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Wu X, Wen G, Yan L, Wang Y, Ren X, Li G, Luo Y, Shang J, Lu L, Hermenean A, Yao J, Li B, Lu Y, Wu X. Ketamine administration causes cognitive impairment by destroying the circulation function of the glymphatic system. Biomed Pharmacother 2024; 175:116739. [PMID: 38759288 DOI: 10.1016/j.biopha.2024.116739] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2024] [Revised: 04/30/2024] [Accepted: 05/09/2024] [Indexed: 05/19/2024] Open
Abstract
BACKGROUND Ketamine, as a non-competitive antagonist of N-methyl-D-aspartate (NMDA) receptors, was originally used in general anesthesia. Epidemiological data show that ketamine has become one of the most commonly abused drugs in China. Ketamine administration might cause cognitive impairment; however, its molecular mechanism remains unclear. The glymphatic system is a lymphoid system that plays a key role in metabolic waste removal and cognitive regulation in the central nervous system. METHODS Focusing on the glymphatic system, this study evaluated the behavioral performance and circulatory function of the glymphatic system by building a short-term ketamine administration model in mice, and detected the expression levels of the 5-HT2c receptor, ΔFosb, Pten, Akt, and Aqp4 in the hippocampus. Primary astrocytes were cultured to verify the regulatory relationships among related indexes using a 5-HT2c receptor antagonist, a 5-HT2c receptor short interfering RNA (siRNA), and a ΔFosb siRNA. RESULTS Ketamine administration induced ΔFosb accumulation by increasing 5-HT2c receptor expression in mouse hippocampal astrocytes and primary astrocytes. ΔFosb acted as a transcription factor to recognize the AATGATTAAT bases in the 5' regulatory region of the Aqp4 gene (-1096 bp to -1087 bp), which inhibited Aqp4 expression, thus causing the circulatory dysfunction of the glymphatic system, leading to cognitive impairment. CONCLUSIONS Although this regulatory mechanism does not involve the Pten/Akt pathway, this study revealed a new mechanism of ketamine-induced cognitive impairment in non-neuronal systems, and provided a theoretical basis for the safety of clinical treatment and the effectiveness of withdrawal.
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Affiliation(s)
- Xue Wu
- China Medical University School of Forensic Medicine, Shenyang, China; Liaoning Province Key Laboratory of Forensic Bio-evidence Sciences, China; China Medical University Center of Forensic Investigation, China
| | - Gehua Wen
- China Medical University School of Forensic Medicine, Shenyang, China; Liaoning Province Key Laboratory of Forensic Bio-evidence Sciences, China; China Medical University Center of Forensic Investigation, China
| | - Lei Yan
- China Medical University School of Forensic Medicine, Shenyang, China; Liaoning Province Key Laboratory of Forensic Bio-evidence Sciences, China; China Medical University Center of Forensic Investigation, China
| | - Yexin Wang
- Key Laboratory of Health Ministry in Congenital Malformation, Affiliated Shengjing Hospital of China Medical University, Shenyang, China
| | - Xinghua Ren
- Key Laboratory of Health Ministry in Congenital Malformation, Affiliated Shengjing Hospital of China Medical University, Shenyang, China
| | - Guiji Li
- Key Laboratory of Health Ministry in Congenital Malformation, Affiliated Shengjing Hospital of China Medical University, Shenyang, China
| | - Yu Luo
- China Medical University School of Forensic Medicine, Shenyang, China; Liaoning Province Key Laboratory of Forensic Bio-evidence Sciences, China; China Medical University Center of Forensic Investigation, China
| | - Junbo Shang
- China Medical University School of Forensic Medicine, Shenyang, China; Liaoning Province Key Laboratory of Forensic Bio-evidence Sciences, China; China Medical University Center of Forensic Investigation, China
| | - Lei Lu
- Department of pediatrics Neonatology, University of Chicago, Chicago, IL 60615, USA
| | - Anca Hermenean
- Faculty of Medicine, Vasile Goldis Western University of Arad, Romania
| | - Jun Yao
- China Medical University School of Forensic Medicine, Shenyang, China; Liaoning Province Key Laboratory of Forensic Bio-evidence Sciences, China; China Medical University Center of Forensic Investigation, China
| | - Baoman Li
- China Medical University School of Forensic Medicine, Shenyang, China; Liaoning Province Key Laboratory of Forensic Bio-evidence Sciences, China; China Medical University Center of Forensic Investigation, China.
| | - Yan Lu
- Key Laboratory of Health Ministry in Congenital Malformation, Affiliated Shengjing Hospital of China Medical University, Shenyang, China.
| | - Xu Wu
- China Medical University School of Forensic Medicine, Shenyang, China; Liaoning Province Key Laboratory of Forensic Bio-evidence Sciences, China; China Medical University Center of Forensic Investigation, China.
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2
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Liu X, Qi S, Hou L, Liu Y, Wang X. Noninvasive Deep Brain Stimulation via Temporal Interference Electric Fields Enhanced Motor Performance of Mice and Its Neuroplasticity Mechanisms. Mol Neurobiol 2024; 61:3314-3329. [PMID: 37987957 DOI: 10.1007/s12035-023-03721-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2023] [Accepted: 10/17/2023] [Indexed: 11/22/2023]
Abstract
A noninvasive deep brain stimulation via temporal interference (TI) electric fields is a novel neuromodulation technology, but few advances about TI stimulation effectiveness and mechanisms have been reported. One hundred twenty-six mice were selected for the experiment by power analysis. In the present study, TI stimulation was proved to stimulate noninvasively primary motor cortex (M1) of mice, and 7-day TI stimulation with an envelope frequency of 20 Hz (∆f =20 Hz), instead of an envelope frequency of 10 Hz (∆f =10 Hz), could obviously improve mice motor performance. The mechanism of action may be related to enhancing the strength of synaptic connections, improving synaptic transmission efficiency, increasing dendritic spine density, promoting neurotransmitter release, and increasing the expression and activity of synapse-related proteins, such as brain-derived neurotrophic factor (BDNF), postsynaptic density protein-95 (PSD-95), and glutamate receptor protein. Furthermore, the phosphatidylinositol 3-kinase (PI3K)/protein kinase B (AKT) signaling pathway and its upstream BDNF play an important role in the enhancement of locomotor performance in mice by TI stimulation. To our knowledge, it is the first report about TI stimulation promoting multiple motor performances and describing its mechanisms. TI stimulation might serve as a novel promising approach to enhance motor performance and treat dysfunction in deep brain regions.
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Affiliation(s)
- Xiaodong Liu
- School of Exercise and Health, Shanghai University of Sport, Shanghai, China
| | - Shuo Qi
- School of Exercise and Health, Shanghai University of Sport, Shanghai, China
| | - Lijuan Hou
- College of Physical Education and Sports, Beijing Normal University, Beijing, China
| | - Yu Liu
- School of Exercise and Health, Shanghai University of Sport, Shanghai, China.
| | - Xiaohui Wang
- School of Exercise and Health, Shanghai University of Sport, Shanghai, China.
