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Ito N, Sasaki K, Takemoto H, Kobayashi Y, Isoda H, Odaguchi H. Emotional Impairments and Neuroinflammation are Induced in Male Mice Invulnerable to Repeated Social Defeat Stress. Neuroscience 2020; 443:148-163. [PMID: 32707290 DOI: 10.1016/j.neuroscience.2020.07.023] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2020] [Revised: 07/10/2020] [Accepted: 07/14/2020] [Indexed: 11/26/2022]
Abstract
Prolonged stress triggers neuroinflammation, which plays a significant role in the development of depression; however, stressed people do not always suffer from depression because of individual differences in stress vulnerability. Negative cognitive bias (NCB) toward pessimistic judgment often underlies depressive episodes. However, a relationship between stress vulnerability, neuroinflammation, and NCB remains elusive. In addition, an animal model with all the traits would be a powerful tool for studying the etiology of depression and its therapeutic approaches. Accordingly, this study evaluated the effect of stress vulnerability on neuroinflammation and depression-related behaviors, including NCB in males, using a modified version of repeated social defeat stress (mRSDS) paradigm, a validated animal model of psychosocial stress. Exposure to mRSDS, consisting of 5 min of social defeat by unfamiliar CD-1 aggressor mice for five consecutive days, caused NCB, which co-occurred with depressive- and anxiety-like behaviors, and neuroinflammation in male BALB/c mice. Treatment with minocycline, an antibiotic with anti-inflammatory property, blocked mRSDS-induced depressive-like behaviors and neuroinflammation, but not NCB, indicating the limited effect of an anti-inflammatory intervention. In addition, marked differences were found in neuroinflammatory profiles and hippocampal gene expression patterns between resilient and unstressed mice, as well as between susceptible and resilient mice. Therefore, mice resilient to mRSDS are indeed not intact. Our findings provide insights into the unique features of the mRSDS model in male BALB/c mice, which could be used to investigate the etiological mechanisms underlying depression as well as bridge the gap in the relationship between stress vulnerability, neuroinflammation, and NCB in males.
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Affiliation(s)
- Naoki Ito
- Department of Clinical Research, Oriental Medicine Research Center, Kitasato University, Minato-ku, Tokyo 108-8642, Japan.
| | - Kazunori Sasaki
- Alliance for Research on the Mediterranean and North Africa (ARENA), University of Tsukuba, Tsukuba-shi, Ibaraki 305-8572, Japan; Interdisciplinary Research Center for Catalytic Chemistry, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba-shi, Ibaraki 305-8565, Japan; Faculty of Pure and Applied Sciences, University of Tsukuba, Tsukuba-shi, Ibaraki 305-8571, Japan
| | - Hiroaki Takemoto
- School of Pharmacy, Kitasato University, Minato-ku, Tokyo 108-8642, Japan
| | - Yoshinori Kobayashi
- Department of Clinical Research, Oriental Medicine Research Center, Kitasato University, Minato-ku, Tokyo 108-8642, Japan; School of Pharmacy, Kitasato University, Minato-ku, Tokyo 108-8642, Japan
| | - Hiroko Isoda
- Alliance for Research on the Mediterranean and North Africa (ARENA), University of Tsukuba, Tsukuba-shi, Ibaraki 305-8572, Japan; Interdisciplinary Research Center for Catalytic Chemistry, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba-shi, Ibaraki 305-8565, Japan; Faculty of Life and Environmental Sciences, University of Tsukuba, Tsukuba-shi, Ibaraki 305-8572, Japan
| | - Hiroshi Odaguchi
- Department of Clinical Research, Oriental Medicine Research Center, Kitasato University, Minato-ku, Tokyo 108-8642, Japan
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Zhou Y, Tao X, Wang Z, Feng L, Wang L, Liu X, Pan R, Liao Y, Chang Q. Hippocampus Metabolic Disturbance and Autophagy Deficiency in Olfactory Bulbectomized Rats and the Modulatory Effect of Fluoxetine. Int J Mol Sci 2019; 20:ijms20174282. [PMID: 31480539 PMCID: PMC6747550 DOI: 10.3390/ijms20174282] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2019] [Revised: 08/28/2019] [Accepted: 08/29/2019] [Indexed: 02/07/2023] Open
Abstract
An olfactory bulbectomy (OBX) rodent is a widely-used model for depression (especially for agitated depression). The present study aims to investigate the hippocampus metabolic profile and autophagy-related pathways in OBX rats and to explore the modulatory roles of fluoxetine. OBX rats were given a 30-day fluoxetine treatment after post-surgery rehabilitation, and then behavioral changes were evaluated. Subsequently, the hippocampus was harvested for metabonomics analysis and Western blot detection. As a result, OBX rats exhibited a significantly increased hyperemotionality score and declined spatial memory ability. Fluoxetine reduced the hyperemotional response, but failed to restore the memory deficit in OBX rats. Sixteen metabolites were identified as potential biomarkers for the OBX model including six that were rectified by fluoxetine. Disturbed pathways were involved in amino acid metabolism, fatty acid metabolism, purine metabolism, and energy metabolism. In addition, autophagy was markedly inhibited in the hippocampus of OBX rats. Fluoxetine could promote autophagy by up-regulating the expression of LC3 II, beclin1, and p-AMPK/AMPK, and down-regulating the levels of p62, p-Akt/Akt, p-mTOR/mTOR, and p-ULK1/ULK1. Our findings indicated that OBX caused marked abnormalities in hippocampus metabolites and autophagy, and fluoxetine could partly redress the metabolic disturbance and enhance autophagy to reverse the depressive-like behavior, but not the memory deficits in OBX rats.
