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Kumar S, Arwind DA, Kumar B H, Pandey S, Nayak R, Vithalkar MP, Kumar N, Pai KSR. Inhibition of STAT3: A promising approach to enhancing the efficacy of chemotherapy in medulloblastoma. Transl Oncol 2024; 46:102023. [PMID: 38852276 DOI: 10.1016/j.tranon.2024.102023] [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: 02/03/2024] [Revised: 05/27/2024] [Accepted: 06/01/2024] [Indexed: 06/11/2024] Open
Abstract
Medulloblastoma is a type of brain cancer that primarily affects children. While chemotherapy has been shown to be effective in treating medulloblastoma, the development of chemotherapy resistance remains a challenge. One potential therapeutic approach is to selectively inhibit the inducible transcription factor called STAT3, which is known to play a crucial role in the survival and growth of tumor cells. The activation of STAT3 has been linked to the growth and progression of various cancers, including medulloblastoma. Inhibition of STAT3 has been shown to sensitize medulloblastoma cells to chemotherapy, leading to improved treatment outcomes. Different approaches to STAT3 inhibition have been developed, including small-molecule inhibitors and RNA interference. Preclinical studies have shown the efficacy of STAT3 inhibitors in medulloblastoma, and clinical trials are currently ongoing to evaluate their safety and effectiveness in patients with various solid tumors, including medulloblastoma. In addition, researchers are also exploring ways to optimize the use of STAT3 inhibitors in combination with chemotherapy and identify biomarkers that can predict treatment that will help to develop personalized treatment strategies. This review highlights the potential of selective inhibition of STAT3 as a novel approach for the treatment of medulloblastoma and suggests that further research into the development of STAT3 inhibitors could lead to improved outcomes for patients with aggressive cancer.
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Affiliation(s)
- Sachindra Kumar
- Department of Pharmacology, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education (MAHE), Manipal 576104, India
| | - Dube Aakash Arwind
- Department of Pharmacology and toxicology, National Institute of Pharmaceutical Education and Research, Hajipur, Vaishali-844102, Bihar, India
| | - Harish Kumar B
- Department of Pharmacology, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education (MAHE), Manipal 576104, India
| | - Samyak Pandey
- Department of Pharmacology, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education (MAHE), Manipal 576104, India
| | - Raksha Nayak
- Department of Pharmacology, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education (MAHE), Manipal 576104, India
| | - Megh Pravin Vithalkar
- Department of Pharmacology, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education (MAHE), Manipal 576104, India
| | - Nitesh Kumar
- Department of Pharmacology and toxicology, National Institute of Pharmaceutical Education and Research, Hajipur, Vaishali-844102, Bihar, India
| | - K Sreedhara Ranganath Pai
- Department of Pharmacology, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education (MAHE), Manipal 576104, India.
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Ba Y, Feng Z, Fu X, Chen R, Jiao X, Du Y, Liu X, Huang H, Yu F, Zhou G. Mediation of mitochondrial DNA copy number and oxidative stress in fluoride-related bone mineral density alteration in Chinese farmers. ENVIRONMENTAL GEOCHEMISTRY AND HEALTH 2024; 46:184. [PMID: 38695941 DOI: 10.1007/s10653-024-01970-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/16/2024] [Accepted: 03/25/2024] [Indexed: 06/17/2024]
Abstract
Excessive fluoride can adversely affect bone mineral density (BMD). Oxidative stress and mitochondrial dysfunction are crucial mechanisms of health damage induced by fluoride. Here, a cross-sectional survey involving 907 Chinese farmers (aged 18-60) was carried out in Tongxu County in 2017, aiming to investigate the significance of mitochondrial DNA copy number (mtDNAcn) and oxidative stress in fluoride-related BMD change. Concentrations of urinary fluoride (UF), serum oxidative stress biomarkers, including total antioxidant capacity (T-AOC), total superoxide dismutase (T-SOD), glutathione peroxidase (GSH-Px), and malondialdehyde (MDA), as well as relative mtDNAcn in peripheral blood were determined. The multivariable linear model and mediation analysis were performed to assess associations between UF, oxidative stress, and relative mtDNAcn with BMD. Results showed that GSH-Px levels increased by 6.98 U/mL [95% confidence interval (CI) 3.41-10.56)] with each 1.0 mg/L increment of UF. After stratification, the T-AOC, relative mtDNAcn, and BMD decreased by 0.04 mmol/L (-0.08 ~ -0.01), 0.29-unit (-0.55 ~ -0.04), and 0.18-unit (-0.33 ~ -0.03) with every 1.0 mg/L elevation of UF in the excessive fluoride group (EFG, adults with UF > 1.6 mg/L), respectively. Furthermore, T-AOC and relative mtDNAcn were favorably related to the BMD in the EFG (β = 0.82, 95%CI 0.16-1.48 for T-AOC; β = 0.11, 95%CI 0.02-0.19 for relative mtDNAcn). Mediation analysis showed that relative mtDNAcn and T-AOC mediated 15.4% and 17.1% of the connection between excessive fluoride and reduced BMD, respectively. Findings suggested that excessive fluoride was related to lower BMD in adults, and the decrement of T-AOC and relative mtDNAcn partially mediate this relationship.
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Affiliation(s)
- Yue Ba
- Department of Occupational and Environmental Health, School of Public Health, Zhengzhou University, Zhengzhou, 450001, Henan, China
- Yellow River Institute for Ecological Protection & Regional Coordinated Development, Zhengzhou University, Zhengzhou, 450001, Henan, China
| | - Zichen Feng
- Department of Occupational and Environmental Health, School of Public Health, Zhengzhou University, Zhengzhou, 450001, Henan, China
| | - Xiaoli Fu
- Department of Health Management, School of Public Health, Zhengzhou University, Zhengzhou, 450001, Henan, China
| | - Ruiqin Chen
- Department of Epidemiology, Jinshui District Center for Disease Control and Prevention, Zhengzhou, 450053, Henan, China
| | - Xuecheng Jiao
- Department of Epidemic Prevention and Control, Puyang Center for Disease Control and Prevention, Puyang, 457001, Henan, China
| | - Yuhui Du
- Department of Occupational and Environmental Health, School of Public Health, Zhengzhou University, Zhengzhou, 450001, Henan, China
| | - Xiaoxue Liu
- Department of Occupational and Environmental Health, School of Public Health, Zhengzhou University, Zhengzhou, 450001, Henan, China
| | - Hui Huang
- Department of Occupational and Environmental Health, School of Public Health, Zhengzhou University, Zhengzhou, 450001, Henan, China
| | - Fangfang Yu
- Department of Occupational and Environmental Health, School of Public Health, Zhengzhou University, Zhengzhou, 450001, Henan, China
- Yellow River Institute for Ecological Protection & Regional Coordinated Development, Zhengzhou University, Zhengzhou, 450001, Henan, China
| | - Guoyu Zhou
- Department of Occupational and Environmental Health, School of Public Health, Zhengzhou University, Zhengzhou, 450001, Henan, China.
- Yellow River Institute for Ecological Protection & Regional Coordinated Development, Zhengzhou University, Zhengzhou, 450001, Henan, China.
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Ji Y, Guo N, Lu C, Zhang M, Wang S, Yang L, Li Q, Lv M, Yang Y, Gao Y. Association between mtDNA haplogroups and skeletal fluorosis in Han population residing in drinking water endemic fluorosis area of northern China. INTERNATIONAL JOURNAL OF ENVIRONMENTAL HEALTH RESEARCH 2024; 34:2397-2406. [PMID: 37660259 DOI: 10.1080/09603123.2023.2253161] [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: 05/24/2023] [Accepted: 08/24/2023] [Indexed: 09/04/2023]
Abstract
To investigate the association between mtDNA genetic information and the risk of SF, individuals were conducted in the drinking water endemic fluorosis area in northern China, sequenced the whole genome of mtDNA, identified the SNPs and SNVs, analyzed the haplogroups, and diagnosed SF, and then, the effect of mtDNA genetic information on the risk of SF was evaluated. We find that, D5 haplogroup and its specific SNPs reduced the risk, while the D4 haplogroup and its specific SNPs increased the risk of SF. The number of SNVs in coding regions of mitochondrial respiratory chain (MRC) is different between the controls and cases. This suggests that D5 haplogroup may play a protective role in the risk of SF, while the opposite is observed for the D4 haplogroup, this may relate to their specific SNPs. And SNVs that encode the MRC complex may also be associated with the risk of SF.
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Affiliation(s)
- Yi Ji
- Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin, Heilongjiang Province, China
- Key Lab of Etiology and Epidemiology, Education Bureau of Heilongjiang Province & Ministry of Health of P. R. China, Harbin Medical University, Harbin, Heilongjiang Province, China
| | - Ning Guo
- Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin, Heilongjiang Province, China
- Key Lab of Etiology and Epidemiology, Education Bureau of Heilongjiang Province & Ministry of Health of P. R. China, Harbin Medical University, Harbin, Heilongjiang Province, China
| | - Chunqing Lu
- Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin, Heilongjiang Province, China
- Key Lab of Etiology and Epidemiology, Education Bureau of Heilongjiang Province & Ministry of Health of P. R. China, Harbin Medical University, Harbin, Heilongjiang Province, China
| | - Meichen Zhang
- Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin, Heilongjiang Province, China
- Key Lab of Etiology and Epidemiology, Education Bureau of Heilongjiang Province & Ministry of Health of P. R. China, Harbin Medical University, Harbin, Heilongjiang Province, China
| | - Sa Wang
- Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin, Heilongjiang Province, China
- Key Lab of Etiology and Epidemiology, Education Bureau of Heilongjiang Province & Ministry of Health of P. R. China, Harbin Medical University, Harbin, Heilongjiang Province, China
| | - Liu Yang
- Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin, Heilongjiang Province, China
- Key Lab of Etiology and Epidemiology, Education Bureau of Heilongjiang Province & Ministry of Health of P. R. China, Harbin Medical University, Harbin, Heilongjiang Province, China
| | - Qiao Li
- Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin, Heilongjiang Province, China
- Key Lab of Etiology and Epidemiology, Education Bureau of Heilongjiang Province & Ministry of Health of P. R. China, Harbin Medical University, Harbin, Heilongjiang Province, China
| | - Man Lv
- Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin, Heilongjiang Province, China
- Key Lab of Etiology and Epidemiology, Education Bureau of Heilongjiang Province & Ministry of Health of P. R. China, Harbin Medical University, Harbin, Heilongjiang Province, China
| | - Yanmei Yang
- Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin, Heilongjiang Province, China
- Key Lab of Etiology and Epidemiology, Education Bureau of Heilongjiang Province & Ministry of Health of P. R. China, Harbin Medical University, Harbin, Heilongjiang Province, China
| | - Yanhui Gao
- Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin, Heilongjiang Province, China
- Key Lab of Etiology and Epidemiology, Education Bureau of Heilongjiang Province & Ministry of Health of P. R. China, Harbin Medical University, Harbin, Heilongjiang Province, China
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4
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Hu Y, Li Y, Li M, Zhao T, Zhang W, Wang Y, He Y, Zhao H, Li H, Wang T, Zhao Y, Wang J, Wang J. Calcium supplementation attenuates fluoride-induced bone injury via PINK1/Parkin-mediated mitophagy and mitochondrial apoptosis in mice. JOURNAL OF HAZARDOUS MATERIALS 2024; 465:133411. [PMID: 38181596 DOI: 10.1016/j.jhazmat.2023.133411] [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: 10/19/2023] [Revised: 12/27/2023] [Accepted: 12/29/2023] [Indexed: 01/07/2024]
Abstract
Excessive consumption of fluoride can cause skeletal fluorosis. Mitophagy has been identified as a novel target for bone disorders. Meanwhile, calcium supplementation has shown great potential for mitigating fluoride-related bone damage. Hence, this study aimed to elucidate the association between mitophagy and skeletal fluorosis and the precise mechanisms through which calcium alleviates these injuries. A 100 mg/L sodium fluoride (NaF) exposure model in Parkin knockout (Parkin-/-) mice and a 100 mg/L NaF exposure mouse model with 1% calcium carbonate (CaCO3) intervention were established in the current study. Fluoride exposure caused the impairment of mitochondria and activation of PTEN-induced putative kinase1 (PINK1)/E3 ubiquitin ligase Park2 (Parkin)-mediated mitophagy and mitochondrial apoptosis in the bones, which were restored after blocking Parkin. Additionally, the intervention model showed fluoride-exposed mice exhibited abnormal bone trabecula and mechanical properties. Still, these bone injuries could be effectively attenuated by adding 1% calcium to their diet, which reversed fluoride-activated mitophagy and apoptosis. To summarize, fluoride can activate bone mitophagy through the PINK1/Parkin pathway and mitochondrial apoptosis. Parkin-/- and 1% calcium provide protection against fluoride-induced bone damage. Notably, this study provides theoretical bases for the prevention and therapy of animal and human health and safety caused by environmental fluoride contamination.
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Affiliation(s)
- Yingjun Hu
- College of Veterinary Medicine, Shanxi Agricultural University, Taigu, Jinzhong 030801, Shanxi, PR China
| | - Yuanyuan Li
- College of Veterinary Medicine, Shanxi Agricultural University, Taigu, Jinzhong 030801, Shanxi, PR China
| | - Meng Li
- College of Veterinary Medicine, Shanxi Agricultural University, Taigu, Jinzhong 030801, Shanxi, PR China
| | - Tianrui Zhao
- College of Veterinary Medicine, Shanxi Agricultural University, Taigu, Jinzhong 030801, Shanxi, PR China
| | - Wenhui Zhang
- College of Veterinary Medicine, Shanxi Agricultural University, Taigu, Jinzhong 030801, Shanxi, PR China
| | - Yinghui Wang
- College of Veterinary Medicine, Shanxi Agricultural University, Taigu, Jinzhong 030801, Shanxi, PR China
| | - Yang He
- College of Veterinary Medicine, Shanxi Agricultural University, Taigu, Jinzhong 030801, Shanxi, PR China
| | - Hui Zhao
- College of Veterinary Medicine, Shanxi Agricultural University, Taigu, Jinzhong 030801, Shanxi, PR China
| | - Haojie Li
- College of Veterinary Medicine, Shanxi Agricultural University, Taigu, Jinzhong 030801, Shanxi, PR China
| | - Tianyu Wang
- College of Veterinary Medicine, Shanxi Agricultural University, Taigu, Jinzhong 030801, Shanxi, PR China
| | - Yangfei Zhao
- College of Veterinary Medicine, Shanxi Agricultural University, Taigu, Jinzhong 030801, Shanxi, PR China
| | - Jundong Wang
- College of Veterinary Medicine, Shanxi Agricultural University, Taigu, Jinzhong 030801, Shanxi, PR China
| | - Jinming Wang
- College of Veterinary Medicine, Shanxi Agricultural University, Taigu, Jinzhong 030801, Shanxi, PR China.
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Gao Y, Liu Y, Jiang Y, Qin M, Guan Z, Gao Y, Yang Y. Association between polymorphism and haplotype of ATP2B1 gene and skeletal fluorosis in Han population. INTERNATIONAL JOURNAL OF ENVIRONMENTAL HEALTH RESEARCH 2024; 34:1410-1420. [PMID: 37211801 DOI: 10.1080/09603123.2023.2213159] [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: 02/28/2023] [Accepted: 05/09/2023] [Indexed: 05/23/2023]
Abstract
To evaluate the association between ATP2B1 gene polymorphisms and skeletal fluorosis, a cross-sectional study was conducted. In China, 962 individuals were recruited, including 342 cases of skeletal fluorosis. Four TP2BA1 polymorphisms (rs2070759, rs12817819, rs17249754, and rs7136259) were analysed. The results suggested that rs17249754 and rs7136259 were associated with skeletal fluorosis. After controlling confounders, the protective effect of GG genotype in rs17249754 was apparent in individuals over 45 years old, female, with urine fluoride concentration below 1.6 mg/L, serum calcium above 2.25 mmol/L or serum phosphorus between 1.1 and 1.3. Heterozygote TC in rs7136259 increased the risk of skeletal fluorosis in subjects who are elderly, female, with urinary fluoride more than 1.6 mg/L, serum calcium more than 2.25 mmol/L and blood phosphorus between 1.1 and 1.3 mmol/L. Four loci were found to be tightly related by linkage disequilibrium analysis, and the frequency of distribution of haplotype GCGT was lower in the skeletal fluorosis group.
