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Tian L, Zhang Y, Chen J, Liu X, Nie H, Li K, Liu H, Lai W, Shi Y, Xi Z, Lin B. Effects of nanoplastic exposure during pregnancy and lactation on neurodevelopment of rat offspring. JOURNAL OF HAZARDOUS MATERIALS 2024; 474:134800. [PMID: 38850955 DOI: 10.1016/j.jhazmat.2024.134800] [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: 12/25/2023] [Revised: 05/25/2024] [Accepted: 06/01/2024] [Indexed: 06/10/2024]
Abstract
Microplastics have emerged as a prominent global environmental contaminant, and they have been found in both human placenta and breast milk. However, the potential effects and mechanisms of maternal exposure to microplastics at various gestational stages on offspring neurodevelopment remain poorly understood. This investigation delves into the potential neurodevelopmental ramifications of maternal exposure to polystyrene nanoplastics (PS-NPs) during distinct phases of pregnancy and lactation. Targeted metabolomics shows that co-exposure during both pregnancy and lactation primarily engendered alterations in monoamine neurotransmitters within the cortex and amino acid neurotransmitters within the hippocampus. After prenatal exposure to PS-NPs, fetal rats showed appreciably diminished cortical thickness and heightened cortical cell proliferation. However, this exposure did not affect the neurodifferentiation of radial glial cells and intermediate progenitor cells. In addition, offspring are accompanied by disordered neocortical migration, typified by escalated superficial layer neurons proliferation and reduced deep layer neurons populations. Moreover, the hippocampal synapses showed significantly widened synaptic clefts and diminished postsynaptic density. Consequently, PS-NPs culminated in deficits in anxiolytic-like behaviors and spatial memory in adolescent offspring, aligning with concurrent neurotransmitter and synaptic alterations. In conclusion, this study elucidates the sensitive windows of early-life nanoplastic exposure and the consequential impact on offspring neurodevelopment.
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Affiliation(s)
- Lei Tian
- Tianjin Institute of Environmental and Operational Medicine, Tianjin 300050, China
| | - Yaping Zhang
- Tianjin Institute of Environmental and Operational Medicine, Tianjin 300050, China; School of Public Health and Management, Binzhou Medical University, Yantai 264003, China
| | - Jiang Chen
- Tianjin Institute of Environmental and Operational Medicine, Tianjin 300050, China; School of Public Health, North China University of Science and Technology, Tangshan 063200, China
| | - Xuan Liu
- Tianjin Institute of Environmental and Operational Medicine, Tianjin 300050, China
| | - Huipeng Nie
- Tianjin Institute of Environmental and Operational Medicine, Tianjin 300050, China
| | - Kang Li
- Tianjin Institute of Environmental and Operational Medicine, Tianjin 300050, China
| | - Huanliang Liu
- Tianjin Institute of Environmental and Operational Medicine, Tianjin 300050, China
| | - Wenqing Lai
- Tianjin Institute of Environmental and Operational Medicine, Tianjin 300050, China
| | - Yue Shi
- Tianjin Institute of Environmental and Operational Medicine, Tianjin 300050, China
| | - Zhuge Xi
- Tianjin Institute of Environmental and Operational Medicine, Tianjin 300050, China.
| | - Bencheng Lin
- Tianjin Institute of Environmental and Operational Medicine, Tianjin 300050, China.
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Wei N, Zhang LM, Xu JJ, Li SL, Xue R, Ma SL, Li C, Sun MM, Chen KS. Astaxanthin Rescues Memory Impairments in Rats with Vascular Dementia by Protecting Against Neuronal Death in the Hippocampus. Neuromolecular Med 2024; 26:29. [PMID: 39014255 DOI: 10.1007/s12017-024-08796-z] [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: 05/29/2024] [Accepted: 06/25/2024] [Indexed: 07/18/2024]
Abstract
Vascular dementia (VaD) is a cognitive disorder characterized by a decline in cognitive function resulting from cerebrovascular disease. The hippocampus is particularly susceptible to ischemic insults, leading to memory deficits in VaD. Astaxanthin (AST) has shown potential therapeutic effects in neurodegenerative diseases. However, the mechanisms underlying its protective effects in VaD and against hippocampal neuronal death remain unclear. In this study, We used the bilateral common carotid artery occlusion (BCCAO) method to establish a chronic cerebral hypoperfusion (CCH) rat model of VaD and administered a gastric infusion of AST at 25 mg/kg per day for 4 weeks to explore its therapeutic effects. Memory impairments were assessed using Y-maze and Morris water maze tests. We also performed biochemical analyses to evaluate levels of hippocampal neuronal death and apoptosis-related proteins, as well as the impact of astaxanthin on the PI3K/Akt/mTOR pathway and oxidative stress. Our results demonstrated that AST significantly rescued memory impairments in VaD rats. Furthermore, astaxanthin treatment protected against hippocampal neuronal death and attenuated apoptosis. We also observed that AST modulated the PI3K/Akt/mTOR pathway, suggesting its involvement in promoting neuronal survival and synaptic plasticity. Additionally, AST exhibited antioxidant properties, mitigating oxidative stress in the hippocampus. These findings provide valuable insights into the potential therapeutic effects of AST in VaD. By elucidating the mechanisms underlying the actions of AST, this study highlights the importance of protecting hippocampal neurons and suggests potential targets for intervention in VaD. There are still some unanswered questions include long-term effects and optimal dosage of the use in human. Further research is warranted to fully understand the therapeutic potential of AST and its application in the clinical treatment of VaD.
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Affiliation(s)
- Na Wei
- Department of Pathology, The First Affiliated Hospital of Zhengzhou University, No.1 Jian She Dong Avenue, Zhengzhou, 450002, People's Republic of China.
