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Deng J, Zeng X, Zhang K, Zhang T, Dong Y, Zou J, Wu C, Li Y, Li F, Guan Z. Knockdown of SMYD3 by RNA Interference Regulates the Expression of Autophagy-Related Proteins and Inhibits Bone Formation in Fluoride-Exposed Osteoblasts. Biol Trace Elem Res 2024:10.1007/s12011-024-04327-w. [PMID: 39106008 DOI: 10.1007/s12011-024-04327-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/08/2024] [Accepted: 07/24/2024] [Indexed: 08/07/2024]
Abstract
This study aimed to explore the role of histone methyltransferase SET and MYND domain containing 3 (SMYD3) in bone metabolism of osteoblasts exposed to fluoride. The levels of urine fluoride, BALP, and OC and the mRNA expression of SMYD3 were determined in patients with skeletal fluorosis and non-fluoride-exposed people on informed consent. The expression of SMYD3 protein, OC contents, and BALP activities were detected in human osteoblast-like MG63 cells and rat primary osteoblasts treated with sodium fluoride (NaF) for 48 h. The autophagosomes were observed by transmission electron microscopy. Then, we knocked down SMYD3 to confirm whether it was involved in the regulation of bone formation and related to autophagy and Wnt/β-catenin pathway. We observed that OC and BALP levels in patients with skeletal fluorosis significantly increased, while the mRNA expression of SMYD3 significantly decreased in the skeletal fluorosis groups. In vitro, the OC contents, BALP activities, and expression of SMYD3 significantly increased, and many autophagosomes were observed in NaF treated osteoblasts. The downregulation of SMYD3 significantly inhibited OC contents, BALP activities, and expression of autophagy-related proteins, but with no significant changes in the Wnt/β-catenin pathway. Our results demonstrated that fluoride exposure with coal-burning pollution caused orthopedic injuries and abnormalities in the levels of OC and BALP and hindered normal bone metabolism. Silencing the SMYD3 gene could significantly reduce OC and BALP levels via inhibiting the increase in autophagy induced by fluoride.
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Affiliation(s)
- Jie Deng
- Key Laboratory of Endemic and Ethnic Diseases of the Ministry of Education, Guiyang, 550004, Guizhou, China
- Provincial Key Laboratory of Medical Molecular Biology, Guizhou Medical University, Guiyang, 550004, Guizhou, China
| | - Xiaoxiao Zeng
- Key Laboratory of Endemic and Ethnic Diseases of the Ministry of Education, Guiyang, 550004, Guizhou, China
- Provincial Key Laboratory of Medical Molecular Biology, Guizhou Medical University, Guiyang, 550004, Guizhou, China
| | - Kailin Zhang
- Key Laboratory of Endemic and Ethnic Diseases of the Ministry of Education, Guiyang, 550004, Guizhou, China
- Department of Biochemistry and Molecular Biology, Guizhou Medical University, Guiyang, 550004, Guizhou, China
| | - Ting Zhang
- Key Laboratory of Endemic and Ethnic Diseases of the Ministry of Education, Guiyang, 550004, Guizhou, China
- Provincial Key Laboratory of Medical Molecular Biology, Guizhou Medical University, Guiyang, 550004, Guizhou, China
| | - Yangting Dong
- Key Laboratory of Endemic and Ethnic Diseases of the Ministry of Education, Guiyang, 550004, Guizhou, China
- Provincial Key Laboratory of Medical Molecular Biology, Guizhou Medical University, Guiyang, 550004, Guizhou, China
| | - Jian Zou
- Key Laboratory of Endemic and Ethnic Diseases of the Ministry of Education, Guiyang, 550004, Guizhou, China
- Provincial Key Laboratory of Medical Molecular Biology, Guizhou Medical University, Guiyang, 550004, Guizhou, China
| | - Changxue Wu
- Key Laboratory of Endemic and Ethnic Diseases of the Ministry of Education, Guiyang, 550004, Guizhou, China
- Provincial Key Laboratory of Medical Molecular Biology, Guizhou Medical University, Guiyang, 550004, Guizhou, China
| | - Yi Li
- Key Laboratory of Endemic and Ethnic Diseases of the Ministry of Education, Guiyang, 550004, Guizhou, China
- Provincial Key Laboratory of Medical Molecular Biology, Guizhou Medical University, Guiyang, 550004, Guizhou, China
| | - Fucheng Li
- Research Group of Liupanshui Center for Disease Control and Prevention, Liupanshui, 553001, Guizhou, China
| | - Zhizhong Guan
- Key Laboratory of Endemic and Ethnic Diseases of the Ministry of Education, Guiyang, 550004, Guizhou, China.
- Departments of Pathology, The Affiliated Hospital of Guizhou Medical University, Guiyang, 550004, Guizhou, China.
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Zhu S, Liu J, Zhao J, Zhou B, Zhang Y, Wang H. HIF-1α-mediated autophagy and canonical Wnt/β-catenin signalling activation are involved in fluoride-induced osteosclerosis in rats. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2022; 315:120396. [PMID: 36220573 DOI: 10.1016/j.envpol.2022.120396] [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: 06/15/2022] [Revised: 09/23/2022] [Accepted: 10/05/2022] [Indexed: 06/16/2023]
Abstract
Fluoride (F) exposure can cause osteosclerosis, which is characterised by a high bone mass, but its mechanism is not fully illustrated. Here, we aimed to evaluate the effects of excessive F exposure on the bone lesion by treating female Sprague-Dawley rats with different concentrations of sodium fluoride (NaF) (0, 55, 110 and 221 mg/L) for 90 days and the corresponding concentrations of fluorine ion (0, 25, 50 and 100 mg/L, respectively). Histopathological results showed that excessive F exposure caused the enlargement of trabeculae and their integration into one large piece, growth plate thickening, articular cartilage impairment and bone collagen abnormality. Meanwhile, F promoted calcium deposition and bone mineralisation, and induced abnormal osteogenesis increased. The results of micro-computed tomography also confirmed that excessive F destroyed the bone microstructure and induced a high-bone-mass phenotype, consistent with the results of pathomorphology. Mechanistically, excessive amounts of F led to angiogenesis inhibition and HIF-1α signalling enhancement. Subsequently, F induced autophagy and canonical Wnt/β-catenin signalling pathway activation. Collectively, these results manifested that F enhanced the hypoxia inducible factor-1α signalling, which in turn triggered autophagy and canonical Wnt/β-catenin signalling activation, ultimately leading to osteosclerosis in the rats.
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Affiliation(s)
- Shiquan Zhu
- Henan Key Laboratory of Environmental and Animal Product Safety, Henan University of Science and Technology, Luoyang, 471000, Henan, People's Republic of China.
| | - Jing Liu
- Henan Key Laboratory of Environmental and Animal Product Safety, Henan University of Science and Technology, Luoyang, 471000, Henan, People's Republic of China.
| | - Jing Zhao
- Henan Key Laboratory of Environmental and Animal Product Safety, Henan University of Science and Technology, Luoyang, 471000, Henan, People's Republic of China.
| | - Bianhua Zhou
- Henan Key Laboratory of Environmental and Animal Product Safety, Henan University of Science and Technology, Luoyang, 471000, Henan, People's Republic of China.
| | - Yuling Zhang
- Henan Key Laboratory of Environmental and Animal Product Safety, Henan University of Science and Technology, Luoyang, 471000, Henan, People's Republic of China.
| | - Hongwei Wang
- Henan Key Laboratory of Environmental and Animal Product Safety, Henan University of Science and Technology, Luoyang, 471000, Henan, People's Republic of China.
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Collins MT, Marcucci G, Anders HJ, Beltrami G, Cauley JA, Ebeling PR, Kumar R, Linglart A, Sangiorgi L, Towler DA, Weston R, Whyte MP, Brandi ML, Clarke B, Thakker RV. Skeletal and extraskeletal disorders of biomineralization. Nat Rev Endocrinol 2022; 18:473-489. [PMID: 35578027 DOI: 10.1038/s41574-022-00682-7] [Citation(s) in RCA: 24] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 04/13/2022] [Indexed: 12/15/2022]
Abstract
The physiological process of biomineralization is complex and deviation from it leads to a variety of diseases. Progress in the past 10 years has enhanced understanding of the genetic, molecular and cellular pathophysiology underlying these disorders; sometimes, this knowledge has both facilitated restoration of health and clarified the very nature of biomineralization as it occurs in humans. In this Review, we consider the principal regulators of mineralization and crystallization, and how dysregulation of these processes can lead to human disease. The knowledge acquired to date and gaps still to be filled are highlighted. The disorders of mineralization discussed comprise a broad spectrum of conditions that encompass bone disorders associated with alterations of mineral quantity and quality, as well as disorders of extraskeletal mineralization (hyperphosphataemic familial tumoural calcinosis). Included are disorders of alkaline phosphatase (hypophosphatasia) and phosphate homeostasis (X-linked hypophosphataemic rickets, fluorosis, rickets and osteomalacia). Furthermore, crystallopathies are covered as well as arterial and renal calcification. This Review discusses the current knowledge of biomineralization derived from basic and clinical research and points to future studies that will lead to new therapeutic approaches for biomineralization disorders.
