1
|
Zhang G, Zhang M, Feng Q, Wang R, Mei H, Xing K, Li J. Supramolecular Composite Hydrogel Loaded with CaF 2 Nanoparticles Promotes the Recovery of Periodontitis Bone Resorption. ACS APPLIED MATERIALS & INTERFACES 2024. [PMID: 39183483 DOI: 10.1021/acsami.4c07210] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/27/2024]
Abstract
Treatments to reduce periodontal inflammation and rescue periodontitis bone resorption have been of interest to researchers. Bone tissue engineering materials have been gradually used in the treatment of bone defects, but periodontal bone tissue regeneration still faces challenges. Considering the biocompatibility factor, constructing bionic scaffolds with natural extracellular matrix properties is an ideal therapeutic pathway. Based on the pathological mechanism of periodontitis, in this study, short peptide and nanometer inorganic particles were comingled to construct NapKFF-nano CaF2 supramolecular composite hydrogels with different ratios. Material characterization experiments confirmed that the composite hydrogel had suitable mechanical properties and a three-dimensional structure that can function in the resorption region of the alveolar bone and provide spaces for cell proliferation and adhesion. The release of low concentrations of fluoride and calcium ions has been shown to have positive biological effects in both in vivo and in vitro experiments. Vitro experiments confirmed that the composite hydrogel had good biocompatibility and promoted osteogenic differentiation of bone marrow mesenchymal stem cells (BMSCs). Microbiological experiments confirmed that the composite hydrogel inhibited the activity of periodontal pathogenic bacteria. In animal studies, composite hydrogel applied to periodontitis rats in vivo can effectively repair alveolar bone resorption. This composite hydrogel has a simple preparation method and is inexpensive to produce, yet it has antibacterial and osteogenesis-promoting incremental effects, which makes it well suited for the treatment of periodontitis bone resorption, providing a new strategy for periodontal bone tissue engineering.
Collapse
Affiliation(s)
- Guanning Zhang
- State Key Laboratory of Oral Diseases & National Center for Stomatology & National Clinical Research Center for Oral Diseases, Department of Orthodontics, West China Hospital of Stomatology, Sichuan University, No. 14, Third Section, Renmin South Rd, Chengdu 610041, Sichuan, China
| | - Mei Zhang
- State Key Laboratory of Oral Diseases & National Center for Stomatology & National Clinical Research Center for Oral Diseases, Department of Orthodontics, West China Hospital of Stomatology, Sichuan University, No. 14, Third Section, Renmin South Rd, Chengdu 610041, Sichuan, China
| | - Qingchen Feng
- State Key Laboratory of Oral Diseases & National Center for Stomatology & National Clinical Research Center for Oral Diseases, Department of Orthodontics, West China Hospital of Stomatology, Sichuan University, No. 14, Third Section, Renmin South Rd, Chengdu 610041, Sichuan, China
| | - Ruohan Wang
- National Engineering Research Center for Biomaterials, College of Biomedical Engineering, Sichuan University, Chengdu 610064, Sichuan, China
| | - Hongxiang Mei
- State Key Laboratory of Oral Diseases & National Center for Stomatology & National Clinical Research Center for Oral Diseases, Department of Orthodontics, West China Hospital of Stomatology, Sichuan University, No. 14, Third Section, Renmin South Rd, Chengdu 610041, Sichuan, China
| | - Ke Xing
- State Key Laboratory of Oral Diseases & National Center for Stomatology & National Clinical Research Center for Oral Diseases, Department of Orthodontics, West China Hospital of Stomatology, Sichuan University, No. 14, Third Section, Renmin South Rd, Chengdu 610041, Sichuan, China
| | - Juan Li
