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Kanlayaprasit S, Saeliw T, Thongkorn S, Panjabud P, Kasitipradit K, Lertpeerapan P, Songsritaya K, Yuwattana W, Jantheang T, Jindatip D, Hu VW, Kikkawa T, Osumi N, Sarachana T. Sex-specific impacts of prenatal bisphenol A exposure on genes associated with cortical development, social behaviors, and autism in the offspring's prefrontal cortex. Biol Sex Differ 2024; 15:40. [PMID: 38750585 PMCID: PMC11094985 DOI: 10.1186/s13293-024-00614-2] [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: 02/17/2023] [Accepted: 04/29/2024] [Indexed: 05/19/2024] Open
Abstract
BACKGROUND Recent studies have shown that prenatal BPA exposure altered the transcriptome profiles of autism-related genes in the offspring's hippocampus, disrupting hippocampal neuritogenesis and causing male-specific deficits in learning. However, the sex differences in the effects of prenatal BPA exposure on the developing prefrontal cortex, which is another brain region highly implicated in autism spectrum disorder (ASD), have not been investigated. METHODS We obtained transcriptome data from RNA sequencing analysis of the prefrontal cortex of male and female rat pups prenatally exposed to BPA or control and reanalyzed. BPA-responsive genes associated with cortical development and social behaviors were selected for confirmation by qRT-PCR analysis. Neuritogenesis of primary cells from the prefrontal cortex of pups prenatally exposed to BPA or control was examined. The social behaviors of the pups were assessed using the two-trial and three-chamber tests. The male-specific impact of the downregulation of a selected BPA-responsive gene (i.e., Sema5a) on cortical development in vivo was interrogated using siRNA-mediated knockdown by an in utero electroporation technique. RESULTS Genes disrupted by prenatal BPA exposure were associated with ASD and showed sex-specific dysregulation. Sema5a and Slc9a9, which were involved in neuritogenesis and social behaviors, were downregulated only in males, while Anxa2 and Junb, which were also linked to neuritogenesis and social behaviors, were suppressed only in females. Neuritogenesis was increased in males and showed a strong inverse correlation with Sema5a and Slc9a9 expression levels, whereas, in the females, neuritogenesis was decreased and correlated with Anxa2 and Junb levels. The siRNA-mediated knockdown of Sema5a in males also impaired cortical development in utero. Consistent with Anxa2 and Junb downregulations, deficits in social novelty were observed only in female offspring but not in males. CONCLUSION This is the first study to show that prenatal BPA exposure dysregulated the expression of ASD-related genes and functions, including cortical neuritogenesis and development and social behaviors, in a sex-dependent manner. Our findings suggest that, besides the hippocampus, BPA could also exert its adverse effects through sex-specific molecular mechanisms in the offspring's prefrontal cortex, which in turn would lead to sex differences in ASD-related neuropathology and clinical manifestations, which deserves further investigation.
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Grants
- NRU59-031-HR National Research University Project, Office of Higher Education Commission
- HEA663700091 Thailand Science Research and Innovation Fund Chulalongkorn University
- GRU 6300437001-1 Ratchadapisek Somphot Fund for Supporting Research Unit, Chulalongkorn University
- GRU_64_033_37_004 Ratchadapisek Somphot Fund for Supporting Research Unit, Chulalongkorn University
- GRU 6506537004-1 Ratchadapisek Somphot Fund for Supporting Research Unit, Chulalongkorn University
- the Second Century Fund (C2F), Chulalongkorn University, Bangkok, Thailand the Second Century Fund (C2F), Chulalongkorn University, Bangkok, Thailand
- the Second Century Fund (C2F), Chulalongkorn University, Bangkok, Thailand the Second Century Fund (C2F), Chulalongkorn University, Bangkok, Thailand
- the Second Century Fund (C2F), Chulalongkorn University, Bangkok, Thailand the Second Century Fund (C2F), Chulalongkorn University, Bangkok, Thailand
- the Second Century Fund (C2F), Chulalongkorn University, Bangkok, Thailand the Second Century Fund (C2F), Chulalongkorn University, Bangkok, Thailand
- PHD/0029/2561 a Royal Golden Jubilee Ph.D. Programme Scholarship, the Thailand Research Fund and National Research Council of Thailand
- N41A650065 a Royal Golden Jubilee Ph.D. Programme Scholarship, the Thailand Research Fund and National Research Council of Thailand
- NRCT5-RGJ63001-018 a Royal Golden Jubilee Ph.D. Programme Scholarship, the Thailand Research Fund and National Research Council of Thailand
- GCUGR1125632108D-108 The 90th Anniversary Chulalongkorn University Fund (Ratchadaphiseksomphot Endowment Fund), Graduate School, Chulalongkorn University
- GCUGR1125632109D-109 The 90th Anniversary Chulalongkorn University Fund (Ratchadaphiseksomphot Endowment Fund), Graduate School, Chulalongkorn University
- GCUGR1125651062D-062 The 90th Anniversary Chulalongkorn University Fund (Ratchadaphiseksomphot Endowment Fund), Graduate School, Chulalongkorn University
- GCUGR1125651060D-060 The 90th Anniversary Chulalongkorn University Fund (Ratchadaphiseksomphot Endowment Fund), Graduate School, Chulalongkorn University
- The 100th Anniversary Chulalongkorn University Fund for Doctoral Scholarship The 100th Anniversary Chulalongkorn University Fund for Doctoral Scholarship
- The 100th Anniversary Chulalongkorn University Fund for Doctoral Scholarship The 100th Anniversary Chulalongkorn University Fund for Doctoral Scholarship
- The 100th Anniversary Chulalongkorn University Fund for Doctoral Scholarship The 100th Anniversary Chulalongkorn University Fund for Doctoral Scholarship
- The National Research Council of Thailand (NRCT) fund for research and innovation activity The National Research Council of Thailand (NRCT) fund for research and innovation activity
- The National Research Council of Thailand (NRCT) fund for research and innovation activity The National Research Council of Thailand (NRCT) fund for research and innovation activity
- The National Research Council of Thailand (NRCT) fund for research and innovation activity The National Research Council of Thailand (NRCT) fund for research and innovation activity
- The National Research Council of Thailand (NRCT) fund for research and innovation activity The National Research Council of Thailand (NRCT) fund for research and innovation activity
- The National Research Council of Thailand (NRCT) fund for research and innovation activity The National Research Council of Thailand (NRCT) fund for research and innovation activity
- Scholarship from the Graduate School Chulalongkorn University to commemorate the 72nd anniversary of His Majesty King Bhumibala Aduladeja Scholarship from the Graduate School Chulalongkorn University to commemorate the 72nd anniversary of His Majesty King Bhumibala Aduladeja
- Chulalongkorn University Laboratory Animal Center (CULAC) Grant Chulalongkorn University Laboratory Animal Center (CULAC) Grant
- PMU-B; B36G660008 Program Management Unit for Human Resources and Institutional Development, Research and Innovation
- CE66_046_3700_003 Ratchadapisek Somphot Fund for Supporting Center of Excellence, Chulalongkorn University
- The National Research Council of Thailand (NRCT) fund for research and innovation activity
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Affiliation(s)
- Songphon Kanlayaprasit
- Chulalongkorn Autism Research and Innovation Center of Excellence (Chula ACE), Department of Clinical Chemistry, Faculty of Allied Health Sciences, Chulalongkorn University, 154 Soi Chula 12, Rama 1 Road, Bangkok, Wangmai, Pathumwan, 10330, Thailand
| | - Thanit Saeliw
- Chulalongkorn Autism Research and Innovation Center of Excellence (Chula ACE), Department of Clinical Chemistry, Faculty of Allied Health Sciences, Chulalongkorn University, 154 Soi Chula 12, Rama 1 Road, Bangkok, Wangmai, Pathumwan, 10330, Thailand
| | - Surangrat Thongkorn
- Chulalongkorn Autism Research and Innovation Center of Excellence (Chula ACE), Department of Clinical Chemistry, Faculty of Allied Health Sciences, Chulalongkorn University, 154 Soi Chula 12, Rama 1 Road, Bangkok, Wangmai, Pathumwan, 10330, Thailand
- Department of Biotechnology and Biomedicine (DTU Bioengineering), Technical University of Denmark, Kongens Lyngby, Denmark
| | - Pawinee Panjabud
- The Ph.D. Program in Clinical Biochemistry and Molecular Medicine, Department of Clinical Chemistry, Faculty of Allied Health Sciences, Chulalongkorn University, Bangkok, Thailand
| | - Kasidit Kasitipradit
- The Ph.D. Program in Clinical Biochemistry and Molecular Medicine, Department of Clinical Chemistry, Faculty of Allied Health Sciences, Chulalongkorn University, Bangkok, Thailand
| | - Pattanachat Lertpeerapan
- The Ph.D. Program in Clinical Biochemistry and Molecular Medicine, Department of Clinical Chemistry, Faculty of Allied Health Sciences, Chulalongkorn University, Bangkok, Thailand
| | - Kwanjira Songsritaya
- The M.Sc. Program in Clinical Biochemistry and Molecular Medicine, Department of Clinical Chemistry, Faculty of Allied Health Sciences, Chulalongkorn University, Bangkok, Thailand
| | - Wasana Yuwattana
- The Ph.D. Program in Clinical Biochemistry and Molecular Medicine, Department of Clinical Chemistry, Faculty of Allied Health Sciences, Chulalongkorn University, Bangkok, Thailand
| | - Thanawin Jantheang
- The Ph.D. Program in Clinical Biochemistry and Molecular Medicine, Department of Clinical Chemistry, Faculty of Allied Health Sciences, Chulalongkorn University, Bangkok, Thailand
| | - Depicha Jindatip
- Chulalongkorn Autism Research and Innovation Center of Excellence (Chula ACE), Department of Clinical Chemistry, Faculty of Allied Health Sciences, Chulalongkorn University, 154 Soi Chula 12, Rama 1 Road, Bangkok, Wangmai, Pathumwan, 10330, Thailand
- Department of Anatomy, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand
| | - Valerie W Hu
- Department of Biochemistry and Molecular Medicine, School of Medicine and Health Sciences, The George Washington University, Washington, DC, USA
| | - Takako Kikkawa
- Department of Developmental Neuroscience, Centers for Advanced Research and Translational Medicine (ART), Graduate School of Medicine, Tohoku University, Sendai, Miyagi, Japan
| | - Noriko Osumi
- Department of Developmental Neuroscience, Centers for Advanced Research and Translational Medicine (ART), Graduate School of Medicine, Tohoku University, Sendai, Miyagi, Japan
| | - Tewarit Sarachana
- Chulalongkorn Autism Research and Innovation Center of Excellence (Chula ACE), Department of Clinical Chemistry, Faculty of Allied Health Sciences, Chulalongkorn University, 154 Soi Chula 12, Rama 1 Road, Bangkok, Wangmai, Pathumwan, 10330, Thailand.