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Zeng J, Xie Z, Chen L, Peng X, Luan F, Hu J, Xie H, Liu R, Zeng N. Rosmarinic acid alleviate CORT-induced depressive-like behavior by promoting neurogenesis and regulating BDNF/TrkB/PI3K signaling axis. Biomed Pharmacother 2024; 170:115994. [PMID: 38070249 DOI: 10.1016/j.biopha.2023.115994] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2023] [Revised: 11/25/2023] [Accepted: 12/06/2023] [Indexed: 01/10/2024] Open
Abstract
Rosmarinic acid (RA), a natural phenolic acid compound with a variety of bioactive properties. However, the antidepressant activity and mechanism of RA remain unclear. The aim of this study is to investigate the effects and potential mechanisms of RA on chronic CORT injection induced depression-like behavior in mice. Male C57BL/6 J mice were intraperitoneally injected with CORT (10 mg/kg) and were orally given RA daily (10 or 20 mg/kg) for 21 consecutive days. In vitro, the HT22 cells were exposed to CORT (200 μM) with RA (12.5, 25 or 50 μM) and LY294002 (a PI3K inhibitor) or ANA-12 (a TrkB inhibitor) treatment. The depression-like behavior and various neurobiological changes in the mice and cell injury and levels of target proteins in vitro were subsequently assessed. Here, RA treatment decreased the expression of p-GR/GR, HSP90, FKBP51, SGK-1 in mice hippocampi. Besides, RA increased the average optical density of Nissl bodies and number of dendritic spines in CA3 region, and enhanced Brdu and DCX expression and synaptic transduction in DG region, as well as up-regulated both the BDNF/TrkB/CREB and PI3K/Akt/mTOR signaling. Moreover, RA reduced structural damage and apoptosis in HT22 cells, increased the differentiation and maturation of them. More importantly, LY294002, but not ANA-12, reversed the effect of RA on GR nuclear translocation. Taken together, RA exerted antidepressant activities by modulating the hippocampal glucocorticoid signaling and hippocampal neurogenesis, which related to the BDNF/TrkB/PI3K signaling axis regulating GR nuclear translocation, provide evidence for the application of RA as a candidate for depression.
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Affiliation(s)
- Jiuseng Zeng
- State Key Laboratory of Southwestern Chinese Medicine Resources, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, China; Department of Pharmacology, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, China
| | - Zhiqiang Xie
- Department of Pharmacology, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, China
| | - Li Chen
- State Key Laboratory of Southwestern Chinese Medicine Resources, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, China; Department of Pharmacy, Clinical Medical College and the First Affiliated Hospital of Chengdu Medical College, Chengdu 610500, China
| | - Xi Peng
- State Key Laboratory of Southwestern Chinese Medicine Resources, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, China; Department of Pharmacology, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, China
| | - Fei Luan
- School of Pharmacy, The Key Laboratory of Basic and New Drug Research of Traditional Chinese Medicine, Shaanxi University of Chinese Medicine, Xianyang 712046, Shaanxi, China
| | - Jingwen Hu
- Department of Pharmacology, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, China
| | - Hongxiao Xie
- Department of Pharmacology, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, China
| | - Rong Liu
- Department of Pharmacology, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, China
| | - Nan Zeng
- State Key Laboratory of Southwestern Chinese Medicine Resources, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, China; Department of Pharmacology, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, China.
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4
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Luz DA, Pinheiro AM, Fontes-Júnior EA, Maia CSF. Neuroprotective, neurogenic, and anticholinergic evidence of Ganoderma lucidum cognitive effects: Crucial knowledge is still lacking. Med Res Rev 2023; 43:1504-1536. [PMID: 37052237 DOI: 10.1002/med.21957] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2022] [Revised: 12/14/2022] [Accepted: 03/24/2023] [Indexed: 04/14/2023]
Abstract
Ganoderma lucidum is a mushroom that has been widely used for centuries in Asian countries for its antiaging properties. It is popularly known as "Ling Zhi," "Reishi," and "Youngzhi," and because of its benefits, it is known as the "immortality mushroom." Pharmacological assays have revealed that G. lucidum ameliorates cognitive impairments through inhibition of β-amyloid and neurofibrillary tangle formation, antioxidant effect, reduction of inflammatory cytokine release and apoptosis, genic expression modulation, among other activities. Chemical investigations on G. lucidum have revealed the presence of metabolites such as triterpenes, which are the most explored in this field, as well as flavonoids, steroids, benzofurans, and alkaloids; in the literature, these have also been reported to have mnemonic activity. These properties of the mushroom make it a potential source of new drugs to prevent or reverse memory disorders, as actual medications are able to only alleviate some symptoms but are unable to stop the progress of cognitive impairments, with no impact on social, familiar, and personal relevance. In this review, we discuss the cognitive findings of G. lucidum reported in the literature, converging the proposed mechanisms through the several pathways that underlie memory and cognition processes. In addition, we highlight the gaps that deserve particular attention to support future studies.
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Affiliation(s)
- Diandra A Luz
- Laboratory of Pharmacology of Inflammation and Behavior, Institute of Health Science, Faculty of Pharmacy, Federal University of Pará, Belém, Pará, Brazil
| | - Alana M Pinheiro
- Laboratory of Pharmacology of Inflammation and Behavior, Institute of Health Science, Faculty of Pharmacy, Federal University of Pará, Belém, Pará, Brazil
| | - Enéas A Fontes-Júnior
- Laboratory of Pharmacology of Inflammation and Behavior, Institute of Health Science, Faculty of Pharmacy, Federal University of Pará, Belém, Pará, Brazil
| | - Cristiane S F Maia
- Laboratory of Pharmacology of Inflammation and Behavior, Institute of Health Science, Faculty of Pharmacy, Federal University of Pará, Belém, Pará, Brazil
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Wang J, Wang J, Wang Y, Chai Y, Li H, Miao D, Liu H, Li J, Bao J. Music with Different Tones Affects the Development of Brain Nerves in Mice in Early Life through BDNF and Its Downstream Pathways. Int J Mol Sci 2023; 24:ijms24098119. [PMID: 37175826 PMCID: PMC10179650 DOI: 10.3390/ijms24098119] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2023] [Revised: 04/15/2023] [Accepted: 04/28/2023] [Indexed: 05/15/2023] Open
Abstract
As a means of environmental enrichment, music environment has positive and beneficial effects on biological neural development. Kunming white mice (61 days old) were randomly divided into the control group (group C), the group of D-tone (group D), the group of A-tone (group A) and the group of G-tone (group G). They were given different tonal music stimulation (group A) for 14 consecutive days (2 h/day) to study the effects of tonal music on the neural development of the hippocampus and prefrontal cortex of mice in early life and its molecular mechanisms. The results showed that the number of neurons in the hippocampus and prefrontal cortex of mice increased, with the cell morphology relatively intact. In addition, the number of dendritic spines and the number of dendritic spines per unit length were significantly higher than those in group C, and the expressions of synaptic plasticity proteins (SYP and PSD95) were also significantly elevated over those in group C. Compared with group C, the expression levels of BDNF, TRKB, CREB, PI3K, AKT, GS3Kβ, PLCγ1, PKC, DAG, ERK and MAPK genes and proteins in the hippocampus and prefrontal cortex of mice in the music groups were up-regulated, suggesting that different tones of music could regulate neural development through BDNF and its downstream pathways. The enrichment environment of D-tone music is the most suitable tone for promoting the development of brain nerves in early-life mice. Our study provides a basis for screening the optimal tone of neuroplasticity in early-life mice and for the treatment of neurobiology and neurodegenerative diseases.
