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Hilz EN, Gore AC. Sex-specific Effects of Endocrine-disrupting Chemicals on Brain Monoamines and Cognitive Behavior. Endocrinology 2022; 163:bqac128. [PMID: 35939362 PMCID: PMC9419695 DOI: 10.1210/endocr/bqac128] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/06/2022] [Indexed: 11/19/2022]
Abstract
The period of brain sexual differentiation is characterized by the development of hormone-sensitive neural circuits that govern the subsequent presentation of sexually dimorphic behavior in adulthood. Perturbations of hormones by endocrine-disrupting chemicals (EDCs) during this developmental period interfere with an organism's endocrine function and can disrupt the normative organization of male- or female-typical neural circuitry. This is well characterized for reproductive and social behaviors and their underlying circuitry in the hypothalamus and other limbic regions of the brain; however, cognitive behaviors are also sexually dimorphic, with their underlying neural circuitry potentially vulnerable to EDC exposure during critical periods of brain development. This review provides recent evidence for sex-specific changes to the brain's monoaminergic systems (dopamine, serotonin, norepinephrine) after developmental EDC exposure and relates these outcomes to sex differences in cognition such as affective, attentional, and learning/memory behaviors.
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Affiliation(s)
- Emily N Hilz
- Division of Pharmacology and Toxicology, The University of Texas at Austin, Austin, Texas, 78712, USA
| | - Andrea C Gore
- Correspondence: Andrea C. Gore, PhD, College of Pharmacy, The University of Texas at Austin, 107 W Dean Keeton St, Box C0875, Austin, TX, 78712, USA.
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2
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Zhou ZD, Saw WT, Ho PGH, Zhang ZW, Zeng L, Chang YY, Sun AXY, Ma DR, Wang HY, Zhou L, Lim KL, Tan EK. The role of tyrosine hydroxylase-dopamine pathway in Parkinson's disease pathogenesis. Cell Mol Life Sci 2022; 79:599. [PMID: 36409355 PMCID: PMC9678997 DOI: 10.1007/s00018-022-04574-x] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2022] [Revised: 09/26/2022] [Accepted: 09/27/2022] [Indexed: 11/22/2022]
Abstract
BACKGROUND Parkinson's disease (PD) is characterized by selective and progressive dopamine (DA) neuron loss in the substantia nigra and other brain regions, with the presence of Lewy body formation. Most PD cases are sporadic, whereas monogenic forms of PD have been linked to multiple genes, including Leucine kinase repeat 2 (LRRK2) and PTEN-induced kinase 1 (PINK1), two protein kinase genes involved in multiple signaling pathways. There is increasing evidence to suggest that endogenous DA and DA-dependent neurodegeneration have a pathophysiologic role in sporadic and familial PD. METHODS We generated patient-derived dopaminergic neurons and human midbrain-like organoids (hMLOs), transgenic (TG) mouse and Drosophila models, expressing both mutant and wild-type (WT) LRRK2 and PINK1. Using these models, we examined the effect of LRRK2 and PINK1 on tyrosine hydroxylase (TH)-DA pathway. RESULTS We demonstrated that PD-linked LRRK2 mutations were able to modulate TH-DA pathway, resulting in up-regulation of DA early in the disease which subsequently led to neurodegeneration. The LRRK2-induced DA toxicity and degeneration were abrogated by wild-type (WT) PINK1 (but not PINK1 mutations), and early treatment with a clinical-grade drug, α-methyl-L-tyrosine (α-MT), a TH inhibitor, was able to reverse the pathologies in human neurons and TG Drosophila models. We also identified opposing effects between LRRK2 and PINK1 on TH expression, suggesting that functional balance between these two genes may regulate the TH-DA pathway. CONCLUSIONS Our findings highlight the vital role of the TH-DA pathway in PD pathogenesis. LRRK2 and PINK1 have opposing effects on the TH-DA pathway, and its balance affects DA neuron survival. LRRK2 or PINK1 mutations can disrupt this balance, promoting DA neuron demise. Our findings provide support for potential clinical trials using TH-DA pathway inhibitors in early or prodromic PD.
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Affiliation(s)
- Zhi Dong Zhou
- National Neuroscience Institute, 11 Jalan Tan Tock Seng, Singapore, 308433 Singapore
- Duke-NUS Graduate Medical School, Signature Research Program in Neuroscience and Behavioural Disorders, 8 College Road, Singapore, 169857 Singapore
| | - Wuan Ting Saw
- National Neuroscience Institute, 11 Jalan Tan Tock Seng, Singapore, 308433 Singapore
| | - Patrick Ghim Hoe Ho
- National Neuroscience Institute, 11 Jalan Tan Tock Seng, Singapore, 308433 Singapore
| | - Zhi Wei Zhang
- National Neuroscience Institute, 11 Jalan Tan Tock Seng, Singapore, 308433 Singapore
| | - Li Zeng
- National Neuroscience Institute, 11 Jalan Tan Tock Seng, Singapore, 308433 Singapore
| | - Ya Yin Chang
- Duke-NUS Graduate Medical School, Signature Research Program in Neuroscience and Behavioural Disorders, 8 College Road, Singapore, 169857 Singapore
| | - Alfred Xu Yang Sun
- Duke-NUS Graduate Medical School, Signature Research Program in Neuroscience and Behavioural Disorders, 8 College Road, Singapore, 169857 Singapore
| | - Dong Rui Ma
- National Neuroscience Institute, 11 Jalan Tan Tock Seng, Singapore, 308433 Singapore
| | - Hong Yan Wang
- Duke-NUS Graduate Medical School, Signature Research Program in Neuroscience and Behavioural Disorders, 8 College Road, Singapore, 169857 Singapore
| | - Lei Zhou
- Ocular Proteomics Laboratory, Singapore Eye Research Institute, Singapore, 169856 Singapore
- Department of Ophthalmology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, 119077 Singapore
- Ophthalmology and Visual Sciences Academic Clinical Research Program, Duke-NUS Medical School, Singapore, 169857 Singapore
| | - Kah Leong Lim
- National Neuroscience Institute, 11 Jalan Tan Tock Seng, Singapore, 308433 Singapore
- Developmental of Stem Cell Biology and Regenerative Medicine, Lee Kong Chian School of Medicine, Nanyang Technological University, 11 Mandalay Road, Singapore, 308232 Singapore
| | - Eng-King Tan
- National Neuroscience Institute, 11 Jalan Tan Tock Seng, Singapore, 308433 Singapore
- Department of Neurology, Singapore General Hospital, National Neuroscience Institute, Outram Road, Singapore, 169608 Singapore
- Duke-NUS Graduate Medical School, Signature Research Program in Neuroscience and Behavioural Disorders, 8 College Road, Singapore, 169857 Singapore
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3
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Coelho NR, Pimpão AB, Correia MJ, Rodrigues TC, Monteiro EC, Morello J, Pereira SA. Pharmacological blockage of the AHR-CYP1A1 axis: a call for in vivo evidence. J Mol Med (Berl) 2021; 100:215-243. [PMID: 34800164 PMCID: PMC8605459 DOI: 10.1007/s00109-021-02163-2] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2021] [Revised: 10/27/2021] [Accepted: 11/03/2021] [Indexed: 01/21/2023]
Abstract
The aryl hydrocarbon receptor (AHR) is a ligand-activated transcription factor that can be activated by structurally diverse compounds arising from the environment and the microbiota and host metabolism. Expanding evidence has been shown that the modulation of the canonical pathway of AHR occurs during several chronic diseases and that its abrogation might be of clinical interest for metabolic and inflammatory pathological processes. However, most of the evidence on the pharmacological abrogation of the AHR-CYP1A1 axis has been reported in vitro, and therefore, guidance for in vivo studies is needed. In this review, we cover the state-of-the-art of the pharmacodynamic and pharmacokinetic properties of AHR antagonists and CYP1A1 inhibitors in different in vivo rodent (mouse or rat) models of disease. This review will serve as a road map for those researchers embracing this emerging therapeutic area targeting the AHR. Moreover, it is a timely opportunity as the first AHR antagonists have recently entered the clinical stage of drug development.