- State Key Laboratory of Oral Diseases & National Center for Stomatology & National Clinical Research Center for Oral Diseases, Department of Orthodontics, West China Hospital of Stomatology, Sichuan University, No. 14, Third Section, Renmin South Rd, Chengdu 610041, Sichuan, China
| |
Collapse
|
2
|
Kato N, Nakai K, Tanaka H, Fukuzawa K, Hayashi M, Aoki M, Kawato T. The Role of Sodium Fluoride Mouthwash in Regulating FGF-2 and TGF-β Expression in Human Gingival Fibroblasts. Biomedicines 2024; 12:1727. [PMID: 39200192 PMCID: PMC11351898 DOI: 10.3390/biomedicines12081727] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2024] [Revised: 07/27/2024] [Accepted: 07/30/2024] [Indexed: 09/02/2024] Open
Abstract
Sodium fluoride (NaF) is a fluoride application recommended by the World Health Organization for its efficacy and safety in preventing dental caries. Gingival fibroblasts that constitute the majority of connective tissue cells play a major role in wound healing via the expression of growth factors, including fibroblast growth factor-2 (FGF-2) and transforming growth factor-beta (TGF-β). This study examined the effect of NaF mouthwash on FGF-2 and TGF-β expression in human gingival fibroblasts (HGnFs). Fibroblasts were exposed to a medium with 225 ppmF NaF for 1 min, then switched to either 15 ppmF NaF for continuous stimulation or no NaF for transient stimulation. Continuous NaF stimulation significantly increased the gene and protein expression of FGF-2 and TGF-β in HGnFs compared to controls, suggesting NaF's potential role in modulating periodontal tissue wound healing. Signaling pathway investigations showed the involvement of heterotrimeric GTP-binding proteins, calcium/calmodulin-dependent kinase II (CaMKII), and extracellular signal-regulated kinase (ERK) phosphorylation. Inhibiting CaMKII reduced NaF-induced FGF-2 and TGF-β expression, while ERK phosphorylation increased after NaF stimulation. These results highlight NaF mouthwash's potential in promoting wound healing in extraction sockets, particularly during the mixed dentition period. Understanding NaF's effects is clinically relevant due to the common use of fluoride products.
Collapse
Affiliation(s)
- Nobue Kato
- Department of Oral Health Sciences, Nihon University School of Dentistry, Tokyo 1018310, Japan; (N.K.); (H.T.); (K.F.); (M.H.); (M.A.); (T.K.)
- Division of Functional Morphology, Dental Research Center, Nihon University School of Dentistry, Tokyo 1018310, Japan
| | - Kumiko Nakai
- Department of Oral Health Sciences, Nihon University School of Dentistry, Tokyo 1018310, Japan; (N.K.); (H.T.); (K.F.); (M.H.); (M.A.); (T.K.)
- Division of Functional Morphology, Dental Research Center, Nihon University School of Dentistry, Tokyo 1018310, Japan
| | - Hideki Tanaka
- Department of Oral Health Sciences, Nihon University School of Dentistry, Tokyo 1018310, Japan; (N.K.); (H.T.); (K.F.); (M.H.); (M.A.); (T.K.)
- Division of Functional Morphology, Dental Research Center, Nihon University School of Dentistry, Tokyo 1018310, Japan
| | - Kyoko Fukuzawa
- Department of Oral Health Sciences, Nihon University School of Dentistry, Tokyo 1018310, Japan; (N.K.); (H.T.); (K.F.); (M.H.); (M.A.); (T.K.)
- Division of Functional Morphology, Dental Research Center, Nihon University School of Dentistry, Tokyo 1018310, Japan
| | - Minii Hayashi
- Department of Oral Health Sciences, Nihon University School of Dentistry, Tokyo 1018310, Japan; (N.K.); (H.T.); (K.F.); (M.H.); (M.A.); (T.K.)
- Division of Functional Morphology, Dental Research Center, Nihon University School of Dentistry, Tokyo 1018310, Japan
| | - Mikio Aoki
- Department of Oral Health Sciences, Nihon University School of Dentistry, Tokyo 1018310, Japan; (N.K.); (H.T.); (K.F.); (M.H.); (M.A.); (T.K.)
- Division of Functional Morphology, Dental Research Center, Nihon University School of Dentistry, Tokyo 1018310, Japan
| | - Takayuki Kawato
- Department of Oral Health Sciences, Nihon University School of Dentistry, Tokyo 1018310, Japan; (N.K.); (H.T.); (K.F.); (M.H.); (M.A.); (T.K.)
