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Juntao L, Wenxue L, Guangyu Y, Xudong L, Runxuan Z, Bo Z, Wei Z. Lanthanum nitrate demonstrated no genotoxicity in the conducted tests. Regul Toxicol Pharmacol 2024; 151:105670. [PMID: 38936798 DOI: 10.1016/j.yrtph.2024.105670] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2024] [Revised: 06/15/2024] [Accepted: 06/24/2024] [Indexed: 06/29/2024]
Abstract
Given the widespread applications in industrial and agricultural production, the health effects of rare earth elements (REEs) have garnered public attention, and the genotoxicity of REEs remains unclear. In this study, we evaluated the genetic effects of lanthanum nitrate, a typical representative of REEs, with guideline-compliant in vivo and in vitro methods. Genotoxicity assays, including the Ames test, comet assay, mice bone marrow erythrocyte micronucleus test, spermatogonial chromosomal aberration test, and sperm malformation assay were conducted to assess mutagenicity, chromosomal damage, DNA damage, and sperm malformation. In the Ames test, no statistically significant increase in bacterial reverse mutation frequencies was found as compared with the negative control. Mice exposed to lanthanum nitrate did not exhibit a statistically significant increase in bone marrow erythrocyte micronucleus frequencies, spermatogonial chromosomal aberration frequencies, or sperm malformation frequencies compared to the negative control (P > 0.05). Additionally, after a 24-h treatment with lanthanum nitrate at concentrations of 1.25, 5, and 20 μg/ml, no cytotoxicity was observed in CHL cells. Furthermore, the comet assay results indicate no significant DNA damage was observed even after exposure to high doses of lanthanum nitrate (20 μg/ml). In conclusion, our findings suggest that lanthanum nitrate does not exhibit genotoxicity.
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Affiliation(s)
- Li Juntao
- Department of Toxicology, Guangzhou Center for Disease Control and Prevention, Guangzhou, China
| | - Li Wenxue
- Department of Toxicology, Guangzhou Center for Disease Control and Prevention, Guangzhou, China
| | - Yang Guangyu
- Department of Toxicology, Guangzhou Center for Disease Control and Prevention, Guangzhou, China
| | - Li Xudong
- Food Safety and Health Research Center, School of Public Health, Southern Medical University, Guangzhou, China
| | - Zhuang Runxuan
- Food Safety and Health Research Center, School of Public Health, Southern Medical University, Guangzhou, China
| | - Zhang Bo
- Food Safety and Health Research Center, School of Public Health, Southern Medical University, Guangzhou, China.
| | - Zhu Wei
- Department of Toxicology, Guangzhou Center for Disease Control and Prevention, Guangzhou, China.
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2
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Ma Y, Xiao Q, Kang C, Yuan L, Zhao Z, Wang X, Liu Q, Guo W, Wei X, Hao W. Effect of lanthanum nitrate on adipogenesis in mice. J Appl Toxicol 2024; 44:542-552. [PMID: 37908164 DOI: 10.1002/jat.4558] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2023] [Revised: 10/09/2023] [Accepted: 10/10/2023] [Indexed: 11/02/2023]
Abstract
Lanthanum (La) is widely used in modern industry and agriculture because of its unique physicochemical properties and is broadly exposed in the population. Some studies have shown that La may have some effects on adipogenesis, but there is a lack of related in vivo evidence. In this study, the effects of La(NO3 )3 on adipogenesis and its associated mechanism were studied using C57BL/6J mouse model. The results showed that La(NO3 )3 exposure caused a decrease in body weight and the percentage of fat content in mice. In addition, the adipose marker molecules and specific adipogenic transcription factors decreased in both white adipose tissue (WAT) and brown adipose tissue (BAT). Detection of signaling pathway-related molecules revealed that canonical wnt/β-catenin pathway-related molecules were upregulated in both adipose tissues. In summary, in vivo exposure to La(NO3 )3 might inhibited adipogenesis in mice, possibly through upregulation of the canonical Wnt/β-catenin signaling pathway.
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Affiliation(s)
- Yuhong Ma
- Department of Toxicology, School of Public Health, Peking University, Beijing Key Laboratory of Toxicological Research and Risk Assessment for Food Safety, Beijing, 100191, China
| | - Qianqian Xiao
- Department of Toxicology, School of Public Health, Peking University, Beijing Key Laboratory of Toxicological Research and Risk Assessment for Food Safety, Beijing, 100191, China
| | - Chenping Kang
- Department of Toxicology, School of Public Health, Peking University, Beijing Key Laboratory of Toxicological Research and Risk Assessment for Food Safety, Beijing, 100191, China
| | - Lilan Yuan
- Department of Toxicology, School of Public Health, Peking University, Beijing Key Laboratory of Toxicological Research and Risk Assessment for Food Safety, Beijing, 100191, China
| | - Zhe Zhao
- Department of Toxicology, School of Public Health, Peking University, Beijing Key Laboratory of Toxicological Research and Risk Assessment for Food Safety, Beijing, 100191, China
| | - Xiaoxia Wang
- Department of Toxicology, School of Public Health, Peking University, Beijing Key Laboratory of Toxicological Research and Risk Assessment for Food Safety, Beijing, 100191, China
| | - Qianyi Liu
- Department of Toxicology, School of Public Health, Peking University, Beijing Key Laboratory of Toxicological Research and Risk Assessment for Food Safety, Beijing, 100191, China
| | - Wanqian Guo
- Department of Toxicology, School of Public Health, Peking University, Beijing Key Laboratory of Toxicological Research and Risk Assessment for Food Safety, Beijing, 100191, China
| | - Xuetao Wei
- Department of Toxicology, School of Public Health, Peking University, Beijing Key Laboratory of Toxicological Research and Risk Assessment for Food Safety, Beijing, 100191, China
| | - Weidong Hao
- Department of Toxicology, School of Public Health, Peking University, Beijing Key Laboratory of Toxicological Research and Risk Assessment for Food Safety, Beijing, 100191, China
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Kamel AA, Nassar AY, Meligy FY, Omar YA, Nassar GAY, Ezzat GM. Acetylated oligopeptide and N-acetylcysteine protect against iron overload-induced dentate gyrus hippocampal degeneration through upregulation of Nestin and Nrf2/HO-1 and downregulation of MMP-9/TIMP-1 and GFAP. Cell Biochem Funct 2024; 42:e3958. [PMID: 38396357 DOI: 10.1002/cbf.3958] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2023] [Revised: 01/29/2024] [Accepted: 02/12/2024] [Indexed: 02/25/2024]
Abstract
Iron accumulation in the brain causes oxidative stress, blood-brain barrier (BBB) breakdown, and neurodegeneration. We examined the preventive effects of acetylated oligopeptides (AOP) from whey protein on iron-induced hippocampal damage compared to N-acetyl cysteine (NAC). This 5-week study used 40 male albino rats. At the start, all rats received 150 mg/kg/day of oral NAC for a week. The 40 animals were then randomly divided into four groups: Group I (control) received a normal diet; Group II (iron overload) received 60 mg/kg/day intraperitoneal iron dextran 5 days a week for 4 weeks; Group III (NAC group) received 150 mg/kg/day NAC and iron dextran; and Group IV (AOP group) received 150 mg/kg/day AOP and iron dextran. Enzyme-linked immunosorbent assay, spectrophotometry, and qRT-PCR were used to measure MMP-9, tissue inhibitor metalloproteinase-1 (TIMP-1), MDA, reduced glutathione (GSH) levels, and nuclear factor erythroid 2-related factor 2 (Nrf2) and heme oxygenase-1 (HO-1) gene expression. Histopathological and immunohistochemical detection of nestin, claudin, caspase, and GFAP was also done. MMP-9, TIMP-1, MDA, caspase, and GFAP rose in the iron overload group, while GSH, Nrf2, HO-1, nestin, and claudin decreased. The NAC and AOP administrations improved iron overload-induced biochemical and histological alterations. We found that AOP and NAC can protect the brain hippocampus from iron overload, improve BBB disruption, and provide neuroprotection with mostly no significant difference from healthy controls.
