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Proficient Novel Biomarkers Guide Early Detection of Acute Kidney Injury: A Review. Diseases 2022; 11:diseases11010008. [PMID: 36648873 PMCID: PMC9844481 DOI: 10.3390/diseases11010008] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2022] [Revised: 11/12/2022] [Accepted: 11/30/2022] [Indexed: 01/03/2023] Open
Abstract
The definition of acute kidney injury (AKI), despite improvements in criteria, continues to be based on the level of serum creatinine and urinary output that do not specifically indicate tubular function or injury, or glomerular function or injury that is not significant enough to warrant acute hospitalization of the patient. Finding novel biomarkers of AKI has become a major focus nowadays in nephrology to overcome the further complications of end stage renal disease (ESRD). Many compounds, such as KIM 1, IL 18, NGAL, uromodulin, calprotectin, vanin 1, galactin 3, platelet-derived growth factor (PDGF), urinary Na+/H+ exchanger isoform 3 (NHE3), retinol binding protein (RBP) and Cystatin C, are released from the renal tubules and thus any alterations in tubular function can be detected by measuring these parameters in urine. Additionally, glomerular injury can be detected by measuring immunoglobulin G, nephrin, podocalyxin, podocin, transferrin, netrin-1, pyruvate kinase M2, etc. in urine. These novel biomarkers will be useful for timing the initial insult and assessing the duration of AKI. According to available research, these biomarkers could be applied to assess the onset of AKI, distinguishing between kidney injury and dysfunction, directing the management of AKI, and enhancing disease diagnosis. Therefore, we intend to present recent developments in our understanding of significant biomarkers implicated in various aspects of renal damage. Numerous biomarkers are implicated in various pathophysiological processes that follow renal injury, and can improve prognosis and risk classification.
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Tajima S, Yamamoto N, Masuda S. Clinical prospects of biomarkers for the early detection and/or prediction of organ injury associated with pharmacotherapy. Biochem Pharmacol 2019; 170:113664. [PMID: 31606409 DOI: 10.1016/j.bcp.2019.113664] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2019] [Accepted: 10/08/2019] [Indexed: 12/31/2022]
Abstract
Several biomarkers are used to monitor organ damage caused by drug toxicity. Traditional markers of kidney function, such as serum creatinine and blood urea nitrogen are commonly used to estimate glomerular filtration rate. However, these markers have several limitations including poor specificity and sensitivity. A number of serum and urine biomarkers have recently been described to detect kidney damage caused by drugs such as cisplatin, gentamicin, vancomycin, and tacrolimus. Neutrophil gelatinase-associated lipocalin (NGAL), liver-type fatty acid-binding protein (L-FABP), kidney injury molecule-1 (KIM-1), monocyte chemotactic protein-1 (MCP-1), and cystatin C have been identified as biomarkers for early kidney damage. Hy's Law is widely used as to predict a high risk of severe drug-induced liver injury caused by drugs such as acetaminophen. Recent reports have indicated that glutamate dehydrogenase (GLDH), high-mobility group box 1 (HMGB-1), Keratin-18 (k18), MicroRNA-122 and ornithine carbamoyltransferase (OCT) are more sensitive markers of hepatotoxicity compared to the traditional markers including the blood levels of amiotransferases and total bilirubin. Additionally, the rapid development of proteomic technologies in biofluids and tissue provides a new multi-marker panel, leading to the discovery of more sensitive biomarkers. In this review, an update topics of biomarkers for the detection of kidney or liver injury associated with pharmacotherapy.
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Affiliation(s)
- Soichiro Tajima
- Department of Pharmacy, Kyushu University Hospital, Fukuoka 812-8582, Japan
| | - Nanae Yamamoto
- Department of Pharmacy, Kyushu University Hospital, Fukuoka 812-8582, Japan
| | - Satohiro Masuda
- Department of Pharmacy, Kyushu University Hospital, Fukuoka 812-8582, Japan; Department of Clinical Pharmacology and Biopharmaceutics, Graduate School of Pharmaceutical Sciences, Kyushu University, Fukuoka 812-8582, Japan; Department of Pharmacy, International University of Health and Welfare Narita Hospital, Japan; Department of Clinical Pharmacy, Faculty of Pharmaceutical Sciences, International University of Health and Welfare Narita Hospital, Japan.