- Division of Functional Morphology, Dental Research Center, Nihon University School of Dentistry, Tokyo 1018310, Japan
| |
Collapse
|
3
|
Yang S, Yu S, Du Y, Feng Z, Jiao X, Li Q, Wu J, Sun L, Zuo J, Fu X, Li Z, Huang H, Zhou G, Yu F, Ba Y. Correlations between bone metabolism biomarkers and fluoride exposure in adults and children. J Trace Elem Med Biol 2024; 84:127419. [PMID: 38461620 DOI: 10.1016/j.jtemb.2024.127419] [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: 10/25/2023] [Revised: 02/14/2024] [Accepted: 02/24/2024] [Indexed: 03/12/2024]
Abstract
Increased exposure to fluoride, which notably affects bone metabolism, is a global concern. However, the correlations and sensitivity of bone metabolism to fluoride remain controversial. In this cross-sectional study, 549 children (aged 7-12 years) and 504 adults (≥ 18 years old) were recruited in the high-fluoride areas of the Henan Province. Urinary fluoride (UF) level was determined using a fluoride electrode. Fasting venous blood serum was collected to measure bone metabolism biomarkers. The selected bone metabolism biomarkers for children included bone alkaline phosphatase (BALP), serum alkaline phosphatase (ALP), osteocalcin (OCN), calcitonin (CT), parathyroid hormone (PTH), phosphorus (P5+), and calcium (Ca2+). For adults, the biomarkers included ALP, CT, PTH, β-CrossLaps (β-CTX), P5+, and Ca2+. The correlations between UF and bone metabolism biomarkers were analyzed using binary logistic regression, a trend test, a generalized additive model, and threshold effect analysis. Regression analysis indicated a significant correlation between serum OCN, PTH, and UF levels in children aged 7-9 years. Serum OCN, PTH, and BALP contents were significantly correlated with UF in boys (P < 0.05). Furthermore, the interaction between age and UF affected serum P5+ and PTH (P < 0.05). The generalized additive model revealed nonlinear dose-response relationships between P5+, BALP, and UF contents in children (P < 0.05). Serum OCN level was linearly correlated with the UF concentration (P < 0.05). Similarly, a significant correlation was observed between β-CTX and UF levels in adults. In addition, significant correlations were observed between UF-age and serum Ca2+, β-CTX, and PTH contents. There was a non-linear correlation between serum Ca2+, P5+, and β- CTX and UF levels (P < 0.05). Overall, serum OCN, BALP, and P5+ levels can serve as sensitive bone metabolism biomarkers in children, while β-CTX, P5+, and Ca2+ can be considered fluoride-sensitive bone metabolism biomarkers in adults.
Collapse
Affiliation(s)
- Shuo Yang
- Department of Environmental Health, School of Public Health, Zhengzhou University, 100 Kexue Avenue, Zhengzhou, Henan 450001, China
| | - Shuiyuan Yu
- Department of Environmental Health, School of Public Health, Zhengzhou University, 100 Kexue Avenue, Zhengzhou, Henan 450001, China
| | - Yuhui Du
- Department of Environmental Health, School of Public Health, Zhengzhou University, 100 Kexue Avenue, Zhengzhou, Henan 450001, China
| | - Zichen Feng
- Department of Environmental Health, School of Public Health, Zhengzhou University, 100 Kexue Avenue, Zhengzhou, Henan 450001, China
| | - Xuecheng Jiao
- Department of Endemic Disease, Puyang Center for Disease Control and Prevention, Puyang, Henan 457000, China
| | - Qinyang Li
- Department of Environmental Health, School of Public Health, Zhengzhou University, 100 Kexue Avenue, Zhengzhou, Henan 450001, China
| | - Jingjing Wu
- Department of Environmental Health, School of Public Health, Zhengzhou University, 100 Kexue Avenue, Zhengzhou, Henan 450001, China
| | - Lei Sun
- Department of Environmental Health, School of Public Health, Zhengzhou University, 100 Kexue Avenue, Zhengzhou, Henan 450001, China
| | - Juan Zuo
- Department of Environmental Health, School of Public Health, Zhengzhou University, 100 Kexue Avenue, Zhengzhou, Henan 450001, China
| | - Xiaoli Fu
- Department of Environmental Health, School of Public Health, Zhengzhou University, 100 Kexue Avenue, Zhengzhou, Henan 450001, China
| | - Zhiyuan Li
- Department of Environmental Health, School of Public Health, Zhengzhou University, 100 Kexue Avenue, Zhengzhou, Henan 450001, China
| | - Hui Huang
- Department of Environmental Health, School of Public Health, Zhengzhou University, 100 Kexue Avenue, Zhengzhou, Henan 450001, China
| | - Guoyu Zhou
- Department of Environmental Health, School of Public Health, Zhengzhou University, 100 Kexue Avenue, Zhengzhou, Henan 450001, China
| | - Fangfang Yu
- Department of Environmental Health, School of Public Health, Zhengzhou University, 100 Kexue Avenue, Zhengzhou, Henan 450001, China.