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Affiliation(s)
- Yue Gao
- Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin, China
- Key Lab of Etiology and Epidemiology, Education Bureau of Heilongjiang Province, Ministry of Health of P. R. China, Harbin Medical University, Harbin, China
| | - Yang Liu
- Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin, China
- Key Lab of Etiology and Epidemiology, Education Bureau of Heilongjiang Province, Ministry of Health of P. R. China, Harbin Medical University, Harbin, China
| | - Yuting Jiang
- Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin, China
- Key Lab of Etiology and Epidemiology, Education Bureau of Heilongjiang Province, Ministry of Health of P. R. China, Harbin Medical University, Harbin, China
| | - Ming Qin
- Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin, China
- Key Lab of Etiology and Epidemiology, Education Bureau of Heilongjiang Province, Ministry of Health of P. R. China, Harbin Medical University, Harbin, China
| | - Zhizhong Guan
- Department of Pathology, Hospital of Guizhou Medical University, Guiyang, China
- Key Laboratory of Endemic and Ethnic Diseases of the Ministry of Education of P. R. China, Guizhou Medical University, Guiyang, China
| | - Yanhui Gao
- Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin, China
- Key Lab of Etiology and Epidemiology, Education Bureau of Heilongjiang Province, Ministry of Health of P. R. China, Harbin Medical University, Harbin, China
| | - Yanmei Yang
- Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin, China
- Key Lab of Etiology and Epidemiology, Education Bureau of Heilongjiang Province, Ministry of Health of P. R. China, Harbin Medical University, Harbin, China
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Zhang M, Xu H, Lou Q, Yin F, Guo N, Wu L, Huang W, Ji Y, Yang L, Li Q, Wang S, Guan Z, Yang Y, Gao Y. LDL receptor-related protein 5 rs648438 polymorphism is associated with the risk of skeletal fluorosis. INTERNATIONAL JOURNAL OF ENVIRONMENTAL HEALTH RESEARCH 2024; 34:687-696. [PMID: 36617395 DOI: 10.1080/09603123.2022.2163989] [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: 10/19/2022] [Accepted: 12/24/2022] [Indexed: 06/17/2023]
Abstract
To investigate the potential association between LRP5 rs648438 polymorphism and the risk of skeletal fluorosis (SF) was evaluated in a cross-sectional case-control study conducted in Shanxi, China, in 2019. A total of 973 individuals were enrolled in this study, in which cases and controls were 346 and 627, respectively. SF was diagnosed according to the standard WS/192-2008 (China). The LRP5 rs648438 was detected by the multiple PCR and sequencing. LRP5 rs648438 was found to follow a dominant genetic model using a web-based SNP-STATS software. Logistic regression analysis found that the TC/CC genotype of LRP5 rs648438 might be a protective factor for SF. When stratified by gender, this protective effect of TC/CC genotype in rs648438 was pronounced in males. There was an interaction between gender and rs648438 on risk of SF. Our study suggested that TC/CC genotype of rs648438 might be a protective factor for water-drinking-type skeletal fluorosis, especially in male participants.
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Affiliation(s)
- Meichen Zhang
- Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin, Heilongjiang, China
- NHC Key Laboratory of Etiology and Epidemiology, Harbin Medical University, Harbin, Heilongjiang, China
| | - Haili Xu
- Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin, Heilongjiang, China
- NHC Key Laboratory of Etiology and Epidemiology, Harbin Medical University, Harbin, Heilongjiang, China
| | - Qun Lou
- Xiamen Center for Disease Control and Prevention, Xiamen, Fujian, China
| | - Fanshuo Yin
- Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin, Heilongjiang, China
- NHC Key Laboratory of Etiology and Epidemiology, Harbin Medical University, Harbin, Heilongjiang, China
| | - Ning Guo
- Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin, Heilongjiang, China
- NHC Key Laboratory of Etiology and Epidemiology, Harbin Medical University, Harbin, Heilongjiang, China
| | - Liaowei Wu
- Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin, Heilongjiang, China
- NHC Key Laboratory of Etiology and Epidemiology, Harbin Medical University, Harbin, Heilongjiang, China
| | - Wei Huang
- Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin, Heilongjiang, China
- NHC Key Laboratory of Etiology and Epidemiology, Harbin Medical University, Harbin, Heilongjiang, China
| | - Yi Ji
- Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin, Heilongjiang, China
- NHC Key Laboratory of Etiology and Epidemiology, Harbin Medical University, Harbin, Heilongjiang, China
| | - Liu Yang
- Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin, Heilongjiang, China
- NHC Key Laboratory of Etiology and Epidemiology, Harbin Medical University, Harbin, Heilongjiang, China
| | - Qiao Li
- Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin, Heilongjiang, China
- NHC Key Laboratory of Etiology and Epidemiology, Harbin Medical University, Harbin, Heilongjiang, China
| | - Sa Wang
- Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin, Heilongjiang, China
- NHC Key Laboratory of Etiology and Epidemiology, Harbin Medical University, Harbin, Heilongjiang, China
| | - Zhizhong Guan
- Department of Pathology and Key Lab of Endemic and Ethnic Diseases, Ministry of Education, Guizhou Medical University, Guiyang, Guizhou, China
| | - Yanmei Yang
- Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin, Heilongjiang, China
- NHC Key Laboratory of Etiology and Epidemiology, Harbin Medical University, Harbin, Heilongjiang, China
| | - Yanhui Gao
- Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin, Heilongjiang, China
- NHC Key Laboratory of Etiology and Epidemiology, Harbin Medical University, Harbin, Heilongjiang, China
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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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8
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Aryan Y, Pon T, Panneerselvam B, Dikshit AK. A comprehensive review of human health risks of arsenic and fluoride contamination of groundwater in the South Asia region. JOURNAL OF WATER AND HEALTH 2024; 22:235-267. [PMID: 38421620 PMCID: wh_2023_082 DOI: 10.2166/wh.2023.082] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/02/2024]
Abstract
The present study found that ∼80 million people in India, ∼60 million people in Pakistan, ∼70 million people in Bangladesh, and ∼3 million people in Nepal are exposed to arsenic groundwater contamination above 10 μg/L, while Sri Lanka remains moderately affected. In the case of fluoride contamination, ∼120 million in India, >2 million in Pakistan, and ∼0.5 million in Sri Lanka are exposed to the risk of fluoride above 1.5 mg/L, while Bangladesh and Nepal are mildly affected. The hazard quotient (HQ) for arsenic varied from 0 to 822 in India, 0 to 33 in Pakistan, 0 to 1,051 in Bangladesh, 0 to 582 in Nepal, and 0 to 89 in Sri Lanka. The cancer risk of arsenic varied from 0 to 1.64 × 1-1 in India, 0 to 1.07 × 10-1 in Pakistan, 0 to 2.10 × 10-1 in Bangladesh, 0 to 1.16 × 10-1 in Nepal, and 0 to 1.78 × 10-2 in Sri Lanka. In the case of fluoride, the HQ ranged from 0 to 21 in India, 0 to 33 in Pakistan, 0 to 18 in Bangladesh, 0 to 10 in Nepal, and 0 to 10 in Sri Lanka. Arsenic and fluoride have adverse effects on animals, resulting in chemical poisoning and skeletal fluorosis. Adsorption and membrane filtration have demonstrated outstanding treatment outcomes.
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Affiliation(s)
- Yash Aryan
- Environmental Science and Engineering Department, Indian Institute of Technology Bombay, Mumbai 400076, India E-mail:
| | - Thambidurai Pon
- Department of Coastal Disaster Management, School of Physical, Chemical and Applied Sciences, Pondicherry University, Port Blair Campus - 744112, Andaman and Nicobar Islands, India
| | - Balamurugan Panneerselvam
- Center of Excellence in Interdisciplinary Research for Sustainable Development, Chulalongkorn University, Bangkok 10330, Thailand
| | - Anil Kumar Dikshit
- Environmental Science and Engineering Department, Indian Institute of Technology Bombay, Mumbai 400076, India
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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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10
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Veneri F, Iamandii I, Vinceti M, Birnbaum LS, Generali L, Consolo U, Filippini T. Fluoride Exposure and Skeletal Fluorosis: a Systematic Review and Dose-response Meta-analysis. Curr Environ Health Rep 2023; 10:417-441. [PMID: 37861949 DOI: 10.1007/s40572-023-00412-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/27/2023] [Indexed: 10/21/2023]
Abstract
PURPOSE OF REVIEW We performed a systematic review and meta-analysis on the relation between fluoride exposure and skeletal fluorosis (SF) using a novel statistical methodology for dose-response modeling. RECENT FINDINGS Skeletal fluorosis, a major health issue that is endemic in some regions, affects millions of people worldwide. However, data regarding the dose-response relation between fluoride exposure and SF are limited and outdated. We included twenty-three studies in the meta-analysis. When comparing the highest versus the lowest fluoride category, the summary risk ratio (RR) for SF prevalence was 2.05 (95% CI 1.60; 2.64), with a value of 2.73 (95% CI 1.92; 3.90) for drinking water and 1.40 (95% CI 0.90; 2.17) for urinary fluoride. The RR by the risk of bias (RoB) was 2.37 (95% CI 1.56; 3.58) and 1.78 (95% CI 1.34; 2.36) for moderate and high RoB studies, respectively. The dose-response curve based on a one-stage cubic spline regression model showed an almost linear positive relation between exposure and SF occurrence starting from relatively low concentrations up to 5 mg/L and 2.5 mg/L, respectively, for water and urinary fluoride, with no substantial increase above this threshold. The RR for developing moderate-severe forms increases at 5.00 mg/L and 2.5 mg/L of water and urinary fluoride, respectively. Better-quality studies are needed to confirm these results, but greater attention should be given to water fluoride levels to prevent SF, in addition to the other potential adverse effects of fluoride exposure.
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Affiliation(s)
- Federica Veneri
- Department of Surgery, Medicine, Dentistry and Morphological Sciences with Transplant Surgery, Oncology and Regenerative Medicine Relevance (CHIMOMO), Unit of Dentistry & Oral-Maxillo-Facial Surgery - University of Modena and Reggio Emilia, 41124, Modena, Italy
- PhD Program in Clinical and Experimental Medicine, Department of Biomedical, Metabolic and Neural Sciences - University of Modena and Reggio Emilia, 41124, Modena, Italy
| | - Inga Iamandii
- Environmental, Genetic and Nutritional Epidemiology Research Center (CREAGEN), Department of Biomedical, Metabolic and Neural Sciences, Medical School - University of Modena and Reggio Emilia, 41124, Modena, Italy
| | - Marco Vinceti
- Environmental, Genetic and Nutritional Epidemiology Research Center (CREAGEN), Department of Biomedical, Metabolic and Neural Sciences, Medical School - University of Modena and Reggio Emilia, 41124, Modena, Italy.
- Department of Epidemiology, Boston University School of Public Health, Boston, MA, 02215, USA.
| | - Linda S Birnbaum
- Nicholas School of the Environment, Duke University, Durham, NC, 27708, USA
| | - Luigi Generali
- Department of Surgery, Medicine, Dentistry and Morphological Sciences with Transplant Surgery, Oncology and Regenerative Medicine Relevance (CHIMOMO), Unit of Dentistry & Oral-Maxillo-Facial Surgery - University of Modena and Reggio Emilia, 41124, Modena, Italy
| | - Ugo Consolo
- Department of Surgery, Medicine, Dentistry and Morphological Sciences with Transplant Surgery, Oncology and Regenerative Medicine Relevance (CHIMOMO), Unit of Dentistry & Oral-Maxillo-Facial Surgery - University of Modena and Reggio Emilia, 41124, Modena, Italy
| | - Tommaso Filippini
- Environmental, Genetic and Nutritional Epidemiology Research Center (CREAGEN), Department of Biomedical, Metabolic and Neural Sciences, Medical School - University of Modena and Reggio Emilia, 41124, Modena, Italy
- School of Public Health, University of California Berkeley, Berkeley, CA, 94720, USA
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11
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Mo Z, Wang J, Meng X, Li A, Li Z, Que W, Wang T, Tarnue KF, Ma X, Liu Y, Yan S, Wu L, Zhang R, Pei J, Wang X. The Dose-Response Effect of Fluoride Exposure on the Gut Microbiome and Its Functional Pathways in Rats. Metabolites 2023; 13:1159. [PMID: 37999254 PMCID: PMC10672837 DOI: 10.3390/metabo13111159] [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: 10/24/2023] [Revised: 11/13/2023] [Accepted: 11/14/2023] [Indexed: 11/25/2023] Open
Abstract
Metabolic activities within the gut microbiome are intimately linked to human health and disease, especially within the context of environmental exposure and its potential ramifications. Perturbations within this microbiome, termed "gut microbiome perturbations", have emerged as plausible intermediaries in the onset or exacerbation of diseases following environmental chemical exposures, with fluoride being a compound of particular concern. Despite the well-documented adverse impacts of excessive fluoride on various human physiological systems-ranging from skeletal to neurological-the nuanced dynamics between fluoride exposure, the gut microbiome, and the resulting dose-response relationship remains a scientific enigma. Leveraging the precision of 16S rRNA high-throughput sequencing, this study meticulously examines the ramifications of diverse fluoride concentrations on the gut microbiome's composition and functional capabilities within Wistar rats. Our findings indicate a profound shift in the intestinal microbial composition following fluoride exposure, marked by a dose-dependent modulation in the abundance of key genera, including Pelagibacterium, Bilophila, Turicibacter, and Roseburia. Moreover, discernible alterations were observed in critical functional and metabolic pathways of the microbiome, such as D-lyxose ketol-isomerase and DNA polymerase III subunit gamma/tau, underscoring the broad-reaching implications of fluoride exposure. Intriguingly, correlation analyses elucidated strong associations between specific bacterial co-abundance groups (CAGs) and these shifted metabolic pathways. In essence, fluoride exposure not only perturbs the compositional equilibrium of the gut microbiota but also instigates profound shifts in its metabolic landscape. These intricate alterations may provide a mechanistic foundation for understanding fluoride's potential toxicological effects mediated via gut microbiome modulation.
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Affiliation(s)
- Zhe Mo
- Key Laboratory of Etiology and Epidemiology, Chinese Center for Disease Control and Prevention, Center for Endemic Disease Control, Education Bureau of Heilongjiang Province & National Health Commission (23618504), Institute for Fluorosis Disease Control, Harbin Medical University, Harbin 150081, China; (Z.M.); (J.W.); (X.M.); (A.L.); (Z.L.); (W.Q.); (T.W.); (K.F.T.); (X.M.); (Y.L.); (S.Y.); (L.W.); (R.Z.)
- Department of Environmental Health, Zhejiang Provincial Center for Disease Control and Prevention, Hangzhou 310051, China
| | - Jian Wang
- Key Laboratory of Etiology and Epidemiology, Chinese Center for Disease Control and Prevention, Center for Endemic Disease Control, Education Bureau of Heilongjiang Province & National Health Commission (23618504), Institute for Fluorosis Disease Control, Harbin Medical University, Harbin 150081, China; (Z.M.); (J.W.); (X.M.); (A.L.); (Z.L.); (W.Q.); (T.W.); (K.F.T.); (X.M.); (Y.L.); (S.Y.); (L.W.); (R.Z.)
| | - Xinyue Meng
- Key Laboratory of Etiology and Epidemiology, Chinese Center for Disease Control and Prevention, Center for Endemic Disease Control, Education Bureau of Heilongjiang Province & National Health Commission (23618504), Institute for Fluorosis Disease Control, Harbin Medical University, Harbin 150081, China; (Z.M.); (J.W.); (X.M.); (A.L.); (Z.L.); (W.Q.); (T.W.); (K.F.T.); (X.M.); (Y.L.); (S.Y.); (L.W.); (R.Z.)
| | - Ailin Li
- Key Laboratory of Etiology and Epidemiology, Chinese Center for Disease Control and Prevention, Center for Endemic Disease Control, Education Bureau of Heilongjiang Province & National Health Commission (23618504), Institute for Fluorosis Disease Control, Harbin Medical University, Harbin 150081, China; (Z.M.); (J.W.); (X.M.); (A.L.); (Z.L.); (W.Q.); (T.W.); (K.F.T.); (X.M.); (Y.L.); (S.Y.); (L.W.); (R.Z.)
| | - Zhe Li
- Key Laboratory of Etiology and Epidemiology, Chinese Center for Disease Control and Prevention, Center for Endemic Disease Control, Education Bureau of Heilongjiang Province & National Health Commission (23618504), Institute for Fluorosis Disease Control, Harbin Medical University, Harbin 150081, China; (Z.M.); (J.W.); (X.M.); (A.L.); (Z.L.); (W.Q.); (T.W.); (K.F.T.); (X.M.); (Y.L.); (S.Y.); (L.W.); (R.Z.)
| | - Wenjun Que
- Key Laboratory of Etiology and Epidemiology, Chinese Center for Disease Control and Prevention, Center for Endemic Disease Control, Education Bureau of Heilongjiang Province & National Health Commission (23618504), Institute for Fluorosis Disease Control, Harbin Medical University, Harbin 150081, China; (Z.M.); (J.W.); (X.M.); (A.L.); (Z.L.); (W.Q.); (T.W.); (K.F.T.); (X.M.); (Y.L.); (S.Y.); (L.W.); (R.Z.)
| | - Tuo Wang
- Key Laboratory of Etiology and Epidemiology, Chinese Center for Disease Control and Prevention, Center for Endemic Disease Control, Education Bureau of Heilongjiang Province & National Health Commission (23618504), Institute for Fluorosis Disease Control, Harbin Medical University, Harbin 150081, China; (Z.M.); (J.W.); (X.M.); (A.L.); (Z.L.); (W.Q.); (T.W.); (K.F.T.); (X.M.); (Y.L.); (S.Y.); (L.W.); (R.Z.)
| | - Korto Fatti Tarnue
- Key Laboratory of Etiology and Epidemiology, Chinese Center for Disease Control and Prevention, Center for Endemic Disease Control, Education Bureau of Heilongjiang Province & National Health Commission (23618504), Institute for Fluorosis Disease Control, Harbin Medical University, Harbin 150081, China; (Z.M.); (J.W.); (X.M.); (A.L.); (Z.L.); (W.Q.); (T.W.); (K.F.T.); (X.M.); (Y.L.); (S.Y.); (L.W.); (R.Z.)
| | - Xu Ma
- Key Laboratory of Etiology and Epidemiology, Chinese Center for Disease Control and Prevention, Center for Endemic Disease Control, Education Bureau of Heilongjiang Province & National Health Commission (23618504), Institute for Fluorosis Disease Control, Harbin Medical University, Harbin 150081, China; (Z.M.); (J.W.); (X.M.); (A.L.); (Z.L.); (W.Q.); (T.W.); (K.F.T.); (X.M.); (Y.L.); (S.Y.); (L.W.); (R.Z.)
| | - Ying Liu
- Key Laboratory of Etiology and Epidemiology, Chinese Center for Disease Control and Prevention, Center for Endemic Disease Control, Education Bureau of Heilongjiang Province & National Health Commission (23618504), Institute for Fluorosis Disease Control, Harbin Medical University, Harbin 150081, China; (Z.M.); (J.W.); (X.M.); (A.L.); (Z.L.); (W.Q.); (T.W.); (K.F.T.); (X.M.); (Y.L.); (S.Y.); (L.W.); (R.Z.)