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Horie S, Oya M, Nangaku M, Yasuda Y, Komatsu Y, Yanagita M, Kitagawa Y, Kuwano H, Nishiyama H, Ishioka C, Takaishi H, Shimodaira H, Mogi A, Ando Y, Matsumoto K, Kadowaki D, Muto S. Guidelines for treatment of renal injury during cancer chemotherapy 2016. Clin Exp Nephrol 2018; 22:210-244. [PMID: 28856465 PMCID: PMC5805816 DOI: 10.1007/s10157-017-1448-z] [Citation(s) in RCA: 48] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Shigeo Horie
- Department of Urology, Juntendo University Graduate School of Medicine, 2-1-1, Hongo, Bunkyo-ku, Tokyo, 113-8421, Japan.
- Department of Advanced Informatics for Genetic Disease, Juntendo University Graduate School of Medicine, Tokyo, Japan.
| | - Mototsugu Oya
- Department of Urology, Keio University School of Medicine, Tokyo, Japan
| | - Masaomi Nangaku
- Division of Nephrology and Endocrinology, The University of Tokyo Graduate School of Medicine, Tokyo, Japan
| | - Yoshinari Yasuda
- Department of CKD Initiatives/Nephrology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Yasuhiro Komatsu
- Division of Nephrology, Department of Medicine, St. Luke's International Hospital, Tokyo, Japan
| | - Motoko Yanagita
- Department of Nephrology, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Yuko Kitagawa
- Department of Surgery, Keio University School of Medicine, Tokyo, Japan
| | - Hiroyuki Kuwano
- Department of General Surgical Science, Gunma University Graduate School of Medicine, Gunma, Japan
| | - Hiroyuki Nishiyama
- Department of Urology, Faculty of Medicine, University of Tsukuba, Ibaraki, Japan
| | - Chikashi Ishioka
- Department of Clinical Oncology, Institute of Development, Aging and Cancer, Tohoku University, Miyagi, Japan
| | - Hiromasa Takaishi
- Keio Cancer Center, Keio University School of Medicine, Tokyo, Japan
| | - Hideki Shimodaira
- Department of Clinical Oncology, Institute of Development, Aging and Cancer, Tohoku University, Miyagi, Japan
| | - Akira Mogi
- Department of General Surgical Science, Gunma University Graduate School of Medicine, Gunma, Japan
| | - Yuichi Ando
- Department of Clinical Oncology and Chemotherapy, Nagoya University Hospital, Aichi, Japan
| | - Koji Matsumoto
- Division of Medical Oncology, Hyogo Cancer Center, Hyogo, Japan
| | - Daisuke Kadowaki
- Department of Clinical Pharmacology, Faculty of Pharmaceutical Sciences, Kumamoto University, Kumamoto, Japan
| | - Satoru Muto
- Department of Urology, Juntendo University Graduate School of Medicine, 2-1-1, Hongo, Bunkyo-ku, Tokyo, 113-8421, Japan
- Department of Advanced Informatics for Genetic Disease, Juntendo University Graduate School of Medicine, Tokyo, Japan
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Mise K, Hoshino J, Ueno T, Hazue R, Hasegawa J, Sekine A, Sumida K, Hiramatsu R, Hasegawa E, Yamanouchi M, Hayami N, Suwabe T, Sawa N, Fujii T, Hara S, Ohashi K, Takaichi K, Ubara Y. Prognostic Value of Tubulointerstitial Lesions, Urinary N-Acetyl-β-d-Glucosaminidase, and Urinary β2-Microglobulin in Patients with Type 2 Diabetes and Biopsy-Proven Diabetic Nephropathy. Clin J Am Soc Nephrol 2016; 11:593-601. [PMID: 26801478 DOI: 10.2215/cjn.04980515] [Citation(s) in RCA: 81] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2015] [Accepted: 12/16/2015] [Indexed: 01/29/2023]
Abstract