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Affiliation(s)
- Jing Wang
- College of Life Science, Northeast Agricultural University, Harbin 150030, China
| | - Jianxing Wang
- College of Life Science, Northeast Agricultural University, Harbin 150030, China
| | - Yulai Wang
- College of Animal Science and Technology, Northeast Agricultural University, Harbin 150030, China
| | - Yiwen Chai
- College of Life Science, Northeast Agricultural University, Harbin 150030, China
| | - Haochen Li
- College of Life Science, Northeast Agricultural University, Harbin 150030, China
| | - Deyang Miao
- College of Life Science, Northeast Agricultural University, Harbin 150030, China
| | - Honggui Liu
- College of Animal Science and Technology, Northeast Agricultural University, Harbin 150030, China
| | - Jianhong Li
- College of Life Science, Northeast Agricultural University, Harbin 150030, China
| | - Jun Bao
- College of Life Science, Northeast Agricultural University, Harbin 150030, China
- College of Animal Science and Technology, Northeast Agricultural University, Harbin 150030, China
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6
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Kobayashi NHC, Farias SV, Luz DA, Machado-Ferraro KM, da Conceição BC, da Silveira CCM, Fernandes LMP, Cartágenes SDC, Ferreira VMM, Fontes-Júnior EA, Maia CDSF. Ketamine plus Alcohol: What We Know and What We Can Expect about This. Int J Mol Sci 2022; 23:ijms23147800. [PMID: 35887148 PMCID: PMC9323326 DOI: 10.3390/ijms23147800] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2022] [Revised: 06/23/2022] [Accepted: 06/27/2022] [Indexed: 01/02/2023] Open
Abstract
Drug abuse has become a public health concern. The misuse of ketamine, a psychedelic substance, has increased worldwide. In addition, the co-abuse with alcohol is frequently identified among misusers. Considering that ketamine and alcohol share several pharmacological targets, we hypothesize that the consumption of both psychoactive substances may synergically intensify the toxicological consequences, both under the effect of drugs available in body systems and during withdrawal. The aim of this review is to examine the toxicological mechanisms related to ketamine plus ethanol co-abuse, as well the consequences on cardiorespiratory, digestive, urinary, and central nervous systems. Furthermore, we provide a comprehensive discussion about the probable sites of shared molecular mechanisms that may elicit additional hazardous effects. Finally, we highlight the gaps of knowledge in this area, which deserves further research.
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Affiliation(s)
- Natalia Harumi Correa Kobayashi
- Laboratory of Pharmacology of Inflammation and Behavior, Faculty of Pharmacy, Institute of Health Science, Federal University of Pará, Belém 66075110, PA, Brazil; (N.H.C.K.); (S.V.F.); (D.A.L.); (K.M.M.-F.); (B.C.d.C.); (C.C.M.d.S.); (L.M.P.F.); (S.d.C.C.); (E.A.F.-J.)
| | - Sarah Viana Farias
- Laboratory of Pharmacology of Inflammation and Behavior, Faculty of Pharmacy, Institute of Health Science, Federal University of Pará, Belém 66075110, PA, Brazil; (N.H.C.K.); (S.V.F.); (D.A.L.); (K.M.M.-F.); (B.C.d.C.); (C.C.M.d.S.); (L.M.P.F.); (S.d.C.C.); (E.A.F.-J.)
| | - Diandra Araújo Luz
- Laboratory of Pharmacology of Inflammation and Behavior, Faculty of Pharmacy, Institute of Health Science, Federal University of Pará, Belém 66075110, PA, Brazil; (N.H.C.K.); (S.V.F.); (D.A.L.); (K.M.M.-F.); (B.C.d.C.); (C.C.M.d.S.); (L.M.P.F.); (S.d.C.C.); (E.A.F.-J.)
| | - Kissila Márvia Machado-Ferraro
- Laboratory of Pharmacology of Inflammation and Behavior, Faculty of Pharmacy, Institute of Health Science, Federal University of Pará, Belém 66075110, PA, Brazil; (N.H.C.K.); (S.V.F.); (D.A.L.); (K.M.M.-F.); (B.C.d.C.); (C.C.M.d.S.); (L.M.P.F.); (S.d.C.C.); (E.A.F.-J.)
| | - Brenda Costa da Conceição
- Laboratory of Pharmacology of Inflammation and Behavior, Faculty of Pharmacy, Institute of Health Science, Federal University of Pará, Belém 66075110, PA, Brazil; (N.H.C.K.); (S.V.F.); (D.A.L.); (K.M.M.-F.); (B.C.d.C.); (C.C.M.d.S.); (L.M.P.F.); (S.d.C.C.); (E.A.F.-J.)
| | - Cinthia Cristina Menezes da Silveira
- Laboratory of Pharmacology of Inflammation and Behavior, Faculty of Pharmacy, Institute of Health Science, Federal University of Pará, Belém 66075110, PA, Brazil; (N.H.C.K.); (S.V.F.); (D.A.L.); (K.M.M.-F.); (B.C.d.C.); (C.C.M.d.S.); (L.M.P.F.); (S.d.C.C.); (E.A.F.-J.)
| | - Luanna Melo Pereira Fernandes
- Laboratory of Pharmacology of Inflammation and Behavior, Faculty of Pharmacy, Institute of Health Science, Federal University of Pará, Belém 66075110, PA, Brazil; (N.H.C.K.); (S.V.F.); (D.A.L.); (K.M.M.-F.); (B.C.d.C.); (C.C.M.d.S.); (L.M.P.F.); (S.d.C.C.); (E.A.F.-J.)
| | - Sabrina de Carvalho Cartágenes
- Laboratory of Pharmacology of Inflammation and Behavior, Faculty of Pharmacy, Institute of Health Science, Federal University of Pará, Belém 66075110, PA, Brazil; (N.H.C.K.); (S.V.F.); (D.A.L.); (K.M.M.-F.); (B.C.d.C.); (C.C.M.d.S.); (L.M.P.F.); (S.d.C.C.); (E.A.F.-J.)
| | - Vânia Maria Moraes Ferreira
- Laboratory of Psychobiology, Psychology Institute, University of Brasília, Campus Universitário Darcy Ribeiro—Asa Norte, Brasília 70910900, DF, Brazil;
| | - Enéas Andrade Fontes-Júnior
- Laboratory of Pharmacology of Inflammation and Behavior, Faculty of Pharmacy, Institute of Health Science, Federal University of Pará, Belém 66075110, PA, Brazil; (N.H.C.K.); (S.V.F.); (D.A.L.); (K.M.M.-F.); (B.C.d.C.); (C.C.M.d.S.); (L.M.P.F.); (S.d.C.C.); (E.A.F.-J.)
| | - Cristiane do Socorro Ferraz Maia
- Laboratory of Pharmacology of Inflammation and Behavior, Faculty of Pharmacy, Institute of Health Science, Federal University of Pará, Belém 66075110, PA, Brazil; (N.H.C.K.); (S.V.F.); (D.A.L.); (K.M.M.-F.); (B.C.d.C.); (C.C.M.d.S.); (L.M.P.F.); (S.d.C.C.); (E.A.F.-J.)
