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Huang Y, Yang D, Liao S, Guan X, Zhou F, Liu Y, Wang Y, Zhang Y. Ginsenoside Rg1 protects the blood-brain barrier and myelin sheath to prevent postoperative cognitive dysfunction in aged mice. Neuroreport 2024; 35:925-935. [PMID: 39166417 DOI: 10.1097/wnr.0000000000002083] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/22/2024]
Abstract
In this study, the postoperative cognitive dysfunction (POCD) mouse model was established to observe the changes in inflammation, blood-brain barrier permeability, and myelin sheath, and we explore the effect of ginsenoside Rg1 pretreatment on improving POCD syndrome. The POCD model of 15- to 18-month-old mice was carried out with internal fixation of tibial fractures under isoflurane anesthesia. Pretreatment was performed by continuous intraperitoneal injection of ginsenoside Rg1(40 mg/kg/day) for 14 days before surgery. The cognitive function was detected by the Morris water maze. The contents of interleukin-1β and tumor necrosis factor-α in the hippocampus, cortex, and serum were detected by ELISA. The permeability of blood-brain barrier was observed by Evans blue. The mRNA levels and protein expression levels of 2',3'-cyclic nucleotide 3'-phosphodiesterase (CNPase), myelin basic protein (MBP), beta-catenin, and cyclin D1 in the hippocampus were analyzed by quantitative PCR and western blotting. The protein expression levels of ZO-1 and Wnt1 in the hippocampus were analyzed by western blotting. Finally, the localizations of CNPase and MBP in the hippocampus were detected by immunofluorescence. Ginsenoside Rg1 can prevent POCD, peripheral and central inflammation, and blood-brain barrier leakage, and reverse the downregulation of ZO-1, CNPase, MBP, and Wnt pathway-related molecules in aged mice. Preclinical studies suggest that ginsenoside Rg1 improves postoperative cognitive function in aged mice by protecting the blood-brain barrier and myelin sheath, and its specific mechanism may be related to the Wnt/β-catenin pathway.
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Affiliation(s)
- Yao Huang
- Department of Anesthesiology, The Affiliated Hospital, Southwest Medical University
- Department of Anesthesiology, The Affiliated Traditional Chinese Medicine Hospital, Southwest Medical University
| | - Dianping Yang
- Department of Anesthesiology, The Affiliated Traditional Chinese Medicine Hospital, Southwest Medical University
| | - Sijing Liao
- Department of Anesthesiology, The Affiliated Traditional Chinese Medicine Hospital, Southwest Medical University
| | - Xilin Guan
- Department of Anesthesiology, The Affiliated Traditional Chinese Medicine Hospital, Southwest Medical University
| | - Feiran Zhou
- Department of Pain, The Affiliated Traditional Chinese Medicine Hospital, Southwest Medical University
| | - Yan Liu
- Department of Anesthesiology, The Affiliated Traditional Chinese Medicine Hospital, Southwest Medical University
| | - Yong Wang
- Department of Anesthesiology, The Affiliated Traditional Chinese Medicine Hospital, Southwest Medical University
| | - Ying Zhang
- Department of Anesthesiology, The Affiliated Hospital, Southwest Medical University
- Department of Anesthesiology, The Affiliated Traditional Chinese Medicine Hospital, Southwest Medical University
- Department of Anesthesiology, Heiiang Hospital of Traditional Chinese Medicine, Southwest Medical University, Luzhou, Sichuan Province, China
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Jiang C, Guan J, Tang X, Zhang Y, Li X, Li Y, Chen Z, Zhang J, Li JD. Prenatal low-dose Bisphenol A exposure impacts cortical development via cAMP-PKA-CREB pathway in offspring. Front Integr Neurosci 2024; 18:1419607. [PMID: 39170668 PMCID: PMC11335628 DOI: 10.3389/fnint.2024.1419607] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2024] [Accepted: 07/18/2024] [Indexed: 08/23/2024] Open
Abstract
Bisphenol A (BPA) is a widely used plasticizer known to cause various disorders. Despite a global reduction in the use of BPA-containing products, prenatal exposure to low-dose BPA, even those below established safety limits, has been linked to neurological and behavioral deficits in childhood. The precise mechanisms underlying these effects remain unclear. In the present study, we observed a significant increase in the number of cortical neurons in offspring born to dams exposed to low-dose BPA during pregnancy. We also found that this prenatal exposure to low-dose BPA led to increased proliferation but reduced migration of cortical neurons. Transcriptomic analysis via RNA sequencing revealed an aberrant activation of the cAMP-PKA-CREB pathway in offspring exposed to BPA. The use of H89, a selective PKA inhibitor, effectively rescued the deficits in both proliferation and migration of cortical neurons. Furthermore, offspring from dams exposed to low-dose BPA exhibited manic-like behaviors, including hyperactivity, anti-depressant-like responses, and reduced anxiety. While H89 normalized hyperactivity, it didn't affect the other behavioral changes. These results suggest that the overactivation of PKA plays a causative role in BPA-induced changes in neuronal development. Our data also indicate that manic-like behaviors induced by prenatal low-dose BPA exposure may be influenced by both altered neuronal development and abnormal PKA signaling in adulthood.
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Affiliation(s)
- Chu Jiang
- Furong Laboratory, Center for Medical Genetics, School of Life Sciences, Central South University, Changsha, Hunan, China
- Hunan Key Laboratory of Animal Models for Human Diseases, Changsha, Hunan, China
- Hunan Key Laboratory of Medical Genetics, Changsha, Hunan, China
| | - Jun Guan
- Furong Laboratory, Center for Medical Genetics, School of Life Sciences, Central South University, Changsha, Hunan, China
- Hunan Key Laboratory of Animal Models for Human Diseases, Changsha, Hunan, China
- Hunan Key Laboratory of Medical Genetics, Changsha, Hunan, China
| | - Xiangrong Tang
- Center for Reproductive Medicine, Women and Children's Hospital of Chongqing Medical University, Chongqing, China
| | - Yichun Zhang
- Furong Laboratory, Center for Medical Genetics, School of Life Sciences, Central South University, Changsha, Hunan, China
- Hunan Key Laboratory of Animal Models for Human Diseases, Changsha, Hunan, China
- Hunan Key Laboratory of Medical Genetics, Changsha, Hunan, China
| | - Xiangyu Li
- Furong Laboratory, Center for Medical Genetics, School of Life Sciences, Central South University, Changsha, Hunan, China
- Hunan Key Laboratory of Animal Models for Human Diseases, Changsha, Hunan, China
- Hunan Key Laboratory of Medical Genetics, Changsha, Hunan, China
| | - Yuting Li
- Department of Pediatrics, The Third Xiangya Hospital, Central South University, Changsha, China
| | - Zhiheng Chen
- Department of Pediatrics, The Third Xiangya Hospital, Central South University, Changsha, China
| | - Jing Zhang
- Furong Laboratory, Center for Medical Genetics, School of Life Sciences, Central South University, Changsha, Hunan, China
- Hunan Key Laboratory of Animal Models for Human Diseases, Changsha, Hunan, China
- Hunan Key Laboratory of Medical Genetics, Changsha, Hunan, China
| | - Jia-Da Li
- Furong Laboratory, Center for Medical Genetics, School of Life Sciences, Central South University, Changsha, Hunan, China
- Hunan Key Laboratory of Animal Models for Human Diseases, Changsha, Hunan, China
- Hunan Key Laboratory of Medical Genetics, Changsha, Hunan, China
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Islam R, White JD, Arefin TM, Mehta S, Liu X, Polis B, Giuliano L, Ahmed S, Bowers C, Zhang J, Kaffman A. Early adversity causes sex-specific deficits in perforant pathway connectivity and contextual memory in adolescent mice. Biol Sex Differ 2024; 15:39. [PMID: 38715106 PMCID: PMC11075329 DOI: 10.1186/s13293-024-00616-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/07/2023] [Accepted: 04/26/2024] [Indexed: 05/12/2024] Open
Abstract
BACKGROUND Early life adversity impairs hippocampal development and function across diverse species. While initial evidence indicated potential variations between males and females, further research is required to validate these observations and better understand the underlying mechanisms contributing to these sex differences. Furthermore, most of the preclinical work in rodents was performed in adult males, with only few studies examining sex differences during adolescence when such differences appear more pronounced. To address these concerns, we investigated the impact of limited bedding (LB), a mouse model of early adversity, on hippocampal development in prepubescent and adolescent male and female mice. METHODS RNA sequencing, confocal microscopy, and electron microscopy were used to evaluate the impact of LB and sex on hippocampal development in prepubescent postnatal day 17 (P17) mice. Additional studies were conducted on adolescent mice aged P29-36, which included contextual fear conditioning, retrograde tracing, and ex vivo diffusion magnetic resonance imaging (dMRI). RESULTS More severe deficits in axonal innervation and myelination were found in the perforant pathway of prepubescent and adolescent LB males compared to LB female littermates. These sex differences were due to a failure of reelin-positive neurons located in the lateral entorhinal cortex (LEC) to innervate the dorsal hippocampus via the perforant pathway in males, but not LB females, and were strongly correlated with deficits in contextual fear conditioning. CONCLUSIONS LB impairs the capacity of reelin-positive cells located in the LEC to project and innervate the dorsal hippocampus in LB males but not female LB littermates. Given the critical role that these projections play in supporting normal hippocampal function, a failure to establish proper connectivity between the LEC and the dorsal hippocampus provides a compelling and novel mechanism to explain the more severe deficits in myelination and contextual freezing found in adolescent LB males.
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Affiliation(s)
- Rafiad Islam
- Department of Psychiatry, Yale University School of Medicine, 300 George Street, Suite 901, New Haven, CT, 06511, USA
| | - Jordon D White
- Department of Psychiatry, Yale University School of Medicine, 300 George Street, Suite 901, New Haven, CT, 06511, USA
| | - Tanzil M Arefin
- Bernard and Irene Schwartz Center for Biomedical Imaging, Department of Radiology, New York University School of Medicine, New York, NY, 10016, USA
- Department of Biomedical Engineering, Center for Neurotechnology in Mental Health Research (CNMHR), The Pennsylvania State University, University Park, PA, 16802, USA
| | - Sameet Mehta
- Yale Center for Genomic Analysis, P.O. Box 27386, West Haven, CT, 06516-7386, USA
| | - Xinran Liu
- Department of Cell Biology, Yale University School of Medicine, 333 Cedar Street, SHM IE26, New Haven, CT, 06510, USA
- Center for Cellular and Molecular Imaging, Electron Microscopy Core Facility, Yale University School of Medicine, New Haven, CT, USA
| | - Baruh Polis
- Department of Psychiatry, Yale University School of Medicine, 300 George Street, Suite 901, New Haven, CT, 06511, USA
| | - Lauryn Giuliano
- Department of Psychiatry, Yale University School of Medicine, 300 George Street, Suite 901, New Haven, CT, 06511, USA
| | - Sahabuddin Ahmed
- Department of Psychiatry, Yale University School of Medicine, 300 George Street, Suite 901, New Haven, CT, 06511, USA
| | - Christian Bowers
- Department of Psychiatry, Yale University School of Medicine, 300 George Street, Suite 901, New Haven, CT, 06511, USA
| | - Jiangyang Zhang
- Bernard and Irene Schwartz Center for Biomedical Imaging, Department of Radiology, New York University School of Medicine, New York, NY, 10016, USA
| | - Arie Kaffman
- Department of Psychiatry, Yale University School of Medicine, 300 George Street, Suite 901, New Haven, CT, 06511, USA.
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Tiwari S, Phoolmala, Goyal S, Yadav RK, Chaturvedi RK. Bisphenol-F and Bisphenol-S (BPF and BPS) Impair the Stemness of Neural Stem Cells and Neuronal Fate Decision in the Hippocampus Leading to Cognitive Dysfunctions. Mol Neurobiol 2024:10.1007/s12035-024-04160-1. [PMID: 38635025 DOI: 10.1007/s12035-024-04160-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2024] [Accepted: 04/01/2024] [Indexed: 04/19/2024]
Abstract
Neurogenesis occurs throughout life in the hippocampus of the brain, and many environmental toxicants inhibit neural stem cell (NSC) function and neuronal generation. Bisphenol-A (BPA), an endocrine disrupter used for surface coating of plastic products causes injury in the developing and adult brain; thus, many countries have banned its usage in plastic consumer products. BPA analogs/alternatives such as bisphenol-F (BPF) and bisphenol-S (BPS) may also cause neurotoxicity; however, their effects on neurogenesis are still not known. We studied the effects of BPF and BPS exposure from gestational day 6 to postnatal day 21 on neurogenesis. We found that exposure to non-cytotoxic concentrations of BPF and BPS significantly decreased the number/size of neurospheres, BrdU+ (proliferating NSC marker) and MAP-2+ (neuronal marker) cells and GFAP+ astrocytes in the hippocampus NSC culture, suggesting reduced NSC stemness and self-renewal and neuronal differentiation and increased gliogenesis. These analogs also reduced the number of BrdU/Sox-2+, BrdU/Dcx+, and BrdU/NeuN+ co-labeled cells in the hippocampus of the rat brain, suggesting decreased NSC proliferation and impaired maturation of newborn neurons. BPF and BPS treatment increases BrdU/cleaved caspase-3+ cells and Bax-2 and cleaved caspase protein levels, leading to increased apoptosis in hippocampal NSCs. Transmission electron microscopy studies suggest that BPF and BPS also caused degeneration of neuronal myelin sheath, altered mitochondrial morphology, and reduced number of synapses in the hippocampus leading to altered cognitive functions. These results suggest that BPF and BPS exposure decreased the NSC pool, inhibited neurogenesis, induced apoptosis of NSCs, caused myelin degeneration/synapse degeneration, and impaired learning and memory in rats.
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Affiliation(s)
- Saurabh Tiwari
- Molecular Neurotoxicology and Cell Integrity Laboratory, Systems Toxicology and Health Risk Assessment Group, FEST Division, CSIR-Indian Institute of Toxicology Research (CSIR-IITR), Vishvigyan Bhavan, 31, Mahatma Gandhi Marg, Lucknow, 226001, Uttar Pradesh (U.P.), India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Phoolmala
- Molecular Neurotoxicology and Cell Integrity Laboratory, Systems Toxicology and Health Risk Assessment Group, FEST Division, CSIR-Indian Institute of Toxicology Research (CSIR-IITR), Vishvigyan Bhavan, 31, Mahatma Gandhi Marg, Lucknow, 226001, Uttar Pradesh (U.P.), India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Shweta Goyal
- Molecular Neurotoxicology and Cell Integrity Laboratory, Systems Toxicology and Health Risk Assessment Group, FEST Division, CSIR-Indian Institute of Toxicology Research (CSIR-IITR), Vishvigyan Bhavan, 31, Mahatma Gandhi Marg, Lucknow, 226001, Uttar Pradesh (U.P.), India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Ranjeet Kumar Yadav
- Molecular Neurotoxicology and Cell Integrity Laboratory, Systems Toxicology and Health Risk Assessment Group, FEST Division, CSIR-Indian Institute of Toxicology Research (CSIR-IITR), Vishvigyan Bhavan, 31, Mahatma Gandhi Marg, Lucknow, 226001, Uttar Pradesh (U.P.), India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Rajnish Kumar Chaturvedi
- Molecular Neurotoxicology and Cell Integrity Laboratory, Systems Toxicology and Health Risk Assessment Group, FEST Division, CSIR-Indian Institute of Toxicology Research (CSIR-IITR), Vishvigyan Bhavan, 31, Mahatma Gandhi Marg, Lucknow, 226001, Uttar Pradesh (U.P.), India.
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India.
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5
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Jangid N, Sharma A, Srivastava N. Potential involvement of ferroptosis in BPA-induced neurotoxicity: An in vitro study. ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY 2024; 106:104355. [PMID: 38154758 DOI: 10.1016/j.etap.2023.104355] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/23/2023] [Accepted: 12/22/2023] [Indexed: 12/30/2023]
Abstract
BACKGROUND Ferroptosis is a newly recognized cell death pathway having distinct characteristics compared to traditional cell death pathways such as apoptosis, necroptosis, or autophagy. However, the potential involvement of ferroptosis in bisphenol A (BPA)-induced neurotoxicity has not been well explored so far. In present study, we analyzed the relationship between ferroptosis and BPA-induced neurotoxicity. METHODS In this study, a human neuroblastoma cell line, SH-SY5Y, was treated with BPA, ferrostatin-1 (FS-1, ferroptosis inhibitor) and RSL-3 (ferroptosis inducer). The cell viability was measured using MTT assay. Additionally, the levels of lipid peroxidation, total iron content, reactive oxygen species (ROS) generation, and nitrite content were measured to evaluate the key markers of ferroptosis. To further confirm the involvement of ferroptosis in BPA-induced neurotoxicity, other ferroptosis markers such as glutathione peroxidase (GPx) activity, total glutathione contents and antioxidant parameters were also evaluated. RESULTS The cell viability of SH-SY5Y cells was down-regulated by BPA treatment in a concentration-dependent manner, the cell viability at 0.1 µM concentration was 97.63% whereas at highest BPA concentration i.e. 10 µM, the cell viability was 86.05% (p < 0.0001). Also the antioxidant parameters including catalase and superoxide dismutase activity of neuronal cells were down-regulated upon BPA exposure. However, the levels of lipid peroxidation, total iron, reactive oxygen species, and nitrite contents were increased in a concentration-dependent manner which could be rescued by FS-1 and exacerbated by RSL-3. The total iron in SH-SY5Y cells at 0.1 µM concentration was found to be 1.2 fold (p < 0.05) of control and at highest BPA concentration total iron was about 1.41 fold (p < 0.001) of control. CONCLUSIONS The present study indicated that, ferroptosis plays an important role in the progression of BPA-induced neurotoxicity, and ferroptosis may become a novel target in the treatment of various neurological disorders.
