1
|
Li P, Wang T, Guo H, Liu Y, Zhao H, Ren T, Tang Y, Wang Y, Zou M. Pramipexole improves depression-like behavior in diabetes mellitus with depression rats by inhibiting NLRP3 inflammasome-mediated neuroinflammation and preventing impaired neuroplasticity. J Affect Disord 2024; 356:586-596. [PMID: 38657764 DOI: 10.1016/j.jad.2024.04.073] [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: 01/02/2024] [Revised: 04/09/2024] [Accepted: 04/21/2024] [Indexed: 04/26/2024]
Abstract
BACKGROUND Diabetes mellitus (DM) is frequently associated with the occurrence and development of depression, and the co-occurrence of diabetes mellitus with depression (DD) may further reduce patients' quality of life. Recent research indicates that dopamine receptors (DRs) play a crucial role in immune and metabolic regulation. Pramipexole (PPX), a D2/3R agonist, has demonstrated promising neuroprotective and immunomodulatory effects. Nevertheless, the therapeutic effects and mechanisms of action of PPX on DM-induced depression are not clear at present. METHODS Depression, DM, and DD were induced in a rat model through a combination of a high-fat diet (HFD) supplemented with streptozotocin (STZ) and chronic unpredictable mild stress (CUMS) combined with solitary cage rearing. The pathogenesis of DD and the neuroprotective effects of DRs agonists were investigated using behavioral assays, enzyme-linked immunosorbent assay (ELISA), hematoxylin-eosin (HE) staining, Nissl staining, Western blotting (WB) and immunofluorescence (IF). RESULTS DD rats exhibited more severe dopaminergic, neuroinflammatory, and neuroplastic impairments and more pronounced depressive behaviors than rats with depression alone or DM. Our findings suggest that DRs agonists have significant therapeutic effects on DD rats and that PPX improved neuroplasticity and decreased neuroinflammation in the hippocampus of DD rats while also promoting DG cell growth and differentiation, ultimately mitigating depression-like behaviors. LIMITATION Our study is based on a rat model. Further evidence is needed to determine whether the therapeutic effects of PPX apply to patients suffering from DD. CONCLUSIONS Neuroinflammation mediated by damage to the dopaminergic system is one of the key pathogenic mechanisms of DD. We provide evidence that PPX has a neuroprotective effect on the hippocampus in DD rats and the mechanism may involve the inhibition of NOD-, LRR- and pyrin domain-containing protein 3 (NLRP3) inflammasome activation by DRs to attenuate the neuroinflammatory response and neuroplasticity damage.
Collapse
Affiliation(s)
- Ping Li
- Hunan University of Chinese Medicine, Changsha 410208, Hunan, China
| | - Tingting Wang
- Hunan University of Chinese Medicine, Changsha 410208, Hunan, China
| | - Haipeng Guo
- Hunan University of Chinese Medicine, Changsha 410208, Hunan, China
| | - Yingxi Liu
- Hunan University of Chinese Medicine, Changsha 410208, Hunan, China
| | - Hongqing Zhao
- Hunan University of Chinese Medicine, Changsha 410208, Hunan, China; Hunan Provincial Key Laboratory of Prevention and Treatment of Depressive Diseases with Traditional Chinese Medicine, Changsha 410208, Hunan, China
| | - Tingting Ren
- Hunan University of Chinese Medicine, Changsha 410208, Hunan, China
| | - Yingjuan Tang
- Hunan University of Chinese Medicine, Changsha 410208, Hunan, China
| | - Yuhong Wang
- Hunan University of Chinese Medicine, Changsha 410208, Hunan, China; Hunan Provincial Key Laboratory of Prevention and Treatment of Depressive Diseases with Traditional Chinese Medicine, Changsha 410208, Hunan, China.
| | - Manshu Zou
- Hunan University of Chinese Medicine, Changsha 410208, Hunan, China; Hunan Provincial Key Laboratory of Prevention and Treatment of Depressive Diseases with Traditional Chinese Medicine, Changsha 410208, Hunan, China.
| |
Collapse
|
2
|
Qi XG, Wu J, Zhao L, Wang L, Guang X, Garber PA, Opie C, Yuan Y, Diao R, Li G, Wang K, Pan R, Ji W, Sun H, Huang ZP, Xu C, Witarto AB, Jia R, Zhang C, Deng C, Qiu Q, Zhang G, Grueter CC, Wu D, Li B. Adaptations to a cold climate promoted social evolution in Asian colobine primates. Science 2023; 380:eabl8621. [PMID: 37262163 DOI: 10.1126/science.abl8621] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2021] [Accepted: 07/06/2022] [Indexed: 06/03/2023]
Abstract
The biological mechanisms that underpin primate social evolution remain poorly understood. Asian colobines display a range of social organizations, which makes them good models for investigating social evolution. By integrating ecological, geological, fossil, behavioral, and genomic analyses, we found that colobine primates that inhabit colder environments tend to live in larger, more complex groups. Specifically, glacial periods during the past 6 million years promoted the selection of genes involved in cold-related energy metabolism and neurohormonal regulation. More-efficient dopamine and oxytocin pathways developed in odd-nosed monkeys, which may have favored the prolongation of maternal care and lactation, increasing infant survival in cold environments. These adaptive changes appear to have strengthened interindividual affiliation, increased male-male tolerance, and facilitated the stepwise aggregation from independent one-male groups to large multilevel societies.
Collapse
Affiliation(s)
- Xiao-Guang Qi
- College of Life Sciences, Northwest University, Xi'an, China
| | - Jinwei Wu
- College of Life Sciences, Northwest University, Xi'an, China
| | - Lan Zhao
- College of Life Sciences, Northwest University, Xi'an, China
| | - Lu Wang
- College of Life Sciences, Northwest University, Xi'an, China
| | | | - Paul A Garber
- Department of Anthropology, University of Illinois, Urbana, IL, USA
| | - Christopher Opie
- Department of Anthropology and Archaeology, University of Bristol, Bristol, UK
| | - Yuan Yuan
- College of Ecological and Environmental Sciences, Northwestern Polytechnical University, Xi'an, China
| | - Runjie Diao
- College of Life Sciences, Nanjing Normal University, Nanjing, China
| | - Gang Li
- College of Life Sciences, Shaanxi Normal University, Xi'an, China
| | - Kun Wang
- College of Ecological and Environmental Sciences, Northwestern Polytechnical University, Xi'an, China
| | - Ruliang Pan
- College of Life Sciences, Northwest University, Xi'an, China
| | - Weihong Ji
- School of Natural and Computational Sciences, Massey University, Auckland, New Zealand
| | | | - Zhi-Pang Huang
- College of Life Sciences, Northwest University, Xi'an, China
| | - Chunzhong Xu
- Shanghai Wild Animal Park Development Co., Shanghai, China
| | - Arief B Witarto
- Faculty of Medicine, Universitas Pertahanan, Jabodetabek, Indonesia
| | - Rui Jia
- College of Life Sciences, Shaanxi Normal University, Xi'an, China
| | | | - Cheng Deng
- College of Life Sciences, Nanjing Normal University, Nanjing, China
| | - Qiang Qiu
- College of Ecological and Environmental Sciences, Northwestern Polytechnical University, Xi'an, China
| | - Guojie Zhang
- Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming, China
| | - Cyril C Grueter
- School of Human Sciences, The University of Western Australia, Perth, WA, Australia
| | - Dongdong Wu
- Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming, China
| | - Baoguo Li
- College of Life Sciences, Northwest University, Xi'an, China
| |
Collapse
|
3
|
Mohammadi M, Eskandari K, Azizbeigi R, Haghparast A. The inhibitory effect of cannabidiol on the rewarding properties of methamphetamine in part mediates by interacting with the hippocampal D1-like dopamine receptors. Prog Neuropsychopharmacol Biol Psychiatry 2023; 126:110778. [PMID: 37100273 DOI: 10.1016/j.pnpbp.2023.110778] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/17/2023] [Revised: 04/15/2023] [Accepted: 04/21/2023] [Indexed: 04/28/2023]
Abstract
Cannabidiol (CBD) is a potential treatment to decrease the rewarding properties of psychostimulants. However, the exact mechanism and distinct neuroanatomical areas responsible for the CBD's effects remain unclear. Indicatively, the D1-like dopamine receptors (D1R) in the hippocampus (HIP) are essential for expressing and acquiring drug-associated conditioned place preference (CPP). Therefore, given that involving D1Rs in reward-related behaviors and the encouraging results of CBD in attenuating the psychostimulant's rewarding effects, the present study sought to investigate the role of D1Rs of the hippocampal dentate gyrus (DG) in the inhibitory effects of CBD on the acquisition and expression of METH-induced CPP. To this end, over a 5-day conditioning period by METH (1 mg/kg; sc), different groups of rats were given intra-DG SCH23390 (0.25, 1, or 4 μg/0.5 μl, saline) as a D1Rs antagonist before ICV administration of CBD (10 μg/5 μl, DMSO12%). In addition, a different set of animals, after the conditioning period, received a single dose of SCH23390 (0.25, 1, or 4 μg/0.5 μl) before CBD (50 μg/5 μl) administration on the expression day. The results showed that SCH23390 (1 and 4 μg) significantly reduced the suppressive effects of CBD on the acquisition of METH place preference (P < 0.05 and P < 0.001, respectively). Furthermore, the highest dose of SCH23390 (4 μg) in the expression phase remarkably abolished the preventive effects of CBD on the expression of METH-seeking behavior (P < 0.001). In conclusion, the current study revealed that CBD's inhibitory effect on rewarding properties of METH partially acts through D1Rs in the DG area of the HIP.
Collapse
Affiliation(s)
- Mahsa Mohammadi
- Department of Physiology, Faculty of Veterinary Science, Islamic Azad University, Sanandaj Branch, Sanandaj, Iran
| | - Kiarash Eskandari
- Neuroscience Research Center, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Ronak Azizbeigi
- Department of Physiology, Faculty of Veterinary Science, Islamic Azad University, Sanandaj Branch, Sanandaj, Iran.
| | - Abbas Haghparast
- Neuroscience Research Center, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran; School of Cognitive Sciences, Institute for Research in Fundamental Sciences, Tehran, Iran; Department of Basic Sciences, Iranian Academy of Medical Sciences, Tehran, Iran.
| |
Collapse
|
4
|
Legros C, Rojas A, Dupré C, Brasseur C, Riest‐Fery I, Muller O, Ortuno J, Nosjean O, Guenin S, Ferry G, Boutin JA. Approach to the specificity and selectivity between D2 and D3 receptors by mutagenesis and binding experiments part I: Expression and characterization of D2 and D3 receptor mutants. Protein Sci 2022; 31:e4459. [PMID: 36177735 PMCID: PMC9667827 DOI: 10.1002/pro.4459] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2022] [Revised: 08/22/2022] [Accepted: 09/25/2022] [Indexed: 12/13/2022]
Abstract
D3/D2 sub-specificity is a complex problem to solve. Indeed, in the absence of easy structural biology of the G-protein coupled receptors, and despite key progresses in this area, the systematic knowledge of the ligand/receptor relationship is difficult to obtain. Due to these structural biology limitations concerning membrane proteins, we favored the use of directed mutagenesis to document a rational towards the discovery of markedly specific D3 ligands over D2 ligands together with basic binding experiments. Using our methodology of stable expression of receptors in HEK cells, we constructed the gene encoding for 24 mutants and 4 chimeras of either D2 or D3 receptors and expressed them stably. Those cell lines, expressing a single copy of one receptor mutant each, were stably constructed, selected, amplified and the membranes from them were prepared. Binding data at those receptors were obtained using standard binding conditions for D2 and D3 dopamine receptors. We generated 26 new molecules derived from D2 or D3 ligands. Using 8 reference compounds and those 26 molecules, we characterized their binding at those mutants and chimeras, exemplifying an approach to better understand the difference at the molecular level of the D2 and D3 receptors. Although all the individual results are presented and could be used for minute analyses, the present report does not discuss the differences between D2 and D3 data. It simply shows the feasibility of the approach and its potential.
