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Bao Y, Qi Y, Li Q, Wang L, Cao Z, Li J, Wu M, Chen J, Zhang H, Guo Q, Jiang B, Zhong J, Li J. Fluoride removal from coal mining water using novel polymeric aluminum modified activated carbon prepared through mechanochemical process. J Environ Sci (China) 2024; 146:226-236. [PMID: 38969450 DOI: 10.1016/j.jes.2023.07.041] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2023] [Revised: 07/26/2023] [Accepted: 07/31/2023] [Indexed: 07/07/2024]
Abstract
Defluoridation of coal mining water is of great significance for sustainable development of coal industry in western China. A novel one-step mechanochemical method was developed to prepare polymeric aluminum modified powder activated carbon (PAC) for effective fluoride removal from coal mining water. Aluminum was stably loaded on the PAC through facile solid-phase reaction between polymeric aluminum (polyaluminum chloride (PACl) or polyaluminum ferric chloride (PAFC)) and PAC (1:15 W/W). Fluoride adsorption on PACl and PAFC modified PAC (C-PACl and C-PAFC) all reached equilibrium within 5 min, at rate of 2.56 g mg-1 sec-1 and 1.31 g mg-1 sec-1 respectively. Larger increase of binding energy of Al on C-PACl (AlF bond: 76.64 eV and AlFOH bond: 77.70 eV) relative to that of Al on C-PAFC (AlF bond: 76.52 eV) explained higher fluoride uptake capacity of C-PACl. Less chloride was released from C-PACl than that from C-PAFC due to its higher proportion of covalent chlorine and lower proportion of ionic chlorine. The elements mapping and atomic composition proved the stability of Al loaded on the PAC as well as the enrichment of fluoride on both C-PACl and C-PAFC. The Bader charge, formation energy and bond length obtained from DFT computational results explained the fluoride adsorption mechanism further. The carbon emission was 7.73 kg CO2-eq/kg adsorbent prepared through mechanochemical process, which was as low as 1:82.3 to 1:8.07 × 104 compared with the ones prepared by conventional hydrothermal methods.
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Affiliation(s)
- Yixiang Bao
- State Key Laboratory of Water Resource Protection and Utilization in Coal Mining, National Institute of Clean and Low Carbon Energy, Beijing 102209, China
| | - Yonghui Qi
- School of Environmental and Municipal Engineering, Lanzhou Jiaotong University, Lanzhou 730070, China
| | - Qiao Li
- State Key Laboratory of Water Resource Protection and Utilization in Coal Mining, National Institute of Clean and Low Carbon Energy, Beijing 102209, China
| | - Lei Wang
- China Coal Society, Chaoyang District, Beijing 100013, China
| | - Zhiguo Cao
- State Key Laboratory of Water Resource Protection and Utilization in Coal Mining, National Institute of Clean and Low Carbon Energy, Beijing 102209, China
| | - Jie Li
- Guoneng Shendong Coal Technology Research Institute, Yulin 719315, China
| | - Min Wu
- State Key Laboratory of Water Resource Protection and Utilization in Coal Mining, National Institute of Clean and Low Carbon Energy, Beijing 102209, China
| | - Jun Chen
- Bulianta Coal Mine, Shendong Coal Group Co. Ltd., Erdos 017209, China
| | - Haiqin Zhang
- State Key Laboratory of Water Resource Protection and Utilization in Coal Mining, National Institute of Clean and Low Carbon Energy, Beijing 102209, China
| | - Qiang Guo
- State Key Laboratory of Water Resource Protection and Utilization in Coal Mining, National Institute of Clean and Low Carbon Energy, Beijing 102209, China
| | - Binbin Jiang
- State Key Laboratory of Water Resource Protection and Utilization in Coal Mining, National Institute of Clean and Low Carbon Energy, Beijing 102209, China
| | - Jinkui Zhong
- State Key Laboratory of Water Resource Protection and Utilization in Coal Mining, National Institute of Clean and Low Carbon Energy, Beijing 102209, China
| | - Jingfeng Li
- State Key Laboratory of Water Resource Protection and Utilization in Coal Mining, National Institute of Clean and Low Carbon Energy, Beijing 102209, China.
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Zhao C, Chen G, Huang Y, Zhang Y, Li S, Jiang Z, Peng H, Wang J, Li D, Hou R, Peng C, Wan X, Cai H. Alleviation of fluoride-induced colitis by tea polysaccharides: Insights into the role of Limosilactobacillus vaginalis and butyric acid. JOURNAL OF HAZARDOUS MATERIALS 2024; 476:134858. [PMID: 38905983 DOI: 10.1016/j.jhazmat.2024.134858] [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: 03/13/2024] [Revised: 05/23/2024] [Accepted: 06/06/2024] [Indexed: 06/23/2024]
Abstract
Endemic fluorosis has gained increasing attention as a public health concern, and the escalating risk of colitis resulting from excessive fluoride intake calls for effective mitigation strategies. This study aimed to investigate the potential mechanisms underlying the alleviation of fluoride-induced colitis by Tea polysaccharides (TPS). Under conditions of excessive fluoride intake, significant changes were observed in the gut microbiota of rats, leading to aggravated colitis. However, the intervention of TPS exerted a notable alleviating effect on colitis symptoms. Antibiotic intervention and fecal microbiota transplantation (FMT) experiments provided evidence that TPS-mediated relief of fluoride-induced colitis is mediated through its effects on the gut microbiota. Furthermore, TPS supplementation was found to modulate the structure of gut microbiota, enhance the relative abundance of Limosilactobacillus vaginalis in the gut microbiota, and promote the expression of short-chain fatty acid (SCFAs) receptors in colonic tissue. Notably, L. vaginalis played a significant role in alleviating fluoride-induced colitis and facilitating the absorption of butyric acid in the rat colon. Subsequent butyric acid intervention experiments confirmed its remarkable alleviating effect on fluoride-induced colitis. Overall, these findings provide a potential preventive strategy for fluoride-induced colitis by TPS intervention, which is mediated by L. vaginalis and butyric acid.
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Affiliation(s)
- Chenjun Zhao
- State Key Laboratory of Tea Plant Biology and Utilization, School of Tea & Food Science and Technology, Anhui Agricultural University, Hefei 230036, Anhui, PR China; Joint Research Center for Food Nutrition and Health of IHM, Anhui Agricultural University, Hefei 230036, Anhui, PR China
| | - Guijie Chen
- State Key Laboratory of Tea Plant Biology and Utilization, School of Tea & Food Science and Technology, Anhui Agricultural University, Hefei 230036, Anhui, PR China; Joint Research Center for Food Nutrition and Health of IHM, Anhui Agricultural University, Hefei 230036, Anhui, PR China
| | - Ying Huang
- State Key Laboratory of Tea Plant Biology and Utilization, School of Tea & Food Science and Technology, Anhui Agricultural University, Hefei 230036, Anhui, PR China; Joint Research Center for Food Nutrition and Health of IHM, Anhui Agricultural University, Hefei 230036, Anhui, PR China
| | - Yuxuan Zhang
- State Key Laboratory of Tea Plant Biology and Utilization, School of Tea & Food Science and Technology, Anhui Agricultural University, Hefei 230036, Anhui, PR China; Joint Research Center for Food Nutrition and Health of IHM, Anhui Agricultural University, Hefei 230036, Anhui, PR China
| | - Sichen Li
- State Key Laboratory of Tea Plant Biology and Utilization, School of Tea & Food Science and Technology, Anhui Agricultural University, Hefei 230036, Anhui, PR China; Joint Research Center for Food Nutrition and Health of IHM, Anhui Agricultural University, Hefei 230036, Anhui, PR China
| | - Zhiliang Jiang
- State Key Laboratory of Tea Plant Biology and Utilization, School of Tea & Food Science and Technology, Anhui Agricultural University, Hefei 230036, Anhui, PR China; Joint Research Center for Food Nutrition and Health of IHM, Anhui Agricultural University, Hefei 230036, Anhui, PR China
| | - Huihui Peng
- State Key Laboratory of Tea Plant Biology and Utilization, School of Tea & Food Science and Technology, Anhui Agricultural University, Hefei 230036, Anhui, PR China; Joint Research Center for Food Nutrition and Health of IHM, Anhui Agricultural University, Hefei 230036, Anhui, PR China
| | - Juan Wang
- State Key Laboratory of Tea Plant Biology and Utilization, School of Tea & Food Science and Technology, Anhui Agricultural University, Hefei 230036, Anhui, PR China; Joint Research Center for Food Nutrition and Health of IHM, Anhui Agricultural University, Hefei 230036, Anhui, PR China
| | - Daxiang Li
- State Key Laboratory of Tea Plant Biology and Utilization, School of Tea & Food Science and Technology, Anhui Agricultural University, Hefei 230036, Anhui, PR China; Joint Research Center for Food Nutrition and Health of IHM, Anhui Agricultural University, Hefei 230036, Anhui, PR China
| | - Ruyan Hou
- State Key Laboratory of Tea Plant Biology and Utilization, School of Tea & Food Science and Technology, Anhui Agricultural University, Hefei 230036, Anhui, PR China; Joint Research Center for Food Nutrition and Health of IHM, Anhui Agricultural University, Hefei 230036, Anhui, PR China
| | - Chuanyi Peng
- State Key Laboratory of Tea Plant Biology and Utilization, School of Tea & Food Science and Technology, Anhui Agricultural University, Hefei 230036, Anhui, PR China; Joint Research Center for Food Nutrition and Health of IHM, Anhui Agricultural University, Hefei 230036, Anhui, PR China
| | - Xiaochun Wan
- State Key Laboratory of Tea Plant Biology and Utilization, School of Tea & Food Science and Technology, Anhui Agricultural University, Hefei 230036, Anhui, PR China; Joint Research Center for Food Nutrition and Health of IHM, Anhui Agricultural University, Hefei 230036, Anhui, PR China.
| | - Huimei Cai
- State Key Laboratory of Tea Plant Biology and Utilization, School of Tea & Food Science and Technology, Anhui Agricultural University, Hefei 230036, Anhui, PR China; Joint Research Center for Food Nutrition and Health of IHM, Anhui Agricultural University, Hefei 230036, Anhui, PR China.
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Zuo Q, Lin L, Zhang Y, Ommati MM, Wang H, Zhao J. The Footprints of Mitochondrial Fission and Apoptosis in Fluoride-Induced Renal Dysfunction. Biol Trace Elem Res 2024; 202:4125-4135. [PMID: 38057486 DOI: 10.1007/s12011-023-03994-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/17/2023] [Accepted: 11/30/2023] [Indexed: 12/08/2023]
Abstract
Fluoride (F) is widely distributed in the environment and poses serious health risks to humans and animals. Although a good body of literature demonstrates a close relationship between F content and renal system performance, there is no satisfactory information on the involved intracellular routes. Hence, this study used histopathology and mitochondrial fission to explore fluorine-induced nephrotoxicity further. For this purpose, mice were exposed to the F ion (0, 25, 50, 100 mg/L) for 90 days. The effects of different F levels on renal pathomorphology and ion metabolism were assessed using hematoxylin and eosin (H&E), periodic acid-Schiff stain (PAS), periodic acid-silver methenamine (PASM), Prussian blue (PB), and alkaline phosphatase (ALP) staining. The results showed that F could lead to glomerular atrophy, tubular degeneration, and vacuolization. Meanwhile, F also could increase glomerular and tubular glycoproteins; made thickening of the renal capsule membrane and thickening of the tubular basement membrane; led to the accumulation of iron ions in the tubules; and increased in glomerular alp and decreased tubular alp. Concomitantly, IHC results showed that F significantly upregulated the expression levels of mitochondrial fission-related proteins, including mitochondrial fission factor (Mff), fission 1 (Fis1), and mitochondrial dynamics proteins of 49 kDa (MiD49) and 51 kDa (MiD51), ultimately caused apoptosis. To sum up, excessive fluorine has a strong nephrotoxicity effect, disrupting the balance of mitochondrial fission and fusion, interfering with the process of mitochondrial fission, and then causing damage to renal tissue structure and apoptosis.
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Affiliation(s)
- Qiyong Zuo
- 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
| | - Lin Lin
- 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
| | - Yuling 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
| | - Mohammad Mehdi Ommati
- 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
| | - Hongwei 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
| | - Jing Zhao
- 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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Zhang Q, Fei X, Li Y, Zhang H, Chen L, Ruan J, Dong N. Epigallocatechin-3-gallate attenuates fluoride induced apoptosis via PI3K/FoxO1 pathway in ameloblast-like cells. Toxicon 2024; 247:107857. [PMID: 38996976 DOI: 10.1016/j.toxicon.2024.107857] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2024] [Revised: 07/03/2024] [Accepted: 07/09/2024] [Indexed: 07/14/2024]
Abstract
Fluoride is a double-edged sword. It was widely used for early caries prevention while excessive intake caused a toxicology effect, affected enamel development, and resulted in dental fluorosis. The study aimed to evaluate the protective effect and mechanism of Epigallocatechin-3-gallate (EGCG) on the apoptosis induced by fluoride in ameloblast-like cells. We observed that NaF triggered apoptotic alterations in cell morphology, excessive NaF arrested cell cycle at the G1, and induced apoptosis by up-regulating Bax and down-regulating Bcl-2. NaF activated the insulin-like growth factor receptor (IGFR), and phosphatidylinositol-3-hydroxylase (p-PI3K), while dose-dependently down-regulating the expression of Forkhead box O1 (FoxO1). EGCG supplements reversed the changes in LS8 morphology, the cell cycle, and apoptosis induced by fluoride. These results indicated that EGCG possesses a protective effect against fluoride toxicity. Furthermore, EGCG suppressed the activation of p-PI3K and the down-regulation of FoxO1 caused by fluoride. Collectively, our findings suggested that EGCG attenuated fluoride-induced apoptosis by inhibiting the PI3K/FoxO1 signaling pathway. EGCG may serve as a new alternative method for dental fluorosis prevention, control, and treatment.
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Affiliation(s)
- Qian Zhang
- Key Laboratory of Shaanxi Province for Craniofacial Precision Medicine Research, College of Stomatology, Xi'an Jiaotong University, Xi'an, Shaanxi, China
| | - Xiuzhi Fei
- Key Laboratory of Shaanxi Province for Craniofacial Precision Medicine Research, College of Stomatology, Xi'an Jiaotong University, Xi'an, Shaanxi, China
| | - Yue Li
- Key Laboratory of Shaanxi Province for Craniofacial Precision Medicine Research, College of Stomatology, Xi'an Jiaotong University, Xi'an, Shaanxi, China
| | - Hengwei Zhang
- Key Laboratory of Shaanxi Province for Craniofacial Precision Medicine Research, College of Stomatology, Xi'an Jiaotong University, Xi'an, Shaanxi, China
| | - Lu Chen
- Key Laboratory of Shaanxi Province for Craniofacial Precision Medicine Research, College of Stomatology, Xi'an Jiaotong University, Xi'an, Shaanxi, China
| | - Jianping Ruan
- Key Laboratory of Shaanxi Province for Craniofacial Precision Medicine Research, College of Stomatology, Xi'an Jiaotong University, Xi'an, Shaanxi, China.
| | - Ning Dong
- Key Laboratory of Shaanxi Province for Craniofacial Precision Medicine Research, College of Stomatology, Xi'an Jiaotong University, Xi'an, Shaanxi, China.
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Deng J, Zeng X, Zhang K, Zhang T, Dong Y, Zou J, Wu C, Li Y, Li F, Guan Z. Knockdown of SMYD3 by RNA Interference Regulates the Expression of Autophagy-Related Proteins and Inhibits Bone Formation in Fluoride-Exposed Osteoblasts. Biol Trace Elem Res 2024:10.1007/s12011-024-04327-w. [PMID: 39106008 DOI: 10.1007/s12011-024-04327-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/08/2024] [Accepted: 07/24/2024] [Indexed: 08/07/2024]
Abstract
This study aimed to explore the role of histone methyltransferase SET and MYND domain containing 3 (SMYD3) in bone metabolism of osteoblasts exposed to fluoride. The levels of urine fluoride, BALP, and OC and the mRNA expression of SMYD3 were determined in patients with skeletal fluorosis and non-fluoride-exposed people on informed consent. The expression of SMYD3 protein, OC contents, and BALP activities were detected in human osteoblast-like MG63 cells and rat primary osteoblasts treated with sodium fluoride (NaF) for 48 h. The autophagosomes were observed by transmission electron microscopy. Then, we knocked down SMYD3 to confirm whether it was involved in the regulation of bone formation and related to autophagy and Wnt/β-catenin pathway. We observed that OC and BALP levels in patients with skeletal fluorosis significantly increased, while the mRNA expression of SMYD3 significantly decreased in the skeletal fluorosis groups. In vitro, the OC contents, BALP activities, and expression of SMYD3 significantly increased, and many autophagosomes were observed in NaF treated osteoblasts. The downregulation of SMYD3 significantly inhibited OC contents, BALP activities, and expression of autophagy-related proteins, but with no significant changes in the Wnt/β-catenin pathway. Our results demonstrated that fluoride exposure with coal-burning pollution caused orthopedic injuries and abnormalities in the levels of OC and BALP and hindered normal bone metabolism. Silencing the SMYD3 gene could significantly reduce OC and BALP levels via inhibiting the increase in autophagy induced by fluoride.
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Affiliation(s)
- Jie Deng
- Key Laboratory of Endemic and Ethnic Diseases of the Ministry of Education, Guiyang, 550004, Guizhou, China
- Provincial Key Laboratory of Medical Molecular Biology, Guizhou Medical University, Guiyang, 550004, Guizhou, China
| | - Xiaoxiao Zeng
- Key Laboratory of Endemic and Ethnic Diseases of the Ministry of Education, Guiyang, 550004, Guizhou, China
- Provincial Key Laboratory of Medical Molecular Biology, Guizhou Medical University, Guiyang, 550004, Guizhou, China
| | - Kailin Zhang
- Key Laboratory of Endemic and Ethnic Diseases of the Ministry of Education, Guiyang, 550004, Guizhou, China
- Department of Biochemistry and Molecular Biology, Guizhou Medical University, Guiyang, 550004, Guizhou, China
| | - Ting Zhang
- Key Laboratory of Endemic and Ethnic Diseases of the Ministry of Education, Guiyang, 550004, Guizhou, China
- Provincial Key Laboratory of Medical Molecular Biology, Guizhou Medical University, Guiyang, 550004, Guizhou, China
| | - Yangting Dong
- Key Laboratory of Endemic and Ethnic Diseases of the Ministry of Education, Guiyang, 550004, Guizhou, China
- Provincial Key Laboratory of Medical Molecular Biology, Guizhou Medical University, Guiyang, 550004, Guizhou, China
| | - Jian Zou
- Key Laboratory of Endemic and Ethnic Diseases of the Ministry of Education, Guiyang, 550004, Guizhou, China
- Provincial Key Laboratory of Medical Molecular Biology, Guizhou Medical University, Guiyang, 550004, Guizhou, China
| | - Changxue Wu
- Key Laboratory of Endemic and Ethnic Diseases of the Ministry of Education, Guiyang, 550004, Guizhou, China
- Provincial Key Laboratory of Medical Molecular Biology, Guizhou Medical University, Guiyang, 550004, Guizhou, China
| | - Yi Li
- Key Laboratory of Endemic and Ethnic Diseases of the Ministry of Education, Guiyang, 550004, Guizhou, China
- Provincial Key Laboratory of Medical Molecular Biology, Guizhou Medical University, Guiyang, 550004, Guizhou, China
| | - Fucheng Li
- Research Group of Liupanshui Center for Disease Control and Prevention, Liupanshui, 553001, Guizhou, China
| | - Zhizhong Guan
- Key Laboratory of Endemic and Ethnic Diseases of the Ministry of Education, Guiyang, 550004, Guizhou, China.
- Departments of Pathology, The Affiliated Hospital of Guizhou Medical University, Guiyang, 550004, Guizhou, China.
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Liang C, Zhuang C, Cheng C, Bai J, Wu Y, Li X, Yang J, Li B, Fu W, Zhu Q, Lv J, Tan Y, Kumar Manthari R, Zhao Y, Wang J, Zhang J. Fluoride induces hepatointestinal damage and vitamin B 2 mitigation by regulating IL-17A and Bifidobacterium in ileum. J Adv Res 2024:S2090-1232(24)00317-5. [PMID: 39097090 DOI: 10.1016/j.jare.2024.07.034] [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: 03/24/2024] [Revised: 05/31/2024] [Accepted: 07/29/2024] [Indexed: 08/05/2024] Open
Abstract
INTRODUCTION Fluorosis is a global public health disease affecting more than 50 countries and 500 million people. Excessive fluoride damages the liver and intestines, yet the mechanisms and therapeutic approaches remain unclear. OBJECTIVES To explore the mechanisms by which fluoride-induced intestinal-hepatic damage and vitamin B2 alleviation. METHODS Fluoride and/or vitamin B2-treated IL-17A knockout and wild-type mouse models were established, the morphological and functional changes of liver and gut, total bile acid biosynthesis, metabolism, transport, and regulation of FXR-FGF15 signaling pathways were evaluated, the ileal microbiome was further analyzed by 16S rDNA sequence. Finally, Bifidobacterium supplementation mouse model was designed and re-examined the above indicators. RESULTS The results demonstrated that fluoride induced hepatointestinal injury and enterohepatic circulation disorder by altering the synthesis, transporters, and FXR-FGF15 pathway regulation of total bile acid. Importantly, the ileum was found to be the most sensitive and fluoride changed ileal microbiome particularly by reducing abundance of Bifidobacterium. While vitamin B2 supplementation attenuated fluoride-induced enterohepatic circulation dysfunction through IL-17A and ileal microbiome, Bifidobacterium supplementation also reversed fluoride-induced hepatointestinal injury. CONCLUSION Fluoride induces morphological and functional impairment of liver and gut tissues, as well as enterohepatic circulation disorder by altering total bile acid (TBA) synthesis, transporters, and FXR-FGF15 signaling regulation. Vitamin B2 attenuated fluoride-induced enterohepatic circulation disorder through IL-17A knockout and ileal microbiome regulation. The ileum was found to be the most sensitive to fluoride, leading to changes in ileal microbiome, particularly the reduction of Bifidobacterium. Furthermore, Bifidobacterium supplementation reversed fluoride-induced hepatointestinal injury. This study not only elucidates a novel mechanism by which fluoride causes hepatointestinal toxicity, but also provides a new physiological function of vitamin B2, which will be useful in the therapy of fluorosis and other hepatoenterological diseases.
