1
|
Arakeri G, Rao Us V, Patil S, Kunigal S, Reddy R, Krishnan M, Hale B, Brennan PA. Evaluation of possible role of fluoride in pathogenesis of oral submucous fibrosis: A pilot study. J Oral Pathol Med 2024; 53:226-231. [PMID: 38417414 DOI: 10.1111/jop.13527] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2023] [Accepted: 02/16/2024] [Indexed: 03/01/2024]
Abstract
BACKGROUND Oral submucous fibrosis (OSMF) is a potentially malignant disorder. Although areca nut chewing is an established risk factor, its low prevalence among nut chewers indicates additional factors likely facilitates pathogenesis. We recently demonstrated high fluoride levels in smokeless tobacco products and hypothesized a potential pathological role of fluoride in OSMF. Further exploring this novel role, this study compared fluoride levels in tissue, serum, and saliva samples from OSMF patients and healthy controls. METHODS The ethically approved study included 25 clinically confirmed OSMF patients and 25 healthy matched controls. OSMF cases underwent buccal mucosal incisional biopsy, while controls had buccal mucosa tissue sampling during third molar removal. Fasting venous blood and unstimulated saliva were collected. Fluoride levels were analysed using ion chromatography and expressed as median (IQR). RESULTS OSMF cases showed significantly higher fluoride concentrations compared with controls in tissue biopsies (30.1 vs. 0 mg/kg, p < 0.0001), serum (0.4 vs. 0 mg/L, p = 0.005) and saliva (1.3 vs. 0 mg/L, p < 0.0001). Majority (68%) of controls had undetectable fluoride levels across all samples. Tissue fluoride weakly correlated with OSMF severity (r = -0.158, p = 0.334). CONCLUSION The preliminary findings demonstrated increased tissue fluoride levels in OSMF patients compared with healthy controls. Along with a previous study showing high fluoride content in smokeless tobacco products, these findings provided early evidence suggesting fluoride could play a contributory role in OSMF pathogenesis. Further large-scale investigation is warranted to definitively establish whether the association between fluoride exposure and OSMF is indicative of causation.
Collapse
Affiliation(s)
- Gururaj Arakeri
- Department of Head and Neck Oncology, HCG Cancer Hospital, Bengaluru, India
- Department of Oral and Maxillofacial Surgery, Saveetha Dental College and Hospital, Chennai, India
- Department of Oral and Maxillofacial Surgery, HKDET Dental College and Hospital, Humnabad, India
| | - Vishal Rao Us
- Department of Head and Neck Oncology, HCG Cancer Hospital, Bengaluru, India
| | - Shekar Patil
- Department of Medical Oncology, HCG Cancer Hospital, Bengaluru, India
| | - Sateesh Kunigal
- Department of Head and Neck Oncology, HCG Cancer Hospital, Bengaluru, India
| | - Roopa Reddy
- Center for Incubation, Innovation, Research and Consultancy (CIIRC), Jyothy Institute of Technology, Bengaluru, India
| | - Murugesan Krishnan
- Department of Oral and Maxillofacial Surgery, Saveetha Dental College and Hospital, Chennai, India
| | - Beverley Hale
- Institute of Allied Sciences, University of Chichester, Chichester, UK
| | - Peter A Brennan
- Department of Oral & Maxillofacial Surgery, Queen Alexandra Hospital, Portsmouth, UK
| |
Collapse
|
2
|
Tuomivaara ST, Goin DE, Fisher SJ, Hall SC, Mattis AN, Den Besten PK. Fluoride-related changes in the fetal cord blood proteome; a pilot study. RESEARCH SQUARE 2024:rs.3.rs-3995767. [PMID: 38464284 PMCID: PMC10925477 DOI: 10.21203/rs.3.rs-3995767/v1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/12/2024]
Abstract
Background Fluoride exposure during pregnancy has been associated with various effects on offspring, including changes in behavior and IQ. To provide clues to possible mechanisms by which fluoride affects human fetal development, we completed proteomic analyses of cord blood serum collected from second-trimester pregnant women residing in Northern California with either high or low fluoride exposure, as identified by maternal serum fluoride concentrations. Objective To identify changes in cord blood proteins associated with maternal serum fluoride concentration in pregnant women living in Northern California. Methods The proteomes of 19 archived second-trimester cord blood samples representing highest and lowest serum fluoride concentrations from a cohort of 48 women living in Northern California, previously analyzed for serum, urine and amniotic fluoride concentrations, were characterized by mass spectrometry. Proteins highly correlated to maternal serum fluoride concentrations were identified, and further compared in a group of samples from women with the highest serum fluoride to the group with the lowest maternal serum fluoride concentrations. Results Nine cord blood proteins were significantly correlated with maternal serum fluoride concentrations. Six of these proteins, including apolipoprotein B-100, delta homolog 1, coagulation factor X, mimecan, plasma kallikrein, and vasorin, were significantly decreased in the cord blood from women with the highest serum fluoride levels. Conclusion Changes in the relative amounts of second trimester cord blood proteins included proteins associated with the development of the fetal hematopoetic system.
Collapse
Affiliation(s)
| | - Dana E Goin
- University of California, San Francisco San Francisco
| | | | - Steven C Hall
- University of California, San Francisco San Francisco
| | - Aras N Mattis
- University of California, San Francisco San Francisco
| | | |
Collapse
|
3
|
Arakeri G, Vishal Rao US, Patil S, Patil S, Krishnamurthy MVSR, Krishnan M, Brennan PA. Evaluation of fluoride levels in areca nut, tobacco, and commercial smokeless tobacco products: a pilot study. Br J Oral Maxillofac Surg 2024; 62:76-82. [PMID: 38092568 DOI: 10.1016/j.bjoms.2023.11.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2023] [Accepted: 11/10/2023] [Indexed: 01/16/2024]
Abstract
Oral submucous fibrosis (OSMF) is a premalignant condition associated with chewing areca nut and tobacco products. We observed increased fluoride levels in some OSMF-endemic regions,and the observation suggested that fluoride exposure may contribute to its pathogenesis. This study aimed to assess the fluoride content of various smokeless tobacco items as a potential influencing source. Fluoride concentration was analysed in commercial areca nut products, including gutkha, pan masala, and raw areca nut, along with tobacco, slaked lime, and catechu samples from Karnataka, India. Fluoride was measured using alkali fusion and the ion selective electrode method. All products showed high fluoride, with catechu having the highest mean concentration at 51.20 mg/kg, followed by tobacco, gutkha, pan masala, processed areca nut, and raw areca nut. Fluoride was also elevated in soil, but not in water. The findings demonstrate substantial fluoride levels in popular types of smokeless tobacco, and highlight an overlooked source of exposure among consumers of gutkha, pan masala and similar oral tobacco-products. The fluoride content warrants an investigation of potential links with the occurrence and severity of OSMF.
Collapse
Affiliation(s)
- Gururaj Arakeri
- Department of Head and Neck Oncology, Health Care Global (HCG) Cancer Centre, Bengaluru, India; Department of Oral and maxillofacial Surgery, Saveetha Dental College and Hospital, Chennai, India; Department of Oral and maxillofacial Surgery, HKDET Dental College and Hospital, Humnabad, Karnataka, India.
| | - U S Vishal Rao
- Department of Head and Neck Oncology, Health Care Global (HCG) Cancer Centre, Bengaluru, India
| | - Shekar Patil
- Department of Medical Oncology, Health Care Global (HCG) Cancer Centre, Bengaluru, India
| | - Shankargouda Patil
- College of Dental Medicine, Roseman University of Health Sciences, South Jordan, Utah, USA
| | - M V S R Krishnamurthy
- Department of Rural Water Supply and Sanitation, State Level Water Testing Laboratory, Vijayawada, Andhra Pradesh, India
| | - Murugesan Krishnan
- Department of Oral and maxillofacial Surgery, Saveetha Dental College and Hospital, Chennai, India
| | - Peter A Brennan
- Department of Oral & Maxillofacial Surgery, Queen Alexandra Hospital, Portsmouth, UK
| |
Collapse
|
4
|
Guo M, Afrim FK, Li Z, Li N, Fu X, Ding L, Feng Z, Yang S, Huang H, Yu F, Zhou G, Ba Y. Association between fluoride exposure and blood pressure in children and adolescents aged 6 to19 years in the United States: NHANES, 2013-2016. INTERNATIONAL JOURNAL OF ENVIRONMENTAL HEALTH RESEARCH 2023; 33:541-551. [PMID: 35168424 DOI: 10.1080/09603123.2022.2040449] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
To examine the association between fluoride exposure and childhood blood pressure (BP), we used data involving 3260 subjects participating in the National Health and Nutrition Examination Survey (NHANES) from 2013 to 2016. Both plasma and water fluoride concentrations were measured using the ion-specific electrode. Outcome variables were systolic blood pressure (SBP) and diastolic blood pressure (DBP). For a 1-mg/L increase in water fluoride concentration, the participants' SBP decreased by 0.473 mm Hg (95% CI: -0.860, -0.087). Specifically, inverse associations were found between water fluoride and SBP in girls (β= -0.423, 95% CI: -0.886, -0.021), adolescents (β= -0.623, 95% CI: -0.975, -0.272), and non-Hispanic whites (β= -0.694, 95% CI: -1.237, -0.151). Also, every 1-μmol/L increase in plasma fluoride concentration was associated with a 1.183 mm Hg decrease in SBP among other races (95% CI: -2.258, -0.108). This study suggested that fluoride exposure may affect childhood blood pressure.