- Henan Key Laboratory of Tumor Pathology, No.1 Jian She Dong Avenue, Zhengzhou, 450002, People's Republic of China.
- Department of Pathology, School of Basic Medicine, Zhengzhou University, No.100 Ke Xue Avenue, Zhengzhou, 450002, People's Republic of China.
| | - Luo-Man Zhang
- Department of Pathology, The First Affiliated Hospital of Zhengzhou University, No.1 Jian She Dong Avenue, Zhengzhou, 450002, People's Republic of China
- Henan Key Laboratory of Tumor Pathology, No.1 Jian She Dong Avenue, Zhengzhou, 450002, People's Republic of China
- Department of Pathology, School of Basic Medicine, Zhengzhou University, No.100 Ke Xue Avenue, Zhengzhou, 450002, People's Republic of China
| | - Jing-Jing Xu
- Department of Pathology, The First Affiliated Hospital of Zhengzhou University, No.1 Jian She Dong Avenue, Zhengzhou, 450002, People's Republic of China
- Henan Key Laboratory of Tumor Pathology, No.1 Jian She Dong Avenue, Zhengzhou, 450002, People's Republic of China
- Department of Pathology, School of Basic Medicine, Zhengzhou University, No.100 Ke Xue Avenue, Zhengzhou, 450002, People's Republic of China
| | - Sheng-Lei Li
- Department of Pathology, The First Affiliated Hospital of Zhengzhou University, No.1 Jian She Dong Avenue, Zhengzhou, 450002, People's Republic of China
- Henan Key Laboratory of Tumor Pathology, No.1 Jian She Dong Avenue, Zhengzhou, 450002, People's Republic of China
- Department of Pathology, School of Basic Medicine, Zhengzhou University, No.100 Ke Xue Avenue, Zhengzhou, 450002, People's Republic of China
| | - Rui Xue
- Medical Research Center, The First Affiliated Hospital of Zhengzhou University, No.1 Jian She Dong Avenue, Zhengzhou, 450002, People's Republic of China
| | - Sheng-Li Ma
- Department of Emergency, The First Affiliated Hospital of Zhengzhou University, No.1 Jian She Dong Avenue, Zhengzhou, 450002, People's Republic of China
| | - Cai Li
- Department of Pharmacy, The First Affiliated Hospital of Zhengzhou University, No.1 Jianshe Dong Road, Zhengzhou, 450002, People's Republic of China
| | - Miao-Miao Sun
- Department of Pathology, The First Affiliated Hospital of Zhengzhou University, No.1 Jian She Dong Avenue, Zhengzhou, 450002, People's Republic of China
- Henan Key Laboratory of Tumor Pathology, No.1 Jian She Dong Avenue, Zhengzhou, 450002, People's Republic of China
- Department of Pathology, School of Basic Medicine, Zhengzhou University, No.100 Ke Xue Avenue, Zhengzhou, 450002, People's Republic of China
| | - Kui-Sheng Chen
- Department of Pathology, The First Affiliated Hospital of Zhengzhou University, No.1 Jian She Dong Avenue, Zhengzhou, 450002, People's Republic of China
- Henan Key Laboratory of Tumor Pathology, No.1 Jian She Dong Avenue, Zhengzhou, 450002, People's Republic of China
- Department of Pathology, School of Basic Medicine, Zhengzhou University, No.100 Ke Xue Avenue, Zhengzhou, 450002, People's Republic of China
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Citro S, Lazzaro GD, Cimmino AT, Giuffrè GM, Marra C, Calabresi P. A multiple hits hypothesis for memory dysfunction in Parkinson disease. Nat Rev Neurol 2024; 20:50-61. [PMID: 38052985 DOI: 10.1038/s41582-023-00905-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/09/2023] [Indexed: 12/07/2023]
Abstract
Cognitive disorders are increasingly recognized in Parkinson disease (PD), even in early disease stages, and memory is one of the most affected cognitive domains. Classically, hippocampal cholinergic system dysfunction was associated with memory disorders, whereas nigrostriatal dopaminergic system impairment was considered responsible for executive deficits. Evidence from PD studies now supports involvement of the amygdala, which modulates emotional attribution to experiences. Here, we propose a tripartite model including the hippocampus, striatum and amygdala as key structures for cognitive disorders in PD. First, the anatomo-functional relationships of these structures are explored and experimental evidence supporting their role in cognitive dysfunction in PD is summarized. We then discuss the potential role of α-synuclein, a pathological hallmark of PD, in the tripartite memory system as a key mechanism in the pathogenesis of memory disorders in the disease.
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Affiliation(s)
- Salvatore Citro
- Neurology Section, Department of Neuroscience, Università Cattolica del Sacro Cuore, Rome, Italy
| | - Giulia Di Lazzaro
- Neurology Unit, Fondazione Policlinico Universitario Agostino Gemelli IRCCS, Rome, Italy
| | - Angelo Tiziano Cimmino
- Neurology Section, Department of Neuroscience, Università Cattolica del Sacro Cuore, Rome, Italy
| | - Guido Maria Giuffrè
- Neurology Section, Department of Neuroscience, Università Cattolica del Sacro Cuore, Rome, Italy
- Neurology Unit, Fondazione Policlinico Universitario Agostino Gemelli IRCCS, Rome, Italy
| | - Camillo Marra
- Neurology Section, Department of Neuroscience, Università Cattolica del Sacro Cuore, Rome, Italy
- Neurology Unit, Fondazione Policlinico Universitario Agostino Gemelli IRCCS, Rome, Italy
| | - Paolo Calabresi
- Neurology Section, Department of Neuroscience, Università Cattolica del Sacro Cuore, Rome, Italy.
- Neurology Unit, Fondazione Policlinico Universitario Agostino Gemelli IRCCS, Rome, Italy.
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