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Affiliation(s)
- Chen Liang
- College of Animal Science, Shanxi Agricultural University, Taigu, Shanxi 030801, PR China
| | - Cuicui Zhuang
- College of Veterinary Medicine, Shanxi Agricultural University, Taigu, Shanxi 030801, PR China
| | - Chenkai Cheng
- College of Veterinary Medicine, Shanxi Agricultural University, Taigu, Shanxi 030801, PR China
| | - Jian Bai
- College of Life Science, Lv Liang University, Lishi, Shanxi 033001, PR China
| | - Yue Wu
- 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
| | - Jie Yang
- College of Veterinary Medicine, Shanxi Agricultural University, Taigu, Shanxi 030801, PR China
| | - Bohui Li
- College of Animal Science, Shanxi Agricultural University, Taigu, Shanxi 030801, PR China
| | - Weixiang Fu
- College of Veterinary Medicine, Shanxi Agricultural University, Taigu, Shanxi 030801, PR China
| | - Qianlong Zhu
- College of Veterinary Medicine, Shanxi Agricultural University, Taigu, Shanxi 030801, PR China
| | - Jiawei Lv
- College of Animal Science, Shanxi Agricultural University, Taigu, Shanxi 030801, PR China
| | - Yanjia Tan
- College of Veterinary Medicine, Shanxi Agricultural University, Taigu, Shanxi 030801, PR China
| | - Ram Kumar Manthari
- Department of Biotechnology, GITAM Institute of Science, Gandhi Institute of Technology and Management, Visakhapatnam 530045, Andhra Pradesh, India
| | - Yangfei Zhao
- 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
| | - Jianhai Zhang
- College of Veterinary Medicine, Shanxi Agricultural University, Taigu, Shanxi 030801, PR China.
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Yang W, Lu C, Chu F, Bu K, Ma H, Wang Q, Jiao Z, Wang S, Yang X, Gao Y, Sun D, Sun H. Fluoride-induced hypertension by regulating RhoA/ROCK pathway and phenotypic transformation of vascular smooth muscle cells: In vitro and in vivo evidence. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2024; 281:116681. [PMID: 38964063 DOI: 10.1016/j.ecoenv.2024.116681] [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: 03/20/2024] [Revised: 06/10/2024] [Accepted: 06/30/2024] [Indexed: 07/06/2024]
Abstract
Fluoride exposure has been implicated as a potential risk factor for hypertension, but the underlying mechanisms remain unclear. This study investigated the role of the RhoA/ROCK signaling pathway in fluoride-induced hypertension. Male Wistar rats were divided into different groups and exposed to varying concentrations of sodium fluoride (NaF) or sodium chloride (NaCl) via drinking water. The rats' blood pressure was measured, and their aortic tissue was utilized for high-throughput sequencing analysis. Additionally, rat and A7r5 cell models were established using NaF and/or Fasudil. The study evaluated the effects of fluoride exposure on blood pressure, pathological changes in the aorta, as well as the protein/mRNA expression levels of phenotypic transformation indicators (a-SMA, calp, OPN) in vascular smooth muscle cells (VSMCs), along with the RhoA/ROCK signaling pathway (RhoA, ROCK1, ROCK2, MLC/p-MLC). The results demonstrated that fluoride exposure in rats led to increased blood pressure. High-throughput sequencing analysis revealed differential gene expression associated with vascular smooth muscle contraction, with the RhoA/ROCK signaling pathway emerging as a key regulator. Pathological changes in the rat aorta, such as elastic membrane rupture and collagen fiber deposition, were observed following NaF exposure. However, fasudil, a ROCK inhibitor, mitigated these pathological changes. Both in vitro and in vivo models confirmed the activation of the RhoA/ROCK signaling pathway and the phenotypic transformation of VSMCs from a contractile to a synthetic state upon fluoride exposure. Fasudil effectively inhibited the activities of ROCK1 and ROCK2 and attenuated the phenotypic transformation of VSMCs. In conclusion, fluoride has the potential to induce hypertension through the activation of the RhoA/ROCK signaling pathway and phenotypic changes in vascular smooth muscle cells. These results provide new insights into the mechanism of fluoride-induced hypertension.
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Affiliation(s)
- Wenjing Yang
- Institute for Endemic Fluorosis Control, Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin, Heilongjiang 150081, China; NHC Key Laboratory of Etiology and Epidemiology (Harbin Medical University) Heilongjiang Provincial Key Laboratory of Trace Elements and Human Health, Key Laboratory of Etiology and Epidemiology, Education Bureau of Heilongjiang Province, State Key Laboratory of Frigid Zone Cardiovascular Diseases (SKLFZCD), China
| | - Chunqing Lu
- Institute for Endemic Fluorosis Control, Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin, Heilongjiang 150081, China; NHC Key Laboratory of Etiology and Epidemiology (Harbin Medical University) Heilongjiang Provincial Key Laboratory of Trace Elements and Human Health, Key Laboratory of Etiology and Epidemiology, Education Bureau of Heilongjiang Province, State Key Laboratory of Frigid Zone Cardiovascular Diseases (SKLFZCD), China
| | - Fang Chu
- Institute for Endemic Fluorosis Control, Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin, Heilongjiang 150081, China; NHC Key Laboratory of Etiology and Epidemiology (Harbin Medical University) Heilongjiang Provincial Key Laboratory of Trace Elements and Human Health, Key Laboratory of Etiology and Epidemiology, Education Bureau of Heilongjiang Province, State Key Laboratory of Frigid Zone Cardiovascular Diseases (SKLFZCD), China
| | - Keming Bu
- Institute for Endemic Fluorosis Control, Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin, Heilongjiang 150081, China; NHC Key Laboratory of Etiology and Epidemiology (Harbin Medical University) Heilongjiang Provincial Key Laboratory of Trace Elements and Human Health, Key Laboratory of Etiology and Epidemiology, Education Bureau of Heilongjiang Province, State Key Laboratory of Frigid Zone Cardiovascular Diseases (SKLFZCD), China
| | - Hao Ma
- Institute for Endemic Fluorosis Control, Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin, Heilongjiang 150081, China; NHC Key Laboratory of Etiology and Epidemiology (Harbin Medical University) Heilongjiang Provincial Key Laboratory of Trace Elements and Human Health, Key Laboratory of Etiology and Epidemiology, Education Bureau of Heilongjiang Province, State Key Laboratory of Frigid Zone Cardiovascular Diseases (SKLFZCD), China
| | - Qiaoyu Wang
- NHC Key Laboratory of Etiology and Epidemiology (Harbin Medical University) Heilongjiang Provincial Key Laboratory of Trace Elements and Human Health, Key Laboratory of Etiology and Epidemiology, Education Bureau of Heilongjiang Province, State Key Laboratory of Frigid Zone Cardiovascular Diseases (SKLFZCD), China; Teaching Center of Morphology, School of Basic Medical Sciences, Harbin Medical University, Harbin, Heilongjiang 150081, China
| | - Zhe Jiao
- NHC Key Laboratory of Etiology and Epidemiology (Harbin Medical University) Heilongjiang Provincial Key Laboratory of Trace Elements and Human Health, Key Laboratory of Etiology and Epidemiology, Education Bureau of Heilongjiang Province, State Key Laboratory of Frigid Zone Cardiovascular Diseases (SKLFZCD), China; Institute for Kashin Beck Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin 150081, China
| | - Sheng Wang
- Institute for Endemic Fluorosis Control, Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin, Heilongjiang 150081, China; NHC Key Laboratory of Etiology and Epidemiology (Harbin Medical University) Heilongjiang Provincial Key Laboratory of Trace Elements and Human Health, Key Laboratory of Etiology and Epidemiology, Education Bureau of Heilongjiang Province, State Key Laboratory of Frigid Zone Cardiovascular Diseases (SKLFZCD), China
| | - Xiyue Yang
- Institute for Endemic Fluorosis Control, Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin, Heilongjiang 150081, China; NHC Key Laboratory of Etiology and Epidemiology (Harbin Medical University) Heilongjiang Provincial Key Laboratory of Trace Elements and Human Health, Key Laboratory of Etiology and Epidemiology, Education Bureau of Heilongjiang Province, State Key Laboratory of Frigid Zone Cardiovascular Diseases (SKLFZCD), China
| | - Yanhui Gao
- Institute for Endemic Fluorosis Control, Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin, Heilongjiang 150081, China; NHC Key Laboratory of Etiology and Epidemiology (Harbin Medical University) Heilongjiang Provincial Key Laboratory of Trace Elements and Human Health, Key Laboratory of Etiology and Epidemiology, Education Bureau of Heilongjiang Province, State Key Laboratory of Frigid Zone Cardiovascular Diseases (SKLFZCD), China
| | - Dianjun Sun
- Institute for Endemic Fluorosis Control, Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin, Heilongjiang 150081, China; NHC Key Laboratory of Etiology and Epidemiology (Harbin Medical University) Heilongjiang Provincial Key Laboratory of Trace Elements and Human Health, Key Laboratory of Etiology and Epidemiology, Education Bureau of Heilongjiang Province, State Key Laboratory of Frigid Zone Cardiovascular Diseases (SKLFZCD), China
| | - Hongna Sun
- Institute for Endemic Fluorosis Control, Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin, Heilongjiang 150081, China; NHC Key Laboratory of Etiology and Epidemiology (Harbin Medical University) Heilongjiang Provincial Key Laboratory of Trace Elements and Human Health, Key Laboratory of Etiology and Epidemiology, Education Bureau of Heilongjiang Province, State Key Laboratory of Frigid Zone Cardiovascular Diseases (SKLFZCD), China.
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8
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Ma Y, Liu Y, Liu X, Li M, Cui J, Guan Z, Pei J, Gao Y. Fluoride exposure and prevalence of osteochondroma in drinking water Endemic fluorosis areas of Heilongjiang Province, China: a cross-sectional study. INTERNATIONAL JOURNAL OF ENVIRONMENTAL HEALTH RESEARCH 2024; 34:2863-2876. [PMID: 37921081 DOI: 10.1080/09603123.2023.2277336] [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: 09/13/2023] [Accepted: 10/26/2023] [Indexed: 11/04/2023]
Abstract
To investigate the relationship between fluoride exposure and Osteochondroma (OC) prevalence, a cross-sectional study was conducted in drinking water endemic fluorosis areas of Heilongjiang Province, China. Our study first reported that the prevalence of OC was 2.3% in drinking water endemic fluorosis areas of Heilongjiang Province, China, and no difference in gender. Logistic regression analysis found that compared to 1st quartile participants, the prevalence of OC was 73% lower in the 2nd quartile participants of WF (Water fluoride), and 3.4 times higher among the 2nd quartile UF (Urinary fluoride) participants. Our study suggests that 0.259-0.420 mg/L of WF may be considered an appropriate level for reducing OC prevalence, while UF (≥0.750 mg/L) could slightly increase the prevalence of OC. In summary, the link between fluoride and OC prevalence is complicated and needs to be further investigated in a cohort population.
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Affiliation(s)
- Yongzheng Ma
- Key Laboratory of Etiology and Epidemiology, National Health Commission & Education Bureau of Heilongjiang Province (23618504), Harbin Medical University, Harbin, Heilongjiang Province, China
- Heilongjiang Provincial Key Laboratory of Trace Elements and Human Health, Harbin Medical University, Harbin, Heilongjiang Province, China
- Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin, Heilongjiang Province, China
| | - Yang Liu
- Key Laboratory of Etiology and Epidemiology, National Health Commission & Education Bureau of Heilongjiang Province (23618504), Harbin Medical University, Harbin, Heilongjiang Province, China
- Heilongjiang Provincial Key Laboratory of Trace Elements and Human Health, Harbin Medical University, Harbin, Heilongjiang Province, China
- Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin, Heilongjiang Province, China
| | - Xiaona Liu
- Key Laboratory of Etiology and Epidemiology, National Health Commission & Education Bureau of Heilongjiang Province (23618504), Harbin Medical University, Harbin, Heilongjiang Province, China
- Heilongjiang Provincial Key Laboratory of Trace Elements and Human Health, Harbin Medical University, Harbin, Heilongjiang Province, China
- Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin, Heilongjiang Province, China
| | - Mang Li
- Key Laboratory of Etiology and Epidemiology, National Health Commission & Education Bureau of Heilongjiang Province (23618504), Harbin Medical University, Harbin, Heilongjiang Province, China
- Heilongjiang Provincial Key Laboratory of Trace Elements and Human Health, Harbin Medical University, Harbin, Heilongjiang Province, China
- Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin, Heilongjiang Province, China
| | - Jing Cui
- Key Laboratory of Etiology and Epidemiology, National Health Commission & Education Bureau of Heilongjiang Province (23618504), Harbin Medical University, Harbin, Heilongjiang Province, China
- Heilongjiang Provincial Key Laboratory of Trace Elements and Human Health, Harbin Medical University, Harbin, Heilongjiang Province, China
- Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin, Heilongjiang Province, China
| | - Zhizhong Guan
- Department of Pathology and Key Lab of Endemic and Ethnic Diseases, Ministry of Education, Guizhou Medical University, Guiyang, Guizhou Province, China
| | - Junrui Pei
- Key Laboratory of Etiology and Epidemiology, National Health Commission & Education Bureau of Heilongjiang Province (23618504), Harbin Medical University, Harbin, Heilongjiang Province, China
- Heilongjiang Provincial Key Laboratory of Trace Elements and Human Health, Harbin Medical University, Harbin, Heilongjiang Province, China
- Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin, Heilongjiang Province, China
| | - Yanhui Gao
- Key Laboratory of Etiology and Epidemiology, National Health Commission & Education Bureau of Heilongjiang Province (23618504), Harbin Medical University, Harbin, Heilongjiang Province, China
- Heilongjiang Provincial Key Laboratory of Trace Elements and Human Health, Harbin Medical University, Harbin, Heilongjiang Province, China
- Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin, Heilongjiang Province, China
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9
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Ba Y, Niu S, Feng Z, Yang S, Yu S, Shi C, Jiao X, Zhou G, Yu F. Glutamine metabolism in fluorosis: Integrated metabolomics and transcriptomics analysis. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 948:174977. [PMID: 39053535 DOI: 10.1016/j.scitotenv.2024.174977] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/12/2024] [Revised: 07/20/2024] [Accepted: 07/21/2024] [Indexed: 07/27/2024]
Abstract
OBJECTIVE To identify the potential metabolic biomarkers of fluorosis and the pathogenesis of fluorosis. METHODS Sprague Dawley rats in this study were randomly divided into fluoride exposure and control groups. In the fluoride exposure group, six offspring rats without dental fluorosis were defined as group A, and six offspring rats with dental fluorosis were defined as group C. Eight offspring rats in the control group were defined as group B. The metabolites in plasma were determined using GC-MS, with differential metabolites (DMs) identified using VIP > 1, and P < 0.05. Cluster analysis, KEGG pathway enrichment analysis and Receiver Operating Characteristic (ROC) analysis were subsequently performed. The DMs which were caused by fluoride exposure in the previous study were used to verify our results. The GSE70719 from GEO database were used to support this research at the mRNA level and in vitro experiment were selected to verify above results. RESULTS The 13 up-regulated and 4 down-regulated DMs were identified in the group A + C, the 18 up-regulated and 4 down-regulated DMs were identified in group A, and the 12 up-regulated and 2 down-regulated DMs were identified in group C. All groups showed enrichment in Aminoacyl-tRNA synthesis, D-glutamine and D-glutamate metabolism, Nitrogen metabolism, and Purine metabolism pathways. ROC analysis revealed that L-glutamine had excellent diagnostic ability for fluorosis (AUC > 0.85, P < 0.05). Changes in major DMs (L-glutamine, 4-hydroxyproline and L-alanine) were consistent with previous findings. Transcriptomic results showed the significant alteration of GLS gene in the fluoride exposure group. In vitro experiments confirmed decreased GLS and SLC1A5 genes expression. CONCLUSION L-glutamine emerges as a potential biomarker for fluorosis. Glutamine metabolism was involved in the pathogenesis of fluorosis.
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Affiliation(s)
- Yue Ba
- Department of Environmental Health, School of Public Health, Zhengzhou University, 100 Kexue Avenue, Zhengzhou 450001, China
| | - Shu Niu
- Department of Environmental Health, School of Public Health, Zhengzhou University, 100 Kexue Avenue, Zhengzhou 450001, China
| | - Zichen Feng
- Department of Environmental Health, School of Public Health, Zhengzhou University, 100 Kexue Avenue, Zhengzhou 450001, China
| | - Shuo Yang
- Department of Environmental Health, School of Public Health, Zhengzhou University, 100 Kexue Avenue, Zhengzhou 450001, China
| | - Shuiyuan Yu
- Department of Environmental Health, School of Public Health, Zhengzhou University, 100 Kexue Avenue, Zhengzhou 450001, China
| | - Chaofan Shi
- Department of Environmental Health, School of Public Health, Zhengzhou University, 100 Kexue Avenue, Zhengzhou 450001, China
| | - Xuecheng Jiao
- Puyang Center for Disease Control and Prevention, Puyang 457000, China
| | - Guoyu Zhou
- Department of Environmental Health, School of Public Health, Zhengzhou University, 100 Kexue Avenue, Zhengzhou 450001, China
| | - Fangfang Yu
- Department of Environmental Health, School of Public Health, Zhengzhou University, 100 Kexue Avenue, Zhengzhou 450001, China.
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Yu FF, Luo KT, Wang GQ, Zhao CY, Wang M, Li Q, Sha TT, Dong ZC, Zhou GY, Ba Y, Wang S, Pan D. Association between fluoride exposure and psychiatric disorders in adults. INTERNATIONAL JOURNAL OF ENVIRONMENTAL HEALTH RESEARCH 2024:1-10. [PMID: 39022824 DOI: 10.1080/09603123.2024.2378950] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/29/2024] [Accepted: 07/08/2024] [Indexed: 07/20/2024]
Abstract
To explore the association between fluoride exposure and depression / anxiety in adults, the 1,169 participants were recruited. The demographic information of participants was obtained through questionnaire survey and physical measurements. Morning urine samples were collected, and urinary fluoride (UF) level was determined. Changes in depression and anxiety levels were evaluated using the Patient Health Questionnaire-2 and General Anxiety Disorder-2 scales. The association between psychiatric disorders and UF levels was analyzed. In the total population, the prevalence of depression and anxiety were 3.17% and 4.19%, respectively. These results showed no significant association between depression / anxiety scale scores and UF levels. Logistic regression suggested no significant association between depression / anxiety levels, and UF levels, but there was an interaction between UF and income on depression. Our findings highlighted the interaction between fluoride exposure and monthly income, which may affect depression in adults.
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Affiliation(s)
- Fang-Fang Yu
- School of Public Health, Zhengzhou University, Zhengzhou, Henan, P.R. China
| | - Kang-Ting Luo
- School of Public Health, Zhengzhou University, Zhengzhou, Henan, P.R. China
| | - Guo-Qing Wang
- School of Public Health, Zhengzhou University, Zhengzhou, Henan, P.R. China
| | - Cheng-Yu Zhao
- School of Public Health, Zhengzhou University, Zhengzhou, Henan, P.R. China
| | - Miao Wang
- School of Public Health, Zhengzhou University, Zhengzhou, Henan, P.R. China
| | - Qian Li
- School of Public Health, Zhengzhou University, Zhengzhou, Henan, P.R. China
| | - Tong-Tong Sha
- School of Public Health, Zhengzhou University, Zhengzhou, Henan, P.R. China
| | - Zai-Chao Dong
- School of Public Health, Zhengzhou University, Zhengzhou, Henan, P.R. China
| | - Guo-Yu Zhou
- School of Public Health, Zhengzhou University, Zhengzhou, Henan, P.R. China
| | - Yue Ba
- School of Public Health, Zhengzhou University, Zhengzhou, Henan, P.R. China
| | - Shuai Wang
- Department of Water Resources Monitoring, Institute of Natural Resources Monitoring and Comprehensive Land Improvement of Henan Province, Zhengzhou, China
- Key Laboratory of Protection and Restoration of Water and Soil Resources in the Middle and Lower Reaches of the Yellow River Basin, MNR
| | - Deng Pan
- Department of Water Resources Monitoring, Institute of Natural Resources Monitoring and Comprehensive Land Improvement of Henan Province, Zhengzhou, China
- Key Laboratory of Protection and Restoration of Water and Soil Resources in the Middle and Lower Reaches of the Yellow River Basin, MNR
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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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12
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Yang S, Yu S, Du Y, Feng Z, Jiao X, Li Q, Wu J, Sun L, Zuo J, Fu X, Li Z, Huang H, Zhou G, Yu F, Ba Y. Correlations between bone metabolism biomarkers and fluoride exposure in adults and children. J Trace Elem Med Biol 2024; 84:127419. [PMID: 38461620 DOI: 10.1016/j.jtemb.2024.127419] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/25/2023] [Revised: 02/14/2024] [Accepted: 02/24/2024] [Indexed: 03/12/2024]
Abstract
Increased exposure to fluoride, which notably affects bone metabolism, is a global concern. However, the correlations and sensitivity of bone metabolism to fluoride remain controversial. In this cross-sectional study, 549 children (aged 7-12 years) and 504 adults (≥ 18 years old) were recruited in the high-fluoride areas of the Henan Province. Urinary fluoride (UF) level was determined using a fluoride electrode. Fasting venous blood serum was collected to measure bone metabolism biomarkers. The selected bone metabolism biomarkers for children included bone alkaline phosphatase (BALP), serum alkaline phosphatase (ALP), osteocalcin (OCN), calcitonin (CT), parathyroid hormone (PTH), phosphorus (P5+), and calcium (Ca2+). For adults, the biomarkers included ALP, CT, PTH, β-CrossLaps (β-CTX), P5+, and Ca2+. The correlations between UF and bone metabolism biomarkers were analyzed using binary logistic regression, a trend test, a generalized additive model, and threshold effect analysis. Regression analysis indicated a significant correlation between serum OCN, PTH, and UF levels in children aged 7-9 years. Serum OCN, PTH, and BALP contents were significantly correlated with UF in boys (P < 0.05). Furthermore, the interaction between age and UF affected serum P5+ and PTH (P < 0.05). The generalized additive model revealed nonlinear dose-response relationships between P5+, BALP, and UF contents in children (P < 0.05). Serum OCN level was linearly correlated with the UF concentration (P < 0.05). Similarly, a significant correlation was observed between β-CTX and UF levels in adults. In addition, significant correlations were observed between UF-age and serum Ca2+, β-CTX, and PTH contents. There was a non-linear correlation between serum Ca2+, P5+, and β- CTX and UF levels (P < 0.05). Overall, serum OCN, BALP, and P5+ levels can serve as sensitive bone metabolism biomarkers in children, while β-CTX, P5+, and Ca2+ can be considered fluoride-sensitive bone metabolism biomarkers in adults.