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Affiliation(s)
- Amira A Kamel
- Department of Medical Biochemistry and Molecular Biology, Faculty of Medicine, Assiut University, Assiut, Egypt
| | - Ahmed Y Nassar
- Department of Medical Biochemistry and Molecular Biology, Faculty of Medicine, Assiut University, Assiut, Egypt
| | - Fatma Y Meligy
- Department of Restorative Dentistry and Basic Medical Sciences, Faculty of Dentistry, University of Petra, Amman, Jordan
- Department of Histology and Cell Biology, Faculty of Medicine, Assiut University, Assiut, Egypt
| | - Yomna A Omar
- Department of Biochemistry, Faculty of Pharmacy, Assiut University, Assiut, Egypt
| | - Gamal A Y Nassar
- Metabolic and Genetic Disorders Unit, Faculty of Medicine, Assiut University, Assiut, Egypt
| | - Ghada M Ezzat
- Department of Medical Biochemistry and Molecular Biology, Faculty of Medicine, Assiut University, Assiut, Egypt
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Zhu L, Cao P, Yang S, Lin F, Wang J. Prolonged exposure to environmental levels of microcystin-LR triggers ferroptosis in brain via the activation of Erk/MAPK signaling pathway. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2023; 267:115651. [PMID: 37913581 DOI: 10.1016/j.ecoenv.2023.115651] [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: 07/25/2023] [Revised: 10/16/2023] [Accepted: 10/27/2023] [Indexed: 11/03/2023]
Abstract
While existing research has illuminated the environmental dangers and neurotoxic effects of MC-LR exposure, the molecular underpinnings of brain damage from environmentally-relevant MC-LR exposure remain elusive. Employing a comprehensive approach involving RNA sequencing, histopathological examination, and biochemical analyses, we discovered genes differentially expressed and enriched in the ferroptosis pathway. This finding was associated with mitochondrial structural impairment and downregulation of Gpx4 and Slc7a11 in mice brains subjected to low-dose MC-LR over 180 days. Mirroring these findings, we noted reduced cell viability and GSH/GSSH ratio, along with an increased ROS level, in HT-22, BV-2, and bEnd.3 cells following MC-LR exposure. Intriguingly, MC-LR also amplified phospho-Erk levels in both in vivo and in vitro settings, and the effects were mitigated by treatment with PD98059, an Erk inhibitor. Taken together, our findings implicate the activation of the Erk/MAPK signaling pathway in MC-LR-induced ferroptosis, shedding valuable light on the neurotoxic mechanisms of MC-LR. These insights could guide future strategies to prevent MC-induced neurodegenerative diseases.
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Affiliation(s)
- Lingyun Zhu
- Department of Cell Biology, School of Basic Medical Sciences, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Pingping Cao
- Department of Cell Biology, School of Basic Medical Sciences, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Suisui Yang
- Department of Cell Biology, School of Basic Medical Sciences, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Fan Lin
- Department of Cell Biology, School of Basic Medical Sciences, Nanjing Medical University, Nanjing, Jiangsu, China.
| | - Jing Wang
- Department of Cell Biology, School of Basic Medical Sciences, Nanjing Medical University, Nanjing, Jiangsu, China.
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Hang Z, Zhou L, Xing C, Wen Y, Du H. The blood-brain barrier, a key bridge to treat neurodegenerative diseases. Ageing Res Rev 2023; 91:102070. [PMID: 37704051 DOI: 10.1016/j.arr.2023.102070] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2023] [Revised: 09/06/2023] [Accepted: 09/09/2023] [Indexed: 09/15/2023]
Abstract
As a highly selective and semi-permeable barrier that separates the circulating blood from the brain and central nervous system (CNS), the blood-brain barrier (BBB) plays a critical role in the onset and treatment of neurodegenerative diseases (NDs). To delay or reverse the NDs progression, the dysfunction of BBB should be improved to protect the brain from harmful substances. Simultaneously, a highly efficient drug delivery across the BBB is indispensable. Here, we summarized several methods to improve BBB dysfunction in NDs, including knocking out risk geneAPOE4, regulating circadian rhythms, restoring the gut microenvironment, and activating the Wnt/β-catenin signaling pathway. Then we discussed the advances in BBB penetration techniques, such as transient BBB opening, carrier-mediated drug delivery, and nasal administration, which facilitates drug delivery across the BBB. Furthermore, various in vivo and in vitro BBB models and research methods related to NDs are reviewed. Based on the current research progress, the treatment of NDs in the long term should prioritize the integrity of the BBB. However, a treatment approach that combines precise control of transient BBB permeability and non-invasive targeted BBB drug delivery holds profound significance in improving treatment effectiveness, safety, and clinical feasibility during drug therapy. This review involves the cross application of biology, materials science, imaging, engineering and other disciplines in the field of BBB, aiming to provide multi-dimensional research directions and clinical ideas for the treating NDs.
