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Qiao Y, Cui Y, Tan Y, Zhuang C, Li X, Yong Y, Zhang X, Ren X, Cai M, Yang J, Lang Y, Wang J, Liang C, Zhang J. Fluoride induces immunotoxicity by regulating riboflavin transport and metabolism partly through IL-17A in the spleen. JOURNAL OF HAZARDOUS MATERIALS 2024; 476:135085. [PMID: 38968825 DOI: 10.1016/j.jhazmat.2024.135085] [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: 01/12/2024] [Revised: 06/27/2024] [Accepted: 07/01/2024] [Indexed: 07/07/2024]
Abstract
The impairment of the immune system by fluoride is a public health concern worldwide, yet the underlying mechanism is unclear. Both riboflavin and IL-17A are closely related to immune function and regulate the testicular toxicity of fluoride. However, whether riboflavin or IL-17A is involved in fluoride-induced immunotoxicity is unknown. Here, we first established a male ICR mouse model by treating mice with sodium fluoride (NaF) (100 mg/L) via the drinking water for 91 days. The results showed that fluoride increased the expression of the proinflammatory factors IL-1β and IL-17A, which led to splenic inflammation and morphological injury. Moreover, the expression levels of the riboflavin transporters SLC52A2 and SLC52A3; the transformation-related enzymes RFK and FLAD1; and the key mitochondrial functional determinants SDH, COX, and ATP in the spleen were measured via real-time PCR, Western blotting, and ELISA. The results revealed that fluoride disrupted riboflavin transport, transformation, metabolism, and mitochondrial function. Furthermore, wild-type (WT) and IL-17A knockout (IL-17A-/-) C57BL/6 J male mice of the same age were treated with NaF (24 mg/kg·bw, equivalent to 100 mg/L) and/or riboflavin sodium phosphate (5 mg/kg·bw) via gavage for 91 days. Similar parameters were evaluated as above. The results confirmed that fluoride increased riboflavin metabolism through RFK but not through FLAD1. Fluoride also affected mitochondrial function and activated neutrophils (marked with Ly6g) and macrophages (marked with CD68) in the spleen. Interestingly, IL-17A partly mediated fluoride-induced riboflavin metabolism disorder and immunotoxicity in the spleen. This work not only reveals a novel toxic mechanism for fluoride but also provides new clues for exploring the physiological function of riboflavin and for diagnosing and treating the toxic effects of fluoride in the environment.
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Affiliation(s)
- Yurou Qiao
- College of Veterinary Medicine, Shanxi Agricultural University, Taigu, Shanxi 030801, PR China
| | - Yukun Cui
- College of Veterinary Medicine, Shanxi Agricultural University, Taigu, Shanxi 030801, PR China
| | - Yanjia Tan
- College of Veterinary Medicine, Shanxi Agricultural University, Taigu, Shanxi 030801, PR China
| | - Cuicui Zhuang
- College of Veterinary Medicine, Shanxi Agricultural University, Taigu, Shanxi 030801, PR China
| | - Xiang Li
- College of Veterinary Medicine, Shanxi Agricultural University, Taigu, Shanxi 030801, PR China
| | - Yufei Yong
- College of Veterinary Medicine, Shanxi Agricultural University, Taigu, Shanxi 030801, PR China
| | - Xinying Zhang
- College of Veterinary Medicine, Shanxi Agricultural University, Taigu, Shanxi 030801, PR China
| | - Xuting Ren
- College of Veterinary Medicine, Shanxi Agricultural University, Taigu, Shanxi 030801, PR China
| | - Miaomiao Cai
- College of Veterinary Medicine, Shanxi Agricultural University, Taigu, Shanxi 030801, PR China
| | - Jie Yang
- College of Veterinary Medicine, Shanxi Agricultural University, Taigu, Shanxi 030801, PR China
| | - Yilin Lang
- College of Veterinary Medicine, Shanxi Agricultural University, Taigu, Shanxi 030801, PR China
| | - Jundong Wang
- College of Veterinary Medicine, Shanxi Agricultural University, Taigu, Shanxi 030801, PR China
| | - Chen Liang
- College of Animal Science, Shanxi Agricultural University, Taigu, Shanxi 030801, PR China
| | - Jianhai Zhang
- College of Veterinary Medicine, Shanxi Agricultural University, Taigu, Shanxi 030801, PR China.
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Zhu S, Liu B, Fu G, Yang L, Wei D, Zhang L, Zhang Q, Gao Y, Sun D, Wei W. PKC-θ is an important driver of fluoride-induced immune imbalance of regulatory T cells/effector T cells. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 934:173081. [PMID: 38754514 DOI: 10.1016/j.scitotenv.2024.173081] [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: 02/02/2024] [Revised: 03/28/2024] [Accepted: 05/07/2024] [Indexed: 05/18/2024]
Abstract
Fluoride is unnecessary in the human body. Long-term fluoride exposure may lead to immune system abnormalities. However, the mechanism remains unclear. This study aim to explore the mechanism of fluoride interference in the immune system and also identify the key indicators of fluoride-induced immune damage. Questionnaires were used to collect basic information. Multiple linear analyses and other statistical methods were used in order to process the data. Flow cytometry was used to detect relevant immunomarkers and analyze immune damage. Simultaneously, Wistar rats and cell models exposed to fluoride were established to detect the effects of fluoride on immune homeostasis. The results showed that sex, residence time, smoking, and Corona Virus Disease 2019 (COVID-19) infection may indirectly influence fluoride-induced immune damage. In residents of fluoride-exposed areas, there was a significant decrease in CD3+ T lymphocytes and CD4+ and CD8+ cells and a downward trend in the CD4+/CD8+ cell ratio. CD4+CD8+/CD4+, regulatory T cells (Tregs), and Tregs/effector T cells (Teffs) ratios showed opposite changes. Fluoride inhibits T cell activation by inhibiting the expression and phosphorylation of Protein Kinase C-θ (PKC-θ), hinders the internalization of T cell receptors, and affects NF-kB and c-Jun protein expression, leading to homeostatic Treg/Teff imbalance in vivo and in vitro experiments. This study represents the first evidence suggesting that PKC-θ may be the key to immune imbalance in the body under fluoride exposure. It is possible that Tregs/Teffs cell ratio provide a reference point for the diagnosis and treatment of fluoride-induced immune damage.
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Affiliation(s)
- Siqi Zhu
- Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin, Heilongjiang 150081, China
| | - Bingshu Liu
- Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin, Heilongjiang 150081, China
| | - Guiyu Fu
- Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin, Heilongjiang 150081, China
| | - Liu Yang
- Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin, Heilongjiang 150081, China
| | - Dan Wei
- Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin, Heilongjiang 150081, China
| | - Liwei Zhang
- Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin, Heilongjiang 150081, China; Key Lab of Etiology and Epidemiology, Education Bureau of Heilongjiang Province & Ministry of Health (23618504), Harbin Medical University, Harbin 150081, China; Heilongjiang Provincial Key Lab of Trace Elements and Human Health Harbin Medical University, Harbin 150081, China
| | - Qiong Zhang
- Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin, Heilongjiang 150081, China
| | - Yanhui Gao
- Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin, Heilongjiang 150081, China; Key Lab of Etiology and Epidemiology, Education Bureau of Heilongjiang Province & Ministry of Health (23618504), Harbin Medical University, Harbin 150081, China; Heilongjiang Provincial Key Lab of Trace Elements and Human Health Harbin Medical University, Harbin 150081, China.
| | - Dianjun Sun
- Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin, Heilongjiang 150081, China; Key Lab of Etiology and Epidemiology, Education Bureau of Heilongjiang Province & Ministry of Health (23618504), Harbin Medical University, Harbin 150081, China; Heilongjiang Provincial Key Lab of Trace Elements and Human Health Harbin Medical University, Harbin 150081, China.
| | - Wei Wei
- Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin, Heilongjiang 150081, China; Key Lab of Etiology and Epidemiology, Education Bureau of Heilongjiang Province & Ministry of Health (23618504), Harbin Medical University, Harbin 150081, China; Heilongjiang Provincial Key Lab of Trace Elements and Human Health Harbin Medical University, Harbin 150081, China.
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3
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Zhu S, Wei W. Progress in research on the role of fluoride in immune damage. Front Immunol 2024; 15:1394161. [PMID: 38807586 PMCID: PMC11130356 DOI: 10.3389/fimmu.2024.1394161] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2024] [Accepted: 04/29/2024] [Indexed: 05/30/2024] Open
Abstract
Excessive fluoride intake from residential environments may affect multiple tissues and organs; however, the specific pathogenic mechanisms are unclear. Researchers have recently focused on the damaging effects of fluoride on the immune system. Damage to immune function seriously affects the quality of life of fluoride-exposed populations and increases the incidence of infections and malignant tumors. Probing the mechanism of damage to immune function caused by fluoride helps identify effective drugs and methods to prevent and treat fluorosis and improve people's living standards in fluorosis-affected areas. Here, the recent literature on the effects of fluoride on the immune system is reviewed, and research on fluoride damage to the immune system is summarized in terms of three perspectives: immune organs, immune cells, and immune-active substances. We reviewed that excessive fluoride can damage immune organs, lead to immune cells dysfunction and interfere with the expression of immune-active substances. This review aimed to provide a potential direction for future fluorosis research from the perspective of fluoride-induced immune function impairment. In order to seek the key regulatory indicators of fluoride on immune homeostasis in the future.