Collapse
Affiliation(s)
- Céline Legros
- Pôle d'expertise Biotechnologie, Chimie, BiologieInstitut de Recherches ServierCroissy‐sur‐SeineFrance
| | - Anne Rojas
- Chimie MédicinaleInstitut de Recherches ServierCroissy‐sur‐SeineFrance
| | - Clémence Dupré
- Pôle d'expertise Biotechnologie, Chimie, BiologieInstitut de Recherches ServierCroissy‐sur‐SeineFrance
| | - Chantal Brasseur
- Pôle d'expertise Biotechnologie, Chimie, BiologieInstitut de Recherches ServierCroissy‐sur‐SeineFrance
| | - Isabelle Riest‐Fery
- Pôle d'expertise Biotechnologie, Chimie, BiologieInstitut de Recherches ServierCroissy‐sur‐SeineFrance
| | - Olivier Muller
- Chimie MédicinaleInstitut de Recherches ServierCroissy‐sur‐SeineFrance
| | | | - Olivier Nosjean
- Pôle d'expertise Biotechnologie, Chimie, BiologieInstitut de Recherches ServierCroissy‐sur‐SeineFrance
| | - Sophie‐Pénélope Guenin
- Pôle d'expertise Biotechnologie, Chimie, BiologieInstitut de Recherches ServierCroissy‐sur‐SeineFrance
| | - Gilles Ferry
- Pôle d'expertise Biotechnologie, Chimie, BiologieInstitut de Recherches ServierCroissy‐sur‐SeineFrance
| | - Jean A. Boutin
- Pôle d'expertise Biotechnologie, Chimie, BiologieInstitut de Recherches ServierCroissy‐sur‐SeineFrance
- Laboratory of Neuronal and Neuroendocrine Differentiation and CommunicationUniversity of NormandyRouenFrance
| |
Collapse
|
5
|
Characterizing aripiprazole and its ester derivatives, lauroxil and cavoxil, in interaction with dopamine D2 receptor: Molecular docking and dynamics simulations with physicochemical appraisals. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.119787] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
|
6
|
Teng X, Chen S, Wang Q, Chen Z, Wang X, Huang N, Zheng S. Structural insights into G protein activation by D1 dopamine receptor. SCIENCE ADVANCES 2022; 8:eabo4158. [PMID: 35687690 PMCID: PMC9187227 DOI: 10.1126/sciadv.abo4158] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/02/2022] [Accepted: 04/28/2022] [Indexed: 06/15/2023]
Abstract
G protein-coupled receptors (GPCRs) comprise the largest family of membrane receptors and are the most important drug targets. An agonist-bound GPCR engages heterotrimeric G proteins and triggers the exchange of guanosine diphosphate (GDP) with guanosine triphosphate (GTP) to promote G protein activation. A complete understanding of molecular mechanisms of G protein activation has been hindered by a lack of structural information of GPCR-G protein complex in nucleotide-bound states. Here, we report the cryo-EM structures of the D1 dopamine receptor and mini-Gs complex in the nucleotide-free and nucleotide-bound states. These structures reveal major conformational changes in Gα such as structural rearrangements of the carboxyl- and amino-terminal α helices that account for the release of GDP and the GTP-dependent dissociation of Gα from Gβγ subunits. As validated by biochemical and cellular signaling studies, our structures shed light into the molecular basis of the entire signaling events of GPCR-mediated G protein activation.
Collapse
Affiliation(s)
- Xiao Teng
- Tsinghua Institute of Multidisciplinary Biomedical Research, Tsinghua University, Beijing, China
- National Institute of Biological Sciences, Beijing, China
| | - Sijia Chen
- National Institute of Biological Sciences, Beijing, China
- Graduate School of Peking Union Medical College, Beijing, China
| | - Qing Wang
- National Institute of Biological Sciences, Beijing, China
- School of Pharmaceutical Science and Technology, Tianjin University, Tianjin, China
| | - Zhao Chen
- Tsinghua Institute of Multidisciplinary Biomedical Research, Tsinghua University, Beijing, China
- National Institute of Biological Sciences, Beijing, China
| | - Xiaoying Wang
- National Institute of Biological Sciences, Beijing, China
| | - Niu Huang
- Tsinghua Institute of Multidisciplinary Biomedical Research, Tsinghua University, Beijing, China
- National Institute of Biological Sciences, Beijing, China
| | - Sanduo Zheng
- Tsinghua Institute of Multidisciplinary Biomedical Research, Tsinghua University, Beijing, China
- National Institute of Biological Sciences, Beijing, China
- Graduate School of Peking Union Medical College, Beijing, China
| |
Collapse
|
7
|
The influence of estradiol and progesterone on neurocognition during three phases of the menstrual cycle: Modulating factors. Behav Brain Res 2022; 417:113593. [PMID: 34560130 DOI: 10.1016/j.bbr.2021.113593] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2021] [Revised: 09/16/2021] [Accepted: 09/20/2021] [Indexed: 12/17/2022]
Abstract
Estradiol is an ovarian steroid hormone that peaks shortly before ovulation and significantly affects various brain regions and neurotransmitter systems, with similar and differential effects with progesterone, another ovarian hormone. Studies investigating the neurocognitive processes during the menstrual cycle have focused on the early follicular phase (EFP) characterized by low estradiol and progesterone levels and the mid-luteal phase (MLP) with high estradiol and progesterone levels. However, most studies have failed to include the ovulatory phase, characterized by high estradiol and low progesterone levels. Given the various hormonal changes in the menstrual cycle, we revisited studies suggesting that the menstrual cycle did not affect verbal and spatial abilities and observed that many contain mixed results. Comparing these studies makes it possible to identify relevant modulating factors, such as sample size, participant age, accurate selection of days for testing, asymmetrical practice effects, genetic polymorphisms, and task difficulty. More robust findings are related to improved mental rotation capacity during EFP with challenging tasks and differences in brain activation among menstrual cycle phases during the execution of spatial and verbal tasks. During MLP, less robust findings were observed, possibly modulated by the complex effects of the two hormones on the brain. In conclusion, we propose that it is crucial to include all three menstrual cycle phases and consider these modulating factors to avoid confounding findings.
Collapse
|
8
|
Amani P, Habibpour R, Karami L, Hofmann A. Docking Screens of Noncovalent Interaction Motifs of the Human Subtype-D2 Receptor-75 Schizophrenia Antipsychotic Complexes with Physicochemical Appraisal of Antipsychotics. ACS Chem Neurosci 2021; 12:2218-2232. [PMID: 34061513 DOI: 10.1021/acschemneuro.1c00229] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
Chemoinformatics appraisal and molecular docking were employed to investigate 225 complexes of 75 schizophrenia antipsychotics with the dopamine receptor subtypes D2R, D3R, and D4R. Considering the effective noncovalent interactions in the subtype-D2 receptor selectivity of antipsychotics, this study evaluated the possible physicochemical properties of ligands underlying the design of safer and more effective antipsychotics. The pan-assay interference compounds (PAINs) include about 25% of typical antipsychotics and 5% of atypicals. Popular antipsychotics like haloperidol, clozapine, risperidone, and aripiprazole are not PAINs. They have stronger interactions with D2R and D4R, but their interactions with D3R are slightly weaker, which is similar to the behavior of dopamine. In contrast to typical antipsychotics, atypical antipsychotics exhibit more noncovalent interactions with D4R than with D2R. These results suggest that selectivity to D2R and D4R comes from the synergy between hydrophobic and hydrogen-bonding interactions through their concomitant occurrence in the form of a hydrogen-bonding site adorned with hydrophobic contacts in antipsychotic-receptor complexes. All the antipsychotics had more synergic interactions with D2R and D4R in comparison with D3R. The atypical antipsychotics made a good distinction between the subtype D2 receptors with high selectivity to D4R. Among the popular antipsychotics, haloperidol, clozapine, and risperidone have hydrophobic-hydrogen-bonding synergy with D4R, while aripiprazole profits with D2R. The most important residue participating in the synergic interactions was threonine for D2R and cysteine for D4R. This work could be useful in informing and guiding future drug discovery and development studies aimed at receptor-specific antipsychotics.
Collapse
Affiliation(s)
- Parisa Amani
- Department of Chemical Technology, Iranian Research Organization for Science and Technology, Tehran 3313193685, Iran
| | - Razieh Habibpour
- Department of Chemical Technology, Iranian Research Organization for Science and Technology, Tehran 3313193685, Iran
| | - Leila Karami
- Department of Cell and Molecular Biology, Kharazmi University, Tehran 1571914911, Iran
| | - Andreas Hofmann
- Griffith Institute for Drug Discovery, Griffith University, Nathan 4111, Australia
- Department of Veterinary Biosciences, The University of Melbourne, Parkville 3010, Australia
| |
Collapse
|
9
|
A study of the structure-affinity relationship in SYA16263; is a D 2 receptor interaction essential for inhibition of apormorphine-induced climbing behavior in mice? Bioorg Med Chem 2021; 30:115943. [PMID: 33338898 DOI: 10.1016/j.bmc.2020.115943] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2020] [Revised: 12/02/2020] [Accepted: 12/07/2020] [Indexed: 11/24/2022]
Abstract
Dopamine (DA) and serotonin (5-HT) receptors are prime targets for the development of antipsychotics. The specific role of each receptor subtype to the pharmacological effects of antipsychotic drugs remains unclear. Understanding the relationship between antipsychotic drugs and their binding affinities at DA and 5-HT receptor subtypes is very important for antipsychotic drug discovery and could lead to new drugs with enhanced efficacies. We have previously disclosed SYA16263 (5) as an interesting compound with moderate radioligand binding affinity at the D2 & D3 receptors (Ki = 124 nM & 86 nM respectively) and high binding affinities towards D4 and 5-HT1A receptors (Ki = 3.5 nM & 1.1 nM respectively). Furthermore, we have demonstrated SYA16263 (5) is functionally selective and produces antipsychotic-like behavior but without inducing catalepsy in rats. Based on its pharmacological profile, we selected SYA16263 (5) to study its structure-affinity relationship with a view to obtaining new analogs that display receptor subtype selectivity. In this study, we present the synthesis of structurally modified SYA16263 (5) analogs and their receptor binding affinities at the DA and 5-HT receptor subtypes associated with antipsychotic action. Furthermore, we have identified compound 21 with no significant binding affinity at the D2 receptor subtype but with moderate binding affinity at the D3 and D4 receptors subtypes. However, because 21 is able to demonstrate antipsychotic-like activity in a preliminary test, using the reversal of apomorphine-induced climbing behavior experiment in mice with SYA16263 and haloperidol as positive controls, we question the essential need of the D2 receptor subtype in reversing apomorphine-induced climbing behavior.
Collapse
|
10
|
Minkley M, MacLeod P, Anderson CK, Nashmi R, Walter PB. Loss of tyrosine hydroxylase, motor deficits and elevated iron in a mouse model of phospholipase A2G6-associated neurodegeneration (PLAN). Brain Res 2020; 1748:147066. [PMID: 32818532 DOI: 10.1016/j.brainres.2020.147066] [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: 10/12/2019] [Revised: 07/22/2020] [Accepted: 08/15/2020] [Indexed: 10/23/2022]
Abstract
Phospholipase A2G6-associated neurodegeneration (PLAN) is a rare early-onset monogenic neurodegenerative movement disorder which targets the basal ganglia and other regions in the central and peripheral nervous system; presenting as a series of heterogenous subtypes in patients. We describe here a B6.C3-Pla2g6m1J/CxRwb mouse model of PLAN which presents with early-onset neurodegeneration at 90 days which is analogous of the disease progression that is observed in PLAN patients. Homozygous mice had a progressively worsening motor deficit, which presented as tremors starting at 65 days and progressed to severe motor dysfunction and increased falls on the wire hang test at 90 days. This motor deficit positively correlated with a reduction in tyrosine hydroxylase (TH) protein expression in dopaminergic neurons of the substantia nigra (SN) without any neuronal loss. Fluorescence imaging of Thy1-YFP revealed spheroid formation in the SN. The spheroids in homozygous mice strongly mirrors those observed in patients and were demonstrated to correlate strongly with the motor deficits as measured by the wire hang test. The appearance of spheroids preceded TH loss and increased spheroid numbers negatively correlated with TH expression. Perls/DAB staining revealed the presence of iron accumulation within the SN of mice. This mouse model captures many of the major hallmarks of PLAN including severe-early onset neurodegeneration, a motor deficit that correlates directly to TH levels, spheroid formation and iron accumulation within the basal ganglia. Thus, this mouse line is a useful tool for further research efforts to improve understanding of how these disease mechanisms give rise to the disease presentations seen in PLAN patients as well as to test novel therapies.
