1
|
Russell B, Hrelja KM, Adams WK, Zeeb FD, Taves MD, Kaur S, Soma KK, Winstanley CA. Differential effects of lipopolysaccharide on cognition, corticosterone and cytokines in socially-housed vs isolated male rats. Behav Brain Res 2022; 433:114000. [PMID: 35817135 DOI: 10.1016/j.bbr.2022.114000] [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: 01/12/2022] [Revised: 05/20/2022] [Accepted: 07/05/2022] [Indexed: 11/25/2022]
Abstract
Social isolation is an established risk factor for mental illness and impaired immune function. Evidence suggests that neuroinflammatory processes contribute to mental illness, possibly via cytokine-induced modulation of neural activity. We examined the effects of lipopolysaccharide (LPS) administration and social home cage environment on cognitive performance in the 5-Choice Serial Reaction Time Task (5CSRTT), and their effects on corticosterone and cytokines in serum and brain tissue. Male Long-Evans rats were reared in pairs or in isolation before training on the 5CSRTT. The effects of saline and LPS (150 µg/kg i.p.) administration on sickness behaviour and task performance were then assessed. LPS-induced sickness behaviour was augmented in socially-isolated rats, translating to increased omissions and slower response times in the 5CSRTT. Both social isolation and LPS administration reduced impulsive responding, while discriminative accuracy remained unaffected. With the exception of reduced impulsivity in isolated rats, these effects were not observed following a second administration of LPS, revealing behavioural tolerance to repeated LPS injections. In a separate cohort of animals, social isolation potentiated the ability of LPS to increase serum corticosterone and IL-6, which corresponded to increased IL-6 in the orbitofrontal and medial prefrontal cortices and the nucleus accumbens. Basal IL-4 levels in the nucleus accumbens were reduced in socially-isolated rats. These findings are consistent with the adaptive response of reduced motivational drive following immune challenge, and identify social isolation as an exacerbating factor. Enhanced IL-6 signalling may play a role in mediating the potentiated behavioural response to LPS administration in isolated animals.
Collapse
Affiliation(s)
- Brittney Russell
- Department of Psychology, Djavad Mowafaghian Centre for Brain Health, University of British Columbia, Vancouver, BC, Canada; Department of Cellular and Physiological Sciences, University of British Columbia, Vancouver, BC, Canada
| | - Kelly M Hrelja
- Department of Psychology, Djavad Mowafaghian Centre for Brain Health, University of British Columbia, Vancouver, BC, Canada.
| | - Wendy K Adams
- Department of Psychology, Djavad Mowafaghian Centre for Brain Health, University of British Columbia, Vancouver, BC, Canada; Department of Cellular and Physiological Sciences, University of British Columbia, Vancouver, BC, Canada
| | - Fiona D Zeeb
- Department of Psychology, Djavad Mowafaghian Centre for Brain Health, University of British Columbia, Vancouver, BC, Canada; Department of Cellular and Physiological Sciences, University of British Columbia, Vancouver, BC, Canada
| | - Matthew D Taves
- Department of Psychology, Djavad Mowafaghian Centre for Brain Health, University of British Columbia, Vancouver, BC, Canada; Department of Zoology, University of British Columbia, Vancouver, BC, Canada; Department of Cellular and Physiological Sciences, University of British Columbia, Vancouver, BC, Canada
| | - Sukhbir Kaur
- Department of Psychology, Djavad Mowafaghian Centre for Brain Health, University of British Columbia, Vancouver, BC, Canada; Department of Cellular and Physiological Sciences, University of British Columbia, Vancouver, BC, Canada
| | - Kiran K Soma
- Department of Psychology, Djavad Mowafaghian Centre for Brain Health, University of British Columbia, Vancouver, BC, Canada; Department of Zoology, University of British Columbia, Vancouver, BC, Canada; Department of Cellular and Physiological Sciences, University of British Columbia, Vancouver, BC, Canada
| | - Catharine A Winstanley
- Department of Psychology, Djavad Mowafaghian Centre for Brain Health, University of British Columbia, Vancouver, BC, Canada; Department of Cellular and Physiological Sciences, University of British Columbia, Vancouver, BC, Canada.
| |
Collapse
|
2
|
Lopes PKF, Engel DF, Bertolini NO, de Azevedo Martins MS, Pereira CA, Velloso LA, Thomasi SS, de Moura RF. Behavioral, neuroplasticity and metabolic effects of 7,8-dihydroxy-4-methylcoumarin associated with physical activity in mice. Metab Brain Dis 2021; 36:2425-2436. [PMID: 34599738 DOI: 10.1007/s11011-021-00849-7] [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: 04/30/2021] [Accepted: 09/21/2021] [Indexed: 12/06/2022]
Abstract
The search for strategies to develop resilience against metabolic and neuropsychiatric disorders has motivated the clinical and experimental assessment of early life interventions such as lifestyle-based and use of unconventional pharmacological compounds. In this study, we assessed the effects of voluntary physical activity and 7,8-Dihydroxy-4-methylcoumarin (DHMC), independently or in combination, over mice physiological and behavioral parameters, adult hippocampal and hypothalamic neurogenesis, and neurotrophic factors expression in the hypothalamus. C57Bl/6J mice were submitted to a 29-day treatment with DHMC and allowed free access to a running wheel. We found that DHMC treatment alone reduced fasting blood glucose levels. Moreover, physical activity showed an anxiolytic effect in the elevated plus maze task and DHMC produced additional anxiolytic behavior, evidenced by reduced activity during the light cycle in the physical activity group. Although we did not find any differences in hypothalamic or hippocampal adult neurogenesis, DHMC increased gene expression levels of VEGF, which was correlated to the reduced fasting glucose levels. In conclusion, our data emphasize the potential of physical activity in reducing development of neuropsychiatric conditions, such as anxiety, and highlights DHMC as an attractive compound to be investigated in future studies addressing neuropsychiatric disorders associated with metabolic conditions.