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Affiliation(s)
- Yunfeng Zhou
- Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100193, China
| | - Xue Tao
- Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100193, China
| | - Zhi Wang
- Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100193, China
| | - Li Feng
- School of Medicine, the Open University of China, Beijing 100039, China
| | - Lisha Wang
- Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100193, China
| | - Xinmin Liu
- Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100193, China
| | - Ruile Pan
- Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100193, China
| | - Yonghong Liao
- Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100193, China
| | - Qi Chang
- Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100193, China.
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3
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Soczynska JK, Kennedy SH, Alsuwaidan M, Mansur RB, Li M, McAndrews MP, Brietzke E, Woldeyohannes HO, Taylor VH, McIntyre RS. A pilot, open-label, 8-week study evaluating the efficacy, safety and tolerability of adjunctive minocycline for the treatment of bipolar I/II depression. Bipolar Disord 2017; 19:198-213. [PMID: 28599348 DOI: 10.1111/bdi.12496] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/14/2017] [Accepted: 04/04/2017] [Indexed: 12/11/2022]
Abstract
OBJECTIVES The objectives of the study were to determine if adjunctive minocycline mitigates depressive symptom severity and improves cognitive function in individuals with bipolar I/II disorder (BD). The study also aimed to determine if changes in depressive and/or cognitive symptoms over the course of treatment were associated with changes in circulating inflammatory cytokine levels. METHODS A total of 29 (intention-to-treat: n=27) adults meeting DSM-IV-TR criteria for a major depressive episode as part of bipolar I or II disorder (i.e. Hamilton Depression Rating Scale 17-item [HAMD-17] ≥20) were enrolled in an 8-week, open-label study with adjunctive minocycline (100 mg bid). The primary outcome measure was the Montgomery-Åsberg Depression Rating Scale (MADRS). The HAMD-17, Clinical Global Impression-Severity (CGI-S), cognitive test composite scores and plasma cytokines were secondary outcome measures. Plasma cytokines were measured with the 30 V-Plex Immunoassay from Meso Scale Discovery. RESULTS Adjunctive minocycline was associated with a reduction in depressive symptom severity from baseline to week 8 on the MADRS (P<.001, d=0.835), HAMD-17 (P<.001, d=0.949) and CGI-S (P<.001, d=1.09). Improvement in psychomotor speed, but not verbal memory or executive function, was observed only amongst individuals exhibiting a reduction in depression severity (P=.007, d=0.826). Levels of interleukin (IL)-12/23p40 (P=.002) were increased, while levels of IL-12p70 (P=.001) and C-C motif chemokine ligand 26 (CCL26) (P<.001) were reduced from baseline to week 8. A reduction in CCL26 levels was associated with a less favourable treatment response (P<.001). CONCLUSIONS Results from the pilot study suggest that adjunctive minocycline may exert antidepressant effects in individuals with bipolar depression, possibly by targeting inflammatory cytokines.
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Affiliation(s)
- Joanna K Soczynska
- Institute of Medical Science, University of Toronto, Toronto, ON, Canada.,Mood Disorders Psychopharmacology Unit, University Health Network, Toronto, ON, Canada
| | - Sidney H Kennedy
- Institute of Medical Science, University of Toronto, Toronto, ON, Canada.,Mood Disorders Psychopharmacology Unit, University Health Network, Toronto, ON, Canada.,Department of Psychiatry, University of Toronto, Toronto, ON, Canada
| | - Mohammad Alsuwaidan
- Department of Psychiatry, University of Toronto, Toronto, ON, Canada.,Department of Psychiatry, Kuwait University, Kuwait City, Kuwait
| | - Rodrigo B Mansur
- Mood Disorders Psychopharmacology Unit, University Health Network, Toronto, ON, Canada
| | - Madeline Li
- Department of Psychiatry, University of Toronto, Toronto, ON, Canada.,Psychosocial Oncology Clinic, University Health Network, Toronto, ON, Canada
| | - Mary Pat McAndrews
- Department of Psychology, University of Toronto, Toronto, ON, Canada.,Neuropsychology Clinic, University Health Network, Toronto, ON, Canada
| | - Elisa Brietzke
- Research Group in Molecular and Behavioral Neuroscience of Bipolar Disorder, Department of Psychiatry, Federal University of São Paulo, São Paulo, Brazil
| | - Hanna O Woldeyohannes
- Mood Disorders Psychopharmacology Unit, University Health Network, Toronto, ON, Canada
| | - Valerie H Taylor
- Department of Psychiatry, University of Toronto, Toronto, ON, Canada.,Department of Psychiatry, Women's College Hospital, Toronto, ON, Canada
| | - Roger S McIntyre
- Institute of Medical Science, University of Toronto, Toronto, ON, Canada.,Mood Disorders Psychopharmacology Unit, University Health Network, Toronto, ON, Canada.,Department of Psychiatry, University of Toronto, Toronto, ON, Canada.,Department of Toxicology and Pharmacology, University of Toronto, Toronto, ON, Canada
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Xu N, Tang XH, Pan W, Xie ZM, Zhang GF, Ji MH, Yang JJ, Zhou MT, Zhou ZQ. Spared Nerve Injury Increases the Expression of Microglia M1 Markers in the Prefrontal Cortex of Rats and Provokes Depression-Like Behaviors. Front Neurosci 2017; 11:209. [PMID: 28458629 PMCID: PMC5394168 DOI: 10.3389/fnins.2017.00209] [Citation(s) in RCA: 88] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2017] [Accepted: 03/28/2017] [Indexed: 11/20/2022] Open
