title: [Validity of some urinary tests considered singly or in combination in the study of renal effects of cadmium].
abstract: A number of indicators of renal effect (N-acetyl-glucosaminidase, retinol binding protein, beta-2-microglobulin, albuminuria) were measured in 42 cadmium-exposed workers divided into 3 subgroups on the basis of the results of the last 10 years' biological monitoring (less than 3, 3-10, greater than 10 micrograms/l). An increase in the first three indicators was observed, particularly in the third subgroup, which, however, due to the wide dispersion of the values, was not statistically significant by the Kruskal-Wallis test. Taking the indicators singly, the marked increase in RBP and beta-2-microglobulin in the heavily exposed subjects was confirmed, along with an increasing sensitivity for NAG, while albuminuria levels were unchanged. Assessment of the "degree of association" of the altered tests demonstrated that the number and type of "association" varies between the subgroups in relation to the exposure conditions: in the first group there were no associations between the altered tests, whereas there were 2 duplicates in the second and 2 duplicates, 2 triplicates and 3 quadruplicates in the heavily exposed group. In the study of the renal effects of cadmium, it is therefore advisable to use several indicators and assess their behaviour both singly and combined, and also analyse the altered tests on the basis of the number and type of "association".
authors: Cattedra di Medicina del Lavoro, Università di Brescia.
authors: P
authors: P
authors: Apostoli
authors: F
authors: F
authors: Brandi
authors: F
authors: F
authors: Toffoletto
authors: L
authors: L
authors: Alessio
mesh_terms: D000328:Adult; D000419:Albuminuria / Q000175:diagnosis; D002104:Cadmium / Q000009:adverse effects* / Q000652:urine; D002105:Cadmium Poisoning / Q000175:diagnosis / Q000652:urine*; D004796:Clinical Enzyme Tests; D006801:Humans; D007231:Infant, Newborn; D007668:Kidney / Q000187:drug effects*; D009784:Occupational Diseases / Q000175:diagnosis / Q000652:urine*; D012177:Retinol-Binding Proteins / Q000652:urine; D013054:Spectrophotometry, Atomic; D001613:beta 2-Microglobulin / Q000652:urine
chemical_list: D012177:Retinol-Binding Proteins; D001613:beta 2-Microglobulin; D002104:Cadmium
vernacular_title: Validita' di alcuni tests urinari, considerati singolarmente o in associazione, nello studio degli effetti renali del cadmio.