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Affiliation(s)
- Nita Jangid
- Department of Biotechnology, National Institute of Pharmaceutical Education and Research-Raebareli, Bijnor-Sisendi Road, Post Office Mati, Lucknow 226002, India
| | - Ankita Sharma
- Department of Biotechnology, National Institute of Pharmaceutical Education and Research-Raebareli, Bijnor-Sisendi Road, Post Office Mati, Lucknow 226002, India.
| | - Nidhi Srivastava
- Department of Biotechnology, National Institute of Pharmaceutical Education and Research-Raebareli, Bijnor-Sisendi Road, Post Office Mati, Lucknow 226002, India.
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de Souza JS. Thyroid hormone biosynthesis and its role in brain development and maintenance. ADVANCES IN PROTEIN CHEMISTRY AND STRUCTURAL BIOLOGY 2023; 142:329-365. [PMID: 39059990 DOI: 10.1016/bs.apcsb.2023.12.024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/28/2024]
Abstract
Thyroid hormones are critical modulators in the physiological processes necessary to virtually all tissues, with exceptionally fundamental roles in brain development and maintenance. These hormones regulate essential neurodevelopment events, including neuronal migration, synaptogenesis, and myelination. Additionally, thyroid hormones are crucial for maintaining brain homeostasis and cognitive function in adulthood. This chapter aims to offer a comprehensive understanding of thyroid hormone biosynthesis and its intricate role in brain physiology. Here, we described the mechanisms underlying the biosynthesis of thyroid hormones, their influence on various aspects of brain development and ongoing maintenance, and the proteins in the brain that are responsive to these hormones. This chapter was geared towards broadening our understanding of thyroid hormone action in the brain, shedding light on potential therapeutic targets for neurodevelopmental and neurodegenerative disorders.
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Affiliation(s)
- Janaina Sena de Souza
- Department of Pediatrics and Cellular & Molecular Medicine, School of Medicine, University of California San Diego, La Jolla, CA, United States.
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7
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Mu X, Liu Z, Zhao X, Chen L, Jia Q, Wang C, Li T, Guo Y, Qiu J, Qian Y. Bisphenol analogues induced social defects and neural impairment in zebrafish. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 899:166307. [PMID: 37586522 DOI: 10.1016/j.scitotenv.2023.166307] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/01/2023] [Revised: 07/24/2023] [Accepted: 08/12/2023] [Indexed: 08/18/2023]
Abstract
There is evidence in humans that endocrine disrupting chemicals exposure, such as bisphenol A (BPA), is tied to social behavior impacts when evaluated in early life stage. However, the potential social impact of BPA alternatives and its association with central nervous system (CNS) is poorly understood. Here, we performed behavioral test for zebrafish that are continuously exposed to environmental relevant concentrations (5 and 500 ng/L) of BPA, BPF, and BPAF since embryonic stage. Surprisingly, significant social behavior defects, including increased social distance and decreased contact time, were identified in zebrafish treated by 500 ng/L BPAF and BPA. These behavioral changes were accompanied by apparent histological injury, microglia activation, enhanced apoptosis and neuron loss in brain. The gut-brain transcriptional profile showed that genes involved in neuronal development pathways were up-regulated in all bisphenol analogs treatments, indicating a protective phenotype of CNS; however, these pathways were inhibited in gut. Besides, a variety of key regulators in the gut-brain regulation were identified based on protein interaction prediction, such as rac1-limk1, insrb1 and fosab. These findings implicated that the existence of bisphenol analogues in water would influence the social life of fish, and revealed a potential role of gut-brain transcriptional alteration in mediating this effect.
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Affiliation(s)
- Xiyan Mu
- Institute of Quality Standard and Testing Technology for Agro-Products, Chinese Academy of Agricultural Sciences, Beijing, People's Republic of China
| | - Zaiteng Liu
- Institute of Quality Standard and Testing Technology for Agro-Products, Chinese Academy of Agricultural Sciences, Beijing, People's Republic of China
| | - Xiaoyu Zhao
- Institute of Quality Standard and Testing Technology for Agro-Products, Chinese Academy of Agricultural Sciences, Beijing, People's Republic of China
| | - Lu Chen
- Institute of Quality Standard and Testing Technology for Agro-Products, Chinese Academy of Agricultural Sciences, Beijing, People's Republic of China
| | - Qi Jia
- Institute of Quality Standard and Testing Technology for Agro-Products, Chinese Academy of Agricultural Sciences, Beijing, People's Republic of China
| | - Chengju Wang
- College of Sciences, China Agricultural University, Beijing, People's Republic of China
| | - Tiejun Li
- Zhejiang Marine Fisheries Research Institute, China
| | - Yuanming Guo
- Zhejiang Marine Fisheries Research Institute, China
| | - Jing Qiu
- Institute of Quality Standard and Testing Technology for Agro-Products, Chinese Academy of Agricultural Sciences, Beijing, People's Republic of China.
| | - Yongzhong Qian
- Institute of Quality Standard and Testing Technology for Agro-Products, Chinese Academy of Agricultural Sciences, Beijing, People's Republic of China
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8
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Mishra E, Thakur MK. Mdivi-1 Rescues Memory Decline in Scopolamine-Induced Amnesic Male Mice by Ameliorating Mitochondrial Dynamics and Hippocampal Plasticity. Mol Neurobiol 2023; 60:5426-5449. [PMID: 37314656 DOI: 10.1007/s12035-023-03397-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2023] [Accepted: 05/22/2023] [Indexed: 06/15/2023]
Abstract
Memory loss, often known as amnesia, is common in the elderly population and refers to forgetting facts and experiences. It is associated with increased mitochondrial fragmentation, though the contribution of mitochondrial dynamics in amnesia is poorly understood. Therefore, the present study is aimed at elucidating the role of Mdivi-1 in mitochondrial dynamics, hippocampal plasticity, and memory during scopolamine (SC)-induced amnesia. The findings imply that Mdivi-1 significantly increased the expression of Arc and BDNF proteins in the hippocampus of SC-induced amnesic mice, validating improved recognition and spatial memory. Moreover, an improved mitochondrial ultrastructure was attributed to a decline in the percentage of fragmented and spherical-shaped mitochondria after Mdivi-1 treatment in SC-induced mice. The significant downregulation of p-Drp1 (S616) protein and upregulation of Mfn2, LC3BI, and LC3BII proteins in Mdivi-1-treated SC-induced mice indicated a decline in fragmented mitochondrial number and healthy mitochondrial dynamics. Mdivi-1 treatment alleviated ROS production and Caspase-3 activity and elevated mitochondrial membrane potential, Vdac1 expression, ATP production, and myelination, resulting in reduced neurodegeneration in SC mice. Furthermore, the decline of pro-apoptotic protein cytochrome-c and increase of anti-apoptotic proteins Procaspase-9 and Bcl-2 in Mdivi-1-treated SC-induced mice suggested improved neuronal health. Mdivi-1 also increased the dendritic arborization and spine density, which was further corroborated by increased expression of synaptophysin and PSD95. In conclusion, the current study suggests that Mdivi-1 treatment improves mitochondrial ultrastructure and function through the regulation of mitochondrial dynamics. These changes further improve neuronal cell density, myelination, dendritic arborization, and spine density, decrease neurodegeneration, and improve recognition and spatial memory. Schematic presentation depicts that Mdivi-1 rescues memory decline in scopolamine-induced amnesic male mice by ameliorating mitochondrial dynamics and hippocampal plasticity.
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Affiliation(s)
- Ela Mishra
- Biochemistry and Molecular Biology Laboratory, Centre of Advanced Study, Department of Zoology, Institute of Science, Banaras Hindu University, Varanasi, 221 005, India
| | - Mahendra Kumar Thakur
- Biochemistry and Molecular Biology Laboratory, Centre of Advanced Study, Department of Zoology, Institute of Science, Banaras Hindu University, Varanasi, 221 005, India.
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9
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Kim Y, Kim SS, Park BH, Hwang KS, Bae MA, Cho SH, Kim S, Park HC. Mechanism of Bisphenol F Affecting Motor System and Motor Activity in Zebrafish. TOXICS 2023; 11:477. [PMID: 37368577 DOI: 10.3390/toxics11060477] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/05/2023] [Revised: 05/17/2023] [Accepted: 05/22/2023] [Indexed: 06/29/2023]
Abstract
Bisphenol F (BPF; 4,4'-dihydroxydiphenylmethane) is one of the most frequently used compounds in the manufacture of plastics and epoxy resins. Previous studies have demonstrated that BPF affects locomotor behavior, oxidative stress, and neurodevelopment in zebrafish. However, its neurotoxic effects are controversial, and the underlying mechanisms are unclear. In order to determine whether BPF affects the motor system, we exposed zebrafish embryos to BPF and assessed behavioral, histological, and neurochemical changes. Spontaneous locomotor behavior and startle response were significantly decreased in BPF-treated zebrafish larvae compared with control larvae. BPF induced motor degeneration and myelination defects in zebrafish larvae. In addition, embryonic exposure to BPF resulted in altered metabolic profiles of neurochemicals, including neurotransmitters and neurosteroids, which may impact locomotion and motor function. In conclusion, exposure to BPF has the potential to affect survival, motor axon length, locomotor activity, myelination, and neurochemical levels of zebrafish larvae.
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Affiliation(s)
- Yeonhwa Kim
- Zebrafish Translational Medical Research Center, Korea University, Ansan 15588, Republic of Korea
| | - Seong Soon Kim
- Bio & Drug Discovery Division, Korea Research Institute of Chemical Technology (KRICT), Daejeon 34141, Republic of Korea
| | - Byeong Heon Park
- Medical Science Research Center, Ansan Hospital, Korea University, Ansan 15588, Republic of Korea
| | - Kyu-Seok Hwang
- Bio & Drug Discovery Division, Korea Research Institute of Chemical Technology (KRICT), Daejeon 34141, Republic of Korea
| | - Myung Ae Bae
- Bio & Drug Discovery Division, Korea Research Institute of Chemical Technology (KRICT), Daejeon 34141, Republic of Korea
| | - Sung-Hee Cho
- Chemical Analysis Center, Korea Research Institute of Chemical Technology (KRICT), Daejeon 34114, Republic of Korea
| | - Suhyun Kim
- Zebrafish Translational Medical Research Center, Korea University, Ansan 15588, Republic of Korea
- Department of Biomedical Sciences, College of Medicine, Korea University, Seoul 04763, Republic of Korea
| | - Hae-Chul Park
- Zebrafish Translational Medical Research Center, Korea University, Ansan 15588, Republic of Korea
- Department of Biomedical Sciences, College of Medicine, Korea University, Seoul 04763, Republic of Korea
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10
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Bisphenol-A (BPA) Impairs Hippocampal Neurogenesis via Inhibiting Regulation of the Ubiquitin Proteasomal System. Mol Neurobiol 2023; 60:3277-3298. [PMID: 36828952 DOI: 10.1007/s12035-023-03249-3] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2022] [Accepted: 01/24/2023] [Indexed: 02/26/2023]
Abstract
The ubiquitin-proteasome system (UPS) controls protein homeostasis to maintain cell functionality and survival. Neurogenesis relies on proteasome function, and a defective proteasome system during brain development leads to neurological disorders. An endocrine-disrupting xenoestrogen bisphenol-A (BPA) used in plastic products adversely affects human health and causes neurotoxicity. Previously, we reported that BPA reduces neural stem cells (NSCs) proliferation and differentiation, impairs myelination and mitochondrial protein import, and causes excessive mitochondrial fragmentation leading to cognitive impairments in rats. Herein, we examined the effect(s) of prenatal BPA exposure on UPS functions during NSCs proliferation and differentiation in the hippocampus. Rats were orally treated with 40 µg/kg body weight BPA during day 6 gestation to day 21 postnatal. BPA significantly reduced proteasome activity in a cellular extract of NSCs. Immunocytochemistry exhibited a significant reduction of 20S proteasome/Nestin+ and PSMB5/Nestin+ cells in NSCs culture. BPA decreased 20S/Tuj1+ and PSMB5/Tuj1+ cells, indicating disrupted UPS during neuronal differentiation. BPA reduced the expression of UPS genes, 20S, and PSMB5 protein levels and proteasome activity in the hippocampus. It significantly reduced overall protein synthesis by the loss of Nissl substances in the hippocampus. Pharmacological activation of UPS by a bioactive triterpenoid 18α-glycyrrhetinic acid (18α GA) caused increased proteasome activities, significantly increased neurosphere size and number, and enhanced NSCs proliferation in BPA exposed culture, while proteasome inhibition by MG132 further aggravates BPA-mediated effects. In silico studies demonstrated that BPA strongly binds to catalytic sites of UPS genes (PSMB5, TRIM11, Parkin, and PSMD4) which may result in UPS inactivation. These results suggest that BPA significantly reduces NSCs proliferation by impairing UPS, and UPS activation by 18α GA could suppress BPA-mediated neurotoxicity and exerts neuroprotection.
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Vancamp P, Butruille L, Herranen A, Boelen A, Fini JB, Demeneix BA, Remaud S. Transient developmental exposure to low doses of bisphenol F negatively affects neurogliogenesis and olfactory behaviour in adult mice. ENVIRONMENT INTERNATIONAL 2023; 172:107770. [PMID: 36706583 DOI: 10.1016/j.envint.2023.107770] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/26/2022] [Revised: 01/18/2023] [Accepted: 01/18/2023] [Indexed: 06/18/2023]
Abstract
Neural stem cells in the murine subventricular zone (SVZ) reactivate during postnatal development to generate neurons and glia throughout adulthood. We previously demonstrated that a postnatal thyroid hormone (TH) peak orchestrates this remodelling, rendering this process vulnerable to endocrine disruption. We exposed mice to 2 or 200 µg/kg bw/day of the bisphenol A-replacement and suspected TH-disruptor bisphenol F (BPF) in the drinking water, from embryonic day 15 to postnatal day 21 (P21). In parallel, one group was exposed to the TH-synthesis blocker propylthiouracil (0.15 % PTU). In contrast to PTU, BPF exposure did not affect serum TH levels at P15, P21 or P60. RNA-seq on dissected SVZs at P15 revealed dysregulated neurodevelopmental genes in all treatments, although few overlapped amongst the conditions. We then investigated the phenotype at P60 to analyse long-term consequences of transient developmental exposure. As opposed to hypothyroid conditions, and despite dysregulated oligodendrogenesis-promoting genes in the P15 SVZ exposed to the highest dose of BPF, immunostainings for myelin and OLIG2/CC1 showed no impact on global myelin content nor oligodendrocyte maturation in the P60 corpus callosum, apart from a reduced thickness. The highest dose did reduce numbers of newly generated SVZ-neuroblasts with 22 %. Related to this were behavioural alterations. P60 mice previously exposed to the highest BPF dose memorized an odour less well than control animals did, although they performed better than PTU-exposed animals. All mice could discriminate new odours, but all exposed groups showed less interest in social odours. Our data indicate that perinatal exposure to low doses of BPF disrupts postnatal murine SVZ remodelling, and lowers the adult neuron/oligodendroglia output, even after exposure had been absent for 40 days. These anomalies warrant further investigation on the potential harm of alternative bisphenol compounds for human foetal brain development.
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Affiliation(s)
- Pieter Vancamp
- Laboratory Molecular Physiology and Adaptation, CNRS UMR 7221, Department Adaptations of Life, Muséum National d'Histoire Naturelle, F-75005 Paris, France
| | - Lucile Butruille
- Laboratory Molecular Physiology and Adaptation, CNRS UMR 7221, Department Adaptations of Life, Muséum National d'Histoire Naturelle, F-75005 Paris, France
| | - Anni Herranen
- Laboratory Molecular Physiology and Adaptation, CNRS UMR 7221, Department Adaptations of Life, Muséum National d'Histoire Naturelle, F-75005 Paris, France
| | - Anita Boelen
- Endocrine Laboratory, Department of Clinical Chemistry, Amsterdam UMC, University of Amsterdam, 1105 Amsterdam, the Netherlands
| | - Jean-Baptiste Fini
- Laboratory Molecular Physiology and Adaptation, CNRS UMR 7221, Department Adaptations of Life, Muséum National d'Histoire Naturelle, F-75005 Paris, France
| | - Barbara A Demeneix
- Laboratory Molecular Physiology and Adaptation, CNRS UMR 7221, Department Adaptations of Life, Muséum National d'Histoire Naturelle, F-75005 Paris, France
| | - Sylvie Remaud
- Laboratory Molecular Physiology and Adaptation, CNRS UMR 7221, Department Adaptations of Life, Muséum National d'Histoire Naturelle, F-75005 Paris, France.
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Bisphenol A exposure links to exacerbation of memory and cognitive impairment: A systematic review of the literature. Neurosci Biobehav Rev 2022; 143:104939. [DOI: 10.1016/j.neubiorev.2022.104939] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2022] [Revised: 10/26/2022] [Accepted: 10/27/2022] [Indexed: 11/05/2022]
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Goyal S, Tiwari S, Seth B, Phoolmala, Tandon A, Kumar Chaturvedi R. Bisphenol-A Mediated Impaired DRP1-GFER Axis and Cognition Restored by PGC-1α Upregulation Through Nicotinamide in the Rat Brain Hippocampus. Mol Neurobiol 2022; 59:4761-4775. [PMID: 35612786 DOI: 10.1007/s12035-022-02862-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2022] [Accepted: 04/28/2022] [Indexed: 10/18/2022]
Abstract
The regulatory network of mitochondrial biogenesis and dynamics is vital for mitochondrial functions and cellular homeostasis. Any impairment in the mitochondrial network leads to neurodegenerative disorders. Our earlier studies suggest that environmental toxicant Bisphenol-A (BPA) exposure reduces neurogenesis by abnormal mitochondrial dynamics and mitochondrial biogenesis through impairment of mitochondrial fission factor dynamin-related protein (DRP1) and mitochondrial import protein GFER, which leads to demyelination, neurodegeneration, and cognitive deficits in the rats. In the present study, we found that chronic BPA exposure reduces PGC-1α levels (master regulator of mitochondrial biogenesis), alters mitochondrial localization of DRP1 and GFER, and reduces the number of PGC-1α/NeuN+ and PGC-1α/β-tubulin+ neurons in the rat hippocampus, suggesting reduced PGC-1α-mediated neurogenesis. Nicotinamide significantly increased PGC-1α protein levels, PGC-1α/NeuN+ co-labeled cells in BPA-treated rat hippocampus and PGC-1α/β-tubulin+ co-labeled cells in neuron culture derived from hippocampal neural stem cells. Interestingly, PGC-1α upregulation by nicotinamide also resulted in increased GFER levels and restored mitochondrial localization of GFER (increased GFER/TOMM20 co-labeled cells) in vitro and in vivo following BPA treatment. Nicotinamide also reduced DRP1 levels and prevented DRP1 mitochondrial localization in BPA-treated neuronal cultures and hippocampus, suggesting reduced mitochondrial fission. This resulted in reduced cytochrome c levels in neuronal culture and reduced hippocampal neurodegeneration (reduced caspase-3/NeuN+ co-labeled neurons) following nicotinamide treatment in BPA-treated group. Consequently, activation of PGC-1α by nicotinamide restored BPA-mediated cognitive deficits in rats. Results suggest that the treatment of nicotinamide has therapeutic potential and rescues BPA-mediated neuronal death and cognitive deficits by upregulating the PGC-1α and GFER-DRP1 link, thus balancing mitochondrial homeostasis.
