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Wang R, Gong W, Jiang Y, Yin Q, Wang Z, Wu J, Zhang M, Li M, Liu Y, Wang J, Chen Y, Ji Y. Fluoride exposure during puberty induces testicular impairment via ER stress-triggered apoptosis in mice. Food Chem Toxicol 2024; 189:114773. [PMID: 38823497 DOI: 10.1016/j.fct.2024.114773] [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: 03/23/2024] [Revised: 05/15/2024] [Accepted: 05/28/2024] [Indexed: 06/03/2024]
Abstract
Fluoride, a ubiquitous environmental compound, carries significant health risks at excessive levels. This study investigated the reproductive toxicity of fluoride exposure during puberty in mice, focusing on its impact on testicular development, spermatogenesis, and underlying mechanisms. The results showed that fluoride exposure during puberty impaired testicular structure, induced germ cell apoptosis, and reduced sperm counts in mice. Additionally, the SOD activity and GSH content were significantly decreased, while MDA content was significantly elevated in the NaF group. Immunohistochemistry showed an increase in the number of cells positive for GRP78, a key ER stress marker. Moreover, qRT-PCR and Western blot analyses confirmed the upregulation of both Grp78 mRNA and protein expression, as well as increased mRNA expression of other ER stress-associated genes (Grp94, chop, Atf6, Atf4, and Xbp1) and enhanced protein expression of phosphorylated PERK, IRE1α, eIF2α, JNK, XBP-1, ATF-6α, ATF-4, and CHOP. In conclusion, our findings demonstrate that fluoride exposure during puberty impairs testicular structure, induces germ cell apoptosis, and reduces sperm counts in mice. ER stress may participate in testicular cell apoptosis, and contribute to the testicular damage and decreased sperm counts induced by fluoride.
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Affiliation(s)
- Rong Wang
- Department of Health Inspection and Quarantine, School of Public Health, Anhui Medical University, Hefei, Anhui, China; School of Basic Medical Sciences, Anhui Medical University, Hefei, Anhui, China
| | - Wenjing Gong
- Department of Health Inspection and Quarantine, School of Public Health, Anhui Medical University, Hefei, Anhui, China
| | - Yumeng Jiang
- Department of Health Inspection and Quarantine, School of Public Health, Anhui Medical University, Hefei, Anhui, China
| | - Qizi Yin
- Department of Health Inspection and Quarantine, School of Public Health, Anhui Medical University, Hefei, Anhui, China
| | - Ziyue Wang
- Department of Health Inspection and Quarantine, School of Public Health, Anhui Medical University, Hefei, Anhui, China
| | - Jie Wu
- Department of Health Inspection and Quarantine, School of Public Health, Anhui Medical University, Hefei, Anhui, China
| | - Mingming Zhang
- Department of Health Inspection and Quarantine, School of Public Health, Anhui Medical University, Hefei, Anhui, China
| | - Mengyuan Li
- Department of Health Inspection and Quarantine, School of Public Health, Anhui Medical University, Hefei, Anhui, China
| | - Yehao Liu
- Department of Health Inspection and Quarantine, School of Public Health, Anhui Medical University, Hefei, Anhui, China
| | - Juan Wang
- Department of Health Inspection and Quarantine, School of Public Health, Anhui Medical University, Hefei, Anhui, China.
| | - Yuanhua Chen
- School of Basic Medical Sciences, Anhui Medical University, Hefei, Anhui, China.
| | - Yanli Ji
- Department of Health Inspection and Quarantine, School of Public Health, Anhui Medical University, Hefei, Anhui, China; Anhui Provincial Key Laboratory of Population Health and Aristogenics, Key Laboratory of Environmental Toxicology of Anhui Higher Education Institutes, Anhui Medical University, Hefei Anhui, China.
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2
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Sequeda-Castañeda LG, Suárez-Carvajal LF, Téllez-Corral MA, Gutiérrez-Prieto SJ, Méndez-Pinzón HA. Evaluation of Ilex guayusa and Piper marginatum Extract Cytotoxicity on Human Dental Pulp Mesenchymal Stem Cells. Dent J (Basel) 2024; 12:189. [PMID: 38920890 PMCID: PMC11202831 DOI: 10.3390/dj12060189] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2024] [Revised: 06/13/2024] [Accepted: 06/18/2024] [Indexed: 06/27/2024] Open
Abstract
BACKGROUND Amelogenesis imperfecta is a hereditary disorder affecting dental enamel. Among its phenotypes, hypocalcified AI is characterized by mineral deficiency, leading to tissue wear and, consequently, dental sensitivity. Excessive fluoride intake (through drinking water, fluoride supplements, toothpaste, or by ingesting products such as pesticides or insecticides) can lead to a condition known as dental fluorosis, which manifests as stains and teeth discoloration affecting their structure. Our recent studies have shown that extracts from Colombian native plants, Ilex guayusa and Piper marginatum, deposit mineral ions such as phosphate and orthophosphate into the dental enamel structure; however, it is unknown whether these extracts produce toxic effects on the dental pulp. OBJECTIVE To assess cytotoxicity effects on human dental pulp stem cells (hDPSCs) exposed to extracts isolated from I. guayusa and P. marginatum and, hence, their safety for clinical use. METHODS Raman spectroscopy, fluorescence microscopy, and flow cytometry techniques were employed. For Raman spectroscopy, hDPSCs were seeded onto nanobiochips designed to provide surface-enhanced Raman spectroscopy (SERS effect), which enhances their Raman signal by several orders of magnitude. After eight days in culture, I. guayusa and P. marginatum extracts at different concentrations (10, 50, and 100 ppm) were added. Raman measurements were performed at 0, 12, and 24 h following extract application. Fluorescence microscopy was conducted using an OLIMPUS fv1000 microscope, a live-dead assay was performed using a kit employing a BD FACS Canto TM II flow cytometer, and data analysis was determined using a FlowJo program. RESULTS The Raman spectroscopy results showed spectra consistent with viable cells. These findings were corroborated using fluorescence microscopy and flow cytometry techniques, confirming high cellular viability. CONCLUSIONS The analyzed extracts exhibited low cytotoxicity, suggesting that they could be safely applied on enamel for remineralization purposes. The use of nanobiochips for SERS effect improved the cell viability assessment.
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Affiliation(s)
- Luis G. Sequeda-Castañeda
- Department of Chemistry, School of Sciences, Pontificia Universidad Javeriana, Bogotá 110231, Colombia;
| | - Luisa F. Suárez-Carvajal
- Oral Rehabilitation, School of Dentistry, Pontificia Universidad Javeriana, Bogotá 110231, Colombia;
| | | | | | - Henry A. Méndez-Pinzón
- Department of Physics, School of Sciences, Pontificia Universidad Javeriana, Bogotá 110231, Colombia
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Kassim S, Alsharif AT. The factors associated with the knowledge of brushing teeth with fluoridated toothpaste among high school students in Al-Madinah, Saudi Arabia. FRONTIERS IN ORAL HEALTH 2024; 5:1416718. [PMID: 38966591 PMCID: PMC11222559 DOI: 10.3389/froh.2024.1416718] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2024] [Accepted: 05/30/2024] [Indexed: 07/06/2024] Open
Abstract
Objective The use of fluoridated toothpaste (FT) is essential for controlling caries. This analytical cross-sectional study aimed to determine the proportion of students who brushed their teeth with fluoridated toothpaste/or do not know the content at least once a day and to determine the factors associated with the knowledge of brushing teeth with FT. Methods An anonymous questionnaire was distributed during the academic year 2019-2020 among 439 high school students. The data collected included sociodemographic characteristics and oral-health-related variables [e.g., brushing teeth, knowledge of the effect of fluoride on caries (KEFC) and dental service utilisation (DSU)]. The dependent variable was the knowledge of using FT when brushing teeth (Yes or do not know). Descriptive, bivariate, and logistic regression analysis were performed. Results The response rate was 98% (n = 432) and usable data was 88% (n = 385). The median (IQR) age of the students was 16.00 (1) years, and 190 (47%) were males. Eighty eight percent of the students brushed their teeth with toothpaste daily with no knowledge of toothpaste content and only 86 (21.8%) knew the content of the toothpaste used for brushing their teeth i.e., FT. The multivariable analyses revealed an association of family income and KEFC with brushing teeth with FT [adjusted odds ratio (AOR): 1.98, 95% confidence interval (CI): 1.14-3.43, p = 0.015 and AOR = 6.11, 95% CI: 3.45-10.83, p < 0.001, respectively]. Conclusions While the brushing and use of toothpaste among high school students was common, the knowledge of the content of toothpaste used for brushing teeth was less common and was associated with family income and KEFC.
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Affiliation(s)
- Saba Kassim
- Department of Preventive Dental Sciences, College of Dentistry, Taibah University, Al-Madinah Al-Munawwarah, Saudi Arabia
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4
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Zhang X, Cao J, Chen J, Wang G, Li L, Wei X, Zhang R. Combined Effects of Fluoride and Dietary Seleno-L-Methionine at Environmentally Relevant Concentrations on Female Zebrafish (Danio rerio) Liver: Histopathological Damages, Oxidative Stress and Inflammation. Biol Trace Elem Res 2024; 202:2314-2326. [PMID: 37682395 DOI: 10.1007/s12011-023-03837-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/05/2023] [Accepted: 08/29/2023] [Indexed: 09/09/2023]
Abstract
Fluoride, a global environmental pollutant, is ubiquitous in aquatic environments and coexists with selenium, which can cause complex effects on exposed organisms. However, data on the interaction of fluoride and selenium remain scarce. In this study, female zebrafish (Danio rerio) were exposed to fluoride (80 mg/L sodium fluoride) and/or dietary selenomethionine (Se-Met) for 30, 60 and 90 days, the effects on the liver of zebrafish were investigated. The results indicated that an increase in fluoride burden, inhibited growth and impaired liver morphology were recorded after fluoride exposure. Furthermore, fluoride alone caused oxidative stress and inflammation in the liver, as reflected by the increase in ROS and MDA contents, the reduction of anti-oxidative enzymes, the altered immune related enzymes (ACP, AKP, LZM and MPO) and the expression of IL-6, IL-1β, TNF-α, IL-10 and TGF-β. In contrast, co-exposure to fluoride and Se-Met decreased fluoride burden and restored growth. Furthermore, dietary Se-Met alleviated oxidative stress, inflammation and impaired morphology in liver trigger by fluoride. However, dietary Se-Met alone increased the activities of SOD and CAT. These results demonstrate that the protective effect of dietary Se-Met against chronic fluoride toxicity at a certain level.
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Affiliation(s)
- Xiulin Zhang
- College of Veterinary Medicine, Shanxi Agricultural University, Taigu, 030801, Shanxi, China
- College of Animal Science and Veterinary Medicine, Henan Institute of Science and Technology, Xinxiang, 453003, Henan, China
| | - Jinling Cao
- College of Food Science and Technology, Shanxi Agricultural University, Taigu, 030801, Shanxi, China.
| | - Jianjie Chen
- College of Veterinary Medicine, Shanxi Agricultural University, Taigu, 030801, Shanxi, China.
| | - Guodong Wang
- School of Biology and Food Engineering, Anyang Institute of Technology, Anyang, 455000, Henan, China
| | - Lijuan Li
- College of Food and Environment, Jinzhong College of Information, Taigu, 030801, Shanxi, China
| | - Xiaobing Wei
- College of Animal Science and Veterinary Medicine, Henan Institute of Science and Technology, Xinxiang, 453003, Henan, China
| | - Runxiao Zhang
- College of Animal Science and Veterinary Medicine, Henan Institute of Science and Technology, Xinxiang, 453003, Henan, China
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5
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Basu H, Amarnath M, Modak B, Parab H, Basu R, Goyal S, Saha S, Singh S, Patra CN. Development of magnetic La doped Al 2O 3 core-shell nanoparticle loaded hydrogel for selective recovery of fluoride from aquatic medium. CHEMOSPHERE 2024; 353:141504. [PMID: 38403120 DOI: 10.1016/j.chemosphere.2024.141504] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/04/2023] [Revised: 02/15/2024] [Accepted: 02/19/2024] [Indexed: 02/27/2024]
Abstract
The selective removal of pollutants from water bodies is regarded as a conciliation between the rapid expansion of industrial activities and need of clean water for sustainability. Fluoride is one such geogenic pollutant, and various materials have already been reported. Developing an efficient field employable material is however a challenge. Herein, we report the synthesis and competencies of strategically designed magnetic La-doped Al2O3 core-shell nanoparticle loaded polymeric nanohybrid as a benchmark fluoride sorbent. A facile synthesis strategy involved fabrication of Fe3O4 magnetic core followed by growth of La doped Al2O3 shell using sol-gel method. Doping of La2O3 into Al2O3 structure was optimised (6%), resulting in Fe3O4-Al0.94 La0.06O1.5 core-shell particles which provided exceptional fluoride affinity. The obtained magnetic Fe3O4-Al0.94La0.06O1.5 core-shell nanoparticles were then loaded (22%) into alginate to form cross-linked hydrogel beads (Fe3O4-Al0.94 La0.06 O1.5-Ca-ALG). These prepared hydrogel beads were characterised and utilized for selective recovery of fluoride under different ambient conditions. Driving forces for enhanced fluoride uptake by La doped Al2O3 were investigated and explained with the help of both experimental observation and theoretical simulation. Density functional theory calculations indicated significant expansion in the cell volume of Al2O3 due to La doping which favoured the fluoride sorption. The calculated defect formation energy for the incorporation of F into Al2O3 was found to decrease in the presence of La. XPS analysis suggested direct interaction of fluoride with Al, forming Al-F bond and breaking Al-O bond. Different vital parameters for uptake were optimised. Also, kinetics, isotherm and diffusion models were evaluated. Developed hydrogel beads attained record sorption capacity of 132.3 mgg-1 for fluoride. Overall, excellent stability, no leaching of constituents, effectiveness for selective fluoride recovery from groundwater, brand it a perfect epitome of sustainable water treatment application.
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Affiliation(s)
- Hirakendu Basu
- Analytical Chemistry Division, Bhabha Atomic Research Centre, Trombay, Mumbai, 400085, India; Homi Bhabha National Institute, Anushaktinagar, Mumbai, 400094, India.
| | - M Amarnath
- Analytical Chemistry Division, Bhabha Atomic Research Centre, Trombay, Mumbai, 400085, India
| | - Brindaban Modak
- Homi Bhabha National Institute, Anushaktinagar, Mumbai, 400094, India; Chemistry Division, Bhabha Atomic Research Centre, Trombay, Mumbai, 400085, India
| | - Harshala Parab
- Analytical Chemistry Division, Bhabha Atomic Research Centre, Trombay, Mumbai, 400085, India
| | - Ranita Basu
- Homi Bhabha National Institute, Anushaktinagar, Mumbai, 400094, India; Technical Physics Division, Bhabha Atomic Research Centre, Trombay, Mumbai, 400085, India
| | - Sakshi Goyal
- Department of Chemistry, Sardar Vallabhbhai National Institute of Technology, Surat, 395007, India
| | - Sudeshna Saha
- Analytical Chemistry Division, Bhabha Atomic Research Centre, Trombay, Mumbai, 400085, India; Homi Bhabha National Institute, Anushaktinagar, Mumbai, 400094, India
| | - Shweta Singh
- Analytical Chemistry Division, Bhabha Atomic Research Centre, Trombay, Mumbai, 400085, India; Homi Bhabha National Institute, Anushaktinagar, Mumbai, 400094, India
| | - Chandra Nath Patra
- Analytical Chemistry Division, Bhabha Atomic Research Centre, Trombay, Mumbai, 400085, India; Homi Bhabha National Institute, Anushaktinagar, Mumbai, 400094, India
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6
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Pontigo-Loyola AP, Mendoza-Rodriguez M, de la Rosa-Santillana R, Rivera-Pacheco MG, Islas-Granillo H, Casanova-Rosado JF, Márquez-Corona MDL, Navarrete-Hernández JDJ, Medina-Solís CE, Manton DJ. Control of Dental Caries in Children and Adolescents Using Fluoride: An Overview of Community-Level Fluoridation Methods. Pediatr Rep 2024; 16:243-253. [PMID: 38651460 PMCID: PMC11036215 DOI: 10.3390/pediatric16020021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/29/2023] [Revised: 03/20/2024] [Accepted: 03/21/2024] [Indexed: 04/25/2024] Open
Abstract
The maintenance of oral health is a crucial aspect of general well-being; however, a significant proportion of the worldwide population experiences a range of oral diseases. Dental caries is a highly prevalent non-communicable disease globally, especially in children and adolescents. Fluoride is involved in the control of dental caries, primarily by decreasing the critical pH for dental hard tissue dissolution and decreasing enamel solubility. Due to the substantial data supporting the efficacy of fluoride in controlling dental caries, many community-level fluoridation initiatives have been devised and executed as global public health preventive interventions. These initiatives encompass the fluoridation of water, salt, and milk. Water fluoridation is considered safe and effective when fluoride levels are maintained within the recommended range (0.6 to 1.1 mg/L). Salt fluoridation has a cariostatic potential similar to that of water fluoridation, and a fluoride concentration of 250 micrograms per gram in salt is not associated with an increased risk of developing dental fluorosis. However, there is currently an effort to reduce the consumption of table salt in order to mitigate the harmful effects of excessive salt consumption. It has been hypothesized that fluoride food supplementation, such as fluoridated milk, is associated with a decrease in caries experience in permanent teeth; however, the effect is not clear in primary teeth. Public-level fluoride interventions are more cost-effective than the operative care of caries lesions and limit the burden of care. The administration of fluorides should be conducted using safe methods, limiting ingestion, and adhering to the guidelines set by international and national health agencies in each country. This is particularly important when considering children with developing dentitions. Fluoride is an important tool in the control of dental caries, but it is crucial to combine it with good oral hygiene, a healthy diet, and regular visits to a dental professional to maintain long-term oral health.