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Affiliation(s)
- Shuo Yang
- Department of Environmental Health, School of Public Health, Zhengzhou University, 100 Kexue Avenue, Zhengzhou, Henan 450001, China
| | - Shuiyuan Yu
- Department of Environmental Health, School of Public Health, Zhengzhou University, 100 Kexue Avenue, Zhengzhou, Henan 450001, China
| | - Yuhui Du
- Department of Environmental Health, School of Public Health, Zhengzhou University, 100 Kexue Avenue, Zhengzhou, Henan 450001, China
| | - Zichen Feng
- Department of Environmental Health, School of Public Health, Zhengzhou University, 100 Kexue Avenue, Zhengzhou, Henan 450001, China
| | - Xuecheng Jiao
- Department of Endemic Disease, Puyang Center for Disease Control and Prevention, Puyang, Henan 457000, China
| | - Qinyang Li
- Department of Environmental Health, School of Public Health, Zhengzhou University, 100 Kexue Avenue, Zhengzhou, Henan 450001, China
| | - Jingjing Wu
- Department of Environmental Health, School of Public Health, Zhengzhou University, 100 Kexue Avenue, Zhengzhou, Henan 450001, China
| | - Lei Sun
- Department of Environmental Health, School of Public Health, Zhengzhou University, 100 Kexue Avenue, Zhengzhou, Henan 450001, China
| | - Juan Zuo
- Department of Environmental Health, School of Public Health, Zhengzhou University, 100 Kexue Avenue, Zhengzhou, Henan 450001, China
| | - Xiaoli Fu
- Department of Environmental Health, School of Public Health, Zhengzhou University, 100 Kexue Avenue, Zhengzhou, Henan 450001, China
| | - Zhiyuan Li
- Department of Environmental Health, School of Public Health, Zhengzhou University, 100 Kexue Avenue, Zhengzhou, Henan 450001, China
| | - Hui Huang
- Department of Environmental Health, School of Public Health, Zhengzhou University, 100 Kexue Avenue, Zhengzhou, Henan 450001, China
| | - Guoyu Zhou
- Department of Environmental Health, School of Public Health, Zhengzhou University, 100 Kexue Avenue, Zhengzhou, Henan 450001, China
| | - Fangfang Yu
- Department of Environmental Health, School of Public Health, Zhengzhou University, 100 Kexue Avenue, Zhengzhou, Henan 450001, China.
| | - Yue Ba
- Department of Environmental Health, School of Public Health, Zhengzhou University, 100 Kexue Avenue, Zhengzhou, Henan 450001, China.
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13
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Tang X, Li H, Wang Y, Zeng L, Long L, Qu Y, Yang H, Zhang X, Li Y, Yu Y, Zhou Q, Luo M. Chronic Fluoride Exposure Induces Ovarian Dysfunction and Potential Association with Premature Ovarian Failure in Female Rats. Biol Trace Elem Res 2024; 202:3225-3236. [PMID: 37828391 DOI: 10.1007/s12011-023-03914-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/09/2023] [Accepted: 10/09/2023] [Indexed: 10/14/2023]
Abstract
Chronic fluorosis has been widely investigated for its adverse effects on skeletal and neurological health; however, its impact on reproductive health, especially in females, remains underexplored. In this study, female Sprague-Dawley rats were exposed to different fluoride concentrations (0.75, 50, and 100 mg/L) in their drinking water for six months. Dental fluorosis and increased urinary fluoride content were observed in fluoride-exposed rats, reflecting fluoride accumulation and exposure levels. Chronic fluorosis resulted in reduced ovary organ coefficient, indicating harmful effects on ovarian tissue. Additionally, the number of ovarian primordial and primary/secondary follicles decreased, while the number of atresia follicles increased. Furthermore, chronic fluorosis led to disrupted estrous cycles. Hormonal analysis revealed altered secretion of estrogen, progesterone, anti-Müllerian hormone, luteinizing hormone, follicular stimulating hormone, and inhibin B in response to fluoride exposure. Ultrastructural observation of ovarian granulosa cells showed evidence of apoptosis, which was further confirmed by flow cytometry. Caspase-3 activity was increased, and ATP levels were decreased, suggesting mitochondrial impairment and apoptosis induction. The mRNA and protein expression of BMP15 and GDF9, essential regulators of ovarian function, significantly decreased with increasing fluoride concentration. Furthermore, gene expression analysis identified a panel of premature ovarian failure-related genes that were downregulated in fluoride-exposed rat ovaries. These findings suggest that chronic fluoride exposure may contribute to ovarian dysfunction and possibly the pathogenesis of premature ovarian failure. Understanding the toxicological effects of chronic fluoride exposure on ovarian function is essential for identifying potential environmental risk factors affecting female reproductive health.
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Affiliation(s)
- Xiaoke Tang
- Department of Obstetrics and Gynecology, Zhengzhou Central Hospital Affiliated to Zhengzhou University, Zhengzhou, China
| | - Hongjuan Li
- Department of Obstetrics and Gynecology, Zhengzhou Central Hospital Affiliated to Zhengzhou University, Zhengzhou, China
| | - Yali Wang
- Department of Obstetrics and Gynecology, Zhengzhou Central Hospital Affiliated to Zhengzhou University, Zhengzhou, China
| | - Li Zeng
- Department of Obstetrics and Gynecology, The First Affiliated Hospital of Guizhou Traditional Chinese Medicine University, Guiyang, China
| | - Ling Long
- Department of Obstetrics and Gynecology, Tongliang District People's Hospital, Chongqing, China
| | - Yajun Qu
- Department of Obstetrics and Gynecology, Zhengzhou Central Hospital Affiliated to Zhengzhou University, Zhengzhou, China
| | - Hui Yang
- Department of Obstetrics and Gynecology, Zhengzhou Central Hospital Affiliated to Zhengzhou University, Zhengzhou, China
| | - Xiaolin Zhang
- Department of Obstetrics and Gynecology, Zhengzhou Central Hospital Affiliated to Zhengzhou University, Zhengzhou, China
| | - Yanmin Li
- Department of Obstetrics and Gynecology, Zhengzhou Central Hospital Affiliated to Zhengzhou University, Zhengzhou, China
| | - Yanni Yu
- Department of Pathology, Guizhou Medical University, Guiyang, China
| | - Qi Zhou
- Department of Obstetrics and Gynecology, The First Affiliated Hospital of Guizhou Traditional Chinese Medicine University, Guiyang, China.
| | - Man Luo
- Department of Obstetrics and Gynecology, Zhengzhou Central Hospital Affiliated to Zhengzhou University, Zhengzhou, China.
- Metabolic Disease Research Center, Zhengzhou Central Hospital Affiliated to Zhengzhou University, Zhengzhou, China.
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14
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Gamarra J, Álvarez-Ordaz D, Molina-Frechero N, Sánchez-Pérez L, Pierdant-Rodriguez A, Isiordia-Espinoza MA, Espinosa-Cristóbal LF, Gómez Palacio-Gastelum M, González-González R, Salas-Pacheco J, Bologna-Molina R. Association between fluoride intake from drinking water and severity of dental fluorosis in Northern and Western Mexico: systematic review and meta-analysis. BMC Oral Health 2024; 24:708. [PMID: 38898439 PMCID: PMC11186227 DOI: 10.1186/s12903-024-04472-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2024] [Accepted: 06/10/2024] [Indexed: 06/21/2024] Open
Abstract
BACKGROUND Dental fluorosis (DF) is caused by excessive exposure to fluoride during odontogenesis and leads to various changes in the development of tooth enamel. Some regions in Mexico are considered endemic fluorosis zones due to the high fluoride content in drinking water. The objective of this study was to perform a systematic review and meta-analysis to identify the association between the concentration of fluoride in drinking water and the severity of dental fluorosis in northern and western Mexico. METHODS This protocol was registered in the PROSPERO database (ID: CRD42023401519). The search for information was carried out in the PubMed/Medline, Scopus, SpringerLink, and Google Scholar databases between January 2015 and October 2023. The overall relative risk was calculated using the inverse of variance approach with the random effects method. The RoB 2.0 tool was used to construct risk plots. RESULTS Eleven articles were analyzed qualitatively, and most of the included studies presented at least one level of DF severity; six articles were analyzed quantitatively, dividing them into two regions. In North region it was observed a higher prevalence of severe TF cases, corresponding to ≥ TF 5 category (4.78) [3.55, 6.42]. In the West region, most of the included studies presented a higher prevalence of less severe cases, corresponding to ≤ TF 4, in comparison with the North region (0.01) [0.00, 0.52], interpreted as a protective effect. CONCLUSION The concentrations of fluorides in drinking water are reportedly high in these regions and are directly related to the severity of dental fluorosis experienced by the inhabitants. In the Northern region exists a major concentration of fluoride in drinking water compared with the Western region as well as a prevalence of higher severity cases of dental fluorosis.
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Affiliation(s)
- José Gamarra
- Master's Degree in Dental Sciences, Universidad Autónoma Metropolitana Unidad Xochimilco, Mexico City, Mexico
| | - David Álvarez-Ordaz
- Master's Degree in Dental Sciences, Universidad Autónoma Metropolitana Unidad Xochimilco, Mexico City, Mexico
| | - Nelly Molina-Frechero
- Master's Degree in Dental Sciences, Universidad Autónoma Metropolitana Unidad Xochimilco, Mexico City, Mexico
| | - Leonor Sánchez-Pérez
- Master's Degree in Dental Sciences, Universidad Autónoma Metropolitana Unidad Xochimilco, Mexico City, Mexico
| | - Alberto Pierdant-Rodriguez
- Master's Degree in Dental Sciences, Universidad Autónoma Metropolitana Unidad Xochimilco, Mexico City, Mexico
| | - Mario Alberto Isiordia-Espinoza
- Medical Sciences Research Institute. Clinical Department, Centro Universitario Los Altos, Universidad de Guadalajara (UdG) Tepatitlán de Morelos, Jalisco, Mexico
| | - León Francisco Espinosa-Cristóbal
- Master's Degree in Dental Sciences, Institute of Biomedical Sciences, Universidad Autónoma Ciudad Juárez, Ciudad Juárez, Chihuahua, 32310, Mexico
| | | | - Rogelio González-González
- Universidad Juarez del Estado de Durango, Durango, Mexico
- Universidad de la República, Montevideo, Uruguay
| | | | - Ronell Bologna-Molina
- Universidad Juarez del Estado de Durango, Durango, Mexico.
- Universidad de la República, Montevideo, Uruguay.
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15
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Cheng A, Luo H, Fan B, Xiang Q, Nie Z, Feng S, Qiao Y, Wu Y, Zhu Q, Liu R, Song X, Li X, Zhang J. Fluoride induces pyroptosis via IL-17A-mediated caspase-1/11-dependent pathways and Bifidobacterium intervention in testis. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 926:172036. [PMID: 38554964 DOI: 10.1016/j.scitotenv.2024.172036] [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: 02/29/2024] [Revised: 03/25/2024] [Accepted: 03/26/2024] [Indexed: 04/02/2024]
Abstract
Fluoride, a ubiquitous environmental pollutant, poses a significant public health threat. Our previous study revealed a correlation between fluoride-induced testicular pyroptosis and male reproductive dysfunction. However, the underlying mechanism remains unclear. Wild-type and interleukin 17A knockout mice were exposed to sodium fluoride (100 mg/L) in deionized drinking water for 18 weeks. Bifidobacterium intervention (1 × 109 CFU/mL, 0.2 mL/day, administered via gavage) commenced in the 10th week. Sperm quality, testicular morphology, key pyroptosis markers, spermatogenesis key genes, IL-17A signaling pathway, and pyroptosis pathway related genes were determined. The results showed that fluoride reduced sperm quality, damaged testicular morphology, affected spermatogenesis, elevated IL-17A levels, and induced testicular pyroptosis. Bifidobacterium intervention alleviated adverse reproductive outcomes. Fluoride-activated testicular pyroptosis through both typical and atypical pathways, with IL-17A involvement. Bifidobacterium supplementation attenuated pyroptosis by downregulating IL-17A, inhibiting NLRP3 and PYRIN-mediated caspase-1 and caspase-11 dependent pathways in testis, thereby alleviating fluoride-induced male reproductive damage. In summary, this study uncovers the mechanism underlying fluorine-induced testicular pyroptosis and illustrates the novel protecting feature of Bifidobacterium against fluoride-induced harm to male reproduction, along with its potential regulatory mechanism. These results provide fresh perspectives on treating male reproductive dysfunction resulting from fluoride or other environmental toxins.
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Affiliation(s)
- Ao Cheng
- College of Veterinary Medicine, Shanxi Agricultural University, Taigu, Shanxi 030801, China
| | - Huifeng Luo
- College of Veterinary Medicine, Shanxi Agricultural University, Taigu, Shanxi 030801, China
| | - Bingchao Fan
- College of Veterinary Medicine, Shanxi Agricultural University, Taigu, Shanxi 030801, China
| | - Qing Xiang
- College of Veterinary Medicine, Shanxi Agricultural University, Taigu, Shanxi 030801, China
| | - Zhaochen Nie
- College of Veterinary Medicine, Shanxi Agricultural University, Taigu, Shanxi 030801, China
| | - Shuang Feng
- College of Veterinary Medicine, Shanxi Agricultural University, Taigu, Shanxi 030801, China
| | - Yurou Qiao
- College of Veterinary Medicine, Shanxi Agricultural University, Taigu, Shanxi 030801, China
| | - Yue Wu
- College of Veterinary Medicine, Shanxi Agricultural University, Taigu, Shanxi 030801, China
| | - Qianlong Zhu
- College of Veterinary Medicine, Shanxi Agricultural University, Taigu, Shanxi 030801, China
| | - Rongxiu Liu
- College of Veterinary Medicine, Shanxi Agricultural University, Taigu, Shanxi 030801, China
| | - Xiaochao Song
- College of Veterinary Medicine, Shanxi Agricultural University, Taigu, Shanxi 030801, China
| | - Xiang Li
- College of Veterinary Medicine, Shanxi Agricultural University, Taigu, Shanxi 030801, China
| | - Jianhai Zhang
- College of Veterinary Medicine, Shanxi Agricultural University, Taigu, Shanxi 030801, China.
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Xu P, Xing H, Ma Y, Ding X, Li T, Zhang Y, Liu L, Ma J, Niu Q. Fluoride Induces Neurocytotoxicity by Disrupting Lysosomal Iron Metabolism and Membrane Permeability. Biol Trace Elem Res 2024:10.1007/s12011-024-04226-0. [PMID: 38760610 DOI: 10.1007/s12011-024-04226-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/12/2024] [Accepted: 05/06/2024] [Indexed: 05/19/2024]
Abstract
The detrimental effects of fluoride on neurotoxicity have been widely recorded, yet the detailed mechanisms underlying these effects remain unclear. This study explores lysosomal iron metabolism in fluoride-related neurotoxicity, with a focus on the Steap3/TRPML1 axis. Utilizing sodium fluoride (NaF)-treated human neuroblastoma (SH-SY5Y) and mouse hippocampal neuron (HT22) cell lines, our research demonstrates that NaF enhances the accumulation of ferrous ions (Fe2+) in these cells, disrupting lysosomal iron metabolism through the Steap3/TRPML1 axis. Notably, NaF exposure upregulated ACSL4 and downregulated GPX4, accompanied by reduced glutathione (GSH) levels and superoxide dismutase (SOD) activity and increased malondialdehyde (MDA) levels. These changes indicate increased vulnerability to ferroptosis within neuronal cells. The iron chelator deferoxamine (DFO) mitigates this disruption. DFO binds to lysosomal Fe2+ and inhibits the Steap3/TRPML1 axis, restoring normal lysosomal iron metabolism, preventing lysosomal membrane permeabilization (LMP), and reducing neuronal cell ferroptosis. Our findings suggest that interference in lysosomal iron metabolism may mitigate fluoride-induced neurotoxicity, underscoring the critical role of the Steap3/TRPML1 axis in this pathological process.
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Affiliation(s)
- Panpan Xu
- Department of Preventive Medicine, School of Medicine, Shihezi University, North 2nd Road, Shihezi, Xinjiang, 832000, People's Republic of China
- Key Laboratory for Prevention and Control of Emerging Infectious Diseases and Public Health Security, the Xinjiang Production and Construction Corps, Shihezi, Xinjiang, People's Republic of China
- Key Laboratory of Xinjiang Endemic and Ethnic Diseases (Ministry of Education), School of Medicine, Shihezi University, Shihezi, Xinjiang, People's Republic of China
- NHC Key Laboratory of Prevention and Treatment of Central Asia High Incidence DiseasesFirst Affiliated Hospital, School of Medicine, Shihezi University, Shihezi, China
| | - Hengrui Xing
- Department of Preventive Medicine, School of Medicine, Shihezi University, North 2nd Road, Shihezi, Xinjiang, 832000, People's Republic of China
- Key Laboratory for Prevention and Control of Emerging Infectious Diseases and Public Health Security, the Xinjiang Production and Construction Corps, Shihezi, Xinjiang, People's Republic of China
- Key Laboratory of Xinjiang Endemic and Ethnic Diseases (Ministry of Education), School of Medicine, Shihezi University, Shihezi, Xinjiang, People's Republic of China
- NHC Key Laboratory of Prevention and Treatment of Central Asia High Incidence DiseasesFirst Affiliated Hospital, School of Medicine, Shihezi University, Shihezi, China
| | - Yue Ma
- Department of Preventive Medicine, School of Medicine, Shihezi University, North 2nd Road, Shihezi, Xinjiang, 832000, People's Republic of China
- Key Laboratory for Prevention and Control of Emerging Infectious Diseases and Public Health Security, the Xinjiang Production and Construction Corps, Shihezi, Xinjiang, People's Republic of China
- Key Laboratory of Xinjiang Endemic and Ethnic Diseases (Ministry of Education), School of Medicine, Shihezi University, Shihezi, Xinjiang, People's Republic of China
- NHC Key Laboratory of Prevention and Treatment of Central Asia High Incidence DiseasesFirst Affiliated Hospital, School of Medicine, Shihezi University, Shihezi, China
| | - Xueman Ding
- Department of Preventive Medicine, School of Medicine, Shihezi University, North 2nd Road, Shihezi, Xinjiang, 832000, People's Republic of China
- Key Laboratory for Prevention and Control of Emerging Infectious Diseases and Public Health Security, the Xinjiang Production and Construction Corps, Shihezi, Xinjiang, People's Republic of China
- Key Laboratory of Xinjiang Endemic and Ethnic Diseases (Ministry of Education), School of Medicine, Shihezi University, Shihezi, Xinjiang, People's Republic of China
- NHC Key Laboratory of Prevention and Treatment of Central Asia High Incidence DiseasesFirst Affiliated Hospital, School of Medicine, Shihezi University, Shihezi, China
| | - Tingting Li
- Department of Preventive Medicine, School of Medicine, Shihezi University, North 2nd Road, Shihezi, Xinjiang, 832000, People's Republic of China
- Key Laboratory for Prevention and Control of Emerging Infectious Diseases and Public Health Security, the Xinjiang Production and Construction Corps, Shihezi, Xinjiang, People's Republic of China
- Key Laboratory of Xinjiang Endemic and Ethnic Diseases (Ministry of Education), School of Medicine, Shihezi University, Shihezi, Xinjiang, People's Republic of China
- NHC Key Laboratory of Prevention and Treatment of Central Asia High Incidence DiseasesFirst Affiliated Hospital, School of Medicine, Shihezi University, Shihezi, China
| | - Yue Zhang
- Department of Preventive Medicine, School of Medicine, Shihezi University, North 2nd Road, Shihezi, Xinjiang, 832000, People's Republic of China
- Key Laboratory for Prevention and Control of Emerging Infectious Diseases and Public Health Security, the Xinjiang Production and Construction Corps, Shihezi, Xinjiang, People's Republic of China
- Key Laboratory of Xinjiang Endemic and Ethnic Diseases (Ministry of Education), School of Medicine, Shihezi University, Shihezi, Xinjiang, People's Republic of China
- NHC Key Laboratory of Prevention and Treatment of Central Asia High Incidence DiseasesFirst Affiliated Hospital, School of Medicine, Shihezi University, Shihezi, China
| | - Li Liu
- Department of Preventive Medicine, School of Medicine, Shihezi University, North 2nd Road, Shihezi, Xinjiang, 832000, People's Republic of China
- Key Laboratory for Prevention and Control of Emerging Infectious Diseases and Public Health Security, the Xinjiang Production and Construction Corps, Shihezi, Xinjiang, People's Republic of China
- Key Laboratory of Xinjiang Endemic and Ethnic Diseases (Ministry of Education), School of Medicine, Shihezi University, Shihezi, Xinjiang, People's Republic of China
- NHC Key Laboratory of Prevention and Treatment of Central Asia High Incidence DiseasesFirst Affiliated Hospital, School of Medicine, Shihezi University, Shihezi, China
| | - Jiaolong Ma
- Department of Preventive Medicine, School of Medicine, Shihezi University, North 2nd Road, Shihezi, Xinjiang, 832000, People's Republic of China.
- Key Laboratory for Prevention and Control of Emerging Infectious Diseases and Public Health Security, the Xinjiang Production and Construction Corps, Shihezi, Xinjiang, People's Republic of China.
- Key Laboratory of Xinjiang Endemic and Ethnic Diseases (Ministry of Education), School of Medicine, Shihezi University, Shihezi, Xinjiang, People's Republic of China.
- NHC Key Laboratory of Prevention and Treatment of Central Asia High Incidence DiseasesFirst Affiliated Hospital, School of Medicine, Shihezi University, Shihezi, China.
| | - Qiang Niu
- Department of Preventive Medicine, School of Medicine, Shihezi University, North 2nd Road, Shihezi, Xinjiang, 832000, People's Republic of China.
- Key Laboratory for Prevention and Control of Emerging Infectious Diseases and Public Health Security, the Xinjiang Production and Construction Corps, Shihezi, Xinjiang, People's Republic of China.
- Key Laboratory of Xinjiang Endemic and Ethnic Diseases (Ministry of Education), School of Medicine, Shihezi University, Shihezi, Xinjiang, People's Republic of China.
- NHC Key Laboratory of Prevention and Treatment of Central Asia High Incidence DiseasesFirst Affiliated Hospital, School of Medicine, Shihezi University, Shihezi, China.
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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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18
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Yu FF, Yu SY, Duan LZ, Yang S, Hou XB, Du YH, Gao MH, Zuo J, Sun L, Fu XL, Li ZY, Huang H, Zhou GY, Jia DL, Chen RQ, Ba Y. Proteomics Sequencing Reveals the Role of TGF-β Signaling Pathway in the Peripheral Blood of Offspring Rats Exposed to Fluoride. Biol Trace Elem Res 2024; 202:2100-2110. [PMID: 37582921 DOI: 10.1007/s12011-023-03805-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/11/2023] [Accepted: 08/06/2023] [Indexed: 08/17/2023]
Abstract
The underlying mechanism of fluorosis has not been fully elucidated. The purpose of this study was to explore the mechanism of fluorosis induced by sodium fluoride (NaF) using proteomics. Six offspring rats exposed to fluoride without dental fluorosis were defined as group A, 8 offspring rats without fluoride exposure were defined as control group B, and 6 offspring rats exposed to fluoride with dental fluorosis were defined as group C. Total proteins from the peripheral blood were extracted and then separated using liquid chromatography-tandem mass spectrometry. The identified criteria for differentially expressed proteins were fold change > 1.2 or < 0.83 and P < 0.05. Gene Ontology function annotation and Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway enrichment analysis were performed using the oeCloud tool. The 177 upregulated and 22 downregulated proteins were identified in the A + C vs. B group. KEGG pathway enrichment analysis revealed that transforming growth factor-β (TGF-β) signaling pathway significantly enriched. PPI network constructed using Cytoscape confirmed RhoA may play a crucial role. The KEGG results of genes associated with fluoride and genes associated with both fluoride and inflammation in the GeneCards database also showed that TGF-β signaling pathway was significantly enriched. The immunofluorescence in HPA database showed that the main expression sites of RhoA are plasma membrane and cytosol, while the main expression site of Fbn1 is the Golgi apparatus. In conclusion, long-term NaF intake may cause inflammatory response in the peripheral blood of rats by upregulating TGF-β signaling pathway, in which RhoA may play a key role.