Collapse
Affiliation(s)
- Meng Guo
- Department of Environmental Health & Environment and Health Innovation Team, School of Public Health, Zhengzhou University, Zhengzhou, Henan, China
| | - Francis-Kojo Afrim
- Department of Environmental Health & Environment and Health Innovation Team, School of Public Health, Zhengzhou University, Zhengzhou, Henan, China
| | - Zhiyuan Li
- Department of Environmental Health & Environment and Health Innovation Team, School of Public Health, Zhengzhou University, Zhengzhou, Henan, China
| | - Na Li
- Dietary Center, Zhengzhou Health Vocational College, Zhengzhou, Henan, China
| | - Xiaoli Fu
- Department of Environmental Health & Environment and Health Innovation Team, School of Public Health, Zhengzhou University, Zhengzhou, Henan, China
| | - Limin Ding
- Department of Environmental Health & Environment and Health Innovation Team, School of Public Health, Zhengzhou University, Zhengzhou, Henan, China
| | - Zichen Feng
- Department of Environmental Health & Environment and Health Innovation Team, School of Public Health, Zhengzhou University, Zhengzhou, Henan, China
| | - Shuo Yang
- Department of Environmental Health & Environment and Health Innovation Team, School of Public Health, Zhengzhou University, Zhengzhou, Henan, China
| | - Hui Huang
- Department of Environmental Health & Environment and Health Innovation Team, School of Public Health, Zhengzhou University, Zhengzhou, Henan, China
| | - Fangfang Yu
- Department of Environmental Health & Environment and Health Innovation Team, School of Public Health, Zhengzhou University, Zhengzhou, Henan, China
| | - Guoyu Zhou
- Department of Environmental Health & Environment and Health Innovation Team, School of Public Health, Zhengzhou University, Zhengzhou, Henan, China
| | - Yue Ba
- Department of Environmental Health & Environment and Health Innovation Team, School of Public Health, Zhengzhou University, Zhengzhou, Henan, China
| |
Collapse
|
5
|
Muthu Prabhu S, Yusuf M, Ahn Y, Park HB, Choi J, Amin MA, Yadav KK, Jeon BH. Fluoride occurrence in environment, regulations, and remediation methods for soil: A comprehensive review. CHEMOSPHERE 2023; 324:138334. [PMID: 36893864 DOI: 10.1016/j.chemosphere.2023.138334] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/19/2023] [Revised: 03/04/2023] [Accepted: 03/06/2023] [Indexed: 06/18/2023]
Abstract
Fluoride, a naturally occurring chemical element, is largely insoluble in soils. More than 90% of the fluoride in soil is bound to soil particles and is unable to be dissolved. As part of the soil, fluoride is predominantly located in the colloid or clay fraction of the soil, and the movement of fluoride is strongly affected by the sorption capacity of the soil, which is affected by pH, the type of soil sorbent present, and the salinity. The Canadian Council of Ministers of the Environment soil quality guideline for fluoride in soils under a residential/parkland land use scenario is 400 mg/kg. In this review, we focus on fluoride contamination in soil and subsurface environments, and the various sources of fluorides are discussed in detail. The average fluoride concentration in soil in different countries and their regulations for soil and water are comprehensively reviewed. In this article, the latest advances in defluoridation methods are highlighted and the importance of further research addressing efficient and cost-effective methods to remediate fluoride contamination in soil is critically discussed. Methods used to mitigate fluoride risks by removing fluoride from the soil are presented. We strongly recommend that regulators and soil chemists in all countries explore opportunities to improve defluoridation methods and consider adopting more stringent regulations for fluoride in soil depending on geologic conditions.
Collapse
Affiliation(s)
- Subbaiah Muthu Prabhu
- Department of Earth Resources and Environmental Engineering, Hanyang University, Seoul, 04763, Republic of Korea; Department of Chemistry, School of Advanced Sciences, VIT-AP University, Vijayawada, 522 237, Andhra Pradesh, India
| | - Mohammed Yusuf
- Department of Earth Resources and Environmental Engineering, Hanyang University, Seoul, 04763, Republic of Korea
| | - Yongtae Ahn
- Department of Earth Resources and Environmental Engineering, Hanyang University, Seoul, 04763, Republic of Korea.
| | - Ho Bum Park
- Department of Energy Engineering, Hanyang University, Seoul, 04763, Republic of Korea
| | - Jaeyoung Choi
- Center for Environment, Health and Welfare Research, Korea Institute of Science and Technology, Hwarang-ro 14, Seongbuk-gu, Seoul, 02792, Republic of Korea
| | - Mohammed A Amin
- Department of Chemistry, College of Science, Taif University, P.O. Box 11099, Taif, 21944, Saudi Arabia
| | - Krishna Kumar Yadav
- Faculty of Science and Technology, Madhyanchal Professional University, Tatibad, Bhopal, 462044, India
| | - Byong-Hun Jeon
- Department of Earth Resources and Environmental Engineering, Hanyang University, Seoul, 04763, Republic of Korea.
| |
Collapse
|
6
|
Sun H, Wen B, Wu Z, Xing A, Xu X, Chang Y, Guo G, Wang Y. The performance of water-soluble fluoride transformation in soil-tea-tea infusion chain system and the potential health risk assessment. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2022; 102:2893-2902. [PMID: 34755346 DOI: 10.1002/jsfa.11630] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/06/2020] [Revised: 10/26/2021] [Accepted: 11/09/2021] [Indexed: 06/13/2023]
Abstract
BACKGROUND Water-soluble fluoride (WS-F) can be absorbed directly by tea plants from soil and comprises a major source of dietary F in tea consumers. To reveal the WS-F accumulation in tea leaves and assess WS-F health risks, 70 sets of samples including tea leaves at three maturity stages and corresponding topsoil were collected from Xinyang, China. The WS-F contents in tea samples and pH values in soil samples were determined. RESULTS The contents of WS-F in tea leaves exhibited a positive correlation with leaf maturity. The contents of WS-F in tea leaves showed a positive correlation with WS-F contents in the soil as the soil pH value exceeds 5. All the bud with two leaves samples, 84.29% of the third to sixth leaves samples, and 78.57% mature leaves samples in 5-min infusion tend to be no health threat. The leaching characteristics of WS-F from tea leaves were influenced by the leaf maturity and soaking time. CONCLUSION Taking measures to control pH and WS-F concentration of plantations soil, as well as drinking tea infusion made from young leaves or reducing soaking time could decrease the WS-F health risk. © 2021 Society of Chemical Industry.
Collapse
Affiliation(s)
- Hua Sun
- College of Horticulture, Nanjing Agricultural University, Nanjing, P. R. China
| | - Bo Wen
- College of Landscape Architecture, Nanjing Forestry University, Nanjing, P. R. China
| | - Zichen Wu
- College of Horticulture, Nanjing Agricultural University, Nanjing, P. R. China
| | - Anqi Xing
- College of Horticulture, Nanjing Agricultural University, Nanjing, P. R. China
| | - Xiaohan Xu
- College of Horticulture, Nanjing Agricultural University, Nanjing, P. R. China
| | - Yali Chang
- Henan Key Laboratory of Tea Plant Comprehensive Utilization in South Henan, Xinyang Agriculture and Forestry University, Xinyang, P. R. China
| | - Guiyi Guo
- Henan Key Laboratory of Tea Plant Comprehensive Utilization in South Henan, Xinyang Agriculture and Forestry University, Xinyang, P. R. China
| | - Yuhua Wang
- College of Horticulture, Nanjing Agricultural University, Nanjing, P. R. China
| |
Collapse
|
7
|
Bioaccumulation of Fluoride in Plants and Its Microbially Assisted Remediation: A Review of Biological Processes and Technological Performance. Processes (Basel) 2021. [DOI: 10.3390/pr9122154] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023] Open
Abstract
Fluoride is widely found in soil–water systems due to anthropogenic and geogenic activities that affect millions worldwide. Fluoride ingestion results in chronic and acute toxicity, including skeletal and dental fluorosis, neurological damage, and bone softening in humans. Therefore, this review paper summarizes biological processes for fluoride remediation, i.e., bioaccumulation in plants and microbially assisted systems. Bioremediation approaches for fluoride removal have recently gained prominence in removing fluoride ions. Plants are vulnerable to fluoride accumulation in soil, and their growth and development can be negatively affected, even with low fluoride content in the soil. The microbial bioremediation processes involve bioaccumulation, biotransformation, and biosorption. Bacterial, fungal, and algal biomass are ecologically efficient bioremediators. Most bioremediation techniques are laboratory-scale based on contaminated solutions; however, treatment of fluoride-contaminated wastewater at an industrial scale is yet to be investigated. Therefore, this review recommends the practical applicability and sustainability of microbial bioremediation of fluoride in different environments.
