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Zhou X, Zhu F. Development and Validation of a Nomogram Model for Accurately Predicting Depression in Maintenance Hemodialysis Patients: A Multicenter Cross-Sectional Study in China. Risk Manag Healthc Policy 2024; 17:2111-2123. [PMID: 39246589 PMCID: PMC11380485 DOI: 10.2147/rmhp.s456499] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2024] [Accepted: 03/23/2024] [Indexed: 09/10/2024] Open
Abstract
Purpose Depression is a major concern in maintenance hemodialysis. However, given the elusive nature of its risk factors and the redundant nature of existing assessment forms for judging depression, further research is necessary. Therefore, this study was devoted to exploring the risk factors for depression in maintenance hemodialysis patients and to developing and validating a predictive model for assessing depression in maintenance hemodialysis patients. Patients and Methods This cross-sectional study was conducted from May 2022 to December 2022, and we recruited maintenance hemodialysis patients from a multicentre hemodialysis centre. Risk factors were identified by Lasso regression analysis and a Nomogram model was developed to predict depressed patients on maintenance hemodialysis. The predictive accuracy of the model was assessed by ROC curves, area under the ROC (AUC), consistency index (C-index), and calibration curves, and its applicability in clinical practice was evaluated using decision curves (DCA). Results A total of 175 maintenance hemodialysis patients were included in this study, and cases were randomised into a training set of 148 and a validation set of 27 (split ratio 8.5:1.5), with a depression prevalence of 29.1%. Based on age, employment, albumin, and blood uric acid, a predictive map of depression was created, and in the training set, the nomogram had an AUC of 0.7918, a sensitivity of 61.9%, and a specificity of 89.2%. In the validation set, the nomogram had an AUC of 0.810, a sensitivity of 100%, and a specificity of 61.1%. The bootstrap-based internal validation showed a c-index of 0.792, while the calibration curve showed a strong correlation between actual and predicted depression risk. Decision curve analysis (DCA) results indicated that the predictive model was clinically useful. Conclusion The nomogram constructed in this study can be used to identify depression conditions in vulnerable groups quickly, practically and reliably.
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Affiliation(s)
- Xinyuan Zhou
- Department of Nephrology, the First People's Hospital of Pinghu, Jiaxing, Zhejiang, People's Republic of China
- Jiaxing University Master Degree Cultivation Base, Zhejiang Chinese Medical University, Hangzhou, Zhejiang, People's Republic of China
| | - Fuxiang Zhu
- Department of Nephrology, Jiaxing Hospital of Traditional Chinese Medicine, Jiaxing, Zhejiang, People's Republic of China
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Bodur M, Kaya S, Ilhan-Esgin M, Çakiroğlu FP, Özçelik AÖ. The caffeine dilemma: unraveling the intricate relationship between caffeine use disorder, caffeine withdrawal symptoms and mental well-being in adults. Public Health Nutr 2024; 27:e57. [PMID: 38305102 PMCID: PMC10882539 DOI: 10.1017/s1368980024000399] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2024]
Abstract
OBJECTIVE This study aimed to explore the relationship between caffeine use disorder (CUD), caffeine withdrawal symptoms and the prevalence of depression, anxiety and stress (DASS) in adults. DESIGN The study utilised a cross-sectional design to assess the relationships between CUD, caffeine withdrawal symptoms and DASS. SETTING Participants' CUD was evaluated through the Caffeine Use Disorder Questionnaire (CUDQ), while the Depression Anxiety Stress Scale-21 (DASS-21) measured DASS levels. Caffeine withdrawal symptoms and total caffeine intake were calculated based on self-reported consumption of caffeine-rich products. PARTICIPANTS The study involved 618 participants with an average age of 27·8 (sd 7·8) years. RESULTS Participants consumed an average of 461·21 (sd 11·09) mg/d of caffeine, showing a positive correlation between CUD and total caffeine intake. The risk of CUD increased alongside levels of DASS. Individuals with caffeine withdrawal symptoms had higher CUDQ and DASS scores. A multiple linear regression model revealed significant associations between total caffeine intake (P < 0·001) and DASS-21 score (P < 0·001) with CUDQ score. CONCLUSIONS The study concluded that caffeine, while recognised for its potential health benefits, also exhibits properties that may lead to addiction. The development of caffeine use disorder and cessation of caffeine intake can increase DASS levels in adults, indicating the need for awareness and appropriate interventions in public health nutrition.
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Affiliation(s)
- Mahmut Bodur
- Ankara University, Faculty of Health Sciences, Department of Nutrition and Dietetics, Ankara, Turkey
| | - Seda Kaya
- Tokat Gaziosmanpaşa University, Faculty of Health Sciences, Department of Nutrition and Dietetics, Tokat, Turkey
| | - Merve Ilhan-Esgin
- Ankara University, Faculty of Health Sciences, Department of Nutrition and Dietetics, Ankara, Turkey
| | - Funda Pınar Çakiroğlu
- Ankara University, Faculty of Health Sciences, Department of Nutrition and Dietetics, Ankara, Turkey
| | - Ayşe Özfer Özçelik
- Ankara University, Faculty of Health Sciences, Department of Nutrition and Dietetics, Ankara, Turkey
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3
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Wang K, Huang S, Fu D, Yang X, Ma L, Zhang T, Zhao W, Deng D, Ding Y, Zhang Y, Huang L, Chen X. The neurobiological mechanisms and therapeutic prospect of extracellular ATP in depression. CNS Neurosci Ther 2024; 30:e14536. [PMID: 38375982 PMCID: PMC10877668 DOI: 10.1111/cns.14536] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2023] [Revised: 09/21/2023] [Accepted: 11/07/2023] [Indexed: 02/21/2024] Open
Abstract
BACKGROUND Depression is a prevalent psychiatric disorder with high long-term morbidities, recurrences, and mortalities. Despite extensive research efforts spanning decades, the cellular and molecular mechanisms of depression remain largely unknown. What's more, about one third of patients do not have effective anti-depressant therapies, so there is an urgent need to uncover more mechanisms to guide the development of novel therapeutic strategies. Adenosine triphosphate (ATP) plays an important role in maintaining ion gradients essential for neuronal activities, as well as in the transport and release of neurotransmitters. Additionally, ATP could also participate in signaling pathways following the activation of postsynaptic receptors. By searching the website PubMed for articles about "ATP and depression" especially focusing on the role of extracellular ATP (eATP) in depression in the last 5 years, we found that numerous studies have implied that the insufficient ATP release from astrocytes could lead to depression and exogenous supply of eATP or endogenously stimulating the release of ATP from astrocytes could alleviate depression, highlighting the potential therapeutic role of eATP in alleviating depression. AIM Currently, there are few reviews discussing the relationship between eATP and depression. Therefore, the aim of our review is to conclude the role of eATP in depression, especially focusing on the evidence and mechanisms of eATP in alleviating depression. CONCLUSION We will provide insights into the prospects of leveraging eATP as a novel avenue for the treatment of depression.
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Affiliation(s)
- Kaixin Wang
- Department of Anesthesiology, Union Hospital, Tongji Medical CollegeHuazhong University of Science and TechnologyWuhanChina
- Institute of Anesthesia and Critical Care Medicine, Union Hospital, Tongji Medical CollegeHuazhong University of Science and TechnologyWuhanChina
- Key Laboratory of Anesthesiology and Resuscitation (Huazhong University of Science and Technology), Ministry of EducationWuhanChina
| | - Shiqian Huang
- Department of Anesthesiology, Union Hospital, Tongji Medical CollegeHuazhong University of Science and TechnologyWuhanChina
- Institute of Anesthesia and Critical Care Medicine, Union Hospital, Tongji Medical CollegeHuazhong University of Science and TechnologyWuhanChina
- Key Laboratory of Anesthesiology and Resuscitation (Huazhong University of Science and Technology), Ministry of EducationWuhanChina
| | - Daan Fu
- Department of Anesthesiology, Union Hospital, Tongji Medical CollegeHuazhong University of Science and TechnologyWuhanChina
- Institute of Anesthesia and Critical Care Medicine, Union Hospital, Tongji Medical CollegeHuazhong University of Science and TechnologyWuhanChina
- Key Laboratory of Anesthesiology and Resuscitation (Huazhong University of Science and Technology), Ministry of EducationWuhanChina
| | - Xinxin Yang
- Department of Anesthesiology, Union Hospital, Tongji Medical CollegeHuazhong University of Science and TechnologyWuhanChina
- Institute of Anesthesia and Critical Care Medicine, Union Hospital, Tongji Medical CollegeHuazhong University of Science and TechnologyWuhanChina
- Key Laboratory of Anesthesiology and Resuscitation (Huazhong University of Science and Technology), Ministry of EducationWuhanChina
| | - Lulin Ma
- Department of Anesthesiology, Union Hospital, Tongji Medical CollegeHuazhong University of Science and TechnologyWuhanChina
- Institute of Anesthesia and Critical Care Medicine, Union Hospital, Tongji Medical CollegeHuazhong University of Science and TechnologyWuhanChina
- Key Laboratory of Anesthesiology and Resuscitation (Huazhong University of Science and Technology), Ministry of EducationWuhanChina
| | - Tianhao Zhang
- Department of Anesthesiology, Union Hospital, Tongji Medical CollegeHuazhong University of Science and TechnologyWuhanChina
- Institute of Anesthesia and Critical Care Medicine, Union Hospital, Tongji Medical CollegeHuazhong University of Science and TechnologyWuhanChina
- Key Laboratory of Anesthesiology and Resuscitation (Huazhong University of Science and Technology), Ministry of EducationWuhanChina
| | - Wenjing Zhao
- Department of Anesthesiology, Union Hospital, Tongji Medical CollegeHuazhong University of Science and TechnologyWuhanChina
- Institute of Anesthesia and Critical Care Medicine, Union Hospital, Tongji Medical CollegeHuazhong University of Science and TechnologyWuhanChina
- Key Laboratory of Anesthesiology and Resuscitation (Huazhong University of Science and Technology), Ministry of EducationWuhanChina
| | - Daling Deng
- Department of Anesthesiology, Union Hospital, Tongji Medical CollegeHuazhong University of Science and TechnologyWuhanChina
- Institute of Anesthesia and Critical Care Medicine, Union Hospital, Tongji Medical CollegeHuazhong University of Science and TechnologyWuhanChina
- Key Laboratory of Anesthesiology and Resuscitation (Huazhong University of Science and Technology), Ministry of EducationWuhanChina
| | - Yuanyuan Ding
- Department of Anesthesiology, Union Hospital, Tongji Medical CollegeHuazhong University of Science and TechnologyWuhanChina
- Institute of Anesthesia and Critical Care Medicine, Union Hospital, Tongji Medical CollegeHuazhong University of Science and TechnologyWuhanChina
- Key Laboratory of Anesthesiology and Resuscitation (Huazhong University of Science and Technology), Ministry of EducationWuhanChina
| | - Yanyan Zhang
- Department of Anesthesiology, Union Hospital, Tongji Medical CollegeHuazhong University of Science and TechnologyWuhanChina
- Institute of Anesthesia and Critical Care Medicine, Union Hospital, Tongji Medical CollegeHuazhong University of Science and TechnologyWuhanChina
- Key Laboratory of Anesthesiology and Resuscitation (Huazhong University of Science and Technology), Ministry of EducationWuhanChina
| | - Li Huang
- Department of Anesthesiology, Union Hospital, Tongji Medical CollegeHuazhong University of Science and TechnologyWuhanChina
- Institute of Anesthesia and Critical Care Medicine, Union Hospital, Tongji Medical CollegeHuazhong University of Science and TechnologyWuhanChina
- Key Laboratory of Anesthesiology and Resuscitation (Huazhong University of Science and Technology), Ministry of EducationWuhanChina
| | - Xiangdong Chen
- Department of Anesthesiology, Union Hospital, Tongji Medical CollegeHuazhong University of Science and TechnologyWuhanChina
- Institute of Anesthesia and Critical Care Medicine, Union Hospital, Tongji Medical CollegeHuazhong University of Science and TechnologyWuhanChina
- Key Laboratory of Anesthesiology and Resuscitation (Huazhong University of Science and Technology), Ministry of EducationWuhanChina
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Bozorgi H, Rashidy-Pour A, Moradikor N, Zamani M, Motaghi E. Neurobehavioral protective effects of Japanese sake yeast supplement against chronic stress-induced anxiety and depression-like symptoms in mice: Possible role of central adenosine receptors. Psychopharmacology (Berl) 2024; 241:401-416. [PMID: 37996666 DOI: 10.1007/s00213-023-06496-3] [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: 01/26/2023] [Accepted: 11/01/2023] [Indexed: 11/25/2023]
Abstract
RATIONALE Using routine synthetic drugs in the treatment of psychiatric disorders may have some restrictions due to serious side effects and pharmacoresistance. Some natural agents may be promising alternatives in this case. The neuroprotective activity of the neuromodulator adenosine and its receptor, A1 receptor (A1R) in the central nervous system has been mentioned in different studies. OBJECTIVE We aimed to determine the anxiolytic, antidepressant and sedative effects of Japanese sake yeast as the first report. METHOD Mice were subjected to a one-week stress protocol and concomitantly treated orally with sake yeast at the dose levels of 100, 200 and 300 mg kg-1 once daily for a week. The anxiolytic, antidepressant, and sedative actions of sake yeast were evaluated with the related tests. RESULTS In all dose regiments, sake yeast significantly improved functions in the EPM and FST. 200 and 300 mg/kg of sake yeast significantly increased sleep duration and reduced sleep latency. Anxiolytic and antidepressant-like activities of sake yeast were maintained by the injection of ZM241385 (15 mg kg-1), a selective adenosine A2AR antagonist but completely counteracted by the injection of 8-cyclopentyltheophylline (10 mg kg-1), a selective adenosine A1R antagonist. 300 mg/kg of the yeast significantly increased the BDNF levels. Amygdala corticosterone levels did not show any significant changes at any dosage. Amygdala TNF-α, IL-6 and IL-1β levels also decreased significantly with all the sake regiments compared to the control group. CONCLUSIONS We conclude that oral sake yeast supplement exerts a neurobehavioral protective effect predominantly by activating central A1Rs.
