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Kallala R, Slimani A, Gassara Y, Garrach B, Chouchen S, Foddha H, Rouis A, Kenani A. The association between Dental Fluorosis and COL1A2 gene polymorphism among a Tunisian Population. BMC Oral Health 2024; 24:376. [PMID: 38519884 PMCID: PMC10958825 DOI: 10.1186/s12903-024-04086-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2023] [Accepted: 02/28/2024] [Indexed: 03/25/2024] Open
Abstract
Dental fluorosis (DF) is a prevalent developmental defect of tooth enamel caused by exposure to excessive fluoride, with the severity dependent on various factors. This study aimed to investigate the association between DF and a specific genetic polymorphism (rs412777) in the COL1A2 gene among a Tunisian population. A case-control study was conducted from July to November 2022, involving a total of 95 participants including 51 cases and 44 controls. Dental examinations and genetic analysis were performed to assess the relationship between the COL1A2 gene polymorphism and DF.The results of allelic distribution revealed that A allele carriers were significantly protected against (DF) when compared to those with the C allele (C vs. A, p = 0.001; OR = 0.375 (0.207-0.672)). This suggests a strong correlation between the presence of the C allele and the risk of developing DF. Additionally, significant association between the CC genotype of rs412777 and an increased risk of DF was found under both codominant and dominant genetic models (P = 0.002 and P < 0.001 respectively).The findings suggest that genetic predisposition plays a relevant role in the development of DF. Further research is needed to explore the potential use of genetic markers for DF and their implications for public health. This study provides the first insights into the genetic factors associated with DF in the Tunisian population, contributing to our understanding of this prevalent dental condition.
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Affiliation(s)
- Rim Kallala
- Faculty of dental Medicine Monastir, University of Monastir, Monastir, 5000, Tunisia.
- Laboratory of Occlusodontics and Ceramic Prostheses, Monastir, LR16ES15, 5000, Tunisia.
| | - Afef Slimani
- Faculty of Medicine Monastir Tunisia, University of Monastir, Monastir, 5000, Tunisia
- laboratory of Environment, Inflammation, Signaling and Pathologies, Monastir, LR 18ES40, 5000, Tunisia
| | - Yosra Gassara
- Faculty of dental Medicine Monastir, University of Monastir, Monastir, 5000, Tunisia
- Laboratory of Occlusodontics and Ceramic Prostheses, Monastir, LR16ES15, 5000, Tunisia
| | - Behaeddin Garrach
- Faculty of Medicine Monastir Tunisia, University of Monastir, Monastir, 5000, Tunisia
| | - Sawssen Chouchen
- Faculty of Pharmacy, University of Monastir, Monastir, 5000, Tunisia
- Hematology department, Fattouma Bourguiba University Hospital, Monastir, 5000, Tunisia
- Laboratory of human genome and multifactorial diseases (LR12ES07), Faculty of Pharmacy, University of Monastir, University of Monastir, Monastir, 5000, Tunisia
| | - Hajer Foddha
- Faculty of Pharmacy, University of Monastir, Monastir, 5000, Tunisia
- Laboratory of human genome and multifactorial diseases (LR12ES07), Faculty of Pharmacy, University of Monastir, University of Monastir, Monastir, 5000, Tunisia
| | - Asma Rouis
- Stomatology department, Hospital of Jammel, Monastir, 5000, Tunisia
| | - Aberraouf Kenani
- Faculty of Medicine Monastir Tunisia, University of Monastir, Monastir, 5000, Tunisia
- laboratory of Environment, Inflammation, Signaling and Pathologies, Monastir, LR 18ES40, 5000, Tunisia
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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. Int J Environ Health Res 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] [What about the content of this article? (0)] [Affiliation(s)] [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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Zhou G, Li Q, Hou X, Wu H, Fu X, Wang G, Ma J, Cheng X, Yang Y, Chen R, Li Z, Yu F, Zhu J, Ba Y. Integrated 16S rDNA sequencing and metabolomics to explore the intestinal changes in children and rats with dental fluorosis. Ecotoxicol Environ Saf 2023; 251:114518. [PMID: 36640576 DOI: 10.1016/j.ecoenv.2023.114518] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/03/2022] [Revised: 12/19/2022] [Accepted: 01/05/2023] [Indexed: 06/17/2023]
Abstract
Dental fluorosis (DF) is a widely prevalent disease caused by excessive fluoride with limited awareness of its underlying pathogenesis. Here, a pilot population study was conducted to explore the pathogenesis of DF from the perspective of intestinal microbiome changes, and verified it in animal experiments combining intestinal microbiome and metabolomics. A total of 23 children were recruited in 2017 in China and divided into DF (n = 9) and control (n = 14) groups (DFG and CG, respectively). The SD rat model was established by drinking water containing sodium fluoride (NaF). Gut microbiome profiles of children and rats were analyzed by16S rDNA V3-V4 sequencing, and the intestinal metabolomics analysis of rats was performed by LC-MS methods. The 16 S rDNA sequencing revealed that the gut microbiome composition was significantly perturbed in children in DFG compared to that in CG. Acidobacteria and Thermi were specifically observed in DFG and CG, respectively. Besides, 15 fecal microbiotas were significantly altered at the genus level in DFG. Furthermore, only the expression of annotated genes for pentose and glucuronate interconversion pathway was significant lower in DFG than that in CG (P = 0.04). Notably, in NaF-treated rats, we also observed the changes of some key components of pentose and glucuronate interconversion pathway at the level of microorganisms and metabolites. Our findings suggested that the occurrence of DF is closely related to the alteration of intestinal microorganisms and metabolites annotated in the pentose and glucuronate interconversion pathway.
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Affiliation(s)
- Guoyu Zhou
- Department of Environment Health, School of Public Health of Zhengzhou University, Zhengzhou, Henan, PR China; Yellow River Institute for Ecological Protection & Regional Coordinated Development, Zhengzhou University, Zhengzhou, Henan, PR China; National Health Commission Key Laboratory of Birth Defects Prevention, Henan Key Laboratory of Population Defects Prevention, Zhengzhou, Henan, PR China
| | - Qingyuan Li
- Department of Environment Health, School of Public Health of Zhengzhou University, Zhengzhou, Henan, PR China
| | - Xiangbo Hou
- Department of Environment Health, School of Public Health of Zhengzhou University, Zhengzhou, Henan, PR China
| | - Huiying Wu
- Department of Environment Health, School of Public Health of Zhengzhou University, Zhengzhou, Henan, PR China
| | - Xiaoli Fu
- Department of Environment Health, School of Public Health of Zhengzhou University, Zhengzhou, Henan, PR China
| | - Guoqing Wang
- Department of Environment Health, School of Public Health of Zhengzhou University, Zhengzhou, Henan, PR China
| | - Jun Ma
- Department of Endemic Disease, Kaifeng Center for Disease Control and Prevention, Kaifeng, Henan, PR China
| | - Xuemin Cheng
- Department of Environment Health, School of Public Health of Zhengzhou University, Zhengzhou, Henan, PR China
| | - Yang Yang
- Department of Preventive Medicine, School of Public Health, Zhengzhou University, Zhengzhou, Henan, PR China
| | - Ruiqin Chen
- Jinshui District Center for Disease Control and Prevention, Zhengzhou, Henan, PR China
| | - Zhiyuan Li
- Department of Environment Health, School of Public Health of Zhengzhou University, Zhengzhou, Henan, PR China
| | - Fangfang Yu
- Department of Environment Health, School of Public Health of Zhengzhou University, Zhengzhou, Henan, PR China
| | - Jingyuan Zhu
- Department of Environment Health, School of Public Health of Zhengzhou University, Zhengzhou, Henan, PR China.
| | - Yue Ba
- Department of Environment Health, School of Public Health of Zhengzhou University, Zhengzhou, Henan, PR China; Yellow River Institute for Ecological Protection & Regional Coordinated Development, Zhengzhou University, Zhengzhou, Henan, PR China.