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Affiliation(s)
- Shweta Goyal
- Molecular Neurotoxicology and Cell Integrity Laboratory, Systems Toxicology and Health Risk Assessment Group, CSIR-Indian Institute of Toxicology Research (CSIR-IITR), Vishvigyan Bhavan, 31, Mahatma Gandhi Marg, Lucknow, Uttar Pradesh, 226001, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Saurabh Tiwari
- Molecular Neurotoxicology and Cell Integrity Laboratory, Systems Toxicology and Health Risk Assessment Group, CSIR-Indian Institute of Toxicology Research (CSIR-IITR), Vishvigyan Bhavan, 31, Mahatma Gandhi Marg, Lucknow, Uttar Pradesh, 226001, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Brashket Seth
- Molecular Neurotoxicology and Cell Integrity Laboratory, Systems Toxicology and Health Risk Assessment Group, CSIR-Indian Institute of Toxicology Research (CSIR-IITR), Vishvigyan Bhavan, 31, Mahatma Gandhi Marg, Lucknow, Uttar Pradesh, 226001, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Phoolmala
- Molecular Neurotoxicology and Cell Integrity Laboratory, Systems Toxicology and Health Risk Assessment Group, CSIR-Indian Institute of Toxicology Research (CSIR-IITR), Vishvigyan Bhavan, 31, Mahatma Gandhi Marg, Lucknow, Uttar Pradesh, 226001, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Ankit Tandon
- Molecular Neurotoxicology and Cell Integrity Laboratory, Systems Toxicology and Health Risk Assessment Group, CSIR-Indian Institute of Toxicology Research (CSIR-IITR), Vishvigyan Bhavan, 31, Mahatma Gandhi Marg, Lucknow, Uttar Pradesh, 226001, India
- Department of Biochemistry, School of Dental Sciences, Babu Banarasi Das University, BBD City, Faizabad Road, Lucknow, 226 028, U.P, India
| | - Rajnish Kumar Chaturvedi
- Molecular Neurotoxicology and Cell Integrity Laboratory, Systems Toxicology and Health Risk Assessment Group, CSIR-Indian Institute of Toxicology Research (CSIR-IITR), Vishvigyan Bhavan, 31, Mahatma Gandhi Marg, Lucknow, Uttar Pradesh, 226001, India.
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India.
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Mu X, Liu J, Wang H, Yuan L, Wang C, Li Y, Qiu J. Bisphenol F Impaired Zebrafish Cognitive Ability through Inducing Neural Cell Heterogeneous Responses. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2022; 56:8528-8540. [PMID: 35616434 DOI: 10.1021/acs.est.2c01531] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
The central nervous system (CNS) is a sensitive target for endocrine-disrupting chemicals, such as bisphenol analogues. Bisphenol A (BPA) usage is associated with the occurrence of many neurological diseases. With the restricted use of BPA, bisphenol F (BPF) has been greatly introduced for industrial manufacture and brings new hazards to public CNS health. To understand how BPF affects the neural system, we performed a cognitive test for zebrafish that are continuously exposed to environmentally relevant concentrations (0.5 and 5.0 μg/L) of BPF since embryonic stage and identified suppressed cognitive ability in adulthood. Single-cell RNA sequencing of neural cells revealed a cell composition shift in zebrafish brain post BPF exposure, including increase in microglia and decrease in neurons; these changes were further validated by immune staining. At the same time, a significant inflammatory response and increased phagocytic activity were detected in zebrafish brain post BPF exposure, which were consistent with the activation of microglia. Cell-specific transcriptomic profiles showed that abnormal phagocytosis, activated brain cell death, and apoptosis occurred in microglia post BPF exposure, which are responsible for the neuron loss. In addition, certain neurological diseases were affected by BPF in both excitatory and inhibitory neurons, such as the movement disorder and neural muscular disease, however, with distinctly involved genes. These findings indicate that BPF exposure could lead to an abnormal cognitive behavior of zebrafish through inducing heterogeneous changes of neural cells in brain and revealed the dominating role of microglia in mediating this effect.
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Affiliation(s)
- Xiyan Mu
- Institute of Quality Standard and Testing Technology for Agro-Products, Chinese Academy of Agricultural Sciences, Beijing 100098, People's Republic of China
- Fishery Resource and Environment Research Center, Chinese Academy of Fishery Sciences, Beijing 100141, People's Republic of China
| | - Jia Liu
- Fishery Resource and Environment Research Center, Chinese Academy of Fishery Sciences, Beijing 100141, People's Republic of China
| | - Hui Wang
- Fishery Resource and Environment Research Center, Chinese Academy of Fishery Sciences, Beijing 100141, People's Republic of China
| | - Lilai Yuan
- Fishery Resource and Environment Research Center, Chinese Academy of Fishery Sciences, Beijing 100141, People's Republic of China
| | - Chengju Wang
- College of Science, China Agricultural University, Beijing 100193, People's Republic of China
| | - Yingren Li
- Fishery Resource and Environment Research Center, Chinese Academy of Fishery Sciences, Beijing 100141, People's Republic of China
| | - Jing Qiu
- Institute of Quality Standard and Testing Technology for Agro-Products, Chinese Academy of Agricultural Sciences, Beijing 100098, People's Republic of China
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Naffaa V, Hochar I, Lama C, Magny R, Regazzetti A, Gressens P, Laprévote O, Auzeil N, Schang AL. Bisphenol A Impairs Lipid Remodeling Accompanying Cell Differentiation in the Oligodendroglial Cell Line Oli-Neu. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27072274. [PMID: 35408676 PMCID: PMC9000593 DOI: 10.3390/molecules27072274] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/17/2022] [Revised: 03/11/2022] [Accepted: 03/25/2022] [Indexed: 12/04/2022]
Abstract
In the central nervous system, the process of myelination involves oligodendrocytes that wrap myelin around axons. Myelin sheaths are mainly composed of lipids and ensure efficient conduction of action potentials. Oligodendrocyte differentiation is an essential preliminary step to myelination which, in turn, is a key event of neurodevelopment. Bisphenol A (BPA), a ubiquitous endocrine disruptor, is suspected to disrupt this developmental process and may, thus, contribute to several neurodevelopmental disorders. In this study, we assessed the effect of BPA on oligodendrocyte differentiation through a comprehensive analysis of cell lipidome by UHPLC-HRMS. For this purpose, we exposed the oligodendroglial cell line Oli-neu to several BPA concentrations for 72 h of proliferation and another 72 h of differentiation. In unexposed cells, significant changes occurred in lipid distribution during Oli-neu differentiation, including an increase in characteristic myelin lipids, sulfatides, and ethanolamine plasmalogens, and a marked remodeling of phospholipid subclasses and fatty acid contents. Moreover, BPA induced a decrease in sulfatide and phosphatidylinositol plasmalogen contents and modified monounsaturated/polyunsaturated fatty acid relative contents in phospholipids. These effects counteracted the lipid remodeling accompanying differentiation and were confirmed by gene expression changes. Altogether, our results suggest that BPA disrupts lipid remodeling accompanying early oligodendrocyte differentiation.
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Affiliation(s)
- Vanessa Naffaa
- CiTCoM, CNRS, Université Paris Cité, 75006 Paris, France; (V.N.); (I.H.); (C.L.); (R.M.); (A.R.); (O.L.); (N.A.)
| | - Isabelle Hochar
- CiTCoM, CNRS, Université Paris Cité, 75006 Paris, France; (V.N.); (I.H.); (C.L.); (R.M.); (A.R.); (O.L.); (N.A.)
| | - Chéryane Lama
- CiTCoM, CNRS, Université Paris Cité, 75006 Paris, France; (V.N.); (I.H.); (C.L.); (R.M.); (A.R.); (O.L.); (N.A.)
| | - Romain Magny
- CiTCoM, CNRS, Université Paris Cité, 75006 Paris, France; (V.N.); (I.H.); (C.L.); (R.M.); (A.R.); (O.L.); (N.A.)
- INSERM UMR 968, CNRS UMR 7210, Institut de la Vision, IHU ForeSight, Sorbonne Université UM80, 75012 Paris, France
| | - Anne Regazzetti
- CiTCoM, CNRS, Université Paris Cité, 75006 Paris, France; (V.N.); (I.H.); (C.L.); (R.M.); (A.R.); (O.L.); (N.A.)
| | - Pierre Gressens
- NeuroDiderot, Inserm, Université Paris Cité, 75019 Paris, France;
| | - Olivier Laprévote
- CiTCoM, CNRS, Université Paris Cité, 75006 Paris, France; (V.N.); (I.H.); (C.L.); (R.M.); (A.R.); (O.L.); (N.A.)
- Hôpital Européen Georges Pompidou, AP-HP, Service de Biochimie, 75015 Paris, France
| | - Nicolas Auzeil
- CiTCoM, CNRS, Université Paris Cité, 75006 Paris, France; (V.N.); (I.H.); (C.L.); (R.M.); (A.R.); (O.L.); (N.A.)
| | - Anne-Laure Schang
- UMR 1153 CRESS, Université Paris Cité, 75004 Paris, France
- Correspondence:
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Thymoquinone Improved Nonylphenol-Induced Memory Deficit and Neurotoxicity Through Its Antioxidant and Neuroprotective Effects. Mol Neurobiol 2022; 59:3600-3616. [PMID: 35355194 DOI: 10.1007/s12035-022-02807-5] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2021] [Accepted: 03/17/2022] [Indexed: 12/27/2022]
Abstract
Nonylphenol (NP), a well-known endocrine-disrupter chemical, has several harmful effects on the central nervous system including neuroendocrine disruption, cognitive impairment, and neurotoxicity. Thymoquinone (TQ) is a main bioactive compound in the black seeds of Nigella sativa that has antioxidant, anti-inflammatory, and neuroprotective properties. Here, we investigated the neuroprotective effect of TQ against NP-induced memory deficit and neurotoxicity in rats. To induce memory impairment, NP (25 mg/kg) was used as gavage in male Wistar rats for 21 days. TQ (2.5, 5, and 10 mg/kg) was intraperitoneally administered in NP-treated animals. The morris water maze test was performed to assess spatial learning and memory. The hippocampal tissues were isolated from the brain for histopathological evaluation. Biochemical, molecular, and cellular tests were performed to quantify oxidant (malondialdehyde; MDA)/antioxidant (superoxide dismutase (SOD), total antioxidant capacity (TAC), and reduced glutathione (GSH) parameters) as well as markers for astrocytic activation (glial fibrillary acidic protein; GFAP) and neuronal death (alpha-synuclein; α-syn). Results showed TQ (5 mg/kg) significantly improved NP-induced memory impairment. Histological data revealed a significant increase in the number of necrotic cells in hippocampus, and TQ treatment markedly decreased this effect. The GSH and TAC levels were significantly increased in TQ-treated groups compared to NP group. The molecular analysis indicated that NP increased GFAP and decreased α-syn expression and TQ treatment did the reverse. In vitro study in astrocytes isolated from mice brain showed that TQ significantly increased cell viability in NP-induced cytotoxicity. This study strongly indicates that TQ has neuroprotective effects on NP-induced neurotoxicity through reducing oxidative damages and neuroinflammation. This study investigates the behavioral neurotoxicity induced by Nonylphenol (NP) and the protective effects of Thymoquinone (TQ) as a potent antioxidant compound using molecular, cell culture, histopathological and biochemical techniques.
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Sun H, Yang H, Wu Y, Bian H, Wang M, Huang Y, Jin J. iRhom1 rescues cognitive dysfunction in multiple sclerosis via preventing myelin injury. GENES BRAIN AND BEHAVIOR 2021; 20:e12771. [PMID: 34672089 DOI: 10.1111/gbb.12771] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/20/2021] [Revised: 09/03/2021] [Accepted: 09/03/2021] [Indexed: 11/29/2022]
Abstract
Multiple sclerosis (MS) is characterized by myelin sheath injury. A disintegrin and metalloprotease-17 (ADAM17), a disintegrin and metalloproteinase, is essential in regulating oligodendrocyte (OL) regeneration and remyelination under demyelinating conditions. iRhom1, a highly conserved inactive protease that belongs to the rhomboid family, is one of key regulators for ADAM17 maturation. However, it is unknown whether iRhom1 also plays a role in central neuron system myelination under demyelinating conditions like MS. In this study, we investigated the function of iRhom1/ADAM17 in cognitive capability in MS by establishing the mice with iRhom1 overexpression in the hippocampus.
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Affiliation(s)
- Haolu Sun
- School of Basic Medical Sciences, Anhui Medical University, Hefei, China
| | - Hui Yang
- School of Basic Medical Sciences, Anhui Medical University, Hefei, China
| | - Yiwang Wu
- School of Basic Medical Sciences, Anhui Medical University, Hefei, China
| | - Hege Bian
- School of Basic Medical Sciences, Anhui Medical University, Hefei, China
| | - Menglin Wang
- School of Basic Medical Sciences, Anhui Medical University, Hefei, China
| | - Yan Huang
- School of Pharmacy, Anhui Medical University, Hefei, China
| | - Juan Jin
- School of Basic Medical Sciences, Anhui Medical University, Hefei, China
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Chesnut M, Paschoud H, Repond C, Smirnova L, Hartung T, Zurich MG, Hogberg HT, Pamies D. Human IPSC-Derived Model to Study Myelin Disruption. Int J Mol Sci 2021; 22:9473. [PMID: 34502381 PMCID: PMC8430601 DOI: 10.3390/ijms22179473] [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: 07/29/2021] [Revised: 08/27/2021] [Accepted: 08/28/2021] [Indexed: 12/15/2022] Open
Abstract
Myelin is of vital importance to the central nervous system and its disruption is related to a large number of both neurodevelopmental and neurodegenerative diseases. The differences observed between human and rodent oligodendrocytes make animals inadequate for modeling these diseases. Although developing human in vitro models for oligodendrocytes and myelinated axons has been a great challenge, 3D cell cultures derived from iPSC are now available and able to partially reproduce the myelination process. We have previously developed a human iPSC-derived 3D brain organoid model (also called BrainSpheres) that contains a high percentage of myelinated axons and is highly reproducible. Here, we have further refined this technology by applying multiple readouts to study myelination disruption. Myelin was assessed by quantifying immunostaining/confocal microscopy of co-localized myelin basic protein (MBP) with neurofilament proteins as well as proteolipid protein 1 (PLP1). Levels of PLP1 were also assessed by Western blot. We identified compounds capable of inducing developmental neurotoxicity by disrupting myelin in a systematic review to evaluate the relevance of our BrainSphere model for the study of the myelination/demyelination processes. Results demonstrated that the positive reference compound (cuprizone) and two of the three potential myelin disruptors tested (Bisphenol A, Tris(1,3-dichloro-2-propyl) phosphate, but not methyl mercury) decreased myelination, while ibuprofen (negative control) had no effect. Here, we define a methodology that allows quantification of myelin disruption and provides reference compounds for chemical-induced myelin disruption.
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Affiliation(s)
- Megan Chesnut
- Center for Alternatives to Animal Testing (CAAT), Johns Hopkins Bloomberg School of Public Health, 615 N Wolfe St., Baltimore, MD 21205, USA; (M.C.); (L.S.); (T.H.)
| | - Hélène Paschoud
- Department of Biomedical Sciences, University of Lausanne, CH-1005 Lausanne, Switzerland; (H.P.); (C.R.); (M.-G.Z.)
| | - Cendrine Repond
- Department of Biomedical Sciences, University of Lausanne, CH-1005 Lausanne, Switzerland; (H.P.); (C.R.); (M.-G.Z.)
| | - Lena Smirnova
- Center for Alternatives to Animal Testing (CAAT), Johns Hopkins Bloomberg School of Public Health, 615 N Wolfe St., Baltimore, MD 21205, USA; (M.C.); (L.S.); (T.H.)
| | - Thomas Hartung
- Center for Alternatives to Animal Testing (CAAT), Johns Hopkins Bloomberg School of Public Health, 615 N Wolfe St., Baltimore, MD 21205, USA; (M.C.); (L.S.); (T.H.)
- Center for Alternative to Animla Testing Europe, University of Konstanz, 78464 Konstanz, Germany
| | - Marie-Gabrielle Zurich
- Department of Biomedical Sciences, University of Lausanne, CH-1005 Lausanne, Switzerland; (H.P.); (C.R.); (M.-G.Z.)
- Swiss Centre for Applied Human Toxicology (SCAHT), 4055 Basel, Switzerland
| | - Helena T. Hogberg
- Center for Alternatives to Animal Testing (CAAT), Johns Hopkins Bloomberg School of Public Health, 615 N Wolfe St., Baltimore, MD 21205, USA; (M.C.); (L.S.); (T.H.)
| | - David Pamies
- Center for Alternatives to Animal Testing (CAAT), Johns Hopkins Bloomberg School of Public Health, 615 N Wolfe St., Baltimore, MD 21205, USA; (M.C.); (L.S.); (T.H.)
