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Long J, Li X, Yao C, Liu X, Li N, Zhou Y, Li D, Su S, Wang L, Liu H, Xiang Y, Yi L, Tan Y, Luo P, Cai T. The role of ZC3H12D-regulated TLR4-NF-κB pathway in LPS-induced pro-inflammatory microglial activation. Neurosci Lett 2024; 832:137800. [PMID: 38697601 DOI: 10.1016/j.neulet.2024.137800] [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: 02/20/2024] [Revised: 04/15/2024] [Accepted: 04/26/2024] [Indexed: 05/05/2024]
Abstract
Lipopolysaccharide (LPS) is an important neurotoxin that can cause inflammatory activation of microglia. ZC3H12D is a novel immunomodulator, which plays a remarkable role in neurological pathologies. It has not been characterized whether ZC3H12D is involved in the regulation of microglial activation. The aim of this study was to investigate the role of ZC3H12D in LPS-induced pro-inflammatory microglial activation and its potential mechanism. To elucidate this, we established animal models of inflammatory injury by intraperitoneal injection of LPS (10 mg/kg). The results of the open-field test showed that LPS caused impaired motor function in mice. Meanwhile, LPS caused pro-inflammatory activation of microglia in the mice cerebral cortex and inhibited the expression of ZC3H12D. We also constructed in vitro inflammatory injury models by treating BV-2 microglia with LPS (0.5 μg/mL). The results showed that down-regulated ZC3H12D expression was associated with LPS-induced pro-inflammatory microglial activation, and further intervention of ZC3H12D expression could inhibited LPS-induced pro-inflammatory activation of microglia. In addition, LPS activated the TLR4-NF-κB signaling pathway, and this process can also be reversed by promoting ZC3H12D expression. At the same time, the addition of resveratrol, a nutrient previously proven to inhibit pro-inflammatory microglial activation, can also reverse this process by increasing the expression of ZC3H12D. Summarized, our data elucidated that ZC3H12D in LPS-induced pro-inflammatory activation of brain microglia via restraining the TLR4-NF-κB pathway. This study may provide a valuable clue for potential therapeutic targets for neuroinflammation-related injuries.
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Affiliation(s)
- Jinyun Long
- School of Public Health, the key Laboratory of Environmental Pollution Monitoring and Disease Control, Ministry of Education, Guizhou Medical University, Guiyang 561113, China; Department of Epidemiology, College of Preventive Medicine, State Key Laboratory of Trauma and Chemical Poisoning, Army Medical University (Third Military Medical University), Chongqing 400038, China
| | - Xiukuan Li
- School of Public Health, the key Laboratory of Environmental Pollution Monitoring and Disease Control, Ministry of Education, Guizhou Medical University, Guiyang 561113, China; Department of Epidemiology, College of Preventive Medicine, State Key Laboratory of Trauma and Chemical Poisoning, Army Medical University (Third Military Medical University), Chongqing 400038, China
| | - Chunyan Yao
- Department of Epidemiology, College of Preventive Medicine, State Key Laboratory of Trauma and Chemical Poisoning, Army Medical University (Third Military Medical University), Chongqing 400038, China
| | - Xiaoling Liu
- Department of Epidemiology, College of Preventive Medicine, State Key Laboratory of Trauma and Chemical Poisoning, Army Medical University (Third Military Medical University), Chongqing 400038, China
| | - Na Li
- Chongqing Yongchuan District Center for Disease Control and Prevention, Chongqing, China 402160
| | - Yumeng Zhou
- Department of Epidemiology, College of Preventive Medicine, State Key Laboratory of Trauma and Chemical Poisoning, Army Medical University (Third Military Medical University), Chongqing 400038, China
| | - Dawei Li
- Department of Epidemiology, College of Preventive Medicine, State Key Laboratory of Trauma and Chemical Poisoning, Army Medical University (Third Military Medical University), Chongqing 400038, China
| | - Shengquan Su
- School of Public Health, the key Laboratory of Environmental Pollution Monitoring and Disease Control, Ministry of Education, Guizhou Medical University, Guiyang 561113, China; Department of Epidemiology, College of Preventive Medicine, State Key Laboratory of Trauma and Chemical Poisoning, Army Medical University (Third Military Medical University), Chongqing 400038, China
| | - Liangmei Wang
- School of Public Health, the key Laboratory of Environmental Pollution Monitoring and Disease Control, Ministry of Education, Guizhou Medical University, Guiyang 561113, China; Department of Epidemiology, College of Preventive Medicine, State Key Laboratory of Trauma and Chemical Poisoning, Army Medical University (Third Military Medical University), Chongqing 400038, China
| | - Hao Liu
- Department of Epidemiology, College of Preventive Medicine, State Key Laboratory of Trauma and Chemical Poisoning, Army Medical University (Third Military Medical University), Chongqing 400038, China
| | - Ying Xiang
- Department of Epidemiology, College of Preventive Medicine, State Key Laboratory of Trauma and Chemical Poisoning, Army Medical University (Third Military Medical University), Chongqing 400038, China
| | - Long Yi
- Research Center for Nutrition and Food Safety, Institute of Military Preventive Medicine, Army Medical University (Third Military Medical University), Chongqing 400038, China
| | - Yao Tan
- Department of Environmental Health, College of Preventive Medicine, Army Medical University (Third Military Medical University), Chongqing 400038, China
| | - Peng Luo
- School of Public Health, the key Laboratory of Environmental Pollution Monitoring and Disease Control, Ministry of Education, Guizhou Medical University, Guiyang 561113, China.
| | - Tongjian Cai
- School of Public Health, the key Laboratory of Environmental Pollution Monitoring and Disease Control, Ministry of Education, Guizhou Medical University, Guiyang 561113, China; Department of Epidemiology, College of Preventive Medicine, State Key Laboratory of Trauma and Chemical Poisoning, Army Medical University (Third Military Medical University), Chongqing 400038, China.
