ABSTRACT
Microalbuminuria is a term to describe a moderate increase in the level of albumin in urine. It is an important prognostic marker for kidney damage in diseases such as diabetes mellitus and hypertension. A simple sandwich-type ultramicroELISA assay (UMELISA) has been developed for the measurement of albumin in human urine samples. Strips coated with a high affinity monoclonal antibody directed against albumin are used as solid phase, to ensure the specificity of the assay. The albumin assay was completed in 1 hr and 30 min, with a measuring range of 1.44-200 ng/mL. The intra- and inter-assay coefficients of variation were 3.98-4.35% and 7.59-8.92%, respectively, depending on the albumin concentrations evaluated. Percentage recovery ranged from 94.26 to 98.50%. Regression analysis showed a good correlation with the commercial quantitative turbidimetric test Microalbumin-turbilatex (n = 240, r = 0.994, p < .01). The analytical performance characteristics of our UMELISA MICROALBUMINA endorse its use for the quantification of albumin in human urine samples. This test will make a cost-effective diagnostic kit accessible to low-income countries such as Latin American countries and is now available in the Cuban Public Health System.
Subject(s)
Albumins/analysis , Albuminuria , Enzyme-Linked Immunosorbent Assay , HumansABSTRACT
Durante los meses de enero y julio de 1990, se estudiaron 100 cepas de Aeromonas, aisladas de niños menores de 5 años con enfermedad diarreica aguda, procedentes de diferentes centros de salud del país. Utilizando el esquema de Popoff y Veron amplaido por Janda, se logró identificar en especies el 63 por ciento de las cepas mediante el uso de la pruebas primarias, y el 37 por ciento restante complementado con la pruebas suplementarias, fueron identificadas el 100 por ciento de las cepas en Aeromonas sobria, Aeromonas hydrophila y Aeromonas caviae