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Affiliation(s)
- Siqi Zhu
- Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin, Heilongjiang, China
| | - Wei Wei
- Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin, Heilongjiang, China
- Key Lab of Etiology and Epidemiology, Education Bureau of Heilongjiang Province & Ministry of Health, Harbin Medical University, Harbin, China
- Heilongjiang Provincial Key Lab of Trace Elements and Human Health Harbin Medical University, Harbin, China
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Wang M, Wang H, Lei G, Yang B, Hu T, Ye Y, Li W, Zhou Y, Yang X, Xu H. Current progress on fluoride occurrence in the soil environment: Sources, transformation, regulations and remediation. CHEMOSPHERE 2023; 341:139901. [PMID: 37659515 DOI: 10.1016/j.chemosphere.2023.139901] [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: 05/09/2023] [Revised: 08/03/2023] [Accepted: 08/19/2023] [Indexed: 09/04/2023]
Abstract
Fluorine is a halogen element widely distributed in nature, but due to excessive emissions from industrial manufacturing and agricultural production, etc., the soil is over-enriched with fluoride and the normal growth of plants is under stress, and it also poses a great threat to human health. In this review, we summarized the sources of fluoride in soil, and then analyzed the potential mechanisms of fluoride uptake in soil-plant systems. In addition, the main influences of soil ecosystems on plant fluoride uptake were discussed, soil management options to mitigate fluoride accumulation in plants were also summarized. The bioremediation techniques were found to be a developmental direction to improve fluoride pollution. Finally, we proposed other research directions, including fluoride uptake mechanisms in soil-plant systems at the molecular expression levels, development of visualization techniques for fluoride transport in plants, interactions mechanisms between soil microhabitats and plant metabolism affecting fluoride uptake, as well as combining abiotic additives, nanotechnology and biotechnology to remediate fluoride contamination problems.
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Affiliation(s)
- Minghan Wang
- College of Environment and Ecology, Hunan Agricultural University, Changsha 410128, China
| | - Haoyang Wang
- College of Environment and Ecology, Hunan Agricultural University, Changsha 410128, China
| | - Ge Lei
- College of Environment and Ecology, Hunan Agricultural University, Changsha 410128, China
| | - Biao Yang
- College of Environment and Ecology, Hunan Agricultural University, Changsha 410128, China
| | - Teng Hu
- College of Environment and Ecology, Hunan Agricultural University, Changsha 410128, China
| | - Yingying Ye
- College of Environment and Ecology, Hunan Agricultural University, Changsha 410128, China
| | - Wei Li
- School of Biology and Chemistry, Key Laboratory of Chemical Synthesis and Environmental Pollution Control-Remediation Technology of Guizhou Province, Minzu Normal University of Xingyi, Xingyi 562400, China.
| | - Yaoyu Zhou
- College of Environment and Ecology, Hunan Agricultural University, Changsha 410128, China
| | - Xiao Yang
- Key Laboratory of Land Surface Pattern and Simulation, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China
| | - Huaqin Xu
- College of Environment and Ecology, Hunan Agricultural University, Changsha 410128, China.
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Kampouri M, Gustin K, Stråvik M, Barman M, Sandin A, Sandberg AS, Wold AE, Vahter M, Kippler M. Associations of gestational and early-life exposure to toxic metals and fluoride with a diagnosis of food allergy or atopic eczema at 1 year of age. ENVIRONMENT INTERNATIONAL 2023; 178:108071. [PMID: 37422976 DOI: 10.1016/j.envint.2023.108071] [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: 03/04/2023] [Revised: 06/26/2023] [Accepted: 06/26/2023] [Indexed: 07/11/2023]
Abstract
Studies have indicated that early-life exposure to toxic metals and fluoride affects the immune system, but evidence regarding their role in allergic disease development is scarce. We aimed to evaluate the relations of exposure to such compounds in 482 pregnant women and their infants (4 months of age) with food allergy and atopic eczema diagnosed by a paediatric allergologist at 1 year of age within the Swedish birth-cohort NICE (Nutritional impact on Immunological maturation during Childhood in relation to the Environment). Urinary cadmium and erythrocyte cadmium, lead, and mercury concentrations were measured by inductively coupled plasma mass spectrometry (ICP-MS), urinary inorganic arsenic metabolites by ICP-MS after separation by ion exchange chromatography, and urinary fluoride by an ion-selective electrode. The prevalence of food allergy and atopic eczema was 8 and 7%, respectively. Gestational urinary cadmium, reflecting chronic exposure, was associated with increased odds of infant food allergy (OR [95% CI]: 1.34 [1.09, 1.66] per IQR [0.08 μg/L]). Both gestational and infant urinary fluoride were associated, albeit at a statistically non-significant level, with increased atopic eczema odds (1.48 [0.98, 2.25], 1.36 [0.95, 1.95], per doubling, respectively). By contrast, gestational and infant erythrocyte lead was associated with decreased odds of atopic eczema (0.48 [0.26, 0.87] per IQR [6.6 μg/kg] and 0.38 [0.16, 0.91] per IQR [5.94 μg/kg], respectively), and infant lead with decreased odds of food allergy (0.39 [0.16, 0.93] per IQR [5.94 μg/kg]). Multivariable adjustment had marginal impact on the estimates above. After additional adjustment for fish intake biomarkers, the methylmercury associated atopic-eczema odds were considerably increased (1.29 [0.80, 2.06] per IQR [1.36 μg/kg]). In conclusion, our results indicate that gestational cadmium exposure might be associated with food allergy at 1 year of age and, possibly, early-life exposure to fluoride with atopic eczema. Further prospective and mechanistic studies are needed to establish causality.
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Affiliation(s)
- Mariza Kampouri
- Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Klara Gustin
- Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Mia Stråvik
- Food and Nutrition Science, Department of Life Sciences, Chalmers University of Technology, Gothenburg, Sweden
| | - Malin Barman
- Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden; Food and Nutrition Science, Department of Life Sciences, Chalmers University of Technology, Gothenburg, Sweden
| | - Anna Sandin
- Department of Clinical Science, Pediatrics, Sunderby Research Unit, Umeå University, Sweden
| | - Ann-Sofie Sandberg
- Food and Nutrition Science, Department of Life Sciences, Chalmers University of Technology, Gothenburg, Sweden
| | - Agnes E Wold
- Institute of Biomedicine, Department of Infectious Diseases, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Marie Vahter
- Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Maria Kippler
- Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden.
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6
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Pitchai MS, Ipe DS, Hamlet S. The Effect of Titanium Surface Topography on Adherent Macrophage Integrin and Cytokine Expression. J Funct Biomater 2023; 14:jfb14040211. [PMID: 37103301 PMCID: PMC10145888 DOI: 10.3390/jfb14040211] [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: 03/02/2023] [Revised: 04/05/2023] [Accepted: 04/06/2023] [Indexed: 04/28/2023] Open
Abstract
Immunomodulatory biomaterials have the potential to stimulate an immune response able to promote constructive and functional tissue remodeling, as opposed to persistent inflammation and scar tissue formation. This study examined the effects of titanium surface modification on integrin expression and concurrent cytokine secretion by adherent macrophages in vitro in an attempt to delineate the molecular events involved in biomaterial-mediated immunomodulation. Non-polarised (M0) and inflammatory polarised (M1) macrophages were cultured on a relatively smooth (machined) titanium surface and two proprietary modified rough titanium surfaces (blasted and fluoride-modified) for 24 h. The physiochemical characteristics of the titanium surfaces were assessed by microscopy and profilometry, while macrophage integrin expression and cytokine secretion were determined using PCR and ELISA, respectively. After 24 h adhesion onto titanium, integrin α1 expression was downregulated in both M0 and M1 cells on all titanium surfaces. Expression of integrins α2, αM, β1 and β2 increased in M0 cells cultured on the machined surface only, whereas in M1 cells, expression of integrins α2, αM and β1 all increased with culture on both the machined and rough titanium surfaces. These results correlated with a cytokine secretory response whereby levels of IL-1β, IL-31 and TNF-α increased significantly in M1 cells cultured on the titanium surfaces. These results show that adherent inflammatory macrophages interact with titanium in a surface-dependent manner such that increased levels of inflammatory cytokines IL-1β, TNF-α and IL-31 secreted by M1 cells were associated with higher expression of integrins α2, αM and β1.
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Affiliation(s)
- Manju Sofia Pitchai
- School of Medicine and Dentistry, Gold Coast Campus, Griffith University, Southport, QLD 4222, Australia
| | - Deepak Samuel Ipe
- School of Medicine and Dentistry, Gold Coast Campus, Griffith University, Southport, QLD 4222, Australia
| | - Stephen Hamlet
- School of Medicine and Dentistry, Gold Coast Campus, Griffith University, Southport, QLD 4222, Australia
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Zhou J, Sun D, Wei W. Necessity to Pay Attention to the Effects of Low Fluoride on Human Health: an Overview of Skeletal and Non-skeletal Damages in Epidemiologic Investigations and Laboratory Studies. Biol Trace Elem Res 2023; 201:1627-1638. [PMID: 35661326 DOI: 10.1007/s12011-022-03302-7] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/25/2022] [Accepted: 05/26/2022] [Indexed: 12/15/2022]
Abstract
Due to the implementation of water improvement and fluoride reduction plans supported by central and local governments in recent years, areas with high fluoride exposure are being gradually decreased. Therefore, it is of practical importance to study the effect of low fluoride on human health. Epidemiologic investigations and in vivo and in vitro studies based on low fluoride have also confirmed that fluoride not only causes skeletal damage, such as dental fluorosis, but also causes non-skeletal damage involving the cardiovascular system, nervous system, hepatic and renal function, reproductive system, thyroid function, blood glucose homeostasis, and the immune system. This article summarizes the effects of low fluoride on human and animal skeletal and non-skeletal systems. A preliminary exploration of corresponding mechanisms that will help to fully understand the harm of low fluoride on human health was undertaken to provide the basis for establishing new water fluoride standards and help to implement individual guidance.
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Affiliation(s)
- Jing Zhou
- Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin, 150081, Heilongjiang Province, China
- National Health Commission, Key Laboratory of Etiology and Epidemiology, Harbin Medical University (23618504), Harbin, 150081, Heilongjiang Province, China
- Heilongjiang Provincial Key Laboratory of Trace Elements and Human Health, Harbin Medical University, 150081, Harbin, Heilongjiang Province, China
| | - Dianjun Sun
- Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin, 150081, Heilongjiang Province, China
- National Health Commission, Key Laboratory of Etiology and Epidemiology, Harbin Medical University (23618504), Harbin, 150081, Heilongjiang Province, China
- Heilongjiang Provincial Key Laboratory of Trace Elements and Human Health, Harbin Medical University, 150081, Harbin, Heilongjiang Province, China
| | - Wei Wei
- Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin, 150081, Heilongjiang Province, China.