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Affiliation(s)
- N R Coelho
- CEDOC, NOVA Medical School, Universidade Nova de Lisboa, 1169-056, Lisboa, Portugal
| | - A B Pimpão
- CEDOC, NOVA Medical School, Universidade Nova de Lisboa, 1169-056, Lisboa, Portugal
| | - M J Correia
- CEDOC, NOVA Medical School, Universidade Nova de Lisboa, 1169-056, Lisboa, Portugal
| | - T C Rodrigues
- CEDOC, NOVA Medical School, Universidade Nova de Lisboa, 1169-056, Lisboa, Portugal
| | - E C Monteiro
- CEDOC, NOVA Medical School, Universidade Nova de Lisboa, 1169-056, Lisboa, Portugal
| | - J Morello
- CEDOC, NOVA Medical School, Universidade Nova de Lisboa, 1169-056, Lisboa, Portugal
| | - S A Pereira
- CEDOC, NOVA Medical School, Universidade Nova de Lisboa, 1169-056, Lisboa, Portugal.
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4
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The Role of AhR in the Hallmarks of Brain Aging: Friend and Foe. Cells 2021; 10:cells10102729. [PMID: 34685709 PMCID: PMC8534784 DOI: 10.3390/cells10102729] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2021] [Revised: 10/05/2021] [Accepted: 10/10/2021] [Indexed: 12/24/2022] Open
Abstract
In recent years, aryl hydrocarbon receptor (AhR), a ligand-activated transcription factor, has been considered to be involved in aging phenotypes across several species. This receptor is a highly conserved biosensor that is activated by numerous exogenous and endogenous molecules, including microbiota metabolites, to mediate several physiological and toxicological functions. Brain aging hallmarks, which include glial cell activation and inflammation, increased oxidative stress, mitochondrial dysfunction, and cellular senescence, increase the vulnerability of humans to various neurodegenerative diseases. Interestingly, many studies have implicated AhR signaling pathways in the aging process and longevity across several species. This review provides an overview of the impact of AhR pathways on various aging hallmarks in the brain and the implications for AhR signaling as a mechanism in regulating aging-related diseases of the brain. We also explore how the nature of AhR ligands determines the outcomes of several signaling pathways in brain aging processes.
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5
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Buck JM, Yu L, Knopik VS, Stitzel JA. DNA methylome perturbations: an epigenetic basis for the emergingly heritable neurodevelopmental abnormalities associated with maternal smoking and maternal nicotine exposure†. Biol Reprod 2021; 105:644-666. [PMID: 34270696 PMCID: PMC8444709 DOI: 10.1093/biolre/ioab138] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2021] [Revised: 06/29/2021] [Accepted: 07/14/2021] [Indexed: 11/13/2022] Open
Abstract
Maternal smoking during pregnancy is associated with an ensemble of neurodevelopmental consequences in children and therefore constitutes a pressing public health concern. Adding to this burden, contemporary epidemiological and especially animal model research suggests that grandmaternal smoking is similarly associated with neurodevelopmental abnormalities in grandchildren, indicative of intergenerational transmission of the neurodevelopmental impacts of maternal smoking. Probing the mechanistic bases of neurodevelopmental anomalies in the children of maternal smokers and the intergenerational transmission thereof, emerging research intimates that epigenetic changes, namely DNA methylome perturbations, are key factors. Altogether, these findings warrant future research to fully elucidate the etiology of neurodevelopmental impairments in the children and grandchildren of maternal smokers and underscore the clear potential thereof to benefit public health by informing the development and implementation of preventative measures, prophylactics, and treatments. To this end, the present review aims to encapsulate the burgeoning evidence linking maternal smoking to intergenerational epigenetic inheritance of neurodevelopmental abnormalities, to identify the strengths and weaknesses thereof, and to highlight areas of emphasis for future human and animal model research therein.
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Affiliation(s)
- Jordan M Buck
- Institute for Behavioral Genetics, University of Colorado Boulder, Boulder, CO, USA
- Department of Integrative Physiology, University of Colorado, Boulder, Boulder, CO, USA
| | - Li Yu
- Department of Human Development and Family Studies, Purdue University, West Lafayette, IN, USA
| | - Valerie S Knopik
- Department of Human Development and Family Studies, Purdue University, West Lafayette, IN, USA
| | - Jerry A Stitzel
- Institute for Behavioral Genetics, University of Colorado Boulder, Boulder, CO, USA
- Department of Integrative Physiology, University of Colorado, Boulder, Boulder, CO, USA
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Sarma SN, Nagano R, Ohsako S. Tyroxine Hydroxylase-Positive Neuronal Cell Population is Increased by Temporal Dioxin Exposure at Early Stage of Differentiation from Human Embryonic Stem Cells. Int J Mol Sci 2019; 20:ijms20112687. [PMID: 31159217 PMCID: PMC6600215 DOI: 10.3390/ijms20112687] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2019] [Revised: 05/28/2019] [Accepted: 05/29/2019] [Indexed: 12/31/2022] Open
Abstract
Background: The neurological effects of short-term dioxin exposure during the fetal period is an important health risk in humans. Here, we investigated the effects of dioxin on neural differentiation using human embryonic stem cells (hESCs) to evaluate human susceptibility to dioxin. Methods: Using an enzymatic bulk passage, neural differentiation from human ESCs was carried out. 2,3,7,8-Tetrachlorodibenzo-p-dioxin (TCDD) was added to various stages of culture. The expression levels of the neuronal markers microtubule-associated protein 2 (MAP2) and thyroxine hydroxylase (TH) were measured by RT-qPCR and image analysis of immunostaining. Results: Although early-stage neuronal cells are quite resistant to TCDD, the numbers of neural rosettes and increases in mRNA expression levels and the number of cells positive for MAP2 and TH were significant by temporal exposure at embryoid body stage (Day9-exposure group). In contrast, the TCDD exposures against ESCs (Day0-exposure group) and differentiated neural cells (Day35-exposure group) were not affected at all. The increment was similarly observed by continuous exposure of TCDD from Day9 through Day60. Conclusions: These results indicated that dioxin exposure during the early stage of differentiation from hESCs increases the contents of neuronal cells, especially TH-positive neuronal cells. Regulations of aryl hydrocarbon receptor (AHR) signaling in an early stage of embryogenesis should be investigated extensively to understand the mechanism underlying the increase in neuronal cell populations and to apply the knowledge to regenerative medicine.