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Affiliation(s)
- América Patricia Pontigo-Loyola
- Academic Area of Dentistry of Health Sciences Institute, Autonomous University of Hidalgo State, Pachuca 42160, Mexico; (A.P.P.-L.); (M.M.-R.); (R.d.l.R.-S.); (M.G.R.-P.); (H.I.-G.); (M.d.L.M.-C.)
| | - Martha Mendoza-Rodriguez
- Academic Area of Dentistry of Health Sciences Institute, Autonomous University of Hidalgo State, Pachuca 42160, Mexico; (A.P.P.-L.); (M.M.-R.); (R.d.l.R.-S.); (M.G.R.-P.); (H.I.-G.); (M.d.L.M.-C.)
| | - Rubén de la Rosa-Santillana
- Academic Area of Dentistry of Health Sciences Institute, Autonomous University of Hidalgo State, Pachuca 42160, Mexico; (A.P.P.-L.); (M.M.-R.); (R.d.l.R.-S.); (M.G.R.-P.); (H.I.-G.); (M.d.L.M.-C.)
| | - Maria Gracia Rivera-Pacheco
- Academic Area of Dentistry of Health Sciences Institute, Autonomous University of Hidalgo State, Pachuca 42160, Mexico; (A.P.P.-L.); (M.M.-R.); (R.d.l.R.-S.); (M.G.R.-P.); (H.I.-G.); (M.d.L.M.-C.)
- Department of Cariology, Centre for Dentistry and Oral Hygiene, University Medical Centre Groningen, University of Groningen, 9713 GZ Groningen, The Netherlands;
| | - Horacio Islas-Granillo
- Academic Area of Dentistry of Health Sciences Institute, Autonomous University of Hidalgo State, Pachuca 42160, Mexico; (A.P.P.-L.); (M.M.-R.); (R.d.l.R.-S.); (M.G.R.-P.); (H.I.-G.); (M.d.L.M.-C.)
| | | | - María de Lourdes Márquez-Corona
- Academic Area of Dentistry of Health Sciences Institute, Autonomous University of Hidalgo State, Pachuca 42160, Mexico; (A.P.P.-L.); (M.M.-R.); (R.d.l.R.-S.); (M.G.R.-P.); (H.I.-G.); (M.d.L.M.-C.)
| | - José de Jesús Navarrete-Hernández
- Academic Area of Dentistry of Health Sciences Institute, Autonomous University of Hidalgo State, Pachuca 42160, Mexico; (A.P.P.-L.); (M.M.-R.); (R.d.l.R.-S.); (M.G.R.-P.); (H.I.-G.); (M.d.L.M.-C.)
| | - Carlo Eduardo Medina-Solís
- Academic Area of Dentistry of Health Sciences Institute, Autonomous University of Hidalgo State, Pachuca 42160, Mexico; (A.P.P.-L.); (M.M.-R.); (R.d.l.R.-S.); (M.G.R.-P.); (H.I.-G.); (M.d.L.M.-C.)
- Advanced Studies and Research Center in Dentistry “Dr. Keisaburo Miyata” of Faculty of Dentistry, Autonomous University of the State of Mexico, Toluca 50130, Mexico
| | - David J. Manton
- Department of Cariology, Centre for Dentistry and Oral Hygiene, University Medical Centre Groningen, University of Groningen, 9713 GZ Groningen, The Netherlands;
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7
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Berger MM, Shenkin A, Dizdar OS, Amrein K, Augsburger M, Biesalski HK, Bischoff SC, Casaer MP, Gundogan K, Lepp HL, de Man AME, Muscogiuri G, Pietka M, Pironi L, Rezzi S, Schweinlin A, Cuerda C. ESPEN practical short micronutrient guideline. Clin Nutr 2024; 43:825-857. [PMID: 38350290 DOI: 10.1016/j.clnu.2024.01.030] [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: 01/10/2024] [Accepted: 01/27/2024] [Indexed: 02/15/2024]
Abstract
BACKGROUND Trace elements and vitamins, named together micronutrients (MNs), are essential for human metabolism. The importance of MNs in common pathologies is recognized by recent research, with deficiencies significantly impacting the outcome. OBJECTIVE This short version of the guideline aims to provide practical recommendations for clinical practice. METHODS An extensive search of the literature was conducted in the databases Medline, PubMed, Cochrane, Google Scholar, and CINAHL for the initial guideline. The search focused on physiological data, historical evidence (for papers published before PubMed release in 1996), and observational and/or randomized trials. For each MN, the main functions, optimal analytical methods, impact of inflammation, potential toxicity, and provision during enteral or parenteral nutrition were addressed. The SOP wording was applied for strength of recommendations. RESULTS The limited number of interventional trials prevented meta-analysis and led to a low level of evidence for most recommendations. The recommendations underwent a consensus process, which resulted in a percentage of agreement (%): strong consensus required of >90 % of votes. Altogether the guideline proposes 3 general recommendations and specific recommendations for the 26 MNs. Monitoring and management strategies are proposed. CONCLUSION This short version of the MN guideline should facilitate handling of the MNs in at-risk diseases, whilst offering practical advice on MN provision and monitoring during nutritional support.
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Affiliation(s)
- Mette M Berger
- Faculty of Biology & Medicine, Lausanne University, Lausanne, Switzerland.
| | - Alan Shenkin
- Institute of Aging and Chronic Disease, University of Liverpool, Liverpool, UK.
| | - Oguzhan Sıtkı Dizdar
- Department of Internal Medicine and Clinical Nutrition Unit, University of Health Sciences Kayseri City Training and Research Hospital, Kayseri, Turkey.
| | - Karin Amrein
- Medical University of Graz, Department of Internal Medicine, Division of Endocrinology and Diabetology, Austria.
| | - Marc Augsburger
- University Centre of Legal Medicine Lausanne-Geneva, Lausanne University Hospital and University of Lausanne, Geneva University Hospital and University of Geneva, Lausanne-Geneva, Switzerland.
| | | | - Stephan C Bischoff
- Institute of Nutritional Medicine, University of Hohenheim, Stuttgart, Germany.
| | - Michael P Casaer
- KU Leuven, Department of Cellular and Molecular Medicine, Laboratory of Intensive Care Medicine, Leuven, Belgium.
| | - Kursat Gundogan
- Division of Intensive Care Medicine, Department of Internal Medicine, Erciyes University School of Medicine, Kayseri, Turkey.
| | | | - Angélique M E de Man
- Department of Intensive Care Medicine, Research VUmc Intensive Care (REVIVE), Amsterdam Cardiovascular Science (ACS), Amsterdam Infection and Immunity Institute (AI&II), Amsterdam Medical Data Science (AMDS), Amsterdam UMC, Vrije Universiteit Amsterdam, De Boelelaan 1117, 1081 HV Amsterdam, the Netherlands.
| | - Giovanna Muscogiuri
- Dipartimento di Medicina Clinica e Chirurgia, Sezione di Endocrinologia, Università di Napoli (Federico II), Naples, Italy; United Nations Educational, Scientific and Cultural Organization (UNESCO) Chair for Health Education and Sustainable Development, Federico II University, Naples, Italy.
| | - Magdalena Pietka
- Pharmacy Department, Stanley Dudrick's Memorial Hospital, Skawina, Poland.
| | - Loris Pironi
- Department of Medical and Surgical Sciences, University of Bologna, Italy; Centre for Chronic Intestinal Failure, IRCCS AOUBO, Bologna, Italy.
| | - Serge Rezzi
- Swiss Nutrition and Health Foundation, Epalinges, Switzerland.
| | - Anna Schweinlin
- Institute of Nutritional Medicine, University of Hohenheim, Stuttgart, Germany.
| | - Cristina Cuerda
- Departamento de Medicina, Universidad Complutense de Madrid, Nutrition Unit, Hospital General Universitario Gregorio Marañón, Madrid, Spain.
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8
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Jinyi L, Keyu Y, Shanshan D, Shuyang H, Ruirui L, Qingyu G, Fei L. ERS Mediated by GRP-78/PERK/CHOP Signaling Is Involved in Fluoride-Induced Ameloblast Apoptosis. Biol Trace Elem Res 2024; 202:1103-1114. [PMID: 37410266 DOI: 10.1007/s12011-023-03746-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/24/2023] [Accepted: 06/24/2023] [Indexed: 07/07/2023]
Abstract
Fluoride can be widely ingested from the environment, and its excessive intake could result in adverse effects. Dental fluorosis is an early sign of fluoride toxicity which can cause esthetic and functional problems. Though apoptosis in ameloblasts is one of the potential mechanisms, the specific signal cascade is in-conclusive. High-throughput sequencing and molecular biological techniques were used in this study to explore the underlying pathogenesis of dental fluorosis, for its prevention and treatment. A fluorosis cell model was established. Viability and apoptosis rate of mouse ameloblast-derived cell line (LS8 cells) was measured using cell counting kit-8 (CCK-8) assay and flow cytometry analysis. Cells were harvested with or without 2-mM sodium fluoride (NaF) stimulation for high-throughput sequencing. Based on the sequencing data, subcellular structures, endoplasmic reticulum stress (ERS), and apoptosis related biomarkers were verified using transmission electron microscopy, quantitative real-time polymerase chain reaction, and Western blotting techniques. Expression of ERS markers, apoptosis related proteins, and enamel formation enzymes were detected using Western blotting after addition of 4-phenylbutyrate (4-PBA). NaF-inhibited LS8 cells displayed time- and dose- dependent viability. Additionally, apoptosis and morphological changes were observed. RNA-sequencing data showed that protein processing in endoplasmic reticulum was obviously affected. ERS and apoptosis were induced by excessive NaF. Downregulation of kallikrein-related peptidase 4 (KLK4) was also observed. Inhibition of ERS by 4-PBA rescued the apoptotic and functional protein changes in cells. Excessive fluoride induces apoptosis by activating ERS, which is mediated by GRP-78/PERK/CHOP signaling. Key proteinase is present in maturation-stage enamel; KLK4 was also affected by fluoride, but rescued by 4-PBA. This study presents a possibility for therapeutic strategies for dental fluorosis, while further exploration is required.
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Affiliation(s)
- Li Jinyi
- Key laboratory of Shaanxi Province for Craniofacial Precision Medicine Research, College of Stomatology, Xi'an Jiaotong University, Xi'an, 710004, People's Republic of China
- Department of Pediatric Dentistry, College of Stomatology, Xi'an Jiaotong University, Xi Wu Road No.98, Xi'an 710004, 710041, People's Republic of China
| | - Yang Keyu
- National Regional Children's Medical Center (Northwest), Xi'an Children's Hospital, Affiliated Children's Hospital of Xi'an Jiaotong University, Xi'an, 710003, People's Republic of China
| | - Dai Shanshan
- Key laboratory of Shaanxi Province for Craniofacial Precision Medicine Research, College of Stomatology, Xi'an Jiaotong University, Xi'an, 710004, People's Republic of China
- Department of Pediatric Dentistry, College of Stomatology, Xi'an Jiaotong University, Xi Wu Road No.98, Xi'an 710004, 710041, People's Republic of China
| | - He Shuyang
- Faculty of dentistry, The university of Hong Kong, Hong Kong, SAR, People's Republic of China
| | - Liu Ruirui
- Key laboratory of Shaanxi Province for Craniofacial Precision Medicine Research, College of Stomatology, Xi'an Jiaotong University, Xi'an, 710004, People's Republic of China
- Department of Prosthodontics, College of Stomatology, Xi'an Jiaotong University, Xi'an, 710004, People's Republic of China
| | - Guo Qingyu
- Key laboratory of Shaanxi Province for Craniofacial Precision Medicine Research, College of Stomatology, Xi'an Jiaotong University, Xi'an, 710004, People's Republic of China.
- Department of Pediatric Dentistry, College of Stomatology, Xi'an Jiaotong University, Xi Wu Road No.98, Xi'an 710004, 710041, People's Republic of China.
| | - Liu Fei
- Key laboratory of Shaanxi Province for Craniofacial Precision Medicine Research, College of Stomatology, Xi'an Jiaotong University, Xi'an, 710004, People's Republic of China.
- Department of Pediatric Dentistry, College of Stomatology, Xi'an Jiaotong University, Xi Wu Road No.98, Xi'an 710004, 710041, People's Republic of China.
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Chen J, Guo J, Lu X, Yin D, Zhou C, Li Y, Zhou X. Microbiome-friendly PS/PVP electrospun fibrous membrane with antibiofilm properties for dental engineering. Regen Biomater 2024; 11:rbae011. [PMID: 38414799 PMCID: PMC10898674 DOI: 10.1093/rb/rbae011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2023] [Revised: 01/20/2024] [Accepted: 01/27/2024] [Indexed: 02/29/2024] Open
Abstract
Dental caries is one of the most prevalent and biofilm-associated oral diseases in humans. Streptococcus mutans, with a high ability to form biofilms by adhering to hard surfaces, has been established as an important etiological agent for dental caries. Therefore, it is crucial to find a way to prevent the formation of cariogenic biofilm. Here, we report an electrospun fibrous membrane that could inhibit the adhesion and biofilm formation of S. mutans. Also, the polystyrene (PS)/polyvinyl pyrrolidone (PVP) electrospun fibrous membrane altered the 3D biofilm architecture and decreased water-insoluble extracellular polysaccharide production. Notably, the anti-adhesion mechanism which laid in Coulomb repulsion between the negatively charged PS/PVP electrospun fibrous membrane and S. mutans was detected by zeta potential. Furthermore, metagenomics sequencing analysis and CCK-8 assay indicated that PS/PVP electrospun fibrous membrane was microbiome-friendly and displayed no influence on the cell viability of human gingival epithelial cells and human oral keratinocytes. Moreover, an in vitro simulation experiment demonstrated that PS/PVP electrospun fibrous membrane could decrease colony-forming unit counts of S. mutans effectively, and PS/PVP electrospun fibrous membrane carrying calcium fluoride displayed better anti-adhesion ability than that of PS/PVP electrospun fibrous membrane alone. Collectively, this research showed that the PS/PVP electrospun fibrous membrane has potential applications in controlling and preventing dental caries.
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Affiliation(s)
- Jiamin Chen
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Department of Operative Dentistry and Endodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan, 610041, China
| | - Jia Guo
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Department of Operative Dentistry and Endodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan, 610041, China
- Stomatological Hospital affiliated Suzhou Vocational Health College, Department of Operative Dentistry and Endodontics, Suzhou, 215000, China
| | - Xueyun Lu
- College of Chemistry, Sichuan University, Chengdu, Sichuan, 610064, China
| | - Derong Yin
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Department of Operative Dentistry and Endodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan, 610041, China
| | - Cuisong Zhou
- College of Chemistry, Sichuan University, Chengdu, Sichuan, 610064, China
| | - Yuqing Li
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Department of Operative Dentistry and Endodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan, 610041, China
| | - Xuedong Zhou
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Department of Operative Dentistry and Endodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan, 610041, China
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Kumar S, Chhabra V, Mehra M, K S, Kumar B H, Shenoy S, Swamy RS, Murti K, Pai KSR, Kumar N. The fluorosis conundrum: bridging the gap between science and public health. Toxicol Mech Methods 2024; 34:214-235. [PMID: 37921264 DOI: 10.1080/15376516.2023.2268722] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2023] [Accepted: 10/04/2023] [Indexed: 11/04/2023]
Abstract
Fluorosis, a chronic condition brought on by excessive fluoride ingestion which, has drawn much scientific attention and public health concern. It is a complex and multifaceted issue that affects millions of people worldwide. Despite decades of scientific research elucidating the causes, mechanisms, and prevention strategies for fluorosis, there remains a significant gap between scientific understanding and public health implementation. While the scientific community has made significant strides in understanding the etiology and prevention of fluorosis, effectively translating this knowledge into public health policies and practices remains challenging. This review explores the gap between scientific research on fluorosis and its practical implementation in public health initiatives. It suggests developing evidence-based guidelines for fluoride exposure and recommends comprehensive educational campaigns targeting the public and healthcare providers. Furthermore, it emphasizes the need for further research to fill the existing knowledge gaps and promote evidence-based decision-making. By fostering collaboration, communication, and evidence-based practices, policymakers, healthcare professionals, and the public can work together to implement preventive measures and mitigate the burden of fluorosis on affected communities. This review highlighted several vital strategies to bridge the gap between science and public health in the context of fluorosis. It emphasizes the importance of translating scientific evidence into actionable guidelines, raising public awareness about fluoride consumption, and promoting preventive measures at individual and community levels.