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Deng X, Guo Y, Jin X, Si H, Dai K, Deng M, He J, Hao C, Yao W. Manganese accumulation in red blood cells as a biomarker of manganese exposure and neurotoxicity. Neurotoxicology 2024; 102:1-11. [PMID: 38461971 DOI: 10.1016/j.neuro.2024.03.003] [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: 01/05/2024] [Revised: 02/29/2024] [Accepted: 03/08/2024] [Indexed: 03/12/2024]
Abstract
Although overexposure to manganese (Mn) is known to cause neurotoxic damage, effective exposure markers for assessing Mn loading in Mn-exposed workers are lacking. Here, we construct a Mn-exposed rat model to perform correlation analysis between Mn-induced neurological damage and Mn levels in various biological samples. We combine this analysis with epidemiological investigation to assess whether Mn concentrations in red blood cells (MnRBCs) and urine (MnU) can be used as valid exposure markers. The results show that Mn exposure resulted in neurotoxic damage in rats and that MnRBCs correlated well with neurological damage, showing potential as a novel Mn exposure biomarker. These findings provide a basis for health monitoring of Mn-exposed workers and the development of more appropriate biological exposure limits.
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Affiliation(s)
- Xuedan Deng
- Department of Occupational Health and Environmental Health, College of Public Health, Zhengzhou University, Zhengzhou, Henan 450001, China
| | - Yonghua Guo
- Department of Occupational Health and Environmental Health, College of Public Health, Zhengzhou University, Zhengzhou, Henan 450001, China
| | - Xiaofei Jin
- Department of Ultrasound, The Third Affiliated Hospital of Zhengzhou University, Zhengzhou University, Zhengzhou, Henan 450001, China
| | - Huifang Si
- Department of Occupational Health and Environmental Health, College of Public Health, Zhengzhou University, Zhengzhou, Henan 450001, China
| | - Kai Dai
- Department of Occupational Health and Environmental Health, College of Public Health, Zhengzhou University, Zhengzhou, Henan 450001, China
| | - Meng Deng
- Department of Occupational Health and Environmental Health, College of Public Health, Zhengzhou University, Zhengzhou, Henan 450001, China
| | - Jing He
- Department of Occupational Health and Environmental Health, College of Public Health, Zhengzhou University, Zhengzhou, Henan 450001, China
| | - Changfu Hao
- Department of Child and Adolescence Health, College of Public Health, Zhengzhou University, Zhengzhou, Henan 450001, China.
| | - Wu Yao
- Department of Occupational Health and Environmental Health, College of Public Health, Zhengzhou University, Zhengzhou, Henan 450001, China.
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Fathima A, Bagang N, Kumar N, Dastidar SG, Shenoy S. Role of SIRT1 in Potentially Toxic Trace Elements (Lead, Fluoride, Aluminum and Cadmium) Associated Neurodevelopmental Toxicity. Biol Trace Elem Res 2024:10.1007/s12011-024-04116-5. [PMID: 38416341 DOI: 10.1007/s12011-024-04116-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/30/2023] [Accepted: 02/17/2024] [Indexed: 02/29/2024]
Abstract
The formation of the central nervous system is a meticulously planned and intricate process. Any modification to this process has the potential to disrupt the structure and operation of the brain, which could result in deficiencies in neurological growth. When neurotoxic substances are present during the early stages of development, they can be exceptionally dangerous. Prenatally, the immature brain is extremely vulnerable and is therefore at high risk in pregnant women associated with occupational exposures. Lead, fluoride, aluminum, and cadmium are examples of possibly toxic trace elements that have been identified as an environmental concern in the aetiology of a number of neurological and neurodegenerative illnesses. SIRT1, a member of the sirtuin family has received most attention for its potential neuroprotective properties. SIRT1 is an intriguing therapeutic target since it demonstrates important functions to increase neurogenesis and cellular lifespan by modulating multiple pathways. It promotes axonal extension, neurite growth, and dendritic branching during the development of neurons. Additionally, it contributes to neurogenesis, synaptic plasticity, memory development, and neuroprotection. This review summarizes the possible role of SIRT1 signalling pathway in potentially toxic trace elements -induced neurodevelopmental toxicity, highlighting some molecular pathways such as mitochondrial biogenesis, CREB/BDNF and PGC-1α/NRF1/TFAM.