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Affiliation(s)
- Zhongci Hang
- School of Chemistry and Biological Engineering, University of Science and Technology Beijing, Beijing 100083, China; Daxing Research Institute, University of Science and Technology Beijing, Beijing 100083, China
| | - Liping Zhou
- School of Chemistry and Biological Engineering, University of Science and Technology Beijing, Beijing 100083, China; Daxing Research Institute, University of Science and Technology Beijing, Beijing 100083, China; Beijing Key Laboratory for Bioengineering and Sensing Technology, University of Science and Technology Beijing, Beijing 100083, China
| | - Cencan Xing
- Daxing Research Institute, University of Science and Technology Beijing, Beijing 100083, China
| | - Yongqiang Wen
- School of Chemistry and Biological Engineering, University of Science and Technology Beijing, Beijing 100083, China; Beijing Key Laboratory for Bioengineering and Sensing Technology, University of Science and Technology Beijing, Beijing 100083, China.
| | - Hongwu Du
- School of Chemistry and Biological Engineering, University of Science and Technology Beijing, Beijing 100083, China; Daxing Research Institute, University of Science and Technology Beijing, Beijing 100083, China.
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Inactivation of microglia dampens blood-brain barrier permeability and loss of dopaminergic neurons in paraquat-lesioned mice. Food Chem Toxicol 2023; 174:113692. [PMID: 36842752 DOI: 10.1016/j.fct.2023.113692] [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: 11/28/2022] [Revised: 02/15/2023] [Accepted: 02/22/2023] [Indexed: 02/26/2023]
Abstract
Prior studies indicated the involvement of neuroinflammation in the dopaminergic neurodegeneration in mice of paraquat (PQ)-induced Parkinson's disease (PD), but the underlying mechanisms remain to be elucidated. The present study explored whether microglia-mediated inflammation disrupted blood-brain barrier (BBB) and its related mechanism. C57BL/6 mice were injected intraperitoneally with PQ, twice a week for six weeks, following with or without minocycline (intraperitoneal injection, once every two days). The microglial activation, BBB permeability, expression of tight junctions (TJs) proteins and matrix metalloproteinase (MMP), as well as the loss of dopaminergic neurons and neurological deficits assessment, were evaluated. Minocycline efficiently restrained nigral microglial activation induced by PQ in mice. PQ-induced increase of EB content in the brain and excessive expression of zonula occludin-1 (ZO-1), claudin-5 and occludin were significantly dampened by minocycline treatment. Inhibition of microglial activation by minocycline greatly ameliorated the loss of dopaminergic neurons and neurological dysfunctions in PQ-exposed mice. Also, microglial inactivation downregulated the expression of MMP-2/9 in PQ-lesioned mice. These findings suggested the potential protection of suppressing microglia-mediated neuroinflammation against dopaminergic neurodegeneration through attenuating BBB disruption in a mouse of PQ-induced PD, and MMP-2/9 might involve in the contribution, which needs to be verified in future study.
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7
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Chen F, Deng Q, Wu Y, Wu Y, Chen J, Chen Y, Lin L, Qiu Y, Pan L, Zheng X, Wei L, Liu F, He B, Wang J. U-Shaped Relationship of Rare Earth Element Lanthanum and Oral Cancer Risk: A Propensity Score-Based Study in the Southeast of China. Front Public Health 2022; 10:905690. [PMID: 35646760 PMCID: PMC9133527 DOI: 10.3389/fpubh.2022.905690] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2022] [Accepted: 04/19/2022] [Indexed: 11/13/2022] Open
Abstract
As an important rare earth element (REE) extensively applied to industry, agriculture, and medicine, lanthanum (La) has attracted a host of health concerns. This study aimed to explore the relationship between La exposure and the risk of developing oral cancer through a case-control study with a large sample size. Serum La levels of 430 oral cancer patients and 1,118 healthy controls were detected by inductively coupled plasma mass spectrometry (ICP-MS). The association of La level with the risk of oral cancer was assessed in two ways: (1) as a continuous scale based on restricted cubic splines (RCS); (2) as a priori defined centile categories using multivariate logistic regression model, based on propensity score matching (PSM) and inverse probability of treatment weighting (IPTW). The RCS revealed a non-linear U-shaped relationship between serum La and oral cancer risk. Serum La deficiency or excess was associated with an increased risk of oral cancer. When the La level was analyzed as a categorical variable, a similar U-shaped association was observed. Of note, compared to those with La concentrations of 0.243–0.341 μg/L (reference quantiles, 41st−60th), the risk was increased in those with the lower or higher quantiles (0.132–0.242 μg/L vs. 0.243–0.341 μg/L: OR = 1.80, 95%CI: 1.07–3.02; 0.342–0.497 μg/L vs. 0.243–0.341 μg/L: OR = 2.30, 95%CI: 1.38–3.84). The results were generally consistent with the PSM and IPTW analyses. This preliminary study provides strong evidence that there was a U-shaped relationship between serum La levels and oral cancer risk. Much additional work is warranted to confirm our findings.
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Affiliation(s)
- Fa Chen
- Department of Epidemiology and Health Statistics, School of Public Health, Fujian Medical University, Fuzhou, China
- Key Laboratory of Ministry of Education for Gastrointestinal Cancer, Fujian Medical University, Fuzhou, China
| | - Qingrong Deng
- Department of Epidemiology and Health Statistics, School of Public Health, Fujian Medical University, Fuzhou, China
- Key Laboratory of Ministry of Education for Gastrointestinal Cancer, Fujian Medical University, Fuzhou, China
| | - Yuxuan Wu
- Department of Epidemiology and Health Statistics, School of Public Health, Fujian Medical University, Fuzhou, China
- Key Laboratory of Ministry of Education for Gastrointestinal Cancer, Fujian Medical University, Fuzhou, China
| | - Yuying Wu
- Department of Epidemiology and Health Statistics, School of Public Health, Fujian Medical University, Fuzhou, China
- Key Laboratory of Ministry of Education for Gastrointestinal Cancer, Fujian Medical University, Fuzhou, China
| | - Jinfa Chen
- Laboratory Center, School of Public Health, Fujian Medical University, Fuzhou, China
| | - Yujia Chen
- Department of Epidemiology and Health Statistics, School of Public Health, Fujian Medical University, Fuzhou, China
- Key Laboratory of Ministry of Education for Gastrointestinal Cancer, Fujian Medical University, Fuzhou, China
| | - Lisong Lin
- Department of Oral and Maxillofacial Surgery, The First Affiliated Hospital of Fujian Medical University, Fuzhou, China