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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] [What about the content of this article? (0)] [Affiliation(s)] [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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Wang Y, Cui Y, Zhang D, Chen C, Hou C, Cao L. Moderating Role of TSHR and PTPN22 Gene Polymorphisms in Effects of Excessive Fluoride on Thyroid: a School-Based Cross-Sectional Study. Biol Trace Elem Res 2022; 200:1104-1116. [PMID: 34050454 DOI: 10.1007/s12011-021-02753-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/11/2021] [Accepted: 05/05/2021] [Indexed: 01/06/2023]
Abstract
We aimed to investigate the relationship between the effects excessive of fluoride on thyroid health in children and the moderating role of thyroid stimulating hormone receptor (TSHR) or protein tyrosine phosphatase nonreceptor-22 (PTPN22) gene polymorphisms. Four hundred thirteen children (141 with dental fluorosis and 198 boys) were enrolled from both historical endemic and non-endemic areas of fluorosis in Tianjin, China. The fluoride exposure levels, thyroid health indicators, and TSHR (rs2268458) and PTPN22 (rs3765598) polymorphisms were examined. Multiple logistic models were applied to evaluate the relationship between dental fluorosis and thyroid abnormalities. Children over 9 year old with dental fluorosis have lower FT4 and TGAb levels and thyroid volume and higher TPOAb levels (all P < 0.05). In overall participants, children with dental fluorosis were more likely to have thyroid antibody single positive issues (adjusted P = 0.039) and less likely to have a goiter according to age or body surface area (age or BSA) (adjusted P = 0.003); In the TSHR (rs2268458) SNP = CC/CT or PTPN22 (rs3765598) SNP = CC subgroup, dental fluorosis may cause thyroid antibody single positive (adjusted P = 0.036; adjusted P = 0.002); in the TSHR (rs2268458) SNP = TT or PTPN22 (rs3765598) SNP = CC subgroup, dental fluorosis may protect children from goiter (age or BSA) (adjusted P = 0.018; adjusted P = 0.013). Excessive fluoride may induce thyroid antibody single positive and reduce goiter in children. Heterogeneity exists in the relationship between excessive fluoride and thyroid antibody single positive or goiter issues across children carrying different TSHR (rs2268458) or PTPN22 (rs3765598) genotypes.
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Affiliation(s)
- Yang Wang
- Tianjin Centers for Disease Control and Prevention, 6 Huayue Road, Hedong District, Tianjin, 300011, People's Republic of China
| | - Yushan Cui
- Tianjin Centers for Disease Control and Prevention, 6 Huayue Road, Hedong District, Tianjin, 300011, People's Republic of China
| | - Dandan Zhang
- Tianjin Centers for Disease Control and Prevention, 6 Huayue Road, Hedong District, Tianjin, 300011, People's Republic of China
| | - Chen Chen
- Tianjin Health Promotion Center, 76 Hualong Road, Hedong District, Tianjin, 300011, People's Republic of China
| | - Changchun Hou
- Tianjin Centers for Disease Control and Prevention, 6 Huayue Road, Hedong District, Tianjin, 300011, People's Republic of China.
| | - Lichun Cao
- Dazhangzhuang Community Health Service Center, 31 Yongkang Road, Beichen District, Tianjin, 300400, People's Republic of China.
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Li L, Liu X, Tao N, Chen Q, Sun Z, Yang Q, Zhao X, Liu J. Dietary carotenoid intake and dental fluorosis in relation to SOD2 (rs 11968525) polymorphisms in Guizhou, China. Asia Pac J Clin Nutr 2022; 31:320-330. [PMID: 35766568 DOI: 10.6133/apjcn.202206_31(2).0018] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
BACKGROUND AND OBJECTIVES Genetic and dietary factors are important contributors to the development of dental fluorosis (DF). This study investigated the association between DF and dietary carotenoids, and explored whether the association was modified by polymorphisms of the antioxidant enzyme superoxide dismutase 2 (SOD2 rs11968525) in Guizhou, China. METHODS AND STUDY DESIGN A cross-sectional study with a total of 899 adults aged 18-75 years were enrolled in the study. Face-to-face interviews were conducted to assess dietary habits using a validated 75 item food frequency questionnaire (FFQ). Sociodemographic and lifestyle information, and blood and urine samples were also collected. Genotypes were evaluated using TaqMan single nucleotide polymorphism (SNP) Genotyping Assay. RESULTS There were significant dose-dependent inverse associations of the prevalence of DF with intake of α-carotene, β-carotene, lutein/zeaxanthin, lycopene and total carotenoids (p-trend ranged from <0.001-0.004). The odds ratios (ORs) and 95% confidence intervals (CIs) of DF comparing the highest against lowest quartile were 0.56 (0.35, 0.92) for α-carotene, 0.53 (0.35, 0.81) for β-carotene, 0.44 (0.27, 0.74) for lycopene, 0.35 (0.21, 0.58) for lutein/zeaxanthin in combination and 0.42 (0.25, 0.69) for total carotenoids (all p-trend<0.005). Intake of β-cryptoxanthin was not found to be related to DF. The inverse association of DF with dietary intake of α-carotene and β-carotene was more evident in individuals with the AG+AA genotype (p-interaction<0.05). CONCLUSIONS Higher dietary carotenoids were associated with a lower occurrence of DF, polymorphisms in SOD2 (rs 11968525) modified the associations between dietary intake of carotene and DF. These findings provide evidence for precision prevention of fluorosis.
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Affiliation(s)
- Lianhong Li
- Department of Preventive Medicine, School of Public Health, Zunyi Medical University, Guizhou, Zunyi, China
| | - Xiang Liu
- Department of Preventive Medicine, School of Public Health, Zunyi Medical University, Guizhou, Zunyi, China
| | - Na Tao
- Department of pharmacy, Affiliated Hospital of Zunyi Medical University, Guizhou, Zunyi, China
| | - Qing Chen
- Department of Preventive Medicine, School of Public Health, Zunyi Medical University, Guizhou, Zunyi, China
| | - Zhongming Sun
- Department of Preventive Medicine, School of Public Health, Zunyi Medical University, Guizhou, Zunyi, China
| | - Qinglin Yang
- Department of pharmacy, Affiliated Hospital of Zunyi Medical University, Guizhou, Zunyi, China
| | - Xun Zhao
- Department of Chronic disease, Center of Disease Control and Prevention of Zhijin County, Guizhou, Zhijin, China
| | - Jun Liu
- Department of Preventive Medicine, School of Public Health, Zunyi Medical University, Guizhou, Zunyi, China.
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Meng X, Yao Y, Ma Y, Zhong N, Alphonse S, Pei J. Effect of fluoride in drinking water on the level of 5-methylcytosine in human and rat blood. Environ Toxicol Pharmacol 2021; 81:103511. [PMID: 33035703 DOI: 10.1016/j.etap.2020.103511] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/18/2020] [Revised: 08/25/2020] [Accepted: 10/05/2020] [Indexed: 06/11/2023]
Abstract
DNA methylation is an epigenetic modification of genome that is involved in many human diseases. Recent studies revealed DNA methylation may be associated with fluorosis. This study was aimed to evaluate the dose-response effect of fluoride on DNA methylation in human and rat blood. A commercial ELISA kit was employed to evaluate 5-methylcytosine (5-mC) level of genome in human and rat blood. A total of 281 subjects were enrolled in this study and divided into four equal-size groups by the quartile of fluoride in drinking water. The difference of 5-mC among the four groups was significant. The U-shaped relationship was found between fluoride and 5-mC in the population. The U-shaped curve was also observed in the rats with three months of fluoride treatments. Taken together, these results clue the disruption of DNA methylation in mammals may has a certain association with fluoride in natural exposures.
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Affiliation(s)
- Xinyue Meng
- Key Lab of Etiology and Epidemiology, Education Bureau of Heilongjiang Province & Ministry of Health (23618504), Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin 150081, Heilongjiang Province, China
| | - Yingjie Yao
- Key Lab of Etiology and Epidemiology, Education Bureau of Heilongjiang Province & Ministry of Health (23618504), Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin 150081, Heilongjiang Province, China
| | - Yongzheng Ma
- Key Lab of Etiology and Epidemiology, Education Bureau of Heilongjiang Province & Ministry of Health (23618504), Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin 150081, Heilongjiang Province, China
| | - Nan Zhong
- Key Lab of Etiology and Epidemiology, Education Bureau of Heilongjiang Province & Ministry of Health (23618504), Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin 150081, Heilongjiang Province, China
| | - Sowanou Alphonse
- Key Lab of Etiology and Epidemiology, Education Bureau of Heilongjiang Province & Ministry of Health (23618504), Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin 150081, Heilongjiang Province, China
| | - Junrui Pei
- Key Lab of Etiology and Epidemiology, Education Bureau of Heilongjiang Province & Ministry of Health (23618504), Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin 150081, Heilongjiang Province, 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] [What about the content of this article? (0)] [Affiliation(s)] [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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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. Int J Environ Res 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] [What about the content of this article? (0)] [Affiliation(s)] [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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10
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Aulestia FJ, Groeling J, Bomfim GHS, Costiniti V, Manikandan V, Chaloemtoem A, Concepcion AR, Li Y, Wagner LE, Idaghdour Y, Yule DI, Lacruz RS. Fluoride exposure alters Ca 2+ signaling and mitochondrial function in enamel cells. Sci Signal 2020; 13:eaay0086. [PMID: 32071168 PMCID: PMC7173621 DOI: 10.1126/scisignal.aay0086] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Fluoride ions are highly reactive, and their incorporation in forming dental enamel at low concentrations promotes mineralization. In contrast, excessive fluoride intake causes dental fluorosis, visually recognizable enamel defects that can increase the risk of caries. To investigate the molecular bases of dental fluorosis, we analyzed the effects of fluoride exposure in enamel cells to assess its impact on Ca2+ signaling. Primary enamel cells and an enamel cell line (LS8) exposed to fluoride showed decreased internal Ca2+ stores and store-operated Ca2+ entry (SOCE). RNA-sequencing analysis revealed changes in gene expression suggestive of endoplasmic reticulum (ER) stress in fluoride-treated LS8 cells. Fluoride exposure did not alter Ca2+ homeostasis or increase the expression of ER stress-associated genes in HEK-293 cells. In enamel cells, fluoride exposure affected the functioning of the ER-localized Ca2+ channel IP3R and the activity of the sarco-endoplasmic reticulum Ca2+-ATPase (SERCA) pump during Ca2+ refilling of the ER. Fluoride negatively affected mitochondrial respiration, elicited mitochondrial membrane depolarization, and disrupted mitochondrial morphology. Together, these data provide a potential mechanism underlying dental fluorosis.
