title: Serum ionic fluoride levels in haemodialysis and continuous ambulatory peritoneal dialysis patients.
abstract: High serum fluoride (F-) in patients with chronic renal failure (CRF) and end-stage renal disease (ESRD) is associated with risk of renal osteodystrophy and other bone changes. This study was done to determine F- in normal healthy controls and patients with ESRD on haemodialysis (HD) or peritoneal dialysis (PD). Seventeen healthy controls (12 males, 5 females) and 39 ESRD patients on dialysis (17 males, 22 females) were recruited in the study in a community with 47.4 +/- 3.28 microM/l (range 44-51 microM/l) of F- content in drinking water. Control subjects showed a mean serum F- concentration of 1.08 +/- 0.350 microM/l. Males in control group showed slightly higher F- levels (1.15 +/- 0.334, range 0.55-1.9 microM/l) than females (0.92 +/- 0.370, range 0.6-1.5 microM/l). Mean serum F- concentration did not correlate significantly with age and sex among control subjects, whereas such correlation was observed in patients with ESRD on dialysis. Mean serum F- concentration was significantly higher in patients on dialysis (2.67 +/- 1.09, range 0.8-5.2 microM/l) than normal controls. When grouped according to sex, the mean serum F- concentration in males (3.05 +/- 1.04, range 1.8-5.2 microM/l) was significantly higher than females (2.38 +/- 1.08, range 0.8-5.2 microM/l). When patients were grouped according to age, it was observed that F- concentration was significantly higher in patients with age groups 21-70 (2.86 +/- 1.05) than those with age group 13-20 years (1.42 +/- 0.531). Thus F- concentration correlated with age and sex, being higher in males and above 20 years. Despite appreciable clearance of F- (39-90%) across the peritoneum, patients on CAPD showed higher serum F- concentration than those on HD (3.1 +/- 1.97 vs 2.5 +/- 1.137 microM/l). Of the total 39 patients on dialysis 39% had their serum F- concentration above 3.0 microM/l, posing the risk of renal osteodystrophy.
authors.affiliation: King Khalid University Hospital, Riyadh, Saudi Arabia.
authors.forename: J S
authors.initials: JS
authors.lastname: al-Wakeel
authors.forename: A H
authors.initials: AH
authors.lastname: Mitwalli
authors.forename: S
authors.initials: S
authors.lastname: Huraib
authors.forename: S
authors.initials: S
authors.lastname: al-Mohaya
authors.forename: H
authors.initials: H
authors.lastname: Abu-Aisha
authors.forename: A R
authors.initials: AR
authors.lastname: Chaudhary
authors.forename: S A
authors.initials: SA
authors.lastname: al-Majed
authors.forename: N
authors.initials: N
authors.lastname: Memon
mesh_terms: D000328:Adult; D005260:Female; D005459:Fluorides / Q000032:analysis / Q000097:blood*; D006801:Humans; D007676:Kidney Failure, Chronic / Q000097:blood; D008297:Male; D008875:Middle Aged; D010531:Peritoneal Dialysis, Continuous Ambulatory; D006435:Renal Dialysis; D014881:Water Supply / Q000032:analysis
chemical_list: D005459:Fluorides