Collapse
Affiliation(s)
| | - Daiane Fátima Engel
- Laboratory of Cell Signaling and Obesity and Comorbidities Research Center, University of Campinas, Campinas, SP, 13084-970, Brazil.
- School of Pharmacy, Federal University of Ouro Preto, Ouro Preto, MG, 35400-000, Brazil.
| | | | | | | | - Licio Augusto Velloso
- Laboratory of Cell Signaling and Obesity and Comorbidities Research Center, University of Campinas, Campinas, SP, 13084-970, Brazil
| | | | | |
Collapse
|
3
|
Adetuyi BO, Farombi EO. 6-Gingerol, an active constituent of ginger, attenuates lipopolysaccharide-induced oxidation, inflammation, cognitive deficits, neuroplasticity, and amyloidogenesis in rat. J Food Biochem 2021; 45:e13660. [PMID: 33624846 DOI: 10.1111/jfbc.13660] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2020] [Revised: 01/05/2021] [Accepted: 01/31/2021] [Indexed: 01/23/2023]
Abstract
This study examined the protective effect of 6-Gingerol (6G) against lipopolysaccharide (LPS)-induced cognitive impairments, oxidative stress, neuroplasticity, amyloidogenesis, and inflammation. Male rats were allocated into six groups in this manner; Group I placed on normal saline only. Group II was treated for 7 days with LPS alone intraperitoneally at 250 µg/kg body weight (bw). Group III received 6G alone at 50 mg/kg bw orally for 14 days. Groups IV and V received 6G at 20 and 50 mg/kg bw for 7 days, respectively, and LPS for another 7 days to induce neurotoxicity. Group VI received 5 mg/kg bw of donepezil for 7 days and LPS for 7 days. Pretreatment with 20 and 50 mg/kg bw of 6G protected against LPS-mediated learning and memory function, and also locomotor and motor deficits. Besides, 20 and 50 mg/kg bw 6G mitigated LPS-induced alteration in markers of oxidative stress. Furthermore, induction of amyloidogenesis associated with disruption of histoarchitecture and high expression of interleukin 1β, inducible nitric oxide synthase, amyloid precursor protein (APP), β-secretase 1, and brain-derived neurotrophic factor by LPS was mitigated by the two doses of 6G in the rat hippocampus and cerebral cortex region of the brain. 6G pretreatment at the two doses mitigated LPS-mediated histopathological changes in the hippocampus and cerebral cortex of rats. Overall, our results demonstrate that the protective effect of 6G is mediated through the reversal of neurobehavioral deficit, oxidative stress, inflammation, and amyloidogenesis, thus making 6G a possible chemoprophylactic agent against brain injury as a result of LPS exposure. PRACTICAL APPLICATIONS: In the search for a holistic prevention of inflammation-associated neurodegeneration, nutraceuticals are becoming prominent. Hence, this study presents 6G, an active constituent of ginger, as a chemoprotective, antioxidant, and anti-inflammatory agent, which is able to ameliorate cognitive impairments, oxidative stress, neuroplasticity, amyloidogenesis, and inflammation in LPS-induced rat model of neuroinflammation.
Collapse
Affiliation(s)
- Babatunde Oluwafemi Adetuyi
- Molecular Drug Metabolism and Toxicology Research Laboratories, Department of Biochemistry, College of Medicine, University of Ibadan, Ibadan, Nigeria
| | - Ebenezer Olatunde Farombi
- Molecular Drug Metabolism and Toxicology Research Laboratories, Department of Biochemistry, College of Medicine, University of Ibadan, Ibadan, Nigeria
| |
Collapse
|
4
|
Wang H, Tong Y, Xiao D, Xia B. Involvement of mTOR-related signaling in antidepressant effects of Sophoraflavanone G on chronically stressed mice. Phytother Res 2020; 34:2246-2257. [PMID: 32246575 DOI: 10.1002/ptr.6675] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2018] [Revised: 12/04/2019] [Accepted: 03/02/2020] [Indexed: 01/06/2023]
Abstract
SophoraflavanoneG (SG), an important prenylated flavonoid isolated from Sophoraalopecuroides.L, is effective for many illnesses. The present study was designed to investigate whether the compound could reverse depressive-like symptoms and investigate its possible mechanisms. Chronic Unpredictable Mild Stress (CUMS) mice were treated with fluoxetine and SG. The immobility time in forced swimming test (FST) and tail suspension test (TST) were recorded. The levels of pro-inflammatory cytokines and neurotransmitters in the hippocampus were evaluated. Furthermore, the protein expressions of PI3K, AKT, mTOR, p70S6K, BDNF, and Trkb in hippocampus were detected. Rapamycin, the selective mTOR inhibitor, was used to estimate the potential mechanism. As a result, after 7 days of SG treatment, the immobility time in FST and TST was declined obviously. The levels of IL-6, IL-1β, and TNF-α in the hippocampus were significantly reduced, and the quantity of 5-HT and NE was raised considerably in SG-treated group compared with the CUMS-exposed group. Additionally, SG could up-regulate the expressions of PI3K, AKT, mTOR, 70S6K, BDNF, and Trkb. The blockade of mammalian target of rapamycin signaling blunted the antidepressant effect and reversed the up-regulation of BDNF expression caused by SG. These findings suggested that SG treatment alleviated depressive-like symptoms via mTOR-mediated BDNF/Trkb signaling.