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Affiliation(s)
- Fang-Fang Yu
- Department of Environmental Health, School of Public Health, Environment and Health Innovation Team, Zhengzhou University, Zhengzhou, Henan, 450001, People's Republic of China
| | - Shui-Yuan Yu
- Department of Environmental Health, School of Public Health, Environment and Health Innovation Team, Zhengzhou University, Zhengzhou, Henan, 450001, People's Republic of China
| | - Lei-Zhen Duan
- Zhengzhou Central Hospital Affiliated to Zhengzhou University, Zhengzhou, Henan, China
| | - Shuo Yang
- Department of Environmental Health, School of Public Health, Environment and Health Innovation Team, Zhengzhou University, Zhengzhou, Henan, 450001, People's Republic of China
| | - Xiang-Bo Hou
- Department of Environmental Health, School of Public Health, Environment and Health Innovation Team, Zhengzhou University, Zhengzhou, Henan, 450001, People's Republic of China
| | - Yu-Hui Du
- Department of Environmental Health, School of Public Health, Environment and Health Innovation Team, Zhengzhou University, Zhengzhou, Henan, 450001, People's Republic of China
| | - Ming-Hui Gao
- Department of Environmental Health, School of Public Health, Environment and Health Innovation Team, Zhengzhou University, Zhengzhou, Henan, 450001, People's Republic of China
| | - Juan Zuo
- Department of Environmental Health, School of Public Health, Environment and Health Innovation Team, Zhengzhou University, Zhengzhou, Henan, 450001, People's Republic of China
| | - Lei Sun
- Department of Environmental Health, School of Public Health, Environment and Health Innovation Team, Zhengzhou University, Zhengzhou, Henan, 450001, People's Republic of China
| | - Xiao-Li Fu
- Department of Environmental Health, School of Public Health, Environment and Health Innovation Team, Zhengzhou University, Zhengzhou, Henan, 450001, People's Republic of China
| | - Zhi-Yuan Li
- Department of Environmental Health, School of Public Health, Environment and Health Innovation Team, Zhengzhou University, Zhengzhou, Henan, 450001, People's Republic of China
| | - Hui Huang
- Department of Environmental Health, School of Public Health, Environment and Health Innovation Team, Zhengzhou University, Zhengzhou, Henan, 450001, People's Republic of China
| | - Guo-Yu Zhou
- Department of Environmental Health, School of Public Health, Environment and Health Innovation Team, Zhengzhou University, Zhengzhou, Henan, 450001, People's Republic of China
| | - Dao-Li Jia
- Outpatient Department, Zhengyang County People's Hospital, Zhumadian, Henan, China
| | - Rui-Qin Chen
- Jinshui District Center for Disease Control and Prevention, Zhengzhou, Henan, China
| | - Yue Ba
- Department of Environmental Health, School of Public Health, Environment and Health Innovation Team, Zhengzhou University, Zhengzhou, Henan, 450001, People's Republic of China.
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Yang H, Hou B, Ye L, Xu S, Xin H, Zhang S. Groundwater chemical evolution characteristics and human health risk assessment in Shicheng County, Jiangxi Province. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024; 31:37337-37355. [PMID: 38771539 DOI: 10.1007/s11356-024-33730-y] [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: 01/16/2024] [Accepted: 05/15/2024] [Indexed: 05/22/2024]
Abstract
Groundwater plays a pivotal role in the water resources of Shicheng County; however, the issue of excessive fluoride content in groundwater and its associated health risks often goes unnoticed. Groundwater assumes a crucial role in the hydrological dynamics of Shicheng County; nevertheless, the matter concerning elevated levels of fluoride within groundwater and its accompanying health hazards frequently evades attention. The hydrogeochemical analysis, obscure comprehensive water quality assessment based on cloud model, and probabilistic human health risk assessment using Monte Carlo simulation were conducted on 34 collected water samples. The findings indicate that the predominant groundwater hydrochemical types are SO4·Cl-Na and HCO3-Na. The processes of rock weathering and cation exchange play crucial roles in influencing water chemistry. Groundwater samples generally exhibit elevated concentrations of F-, surpassing the drinking water standard, primarily attributed to mineral dissolution. The concentrations of F- in more than 52.94% and 23.53% of the groundwater samples exceeded the acceptable non-carcinogenic risk limits for children and adults, respectively. Considering the inherent uncertainty in model parameters, it is anticipated that both children and adults will have a probability exceeding 49.36% and 30.50%, respectively, of being exposed to elevated levels of F ions in groundwater. The utilization of stochastic simulations, in contrast to deterministic methods, enables a more precise depiction of health risks. The outcomes derived from this investigation possess the potential to assist policymakers in formulating strategies aimed at ensuring the provision of secure domestic water supplies.
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Affiliation(s)
- Haitao Yang
- Institute of Marine Science and Technology, Shandong University, Qingdao, 266237, Shandong, China
| | - Baoquan Hou
- Tianjin Municipal Engineering Design and Research Institute, Tianjin, 300051, China
| | - Lin Ye
- Institute of Marine Science and Technology, Shandong University, Qingdao, 266237, Shandong, China.
- Institute of Geological Survey, China University of Geosciences, Lumo Road No. 388, Wuhan, Hubei Province, China.
| | - Shuang Xu
- Guangxi Normal University, Guilin, 541006, Guangxi, China
| | - Haitao Xin
- Ningxia Technical College of Wine and Desertification Prevention, Yinchuan, 750199, Ningxia, China
| | - Sijia Zhang
- Sinosteel Maanshan General Institute of Mining Research, Maanshan, 243000, Anhui, China
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20
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Ucuncu MK, Guven K, Yazicioglu O. Investigation of the constituents of commercially available toothpastes. Int J Dent Hyg 2024. [PMID: 38659161 DOI: 10.1111/idh.12805] [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: 01/19/2023] [Revised: 03/13/2024] [Accepted: 03/30/2024] [Indexed: 04/26/2024]
Abstract
OBJECTIVES Toothpaste plays a pivotal role in oral and dental hygiene. This cross-sectional study not only investigates the constituents of toothpastes available in the market and their frequency across different brands but also delves into the potential side effects, irritations, or unfavourable outcomes of these constituents, emphasizing the broader health and environmental implications. METHODS The largest of the five major chain markets in each district of Istanbul was visited, and adult toothpastes were included in this study. All the constituents that make up the toothpaste were individually recorded in an Excel database. Subsequently, literature regarding the purposes, toxic and potential side effects of each ingredient was gathered using databases such as Google Scholar, PubMed and ScienceDirect. The percentages of these ingredients' occurrence among all the toothpastes were calculated, and the ingredients were categorized into 15 distinct groups based on their usage purposes. RESULTS There were 160 different varieties of toothpaste belonging to 19 different brands on the market shelves. Although a total of 244 different ingredients were identified, only 78 of them were included in the study. Among the analysed toothpaste types, 105 of them were found to contain 1450 ppm fluoride, whilst 26 toothpaste variants were discovered to have fluoride levels below this value. Among the various ingredients analysed, particular attention was drawn to commonly debated compounds in oral care products. Specifically, titanium dioxide was found in 68% (n = 111) of the varieties, sodium lauryl sulphate in 67% (n = 108) and paraben in 2% (n = 4), respectively. CONCLUSION Whilst certain ingredients may raise concerns for potential side effects and health considerations within the human body, the toothpaste has long been regarded as an indispensable tool for maintaining optimal oral and dental health. However, gaining a deeper understanding and conducting research on each constituent that comprises the toothpaste, as well as raising awareness in this regard, holds significant importance for human health.
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Affiliation(s)
- Musa Kazim Ucuncu
- Department of Restorative Dentistry, Faculty of Dentistry, Altinbas University, Istanbul, Turkey
| | | | - Oktay Yazicioglu
- Department of Restorative Dentistry, Faculty of Dentistry, Istanbul University, Istanbul, Turkey
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Wu Y, Cheng A, Wang Y, Zhu Q, Ren X, Lu Y, Shi E, Zhuang C, Wang J, Liang C, Zhang J. Bifidobacterium Relieved Fluoride-Induced Hepatic and Ileal Toxicity via Inflammatory Response and Bile Acid Transporters in Mice. Foods 2024; 13:1011. [PMID: 38611317 PMCID: PMC11012040 DOI: 10.3390/foods13071011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2024] [Revised: 03/21/2024] [Accepted: 03/22/2024] [Indexed: 04/14/2024] Open
Abstract
Fluoride is a pervasive environmental contaminant. Prolonged excessive fluoride intake can inflict severe damage on the liver and intestines. Previous 16S rDNA sequencing revealed a decrease in ileal Bifidobacterium abundance during fluoride-induced hepatointestinal injury. Hence, this work aimed to investigate the possible mitigating function of Bifidobacterium on hepatointestinal injury caused by fluoride. Thirty-six 6-week-old C57BL/6J mice (equally divided between males and females) were allotted randomly to three groups: Ctrl group (distilled water), NaF group, and NaF + Ba group (100 mg/L NaF distilled water). After 10 weeks, the mice were given 1 × 109 CFU/mL Bifidobacterium solution (0.2 mL/day) intragastrically in the NaF + Ba group for 8 weeks, and the mice in other groups were given the same amount of distilled water. Dental damage, bone fluoride content, blood routine, liver and intestinal microstructure and function, inflammatory factors, and regulatory cholic acid transporters were examined. Our results showed that fluoride increased glutamic-oxalacetic transaminase (GOT), glutamic-pyruvic transaminase (GPT) activities, and the levels of lipopolysaccharide (LPS), IL-1β, IL-6, TNF-α, and IL-10 levels in serum, liver, and ileum. However, Bifidobacterium intervention alleviated fluoride-induced changes in the above indicators. In addition, Bifidobacterium reduced the mRNA expression levels of bile acid transporters ASBT, IBABP, OST-α, and OST-β in the ileum. In summary, Bifidobacterium supplementation relieved fluoride-induced hepatic and ileal toxicity via an inflammatory response and bile acid transporters in the liver and ileum of mice.
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Affiliation(s)
- Yue Wu
- College of Veterinary Medicine, Shanxi Agricultural University, 1 Mingxian South Road, Taigu 030801, China
| | - Ao Cheng
- College of Veterinary Medicine, Shanxi Agricultural University, 1 Mingxian South Road, Taigu 030801, China
| | - Yu Wang
- College of Veterinary Medicine, Inner Mongolia Agricultural University, Huhehot 010018, China
| | - Qianlong Zhu
- College of Veterinary Medicine, Shanxi Agricultural University, 1 Mingxian South Road, Taigu 030801, China
| | - Xuting Ren
- College of Veterinary Medicine, Shanxi Agricultural University, 1 Mingxian South Road, Taigu 030801, China
| | - Yiguang Lu
- College of Veterinary Medicine, Shanxi Agricultural University, 1 Mingxian South Road, Taigu 030801, China
| | - Erbao Shi
- College of Veterinary Medicine, Shanxi Agricultural University, 1 Mingxian South Road, Taigu 030801, China
| | - Cuicui Zhuang
- College of Veterinary Medicine, Shanxi Agricultural University, 1 Mingxian South Road, Taigu 030801, China
| | - Jundong Wang
- College of Veterinary Medicine, Shanxi Agricultural University, 1 Mingxian South Road, Taigu 030801, China
| | - Chen Liang
- College of Animal Science, Shanxi Agricultural University, Taigu 030801, China
| | - Jianhai Zhang
- College of Veterinary Medicine, Shanxi Agricultural University, 1 Mingxian South Road, Taigu 030801, China
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22
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Wang C, Wang J, Fan J, Yang J, Xu X, Jiang Y, Sun J, Lu R, Chen J. Prevalence and risk factors of dental fluorosis among children aged 8-12 years in Shandong province of China. INTERNATIONAL JOURNAL OF ENVIRONMENTAL HEALTH RESEARCH 2024; 34:1824-1834. [PMID: 37578076 DOI: 10.1080/09603123.2023.2247364] [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: 05/26/2023] [Accepted: 08/09/2023] [Indexed: 08/15/2023]
Abstract
This study was to investigate the prevalence and severity of children's dental fluorosis (DF) in Shandong and identified the potential risk factors for DF. A total of 87 villages in Shandong were investigated to calculate the prevalence of DF and Community Fluorosis Index (CFI) in 2018-2019. Six hundred and seventy children were enrolled to identify the potential risk factors using univariate and multivariate logistic regressions. Goodman-Kruskal Gamma was used to explore the factors related to the severity of DF. In 87 villages, 1249 of 8700 (14.36%) children still have DF. The prevalence of DF in most villages was below 40% in 2018-2019. Water fluorine concentration when selected for the study and urinary fluorine concentration were related to the risk of DF (P < 0.001). Some eating habits, like lower frequency of eating fresh vegetables, eggs, and beans, were associated with the risk of DF (P < 0.001). The high water fluorine concentration, and lower frequency of eating fresh vegetables, eggs, and beans were also related to the severity of DF (P < 0.001). DF in children in Shandong province is still a common endemic disease. This study tries to provide a useful guide for the prevention and control of DF.
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Affiliation(s)
- Chunlei Wang
- Department of General Surgery, Suzhou Medical College of Soochow University, Affiliated Kunshan Hospital of Jiangsu University, Kunshan, Jiangsu, China
- Shandong Institute of Prevention and Control for Endemic Disease, Jinan, Shandong, China
| | - Jing Wang
- Qingdao Municipal Center for Disease Control and Prevention, Qingdao Institute of Preventive Medicine, Qingdao, Shandong, China
| | - Jingli Fan
- Shandong Institute of Prevention and Control for Endemic Disease, Jinan, Shandong, China
| | - Jie Yang
- Department of General Surgery, Suzhou Medical College of Soochow University, Affiliated Kunshan Hospital of Jiangsu University, Kunshan, Jiangsu, China
| | - Xinming Xu
- Department of General Surgery, Suzhou Medical College of Soochow University, Affiliated Kunshan Hospital of Jiangsu University, Kunshan, Jiangsu, China
| | - Yiquan Jiang
- Department of General Surgery, Suzhou Medical College of Soochow University, Affiliated Kunshan Hospital of Jiangsu University, Kunshan, Jiangsu, China
| | - Jun Sun
- Department of General Surgery, Suzhou Medical College of Soochow University, Affiliated Kunshan Hospital of Jiangsu University, Kunshan, Jiangsu, China
| | - Rongzhu Lu
- Department of Preventive Medicine and Public Health Laboratory Sciences, School of Medicine, Jiangsu University, Zhenjiang, Jiangsu, China
| | - Jian Chen
- Department of General Surgery, Suzhou Medical College of Soochow University, Affiliated Kunshan Hospital of Jiangsu University, Kunshan, Jiangsu, China
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23
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Jinyi L, Keyu Y, Shanshan D, Shuyang H, Ruirui L, Qingyu G, Fei L. ERS Mediated by GRP-78/PERK/CHOP Signaling Is Involved in Fluoride-Induced Ameloblast Apoptosis. Biol Trace Elem Res 2024; 202:1103-1114. [PMID: 37410266 DOI: 10.1007/s12011-023-03746-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/24/2023] [Accepted: 06/24/2023] [Indexed: 07/07/2023]
Abstract
Fluoride can be widely ingested from the environment, and its excessive intake could result in adverse effects. Dental fluorosis is an early sign of fluoride toxicity which can cause esthetic and functional problems. Though apoptosis in ameloblasts is one of the potential mechanisms, the specific signal cascade is in-conclusive. High-throughput sequencing and molecular biological techniques were used in this study to explore the underlying pathogenesis of dental fluorosis, for its prevention and treatment. A fluorosis cell model was established. Viability and apoptosis rate of mouse ameloblast-derived cell line (LS8 cells) was measured using cell counting kit-8 (CCK-8) assay and flow cytometry analysis. Cells were harvested with or without 2-mM sodium fluoride (NaF) stimulation for high-throughput sequencing. Based on the sequencing data, subcellular structures, endoplasmic reticulum stress (ERS), and apoptosis related biomarkers were verified using transmission electron microscopy, quantitative real-time polymerase chain reaction, and Western blotting techniques. Expression of ERS markers, apoptosis related proteins, and enamel formation enzymes were detected using Western blotting after addition of 4-phenylbutyrate (4-PBA). NaF-inhibited LS8 cells displayed time- and dose- dependent viability. Additionally, apoptosis and morphological changes were observed. RNA-sequencing data showed that protein processing in endoplasmic reticulum was obviously affected. ERS and apoptosis were induced by excessive NaF. Downregulation of kallikrein-related peptidase 4 (KLK4) was also observed. Inhibition of ERS by 4-PBA rescued the apoptotic and functional protein changes in cells. Excessive fluoride induces apoptosis by activating ERS, which is mediated by GRP-78/PERK/CHOP signaling. Key proteinase is present in maturation-stage enamel; KLK4 was also affected by fluoride, but rescued by 4-PBA. This study presents a possibility for therapeutic strategies for dental fluorosis, while further exploration is required.
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Affiliation(s)
- Li Jinyi
- Key laboratory of Shaanxi Province for Craniofacial Precision Medicine Research, College of Stomatology, Xi'an Jiaotong University, Xi'an, 710004, People's Republic of China
- Department of Pediatric Dentistry, College of Stomatology, Xi'an Jiaotong University, Xi Wu Road No.98, Xi'an 710004, 710041, People's Republic of China
| | - Yang Keyu
- National Regional Children's Medical Center (Northwest), Xi'an Children's Hospital, Affiliated Children's Hospital of Xi'an Jiaotong University, Xi'an, 710003, People's Republic of China
| | - Dai Shanshan
- Key laboratory of Shaanxi Province for Craniofacial Precision Medicine Research, College of Stomatology, Xi'an Jiaotong University, Xi'an, 710004, People's Republic of China
- Department of Pediatric Dentistry, College of Stomatology, Xi'an Jiaotong University, Xi Wu Road No.98, Xi'an 710004, 710041, People's Republic of China
| | - He Shuyang
- Faculty of dentistry, The university of Hong Kong, Hong Kong, SAR, People's Republic of China
| | - Liu Ruirui
- Key laboratory of Shaanxi Province for Craniofacial Precision Medicine Research, College of Stomatology, Xi'an Jiaotong University, Xi'an, 710004, People's Republic of China
- Department of Prosthodontics, College of Stomatology, Xi'an Jiaotong University, Xi'an, 710004, People's Republic of China
| | - Guo Qingyu
- Key laboratory of Shaanxi Province for Craniofacial Precision Medicine Research, College of Stomatology, Xi'an Jiaotong University, Xi'an, 710004, People's Republic of China.
- Department of Pediatric Dentistry, College of Stomatology, Xi'an Jiaotong University, Xi Wu Road No.98, Xi'an 710004, 710041, People's Republic of China.
| | - Liu Fei
- Key laboratory of Shaanxi Province for Craniofacial Precision Medicine Research, College of Stomatology, Xi'an Jiaotong University, Xi'an, 710004, People's Republic of China.
- Department of Pediatric Dentistry, College of Stomatology, Xi'an Jiaotong University, Xi Wu Road No.98, Xi'an 710004, 710041, People's Republic of China.
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24
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Luo S, Shao R, Hong Y, Zhang T, Zhou Q, Zhou Q, Rao F, Zhao X, Dong Y, Zhu R, Ling P, Cui G, Guan Z, Luo P, He Y, Qi X, Liao J, Hong W. Identifying the oral microbiome of adolescents with and without dental fluorosis based on full-length 16S rRNA gene sequencing. Front Microbiol 2024; 15:1296753. [PMID: 38380100 PMCID: PMC10876846 DOI: 10.3389/fmicb.2024.1296753] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2023] [Accepted: 01/15/2024] [Indexed: 02/22/2024] Open
Abstract
Dental fluorosis, resulting from long-term environmental exposure to fluoride, is prevalent among diverse populations worldwide. Severe fluorosis not only compromises the aesthetic appeal of teeth but also impairs their functionality. This study aims to investigate the oral microbiome in dental fluorosis and the health individuals of adolescents living in the endemic fluorosis area of Guizhou, China through full-length 16S rDNA sequencing. Fourty-six individuals meet the sampling criteria, and we divided these samples into the following groups: a healthy group (H = 23) and a dental fluorosis group (F = 23), and two subgroups of Miao ethnicity: a healthy Miao group (Hm = 13) and a dental fluorosis Miao group (Fm = 15). A total of 660,389 high-quality sequences were obtained, and 12,007 Amplicon Sequence Variants (ASVs) were identified, revealing significant variations in oral microbiome between Fm and Hm groups. The composition of oral microbiota was similar between the H and F groups. At the genus level, Pseudopropionibacterium and at the species level, Streptococcus oralis_subsp.dentisani_clade_058 were less abundant in group F than in group H (P < 0.05). Further analysis revealed that the abundance of Capnocytophaga gingivalis and Kingella denitrificans was significantly lower in Fm fluorosis patients than in the Hm group (P < 0.05). Based on the LEfSe analysis, the potential core biomarkers in the oral of Fm fluorosis patients were identified at different taxonomic levels, ranging from phylum to species. These include Gammaproteobacteria, Prevotella sp_HMT_304, Gemella sanguinis, and Gracilibacteria_(GN02). Network analysis revealed that the microbiota in the fluorosis group exhibited more complex interactions with each other than the healthy group. Notably, within the Hm group, the potential biomarkers Capnocytophaga gingivalis and Kingella denitrificans exhibited a positive correlation. Finally, we employed PICRUSt2 analysis to explore the abundance clustering of the top 30 functional units in each sample, and we found that the metabolic pathway compositions of the four groups were similar. In summary, our findings suggest that the microbial composition of plaque in Hm patients with dental fluorosis is significantly altered, and we identified the potential marker microorganisms that contribute to these changes.