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Xu Y, Nie J, Lu C, Hu C, Chen Y, Ma Y, Huang Y, Lu L. Effects and mechanisms of bisphenols exposure on neurodegenerative diseases risk: A systemic review. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 919:170670. [PMID: 38325473 DOI: 10.1016/j.scitotenv.2024.170670] [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: 10/18/2023] [Revised: 01/12/2024] [Accepted: 02/01/2024] [Indexed: 02/09/2024]
Abstract
Environmental bisphenols (BPs) pose a global threat to human health because of their extensive use as additives in plastic products. BP residues are increasing in various environmental media (i.e., water, soil, and indoor dust) and biological and human samples (i.e., serum and brain). Both epidemiological and animal studies have determined an association between exposure to BPs and an increased risk of neurodegenerative diseases (e.g., Parkinson's disease, Alzheimer's disease, and amyotrophic lateral sclerosis), including cognitive abnormalities and behavioral disturbances. Hence, understanding the biological responses to different BPs is essential for prevention, and treatment. This study provides an overview of the underlying pathogenic molecular mechanisms as a valuable basis for understanding neurodegenerative disease responses to BPs, including accumulation of misfolded proteins, reduction of tyrosine hydroxylase and dopamine, abnormal hormone signaling, neuronal death, oxidative stress, calcium homeostasis, and inflammation. These findings provide new insights into the neurotoxic potential of BPs and ultimately contribute to a comprehensive health risk evaluation.
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Affiliation(s)
- Yeqing Xu
- School of Public Health, Hangzhou Normal University, Hangzhou, Zhejiang 311121, China
| | - Jun Nie
- School of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou, Zhejiang 311121, China; School of Engineering, Hangzhou Normal University, Hangzhou, Zhejiang 311121, China
| | - Chenghao Lu
- College of Mathematics and Computer Science, Zhejiang A & F University, Hangzhou 311300, China
| | - Chao Hu
- School of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou, Zhejiang 311121, China; School of Engineering, Hangzhou Normal University, Hangzhou, Zhejiang 311121, China
| | - Yunlu Chen
- School of Public Health, Hangzhou Normal University, Hangzhou, Zhejiang 311121, China
| | - Ying Ma
- School of Public Health, Hangzhou Normal University, Hangzhou, Zhejiang 311121, China
| | - Yuru Huang
- School of Public Health, Hangzhou Normal University, Hangzhou, Zhejiang 311121, China
| | - Liping Lu
- School of Public Health, Hangzhou Normal University, Hangzhou, Zhejiang 311121, China.
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Makowska K, Lech P, Gonkowski S. Bisphenol A Effects on Neurons' Neurochemical Character in the Urinary Bladder Intramural Ganglia of Domestic Pigs. Int J Mol Sci 2023; 24:16792. [PMID: 38069115 PMCID: PMC10706807 DOI: 10.3390/ijms242316792] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2023] [Revised: 11/14/2023] [Accepted: 11/25/2023] [Indexed: 12/18/2023] Open
Abstract
Bisphenol A (BPA), a substance globally used to produce plastics, is part of many everyday items, including bottles, food containers, electronic elements, and others. It may penetrate the environment and living organisms, negatively affecting, among others, the nervous, immune, endocrine, and cardiovascular systems. Knowledge of the impact of BPA on the urinary bladder is extremely scarce. This study investigated the influence of two doses of BPA (0.05 mg/kg body weight (b.w.)/day and 0.5 mg/kg b.w./day) given orally for 28 days on the neurons situated in the ganglia located in the urinary bladder trigone using the typical double immunofluorescence method. In the study, an increase in the percentage of neurons containing substance P (SP), galanin (GAL), a neuronal isoform of nitric oxide synthase (nNOS-used as the marker of nitrergic neurons), and/or cocaine- and amphetamine-regulated transcript (CART) peptide was noted after BPA administration. The severity of these changes depended on the dose of BPA and the type of neuronal factors studied. The most visible changes were noted in the cases of SP- and/or GAL-positive neurons after administering a higher dose of BPA. The results have shown that oral exposure to BPA, lasting even for a short time, affects the intramural neurons in the urinary bladder wall, and changes in the neurochemical characterisation of these neurons may be the first signs of BPA-induced pathological processes in this organ.
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Affiliation(s)
- Krystyna Makowska
- Department of Clinical Diagnostics, Faculty of Veterinary Medicine, University of Warmia and Mazury in Olsztyn, Oczapowskiego 14, 10-957 Olsztyn, Poland
| | - Piotr Lech
- Agri Plus sp. Z o.o., Marcelinska Street 92, 60-324 Pozan, Poland
| | - Sławomir Gonkowski
- Department of Clinical Physiology, Faculty of Veterinary Medicine, University of Warmia and Mazury in Olsztyn, Oczapowskiego 13, 10-957 Olsztyn, Poland
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Makowska K, Gonkowski S. Changes Caused by Bisphenols in the Chemical Coding of Neurons of the Enteric Nervous System of Mouse Stomach. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2023; 20:5125. [PMID: 36982030 PMCID: PMC10049369 DOI: 10.3390/ijerph20065125] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/25/2023] [Revised: 03/04/2023] [Accepted: 03/13/2023] [Indexed: 06/18/2023]
Abstract
Bisphenol A (BPA), an organic chemical compound which is widely used in the production of plastics, can severely damage live organisms. Due to these findings, the plastic industry has started to replace it with other substances, most often with bisphenol S (BPS). Therefore, during the present investigation, with the use of double immunofluorescence labeling, we compared the effect of BPA and BPS on the enteric nervous system (ENS) in the mouse corpus of the stomach. The obtained results show that both studied toxins impact the amount of nerve cells immunoreactive to substance P (SP), galanin (GAL), vesicular acetylcholine transporter (VAChT is used here as a marker of cholinergic neurons) and vasoactive intestinal polypeptide (VIP). Changes observed under the impact of both bisphenols depended on the neuronal factor, the type of the enteric ganglion and the doses of bisphenols studied. Generally, the increase in the percentage of neurons immunoreactive to SP, GAL and/or VIP, and the decrease in the percentage of VAChT-positive neurons, was noted. Severity of changes was more visible after BPA administration. However, the study has shown that long time exposure to BPS also significantly affects the ENS.
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Affiliation(s)
- Krystyna Makowska
- Department of Clinical Diagnostics, Faculty of Veterinary Medicine, University of Warmia and Mazury in Olsztyn, Oczapowskiego 14, 10-957 Olsztyn, Poland
| | - Slawomir Gonkowski
- Department of Clinical Physiology, Faculty of Veterinary Medicine, University of Warmia and Mazury in Olsztyn, Oczapowskiego 13, 10-957 Olsztyn, Poland
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Cervetto C, Pistollato F, Amato S, Mendoza-de Gyves E, Bal-Price A, Maura G, Marcoli M. Assessment of neurotransmitter release in human iPSC-derived neuronal/glial cells: a missing in vitro assay for regulatory developmental neurotoxicity testing. Reprod Toxicol 2023; 117:108358. [PMID: 36863571 PMCID: PMC10112275 DOI: 10.1016/j.reprotox.2023.108358] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2022] [Revised: 02/18/2023] [Accepted: 02/22/2023] [Indexed: 03/04/2023]
Abstract
Human induced pluripotent stem cell (hiPSC)-derived neural stem cells (NSCs) and their differentiated neuronal/glial derivatives have been recently considered suitable to assess in vitro developmental neurotoxicity (DNT) triggered by exposure to environmental chemicals. The use of human-relevant test systems combined with in vitro assays specific for different neurodevelopmental events, enables a mechanistic understanding of the possible impact of environmental chemicals on the developing brain, avoiding extrapolation uncertainties associated with in vivo studies. Currently proposed in vitro battery for regulatory DNT testing accounts for several assays suitable to study key neurodevelopmental processes, including NSC proliferation and apoptosis, differentiation into neurons and glia, neuronal migration, synaptogenesis, and neuronal network formation. However, assays suitable to measure interference of compounds with neurotransmitter release or clearance are at present not included, which represents a clear gap of the biological applicability domain of such a testing battery. Here we applied a HPLC-based methodology to measure the release of neurotransmitters in a previously characterized hiPSC-derived NSC model undergoing differentiation towards neurons and glia. Glutamate release was assessed in control cultures and upon depolarization, as well as in cultures repeatedly exposed to some known neurotoxicants (BDE47 and lead) and chemical mixtures. Obtained data indicate that these cells have the ability to release glutamate in a vesicular manner, and that both glutamate clearance and vesicular release concur in the maintenance of extracellular glutamate levels. In conclusion, analysis of neurotransmitter release is a sensitive readout that should be included in the envisioned battery of in vitro assays for DNT testing.
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Affiliation(s)
- Chiara Cervetto
- Department of Pharmacy (DIFAR), Section of Pharmacology and Toxicology, University of Genoa, Italy; Interuniversity Center for the Promotion of the 3Rs Principles in Teaching and Research, Centro 3R, Pisa, Italy.
| | | | - Sarah Amato
- Department of Pharmacy (DIFAR), Section of Pharmacology and Toxicology, University of Genoa, Italy
| | | | - Anna Bal-Price
- European Commission, Joint Research Centre, JRC, Ispra, Italy.
| | - Guido Maura
- Department of Pharmacy (DIFAR), Section of Pharmacology and Toxicology, University of Genoa, Italy
| | - Manuela Marcoli
- Department of Pharmacy (DIFAR), Section of Pharmacology and Toxicology, University of Genoa, Italy; Interuniversity Center for the Promotion of the 3Rs Principles in Teaching and Research, Centro 3R, Pisa, Italy.
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The Comparison of the Influence of Bisphenol A (BPA) and Its Analogue Bisphenol S (BPS) on the Enteric Nervous System of the Distal Colon in Mice. Nutrients 2022; 15:nu15010200. [PMID: 36615857 PMCID: PMC9824883 DOI: 10.3390/nu15010200] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2022] [Revised: 12/27/2022] [Accepted: 12/28/2022] [Indexed: 01/04/2023] Open
Abstract
Bisphenol A (BPA), commonly used as a plasticizer in various branches of industry has a strong negative effect on living organisms. Therefore, more and more often it is replaced in production of plastics by other substances. One of them is bisphenol S (BPS). This study for the first time compares the impact of BPA and BPS on the enteric neurons using double immunofluorescence technique. It has been shown that both BPA and BPS affect the number of enteric neurons containing substance P (SP), galanin (GAL), vasoactive intestinal polypeptide (VIP), neuronal isoform of nitric oxide synthase (nNOS-a marker of nitrergic neurons) and/or vesicular acetylcholine transporter (VAChT- a marker of cholinergic neurons). The changes noted under the impact of both bisphenols are similar and consisted of an increase in the number of enteric neurons immunoreactive to all neuronal factors studied. The impact of BPS on some populations of neurons was stronger than that noted under the influence of BPA. The obtained results clearly show that BPS (similarly to BPA) administered for long time is not neutral for the enteric neurons even in relatively low doses and may be more potent than BPA for certain neuronal populations.