- National Health Commission, Key Laboratory of Etiology and Epidemiology, Harbin Medical University (23618504), Harbin, 150081, Heilongjiang Province, China.
- Heilongjiang Provincial Key Laboratory of Trace Elements and Human Health, Harbin Medical University, 150081, Harbin, Heilongjiang Province, China.
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8
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Li G, Zheng X, Zhu Y, Long Y, Xia X. In-depth insights into the disruption of the microbiota-gut-blood barrier of model organism (Bombyx mori) by fluoride. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 838:156220. [PMID: 35623528 DOI: 10.1016/j.scitotenv.2022.156220] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/05/2021] [Revised: 05/19/2022] [Accepted: 05/21/2022] [Indexed: 06/15/2023]
Abstract
Fluoride is a serious health risk to animals and humans. The microbiota-gut-blood barrier (MGBB) plays an indispensable role in maintaining the systematic homeostasis of host organisms. However, the toxic effects of fluoride on MGBB of organisms have not been extensively investigated. Here, we used the silkworm interspecies model to explore the adverse effects of fluoride on the gut microbiota and intestinal tissue and circulating metabolites of organisms. Results showed that fluoride exposure significantly declined the body weight gain and survival rate of organisms and evidently damaged intestinal epithelial cells. In addition, fluoride altered the composition and abundance of intestinal microbiota, which was accompanied by changing gene expression levels of antimicrobial peptides in intestinal tissue. Shifts in the relative abundance of Enterococcus, Aquabacterium, Aureimonas and Methylobacterium in the gut had significant correlations with the concentrations of certain differential metabolites (e.g., amino acids, nucleotides, and nucleotide derivatives) in the bloodstream. Moreover, most circulating metabolites in related nucleotide metabolism pathways were upregulated, whereas those in the pathways of amino acid metabolism were downregulated. This study deepens our understanding of the disruptive effect of fluoride on the MGBB of host organisms and may provide a new insight into the preventive therapy of fluoride-induced diseases.
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Affiliation(s)
- Guannan Li
- State Key Laboratory of Silkworm Genome Biology, College of Sericulture, Textile and Biomass, Southwest University, Chongqing 400716, China
| | - Xi Zheng
- State Key Laboratory of Silkworm Genome Biology, College of Sericulture, Textile and Biomass, Southwest University, Chongqing 400716, China
| | - Yong Zhu
- State Key Laboratory of Silkworm Genome Biology, College of Sericulture, Textile and Biomass, Southwest University, Chongqing 400716, China
| | - Yaohang Long
- Key Laboratory of Biology and Medical Engineering, Immune Cells and Antibody Engineering Research Center of Guizhou Province, School of Biology and Engineering, Guizhou Medical University, Guiyang 550025, Guizhou Province, China; Engineering Research Center of Medical Biotechnology, Guizhou Medical University, Guiyang 550025, Guizhou Province, China.
| | - Xuejuan Xia
- School of Health Science and Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China.
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Zhao S, Guo J, Xue H, Meng J, Xie D, Liu X, Yu Q, Zhong H, Jiang P. Systematic impacts of fluoride exposure on the metabolomics of rats. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2022; 242:113888. [PMID: 35872488 DOI: 10.1016/j.ecoenv.2022.113888] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/24/2022] [Revised: 07/09/2022] [Accepted: 07/14/2022] [Indexed: 06/15/2023]
Abstract
Fluoride is widely present in the environment. Excessive fluoride exposure leads to fluorosis, which has become a global public health problem and will cause damage to various organs and tissues. Only a few studies focus on serum metabolomics, and there is still a lack of systematic metabolomics associated with fluorosis within the main organs. Therefore, in the current study, a non-targeted metabolomics method using gas chromatography-mass spectrometry (GC-MS) was used to research the effects of fluoride exposure on metabolites in different organs, to uncover potential biomarkers and study whether the affected metabolic pathways are related to the mechanism of fluorosis. Male Sprague-Dawley rats were randomly divided into two groups: a control group and a fluoride exposure group. GC-MS technology was used to identify metabolites. Multivariate statistical analysis identified 16, 24, 20, 20, 24, 13, 7, and 13 differential metabolites in the serum, liver, kidney, heart, hippocampus, cortex, kidney fat, and brown fat, respectively, in the two groups of rats. Fifteen metabolic pathways were affected, involving toxic mechanisms such as oxidative stress, mitochondrial damage, inflammation, and fatty acid, amino acid and energy metabolism disorders. This study provides a new perspective on the understanding of the mechanism of toxicity associated with sodium fluoride, contributing to the prevention and treatment of fluorosis.
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Affiliation(s)
- Shiyuan Zhao
- Translational pharmaceutical laboratory of Jining First People's Hospital, Jining Medical University, Jining 272000, China.
| | - Jinxiu Guo
- Translational pharmaceutical laboratory of Jining First People's Hospital, Jining Medical University, Jining 272000, China.
| | - Hongjia Xue
- Faculty of Science and Engineering, University of Nottingham Ningbo China, Ningbo 315100, China.
| | - Junjun Meng
- Translational pharmaceutical laboratory of Jining First People's Hospital, Jining Medical University, Jining 272000, China.
| | - Dadi Xie
- Department of Endocrinology, Tengzhou Central People's Hospital, Tengzhou 277500, China.
| | - Xi Liu
- Department of Pharmacy, Linfen People's Hospital, Linfen 041000, China.
| | - Qingqing Yu
- Department of Oncology, Jining First People's Hospital, Jining Medical University, Jining 272000, China; Laboratory of Biochemistry and Biomedical Materials, College of Marine Life Science, Ocean University of China, Qingdao 266003, China.
| | - Haitao Zhong
- Translational pharmaceutical laboratory of Jining First People's Hospital, Jining Medical University, Jining 272000, China.
| | - Pei Jiang
- Translational pharmaceutical laboratory of Jining First People's Hospital, Jining Medical University, Jining 272000, China.
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Thakuri A, Acharya R, Banerjee M, Chatterjee A. A polydiacetylene (PDA) impregnated poly(vinylidene fluoride) (PVDF) membrane for sensitive detection of fluoride ions. Analyst 2022; 147:3604-3611. [DOI: 10.1039/d2an00848c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We have developed a polydiacetylene (PDA) grafted poly(vinylidene fluoride) (PVDF) membrane for sensitive solid-phase detection of fluoride. The method was successfully used for water and toothpaste analysis and validated by ion chromatography.
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Affiliation(s)
- Ankit Thakuri
- Department of Chemistry, BITS-Pilani, K.K. Birla Goa Campus, NH 17B, Bypass Road, Zuarinagar, Sancoale, Goa-403726, India
| | - Raghunath Acharya
- Radiochemistry Division, Bhabha Atomic Research Centre, Trombay, Mumbai-400085, India
- Homi Bhabha National Institute, Anushaktinagar, Mumbai-400085, India
| | - Mainak Banerjee
- Department of Chemistry, BITS-Pilani, K.K. Birla Goa Campus, NH 17B, Bypass Road, Zuarinagar, Sancoale, Goa-403726, India
| | - Amrita Chatterjee
- Department of Chemistry, BITS-Pilani, K.K. Birla Goa Campus, NH 17B, Bypass Road, Zuarinagar, Sancoale, Goa-403726, India
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11
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Host-pathogen interaction between macrophage co-cultures with Staphylococcus aureus biofilms. Eur J Clin Microbiol Infect Dis 2021; 40:2563-2574. [PMID: 34312744 DOI: 10.1007/s10096-021-04306-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2021] [Accepted: 07/05/2021] [Indexed: 10/20/2022]
Abstract
The ability of Staphylococcus aureus to form biofilms is an important virulence factor. During the infectious process, the interaction between biofilms and immune cells is determinant; however, the properties that make biofilms resistant to the immune system are not well characterized. In order to better understand this, we evaluated the in vitro interaction of macrophages during the early stages of S. aureus biofilm formation. Biofilm formation was evaluated by crystal violet staining, light microscopy, and confocal scanning laser microscopy. Furthermore, different activation on L-arginine pathways such as nitric oxide (NO•) release and the arginase, the production of reactive oxygen species (ROS), the total oxidative stress response (OSR), and levels of cytokine liberation, were determined. Our findings show that the interaction between biofilms and macrophages results in stimuli for catabolism of L-arginine via arginase, but not for NO•, an increase of ROS production, and activation of the non-enzymatic OSR. We also observed the production of IL-6, but not of TNFα o IL-10 in these co-cultures. These results contribute to a better understanding of host-pathogen interactions and suggest that biofilms increase resistance against immune cell mechanisms, a phenomenon that could contribute to the ability of S. aureus biofilms to establish mature biofilms.
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12
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Chen M, Hu J, Zhang E, Hu J, Wang X, Qin G. The osteoimmunomodulatory effect of nanostructured TiF x/TiO xcoating on osteogenesis induction. Biomed Mater 2021; 16. [PMID: 34087809 DOI: 10.1088/1748-605x/ac0863] [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: 04/01/2021] [Accepted: 06/04/2021] [Indexed: 11/12/2022]
Abstract
Macrophages play a central role in the host response and the integration of implant materials. The nanostructured TiFx/TiOxcoating (FOTi) on titanium surfaces has shown multiple properties, including antibacterial properties and bioactivity. However, little is known about the effects of these coatings on the regulation of macrophage activity and the subsequent immunomodulatory effects on osteogenesis. In this study, the behavior of macrophages on the FOTi samples was evaluated, and conditioned medium was collected and used to stimulate MC3T3-E1 cellsin vitro. The results showed that the FOTi samples stimulated macrophage elongation and promoted the production of proinflammatory cytokines at 24 h, while induced macrophage polarization to the anti-inflammatory M2 phenotype at 72 h. Furthermore, the immune microenvironment generated by macrophage/ FOTi samples interactions effectively promoted the osteogenic differentiation of MC3T3-E1 cells, as evidenced by improved cell adhesion, enhanced alkaline phosphatase activity and extracellular matrix mineralization, and upregulated osteogenesis-related gene expression. In summary, the FOTi samples mediated macrophage phenotype behaviors and induced beneficial immunomodulatory effects on osteogenesis, which could be a potential strategy for the surface modification of bone biomaterials.