| | - Yu Qiu
- Department of Oral and Maxillofacial Surgery, The First Affiliated Hospital of Fujian Medical University, Fuzhou, China
| | - Lizhen Pan
- Department of Oral and Maxillofacial Surgery, The First Affiliated Hospital of Fujian Medical University, Fuzhou, China
| | - Xiaoyan Zheng
- Department of Oral and Maxillofacial Surgery, The First Affiliated Hospital of Fujian Medical University, Fuzhou, China
| | - Lihong Wei
- Department of Oral and Maxillofacial Surgery, The First Affiliated Hospital of Fujian Medical University, Fuzhou, China
| | - Fengqiong Liu
- Department of Epidemiology and Health Statistics, School of Public Health, Fujian Medical University, Fuzhou, China
- Key Laboratory of Ministry of Education for Gastrointestinal Cancer, Fujian Medical University, Fuzhou, China
| | - Baochang He
- Department of Epidemiology and Health Statistics, School of Public Health, Fujian Medical University, Fuzhou, China
- Key Laboratory of Ministry of Education for Gastrointestinal Cancer, Fujian Medical University, Fuzhou, China
- Department of Oral and Maxillofacial Surgery, The First Affiliated Hospital of Fujian Medical University, Fuzhou, China
| | - Jing Wang
- Laboratory Center, School of Public Health, Fujian Medical University, Fuzhou, China
- *Correspondence: Jing Wang
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Microglial Activation Damages Dopaminergic Neurons through MMP-2/-9-Mediated Increase of Blood-Brain Barrier Permeability in a Parkinson's Disease Mouse Model. Int J Mol Sci 2022; 23:ijms23052793. [PMID: 35269933 PMCID: PMC8910886 DOI: 10.3390/ijms23052793] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2022] [Revised: 02/26/2022] [Accepted: 02/28/2022] [Indexed: 02/06/2023] Open
Abstract
Chronic neuroinflammation has been considered to be involved in the progressive dopaminergic neurodegeneration in Parkinson’s disease (PD). However, the mechanisms remain unknown. Accumulating evidence indicated a key role of the blood–brain barrier (BBB) dysfunction in neurological disorders. This study is designed to elucidate whether chronic neuroinflammation damages dopaminergic neurons through BBB dysfunction by using a rotenone-induced mouse PD model. Results showed that rotenone dose-dependently induced nigral dopaminergic neurodegeneration, which was associated with increased Evans blue content and fibrinogen accumulation as well as reduced expressions of zonula occludens-1 (ZO-1), claudin-5 and occludin, three tight junction proteins for maintaining BBB permeability, in mice, indicating BBB disruption. Rotenone also induced nigral microglial activation. Depletion of microglia or inhibition of microglial activation by PLX3397 or minocycline, respectively, greatly attenuated BBB dysfunction in rotenone-lesioned mice. Mechanistic inquiry revealed that microglia-mediated activation of matrix metalloproteinases-2 and 9 (MMP-2/-9) contributed to rotenone-induced BBB disruption and dopaminergic neurodegeneration. Rotenone-induced activation of MMP-2/-9 was significantly attenuated by microglial depletion and inactivation. Furthermore, inhibition of MMP-2/-9 by a wide-range inhibitor, SB-3CT, abrogated elevation of BBB permeability and simultaneously increased tight junctions expression. Finally, we found that microglial depletion and inactivation as well as inhibition of MMP-2/-9 significantly ameliorated rotenone-elicited nigrostriatal dopaminergic neurodegeneration and motor dysfunction in mice. Altogether, our findings suggested that microglial MMP-2/-9 activation-mediated BBB dysfunction contributed to dopaminergic neurodegeneration in rotenone-induced mouse PD model, providing a novel view for the mechanisms of Parkinsonism.
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Sun J, Zhang Y, Yan L, Liu S, Wang W, Zhu Y, Wang W, Li S, He B, Wu L, Zhang L. Action of the Nrf2/ARE signaling pathway on oxidative stress in choroid plexus epithelial cells following lanthanum chloride treatment. J Inorg Biochem 2022; 231:111792. [DOI: 10.1016/j.jinorgbio.2022.111792] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2021] [Revised: 03/05/2022] [Accepted: 03/07/2022] [Indexed: 12/01/2022]
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Liu J, Wang L, Ge L, Sun W, Song Z, Lu X, Jin C, Wu S, Yang J. Lanthanum decreased VAPB-PTPP51, BAP31-FIS1, and MFN2-MFN1 expression of mitochondria-associated membranes and induced abnormal autophagy in rat hippocampus. Food Chem Toxicol 2022; 161:112831. [DOI: 10.1016/j.fct.2022.112831] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2021] [Revised: 01/03/2022] [Accepted: 01/20/2022] [Indexed: 12/21/2022]
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Zhang H, Dong W, Li S, Zhang Y, Lv Z, Yang L, Jiang L, Wu T, Wang Y. Salidroside protects against ventilation-induced lung injury by inhibiting the expression of matrix metalloproteinase-9. PHARMACEUTICAL BIOLOGY 2021; 59:760-768. [PMID: 34517742 PMCID: PMC8439245 DOI: 10.1080/13880209.2021.1967409] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/23/2021] [Revised: 07/29/2021] [Accepted: 08/08/2021] [Indexed: 06/13/2023]
Abstract
CONTEXT Salidroside, a compound extracted from Rhodiola rosea L. (Crassulaceae), possesses many beneficial pathological effects. OBJECTIVE To explore the effect of salidroside on ventilator-induced lung endothelial dysfunction in vivo and in vitro. MATERIALS AND METHODS In vivo, male ICR mice were divided into sham, ventilation, salidroside, and ventilation plus salidroside groups. The mice were ventilated for 4 h, salidroside (50 mg/kg) was administrated intraperitoneally before ventilation, dexamethasone (Dex) (5 mg/kg) was used as a positive control. In vitro, mouse lung vascular endothelial cells (MLVECs) were treated with salidroside, MMP-9 siRNA, and BAY11-7082 (10 μM), and then exposed to cyclic stretch for 4 h. Afterward, lung tissues and MLVECs were collected for further analysis. RESULTS Salidroside pre-treatment significantly reversed the expression of vascular endothelial cadherin (VE-cadherin) and zonula occluden-1 (ZO-1) proteins in cyclic stretch-treated MLVECs (0.46 ± 0.09 vs. 0.80 ± 0.14, 0.49 ± 0.05 vs. 0.88 ± 0.08) and ventilated lung tissues (0.56 ± 0.06 vs. 0.83 ± 0.46, 0.49 ± 0.08 vs. 0.80 ± 0.12). The results further indicated that salidroside inhibited the expression of matrix metalloproteinase-9 (MMP-9), whereas knockdown of its expression restored the expression levels of VE-cadherin (0.37 ± 0.08 vs. 0.85 ± 0.74) and ZO-1 (0.48 ± 0.08 vs. 0.81 ± 0.11) in stretched MLVECs. Meanwhile, salidroside inhibited the NF-κB signalling pathway and alleviated lung injury. CONCLUSIONS Salidroside protected against stretch-induced endothelial barrier function, improving lung injury after ventilation. Thus, salidroside may be a promising therapeutic agent for patients with MV-induced lung injury.
