• Am. J. Physiol. Renal Physiol. · Apr 2009

    Review

    Urinary fatty acid-binding protein 1: an early predictive biomarker of kidney injury.

    • Eisei Noiri, Kent Doi, Kousuke Negishi, Tamami Tanaka, Yoshifumi Hamasaki, Toshiro Fujita, Didier Portilla, and Takeshi Sugaya.
    • 107 Lab., Depts. of Nephrology and Endocrinology, Univ. of Tokyo, 7-3-1 Hongo, Bunkyo, Tokyo, Japan 113-8655. noiri-tky@umin.ac.jp
    • Am. J. Physiol. Renal Physiol. 2009 Apr 1;296(4):F669-79.

    AbstractIn the development of novel therapeutic strategies for kidney disease, new renal biomarkers for early detection and accurate evaluation of renal injury are urgently required for both acute kidney injury (AKI) and chronic kidney disease (CKD). Fatty acid-binding protein 1 (FABP1) is expressed in renal proximal tubule cells and shed into urine in response to hypoxia caused by decreased peritubular capillary blood flow. To clarify the role of urinary FABP1 in kidney disease, we established human FABP1 transgenic mice and evaluated the responses of FABP1 to several AKI and CKD models. Moreover, there are accumulating clinical data that urinary FABP1 can detect human AKI earlier than serum creatinine and can distinguish the risk population for AKI. Investigation with "humanized" FABP1 transgenic mice and measurement of clinical samples allowed us to develop urinary FABP1 as a new renal biomarker. Further clinical studies are necessary to confirm the potential of urinary FABP1 for clinical application.

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