Abstract
The relation between fluoride level in drinking water and the incidence of congenital heart disease in Iowa was studied by means of a hybrid case-control design. Controls (n = 2,172) were randomly selected from the birth tapes of the State of Iowa between January 1, 1983 and December 31, 1987, and frequency matched by time of conception with cases of intracardiac blood flow defect (n = 543) ascertained through the Birth Defects Registry of lowa. Potential confounding factors included levels of nitrate in drinking water, chlorination status and source of drinking water, demographic characteristics of parents, gestational age, and birth weight of infants. Logistic regression analysis yielded an adjusted odds ratio of 1.58 (95% confidence-interval (CI) 1.10-2.26) for fluoride exposure. With further adjustment for the percentage of farming population in the maternal county of residence, a variable highly correlated with fluoride exposure, the adjusted odds ratio was 1.15 (95% CI 0.79-1.77). These results suggest that further studies are warranted to evaluate the effects of farming and fluoride in drinking water on the occurrence of intracardiac blood flow defects.
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Ca2+ metabolic disorder and abnormal expression of cardiac troponin involved in fluoride-induced cardiomyocyte damage.
Highlights F induced cardiomyocyte damage. F induced Ca2+ metabolic disorder. F inhibited the expression of cardiac troponin. F induced ultrastructure damage in cardiomyocytes. F interfered with production of ATP in cardiomyocytes. Our previous study indicated that excessive fluoride (F) induces ATP5J and ATP5H proactive expression by interfering cardiomyocyte mitochondrial dysfunction in
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Stimulation of cAMP accumulation in rat aorta and diaphragm by fluorine containing compounds
Evidence is presented that accumulation of cAMP in isolated rat thoracic aorta and diaphragm is stimulated by several fluorine containing compounds (NaF, Na2PO3F (MFP) and SnF2). Time course experiments with NaF showed that maximal stimulation of cAMP accumulation was observed within 2.5 min. NaF and MFP produced significant increases in
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The pathogenesis of endemic fluorosis: Research progress in the last 5 years.
Fluorine is one of the trace elements necessary for health. It has many physiological functions, and participates in normal metabolism. However, fluorine has paradoxical effects on the body. Many studies have shown that tissues and organs of humans and animals appear to suffer different degrees of damage after long-term direct
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Heart deaths and fluoridation
In the city of Antigo, Wisconsin, fluoridation of the public water supplies was initiated in 1949. ·It was discontinued in November 1960, and reinstituted in October 1965, A striking increase in the rate of deaths from heart disease occurred. in Antigo hnmediately following the introduction of fluoridation in 1949 and
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Association of Hypertension, Body Mass Index, and Waist Circumference with Fluoride Intake; Water Drinking in Residents of Fluoride Endemic Areas, Iran.
Hypertension is becoming a global epidemic for both rural and urban populations; it is a major public health challenge in Iran. Fluoride can be a risk factor for hypertension. Cross-sectional analysis was conducted in two study areas to assess the relation of fluoride with blood pressure prevalence, BMI, waist circumference,
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Fluoride & Electrocardiogram Abnormalities
An electrocardiogram (ECG) is a diagnostic test that measures the electrical activity of the heart. An ECG can reveal heart rate, heart rhythym (i.e. steady or irregular), and the strength and timing of the heart’s natural electrical signals. ECGs are described in terms of “waves” (e.g. amplitude and duration). Problems
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Fluoride & Myocardial Damage
Structural damage to the heart resulting from fluoride toxicity has been observed in numerous human and animal studies. The general features of this damage include cloudy swelling, vacuolization or vacuolar degeneration, hemorrhages, interstitial edema, fibrous necrosis, dissolution of nuclei, and thickening of the vessel walls in the heart muscle (Basha
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Fluoride & Arteriosclerosis
Healthy arteries are flexible and elastic, allowing efficient transfer of blood and nutrients from the heart to the rest of the body. Arteriosclerosis refers to a stiffening of the arteries, including loss of elasticity. This is a slow, progressive disease that may begin early in life from damage to the
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Fluoride, Blood Pressure and Hypertension
Individuals with blood pressure readings that exceed 140/90 are considered hypertensive. Hypertension can increase the risk of stroke, heart attack, heart failure, aortic aneurysms, and peripheral arterial disease. An association between increased fluoride in ground water and increased prevalence of hypertension has been observed, especially among adult males (Amini et
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Fluoride & Arterial Calcification
The major change involved with cardiovascular disease is development of atherosclerosis in critical arteries, which is partially characterized by vascular calcification. The level of coronary artery calcification is thought to be the most important indicator of future cardiovascular events. Increased arterial calcifications have frequently been reported in those with skeletal fluorosis
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