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Hyun SA, Ko MY, Jang S, Lee BS, Rho J, Kim KK, Kim WY, Ka M. Bisphenol-A impairs synaptic formation and function by RGS4-mediated negative regulation of BDNF/NTRK2 signaling in the cerebral cortex. Dis Model Mech 2022; 15:276081. [PMID: 35781563 PMCID: PMC9346518 DOI: 10.1242/dmm.049177] [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: 06/21/2021] [Accepted: 06/06/2022] [Indexed: 12/02/2022] Open
Abstract
Bisphenol-A (BPA) is a representative endocrine disruptor, widely used in a variety of products including plastics, medical equipment and receipts. Hence, most people are exposed to BPA via the skin, digestive system or inhalation in everyday life. Furthermore, BPA crosses the blood–brain barrier and is linked to multiple neurological dysfunctions found in neurodegenerative and neuropsychological disorders. However, the mechanisms underlying BPA-associated neurological dysfunctions remain poorly understood. Here, we report that BPA exposure alters synapse morphology and function in the cerebral cortex. Cortical pyramidal neurons treated with BPA showed reduced size and number of dendrites and spines. The density of excitatory synapses was also decreased by BPA treatment. More importantly, we found that BPA disrupted normal synaptic transmission and cognitive behavior. RGS4 and its downstream BDNF/NTRK2 pathway appeared to mediate the effect of BPA on synaptic and neurological function. Our findings provide molecular mechanistic insights into anatomical and physiological neurotoxic consequences related to a potent endocrine modifier. Summary: Bisphenol-A (BPA) disrupts normal synaptic transmission and cognitive behavior in mice. Rgs4 transcription factor and its downstream BDNF/NTRK2 pathway appear to mediate the effect of BPA on synaptic and neurological function.
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Affiliation(s)
- Sung-Ae Hyun
- Department of Advanced Toxicology Research, Korea Institute of Toxicology, KRICT, Daejeon 34114, Republic of Korea.,Department of Biochemistry, Chungnam National University, Daejeon 34134, Republic of Korea
| | - Moon Yi Ko
- Department of Advanced Toxicology Research, Korea Institute of Toxicology, KRICT, Daejeon 34114, Republic of Korea.,Department of Biological Sciences, Kent State University, Kent, OH 44242, USA
| | - Sumi Jang
- Department of Advanced Toxicology Research, Korea Institute of Toxicology, KRICT, Daejeon 34114, Republic of Korea
| | - Byoung-Seok Lee
- Department of Advanced Toxicology Research, Korea Institute of Toxicology, KRICT, Daejeon 34114, Republic of Korea
| | - Jaerang Rho
- Department of Microbiology and Molecular Biology, Chungnam National University, Daejeon 34134, Republic of Korea
| | - Kee K Kim
- Department of Microbiology and Molecular Biology, Chungnam National University, Daejeon 34134, Republic of Korea
| | - Woo-Yang Kim
- Department of Biological Sciences, Kent State University, Kent, OH 44242, USA
| | - Minhan Ka
- Department of Advanced Toxicology Research, Korea Institute of Toxicology, KRICT, Daejeon 34114, Republic of Korea
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Pistollato F, Carpi D, Mendoza-de Gyves E, Paini A, Bopp SK, Worth A, Bal-Price A. Combining in vitro assays and mathematical modelling to study developmental neurotoxicity induced by chemical mixtures. Reprod Toxicol 2021; 105:101-119. [PMID: 34455033 PMCID: PMC8522961 DOI: 10.1016/j.reprotox.2021.08.007] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2021] [Revised: 07/30/2021] [Accepted: 08/24/2021] [Indexed: 12/12/2022]
Abstract
Prenatal and postnatal co-exposure to multiple chemicals at the same time may have deleterious effects on the developing nervous system. We previously showed that chemicals acting through similar mode of action (MoA) and grouped based on perturbation of brain derived neurotrophic factor (BDNF), induced greater neurotoxic effects on human induced pluripotent stem cell (hiPSC)-derived neurons and astrocytes compared to chemicals with dissimilar MoA. Here we assessed the effects of repeated dose (14 days) treatments with mixtures containing the six chemicals tested in our previous study (Bisphenol A, Chlorpyrifos, Lead(II) chloride, Methylmercury chloride, PCB138 and Valproic acid) along with 2,2'4,4'-tetrabromodiphenyl ether (BDE47), Ethanol, Vinclozolin and 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD)), on hiPSC-derived neural stem cells undergoing differentiation toward mixed neurons/astrocytes up to 21 days. Similar MoA chemicals in mixtures caused an increase of BDNF levels and neurite outgrowth, and a decrease of synapse formation, which led to inhibition of electrical activity. Perturbations of these endpoints are described as common key events in adverse outcome pathways (AOPs) specific for DNT. When compared with mixtures tested in our previous study, adding similarly acting chemicals (BDE47 and EtOH) to the mixture resulted in a stronger downregulation of synapses. A synergistic effect on some synaptogenesis-related features (PSD95 in particular) was hypothesized upon treatment with tested mixtures, as indicated by mathematical modelling. Our findings confirm that the use of human iPSC-derived mixed neuronal/glial models applied to a battery of in vitro assays anchored to key events in DNT AOP networks, combined with mathematical modelling, is a suitable testing strategy to assess in vitro DNT induced by chemical mixtures.
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Affiliation(s)
| | - Donatella Carpi
- European Commission, Joint Research Centre (JRC), Ispra, Italy
| | | | - Alicia Paini
- European Commission, Joint Research Centre (JRC), Ispra, Italy
| | | | - Andrew Worth
- European Commission, Joint Research Centre (JRC), Ispra, Italy
| | - Anna Bal-Price
- European Commission, Joint Research Centre (JRC), Ispra, Italy.
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Bisphenol A affects vipergic nervous structures in the porcine urinary bladder trigone. Sci Rep 2021; 11:12147. [PMID: 34108533 PMCID: PMC8190307 DOI: 10.1038/s41598-021-91529-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2021] [Accepted: 05/21/2021] [Indexed: 02/06/2023] Open
Abstract
Bisphenol A (BPA) is used in the production of plastics approved for contact with feed and food. Upon entering living organisms, BPA, as a potent endocrine disruptor, negatively affects various internal organs and regulatory systems, especially in young individuals. Although previous studies have described the neurotoxic effects of BPA on various tissues, it should be underlined that the putative influence of this substance on the chemical architecture of the urinary bladder intrinsic innervation has not yet been studied. One of the most important neuronal substances involved in the regulation of urinary bladder functions is vasoactive intestinal polypeptide (VIP), which primarily participates in the regulation of muscular activity and blood flow. Therefore, this study aimed to determine the influence of various doses of BPA on the distribution pattern of VIP-positive neural structures located in the wall of the porcine urinary bladder trigone using the double-immunofluorescence method. The obtained results show that BPA influence leads to an increase in the number of both neurons and nerve fibres containing VIP in the porcine urinary bladder trigone. This may indicate that VIP participates in adaptive processes of the urinary bladder evoked by BPA.
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Kobayashi Y, Oguro A, Yagi E, Mitani A, Kudoh SN, Imaoka S. Bisphenol A and rotenone induce S-nitrosylation of protein disulfide isomerase (PDI) and inhibit neurite outgrowth of primary cultured cells of the rat hippocampus and PC12 cells. J Toxicol Sci 2021; 45:783-794. [PMID: 33268678 DOI: 10.2131/jts.45.783] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Abstract
Bisphenol A (BPA) interferes the function and development of the central nervous system (CNS), resulting in behavioral abnormalities and memory loss. S-nitrosylation of protein disulfide isomerase (PDI) is increased in brains with sporadic Alzheimer's disease and Parkinson's disease. The aim of the present study was to clarify the role of nitric oxide (NO) in BPA-induced neurotoxicity. Since rotenone induces NO-mediated neurodegeneration through S-nitrosylation of PDI, it was used as a positive control. First, rats were treated with BPA and rotenone, and S-nitrosylation of PDI was detected in rat brain microsomes. BPA and rotenone decreased RNase oxidation activity of PDI concomitant with S-nitrosylation of PDI. Next, to clarify S-nitrosylation of PDI by BPA and rotenone in rat brains, we treated the rat pheochromocytoma cell line PC12 and primary cultured neuron cells from the rat hippocampus with BPA (5 and 10 μM) and rotenone (100 or 200 nM). BPA induced S-nitrosylation of PDI, while NG-monomethyl-L-arginine (L-NMMA), a NOS inhibitor, exerted the opposite effects. Finally, to evaluate the toxicity of BPA in the CNS, we investigated its effects on neurite outgrowth of PC12 and primary cultured neuron cells. BPA inhibited neurite outgrowth of these cells, while L-NMMA reversed this inhibition. The involvement of PDI activity in neurite outgrowth was also examined, and bacitracin, a PDI inhibitor, is shown to decrease neurite outgrowth. Furthermore, the overexpression of PDI, but not a catalytically inactive PDI mutant, enhanced neurite outgrowth. These results suggested that S-nitrosylation of PDI induced by excessive NO caused BPA-induced neurotoxicity.
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Affiliation(s)
- Yukino Kobayashi
- Department of Biomedical Chemistry, School of Science and Technology, Kwansei Gakuin University
| | - Ami Oguro
- Department of Biomedical Chemistry, School of Science and Technology, Kwansei Gakuin University.,Program of Biomedical Science, Graduate School of Integrated Sciences for Life, Hiroshima University
| | - Erina Yagi
- Department of Biomedical Chemistry, School of Science and Technology, Kwansei Gakuin University
| | - Akira Mitani
- Department of Human-System Interaction, School of Science and Technology, Kwansei Gakuin University
| | - Suguru N Kudoh
- Department of Human-System Interaction, School of Science and Technology, Kwansei Gakuin University
| | - Susumu Imaoka
- Department of Biomedical Chemistry, School of Science and Technology, Kwansei Gakuin University
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11
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Thongkorn S, Kanlayaprasit S, Panjabud P, Saeliw T, Jantheang T, Kasitipradit K, Sarobol S, Jindatip D, Hu VW, Tencomnao T, Kikkawa T, Sato T, Osumi N, Sarachana T. Sex differences in the effects of prenatal bisphenol A exposure on autism-related genes and their relationships with the hippocampus functions. Sci Rep 2021; 11:1241. [PMID: 33441873 PMCID: PMC7806752 DOI: 10.1038/s41598-020-80390-2] [Citation(s) in RCA: 32] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2020] [Accepted: 12/21/2020] [Indexed: 01/29/2023] Open
Abstract
Our recent study has shown that prenatal exposure to bisphenol A (BPA) altered the expression of genes associated with autism spectrum disorder (ASD). In this study, we further investigated the effects of prenatal BPA exposure on ASD-related genes known to regulate neuronal viability, neuritogenesis, and learning/memory, and assessed these functions in the offspring of exposed pregnant rats. We found that prenatal BPA exposure increased neurite length, the number of primary neurites, and the number of neurite branches, but reduced the size of the hippocampal cell body in both sexes of the offspring. However, in utero exposure to BPA decreased the neuronal viability and the neuronal density in the hippocampus and impaired learning/memory only in the male offspring while the females were not affected. Interestingly, the expression of several ASD-related genes (e.g. Mief2, Eif3h, Cux1, and Atp8a1) in the hippocampus were dysregulated and showed a sex-specific correlation with neuronal viability, neuritogenesis, and/or learning/memory. The findings from this study suggest that prenatal BPA exposure disrupts ASD-related genes involved in neuronal viability, neuritogenesis, and learning/memory in a sex-dependent manner, and these genes may play an important role in the risk and the higher prevalence of ASD in males subjected to prenatal BPA exposure.