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Affiliation(s)
- Hooman Bozorgi
- Research Center of Physiology, Department of Pharmacology, Semnan University of Medical Sciences, Semnan, Iran
| | - Ali Rashidy-Pour
- Research Center of Physiology, Department of Physiology, Semnan University of Medical Sciences, Semnan, Iran
| | - Nasrollah Moradikor
- International Center for Neuroscience Research, Institute for Intelligent Research, Tbilisi, Georgia.
| | | | - Ehsan Motaghi
- Neurosciences Research Center, Research Institute for Health Development, Kurdistan University of Medical Sciences, Sanandaj, Iran.
- Department of Physiology and Pharmacology, Faculty of Medicine, Kurdistan University of Medical Sciences, Sanandaj, Iran.
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Karati D, Mukherjee S, Roy S. Molecular and Structural Insight into Adenosine A 2A Receptor in Neurodegenerative Disorders: A Significant Target for Efficient Treatment Approach. Mol Neurobiol 2023; 60:5987-6000. [PMID: 37391647 DOI: 10.1007/s12035-023-03441-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2022] [Accepted: 06/10/2023] [Indexed: 07/02/2023]
Abstract
All biological tissues and bodily fluids include the autacoid adenosine. The P1 class of purinergic receptors includes adenosine receptors. Four distinct G-protein-coupled receptors on the cellular membrane mediate the effects of adenosine, whose cytoplasmic content is regulated by producing/degrading enzymes and nucleoside transporters. A2A receptor has received a great deal of attention in recent years because it has a wide range of potential therapeutic uses. A2B and, more significantly, A2A receptors regulate numerous physiological mechanisms in the central nervous system (CNS). The inferior targetability of A2B receptors towards adenosine points that they might portray a promising medicinal target since they are triggered only under pharmacological circumstances (when adenosine levels rise up to micromolar concentrations). The accessibility of specific ligands for A2B receptors would permit the exploration of such a theory. A2A receptors mediate both potentially neurotoxic and neuroprotective actions. Hence, it is debatable to what extent they play a role in neurodegenerative illnesses. However, A2A receptor blockers have demonstrated clear antiparkinsonian consequences, and a significant attraction exists in the role of A2A receptors in other neurodegenerative disorders. Amyloid peptide extracellular accumulation and tau hyperphosphorylation are the pathogenic components of AD that lead to neuronal cell death, cognitive impairment, and memory loss. Interestingly, in vitro and in vivo research has shown that A2A adenosine receptor antagonists may block each of these clinical symptoms, offering a crucial new approach to combat a condition for which, regrettably, only symptomatic medications are currently available. At least two requirements must be met to determine whether such receptors are a target for diseases of the CNS: a complete understanding of the mechanisms governing A2A-dependent processes and the availability of ligands that can distinguish between the various receptor populations. This review concisely summarises the biological effects mediated by A2A adenosine receptors in neurodegenerative disorders and discusses the chemical characteristics of A2A adenosine receptor antagonists undergoing clinical trials. Selective A2A receptor blocker against neurodegenerative disorders.
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Affiliation(s)
- Dipanjan Karati
- Department of Pharmaceutical Technology, School of Pharmacy, Techno India University, Kolkata, 700091, India
| | - Swarupananda Mukherjee
- Department of Pharmaceutical Technology, NSHM Knowledge Campus, Kolkata, 124 B.L. Saha Road, Kolkata, West Bengal, 700053, India
| | - Souvik Roy
- Department of Pharmaceutical Technology, NSHM Knowledge Campus, Kolkata, 124 B.L. Saha Road, Kolkata, West Bengal, 700053, India.
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Skopál A, Ujlaki G, Gerencsér AT, Bankó C, Bacsó Z, Ciruela F, Virág L, Haskó G, Kókai E. Adenosine A 2A Receptor Activation Regulates Niemann-Pick C1 Expression and Localization in Macrophages. Curr Issues Mol Biol 2023; 45:4948-4969. [PMID: 37367064 DOI: 10.3390/cimb45060315] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2023] [Revised: 05/24/2023] [Accepted: 05/27/2023] [Indexed: 06/28/2023] Open
Abstract
Adenosine plays an important role in modulating immune cell function, particularly T cells and myeloid cells, such as macrophages and dendritic cells. Cell surface adenosine A2A receptors (A2AR) regulate the production of pro-inflammatory cytokines and chemokines, as well as the proliferation, differentiation, and migration of immune cells. In the present study, we expanded the A2AR interactome and provided evidence for the interaction between the receptor and the Niemann-Pick type C intracellular cholesterol transporter 1 (NPC1) protein. The NPC1 protein was identified to interact with the C-terminal tail of A2AR in RAW 264.7 and IPMФ cells by two independent and parallel proteomic approaches. The interaction between the NPC1 protein and the full-length A2AR was further validated in HEK-293 cells that permanently express the receptor and RAW264.7 cells that endogenously express A2AR. A2AR activation reduces the expression of NPC1 mRNA and protein density in LPS-activated mouse IPMФ cells. Additionally, stimulation of A2AR negatively regulates the cell surface expression of NPC1 in LPS-stimulated macrophages. Furthermore, stimulation of A2AR also altered the density of lysosome-associated membrane protein 2 (LAMP2) and early endosome antigen 1 (EEA1), two endosomal markers associated with the NPC1 protein. Collectively, these results suggested a putative A2AR-mediated regulation of NPC1 protein function in macrophages, potentially relevant for the Niemann-Pick type C disease when mutations in NPC1 protein result in the accumulation of cholesterol and other lipids in lysosomes.
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Affiliation(s)
- Adrienn Skopál
- Department of Medical Chemistry, Faculty of Medicine, University of Debrecen, H-4032 Debrecen, Hungary
- Doctoral School of Molecular Medicine, University of Debrecen, H-4032 Debrecen, Hungary
| | - Gyula Ujlaki
- Department of Medical Chemistry, Faculty of Medicine, University of Debrecen, H-4032 Debrecen, Hungary
- Doctoral School of Molecular Medicine, University of Debrecen, H-4032 Debrecen, Hungary
| | - Attila Tibor Gerencsér
- Department of Medical Chemistry, Faculty of Medicine, University of Debrecen, H-4032 Debrecen, Hungary
| | - Csaba Bankó
- Department of Biophysics and Cell Biology, Faculty of Medicine, University of Debrecen, H-4032 Debrecen, Hungary
- Doctoral School of Molecular Cell and Immune Biology, University of Debrecen, H-4032 Debrecen, Hungary
| | - Zsolt Bacsó
- Department of Biophysics and Cell Biology, Faculty of Medicine, University of Debrecen, H-4032 Debrecen, Hungary
| | - Francisco Ciruela
- Pharmacology Unit, Department of Pathology and Experimental Therapeutics, School of Medicine and Health Sciences, Institute of Neurosciences, University of Barcelona, L'Hospitalet de Llobregat, 08907 Barcelona, Spain
- Neuropharmacology and Pain Group, Neuroscience Program, Bellvitge Institute for Biomedical Research, L'Hospitalet de Llobregat, 08907 Barcelona, Spain
| | - László Virág
- Department of Medical Chemistry, Faculty of Medicine, University of Debrecen, H-4032 Debrecen, Hungary
- MTA-DE Cell Biology and Signaling Research Group, University of Debrecen, H-4032 Debrecen, Hungary
| | - György Haskó
- Department of Anesthesiology, Columbia University, New York, NY 10032, USA
| | - Endre Kókai
- Department of Medical Chemistry, Faculty of Medicine, University of Debrecen, H-4032 Debrecen, Hungary
- Section of Dental Biochemistry, Department of Basic Medical Sciences, Faculty of Dentistry, University of Debrecen, H-4032 Debrecen, Hungary
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Saaiman D, Brand L, de Brouwe G, Janse van Rensburg H, Terre'Blanche G, Legoabe L, Krahe T, Wolmarans D. Striatal adenosine A 2A receptor involvement in normal and large nest building deer mice: perspectives on compulsivity and anxiety. Behav Brain Res 2023; 449:114492. [PMID: 37172739 DOI: 10.1016/j.bbr.2023.114492] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2023] [Revised: 04/25/2023] [Accepted: 05/09/2023] [Indexed: 05/15/2023]
Abstract
Obsessive-compulsive disorder (OCD) is characterized by recurring obsessive thoughts and repetitive behaviors that are often associated with anxiety and perturbations in cortico-striatal signaling. Given the suboptimal response of OCD to current serotonergic interventions, there is a need to better understand the psychobiological mechanisms that may underlie the disorder. In this regard, investigations into adenosinergic processes might be fruitful. Indeed, adenosine modulates both anxiety- and motor behavioral output. Thus, we aimed to explore the potential associations between compulsive-like large nest building (LNB) behavior in deer mice, anxiety and adenosinergic processes. From an initial pool of 120 adult deer mice, 34 normal nest building (NNB)- and 32 LNB-expressing mice of both sexes were selected and exposed to either a normal water (wCTRL) or vehicle control (vCTRL), lorazepam (LOR) or istradefylline (ISTRA) for 7- (LOR) or 28 days after which nesting assessment was repeated and animals screened for anxiety-like behavior in an anxiogenic open field. Mice were then euthanized, the striatal tissue removed on ice and the adenosine A2A receptor expression quantified. Our findings indicate that NNB and LNB behavior are not distinctly associated with measures of generalized anxiety and that ISTRA-induced changes in nesting expression are dissociated from changes in anxiety scores. Further, data from this investigation show that nesting in deer mice is directly related to striatal adenosine signaling, and that LNB is founded upon a lower degree of adenosinergic A2A stimulation.
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Affiliation(s)
- D Saaiman
- Center of Excellence for Pharmaceutical Sciences, Department of Pharmacology, North-West University, Potchefstroom, South Africa
| | - L Brand
- Center of Excellence for Pharmaceutical Sciences, Department of Pharmacology, North-West University, Potchefstroom, South Africa
| | - G de Brouwe
- Center of Excellence for Pharmaceutical Sciences, Department of Pharmacology, North-West University, Potchefstroom, South Africa
| | - H Janse van Rensburg
- Center of Excellence for Pharmaceutical Sciences, Department of Pharmaceutical Chemistry, North-West University, Potchefstroom, South Africa
| | - G Terre'Blanche
- Center of Excellence for Pharmaceutical Sciences, Department of Pharmaceutical Chemistry, North-West University, Potchefstroom, South Africa
| | - L Legoabe
- Center of Excellence for Pharmaceutical Sciences, Department of Pharmaceutical Chemistry, North-West University, Potchefstroom, South Africa
| | - T Krahe
- Department of Psychology, Pontifical Catholic University of Rio de Janeiro (PUC-Rio), Rio de Janeiro, Brazil
| | - D Wolmarans
- Center of Excellence for Pharmaceutical Sciences, Department of Pharmacology, North-West University, Potchefstroom, South Africa.
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Wong TS, Li G, Li S, Gao W, Chen G, Gan S, Zhang M, Li H, Wu S, Du Y. G protein-coupled receptors in neurodegenerative diseases and psychiatric disorders. Signal Transduct Target Ther 2023; 8:177. [PMID: 37137892 PMCID: PMC10154768 DOI: 10.1038/s41392-023-01427-2] [Citation(s) in RCA: 16] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2022] [Revised: 02/17/2023] [Accepted: 03/30/2023] [Indexed: 05/05/2023] Open
Abstract
Neuropsychiatric disorders are multifactorial disorders with diverse aetiological factors. Identifying treatment targets is challenging because the diseases are resulting from heterogeneous biological, genetic, and environmental factors. Nevertheless, the increasing understanding of G protein-coupled receptor (GPCR) opens a new possibility in drug discovery. Harnessing our knowledge of molecular mechanisms and structural information of GPCRs will be advantageous for developing effective drugs. This review provides an overview of the role of GPCRs in various neurodegenerative and psychiatric diseases. Besides, we highlight the emerging opportunities of novel GPCR targets and address recent progress in GPCR drug development.
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Affiliation(s)
- Thian-Sze Wong
- Kobilka Institute of Innovative Drug Discovery, Shenzhen Key Laboratory of Steroid Drug Discovery and Development, School of Medicine, The Chinese University of Hong Kong, 518172, Shenzhen, Guangdong, China
- School of Medicine, Tsinghua University, 100084, Beijing, China
| | - Guangzhi Li
- Institute of Urology, The Affiliated Luohu Hospital of Shenzhen University, Shenzhen University, 518000, Shenzhen, Guangdong, China
| | - Shiliang Li
- Shanghai Key Laboratory of New Drug Design, School of Pharmacy, East China University of Science and Technology, 200237, Shanghai, China
- Innovation Center for AI and Drug Discovery, East China Normal University, 200062, Shanghai, China
| | - Wei Gao
- Kobilka Institute of Innovative Drug Discovery, Shenzhen Key Laboratory of Steroid Drug Discovery and Development, School of Medicine, The Chinese University of Hong Kong, 518172, Shenzhen, Guangdong, China
- Innovation Center for AI and Drug Discovery, East China Normal University, 200062, Shanghai, China
| | - Geng Chen
- Kobilka Institute of Innovative Drug Discovery, Shenzhen Key Laboratory of Steroid Drug Discovery and Development, School of Medicine, The Chinese University of Hong Kong, 518172, Shenzhen, Guangdong, China
| | - Shiyi Gan
- Kobilka Institute of Innovative Drug Discovery, Shenzhen Key Laboratory of Steroid Drug Discovery and Development, School of Medicine, The Chinese University of Hong Kong, 518172, Shenzhen, Guangdong, China
| | - Manzhan Zhang
- Shanghai Key Laboratory of New Drug Design, School of Pharmacy, East China University of Science and Technology, 200237, Shanghai, China
- Innovation Center for AI and Drug Discovery, East China Normal University, 200062, Shanghai, China
| | - Honglin Li
- Shanghai Key Laboratory of New Drug Design, School of Pharmacy, East China University of Science and Technology, 200237, Shanghai, China.
- Innovation Center for AI and Drug Discovery, East China Normal University, 200062, Shanghai, China.
| | - Song Wu
- Institute of Urology, The Affiliated Luohu Hospital of Shenzhen University, Shenzhen University, 518000, Shenzhen, Guangdong, China.