Abstract
Pain and depression are frequently co-existent in clinical practice, yet the underlying mechanisms remain largely to be determined. Microglia activation and subsequent pro-inflammatory responses play a crucial role in the development of neuropathic pain and depression. The process of microglia polarization to the pro-inflammatory M1 or anti-inflammatory M2 phenotypes often occurs during neuroinflammation. However, it remains unclear whether M1/M2 microglia polarization is involved in the neuropathic pain induced by spared nerve injury (SNI). In the present study, the mechanical withdrawal threshold, forced swim test, sucrose preference test, and open field test were performed. The levels of microglia markers including ionized calcium-binding adaptor molecule 1 (Iba1), cluster of differentiation 11b (CD11b), M1 markers including CD68, inducible nitric oxide synthase (iNOS), interleukin-1β (IL-1β), IL-6, tumor necrosis factor-a (TNF-α), 8-hydroxy-2-deoxyguanosine (8-OH-dG), and M2 markers including CD206, arginase 1 (Arg1), IL-4 in the prefrontal cortex were determined on day 14 after SNI. The results showed that SNI produced mechanical allodynia and depressive-like behaviors, and also increased the expressions of microglia markers (Iba1, CD11b) and M1 markers (CD68, iNOS, IL-1β, TNF-α, and 8-OH-dG) in the prefrontal cortex. Notably, minocycline administration reversed these abnormalities. In addition, minocycline also promoted M2 microglia polarization as evidenced by up-regulation of CD206 and Arg1. In conclusion, data from our study suggest that SNI can lead to depression-like behaviors, while M1 polarization and consequent overproduction of pro-inflammatory cytokines plays a key role in the pathogenesis of neuropathic pain. The data furthermore indicate that modulation of inflammation by inhibition of M1 polarization could be a strategy for treatment of neuropathic pain, and might prevent the induction of neuropathic pain-induced depression symptoms.
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Affiliation(s)
- Ning Xu
- Department of Anesthesiology, Zhongda Hospital, School of Medicine, Southeast UniversityNanjing, China.,Jiangsu Province Key Laboratory of Anesthesiology, College of Anesthesiology, Xuzhou Medical UniversityXuzhou, China
| | - Xiao-Hui Tang
- Department of Anesthesiology, Jinling Hospital, School of Medicine, Nanjing UniversityNanjing, China
| | - Wei Pan
- Department of Anesthesiology, Jinling Hospital, School of Medicine, Nanjing UniversityNanjing, China
| | - Ze-Min Xie
- Jiangsu Province Key Laboratory of Anesthesiology, College of Anesthesiology, Xuzhou Medical UniversityXuzhou, China
| | - Guang-Fen Zhang
- Department of Anesthesiology, Zhongda Hospital, School of Medicine, Southeast UniversityNanjing, China
| | - Mu-Huo Ji
- Department of Anesthesiology, Zhongda Hospital, School of Medicine, Southeast UniversityNanjing, China
| | - Jian-Jun Yang
- Department of Anesthesiology, Zhongda Hospital, School of Medicine, Southeast UniversityNanjing, China.,Jiangsu Province Key Laboratory of Anesthesiology, College of Anesthesiology, Xuzhou Medical UniversityXuzhou, China
| | - Mai-Tao Zhou
- Jiangsu Province Key Laboratory of Anesthesiology, College of Anesthesiology, Xuzhou Medical UniversityXuzhou, China.,Department of Anesthesiology, 101st Hospital of PLAWuxi, China
| | - Zhi-Qiang Zhou
- Department of Anesthesiology, Zhongda Hospital, School of Medicine, Southeast UniversityNanjing, China.,Department of Anesthesiology, Jinling Hospital, School of Medicine, Nanjing UniversityNanjing, China
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The olfactory bulbectomized rat as a model of depression: The hippocampal pathway. Behav Brain Res 2016; 317:562-575. [PMID: 27633561 DOI: 10.1016/j.bbr.2016.09.029] [Citation(s) in RCA: 65] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2016] [Revised: 09/05/2016] [Accepted: 09/11/2016] [Indexed: 01/07/2023]
Abstract
In rodents, the removal of the olfactory bulbs (OBs), i.e. olfactory bulbectomy (OBX), results in numerous alterations in neurotransmitter, endocrine and immune systems, as well as behavioral changes, similar to those observed in depressed patients. Because the behavioral deficits induced in OBX animals are reversed after repeated administration of antidepressants, this is a model often used to test the effectiveness of putative antidepressant agents. Recent evidence suggests that OBX results in the dysfunction of various cellular processes within the hippocampus, including decreases in dentate gyrus neurogenesis, disruption in long-term potentiation in CA1 and CA3 subregions and neuronal atrophy in the CA1 subregion, along with downstream markers, all of which are consistent with abnormal neuronal activity in the hippocampus of clinically depressed populations. Moreover, repeated administration of novel natural and synthetic antidepressant compounds can improve certain aspects of depression-like behavior and hippocampal function. In an effort to bring together the existing literature, this review will focus on the mechanisms by which proposed pharmaceuticals impact hippocampal-dependent processes and behavior.