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Affiliation(s)
- Aqsa Fathima
- Department of Pharmacology, Kasturba Medical College, Manipal, Manipal Academy of Higher Education, Manipal, Karnataka, 576104, India
| | - Newly Bagang
- Department of Pharmacology, Kasturba Medical College, Manipal, Manipal Academy of Higher Education, Manipal, Karnataka, 576104, India
| | - Nitesh Kumar
- Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education and Research (NIPER), Hajipur, Industrial area Hajipur, Vaishali, Bihar, 844102, India
| | - Somasish Ghosh Dastidar
- Centre for Molecular Neurosciences, Kasturba Medical College, Manipal, Manipal Academy of Higher Education, Manipal, Karnataka, 576104, India
| | - Smita Shenoy
- Department of Pharmacology, Kasturba Medical College, Manipal, Manipal Academy of Higher Education, Manipal, Karnataka, 576104, India.
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Koyama H, Kamogashira T, Yamasoba T. Heavy Metal Exposure: Molecular Pathways, Clinical Implications, and Protective Strategies. Antioxidants (Basel) 2024; 13:76. [PMID: 38247500 PMCID: PMC10812460 DOI: 10.3390/antiox13010076] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2023] [Revised: 12/25/2023] [Accepted: 12/28/2023] [Indexed: 01/23/2024] Open
Abstract
Heavy metals are often found in soil and can contaminate drinking water, posing a serious threat to human health. Molecular pathways and curation therapies for mitigating heavy metal toxicity have been studied for a long time. Recent studies on oxidative stress and aging have shown that the molecular foundation of cellular damage caused by heavy metals, namely, apoptosis, endoplasmic reticulum stress, and mitochondrial stress, share the same pathways as those involved in cellular senescence and aging. In recent aging studies, many types of heavy metal exposures have been used in both cellular and animal aging models. Chelation therapy is a traditional treatment for heavy metal toxicity. However, recently, various antioxidants have been found to be effective in treating heavy metal-induced damage, shifting the research focus to investigating the interplay between antioxidants and heavy metals. In this review, we introduce the molecular basis of heavy metal-induced cellular damage and its relationship with aging, summarize its clinical implications, and discuss antioxidants and other agents with protective effects against heavy metal damage.
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Affiliation(s)
- Hajime Koyama
- Department of Otolaryngology and Head and Neck Surgery, Graduate School of Medicine, The University of Tokyo, Tokyo 113-8654, Japan
| | - Teru Kamogashira
- Department of Otolaryngology and Head and Neck Surgery, Graduate School of Medicine, The University of Tokyo, Tokyo 113-8654, Japan
| | - Tatsuya Yamasoba
- Department of Otolaryngology and Head and Neck Surgery, Graduate School of Medicine, The University of Tokyo, Tokyo 113-8654, Japan
- Tokyo Teishin Hospital, Tokyo 102-0071, Japan
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Xie Z, Ying Q, Luo H, Qin M, Pang Y, Hu H, Zhong J, Song Y, Zhang Z, Zhang X. Resveratrol Alleviates Retinal Ischemia-Reperfusion Injury by Inhibiting the NLRP3/Gasdermin D/Caspase-1/Interleukin-1β Pyroptosis Pathway. Invest Ophthalmol Vis Sci 2023; 64:28. [PMID: 38133508 PMCID: PMC10746937 DOI: 10.1167/iovs.64.15.28] [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: 07/19/2023] [Accepted: 11/23/2023] [Indexed: 12/23/2023] Open
Abstract
Purpose The purpose of this study is to investigate the anti-pyroptotic effect of resveratrol in the context of ischemia-reperfusion (I/R)-induced retinal injury, with a particular focus on Müller glial cells (MGCs) and to elucidate the underlying molecular mechanisms. Methods The retinal I/R model was constructed in mice and pyroptotic markers were measured at six, 12, 24, 48, and 72 hours after I/R injury to determine the peak of pyroptotic activity. The effects of resveratrol on pyroptosis, inflammasomes, and the activation of MGCs after I/R injury were observed on the retina of mice. Moreover, induction of pyroptosis in rat Müller glial cells (r-MC) via lipopolysaccharide was used to explore the effects of resveratrol on pyroptosis of r-MC in vitro. Results After the induction of retinal I/R injury in mice, the intricate involvement of pyroptosis in the progressive degeneration of the retina was observed, reaching its zenith at the onset of 24 hours after I/R injury. Resveratrol treatment alleviated I/R injury on the retina, relieved retinal ganglion cells death. In addition, resveratrol inhibited Caspase-1 activation, gasdermin D (GSDMD-N) cleavage, the inflammasome assembly, and the release of inflammatory cytokines, simultaneously relieving the MGCs activation. Furthermore, resveratrol inhibited the pyroptosis-related NLRP3/GSDMD-N/TMS1/ASC/Caspase-1/IL-1β pathway in r-MC cells, and mitigated cells death in vitro. Conclusions Pyroptosis plays an important role in the pathogenesis of retinal I/R injury. Resveratrol can attenuate pyroptotic-driven damage in the retina and MGC by inhibiting the NLRP3/GSDMD-N/TMS1/ASC/Caspase-1/IL-1β pyroptosis pathway.