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Affiliation(s)
- Francisco J Aulestia
- Department of Basic Science and Craniofacial Biology, New York University College of Dentistry, New York, NY 10010, USA
| | - Johnny Groeling
- Department of Basic Science and Craniofacial Biology, New York University College of Dentistry, New York, NY 10010, USA
| | - Guilherme H S Bomfim
- Department of Basic Science and Craniofacial Biology, New York University College of Dentistry, New York, NY 10010, USA
| | - Veronica Costiniti
- Department of Basic Science and Craniofacial Biology, New York University College of Dentistry, New York, NY 10010, USA
| | - Vinu Manikandan
- Biology Program, Division of Science and Mathematics, New York University Abu Dhabi, Abu Dhabi, United Arab Emirates
| | - Ariya Chaloemtoem
- Biology Program, Division of Science and Mathematics, New York University Abu Dhabi, Abu Dhabi, United Arab Emirates
| | - Axel R Concepcion
- Department of Pathology, New York University School of Medicine, New York, NY 10016, USA
| | - Yi Li
- Department of Basic Science and Craniofacial Biology, New York University College of Dentistry, New York, NY 10010, USA
| | - Larry E Wagner
- Department of Pharmacology and Physiology, University of Rochester, Rochester, NY 14526, USA
| | - Youssef Idaghdour
- Biology Program, Division of Science and Mathematics, New York University Abu Dhabi, Abu Dhabi, United Arab Emirates
| | - David I Yule
- Department of Pharmacology and Physiology, University of Rochester, Rochester, NY 14526, USA
| | - Rodrigo S Lacruz
- Department of Basic Science and Craniofacial Biology, New York University College of Dentistry, New York, NY 10010, USA.
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11
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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] [What about the content of this article? (0)] [Affiliation(s)] [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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12
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Zhou G, Yang L, Luo C, Liu H, Li P, Cui Y, Liu L, Yu X, Zeng Q, Chen J, Zhao Q, Dong L, Niu Q, Zhang S, Wang A. Low-to-moderate fluoride exposure, relative mitochondrial DNA levels, and dental fluorosis in Chinese children. Environ Int 2019; 127:70-77. [PMID: 30909095 DOI: 10.1016/j.envint.2019.03.033] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/04/2018] [Revised: 02/24/2019] [Accepted: 03/14/2019] [Indexed: 06/09/2023]
Abstract
BACKGROUND The alteration of mitochondrial DNA (mtDNA) content contributes to many diseases, however, little is known about its effect on the prevalence of dental fluorosis (DF). OBJECTIVES We conducted a cross-sectional study to investigate the association of low-to-moderate fluoride exposure with relative mtDNA levels in relation to DF in children. METHODS We recruited 616 resident children, aged 7-13 years, randomly from low-to-moderate fluoride areas in Tianjin, China. We measured the fluoride concentrations in drinking water and urine using the national standardized ion selective electrode method, and determined the relative levels of mtDNA using a quantitative real-time polymerase chain reaction assay. The association among fluoride exposure, relative mtDNA levels, and the prevalence of DF were examined using multivariable linear and logistic regression models. We also performed stratified and mediation analyses. RESULTS The relative mtDNA levels of participants in the DF group were significantly lower than in the non-DF group (0.95 ± 0.44 vs. 1.12 ± 0.45, P < 0.001). In the adjusted models, we found that a 1 mg/L increment in water fluoride concentration was associated with a 0.10-unit decrease in circulating relative mtDNA levels (95% CI: -0.14, -0.06) and a 2.85-fold increase (95% CI: 2.01, 3.92) in moderate DF prevalence. A 1 mg/L increment in urinary fluoride level was associated with a 0.12-unit decrease in circulating relative mtDNA levels (95% CI: -0.14, -0.09) and a 1.85-fold increase (95% CI: 1.39, 2.39) in moderate DF prevalence. Stratified analysis indicated a weaker positive association of DF prevalence with fluoride exposure, while a stronger inverse relationship with relative mtDNA levels in boys than in girls. Assuming causality, we estimated that circulating mtDNA levels mediated 13.0% (95% CI: 5.2, 28.7%) and 9.6% (95% CI: 4.7, 18.5%) of the estimated effect of a 1 mg/L increment in water fluoride and urinary fluoride on prevalence of moderate DF, respectively. CONCLUSIONS Gender potentially modifies the associations of DF prevalence with relative mtDNA levels and low-to-moderate fluoride exposure. The reduced circulating mtDNA levels may partly mediate the elevated prevalence of moderate DF in children under such exposure.
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Affiliation(s)
- Guoyu Zhou
- Department of Occupational and Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, People's Republic of China; Key Laboratory of Environment and Health, Ministry of Education and Ministry of Environmental Protection, State Key Laboratory of Environmental Health (incubating), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, People's Republic of China
| | - Lu Yang
- Department of Occupational and Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, People's Republic of China; Key Laboratory of Environment and Health, Ministry of Education and Ministry of Environmental Protection, State Key Laboratory of Environmental Health (incubating), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, People's Republic of China
| | - Chen Luo
- Department of Occupational and Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, People's Republic of China; Key Laboratory of Environment and Health, Ministry of Education and Ministry of Environmental Protection, State Key Laboratory of Environmental Health (incubating), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, People's Republic of China
| | - Hongliang Liu
- Tianjin Centers for Disease Control and Prevention, Tianjin, People's Republic of China
| | - Pei Li
- Department of Occupational and Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, People's Republic of China; Key Laboratory of Environment and Health, Ministry of Education and Ministry of Environmental Protection, State Key Laboratory of Environmental Health (incubating), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, People's Republic of China
| | - Yushan Cui
- Tianjin Centers for Disease Control and Prevention, Tianjin, People's Republic of China
| | - Li Liu
- Key Laboratory of Environment and Health, Ministry of Education and Ministry of Environmental Protection, State Key Laboratory of Environmental Health (incubating), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, People's Republic of China; Department of Epidemiology and Biostatistics, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, People's Republic of China
| | - Xingchen Yu
- Key Laboratory of Environment and Health, Ministry of Education and Ministry of Environmental Protection, State Key Laboratory of Environmental Health (incubating), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, People's Republic of China; Department of Epidemiology and Biostatistics, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, People's Republic of China
| | - Qiang Zeng
- Tianjin Centers for Disease Control and Prevention, Tianjin, People's Republic of China
| | - Jingwen Chen
- Department of Occupational and Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, People's Republic of China; Key Laboratory of Environment and Health, Ministry of Education and Ministry of Environmental Protection, State Key Laboratory of Environmental Health (incubating), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, People's Republic of China
| | - Qian Zhao
- Department of Occupational and Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, People's Republic of China; Key Laboratory of Environment and Health, Ministry of Education and Ministry of Environmental Protection, State Key Laboratory of Environmental Health (incubating), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, People's Republic of China
| | - Lixin Dong
- Department of Occupational and Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, People's Republic of China; Key Laboratory of Environment and Health, Ministry of Education and Ministry of Environmental Protection, State Key Laboratory of Environmental Health (incubating), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, People's Republic of China
| | - Qiang Niu
- Department of Occupational and Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, People's Republic of China; Key Laboratory of Environment and Health, Ministry of Education and Ministry of Environmental Protection, State Key Laboratory of Environmental Health (incubating), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, People's Republic of China
| | - Shun Zhang
- Department of Occupational and Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, People's Republic of China; Key Laboratory of Environment and Health, Ministry of Education and Ministry of Environmental Protection, State Key Laboratory of Environmental Health (incubating), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, People's Republic of China.
| | - Aiguo Wang
- Department of Occupational and Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, People's Republic of China; Key Laboratory of Environment and Health, Ministry of Education and Ministry of Environmental Protection, State Key Laboratory of Environmental Health (incubating), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, People's Republic of China.