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6
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Minocycline ameliorates D-galactose-induced memory deficits and loss of Arc/Arg3.1 expression. Mol Biol Rep 2016; 43:1157-63. [PMID: 27497819 DOI: 10.1007/s11033-016-4051-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2015] [Accepted: 08/01/2016] [Indexed: 12/13/2022]
Abstract
Dysfunction of learning and memory is widely found in many neurological diseases. Understanding how to preserve the normal function of learning and memory will be extremely beneficial for the treatment of these diseases. However, the possible protective effect of minocycline in memory impairment is unknown. We used the well-established D-galactose rat amnesia model and two behavioral tasks, the Morris water maze and the step-down task, for memory evaluation. Western blot and PCR were used to examine the protein and mRNA levels of Arc/Arg3.1. We report that minocycline supplementation ameliorates both the spatial and fear memory deficits caused by D-galactose. We also found that Arc/Arg3.1, c-fos, and brain-derived neurotrophic factor levels are decreased in the D-galactose animal model, and that minocycline reverses the protein and mRNA levels of Arc in the hippocampus, suggesting the potential role of Arc/Arg3.1 in minocycline's neuroprotective mechanism. Our study strongly suggests that minocycline can be used as a novel treatment for memory impairment in neurological diseases.
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Holubova K, Kleteckova L, Skurlova M, Ricny J, Stuchlik A, Vales K. Rapamycin blocks the antidepressant effect of ketamine in task-dependent manner. Psychopharmacology (Berl) 2016; 233:2077-2097. [PMID: 27004790 DOI: 10.1007/s00213-016-4256-3] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/05/2015] [Accepted: 02/21/2016] [Indexed: 12/20/2022]
Abstract
OBJECTIVE The aim of our study was to test whether ketamine produces an antidepressant effect in animal model of olfactory bulbectomy and assess the role of mammalian target of rapamycin (mTOR) pathway in ketamine's antidepressant effect. METHODS Bulbectomized (OBX) rats and sham controls were assigned to four subgroups according to the treatment they received (ketamine, saline, ketamine + rapamycin, and saline + rapamycin). The animals were subjected to open field (OF), elevated plus maze (EPM), passive avoidance (PA), Morris water maze (MWM), and Carousel maze (CM) tests. Blood samples were collected before and after drug administration for analysis of phosphorylated mTOR level. After behavioral testing, brains were removed for evaluation of brain-derived neurotrophic factor (BDNF) in prefrontal cortex (PFC) and hippocampus. RESULTS Ketamine normalized hyperactivity of OBX animals in EPM and increased the time spent in open arms. Rapamycin pretreatment resulted in elimination of ketamine effect in EPM test. In CM test, ketamine + rapamycin administration led to cognitive impairment not observed in saline-, ketamine-, or saline + rapamycin-treated OBX rats. Prefrontal BDNF content was significantly decreased, and level of mTOR was significantly elevated in OBX groups. CONCLUSIONS OBX animals significantly differed from sham controls in most of the tests used. Treatment had more profound effect on OBX phenotype than controls. Pretreatment with rapamycin eliminated the anxiolytic and antidepressant effects of ketamine in task-dependent manner. The results indicate that ketamine + rapamycin application resulted in impaired stress responses manifested by cognitive deficits in active place avoidance (CM) test. Intensity of stressor (mild vs. severe) used in the behavioral tests had opposite effect on controls and on OBX animals.
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Affiliation(s)
- Kristina Holubova
- The Institute of Physiology, Academy of Sciences of the Czech Republic, v.v.i., Videnska 1083, 14220, Prague, Czech Republic.,National Institute of Mental Health, Topolova 748, 250 67 Klecany, Prague East, Czech Republic
| | - Lenka Kleteckova
- The Institute of Physiology, Academy of Sciences of the Czech Republic, v.v.i., Videnska 1083, 14220, Prague, Czech Republic.,National Institute of Mental Health, Topolova 748, 250 67 Klecany, Prague East, Czech Republic
| | - Martina Skurlova
- The Institute of Physiology, Academy of Sciences of the Czech Republic, v.v.i., Videnska 1083, 14220, Prague, Czech Republic.,National Institute of Mental Health, Topolova 748, 250 67 Klecany, Prague East, Czech Republic
| | - Jan Ricny
- National Institute of Mental Health, Topolova 748, 250 67 Klecany, Prague East, Czech Republic
| | - Ales Stuchlik
- The Institute of Physiology, Academy of Sciences of the Czech Republic, v.v.i., Videnska 1083, 14220, Prague, Czech Republic
| | - Karel Vales
- The Institute of Physiology, Academy of Sciences of the Czech Republic, v.v.i., Videnska 1083, 14220, Prague, Czech Republic. .,National Institute of Mental Health, Topolova 748, 250 67 Klecany, Prague East, Czech Republic.
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8
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Behavior and the cholinergic parameters in olfactory bulbectomized female rodents: Difference between rats and mice. Behav Brain Res 2015; 297:5-14. [PMID: 26431763 DOI: 10.1016/j.bbr.2015.09.033] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2015] [Revised: 09/24/2015] [Accepted: 09/25/2015] [Indexed: 12/20/2022]
Abstract
Olfactory bulbectomy (OBX) in rodents induces a wide spectrum of functional disturbances, including behavioral, neurochemical, and neuromorphological alterations. We have examined the effects of OBX on behavior and the parameters of the cholinergic system in female rats and mice. In rats, OBX resulted in the appearance of some depressive-like behavioral marks, such as the decreased sucrose consumption, hyperactivity, impaired short-term memory and anxiety-like behavioral features, such as shortened presence in the center of the open field arena or open arms of the elevated plus-maze and an enhancement of avoidance behavior. These behavioral abnormalities could be associated with disturbances in hippocampal function, this suggestion being supported by the presence of cellular changes in this brain structure. No effect of OBX on the number of cholinergic neurons in the medial septum-diagonal band as well as on the acetylcholine content and acetylcholinesterase activity in the septum, hippocampus, and neocortex could be detected. In contrast, in mice, OBX impaired spontaneous alternation behavior and decreased the number of cholinergic neurons in the medial septum-diagonal band. These data demonstrate that rats and mice differently respond to OBX, in particular, OBX does not significantly affect the cholinergic system in rats.