Collapse
Affiliation(s)
- Michael Minkley
- Department of Biology, Centre for Biomedical Research, University of Victoria, Canada
| | - Patrick MacLeod
- Division of Medical Genetics, Vancouver Island Health Authority, Victoria, BC, Canada; Department of Medical Genetics, University of British Columbia, Vancouver, BC, Canada
| | | | - Raad Nashmi
- Department of Biology, Centre for Biomedical Research, University of Victoria, Canada.
| | - Patrick B Walter
- Department of Biology, Centre for Biomedical Research, University of Victoria, Canada; Hematology/Oncology, UCSF Benioff Children's Hospital, Oakland, USA.
| |
Collapse
|
11
|
Role of hippocampal dopamine receptors in the antinociceptive responses induced by chemical stimulation of the lateral hypothalamus in animal model of acute pain. Brain Res 2020; 1734:146759. [DOI: 10.1016/j.brainres.2020.146759] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2019] [Revised: 01/30/2020] [Accepted: 02/29/2020] [Indexed: 01/07/2023]
|
12
|
Wang X, Wang ZB, Luo C, Mao XY, Li X, Yin JY, Zhang W, Zhou HH, Liu ZQ. The Prospective Value of Dopamine Receptors on Bio-Behavior of Tumor. J Cancer 2019; 10:1622-1632. [PMID: 31205518 PMCID: PMC6548012 DOI: 10.7150/jca.27780] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2018] [Accepted: 02/07/2019] [Indexed: 12/11/2022] Open
Abstract
Dopamine receptors are belong to the family of G protein-coupled receptor. There are five types of dopamine receptor (DR), including DRD1, DRD2, DRD3, DRD4, and DRD5, which are divided into two major groups: the D1-like receptors (DRD1 and DRD5), and the D2-like receptors (DRD2, DRD3, and DRD4). Dopamine receptors are involved in all of the physiological functions of dopamine, including the autonomic movement, emotion, hormonal regulation, dopamine-induced immune effects, and tumor behavior, and so on. Increasing evidence shows that dopamine receptors are associated with the regulation of tumor behavior, such as tumor cell death, proliferation, invasion, and migration. Recently, some studies showed that dopamine receptors could regulate several ways of death of the tumor cell, including apoptosis, autophagy-induced death, and ferroptosis, which cannot only directly affect tumor behavior, but also limit tumor progress via activating tumor immunity. In this review, we focus mainly on the function of the dopamine receptor on Bio-behavior of tumor as a potential therapeutic target.
Collapse
Affiliation(s)
- Xu Wang
- Department of Clinical Pharmacology, Xiangya Hospital, Central South University, Changsha 410008, P. R. China.,Institute of Clinical Pharmacology, Central South University, Hunan Key Laboratory of Pharmacogenetics, Changsha 410078, P. R. China
| | - Zhi-Bin Wang
- Department of Clinical Pharmacology, Xiangya Hospital, Central South University, Changsha 410008, P. R. China.,Institute of Clinical Pharmacology, Central South University, Hunan Key Laboratory of Pharmacogenetics, Changsha 410078, P. R. China
| | - Chao Luo
- Department of Clinical Pharmacology, Xiangya Hospital, Central South University, Changsha 410008, P. R. China.,Institute of Clinical Pharmacology, Central South University, Hunan Key Laboratory of Pharmacogenetics, Changsha 410078, P. R. China.,School of Life Sciences, Central South University, Changsha, Hunan 410078
| | - Xiao-Yuan Mao
- Department of Clinical Pharmacology, Xiangya Hospital, Central South University, Changsha 410008, P. R. China.,Institute of Clinical Pharmacology, Central South University, Hunan Key Laboratory of Pharmacogenetics, Changsha 410078, P. R. China
| | - Xi Li
- Department of Clinical Pharmacology, Xiangya Hospital, Central South University, Changsha 410008, P. R. China.,Institute of Clinical Pharmacology, Central South University, Hunan Key Laboratory of Pharmacogenetics, Changsha 410078, P. R. China
| | - Ji-Ye Yin
- Department of Clinical Pharmacology, Xiangya Hospital, Central South University, Changsha 410008, P. R. China.,Institute of Clinical Pharmacology, Central South University, Hunan Key Laboratory of Pharmacogenetics, Changsha 410078, P. R. China
| | - Wei Zhang
- Department of Clinical Pharmacology, Xiangya Hospital, Central South University, Changsha 410008, P. R. China.,Institute of Clinical Pharmacology, Central South University, Hunan Key Laboratory of Pharmacogenetics, Changsha 410078, P. R. China.,National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha 410008, P. R. China
| | - Hong-Hao Zhou
- Department of Clinical Pharmacology, Xiangya Hospital, Central South University, Changsha 410008, P. R. China.,Institute of Clinical Pharmacology, Central South University, Hunan Key Laboratory of Pharmacogenetics, Changsha 410078, P. R. China.,National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha 410008, P. R. China
| | - Zhao-Qian Liu
- Department of Clinical Pharmacology, Xiangya Hospital, Central South University, Changsha 410008, P. R. China.,Institute of Clinical Pharmacology, Central South University, Hunan Key Laboratory of Pharmacogenetics, Changsha 410078, P. R. China.,National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha 410008, P. R. China
| |
Collapse
|
13
|
Heyl DL, Champion M, Muterspaugh R, Connolly M, Baraka A, Khazaei P, Moe B, Al-Sheemary Z, Jaber N, Guy-Evans H. Characterizing the binding of dopamine D1-D2 receptors in vitro and in temporal and frontal lobe tissue total protein. FEBS Lett 2019; 593:732-742. [PMID: 30821397 DOI: 10.1002/1873-3468.13351] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2019] [Revised: 02/15/2019] [Accepted: 02/19/2019] [Indexed: 01/11/2023]
Abstract
Dysfunction of the dopaminergic pathway is linked to numerous diseases of the nervous system. The D1-D2 receptor heteromer is known to play a role in certain neuropsychiatric disorders, such as depression. Here, we synthesized an eight amino acid residue peptide, EAARRAQE, derived from the third intracellular loop of the D2 receptor and show that the peptide binds to the D1 receptor with comparable efficiency as that of the full-length D2 receptor protein. Moreover, immunoprecipitation studies show the existence of a heteromeric complex formed both in vitro and in total protein derived from temporal and frontal lobe tissue from normal and depressed subjects. The efficiency of the peptide to block the D1-D2 heteromeric complex was comparable in all the samples tested.
Collapse
Affiliation(s)
- Deborah L Heyl
- Chemistry Department, Eastern Michigan University, Ypsilanti, MI, USA
| | - Margaret Champion
- Chemistry Department, Eastern Michigan University, Ypsilanti, MI, USA
| | | | - Megan Connolly
- Chemistry Department, Eastern Michigan University, Ypsilanti, MI, USA
| | - Adam Baraka
- Chemistry Department, Eastern Michigan University, Ypsilanti, MI, USA
| | - Pouya Khazaei
- Chemistry Department, Eastern Michigan University, Ypsilanti, MI, USA
| | - Briana Moe
- Chemistry Department, Eastern Michigan University, Ypsilanti, MI, USA
| | | | - Nael Jaber
- Chemistry Department, Eastern Michigan University, Ypsilanti, MI, USA
| | - Hedeel Guy-Evans
- Chemistry Department, Eastern Michigan University, Ypsilanti, MI, USA
| |
Collapse
|
14
|
Del Río JP, Alliende MI, Molina N, Serrano FG, Molina S, Vigil P. Steroid Hormones and Their Action in Women's Brains: The Importance of Hormonal Balance. Front Public Health 2018; 6:141. [PMID: 29876339 PMCID: PMC5974145 DOI: 10.3389/fpubh.2018.00141] [Citation(s) in RCA: 91] [Impact Index Per Article: 15.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2017] [Accepted: 04/27/2018] [Indexed: 12/19/2022] Open
Abstract
Sex hormones significantly impact women's lives. Throughout the different stages of life, from menarche to menopause and all stages in between, women experience dramatic fluctuations in the levels of progesterone and estradiol, among other hormones. These fluctuations affect the body as a whole, including the central nervous system (CNS). In the CNS, sex hormones act via steroid receptors. They also have an effect on different neurotransmitters such as GABA, serotonin, dopamine, and glutamate. Additionally, studies show that sex hormones and their metabolites influence brain areas that regulate mood, behavior, and cognitive abilities. This review emphasizes the benefits a proper hormonal balance during the different stages of life has in the CNS. To achieve this goal, it is essential that hormone levels are evaluated considering a woman's age and ovulatory status, so that a correct diagnosis and treatment can be made. Knowledge of steroid hormone activity in the brain will give women and health providers an important tool for improving their health and well-being.
Collapse
Affiliation(s)
| | | | | | | | | | - Pilar Vigil
- Reproductive Health Research InstituteSantiago, Chile
- Vicerrectoría de ComunicacionesPontificia Universidad Católica de Chile, Santiago, Chile
| |
Collapse
|
15
|
Adachi N, Yoshimura A, Chiba S, Ogawa S, Kunugi H. Rotigotine, a dopamine receptor agonist, increased BDNF protein levels in the rat cortex and hippocampus. Neurosci Lett 2017; 662:44-50. [PMID: 28993209 DOI: 10.1016/j.neulet.2017.10.006] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2017] [Revised: 10/03/2017] [Accepted: 10/05/2017] [Indexed: 01/28/2023]
Abstract
Brain-derived neurotrophic factor (BDNF) critically controls the fate and function of the neuronal network and has received much attention as a target of many brain diseases. Dopaminergic system dysfunction has also been implicated in a variety of neuropsychiatric diseases. Rotigotine, a non-ergot dopamine receptor agonist, is used in the treatment of Parkinson's disease and restless legs syndrome. To investigate the effects of rotigotine on neuronal functions both in vivo and in vitro, rats and primary cortical neurons were administered rotigotine, and the mRNA and protein expression levels of BDNF, its receptor TrkB and downstream signaling molecules, and synaptic proteins were determined. We found that BDNF protein was increased in the cortex and hippocampus of rats after 7days of rotigotine treatment. In contrast, BDNF mRNAs were reduced 6h after rotigotine treatment in cultured neurons presumably through the transient suppression of neuronal activity. We identified differential expression of D1, D2, and D3 receptors in the rat brain and cultured neurons. The observed increase in the expression of BDNF protein in the cortex and hippocampus after subchronic administration of rotigotine suggests that it may exert its medical effect in part through improving BDNF function in the brain. In addition, our results highlight the complex relationships between rotigotine and BDNF expression, which depend on the brain region, time course, and dose of the drug.
