Abstract

The effects of renal function on human renal fluoride (F-) excretion and serum F- concentrations were studied in subjects with normal renal function, in patients with variable degrees of renal insufficiency and in patients undergoing regular hemodialysis treatment. The mechanisms of human renal F- excretion include glomerular filtration and tubular reabsorption. Patients suffering from chronic renal disease tend to continue to excrete normal dietary loads of F- until the creatinine clearance decreases below 25 ml/min. In chronic renal failure elevation of the serum fluoride concentration is delayed and less than might be expected from impairment of the glomerular filtration rate, because tubular reabsorption diminishes presumably due to expansion of the extracellular fluid compartiment.

• Related Studies :

  • Exposure to excessive fluoride during hemodialysis

    Discussion These data indicate that a patient maintained by hemodialysis in a community using fluoridated water may be exposed to a fluoride concentration higher than that present in tap water if the deionizer is allowed to become exhausted while the patient is being dialyzed. The concentration reached 520 uM in the

  • Effects of fluoride on bone metabolism in patients with hemodialysis

    The maior pathway of fluoride elimination from the human body is the kidney. The discharge of fluoride into urine depends on the clearance of the kidney. Fluoride in serum of hemodialysis patients is higher than that of healthy subjects. Fluoride is not reduced sufficiently with hemodialysis. Those patients are in

  • High fluoride exposure in hemodialysis patients

    The observation of higher plasma flouride levels in our hemodialysis (HD) patients than our continuous ambulatory peritoneal dialysis (CAPD) patients (4.0 +/- 0.5 mumol/L [n = 17] v 2.5 +/- 0.3 mumol/L [n = 17], P less than 0.005) prompted an evaluation of fluoride metabolism during HD. We found that

  • Long-term follow up of ionic plasma fluoride level in patients receiving hemodialysis treatment

    The elimination half-life of fluoride is significantly increased in patients with chronic renal failure. This led us to conduct a study of variations of its plasma levels in 35 patients receiving dialysis treatment. In this population, there is a gaussian distribution of the values before and after the hemodialysis session,

  • Studies on serum fluoride and bone metabolism in patients with long term hemodialysis

    With growing experience of the long-term treatment of patients with end stage renal disease by hemodialysis, the safety of fluoridated water supply for dialysate and the effect on the bone metabolism has been discussed. In this study, concentrations of fluoride (F), calcium (Ga). aluminum (AI) and biochemical indices of bone metabolism,

• Related FAN Content :

  • Fluoride & Osteomalacia

    One of fluoride's most well-defined effects on bone tissue is it's ability to increase the osteoid content of bone. Osteoid is unmineralized bone tissue. When bones have too much of it, they become soft and prone to fracture -- a condition known as osteomalacia. As shown below, fluoride has repeatedly been

  • 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.

  • Kidney Patients Are at Increased Risk of Fluoride Poisoning

    It is well established that individuals with kidney disease are susceptible to suffering bone damage and other ill effects from low levels of fluoride exposure. Kidney patients are at elevated risk because when kidneys are damaged they are unable to efficiently excrete fluoride from the body. As a result, kidney patients

  • Unheeded Warnings: Government Health Authorities Ignore Fluoride Risk for Kidney Patients

    Despite the well known fact that individuals with kidney disease are at much higher risk of fluoride toxicity than the general population, there has yet to be any attempt in the United States, or any other country that practices mass-scale water fluoridation to determine the prevalence of fluoride-related effects (e.g.,

  • Exposure Pathways Linked to Skeletal Fluorosis

    Excessive fluoride exposure from any source -- and from all sources combined -- can cause skeletal fluorosis. Some exposure pathways , however, have been specifically identified as placing individuals at risk of skeletal fluorosis. These exposure pathways include: Fluoridated Water for Kidney Patients Excessive Tea Consumption High-Fluoride Well Water Industrial Fluoride Exposure Fluorinated Pharmaceuticals (Voriconazole