Collapse
Affiliation(s)
- Hanqing Wang
- College of Pharmacy, Ningxia Medical University, Yinchuan, China.,Ningxia Research Center of Modern Hui Medicine Engineering and Technology, Ningxia Medical University, Yinchuan, China.,Key Laboratory of Hui Ethnic Medicine Modernization, Ministry of Education, Ningxia Medical University, Yinchuan, China
| | - Yue Tong
- College of Pharmacy, Ningxia Medical University, Yinchuan, China
| | - Dong Xiao
- College of Pharmacy, Ningxia Medical University, Yinchuan, China
| | - Baomei Xia
- Faculty of Rehabilitation Science, Nanjing Normal University of Special Education, Nanjing, China
| |
Collapse
|
5
|
Kim A, Jung HG, Kim YE, Kim SC, Park JY, Lee SG, Hwang EM. The Knockdown of TREK-1 in Hippocampal Neurons Attenuate Lipopolysaccharide-Induced Depressive-Like Behavior in Mice. Int J Mol Sci 2019; 20:ijms20235902. [PMID: 31771312 PMCID: PMC6929152 DOI: 10.3390/ijms20235902] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2019] [Revised: 11/15/2019] [Accepted: 11/21/2019] [Indexed: 02/07/2023] Open
Abstract
TWIK-related potassium channel-1 (TREK-1) is broadly expressed in the brain and involved in diverse brain diseases, such as seizures, ischemia, and depression. However, the cell type-specific roles of TREK-1 in the brain are largely unknown. Here, we generated a Cre-dependent TREK-1 knockdown (Cd-TREK-1 KD) transgenic mouse containing a gene cassette for Cre-dependent TREK-1 short hairpin ribonucleic acid to regulate the cell type-specific TREK-1 expression. We confirmed the knockdown of TREK-1 by injecting adeno-associated virus (AAV) expressing Cre into the hippocampus of the mice. To study the role of hippocampal neuronal TREK-1 in a lipopolysaccharide (LPS)-induced depression model, we injected AAV-hSyn-BFP (nCTL group) or AAV-hSyn-BFP-Cre (nCre group) virus into the hippocampus of Cd-TREK-1 KD mice. Interestingly, the immobility in the tail suspension test after LPS treatment did not change in the nCre group. Additionally, some neurotrophic factors (BDNF, VEGF, and IGF-1) significantly increased more in the nCre group compared to the nCTL group after LPS treatment, but there was no difference in the expression of their receptors. Therefore, our data suggest that TREK-1 in the hippocampal neurons has antidepressant effects, and that Cd-TREK-1 KD mice are a valuable tool to reveal the cell type-specific roles of TREK-1 in the brain.
Collapse
Affiliation(s)
- Ajung Kim
- Center for Functional Connectomics, Korea Institute of Science and Technology (KIST), Seoul 02792, Korea; (A.K.); (H.-G.J.); (Y.-E.K.); (S.-C.K.)
- KHU-KIST Department of Converging Science and Technology, Graduate School, Kyung Hee University, Seoul 02447, Korea
| | - Hyun-Gug Jung
- Center for Functional Connectomics, Korea Institute of Science and Technology (KIST), Seoul 02792, Korea; (A.K.); (H.-G.J.); (Y.-E.K.); (S.-C.K.)
- School of Biosystem and Biomedical Science, College of Health Science, Korea University, Seoul 02841, Korea;
| | - Yeong-Eun Kim
- Center for Functional Connectomics, Korea Institute of Science and Technology (KIST), Seoul 02792, Korea; (A.K.); (H.-G.J.); (Y.-E.K.); (S.-C.K.)
- Division of Bio-Medical Science and Technology, KIST School, University of Science and Technology (UST), Seoul 02792, Korea
| | - Seung-Chan Kim
- Center for Functional Connectomics, Korea Institute of Science and Technology (KIST), Seoul 02792, Korea; (A.K.); (H.-G.J.); (Y.-E.K.); (S.-C.K.)
- School of Biosystem and Biomedical Science, College of Health Science, Korea University, Seoul 02841, Korea;
| | - Jae-Yong Park
- School of Biosystem and Biomedical Science, College of Health Science, Korea University, Seoul 02841, Korea;
| | - Seok-Geun Lee
- KHU-KIST Department of Converging Science and Technology, Graduate School, Kyung Hee University, Seoul 02447, Korea
- Department of Science in Korean Medicine, Kyung Hee University, Seoul 02447, Korea
- Correspondence: (S.-G.L.); (E.M.H.)
| | - Eun Mi Hwang
- Center for Functional Connectomics, Korea Institute of Science and Technology (KIST), Seoul 02792, Korea; (A.K.); (H.-G.J.); (Y.-E.K.); (S.-C.K.)