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9
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Olivier B. Serotonin: a never-ending story. Eur J Pharmacol 2014; 753:2-18. [PMID: 25446560 DOI: 10.1016/j.ejphar.2014.10.031] [Citation(s) in RCA: 160] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2014] [Revised: 10/12/2014] [Accepted: 10/16/2014] [Indexed: 12/30/2022]
Abstract
The neurotransmitter serotonin is an evolutionary ancient molecule that has remarkable modulatory effects in almost all central nervous system integrative functions, such as mood, anxiety, stress, aggression, feeding, cognition and sexual behavior. After giving a short outline of the serotonergic system (anatomy, receptors, transporter) the author's contributions over the last 40 years in the role of serotonin in depression, aggression, anxiety, stress and sexual behavior is outlined. Each area delineates the work performed on animal model development, drug discovery and development. Most of the research work described has started from an industrial perspective, aimed at developing animals models for psychiatric diseases and leading to putative new innovative psychotropic drugs, like in the cases of the SSRI fluvoxamine, the serenic eltoprazine and the anxiolytic flesinoxan. Later this research work mainly focused on developing translational animal models for psychiatric diseases and implicating them in the search for mechanisms involved in normal and diseased brains and finding new concepts for appropriate drugs.
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Affiliation(s)
- Berend Olivier
- Division of Pharmacology, Utrecht Institute for Pharmaceutical Sciences & Brain Center Rudolf Magnus, Utrecht University, Universiteitsweg 99, 3584CG Utrecht, The Netherlands; Department of Psychiatry, Yale University School of Medicine, New Haven, USA
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10
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Burke NN, Kerr DM, Moriarty O, Finn DP, Roche M. Minocycline modulates neuropathic pain behaviour and cortical M1-M2 microglial gene expression in a rat model of depression. Brain Behav Immun 2014; 42:147-56. [PMID: 24994592 DOI: 10.1016/j.bbi.2014.06.015] [Citation(s) in RCA: 125] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/09/2014] [Revised: 06/12/2014] [Accepted: 06/23/2014] [Indexed: 12/26/2022] Open
Abstract
There is a paucity of data on the role of microglia and neuroinflammatory processes in the association between chronic pain and depression. The current study examined the effect of the microglial inhibitor minocycline on depressive-like behaviour, spinal nerve ligation (SNL)-induced mechanical and cold allodynia and associated changes in the expression of genes encoding microglial markers (M1 vs. M2 polarisation) and inflammatory mediators in the prefrontal cortex in the olfactory bulbectomised (OB) rat model of depression. Acute minocycline administration did not alter OB-induced depressive-like behaviour but prevented SNL-induced mechanical allodynia in both OB and sham rats. In comparison, chronic minocycline attenuated OB-induced depressive-like behaviour and prevented the development of SNL-induced mechanical allodynia in OB, but not sham, rats. Further analysis revealed that SNL-induced mechanical allodynia in OB rats was attenuated by chronic minocycline at almost all time-points over a 2week testing period, an effect observed only from day 10 post-SNL in sham rats. Chronic administration of minocycline reduced the expression of CD11b, a marker of microglial activation, and the M1 pro-inflammatory cytokine IL-1β, in the prefrontal cortex of sham-SNL animals. In comparison, the expression of the M2 microglia marker (MRC2) and anti-inflammatory cytokine IL-10 was increased, as were IL-1β, IL-6 and SOCS3, in the prefrontal cortex of OB-SNL animals following chronic minocycline. Thus, chronic minocycline attenuates neuropathic pain behaviour and modulates microglial activation and the central expression of inflammatory mediators in a manner dependent on the presence or absence of a depressive-like phenotype.
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Affiliation(s)
- Nikita N Burke
- Physiology, School of Medicine, National University of Ireland Galway, University Road, Galway, Ireland; Pharmacology and Therapeutics, School of Medicine, National University of Ireland Galway, University Road, Galway, Ireland
| | - Daniel M Kerr
- Physiology, School of Medicine, National University of Ireland Galway, University Road, Galway, Ireland; Pharmacology and Therapeutics, School of Medicine, National University of Ireland Galway, University Road, Galway, Ireland; NCBES Centre for Pain Research and Galway Neuroscience Centre, National University of Ireland Galway, University Road, Galway, Ireland
| | - Orla Moriarty
- Pharmacology and Therapeutics, School of Medicine, National University of Ireland Galway, University Road, Galway, Ireland; NCBES Centre for Pain Research and Galway Neuroscience Centre, National University of Ireland Galway, University Road, Galway, Ireland
| | - David P Finn
- Pharmacology and Therapeutics, School of Medicine, National University of Ireland Galway, University Road, Galway, Ireland; NCBES Centre for Pain Research and Galway Neuroscience Centre, National University of Ireland Galway, University Road, Galway, Ireland
| | - Michelle Roche
- Physiology, School of Medicine, National University of Ireland Galway, University Road, Galway, Ireland; NCBES Centre for Pain Research and Galway Neuroscience Centre, National University of Ireland Galway, University Road, Galway, Ireland.