- Department of Urology, South China Hospital, Health Science Center, Shenzhen University, 518116, Shenzhen, Guangdong, China.
| | - Yang Du
- Kobilka Institute of Innovative Drug Discovery, Shenzhen Key Laboratory of Steroid Drug Discovery and Development, School of Medicine, The Chinese University of Hong Kong, 518172, Shenzhen, Guangdong, China.
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9
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Zwolińska W, Dmitrzak-Węglarz M, Słopień A. Biomarkers in Child and Adolescent Depression. Child Psychiatry Hum Dev 2023; 54:266-281. [PMID: 34590201 PMCID: PMC9867683 DOI: 10.1007/s10578-021-01246-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 09/07/2021] [Indexed: 02/07/2023]
Abstract
Despite the significant prevalence of Major Depressive Disorder in the pediatric population, the pathophysiology of this condition remains unclear, and the treatment outcomes poor. Investigating tools that might aid in diagnosing and treating early-onset depression seems essential in improving the prognosis of the future disease course. Recent studies have focused on searching for biomarkers that constitute biochemical indicators of MDD susceptibility, diagnosis, or treatment outcome. In comparison to increasing evidence of possible biomarkers in adult depression, the studies investigating this subject in the youth population are lacking. This narrative review aims to summarize research on molecular and biochemical biomarkers in child and adolescent depression in order to advocate future directions in the research on this subject. More studies on depression involving the youth population seem vital to comprehend the natural course of the disease and identify features that may underlie commonly observed differences in treatment outcomes between adults and children.
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Affiliation(s)
- Weronika Zwolińska
- Department of Child and Adolescent Psychiatry, Poznan University of Medical Sciences, Szpitalna St. 27/33, 60-572, Poznan, Poland.
| | - Monika Dmitrzak-Węglarz
- grid.22254.330000 0001 2205 0971Department of Psychiatric Genetics, Medical Biology Center, Poznan University of Medical Sciences, Rokietnicka St. 8, 60-806 Poznan, Poland
| | - Agnieszka Słopień
- grid.22254.330000 0001 2205 0971Department of Child and Adolescent Psychiatry, Poznan University of Medical Sciences, Szpitalna St. 27/33, 60-572 Poznan, Poland
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Camargo A, Bettio LEB, Rosa PB, Rosa JM, Altê GA, Rodrigues ALS. The antidepressant-like effect of guanosine involves the modulation of adenosine A 1 and A 2A receptors. Purinergic Signal 2022:10.1007/s11302-022-09898-8. [PMID: 36166131 DOI: 10.1007/s11302-022-09898-8] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2022] [Accepted: 09/13/2022] [Indexed: 11/25/2022] Open
Abstract
Guanosine has been considered a promising candidate for antidepressant responses, but if this nucleoside could modulate adenosine A1 (A1R) and A2A (A2AR) receptors to exert antidepressant-like actions remains to be elucidated. This study investigated the role of A1R and A2AR in the antidepressant-like response of guanosine in the mouse tail suspension test and molecular interactions between guanosine and A1R and A2AR by docking analysis. The acute (60 min) administration of guanosine (0.05 mg/kg, p.o.) significantly decreased the immobility time in the tail suspension test, without affecting the locomotor performance in the open-field test, suggesting an antidepressant-like effect. This behavioral response was paralleled with increased A1R and reduced A2AR immunocontent in the hippocampus, but not in the prefrontal cortex, of mice. Guanosine-mediated antidepressant-like effect was not altered by the pretreatment with caffeine (3 mg/kg, i.p., a non-selective adenosine A1R/A2AR antagonist), 8-cyclopentyl-1,3-dipropylxanthine (DPCPX - 2 mg/kg, i.p., a selective adenosine A1R antagonist), or 4-(2-[7-amino-2-{2-furyl}{1,2,4}triazolo-{2,3-a}{1,3,5}triazin-5-yl-amino]ethyl)-phenol (ZM241385 - 1 mg/kg, i.p., a selective adenosine A2AR antagonist). However, the antidepressant-like response of guanosine was completely abolished by adenosine (0.5 mg/kg, i.p., a non-selective adenosine A1R/A2AR agonist), N-6-cyclohexyladenosine (CHA - 0.05 mg/kg, i.p., a selective adenosine A1 receptor agonist), and N-6-[2-(3,5-dimethoxyphenyl)-2-(methylphenyl)ethyl]adenosine (DPMA - 0.1 mg/kg, i.p., a selective adenosine A2A receptor agonist). Finally, docking analysis also indicated that guanosine might interact with A1R and A2AR at the adenosine binding site. Overall, this study reinforces the antidepressant-like of guanosine and unveils a previously unexplored modulation of the modulation of A1R and A2AR in its antidepressant-like effect.
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Affiliation(s)
- Anderson Camargo
- Department of Biochemistry, Center of Biological Sciences, Universidade Federal de Santa Catarina, FlorianopolisSanta Catarina, 88040-900, Brazil
| | - Luis E B Bettio
- Department of Biochemistry, Center of Biological Sciences, Universidade Federal de Santa Catarina, FlorianopolisSanta Catarina, 88040-900, Brazil
| | - Priscila B Rosa
- Department of Biochemistry, Center of Biological Sciences, Universidade Federal de Santa Catarina, FlorianopolisSanta Catarina, 88040-900, Brazil
| | - Julia M Rosa
- Department of Biochemistry, Center of Biological Sciences, Universidade Federal de Santa Catarina, FlorianopolisSanta Catarina, 88040-900, Brazil
| | - Glorister A Altê
- Department of Biochemistry, Center of Biological Sciences, Universidade Federal de Santa Catarina, FlorianopolisSanta Catarina, 88040-900, Brazil
| | - Ana Lúcia S Rodrigues
- Department of Biochemistry, Center of Biological Sciences, Universidade Federal de Santa Catarina, FlorianopolisSanta Catarina, 88040-900, Brazil.
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11
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A Pattern to Link Adenosine Signaling, Circadian System, and Potential Final Common Pathway in the Pathogenesis of Major Depressive Disorder. Mol Neurobiol 2022; 59:6713-6723. [PMID: 35999325 PMCID: PMC9525429 DOI: 10.1007/s12035-022-03001-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2022] [Accepted: 08/07/2022] [Indexed: 11/18/2022]
Abstract
Several studies have reported separate roles of adenosine receptors and circadian clockwork in major depressive disorder. While less evidence exists for regulation of the circadian clock by adenosine signaling, a small number of studies have linked the adenosinergic system, the molecular circadian clock, and mood regulation. In this article, we review relevant advances and propose that adenosine receptor signaling, including canonical and other alternative downstream cellular pathways, regulates circadian gene expression, which in turn may underlie the pathogenesis of mood disorders. Moreover, we summarize the convergent point of these signaling pathways and put forward a pattern by which Homer1a expression, regulated by both cAMP-response element binding protein (CREB) and circadian clock genes, may be the final common pathogenetic mechanism in depression.
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Smith AP, Lindeque JZ, van der Walt MM. Untargeted Metabolomics Reveals the Potential Antidepressant Activity of a Novel Adenosine Receptor Antagonist. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27072094. [PMID: 35408500 PMCID: PMC9000263 DOI: 10.3390/molecules27072094] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/31/2022] [Revised: 03/17/2022] [Accepted: 03/19/2022] [Indexed: 11/16/2022]
Abstract
Depression is the most common mental illness, affecting approximately 4.4% of the global population. Despite many available treatments, some patients exhibit treatment-resistant depression. Thus, the need to develop new and alternative treatments cannot be overstated. Adenosine receptor antagonists have emerged as a promising new class of antidepressants. The current study investigates a novel dual A1/A2A adenosine receptor antagonist, namely 2-(3,4-dihydroxybenzylidene)-4-methoxy-2,3-dihydro-1H-inden-1-one (1a), for antidepressant capabilities by determining its metabolic profiles and comparing them to those of two reference compounds (imipramine and KW-6002). The metabolic profiles were obtained by treating male Sprague-Dawley rats with 1a and the reference compounds and subjecting them to the forced swim test. Serum and brain material was consequently collected from the animals following euthanasia, after which the metabolites were extracted and analyzed through untargeted metabolomics using both 1H-NMR and GC-TOFMS. The current study provides insight into compound 1a's metabolic profile. The metabolic profile of 1a was similar to those of the reference compounds. They potentially exhibit their antidepressive capabilities via downstream effects on amino acid and lipid metabolism.
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Effects of Postnatal Caffeine Exposure on Absence Epilepsy and Comorbid Depression: Results of a Study in WAG/Rij Rats. Brain Sci 2022; 12:brainsci12030361. [PMID: 35326317 PMCID: PMC8946037 DOI: 10.3390/brainsci12030361] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2022] [Revised: 03/03/2022] [Accepted: 03/06/2022] [Indexed: 02/01/2023] Open
Abstract
The present study aims to investigate effect of early caffeine exposure on epileptogenesis and occurrence of absence seizures and comorbid depression in adulthood. For this purpose, Wistar Albino Glaxo from Rijswijk (WAG/Rij) rats were enrolled in a control and two experimental groups on the 7th day after the delivery. The rats in experimental groups received either 10 or 20 mg/kg caffeine subcutaneously while animals in control group had subcutaneous injections of 0.9% saline. The injections started at postnatal day 7 (PND7) and were continued each day for 5 days. At 6–7 months of age, electroencephalogram (EEG) recordings and behavioral recordings in the forced swimming test, sucrose consumption/preference test and locomotor activity test were carried out. At 6 months of age, 10 mg/kg and 20 mg/kg caffeine-treated WAG/Rij rats showed increased immobility latency and active swimming duration in forced swimming test when compared with the untreated controls. In addition, 20 mg/kg caffeine treatment decreased immobility time. In sucrose preference/consumption tests, WAG/Rij rats in 10 mg/kg caffeine group demonstrated higher sucrose consumption and preference compared to untreated controls. The rats treated with 20 mg/kg caffeine showed higher sucrose preference compared to control rats. The exploratory activity of rats in the 10 mg/kg caffeine-treated group was found to be higher than in the 20 mg/kg caffeine-treated and control groups in the locomotor activity test. At 7 months of age, caffeine-treated animals showed a decreased spike-wave discharge (SWD) number compared to the control animals. These results indicate that postnatal caffeine treatment may decrease the number of seizure and depression-like behaviors in WAG/Rij rats in later life. Caffeine blockade of adenosine receptors during the early developmental period may have beneficial effects in reducing seizure frequency and depression-like behaviors in WAG/Rij rat model.
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N 6-substituated adenosine analog J4 attenuates anxiety-like behaviors in mice. Psychopharmacology (Berl) 2022; 239:887-895. [PMID: 35102423 PMCID: PMC9063204 DOI: 10.1007/s00213-022-06079-8] [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: 10/14/2021] [Accepted: 01/27/2022] [Indexed: 10/19/2022]
Abstract
RATIONALE Withdrawal from chronic alcohol exposure produces various physical and mental withdrawal symptoms. Activation of adenosine receptors is known to inhibit withdrawal-induced excitation. However, limited studies investigate how adenosine analogs may prove helpful tools to alleviate alcohol withdrawal-related affective behaviors. OBJECTIVES This study aimed to investigate the effects of J4 compared with saline using the mice vapor or voluntary ethanol drinking model on behavioral endpoints representing ethanol-withdrawal negative emotionality commonly observed during abstinence from chronic alcohol use. METHODS We subjected C57BL/6 J mice to chronic intermittent ethanol (CIE) exposure schedule to investigate how 72-h withdrawal from alcohol alters affective-like behavior. Next, we determined how treatment with J4, a second-generation adenosine analog, influenced affective behaviors produced by alcohol withdrawal. Finally, we determined how J4 treatment alters voluntary ethanol drinking using the two-bottle-choice drinking paradigm. RESULTS Our results show that 72-h withdrawal from chronic intermittent ethanol exposure produces limited affective-like disturbances in male C57BL/6 J mice exposed to 4 cycles ethanol vapor. Most importantly, J4 treatment irrespective of ethanol exposure decreases innate anxiety-like behavior in mice. CONCLUSIONS Withdrawal from chronic intermittent ethanol exposure and subsequent behavioral testing 72 h later produces minimal affective-like behavior. J4 treatment did however reduce marble-burying behavior and increased time spent in open arms of the elevated plus maze, suggesting J4 may be useful as a general anxiolytic.
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Adenosine Receptors in Neuropsychiatric Disorders: Fine Regulators of Neurotransmission and Potential Therapeutic Targets. Int J Mol Sci 2022; 23:ijms23031219. [PMID: 35163142 PMCID: PMC8835915 DOI: 10.3390/ijms23031219] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2021] [Revised: 01/20/2022] [Accepted: 01/21/2022] [Indexed: 12/16/2022] Open
Abstract
Adenosine exerts an important role in the modulation of central nervous system (CNS) activity. Through the interaction with four G-protein coupled receptor (GPCR) subtypes, adenosine subtly regulates neurotransmission, interfering with the dopaminergic, glutamatergic, noradrenergic, serotoninergic, and endocannabinoid systems. The inhibitory and facilitating actions of adenosine on neurotransmission are mainly mediated by A1 and A2A adenosine receptors (ARs), respectively. Given their role in the CNS, ARs are promising therapeutic targets for neuropsychiatric disorders where altered neurotransmission represents the most likely etiological hypothesis. Activating or blocking ARs with specific pharmacological agents could therefore restore the balance of altered neurotransmitter systems, providing the rationale for the potential treatment of these highly debilitating conditions. In this review, we summarize and discuss the most relevant studies concerning AR modulation in psychotic and mood disorders such as schizophrenia, bipolar disorders, depression, and anxiety, as well as neurodevelopment disorders such as autism spectrum disorder (ASD), fragile X syndrome (FXS), attention-deficit hyperactivity disorder (ADHD), and neuropsychiatric aspects of neurodegenerative disorders.
