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Hjell G, Rokicki J, Szabo A, Holst R, Tesli N, Bell C, Fischer-Vieler T, Werner MCF, Lunding SH, Ormerod MBEG, Johansen IT, Djurovic S, Ueland T, Andreassen OA, Melle I, Lagerberg TV, Mørch-Johnsen L, Steen NE, Haukvik UK. Impulsivity across severe mental disorders: a cross-sectional study of immune markers and psychopharmacotherapy. BMC Psychiatry 2023; 23:659. [PMID: 37674162 PMCID: PMC10483855 DOI: 10.1186/s12888-023-05154-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/22/2023] [Accepted: 08/29/2023] [Indexed: 09/08/2023] Open
Abstract
BACKGROUND Impulsivity is a transdiagnostic feature linked to severe clinical expression and a potential target for psychopharmacological strategies. Biological underpinnings are largely unknown, but involvement of immune dysregulation has been indicated, and the effects of psychopharmacological agents vary. We investigated if impulsivity was associated with circulating immune marker levels and with a range of psychopharmacological treatment regimens in severe mental disorders. METHODS Impulsivity was assessed in a sample (N = 657) of patients with schizophrenia or schizophreniform disorder (SCZ) (N = 116) or bipolar disorder (BD) (N = 159) and healthy participants (N = 382) using the Barratt Impulsiveness Scale (BIS-11) questionnaire. Plasma levels of systemic immune markers (RANTES, IL-1RA, IL-18, IL-18BP, sTNFR-1) were measured by enzyme immunoassays. Patients underwent thorough clinical assessment, including evaluation of psychotropic medication. Associations were assessed using linear regressions. RESULTS Impulsivity was positively associated with SCZ (p < 0.001) and BD (p < 0.001) diagnosis and negatively associated with age (p < 0.05), but not significantly associated with any of the circulating immune markers independently of diagnostic status. Among patients, impulsivity was negatively associated with lithium treatment (p = 0.003) and positively associated with antidepressant treatment (p = 0.011) after controlling for diagnosis, psychotropic co-medications, manic symptoms, and depressive symptoms. CONCLUSIONS We report elevated impulsivity across SCZ and BD but no associations to systemic immune dysregulation based on the current immune marker selection. The present study reveals associations between impulsivity in severe mental disorders and treatment with lithium and antidepressants, with opposite directions. Future studies are warranted to determine the causal directionality of the observed associations with psychopharmacotherapy.
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Affiliation(s)
- Gabriela Hjell
- NORMENT, Division of Mental Health and Addiction, Oslo University Hospital & Institute of Clinical Medicine, University of Oslo, Oslo, Norway.
- Department of Psychiatry & Department of Clinical Research, Østfold Hospital, Grålum, Norway.