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Affiliation(s)
- Surangrat Thongkorn
- grid.7922.e0000 0001 0244 7875The Ph.D. Program in Clinical Biochemistry and Molecular Medicine, Department of Clinical Chemistry, Faculty of Allied Health Sciences, Chulalongkorn University, Bangkok, Thailand
| | - Songphon Kanlayaprasit
- grid.7922.e0000 0001 0244 7875The Ph.D. Program in Clinical Biochemistry and Molecular Medicine, Department of Clinical Chemistry, Faculty of Allied Health Sciences, Chulalongkorn University, Bangkok, Thailand
| | - Pawinee Panjabud
- grid.7922.e0000 0001 0244 7875The Ph.D. Program in Clinical Biochemistry and Molecular Medicine, Department of Clinical Chemistry, Faculty of Allied Health Sciences, Chulalongkorn University, Bangkok, Thailand
| | - Thanit Saeliw
- grid.7922.e0000 0001 0244 7875The Ph.D. Program in Clinical Biochemistry and Molecular Medicine, Department of Clinical Chemistry, Faculty of Allied Health Sciences, Chulalongkorn University, Bangkok, Thailand
| | - Thanawin Jantheang
- grid.7922.e0000 0001 0244 7875The Ph.D. Program in Clinical Biochemistry and Molecular Medicine, Department of Clinical Chemistry, Faculty of Allied Health Sciences, Chulalongkorn University, Bangkok, Thailand
| | - Kasidit Kasitipradit
- grid.7922.e0000 0001 0244 7875The Ph.D. Program in Clinical Biochemistry and Molecular Medicine, Department of Clinical Chemistry, Faculty of Allied Health Sciences, Chulalongkorn University, Bangkok, Thailand
| | - Suthathip Sarobol
- grid.411628.80000 0000 9758 8584Specimen Center, Department of Laboratory Medicine, King Chulalongkorn Memorial Hospital, Bangkok, Thailand
| | - Depicha Jindatip
- grid.7922.e0000 0001 0244 7875Department of Anatomy, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand ,grid.7922.e0000 0001 0244 7875SYstems Neuroscience of Autism and PSychiatric Disorders (SYNAPS) Research Unit, Department of Clinical Chemistry, Faculty of Allied Health Sciences, Chulalongkorn University, Bangkok, Thailand
| | - Valerie W. Hu
- grid.253615.60000 0004 1936 9510Department of Biochemistry and Molecular Medicine, The George Washington University School of Medicine and Health Sciences, The George Washington University, Washington, DC USA
| | - Tewin Tencomnao
- grid.7922.e0000 0001 0244 7875Age-Related Inflammation and Degeneration Research Unit, Department of Clinical Chemistry, Faculty of Allied Health Sciences, Chulalongkorn University, Bangkok, Thailand
| | - Takako Kikkawa
- grid.69566.3a0000 0001 2248 6943Department of Developmental Neuroscience, United Centers for Advanced Research and Translational Medicine (ART), Tohoku University Graduate School of Medicine, Sendai, Miyagi Japan
| | - Tatsuya Sato
- grid.412754.10000 0000 9956 3487Department of Healthcare Management, Faculty of Health Sciences, Tohoku Fukushi University, Sendai, Miyagi Japan
| | - Noriko Osumi
- grid.69566.3a0000 0001 2248 6943Department of Developmental Neuroscience, United Centers for Advanced Research and Translational Medicine (ART), Tohoku University Graduate School of Medicine, Sendai, Miyagi Japan
| | - Tewarit Sarachana
- grid.7922.e0000 0001 0244 7875SYstems Neuroscience of Autism and PSychiatric Disorders (SYNAPS) Research Unit, Department of Clinical Chemistry, Faculty of Allied Health Sciences, Chulalongkorn University, Bangkok, Thailand ,grid.7922.e0000 0001 0244 7875Age-Related Inflammation and Degeneration Research Unit, Department of Clinical Chemistry, Faculty of Allied Health Sciences, Chulalongkorn University, Bangkok, Thailand
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12
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Gonkowski I, Gonkowski S, Dzika E, Wojtkiewicz J. Changes in the Population Size of Calbindin D-28k-Immunoreactive Enteric Neurons in the Porcine Caecum under the Influence of Bisphenol A: A Preliminary Study. TOXICS 2020; 9:toxics9010001. [PMID: 33379192 PMCID: PMC7824670 DOI: 10.3390/toxics9010001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/17/2020] [Revised: 12/22/2020] [Accepted: 12/24/2020] [Indexed: 11/16/2022]
Abstract
Calbindin D-28k (CB) is a calcium-binding protein widely distributed in living organisms that may act as a calcium buffer and sensory protein. CB is present in the enteric nervous system (ENS) situated in the gastrointestinal tract, which controls the majority of activities of the stomach and intestine. The influence of various doses of bisphenol A (BPA)—a chemical compound widely used in plastics production—on the number and distribution of CB-positive enteric neuronal cells in the porcine caecum was investigated with an immunofluorescence technique. The obtained results showed that low dosages of BPA resulted in an increase in the number of CB-positive neuronal cells in the myenteric (MP) and inner submucous (ISP) plexuses, whereas it did not alter the number of such neuronal cells in the outer submucous plexus (OSP). High dosages of BPA caused the increase in the amount of CB-positive perikarya in all the above-mentioned kinds of the caecal neuronal plexuses. These observations strongly suggest that CB in the ENS participates in the processes connected with the toxic activity of BPA. Most likely, the changes noted in this experiment result from the adaptive and protective properties of CB.
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Affiliation(s)
- Ignacy Gonkowski
- Students’ Scientific Club of Pathophysiologists, Department of Human Physiology and Pathophysiology, School of Medicine, University of Warmia and Mazury, 10-082 Olsztyn, Poland;
| | - Slawomir Gonkowski
- Department of Clinical Physiology, Faculty of Veterinary Medicine, University of Warmia and Mazury in Olsztyn, Oczapowskiego Str. 13, 10-718 Olsztyn, Poland
- Correspondence: (S.G.); (J.W.)
| | - Ewa Dzika
- Department of Medical Biology, Faculty of Health Sciences, University of Warmia and Mazury in Olsztyn, Żołnierska 14C Str., 10-561 Olsztyn, Poland;
| | - Joanna Wojtkiewicz
- Department of Human Physiology and Pathophysiology, School of Medicine, University of Warmia and Mazury, 10-082 Olsztyn, Poland
- Correspondence: (S.G.); (J.W.)
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13
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Szymańska K, Makowska K, Całka J, Gonkowski S. The Endocrine Disruptor Bisphenol A (BPA) Affects the Enteric Neurons Immunoreactive to Neuregulin 1 (NRG1) in the Enteric Nervous System of the Porcine Large Intestine. Int J Mol Sci 2020; 21:E8743. [PMID: 33228092 PMCID: PMC7699376 DOI: 10.3390/ijms21228743] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2020] [Revised: 11/08/2020] [Accepted: 11/16/2020] [Indexed: 12/19/2022] Open
Abstract
The enteric nervous system (ENS), located in the wall of the gastrointestinal (GI) tract, is characterized by complex organization and a high degree of neurochemical diversity of neurons. One of the less known active neuronal substances found in the enteric neurons is neuregulin 1 (NRG1), a factor known to be involved in the assurance of normal development of the nervous system. During the study, made up using the double immunofluorescence technique, the presence of NRG1 in the ENS of the selected segment of porcine large intestine (caecum, ascending and descending colon) was observed in physiological conditions, as well as under the impact of low and high doses of bisphenol A (BPA) which is commonly used in the production of plastics. In control animals in all types of the enteric plexuses, the percentage of NRG1-positive neurons oscillated around 20% of all neurons. The administration of BPA caused an increase in the number of NRG1-positive neurons in all types of the enteric plexuses and in all segments of the large intestine studied. The most visible changes were noted in the inner submucous plexus of the ascending colon, where in animals treated with high doses of BPA, the percentage of NRG1-positive neurons amounted to above 45% of all neuronal cells. The mechanisms of observed changes are not entirely clear, but probably result from neurotoxic, neurodegenerative and/or proinflammatory activity of BPA and are protective and adaptive in nature.
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Affiliation(s)
- Kamila Szymańska
- Department of Human Physiology and Pathophysiology, School of Medicine, Collegium Medicum, University of Warmia and Mazury in Olsztyn, Warszawska Str. 30, 10-082 Olsztyn, Poland
| | - Krystyna Makowska
- Department of Clinical Diagnostics, Faculty of Veterinary Medicine, University of Warmia and Mazury, Oczapowskiego Str. 13, 10-719 Olsztyn, Poland;
| | - Jarosław Całka
- Department of Clinical Physiology, Faculty of Veterinary Medicine, University of Warmia and Mazury, Oczapowskiego Str. 13, 10-719 Olsztyn, Poland; (J.C.); (S.G.)
| | - Sławomir Gonkowski
- Department of Clinical Physiology, Faculty of Veterinary Medicine, University of Warmia and Mazury, Oczapowskiego Str. 13, 10-719 Olsztyn, Poland; (J.C.); (S.G.)
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14
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Li R, Liu S, Qiu W, Yang F, Zheng Y, Xiong Y, Li G, Zheng C. Transcriptomic analysis of bisphenol AF on early growth and development of zebrafish ( Danio rerio) larvae. ENVIRONMENTAL SCIENCE AND ECOTECHNOLOGY 2020; 4:100054. [PMID: 36157705 PMCID: PMC9488094 DOI: 10.1016/j.ese.2020.100054] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/08/2020] [Revised: 07/11/2020] [Accepted: 07/12/2020] [Indexed: 05/02/2023]
Abstract
Bisphenol AF (BPAF), an alternative to bisphenol A, is widely detected in aquatic environments. Owing to health concerns, the toxic effects of BPAF on organisms are drawing attention. The present study aims to evaluate the toxicity of BPAF, combining the results of omics techniques and experiment. Employing transcriptome sequencing (RNA-seq), we obtained 391, 648, 512, and 545 differentially expressed genes (DEGs) in 0.1, 1, 10, and 100 μg/L BPAF-exposed zebrafish larvae, respectively. Gene ontology (GO) analysis and Kyoto Encyclopedia of Genes and Genomes (KEGG) enrichment revealed the early development, stimulus-response, and MAPK signaling pathway were significantly affected by BPAF. In addition, five hub genes (fgf3, fgf4, map2k1, myca, and casp3b) were highlighted as the key genes in MAPK signaling pathway using the protein-protein interaction network. Therefore, the RNA-seq results showed that early development and stimulus-response were the main processes affected by BPAF, which was consistent with our morphological and pathological results. The hatching rate of zebrafish embryos in 1 and 10 μg/L BPAF groups was significantly inhibited, and the oxidative stress indexes, including the level of total antioxidant capacity (T-AOC), superoxide dismutase (SOD), and lipid peroxidation (LPO), were significantly increased by the 100 μg/L BPAF treatment. Moreover, the activity of alkaline phosphatase (AKP) was significantly decreased in all BPAF exposure groups. In conclusion, exposure to BPAF at environmental relevant concentrations affected the early development and immune system of zebrafish larvae by modulating MAPK signaling pathway, and our results provide solid evidence for the future studies on the toxicity of bisphenols.