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13
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Romualdo PC, Pucinelli CM, Tannure PN, Nelson-Filho P, Segato RAB, Brancher JA, Magalhães NL, Costa MDC, Antunes LAA, Antunes LS, Buzalaf MAR, Charone S, Küchler EC. Evaluation of genetic polymorphisms in MMP2, MMP9 and MMP20 in Brazilian children with dental fluorosis. Environ Toxicol Pharmacol 2019; 66:104-108. [PMID: 30639979 DOI: 10.1016/j.etap.2018.12.016] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/08/2018] [Revised: 12/19/2018] [Accepted: 12/20/2018] [Indexed: 06/09/2023]
Abstract
Recent studies suggested that genetics contribute to differences in dental fluorosis (DF) susceptibility among individuals having the same environmental exposure. This study evaluated if MMP2, MMP9 and MMP20 are expressed during enamel development and assessed the association between polymorphisms in these genes with DF. Mice susceptible and resistant to DF were used to evaluate if MMPs were candidate genes for DF. The animals received fluoride and their enamels were used for immunohistochemistry. Additionally, 481 subjects from a city with fluoridation of public water supplies were recruited. Genotyping was performed using real time PCR. Allele/genotype frequencies were compared between groups. MMP2, MMP9 and MMP20 immunostaining was detected in both animal groups. DF was observed in 22.4% of the subjects. A borderline association was observed in MMP2 (rs243865), MMP9 (rs17576) and in MMP20 (rs1784418) (p = 0.06, p = 0.08 and p = 0.06 respectively). Briefly, MMPs were expressed during enamel maturation and genetic polymorphisms were not associated with DF.
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Affiliation(s)
- Priscilla Coutinho Romualdo
- Department of Pediatric Dentistry, Ribeirão Preto Dental School, USP - University of São Paulo, Ribeirão Preto, SP, Brazil
| | - Carolina Maschietto Pucinelli
- Department of Pediatric Dentistry, Ribeirão Preto Dental School, USP - University of São Paulo, Ribeirão Preto, SP, Brazil
| | | | - Paulo Nelson-Filho
- Department of Pediatric Dentistry, Ribeirão Preto Dental School, USP - University of São Paulo, Ribeirão Preto, SP, Brazil
| | - Raquel Assed Bezerra Segato
- Department of Pediatric Dentistry, Ribeirão Preto Dental School, USP - University of São Paulo, Ribeirão Preto, SP, Brazil
| | | | - Nilza Letícia Magalhães
- Department of Pediatric Dentistry, Ribeirão Preto Dental School, USP - University of São Paulo, Ribeirão Preto, SP, Brazil
| | - Marcelo de Castro Costa
- Department of Pediatric Dentistry and Orthodontics, School of Dentistry, Federal University of Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | | | | | | | - Senda Charone
- Department of Biological Sciences, Bauru School of Dentistry, University of São Paulo, Brazil
| | - Erika Calvano Küchler
- Department of Pediatric Dentistry, Ribeirão Preto Dental School, USP - University of São Paulo, Ribeirão Preto, SP, Brazil.
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14
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Wu CX, Wang YH, Li Y, Guan ZZ, Qi XL. Changes of DNA repair gene methylation in blood of chronic fluorosis patients and rats. J Trace Elem Med Biol 2018; 50:223-228. [PMID: 30262283 DOI: 10.1016/j.jtemb.2018.07.010] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/24/2018] [Revised: 07/05/2018] [Accepted: 07/10/2018] [Indexed: 02/06/2023]
Abstract
To investigate the relationship between DNA repair gene methylation and chronic coal-burning fluorosis. The methylation rates of O6-methylguanine-DNA- methyltransferase gene MGMT, a DNA repair gene and mismatch repair gene MutL homolog 1 (MLH1) were analysed by methylation of specific PCR (MSP), and the levels of mRNA in the blood of the chronic fluorosis rats and the patients in the region of endemic coal-burning fluorosis were determined by real-time PCR. The levels of mRNA and protein of MGMT and MLH1 in the liver tissue of the chronic fluorosis rats were determined by real-time PCR and Western blot respectively. The results showed an increased methylation of the MGMT and MLH1 genes in the blood of the patients in the fluorosis region that correlated positively with the severity of fluorosis. The mRNA levels of MGMT and MLH1 genes from the patients in fluorosis region were lower than those of a control group, and also showed a positive correlation with the severity of fluorosis. Both the protein and mRNA levels of MGMT and MLH1 genes from the blood of rats and liver tissue in a fluoride-treated group were lower than those of a control non-fluoride treated group. These results indicate that the degree of methylation of MGMT and MLH1 genes is altered in fluorosis disease, the resulting changed expression of these repair genes may play a role in the liver damage caused by fluoride.
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Affiliation(s)
- Chang-Xue Wu
- Key Laboratory of Endemic and Ethnic Diseases (Guizhou Medical University), Ministry of Education, PR China; Key Laboratory of Medical Molecular Biology (Guizhou Medical University), Guiyang 550004, PR China
| | - Yi-Heng Wang
- Key Laboratory of Endemic and Ethnic Diseases (Guizhou Medical University), Ministry of Education, PR China; Key Laboratory of Medical Molecular Biology (Guizhou Medical University), Guiyang 550004, PR China
| | - Yi Li
- Key Laboratory of Endemic and Ethnic Diseases (Guizhou Medical University), Ministry of Education, PR China
| | - Zhi-Zhong Guan
- Key Laboratory of Endemic and Ethnic Diseases (Guizhou Medical University), Ministry of Education, PR China; Key Laboratory of Medical Molecular Biology (Guizhou Medical University), Guiyang 550004, PR China; Department of Pathology, Affiliated Hospital of Guizhou Medical University, Guiyang 550004, PR China.
| | - Xiao-Lan Qi
- Key Laboratory of Endemic and Ethnic Diseases (Guizhou Medical University), Ministry of Education, PR China; Key Laboratory of Medical Molecular Biology (Guizhou Medical University), Guiyang 550004, PR China.
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15
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Abstract
Fluorosis, caused by ingestion of excess fluoride, is endemic in at least 25 countries across the globe, China and India being the worst affected among them. Dental, skeletal and non-skeletal are the major types of fluorosis affecting millions of people in these countries. A number of genetic epidemiological studies carried out by investigators have shown the evidence for association between genetic polymorphisms in candidate genes and differences in the susceptibility pattern of different types of fluorosis among individuals living in the same community and having the same environmental exposure. These studies have pointed out that genetic variants in some candidate genes like COL1A2 (Collagen type 1 alpha 2), CTR (Calcitonin receptor gene), ESR (Estrogen receptor), COMT (Catechol-o-methyltransferase), GSTP1 (Glutathione S-transferase pi 1), MMP-2 (Matrix metallopeptidase 2), PRL (Prolactin), VDR (Vitamin D receptor) and MPO (Myeloperoxidase) could increase or decrease the risk of fluorosis among the exposed individuals in endemic areas. So, it is increasingly becoming evident that an individual's genetic background could play a major role in influencing the risk to fluorosis when other factors like specific environmental exposures including dietary patterns of fluoride intake and other nutrients remain the same. The current manuscript presents an up-to-date critical review on fluorosis, focusing mainly on the genetic association studies that have looked at the possible involvement of genetic factors in fluorosis.
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Affiliation(s)
- Sreemanta Pramanik
- Kolkata Zonal Centre, CSIR-National Environmental Engineering Research Institute, i-8 Sector-C, East Kolkata Area Development Project, Kolkata 700107, India.
| | - Depanwita Saha
- Kolkata Zonal Centre, CSIR-National Environmental Engineering Research Institute, i-8 Sector-C, East Kolkata Area Development Project, Kolkata 700107, India
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16
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Ma Q, Huang H, Sun L, Zhou T, Zhu J, Cheng X, Duan L, Li Z, Cui L, Ba Y. Gene-environment interaction: Does fluoride influence the reproductive hormones in male farmers modified by ERα gene polymorphisms? Chemosphere 2017; 188:525-531. [PMID: 28910727 DOI: 10.1016/j.chemosphere.2017.08.166] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/06/2017] [Revised: 08/25/2017] [Accepted: 08/30/2017] [Indexed: 06/07/2023]
Abstract
The occurrence of endemic fluorosis is derived from high fluoride levels in drinking water and industrial fumes or dust. Reproductive disruption is also a major harm caused by fluoride exposure besides dental and skeletal lesions. However, few studies focus on the mechanism of fluoride exposure on male reproductive function, especially the possible interaction of fluoride exposure and gene polymorphism on male reproductive hormones. Therefore, we conducted a cross-sectional study in rural areas of Henan province in China to explore the interaction between the estrogen receptor alpha (ERα) gene and fluoride exposure on reproductive hormone levels in male farmers living in the endemic fluorosis villages. The results showed that fluoride exposure significantly increased the serum level of estradiol in the hypothalamic-pituitary-testicular (HPT) axis in male farmers. Moreover, the observations indicated that fluoride exposure and genetic markers had an interaction on serum concentration of follicle-stimulating hormone and estradiol, and the interaction among different loci of the ERα gene could impact the serum testosterone level. Findings in the present work suggest that chronic fluoride exposure in drinking water could modulate the levels of reproductive hormones in males living in endemic fluorosis areas, and the interaction between fluoride exposure and ERα polymorphisms might affect the serum levels of hormones in the HPT axis in male farmers.