| | - Jaroslav Rokicki
- NORMENT, Division of Mental Health and Addiction, Oslo University Hospital & Institute of Clinical Medicine, University of Oslo, Oslo, Norway
- Centre of Research and Education in Forensic Psychiatry, Oslo University Hospital, Oslo, Norway
| | - Attila Szabo
- NORMENT, Division of Mental Health and Addiction, Oslo University Hospital & Institute of Clinical Medicine, University of Oslo, Oslo, Norway
- K.G. Jebsen Center of Neurodevelopmental Disorders, University of Oslo, Oslo, Norway
| | - René Holst
- Department of Psychiatry & Department of Clinical Research, Østfold Hospital, Grålum, Norway
- Department of Biostatistics, Institute of Basic Medical Sciences, University of Oslo, Oslo, Norway
| | - Natalia Tesli
- NORMENT, Division of Mental Health and Addiction, Oslo University Hospital & Institute of Clinical Medicine, University of Oslo, Oslo, Norway
| | - Christina Bell
- NORMENT, Division of Mental Health and Addiction, Oslo University Hospital & Institute of Clinical Medicine, University of Oslo, Oslo, Norway
| | - Thomas Fischer-Vieler
- NORMENT, Division of Mental Health and Addiction, Oslo University Hospital & Institute of Clinical Medicine, University of Oslo, Oslo, Norway
| | - Maren Caroline Frogner Werner
- NORMENT, Division of Mental Health and Addiction, Oslo University Hospital & Institute of Clinical Medicine, University of Oslo, Oslo, Norway
| | - Synve Hoffart Lunding
- NORMENT, Division of Mental Health and Addiction, Oslo University Hospital & Institute of Clinical Medicine, University of Oslo, Oslo, Norway
| | | | - Ingrid Torp Johansen
- NORMENT, Division of Mental Health and Addiction, Oslo University Hospital & Institute of Clinical Medicine, University of Oslo, Oslo, Norway
| | - Srdjan Djurovic
- Department of Medical Genetics, Oslo University Hospital, Oslo, Norway
- NORMENT, Department of Clinical Science, University of Bergen, Bergen, Norway
| | - Thor Ueland
- Institute of Clinical Medicine, University of Oslo, Oslo, Norway
- Research Institute of Internal Medicine, Oslo University Hospital, Oslo, Norway
- K.G. Jebsen Thrombosis Research and Expertise Center, University of Tromsø, Tromsø, Norway
| | - Ole Andreas Andreassen
- NORMENT, Division of Mental Health and Addiction, Oslo University Hospital & Institute of Clinical Medicine, University of Oslo, Oslo, Norway
| | - Ingrid Melle
- NORMENT, Division of Mental Health and Addiction, Oslo University Hospital & Institute of Clinical Medicine, University of Oslo, Oslo, Norway
| | - Trine Vik Lagerberg
- NORMENT, Division of Mental Health and Addiction, Oslo University Hospital & Institute of Clinical Medicine, University of Oslo, Oslo, Norway
| | - Lynn Mørch-Johnsen
- NORMENT, Division of Mental Health and Addiction, Oslo University Hospital & Institute of Clinical Medicine, University of Oslo, Oslo, Norway
- Department of Psychiatry & Department of Clinical Research, Østfold Hospital, Grålum, Norway
| | - Nils Eiel Steen
- NORMENT, Division of Mental Health and Addiction, Oslo University Hospital & Institute of Clinical Medicine, University of Oslo, Oslo, Norway
| | - Unn Kristin Haukvik
- NORMENT, Division of Mental Health and Addiction, Oslo University Hospital & Institute of Clinical Medicine, University of Oslo, Oslo, Norway
- Centre of Research and Education in Forensic Psychiatry, Oslo University Hospital, Oslo, Norway
- Department of Adult Psychiatry, Institute of Clinical Medicine, University of Oslo, Oslo, Norway
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2
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Zuo C, Zhuang Z, Yang P, Zhang H, Li X, Huang T, Ahluwalia TS. Dissecting the causal association between inflammation and post-traumatic stress disorder: A bidirectional Mendelian randomization study. J Affect Disord 2023; 333:436-445. [PMID: 37086801 DOI: 10.1016/j.jad.2023.04.080] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/29/2022] [Revised: 04/14/2023] [Accepted: 04/17/2023] [Indexed: 04/24/2023]
Abstract
BACKGROUND Accumulating evidence showed a bidirectional association between post-traumatic stress disorder and inflammation. However, whether the association is causal remains unclear. We aimed to evaluate the causal relationships between inflammatory cytokines and post-traumatic stress disorder using two-sample bi-directional Mendelian randomization analysis. METHODS Single nucleotide polymorphism from genome-wide association studies of inflammatory cytokines, C-reactive protein, and post-traumatic stress disorder (23,212 patients and 151,447 controls) was selected as instrumental variables. The causal associations were estimated by inverse variance weighting with sensitivity analyses using weighted median, MR-Egger, and MR-PRESSO methods. RESULTS We observed suggestive associations of genetically predicted interleukin-17 (IL-17) and RANTES with post-traumatic stress disorder. One standard deviation (SD) increase in genetically predicted level of IL-17 lowered the risk of post-traumatic stress disorder with an odds ratio (OR) of 0.902 (95 % CI = 0.828, 0.984, P = 0.02). One SD higher genetically predicted RANTES (CCL5) concentration increased post-traumatic stress disorder risk (OR = 1.067, 95 % CI = 1.005, 1.133, P = 0.032). However, we found no evidence of causal associations of post-traumatic stress disorder with the selected inflammatory cytokines and biomarkers. We observed no evidence supporting the presence of pleiotropy. The results of sensitivity analyses demonstrated the same directions and similar effect sizes as the primary findings. LIMITATIONS Potential pleiotropy, possible weak instruments, and low statistical power limited our findings. CONCLUSION Inflammation was suggestively causally associated with the risk of post-traumatic stress disorder, and inflammatory cytokines had no downstream effect on post-traumatic stress disorder. Further studies are needed to explain the mechanisms of systemic inflammation and neuroinflammation in post-traumatic stress disorder.