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Affiliation(s)
- Rongzhen Li
- State Environmental Protection Key Laboratory of Integrated Surface Water-Groundwater Pollution Control, School of Environmental Science and Engineering, Southern University of Science and Technology, Shenzhen, 518055, China
- Guangdong Provincial Key Laboratory of Soil and Groundwater Pollution Control, School of Environmental Science and Engineering, Southern University of Science and Technology, Shenzhen, 518055, China
| | - Shuai Liu
- School of Environmental and Chemical Engineering, Shanghai University, Shanghai, 200444, China
| | - Wenhui Qiu
- State Environmental Protection Key Laboratory of Integrated Surface Water-Groundwater Pollution Control, School of Environmental Science and Engineering, Southern University of Science and Technology, Shenzhen, 518055, China
- Guangdong Provincial Key Laboratory of Soil and Groundwater Pollution Control, School of Environmental Science and Engineering, Southern University of Science and Technology, Shenzhen, 518055, China
- Corresponding author. State Environmental Protection Key Laboratory of Integrated Surface Water-Groundwater Pollution Control, School of Environmental Science and Engineering, Southern University of Science and Technology, Shenzhen, 518055, China.
| | - Feng Yang
- State Environmental Protection Key Laboratory of Integrated Surface Water-Groundwater Pollution Control, School of Environmental Science and Engineering, Southern University of Science and Technology, Shenzhen, 518055, China
- Guangdong Provincial Key Laboratory of Soil and Groundwater Pollution Control, School of Environmental Science and Engineering, Southern University of Science and Technology, Shenzhen, 518055, China
| | - Yi Zheng
- State Environmental Protection Key Laboratory of Integrated Surface Water-Groundwater Pollution Control, School of Environmental Science and Engineering, Southern University of Science and Technology, Shenzhen, 518055, China
- Guangdong Provincial Key Laboratory of Soil and Groundwater Pollution Control, School of Environmental Science and Engineering, Southern University of Science and Technology, Shenzhen, 518055, China
- Shenzhen Municipal Engineering Lab of Environmental IoT Technologies, Southern University of Science and Technology, Shenzhen, 518055, Guangdong Province, China
| | - Ying Xiong
- State Environmental Protection Key Laboratory of Integrated Surface Water-Groundwater Pollution Control, School of Environmental Science and Engineering, Southern University of Science and Technology, Shenzhen, 518055, China
- Guangdong Provincial Key Laboratory of Soil and Groundwater Pollution Control, School of Environmental Science and Engineering, Southern University of Science and Technology, Shenzhen, 518055, China
| | - Guanrong Li
- State Environmental Protection Key Laboratory of Integrated Surface Water-Groundwater Pollution Control, School of Environmental Science and Engineering, Southern University of Science and Technology, Shenzhen, 518055, China
- Guangdong Provincial Key Laboratory of Soil and Groundwater Pollution Control, School of Environmental Science and Engineering, Southern University of Science and Technology, Shenzhen, 518055, China
| | - Chunmiao Zheng
- State Environmental Protection Key Laboratory of Integrated Surface Water-Groundwater Pollution Control, School of Environmental Science and Engineering, Southern University of Science and Technology, Shenzhen, 518055, China
- Guangdong Provincial Key Laboratory of Soil and Groundwater Pollution Control, School of Environmental Science and Engineering, Southern University of Science and Technology, Shenzhen, 518055, China
- Corresponding author. State Environmental Protection Key Laboratory of Integrated Surface Water-Groundwater Pollution Control, School of Environmental Science and Engineering, Southern University of Science and Technology, Shenzhen, 518055, China.
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15
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Tavakkoli A, Abnous K, Vahdati Hassani F, Hosseinzadeh H, Birner-Gruenberger R, Mehri S. Alteration of protein profile in cerebral cortex of rats exposed to bisphenol a: a proteomics study. Neurotoxicology 2020; 78:1-10. [DOI: 10.1016/j.neuro.2020.01.013] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2019] [Revised: 01/26/2020] [Accepted: 01/29/2020] [Indexed: 12/17/2022]
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16
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Pistollato F, de Gyves EM, Carpi D, Bopp SK, Nunes C, Worth A, Bal-Price A. Assessment of developmental neurotoxicity induced by chemical mixtures using an adverse outcome pathway concept. Environ Health 2020; 19:23. [PMID: 32093744 PMCID: PMC7038628 DOI: 10.1186/s12940-020-00578-x] [Citation(s) in RCA: 57] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2019] [Accepted: 02/11/2020] [Indexed: 05/25/2023]
Abstract
BACKGROUND In light of the vulnerability of the developing brain, mixture risk assessment (MRA) for the evaluation of developmental neurotoxicity (DNT) should be implemented, since infants and children are co-exposed to more than one chemical at a time. One possible approach to tackle MRA could be to cluster DNT chemicals in a mixture on the basis of their mode of action (MoA) into 'similar' and 'dissimilar', but still contributing to the same adverse outcome, and anchor DNT assays to common key events (CKEs) identified in DNT-specific adverse outcome pathways (AOPs). Moreover, the use of human in vitro models, such as induced pluripotent stem cell (hiPSC)-derived neuronal and glial cultures would enable mechanistic understanding of chemically-induced adverse effects, avoiding species extrapolation. METHODS HiPSC-derived neural progenitors differentiated into mixed cultures of neurons and astrocytes were used to assess the effects of acute (3 days) and repeated dose (14 days) treatments with single chemicals and in mixtures belonging to different classes (i.e., lead(II) chloride and methylmercury chloride (heavy metals), chlorpyrifos (pesticide), bisphenol A (organic compound and endocrine disrupter), valproic acid (drug), and PCB138 (persistent organic pollutant and endocrine disrupter), which are associated with cognitive deficits, including learning and memory impairment in children. Selected chemicals were grouped based on their mode of action (MoA) into 'similar' and 'dissimilar' MoA compounds and their effects on synaptogenesis, neurite outgrowth, and brain derived neurotrophic factor (BDNF) protein levels, identified as CKEs in currently available AOPs relevant to DNT, were evaluated by immunocytochemistry and high content imaging analysis. RESULTS Chemicals working through similar MoA (i.e., alterations of BDNF levels), at non-cytotoxic (IC20/100), very low toxic (IC5), or moderately toxic (IC20) concentrations, induce DNT effects in mixtures, as shown by increased number of neurons, impairment of neurite outgrowth and synaptogenesis (the most sensitive endpoint as confirmed by mathematical modelling) and increase of BDNF levels, to a certain extent reproducing autism-like cellular changes observed in the brain of autistic children. CONCLUSIONS Our findings suggest that the use of human iPSC-derived mixed neuronal/glial cultures applied to a battery of assays anchored to key events of an AOP network represents a valuable approach to identify mixtures of chemicals with potential to cause learning and memory impairment in children.
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Affiliation(s)
| | | | - Donatella Carpi
- European Commission, Joint Research Centre (JRC), Ispra, Italy
| | | | - Carolina Nunes
- European Commission, Joint Research Centre (JRC), Ispra, Italy
| | - Andrew Worth
- European Commission, Joint Research Centre (JRC), Ispra, Italy
| | - Anna Bal-Price
- European Commission, Joint Research Centre (JRC), Ispra, Italy
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17
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Denes V, Geck P, Mester A, Gabriel R. Pituitary Adenylate Cyclase-Activating Polypeptide: 30 Years in Research Spotlight and 600 Million Years in Service. J Clin Med 2019; 8:jcm8091488. [PMID: 31540472 PMCID: PMC6780647 DOI: 10.3390/jcm8091488] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2019] [Revised: 09/02/2019] [Accepted: 09/10/2019] [Indexed: 12/12/2022] Open
Abstract
Emerging from the depths of evolution, pituitary adenylate cyclase-activating polypeptide (PACAP) and its receptors (i.e., PAC1, VPAC1, VPAC2) are present in multicellular organisms from Tunicates to humans and govern a remarkable number of physiological processes. Consequently, the clinical relevance of PACAP systems spans a multifaceted palette that includes more than 40 disorders. We aimed to present the versatility of PACAP1-38 actions with a focus on three aspects: (1) when PACAP1-38 could be a cause of a malfunction, (2) when PACAP1-38 could be the cure for a malfunction, and (3) when PACAP1-38 could either improve or impair biology. PACAP1-38 is implicated in the pathophysiology of migraine and post-traumatic stress disorder whereas an outstanding protective potential has been established in ischemia and in Alzheimer’s disease. Lastly, PACAP receptors could mediate opposing effects both in cancers and in inflammation. In the light of the above, the duration and concentrations of PACAP agents must be carefully set at any application to avoid unwanted consequences. An enormous amount of data accumulated since its discovery (1989) and the first clinical trials are dated in 2017. Thus in the field of PACAP research: “this is not the end, not even the beginning of the end, but maybe the end of the beginning.”
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Affiliation(s)
- Viktoria Denes
- Department of Experimental Zoology and Neurobiology, University of Pécs, 7624 Pécs, Hungary.
| | - Peter Geck
- Department of Immunology, School of Medicine, Tufts University, Boston, MA 02111, USA.
| | - Adrienn Mester
- Department of Experimental Zoology and Neurobiology, University of Pécs, 7624 Pécs, Hungary.
| | - Robert Gabriel
- Department of Experimental Zoology and Neurobiology, University of Pécs, 7624 Pécs, Hungary.
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18
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Szymanska K, Gonkowski S. Neurochemical characterization of the enteric neurons within the porcine jejunum in physiological conditions and under the influence of bisphenol A (BPA). Neurogastroenterol Motil 2019; 31:e13580. [PMID: 30838766 DOI: 10.1111/nmo.13580] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/14/2018] [Revised: 01/29/2019] [Accepted: 02/08/2019] [Indexed: 12/18/2022]
Abstract
BACKGROUND Bisphenol A (BPA) is commonly used in the production of plastics and has multidirectional, negative effects on the living organisms. It may also affect the enteric nervous system (ENS) located in the wall of the gastrointestinal tract. Enteric neurons express many active substances, which regulate majority of intestinal activities not only in physiological conditions but also under the impact of pathological factors. METHODS The influence of various doses of BPA on the ENS of jejunum has been investigated using the double immunofluorescence technique. The commercial antibodies against substance P (SP), vasoactive intestinal polypeptide (VIP), galanin (GAL), vesicular acetylcholine transporter (VAChT), and cocaine- and amphetamine-regulated transcript peptide (CART) were used. KEY RESULTS Both doses of BPA studied changed the number of the enteric neurons immunoreactive to SP, VIP, GAL, VAChT, and CART, and the intensity of fluctuations depended on the BPA dose and on the type of the enteric plexus. Bisphenol A causes the increase in the number of neurons immunoreactive to the majority of substances studied. The only exception was VAChT-positive neurons, the number of which was lower under the impact of BPA in the comparison with physiological conditions. CONCLUSIONS & INFERENCES Even low doses of BPA cause the changes in neurochemical characterization of the enteric neurons in the jejunum. These changes may be the first sign of subclinical BPA intoxication. The mechanisms of observed changes are probably connected with neurotoxic and/or pro-inflammatory activity of BPA, but their exact mechanisms are not fully explained.