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Affiliation(s)
- Qiang Ma
- Department of Environmental Health, Zhengzhou University, Zhengzhou, Henan, 450001, China
| | - Hui Huang
- Department of Environmental Health, Zhengzhou University, Zhengzhou, Henan, 450001, China
| | - Long Sun
- Kaifeng Disease Control and Prevention Center, Kaifeng, Henan, 475004, China
| | - Tong Zhou
- Shandong Disease Control and Prevention Center, Jinan, Shandong, 250014, China
| | - Jingyuan Zhu
- Department of Environmental Health, Zhengzhou University, Zhengzhou, Henan, 450001, China
| | - Xuemin Cheng
- Department of Environmental Health, Zhengzhou University, Zhengzhou, Henan, 450001, China
| | - Lijv Duan
- Department of Environmental Health, Zhengzhou University, Zhengzhou, Henan, 450001, China
| | - Zhiyuan Li
- Department of Environmental Health, Zhengzhou University, Zhengzhou, Henan, 450001, China
| | - Liuxin Cui
- Department of Environmental Health, Zhengzhou University, Zhengzhou, Henan, 450001, China
| | - Yue Ba
- Department of Environmental Health, Zhengzhou University, Zhengzhou, Henan, 450001, China.
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Wu J, Wang W, Liu Y, Sun J, Ye Y, Li B, Liu X, Liu H, Sun Z, Li M, Cui J, Sun D, Yang Y, Gao Y. Modifying Role of GSTP1 Polymorphism on the Association between Tea Fluoride Exposure and the Brick-Tea Type Fluorosis. PLoS One 2015; 10:e0128280. [PMID: 26046522 PMCID: PMC4457801 DOI: 10.1371/journal.pone.0128280] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2014] [Accepted: 04/23/2015] [Indexed: 11/26/2022] Open
Abstract
Background Brick tea type fluorosis is a public health concern in the north-west area of China. The association between SNPs of genes influencing bone mass and fluorosis has attracted attention, but the association of SNPs with the risk of brick-tea type of fluorosis has not been reported. Objective To investigate the modifying roles of GSTP1 rs1695 polymorphisms on this association. Methods A cross-sectional study was conducted. Brick-tea water was tested by the standard of GB1996-2005 (China). Urinary fluoride was tested by the standard of WS/T 89-2006 (China). Skeletal fluorosis was diagnosed by X-ray, the part we scheduled was forearm, shank, and pelvic, then diagnosed the skeletal fluorosis by the standard of WS/192-2008 (China). Gene polymorphism was tested by Sequenom MassARRAY system. Result The prevalence rate in different ethnical participants was different: Tibetan individuals had the highest prevalence rate of skeletal fluorosis. There were significant differences in genotype frequencies of GSTP1 Rs1695 among different ethnical participants (p<0.001): Tibetan, Mongolian and Han subjects with homozygous wild type (GSTP1-AA) genotype were numerically higher than Kazakh and Russian subjects (p<0.001). Compared to Tibetan participants who carried homozygous A allele of GSTP1 Rs1695, Tibetan participants who carried G allele had a significantly decreased risk of skeletal fluorosis (OR = 0.558 [95% CI, 0.326-0.955]). For Kazakh participants, a decreased risk of skeletal fluorosis among carriers of the G allele was limited to non high-loaded fluoride status (OR = 0. 166 [95% CI, 0.035–0.780] vs. OR = 1.478 [95% CI, 0.866–2.552] in participants with high-loaded fluoride status). Neither SNP-IF nor SNP-age for GSTP1 Rs1695 was observed. Conclusion The prevalence rate of the brick tea type fluorosis might have ethnic difference. For Tibetan individuals, who had the highest prevalence rate, G allele of GSTP1 Rs1695 might be a protective factor for brick tea type skeletal fluorosis.
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Affiliation(s)
- Junhua Wu
- Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Key Lab of Etiology and Epidemiology, Education Bureau of Heilongjiang Province & Ministry of Health (23618504), Harbin 150081, Heilongjiang Province, China
| | - Wei Wang
- Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Key Lab of Etiology and Epidemiology, Education Bureau of Heilongjiang Province & Ministry of Health (23618504), Harbin 150081, Heilongjiang Province, China
| | - Yang Liu
- Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Key Lab of Etiology and Epidemiology, Education Bureau of Heilongjiang Province & Ministry of Health (23618504), Harbin 150081, Heilongjiang Province, China
| | - Jing Sun
- Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Key Lab of Etiology and Epidemiology, Education Bureau of Heilongjiang Province & Ministry of Health (23618504), Harbin 150081, Heilongjiang Province, China
| | - Yan Ye
- Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Key Lab of Etiology and Epidemiology, Education Bureau of Heilongjiang Province & Ministry of Health (23618504), Harbin 150081, Heilongjiang Province, China
| | - Bingyun Li
- Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Key Lab of Etiology and Epidemiology, Education Bureau of Heilongjiang Province & Ministry of Health (23618504), Harbin 150081, Heilongjiang Province, China
| | - Xiaona Liu
- Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Key Lab of Etiology and Epidemiology, Education Bureau of Heilongjiang Province & Ministry of Health (23618504), Harbin 150081, Heilongjiang Province, China
| | - Hongxu Liu
- Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Key Lab of Etiology and Epidemiology, Education Bureau of Heilongjiang Province & Ministry of Health (23618504), Harbin 150081, Heilongjiang Province, China
| | - Zhenqi Sun
- Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Key Lab of Etiology and Epidemiology, Education Bureau of Heilongjiang Province & Ministry of Health (23618504), Harbin 150081, Heilongjiang Province, China
| | - Mang Li
- Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Key Lab of Etiology and Epidemiology, Education Bureau of Heilongjiang Province & Ministry of Health (23618504), Harbin 150081, Heilongjiang Province, China
| | - Jing Cui
- Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Key Lab of Etiology and Epidemiology, Education Bureau of Heilongjiang Province & Ministry of Health (23618504), Harbin 150081, Heilongjiang Province, China
| | - Dianjun Sun
- Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Key Lab of Etiology and Epidemiology, Education Bureau of Heilongjiang Province & Ministry of Health (23618504), Harbin 150081, Heilongjiang Province, China
| | - Yanmei Yang
- Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Key Lab of Etiology and Epidemiology, Education Bureau of Heilongjiang Province & Ministry of Health (23618504), Harbin 150081, Heilongjiang Province, China
- * E-mail: (YY); (YG)
| | - Yanhui Gao
- Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Key Lab of Etiology and Epidemiology, Education Bureau of Heilongjiang Province & Ministry of Health (23618504), Harbin 150081, Heilongjiang Province, China
- * E-mail: (YY); (YG)
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Qin SL, Deng J, Lou DD, Yu WF, Pei J, Guan ZZ. The decreased expression of mitofusin-1 and increased fission-1 together with alterations in mitochondrial morphology in the kidney of rats with chronic fluorosis may involve elevated oxidative stress. J Trace Elem Med Biol 2015; 29:263-8. [PMID: 24958380 DOI: 10.1016/j.jtemb.2014.06.001] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/25/2014] [Revised: 05/26/2014] [Accepted: 06/02/2014] [Indexed: 01/29/2023]
Abstract
This study was designed to characterize changes in the expression of mitofusin-1 (Mfn1) and fission-1 (Fis1), as well as in mitochondrial morphology in the kidney of rats subjected to chronic fluorosis and to elucidate whether any mitochondrial injury observed is associated with increased oxidative stress. Sixty Sprague-Dawley (SD) rats were divided randomly into 3 groups of 20 each, i.e., the untreated control group (natural drinking water containing <0.5mg fluoride/L), the low-fluoride group (drinking water supplemented with 10mg fluoride/L, prepared with NaF) and the high-fluoride group (50mg fluoride/L), and treated for 6 months. Thereafter, renal expression of Mfn1 and Fis1 at both the protein and mRNA levels was determined by immunohistochemistry and real-time PCR, respectively. In addition, the malondiadehyde (MDA) was quantitated by the thiobarbituric acid procedure and the total antioxidative capability (T-AOC) by a colorimetric method. The morphology of renal mitochondria was observed under the transmission electron microscope. In the renal tissues of rats with chronic fluorosis, expression of both Mfn1 protein and mRNA was clearly reduced, whereas that of Fis1 was elevated. The level of MDA was increased and the T-AOC lowered. Swollen or fragmented mitochondria in renal cells were observed under the electronic microscope. These findings indicate that chronic fluorosis can lead to the abnormal mitochondrial dynamics and changed morphology in the rat kidney, which in mechanism might be induced by a high level of oxidative stress in the disease.
