Abstract
No abstract available
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The effect of sodium fluoride on the metamorphosis of tadpoles
The effect of sodium fluoride on Rana temporaria tadpoles was investigated by adding it in the doses of 1, 2 and 10 mg/lilre to the aquaria where the tadpoles were kept. In all three groups the time of metamorphosis was delayed as compared with that of the controls. Histological examination
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A survey of goiter morbidity in Ban Mae Toen, northwest Thailand.
A number of cases of goiter have been reported from Ban Mae Toen (BMT) northwestern Thailand, therefore we carried out this study to evaluate the prevalence and severity of goiter in BMT. We suspected fluoride toxicity as a factor in this phenomenon, therefore we used a WHO model using photographs
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Sex-specific effects of fluoride and lead on thyroid endocrine function in zebrafish (Danio rerio).
Fluoride (F) and lead (Pb) are widespread pollutants in the environment. F and Pb affect the thyroid endocrine system, but the mechanism of action between F and Pb is still unclear. In this study, in order to evaluate the effects of F or/and Pb on histopathological changes, antioxidant indices, the levels of
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[Effects of chronic fluorosis on the thyroid gland].
No abstract available
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Effects of chronic fluorosis on thyroxine, triiodothyronine, and protein-bound iodine in cows
This study was conducted to evaluate the effects of chronic fluorosis in cows on their blood serum levels of thyroxine (T4), triiodothyronine (T3), and protein-bound iodine (PBI). Data collected from twenty cows with chronic fluorosis in the Tendurek Mountain region (altitude about 2000 m) in East Anatolia, Turkey, were compared
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The Relationship Between Fluoride Exposure & Goitre in South Africa
As a general rule simple goitre, irrespective of the cause, can be very, or fairly, satisfactorily combated by an adequate increase in man's daily iodine intake, except when the enlargement of the gland is due to the ingestion of excessive amounts of fluorine. The only correct solution to fluorine-induced endemic goitre is the removal of this element from the drinking water.
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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.
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Mikhailets (1996): Functional state of thyroid under extended exposure to fluorides
Abnormalities in the thyroid function characterized by a decreased iodine absorption function of the thyroid, a low level T3 syndrome, and a slight increase of the TSH level are observed in cases of chronic fluorine intoxication in the industrial workers.
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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
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Is fluoride-induced hyperthyroidism a cause of psychosis among East African immigrants to Scandinavia?
When people with a compensated fluoride-induced hypothyroidism move to a low-fluoride area, the fluoride-induced inhibition of the production of thyroid hormones ceases. In Scandinavia, the dietary intake of iodine is usually quite high due to iodized table salt and easy access to marine fish. Under these conditions, the elevated capacity for production of thyroid hormones may result in hyperthyroidism.
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