| | - Shirui Yan
- Key Laboratory of Etiology and Epidemiology, Chinese Center for Disease Control and Prevention, Center for Endemic Disease Control, Education Bureau of Heilongjiang Province & National Health Commission (23618504), Institute for Fluorosis Disease Control, Harbin Medical University, Harbin 150081, China; (Z.M.); (J.W.); (X.M.); (A.L.); (Z.L.); (W.Q.); (T.W.); (K.F.T.); (X.M.); (Y.L.); (S.Y.); (L.W.); (R.Z.)
| | - Lei Wu
- Key Laboratory of Etiology and Epidemiology, Chinese Center for Disease Control and Prevention, Center for Endemic Disease Control, Education Bureau of Heilongjiang Province & National Health Commission (23618504), Institute for Fluorosis Disease Control, Harbin Medical University, Harbin 150081, China; (Z.M.); (J.W.); (X.M.); (A.L.); (Z.L.); (W.Q.); (T.W.); (K.F.T.); (X.M.); (Y.L.); (S.Y.); (L.W.); (R.Z.)
| | - Rui Zhang
- Key Laboratory of Etiology and Epidemiology, Chinese Center for Disease Control and Prevention, Center for Endemic Disease Control, Education Bureau of Heilongjiang Province & National Health Commission (23618504), Institute for Fluorosis Disease Control, Harbin Medical University, Harbin 150081, China; (Z.M.); (J.W.); (X.M.); (A.L.); (Z.L.); (W.Q.); (T.W.); (K.F.T.); (X.M.); (Y.L.); (S.Y.); (L.W.); (R.Z.)
| | - Junrui Pei
- Key Laboratory of Etiology and Epidemiology, Chinese Center for Disease Control and Prevention, Center for Endemic Disease Control, Education Bureau of Heilongjiang Province & National Health Commission (23618504), Institute for Fluorosis Disease Control, Harbin Medical University, Harbin 150081, China; (Z.M.); (J.W.); (X.M.); (A.L.); (Z.L.); (W.Q.); (T.W.); (K.F.T.); (X.M.); (Y.L.); (S.Y.); (L.W.); (R.Z.)
| | - Xiaofeng Wang
- Department of Environmental Health, Zhejiang Provincial Center for Disease Control and Prevention, Hangzhou 310051, China
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12
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Lindsay SE, Smith S, Yang S, Yoo J. Community Water Fluoridation and Rate of Pediatric Fractures. J Am Acad Orthop Surg Glob Res Rev 2023; 7:01979360-202310000-00001. [PMID: 37796978 PMCID: PMC10558222 DOI: 10.5435/jaaosglobal-d-22-00221] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2022] [Revised: 07/26/2023] [Accepted: 08/01/2023] [Indexed: 10/07/2023]
Abstract
BACKGROUND The effect of community water fluoridation on bone fragility and fracture has been inconclusive in the literature. The null hypothesis of this study was that no association was observed between water fluoride level and risk of fracture in children. METHODS Community fluoridation data were obtained from the Centers for Disease Control and Prevention while data on fracture rates were obtained from the PearlDiver database. The rate of fracture type for each state was then compared with state-level fluoridation data using Pearson correlation coefficients and Wilcoxon rank-sum tests. RESULTS Positive correlations were found between the percentage of state water fluoridation and fracture rates for both bone forearm fracture (BBFFx) and femur fracture. Fluoride levels had positive correlations with fracture rates for all fracture types. Increased fracture rates were found between states in the highest quartiles of percentage of state water fluoridation and fluoride water levels for supracondylar humerus fracture and BBFFx. CONCLUSIONS A higher level of water fluoridation was associated with higher rates of supracondylar humerus fracture and BBFFx in children aged 4 to 10 years. These findings do not imply causality, but they suggest that additional investigation into the effect of fluoride on pediatric bone health may be indicated.
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Affiliation(s)
| | - Spencer Smith
- From the Oregon Health & Science University, Portland, OR
| | - Scott Yang
- From the Oregon Health & Science University, Portland, OR
| | - Jung Yoo
- From the Oregon Health & Science University, Portland, OR
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13
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Irigoyen-Camacho ME, Perez-Perez N, Zepeda-Zepeda MA, Velazquez-Alva MC, Castaño-Seiquer A, Barbero-Navarro I, Sanchez-Perez L. Relationships between dental fluorosis and fluoride concentrations in bottled water and groundwater in low-income children in Mexico. FRONTIERS IN ORAL HEALTH 2023; 4:1187463. [PMID: 37377524 PMCID: PMC10291056 DOI: 10.3389/froh.2023.1187463] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2023] [Accepted: 05/17/2023] [Indexed: 06/29/2023] Open
Abstract
Introduction The aim of the current study was to investigate associations between dental fluorosis in children living in low socioeconomic areas in Mexico, and fluoride concentrations in tap water, fluoride concentrations and in bottled water, and body mass index (BMI). Methods A cross-sectional study involving 585 schoolchildren aged 8-12 years was conducted in communities in a southern state of Mexico with >0.7 parts per million (ppm) fluoride in the groundwater. The Thylstrup and Fejerskov index (TFI) was used to evaluate dental fluorosis, and the World Health Organization growth standards were used to calculate age-adjusted and sex-adjusted BMI Z-scores. A BMI Z-score ≤ -1 SD was used as the cut-off point for thinness, and multiple logistic regression models for dental fluorosis (TFI ≥ 4) were constructed. Results The mean fluoride concentration in tap water was 1.39 ppm (SD 0.66), and the mean fluoride concentration in bottled water was 0.32 ppm (SD 0.23). Eighty-four children (14.39%) had a BMI Z-score ≤ -1 SD. More than half (56.1%) of the children presented with dental fluorosis in TFI categories ≥ 4. Children living in areas with higher fluoride concentrations in the tap water [odds ratio (OR) 1.57, p = 0.002] and bottled water (OR 3.03, p < .001) were more likely to have dental fluorosis in the severe categories (TFI ≥ 4). BMI Z-score was associated with the probability of dental fluorosis (TFI ≥ 4; OR 2.11, p < 0.001), and the effect size was 29.3%. Discussion A low BMI Z-score was associated with a higher prevalence of dental fluorosis in the severe category. Awareness of the fluoride concentrations in bottled water may help prevent dental fluorosis, particularly in children exposed to several high fluoride content sources. Children with a low BMI may be more vulnerable to dental fluorosis.
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Affiliation(s)
| | - Nora Perez-Perez
- School of Dentistry, Regional University of the Southeast, Oaxaca de Juárez, Mexico
| | | | | | | | | | - Leonor Sanchez-Perez
- Health Care Department, Metropolitan Autonomous University-Xochimilco, Mexico City, Mexico
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14
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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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15
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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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16
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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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17
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de Carvalho Machado C, Dinis-Oliveira RJ. Clinical and Forensic Signs Resulting from Exposure to Heavy Metals and Other Chemical Elements of the Periodic Table. J Clin Med 2023; 12:jcm12072591. [PMID: 37048674 PMCID: PMC10095087 DOI: 10.3390/jcm12072591] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2022] [Revised: 03/19/2023] [Accepted: 03/28/2023] [Indexed: 03/31/2023] Open
Abstract
Several heavy metals and other chemical elements are natural components of the Earth’s crust and their properties and toxicity have been recognized for thousands of years. Moreover, their use in industries presents a major source of environmental and occupational pollution. Therefore, this ubiquity in daily life may result in several potential exposures coming from natural sources (e.g., through food and water contamination), industrial processes, and commercial products, among others. The toxicity of most chemical elements of the periodic table accrues from their highly reactive nature, resulting in the formation of complexes with intracellular compounds that impair cellular pathways, leading to dysfunction, necrosis, and apoptosis. Nervous, gastrointestinal, hematopoietic, renal, and dermatological systems are the main targets. This manuscript aims to collect the clinical and forensic signs related to poisoning from heavy metals, such as thallium, lead, copper, mercury, iron, cadmium, and bismuth, as well as other chemical elements such as arsenic, selenium, and fluorine. Furthermore, their main sources of occupational and environmental exposure are highlighted in this review. The importance of rapid recognition is related to the fact that, through a high degree of suspicion, the clinician could rapidly initiate treatment even before the toxicological results are available, which can make a huge difference in these patients’ outcomes.
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Affiliation(s)
- Carolina de Carvalho Machado
- Department of Public Health and Forensic Sciences, and Medical Education, Faculty of Medicine, University of Porto, 4200-319 Porto, Portugal
- Correspondence: (C.d.C.M.); or (R.J.D.-O.); Tel.: +351-224-157-216 (R.J.D.-O.)
| | - Ricardo Jorge Dinis-Oliveira
- Department of Public Health and Forensic Sciences, and Medical Education, Faculty of Medicine, University of Porto, 4200-319 Porto, Portugal
- TOXRUN—Toxicology Research Unit, University Institute of Health Sciences (IUCS), CESPU, 4585-116 Gandra, Portugal
- UCIBIO-REQUIMTE-Applied Molecular Biosciences Unit, Laboratory of Toxicology, Department of Biological Sciences, Faculty of Pharmacy, University of Porto, 4050-313 Porto, Portugal
- MTG Research and Development Lab, 4200-604 Porto, Portugal
- Correspondence: (C.d.C.M.); or (R.J.D.-O.); Tel.: +351-224-157-216 (R.J.D.-O.)
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18
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Li W, Sun Z, Li M, Yue B, Zhang X, Zhao Y, Wang J. Exposure to Fluoride From in Utero to Puberty Alters Gonadal Structure and Steroid Hormone Expression in Offspring Rats. Biol Trace Elem Res 2023; 201:1261-1273. [PMID: 35445938 DOI: 10.1007/s12011-022-03220-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/27/2021] [Accepted: 03/28/2022] [Indexed: 02/07/2023]
Abstract
The reproductive toxicity of fluoride has been proven by a large number of studies. While the underlying mechanism of reproductive toxicity during pregnancy is still unclear. Hence, in this study, we investigated the effects of fluoride exposure on ovarian and testicular steroid hormone synthesis in young and adult rat offspring. We established a model of fluoride-exposed rat pups from in utero to puberty to explore the mechanisms of fluoride impacts on reproductive toxicity in the offspring. The results showed that NaF exposure did not affect the 3 weeks of age offspring. Whereas the body weight in both sexes significantly decreased, and the ovarian and testicular tissue structures were damaged at 11 weeks of age. In females, the total number of secondary follicles and mature follicles were significantly reduced after NaF exposure. Moreover, estradiol (E2) and follicle-stimulating hormone (FSH) levels in the females were significantly reduced in the 100 mg/L NaF exposure group. In males, the sperm viability and testosterone (T) were significantly decreased in the NaF exposure groups. Additionally, during steroidogenesis in ovaries and testes, fluoride remarkably decreased the expression levels of genes and proteins, including acute regulatory protein (StAR), 3β-hydroxysteroid dehydrogenase (3β-HSD), cytochrome P450 17a-hydroxylase (CYP17A1), and cholesterol side-chain cleavage enzyme (CYP11A1), while the mRNA levels of 17β-hydroxysteroid dehydrogenase (17β-HSD) decreased only in the testes. These results indicated that fluoride exposure disrupted the steroid hormone balance by changing several important steroidogenic-related genes associated with the development of the gonads, and damage the normal structure of the gonads in rat offspring.
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Affiliation(s)
- Wanpan Li
- Shanxi Key Laboratory of Ecological Animal Science and Environmental Veterinary Medicine, College of Veterinary Medicine, Shanxi Agricultural University, Taigu, 030801, Shanxi, China
| | - Zilong Sun
- Shanxi Key Laboratory of Ecological Animal Science and Environmental Veterinary Medicine, College of Veterinary Medicine, Shanxi Agricultural University, Taigu, 030801, Shanxi, China
| | - Meiyan Li
- Shanxi Key Laboratory of Ecological Animal Science and Environmental Veterinary Medicine, College of Veterinary Medicine, Shanxi Agricultural University, Taigu, 030801, Shanxi, China
| | - Baijuan Yue
- Shanxi Key Laboratory of Ecological Animal Science and Environmental Veterinary Medicine, College of Veterinary Medicine, Shanxi Agricultural University, Taigu, 030801, Shanxi, China
| | - Xuhua Zhang
- Shanxi Key Laboratory of Ecological Animal Science and Environmental Veterinary Medicine, College of Veterinary Medicine, Shanxi Agricultural University, Taigu, 030801, Shanxi, China
| | - Yangfei Zhao
- Shanxi Key Laboratory of Ecological Animal Science and Environmental Veterinary Medicine, College of Veterinary Medicine, Shanxi Agricultural University, Taigu, 030801, Shanxi, China
| | - Jundong Wang
- Shanxi Key Laboratory of Ecological Animal Science and Environmental Veterinary Medicine, College of Veterinary Medicine, Shanxi Agricultural University, Taigu, 030801, Shanxi, China.
- College of Veterinary Medicine, Shanxi Agricultural University, Jinzhong, 030801, Shanxi, China.
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19
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Wen C, Zhang Q, Xie F, Jiang J. Brick tea consumption and its relationship with fluorosis in Tibetan areas. Front Nutr 2022; 9:1030344. [PMID: 36583212 PMCID: PMC9792988 DOI: 10.3389/fnut.2022.1030344] [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: 08/28/2022] [Accepted: 11/28/2022] [Indexed: 12/14/2022] Open
Abstract
Brick tea-type fluorosis (BTF) due to a high intake of brick tea is possible in Tibetan populations, and dental fluorosis (DF) and skeletal fluorosis (SF) are its primary manifestations. To determine the prevalence of DF and SF and their relationships with brick tea intake in Tibetan populations, a literature review was conducted for studies published between 1994 and 2021. The available evidence revealed that brick tea may be produced from older stems and leaves of the tea plant and that the fluoride content of brick tea exceeds the national standard. The harsh environment of the plateau has led to limited food sources for the local Tibetan people who form the habit of drinking tea leaves as a satiation solution to digest greasy food and replenish vitamins, and regular consumption of brick tea leads to excessive exposure of Tibetan residents to fluoride. Studies in Tibet showed that the prevalence of DF in children was 14.06-75.93% in different districts, and the overall pooled prevalence of DF was 26.08%. The prevalence of SF in adults was 19.90-74.77% in different Tibetan districts, and the overall pooled prevalence of SF was 33.84%. The analysis of risk factors showed that the prevalence of BTF may be related to high-altitude and different working and living conditions, and BTF in children may be associated with fluoride intake during mothers' pregnancy and lactation. With the development of bioinformatics research, gene polymorphisms were suspected to be related to susceptibility to fluorosis in Tibetan populations. The study of BTF in Tibetan people needs to be further investigated and standardized, and additional studies evaluating the pathogenesis and preventive measures of BTF are warranted.
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Affiliation(s)
- Cai Wen
- Department of Oral Implantology, Affiliated Stomatological Hospital of Southwest Medical University, Luzhou, Sichuan, China,Department of VIP Dental Service, Affiliated Stomatological Hospital of Southwest Medical University, Luzhou, Sichuan, China,Luzhou Key Laboratory of Oral and Maxillofacial Reconstruction and Regeneration, Affiliated Stomatological Hospital of Southwest Medical University, Luzhou, Sichuan, China,*Correspondence: Cai Wen, ; orcid.org/0000-0002-3400-5382
| | - Qing Zhang
- Department of Nosocomial Infection Control, Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan, China
| | - Fei Xie
- Luzhou Key Laboratory of Oral and Maxillofacial Reconstruction and Regeneration, Affiliated Stomatological Hospital of Southwest Medical University, Luzhou, Sichuan, China,School of Stomatology, Southwest Medical University, Luzhou, Sichuan, China
| | - Jixin Jiang
- Luzhou Key Laboratory of Oral and Maxillofacial Reconstruction and Regeneration, Affiliated Stomatological Hospital of Southwest Medical University, Luzhou, Sichuan, China,School of Stomatology, Southwest Medical University, Luzhou, Sichuan, China
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20
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González-Casamada C, Nevarez-Rascón M, Nevarez-Rascón A, González-Galván M, Isiordia-Espinoza MA, Bologna-Molina R, Sánchez-Pérez L, Molina-Frechero N. Single Nucleotide Polymorphisms and Dental Fluorosis: A Systematic Review. Dent J (Basel) 2022; 10:211. [PMID: 36354656 PMCID: PMC9689045 DOI: 10.3390/dj10110211] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2022] [Revised: 10/29/2022] [Accepted: 11/01/2022] [Indexed: 12/01/2023] Open
Abstract
Genetic factors contribute to susceptibility and resistance to fluoride exposure. The aim of this systematic review was to identify alleles/genotypes of single nucleotide polymorphisms (SNPs) associated with dental fluorosis (DF) and to identify them as protective or risk factors. PubMed, ScienceDirect, Cochrane Library, Scopus and Web of Science were searched for articles; the last search was performed in August 2022. Human studies that analyzed the relationship between SNPs and DF published in English were included; systematic reviews and meta-analyses were excluded. Methodological quality was graded using the Joanna Briggs Institute checklist and risk of bias was assessed using the Cochrane Collaboration's tool. Eighteen articles were included, 44% of which showed high methodological quality and data from 5,625 participants aged 6 to 75 years were analyzed. The SNPs COL1A2, ESR2, DLX1, DLX2, AMBN, TUFT1, TFIP11, miRNA17, and SOD2 were considered risk factors, and ESR1, MMP20, and ENAM were considered protective factors. In conclusion, there are alleles and genotypes of different single nucleotide polymorphisms involved in increasing or decreasing the risk of developing dental fluorosis.