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Affiliation(s)
- Shuang-Li Qin
- Department of Pathology in the Affiliated Hospital, Guiyang Medical University, Guiyang 550004, PR China
| | - Jie Deng
- Key Laboratory of Molecular Biology, Guiyang Medical University, Guiyang 550004, PR China
| | - Di-Dong Lou
- Department of Pathology in the Affiliated Hospital, Guiyang Medical University, Guiyang 550004, PR China
| | - Wen-Feng Yu
- Key Laboratory of Molecular Biology, Guiyang Medical University, Guiyang 550004, PR China
| | - Jinjing Pei
- KI-Alzheimer Disease Research Center, Novum, Karolinska Institute, SE 14186 Huddinge, Sweden
| | - Zhi-Zhong Guan
- Department of Pathology in the Affiliated Hospital, Guiyang Medical University, Guiyang 550004, PR China; Key Laboratory of Molecular Biology, Guiyang Medical University, Guiyang 550004, PR China.
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Jiang M, Mu L, Wang Y, Yan W, Jiao Y. The relationship between Alu I polymorphisms in the calcitonin receptor gene and fluorosis endemic to Chongqing, China. Med Princ Pract 2015; 24:80-3. [PMID: 25402775 PMCID: PMC5588198 DOI: 10.1159/000368435] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/05/2013] [Accepted: 09/18/2014] [Indexed: 11/19/2022] Open
Abstract
OBJECTIVE This study explored the association between an Alu I polymorphism at position 1,377 of the calcitonin receptor (CTR) gene and endemic fluorosis. SUBJECTS AND METHODS A case-control study of 321 participants was conducted in regions with high fluorosis rates (Wushan and Fengjie counties) and those without high fluorosis rates (Yubei Qu county; termed nonfluorosis areas) in Chongqing, China. The participants were divided into three groups: the fluorosis group (FG) from areas with high fluoride exposure (121), the nonfluorosis group (NFG) from areas with high fluoride exposure (130), and a control group (CG) from areas with no excessive fluoride exposure (70). An Alu I polymorphism in the CTR gene was genotyped using polymerase chain reaction-restriction fragment length polymorphism analysis. RESULTS The genotype distributions within each group were as follows: CC 60.33% (73/121), CT 30.58% (37/121) and TT 9.09% (11/121) for the FG; CC 74.62% (97/130), CT 21.54% (28/130) and TT 3.85% (5/130) for the NFG, and CC 68.57% (48/70), CT 31.43% (22/70) and TT 0% (0/70) for the CG. Significant differences in Alu I genotypes were observed among the groups (χ(2) = 12.317, υ = 4, p = 0.015). Allele frequencies of CTR genotypes differed significantly among the groups (χ(2) = 8.859, υ = 2, p = 0.012): C 75.62% (183/242) and T 24.38% (59/242) for the FG, C 85.38% (222/260) and T 14.62% (38/260) for the NFG, and C 84.29% (118/140) and T 15.71% (22/140) for the CG. CONCLUSION An association between fluorosis and the Alu I polymorphism in the CTR gene was observed in fluoride-exposed populations.
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Affiliation(s)
- Miao Jiang
- Department of Epidemiology, Faculty of Public Health and Management, Chongqing, PR China
| | - Lihong Mu
- Department of Epidemiology, Faculty of Public Health and Management, Chongqing, PR China
- *Lihong Mu, Department of Epidemiology, Faculty of Public Health and Management, Chongqing Medical University, 1 Yi Xue Yuang Road, Yu Zhong District, Chongqing 400016 (PR China), E-Mail
| | - Yingxiong Wang
- Faculty of Basic Medical Sciences, Chongqing Medical University, Chongqing, PR China
| | - Wei Yan
- Institution of Endemic Disease Prevention, Center for Disease Control and Prevention in Chongqing, Chongqing, PR China
| | - Yongzhuo Jiao
- Department of Epidemiology, Faculty of Public Health and Management, Chongqing, PR China
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Wang Q, Cui KP, Xu YY, Gao YL, Zhao J, Li DS, Li XL, Huang HJ. Coal-burning endemic fluorosis is associated with reduced activity in antioxidative enzymes and Cu/Zn-SOD gene expression. Environ Geochem Health 2014; 36:107-115. [PMID: 23567976 DOI: 10.1007/s10653-013-9522-2] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/15/2012] [Accepted: 03/25/2013] [Indexed: 06/02/2023]
Abstract
To study the effect of fluorine on the oxidative stress in coal-burning fluorosis, we investigated the environmental characteristics of coal-burning endemic fluorosis combined with fluorine content surveillance in air, water, food, briquette, and clay binder samples from Bijie region, Guizhou Province, southwest of China. The activities of antioxidant enzymes including copper/zinc superoxide dismutase (Cu/Zn-SOD), catalase (CAT), glutathione peroxidase (GSH-Px), and level of lipid peroxidation such as malondialdehyde (MDA) were measured in serum samples obtained from subjects residing in the Bijie region. Expression of the Cu/Zn-SOD gene was assessed by quantitative reverse transcriptase PCR (qRT-PCR). Our results showed that people suffering from endemic fluorosis (the high and low exposure groups) had much higher MDA level. Their antioxidant enzyme activities and Cu/Zn-SOD gene expression levels were lower when compared to healthy people (the control group). Fluorosis can decrease the activities of antioxidant enzymes, which was associated with exposure level of fluorine. Down-regulation of Cu/Zn-SOD expression may play an important role in the aggravation of oxidative stress in endemic fluorosis.
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Affiliation(s)
- Qi Wang
- Department of Prevention Medicine, School of Public Health, Zunyi Medical College, Zunyi, 563003, People's Republic of China
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Zhang T, Shan KR, Tu X, He Y, Pei JJ, Guan ZZ. Myeloperoxidase activity and its corresponding mRNA expression as well as gene polymorphism in the population living in the coal-burning endemic fluorosis area in Guizhou of China. Biol Trace Elem Res 2013; 152:379-86. [PMID: 23436245 DOI: 10.1007/s12011-013-9632-9] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/07/2013] [Accepted: 02/11/2013] [Indexed: 11/27/2022]
Abstract
The myeloperoxidase (MPO) activity and its corresponding mRNA expression as well as gene polymorphism were investigated in the population who live in the endemic fluorosis area. In the study, 150 people were selected from the coal-burning endemic fluorosis area and 150 normal persons from the non-fluorosis area in Guizhou province of China. The blood samples were collected from these people. The activity of MPO in the plasma was determined by spectrophotometer; the expression of MPO mRNA was measured by employing real-time polymerase chain reaction; DNAs were extracted from the leucocytes in blood and five SNP genotypes of MPO promoter gene detected by a multiplex genotyping method, adapter-ligation-mediated allele-specific amplification. The results showed that the MPO activity and its corresponding mRNA in blood were significantly increased in the population living in the area of fluorosis. The different genotype frequencies of MPO, including -1228G/A, -585T/C, -463G/A, and -163C/T, and the three haplotypes with higher frequencies, including -163C-463G-585T-1228G-1276T, -163C-463G-585T-1228G-1276C, and -163C-463G-585T-1228A-1276T, were significantly associated with fluorosis. The results indicated that the elevated activity of MPO induced by endemic fluorosis may be connected in mechanism to the stimulated expression of MPO mRNA and the changed gene polymorphism.