Collapse
Affiliation(s)
- Naoki Adachi
- Department of Mental Disorder Research, National Institute of Neuroscience, National Center of Neurology and Psychiatry (NCNP), Tokyo, Japan; Department of Biomedical Chemistry, School of Science and Technology, Kwansei Gakuin University, Sanda City, Hyogo, Japan
| | - Aya Yoshimura
- Department of Mental Disorder Research, National Institute of Neuroscience, National Center of Neurology and Psychiatry (NCNP), Tokyo, Japan
| | - Shuichi Chiba
- Department of Mental Disorder Research, National Institute of Neuroscience, National Center of Neurology and Psychiatry (NCNP), Tokyo, Japan
| | - Shintaro Ogawa
- Department of Mental Disorder Research, National Institute of Neuroscience, National Center of Neurology and Psychiatry (NCNP), Tokyo, Japan
| | - Hiroshi Kunugi
- Department of Mental Disorder Research, National Institute of Neuroscience, National Center of Neurology and Psychiatry (NCNP), Tokyo, Japan.
| |
Collapse
|
16
|
Rabelo PCR, Horta NAC, Cordeiro LMS, Poletini MO, Coimbra CC, Szawka RE, Soares DD. Intrinsic exercise capacity in rats influences dopamine neuroplasticity induced by physical training. J Appl Physiol (1985) 2017; 123:1721-1729. [PMID: 28883047 DOI: 10.1152/japplphysiol.00506.2017] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
The study evaluates whether the intrinsic capacity for physical exercise influences dopamine neuroplasticity induced by physical training. Male rats were submitted to three progressive tests until fatigue. Based on the maximal time of exercise (TE), rats were considered as low performance (LP), standard performance (SP) or high performance (HP) to exercise. Eight animals from each group (LP, SP, and HP) were randomly subdivided in sedentary (SED) or trained (TR). Physical training was performed for 6 wk. After that, concentrations of dopamine (DA), serotonin (5-HT), and their metabolites and mRNA levels of D1 receptor ( Drd1), D2 receptor ( Drd2), dopamine transporter ( Dat), tyrosine hydroxylase ( Th), glia cell line neurotrophic factor ( Gdnf), and brain-derived neurotrophic factor ( Bdnf) were determined in the caudate-putamen (CPu). TE was increased with training in all performance groups. However, the relative increase was markedly higher in LP rats, and this was associated with a training-induced increase in dopaminergic activity in the CPu, which was determined by the 3,4-dihydroxyphenylacetic acid (DOPAC)/DA ratio. An opposite monoamine response was found in HP-TR rats, in which physical training decreased the DOPAC/DA ratio in the CPu. Moreover, LP-SED rats displayed higher levels of Drd2 in the CPu compared with the other SED groups, and this higher expression was decreased by physical training. Physical training also decreased Dat and increased Gdnf in the CPu of LP rats. Physical training decreased Bdnf in the CPu only in HP rats. Thus, we provide evidence that the intrinsic capacity to exercise affects the neuroplasticity of the dopaminergic system in response to physical training. NEW & NOTEWORTHY The findings reported reveal that dopaminergic neuroplasticity in caudate-putamen induced by physical training is influenced by the intrinsic capacity to exercise in rats. To evaluate the dopaminergic neuroplasticity, we analyzed mRNA levels of D1 receptor, D2 receptor, dopamine transporter, tyrosine hydroxylase, glia cell line neurotrophic factor, and brain-derived neurotrophic factor as well as concentrations of dopamine, serotonin, and their metabolites. These results expand our knowledge about the interrelationship between genetic background, physical training, and dopaminergic neuroplasticity.
Collapse
Affiliation(s)
- Patrícia C R Rabelo
- Laboratório de Fisiologia do Exercício, Departamento de Educação Física, Escola de Educação Física, Fisioterapia e Terapia Ocupacional, Universidade Federal de Minas Gerais , Belo Horizonte, Minas Gerais , Brazil
| | - Nayara A C Horta
- Departamento de Fisiologia e Biofísica, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais , Belo Horizonte, Minas Gerais , Brazil
| | - Letícia M S Cordeiro
- Laboratório de Fisiologia do Exercício, Departamento de Educação Física, Escola de Educação Física, Fisioterapia e Terapia Ocupacional, Universidade Federal de Minas Gerais , Belo Horizonte, Minas Gerais , Brazil.,Laboratório de Imunometabolismo, Departamento de Nutrição, Escola de Enfermagem, Universidade Federal de Minas Gerais , Belo Horizonte, Minas Gerais , Brazil
| | - Maristela O Poletini
- Departamento de Fisiologia e Biofísica, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais , Belo Horizonte, Minas Gerais , Brazil
| | - Cândido C Coimbra
- Departamento de Fisiologia e Biofísica, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais , Belo Horizonte, Minas Gerais , Brazil
| | - Raphael E Szawka
- Departamento de Fisiologia e Biofísica, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais , Belo Horizonte, Minas Gerais , Brazil
| | - Danusa D Soares
- Laboratório de Fisiologia do Exercício, Departamento de Educação Física, Escola de Educação Física, Fisioterapia e Terapia Ocupacional, Universidade Federal de Minas Gerais , Belo Horizonte, Minas Gerais , Brazil
| |
Collapse
|
17
|
Role of D2 dopamine receptors of the ventral pallidum in inhibitory avoidance learning. Behav Brain Res 2017; 321:99-105. [DOI: 10.1016/j.bbr.2017.01.005] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2016] [Revised: 12/13/2016] [Accepted: 01/01/2017] [Indexed: 11/21/2022]
|
18
|
Li YC, Yang SS, Gao WJ. Disruption of Akt signaling decreases dopamine sensitivity in modulation of inhibitory synaptic transmission in rat prefrontal cortex. Neuropharmacology 2016; 108:403-14. [PMID: 27163190 DOI: 10.1016/j.neuropharm.2016.05.002] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2015] [Revised: 04/28/2016] [Accepted: 05/05/2016] [Indexed: 11/18/2022]
Abstract
Akt is a serine/threonine kinase, which is dramatically reduced in the prefrontal cortex (PFC) of patients with schizophrenia, and a deficiency in Akt1 results in PFC function abnormalities. Although the importance of Akt in dopamine (DA) transmission is well established, how impaired Akt signaling affects the DA modulation of synaptic transmission in the PFC has not been characterized. Here we show that Akt inhibitors significantly decreased receptor sensitivity to DA by shifting DA modulation of GABAA receptor-mediated inhibitory postsynaptic currents (IPSCs) in prefrontal cortical neurons. Akt inhibition caused a significant decrease in synaptic dopamine D2 receptor (D2R) levels with high-dose DA exposure. In addition, Akt inhibition failed to affect DA modulation of IPSCs after blockade of β-arrestin 2. β-arrestin 2-mediated interaction of clathrin with D2R was enhanced by co-application of a Akt inhibitor and DA. Taken together, the reduced response in DA modulation of inhibitory transmission mainly involved β-arrestin 2-dependent D2R desensitization.
Collapse
Affiliation(s)
- Yan-Chun Li
- Department of Neurobiology & Anatomy, Drexel University College of Medicine, Philadelphia, PA 19129, USA
| | - Sha-Sha Yang
- Department of Neurobiology & Anatomy, Drexel University College of Medicine, Philadelphia, PA 19129, USA
| | - Wen-Jun Gao
- Department of Neurobiology & Anatomy, Drexel University College of Medicine, Philadelphia, PA 19129, USA.
| |
Collapse
|
19
|
Duan X, Zhang X, Xu B, Wang F, Lei M. Computational Study and Modified Design of Selective Dopamine D3 Receptor Agonists. Chem Biol Drug Des 2016; 88:142-54. [PMID: 26851125 DOI: 10.1111/cbdd.12743] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2015] [Revised: 11/27/2015] [Accepted: 01/31/2016] [Indexed: 12/15/2022]
Abstract
Dopamine D3 receptor (D3 R) is considered as a potential target for the treatment of nervous system disorders, such as Parkinson's disease. Current research interests primarily focus on the discovery and design of potent D3 agonists. In this work, we selected 40 D3 R agonists as the research system. Comparative molecular field analysis (CoMFA) of three-dimensional quantitative structure-activity relationship (3D-QSAR), structure-selectivity relationship (3D-QSSR), and molecular docking was performed on D3 receptor agonists to obtain the details at atomic level. The results indicated that both the CoMFA model (r(2) = 0.982, q(2) = 0.503, rpred2 = 0.893, SEE = 0.057, F = 166.308) for structure-activity and (r(2) = 0.876, q(2) = 0.436, rpred2 = 0.828, F = 52.645) for structure-selectivity have good predictive capabilities. Furthermore, docking studies on three compounds binding to D3 receptor were performed to analyze the binding modes and interactions. The results elucidate that agonists formed hydrogen bond and hydrophobic interactions with key residues. Finally, we designed six molecules under the guidance of 3D-QSAR/QSSR models. The activity and selectivity of designed molecules have been improved, and ADMET properties demonstrate they have low probability of hepatotoxicity (<0.5). These results from 3D-QSAR/QSSR and docking studies have great significance for designing novel dopamine D3 selective agonists in the future.
Collapse
Affiliation(s)
- Xinli Duan
- State Key Laboratory of Chemical Resource Engineering, Institute of Materia Medica, College of Science, Beijing University of Chemical Technology, Beijing, 100029, China
| | - Xin Zhang
- State Key Laboratory of Chemical Resource Engineering, Institute of Materia Medica, College of Science, Beijing University of Chemical Technology, Beijing, 100029, China
| | - Binglin Xu
- State Key Laboratory of Chemical Resource Engineering, Institute of Materia Medica, College of Science, Beijing University of Chemical Technology, Beijing, 100029, China
| | - Fang Wang
- College of Life Science and Technology, Beijing University of Chemical Technology, Beijing, 100029, China
| | - Ming Lei
- State Key Laboratory of Chemical Resource Engineering, Institute of Materia Medica, College of Science, Beijing University of Chemical Technology, Beijing, 100029, China
| |
Collapse
|
20
|
Trofimova I, Robbins TW. Temperament and arousal systems: A new synthesis of differential psychology and functional neurochemistry. Neurosci Biobehav Rev 2016; 64:382-402. [PMID: 26969100 DOI: 10.1016/j.neubiorev.2016.03.008] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2015] [Revised: 11/15/2015] [Accepted: 03/05/2016] [Indexed: 10/22/2022]
Abstract
This paper critically reviews the unidimensional construct of General Arousal as utilised by models of temperament in differential psychology for example, to underlie 'Extraversion'. Evidence suggests that specialization within monoamine neurotransmitter systems contrasts with the attribution of a "general arousal" of the Ascending Reticular Activating System. Experimental findings show specialized roles of noradrenaline, dopamine, and serotonin systems in hypothetically mediating three complementary forms of arousal that are similar to three functional blocks described in classical models of behaviour within kinesiology, clinical neuropsychology, psychophysiology and temperament research. In spite of functional diversity of monoamine receptors, we suggest that their functionality can be classified using three universal aspects of actions related to expansion, to selection-integration and to maintenance of chosen behavioural alternatives. Monoamine systems also differentially regulate analytic vs. routine aspects of activities at cortical and striatal neural levels. A convergence between main temperament models in terms of traits related to described functional aspects of behavioural arousal also supports the idea of differentiation between these aspects analysed here in a functional perspective.
Collapse
Affiliation(s)
- Irina Trofimova
- CILab, Department of Psychiatry and Behavioral Neurosciences, McMaster University, 92 Bowman St., Hamilton L8S2T6, Canada.
| | - Trevor W Robbins
- Department of Psychology and the Behavioural and Clinical Neuroscience Institute, Downing St., Cambridge CB23EB, UK.
| |
Collapse
|
21
|
Arnsten AFT, Wang M, Paspalas CD. Dopamine's Actions in Primate Prefrontal Cortex: Challenges for Treating Cognitive Disorders. Pharmacol Rev 2016; 67:681-96. [PMID: 26106146 DOI: 10.1124/pr.115.010512] [Citation(s) in RCA: 114] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
The prefrontal cortex (PFC) elaborates and differentiates in primates, and there is a corresponding elaboration in cortical dopamine (DA). DA cells that fire to both aversive and rewarding stimuli likely project to the dorsolateral PFC (dlPFC), signaling a salient event. Since 1979, we have known that DA has an essential influence on dlPFC working memory functions. DA has differing effects via D1 (D1R) versus D2 receptor (D2R) families. D1R are concentrated on dendritic spines, and D1/5R stimulation produces an inverted U-shaped dose response on visuospatial working memory performance and Delay cell firing, the neurons that generate representations of visual space. Optimal levels of D1R stimulation gate out "noise," whereas higher levels, e.g., during stress, suppress Delay cell firing. These effects likely involve hyperpolarization-activated cyclic nucleotide-gated channel opening, activation of GABA interneurons, and reduced glutamate release. Dysregulation of D1R has been related to cognitive deficits in schizophrenia, and there is a need for new, lower-affinity D1R agonists that may better mimic endogenous DA to enhance mental representations and improve cognition. In contrast to D1R, D2R are primarily localized on layer V pyramidal cell dendrites, and D2/3R stimulation speeds and magnifies the firing of Response cells, including Response Feedback cells. Altered firing of Feedback neurons may relate to positive symptoms in schizophrenia. Emerging research suggests that DA may have similar effects in the ventrolateral PFC and frontal eye fields. Research on the orbital PFC in monkeys is just beginning and could be a key area for future discoveries.