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Affiliation(s)
- Hui Zhang
- Department of Anesthesiology and Surgical Intensive Care Unit, Xinhua Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Wenwen Dong
- Department of Anesthesiology and Surgical Intensive Care Unit, Xinhua Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Siyuan Li
- Department of Anesthesiology and Surgical Intensive Care Unit, Xinhua Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Yunqian Zhang
- Department of Anesthesiology and Surgical Intensive Care Unit, Xinhua Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Zhou Lv
- Department of Anesthesiology and Surgical Intensive Care Unit, Xinhua Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Lu Yang
- The Key Laboratory of Exercise and Health Sciences of Ministry of Education, School of Kinesiology, Shanghai University of Sport, Shanghai, China
| | - Lai Jiang
- Department of Anesthesiology and Surgical Intensive Care Unit, Xinhua Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Tao Wu
- School of Medicine, Shanghai Jiaotong University, Shanghai, China
| | - Yan Wang
- Department of Anesthesiology and Surgical Intensive Care Unit, Xinhua Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
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12
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Han G, Tan Z, Jing H, Ning J, Li Z, Gao S, Li G. Comet Assay Evaluation of Lanthanum Nitrate DNA Damage in C57-ras Transgenic Mice. Biol Trace Elem Res 2021; 199:3728-3736. [PMID: 33403576 DOI: 10.1007/s12011-020-02500-5] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/11/2020] [Accepted: 11/17/2020] [Indexed: 12/24/2022]
Abstract
Due to the wide application of rare-earth elements (REEs) in the last decades, lanthanum has increasingly entered the environment and has gradually accumulated in the human body through the food chain. Lanthanum is worth paying attention in terms of food safety. Although the genotoxicity of lanthanum has been studied in vitro, data on its DNA damage in vivo rodent are limited, moreover, which have also presented some controversy. This study aimed to conduct an in vivo rodent alkaline comet assay, and as a companion test to the lanthanum nitrate carcinogenicity test. We conducted an oral gavage experiment for 180 days (26 weeks) to test for the persistence of DNA damage of long-term low-dose accumulation of lanthanum nitrate (12.5, 25, and 50 mg/kg body weight), in F1 hybrid C57-ras transgenic mice (CB6F1) by using alkaline comet assay in the blood and liver. The comet assay revealed that all the tested concentrations of lanthanum nitrate did not induce DNA damage in any of the tissues investigated, whereas DNA damage was induced in the positive control group. These results could indicate that lanthanum nitrate can accumulate in tissues and organs of the mice after exposure, and does not possess DNA damage in C57-ras transgenic mice after repeated treatments at oral doses up to 50 mg/kg·BW for 26 weeks; also, it did not cause pathological changes in the liver of the mice.
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Affiliation(s)
- Gaochao Han
- Institute of Toxicology, Beijing Center for Disease Prevention and Control/Beijing Research Center for Preventive Medicine/Beijing Key Laboratory of Diagnostic and Traceablity Technologies for Food Poisoning, No. 16, Hepingli Middle Street, Dongcheng District, Beijing, 100013, China
- School of Public Health, Capital Medical University, No. 10, West Toutiao, Youanmenwai, Fengtai District, Beijing, 100069, China
| | - Zhuangsheng Tan
- Institute of Toxicology, Beijing Center for Disease Prevention and Control/Beijing Research Center for Preventive Medicine/Beijing Key Laboratory of Diagnostic and Traceablity Technologies for Food Poisoning, No. 16, Hepingli Middle Street, Dongcheng District, Beijing, 100013, China
| | - Haiming Jing
- Institute of Toxicology, Beijing Center for Disease Prevention and Control/Beijing Research Center for Preventive Medicine/Beijing Key Laboratory of Diagnostic and Traceablity Technologies for Food Poisoning, No. 16, Hepingli Middle Street, Dongcheng District, Beijing, 100013, China
- School of Public Health, Capital Medical University, No. 10, West Toutiao, Youanmenwai, Fengtai District, Beijing, 100069, China
| | - Junyu Ning
- Institute of Toxicology, Beijing Center for Disease Prevention and Control/Beijing Research Center for Preventive Medicine/Beijing Key Laboratory of Diagnostic and Traceablity Technologies for Food Poisoning, No. 16, Hepingli Middle Street, Dongcheng District, Beijing, 100013, China
- School of Public Health, Capital Medical University, No. 10, West Toutiao, Youanmenwai, Fengtai District, Beijing, 100069, China
| | - Zinan Li
- Institute of Toxicology, Beijing Center for Disease Prevention and Control/Beijing Research Center for Preventive Medicine/Beijing Key Laboratory of Diagnostic and Traceablity Technologies for Food Poisoning, No. 16, Hepingli Middle Street, Dongcheng District, Beijing, 100013, China
- School of Public Health, Capital Medical University, No. 10, West Toutiao, Youanmenwai, Fengtai District, Beijing, 100069, China
| | - Shan Gao
- Institute of Toxicology, Beijing Center for Disease Prevention and Control/Beijing Research Center for Preventive Medicine/Beijing Key Laboratory of Diagnostic and Traceablity Technologies for Food Poisoning, No. 16, Hepingli Middle Street, Dongcheng District, Beijing, 100013, China
| | - Guojun Li
- Institute of Toxicology, Beijing Center for Disease Prevention and Control/Beijing Research Center for Preventive Medicine/Beijing Key Laboratory of Diagnostic and Traceablity Technologies for Food Poisoning, No. 16, Hepingli Middle Street, Dongcheng District, Beijing, 100013, China.
- School of Public Health, Capital Medical University, No. 10, West Toutiao, Youanmenwai, Fengtai District, Beijing, 100069, China.
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13
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Malvandi AM, Shahba S, Mohammadipour A, Rastegar-Moghaddam SH, Abudayyak M. Cell and molecular toxicity of lanthanum nanoparticles: are there possible risks to humans? Nanotoxicology 2021; 15:951-972. [PMID: 34143944 DOI: 10.1080/17435390.2021.1940340] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
Lanthanum nanoparticles are widely used in industry, agriculture, and biomedicine. Over 900 kg of lanthanum is annually released into the environment only in Europe, 50 times higher than the metals, mercury, and cadmium's environmental spread. Human health risk associated with long-term exposure to the abundant lanthanum nanoparticles is a concerning environmental issue. Due to lanthanum's ability to disrupt the main biological barriers and interrupt various cells' hemostasis, they seem to cause severe disruptions to various tissues. This review opens a new perspective regarding the cellular and molecular interaction of nanosized and ionic lanthanum with the possible toxicity on the nervous system and other tissues that would show lanthanum nanoparticles' potential danger to follow in toxicological science.