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Affiliation(s)
- Sachindra Kumar
- Department of Pharmacology, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education (MAHE), Manipal, India
| | - Vishal Chhabra
- Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education and Research, Hajipur, India
| | - Manmeet Mehra
- Department of Pharmacology, Guru Nanak Dev University, Amritsar, India
| | - Saranya K
- Department of Pharmacy Practice, National Institute of Pharmaceutical Education and Research, Hajipur, India
| | - Harish Kumar B
- Department of Pharmacology, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education (MAHE), Manipal, India
| | - Smita Shenoy
- Department of Pharmacology, Kasturba Medical College Manipal, Manipal Academy of Higher Education, Manipal, India
| | - Ravindra Shantakumar Swamy
- Division of Anatomy, Department of Basic Medical Sciences (DBMS), Manipal Academy of Higher Education (MAHE), Manipal, India
| | - Krishna Murti
- Department of Pharmacy Practice, National Institute of Pharmaceutical Education and Research, Hajipur, India
| | - K Sreedhara Ranganath Pai
- Department of Pharmacology, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education (MAHE), Manipal, India
| | - Nitesh Kumar
- Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education and Research, Hajipur, India
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Iamandii I, De Pasquale L, Giannone ME, Veneri F, Generali L, Consolo U, Birnbaum LS, Castenmiller J, Halldorsson TI, Filippini T, Vinceti M. Does fluoride exposure affect thyroid function? A systematic review and dose-response meta-analysis. ENVIRONMENTAL RESEARCH 2024; 242:117759. [PMID: 38029816 DOI: 10.1016/j.envres.2023.117759] [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: 11/04/2023] [Revised: 11/20/2023] [Accepted: 11/21/2023] [Indexed: 12/01/2023]
Abstract
INTRODUCTION Fluoride exposure may have various adverse health effects, including affecting thyroid function and disease risk, but the pattern of such relation is still uncertain. METHODS We systematically searched human studies assessing the relation between fluoride exposure and thyroid function and disease. We compared the highest versus the lowest fluoride category across these studies, and we performed a one-stage dose-response meta-analysis for aggregated data to explore the shape of the association. RESULTS Most retrieved studies (27 of which with a cross-sectional design) were conducted in Asia and in children, assessing fluoride exposure through its concentrations in drinking water, urine, serum, or dietary intake. Twenty-four studies reported data on thyroid function by measuring thyroid-related hormones in blood (mainly thyroid-stimulating-hormone - TSH), 9 reported data on thyroid disease, and 4 on thyroid volume. By comparing the highest versus the lowest fluoride categories, overall mean TSH difference was 1.05 μIU/mL. Dose-response curve showed no change in TSH concentrations in the lowest water fluoride exposure range, while the hormone levels started to linearly increase around 2.5 mg/L, also dependending on the risk of bias of the included studies. The association between biomarkers of fluoride exposure and TSH was also positive, with little evidence of a threshold. Evidence for an association between fluoride exposure and blood concentrations of thyroid hormones was less evident, though there was an indication of inverse association with triiodothyronine. For thyroid disease, the few available studies suggested a positive association with goiter and with hypothyroidism in both children and adults. CONCLUSIONS Overall, exposure to high-fluoride drinking water appears to non-linearly affect thyroid function and increase TSH release in children, starting above a threshold of exposure, and to increase the risk of some thyroid diseases.
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Affiliation(s)
- Inga Iamandii
- Environmental, Genetic and Nutritional Epidemiology Research Center (CREAGEN), Section of Public Health, Department of Biomedical, Metabolic and Neural Sciences, University of Modena and Reggio Emilia, Modena, Italy
| | - Lisa De Pasquale
- Department of Biomedical, Metabolic and Neural Sciences, University of Modena and Reggio Emilia, Modena, Italy
| | - Maria Edvige Giannone
- Environmental, Genetic and Nutritional Epidemiology Research Center (CREAGEN), Section of Public Health, Department of Biomedical, Metabolic and Neural Sciences, University of Modena and Reggio Emilia, Modena, Italy
| | - Federica Veneri
- Department of Surgery, Medicine, Dentistry and Morphological Sciences with Transplant Surgery, Oncology and Regenerative Medicine Relevance (CHIMOMO), Unit of Dentistry & Oral-Maxillo-Facial Surgery, University of Modena and Reggio Emilia, Modena, Italy; PhD Program in Clinical and Experimental Medicine, Department of Biomedical, Metabolic and Neural Sciences, University of Modena and Reggio Emilia, Modena, Italy
| | - Luigi Generali
- Department of Surgery, Medicine, Dentistry and Morphological Sciences with Transplant Surgery, Oncology and Regenerative Medicine Relevance (CHIMOMO), Unit of Dentistry & Oral-Maxillo-Facial Surgery, University of Modena and Reggio Emilia, Modena, Italy
| | - Ugo Consolo
- Department of Surgery, Medicine, Dentistry and Morphological Sciences with Transplant Surgery, Oncology and Regenerative Medicine Relevance (CHIMOMO), Unit of Dentistry & Oral-Maxillo-Facial Surgery, University of Modena and Reggio Emilia, Modena, Italy
| | - Linda S Birnbaum
- Nicholas School of the Environment, Duke University, Durham, NC, USA
| | - Jacqueline Castenmiller
- Office for Risk Assessment & Research, Netherlands Food and Consumer Product Safety Authority, Utrecht, the Netherlands
| | - Thorhallur I Halldorsson
- Department of Epidemiology Research, Centre for Fetal Programming, Copenhagen, Denmark; Faculty of Food Science and Nutrition, University of Iceland, Reykjavík, Iceland
| | - Tommaso Filippini
- Environmental, Genetic and Nutritional Epidemiology Research Center (CREAGEN), Section of Public Health, Department of Biomedical, Metabolic and Neural Sciences, University of Modena and Reggio Emilia, Modena, Italy; School of Public Health, University of California Berkeley, Berkeley, CA, USA
| | - Marco Vinceti
- Environmental, Genetic and Nutritional Epidemiology Research Center (CREAGEN), Section of Public Health, Department of Biomedical, Metabolic and Neural Sciences, University of Modena and Reggio Emilia, Modena, Italy; Department of Epidemiology, Boston University School of Public Health, Boston, MA, USA.
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12
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Devi B, Guha AK, Devi A. Fluoride ion detection in aqueous medium: Colorimetric and turn-off fluorescent Schiff base chemosensor. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2024; 305:123448. [PMID: 37769467 DOI: 10.1016/j.saa.2023.123448] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/28/2023] [Revised: 08/30/2023] [Accepted: 09/20/2023] [Indexed: 09/30/2023]
Abstract
The work described is focused on a newly developed colorimetric Schiff base fluorescent sensor that exhibits a "turn-off" response when detecting fluoride ions (F-) in an aqueous environment. The confirmation of the recognition event is accomplished through fluorescence titration, absorbance titration, and Density Functional Theory (DFT) calculation study. From the results, it is determined that the detection limit of F- is 2.35 × 10-8 M which is much lower than the World Health Organization (WHO) permissible limit for drinking water while the binding constant was obtained to be 0.1 × 106 M-1 indicating a moderate affinity for the fluoride ions. Furthermore, the binding stoichiometry between the Probe L and F- was found to be 1:1 which is evidenced by the Job's plot and DFT calculation study. Overall, the novel sensor's impressive sensitivity and selectivity make it a promising candidate for the detection of fluoride ions in aqueous media, particularly for monitoring drinking water quality to ensure compliance with WHO guidelines.
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Affiliation(s)
- Bhaswati Devi
- Environmental Chemistry Laboratory, Resource Management and Environmental Section, Life Sciences Division, Institute of Advanced Study in Science and Technology, Guwahati, Assam 781035, India; Department of Chemistry, Gauhati University, Guwahati, Assam 781014, India
| | - Ankur Kanti Guha
- Department of Chemistry, Cotton University, Guwahati, Assam 781001, India
| | - Arundhuti Devi
- Environmental Chemistry Laboratory, Resource Management and Environmental Section, Life Sciences Division, Institute of Advanced Study in Science and Technology, Guwahati, Assam 781035, India
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Wei YL, Lin XC, Liu YY, Lei YQ, Zhuang XD, Zhang HT, Wang XR. Effects of water fluoridation on early embryonic development of zebrafish. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2024; 270:115907. [PMID: 38176185 DOI: 10.1016/j.ecoenv.2023.115907] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/30/2023] [Revised: 12/25/2023] [Accepted: 12/27/2023] [Indexed: 01/06/2024]
Abstract
Fluoride has strong electronegativity and exposes diversely in nature. Water fluoridation is the most pervasive form of occurrence, representing a significant threat to human health. In this study, we investigate the morphometric and physiological alterations triggered by fluoride stimulation during the embryogenesis of zebrafish and reveal its putative effects of stage- and/or dose-dependent. Fluoride exhibits potent biological activity and can be extensively absorbed by the yolk sac, exerting significant effects on the development of multiple organs. This is primarily manifested as restricted nutrient utilization and elevated levels of lipid peroxidation, further leading to the accumulation of superoxide in the yolk sac, liver, and intestines. Moreover, pericardial edema exerts pressure on the brain and eye development, resulting in spinal curvature and reduced body length. Besides, acute fluoride exposure with varying concentrations has led to diverse teratogenic outcomes. A low dose of water fluoridation tends to induce abnormal development of the embryonic yolk sac, while vascular malformation is widely observed in all fluoride-treated groups. The effect of fluoride exposure on blood circulation is universally present, even in zebrafish larvae that do not exhibit obvious deformities. Their swimming behavior is also affected by water fluoridation, resulting in reduced activity and delayed reactions. In conclusion, this study provides valuable insights into the monitoring of environmental quality related to water fluoridation and disease prevention.
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Affiliation(s)
- Ya-Lan Wei
- College of Clinical Medicine for Obstetrics & Gynecology and Pediatrics, Fujian Medical University, Fuzhou, Fujian 350122, China; Medical Research Center, Fujian Maternity and Child Health Hospital, Fuzhou, Fujian 350001, China
| | - Xin-Chen Lin
- College of Clinical Medicine for Obstetrics & Gynecology and Pediatrics, Fujian Medical University, Fuzhou, Fujian 350122, China; Medical Research Center, Fujian Maternity and Child Health Hospital, Fuzhou, Fujian 350001, China
| | - Ying-Ying Liu
- College of Clinical Medicine for Obstetrics & Gynecology and Pediatrics, Fujian Medical University, Fuzhou, Fujian 350122, China
| | - Yu-Qing Lei
- College of Clinical Medicine for Obstetrics & Gynecology and Pediatrics, Fujian Medical University, Fuzhou, Fujian 350122, China; Medical Research Center, Fujian Maternity and Child Health Hospital, Fuzhou, Fujian 350001, China
| | - Xu-Dong Zhuang
- College of Clinical Medicine for Obstetrics & Gynecology and Pediatrics, Fujian Medical University, Fuzhou, Fujian 350122, China; Medical Research Center, Fujian Maternity and Child Health Hospital, Fuzhou, Fujian 350001, China
| | - Hai-Tao Zhang
- College of Clinical Medicine for Obstetrics & Gynecology and Pediatrics, Fujian Medical University, Fuzhou, Fujian 350122, China; Medical Research Center, Fujian Maternity and Child Health Hospital, Fuzhou, Fujian 350001, China
| | - Xin-Rui Wang
- College of Clinical Medicine for Obstetrics & Gynecology and Pediatrics, Fujian Medical University, Fuzhou, Fujian 350122, China; Medical Research Center, Fujian Maternity and Child Health Hospital, Fuzhou, Fujian 350001, China.
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Suleman S, Azhar F, Jabeen R, Ahmad SN, Ahmad KR, Inayat I, Khanum Z, Faisal A, Yasmeen S, Kanwal MA. In ovo exposure of F-ions and organo-fluoride insecticide (Bifenthrin) cause developmental anomalies of eye in chick embryos. Toxicol Rep 2023; 11:283-287. [PMID: 37780127 PMCID: PMC10539789 DOI: 10.1016/j.toxrep.2023.09.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2023] [Revised: 09/18/2023] [Accepted: 09/20/2023] [Indexed: 10/03/2023] Open
Abstract
Objective The developmental abnormalities of the in-ovo exposure of Fluoride ions (F-ions) and Bifenthrin (BF) on the embryonic chick eye were investigated. Materials and methods 165 fresh fertilized eggs of zero day and 40-50 g weight were divided into three groups (55 eggs each) on the basis of inter-vitelline treatment of eggs on zero day of study: 1) Control group (CG); 0.1 ml of 5 % DMSO aqueous solution 2),3) Fluoride group (FG), and Bifenthrin group (BFG); 0.01 mg/kg F-ions (from NaF) and 0.01 mg/kg BF in 0.1 ml of 5 % DMSO aqueous solution respectively. After incubation for 14 days at 37 ± 0.5 °C embryos were externalized. Eyes of each embryo were removed for micro-anatomical, micrometric and histopathological studies. Results The histological sections have shown denser and enlarged marginal mitotic region of the developing eye lenses in FG and BFG. In vertical sections of the eye lenses the nuclei of the crystalline cells in FG and BFG show a highly depressed bow shaped arrangement. Moreover, the nuclei of the core crystalline cells of the lens were apparently smaller in FG and BFG than CG. Out of the six anatomical layers of the retina the nuclear and the plexiform layers were highly enlarged in FG and BFG, similarly the three corneal cell layers (endothelial, parenchymal and epithelial) were enlarged in FG and BFG than CG. The morphometric, histometric and micrometric estimations also show significant variations in FG and BFG than CG. Conclusion The results indicate subtle developmental anomalies of the eyes attributable to the F-ions and BF exposure indicating their developmental neuro-optic disruption potentials. Results further revealed higher toxicity of BF as compared to F-ions.
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Affiliation(s)
- Sadia Suleman
- Department of Zoology, University of Sargodha, Punjab, Pakistan
| | - Fiza Azhar
- Department of Zoology, University of Sargodha, Punjab, Pakistan
| | - Rabia Jabeen
- Department of Zoology, University of Sargodha, Punjab, Pakistan
| | | | | | - Iram Inayat
- Department of Zoology, University of Sargodha, Punjab, Pakistan
| | - Zubedah Khanum
- Department of Zoology, University of Sargodha, Punjab, Pakistan
| | - Ayesha Faisal
- Department of Zoology, University of Sargodha, Punjab, Pakistan
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Zhao Q, Zhou GY, Niu Q, Chen JW, Li P, Tian ZY, Li DJ, Xia T, Zhang S, Wang AG. SIRT1, a target of miR-708-3p, alleviates fluoride-induced neuronal damage via remodeling mitochondrial network dynamics. J Adv Res 2023:S2090-1232(23)00371-5. [PMID: 38036217 DOI: 10.1016/j.jare.2023.11.032] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2023] [Revised: 11/23/2023] [Accepted: 11/26/2023] [Indexed: 12/02/2023] Open
Abstract
INTRODUCTION Neurological dysfunction induced by fluoride contamination is still one of major concern worldwide. Recently, neuroprotective roles of silent information regulator 1 (SIRT1) focusing on mitochondrial function have been highlighted. However, what roles SIRT1 exerts and the underlying regulative mechanisms, remain largely uncharacterized in such neurotoxic process of fluoride. OBJECTIVES We aimed at evaluating the regulatory roles of SIRT1 in human neuroblastoma SH-SY5Y cells and Sprague-Dawley rats with fluoride treatment, and to further identify potential miRNA directly targeting SIRT1. METHODS Pharmacological suppression of SIRT1 by nicotinamide (NIC) and promotion of SIRT1 by adenovirus (Ad-SIRT1) or resveratrol (RSV) were employed to assess the effects of SIRT1 in mitochondrial dysfunction induced by fluoride. Also, miRNAs profiling and bioinformatic prediction were used to screen the miRNAs which can regulate SIRT1 directly. Further, chemical mimic or inhibitor of chosen miRNA was applied to validate the modulation of chosen miRNA. RESULTS NIC exacerbated defects in mitochondrial network dynamics and cytochrome c (Cyto C) release-driven apoptosis, contributing to fluoride-induced neuronal death. In contrast, the ameliorative effects were observed when overexpressing SIRT1 by Ad-SIRT1 in vitro or RSV in vivo. More importantly, miR-708-3p targeting SIRT1 directly was identified. And interestingly, moreover, treatment with chemically modified miR-708-3p mimic aggravated, while miR-708-3p inhibitor suppressed fluoride-caused neuronal death. Further confirmedly, overexpressing SIRT1 effectively neutralized miR-708-3p mimic-worsened fluoride neuronal death via correcting mitochondrial network dynamics. On contrary, inhibiting SIRT1 counteracted the promotive effects of miR-708-3p inhibitor against neurotoxic response by fluoride through aggravating abnormal mitochondrial network dynamics. CONCLUSION These data underscore the functional importance of SIRT1 to mitochondrial network dynamics in neurotoxic process of fluoride and further screen a novel unreported neuronal function of miR-708-3p as an upstream regulator of targeting SIRT1, which has important theoretical implications for a potential therapeutic and preventative target for treatment of neurotoxic progression by fluoride.