BACKGROUND AND OBJECTIVES Some biomarkers of renal tubular injury are reported to be useful for predicting renal prognosis in the early stage of diabetic nephropathy (DN). Our study compared predictions of the renal prognosis by such biomarkers and by histologic tubulointerstitial damage. DESIGN, SETTING, PARTICIPANTS, & MEASUREMENTS Among 210 patients with type 2 diabetes and biopsy-proven DN managed from 1985 to 2011, 149 patients with urinary N-acetyl-β-d-glucosaminidase (NAG) and urinary β2-microglobulin (β2-MG) data at the time of renal biopsy were enrolled. The primary outcome was a decline in eGFR of ≥50% from baseline or commencement of dialysis for ESRD. RESULTS The median follow-up period was 2.3 years (interquartile range, 1.1-5.3), and the primary outcome was noted in 94 patients. Mean eGFR was 46.3±23.2 ml/min per 1.73 m(2), and 132 patients (89%) had overt proteinuria at baseline. Cox proportional hazards analysis revealed that the association of urinary NAG and β2-MG with the outcome was attenuated after adjustment for known promoters of progression (+1 SD for log NAG: hazard ratio [HR], 1.14; 95% confidence interval [95% CI], 0.84 to 1.55; +1 SD for log β2-MG: HR, 1.23; 95% CI, 0.94 to 1.62). In contrast, the interstitial fibrosis and tubular atrophy (IFTA) score was still significantly correlated with the outcome after adjustment for the same covariates (+1 for IFTA score: HR, 2.31; 95% CI, 1.56 to 3.43). Moreover, adding the IFTA score to a model containing known progression indicators improved prediction of the outcome (increase of concordance index by 0.02; 95% CI, 0.00 to 0.05; category-free net reclassification improvement by 0.54; 95% CI, 0.03 to 1.05; and relative integrated discrimination improvement by 0.07; 95% CI, -0.08 to 0.22). CONCLUSIONS Adding urinary NAG and β2-MG excretion to known promoters of progression did not improve prognostication, whereas adding the IFTA score did. The IFTA score may be superior to these tubulointerstitial markers for predicting the renal prognosis in advanced DN.
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Affiliation(s)
- Koki Mise
- Nephrology Center, Okinaka Memorial Institute for Medical Research, Toranomon Hospital, Tokyo, Japan; Department of Nephrology, Rheumatology, Endocrinology and Metabolism, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences; and
| | | | | | | | | | | | | | | | | | | | | | | | | | | | - Shigeko Hara
- Nephrology Center, Okinaka Memorial Institute for Medical Research, Toranomon Hospital, Tokyo, Japan
| | - Kenichi Ohashi
- Department of Pathology, and Department of Pathology, Yokohama City University Graduate School of Medicine, Kanagawa, Japan
| | - Kenmei Takaichi
- Nephrology Center, Okinaka Memorial Institute for Medical Research, Toranomon Hospital, Tokyo, Japan
| | - Yoshifumi Ubara
- Nephrology Center, Okinaka Memorial Institute for Medical Research, Toranomon Hospital, Tokyo, Japan
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Charlton JR, Portilla D, Okusa MD. A basic science view of acute kidney injury biomarkers. Nephrol Dial Transplant 2014; 29:1301-11. [PMID: 24385545 DOI: 10.1093/ndt/gft510] [Citation(s) in RCA: 189] [Impact Index Per Article: 18.9] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
Over the last decade, significant progress has been made in the identification and validation of novel biomarkers as well as refinements in the use of serum creatinine as a marker of kidney function. These advances have taken advantage of laboratory investigations, which have identified these novel molecules that serve important biological functions in the pathogenesis of acute kidney injury (AKI). As we advance and validate these markers for clinical studies in AKI, we recognize that they serve not only to improve our understanding of AKI, but they could also serve as potential targets for the treatment of AKI. This review will underscore the biological basis of specific biomarkers that will contribute to the advancement in the treatment and outcomes of AKI.