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Affiliation(s)
- Shanshan Luo
- Key Laboratory of Endemic and Ethnic Diseases, Ministry of Education and School/Hospital of Stomatology Guizhou Medical University, Guiyang, Guizhou, China
| | - Ruirui Shao
- Key Laboratory of Endemic and Ethnic Diseases, Ministry of Education and School/Hospital of Stomatology Guizhou Medical University, Guiyang, Guizhou, China
| | - Yue Hong
- He Guantun Town Health Center in Qixingguan District, Bijie, Guizhou, China
| | - Ting Zhang
- Key Laboratory of Endemic and Ethnic Diseases, Ministry of Education and School/Hospital of Stomatology Guizhou Medical University, Guiyang, Guizhou, China
- Collaborative Innovation Center for Preventionand Control of Endemic and Ethnic Regional Diseases Co-constructed by the Province and Ministry, Guiyang, Guizhou, China
| | - Qingshuai Zhou
- Guizhou Provincial People’s Hospital, Guiyang, Guizhou, China
| | - Qian Zhou
- Key Laboratory of Endemic and Ethnic Diseases, Ministry of Education and School/Hospital of Stomatology Guizhou Medical University, Guiyang, Guizhou, China
| | - Fengqing Rao
- Key Laboratory of Endemic and Ethnic Diseases, Ministry of Education and School/Hospital of Stomatology Guizhou Medical University, Guiyang, Guizhou, China
| | - Xingxing Zhao
- Key Laboratory of Endemic and Ethnic Diseases, Ministry of Education and School/Hospital of Stomatology Guizhou Medical University, Guiyang, Guizhou, China
| | - Yangting Dong
- Key Laboratory of Endemic and Ethnic Diseases, Ministry of Education and School/Hospital of Stomatology Guizhou Medical University, Guiyang, Guizhou, China
| | - Ruiyu Zhu
- School of Biological and Chemical Engineering, Zhejiang University of Science and Technology, Hangzhou, China
| | - Ping Ling
- Pediatric Intensive Care Unit, Guiyang Maternal and Child Health Care Hospital, Guiyang, Guizhou, China
| | - Guzhen Cui
- Key Laboratory of Microbiology and Parasitology of Education Department of Guizhou, Guizhou Medical University, Guiyang, Guizhou, China
| | - Zhizhong Guan
- Key Laboratory of Endemic and Ethnic Diseases, Ministry of Education and School/Hospital of Stomatology Guizhou Medical University, Guiyang, Guizhou, China
| | - Peng Luo
- Collaborative Innovation Center for Preventionand Control of Endemic and Ethnic Regional Diseases Co-constructed by the Province and Ministry, Guiyang, Guizhou, China
| | - Yan He
- Key Laboratory of Endemic and Ethnic Diseases, Ministry of Education and School/Hospital of Stomatology Guizhou Medical University, Guiyang, Guizhou, China
| | - Xiaolan Qi
- Key Laboratory of Endemic and Ethnic Diseases, Ministry of Education and School/Hospital of Stomatology Guizhou Medical University, Guiyang, Guizhou, China
- Collaborative Innovation Center for Preventionand Control of Endemic and Ethnic Regional Diseases Co-constructed by the Province and Ministry, Guiyang, Guizhou, China
| | - Jian Liao
- Key Laboratory of Endemic and Ethnic Diseases, Ministry of Education and School/Hospital of Stomatology Guizhou Medical University, Guiyang, Guizhou, China
| | - Wei Hong
- Key Laboratory of Endemic and Ethnic Diseases, Ministry of Education and School/Hospital of Stomatology Guizhou Medical University, Guiyang, Guizhou, China
- Collaborative Innovation Center for Preventionand Control of Endemic and Ethnic Regional Diseases Co-constructed by the Province and Ministry, Guiyang, Guizhou, China
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25
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Dong Y, Sun X, He W, Xiang J, Qi X, Hong W, He Y, Guan Z. Elevated Level of PINK1/Parkin-Mediated Mitophagy Pathway Involved to the Inhibited Activity of Mitochondrial Superoxide Dismutase in Rat Brains and Primary Hippocampal Neurons Exposed to High Level of Fluoride. Biol Trace Elem Res 2024; 202:538-547. [PMID: 37193858 DOI: 10.1007/s12011-023-03681-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/05/2023] [Accepted: 04/22/2023] [Indexed: 05/18/2023]
Abstract
To reveal the molecular mechanism of brain damage induced by chronic fluorosis, expression of PTEN-induced kinase 1 (PINK1)/parkin RBR E3 ubiquitin-protein ligase (Parkin)-mediated mitophagy pathway and activity of mitochondrial superoxide dismutase (SOD) were investigated in rat brains and primary cultured neurons exposed to high level of fluoride. Sprague-Dawley (SD) rats were treated with fluoride (0, 5, 50, and 100 ppm) for 3 and 6 months. The primary neurons were exposed to 0.4 mM (7.6 ppm) fluoride and thereafter treated with 100 nM rapamycin (a stimulator of mitophagy) or 50 μM 3-methyladenine (3-MA, an inhibitor of mitophagy) for 24 h. The expressions of PINK1/Parkin at the protein level and the activity of SOD in mitochondria of rat brains and cultured neurons were determined by Western blotting and biochemical method, respectively. The results showed that the rats exposed to fluoride exhibited different degrees of dental fluorosis. In comparison to controls, the expressions of PINK1 and Parkin were significantly higher in the rat brains and primary neurons exposed to high fluoride. In addition, a declined activity of mitochondrial SOD was determined. Interestingly, rapamycin treatment enhanced but 3-MA inhibited the changes of PINK1/Parkin pathway and SOD activity, and the correlations between the inhibited SOD activity and the elevated PINK1/Parkin proteins were observed. The results suggest that the inhibition of mitochondrial SOD activity induced by fluorosis may stimulate the expressions of mitophagy (PINK1/ Parkin) pathway to maintain the mitochondrial homeostasis.
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Affiliation(s)
- Yangting Dong
- Key Laboratory of Endemic and Ethnic Diseases (Guizhou Medical University) of the Ministry of Education and Provincial Key Laboratory of Medical Molecular Biology, Guiyang, 550004, People's Republic of China
- Department of Pathology at the Affiliated Hospital of Guizhou Medical University, Guiyang, 550004, People's Republic of China
| | - Xiufen Sun
- Key Laboratory of Endemic and Ethnic Diseases (Guizhou Medical University) of the Ministry of Education and Provincial Key Laboratory of Medical Molecular Biology, Guiyang, 550004, People's Republic of China
| | - Wenwen He
- Key Laboratory of Endemic and Ethnic Diseases (Guizhou Medical University) of the Ministry of Education and Provincial Key Laboratory of Medical Molecular Biology, Guiyang, 550004, People's Republic of China
- Department of Pathology at the Affiliated Hospital of Guizhou Medical University, Guiyang, 550004, People's Republic of China
| | - Jie Xiang
- Department of Pathology at the Affiliated Hospital of Guizhou Medical University, Guiyang, 550004, People's Republic of China
| | - Xiaolan Qi
- Key Laboratory of Endemic and Ethnic Diseases (Guizhou Medical University) of the Ministry of Education and Provincial Key Laboratory of Medical Molecular Biology, Guiyang, 550004, People's Republic of China
| | - Wei Hong
- Key Laboratory of Endemic and Ethnic Diseases (Guizhou Medical University) of the Ministry of Education and Provincial Key Laboratory of Medical Molecular Biology, Guiyang, 550004, People's Republic of China
| | - Yan He
- Key Laboratory of Endemic and Ethnic Diseases (Guizhou Medical University) of the Ministry of Education and Provincial Key Laboratory of Medical Molecular Biology, Guiyang, 550004, People's Republic of China
| | - Zhizhong Guan
- Key Laboratory of Endemic and Ethnic Diseases (Guizhou Medical University) of the Ministry of Education and Provincial Key Laboratory of Medical Molecular Biology, Guiyang, 550004, People's Republic of China.
- Department of Pathology at the Affiliated Hospital of Guizhou Medical University, Guiyang, 550004, People's Republic of China.
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26
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Kumar S, Chhabra V, Mehra M, K S, Kumar B H, Shenoy S, Swamy RS, Murti K, Pai KSR, Kumar N. The fluorosis conundrum: bridging the gap between science and public health. Toxicol Mech Methods 2024; 34:214-235. [PMID: 37921264 DOI: 10.1080/15376516.2023.2268722] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2023] [Accepted: 10/04/2023] [Indexed: 11/04/2023]
Abstract
Fluorosis, a chronic condition brought on by excessive fluoride ingestion which, has drawn much scientific attention and public health concern. It is a complex and multifaceted issue that affects millions of people worldwide. Despite decades of scientific research elucidating the causes, mechanisms, and prevention strategies for fluorosis, there remains a significant gap between scientific understanding and public health implementation. While the scientific community has made significant strides in understanding the etiology and prevention of fluorosis, effectively translating this knowledge into public health policies and practices remains challenging. This review explores the gap between scientific research on fluorosis and its practical implementation in public health initiatives. It suggests developing evidence-based guidelines for fluoride exposure and recommends comprehensive educational campaigns targeting the public and healthcare providers. Furthermore, it emphasizes the need for further research to fill the existing knowledge gaps and promote evidence-based decision-making. By fostering collaboration, communication, and evidence-based practices, policymakers, healthcare professionals, and the public can work together to implement preventive measures and mitigate the burden of fluorosis on affected communities. This review highlighted several vital strategies to bridge the gap between science and public health in the context of fluorosis. It emphasizes the importance of translating scientific evidence into actionable guidelines, raising public awareness about fluoride consumption, and promoting preventive measures at individual and community levels.
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Affiliation(s)
- Sachindra Kumar
- Department of Pharmacology, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education (MAHE), Manipal, India
| | - Vishal Chhabra
- Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education and Research, Hajipur, India
| | - Manmeet Mehra
- Department of Pharmacology, Guru Nanak Dev University, Amritsar, India
| | - Saranya K
- Department of Pharmacy Practice, National Institute of Pharmaceutical Education and Research, Hajipur, India
| | - Harish Kumar B
- Department of Pharmacology, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education (MAHE), Manipal, India
| | - Smita Shenoy
- Department of Pharmacology, Kasturba Medical College Manipal, Manipal Academy of Higher Education, Manipal, India
| | - Ravindra Shantakumar Swamy
- Division of Anatomy, Department of Basic Medical Sciences (DBMS), Manipal Academy of Higher Education (MAHE), Manipal, India
| | - Krishna Murti
- Department of Pharmacy Practice, National Institute of Pharmaceutical Education and Research, Hajipur, India
| | - K Sreedhara Ranganath Pai
- Department of Pharmacology, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education (MAHE), Manipal, India
| | - Nitesh Kumar
- Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education and Research, Hajipur, India
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27
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Dubey SD, Nagaraj SK, Rangareddy H. Serum albumin adjusted calcium and fluoride among type 2 diabetes mellitus patients. Bioinformation 2024; 20:65-69. [PMID: 38352911 PMCID: PMC10859953 DOI: 10.6026/973206300200065] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2024] [Revised: 01/31/2024] [Accepted: 01/31/2024] [Indexed: 02/16/2024] Open
Abstract
The regulation of glucose-dependent insulin secretion in pancreatic β-cells relies on calcium concentration, making it a calcium-dependent process. Disruptions in calcium homeostasis may contribute to insulin dysfunction and disturbances in glucose homeostasis, potentially playing a role in the development of type 2 diabetes mellitus (T2DM). In T2DM patients, there may be changes in fluoride metabolism due to impaired renal function. Measurement of serum albumin-adjusted calcium and is crucial since changes in albumin levels can impact the accurate estimation of true calcium.
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Affiliation(s)
- Shruti Divya Dubey
- Sri Devaraj Urs Medical College constituent of Sri Devaraj Urs Academy of Higher Education and Research, Kolar, India
| | - Shashidhar Kurpad Nagaraj
- Department of Biochemistry, Sri Devaraj Urs Medical College constituent of Sri Devaraj Urs Academy of Higher Education and Research, Kolar, India
| | - Harish Rangareddy
- Department of Biochemistry, Haveri Institute of Medical Sciences, Haveri, India
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28
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Wei YL, Lin XC, Liu YY, Lei YQ, Zhuang XD, Zhang HT, Wang XR. Effects of water fluoridation on early embryonic development of zebrafish. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2024; 270:115907. [PMID: 38176185 DOI: 10.1016/j.ecoenv.2023.115907] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/30/2023] [Revised: 12/25/2023] [Accepted: 12/27/2023] [Indexed: 01/06/2024]
Abstract
Fluoride has strong electronegativity and exposes diversely in nature. Water fluoridation is the most pervasive form of occurrence, representing a significant threat to human health. In this study, we investigate the morphometric and physiological alterations triggered by fluoride stimulation during the embryogenesis of zebrafish and reveal its putative effects of stage- and/or dose-dependent. Fluoride exhibits potent biological activity and can be extensively absorbed by the yolk sac, exerting significant effects on the development of multiple organs. This is primarily manifested as restricted nutrient utilization and elevated levels of lipid peroxidation, further leading to the accumulation of superoxide in the yolk sac, liver, and intestines. Moreover, pericardial edema exerts pressure on the brain and eye development, resulting in spinal curvature and reduced body length. Besides, acute fluoride exposure with varying concentrations has led to diverse teratogenic outcomes. A low dose of water fluoridation tends to induce abnormal development of the embryonic yolk sac, while vascular malformation is widely observed in all fluoride-treated groups. The effect of fluoride exposure on blood circulation is universally present, even in zebrafish larvae that do not exhibit obvious deformities. Their swimming behavior is also affected by water fluoridation, resulting in reduced activity and delayed reactions. In conclusion, this study provides valuable insights into the monitoring of environmental quality related to water fluoridation and disease prevention.
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Affiliation(s)
- Ya-Lan Wei
- College of Clinical Medicine for Obstetrics & Gynecology and Pediatrics, Fujian Medical University, Fuzhou, Fujian 350122, China; Medical Research Center, Fujian Maternity and Child Health Hospital, Fuzhou, Fujian 350001, China
| | - Xin-Chen Lin
- College of Clinical Medicine for Obstetrics & Gynecology and Pediatrics, Fujian Medical University, Fuzhou, Fujian 350122, China; Medical Research Center, Fujian Maternity and Child Health Hospital, Fuzhou, Fujian 350001, China
| | - Ying-Ying Liu
- College of Clinical Medicine for Obstetrics & Gynecology and Pediatrics, Fujian Medical University, Fuzhou, Fujian 350122, China
| | - Yu-Qing Lei
- College of Clinical Medicine for Obstetrics & Gynecology and Pediatrics, Fujian Medical University, Fuzhou, Fujian 350122, China; Medical Research Center, Fujian Maternity and Child Health Hospital, Fuzhou, Fujian 350001, China
| | - Xu-Dong Zhuang
- College of Clinical Medicine for Obstetrics & Gynecology and Pediatrics, Fujian Medical University, Fuzhou, Fujian 350122, China; Medical Research Center, Fujian Maternity and Child Health Hospital, Fuzhou, Fujian 350001, China
| | - Hai-Tao Zhang
- College of Clinical Medicine for Obstetrics & Gynecology and Pediatrics, Fujian Medical University, Fuzhou, Fujian 350122, China; Medical Research Center, Fujian Maternity and Child Health Hospital, Fuzhou, Fujian 350001, China
| | - Xin-Rui Wang
- College of Clinical Medicine for Obstetrics & Gynecology and Pediatrics, Fujian Medical University, Fuzhou, Fujian 350122, China; Medical Research Center, Fujian Maternity and Child Health Hospital, Fuzhou, Fujian 350001, China.
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29
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Zhao L, Li Z, Li M, Sun H, Wei W, Gao L, Zhao Q, Liu Y, Ji X, Li C, Wang J, Gao Y, Pei J. Spatial-Temporal Analysis of Drinking Water Type of Endemic Fluorosis - China, 2009-2022. China CDC Wkly 2024; 6:25-29. [PMID: 38250699 PMCID: PMC10797302 DOI: 10.46234/ccdcw2024.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2023] [Accepted: 12/18/2023] [Indexed: 01/23/2024] Open
Abstract
What is already known about this topic? Endemic fluorosis, caused by high fluoride levels in drinking water, has been a significant health issue in rural areas of China for many decades. What is added by this report? There has been a notable decline in the detection rate of dental fluorosis in children aged 8-12 years in drinking water fluorosis areas across the country from 2009 to 2022. While 14 provincial-level administrative divisions are classified as low-probability clusters, Tianjin remains classified as a high-probability cluster. What are the implications for public health practice? The current policy for preventing and controlling endemic fluorosis in China needs adjustment. Rather than focusing solely on regions with high incidence, there should be a shift towards monitoring and early warning of fluoride exposure. Additionally, local containment measures should be intensified.
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Affiliation(s)
- Lijun Zhao
- Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention; Harbin Medical University, Harbin City, Heilongjiang Province, China
- Key Lab of Etiology and Epidemiology, Education Bureau of Heilongjiang Province (23618504), Ministry of Health of PR; Harbin Medical University, Harbin City, Heilongjiang Province, China
| | - Zhe Li
- Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention; Harbin Medical University, Harbin City, Heilongjiang Province, China
- Key Lab of Etiology and Epidemiology, Education Bureau of Heilongjiang Province (23618504), Ministry of Health of PR; Harbin Medical University, Harbin City, Heilongjiang Province, China
| | - Mang Li
- Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention; Harbin Medical University, Harbin City, Heilongjiang Province, China
- Key Lab of Etiology and Epidemiology, Education Bureau of Heilongjiang Province (23618504), Ministry of Health of PR; Harbin Medical University, Harbin City, Heilongjiang Province, China
| | - Hongna Sun
- Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention; Harbin Medical University, Harbin City, Heilongjiang Province, China
- Key Lab of Etiology and Epidemiology, Education Bureau of Heilongjiang Province (23618504), Ministry of Health of PR; Harbin Medical University, Harbin City, Heilongjiang Province, China
| | - Wei Wei
- Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention; Harbin Medical University, Harbin City, Heilongjiang Province, China
- Key Lab of Etiology and Epidemiology, Education Bureau of Heilongjiang Province (23618504), Ministry of Health of PR; Harbin Medical University, Harbin City, Heilongjiang Province, China
| | - Lin Gao
- Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention; Harbin Medical University, Harbin City, Heilongjiang Province, China
- Key Lab of Etiology and Epidemiology, Education Bureau of Heilongjiang Province (23618504), Ministry of Health of PR; Harbin Medical University, Harbin City, Heilongjiang Province, China
| | - Qiaoshi Zhao
- Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention; Harbin Medical University, Harbin City, Heilongjiang Province, China
- Key Lab of Etiology and Epidemiology, Education Bureau of Heilongjiang Province (23618504), Ministry of Health of PR; Harbin Medical University, Harbin City, Heilongjiang Province, China
| | - Yang Liu
- Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention; Harbin Medical University, Harbin City, Heilongjiang Province, China
- Key Lab of Etiology and Epidemiology, Education Bureau of Heilongjiang Province (23618504), Ministry of Health of PR; Harbin Medical University, Harbin City, Heilongjiang Province, China
| | - Xiaohong Ji
- Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention; Harbin Medical University, Harbin City, Heilongjiang Province, China
- Key Lab of Etiology and Epidemiology, Education Bureau of Heilongjiang Province (23618504), Ministry of Health of PR; Harbin Medical University, Harbin City, Heilongjiang Province, China
| | - Cheng Li
- Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention; Harbin Medical University, Harbin City, Heilongjiang Province, China
- Key Lab of Etiology and Epidemiology, Education Bureau of Heilongjiang Province (23618504), Ministry of Health of PR; Harbin Medical University, Harbin City, Heilongjiang Province, China
| | - Jian Wang
- Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention; Harbin Medical University, Harbin City, Heilongjiang Province, China
- Key Lab of Etiology and Epidemiology, Education Bureau of Heilongjiang Province (23618504), Ministry of Health of PR; Harbin Medical University, Harbin City, Heilongjiang Province, China
| | - Yanhui Gao
- Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention; Harbin Medical University, Harbin City, Heilongjiang Province, China
- Key Lab of Etiology and Epidemiology, Education Bureau of Heilongjiang Province (23618504), Ministry of Health of PR; Harbin Medical University, Harbin City, Heilongjiang Province, China
| | - Junrui Pei
- Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention; Harbin Medical University, Harbin City, Heilongjiang Province, China
- Key Lab of Etiology and Epidemiology, Education Bureau of Heilongjiang Province (23618504), Ministry of Health of PR; Harbin Medical University, Harbin City, Heilongjiang Province, China
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Garcia ALH, de Souza MR, Picinini J, Soares S, Rohr P, Linden R, Schneider A, Freitas MPM, Ely HC, Bobermin LD, Dos Santos AQ, Dalberto D, da Silva J. Unraveling gene expression and genetic instability in dental fluorosis: Investigating the impact of chronic fluoride exposure. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 906:167393. [PMID: 37769727 DOI: 10.1016/j.scitotenv.2023.167393] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/14/2022] [Revised: 08/31/2023] [Accepted: 09/24/2023] [Indexed: 10/03/2023]
Abstract
Chronic fluoride exposure, even in small quantities, when continuously ingested by the human population, can lead to a significant public health concern known as fluorosis. Our understanding of the effects of fluoride on human health, as well as its potential to impact DNA, is limited. The present study aimed to assess genetic instability in 20 individuals diagnosed with dental fluorosis and 20 individuals without the condition from the state of Rio Grande do Sul, Brazil. The participants' dental fluorosis was evaluated using the Thylstrup-Fejerskov index (TF). To further evaluate genetic instability, several assays were conducted, including the alkaline and modified (+FPG) comet assay (using a visual score, VS), the buccal micronucleus (MN) cytome (BMCyt) assay, the cytokinesis-block MN (CBMN-Cyt) assay, and the measurement of telomere length (TL). In addition, the study utilized tools from Systems Biology to gain insights into the effects of fluoride exposure on humans, which aided in the selection and evaluation of mRNA expression levels of specific genes, namely PPA1 (inorganic pyrophosphatase 1), AQP5 (Aquaporin 5), and MT-ATP6 (Mitochondrially Encoded Adenosine Triphosphate Synthase Membrane Subunit 6). Furthermore, fluoride levels in the blood and urine were assessed using an ion-selective electrode, along with the evaluation of the inflammatory response in serum. The group with dental fluorosis exhibited 2.18 times higher MN frequencies specifically when assessed using the CBMN-Cyt assay, in comparison with individuals without fluorosis. Findings from the enzyme-modified comet assay indicated oxidative damage to purines in DNA. Furthermore, a decrease in TL was observed, along with elevated expression patterns of the PPA1 and AQP5 genes, and significant alterations in cytokine release. Significant correlations were identified between the TF and age, as well as the levels of necrotic cells. Additionally, noteworthy correlations were established between fluoride levels and the levels of MN, VS, and MT-ATP6. Although dental fluorosis results from fluoride exposure, our research highlights the potential influence of this condition on genomic instability and gene expression. Consequently, our findings stress the importance of continuously monitoring populations with a high incidence of dental fluorosis to enhance our comprehension of how genomic instability might correlate with the origins and consequences of health problems in these individuals.