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11
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Yang SJ, Yu HY, Kang DY, Ma ZQ, Qu R, Fu Q, Ma SP. Antidepressant-like effects of salidroside on olfactory bulbectomy-induced pro-inflammatory cytokine production and hyperactivity of HPA axis in rats. Pharmacol Biochem Behav 2014; 124:451-7. [PMID: 25101546 DOI: 10.1016/j.pbb.2014.07.015] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/04/2014] [Revised: 07/17/2014] [Accepted: 07/26/2014] [Indexed: 02/05/2023]
Abstract
Salidroside (SA) is the primary bioactive marker compound in the standardized extracts from Rhodiola rosea. Although it has potential antidepressant activity in a rat behavioral despair model, the mechanisms of antidepressant effect for SA remain unclear. The objective of this study was to evaluate the antidepressant effects of SA and to discuss the potential mechanisms in olfactory bulbectomized (OBX) rats. SA of 20, 40 mg/kg (p.o.) for 2 weeks notably alleviated OBX-induced hyperactivity in open field test, decreased immobility time in TST and FST. Chronic treatment with SA could remarkably reduce TNF-α and IL-1β levels in hippocampus. Western blot showed that SA could markedly increase glucocorticoid receptor (GR) and brain-derived neurotrophic factor (BDNF) expression in the hippocampus. Besides, SA could also attenuate corticotropin-releasing hormone (CRH) expression in hypothalamus, as well as reducing significantly the levels of serum corticosterone. In conclusion, this study demonstrated that OBX rats treated with SA could significantly improve the depressive-like behaviors. The antidepressant mechanisms of SA might be associated with its anti-inflammatory effects and the regulation of HPA axis activity. Reversal of abnormalities of GR may be partly responsible for those effects. These findings suggested that SA might become a beneficial agent to prevent and treat the depression.
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Affiliation(s)
- Shui-Jin Yang
- Department of Pharmacology of Chinese Materia Medica, China Pharmaceutical University, Nanjing 210009, PR China
| | - Hai-Yang Yu
- Department of Pharmacology of Chinese Materia Medica, China Pharmaceutical University, Nanjing 210009, PR China
| | - Dan-Yu Kang
- Department of Pharmacology of Chinese Materia Medica, China Pharmaceutical University, Nanjing 210009, PR China
| | - Zhan-Qiang Ma
- Department of Pharmacology of Chinese Materia Medica, China Pharmaceutical University, Nanjing 210009, PR China
| | - Rong Qu
- Discipline of Chinese and Western Integrative Medicine, Nanjing University of Chinese Medicine, Nanjing 210046, PR China
| | - Qiang Fu
- Department of Pharmacology of Chinese Materia Medica, China Pharmaceutical University, Nanjing 210009, PR China.
| | - Shi-Ping Ma
- Department of Pharmacology of Chinese Materia Medica, China Pharmaceutical University, Nanjing 210009, PR China.
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12
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Liaury K, Miyaoka T, Tsumori T, Furuya M, Hashioka S, Wake R, Tsuchie K, Fukushima M, Limoa E, Tanra AJ, Horiguchi J. Minocycline improves recognition memory and attenuates microglial activation in Gunn rat: a possible hyperbilirubinemia-induced animal model of schizophrenia. Prog Neuropsychopharmacol Biol Psychiatry 2014; 50:184-90. [PMID: 24389395 DOI: 10.1016/j.pnpbp.2013.12.017] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/11/2013] [Revised: 12/17/2013] [Accepted: 12/18/2013] [Indexed: 12/31/2022]
Abstract
BACKGROUND Accumulating evidence indicates that neuroinflammation plays a significant role in the pathophysiology of schizophrenia. We previously reported evidence of schizophrenia-like behaviors and microglial activation in Gunn rats. We concluded that the Gunn rat, which exhibits a high concentration of unconjugated bilirubin, may be useful as an animal model of schizophrenia. On the other hand, there have been numerous reports that minocycline is effective in treating schizophrenia. METHODS In the present study, we investigated the effects of minocycline on performance of behavioral tests (prepulse inhibition (PPI) and novel object recognition test (NORT)) after animals received either 40mg/kg/d of minocycline or vehicle by intraperitoneal (i.p.) injection for 14 consecutive days. Furthermore, we examined the effects of minocycline on microglial activation in the hippocampal dentate gyrus of Gunn rats and Wistar rats. RESULTS We found that administration of minocycline for 14days significantly increased the exploratory preference in retention sessions and tended to improve the PPI deficits in Gunn rats. Immunohistochemistry analysis revealed that microglial cells in the minocycline-treated Gunn rat group showed less expression of CD11b compared to vehicle-treated Gunn and Wistar groups. CONCLUSIONS Our findings suggest that minocycline improves recognition memory and attenuates microglial activation in the hippocampal dentate gyrus of Gunn rats. Therefore, minocycline may be a potential therapeutic drug for schizophrenia.