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Affiliation(s)
- Zhi Xie
- Affiliated Eye Hospital of Nanchang University, Jiangxi Research Institute of Ophthalmology and Visual Science, Jiangxi Provincial Key Laboratory for Ophthalmology, Jiangxi Clinical Research Center for Ophthalmic Disease, Nanchang, China
- Xingguo Hospital Affiliated to Gannan Medical University, Xingguo, China
| | - Qian Ying
- Affiliated Eye Hospital of Nanchang University, Jiangxi Research Institute of Ophthalmology and Visual Science, Jiangxi Provincial Key Laboratory for Ophthalmology, Jiangxi Clinical Research Center for Ophthalmic Disease, Nanchang, China
| | - Hongdou Luo
- Affiliated Eye Hospital of Nanchang University, Jiangxi Research Institute of Ophthalmology and Visual Science, Jiangxi Provincial Key Laboratory for Ophthalmology, Jiangxi Clinical Research Center for Ophthalmic Disease, Nanchang, China
| | - Mengqi Qin
- Affiliated Eye Hospital of Nanchang University, Jiangxi Research Institute of Ophthalmology and Visual Science, Jiangxi Provincial Key Laboratory for Ophthalmology, Jiangxi Clinical Research Center for Ophthalmic Disease, Nanchang, China
- Faculty of Life Sciences & Medicine, King's College London, London, United Kingdom
| | - Yulian Pang
- Affiliated Eye Hospital of Nanchang University, Jiangxi Research Institute of Ophthalmology and Visual Science, Jiangxi Provincial Key Laboratory for Ophthalmology, Jiangxi Clinical Research Center for Ophthalmic Disease, Nanchang, China
| | - Haijian Hu
- Affiliated Eye Hospital of Nanchang University, Jiangxi Research Institute of Ophthalmology and Visual Science, Jiangxi Provincial Key Laboratory for Ophthalmology, Jiangxi Clinical Research Center for Ophthalmic Disease, Nanchang, China
| | - Jing Zhong
- Affiliated Eye Hospital of Nanchang University, Jiangxi Research Institute of Ophthalmology and Visual Science, Jiangxi Provincial Key Laboratory for Ophthalmology, Jiangxi Clinical Research Center for Ophthalmic Disease, Nanchang, China
| | - Yuning Song
- Affiliated Eye Hospital of Nanchang University, Jiangxi Research Institute of Ophthalmology and Visual Science, Jiangxi Provincial Key Laboratory for Ophthalmology, Jiangxi Clinical Research Center for Ophthalmic Disease, Nanchang, China
| | - Ziqiao Zhang
- Affiliated Eye Hospital of Nanchang University, Jiangxi Research Institute of Ophthalmology and Visual Science, Jiangxi Provincial Key Laboratory for Ophthalmology, Jiangxi Clinical Research Center for Ophthalmic Disease, Nanchang, China
| | - Xu Zhang
- Affiliated Eye Hospital of Nanchang University, Jiangxi Research Institute of Ophthalmology and Visual Science, Jiangxi Provincial Key Laboratory for Ophthalmology, Jiangxi Clinical Research Center for Ophthalmic Disease, Nanchang, China
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Ungurianu A, Zanfirescu A, Margină D. Sirtuins, resveratrol and the intertwining cellular pathways connecting them. Ageing Res Rev 2023; 88:101936. [PMID: 37116286 DOI: 10.1016/j.arr.2023.101936] [Citation(s) in RCA: 14] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2023] [Revised: 04/06/2023] [Accepted: 04/17/2023] [Indexed: 04/30/2023]
Abstract
Sirtuins are a family of NAD+-dependent deacylases with numerous physiological and pathological implications, which lately became an attractive therapeutic target. Sirtuin-activating compounds (STACs) could be useful in disease prevention and treatment. Despite its bioavailability issues, resveratrol exerts a myriad of beneficial effects, known as the "resveratrol paradox". Modulation of sirtuins' expression and activity may, in fact, underlie many of resveratrol revered actions; however, the cellular pathways affected by modulating the activity of each sirtuin isoform, in different physio-pathological conditions, are not fully known. The purpose of this review was to summarize recent reports concerning the effects of resveratrol on the activity of sirtuins in different experimental settings, focusing on in vitro and in vivo preclinical studies. Most reports concern SIRT1, however recent studies dive into the effects initiated via other isoforms. Numerous cellular signaling pathways were reported to be modulated by resveratrol in a sirtuin-dependent manner (increased phosphorylation of MAPKs, AKT, AMPK, RhoA, BDNF, decreased activation of NLRP3 inflammasome, NF-κB, STAT3, upregulation of SIRT1/SREBP1c pathway, reduced β-amyloid via SIRT1-NF-κB-BACE1 signaling and counteracting mitochondrial damage by deacetylating PGC-1α). Thus, resveratrol may be the ideal candidate in the search for STACs as a tool for preventing and treating inflammatory and neurodegenerative diseases.