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Affiliation(s)
- 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 & 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 Toxicology, School of Public Health, Shanxi Medical University, Taiyuan, Shanxi, People's Republic of China
| | - Guo-Yu 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 & 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 Environmental Health, College of Public Health, Zhengzhou University, Zhengzhou, Henan, 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 & 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
| | - Jing-Wen 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 & 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
| | - 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 & 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
| | - Zhi-Yuan Tian
- 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 & 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
| | - Dong-Jie 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 & 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
| | - Tao Xia
- 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 & 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 & 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
| | - Ai-Guo 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 & 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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Senevirathna L, Ratnayake HE, Jayasinghe N, Gao J, Zhou X, Nanayakkara S. Water fluoridation in Australia: A systematic review. ENVIRONMENTAL RESEARCH 2023; 237:116915. [PMID: 37598841 DOI: 10.1016/j.envres.2023.116915] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/26/2023] [Revised: 08/03/2023] [Accepted: 08/16/2023] [Indexed: 08/22/2023]
Abstract
Water fluoridation is considered a safe and effective public health strategy to improve oral health. This review aimed to systematically summarize the available evidence of water fluoridation in Australia, focusing on the history, health impacts, cost effectiveness, challenges, and limitations. A systematic search was conducted on the Ovid Medline, Web of Science, Scopus, ProQuest Central, Cinahl, and Informit databases to identify literature on water fluoridation in Australia. A grey literature search and backward snowballing were used to capture additional literature. Primary studies, reviews, letters, and opinion papers were included in the quantitative analysis and summarized based on the year of publication and geographical location. The data were extracted from primary studies and summarized under three subheadings: history, community health impacts and the limitations and challenges. Water fluoridation in Australia was first implemented in 1953 in Tasmania. Most states and territories in Australia embraced water fluoridation by 1977 and currently, 89% of the Australian population has access to fluoridated drinking water. Studies report that water fluoridation has reduced dental caries by 26-44% in children, teenagers, and adults, benefiting everyone regardless of age, income, or access to dental care. It has been recognized as a cost-effective intervention to prevent dental caries, especially in rural and low-income areas. Water fluoridation as a public health measure has faced challenges, including political and public opposition, implementation and maintenance costs, access and equity, communication and education, and ethical concerns. Variations in research activities on water fluoridation across Australian states and territories over the last seven decades can be due to several factors, including the time of implementation, funding, and support. Ongoing monitoring and research to review and update optimal fluoride levels in drinking water in Australia is warranted to ensure sustainable benefits on oral health while preventing any adverse impacts.
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Affiliation(s)
- Lalantha Senevirathna
- CSU Engineering, School of Computing, Mathematics and Engineering, Charles Sturt University, Bathurst, Australia; Gulbali Institute for Agriculture, Water and Environment, Charles Sturt University, Albury, Australia
| | | | - Nadeeka Jayasinghe
- CSU Engineering, School of Computing, Mathematics and Engineering, Charles Sturt University, Bathurst, Australia
| | - Jinlong Gao
- School of Dentistry, Faculty of Medicine and Health, The University of Sydney, Sydney, Australia; Institute of Dental Research, Westmead Centre for Oral health, Westmead Hospital, Westmead, Australia
| | - Xiaoyan Zhou
- School of Dentistry, Faculty of Medicine and Health, The University of Sydney, Sydney, Australia; Institute of Dental Research, Westmead Centre for Oral health, Westmead Hospital, Westmead, Australia
| | - Shanika Nanayakkara
- School of Dentistry, Faculty of Medicine and Health, The University of Sydney, Sydney, Australia; Institute of Dental Research, Westmead Centre for Oral health, Westmead Hospital, Westmead, Australia.
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17
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Rahim A, Sibaoueih M, Essamadi A, El Amiri B. An interventional clinical trial investigating the effects of Spirulina platensis on dental fluorosis and antioxidant system in lambs reared in endemic areas. Sci Rep 2023; 13:16858. [PMID: 37803131 PMCID: PMC10558506 DOI: 10.1038/s41598-023-44058-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2023] [Accepted: 10/03/2023] [Indexed: 10/08/2023] Open
Abstract
This study aimed to evaluate the protective effect of Spirulina platensis primary against dental fluorosis and secondary against oxidative stress in lambs reared in endemic fluorosis areas. Forty-eight lambs aged 5 months were divided into four equal groups (each one including 6 males and 6 females). Groups I and II served as controls belonging respectively to fluorosis-free (Settat) and endemic fluorosis (El Fokra) areas, while the other two Groups III and IV (belonging to El Fokra) received respectively a fixed daily intake of 250 and 500 mg/kg bodyweight (BW) of Spirulina platensis. The experiment was carried out for 13 months until the adult incisors appeared for all animals. According to the Dean's Fluorosis Index (DFI), 500 mg/kg BW/day of Spirulina platensis (Group IV) protected against dental fluorosis. Moreover, in both male and female lambs, this dose significantly (p < 0.0001) reduced the plasmatic levels of fluoride, proteins, GSH, and MDA compared to the Group II. Furthermore, enzymatic activities of catalase and SOD increased significantly (p < 0.0001) in male and female lambs of the Group IV as compared to Group II. In conclusion, our findings support the potential use of Spirulina platensis as a valuable solution for addressing fluorosis in sheep, warranting further clinical trials.
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Affiliation(s)
- Abdellatif Rahim
- Animal Production Unit, Regional Center Agricultural Research of Settat, National Institute for Agricultural Research (INRA), Avenue EnnasrRabat Principal, P.O. Box 415, 10090, Rabat, Morocco
- Laboratory of Biochemistry, Neurosciences, Natural Resources and Environment, Faculty of Sciences and Techniques, Hassan First University of Settat, P.O. Box 577, 26000, Settat, Morocco
| | - Mounia Sibaoueih
- Animal Production Unit, Regional Center Agricultural Research of Settat, National Institute for Agricultural Research (INRA), Avenue EnnasrRabat Principal, P.O. Box 415, 10090, Rabat, Morocco
| | - Adekhalid Essamadi
- Laboratory of Biochemistry, Neurosciences, Natural Resources and Environment, Faculty of Sciences and Techniques, Hassan First University of Settat, P.O. Box 577, 26000, Settat, Morocco
| | - Bouchra El Amiri
- Animal Production Unit, Regional Center Agricultural Research of Settat, National Institute for Agricultural Research (INRA), Avenue EnnasrRabat Principal, P.O. Box 415, 10090, Rabat, Morocco.
- African Sustainable Agriculture Research Institute (ASARI), Mohammed VI Polytechnic University (UM6P), 70000, Laayoune, Morocco.
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18
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Wang C, Bian C, Li J, Han L, Guo D, Wang T, Sun Z, Ma C, Liu X, Tian Y, Zheng X. Melatonin promotes Al3+ compartmentalization via H+ transport and ion gradients in Malus hupehensis. PLANT PHYSIOLOGY 2023; 193:821-839. [PMID: 37311207 DOI: 10.1093/plphys/kiad339] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/26/2023] [Revised: 04/26/2023] [Accepted: 05/04/2023] [Indexed: 06/15/2023]
Abstract
Soil acidification in apple (Malus domestica) orchards results in the release of rhizotoxic aluminum ions (Al3+) into soil. Melatonin (MT) participates in plant responses to abiotic stress; however, its role in AlCl3 stress in apple remains unknown. In this study, root application of MT (1 μM) substantially alleviated AlCl3 stress (300 μM) in Pingyi Tiancha (Malus hupehensis), which was reflected by higher fresh and dry weight, increased photosynthetic capacity, and longer and more roots compared with plants that did not receive MT treatment. MT functioned mainly by regulating vacuolar H+/Al3+ exchange and maintaining H+ homeostasis in the cytoplasm under AlCl3 stress. Transcriptome deep sequencing analysis identified the transcription factor gene SENSITIVE TO PROTON RHIZOTOXICITY 1 (MdSTOP1) was induced by both AlCl3 and MT treatments. Overexpressing MdSTOP1 in apple increased AlCl3 tolerance by enhancing vacuolar H+/Al3+ exchange and H+ efflux to the apoplast. We identified 2 transporter genes, ALUMINUM SENSITIVE 3 (MdALS3) and SODIUM HYDROGEN EXCHANGER 2 (MdNHX2), as downstream targets of MdSTOP1. MdSTOP1 interacted with the transcription factor NAM ATAF and CUC 2 (MdNAC2) to induce MdALS3 expression, which reduced Al toxicity by transferring Al3+ from the cytoplasm to the vacuole. Furthermore, MdSTOP1 and MdNAC2 coregulated MdNHX2 expression to increase H+ efflux from the vacuole to the cytoplasm to promote Al3+ compartmentalization and maintain cation balance in the vacuole. Taken together, our findings reveal an MT-STOP1 + NAC2-NHX2/ALS3-vacuolar H+/Al3+ exchange model for the alleviation of AlCl3 stress in apple, laying a foundation for practical applications of MT in agriculture.
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Affiliation(s)
- Caihong Wang
- College of Horticulture, Qingdao Agricultural University, Qingdao 266109, China
- Engineering Laboratory of Genetic Improvement of Horticultural Crops of Shandong Province, Qingdao Agricultural University, Qingdao 266109, China
| | - Chuanjie Bian
- College of Horticulture, Qingdao Agricultural University, Qingdao 266109, China
- Engineering Laboratory of Genetic Improvement of Horticultural Crops of Shandong Province, Qingdao Agricultural University, Qingdao 266109, China
| | - Jianyu Li
- College of Horticulture, Qingdao Agricultural University, Qingdao 266109, China
- Engineering Laboratory of Genetic Improvement of Horticultural Crops of Shandong Province, Qingdao Agricultural University, Qingdao 266109, China
| | - Lei Han
- College of Horticulture, Qingdao Agricultural University, Qingdao 266109, China
- Engineering Laboratory of Genetic Improvement of Horticultural Crops of Shandong Province, Qingdao Agricultural University, Qingdao 266109, China
- Academy of Dongying Efficient Agricultural Technology and Industry on Saline and Alkaline Land in Collaboration with Qingdao Agricultural University, Qingdao Agricultural University, Dongying 257347, China
| | - Dianming Guo
- College of Horticulture, Qingdao Agricultural University, Qingdao 266109, China
- Engineering Laboratory of Genetic Improvement of Horticultural Crops of Shandong Province, Qingdao Agricultural University, Qingdao 266109, China
| | - Tianchao Wang
- College of Horticulture, Qingdao Agricultural University, Qingdao 266109, China
- Engineering Laboratory of Genetic Improvement of Horticultural Crops of Shandong Province, Qingdao Agricultural University, Qingdao 266109, China
| | - Zhijuan Sun
- Laboratory for Agricultural Molecular Biology, College of Life Science, Qingdao Agricultural University, Qingdao 266109, China
| | - Changqing Ma
- College of Horticulture, Qingdao Agricultural University, Qingdao 266109, China
- Engineering Laboratory of Genetic Improvement of Horticultural Crops of Shandong Province, Qingdao Agricultural University, Qingdao 266109, China
| | - Xiaoli Liu
- College of Horticulture, Qingdao Agricultural University, Qingdao 266109, China
- Engineering Laboratory of Genetic Improvement of Horticultural Crops of Shandong Province, Qingdao Agricultural University, Qingdao 266109, China
| | - Yike Tian
- College of Horticulture, Qingdao Agricultural University, Qingdao 266109, China
- Engineering Laboratory of Genetic Improvement of Horticultural Crops of Shandong Province, Qingdao Agricultural University, Qingdao 266109, China
- Academy of Dongying Efficient Agricultural Technology and Industry on Saline and Alkaline Land in Collaboration with Qingdao Agricultural University, Qingdao Agricultural University, Dongying 257347, China
| | - Xiaodong Zheng
- College of Horticulture, Qingdao Agricultural University, Qingdao 266109, China
- Engineering Laboratory of Genetic Improvement of Horticultural Crops of Shandong Province, Qingdao Agricultural University, Qingdao 266109, China
- Academy of Dongying Efficient Agricultural Technology and Industry on Saline and Alkaline Land in Collaboration with Qingdao Agricultural University, Qingdao Agricultural University, Dongying 257347, China
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19
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Irigoyen-Camacho ME, Perez-Perez N, Zepeda-Zepeda MA, Velazquez-Alva MC, Castaño-Seiquer A, Barbero-Navarro I, Sanchez-Perez L. Relationships between dental fluorosis and fluoride concentrations in bottled water and groundwater in low-income children in Mexico. FRONTIERS IN ORAL HEALTH 2023; 4:1187463. [PMID: 37377524 PMCID: PMC10291056 DOI: 10.3389/froh.2023.1187463] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2023] [Accepted: 05/17/2023] [Indexed: 06/29/2023] Open
Abstract
Introduction The aim of the current study was to investigate associations between dental fluorosis in children living in low socioeconomic areas in Mexico, and fluoride concentrations in tap water, fluoride concentrations and in bottled water, and body mass index (BMI). Methods A cross-sectional study involving 585 schoolchildren aged 8-12 years was conducted in communities in a southern state of Mexico with >0.7 parts per million (ppm) fluoride in the groundwater. The Thylstrup and Fejerskov index (TFI) was used to evaluate dental fluorosis, and the World Health Organization growth standards were used to calculate age-adjusted and sex-adjusted BMI Z-scores. A BMI Z-score ≤ -1 SD was used as the cut-off point for thinness, and multiple logistic regression models for dental fluorosis (TFI ≥ 4) were constructed. Results The mean fluoride concentration in tap water was 1.39 ppm (SD 0.66), and the mean fluoride concentration in bottled water was 0.32 ppm (SD 0.23). Eighty-four children (14.39%) had a BMI Z-score ≤ -1 SD. More than half (56.1%) of the children presented with dental fluorosis in TFI categories ≥ 4. Children living in areas with higher fluoride concentrations in the tap water [odds ratio (OR) 1.57, p = 0.002] and bottled water (OR 3.03, p < .001) were more likely to have dental fluorosis in the severe categories (TFI ≥ 4). BMI Z-score was associated with the probability of dental fluorosis (TFI ≥ 4; OR 2.11, p < 0.001), and the effect size was 29.3%. Discussion A low BMI Z-score was associated with a higher prevalence of dental fluorosis in the severe category. Awareness of the fluoride concentrations in bottled water may help prevent dental fluorosis, particularly in children exposed to several high fluoride content sources. Children with a low BMI may be more vulnerable to dental fluorosis.
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Affiliation(s)
| | - Nora Perez-Perez
- School of Dentistry, Regional University of the Southeast, Oaxaca de Juárez, Mexico
| | | | | | | | | | - Leonor Sanchez-Perez
- Health Care Department, Metropolitan Autonomous University-Xochimilco, Mexico City, Mexico
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20
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Hung M, Hon ES, Mohajeri A, Moparthi H, Vu T, Jeon J, Lipsky MS. A National Study Exploring the Association Between Fluoride Levels and Dental Fluorosis. JAMA Netw Open 2023; 6:e2318406. [PMID: 37351888 PMCID: PMC10290240 DOI: 10.1001/jamanetworkopen.2023.18406] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/25/2023] [Accepted: 04/30/2023] [Indexed: 06/24/2023] Open
Abstract
Importance While the effects of fluoride on health have been widely researched, fewer high-quality studies examine the association of fluoride levels in water and dental fluorosis. Objective To investigate the association between fluoride exposure from drinking water and dental fluorosis. Design, Setting, and Participants This cross-sectional study used the 2013-2014 and 2015-2016 National Health and Nutrition Examination Survey (NHANES) data (January 1, 2013, through December 31, 2016). NHANES uses a complex sampling technique to develop nationally representative sample estimates of the US population that consists of interviews and physical assessments. Children and adolescents aged 6 to 15 years were included because NHANES contains their data for all 3 forms of fluoride measures: plasma fluoride levels, water levels of fluoride, and dietary fluoride supplementation. Data were analyzed from January 1 to April 30, 2023. Exposures Water and plasma fluoride levels were measured by laboratory personnel. Dietary fluoride supplement data were self-reported. Main Outcomes and Measures The Dean's Fluorosis Index was used to evaluate fluorosis status for each tooth. The dental fluorosis severity value was based on the second most affected tooth. Independent variables included plasma and water fluoride concentrations and dietary fluoride supplementation. An independent samples t test was used to compare fluoride exposures between groups, and Pearson correlation assessed the association between plasma and water fluoride levels. To assess whether fluoride exposures were associated with dental fluorosis, logistic regression analyses were conducted. Results There were 1543 participants in the 2013-2014 NHANES cycle (weighted proportion male, 51.9%; mean [SD] age, 11.0 [2.7] years) and 1452 in the 2015-2016 cycle (weighted proportion male, 52.6%; mean [SD] age, 11.1 [2.8] years). A weighted 87.3% exhibited some degree of fluorosis in the 2013-2014 cycle and 68.2% in the 2015-2016 cycle. Higher fluoride levels in water and plasma were significantly associated with higher odds of dental fluorosis (adjusted odds ratios, 2.378 [95% CI, 2.372-2.383] in the 2013-2014 cycle and 1.568 [95% CI, 1.564-1.571] in the 2015-2016 cycle). Conclusions and Relevance The findings of this cross-sectional study suggest that exposure to higher concentrations of fluoride in water and having higher plasma levels of fluoride were associated with a greater risk of dental fluorosis. Further research can help policy makers develop policies that balance substantial caries prevention with the risk of dental fluorosis.