Collapse
|
8
|
Riddell JK, Malin AJ, McCague H, Flora DB, Till C. Urinary Fluoride Levels among Canadians with and without Community Water Fluoridation. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2021; 18:6203. [PMID: 34201160 PMCID: PMC8226595 DOI: 10.3390/ijerph18126203] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/17/2021] [Revised: 06/04/2021] [Accepted: 06/06/2021] [Indexed: 11/17/2022]
Abstract
Drinking water is a major source of dietary fluoride intake in communities with water fluoridation. We examined the association between urinary fluoride adjusted for specific gravity (UFSG) and tap water fluoride levels, by age and sex, among individuals living in Canada. Participants included 1629 individuals aged 3 to 79 years from Cycle 3 (2012-2013) of the Canadian Health Measures Survey. We used multiple linear regression to estimate unique associations of tap water fluoride levels, age, sex, ethnicity, body mass index (BMI), use of fluoride-containing dental products, smoking in the home, and tea consumption with UFSG. UFSG concentration was significantly higher among participants who received fluoridated drinking water (mean = 1.06 mg/L, standard deviation = 0.83) than among those who did not (M = 0.58 mg/L, SD = 0.47), p < 0.01. UFSG increased over adulthood (ages 19 to 79). Higher UFSG concentration was associated with being female, tea drinking, and smoking in the home. In conclusion, community water fluoridation is a major source of contemporary fluoride exposure for Canadians. Lifestyle factors including tea consumption, as well as demographic variables such as age and sex, also predict urinary fluoride level, and are therefore important factors when interpreting population-based fluoride biomonitoring data.
Collapse
Affiliation(s)
- Julia K. Riddell
- Department of Clinical Health Psychology, University of Manitoba, Winnipeg, MB N3E 3N4, Canada
| | - Ashley J. Malin
- Department of Preventive Medicine, Keck School of Medicine of USC, Los Angeles, CA 90032, USA;
| | - Hugh McCague
- Institute for Social Research, York University, Toronto, ON M3J 1P3, Canada; (H.M.); (D.B.F.)
| | - David B. Flora
- Institute for Social Research, York University, Toronto, ON M3J 1P3, Canada; (H.M.); (D.B.F.)
- Faculty of Health, York University, Toronto, ON M3J 1P3, Canada;
| | - Christine Till
- Faculty of Health, York University, Toronto, ON M3J 1P3, Canada;
| |
Collapse
|
9
|
Wang M, Zhang L, Liu Y, Chen D, Liu L, Li C, Kang KJ, Wang L, He Z, Yang X. Spatial variation and fractionation of fluoride in tobacco-planted soils and leaf fluoride concentration in tobacco in Bijie City, Southwest China. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:26112-26123. [PMID: 33483930 DOI: 10.1007/s11356-020-11973-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/13/2020] [Accepted: 12/04/2020] [Indexed: 06/12/2023]
Abstract
Fluorosis is a chronic systemic disease induced by excessive intake of fluoride (F-). Fluoride in water and foods has been widely concerned, while limited reports focused on F- in soils and tobacco leaves which could transfer to human body. In the present study, we mainly focused on the distribution of F- in tobacco-planted soils and tobacco leaves in Bijie City, Southwest China. Soil total F- concentration ranged from 443.7 to 5,979 mg kg-1. The level of F- extracted by water (FH2O) and KCl solution (FKCl) ranged from 0.58 to 25.55 mg kg-1 and from 0.67 to 21.35 mg kg-1, respectively; hence, FH2O could be used to indicate the bioavailability of soil F- in the study area. The sequential extraction of F- show that the residual and exchangeable F- was the highest (97.44-99.73% of the total F-) and lowest (less than 0.25%) fractions of collected soil samples, respectively. According to the distribution of total and soluble F- in the soil profiles at the depth of 0-100 cm, soils were polluted mainly at the 0-40 cm layer. The soluble F- content in rhizosphere soils were higher than that in bulk soils, and tobacco leaves accumulated F- ranged from 16.73 to 111.3 mg kg-1 which was affected by soil pH and Ca content. Tobacco leaves F- level was related to the maturity of the leaves, with the F-content of medium leaves being higher than that of top leaves. More attention should be paid to tobacco with high F- content since F- pollution may transfer to human body via tobacco smoking.
Collapse
Affiliation(s)
- Mei Wang
- Key Laboratory of Environment Remediation and Ecological Health, Ministry of Education, College of Environmental Resource Sciences, Zhejiang University, Zijingang Campus, Yuhangtang Road 866, Hangzhou, 310058, China
| | - Long Zhang
- Bijie Branch Company of Guizhou Tobacco Company, Anshun, 551713, Guizhou, China
| | - Yanxiang Liu
- Bijie Branch Company of Guizhou Tobacco Company, Anshun, 551713, Guizhou, China
| | - Dan Chen
- Key Laboratory of Environment Remediation and Ecological Health, Ministry of Education, College of Environmental Resource Sciences, Zhejiang University, Zijingang Campus, Yuhangtang Road 866, Hangzhou, 310058, China
| | - Lei Liu
- Key Laboratory of Environment Remediation and Ecological Health, Ministry of Education, College of Environmental Resource Sciences, Zhejiang University, Zijingang Campus, Yuhangtang Road 866, Hangzhou, 310058, China
| | - Caibing Li
- Bijie Branch Company of Guizhou Tobacco Company, Anshun, 551713, Guizhou, China
| | - Kyong Ju Kang
- Key Laboratory of Environment Remediation and Ecological Health, Ministry of Education, College of Environmental Resource Sciences, Zhejiang University, Zijingang Campus, Yuhangtang Road 866, Hangzhou, 310058, China
- Faculty of Environmental science, University of science, Pyongyang, 00850, Democratic People's Republic of Korea
| | - Lingyu Wang
- Key Laboratory of Environment Remediation and Ecological Health, Ministry of Education, College of Environmental Resource Sciences, Zhejiang University, Zijingang Campus, Yuhangtang Road 866, Hangzhou, 310058, China
| | - Zhenli He
- Institute of Food and Agricultural Sciences, Indian River Research and Education Center, University of Florida, Fort Pierce, FL, 34945, USA
| | - Xiaoe Yang
- Key Laboratory of Environment Remediation and Ecological Health, Ministry of Education, College of Environmental Resource Sciences, Zhejiang University, Zijingang Campus, Yuhangtang Road 866, Hangzhou, 310058, China.
| |
Collapse
|
10
|
Peng CY, Xu XF, Ren YF, Niu HL, Yang YQ, Hou RY, Wan XC, Cai HM. Fluoride absorption, transportation and tolerance mechanism in Camellia sinensis, and its bioavailability and health risk assessment: a systematic review. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2021; 101:379-387. [PMID: 32623727 DOI: 10.1002/jsfa.10640] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/28/2020] [Revised: 06/27/2020] [Accepted: 07/05/2020] [Indexed: 06/11/2023]
Abstract
Tea is the one of the most popular non-alcoholic caffeinated beverages in the world. Tea is produced from the tea plant (Camellia sinensis (L.) O. Kuntze), which is known to accumulate fluoride. This article systematically analyzes the literature concerning fluoride absorption, transportation and fluoride tolerance mechanisms in tea plants. Fluoride bioavailability and exposure levels in tea infusions are also reviewed. The circulation of fluoride within the tea plantation ecosystems is in a positive equilibrium, with greater amounts of fluoride introduced to tea orchards than removed. Water extractable fluoride and magnesium chloride (MgCl2 ) extractable fluoride in plantation soil are the main sources of absorption by tea plant root via active trans-membrane transport and anion channels. Most fluoride is readily transported through the xylem as F- /F-Al complexes to leaf cell walls and vacuole. The findings indicate that tea plants employ cell wall accumulation, vacuole compartmentalization, and F-Al complexes to co-detoxify fluoride and aluminum, a possible tolerance mechanism through which tea tolerates higher levels of fluoride than most plants. Furthermore, dietary and endogenous factors influence fluoride bioavailability and should be considered when exposure levels of fluoride in commercially available dried tea leaves are interpreted. The relevant current challenges and future perspectives are also discussed. © 2020 Society of Chemical Industry.