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Affiliation(s)
- Sailendra Nath Sarma
- Laboratory of Environmental Health Sciences, Center for Disease Biology and Integrative Medicine, Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8655, Japan.
| | - Reiko Nagano
- Earth-Life Science Institute, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8550, Japan.
| | - Seiichiroh Ohsako
- Laboratory of Environmental Health Sciences, Center for Disease Biology and Integrative Medicine, Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8655, Japan.
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Colter BT, Garber HF, Fleming SM, Fowler JP, Harding GD, Hooven MK, Howes AA, Infante SK, Lang AL, MacDougall MC, Stegman M, Taylor KR, Curran CP. Ahr and Cyp1a2 genotypes both affect susceptibility to motor deficits following gestational and lactational exposure to polychlorinated biphenyls. Neurotoxicology 2019; 65:125-134. [PMID: 29409959 DOI: 10.1016/j.neuro.2018.01.008] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2017] [Revised: 01/16/2018] [Accepted: 01/21/2018] [Indexed: 02/04/2023]
Abstract
Polychlorinated biphenyls (PCBs) are persistent organic pollutants known to cause adverse health effects and linked to neurological deficits in both human and animal studies. Children born to exposed mothers are at highest risk of learning and memory and motor deficits. We developed a mouse model that mimics human variation in the aryl hydrocarbon receptor and cytochrome P450 1A2 (CYP1A2) to determine if genetic variation increases susceptibility to developmental PCB exposure. In our previous studies, we found that high-affinity AhrbCyp1a2(-/-) and poor-affinity AhrdCyp1a2(-/-) knockout mice were most susceptible to learning and memory deficits following developmental PCB exposure compared with AhrbCyp1a2(+/+) wild type mice (C57BL/6J strain). Our follow-up studies focused on motor deficits, because human studies have identified PCBs as a potential risk factor for Parkinson's disease. Dams were treated with an environmentally relevant PCB mixture at gestational day 10 and postnatal day 5. We used a motor battery that included tests of nigrostriatal function as well as cerebellar function, because PCBs deplete thyroid hormone, which is essential to normal cerebellar development. There was a significant effect of PCB treatment in the rotarod test with impaired performance in all three genotypes, but decreased motor learning as well in the two Cyp1a2(-/-) knockout lines. Interestingly, we found a main effect of genotype with corn oil-treated control Cyp1a2(-/-) mice performing significantly worse than Cyp1a2(+/+) wild type mice. In contrast, we found that PCB-treated high-affinity Ahrb mice were most susceptible to disruption of nigrostriatal function with the greatest deficits in AhrbCyp1a2(-/-) mice. We conclude that differences in AHR affinity combined with the absence of CYP1A2 protein affect susceptibility to motor deficits following developmental PCB exposure.
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Affiliation(s)
- Breann T Colter
- Department of Biological Sciences, Northern Kentucky University, Highland Heights, KY, 41076, USA
| | - Helen Frances Garber
- Department of Biological Sciences, Northern Kentucky University, Highland Heights, KY, 41076, USA
| | - Sheila M Fleming
- Department of Psychology and Neurology, University of Cincinnati, Cincinnati, OH, 45267, USA
| | - Jocelyn Phillips Fowler
- Department of Biological Sciences, Northern Kentucky University, Highland Heights, KY, 41076, USA
| | - Gregory D Harding
- Department of Biological Sciences, Northern Kentucky University, Highland Heights, KY, 41076, USA
| | - Molly Kromme Hooven
- Department of Biological Sciences, Northern Kentucky University, Highland Heights, KY, 41076, USA
| | - Amy Ashworth Howes
- Department of Biological Sciences, Northern Kentucky University, Highland Heights, KY, 41076, USA
| | - Smitha Krishnan Infante
- Department of Biological Sciences, Northern Kentucky University, Highland Heights, KY, 41076, USA
| | - Anna L Lang
- Department of Biological Sciences, Northern Kentucky University, Highland Heights, KY, 41076, USA
| | | | - Melinda Stegman
- Department of Biological Sciences, Northern Kentucky University, Highland Heights, KY, 41076, USA
| | - Kelsey Rae Taylor
- Department of Biological Sciences, Northern Kentucky University, Highland Heights, KY, 41076, USA
| | - Christine Perdan Curran
- Department of Biological Sciences, Northern Kentucky University, Highland Heights, KY, 41076, USA.
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8
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Guo Z, Xie HQ, Zhang P, Luo Y, Xu T, Liu Y, Fu H, Xu L, Valsami-Jones E, Boksa P, Zhao B. Dioxins as potential risk factors for autism spectrum disorder. ENVIRONMENT INTERNATIONAL 2018; 121:906-915. [PMID: 30347373 DOI: 10.1016/j.envint.2018.10.028] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/16/2018] [Revised: 10/14/2018] [Accepted: 10/14/2018] [Indexed: 06/08/2023]
Abstract
Autism spectrum disorder (ASD) has emerged as a major public health concern due to its fast-growing prevalence in recent decades. Environmental factors are thought to contribute substantially to the variance in ASD. Interest in environmental toxins as causes of ASD has arisen due to the high sensitivity of the developing human brain to toxic chemicals, particularly to dioxin and certain dioxin-like compounds (dioxins). As a group of typical persistent organic pollutants, dioxins have been found to exert adverse effects on human brain development. In this paper, we review the evidence for association of exposure to dioxins with neurodevelopmental abnormalities related to ASD based on both human epidemiological and animal studies. It has been documented that exposure to dioxins during critical developmental periods increased risk for ASD. This notion has been demonstrated in different populations exposed to high or background level of dioxins. Furthermore, the effects and mechanisms of action of dioxins relevant to the pathophysiology and pathogenesis of ASD are summarized, describing potential underlying mechanisms linking dioxin exposure with ASD onset. Further studies focusing on effects of prenatal/perinatal exposure to individual dioxin congeners or to mixtures of dioxins on ASD-associated behavioral and neurobiological consequences in animal models, and on the mechanisms of actions of dioxins, are needed in order to better understand how dioxin exposure might contribute to increased risk for ASD.