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Affiliation(s)
- Chuanlong Zuo
- School of Nursing, Peking University, Beijing 100191, China.
| | - Zhenhuang Zhuang
- Department of Epidemiology & Biostatistics, School of Public Health, Peking University, 100191 Beijing, China.
| | - Ping Yang
- School of Nursing, Peking University, Beijing 100191, China.
| | - Hua Zhang
- Research Center of Clinical Epidemiology, Peking University Third Hospital, 100191 Beijing, China
| | - Xiangping Li
- School of Nursing, Peking University, Beijing 100191, China.
| | - Tao Huang
- Department of Epidemiology & Biostatistics, School of Public Health, Peking University, 100191 Beijing, China; Key Laboratory of Molecular Cardiovascular Sciences (Peking University), Ministry of Education, 100191 Beijing, China; Center for Intelligent Public Health, Academy for Artificial Intelligence, Peking University, 100191 Beijing, China.
| | - Tarunveer S Ahluwalia
- Steno Diabetes Center Copenhagen, Gentofte DK2820, Denmark; Department of Biology, The Bioinformatics Center, University of Copenhagen, Copenhagen DK2200, Denmark.
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3
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Li J, Tong L, Schock BC, Ji LL. Post-traumatic Stress Disorder: Focus on Neuroinflammation. Mol Neurobiol 2023; 60:3963-3978. [PMID: 37004607 DOI: 10.1007/s12035-023-03320-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2022] [Accepted: 03/09/2023] [Indexed: 04/04/2023]
Abstract
Post-traumatic stress disorder (PTSD), gaining increasing attention, is a multifaceted psychiatric disorder that occurs following a stressful or traumatic event or series of events. Recently, several studies showed a close relationship between PTSD and neuroinflammation. Neuroinflammation, a defense response of the nervous system, is associated with the activation of neuroimmune cells such as microglia and astrocytes and with changes in inflammatory markers. In this review, we first analyzed the relationship between neuroinflammation and PTSD: the effect of stress-derived activation of the hypothalamic-pituitary-adrenal (HPA) axis on the main immune cells in the brain and the effect of stimulated immune cells in the brain on the HPA axis. We then summarize the alteration of inflammatory markers in brain regions related to PTSD. Astrocytes are neural parenchymal cells that protect neurons by regulating the ionic microenvironment around neurons. Microglia are macrophages of the brain that coordinate the immunological response. Recent studies on these two cell types provided new insight into neuroinflammation in PTSD. These contribute to promoting comprehension of neuroinflammation, which plays a pivotal role in the pathogenesis of PTSD.