- Department of Biomedical Sciences, University of Lausanne, CH-1005 Lausanne, Switzerland; (H.P.); (C.R.); (M.-G.Z.)
- Swiss Centre for Applied Human Toxicology (SCAHT), 4055 Basel, Switzerland
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Goyal S, Tiwari S, Seth B, Tandon A, Shankar J, Sinha M, Singh SJ, Priya S, Chaturvedi RK. Bisphenol-A inhibits mitochondrial biogenesis via impairment of GFER mediated mitochondrial protein import in the rat brain hippocampus. Neurotoxicology 2021; 85:18-32. [PMID: 33878312 DOI: 10.1016/j.neuro.2021.04.001] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2021] [Revised: 04/05/2021] [Accepted: 04/06/2021] [Indexed: 12/22/2022]
Abstract
Mitochondrial biogenesis relies on different protein import machinery, as mitochondrial proteins are imported from the cytosol. The mitochondrial intermembrane space assembly (MIA) pathway consists of GFER/ALR and CHCHD4/Mia40, responsible for importing proteins and their oxidative folding inside the mitochondria. The MIA pathway plays an essential role in complex IV (COX IV) biogenesis via importing copper chaperone COX17, associated with the respiratory chain. BPA, an environmental toxicant, found in consumable plastics, causes neurotoxicity via impairment in mitochondrial dynamics, neurogenesis, and cognitive functions. We studied the levels of key regulatory proteins of mitochondrial import pathways and mitochondrial biogenesis after BPA exposure in the rat hippocampus. BPA caused a significant reduction in the levels of mitochondrial biogenesis proteins (PGC1α, and TFAM) and mitochondrial import protein (GFER). Immunohistochemical analysis showed reduced co-localization of NeuN with GFER, PGC-1α, and TFAM suggesting impaired mitochondrial biogenesis and protein import. BPA exposure resulted in damaged mitochondria with distorted cristae in neurons and caused a significant reduction in GFER localization inside IMS as depicted by immunogold electron microscopy. The reduced levels of GFER resulted in defective COX17 import. The translocation of cytochrome c into the cytosol and increased cleaved caspase-3 levels triggered apoptosis due to BPA toxicity. Overall, our study implicates GFER as a potential target for impaired mitochondrial protein machinery, biogenesis, and apoptosis against BPA neurotoxicity in the rat hippocampus.
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Affiliation(s)
- Shweta Goyal
- Developmental Toxicology Laboratory, Systems Toxicology and Health Risk Assessment Group, CSIR-Indian Institute of Toxicology Research (CSIR-IITR), Vishvigyan Bhavan, 31, Mahatma Gandhi Marg, Lucknow, Uttar Pradesh, 226001, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Saurabh Tiwari
- Developmental Toxicology Laboratory, Systems Toxicology and Health Risk Assessment Group, CSIR-Indian Institute of Toxicology Research (CSIR-IITR), Vishvigyan Bhavan, 31, Mahatma Gandhi Marg, Lucknow, Uttar Pradesh, 226001, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Brashket Seth
- Developmental Toxicology Laboratory, Systems Toxicology and Health Risk Assessment Group, CSIR-Indian Institute of Toxicology Research (CSIR-IITR), Vishvigyan Bhavan, 31, Mahatma Gandhi Marg, Lucknow, Uttar Pradesh, 226001, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Ankit Tandon
- Developmental Toxicology Laboratory, Systems Toxicology and Health Risk Assessment Group, CSIR-Indian Institute of Toxicology Research (CSIR-IITR), Vishvigyan Bhavan, 31, Mahatma Gandhi Marg, Lucknow, Uttar Pradesh, 226001, India; Department of Biochemistry, School of Dental Sciences, Babu Banarasi Das University, BBD City, Faizabad Road, Lucknow, U.P, 226 028, India
| | - Jai Shankar
- Advanced Imaging Facility, CSIR-IITR, Lucknow, India
| | - Meetali Sinha
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India; Computational Toxicology Facility, CSIR-IITR, Lucknow, India
| | - Sangh Jyoti Singh
- Developmental Toxicology Laboratory, Systems Toxicology and Health Risk Assessment Group, CSIR-Indian Institute of Toxicology Research (CSIR-IITR), Vishvigyan Bhavan, 31, Mahatma Gandhi Marg, Lucknow, Uttar Pradesh, 226001, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Smriti Priya
- Developmental Toxicology Laboratory, Systems Toxicology and Health Risk Assessment Group, CSIR-Indian Institute of Toxicology Research (CSIR-IITR), Vishvigyan Bhavan, 31, Mahatma Gandhi Marg, Lucknow, Uttar Pradesh, 226001, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Rajnish Kumar Chaturvedi
- Developmental Toxicology Laboratory, Systems Toxicology and Health Risk Assessment Group, CSIR-Indian Institute of Toxicology Research (CSIR-IITR), Vishvigyan Bhavan, 31, Mahatma Gandhi Marg, Lucknow, Uttar Pradesh, 226001, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India.
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20
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Gill S, Kumara VMR. Comparative Neurodevelopment Effects of Bisphenol A and Bisphenol F on Rat Fetal Neural Stem Cell Models. Cells 2021; 10:793. [PMID: 33918242 PMCID: PMC8103521 DOI: 10.3390/cells10040793] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2021] [Revised: 03/23/2021] [Accepted: 03/30/2021] [Indexed: 12/19/2022] Open
Abstract
Bisphenol A (BPA) is considered as one of the most extensively synthesized and used chemicals for industrial and consumer products. Previous investigations have established that exposure to BPA has been linked to developmental, reproductive, cardiovascular, immune, and metabolic effects. Several jurisdictions have imposed restrictions and/or have banned the use of BPA in packaging material and other consumer goods. Hence, manufacturers have replaced BPA with its analogues that have a similar chemical structure. Some of these analogues have shown similar endocrine effects as BPA, while others have not been assessed. In this investigation, we compared the neurodevelopmental effects of BPA and its major replacement Bisphenol F (BPF) on rat fetal neural stem cells (rNSCs). rNSCs were exposed to cell-specific differentiation media with non-cytotoxic doses of BPA or BPF at the range of 0.05 M to 100 M concentrations and measured the degree of cell proliferation, differentiation, and morphometric parameters. Both of these compounds increased cell proliferation and impacted the differentiation rates of oligodendrocytes and neurons, in a concentration-dependent manner. Further, there were concentration-dependent decreases in the maturation of oligodendrocytes and neurons, with a concomitant increase in immature oligodendrocytes and neurons. In contrast, neither BPA nor BPF had any overall effect on cellular proliferation or the cytotoxicity of astrocytes. However, there was a concentration-dependent increase in astrocyte differentiation and morphological changes. Morphometric analysis for the astrocytes, oligodendrocytes, and neurons showed a reduction in the arborization. These data show that fetal rNSCs exposed to either BPA or BPF lead to comparable changes in the cellular differentiation, proliferation, and arborization processes.
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Affiliation(s)
- Santokh Gill
- Regulatory Toxicology Research Division, Health Products and Food Branch, Tunney’s Pasture, Health Canada, 251 Sir Frederick Banting Driveway, Ottawa, ON K1A 0K9, Canada;
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21
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Bustamante-Barrientos FA, Méndez-Ruette M, Ortloff A, Luz-Crawford P, Rivera FJ, Figueroa CD, Molina L, Bátiz LF. The Impact of Estrogen and Estrogen-Like Molecules in Neurogenesis and Neurodegeneration: Beneficial or Harmful? Front Cell Neurosci 2021; 15:636176. [PMID: 33762910 PMCID: PMC7984366 DOI: 10.3389/fncel.2021.636176] [Citation(s) in RCA: 73] [Impact Index Per Article: 24.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2020] [Accepted: 02/10/2021] [Indexed: 12/19/2022] Open
Abstract
Estrogens and estrogen-like molecules can modify the biology of several cell types. Estrogen receptors alpha (ERα) and beta (ERβ) belong to the so-called classical family of estrogen receptors, while the G protein-coupled estrogen receptor 1 (GPER-1) represents a non-classical estrogen receptor mainly located in the plasma membrane. As estrogen receptors are ubiquitously distributed, they can modulate cell proliferation, differentiation, and survival in several tissues and organs, including the central nervous system (CNS). Estrogens can exert neuroprotective roles by acting as anti-oxidants, promoting DNA repair, inducing the expression of growth factors, and modulating cerebral blood flow. Additionally, estrogen-dependent signaling pathways are involved in regulating the balance between proliferation and differentiation of neural stem/progenitor cells (NSPCs), thus influencing neurogenic processes. Since several estrogen-based therapies are used nowadays and estrogen-like molecules, including phytoestrogens and xenoestrogens, are omnipresent in our environment, estrogen-dependent changes in cell biology and tissue homeostasis have gained attention in human health and disease. This article provides a comprehensive literature review on the current knowledge of estrogen and estrogen-like molecules and their impact on cell survival and neurodegeneration, as well as their role in NSPCs proliferation/differentiation balance and neurogenesis.
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Affiliation(s)
- Felipe A Bustamante-Barrientos
- Immunology Program, Centro de Investigación e Innovación Biomédica (CiiB), Universidad de los Andes, Santiago, Chile.,Cells for Cells, Santiago, Chile
| | - Maxs Méndez-Ruette
- Neuroscience Program, Centro de Investigación e Innovación Biomédica (CiiB), Universidad de los Andes, Santiago, Chile
| | - Alexander Ortloff
- Departamento de Ciencias Veterinarias y Salud Pública, Facultad de Recursos Naturales, Universidad Católica de Temuco, Temuco, Chile
| | - Patricia Luz-Crawford
- Immunology Program, Centro de Investigación e Innovación Biomédica (CiiB), Universidad de los Andes, Santiago, Chile.,Facultad de Medicina, School of Medicine, Universidad de los Andes, Santiago, Chile
| | - Francisco J Rivera
- Laboratory of Stem Cells and Neuroregeneration, Faculty of Medicine, Institute of Anatomy, Histology and Pathology, Universidad Austral de Chile, Valdivia, Chile.,Center for Interdisciplinary Studies on the Nervous System (CISNe), Universidad Austral de Chile, Valdivia, Chile.,Institute of Molecular Regenerative Medicine, Paracelsus Medical University, Salzburg, Austria.,Spinal Cord Injury and Tissue Regeneration Center Salzburg (SCI-TReCS), Paracelsus Medical University, Salzburg, Austria
| | - Carlos D Figueroa
- Center for Interdisciplinary Studies on the Nervous System (CISNe), Universidad Austral de Chile, Valdivia, Chile.,Laboratory of Cellular Pathology, Institute of Anatomy, Histology and Pathology, Facultad de Medicina, Universidad Austral de Chile, Valdivia, Chile
| | - Luis Molina
- Facultad de Medicina y Ciencia, Universidad San Sebastián, Puerto Montt, Chile
| | - Luis Federico Bátiz
- Neuroscience Program, Centro de Investigación e Innovación Biomédica (CiiB), Universidad de los Andes, Santiago, Chile.,Facultad de Medicina, School of Medicine, Universidad de los Andes, Santiago, Chile
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22
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Sharif K, Kurnick A, Coplan L, Alexander M, Watad A, Amital H, Shoenfeld Y. The Putative Adverse Effects of Bisphenol A on Autoimmune Diseases. Endocr Metab Immune Disord Drug Targets 2021; 22:665-676. [PMID: 33568039 DOI: 10.2174/1871530321666210210154309] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/06/2020] [Revised: 12/11/2020] [Accepted: 12/18/2020] [Indexed: 11/22/2022]
Abstract
Bisphenol A (BPA) is a monomer that is widely used in the manufacture of polycarbonate plastics including storage plastics and baby bottles, and is considered one of the most widely used synthetic compounds in the manufacturing industry. Exposure to BPA mainly occurs after oral ingestion and results from leaks into food and water from plastic containers and according to epidemiological data exposure is widespread and estimated to occur in 90% of individuals. BPA exertspleiotropiceffects and demonstrates estrogen like effects, thus considered an endocrine disrupting chemical. Growing body of evidence highlight the role of BPA in modulating immune responses and signaling pathways resulting in a proinflammatory response by enhancing the differential polarization of immune cells and cytokine production profile to one that is consistent with proinflammation. Indeed, epidemiological studies have uncovered associations between several autoimmune diseases and BPA exposure. Data from animal models provided consistent evidence highlighting the role of BPA in the pathogenesis, exacerbation and perpetuation of various autoimmune phenomena including neuroinflammation in the context of multiple sclerosis, colitis in inflammatory bowel disease, nephritis in systemic lupus erythematosus, and insulitis in type 1 diabetes mellitus. Given the wide spread of BPA use and its effects in immune systemdysregulation, a call for careful assessment of patients' risks and for public health measures are needed to limit exposure and subsequent deleterious effects. The purpose of this paper is to explore the autoimmune triggering mechanisms and present the current literature supporting the role of BPA in the pathogenesis of autoimmune diseases.
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Affiliation(s)
- Kassem Sharif
- Sackler Faculty of Medicine, Tel-Aviv University, Tel-Aviv. Israel
| | - Adam Kurnick
- Sackler Faculty of Medicine, Tel-Aviv University, Tel-Aviv. Israel
| | - Louis Coplan
- Sackler Faculty of Medicine, Tel-Aviv University, Tel-Aviv. Israel
| | | | - Abdulla Watad
- Sackler Faculty of Medicine, Tel-Aviv University, Tel-Aviv. Israel
| | - Howard Amital
- Sackler Faculty of Medicine, Tel-Aviv University, Tel-Aviv. Israel
| | - Yehuda Shoenfeld
- Sackler Faculty of Medicine, Tel-Aviv University, Tel-Aviv. Israel
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23
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Yadav A, Tandon A, Seth B, Goyal S, Singh SJ, Tiwari SK, Agarwal S, Nair S, Chaturvedi RK. Cypermethrin Impairs Hippocampal Neurogenesis and Cognitive Functions by Altering Neural Fate Decisions in the Rat Brain. Mol Neurobiol 2021; 58:263-280. [PMID: 32920670 DOI: 10.1007/s12035-020-02108-9] [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: 02/07/2020] [Accepted: 08/28/2020] [Indexed: 12/31/2022]
Abstract
Neurogenesis is a developmental process that involves fine-tuned coordination between self-renewal, proliferation, and differentiation of neural stem cells (NSCs) into neurons. However, early-life assault with environmental toxicants interferes with the regular function of genes, proteins, and other molecules that build brain architecture resulting in attenuated neurogenesis. Cypermethrin is a class II synthetic pyrethroid pesticide extensively used in agriculture, veterinary, and residential applications due to its low mammalian toxicity, high bio-efficacy, and enhanced stability. Despite reports on cypermethrin-mediated behavioral and biochemical alterations, till now, no study implicates whether cypermethrin exposure has any effect on neurogenesis. Therefore, the present study was undertaken to comprehend the effects of cypermethrin treatment on embryonic and adult neurogenesis. We found that cypermethrin exposure led to a considerable decrease in the BrdU/Sox-2+, BrdU/Dcx+, and BrdU/NeuN+ co-labeled cells indicating that cypermethrin treatment decreases NSC proliferation and generation of mature and functional neurons. On the contrary, the generation of BrdU/S100β+ glial cells was increased resulting in neurogliogenesis imbalance in the hippocampus. Further, cypermethrin treatment also led to an increased number of BrdU/cleaved caspase-3+ and Fluoro-Jade B+ cells suggesting an induction of apoptosis in NSCs and increased degeneration of neurons in the hippocampus. Overall, these results explicate that cypermethrin exposure not only reduces the NSC pool but also disturbs the neuron-astrocyte ratio and potentiates neurodegeneration in the hippocampus, leading to cognitive dysfunctions in rats.
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Affiliation(s)
- Anuradha Yadav
- Developmental Toxicology Laboratory, Systems Toxicology and Health Risk Assessment Group, CSIR-Indian Institute of Toxicology Research (CSIR-IITR), Vishvigyan Bhavan, 31 Mahatma Gandhi Marg, Lucknow, Uttar Pradesh, 226001, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Ankit Tandon
- Developmental Toxicology Laboratory, Systems Toxicology and Health Risk Assessment Group, CSIR-Indian Institute of Toxicology Research (CSIR-IITR), Vishvigyan Bhavan, 31 Mahatma Gandhi Marg, Lucknow, Uttar Pradesh, 226001, India
- Department of Biochemistry, School of Dental Sciences, Babu Banarasi Das University, BBD City, Faizabad Road, Lucknow, Uttar Pradesh, 226028, India
| | - Brashket Seth
- Developmental Toxicology Laboratory, Systems Toxicology and Health Risk Assessment Group, CSIR-Indian Institute of Toxicology Research (CSIR-IITR), Vishvigyan Bhavan, 31 Mahatma Gandhi Marg, Lucknow, Uttar Pradesh, 226001, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Shweta Goyal
- Developmental Toxicology Laboratory, Systems Toxicology and Health Risk Assessment Group, CSIR-Indian Institute of Toxicology Research (CSIR-IITR), Vishvigyan Bhavan, 31 Mahatma Gandhi Marg, Lucknow, Uttar Pradesh, 226001, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Sangh Jyoti Singh
- Developmental Toxicology Laboratory, Systems Toxicology and Health Risk Assessment Group, CSIR-Indian Institute of Toxicology Research (CSIR-IITR), Vishvigyan Bhavan, 31 Mahatma Gandhi Marg, Lucknow, Uttar Pradesh, 226001, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Shashi Kant Tiwari
- Developmental Toxicology Laboratory, Systems Toxicology and Health Risk Assessment Group, CSIR-Indian Institute of Toxicology Research (CSIR-IITR), Vishvigyan Bhavan, 31 Mahatma Gandhi Marg, Lucknow, Uttar Pradesh, 226001, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
- University of California San Diego, La Jolla, CA, 92093, USA
| | - Swati Agarwal
- Developmental Toxicology Laboratory, Systems Toxicology and Health Risk Assessment Group, CSIR-Indian Institute of Toxicology Research (CSIR-IITR), Vishvigyan Bhavan, 31 Mahatma Gandhi Marg, Lucknow, Uttar Pradesh, 226001, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
- Johns Hopkins University School of Medicine, Baltimore, MD, 21205, USA
| | - Saumya Nair
- Developmental Toxicology Laboratory, Systems Toxicology and Health Risk Assessment Group, CSIR-Indian Institute of Toxicology Research (CSIR-IITR), Vishvigyan Bhavan, 31 Mahatma Gandhi Marg, Lucknow, Uttar Pradesh, 226001, India
| | - Rajnish Kumar Chaturvedi
- Developmental Toxicology Laboratory, Systems Toxicology and Health Risk Assessment Group, CSIR-Indian Institute of Toxicology Research (CSIR-IITR), Vishvigyan Bhavan, 31 Mahatma Gandhi Marg, Lucknow, Uttar Pradesh, 226001, India.