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Affiliation(s)
- Zhiling Guo
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Heidi Qunhui Xie
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Peng Zhang
- University of Birmingham, School of Geography, Earth and Environmental Sciences, Birmingham B15 2TT, UK
| | - Yali Luo
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Tuan Xu
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yiyun Liu
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Hualing Fu
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Li Xu
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Eugenia Valsami-Jones
- University of Birmingham, School of Geography, Earth and Environmental Sciences, Birmingham B15 2TT, UK
| | - Patricia Boksa
- Department of Psychiatry, McGill University, 6875 LaSalle Boulevard, Montreal, QC, Canada; Neuroscience Division, Douglas Mental Health University Institute, Montreal, QC, Canada.
| | - Bin Zhao
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China.
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9
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Kondo H, Tanio K, Nagaura Y, Nagayoshi M, Mitoma C, Furue M, Maeda T. Sleep disorders among Yusho patients highly intoxicated with dioxin-related compounds: A 140-case series. ENVIRONMENTAL RESEARCH 2018; 166:261-268. [PMID: 29908457 DOI: 10.1016/j.envres.2018.05.033] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/13/2018] [Revised: 05/26/2018] [Accepted: 05/29/2018] [Indexed: 06/08/2023]
Abstract
PURPOSE Patients with Yusho, a condition caused by exposure to dioxins and dioxin-like compounds, have diverse mental and physical complaints. However, the relationship between dioxins and sleep disorders has not yet been examined. This cross-sectional study was designed to investigate problems associated with sleep among patients with Yusho. METHODS A total of 140 participants (52.9% men, average age: 67.1 ± 12.2 years) were examined using questionnaires and medical interviews by an expert on sleep medicine. Demographic and clinical characteristics, including blood concentrations of 2,3,4,7,8-pentachlorodibenzofuran (PeCDF), which is the major cause of Yusho, were obtained from the results of recent surveys conducted by the Yusho Study Group. RESULTS Moderate to severe symptoms of insomnia were present in 51.8% of the patients. The median Pittsburgh Sleep Quality Index global score (PSQI GS) was 8 (interquartile range: 5-11). The prevalence of restless legs syndrome/Willis-Ekbom disease (RLS/WED) was 30.7%; 24.3% of patients had severe RLS/WED (distressing symptoms with a frequency ≥ 1day per week). A higher blood concentration of 2,3,4,7,8-PeCDF (≥72.27 pg/g lipid) and severe RLS/WED were associated with higher odds of a PSQI GS ≥8, after adjusting for covariates (odds ratio [95% confidence interval]: 4.84 [1.10-21.25] and 4.15 [1.53-11.28], respectively). CONCLUSIONS Symptoms of insomnia were frequent, and the prevalence of RLS/WED was high in patients with Yusho. In addition to the presence of RLS/WED, a higher blood concentration of 2,3,4,7,8-PeCDF was associated with lower subjective sleep quality.
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Affiliation(s)
- Hideaki Kondo
- Research and Clinical Center for Yusho and Dioxin, Kyushu University Hospital, Fukuoka, Japan; Department of General Medicine, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan.
| | - Keiko Tanio
- Research and Clinical Center for Yusho and Dioxin, Kyushu University Hospital, Fukuoka, Japan
| | - Yuki Nagaura
- Department of General Medicine, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Mako Nagayoshi
- Department of Community Medicine, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Chikage Mitoma
- Research and Clinical Center for Yusho and Dioxin, Kyushu University Hospital, Fukuoka, Japan
| | - Masutaka Furue
- Research and Clinical Center for Yusho and Dioxin, Kyushu University Hospital, Fukuoka, Japan
| | - Takahiro Maeda
- Department of General Medicine, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan; Department of Community Medicine, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
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10
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The Aryl Hydrocarbon Receptor and the Nervous System. Int J Mol Sci 2018; 19:ijms19092504. [PMID: 30149528 PMCID: PMC6163841 DOI: 10.3390/ijms19092504] [Citation(s) in RCA: 70] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2018] [Revised: 08/17/2018] [Accepted: 08/21/2018] [Indexed: 12/12/2022] Open
Abstract
The aryl hydrocarbon receptor (or AhR) is a cytoplasmic receptor of pollutants. It translocates into the nucleus upon binding to its ligands, and forms a heterodimer with ARNT (AhR nuclear translocator). The heterodimer is a transcription factor, which regulates the transcription of xenobiotic metabolizing enzymes. Expressed in many cells in vertebrates, it is mostly present in neuronal cell types in invertebrates, where it regulates dendritic morphology or feeding behavior. Surprisingly, few investigations have been conducted to unravel the function of the AhR in the central or peripheral nervous systems of vertebrates. In this review, we will present how the AhR regulates neural functions in both invertebrates and vertebrates as deduced mainly from the effects of xenobiotics. We will introduce some of the molecular mechanisms triggered by the well-known AhR ligand, 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD), which impact on neuronal proliferation, differentiation, and survival. Finally, we will point out the common features found in mice that are exposed to pollutants, and in AhR knockout mice.
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11
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Brimson JM, Safrany ST, Qassam H, Tencomnao T. Dipentylammonium Binds to the Sigma-1 Receptor and Protects Against Glutamate Toxicity, Attenuates Dopamine Toxicity and Potentiates Neurite Outgrowth in Various Cultured Cell Lines. Neurotox Res 2018; 34:263-272. [PMID: 29589276 DOI: 10.1007/s12640-018-9883-5] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2017] [Revised: 02/14/2018] [Accepted: 02/19/2018] [Indexed: 01/01/2023]
Abstract
Alzheimer's disease is a neurodegenerative disease that affects 44 million people worldwide, costing the world $605 billion to care for those affected not taking into account the physical and psychological costs for those who care for Alzheimer's patients. Dipentylammonium is a simple amine, which is structurally similar to a number of other identified sigma-1 receptor ligands with high affinities such as (2R-trans)-2butyl-5-heptylpyrrolidine, stearylamine and dodecylamine. This study investigates whether dipentylammonium is able to provide neuroprotective effects similar to those of sigma-1 receptor agonists such as PRE-084. Here we identify dipentylammonium as a sigma-1 receptor ligand with nanomolar affinity. We have found that micromolar concentrations of dipentylammonium protect from glutamate toxicity and prevent NFκB activation in HT-22 cells. Micromolar concentrations of dipentylammonium also protect stably expressing amyloid precursor protein Swedish mutant (APP/Swe) Neuro2A cells from toxicity induced by 150 μM dopamine, suggesting that dipentylammonium may be useful for the treatment of Parkinsonian symptoms in Alzheimer's patients which are often associated with a more rapid deterioration of cognitive and physical ability. Finally, we found that low micromolar concentrations of dipentylammonium could out preform known sigma-1 receptor agonist PRE-084 in potentiating neurite outgrowth in Neuro2A cells, further suggesting that dipentylammonium has a potential use in the treatment of neurodegenerative diseases and could be acting through the sigma-1 receptor.