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Affiliation(s)
- Ana Leticia Hilario Garcia
- Laboratory of Genetic Toxicology, PPGBioSaúde (Postgraduate Program in Cellular and Molecular Biology Applied to Health), Lutheran University of Brazil (ULBRA), 92425-900 Canoas, Rio Grande do Sul, Brazil; Laboratory of Genetic Toxicology, La Salle University (UniLaSalle), Canoas, Rio Grande do Sul, Brazil.
| | - Melissa Rosa de Souza
- Laboratory of Genetic Toxicology, PPGBioSaúde (Postgraduate Program in Cellular and Molecular Biology Applied to Health), Lutheran University of Brazil (ULBRA), 92425-900 Canoas, Rio Grande do Sul, Brazil
| | - Juliana Picinini
- Laboratory of Genetic Toxicology, PPGBioSaúde (Postgraduate Program in Cellular and Molecular Biology Applied to Health), Lutheran University of Brazil (ULBRA), 92425-900 Canoas, Rio Grande do Sul, Brazil
| | - Solange Soares
- Laboratory of Genetic Toxicology, PPGBioSaúde (Postgraduate Program in Cellular and Molecular Biology Applied to Health), Lutheran University of Brazil (ULBRA), 92425-900 Canoas, Rio Grande do Sul, Brazil
| | - Paula Rohr
- Molecular Oncology Research Center, Barretos Cancer Hospital, Barretos, São Paulo, Brazil
| | - Rafael Linden
- Laboratory of Analytical Toxicology, Institute of Health Sciences, Graduate Program on Toxicology and Analytical Toxicology, Feevale University, Novo Hamburgo, RS, Brazil
| | - Anelise Schneider
- Laboratory of Analytical Toxicology, Institute of Health Sciences, Graduate Program on Toxicology and Analytical Toxicology, Feevale University, Novo Hamburgo, RS, Brazil
| | - Maria Perpétua Mota Freitas
- Lutheran University of Brazil (ULBRA), Graduate Program in Dentistry, 92425-900 Canoas, Rio Grande do Sul, Brazil
| | | | - Larissa Daniele Bobermin
- Departamento de Bioquímica, Programa de Pós-Graduação em Ciências Biológicas: Bioquímica, Instituto de Ciências Básicas da Saúde, Universidade Federal do Rio Grande do Sul (UFRGS), Rua Ramiro Barcelos, 2600, Anexo, Bairro Santa Cecília, Porto Alegre, RS 90035-003, Brazil
| | - André Quincozes Dos Santos
- Departamento de Bioquímica, Programa de Pós-Graduação em Ciências Biológicas: Bioquímica, Instituto de Ciências Básicas da Saúde, Universidade Federal do Rio Grande do Sul (UFRGS), Rua Ramiro Barcelos, 2600, Anexo, Bairro Santa Cecília, Porto Alegre, RS 90035-003, Brazil
| | - Daiana Dalberto
- Laboratory of Genetic Toxicology, PPGBioSaúde (Postgraduate Program in Cellular and Molecular Biology Applied to Health), Lutheran University of Brazil (ULBRA), 92425-900 Canoas, Rio Grande do Sul, Brazil
| | - Juliana da Silva
- Laboratory of Genetic Toxicology, PPGBioSaúde (Postgraduate Program in Cellular and Molecular Biology Applied to Health), Lutheran University of Brazil (ULBRA), 92425-900 Canoas, Rio Grande do Sul, Brazil; Laboratory of Genetic Toxicology, La Salle University (UniLaSalle), Canoas, Rio Grande do Sul, Brazil.
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Liu K, Chai L, Zhao T, Zhang S, Wang J, Yu Y, Niu R, Sun Z. Effects of Treadmill Exercise on Liver Apoptosis in Fluoride-Exposed Mice. Biol Trace Elem Res 2023; 201:5734-5746. [PMID: 36884125 DOI: 10.1007/s12011-023-03619-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/20/2022] [Accepted: 02/28/2023] [Indexed: 03/09/2023]
Abstract
Hepatotoxicity induced by excessive fluoride (F) exposure has been extensively studied in both humans and animals. Chronic fluorosis can result in liver apoptosis. Meanwhile, moderate exercise alleviates apoptosis caused by pathological factors. However, the effect of moderate exercise on F-induced liver apoptosis remains unclear. In this research, sixty-four three-week-old Institute of Cancer Research (ICR) mice, half male and half female, were randomly divided into four groups: control group (distilled water); exercise group (distilled water and treadmill exercise); F group [100 mg/L sodium fluoride (NaF)]; and exercise plus F group (100 mg/L NaF and treadmill exercise). The liver tissues of mice were taken at 3 months and 6 months, respectively. Hematoxylin-eosin (HE) staining and situ terminal deoxynucleotidyl transferase-mediated dUTP nick end labeling (TUNEL) results showed that nuclear condensation and apoptotic hepatocytes occurred in the F group. However, this phenomenon could be reversed with the intervention of treadmill exercise. The results of QRT-PCR and western blot displayed NaF- induced apoptosis via tumor necrosis factor recpter 1 (TNFR1) signaling pathway, while treadmill exercise could restore the molecular changes caused by excessive NaF exposure.
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Affiliation(s)
- Ke Liu
- Shanxi Key Laboratory of Ecological Animal Science and Environmental Veterinary Medicine, College of Animal Science and Veterinary Medicine, Shanxi Agricultural University, Taigu, Jinzhong, 030801, Shanxi, China
| | - Lei Chai
- Shanxi Key Laboratory of Ecological Animal Science and Environmental Veterinary Medicine, College of Animal Science and Veterinary Medicine, Shanxi Agricultural University, Taigu, Jinzhong, 030801, Shanxi, China
| | - Taotao Zhao
- Shanxi Key Laboratory of Ecological Animal Science and Environmental Veterinary Medicine, College of Animal Science and Veterinary Medicine, Shanxi Agricultural University, Taigu, Jinzhong, 030801, Shanxi, China
| | - Shaosan Zhang
- Shanxi Key Laboratory of Ecological Animal Science and Environmental Veterinary Medicine, College of Animal Science and Veterinary Medicine, Shanxi Agricultural University, Taigu, Jinzhong, 030801, Shanxi, China
| | - Jixiang Wang
- Shanxi Key Laboratory of Ecological Animal Science and Environmental Veterinary Medicine, College of Animal Science and Veterinary Medicine, Shanxi Agricultural University, Taigu, Jinzhong, 030801, Shanxi, China
| | - Yanghuan Yu
- Shanxi Key Laboratory of Ecological Animal Science and Environmental Veterinary Medicine, College of Animal Science and Veterinary Medicine, Shanxi Agricultural University, Taigu, Jinzhong, 030801, Shanxi, China
| | - Ruiyan Niu
- Shanxi Key Laboratory of Ecological Animal Science and Environmental Veterinary Medicine, College of Animal Science and Veterinary Medicine, Shanxi Agricultural University, Taigu, Jinzhong, 030801, Shanxi, China
| | - Zilong Sun
- Shanxi Key Laboratory of Ecological Animal Science and Environmental Veterinary Medicine, College of Animal Science and Veterinary Medicine, Shanxi Agricultural University, Taigu, Jinzhong, 030801, Shanxi, China.
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Wang F, Li Y, Tang D, Zhao J, Yang B, Zhang C, Su M, He Z, Zhu X, Ming D, Liu Y. Epidemiological analysis of drinking water-type fluorosis areas and the impact of fluorosis on children's health in the past 40 years in China. ENVIRONMENTAL GEOCHEMISTRY AND HEALTH 2023; 45:9925-9940. [PMID: 37906380 PMCID: PMC10673999 DOI: 10.1007/s10653-023-01772-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/31/2022] [Accepted: 09/28/2023] [Indexed: 11/02/2023]
Abstract
This study analyzed the effect of China's fluorosis prevention and control program, which has been in effect for more than 40 years, and the impact of fluorosis on children's health. Relevant research studies were retrieved from the following online databases from the time of their inception to May 2022: PubMed, ScienceDirect, Embase, Cochrane, China National Knowledge Infrastructure, and Wanfang. The Review Manager 5.3 software was used in statistical analyses. This article included seventy studies: Thirty-eight studies reported the effect of improving water quality and reducing fluoride content, the incidence rate of dental fluorosis in children, and the level of urinary fluoride, and thirty-two studies reported the intelligence quotient (IQ) and health status of children. Following water improvement strategies, the fluoride levels in drinking water decreased significantly; urinary fluoride levels and dental fluorosis decreased significantly in children. With regard to the effect of fluorosis on the IQ of children, the results showed that the IQ of children in areas with a high fluoride of fluorosis was lesser than that in areas with a low fluoride, and this difference was significant. Based on the prevalence of dental fluorosis and its effect on the intelligence of children, it appears that reducing fluoride levels in drinking water and monitoring water quality are important strategies for the prevention and treatment of fluorosis.
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Affiliation(s)
- Feiqing Wang
- Academy of Medical Engineering and Translational Medicine, Tianjin University, No. 92 Weijin Road, Nankai District, Tianjin City, 300072, China
- Clinical Research Center, The First Affiliated Hospital of Guizhou University of Traditional Chinese Medicine, No. 71 Bao Shan North Road, Yunyan District, Guiyang, 550001, Guizhou Province, China
| | - Yanju Li
- Clinical Research Institute, Affiliated Hospital of Guizhou Medical University, Guiyang, 550004, Guizhou Province, China
| | - Dongxin Tang
- Clinical Research Center, The First Affiliated Hospital of Guizhou University of Traditional Chinese Medicine, No. 71 Bao Shan North Road, Yunyan District, Guiyang, 550001, Guizhou Province, China
| | - Jianing Zhao
- Clinical Research Center, The First Affiliated Hospital of Guizhou University of Traditional Chinese Medicine, No. 71 Bao Shan North Road, Yunyan District, Guiyang, 550001, Guizhou Province, China
| | - Bo Yang
- Clinical Research Center, The First Affiliated Hospital of Guizhou University of Traditional Chinese Medicine, No. 71 Bao Shan North Road, Yunyan District, Guiyang, 550001, Guizhou Province, China
| | - Chike Zhang
- Clinical Research Institute, Affiliated Hospital of Guizhou Medical University, Guiyang, 550004, Guizhou Province, China
| | - Min Su
- National and Guizhou Joint Engineering Laboratory for Cell Engineering and Biomedicine Technique, Guiyang, 550004, Guizhou Province, China
| | - Zhixu He
- National and Guizhou Joint Engineering Laboratory for Cell Engineering and Biomedicine Technique, Guiyang, 550004, Guizhou Province, China
| | - Xiaodong Zhu
- Academy of Medical Engineering and Translational Medicine, Tianjin University, No. 92 Weijin Road, Nankai District, Tianjin City, 300072, China.
- Neurological Institute, Tianjin Medical University General Hospital, Tianjin, 300072, China.
| | - Dong Ming
- Academy of Medical Engineering and Translational Medicine, Tianjin University, No. 92 Weijin Road, Nankai District, Tianjin City, 300072, China
| | - Yang Liu
- Clinical Research Center, The First Affiliated Hospital of Guizhou University of Traditional Chinese Medicine, No. 71 Bao Shan North Road, Yunyan District, Guiyang, 550001, Guizhou Province, China.
- National and Guizhou Joint Engineering Laboratory for Cell Engineering and Biomedicine Technique, Guiyang, 550004, Guizhou Province, China.
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Wang Y, Xu J, Chen H, Shu Y, Peng W, Lai C, Kong R, Lan R, Huang L, Xin J, Sun N, Ni X, Bai Y, Wu B. Effects of prolonged fluoride exposure on innate immunity, intestinal mechanical, and immune barriers in mice. Res Vet Sci 2023; 164:105019. [PMID: 37729784 DOI: 10.1016/j.rvsc.2023.105019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2023] [Revised: 08/23/2023] [Accepted: 09/11/2023] [Indexed: 09/22/2023]
Abstract
The aim of this study is to explore the effects of fluoride on the innate immunity, intestinal mechanical barrier, and immune barrier of C57BL/6 mice, as well as to analyze the degree of structural and tissue damage, providing reference data for related research. Mice were randomly divided into four groups and then treated with 0 mg/L (control), 50 mg/L, 100 mg/L, 125 mg/L sodium fluoride solution, respectively, for 120 days. Histological technique, ELISA, MTT colorimetry methods were used to detect and analyze the effects of different concentrations of fluoride on the intestinal morphology, mechanical barrier and the immune functions and innate immunity of mice. The results showed that compared with the control group, the villi were injured in different degrees of the three fluoride groups, the number of goblet cells, the protein expression levels of connexin ZO-1, Claudin-1 and Occludin, the content of Diamine Oxidase (DAO), endotoxin (ET) and D-lactic acid (D-LA), the activity of natural killer cell (NK cells), the number and percentage of neutrophils and erythrocytes, the phagocytic rate of neutrophils, and the rate of C3bR rosette (which is formed by the adhesion of C3b receptors on the red blood cell membrane to complement sensitized yeast) and IC rosette (which is formed by the adhesion of C3b molecules in the immunecomplex adhered to the red blood cell membrane to non sensitized yeast) of red blood cells, the content of interlenkin 1 beta (IL-1β) and interlenkin 8 (IL-8), the number and percentage of lymphocytes decreased with the increasing of fluoride concentration. In addition, the content of the Immunoglobulin A (sIgA) showed a trend of increase at first and then decrease in salivary gland and jejunum. It is concluded that excessive intake of fluoride for a long time has a certain damage effect on the intestinal tract, leading to an increase in the permeability of the intestinal tract, thereby destroying the mechanical and immune barrier function of the intestinal tract.
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Affiliation(s)
- Yan Wang
- Institute of Basic Medicine and Forensic Medicine, North Sichuan Medical College, Nanchong 637000, Sichuan, China
| | - Jing Xu
- Key Laboratory of Sichuan Province for Fishes Conservation and Utilization in the Upper Reaches of the Yangtze River, Neijiang Normal University, Neijiang 641112, China
| | - Hang Chen
- College of Life Science, China West Normal University, Nanchong 637000, Sichuan, PR China
| | - Yuanbin Shu
- College of Life Science, China West Normal University, Nanchong 637000, Sichuan, PR China
| | - Weiqi Peng
- Department of Gastroenterology, Baiyun Branch, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Chunxiao Lai
- Department of Gastroenterology, Baiyun Branch, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Ruiyang Kong
- College of Life Science, China West Normal University, Nanchong 637000, Sichuan, PR China
| | - Ruiyang Lan
- College of Life Science, China West Normal University, Nanchong 637000, Sichuan, PR China
| | - Lijing Huang
- College of Life Science, China West Normal University, Nanchong 637000, Sichuan, PR China
| | - Jinge Xin
- Animal Microecology Institute, College of Veterinary, Sichuan Agricultural University, Chengdu, China
| | - Ning Sun
- Animal Microecology Institute, College of Veterinary, Sichuan Agricultural University, Chengdu, China
| | - Xueqin Ni
- Animal Microecology Institute, College of Veterinary, Sichuan Agricultural University, Chengdu, China
| | - Yang Bai
- Department of Gastroenterology, Baiyun Branch, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Bangyuan Wu
- College of Life Science, China West Normal University, Nanchong 637000, Sichuan, PR China.
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Jin Y, Zhou BH, Zhao J, Ommati MM, Wang S, Wang HW. Fluoride-induced osteoporosis via interfering with the RANKL/RANK/OPG pathway in ovariectomized rats: Oophorectomy shifted skeletal fluorosis from osteosclerosis to osteoporosis. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2023; 336:122407. [PMID: 37597730 DOI: 10.1016/j.envpol.2023.122407] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/29/2023] [Revised: 08/09/2023] [Accepted: 08/16/2023] [Indexed: 08/21/2023]
Abstract
Osteosclerosis and osteoporosis are the two main clinical manifestations of skeletal fluorosis. However, the reasons for the different clinical manifestations are unclear. In this study, we established the fluoride (F) -exposed ovariectomized (OVX) and non-OVX rat models to assess the potential role of ovarian function loss in osteosclerosis and osteoporosis. Micro-CT scanning showed that excessive F significantly induced a high bone mass in non-OVX rats. In contrast, a low bone mass manifestation was presented in OVX F-exposed rats. Also, a prominent feature of increasing trabecular connectivity, collagen area, growth plate thickness, and reduced trabecular space was found by histopathological morphology in non-OVX F-exposed rats; an opposite result was observed in OVX F-exposed. These alterations indicated ovariectomy was a vital factor leading to osteosclerosis or osteoporosis in skeletal fluorosis. Furthermore, levels of bone alkaline phosphatase (BALP) and tartrate-resistant acid phosphatase (TRAP) increased, combined with the increasing osteoclasts number, showing a sign of high bone turnover in both OVX and non-OVX F-exposed rats. Mechanistically, oophorectomy considerably activated the RANKL/RANK/OPG signaling pathway. Meanwhile, it was discovered that upregulated NF-κB positively facilitated the accumulation of nuclear factor of activated T-cells 1 (NFATC1), significantly promoting osteoclast differentiation. To sum up, this study greatly enriched the causes of clinical skeletal fluorosis and provided a new perspective for studying the pathogenesis of skeletal fluorosis.
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Affiliation(s)
- Ye Jin
- Henan Key Laboratory of Environmental and Animal Product Safety, Henan University of Science and Technology, 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, Luoyang, 471000, Henan, People's Republic of China.
| | - Jing Zhao
- Henan Key Laboratory of Environmental and Animal Product Safety, Henan University of Science and Technology, Luoyang, 471000, Henan, People's Republic of China.
| | - Mohammad Mehdi Ommati
- Henan Key Laboratory of Environmental and Animal Product Safety, Henan University of Science and Technology, Luoyang, 471000, Henan, People's Republic of China.
| | - Shuai Wang
- Henan Key Laboratory of Environmental and Animal Product Safety, Henan University of Science and Technology, Luoyang, 471000, Henan, People's Republic of China.
| | - Hong-Wei Wang
- Henan Key Laboratory of Environmental and Animal Product Safety, Henan University of Science and Technology, Luoyang, 471000, Henan, People's Republic of China.
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Wang F, Li Y, Tang D, Yang B, Tian T, Tian M, Meng N, Xie W, Zhang C, He Z, Zhu X, Ming D, Liu Y. Exploration of the SIRT1-mediated BDNF-TrkB signaling pathway in the mechanism of brain damage and learning and memory effects of fluorosis. Front Public Health 2023; 11:1247294. [PMID: 37711250 PMCID: PMC10499441 DOI: 10.3389/fpubh.2023.1247294] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2023] [Accepted: 08/16/2023] [Indexed: 09/16/2023] Open
Abstract
Introduction Fluoride is considered an environmental pollutant that seriously affects organisms and ecosystems, and its harmfulness is a perpetual public health concern. The toxic effects of fluoride include organelle damage, oxidative stress, cell cycle destruction, inflammatory factor secretion, apoptosis induction, and synaptic nerve transmission destruction. To reveal the mechanism of fluorosis-induced brain damage, we analyzed the molecular mechanism and learning and memory function of the SIRT1-mediated BDNF-TrkB signaling pathway cascade reaction in fluorosis-induced brain damage through in vivo experiments. Methods This study constructed rat models of drinking water fluorosis using 50 mg/L, 100 mg/L, and 150 mg/L fluoride, and observed the occurrence of dental fluorosis in the rats. Subsequently, we measured the fluoride content in rat blood, urine, and bones, and measured the rat learning and memory abilities. Furthermore, oxidative stress products, inflammatory factor levels, and acetylcholinesterase (AchE) and choline acetyltransferase (ChAT) activity were detected. The pathological structural changes to the rat bones and brain tissue were observed. The SIRT1, BDNF, TrkB, and apoptotic protein levels were determined using western blotting. Results All rats in the fluoride exposure groups exhibited dental fluorosis; decreased learning and memory abilities; and higher urinary fluoride, bone fluoride, blood fluoride, oxidative stress product, and inflammatory factor levels compared to the control group. The fluoride-exposed rat brain tissue had abnormal AchE and ChAT activity, sparsely arranged hippocampal neurons, blurred cell boundaries, significantly fewer astrocytes, and swollen cells. Furthermore, the nucleoli were absent from the fluoride-exposed rat brain tissue, which also contained folded neuron membranes, deformed mitochondria, absent cristae, vacuole formation, and pyknotic and hyperchromatic chromatin. The fluoride exposure groups had lower SIRT1, BDNF, and TrkB protein levels and higher apoptotic protein levels than the control group, which were closely related to the fluoride dose. The findings demonstrated that excessive fluoride caused brain damage and affected learning and memory abilities. Discussion Currently, there is no effective treatment method for the tissue damage caused by fluorosis. Therefore, the effective method for preventing and treating fluorosis damage is to control fluoride intake.