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Affiliation(s)
- Jimeng Li
- Department of 2nd Clinical College, China Medical University, Shenyang, Liaoning, China
| | - Lei Tong
- Department of Anatomy, College of Basic Sciences, China Medical University, Shenyang, Liaoning, China
| | - Bettina C Schock
- The Wellcome-Wolfson Institute for Experimental Medicine, Queen's University Belfast Faculty of Medicine Health and Life Sciences, Belfast, UK
| | - Li-Li Ji
- Department of Anatomy, College of Basic Sciences, China Medical University, Shenyang, Liaoning, China.
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4
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Sun K, Xie R, Yi Z, Yin L, Guan Y, Wang L, Wang Y, Ding X, Luan Y, Liu H, Fan Y. Amentoflavone impairs the reconsolidated fear memories through inhibition of ERK pathway. Biochem Biophys Res Commun 2022; 622:8-14. [PMID: 35841770 DOI: 10.1016/j.bbrc.2022.07.024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2022] [Revised: 06/25/2022] [Accepted: 07/07/2022] [Indexed: 11/02/2022]
Abstract
Post-traumatic stress disorder (PTSD) is a pathological fear memory-related disease. The persistence of pathological fearful memories is one of the most characteristic symptoms of PTSD. However, this can be eliminated by intervening in reconsolidation. Inflammation is intimately involved in the pathophysiologic progression of PTSD. Amentoflavone (AF) has anti-inflammatory effects. However, the effect of AF on fear memory reconsolidation remains unclear. In the present series of experiments, the CFC paradigm of rats were constructed. This was followed by AF administration immediately after exposure to the conditioning chamber to observe the maintenance of fear memory. Finally, a Western blot for the amygdala was used to explore the possible molecular biological mechanisms of AF affecting animal behavior. The findings suggest that re-exposure to the conditioning chamber for retrieval of CFC memory followed by immediate intragastric AF administration in rats attenuated the fear response for at least 14 days. In addition, the Western blot results show that the CFC memory intervention effect of AF administration during the reconsolidation phase may be related to the ERK signaling pathway inhibition. In general, the administration of AF in the reconsolidation phase to inhibit neuroinflammation can block the reconsolidation process and disrupt fear memory retention in the long term, at least in part through ERK pathway.
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Affiliation(s)
- Kuisheng Sun
- School of Laboratory Medicine, Weifang Medical University, Weifang, Shandong, China.
| | - Ruizhu Xie
- Affiliated Hospital of Weifang Medical University, Weifang, Shandong, China
| | - Zhengjun Yi
- School of Laboratory Medicine, Weifang Medical University, Weifang, Shandong, China
| | - Liqian Yin
- School of Laboratory Medicine, Weifang Medical University, Weifang, Shandong, China
| | - Yan Guan
- School of Laboratory Medicine, Weifang Medical University, Weifang, Shandong, China
| | - Lujuan Wang
- School of Laboratory Medicine, Weifang Medical University, Weifang, Shandong, China
| | - Ying Wang
- School of Laboratory Medicine, Weifang Medical University, Weifang, Shandong, China
| | - Xiaoyan Ding
- School of Laboratory Medicine, Weifang Medical University, Weifang, Shandong, China
| | - Yaning Luan
- School of Clinical Medicine, Weifang Medical University, Weifang, Shandong, China
| | - Huijie Liu
- School of Laboratory Medicine, Weifang Medical University, Weifang, Shandong, China
| | - Yuhan Fan
- School of Public Health, Weifang Medical University, Weifang, Shandong, China
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Chen KR, Wang HY, Liao YH, Sun LH, Huang YH, Yu L, Kuo PL. Effects of Septin-14 Gene Deletion on Adult Cognitive/Emotional Behavior. Front Mol Neurosci 2022; 15:880858. [PMID: 35571367 PMCID: PMC9100402 DOI: 10.3389/fnmol.2022.880858] [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: 02/22/2022] [Accepted: 03/29/2022] [Indexed: 11/16/2022] Open
Abstract