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Affiliation(s)
- James M Brimson
- Age-related Inflammation and Degeneration Research Unit, Department of Clinical Chemistry, Faculty of Allied Health Sciences, Chulalongkorn University, Bangkok, 10230, Thailand
| | - Stephen T Safrany
- Royal College of Surgeons in Ireland, Medical University of Bahrain, P.O. Box 15503, Adliya, Bahrain
| | - Heider Qassam
- Department of Molecular and Cell Biology, University in Leicester, Henry Wellcome Building, Lancaster Road, Leicester, LE1 7RH, UK
| | - Tewin Tencomnao
- Age-related Inflammation and Degeneration Research Unit, Department of Clinical Chemistry, Faculty of Allied Health Sciences, Chulalongkorn University, Bangkok, 10230, Thailand.
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Meakin CJ, Martin EM, Santos HP, Mokrova I, Kuban K, O'Shea TM, Joseph RM, Smeester L, Fry RC. Placental CpG methylation of HPA-axis genes is associated with cognitive impairment at age 10 among children born extremely preterm. Horm Behav 2018; 101:29-35. [PMID: 29477804 PMCID: PMC6354776 DOI: 10.1016/j.yhbeh.2018.02.007] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/01/2017] [Revised: 01/29/2018] [Accepted: 02/12/2018] [Indexed: 12/14/2022]
Abstract
A major component of the neuroendocrine system is the hypothalamus-pituitary adrenal (HPA) axis. HPA axis genes are also known to play a role in placental physiology. Thus, disruptions in the signaling of HPA axis-associated genes may adversely impact the placenta as well as fetal development, with adverse consequences for health and development of the child. In support of this, recent studies have shown that placental epigenetic methylation of HPA axis genes has an impact on infant behavior. In this study, we evaluated CpG methylation of 14 placental HPA axis-associated genes from a subcohort (n=228) of the Extremely Low Gestational Age Newborns (ELGAN) cohort in relation to cognitive function in mid-childhood (e.g. 10 yrs). Multivariable logistic regression revealed that placental CpG methylation of 10 HPA-axis associated genes were significantly associated with cognition at age 10. Specifically, placental CpG methylation levels of the glucocorticoid receptor gene, Nuclear Receptor Subfamily Group 3 C Member 1 (NR3C1 ) and Brain-derived Neurotropic Factor (BDNF ) were significantly associated with increased odds in developing moderate/severe adverse cognitive impairment at age 10. Methyl-CpG Binding Protein 2 (MECP2) was the major transcriptional regulator of the ten identified HPA genes. The data suggest that placental CpG methylation is associated with cognitive outcomes in mid-childhood.
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Affiliation(s)
- C J Meakin
- Department of Environmental Sciences and Engineering, Gillings School of Global Public Health, University of North Carolina, Chapel Hill, NC, USA
| | - E M Martin
- Department of Environmental Sciences and Engineering, Gillings School of Global Public Health, University of North Carolina, Chapel Hill, NC, USA; Curriculum in Toxicology, University of North Carolina, Chapel Hill, NC, USA
| | - H P Santos
- School of Nursing, University of North Carolina, Chapel Hill, NC, USA
| | - I Mokrova
- Frank Porter Graham Child Development Institute, University of North Carolina, Chapel Hill, NC, USA
| | - K Kuban
- Department of Pediatrics, Boston Medical Center, Boston, MA, USA
| | - T M O'Shea
- Department of Pediatrics, University of North Carolina School of Medicine, University of North Carolina, Chapel Hill, NC, USA
| | - R M Joseph
- Department of Anatomy and Neurobiology, Boston University School of Medicine, Boston, MA, USA
| | - L Smeester
- Department of Environmental Sciences and Engineering, Gillings School of Global Public Health, University of North Carolina, Chapel Hill, NC, USA
| | - R C Fry
- Department of Environmental Sciences and Engineering, Gillings School of Global Public Health, University of North Carolina, Chapel Hill, NC, USA; Curriculum in Toxicology, University of North Carolina, Chapel Hill, NC, USA.
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Ames J, Warner M, Brambilla P, Mocarelli P, Satariano WA, Eskenazi B. Neurocognitive and physical functioning in the Seveso Women's Health Study. ENVIRONMENTAL RESEARCH 2018; 162:55-62. [PMID: 29287180 PMCID: PMC5811349 DOI: 10.1016/j.envres.2017.12.005] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/12/2017] [Revised: 12/04/2017] [Accepted: 12/08/2017] [Indexed: 05/09/2023]
Abstract
2,3,7,8-Tetrachlorodibenzo-p-dioxin (TCDD) is neurotoxic in animals but few studies have investigated its effects on the human brain. Related dioxin-like compounds have been linked to poorer cognitive and motor function in older adults, with effects more pronounced in women, perhaps due to the loss of neuro-protective estrogen in menopause. On 10 July 1976, a chemical explosion in Seveso, Italy, resulted in one of the highest known residential exposures to TCDD. In 1996, we initiated the Seveso Women's Health Study, a retrospective cohort study of the health of the women who were newborn to 40 years old in 1976. Here, we investigate whether TCDD exposure is associated with physical functioning and working memory more than 20 years later. Individual TCDD concentration (ppt) was measured in archived serum collected soon after the explosion. In 1996 and 2008, we measured physical functioning (n=154) and working memory (n=459), respectively. We examined associations between serum TCDD and motor and cognitive outcomes with multivariate linear regression and semi-parametric estimators. A 10-fold increase in serum TCDD was not associated with walking speed (adjusted β=0.0006ft/s, 95% Confidence Interval (CI): -0.13, 0.13), upper body mobility (adjusted β=-0.06, 95% CI: -0.36, 0.23), or manual dexterity (adjusted β=0.34, 95% CI: -0.65, 1.33). We observed an inverted U-shaped association in grip strength, with poorer strength in the lowest and highest TCDD exposure levels. There was no association between TCDD and the Wechsler digit and spatial span tests. Neither menopause status at assessment nor developmental timing of exposure modified associations between TCDD and working memory. Our findings, in one of the only studies of TCDD's effects on neuropsychological and physical functioning in women, do not indicate an adverse effect on these domains, with the exception of a U-shaped relationship with grip strength. Given the limited assessment and relative youth of the women at this follow-up, future work examining additional neuropsychological outcomes is warranted.
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Affiliation(s)
- Jennifer Ames
- Center for Environmental Research & Children's Health (CERCH), School of Public Health, University of California, Berkeley, CA, USA
| | - Marcella Warner
- Center for Environmental Research & Children's Health (CERCH), School of Public Health, University of California, Berkeley, CA, USA
| | - Paolo Brambilla
- Department of Laboratory Medicine, University of Milano-Bicocca, School of Medicine, Hospital of Desio, Desio-Milano, Italy
| | - Paolo Mocarelli
- Department of Laboratory Medicine, University of Milano-Bicocca, School of Medicine, Hospital of Desio, Desio-Milano, Italy
| | | | - Brenda Eskenazi
- Center for Environmental Research & Children's Health (CERCH), School of Public Health, University of California, Berkeley, CA, USA.