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Affiliation(s)
- Kristian Liaury
- Department of Psychiatry, Shimane University Faculty of Medicine, 89-1 Enya-cho, Izumo 693-8501, Japan; Department of Psychiatry, Hasanuddin University Faculty of Medicine, Jl. Perintis Kemerdekaan Km. 10, Makassar 90245, South Sulawesi, Indonesia.
| | - Tsuyoshi Miyaoka
- Department of Psychiatry, Shimane University Faculty of Medicine, 89-1 Enya-cho, Izumo 693-8501, Japan.
| | - Toshiko Tsumori
- Department of Anatomy Morphological Neuroscience, Shimane University Faculty of Medicine, 89-1 Enya-cho, Izumo 693-8501, Japan; Department of Nursing, Faculty of Health and Welfare, Prefectural University of Hiroshima, 1-1 Gakuen-cho, Mihara 723-0053, Japan.
| | - Motohide Furuya
- Department of Psychiatry, Shimane University Faculty of Medicine, 89-1 Enya-cho, Izumo 693-8501, Japan.
| | - Sadayuki Hashioka
- Department of Psychiatry, Shimane University Faculty of Medicine, 89-1 Enya-cho, Izumo 693-8501, Japan.
| | - Rei Wake
- Department of Psychiatry, Shimane University Faculty of Medicine, 89-1 Enya-cho, Izumo 693-8501, Japan.
| | - Keiko Tsuchie
- Department of Psychiatry, Shimane University Faculty of Medicine, 89-1 Enya-cho, Izumo 693-8501, Japan.
| | - Michiyo Fukushima
- Department of Psychiatry, Shimane University Faculty of Medicine, 89-1 Enya-cho, Izumo 693-8501, Japan.
| | - Erlyn Limoa
- Department of Psychiatry, Shimane University Faculty of Medicine, 89-1 Enya-cho, Izumo 693-8501, Japan; Department of Psychiatry, Hasanuddin University Faculty of Medicine, Jl. Perintis Kemerdekaan Km. 10, Makassar 90245, South Sulawesi, Indonesia.
| | - Andi Jayalangkara Tanra
- Department of Psychiatry, Hasanuddin University Faculty of Medicine, Jl. Perintis Kemerdekaan Km. 10, Makassar 90245, South Sulawesi, Indonesia.
| | - Jun Horiguchi
- Department of Psychiatry, Shimane University Faculty of Medicine, 89-1 Enya-cho, Izumo 693-8501, Japan.
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13
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Quercetin suppress microglial neuroinflammatory response and induce antidepressent-like effect in olfactory bulbectomized rats. Neuroscience 2013; 255:86-98. [DOI: 10.1016/j.neuroscience.2013.09.044] [Citation(s) in RCA: 75] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2013] [Revised: 09/19/2013] [Accepted: 09/22/2013] [Indexed: 01/03/2023]
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14
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Borre YE, Panagaki T, Koelink PJ, Morgan ME, Hendriksen H, Garssen J, Kraneveld AD, Olivier B, Oosting RS. Neuroprotective and cognitive enhancing effects of a multi-targeted food intervention in an animal model of neurodegeneration and depression. Neuropharmacology 2013; 79:738-49. [PMID: 24286859 DOI: 10.1016/j.neuropharm.2013.11.009] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2013] [Revised: 11/13/2013] [Accepted: 11/16/2013] [Indexed: 01/24/2023]
Abstract
Rising neurodegenerative and depressive disease prevalence combined with the lack of effective pharmaceutical treatments and dangerous side effects, has created an urgent need for the development of effective therapies. Considering that these disorders are multifactorial in origin, treatments designed to interfere at different mechanistic levels may be more effective than the traditional single-targeted pharmacological concepts. To that end, an experimental diet composed of zinc, melatonin, curcumin, piperine, eicosapentaenoic acid (EPA, 20:5, n-3), docosahexaenoic acid (DHA, 22:6, n-3), uridine, and choline was formulated. This diet was tested on the olfactory bulbectomized rat (OBX), an established animal model of depression and cognitive decline. The ingredients of the diet have been individually shown to attenuate glutamate excitoxicity, exert potent anti-oxidant/anti-inflammatory properties, and improve synaptogenesis; processes that all have been implicated in neurodegenerative diseases and in the cognitive deficits following OBX in rodents. Dietary treatment started 2 weeks before OBX surgery, continuing for 6 weeks in total. The diet attenuated OBX-induced cognitive and behavioral deficits, except long-term spatial memory. Ameliorating effects of the diet extended to the control animals. Furthermore, the experimental diet reduced hippocampal atrophy and decreased the peripheral immune activation in the OBX rats. The ameliorating effects of the diet on the OBX-induced changes were comparable to those of the NMDA receptor antagonist, memantine, a drug used for the management of Alzheimer's disease. This proof-of-concept study suggests that a diet, which simultaneously targets multiple disease etiologies, can prevent/impede the development of a neurodegenerative and depressive disorders and the concomitant cognitive deficits.
