Abstract

In planning health protection for pregnant as well as nonpregnant women exposed to fluorides, information about their fluoride metabolism is essential. The authors determined fluoride balances in small groups of young women maintained on two different low-fluoride diets for one or two 21-day periods in a metabolic unit. One diet contained an average of 0.41 mg F/day, and the other contained an average of 0.27 mg F/day. Excretion of fluoride in pooled three-day collections for each subject was about 80% in the urine and 20% in the feces. Pregnant (last half of term) and nonpregnant women demonstrated small negative fluoride balances; the averages were about -0.32 mg F/day and -0.15 mg F/day, respectively. Similar values have been found for young males in other studies. Pregnancy in these subjects did not markedly alter normal fluoride metabolism.

• Related Studies :

  • Skeletal fluorosis from brewed tea

    BACKGROUND:  High fluoride ion (F(-)) levels are found in many surface and well waters. Drinking F(-)-contaminated water typically explains endemic skeletal fluorosis (SF). In some regions of Asia, however, poor quality "brick tea" also causes this disorder. The plant source of brick, black, green, orange pekoe, and oolong tea, Camellia

  • Reversibility of skeletal fluorosis.

    At two x ray examinations in 1957 and 1967, 17 cases of skeletal fluorosis were identified among long term cryolite workers in Copenhagen. In 1982 four of these patients were alive, eight to 15 years after exposure had ended. Radiographs were obtained, and the urinary fluoride excretion was measured. A

  • A Systematic Review and Meta-Analysis of the Relationship Between the Severity of Dental Fluorosis and Fluoride Biomarkers in Endemic Areas.

    The intake of high concentrations of fluoride, mainly through drinking water, diet and fluoridated dentifrices, produces fluorosis, which in its early stages is manifested as dental fluorosis (DF). To recognize exposure to fluoride in endemic areas and to evaluate the risk of developing health impairment, the WHO has established several

  • A comparative study of fluoride ingestion levels, serum thyroid hormone & TSH level derangements, dental fluorosis status among school children from endemic and non-endemic fluorosis areas.

    Abstract The study was undertaken to determine serum/urinary fluoride status and comparison of free T4, free T3 and thyroid stimulating hormone levels of 8 to 15 years old children with and without dental fluorosis living in an endemic and non-endemic fluorosis area. A sample group of 60 male and female school children,

  • Safety of ciprofloxacin therapy in children: magnetic resonance images, body fluid levels of fluoride and linear growth.

    We evaluated the safety of ciprofloxacin administered in a dose of 15–25 mg/kg for 9–16 days, in a case series of 58 children who were between 8 months and 13 years of age. No arthropathy was observed during therapy and follow–up. Blinded evaluation of 22 pairs of nuclear magnetic resonance