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India.
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24
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Naffaa V, Laprévote O, Schang AL. Effects of endocrine disrupting chemicals on myelin development and diseases. Neurotoxicology 2020; 83:51-68. [PMID: 33352275 DOI: 10.1016/j.neuro.2020.12.009] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2020] [Revised: 12/10/2020] [Accepted: 12/16/2020] [Indexed: 12/14/2022]
Abstract
In the central and peripheral nervous systems, myelin is essential for efficient conduction of action potentials. During development, oligodendrocytes and Schwann cells differentiate and ensure axon myelination, and disruption of these processes can contribute to neurodevelopmental disorders. In adults, demyelination can lead to important disabilities, and recovery capacities by remyelination often decrease with disease progression. Among environmental chemical pollutants, endocrine disrupting chemicals (EDCs) are of major concern for human health and are notably suspected to participate in neurodevelopmental and neurodegenerative diseases. In this review, we have combined the current knowledge on EDCs impacts on myelin including several persistent organic pollutants, bisphenol A, triclosan, heavy metals, pesticides, and nicotine. Besides, we presented several other endocrine modulators, including pharmaceuticals and the phytoestrogen genistein, some of which are candidates for treating demyelinating conditions but could also be deleterious as contaminants. The direct impacts of EDCs on myelinating cells were considered as well as their indirect consequences on myelin, particularly on immune mechanisms associated with demyelinating conditions. More studies are needed to describe the effects of these compounds and to further understand the underlying mechanisms in relation to the potential for endocrine disruption.
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Affiliation(s)
- Vanessa Naffaa
- Université de Paris, UMR 8038 (CiTCoM), CNRS, Faculté de Pharmacie de Paris, 4 avenue de l'Observatoire, 75006 Paris, France.
| | - Olivier Laprévote
- Université de Paris, UMR 8038 (CiTCoM), CNRS, Faculté de Pharmacie de Paris, 4 avenue de l'Observatoire, 75006 Paris, France; Hôpital Européen Georges Pompidou, AP-HP, Service de Biochimie, 20 rue Leblanc, 75015 Paris, France.
| | - Anne-Laure Schang
- Université de Paris, UMR 1153 (CRESS), Faculté de Pharmacie de Paris, 4 avenue de l'Observatoire, 75006 Paris, France.
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25
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Giannocco G, Kizys MML, Maciel RM, de Souza JS. Thyroid hormone, gene expression, and Central Nervous System: Where we are. Semin Cell Dev Biol 2020; 114:47-56. [PMID: 32980238 DOI: 10.1016/j.semcdb.2020.09.007] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2020] [Revised: 09/09/2020] [Accepted: 09/14/2020] [Indexed: 12/27/2022]
Abstract
Thyroid hormones (TH; T3 and T4) play a fundamental role in the fetal stage to the adult phase, controlling gene and protein expression in virtually all tissues. The endocrine and CNS systems have relevant interaction, and the TH are pivotal for the proper functioning of the CNS. A slight failure to regulate TH availability during pregnancy and/or childhood can lead to neurological disorders, for example, autism and cognitive impairment, or depression. In this review, we highlight how TH acts in controlling gene expression, its role in the CNS, and what substances widely found in the environment can cause in this tissue. We highlight the role of Endocrine Disruptors used on an everyday basis in the processing of mRNAs responsible for neurodevelopment. We conclude that TH, more precisely T3, acts mainly throughout its nuclear receptors, that the deficiency of this hormone, either due to the lack of its main substrate iodine, or by to incorrect organification of T4 and T3 in the gland, or by a mutation in transporters, receptors and deiodinases may cause mild (dysregulated mood in adulthood) to severe neurological impairment (Allan-Herndon-Dudley syndrome, presented as early as childhood); T3 is responsible for the expression of numerous CNS genes related to oxygen transport, growth factors, myelination, cell maturation. Substances present in the environment and widely used can interfere with the functioning of the thyroid gland, the action of TH, and the functioning of the CNS.
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Affiliation(s)
- Gisele Giannocco
- Departamento de Medicina, Laboratório de Endocrinologia e Medicina Translacional, Universidade Federal de São Paulo, UNIFESP/EPM, Rua Pedro de Toledo, 669 - 11 andar, São Paulo, SP 04039-032, Brazil; Departamento de Ciências Biológicas, Universidade Federal de São Paulo, UNIFESP, Diadema, SP 09920-000, Brazil
| | - Marina Malta Letro Kizys
- Departamento de Medicina, Laboratório de Endocrinologia e Medicina Translacional, Universidade Federal de São Paulo, UNIFESP/EPM, Rua Pedro de Toledo, 669 - 11 andar, São Paulo, SP 04039-032, Brazil
| | - Rui Monteiro Maciel
- Departamento de Medicina, Laboratório de Endocrinologia e Medicina Translacional, Universidade Federal de São Paulo, UNIFESP/EPM, Rua Pedro de Toledo, 669 - 11 andar, São Paulo, SP 04039-032, Brazil
| | - Janaina Sena de Souza
- Departamento de Medicina, Laboratório de Endocrinologia e Medicina Translacional, Universidade Federal de São Paulo, UNIFESP/EPM, Rua Pedro de Toledo, 669 - 11 andar, São Paulo, SP 04039-032, Brazil; Department of Pediatrics, School of Medicine, University of California, San Diego, La Jolla, CA 92093, USA.
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26
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Wu T, Xu W, Chen H, Li S, Dou R, Shen H, Liu X, Liu X, Hong Y, He J. Comparison of the differentiation of dental pulp stem cells and periodontal ligament stem cells into neuron-like cells and their effects on focal cerebral ischemia. Acta Biochim Biophys Sin (Shanghai) 2020; 52:1016-1029. [PMID: 32845287 DOI: 10.1093/abbs/gmaa082] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2020] [Revised: 06/22/2020] [Accepted: 06/23/2020] [Indexed: 12/22/2022] Open
Abstract
Recent studies have reported an increasing incidence of ischemic stroke, particularly in younger age groups. Dental pulp stem cells (DPSCs) and periodontal ligament stem cells (PDLSCs) are the most common stem cells acquired from the teeth of adults, even elderly people. However, there are no detailed reports on whether DPSCs or PDLSCs are suitable for the treatment of ischemic stroke. In this study, the in vitro differentiation of DPSCs and PDLSCs into neuron-like cells was evaluated. Then, we established a rat model of cerebral ischemia. DPSCs or PDLSCs were administered to animals, and the therapeutic effects of these two types of cells were investigated. The results showed that PDLSCs had a higher differentiation rate than DPSCs. Immunofluorescence studies showed that the expression of the neuronal differentiation marker Thy-1 was higher in PDLSCs than in DPSCs, and other gene markers of neuronal differentiation showed corresponding trends, which were confirmed by western blot analysis. In this process, the Notch and Wnt signaling pathways were inhibited and activated, respectively. Finally, rats with transient occlusion of the right middle cerebral artery were used as a model to assess the therapeutic effect of PDLSCs and DPSCs on ischemia. The results showed that rats in the PDLSC-treated group emitted significantly greater red fluorescence signal than the DPSC-treated group. PDLSC transplantation promoted the recovery of neurological function more effectively than DPSC transplantation. Hence, PDLSCs represent an autogenous source of adult mesenchymal stem cells with desirable biological properties and may be an ideal candidate for clinical applications.
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Affiliation(s)
- Tingting Wu
- Stomatologic Hospital & College, Anhui Medical University, Key Laboratory of Oral Diseases Research of Anhui Province, Hefei 230001, China
| | - Wanting Xu
- Stomatologic Hospital & College, Anhui Medical University, Key Laboratory of Oral Diseases Research of Anhui Province, Hefei 230001, China
| | - Hanlin Chen
- Stomatologic Hospital & College, Anhui Medical University, Key Laboratory of Oral Diseases Research of Anhui Province, Hefei 230001, China
| | - Shasha Li
- Stomatologic Hospital & College, Anhui Medical University, Key Laboratory of Oral Diseases Research of Anhui Province, Hefei 230001, China
| | - Rengang Dou
- Department of Rehabilitation Medicine, Second Affiliated Hospital of Anhui Medical University, Hefei 230061, China
| | - Hongtao Shen
- Department of Rehabilitation Medicine, Second Affiliated Hospital of Anhui Medical University, Hefei 230061, China
| | - Xue Liu
- Department of Rehabilitation Medicine, Second Affiliated Hospital of Anhui Medical University, Hefei 230061, China
| | - Xiaoyu Liu
- Stomatologic Hospital & College, Anhui Medical University, Key Laboratory of Oral Diseases Research of Anhui Province, Hefei 230001, China
| | - Yongfeng Hong
- Department of Rehabilitation Medicine, Second Affiliated Hospital of Anhui Medical University, Hefei 230061, China
| | - Jiacai He
- Stomatologic Hospital & College, Anhui Medical University, Key Laboratory of Oral Diseases Research of Anhui Province, Hefei 230001, China
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Solleiro‐Villavicencio H, Gomez‐De León CT, Del Río‐Araiza VH, Morales‐Montor J. The detrimental effect of microplastics on critical periods of development in the neuroendocrine system. Birth Defects Res 2020; 112:1326-1340. [DOI: 10.1002/bdr2.1776] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2020] [Accepted: 07/10/2020] [Indexed: 01/13/2023]
Affiliation(s)
| | - Carmen T. Gomez‐De León
- Departamento de Inmunologia Instituto de Investigaciones Biomedicas, Universidad Nacional Autonoma de Mexico Ciudad de México Mexico
| | - Víctor H. Del Río‐Araiza
- Departamento de Parasitología, Facultad de Medicina Veterinaria y Zootecnia Universidad Nacional Autónoma de México Ciudad de México Mexico
| | - Jorge Morales‐Montor
- Departamento de Inmunologia Instituto de Investigaciones Biomedicas, Universidad Nacional Autonoma de Mexico Ciudad de México Mexico
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Tandon A, Singh SJ, Gupta M, Singh N, Shankar J, Arjaria N, Goyal S, Chaturvedi RK. Notch pathway up-regulation via curcumin mitigates bisphenol-A (BPA) induced alterations in hippocampal oligodendrogenesis. JOURNAL OF HAZARDOUS MATERIALS 2020; 392:122052. [PMID: 32151947 DOI: 10.1016/j.jhazmat.2020.122052] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/17/2019] [Revised: 01/06/2020] [Accepted: 01/07/2020] [Indexed: 05/02/2023]
Abstract
CNS myelination process involves proliferation and differentiation of oligodendrocyte progenitor cells (OPCs). Defective myelination causes onset of neurological disorders. Bisphenol-A (BPA), a component of plastic items, exerts adverse effects on human health. Our previous studies indicated that BPA impairs neurogenesis and myelination process stimulating cognitive dysfunctions. But, the underlying mechanism(s) of BPA induced de-myelination and probable neuroprotection by curcumin remains elusive. We found that curcumin protected BPA mediated adverse effects on oligosphere growth kinetics. Curcumin significantly improved proliferation and differentiation of OPCs upon BPA exposure both in-vitro and in-vivo. Curcumin enhanced the mRNA expression and protein levels of myelination markers in BPA treated rat hippocampus. Curcumin improved myelination potential via increasing β-III tubulin-/MBP+ cells (neuron-oligodendrocyte co-culture) and augmented fluoromyelin intensity and neurofilament/MBP+ neurons in vivo. In silico docking studies suggested Notch pathway genes (Notch-1, Hes-1 and Mib-1) as potential targets of BPA and curcumin. Curcumin reversed BPA mediated myelination inhibition via increasing the Notch pathway gene expression. Genetic and pharmacological Notch pathway inhibition by DAPT and Notch-1 siRNA exhibited decreased curcumin mediated neuroprotection. Curcumin improved BPA mediated myelin sheath degeneration and neurobehavioral impairments. Altogether, results suggest that curcumin protected BPA induced de-myelination and behavioural deficits through Notch pathway activation.
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Affiliation(s)
- Ankit Tandon
- Developmental Toxicology Laboratory, Systems Toxicology and Health Risk Assessment Group, CSIR-Indian Institute of Toxicology Research (CSIR-IITR), Vishvigyan Bhavan, 31, Mahatma Gandhi Marg, Lucknow 226001, Uttar Pradesh (U.P.), India; Department of Biochemistry, School of Dental Sciences, Babu Banarasi Das University, BBD City, Faizabad Road, Lucknow 226 028, U.P., India
| | - Sangh Jyoti Singh
- Developmental Toxicology Laboratory, Systems Toxicology and Health Risk Assessment Group, CSIR-Indian Institute of Toxicology Research (CSIR-IITR), Vishvigyan Bhavan, 31, Mahatma Gandhi Marg, Lucknow 226001, Uttar Pradesh (U.P.), India; Academy of Scientific and Innovative Research (AcSIR), CSIR-IITR Lucknow Campus, Lucknow, India
| | - Manjeet Gupta
- Developmental Toxicology Laboratory, Systems Toxicology and Health Risk Assessment Group, CSIR-Indian Institute of Toxicology Research (CSIR-IITR), Vishvigyan Bhavan, 31, Mahatma Gandhi Marg, Lucknow 226001, Uttar Pradesh (U.P.), India
| | - Nivedita Singh
- Department of Biochemistry, School of Dental Sciences, Babu Banarasi Das University, BBD City, Faizabad Road, Lucknow 226 028, U.P., India
| | - Jai Shankar
- Advanced Imaging Facility, CSIR-IITR, Lucknow, India
| | - Nidhi Arjaria
- Advanced Imaging Facility, CSIR-IITR, Lucknow, India
| | - Shweta Goyal
- Developmental Toxicology Laboratory, Systems Toxicology and Health Risk Assessment Group, CSIR-Indian Institute of Toxicology Research (CSIR-IITR), Vishvigyan Bhavan, 31, Mahatma Gandhi Marg, Lucknow 226001, Uttar Pradesh (U.P.), India; Academy of Scientific and Innovative Research (AcSIR), CSIR-IITR Lucknow Campus, Lucknow, India
| | - Rajnish Kumar Chaturvedi
- Developmental Toxicology Laboratory, Systems Toxicology and Health Risk Assessment Group, CSIR-Indian Institute of Toxicology Research (CSIR-IITR), Vishvigyan Bhavan, 31, Mahatma Gandhi Marg, Lucknow 226001, Uttar Pradesh (U.P.), India.
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Grohs MN, Reynolds JE, Liu J, Martin JW, Pollock T, Lebel C, Dewey D. Prenatal maternal and childhood bisphenol a exposure and brain structure and behavior of young children. Environ Health 2019; 18:85. [PMID: 31615514 PMCID: PMC6794724 DOI: 10.1186/s12940-019-0528-9] [Citation(s) in RCA: 43] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2019] [Accepted: 09/25/2019] [Indexed: 05/18/2023]
Abstract
BACKGROUND Bisphenol A (BPA) is commonly used in the manufacture of plastics and epoxy resins. In North America, over 90% of the population has detectable levels of urinary BPA. Human epidemiological studies have reported adverse behavioral outcomes with BPA exposure in children, however, corresponding effects on children's brain structure have not yet been investigated. The current study examined the association between prenatal maternal and childhood BPA exposure and white matter microstructure in children aged 2 to 5 years, and investigated whether brain structure mediated the association between BPA exposure and child behavior. METHODS Participants were 98 mother-child pairs who were recruited between January 2009 and December 2012. Total BPA concentrations in spot urine samples obtained from mothers in the second trimester of pregnancy and from children at 3-4 years of age were analyzed. Children participated in a diffusion magnetic resonance imaging (MRI) scan at age 2-5 years (3.7 ± 0.8 years). Associations between prenatal maternal and childhood BPA and children's fractional anisotropy and mean diffusivity of 10 isolated white matter tracts were investigated, controlling for urinary creatinine, child sex, and age at the time of MRI. Post-hoc analyses examined if alterations in white matter mediated the relationship of BPA and children's scores on the Child Behavior Checklist (CBCL). RESULTS Prenatal maternal urinary BPA was significantly associated with child mean diffusivity in the splenium and right inferior longitudinal fasciculus. Splenium diffusivity mediated the relationship between maternal prenatal BPA levels and children's internalizing behavior (indirect effect: β = 0.213, CI [0.0167, 0.564]). No significant associations were found between childhood BPA and white matter microstructure. CONCLUSIONS This study provides preliminary evidence for the neural correlates of BPA exposure in humans. Our findings suggest that prenatal maternal exposure to BPA may lead to alterations in white matter microstructure in preschool aged children, and that such alterations mediate the relationship between early life exposure to BPA and internalizing problems.
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Affiliation(s)
- Melody N Grohs
- Department of Neuroscience, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
- Owerko Centre, Alberta Children's Hospital Research Institute, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Jess E Reynolds
- Owerko Centre, Alberta Children's Hospital Research Institute, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
- Department of Radiology, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Jiaying Liu
- Department of Laboratory Medicine and Pathology, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, Alberta, Canada
| | - Jonathan W Martin
- Department of Laboratory Medicine and Pathology, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, Alberta, Canada
- Science for Life Laboratory, Department of Environmental Science and Analytical Chemistry, Stockholm University, Stockholm, Sweden
| | - Tyler Pollock
- Owerko Centre, Alberta Children's Hospital Research Institute, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
- Department of Radiology, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
- Department of Medical Genetics, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Catherine Lebel
- Owerko Centre, Alberta Children's Hospital Research Institute, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
- Department of Radiology, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
- Hotchkiss Brain Institute, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Deborah Dewey
- Owerko Centre, Alberta Children's Hospital Research Institute, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada.