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Affiliation(s)
- Michael T Collins
- Skeletal Disorders and Mineral Homeostasis Section, National Institute of Dental and Craniofacial Research, NIH, Bethesda, MD, USA.
| | - Gemma Marcucci
- Bone Metabolic Diseases Unit, Department of Biomedical, Experimental and Clinical Sciences, University of Florence, Florence, Italy
| | - Hans-Joachim Anders
- Department of Medicine IV, Hospital of the University of Munich, Ludwig-Maximilians University, Munich, Germany
| | - Giovanni Beltrami
- Department Paediatric Orthopedic Oncology, Careggi and Meyer Children Hospital, Florence, Italy
| | - Jane A Cauley
- Department of Epidemiology, Graduate School of Public Health, University of Pittsburgh, Pittsburgh, PA, USA
| | - Peter R Ebeling
- Department of Medicine, School of Clinical Sciences, Monash University, Melbourne, Australia
| | - Rajiv Kumar
- Departments of Medicine, Biochemistry and Molecular Biology, Mayo Clinic, Rochester, MN, USA
| | - Agnès Linglart
- APHP, Endocrinologie et diabète de l'enfant, Paris, France
| | - Luca Sangiorgi
- Medical Genetics and Skeletal Rare Diseases, IRCCS Istituto Ortopedico Rizzoli, Bologna, Italy
| | - Dwight A Towler
- University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Ria Weston
- Cardiovascular Research Group, Manchester Metropolitan University, Manchester, UK
| | - Michael P Whyte
- Center for Metabolic Bone Disease and Molecular Research, Shriners Hospitals for Children-St Louis, St Louis, MO, USA
- Division of Bone and Mineral Diseases, Department of Internal Medicine, Washington University School of Medicine, St Louis, MO, USA
| | | | - Bart Clarke
- Mayo Clinic Division of Endocrinology, Diabetes, Metabolism, and Nutrition, Rochester, MN, USA
| | - Rajesh V Thakker
- Academic Endocrine Unit, Radcliffe Department of Medicine, University of Oxford, Oxford, UK
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Ayele BA, Godebo TR, Tekle-Haimanot R, Yifru YM. Neuro-medical manifestations of fluorosis in populations living in the Main Ethiopian Rift Valley. ENVIRONMENTAL GEOCHEMISTRY AND HEALTH 2022; 44:1129-1136. [PMID: 34173906 DOI: 10.1007/s10653-021-01016-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/12/2020] [Accepted: 06/16/2021] [Indexed: 06/13/2023]
Abstract
Prolonged exposure to higher concentrations of fluoride (> 1.5 mg/L) is associated with dental and skeletal fluorosis. The effects of fluoride on dental and skeletal system have been studied extensively; however, the neurological consequences of fluoride in population-based studies are limited. The study aims to assess the epidemiology of neurological and other manifestations of fluorosis among rural populations living in the Main Ethiopian Rift valley. In this cross-sectional study, we enrolled 316 individuals from 23 rural communities in the Main Ethiopian Rift valley. Fluoride concentration was measured in drinking water samples collected from 23 community wells. Association between fluoride concentrations and clinical features of fluorosis was assessed using student t test, chi square, multivariable regression using adjusted odds ratio (OR). The mean fluoride concentration in the drinking water was 6.8 ± 4.3 mg/L (range: 0.3-15.5 mg/L). At least one clinical sign of skeletal fluorosis was observed in 54.4% (n = 175) of the study participants. Headache and joint pain reported by 67.1% and 56.3% of the participants as the most common neurological manifestation, and skeletal fluorosis symptom, respectively. The mean fluoride level was higher for those individuals who reported paresthesia compared to those with no-paresthesia. Loss of appetite, constipation, and fatigue were reported by 48.0%, 45.6%, and 56.6% of the participants, respectively. Signs of crippling fluorosis were observed in small proportion (1.6%) of the participants. Individuals who reported headache are most likely exposed to higher fluoride concentrations in drinking water compared to those reported no-headache (p < 0.001). The study demonstrates high prevalence of neuro-medical manifestations of fluorosis in population living in the Main Ethiopian Rift valley. Fluoride concentration in drinking water and joint pain were independent predictors of fluorosis.
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Affiliation(s)
- Biniyam A Ayele
- Department of Neurology, School of Medicine College of Health Sciences, Addis Ababa University, Zambia Street, Po Box 1171, Addis Ababa, Ethiopia.
| | - Tewodros Rango Godebo
- Department of Environmental Health Sciences, School of Public Health and Tropical Medicine, Tulane University, Canal Street Suite 2100, New Orleans, LA, 70112, USA
| | | | - Yared Mamushet Yifru
- Department of Neurology, School of Medicine College of Health Sciences, Addis Ababa University, Zambia Street, Po Box 1171, Addis Ababa, Ethiopia
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5
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Jiang N, Xu W, Zhang Z, Jin H, Yang Y, Zhang J, Xu H. Role of TGF-β1 in Fluoride-Treated Osteoblasts at Different Stages. Biol Trace Elem Res 2022; 200:740-748. [PMID: 34031801 DOI: 10.1007/s12011-021-02686-2] [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: 12/02/2020] [Accepted: 03/21/2021] [Indexed: 10/21/2022]
Abstract
Little attention has been paid to the tolerance of osteoblasts to fluoride in distinct differentiation stages, and the role of TGF-β1 in fluoride-treated osteoblast differentiation of progenitors and precursors was rarely mentioned in previous studies. The present study aimed to clarify how fluoride affected different differentiation stages of osteoblasts, and to elucidate the role of TGF-β1 in this process. We assessed cell migration, proliferation, DNA damage, and apoptosis of early-differentiated osteoblasts derived from bone marrow stem cells (BMSCs) exposed to fluoride with or without TGF-β1. Subsequently, MC3T3-E1 cells cultured with mineral induction medium were treated with fluoride to test fluoride's effect on late-differentiated osteoblasts. The specific fluoride concentrations and treatment times were chosen to evaluate the role of TGF-β1 in fluoride-induced osteoblastic differentiation and function. Results showed early-differentiated osteoblasts treated with a low dose of fluoride grew and moved more rapidly. TGF-β1 promoted cell proliferation and inhibited cell apoptosis in early-differentiated osteoblasts exposed to a low fluoride dose, but enhanced apoptosis at higher fluoride conditions. In the late-differentiated osteoblasts, the fluorine dose range with anabolic effects was narrowed, and the fluoride range with catabolic effects was widened. Treatment with a low fluoride dose stimulated the alkaline phosphatase (ALP) expression. TGF-β1 treatment inhibited Runx2 expression but increased RANKL expression in late-differentiated osteoblasts exposed to fluoride. Meanwhile, TGF-β1 treatments activated Smad3 phosphorylation but blocked Wnt10b expression in osteoblasts. We conclude that TGF-β1 plays an essential role in fluoride-induced differentiation and osteoblast function via activation of Smad3 instead of Wnt10 signaling.
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Affiliation(s)
- Ningning Jiang
- Department of Regenerative Medical Science, School of Pharmaceutical Sciences, Jilin University, Changchun, 130021, People's Republic of China
| | - Wenshu Xu
- Department of Regenerative Medical Science, School of Pharmaceutical Sciences, Jilin University, Changchun, 130021, People's Republic of China
| | - Zhongyuan Zhang
- Department of Regenerative Medical Science, School of Pharmaceutical Sciences, Jilin University, Changchun, 130021, People's Republic of China
| | - Hui Jin
- China-Japan Union Hospital, Jilin University, Changchun, 130033, People's Republic of China
| | - Yang Yang
- Department of Regenerative Medical Science, School of Pharmaceutical Sciences, Jilin University, Changchun, 130021, People's Republic of China
| | - Jingmin Zhang
- Department of Regenerative Medical Science, School of Pharmaceutical Sciences, Jilin University, Changchun, 130021, People's Republic of China
| | - Hui Xu
- Department of Regenerative Medical Science, School of Pharmaceutical Sciences, Jilin University, Changchun, 130021, People's Republic of China
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Mohideen H, Dahiya DS, Parsons D, Hussain H, Ahmed RS. Skeletal Fluorosis: A Case of Inhalant Abuse Leading to a Diagnosis of Colon Cancer. J Investig Med High Impact Case Rep 2022; 10:23247096221084919. [PMID: 35343855 PMCID: PMC8966097 DOI: 10.1177/23247096221084919] [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] [Indexed: 11/20/2022] Open
Abstract
Skeletal fluorosis is a long-term bone disease that develops when prolonged fluoride toxicity leads to osteosclerosis and bone deformities that result in crippling pain and debility. The disease is endemic to many countries due to environmental or industrial exposures. However, rare cases in the United States have been reported from various causes including heavy toothpaste ingestion, excessive tea consumption, voriconazole use, and inhalant abuse. Here, we present a case of a 41-year-old man who presented for weight loss and severe joint pains due to bony sclerotic lesions found on X-rays. Social history revealed that he had been recreationally inhaling compressed air dusters used for cleaning electronics. Owing to concern for malignancy, he underwent an extensive work-up which led to a diagnosis of colon cancer, but positron emission tomography/computed tomography (PET/CT) and bone biopsy were unexpectedly negative for metastatic bone disease. Further characterization of his lesions by skeletal survey led to a diagnosis of skeletal fluorosis secondary to inhalant abuse. As in this patient, the disease can be difficult for clinicians to recognize as it can be mistaken for various boney diseases such as metastatic cancer. However, once there is clinical suspicion for skeletal fluorosis, various tests to help confirm the diagnosis can include serum and urine fluoride levels, skeletal survey, and bone ash fluoride concentration. Treatment of skeletal fluorosis primarily involves cessation of fluoride exposure, and recovery can take years. Ultimately, further study is required to develop recommendations and guidelines for diagnosis, management, and prognosis of the disease in the United States.