While various septin GTPases have been reported for their physiological functions, their roles in orchestrating complex cognitive/emotional functions in adult mammals remained scarcely explored. A comprehensive behavioral test battery was administered to two sexes of 12-week-old Septin-14 (SEPT14) knockout (KO) and wild-type (WT) mice. The sexually dimorphic effects of brain SEPT14 KO on inhibitory avoidance (IA) and hippocampal mGluR5 expression were noticed with greater IA latency and elevated mGluR5 level exclusively in male KO mice. Moreover, SEPT14 KO appeared to be associated with stress-provoked anxiety increase in a stress-related navigation task regardless of animals’ sexes. While male and female WT mice demonstrated comparable cell proliferation in the dorsal and ventral hippocampal dentate gyrus (DG), both sexes of SEPT14 KO mice had increased cell proliferation in the ventral DG. Finally, male and female SEPT14 KO mice displayed dampened observational fear conditioning magnitude and learning-provoked corticosterone secretion as compared to their same-sex WT mice. These results, taken together, prompt us to conclude that male, but not female, mice lacking the Septin-14 gene may exhibit increased aversive emotion-related learning and dorsal/ventral hippocampal mGluR5 expressions. Moreover, deletion of SEPT14 may be associated with elevated ventral hippocampal DG cell proliferation and stress-provoked anxiety-like behavior, while dampening vicarious fear conditioning magnitudes.
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Affiliation(s)
- Kuan-Ru Chen
- Department of Obstetrics and Gynecology, National Cheng Kung University Hospital, National Cheng Kung University, Tainan, Taiwan
- Department of Obstetrics and Gynecology, National Cheng Kung University College of Medicine, Tainan, Taiwan
| | - Han-Yu Wang
- Institute of Basic Medical Sciences, National Cheng Kung University College of Medicine, Tainan, Taiwan
| | - Yi-Han Liao
- Department of Physiology, National Cheng Kung University College of Medicine, Tainan, Taiwan
| | - Li-Han Sun
- Institute of Basic Medical Sciences, National Cheng Kung University College of Medicine, Tainan, Taiwan
- Department of Physiology, National Cheng Kung University College of Medicine, Tainan, Taiwan
| | - Yu-Han Huang
- Department of Obstetrics and Gynecology, National Cheng Kung University Hospital, National Cheng Kung University, Tainan, Taiwan
- Department of Obstetrics and Gynecology, National Cheng Kung University College of Medicine, Tainan, Taiwan
| | - Lung Yu
- Institute of Basic Medical Sciences, National Cheng Kung University College of Medicine, Tainan, Taiwan
- Department of Physiology, National Cheng Kung University College of Medicine, Tainan, Taiwan
- Lung Yu,
| | - Pao-Lin Kuo
- Department of Obstetrics and Gynecology, National Cheng Kung University Hospital, National Cheng Kung University, Tainan, Taiwan
- Department of Obstetrics and Gynecology, National Cheng Kung University College of Medicine, Tainan, Taiwan
- *Correspondence: Pao-Lin Kuo,
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6
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Feng YQ, Xu ZZ, Wang YT, Xiong Y, Xie W, He YY, Chen L, Liu GY, Li X, Liu J, Wu Q. Targeting C–C Chemokine Receptor 5: Key to Opening the Neurorehabilitation Window After Ischemic Stroke. Front Cell Neurosci 2022; 16:876342. [PMID: 35573839 PMCID: PMC9095921 DOI: 10.3389/fncel.2022.876342] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2022] [Accepted: 04/05/2022] [Indexed: 11/13/2022] Open
Abstract
Stroke is the world’s second major cause of adult death and disability, resulting in the destruction of brain tissue and long-term neurological impairment; induction of neuronal plasticity can promote recovery after stroke. C–C chemokine receptor 5 (CCR5) can direct leukocyte migration and localization and is a co-receptor that can mediate human immunodeficiency virus (HIV) entry into cells. Its role in HIV infection and immune response has been extensively studied. Furthermore, CCR5 is widely expressed in the central nervous system (CNS), is engaged in various physiological activities such as brain development, neuronal differentiation, communication, survival, and learning and memory capabilities, and is also involved in the development of numerous neurological diseases. CCR5 is differentially upregulated in neurons after stroke, and the inhibition of CCR5 in specific regions of the brain promotes motor and cognitive recovery. The mechanism by which CCR5 acts as a therapeutic target to promote neurorehabilitation after stroke has rarely been systematically reported yet. Thus, this review aims to discuss the function of CCR5 in the CNS and the mechanism of its effect on post-stroke recovery by regulating neuroplasticity and the inflammatory response to provide an effective basis for clinical rehabilitation after stroke.