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Affiliation(s)
- Carlos González-Casamada
- Health Care Department, Autonomous Metropolitan University Xochimilco, Mexico City 04960, Mexico
| | | | | | | | - Mario Alberto Isiordia-Espinoza
- Institute of Research in Medical Sciences, Department of Clinics, Los Altos University Center, University of Guadalajara, Tepatitlan de Morelos 47650, Jalisco, Mexico
| | - Ronell Bologna-Molina
- Research Department, School of Dentistry, Juarez University of the Durango State, Durango 34000, Mexico
- Molecular Pathology Area, School of Dentistry, University of the Republic, Montevideo 11200, Uruguay
| | - Leonor Sánchez-Pérez
- Division of Biological and Health Sciences, Autonomous Metropolitan University Xochimilco, Mexico City 04960, Mexico
| | - Nelly Molina-Frechero
- Division of Biological and Health Sciences, Autonomous Metropolitan University Xochimilco, Mexico City 04960, Mexico
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21
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Chakraborty A, Pramanik S, Datta K, Goswami R, Saha D, Majumdar KK, Sikdar N. Possible Association Between Polymorphisms in ESR1, COL1A2, BGLAP, SPARC, VDR, and MMP2 Genes and Dental Fluorosis in a Population from an Endemic Region of West Bengal. Biol Trace Elem Res 2022; 200:4641-4653. [PMID: 35066749 DOI: 10.1007/s12011-021-03072-8] [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: 11/10/2021] [Accepted: 12/15/2021] [Indexed: 12/01/2022]
Abstract
Dental fluorosis (DF) is the most prevalent form of fluorosis in India affecting millions of people all over the country. As estrogen receptor 1 (ESR1), collagen type 1 alpha 2 (COL1A2), bone γ-carboxyglutamic acid protein (BGLAP), secreted protein acidic and cysteine-rich (SPARC), vitamin D receptor (VDR), and matrix metallopeptidase 2 (MMP2) genes play critical roles in bone metabolism, bone formation, mineral metabolism, and mineralization, variants in these genes could influence susceptibility to DF. The present study was aimed at evaluating the association between 15 single-nucleotide polymorphisms (SNPs) in the six candidate genes (namely, ESR1, COL1A2, BGLAP, SPARC, VDR, and MMP2) and DF among 132 individuals (case = 71 and control = 61) living in a fluoride endemic region of West Bengal, India. No statistically significant association with disease risk was found when the genotypes and allele frequencies of each of the 15 SNPs was analyzed individually using odd's ratio with 95% confidence interval. "CC" and "AG" haplotypes of the COL1A2 gene showed a borderline association with DF. The present study is the first in India to use multifactor dimensionality reduction (MDR) analysis for identifying gene-gene and gene-environment interactions in fluorosis. The biomarker of serum fluoride showed a significant association with the disease state among the 17 attributes (15 SNPs and 2 biomarkers of urine fluoride and serum fluoride) (P value = 0.011). The best model of MDR analysis with maximized testing accuracy involved two SNPs from the ESR1 gene (rs9340799 and rs2077647) and one SNP from BGLAP gene (rs1543294) (P value < 0.0001).
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Affiliation(s)
- Arijit Chakraborty
- Kolkata Zonal Centre, CSIR-National Environmental Engineering Research Institute, i-8 Sector-C, East Kolkata Township, Kolkata, 700107, India
| | - Sreemanta Pramanik
- Kolkata Zonal Centre, CSIR-National Environmental Engineering Research Institute, i-8 Sector-C, East Kolkata Township, Kolkata, 700107, India.
| | - Kallol Datta
- National Institute of Biomedical Genomics, P.O. N.S.S., Kalyani, 741251, West Bengal, India
| | - Rakesh Goswami
- Kolkata Zonal Centre, CSIR-National Environmental Engineering Research Institute, i-8 Sector-C, East Kolkata Township, Kolkata, 700107, India
| | - Depanwita Saha
- Kolkata Zonal Centre, CSIR-National Environmental Engineering Research Institute, i-8 Sector-C, East Kolkata Township, Kolkata, 700107, India
| | - Kunal Kanti Majumdar
- Department of Community Medicine, KPC Medical College and Hospital, 1F Raja S. C. Mullick Road, Jadavpur, Kolkata, 700032, India
| | - Nilabja Sikdar
- Human Genetics Unit, Indian Statistical Institute, 203 B. T. Road, Baranagar, Kolkata, 700108, India
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22
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García-Escobar TM, Valdivia-Gandur I, Astudillo-Rozas W, Aceituno-Antezana O, Yamadala B, Lozano de Luaces V, Chimenos-Küstner E, Manzanares-Céspedes MC. Moderate and Severe Dental Fluorosis in the Rural Population of Anantapur, India: Change in Their Biological Susceptibility? INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2022; 19:11293. [PMID: 36141562 PMCID: PMC9517481 DOI: 10.3390/ijerph191811293] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/10/2022] [Revised: 09/02/2022] [Accepted: 09/04/2022] [Indexed: 06/16/2023]
Abstract
Dental fluorosis affects the quality of life. A cross-sectional, observational study was conducted in a community affected by endemic fluorosis for several generations with a conserved biological and social environment. The study included patients from the rural population of Anantapur, India. The Dean index (DI) and the Thylstrup and Fejerskov Index (TFI) were used for fluorosis classification. Additionally, water samples were collected for fluoride analysis, taken from the patients' living areas. The statistical association between the variables was analyzed. In total, 785 patients between 10 and 60 years old were included in the study (58.7% women and 41.3% men). Fluorosis signs were found in 94.6% of patients examined using the DI and 94.4% using the TFI. Moderate-severe dental fluorosis was observed in 62.8% by DI and 73.1% by TFI consuming untreated water with up to 2.9 ppm of fluoride. Furthermore, moderate-severe dental fluorosis was observed in 33.2% by DI and 39.9% by TFI consuming water with ≤1.5 ppm of fluoride. The high prevalence of moderate-severe dental fluorosis in patients consuming water with a low fluoride concentration suggests that other factors are involved. Biological susceptibility change could play an essential role in the severity of dental fluorosis in populations exposed for several generations, affecting its actual and future quality of life.
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Affiliation(s)
- Trina Mylena García-Escobar
- Department of Odonto-Stomatology, Faculty of Medicine and Health Sciences, Universitat de Barcelona, 08007 Barcelona, Spain
| | | | - Wilson Astudillo-Rozas
- Biomedical Department, Universidad de Antofagasta, Antofagasta 1270300, Chile
- Dentistry Department, Universidad de Antofagasta, Antofagasta 1270300, Chile
- Biomedical Master of Science, Health Science Faculty, Universidad de Antofagasta, Antofagasta 1270300, Chile
| | - Oscar Aceituno-Antezana
- Biomedical Department, Universidad de Antofagasta, Antofagasta 1270300, Chile
- Dentistry Department, Universidad de Antofagasta, Antofagasta 1270300, Chile
- Biomedical Master of Science, Health Science Faculty, Universidad de Antofagasta, Antofagasta 1270300, Chile
| | | | - Vicente Lozano de Luaces
- Department of Odonto-Stomatology, Faculty of Medicine and Health Sciences, Universitat de Barcelona, 08007 Barcelona, Spain
- Rural Development Trust, Vicente Ferrer Foundation, 08029 Barcelona, Spain
| | - Eduardo Chimenos-Küstner
- Department of Odonto-Stomatology, Faculty of Medicine and Health Sciences, Universitat de Barcelona, 08007 Barcelona, Spain
| | - María Cristina Manzanares-Céspedes
- Human Anatomy and Embryology Unit, Faculty of Medicine and Health Sciences, Universitat de Barcelona, 08007 Barcelona, Spain
- UNIPRO—Unidade de Investigação em Patologia e Reabilitação Oral, Instituto Universitário de Ciências da Saúde (IUCS), CESPU, 4585-116 Gandra, Portugal
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23
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Collins MT, Marcucci G, Anders HJ, Beltrami G, Cauley JA, Ebeling PR, Kumar R, Linglart A, Sangiorgi L, Towler DA, Weston R, Whyte MP, Brandi ML, Clarke B, Thakker RV. Skeletal and extraskeletal disorders of biomineralization. Nat Rev Endocrinol 2022; 18:473-489. [PMID: 35578027 DOI: 10.1038/s41574-022-00682-7] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 04/13/2022] [Indexed: 12/15/2022]
Abstract
The physiological process of biomineralization is complex and deviation from it leads to a variety of diseases. Progress in the past 10 years has enhanced understanding of the genetic, molecular and cellular pathophysiology underlying these disorders; sometimes, this knowledge has both facilitated restoration of health and clarified the very nature of biomineralization as it occurs in humans. In this Review, we consider the principal regulators of mineralization and crystallization, and how dysregulation of these processes can lead to human disease. The knowledge acquired to date and gaps still to be filled are highlighted. The disorders of mineralization discussed comprise a broad spectrum of conditions that encompass bone disorders associated with alterations of mineral quantity and quality, as well as disorders of extraskeletal mineralization (hyperphosphataemic familial tumoural calcinosis). Included are disorders of alkaline phosphatase (hypophosphatasia) and phosphate homeostasis (X-linked hypophosphataemic rickets, fluorosis, rickets and osteomalacia). Furthermore, crystallopathies are covered as well as arterial and renal calcification. This Review discusses the current knowledge of biomineralization derived from basic and clinical research and points to future studies that will lead to new therapeutic approaches for biomineralization disorders.
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Affiliation(s)
- Michael T Collins
- Skeletal Disorders and Mineral Homeostasis Section, National Institute of Dental and Craniofacial Research, NIH, Bethesda, MD, USA.
| | - Gemma Marcucci
- Bone Metabolic Diseases Unit, Department of Biomedical, Experimental and Clinical Sciences, University of Florence, Florence, Italy
| | - Hans-Joachim Anders
- Department of Medicine IV, Hospital of the University of Munich, Ludwig-Maximilians University, Munich, Germany
| | - Giovanni Beltrami
- Department Paediatric Orthopedic Oncology, Careggi and Meyer Children Hospital, Florence, Italy
| | - Jane A Cauley
- Department of Epidemiology, Graduate School of Public Health, University of Pittsburgh, Pittsburgh, PA, USA
| | - Peter R Ebeling
- Department of Medicine, School of Clinical Sciences, Monash University, Melbourne, Australia
| | - Rajiv Kumar
- Departments of Medicine, Biochemistry and Molecular Biology, Mayo Clinic, Rochester, MN, USA
| | - Agnès Linglart
- APHP, Endocrinologie et diabète de l'enfant, Paris, France
| | - Luca Sangiorgi
- Medical Genetics and Skeletal Rare Diseases, IRCCS Istituto Ortopedico Rizzoli, Bologna, Italy
| | - Dwight A Towler
- University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Ria Weston
- Cardiovascular Research Group, Manchester Metropolitan University, Manchester, UK
| | - Michael P Whyte
- Center for Metabolic Bone Disease and Molecular Research, Shriners Hospitals for Children-St Louis, St Louis, MO, USA
- Division of Bone and Mineral Diseases, Department of Internal Medicine, Washington University School of Medicine, St Louis, MO, USA
| | | | - Bart Clarke
- Mayo Clinic Division of Endocrinology, Diabetes, Metabolism, and Nutrition, Rochester, MN, USA
| | - Rajesh V Thakker
- Academic Endocrine Unit, Radcliffe Department of Medicine, University of Oxford, Oxford, UK
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24
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Vagner VD, Sarf EA, Belskaya LV, Korshunov AS, Kuryatnikov KN, Bondar AA, Meloyan AD, Maksimenko KA, Kasiy MN. Prognostic significance of oral fluid fluoride measurement in acute pericoronitis. BULLETIN OF RUSSIAN STATE MEDICAL UNIVERSITY 2022. [DOI: 10.24075/brsmu.2022.042] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Oral fluid is a valuable substrate for assessing dental health and other aspects of physical status. New methods for early diagnosis and prognosis of dental diseases on the basis of oral fluid composition are in constant demand. Excessive fluoride concentrations, often oversighted by dental therapists, negatively affect organs and tissues of the oral cavity. This study aimed at development and approbation of a method for reliable measurement of fluoride ions in oral fluid by capillary electrophoresis to be used in patients with dental diseases. The fluoride ion concentrations were measured in health (2.16 ± 0.48 mg/L), in isolated acute pericoronitis (15.2 ± 2.7 mg/L) and in acute pericoronitis combined to multiple caries (18.9 ± 4.2 mg/L). By post-operative day 3, fluoride levels in the group with isolated acute pericoronitis dropped to normal values (2.28 ± 0.52 mg/L), whereas in the group with acute pericoronitis combined to multiple caries fluoride levels remained high (8.7 ± 1.9 mg/L; р < 0.0001). The developed protocol is efficient for studying fluoride ion concentrations in isolated and combined dental diseases.
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Affiliation(s)
- VD Vagner
- Central Research Institute of Dentistry and Maxillofacial Surgery, Moscow, Russia
| | - EA Sarf
- Omsk State Pedagogical University, Omsk, Russia
| | - LV Belskaya
- Omsk State Pedagogical University, Omsk, Russia
| | | | | | - AA Bondar
- Omsk State Medical University, Omsk, Russia
| | - AD Meloyan
- Omsk State Medical University, Omsk, Russia
| | | | - MN Kasiy
- Omsk State Medical University, Omsk, Russia
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Lou Q, Guo N, Huang W, Wu L, Su M, Liu Y, Liu X, Li B, Yang Y, Gao Y. Association between Bone Morphogenetic Protein 2 Gene Polymorphisms and Skeletal Fluorosis of The Brick-tea Type Fluorosis in Tibetans and Kazakhs, China. INTERNATIONAL JOURNAL OF ENVIRONMENTAL HEALTH RESEARCH 2022; 32:1489-1499. [PMID: 33660557 DOI: 10.1080/09603123.2021.1892037] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/02/2020] [Accepted: 02/15/2021] [Indexed: 06/12/2023]
Abstract
To investigate the potential association between BMP2 single nucleotide polymorphisms (SNPs) and brick-tea-type skeletal fluorosis risk in cross-sectional case-control study conducted in Sinkiang and Qinghai, China, a total of 598 individuals, including 308 Tibetans and 290 Kazakhs, were enrolled. Using the standard WS/192-2008 (China), 221 skeletal fluorosis cases were diagnosed, including 123 Tibetans and 98 Kazakhs. Logistic regressions 2 analysis did not find the association between SNPs (Rs235764, Rs235739 and Rs996544) and skeletal fluorosis. Genetic models, linkage disequilibrium (LD) and haplotype analysis were not found to be associated with risk of skeletal fluorosis after adjustment by age and sex (P>0.05).Our data suggested that Rs 235764, Rs 235739 and Rs 996544 were not linked susceptibility for skeletal fluorosis in our cross-sectional case-control study.
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Affiliation(s)
- Qun Lou
- Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin, China
- Key Lab of Etiology and Epidemiology, Education Bureau of Heilongjiang Province & Ministry of Health (23618504), Harbin Medical University, Harbin, China
- Heilongjiang Provincial Key Lab of Trace Elements and Human Health Harbin Medical University, Harbin, China
| | - Ning Guo
- Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin, China
- Key Lab of Etiology and Epidemiology, Education Bureau of Heilongjiang Province & Ministry of Health (23618504), Harbin Medical University, Harbin, China
- Heilongjiang Provincial Key Lab of Trace Elements and Human Health Harbin Medical University, Harbin, China
| | - Wei Huang
- Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin, China
- Key Lab of Etiology and Epidemiology, Education Bureau of Heilongjiang Province & Ministry of Health (23618504), Harbin Medical University, Harbin, China
- Heilongjiang Provincial Key Lab of Trace Elements and Human Health Harbin Medical University, Harbin, China
| | - Liaowei Wu
- Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin, China
- Key Lab of Etiology and Epidemiology, Education Bureau of Heilongjiang Province & Ministry of Health (23618504), Harbin Medical University, Harbin, China
- Heilongjiang Provincial Key Lab of Trace Elements and Human Health Harbin Medical University, Harbin, China
| | - Mengyao Su
- Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin, China
- Key Lab of Etiology and Epidemiology, Education Bureau of Heilongjiang Province & Ministry of Health (23618504), Harbin Medical University, Harbin, China
- Heilongjiang Provincial Key Lab of Trace Elements and Human Health Harbin Medical University, Harbin, China
| | - Yang Liu
- Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin, China
- Key Lab of Etiology and Epidemiology, Education Bureau of Heilongjiang Province & Ministry of Health (23618504), Harbin Medical University, Harbin, China
- Heilongjiang Provincial Key Lab of Trace Elements and Human Health Harbin Medical University, Harbin, China
| | - Xiaona Liu
- Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin, China
- Key Lab of Etiology and Epidemiology, Education Bureau of Heilongjiang Province & Ministry of Health (23618504), Harbin Medical University, Harbin, China
- Heilongjiang Provincial Key Lab of Trace Elements and Human Health Harbin Medical University, Harbin, China
| | - Bingyun Li
- Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin, China
- Key Lab of Etiology and Epidemiology, Education Bureau of Heilongjiang Province & Ministry of Health (23618504), Harbin Medical University, Harbin, China
- Heilongjiang Provincial Key Lab of Trace Elements and Human Health Harbin Medical University, Harbin, China
| | - Yanmei Yang
- Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin, China
- Key Lab of Etiology and Epidemiology, Education Bureau of Heilongjiang Province & Ministry of Health (23618504), Harbin Medical University, Harbin, China
- Heilongjiang Provincial Key Lab of Trace Elements and Human Health Harbin Medical University, Harbin, China
| | - Yanhui Gao
- Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin, China
- Key Lab of Etiology and Epidemiology, Education Bureau of Heilongjiang Province & Ministry of Health (23618504), Harbin Medical University, Harbin, China
- Heilongjiang Provincial Key Lab of Trace Elements and Human Health Harbin Medical University, Harbin, China
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Du C, Xiao P, Gao S, Chen S, Chen B, Huang W, Zhao C. High Fluoride Ingestion Impairs Bone Fracture Healing by Attenuating M2 Macrophage Differentiation. Front Bioeng Biotechnol 2022; 10:791433. [PMID: 35669059 PMCID: PMC9164140 DOI: 10.3389/fbioe.2022.791433] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2021] [Accepted: 04/20/2022] [Indexed: 11/23/2022] Open
Abstract
Fluorosis is still endemic in at least 25 countries around the world. In this study, we investigated the effect of high fluoride intake on fracture healing. Our in vitro experiments found that fluoride inhibited the osteogenic and angiogenic differentiation of MSCs in a dose-dependent manner. By constructing a bone fracture model, we found that high fluoride intake influences bone fracture by attenuating endochondral ossification and angiogenesis. In the mechanism, we clarified that high fluoride inhibits M2 differentiation rather than M1 differentiation in the fracture area, which may contribute to the delayed healing of the fracture. These findings provide an essential reference for the clinical treatment of bone fracture patients with a history of high fluoride intake or skeletal fluorosis patients.