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Affiliation(s)
- Mian Chen
- Jiangxi Key Laboratory of Nanobiomaterials, Institute of Advanced Materials, East China Jiaotong University, Nanchang 330013, People's Republic of China
| | - Jian Hu
- Jiangxi Key Laboratory of Nanobiomaterials, Institute of Advanced Materials, East China Jiaotong University, Nanchang 330013, People's Republic of China
| | - Erlin Zhang
- Key Laboratory for Anisotropy and Texture of Materials (ATM), Ministry of Education (MoE), School of Material Science and Engineering, Northeastern University, Shenyang 110819, People's Republic of China
| | - Jiali Hu
- Key Laboratory for Anisotropy and Texture of Materials (ATM), Ministry of Education (MoE), School of Material Science and Engineering, Northeastern University, Shenyang 110819, People's Republic of China
| | - Xiaoyan Wang
- School of Metallurgy, Northeastern University, Shenyang 110819, People's Republic of China
| | - Gaowu Qin
- Key Laboratory for Anisotropy and Texture of Materials (ATM), Ministry of Education (MoE), School of Material Science and Engineering, Northeastern University, Shenyang 110819, People's Republic of China
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13
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Miyata Y, Mukae Y, Harada J, Matsuda T, Mitsunari K, Matsuo T, Ohba K, Sakai H. Pathological and Pharmacological Roles of Mitochondrial Reactive Oxygen Species in Malignant Neoplasms: Therapies Involving Chemical Compounds, Natural Products, and Photosensitizers. Molecules 2020; 25:E5252. [PMID: 33187225 PMCID: PMC7697499 DOI: 10.3390/molecules25225252] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2020] [Revised: 11/07/2020] [Accepted: 11/09/2020] [Indexed: 12/14/2022] Open
Abstract
Oxidative stress plays an important role in cellular processes. Consequently, oxidative stress also affects etiology, progression, and response to therapeutics in various pathological conditions including malignant tumors. Oxidative stress and associated outcomes are often brought about by excessive generation of reactive oxygen species (ROS). Accumulation of ROS occurs due to dysregulation of homeostasis in an otherwise strictly controlled physiological condition. In fact, intracellular ROS levels are closely associated with the pathological status and outcome of numerous diseases. Notably, mitochondria are recognized as the critical regulator and primary source of ROS. Damage to mitochondria increases mitochondrial ROS (mROS) production, which leads to an increased level of total intracellular ROS. However, intracellular ROS level may not always reflect mROS levels, as ROS is not only produced by mitochondria but also by other organelles such as endoplasmic reticulum and peroxisomes. Thus, an evaluation of mROS would help us to recognize the biological and pathological characteristics and predictive markers of malignant tumors and develop efficient treatment strategies. In this review, we describe the pathological significance of mROS in malignant neoplasms. In particular, we show the association of mROS-related signaling in the molecular mechanisms of chemically synthesized and natural chemotherapeutic agents and photodynamic therapy.
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Affiliation(s)
- Yasuyoshi Miyata
- Department of Urology, Nagasaki University Graduate School of Biomedical Sciences, 1-7-1 Sakamoto, Nagasaki 852-8501, Japan; (Y.M.); (J.H.); (T.M.); (K.M.); (T.M.); (K.O.); (H.S.)
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14
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Cao J, Feng C, Xie L, Li L, Chen J, Yun S, Guo W, Wang T, Wu Y, Meng R, Wang G, He X, Luo Y. Sesamin attenuates histological alterations, oxidative stress and expressions of immune-related genes in liver of zebrafish (Danio rerio) exposed to fluoride. FISH & SHELLFISH IMMUNOLOGY 2020; 106:715-723. [PMID: 32860904 DOI: 10.1016/j.fsi.2020.08.039] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/08/2020] [Revised: 08/01/2020] [Accepted: 08/21/2020] [Indexed: 06/11/2023]
Abstract
Sesamin is the main lignan in sesame and is reported to have many benefits and medicinal properties. However, its protective effects against fluoride-induced damage in the liver of zebrafish have not been elucidated. Our previous studies found that fluoride exposure caused damage to the liver of zebrafish. In the study, the effects of sesamin on oxidative stress and immune damage in liver of zebrafish exposed to fluoride were measured. The results indicated that fluoride exposure damaged the microstructures of liver, increased significantly the oxidative stress, decreased remarkably the activities of ACP, AKP, and LZM, and affected obviously the expressions of immune-related genes. Treatment with sesamin remarkably attenuated fluoride-induced liver damage in a dose-dependent manner, indicated by the histopathological observation. Furthermore, sesamin treatment also significantly inhibited the production of ROS and oxidative stress, such as the decrease of lipid peroxidation level and the increase of CAT and SOD activities in liver. Sesamin treatment reversed the activities of immune-related enzymes and the expressions of immune-related genes in liver exposed to fluoride. These findings suggested that sesamin could protect the liver from fluoride-induced immune damage by oxidative stress downstream-mediated changes in reversing the activities of immune-related enzymes and the expressions of immune-related genes. Taken together, sesamin plays an important role in maintaining hepatic health and preventing liver from toxic damage caused by fluoride.
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Affiliation(s)
- Jinling Cao
- College of Food Science and Technology, Shanxi Agricultural University, Taigu, 030801, Shanxi, China.
| | - Cuiping Feng
- College of Food Science and Technology, Shanxi Agricultural University, Taigu, 030801, Shanxi, China
| | - Lingtian Xie
- SCNU Environmental Research Institute, Guangdong Provincial Key Laboratory of Chemical Pollution and Environmental Safety & MOE Key Laboratory of Environmental Theoretical Chemistry, South China Normal University, Guangzhou, 510006, China
| | - Lijuan Li
- College of Information, Shanxi Agricultural University, Taigu, 030801, Shanxi, China
| | - Jianjie Chen
- College of Veterinary Medicine, Shanxi Agricultural University, Taigu, Shanxi, 030801, China
| | - Shaojun Yun
- College of Food Science and Technology, Shanxi Agricultural University, Taigu, 030801, Shanxi, China
| | - Wenjing Guo
- College of Veterinary Medicine, Shanxi Agricultural University, Taigu, Shanxi, 030801, China
| | - Tianyu Wang
- College of Veterinary Medicine, Shanxi Agricultural University, Taigu, Shanxi, 030801, China
| | - Yijie Wu
- College of Veterinary Medicine, Shanxi Agricultural University, Taigu, Shanxi, 030801, China
| | - Rui Meng
- College of Veterinary Medicine, Shanxi Agricultural University, Taigu, Shanxi, 030801, China
| | - Guodong Wang
- College of Veterinary Medicine, Shanxi Agricultural University, Taigu, Shanxi, 030801, China
| | - Xinjing He
- College of Veterinary Medicine, Shanxi Agricultural University, Taigu, Shanxi, 030801, China
| | - Yongju Luo
- Guangxi Key Laboratory of Aquatic Genetic Breeding and Healthy Aquaculture, Guangxi Academy of Fishery Science, Nanning, 530021, Guangxi, China.
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15
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Akimov OY, Kostenko VO. Role of NF-κB transcriptional factor activation during chronic fluoride intoxication in development of oxidative-nitrosative stress in rat's gastric mucosa. J Trace Elem Med Biol 2020; 61:126535. [PMID: 32344277 DOI: 10.1016/j.jtemb.2020.126535] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/01/2019] [Revised: 04/07/2020] [Accepted: 04/14/2020] [Indexed: 11/19/2022]
Abstract
Fluoride compounds are known as hazardous environmental pollutants that can enter the body with drinking water. Chronic exposure to fluoride leads to development of oxidative stress and can lead to activation of nuclear factor κB (NF-κB). The aim of this work is to clarify the role of NF-kB activation in production of reactive nitrogen and oxygen species, activity of antioxidant enzymes and intensity of lipid peroxidation (LPO) in gastric mucosa of rats during chronic fluoride intoxication. MATERIALS AND METHODS We carried out the study on 18 mature male rats of the Wistar line. The animals were divided into 3 groups: control animals (6), group of chronic fluoride intoxication (6), and animals (6), which received the NF-κB inhibitor, namely ammonium pyrrolidine dithiocarbamate (PDTC) in a dose of 76 mg / kg (iNF-κB group) during modeling of chronic fluoride intoxication. To assess the development of oxidative stress we studied superoxide production (O2-), activity of superoxide dismutase (SOD), catalase (CAT) and concentration of free malondialdehyde (MDA). We also assessed NO production and concentration of its metabolites (peroxynitrite, nitrosilated thiol groups, nitrites). RESULTS Chronic fluoride intoxication leads to NO hyperproduction with subsequent increase in concentration of its later metabolites (peroxynitrite, nitrosilated thiol groups, nitrites). Production of O2- increases, SOD activity decreases, CAT activity increases and MDA concentration also increases. Inhibition of NF-kB activation by PDTC normalizes the parameters studied. CONCLUSIONS Activation of NF-κB during chronic fluoride intoxication leads to the development of hyperproduction of NO and development of oxidative-nitrosative stress.