Collapse
Affiliation(s)
- Amy F T Arnsten
- Department of Neurobiology, Yale University School of Medicine, New Haven, Connecticut
| | - Min Wang
- Department of Neurobiology, Yale University School of Medicine, New Haven, Connecticut
| | | |
Collapse
|
22
|
Barth C, Villringer A, Sacher J. Sex hormones affect neurotransmitters and shape the adult female brain during hormonal transition periods. Front Neurosci 2015; 9:37. [PMID: 25750611 PMCID: PMC4335177 DOI: 10.3389/fnins.2015.00037] [Citation(s) in RCA: 379] [Impact Index Per Article: 42.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2014] [Accepted: 01/26/2015] [Indexed: 12/21/2022] Open
Abstract
Sex hormones have been implicated in neurite outgrowth, synaptogenesis, dendritic branching, myelination and other important mechanisms of neural plasticity. Here we review the evidence from animal experiments and human studies reporting interactions between sex hormones and the dominant neurotransmitters, such as serotonin, dopamine, GABA and glutamate. We provide an overview of accumulating data during physiological and pathological conditions and discuss currently conceptualized theories on how sex hormones potentially trigger neuroplasticity changes through these four neurochemical systems. Many brain regions have been demonstrated to express high densities for estrogen- and progesterone receptors, such as the amygdala, the hypothalamus, and the hippocampus. As the hippocampus is of particular relevance in the context of mediating structural plasticity in the adult brain, we put particular emphasis on what evidence could be gathered thus far that links differences in behavior, neurochemical patterns and hippocampal structure to a changing hormonal environment. Finally, we discuss how physiologically occurring hormonal transition periods in humans can be used to model how changes in sex hormones influence functional connectivity, neurotransmission and brain structure in vivo.
Collapse
Affiliation(s)
- Claudia Barth
- Department of Neurology, Max Planck Institute for Human Cognitive and Brain Sciences Leipzig, Germany
| | - Arno Villringer
- Department of Neurology, Max Planck Institute for Human Cognitive and Brain Sciences Leipzig, Germany ; Clinic of Cognitive Neurology, University of Leipzig Leipzig, Germany ; Leipzig Research Center for Civilization Diseases, University of Leipzig Leipzig, Germany ; Integrated Research and Treatment Center Adiposity Diseases, University of Leipzig Leipzig, Germany ; Berlin School of Mind and Brain, Mind and Brain Institute Berlin, Germany
| | - Julia Sacher
- Department of Neurology, Max Planck Institute for Human Cognitive and Brain Sciences Leipzig, Germany ; Clinic of Cognitive Neurology, University of Leipzig Leipzig, Germany
| |
Collapse
|
23
|
Lebel M, Robinson P, Cyr M. Canadian Association of Neurosciences Review: The Role of Dopamine Receptor Function in Neurodegenerative Diseases. Can J Neurol Sci 2014; 34:18-29. [PMID: 17352343 DOI: 10.1017/s0317167100005746] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
Dopamine (DA) receptors, which are heavily expressed in the caudate/putamen of the brain, represent the molecular target of several drugs used in the treatment of various neurological disorders, such as Parkinson's disease. Although most of the drugs are very effective in alleviating the symptoms associated with these conditions, their long-term utilization could lead to the development of severe side-effects. In addition to uncovering novel mediators of physiological DA receptor functions, recent research advances are suggesting a role of these receptors in toxic effects on neurons. For instance, accumulating evidence indicates that DA receptors, particularly D1 receptors, are central in the neuronal toxicity induced by elevated synaptic levels of DA. In this review, we will discuss recent findings on DA receptors as regulators of long term neuronal dysfunction and neurodegenerative processes.
Collapse
Affiliation(s)
- Manon Lebel
- Neuroscience Research Group, Université du Québec à Trois-Rivières, Canada
| | | | | |
Collapse
|
24
|
Péczely L, Ollmann T, László K, Kovács A, Gálosi R, Szabó Á, Karádi Z, Lénárd L. Role of D1 dopamine receptors of the ventral pallidum in inhibitory avoidance learning. Behav Brain Res 2014; 270:131-6. [DOI: 10.1016/j.bbr.2014.04.054] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2014] [Revised: 04/28/2014] [Accepted: 04/30/2014] [Indexed: 10/25/2022]
|
25
|
Blanco L, Ros CM, Tarragón E, Fernández-Villalba E, Herrero MT. Functional role of Barrington's nucleus in the micturition reflex: relevance in the surgical treatment of Parkinson's disease. Neuroscience 2014; 266:150-61. [PMID: 24568730 DOI: 10.1016/j.neuroscience.2014.02.002] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2013] [Revised: 01/31/2014] [Accepted: 02/01/2014] [Indexed: 01/23/2023]
Abstract
The pontine micturition center or Barrington's nucleus (BN) - besides regulating micturition - co-regulates the activity of other pelvic viscera such as the colon and genitals. At present, this issue is gaining particular importance due to: (i) recent findings of α-synuclein in BN, (ii) known urinary dysfunction in parkinsonian patients (part of the so-called non-motor symptoms), other patients with dementia and as in very old individuals; and (iii) its proximity to the pedunculopontine nucleus, a surgical target in deep brain stimulation for Parkinson's disease (PD). The structural and functional organization of the micturition reflex comprises a coordinating action of somatic motor activity with both divisions of the autonomic nervous system, modulated by trunk encephalic and cortical centers that involve the BN as locus coeruleus and periaqueductal gray matter, among other trunk encephalic structures. The involvement of dopaminergic activity (physiologic inhibition of the micturition reflex mediated by dopaminergic D1 activity) that diminishes in Parkinsonism and leads to overactivity of the micturition reflex is also well known. In this review, the integrating role of the BN in the context of vesical and gastrointestinal behavior is revisited, and the principal morpho-functional findings that associate dysfunction with the urinary disorders that appear during the pre-motor stages of PD are summarized.
Collapse
Affiliation(s)
- L Blanco
- Clinical and Experimental Neuroscience, Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED), School of Medicine, University of Murcia, Campus de Espinardo, 30071 Murcia, Spain; International Center of Neurological Restoration, Department of Experimental Neurophysiology, Avenue 25 #15805, 11300 Havana, Cuba
| | - C M Ros
- Clinical and Experimental Neuroscience, Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED), School of Medicine, University of Murcia, Campus de Espinardo, 30071 Murcia, Spain; Department of Medicine, School of Health Sciences, University Jaime I, Campus del Riu Sec, 12071 Castellón de la Plana, Spain
| | - E Tarragón
- Department of Medicine, School of Health Sciences, University Jaime I, Campus del Riu Sec, 12071 Castellón de la Plana, Spain
| | - E Fernández-Villalba
- Clinical and Experimental Neuroscience, Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED), School of Medicine, University of Murcia, Campus de Espinardo, 30071 Murcia, Spain
| | - M T Herrero
- Clinical and Experimental Neuroscience, Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED), School of Medicine, University of Murcia, Campus de Espinardo, 30071 Murcia, Spain; Department of Medicine, School of Health Sciences, University Jaime I, Campus del Riu Sec, 12071 Castellón de la Plana, Spain.
| |
Collapse
|
26
|
Ozdemir E, Bagcivan I, Gursoy S. Role of D₁/D₂ dopamin receptors antagonist perphenazine in morphine analgesia and tolerance in rats. Bosn J Basic Med Sci 2014; 13:119-25. [PMID: 23725509 DOI: 10.17305/bjbms.2013.2394] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
While opioid receptors have been implicated in the development of tolerance, the subsequent mechanisms involved in these phenomena have not been completely understood. The purpose of this study was to investigate effects of D1/D2 dopamine receptors antagonist perphenazine on morphine analgesia and tolerance in rats. Male Wistar albino rats weighing 190-205 g were used in these experiments. To constitute of morphine tolerance, animals received morphine (50 mg/kg) once daily for 3 days. After last dose of morphine was injected on day 4, morphine tolerance was evaluated by the analgesia tests. The analgesic effects of perphenazine (1, 5, and 10 mg/kg ), D1-dopamine receptor antagonist SCH 23390 (1 mg/kg), D2-dopamine receptor antagonist eticlopride (1 mg/kg), and morphine were considered at 30-min intervals (0, 30, 60, 90, and 120 min) by tail-flick and hot-plate analgesia tests. Obtained data suggested that D1/D2 dopamine receptors antagonist perphenazine was capable of suppressing opioid tolerance, possibly by the mechanism of inhibiting D2-dopamine receptor. Because the data indicated that D2-dopamine receptor antagonist eticloride, but not D1-dopamine receptor antagonist SCH 23390, significantly decreased morphine tolerance in analgesia tests. In addition, administration of perphenazine with morphine increased morphine analgesia. Results from the present study suggested that dopamine receptors play a significant role in the morphine analgesic tolerance. In particular, D2-dopamine receptor has an important role rather than D1-dopamine receptor in development tolerance to morphine.
Collapse
Affiliation(s)
- Ercan Ozdemir
- Department of Physiology, School of Medicine, Cumhuriyet University, Yenişehir st, 58140 Sivas, Turkey.
| | | | | |
Collapse
|
27
|
Differential mechanisms of opioidergic and dopaminergic systems of the ventral hippocampus (CA3) in anxiolytic-like behaviors induced by cholestasis in mice. Eur J Pharmacol 2013; 714:352-8. [DOI: 10.1016/j.ejphar.2013.07.025] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2012] [Revised: 07/09/2013] [Accepted: 07/16/2013] [Indexed: 11/20/2022]
|
28
|
Ahmadi H, Nasehi M, Rostami P, Zarrindast MR. Involvement of the nucleus accumbens shell dopaminergic system in prelimbic NMDA-induced anxiolytic-like behaviors. Neuropharmacology 2013; 71:112-23. [DOI: 10.1016/j.neuropharm.2013.03.017] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2012] [Revised: 03/21/2013] [Accepted: 03/23/2013] [Indexed: 01/21/2023]
|
29
|
Chen Y, Wang S, Xu X, Liu X, Yu M, Zhao S, Liu S, Qiu Y, Zhang T, Liu BF, Zhang G. Synthesis and Biological Investigation of Coumarin Piperazine (Piperidine) Derivatives as Potential Multireceptor Atypical Antipsychotics. J Med Chem 2013; 56:4671-90. [DOI: 10.1021/jm400408r] [Citation(s) in RCA: 98] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Yin Chen
- Systems Biology Theme, Department
of Biomedical Engineering, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan
430074, China
- Jiangsu Nhwa Pharmaceutical Co., Ltd., 69 Democratic South Road, Xuzhou, Jiangsu
221116, China
| | - Songlin Wang
- Systems Biology Theme, Department
of Biomedical Engineering, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan
430074, China
| | - Xiangqing Xu
- Jiangsu Nhwa Pharmaceutical Co., Ltd., 69 Democratic South Road, Xuzhou, Jiangsu
221116, China
| | - Xin Liu
- Systems Biology Theme, Department
of Biomedical Engineering, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan
430074, China
| | - Minquan Yu
- Jiangsu Nhwa Pharmaceutical Co., Ltd., 69 Democratic South Road, Xuzhou, Jiangsu
221116, China
| | - Song Zhao
- Jiangsu Nhwa Pharmaceutical Co., Ltd., 69 Democratic South Road, Xuzhou, Jiangsu
221116, China
| | - Shicheng Liu
- Jiangsu Nhwa Pharmaceutical Co., Ltd., 69 Democratic South Road, Xuzhou, Jiangsu
221116, China
| | - Yinli Qiu
- Jiangsu Nhwa Pharmaceutical Co., Ltd., 69 Democratic South Road, Xuzhou, Jiangsu
221116, China
| | - Tan Zhang
- Jiangsu Nhwa Pharmaceutical Co., Ltd., 69 Democratic South Road, Xuzhou, Jiangsu
221116, China
| | - Bi-Feng Liu
- Systems Biology Theme, Department
of Biomedical Engineering, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan
430074, China
| | - Guisen Zhang
- Systems Biology Theme, Department
of Biomedical Engineering, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan
430074, China
- Jiangsu Nhwa Pharmaceutical Co., Ltd., 69 Democratic South Road, Xuzhou, Jiangsu
221116, China
| |
Collapse
|
30
|
Effects of dopamine receptor agonist and antagonists on cholestasis-induced anxiolytic-like behaviors in rats. Eur J Pharmacol 2013; 702:25-31. [DOI: 10.1016/j.ejphar.2013.01.023] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2012] [Revised: 12/20/2012] [Accepted: 01/15/2013] [Indexed: 01/08/2023]
|
31
|
Xu J, Vangveravong S, Li S, Fan J, Jones LA, Cui J, Wang R, Tu Z, Chu W, Perlmutter JS, Mach RH. Positron emission tomography imaging of dopamine D2 receptors using a highly selective radiolabeled D2 receptor partial agonist. Neuroimage 2013; 71:168-74. [PMID: 23333701 DOI: 10.1016/j.neuroimage.2013.01.007] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2012] [Revised: 12/19/2012] [Accepted: 01/08/2013] [Indexed: 11/16/2022] Open
Abstract
A series of microPET imaging studies were conducted in anesthetized rhesus monkeys using the dopamine D2-selective partial agonist, [(11)C]SV-III-130. There was a high uptake in regions of brain known to express a high density of D2 receptors under baseline conditions. Rapid displacement in the caudate and putamen, but not in the cerebellum, was observed after injection of the dopamine D2/3 receptor nonselective ligand S(-)-eticlopride at a low dosage (0.025mg/kg/i.v.); no obvious displacement in the caudate, putamen and cerebellum was observed after the treatment with a dopamine D3 receptor selective ligand WC-34 (0.1mg/kg/i.v.). Pretreatment with lorazepam (1mg/kg, i.v. 30min) to reduce endogenous dopamine prior to tracer injection resulted in unchanged binding potential (BP) values, a measure of D2 receptor binding in vivo, in the caudate and putamen. d-Amphetamine challenge studies indicate that there is a significant displacement of [(11)C]SV-III-130 by d-Amphetamine-induced increases in synaptic dopamine levels.