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Affiliation(s)
- Anca Ungurianu
- Carol Davila University of Medicine and Pharmacy, Faculty of Pharmacy, Department of Biochemistry, Traian Vuia 6, 020956 Bucharest, Romania
| | - Anca Zanfirescu
- Carol Davila University of Medicine and Pharmacy, Faculty of Pharmacy, Department of Pharmacology, Traian Vuia 6, 020956 Bucharest, Romania.
| | - Denisa Margină
- Carol Davila University of Medicine and Pharmacy, Faculty of Pharmacy, Department of Biochemistry, Traian Vuia 6, 020956 Bucharest, Romania
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Liu M, Liu R, Yang M, Ba Y, Deng Q, Zhang Y, Han L, Gao L, Huang H. Combined exposure to lead and high-fat diet induced neuronal deficits in rats: Anti-neuroinflammatory role of SIRT1. Food Chem Toxicol 2023; 177:113857. [PMID: 37244597 DOI: 10.1016/j.fct.2023.113857] [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: 02/28/2023] [Revised: 05/19/2023] [Accepted: 05/23/2023] [Indexed: 05/29/2023]
Abstract
INTRODUCTION Lead (Pb) exposure and high-fat diet (HFD) trigger neurotoxicity, which may involve neuroinflammation. However, the mechanism by which combined Pb and HFD exposure induces nucleotide oligomerization domain-like receptor family pyrin domain 3 (NLRP3) inflammasome activation has not been fully elucidated. MATERIAL AND METHODS The Sprague-Dawley (SD) rat model of exposure to Pb and HFD was established to reveal the influence of co-exposure on cognition and identify signaling clues that mediate neuroinflammation and synaptic dysregulation. PC12 cells was treated with Pb and PA in vitro. Silent information regulator 1 (SIRT1) agonist (SRT 1720) was employed as intervention agent. RESULTS Our results showed that Pb and HFD exposure induced cognitive impairment and lead to neurological damage in rats. Meanwhile, Pb and HFD could stimulate the NLRP3 inflammasome assembly and activate caspase 1, releasing proinflammatory cytokines interleukin-1β (IL-1β) and interleukin-18 (IL-18), further promoting neuronal cell activation and amplifying neuroinflammatory responses. Additionally, our findings suggest that SIRT1 plays a role in Pb and HFD induced neuroinflammation. However, the use of SRT 1720 agonists showed some potential in alleviating these impairments. CONCLUSION Pb exposure and HFD intake could induce neuronal damage through activation of the NLRP3 inflammasome pathway and synaptic dysregulation, while the NLRP3 inflammasome pathway may be rescued via activating SIRT1.
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Affiliation(s)
- Mengchen Liu
- Department of Environmental Health, College of Public Health, Zhengzhou University, Zhengzhou, Henan province, 450001, China.
| | - Rundong Liu
- Department of Environmental Health, College of Public Health, Zhengzhou University, Zhengzhou, Henan province, 450001, China.
| | - Mingzhi Yang
- Department of Environmental Health, College of Public Health, Zhengzhou University, Zhengzhou, Henan province, 450001, China.
| | - Yue Ba
- Department of Environmental Health, College of Public Health, Zhengzhou University, Zhengzhou, Henan province, 450001, China.
| | - Qihong Deng
- Department of Environmental Health, College of Public Health, Zhengzhou University, Zhengzhou, Henan province, 450001, China.
| | - Yu Zhang
- State Key Laboratory of Microbial Technology, Qingdao, Shandong, 266000, China; Shandong Engineering Research Center of Biomarker and Artificial Intelligence Application, Jinan, Shandong, 250100, China; Institute of Marine Science and Technology, Shandong University, Qingdao, Shandong, 266000, China.
| | - Lin Han
- Shandong Engineering Research Center of Biomarker and Artificial Intelligence Application, Jinan, Shandong, 250100, China; Institute of Marine Science and Technology, Shandong University, Qingdao, Shandong, 266000, China.
| | - Lihua Gao
- Zhengzhou Center for Disease Control and Prevention, Zhengzhou, Henan, 450052, China.
| | - Hui Huang
- Department of Environmental Health, College of Public Health, Zhengzhou University, Zhengzhou, Henan province, 450001, China.
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Liao S, Fu X, Huang J, Wang Y, Lu Y, Zhou S. Suppression of SIRT1/FXR signaling pathway contributes to oleanolic acid-induced liver injury. Toxicol Appl Pharmacol 2023; 467:116509. [PMID: 37028458 DOI: 10.1016/j.taap.2023.116509] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2023] [Revised: 02/21/2023] [Accepted: 04/02/2023] [Indexed: 04/08/2023]
Abstract
Oleanolic acid (OA) is a pentacyclic triterpenoid compound used clinically for acute and chronic hepatitis. However, high dose or long-term use of OA causes hepatotoxicity, which limits its clinical application. Hepatic Sirtuin (SIRT1) participates in the regulation of FXR signaling and maintains hepatic metabolic homeostasis. This study was designed to determine whether SIRT1/FXR signaling pathway contributes to the hepatotoxicity caused by OA. C57BL/6J mice were administered with OA for 4 consecutive days to induce hepatotoxicity. The results showed that OA suppressed the expression of FXR and its downstream targets CYP7A1, CYP8B1, BSEP and MRP2 at both mRNA and protein levels, breaking the homeostasis of bile acid leading to hepatotoxicity. However, treatment with FXR agonist GW4064 noticeably attenuated hepatotoxicity caused by OA. Furthermore, it was found that OA inhibited protein expression of SIRT1. Activation of SIRT1 by its agonist SRT1720 significantly improved OA-induced hepatotoxicity. Meanwhile, SRT1720 significantly reduced the inhibition of protein expression of FXR and FXR-downstream proteins. These results suggested that OA may cause hepatotoxicity through SIRT1 dependent suppression of FXR signaling pathway. In vitro experiments confirmed that OA suppressed protein expressions of FXR and its targets through inhibition of SIRT1. It was further revealed that silencing of HNF1α with siRNA significantly weakened regulatory effects of SIRT1 on the expression of FXR as well as its target genes. In conclusion, our study reveals that SIRT1/FXR pathway is crucial in OA-induced hepatotoxicity. Activation of SIRT1/HNF1α/FXR axis may represent a novel therapeutic target for ameliorating OA and other herb-induced hepatotoxicity.