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Lutsenko RV. ON THE QUESTION OF ADENOSINE SYSTEM PARTICIPATION IN THE PATHOGENESIS OF NEUROSES. BULLETIN OF PROBLEMS BIOLOGY AND MEDICINE 2022. [DOI: 10.29254/2077-4214-2022-4-167-76-83] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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17
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Frick A, Persson J, Bodén R. Habitual caffeine consumption moderates the antidepressant effect of dorsomedial intermittent theta-burst transcranial magnetic stimulation. J Psychopharmacol 2021; 35:1536-1541. [PMID: 34872405 PMCID: PMC8652363 DOI: 10.1177/02698811211058975] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
BACKGROUND Potentiating current antidepressant treatment is much needed. Based on animal studies, caffeine may augment the effects of currently available antidepressants. OBJECTIVE Here, we tested whether habitual caffeine consumption moderates the antidepressant effects of repetitive transcranial magnetic stimulation (rTMS) using intermittent theta-burst stimulation (iTBS). METHODS Forty patients with current depressive episodes were randomized to active iTBS (n = 19) or sham treatment (n = 21; shielded side of the coil and weak transcutaneous electrical stimulation) delivered two times per day for 10-15 weekdays. Neuronavigated stimulation was applied to the dorsomedial prefrontal cortex. Symptom improvement was measured using change in self-reported Montgomery-Åsberg Depression Rating Scale (MADRS) scores. Pretreatment habitual caffeine consumption was quantified using self-reports of number of cups of coffee and energy drinks consumed the 2 days before the treatment starts. RESULTS Habitual caffeine consumption was associated with symptom improvement following active iTBS (r = 0.51, 95% confidence interval (CI): 0.08-0.78, p = 0.025) but not following sham treatment (r = -0.02, 95% CI: -0.45 to 0.42, p = 0.938). A multiple regression analysis corroborated the findings by showing a significant caffeine consumption × treatment group interaction (β = 0.62, p = 0.043), but no main effects of treatment group (β = 0.22, p = 0.140) or caffeine consumption (β = -0.01, p = 0.948). No group differences in pretreatment symptom scores or caffeine consumption were detected (p values > 0.86). CONCLUSION Habitual caffeine consumption moderated the antidepressant effect of dorsomedial iTBS, consistent with caffeine improving antidepressant pharmacological treatments in animals. Caffeine is an antagonist of adenosine receptors and may enhance antidepressant effects through downstream dopaminergic targets.
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Affiliation(s)
- Andreas Frick
- The Beijer Laboratory, Department of Neuroscience, Psychiatry, Uppsala University, Uppsala, Sweden
| | - Jonas Persson
- Department of Neuroscience, Psychiatry, Uppsala University, Uppsala, Sweden
| | - Robert Bodén
- Department of Neuroscience, Psychiatry, Uppsala University, Uppsala, Sweden
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18
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Overduin M, Trieber C, Prosser RS, Picard LP, Sheff JG. Structures and Dynamics of Native-State Transmembrane Protein Targets and Bound Lipids. MEMBRANES 2021; 11:451. [PMID: 34204456 PMCID: PMC8235241 DOI: 10.3390/membranes11060451] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/20/2021] [Revised: 06/08/2021] [Accepted: 06/15/2021] [Indexed: 02/06/2023]
Abstract
Membrane proteins work within asymmetric bilayers of lipid molecules that are critical for their biological structures, dynamics and interactions. These properties are lost when detergents dislodge lipids, ligands and subunits, but are maintained in native nanodiscs formed using styrene maleic acid (SMA) and diisobutylene maleic acid (DIBMA) copolymers. These amphipathic polymers allow extraction of multicomponent complexes of post-translationally modified membrane-bound proteins directly from organ homogenates or membranes from diverse types of cells and organelles. Here, we review the structures and mechanisms of transmembrane targets and their interactions with lipids including phosphoinositides (PIs), as resolved using nanodisc systems and methods including cryo-electron microscopy (cryo-EM) and X-ray diffraction (XRD). We focus on therapeutic targets including several G protein-coupled receptors (GPCRs), as well as ion channels and transporters that are driving the development of next-generation native nanodiscs. The design of new synthetic polymers and complementary biophysical tools bodes well for the future of drug discovery and structural biology of native membrane:protein assemblies (memteins).
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Affiliation(s)
- Michael Overduin
- Department of Biochemistry, University of Alberta, Edmonton, AB T6G 2H7, Canada;
| | - Catharine Trieber
- Department of Biochemistry, University of Alberta, Edmonton, AB T6G 2H7, Canada;
| | - R. Scott Prosser
- Department of Chemistry, University of Toronto, UTM, Mississauga, ON L5L 1C6, Canada; (R.S.P.); (L.-P.P.)
| | - Louis-Philippe Picard
- Department of Chemistry, University of Toronto, UTM, Mississauga, ON L5L 1C6, Canada; (R.S.P.); (L.-P.P.)
| | - Joey G. Sheff
- Human Health Therapeutics Research Centre, National Research Council Canada, Ottawa, ON K1A 0R6, Canada;
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19
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Paudel P, Seong SH, Park SE, Ryu JH, Jung HA, Choi JS. In Vitro and In Silico Characterization of G-Protein Coupled Receptor (GPCR) Targets of Phlorofucofuroeckol-A and Dieckol. Mar Drugs 2021; 19:326. [PMID: 34199834 PMCID: PMC8228075 DOI: 10.3390/md19060326] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2021] [Revised: 05/25/2021] [Accepted: 06/02/2021] [Indexed: 12/12/2022] Open
Abstract
Phlorotannins are polyphenolic compounds in marine alga, especially the brown algae. Among numerous phlorotannins, dieckol and phlorofucofuroeckol-A (PFF-A) are the major ones and despite a wider biological activity profile, knowledge of the G protein-coupled receptor (GPCR) targets of these phlorotannins is lacking. This study explores prime GPCR targets of the two phlorotannins. In silico proteocheminformatics modeling predicted twenty major protein targets and in vitro functional assays showed a good agonist effect at the α2C adrenergic receptor (α2CAR) and an antagonist effect at the adenosine 2A receptor (A2AR), δ-opioid receptor (δ-OPR), glucagon-like peptide-1 receptor (GLP-1R), and 5-hydroxytryptamine 1A receptor (5-TH1AR) of both phlorotannins. Besides, dieckol showed an antagonist effect at the vasopressin 1A receptor (V1AR) and PFF-A showed a promising agonist effect at the cannabinoid 1 receptor and an antagonist effect at V1AR. In silico molecular docking simulation enabled us to investigate and identify distinct binding features of these phlorotannins to the target proteins. The docking results suggested that dieckol and PFF-A bind to the crystal structures of the proteins with good affinity involving key interacting amino acid residues comparable to reference ligands. Overall, the present study suggests α2CAR, A2AR, δ-OPR, GLP-1R, 5-TH1AR, CB1R, and V1AR as prime receptor targets of dieckol and PFF-A.
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Affiliation(s)
- Pradeep Paudel
- Department of Food and Life Science, Pukyong National University, Busan 48513, Korea; (P.P.); (S.H.S.); (S.E.P.)
- National Center for Natural Products Research, Research Institute of Pharmaceutical Sciences, The University of Mississippi, Oxford, MS 38677, USA
| | - Su Hui Seong
- Department of Food and Life Science, Pukyong National University, Busan 48513, Korea; (P.P.); (S.H.S.); (S.E.P.)
- Natural Products Research Division, Honam National Institute of Biological Resource, Mokpo 58762, Korea
| | - Se Eun Park
- Department of Food and Life Science, Pukyong National University, Busan 48513, Korea; (P.P.); (S.H.S.); (S.E.P.)
- Department of Biomedical Science, Asan Medical Institute of Convergence Science and Technology, Seoul 05505, Korea
| | - Jong Hoon Ryu
- Department of Life and Nanopharmaceutical Science, Kyung Hee University, Seoul 02447, Korea;
| | - Hyun Ah Jung
- Department of Food Science and Human Nutrition, Jeonbuk National University, Jeonju 54896, Korea
| | - Jae Sue Choi
- Department of Food and Life Science, Pukyong National University, Busan 48513, Korea; (P.P.); (S.H.S.); (S.E.P.)
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20
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Maltsev DV, Spasov AA, Miroshnikov MV, Skripka MO. Current Approaches to the Search of Anxiolytic Drugs. RUSSIAN JOURNAL OF BIOORGANIC CHEMISTRY 2021. [DOI: 10.1134/s1068162021030122] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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21
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Almeida RF, Ferreira TP, David CVC, Abreu E Silva PC, Dos Santos SA, Rodrigues ALS, Elisabetsky E. Guanine-Based Purines as an Innovative Target to Treat Major Depressive Disorder. Front Pharmacol 2021; 12:652130. [PMID: 33927625 PMCID: PMC8076783 DOI: 10.3389/fphar.2021.652130] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2021] [Accepted: 03/01/2021] [Indexed: 01/18/2023] Open
Affiliation(s)
- Roberto F Almeida
- Departamento de Ciências Biológicas, Programa de Pós-Graduação em Ciências Biológicas, Universidade Federal de Ouro Preto (UFOP), Ouro Preto, Brazil.,Departamento de Bioquímica, Programa de Pós-Graduação em Ciências Biológicas: Bioquímica, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
| | - Tiago P Ferreira
- Departamento de Ciências Biológicas, Programa de Pós-Graduação em Ciências Biológicas, Universidade Federal de Ouro Preto (UFOP), Ouro Preto, Brazil
| | - Camila V C David
- Departamento de Ciências Biológicas, Programa de Pós-Graduação em Ciências Biológicas, Universidade Federal de Ouro Preto (UFOP), Ouro Preto, Brazil
| | - Paulo C Abreu E Silva
- Departamento de Ciências Biológicas, Programa de Pós-Graduação em Ciências Biológicas, Universidade Federal de Ouro Preto (UFOP), Ouro Preto, Brazil
| | - Sulamita A Dos Santos
- Departamento de Ciências Biológicas, Programa de Pós-Graduação em Ciências Biológicas, Universidade Federal de Ouro Preto (UFOP), Ouro Preto, Brazil
| | - Ana L S Rodrigues
- Departamento de Bioquímica, Centro de Ciências Biológicas, Universidade Federal de Santa Catarina (UFSC), Florianópolis, Brazil
| | - Elaine Elisabetsky
- Departamento de Bioquímica, Programa de Pós-Graduação em Ciências Biológicas: Bioquímica, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
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22
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Szopa A, Socała K, Serefko A, Doboszewska U, Wróbel A, Poleszak E, Wlaź P. Purinergic transmission in depressive disorders. Pharmacol Ther 2021; 224:107821. [PMID: 33607148 DOI: 10.1016/j.pharmthera.2021.107821] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2020] [Accepted: 12/11/2020] [Indexed: 12/13/2022]
Abstract
Purinergic signaling involves the actions of purine nucleotides and nucleosides (such as adenosine) at P1 (adenosine), P2X, and P2Y receptors. Here, we present recent data contributing to a comprehensive overview of the association between purinergic signaling and depression. We start with background information on adenosine production and metabolism, followed by a detailed characterization of P1 and P2 receptors, with an emphasis on their expression and function in the brain as well as on their ligands. We provide data suggestive of altered metabolism of adenosine in depressed patients, which might be regarded as a disease biomarker. We then turn to considerable amount of preclinical/behavioral data obtained with the aid of the forced swim test, tail suspension test, learned helplessness model, or unpredictable chronic mild stress model and genetic activation/inactivation of P1 or P2 receptors as well as nonselective or selective ligands of P1 or P2 receptors. We also aimed to discuss the reason underlying discrepancies observed in such studies.
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Affiliation(s)
- Aleksandra Szopa
- Department of Applied and Social Pharmacy, Laboratory of Preclinical Testing, Medical University of Lublin, Chodźki 1, PL 20-093 Lublin, Poland.
| | - Katarzyna Socała
- Department of Animal Physiology and Pharmacology, Institute of Biological Sciences, Maria Curie-Skłodowska University, Akademicka 19, PL 20-033 Lublin, Poland
| | - Anna Serefko
- Department of Applied and Social Pharmacy, Laboratory of Preclinical Testing, Medical University of Lublin, Chodźki 1, PL 20-093 Lublin, Poland
| | - Urszula Doboszewska
- Department of Animal Physiology and Pharmacology, Institute of Biological Sciences, Maria Curie-Skłodowska University, Akademicka 19, PL 20-033 Lublin, Poland
| | - Andrzej Wróbel
- Second Department of Gynecology, Medical University of Lublin, Jaczewskiego 8, PL 20-090 Lublin, Poland
| | - Ewa Poleszak
- Department of Applied and Social Pharmacy, Laboratory of Preclinical Testing, Medical University of Lublin, Chodźki 1, PL 20-093 Lublin, Poland.
| | - Piotr Wlaź
- Department of Animal Physiology and Pharmacology, Institute of Biological Sciences, Maria Curie-Skłodowska University, Akademicka 19, PL 20-033 Lublin, Poland.
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Boknik P, Eskandar J, Hofmann B, Zimmermann N, Neumann J, Gergs U. Role of Cardiac A 2A Receptors Under Normal and Pathophysiological Conditions. Front Pharmacol 2021; 11:627838. [PMID: 33574762 PMCID: PMC7871008 DOI: 10.3389/fphar.2020.627838] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2020] [Accepted: 12/15/2020] [Indexed: 12/12/2022] Open
Abstract
This review presents an overview of cardiac A2A-adenosine receptors The localization of A2A-AR in the various cell types that encompass the heart and the role they play in force regulation in various mammalian species are depicted. The putative signal transduction systems of A2A-AR in cells in the living heart, as well as the known interactions of A2A-AR with membrane-bound receptors, will be addressed. The possible role that the receptors play in some relevant cardiac pathologies, such as persistent or transient ischemia, hypoxia, sepsis, hypertension, cardiac hypertrophy, and arrhythmias, will be reviewed. Moreover, the cardiac utility of A2A-AR as therapeutic targets for agonistic and antagonistic drugs will be discussed. Gaps in our knowledge about the cardiac function of A2A-AR and future research needs will be identified and formulated.