Collapse
Affiliation(s)
- Jinbin Xu
- Department of Radiology, Washington University School of Medicine, 510 S. Kingshighway Blvd., St. Louis, MO 63110, USA
| | | | | | | | | | | | | | | | | | | | | |
Collapse
|
32
|
Luedtke RR, Mishra Y, Wang Q, Griffin SA, Bell-Horner C, Taylor M, Vangveravong S, Dillon GH, Huang RQ, Reichert DE, Mach RH. Comparison of the binding and functional properties of two structurally different D2 dopamine receptor subtype selective compounds. ACS Chem Neurosci 2012; 3:1050-62. [PMID: 23259040 DOI: 10.1021/cn300142q] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2012] [Accepted: 10/12/2012] [Indexed: 11/28/2022] Open
Abstract
We previously reported on the synthesis of substituted phenyl-4-hydroxy-1-piperidyl indole analogues with nanomolar affinity at D2 dopamine receptors, ranging from 10- to 100-fold selective for D2 compared to the D3 dopamine receptor subtype. More recently, we evaluated a panel of aripiprazole analogues, identifying several analogues that also exhibit D2 vs D3 dopamine receptor binding selectivity. These studies further characterize the intrinsic efficacy of the compound with the greatest binding selectivity from each chemical class, 1-((5-methoxy-1H-indol-3-yl)methyl)-4-(4-(methylthio)phenyl)piperidin-4-ol (SV 293) and 7-(4-(4-(2-methoxyphenyl)piperazin-1-yl)butoxy)-3,4-dihydroquinolin-2(1H)-one (SV-III-130s), using an adenylyl cyclase inhibition assay, a G-protein-coupled inward-rectifying potassium (GIRK) channel activation assay, and a cell based phospho-MAPK (pERK1/2) assay. SV 293 was found to be a neutral antagonist at D2 dopamine receptors using all three assays. SV-III-130s is a partial agonist using an adenylyl cyclase inhibition assay but an antagonist in the GIRK and phospho ERK1/2 assays. To define the molecular basis for the binding selectivity, the affinity of these two compounds was evaluated using (a) wild type human D2 and D3 receptors and (b) a panel of chimeric D2/D3 dopamine receptors. Computer-assisted modeling techniques were used to dock these compounds to the human D2 and D3 dopamine receptor subtypes. It is hoped that these studies on D2 receptor selective ligands will be useful in the future design of (a) receptor selective ligands used to define the function of D2-like receptor subtypes, (b) novel pharmacotherapeutic agents, and/or (c) in vitro and in vivo imaging agents.
Collapse
Affiliation(s)
- Robert R. Luedtke
- The Department of Pharmacology
and Neuroscience, University of North Texas Health Science Center, 3500 Camp Bowie Boulevard, Fort Worth, Texas
76107, United States
| | - Yogesh Mishra
- The Department of Pharmacology
and Neuroscience, University of North Texas Health Science Center, 3500 Camp Bowie Boulevard, Fort Worth, Texas
76107, United States
| | - Qi Wang
- Division
of Radiological Sciences, Washington University School of Medicine, Mallinckrodt
Institute of Radiology, 510 S. Kingshighway, St. Louis, Missouri 63110,
United States
| | - Suzy A. Griffin
- The Department of Pharmacology
and Neuroscience, University of North Texas Health Science Center, 3500 Camp Bowie Boulevard, Fort Worth, Texas
76107, United States
| | - Cathy Bell-Horner
- The Department of Pharmacology
and Neuroscience, University of North Texas Health Science Center, 3500 Camp Bowie Boulevard, Fort Worth, Texas
76107, United States
| | - Michelle Taylor
- The Department of Pharmacology
and Neuroscience, University of North Texas Health Science Center, 3500 Camp Bowie Boulevard, Fort Worth, Texas
76107, United States
| | - Suwanna Vangveravong
- Division
of Radiological Sciences, Washington University School of Medicine, Mallinckrodt
Institute of Radiology, 510 S. Kingshighway, St. Louis, Missouri 63110,
United States
| | - Glenn H. Dillon
- The Department of Pharmacology
and Neuroscience, University of North Texas Health Science Center, 3500 Camp Bowie Boulevard, Fort Worth, Texas
76107, United States
| | - Ren-Qi Huang
- The Department of Pharmacology
and Neuroscience, University of North Texas Health Science Center, 3500 Camp Bowie Boulevard, Fort Worth, Texas
76107, United States
| | - David E. Reichert
- Division
of Radiological Sciences, Washington University School of Medicine, Mallinckrodt
Institute of Radiology, 510 S. Kingshighway, St. Louis, Missouri 63110,
United States
| | - Robert H. Mach
- Division
of Radiological Sciences, Washington University School of Medicine, Mallinckrodt
Institute of Radiology, 510 S. Kingshighway, St. Louis, Missouri 63110,
United States
| |
Collapse
|
33
|
Zarrindast MR, Nasehi M, Pournaghshband M, Ghorbani Yekta B. Dopaminergic system in CA1 modulates MK-801 induced anxiolytic-like responses. Pharmacol Biochem Behav 2012; 103:102-10. [DOI: 10.1016/j.pbb.2012.07.016] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/10/2011] [Revised: 07/20/2012] [Accepted: 07/23/2012] [Indexed: 11/26/2022]
|
34
|
González-Maeso J, Sealfon SC. Functional selectivity in GPCR heterocomplexes. Mini Rev Med Chem 2012; 12:851-5. [PMID: 22681249 DOI: 10.2174/138955712800959152] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2011] [Revised: 09/06/2011] [Accepted: 09/09/2011] [Indexed: 01/15/2023]
Abstract
G protein-coupled receptors (GPCRs) can couple to more than one signaling pathway. Biophysical studies and pharmacological theory indicate that they exist in different active conformations that differ in their capacity to activate specific signaling pathways. Individual agonists stabilize particular active conformations and thereby can differ in their relative activation of different signaling pathways coupled to the same receptor, a phenomenon referred to as functional selectivity. Many pairs of GPCRs have been shown to interact and form heterocomplexes in vitro and in vivo. Recent studies implicate these complexes in the responses to some therapeutic drugs and drugs of abuse, and raise the possibility that they may be involved in mediating functional selectivity.
Collapse
Affiliation(s)
- J González-Maeso
- Department Psychiatry, Mount Sinai School of Medicine, New York, New York, USA
| | | |
Collapse
|
35
|
Moreno C, Sivam SP. The Time Course of D1 Agonist Induced Striatonigral ERK1/2 Signaling in a Rat Model of Parkinson’s Disease. ACTA ACUST UNITED AC 2012. [DOI: 10.4236/jbbs.2012.21001] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
|
36
|
Mach RH, Tu Z, Xu J, Li S, Jones LA, Taylor M, Luedtke RR, Derdeyn CP, Perlmutter JS, Mintun MA. Endogenous dopamine (DA) competes with the binding of a radiolabeled D₃ receptor partial agonist in vivo: a positron emission tomography study. Synapse 2011; 65:724-32. [PMID: 21132811 DOI: 10.1002/syn.20891] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2010] [Accepted: 11/04/2010] [Indexed: 11/08/2022]
Abstract
A series of microPET imaging studies were conducted in anesthetized rhesus monkeys using the dopamine D₃-selective partial agonist, [¹⁸F]5. There was variable uptake in regions of brain known to express a high density of D₃ receptors under baseline conditions. Pretreatment with lorazepam (1 mg/kg, i.v. 30 min) to reduce endogenous dopamine activity before tracer injection resulted in a dramatic increase in uptake in the caudate, putamen, and thalamus, and an increase in the binding potential (BP) values, a measure of D₃ receptor binding in vivo. These data indicate that there is a high level of competition between [¹⁸F]5 and endogenous dopamine for D₃ receptors in vivo.
Collapse
Affiliation(s)
- Robert H Mach
- Division of Radiological Sciences, Washington University School of Medicine, Mallinckrodt Institute of Radiology, Missouri 63110, USA.
| | | | | | | | | | | | | | | | | | | |
Collapse
|
37
|
Nasehi M, Mafi F, Oryan S, Nasri S, Zarrindast MR. The effects of dopaminergic drugs in the dorsal hippocampus of mice in the nicotine-induced anxiogenic-like response. Pharmacol Biochem Behav 2011; 98:468-73. [PMID: 21354200 DOI: 10.1016/j.pbb.2011.02.011] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/08/2010] [Revised: 01/31/2011] [Accepted: 02/07/2011] [Indexed: 11/28/2022]
Abstract
RATIONALE Nicotine, an active alkaloid of tobacco has an acetylcholine property that alters anxiety-like behaviors in rodents. Moreover, several investigations suggest that the mesolimbic/cortical dopamine systems to be involved in the drugs affecting anxiety. The dopaminergic modulation of acetylcholine synaptic transmission has also been also suggested by different studies. Furthermore, modulation of such behaviors in rodents may be mediated through the dorsal hippocampus. OBJECTIVES In the present study, a possible role of the dorsal hippocampal acetylcholine receptor mechanism in nicotine's influence on anxiogenic-like responses has been investigated. METHODS During test sessions, the hole-board was used to investigate the effects of SCH23390, sulpiride, SKF38393 and quipirole on nicotine response in mice. RESULTS Intraperitoneal (i.p.) administration of nicotine (0.5 mg/kg) decreased the number of head dips but had no effect on other behaviors. Intra-dorsal hippocampal injections of ineffective doses of SCH23390 (SCH; 0.125 and 0.25 μg/mouse) or sulpiride (SUL; 0.5 and 0.75 μg/mouse) reversed head dips induced by nicotine but did not impact other exploratory behaviors. Furthermore, co-administration of ineffective doses of SKF38393 (SKF; 4 μg/mouse, dorsal hippocampus) or quipirole (QUI; 0.5 μg/mouse) in conjunction with an ineffective dose of nicotine (0.25 mg/kg, i.p.) decreased head dips induced by nicotine, but were otherwise ineffective. CONCLUSION These results may indicate a modulatory effect for the dorsal hippocampus dopamine receptors (D₁ and D₂) on an anxiogenic-like response induced by nicotine.