Collapse
Affiliation(s)
- Chuan-Yi Peng
- State Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, Hefei, P. R. China
- Key Laboratory of Food Nutrition and Safety, School of Tea and Food Science & Technology, Anhui Agricultural University, Hefei, P. R. China
- Anhui Province Key Lab of Analysis and Detection for Food Safety, Hefei, P. R. China
| | - Xue-Feng Xu
- State Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, Hefei, P. R. China
- Key Laboratory of Food Nutrition and Safety, School of Tea and Food Science & Technology, Anhui Agricultural University, Hefei, P. R. China
- Anhui Province Key Lab of Analysis and Detection for Food Safety, Hefei, P. R. China
| | - Yin-Feng Ren
- State Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, Hefei, P. R. China
- Key Laboratory of Food Nutrition and Safety, School of Tea and Food Science & Technology, Anhui Agricultural University, Hefei, P. R. China
- Anhui Province Key Lab of Analysis and Detection for Food Safety, Hefei, P. R. China
| | - Hui-Liang Niu
- State Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, Hefei, P. R. China
- Key Laboratory of Food Nutrition and Safety, School of Tea and Food Science & Technology, Anhui Agricultural University, Hefei, P. R. China
- Anhui Province Key Lab of Analysis and Detection for Food Safety, Hefei, P. R. China
| | - Yun-Qiu Yang
- State Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, Hefei, P. R. China
- Key Laboratory of Food Nutrition and Safety, School of Tea and Food Science & Technology, Anhui Agricultural University, Hefei, P. R. China
- Anhui Province Key Lab of Analysis and Detection for Food Safety, Hefei, P. R. China
| | - Ru-Yan Hou
- State Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, Hefei, P. R. China
- Key Laboratory of Food Nutrition and Safety, School of Tea and Food Science & Technology, Anhui Agricultural University, Hefei, P. R. China
- Anhui Province Key Lab of Analysis and Detection for Food Safety, Hefei, P. R. China
| | - Xiao-Chun Wan
- State Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, Hefei, P. R. China
- Key Laboratory of Food Nutrition and Safety, School of Tea and Food Science & Technology, Anhui Agricultural University, Hefei, P. R. China
- Anhui Province Key Lab of Analysis and Detection for Food Safety, Hefei, P. R. China
| | - Hui-Mei Cai
- State Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, Hefei, P. R. China
- Key Laboratory of Food Nutrition and Safety, School of Tea and Food Science & Technology, Anhui Agricultural University, Hefei, P. R. China
- Anhui Province Key Lab of Analysis and Detection for Food Safety, Hefei, P. R. China
| |
Collapse
|
11
|
Qin L, Guo L, Xu B, Hsueh CC, Jiang M, Chen BY. Exploring community evolutionary characteristics of microbial populations with supplementation of Camellia green tea extracts in microbial fuel cells. J Taiwan Inst Chem Eng 2020; 113:214-222. [PMID: 32904523 PMCID: PMC7455116 DOI: 10.1016/j.jtice.2020.08.015] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2020] [Revised: 08/02/2020] [Accepted: 08/08/2020] [Indexed: 02/07/2023]
Abstract
This first-attempt study deciphered combined characteristics of species evolution and bioelectricity generation of microbial community in microbial fuel cells (MFCs) supplemented with Camellia green tea (GT) extracts for biomass energy extraction. Prior studies indicated that polyphenols-rich extracts as effective redox mediators (RMs) could exhibit significant electrochemical activities to enhance power generation in MFCs. However, the supplementation of Camellia GT extract obtained at room temperature with significant redox capabilities into MFCs unexpectedly exhibited obvious inhibitory effect towards power generation. This systematic study indicated that the presence of antimicrobial components (especially catechins) in GT extract might significantly alter the distribution of microbial community, in particular a decrease of microbial diversity and evenness. For practical applications to different microbial systems, pre-screening criteria of selecting biocompatible RMs should not only consider their promising redox capabilities (abiotic), but also possible inhibitory potency (biotic) to receptor microbes. Although Camellia tea extract was well-characterized as GRAS energy drink, some contents (e.g., catechins) may still express inhibition towards organisms and further assessment upon biotoxicity may be inevitably required for practice.
Collapse
Affiliation(s)
- Lianjie Qin
- School of Environmental and Materials Engineering, Yan-Tai University, Yantai 264005, China
| | - Lili Guo
- School of Environmental and Materials Engineering, Yan-Tai University, Yantai 264005, China
| | - Bin Xu
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing 211800, China
| | - Chung-Chuan Hsueh
- Department of Chemical and Materials Engineering, National I-Lan University, I-Lan 26047, Taiwan
| | - Min Jiang
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing 211800, China
| | - Bor-Yann Chen
- Department of Chemical and Materials Engineering, National I-Lan University, I-Lan 26047, Taiwan
| |
Collapse
|
12
|
Abduweli Uyghurturk D, Goin DE, Martinez-Mier EA, Woodruff TJ, DenBesten PK. Maternal and fetal exposures to fluoride during mid-gestation among pregnant women in northern California. Environ Health 2020; 19:38. [PMID: 32248806 PMCID: PMC7132865 DOI: 10.1186/s12940-020-00581-2] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2019] [Accepted: 02/20/2020] [Indexed: 05/28/2023]
Abstract
BACKGROUND Previous studies have shown a correlation between fluoride concentrations in urine and community water fluoride concentrations. However, there are no studies of the relationship between community water fluoridation, urine, serum, and amniotic fluid fluoride concentrations in pregnant women in the US. The aim of this study was to determine the relationship between maternal urine fluoride (MUF), maternal urine fluoride adjusted for specific gravity (MUFSG), maternal serum fluoride (MSF), amniotic fluid fluoride (AFF) concentrations during pregnancy, and community water fluoridation in Northern California. METHODS Archived samples of urine, serum and amniotic fluid collected from second trimester pregnant women in Northern California from 47 different communities in Northern California and one from Montana (n = 48), were analyzed for fluoride using an ion specific electrode following acid microdiffusion. Women's addresses were matched to publicly reported water fluoride concentrations. We examined whether fluoride concentrations in biospecimens differed by fluoridation status of the community water, and determined the association between water fluoride concentrations and biospecimen fluoride concentrations using linear regression models adjusted for maternal age, smoking, Body Mass Index (BMI), race/ethnicity, and gestational age at sample collection. RESULTS Fluoride concentrations in the community water supplies ranged from 0.02 to 1.00 mg/L. MUF, MSF , and AFF concentrations were significantly higher in pregnant women living in communities adhering to the U.S. recommended water fluoride concentration (0.7 mg/L), as compared with communities with less than 0.7 mg/L fluoride in drinking water. When adjusted for maternal age, smoking status, BMI, race/ethnicity, and gestational age at sample collection, a 0.1 mg/L increase in community water fluoride concentration was positively associated with higher concentrations of MUF (B = 0.052, 95% CI:0.019,0.085), MUFSG (B = 0.028, 95% CI: -0.006, 0.062), MSF (B = 0.001, 95% CI: 0.000, 0.003) and AFF (B = 0.001, 95% CI: 0.000, 0.002). CONCLUSIONS We found universal exposure to fluoride in pregnant women and to the fetus via the amniotic fluid. Fluoride concentrations in urine, serum, and amniotic fluid from women were positively correlated to public records of community water fluoridation. Community water fluoridation remains a major source of fluoride exposure for pregnant women living in Northern California.
Collapse
Affiliation(s)
- Dawud Abduweli Uyghurturk
- Department of Orofacial Sciences, School of Dentistry, University of California, San Francisco, San Francisco, California USA
| | - Dana E. Goin
- Program on Reproductive Health and the Environment, Department of Obstetrics, Gynecology, and Reproductive Sciences, University of California, San Francisco, San Francisco, California USA
| | - Esperanza Angeles Martinez-Mier
- Department of Cariology, Operative Dentistry and Dental Public Health, Indiana University School of Dentistry, Indianapolis, Indiana USA
| | - Tracey J. Woodruff
- Program on Reproductive Health and the Environment, Department of Obstetrics, Gynecology, and Reproductive Sciences, University of California, San Francisco, San Francisco, California USA
| | - Pamela K. DenBesten
- Department of Orofacial Sciences, School of Dentistry, University of California, San Francisco, San Francisco, California USA
| |
Collapse
|
13
|
Zulfiqar S, Ajaz H, Rehman SU, Elahi S, Shakeel A, Yasmeen F, Altaf S. Effect of excess Fluoride consumption on Urine-Serum Fluorides, Dental state and Thyroid Hormones among children in “Talab Sarai” Punjab Pakistan. OPEN CHEM 2020. [DOI: 10.1515/chem-2020-0012] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Abstract190 children aged 7-18 years from an endemic fluorotic village “Talab Sarai (n = 130) and a non-fluorotic, control, village “Ottawa” (n = 60) were selected for comparison. Children were examined for fluoride (F-) concentration in drinking water, urine, and serum as well as Dental fluorosis (DF) and thyroid hormone levels. The mean concentration of water fluoride (WF) in the sample group was 6.23 mg/L, urine fluoride (UF) 3.38 mg/L, and serum fluoride (SF) 0.21 mg/L, while DF was 93.07%. Significant elevations (P = 0.000) in the concentration of all these four variables were observed in sample group children as compared to control. Mean Free Tetra-iodothyronine (FT4), Free Tri-iodothyronine (FT3) and Thyroid Stimulating Hormone (TSH) concentrations in the sample group were 16.64pmol/L, 5.57 pmol /L and 4.41 mlU/L, respectively. No marked difference in FT4 (P = 0.1) was noted, while significant elevations in FT3 and TSH (P = 0.000) were found in the sample relative to the control group. 80% of the children displayed clear thyroid hormonal derangements, with 36.92% having high TSH and 43.07% with FT3 and FT4 disorders. A moderate to strong correlation among WF, UF, SF and DF (r = 0.94, 0.60, 0.60, 0.72) and a very strong correlation between WF and TSH (r = 0.9) were observed. Our results suggest that excess F- level that is four times greater than the “safe limit” is not only increasing fluoride concentration in body fluids but is also affecting thyroid hormones in 4 out of 5 children which could lead to abnormal physical and mental growth in later developmental stages.