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Affiliation(s)
| | - Sara Shahba
- Medical Biotechnology Research Center, School of Paramedicine, Guilan University of Medical Sciences, Rasht, Iran
| | - Abbas Mohammadipour
- Department of Anatomy and Cell Biology, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | | | - Mahmoud Abudayyak
- Department of Pharmaceutical Toxicology, Faculty of Pharmacy, Istanbul University, Istanbul, Turkey
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14
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Liu H, Liu H, Yang Z, Wang K. Bone Mineral Density in Population Long-Term Exposed to Rare Earth Elements from a Mining Area of China. Biol Trace Elem Res 2021; 199:453-464. [PMID: 32361884 DOI: 10.1007/s12011-020-02165-0] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/09/2020] [Accepted: 04/15/2020] [Indexed: 12/17/2022]
Abstract
This study aims to investigate the effects of individuals' exposure to rare earth elements (REEs) on bone metabolism. Adopting the inductively coupled plasma mass spectrometry, we measured REEs and eight other elements (Ca, Fe, Cu, Na, K, Zn, Mg, and P) in the hair of 53 miners exposed to REEs from Baiyunebo and 57 healthy farmers as the control group. Furthermore, bone mineral density (BMD) in both groups was assessed by dual-energy X-ray absorptiometry. Analysis of variance showed that the concentrations of La, Ce, Pr, Nd, Tb, Ho, Tm, and Yb in male hair of exposed group were significantly higher compared with the control group, whereas the concentrations of Ca and Fe in exposed group were significantly lower; the results of female hair, except for Ce, Tb, Ho, Tm, and Yb, were consistent with male hair. Student's t test showed that the BMD of exposed males at lumbar vertebrae, femoral neck, greater trochanter, and intertrochanter was significantly lower than that of controls, and exposed females reported lower BMD values at lumbar vertebrae and femoral neck. Multiple linear regression analysis showed that concentrations of differential REEs were inversely related to BMD in males, and concentrations of Ca and Fe were positively related to BMD both in males and females. Our study suggests that long-term environmental and occupational exposure leads to REE accumulation, and a low level of iron and calcium due to the competitive binding of REEs, which together induce bone metabolism disorders, and further reduce BMD.
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Affiliation(s)
- Heming Liu
- Department of Orthopaedics, The 1st Affiliated Hospital of Baotou Medical College, Baotou, Inner Mongolia Province, China.
| | - Haiyan Liu
- Department of Intervention Therapy, The 1st Affiliated Hospital of Baotou Medical College, Baotou, Inner Mongolia Province, China
| | - Zenghua Yang
- Department of Orthopaedics, The 1st Affiliated Hospital of Baotou Medical College, Baotou, Inner Mongolia Province, China
| | - Kunzheng Wang
- Department of Orthopaedics, The 2nd Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shannxi Province, China
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15
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Ghasemloo E, Oryan S, Bigdeli MR, Mostafavi H, Eskandari M. The neuroprotective effect of MicroRNA-149-5p and coenzymeQ10 by reducing levels of inflammatory cytokines and metalloproteinases following focal brain ischemia in rats. Brain Res Bull 2021; 169:205-213. [PMID: 33508402 DOI: 10.1016/j.brainresbull.2021.01.013] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2020] [Revised: 01/15/2021] [Accepted: 01/20/2021] [Indexed: 01/28/2023]
Abstract
The increase in some factors following cerebral ischemia, especially Matrix metalloproteinase (MMPs) and inflammatory factors lead to blood-brain barrier (BBB) damages, edema and neuronal death. Previous studies have shown that these molecules are miRNA-149-5p (miR-149) and Coenzyme (Co) Q10 targets. Therefore, in this study, the effect of mimic of miRNA-149-5p (mimic miR) and CoQ10 on the expression of metalloproteinase 1 and 2 and inflammatory cytokines following injury caused by cerebral ischemia is investigated. Cerebral ischemia was modeled by Middle Cerebral Artery Occlusion (MCAO). Male Wistar rats were randomly divided into 6 groups: sham (without surgery and treatment), control (MCAO), negative control (NC): MCAO + scrambled miR, vehicle: MCAO + Ethanole, first treatment: MCAO + mimic miR, second treatment: MCAO + Q10. Each group was divided into 6 subgroups to evaluate neurological defects, the volume of tissue damage using 2,3,5-triphenyl tetrazolium chloride (TTC) staining, blood-brain barrier permeability using cerebral Evans Blue (EB) staining, edema by measuring the percentage of brain water, MMP-2,9 mRNA and miR-149-5p levels using Quantitative Real-Time Polymerase Chain Reaction (qRT-PCR) and the levels of IL-6 and TNF-α proteins using ELISA. The data obtained from this study showed that the use of mimic miR and Q10 increased the level of miR-149, decreased the extent of neurological defects and tissue damage, increased BBB integrity, decreased brain water percentage and also decreased the level of inflammatory cytokines and MMPs. It seems that the use mimic of miRNA-149-5p and Q10 can have a protective effect on the brain by reducing MMPs and inflammatory factors following cerebral ischemia and this could lead to a new treatment strategy to reduce the complications of cerebral ischemia.
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Affiliation(s)
- Elham Ghasemloo
- Faculty of Life Sciences, Kharazmi University, Tehran, Iran.
| | | | - Mohammad Reza Bigdeli
- Faculty of Life Sciences and Biotechnology, Shahid Beheshti University, Tehran, Iran
| | - Hossein Mostafavi
- Department of Physiology, School of Medicine, Zanjan University of Medical Sciences, Zanjan, Iran
| | - Mehdi Eskandari
- Department of Physiology, School of Medicine, Zanjan University of Medical Sciences, Zanjan, Iran
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16
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Xiao X, Yong L, Jiao B, Yang H, Liang C, Jia X, Liu Z, Sang Y, Song Y. Postweaning exposure to lanthanum alters neurological behavior during early adulthood in rats. Neurotoxicology 2020; 83:40-50. [PMID: 33359004 DOI: 10.1016/j.neuro.2020.12.012] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2020] [Revised: 12/07/2020] [Accepted: 12/20/2020] [Indexed: 01/10/2023]
Abstract
Lanthanum is a rare-earth element that has been used in various fields including medicine, agriculture and industry. Previously, in utero lanthanum exposure to dams was shown to alter neurobehavior and neurotransmitter levels in rat offspring; however, the effects of postweaning exposure to lanthanum on neurological behavior is still limited. The purpose of this study was to investigate the effects of postweaning exposure to lanthanum on neurological behavior during early adulthood in rats. Rats were orally exposed to 0, 2, 20, 60 mg/kg BW of lanthanum nitrate from postnatal day (PND) 24 to PND60. Our results indicated that lanthanum treatment significantly decreased body weight and food intake. Morris water maze test results showed that lanthanum significantly decreased escape latency and travel distance. Lanthanum treatment also significantly decreased grip strength, hindlimb strength, and running time & distance in motor activity test. Further results showed that lanthanum treatment significantly decreased plasma neurotransmitter levels of acetylcholine and norepinephrine as well as the number of neurons in the CA1 area of the hippocampus. These results suggest that postweaning exposure to lanthanum have adverse effects on neurobehaviors and the central nervous system, with no-observed-adverse-effect level at 2 mg/kg BW and benchmark dose lower confidence limit at 1.7 mg/kg BW.