Collapse
Affiliation(s)
- Mohammad Nasehi
- Department of Biology, Faculty of Basic Sciences, Islamic Azad University, Garmsar Branch, Semnan, Iran
| | | | | | | | | |
Collapse
|
38
|
Riddle LR, Kumar R, Griffin SA, Grundt P, Newman AH, Luedtke RR. Evaluation of the D3 dopamine receptor selective agonist/partial agonist PG01042 on L-dopa dependent animal involuntary movements in rats. Neuropharmacology 2011; 60:284-94. [PMID: 20850462 PMCID: PMC3820002 DOI: 10.1016/j.neuropharm.2010.09.011] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2009] [Revised: 09/07/2010] [Accepted: 09/08/2010] [Indexed: 10/19/2022]
Abstract
The substituted 4-phenylpiperazine D3 dopamine receptor selective antagonist PG01037 ((E)-N-(4-(4-(2,3-dichlorophenyl)piperazin-1-yl)but-2-enyl)-4-(pyridin-2-yl)benzamide) was reported to attenuate L-dopa-associated abnormal involuntary movements (AIMs) in unilaterally lesioned rats, a model of L-dopa-dependent dyskinesia in patients with Parkinson's Disease (Kumar et al., 2009a). We now report that PG01042 (N-(4-(4-(2,3-dichlorophenyl)piperazin-1-yl)butyl)-4-(pyridin-3-yl)benzamide), which is a D3 dopamine receptor selective agonist for adenylyl cyclase inhibition and a partial agonist for mitogenesis, is also capable of attenuating AIMs scores. The intrinsic activity of PG01037 and PG01042 were determined using a) a forskolin-dependent adenylyl cyclase inhibition assay and b) an assay for agonist-associated mitogenesis. It was observed that the in vivo efficacy of PG01042 increased when administered by intraperitoneal (i.p.) injection simultaneously with L-dopa/benserazide (8 mg/kg each), as compared to a 60 min or 30 min pretreatment. PG01042 was found to attenuate AIM scores in these animals in a dose dependent manner. While PG01042 did not effectively inhibit SKF 81297-dependent AIMs, it inhibited apomorphine-dependent AIM scores. Rotarod studies indicate that PG01042 at a dose of 10 mg/kg did not adversely affect motor coordination of the unilaterally lesioned rats. Evaluation of lesioned rats using a cylinder test behavioral paradigm indicated that PG01042 did not dramatically attenuate the beneficial effects of L-dopa. These studies and previously published studies suggest that both D3 dopamine receptor selective antagonists, partial agonists and agonists, as defined by an adenylyl cyclase inhibition assay and a mitogenic assay, are pharmacotherapeutic candidates for the treatment of L-dopa-associated dyskinesia in patients with Parkinson's Disease.
Collapse
Affiliation(s)
- Lindsay R. Riddle
- Department of Pharmacology and Neuroscience, University of North Texas Health Science Center, 3500 Camp Bowie, Fort Worth, TX 76107
| | - Rakesh Kumar
- Department of Pharmacology and Neuroscience, University of North Texas Health Science Center, 3500 Camp Bowie, Fort Worth, TX 76107
| | - Suzy A. Griffin
- Department of Pharmacology and Neuroscience, University of North Texas Health Science Center, 3500 Camp Bowie, Fort Worth, TX 76107
| | - Peter Grundt
- Medicinal Chemistry Section, National Institute on Drug Abuse-Intramural Research Program, NIH, 333 Cassell Drive, Baltimore, MD 21224
| | - Amy Hauck Newman
- Medicinal Chemistry Section, National Institute on Drug Abuse-Intramural Research Program, NIH, 333 Cassell Drive, Baltimore, MD 21224
| | - Robert R. Luedtke
- Department of Pharmacology and Neuroscience, University of North Texas Health Science Center, 3500 Camp Bowie, Fort Worth, TX 76107
| |
Collapse
|
39
|
Korchounov A, Meyer MF, Krasnianski M. Postsynaptic nigrostriatal dopamine receptors and their role in movement regulation. J Neural Transm (Vienna) 2010; 117:1359-69. [PMID: 21076988 PMCID: PMC3000910 DOI: 10.1007/s00702-010-0454-z] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2010] [Accepted: 07/22/2010] [Indexed: 12/30/2022]
Abstract
The article presents the hypothesis that nigrostriatal dopamine may regulate movement by modulation of tone and contraction in skeletal muscles through a concentration-dependent influence on the postsynaptic D1 and D2 receptors on the follow manner: nigrostriatal axons innervate both receptor types within the striatal locus somatotopically responsible for motor control in agonist/antagonist muscle pair around a given joint. D1 receptors interact with lower and D2 receptors with higher dopamine concentrations. Synaptic dopamine concentration increases immediately before movement starts. We hypothesize that increasing dopamine concentrations stimulate first the D1 receptors and reduce muscle tone in the antagonist muscle and than stimulate D2 receptors and induce contraction in the agonist muscle. The preceded muscle tone reduction in the antagonist muscle eases the efficient contraction of the agonist. Our hypothesis is applicable for an explanation of physiological movement regulation, different forms of movement pathology and therapeutic drug effects. Further, this hypothesis provides a theoretical basis for experimental investigation of dopaminergic motor control and development of new strategies for treatment of movement disorders.
Collapse
Affiliation(s)
- Alexei Korchounov
- Parkinson Department, Marienhospital Kevelaer, Basilikastr. 55, 47612 Kevelaer, Germany.
| | | | | |
Collapse
|
40
|
Dowie MJ, Scotter EL, Molinari E, Glass M. The therapeutic potential of G-protein coupled receptors in Huntington's disease. Pharmacol Ther 2010; 128:305-23. [PMID: 20708032 DOI: 10.1016/j.pharmthera.2010.07.008] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2010] [Accepted: 07/14/2010] [Indexed: 01/29/2023]
Abstract
Huntington's disease is a late-onset autosomal dominant inherited neurodegenerative disease characterised by increased symptom severity over time and ultimately premature death. An expanded CAG repeat sequence in the huntingtin gene leads to a polyglutamine expansion in the expressed protein, resulting in complex dysfunctions including cellular excitotoxicity and transcriptional dysregulation. Symptoms include cognitive deficits, psychiatric changes and a movement disorder often referred to as Huntington's chorea, which involves characteristic involuntary dance-like writhing movements. Neuropathologically Huntington's disease is characterised by neuronal dysfunction and death in the striatum and cortex with an overall decrease in cerebral volume (Ho et al., 2001). Neuronal dysfunction begins prior to symptom presentation, and cells of particular vulnerability include the striatal medium spiny neurons. Huntington's is a devastating disease for patients and their families and there is currently no cure, or even an effective therapy for disease symptoms. G-protein coupled receptors are the most abundant receptor type in the central nervous system and are linked to complex downstream pathways, manipulation of which may have therapeutic application in many neurological diseases. This review will highlight the potential of G-protein coupled receptor drug targets as emerging therapies for Huntington's disease.
Collapse
Affiliation(s)
- Megan J Dowie
- Centre for Brain Research, University of Auckland, Private Bag 92019 Auckland, New Zealand
| | | | | | | |
Collapse
|
41
|
Abstract
Cigarette smoking is the main preventable cause of death in developed countries, and the development of more effective treatments is necessary. Cumulating evidence suggests that cognitive enhancement may contribute to the addictive actions of nicotine. Several studies have demonstrated that nicotine enhances cognitive performance in both smokers and non-smokers. Genetic studies support the role of both dopamine (DA) and nicotinic acetylcholine receptors (nAChRs) associated with nicotine-induced cognitive enhancement. Based on knockout mice studies, beta2 nAChRs are thought to be essential in mediating the cognitive effects of nicotine. alpha7nAChRs are associated with attentional and sensory filtering response, especially in schizophrenic individuals. Genetic variation in D2 type DA receptors and the catechol-O-methyltransferase enzyme appears to moderate cognitive deficits induced by smoking abstinence. Serotonin transporter (5-HTT) gene variation also moderates nicotine-induced improvement in spatial working memory. Less is known about the contribution of genetic variation in DA transporter and D4 type DA receptor genetic variation on the cognitive effects of nicotine. Future research will provide a clearer understanding of the mechanism underlying the cognitive-enhancing actions of nicotine.
Collapse
Affiliation(s)
- Aryeh I Herman
- Department of Psychiatry and VA Connecticut Healthcare System, School of Medicine, Yale University, West Haven, CT 06516, USA
| | | |
Collapse
|
42
|
Zarrindast MR, Naghdi-Sedeh N, Nasehi M, Sahraei H, Bahrami F, Asadi F. The effects of dopaminergic drugs in the ventral hippocampus of rats in the nicotine-induced anxiogenic-like response. Neurosci Lett 2010; 475:156-60. [PMID: 20363294 DOI: 10.1016/j.neulet.2010.03.069] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2010] [Revised: 02/22/2010] [Accepted: 03/27/2010] [Indexed: 11/18/2022]
Abstract
Nicotine an active alkaloid of tobacco has dopaminergic properties. The drug alters anxiety-like behavior in rodents. Ventral hippocampus (VHC) may be a site for modulation of anxiety-like behaviors. The possible involvement of ventral hippocampal dopaminergic receptor mechanism in the nicotine influence on anxiogenic-like response has been investigated in the present study. The effects of apomorphine, sulpiride and SCH23390 on nicotine response in elevated plus maze in rats have been investigated. Intraperitoneal administration of nicotine (0.6mg/kg) decreased percentage of open arm time (%OAT) but not percentage of open arm entries (%OAE) and locomotor activity, indicating an anxiogenic-like response. Intra-hippocampal injection (intra-VHC) of apomorphine, a D(1)/D(2) dopamine receptor agonist (0.1 and 0.2microg/rat) also caused anxiogenic-like effects, but the drug blocked that of nicotine. Intra-VHC administration of the D(2) receptor antagonist, sulpiride (1, 2.5 and 5microg/rat) or the D(1) receptor antagonist, SCH23390 (0.01, 0.1 and 1microg/rat) did not elicit any response. However, pretreatment with sulpiride (1microg/rat) or SCH23390 (0.1microg/rat) decreased nicotine's effect. The results may indicate a modulatory effect for the D(1) and D(2) dopamine receptors of VHC in the anxiogenic-like response induced by nicotine.
Collapse
Affiliation(s)
- Mohammad-Reza Zarrindast
- Department of Pharmacology, School of Advanced Medical Technologies and Iranian National Center for Addiction Studies, Tehran University of Medical Sciences, Tehran, Iran.
| | | | | | | | | | | |
Collapse
|
43
|
Solinas M, Tanda G, Wertheim CE, Goldberg SR. Dopaminergic augmentation of delta-9-tetrahydrocannabinol (THC) discrimination: possible involvement of D(2)-induced formation of anandamide. Psychopharmacology (Berl) 2010; 209:191-202. [PMID: 20179908 PMCID: PMC2834964 DOI: 10.1007/s00213-010-1789-8] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/15/2009] [Accepted: 01/31/2010] [Indexed: 11/26/2022]
Abstract
RATIONAL Although delta-9-tetreahydrocannabinol (THC)-induced elevations in accumbal dopamine levels are believed to play an important role in the abuse-related effects of cannabis, little direct evidence has been provided that the dopaminergic system is involved in the psychotropic effects of THC. OBJECTIVE The objective of this study is to investigate whether drugs activating or blocking the dopaminergic system modulate the discriminative effects of THC. METHODS AND RESULTS In rats that had learned to discriminate 3 mg/kg of THC from vehicle injections, the indirect dopaminergic agonists cocaine and amphetamine, the D(1)-receptor agonist SKF-38393, and the D(2)-receptor agonists quinpirole and apomorphine did not produce significant THC-like discriminative effects. However, both cocaine and amphetamine and D(2)-, but not the D(1)-, receptor agonists, augmented THC discrimination. Neither the D(1)-receptor antagonist SCH-23390 nor the D(2)-receptor antagonist raclopride reduced the discriminative effects of THC, even at doses that significantly depressed baseline operant responding. However, the D(2)-, but not the D(1)-, antagonist counteracted the augmentation of THC's discriminative effects produced by cocaine and amphetamine. We hypothesized that release of anandamide by activation of D(2) receptors was responsible for the observed augmentation of THC discrimination. This hypothesis was supported by two findings. First, the cannabinoid CB(1)-receptor antagonist rimonabant blocked quinpirole-induced augmentation of THC discrimination. Second, inhibition of anandamide degradation by blockade of fatty acid amide hydrolase augmented the THC-like effects of quinpirole. CONCLUSIONS Dopamine does not play a major role in THC discrimination. However, activation of the dopaminergic system positively modulates the discriminative effects of THC, possibly through D(2)-induced elevations in brain levels of anandamide.