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Affiliation(s)
| | | | | | | | | | - Wei Huang
- *Correspondence: Wei Huang, ; Chen Zhao,
| | - Chen Zhao
- *Correspondence: Wei Huang, ; Chen Zhao,
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Li R, Gong Z, Yu Y, Niu R, Bian S, Sun Z. Alleviative Effects of Exercise on Bone Remodeling in Fluorosis Mice. Biol Trace Elem Res 2022; 200:1248-1261. [PMID: 33939130 DOI: 10.1007/s12011-021-02741-y] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/16/2021] [Accepted: 04/26/2021] [Indexed: 12/15/2022]
Abstract
Fluorine is widely present in nature in the form of fluoride. Prolonged high-dose fluoride exposure can cause skeletal fluorosis, resulting in osteosclerosis, osteoporosis or osteomalacia. It has been proved that exercise is one of the important factors affecting the health of the bone and promoting bone formation. To investigate the effects of exercise on bone remodeling in fluorosis mice, 120 male 3-week-old ICR mice were randomly divided into four groups: control group (C), exercise group (E), fluoride group (F), fluoride plus exercise group (F + E). After 8-week physical exercise and/or fluoride exposure, we evaluated the content of fluorine, the histopathological structure and microstructure of femur, bone metabolism biochemical indexes and oxidative stress related parameters, and the mRNA and protein levels of genes in BMP-2/Smads and OPG/RANKL/RANK signaling pathways. Our results showed that 100 mg/L NaF exposure increased the accumulation of fluoride in bone, altered histology of bone, and enhanced the activities of ALP and TRACP. Meanwhile, excessive fluoride induced oxidative stress in bone tissue by increasing the content of ROS and MDA, and decreasing the activities of antioxidant enzymes. In addition, the results of qRT-PCR suggested that NaF significantly increased the mRNA expression of BMP-2, Smad-5, Col IA1, Col IA2, OPG, RANKL and RANK, as well as the elevated proteins of OPG, RANKL and RANK. However, these fluoride-induced changes were alleviated after moderate exercise. Taken together, these findings indicated that moderate exercise decreased the toxicity of fluoride by reducing the accumulation of fluorine in the body to relieve the bone damage caused by fluorosis.
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Affiliation(s)
- Rui Li
- Shanxi Key Laboratory of Ecological Animal Science and Environmental Veterinary Medicine, College of Veterinary Medicine, Shanxi Agricultural University, 030801, Taigu, Shanxi, China
| | - Zeen Gong
- Shanxi Key Laboratory of Ecological Animal Science and Environmental Veterinary Medicine, College of Veterinary Medicine, Shanxi Agricultural University, 030801, Taigu, Shanxi, China
| | - Yanghuan Yu
- Shanxi Key Laboratory of Ecological Animal Science and Environmental Veterinary Medicine, College of Veterinary Medicine, Shanxi Agricultural University, 030801, Taigu, Shanxi, China
| | - Ruiyan Niu
- Shanxi Key Laboratory of Ecological Animal Science and Environmental Veterinary Medicine, College of Veterinary Medicine, Shanxi Agricultural University, 030801, Taigu, Shanxi, China
| | - Shengtai Bian
- School of Sport Science, Beijing Sport University, Beijing, China
| | - Zilong Sun
- Shanxi Key Laboratory of Ecological Animal Science and Environmental Veterinary Medicine, College of Veterinary Medicine, Shanxi Agricultural University, 030801, Taigu, Shanxi, China.
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Zhu SQ, Liu J, Han B, Zhao WP, Zhou BH, Zhao J, Wang HW. Fluoride exposure cause colon microbiota dysbiosis by destroyed microenvironment and disturbed antimicrobial peptides expression in colon. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2022; 292:118381. [PMID: 34673156 DOI: 10.1016/j.envpol.2021.118381] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/27/2021] [Revised: 10/14/2021] [Accepted: 10/15/2021] [Indexed: 06/13/2023]
Abstract
Colon microenvironment and microbiota dysbiosis are closely related to various human metabolic diseases. In this study, a total of 72 healthy female mice were exposed to fluoride (F) (0, 25, 50 and 100 mg/L F-) in drinking water for 70 days. The effect of F on intestinal barrier and the diversity and composition in colon microbiota have been evaluated. Meanwhile, the relationship among F-induced colon microbiota alterations and antimicrobial peptides (AMPs) expression and short-chain fatty acids (SCFAs) level also been assessed. The results suggested that F decreased the goblet cells number and glycoprotein expression in colon. And further high-throughput 16S rRNA gene sequencing result demonstrated that F exposure induced the diversity and community composition of colonic microbiota significantly changes. Linear Discriminant Analysis Effect Size (LEfSe) analysis identified 11 predominantly characteristic taxa which may be the biomarker in response to F exposure. F-induced intestinal microbiota perturbations lead to the significantly decreased SCFAs levels in colon. Immunofluorescence results showed that F increased the protein expression of interleukin-17A (IL-17A) and IL-22 (P < 0.01) and disturbed the expression of interleukin-17 receptor A (IL-17RA) and IL-22R (P < 0.05 or P < 0.01). In addition, the increased expression of IL-17A and IL-22 cooperatively enhanced the mRNA expression of AMPs which response to F-induced microbiota perturbations. Collectively, destroyed microenvironment and disturbed AMPs are the primary reason of microbiota dysbiosis in colon after F exposure. Colonic homoeostasis imbalance would be helpful for finding the source of F-induced chronic systemic diseases.
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Affiliation(s)
- Shi-Quan Zhu
- Henan Key Laboratory of Environmental and Animal Product Safety, Henan University of Science and Technology, Luoyang, 471000, Henan, People's Republic of China.
| | - Jing Liu
- Henan Key Laboratory of Environmental and Animal Product Safety, Henan University of Science and Technology, Luoyang, 471000, Henan, People's Republic of China.
| | - Bo Han
- Department of Clinical Veterinary Medicine, College of Veterinary Medicine, China Agricultural University, Beijing, 100193, People's Republic of China.
| | - Wen-Peng Zhao
- Department of Clinical Veterinary Medicine, College of Veterinary Medicine, China Agricultural University, Beijing, 100193, 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.
| | - 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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Yu FF, Zuo J, Fu X, Gao MH, Sun L, Yu SY, Li Z, Zhou GY, Ba Y. Role of the hippo signaling pathway in the extracellular matrix degradation of chondrocytes induced by fluoride exposure. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2021; 225:112796. [PMID: 34555722 DOI: 10.1016/j.ecoenv.2021.112796] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/30/2021] [Revised: 09/02/2021] [Accepted: 09/15/2021] [Indexed: 06/13/2023]
Abstract
To identify the role of the Hippo signaling pathway in the extracellular matrix degradation of chondrocytes induced by fluoride exposure. Environmental response genes (ERGs) of bone injury induced by fluoride exposure were obtained from the Comparative Toxicogenomics Database, and annotated by STRING for KEGG pathway enrichment analysis. The CCK-8 kit was used to measure the proliferation of ATDC5 cells. The malondialdehyde (MDA), total antioxidant capacity (T-AOC), total superoxide dismutase (T-SOD), and glutathione peroxidase (GSH-PX) levels in ATDC5 cells were measured using oxidative stress detection kit. Western blot analysis was used to measure the p-MST1/2, p-LATS1/2, and p-YAP/YAP1 expression levels in the Hippo pathway and the COL2A1, ACAN and MMP13 expression levels in the cartilage matrix. Localizations of YAP1 and COL2A1 proteins in chondrocytes were performed using cell immunofluorescence. Continuous data from the multiple groups were compared using one-way analysis of variance, and then the differences between groups were tested with Dunnett's t-test, with the test level α = 0.05. The 145 ERGs of bone injury induced by fluoride exposure were identified, and KEGG enrichment analysis revealed Hippo signaling pathways significantly related to bone injury. A CCK-8 assay revealed that the viability of the ATDC5 cells was significantly decreased with increased fluorine concentration. The MDA content in 20 mg/L sodium fluoride (NaF) exposure group was significantly higher than that in the control group, the T-SOD, T-AOC and GSH-PX activities in 15 and 20 mg/L NaF exposure groups were significantly lower than those in the control group (P < 0.05). Western blot results showed the protein levels of p-MST1/2, p-LATS1/2 and p-YAP1 in 15 and 20 mg/L NaF exposure groups were significantly lower than those in the control group, while the YAP1 protein level in 20 mg/L NaF group was significantly higher than that in the control group. The COL2A1 and ACAN proteins in 20 mg/L NaF group were significantly decreased, while the MMP13 protein level in 15 and 20 mg/L NaF groups were significantly increased (P < 0.05). It was observed that the expression of YAP1 protein expression level in the cytoplasm decreased with the increased fluoride exposure, whereas that the expression level of YAP1 protein in the nucleus increased. Fluoride inhibited the proliferation of ATDC5 cells, induced oxidative stress, inhibited the activity of the Hippo pathway, and eventually led to cartilage matrix degradation.
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Affiliation(s)
- Fang-Fang Yu
- Department of Environmental Health, School of Public Health, Zhengzhou University, Environment and Health Innovation Team, Zhengzhou, Henan 450001, PR China.
| | - Juan Zuo
- Department of Environmental Health, School of Public Health, Zhengzhou University, Environment and Health Innovation Team, Zhengzhou, Henan 450001, PR China.
| | - Xiaoli Fu
- School of Public Health, Zhengzhou University, Zhengzhou, Henan 450001, PR China.
| | - Ming-Hui Gao
- Department of Environmental Health, School of Public Health, Zhengzhou University, Environment and Health Innovation Team, Zhengzhou, Henan 450001, PR China.
| | - Lei Sun
- Department of Environmental Health, School of Public Health, Zhengzhou University, Environment and Health Innovation Team, Zhengzhou, Henan 450001, PR China.
| | - Shui-Yuan Yu
- Department of Environmental Health, School of Public Health, Zhengzhou University, Environment and Health Innovation Team, Zhengzhou, Henan 450001, PR China.
| | - Zhiyuan Li
- School of Public Health, Zhengzhou University, Zhengzhou, Henan 450001, PR China.
| | - Guo-Yu Zhou
- Department of Environmental Health, School of Public Health, Zhengzhou University, Environment and Health Innovation Team, Zhengzhou, Henan 450001, PR China.
| | - Yue Ba
- Department of Environmental Health, School of Public Health, Zhengzhou University, Environment and Health Innovation Team, Zhengzhou, Henan 450001, PR China.
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Diagnosis of Dental Fluorosis Using Micro-Raman Spectroscopy Applying a Principal Component-Linear Discriminant Analysis. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2021; 18:ijerph182010572. [PMID: 34682316 PMCID: PMC8535615 DOI: 10.3390/ijerph182010572] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/15/2021] [Revised: 10/06/2021] [Accepted: 10/07/2021] [Indexed: 12/11/2022]
Abstract
Dental fluorosis is an irreversible condition caused by excessive fluoride consumption during tooth formation and is considered a public health problem in several world regions. The objective of this study was to evaluate the capability of micro-Raman spectroscopy to classify teeth of different fluorosis severities, applying principal component analysis and linear discriminant analysis (PCA-LDA), and estimate the model cross-validation accuracy. Forty teeth of different fluorosis severities and a control group were analyzed. Ten spectra were captured from each tooth and a total of 400 micro-Raman spectra were acquired in the wavenumber range of 250 to 1200 cm−1, including the bands corresponding to stretching and bending internal vibrational modes ν1, ν2, ν3, and ν4 (PO43−). From the analysis of the micro-Raman spectra an increase in B-type carbonate ion substitution into the phosphate site of the hydroxyapatite as fluorosis severity increases was identified. The PCA-LDA model showed a sensitivity and specificity higher than 94% and 93% for the different fluorosis severity groups, respectively. The cross-validation accuracy was higher than 90%. Micro-Raman spectroscopy combined with PCA-LDA provides an adequate tool for the diagnosis of fluorosis severity. This is a non-invasive and non-destructive technique with promising applications in clinical and epidemiological fields.
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Li Q, Shen J, Qin T, Zhou G, Li Y, Chen Z, Li M. A Qualitative and Comprehensive Analysis of Caries Susceptibility for Dental Fluorosis Patients. Antibiotics (Basel) 2021; 10:antibiotics10091047. [PMID: 34572628 PMCID: PMC8464924 DOI: 10.3390/antibiotics10091047] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2021] [Revised: 08/25/2021] [Accepted: 08/25/2021] [Indexed: 12/04/2022] Open
Abstract
Dental fluorosis (DF) is an endemic disease caused by excessive fluoride exposure during childhood. Previous studies mainly focused on the acid resistance of fluorotic enamel and failed to reach a consensus on the topic of the caries susceptibility of DF patients. In this review, we discuss the role of DF classification in assessing this susceptibility and follow the “four factors theory” in weighing the pros and cons of DF classification in terms of host factor (dental enamel and saliva), food factor, bacteria factor, and DF treatment factor. From our analysis, we find that susceptibility is possibly determined by various factors such as the extent of structural and chemical changes in fluorotic enamel, eating habits, fluoride levels in diets and in the oral cavity, changes in quantity and quality of saliva, and/or oral hygiene. Thus, a universal conclusion regarding caries susceptibility might not exist, instead depending on each individual’s situation.
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Affiliation(s)
- Qianrui Li
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China School of Stomatology, Sichuan University, Chengdu 610041, China; (Q.L.); (J.S.); (T.Q.); (G.Z.); (Y.L.)
| | - Jiaqi Shen
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China School of Stomatology, Sichuan University, Chengdu 610041, China; (Q.L.); (J.S.); (T.Q.); (G.Z.); (Y.L.)
| | - Tao Qin
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China School of Stomatology, Sichuan University, Chengdu 610041, China; (Q.L.); (J.S.); (T.Q.); (G.Z.); (Y.L.)
| | - Ge Zhou
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China School of Stomatology, Sichuan University, Chengdu 610041, China; (Q.L.); (J.S.); (T.Q.); (G.Z.); (Y.L.)
| | - Yifeng Li
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China School of Stomatology, Sichuan University, Chengdu 610041, China; (Q.L.); (J.S.); (T.Q.); (G.Z.); (Y.L.)
| | - Zhu Chen
- Key Laboratory of Oral Disease Research, School of Stomatology, Zunyi Medical University, Zunyi 563000, China;
| | - Mingyun Li
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China School of Stomatology, Sichuan University, Chengdu 610041, China; (Q.L.); (J.S.); (T.Q.); (G.Z.); (Y.L.)
- Correspondence:
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Evaluation of Fluoride Adsorption Mechanism and Capacity of Different Types of Bone Char. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2021; 18:ijerph18136878. [PMID: 34206972 PMCID: PMC8297328 DOI: 10.3390/ijerph18136878] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/27/2021] [Revised: 06/22/2021] [Accepted: 06/24/2021] [Indexed: 12/07/2022]
Abstract
The fluoride adsorption capacity of three types of bone char (BC), including cow BC (CBC), chicken BC (CKBC), and pig BC (PBC), was examined. At the optimum charring conditions (temperature and time), PBC had the highest hydroxyapatite (HAP) content (0.928 g-HAP/g-BC), while CBC had the highest specific surface area (103.11 m2/g-BC). CBC also had the maximum fluoride adsorption capacity (0.788 mg-F/g-HAP), suggesting that fluoride adsorption capacity depends more on the specific surface area of the BC than the HAP content. The adsorption data of CBC, CKBC, and PBC fit well with the pseudo-second-order model and the Langmuir isotherm. The maximum fluoride adsorption capacity of BC reached the maximum value when the solution had a pH of approximately 6.0. Lastly, the highest fluoride desorption occurred when the BCs were soaked in solutions with a pH higher than 11.0.
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Chu Y, Liu Y, Guo N, Lou Q, Wang L, Huang W, Wu L, Wang J, Zhang M, Yin F, Gao Y, Yang Y. Association between ALOX15 gene polymorphism and brick-tea type skeletal fluorosis in Tibetans, Kazaks and Han, China. INTERNATIONAL JOURNAL OF ENVIRONMENTAL HEALTH RESEARCH 2021; 31:421-432. [PMID: 31565963 DOI: 10.1080/09603123.2019.1666972] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/12/2019] [Accepted: 09/06/2019] [Indexed: 06/10/2023]
Abstract
To evaluate the association between ALOX15 gene polymorphism and skeletal fluorosis (SF), a case-control study was conducted. A total of 1023 individuals, including 308 Tibetans, 290 Kazaks and 425 Han, were enrolled in this study, in which cases and controls were 278 and 745, respectively. SF was diagnosed by X-ray absorptiometry. SNPs were genotyped using the Sequenom Mass ARRAY system. The genotypes of ALOX15 rs7220870, rs2664593 and rs1107852 were not associated with the risk of SF. After reconstructing the haplotype of rs7220870 and rs11078528, the risk effect of haplotype CA was found in Han participants aged ≤45 years or with moderate fluoride intake. Diplotype of CC/CC had a protective effect on SF risk in Han participants; whereas, CA/CC diplotype showed a risk effect on SF risk in participants aged ≥65; Our results provide the first evidence of an association between ALOX15 gene polymorphism and SF risk in Han participants.Abbreviation: SF: Skeletal fluorosis; SNP: Single Nucleotide polymorphism.