| | - Yue Ba
- Department of Environmental Health, School of Public Health, Zhengzhou University, 100 Kexue Avenue, Zhengzhou, Henan 450001, China.
| |
Collapse
|
4
|
Breban-Schwarzkopf D, Chioibas R, Macasoi I, Bolintineanu S, Marcovici I, Draghici G, Dinu S, Buzatu R, Dehelean C, Szuhanek C. Comprehensive in vitro and in ovo assessment of cytotoxicity: Unraveling the impact of sodium fluoride, xylitol, and their synergistic associations in dental products. BIOMOLECULES & BIOMEDICINE 2024; 24:923-938. [PMID: 38431834 PMCID: PMC11293222 DOI: 10.17305/bb.2024.10181] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/16/2023] [Revised: 02/15/2024] [Accepted: 03/02/2024] [Indexed: 03/05/2024]
Abstract
Over the past several decades, dental health products containing fluoride have been widely employed to mitigate tooth decay and promote oral hygiene. However, concerns regarding the potential toxicological repercussions of fluoride exposure have incited continuous scientific inquiry. The current study investigated the cytotoxicity of sodium fluoride (NaF) and xylitol (Xyl), both individually and in combination, utilizing human keratinocyte (HaCaT) and osteosarcoma (SAOS-2) cell lines. In HaCaT cells, NaF decreased proliferation in a concentration-dependent manner and induced apoptosis-related morphological changes at low concentrations, whereas Xyl exhibited dose-dependent cytotoxic effects. The combination of NaF and Xyl reduced cell viability, particularly at higher concentrations, accompanied by apoptosis-like morphological alterations. Sub-cytotoxic NaF concentrations (0.2%) significantly affected caspase activity and the expression of pro-apoptotic genes. Conversely, Xyl demonstrated no discernible effect on these biological parameters. In SAOS-2 cells, NaF increased proliferation at high concentrations, contrasting with Xyl's concentration-dependent cytotoxic effects. The combination of NaF and Xyl had a minimal impact on cell viability. Sub-cytotoxic NaF concentrations did not influence caspase activity or gene expression, while Xyl induced dose-dependent morphological alterations, increased caspase activity, and upregulated pro-apoptotic gene expression. In ovo experiments on the chorioallantoic membrane (CAM) revealed that only NaF induced irritant effects, suggesting potential vascular adverse outcomes. This study advocates for the combined use of NaF and Xyl, highlighting their cytotoxicity benefits in healthy cells while maintaining safety considerations for tumor cells.