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Affiliation(s)
- Jennifer R Charlton
- Department of Pediatrics, University of Virginia Health System, Charlottesville, VA, USA Division of Nephrology, University of Virginia Health System, Charlottesville, VA, USA
| | - Didier Portilla
- Department of Medicine, University of Arkansas for Medical Sciences, Little Rock, AR, USA
| | - Mark D Okusa
- Division of Nephrology, University of Virginia Health System, Charlottesville, VA, USA Department of Medicine, University of Virginia Health System, Charlottesville, VA, USA
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Ruangyuttikarn W, Panyamoon A, Nambunmee K, Honda R, Swaddiwudhipong W, Nishijo M. Use of the kidney injury molecule-1 as a biomarker for early detection of renal tubular dysfunction in a population chronically exposed to cadmium in the environment. SPRINGERPLUS 2013; 2:533. [PMID: 24255836 PMCID: PMC3824703 DOI: 10.1186/2193-1801-2-533] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/06/2013] [Accepted: 10/09/2013] [Indexed: 11/10/2022]
Abstract
Cadmium (Cd) has been found as an environmental pollutant in Mae Sot district, Tak province, Thailand. Prolong exposure to high levels of Cd of the resident increases high risk of Cd toxicity especially to kidney which is the primary target of Cd. In order to investigate the early effect of Cd induced renal dysfunction, a kidney injury molecule-1 (KIM-1), a novel biomarker of renal tubular dysfunction, was measured using an enzyme linked immunosorbent assay (ELISA). The method was validated and used to quantify the KIM-1 concentrations in the urine of 700 subjects (260 men, 440 women) who lived in the Cd contaminated area. The KIM-1 concentrations were compared to the concentrations of two conventional renal tubular dysfunction biomarkers, N-acetyl-β-D-glucosaminidase (NAG) and β2-microglobulin (β2-MG). Urinary KIM-1 was correlated with urinary and blood Cd as well as NAG. After adjustment of age and smoking, urinary KIM-1 was correlated with blood Cd more than urinary NAG did. Clear dose response relationships of urinary KIM-1 with urinary Cd were shown in both men and women. These results indicate that the urinary KIM-1 might be more sensitive biomarker than urinary NAG and β2-MG for an early detection of renal tubular dysfunction. It is useful as a tool to detect renal effect of toxicity due to chronic Cd exposure at high level.
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Affiliation(s)
- Werawan Ruangyuttikarn
- Division of Toxicology, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand
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7
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Capodicasa E, Angelini A, Tassi C. Isoenzyme A and UrinaryN-Acetyl-β-D-Glucosaminidase Activity in Normal Pregnancy. Ren Fail 2011; 33:650-3. [DOI: 10.3109/0886022x.2011.585262] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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9
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Abstract
Despite the well-known limitations, currently the most widely used biomarkers for the early detection of chronic kidney disease or acute kidney injury are proteinuria, serum creatinine, and blood urea nitrogen. All of these are less than optimal and tend to focus attention on later stages of injury when therapies may be less effective. Recently, there has been a great surge of interest in identifying novel biomarkers that can be easily detected in the urine that can diagnose renal injury at the earliest stages. A variety of methods have been employed to identify these biomarkers including transcriptomics, proteomics, metabolomics, lipidomics, and gene arrays. Currently, several candidate biomarkers have been identified and studied in different renal injury states. These include kidney injury molecule-1 (KIM-1), neutrophil gelatinase-associated lipocalin (NGAL), interleukin (IL)-18, and fatty-acid binding proteins (FABPs). This review will highlight the current state of knowledge of these biomarkers as well as the limitation of these biomarkers in the early diagnosis of renal injury.