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Affiliation(s)
- Yanru Chu
- Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin, Heilongjiang Province, China
- Key Lab of Etiology and Epidemiology, Education Bureau of Heilongjiang Province & Ministry of Health (23618504), Harbin Medical University, Harbin, Heilongjiang Province, China
- Heilongjiang Provincial Key Lab of Trace Elements and Human Health, Harbin Medical University, Harbin, Heilongjiang, China
| | - Yang Liu
- Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin, Heilongjiang Province, China
- Key Lab of Etiology and Epidemiology, Education Bureau of Heilongjiang Province & Ministry of Health (23618504), Harbin Medical University, Harbin, Heilongjiang Province, China
- Heilongjiang Provincial Key Lab of Trace Elements and Human Health, Harbin Medical University, Harbin, Heilongjiang, China
| | - Ning Guo
- Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin, Heilongjiang Province, China
- Key Lab of Etiology and Epidemiology, Education Bureau of Heilongjiang Province & Ministry of Health (23618504), Harbin Medical University, Harbin, Heilongjiang Province, China
- Heilongjiang Provincial Key Lab of Trace Elements and Human Health, Harbin Medical University, Harbin, Heilongjiang, China
| | - Qun Lou
- Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin, Heilongjiang Province, China
- Key Lab of Etiology and Epidemiology, Education Bureau of Heilongjiang Province & Ministry of Health (23618504), Harbin Medical University, Harbin, Heilongjiang Province, China
- Heilongjiang Provincial Key Lab of Trace Elements and Human Health, Harbin Medical University, Harbin, Heilongjiang, China
| | - Limei Wang
- Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin, Heilongjiang Province, China
- Key Lab of Etiology and Epidemiology, Education Bureau of Heilongjiang Province & Ministry of Health (23618504), Harbin Medical University, Harbin, Heilongjiang Province, China
- Heilongjiang Provincial Key Lab of Trace Elements and Human Health, Harbin Medical University, Harbin, Heilongjiang, China
| | - Wei Huang
- Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin, Heilongjiang Province, China
- Key Lab of Etiology and Epidemiology, Education Bureau of Heilongjiang Province & Ministry of Health (23618504), Harbin Medical University, Harbin, Heilongjiang Province, China
- Heilongjiang Provincial Key Lab of Trace Elements and Human Health, Harbin Medical University, Harbin, Heilongjiang, China
| | - Liaowei Wu
- Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin, Heilongjiang Province, China
- Key Lab of Etiology and Epidemiology, Education Bureau of Heilongjiang Province & Ministry of Health (23618504), Harbin Medical University, Harbin, Heilongjiang Province, China
- Heilongjiang Provincial Key Lab of Trace Elements and Human Health, Harbin Medical University, Harbin, Heilongjiang, China
| | - Jian Wang
- Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin, Heilongjiang Province, China
- Key Lab of Etiology and Epidemiology, Education Bureau of Heilongjiang Province & Ministry of Health (23618504), Harbin Medical University, Harbin, Heilongjiang Province, China
- Heilongjiang Provincial Key Lab of Trace Elements and Human Health, Harbin Medical University, Harbin, Heilongjiang, China
| | - Meichen Zhang
- Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin, Heilongjiang Province, China
- Key Lab of Etiology and Epidemiology, Education Bureau of Heilongjiang Province & Ministry of Health (23618504), Harbin Medical University, Harbin, Heilongjiang Province, China
- Heilongjiang Provincial Key Lab of Trace Elements and Human Health, Harbin Medical University, Harbin, Heilongjiang, China
| | - Fanshuo Yin
- Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin, Heilongjiang Province, China
- Key Lab of Etiology and Epidemiology, Education Bureau of Heilongjiang Province & Ministry of Health (23618504), Harbin Medical University, Harbin, Heilongjiang Province, China
- Heilongjiang Provincial Key Lab of Trace Elements and Human Health, Harbin Medical University, Harbin, Heilongjiang, China
| | - Yanhui Gao
- Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin, Heilongjiang Province, China
- Key Lab of Etiology and Epidemiology, Education Bureau of Heilongjiang Province & Ministry of Health (23618504), Harbin Medical University, Harbin, Heilongjiang Province, China
- Heilongjiang Provincial Key Lab of Trace Elements and Human Health, Harbin Medical University, Harbin, Heilongjiang, China
| | - Yanmei Yang
- Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin, Heilongjiang Province, China
- Key Lab of Etiology and Epidemiology, Education Bureau of Heilongjiang Province & Ministry of Health (23618504), Harbin Medical University, Harbin, Heilongjiang Province, China
- Heilongjiang Provincial Key Lab of Trace Elements and Human Health, Harbin Medical University, Harbin, Heilongjiang, China
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Han J, Kiss L, Mei H, Remete AM, Ponikvar-Svet M, Sedgwick DM, Roman R, Fustero S, Moriwaki H, Soloshonok VA. Chemical Aspects of Human and Environmental Overload with Fluorine. Chem Rev 2021; 121:4678-4742. [PMID: 33723999 PMCID: PMC8945431 DOI: 10.1021/acs.chemrev.0c01263] [Citation(s) in RCA: 131] [Impact Index Per Article: 43.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2020] [Indexed: 12/24/2022]
Abstract
Over the last 100-120 years, due to the ever-increasing importance of fluorine-containing compounds in modern technology and daily life, the explosive development of the fluorochemical industry led to an enormous increase of emission of fluoride ions into the biosphere. This made it more and more important to understand the biological activities, metabolism, degradation, and possible environmental hazards of such substances. This comprehensive and critical review focuses on the effects of fluoride ions and organofluorine compounds (mainly pharmaceuticals and agrochemicals) on human health and the environment. To give a better overview, various connected topics are also discussed: reasons and trends of the advance of fluorine-containing pharmaceuticals and agrochemicals, metabolism of fluorinated drugs, withdrawn fluorinated drugs, natural sources of organic and inorganic fluorine compounds in the environment (including the biosphere), sources of fluoride intake, and finally biomarkers of fluoride exposure.
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Affiliation(s)
- Jianlin Han
- Jiangsu
Co-Innovation Center of Efficient Processing and Utilization of Forest
Resources, College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China
| | - Loránd Kiss
- University
of Szeged, Institute of Pharmaceutical Chemistry
and Interdisciplinary Excellence Centre, Eötvös u. 6, 6720 Szeged, Hungary
| | - Haibo Mei
- Jiangsu
Co-Innovation Center of Efficient Processing and Utilization of Forest
Resources, College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China
| | - Attila Márió Remete
- University
of Szeged, Institute of Pharmaceutical Chemistry
and Interdisciplinary Excellence Centre, Eötvös u. 6, 6720 Szeged, Hungary
| | - Maja Ponikvar-Svet
- Department
of Inorganic Chemistry and Technology, Jožef
Stefan Institute, Jamova
cesta 39, 1000 Ljubljana, Slovenia
| | - Daniel Mark Sedgwick
- Departamento
de Química Orgánica, Universidad
de Valencia, 46100 Burjassot, Valencia Spain
| | - Raquel Roman
- Departamento
de Química Orgánica, Universidad
de Valencia, 46100 Burjassot, Valencia Spain
| | - Santos Fustero
- Departamento
de Química Orgánica, Universidad
de Valencia, 46100 Burjassot, Valencia Spain
| | - Hiroki Moriwaki
- Hamari
Chemicals Ltd., 1-19-40, Nankokita, Suminoe-ku, Osaka 559-0034, Japan
| | - Vadim A. Soloshonok
- Department
of Organic Chemistry I, Faculty of Chemistry, University of the Basque Country UPV/EHU, 20018 San Sebastian, Spain
- IKERBASQUE,
Basque Foundation for Science, 48011 Bilbao, Spain
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Li C, Qin Y, Ouyang T, Yao M, Zhang A, Luo P, Pan X. miR-122-5p Mediates Fluoride-Induced Osteoblast Activation by Targeting CDK4. Biol Trace Elem Res 2021; 199:1215-1227. [PMID: 32572801 DOI: 10.1007/s12011-020-02239-z] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/08/2020] [Accepted: 06/08/2020] [Indexed: 02/07/2023]
Abstract
Chronic intake of fluoride, existing in the environment, may cause endemic fluorosis, which is characterized by the occurrence of skeletal and dental fluorosis. However, the pathogenesis of fluorosis has not yet been elucidated. Abnormal osteoblast proliferation and activation have a pivotal role in bone turnover disorders which are linked to skeletal fluorosis. MicroRNAs are involved in fundamental cellular processes, including cell proliferation. Based on our previous study, population study and in vitro experiments were designed to understand the effect of miR-122-5p on osteoblast activation in skeletal fluorosis through targeting cyclin-dependent kinase 4 (CDK4). In human populations with coal-burning type fluoride exposure, the results showed that miR-122-5p was downregulated but CDK4 expression was upregulated and miR-122-5p was negatively correlated with CDK4 expression. Furthermore, in human osteoblasts treated with sodium fluoride, we demonstrated that miR-122-5p mediated osteoblast activation of skeletal fluorosis via upregulation of the CDK4 protein. In support of this, dual-luciferase reporter assay showed that miR-122-5p modulated CDK4 protein levels by targeting its 3'-untranslated region. These findings show, for the first time, that miR-122-5p may be involved in the cause and development of skeletal fluorosis by targeting CDK4.
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Affiliation(s)
- Chen Li
- School of Public Health, the key Laboratory of Environmental Pollution Monitoring and Disease Control, Ministry of Education, Guizhou Medical University, Guiyang, 550025, China
| | - Yu Qin
- Guizhou Orthopedics Hospital, Guiyang, 550007, China
| | - Ting Ouyang
- School of Public Health, the key Laboratory of Environmental Pollution Monitoring and Disease Control, Ministry of Education, Guizhou Medical University, Guiyang, 550025, China
| | - Maolin Yao
- School of Public Health, the key Laboratory of Environmental Pollution Monitoring and Disease Control, Ministry of Education, Guizhou Medical University, Guiyang, 550025, China
| | - Aihua Zhang
- School of Public Health, the key Laboratory of Environmental Pollution Monitoring and Disease Control, Ministry of Education, Guizhou Medical University, Guiyang, 550025, China
| | - Peng Luo
- School of Public Health, the key Laboratory of Environmental Pollution Monitoring and Disease Control, Ministry of Education, Guizhou Medical University, Guiyang, 550025, 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, China.
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Li Y, Du X, Zhao Y, Wang J, Wang J. Fluoride Can Damage the Spleen of Mice by Perturbing Th1/Th2 Cell Balance. Biol Trace Elem Res 2021; 199:1493-1500. [PMID: 32710348 DOI: 10.1007/s12011-020-02264-y] [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: 02/27/2020] [Accepted: 06/21/2020] [Indexed: 10/23/2022]
Abstract
To investigate the mechanism of fluoride-induced splenic toxicity, 0, 25, 50, and 100 mg/L sodium fluoride (NaF) were administered in male mice via drinking water for 90 days. After NaF treatment, the histological structure of the spleen, the proportion of helper T 1 cell (Th1) and helper T 2 cell (Th2), and the relative expression levels of cytokines and T-bet and GATA3 were analyzed. The results showed that 50 and 100 mg/L NaF consumption can change the normal structure of mouse spleen and the proportion of Th1/Th2 cells. It also decreased the mRNA expression levels of IL-2, INF-γ, and TGF-β, but increased the levels of IL-4, IL-6, and IL-10. Importantly, fluoride increased the protein expression of GATA3 but decreased the expression of T-bet. Our findings indicate that superfluous fluoride intake damages the balance of Th1/Th2 cells by changing the levels of T-bet and GATA3 in the spleen, and further changes the expression of Th1/Th2 cell-related cytokines in the spleen microenvironment, eventually leading to spleen injury.
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Affiliation(s)
- Yanyan Li
- , Jinzhong, Shanxi, People's Republic of China
- College of Animal Science and Veterinary Medicine, Shanxi Agricultural University, Taigu, Shanxi, 030801, People's Republic of China
- Shanxi Key Laboratory of Ecological Animal Science and Environmental Veterinary Medicine, Shanxi Agricultural University, Taigu, Shanxi, 030801, People's Republic of China
| | - Xiaoping Du
- , Jinzhong, Shanxi, People's Republic of China
- College of Animal Science and Veterinary Medicine, Shanxi Agricultural University, Taigu, Shanxi, 030801, People's Republic of China
- Shanxi Key Laboratory of Ecological Animal Science and Environmental Veterinary Medicine, Shanxi Agricultural University, Taigu, Shanxi, 030801, People's Republic of China
| | - Yangfei Zhao
- , Jinzhong, Shanxi, People's Republic of China
- College of Animal Science and Veterinary Medicine, Shanxi Agricultural University, Taigu, Shanxi, 030801, People's Republic of China
- Shanxi Key Laboratory of Ecological Animal Science and Environmental Veterinary Medicine, Shanxi Agricultural University, Taigu, Shanxi, 030801, People's Republic of China
| | - Jinming Wang
- , Jinzhong, Shanxi, People's Republic of China
- College of Animal Science and Veterinary Medicine, Shanxi Agricultural University, Taigu, Shanxi, 030801, People's Republic of China
- Shanxi Key Laboratory of Ecological Animal Science and Environmental Veterinary Medicine, Shanxi Agricultural University, Taigu, Shanxi, 030801, People's Republic of China
| | - Jundong Wang
- , Jinzhong, Shanxi, People's Republic of China.
- College of Animal Science and Veterinary Medicine, Shanxi Agricultural University, Taigu, Shanxi, 030801, People's Republic of China.
- Shanxi Key Laboratory of Ecological Animal Science and Environmental Veterinary Medicine, Shanxi Agricultural University, Taigu, Shanxi, 030801, People's Republic of China.
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Lou D, Luo Y, Liu J, Zheng D, Ma R, Chen F, Yu Y, Guan Z. Refinement Impairments of Verbal-Performance Intelligent Quotient in Children Exposed to Fluoride Produced by Coal Burning. Biol Trace Elem Res 2021; 199:482-489. [PMID: 32363519 DOI: 10.1007/s12011-020-02174-z] [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: 03/06/2020] [Accepted: 04/24/2020] [Indexed: 10/24/2022]
Abstract
To explore the relationship between total intelligence quotient (IQ), verbal intelligence quotient (VIQ), performance intelligence quotient (PIQ), and fluoride exposure in children aged 8-12 years in coal-burning fluorosis area of Dafang County, Guizhou Province, China. The Wechsler Intelligence Scale for Children Revised in China (WISC-CR) was used to test the total IQ, VIQ, and PIQ in 99 children aged 8-12 years (55 in dental fluorosis group and 44 in control group). The differences in the intellectual levels between the two groups were compared, and the correlation between the intellectual level of children exposed to fluoride and the exposure dose of fluoride was analyzed. The VIQ, PIQ, and total IQ in the dental fluorosis group were 85.64 ± 16.53, 94.87 ± 12.73, and 88.51 ± 12.77, respectively, and these were lower than those in the control group (94.34 ± 16.04, 99.23 ± 12.44, and 96.64 ± 11.70, respectively). Significant difference was observed in VIQ and total IQ between the two groups (P = 0.002, P = 0.01), but not in the PIQ (P > 0.05). Each item of VIQ impairment (common sense, similar, arithmetic, vocabulary, and understanding) was significantly lower than those without VIQ impairment in the dental fluorosis group (P < 0.05). There was a significant difference in two items of building blocks and decoding between PIQ impairment and normal group (P < 0.05). Children with fluorosis in coal-burning areas had impaired IQ and obviously had impaired VIQ. Thus, the language learning ability should be strengthened in children exposed to fluorosis.
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Affiliation(s)
- Didong Lou
- School of Basic Medicine Sciences, Guizhou University of Traditional Chinese Medicine, Guizhou, People's Republic of China.
| | - Yan Luo
- Guiyang Maternal and Child Health Care Hospital, Guizhou, People's Republic of China
| | - Jing Liu
- Guiyang Maternal and Child Health Care Hospital, Guizhou, People's Republic of China
| | - Dan Zheng
- Guiyang Maternal and Child Health Care Hospital, Guizhou, People's Republic of China
| | - Rongrong Ma
- School of Basic Medicine Sciences, Guizhou University of Traditional Chinese Medicine, Guizhou, People's Republic of China
| | - Fangping Chen
- School of Basic Medicine Sciences, Guizhou University of Traditional Chinese Medicine, Guizhou, People's Republic of China
| | - Yanni Yu
- Key Laboratory of Local Diseases and Minority Diseases, Ministry of Education, Guizhou Medical University, Guizhou, People's Republic of China
| | - Zhizhong Guan
- Key Laboratory of Local Diseases and Minority Diseases, Ministry of Education, Guizhou Medical University, Guizhou, People's Republic of China
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Prystupa A, Sak J, Kiciński P, Stenzel-Bembenek A, Błażewicz A. Serum Concentration of Fluoride in Patients with Alcoholic Liver Cirrhosis from the Lublin Region in Eastern Poland. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2021; 18:ijerph18031115. [PMID: 33513857 PMCID: PMC7908415 DOI: 10.3390/ijerph18031115] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/21/2020] [Revised: 01/20/2021] [Accepted: 01/22/2021] [Indexed: 01/03/2023]
Abstract
In view of previous reports, it is important to determine the relationship between liver function and the level of fluoride in the serum. The aim of this study was to investigate serum concentrations of fluoride in 72 patients with alcoholic liver cirrhosis, living in the region of Lublin (Eastern Poland) divided based on the severity of disease according to the Child-Turcotte-Pugh criteria. Higher plasma fluoride concentrations were associated with changes in liver related parameters. In all groups of analyzed patients with different stages of alcoholic liver cirrhosis, elevated levels of plasma fluoride and increased activities of both alanine aminotransferase (ALT) and total bilirubin concentration were shown.