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Affiliation(s)
- O Ye Akimov
- Ukrainian Medical Stomatological Academy, Department of Pathophysiology, Poltava, Ukraine.
| | - V O Kostenko
- Ukrainian Medical Stomatological Academy, Department of Pathophysiology, Poltava, Ukraine
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16
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Wang HW, Miao CY, Liu J, Zhang Y, Zhu SQ, Zhou BH. Fluoride-induced rectal barrier damage and microflora disorder in mice. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2020; 27:7596-7607. [PMID: 31885060 DOI: 10.1007/s11356-019-07201-8] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/25/2019] [Accepted: 11/27/2019] [Indexed: 06/10/2023]
Abstract
Intestinal microflora plays a key role in maintaining the homeostasis between immune and host health. Here, we reported the fluoride-induced changes of rectal structure and microflora in mice. The morphology of rectal tissue was observed by hematoxylin and eosin staining. The rectal development parameters (the thickness of mucosa, intestinal gland and muscle layer) were evaluated. The proliferation of rectal epithelial cells was evaluated via BrdU labeling. The distribution of goblet, glycoprotein and mast cell were evaluated by specific staining. Rectal microflora was detected using 16S rRNA high-throughput sequencing. The results showed that the rectal structure was seriously damaged and the proliferation of rectal epithelial cells was significantly inhibited by fluoride. The distribution of goblet cells, glycoprotein and mast cells decreased significantly after fluoride exposure. The relative richness of microfloras was changed after fluoride treatment, such as increased Bacteroidetes and decreased Firmicutes. In summary, this study indicated that excessive fluoride damages the intestinal structure, disturbs the intestinal micro-ecology and causes intestinal microflora disorder in mice. Findings mentioned in the present study enrich a new scope for elucidating fluoride toxicity from intestinal homeostasis.
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Affiliation(s)
- Hong-Wei Wang
- Henan Key Laboratory of Environmental and Animal Product Safety, Henan University of Science and Technology, Kaiyuan Avenue 263, Luoyang, 471000, Henan, People's Republic of China
| | - Cheng-Yi Miao
- Henan Key Laboratory of Environmental and Animal Product Safety, Henan University of Science and Technology, Kaiyuan Avenue 263, Luoyang, 471000, Henan, People's Republic of China
| | - Jing Liu
- Henan Key Laboratory of Environmental and Animal Product Safety, Henan University of Science and Technology, Kaiyuan Avenue 263, Luoyang, 471000, Henan, People's Republic of China
| | - Yan Zhang
- Henan Key Laboratory of Environmental and Animal Product Safety, Henan University of Science and Technology, Kaiyuan Avenue 263, Luoyang, 471000, Henan, People's Republic of China
| | - Shi-Quan Zhu
- Henan Key Laboratory of Environmental and Animal Product Safety, Henan University of Science and Technology, Kaiyuan Avenue 263, Luoyang, 471000, Henan, People's Republic of China
| | - Bian-Hua Zhou
- Henan Key Laboratory of Environmental and Animal Product Safety, Henan University of Science and Technology, Kaiyuan Avenue 263, Luoyang, 471000, Henan, People's Republic of China.
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17
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Wang JJ, Wei ZK, Han Z, Liu ZY, Zhang Y, Zhu XY, Li XW, Wang K, Yang ZT. Sodium fluoride exposure triggered the formation of neutrophil extracellular traps. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2020; 257:113583. [PMID: 31780361 DOI: 10.1016/j.envpol.2019.113583] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/10/2019] [Revised: 10/15/2019] [Accepted: 11/04/2019] [Indexed: 06/10/2023]
Abstract
In recent years, numerous studies paid more attention to the molecular mechanisms associated with fluoride toxicity. However, the detailed mechanisms of fluoride immunotoxicity in bovine neutrophils remain unclear. Neutrophil extracellular traps (NETs) is a novel immune mechanism of neutrophils. We hypothesized that sodium fluoride (NaF) can trigger NETs activation and release, and investigate the related molecular mechanisms during the process. We exposed peripheral blood neutrophils to 1 mM NaF for 120 min in bovine neutrophils. The results showed that NaF exposure triggered NET-like structures decorated with histones and granule proteins. Quantitative measurement of NETs content correlated positively with the concentration of NaF. Mechanistically, NaF exposure increased reactive oxygen species (ROS) levels and phosphorylation levels of ERK, p38, whereas inhibiting the activities of superoxide dismutase (SOD) and catalase (CAT) compared with control neutrophils. NETs formation is induced by NaF and this effect was inhibited by the inhibitors diphenyleneiodonium chloride (DPI), U0126 and SB202190. Our findings described the potential importance of NaF-triggered NETs related molecules, which might help to extend the current understanding of NaF immunotoxicity.
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Affiliation(s)
- Jing-Jing Wang
- College of Life Science and Engineering, Foshan University, Foshan, Guangdong 528231, People's Republic of China; College of Veterinary Medicine, Jilin University, Jilin, Changchun 130062, People's Republic of China
| | - Zheng-Kai Wei
- College of Life Science and Engineering, Foshan University, Foshan, Guangdong 528231, People's Republic of China
| | - Zhen Han
- College of Veterinary Medicine, Jilin University, Jilin, Changchun 130062, People's Republic of China
| | - Zi-Yi Liu
- College of Veterinary Medicine, Jilin University, Jilin, Changchun 130062, People's Republic of China
| | - Yong Zhang
- College of Veterinary Medicine, Jilin University, Jilin, Changchun 130062, People's Republic of China
| | - Xing-Yi Zhu
- College of Life Science and Engineering, Foshan University, Foshan, Guangdong 528231, People's Republic of China
| | - Xiao-Wen Li
- College of Life Science and Engineering, Foshan University, Foshan, Guangdong 528231, People's Republic of China
| | - Kai Wang
- College of Life Science and Engineering, Foshan University, Foshan, Guangdong 528231, People's Republic of China
| | - Zheng-Tao Yang
- College of Life Science and Engineering, Foshan University, Foshan, Guangdong 528231, People's Republic of China.
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18
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Kuang P, Guo H, Deng H, Cui H, Fang J, Zuo Z, Deng J, Li Y, Wang X, Zhao L. Sodium fluoride impairs splenic innate immunity via inactivation of TLR2/MyD88 signaling pathway in mice. CHEMOSPHERE 2019; 237:124437. [PMID: 31356994 DOI: 10.1016/j.chemosphere.2019.124437] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/10/2019] [Revised: 07/04/2019] [Accepted: 07/22/2019] [Indexed: 06/10/2023]
Abstract
Fluoride is known to affect the inflammatory process and autoregulation of immune responses, but the molecular mechanism by which fluoride causes innate immune injury remain largely unknown. Also, studies on sodium fluoride (NaF)-caused alteration of TLR signaling are still lacking. In the present study, we examined the effects of NaF on the mRNA and protein expression levels of TLR2/MyD88 signaling pathway molecules in the mouse spleen by using the methods of qRT-PCR and Western blotting. Consequently, we elucidated the mechanism underlying the effects of NaF on innate immunity. Two hundred and forty ICR mice were randomly divided into 4 groups with intragastric administration of distilled water in the control group and 12, 24, 48 mg/kg of NaF treatment in the experiment groups for 42 days. The findings revealed that NaF impaired splenic innate immunity in mice via inactivation of TLR2/MyD88 signaling pathway. NaF-inactivated TLR2/MyD88 signaling pathway was identified by prominently downregulated mRNA and protein expression levels of TLR2/MyD88, IRAK4, IRAK1, TRAF6, TAK1, MKK4/MKK7 and c-Jun, which ultimately altered the expression levels of IL-1β, IL-4, IL-6 and IL-8 to attenuate innate immunity.
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Affiliation(s)
- Ping Kuang
- College of Veterinary Medicine, Sichuan Agricultural University, Wenjiang, Chengdu, 611130, China
| | - Hongrui Guo
- College of Veterinary Medicine, Sichuan Agricultural University, Wenjiang, Chengdu, 611130, China; Key Laboratory of Animal Diseases and Environmental Hazards of Sichuan Province, Sichuan Agricultural University, Wenjiang, Chengdu, 611130, China
| | - Huidan Deng
- College of Veterinary Medicine, Sichuan Agricultural University, Wenjiang, Chengdu, 611130, China
| | - Hengmin Cui
- College of Veterinary Medicine, Sichuan Agricultural University, Wenjiang, Chengdu, 611130, China; Key Laboratory of Animal Diseases and Environmental Hazards of Sichuan Province, Sichuan Agricultural University, Wenjiang, Chengdu, 611130, China; Key Laboratory of Agricultural Information Engineering of Sichuan Province, Sichuan Agricultural University, Yaan, Sichuan, 625014, China.
| | - Jing Fang
- College of Veterinary Medicine, Sichuan Agricultural University, Wenjiang, Chengdu, 611130, China; Key Laboratory of Animal Diseases and Environmental Hazards of Sichuan Province, Sichuan Agricultural University, Wenjiang, Chengdu, 611130, China
| | - Zhicai Zuo
- College of Veterinary Medicine, Sichuan Agricultural University, Wenjiang, Chengdu, 611130, China; Key Laboratory of Animal Diseases and Environmental Hazards of Sichuan Province, Sichuan Agricultural University, Wenjiang, Chengdu, 611130, China
| | - Junliang Deng
- College of Veterinary Medicine, Sichuan Agricultural University, Wenjiang, Chengdu, 611130, China; Key Laboratory of Animal Diseases and Environmental Hazards of Sichuan Province, Sichuan Agricultural University, Wenjiang, Chengdu, 611130, China
| | - Yinglun Li
- College of Veterinary Medicine, Sichuan Agricultural University, Wenjiang, Chengdu, 611130, China; Key Laboratory of Animal Diseases and Environmental Hazards of Sichuan Province, Sichuan Agricultural University, Wenjiang, Chengdu, 611130, China
| | - Xun Wang
- College of Veterinary Medicine, Sichuan Agricultural University, Wenjiang, Chengdu, 611130, China; Key Laboratory of Animal Diseases and Environmental Hazards of Sichuan Province, Sichuan Agricultural University, Wenjiang, Chengdu, 611130, China
| | - Ling Zhao
- College of Veterinary Medicine, Sichuan Agricultural University, Wenjiang, Chengdu, 611130, China; Key Laboratory of Animal Diseases and Environmental Hazards of Sichuan Province, Sichuan Agricultural University, Wenjiang, Chengdu, 611130, China
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19
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Wei W, Pang S, Fu X, Tan S, Wang Q, Wang S, Sun D. The role of PERK and IRE1 signaling pathways in excessive fluoride mediated impairment of lymphocytes in rats' spleen in vivo and in vitro. CHEMOSPHERE 2019; 223:1-11. [PMID: 30763911 DOI: 10.1016/j.chemosphere.2019.02.031] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/04/2019] [Revised: 02/07/2019] [Accepted: 02/07/2019] [Indexed: 06/09/2023]
Abstract
Fluoride is capable of inducing immunotoxicity, but its molecular mechanisms remain elusive. This study aimed to explore the roles of Protein kinase receptor-like ER kinase (PERK) and inositol requiring enzyme 1 (IRE1) signaling pathways in excessive fluoride-induced immunotoxicity, focusing on the regulatory roles of these two pathways in cell division and apoptosis. Firstly, we assessed the changes in cell division and apoptosis in rats exposed to 0, 50, or 100 mg/L fluoride, and detected the expression of PERK and IRE1 signaling-related proteins in spleen. Additionally, to validate the role of these two pathways, we evaluated the changes in cell division and apoptosis of primary lymphocytes from rat's spleen to 4 mM fluoride after knockdown of PERK and IRE1 in vitro. In vivo results confirmed that fluoride inhibited cell division, promoted the apoptosis and resulted in histological and ultrastructural abnormalities of rat spleen. In addition, fluoride induced activation of the PERK and IRE1 signalings and the associated apoptosis. Moreover, the in vitro results further verified the findings in vivo that fluoride activated these two signalings in B lymphocytes. Importantly, after knockdown of PERK and IRE1 in lymphocytes, the cell division ability was restored, and apoptosis decreased in fluoride-treated lymphocytes; the results correlated well with the expression of PERK and IRE1 signaling-related proteins, thus confirming the pivotal role of these pathways in immunosuppression by excessive fluoride. This study indicates that the mechanisms underlying the deleterious effects of fluoride on immune system are related to activation of the PERK and IRE1 signaling pathways.