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Affiliation(s)
- Man Hung
- College of Dental Medicine, Roseman University of Health Sciences, South Jordan, Utah
- Division of Public Health, University of Utah, Salt Lake City
- College of Social Work, University of Utah, Salt Lake City
- College of Education, University of Utah, Salt Lake City
- George E. Wahlen Department of Veterans Affairs Medical Center, Salt Lake City, Utah
| | - Eric S. Hon
- Department of Economics, University of Chicago, Chicago, Illinois
| | - Amir Mohajeri
- College of Dental Medicine, Roseman University of Health Sciences, South Jordan, Utah
| | - Hyma Moparthi
- College of Dental Medicine, Roseman University of Health Sciences, South Jordan, Utah
| | - Teresa Vu
- College of Dental Medicine, Roseman University of Health Sciences, South Jordan, Utah
| | - Jason Jeon
- College of Dental Medicine, Roseman University of Health Sciences, South Jordan, Utah
| | - Martin S. Lipsky
- College of Dental Medicine, Roseman University of Health Sciences, South Jordan, Utah
- Portland State University Institute on Aging, Portland, Oregon
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21
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Kumar R, Sharma P, Sharma PK, Rose PK, Singh RK, Kumar N, Sahoo PK, Maity JP, Ghosh A, Kumar M, Bhattacharya P, Pandey A. Rice husk biochar - A novel engineered bio-based material for transforming groundwater-mediated fluoride cycling in natural environments. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2023; 343:118222. [PMID: 37235991 DOI: 10.1016/j.jenvman.2023.118222] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/22/2023] [Revised: 04/25/2023] [Accepted: 05/19/2023] [Indexed: 05/28/2023]
Abstract
Biochar, a promising carbon-rich and carbon-negative material, can control water pollution, harness the synergy of sustainable development goals, and achieve circular economy. This study examined the performance feasibility of treating fluoride-contaminated surface and groundwater using raw and modified biochar synthesized from agricultural waste rice husk as problem-fixing renewable carbon-neutral material. Physicochemical characterizations of raw/modified biochars were investigated using FESEM-EDAX, FTIR, XRD, BET, CHSN, VSM, pHpzc, Zeta potential, and particle size analysis were analyzed to identify the surface morphology, functional groups, structural, and electrokinetic behavior. In fluoride (F-) cycling, performance feasibility was tested at various governing factors, contact time (0-120 min), initial F- levels (10-50 mg L-1), biochar dose (0.1-0.5 g L-1), pH (2-9), salt strengths (0-50 mM), temperatures (301-328 K), and various co-occurring ions. Results revealed that activated magnetic biochar (AMB) possessed higher adsorption capacity than raw biochar (RB) and activated biochar (AB) at pH 7. The results indicated that maximum F- removal (98.13%) was achieved using AMB at pH 7 for 10 mg L-1. Electrostatic attraction, ion exchange, pore fillings, and surface complexation govern F- removal mechanisms. Pseudo-second-order and Freundlich were the best fit kinetic and isotherm for F- sorption, respectively. Increased biochar dose drives an increase in active sites due to F- level gradient and mass transfer between biochar-fluoride interactions, which reported maximum mass transfer for AMB than RB and AB. Fluoride adsorption using AMB could be described through chemisorption processes at room temperature (301 K), though endothermic sorption follows the physisorption process. Fluoride removal efficiency reduced, from 67.70% to 53.23%, with increased salt concentrations from 0 to 50 mM NaCl solutions, respectively, due to increased hydrodynamic diameter. Biochar was used to treat natural fluoride-contaminated surface and groundwater in real-world problem-solving measures, showed removal efficiency of 91.20% and 95.61%, respectively, for 10 mg L-1 F- contamination, and has been performed multiple times after systematic adsorption-desorption experiments. Lastly, techno-economic analysis was analyzed for biochar synthesis and F- treatment performance costs. Overall, our results revealed worth output and concluded with recommendations for future research on F- adsorption using biochar.
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Affiliation(s)
- Rakesh Kumar
- School of Ecology and Environment Studies, Nalanda University, Rajgir, Bihar 803116, India.
| | | | - Pushpa Kumari Sharma
- Aryabhatta Centre for Nanoscience & Nanotechnology, Aryabhatta Knowledge University, Patna, Bihar 800001, India
| | - Pawan Kumar Rose
- Department of Energy and Environmental Sciences, Chaudhary Devi Lal University, Sirsa, Haryana 125055, India
| | - Rakesh Kumar Singh
- Aryabhatta Centre for Nanoscience & Nanotechnology, Aryabhatta Knowledge University, Patna, Bihar 800001, India
| | - Nishant Kumar
- Aryabhatta Centre for Nanoscience & Nanotechnology, Aryabhatta Knowledge University, Patna, Bihar 800001, India
| | - Prafulla Kumar Sahoo
- Department of Environmental Sciences and Technology, School of Environment and Earth Sciences, Central University of Punjab, Bathinda, Punjab 151001, India
| | - Jyoti Prakash Maity
- Environmental Science Laboratory, Department of Chemistry, School of Applied Sciences, KIIT Deemed to be University, Bhubaneswar, Odisha 751024, India
| | - Ashok Ghosh
- Mahavir Cancer Sansthan and Research Centre, Phulwarisharif, Patna 801505, Bihar, India; Bihar State Pollution Control Board, Patna, Bihar 800010, India
| | - Manish Kumar
- Sustainability Cluster, School of Engineering, University of Petroleum and Energy Studies, Dehradun, Uttarakhand 248007, India; Escuela de Ingeniería y Ciencias, Tecnologico de Monterrey, Campus Monterrey, Eugenio Garza Sada 2501 Sur, Monterrey 64849, Mexico.
| | - Prosun Bhattacharya
- Department of Sustainable Development, Environmental Sciences and Engineering, KTH Royal Institute of Technology, Teknikringen 10B SE-100 44 Stockholm, Sweden; KWR Water Cycle Research Institute, Groningenhaven 7, 3433 PE, Nieuwegein, the Netherlands
| | - Ashok Pandey
- Sustainability Cluster, School of Engineering, University of Petroleum and Energy Studies, Dehradun, Uttarakhand 248007, India; Centre for Innovation and Translational Research, CSIR-Indian Institute of Toxicology Research, Lucknow 226 001, India
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22
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Sharma P, Verma PK, Sood S, Yousuf R, Kumar A, Raina R, Shabbir MA, Bhat ZF. Protective Effect of Quercetin and Ginger ( Zingiber officinale) Extract against Dimethoate Potentiated Fluoride-Induced Nephrotoxicity in Rats. Foods 2023; 12:foods12091899. [PMID: 37174437 PMCID: PMC10177764 DOI: 10.3390/foods12091899] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2023] [Revised: 05/03/2023] [Accepted: 05/04/2023] [Indexed: 05/15/2023] Open
Abstract
This study aimed to determine the potential of quercetin and Zingiber officinale (ZO) Roscoe extract to alleviate the renal damage induced by dimethoate (DM) and fluoride (F-) alone and by their combined exposure in rats. A total of 54 adult Wistar rats were randomly allocated to nine groups (n = 6). A sub-lethal dose of DM (1/10th of the median lethal dose) was administered by oral gavage alone and along with F- (4.5 ppm, three-fold the permissible limit) in their drinking water continuously for 28 days. Chromatographical analysis revealed the presence of quercetin, curcumin, and other phytochemicals with strong antioxidant properties in ZO-rhizome extract. Severe changes were observed in the levels of the renal biomarkers and histoarchitecture after co-administration of the toxicants, indicating greater kidney damage. The administration of ZO extract (300 mg/kg) along with either or both toxicants led to a significant restoration of the biochemical markers and renal antioxidant profile and histology.
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Affiliation(s)
- Priyanka Sharma
- Division of Veterinary Pharmacology and Toxicology, Faculty of Veterinary Science and Animal Husbandry, SKUAST-Jammu, Jammu 181102, India
| | - Pawan Kumar Verma
- Division of Veterinary Pharmacology and Toxicology, Faculty of Veterinary Science and Animal Husbandry, SKUAST-Jammu, Jammu 181102, India
| | - Shilpa Sood
- Division of Veterinary Pathology, Faculty of Veterinary Science and Animal Husbandry, SKUAST-Jammu, Jammu 181102, India
| | - Rasia Yousuf
- Division of Veterinary Pharmacology and Toxicology, Faculty of Veterinary Science and Animal Husbandry, SKUAST-Jammu, Jammu 181102, India
| | - Amit Kumar
- Quality Management and Instrumentation Division, Indian Institute of Integrative Medicine (CSIR-Lab), Jammu 180016, India
| | - Rajinder Raina
- Division of Veterinary Pharmacology and Toxicology, Faculty of Veterinary Science and Animal Husbandry, SKUAST-Jammu, Jammu 181102, India
| | - Muhammad Asim Shabbir
- National Institute of Food Science and Technology, University of Agriculture, Faisalabad 38000, Pakistan
| | - Zuhaib F Bhat
- Division of Livestock Products Technology, SKUAST-Jammu, Jammu 181102, India
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23
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Preparation of aluminium-hydroxide-modified diatomite and its fluoride adsorption mechanism. Sci Rep 2023; 13:3871. [PMID: 36890239 PMCID: PMC9995456 DOI: 10.1038/s41598-023-30901-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2022] [Accepted: 03/03/2023] [Indexed: 03/10/2023] Open
Abstract
As the current excessive accumulation of fluoride (F-) in the environment can be hazardous to human health, it is essential to remove fluoride from wastewater. In this study, diatomite (DA) was used as a raw material and modified using aluminum hydroxide (Al-DA) for use in the adsorption of F- from water bodies. SEM, EDS, XRD, FTIR, and Zeta potential characterization analyses were carried out; adsorption tests and kinetic fitting were performed, and the effects of pH, dosing quantity, and presence of interfering ions on the adsorption of F- by the materials were investigated. The results show that the Freundlich model effectively describes the adsorption process of F- on DA, which therefore involves adsorption-complexation interactions; however, the Langmuir model effectively describes the adsorption process of F- on Al-DA, corresponding to unimolecular layer adsorption mainly via ion-exchange interactions, that is, adsorption is dominated by chemisorption. Aluminum hydroxide was shown to be the main species involved in F- adsorption. The efficiency of F- removal by DA and Al-DA was over 91% and 97% for 2 h, and the adsorption kinetics were effectively fit by the quasi-secondary model, suggesting that chemical interactions between the absorbents and F- control the adsorption process. The adsorption of F- was highly dependent on the pH of the system, and the maximum adsorption performance was obtained at pH 6 and 4. The optimal dosage of DA and Al-DA was 4 g/L. Even in the presence of interfering ions, the removal of F- on Al-DA reached 89%, showing good selectivity. XRD and FTIR studies showed that the mechanism of F- adsorption on Al-DA involved ion exchange and the formation of F-Al bonds.
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Joseph A, Parveen N, Ranjan VP, Goel S. Drinking hot beverages from paper cups: Lifetime intake of microplastics. CHEMOSPHERE 2023; 317:137844. [PMID: 36640991 DOI: 10.1016/j.chemosphere.2023.137844] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/29/2022] [Revised: 10/31/2022] [Accepted: 01/10/2023] [Indexed: 06/17/2023]
Abstract
Microplastics (MPs) have been found in many packaged food products such as salt, tea bags, milk, and fish. In a previous study by this group, MPs were found to leach into hot water from the plastic lining of disposable paper cups. No studies were found in the literature quantifying health risks or lifetime intake of MPs. At present, it is not possible to quantify health risks due to MPs because dose-response and toxicity assessments are not available. Therefore, the objective of the current study was to assess the intake of MPs and associated contaminants like fluoride that are released into these hot beverages. MPs in the previous study were quantified in terms of particle counts only and a simple method was adopted in the present study to convert the microplastics count into its respective mass. Chronic daily intake (CDI) and lifetime intake (LTI) of MPs through the ingestion pathway were calculated. CDI and Hazard Quotient (HQ) due to fluoride ingestion were also estimated following USEPA guidelines. Monte Carlo (MC) simulations were used to account for the variability in input variables such as concentration of MPs, body weight, averaging time, exposure duration, exposure frequency and ingestion rate to evaluate the impact on CDI and LTI values. The CDI was used to estimate the LTI of MPs and HQ for fluoride ingestion. MC simulations with 100,000 iterations resulted in an average CDI of 0.03 ± 0.025 mg of microplastic per kg of body weight per day and 7.04 ± 8.8 μg fluoride per kg body weight per day. This study takes us one step closer to estimating the human health risk due to the ingestion of microplastics and other contaminants through food items.
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Affiliation(s)
- Anuja Joseph
- School of Environmental Science and Engineering, Indian Institute of Technology Kharagpur, Kharagpur, 721302, West Bengal, India
| | - Naseeba Parveen
- School of Environmental Science and Engineering, Indian Institute of Technology Kharagpur, Kharagpur, 721302, West Bengal, India
| | - Ved Prakash Ranjan
- Environmental Engineering and Management, Department of Civil Engineering, Indian Institute of Technology Kharagpur, Kharagpur, 721302, West Bengal, India
| | - Sudha Goel
- School of Environmental Science and Engineering, Indian Institute of Technology Kharagpur, Kharagpur, 721302, West Bengal, India; Environmental Engineering and Management, Department of Civil Engineering, Indian Institute of Technology Kharagpur, Kharagpur, 721302, West Bengal, India.
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25
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Li Y, Zhang J, Sun L, Zhao H, Jia X, Zhang Y, Li Y. Fluoride-Induced Sperm Damage and HuR-Mediated Excessive Apoptosis and Autophagy in Spermatocytes. Biol Trace Elem Res 2023; 201:295-305. [PMID: 35226278 DOI: 10.1007/s12011-022-03138-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/01/2021] [Accepted: 01/25/2022] [Indexed: 01/11/2023]
Abstract
It is critical to determine the mechanism underlying fluoride (F)-induced damage of the testes to develop appropriate strategies for monitoring and intervention. In the present study, exposure to 50 mg/L sodium fluoride (NaF) for 90 days damaged the normal structure of the testes and quality of the sperm, particularly the spermatocytes, and triggered overexpression of human antigen R (Elavl1/HuR) according to western blotting and immunofluorescence. Furthermore, 0.5 mM NaF exposure for 24 h exposure increased the proportion of apoptosis and expression of caspase-3 and caspase-9 in mouse spermatocytes (GC-2spd cell line), whereas inhibition of HuR reduced apoptosis and the expression of caspase-3 and caspase-9. Additionally, inhibition of HuR alleviated F-induced autophagy based on observation of the autophagy bodies, detection of autophagy activity, and analysis of the expression of the LC3II/LC3I and p62 proteins. These results reveal that excessive F can lead to overexpression of HuR, resulting in high levels of apoptosis and autophagy in spermatocytes. These findings improve the understanding of the mechanisms underlying F-induced male reproductive toxicity, and HuR may be explored as a treatment target for certain conditions. Excessive fluoride can induce overexpression of HuR in testis and result in excessive apoptosis and autophagy in spermatocytes as well as male reproductive damage, such as a decreased sperm count, decreased sperm motility, and increased deformity rate.
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Affiliation(s)
- Yanyan Li
- Department of Public Health and Preventive Medicine, Changzhi Medical College, Changzhi, Shanxi, 046011, People's Republic of China.
| | - Jianbin Zhang
- Department of Public Health and Preventive Medicine, Changzhi Medical College, Changzhi, Shanxi, 046011, People's Republic of China
| | - Linlin Sun
- Department of Public Health and Preventive Medicine, Changzhi Medical College, Changzhi, Shanxi, 046011, People's Republic of China
| | - Hongyu Zhao
- Department of Public Health and Preventive Medicine, Changzhi Medical College, Changzhi, Shanxi, 046011, People's Republic of China
| | - Xiaohan Jia
- Department of Public Health and Preventive Medicine, Changzhi Medical College, Changzhi, Shanxi, 046011, People's Republic of China
| | - Yingri Zhang
- Department of Public Health and Preventive Medicine, Changzhi Medical College, Changzhi, Shanxi, 046011, People's Republic of China
| | - Yuanbin Li
- Department of Public Health and Preventive Medicine, Changzhi Medical College, Changzhi, Shanxi, 046011, People's Republic of China
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The association between fluoride in water and blood pressure in children and adolescents. Pediatr Res 2022; 92:1767-1772. [PMID: 35190682 DOI: 10.1038/s41390-022-01982-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/22/2021] [Revised: 01/10/2022] [Accepted: 01/16/2022] [Indexed: 12/30/2022]
Abstract
BACKGROUND The objective of this study was to determine the association between water and plasma fluoride and blood pressure (BP) among children and adolescents. METHODS Our study population was individuals of 8-18 years in the 2013-2016 National Health and Nutrition Examination Survey. We performed a multivariable linear and logistic regression analysis to examine the relationship between fluoride and BP. RESULTS In a linear regression analysis for systolic BP (SBP) (mm Hg) adjusting for age, sex, race, and poverty, fluoride in water (mg/L) was significant with a coefficient of -0.44 (p = 0.046) among adolescents (12-18 years). Additional adjustments for race, poverty, serum levels of cotinine, and BMI remained significant. While an inverse relationship was found in children (8-11 years), none were significant. Fluoride in plasma was not significant across all ages. The odds ratio of high BP for an increase in water fluoride also was not significant. CONCLUSIONS Higher concentrations of fluoride in water were associated with low SBP only among adolescents. Fluoride alone cannot be responsible for BP as several biological metabolic processes may influence its physiological effects. Fluoride consumption should be considered in conjunction with these processes. IMPACT The high fluoride in drinking water was statistically significantly associated with low systolic BP in children and adolescents. The odds ratio of high BP for an increase in fluoride in drinking water was not significant. Our study contributes to the existing literature by providing individualized data and results on an individual level.