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Affiliation(s)
- Xiao Xiao
- Key Laboratory of Food Safety Risk Assessment, National Health Commission of the People's Republic of China (China National Center for Food Safety Risk Assessment), Beijing, 100022, China
| | - Ling Yong
- Key Laboratory of Food Safety Risk Assessment, National Health Commission of the People's Republic of China (China National Center for Food Safety Risk Assessment), Beijing, 100022, China
| | - Bingqing Jiao
- College of Food Science and Technology, Hebei Agricultural University, Baoding, Hebei, 071001, China
| | - Hui Yang
- Key Laboratory of Food Safety Risk Assessment, National Health Commission of the People's Republic of China (China National Center for Food Safety Risk Assessment), Beijing, 100022, China
| | - Chunlai Liang
- Key Laboratory of Food Safety Risk Assessment, National Health Commission of the People's Republic of China (China National Center for Food Safety Risk Assessment), Beijing, 100022, China
| | - Xudong Jia
- Key Laboratory of Food Safety Risk Assessment, National Health Commission of the People's Republic of China (China National Center for Food Safety Risk Assessment), Beijing, 100022, China
| | - Zhaoping Liu
- Key Laboratory of Food Safety Risk Assessment, National Health Commission of the People's Republic of China (China National Center for Food Safety Risk Assessment), Beijing, 100022, China
| | - Yaxin Sang
- College of Food Science and Technology, Hebei Agricultural University, Baoding, Hebei, 071001, China
| | - Yan Song
- Key Laboratory of Food Safety Risk Assessment, National Health Commission of the People's Republic of China (China National Center for Food Safety Risk Assessment), Beijing, 100022, China.
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17
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Hoffman JF, Kalinich JF. Effects of Incubation of Human Brain Microvascular Endothelial Cells and Astrocytes with Pyridostigmine Bromide, DEET, or Permethrin in the Absence or Presence of Metal Salts. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2020; 17:ijerph17228336. [PMID: 33187257 PMCID: PMC7696739 DOI: 10.3390/ijerph17228336] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/01/2020] [Revised: 11/05/2020] [Accepted: 11/09/2020] [Indexed: 12/19/2022]
Abstract
Gulf War Illness (GWI) is a chronic, multi-symptom illness suffered by over one-third of American military veterans who served in the Persian Gulf War between 1990 and 1991. No current single-exposure scenario accounts for all the symptoms observed in GWI, and instead may be due to a multi-exposure scenario. As a larger effort to understand how one category of multi-exposure scenarios of organic compounds such as nerve gas prophylactic pyridostigmine bromide, or insecticides/pesticides such as N,N-diethyl-m-toluamide (DEET) and permethrin, plus heavy metals found in inhaled dust particles (Al, Fe, Ni, Sr, DU, Co, Cu, Mn, and Zn) might play a role in neural aspects of GWI, we begin this initial study to examine the toxicity and oxidative damage markers of human brain endothelial cell and human astrocyte cell cultures in response to these compounds. A battery of cytotoxicity assessments, including the MTT assay, Neutral Red uptake, and direct microscopic observation, was used to determine a non-toxic dose of the test compounds. After testing a wide range of doses of each compound, we chose a sub-toxic dose of 10 µM for the three organic compounds and 1 µM for the nine metals of interest for co-exposure experiments on cell cultures and examined an array of oxidative stress-response markers including nitric oxide production, formation of protein carbonyls, production of thiobarbituric acid-reactive substances, and expression of proteins involved in oxidative stress and cell damage. Many markers were not significantly altered, but we report a significant increase in nitric oxide after exposure to any of the three compounds in conjunction with depleted uranium.
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18
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Wu J, Yang J, Yu M, Sun W, Han Y, Lu X, Jin C, Wu S, Cai Y. Lanthanum chloride causes blood–brain barrier disruption through intracellular calcium-mediated RhoA/Rho kinase signaling and myosin light chain kinase. Metallomics 2020; 12:2075-2083. [DOI: 10.1039/d0mt00187b] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Lanthanum caused endothelial barrier hyperpermeability, loss of VE-cadherin and rearrangement of the actin cytoskeleton, though intracellular Ca2+-mediated RhoA/ROCK and MLCK pathways.
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Affiliation(s)
- Jie Wu
- Department of Occupational and Environmental Health
- School of Public Health
- Jinzhou Medical University
- Jinzhou 121001
- P. R. China
| | - Jinghua Yang
- Department of Hygiene Toxicology
- School of Public Health
- China Medical University
- Shenyang 110122
- P. R. China
| | - Miao Yu
- Department of Hygiene Toxicology
- School of Public Health
- China Medical University
- Shenyang 110122
- P. R. China
| | - Wenchang Sun
- Department of Hygiene Toxicology
- School of Public Health
- China Medical University
- Shenyang 110122
- P. R. China
| | - Yarao Han
- Department of Hygiene Toxicology
- School of Public Health
- China Medical University
- Shenyang 110122
- P. R. China
| | - Xiaobo Lu
- Department of Hygiene Toxicology
- School of Public Health
- China Medical University
- Shenyang 110122
- P. R. China
| | - Cuihong Jin
- Department of Hygiene Toxicology
- School of Public Health
- China Medical University
- Shenyang 110122
- P. R. China
| | - Shengwen Wu
- Department of Hygiene Toxicology
- School of Public Health
- China Medical University
- Shenyang 110122
- P. R. China
| | - Yuan Cai
- Department of Hygiene Toxicology
- School of Public Health
- China Medical University
- Shenyang 110122
- P. R. China
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19
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Yu M, Yang J, Gao X, Sun W, Liu S, Han Y, Lu X, Jin C, Wu S, Cai Y. Lanthanum chloride impairs spatial learning and memory by inducing [Ca2+]m overload, mitochondrial fission–fusion disorder and excessive mitophagy in hippocampal nerve cells of rats. Metallomics 2020; 12:592-606. [DOI: 10.1039/c9mt00291j] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Lanthanum chloride damages hippocampal nerve cells of rats through inducing [Ca2+]m overload, mitochondrial fission–fusion disorder, and excessive mitophagy.