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Affiliation(s)
| | | | - Dustin Parsons
- Indiana University School of Medicine, Indianapolis, USA
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Ferjani HL, Zouaoui K, Maatallah K, Nessib DB, Riahi H, Kaffel D, Hamdi W. Osteomalacia and Skeletal Fluorosis: Consequential or Fortuitous Association. J Clin Rheumatol 2021; 27:S873-S874. [PMID: 32701538 DOI: 10.1097/rhu.0000000000001494] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Liu Y, Yang Y, Wei Y, Liu X, Li B, Chu Y, Huang W, Wang L, Lou Q, Guo N, Wu L, Wang J, Zhang M, Yin F, Fan C, Su M, Zhang Z, Zhang X, Gao Y, Sun D. sKlotho is associated with the severity of brick tea-type skeletal fluorosis in China. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 744:140749. [PMID: 32721666 DOI: 10.1016/j.scitotenv.2020.140749] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/18/2020] [Revised: 07/02/2020] [Accepted: 07/02/2020] [Indexed: 06/11/2023]
Abstract
The change of serum soluble Klotho (sKlotho) content is related to a variety of osteoarthropathy. However, its association with the severity of skeletal fluorosis (SF) is not clear. Here, the association of tea fluoride exposure with serum sKlotho levels and the severity of SF were investigated and further verified in a rat model of fluorosis. A cross sectional case control study was conducted in residents over 50 years old from brick-tea drinking areas in Qinghai and Xinjiang Provinces, China. Concentrations of fluoride in brick tea water and urine were determined by ion selective electrode method, and the levels of serum sKlotho were determined by ELISA method. Linear regression and ordered logistic regression models were constructed to examine the relationship among fluoride exposure, serum sKlotho levels and the severity of SF. The kidney and small intestine of Wistar rats were isolated for detection of Klotho by immunohistochemistry (IHC), and femoral artery blood was sampled to measure the serum levels of sKlotho. An increase of 1 mg/day in tea fluoride intake (TFI) was associated with a 12.070 pg/mL (95% CI: 0.452-23.689) increase in serum sKlotho levels and a 1.163-fold (95% CI: 1.007-1.342) increase in the severity of SF after adjusting for age, gender, and ethnicity. Serum sKlotho levels were also positively associated with the severity of SF (P < 0.05). The mediation analysis showed that serum sKlotho levels mediated 17.76% of the increase in the severity of SF caused by an increase of 1 mg/day of TFI. Moreover, a significant increase of serum sKlotho levels in fluoride-exposed groups was also seen in the rat model. The present study suggests that serum sKlotho may be a potential mediator of SF in brick tea-type fluorosis endemic areas.
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Affiliation(s)
- Yang Liu
- Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin 150081, Heilongjiang Province, China; Key Lab of Etiology and Epidemiology, Education Bureau of Heilongjiang Province & Ministry of Health (23618504), Harbin 150081, Heilongjiang Province, China; Heilongjiang Provincial Key Lab of Trace Elements and Human Health, Harbin 150081, Heilongjiang Province, China
| | - Yanmei Yang
- Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin 150081, Heilongjiang Province, China; Key Lab of Etiology and Epidemiology, Education Bureau of Heilongjiang Province & Ministry of Health (23618504), Harbin 150081, Heilongjiang Province, China; Heilongjiang Provincial Key Lab of Trace Elements and Human Health, Harbin 150081, Heilongjiang Province, China
| | - Yudan Wei
- Department of Community Medicine, Mercer University School of Medicine, Macon 31207, GA, USA
| | - Xiaona Liu
- Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin 150081, Heilongjiang Province, China; Key Lab of Etiology and Epidemiology, Education Bureau of Heilongjiang Province & Ministry of Health (23618504), Harbin 150081, Heilongjiang Province, China; Heilongjiang Provincial Key Lab of Trace Elements and Human Health, Harbin 150081, Heilongjiang Province, China
| | - Bingyun Li
- Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin 150081, Heilongjiang Province, China; Key Lab of Etiology and Epidemiology, Education Bureau of Heilongjiang Province & Ministry of Health (23618504), Harbin 150081, Heilongjiang Province, China; Heilongjiang Provincial Key Lab of Trace Elements and Human Health, Harbin 150081, Heilongjiang Province, China
| | - Yanru Chu
- Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin 150081, Heilongjiang Province, China; Key Lab of Etiology and Epidemiology, Education Bureau of Heilongjiang Province & Ministry of Health (23618504), Harbin 150081, Heilongjiang Province, China; Heilongjiang Provincial Key Lab of Trace Elements and Human Health, Harbin 150081, Heilongjiang Province, China
| | - Wei Huang
- Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin 150081, Heilongjiang Province, China; Key Lab of Etiology and Epidemiology, Education Bureau of Heilongjiang Province & Ministry of Health (23618504), Harbin 150081, Heilongjiang Province, China; Heilongjiang Provincial Key Lab of Trace Elements and Human Health, Harbin 150081, Heilongjiang Province, China
| | - Limei Wang
- Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin 150081, Heilongjiang Province, China; Key Lab of Etiology and Epidemiology, Education Bureau of Heilongjiang Province & Ministry of Health (23618504), Harbin 150081, Heilongjiang Province, China; Heilongjiang Provincial Key Lab of Trace Elements and Human Health, Harbin 150081, Heilongjiang Province, China
| | - Qun Lou
- Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin 150081, Heilongjiang Province, China; Key Lab of Etiology and Epidemiology, Education Bureau of Heilongjiang Province & Ministry of Health (23618504), Harbin 150081, Heilongjiang Province, China; Heilongjiang Provincial Key Lab of Trace Elements and Human Health, Harbin 150081, Heilongjiang Province, China
| | - Ning Guo
- Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin 150081, Heilongjiang Province, China; Key Lab of Etiology and Epidemiology, Education Bureau of Heilongjiang Province & Ministry of Health (23618504), Harbin 150081, Heilongjiang Province, China; Heilongjiang Provincial Key Lab of Trace Elements and Human Health, Harbin 150081, Heilongjiang Province, China
| | - Liaowei Wu
- Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin 150081, Heilongjiang Province, China; Key Lab of Etiology and Epidemiology, Education Bureau of Heilongjiang Province & Ministry of Health (23618504), Harbin 150081, Heilongjiang Province, China; Heilongjiang Provincial Key Lab of Trace Elements and Human Health, Harbin 150081, Heilongjiang Province, China
| | - Jian Wang
- Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin 150081, Heilongjiang Province, China; Key Lab of Etiology and Epidemiology, Education Bureau of Heilongjiang Province & Ministry of Health (23618504), Harbin 150081, Heilongjiang Province, China; Heilongjiang Provincial Key Lab of Trace Elements and Human Health, Harbin 150081, Heilongjiang Province, China
| | - Meichen Zhang
- Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin 150081, Heilongjiang Province, China; Key Lab of Etiology and Epidemiology, Education Bureau of Heilongjiang Province & Ministry of Health (23618504), Harbin 150081, Heilongjiang Province, China; Heilongjiang Provincial Key Lab of Trace Elements and Human Health, Harbin 150081, Heilongjiang Province, China
| | - Fanshuo Yin
- Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin 150081, Heilongjiang Province, China; Key Lab of Etiology and Epidemiology, Education Bureau of Heilongjiang Province & Ministry of Health (23618504), Harbin 150081, Heilongjiang Province, China; Heilongjiang Provincial Key Lab of Trace Elements and Human Health, Harbin 150081, Heilongjiang Province, China
| | - Chenlu Fan
- Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin 150081, Heilongjiang Province, China; Key Lab of Etiology and Epidemiology, Education Bureau of Heilongjiang Province & Ministry of Health (23618504), Harbin 150081, Heilongjiang Province, China; Heilongjiang Provincial Key Lab of Trace Elements and Human Health, Harbin 150081, Heilongjiang Province, China
| | - Mengyao Su
- Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin 150081, Heilongjiang Province, China; Key Lab of Etiology and Epidemiology, Education Bureau of Heilongjiang Province & Ministry of Health (23618504), Harbin 150081, Heilongjiang Province, China; Heilongjiang Provincial Key Lab of Trace Elements and Human Health, Harbin 150081, Heilongjiang Province, China
| | - Zaihong Zhang
- Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin 150081, Heilongjiang Province, China; Key Lab of Etiology and Epidemiology, Education Bureau of Heilongjiang Province & Ministry of Health (23618504), Harbin 150081, Heilongjiang Province, China; Heilongjiang Provincial Key Lab of Trace Elements and Human Health, Harbin 150081, Heilongjiang Province, China
| | - Xin Zhang
- Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin 150081, Heilongjiang Province, China; Key Lab of Etiology and Epidemiology, Education Bureau of Heilongjiang Province & Ministry of Health (23618504), Harbin 150081, Heilongjiang Province, China; Heilongjiang Provincial Key Lab of Trace Elements and Human Health, Harbin 150081, Heilongjiang Province, China
| | - Yanhui Gao
- Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin 150081, Heilongjiang Province, China; Key Lab of Etiology and Epidemiology, Education Bureau of Heilongjiang Province & Ministry of Health (23618504), Harbin 150081, Heilongjiang Province, China; Heilongjiang Provincial Key Lab of Trace Elements and Human Health, Harbin 150081, Heilongjiang Province, China.
| | - Dianjun Sun
- Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin 150081, Heilongjiang Province, China; Key Lab of Etiology and Epidemiology, Education Bureau of Heilongjiang Province & Ministry of Health (23618504), Harbin 150081, Heilongjiang Province, China; Heilongjiang Provincial Key Lab of Trace Elements and Human Health, Harbin 150081, Heilongjiang Province, China.
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Chu Y, Gao Y, Yang Y, Liu Y, Guo N, Wang L, Huang W, Wu L, Sun D, Gu W. β-catenin mediates fluoride-induced aberrant osteoblasts activity and osteogenesis. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2020; 265:114734. [PMID: 32806408 DOI: 10.1016/j.envpol.2020.114734] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/07/2020] [Revised: 04/07/2020] [Accepted: 05/02/2020] [Indexed: 06/11/2023]
Abstract
Excess fluoride in drinking water is an environmental issue of increasing worldwide concern, because of its adverse effect on human health. Skeletal fluorosis caused by chronic exposure to excessive fluoride is a metabolic bone disease characterized by accelerated bone turnover accompanied by aberrant activation of osteoblasts. It is not clear whether Wnt/β-catenin signaling, an important signaling pathway regulating the function of osteoblasts, mediates the pathogenesis of skeletal fluorosis. A cross-sectional case-control study was conducted in Tongyu County, Jilin Province, China showed that fluoride stimulated the levels of OCN and OPG, resulting in accelerated bone turnover in patients with skeletal fluorosis. To investigate the influence of fluoride on Wnt/β-catenin signaling pathway, 64 male BALB/c mice were allotted randomly to four groups and treated with deionized water containing 0, 55, 110 and 221 mg/L NaF for 3 months, respectively. The results demonstrated that fluoride significantly increased mouse cancellous bone formation and the protein expression of Wnt3a, phospho-GSK3β (ser 9) and Runx2. Moreover, partial correlation analysis indicated that there was no significant correlation between fluoride exposure and Runx2 protein levels, after adjusting for β-catenin, suggesting that β-catenin might play a crucial role in fluoride-induced aberrant osteogenesis. In vivo, viability of SaoS2 cells was significantly facilitated by 4 mg/L NaF, and fluoride could induce the abnormal activation of Wnt/β-catenin signaling, the expression of its target gene Runx2 and significantly increased Tcf/Lef reporter activity. Importantly, inhibition of β-catenin suppressed fluoride-induced Runx2 protein expression and the osteogenic phenotypes. Taken together, the present study provided in vivo and in vitro evidence reveals a potential mechanism for fluoride-induced aberrant osteoblast activation and indicates that β-catenin is the pivot molecule mediating viability and differentiation of osteoblasts and might be a therapeutic target for skeletal fluorosis.