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Affiliation(s)
- Mitchell H Rosner
- Division of Nephrology, University of Virginia Health System, Charlottesville, Virginia 22908, USA.
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10
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Ayedy SB, Gonzales J, Foglietti MJ, Percheron F, Bernard M. On Some Glycosidases (β-D-Mannosidase, α-L-Fucosidase, N-Acetyl- β-D-Glucosaminidase) of Human Seminal Plasma/Über einige Glykosidase-Aktivitäten (β-D-Mannosidase, α-L-Fukosidase und N-acetyl-β-D-Glukosaminidase) des menschlichen Spermaplasmas. Andrologia 2009. [DOI: 10.1111/j.1439-0272.1989.tb02441.x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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11
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Rohollah H, Dehpour A, Rad M, Rankohi K. AN IMPROVED METHOD FOR EVALUATION OF NEPHROTOXICITY BY ASSAY OF URINARY beta N -ACETYL--D-GLUCOSAMINIDASE (NAG) ACTIVITY. ACTA ACUST UNITED AC 2008. [DOI: 10.1080/105172397243132] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
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Abstract
Acute kidney injury (AKI) is a common condition with a high risk of death. The standard metrics used to define and monitor the progression of AKI, such as serum creatinine and blood urea nitrogen levels, are insensitive, nonspecific, and change significantly only after significant kidney injury and then with a substantial time delay. This delay in diagnosis not only prevents timely patient management decisions, including administration of putative therapeutic agents, but also significantly affects the preclinical evaluation of toxicity thereby allowing potentially nephrotoxic drug candidates to pass the preclinical safety criteria only to be found to be clinically nephrotoxic with great human costs. Studies to establish effective therapies for AKI will be greatly facilitated by two factors: (a) development of sensitive, specific, and reliable biomarkers for early diagnosis/prognosis of AKI in preclinical and clinical studies, and (b) development and validation of high-throughput innovative technologies that allow rapid multiplexed detection of multiple markers at the bedside.
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Affiliation(s)
- Vishal S Vaidya
- Renal Division, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, USA.
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13
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Ferguson MA, Vaidya V, Bonventre JV. Biomarkers of nephrotoxic acute kidney injury. Toxicology 2008; 245:182-93. [PMID: 18294749 PMCID: PMC4038970 DOI: 10.1016/j.tox.2007.12.024] [Citation(s) in RCA: 200] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2007] [Accepted: 12/14/2007] [Indexed: 12/15/2022]
Abstract
Acute kidney injury (AKI) is a common condition with significant associated morbidity and mortality. Epidemiologic data suggest that a significant proportion of AKI cases is at least partially attributable to nephrotoxin exposure. This is not surprising given intrinsic renal susceptibility to toxicant-induced injury, a consequence of the unique physiologic and biochemical properties of the normally functioning kidney. A number of pathophysiologic mechanisms have been identified that mediate toxic effects on the kidney, resulting in a variety of clinical syndromes ranging from subtle changes in tubular function to fulminant renal failure. Unfortunately, standard metrics used to diagnose and monitor kidney injury, such as blood urea nitrogen and serum creatinine, are insensitive and nonspecific, resulting in delayed diagnosis and intervention. Considerable effort has been made to identify biomarkers that will allow the earlier diagnosis of AKI. Further characterization of these candidate biomarkers will clarify their utility in the setting of acute nephrotoxicity, define new diagnostic and prognostic paradigms for kidney injury, facilitate clinical trials, and lead to novel effective therapies.
