Résumé
In an attempt to evaluate the latent distal renal tubular acidosis (dRTA7) in patients with primary biliary cirrhosis (PBC), and chronic autoinmmune hepatitis (CAH), and differences between them in relation to the sodium urinary excretion ([a]u), thirty four patients divided in two groups were studied. Group A: 17 patients who fullfilled criteria for PBC diagnosis (clinical and humoral and liver biopsy). Group B: 17 patients who fullfilled criteria for CAH diagnosis (clinical and humoral evidence, antinuclear and smooth muscle antibody tiles of 1/80 or above and liver biopsy). Patients with ascitis and/or edema were excluded form the study. Ability to acidify urine was evaluated by gradient between pCO2 in urine and blood (U-BpC02) after alkali infusion. Five patients with dRTA in both groups, the mean [Na]u in Group A was 152.2 ñ 33.8, versus 50.8 ñ 8.1 mEq/l, in Group B. (p=0.00016). We concluded that the prevalence of dRTA was similar en patiens with PBC and CAH but the urinary acidifications impairment of the former did not correlate with [Na]u, as it did whit the latter
Sujets)
Humains , Mâle , Femelle , Adulte , Adulte d'âge moyen , Acidose tubulaire rénale/urine , Maladies auto-immunes/diagnostic , Cirrhose biliaire/diagnostic , Hépatite/diagnostic , Maladies auto-immunes/urine , Maladie chronique , Cirrhose biliaire/urine , Dioxyde de carbone/analyse , Technique d'immunofluorescence , Hépatite/urine , Philippines , Sodium/urine , Tubules contournés distaux/métabolismeRésumé
La determinación de substancias reductoras en orina, se realizó en 40 niños con hepatitis neonatal utilizando, para ello, la prueba de Clinitest y Benedict. Sólo en dos niños se obtuvo como resultado una reacción falsa positiva. Se concluye que el clinitest es un método sencillo, práctico, económico y de gran utilidad para la detección temprana e inicial de galactosemia e intolerancia a la fructuosa. Las que deberán corroborarse en caso necesario posteriormente con un estudio metabólico completo