Collapse
Affiliation(s)
- Sadia Zulfiqar
- Department of Chemistry, University of Engineering & Technology, Lahore, Pakistan
| | - Humayun Ajaz
- Department of Chemistry, University of Engineering & Technology, Lahore, Pakistan
| | - Shafiq ur Rehman
- Faculty of Sciences, University of Central Punjab, Lahore, Pakistan
| | - Shan Elahi
- Centre for Nuclear Medicine (CENUM), Mayo Hospital, Lahore, Pakistan
| | - Amer Shakeel
- University of Management & Technology, Lahore, Pakistan
| | - Farhat Yasmeen
- Department of Chemistry, University of Engineering & Technology, Lahore, Pakistan
| | - Shehnila Altaf
- Department of Chemistry, University of Engineering & Technology, Lahore, Pakistan
| |
Collapse
|
14
|
Till C, Green R, Grundy JG, Hornung R, Neufeld R, Martinez-Mier EA, Ayotte P, Muckle G, Lanphear B. Community Water Fluoridation and Urinary Fluoride Concentrations in a National Sample of Pregnant Women in Canada. ENVIRONMENTAL HEALTH PERSPECTIVES 2018; 126:107001. [PMID: 30392399 PMCID: PMC6371693 DOI: 10.1289/ehp3546] [Citation(s) in RCA: 47] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/07/2023]
Abstract
BACKGROUND Fluoride exposures have not been established for pregnant women who live in regions with and without community water fluoridation. OBJECTIVE Our aim was to measure urinary fluoride levels during pregnancy. We also assessed the contribution of drinking-water and tea consumption habits to maternal urinary fluoride (MUF) concentrations and evaluated the impact of various dilution correction standards, including adjustment for urinary creatinine and specific gravity (SG). METHODS We measured MUF concentrations in spot samples collected in each trimester of pregnancy from 1,566 pregnant women in the Maternal-Infant Research on Environmental Chemicals cohort. We calculated intraclass correlation coefficients (ICCs) to assess variability in MUF concentrations across pregnancy. We used regression analyses to estimate associations between MUF levels, tea consumption, and water fluoride concentrations as measured by water treatment plants. RESULTS Creatinine-adjusted MUF values ([Formula: see text]; milligrams per liter) were almost two times higher for pregnant women living in fluoridated regions ([Formula: see text]) compared with nonfluoridated regions ([Formula: see text]; [Formula: see text]). MUF values tended to increase over the course of pregnancy using both unadjusted values and adjusted values. Reproducibility of the unadjusted and adjusted MUF values was modest ([Formula: see text]). The municipal water fluoride level was positively associated with creatinine-adjusted MUF ([Formula: see text], 95% CI: 0.46, 0.57), accounting for 24% of the variance after controlling for covariates. Higher MUF concentrations correlated with numbers of cups of black ([Formula: see text] but not green tea ([Formula: see text]). Urinary creatinine and SG correction methods were highly correlated ([Formula: see text]) and were interchangeable in models examining predictors of MUF. CONCLUSION Community water fluoridation is a major source of fluoride exposure for pregnant women living in Canada. Urinary dilution correction with creatinine and SG were shown to be interchangeable for our sample of pregnant women. https://doi.org/10.1289/EHP3546.
Collapse
Affiliation(s)
- Christine Till
- Faculty of Health, York University, Toronto, Ontario, Canada
| | - Rivka Green
- Faculty of Health, York University, Toronto, Ontario, Canada
| | - John G Grundy
- Faculty of Health, York University, Toronto, Ontario, Canada
| | - Richard Hornung
- Pediatrics and Environmental Health, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio, USA
| | - Raichel Neufeld
- Faculty of Health, York University, Toronto, Ontario, Canada
| | | | - Pierre Ayotte
- Department of Social and Preventive Medicine, Laval University, Quebec, Quebec, Canada
- Centre de Recherche du CHU de Québec, Université Laval, Quebec, Quebec, Canada
| | - Gina Muckle
- Centre de Recherche du CHU de Québec, Université Laval, Quebec, Quebec, Canada
- School of Psychology, Laval University, Quebec, Quebec, Canada
| | - Bruce Lanphear
- Faculty of Health Sciences, Simon Fraser University, Vancouver, British Columbia, Canada
- Child & Family Research Institute, BC Children's Hospital, University of British Columbia, Vancouver, British Columbia, Canada
| |
Collapse
|
15
|
Jean KJ, Wassef N, Gagnon F, Valcke M. A Physiologically-Based Pharmacokinetic Modeling Approach Using Biomonitoring Data in Order to Assess the Contribution of Drinking Water for the Achievement of an Optimal Fluoride Dose for Dental Health in Children. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2018; 15:E1358. [PMID: 29958421 PMCID: PMC6069276 DOI: 10.3390/ijerph15071358] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/27/2018] [Revised: 06/19/2018] [Accepted: 06/21/2018] [Indexed: 12/05/2022]
Abstract
Due to an optimal fluoride concentration in drinking water advised for caries prevention purposes, the population is now exposed to multiple sources of fluoride. The availability of population biomonitoring data currently allow us to evaluate the magnitude of this exposure. The objective of this work was, therefore, to use such data in order to estimate whether community water fluoridation still represents a significant contribution toward achieving a suggested daily optimal fluoride (external) intake of 0.05 mg/kg/day. Therefore, a physiologically-based pharmacokinetic model for fluoride published in the literature was used and adapted in Excel for a typical 4-year-old and 8-year-old child. Biomonitoring data from the Canadian Health Measures Survey among people living in provinces with very different drinking water fluoridation coverage (Quebec, 2.5%; Ontario, 70% of the population) were analyzed using this adapted model. Absorbed doses for the 4-year-old and 8-year-old children were, respectively, 0.03 mg/kg/day and 0.02 mg/kg/day in Quebec and of 0.06 mg/kg/day and 0.05 mg/kg/day in Ontario. These results show that community water fluoridation contributes to increased fluoride intake among children, which leads to reaching, and in some cases even exceeding, the suggested optimal absorbed dose of 0.04 mg/kg/day, which corresponds to the suggested optimal fluoride intake mentioned above. In conclusion, this study constitutes an incentive to further explore the multiple sources of fluoride intake and suggests that a new balance between them including drinking water should be examined in accordance with the age-related physiological differences that influence fluoride metabolism.
Collapse
Affiliation(s)
- Keven J Jean
- Institut National de Santé Publique du Québec (INSPQ), Montréal, QC H2P 1E2, Canada.
- Département de Santé Environnementale et Santé au Travail, École de Santé Publique de l'Université de Montréal (ESPUM), Montréal, QC H3C 3J7, Canada.
| | - Nancy Wassef
- Institut National de Santé Publique du Québec (INSPQ), Montréal, QC H2P 1E2, Canada.
| | - Fabien Gagnon
- Institut National de Santé Publique du Québec (INSPQ), Montréal, QC H2P 1E2, Canada.
- Centre de Recherche du Centre Hospitalier Universitaire de Sherbrooke (CRCHUS), Sherbrooke, QC J1H 5N4, Canada.
| | - Mathieu Valcke
- Institut National de Santé Publique du Québec (INSPQ), Montréal, QC H2P 1E2, Canada.
- Département de Santé Environnementale et Santé au Travail, École de Santé Publique de l'Université de Montréal (ESPUM), Montréal, QC H3C 3J7, Canada.
| |
Collapse
|
16
|
Hasan MK, Alam S, Mirkovic J, Hossain MF. Screening of Human Proteins for Fluoride and Aluminum Binding. Bioinformation 2018; 14:68-74. [PMID: 29618902 PMCID: PMC5879948 DOI: 10.6026/97320630014068] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2018] [Revised: 02/06/2018] [Accepted: 02/07/2018] [Indexed: 12/19/2022] Open
Abstract
Previous studies showed that prolonged exposure to fluoride (F-) and aluminum (Al3+) ions is associated with numerous diseases including neurological disorders. They don't have any known biological function. But they can bind with proteins that interact with ions similar to them. Such unwanted interactions affect the normal biological function of the target proteins, as well as their downstream protein-protein interactions. Several studies show the detrimental effects posed by them including Alzheimer's disease. However, their target proteins have never been reported. Here, we have screened for the human protein targets subjected to F- and Al3+ interactions by using data-driven prediction tools. We have identified 20 different proteins that directly bind with them (10 interact with fluoride and 10 with aluminum). In addition, protein-protein interaction has been explored to find the proteins that indirectly interact with F- and Al3+. We have found 86 indirect targets for F- and 90 for Al3+. Furthermore, 19 common protein targets have been identified, including proteins (9 out of 19) associated with neurodegenerative disorders. However, wet lab experiments are beyond our scopes to validate the binding networks. Additional studies must be warranted.
Collapse
Affiliation(s)
- Md. Kamrul Hasan
- Department of Biochemistry and Molecular Biology, University of Dhaka, Dhaka, Bangladesh
| | - Saruar Alam
- Department of Biochemistry and Molecular Biology, University of Dhaka, Dhaka, Bangladesh
| | - Jovan Mirkovic
- Department of Biological Sciences, St. John's University, Queens, New York 11439
| | - Md. Faruk Hossain
- Department of Biological Sciences, St. John's University, Queens, New York 11439
| |
Collapse
|
17
|
Sharma D, Singh A, Verma K, Paliwal S, Sharma S, Dwivedi J. Fluoride: A review of pre-clinical and clinical studies. ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY 2017; 56:297-313. [PMID: 29091818 DOI: 10.1016/j.etap.2017.10.008] [Citation(s) in RCA: 55] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/26/2017] [Revised: 10/16/2017] [Accepted: 10/17/2017] [Indexed: 06/07/2023]
Abstract
Fluoride is ubiquitous in environment and profound in bones, teeth and calcified tissues of human body. Fluoride has been the topic of regular discussion and investigations. Besides its toxicity, fluoride has also been examined for its beneficial effects like prevention and treatment of tooth decay, microbial infection, inflammation, cancer, occurrence of renal stone and many more. Since last many decades, several efforts have been made at pre-clinical and clinical level to understand role of fluoride in biological system. The present review gives a brief account of prevalence, sources of fluoride toxicity and pre-clinical and clinical studies carried out on effects of fluoride in last six decades.