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Affiliation(s)
- Yanru Chu
- Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin, 150081, Heilongjiang Province, China; Key Lab of Etiology and Epidemiology, Education Bureau of Heilongjiang Province & Ministry of Health (23618504), Harbin Medical University, Harbin, 150081, Heilongjiang Province, China; Heilongjiang Provincial Key Lab of Trace Elements and Human Health Harbin Medical University, Harbin, 150081, Heilongjiang Province, China
| | - Yanhui Gao
- Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin, 150081, Heilongjiang Province, China; Key Lab of Etiology and Epidemiology, Education Bureau of Heilongjiang Province & Ministry of Health (23618504), Harbin Medical University, Harbin, 150081, Heilongjiang Province, China; Heilongjiang Provincial Key Lab of Trace Elements and Human Health Harbin Medical University, Harbin, 150081, Heilongjiang Province, China
| | - Yanmei Yang
- Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin, 150081, Heilongjiang Province, China; Key Lab of Etiology and Epidemiology, Education Bureau of Heilongjiang Province & Ministry of Health (23618504), Harbin Medical University, Harbin, 150081, Heilongjiang Province, China; Heilongjiang Provincial Key Lab of Trace Elements and Human Health Harbin Medical University, Harbin, 150081, Heilongjiang Province, China
| | - Yang Liu
- Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin, 150081, Heilongjiang Province, China; Key Lab of Etiology and Epidemiology, Education Bureau of Heilongjiang Province & Ministry of Health (23618504), Harbin Medical University, Harbin, 150081, Heilongjiang Province, China; Heilongjiang Provincial Key Lab of Trace Elements and Human Health Harbin Medical University, Harbin, 150081, Heilongjiang Province, China
| | - Ning Guo
- Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin, 150081, Heilongjiang Province, China; Key Lab of Etiology and Epidemiology, Education Bureau of Heilongjiang Province & Ministry of Health (23618504), Harbin Medical University, Harbin, 150081, Heilongjiang Province, China; Heilongjiang Provincial Key Lab of Trace Elements and Human Health Harbin Medical University, Harbin, 150081, Heilongjiang Province, China
| | - Limei Wang
- Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin, 150081, Heilongjiang Province, China; Key Lab of Etiology and Epidemiology, Education Bureau of Heilongjiang Province & Ministry of Health (23618504), Harbin Medical University, Harbin, 150081, Heilongjiang Province, China; Heilongjiang Provincial Key Lab of Trace Elements and Human Health Harbin Medical University, Harbin, 150081, Heilongjiang Province, China
| | - Wei Huang
- Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin, 150081, Heilongjiang Province, China; Key Lab of Etiology and Epidemiology, Education Bureau of Heilongjiang Province & Ministry of Health (23618504), Harbin Medical University, Harbin, 150081, Heilongjiang Province, China; Heilongjiang Provincial Key Lab of Trace Elements and Human Health Harbin Medical University, Harbin, 150081, Heilongjiang Province, China
| | - Liaowei Wu
- Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin, 150081, Heilongjiang Province, China; Key Lab of Etiology and Epidemiology, Education Bureau of Heilongjiang Province & Ministry of Health (23618504), Harbin Medical University, Harbin, 150081, Heilongjiang Province, China; Heilongjiang Provincial Key Lab of Trace Elements and Human Health Harbin Medical University, Harbin, 150081, Heilongjiang Province, China
| | - Dianjun Sun
- Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin, 150081, Heilongjiang Province, China; Key Lab of Etiology and Epidemiology, Education Bureau of Heilongjiang Province & Ministry of Health (23618504), Harbin Medical University, Harbin, 150081, Heilongjiang Province, China; Heilongjiang Provincial Key Lab of Trace Elements and Human Health Harbin Medical University, Harbin, 150081, Heilongjiang Province, China
| | - Weikuan Gu
- Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin, 150081, Heilongjiang Province, China; Department of Orthopedic Surgery and BME-Campbell Clinic, University of Tennessee Health Science Center, Memphis, 38163, TN, USA; Research Service, Veterans Affairs Medical Center, Memphis, 38104, TN, USA.
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Zulfiqar S, Ajaz H, Rehman SU, Elahi S, Shakeel A, Yasmeen F, Altaf S. Effect of excess Fluoride consumption on Urine-Serum Fluorides, Dental state and Thyroid Hormones among children in “Talab Sarai” Punjab Pakistan. OPEN CHEM 2020. [DOI: 10.1515/chem-2020-0012] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Abstract190 children aged 7-18 years from an endemic fluorotic village “Talab Sarai (n = 130) and a non-fluorotic, control, village “Ottawa” (n = 60) were selected for comparison. Children were examined for fluoride (F-) concentration in drinking water, urine, and serum as well as Dental fluorosis (DF) and thyroid hormone levels. The mean concentration of water fluoride (WF) in the sample group was 6.23 mg/L, urine fluoride (UF) 3.38 mg/L, and serum fluoride (SF) 0.21 mg/L, while DF was 93.07%. Significant elevations (P = 0.000) in the concentration of all these four variables were observed in sample group children as compared to control. Mean Free Tetra-iodothyronine (FT4), Free Tri-iodothyronine (FT3) and Thyroid Stimulating Hormone (TSH) concentrations in the sample group were 16.64pmol/L, 5.57 pmol /L and 4.41 mlU/L, respectively. No marked difference in FT4 (P = 0.1) was noted, while significant elevations in FT3 and TSH (P = 0.000) were found in the sample relative to the control group. 80% of the children displayed clear thyroid hormonal derangements, with 36.92% having high TSH and 43.07% with FT3 and FT4 disorders. A moderate to strong correlation among WF, UF, SF and DF (r = 0.94, 0.60, 0.60, 0.72) and a very strong correlation between WF and TSH (r = 0.9) were observed. Our results suggest that excess F- level that is four times greater than the “safe limit” is not only increasing fluoride concentration in body fluids but is also affecting thyroid hormones in 4 out of 5 children which could lead to abnormal physical and mental growth in later developmental stages.
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Affiliation(s)
- Sadia Zulfiqar
- Department of Chemistry, University of Engineering & Technology, Lahore, Pakistan
| | - Humayun Ajaz
- Department of Chemistry, University of Engineering & Technology, Lahore, Pakistan
| | - Shafiq ur Rehman
- Faculty of Sciences, University of Central Punjab, Lahore, Pakistan
| | - Shan Elahi
- Centre for Nuclear Medicine (CENUM), Mayo Hospital, Lahore, Pakistan
| | - Amer Shakeel
- University of Management & Technology, Lahore, Pakistan
| | - Farhat Yasmeen
- Department of Chemistry, University of Engineering & Technology, Lahore, Pakistan
| | - Shehnila Altaf
- Department of Chemistry, University of Engineering & Technology, Lahore, Pakistan
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11
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Sellami M, Riahi H, Maatallah K, Ferjani H, Bouaziz MC, Ladeb MF. Skeletal fluorosis: don't miss the diagnosis! Skeletal Radiol 2020; 49:345-357. [PMID: 31501957 DOI: 10.1007/s00256-019-03302-0] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/04/2019] [Revised: 08/18/2019] [Accepted: 08/20/2019] [Indexed: 02/02/2023]
Abstract
Skeletal fluorosis is a rare toxic osteopathy characterized by massive bone fixation of fluoride. The disease occurs as an endemic problem in some parts of the world and is the result of prolonged ingestion or rarely by inhalation of high amounts of fluoride. Radiographic presentation is mainly characterized by bone changes with osteocondensation and later ossification of many ligaments and interosseous membranes. Skeletal fluorosis is not clinically obvious and can be confused with other rheumatologic disorders. Its severity lies in the development of skeletal deformities and neurological complications. Management of fluorosis generally focuses on symptom treatment.
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Affiliation(s)
- Meriem Sellami
- Radiology Department, Orthopaedic Institute M T Kassab, University of Tunis El Manar- Faculty of Medicine of Tunis, Ksar Said, 2010, Manouba, Tunisia.
| | - Hend Riahi
- Radiology Department, Orthopaedic Institute M T Kassab, University of Tunis El Manar- Faculty of Medicine of Tunis, Ksar Said, 2010, Manouba, Tunisia
| | - Kaouther Maatallah
- Rheumatology Department, Orthopaedic Institute M T Kassab, University of Tunis El Manar- Faculty of Medicine of Tunis, Manouba, Tunisia
| | - Hanen Ferjani
- Rheumatology Department, Orthopaedic Institute M T Kassab, University of Tunis El Manar- Faculty of Medicine of Tunis, Manouba, Tunisia
| | - Mouna Chelli Bouaziz
- Radiology Department, Orthopaedic Institute M T Kassab, University of Tunis El Manar- Faculty of Medicine of Tunis, Ksar Said, 2010, Manouba, Tunisia
| | - Mohamed Fethi Ladeb
- Radiology Department, Orthopaedic Institute M T Kassab, University of Tunis El Manar- Faculty of Medicine of Tunis, Ksar Said, 2010, Manouba, Tunisia
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12
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Lacson CFZ, Lu MC, Huang YH. Fluoride network and circular economy as potential model for sustainable development-A review. CHEMOSPHERE 2020; 239:124662. [PMID: 31499305 DOI: 10.1016/j.chemosphere.2019.124662] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/13/2019] [Revised: 08/13/2019] [Accepted: 08/23/2019] [Indexed: 06/10/2023]
Abstract
Fluorine is the most reactive elements among the halogen group and commonly and ubiquitously occurs as fluoride in nature. The industrial processes produce fluoride by-products causing the increase of unwanted environmental levels and consequently posing risk on human and environmental health worldwide. This review gives a fundamental understanding of fluoride networks in the industrial processes, in the geological and hydrological transport, and in the biological sphere. Numerous biological pathways of fluoride also increase the risk of exposure. Literature shows that various environmental levels of fluoride due to its chemical characteristics cause bioaccumulation resulting in health deterioration among organisms. These problems are aggravated by emitted fluoride in the air and wastewater streams. Moreover, the current waste disposal dependent on incineration and landfilling superpose to the problem. In our analysis, the fluoride material flow model still follows a linear economy and reuse economy to some extent. This flow model spoils resources with high economic potential and worsens environmental problems. Thus, we intend a shift from the conventional linear economy to a circular economy with the revival of three-dimensional objectives of sustainable development. Linkages between key dimensions of the circular economy to stimulate momentum for perpetual sustainable development are proposed to gain economic, environmental and social benefits.