- KHU-KIST Department of Converging Science and Technology, Graduate School, Kyung Hee University, Seoul 02447, Korea
- Division of Bio-Medical Science and Technology, KIST School, University of Science and Technology (UST), Seoul 02792, Korea
- Correspondence: (S.-G.L.); (E.M.H.)
| |
Collapse
|
6
|
Yohn CN, Ashamalla SA, Bokka L, Gergues MM, Garino A, Samuels BA. Social instability is an effective chronic stress paradigm for both male and female mice. Neuropharmacology 2019; 160:107780. [PMID: 31536736 DOI: 10.1016/j.neuropharm.2019.107780] [Citation(s) in RCA: 42] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2019] [Revised: 09/11/2019] [Accepted: 09/14/2019] [Indexed: 10/26/2022]
Abstract
Despite stress-associated disorders having a higher incidence rate in females, preclinical research mainly focuses on males. Chronic stress paradigms, such as chronic social defeat and chronic corticosterone (CORT) administration, were mainly designed and validated in males and subsequent attempts to use these paradigms in females has demonstrated sex differences in the behavioral and HPA axis response to stress. Here, we assessed the behavioral response to chronic CORT exposure and developed a social stress paradigm, social instability stress (SIS), which exposes adult mice to unstable social hierarchies every 3 days for 7 weeks. Sex differences in response to chronic CORT emerged, with negative valence behaviors induced in CORT treated males, not females. SIS effectively induces negative valence behaviors in the open field, light dark, and novelty suppressed feeding tests, increases immobility in the forced swim test, and activates the hypothalamus-pituitary-adrenal (HPA) axis in both males and females. Importantly, while there were effects of estrous cycle on behavior, this variability did not impact the overall effects of SIS on behavior, suggesting estrous does not need to be tracked while utilizing SIS. Furthermore, the effects of SIS on negative valence behaviors were also reversed following chronic antidepressant treatment with fluoxetine (FLX) in both males and females. SIS also reduced adult hippocampal neurogenesis in female mice, while chronic FLX treatment increased adult hippocampal neurogenesis in both males and females. Overall, these data demonstrate that the SIS paradigm is an ethologically valid approach that effectively induces chronic stress in both adult male and adult female mice.
Collapse
Affiliation(s)
- Christine N Yohn
- Behavioral & Systems Neuroscience, Department of Psychology, Rutgers, The State University of New Jersey, 152 Frelinghuysen Rd, Piscataway, NJ, USA
| | - Sandra A Ashamalla
- Behavioral & Systems Neuroscience, Department of Psychology, Rutgers, The State University of New Jersey, 152 Frelinghuysen Rd, Piscataway, NJ, USA
| | - Leshya Bokka
- Behavioral & Systems Neuroscience, Department of Psychology, Rutgers, The State University of New Jersey, 152 Frelinghuysen Rd, Piscataway, NJ, USA
| | - Mark M Gergues
- Behavioral & Systems Neuroscience, Department of Psychology, Rutgers, The State University of New Jersey, 152 Frelinghuysen Rd, Piscataway, NJ, USA
| | - Alexander Garino
- Behavioral & Systems Neuroscience, Department of Psychology, Rutgers, The State University of New Jersey, 152 Frelinghuysen Rd, Piscataway, NJ, USA
| | - Benjamin A Samuels
- Behavioral & Systems Neuroscience, Department of Psychology, Rutgers, The State University of New Jersey, 152 Frelinghuysen Rd, Piscataway, NJ, USA.
| |
Collapse
|
7
|
Oliveira-Junior MS, Pereira EP, de Amorim VCM, Reis LTC, do Nascimento RP, da Silva VDA, Costa SL. Lupeol inhibits LPS-induced neuroinflammation in cerebellar cultures and induces neuroprotection associated to the modulation of astrocyte response and expression of neurotrophic and inflammatory factors. Int Immunopharmacol 2019; 70:302-312. [PMID: 30852286 DOI: 10.1016/j.intimp.2019.02.055] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2018] [Revised: 02/25/2019] [Accepted: 02/28/2019] [Indexed: 12/25/2022]
Abstract
In the central nervous system (CNS), neuroinflammation, especially that modulated by the cell response of astrocytes and microglia, is associated with damage to neurons in neurodegenerative disorders such as Parkinson's disease, Alzheimer's disease and, Multiple Sclerosis. Lupeol is a dietary triterpene that has demonstrated biological activities as antioxidant. This study investigated the anti-inflammatory and neuroprotective effects of lupeol in an in vitro model of neuroinflammation in primary cerebellar cultures. Cultures were obtained from 6-day-old Wistar rats, subjected to inflammatory damage with lipopolysaccharide (LPS, 1 μg/mL) and treated with lupeol (0.1 μM). We observed, after a 48-hour treatment, through Fluorjade-B staining and immunocytochemistry (ICQ) for βIII-tubulin, that lupeol induced neuroprotection in cultures submitted to inflammatory damage. On the other hand, through ICQ for GFAP, it was possible to observe that lupeol modulated the astrocyte morphology for Bergmann glia-like phenotype and, especially for velate astrocyte-like phenotype, both phenotypes associated with the neuroprotective profile. Moreover, RT-qPCR analysis showed that lupeol induced the down-regulation of the mRNA expression for proinflammatory markers TNF, iNOS and NLRP3, as well as the production of nitric oxide (method of Greiss), which were up-regulated by LPS, and also induced up-regulation of the mRNA expression for arginase and IL-6 mRNA. In addition, lupeol induced up-regulation of mRNA expression for neurotrophins GDNF and NGF and also for the sonic hedgehog-Gli pathway. Together, these results lead to the conclusion that lupeol inhibits neuroinflammation in cerebellar cultures and induces neuroprotection associated with the modulation of astrocyte response and expression of neurotrophic and inflammatory factors.