Collapse
Affiliation(s)
- Daniel Breban-Schwarzkopf
- Faculty of Medicine, “Victor Babes” University of Medicine and Pharmacy Timisoara, Timisoara, Romania
| | - Raul Chioibas
- Faculty of Medicine, “Victor Babes” University of Medicine and Pharmacy Timisoara, Timisoara, Romania
| | - Ioana Macasoi
- Faculty of Pharmacy, “Victor Babes” University of Medicine and Pharmacy Timisoara, Timisoara, Romania
- Research Center for Pharmaco-Toxicological Evaluations, Faculty of Pharmacy, “Victor Babes” University of Medicine and Pharmacy Timisoara, Timisoara, Romania
| | - Sorin Bolintineanu
- Faculty of Medicine, “Victor Babes” University of Medicine and Pharmacy Timisoara, Timisoara, Romania
| | - Iasmina Marcovici
- Faculty of Pharmacy, “Victor Babes” University of Medicine and Pharmacy Timisoara, Timisoara, Romania
- Research Center for Pharmaco-Toxicological Evaluations, Faculty of Pharmacy, “Victor Babes” University of Medicine and Pharmacy Timisoara, Timisoara, Romania
| | - George Draghici
- Faculty of Pharmacy, “Victor Babes” University of Medicine and Pharmacy Timisoara, Timisoara, Romania
- Research Center for Pharmaco-Toxicological Evaluations, Faculty of Pharmacy, “Victor Babes” University of Medicine and Pharmacy Timisoara, Timisoara, Romania
| | - Stefania Dinu
- Faculty of Dental Medicine, “Victor Babes” University of Medicine and Pharmacy Timisoara, Timisoara, Romania
- Pediatric Dentistry Research Center, Faculty of Dental Medicine, “Victor Babes” University of Medicine and Pharmacy Timisoara, Timisoara, Romania
| | - Roxana Buzatu
- Faculty of Dental Medicine, “Victor Babes” University of Medicine and Pharmacy Timisoara, Timisoara, Romania
| | - Cristina Dehelean
- Faculty of Pharmacy, “Victor Babes” University of Medicine and Pharmacy Timisoara, Timisoara, Romania
- Research Center for Pharmaco-Toxicological Evaluations, Faculty of Pharmacy, “Victor Babes” University of Medicine and Pharmacy Timisoara, Timisoara, Romania
| | - Camelia Szuhanek
- Faculty of Dental Medicine, “Victor Babes” University of Medicine and Pharmacy Timisoara, Timisoara, Romania
- Orthodontic Research Center (ORTHO-CENTER), “Victor Babes” University of Medicine and Pharmacy Timisoara, Timisoara, Romania
| |
Collapse
|
5
|
Muthu Prabhu S, Yusuf M, Ahn Y, Park HB, Choi J, Amin MA, Yadav KK, Jeon BH. Fluoride occurrence in environment, regulations, and remediation methods for soil: A comprehensive review. CHEMOSPHERE 2023; 324:138334. [PMID: 36893864 DOI: 10.1016/j.chemosphere.2023.138334] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/19/2023] [Revised: 03/04/2023] [Accepted: 03/06/2023] [Indexed: 06/18/2023]
Abstract
Fluoride, a naturally occurring chemical element, is largely insoluble in soils. More than 90% of the fluoride in soil is bound to soil particles and is unable to be dissolved. As part of the soil, fluoride is predominantly located in the colloid or clay fraction of the soil, and the movement of fluoride is strongly affected by the sorption capacity of the soil, which is affected by pH, the type of soil sorbent present, and the salinity. The Canadian Council of Ministers of the Environment soil quality guideline for fluoride in soils under a residential/parkland land use scenario is 400 mg/kg. In this review, we focus on fluoride contamination in soil and subsurface environments, and the various sources of fluorides are discussed in detail. The average fluoride concentration in soil in different countries and their regulations for soil and water are comprehensively reviewed. In this article, the latest advances in defluoridation methods are highlighted and the importance of further research addressing efficient and cost-effective methods to remediate fluoride contamination in soil is critically discussed. Methods used to mitigate fluoride risks by removing fluoride from the soil are presented. We strongly recommend that regulators and soil chemists in all countries explore opportunities to improve defluoridation methods and consider adopting more stringent regulations for fluoride in soil depending on geologic conditions.
Collapse
Affiliation(s)
- Subbaiah Muthu Prabhu
- Department of Earth Resources and Environmental Engineering, Hanyang University, Seoul, 04763, Republic of Korea; Department of Chemistry, School of Advanced Sciences, VIT-AP University, Vijayawada, 522 237, Andhra Pradesh, India
| | - Mohammed Yusuf
- Department of Earth Resources and Environmental Engineering, Hanyang University, Seoul, 04763, Republic of Korea
| | - Yongtae Ahn
- Department of Earth Resources and Environmental Engineering, Hanyang University, Seoul, 04763, Republic of Korea.