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Affiliation(s)
- P. Boknik
- Institut für Pharmakologie und Toxikologie, Medizinische Fakultät, Westfälische Wilhelms-Universität, Münster, Germany
| | - J. Eskandar
- Institut für Pharmakologie und Toxikologie, Medizinische Fakultät, Westfälische Wilhelms-Universität, Münster, Germany
| | - B. Hofmann
- Cardiac Surgery, Medizinische Fakultät, Martin-Luther-Universität Halle-Wittenberg, Halle, Germany
| | - N. Zimmermann
- Bundesinstitut für Arzneimittel und Medizinprodukte, Bonn, Germany
| | - J. Neumann
- Institut für Pharmakologie und Toxikologie, Medizinische Fakultät, Martin-Luther-Universität Halle-Wittenberg, Halle, Germany
| | - U. Gergs
- Institut für Pharmakologie und Toxikologie, Medizinische Fakultät, Martin-Luther-Universität Halle-Wittenberg, Halle, Germany
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Therapeutic potential of targeting G protein-gated inwardly rectifying potassium (GIRK) channels in the central nervous system. Pharmacol Ther 2021; 223:107808. [PMID: 33476640 DOI: 10.1016/j.pharmthera.2021.107808] [Citation(s) in RCA: 47] [Impact Index Per Article: 15.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2020] [Accepted: 01/05/2021] [Indexed: 12/15/2022]
Abstract
G protein-gated inwardly rectifying potassium channels (Kir3/GirK) are important for maintaining resting membrane potential, cell excitability and inhibitory neurotransmission. Coupled to numerous G protein-coupled receptors (GPCRs), they mediate the effects of many neurotransmitters, neuromodulators and hormones contributing to the general homeostasis and particular synaptic plasticity processes, learning, memory and pain signaling. A growing number of behavioral and genetic studies suggest a critical role for the appropriate functioning of the central nervous system, as well as their involvement in many neurologic and psychiatric conditions, such as neurodegenerative diseases, mood disorders, attention deficit hyperactivity disorder, schizophrenia, epilepsy, alcoholism and drug addiction. Hence, GirK channels emerge as a very promising tool to be targeted in the current scenario where these conditions already are or will become a global public health problem. This review examines recent findings on the physiology, function, dysfunction, and pharmacology of GirK channels in the central nervous system and highlights the relevance of GirK channels as a worthful potential target to improve therapies for related diseases.
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25
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Zhou B, Zhu Z, Ransom BR, Tong X. Oligodendrocyte lineage cells and depression. Mol Psychiatry 2021; 26:103-117. [PMID: 33144710 PMCID: PMC7815509 DOI: 10.1038/s41380-020-00930-0] [Citation(s) in RCA: 97] [Impact Index Per Article: 32.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/29/2020] [Revised: 10/01/2020] [Accepted: 10/22/2020] [Indexed: 12/25/2022]
Abstract
Depression is a common mental illness, affecting more than 300 million people worldwide. Decades of investigation have yielded symptomatic therapies for this disabling condition but have not led to a consensus about its pathogenesis. There are data to support several different theories of causation, including the monoamine hypothesis, hypothalamic-pituitary-adrenal axis changes, inflammation and immune system alterations, abnormalities of neurogenesis and a conducive environmental milieu. Research in these areas and others has greatly advanced the current understanding of depression; however, there are other, less widely known theories of pathogenesis. Oligodendrocyte lineage cells, including oligodendrocyte progenitor cells and mature oligodendrocytes, have numerous important functions, which include forming myelin sheaths that enwrap central nervous system axons, supporting axons metabolically, and mediating certain forms of neuroplasticity. These specialized glial cells have been implicated in psychiatric disorders such as depression. In this review, we summarize recent findings that shed light on how oligodendrocyte lineage cells might participate in the pathogenesis of depression, and we discuss new approaches for targeting these cells as a novel strategy to treat depression.
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Affiliation(s)
- Butian Zhou
- Center for Brain Science, Shanghai Children's Medical Center; Department of Anatomy and Physiology, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Zhongqun Zhu
- Department of Cardiothoracic Surgery, Center for Brain Science, Shanghai Children's Medical Center, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Bruce R Ransom
- Neuroscience Department, City University of Hong Kong, Hong Kong, China.
| | - Xiaoping Tong
- Center for Brain Science, Shanghai Children's Medical Center; Department of Anatomy and Physiology, Shanghai Jiao Tong University School of Medicine, Shanghai, China.
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Aboumanei MH, Mahmoud AF. Design and development of a proniosomal transdermal drug delivery system of caffeine for management of migraine: In vitro characterization, 131I-radiolabeling and in vivo biodistribution studies. Process Biochem 2020. [DOI: 10.1016/j.procbio.2020.07.018] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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Oxidative stress and neuroinflammation should be both considered in the occurrence of fatigue and depression in multiple sclerosis. Acta Neurol Belg 2020; 120:853-861. [PMID: 30182258 DOI: 10.1007/s13760-018-1015-8] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2018] [Accepted: 08/30/2018] [Indexed: 10/28/2022]
Abstract
Oxidative stress and neuroinflammation have a role in the pathogenesis of multiple sclerosis (MS) and in depression. Fatigue is the most disabling symptom in patients with MS and could also be a part of depressive symptomatology. In this study, we measured the serum levels of uric acid (UA) as a marker of oxidative stress and C-reactive protein (CRP) as an inflammatory marker, in 98 patients with MS in relapse and remitting phase of illness and 35 healthy subjects. Degree of depressive symptomatology and fatigue were assessed with Beck's Depression Inventory (BDI) and Fatigue Severity Scale (FSS). Further, we examined the possible correlation of these biomarkers with symptoms of depression and fatigue. Relapse and remitting MS had a lower serum UA levels than controls (236.97 ± 9.25 µmol/L vs. 268.27 ± 0.09 µmol/L vs. 314.82 ± 11.02 µmol/L; p = 0.000), while sera levels of CRP were higher in relapse than remitting patients (4.46 ± 0.40 mg/L vs. 1.01 ± 0.38 mg/L; p = 0.000). Patients in relapse had higher BDI scores (15.68 ± 16.62 vs. 8.36 ± 7.10; p = 0.045). Decreased UA levels showed weak negative correlation with the presence of sadness and disturbed daily activities, higher CRP levels positively correlated with severe depression and the correlation between depression and fatigue was also observed (p < 0.05). It is possible that decreased UA levels lead to sadness, disturbed daily activities and severe disability. Every attack of CRP elevation in relapse could additionally precipitate the depression onset. The clinicians must pay special attention to early detection of fatigue because it could precede depression and improve further treatment.
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Vieira G, Cavalli J, Gonçalves ECD, Braga SFP, Ferreira RS, Santos ARS, Cola M, Raposo NRB, Capasso R, Dutra RC. Antidepressant-Like Effect of Terpineol in an Inflammatory Model of Depression: Involvement of the Cannabinoid System and D2 Dopamine Receptor. Biomolecules 2020; 10:E792. [PMID: 32443870 PMCID: PMC7280984 DOI: 10.3390/biom10050792] [Citation(s) in RCA: 41] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2020] [Revised: 05/13/2020] [Accepted: 05/15/2020] [Indexed: 12/27/2022] Open
Abstract
Depression has a multifactorial etiology that arises from environmental, psychological, genetic, and biological factors. Environmental stress and genetic factors acting through immunological and endocrine responses generate structural and functional changes in the brain, inducing neurogenesis and neurotransmission dysfunction. Terpineol, monoterpenoid alcohol, has shown immunomodulatory and neuroprotective effects, but there is no report about its antidepressant potential. Herein, we used a single lipopolysaccharide (LPS) injection to induce a depressive-like effect in the tail suspension test (TST) and the splash test (ST) for a preventive and therapeutic experimental schedule. Furthermore, we investigated the antidepressant-like mechanism of action of terpineol while using molecular and pharmacological approaches. Terpineol showed a coherent predicted binding mode mainly against CB1 and CB2 receptors and also against the D2 receptor during docking modeling analyses. The acute administration of terpineol produced the antidepressant-like effect, since it significantly reduced the immobility time in TST (100-200 mg/kg, p.o.) as compared to the control group. Moreover, terpineol showed an antidepressant-like effect in the preventive treatment that was blocked by a nonselective dopaminergic receptor antagonist (haloperidol), a selective dopamine D2 receptor antagonist (sulpiride), a selective CB1 cannabinoid receptor antagonist/inverse agonist (AM281), and a potent and selective CB2 cannabinoid receptor inverse agonist (AM630), but it was not blocked by a nonselective adenosine receptor antagonist (caffeine) or a β-adrenoceptor antagonist (propranolol). In summary, molecular docking suggests that CB1 and CB2 receptors are the most promising targets of terpineol action. Our data showed terpineol antidepressant-like modulation by CB1 and CB2 cannabinoid receptors and D2-dopaminergic receptors to further corroborate our molecular evidence.
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Affiliation(s)
- Graziela Vieira
- Laboratory of Autoimmunity and Immunopharmacology (LAIF), Department of Health Sciences, Campus Araranguá, Universidade Federal de Santa Catarina, Araranguá 88906-072, Brazil; (G.V.); (J.C.); (E.C.D.G.); (M.C.)
| | - Juliana Cavalli
- Laboratory of Autoimmunity and Immunopharmacology (LAIF), Department of Health Sciences, Campus Araranguá, Universidade Federal de Santa Catarina, Araranguá 88906-072, Brazil; (G.V.); (J.C.); (E.C.D.G.); (M.C.)
| | - Elaine C. D. Gonçalves
- Laboratory of Autoimmunity and Immunopharmacology (LAIF), Department of Health Sciences, Campus Araranguá, Universidade Federal de Santa Catarina, Araranguá 88906-072, Brazil; (G.V.); (J.C.); (E.C.D.G.); (M.C.)
- Post-Graduate Program of Neuroscience, Center of Biological Science, Campus Florianópolis, Universidade Federal de Santa Catarina, Florianópolis 88040-900, Brazil;
| | - Saulo F. P. Braga
- Laboratório de Modelagem Molecular e Planejamento de Fármacos, Departamento de Bioquímica e Imunologia, Universidade Federal de Minas Gerais, Belo Horizonte 31270-901, Brazil; (S.F.P.B.); (R.S.F.)
| | - Rafaela S. Ferreira
- Laboratório de Modelagem Molecular e Planejamento de Fármacos, Departamento de Bioquímica e Imunologia, Universidade Federal de Minas Gerais, Belo Horizonte 31270-901, Brazil; (S.F.P.B.); (R.S.F.)
| | - Adair R. S. Santos
- Post-Graduate Program of Neuroscience, Center of Biological Science, Campus Florianópolis, Universidade Federal de Santa Catarina, Florianópolis 88040-900, Brazil;
- Laboratory of Neurobiology of Pain and Inflammation, Department of Physiological Sciences, Center of Biological Sciences, Universidade Federal de Santa Catarina, Florianópolis 88040-900, Brazil
| | - Maíra Cola
- Laboratory of Autoimmunity and Immunopharmacology (LAIF), Department of Health Sciences, Campus Araranguá, Universidade Federal de Santa Catarina, Araranguá 88906-072, Brazil; (G.V.); (J.C.); (E.C.D.G.); (M.C.)
| | - Nádia R. B. Raposo
- Center for Research and Innovation in Health Sciences (NUPICS), Faculty of Pharmacy, Universidade Federal de Juiz de Fora, Juiz de For a 36036-330, Brazil;
| | - Raffaele Capasso
- Department of Agricultural Sciences, University of Naples Federico II, 80055 Portici, Italy
- Endocannabinoid Research Group, 80078 Naples, Italy
| | - Rafael C. Dutra
- Laboratory of Autoimmunity and Immunopharmacology (LAIF), Department of Health Sciences, Campus Araranguá, Universidade Federal de Santa Catarina, Araranguá 88906-072, Brazil; (G.V.); (J.C.); (E.C.D.G.); (M.C.)
- Post-Graduate Program of Neuroscience, Center of Biological Science, Campus Florianópolis, Universidade Federal de Santa Catarina, Florianópolis 88040-900, Brazil;
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Relationship between adenosine A2a receptor polymorphism rs5751876 and fractional flow reserve during percutaneous coronary intervention. Heart Vessels 2020; 35:1349-1359. [PMID: 32367186 DOI: 10.1007/s00380-020-01609-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/25/2019] [Accepted: 04/17/2020] [Indexed: 10/24/2022]
Abstract
Fractional flow reserve (FFR) assessed during adenosine-induced maximal hyperemia has emerged as a useful tool for the guidance of percutaneous coronary interventions (PCI). However, interindividual variability in the response to adenosine has been claimed as a major limitation to the use of adenosine for the measurement of FFR, carrying the risk of underestimating the severity of coronary stenoses, with potential negative prognostic consequences. Genetic variants of the adenosine receptor A2a (ADORA2A gene), located in the coronary circulation, have been involved in the modulation of the hyperemic response to adenosine. However, no study has so far evaluated the impact of the single nucleotide polymorphism rs5751876 of ADORA2A on the measurement of FFR in patients undergoing percutaneous coronary intervention that was, therefore, the aim of our study. We included patients undergoing coronary angiography and FFR assessment for intermediate (40-70%) coronary lesions. FFR measurement was performed by pressure-recording guidewire (Prime Wire, Volcano), after induction of hyperemia with intracoronary boli of adenosine (from 60 to 1440 μg, with dose doubling at each step). Restriction fragment length polymorphism (RFLP) analysis was performed to assess the presence of rs5751876 C>T polymorphism of ADORA2a receptor. We included 204 patients undergoing FFR measurement of 231 coronary lesions. A total of 134 patients carried the polymorphism (T allele), of whom 41 (30.6%) in homozygosis (T/T).Main clinical and angiographic features did not differ according to ADORA2A genotype. The rs5751876 C>T polymorphism did not affect mean FFR values (p = 0.91), the percentage of positive FFR (p = 0.54) and the duration of maximal hyperemia. However, the time to recovery to baseline FFR values was more prolonged among the T-allele carriers as compared to wild-type patients (p = 0.04). Based on these results, in patients with intermediate coronary stenoses undergoing FFR assessment with adenosine, the polymorphism rs5751876 of ADORA2A does not affect the peak hyperemic response to adenosine and the results of FFR. However, a more prolonged effect of adenosine was observed in T-carriers.