Collapse
Affiliation(s)
| | - Erica Patricia Pereira
- Department of Biochemistry and Biophysics, Institute of Health Sciences, Federal University of Bahia, Brazil
| | | | - Luã Tainã Costa Reis
- Department of Biochemistry and Biophysics, Institute of Health Sciences, Federal University of Bahia, Brazil
| | | | | | - Silvia Lima Costa
- Department of Biochemistry and Biophysics, Institute of Health Sciences, Federal University of Bahia, Brazil.
| |
Collapse
|
8
|
Goñi-Balentziaga O, Perez-Tejada J, Renteria-Dominguez A, Lebeña A, Labaka A. Social instability in female rodents as a model of stress related disorders: A systematic review. Physiol Behav 2018; 196:190-199. [DOI: 10.1016/j.physbeh.2018.09.001] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2018] [Revised: 08/29/2018] [Accepted: 09/05/2018] [Indexed: 01/29/2023]
|
9
|
Francija E, Petrovic Z, Brkic Z, Mitic M, Radulovic J, Adzic M. Disruption of the NMDA receptor GluN2A subunit abolishes inflammation-induced depression. Behav Brain Res 2018; 359:550-559. [PMID: 30296532 DOI: 10.1016/j.bbr.2018.10.011] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2018] [Revised: 10/02/2018] [Accepted: 10/04/2018] [Indexed: 11/16/2022]
Abstract
Recent reports have demonstrated that lipopolysaccharide (LPS)-induced depressive-like behaviour is mediated via NMDA receptor. In this study, we further investigated the role of GluN2 A subunit of NMDA receptor in synaptic processes in the prefrontal cortex (PFC) and hippocampus of GluN2 A knockout (KO) mice in LPS-induced depressive-like behavior. Our data suggest that LPS-treated mice, lacking GluN2 A subunit, did not exhibit depressive-like behaviour. This was accompanied by unaltered levels of IL-6 and significant changes in neuroplasticity markers and glutamate receptor subunits composition in PFC and hippocampus. In particular, an immune challenge in GluN2 A KO mice resulted in unchanged PSA-NCAM levels and proBDNF increase in both brain structures as well as in increase in BDNF levels in hippocampus. Furthermore, the absence of GluN2 A resulted in increased levels of all NCAM isoforms in PFC upon LPS which was followed with a decrease in GluN1 and GluN2B subunits. The levels of AMPA receptor subunits (GluA1, GluA3, and GluA4) in the hippocampus of GluN2 A mice were unaltered upon the treatment and abundantly present in the PFC of KO mice. These results indicate that the GluN2 A subunit is critical in neuroinflammation-related depression, that its absence abolishes LPS-induced depressive phenotype, sustains PSA-NCAM levels, increases proBDNF signalling in the PFC and hippocampus and potentiates synaptic stabilization through NCAM in the PFC upon an immune challenge.
Collapse
Affiliation(s)
- Ester Francija
- Department of Molecular Biology and Endocrinology, VINCA Institute of Nuclear Sciences, University of Belgrade, Serbia
| | - Zorica Petrovic
- Department of Molecular Biology and Endocrinology, VINCA Institute of Nuclear Sciences, University of Belgrade, Serbia
| | - Zeljka Brkic
- Department of Molecular Biology and Endocrinology, VINCA Institute of Nuclear Sciences, University of Belgrade, Serbia
| | - Milos Mitic
- Department of Molecular Biology and Endocrinology, VINCA Institute of Nuclear Sciences, University of Belgrade, Serbia
| | - Jelena Radulovic
- Department of Psychiatry and Behavioural Sciences, The Asher Center of Study and Treatment of Depressive Disorders, Feinberg School of Medicine, Northwestern University, Chicago, IL, USA
| | - Miroslav Adzic
- Department of Molecular Biology and Endocrinology, VINCA Institute of Nuclear Sciences, University of Belgrade, Serbia.
| |
Collapse
|
10
|
Gao J, Xiong B, Zhang B, Li S, Huang N, Zhan G, Jiang R, Yang L, Wu Y, Miao L, Zhu B, Yang C, Luo A. Sulforaphane Alleviates Lipopolysaccharide-induced Spatial Learning and Memory Dysfunction in Mice: The Role of BDNF-mTOR Signaling Pathway. Neuroscience 2018; 388:357-366. [PMID: 30086367 DOI: 10.1016/j.neuroscience.2018.07.052] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2018] [Revised: 07/29/2018] [Accepted: 07/30/2018] [Indexed: 12/12/2022]
Abstract
Peripheral immune activation could cause neuroinflammation, leading to a series of central nervous system (CNS) disorders, such as spatial learning and memory dysfunction. However, its pathogenic mechanism and therapeutic strategies are not yet determined. The present study aimed to investigate the therapeutic effects of sulforaphane (SFN) on lipopolysaccharide (LPS)-induced spatial learning and memory dysfunction, and tried to elucidate its relationship with the role of hippocampal brain-derived neurotrophic factor (BDNF)-mammalian target of rapamycin (mTOR) signaling pathway. Intraperitoneal injection of LPS for consecutive 7 days to mice caused abnormal behaviors in Morris water maze test (MWMT), while systemic administration of SFN notably reversed the abnormal behaviors. In addition, hippocampal levels of inflammatory cytokines, synaptic proteins, BDNF-tropomyosin receptor kinase B (TrkB) and mTOR signaling pathways were altered in the processes of LPS-induced cognitive dysfunction and SFN's therapeutic effects. Furthermore, we found that ANA-12 (a TrkB inhibitor) or rapamycin (a mTOR inhibitor) could block the beneficial effects of SFN on LPS-induced cognitive dysfunction, and that hippocampal levels of synaptic proteins, BDNF-TrkB and mTOR signaling pathways were also notably changed. In conclusion, the results of the present study suggest that SFN could elicit improving effects on LPS-induced spatial learning and memory dysfunction, which is likely related to the regulation of hippocampal BDNF-mTOR signaling pathway.