- Hotchkiss Brain Institute, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada.
- Department of Paediatrics, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada.
- Department of Community Health Sciences, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada.
- University of Calgary, #397 Owerko Center, Child Development Centre 2500 University Dr. NW, Calgary, Alberta, T2N 1N4, Canada.
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Kumar M, Mahajan A, Sapehia D, Kaur J, Sandhir R. Effects of altered maternal folate and vitamin B 12 on neurobehavioral outcomes in F1 male mice. Brain Res Bull 2019; 153:93-101. [PMID: 31377444 DOI: 10.1016/j.brainresbull.2019.07.031] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2019] [Revised: 07/19/2019] [Accepted: 07/30/2019] [Indexed: 10/26/2022]
Abstract
Maternal folate and vitamin B12 status during pregnancy may influence development of central nervous system (CNS) in the offspring. Very little attention has been paid to understand the combined effects of both the vitamins during pregnancy. The present study was designed to evaluate the biochemical and behavioral outcomes following alterations in folate and vitamin B12 levels in C57BL/6 mice. The female mice were fed with different combinations of folate and vitamin B12 whereas; males were fed with normal diet for 4 weeks. The mice were mated and the pregnant mice received the same diets as before pregnancy. The F1 male mice were further continued on maternal diet for 6 weeks following neurobehavioral and biochemical assessment. The body weight of the F1 male mice was significantly decreased in the mice that received folate and vitamin B12 deficient diet. Altered cognitive functions were observed in the folate and B12 deficient F1 male mice as assessed by Morris water maze and novel object recognition tests. Spontaneous locomotor activity was decreased in F1 male mice fed with folate and B12 deficient diets. Elevated homocysteine levels and decreased hydrogen sulfide levels were also observed in the brain of F1 male mice on folate and B12 deficient diets. However, GSH and GSSG levels were increased in the brain of the animals supplemented with folate deficient diet with different combinations of B12. The study suggests that exposure of female mice to folate and vitamin B12 deficiency during pregnancy effects in-utero development of fetus, which further leads to behavioral anomalies in adult life and is sufficient to cause impaired cognitive behavior in the subsequent generation. Thus, elucidating the role and importance of maternal dietary folate and B12 ratio during pregnancy.
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Affiliation(s)
- Mohit Kumar
- Department of Biochemistry, Basic Medical Science Block-II, Panjab University, Chandigarh, 160014, India
| | - Aatish Mahajan
- Department of Biochemistry, Postgraduate Institute of Medical Education and Research, Chandigarh, 160012, India
| | - Divika Sapehia
- Department of Biochemistry, Postgraduate Institute of Medical Education and Research, Chandigarh, 160012, India
| | - Jyotdeep Kaur
- Department of Biochemistry, Postgraduate Institute of Medical Education and Research, Chandigarh, 160012, India
| | - Rajat Sandhir
- Department of Biochemistry, Basic Medical Science Block-II, Panjab University, Chandigarh, 160014, India.
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Carbofuran hampers oligodendrocytes development leading to impaired myelination in the hippocampus of rat brain. Neurotoxicology 2019; 70:161-179. [DOI: 10.1016/j.neuro.2018.11.007] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2018] [Revised: 11/14/2018] [Accepted: 11/20/2018] [Indexed: 11/21/2022]
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Yu X, Cheng G, Zhang L, Zhang Y, Wang Q, Zhao M, Zeng L, Hu Y, Feng L. N-Phenylquinazolin-2-amine Yhhu4952 as a novel promotor for oligodendrocyte differentiation and myelination. Sci Rep 2018; 8:14040. [PMID: 30232349 PMCID: PMC6145871 DOI: 10.1038/s41598-018-32326-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2017] [Accepted: 04/23/2018] [Indexed: 11/19/2022] Open
Abstract
Oligodendrocytes are a type of glial cells that ensheath multiple neuronal axons and form myelin. Under pathological conditions, such as multiple sclerosis (MS), inflammatory damage to myelin and oligodendrocytes leads to demyelination. Although the demyelinated regions can partially resolve functional deficits through remyelination, however, as the disease progresses, remyelination typically becomes incomplete and ultimately fails. One possible explanation for this failure is the activation of the Notch pathway in MS lesions, which impedes oligodendrocyte precursor cells (OPCs) at maturation. This leads to a potential target for remyelination. Here, we have identified a compound Yhhu4952 that promoted the maturation of cultured OPCs in a dose-dependent and time-dependent manner. Neonatal rats showed a significant increase in the expression of myelin basic protein (MBP) and the prevalence of mature oligodendrocytes in the corpus callosum after Yhhu4952 treatment. The compound was also effective in promoting remyelination in cuprizone-induced demyelination model and improving severity scores in experimental autoimmune encephalomyelitis (EAE) model. Mechanism studies revealed that Yhhu4952 promotes OPC differentiation through the inhibition of the Jagged1-Notch1 pathway. These findings suggest Yhhu4952 is potentially useful for proceeding oligodendrocyte differentiation and remyelination.
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Affiliation(s)
- Xueli Yu
- CAS Key Laboratory of Receptor Research and Department of Neuropharmacology,Shanghai Institute of Materia Medica, 555 Zu Chongzhi Road, Shanghai, 201203, China
- University of Chinese Academy of Sciences, No.19A Yuquan Road, Beijing, 100049, China
| | - Gang Cheng
- College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, 310058, China
| | - Lei Zhang
- CAS Key Laboratory of Receptor Research and Department of Neuropharmacology,Shanghai Institute of Materia Medica, 555 Zu Chongzhi Road, Shanghai, 201203, China
- University of Chinese Academy of Sciences, No.19A Yuquan Road, Beijing, 100049, China
| | - Yu Zhang
- CAS Key Laboratory of Receptor Research and Department of Neuropharmacology,Shanghai Institute of Materia Medica, 555 Zu Chongzhi Road, Shanghai, 201203, China
- University of Chinese Academy of Sciences, No.19A Yuquan Road, Beijing, 100049, China
| | - Qing Wang
- CAS Key Laboratory of Receptor Research and Department of Neuropharmacology,Shanghai Institute of Materia Medica, 555 Zu Chongzhi Road, Shanghai, 201203, China
- University of Chinese Academy of Sciences, No.19A Yuquan Road, Beijing, 100049, China
| | - Mengxue Zhao
- CAS Key Laboratory of Receptor Research and Department of Neuropharmacology,Shanghai Institute of Materia Medica, 555 Zu Chongzhi Road, Shanghai, 201203, China
- University of Chinese Academy of Sciences, No.19A Yuquan Road, Beijing, 100049, China
| | - Limin Zeng
- CAS Key Laboratory of Receptor Research and Department of Neuropharmacology,Shanghai Institute of Materia Medica, 555 Zu Chongzhi Road, Shanghai, 201203, China
- University of Chinese Academy of Sciences, No.19A Yuquan Road, Beijing, 100049, China
| | - Youhong Hu
- College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, 310058, China.
| | - Linyin Feng
- CAS Key Laboratory of Receptor Research and Department of Neuropharmacology,Shanghai Institute of Materia Medica, 555 Zu Chongzhi Road, Shanghai, 201203, China.
- University of Chinese Academy of Sciences, No.19A Yuquan Road, Beijing, 100049, China.
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Stem Cells as Potential Targets of Polyphenols in Multiple Sclerosis and Alzheimer's Disease. BIOMED RESEARCH INTERNATIONAL 2018; 2018:1483791. [PMID: 30112360 PMCID: PMC6077677 DOI: 10.1155/2018/1483791] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/09/2018] [Accepted: 06/19/2018] [Indexed: 12/16/2022]
Abstract
Alzheimer's disease (AD) and multiple sclerosis are major neurodegenerative diseases, which are characterized by the accumulation of abnormal pathogenic proteins due to oxidative stress, mitochondrial dysfunction, impaired autophagy, and pathogens, leading to neurodegeneration and behavioral deficits. Herein, we reviewed the utility of plant polyphenols in regulating proliferation and differentiation of stem cells for inducing brain self-repair in AD and multiple sclerosis. Firstly, we discussed the genetic, physiological, and environmental factors involved in the pathophysiology of both the disorders. Next, we reviewed various stem cell therapies available and how they have proved useful in animal models of AD and multiple sclerosis. Lastly, we discussed how polyphenols utilize the potential of stem cells, either complementing their therapeutic effects or stimulating endogenous and exogenous neurogenesis, against these diseases. We suggest that polyphenols could be a potential candidate for stem cell therapy against neurodegenerative disorders.
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Xin F, Fischer E, Krapp C, Krizman EN, Lan Y, Mesaros C, Snyder NW, Bansal A, Robinson MB, Simmons RA, Bartolomei MS. Mice exposed to bisphenol A exhibit depressive-like behavior with neurotransmitter and neuroactive steroid dysfunction. Horm Behav 2018; 102:93-104. [PMID: 29763587 PMCID: PMC6261494 DOI: 10.1016/j.yhbeh.2018.05.010] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/13/2018] [Revised: 05/07/2018] [Accepted: 05/11/2018] [Indexed: 11/28/2022]
Abstract
Fetal exposure to endocrine disrupting chemicals (EDCs) has been associated with adverse neurobehavioral outcomes across the lifespan and can persist across multiple generations of offspring. However, the underlying mechanisms driving these changes are not well understood. We investigated the molecular perturbations associated with EDC-induced behavioral changes in first (F1) and second (F2) filial generations, using the model EDC bisphenol A (BPA). C57BL/6J dams were exposed to BPA from preconception until lactation through the diet at doses (10 μg/kg bw/d-lower dose or 10 mg/kg bw/d-upper dose) representative of human exposure levels. As adults, F1 male offspring exhibited increased depressive-like behavior, measured by the forced swim test, while females were unaffected. These behavioral changes were limited to the F1 generation and were not associated with altered maternal care. Transcriptome analysis by RNA-sequencing in F1 control and upper dose BPA-exposed adult male hippocampus revealed neurotransmitter systems as major pathways disrupted by developmental BPA exposure. High performance liquid chromatography demonstrated a male-specific reduction in hippocampal serotonin. Administration of the selective serotonin reuptake inhibitor fluoxetine (20 mg/kg bw) rescued the depressive-like phenotype in males exposed to lower, but not upper, dose BPA, suggesting distinct mechanisms of action for each exposure dose. Finally, high resolution mass spectrometry revealed reduced circulating levels of the neuroactive steroid dehydroepiandrosterone in BPA-exposed males, suggesting another potential mechanism underlying the depressive-like phenotype. Thus, behavioral changes associated with early life BPA exposure may be mediated by sex-specific disruptions in the serotonergic system and/or sex steroid biogenesis in male offspring.
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Affiliation(s)
- Frances Xin
- Epigenetics Institute, Department of Cell and Developmental Biology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA; Center for Excellence in Environmental Toxicology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Erin Fischer
- Epigenetics Institute, Department of Cell and Developmental Biology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA; Center for Excellence in Environmental Toxicology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Christopher Krapp
- Epigenetics Institute, Department of Cell and Developmental Biology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Elizabeth N Krizman
- Department of Pediatrics, Children's Hospital of Philadelphia, University of Pennsylvania, Philadelphia, PA 19104, USA; Department of Systems Pharmacology and Translational Therapeutics, Children's Hospital of Philadelphia, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Yemin Lan
- Epigenetics Institute, Department of Cell and Developmental Biology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Clementina Mesaros
- Center for Excellence in Environmental Toxicology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA; Center for Cancer Pharmacology, Department of Pharmacology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Nathaniel W Snyder
- A.J. Drexel Autism Institute, Drexel University, Philadelphia, PA 19104, USA
| | - Amita Bansal
- Center for Excellence in Environmental Toxicology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA; Division of Neonatology, Children's Hospital of Philadelphia, University of Pennsylvania, Philadelphia, PA 19104, USA; Center for Research on Reproduction and Women's Health, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Michael B Robinson
- Department of Pediatrics, Children's Hospital of Philadelphia, University of Pennsylvania, Philadelphia, PA 19104, USA; Department of Systems Pharmacology and Translational Therapeutics, Children's Hospital of Philadelphia, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Rebecca A Simmons
- Center for Excellence in Environmental Toxicology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA; Division of Neonatology, Children's Hospital of Philadelphia, University of Pennsylvania, Philadelphia, PA 19104, USA; Center for Research on Reproduction and Women's Health, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Marisa S Bartolomei
- Epigenetics Institute, Department of Cell and Developmental Biology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA; Center for Excellence in Environmental Toxicology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA.
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Nesan D, Sewell LC, Kurrasch DM. Opening the black box of endocrine disruption of brain development: Lessons from the characterization of Bisphenol A. Horm Behav 2018; 101:50-58. [PMID: 29241697 DOI: 10.1016/j.yhbeh.2017.12.001] [Citation(s) in RCA: 51] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/01/2017] [Revised: 12/04/2017] [Accepted: 12/06/2017] [Indexed: 01/14/2023]
Abstract
Bisphenol A (BPA) is among the best-studied endocrine disrupting chemicals, known to act via multiple steroid hormone receptors to mediate a myriad of cellular effects. Pre-, peri-, and postnatal BPA exposure have been linked to a variety of altered behaviors in multiple model organisms, ranging from zebrafish to frogs to mammalian models. Given that BPA can cross the human placental barrier and has been found in the serum of human fetuses during gestation, BPA has been postulated to adversely affect ongoing neurodevelopment, ultimately leading to behavioral disorders later in life. Indeed, the brain has been identified as a key developmental target for BPA disruption. Despite these known associations between gestational BPA exposure and adverse developmental outcomes, as well as an extensive body of evidence existing in the literature, the mechanisms by which BPA induces its cellular- and tissue-specific effects on neurodevelopmental processes still remains poorly understood at a mechanistic level. In this review we will briefly summarize the effects of gestational BPA exposure on neural developmental mechanisms and resulting behaviors, and then present suggestions for how we might address gaps in our knowledge to develop a fuller understanding of endocrine neurodevelopmental disruption to better inform governmental policy against the use of BPA or other endocrine disruptors.
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Affiliation(s)
- Dinushan Nesan
- Department of Medical Genetics, University of Calgary, Calgary, AB, Canada; Alberta Children's Hospital Research Institute, University of Calgary, Calgary, AB, Canada; Hotckhiss Brain Institute, University of Calgary, Calgary, AB, Canada
| | - Laronna C Sewell
- Department of Medical Genetics, University of Calgary, Calgary, AB, Canada; Alberta Children's Hospital Research Institute, University of Calgary, Calgary, AB, Canada; Hotckhiss Brain Institute, University of Calgary, Calgary, AB, Canada
| | - Deborah M Kurrasch
- Department of Medical Genetics, University of Calgary, Calgary, AB, Canada; Alberta Children's Hospital Research Institute, University of Calgary, Calgary, AB, Canada; Hotckhiss Brain Institute, University of Calgary, Calgary, AB, Canada.
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36
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Ahmed RG, Walaa GH, Asmaa FS. Suppressive effects of neonatal bisphenol A on the neuroendocrine system. Toxicol Ind Health 2018; 34:397-407. [DOI: 10.1177/0748233718757082] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
The aim of this study was to assess the effects of neonatal bisphenol A (BPA) administration on neuroendocrine features (the thyroid–brain axis). BPA (20 or 40 µg/kg) was orally administered to juvenile male albino rats ( Rattus norvegicus) from postnatal days (PNDs) 15 to 30. Both doses resulted in lower serum thyroxine (T4), triiodothyronine (T3), and growth hormone levels and higher thyrotropin level than the control levels at PND 30. In the neonatal cerebellum and cerebrum, vacuolation, pyknosis, edema, degenerative changes, and reductions in the size and number of the cells were observed in both treated groups. Alternatively, elevations in oxidative markers (lipid peroxidation, nitric oxide, and hydrogen peroxide [H2O2]) at both dose levels were recorded at PND 30, along with decreased activities of antioxidant markers (ascorbic acid, total thiol [t-SH], glutathione, glutathione peroxidase, glutathione reductase, glutathione-S-transferase, and catalase) with respect to control levels. Thus, the BPA-induced hypothyroid state may disturb the neonatal thyroid–brain axis via production of free radicals, and this could damage the plasma membrane and cellular components, delaying cerebrum and cerebellum development.
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Affiliation(s)
- RG Ahmed
- Anatomy and Embryology Division, Zoology Department, Faculty of Science, Beni-Suef University, Beni-Suef, Egypt
| | - GH Walaa
- Biochemistry Division, Chemistry Department, Faculty of Science, Beni-Suef University, Beni-Suef, Egypt
| | - FS Asmaa
- Biochemistry Division, Chemistry Department, Faculty of Science, Beni-Suef University, Beni-Suef, Egypt
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Bove RM. Why monkeys do not get multiple sclerosis (spontaneously): An evolutionary approach. EVOLUTION MEDICINE AND PUBLIC HEALTH 2018; 2018:43-59. [PMID: 29492266 PMCID: PMC5824939 DOI: 10.1093/emph/eoy002] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/28/2017] [Accepted: 11/07/2017] [Indexed: 12/20/2022]
Abstract
The goal of this review is to apply an evolutionary lens to understanding the origins of multiple sclerosis (MS), integrating three broad observations. First, only humans are known to develop MS spontaneously. Second, humans have evolved large brains, with characteristically large amounts of metabolically costly myelin. This myelin is generated over long periods of neurologic development—and peak MS onset coincides with the end of myelination. Third, over the past century there has been a disproportionate increase in the rate of MS in young women of childbearing age, paralleling increasing westernization and urbanization, indicating sexually specific susceptibility in response to changing exposures. From these three observations about MS, a life history approach leads us to hypothesize that MS arises in humans from disruption of the normal homeostatic mechanisms of myelin production and maintenance, during our uniquely long myelination period. This review will highlight under-explored areas of homeostasis in brain development, that are likely to shed new light on the origins of MS and to raise further questions about the interactions between our ancestral genes and modern environments.