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Affiliation(s)
- Carl Francis Z Lacson
- Department of Chemical Engineering, Sustainable Environment Research Center, National Cheng Kung University, Tainan, 701, Taiwan
| | - Ming-Chun Lu
- Department of Environmental Resources Management, Chia Nan University of Pharmacy and Science, Tainan, 71710, Taiwan.
| | - Yao-Hui Huang
- Department of Chemical Engineering, Sustainable Environment Research Center, National Cheng Kung University, Tainan, 701, Taiwan.
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13
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Nelson EA, Halling CL, Buikstra JE. Evidence of Skeletal Fluorosis at the Ray Site, Illinois, USA: a pathological assessment and discussion of environmental factors. INTERNATIONAL JOURNAL OF PALEOPATHOLOGY 2019; 26:48-60. [PMID: 31228793 DOI: 10.1016/j.ijpp.2019.05.003] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/01/2019] [Revised: 04/28/2019] [Accepted: 05/13/2019] [Indexed: 06/09/2023]
Abstract
OBJECTIVE To carefully assess skeletal lesions in close environment context in order to evaluate whether skeletal fluorosis was present in individuals living in the prehistoric Midwest, USA. MATERIALS Skeletal remains from minimally 117 individuals recovered from the Ray Site, located in western Illinois (USA) and dated to the Middle/early Late Woodland periods (50 BC-AD 400). METHODS Macroscopic evaluation of all recovered skeletal elements. RESULTS Eight individuals display a constellation of abnormal bony changes, including osteosclerosis, a high frequency of fractures, and dental abnormalities. CONCLUSIONS The osteosclerotic changes along with the naturally high fluoride content of west central Illinois soil and water suggests the presence of skeletal fluorosis. SIGNIFICANCE This is the first report of skeletal fluorosis from archaeologically recovered human remains from North America. LIMITATIONS The ambiguous nature of the skeletal changes associated with fluorosis, especially in the less severe stages of the disease, renders determination of the etiology difficult. SUGGESTIONS FOR FURTHER RESEARCH The continuation of paleopathological investigations of fluoride toxicity within archaeological communities recovered from this region with emphasis on the incorporation of biomedical and environmental data. Furthermore, complementary analyses of the chemical composition and the histological presentation of the skeletons could provide support for this diagnosis.
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Affiliation(s)
- Elizabeth A Nelson
- Department of Archaeogenetics, Max Planck Institute for the Science of Human History, Jena, Germany.
| | | | - Jane E Buikstra
- Center for Bioarchaeological Research, Arizona State University, United States
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14
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Xi J, Zhang L, Peng C, Zhou J, Peng Y, Xu L, Chen B, Meng Q, Hou R, Li D, Zhang Y, Wan X, Cai H. Flavor augmentations affect fluoride bioavailability from brewed dark tea. Lebensm Wiss Technol 2019. [DOI: 10.1016/j.lwt.2019.04.018] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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15
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Ponce A, Oakes JA, Eggleston W. Acute skeletal fluorosis in the setting of 1,1-difluoroethane abuse. Clin Toxicol (Phila) 2018; 57:374-375. [PMID: 30449202 DOI: 10.1080/15563650.2018.1527034] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- Alex Ponce
- a Nesbitt School of Pharmacy , Wilkes University , Wilkes-Barre , PA , USA
| | - Jennifer A Oakes
- b Department of Emergency Medicine , Dignity Health St. Joseph's Medical Center , Stockton , CA , USA
| | - William Eggleston
- c Binghamton University School of Pharmacy and Pharmaceutical Sciences , Binghamton , NY , USA.,d Department of Emergency Medicine , SUNY Upstate Medical University , Syracuse , NY , USA
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16
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Morgan SL, Prater GL. Quality in dual-energy X-ray absorptiometry scans. Bone 2017; 104:13-28. [PMID: 28159711 DOI: 10.1016/j.bone.2017.01.033] [Citation(s) in RCA: 61] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/24/2016] [Revised: 01/17/2017] [Accepted: 01/29/2017] [Indexed: 11/27/2022]
Abstract
Dual-energy X-ray absorptiometry (DXA) is the gold standard for measuring bone mineral density (BMD), making the diagnosis of osteoporosis, and for monitoring changes in BMD over time. DXA data are also used in the determination of fracture risk. Procedural steps in DXA scanning can be broken down into scan acquisition, analysis, interpretation, and reporting. Careful attention to quality control pertaining to these procedural steps should theoretically be beneficial in patient management. Inattention to procedural steps and errors that may occur at each step has the possibility of providing information that would inform inappropriate clinical decisions, generating unnecessary healthcare expenses and ultimately causing avoidable harm to patients. This article reviews errors in DXA scanning that affect trueness and precision related to the machine, the patient, and the technologist and reviews articles which document problems with DXA quality in clinical and research settings. An understanding of DXA errors is critical for DXA quality; programs such as certification of DXA technologists and interpreters help in assuring quality bone densitometry. As DXA errors are common, pay for performance requiring DXA technologists and interpreters to be certified and follow quality indicators is indicated.
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Affiliation(s)
- Sarah L Morgan
- Division of Clinical Immunology and Rheumatology, University of Alabama at Birmingham Osteoporosis Prevention and Treatment Clinic, Bone Densitometry Unit, USA.
| | - Ginnie L Prater
- Division of Gerontology, Geriatrics and Palliative Care, The Department of Medicine, School of Medicine, The University of Alabama at Birmingham, Birmingham, AL, USA
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Bin G, Liu H, Zhao C, Zhou G, Ding X, Zhang N, Xu Y, Qi Y. Refractive Errors in Northern China Between the Residents with Drinking Water Containing Excessive Fluorine and Normal Drinking Water. Biol Trace Elem Res 2016; 173:259-67. [PMID: 26920734 DOI: 10.1007/s12011-016-0647-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/11/2015] [Accepted: 02/10/2016] [Indexed: 10/22/2022]
Abstract
The purpose of this study was to evaluate the refractive errors and the demographic associations between drinking water with excessive fluoride and normal drinking water among residents in Northern China. Of the 1843 residents, 1415 (aged ≥40 years) were divided into drinking-water-excessive fluoride (DWEF) group (>1.20 mg/L) and control group (≤1.20 mg/L) on the basis of the fluoride concentrations in drinking water. Of the 221 subjects in the DWEF group, with 1.47 ± 0.25 mg/L (fluoride concentrations in drinking water), the prevalence rates of myopia, hyperopia, and astigmatism were 38.5 % (95 % confidence interval [CI] = 32.1-45.3), 19.9 % (95 % CI = 15-26), and 41.6 % (95 % CI = 35.1-48.4), respectively. Of the 1194 subjects in the control group with 0.20 ± 0.18 mg/L, the prevalence of myopia, hyperopia, and astigmatism were 31.5 % (95 % CI = 28.9-34.2), 27.6 % (95 % CI = 25.1-30.3), and 45.6 % (95 % CI = 42.8-48.5), respectively. A statistically significant difference was not observed in the association of spherical equivalent and fluoride concentrations in drinking water (P = 0.84 > 0.05). This report provides the data of the refractive state of the residents consuming drinking water with excess amounts of fluoride in northern China. The refractive errors did not result from ingestion of mild excess amounts of fluoride in the drinking water.
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Affiliation(s)
- Ge Bin
- Department of Ophthalmology, The Second Affiliated Hospital of Harbin Medical University, 246 Xuefu Street, Harbin, China
| | - Haifeng Liu
- Department of Ophthalmology, The Second Affiliated Hospital of Harbin Medical University, 246 Xuefu Street, Harbin, China
| | - Chunyuan Zhao
- Department of Ophthalmology, The Second Affiliated Hospital of Harbin Medical University, 246 Xuefu Street, Harbin, China
| | - Guangkai Zhou
- Department of Ophthalmology, The Second Affiliated Hospital of Harbin Medical University, 246 Xuefu Street, Harbin, China
| | - Xuchen Ding
- Department of Ophthalmology, The Second Affiliated Hospital of Harbin Medical University, 246 Xuefu Street, Harbin, China
| | - Na Zhang
- Department of Ophthalmology, The Second Affiliated Hospital of Harbin Medical University, 246 Xuefu Street, Harbin, China
| | - Yongfang Xu
- Department of Ophthalmology, The Second Affiliated Hospital of Harbin Medical University, 246 Xuefu Street, Harbin, China
| | - Yanhua Qi
- Department of Ophthalmology, The Second Affiliated Hospital of Harbin Medical University, 246 Xuefu Street, Harbin, China.