Collapse
Affiliation(s)
- Divya Sharma
- Department of Pharmacy, Banasthali University, Banasthali, India
| | - Aarti Singh
- Department of Chemistry, Banasthali University, Banasthali, India
| | - Kanika Verma
- Department of Pharmacy, Banasthali University, Banasthali, India
| | - Sarvesh Paliwal
- Department of Pharmacy, Banasthali University, Banasthali, India
| | - Swapnil Sharma
- Department of Pharmacy, Banasthali University, Banasthali, India.
| | - Jaya Dwivedi
- Department of Chemistry, Banasthali University, Banasthali, India
| |
Collapse
|
18
|
Rocha DP, Anjos GTC, Neri TS, Tronto J, Pinto FG, Silva SG, Coelho NMM. A flow injection procedure using Layered Double Hydroxide for on line pre-concentration of fluoride. Talanta 2017; 178:102-108. [PMID: 29136791 DOI: 10.1016/j.talanta.2017.09.015] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2017] [Revised: 09/03/2017] [Accepted: 09/06/2017] [Indexed: 10/18/2022]
Abstract
This work showed a flow system designed with solenoid valves for preconcentration of fluoride using SPADNS method in water samples. The analyte was preconcentrated in a mini-column coated with Layered Double Hydroxides (LDH) used as adsorbent. Then, the fluoride ions were eluted with 0.5molL-1 sodium hydroxide and determined by spectrophotometry. The variables that affect the system such adsorbent mass, type of eluent, solutions flow rate, reagent concentration and pH effect were critically evaluated. Under optimized conditions, the detection limit, coefficient of variation, linear range and preconcentration factor were estimated at 15µgL-1 (99.7% confidence level), 0.8% (500µgL-1, n = 10), 50-500µgL-1 and 10, respectively. The accuracy of the method was evaluated by analysis of ALPHA APS 1076 (Simulated Rain Water) certified material, the values were not significantly different at a 95% level of confidence. The method was applied for fluoride determination in water samples and the levels found were below the maximum values established by Brazilian environmental and health legislations.
Collapse
Affiliation(s)
- Diego P Rocha
- Federal University of Uberlândia, Institute of Chemistry, Avenue João Naves de Ávila, 2121, Santa Mônica, Uberlândia, MG CEP 38400-902, Brazil
| | - Gabriel T C Anjos
- Federal University of Uberlândia, Institute of Chemistry, Avenue João Naves de Ávila, 2121, Santa Mônica, Uberlândia, MG CEP 38400-902, Brazil
| | - Thais S Neri
- Federal University of Uberlândia, Institute of Chemistry, Avenue João Naves de Ávila, 2121, Santa Mônica, Uberlândia, MG CEP 38400-902, Brazil
| | - Jairo Tronto
- Federal University of Viçosa, Campus de Rio Paranaíba, Institute of Exact and Technological Sciences, Rodovia MG-230 - Km 8, Rio Paranaíba, MG CEP 38810-000, Brazil
| | - Frederico G Pinto
- Federal University of Viçosa, Campus de Rio Paranaíba, Institute of Exact and Technological Sciences, Rodovia MG-230 - Km 8, Rio Paranaíba, MG CEP 38810-000, Brazil
| | - Sidnei G Silva
- Federal University of Uberlândia, Institute of Chemistry, Avenue João Naves de Ávila, 2121, Santa Mônica, Uberlândia, MG CEP 38400-902, Brazil
| | - Nívia M M Coelho
- Federal University of Uberlândia, Institute of Chemistry, Avenue João Naves de Ávila, 2121, Santa Mônica, Uberlândia, MG CEP 38400-902, Brazil.
| |
Collapse
|
19
|
Linhares DPS, Garcia PV, Amaral L, Ferreira T, Dos Santos Rodrigues A. Safety Evaluation of Fluoride Content in Tea Infusions Consumed in the Azores-a Volcanic Region with Water Springs naturally Enriched in Fluoride. Biol Trace Elem Res 2017; 179:158-164. [PMID: 28120305 DOI: 10.1007/s12011-017-0947-9] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/15/2016] [Accepted: 01/18/2017] [Indexed: 10/20/2022]
Abstract
Tea is the second most commonly consumed beverage in the world. It is well recognized that the consumption of tea in high quantities can promote the development of fluorosis. The main objective of this study is to estimate the exposure to fluoride in the Azores through drinking tea prepared with water from different volcanic locations, by i) investigating the fluoride (F) content of various commercial brands of tea (Camellia sinensis) marketed in Azores and ii) comparing tea releasing rates of F according to brewing time, considering the fluoride concentration in the different types of water used for the infusion. Fluoride contents were determined by ion-selective electrode in 30 samples of drinking water from three different locations and in 450 samples of tea (black and green tea) from three different brands. Fluoride concentration in water ranged from 0.29 to 1.56 ppm (Porto Formoso and Sete Cidades village, respectively). Fluoride concentrations increased with brewing time, reaching the highest values in the Azorean black and green tea infusions. For all the studied brands, a negative correlation was found between tea fluoride contents and the pH of the water used to prepare the infusion. Fluoride concentration in infusions was significantly associated with the background fluoride concentration in drinking water. Since the fluoride concentration in groundwater varies accordingly to the geological conditions and tea consumption can contribute to fluoride intake, it is important to define the limits for tea consumption, particularly in fluoride-rich areas. Graphical Abstract Fluoride concentrations in black and green tea for 3 minutes of brewing time and, association between fluoride concentration and pH with brewing time.
Collapse
Affiliation(s)
- Diana Paula Silva Linhares
- Faculty of Sciences and Technology, University of the Azores, Rua da Mãe de Deus, Apartado 1422, 9501-801, Ponta Delgada, Azores, Portugal.
- IVAR, Instituto de Investigação em Vulcanologia e Avaliação de Riscos, University of the Azores, 9501-801 Ponta Delgada, Azores, Portugal.
| | - Patrícia Ventura Garcia
- Faculty of Sciences and Technology, University of the Azores, Rua da Mãe de Deus, Apartado 1422, 9501-801, Ponta Delgada, Azores, Portugal
- cE3c, Centre for Ecology, Evolution and Environmental Changes and Azorean Biodiversity Group, University of the Azores, 9501-801 Ponta Delgada, Azores, Portugal
| | - Leslie Amaral
- Faculty of Sciences and Technology, University of the Azores, Rua da Mãe de Deus, Apartado 1422, 9501-801, Ponta Delgada, Azores, Portugal
- School of Sciences, University of Minho, Gualtar Campus, 4710-057, Braga, Portugal
| | - Teresa Ferreira
- Faculty of Sciences and Technology, University of the Azores, Rua da Mãe de Deus, Apartado 1422, 9501-801, Ponta Delgada, Azores, Portugal
- IVAR, Instituto de Investigação em Vulcanologia e Avaliação de Riscos, University of the Azores, 9501-801 Ponta Delgada, Azores, Portugal
| | - Armindo Dos Santos Rodrigues
- Faculty of Sciences and Technology, University of the Azores, Rua da Mãe de Deus, Apartado 1422, 9501-801, Ponta Delgada, Azores, Portugal
- cE3c, Centre for Ecology, Evolution and Environmental Changes and Azorean Biodiversity Group, University of the Azores, 9501-801 Ponta Delgada, Azores, Portugal
| |
Collapse
|
20
|
Waugh DT, Godfrey M, Limeback H, Potter W. Black Tea Source, Production, and Consumption: Assessment of Health Risks of Fluoride Intake in New Zealand. JOURNAL OF ENVIRONMENTAL AND PUBLIC HEALTH 2017; 2017:5120504. [PMID: 28713433 PMCID: PMC5497633 DOI: 10.1155/2017/5120504] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 12/23/2016] [Revised: 04/25/2017] [Accepted: 05/18/2017] [Indexed: 02/03/2023]
Abstract
In countries with fluoridation of public water, it is imperative to determine other dietary sources of fluoride intake to reduce the public health risk of chronic exposure. New Zealand has one of the highest per capita consumption rates of black tea internationally and is one of the few countries to artificially fluoridate public water; yet no information is available to consumers on the fluoride levels in tea products. In this study, we determined the contribution of black tea as a source of dietary fluoride intake by measuring the fluoride content in 18 brands of commercially available products in New Zealand. Fluoride concentrations were measured by potentiometric method with a fluoride ion-selective electrode and the contribution of black tea to Adequate Intake (AI) and Tolerable Upper Intake Level (UL) was calculated for a range of consumption scenarios. We examined factors that influence the fluoride content in manufactured tea and tea infusions, as well as temporal changes in fluoride exposure from black tea. We review the international evidence regarding chronic fluoride intake and its association with chronic pain, arthritic disease, and musculoskeletal disorders and provide insights into possible association between fluoride intake and the high prevalence of these disorders in New Zealand.
Collapse
Affiliation(s)
- Declan T. Waugh
- EnviroManagement Services, 11 Riverview, Dohertys Rd, Bandon, Co. Cork P72 YF10, Ireland
| | - Michael Godfrey
- Bay of Plenty Environmental Health Clinic, 1416A Cameron Road, Tauranga 3012, New Zealand
| | - Hardy Limeback
- Faculty of Dentistry, University of Toronto, 124 Edward Street, Toronto, ON, Canada M5G 1G6
| | - William Potter
- Department of Chemistry and Biochemistry, KEH M2225, University of Tulsa, Tulsa, OK, USA
| |
Collapse
|
21
|
Abstract
Although the association between inflammatory bowel disease (IBD) and oral hygiene has been noticed before, there has been little research on prolonged fluoride exposure as a possible risk factor. In the presented cases, exposure to fluoride seems indirectly associated with higher incidence of IBD. Fluoride toxicology and epidemiology documents frequent unspecific chronic gastrointestinal symptoms and intestinal inflammation. Efflux genes that confer resistance to environmental fluoride may select for IBD associated gut microbiota and therefore be involved in the pathogenesis. Together these multidisciplinary results argue for further investigation on the hypothesis of fluoride as a risk factor for IBD.
