Abstract
Fluoride concentrations in 42 urinary calculi were determined using a microdiffusion procedure in conjunction with a fluoride sensitive electrode. Mean values of 56, 230 and 1112 ng./mg. fluoride were obtained for uric acid, calcium oxalate monohydrate and apatite/struvite stones, respectively. Fluoride concentration was found to be related to calcium oxalate dihydrate levels as well as to apatite content. It is suggested that the former has zeolithic properties which might trap fluoride while formation and growth of the latter appears to be enhanced by elevated urinary fluoride levels.
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Fluoride in drinking water and human urine in Southern Haryana, India.
The objective of this study was to determine the fluoride content in drinking water and urine samples of adolescent males aged 11–16 years living in Southern Haryana, India. A total of 30 drinking water sources in the studied habitations were assessed for fluoride contamination. Fluoride was estimated in the urine
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Fluoride consumption: the effect of water fluoridation.
Complete fluoride intake data from the 2000-2003 UK National Diet and Nutrition Survey were used to examine questions outstanding from the Fluoridation of Water Supplies review process. In a quarter of the population, fluoride consumption from all sources exceeds the Safe Intake defined by the Committee on the Medical Aspects
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Biochemistry of Fluorosis X - Comparative Study of the Fluoride Levels in Biological Fluids.
The fluoride content of drinking water is directly correlated with the serum and saliva fluoride. Serum fluoride levels are also directly related to those of saliva, but not to urinary fluoride. These interrelations are so close that a mathematical formula can be devised for the calculation of fluoride in body fluids.
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Effects of high fluoride on neonatal neurobehavioral development.
The effects of excessive fluoride intake during pregnancy on neonatal neurobehavioral development and the neurodevelopment toxicity of fluoride were evaluated. Ninety-one normal neonates delivered at the department of obstetrics and gynecology in five hospitals of Zhaozhou County, Heilongjiang Province, China were randomly selected from December 2002 to January 2003. The subjects were divided into two groups (high
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Fluoride exposure and thyroid hormone levels in pregnancy: The MIREC cohort.
Highlights Fluoride may disrupt thyroid function in pregnant women. Fluoride exposure was associated with alterations in maternal thyroid hormone levels. Urinary fluoride was associated with significantly higher TSH among those pregnant with females. Adjustment for maternal iodine status did not change the results. Background Fluoride exposure may increase the risk of hypothyroidism,
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