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Mostafaei F, Blake SP, Liu Y, Sowers DA, Nie LH. Compact DD generator-based neutron activation analysis (NAA) system to determine fluorine in human bone in vivo: a feasibility study. Physiol Meas 2015; 36:2057-67. [PMID: 26289795 DOI: 10.1088/0967-3334/36/10/2057] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
The subject of whether fluorine (F) is detrimental to human health has been controversial for many years. Much of the discussion focuses on the known benefits and detriments to dental care and problems that F causes in bone structure at high doses. It is therefore advantageous to have the means to monitor F concentrations in the human body as a method to directly assess exposure. F accumulates in the skeleton making bone a useful biomarker to assess long term cumulative exposure to F. This study presents work in the development of a non-invasive method for the monitoring of F in human bone. The work was based on the technique of in vivo neutron activation analysis (IVNAA). A compact deuterium-deuterium (DD) generator was used to produce neutrons. A moderator/reflector/shielding assembly was designed and built for human hand irradiation. The gamma rays emitted through the (19)F(n,γ)(20)F reaction were measured using a HPGe detector. This study was undertaken to (i) find the feasibility of using DD system to determine F in human bone, (ii) estimate the F minimum detection limit (MDL), and (iii) optimize the system using the Monte Carlo N-Particle eXtended (MCNPX) code in order to improve the MDL of the system. The F MDL was found to be 0.54 g experimentally with a neutron flux of 7 × 10(8) n s(-1) and an optimized irradiation, decay, and measurement time scheme. The numbers of F counts from the experiment were found to be close to the (MCNPX) simulation results with the same irradiation and detection parameters. The equivalent dose to the irradiated hand and the effective dose to the whole body were found to be 0.9 mSv and 0.33 μSv, respectively. Based on these results, it is feasible to develop a compact DD generator based IVNAA system to measure bone F in a population with moderate to high F exposure.
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Coexistence of two sclerotic bone diseases manifesting as spondyloarthropathy: Double trouble. Bone Rep 2015; 2:89-91. [PMID: 28377959 PMCID: PMC5365166 DOI: 10.1016/j.bonr.2015.05.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/16/2014] [Revised: 05/06/2015] [Accepted: 05/14/2015] [Indexed: 11/24/2022] Open
Abstract
Hypoparathyroidism and fluorosis are two distinct sclerotic bone diseases. Both have high BMD but they behave differently. Fluorosis causes secondary hyperparathyroidism and has been reported to cause renal dysfunction. Here we discuss a case that coincidentally had both the disorders and their interaction. Hypoparathyroidism and fluorosis both have high BMD but they behave differently. Both the disorders may present as spondyloarthropathy. These two disorders interact with each other to modify the clinical, biochemical and radiological outcome.
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20
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Mostafaei F, McNeill FE, Chettle DR, Wainman BC, Pidruczny AE, Prestwich WV. Measurements of fluorine in contemporary urban Canadians: a comparison of the levels found in human bone usingin vivoandex vivoneutron activation analysis. Physiol Meas 2015; 36:465-87. [DOI: 10.1088/0967-3334/36/3/465] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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21
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Li M, Cui J, Gao Y, Zhang W, Sun L, Liu X, Liu Y, Sun D. Pathological changes and effect on the learning and memory ability in rats exposed to fluoride and aluminum. Toxicol Res (Camb) 2015. [DOI: 10.1039/c5tx00050e] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The aim of this study is to establish a single and combined intoxication model of fluoride and aluminum so as to observe the impact of these chemicals on the learning and memory ability and the pathologic changes in the brains of rats.
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Affiliation(s)
- Mang Li
- Center for Endemic Disease Control
- Chinese Center for Disease Control and Prevention
- Harbin Medical University
- Harbin 150081
- China
| | - Jing Cui
- Center for Endemic Disease Control
- Chinese Center for Disease Control and Prevention
- Harbin Medical University
- Harbin 150081
- China
| | - Yanhui Gao
- Center for Endemic Disease Control
- Chinese Center for Disease Control and Prevention
- Harbin Medical University
- Harbin 150081
- China
| | - Wei Zhang
- Center for Endemic Disease Control
- Chinese Center for Disease Control and Prevention
- Harbin Medical University
- Harbin 150081
- China
| | - Liyan Sun
- Center for Endemic Disease Control
- Chinese Center for Disease Control and Prevention
- Harbin Medical University
- Harbin 150081
- China
| | - Xiaona Liu
- Center for Endemic Disease Control
- Chinese Center for Disease Control and Prevention
- Harbin Medical University
- Harbin 150081
- China
| | - Yang Liu
- Center for Endemic Disease Control
- Chinese Center for Disease Control and Prevention
- Harbin Medical University
- Harbin 150081
- China
| | - Dianjun Sun
- Center for Endemic Disease Control
- Chinese Center for Disease Control and Prevention
- Harbin Medical University
- Harbin 150081
- China
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22
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Cohen E, Hsu RY, Evangelista P, Aaron R, Rubin LE. Rapid-Onset Diffuse Skeletal Fluorosis from Inhalant Abuse: A Case Report. JBJS Case Connect 2014; 4:e108. [PMID: 29252776 DOI: 10.2106/jbjs.cc.n.00085] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Abstract
CASE A thirty-year-old man presented with severely debilitating left hip pain and stiffness. Radiographs demonstrated diffuse osteosclerosis and heterotopic bone formation with near ankylosis of the left hip. The patient underwent successful joint-preserving surgery to restore hip range of motion. After disclosing a history of inhalant abuse, which was confirmed by elevated serum fluoride levels, he was diagnosed with diffuse skeletal fluorosis. CONCLUSIONS To the best of our knowledge, we present the first reported case of diffuse skeletal fluorosis caused by inhalant abuse of 1,1-difluoroethane. Skeletal fluorosis is uncommon in the United States but is important to consider in the differential diagnosis when a patient presents with otherwise unexplained joint pain and osteosclerosis.
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Affiliation(s)
- Eric Cohen
- Departments of Orthopedics (E.C., R.Y.H., R.A., and L.E.R.) and Diagnostic Imaging (P.E.), Brown Alpert Medical School/Rhode Island Hospital, 593 Eddy Street, Providence, RI 02903.
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Wang W, Xu J, Liu K, Liu X, Li C, Cui C, Zhang Y, Li H. Suppression of Sclerostin and Dickkopf-1 levels in patients with fluorine bone injury. ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY 2013; 35:402-407. [PMID: 23467116 DOI: 10.1016/j.etap.2013.01.005] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/02/2012] [Revised: 12/28/2012] [Accepted: 01/02/2013] [Indexed: 06/01/2023]
Abstract
Evidence has been accumulating for the role of Sclerostin and Dickkopf-1 as the antagonists of Wnt/β-Catenin signaling pathway, which suppresses bone formation through inhibiting osteoblastic function. To get deep-inside information about the expression of the antagonists in patients with fluorine bone injury, a case-control study was conducted in two counties in Hubei Province. Urinary and serum fluoride were significantly higher in patients with fluorine bone injury than in healthy controls. Additionally, patients with fluorine bone injury had significantly lower serum Sclerostin and Dickkopf-1 levels compared with healthy controls (P<0.001). Serum Sclerostin and Dickkopf-1 levels were significantly correlated with serum fluoride in all studied subjects (n=186). Low Sclerostin and Dickkopf-1 levels were associated with a significantly increased risk of fluorine bone injury. In conclusion, serum Sclerostin and Dickkopf-1 might be used as important markers of bone metabolism change and potential therapeutic targets to treat fluorine bone injury.
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Affiliation(s)
- Wenpeng Wang
- Key Laboratory of Environment and Health, Ministry of Education, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
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Mostafaei F, McNeill FE, Chettle DR, Prestwich WV, Inskip M. Design of a phantom equivalent to measure bone-fluorine in a human's hand via delayed neutron activation analysis. Physiol Meas 2013; 34:503-12. [DOI: 10.1088/0967-3334/34/5/503] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Ahmed I, Sohail S, Hussain M, Khan N, Hameed Khan M. MRI features of spinal Fluorosis: Results of an endemic community screening. Pak J Med Sci 2013; 29:177-80. [PMID: 24353535 PMCID: PMC3809195 DOI: 10.12669/pjms.291.3200] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2012] [Revised: 11/10/2012] [Accepted: 11/15/2012] [Indexed: 11/16/2022] Open
Abstract
OBJECTIVES Fluorosis is endemic in many parts of the world. However community studies on MRI features of fluorosis are lacking. The aim of this study was to determine MRI features of spinal changes in a community with endemic fluorosis in the Thar Desert Pakistan. METHODOLOGY Randomly selected adults from the Village Samorindh, district Tharparker, Sindh, Pakistan, with spinal fluorosis diagnosed on plain x-rays and raised serum fluoride levels were studied from June 2008 to January 2009. MRI was carried out on 0.5 T open magnet MRI system. Features of vertebral body, spinal ligaments, intervertebral disc, facet joints, iliac wings and other incidental findings were noted. Sclerosis was defined as low signal intensity on both T1 and T2 weighted images. RESULTS were described as mean and percentage values. RESULTS All the studied 27 subjects complained of back ache without neurological signs. The average age was 43.33 ± 10.45 years; 21 being male (77.8%). The most frequent findings included generalized vertebral sclerosis (24, 88.8%), ligamentum flavum hypertrophy (23, 85%), anterior (20, 74%) and lateral (17, 62.9%) disc herniation, thickened longitudinal ligaments, and narrowing of spinal foramina. Hemangioma was seen in 04(14.8%). The most commonly involved level was L1-2, L4-5 and lower dorsal spine. CONCLUSION Vertebral sclerosis, a combination of premature degeneration with anterior disc herniation and an unusually high frequency of vertebral hemangioma formed the spectrum of MRI findings in subjects with spinal fluorosis having back ache but no neurological findings.
