Abstract
Fatty acid-binding proteins (FABPs) are a group of intracellular proteins of 14 kDa, belonging to the lipocalin family. FABPs play a key role in the binding and trafficking of fatty acids and some other hydrophobic molecules. In the human kidney, liver-type FABP (L-FABP) is expressed in the proximal tubule. L-FABP expression and secretion into urine is increased during tubulointerstitial damage in the kidney. Our research laboratory has developed L-FABP ELISA kit for diagnostic use in Japan. This chapter provides a brief summary of the urinary L-FABP monitoring with particular emphasis on its important roles in recent clinical studies (e.g., diabetic nephropathy, non-diabetic nephropathy, contrast-induced acute kidney injury, septic shock, kidney transplant, pediatric acute kidney injury).
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- ACE:
-
Angiotensin converting enzyme
- ADPKD:
-
Autosomal dominant polycystic kidney disease
- AER:
-
Albumin excretion rate
- AKI:
-
Acute kidney injury
- AKIN:
-
Acute Kidney Injury Network
- APACHE:
-
Acute physiology and chronic health evaluation
- ARB:
-
Angiotensin II receptor blocker
- ARF:
-
Acute renal failure
- AUC:
-
Area under the curve
- BSA:
-
Bovine serum albumin
- CCD:
-
Charge coupled devices
- CI-AKI:
-
Contrast-induced acute kidney injury
- CKD:
-
Chronic kidney disease
- CPB:
-
Cardiopulmonary bypass
- DN:
-
Diabetic nephropathy
- ELISA:
-
Enzyme-linked immunosorbent assay
- FABP:
-
Fatty acid-binding protein
- FFA:
-
Free fatty acid
- FGS:
-
Focal glomerulosclerosis
- HIF:
-
Hypoxia-inducible factor
- HNF:
-
Hepatocyte nuclear factor
- ICU:
-
Intensive care unit
- IL-18:
-
Interleukin-18
- IVD:
-
In vitro diagnostics
- KDIGO:
-
Kidney Disease Improving Global Outcomes
- KIM-1:
-
Kidney injury molecule-1
- LDL:
-
Low-density lipoprotein
- L-FABP:
-
Liver-type fatty acid-binding protein
- MCNS:
-
Minimal change nephrotic syndrome
- MG:
-
Microglobulin
- NAG:
-
N-acetyl-β-d-glucosaminidase
- NGAL:
-
Neutrophil gelatinase-associated lipocalin
- 8-OHdG:
-
8-Hydroxydeoxyguanosine
- pAKI:
-
Pediatric acute kidney injury
- PMX-F:
-
Polymyxin B-immobilized fiber
- PPAR:
-
Peroxisome proliferator-activated receptor
- ROC:
-
Receiver operating characteristic
- UAE:
-
Urinary albumin excretion
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Acknowledgments
The authors thank Dr. Kenjiro Kimura and Dr. Atsuko Kamijo-Ikemori (Department of Nephrology and Hypertension, Internal Medicine, St. Marianna University School of Medicine, Kanagawa, Japan), Dr. Yasuhiko Tomino and Dr. Yusuke Suzuki (Division of Nephrology, Department of Internal Medicine, Juntendo University Faculty of Medicine, Tokyo, Japan) for scientific encouragement and helpful discussions.
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Oikawa, T., Sugaya, T. (2014). Urinary L-Type Fatty Acid-Binding Protein as a New Renal Biomarker. In: Tsukahara, H., Kaneko, K. (eds) Studies on Pediatric Disorders. Oxidative Stress in Applied Basic Research and Clinical Practice. Springer, New York, NY. https://doi.org/10.1007/978-1-4939-0679-6_7
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