当前位置： SCI文献检索 > BMC Nephrology期刊下所有文献 > Urinalysis findings and urinary kidney injury biomarker concentrations.

Urinalysis findings and urinary kidney injury biomarker concentrations.

Abstract：

INTRODUCTION:Urinary biomarkers of kidney injury are presumed to reflect renal tubular damage. However, their concentrations may be influenced by other factors, such as hematuria or pyuria. We sought to examine what non-injury related urinalysis factors are associated with urinary biomarker levels. METHODS:We examined 714 adults who underwent cardiac surgery in the TRIBE-AKI cohort that did not experience post-operative clinical AKI (patients with serum creatinine change of ≥ 20% were excluded). We examined the association between urinalysis findings and the pre- and first post-operative urinary concentrations of 4 urinary biomarkers: neutrophil gelatinase-associated lipocalin (NGAL), interleukin-18 (IL-18), kidney injury molecule-1 (KIM-1), and liver fatty acid binding protein (L-FABP). RESULTS:The presence of leukocyte esterase and nitrites on urinalysis was associated with increased urinary NGAL (R2 0.16, p < 0.001 and R2 0.07, p < 0.001, respectively) in pre-operative samples. Hematuria was associated with increased levels of all 4 biomarkers, with a much stronger association seen in post-operative samples (R2 between 0.02 and 0.21). Dipstick proteinuria concentrations correlated with levels of all 4 urinary biomarkers in pre-operative and post-operative samples (R2 between 0.113 and 0.194 in pre-operative and between 0.122 and 0.322 in post-operative samples). Adjusting the AUC of post-operative AKI for dipstick proteinuria lowered the AUC for all 4 biomarkers at the pre-operative time point and for 2 of the 4 biomarkers at the post-operative time point. CONCLUSIONS:Several factors available through urine dipstick testing are associated with increased urinary biomarker concentrations that are independent of clinical kidney injury. Future studies should explore the impact of these factors on the prognostic and diagnostic performance of these AKI biomarkers.

journal_name

BMC Nephrol

journal_title

BMC nephrology

authors

Nadkarni GN,Coca SG,Meisner A,Patel S,Kerr KF,Patel UD,Koyner JL,Garg AX,Philbrook HT,Edelstein CL,Shlipak M,El-Khoury J,Parikh CR,TRIBE-AKI Consortium Investigators.

doi

10.1186/s12882-017-0629-z

subject

Has Abstract

pub_date

2017-07-06 00:00:00

pages

218

issue

issn

1471-2369

pii

10.1186/s12882-017-0629-z

journal_volume

pub_type

杂志文章,多中心研究

在线工具

Urinalysis findings and urinary kidney injury biomarker concentrations.