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Affiliation(s)
- Iftekhar Ahmed
- Iftekhar Ahmed, MBBS, MCPS, FCPS, Professor of Medicine, Dow University of Health Sciences, Karachi, Pakistan
| | - Saba Sohail
- Saba Sohail, MBBS, MCPS, FCPS, Professor Radiology, Dow Medical College, Dow University of Health Sciences, Karachi, Pakistan
| | - Munawwar Hussain
- Munawwar Hussain, MBBS, FCPS, Assistant Professor of Radiology,Dow International Medical College, Dow University of Health Sciences, Karachi, Pakistan
| | - Nazeer Khan
- Nazeer Khan, MSC, MS, PhD (Canada), Director of Research & Professor of Biostatistics, Dow University of Health Sciences, Karachi, Pakistan
| | - Masood Hameed Khan
- Masood Hameed Khan, MCPS, FCPS, FRCP, PhD, Professor of Medicine, Dow University of Health Sciences, Karachi, Pakistan
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Abstract
Published reports on patients with skeletal fluorosis undergoing total knee arthroplasty are rare. Skeletal fluorosis is a chronic condition that occurs secondary to the ingestion of food and water that contain high levels of fluoride. Although fluorosis may be described as osteosclerotic and marble-like in appearance, features may also include characteristics of osteomalacia and osteoporosis. This article describes the case of a 67-year-old man with skeletal fluorosis who underwent total knee arthroplasty complicated by fracture. An intramedullary guide was used for the proximal tibia and distal femoral bone cuts intraoperatively. Following the completion of the femoral bone cuts, it was noted that the drill used to open the femoral canal had breached the medial femoral cortex. Multiple fractures were seen in both femoral condyles. A revision femoral stem was chosen to complete the total knee arthroplasty but, after further manipulation of the femur, it appeared that the fracture had displaced. A LISS plate (Synthes, West Chester, Pennsylvania) was used to ensure fracture reduction and implant stability. The remainder of the procedure was completed without complication. One year postoperatively, functional knee range of motion was limited to 70° of flexion. Radiographs showed signs of healing and satisfactory implant position. This case highlights the importance of the preoperative examination and the need to fully appreciate the bone quality of patients prior to undertaking an orthopedic procedure. Variation from the use of intramedullary guides should be considered in patients with questionable bone quality undergoing total knee arthroplasty.
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Affiliation(s)
- Mark Paiste
- Philadelphia College of Osteopathic Medicine, Philadelphia, Pennsylvania, USA
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FLUOROSIS AS A PROBABLE FACTOR IN METABOLIC BONE DISEASE IN CAPTIVE NEW ZEALAND NATIVE FROGS (LEIOPELMASPECIES). J Zoo Wildl Med 2012; 43:549-65. [DOI: 10.1638/2011-0276r1.1] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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Fernandes MDS, Yanai MM, Martins GM, Iano FG, Leite AL, Cestari TM, Taga R, Buzalaf MAR, de Oliveira RC. Effects of fluoride in bone repair: an evaluation of RANKL, OPG and TRAP expression. Odontology 2012; 102:22-30. [DOI: 10.1007/s10266-012-0083-0] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2011] [Accepted: 07/11/2012] [Indexed: 11/28/2022]
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Liu XL, Li CC, Liu KJ, Cui CY, Zhang YZ, Liu Y. The influence of fluoride on the expression of inhibitors of Wnt/β-catenin signaling pathway in rat skin fibroblast Cells. Biol Trace Elem Res 2012; 148:117-21. [PMID: 22290293 DOI: 10.1007/s12011-012-9333-9] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/30/2011] [Accepted: 01/11/2012] [Indexed: 11/25/2022]
Abstract
The effective therapy of fluoride-induced bone diseases requires an understanding of the mechanism of the disorders. Changes in the inhibitors of the Wnt/β-catenin pathway, Dickkopf-1 (Dkk-1) and Sclerostin (SOST),were studied in supernatants harvested from rat skin fibroblasts cultured with varied doses of fluoride. The contents of SOST and Dkk-1 in fibroblast supernatants were assessed at four exposure time-points and investigated by using the method of ELISA. Compared to the relevant controls(0 mg F(−)/L), a significant decrease of the concentrations of SOST and Dkk-1 was observed as the fluoride concentration increased. Compared to the relevant time controls (24 h), a significant decrease of the concentrations of SOST and Dkk-1 was observed with the extension of time. Our results suggest that the Wnt/β-catenin pathway inhibitors Dkk-1 and SOST play an important role in skeletal fluorosis. They can be used as important indications for diagnosing bone metabolism changes caused by fluoride exposure and therapeutic targets in diseases resulting from fluoride exposure.
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Affiliation(s)
- Xiao-Li Liu
- Department of Occupational and Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Hubei Wuhan 430030, People’s Republic of China
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Błaszczyk I, Birkner E, Gutowska I, Romuk E, Chlubek D. Influence of methionine and vitamin E on fluoride concentration in bones and teeth of rats exposed to sodium fluoride in drinking water. Biol Trace Elem Res 2012; 146:335-9. [PMID: 22068731 DOI: 10.1007/s12011-011-9251-2] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/29/2011] [Accepted: 10/25/2011] [Indexed: 01/24/2023]
Abstract
Increased exposure to fluorine-containing compounds leads to accumulation of fluorides in hard tissues of bones and teeth, which may result in numerous skeletal and dental disorders. This study evaluates the influence of methionine and vitamin E on fluoride concentration in bones and teeth of rats subjected to long-term exposure to sodium fluoride in drinking water. The study was conducted in 30 3-month-old female Wistar FL rats. The animals were divided into five groups, six rats per group. The control group consisted of rats receiving only distilled water as drinking water. All other groups received NaF in the amount of 10 mg/kg of body mass/day in their drinking water. In addition, respective animal groups received: NaF + Met group--10 mg of methionine/kg of body mass/day, NaF + Met + E group--10 mg of methionine/kg of body mass/day and 3 mg of vitamin E (tocopheroli acetas)/rat/day and NaF + E group--3 mg of vitamin E/rat/day. Femoral bones and incisor teeth were collected for the study, and the fluoride concentration was determined using a fluoride ion-selective electrode. Fluoride concentration in both bones and teeth was found to be higher in the NaF and NaF + Met groups compared to the control group. In groups NaF + Met + E and NaF + E, the study material contained much lower fluoride concentration compared to the NaF group, while the effect was more prominent in the NaF + E group. The results of the studies indicate that methionine and vitamin E have opposite effects on accumulation of fluorides in hard tissue in rats. By stimulating fluoride accumulation, methionine reduces the adverse effect of fluorides on soft tissue, while vitamin E, which prevents excessive accumulation of fluorides in bones and teeth, protects these tissues from fluorosis. Therefore, it seems that combined application of both compounds would be optimal for the prevention of the adverse effects of chronic fluoride intoxication.
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Affiliation(s)
- Iwona Błaszczyk
- Department of Biochemistry, Silesian Medical University, 19 Jordana Str., 41-808 Zabrze, Poland.
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Chamberlain M, Gräfe JL, Byun SH, Chettle DR, Egden LM, Orchard GM, Webber CE, McNeill FE. The feasibility ofin vivoquantification of bone-fluorine in humans by delayed neutron activation analysis: a pilot study. Physiol Meas 2012; 33:243-57. [DOI: 10.1088/0967-3334/33/2/243] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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32
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Agalakova NI, Gusev GP. Effect of inorganic fluoride on living organisms of different phylogenetic level. J EVOL BIOCHEM PHYS+ 2011. [DOI: 10.1134/s002209301105001x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Koroglu BK, Ersoy IH, Koroglu M, Balkarli A, Ersoy S, Varol S, Tamer MN. Serum parathyroid hormone levels in chronic endemic fluorosis. Biol Trace Elem Res 2011; 143:79-86. [PMID: 20838920 DOI: 10.1007/s12011-010-8847-2] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/22/2010] [Accepted: 09/06/2010] [Indexed: 11/25/2022]
Abstract
Endemic waterborne fluorosis is a public health problem in Isparta, a city located in southern Turkey. Fluoride is a cumulative element that increases metabolic turnover of the bone and also affects the homeostasis of bone mineral metabolism. There are number of similarities between the effects of excess parathyroid hormone (PTH) and fluorosis on bone. So fluoride might show its effect via PTH. We aimed to determine PTH levels in patients with endemic fluorosis to estimate the possible toxic effects of chronic fluoride intake. Fifty-six patients with endemic fluorosis and 28 age-, sex-, and body-mass-index-matched healthy controls were included in this study. Endemic fluorosis was diagnosed according to the clinical diagnosis criteria of Wang. The urine fluoride levels of fluorosis patients were significantly higher than those of control subjects as expected (1.9 ± 0.1 vs. 0.4 ± 0.1 mg/L, respectively; P < 0.001). PTH levels in fluorosis group were significantly higher than control group (65.09 ± 32.91 versus 47.40 ± 20.37, respectively; P = 0.01). The results of our study demonstrate that serum PTH levels are increased in patients with endemic fluorosis. Fluoride, by interfering calcium balance, may be the cause of secondary hyperparathyroidism.
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Affiliation(s)
- Banu Kale Koroglu
- Department of Internal Medicine, Division of Endocrinology and Metabolism, Suleyman Demirel University, Isparta, Turkey.
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Interactive effect of fluoride burden with calcitonin receptor gene polymorphisms on the risk of F bone injury. Int Arch Occup Environ Health 2010; 84:533-8. [DOI: 10.1007/s00420-010-0602-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2010] [Accepted: 11/04/2010] [Indexed: 11/25/2022]
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Tao J, Chen S, Yang T, Dawson B, Munivez E, Bertin T, Lee B. Osteosclerosis owing to Notch gain of function is solely Rbpj-dependent. J Bone Miner Res 2010; 25:2175-83. [PMID: 20499347 PMCID: PMC3126919 DOI: 10.1002/jbmr.115] [Citation(s) in RCA: 58] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Osteosclerosis is a pathologic bone disease characterized by an increase in bone formation over bone resorption. Genetic factors that contribute to the pathogenesis of this disease are poorly understood. Dysregulation or mutation in many components of the Notch signaling pathway results in a wide range of human developmental disorders and cancers, including bone diseases. Our previous study found that activation of the Notch signaling in osteoblasts promotes cell proliferation and inhibits differentiation, leading to an osteosclerotic phenotype in transgenic mice. In this study we report a longer-lived mouse model that also develops osteosclerosis and a genetic manipulation that completely rescues the phenotype. Conditionally cre-activated expression of Notch1 intracellular domain (NICD) in vivo exclusively in committed osteoblasts caused massive osteosclerosis with growth retardation and abnormal vertebrae. Importantly, selective deletion of a Notch nuclear effector--Rbpj--in osteoblasts completely suppressed the osteosclerotic and growth-retardation phenotypes. Furthermore, cellular and molecular analyses of bones from the rescued mice confirmed that NICD-dependent molecular alterations in osteoblasts were completely reversed by removal of the Rbpj pathway. Together, our observations show that the osteosclerosis owing to activation of Notch signaling in osteoblasts is canonical in nature because it depends solely on Rbpj signaling. As such, it identifies Rbpj as a specific target for manipulating Notch signaling in a cell-autonomous fashion in osteoblasts in bone diseases where Notch may be dysregulated.