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Affiliation(s)
- Wei Wei
- Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin, Heilongjiang, 150081, China; Key Lab of Etiology and Epidemiology, Education Bureau of Heilongjiang Province & Ministry of Health (23618504), Harbin, Heilongjiang, 150081, China; Institution of Environmentally Related Diseases, Harbin Medical University, Harbin, Heilongjiang, 150081, China
| | - Shujuan Pang
- Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin, Heilongjiang, 150081, China
| | - Xiaoyan Fu
- Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin, Heilongjiang, 150081, China; Key Lab of Etiology and Epidemiology, Education Bureau of Heilongjiang Province & Ministry of Health (23618504), Harbin, Heilongjiang, 150081, China; Institution of Environmentally Related Diseases, Harbin Medical University, Harbin, Heilongjiang, 150081, China
| | - Shiwen Tan
- Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin, Heilongjiang, 150081, China
| | - Qian Wang
- Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin, Heilongjiang, 150081, China
| | - Shize Wang
- Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin, Heilongjiang, 150081, China
| | - Dianjun Sun
- Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin, Heilongjiang, 150081, China; Key Lab of Etiology and Epidemiology, Education Bureau of Heilongjiang Province & Ministry of Health (23618504), Harbin, Heilongjiang, 150081, China; Institution of Environmentally Related Diseases, Harbin Medical University, Harbin, Heilongjiang, 150081, China.
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20
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Influence of Acetylcholinesterase Inhibitors Used in Alzheimer's Disease Treatment on the Activity of Antioxidant Enzymes and the Concentration of Glutathione in THP-1 Macrophages under Fluoride-Induced Oxidative Stress. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2018; 16:ijerph16010010. [PMID: 30577562 PMCID: PMC6339019 DOI: 10.3390/ijerph16010010] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/08/2018] [Revised: 12/09/2018] [Accepted: 12/17/2018] [Indexed: 01/03/2023]
Abstract
It has been reported that donepezil and rivastigmine, the acetylcholinesterase (AchE) inhibitors commonly used in the treatment of Alzheimer’s disease (AD), do not only inhibit AChE but also have antioxidant properties. As oxidative stress is involved in AD pathogenesis, in our study we attempted to examine the influence of donepezil and rivastigmine on the activity of antioxidant enzymes and glutathione concentration in macrophages—an important source of reactive oxygen species and crucial for oxidative stress progression. The macrophages were exposed to sodium fluoride induced oxidative stress. The antioxidant enzymes activity and concentration of glutathione were measured spectrophotometrically. The generation of reactive oxygen species was visualized by confocal microscopy. The results of our study showed that donepezil and rivastigmine had a stimulating effect on catalase activity. However, when exposed to fluoride-induced oxidative stress, the drugs reduced the activity of some antioxidant enzymes (Cat, SOD, GR). These observations suggest that the fluoride-induced oxidative stress may suppress the antioxidant action of AChE inhibitors. Our results may have significance in the clinical practice of treatment of AD and other dementia diseases.
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21
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Wu S, Xia B, Mai S, Feng Z, Wang X, Liu Y, Liu R, Li Z, Xiao Y, Chen Z, Chen Z. Sodium Fluoride under Dose Range of 2.4–24 μM, a Promising Osteoimmunomodulatory Agent for Vascularized Bone Formation. ACS Biomater Sci Eng 2018; 5:817-830. [PMID: 33405842 DOI: 10.1021/acsbiomaterials.8b00570] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Shiyu Wu
- Guanghua School of Stomatology, Hospital of Stomatology, Sun Yat-sen University and Guangdong Provincial Key Laboratory of Stomatology, Guangzhou 510055, P. R. China
| | - Binbin Xia
- Guanghua School of Stomatology, Hospital of Stomatology, Sun Yat-sen University and Guangdong Provincial Key Laboratory of Stomatology, Guangzhou 510055, P. R. China
| | - Sui Mai
- Guanghua School of Stomatology, Hospital of Stomatology, Sun Yat-sen University and Guangdong Provincial Key Laboratory of Stomatology, Guangzhou 510055, P. R. China
| | - Zhicai Feng
- Guanghua School of Stomatology, Hospital of Stomatology, Sun Yat-sen University and Guangdong Provincial Key Laboratory of Stomatology, Guangzhou 510055, P. R. China
| | - Xiaoshuang Wang
- Guanghua School of Stomatology, Hospital of Stomatology, Sun Yat-sen University and Guangdong Provincial Key Laboratory of Stomatology, Guangzhou 510055, P. R. China
| | - Yudong Liu
- Guanghua School of Stomatology, Hospital of Stomatology, Sun Yat-sen University and Guangdong Provincial Key Laboratory of Stomatology, Guangzhou 510055, P. R. China
| | - Runheng Liu
- Guanghua School of Stomatology, Hospital of Stomatology, Sun Yat-sen University and Guangdong Provincial Key Laboratory of Stomatology, Guangzhou 510055, P. R. China
| | - Zhipeng Li
- Guanghua School of Stomatology, Hospital of Stomatology, Sun Yat-sen University and Guangdong Provincial Key Laboratory of Stomatology, Guangzhou 510055, P. R. China
| | - Yin Xiao
- Guanghua School of Stomatology, Hospital of Stomatology, Sun Yat-sen University and Guangdong Provincial Key Laboratory of Stomatology, Guangzhou 510055, P. R. China
- Institute of Health and Biomedical Innovation, Queensland University of Technology, 60 Musk Avenue, Kelvin Grove, Brisbane, Queensland 4059, Australia
| | - Zhuofan Chen
- Guanghua School of Stomatology, Hospital of Stomatology, Sun Yat-sen University and Guangdong Provincial Key Laboratory of Stomatology, Guangzhou 510055, P. R. China
| | - Zetao Chen
- Guanghua School of Stomatology, Hospital of Stomatology, Sun Yat-sen University and Guangdong Provincial Key Laboratory of Stomatology, Guangzhou 510055, P. R. China
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22
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Goschorska M, Baranowska-Bosiacka I, Gutowska I, Tarnowski M, Piotrowska K, Metryka E, Safranow K, Chlubek D. Effect of acetylcholinesterase inhibitors donepezil and rivastigmine on the activity and expression of cyclooxygenases in a model of the inflammatory action of fluoride on macrophages obtained from THP-1 monocytes. Toxicology 2018; 406-407:9-20. [PMID: 29777723 DOI: 10.1016/j.tox.2018.05.007] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2018] [Revised: 05/09/2018] [Accepted: 05/11/2018] [Indexed: 12/31/2022]
Abstract
Inflammation is an important factor in the development of many diseases of the central nervous system, including Alzheimer's disease and other types of dementia. Given that acetylcholinesterase inhibitors are also currently believed to have anti-inflammatory properties, the purpose of this study was to investigate the effect of acetylcholinesterase inhibitors (rivastigmine, donepezil) on cyclooxygenase activity and expression using the proinflammatory action of fluoride (F-) on cultured macrophages obtained from THP-1 monocytes. COX-1 and COX-2 activity was determined through measurement of the products of prostaglandin E2 (PGE2) and thromboxane B2 (TXB2) in cell culture supernatants. Expression of COX-1 and COX-2 proteins was examined immunocytochemically, and mRNA expression was determined by qRT PCR. Our study confirmed the inhibitory effects of donepezil and rivastigmine on the production of PGE2, TXB2, COX-1 and COX-2 mRNA and protein expression in macrophages. We also demonstrated that the pro-inflammatory effect of fluoride may be reduced by the use of both drugs. The additive effect of these drugs cannot be ruled out, and effects other than those observed in the use of one drug should also be taken into account.
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Affiliation(s)
- Marta Goschorska
- Department of Biochemistry and Medical Chemistry, Pomeranian Medical University, Powstańców Wlkp. 72, Szczecin 70-111, Poland.
| | - Irena Baranowska-Bosiacka
- Department of Biochemistry and Medical Chemistry, Pomeranian Medical University, Powstańców Wlkp. 72, Szczecin 70-111, Poland.
| | - Izabela Gutowska
- Department of Biochemistry and Human Nutrition, Pomeranian Medical University, Broniewskiego 24, Szczecin 71-460, Poland.
| | - Maciej Tarnowski
- Department of Physiology, Pomeranian Medical University, Powstańców Wlkp. 72, Szczecin 70-111, Poland.
| | - Katarzyna Piotrowska
- Department of Physiology, Pomeranian Medical University, Powstańców Wlkp. 72, Szczecin 70-111, Poland.
| | - Emilia Metryka
- Department of Biochemistry and Medical Chemistry, Pomeranian Medical University, Powstańców Wlkp. 72, Szczecin 70-111, Poland.
| | - Krzysztof Safranow
- Department of Biochemistry and Medical Chemistry, Pomeranian Medical University, Powstańców Wlkp. 72, Szczecin 70-111, Poland.
| | - Dariusz Chlubek
- Department of Biochemistry and Medical Chemistry, Pomeranian Medical University, Powstańców Wlkp. 72, Szczecin 70-111, Poland.