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Ouyang L, Li Q, Rao S, Su R, Zhu Y, Du G, Xie J, Zhou F, Feng C, Fan G. Cognitive outcomes caused by low-level lead, cadmium, and mercury mixture exposure at distinct phases of brain development. Food Chem Toxicol 2023; 175:113707. [PMID: 36893892 DOI: 10.1016/j.fct.2023.113707] [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: 01/17/2023] [Revised: 02/16/2023] [Accepted: 03/02/2023] [Indexed: 03/09/2023]
Abstract
Contaminated water and food are the main sources of lead, cadmium, and mercury in the human body. Long-term and low-level ingestion of these toxic heavy metals may affect brain development and cognition. However, the neurotoxic effects of exposure to lead, cadmium, and mercury mixture (Pb + Cd + Hg) at different stages of brain development are rarely elucidated. In this study, different doses of low-level Pb + Cd + Hg were administered to Sprague-Dawley rats via drinking water during the critical stage of brain development, late stage, and after maturation, respectively. Our findings showed that Pb + Cd + Hg exposure decreased the density of memory- and learning-related dendritic spines in the hippocampus during the critical period of brain development, resulting in hippocampus-dependent spatial memory deficits. Only the density of learning-related dendritic spines was reduced during the late phase of brain development and a higher-dose of Pb + Cd + Hg exposure was required, which led to hippocampus-independent spatial memory abnormalities. Exposure to Pb + Cd + Hg after brain maturation revealed no significant change in dendritic spines or cognitive function. Further molecular analysis indicated that morphological and functional changes caused by Pb + Cd + Hg exposure during the critical phase were associated with PSD95 and GluA1 dysregulation. Collectively, the effects of Pb + Cd + Hg on cognition varied depending on the brain development stages.
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Affiliation(s)
- Lu Ouyang
- School of Public Health, Nanchang University, Nanchang, 330006, PR China; State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang, 330047, PR China
| | - Qi Li
- School of Public Health, Nanchang University, Nanchang, 330006, PR China; State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang, 330047, PR China
| | - Shaoqi Rao
- School of Public Health, Nanchang University, Nanchang, 330006, PR China
| | - Rui Su
- School of Public Health, Nanchang University, Nanchang, 330006, PR China
| | - Yanhui Zhu
- School of Public Health, Nanchang University, Nanchang, 330006, PR China
| | - Guihua Du
- School of Public Health, Nanchang University, Nanchang, 330006, PR China; Jiangxi Provincial Key Laboratory of Preventive Medicine, Nanchang University, Nanchang, 330006, PR China
| | - Jie Xie
- School of Public Health, Nanchang University, Nanchang, 330006, PR China; Jiangxi Provincial Key Laboratory of Preventive Medicine, Nanchang University, Nanchang, 330006, PR China
| | - Fankun Zhou
- School of Public Health, Nanchang University, Nanchang, 330006, PR China; Jiangxi Provincial Key Laboratory of Preventive Medicine, Nanchang University, Nanchang, 330006, PR China
| | - Chang Feng
- School of Public Health, Nanchang University, Nanchang, 330006, PR China; Jiangxi Provincial Key Laboratory of Preventive Medicine, Nanchang University, Nanchang, 330006, PR China
| | - Guangqin Fan
- School of Public Health, Nanchang University, Nanchang, 330006, PR China; State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang, 330047, PR China; Jiangxi Provincial Key Laboratory of Preventive Medicine, Nanchang University, Nanchang, 330006, PR China.
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Wang R, Yang M, Wu Y, Liu R, Liu M, Li Q, Su X, Xin Y, Huo W, Deng Q, Ba Y, Huang H. SIRT1 modifies DNA methylation linked to synaptic deficits induced by Pb in vitro and in vivo. Int J Biol Macromol 2022; 217:219-228. [PMID: 35839949 DOI: 10.1016/j.ijbiomac.2022.07.060] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2022] [Revised: 06/29/2022] [Accepted: 07/08/2022] [Indexed: 11/05/2022]
Abstract
To investigate the mechanism of Silent information regulator 1 (SIRT1) regulation of DNA methylation and thus the expression of synaptic plasticity-related genes induced by lead (Pb) exposure, the early-life Sprague-Dawley rats and PC12 cells were used to establish Pb exposure models and treated with SIRT1 agonists (resveratrol and SRT1720). In vivo results demonstrated that Pb exposure increased the expression of DNMTs, MeCP2, PP1 and cleaved caspase3, decreased the expression of SIRT1, BDNF and RELIN and altered DNA methylation levels of synaptic plasticity genes. Moreover, we observed marked pathological damage in the hippocampal CA1 region of the 0.2 % Pb-exposure group. After treatment with resveratrol, the effects of Pb exposure on the expression of the above molecules and pathological features were significantly ameliorated in the hippocampus of rats. In vitro results showed that after the treatment with SRT1720, the expression of SIRT1 was activated and thus reversed the effect on DNMTs, MeCP2, apoptosis and synaptic plasticity-related genes and their DNA methylation levels induced by Pb exposure. In conclusion, we validated the important protective role of SIRT1 in neurotoxicity induced by Pb exposure through in vivo and in vitro experiments, providing potential therapeutic targets for the treatment and prevention of brain damage.