- Correspondence: ; Tel.: +55-91-3201-7201
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7
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p-Coumaric acid mitigates passive avoidance memory and hippocampal synaptic plasticity impairments in aluminum chloride-induced Alzheimer's disease rat model. J Funct Foods 2022. [DOI: 10.1016/j.jff.2022.105117] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
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8
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Ozkan A, Aslan MA, Sinen O, Munzuroglu M, Derin N, Parlak H, Bulbul M, Agar A. Effects of adropin on learning and memory in rats tested in the Morris water maze. Hippocampus 2021; 32:253-263. [PMID: 34971006 DOI: 10.1002/hipo.23403] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2021] [Revised: 11/19/2021] [Accepted: 12/20/2021] [Indexed: 11/06/2022]
Abstract
Adropin is a secreted peptide, which is composed of 43 amino acids and shows an effective role in regulating energy metabolism and insulin resistance. Motor coordination and locomotor activity were improved by adropin in the cerebellum. However, it is not known whether adropin administration has an effect on spatial learning and memory. In this study, we investigated the effect of adropin on spatial learning and memory and characterized the biochemical properties of adropin in the hippocampus. Thirty male Sprague-Dawley rats were randomly divided into two groups as control and adropin groups. The control group received 0.9% NaCl intracerebroventricular for 6 days, while the adropin groups received 1 nmol of adropin dissolved in 0.9% NaCl (for 6 days). The Morris water maze, Y maze, and object location recognition tests were performed to evaluate learning and memory. Also, the locomotor activity tests were measured to assess the motor function. The expression of Akt, phospho-Akt, CREB, phospho-CREB, Erk1/2, phospho-Erk1/2, glycogen synthase kinase 3 β (GSK3β), phospho-GSK3β, brain-derived neurotrophic factor (BDNF), and N-methyl-d-aspartate receptor NR2B subunit were determined in the hippocampal tissues by using western blot. Behavior tests showed that adropin significantly increase spatial memory performance. Meanwhile, the western blot analyses revealed that the phosphorylated form of the Akt and CREB were enhanced with adropin administration in the hippocampus. Also, the expression of BDNF showed an enhancement in adropin group in comparison to the control group. In conclusion, we have shown for the first time that adropin exerts its enhancing effect on spatial memory capacity through Akt/CREB/BDNF signaling pathways.
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Affiliation(s)
- Ayse Ozkan
- Department of Physiology, Faculty of Medicine, Akdeniz University, Antalya, Turkey
| | - Mutay Aydin Aslan
- Department of Medical Biochemistry, Faculty of Medicine, Akdeniz University, Antalya, Turkey
| | - Osman Sinen
- Department of Physiology, Faculty of Medicine, Akdeniz University, Antalya, Turkey
| | - Mustafa Munzuroglu
- Department of Biophysics, Faculty of Medicine, Akdeniz University, Antalya, Turkey
| | - Narin Derin
- Department of Biophysics, Faculty of Medicine, Akdeniz University, Antalya, Turkey
| | - Hande Parlak
- Department of Physiology, Faculty of Medicine, Akdeniz University, Antalya, Turkey
| | - Mehmet Bulbul
- Department of Physiology, Faculty of Medicine, Akdeniz University, Antalya, Turkey
| | - Aysel Agar
- Department of Physiology, Faculty of Medicine, Akdeniz University, Antalya, Turkey
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9
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He C, Ji J, Zhao X, Lei Y, Li H, Hao Y, Zhang S, Zhang J, Liu C, Nie J, Niu Q. The Role of PKC in Regulating NMDARs in Aluminum-Induced Learning and Memory Impairment in Rats. Neurotox Res 2021; 39:2042-2055. [PMID: 34499332 DOI: 10.1007/s12640-021-00407-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2021] [Revised: 07/28/2021] [Accepted: 08/30/2021] [Indexed: 01/27/2023]
Abstract
Aluminum is a widespread environmental neurotoxicant that can induce Alzheimer's disease (AD)-like damage, such as neuronal injury and impairment of learning and memory. Several studies have shown that aluminum could reduce the synaptic plasticity, but its molecular mechanism remains unclear. In this study, rats were treated with aluminum maltol (Al(mal)3) to establish a toxic animal model and PMA was used to interfere with the expression of PKC. The Morris water maze and open field test were used to investigate the behavioral changes of the rats. Western blotting and RT-PCR were used to detect the expression levels of NMDAR subunits, PKC and CaMKII. The results showed that Al(mal)3 damaged learning and memory function and reduced anxiety in rats. During this process, the expression of PKC was downregulated and it inhibited the expression of NMDARs through the phosphorylation of CaMKII.
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Affiliation(s)
- Chanting He
- Department of Occupational Health, School of Public Health, Shanxi Medical University, Taiyuan, 030001, Shanxi, China
- Key Lab of Environmental Hazard & Health of Shanxi Province, Shanxi Medical University, Taiyuan, 030001, Shanxi, China
- Key Lab of Cellular Physiology of Education Ministry, Shanxi Medical University, Taiyuan, 030001, Shanxi, China
- Department of Anatomy, Shanxi Medical University, Taiyuan, 030001, Shanxi, China
| | - Jingjing Ji
- Fenyang College, Shanxi Medical University, Fenyang, 032200, Shanxi, China
| | - Xiaoyan Zhao
- Department of Occupational Health, School of Public Health, Shanxi Medical University, Taiyuan, 030001, Shanxi, China
| | - Yang Lei
- Department of Occupational Health, School of Public Health, Shanxi Medical University, Taiyuan, 030001, Shanxi, China
| | - Huan Li
- Department of Occupational Health, School of Public Health, Shanxi Medical University, Taiyuan, 030001, Shanxi, China
| | - Yanxia Hao
- Department of Occupational Health, School of Public Health, Shanxi Medical University, Taiyuan, 030001, Shanxi, China
| | - Shuhui Zhang
- Department of Occupational Health, School of Public Health, Shanxi Medical University, Taiyuan, 030001, Shanxi, China
| | - Jingsi Zhang
- Department of Occupational Health, School of Public Health, Shanxi Medical University, Taiyuan, 030001, Shanxi, China
| | - Chengjuan Liu
- Department of Occupational Health, School of Public Health, Shanxi Medical University, Taiyuan, 030001, Shanxi, China
| | - Jisheng Nie
- Department of Occupational Health, School of Public Health, Shanxi Medical University, Taiyuan, 030001, Shanxi, China.