| | - Ho Bum Park
- Department of Energy Engineering, Hanyang University, Seoul, 04763, Republic of Korea
| | - Jaeyoung Choi
- Center for Environment, Health and Welfare Research, Korea Institute of Science and Technology, Hwarang-ro 14, Seongbuk-gu, Seoul, 02792, Republic of Korea
| | - Mohammed A Amin
- Department of Chemistry, College of Science, Taif University, P.O. Box 11099, Taif, 21944, Saudi Arabia
| | - Krishna Kumar Yadav
- Faculty of Science and Technology, Madhyanchal Professional University, Tatibad, Bhopal, 462044, India
| | - Byong-Hun Jeon
- Department of Earth Resources and Environmental Engineering, Hanyang University, Seoul, 04763, Republic of Korea.
| |
Collapse
|
6
|
Chen L, Jia P, Liu Y, Wang R, Yin Z, Hu D, Ning H, Ge Y. Fluoride exposure disrupts the cytoskeletal arrangement and ATP synthesis of HT-22 cell by activating the RhoA/ROCK signaling pathway. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2023; 254:114718. [PMID: 36950989 DOI: 10.1016/j.ecoenv.2023.114718] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/29/2022] [Revised: 02/25/2023] [Accepted: 02/28/2023] [Indexed: 06/18/2023]
Abstract
BACKGROUND Fluoride, an environmental contaminant, is ubiquitously present in air, water, and soil. It usually enters the body through drinking water and may cause structural and functional disorders in the central nervous system in humans and animals. Fluoride exposure affects cytoskeleton and neural function, but the mechanism is not clear. METHODS The specific neurotoxic mechanism of fluoride was explored in HT-22 cells. Cellular proliferation and toxicity detection were investigated by CCK-8, CCK-F, and cytotoxicity detection kits. The development morphology of HT-22 cells was observed under a light microscope. Cell membrane permeability and neurotransmitter content were determined using lactate dehydrogenase (LDH) and glutamate content determination kits, respectively. The ultrastructural changes were detected by transmission electron microscopy, and actin homeostasis was observed by laser confocal microscopy. ATP enzyme and ATP activity were determined using the ATP content kit and ultramicro-total ATP enzyme content kit, respectively. The expression levels of GLUT1 and 3 were assessed by Western Blot assays and qRT-PCR. RESULTS Our results showed that fluoride reduced the proliferation and survival rates of HT-22 cells. Cytomorphology showed that dendritic spines became shorter, cellular bodies became rounder, and adhesion decreased gradually after fluoride exposure. LDH results showed that fluoride exposure increased the membrane permeability of HT-22 cells. Transmission electron microscopy results showed that fluoride caused cells to swell, microvilli content decreased, cellular membrane integrity was damaged, chromatin was sparse, mitochondria ridge gap became wide, and microfilament and microtubule density decreased. Western Blot and qRT-PCR analyses showed that RhoA/ROCK/LIMK/Cofilin signaling pathway was activated by fluoride. F-actin/G-actin fluorescence intensity ratio remarkably increased in 0.125 and 0.5 mM NaF, and the mRNA expression of MAP2 was significantly decreased. Further studies showed that GLUT3 significantly increased in all fluoride groups, while GLUT1 decreased (p < 0.05). ATP contents remarkably increased, and ATP enzyme activity substantially decreased after NaF treatment with the control. CONCLUSION Fluoride activates the RhoA/ROCK/LIMK/Cofilin signaling pathway, impairs the ultrastructure, and depresses the connection of synapses in HT-22 cells. Moreover, fluoride exposure affects the expression of glucose transporters (GLUT1 and 3) and ATP synthesis. Sum up fluoride exposure disrupts actin homeostasis, ultimately affecting structure, and function in HT-22 cells. These findings support our previous hypothesis and provide a new perspective on the neurotoxic mechanism of fluorosis.