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Ferreira MKM, Souza-Monteiro D, Bittencourt LO, Matos-Sousa JM, Chemelo VS, Santos VRN, Nunes PBO, Balbinot GDS, Prado AF, Collares FM, Ager FJ, Ortega-Feliu I, Respaldiza MA, Pessanha S, Lima RR. Fluoride exposure duringintrauterine and lactation periods promotes changes in the offspring rats' alveolar bone. CHEMOSPHERE 2022; 307:136053. [PMID: 35977563 DOI: 10.1016/j.chemosphere.2022.136053] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/01/2022] [Revised: 06/27/2022] [Accepted: 08/08/2022] [Indexed: 06/15/2023]
Abstract
The importance of fluoride (F) for oral health is well established in the literature. However, evidence suggests that excessive exposure to this mineral is associated with adverse effects at different life stages and may affect many biological systems, especially mineralized tissues. The purpose of this study was to investigate the effects of F exposure during pregnancy and breastfeeding on the alveolar bone of the offspring since the alveolar bone is one of the supporting components of the dental elements. For this, the progeny rats were divided into three groups: control, 10 mg F/L, and 50 mg F/L for 42 (gestational and lactation periods). Analysis of the quantification of F levels in the alveolar bone by particle-induced gamma emission; Raman spectroscopy to investigate the physicochemical aspects and mineral components; computed microtomography to evaluate the alveolar bone microstructure and analyses were performed to evaluate osteocyte density and collagen quantification using polarized light microscopy. The results showed an increase in F levels in the alveolar bone, promoted changes in the chemical components in the bone of the 50 mg F/L animals (p < 0.001), and had repercussions on the microstructure of the alveolar bone, evidenced in the 10 mg F/L and 50 mg F/L groups (p < 0.001). Furthermore, F was able to modulate the content of organic bone matrix, mainly collagen; thus, this damage possibly reduced the amount of bone tissue and consequently increased the root exposure area of the exposed groups in comparison to a control group (p < 0.001). Our findings reveal that Fcan modulate the physicochemical and microstructural dimensions and reduction of alveolar bone height, increasing the exposed root region of the offspring during the prenatal and postnatal period. These findings suggest that F can modulate alveolar bone mechanical strength and force dissipation functionality.
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Affiliation(s)
- Maria Karolina Martins Ferreira
- Laboratory of Functional and Structural Biology, Institute of Biological Sciences, Federal University of Pará, Belém, Brazil
| | - Deiweson Souza-Monteiro
- Laboratory of Functional and Structural Biology, Institute of Biological Sciences, Federal University of Pará, Belém, Brazil
| | - Leonardo Oliveira Bittencourt
- Laboratory of Functional and Structural Biology, Institute of Biological Sciences, Federal University of Pará, Belém, Brazil
| | - José Mário Matos-Sousa
- Laboratory of Functional and Structural Biology, Institute of Biological Sciences, Federal University of Pará, Belém, Brazil
| | - Victória Santos Chemelo
- Laboratory of Functional and Structural Biology, Institute of Biological Sciences, Federal University of Pará, Belém, Brazil
| | - Vinicius Ruan Neves Santos
- Laboratory of Functional and Structural Biology, Institute of Biological Sciences, Federal University of Pará, Belém, Brazil
| | - Paula Beatriz Oliveira Nunes
- Laboratory of Functional and Structural Biology, Institute of Biological Sciences, Federal University of Pará, Belém, Brazil
| | - Gabriela de Souza Balbinot
- Department of Dental Materials, School of Dentistry, Federal University of Rio Grande do Sul, Porto Alegre, Brazil
| | - Alejandro Ferraz Prado
- Cardiovascular System Pharmacology and Toxicology Laboratory, Institute of Biological Sciences, Federal University of Pará, Belem, Brazil
| | - Fabricio Mezzomo Collares
- Department of Dental Materials, School of Dentistry, Federal University of Rio Grande do Sul, Porto Alegre, Brazil
| | - Francisco José Ager
- National Accelerator Center (CNA), Cartuja Science and Technology Park, Calle Thomas Alva Edison 7 Sevilla, 41092, Sevilla, Spain
| | - Inés Ortega-Feliu
- National Accelerator Center (CNA), Cartuja Science and Technology Park, Calle Thomas Alva Edison 7 Sevilla, 41092, Sevilla, Spain
| | - Miguel Angel Respaldiza
- National Accelerator Center (CNA), Cartuja Science and Technology Park, Calle Thomas Alva Edison 7 Sevilla, 41092, Sevilla, Spain
| | - Sofia Pessanha
- Laboratory of Instrumentation, Biomedical Engineering and Radiation Physics, NOVA School of Sciences and Technology, Campus Caparica, 2829-516, Caparica, Portugal
| | - Rafael Rodrigues Lima
- Laboratory of Functional and Structural Biology, Institute of Biological Sciences, Federal University of Pará, Belém, Brazil.
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28
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A zwitterion metal-organic framework for the removal of fluoride from an aqueous solution. J CHEM SCI 2022. [DOI: 10.1007/s12039-022-02069-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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29
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Berger MM, Shenkin A, Schweinlin A, Amrein K, Augsburger M, Biesalski HK, Bischoff SC, Casaer MP, Gundogan K, Lepp HL, de Man AME, Muscogiuri G, Pietka M, Pironi L, Rezzi S, Cuerda C. ESPEN micronutrient guideline. Clin Nutr 2022; 41:1357-1424. [PMID: 35365361 DOI: 10.1016/j.clnu.2022.02.015] [Citation(s) in RCA: 186] [Impact Index Per Article: 93.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2022] [Accepted: 02/16/2022] [Indexed: 11/19/2022]
Abstract
BACKGROUND Trace elements and vitamins, named together micronutrients (MNs), are essential for human metabolism. Recent research has shown the importance of MNs in common pathologies, with significant deficiencies impacting the outcome. OBJECTIVE This guideline aims to provide information for daily clinical nutrition practice regarding assessment of MN status, monitoring, and prescription. It proposes a consensus terminology, since many words are used imprecisely, resulting in confusion. This is particularly true for the words "deficiency", "repletion", "complement", and "supplement". METHODS The expert group attempted to apply the 2015 standard operating procedures (SOP) for ESPEN which focuses on disease. However, this approach could not be applied due to the multiple diseases requiring clinical nutrition resulting in one text for each MN, rather than for diseases. An extensive search of the literature was conducted in the databases Medline, PubMed, Cochrane, Google Scholar, and CINAHL. The search focused on physiological data, historical evidence (published before PubMed release in 1996), and observational and/or randomized trials. For each MN, the main functions, optimal analytical methods, impact of inflammation, potential toxicity, and provision during enteral or parenteral nutrition were addressed. The SOP wording was applied for strength of recommendations. RESULTS There was a limited number of interventional trials, preventing meta-analysis and leading to a low level of evidence. The recommendations underwent a consensus process, which resulted in a percentage of agreement (%): strong consensus required of >90% of votes. Altogether the guideline proposes sets of recommendations for 26 MNs, resulting in 170 single recommendations. Critical MNs were identified with deficiencies being present in numerous acute and chronic diseases. Monitoring and management strategies are proposed. CONCLUSION This guideline should enable addressing suboptimal and deficient status of a bundle of MNs in at-risk diseases. In particular, it offers practical advice on MN provision and monitoring during nutritional support.
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Affiliation(s)
- Mette M Berger
- Department of Adult Intensive Care, Lausanne University Hospital (CHUV), Lausanne, Switzerland.
| | - Alan Shenkin
- Institute of Aging and Chronic Disease, University of Liverpool, Liverpool, UK.
| | - Anna Schweinlin
- Institute of Nutritional Medicine, University of Hohenheim, Stuttgart, Germany.
| | - Karin Amrein
- Medical University of Graz, Department of Internal Medicine, Division of Endocrinology and Diabetology, Austria.
| | - Marc Augsburger
- University Centre of Legal Medicine Lausanne-Geneva, Lausanne University Hospital and University of Lausanne, Geneva University Hospital and University of Geneva, Lausanne-Geneva, Switzerland.
| | | | - Stephan C Bischoff
- Institute of Nutritional Medicine, University of Hohenheim, Stuttgart, Germany.
| | - Michael P Casaer
- KU Leuven, Department of Cellular and Molecular Medicine, Laboratory of Intensive Care Medicine, Leuven, Belgium.
| | - Kursat Gundogan
- Division of Intensive Care Medicine, Department of Internal Medicine, Erciyes University School of Medicine, Kayseri, Turkey.
| | | | - Angélique M E de Man
- Department of Intensive Care Medicine, Research VUmc Intensive Care (REVIVE), Amsterdam Cardiovascular Science (ACS), Amsterdam Infection and Immunity Institute (AI&II), Amsterdam Medical Data Science (AMDS), Amsterdam UMC, Location VUmc, Vrije Universiteit Amsterdam, De Boelelaan 1117, 1081 HV, Amsterdam, the Netherlands.
| | - Giovanna Muscogiuri
- Dipartimento di Medicina Clinica e Chirurgia, Sezione di Endocrinologia, Università di Napoli (Federico II), Naples, Italy; United Nations Educational, Scientific and Cultural Organization (UNESCO) Chair for Health Education and Sustainable Development, Federico II, University, Naples, Italy.
| | - Magdalena Pietka
- Pharmacy Department, Stanley Dudrick's Memorial Hospital, Skawina, Poland.
| | - Loris Pironi
- Alma Mater Studiorum - University of Bologna, Department of Medical and Surgical Sciences, Italy; IRCCS Azienda Ospedaliero-Universitaria di Bologna, Centre for Chronic Intestinal Failure - Clinical Nutrition and Metabolism Unit, Italy.
| | - Serge Rezzi
- Swiss Nutrition and Health Foundation (SNHf), Epalinges, Switzerland.
| | - Cristina Cuerda
- Departamento de Medicina, Universidad Complutense de Madrid, Nutrition Unit, Hospital General Universitario Gregorio Marañón, Madrid, Spain.
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State-of-the-Art Review on the Application of Membrane Bioreactors for Molecular Micro-Contaminant Removal from Aquatic Environment. MEMBRANES 2022; 12:membranes12040429. [PMID: 35448399 PMCID: PMC9032214 DOI: 10.3390/membranes12040429] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/20/2022] [Revised: 03/29/2022] [Accepted: 04/08/2022] [Indexed: 12/27/2022]
Abstract
In recent years, the emergence of disparate micro-contaminants in aquatic environments such as water/wastewater sources has eventuated in serious concerns about humans’ health all over the world. Membrane bioreactor (MBR) is considered a noteworthy membrane-based technology, and has been recently of great interest for the removal micro-contaminants. The prominent objective of this review paper is to provide a state-of-the-art review on the potential utilization of MBRs in the field of wastewater treatment and micro-contaminant removal from aquatic/non-aquatic environments. Moreover, the operational advantages of MBRs compared to other traditional technologies in removing disparate sorts of micro-contaminants are discussed to study the ways to increase the sustainability of a clean water supplement. Additionally, common types of micro-contaminants in water/wastewater sources are introduced and their potential detriments on humans’ well-being are presented to inform expert readers about the necessity of micro-contaminant removal. Eventually, operational challenges towards the industrial application of MBRs are presented and the authors discuss feasible future perspectives and suitable solutions to overcome these challenges.
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Ballantyne JA, Coyle G, Sarwar S, Kühn T. Fluoride Status and Cardiometabolic Health: Findings from a Representative Survey among Children and Adolescents. Nutrients 2022; 14:nu14071459. [PMID: 35406071 PMCID: PMC9003371 DOI: 10.3390/nu14071459] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2022] [Revised: 03/20/2022] [Accepted: 03/22/2022] [Indexed: 02/06/2023] Open
Abstract
There is preliminary evidence to suggest a positive association between fluoride exposure and higher blood pressure among children, but population-based biomarker studies are lacking. Thus, data from the 2013/2014 and 2015/2016 cycles of the US-based National Health and Nutrition Examination Survey (NHANES) were analysed to evaluate the association between plasma fluoride concentrations and blood pressure among children and adolescents aged 8 to 19 years. Secondary analyses were carried out on fluoride status in relation to further markers of cardio-metabolic health, i.e., anthropometric indices, biomarkers of lipid and sugar metabolism, and C-reactive protein levels. There was a positive correlation between water fluoride content and plasma fluoride concentrations (Spearman’s r = 0.41, p < 0.01). However, multivariable linear regression models did not show significant differences in adjusted mean values of systolic and diastolic blood pressure across increasing quartiles of fluoride concentrations. Further markers of cardio-metabolic health were not associated with fluoride status, with the exception of a weak inverse association between plasma fluoride and HbA1c levels. Higher plasma fluoride may not be a risk factor for increased blood pressure or impaired cardio-metabolic health among children in the USA, a non-fluoride endemic country, with wide-spread water fluoridation.
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Affiliation(s)
- Jessica A. Ballantyne
- Institute for Global Food Security (IGFS), School of Biological Sciences, Queen’s University Belfast, Belfast BT9 5DL, UK; (J.A.B.); (G.C.)
| | - Gemma Coyle
- Institute for Global Food Security (IGFS), School of Biological Sciences, Queen’s University Belfast, Belfast BT9 5DL, UK; (J.A.B.); (G.C.)
| | - Sneha Sarwar
- Institute of Nutrition and Food Sciences, University of Dhaka, Dhaka 1000, Bangladesh;
| | - Tilman Kühn
- Institute for Global Food Security (IGFS), School of Biological Sciences, Queen’s University Belfast, Belfast BT9 5DL, UK; (J.A.B.); (G.C.)
- Heidelberg Institute of Global Health (HIGH), University of Heidelberg, 69120 Heidelberg, Germany
- Correspondence: ; Tel.: +44-28-9097-1387
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Li R, Gong Z, Yu Y, Niu R, Bian S, Sun Z. Alleviative Effects of Exercise on Bone Remodeling in Fluorosis Mice. Biol Trace Elem Res 2022; 200:1248-1261. [PMID: 33939130 DOI: 10.1007/s12011-021-02741-y] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/16/2021] [Accepted: 04/26/2021] [Indexed: 12/15/2022]
Abstract
Fluorine is widely present in nature in the form of fluoride. Prolonged high-dose fluoride exposure can cause skeletal fluorosis, resulting in osteosclerosis, osteoporosis or osteomalacia. It has been proved that exercise is one of the important factors affecting the health of the bone and promoting bone formation. To investigate the effects of exercise on bone remodeling in fluorosis mice, 120 male 3-week-old ICR mice were randomly divided into four groups: control group (C), exercise group (E), fluoride group (F), fluoride plus exercise group (F + E). After 8-week physical exercise and/or fluoride exposure, we evaluated the content of fluorine, the histopathological structure and microstructure of femur, bone metabolism biochemical indexes and oxidative stress related parameters, and the mRNA and protein levels of genes in BMP-2/Smads and OPG/RANKL/RANK signaling pathways. Our results showed that 100 mg/L NaF exposure increased the accumulation of fluoride in bone, altered histology of bone, and enhanced the activities of ALP and TRACP. Meanwhile, excessive fluoride induced oxidative stress in bone tissue by increasing the content of ROS and MDA, and decreasing the activities of antioxidant enzymes. In addition, the results of qRT-PCR suggested that NaF significantly increased the mRNA expression of BMP-2, Smad-5, Col IA1, Col IA2, OPG, RANKL and RANK, as well as the elevated proteins of OPG, RANKL and RANK. However, these fluoride-induced changes were alleviated after moderate exercise. Taken together, these findings indicated that moderate exercise decreased the toxicity of fluoride by reducing the accumulation of fluorine in the body to relieve the bone damage caused by fluorosis.
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Affiliation(s)
- Rui Li
- Shanxi Key Laboratory of Ecological Animal Science and Environmental Veterinary Medicine, College of Veterinary Medicine, Shanxi Agricultural University, 030801, Taigu, Shanxi, China
| | - Zeen Gong
- Shanxi Key Laboratory of Ecological Animal Science and Environmental Veterinary Medicine, College of Veterinary Medicine, Shanxi Agricultural University, 030801, Taigu, Shanxi, China
| | - Yanghuan Yu
- Shanxi Key Laboratory of Ecological Animal Science and Environmental Veterinary Medicine, College of Veterinary Medicine, Shanxi Agricultural University, 030801, Taigu, Shanxi, China
| | - Ruiyan Niu
- Shanxi Key Laboratory of Ecological Animal Science and Environmental Veterinary Medicine, College of Veterinary Medicine, Shanxi Agricultural University, 030801, Taigu, Shanxi, China
| | - Shengtai Bian
- School of Sport Science, Beijing Sport University, Beijing, China
| | - Zilong Sun
- Shanxi Key Laboratory of Ecological Animal Science and Environmental Veterinary Medicine, College of Veterinary Medicine, Shanxi Agricultural University, 030801, Taigu, Shanxi, China.