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Affiliation(s)
- Andrzej Prystupa
- Department of Internal Medicine, Medical University of Lublin, 20-081 Lublin, Poland;
| | - Jarosław Sak
- Chair and Department of Humanities and Social Medicine, Medical University of Lublin, 20-093 Lublin, Poland
- Biobanking and BioMolecular Resources Research Infrastructure, 20-059, Lublin, Poland
- Correspondence:
| | - Paweł Kiciński
- Department of Experimental Hematooncology, Medical University of Lublin, 20-093 Lublin, Poland;
| | - Agnieszka Stenzel-Bembenek
- Chair and Department of Biochemistry and Molecular Biology, Medical University of Lublin, 20-093 Lublin, Poland;
| | - Anna Błażewicz
- Department of Analytical Chemistry, Medical University of Lublin, 20-093 Lublin, Poland;
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Li Y, Zhao Y, Wang J, Cheng M, Wang J. Interleukin 17A deficiency alleviates fluoride-induced testicular injury by inhibiting the immune response and apoptosis. CHEMOSPHERE 2021; 263:128178. [PMID: 33297146 DOI: 10.1016/j.chemosphere.2020.128178] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/11/2020] [Revised: 08/20/2020] [Accepted: 08/26/2020] [Indexed: 06/12/2023]
Abstract
The reproductive toxicity of fluoride (F) has been verified by various epidemiological and experimental studies. Our previous work suggested that the interleukin 17A (IL-17A) is involved in the testicular damage induced by excessive F exposure. In this study, we further investigated the role of IL-17A in F-induced testicular injury. Wild type (WT) and IL-17A knockout (IL-17A-/-) mice were exposed to 0, 25, 50, or 100 mg/L sodium fluoride (NaF) for 90 days. We found that exposure to excessive F levels caused testicular damage, decreased semen quality, negatively affected testicular morphology, and increased the inflammatory response. Specifically, excessive F intake increased the expression levels of IL-17A in the testis and increased the protein levels of Act1, NF-κB, IL-17R, C/EBP-α, and TRAF6 in the IL-17A signaling pathway. The increase in IL-17A expression corresponded to increases expression of IL-17R, IL-6, IL-23, IL-1β, TGF-β and TNF-α as assessed by RT-PCR and ELISA assays. Remarkably, IL-17A knockout in mice ameliorated the effects of F on testicular damage, semen quality, testicular morphology, and the immune response. Additionally, we found the in vitro exposure of Leydig cells to NaF and recombinant IL-17A led to abnormal apoptosis and a decrease in testosterone secretion. Our findings prove that IL-17A plays a key role in the exacerbation of testicular injuries in F-exposed mice, and that IL-17A deficiency can alleviate F-induced injury by inhibiting the immune response and apoptosis in the testis. These data suggest that targeting IL-17A may be a useful therapeutic strategy for treating F-mediated toxicity in the testis.
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Affiliation(s)
- Yanyan Li
- College of Animal Science and Veterinary Medicine, Shanxi Agricultural University, Taigu, Shanxi, 030801, PR China; Shanxi Key Laboratory of Environmental Veterinary Medicine, Shanxi Agricultural University, Taigu, Shanxi 030801, PR China
| | - Yangfei Zhao
- College of Animal Science and Veterinary Medicine, Shanxi Agricultural University, Taigu, Shanxi, 030801, PR China; Shanxi Key Laboratory of Environmental Veterinary Medicine, Shanxi Agricultural University, Taigu, Shanxi 030801, PR China
| | - Jinming Wang
- College of Animal Science and Veterinary Medicine, Shanxi Agricultural University, Taigu, Shanxi, 030801, PR China; Shanxi Key Laboratory of Environmental Veterinary Medicine, Shanxi Agricultural University, Taigu, Shanxi 030801, PR China
| | - Min Cheng
- College of Animal Science and Veterinary Medicine, Shanxi Agricultural University, Taigu, Shanxi, 030801, PR China; Shanxi Key Laboratory of Environmental Veterinary Medicine, Shanxi Agricultural University, Taigu, Shanxi 030801, PR China
| | - Jundong Wang
- College of Animal Science and Veterinary Medicine, Shanxi Agricultural University, Taigu, Shanxi, 030801, PR China; Shanxi Key Laboratory of Environmental Veterinary Medicine, Shanxi Agricultural University, Taigu, Shanxi 030801, PR China.
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Saha D, Goswami R, Majumdar KK, Sikdar N, Pramanik S. Evaluating the Association Between Dental Fluorosis and Polymorphisms in Bone Development and Mineralization Genes Among Population from a Fluoride Endemic Region of Eastern India. Biol Trace Elem Res 2021; 199:1-8. [PMID: 32185656 DOI: 10.1007/s12011-020-02116-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/09/2019] [Accepted: 03/04/2020] [Indexed: 11/25/2022]
Abstract
Close to 12 million people in India are affected by more than the desirable level of fluoride in drinking water that could lead to dental, skeletal, and non-skeletal fluorosis. Dental fluorosis is a developmental defect that results in hypo-mineralization and pronounced porosity of enamel in the affected individuals. As estrogen receptor 1 (ESR1), collagen type 1 alpha 2 (COL1A2), bone γ-carboxyglutamic acid protein (BGLAP), and secreted protein acidic and cysteine rich (SPARC) genes are involved in bone development and mineralization, polymorphisms in these genes could be determining factors in influencing the risk to fluorosis among the exposed individuals in fluoride endemic areas. A case-control study was carried out among a total of 87 individuals (case = 36, control = 51) to examine the association between selected polymorphisms in the ESR1, COL1A2, BGLAP, and SPARC genes and risk of dental fluorosis from a fluoride endemic region of Eastern India. Altogether, 10 single nucleotide polymorphisms (SNPs) in ESR1 (rs2234693, rs2228480, rs3798577, rs2077647, and rs9340799), COL1A2 (rs42524, rs412777), BGLAP (rs1800247), and SPARC (rs6579885, rs4958278) genes were genotyped through PCR-RFLP in these subjects. The association of the SNPs for disease risk estimation was measured by odds ratio with 95% confidence interval. The risk genotypes of none of the 10 SNPs showed statistically significant association with risk of dental fluorosis. Frequencies of the haplotypes in the intragenic SNPs of the ESR1, COL1A2, and SPARC genes did not reveal any statistically significant difference between the case and control groups. The present study is the first of its kind from India that has attempted to investigate possible involvement of genetic factors in influencing the risk to fluorosis among the population from a fluoride endemic region.
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Affiliation(s)
- Depanwita Saha
- Kolkata Zonal Centre, CSIR-National Environmental Engineering Research Institute, i-8, Sector-C, East Kolkata Township, Kolkata, 700107, India
| | - Rakesh Goswami
- Kolkata Zonal Centre, CSIR-National Environmental Engineering Research Institute, i-8, Sector-C, East Kolkata Township, Kolkata, 700107, India
| | - Kunal Kanti Majumdar
- Department of Community Medicine, KPC Medical College and Hospital, 1F Raja S. C. Mullick Road, Jadavpur, Kolkata, 700032, India
| | - Nilabja Sikdar
- Human Genetics Unit, Indian Statistical Institute, 203 B. T. Road, Baranagar, Kolkata, 700108, India
| | - Sreemanta Pramanik
- Kolkata Zonal Centre, CSIR-National Environmental Engineering Research Institute, i-8, Sector-C, East Kolkata Township, Kolkata, 700107, India.
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Come J, Pereira JB, Pinto R, Carrilho C, Pereira L, Lara Santos L. The Upper Digestive Tract Microbiome and Oesophageal Squamous Cell Carcinoma: Epidemiology, Pathogenesis, and Clinical Implications in Africa. Pathobiology 2020; 88:141-155. [PMID: 33291118 DOI: 10.1159/000511422] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2020] [Accepted: 09/07/2020] [Indexed: 12/24/2022] Open
Abstract
The study of the microbiome has significantly contributed to our understanding of complex diseases including cancer, with a profound influence of the microbiota on clinical prognosis and the efficacy of cancer treatments. Oesophageal cancer is positioned amongst the most aggressive malignant diseases, resulting from a complex interaction between anthropometric, genetic, immune response, and environmental factors. Oesophageal squamous cell carcinoma (OSCC) is the most common type of oesophageal cancer and is a serious burden in Eastern Africa, in the area known as the African oesophageal cancer corridor (AOCC). OSCC is often diagnosed at a late stage, with patients already suffering from severe malnutrition and dehydration due to swallowing difficulties, leading to high mortality rates. So far, aetiological factors have been individually analysed with an inappropriate contextualisation. The upper digestive tract microbiome has been proposed to contribute to the onset and progression of OSCC but with limited understanding of the mechanisms behind this interaction. Data on African populations are limited, and the aetiology of AOCC is still poorly understood. This review discusses the current knowledge of the aetiology of OSCC in Africa, with special focus on the probable influence of the upper digestive tract microbiota.
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Affiliation(s)
- Jotamo Come
- Departamento de Cirurgia, Hospital Central de Maputo, Maputo, Mozambique
| | - Joana Barbosa Pereira
- i3S, Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Porto, Portugal.,IPATIMUP, Instituto de Patologia e Imunologia Molecular da Universidade do Porto, Porto, Portugal
| | - Ricardo Pinto
- i3S, Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Porto, Portugal.,IPATIMUP, Instituto de Patologia e Imunologia Molecular da Universidade do Porto, Porto, Portugal
| | - Carla Carrilho
- Departamento de Patologia, Faculdade de Medicina, Universidade Eduardo Mondlane, Maputo, Mozambique.,Departamento de Patologia, Hospital Central de Maputo, Maputo, Mozambique
| | - Luisa Pereira
- i3S, Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Porto, Portugal.,IPATIMUP, Instituto de Patologia e Imunologia Molecular da Universidade do Porto, Porto, Portugal
| | - Lúcio Lara Santos
- Grupo de Patologia e Terapêutica Experimental e Departamento de Oncologia do Instituto Português de Oncologia do Porto, Porto, Portugal, .,ONCOCIR - Education and Care in Oncology, PALOP - Lusophone Africa, Porto, Portugal,
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Gao J, Qin Y, Luo K, Wang X, Yu C, Zhang A, Pan X. Downregulation of miR-4755-5p promotes fluoride-induced osteoblast activation via tageting Cyclin D1. J Trace Elem Med Biol 2020; 62:126626. [PMID: 32731110 DOI: 10.1016/j.jtemb.2020.126626] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/31/2020] [Revised: 07/01/2020] [Accepted: 07/16/2020] [Indexed: 02/06/2023]
Abstract
BACKGROUND Endemic fluorosis remains a major public health issue in many countries. Fluoride can cause abnormalities in osteoblast proliferation and activation, leading to skeletal fluorosis. However, its detailed molecular mechanism remains unclear. Based on a previous study, the aim of this study is to explore the role of miRNA in osteoblast activation of skeletal fluorosis via targeting of Cyclin D1. METHODS A population study of coal-burning fluorosis and in vitro experiments were performed in this study. Urine fluoride (UF) concentrations of the participants were determined using a national standardized ion selective electrode approach. Based on our previous miRNA sequence results, bioinformatic analysis was used to predict miR-4755-5p targeting Cyclin D1. Quantitative real-time PCR (qRT-PCR) was used to verify the expression of miR-4755-5p. The expression of Cyclin D1 mRNA was detected by qRT-PCR. The expression of Cyclin D1 protein was detected by enzyme-linked immunosorbent assay (ELISA) and Western blotting, respectively. Cell viability was detected by CCK-8 method. The distribution of the cell cycle was analyzed by flow cytometry. The alkaline phosphatase (ALP) activity and bone Gla protein (BGP) content were detected by micronutrient enzymes standard method and ELISA. The target binding between miR-4755-5p and Cyclin D1 was verified using dual-luciferase reporter assay. RESULTS In the fluoride-exposed population, the results showed that with the increase in UF content, the expression of miR-4755-5p decreased gradually, while the mRNA transcription and protein expression of Cyclin D1 increased gradually. The relative miR-4755-5p expression showed a negative correlation with Cyclin D1 expression. Subsequently, in human osteoblasts treated with sodium fluoride (NaF), the results also showed that NaF caused low expression of miR-4755-5p and increased expression of Cyclin D1. Further, the results of miR-4755-5p mimic transfection confirmed that under the action of NaF, miR-4755-5p overexpression reduced Cyclin D1 protein expression within osteoblasts and further inhibited cell proliferation and activation. Simultaneously, luciferase reporter assays verified that Cyclin D1 was the miR-4755-5p direct target. CONCLUSION The results demonstrate that fluoride exposure induced the downregulation of miR-4755-5p and downregulated miR-4755-5p promoted fluoride-induced osteoblast activation by increasing Cyclin D1 protein expression. This study sheds new light on biomarkers and potential treatment for endemic fluorosis.
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Affiliation(s)
- Jiayu Gao
- School of Public Health, The Key Laboratory of Environmental Pollution Monitoring and Disease Control, Ministry of Education, Guizhou Medical University, Guiyang, 550025, China
| | - Yu Qin
- Guizhou Orthopedics Hospital, Guiyang, 550007, China
| | - Keke Luo
- School of Public Health, The Key Laboratory of Environmental Pollution Monitoring and Disease Control, Ministry of Education, Guizhou Medical University, Guiyang, 550025, 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, China
| | - Chun Yu
- School of Public Health, The Key Laboratory of Environmental Pollution Monitoring and Disease Control, Ministry of Education, Guizhou Medical University, Guiyang, 550025, China
| | - Aihua Zhang
- School of Public Health, The Key Laboratory of Environmental Pollution Monitoring and Disease Control, Ministry of Education, Guizhou Medical University, Guiyang, 550025, 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, China.
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Yüksek V, Çetin S, Usta A. The effect of vitamin E and selenium combination in repairing fluoride-induced DNA damage to NRK-52E cells. Mol Biol Rep 2020; 47:7761-7770. [PMID: 33025505 DOI: 10.1007/s11033-020-05852-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2020] [Accepted: 09/19/2020] [Indexed: 01/11/2023]
Abstract
Prolonged and excessive fluoride exposure can lead to fluorosis. The kidney is one of the organs that are injured mostly due to fluoride-induced damage. Fluoride can induce DNA damage at cytotoxic concentrations. This study aims to determine the extent of NaF-induced DNA damage and to investigate the effect of vitamin E and selenium combination (ES) in preventing and repairing this damage. For this purpose, we administered different combinations of NaF and ES to NRK-52E cells and determined the effective concentrations of ES and the NaF IC50 values associated with different incubation times (3, 12, and 24 h) by using the MTT assay. The determined quantities of NaF IC50 in association with time and the NaF IC50 + ES combination were administered to the cells. The extent of DNA damage was determined with the comet assay and the expression levels of the Ku70/80 and PARP-1 genes were determined with the RT-qPCR method. DNA damage significantly increased in all experimental groups compared to the control group (p < 0.05). It was found out that the NaF and ES combination statistically reduced the DNA damage compared to the damage observed in the NaF-treated groups (p < 0.05). Treatment of the ES combination significantly increased the expressions of Ku70 and Ku80 genes involved in DNA repair (p < 0.05). We concluded that vitamin E and selenium can potentially be effective in the repair of fluoride-induced DNA damage based on the results of this in vitro study. Our results may shed light on the prevention of DNA damage associated with fluorosis.
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Affiliation(s)
- Veysel Yüksek
- Department of Medical Laboratory, Özalp Vocational High SchoolVan Yuzuncu Yil University, Van, Turkey.
| | - Sedat Çetin
- Department of Biochemistry, Faculty of Veterinary Medicine, Van Yuzuncu Yil University, Van, Turkey
| | - Ayşe Usta
- Department of Chemistry, Faculty of Science, Van Yuzuncu Yil University, Van, Turkey
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44
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Dey Bhowmik A, Podder S, Mondal P, Shaw P, Bandyopadhyay A, Das A, Bhattacharjee P, Chakraborty A, Sudarshan M, Chattopadhyay A. Chronic exposure to environmentally relevant concentration of fluoride alters Ogg1 and Rad51 expressions in mice: Involvement of epigenetic regulation. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2020; 202:110962. [PMID: 32800233 DOI: 10.1016/j.ecoenv.2020.110962] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/03/2020] [Revised: 06/26/2020] [Accepted: 06/28/2020] [Indexed: 06/11/2023]
Abstract
Chronic exposure to fluoride (F) beyond the permissible limit (1.5 ppm) is known to cause detrimental health effects by induction of oxidative stress-mediated DNA damage overpowering the DNA repair machinery. In the present study, we assessed F induced oxidative stress through monitoring biochemical parameters and looked into the effect of chronic F exposure on two crucial DNA repair genes Ogg1 and Rad51 having important role against ROS induced DNA damages. To address this issue, we exposed Swiss albino mice to an environmentally relevant concentration of fluoride (15 ppm NaF) for 8 months. Results revealed histoarchitectural damages in liver, brain, kidney and spleen. Depletion of GSH, increase in lipid peroxidation and catalase activity in liver and brain confirmed the generation of oxidative stress. qRT-PCR result showed that expressions of Ogg1 and Rad51 were altered after F exposure in the affected organs. Promoter hypermethylation was associated with the downregulation of Rad51. F-induced DNA damage and the compromised DNA repair machinery triggered intrinsic pathway of apoptosis in liver and brain. The present study indicates the possible association of epigenetic regulation with F induced neurotoxicity.
