Measurement of the content of T3, T4, and TSH in children in endemic fluorosis areas

The contents of T3, T4, TSH, urine fluoride, and urine iodine in 8-12 year-old children [were measured] in endemic fluorosis areas (water fluoride 3.52 mg/L). The results are: T4 content significantly decreased in the blood. T3 and TSH content was significantly elevated, and there is a positive correlation between the

Goitre and Fluorosis in Kenya

[Expressions of iNOS and VEGF mRNAs in thyroid gland of rat with goiter induced by fluoride].

To investigate the mechanism of goiter caused by fluoride, goiter model of SD rats was produced by administering sodium fluoride in drinking water. Histological section of thyroid gland was made, and inducible nitric oxide synthase (iNOS) and vessel endothelial growth factor (VEGF) were determined by RT-PCR. Results showed that the

Effect of sodium fluoride on the thyroid follicular cells and the amelioration by calcium supplementation in albino rats: A Light And An Electron Microscopic Study

Sodium fluoride was the first fluoride compound used in the fluoridation of drinking water and it is still commonly used for that purpose to prevent dental caries. It exerts toxic effects on many soft tissues and organs. The thyroid gland has a strong capacity for absorbing and accumulating fluoride. Objective: The

Fluoride exposure and indicators of thyroid functioning in the Canadian population: implications for community water fluoridation.

BACKGROUND: There are concerns that altered thyroid functioning could be the result of ingesting too much fluoride. Community water fluoridation (CWF) is an important source of fluoride exposure. Our objectives were to examine the association between fluoride exposure and (1) diagnosis of a thyroid condition and (2) indicators of thyroid

Fluoride's Impact on Thyroid Hormones

Up through the 1950s, doctors in Europe and South America prescribed fluoride for this purpose in patients with hyperthyroidism. (Merck Index 1968). Fluoride was selected as a thyroid suppressant based on findings dating back to the mid-19th century that fluoride is a goitrogen (a substance that can cause goiter). When used as

Fluoride & Goiter

Goitre (aka goiter) is an enlargement of the thyroid gland that in some cases can produce visible swelling in the neck. The main cause of goitre is iodine deficiency. Goitre can also be caused by other things, including hypothyroidism and substances that cause goitre (goitrogens). Since as far back as the

Fluorine in the Aetiology of Endemic Goitre

The distribution of endemic goitre in the Punjab and in England is related to the geological distribution of fluorine and to the distribution of human dental fluorosis (mottled enamel). Inquiry showed the presence of dental fluorosis among school-children in two areas of Somerset where two previous observers had recorded a high incidence of goitre, and the absence of dental fluorosis in an adjoining area selected as control where endemic goitre was absent.

Fluoride, Water Hardness, and Endemic Goitre

Variations in goitre prevalence were found to correlate closely with the fluoride content (p=0-74; P<0-01) and with the hardness (p=0.77; P<0-01) of the water in each village. The effects of fluoride and water hardness seem to be independent.

NRC (2006): Fluoride's Impact on the Thyroid Gland

Several lines of information indicate an effect of fluoride exposure on thyroid function. It is difficult to predict exactly what effects on thyroid function are likely at what concentration of fluoride exposure and under what circumstances.