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Vortex-assisted matrix solid-phase dispersion: An eco-friendly alternative for the determination of halogens in edible seaweed. Talanta 2022; 244:123395. [DOI: 10.1016/j.talanta.2022.123395] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2022] [Revised: 03/15/2022] [Accepted: 03/16/2022] [Indexed: 11/18/2022]
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Aigbe UO, Osibote OA. Fluoride ions sorption using functionalized magnetic metal oxides nanocomposites: a review. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:9640-9684. [PMID: 34997491 DOI: 10.1007/s11356-021-17571-7] [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: 05/27/2021] [Accepted: 11/12/2021] [Indexed: 06/14/2023]
Abstract
Fluoride is an anionic pollutant found superfluous in surface or groundwater as a result of anthropogenic actions from improper disposal of industrial effluents. In drinking water, superfluous fluoride has been revealed to trigger severe health problems in humans. Hence, developing a comprehensive wastewater decontamination process for the effective management and preservation of water contaminated with fluoride is desirable, as clean water demand is anticipated to intensify considerably over the upcoming years. In this regard, there have been increased efforts by researchers to create novel magnetic metal oxide nanocomposites which are functionalized for the remediation of wastewater owing to their biocompatibility, cost-effectiveness, relative ease to recover and reuse, non-noxiousness, and ease to separate from solutions using a magnetic field. This review makes an all-inclusive effort to assess the effects of experimental factors on the sorption of fluoride employing magnetic metal oxide nanosorbents. The removal efficiency of fluoride ions onto magnetic metal oxides nanocomposites were largely influenced by the solution pH and ions co-existing with fluoride. Overall, it was noticed from the reviewed researches that the maximum sorption capacity using various metal oxides for fluoride sorption was in the order of aluminium oxides >cerium oxides > iron oxides > magnesium oxides> titanium oxides, and most sorption of fluoride ions was inhibited by the existence of phosphate trailed by sulphate. The mechanism of fluoride sorption onto various sorbents was due to ion exchange, electrostatic attraction, and complexation mechanism.
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Affiliation(s)
- Uyiosa Osagie Aigbe
- Department of Mathematics and Physics, Faculty of Applied Sciences, Cape Peninsula University of Technology, Cape Town, South Africa.
| | - Otolorin Adelaja Osibote
- Department of Mathematics and Physics, Faculty of Applied Sciences, Cape Peninsula University of Technology, Cape Town, South Africa
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35
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Donnell CC, Johnston MJ, Foley JI. The Six-Year-Old 'Adult'. Prim Dent J 2022; 10:74-82. [PMID: 35088635 DOI: 10.1177/20501684211065326] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Children are not miniature adults, yet when a child celebrates their sixth birthday, little do they know that, with the arrival of their first 'adult' tooth, they are about to gain their first real experience of being a 'grown-up'. The age of six is a key milestone in the mental, physical and emotional wellbeing of children, with most children in the UK having commenced primary school education by their fifth birthday. Six-year-olds are about to enter the most critical period in their dental development, the mixed-dentition phase, where their mouths are in a near continuous state of flux. This pivotal age in their dental development should not be undervalued; the dental decisions we make at this age means childhood lasts a lifetime. Caries is the most prevalent, preventable global disease, and with one in four children suffering from dental caries in the primary dentition by the time they start school, the foundations we lay down at the age of six translate into lifelong benefits for the permanent dentition. In this paper, the aim is to demonstrate that at the age of six we get a second chance to get things right. From caries risk factors and tailoring the five pillars of prevention by educating parents on the developing dentition, to reinforcing the importance of habit-breaking, developmental anomalies of enamel and early orthodontic intervention, this paper describes the importance of the age of six, never before so exclusively expressed in a dental sense.
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Affiliation(s)
- Christopher C Donnell
- Specialty Registrar in Paediatric Dentistry, Charles Clifford Dental Hospital, Sheffield Teaching Hospitals NHS Foundation Trust, Sheffield, UK
| | - Matthew J Johnston
- Dental Core Trainee, Oral and Maxillofacial Surgery, Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle, UK
| | - Jennifer I Foley
- Deputy Director / Honorary Consultant in Paediatric Dentistry Edinburgh Dental Institute; Senior Clinical Lecturer in Paediatric Dentistry, University of Edinburgh, Edinburgh, UK
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Iizuka D, Gon M, Tanaka K, Chujo Y. Development of a fluoride-anion sensor based on aggregation of a dye-modified polyhedral oligomeric silsesquioxane. Chem Commun (Camb) 2022; 58:12184-12187. [DOI: 10.1039/d2cc04801a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We report a new concept for a turn-on fluoride sensor based on the aggregation and release of a dye-modified polyhedral oligomeric silsesquioxane.
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Affiliation(s)
- Daisuke Iizuka
- Department of Polymer Chemistry, Graduate School of Engineering, Kyoto University Katsura, Nishikyo-ku, Kyoto 615-8510, Japan
| | - Masayuki Gon
- Department of Polymer Chemistry, Graduate School of Engineering, Kyoto University Katsura, Nishikyo-ku, Kyoto 615-8510, Japan
| | - Kazuo Tanaka
- Department of Polymer Chemistry, Graduate School of Engineering, Kyoto University Katsura, Nishikyo-ku, Kyoto 615-8510, Japan
| | - Yoshiki Chujo
- Department of Polymer Chemistry, Graduate School of Engineering, Kyoto University Katsura, Nishikyo-ku, Kyoto 615-8510, Japan
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Ghosh S, Malloum A, Igwegbe CA, Ighalo JO, Ahmadi S, Dehghani MH, Othmani A, Gökkuş Ö, Mubarak NM. New generation adsorbents for the removal of fluoride from water and wastewater: A review. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2021.118257] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
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38
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Essentiality of Trace Elements in Pregnancy, Fertility, and Gynecologic Cancers-A State-of-the-Art Review. Nutrients 2021; 14:nu14010185. [PMID: 35011060 PMCID: PMC8746721 DOI: 10.3390/nu14010185] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2021] [Revised: 12/23/2021] [Accepted: 12/28/2021] [Indexed: 12/18/2022] Open
Abstract
Gynecological neoplasms pose a serious threat to women's health. It is estimated that in 2020, there were nearly 1.3 million new cases worldwide, from which almost 50% ended in death. The most commonly diagnosed are cervical and endometrial cancers; when it comes to infertility, it affects ~48.5 million couples worldwide and the number is continually rising. Ageing of the population, environmental factors such as dietary habits, environmental pollutants and increasing prevalence of risk factors may affect the reproductive potential in women. Therefore, in order to identify potential risk factors for these issues, attention has been drawn to trace elements. Trace mineral imbalances can be caused by a variety of causes, starting with hereditary diseases, finishing with an incorrect diet or exposure to polluted air or water. In this review, we aimed to summarize the current knowledge regarding trace elements imbalances in the case of gynecologic cancers as well as female fertility and during pregnancy.
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Kalsido AW, Kumar A, Tekola B, Mogessie B, Alemayehu E. Evaluation of bentonite clay in modified and unmodified forms to remove fluoride from water. WATER SCIENCE AND TECHNOLOGY : A JOURNAL OF THE INTERNATIONAL ASSOCIATION ON WATER POLLUTION RESEARCH 2021; 84:2661-2674. [PMID: 34850684 DOI: 10.2166/wst.2021.220] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
The feasibility of fluoride adsorption from aqueous solutions using naturally available bentonite clay in both modified and unmodified forms is investigated in this report. Scanning electron microscopy (SEM), energy dispersive X-ray (EDX), X-ray diffraction (XRD), Fourier-transform infrared spectroscopy analysis was applied to describe the structure and nature of modified and unmodified bentonite clay. The physicochemical characteristics of the adsorbent were also investigated for moisture content, pH, apparent density, specific surface area, cation exchange capacity and its point-of-zero charge. SEM images reveal particles are dispersed homogeneously and are irregular in shape. XRD and EDX analyses reveal that the bentonite is composed of seven materials: calcite, silica, alumina, hematite, bornite and green cinnabar, and chloride which are considered as impurities. Raw bentonite clays have shown very low fluoride removal efficiency (47.19%). Modification of the clay surface with HCl and aluminum oxide, on the other hand, increased fluoride removal efficiency to 79.77% and 94.38%, respectively. At 5 mg/L initial fluoride concentration, 10 cm bed depth packed dose of adsorbent, and 180 min breakthrough time, a 2.88 mg/g of fluoride removal capacity was observed. As a result, aluminum oxide modified bentonite clay was chosen for further investigation and the results are not presented here.
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Affiliation(s)
- Adane Woldemedhin Kalsido
- African Centre of Excellence for Water Management, Addis Ababa University, P.O. Box 1176, Addis Ababa, Ethiopia E-mail:
| | - Arun Kumar
- Environmental Engineering, Department of Civil Engineering, Indian Institute of Technology, New Delhi, India
| | - Beteley Tekola
- African Centre of Excellence for Water Management, Addis Ababa University, P.O. Box 1176, Addis Ababa, Ethiopia E-mail: ; School of Chemical and Bio Engineering, Addis Ababa University, P.O. Box 1176, Addis Ababa, Ethiopia
| | - Beshah Mogessie
- Water Development Commission, Ministry of Water, Irrigation, and Energy, Addis Ababa, Ethiopia
| | - Esayas Alemayehu
- African Centre of Excellence for Water Management, Addis Ababa University, P.O. Box 1176, Addis Ababa, Ethiopia E-mail: ; Faculty of Civil & Environmental Engineering, Jimma Institute of Technology, Jimma University, P.O. Box 378, Jimma, Ethiopia
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Liu N, Li X, Wang M, Zhang F, Wang C, Zhang K, Wang H, Xu S, Hu W, Gu L. DexA70, the Truncated Form of a Self-Produced Dextranase, Effectively Disrupts Streptococcus mutans Biofilm. Front Microbiol 2021; 12:737458. [PMID: 34650538 PMCID: PMC8505985 DOI: 10.3389/fmicb.2021.737458] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2021] [Accepted: 08/30/2021] [Indexed: 11/30/2022] Open
Abstract
Billions of people suffer from dental caries every year in spite of the effort to reduce the prevalence over the past few decades. Streptococcus mutans is the leading member of a specific group of cariogenic bacteria that cause dental caries. S. mutans forms biofilm, which is highly resistant to harsh environment, host immunity, and antimicrobial treatments. In this study, we found that S. mutans biofilm is highly resistant to both antimicrobial agents and lysozyme. DexA70, the truncated form of DexA (amino acids 100–732), a dextranase in S. mutans, prevents S. mutans biofilm formation and disassembles existing biofilms within minutes at nanomolar concentrations when supplied exogenously. DexA70 treatment markedly enhances biofilm sensitivity to antimicrobial agents and lysozyme, indicating its great potential in combating biofilm-related dental caries.
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Affiliation(s)
- Nan Liu
- State Key Laboratory of Microbial Technology, Shandong University, Qingdao, China
| | - Xin Li
- State Key Laboratory of Microbial Technology, Shandong University, Qingdao, China
| | - Maofeng Wang
- State Key Laboratory of Microbial Technology, Shandong University, Qingdao, China
| | - Fengyu Zhang
- State Key Laboratory of Microbial Technology, Shandong University, Qingdao, China
| | - Chuandong Wang
- State Key Laboratory of Microbial Technology, Shandong University, Qingdao, China
| | - Kundi Zhang
- State Key Laboratory of Microbial Technology, Shandong University, Qingdao, China
| | - Hongwei Wang
- State Key Laboratory of Microbial Technology, Shandong University, Qingdao, China
| | - Sujuan Xu
- State Key Laboratory of Microbial Technology, Shandong University, Qingdao, China
| | - Wei Hu
- State Key Laboratory of Microbial Technology, Shandong University, Qingdao, China
| | - Lichuan Gu
- State Key Laboratory of Microbial Technology, Shandong University, Qingdao, China
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Ning H, Li C, Yin Z, Hu D, Ge Y, Chen L. Fluoride exposure decreased neurite formation on cerebral cortical neurons of SD rats in vitro. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:50975-50982. [PMID: 33977427 DOI: 10.1007/s11356-021-13950-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/04/2020] [Accepted: 04/12/2021] [Indexed: 06/12/2023]
Abstract
Fluoride, a geochemical element, can damage the brain and result in dysfunction of the central nervous system. In recent years, fluoride-induced neurotoxicity has become one of research focuses of environmental toxicology. Our previous study showed that fluoride could induce the structural damages of the cerebral cortex and reduce the learning and memory abilities of mice offspring. However, the underlying mechanisms of these effects remain unclear. In this study, primary neurons were isolated from the cerebral cortices of postnatal 1-day SD rats. The primary cultured cerebral cortical neurons were adherent and the cellular network was obvious. Neurons were identified by Nissl's staining and were used for experiments. Different concentrations of sodium fluoride (0.5, 1.0, 1.5, 2.0 and 2.5 mM) were chosen to explore its toxic effects on neuron of SD rats in vitro. Results showed that neuronal morphology was obviously damaged in 2.0 and 2.5 mM, but was not adversely affected in 0.5 and 1 mM. Further studies revealed that the neurites of neuron were shrunken and even became fractured with the increase in NaF dose, which have been detected by scanning electron microscopy (SEM). Meanwhile, TEM showed marginated chromatin, widened nuclear gaps, damaged nuclei and swollen or even absent mitochondria in 1.5, 2 and 2.5 mM group. The cytoskeletal staining was consistent with the above results. The number of neurites of cerebral cortical neuron significantly decreased after fluoride exposure by immunofluorescent assay. In summary, high fluoride (1.5, 2 and 2.5 mM) concentrations exerted a significant toxic effect on the cellular morphologies and neural formation of primary cultured cortical neurons. These findings provide new insights into the roles of NaF in neuronal damage and can contribute to an improved understanding of fluoride-induced neurotoxicity.
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Affiliation(s)
- Hongmei Ning
- College of Animal Science and Veterinary Medicine, Henan Institute of Science and Technology, Xinxiang, China
| | - Chong Li
- College of Animal Science and Veterinary Medicine, Henan Institute of Science and Technology, Xinxiang, China
| | - Zhihong Yin
- College of Animal Science and Veterinary Medicine, Henan Institute of Science and Technology, Xinxiang, China
| | - Dongfang Hu
- College of Animal Science and Veterinary Medicine, Henan Institute of Science and Technology, Xinxiang, China
| | - Yaming Ge
- College of Animal Science and Veterinary Medicine, Henan Institute of Science and Technology, Xinxiang, China.
| | - Lingli Chen
- College of Animal Science and Veterinary Medicine, Henan Institute of Science and Technology, Xinxiang, China.
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Dong H, Yang X, Zhang S, Wang X, Guo C, Zhang X, Ma J, Niu P, Chen T. Associations of low level of fluoride exposure with dental fluorosis among U.S. children and adolescents, NHANES 2015-2016. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2021; 221:112439. [PMID: 34166938 DOI: 10.1016/j.ecoenv.2021.112439] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/07/2021] [Revised: 06/16/2021] [Accepted: 06/17/2021] [Indexed: 06/13/2023]
Abstract
Drinking water fluoridation was a mid-twentieth century innovation based on the medical hypothesis that consuming low doses of fluoride at the teeth forming years provided protection against dental decays. Numerous studies showed that high level exposure to fluoride could cause dental and skeleton fluorosis. However, there was limited study focusing on the fluorosis effect of low levels of exposure to fluoride. Therefore, our study aimed to examine whether the low level of fluoride exposure (measured in blood plasma and household tap water) was associated with the risk of dental fluorosis based on data of the National Health and Nutrition Examination Survey (NHANES) 2015-2016. We analyzed data in 2098 children and adolescents who had Dean's Index scores, and water and plasma fluoride measures. The Dean's Index score was measured by calibrated dental examiners using the modified Dean's fluorosis classification system. Fluoride was measured in plasma and household tap water. In this study, we found that the rate of fluoride concentration in water above the recommended level of 0.7 mg/L was 25%, but the prevalence of dental fluorosis was 70%. Binary logistic regression adjusted for covariates showed that higher water fluoride concentrations (0.31-0.50, 0.51-0.70, > 0.70 compared 0.00-0.30) were associated with higher odds of dental fluorosis (OR = 1.48, 95% CI: 1.13-1.96, p = 0.005; OR = 1.92, 95% CI: 1.44-2.58, p < 0.001, and OR = 2.30, 95% CI: 1.75-3.07, p < 0.001, respectively). The pattern of regression between plasma fluoride and dental fluorosis was similar. Inclusion, our study showed that even low level of water or plasma fluoride exposure was associated with increased the risk of dental fluorosis. The safety of public health approach of drinking water fluoridation for global dental caries reduction are urgently needed further research.
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Affiliation(s)
- Haitao Dong
- Department of Stomatology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100730, China
| | - Xin Yang
- School of Public Health and Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing 100069, China
| | - Shixuan Zhang
- School of Public Health and Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing 100069, China
| | - Xueting Wang
- School of Public Health and Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing 100069, China
| | - Chunlan Guo
- Department of Stomatology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100730, China
| | - Xinyuan Zhang
- Department of Stomatology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100730, China
| | - Junxiang Ma
- School of Public Health and Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing 100069, China
| | - Piye Niu
- School of Public Health and Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing 100069, China.
| | - Tian Chen
- School of Public Health and Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing 100069, China.