Collapse
Affiliation(s)
| | - Bjørn Moum
- b Department of Gastroenterology , Oslo University Hospital Ullevaal & University of Oslo , Oslo , Norway
| |
Collapse
|
22
|
Bhadja V, Trivedi JS, Chatterjee U. Efficacy of polyethylene Interpolymer membranes for fluoride and arsenic ion removal during desalination of water via electrodialysis. RSC Adv 2016. [DOI: 10.1039/c6ra11450d] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
We report the comparative fluoride and arsenic ion removal efficacies of three different pairs of ion exchange membranes via electrodialysis during the desalination of ground water.
Collapse
Affiliation(s)
- Vaibhavee Bhadja
- CSIR-Central Salt & Marine Chemical Research Institute
- Bhavnagar
- India
- AcSIR-Central Salt & Marine Chemicals Research Institute
- Bhavnagar
| | | | - Uma Chatterjee
- CSIR-Central Salt & Marine Chemical Research Institute
- Bhavnagar
- India
- AcSIR-Central Salt & Marine Chemicals Research Institute
- Bhavnagar
| |
Collapse
|
23
|
Borges AR, Duarte ÁT, Potes MDL, Silva MM, Vale MGR, Welz B. Fluorine in eye shadow: Development of method using high-resolution continuum source graphite furnace molecular absorption spectrometry via calcium mono-fluoride with direct solid sample introduction. Microchem J 2016. [DOI: 10.1016/j.microc.2015.09.025] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
24
|
Rehman MA, Yusoff I, Alias Y. Fluoride adsorption by doped and un-doped magnetic ferrites CuCe(x)Fe(2-x)O4: Preparation, characterization, optimization and modeling for effectual remediation technologies. JOURNAL OF HAZARDOUS MATERIALS 2015; 299:316-324. [PMID: 26143194 DOI: 10.1016/j.jhazmat.2015.06.030] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/24/2015] [Revised: 06/05/2015] [Accepted: 06/19/2015] [Indexed: 06/04/2023]
Abstract
A series of doped and un-doped magnetic adsorbents CuCexFe2-xO4 (x=0.0-0.5) for fluoride were prepared with the micro-emulsion method. Fluoride adsorption was optimized for solution pH, temperature, contact time, and initial concentration and was monitored via normal phase ion chromatography (IC). The effect of concomitant anions was also explored to perform and simulate competitive fluoride adsorption in real water samples. Optimal adsorption was discovered by a simple quadratic model based on central composite design (CCD) and the response surface method (RSM). The adsorption, electrochemical and magnetic properties were compared between doped and un-doped ferrites. Doped ferrites (x=0.1-0.5) were found to be superior to un-doped ferrites (x=0) regarding the active sites, functional groups and fluoride adsorption. The characterization, optimization and application results of the doped ferrites indicated enhanced fluoride adsorption and easy separation with a simple magnet.
Collapse
Affiliation(s)
- Muhammad Abdur Rehman
- Department of Geology, Faculty of Science, University of Malaya, Kuala Lumpur 50603, Malaysia; Department of Chemistry, Faculty of Science, University of Malaya, 50603 Kuala Lumpur, Malaysia.
| | - Ismail Yusoff
- Department of Geology, Faculty of Science, University of Malaya, Kuala Lumpur 50603, Malaysia
| | - Yatimah Alias
- Department of Chemistry, Faculty of Science, University of Malaya, 50603 Kuala Lumpur, Malaysia
| |
Collapse
|
25
|
Peng CY, Cai HM, Zhu XH, Li DX, Yang YQ, Hou RY, Wan XC. Analysis of Naturally Occurring Fluoride in Commercial Teas and Estimation of Its Daily Intake through Tea Consumption. J Food Sci 2015; 81:H235-9. [DOI: 10.1111/1750-3841.13180] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2015] [Accepted: 11/07/2015] [Indexed: 11/29/2022]
Affiliation(s)
| | | | - Xiao-hui Zhu
- State Key Laboratory of Tea Plant Biology and Utilization; Anhui Agricultural Univ; Hefei 230036 Anhui People's Republic of China
| | - Da-xiang Li
- State Key Laboratory of Tea Plant Biology and Utilization; Anhui Agricultural Univ; Hefei 230036 Anhui People's Republic of China
| | - Yun-qiu Yang
- State Key Laboratory of Tea Plant Biology and Utilization; Anhui Agricultural Univ; Hefei 230036 Anhui People's Republic of China
| | - Ru-yan Hou
- State Key Laboratory of Tea Plant Biology and Utilization; Anhui Agricultural Univ; Hefei 230036 Anhui People's Republic of China
| | - Xiao-chun Wan
- State Key Laboratory of Tea Plant Biology and Utilization; Anhui Agricultural Univ; Hefei 230036 Anhui People's Republic of China
| |
Collapse
|
26
|
Mostafaei F, Blake SP, Liu Y, Sowers DA, Nie LH. Compact DD generator-based neutron activation analysis (NAA) system to determine fluorine in human bone in vivo: a feasibility study. Physiol Meas 2015; 36:2057-67. [PMID: 26289795 DOI: 10.1088/0967-3334/36/10/2057] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
The subject of whether fluorine (F) is detrimental to human health has been controversial for many years. Much of the discussion focuses on the known benefits and detriments to dental care and problems that F causes in bone structure at high doses. It is therefore advantageous to have the means to monitor F concentrations in the human body as a method to directly assess exposure. F accumulates in the skeleton making bone a useful biomarker to assess long term cumulative exposure to F. This study presents work in the development of a non-invasive method for the monitoring of F in human bone. The work was based on the technique of in vivo neutron activation analysis (IVNAA). A compact deuterium-deuterium (DD) generator was used to produce neutrons. A moderator/reflector/shielding assembly was designed and built for human hand irradiation. The gamma rays emitted through the (19)F(n,γ)(20)F reaction were measured using a HPGe detector. This study was undertaken to (i) find the feasibility of using DD system to determine F in human bone, (ii) estimate the F minimum detection limit (MDL), and (iii) optimize the system using the Monte Carlo N-Particle eXtended (MCNPX) code in order to improve the MDL of the system. The F MDL was found to be 0.54 g experimentally with a neutron flux of 7 × 10(8) n s(-1) and an optimized irradiation, decay, and measurement time scheme. The numbers of F counts from the experiment were found to be close to the (MCNPX) simulation results with the same irradiation and detection parameters. The equivalent dose to the irradiated hand and the effective dose to the whole body were found to be 0.9 mSv and 0.33 μSv, respectively. Based on these results, it is feasible to develop a compact DD generator based IVNAA system to measure bone F in a population with moderate to high F exposure.
Collapse
|
27
|
Mostafaei F, McNeill FE, Chettle DR, Wainman BC, Pidruczny AE, Prestwich WV. Measurements of fluorine in contemporary urban Canadians: a comparison of the levels found in human bone usingin vivoandex vivoneutron activation analysis. Physiol Meas 2015; 36:465-87. [DOI: 10.1088/0967-3334/36/3/465] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
|
28
|
Ghosal PS, Gupta AK. An insight into thermodynamics of adsorptive removal of fluoride by calcined Ca–Al–(NO3) layered double hydroxide. RSC Adv 2015. [DOI: 10.1039/c5ra20538g] [Citation(s) in RCA: 70] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A framework for determination of thermodynamic equilibrium constant and Gibbs free surface energy change was presented. The interactive effect of temperature on adsorption process was addressed by RSM. Endothermic, spontaneous reaction was observed.
Collapse
Affiliation(s)
- Partha S. Ghosal
- Environmental Engineering Division
- Department of Civil Engineering
- Indian Institute of Technology
- Kharagpur
- India
| | - Ashok K. Gupta
- Environmental Engineering Division
- Department of Civil Engineering
- Indian Institute of Technology
- Kharagpur
- India
| |
Collapse
|
29
|
Kanaujia S, Singh B, Singh SK. Removal of Fluoride from Groundwater by Carbonised <i>Punica granatum</i> Carbon (“CPGC”) Bio-Adsorbent. ACTA ACUST UNITED AC 2015. [DOI: 10.4236/gep.2015.34001] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
|
30
|
Habuda-Stanić M, Ravančić ME, Flanagan A. A Review on Adsorption of Fluoride from Aqueous Solution. MATERIALS (BASEL, SWITZERLAND) 2014; 7:6317-6366. [PMID: 28788194 PMCID: PMC5456123 DOI: 10.3390/ma7096317] [Citation(s) in RCA: 106] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 07/08/2014] [Revised: 08/19/2014] [Accepted: 08/22/2014] [Indexed: 11/17/2022]
Abstract
Fluoride is one of the anionic contaminants which is found in excess in surface or groundwater because of geochemical reactions or anthropogenic activities such as the disposal of industrial wastewaters. Among various methods used for defluoridation of water such as coagulation, precipitation, membrane processes, electrolytic treatment, ion-exchange, the adsorption process is widely used. It offers satisfactory results and seems to be a more attractive method for the removal of fluoride in terms of cost, simplicity of design and operation. Various conventional and non-conventional adsorbents have been assessed for the removal of fluoride from water. In this review, a list of various adsorbents (oxides and hydroxides, biosorbents, geomaterials, carbonaceous materials and industrial products and by-products) and its modifications from literature are surveyed and their adsorption capacities under various conditions are compared. The effect of other impurities on fluoride removal has also been discussed. This survey showed that various adsorbents, especially binary and trimetal oxides and hydroxides, have good potential for the fluoride removal from aquatic environments.