Collapse
Affiliation(s)
- Jie Gao
- Department of Anesthesiology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Bingrui Xiong
- Department of Anesthesiology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Bo Zhang
- Department of Anesthesiology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Shan Li
- Department of Anesthesiology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Niannian Huang
- Department of Anesthesiology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Gaofeng Zhan
- Department of Anesthesiology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Riyue Jiang
- Department of Internal Medicine, The Third Affiliated Hospital of Soochow University, Changzhou, China
| | - Ling Yang
- Department of Internal Medicine, The Third Affiliated Hospital of Soochow University, Changzhou, China
| | - Yeshun Wu
- Department of Internal Medicine, The Third Affiliated Hospital of Soochow University, Changzhou, China
| | - Liying Miao
- Department of Internal Medicine, The Third Affiliated Hospital of Soochow University, Changzhou, China
| | - Bin Zhu
- Department of Internal Medicine, The Third Affiliated Hospital of Soochow University, Changzhou, China
| | - Chun Yang
- Department of Anesthesiology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.
| | - Ailin Luo
- Department of Anesthesiology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.
| |
Collapse
|
11
|
Lee H, Im J, Won H, Nam W, Kim YO, Lee SW, Lee S, Cho IH, Kim HK, Kwon JT, Kim HJ. Effects of tianeptine on symptoms of fibromyalgia via BDNF signaling in a fibromyalgia animal model. THE KOREAN JOURNAL OF PHYSIOLOGY & PHARMACOLOGY : OFFICIAL JOURNAL OF THE KOREAN PHYSIOLOGICAL SOCIETY AND THE KOREAN SOCIETY OF PHARMACOLOGY 2017; 21:361-370. [PMID: 28706449 PMCID: PMC5507774 DOI: 10.4196/kjpp.2017.21.4.361] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/26/2016] [Revised: 03/14/2017] [Accepted: 04/28/2017] [Indexed: 01/12/2023]
Abstract
Previous reports have suggested that physical and psychological stresses may trigger fibromyalgia (FM). Stress is an important risk factor in the development of depression and memory impairments. Antidepressants have been used to prevent stress-induced abnormal pain sensation. Among various antidepressants, tianeptine has been reported to be able to prevent neurodegeneration due to chronic stress and reverse decreases in hippocampal volume. To assess the possible effect of tianeptine on FM symptoms, we constructed a FM animal model induced by restraint stress with intermittent cold stress. All mice underwent nociceptive assays using electronic von Frey anesthesiometer and Hargreaves equipment. To assess the relationship between tianeptine and expression levels of brain-derived neurotrophic factor (BDNF), cAMP response element-binding protein (CREB), and phosphorylated cAMP response element-binding protein (p-CREB), western blotting and immunohistochemistry analyses were performed. In behavioral analysis, nociception tests showed that pain threshold was significantly decreased in the FM group compared to that in the control group. Western blot and immunohistochemical analyses of medial prefrontal cortex (mPFC) and hippocampus showed downregulation of BDNF and p-CREB proteins in the FM group compared to the control group. However, tianeptine recovered these changes in behavioral tests and protein level. Therefore, this FM animal model might be useful for investigating mechanisms linking BDNF-CREB pathway and pain. Our results suggest that tianeptine might potentially have therapeutic efficacy for FM.