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Islam MS, Mostafa MG. Meta-analysis and risk assessment of fluoride contamination in groundwater. WATER ENVIRONMENT RESEARCH : A RESEARCH PUBLICATION OF THE WATER ENVIRONMENT FEDERATION 2021; 93:1194-1216. [PMID: 33420754 DOI: 10.1002/wer.1508] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/05/2020] [Revised: 12/25/2020] [Accepted: 12/28/2020] [Indexed: 06/12/2023]
Abstract
This study aimed to carry out a systematic review of meta-analysis and risk assessment of the global pooled concentration of fluoride and identify the influencing factors of fluoride loads in groundwater. The study extracted data from 36 most prevalent regions of 20 countries in the world through various search engines using keywords as well as Boolean operators and follows the PRISMA statement in every phase of literature searching. The study illustrated the pooled concentration of fluoride in the selected 20 countries was 2.1267 mg/L (1.650, 2.604) at 95% confidence interval, which was higher than the WHO standards limit of 1.5 mg/L. The results of the meta-analysis suggested that pH, Na, HCO3 and rainfall was significantly positively correlated (r = ~0.4; p ˂ 0.05) to fluoride and has a weak correction with the other parameters such as local temperature, altitude, water depth, EC, Ca, and Mg (r = -0.064 to +0.214; p ˂ 0.05). Concerning, the risk assessment through oral and dermal route exposure revealed that the consumers in most of the regions were at considerable risk, and the children were more vulnerable than the adults (THQ > 1). The study findings would help to take measures for safe water supply in the affected areas. PRACTITIONER POINTS: The calculated pooled concentration of fluoride was 2.1267 mg/L (1.650, 2.604) at 95% CI in groundwater of the study areas. Climatic conditions and lithological composition are the key controlling factors for groundwater fluoride contamination. Semi-arid and arid regions are significantly affected by fluoride rather than humid areas. Regarding fluorosis in selected regions, children (78%) are more vulnerable than adults (23%).
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Affiliation(s)
- Md Shajedul Islam
- Institute of Environmental Science, University of Rajshahi, Rajshahi, Bangladesh
| | - M G Mostafa
- Institute of Environmental Science, University of Rajshahi, Rajshahi, Bangladesh
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Galezzo MA, Rodríguez Susa M. The challenges of monitoring and controlling drinking-water quality in dispersed rural areas: a case study based on two settlements in the Colombian Caribbean. ENVIRONMENTAL MONITORING AND ASSESSMENT 2021; 193:373. [PMID: 34061239 DOI: 10.1007/s10661-021-09138-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/17/2020] [Accepted: 05/17/2021] [Indexed: 06/12/2023]
Abstract
Water quality surveillance systems are hardly applied in rural contexts. To provide a comprehensive analysis of drinking-water quality in two rural settlements in the Colombian Caribbean drinking-water samples were collected and analyzed from storage containers in 42 homes. The results of physical, chemical, and microbiological analyses of the water samples were compared with values established by the World Health Organization (WHO) Guidelines for Drinking-water Quality, and Colombian regulations. The Kruskal-Wallis test was applied to compare each parameter for supply source, season (rainy or dry), settlement, and types of storage. Drinking-water Quality Risk Index (IRCA) was calculated for each of the samples. The water supply sources were varied: well (33.3%), rainwater (23.8%), artificial pond (23.8%), and river (19.0%). One-hundred percent of the samples contained Escherichia coli and total coliforms. The IRCA varied between 57.3 and 83.9, with a median of 72.9. Eighty-eight percent of the samples exhibited high risk levels (35.1 < IRCA < 80.0) and 12% were unsanitary (80.1 < IRCA < 100.0). Artificial pond water was the source of supply with the worst IRCA (83.79). Drinking water in the El Cascajo and La Delfina settlements does not meet international and national drinking-water standards. A change is required whereby monitoring and quality control policies take into account the reality of rural settings.
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Affiliation(s)
- María-Angélica Galezzo
- Environmental Engineering Research Center, Department of Civil and Environmental Engineering, Universidad de Los Andes, Bogota, Colombia.
| | - Manuel Rodríguez Susa
- Environmental Engineering Research Center, Department of Civil and Environmental Engineering, Universidad de Los Andes, Bogota, Colombia
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Kuzu B, Ekmekci Z, Tan M, Menges N. Excited State Intramolecular Proton Transfer (ESIPT)-Based Sensor for Ion Detection. J Fluoresc 2021; 31:861-872. [PMID: 33772405 DOI: 10.1007/s10895-021-02716-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2020] [Accepted: 03/03/2021] [Indexed: 12/24/2022]
Abstract
C-2 and C-5 substituted imidazole skeleton was synthesized through a one-pot two-step strategy. Synthesized molecule emits the light on ESIPT (excited-state intramolecular proton transfer). This molecule was utilized for its proton donor ability, and we have observed that fluoride and cyanide ions can be detected selectively. Different cations and anions were selected to observe the response of the synthesized molecule. However, there were not any fluorometric and colorimetric response except for fluoride and cyanide ions. Detection limits of fluoride and cyanide ions were found to be 9.22 μM and 11.48 μM, respectively. 1H-NMR spectra for the solution of the sensor and TBAF (tetrabuthylammoniumfluoride) were used for the identification of [L]-[HF2]- species. 3 equiv. TBAF saturated the solution of the sensor in d6-DMSO, and some of the proton resonances shifted to upfield due to the through-bond effect. The disappearance of NH proton with 0.5 equiv. TBAF or TBACN (tetrabuthylammoniumcyanide) showed that there was a proton abstraction by fluoride and cyanide ions, instead of the hydrogen bond. Solid-state application was utilized, and paper test strips were applied. Emission differences emerged when the sensor loaded strips were reacted with TBAF. Time resolved experiments revealed that solution of the sensor and TBAF in DMSO have multiexponential decay, and one of the lifetime was measured as 13.4 ns.
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Affiliation(s)
- Burak Kuzu
- Pharmaceutical Chemistry Section, Van Yuzuncu Yil University, 65080, Van, Turkey
- SAFF Chemical Reagent R&D Laboratory, VAN-TEKNOKENT, Campus, 65080, Van, Turkey
| | - Zeynep Ekmekci
- Department of Biomedical Engineering, Isparta University of Applied Sciences, 32260, Isparta, Turkey
| | - Meltem Tan
- Pharmaceutical Chemistry Section, Van Yuzuncu Yil University, 65080, Van, Turkey
- SAFF Chemical Reagent R&D Laboratory, VAN-TEKNOKENT, Campus, 65080, Van, Turkey
| | - Nurettin Menges
- Pharmaceutical Chemistry Section, Van Yuzuncu Yil University, 65080, Van, Turkey.
- SAFF Chemical Reagent R&D Laboratory, VAN-TEKNOKENT, Campus, 65080, Van, Turkey.
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Sukhareva O, Mariychuk R, Sukharev S, Delegan-Kokaiko S, Kushtan S. Application of microextraction techniques for indirect spectrophotometric determination of fluorides in river waters. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2021; 280:111702. [PMID: 33257179 DOI: 10.1016/j.jenvman.2020.111702] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/20/2020] [Revised: 10/27/2020] [Accepted: 11/09/2020] [Indexed: 06/12/2023]
Abstract
The present study is dedicated to development of improved method for determination of trace amounts of fluorides in natural waters which is based on the interaction of fluorides with ion associate (IA) of Al(III), salicylic aldehyde acylhydrazones (benzhydrazone (SABH) and 4-picolinhydrazone (SAPH)) and polymethine dye Astra Phloxine FF (AP). Comparison of analytical forms [Al(SABH)2]⋅AP and [Al(SAPH)2]⋅AP showed that the analytical system Al(III)-SAPH-AP is more effective, namely, a higher level of preconcentration of the analytical form is ensured by and extraction equilibrium is achieved faster. Based on the study, we propose a new, fast, simple, reliable, sensitive, and accurate method of the indirect UV-Vis-spectrophotometric determination of fluorides grounded on the interaction of fluorides with IA of Al(III), SAPH and AP with the utilization of vortex-assisted liquid-liquid microextraction (VALLME). The method is based on the discoloration of the microextract of IA of Al(III), SAPH and AP (Al-SAPH-AP) in presence of fluoride ions due to the formation of fluoride complexes of aluminum with higher stability. The effect of various factors has been studied. The optimal conditions of the UV-Vis-spectrophotometric determination of fluorides were defined as: pH 7.0-10.0, 1.0⋅10-6 mol⋅L-1 Al(III); 4.0⋅10-5 mol⋅L-1 SAPH; 1.0⋅10-6 mol⋅L-1 AP; λ = 560 nm. VALLME have been carried out in 250 μL of CCl4 at 20:1 vol ratios of aqueous and organic phases, with vortexing at 3000 rpm for 15 s followed by centrifugation at 2000 rpm for 2 min. The determination of fluorides is feasible in the presence of various interferences. The calibration curve shows the linear dependence in the range of 0.3-114 μg⋅L-1 of the fluorides concentration (R2 = 0.993) with the limit of detection of 0.086 μg⋅L-1 and the limit of determination of 0.284 μg⋅L-1. The accuracy of the proposed protocol of fluorides determination was verified towards a reference method on the samples of natural rivers waters (RSD 2.6-3.1%, recovery 98.3-101.4%).
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Affiliation(s)
- Oksana Sukhareva
- Department of Analytical Chemistry, Uzhhorod National University, Pidhirna Street 46, Uzhhorod, UA, 88000, Ukraine.
| | - Ruslan Mariychuk
- Department of Ecology, University of Presov, 17 November Street 1, Presov, SK, 08116, Slovak Republic.
| | - Sergii Sukharev
- Department of Ecology and Environment Protection, Uzhhorod National University, Pidhirna Street 46, Uzhhorod, UA, 88000, Ukraine.
| | - Svitlana Delegan-Kokaiko
- Department of Ecology and Environment Protection, Uzhhorod National University, Pidhirna Street 46, Uzhhorod, UA, 88000, Ukraine.
| | - Stanislav Kushtan
- Department of Ecology and Environment Protection, Uzhhorod National University, Pidhirna Street 46, Uzhhorod, UA, 88000, Ukraine.
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Mirfasihi A, Malek Afzali B, Ebrahimi Zadeh H, Sanjari K, Mir M. Effect of a Combination of Photodynamic Therapy and Chitosan on Streptococcus mutans (An In Vitro Study). J Lasers Med Sci 2021; 11:405-410. [PMID: 33425290 DOI: 10.34172/jlms.2020.64] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Introduction: This study aimed to assess the effect of photodynamic therapy (PDT) and chitosan separately and in combination on Streptococcus mutans. Methods: This in vitro experimental study evaluated 216 microbial samples in 6 groups. First, 5 µL of 0.5 McFarland standard suspension of S. mutans was added to each well of an ELISA microplate; 100 µL of Mueller Hinton broth was also added to each well; 180 wells contained S. mutans suspension while 36 wells were devoid of bacteria. Group 1 served as the negative control and had no bacteria. Group 2 served as the positive control and S. mutans in the positive control wells did not undergo any intervention. In groups 3 and 4, PDT with a 50 mW low-level laser was performed for 30 and 40 seconds respectively. In group 5, 3 mg/mL of chitosan (100 µL) was used. In group 6, 3 mg/mL (100 µL) of chitosan was used in combination with PDT (50 mW laser for 30 seconds). The laser was irradiated under aseptic conditions at a 660 nm wavelength with 50 mW power. Data were analyzed using one-way ANOVA and Tukey's test. Results: PDT combined with chitosan showed maximum bactericidal effect followed by PDT for 40 seconds and chitosan groups (P < 0.05). PDT for 30 seconds showed a minimum bactericidal effect (P < 0.05). All pairwise comparisons revealed significant differences (P < 0.001). Conclusion: Chitosan and PDT alone can be used to decrease the S. mutans count. However, their combined use has a greater bactericidal effect on S. mutans .
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Affiliation(s)
- Armin Mirfasihi
- Assistant Professor, Periodontology Department, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Beheshteh Malek Afzali
- Associate Professor, Department of Pediatric Dentistry, Dental Research Center, Research Institute of Dental Science, Department of Pediatric Dentistry, Dental School, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Hosna Ebrahimi Zadeh
- Dental Research Center, Restorative Department, School of Dentistry, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Khashayar Sanjari
- Department of Pediatric Dentistry, School of Dentistry, Arak University of Medical Sciences, Arak, Iran
| | - Maziar Mir
- Department of Conservative Dentistry, RWTH Aachen Hospital & Deutsche Gesellschaft fur laserzahnheilkunde (DGL), Aachen Klinkum, Pauwelsstr.30, 52074 Aachen, Germany
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Garcia ALH, Picinini J, Silveira MD, Camassola M, Visentim APV, Salvador M, da Silva J. Fluorosilicic acid induces DNA damage and oxidative stress in bone marrow mesenchymal stem cells. MUTATION RESEARCH. GENETIC TOXICOLOGY AND ENVIRONMENTAL MUTAGENESIS 2021; 861-862:503297. [PMID: 33551106 DOI: 10.1016/j.mrgentox.2020.503297] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/22/2020] [Revised: 11/06/2020] [Accepted: 11/11/2020] [Indexed: 06/12/2023]
Abstract
Excess fluoride in water can produce changes in tooth enamel mineralization and lead to diseases such as dental or skeletal fluorosis. The present study aimed to assess the genotoxic effects, oxidative stress, and osteoblastic mineralization induced by fluorosilicic acid (FA) in murine bone marrow-derived mesenchymal stem cells (BM-MSCs). BM-MSCs were isolated from the femurs and tibias of rats and cultured under standard conditions. Cells exposure occurred for 3, 7, 14, and 21 days to different concentrations of FA (0.6-9.6 mg/L). Cytotoxicity was observed in 14 and 21 days of exposure for all concentrations of FA (cell proliferation below 60%), and for 3 and 7 days, in which the proliferation was above 80%. Alkaline comet assay results demonstrated significant increased damage at concentrations of 0.3-2.4 mg/L, and the micronucleus test showed increased rates for micronucleus (1.2-2.4 mg/L) and nuclear buds (NBUDs) (0.3-2.4 mg/L) (P < 0.05/Dunnett's test). An alkaline comet assay modified by repair endonuclease (FPG) was used to detect oxidized nucleobases, which occurred at 0.6 mg/L. The oxidative stress was evaluated by lipid peroxidation (TBARS) and antioxidant activity (TAC). Only lipid peroxidation was increased at concentrations of 0.6 mg/L and 1.2 mg/L (P < 0.001/Tukey's test). The osteogenesis process determined the level of extracellular matrix mineralization. The mean concentration of Alizarin red increased significantly in 14 days at the 0.6 mg/L concentration group (P < 0.05/Tukey's test) compared to the control group, and a significant difference between the groups regarding the activity of alkaline phosphatase (ALP) was observed. Unlike other studies, our results indicated that FA in BM-MSCs at concentrations used in drinking water induced genotoxicity, oxidative stress, and acceleration of bone mineralization.
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Affiliation(s)
- Ana L H Garcia
- Lutheran University of Brazil (ULBRA), Laboratory of Genetic Toxicology, PPGBioSaúde (Postgraduate Program in Cellular and Molecular Biology Applied to Health), 92425-900, Canoas, RS, Brazil.
| | - Juliana Picinini
- Lutheran University of Brazil (ULBRA), Laboratory of Genetic Toxicology, PPGBioSaúde (Postgraduate Program in Cellular and Molecular Biology Applied to Health), 92425-900, Canoas, RS, Brazil
| | - Maiele D Silveira
- Lutheran University of Brazil (ULBRA), Laboratory of Stem Cells and Tissue Engineering PPGBioSaúde (Postgraduate Program in Cellular and Molecular Biology Applied to Health), 92425-900, Canoas, Rio Grande do Sul, Brazil
| | - Melissa Camassola
- Lutheran University of Brazil (ULBRA), Laboratory of Stem Cells and Tissue Engineering PPGBioSaúde (Postgraduate Program in Cellular and Molecular Biology Applied to Health), 92425-900, Canoas, Rio Grande do Sul, Brazil
| | - Ana P V Visentim
- Institute, University of Caxias do Sul, Rua Travessão Solferino 610, Cruzeiro, Caxias do Sul, Rio Grande do Sul, Brazil
| | - Mirian Salvador
- Institute, University of Caxias do Sul, Rua Travessão Solferino 610, Cruzeiro, Caxias do Sul, Rio Grande do Sul, Brazil
| | - Juliana da Silva
- Lutheran University of Brazil (ULBRA), Laboratory of Genetic Toxicology, PPGBioSaúde (Postgraduate Program in Cellular and Molecular Biology Applied to Health), 92425-900, Canoas, RS, Brazil; Laboratory of Genetic Toxicology, La Salle University (UniLaSalle), Canoas, RS, Brazil.
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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. ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY 2021; 81:103511. [PMID: 33035703 DOI: 10.1016/j.etap.2020.103511] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [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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Abstract
Bone is a dynamic tissue with a quarter of the trabecular and a fifth of the cortical bone being replaced continuously each year in a complex process that continues throughout an individual's lifetime. Bone has an important role in homeostasis of minerals with non-stoichiometric hydroxyapatite bone mineral forming the inorganic phase of bone. Due to its crystal structure and chemistry, hydroxyapatite (HA) and related apatites have a remarkable ability to bind molecules. This review article describes the accretion of trace elements in bone mineral giving a historical perspective. Implanted HA particles of synthetic origin have proved to be an efficient recruiting moiety for systemically circulating drugs which can locally biomodulate the material and lead to a therapeutic effect. Bone mineral and apatite however also act as a waste dump for trace elements and drugs, which significantly affects the environment and human health. Cite this article: Bone Joint Res 2020;9(10):709-718.
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Affiliation(s)
| | | | | | - K Elizabeth Tanner
- School of Engineering and Materials Science and Institute of Bioengineering, Queen Mary University of London, London, UK
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