- Key Lab of Environmental Hazard & Health of Shanxi Province, Shanxi Medical University, Taiyuan, 030001, Shanxi, China.
- Key Lab of Cellular Physiology of Education Ministry, Shanxi Medical University, Taiyuan, 030001, Shanxi, China.
| | - Qiao Niu
- Department of Occupational Health, School of Public Health, Shanxi Medical University, Taiyuan, 030001, Shanxi, China.
- Key Lab of Environmental Hazard & Health of Shanxi Province, Shanxi Medical University, Taiyuan, 030001, Shanxi, China.
- Key Lab of Cellular Physiology of Education Ministry, Shanxi Medical University, Taiyuan, 030001, Shanxi, China.
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10
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Prowse N, Hayley S. Microglia and BDNF at the crossroads of stressor related disorders: Towards a unique trophic phenotype. Neurosci Biobehav Rev 2021; 131:135-163. [PMID: 34537262 DOI: 10.1016/j.neubiorev.2021.09.018] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2021] [Revised: 09/08/2021] [Accepted: 09/08/2021] [Indexed: 12/16/2022]
Abstract
Stressors ranging from psychogenic/social to neurogenic/injury to systemic/microbial can impact microglial inflammatory processes, but less is known regarding their effects on trophic properties of microglia. Recent studies do suggest that microglia can modulate neuronal plasticity, possibly through brain derived neurotrophic factor (BDNF). This is particularly important given the link between BDNF and neuropsychiatric and neurodegenerative pathology. We posit that certain activated states of microglia play a role in maintaining the delicate balance of BDNF release onto neuronal synapses. This focused review will address how different "activators" influence the expression and release of microglial BDNF and address the question of tropomyosin receptor kinase B (TrkB) expression on microglia. We will then assess sex-based differences in microglial function and BDNF expression, and how microglia are involved in the stress response and related disorders such as depression. Drawing on research from a variety of other disorders, we will highlight challenges and opportunities for modulators that can shift microglia to a "trophic" phenotype with a view to potential therapeutics relevant for stressor-related disorders.
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Affiliation(s)
- Natalie Prowse
- Department of Neuroscience, Carleton University, Ottawa, ON K1S 5B6, Canada.
| | - Shawn Hayley
- Department of Neuroscience, Carleton University, Ottawa, ON K1S 5B6, Canada.
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11
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Sun W, Cheng H, Yang Y, Tang D, Li X, An L. Requirements of Postnatal proBDNF in the Hippocampus for Spatial Memory Consolidation and Neural Function. Front Cell Dev Biol 2021; 9:678182. [PMID: 34336832 PMCID: PMC8319730 DOI: 10.3389/fcell.2021.678182] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2021] [Accepted: 06/03/2021] [Indexed: 11/17/2022] Open
Abstract
Mature brain-derived neurotrophic factor (BDNF) and its downstream signaling pathways have been implicated in regulating postnatal development and functioning of rodent brain. However, the biological role of its precursor pro-brain-derived neurotrophic factor (proBDNF) in the postnatal brain remains unknown. The expression of hippocampal proBDNF was blocked in postnatal weeks, and multiple behavioral tests, Western blot and morphological techniques, and neural recordings were employed to investigate how proBDNF played a role in spatial cognition in adults. The peak expression and its crucial effects were found in the fourth but not in the second or eighth postnatal week. Blocking proBDNF expression disrupted spatial memory consolidation rather than learning or memory retrieval. Structurally, blocking proBDNF led to the reduction in spine density and proportion of mature spines. Although blocking proBDNF did not affect N-methyl-D-aspartate (NMDA) receptor (NMDAR) and α-amino-3-hydroxy-5-methyl-4-isoxazolepropionic acid receptor (AMPAR) subunits, the learning-induced phosphorylation of the GluN2B subunit level declined significantly. Functionally, paired-pulse facilitation, post-low-frequency stimulation (LFS) transiently enhanced depression, and GluN2B-dependent short-lasting long-term depression in the Schaffer collateral-CA1 pathway were weakened. The firing rate of pyramidal neurons was significantly suppressed around the target region during the memory test. Furthermore, the activation of GluN2B-mediated signaling could effectively facilitate neural function and mitigate memory impairment. The findings were consistent with the hypothesis that postnatal proBDNF played an essential role in synaptic and cognitive functions.
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Affiliation(s)
- Wei Sun
- Behavioral Neuroscience Laboratory, The First Affiliated Hospital of Guizhou University of Traditional Chinese Medicine, Guiyang, China.,Department of Pediatric, The First Affiliated Hospital, Guizhou University of Traditional Chinese Medicine, Guiyang, China
| | - Hong Cheng
- Behavioral Neuroscience Laboratory, The First Affiliated Hospital of Guizhou University of Traditional Chinese Medicine, Guiyang, China.,Department of Neurology, Guizhou University of Traditional Chinese Medicine, Guiyang, China
| | - Yang Yang
- Department of Pediatric, The First Affiliated Hospital, Guizhou University of Traditional Chinese Medicine, Guiyang, China
| | - Dongxin Tang
- Behavioral Neuroscience Laboratory, The First Affiliated Hospital of Guizhou University of Traditional Chinese Medicine, Guiyang, China
| | - Xiaolian Li
- Department of Neurology, Jinan Geriatric Hospital, Jinan, China
| | - Lei An
- Behavioral Neuroscience Laboratory, The First Affiliated Hospital of Guizhou University of Traditional Chinese Medicine, Guiyang, China.,Department of Pediatric, The First Affiliated Hospital, Guizhou University of Traditional Chinese Medicine, Guiyang, China.,Department of Neurology, Guizhou University of Traditional Chinese Medicine, Guiyang, China.,Department of Physiology, University of Saskatchewan, Saskatoon, SK, Canada
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12
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Sun GC, Lee YJ, Lee YC, Yu HF, Wang DC. Exercise prevents the impairment of learning and memory in prenatally phthalate-exposed male rats by improving the expression of plasticity-related proteins. Behav Brain Res 2021; 413:113444. [PMID: 34245761 DOI: 10.1016/j.bbr.2021.113444] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2021] [Revised: 06/27/2021] [Accepted: 06/30/2021] [Indexed: 12/14/2022]
Abstract
Regular exercise has been identified to facilitate neuroplasticity that maximize functional outcome after brain injuries. Brain-derived neurotrophic factor (BDNF) has emerged as a key facilitator of neuroplasticity after exercise. The activity-regulated cytoskeleton associated protein (Arc) is induced by BDNF and N-methyl-d-aspartic acid receptor (NMDAR), contributing to functional modification of neuroplasticity in the hippocampus. Meanwhile, early-life exposure to neuroendocrine disruptor di-(2-ethylhexyl)-phthalate (DEHP) is a risk factor for behavioral deficits, but the mechanisms responsible for DEHP-induced neurotoxicity are not well understood. The purpose of this study is to investigate whether hippocampal Arc expression is impaired by DEHP exposure and to examine the protective role of exercise in the prenatally DEHP-exposed male rats. Sprague Dawley dams were fed with vehicle or DEHP during gestation. The male offspring were trained to treadmill running for 5 weeks followed by examination of behavioral and biochemical outcomes. The results showed that DEHP-exposed rats exhibited impairment of spatial learning and memory as well as down-regulations of BDNF, NMDAR, Arc, and synaptophysin. Importantly, aerobic exercise during childhood-adolescence prevented the impairment of learning and memory by recovering the expressions of BDNF, NMDAR, Arc, and synaptophysin. These findings suggest that exercise may provide beneficial effects on ameliorating the impairment of neuroplasticity in the prenatally DEHP-exposed male rats at late adolescence.