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Affiliation(s)
- Feiqing Wang
- Academy of Medical Engineering and Translational Medicine, Tianjin University, Tianjin, China
- Medical Research Center, The First Affiliated Hospital of Guizhou University of Traditional Chinese Medicine, Guiyang, Guizhou Province, China
| | - Yanju Li
- Department of Hematology, Affiliated Hospital of Guizhou Medical University, Guiyang, Guizhou Province, China
| | - Dongxin Tang
- Academy of Medical Engineering and Translational Medicine, Tianjin University, Tianjin, China
| | - Bo Yang
- Medical Research Center, The First Affiliated Hospital of Guizhou University of Traditional Chinese Medicine, Guiyang, Guizhou Province, China
| | - Tingting Tian
- Medical Research Center, The First Affiliated Hospital of Guizhou University of Traditional Chinese Medicine, Guiyang, Guizhou Province, China
| | - Mengxian Tian
- Medical Research Center, The First Affiliated Hospital of Guizhou University of Traditional Chinese Medicine, Guiyang, Guizhou Province, China
| | - Na Meng
- Medical Research Center, The First Affiliated Hospital of Guizhou University of Traditional Chinese Medicine, Guiyang, Guizhou Province, China
| | - Wei Xie
- Medical Research Center, The First Affiliated Hospital of Guizhou University of Traditional Chinese Medicine, Guiyang, Guizhou Province, China
| | - Chike Zhang
- Department of Hematology, Affiliated Hospital of Guizhou Medical University, Guiyang, Guizhou Province, China
| | - Zhixu He
- National & Guizhou Joint Engineering Laboratory for Cell Engineering and Biomedicine Technique, Guiyang, Guizhou Province, China
| | - Xiaodong Zhu
- Academy of Medical Engineering and Translational Medicine, Tianjin University, Tianjin, China
- Neurological Institute, Tianjin Medical University General Hospital, Tianjin, China
| | - Dong Ming
- Academy of Medical Engineering and Translational Medicine, Tianjin University, Tianjin, China
| | - Yang Liu
- Academy of Medical Engineering and Translational Medicine, Tianjin University, Tianjin, China
- National & Guizhou Joint Engineering Laboratory for Cell Engineering and Biomedicine Technique, Guiyang, Guizhou Province, China
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González-González R, Bologna-Molina R, Molina-Frechero N. Editorial: Fluoride exposure, dental fluorosis, and health. FRONTIERS IN ORAL HEALTH 2023; 4:1256495. [PMID: 37601298 PMCID: PMC10435973 DOI: 10.3389/froh.2023.1256495] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2023] [Accepted: 07/27/2023] [Indexed: 08/22/2023] Open
Affiliation(s)
| | - Ronell Bologna-Molina
- Research Department, School of Dentistry, Juarez University of the Durango State, Durango, Mexico
- Molecular Pathology Area, Diagnostics in Pathology and Oral Medicine School of Dentistry, University of the Republic, Montevideo, Uruguay
| | - Nelly Molina-Frechero
- Division of Biological and Health Sciences, Autonomous Metropolitan University Xochimilco, Mexico City, Mexico
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Mou Y, Qu T, Wang R, Zhang Y, He Z, Gu S. The association of high-fluoride and high-iodine combined exposure with dental fluorosis and goiter: a meta-analysis. ENVIRONMENTAL GEOCHEMISTRY AND HEALTH 2023; 45:3143-3153. [PMID: 36155875 DOI: 10.1007/s10653-022-01396-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/15/2021] [Accepted: 04/08/2022] [Indexed: 06/01/2023]
Abstract
It is controversial that high-fluoride and high-iodine combined exposure affects the prevalence of dental fluorosis and goiter. The aim of this study was to explore the potential association between high-fluoride and high-iodine combined exposure with dental fluorosis and goiter. We retrieved relevant articles from PubMed, Cochrane Library, China National Knowledge Infrastructure, Wanfang Database and China Science and Technology Journal Database (VIP). The query format was 1 # "Fluorosis" OR "Fluoride," 2 # "Iodine" OR "Iodide," and 3 # 1 AND 2. A total of 20 papers were included in this study after independent review by two investigators. Our analysis showed that high-fluoride and high-iodine biphasic exposure was significantly associated with the prevalence of goiter (OR = 4.69, 95% CI 2.82-7.80, P < 0.001). The prevalence of dental fluorosis was also significantly raised (OR = 11.71, 95% CI 7.57-18.14, P < 0.001). Sensitivity analysis suggested that combined statistics of multiple studies were reliable. For goiter, subgroup analysis revealed study province, sample size and published year as sources of heterogeneity (P < 0.001). For dental fluorosis, only sample size was the impact factor of heterogeneity. As well, funnel plot, Begg's test and Egger's test suggested there was no publication bias (P > 0.05). Overall, our study demonstrates that high-fluoride and high-iodine combined exposure is a risk factor for occurrence of dental fluorosis and goiter. The chronic of high-fluoride and high-iodine combined exposure is a significant higher risk of disease than normal.
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Affiliation(s)
- Yahao Mou
- Department of Environmental and Occupational Health, Faculty of Public Health, Dali University, Dali, Yunnan, China
| | - Tengjiao Qu
- Department of Environmental and Occupational Health, Faculty of Public Health, Dali University, Dali, Yunnan, China
| | - Ruiyu Wang
- Department of Environmental and Occupational Health, Faculty of Public Health, Dali University, Dali, Yunnan, China
| | - Yulu Zhang
- Department of Environmental and Occupational Health, Faculty of Public Health, Dali University, Dali, Yunnan, China
| | - Zuoshun He
- Department of Environmental and Occupational Health, Faculty of Public Health, Dali University, Dali, Yunnan, China
| | - Shiyan Gu
- Department of Environmental and Occupational Health, Faculty of Public Health, Dali University, Dali, Yunnan, China.
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Ma Y, Meng X, Sowanou A, Wang J, Li H, Li A, Zhong N, Yao Y, Pei J. Effect of Fluoride on the Expression of 8-Hydroxy-2'-Deoxyguanosine in the Blood, Kidney, Liver, and Brain of Rats. Biol Trace Elem Res 2023; 201:2904-2916. [PMID: 35984601 DOI: 10.1007/s12011-022-03394-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/24/2022] [Accepted: 08/14/2022] [Indexed: 11/02/2022]
Abstract
Excessive exposure of fluoride not only leads to damage on bone, but also has an adverse effect on soft tissues. Oxidative DNA damage induced by fluoride is thought to be one of the toxic mechanisms of fluoride effect. However, the dose-response of fluoride on oxidative DNA damage is barely studied in organisms. This study investigated the concentration of fluoride in rat blood, kidney, liver, and brain as well as the dose-time effect of fluoride on the expression of 8-hydroxy-2'-deoxyguanosine (8-OHdG) in the above tissues. Rats were exposed to 0 mg/L, 25 mg/L, 50 mg/L, and 100 mg/L of fluorine ion and treated for one and three months. The results showed that the accumulation of fluoride in soft tissues was very different. At the first month, blood fluoride was increased, liver and brain fluoride showed a U-shaped change, and kidney fluoride was not significant. At the third month, blood fluoride was altered with an inverted U-shaped change, kidney and brain fluoride increased, but liver fluoride decreased. Both the exposure concentration and the time of exposure had a significant effect on the expression of 8-OHdG in the above tissues. However, the effect patterns of fluoride on these tissues were notably different at different times. At the first month of fluoride treatment, blood, kidney, and liver 8-OHdG decreased with the increasing fluoride concentration. At the third month, blood 8-OHdG showed a U-shaped change, but kidney 8-OHdG altered with an inverted U-shaped change. Liver 8-OHdG increased, while brain 8-OHdG decreased at the third month. Correlation analysis showed that only blood 8-OHdG was significantly inversely correlated with blood fluoride and dental fluorosis grade in both the first and third months. Liver 8-OHdG was negatively and significantly correlated with liver fluoride. There was a weak but nonsignificant correlation between kidney and brain 8-OHdG and fluoride in both tissues. Additionally, blood 8-OHdG was positively correlated with kidney and liver 8-OHdG at the first month and positively correlated with brain 8-OHdG at the third month. Taken together, our data suggests that concentration and time of fluoride exposure had a significant effect on 8-OHdG, but the effect patterns of fluoride on 8-OHdG were different in the tissues, which suggests that the impact of fluoride on 8-OHdG may be a tissue-specific, as well as a non-monotonic positive correlation.
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Affiliation(s)
- Yongzheng Ma
- Key Laboratory of Etiology and Epidemiology, National Health Commission & Education Bureau of Heilongjiang Province (23618504), Education Bureau of Heilongjiang Province, Harbin Medical University, Harbin, 150081, Heilongjiang Province, China
- Heilongjiang Provincial Key Laboratory of Trace Elements and Human Health, Harbin Medical University, Harbin, 150081, Heilongjiang Province, China
- Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin, 150081, Heilongjiang Province, China
| | - Xinyue Meng
- Key Laboratory of Etiology and Epidemiology, National Health Commission & Education Bureau of Heilongjiang Province (23618504), Education Bureau of Heilongjiang Province, Harbin Medical University, Harbin, 150081, Heilongjiang Province, China
- Heilongjiang Provincial Key Laboratory of Trace Elements and Human Health, Harbin Medical University, Harbin, 150081, Heilongjiang Province, China
- Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin, 150081, Heilongjiang Province, China
| | - Alphonse Sowanou
- Key Laboratory of Etiology and Epidemiology, National Health Commission & Education Bureau of Heilongjiang Province (23618504), Education Bureau of Heilongjiang Province, Harbin Medical University, Harbin, 150081, Heilongjiang Province, China
- Heilongjiang Provincial Key Laboratory of Trace Elements and Human Health, Harbin Medical University, Harbin, 150081, Heilongjiang Province, China
- Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin, 150081, Heilongjiang Province, China
| | - Jian Wang
- Key Laboratory of Etiology and Epidemiology, National Health Commission & Education Bureau of Heilongjiang Province (23618504), Education Bureau of Heilongjiang Province, Harbin Medical University, Harbin, 150081, Heilongjiang Province, China
- Heilongjiang Provincial Key Laboratory of Trace Elements and Human Health, Harbin Medical University, Harbin, 150081, Heilongjiang Province, China
- Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin, 150081, Heilongjiang Province, China
| | - Hanying Li
- Key Laboratory of Etiology and Epidemiology, National Health Commission & Education Bureau of Heilongjiang Province (23618504), Education Bureau of Heilongjiang Province, Harbin Medical University, Harbin, 150081, Heilongjiang Province, China
- Heilongjiang Provincial Key Laboratory of Trace Elements and Human Health, Harbin Medical University, Harbin, 150081, Heilongjiang Province, China
- Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin, 150081, Heilongjiang Province, China
| | - Ailin Li
- Key Laboratory of Etiology and Epidemiology, National Health Commission & Education Bureau of Heilongjiang Province (23618504), Education Bureau of Heilongjiang Province, Harbin Medical University, Harbin, 150081, Heilongjiang Province, China
- Heilongjiang Provincial Key Laboratory of Trace Elements and Human Health, Harbin Medical University, Harbin, 150081, Heilongjiang Province, China
- Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin, 150081, Heilongjiang Province, China
| | - Nan Zhong
- Key Laboratory of Etiology and Epidemiology, National Health Commission & Education Bureau of Heilongjiang Province (23618504), Education Bureau of Heilongjiang Province, Harbin Medical University, Harbin, 150081, Heilongjiang Province, China
- Heilongjiang Provincial Key Laboratory of Trace Elements and Human Health, Harbin Medical University, Harbin, 150081, Heilongjiang Province, China
- Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin, 150081, Heilongjiang Province, China
| | - Yingjie Yao
- Key Laboratory of Etiology and Epidemiology, National Health Commission & Education Bureau of Heilongjiang Province (23618504), Education Bureau of Heilongjiang Province, Harbin Medical University, Harbin, 150081, Heilongjiang Province, China
- Heilongjiang Provincial Key Laboratory of Trace Elements and Human Health, Harbin Medical University, Harbin, 150081, Heilongjiang Province, China
- Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin, 150081, Heilongjiang Province, China
| | - Junrui Pei
- Key Laboratory of Etiology and Epidemiology, National Health Commission & Education Bureau of Heilongjiang Province (23618504), Education Bureau of Heilongjiang Province, Harbin Medical University, Harbin, 150081, Heilongjiang Province, China.
- Heilongjiang Provincial Key Laboratory of Trace Elements and Human Health, Harbin Medical University, Harbin, 150081, Heilongjiang Province, China.
- Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin, 150081, Heilongjiang Province, China.
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Luo H, Liu R, Lang Y, Zhao J, Zhuang C, Wang J, Liang C, Zhang J. Melatonin alleviated fluoride-induced impairment of spermatogenesis and sperm maturation process via Interleukin-17A. Food Chem Toxicol 2023:113867. [PMID: 37269891 DOI: 10.1016/j.fct.2023.113867] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2023] [Revised: 05/24/2023] [Accepted: 05/31/2023] [Indexed: 06/05/2023]
Abstract
Fluoride-induced male reproductive failure is a major environmental and human health concern, but interventions are still lacking. Melatonin (MLT) has potential functions in regulating testicular damage and interleukin-17 (IL-17) production. This study aims to explore whether MLT can mitigate fluoride-induced male reproductive toxicity through IL-17A, and screen the potential targets. So the wild type and IL-17A knockout mice were employed and treated with sodium fluoride (100 mg/L) by drinking water and MLT (10 mg/kg.BW, intraperitoneal injection per two days starting from week 16) for 18 weeks. Bone F- concentrations, grade of dental damage, sperm quality, spermatogenic cells counts, histological morphology of testis and epididymis, and the mRNA expression of spermatogenesis and maturation, classical pyroptosis related and immune factor genes were detected respectively. The results revealed that MLT supplementations alleviated fluoride-induced impairment of spermatogenesis and maturation process, protecting the morphology of testis and epididymis through IL-17A pathway, and Tesk1 and Pten were identified as candidate targets from 29 regulation genes. Taken together, this study demonstrated a new physiological role for MLT in the protection against fluoride-induced reproductive injury and possible regulation mechanisms, which providing a useful therapeutic strategy for male reproductive function failure caused by fluoride or other environmental pollutants.
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Affiliation(s)
- Huifeng Luo
- College of Veterinary Medicine, Shanxi Agricultural University, Taigu, Shanxi, 030801, PR China
| | - Rongxiu Liu
- 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
| | - Jinhui Zhao
- 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
| | - 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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Ding H, Yin C, Yang M, Zhou R, Wang X, Pan X. Screening of differentially methylated genes in skeletal fluorosis of rats with different types and involvement of aberrant methylation of Cthrc1. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2023:121931. [PMID: 37268221 DOI: 10.1016/j.envpol.2023.121931] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/16/2023] [Revised: 05/12/2023] [Accepted: 05/28/2023] [Indexed: 06/04/2023]
Abstract
Fluoride is a widespread pollutant in the environment. There is a high risk of developing skeletal fluorosis from excessive fluoride exposure. Skeletal fluorosis has different phenotypes (including osteosclerotic, osteoporotic and osteomalacic) under the same fluoride exposure and depends on dietary nutrition. However, the existing mechanistic hypothesis of skeletal fluorosis cannot well explain the condition's different pathological manifestations and their logical relation with nutritional factors. Recent studies have shown that DNA methylation is involved in the occurrence and development of skeletal fluorosis. DNA methylation is dynamic throughout life and may be affected by nutrition and environmental factors. We speculated that fluoride exposure leads to the abnormal methylation of genes related to bone homeostasis under different nutritional statuses, resulting in different skeletal fluorosis phenotypes. The mRNA-Seq and target bisulfite sequencing (TBS) result showed differentially methylated genes in rats with different skeletal fluorosis types. The role of the differentially methylated gene Cthrc1 in the formation of different skeletal fluorosis types was explored in vivo and in vitro. Under normal nutritional conditions, fluoride exposure led to hypomethylation and high expression of Cthrc1 in osteoblasts through TET2 demethylase, which promoted osteoblast differentiation by activating Wnt3a/β-catenin signalling pathway, and participated in the occurrence of osteosclerotic skeletal fluorosis. Meanwhile, the high CTHRC1 protein expression also inhibited osteoclast differentiation. Under poor dietary conditions, fluoride exposure led to hypermethylation and low expression of Cthrc1 in osteoblasts through DNMT1 methyltransferase, and increased the RANKL/OPG ratio, which promoted the osteoclast differentiation and participated in the occurrence of osteoporotic/osteomalacic skeletal fluorosis. Our study expands the understanding of the role of DNA methylation in regulating the formation of different skeletal fluorosis types and provides insights into new prevention and treatment strategies for patients with skeletal fluorosis.
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Affiliation(s)
- Hongwei Ding
- School of Public Health, The Key Laboratory of Environmental Pollution Monitoring and Disease Control, Ministry of Education, Guizhou Medical University, Guiyang, 550025, Guizhou, People's Republic of China
| | - Congyu Yin
- School of Public Health, The Key Laboratory of Environmental Pollution Monitoring and Disease Control, Ministry of Education, Guizhou Medical University, Guiyang, 550025, Guizhou, People's Republic of China
| | - Menglan Yang
- School of Public Health, The Key Laboratory of Environmental Pollution Monitoring and Disease Control, Ministry of Education, Guizhou Medical University, Guiyang, 550025, Guizhou, People's Republic of China
| | - Ruiqi Zhou
- School of Public Health, The Key Laboratory of Environmental Pollution Monitoring and Disease Control, Ministry of Education, Guizhou Medical University, Guiyang, 550025, Guizhou, People's Republic of China
| | - Xilan Wang
- School of Public Health, The Key Laboratory of Environmental Pollution Monitoring and Disease Control, Ministry of Education, Guizhou Medical University, Guiyang, 550025, Guizhou, People's Republic of China
| | - Xueli Pan
- School of Public Health, The Key Laboratory of Environmental Pollution Monitoring and Disease Control, Ministry of Education, Guizhou Medical University, Guiyang, 550025, Guizhou, People's Republic of China.
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Wang J, Yu C, Zhang J, Liu R, Xiao J. Aberrant gut microbiota and fecal metabolites in patients with coal-burning endemic fluorosis in Guizhou, China. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023:10.1007/s11356-023-27051-9. [PMID: 37140865 DOI: 10.1007/s11356-023-27051-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/01/2023] [Accepted: 04/12/2023] [Indexed: 05/05/2023]
Abstract
Chronic exposure to excessive environmental fluoride has caused fluorosis to become a major public health problem worldwide. Although studies on stress pathways, signaling pathways, and apoptosis induced by fluoride have provided an in-depth understanding of the mechanism of this disease, its exact pathogenesis remains unclear. We hypothesized that the human gut microbiota and metabolome are associated with the pathogenesis of this disease. To get further insight into the profiles of intestinal microbiota and metabolome in coal-burning-induced endemic fluorosis patients, we conducted 16S rRNA sequencing of the intestinal microbial DNA and carried out non-targeted metabolomics of fecal samples from 32 patients with skeletal fluorosis and 33 matched healthy controls in Guizhou, China. We found that the gut microbiota of coal-burning endemic fluorosis patients displayed significant differences in composition, diversity, and abundance compared with healthy controls. This was characterized by an increase in the relative abundance of Verrucomicrobiota, Desulfobacterota, Nitrospirota, Crenarchaeota, Chloroflexi, Myxococcota, Acidobacteriota, Proteobacteria, and unidentified_Bacteria, and a significant decrease in the relative abundance of Firmicutes and Bacteroidetes at the phylum level. Additionally, at the genus level, the relative abundance of some beneficial bacteria, such as Bacteroides, Megamonas, Bifidobacterium, and Faecalibacterium, was significantly reduced. We also demonstrated that, at the genus level, some gut microbial markers, including Anaeromyxobacter, MND1, oc32, Haliangium, and Adurb.Bin063_1, showed potential for identifying coal-burning endemic fluorosis. Moreover, non-targeted metabolomics and correlation analysis revealed the changes in the metabolome, particularly the gut microbiota-derived tryptophan metabolites such as tryptamine, 5-hydroxyindoleacetic acid, and indoleacetaldehyde. Our results indicated that excessive fluoride might cause xenobiotic-mediated dysbiosis of human gut microbiota and metabolic disorders. These findings suggest that the alterations in gut microbiota and metabolome play vital roles in regulating disease susceptibility and multi-organ damage after excessive fluoride exposure.
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Affiliation(s)
- Jianbin Wang
- Institute of Medicinal Biotechnology, Affiliated Hospital of Zunyi Medical University, 149 Dalian Road, Huichuan District, Zunyi, 563003, China
- Zunyi Municipal Key Laboratory of Medicinal Biotechnology & Guizhou Provincial Research Center for Translational Medicine, Affiliated Hospital of Zunyi Medical University, 149 Dalian Road, Huichuan District, Zunyi, 563003, China
- Department of Endocrinology, Affiliated Hospital of Zunyi Medical University, 149 Dalian Road, Huichuan District, Zunyi, 563003, China
| | - Chao Yu
- Institute of Medicinal Biotechnology, Affiliated Hospital of Zunyi Medical University, 149 Dalian Road, Huichuan District, Zunyi, 563003, China
| | - Jiarong Zhang
- Institute of Medicinal Biotechnology, Affiliated Hospital of Zunyi Medical University, 149 Dalian Road, Huichuan District, Zunyi, 563003, China
| | - Ruming Liu
- Institute of Medicinal Biotechnology, Affiliated Hospital of Zunyi Medical University, 149 Dalian Road, Huichuan District, Zunyi, 563003, China
- Zunyi Municipal Key Laboratory of Medicinal Biotechnology & Guizhou Provincial Research Center for Translational Medicine, Affiliated Hospital of Zunyi Medical University, 149 Dalian Road, Huichuan District, Zunyi, 563003, China
| | - Jianhui Xiao
- Institute of Medicinal Biotechnology, Affiliated Hospital of Zunyi Medical University, 149 Dalian Road, Huichuan District, Zunyi, 563003, China.
- Zunyi Municipal Key Laboratory of Medicinal Biotechnology & Guizhou Provincial Research Center for Translational Medicine, Affiliated Hospital of Zunyi Medical University, 149 Dalian Road, Huichuan District, Zunyi, 563003, China.
- Department of Endocrinology, Affiliated Hospital of Zunyi Medical University, 149 Dalian Road, Huichuan District, Zunyi, 563003, China.
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Yang J, Huang T, Zhang J, Bai G, Wang W, Yao J, Chen Z, Tu C. Sulphur dioxide and fluoride co-exposure cause enamel damage by disrupting the Cl -/HCO 3- ion transport. J Trace Elem Med Biol 2023; 77:127131. [PMID: 36630759 DOI: 10.1016/j.jtemb.2023.127131] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/29/2022] [Revised: 11/21/2022] [Accepted: 01/04/2023] [Indexed: 01/07/2023]
Abstract
OBJECTIVE Although there is growing evidence linking the exposure to sulphur dioxide (SO2) and fluoride to human diseases, there is little data on the co-exposure of SO2 and fluoride. Moreover, literature on SO2 and fluoride co-exposure to enamel damage is insufficient. In this work, we concentrate on the concurrent environmental issues of excessive SO2 and fluoride in several coal-consuming regions. METHOD To identify the toxicity of SO2 and fluoride exposure either separately or together, we used both ICR mice and LS8 cells, and factorial design was employed to assess the type of potential combined action. RESULT In this study, co-exposure to SO2 and fluoride exacerbated enamel damage, resulting in more severe enamel defects of incisor and the damage occurred earlier. Cl-/HCO3- exchanger expression is increased by SO2 and fluoride in mouse incisor. Consistent with in vivo results, co-exposure of SO2 and fluoride decreased pHi and increased [Cl-]i level by increasing the expression of the Cl-/HCO3- exchanger in LS8 cells. Furthermore, SO2 and F may increase merlin protein expression, and merlin deficiency causes AE2 expression to decrease in vitro. CONCLUSION Overall, these results indicate that co-exposure to SO2 and fluoride may result in more toxicity both in vitro and in vivo than a single exposure to SO2 and fluoride, suggesting that residents in areas contaminated with SO2 and fluoride may be more likely to suffer enamel damage.
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Affiliation(s)
- Junlin Yang
- School of Public Health, Guizhou Medical University, Guian New Region, China; The Affiliated Hospital of Guizhou Medical University, Guiyang, China
| | - Tongtong Huang
- School of Public Health, Guizhou Medical University, Guian New Region, China
| | - Jianghui Zhang
- School of Public Health, Guizhou Medical University, Guian New Region, China
| | - Guohui Bai
- Key Laboratory of Oral Disease Research, School of Stomatology, Zunyi Medical University, Zunyi, China
| | - Wentai Wang
- School of Public Health, Guizhou Medical University, Guian New Region, China
| | - Jie Yao
- School of Public Health, Guizhou Medical University, Guian New Region, China
| | - Zheng Chen
- School of Public Health, Guizhou Medical University, Guian New Region, China
| | - Chenglong Tu
- Key Laboratory of Environmental Pollution Monitoring and Disease Control, Ministry of Education, Guizhou Medical University, Guian New Region, China; Toxicity Testing Center of Guizhou Medical University, Guiyang, China.