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Affiliation(s)
- Ting Zhang
- Key Laboratory of Molecular Biology, Guiyang Medical College, Guiyang, People's Republic of China
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Carvalho JG, Leite ADL, Peres-Buzalaf C, Salvato F, Labate CA, Everett ET, Whitford GM, Buzalaf MAR. Renal proteome in mice with different susceptibilities to fluorosis. PLoS One 2013; 8:e53261. [PMID: 23308176 PMCID: PMC3537663 DOI: 10.1371/journal.pone.0053261] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2012] [Accepted: 11/27/2012] [Indexed: 11/19/2022] Open
Abstract
A/J and 129P3/J mouse strains have different susceptibilities to dental fluorosis due to their genetic backgrounds. They also differ with respect to several features of fluoride (F) metabolism and metabolic handling of water. This study was done to determine whether differences in F metabolism could be explained by diversities in the profile of protein expression in kidneys. Weanling, male A/J mice (susceptible to dental fluorosis, n = 18) and 129P3/J mice (resistant, n = 18) were housed in pairs and assigned to three groups given low-F food and drinking water containing 0, 10 or 50 ppm [F] for 7 weeks. Renal proteome profiles were examined using 2D-PAGE and LC-MS/MS. Quantitative intensity analysis detected between A/J and 129P3/J strains 122, 126 and 134 spots differentially expressed in the groups receiving 0, 10 and 50 ppmF, respectively. From these, 25, 30 and 32, respectively, were successfully identified. Most of the proteins were related to metabolic and cellular processes, followed by response to stimuli, development and regulation of cellular processes. In F-treated groups, PDZK-1, a protein involved in the regulation of renal tubular reabsorption capacity was down-modulated in the kidney of 129P3/J mice. A/J and 129P3/J mice exhibited 11 and 3 exclusive proteins, respectively, regardless of F exposure. In conclusion, proteomic analysis was able to identify proteins potentially involved in metabolic handling of F and water that are differentially expressed or even not expressed in the strains evaluated. This can contribute to understanding the molecular mechanisms underlying genetic susceptibility to dental fluorosis, by indicating key-proteins that should be better addressed in future studies.
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Affiliation(s)
- Juliane Guimarães Carvalho
- Department of Biological Sciences, Bauru Dental School, University of São Paulo, Bauru, São Paulo, Brazil
| | - Aline de Lima Leite
- Department of Biological Sciences, Bauru Dental School, University of São Paulo, Bauru, São Paulo, Brazil
| | - Camila Peres-Buzalaf
- Department of Biological Sciences, Bauru Dental School, University of São Paulo, Bauru, São Paulo, Brazil
| | - Fernanda Salvato
- Department of Genetics, Escola Superior de Agricultura “Luiz de Queiros”, University of São Paulo, Piracicaba, São Paulo, Brazil
| | - Carlos Alberto Labate
- Department of Genetics, Escola Superior de Agricultura “Luiz de Queiros”, University of São Paulo, Piracicaba, São Paulo, Brazil
| | - Eric T. Everett
- Department of Pediatric Dentistry, School of Dentistry, The Carolina Center for Genome Sciences, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, United States of America
| | - Gary Milton Whitford
- Department of Oral Biology, School of Dentistry, The Medical College of Georgia, Augusta, Georgia, United States of America
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Jiao YZ, Mu LH, Wang YX, An W, Jiang M. [Association between ameloblastin gene polymorphisms and the susceptibility to dental fluorosis]. Zhonghua Liu Xing Bing Xue Za Zhi 2013; 34:28-32. [PMID: 23648245] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
OBJECTIVE To study the distribution of ameloblastin (AMBN) gene polymorphism in coal-fire caused fluorosis (CFCF) in Chongqing municipality and the relationship between AMBN gene polymorphism and the susceptibility to dental fluorosis. METHODS Under a case-control study, 100 children aged 8 - 12 and 30 adults with dental fluorosis were enrolled in Wushan and Fengjie counties of Chongqing from December 2010 to February 2011. Another 100 children aged 8 - 12 and 30 adults with non-dental fluorosis were chosen as internal control groups together with 50 children and 30 adults without dental fluorosis were selected as external control groups in the non-epidemic area of Yubei district. DNA was extracted from peripheral blood sample of these people. Genotype of AMBN gene 7 extron 538_540delGGA, 10 extron 657A > G and 13 extron 986C > T loci were detected using the polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) technique. RESULTS The rates of 7 extron 538_540delGGA loci among case, internal and external control groups were as follows: GGA/GGA-/- 61.2% (74/121), 78.5% (102/130), 74.3% (52/70) ; GGA/-: 24.0% (29/121), 15.4% (20/130), 22.9% (16/70) ; -/-: 14.8% (18/121), 6.1% (8/130), 2.8% (2/70), the difference was statistically significant (χ(2) = 14.353 P < 0.05). The AA appeared to be 86.8% (105/121), 93.1% (121/130), 91.4% (64/70) and AG were 13.2% (16/121), 6.9% (9/130), 8.6% (6/70), with difference not statistically significant (χ(2) = 2.972, P > 0.05). CC appeared as 81.0% (98/121), 90.0% (117/130), 87.1% (61/70) while CT as 19.0% (23/121), 10.0% (13/130), 12.9% (9/70), with difference not statistically significant (χ(2) = 4.319, P > 0.05). In comparing with the two control groups, the frequency of GGA/GGA was decreasing (χ(2) values were 8.957, 3.405, respectively, P < 0.05) while the frequency of -/- was increasing (χ(2) values were 5.134, 6.833, respectively, P < 0.05). RESULTS from the univariate analysis showed that the individuals who were carrying -/- genotype had an increased risk of suffering from fluorosis (OR values were 2.7, 5.9, respectively, P < 0.05). When compared with the internal control group, the CT genotype of case group showed an increase (χ(2) = 4.139, P < 0.05) while individuals that carrying CT genotype had an increased risk of suffering from fluorosis (OR = 2.1, P < 0.05), in epidemic-area. CONCLUSION Our results showed that the 7 extron 538_540delGGA and the 13 extron 986C > T loci polymorphism in AMBN gene might serve as the susceptibility factors causing the coal-fired fluorosis.
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Affiliation(s)
- Yong-zhuo Jiao
- Department of Epidemiology, Chongqing Medical University, Chongqing, China
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Ba Y, Zhang H, Wang G, Wen S, Yang Y, Zhu J, Ren L, Yang R, Zhu C, Li H, Cheng X, Cui L. Association of dental fluorosis with polymorphisms of estrogen receptor gene in Chinese children. Biol Trace Elem Res 2011; 143:87-96. [PMID: 20852966 DOI: 10.1007/s12011-010-8848-1] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/27/2010] [Accepted: 09/06/2010] [Indexed: 10/19/2022]
Abstract
Dental fluorosis (DF) is one of the important performances of endemic fluorosis. Some studies indicated that estrogen receptor (ESR) gene polymorphisms were associated with bone metabolism-related diseases. Therefore, it is possible that the variation in ESR genotypes will be associated with DF status. A case-control study was conducted among children aged 8-12 years with (n = 75) or without (n = 165) DF in China to investigate the relationship between ESR gene polymorphisms and DF. Gene polymorphisms were genotyped using the PCR-RFLP procedure. Children carrying R allele of ER RsaI had significantly increased risk of DF (Odds ratio (OR) = 1.821; 95% confidence interval (CI), 1.013-3.274) compared to children carrying r allele of ER RsaI in endemic fluorosis villages. For children with high-loaded fluoride status, carrying X allele of ESRα XbaI had a significantly decreased risk of DF (OR = 0.542; 95% CI, 0.314-0.936) compared to carrying x allele. This study provides the first evidence of an association between polymorphisms in the ESR gene with DF in high-fluoride-exposed populations. Further studies are needed to confirm the association.
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Affiliation(s)
- Yue Ba
- Department of Environmental Health, Zhengzhou University School of Public Health, 100 Science Road, Zhengzhou, Henan 450001, People's Republic of China.
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Ba Y, Huang H, Yang Y, Cui L, Zhu J, Zhu C, Liu J, Zhang Y. The association between osteocalcin gene polymorphism and dental fluorosis among children exposed to fluoride in People's Republic of China. Ecotoxicol Environ Saf 2009; 72:2158-2161. [PMID: 19767102 DOI: 10.1016/j.ecoenv.2009.08.014] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/06/2009] [Revised: 05/05/2009] [Accepted: 08/29/2009] [Indexed: 05/28/2023]
Abstract
Excessive fluoride intake has been shown to affect dentin and cementum mineralization throughout life. Some studies indicated that a HindIII polymorphism, of osteocalcin (OC) gene, was associated with bone metabolism-related diseases. Therefore, it is possible that the variation in OC genotypes will be associated with dental fluorosis (DF) status and/or serum caciotropic hormone level. A case-control study was conducted among children aged 8-12 years in Henan Province, PR China to investigate the association between dental fluorosis, serum calciotropic hormone level, and polymorphisms in the OC gene. HindIII polymorphism in OC gene was genotyped using the PCR-RFLP procedure. OC and calcitonin (CT) level in serum was detected using radioimmunoassay. No significant difference was observed for OC HindIII genotypes among the cases with dental fluorosis, the controls from endemic fluorosis area (EFA) and the controls from non-endemic fluorosis area (NEFA). A significant negative correlation was observed between serum calcium and OC level. No significant relationship was found between OC HindIII polymorphisms and the level of OC and CT. In conclusion, OC HindIII polymorphisms may not be a useful genetic marker for differential risk of dental fluorosis among children in PR China.