Collapse
Affiliation(s)
- Hwayoung Lee
- Department of Clinical Pharmacology, College of Medicine, Soonchunhyang University, Cheonan 31151, Korea
| | - Jiyun Im
- Department of Clinical Pharmacology, College of Medicine, Soonchunhyang University, Cheonan 31151, Korea
| | - Hansol Won
- Department of Clinical Pharmacology, College of Medicine, Soonchunhyang University, Cheonan 31151, Korea
| | - Wooyoung Nam
- Department of Clinical Pharmacology, College of Medicine, Soonchunhyang University, Cheonan 31151, Korea
| | - Young Ock Kim
- Development of Ginseng and Medical Plants Research Institute, Rural Administration, Eumseong 27709, Korea
| | - Sang Won Lee
- Development of Ginseng and Medical Plants Research Institute, Rural Administration, Eumseong 27709, Korea
| | - Sanghyun Lee
- Department of Integrative Plant Science, Chung-Ang University, Anseong 17546, Korea
| | - Ik-Hyun Cho
- Department of Convergence Medical Science, Brain Korea 21 Plus Program, and Institute of Korean Medicine, College of Oriental Medicine, Kyung Hee University, Seoul 02453, Korea
| | - Hyung-Ki Kim
- Department of Clinical Pharmacology, College of Medicine, Soonchunhyang University, Cheonan 31151, Korea
| | - Jun-Tack Kwon
- Department of Clinical Pharmacology, College of Medicine, Soonchunhyang University, Cheonan 31151, Korea
| | - Hak-Jae Kim
- Department of Clinical Pharmacology, College of Medicine, Soonchunhyang University, Cheonan 31151, Korea.,Soonchunhyang Medical Research Institute, College of Medicine, Soonchunhyang University, Cheonan 31151, Korea
| |
Collapse
|
12
|
Nowacka-Chmielewska MM, Paul-Samojedny M, Bielecka-Wajdman AM, Barski JJ, Obuchowicz E. Alterations in VEGF expression induced by antidepressant drugs in female rats under chronic social stress. Exp Ther Med 2017; 13:723-730. [PMID: 28352358 DOI: 10.3892/etm.2017.4022] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2015] [Accepted: 07/17/2016] [Indexed: 12/16/2022] Open
Abstract
Vascular endothelial growth factor (VEGF) is thought to serve a role in neurogenesis and the stress response. Although a definite link between the action of antidepressants and VEGF has not been identified, it is assumed that VEGF, as a neurotrophic factor, serves an important role in the effects of antidepressant treatment. To examine this, the present study subjected adult female rats to four weeks of social instability stress and measured the effect of antidepressant treatment on the expression of VEGF. Firstly, endocrine markers of stress and body weight were measured in parallel with behavioral tests prior to and following subjection to stress. Then, the effect of 28-day daily treatment with desipramine (DMI; 10 mg/kg), fluoxetine (5 mg/kg) or tianeptine (10 mg/kg) on the number of copies of VEGF mRNA in the amygdala, hippocampus and hypothalamus, and on serum VEGF protein levels, of rats subjected to chronic stress was determined. In addition, the weight of the adrenal glands was measured following subjection to stress. Exposure to chronic stress was found to increase the rats' sucrose preference, and diminish their tendency for general exploration and time spent in the open. The relative adrenal weights of the stressed rats were significantly increased compared with the control. Plasma concentrations of corticosterone and adrenocorticotropic hormone were not significantly augmented. In addition, the present study identified that stress elevated VEGF mRNA expression in all studied neural structures. Furthermore, the results identified that the stress-induced increase in VEGF mRNA expression in the amygdala and hypothalamus was attenuated by long-term administration of DMI. Conversely, a decrease in serum VEGF concentration was observed in stressed rats, which was not reversed by treatment with antidepressants. In conclusion, the current study suggests that under conditions of stress, VEGF serves a role in the mechanism of action of DMI, through modulating activity of the norepinephrine system.
Collapse
Affiliation(s)
- Marta Maria Nowacka-Chmielewska
- Laboratory of Molecular Biology, Faculty of Physiotherapy, The Jerzy Kukuczka Academy of Physical Education, 40-065 Katowice, Poland; Center For Experimental Medicine, School of Medicine in Katowice, Medical University of Silesia, 40-752 Katowice, Poland
| | - Monika Paul-Samojedny
- Department of Medical Genetics, School of Pharmacy with The Division of Laboratory Medicine, Medical University of Silesia, 41-200 Sosnowiec, Poland
| | - Anna Maria Bielecka-Wajdman
- Department of Pharmacology, School of Medicine in Katowice, Medical University of Silesia, 40-752 Katowice, Poland
| | - Jarosław Jerzy Barski
- Center For Experimental Medicine, School of Medicine in Katowice, Medical University of Silesia, 40-752 Katowice, Poland; Department of Physiology, School of Medicine in Katowice, Medical University of Silesia, 40-752 Katowice, Poland
| | - Ewa Obuchowicz
- Department of Pharmacology, School of Medicine in Katowice, Medical University of Silesia, 40-752 Katowice, Poland
| |
Collapse
|
13
|
Obuchowicz E, Nowacka M, Paul-Samojedny M, Bielecka-Wajdman AM, Małecki A. Sex differences in the effect of acute peripheral IL-1β administration on the brain and serum BDNF and VEGF expression in rats. Cytokine 2017; 90:6-13. [DOI: 10.1016/j.cyto.2016.10.001] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2016] [Revised: 09/07/2016] [Accepted: 10/03/2016] [Indexed: 11/24/2022]
|
14
|
Kiss A, Majercikova Z. Repeated asenapine treatment does not participate in the mild stress induced FosB/ΔFosB expression in the rat hypothalamic paraventricular nucleus neurons. Neuropeptides 2017; 61:57-65. [PMID: 27756486 DOI: 10.1016/j.npep.2016.10.003] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/30/2016] [Revised: 10/13/2016] [Accepted: 10/13/2016] [Indexed: 01/15/2023]
Abstract
Effect of repeated asenapine (ASE) treatment on FosB/ΔFosB expression was studied in the hypothalamic paraventricular nucleus (PVN) of male rats exposed to chronic mild stress (CMS) for 21days. Our intention was to find out whether repeated ASE treatment for 14days may: 1) induce FosB/ΔFosB expression in the PVN; 2) activate selected PVN neuronal phenotypes, synthesizing oxytocin (OXY), vasopressin (AVP), corticoliberin (CRH) or tyrosine hydroxylase (TH); and 3) interfere with the impact of CMS. Control, ASE, CMS, and CMS+ASE treated groups were used. CMS included restraint, social isolation, crowding, swimming, and cold. From the 7th day of CMS, rats received ASE (0.3mg/kg) or saline (300μl/rat) subcutaneously, twice a day for 14days. They were sacrificed on the day 22nd (16-18h after last treatments). FosB/ΔFosB was visualized with avidin biotin peroxidase complex and OXY, AVP, CRH or TH antibodies by fluorescent dyes. Saline and ASE did not promote FosB/ΔFosB expression in the PVN. CMS and CMS+ASE elicited FosB/ΔFosB-expression in the PVN, whereas, ASE did not augment or attenuate FosB/ΔFosB induction elicited by CMS. FosB/ΔFosB-CRH occurred after CMS and CMS+ASE treatments in the PVN middle sector, while FosB/ΔFosB-AVP and FosB/ΔFosB-OXY after CMS and CMS+ASE treatments in the PVN posterior sector. FosB/ΔFosB-TH colocalization was rare. Larger FosB/ΔFosB profiles, running above the PVN, did not show any colocalizations. The study provides an anatomical/functional knowledge about an unaccented nature of prolonged ASE treatment at the level of PVN and excludes its positive or negative interplay with CMS effect. Data indicate that long-lasting ASE treatment might not act as a stressor acting at the PVN level.