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Affiliation(s)
- Arpan Dey Bhowmik
- Department of Zoology, Visva-Bharati, Santiniketan, 731235, West Bengal, India
| | - Santosh Podder
- Department of Zoology, Visva-Bharati, Santiniketan, 731235, West Bengal, India; Indian Institute of Science Education and Research (IISER) Pune, Dr. Homi Bhabha Road, Pashan, Pune, 411 008, India
| | - Paritosh Mondal
- Department of Zoology, Visva-Bharati, Santiniketan, 731235, West Bengal, India
| | - Pallab Shaw
- Department of Zoology, Visva-Bharati, Santiniketan, 731235, West Bengal, India
| | | | - Ankita Das
- Department of Environmental Science, University of Calcutta, 35, Ballygunge Circular Road, Kolkata, 700019, India
| | - Pritha Bhattacharjee
- Department of Environmental Science, University of Calcutta, 35, Ballygunge Circular Road, Kolkata, 700019, India
| | - Anindita Chakraborty
- UGC-DAE Consortium for Scientific Research, Kolkata Centre, 3/LB-8, Bidhan Nagar, Kolkata, 700098, India
| | - Muthammal Sudarshan
- UGC-DAE Consortium for Scientific Research, Kolkata Centre, 3/LB-8, Bidhan Nagar, Kolkata, 700098, India
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45
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Raut AW, Mantri V, Gedam PV, Phabyani PP. Conservative esthetic management of severe dental fluorosis with in-office power bleaching. Ann Afr Med 2020; 19:211-214. [PMID: 32820736 PMCID: PMC7694703 DOI: 10.4103/aam.aam_52_19] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
Fluorosis is an endemic disease, prevailing in about 25 countries globally. Dental fluorosis is an acquired defect of enamel due to the exposure of an individual to excessive fluoride levels during tooth development. It could result in mild-to-severe discoloration of teeth, which might necessitate esthetic correction. Bleaching is one of the common treatment modalities used in the esthetic correction of such cases. In-office power bleaching is one of the techniques of tooth bleaching that involves clinical application and activation of the bleaching agent with light to accelerate the bleaching process. This case report describes the esthetic correction of severe dental fluorosis by power bleaching, without any need for invasive treatment. This report suggests that in-office power bleaching is an effective and conservative method for esthetic correction of tooth discoloration in severe dental fluorosis.
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Affiliation(s)
- Ambar W Raut
- Department of Conservative Dentistry and Endodontics, Swargiya Dadasaheb Kalmegh Smruti Dental College and Hospital, Nagpur, Maharashtra, India
| | - Vijay Mantri
- Modern Dental College and Research Centre, Indore, Madhya Pradesh, India
| | - Priyanka V Gedam
- Department of Conservative Dentistry and Endodontics, Swargiya Dadasaheb Kalmegh Smruti Dental College and Hospital, Nagpur, Maharashtra, India
| | - Pooja P Phabyani
- Department of Conservative Dentistry and Endodontics, Swargiya Dadasaheb Kalmegh Smruti Dental College and Hospital, Nagpur, Maharashtra, India
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46
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Sun R, Zhou G, Liu L, Ren L, Xi Y, Zhu J, Huang H, Li Z, Li Y, Cheng X, Ba Y. Fluoride exposure and CALCA methylation is associated with the bone mineral density of Chinese women. CHEMOSPHERE 2020; 253:126616. [PMID: 32283421 DOI: 10.1016/j.chemosphere.2020.126616] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/14/2019] [Revised: 03/22/2020] [Accepted: 03/23/2020] [Indexed: 06/11/2023]
Abstract
Excessive exposure to fluoride has been reported to affect bone mineral density (BMD). CALCA expression plays a critical part in bone formation. However, the role of CALCA in the association between fluoride and BMD is not known. We conducted a cross-sectional study and recruited 722 women in rural areas of Henan Province, China, to assess the relationship between fluoride exposure, CALCA methylation, and BMD. Urinary levels of fluoride, CALCA methylation, and BMD were measured by a fluoride ion-selective electrode, standalone ultrasound bone densitometer, and quantitative methylation-specific polymerases chain reaction, respectively. The association among fluoride exposure, CALCA methylation, and BMD was age-specific. Specifically, BMD was negatively correlated with methylation (β: -0.008; 95% CI: -0.016, 0.000) and fluoride exposure (β: -0.063; 95% CI: -0.129, -0.002) in women over 45 years and 50-54 years of age, respectively, whereas methylation was positively correlated with fluoride exposure (β: 4.953; 95% CI: 1.162, 8.743) in women aged 40-44 years. Besides, increased BMD in women aged 45-49 years induced by the interactive effect of the highest methylation of CALCA exon 1 (tertile 3) and fluoride exposure was observed (P for interaction < 0.05). Our findings suggest an age-specific association between exposure to excessive fluoride, CALCA methylation, and BMD in a rural population of women in China. Notably, the susceptibility of BMD to fluoride exposure may be modified by CALCA methylation.
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Affiliation(s)
- Renjie Sun
- Department of Environmental Health, School of Public Health, Zhengzhou University, Zhengzhou, Henan, 450001, China; Environment and Health Innovation Team, School of Public Health, Zhengzhou University, Zhengzhou, Henan, 450001, China
| | - Guoyu Zhou
- Department of Environmental Health, School of Public Health, Zhengzhou University, Zhengzhou, Henan, 450001, China; Environment and Health Innovation Team, School of Public Health, Zhengzhou University, Zhengzhou, Henan, 450001, China
| | - Lihua Liu
- Department of Environmental Health, School of Public Health, Zhengzhou University, Zhengzhou, Henan, 450001, China
| | - Lijun Ren
- Department of Endemic Disease, Kaifeng Center for Disease Control and Prevention, Kaifeng, Henan, 475000, China
| | - Yu Xi
- Tongxu Center for Disease Control and Prevention, Kaifeng, Henan, 475400, China
| | - Jingyuan Zhu
- Department of Environmental Health, School of Public Health, Zhengzhou University, Zhengzhou, Henan, 450001, China
| | - Hui Huang
- Department of Environmental Health, School of Public Health, Zhengzhou University, Zhengzhou, Henan, 450001, China; Environment and Health Innovation Team, School of Public Health, Zhengzhou University, Zhengzhou, Henan, 450001, China
| | - Zhiyuan Li
- Department of Environmental Health, School of Public Health, Zhengzhou University, Zhengzhou, Henan, 450001, China
| | - Yan Li
- Department of Environmental Health, School of Public Health, Zhengzhou University, Zhengzhou, Henan, 450001, China; Environment and Health Innovation Team, School of Public Health, Zhengzhou University, Zhengzhou, Henan, 450001, China
| | - Xuemin Cheng
- Department of Environmental Health, School of Public Health, Zhengzhou University, Zhengzhou, Henan, 450001, China; Environment and Health Innovation Team, School of Public Health, Zhengzhou University, Zhengzhou, Henan, 450001, China
| | - Yue Ba
- Department of Environmental Health, School of Public Health, Zhengzhou University, Zhengzhou, Henan, 450001, China; Environment and Health Innovation Team, School of Public Health, Zhengzhou University, Zhengzhou, Henan, 450001, China.
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47
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Johnston NR, Strobel SA. Principles of fluoride toxicity and the cellular response: a review. Arch Toxicol 2020; 94:1051-1069. [PMID: 32152649 PMCID: PMC7230026 DOI: 10.1007/s00204-020-02687-5] [Citation(s) in RCA: 111] [Impact Index Per Article: 27.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2019] [Accepted: 02/21/2020] [Indexed: 02/04/2023]
Abstract
Fluoride is ubiquitously present throughout the world. It is released from minerals, magmatic gas, and industrial processing, and travels in the atmosphere and water. Exposure to low concentrations of fluoride increases overall oral health. Consequently, many countries add fluoride to their public water supply at 0.7-1.5 ppm. Exposure to high concentrations of fluoride, such as in a laboratory setting often exceeding 100 ppm, results in a wide array of toxicity phenotypes. This includes oxidative stress, organelle damage, and apoptosis in single cells, and skeletal and soft tissue damage in multicellular organisms. The mechanism of fluoride toxicity can be broadly attributed to four mechanisms: inhibition of proteins, organelle disruption, altered pH, and electrolyte imbalance. Recently, there has been renewed concern in the public sector as to whether fluoride is safe at the current exposure levels. In this review, we will focus on the impact of fluoride at the chemical, cellular, and multisystem level, as well as how organisms defend against fluoride. We also address public concerns about fluoride toxicity, including whether fluoride has a significant effect on neurodegeneration, diabetes, and the endocrine system.
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Affiliation(s)
- Nichole R Johnston
- Department of Molecular Biophysics and Biochemistry, Yale University, New Haven, CT, 06520, USA
| | - Scott A Strobel
- Department of Molecular Biophysics and Biochemistry, Yale University, New Haven, CT, 06520, USA.
- Department of Chemistry, Yale University, New Haven, CT, 06520, USA.
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48
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Duran-Merino D, Molina-Frechero N, Sánchez-Pérez L, Nevárez-Rascón M, González-González R, Tremillo-Maldonado O, Cassi D, Bologna-Molina R. ENAM Gene Variation in Students Exposed to Different Fluoride Concentrations. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2020; 17:ijerph17061832. [PMID: 32178265 PMCID: PMC7143052 DOI: 10.3390/ijerph17061832] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/13/2020] [Revised: 03/06/2020] [Accepted: 03/08/2020] [Indexed: 02/07/2023]
Abstract
UNLABELLED The ENAM gene is important in the formation of tooth enamel; an alteration can affect the lengthening of the crystals, and the thickness in enamel. The objective was to determine the presence of the single nucleotide variant (SNV) rs12640848 of the ENAM gene in students exposed to different concentrations of fluoride. METHODS A cross-sectional study was conducted on students exposed to high concentrations of fluoride in the city of Durango which were divided according to the severity of fluorosis and dental caries. Genotype determination was performed by DNA sequencing. The relationship between the severity of dental fluorosis and the allele distribution was determined by the Fisher's exact and Kruskal-Wallis tests. RESULTS Seventy-one students were included for the sequencing. In the different allelic variations, for the normal genotype AA/TT, the control group presented 75%, for the AG/TC variation, 70.8% in the TF ≤ 4 group, 65% in TF ≥ 5, and 16.7% in TF = 0; with respect to GG/CC variation, 12.5% in TF ≤ 4, 22% in TF ≥ 5, and 8.3% in TF = 0 group (p = 0.000). CONCLUSION The ENAM gene showed an association in the population exposed to different concentrations of fluoride.
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Affiliation(s)
- Denisse Duran-Merino
- Dental Sciences, Autonomous Metropolitan University Xochimilco (UAM), Calzada del Hueso 1100, Mexico City 04900, Mexico;
| | - Nelly Molina-Frechero
- Department of Health Care, Autonomous Metropolitan University Xochimilco (UAM), Calzada del Hueso 1100, Mexico City 04900, Mexico;
- Correspondence: ; Tel.: +52-55-5483-7182
| | - Leonor Sánchez-Pérez
- Department of Health Care, Autonomous Metropolitan University Xochimilco (UAM), Calzada del Hueso 1100, Mexico City 04900, Mexico;
| | - Martina Nevárez-Rascón
- School of Dentistry, Autonomous University of Chihuahua (UACH), Chihuahua, Campus I Av. Universidad s/n, Chihuahua 31000, Mexico;
| | - Rogelio González-González
- Department of Research, School of Dentistry, Juarez University of the State of Durango, Durango (UJED) Predio Canoas s/n, Durango 34000, Mexico; (R.G.-G.); (O.T.-M.)
| | - Omar Tremillo-Maldonado
- Department of Research, School of Dentistry, Juarez University of the State of Durango, Durango (UJED) Predio Canoas s/n, Durango 34000, Mexico; (R.G.-G.); (O.T.-M.)
| | - Diana Cassi
- Department of Surgical, Medical, Dental and Morphological Science–University of Modena, 41121 Modena, Italy;
| | - Ronell Bologna-Molina
- Molecular Pathology Area, School of Dentistry, University of the Republic, Uruguay (UDELAR) Montevideo 11600, Montevideo 11200, Uruguay;
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49
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Sellami M, Riahi H, Maatallah K, Ferjani H, Bouaziz MC, Ladeb MF. Skeletal fluorosis: don't miss the diagnosis! Skeletal Radiol 2020; 49:345-357. [PMID: 31501957 DOI: 10.1007/s00256-019-03302-0] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/04/2019] [Revised: 08/18/2019] [Accepted: 08/20/2019] [Indexed: 02/02/2023]
Abstract
Skeletal fluorosis is a rare toxic osteopathy characterized by massive bone fixation of fluoride. The disease occurs as an endemic problem in some parts of the world and is the result of prolonged ingestion or rarely by inhalation of high amounts of fluoride. Radiographic presentation is mainly characterized by bone changes with osteocondensation and later ossification of many ligaments and interosseous membranes. Skeletal fluorosis is not clinically obvious and can be confused with other rheumatologic disorders. Its severity lies in the development of skeletal deformities and neurological complications. Management of fluorosis generally focuses on symptom treatment.
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Affiliation(s)
- Meriem Sellami
- Radiology Department, Orthopaedic Institute M T Kassab, University of Tunis El Manar- Faculty of Medicine of Tunis, Ksar Said, 2010, Manouba, Tunisia.
| | - Hend Riahi
- Radiology Department, Orthopaedic Institute M T Kassab, University of Tunis El Manar- Faculty of Medicine of Tunis, Ksar Said, 2010, Manouba, Tunisia
| | - Kaouther Maatallah
- Rheumatology Department, Orthopaedic Institute M T Kassab, University of Tunis El Manar- Faculty of Medicine of Tunis, Manouba, Tunisia
| | - Hanen Ferjani
- Rheumatology Department, Orthopaedic Institute M T Kassab, University of Tunis El Manar- Faculty of Medicine of Tunis, Manouba, Tunisia
| | - Mouna Chelli Bouaziz
- Radiology Department, Orthopaedic Institute M T Kassab, University of Tunis El Manar- Faculty of Medicine of Tunis, Ksar Said, 2010, Manouba, Tunisia
| | - Mohamed Fethi Ladeb
- Radiology Department, Orthopaedic Institute M T Kassab, University of Tunis El Manar- Faculty of Medicine of Tunis, Ksar Said, 2010, Manouba, Tunisia
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50
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Tremillo-Maldonado O, Molina-Frechero N, González-González R, Damián-Matsumura P, Sánchez-Pérez L, Sicco E, Suarez M, Bologna-Molina R. DNA sequencing reveals AMELX, ODAM and MMP20 variations in dental fluorosis. Arch Oral Biol 2020; 110:104626. [PMID: 31838295 DOI: 10.1016/j.archoralbio.2019.104626] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2019] [Revised: 10/30/2019] [Accepted: 11/26/2019] [Indexed: 02/07/2023]
Abstract
OBJECTIVE Dental fluorosis (DF) is a dental development disorder caused by chronic fluoride overconsumption. There are differences in the susceptibility to and severity of DF in studied populations. The objective of the present study was to determine if single-nucleotide variations (SNVs) in the genes Amelogenin (AMELX), Odontogenic Ameloblast Associated (ODAM) and Matrix Metalloproteinase 20 (MMP20) are associated with DF by evaluating the relationship between variations in these genes and the degree of DF severity. SUBJECTS AND METHODS Schoolchildren from two regions of Durango State and Mexico City, Mexico, were studied. The DF phenotype was determined using the Thylstrup and Fejerskov (TF) index. DNA was obtained from the buccal mucosa of each participant, and the presence of the variations rs946252 in AMELX, rs1514392 in ODAM and rs1784418 in MMP20 was determined by bidirectional DNA sequencing. RESULTS A total of 180 DNA samples from 30 schoolchildren from 2 areas of Durango State were sequenced and analyzed. Differences in the severity of DF were found between the study areas (p = 0.006). SNVs in theMMP20 gene were present in 76.9 % of the participants in the high fluoride concentration and lower DF severity area. CONCLUSION AMELX and ODAM variations was not different between the two populations with respect to DF severity; however, the presence of rs1784418 differed between phenotypes with regard to susceptibility to DF. Therefore, MMP20 might be related to the various phenotypes of DF and may serve as a protective marker.
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Affiliation(s)
- Omar Tremillo-Maldonado
- Biological and Health Sciences Ph.D. Program, Metropolitan Autonomous University, Mexico City, Mexico
| | - Nelly Molina-Frechero
- Health and Care Department, Metropolitan Autonomous University - Xochimilco, Mexico City, Mexico.
| | | | - Pablo Damián-Matsumura
- Department of Biology of Reproduction, Metropolitan Autonomous University - Iztapalapa, Mexico City, Mexico
| | - Leonor Sánchez-Pérez
- Health and Care Department, Metropolitan Autonomous University - Xochimilco, Mexico City, Mexico
| | - Estefanía Sicco
- Molecular Pathology, Faculty of Dentistry, Universidad de la República (UDELAR), Montevideo, Uruguay
| | - Mariana Suarez
- Molecular Pathology, Faculty of Dentistry, Universidad de la República (UDELAR), Montevideo, Uruguay
| | - Ronell Bologna-Molina
- Molecular Pathology, Faculty of Dentistry, Universidad de la República (UDELAR), Montevideo, Uruguay
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