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14
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Conserved Upstream Regulatory Regions in Mammalian Tyrosine Hydroxylase. Mol Neurobiol 2018; 55:7340-7351. [PMID: 29404959 DOI: 10.1007/s12035-018-0936-9] [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: 11/05/2017] [Accepted: 01/25/2018] [Indexed: 10/18/2022]
Abstract
Tyrosine hydroxylase (Th) encodes the rate-limiting enzyme in catecholamine biosynthesis, and the regulation of its transcription is critical for the specification and maintenance of catecholaminergic neuron phenotypes. For many genes, regulatory genomic DNA sequences that are upstream of the proximal promoter control expression levels as well as region-specific expression patterns. The regulatory architecture of the genomic DNA upstream of the Th proximal promoter, however, is poorly understood. In this study, we examined the 11 kb upstream nucleotide sequence of Th from nine mammalian species and identified five highly conserved regions. Using cultured human cells and mouse olfactory bulb tissue, chromatin immunoprecipitation (ChIP) assays show that these conserved regions recruit transcription factors that are established regulators of Th transcription (such as NURR1, PITX3, FOXA2, MEIS2, and PAX6). This analysis also identified a conserved binding site for CTCF, and functional studies in cultured human cells and ChIP assays with mouse tissue show that CTCF is a novel regulator of Th transcription in the forebrain. Together, the findings in this study provide key insights into the upstream regulatory genomic architecture and regulatory mechanisms controlling mammalian Th gene transcription.
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González-Barbosa E, Mejía-García A, Bautista E, Gonzalez FJ, Segovia J, Elizondo G. TCDD induces UbcH7 expression and synphilin-1 protein degradation in the mouse ventral midbrain. J Biochem Mol Toxicol 2017. [PMID: 28621812 DOI: 10.1002/jbt.21947] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
UbcH7 is an ubiquitin-conjugating enzyme that interacts with parkin, an E3 ligase. The UbcH7-parkin complex promotes the ubiquitination and degradation of several proteins via the 26S proteasome. Cellular accumulation of the UbcH7-parkin targets alpha-synuclein and synphilin-1 has been associated with Parkinson disease. In mouse liver, 2,3,7,8-tetrachlorodibenzo-p-dioxin, an aryl hydrocarbon receptor ligand, induces UbcH7 expression. Therefore, the aim of the present study was to determine whether 2,3,7,8-tetrachlorodibenzo-p-dioxin induces Ubch7 mRNA and UbcH7 protein expression in the mouse brain, to characterize the molecular mechanism, and the effect on synphilin-1 half-life. We found that 2,3,7,8-tetrachlorodibenzo-p-dioxin promotes the aryl hydrocarbon receptor binding to Ubch7 gene promoter as well as its transactivation, resulting in an induction of UbcH7 levels in the olfactory bulb, ventral midbrain, hippocampus, striatum, cerebral cortex, brain stem, and medulla oblongata. In parallel, 2,3,7,8-tetrachlorodibenzo-p-dioxin promoted synphilin-1 degradation in an aryl hydrocarbon receptor-dependent way.
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Affiliation(s)
| | | | - Elizabeth Bautista
- Departamento de Fisiología, Biofísica y Neurociencias, CINVESTAV-IPN, México D.F, México
| | - Frank J Gonzalez
- Laboratory of Metabolism, NCI, National Institutes of Health, Bethesda, MD, USA
| | - José Segovia
- Departamento de Fisiología, Biofísica y Neurociencias, CINVESTAV-IPN, México D.F, México
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Uno K, Miyazaki T, Sodeyama K, Miyamoto Y, Nitta A. Methamphetamine induces Shati/Nat8L expression in the mouse nucleus accumbens via CREB- and dopamine D1 receptor-dependent mechanism. PLoS One 2017; 12:e0174196. [PMID: 28319198 PMCID: PMC5358781 DOI: 10.1371/journal.pone.0174196] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2016] [Accepted: 03/06/2017] [Indexed: 01/12/2023] Open
Abstract
Shati/Nat8L significantly increased in the nucleus accumbens (NAc) of mice after repeated methamphetamine (METH) treatment. We reported that Shati/Nat8L overexpression in mouse NAc attenuated METH-induced hyperlocomotion, locomotor sensitization, and conditioned place preference. We recently found that Shati/Nat8L overexpression in NAc regulates the dopaminergic neuronal system via the activation of group II mGluRs by elevated N-acetylaspartylglutamate following N-acetylaspartate increase due to the overexpression. These findings suggest that Shati/Nat8L suppresses METH-induced responses. However, the mechanism by which METH increases the Shati/Nat8L mRNA expression in NAc is unclear. To investigate the regulatory mechanism of Shati/Nat8L mRNA expression, we performed a mouse Shati/Nat8L luciferase assay using PC12 cells. Next, we investigated the response of METH to Shati/Nat8L expression and CREB activity using mouse brain slices of NAc, METH administration to mice, and western blotting for CREB activity of specific dopamine receptor signals in vivo and ex vivo. We found that METH activates CREB binding to the Shati/Nat8L promoter to induce the Shati/Nat8L mRNA expression. Furthermore, the dopamine D1 receptor antagonist SCH23390, but not the dopamine D2 receptor antagonist sulpiride, inhibited the upregulation of Shati/Nat8L and CREB activities in the mouse NAc slices. Thus, the administration of the dopamine D1 receptor agonist SKF38393 increased the Shati/Nat8L mRNA expression in mouse NAc. These results showed that the Shati/Nat8L mRNA was increased by METH-induced CREB pathway via dopamine D1 receptor signaling in mouse NAc. These findings may contribute to development of a clinical tool for METH addiction.