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23
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Gulati K, Hamlet SM, Ivanovski S. Tailoring the immuno-responsiveness of anodized nano-engineered titanium implants. J Mater Chem B 2018; 6:2677-2689. [PMID: 32254221 DOI: 10.1039/c8tb00450a] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Owing to its biocompatibility and corrosion resistance, titanium is one of the most commonly used implantable biomaterials. Numerous in vitro and in vivo investigations have established that titanium surfaces with a nanoscale topography outperform conventional smooth or micro-rough surfaces in terms of achieving desirable bonding with bone (i.e. enhanced bioactivity). Among these nanoscale topographical modifications, ordered nanostructures fabricated via electrochemical anodization, especially titania nanotubes (TNTs), are particularly attractive. This is due to their ability to augment bioactivity, deliver drugs and the potential for easy/cost-effective translation into the current implant market. However, the potential of TNT-modified implants to modulate the host immune-inflammatory response, which is critical for achieving timely osseointegration, remains relatively unexplored. Such immunomodulatory effects may be achieved by modifying the physical and chemical properties of the TNTs. Furthermore, therapeutic/bioactive enhancements performed on these nano-engineered implants (such as antibacterial or osteogenic functions) are likely to illicit an immune response which needs to be appropriately controlled. The lack of sufficient in-depth studies with respect to immune cell responses to TNTs has created research gaps that must be addressed in order to facilitate the design of the next generation of immuno-modulatory titanium implants. This review article focuses on the chemical, topographical and mechanical features of TNT-modified implants that can be manipulated in order to achieve immuno-modulation, as well as providing an insight into how modulating the immune response can augment implant performance.
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Affiliation(s)
- Karan Gulati
- School of Dentistry, The University of Queensland, 288 Herston Road, Herston, QLD 4006, Australia.
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24
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Toxic effects of fluoride on organisms. Life Sci 2018; 198:18-24. [DOI: 10.1016/j.lfs.2018.02.001] [Citation(s) in RCA: 125] [Impact Index Per Article: 20.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2017] [Revised: 01/29/2018] [Accepted: 02/01/2018] [Indexed: 12/29/2022]
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25
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Kuang P, Deng H, Cui H, Chen L, Fang J, Zuo Z, Deng J, Wang X, Zhao L. Sodium fluoride (NaF) causes toxic effects on splenic development in mice. Oncotarget 2018; 8:4703-4717. [PMID: 28002795 PMCID: PMC5354865 DOI: 10.18632/oncotarget.13971] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2016] [Accepted: 12/07/2016] [Indexed: 12/25/2022] Open
Abstract
At present, very limited studies focus on the toxic effect of sodium fluoride (NaF) on splenic development of human and animals in vivo. This study was firstly designed to evaluate the toxic effects of NaF on the splenic development of mice in vivo by observing histopathological lesions, changes of splenic growth index (GI), T and B cells, immunoglobulin A (IgA), immunoglobulin G (IgG) and immunoglobulin M (IgM) contents, cytokine protein expression levels, and cell cycle and cyclins/cdks protein expression levels using the methods of pathology, flow cytometry (FCM), western blot (WB), and enzyme-linked immunosorbent assay (ELISA). A total of 240 ICR mice were equally allocated into four groups with intragastric administration of distilled water in the control group and 12, 24, 48 mg/kg NaF solution in the experimental groups for 42 days. The results showed that NaF in 12 mg/kg and over caused the toxic effects on splenic development, which was characterized by reducing growth index and lymphocytes in the white and red pulp histopathologically, increasing cell percentages of the G0/G1 phase and decreasing cell percentages of the S phase, and reducing T cells and B cells as well as IgA, IgG, and IgM contents when compared with those in the control group. Concurrently, cytokines including interleukin-2 (IL-2), transforming growth factor beta (TGF-β), tumor necrosis factor alpha (TNF-α), interferon gamma (IFN-γ) and cyclin (E/D and CDK2/4) protein expression levels were markedly decreased (P < 0.05 or P < 0.01), and interleukin-10 (IL-10) protein expression levels were significantly increased (P < 0.05 and P < 0.01) in the three NaF-treated groups. Toxic effects finally impaired the splenic cellular immunity and humoral immunity due to the reduction of T and B cell population and activity. Cell cycle arrest is the molecular basis of NaF-caused toxic effects on the splenic development.
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Affiliation(s)
- Ping Kuang
- College of Veterinary Medicine, Sichuan Agricultural University, Ya'an 625014, China
| | - Huidan Deng
- College of Veterinary Medicine, Sichuan Agricultural University, Ya'an 625014, China
| | - Hengmin Cui
- College of Veterinary Medicine, Sichuan Agricultural University, Ya'an 625014, China.,Key Laboratory of Animal Diseases and Environmental Hazards of Sichuan Province, Sichuan Agricultural University, Ya'an 625014, China
| | - Lian Chen
- College of Veterinary Medicine, Sichuan Agricultural University, Ya'an 625014, China
| | - Jing Fang
- College of Veterinary Medicine, Sichuan Agricultural University, Ya'an 625014, China.,Key Laboratory of Animal Diseases and Environmental Hazards of Sichuan Province, Sichuan Agricultural University, Ya'an 625014, China
| | - Zhicai Zuo
- College of Veterinary Medicine, Sichuan Agricultural University, Ya'an 625014, China.,Key Laboratory of Animal Diseases and Environmental Hazards of Sichuan Province, Sichuan Agricultural University, Ya'an 625014, China
| | - Junliang Deng
- College of Veterinary Medicine, Sichuan Agricultural University, Ya'an 625014, China.,Key Laboratory of Animal Diseases and Environmental Hazards of Sichuan Province, Sichuan Agricultural University, Ya'an 625014, China
| | - Xun Wang
- College of Veterinary Medicine, Sichuan Agricultural University, Ya'an 625014, China.,Key Laboratory of Animal Diseases and Environmental Hazards of Sichuan Province, Sichuan Agricultural University, Ya'an 625014, China
| | - Ling Zhao
- College of Veterinary Medicine, Sichuan Agricultural University, Ya'an 625014, China.,Key Laboratory of Animal Diseases and Environmental Hazards of Sichuan Province, Sichuan Agricultural University, Ya'an 625014, China
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26
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Ma Y, Zhang K, Ren F, Wang J. Developmental fluoride exposure influenced rat's splenic development and cell cycle via disruption of the ERK signal pathway. CHEMOSPHERE 2017; 187:173-180. [PMID: 28846973 DOI: 10.1016/j.chemosphere.2017.08.067] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/04/2017] [Revised: 08/13/2017] [Accepted: 08/14/2017] [Indexed: 06/07/2023]
Abstract
Excessive fluoride exposure has been reported to cause damage to spleen. Neonatal period is characterized by rapid proliferation and differentiation of lymphocyte in the spleen. Children may be more sensitive to the toxicity of fluoride compared to the adults. The aim of this study was to investigate the effects of postnatal exposure (from neonatal period to early adulthood) to fluoride on the development of spleen on a regular basis and the underlying signal pathway. Results showed a marked decrease in spleen weight index and altered morphology in the spleen of fluoride-treated group on PND-84, which reflected fluoride inhibition of the development of spleen. Fluoride exposure induced cell cycle arrest of splenocytes and decreased the mRNA expression of IL-2, which indicated compromised baseline lymphocyte proliferation in the spleen. Time course research from 3-wk-of-age until 12-wk-of-age showed an adverse and cumulative impact of fluoride on the development of spleen. In view of the key role of MAPK/ERK pathway in lymphocyte development, Raf-1/MEK-1/ERK-2/c-fos mRNA expression and ERK/p-ERK protein expression were detected. Results showed despite a transitory increase in mRNA expression from PND-42 to PND-63 in fluoride-treated group, the expression of these genes on PND-84 decreased significantly compared with PND-42 or PND-63. NaF significantly inhibited the phosphorylation of ERK protein on PND-84. Taken together, these results emphasized the vital role of ERK pathway in the interfered development of spleen induced by a high dose of fluoride exposure in rats.
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Affiliation(s)
- Yanqin Ma
- College of Life Science, Shanxi Agricultural University, Taigu, Shanxi 030801, China; Shanxi Key Laboratory of Environmental Veterinary Medicine, Shanxi Agricultural University, Taigu, Shanxi 030801, China
| | - Kankan Zhang
- Shanxi Key Laboratory of Environmental Veterinary Medicine, Shanxi Agricultural University, Taigu, Shanxi 030801, China
| | - Fengjun Ren
- Shanxi Key Laboratory of Environmental Veterinary Medicine, Shanxi Agricultural University, Taigu, Shanxi 030801, China
| | - Jundong Wang
- Shanxi Key Laboratory of Environmental Veterinary Medicine, Shanxi Agricultural University, Taigu, Shanxi 030801, China.
