skip to main content

SciTech ConnectSciTech Connect

Title: Possible effects of fluorides on the thyroid

A review of the literature on the relationship of fluorides and the thyroid gland reveals that the fluoride concentration within the thyroid gland on a wet basis is frequently at levels approximating, or above, those of blood and also, frequently, above those of other tissues including the kidneys. According to some investigators the fluoride concentration in the thyroid decreases at a slower rate than in other organs once animals are removed from fluoride intake. Fluoride appears to be actively concentrated by some of the thyroid cells and metabolized into such a form that it is not lost as readily as it is from other tissues when blood levels decrease. Fluorides at sufficient concentration produce profound morphological changes in the thyroid. The lower level of fluoride intake at which this may occur is open to discussion. Functional changes, however, may be seen frequently at daily intakes of 5 mg. Changes in activity of adenyl-cyclase concentrations are frequently encountered in thyroid glands at current levels of fluoride pollution. To date, analytical methods have not permitted these changes to be shown in vivo.
Authors:
Publication Date:
OSTI Identifier:
5117956
Resource Type:
Journal Article
Resource Relation:
Journal Name: Fluoride; (United States); Journal Volume: 9:2
Country of Publication:
United States
Language:
English
Subject:
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.; CYCLASES; ENZYME ACTIVITY; FLUORIDES; BIOLOGICAL EFFECTS; TISSUE DISTRIBUTION; THYROID; MORPHOLOGICAL CHANGES; BLOOD; METABOLISM; BIOLOGICAL MATERIALS; BODY; BODY FLUIDS; DISTRIBUTION; ENDOCRINE GLANDS; ENZYMES; FLUORINE COMPOUNDS; GLANDS; HALIDES; HALOGEN COMPOUNDS; LYASES; MATERIALS; ORGANS 560305* -- Chemicals Metabolism & Toxicology-- Vertebrates-- (-1987)