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20
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Xiao X, Yong L, Liu D, Yang H, Liang C, Jia X, Liu Z, Song Y. Effects of in utero exposure to lanthanum on neurological behavior in rat offspring. Neurotoxicol Teratol 2019; 77:106854. [PMID: 31891752 DOI: 10.1016/j.ntt.2019.106854] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2019] [Revised: 12/13/2019] [Accepted: 12/23/2019] [Indexed: 10/25/2022]
Abstract
The increasing use of rare-earth elements in various fields has raised concern from public heath perspective regarding their accumulation in human body. Long-term exposure to lanthanum, one of the frequently used rare-earth elements in biomedicine and agriculture, has been previously shown to exert neurotoxicity during development in rats; however, the effects of short-term exposure to lanthanum during gestation on neurobehavioral development in rat offspring is still not clear. The purpose of this study is to investigate the effects of intrauterine exposure to lanthanum on neurobehavioral development in rat offspring. Dams were orally exposed to 0, 2, 20, & 60 mg/kg BW of lanthanum nitrate from gestation day 7 to day 16. Morris water maze test, hindlimb strength test, nociceptive perception test, and grip strength test were conducted during postnatal day 61 to 66 in rat offspring. Blood lanthanum concentration and plasma neurotransmitters were measured after sacrifice. The results showed that intrauterine exposure to lanthanum nitrate significantly impaired memory and spatial learning in Morris water maze test. Lanthanum treatment dose-dependently increased blood lanthanum concentration in dams and pups. Lanthanum treatment significantly decreased hindlimb and grip strength and increased delay time in nociceptive response. Plasma neurotransmitter results showed that lanthanum treatment significantly decreased the level of acetylcholine and serotonin while increased the level of glutamate in rat offspring. These results suggest that short-term in utero exposure to lanthanum has potential adverse effects on neurodevelopment in rat offspring.
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Affiliation(s)
- Xiao Xiao
- Key Laboratory of Food Safety Risk Assessment, National Health Commission of the People's Republic of China (China National Center for Food Safety Risk Assessment), Beijing, 100022, China
| | - Ling Yong
- Key Laboratory of Food Safety Risk Assessment, National Health Commission of the People's Republic of China (China National Center for Food Safety Risk Assessment), Beijing, 100022, China
| | - Dandan Liu
- Beijing Mentougou Center for Disease Control and Prevention, Beijing, 102300, China
| | - Hui Yang
- Key Laboratory of Food Safety Risk Assessment, National Health Commission of the People's Republic of China (China National Center for Food Safety Risk Assessment), Beijing, 100022, China
| | - Chunlai Liang
- Key Laboratory of Food Safety Risk Assessment, National Health Commission of the People's Republic of China (China National Center for Food Safety Risk Assessment), Beijing, 100022, China
| | - Xudong Jia
- Key Laboratory of Food Safety Risk Assessment, National Health Commission of the People's Republic of China (China National Center for Food Safety Risk Assessment), Beijing, 100022, China
| | - Zhaoping Liu
- Key Laboratory of Food Safety Risk Assessment, National Health Commission of the People's Republic of China (China National Center for Food Safety Risk Assessment), Beijing, 100022, China
| | - Yan Song
- Key Laboratory of Food Safety Risk Assessment, National Health Commission of the People's Republic of China (China National Center for Food Safety Risk Assessment), Beijing, 100022, China.
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21
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Wang J, Chen Y, Zhang C, Xiang Z, Ding J, Han X. Learning and memory deficits and alzheimer's disease-like changes in mice after chronic exposure to microcystin-LR. JOURNAL OF HAZARDOUS MATERIALS 2019; 373:504-518. [PMID: 30947040 DOI: 10.1016/j.jhazmat.2019.03.106] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/03/2018] [Revised: 03/18/2019] [Accepted: 03/23/2019] [Indexed: 06/09/2023]
Abstract
Previous studies have demonstrated that toxins produced by toxic cyanobacterial blooms are hazardous materials. Although microcystin-LR (MC-LR) has been revealed to inflict damage to the brain, the mechanisms underlying its neurotoxicity as a result of chronic exposure to MC-LR are not fully described. In this study, the mice were exposed to MC-LR dissolved in drinking water at doses of 1, 7.5, 15, or 30 μg/L for 180 days. MC-LR accumulated mostly in the mouse hippocampus (55 ng/g dry weight) followed by cortex (28 ng/g dry weight) after exposure to MC-LR at 30 μg/L. MC-LR exposure at this concentration induced dysfunction of learning and memory, accompanied with apoptosis of neuronal cells (with 10% reduction of the neurons in the CA1 region and 15% in the CA2 region), reduction of spine density, accumulation of β-amyloid plaques 1-42 (Aβ1-42), and enhanced phosphorylation of tau (p-tau) in the brain, which is characteristic of Alzheimer's disease (AD). These data indicate that MC-LR may induce AD-like pathology. Following prolonged exposure, MC-LR significantly upregulated the ratio of proBDNF to BDNF by downregulating the tPA levels, thereby activating downstream signaling pathways to improve the expression of p-JNK, and c-Jun while to inhibit the expression of p-Creb and p-PKC. This study uncovered new molecular mechanisms that account for neurotoxicity after chronic exposure to MC-LR, which has wide-ranging implications for public health.
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Affiliation(s)
- Jing Wang
- Immunology and Reproduction Biology Laboratory & State Key Laboratory of Analytical Chemistry for Life Science, Medical School, Nanjing University, Nanjing 210093, China; Jiangsu Key Laboratory of Molecular Medicine, Nanjing University, Nanjing 210093, China
| | - Yabing Chen
- Immunology and Reproduction Biology Laboratory & State Key Laboratory of Analytical Chemistry for Life Science, Medical School, Nanjing University, Nanjing 210093, China; Jiangsu Key Laboratory of Molecular Medicine, Nanjing University, Nanjing 210093, China
| | - Changliang Zhang
- Immunology and Reproduction Biology Laboratory & State Key Laboratory of Analytical Chemistry for Life Science, Medical School, Nanjing University, Nanjing 210093, China; Jiangsu Key Laboratory of Molecular Medicine, Nanjing University, Nanjing 210093, China
| | - Zou Xiang
- Department of Health Technology and Informatics, Faculty of Health and Social Sciences, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, China
| | - Jie Ding
- Immunology and Reproduction Biology Laboratory & State Key Laboratory of Analytical Chemistry for Life Science, Medical School, Nanjing University, Nanjing 210093, China; Jiangsu Key Laboratory of Molecular Medicine, Nanjing University, Nanjing 210093, China.
| | - Xiaodong Han
- Immunology and Reproduction Biology Laboratory & State Key Laboratory of Analytical Chemistry for Life Science, Medical School, Nanjing University, Nanjing 210093, China; Jiangsu Key Laboratory of Molecular Medicine, Nanjing University, Nanjing 210093, China.
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