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Affiliation(s)
- Kamila Szymanska
- Department of Clinical Physiology, Faculty of Veterinary Medicine, University of Warmia and Mazury in Olsztyn, Olsztyn, Poland
| | - Slawomir Gonkowski
- Department of Clinical Physiology, Faculty of Veterinary Medicine, University of Warmia and Mazury in Olsztyn, Olsztyn, Poland
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19
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Jia Y, Sun R, Ding X, Cao C, Yang X. Bisphenol S Triggers the Migration and Invasion of Pheochromocytoma PC12 Cells via Estrogen-Related Receptor α. J Mol Neurosci 2018; 66:188-196. [PMID: 30140998 DOI: 10.1007/s12031-018-1148-5] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2018] [Accepted: 07/27/2018] [Indexed: 12/13/2022]
Abstract
Pheochromocytoma (PCC) is a tumor of the adrenal medulla for which surgical resection is the only therapy approach. Risk factors responsible for the tumorigenesis and progression of PCC are not well illustrated. Our present study revealed that an industrial chemical, bisphenol S (BPS), can promote the migration and invasion of PCC PC12 cells, which was evidenced by the upregulation of fibronectin (FN) and matrix metalloproteinases (MMP-2 and MMP-9). The inhibitor of estrogen-related receptor α (ERRα), while not estrogen receptor α/β (ERα/β) or G protein-coupled estrogen receptor (GPER), can attenuate BPS-induced cell migration. Mechanically, BPS can increase the binding between ERRα and promoter of FN1 and then induce the expression of FN in PC12 cells. Further, BPS can induce the expression of miR-10b in PC12 cells via ERRα. The upregulated miR-10b inhibited the expression of KLF4, which can suppress the migration and invasion of cancer cells. BPS can trigger the mRNA and protein expression of ERRα in PC12 cells via a time-dependent manner. Collectively, our study revealed that nanomolar BPS can trigger the migration and invasion of PC12 cells via activation and upregulation of ERRα.
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Affiliation(s)
- Yuefeng Jia
- Department of Urology, The Affiliated Hospital of Qingdao University, No.16 of Jiangsu Road, Qingdao, 266003, China
| | - Ruixia Sun
- Department of Endocrinology and Metabology, The Affiliated Hospital of Qingdao University, No.16 of Jiangsu Road, Qingdao, 266003, China
| | - Xuemei Ding
- Department of Surgery, The Affiliated Hospital of Qingdao University, No.16 of Jiangsu Road, Qingdao, 266003, China
| | - Caixia Cao
- Department of Endocrinology and Metabology, The Affiliated Hospital of Qingdao University, No.16 of Jiangsu Road, Qingdao, 266003, China.
| | - Xuecheng Yang
- Department of Urology, The Affiliated Hospital of Qingdao University, No.16 of Jiangsu Road, Qingdao, 266003, China.
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Szymanska K, Calka J, Gonkowski S. Nitric oxide as an active substance in the enteric neurons of the porcine digestive tract in physiological conditions and under intoxication with bisphenol A (BPA). Nitric Oxide 2018; 80:1-11. [PMID: 30086357 DOI: 10.1016/j.niox.2018.08.001] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2018] [Revised: 07/30/2018] [Accepted: 08/04/2018] [Indexed: 02/07/2023]
Abstract
Bisphenol A (BPA) is an organic substance, which is commonly used in the production of plastic. It is known that BPA has the negative impact on the living organism, affecting among others the reproductive organs, nervous, endocrine and immune systems. Nevertheless the knowledge about the influence of BPA on the enteric nervous system (ENS) is extremely scanty. On the other hand, nitric oxide is considered to be one of the most important neuronal factors in the ENS. The aim of the study was to investigate the influence of low and high doses of BPA on neuronal isoform nitric oxide synthase - like immunoreactive (nNOS-LI) nervous structures in the various parts of the porcine gastrointestinal (GI) tract using double immunofluorescence technique. The obtained results show that BPA affects nNOS-LI enteric neurons and nerve fibers, and the character and severity of observed changes depend on the fragment of the gastrointestinal tract, part of the ENS and dose of the toxin. It should be pointed out that even relatively low doses of BPA (0.05 mg/kg body weight/day) are not neutral for the organism and may change the number of nitrergic nervous structures in the stomach and intestine. Observed changes are probably connected with neurotoxic activity of BPA, but the exact mechanisms of them still remain unclear.
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Affiliation(s)
- Kamila Szymanska
- Department of Clinical Physiology, Faculty of Veterinary Medicine, University of Warmia and Mazury, Oczapowskiego Str. 13, 10-718, Olsztyn, Poland.
| | - Jaroslaw Calka
- Department of Clinical Physiology, Faculty of Veterinary Medicine, University of Warmia and Mazury, Oczapowskiego Str. 13, 10-718, Olsztyn, Poland
| | - Slawomir Gonkowski
- Department of Clinical Physiology, Faculty of Veterinary Medicine, University of Warmia and Mazury, Oczapowskiego Str. 13, 10-718, Olsztyn, Poland
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Abstract
Endocrine-disrupting chemicals (EDCs) influence not only endocrine functions but also neuronal development and functions. In-vivo studies have suggested the relationship of EDC-induced neurobehavioral disorders with dysfunctions of neurotransmitter mechanisms including γ-aminobutyric acid (GABA)ergic mechanisms. However, whether EDCs affect GABAergic neuron differentiation remains unclear. In the present study, we show that a representative EDC, bisphenol A (BPA), affects GABAergic neuron differentiation. Cortical neurospheres prepared from embryonic mice were exposed to BPA for 7 days, and then neuronal differentiation was induced. We found that BPA exposure resulted in a decrease in the ratio of GABAergic neurons to total neurons. However, the same exposure stimulated the differentiation of neurons expressing calbindin, a calcium-binding protein observed in a subpopulation of GABAergic neurons. These findings suggested that BPA might influence the formation of an inhibitory neuronal network in developing cerebral cortex involved in the occurrence of neurobehavioral disorders.
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Szymanska K, Gonkowski S. Bisphenol A—Induced changes in the enteric nervous system of the porcine duodenum. Neurotoxicology 2018; 66:78-86. [DOI: 10.1016/j.neuro.2018.03.008] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2018] [Revised: 03/06/2018] [Accepted: 03/19/2018] [Indexed: 12/11/2022]
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Szymanska K, Makowska K, Gonkowski S. The Influence of High and Low Doses of Bisphenol A (BPA) on the Enteric Nervous System of the Porcine Ileum. Int J Mol Sci 2018; 19:ijms19030917. [PMID: 29558425 PMCID: PMC5877778 DOI: 10.3390/ijms19030917] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2018] [Revised: 03/13/2018] [Accepted: 03/14/2018] [Indexed: 11/24/2022] Open
Abstract
Bisphenol A, used in the production of plastic, is able to leach from containers into food and cause multidirectional adverse effects in living organisms, including neurodegeneration and metabolic disorders. Knowledge of the impact of BPA on enteric neurons is practically non-existent. The destination of this study was to investigate the influence of BPA at a specific dose (0.05 mg/kg body weight/day) and at a dose ten times higher (0.5 mg/kg body weight/day), given for 28 days, on the porcine ileum. The influence of BPA on enteric neuron immunoreactive to selected neuronal active substances, including substance P (SP), vasoactive intestinal polypeptide (VIP), galanin (GAL), vesicular acetylcholine transporter (VAChT—used here as a marker of cholinergic neurons), and cocaine- and amphetamine-regulated transcript peptide (CART), was studied by the double immunofluorescence method. Both doses of BPA affected the neurochemical characterization of the enteric neurons. The observed changes depended on the type of enteric plexus but were generally characterized by an increase in the number of cells immunoreactive to the particular substances. More visible fluctuations were observed after treatment with higher doses of BPA. The results confirm that even low doses of BPA may influence the neurochemical characterization of the enteric neurons and are not neutral for living organisms.
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Affiliation(s)
- Kamila Szymanska
- Department of Clinical Physiology, Faculty of Veterinary Medicine, University of Warmia and Mazury, Oczapowskiego Str. 13, 10-719 Olsztyn, Poland.
| | - Krystyna Makowska
- Department of Clinical Physiology, Faculty of Veterinary Medicine, University of Warmia and Mazury, Oczapowskiego Str. 13, 10-719 Olsztyn, Poland.
| | - Slawomir Gonkowski
- Department of Clinical Physiology, Faculty of Veterinary Medicine, University of Warmia and Mazury, Oczapowskiego Str. 13, 10-719 Olsztyn, Poland.
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Wu X, Majumder A, Webb R, Stice SL. High content imaging quantification of multiple in vitro human neurogenesis events after neurotoxin exposure. BMC Pharmacol Toxicol 2016; 17:62. [PMID: 27903287 PMCID: PMC5131404 DOI: 10.1186/s40360-016-0107-4] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2016] [Accepted: 11/22/2016] [Indexed: 12/04/2022] Open
Abstract
Background Our objective was to test neural active compounds in a human developmental neurotoxicity (DNT) model that represents neural tube stages of vulnerability. Previously we showed that 14 days in vitro (DIV 14) was sufficient to generate cryopreserved neuronal cells for post thaw neurite recovery assays. However, short exposure and assessment may not detect toxicants that affect an early neurogenesis continuum, from a mitotic human neural progenitor (hNP) cell population through the course of neurite outgrowth in differentiating neurons. Therefore, we continuously exposed differentiating hNP cells from DIV 0 through DIV 14 to known toxicants and endocrine active compounds in order to assess at DIV 14 effects of these compounds in a human DNT maturation model for neurogenesis. Methods The Human DNT continuum (DIV 0 to DIV 14) was determined using immunocytochemistry for SOX1+ (proliferating hNP) and HuC/D+ (post mitotic neurons). The cumulative effects of five compounds was observed on neurite outgrowth in (βIII-tubulin+) and (HuC/D+) cells using high content imaging. All data were analyzed using a one-way ANOVA with a significance threshold of p < 0.05. Results During maturation in vitro, the neural cultures transitioned from uniform hNP cells (DIV 0) to predominantly mature post mitotic neuronal neurons (HuC/D+, 65%; DIV14) but also maintained a smaller population of hNP cells (SOX1+). Using this DNT maturation model system, Bis-1, testosterone, and β-estradiol inhibited neuronal maturation at micromolar levels but were unaffected by acetaminophen. β-estradiol also disrupted neurite extension at 10 μM. Treating cells in this window with Bisphenol A (BPA) significantly inhibited neurite outgrowth and branching in these continuum cultures but only at the highest concentrations tested (10 μM). Conclusions Cumulative effects of neurotoxicant exposure during a maturation continuum altered human neurogenesis at lower exposure levels than observed in acute exposure of static cryopreserved neurite recovery neurons cultures. Unlike prior acute studies, β-estradiol was highly toxic when present throughout the continuum and cytotoxicity was manifested starting early in the continuum via a non-estrogen receptor α (ER α) mechanism. Therefore, the effect of neural developmental neurotoxins can and should be determined during the dynamic process of human neural maturation. Electronic supplementary material The online version of this article (doi:10.1186/s40360-016-0107-4) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Xian Wu
- Interdisciplinary Toxicology Program, University of Georgia, Athens, GA, 30602, USA.,Regenerative Bioscience Center, University of Georgia, Athens, GA, 30602, USA
| | | | - Robin Webb
- Regenerative Bioscience Center, University of Georgia, Athens, GA, 30602, USA
| | - Steven L Stice
- Interdisciplinary Toxicology Program, University of Georgia, Athens, GA, 30602, USA. .,Regenerative Bioscience Center, University of Georgia, Athens, GA, 30602, USA. .,ArunA Biomedical, Athens, GA, 30602, USA.