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Affiliation(s)
- Kyosuke Uno
- Department of Pharmaceutical Therapy and Neuropharmacology, Faculty of Pharmaceutical Sciences, Graduate School of Medicine and Pharmaceutical Sciences, University of Toyama, Toyama, Japan
| | - Toh Miyazaki
- Department of Pharmaceutical Therapy and Neuropharmacology, Faculty of Pharmaceutical Sciences, Graduate School of Medicine and Pharmaceutical Sciences, University of Toyama, Toyama, Japan
| | - Kengo Sodeyama
- Department of Pharmaceutical Therapy and Neuropharmacology, Faculty of Pharmaceutical Sciences, Graduate School of Medicine and Pharmaceutical Sciences, University of Toyama, Toyama, Japan
| | - Yoshiaki Miyamoto
- Department of Pharmaceutical Therapy and Neuropharmacology, Faculty of Pharmaceutical Sciences, Graduate School of Medicine and Pharmaceutical Sciences, University of Toyama, Toyama, Japan
| | - Atsumi Nitta
- Department of Pharmaceutical Therapy and Neuropharmacology, Faculty of Pharmaceutical Sciences, Graduate School of Medicine and Pharmaceutical Sciences, University of Toyama, Toyama, Japan
- * E-mail:
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17
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Prenatal Exposure of Cypermethrin Induces Similar Alterations in Xenobiotic-Metabolizing Cytochrome P450s and Rate-Limiting Enzymes of Neurotransmitter Synthesis in Brain Regions of Rat Offsprings During Postnatal Development. Mol Neurobiol 2015; 53:3670-3689. [DOI: 10.1007/s12035-015-9307-y] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2015] [Accepted: 06/16/2015] [Indexed: 11/30/2022]
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18
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Jia JJ, Zeng XS, Yang LH, Bai J. The epinephrine increases tyrosine hydroxylase expression through upregulating thioredoxin-1 in PC12 cells. Biochimie 2015; 115:52-8. [PMID: 25957836 DOI: 10.1016/j.biochi.2015.04.022] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2014] [Accepted: 04/27/2015] [Indexed: 11/20/2022]
Abstract
Epinephrine is a stress hormone which is sharply increased in response to acute stress and is continuously elevated during persistent stress. Thioredoxin-1 (Trx-1) is a redox regulating protein and is induced under various stresses. Our previous study has shown that epinephrine induces the expression of Trx-1. Tyrosine hydroxylase (TH) is the major rate-limiting enzyme in catecholamine biosynthesis in response to stress. However, how TH is regulated by epinephrine is still unknown. In the present study, we found that epinephrine increased the expression of TH in a dose- and time-dependent manner in PC12 cells, which was inhibited by propranolol (β-adrenergic receptor inhibitor), but not by phenoxybenzamine (α-adrenergic receptor inhibitor). The increase of TH was also inhibited by SQ22536 (adenylyl cyclase inhibitor), H-89(PKA inhibitor) and LY294002 (phosphatidylinositol 3 kinase inhibitor). More importantly, overexpression of Trx-1 significantly enhanced the expression of TH, while Trx-1 siRNA suppressed TH expression induced by epinephrine. These results suggest that Trx-1 is involved in TH expression induced by epinephrine in PC12 cells.
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Affiliation(s)
- Jin-Jing Jia
- Laboratory of Molecular Neurobiology, Medical Faculty, Kunming University of Science and Technology, Kunming 650500, China
| | - Xian-Si Zeng
- Laboratory of Molecular Neurobiology, Medical Faculty, Kunming University of Science and Technology, Kunming 650500, China
| | - Li-Hua Yang
- Laboratory of Molecular Neurobiology, Medical Faculty, Kunming University of Science and Technology, Kunming 650500, China
| | - Jie Bai
- Laboratory of Molecular Neurobiology, Medical Faculty, Kunming University of Science and Technology, Kunming 650500, China.
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19
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Differential distribution of hypoxia-inducible factor 1-beta (ARNT or ARNT2) in mouse substantia nigra and ventral tegmental area. J Chem Neuroanat 2014; 61-62:64-71. [DOI: 10.1016/j.jchemneu.2014.07.001] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2014] [Revised: 06/03/2014] [Accepted: 07/02/2014] [Indexed: 01/27/2023]
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20
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Budinsky RA, Schrenk D, Simon T, Van den Berg M, Reichard JF, Silkworth JB, Aylward LL, Brix A, Gasiewicz T, Kaminski N, Perdew G, Starr TB, Walker NJ, Rowlands JC. Mode of action and dose–response framework analysis for receptor-mediated toxicity: The aryl hydrocarbon receptor as a case study. Crit Rev Toxicol 2013; 44:83-119. [DOI: 10.3109/10408444.2013.835787] [Citation(s) in RCA: 56] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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21
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Anderson G, Maes M. Neurodegeneration in Parkinson's disease: interactions of oxidative stress, tryptophan catabolites and depression with mitochondria and sirtuins. Mol Neurobiol 2013; 49:771-83. [PMID: 24085563 DOI: 10.1007/s12035-013-8554-z] [Citation(s) in RCA: 62] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2013] [Accepted: 09/19/2013] [Indexed: 11/29/2022]
Abstract
The biological underpinnings to the etiology and course of neurodegeneration in Parkinson's disease are an area of extensive research that has yet to produce an early biological marker or disease-slowing or preventative treatment. Recent conceptualizations of Parkinson's disease have integrated immuno-inflammation and oxidative and nitrosative stress occurring in depression, somatization and peripheral inflammation into the course of Parkinson's disease. We review the data showing the importance of immuno-inflammatory processes and oxidative and nitrosative stress in such classically conceived 'comorbidities', suggesting that lifetime, prodromal and concurrent depression and somatization may be intricately involved in the etiology and course of Parkinson's disease, rather than psychiatric comorbidities. This produces a longer term developmental perspective of Parkinson's disease, which incorporates tryptophan catabolites (TRYCATs), lipid peroxidation, sirtuins, cyclic adenosine monophosphate, aryl hydrocarbon receptor, and circadian genes. This integrates wider bodies of data pertaining to neuronal loss in Parkinson's disease, emphasizing how these interact with susceptibility genes to drive changes in mitochondria, blood-brain barrier permeability and intercellular signalling. We review this data here in the context of neurodegeneration in Parkinson's disease and to the future directions indicated for slowing disease progression.