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Affiliation(s)
- Gwo-Ching Sun
- Department of Anesthesiology, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan; Department of Anesthesiology, School of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan.
| | - Yi-Ju Lee
- Department of Sports Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan.
| | - Yi-Ching Lee
- Department of Food and Beverage Services, Tainan University of Technology, Tainan, Taiwan.
| | - Hsien-Fu Yu
- Department of Sports Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan.
| | - Dean-Chuan Wang
- Department of Sports Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan; Department of Physiology, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan.
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13
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Sun W, Yang Y, Chen X, Cheng Y, Li X, An L. Light Promotes Neural Correlates of Fear Memory via Enhancing Brain-Derived Neurotrophic Factor (BDNF) Expression in the Prelimbic Cortex. ACS Chem Neurosci 2021; 12:1802-1810. [PMID: 33961393 DOI: 10.1021/acschemneuro.1c00081] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023] Open
Abstract
Exposure to light has been shown to enhance vigilance and improve working memory, possibly due to changes in prefrontal function. Ample evidence supports the critical role of prefrontal cortex (PFC) in fear memory performance. However, the effects of light on memory processing and its potential mechanisms remain unclear. Here, through rats exposure conditioned to light at different memory phases, we sought evidence for the influences by employing behavioral tests, pharmacological infusions, immunoblotting, and electrophysiological recording. Exposure to light immediately following conditioning of 30 min or longer could effectively improve consolidation of fear memory without altering short-term memory or upgrading the original fear. The absence of significant freezing during baseline and intertrial interval periods ruled out the possibility of a general induction of freezing by light. Meanwhile, rats exposed to light in homecages or conditioning chambers exhibited a similar memory phenotype, indicating that light specifically enhanced the fear stimulus rather than the contextual environment. Furthermore, light exposure elevated the training-induced brain-derived neurotrophic factor (BDNF) expression in the prelimbic, but not infralimbic, subregion of the PFC. Moreover, the BDNF-TrkB pathway, but not the BDNF-p75NTR pathway, was involved in light-mediated fear memory. The enhancement in BDNF activity effectively facilitated firing correlates of prelimbic pyramidal neurons but not fast-spiking interneurons. Blocking the training-induced BDNF by its antibody abolished the effects of light on neural function and fear memory. Therefore, our findings indicate that light enhances training-induced BDNF expression that promotes the neural correlate of memory function.
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Affiliation(s)
- Wei Sun
- Behavioral Neuroscience Laboratory, The First Affiliated Hospital of Guizhou University of Traditional Chinese Medicine, Guiyang 550001, China
- Department of Pediatric, The First Affiliated Hospital of Guizhou University of Traditional Chinese Medicine, Guiyang 550001, China
| | - Yang Yang
- Department of Pediatric, The First Affiliated Hospital of Guizhou University of Traditional Chinese Medicine, Guiyang 550001, China
| | - Xiao Chen
- Behavioral Neuroscience Laboratory, The First Affiliated Hospital of Guizhou University of Traditional Chinese Medicine, Guiyang 550001, China
| | - Yan Cheng
- Behavioral Neuroscience Laboratory, The First Affiliated Hospital of Guizhou University of Traditional Chinese Medicine, Guiyang 550001, China
- Department of Pediatric, The First Affiliated Hospital of Guizhou University of Traditional Chinese Medicine, Guiyang 550001, China
| | - Xiaolian Li
- Department of Neurology, Jinan Rehabilitation Hospital, Jinan 250013, China
| | - Lei An
- Behavioral Neuroscience Laboratory, The First Affiliated Hospital of Guizhou University of Traditional Chinese Medicine, Guiyang 550001, China
- Department of Pediatric, The First Affiliated Hospital of Guizhou University of Traditional Chinese Medicine, Guiyang 550001, China
- Department of Neurology, The First Affiliated Hospital of Guizhou University of Traditional Chinese Medicine, Guiyang 550001, China
- Department of Physiology, University of Saskatchewan, Saskatoon S7N 5E5, Canada
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14
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Cebul ER, McLachlan IG, Heiman MG. Dendrites with specialized glial attachments develop by retrograde extension using SAX-7 and GRDN-1. Development 2020; 147:dev.180448. [PMID: 31988188 DOI: 10.1242/dev.180448] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2019] [Accepted: 01/07/2020] [Indexed: 12/18/2022]
Abstract
Dendrites develop elaborate morphologies in concert with surrounding glia, but the molecules that coordinate dendrite and glial morphogenesis are mostly unknown. C. elegans offers a powerful model for identifying such factors. Previous work in this system examined dendrites and glia that develop within epithelia, similar to mammalian sense organs. Here, we focus on the neurons BAG and URX, which are not part of an epithelium but instead form membranous attachments to a single glial cell at the nose, reminiscent of dendrite-glia contacts in the mammalian brain. We show that these dendrites develop by retrograde extension, in which the nascent dendrite endings anchor to the presumptive nose and then extend by stretching during embryo elongation. Using forward genetic screens, we find that dendrite development requires the adhesion protein SAX-7/L1CAM and the cytoplasmic protein GRDN-1/CCDC88C to anchor dendrite endings at the nose. SAX-7 acts in neurons and glia, while GRDN-1 acts in glia to non-autonomously promote dendrite extension. Thus, this work shows how glial factors can help to shape dendrites, and identifies a novel molecular mechanism for dendrite growth by retrograde extension.