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Affiliation(s)
- Yue Ba
- Department of Environmental Health, School of Public Health, Zhengzhou University, Zhengzhou, Henan 450001, PR China.
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Ba Y, Li HX, Yin GJ, Wu WH, Yu B, Cheng XM, Cui LX. [Study on the relationship between ER Rsa I gene polymorphism and children's dental fluorosis]. Sichuan Da Xue Xue Bao Yi Xue Ban 2009; 40:869-872. [PMID: 19950602] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
OBJECTIVE To explore the distribution of ER Rsa I genotype in children who lived in the areas with or without high fluoride, and evaluate the relationship between ER Rsa I gene polymorphism and children's dental fluorosis. METHODS Children aged 8 to 12 years, born and raised in high fluoride areas and control areas in two counties of Henan Province were recruited. The Rsa I marker of ER gene was genotyped in 237 children composed of both dental fluorosis cases and controls by PCR-RFLP procedure. Urine fluoride was detected with fluoride ion selective electrode method. RESULTS The frequency distribution of ER Rsa I genotype was rr 60.81% (45/74), Rr 27.02% (20/74), RR 12.16% (9/74) in children with fluorosis; rr 73.91% (51/69), Rr 20.29% (14/69), RR 5.80% (4/69) in children without fluorosis from high fluoride areas, and rr 63.83% (60/94), Rr 34.04% (32/94), RR 2.13% (2/94) in the children without fluorosis from control areas respectively. There were no significant differences in the three groups (P>0.05), but children carrying allele R of ER Rsa I had a significantly increased risk of dental fluorosis (OR=1.821, 95% CI: 1.013-3.274) compared to children carrying the allele r in endemic fluorosis areas. CONCLUSION Although no significant difference was found in ER Rsa I genotype between cases and non-dental fluorosis in endemic fluorosis areas, children carrying R allele of ER Rsa I had a higher risk compared to children carrying r allele, and the further study is needed.
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Affiliation(s)
- Yue Ba
- Department of Environmental Health, Zhengzhou University School of Public Health, Zhengzhou, China
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Hou GQ, Liu JL, Yu YY, Xia T. [Screening of environmental response genes related to dental fluorosis]. Wei Sheng Yan Jiu 2005; 34:543-6. [PMID: 16329592] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
OBJECTIVE To screen environmental response genes related to dental fluorosis, and to provide clues for further researches of the molecular mechanism of fluorosis. METHODS The leukocyte gene expression profiles of control group, high-loaded fluoride group and dental fluorosis group were tested using the gene chiR HG-U133A from Affymetrix company. The results were analyzed by bioinformatical methods. RESULTS Compared with control group, a total of 1057 genes were differentially expressed in high-loaded fluoride group. Of these, 148 were robustly up-regulated and 61 were robustly down-regulated. A total of 964 genes were differentially expressed in dental fluorosis group as compared with control group, including 71 robustly up-regulated genes and 60 robustly down-regulated genes. Compared with high-loaded fluoride group, 633 genes were identified to be differentially expressed in dental fluorosis group. Of these, the number of robustly up-regulated genes and robustly down-regulated genes were respectively 15 and 67. CONCLUSION Multiple genes are related to fluorosis.
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Affiliation(s)
- Guo-Qiang Hou
- Henan Centers for Disease Control and Prevention, Zhengzhou 450000, China
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Vieira APGF, Hanocock R, Eggertsson H, Everett ET, Grynpas MD. Tooth quality in dental fluorosis genetic and environmental factors. Calcif Tissue Int 2005; 76:17-25. [PMID: 15477997 DOI: 10.1007/s00223-004-0075-3] [Citation(s) in RCA: 48] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/19/2004] [Accepted: 07/20/2004] [Indexed: 01/14/2023]
Abstract
Dental fluorosis (DF) affects the appearance and structure of tooth enamel and can occur following ingestion of excess fluoride during critical periods of amelogenesis. This tooth malformation may, depending on its severity, influence enamel and dentin microhardness and dentin mineralization. Poor correlation between tooth fluoride (F) concentration and DF severity was shown in some studies, but even when a correlation was present, tooth fluoride concentration explained very little of DF severity. This fact calls into question the generally accepted hypothesis that the main factor responsible for DF severity is tooth fluoride concentration. It has been shown previously that genetic factors (susceptibility to DF) play an important role in DF severity although DF severity relates to individual susceptibility to fluoride exposure (genetics), tooth fluoride concentration relates to fluoride ingestion (environmental). The objective of this study was to investigate the correlation between tooth fluoride concentration, DF severity, and tooth mechanical and materials properties. Three strains of mice (previously shown to have different susceptibility to DF) at weaning were treated with four different levels of F in their water (0, 25, 50, and 100 ppm) for 6 weeks. Mice teeth were tested for fluoride by instrumental neutron activation analysis (INAA), DF severity determined by quantitative light-induced fluorescence [QLF], and tooth quality (enamel and dentin microhardness and dentin mineralization). Tooth fluoride concentration (environment factor) correlated positively with DF severity (QLF) (rs=0.608), fluoride treatment group (rs=0.952). However, tooth fluoride concentration correlated negatively with enamel microhardness (rs=-0.587), dentin microhardness (rs=-0.268) and dentin mineralization (rs=-0.245). Dental fluorosis (genetic factor) severity (QLF) correlated positively with fluoride treatment (rs=0.608) and tooth fluoride concentration (rs=0.583). DF severity correlated negatively with enamel microhardness (rs=-0.564) and dentin microhardness (rs=-0.356). Genetic factors (DF severity) and the environmental factor (fluoride concentration in tooth structure) have similar influence on tooth biomechanical properties, whereas only the environmental factor has an influence on tooth material property (mineralization).
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Affiliation(s)
- A P G F Vieira
- Faculty of Dentistry, University of Toronto, 124 Edward St., Toronto-ON, Canada M5G 1G6
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Everett ET, McHenry MAK, Reynolds N, Eggertsson H, Sullivan J, Kantmann C, Martinez-Mier EA, Warrick JM, Stookey GK. Dental fluorosis: variability among different inbred mouse strains. J Dent Res 2002; 81:794-8. [PMID: 12407097 DOI: 10.1177/0810794] [Citation(s) in RCA: 80] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Concurrent with the decline in dental caries has been an increase in the prevalence of dental fluorosis, a side-effect of exposure to greater than optimal levels of fluoride during amelogenesis. The mechanisms that underlie the pathogenesis of dental fluorosis are not known. We hypothesize that genetic determinants influence an individual's susceptibility or resistance to develop dental fluorosis. We tested this hypothesis using a mouse model system (continuous eruption of the incisors) where genotype, age, gender, food, housing, and drinking water fluoride level can be rigorously controlled. Examination of 12 inbred strains of mice showed differences in dental fluorosis susceptibility/resistance. The A/J mouse strain is highly susceptible, with a rapid onset and severe development of dental fluorosis compared with that in the other strains tested, whereas the 129P3/J mouse strain is least affected, with minimal dental fluorosis. These observations support the contribution of a genetic component in the pathogenesis of dental fluorosis.
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Affiliation(s)
- E T Everett
- Oral-Facial Genetics Division, Department of Oral Facial Development, Indiana University School of Dentistry, Indianapolis 46202, USA.
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Abstract
A retrospective study of 32 children (mean age 10.3 years) attending the Children's Department, Eastman Dental Hospital with enamel opacities resembling dental fluorosis in the majority showed that these changes were probably genetically determined and had a close association with taurodontism of permanent molar teeth. It seems likely that these enamel defects should be classified as hypomaturation types of amelogenesis imperfecta (AI) conveyed by mutant auto-somal genes. The clinical expression (phenotype) of these mutant genes has a greater heterogeneity than previously described.
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Affiliation(s)
- G B Winter
- Department of Children's Dentistry, Eastman Dental Institute, Eastman Dental Hospital, London
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Valova GA, Polzik EV, Zinger VE, Shcherbakov SV. [Dermatoglyphic indices in assessing the predisposition to occupational fluorosis]. Tsitol Genet 1994; 28:56-9. [PMID: 7974785] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Dermatoglyphic investigations which prove the existence of genetic predisposition to occupational fluorosis in workers of aluminum and criolite plants were carried out. Mathematical methods of pattern recognition were used for the multifactorial analysis. It was found that the complex analysis of ten the most informative dermatoglyphic parameters permits to prognosticate a genetically determined risk of this occupational disease.
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Abstract
The Rieger syndrome is a rare, autosomal dominant disorder. It is characterized by defects of the anterior chamber of the eyes as well as developmental malformations of the dentition. A case is described that shows classic findings with emphasis on dental management. Oral abnormalities in the pedigree may also suggest subtle manifestations of the syndrome. Recognition of the dental anomalies may result in early diagnosis of the syndrome and prevent progressive visual loss.
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