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7
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Cellular, synaptic, and network effects of chemokines in the central nervous system and their implications to behavior. Pharmacol Rep 2021; 73:1595-1625. [PMID: 34498203 PMCID: PMC8599319 DOI: 10.1007/s43440-021-00323-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2021] [Revised: 08/15/2021] [Accepted: 08/16/2021] [Indexed: 02/07/2023]
Abstract
Accumulating evidence highlights chemokines as key mediators of the bidirectional crosstalk between neurons and glial cells aimed at preserving brain functioning. The multifaceted role of these immune proteins in the CNS is mirrored by the complexity of the mechanisms underlying its biological function, including biased signaling. Neurons, only in concert with glial cells, are essential players in the modulation of brain homeostatic functions. Yet, attempts to dissect these complex multilevel mechanisms underlying coordination are still lacking. Therefore, the purpose of this review is to summarize the current knowledge about mechanisms underlying chemokine regulation of neuron-glia crosstalk linking molecular, cellular, network, and behavioral levels. Following a brief description of molecular mechanisms by which chemokines interact with their receptors and then summarizing cellular patterns of chemokine expression in the CNS, we next delve into the sequence and mechanisms of chemokine-regulated neuron-glia communication in the context of neuroprotection. We then define the interactions with other neurotransmitters, neuromodulators, and gliotransmitters. Finally, we describe their fine-tuning on the network level and the behavioral relevance of their modulation. We believe that a better understanding of the sequence and nature of events that drive neuro-glial communication holds promise for the development of new treatment strategies that could, in a context- and time-dependent manner, modulate the action of specific chemokines to promote brain repair and reduce the neurological impairment.
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8
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Liao YH, Sun LH, Chan YH, Cherng CG, Su YC, Yao WJ, Yu L. Observer's adrenal corticosterone secretion involvement in vicarious fear conditioning. Psychoneuroendocrinology 2021; 129:105246. [PMID: 33932813 DOI: 10.1016/j.psyneuen.2021.105246] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/07/2020] [Revised: 03/21/2021] [Accepted: 04/20/2021] [Indexed: 01/11/2023]
Abstract
Vicarious learning represents a far-reaching value for the survival of social animals. Adrenal hormones are known to affect many forms of learning, yet the roles of adrenal hormones in vicarious learning remain unexplored. This study was undertaken to assess whether observation-stimulated corticosterone (CORT) secretion may affect the magnitude of a vicarious fear conditioning. Mouse observers were individually subjected to an observational compartment next to the training compartment wherein three their cage-mate demonstrators received (1) 5 days of 15 randomly-scheduled footshocks (0.5 mA, 2 s in duration over a 30 min session) (G1); (2) a 30-min presentation of vanilla odors (G2); or (3) footshock delivery and vanilla odors in combination (G3). Demonstrator mice receiving G3 training session and their respective observer mice were found to exhibit greater training-induced and slightly greater observation-stimulated CORT secretion, greater vanilla odors-induced fear responses (FR) and conditioned place aversion (CPA), as compared with the observers vicariously learning from demonstrators receiving G1 or G2 sessions. Observers held in their home cages during demonstrators' trainings and those receiving null demonstrator (No Demonstrator) failed to exhibit vanilla odors-induced FR. Moreover, observers undergoing adrenalectomy (ADX) and G3 sessions exhibited lower vanilla odors-induced FR and CPA as compared to sham surgical (Sham) observers observing G3 sessions. Furthermore, systemic metyrapone injections (50 and 100 mg/kg) prior to daily vicarious G3 training session resulted in decreases in vanilla odors-induced FR and CPA magnitudes in observers. Finally, CORT (1 mg/kg)-pretreated G2 observers failed to display odors-induced FR escalation. These results, taken together, suggest that observation-stimulated CORT secretion is necessary for reliable establishment of vicarious fear conditioning in observer mice.