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Affiliation(s)
- Elizabeth R Cebul
- Department of Genetics, Blavatnik Institute, Harvard Medical School and Boston Children's Hospital, Boston, MA 02115, USA
| | - Ian G McLachlan
- Department of Genetics, Blavatnik Institute, Harvard Medical School and Boston Children's Hospital, Boston, MA 02115, USA
| | - Maxwell G Heiman
- Department of Genetics, Blavatnik Institute, Harvard Medical School and Boston Children's Hospital, Boston, MA 02115, USA
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15
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Sleep Deprivation Disrupts Acquisition of Contextual Fear Extinction by Affecting Circadian Oscillation of Hippocampal-Infralimbic proBDNF. eNeuro 2019; 6:ENEURO.0165-19.2019. [PMID: 31585927 PMCID: PMC6800296 DOI: 10.1523/eneuro.0165-19.2019] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2019] [Revised: 09/22/2019] [Accepted: 09/27/2019] [Indexed: 12/25/2022] Open
Abstract
Extensive evidence showed that mature brain-derived neurotrophic factor (mBDNF) levels displayed a circadian pattern. Circadian disruption, for example, sleep deprivation (SD), induced functional and behavioral deficits. However, compared with that of mature form, the biological role of the pro-peptide, proBDNF, was poorly understood. Here, we found that proBDNF was expressed under circadian rhythm in the ventral hippocampus (vHPC). SD rats exhibited deficits in acquisition of conditioned extinction and damped rhythmicity in vHPC proBDNF activity that were accompanied by SD between zeitgeber time (ZT)0 and ZT4, but not the late stage of sleep period. Furthermore, SD affected fear extinction through vHPC-IL proBDNF signaling, which was associated with NR2B subunits of NMDA receptors. More importantly, infusion of proBDNF could mitigate SD-induced abnormal neural activity, by suppressing the enhanced basal firing rate of IL-RS and elevating the depressed neural response that evoked by acquisition of conditioned extinction. Therefore, this finding provided the first evidence that circadian oscillation of vHPC proBDNF activity contributed to the effects of SD on acquisition of conditioned fear extinction, and suggested a new therapeutic target to reverse the cognitive deficits in sleep-related mental disorder, such as post-traumatic stress disorder (PTSD).
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16
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French T, Düsedau HP, Steffen J, Biswas A, Ahmed N, Hartmann S, Schüler T, Schott BH, Dunay IR. Neuronal impairment following chronic Toxoplasma gondii infection is aggravated by intestinal nematode challenge in an IFN-γ-dependent manner. J Neuroinflammation 2019; 16:159. [PMID: 31352901 PMCID: PMC6661741 DOI: 10.1186/s12974-019-1539-8] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2019] [Accepted: 07/09/2019] [Indexed: 02/06/2023] Open
Abstract
Background It has become increasingly evident that the immune and nervous systems are closely intertwined, relying on one another during regular homeostatic conditions. Prolonged states of imbalance between neural and immune homeostasis, such as chronic neuroinflammation, are associated with a higher risk for neural damage. Toxoplasma gondii is a highly successful neurotropic parasite causing persistent subclinical neuroinflammation, which is associated with psychiatric and neurodegenerative disorders. Little is known, however, by what means neuroinflammation and the associated neural impairment can be modulated by peripheral inflammatory processes. Methods Expression of immune and synapse-associated genes was assessed via quantitative real-time PCR to investigate how T. gondii infection-induced chronic neuroinflammation and associated neuronal alterations can be reshaped by a subsequent acute intestinal nematode co-infection. Immune cell subsets were characterized via flow cytometry in the brain of infected mice. Sulfadiazine and interferon-γ-neutralizing antibody were applied to subdue neuroinflammation. Results Neuroinflammation induced by T. gondii infection of mice was associated with increased microglia activation, recruitment of immune cells into the brain exhibiting Th1 effector functions, and enhanced production of Th1 and pro-inflammatory molecules (IFN-γ, iNOS, IL-12, TNF, IL-6, and IL-1β) following co-infection with Heligmosomoides polygyrus. The accelerated cerebral Th1 immune response resulted in enhanced T. gondii removal but exacerbated the inflammation-related decrease of synapse-associated gene expression. Synaptic proteins EAAT2 and GABAAα1, which are involved in the excitation/inhibition balance in the CNS, were affected in particular. These synaptic alterations were partially recovered by reducing neuroinflammation indirectly via antiparasitic treatment and especially by application of IFN-γ-neutralizing antibody. Impaired iNOS expression following IFN-γ neutralization directly affected EAAT2 and GABAAα1 signaling, thus contributing to the microglial regulation of neurons. Besides, reduced CD36, TREM2, and C1qa gene expression points toward inflammation induced synaptic pruning as a fundamental mechanism. Conclusion Our results suggest that neuroimmune responses following chronic T. gondii infection can be modulated by acute enteric nematode co-infection. While consecutive co-infection promotes parasite elimination in the CNS, it also adversely affects gene expression of synaptic proteins, via an IFN-γ-dependent manner. Electronic supplementary material The online version of this article (10.1186/s12974-019-1539-8) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Timothy French
- Institute of Inflammation and Neurodegeneration, Medizinische Fakultät, Otto-von-Guericke-University Magdeburg, Leipziger Straße 44, 39120, Magdeburg, Germany
| | - Henning Peter Düsedau
- Institute of Inflammation and Neurodegeneration, Medizinische Fakultät, Otto-von-Guericke-University Magdeburg, Leipziger Straße 44, 39120, Magdeburg, Germany
| | - Johannes Steffen
- Institute of Inflammation and Neurodegeneration, Medizinische Fakultät, Otto-von-Guericke-University Magdeburg, Leipziger Straße 44, 39120, Magdeburg, Germany
| | - Aindrila Biswas
- Institute of Inflammation and Neurodegeneration, Medizinische Fakultät, Otto-von-Guericke-University Magdeburg, Leipziger Straße 44, 39120, Magdeburg, Germany
| | - Norus Ahmed
- Department of Veterinary Medicine, Institute of Immunology, Free University Berlin, Berlin, Germany
| | - Susanne Hartmann
- Department of Veterinary Medicine, Institute of Immunology, Free University Berlin, Berlin, Germany
| | - Thomas Schüler
- Institute of Molecular and Clinical Immunology, Otto-von-Guericke-University Magdeburg, Magdeburg, Germany
| | - Björn H Schott
- Leibniz Institute of Neurobiology, Magdeburg, Germany.,Center for Behavioral Brain Sciences, Magdeburg, Germany.,Department of Psychiatry and Psychotherapy, University Medicine Göttingen, Göttingen, Germany
| | - Ildiko Rita Dunay
- Institute of Inflammation and Neurodegeneration, Medizinische Fakultät, Otto-von-Guericke-University Magdeburg, Leipziger Straße 44, 39120, Magdeburg, Germany. .,Center for Behavioral Brain Sciences, Magdeburg, Germany.
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17
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A Single Session of Aerobic Exercise Mediates Plasticity-Related Phosphorylation in both the Rat Motor Cortex and Hippocampus. Neuroscience 2019; 412:160-174. [PMID: 31181370 DOI: 10.1016/j.neuroscience.2019.05.051] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2019] [Revised: 05/23/2019] [Accepted: 05/24/2019] [Indexed: 12/23/2022]
Abstract
A single session of aerobic exercise may offer one means to "prime" motor regions to be more receptive to the acquisition of a motor skill; however, the mechanisms whereby this priming may occur are not clear. One possible explanation may be related to the post-translational modification of plasticity-related receptors and their associated intracellular signaling molecules, given that these proteins are integral to the development of synaptic plasticity. In particular, phosphorylation governs the biophysical properties (e.g., Ca2+ conductance) and the migratory patterns (i.e., trafficking) of plasticity-related receptors by altering the relative density of specific receptor subunits at synapses. We hypothesized that a single session of exercise would alter the subunit phosphorylation of plasticity-related receptors (AMPA receptors, NMDA receptors) and signaling molecules (PKA, CaMKII) in a manner that would serve to prime motor cortex. Young, male Sprague-Dawley rats (n = 24) were assigned to either exercise (Moderate, Exhaustion), or non-exercising (Sedentary) groups. Immediately following a single session of treadmill exercise, whole tissue homogenates were prepared from both the motor cortex and hippocampus. We observed a robust (1.2-2.0× greater than sedentary) increase in tyrosine phosphorylation of AMPA (GluA1,2) and NMDA (GluN2A,B) receptor subunits, and a clear indication that exercise preferentially affects pPKA over pCaMKII. The changes were found, specifically, following moderate, but not maximal, acute aerobic exercise in both motor cortex and hippocampus. Given the requirement for these proteins during the early phases of plasticity induction, the possibility exists that exercise-induced priming may occur by altering the phosphorylation of plasticity-related proteins.