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Nowicki BA, Hamada MA, Robinson GY, Jones DC. Adverse effects of bisphenol A (BPA) on the dopamine system in two distinct cell models and corpus striatum of the Sprague-Dawley rat. JOURNAL OF TOXICOLOGY AND ENVIRONMENTAL HEALTH. PART A 2016; 79:912-924. [PMID: 27494678 DOI: 10.1080/15287394.2016.1204577] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/24/2015] [Accepted: 06/18/2016] [Indexed: 06/06/2023]
Abstract
The aim of this study was to examine the effects of bisphenol A (BPA) on the brain dopamine (DA) system utilizing both in vitro models (GH3 cells, a rat pituitary cell line, and SH-SY5Y cells, a human neuroblastoma cell line) and an animal model such as Sprague-Dawley (SD) rats. First, cellular DA uptake was measured 2 or 8 h following BPA exposure (0.1-400 μM) in SH-SY5Y cells, where a significant increase in DA uptake was noted. BPA exerted no marked effect on dopamine active transporter levels in GH3 cells exposed for 8 or 24 h. However, SH-SY5Y cells displayed an increase in dopamine transporter (DAT) levels following 24 h of exposure to BPA. In contrast to DAT levels, BPA exposure produced no marked effect on DA D1 receptor levels in SH-SY5Y cells, yet a significant decrease in GH3 cells following both 8- and 24-h exposure periods was noted, suggesting that BPA exerts differential effects dependent upon cell type. BPA produced no significant effects on prolactin levels at 2 h, but a marked fall occurred at 24 h of exposure in GH3 cells. Finally, to examine the influence of dietary developmental exposure to BPA on brain DA levels in F1 offspring, SD rats were exposed to BPA (0.5-20 mg/kg) through maternal transfer and/or diet and striatal DA levels were measured on postnatal day (PND) 60 using high-performance liquid chromatography (HPLC). Data demonstrated that chronic exposure to BPA did not significantly alter striatal DA levels in the SD rat.
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Affiliation(s)
| | - Matt A Hamada
- a AZCOM , Midwestern University , Glendale , AZ , 85308 USA
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Loss of Hippocampal Oligodendrocytes Contributes to the Deficit of Contextual Fear Learning in Adult Rats Experiencing Early Bisphenol A Exposure. Mol Neurobiol 2016; 54:4524-4536. [PMID: 27364615 DOI: 10.1007/s12035-016-0003-3] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2016] [Accepted: 06/14/2016] [Indexed: 02/06/2023]
Abstract
During early development, continuous exposure to environmental contaminants such as bisphenol A (BPA) is known to alter neuronal development, resulting in aberrant brain structure and predisposing individuals to developing neuropsychiatric disorders later in life. While the altered oligodendrocyte (OL) structure and function have been casually linked to the occurrence of numerous psychiatric diseases, it remains open whether early BPA exposure (EBE) also recruits OLs to mediate its toxicity in the brain. Here, we observed that EBE from birth to postnatal day 21 caused a substantial loss of hippocampal OLs in rat pups. The OL loss was enduring and manifested even when the affected pups spanned into their adulthood. In parallel, the expression of two key proteins in mature OLs, myelin basic protein (MBP), and monocarboxylate transporter 1 (MCT1) was markedly downregulated in adult hippocampus with a considerable reduction in the number of myelinated axons. By contrast, the myelination of individual axons remained intact. The altered hippocampal OLs were related to EBE-mediated disruption of estrogen receptor (ER) signaling in developing OLs and could be readily prevented by treatment with low level of ICI 182780, an ER antagonist. Importantly, the adult rats subject to EBE exhibited clear deficit in contextual fear memory, which highly correlated with OL loss and decreased MBP and MCT1 expression in hippocampus. The OL loss may thus represent an alternative route through which EBE has its adversity on the brain and contributes to the development of neuropsychiatric illness.
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Li J, Wang Y, Fang F, Chen D, Gao Y, Liu J, Gao R, Wang J, Xiao H. Bisphenol A disrupts glucose transport and neurophysiological role of IR/IRS/AKT/GSK3β axis in the brain of male mice. ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY 2016; 43:7-12. [PMID: 26923231 DOI: 10.1016/j.etap.2015.11.025] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/25/2015] [Revised: 11/20/2015] [Accepted: 11/22/2015] [Indexed: 06/05/2023]
Abstract
Bisphenol A (BPA), one of the most prevalent chemicals for daily use, was recently reported to disturb the homeostasis of energy metabolism and insulin signaling pathways, which might contribute to the increasing prevalence rate of mild cognitive impairment (MCI). However, the underlying mechanisms are remained poorly understood. Here we studied the effects of low dose BPA on glucose transport and the IR/IRS/AKT/GSK3β axis in adult male mice to delineate the association between insulin signaling disruption and neurotoxicity mediated by BPA. Mice were treated with subcutaneous injection of 100μg/kg/d BPA or vehicle for 30 days, then the insulin signaling and glucose transporters in the hippocampus and prefrontal cortex were detected by western blot. Our results showed that mice treated with BPA displayed significant decrease of insulin sensitivity, and in glucose transporter 1, 3 (GLUT1, 3) protein levels in mouse brain. Meanwhile, hyperactivation of IR/IRS/AKT/GSK3β axis was detected in the brain of BPA treated mice. Noteworthily, significant increases of phosphorylated tau and β-APP were observed in BPA treated mice. These results strongly suggest that BPA exposure significantly disrupts brain insulin signaling and might be considered as a potential risk factor for neurodegenerative diseases.
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Affiliation(s)
- Jing Li
- Key Lab of Modern Toxicology (NJMU), Ministry of Education. Department of Toxicology, School of Public Health, Nanjing Medical University, Nanjing 211166, China
| | - Yixin Wang
- Key Lab of Modern Toxicology (NJMU), Ministry of Education. Department of Toxicology, School of Public Health, Nanjing Medical University, Nanjing 211166, China
| | - Fangfang Fang
- Key Lab of Modern Toxicology (NJMU), Ministry of Education. Department of Toxicology, School of Public Health, Nanjing Medical University, Nanjing 211166, China
| | - Donglong Chen
- Key Lab of Modern Toxicology (NJMU), Ministry of Education. Department of Toxicology, School of Public Health, Nanjing Medical University, Nanjing 211166, China
| | - Yue Gao
- Key Lab of Modern Toxicology (NJMU), Ministry of Education. Department of Toxicology, School of Public Health, Nanjing Medical University, Nanjing 211166, China
| | - Jingli Liu
- Key Lab of Modern Toxicology (NJMU), Ministry of Education. Department of Toxicology, School of Public Health, Nanjing Medical University, Nanjing 211166, China; Department of Laboratory Medicine, Nanjing Drum Tower Hospital, Nanjing University Medical School, Nanjing 210000, China
| | - Rong Gao
- Key Lab of Modern Toxicology (NJMU), Ministry of Education. Department of Toxicology, School of Public Health, Nanjing Medical University, Nanjing 211166, China
| | - Jun Wang
- Key Lab of Modern Toxicology (NJMU), Ministry of Education. Department of Toxicology, School of Public Health, Nanjing Medical University, Nanjing 211166, China.
| | - Hang Xiao
- Key Lab of Modern Toxicology (NJMU), Ministry of Education. Department of Toxicology, School of Public Health, Nanjing Medical University, Nanjing 211166, China.
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Li J, Mao R, Zhou Q, Ding L, Tao J, Ran MM, Gao ES, Yuan W, Wang JT, Hou LF. Exposure to bisphenol A (BPA) in Wistar rats reduces sperm quality with disruption of ERK signal pathway. Toxicol Mech Methods 2016; 26:180-8. [DOI: 10.3109/15376516.2016.1139024] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Wang C, Li Z, Han H, Luo G, Zhou B, Wang S, Wang J. Impairment of object recognition memory by maternal bisphenol A exposure is associated with inhibition of Akt and ERK/CREB/BDNF pathway in the male offspring hippocampus. Toxicology 2016; 341-343:56-64. [PMID: 26827910 DOI: 10.1016/j.tox.2016.01.010] [Citation(s) in RCA: 60] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2015] [Revised: 01/23/2016] [Accepted: 01/25/2016] [Indexed: 12/25/2022]
Abstract
Bisphenol A (BPA) is a commonly used endocrine-disrupting chemical used as a component of polycarbonates plastics that has potential adverse effects on human health. Exposure to BPA during development has been implicated in memory deficits, but the mechanism of action underlying the effect is not fully understood. In this study, we investigated the effect of maternal exposure to BPA on object recognition memory and the expressions of proteins important for memory, especially focusing on the ERK/CREB/BDNF pathway. Pregnant Sprague-Dawley female rats were orally treated with either vehicle or BPA (0.05, 0.5, 5 or 50 mg/kg BW/day) during days 9-20 of gestation. Male offspring were tested on postnatal day 21 with the object recognition task. Recognition memory was assessed using the object recognition index (index=the time spent exploring the novel object/(the time spent exploring the novel object+the time spent exploring the familiar object)). In the test session performed 90 min after the training session, BPA-exposed male offspring not only spent more time in exploring the familiar object at the highest dose than the control, but also displayed a significantly decreased the object recognition index at the doses of 0.5, 5 and 50 mg/kg BW/day. During the test session performed 24h after the training session, BPA-treated males did not change the time spent exploring the familiar object, but had a decreased object recognition index at 5 and 50 mg/kg BW/day, when compared to control group. These findings indicate that object recognition memory was susceptible to maternal BPA exposure. Western blot analysis of hippocampi from BPA-treated male offspring revealed a decrease in Akt, phospho-Akt, p44/42 MAPK and phospho-p44/42 MAPK protein levels, compared to controls. In addition, BPA significantly inhibited the levels of phosphorylation of CREB and BDNF in the hippocampus. Our results show that maternal BPA exposure may full impair object recognition memory, and that impairment may be related to a decrease in Akt activation and an inhibition of the ERK/CREB/BDNF pathway in the hippocampus. This study also adds new evidence that suggests BPA has an antagonistic effect on the action of estrogen in the brain.