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Affiliation(s)
- Yi-Han Liao
- Department of Physiology, National Cheng Kung University College of Medicine, Tainan 701, Taiwan, ROC.
| | - Li-Han Sun
- Institute of Basic Medical Sciences, National Cheng Kung University College of Medicine, Tainan 701, Taiwan, ROC
| | - Ya-Hsuan Chan
- Department of Physiology, National Cheng Kung University College of Medicine, Tainan 701, Taiwan, ROC
| | - Chienfang G Cherng
- Education Center of Humanities and Social Sciences, National Yang Ming Chiao Tung University, Hsinchu 300, Taiwan, ROC
| | - Yi-Chi Su
- Department of Physiology, National Cheng Kung University College of Medicine, Tainan 701, Taiwan, ROC
| | - Wei-Jen Yao
- Ditmanson Medical Foundation Chai-Yi Christian Hospital, Chiayi 600, Taiwan, ROC.
| | - Lung Yu
- Department of Physiology, National Cheng Kung University College of Medicine, Tainan 701, Taiwan, ROC; Institute of Basic Medical Sciences, National Cheng Kung University College of Medicine, Tainan 701, Taiwan, ROC.
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9
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Necula D, Riviere-Cazaux C, Shen Y, Zhou M. Insight into the roles of CCR5 in learning and memory in normal and disordered states. Brain Behav Immun 2021; 92:1-9. [PMID: 33276089 DOI: 10.1016/j.bbi.2020.11.037] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/15/2020] [Revised: 10/25/2020] [Accepted: 11/28/2020] [Indexed: 12/21/2022] Open
Abstract
As cognitive impairments continue to rise in prevalence, there is an urgent need to understand the mechanisms of learning and memory in normal and disordered states. C-C chemokine receptor 5 (CCR5) has been implicated in the regulation of multiple forms of learning and memory via its regulation on learning-related cell signaling and neuronal plasticity. As a chemokine receptor and a co-receptor for HIV, CCR5's role in immune response and HIV-associated neurocognitive disorder (HAND) has been widely studied. In contrast, CCR5 is less understood in cognitive deficits associated with other disorders, including Alzheimer's disease (AD), stroke and certain psychiatric disorders. A broad overview of the present literature shows that CCR5 acts as a potent suppressor of synaptic plasticity and learning and memory, although a few studies have reported the opposite effect of CCR5 in stroke or AD animal models. By summarizing the current literature of CCR5 in animal and human studies of cognition, this review aims to provide a comprehensive overview of the role of CCR5 in learning and memory in both normal and disordered states and to discuss the possibility of CCR5 suppression as an effective therapeutic to alleviate cognitive deficits in HAND, AD, and stroke.
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Affiliation(s)
- Deanna Necula
- Department of Neuroscience, UCSF, San Francisco, CA, USA
| | - Cecile Riviere-Cazaux
- Graduate College of Biomedical Sciences, Western University of Health Sciences, Pomona, CA, USA
| | - Yang Shen
- Neurobiology, Psychiatry and Psychology Departments & Integrative Center for Learning and Memory, UCLA, Los Angeles, CA, USA
| | - Miou Zhou
- Graduate College of Biomedical Sciences, Western University of Health Sciences, Pomona, CA, USA.