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18
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Miranda M, Kent BA, Morici JF, Gallo F, Saksida LM, Bussey TJ, Weisstaub N, Bekinschtein P. NMDA receptors and BDNF are necessary for discrimination of overlapping spatial and non-spatial memories in perirhinal cortex and hippocampus. Neurobiol Learn Mem 2018; 155:337-343. [PMID: 30172952 DOI: 10.1016/j.nlm.2018.08.019] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2018] [Revised: 07/03/2018] [Accepted: 08/29/2018] [Indexed: 01/06/2023]
Abstract
Successful memory involves not only remembering information over time but also keeping memories distinct and less confusable. Discrimination of overlapping representations has been investigated in the dentate gyrus (DG) of the hippocampus and largely in the perirhinal cortex (Prh). In particular, the DG was shown to be important for discrimination of overlapping spatial memories and Prh was shown to be important for discrimination of overlapping object memories. In the present study, we used both a DG-dependent and a Prh-dependent task and manipulated the load of similarity between either spatial or object stimuli during information encoding. We showed that N-methyl-D-aspartate-type glutamate receptors (NMDAr) and BDNF participate of the same cellular network during consolidation of both overlapping object and spatial memories in the Prh and DG, respectively. This argues in favor of conserved cellular mechanisms across regions despite anatomical differences.
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Affiliation(s)
- Magdalena Miranda
- Laboratory of Memory Research and Molecular Cognition, Consejo Nacional de Investigaciones Científicas y Técnicas - Fundación INECO - Universidad Favaloro, Buenos Aires, Argentina
| | - Brianne A Kent
- Department of Medicine, University of British Columbia, Vancouver, Canada
| | - Juan Facundo Morici
- Laboratory of Memory Research and Molecular Cognition, Consejo Nacional de Investigaciones Científicas y Técnicas - Fundación INECO - Universidad Favaloro, Buenos Aires, Argentina
| | - Francisco Gallo
- Laboratory of Memory Research and Molecular Cognition, Consejo Nacional de Investigaciones Científicas y Técnicas - Fundación INECO - Universidad Favaloro, Buenos Aires, Argentina
| | - Lisa M Saksida
- Department of Psychology and MRC/Wellcome Trust Behavioural and Clinical Neuroscience Institute, University of Cambridge, Downing Street, Cambridge CB2 3EB, UK; Molecular Medicine Research Laboratories, Robarts Research Institute, Department of Physiology and Pharmacology, Schulich School of Medicine & Dentistry, Western University, London, ON, Canada; The Brain and Mind Institute, Western University, London, ON, Canada
| | - Timothy J Bussey
- Department of Psychology and MRC/Wellcome Trust Behavioural and Clinical Neuroscience Institute, University of Cambridge, Downing Street, Cambridge CB2 3EB, UK; Molecular Medicine Research Laboratories, Robarts Research Institute, Department of Physiology and Pharmacology, Schulich School of Medicine & Dentistry, Western University, London, ON, Canada; The Brain and Mind Institute, Western University, London, ON, Canada
| | - Noelia Weisstaub
- Laboratory of Memory Research and Molecular Cognition, Consejo Nacional de Investigaciones Científicas y Técnicas - Fundación INECO - Universidad Favaloro, Buenos Aires, Argentina
| | - Pedro Bekinschtein
- Laboratory of Memory Research and Molecular Cognition, Consejo Nacional de Investigaciones Científicas y Técnicas - Fundación INECO - Universidad Favaloro, Buenos Aires, Argentina.
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19
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Li C, Li M, Yu H, Shen X, Wang J, Sun X, Wang Q, Wang C. Neuropeptide VGF C-Terminal Peptide TLQP-62 Alleviates Lipopolysaccharide-Induced Memory Deficits and Anxiety-like and Depression-like Behaviors in Mice: The Role of BDNF/TrkB Signaling. ACS Chem Neurosci 2017; 8:2005-2018. [PMID: 28594546 DOI: 10.1021/acschemneuro.7b00154] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Peripheral inflammatory responses affect central nervous system (CNS) function, manifesting in symptoms of memory deficits, depression, and anxiety. Previous studies have revealed that neuropeptide VGF (nonacronymic) C-terminal peptide TLQP-62 rapidly reinforces brain-derived neurotrophic factor (BDNF)/tropomyosin receptor kinase B (TrkB) signaling, regulating memory consolidation and antidepressant-like action. However, whether it is beneficial for lipopolysaccharide (LPS)-induced neuropsychiatric dysfunction in mice is unknown. Herein, we explored the involvement of BDNF/TrkB signaling and biochemical alterations in inflammatory or oxidative stress markers in the alleviating effects of TLQP-62 on LPS-induced neuropsychiatric dysfunction. The mice were treated with TLQP-62 (2 μg/side) via intracerebroventricular (i.c.v.) injection 1 h before LPS (0.5 mg/kg, i.p.) administration. Our results showed that a single treatment with LPS (0.5 mg/kg, i.p) is sufficient to produce recognition memory deficits (in the novel object recognition test), depression-like behavior (in the forced swim test and sucrose preference test), and anxiety-like behavior (in the elevated zero maze). However, pretreatment with TLQP-62 prevented LPS-induced behavioral dysfunction, neuroinflammatory, and oxidative responses. In addition, our results further demonstrated that a reduction in BDNF expression mediated by BDNF-shRNA lentivirus significantly blocked the effects of TLQP-62, suggesting the critical role of BDNF/TrkB signaling in the neuroprotective effects of TLQP-62 in the mice. In conclusion, TLQP-62 could be a therapeutic approach for neuropsychiatric disorders, which are closely associated with neuroinflammation and oxidative stress.
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Affiliation(s)
| | | | | | | | | | | | | | - Chuang Wang
- Li
Dak Sum Yip Yio Chin Kenneth Li Marine Biopharmaceutical Research
Center, Ningbo University, Ningbo 315211, China
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20
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BDNF Contributes to Spinal Long-Term Potentiation and Mechanical Hypersensitivity Via Fyn-Mediated Phosphorylation of NMDA Receptor GluN2B Subunit at Tyrosine 1472 in Rats Following Spinal Nerve Ligation. Neurochem Res 2017; 42:2712-2729. [DOI: 10.1007/s11064-017-2274-0] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2016] [Revised: 04/01/2017] [Accepted: 04/18/2017] [Indexed: 11/26/2022]
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