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Affiliation(s)
- Ruike Wang
- Department of Environmental Health, College of Public Health, Zhengzhou University, Zhengzhou, Henan province, China; Environment and Health Innovation Team, College of Public Health, Zhengzhou University, Zhengzhou, Henan province 450001, China
| | - Mingzhi Yang
- Department of Environmental Health, College of Public Health, Zhengzhou University, Zhengzhou, Henan province, China; Environment and Health Innovation Team, College of Public Health, Zhengzhou University, Zhengzhou, Henan province 450001, China
| | - Yingying Wu
- Department of Environmental Health, College of Public Health, Zhengzhou University, Zhengzhou, Henan province, China; Environment and Health Innovation Team, College of Public Health, Zhengzhou University, Zhengzhou, Henan province 450001, China
| | - Rundong Liu
- Department of Environmental Health, College of Public Health, Zhengzhou University, Zhengzhou, Henan province, China; Environment and Health Innovation Team, College of Public Health, Zhengzhou University, Zhengzhou, Henan province 450001, China
| | - Mengchen Liu
- Department of Environmental Health, College of Public Health, Zhengzhou University, Zhengzhou, Henan province, China; Environment and Health Innovation Team, College of Public Health, Zhengzhou University, Zhengzhou, Henan province 450001, China
| | - Qiong Li
- Department of Environmental Health, College of Public Health, Zhengzhou University, Zhengzhou, Henan province, China; Environment and Health Innovation Team, College of Public Health, Zhengzhou University, Zhengzhou, Henan province 450001, China
| | - Xiao Su
- Department of Environmental Health, College of Public Health, Zhengzhou University, Zhengzhou, Henan province, China; Environment and Health Innovation Team, College of Public Health, Zhengzhou University, Zhengzhou, Henan province 450001, China
| | - Yongjuan Xin
- Department of Environmental Health, College of Public Health, Zhengzhou University, Zhengzhou, Henan province, China
| | - Wenqian Huo
- Department of Environmental Health, College of Public Health, Zhengzhou University, Zhengzhou, Henan province, China
| | - Qihong Deng
- Department of Environmental Health, College of Public Health, Zhengzhou University, Zhengzhou, Henan province, China
| | - Yue Ba
- Department of Environmental Health, College of Public Health, Zhengzhou University, Zhengzhou, Henan province, China; Environment and Health Innovation Team, College of Public Health, Zhengzhou University, Zhengzhou, Henan province 450001, China
| | - Hui Huang
- Department of Environmental Health, College of Public Health, Zhengzhou University, Zhengzhou, Henan province, China; Environment and Health Innovation Team, College of Public Health, Zhengzhou University, Zhengzhou, Henan province 450001, China.
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11
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Liu R, Bai L, Liu M, Wang R, Wu Y, Li Q, Ba Y, Zhang H, Zhou G, Yu F, Huang H. Combined exposure of lead and high-fat diet enhanced cognitive decline via interacting with CREB-BDNF signaling in male rats. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2022; 304:119200. [PMID: 35364187 DOI: 10.1016/j.envpol.2022.119200] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/23/2021] [Revised: 03/03/2022] [Accepted: 03/21/2022] [Indexed: 06/14/2023]
Abstract
The health risks to populations induced by lead (Pb) and high-fat diets (HFD) have become a global public health problem. Pb and HFD often co-exist and are co-occurring risk factors for cognitive impairment. This study investigates effect of combined Pb and HFD on cognitive function, and explores the underlying mechanisms in terms of regulatory components of synaptic plasticity and insulin signaling pathway. We showed that the co-exposure of Pb and HFD further increased blood Pb levels, caused body weight loss and dyslipidemia. The results from Morris water maze (MWM) test and Nissl staining disclosed that Pb and HFD each contributed to cognitive deficits and neuronal damage and combined exposure enhanced this toxic injury. Pb and HFD decreased the levels of synapsin-1, GAP-43 and PSD-95 protein related to synaptic properties and SIRT1, NMDARs, phosphorylated CREB and BDNF related to synaptic plasticity regulatory, and these decreases was greater when combined exposure. Additionally, we revealed that Pb and HFD promoted IRS-1 phosphorylation and subsequently reduced downstream PI3K-Akt kinases phosphorylation in hippocampus and cortex of rats, and this process was aggravated when co-exposure. Collectively, our data suggested that combined exposure of Pb and HFD enhanced cognitive deficits, pointing to additive effects in rats than the individual stress effects related to multiple signaling pathways with CREB-BDNF signaling as the hub. This study emphasizes the need to evaluate the effects of mixed exposures on brain function in realistic environment and to better inform prevention of neurological disorders via modulating central pathway, such as CREB/BDNF signaling.