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Affiliation(s)
- Riley M Bove
- Department of Neurology, UCSF, San Francisco, CA, USA
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38
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Murata M, Kang JH. Bisphenol A (BPA) and cell signaling pathways. Biotechnol Adv 2018; 36:311-327. [DOI: 10.1016/j.biotechadv.2017.12.002] [Citation(s) in RCA: 132] [Impact Index Per Article: 22.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2017] [Revised: 12/01/2017] [Accepted: 12/07/2017] [Indexed: 01/09/2023]
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Gothié JD, Demeneix B, Remaud S. Comparative approaches to understanding thyroid hormone regulation of neurogenesis. Mol Cell Endocrinol 2017; 459:104-115. [PMID: 28545819 DOI: 10.1016/j.mce.2017.05.020] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/02/2017] [Revised: 05/11/2017] [Accepted: 05/19/2017] [Indexed: 12/12/2022]
Abstract
Thyroid hormone (TH) signalling, an evolutionary conserved pathway, is crucial for brain function and cognition throughout life, from early development to ageing. In humans, TH deficiency during pregnancy alters offspring brain development, increasing the risk of cognitive disorders. How TH regulates neurogenesis and subsequent behaviour and cognitive functions remains a major research challenge. Cellular and molecular mechanisms underlying TH signalling on proliferation, survival, determination, migration, differentiation and maturation have been studied in mammalian animal models for over a century. However, recent data show that THs also influence embryonic and adult neurogenesis throughout vertebrates (from mammals to teleosts). These latest observations raise the question of how TH availability is controlled during neurogenesis and particularly in specific neural stem cell populations. This review deals with the role of TH in regulating neurogenesis in the developing and the adult brain across different vertebrate species. Such evo-devo approaches can shed new light on (i) the evolution of the nervous system and (ii) the evolutionary control of neurogenesis by TH across animal phyla. We also discuss the role of thyroid disruptors on brain development in an evolutionary context.
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Affiliation(s)
- Jean-David Gothié
- CNRS, UMR 7221, Muséum National d'Histoire Naturelle, F-75005 Paris France
| | - Barbara Demeneix
- CNRS, UMR 7221, Muséum National d'Histoire Naturelle, F-75005 Paris France.
| | - Sylvie Remaud
- CNRS, UMR 7221, Muséum National d'Histoire Naturelle, F-75005 Paris France.
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Abdraboh ME, Abdeen SH, Salama M, El-Husseiny M, El-Sherbini YM, Eldeen NM. Developmental neurotoxic effects of a low dose of TCE on a 3-D neurosphere system. Biochem Cell Biol 2017; 96:50-56. [PMID: 29040813 DOI: 10.1139/bcb-2017-0089] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Trichloroethylene (TCE) is one of the industrial toxic byproducts that now persist in the air, soil, and water. Several studies have already illustrated the toxic effect of high doses of TCE on the biological functions of several organs. This study aims to highlight the toxic impact of a low dose of TCE (1 μmol/L) on the development of rat neural stem cells (NSCs). The subventricular zones (SVZ) of rat pup's brains were collected and minced, and the harvested cells were cultured in the presence of neural growth factors B27/N2 to develop neurospheres. The cells were then exposed to a dose of 1 μmol/L TCE for 1 or 2 weeks. The outcomes indicated a remarkable inhibitory effect of TCE on the differentiation capacity of NSCs, which was confirmed by down-regulation of the astrocyte marker GFAP The inhibitory effect of TCE on the proliferation of NSCs was identified by the reductions in neurosphere diameter, Ki67 expression, and cell cycle arrest at the G1/S phase. Immunolabelling with annexin V indicated the proapoptotic effect of TCE exposure. PCR results revealed a TCE-mediated suppression of the expression of the antioxidant enzyme SOD1. This paper illustrates, for the first time, a detailed examination of the toxic effects of an environmentally low dose of TCE on NCSs at the transcriptional, translational, and functional levels.
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Affiliation(s)
- M E Abdraboh
- a Department of Zoology, Faculty of Science, Mansoura University, Mansoura 35116, Egypt
| | - S H Abdeen
- a Department of Zoology, Faculty of Science, Mansoura University, Mansoura 35116, Egypt
| | - M Salama
- b Department of Toxicology, Faculty of Medicine, Mansoura University, Mansoura 35116, Egypt
| | - M El-Husseiny
- b Department of Toxicology, Faculty of Medicine, Mansoura University, Mansoura 35116, Egypt
| | - Y M El-Sherbini
- c Faculty of Health and Life Science, Oxford Brookes University, Headington Campus, Oxford, OX3 0BP, UK
| | - N M Eldeen
- a Department of Zoology, Faculty of Science, Mansoura University, Mansoura 35116, Egypt
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El Tabaa MM, Sokkar SS, Ramadan ES, Abd El Salam IZ, Zaid A. Neuroprotective role of Ginkgo biloba against cognitive deficits associated with Bisphenol A exposure: An animal model study. Neurochem Int 2017; 108:199-212. [DOI: 10.1016/j.neuint.2017.03.019] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2016] [Revised: 03/02/2017] [Accepted: 03/03/2017] [Indexed: 12/22/2022]
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Wang X, Li W, Li S, Yan J, Wilson JX, Huang G. Maternal Folic Acid Supplementation During Pregnancy Improves Neurobehavioral Development in Rat Offspring. Mol Neurobiol 2017; 55:2676-2684. [PMID: 28421540 DOI: 10.1007/s12035-017-0534-2] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2017] [Accepted: 04/06/2017] [Indexed: 10/19/2022]
Abstract
Maternal folate status during pregnancy may influence central nervous system (CNS) development in offspring. However, the recommended intakes of folic acid for women of childbearing age differ among countries and there is still no consensus about whether folic acid should be supplemented continuously throughout pregnancy. We hypothesized that folic acid supplementation may be more beneficial for offspring's neurobehavioral development if prolonged throughout pregnancy instead of being limited to the periconceptional period. In this study, three groups of the female rats were fed folate-normal, folate-deficient, or folate-supplemented diets throughout pregnancy. In another group, the female rats were fed folate-supplemented diet from mating for 10 consecutive days and then fed folate-normal diet for remainder days of pregnancy. The results showed that maternal folate deficiency increased plasma homocysteine (Hcy) concentration in dams, delayed early sensory-motor reflex development, impaired spatial learning and memory ability, and caused ultrastructural damages in the hippocampus of offspring. Maternal folic acid supplementation would be more effective on improving early sensory-motor reflex development and spatial learning and memory ability in offspring if prolonged throughout pregnancy instead of being limited to the periconceptional period. In conclusion, prolonged maternal folic acid supplementation throughout pregnancy would be more effective in neurobehavioral development of offspring in rats.
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Affiliation(s)
- Xinyan Wang
- Department of Nutrition and Food Science, School of Public Health, Tianjin Medical University, 22 Qixiangtai Road, Heping District, Tianjin, 300070, China
| | - Wen Li
- Department of Nutrition and Food Science, School of Public Health, Tianjin Medical University, 22 Qixiangtai Road, Heping District, Tianjin, 300070, China
| | - Shou Li
- Department of Nutrition and Food Science, School of Public Health, Tianjin Medical University, 22 Qixiangtai Road, Heping District, Tianjin, 300070, China
| | - Jing Yan
- Department of Nutrition and Food Science, School of Public Health, Tianjin Medical University, 22 Qixiangtai Road, Heping District, Tianjin, 300070, China
| | - John X Wilson
- Department of Exercise and Nutrition Sciences, School of Public Health and Health Professions, University at Buffalo, Buffalo, NY, USA
| | - Guowei Huang
- Department of Nutrition and Food Science, School of Public Health, Tianjin Medical University, 22 Qixiangtai Road, Heping District, Tianjin, 300070, China.
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Arambula SE, Belcher SM, Planchart A, Turner SD, Patisaul HB. Impact of Low Dose Oral Exposure to Bisphenol A (BPA) on the Neonatal Rat Hypothalamic and Hippocampal Transcriptome: A CLARITY-BPA Consortium Study. Endocrinology 2016; 157:3856-3872. [PMID: 27571134 PMCID: PMC5045502 DOI: 10.1210/en.2016-1339] [Citation(s) in RCA: 59] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/19/2016] [Accepted: 08/23/2016] [Indexed: 11/19/2022]
Abstract
Bisphenol A (BPA) is an endocrine disrupting, high volume production chemical found in a variety of products. Evidence of prenatal exposure has raised concerns that developmental BPA may disrupt sex-specific brain organization and, consequently, induce lasting changes on neurophysiology and behavior. We and others have shown that exposure to BPA at doses below the no-observed-adverse-effect level can disrupt the sex-specific expression of estrogen-responsive genes in the neonatal rat brain including estrogen receptors (ERs). The present studies, conducted as part of the Consortium Linking Academic and Regulatory Insights of BPA Toxicity program, expanded this work by examining the hippocampal and hypothalamic transcriptome on postnatal day 1 with the hypothesis that genes sensitive to estrogen and/or sexually dimorphic in expression would be altered by prenatal BPA exposure. NCTR Sprague-Dawley dams were gavaged from gestational day 6 until parturition with BPA (0-, 2.5-, 25-, 250-, 2500-, or 25 000-μg/kg body weight [bw]/d). Ethinyl estradiol was used as a reference estrogen (0.05- or 0.5-μg/kg bw/d). Postnatal day 1 brains were microdissected and gene expression was assessed with RNA-sequencing (0-, 2.5-, and 2500-μg/kg bw BPA groups only) and/or quantitative real-time PCR (all exposure groups). BPA-related transcriptional changes were mainly confined to the hypothalamus. Consistent with prior observations, BPA induced sex-specific effects on hypothalamic ERα and ERβ (Esr1 and Esr2) expression and hippocampal and hypothalamic oxytocin (Oxt) expression. These data demonstrate prenatal BPA exposure, even at doses below the current no-observed-adverse-effect level, can alter gene expression in the developing brain.
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Affiliation(s)
- Sheryl E Arambula
- Department of Biological Sciences (S.E.A., S.M.B., A.P., H.B.P.), Keck Center for Behavioral Biology (S.E.A., H.B.P.), and Center for Human Health and the Environment (S.E.A., S.M.B., A.P., H.B.P.), North Carolina State University, Raleigh, North Carolina 27695; and Department of Public Health Sciences (S.D.T.), University of Virginia School of Medicine, Charlottesville, Virginia 22908
| | - Scott M Belcher
- Department of Biological Sciences (S.E.A., S.M.B., A.P., H.B.P.), Keck Center for Behavioral Biology (S.E.A., H.B.P.), and Center for Human Health and the Environment (S.E.A., S.M.B., A.P., H.B.P.), North Carolina State University, Raleigh, North Carolina 27695; and Department of Public Health Sciences (S.D.T.), University of Virginia School of Medicine, Charlottesville, Virginia 22908
| | - Antonio Planchart
- Department of Biological Sciences (S.E.A., S.M.B., A.P., H.B.P.), Keck Center for Behavioral Biology (S.E.A., H.B.P.), and Center for Human Health and the Environment (S.E.A., S.M.B., A.P., H.B.P.), North Carolina State University, Raleigh, North Carolina 27695; and Department of Public Health Sciences (S.D.T.), University of Virginia School of Medicine, Charlottesville, Virginia 22908
| | - Stephen D Turner
- Department of Biological Sciences (S.E.A., S.M.B., A.P., H.B.P.), Keck Center for Behavioral Biology (S.E.A., H.B.P.), and Center for Human Health and the Environment (S.E.A., S.M.B., A.P., H.B.P.), North Carolina State University, Raleigh, North Carolina 27695; and Department of Public Health Sciences (S.D.T.), University of Virginia School of Medicine, Charlottesville, Virginia 22908
| | - Heather B Patisaul
- Department of Biological Sciences (S.E.A., S.M.B., A.P., H.B.P.), Keck Center for Behavioral Biology (S.E.A., H.B.P.), and Center for Human Health and the Environment (S.E.A., S.M.B., A.P., H.B.P.), North Carolina State University, Raleigh, North Carolina 27695; and Department of Public Health Sciences (S.D.T.), University of Virginia School of Medicine, Charlottesville, Virginia 22908
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Manshack LK, Conard CM, Johnson SA, Alex JM, Bryan SJ, Deem SL, Holliday DK, Ellersieck MR, Rosenfeld CS. Effects of developmental exposure to bisphenol A and ethinyl estradiol on spatial navigational learning and memory in painted turtles (Chrysemys picta). Horm Behav 2016; 85:48-55. [PMID: 27476434 DOI: 10.1016/j.yhbeh.2016.07.009] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/18/2016] [Revised: 06/13/2016] [Accepted: 07/27/2016] [Indexed: 12/22/2022]
Abstract
Developmental exposure of turtles and other reptiles to endocrine disrupting chemicals (EDCs), including bisphenol A (BPA) and ethinyl estradiol (EE2, estrogen present in birth control pills), can induce partial to full gonadal sex-reversal in males. No prior studies have considered whether in ovo exposure to EDCs disrupts normal brain sexual differentiation. Yet, rodent model studies indicate early exposure to these chemicals disturbs sexually selected behavioral traits, including spatial navigational learning and memory. Thus, we sought to determine whether developmental exposure of painted turtles (Chrysemys picta) to BPA and EE2 results in sex-dependent behavioral changes. At developmental stage 17, turtles incubated at 26⁰C (male-inducing temperature) were treated with 1) BPA High (100μg /mL), 2) BPA Low (0.01μg/mL), 3) EE2 (0.2μg/mL), or 4) vehicle or no vehicle control groups. Five months after hatching, turtles were tested with a spatial navigational test that included four food containers, only one of which was baited with food. Each turtle was randomly assigned one container that did not change over the trial period. Each individual was tested for 14 consecutive days. Results show developmental exposure to BPA High and EE2 improved spatial navigational learning and memory, as evidenced by increased number of times spent in the correct target zone and greater likelihood of solving the maze compared to control turtles. This study is the first to show that in addition to overriding temperature sex determination (TSD) of the male gonad, these EDCs may induce sex-dependent behavioral changes in turtles.
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Affiliation(s)
- Lindsey K Manshack
- Bond Life Sciences Center, University of Missouri, Columbia, MO 65211, USA; Biomedical Sciences, University of Missouri, Columbia, MO 65211, USA
| | - Caroline M Conard
- Bond Life Sciences Center, University of Missouri, Columbia, MO 65211, USA; Biomedical Sciences, University of Missouri, Columbia, MO 65211, USA
| | - Sarah A Johnson
- Bond Life Sciences Center, University of Missouri, Columbia, MO 65211, USA; Biomedical Sciences, University of Missouri, Columbia, MO 65211, USA
| | - Jorden M Alex
- Bond Life Sciences Center, University of Missouri, Columbia, MO 65211, USA; Biomedical Sciences, University of Missouri, Columbia, MO 65211, USA
| | - Sara J Bryan
- Veterinary Medicine and Surgery, University of Missouri, Columbia, MO 65211, USA
| | - Sharon L Deem
- Veterinary Medicine and Surgery, University of Missouri, Columbia, MO 65211, USA; Saint Louis Zoo Institute for Conservation Medicine, St. Louis, MO 63110, USA
| | - Dawn K Holliday
- Pathology and Anatomical Sciences, School of Medicine, University of Missouri, Columbia, MO 65212, USA; Department of Biology and Environmental Sciences, Westminster College, Fulton, MO 65251, USA
| | - Mark R Ellersieck
- Agriculture Experimental Station-Statistics, University of Missouri, Columbia, MO 65211, USA
| | - Cheryl S Rosenfeld
- Bond Life Sciences Center, University of Missouri, Columbia, MO 65211, USA; Biomedical Sciences, University of Missouri, Columbia, MO 65211, USA; Genetics Area Program, University of Missouri, Columbia, MO 65211, USA; Thompson Center for Autism and Neurobehavioral Disorders, University of Missouri, Columbia, MO 65211, USA.
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Du Y, Zhang S, Yu T, Du G, Zhang H, Yin Z. Wnt3a is critical for endothelial progenitor cell-mediated neural stem cell proliferation and differentiation. Mol Med Rep 2016; 14:2473-82. [PMID: 27484039 PMCID: PMC4991675 DOI: 10.3892/mmr.2016.5582] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2015] [Accepted: 07/20/2016] [Indexed: 01/10/2023] Open
Abstract
The present study aimed to determine whether co-culture with bone marrow‑derived endothelial progenitor cells (EPCs) affects the proliferation and differentiation of spinal cord-derived neural stem cells (NSCs), and to investigate the underlying mechanism. The proliferation and differentiation of the NSCs were evaluated by an MTT cell proliferation and cytotoxicity assay, and immunofluorescence, respectively. The number of neurospheres and the number of β‑tubulin III‑positive cells were detected by microscopy. The wingless‑type MMTV integration site family, member 3a (Wnt3a)/β-catenin signaling pathway was analyzed by western blot analysis and reverse transcription‑quantitative polymerase chain reaction to elucidate the possible mechanisms of EPC‑mediated NSC proliferation and differentiation. The results revealed that co‑culture with EPCs significantly induced NSC proliferation and differentiation. In addition, co‑culture with EPCs markedly induced the expression levels of Wnt3a and β‑catenin and inhibited the phosphorylation of glycogen synthase kinase 3β (GSK‑3β). By contrast, Wnt3a knockdown using a short hairpin RNA plasmid in the EPCs reduced EPC‑mediated NSC proliferation and differentiation, accompanied by inhibition of the EPC‑mediated expression of β‑catenin, and its phosphorylation and activation of GSK‑3β. Taken together, the findings of the present study demonstrated that Wnt3a was critical for EPC‑mediated NSC proliferation and differentiation.