Collapse
Affiliation(s)
- Mirna Habuda-Stanić
- Department of Chemistry and Ecology, Faculty of Food Technology, Josip Juraj Strossmayer University of Osijek, Franje Kuhača 20, HR-31000 Osijek, Croatia.
| | - Maja Ergović Ravančić
- Department of Food Technology, University of Applied Sciences in Požega, Vukovarska 17, HR-34000 Požega, Croatia.
| | - Andrew Flanagan
- HSE Public Analyst's Laboratory Galway, University College Hospital, Seamus Quirke Road, Galway, Ireland.
| |
Collapse
|
31
|
Ma W, Lv T, Song X, Cheng Z, Duan S, Xin G, Liu F, Pan D. Characteristics of selective fluoride adsorption by biocarbon-Mg/Al layered double hydroxides composites from protein solutions: kinetics and equilibrium isotherms study. JOURNAL OF HAZARDOUS MATERIALS 2014; 268:166-176. [PMID: 24486617 DOI: 10.1016/j.jhazmat.2014.01.013] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/04/2013] [Revised: 01/04/2014] [Accepted: 01/08/2014] [Indexed: 06/03/2023]
Abstract
In the study, two novel applied biocarbon-Mg/Al layered double hydroxides composites (CPLDH and CPLDH-Ca) were successfully prepared and characterized by TEM, ICP-AES, XFS, EDS, FTIR, XRD, BET and pHpzc. The fluoride removal efficiency (RF) and protein recovery ratio (RP) of the adsorbents were studied in protein systems of lysozyme (LSZ) and bovine serum albumin (BSA). The results showed that the CPLDH-Ca presented remarkable performance for selective fluoride removal from protein solution. It reached the maximum RF of 92.1% and 94.8% at the CPLDH-Ca dose of 2.0g/L in LSZ and BSA system, respectively. The RP in both systems of LSZ and BSA were more than 90%. Additionally, the RP of CPLDH-Ca increased with the increase of ionic strengths, and it almost can be 100% with more than 93% RF. Fluoride adsorption by the CPLDH-Ca with different initial fluoride concentrations was found to obey the mixed surface reaction and diffusion controlled adsorption kinetic model, and the overall reaction rate is probably controlled by intra-particle diffusion, boundary layer diffusion and reaction process. The adsorption isotherms of fluoride in BSA system fit the Langmuir-Freundlich model well. The BSA has synergistic effect on fluoride adsorption and the degree increased with the increase of the initial BSA concentration.
Collapse
Affiliation(s)
- Wei Ma
- Department of Chemistry, Dalian University of Technology, Dalian 116023, PR China.
| | - Tengfei Lv
- Department of Chemistry, Dalian University of Technology, Dalian 116023, PR China
| | - Xiaoyan Song
- Department of Chemistry, Dalian University of Technology, Dalian 116023, PR China
| | - Zihong Cheng
- Department of Chemistry, Dalian University of Technology, Dalian 116023, PR China
| | - Shibo Duan
- Department of Chemistry, Dalian University of Technology, Dalian 116023, PR China
| | - Gang Xin
- Department of Chemistry, Dalian University of Technology, Dalian 116023, PR China
| | - Fujun Liu
- Dalian Ocean Fishery Group of Corporations, Dalian 116023, PR China
| | - Decong Pan
- Dalian Ocean Fishery Group of Corporations, Dalian 116023, PR China
| |
Collapse
|
32
|
Mostafaei F, McNeill FE, Chettle DR, Prestwich WV. Improvements in anin vivoneutron activation analysis (NAA) method for the measurement of fluorine in human bone. Physiol Meas 2013; 34:1329-41. [DOI: 10.1088/0967-3334/34/10/1329] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
|
33
|
Mostafaei F, McNeill FE, Chettle DR, Prestwich WV, Inskip M. Design of a phantom equivalent to measure bone-fluorine in a human's hand via delayed neutron activation analysis. Physiol Meas 2013; 34:503-12. [DOI: 10.1088/0967-3334/34/5/503] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
|
34
|
Battaleb-Looie S, Moore F, Malde M, Jacks G. Fluoride in groundwater, dates and wheat: Estimated exposure dose in the population of Bushehr, Iran. J Food Compost Anal 2013. [DOI: 10.1016/j.jfca.2012.08.001] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
35
|
Ghosh A, Mukherjee K, Ghosh SK, Saha B. Sources and toxicity of fluoride in the environment. RESEARCH ON CHEMICAL INTERMEDIATES 2012. [DOI: 10.1007/s11164-012-0841-1] [Citation(s) in RCA: 111] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
36
|
Chamberlain M, Gräfe JL, Byun SH, Chettle DR, Egden LM, Orchard GM, Webber CE, McNeill FE. The feasibility ofin vivoquantification of bone-fluorine in humans by delayed neutron activation analysis: a pilot study. Physiol Meas 2012; 33:243-57. [DOI: 10.1088/0967-3334/33/2/243] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
|
37
|
Gleisner H, Einax JW, Morés S, Welz B, Carasek E. A fast and accurate method for the determination of total and soluble fluorine in toothpaste using high-resolution graphite furnace molecular absorption spectrometry and its comparison with established techniques. J Pharm Biomed Anal 2011; 54:1040-6. [DOI: 10.1016/j.jpba.2010.12.013] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2010] [Revised: 12/08/2010] [Accepted: 12/08/2010] [Indexed: 10/18/2022]
|
38
|
Martinez-Mier EA, Kelly SA, Eckert GJ, Jackson RD. Comparison of a dietary survey and the duplicate plate method for determining dietary fluoride ingested by young children: a pilot study. Int J Paediatr Dent 2009; 19:99-107. [PMID: 19207734 DOI: 10.1111/j.1365-263x.2008.00957.x] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
BACKGROUND Investigators have attempted to establish the diet's contribution to the total body burden of fluoride in response to a reported trend towards an increase in fluoride intake. AIM The aim of this study was to compare the suitability of two methods to collect dietary data for fluoride intake assessment. DESIGN Assessments were made in 12 children using the duplicate plate and dietary diary methods following a randomized cross-over design. Foods and beverages were analysed for fluoride, and total fluoride intake per day was calculated. Results from each method were compared. RESULTS Mean beverage fluoride intake was estimated at 316 +/- 120 and 422 +/- 195 microg/day utilizing the diary and duplicate plate methods, respectively. Mean food fluoride intake was estimated at 188 +/- 48 microg/day using the diary, whereas it was 130 +/- 41 microg using the duplicate plate method. Total fluoride intake was 504 +/- 138 and 552 +/- 192 microg/day utilizing the diary and duplicate methods. Large variations in daily fluoride intake from both beverages and food were observed between and within children. CONCLUSIONS Both methods had inherent shortcomings and sources of error. The duplicate method was more labour intensive and costly; however, the diary method required a large number of assumptions. A combination of both methods seems to be most suitable to obtain reliable data.
Collapse
Affiliation(s)
- E Angeles Martinez-Mier
- Department of Preventive and Community Dentistry, Indiana University School of Dentistry, Indianapolis, IN 46202, USA.
| | | | | | | |
Collapse
|
39
|
Singh B, Gaur S, Garg VK. Fluoride in drinking water and human urine in Southern Haryana, India. JOURNAL OF HAZARDOUS MATERIALS 2007; 144:147-51. [PMID: 17118549 DOI: 10.1016/j.jhazmat.2006.10.010] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/09/2006] [Revised: 09/29/2006] [Accepted: 10/03/2006] [Indexed: 05/12/2023]
Abstract
The objective of this study was to determine the fluoride content in drinking water and urine samples of adolescent males aged 11-16 years living in Southern Haryana, India. A total of 30 drinking water sources in the studied habitations were assessed for fluoride contamination. Fluoride was estimated in the urine of 400 male children randomly selected from these habitations. The fluoride concentration in drinking water and urine samples was determined using USEPA fluoride ion selective electrode method. The mean fluoride concentration in drinking water samples of Pataudi, Haily Mandi and Harsaru villages was 1.68+/-0.35, 3.22+/-1.18 and 1.78+/-0.12 mg/l, respectively. The mean urinary fluoride concentration was 2.26+/-0.024 mg/l at Pataudi, 2.48+/-0.77 mg/l at Haily Mandi and 2.43+/-0.84 mg/l at Harsaru village. The higher fluoride levels in the urine of children may be associated to higher fluoride levels in drinking water. The accuracy of measurements was assessed with known addition method in water and urine. Mean fluoride recovery was 98.0 and 99.1% in water and urine. The levels obtained were reproducible with in +/-3% error limit.
Collapse
Affiliation(s)
- Bhupinder Singh
- Department of Environmental Science and Engineering, Guru Jambheshwar University of Science and Technology, Hisar 125001, Haryana, India
| | | | | |
Collapse
|