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Affiliation(s)
- Yuliya E Borre
- Division of Pharmacology, Utrecht Institute for Pharmaceutical Sciences, Faculty of Science, Utrecht University, PO Box 80082, 3508 TB Utrecht, The Netherlands; Rudolf Magnus Institute of Neuroscience, Utrecht University, PO Box 80082, 3508 TB Utrecht, The Netherlands.
| | - Theodora Panagaki
- Division of Pharmacology, Utrecht Institute for Pharmaceutical Sciences, Faculty of Science, Utrecht University, PO Box 80082, 3508 TB Utrecht, The Netherlands
| | - Pim J Koelink
- Division of Pharmacology, Utrecht Institute for Pharmaceutical Sciences, Faculty of Science, Utrecht University, PO Box 80082, 3508 TB Utrecht, The Netherlands
| | - Mary E Morgan
- Division of Pharmacology, Utrecht Institute for Pharmaceutical Sciences, Faculty of Science, Utrecht University, PO Box 80082, 3508 TB Utrecht, The Netherlands
| | - Hendrikus Hendriksen
- Division of Pharmacology, Utrecht Institute for Pharmaceutical Sciences, Faculty of Science, Utrecht University, PO Box 80082, 3508 TB Utrecht, The Netherlands; Rudolf Magnus Institute of Neuroscience, Utrecht University, PO Box 80082, 3508 TB Utrecht, The Netherlands
| | - Johan Garssen
- Division of Pharmacology, Utrecht Institute for Pharmaceutical Sciences, Faculty of Science, Utrecht University, PO Box 80082, 3508 TB Utrecht, The Netherlands; Danone Research, Center for Specialized Nutrition, Wageningen, The Netherlands
| | - Aletta D Kraneveld
- Division of Pharmacology, Utrecht Institute for Pharmaceutical Sciences, Faculty of Science, Utrecht University, PO Box 80082, 3508 TB Utrecht, The Netherlands
| | - Berend Olivier
- Division of Pharmacology, Utrecht Institute for Pharmaceutical Sciences, Faculty of Science, Utrecht University, PO Box 80082, 3508 TB Utrecht, The Netherlands; Rudolf Magnus Institute of Neuroscience, Utrecht University, PO Box 80082, 3508 TB Utrecht, The Netherlands
| | - Ronald S Oosting
- Division of Pharmacology, Utrecht Institute for Pharmaceutical Sciences, Faculty of Science, Utrecht University, PO Box 80082, 3508 TB Utrecht, The Netherlands; Rudolf Magnus Institute of Neuroscience, Utrecht University, PO Box 80082, 3508 TB Utrecht, The Netherlands
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15
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Dinan TG, Cryan JF. Melancholic microbes: a link between gut microbiota and depression? Neurogastroenterol Motil 2013; 25:713-9. [PMID: 23910373 DOI: 10.1111/nmo.12198] [Citation(s) in RCA: 270] [Impact Index Per Article: 24.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/04/2013] [Accepted: 07/05/2013] [Indexed: 12/14/2022]
Abstract
There is a growing awareness of the potential for microbiota to influence gut-brain communication in health and disease. A variety of strategies have been used to study the impact of the microbiota on brain function and these include antibiotic use, probiotic treatments, fecal microbiota transplantation, gastrointestinal infection studies, and germ-free studies. All of these approaches provide evidence to support the view that the microbiota can influence brain chemistry and consequently behavior. Efforts are now turning to investigate the role of microbiota in animal models of psychopathology. Animal models of depression are thus essential in studying the complex interplay between the microbiota and brain. Recent studies published in this Journal and elsewhere demonstrate that there is a distinct perturbation of the composition of gut microbiota in animal models of depression and chronic stress. This has direct implications for the development of psychobiotic-based therapeutic strategies for psychiatric disorders. Moreover, given that affective co-morbidities, such as major depression and anxiety states, are common in patients presenting with irritable bowel syndrome (IBS), it may have implications for functional bowel disorders also. Further studies require appropriately phenotyped patients with depression and/or IBS using a judicious use of techniques including functional imaging and in depth microbial pyrosequencing.
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Affiliation(s)
- T G Dinan
- Alimentary Pharmabiotic Centre, University College Cork, Cork, Ireland
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Burke NN, Geoghegan E, Kerr DM, Moriarty O, Finn DP, Roche M. Altered neuropathic pain behaviour in a rat model of depression is associated with changes in inflammatory gene expression in the amygdala. GENES BRAIN AND BEHAVIOR 2013; 12:705-13. [PMID: 23957449 DOI: 10.1111/gbb.12080] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/17/2013] [Revised: 07/30/2013] [Accepted: 08/15/2013] [Indexed: 12/22/2022]
Abstract
The association between chronic pain and depression is widely recognized, the comorbidity of which leads to a heavier disease burden, increased disability and poor treatment response. This study examined nociceptive responding to mechanical and thermal stimuli prior to and following L5-L6 spinal nerve ligation (SNL), a model of neuropathic pain, in the olfactory bulbectomized (OB) rat model of depression. Associated changes in the expression of genes encoding for markers of glial activation and cytokines were subsequently examined in the amygdala, a key brain region for the modulation of emotion and pain. The OB rats exhibited mechanical and cold allodynia, but not heat hyperalgesia, when compared with sham-operated counterparts. Spinal nerve ligation induced characteristic mechanical and cold allodynia in the ipsilateral hindpaw of both sham and OB rats. The OB rats exhibited a reduced latency and number of responses to an innocuous cold stimulus following SNL, an effect positively correlated with interleukin (IL)-6 and IL-10 mRNA expression in the amygdala, respectively. Spinal nerve ligation reduced IL-6 and increased IL-10 expression in the amygdala of sham rats. The expression of CD11b (cluster of differentiation molecule 11b) and GFAP (glial fibrillary acidic protein), indicative of microglial and astrocyte activation, and IL-1β in the amygdala was enhanced in OB animals when compared with sham counterparts, an effect not observed following SNL. This study shows that neuropathic pain-related responding to an innocuous cold stimulus is altered in an animal model of depression, effects accompanied by changes in the expression of neuroinflammatory genes in the amygdala.
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