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Affiliation(s)
- Yibin Du
- Department of Orthopedics, First Affiliated Hospital of Anhui Medical University, Hefei, Anhui 230022, P.R. China
| | - Shuo Zhang
- Department of Orthopedics, First Affiliated Hospital of Anhui Medical University, Hefei, Anhui 230022, P.R. China
| | - Tao Yu
- Department of Orthopedics, First Affiliated Hospital of Anhui Medical University, Hefei, Anhui 230022, P.R. China
| | - Gongwen Du
- Department of Orthopedics, First Affiliated Hospital of Anhui Medical University, Hefei, Anhui 230022, P.R. China
| | - Hui Zhang
- Department of Orthopedics, First Affiliated Hospital of Anhui Medical University, Hefei, Anhui 230022, P.R. China
| | - Zongsheng Yin
- Department of Orthopedics, First Affiliated Hospital of Anhui Medical University, Hefei, Anhui 230022, P.R. China
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Agarwal S, Yadav A, Tiwari SK, Seth B, Chauhan LKS, Khare P, Ray RS, Chaturvedi RK. Dynamin-related Protein 1 Inhibition Mitigates Bisphenol A-mediated Alterations in Mitochondrial Dynamics and Neural Stem Cell Proliferation and Differentiation. J Biol Chem 2016; 291:15923-39. [PMID: 27252377 DOI: 10.1074/jbc.m115.709493] [Citation(s) in RCA: 73] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2015] [Indexed: 11/06/2022] Open
Abstract
The regulatory dynamics of mitochondria comprises well orchestrated distribution and mitochondrial turnover to maintain the mitochondrial circuitry and homeostasis inside the cells. Several pieces of evidence suggested impaired mitochondrial dynamics and its association with the pathogenesis of neurodegenerative disorders. We found that chronic exposure of synthetic xenoestrogen bisphenol A (BPA), a component of consumer plastic products, impaired autophagy-mediated mitochondrial turnover, leading to increased oxidative stress, mitochondrial fragmentation, and apoptosis in hippocampal neural stem cells (NSCs). It also inhibited hippocampal derived NSC proliferation and differentiation, as evident by the decreased number of BrdU- and β-III tubulin-positive cells. All these effects were reversed by the inhibition of oxidative stress using N-acetyl cysteine. BPA up-regulated the levels of Drp-1 (dynamin-related protein 1) and enhanced its mitochondrial translocation, with no effect on Fis-1, Mfn-1, Mfn-2, and Opa-1 in vitro and in the hippocampus. Moreover, transmission electron microscopy studies suggested increased mitochondrial fission and accumulation of fragmented mitochondria and decreased elongated mitochondria in the hippocampus of the rat brain. Impaired mitochondrial dynamics by BPA resulted in increased reactive oxygen species and malondialdehyde levels, disruption of mitochondrial membrane potential, and ATP decline. Pharmacological (Mdivi-1) and genetic (Drp-1siRNA) inhibition of Drp-1 reversed BPA-induced mitochondrial dysfunctions, fragmentation, and apoptosis. Interestingly, BPA-mediated inhibitory effects on NSC proliferation and neuronal differentiations were also mitigated by Drp-1 inhibition. On the other hand, Drp-1 inhibition blocked BPA-mediated Drp-1 translocation, leading to decreased apoptosis of NSC. Overall, our studies implicate Drp-1 as a potential therapeutic target against BPA-mediated impaired mitochondrial dynamics and neurodegeneration in the hippocampus.
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Affiliation(s)
- Swati Agarwal
- From the Developmental Toxicology Laboratory, Systems Toxicology and Health Risk Assessment Group and the Academy of Scientific and Innovative Research and
| | - Anuradha Yadav
- From the Developmental Toxicology Laboratory, Systems Toxicology and Health Risk Assessment Group and the Academy of Scientific and Innovative Research and
| | - Shashi Kant Tiwari
- From the Developmental Toxicology Laboratory, Systems Toxicology and Health Risk Assessment Group and the Academy of Scientific and Innovative Research and
| | - Brashket Seth
- From the Developmental Toxicology Laboratory, Systems Toxicology and Health Risk Assessment Group and the Academy of Scientific and Innovative Research and
| | - Lalit Kumar Singh Chauhan
- the Central Instrumentation Facility, Council of Scientific and Industrial Research-Indian Institute of Toxicology Research (CSIR-IITR), Vishvigyan Bhawan, 31, Mahatma Gandhi Marg, Lucknow 226001, Uttar Pradesh, India
| | - Puneet Khare
- From the Developmental Toxicology Laboratory, Systems Toxicology and Health Risk Assessment Group and
| | - Ratan Singh Ray
- the Photobiology Laboratory, Systems Toxicology and Health Risk Assessment Group
| | - Rajnish Kumar Chaturvedi
- From the Developmental Toxicology Laboratory, Systems Toxicology and Health Risk Assessment Group and the Academy of Scientific and Innovative Research and
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47
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Johnson SA, Javurek AB, Painter MS, Ellersieck MR, Welsh TH, Camacho L, Lewis SM, Vanlandingham MM, Ferguson SA, Rosenfeld CS. Effects of developmental exposure to bisphenol A on spatial navigational learning and memory in rats: A CLARITY-BPA study. Horm Behav 2016; 80:139-148. [PMID: 26436835 PMCID: PMC4818668 DOI: 10.1016/j.yhbeh.2015.09.005] [Citation(s) in RCA: 61] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/20/2015] [Revised: 08/22/2015] [Accepted: 09/30/2015] [Indexed: 11/23/2022]
Abstract
Bisphenol A (BPA) is a ubiquitous industrial chemical used in the production of a wide variety of items. Previous studies suggest BPA exposure may result in neuro-disruptive effects; however, data are inconsistent across animal and human studies. As part of the Consortium Linking Academic and Regulatory Insights on BPA Toxicity (CLARITY-BPA), we sought to determine whether female and male rats developmentally exposed to BPA demonstrated later spatial navigational learning and memory deficits. Pregnant NCTR Sprague-Dawley rats were orally dosed from gestational day 6 to parturition, and offspring were directly orally dosed until weaning (postnatal day 21). Treatment groups included a vehicle control, three BPA doses (2.5μg/kg body weight (bw)/day-[2.5], 25μg/kg bw/day-[25], and 2500μg/kg bw/day-[2500]) and a 0.5μg/kg/day ethinyl estradiol (EE)-reference estrogen dose. At adulthood, 1/sex/litter was tested for seven days in the Barnes maze. The 2500 BPA group sniffed more incorrect holes on day 7 than those in the control, 2.5 BPA, and EE groups. The 2500 BPA females were less likely than control females to locate the escape box in the allotted time (p value=0.04). Although 2.5 BPA females exhibited a prolonged latency, the effect did not reach significance (p value=0.06), whereas 2.5 BPA males showed improved latency compared to control males (p value=0.04), although the significance of this result is uncertain. No differences in serum testosterone concentration were detected in any male or female treatment groups. Current findings suggest developmental exposure of rats to BPA may disrupt aspects of spatial navigational learning and memory.
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Affiliation(s)
- Sarah A Johnson
- Bond Life Sciences Center, University of Missouri, Columbia, MO 65211, United States; Biomedical Sciences, University of Missouri, Columbia, MO 65211, United States
| | - Angela B Javurek
- Bond Life Sciences Center, University of Missouri, Columbia, MO 65211, United States; Biomedical Sciences, University of Missouri, Columbia, MO 65211, United States
| | - Michele S Painter
- Bond Life Sciences Center, University of Missouri, Columbia, MO 65211, United States; Biomedical Sciences, University of Missouri, Columbia, MO 65211, United States
| | - Mark R Ellersieck
- Agriculture Experimental Station-Statistics, University of Missouri, Columbia, MO 65211, United States
| | - Thomas H Welsh
- Department of Animal Science, Texas A&M University, College Station, TX 77843, United States
| | - Luísa Camacho
- Division of Biochemical Toxicology, National Center for Toxicological Research/Food and Drug Administration, Jefferson, AR 72079, United States
| | - Sherry M Lewis
- Office of Scientific Coordination, National Center for Toxicological Research/Food and Drug Administration, Jefferson, AR 72079, United States
| | - Michelle M Vanlandingham
- Division of Biochemical Toxicology, National Center for Toxicological Research/Food and Drug Administration, Jefferson, AR 72079, United States
| | - Sherry A Ferguson
- Division of Neurotoxicology, National Center for Toxicological Research/Food and Drug Administration, Jefferson, AR 72079, United States
| | - Cheryl S Rosenfeld
- Bond Life Sciences Center, University of Missouri, Columbia, MO 65211, United States; Biomedical Sciences, University of Missouri, Columbia, MO 65211, United States; Genetics Area Program, University of Missouri, Columbia, MO 65211, United States; Thompson Center for Autism and Neurobehavioral Disorders, University of Missouri, Columbia, MO 65211, United States.
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Ling W, Endo T, Kubo KI, Nakajima K, Kakeyama M, Tohyama C. In Utero Bisphenol A Exposure Induces Abnormal Neuronal Migration in the Cerebral Cortex of Mice. Front Endocrinol (Lausanne) 2016; 7:7. [PMID: 26869994 PMCID: PMC4733926 DOI: 10.3389/fendo.2016.00007] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/06/2015] [Accepted: 01/15/2016] [Indexed: 01/21/2023] Open
Abstract
Bisphenol A (BPA) has been known to have endocrine-disrupting activity to induce reproductive and behavioral abnormalities in offspring of laboratory animal species. However, morphological basis of this abnormality during brain development is largely unknown. Cerebral cortex plays a crucial role in higher brain function, and its precisely laminated structure is formed by neuronal migration. In the present study, transfecting a plasmid (pCAG-mCherry) by in utero electroporation (IUE), we visualized developing neurons and investigated the possible effects of in utero BPA exposure on neuronal migration. Pregnant mice were exposed to BPA by osmotic pump at estimated daily doses of 0, 40 (BPA-40), or 400 (BPA-400) μg/kg from embryonic day 14.5 (E14.5) to E18.5. IUE was performed at E14.5 and neuronal migration was analyzed at E18.5. Compared with the control group, neuronal migration in the cortical plate was significantly decreased in the BPA-40 group; however, there was no significant difference in the BPA-400 group. Among several neuronal migration-related genes and cortical layer-specific genes, TrkB in the BPA-400 group was found significantly upregulated. In conclusion, in utero exposure to low BPA dose was found to disrupt neuronal migration in the cerebral cortex in a dose-specific manner.
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Affiliation(s)
- Wenting Ling
- Laboratory of Environmental Health Sciences, Center for Disease Biology and Integrative Medicine, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Toshihiro Endo
- Laboratory of Environmental Health Sciences, Center for Disease Biology and Integrative Medicine, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Ken-ichiro Kubo
- Department of Anatomy, Keio University School of Medicine, Tokyo, Japan
| | - Kazunori Nakajima
- Department of Anatomy, Keio University School of Medicine, Tokyo, Japan
| | - Masaki Kakeyama
- Laboratory of Environmental Health Sciences, Center for Disease Biology and Integrative Medicine, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
- Laboratory for Systems Neuroscience and Preventive Medicine, Faculty of Human Sciences, Waseda University, Tokorozawa, Japan
| | - Chiharu Tohyama
- Laboratory of Environmental Health Sciences, Center for Disease Biology and Integrative Medicine, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
- Environmental Biology Laboratory, Faculty of Medicine, University of Tsukuba, Tsukuba, Japan
- *Correspondence: Chiharu Tohyama,
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Tiwari SK, Seth B, Agarwal S, Yadav A, Karmakar M, Gupta SK, Choubey V, Sharma A, Chaturvedi RK. Ethosuximide Induces Hippocampal Neurogenesis and Reverses Cognitive Deficits in an Amyloid-β Toxin-induced Alzheimer Rat Model via the Phosphatidylinositol 3-Kinase (PI3K)/Akt/Wnt/β-Catenin Pathway. J Biol Chem 2015; 290:28540-28558. [PMID: 26420483 DOI: 10.1074/jbc.m115.652586] [Citation(s) in RCA: 74] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2015] [Indexed: 01/20/2023] Open
Abstract
Neurogenesis involves generation of new neurons through finely tuned multistep processes, such as neural stem cell (NSC) proliferation, migration, differentiation, and integration into existing neuronal circuitry in the dentate gyrus of the hippocampus and subventricular zone. Adult hippocampal neurogenesis is involved in cognitive functions and altered in various neurodegenerative disorders, including Alzheimer disease (AD). Ethosuximide (ETH), an anticonvulsant drug is used for the treatment of epileptic seizures. However, the effects of ETH on adult hippocampal neurogenesis and the underlying cellular and molecular mechanism(s) are yet unexplored. Herein, we studied the effects of ETH on rat multipotent NSC proliferation and neuronal differentiation and adult hippocampal neurogenesis in an amyloid β (Aβ) toxin-induced rat model of AD-like phenotypes. ETH potently induced NSC proliferation and neuronal differentiation in the hippocampus-derived NSC in vitro. ETH enhanced NSC proliferation and neuronal differentiation and reduced Aβ toxin-mediated toxicity and neurodegeneration, leading to behavioral recovery in the rat AD model. ETH inhibited Aβ-mediated suppression of neurogenic and Akt/Wnt/β-catenin pathway gene expression in the hippocampus. ETH activated the PI3K·Akt and Wnt·β-catenin transduction pathways that are known to be involved in the regulation of neurogenesis. Inhibition of the PI3K·Akt and Wnt·β-catenin pathways effectively blocked the mitogenic and neurogenic effects of ETH. In silico molecular target prediction docking studies suggest that ETH interacts with Akt, Dkk-1, and GSK-3β. Our findings suggest that ETH stimulates NSC proliferation and differentiation in vitro and adult hippocampal neurogenesis via the PI3K·Akt and Wnt·β-catenin signaling.
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Affiliation(s)
- Shashi Kant Tiwari
- Developmental Toxicology Laboratory, Systems Toxicology and Health Risk Assessment Group, Council of Scientific and Industrial Research (CSIR)-Indian Institute of Toxicology Research, 80 MG Marg, Lucknow 226001, India; Academy of Scientific and Innovative Research, Council of Scientific and Industrial Research (CSIR)-Indian Institute of Toxicology Research, 80 MG Marg, Lucknow 226001, India
| | - Brashket Seth
- Developmental Toxicology Laboratory, Systems Toxicology and Health Risk Assessment Group, Council of Scientific and Industrial Research (CSIR)-Indian Institute of Toxicology Research, 80 MG Marg, Lucknow 226001, India; Academy of Scientific and Innovative Research, Council of Scientific and Industrial Research (CSIR)-Indian Institute of Toxicology Research, 80 MG Marg, Lucknow 226001, India
| | - Swati Agarwal
- Developmental Toxicology Laboratory, Systems Toxicology and Health Risk Assessment Group, Council of Scientific and Industrial Research (CSIR)-Indian Institute of Toxicology Research, 80 MG Marg, Lucknow 226001, India; Academy of Scientific and Innovative Research, Council of Scientific and Industrial Research (CSIR)-Indian Institute of Toxicology Research, 80 MG Marg, Lucknow 226001, India
| | - Anuradha Yadav
- Developmental Toxicology Laboratory, Systems Toxicology and Health Risk Assessment Group, Council of Scientific and Industrial Research (CSIR)-Indian Institute of Toxicology Research, 80 MG Marg, Lucknow 226001, India; Academy of Scientific and Innovative Research, Council of Scientific and Industrial Research (CSIR)-Indian Institute of Toxicology Research, 80 MG Marg, Lucknow 226001, India
| | - Madhumita Karmakar
- Developmental Toxicology Laboratory, Systems Toxicology and Health Risk Assessment Group, Council of Scientific and Industrial Research (CSIR)-Indian Institute of Toxicology Research, 80 MG Marg, Lucknow 226001, India
| | - Shailendra Kumar Gupta
- Systems Toxicology and Health Risk Assessment Group, Council of Scientific and Industrial Research (CSIR)-Indian Institute of Toxicology Research, 80 MG Marg, Lucknow 226001, India
| | - Vinay Choubey
- Department of Pharmacology, Centre of Excellence for Translational Medicine; University of Tartu, Tartu 50411, Estonia
| | - Abhay Sharma
- CSIR-Institute of Genomics and Integrative Biology, Sukhdev Vihar, Mathura Road, 110025 New Delhi, India.
| | - Rajnish Kumar Chaturvedi
- Developmental Toxicology Laboratory, Systems Toxicology and Health Risk Assessment Group, Council of Scientific and Industrial Research (CSIR)-Indian Institute of Toxicology Research, 80 MG Marg, Lucknow 226001, India; Academy of Scientific and Innovative Research, Council of Scientific and Industrial Research (CSIR)-Indian Institute of Toxicology Research, 80 MG Marg, Lucknow 226001, India
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Sex-dependent effects of developmental exposure to bisphenol A and ethinyl estradiol on metabolic parameters and voluntary physical activity. J Dev Orig Health Dis 2015; 6:539-52. [PMID: 26378919 DOI: 10.1017/s2040174415001488] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Endocrine disrupting chemicals (EDC) have received considerable attention as potential obesogens. Past studies examining obesogenic potential of one widespread EDC, bisphenol A (BPA), have generally focused on metabolic and adipose tissue effects. However, physical inactivity has been proposed to be a leading cause of obesity. A paucity of studies has considered whether EDC, including BPA, affects this behavior. To test whether early exposure to BPA and ethinyl estradiol (EE, estrogen present in birth control pills) results in metabolic and such behavioral disruptions, California mice developmentally exposed to BPA and EE were tested as adults for energy expenditure (indirect calorimetry), body composition (echoMRI) and physical activity (measured by beam breaks and voluntary wheel running). Serum glucose and metabolic hormones were measured. No differences in body weight or food consumption were detected. BPA-exposed females exhibited greater variation in weight than females in control and EE groups. During the dark and light cycles, BPA females exhibited a higher average respiratory quotient than control females, indicative of metabolizing carbohydrates rather than fats. Various assessments of voluntary physical activity in the home cage confirmed that during the dark cycle, BPA and EE-exposed females were significantly less active in this setting than control females. Similar effects were not observed in BPA or EE-exposed males. No significant differences were detected in serum glucose, insulin, adiponectin and leptin concentrations. Results suggest that females developmentally exposed to BPA exhibit decreased motivation to engage in voluntary physical activity and altered metabolism of carbohydrates v. fats, which could have important health implications.
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