Diminished kidney function and nephrocalcinosis in rats fed a magnesium-deficient diet.
J Nutr Sci Vitaminol (Tokyo)
; 44(4): 515-23, 1998 Aug.
Article
em En
| MEDLINE
| ID: mdl-9819712
ABSTRACT
The effect of a magnesium-deficient diet on kidney function was studied in young male rats. The rats were fed a purified diet with a magnesium content of either 20.5 (control diet) or 2.6 mmol/kg (magnesium-deficient diet) for 21 d. In rats fed the magnesium-deficient diet, kidney wet and dry weights were significantly increased, and calcium and phosphorus concentrations in the kidney were significantly higher than in rats fed the control diet. Upon histological examination, an increase in the mesangial matrix of the glomeruli and injury to the brush border of the proximal tubules were observed in rats fed the magnesium-deficient diet. Also, a deposition of calcium was observed in the tubules of the corticomedullary junction and medulla of these rats. Total protein and albumin concentrations in serum were significantly decreased in rats fed the magnesium-deficient diet. Urinary albumin excretion was significantly higher, and N-acetyl-beta-D-glucosaminidase activity in the urine was significantly increased in rats fed the magnesium-deficient diet. These findings indicate diminished glomerular and proximal tubular functions. We suggest that a magnesium-deficient diet not only induces nephrocalcinosis, but it also diminishes kidney function.
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Base de dados:
MEDLINE
Assunto principal:
Rim
/
Deficiência de Magnésio
/
Nefrocalcinose
Idioma:
En
Revista:
J Nutr Sci Vitaminol (Tokyo)
Ano de publicação:
1998
Tipo de documento:
Article
País de afiliação:
Japão