Collapse
Affiliation(s)
- Lingli Chen
- College of Animal Science and Veterinary Medicine, Henan Institute of Science and Technology, Xinxiang, Henan Provence 453003, China; Postdoctoral Research and Development Base, Henan Institute of Science and Technology, Xinxiang, Henan Provence 453003, China
| | - Penghuan Jia
- College of Animal Science and Veterinary Medicine, Henan Institute of Science and Technology, Xinxiang, Henan Provence 453003, China
| | - Yuye Liu
- College of Animal Science and Veterinary Medicine, Henan Institute of Science and Technology, Xinxiang, Henan Provence 453003, China
| | - Rui Wang
- College of Animal Science and Veterinary Medicine, Henan Institute of Science and Technology, Xinxiang, Henan Provence 453003, China
| | - Zhihong Yin
- College of Animal Science and Veterinary Medicine, Henan Institute of Science and Technology, Xinxiang, Henan Provence 453003, China
| | - Dongfang Hu
- College of Animal Science and Veterinary Medicine, Henan Institute of Science and Technology, Xinxiang, Henan Provence 453003, China
| | - Hongmei Ning
- College of Animal Science and Veterinary Medicine, Henan Institute of Science and Technology, Xinxiang, Henan Provence 453003, China
| | - Yaming Ge
- College of Animal Science and Veterinary Medicine, Henan Institute of Science and Technology, Xinxiang, Henan Provence 453003, China.
| |
Collapse
|
7
|
Balasubramanian S, Perumal E. A systematic review on fluoride-induced epigenetic toxicity in mammals. Crit Rev Toxicol 2022; 52:449-468. [PMID: 36422650 DOI: 10.1080/10408444.2022.2122771] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
Fluoride, one of the global groundwater contaminants, is ubiquitous in our day-to-day life from various natural and anthropogenic sources. Numerous in vitro, in vivo, and epidemiological studies are conducted to understand the effect of fluoride on biological systems. A low concentration of fluoride is reported to increase oral health, whereas chronic exposure to higher concentrations causes fluoride toxicity (fluorosis). It includes dental fluorosis, skeletal fluorosis, and fluoride toxicity in soft tissues. The mechanism of fluoride toxicity has been reviewed extensively. However, epigenetic regulation in fluoride toxicity has not been reviewed. This systematic review summarizes the current knowledge regarding fluoride-induced epigenetic toxicity in the in vitro, in vivo, and epidemiological studies in mammalian systems. We examined four databases for the association between epigenetics and fluoride exposure. Out of 932 articles (as of 31 March 2022), 39 met our inclusion criteria. Most of the studies focused on different genes, and overall, preliminary evidence for epigenetic regulation of fluoride toxicity was identified. We further highlight the need for epigenome studies rather than candidate genes and provide recommendations for future research. Our results indicate a correlation between fluoride exposure and epigenetic processes. Further studies are warranted to elucidate and confirm the mechanism of epigenetic alterations mediated fluoride toxicity.
Collapse
Affiliation(s)
| | - Ekambaram Perumal
- Molecular Toxicology Laboratory, Department of Biotechnology, Bharathiar University, Coimbatore, India
| |
Collapse
|
8
|
Effects of carboxymethyl chitosan adsorption on bioactive components of Antarctic krill oil. Food Chem 2022; 388:132995. [PMID: 35453014 DOI: 10.1016/j.foodchem.2022.132995] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2021] [Revised: 03/22/2022] [Accepted: 04/14/2022] [Indexed: 01/03/2023]
Abstract
High acid value (AV) and fluorine content of Antarctic krill oil (AKO) extracted from frozen krill by ethanol limit its product development. In this study, a method was proposed to reduce the AV and fluorine content of AKO by carboxymethyl chitosan (CMCS) adsorption. The optimal adsorption condition was 12.5% (w/v) of CMCS at 30℃ for 15 min. At this condition, AV and fluorine content decreased by 78.0% and 61.4%, respectively. It is interesting that CMCS adsorption showed specificity to particular substances. Although free fatty acids content showed a significant reduction, free EPA and DHA, phospholipid and astaxanthin remained almost constant. Moreover, CMCS adsorption showed no influence on neuroprotective activity of AKO against H2O2-induced neuro-damage of PC12 cells. The reclaimed CMCS showed an undiminished antimicrobial activity against both Gram-positive and Gram-negative bacteria. The CMCS adsorption shows a potential development for refining AKO and other oils in food industry.
Collapse
|