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Friedman-Levi Y, Liraz-Zaltsman S, Shemesh C, Rosenblatt K, Kesner EL, Gincberg G, Carmichael ST, Silva AJ, Shohami E. Pharmacological blockers of CCR5 and CXCR4 improve recovery after traumatic brain injury. Exp Neurol 2021; 338:113604. [PMID: 33453212 DOI: 10.1016/j.expneurol.2021.113604] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2020] [Revised: 12/27/2020] [Accepted: 01/09/2021] [Indexed: 11/16/2022]
Abstract
CCR5 and CXCR4 are structurally related chemokine receptors that belong to the superfamily of G-protein coupled receptors through which the HIV virus enters and infects cells. Both receptors are also related to HIV-associated neurocognitive disorders that include difficulties in concentration and memory, impaired executive functions, psychomotor slowing, depression and irritability, which are also hallmarks of the long-term sequelae of TBI. Moreover, A growing body of evidence attributes negative influences to CCR5 activation on cognition, particularly after stroke and traumatic brain injury (TBI). Here we investigated the effect of their blockage on motor and cognitive functions, on brain tissue loss and preservation and on some of the biochemical pathways involved. We examined the effect of maraviroc, a CCR5 antagonist used in HIV patients as a viral entry inhibitor, and of plerixafor (AMD3100), a CXCR4 antagonist used in cancer patients as an immune-modulator, on mice subjected to closed head injury (CHI). Mice were treated with maraviroc or plerixafor after CHI for the following 4 or 5 days, respectively. Neurobehavior was assessed according to the Neurological Severity Score; cognitive tests were performed by using the Y-maze, Barnes maze and the novel object recognition test; anxiety was evaluated with the open field test. The mice were sacrificed and brain tissues were collected for Western blot, pathological and immunohistochemical analyses. Both drugs enhanced tissue preservation in the cortex, hippocampus, periventricular areas, corpus callosum and striatum, and reduced astrogliosis)GFAP expression). They also increased the levels of synaptic cognition-related signaling molecules such as phosphorylated NR1 and CREB, and the synaptic plasticity protein PSD95. Both treatments also enhanced the expression of CCR5 and CXCR4 on different brain cell types. In summary, the beneficial effects of blocking CCR5 and CXCR4 after CHI suggest that the drugs used in this study, both FDA approved and in clinical use, should be considered for translational research in TBI patients.
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Affiliation(s)
- Yael Friedman-Levi
- Department of Pharmacology, the Institute for Drug Research, The Hebrew University of Jerusalem, Jerusalem, Israel.
| | - Sigal Liraz-Zaltsman
- Department of Pharmacology, the Institute for Drug Research, The Hebrew University of Jerusalem, Jerusalem, Israel; The Joseph Sagol Neuroscience Center, Sheba Medical Center, Israel; Institute for Health and Medical Professions, Department of Sports Therapy, Ono Academic College, Kiryat Ono, Israel.
| | - Chen Shemesh
- The Joseph Sagol Neuroscience Center, Sheba Medical Center, Israel.
| | | | - Efrat L Kesner
- Department of Pharmacology, the Institute for Drug Research, The Hebrew University of Jerusalem, Jerusalem, Israel
| | - Galit Gincberg
- Department of Pharmacology, the Institute for Drug Research, The Hebrew University of Jerusalem, Jerusalem, Israel
| | - S Thomas Carmichael
- Department of Neurology, David Geffen School of Medicine, UCLA, LA, CA, USA.
| | - Alcino J Silva
- Departments of Neurobiology, Psychiatry and Biobehavioral Sciences, Psychology, Integrative Center for Learning and Memory and Brain Research Institute, UCLA, LA, CA, USA.
| | - Esther Shohami
- Department of Pharmacology, the Institute for Drug Research, The Hebrew University of Jerusalem, Jerusalem, Israel.
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