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Affiliation(s)
- Chong Wang
- Shanxi Key Laboratory of Ecological Animal Science and Environmental Veterinary Medicine, Shanxi Agricultural University, Taigu, Shanxi 030801, PR China; Medical Experiment Center, Shaanxi University of Chinese Medicine, Xianyang, Shaanxi 712046, PR China
| | - Zhihui Li
- Shanxi Key Laboratory of Ecological Animal Science and Environmental Veterinary Medicine, Shanxi Agricultural University, Taigu, Shanxi 030801, PR China
| | - Haijun Han
- Shanxi Key Laboratory of Ecological Animal Science and Environmental Veterinary Medicine, Shanxi Agricultural University, Taigu, Shanxi 030801, PR China; The First Affiliated Hospital of College of Medicine, Zhejiang University, Hangzhou, Zhejiang 310003, PR China
| | - Guangying Luo
- Shanxi Key Laboratory of Ecological Animal Science and Environmental Veterinary Medicine, Shanxi Agricultural University, Taigu, Shanxi 030801, PR China; School of Optometry and Ophthalmology and Eye Hospital, Wenzhou Medical University, Wenzhou, Zhejiang 325027, PR China
| | - Bingrui Zhou
- Shanxi Key Laboratory of Ecological Animal Science and Environmental Veterinary Medicine, Shanxi Agricultural University, Taigu, Shanxi 030801, PR China
| | - Shaolin Wang
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, College of Veterinary Medicine, China Agriculture University, Beijing 100193, PR China.
| | - Jundong Wang
- Shanxi Key Laboratory of Ecological Animal Science and Environmental Veterinary Medicine, Shanxi Agricultural University, Taigu, Shanxi 030801, PR China.
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Scientific Opinion on the risks to public health related to the presence of bisphenol A (BPA) in foodstuffs. EFSA J 2015. [DOI: 10.2903/j.efsa.2015.3978] [Citation(s) in RCA: 528] [Impact Index Per Article: 58.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
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Visualized gene network reveals the novel target transcripts Sox2 and Pax6 of neuronal development in trans-placental exposure to bisphenol A. PLoS One 2014; 9:e100576. [PMID: 25051057 PMCID: PMC4106758 DOI: 10.1371/journal.pone.0100576] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2014] [Accepted: 05/26/2014] [Indexed: 12/12/2022] Open
Abstract
Background Bisphenol A (BPA) is a ubiquitous endocrine disrupting chemical in our daily life, and its health effect in response to prenatal exposure is still controversial. Early-life BPA exposure may impact brain development and contribute to childhood neurological disorders. The aim of the present study was to investigate molecular target genes of neuronal development in trans-placental exposure to BPA. Methodology A meta-analysis of three public microarray datasets was performed to screen for differentially expressed genes (DEGs) in exposure to BPA. The candidate genes of neuronal development were identified from gene ontology analysis in a reconstructed neuronal sub-network, and their gene expressions were determined using real-time PCR in 20 umbilical cord blood samples dichotomized into high and low BPA level groups upon the median 16.8 nM. Principal Findings Among 36 neuronal transcripts sorted from DAVID ontology clusters of 457 DEGs using the analysis of Bioconductor limma package, we found two neuronal genes, sex determining region Y-box 2 (Sox2) and paired box 6 (Pax6), had preferentially down-regulated expression (Bonferroni correction p-value <10−4 and log2-transformed fold change ≤−1.2) in response to BPA exposure. Fetal cord blood samples had the obviously attenuated gene expression of Sox2 and Pax6 in high BPA group referred to low BPA group. Visualized gene network of Cytoscape analysis showed that Sox2 and Pax6 which were contributed to neural precursor cell proliferation and neuronal differentiation might be down-regulated through sonic hedgehog (Shh), vascular endothelial growth factor A (VEGFA) and Notch signaling. Conclusions These results indicated that trans-placental BPA exposure down-regulated gene expression of Sox2 and Pax6 potentially underlying the adverse effect on childhood neuronal development.
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Nishimura Y, Nagao T, Fukushima N. Long-term pre-exposure of pheochromocytoma PC12 cells to endocrine-disrupting chemicals influences neuronal differentiation. Neurosci Lett 2014; 570:1-4. [DOI: 10.1016/j.neulet.2014.04.014] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2014] [Revised: 03/28/2014] [Accepted: 04/09/2014] [Indexed: 11/26/2022]
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Masuma R, Okuno T, Kabir Choudhuri MS, Saito T, Kurasaki M. Effect of Tinospora cordifolia on the reduction of ultraviolet radiation-induced cytotoxicity and DNA damage in PC12 cells. JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH. PART. B, PESTICIDES, FOOD CONTAMINANTS, AND AGRICULTURAL WASTES 2014; 49:416-421. [PMID: 24762179 DOI: 10.1080/03601234.2014.894777] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
The safety of Tinospora cordifolia and its potential to protect against ultraviolet radiation-induced cytotoxicity and DNA damage in PC12 cells were investigated. To evaluate the safety of T. cordifolia, cell viability and agarose gel electrophoresis were carried out using PC12 cells treated with 0 to 100 μg mL(-1) of methanol extract of T. cordifolia. T. cordifolia extracts did not show cytotoxicity ranging 0 to 100 μg mL(-1). In addition, T. cordifolia extracts significantly increased cell viability at 1 ng, 10 ng and 1 μg mL(-1) concentrations in serum-deprived medium compared to control. To confirm the protective role against UV-induced damage, PC12 cells alone or in the presence of 10 ng, 100 ng, or 1 μg mL(-1) of T. cordifolia extract were exposed to 250, 270 and 290 nm of UV radiation, which corresponded to doses of 120, 150 and 300 mJ cm(-2), respectively. Treatment with T. cordifolia extracts significantly increased the cell survival rate irradiated at 290 nm. In addition, T. cordifolia extracts significantly reduced cyclobutane pyrimidine dimer formation induced by UV irradiation at all wavelengths. In conclusion, T. cordifolia is not toxic and safe for cells. Our findings can support its application as phototherapy in the medical sector.
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Affiliation(s)
- Runa Masuma
- a Course of Environmental Adaptation Science, Division of Environmental Science Development, Graduate School of Environmental Science , Hokkaido University , Sapporo , Japan
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Wang X, Dong Q, Chen Y, Jiang H, Xiao Q, Wang Y, Li W, Bai C, Huang C, Yang D. Bisphenol A affects axonal growth, musculature and motor behavior in developing zebrafish. AQUATIC TOXICOLOGY (AMSTERDAM, NETHERLANDS) 2013; 142-143:104-13. [PMID: 23994041 DOI: 10.1016/j.aquatox.2013.07.011] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/09/2013] [Revised: 07/16/2013] [Accepted: 07/18/2013] [Indexed: 05/07/2023]
Abstract
Bisphenol A (BPA) is a ubiquitous contaminant in environment and human body. The reproductive and developmental effects of BPA exposure in aquatic and laboratory animals have been extensively studied. However, BPA exposure on the nervous system and motor behavior development are not well understood. In this study, we utilized zebrafish embryo as a model system to investigate the effect of developmental BPA exposure on larval teratology, motor behaviors, axonal growth of spinal motoneurons and muscle structure at various developmental stages. Our findings revealed that BPA exposure altered spontaneous movement, significantly decreased touch response and swimming speed in response to light stimulation in developing zebrafish. These effects were observed at the concentrations that did not yield any significant teratogenic effects. Correlated with those changes in swimming activity, BPA-induced axial muscle damage occurred at the same concentration range (1-15 μM), but disruption of axonal growth of primary and secondary motoneuron occurred only at higher concentration (15 μM). BPA-induced apoptotic cell death subsequent to initial ROS formation and oxidative DNA damage may be the underlying mechanism for axial muscle damage, suggesting the functional relevance of muscle structural changes and the observed deficits in swimming activity.
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Affiliation(s)
- Xuechun Wang
- Zhejiang Provincial Key Laboratory for Technology and Application of Model Organisms; Institute of Watershed Science and Environmental Ecology, Wenzhou Medical College, Wenzhou 325035, China
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A systematic review of Bisphenol A "low dose" studies in the context of human exposure: a case for establishing standards for reporting "low-dose" effects of chemicals. Food Chem Toxicol 2013; 62:935-48. [PMID: 23867546 DOI: 10.1016/j.fct.2013.07.007] [Citation(s) in RCA: 77] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2013] [Revised: 06/17/2013] [Accepted: 07/01/2013] [Indexed: 12/30/2022]
Abstract
Human exposure to the chemical Bisphenol A is almost ubiquitous in surveyed industrialized societies. Structural features similar to estrogen confer the ability of Bisphenol A (BPA) to bind estrogen receptors, giving BPA membership in the group of environmental pollutants called endocrine disruptors. References by scientists, the media, political entities, and non-governmental organizations to many toxicity studies as "low dose" has led to the belief that exposure levels in these studies are similar to humans, implying that BPA is toxic to humans at current exposures. Through systematic, objective comparison of our current, and a previous compilation of the "low-dose" literature to multiple estimates of human external and internal exposure levels, we found that the "low-dose" moniker describes exposures covering 8-12 orders of magnitude, the majority (91-99% of exposures) being greater than the upper bound of human exposure in the general infant, child and adult U.S. Population. "low dose" is therefore a descriptor without specific meaning regarding human exposure. Where human exposure data are available, for BPA and other environmental chemicals, reference to toxicity study exposures by direct comparison to human exposure would be more informative, more objective, and less susceptible to misunderstanding.
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Bisphenol A inhibits proliferation and induces apoptosis in micromass cultures of rat embryonic midbrain cells through the JNK, CREB and p53 signaling pathways. Food Chem Toxicol 2013; 52:76-82. [DOI: 10.1016/j.fct.2012.10.033] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2012] [Revised: 10/16/2012] [Accepted: 10/26/2012] [Indexed: 11/18/2022]
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A single exposure to bisphenol A alters the levels of important neuroproteins in adult male and female mice. Neurotoxicology 2012; 33:1390-5. [DOI: 10.1016/j.neuro.2012.09.002] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2012] [Revised: 08/14/2012] [Accepted: 09/04/2012] [Indexed: 01/15/2023]
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Neurotoxic Effects of Bisphenol AF on Calcium-Induced ROS and MAPKs. Neurotox Res 2012; 23:249-59. [DOI: 10.1007/s12640-012-9353-4] [Citation(s) in RCA: 59] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2012] [Revised: 08/06/2012] [Accepted: 08/22/2012] [Indexed: 11/30/2022]
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