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Affiliation(s)
- Jianning Tao
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX 77030, USA
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36
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Mandinic Z, Curcic M, Antonijevic B, Carevic M, Mandic J, Djukic-Cosic D, Lekic CP. Fluoride in drinking water and dental fluorosis. THE SCIENCE OF THE TOTAL ENVIRONMENT 2010; 408:3507-3512. [PMID: 20580811 DOI: 10.1016/j.scitotenv.2010.04.029] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/23/2009] [Revised: 04/08/2010] [Accepted: 04/13/2010] [Indexed: 05/29/2023]
Abstract
In this study we determined the fluoride content in drinking water and hair of 12-year-old schoolchildren from different Serbian municipalities, i.e. Valjevo, Veliko Gradiste, Kacarevo and Vranjska Banja. The analyses were performed using composite fluoride ion-selective electrode. Average fluoride levels were 0.10, 0.15, 0.79 and 11 ppm in well water, 0.07, 0.10, 0.17 and 0.15 ppm in tap water, 19.3, 21.5, 25.4, and 32.5 ppm in hair samples, in Valjevo, Veliko Gradiste, Kacarevo and Vranjska Banja, respectively. Correlation analysis indicated statistically significant positive relationship between fluoride in wells water and fluoride in hair, for all municipalities: correlation coefficients were 0.54 (p < 0.05), 0.89, 0.97 and 0.99 (p < 0.001), in Vranjska Banja, Valjevo, Veliko Gradiste, and Kacarevo, respectively. Positive correlation was obtained also between fluoride in tap water and hair samples in all regions under the study, with statistical significance only in Valjevo municipality, p < 0.05. Dental examination of schoolchildren confirmed dental fluorosis only in the region of Vranjska Banja. Moreover, in endemic fluorotic region of Vranjska Banja, positive and statistically significant correlations were confirmed between fluoride in well water and dental fluorosis level (r = 0.61; p < 0.01) and additionally between fluoride in hair and dental fluorosis level (0.62; p < 0.01). The primary findings from this study have shown that fluoride content in hair is highly correlated with fluoride content in drinking water and dental fluorosis level, indicating that hair may be regarded as biomaterial of high informative potential in evaluating prolonged exposure to fluorides and to individuate children at risk of fluorosis regardless of the phase of teeth eruption.
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Affiliation(s)
- Zoran Mandinic
- Clinic of Paediatric and Preventive Dentistry, School of Dentistry, University of Belgrade, Dr Subotica 11, 11000 Belgrade, Serbia.
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Murutu C, Onyango MS, Ochieng A, Otieno F. Adsorption of Fluoride on Limestone-Derived Apatite. ACTA ACUST UNITED AC 2010. [DOI: 10.4018/jsesd.2010070102] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Fluoride in drinking water above permissible levels is responsible for human dental and skeletal fluorosis. Adsorptive based defluoridation is the most popular technique with several end-user applications. Consequently, this paper describes the fluoride removal potential of a novel sorbent, limestone-derived apatite from drinking water. The adsorbent was prepared by calcining limestone followed by reacting with orthophosphoric acid. Batch sorption studies were performed as a function of contact time, pH, initial fluoride concentration, temperature and adsorbent dose. Sorption of fluoride was found to be pH dependent with a maximum occurring in the pH range of 5-9. The authors also observed that the material had a buffering effect on the same pH range. Meanwhile, the adsorption capacity was found to increase with temperature, depicting the endothermic nature of the adsorption process and decreases with adsorbent mass. The equilibrium data was well described by the conventional Langmuir isotherm, from which isotherm the maximum adsorption capacity was determined as 22.2 mg/g. From the kinetic perspective, the fluoride adsorptive reaction followed the pseudo-second order mechanism.
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Affiliation(s)
| | | | | | - Fred Otieno
- Durban University of Technology, South Africa
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38
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Effect of fluoride on calcium ion concentration and expression of nuclear transcription factor kappa-B ρ65 in rat hippocampus. ACTA ACUST UNITED AC 2010; 63:407-11. [PMID: 20304620 DOI: 10.1016/j.etp.2010.02.017] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2009] [Revised: 02/12/2010] [Accepted: 02/28/2010] [Indexed: 11/20/2022]
Abstract
The study investigated the neurotoxicity of drinking water fluorosis in rat hippocampus. Just weaning male Sprague-Dawley (SD) rats were given 15, 30, 60 mg/L NaF solution and tap water for 9 months. The calcium ion concentration ([Ca(2+)]) in synaptosomes was measured by double wavelength fluorescence spectrophotometer and the expression level of nuclear transcription factor kappa-B ρ65 (NF-κB ρ65) in hippocampal CA3 region was measured by immunohistochemistry. The results showed that [Ca(2+)] significantly increased (F = 33.218, P < 0.01) in moderate fluoride group compared with the control group, and the expression level of NF-κB ρ65 in CA3 region presented an increasing trend as fluoride concentration increased. These results indicate that increase of synaptosomes [Ca(2+)] and NF-κB ρ65 expression level may be the molecular basis of central nervous system damage caused by chronic fluoride intoxication. NF-κB ρ65 in CA3 region is probably a target molecule for fluorosis.
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Banasiak LJ, Schäfer AI. Removal of boron, fluoride and nitrate by electrodialysis in the presence of organic matter. J Memb Sci 2009. [DOI: 10.1016/j.memsci.2009.02.020] [Citation(s) in RCA: 137] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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40
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Onyango MS, Leswifi TY, Ochieng A, Kuchar D, Otieno FO, Matsuda H. Breakthrough Analysis for Water Defluoridation Using Surface-Tailored Zeolite in a Fixed Bed Column. Ind Eng Chem Res 2008. [DOI: 10.1021/ie0715963] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Maurice S. Onyango
- Department of Chemical and Metallurgical Engineering, Tshwane University of Technology, Pretoria 0001, South Africa, School of Chemical and Metallurgical Engineering, University of the Witwatersrand, Johannesburg, South Africa, Department of Chemical Engineering, Nagoya University, Nagoya 464-8603, Japan, and Faculty of Engineering and the Built Environment, Tshwane University of Technology, Pretoria 0001-South Africa
| | - Taile Yvonne Leswifi
- Department of Chemical and Metallurgical Engineering, Tshwane University of Technology, Pretoria 0001, South Africa, School of Chemical and Metallurgical Engineering, University of the Witwatersrand, Johannesburg, South Africa, Department of Chemical Engineering, Nagoya University, Nagoya 464-8603, Japan, and Faculty of Engineering and the Built Environment, Tshwane University of Technology, Pretoria 0001-South Africa
| | - Aoyi Ochieng
- Department of Chemical and Metallurgical Engineering, Tshwane University of Technology, Pretoria 0001, South Africa, School of Chemical and Metallurgical Engineering, University of the Witwatersrand, Johannesburg, South Africa, Department of Chemical Engineering, Nagoya University, Nagoya 464-8603, Japan, and Faculty of Engineering and the Built Environment, Tshwane University of Technology, Pretoria 0001-South Africa
| | - Dalibor Kuchar
- Department of Chemical and Metallurgical Engineering, Tshwane University of Technology, Pretoria 0001, South Africa, School of Chemical and Metallurgical Engineering, University of the Witwatersrand, Johannesburg, South Africa, Department of Chemical Engineering, Nagoya University, Nagoya 464-8603, Japan, and Faculty of Engineering and the Built Environment, Tshwane University of Technology, Pretoria 0001-South Africa
| | - Fred O. Otieno
- Department of Chemical and Metallurgical Engineering, Tshwane University of Technology, Pretoria 0001, South Africa, School of Chemical and Metallurgical Engineering, University of the Witwatersrand, Johannesburg, South Africa, Department of Chemical Engineering, Nagoya University, Nagoya 464-8603, Japan, and Faculty of Engineering and the Built Environment, Tshwane University of Technology, Pretoria 0001-South Africa
| | - Hitoki Matsuda
- Department of Chemical and Metallurgical Engineering, Tshwane University of Technology, Pretoria 0001, South Africa, School of Chemical and Metallurgical Engineering, University of the Witwatersrand, Johannesburg, South Africa, Department of Chemical Engineering, Nagoya University, Nagoya 464-8603, Japan, and Faculty of Engineering and the Built Environment, Tshwane University of Technology, Pretoria 0001-South Africa
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JAIN S, RAVINDRAN V, MATHUR DS. Detection of low bone mass using quantitative ultrasound measurements at calcaneus: comparative study of an Indian rheumatoid arthritis cohort. Int J Rheum Dis 2008. [DOI: 10.1111/j.1756-185x.2008.00400.x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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42
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Simonelli C, Adler RA, Blake GM, Caudill JP, Khan A, Leib E, Maricic M, Prior JC, Eis SR, Rosen C, Kendler DL. Dual-Energy X-Ray Absorptiometry Technical Issues: The 2007 ISCD Official Positions. J Clin Densitom 2008; 11:109-22. [PMID: 18442756 DOI: 10.1016/j.jocd.2007.12.009] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/05/2007] [Accepted: 12/05/2007] [Indexed: 02/06/2023]
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