
| | - Hua Gao
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, College of Life Science and Technology, Guangxi University, 100 Daxue Rd., Nanning, Guangxi, PR China
| | - Qian Ou
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, College of Life Science and Technology, Guangxi University, 100 Daxue Rd., Nanning, Guangxi, PR China
| | - Bo Wu
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, College of Life Science and Technology, Guangxi University, 100 Daxue Rd., Nanning, Guangxi, PR China
| | - Bing Yan
- Guangxi Key Laboratory of Mangrove Conservation and Utilization, Guangxi Mangrove Research Center, Guangxi Academy of Sciences, 92 Changqing Rd., Beihai, Guangxi, PR China
| | - Chengjian Jiang
- Guangxi Key Laboratory of Mangrove Conservation and Utilization, Guangxi Mangrove Research Center, Guangxi Academy of Sciences, 92 Changqing Rd., Beihai, Guangxi, PR China.,State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, College of Life Science and Technology, Guangxi University, 100 Daxue Rd., Nanning, Guangxi, PR China
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Chaves EMC, Honório-Júnior JER, Sousa CNS, Monteiro VS, Nonato DTT, Dantas LP, Lúcio ASSC, Barbosa-Filho JM, Patrocínio MCA, Viana GSB, Vasconcelos SMM. The anxiolytic-like effect of 6-styryl-2-pyrone in mice involves GABAergic mechanism of action. Metab Brain Dis 2018; 33:139-149. [PMID: 29086102 DOI: 10.1007/s11011-017-0139-5] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/22/2016] [Accepted: 10/23/2017] [Indexed: 10/18/2022]
Abstract
The present work aims to investigate the anxiolytic activity of 6-styryl-2-pyrone (STY), obtained from Aniba panurensis, in behavioral tests and amino acids dosage on male Swiss mice. The animals were treated with STY (1, 10 or 20 mg), diazepam (DZP 1 or 2 mg/kg) or imipramine (IMI 30 mg/kg). Some groups were administered with flumazenil, 30 min before administration of the STYor DZP. The behavioral tests performed were open field, rota rod, elevated plus maze (EPM), hole-board (HB) and tail suspension test (TST). After behavioral tests, these animals were sacrificed and had their prefrontal cortex (PFC), hippocampus (HC) and striatum (ST) dissected for assaying amino acids (aspartate- ASP, glutamate- GLU, glycine- GLY, taurine- TAU and Gamma-aminobutyric acid- GABA). In EPM test, STY or DZP increased the number of entries and the time of permanence in the open arms, but these effects were reverted by flumazenil. In the HB test, STY increased the number of head dips however this effect was blocked by flumazenil. The effects of the STY on amino acid concentration in PFC showed increased GLU, GABA and TAU concentrations. In hippocampus, STY increased the concentrations of all amino acids studied. In striatum, STY administration at lowest dose reduced GLU concentrations, while the highest dosage caused the opposite effect. GLI, TAU and GABA concentrations increased with STY administration at highest doses. In conclusion, this study showed that STY presents an anxiolytic-like effect in behavioral tests that probably is related to GABAergic mechanism of action.
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Affiliation(s)
- Edna Maria Camelo Chaves
- Department of Physiology and Pharmacology, Faculty of Medicine, Federal University of Ceará, Street Cel. Nunes de Melo 1127, CEP 60431-270, Fortaleza, Brazil
- Institute of Biomedical Sciences, State University of Ceará, Fortaleza, CE, Brazil
| | - Jose Eduardo Ribeiro Honório-Júnior
- Department of Physiology and Pharmacology, Faculty of Medicine, Federal University of Ceará, Street Cel. Nunes de Melo 1127, CEP 60431-270, Fortaleza, Brazil
- Health Science Center, School of Medicine, University Centre Christus, Fortaleza, CE, Brazil
| | - Caren Nádia Soares Sousa
- Department of Physiology and Pharmacology, Faculty of Medicine, Federal University of Ceará, Street Cel. Nunes de Melo 1127, CEP 60431-270, Fortaleza, Brazil
| | | | | | - Leonardo Pimentel Dantas
- Department of Physiology and Pharmacology, Faculty of Medicine, Federal University of Ceará, Street Cel. Nunes de Melo 1127, CEP 60431-270, Fortaleza, Brazil
| | | | | | | | - Glauce Socorro Barros Viana
- Department of Physiology and Pharmacology, Faculty of Medicine, Federal University of Ceará, Street Cel. Nunes de Melo 1127, CEP 60431-270, Fortaleza, Brazil
| | - Silvânia Maria Mendes Vasconcelos
- Department of Physiology and Pharmacology, Faculty of Medicine, Federal University of Ceará, Street Cel. Nunes de Melo 1127, CEP 60431-270, Fortaleza, Brazil.
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Mezzomo NJ, Silveira A, Giuliani GS, Quadros VA, Rosemberg DB. The role of taurine on anxiety-like behaviors in zebrafish: A comparative study using the novel tank and the light–dark tasks. Neurosci Lett 2016; 613:19-24. [DOI: 10.1016/j.neulet.2015.12.037] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2015] [Revised: 12/16/2015] [Accepted: 12/17/2015] [Indexed: 12/22/2022]
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Bodega G, Suárez I, López-Fernández LA, García MI, Köber M, Penedo M, Luna M, Juárez S, Ciordia S, Oria M, Córdoba J, Fernández B. Ammonia induces aquaporin-4 rearrangement in the plasma membrane of cultured astrocytes. Neurochem Int 2012; 61:1314-24. [PMID: 23022607 DOI: 10.1016/j.neuint.2012.09.008] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2012] [Revised: 09/06/2012] [Accepted: 09/13/2012] [Indexed: 11/30/2022]
Abstract
Aquaporin-4 (AQP4) is a water channel protein mainly located in the astroglial plasma membrane, the precise function of which in the brain edema that accompanies hepatic encephalopathy (HE) is unclear. Since ammonia is the main pathogenic agent in HE, its effect on AQP4 expression and distribution in confluent primary astroglial cultures was examined via their exposure to ammonium chloride (1, 3 and 5 mM) for 5 and 10 days. Ammonia induced the general inhibition of AQP4 mRNA synthesis except in the 1 mM/5 day treatment. However, the AQP4 protein content measured was dependent on the method of analysis; an apparent increase was recorded in treated cells in in-cell Western assays, while an apparent reduction was seen with the classic Western blot method, perhaps due to differences in AQP4 aggregation. Ammonia might therefore induce the formation of insoluble AQP4 aggregates in the astroglial plasma membrane. The finding of AQP4 in the pellet of classic Western blot samples, plus data obtained via confocal microscopy, atomic force microscopy (using immunolabeled cells with gold nanoparticles) and scanning electron microscopy, all corroborate this hypothesis. The effect of ammonia on AQP4 seems not to be due to any osmotic effect; identical osmotic stress induced by glutamine and salt had no significant effect on the AQP4 content. AQP4 functional analysis (subjecting astrocytes to a hypo-osmotic medium and using flow cytometry to measure cell size) demonstrated a smaller water influx in ammonia-treated astrocytes suggesting that AQP4 aggregates are representative of an inactive status; however, more confirmatory studies are required to fully understand the functional status of AQP4 aggregates. The present results suggest that ammonia affects AQP4 expression and distribution, and that astrocytes change their expression of AQP4 mRNA as well as the aggregation status of the ensuing protein depending on the ammonia concentration and duration of exposure.
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Affiliation(s)
- Guillermo Bodega
- Departamento de Biología Celular y Genética, Facultad de Biología, Universidad de Alcalá, 28871 Alcalá de Henares, Madrid, Spain.
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