Collapse
MESH Headings
- Amidohydrolases/antagonists & inhibitors
- Amidohydrolases/metabolism
- Animals
- Arachidonic Acids/metabolism
- Behavior, Animal/drug effects
- Brain/drug effects
- Brain/metabolism
- Conditioning, Operant/drug effects
- Discrimination, Psychological/drug effects
- Dopamine/metabolism
- Dopamine Agonists/pharmacology
- Dopamine Antagonists/pharmacology
- Dose-Response Relationship, Drug
- Dronabinol/pharmacology
- Endocannabinoids
- Enzyme Inhibitors/pharmacology
- Male
- Polyunsaturated Alkamides/metabolism
- Psychotropic Drugs/pharmacology
- Rats
- Rats, Sprague-Dawley
- Receptor, Cannabinoid, CB1/drug effects
- Receptor, Cannabinoid, CB1/metabolism
- Receptors, Dopamine D1/drug effects
- Receptors, Dopamine D1/metabolism
- Receptors, Dopamine D2/drug effects
- Receptors, Dopamine D2/metabolism
- Up-Regulation
Collapse
Affiliation(s)
- Marcello Solinas
- Laboratoire de Biologie et Physiologie Cellulaires, CNRS-6187, University of Poitiers, 40 Avenue du Recteur Pineau, 86022, Poitiers, France.
| | | | | | | |
Collapse
|
44
|
Taylor M, Grundt P, Griffin SA, Newman AH, Luedtke RR. Dopamine D3 receptor selective ligands with varying intrinsic efficacies at adenylyl cyclase inhibition and mitogenic signaling pathways. Synapse 2010; 64:251-66. [PMID: 19924694 PMCID: PMC3821045 DOI: 10.1002/syn.20725] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
A panel of structurally related substituted 4-phenylpiperazines with nanomolar affinity and selectivity at D3 dopamine receptors has been synthesized. Compounds in which a heterocyclic (2-phenyl pyridyl, 3-phenyl pyridyl, benzothiophene, or benzofuran) moiety is adjacent to the amide was varied and/or a double bond (trans-butenyl) replaced the four-carbon aliphatic chain linking the arylamide with the 4-phenylpiperazine moiety were compared for (a) affinity at human D2 and D3 dopamine receptors, (b) intrinsic efficacy using an adenylyl cyclase inhibition assay, and (c) intrinsic efficacy using a mitogenic assay. All 16 compounds were (a) more efficacious for the D3 receptor cyclase inhibition assay than for the D3 receptor mitogenic assay and (b) exhibited the same or greater efficacy at D3 compared to D2 receptor (with the exception of one compound). Although the heterocyclic amide moiety appears to be the pivotal structural element determining the intrinsic efficacy of our D3 receptor selective compounds, the magnitude of the efficacy is modulated by the (a) substituent(s) on the phenyl piperazine and (b) the saturation of the four-carbon chain that links the arylamide and the phenylpiperazine. In addition, our ligands are functionally selective, because they can have differing intrinsic efficacies for the cyclase inhibition and the mitogenic activation signaling pathways. Compounds that are essentially full agonists at the cyclase assay appear to be only partial agonists in the mitogenic assay and compounds that are partial agonists in our cyclase assay are partial agonists or antagonists in the mitogenic assay.
Collapse
Affiliation(s)
- Michelle Taylor
- Department of Pharmacology and Neuroscience, University of North Texas Health Science Center, Fort Worth, TX,76109 USA
| | - Peter Grundt
- Medicinal Chemistry Section, NIDA-IRP, NIH, Baltimore, MD, USA
| | - Suzy A. Griffin
- Department of Pharmacology and Neuroscience, University of North Texas Health Science Center, Fort Worth, TX,76109 USA
| | | | - Robert R. Luedtke
- Department of Pharmacology and Neuroscience, University of North Texas Health Science Center, Fort Worth, TX,76109 USA
| |
Collapse
|
45
|
Walters JR, Bergstrom DA. Synchronous Activity in Basal Ganglia Circuits. HANDBOOK OF BEHAVIORAL NEUROSCIENCE 2010. [DOI: 10.1016/b978-0-12-374767-9.00025-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
|
46
|
Mailman RB, Murthy V. Third generation antipsychotic drugs: partial agonism or receptor functional selectivity? Curr Pharm Des 2010; 16:488-501. [PMID: 19909227 PMCID: PMC2958217 DOI: 10.2174/138161210790361461] [Citation(s) in RCA: 207] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2009] [Accepted: 11/12/2009] [Indexed: 11/22/2022]
Abstract
Functional selectivity is the term that describes drugs that cause markedly different signaling through a single receptor (e.g., full agonist at one pathway and antagonist at a second). It has been widely recognized recently that this phenomenon impacts the understanding of mechanism of action of some drugs, and has relevance to drug discovery. One of the clinical areas where this mechanism has particular importance is in the treatment of schizophrenia. Antipsychotic drugs have been grouped according to both pattern of clinical action and mechanism of action. The original antipsychotic drugs such as chlorpromazine and haloperidol have been called typical or first generation. They cause both antipsychotic actions and many side effects (extrapyramidal and endocrine) that are ascribed to their high affinity dopamine D(2) receptor antagonism. Drugs such as clozapine, olanzapine, risperidone and others were then developed that avoided the neurological side effects (atypical or second generation antipsychotics). These compounds are divided mechanistically into those that are high affinity D(2) and 5-HT(2A) antagonists, and those that also bind with modest affinity to D(2), 5-HT(2A), and many other neuroreceptors. There is one approved third generation drug, aripiprazole, whose actions have been ascribed alternately to either D(2) partial agonism or D(2) functional selectivity. Although partial agonism has been the more widely accepted mechanism, the available data are inconsistent with this mechanism. Conversely, the D(2) functional selectivity hypothesis can accommodate all current data for aripiprazole, and also impacts on discovery compounds that are not pure D(2) antagonists.
Collapse
Affiliation(s)
- Richard B Mailman
- Penn State University College of Medicine - Milton S. Hershey Medical Center Department of Pharmacology. R130 500 University Dr., PO Box 850, Hershey, PA 17033-0850, USA.
| | | |
Collapse
|
47
|
Anselme P. The uncertainty processing theory of motivation. Behav Brain Res 2009; 208:291-310. [PMID: 20035799 DOI: 10.1016/j.bbr.2009.12.020] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2009] [Revised: 12/13/2009] [Accepted: 12/16/2009] [Indexed: 10/20/2022]
Abstract
Most theories describe motivation using basic terminology (drive, 'wanting', goal, pleasure, etc.) that fails to inform well about the psychological mechanisms controlling its expression. This leads to a conception of motivation as a mere psychological state 'emerging' from neurophysiological substrates. However, the involvement of motivation in a large number of behavioural parameters (triggering, intensity, duration, and directedness) and cognitive abilities (learning, memory, decision, etc.) suggest that it should be viewed as an information processing system. The uncertainty processing theory (UPT) presented here suggests that motivation is the set of cognitive processes allowing organisms to extract information from the environment by reducing uncertainty about the occurrence of psychologically significant events. This processing of information is shown to naturally result in the highlighting of specific stimuli. The UPT attempts to solve three major problems: (i) how motivations can affect behaviour and cognition so widely, (ii) how motivational specificity for objects and events can result from nonspecific neuropharmacological causal factors (such as mesolimbic dopamine), and (iii) how motivational interactions can be conceived in psychological terms, irrespective of their biological correlates. The UPT is in keeping with the conceptual tradition of the incentive salience hypothesis while trying to overcome the shortcomings inherent to this view.
Collapse
Affiliation(s)
- Patrick Anselme
- Centre de Neurosciences Cognitives et Comportementales, Université de Liège, Liège, Belgium.
| |
Collapse
|
48
|
Aoki S, Matsuo N, Hanaya K, Yamada Y, Kageyama Y. Design and synthesis of a photocleavable biotin-linker for the photoisolation of ligand-receptor complexes based on the photolysis of 8-quinolinyl sulfonates in aqueous solution. Bioorg Med Chem 2009; 17:3405-13. [PMID: 19362845 DOI: 10.1016/j.bmc.2009.03.031] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2009] [Revised: 03/17/2009] [Accepted: 03/18/2009] [Indexed: 11/19/2022]
Abstract
The ability of avidin (Avn) to form strong complex with biotin (Btn) is frequently used in the detection and isolation of biomolecules in biochemical, analytical, and medicinal research. The fact that the binding is nealy irreversible, however, constitutes a drawback in term of the isolation and purification of intact biomolecules. We recently found that 8-quinolinyl esters of aromatic or aliphatic sulfonic acids undergo photolysis when irradiated at 300-330 nm in aqueous solution at neutral pH. In this work, a biotin-dopamine (BD) conjugate containing a photocleavable 8-quinolinyl benzenesulfonate (QB) linker, BDQB, was designed and synthesized for use in the efficient recovery of dopamine-protein (e.g., antibody) complexes from an Avn-Btn system. The complexation of BDQB with a primary anti-dopamine antibody (anti-dopamine IgG(1) from mouse) on an Avn-coated plate was confirmed by an enzyme-linked immunosorbent assay (ELISA) utilizing a secondary antibody (anti-IgG(1) antibody) conjugated with horseradish peroxidase (HRP). Upon the photoirradiation (at 313 nm) of the BDQB-IgG(1) complex, the release of dopamine-IgG(1) complex was confirmed by ELISA. Characterization of the resulting photoreleased dopamine-anti-dopamine IgG(1) complex was performed by SDS-PAGE and Western blot.
Collapse
Affiliation(s)
- Shin Aoki
- Faculty of Pharmaceutical Sciences, Tokyo University of Science, Yamazaki, Noda, Japan.
| | | | | | | | | |
Collapse
|
49
|
Abstract
The effect of dopamine receptor agonist cabergoline on muscle tone and contractility was studied in healthy volunteers. Variations in muscle tone were evaluated by means of transcranial magnetic stimulation under resting conditions. Muscle contractility was estimated from kinematic parameters of voluntary movements. Oral administration of cabergoline in a dose of 2 mg was followed by a decrease in muscle tone and increase in muscle contractility. Our findings indicate that the brain dopaminergic system regulates voluntary movements by decreasing the tone and increasing contractility of skeletal muscles. Under resting conditions, prolonged exposure of D1 receptors to dopamine in a low concentration decreases excitability threshold of the motor cortex and reduces muscle tone. During voluntary movements, short-term stimulation of D2 receptors with dopamine in a high concentration increases excitability of the motor cortex and induces muscle contraction. The movement occurs when D2 receptor-mediated excitation of the cortex and induced muscle contraction exceed the decrease in muscle tone and excitability threshold caused by stimulation of D1 receptors.
Collapse
Affiliation(s)
- A M Korchounov
- Center for Locomotor Disorders, Bad Nauheim/Frankfurt am Main, Germany.
| |
Collapse
|
50
|
Leopoldo M, Lacivita E, De Giorgio P, Contino M, Berardi F, Perrone R. Design, synthesis, and binding affinities of potential positron emission tomography (PET) ligands with optimal lipophilicity for brain imaging of the dopamine D3 receptor. Part II. Bioorg Med Chem 2009; 17:758-66. [DOI: 10.1016/j.bmc.2008.11.044] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2008] [Revised: 11/13/2008] [Accepted: 11/15/2008] [Indexed: 12/01/2022]
|