Abstract

1. Fluoride toxicosis was induced in young rats of the Long-Evans strain. Ten rats received a total of 406.47 mg. each of sodium fluoride injected intraperitoneally over a fifteen-day period, to induce acute poisoning. Seven rats survived, of which six were analyzed for this study. Ten others received a total of 1131.65 mg. each in 100 days, under which chronic regimen five survived.

2. Weight gain of the animals, their appearance, and the gross structure of the liver, kidney, pancreas, adrenal, and thyroid were not significantly different from those in the sodium chloride-injected controls.

3. Histologically, the kidney was the site of greatest damage and showed interstitial edema, tubular destruction, and hyperemia (glomerular and medullary). The pancreas showed increased width of connective tissue septa and evidence of increased mitosis of acinar cells. The thyroid gland was mildly atrophic. In the acutely fluorosed rats there was evidence of adrenal cortical hypertrophy, and the adrenal gland weight was increased in both groups. The liver remained histologically unchanged.

• Related Studies :

  • Absence of DNA damage in multiple organs (blood, liver, kidney, thyroid gland and urinary bladder) after acute fluoride exposure in rats

    Fluoride has been widely used in dentistry as a caries prophylactic agent. However, there has been some speculation that excess fluoride could cause an impact on genome integrity. In the current study, the potential DNA damage associated with exposure to fluoride was assessed in cells of blood, liver, kidney, thyroid

  • Pathological changes in the tissues of rats (albino) and monkeys (macaca radiata) in fluorine toxicosis

    1. Stomach, duodenum, small intestine, kidney, liver, spleen, skin, heart, aorta, lungs, brain, pancreas, adrenals, thyroid and parathyroid of rats and monkeys suffering from chronic fluorosis have been histologically examined. 2. Fluorine has not been found to have any effect on the heart muscle, aorta, skin and parathyroids, whereas it has

  • Investigation on the effect of Hibiscus Sabdariffa calyxethanolic extract on sodium fluoride induced fluorosis in rats

    Flu o rosis was induced by the oral administration of Sodium Fluoride (10mg/kg) for 30 days. On 30th day the Flurosis was confirmed by studying the level of fluorine in serum and urine. Treatment was started from 30th day to 60th day by ingesting Hibiscus Sabdariffa calyxethanolic extract 200 mg/kg and

  • [An investigation on the effect of Rosa roxburghii tratt juice on chronic fluorosis and its mechanism].

    Improved the general condition of chronic fluorosis but had no effect on dental fluorosis enhanced the excretion of fluorine and lowered the fluorine content of serum and bone which has been raised during fluorine intoxication; increased serum vitamin C and protected collagen as manifested by declin[e] of urinary hydroxyproline; inhibited

  • Studies on the DNA and RNA contents of heart, liver and kidney of rats with chronic fluorosis

    17 rats with chronic fluorosis induced by prolonged drinking of water containing 50 ppm fluorine and 17 rats drinking low-fluorine water served as control were used to study the DNA and RNA contents of heart, liver and kidney. The findings suggest that excessive accumulation of fluorine can suppress the synthesis

• Related FAN Content :

  • Fluoridation of drinking water and chronic kidney disease: Absence of evidence is not evidence of absence

    A fairly substantial body of research indicates that patients with chronic renal insufficiency are at an increased risk of chronic fluoride toxicity. Patients with reduced glomerular filtration rates have a decreased ability to excrete fluoride in the urine. These patients may develop skeletal fluorosis even at 1 ppm fluoride in the drinking water.

  • 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.

  • Kidney: A potential target for fluoride toxicity

    The kidneys are the organ responsible for clearing fluoride from the body. In the process of doing so, the kidneys are exposed to concentrations of fluoride that exceed, by a factor of 50, the concentration of fluoride in human blood. As such, the kidney have long been considered a potential

  • 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

  • Fluoride as a Cause of Kidney Disease in Humans

    Because the kidney is exposed to higher concentrations of fluoride than all other soft tissues (with the exception of the pineal gland), there is concern that excess fluoride exposure may contribute to kidney disease - thus initiating a "vicious cycle" where the damaged kidneys increase the accumulation of fluoride, causing