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Zhang L, Li Y, Tao D, Yang L, Zhang Y, Zhang H, Xie C. The miR-34b-5p-negative target Gnai2 aggravates fluorine combined with aluminum-induced apoptosis of rat offspring hippocampal neurons and NG108-15 cells. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:66822-66839. [PMID: 37186186 DOI: 10.1007/s11356-023-27135-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/15/2023] [Accepted: 04/17/2023] [Indexed: 05/17/2023]
Abstract
It is known that fluorine and aluminum are commonly found in the environment and that long-term overexposure can adversely affect the organism's nervous system, damaging the structure and function of brain tissue. Our previous study showed that fluorine combined with aluminum (FA) could trigger apoptosis in vitro and cause spatial learning and memory impairment and differentially expressed miRNAs (including miR-34b-5p) in the hippocampi in vivo. However, the detailed mechanism is unclear. Learning memory damage is implicated in excessive hippocampal neuron apoptosis, and miR-34b-5p participates in regulating the hippocampal neuron apoptosis. Thus, in the current research, Sprague-Dawley (SD) rats were subjected to FA, and NG108-15 control cells and NG108-15 cells pretransfected with miR-34b-5p agomir or antagomir were exposed to FA. We found that FA triggered apoptosis of rat hippocampal neurons and NG108-15 cells, increased miR-34b-5p expression, and decreased Gnai2, PKA, ERK and CREB expression. Inhibition of miR-34b-5p alleviated FA-induced NG108-15 cell apoptosis and further increased Gnai2, PKA, ERK, and CREB expression, and vice versa. Furthermore, miR-34b-5p modulated the level of Gnai2 by directly targeting its 3'-untranslated region (UTR), as verified through the dual Luciferase reporter assay. These outcomes suggested that miR-34b-5p participated in FA-induced neuronal apoptosis by targeting Gnai2 negatively, thereby inhibiting the PKA/ERK/CREB signaling pathway.
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Affiliation(s)
- Luwen Zhang
- School of Public Health, The Key Laboratory of Environmental Pollution Monitoring and Disease Control, Ministry of Education, Guizhou Medical University, Guiyang, 550025, China
| | - Yang Li
- School of Public Health, The Key Laboratory of Environmental Pollution Monitoring and Disease Control, Ministry of Education, Guizhou Medical University, Guiyang, 550025, China
| | - Dan Tao
- School of Public Health, The Key Laboratory of Environmental Pollution Monitoring and Disease Control, Ministry of Education, Guizhou Medical University, Guiyang, 550025, China
| | - Liu Yang
- School of Public Health, The Key Laboratory of Environmental Pollution Monitoring and Disease Control, Ministry of Education, Guizhou Medical University, Guiyang, 550025, China
| | - Yue Zhang
- Department of Pharmacology, School of Basic Medical Sciences, Guizhou Medical University, Guiyang, 550025, China
| | - Hua Zhang
- School of Public Health, The Key Laboratory of Environmental Pollution Monitoring and Disease Control, Ministry of Education, Guizhou Medical University, Guiyang, 550025, China
| | - Chun Xie
- School of Public Health, The Key Laboratory of Environmental Pollution Monitoring and Disease Control, Ministry of Education, Guizhou Medical University, Guiyang, 550025, China.
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Bibi S, Habib R, Shafiq S, Abbas SS, Khan S, Eqani SAMAS, Nepovimova E, Khan MS, Kuca K, Nurulain SM. Influence of the chronic groundwater fluoride consumption on cholinergic enzymes, ACHE and BCHE gene SNPs and pro-inflammatory cytokines: A study with Pakistani population groups. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 880:163359. [PMID: 37030382 DOI: 10.1016/j.scitotenv.2023.163359] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/22/2023] [Revised: 04/02/2023] [Accepted: 04/03/2023] [Indexed: 04/15/2023]
Abstract
Fluoride is one of the abundant elements found in the Earth's crust and is a global environmental issue. The present work aimed to find the impact of chronic consumption of fluoride contained groundwater on human subjects. Five hundred and twelve volunteers from different areas of Pakistan were recruited. Cholinergic status, acetylcholinesterase and butyrylcholinesterase gene SNPs and pro-inflammatory cytokines were examined. Association analysis, regression and other standard statistical analyses were performed. Physical examination of the fluoride endemic areas' participants revealed the symptoms of dental and skeletal fluorosis. Cholinergic enzymes (AChE and BChE) were significantly increased among different exposure groups. ACHE gene 3'-UTR variant and BCHE K-variant showed a significant association with risk of fluorosis. Pro-inflammatory cytokines (TNF-α, IL-1β and IL-6) were found to be increased and have a significant correlation in response to fluoride exposure and cholinergic enzymes. The study concludes that chronic consumption of high fluoride-contained water is a risk factor for developing low-grade systemic inflammation through the cholinergic pathway and the studied cholinergic gene SNPs were identified to be associated with the risk of flurosis.
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Affiliation(s)
- Sara Bibi
- Department of Biosciences, COMSATS University Islamabad, Park Road Tarlai, Islamabad 45550, Pakistan
| | - Rabia Habib
- Department of Biosciences, COMSATS University Islamabad, Park Road Tarlai, Islamabad 45550, Pakistan
| | - Sania Shafiq
- Department of Biosciences, COMSATS University Islamabad, Park Road Tarlai, Islamabad 45550, Pakistan
| | - Syed Sayyam Abbas
- Department of Biosciences, COMSATS University Islamabad, Park Road Tarlai, Islamabad 45550, Pakistan
| | - Shaiza Khan
- Department of Biosciences, COMSATS University Islamabad, Park Road Tarlai, Islamabad 45550, Pakistan
| | | | - Eugenie Nepovimova
- Department of Chemistry, Faculty of Science, University of Hradec Kralove, Hradec Kralove, Czech Republic
| | - Mansoor Shaukat Khan
- Department of Mathematics, COMSATS University Islamabad, Park Road Tarlai, Islamabad 45550, Pakistan
| | - Kamil Kuca
- Department of Chemistry, Faculty of Science, University of Hradec Kralove, Hradec Kralove, Czech Republic; Andalusian Research Institute in Data Science and Computational Intelligence (DaSCI), University of Granada, 18071 Granada, Spain; Biomedical Research Centre, University Hospital in Hradec Kralove, Sokolska 581, 50005 Hradec Kralove, Czech Republic.
| | - Syed Muhammad Nurulain
- Department of Biosciences, COMSATS University Islamabad, Park Road Tarlai, Islamabad 45550, Pakistan
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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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Lavalle-Carrasco J, Vergara-Onofre M, González-González R, Bologna-Molina R, Isiordia-Espinoza MA, Gaona E, Molina-Frechero N. A Systematic Review and Meta-Analysis of the Relationship Between the Severity of Dental Fluorosis and Fluoride Biomarkers in Endemic Areas. Biol Trace Elem Res 2023; 201:1051-1062. [PMID: 35397104 DOI: 10.1007/s12011-022-03227-1] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/21/2022] [Accepted: 03/30/2022] [Indexed: 02/07/2023]
Abstract
The intake of high concentrations of fluoride, mainly through drinking water, diet and fluoridated dentifrices, produces fluorosis, which in its early stages is manifested as dental fluorosis (DF). To recognize exposure to fluoride in endemic areas and to evaluate the risk of developing health impairment, the WHO has established several biomarkers that are used to determine systemic fluorine (F-) exposure. Thus, the aim of this study was to conduct a systematic review and meta-analysis of the relationship between the severity of DF and fluoride biomarkers in endemic areas. The protocol of this study was previously registered as CRD42021244974. A digital search was carried out in PubMed/Medline, SpringerLink, Scopus, Cochrane and Google Scholar by employing the keywords "urine", "nails", "hair", "plasma", "saliva" and "dental fluorosis" for the original studies with content associated with F- for the biomarkers and DF. The mean difference was established as the effect measure for the meta-analysis. Seven studies fulfilled the eligibility criteria, among which five assessed urine and two employed nails as fluoride biomarkers. A positive significant difference was found between the biomarkers and the severity of DF (0.27, p < 0.001) and individually for each biomarker (urine: 0.14, p = 0.001; nails: 0.88, p < 0.05). The F- concentration in urine and nails is correlated with the severity of DF, with the most evident differences between healthy individuals and those with mild severity. Both biomarkers are adequate to assess this relationship in endemic areas of fluoride and DF.
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Affiliation(s)
- Jesús Lavalle-Carrasco
- Dental Sciences, Autonomous Metropolitan University Xochimilco (UAM), 04960, Mexico City, Mexico
| | - Marcela Vergara-Onofre
- Division of Biological and Health Sciences, Autonomous Metropolitan University Xochimilco (UAM), 04960, Mexico City, Mexico
| | - Rogelio González-González
- Department of Research, School of Dentistry, Juarez University of the Durango State (UJED), 34000, Durango, Mexico
| | - Ronell Bologna-Molina
- Department of Research, School of Dentistry, Juarez University of the Durango State (UJED), 34000, Durango, Mexico
- Molecular Pathology Area, School of Dentistry, University of the Republic (UDELAR), 11200, Montevideo, Uruguay
| | - Mario Alberto Isiordia-Espinoza
- Institute of Research in Medical Sciences, Department of Clinics, Los Altos University Center, University of Guadalajara (UdG), 47650, Tepatitlán de Morelos, Jalisco, Mexico
| | - Enrique Gaona
- Division of Biological and Health Sciences, Autonomous Metropolitan University Xochimilco (UAM), 04960, Mexico City, Mexico
| | - Nelly Molina-Frechero
- Division of Biological and Health Sciences, Autonomous Metropolitan University Xochimilco (UAM), 04960, Mexico City, Mexico.
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Ma L, Zhang C, Gui Y, Zou T, Xi S, Guo X. Fluoride regulates the differentiation and atrophy through FGF21/ERK signaling pathway in C2C12 cells. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2023; 252:114626. [PMID: 36764073 DOI: 10.1016/j.ecoenv.2023.114626] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/23/2022] [Revised: 02/03/2023] [Accepted: 02/06/2023] [Indexed: 06/18/2023]
Abstract
Excess intake of fluoride leads to a serious health issue called fluorosis. Fluorosis patients exhibit the symptom of muscle damage, but the specific mechanism remains unclear. Fibroblast growth factor 21 (FGF21) is a novel myokine that is involved in the regulation of myogenic differentiation, but whether fluoride induces skeletal muscle damage via FGF21 signaling has not been reported yet. In the current study, C2C12 cells were used to investigate the impact of fluoride on myogenic development and the involved regulatory role of FGF21/ERK signaling pathway. The expressions of the markers of myoblasts development and FGF21/ERK signaling pathway-related molecules were detected after fluoride treatment. The results indicated that fluoride notably inhibited the expressions of myogenic regulatory genes MyoD, MyoG and MyHC in C2C12 cells. In addition, fluoride increased the expressions of muscle atrophy-related markers MuRF1 and MAFbx. We proved that fluoride significantly inhibited the expression of FGF21 based on the RNA-seq results, and detected the expressions of downstream molecules FGFR1, KLB, Raf, MEK and ERK. Moreover, FGF21 pretreatment reversed the adverse effect of fluoride on the C2C12 cells and alleviated the atrophy of myotubes. Taken together, these findings indicated that fluoride suppressed differentiation and aggravated atrophy via FGF21/ERK signaling pathway in C2C12 cells. Our study has provided new evidence for the role of FGF21/ERK in fluoride-induced skeletal muscle damage and FGF21 may be one of the potential targets for prevention and treatment of fluorosis.
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Affiliation(s)
- Lan Ma
- Department of Environmental Health, School of Public Health, China Medical University, No. 77 Puhe Road, Shenyang North New Area, Shenyang, Liaoning Province, PR China
| | - Chengmei Zhang
- Department of Environmental Health, School of Public Health, China Medical University, No. 77 Puhe Road, Shenyang North New Area, Shenyang, Liaoning Province, PR China
| | - Yu Gui
- Department of Environmental Health, School of Public Health, China Medical University, No. 77 Puhe Road, Shenyang North New Area, Shenyang, Liaoning Province, PR China
| | - Tingling Zou
- Department of Environmental Health, School of Public Health, China Medical University, No. 77 Puhe Road, Shenyang North New Area, Shenyang, Liaoning Province, PR China
| | - Shuhua Xi
- Department of Environmental Health, School of Public Health, China Medical University, No. 77 Puhe Road, Shenyang North New Area, Shenyang, Liaoning Province, PR China
| | - Xiaoying Guo
- Department of Environmental Health, School of Public Health, China Medical University, No. 77 Puhe Road, Shenyang North New Area, Shenyang, Liaoning Province, PR China.
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Goodacre CJ, Eugene Roberts W, Munoz CA. Noncarious cervical lesions: Morphology and progression, prevalence, etiology, pathophysiology, and clinical guidelines for restoration. J Prosthodont 2023; 32:e1-e18. [PMID: 35920595 DOI: 10.1111/jopr.13585] [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: 05/22/2022] [Accepted: 07/25/2022] [Indexed: 11/30/2022] Open
Abstract
PURPOSE To synthesize the literature regarding noncarious cervical lesions (NCCLs) and propose clinical guidelines when lesion restoration is indicated. MATERIAL AND METHODS A PubMed search was performed related to NCCL morphology, progression, prevalence, etiology, pathophysiology, and restoration. RESULTS NCCLs form as either rounded (saucerlike) depressions with smooth, featureless surfaces that progress mainly in height or as V-shaped indentations that increase in both height and depth. Prevalence ranges from less than 10% to over 90% and increases with age. Common locations are the facial surfaces of maxillary premolars. They have a multifactorial etiology due to personal habits such as excessive horizontal toothbrushing and consumption of acidic foods and drinks. Occlusal factors have been identified as contributing to the prevalence of NCCLs in some studies, whereas other studies indicate there is no relationship. The concept of abfraction has been proposed whereby mechanical stress from occlusal loading plays a role in the development and progression of NCCLs with publications supporting the concept and others indicating it lacks the required clinical documentation. Regardless of the development mechanism, demineralization occurs and they are one of the most common demineralization diseases in the body. Treatment should be managed conservatively through preventive intervention with restorative treatment delayed until it becomes necessary due to factors such as lesion progression, impact on patient's quality of life, sensitivity, poor esthetics, and food collection may necessitate restoration. Composite resins are commonly used to restore NCCLs although other materials such as glass ionomer and resin-modified glass ionomer are also used. Sclerotic dentin does not etch like normal dentin and therefore it has been recommended to texture the dentin surface with a fine rotary diamond instrument to improve restoration retention. Some clinicians use mechanical retention to increase retention. Beveling of enamel is used to increase the bonding area and retention as well as enhance the esthetic result by gradually creating a color change between the restoration and tooth. Both multistep and single-step adhesives have been used. Dentin etching should be increased to 30 seconds due to the sclerotic dentin with the adhesive agent applied using a light scrubbing motion for 20 seconds but without excessive force that induces substantial bending of a disposable applicator. Both flowable and sculptable composite resins have been successfully used with some clinicians applying and polymerizing a layer of flowable composite resin and then adding an external layer of sculptable composite resin to provide enhanced resistance to wear. When caries is present, silver diamine fluoride has been used to arrest the caries rather than restore the lesion. CONCLUSIONS Noncarious cervical lesions (NCCLs) form as smooth saucerlike depressions or as V-shaped notches. Prevalence values as high as 90% and as low as 10% have been reported due to habits such as excessive toothbrushing and an acidic diet. Occlusal factors have been proposed as contributing to their presence but it remains controversial. Publications have both supported and challenged the concept of abfraction. They are one of the most common demineralization diseases in the body. Conservative treatment through prevention is recommended with restorative treatment delayed as long as possible. When treatment is needed, composite resins are commonly used with proposed restorative guidelines including texturing the sclerotic dentin, beveling the enamel, potential use of mechanical retention, 30 seconds of acid etching, and use of either multistep or single-step adhesives in conjunction with a light scrubbing motion for 20 seconds without excessive force placed on disposable applicators.
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Affiliation(s)
- Charles J Goodacre
- Advanced Education Program in Implant Dentistry, Loma Linda University School of Dentistry, Loma Linda, California
| | - W Eugene Roberts
- Adjunct Professor Mechanical Engineering, Indiana University & Purdue University, Indianapolis, Indiana
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Wang D, Yin K, Zhang Y, Lu H, Hou L, Zhao H, Xing M. Novel pathways of fluoride-induced hepatotoxicity: P53-dependent ferroptosis induced by the SIRT1/FOXOs pathway and Nrf2/HO-1 pathway. Comp Biochem Physiol C Toxicol Pharmacol 2023; 264:109526. [PMID: 36455829 DOI: 10.1016/j.cbpc.2022.109526] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/18/2022] [Revised: 11/14/2022] [Accepted: 11/21/2022] [Indexed: 11/30/2022]
Abstract
Fluoride (F) is an environmental pollutant that continues to threaten human health. Long-term or excessive fluoride exposure can cause a series of acute or chronic systemic and organ-specific diseases. The liver is considered to be one of the important target organs of fluoride poisoning, however, the specific cause of liver damage caused by fluoride is still unclear. In the present study, we identified ferroptosis as a key mechanism of fluoride-induced liver injury. Under fluorosis conditions, lipid peroxidation levels in the liver are significantly increased and iron overload is induced. Combined transcriptomic and metabolomic analysis revealed that activation of the SIRT1/FOXOs pathway is one of the main causes of fluorosis-induced liver damage. Further analysis by in vitro experiments showed that the SIRT1/FOXOs pathway can cause the activation of the Nrf2/HO-1 pathway under the condition of fluorosis, and can activate the P53-dependent ferroptosis pathway, leading to the occurrence of lipid peroxidation and iron accumulation, ultimately leading to ferroptosis. Our study provides insight into the mechanism of fluoride-induced liver injury, and our results also provide strategies for treatment to alleviate liver injury caused by fluorosis.
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Affiliation(s)
- Dongxu Wang
- College of Wildlife and Protected Area, Northeast Forestry University, Harbin 150040, China
| | - Kai Yin
- College of Wildlife and Protected Area, Northeast Forestry University, Harbin 150040, China
| | - Yue Zhang
- College of Wildlife and Protected Area, Northeast Forestry University, Harbin 150040, China
| | - Hongmin Lu
- College of Wildlife and Protected Area, Northeast Forestry University, Harbin 150040, China
| | - Lulu Hou
- College of Wildlife and Protected Area, Northeast Forestry University, Harbin 150040, China
| | - Hongjing Zhao
- College of Wildlife and Protected Area, Northeast Forestry University, Harbin 150040, China
| | - Mingwei Xing
- College of Wildlife and Protected Area, Northeast Forestry University, Harbin 150040, China.
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50
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Yao S, Weng Q, Zhu Y, Liu J, Luo Y, Da D, Zhang Y. Excessive fluoride impairs autophagy flux in ameloblasts which is prevented by the autophagy activator rapamycin. ENVIRONMENTAL TOXICOLOGY 2023; 38:193-204. [PMID: 36190517 DOI: 10.1002/tox.23677] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/18/2022] [Revised: 08/13/2022] [Accepted: 09/17/2022] [Indexed: 06/16/2023]
Abstract
Excessive fluoride intake can cause dental fluorosis during teeth development and growth. However, the mechanisms underlying fluoride-induced enamel damage are still not fully elucidated. Previously, we observed fluoride-induced autophagy in ameloblasts, but the effects of fluoride on autophagy flux in ameloblasts remain unclear. Hence, this study aimed to clarify the effects of fluoride and rapamycin, an autophagy activator, on autophagy flux in ameloblasts. This in vitro study used the murine ameloblast-derived cell line LS8. Cells were treated with different concentrations of sodium fluoride (NaF) to evaluate NaF-induced cytotoxicity. Using transmission electron microscopy, we observed an increase in the number of autophagosomes with increasing fluoride concentrations. Western blot analyses showed increases in microtubule-associated protein 1 light chain 3 (LC3) and SQSTM1 (p62) expression after NaF treatment and an increase in LC3II expression after bafilomycin A1 administration. Together with changes in RFP-GFP-LC3 lentivirus expression, this demonstrated that fluoride impaired autophagy flux. Furthermore, we evaluated whether rapamycin can alleviate fluoride-induced cytotoxicity by restoring autophagy flux. Compared to the NaF-treated group, LS8 cells cotreated with NaF and rapamycin grew considerably better and had significantly decreased p62 expression. Taken together, these data suggest that fluoride-induced impaired autophagosome degradation may damage ameloblasts. This provides experimental in vitro evidence and an explanation for the observed NaF-induced toxicity of ameloblasts. Rapamycin probably alleviates this impairment by decreasing the expression of p62, thereby preventing autophagy defects.
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Affiliation(s)
- Shuran Yao
- Department of Preventive Dentistry, Shanghai Stomatological Hospital & School of Stomatology, Fudan University, Shanghai, China
- Shanghai Key Laboratory of Craniomaxillofacial Development and Diseases, Fudan University, Shanghai, China
| | - Qingqing Weng
- Department of Preventive Dentistry, Shanghai Stomatological Hospital & School of Stomatology, Fudan University, Shanghai, China
- Shanghai Key Laboratory of Craniomaxillofacial Development and Diseases, Fudan University, Shanghai, China
| | - Yiying Zhu
- Department of Preventive Dentistry, Shanghai Stomatological Hospital & School of Stomatology, Fudan University, Shanghai, China
- Shanghai Key Laboratory of Craniomaxillofacial Development and Diseases, Fudan University, Shanghai, China
| | - Jialiang Liu
- Department of Preventive Dentistry, Shanghai Stomatological Hospital & School of Stomatology, Fudan University, Shanghai, China
- Shanghai Key Laboratory of Craniomaxillofacial Development and Diseases, Fudan University, Shanghai, China
| | - Yinyue Luo
- Department of Preventive Dentistry, Shanghai Stomatological Hospital & School of Stomatology, Fudan University, Shanghai, China
- Shanghai Key Laboratory of Craniomaxillofacial Development and Diseases, Fudan University, Shanghai, China
| | - Dongxin Da
- Department of Preventive Dentistry, Shanghai Stomatological Hospital & School of Stomatology, Fudan University, Shanghai, China
- Shanghai Key Laboratory of Craniomaxillofacial Development and Diseases, Fudan University, Shanghai, China
| | - Ying Zhang
- Department of Preventive Dentistry, Shanghai Stomatological Hospital & School of Stomatology, Fudan University, Shanghai, China
- Shanghai Key Laboratory of Craniomaxillofacial Development and Diseases, Fudan University, Shanghai, China
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