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Van der Veeken L, Grönlund S, Gerdtsson E, Holmqvist B, Deprest J, Ley D, Bruschettini M. Long-term neurological effects of neonatal caffeine treatment in a rabbit model of preterm birth. Pediatr Res 2020; 87:1011-1018. [PMID: 31812154 DOI: 10.1038/s41390-019-0718-8] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/13/2019] [Revised: 11/20/2019] [Accepted: 11/26/2019] [Indexed: 01/31/2023]
Abstract
BACKGROUND Neonatal caffeine treatment might affect brain development. Long-term studies show conflicting results on brain-related outcomes. Herein we aimed to investigate the long-term effects of neonatal caffeine administration in a rabbit model of preterm birth. METHODS Preterm (born day 29) and term (day 32) pups were raised by wet nurses and allocated to treatment with saline or caffeine for 7 or 17 days. At pre-puberty, neurobehavioral tests were performed and brains were harvested for immunostaining of neurons, synapses, myelin, and astrocytes. RESULTS Survival was lower in preterm saline pups than in controls, whereas caffeine-treated preterm pups did not differ from term control pups. Preterm saline pups covered less distance compared to controls and were more likely to stay in the peripheral zone of the open field. Corresponding differences were not seen in preterm caffeine pups. Preterm animals had lower neuron density compared to controls, which was not influenced by caffeine treatment. Synaptic density, astrocytes, and myelin were not different between groups. CONCLUSION Caffeine appeared to be safe. All preterm rabbits had lower neuron density but anxious behavior seen in preterm saline rabbits was not seen in caffeine-treated preterm pups.
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Affiliation(s)
- Lennart Van der Veeken
- Department of Development and Regeneration, Cluster Woman and Child, Group Biomedical Sciences, KU Leuven University of Leuven, Leuven, Belgium
| | - Susanne Grönlund
- Department of Clinical Sciences Lund, Paediatrics, Lund University, Skane University Hospital, Lund, Sweden
| | | | | | - Jan Deprest
- Department of Development and Regeneration, Cluster Woman and Child, Group Biomedical Sciences, KU Leuven University of Leuven, Leuven, Belgium.,Institute for Women's Health, University College London, London, UK
| | - David Ley
- Department of Clinical Sciences Lund, Paediatrics, Lund University, Skane University Hospital, Lund, Sweden
| | - Matteo Bruschettini
- Department of Clinical Sciences Lund, Paediatrics, Lund University, Skane University Hospital, Lund, Sweden.
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Effendi WI, Nagano T, Kobayashi K, Nishimura Y. Focusing on Adenosine Receptors as a Potential Targeted Therapy in Human Diseases. Cells 2020; 9:E785. [PMID: 32213945 PMCID: PMC7140859 DOI: 10.3390/cells9030785] [Citation(s) in RCA: 83] [Impact Index Per Article: 20.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2020] [Revised: 03/21/2020] [Accepted: 03/23/2020] [Indexed: 02/07/2023] Open
Abstract
Adenosine is involved in a range of physiological and pathological effects through membrane-bound receptors linked to G proteins. There are four subtypes of adenosine receptors, described as A1AR, A2AAR, A2BAR, and A3AR, which are the center of cAMP signal pathway-based drug development. Several types of agonists, partial agonists or antagonists, and allosteric substances have been synthesized from these receptors as new therapeutic drug candidates. Research efforts surrounding A1AR and A2AAR are perhaps the most enticing because of their concentration and affinity; however, as a consequence of distressing conditions, both A2BAR and A3AR levels might accumulate. This review focuses on the biological features of each adenosine receptor as the basis of ligand production and describes clinical studies of adenosine receptor-associated pharmaceuticals in human diseases.
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Affiliation(s)
- Wiwin Is Effendi
- Division of Respiratory Medicine, Department of Internal Medicine, Kobe University Graduate School of Medicine, 7-5-1 Kusunoki-cho, Chuo-ku, Kobe, 650-0017, Japan; (W.I.E.); (K.K.); (Y.N.)
- Department of Pulmonology and Respiratory Medicine, Medical Faculty of Airlangga University, Surabaya 60131, Indonesia
| | - Tatsuya Nagano
- Division of Respiratory Medicine, Department of Internal Medicine, Kobe University Graduate School of Medicine, 7-5-1 Kusunoki-cho, Chuo-ku, Kobe, 650-0017, Japan; (W.I.E.); (K.K.); (Y.N.)
| | - Kazuyuki Kobayashi
- Division of Respiratory Medicine, Department of Internal Medicine, Kobe University Graduate School of Medicine, 7-5-1 Kusunoki-cho, Chuo-ku, Kobe, 650-0017, Japan; (W.I.E.); (K.K.); (Y.N.)
| | - Yoshihiro Nishimura
- Division of Respiratory Medicine, Department of Internal Medicine, Kobe University Graduate School of Medicine, 7-5-1 Kusunoki-cho, Chuo-ku, Kobe, 650-0017, Japan; (W.I.E.); (K.K.); (Y.N.)
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Purinergic Signaling and Related Biomarkers in Depression. Brain Sci 2020; 10:brainsci10030160. [PMID: 32178222 PMCID: PMC7139781 DOI: 10.3390/brainsci10030160] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2020] [Revised: 03/09/2020] [Accepted: 03/11/2020] [Indexed: 12/12/2022] Open
Abstract
It is established that purinergic signaling can shape a wide range of physiological functions, including neurotransmission and neuromodulation. The purinergic system may play a role in the pathophysiology of mood disorders, influencing neurotransmitter systems and hormonal pathways of the hypothalamic-pituitary-adrenal axis. Treatment with mood stabilizers and antidepressants can lead to changes in purinergic signaling. In this overview, we describe the biological background on the possible link between the purinergic system and depression, possibly involving changes in adenosine- and ATP-mediated signaling at P1 and P2 receptors, respectively. Furthermore, evidence on the possible antidepressive effects of non-selective adenosine antagonist caffeine and other purinergic modulators is reviewed. In particular, A2A and P2X7 receptors have been identified as potential targets for depression treatment. Preclinical studies highlight that both selective A2A and P2X7 antagonists may have antidepressant effects and potentiate responses to antidepressant treatments. Consistently, recent studies feature the possible role of the purinergic system peripheral metabolites as possible biomarkers of depression. In particular, variations of serum uric acid, as the end product of purinergic metabolism, have been found in depression. Although several open questions remain, the purinergic system represents a promising research area for insights into the molecular basis of depression.
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Purinergic system and suicidal behavior: exploring the link between adenosine A2A receptors and depressive/impulsive features. Mol Psychiatry 2020; 25:512-513. [PMID: 29712997 DOI: 10.1038/s41380-018-0057-x] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/10/2017] [Revised: 02/09/2018] [Accepted: 02/19/2018] [Indexed: 02/06/2023]
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Pianp deficiency links GABA B receptor signaling and hippocampal and cerebellar neuronal cell composition to autism-like behavior. Mol Psychiatry 2020; 25:2979-2993. [PMID: 31511635 PMCID: PMC7577901 DOI: 10.1038/s41380-019-0519-9] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/04/2019] [Revised: 05/31/2019] [Accepted: 07/18/2019] [Indexed: 12/17/2022]
Abstract
Pianp (also known as Leda-1) is a type I transmembrane protein with preferential expression in the mammalian CNS. Its processing is characterized by proteolytic cleavage by a range of proteases including Adam10, Adam17, MMPs, and the γ-secretase complex. Pianp can interact with Pilrα and the GB1a subunit of the GABAB receptor (GBR) complex. A recent case description of a boy with global developmental delay and homozygous nonsense variant in PIANP supports the hypothesis that PIANP is involved in the control of behavioral traits in mammals. To investigate the physiological functions of Pianp, constitutive, global knockout mice were generated and comprehensively analyzed. Broad assessment did not indicate malformation or malfunction of internal organs. In the brain, however, decreased sizes and altered cellular compositions of the dentate gyrus as well as the cerebellum, including a lower number of cerebellar Purkinje cells, were identified. Functionally, loss of Pianp led to impaired presynaptic GBR-mediated inhibition of glutamate release and altered gene expression in the cortex, hippocampus, amygdala, and hypothalamus including downregulation of Erdr1, a gene linked to autism-like behavior. Behavioral phenotyping revealed that Pianp deficiency leads to context-dependent enhanced anxiety and spatial learning deficits, an altered stress response, severely impaired social interaction, and enhanced repetitive behavior, which all represent characteristic features of an autism spectrum disorder-like phenotype. Altogether, Pianp represents a novel candidate gene involved in autism-like behavior, cerebellar and hippocampal pathology, and GBR signaling.
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LeBlanc KH, London TD, Szczot I, Bocarsly ME, Friend DM, Nguyen KP, Mengesha MM, Rubinstein M, Alvarez VA, Kravitz AV. Striatopallidal neurons control avoidance behavior in exploratory tasks. Mol Psychiatry 2020; 25:491-505. [PMID: 29695836 PMCID: PMC6202282 DOI: 10.1038/s41380-018-0051-3] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/25/2017] [Revised: 02/05/2018] [Accepted: 02/19/2018] [Indexed: 12/22/2022]
Abstract
The dorsal striatum has been linked to decision-making under conflict, but the mechanism by which striatal neurons contribute to approach-avoidance conflicts remains unclear. We hypothesized that striatopallidal dopamine D2 receptor (D2R)-expressing neurons promote avoidance, and tested this hypothesis in two exploratory approach-avoidance conflict paradigms in mice: the elevated zero maze and open field. Genetic elimination of D2Rs on striatopallidal neurons (iMSNs), but not other neural populations, increased avoidance of the open areas in both tasks, in a manner that was dissociable from global changes in movement. Population calcium activity of dorsomedial iMSNs was disrupted in mice lacking D2Rs on iMSNs, suggesting that disrupted output of iMSNs contributes to heightened avoidance behavior. Consistently, artificial disruption of iMSN output with optogenetic stimulation heightened avoidance of open areas of these tasks, while inhibition of iMSN output reduced avoidance. We conclude that dorsomedial striatal iMSNs control approach-avoidance conflicts in exploratory tasks, and highlight this neural population as a potential target for reducing avoidance in anxiety disorders.
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Affiliation(s)
- Kimberly H. LeBlanc
- grid.94365.3d0000 0001 2297 5165National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, MD 20892 USA
| | - Tanisha D. London
- grid.94365.3d0000 0001 2297 5165National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, MD 20892 USA
| | - Ilona Szczot
- grid.94365.3d0000 0001 2297 5165National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, MD 20892 USA
| | - Miriam E. Bocarsly
- grid.94365.3d0000 0001 2297 5165National Institute on Alcohol Abuse and Alcoholism, National Institutes of Health, Bethesda, MD 20892 USA
| | - Danielle M. Friend
- grid.94365.3d0000 0001 2297 5165National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, MD 20892 USA
| | - Katrina P. Nguyen
- grid.94365.3d0000 0001 2297 5165National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, MD 20892 USA
| | - Marda M. Mengesha
- grid.94365.3d0000 0001 2297 5165National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, MD 20892 USA
| | - Marcelo Rubinstein
- grid.423606.50000 0001 1945 2152Instituto de Investigaciones en Ingeniería Genética y Biología Molecular, CONICET, Buenos Aires, C1428ADN Argentina ,grid.7345.50000 0001 0056 1981FCEN, Universidad de Buenos Aires, Buenos Aires, C1428EGA Argentina ,grid.214458.e0000000086837370Department of Molecular and Integrative Physiology, University of Michigan Medical School, Ann Arbor, MI 48109 USA
| | - Veronica A. Alvarez
- grid.94365.3d0000 0001 2297 5165National Institute on Alcohol Abuse and Alcoholism, National Institutes of Health, Bethesda, MD 20892 USA
| | - Alexxai V. Kravitz
- grid.94365.3d0000 0001 2297 5165National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, MD 20892 USA ,grid.94365.3d0000 0001 2297 5165National Institute on Drug Abuse, National Institutes of Health, Bethesda, MD 20892 USA
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Al-Attraqchi OH, Attimarad M, Venugopala KN, Nair A, Al-Attraqchi NH. Adenosine A2A Receptor as a Potential Drug Target - Current Status and Future Perspectives. Curr Pharm Des 2019; 25:2716-2740. [DOI: 10.2174/1381612825666190716113444] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2019] [Accepted: 07/03/2019] [Indexed: 12/18/2022]
Abstract
Adenosine receptors (ARs) are a class of G-protein coupled receptors (GPCRs) that are activated by
the endogenous substance adenosine. ARs are classified into 4 subtype receptors, namely, the A1, A2A, A2B and A3
receptors. The wide distribution and expression of the ARs in various body tissues as well as the roles they have
in controlling different functions in the body make them potential drug targets for the treatment of various pathological
conditions, such as cardiac diseases, cancer, Parkinson’s disease, inflammation and glaucoma. Therefore,
in the past decades, there have been extensive investigations of ARs with a high number of agonists and antagonists
identified that can interact with these receptors. This review shall discuss the A2A receptor (A2AAR) subtype
of the ARs. The structure, properties and the recent advances in the therapeutic potential of the receptor are discussed
with an overview of the recent advances in the methods of studying the receptor. Also, molecular modeling
approaches utilized in the design of A2AAR ligands are highlighted with various recent examples.
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Affiliation(s)
- Omar H.A. Al-Attraqchi
- Faculty of Pharmacy, Philadelphia University-Jordan, P.O BOX (1), Philadelphia University-19392, Amman, Jordan
| | - Mahesh Attimarad
- Department of Pharmaceutical Sciences, College of Clinical Pharmacy, King Faisal University, Al-Ahsa 31982, Saudi Arabia
| | - Katharigatta N. Venugopala
- Department of Pharmaceutical Sciences, College of Clinical Pharmacy, King Faisal University, Al-Ahsa 31982, Saudi Arabia
| | - Anroop Nair
- Department of Pharmaceutical Sciences, College of Clinical Pharmacy, King Faisal University, Al-Ahsa 31982, Saudi Arabia
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Exercise exerts an anxiolytic effect against repeated restraint stress through 5-HT 2A-mediated suppression of the adenosine A 2A receptor in the basolateral amygdala. Psychoneuroendocrinology 2019; 108:182-189. [PMID: 31248747 DOI: 10.1016/j.psyneuen.2019.06.005] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/13/2019] [Revised: 06/03/2019] [Accepted: 06/07/2019] [Indexed: 12/28/2022]
Abstract
Repeated or chronic stressful stimuli induce emotion- and mood-related abnormalities, such as anxiety and depression. Conversely, regular exercise exerts protective effects. Here, we found that exercise recovered anxiety-like behaviors, as measured using the open field and elevated plus maze tests in an anxiety mouse model. In addition to behavioral improvement, exercise enhanced the synaptic density of the 5-hydroxytryptamine 2A receptor (5-HT2AR), but not the 5-HT1AR in the basolateral amygdala (BLA) region in this mouse model. Furthermore, global treatment with a selective 5-HT2AR antagonist (MDL11930) generated an anxiety phenotype. Thus, synaptic recruitment of 5-HT2AR in BLA neurons may mediate the anxiolytic effects of exercise. The exercise regimen also reduced adenosine A2A receptor (A2AR)-mediated protein kinase A (PKA) activation, and the anxiolytic effect of the exercise was blunted by local activation of A2AR within the BLA using CGS21680, a selective A2AR agonist. Particularly, A2AR-mediated PKA activity was shown to be dependent on 5-HT2AR signaling in the BLA. These results imply that repeated stress upregulates A2AR-mediated adenosine signaling to facilitate PKA activation, whereas regular exercise inhibits A2AR function by increasing 5-HT2AR in the BLA. Accordingly, this integrated modulation of 5-HT and adenosine signaling, via 5-HT2AR and A2AR respectively, may be a mechanism underlying the anxiolytic effect of regular exercise.
