Palabras clave
doença renal
prognóstico
biomarcador
Cómo citar
Resumen
Lipocalina associada à gelatinase neutrofílica (NGAL) é uma molécula proteica predominantemente expressa na parte distal do néfron após a ocorrência de lesão renal. Diferentemente da creatinina sérica e da taxa de filtração glomerular, que são marcadores de função renal, os níveis aumentados de NGAL, tanto no soro quanto na urina, estão intimamente ligados a lesões estruturais do néfron. Os estudos clínicos indicam que poucas horas após a ocorrência da lesão renal aguda os níveis séricos e urinários de NGAL já se apresentam significativamente elevados, enquanto os níveis séricos de creatinina e a sua depuração renal apenas sofrem alterações significativas entre 24-48h após a lesão. Assim, a utilização de marcadores de função renal, usualmente avaliados na prática clínica, pode apresentar algumas limitações além de dificultar a aplicação de medidas precoces que visam a proteção renal. Esta revisão da literatura tem por objetivo analisar os aspectos biológicos e as aplicações da mensuração de NGAL em algumas condições clínicas, incluindo injúria renal, nefropatias e isquemia renal.
Citas
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