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Tanida T, Tasaka K, Akahoshi E, Ishihara-Sugano M, Saito M, Kawata S, Danjo M, Tokumoto J, Mantani Y, Nagahara D, Tabuchi Y, Yokoyama T, Kitagawa H, Kawata M, Hoshi N. Fetal exposure to 2,3,7,8-tetrachlorodibenzo-p-dioxin transactivates aryl hydrocarbon receptor-responsive element III in the tyrosine hydroxylase immunoreactive neurons of the mouse midbrain. J Appl Toxicol 2013; 34:117-26. [DOI: 10.1002/jat.2839] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2012] [Revised: 10/16/2012] [Accepted: 10/16/2012] [Indexed: 01/03/2023]
Affiliation(s)
- Takashi Tanida
- Department of Anatomy and Neurobiology; Kyoto Prefectural University of Medicine; Kawaramachi Hirokoji, Kamigyo-ku Kyoto 602-8566 Japan
- Department of Animal Science, Graduate School of Agricultural Science; Kobe University; 1-1 Rokkodai cho, Nada Kobe 657-8501 Japan
| | - Ken Tasaka
- Department of Animal Science, Graduate School of Agricultural Science; Kobe University; 1-1 Rokkodai cho, Nada Kobe 657-8501 Japan
| | - Eiichi Akahoshi
- Frontier Research Laboratory, Corporate Research and Development Center; Toshiba Corporation; 1 Komukai-Toshiba cho, Saiwai Kawasaki 212-8582 Japan
| | - Mitsuko Ishihara-Sugano
- Frontier Research Laboratory, Corporate Research and Development Center; Toshiba Corporation; 1 Komukai-Toshiba cho, Saiwai Kawasaki 212-8582 Japan
| | - Michiko Saito
- Laboratory of Molecular and Cell Genetics, Graduate School of Biological Sciences; Nara Institute of Science and Technology; 8916-5 Takayama, Ikoma Nara 630-0192 Japan
| | - Shigehisa Kawata
- Laboratory of Molecular Oncology, Graduate School of Biological Sciences; Nara Institute of Science and Technology; 8916-5 Takayama, Ikoma Nara 630-0192 Japan
| | - Megumi Danjo
- Department of Animal Science, Graduate School of Agricultural Science; Kobe University; 1-1 Rokkodai cho, Nada Kobe 657-8501 Japan
| | - Junko Tokumoto
- Department of Animal Science, Graduate School of Agricultural Science; Kobe University; 1-1 Rokkodai cho, Nada Kobe 657-8501 Japan
| | - Youhei Mantani
- Department of Animal Science, Graduate School of Agricultural Science; Kobe University; 1-1 Rokkodai cho, Nada Kobe 657-8501 Japan
| | - Daichi Nagahara
- Department of Animal Science, Graduate School of Agricultural Science; Kobe University; 1-1 Rokkodai cho, Nada Kobe 657-8501 Japan
| | - Yoshiaki Tabuchi
- Division of Molecular Genetics Research, Life Science Research Center; University of Toyama; 2630 Sugitani Toyama 930-0194 Japan
| | - Toshifumi Yokoyama
- Department of Animal Science, Graduate School of Agricultural Science; Kobe University; 1-1 Rokkodai cho, Nada Kobe 657-8501 Japan
| | - Hiroshi Kitagawa
- Department of Animal Science, Graduate School of Agricultural Science; Kobe University; 1-1 Rokkodai cho, Nada Kobe 657-8501 Japan
| | - Mitsuhiro Kawata
- Department of Anatomy and Neurobiology; Kyoto Prefectural University of Medicine; Kawaramachi Hirokoji, Kamigyo-ku Kyoto 602-8566 Japan
| | - Nobuhiko Hoshi
- Department of Animal Science, Graduate School of Agricultural Science; Kobe University; 1-1 Rokkodai cho, Nada Kobe 657-8501 Japan
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Guyot E, Chevallier A, Barouki R, Coumoul X. The AhR twist: ligand-dependent AhR signaling and pharmaco-toxicological implications. Drug Discov Today 2012; 18:479-86. [PMID: 23220635 DOI: 10.1016/j.drudis.2012.11.014] [Citation(s) in RCA: 92] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2012] [Revised: 11/13/2012] [Accepted: 11/28/2012] [Indexed: 01/20/2023]
Abstract
The aryl hydrocarbon receptor (AhR) is a transcription factor which is activated by diverse compounds and regulates the expression of xenobiotic metabolism genes. Recent studies have unraveled unsuspected physiological roles and novel alternative ligand-specific pathways for this receptor. In this review, we discuss these novel aspects and focus on the different responses elicited by the diverse endogenous and/or exogenous AhR ligands. In addition to challenging the relevance of the 'agonist/antagonist' classification of ligands, we introduce the concept of AhR plasticity as a primordial factor in the generation of these pathways. Finally, we suggest several promising perspectives for the pharmacological modulation of these responses.
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Affiliation(s)
- Erwan Guyot
- INSERM UMR-S 747, Toxicologie Pharmacologie et Signalisation Cellulaire, 45 rue des Saints Pères, 75006 Paris, France
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24
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Dopamine induces apoptosis in APPswe-expressing Neuro2A cells following Pepstatin-sensitive proteolysis of APP in acid compartments. Brain Res 2012; 1471:102-17. [DOI: 10.1016/j.brainres.2012.06.025] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2012] [Revised: 06/14/2012] [Accepted: 06/21/2012] [Indexed: 11/23/2022]
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25
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Akahoshi E, Yoshimura S, Uruno S, Itoh S, Ishihara-Sugano M. Tyrosine hydroxylase assay: a bioassay for aryl hydrocarbon receptor-active compounds based on tyrosine hydroxylase promoter activation. Toxicol Mech Methods 2012; 22:458-60. [PMID: 22394336 DOI: 10.3109/15376516.2012.668574] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Tyrosine hydroxylase (TH) assay is a novel bioassay for screening aryl hydrocarbon receptor (AhR)-active compounds with diverse toxicities. The TH assay employs reporter genes to evaluate TH promoter activity, which is linked to dopamine synthesis and regulated by the AhR-aryl hydrocarbon receptor responsive element-III (AHRE-III)-mediated pathway. The toxic equivalency factors for higher chlorinated dioxin congeners in the TH assay (TH-TEF) exhibit the same tendency as those for the WHO-TEF, indicating that the activity of the TH assay is consistent with that of existing methods. Furthermore, other chemicals, such as lower chlorinated dioxin congeners that were minimally investigated in the past could be detected preferentially by this assay.
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Affiliation(s)
- Eiichi Akahoshi
- Frontier Research Laboratory, Corporate Research and Development Center, Toshiba Corporation, Komukai-Toshiba-cho, Saiwai-ku, Kawasaki, Japan
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26
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Malekinejad H, Bull S, Rahmani F, Fink-Gremmels J. Cytotoxic Effects of Serum from Equine Grass Sickness Cases on Neuro-2a and PC12 Tet-Off Cell Lines: Implication for Using In Vitro Methods as Antemortem Diagnostic Tools. J Equine Vet Sci 2012. [DOI: 10.1016/j.jevs.2011.08.007] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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27
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Olivero-Verbel J, Cabarcas-Montalvo M, Ortega-Zúñiga C. Theoretical targets for TCDD: a bioinformatics approach. CHEMOSPHERE 2010; 80:1160-1166. [PMID: 20605043 DOI: 10.1016/j.chemosphere.2010.06.020] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/20/2009] [Revised: 05/19/2010] [Accepted: 06/07/2010] [Indexed: 05/29/2023]
Abstract
Dioxins are a group of highly toxic molecules that exert their toxicity through the activation of the aryl hydrocarbon receptor (AhR). The most important agonist of the AhR, 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD) is a highly toxic compound. Although most of the effects related to TCDD exposure have been linked to the activation of AhR, the objective of this work was to use a bioinformatics approach to identify possible new targets for TCDD. The Target Fishing Docking (TarFisDock) Server was used to find target proteins for TCDD. This virtual screening allowed the identification of binding sites with high affinity for TCDD in diverse proteins, such as metallopeptidases 8 and 3, oxidosqualene cyclase, and myeloperoxidase. Some of these proteins are well known for their biochemical role in some pathological effects of dioxin exposure, including endometriosis, diabetes, inflammation and liver damage. These results suggest that TCDD could also be interacting with cellular targets though AhR-independent pathways.
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Affiliation(s)
- Jesús Olivero-Verbel
- Environmental and Computational Chemistry Group, University of Cartagena, Cartagena, Colombia.
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