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38
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Patocka J, Navratilova Z, Krejcar O, Kuca K. Coffee, Caffeine and Cognition: a Benefit or Disadvantage? LETT DRUG DES DISCOV 2019. [DOI: 10.2174/1570180816666190620142158] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Coffee, one of the world’s most consumed products, is extracted from the roasted seeds of
Coffea sp., a plant native to Africa. The effects of coffee on the human body have been recognized
for centuries and have now become the subject of systematic research. Caffeine’s impact on a
person’s cognitive ability was reviewed through a large set of literature related to the subject.
Learning and memory tasks are not typically influenced by caffeine when it comes to performance.
However, in some cases, it has been used to produce inhibitory or facilitatory effects on learning
and/or memory. Caffeine facilitates performance in tasks involving the working memory, but it has
been seen that tasks that rely on working memory may be hindered because of it. Moreover, caffeine
can augment the performance of memory during times where a person’s alertness is suboptimal at
best. However, a large body of research points to an improvement in reaction time. Consuming it has
little to no impact on long-term memory. Caffeine can be taken as a mild stimulant, proven by its
effect on performance in the context of subjects who are tired or fatigued. In some cases, it has been
observed that caffeine prevents cognitive decline, specifically when it comes to healthy subjects;
however, these results are heterogeneous at best. While drinking coffee positively influences both
physical and mental capacity, caffeine cannot and should not be viewed as an “absolute” enhancer of
cognitive function. Existing literature shows that the impact it causes on an individual is complex,
and can alter, for example, anxiety, performance and arousal.
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Affiliation(s)
- Jiri Patocka
- Faculty of Health and Social Studies,, University of South Bohemia Ceske Budejovice, Institute of Radiology, Toxicology and Civil Protection, Ceske Budejovice, Czech Republic
| | - Zdenka Navratilova
- Department of Botany, Faculty of Science, Charles University in Prague, Prague, Czech Republic
| | - Ondrej Krejcar
- University of Hradec Kralove, Hradec Kralove, Czech Republic
| | - Kamil Kuca
- Biomedical Research Centre, University Hospital, Hradec Kralove, Czech Republic
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Alia AO, Petrunich-Rutherford ML. Anxiety-like behavior and whole-body cortisol responses to components of energy drinks in zebrafish ( Danio rerio). PeerJ 2019; 7:e7546. [PMID: 31497403 PMCID: PMC6707341 DOI: 10.7717/peerj.7546] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2019] [Accepted: 07/25/2019] [Indexed: 12/02/2022] Open
Abstract
The current study investigated the independent and combined effects of caffeine and taurine on anxiety-like behavior and neuroendocrine responses in adult zebrafish (Danio rerio). Caffeine (1,3,7-trimethylpurine-2,6-dione), the world’s most commonly used psychoactive drug, acts as an adenosine receptor blocker and a mild central nervous system stimulant. However, excessive use of caffeine is associated with heightened anxiety levels. Taurine (2-aminoethanesulfonic acid), a semi-essential amino acid synthesized within the human brain, has been hypothesized to play a role in regulating anxiolytic behavior. Caffeine and taurine are two common additives in energy drinks and are often found in high concentrations in these beverages. However, few studies have investigated the interaction of these two chemicals with regards to anxiety measures. A suitable vertebrate to examine anxiety-like behavior and physiological stress responses is the zebrafish, which has shown promise due to substantial physiological and genetic homology with humans. Anxiety-like behavior in zebrafish can be determined by analyzing habituation to novelty when fish are placed into a novel tank and scototaxis (light avoidance) behavior in the light-dark test. Stress-related neuroendocrine responses can be measured in zebrafish by analyzing whole-body cortisol levels. The goal of this study was to determine if exposure to caffeine, taurine, or a combination of the two compounds altered anxiety-like behavior and whole-body cortisol levels in zebrafish relative to control. Zebrafish were individually exposed to either caffeine (100 mg/L), taurine (400 mg/L), or both for 15 min. Zebrafish in the control group were handled in the same manner but were only exposed to system tank water. After treatment, fish were transferred to the novel tank test or the light-dark test. Behavior was tracked for the first 6 min in the novel tank and 15 min in the light-tark test. Fifteen min after introduction to the behavioral task, fish were euthanized for the analysis of whole-body cortisol levels. The results demonstrate that caffeine treatment decreased the amount of exploration in the top of the novel tank and increased scototaxis behavior in the light-dark test, which supports the established anxiogenic effect of acute exposure to caffeine. Taurine alone did not alter basal levels of anxiety-like behavioral responses nor ameliorated the anxiogenic effects of caffeine on behavior when the two compounds were administered concurrently. None of the drug treatments altered basal levels of whole-body cortisol. The current results of this study suggest that, at least at this dose and time of exposure, taurine does not mitigate the anxiety-producing effects of caffeine when administered in combination, such as with energy drink consumption.
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Affiliation(s)
- Alia O Alia
- Department of Psychology, Indiana University Northwest, Gary, IN, USA
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40
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Calker D, Biber K, Domschke K, Serchov T. The role of adenosine receptors in mood and anxiety disorders. J Neurochem 2019; 151:11-27. [DOI: 10.1111/jnc.14841] [Citation(s) in RCA: 50] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2019] [Revised: 07/15/2019] [Accepted: 07/18/2019] [Indexed: 12/25/2022]
Affiliation(s)
- Dietrich Calker
- Department for Psychiatry and Psychotherapy, Medical Center ‐ University of Freiburg, Faculty of Medicine University of Freiburg Freiburg Germany
| | - Knut Biber
- Section Medical Physiology, Department of Neuroscience University Medical Center Groningen, University of Groningen Groningen The Netherlands
| | - Katharina Domschke
- Department for Psychiatry and Psychotherapy, Medical Center ‐ University of Freiburg, Faculty of Medicine University of Freiburg Freiburg Germany
- Centre for Basics in Neuromodulation, Faculty of Medicine University of Freiburg Freiburg Germany
| | - Tsvetan Serchov
- Department of Stereotactic and Functional Neurosurgery, Faculty of Medicine, Medical Center ‐ University Freiburg University of Freiburg Freiburg Germany
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41
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Adenosine A2A receptor as potential therapeutic target in neuropsychiatric disorders. Pharmacol Res 2019; 147:104338. [DOI: 10.1016/j.phrs.2019.104338] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/01/2019] [Revised: 06/26/2019] [Accepted: 07/01/2019] [Indexed: 01/20/2023]
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42
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Reis SL, Silva HB, Almeida M, Cunha RA, Simões AP, Canas PM. Adenosine A
1
and A
2A
receptors differently control synaptic plasticity in the mouse dorsal and ventral hippocampus. J Neurochem 2019; 151:227-237. [DOI: 10.1111/jnc.14816] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2019] [Revised: 06/18/2019] [Accepted: 06/25/2019] [Indexed: 12/20/2022]
Affiliation(s)
- Sara L. Reis
- CNC‐Center for Neuroscience and Cell Biology Coimbra Portugal
- Faculty of Medicine University of Coimbra Coimbra Portugal
| | | | | | - Rodrigo A. Cunha
- CNC‐Center for Neuroscience and Cell Biology Coimbra Portugal
- Faculty of Medicine University of Coimbra Coimbra Portugal
| | - Ana P. Simões
- CNC‐Center for Neuroscience and Cell Biology Coimbra Portugal
| | - Paula M. Canas
- CNC‐Center for Neuroscience and Cell Biology Coimbra Portugal
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Agomelatine and tianeptine antidepressant activity in mice behavioral despair tests is enhanced by DMPX, a selective adenosine A 2A receptor antagonist, but not DPCPX, a selective adenosine A 1 receptor antagonist. Pharmacol Rep 2019; 71:676-681. [PMID: 31200233 DOI: 10.1016/j.pharep.2019.03.007] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2018] [Revised: 02/12/2019] [Accepted: 03/11/2019] [Indexed: 01/13/2023]
Abstract
BACKGROUND Adenosine, an endogenous nucleoside, modulates the release of monoamines, e.g., noradrenaline, serotonin, and dopamine in the brain. Both nonselective and selective stimulation of adenosine receptors produce symptoms of depression in some animal models. Therefore, the main objective of our study was to assess the influence of a selective adenosine A1 receptor antagonist (DPCPX) and a selective adenosine A2A receptor antagonist (DMPX) on the activity of agomelatine and tianeptine. METHODS The forced swim test (FST) and tail suspension test (TST) were performed to assess the effects of DPCPX and DMPX on the antidepressant-like activity of agomelatine and tianeptine. Drug serum and brain levels were analyzed using HPLC. RESULTS Co-administration of agomelatine (20 mg/kg) or tianeptine (15 mg/kg) with DMPX (3 mg/kg), but not with DPCPX (1 mg/kg), significantly reduced the immobility time both in the FST and TST in mice. These effects were not associated with an enhancement in animals' spontaneous locomotor activity. The observed changes in the mouse behavior after concomitant injection of DMPX and the tested antidepressant agents were associated with elevated brain concentration of agomelatine and tianeptine. CONCLUSION Our study shows a synergistic action of the selective A2A receptor antagonist and the studied antidepressant drugs, and a lack of such interaction in the case of the selective A1 receptor antagonist. The interaction between DMPX and agomelatine/tianeptine at least partly occurs in the pharmacokinetic phase. A combination of a selective A2A receptor antagonist and an antidepressant may be a new strategy for treating depression.
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Physical exercise prevents memory impairment in an animal model of hypertension through modulation of CD39 and CD73 activities and A2A receptor expression. J Hypertens 2019; 37:135-143. [DOI: 10.1097/hjh.0000000000001845] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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45
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Leffa DT, Pandolfo P, Gonçalves N, Machado NJ, de Souza CM, Real JI, Silva AC, Silva HB, Köfalvi A, Cunha RA, Ferreira SG. Adenosine A 2A Receptors in the Rat Prelimbic Medial Prefrontal Cortex Control Delay-Based Cost-Benefit Decision Making. Front Mol Neurosci 2018; 11:475. [PMID: 30618621 PMCID: PMC6306464 DOI: 10.3389/fnmol.2018.00475] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2018] [Accepted: 12/05/2018] [Indexed: 12/23/2022] Open
Abstract
Adenosine A2A receptors (A2ARs) were recently described to control synaptic plasticity and network activity in the prefrontal cortex (PFC). We now probed the role of these PFC A2AR by evaluating the behavioral performance (locomotor activity, anxiety-related behavior, cost-benefit decision making and working memory) of rats upon downregulation of A2AR selectively in the prelimbic medial PFC (PLmPFC) via viral small hairpin RNA targeting the A2AR (shA2AR). The most evident alteration observed in shA2AR-treated rats, when compared to sh-control (shCTRL)-treated rats, was a decrease in the choice of the large reward upon an imposed delay of 15 s assessed in a T-maze-based cost-benefit decision-making paradigm, suggestive of impulsive decision making. Spontaneous locomotion in the open field was not altered, suggesting no changes in exploratory behavior. Furthermore, rats treated with shA2AR in the PLmPFC also displayed a tendency for higher anxiety levels in the elevated plus maze (less entries in the open arms), but not in the open field test (time spent in the center was not affected). Finally, working memory performance was not significantly altered, as revealed by the spontaneous alternation in the Y-maze test and the latency to reach the platform in the repeated trial Morris water maze. These findings constitute the first direct demonstration of a role of PFC A2AR in the control of behavior in physiological conditions, showing their major contribution for the control of delay-based cost-benefit decisions.
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Affiliation(s)
- Douglas T Leffa
- CNC-Center for Neuroscience and Cell Biology, University of Coimbra, Coimbra, Portugal.,Department of Biochemistry, Federal University of Rio Grande do Sul, Porto Alegre, Brazil
| | - Pablo Pandolfo
- Department of Biochemistry, Federal University of Rio Grande do Sul, Porto Alegre, Brazil.,Department of Neurobiology, Fluminense Federal University, Niterói, Brazil
| | - Nélio Gonçalves
- CNC-Center for Neuroscience and Cell Biology, University of Coimbra, Coimbra, Portugal
| | - Nuno J Machado
- CNC-Center for Neuroscience and Cell Biology, University of Coimbra, Coimbra, Portugal
| | - Carolina M de Souza
- CNC-Center for Neuroscience and Cell Biology, University of Coimbra, Coimbra, Portugal.,Post-Graduate Program in Medical Sciences, Faculty of Medicine, Federal University of Ceará, Fortaleza, Brazil
| | - Joana I Real
- CNC-Center for Neuroscience and Cell Biology, University of Coimbra, Coimbra, Portugal
| | - António C Silva
- CNC-Center for Neuroscience and Cell Biology, University of Coimbra, Coimbra, Portugal
| | - Henrique B Silva
- CNC-Center for Neuroscience and Cell Biology, University of Coimbra, Coimbra, Portugal
| | - Attila Köfalvi
- CNC-Center for Neuroscience and Cell Biology, University of Coimbra, Coimbra, Portugal
| | - Rodrigo A Cunha
- CNC-Center for Neuroscience and Cell Biology, University of Coimbra, Coimbra, Portugal.,Faculty of Medicine, University of Coimbra, Coimbra, Portugal
| | - Samira G Ferreira
- CNC-Center for Neuroscience and Cell Biology, University of Coimbra, Coimbra, Portugal
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46
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Borea PA, Gessi S, Merighi S, Vincenzi F, Varani K. Pharmacology of Adenosine Receptors: The State of the Art. Physiol Rev 2018; 98:1591-1625. [PMID: 29848236 DOI: 10.1152/physrev.00049.2017] [Citation(s) in RCA: 475] [Impact Index Per Article: 79.2] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Adenosine is a ubiquitous endogenous autacoid whose effects are triggered through the enrollment of four G protein-coupled receptors: A1, A2A, A2B, and A3. Due to the rapid generation of adenosine from cellular metabolism, and the widespread distribution of its receptor subtypes in almost all organs and tissues, this nucleoside induces a multitude of physiopathological effects, regulating central nervous, cardiovascular, peripheral, and immune systems. It is becoming clear that the expression patterns of adenosine receptors vary among cell types, lending weight to the idea that they may be both markers of pathologies and useful targets for novel drugs. This review offers an overview of current knowledge on adenosine receptors, including their characteristic structural features, molecular interactions and cellular functions, as well as their essential roles in pain, cancer, and neurodegenerative, inflammatory, and autoimmune diseases. Finally, we highlight the latest findings on molecules capable of targeting adenosine receptors and report which stage of drug development they have reached.