Collapse
Affiliation(s)
- Alexander Kiss
- Institute of Experimental Endocrinology, Biomedial Research Center, Slovak Academy of Sciences, Dubravska cesta 9, 845 05 Bratislava, Slovakia.
| | - Zuzana Majercikova
- Institute of Experimental Endocrinology, Biomedial Research Center, Slovak Academy of Sciences, Dubravska cesta 9, 845 05 Bratislava, Slovakia
| |
Collapse
|
15
|
The effects of desipramine, fluoxetine, or tianeptine on changes in bulbar BDNF levels induced by chronic social instability stress and inflammation. Pharmacol Rep 2017; 69:520-525. [PMID: 31994095 DOI: 10.1016/j.pharep.2017.01.004] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2016] [Accepted: 01/09/2017] [Indexed: 01/05/2023]
Abstract
BACKGROUND Stress is a major predisposing factor in the development of psychiatric disorders and potential source of augmented inflammatory processes in the brain. Increasing body of evidence shows an important role of alterations in the olfactory bulbs (OBs) function in stress-related disorders. The aim of the present study was to investigate the impact of antidepressants on the alterations of brain-derived neurotrophic factor (BDNF) induced by lipopolysaccharide (LPS) in female rats subjected to chronic social instability stress (CSIS). METHODS 9 weeks old female rats were subjected to CSIS and injected ip once daily with desipramine (10 mg/kg), fluoxetine (5 mg/kg), or tianeptine (10 mg/kg) for 4 weeks. On the last day of the experiment, rats being at the estrus phase of cycle were injected ip with LPS (1 mg/kg) or saline. RESULTS The BDNF mRNA and protein levels were evaluated in the olfactory bulbs. and the BDNF protein levels were measured in plasma. A single LPS administration in the stressed rats resulted in significant decrease in the bulbar BDNF mRNA, but not in the protein level. Chronic administration of desipramine, fluoxetine, or tianeptine increased the BDNF mRNA expression and protein levels in the LPS-injected stressed rats. There was no effect of the studied antidepressants on the reduction of the plasma BDNF protein level induced by CSIS and LPS. CONCLUSIONS These results suggest that studied antidepressants were effective in inhibiting the impact of LPS on BDNF expression in the stressed rats what may be significant for beneficial action of this drugs.
Collapse
|
16
|
Schisandra chinensis produces the antidepressant-like effects in repeated corticosterone-induced mice via the BDNF/TrkB/CREB signaling pathway. Psychiatry Res 2016; 243:135-42. [PMID: 27387555 DOI: 10.1016/j.psychres.2016.06.037] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/05/2016] [Revised: 05/16/2016] [Accepted: 06/23/2016] [Indexed: 01/08/2023]
Abstract
The present study aimed to examine the antidepressant-like effects and the possible mechanisms of Schisandra chinensis on depressive-like behavior induced by repeated corticosterone injections in mice. Here we evaluated the effect of an ethanol extract of the dried fruit of S. chinensis (EESC) on BDNF/TrkB/CREB signaling in the hippocampus and the prefrontal cortex. Three weeks of corticosterone injections in mice resulted in depressive-like behavior, as indicated by the significant decrease in sucrose consumption and increase the immobility time in the forced swim test, but without any influence on the locomotor activity. Further, there was a significant increase in serum corticosterone level and a significant downregulation of BDNF/TrkB/CREB signaling pathway in the hippocampus and prefrontal cortex in CORT-treated mice. Treatment of mice with EESC (600mg/kg) significantly ameliorated all the behavioral and biochemical changes induced by corticosterone. Moreover, pharmacological inhibition of BDNF signaling by K252a abolished entirely the antidepressant-like effect triggered by chronic EESC treatment. These results suggest that EESC produces an antidepressant-like effect in CORT-induced depression in mice, which is possibly mediated, at least in part, by rectifying the stress-based hypothalamic-pituitary-adrenal (HPA) axis dysfunction paradigm and upregulation of BDNF/TrkB/CREB signaling pathway.
Collapse
|
17
|
Song X, Zhou B, Zhang P, Lei D, Wang Y, Yao G, Hayashi T, Xia M, Tashiro SI, Onodera S, Ikejima T. Protective Effect of Silibinin on Learning and Memory Impairment in LPS-Treated Rats via ROS–BDNF–TrkB Pathway. Neurochem Res 2016; 41:1662-72. [DOI: 10.1007/s11064-016-1881-5] [Citation(s) in RCA: 50] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2015] [Revised: 02/26/2016] [Accepted: 02/29/2016] [Indexed: 12/15/2022]
|