Abstract
Fluorine, a toxic and reactive element, is widely prevalent throughout the environment and can induce toxicity when absorbed into the body. This study was to explore the possible mechanisms of developmental neurotoxicity in rats treated with different levels of sodium fluoride (NaF). The rats’ intelligence, as well as changes in neuronal morphology, glucose absorption, and functional gene expression within the brain were determined using the Morris water maze test, transmission electron microscopy, small-animal magnetic resonance imaging and Positron emission tomography and computed tomography, and Western blotting techniques. We found that NaF treatment-impaired learning and memory in these rats. Furthermore, NaF caused neuronal degeneration, decreased brain glucose utilization, decreased the protein expression of glucose transporter 1 and glial fibrillary acidic protein, and increased levels of brain-derived neurotrophic factor in the rat brains. The developmental neurotoxicity of fluoride may be closely associated with low glucose utilization and neurodegenerative changes.
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Effects of high fluoride drinking water on the cerebral functions of mice.
Objective: To study the effects after six months of exposure of mice to increasing concentrations of fluoride in drinking water (tap water, 10, 50, and 100 mg F/L) on their cerebral functions. Methods: Learning and memory abilities of high-fluoride exposed and control groups of mice were measured by a behavior-toxicological test
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Proteomic analysis of hippocampus in offspring male mice exposed to fluoride and lead
Fluoride and lead are two common pollutants in the environment. Previous investigations have found that high fluoride exposure can increase the lead burden. In this experiment, in order to study on the molecular mechanisms of central neural system injury induced by the above two elements, differently expressed protein spots in
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Effects of fluoride exposure on performance in water labyrinth and monoamine neurotransmitters of rats
Objective To study the effects of fluoride exposure on performance in water labyrinth and monoamine neurotransmitters of rats. Methods Forty SD rats were divided randomly into 4 groups:control group,high-fluoride exposed group,medium-fluoride exposed group and low fluoride exposed group.These 4 groups of rats were exposed to different concentrations (0,5,10,20 mg/kg) of sodium
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Experimental pharmacological researches regarding the influence of sodium fluoride in allopathic and homeopathic doses in central nervous system's performances. A correlation between behavioral response in classic maze test and morphological aspects of cerebral cortex
The influence of fluorine administration on central nervous system’s (CNS) performances in female mice treated during gestation with two distinct doses of sodium fluoride (NaF): 0.25 mg and 0.50 mg. The research extended also to offspring (generation 1 – F1), treated with NaF in allopathic (0.25 and 0.50 mg), homeopathic
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Integrated transcriptomic and proteomic analysis indicated that neurotoxicity of rats with chronic fluorosis may be in mechanism involved in the changed cholinergic pathway and oxidative stress.
Highlights Chronic fluorosis decreased learning and memory of rats and induced neurotoxicity. Thirteen corresponding DEGs and DAPs (cor-DEGs-DAPs) were identified. Most of cor-DEGs-DAPs were related to neurodegenerative changes and oxidative stress response The neurotoxicity by high fluoride involved in the changes in cholinergic pathway and oxidative stress. Background To reveal the
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Fluoride & IQ: 71 Studies
As of November 2021, a total of 79 studies have investigated the relationship between fluoride and human intelligence. Of these investigations, 71 studies have found that elevated fluoride exposure is associated with reduced IQ in humans, while over 60 animal studies have found that fluoride exposure impairs the learning and/or
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Fluoride's Direct Effects on Brain: Animal Studies
The possibility that fluoride ingestion may impair intelligence and other indices of neurological function is supported by a vast body of animal research, including over 40 studies that have investigated fluoride's effects on brain quality in animals. As discussed by the National Research Council, the studies have consistently demonstrated that fluoride, at widely varying concentrations, is toxic to the brain.
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Fluoride's Effect on Fetal Brain
The human placenta does not prevent the passage of fluoride from a pregnant mother's bloodstream to the fetus. As a result, a fetus can be harmed by fluoride ingested pregnancy. Based on research from China, the fetal brain is one of the organs susceptible to fluoride poisoning. As highlighted by the excerpts
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Fluoride: Developmental Neurotoxicity.
Developmental Neurotoxicity There has been a tremendous amount of research done on the association of exposure to fluoride with developmental neurotoxicity. There are over 60 studies reporting reduced IQ in children and several on the impaired learning/memory in animals. And there are studies which link fluoride to Attention Deficit Hyperactivity Disorder. Teaching
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NRC (2006): Fluoride's Neurotoxicity and Neurobehavioral Effects
The NRC's analysis on fluoride and the brain.
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