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27
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Guo H, Kuang P, Luo Q, Cui H, Deng H, Liu H, Lu Y, Fang J, Zuo Z, Deng J, Li Y, Wang X, Zhao L. Effects of sodium fluoride on blood cellular and humoral immunity in mice. Oncotarget 2017; 8:85504-85515. [PMID: 29156736 PMCID: PMC5689626 DOI: 10.18632/oncotarget.20198] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2017] [Accepted: 07/19/2017] [Indexed: 01/19/2023] Open
Abstract
Exposure to high fluorine can cause toxicity in human and animals. Currently, there are no systematic studies on effects of high fluorine on blood cellular immunity and humoral immunity in mice. We evaluated the alterations of blood cellular immunity and humoral immunity in mice by using flow cytometry and ELISA. In the cellular immunity, we found that sodium fluoride (NaF) in excess of 12 mg/Kg resulted in a significant decrease in the percentages of CD3+, CD3+CD4+, CD3+CD8+ T lymphocytes in the peripheral blood. Meanwhile, serum T helper type 1 (Th1) cytokines including interleukin (IL)-2, interferon (IFN)-γ, tumor necrosis factor (TNF), and Th2 cytokines including IL-4, IL-6, IL-10, and Th17 cytokine (IL-17A) contents were decreased. In the humoral immunity, NaF reduced the peripheral blood percentages of CD19+ B lymphocytes and serum immunoglobulin A (IgA), immunoglobulin G (IgG) and immunoglobulin M (IgM). The above results show that NaF can reduce blood cellular and humoral immune function in mice, providing an excellent animal model for clinical studies on immunotoxicity-related fluorosis.
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Affiliation(s)
- Hongrui Guo
- College of Veterinary Medicine, Sichuan Agricultural University, Ya’an 625014, China
| | - Ping Kuang
- College of Veterinary Medicine, Sichuan Agricultural University, Ya’an 625014, China
| | - Qin Luo
- College of Veterinary Medicine, Sichuan Agricultural University, Ya’an 625014, China
| | - Hengmin Cui
- College of Veterinary Medicine, Sichuan Agricultural University, Ya’an 625014, China
- Key Laboratory of Animal Diseases and Environmental Hazards of Sichuan Province, Sichuan Agriculture University, Ya’an 625014, China
| | - Huidan Deng
- College of Veterinary Medicine, Sichuan Agricultural University, Ya’an 625014, China
| | - Huan Liu
- College of Veterinary Medicine, Sichuan Agricultural University, Ya’an 625014, China
| | - Yujiao Lu
- College of Veterinary Medicine, Sichuan Agricultural University, Ya’an 625014, China
| | - Jing Fang
- College of Veterinary Medicine, Sichuan Agricultural University, Ya’an 625014, China
- Key Laboratory of Animal Diseases and Environmental Hazards of Sichuan Province, Sichuan Agriculture University, Ya’an 625014, China
| | - Zhicai Zuo
- College of Veterinary Medicine, Sichuan Agricultural University, Ya’an 625014, China
- Key Laboratory of Animal Diseases and Environmental Hazards of Sichuan Province, Sichuan Agriculture University, Ya’an 625014, China
| | - Junliang Deng
- College of Veterinary Medicine, Sichuan Agricultural University, Ya’an 625014, China
- Key Laboratory of Animal Diseases and Environmental Hazards of Sichuan Province, Sichuan Agriculture University, Ya’an 625014, China
| | - Yinglun Li
- College of Veterinary Medicine, Sichuan Agricultural University, Ya’an 625014, China
- Key Laboratory of Animal Diseases and Environmental Hazards of Sichuan Province, Sichuan Agriculture University, Ya’an 625014, China
| | - Xun Wang
- College of Veterinary Medicine, Sichuan Agricultural University, Ya’an 625014, China
- Key Laboratory of Animal Diseases and Environmental Hazards of Sichuan Province, Sichuan Agriculture University, Ya’an 625014, China
| | - Ling Zhao
- College of Veterinary Medicine, Sichuan Agricultural University, Ya’an 625014, China
- Key Laboratory of Animal Diseases and Environmental Hazards of Sichuan Province, Sichuan Agriculture University, Ya’an 625014, China
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28
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Sodium fluoride induces renal inflammatory responses by activating NF-κB signaling pathway and reducing anti-inflammatory cytokine expression in mice. Oncotarget 2017; 8:80192-80207. [PMID: 29113295 PMCID: PMC5655190 DOI: 10.18632/oncotarget.19006] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2017] [Accepted: 06/20/2017] [Indexed: 12/25/2022] Open
Abstract
Fluoride is widely distributed in the environment and often results in adverse health effects on animals and human beings. It has been proved that fluoride can induce inflammatory responses in vitro. However, very limited reports are focused on fluoride-induced inflammatory responses in vivo. In this study, mice were used to investigate sodium fluoride (NaF) induced renal inflammatory responses and the potential mechanism by using the methods of pathology, biochemistry, enzyme-linked immunosorbent assay (ELISA), quantitative real-time polymerase chain reaction (qRT-PCR) and western blot. A total of 240 ICR mice were randomly divided into four equal groups: the control group and three experimental groups (NaF was given orally at the dose of 0, 12, 24 and 48 mg/kg body weight for 42 days, respectively). The results showed that NaF in excess of 12 mg/kg induced the renal histopathological lesions, and inflammatory responses via the activation of nuclear factor-kappa B (NF-κB) signaling pathway and the reduction of anti-inflammatory cytokines expression. The activation of NF-κB signaling pathway was characterized by increasing the nitric oxide (NO) and prostaglandin E2 (PGE2) contents, inducible nitric oxide synthase (iNOS) activities and mRNA expression levels, and the mRNA and protein expression levels of cyclooxygenase-2 (COX-2), tumor necrosis factor-α (TNF-α), interleukin-1β (IL-1β), interleukin-6 (IL-6) and interleukin-8 (IL-8) in three NaF-treated groups. Concurrently, the mRNA and protein expression levels of the anti-inflammatory cytokines including interleukin-4 (IL-4) and interleukin-10 (IL-10) were decreased in three experimental groups when compared with those in the control group.
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29
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Tian Y, Huo M, Li G, Li Y, Wang J. Regulation of LPS-induced mRNA expression of pro-inflammatory cytokines via alteration of NF-κB activity in mouse peritoneal macrophages exposed to fluoride. CHEMOSPHERE 2016; 161:89-95. [PMID: 27421105 DOI: 10.1016/j.chemosphere.2016.06.035] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/11/2016] [Revised: 06/06/2016] [Accepted: 06/08/2016] [Indexed: 06/06/2023]
Abstract
F toxicity to immune system, especially to macrophage, has been studied a lot recently. Nuclear factor-kappa B (NF-κB), as a transcription factor, plays a central role in immune and inflammatory responses via the regulation of downstream gene expression. Recent studies indicated that fluoride effect on inflammatory cytokine secretion, however, the molecular mechanism was less understood. In our study, peritoneal macrophages (PMs) were divided several groups and were administrated sodium fluoride (NaF, 50, 100, 200, 400, 800 μM) and/or lipopolysaccharide (LPS, 30 ng/mg). The mRNA expression of p65, inducible nitric oxide synthase (iNOS), tumor necrosis factor alpha (TNF-α) and interleukin-1 beta (IL-1β) in macrophages exposed to fluoride was determined by quantitative real-time RT-PCR respectively. The translocation of NF-κB from cytoplasm to nucleus, which in a way reflects NF-κB activity, was demonstrated by Immunofluorescence and ELISA. Our results showed that fluoride had a dose-dependent effect on NF-κB activity, which coincided with LPS-induced mRNA expression of its downstream genes, iNOS and IL-1β. Fluoride alone causes no effect on gene expression. However, the mRNA expression of TNF-α showed non-NF-κB-dependent manner. Therefore, we come to the conclusion that fluoride can regulate LPS-induced mRNA expression of iNOS and IL-1β via NF-κB pathway in mouse peritoneal macrophages.
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Affiliation(s)
- Yuhu Tian
- Shanxi Key Laboratory of Environmental Veterinary Medicine, Shanxi Agricultural University, Jinzhong, Shanxi, China
| | - Meijun Huo
- Shanxi Key Laboratory of Environmental Veterinary Medicine, Shanxi Agricultural University, Jinzhong, Shanxi, China
| | - Guangsheng Li
- Shanxi Key Laboratory of Environmental Veterinary Medicine, Shanxi Agricultural University, Jinzhong, Shanxi, China
| | - Yanyan Li
- Shanxi Key Laboratory of Environmental Veterinary Medicine, Shanxi Agricultural University, Jinzhong, Shanxi, China
| | - Jundong Wang
- Shanxi Key Laboratory of Environmental Veterinary Medicine, Shanxi Agricultural University, Jinzhong, Shanxi, China.
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30
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Ren X, Wang Y, Meng Q, Jia H, Wang Y, Kong X, Duan C, Zhang Z. A Coumarin-based Colorimetric and Fluorescent Chemosensor for the “Naked-eye” Detection of Fluoride ion in 100 % Natural Water Medium Using Coated Chromatography Plates. ChemistrySelect 2016. [DOI: 10.1002/slct.201600822] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Xianxuan Ren
- Key Laboratory for Functional Material, Educational Department of Liaoning Province; University of Science and Technology Liaoning; Anshan 114051 P. R. China
| | - Yue Wang
- Key Laboratory for Functional Material, Educational Department of Liaoning Province; University of Science and Technology Liaoning; Anshan 114051 P. R. China
| | - Qingtao Meng
- Key Laboratory for Functional Material, Educational Department of Liaoning Province; University of Science and Technology Liaoning; Anshan 114051 P. R. China
- State Key Laboratory of Fine Chemicals; Dalian University of Technology; 2 Linggong Road, Dalian High-Tech Industrial Zone 116024 P. R. China
| | - Hongmin Jia
- Key Laboratory for Functional Material, Educational Department of Liaoning Province; University of Science and Technology Liaoning; Anshan 114051 P. R. China
| | - Yongfei Wang
- Key Laboratory for Functional Material, Educational Department of Liaoning Province; University of Science and Technology Liaoning; Anshan 114051 P. R. China
| | - Xiangfeng Kong
- Key Laboratory for Functional Material, Educational Department of Liaoning Province; University of Science and Technology Liaoning; Anshan 114051 P. R. China
| | - Chunying Duan
- State Key Laboratory of Fine Chemicals; Dalian University of Technology; 2 Linggong Road, Dalian High-Tech Industrial Zone 116024 P. R. China
| | - Zhiqiang Zhang
- Key Laboratory for Functional Material, Educational Department of Liaoning Province; University of Science and Technology Liaoning; Anshan 114051 P. R. China
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