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Affiliation(s)
- Pier Andrea Borea
- Department of Medical Sciences, University of Ferrara , Ferrara , Italy
| | - Stefania Gessi
- Department of Medical Sciences, University of Ferrara , Ferrara , Italy
| | - Stefania Merighi
- Department of Medical Sciences, University of Ferrara , Ferrara , Italy
| | - Fabrizio Vincenzi
- Department of Medical Sciences, University of Ferrara , Ferrara , Italy
| | - Katia Varani
- Department of Medical Sciences, University of Ferrara , Ferrara , Italy
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47
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Poleszak E, Szopa A, Bogatko K, Wyska E, Wośko S, Świąder K, Doboszewska U, Wlaź A, Wróbel A, Wlaź P, Serefko A. Antidepressant-Like Activity of Typical Antidepressant Drugs in the Forced Swim Test and Tail Suspension Test in Mice Is Augmented by DMPX, an Adenosine A 2A Receptor Antagonist. Neurotox Res 2018; 35:344-352. [PMID: 30267268 PMCID: PMC6331646 DOI: 10.1007/s12640-018-9959-2] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2018] [Revised: 08/31/2018] [Accepted: 09/11/2018] [Indexed: 01/06/2023]
Abstract
Unsatisfactory therapeutic effects of currently used antidepressants force to search for new pharmacological treatment strategies. Recent research points to the relationship between depressive disorders and the adenosinergic system. Therefore, the main goal of our studies was to evaluate the effects of DMPX (3 mg/kg, i.p.), which possesses selectivity for adenosine A2A receptors versus A1 receptors, on the activity of imipramine (15 mg/kg, i.p.), escitalopram (2.5 mg/kg, i.p.), and reboxetine (2 mg/kg, i.p.) given in subtherapeutic doses. The studies carried out using the forced swim and tail suspension tests in mice showed that DMPX at a dose of 6 and 12 mg/kg exerts antidepressant-like effect and does not affect the locomotor activity. Co-administration of DMPX at a dose of 3 mg/kg with the studied antidepressant drugs caused the reduction of immobility time in both behavioral tests. The observed effect was not associated with an increase in the locomotor activity. To evaluate whether the observed effects were due to a pharmacokinetic/pharmacodynamic interaction, the levels of the antidepressants in blood and brain were measured using high-performance liquid chromatography. It can be assumed that the interaction between DMPX and imipramine was exclusively pharmacodynamic in nature, whereas an increased antidepressant activity of escitalopram and reboxetine was at least partly related to its pharmacokinetic interaction with DMPX.
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Affiliation(s)
- Ewa Poleszak
- Department of Applied Pharmacy, Medical University of Lublin, Chodźki 1, PL 20-093, Lublin, Poland.
| | - Aleksandra Szopa
- Department of Applied Pharmacy, Medical University of Lublin, Chodźki 1, PL 20-093, Lublin, Poland.
| | - Karolina Bogatko
- Department of Applied Pharmacy, Medical University of Lublin, Chodźki 1, PL 20-093, Lublin, Poland
| | - Elżbieta Wyska
- Department of Pharmacokinetics and Physical Pharmacy, Collegium Medicum, Jagiellonian University, Medyczna 9, PL 30-688, Kraków, Poland
| | - Sylwia Wośko
- Department of Applied Pharmacy, Medical University of Lublin, Chodźki 1, PL 20-093, Lublin, Poland
| | - Katarzyna Świąder
- Department of Applied Pharmacy, Medical University of Lublin, Chodźki 1, PL 20-093, Lublin, Poland
| | - Urszula Doboszewska
- Department of Animal Physiology, Institute of Biology and Biochemistry, Faculty of Biology and Biotechnology, Maria Curie-Skłodowska University, Akademicka 19, PL 20-033, Lublin, Poland
| | - Aleksandra Wlaź
- Department of Pathophysiology, Medical University of Lublin, Jaczewskiego 8, PL 20-090, Lublin, Poland
| | - Andrzej Wróbel
- Second Department of Gynecology, Medical University of Lublin, Jaczewskiego 8, PL 20-090, Lublin, Poland
| | - Piotr Wlaź
- Department of Animal Physiology, Institute of Biology and Biochemistry, Faculty of Biology and Biotechnology, Maria Curie-Skłodowska University, Akademicka 19, PL 20-033, Lublin, Poland
| | - Anna Serefko
- Department of Applied Pharmacy, Medical University of Lublin, Chodźki 1, PL 20-093, Lublin, Poland
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Sundin EM, Ciubuc JD, Bennet KE, Ochoa K, Manciu FS. Comparative Computational and Experimental Detection of Adenosine Using Ultrasensitive Surface-Enhanced Raman Spectroscopy. SENSORS (BASEL, SWITZERLAND) 2018; 18:E2696. [PMID: 30115871 PMCID: PMC6111885 DOI: 10.3390/s18082696] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/26/2018] [Revised: 08/11/2018] [Accepted: 08/14/2018] [Indexed: 01/30/2023]
Abstract
To better understand detection and monitoring of the important neurotransmitter adenosine at physiological levels, this study combines quantum chemical density functional modeling and ultrasensitive surface-enhanced Raman spectroscopic (SERS) measurements. Combined simulation results and experimental data for an analyte concentration of about 10-11 molar indicate the presence of all known molecular forms resulting from adenosine's complex redox-reaction. Detailed analysis presented here, besides assessing potential Raman signatures of these adenosinic forms, also sheds light on the analytic redox process and voltammetric detection. Examples of adenosine Raman fingerprints for different molecular orientations with respect to the SERS substrate are the vibrational line around 920 ± 10 cm-1 for analyte physisorption through the carbinol moiety and around 1600 ± 20 cm-1 for its fully oxidized form. However, both hydroxyl/oxygen sites and NH₂/nitrogen sites contribute to molecule's interaction with the SERS environment. Our results also reveal that contributions of partially oxidized adenosine forms and of the standard form are more likely to be detected with the first recorded voltammetric oxidation peak. The fully oxidized adenosine form contributes mostly to the second peak. Thus, this comparative theoretical⁻experimental investigation of adenosine's vibrational signatures provides significant insights for advancing its detection, and for future development of opto-voltammetric biosensors.
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Affiliation(s)
- Emma M Sundin
- Department of Physics, University of Texas at El Paso, El Paso, TX 79968, USA.
- Department of Biomedical Engineering, University of Texas at El Paso, El Paso, TX 79968, USA.
| | - John D Ciubuc
- Department of Physics, University of Texas at El Paso, El Paso, TX 79968, USA.
- Department of Biomedical Engineering, University of Texas at El Paso, El Paso, TX 79968, USA.
| | - Kevin E Bennet
- Division of Engineering, Department of Neurologic Surgery, Mayo Clinic, Rochester, MN 55905, USA.
| | - Katia Ochoa
- Department of Physics, University of Texas at El Paso, El Paso, TX 79968, USA.
| | - Felicia S Manciu
- Department of Physics, University of Texas at El Paso, El Paso, TX 79968, USA.
- Department of Biomedical Engineering, University of Texas at El Paso, El Paso, TX 79968, USA.
- Border Biomedical Research Center, University of Texas at El Paso, El Paso, TX 79968, USA.
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49
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Szopa A, Poleszak E, Bogatko K, Wyska E, Wośko S, Doboszewska U, Świąder K, Wlaź A, Dudka J, Wróbel A, Wlaź P, Serefko A. DPCPX, a selective adenosine A1 receptor antagonist, enhances the antidepressant-like effects of imipramine, escitalopram, and reboxetine in mice behavioral tests. Naunyn Schmiedebergs Arch Pharmacol 2018; 391:1361-1371. [PMID: 30094458 PMCID: PMC6208968 DOI: 10.1007/s00210-018-1551-z] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2018] [Accepted: 07/27/2018] [Indexed: 12/13/2022]
Abstract
The main goal of the present study was to evaluate the influence of the adenosine A1 receptor (A1R) antagonist — DPCPX — on depressive-like behavior in mice, as well as the effect of DPCPX on the activity of imipramine, escitalopram, and reboxetine, each at non-effective doses. The influence of DPCPX on behavior and its influence on the activity of selected antidepressants was evaluated in the forced swim test (FST) and the tail suspension test (TST) in mice. Locomotor activity was measured to verify and exclude false-positive data obtained in the FST and TST. Moreover, serum and brain concentrations of tested antidepressants were determined using HPLC. DPCPX, at doses of 2 and 4 mg/kg, exhibited antidepressant activity in the FST and TST, which was not related to changes in the spontaneous locomotor activity. Co-administration of DPCPX with imipramine, escitalopram, or reboxetine, each at non-active doses, significantly reduced the immobilization period in the FST and TST in mice, which was not due to the increase in locomotor activity. Both antagonists of 5-HT receptors (WAY 100635 and ritanserin) completely antagonized the effect elicited by DPCPX in the behavioral tests. Results of assessment of the nature of the interaction between DPCPX and test drugs show that in the case of DPCPX and imipramine or reboxetine, there were pharmacodynamic interactions, whereas the DPCPX-escitalopram interaction is at least partially pharmacokinetic in nature. Presented outcomes indicate that an inhibition of A1Rs and an increase of monoaminergic transduction in the CNS may offer a novel strategy for the development of antidepressant drugs.
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Affiliation(s)
- Aleksandra Szopa
- Department of Applied Pharmacy, Medical University of Lublin, Chodźki 1, 20-093, Lublin, Poland.
| | - Ewa Poleszak
- Department of Applied Pharmacy, Medical University of Lublin, Chodźki 1, 20-093, Lublin, Poland.
| | - Karolina Bogatko
- Department of Applied Pharmacy, Medical University of Lublin, Chodźki 1, 20-093, Lublin, Poland
| | - Elżbieta Wyska
- Department of Pharmacokinetics and Physical Pharmacy, Collegium Medicum, Jagiellonian University, Medyczna 9, 30-688, Kraków, Poland
| | - Sylwia Wośko
- Department of Applied Pharmacy, Medical University of Lublin, Chodźki 1, 20-093, Lublin, Poland
| | - Urszula Doboszewska
- Department of Animal Physiology, Institute of Biology and Biochemistry, Faculty of Biology and Biotechnology, Maria Curie-Skłodowska University, Akademicka 19, 20-033, Lublin, Poland
| | - Katarzyna Świąder
- Department of Applied Pharmacy, Medical University of Lublin, Chodźki 1, 20-093, Lublin, Poland
| | - Aleksandra Wlaź
- Department of Pathophysiology, Medical University of Lublin, Jaczewskiego 8, 20-090, Lublin, Poland
| | - Jarosław Dudka
- Chair and Department of Toxicology, Medical University of Lublin, Chodźki 8, 20-093, Lublin, Poland
| | - Andrzej Wróbel
- Second Department of Gynecology, Medical University of Lublin, Jaczewskiego 8, 20-090, Lublin, Poland
| | - Piotr Wlaź
- Department of Animal Physiology, Institute of Biology and Biochemistry, Faculty of Biology and Biotechnology, Maria Curie-Skłodowska University, Akademicka 19, 20-033, Lublin, Poland
| | - Anna Serefko
- Department of Applied Pharmacy, Medical University of Lublin, Chodźki 1, 20-093, Lublin, Poland
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Hughes RN, Hamilton JJ. Sex-dependent modification by chronic caffeine of acute methamphetamine effects on anxiety-related behavior in rats. Behav Brain Res 2018; 345:30-38. [PMID: 29476897 DOI: 10.1016/j.bbr.2018.02.013] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2017] [Revised: 01/15/2018] [Accepted: 02/09/2018] [Indexed: 01/04/2023]
Abstract
For fourteen days, male and female PVG/c hooded rats were provided continuously with either pure drinking water, or water containing caffeine in a quantity approximating a daily dose of 31.1 mg/kg. Then at intervals of 3 days, they were administered 1, 2 mg/kg methamphetamine (MA) or saline before being tested for anxiety-related behavior in a zero maze or a light/dark box, or their short-term spatial memory was assessed in a Y maze following introduction of a novel brightness change in one of the arms. Each rat experienced each type of apparatus with the same acute MA or saline treatment while still exposed to chronic caffeine or pure drinking water. While chronic caffeine on its own did not affect any behavioral measure, acute MA was anxiolytic for male rats suggested by increased entries and occupancy of zero-maze enclosed areas, and decreased emergence latencies and increased entries into the light/dark-box light compartment. Females were less affected than males by MA in both types of apparatus unless they also consumed caffeine. For male rats, choices of the Y-maze novel arm were affected by neither caffeine nor MA, but for females provided with unadulterated water, such choices were reduced by 1 mg/kg MA but increased for those exposed to caffeine, thereby suggesting either impaired or improved memory respectively. However, changes in anxiety could also explain these results. Overall, results generated in the three types of apparatus supported potentiation by caffeine of any effects of MA on anxiety for females only.
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Affiliation(s)
- Robert N Hughes
- Department of Psychology, University of Canterbury, Christchurch, 8140, New Zealand.
| | - Jennifer J Hamilton
- Department of Psychology, University of Canterbury, Christchurch, 8140, New Zealand
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