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Affiliation(s)
- Rundong Liu
- Department of Environmental Health &Environment and Health Innovation Team, College of Public Health, Zhengzhou University, Zhengzhou, Henan, China
| | - Lin Bai
- Department of Environmental Health &Environment and Health Innovation Team, College of Public Health, Zhengzhou University, Zhengzhou, Henan, China
| | - Mengchen Liu
- Department of Environmental Health &Environment and Health Innovation Team, College of Public Health, Zhengzhou University, Zhengzhou, Henan, China
| | - Ruike Wang
- Department of Environmental Health &Environment and Health Innovation Team, College of Public Health, Zhengzhou University, Zhengzhou, Henan, China
| | - Yingying Wu
- Department of Environmental Health &Environment and Health Innovation Team, College of Public Health, Zhengzhou University, Zhengzhou, Henan, China
| | - Qiong Li
- Department of Environmental Health &Environment and Health Innovation Team, College of Public Health, Zhengzhou University, Zhengzhou, Henan, China
| | - Yue Ba
- Department of Environmental Health &Environment and Health Innovation Team, College of Public Health, Zhengzhou University, Zhengzhou, Henan, China
| | - Huizhen Zhang
- Department of Environmental Health &Environment and Health Innovation Team, College of Public Health, Zhengzhou University, Zhengzhou, Henan, China
| | - Guoyu Zhou
- Department of Environmental Health &Environment and Health Innovation Team, College of Public Health, Zhengzhou University, Zhengzhou, Henan, China
| | - Fangfang Yu
- Department of Environmental Health &Environment and Health Innovation Team, College of Public Health, Zhengzhou University, Zhengzhou, Henan, China
| | - Hui Huang
- Department of Environmental Health &Environment and Health Innovation Team, College of Public Health, Zhengzhou University, Zhengzhou, Henan, China.
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12
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Wang R, Wu Y, Liu R, Liu M, Li Q, Ba Y, Huang H. Deciphering therapeutic options for neurodegenerative diseases: insights from SIRT1. J Mol Med (Berl) 2022; 100:537-553. [PMID: 35275221 DOI: 10.1007/s00109-022-02187-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2021] [Revised: 03/01/2022] [Accepted: 03/03/2022] [Indexed: 12/23/2022]
Abstract
Silent information regulator 1 (SIRT1) is a nicotinamide adenine dinucleotide (NAD +)-dependent protein deacetylase that exerts biological effects through nucleoplasmic transfer. Recent studies have highlighted that SIRT1 deacetylates protein substrates to exert its neuroprotective effects, including decreased oxidative stress and inflammatory, increases autophagy, increases levels of nerve growth factors (correlated with behavioral changes), and maintains neural integrity (affects neuronal development and function) in aging or neurological disorder. In this review, we highlight the molecular mechanisms underlying the protective role of SIRT1 in modulating neurodegeneration, focusing on protein homeostasis, aging-related signaling pathways, neurogenesis, and synaptic plasticity. Meanwhile, the potential of targeting SIRT1 to block the occurrence and progression of neurodegenerative diseases is also discussed. Taken together, this review provides an up-to-date evaluation of our current understanding of the neuroprotective mechanisms of SIRT1 and also be involved in the potential therapeutic opportunities of AD and related neurodegenerative diseases.
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Affiliation(s)
- Ruike Wang
- Department of Environmental Health, College of Public Health, Zhengzhou University, No.100 Kexue Avenue, Henan province, Zhengzhou, 450001, China.,Environment and Health Innovation Team, College of Public Health, Zhengzhou University, Henan province, Zhengzhou, 450001, China
| | - Yingying Wu
- Department of Environmental Health, College of Public Health, Zhengzhou University, No.100 Kexue Avenue, Henan province, Zhengzhou, 450001, China.,Environment and Health Innovation Team, College of Public Health, Zhengzhou University, Henan province, Zhengzhou, 450001, China
| | - Rundong Liu
- Department of Environmental Health, College of Public Health, Zhengzhou University, No.100 Kexue Avenue, Henan province, Zhengzhou, 450001, China.,Environment and Health Innovation Team, College of Public Health, Zhengzhou University, Henan province, Zhengzhou, 450001, China
| | - Mengchen Liu
- Department of Environmental Health, College of Public Health, Zhengzhou University, No.100 Kexue Avenue, Henan province, Zhengzhou, 450001, China.,Environment and Health Innovation Team, College of Public Health, Zhengzhou University, Henan province, Zhengzhou, 450001, China
| | - Qiong Li
- Department of Environmental Health, College of Public Health, Zhengzhou University, No.100 Kexue Avenue, Henan province, Zhengzhou, 450001, China.,Environment and Health Innovation Team, College of Public Health, Zhengzhou University, Henan province, Zhengzhou, 450001, China
| | - Yue Ba
- Department of Environmental Health, College of Public Health, Zhengzhou University, No.100 Kexue Avenue, Henan province, Zhengzhou, 450001, China.,Environment and Health Innovation Team, College of Public Health, Zhengzhou University, Henan province, Zhengzhou, 450001, China
| | - Hui Huang
- Department of Environmental Health, College of Public Health, Zhengzhou University, No.100 Kexue Avenue, Henan province, Zhengzhou, 450001, China. .,Environment and Health Innovation Team, College of Public Health, Zhengzhou University, Henan province, Zhengzhou, 450001, China.
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