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Affiliation(s)
- Michael A. Ferguson
- Fellow in Pediatric Nephrology, Division of Nephrology, Children’s Hospital Boston, Hunnewell 319, Boston, MA 02115, Tel: 617-355-6129, Fax: 617-730-0569,
| | - Vishal Vaidya
- Instructor, Harvard Medical School, Renal Division, Harvard Institutes of Medicine, Room 576, 4 Blackfan Circle, Boston, MA 02115, Tel: 617-525-5974, Fax: 617-525-5965,
| | - Joseph V. Bonventre
- Director, Renal Division, Brigham and Women’s Hospital, Robert H. Ebert Professor of Medicine, Harvard Medical School, Harvard Institutes of Medicine, Room 576, 4 Blackfan Circle, Boston, MA 02115, Tel: 617-525-5969, Fax: 617-525-5965,
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Abstract
Acute kidney injury is a common condition in hospitalized patients with significant associated morbidity and mortality. Although impressive progress has been made in the understanding of the molecular and biochemical mechanisms of kidney injury, the ability to effectively treat and thus impact on the outcomes of acute kidney injury has been disappointing. One of the major reasons for this has been the reliance on current measures of renal dysfunction, such as serum creatinine and blood urea nitrogen, which are insensitive to small changes in renal function and subtle signs of kidney injury. This insensitivity of commonly used biomarkers of renal dysfunction not only prevents timely diagnosis and estimation of injury severity, but also delays administration of putative therapeutic agents. A number of serum and urinary proteins have been identified that may herald acute kidney injury prior to a rise in serum creatinine. Further characterization of these candidate biomarkers will clarify their utility and define new diagnostic and prognostic paradigms for acute kidney injury, facilitate clinical trials and lead to novel effective therapies.
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Affiliation(s)
- Mitchell H Rosner
- University of Virginia Health System, Division of Nephrology, Box 800133, Charlottesville, VA 22908, USA
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Oláh AV, Price RG, Csáthy L, Országh E, Oláh E, Varga J. Age dependence of serum β-N-acetylhexosaminidase (NAG) activity. ACTA ACUST UNITED AC 2004; 42:305-6. [PMID: 15080564 DOI: 10.1515/cclm.2004.055] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
AbstractSerum N-acetyl-β-D-glucosaminidase (NAG; EC 3.2.1.30) is a hexosaminidase and may be a predictor of vascular injury, e.g., in infant respiratory distress syndrome, pneumonia, broncho-pulmonary dysplasia and necrotizing enterocolitis. To estimate the new diagnostic prospects we have modified our urinary NAG assay. In this sensitive colorimetric micro-assay, VRA-GlcNAc was used as a substrate. In the present study the age dependence of serum NAG activity was investigated in newborn babies, infants (1–24 months), children (2–18 years) and adults (19–80 years). Serum NAG activity was found to be age-dependent; it is higher in early childhood (11–59 U/l) but decreases to a constant value at the age of 1–2 years. After the age of 2 years it is similar to adults' NAG (10–30 U/l). In pediatrics age-matched reference ranges must be taken into consideration.
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Affiliation(s)
- Anna V Oláh
- Department of Clinical Biochemistry and Molecular Pathology, University of Debrecen, Medical and Health Science Center, Debrecen, Hungary.
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16
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Pérez LF, Tutor JC. Assay of beta-N-acetylhexosaminidase isoenzymes in urine by means of determination of their activation energy without removing endogenous low-molecular-mass components. Clin Chim Acta 1998; 277:39-49. [PMID: 9776044 DOI: 10.1016/s0009-8981(98)00113-2] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/09/2023]
Abstract
The determination of the activation energy of beta-N-acetylhexosaminidase (Hex, EC 3.2.1.52), using 3,3'-dichlorophenylsulfonphthaleinyl-N-acetyl-beta-D-glucosaminide as substrate, allows its isoenzyme composition to be evaluated in different biological specimens. However, in the analysis of urine samples, it is necessary first to remove the endogenous low-molecular-mass components, as these provoke an over-estimation of the activation energy of the Hex and, consequently, of the relative proportion of Hex B isoenzyme. The study of this interference has allowed urea to be characterised as the only urinary metabolite that is responsible, and to establish a mathematical expression for the correction, in relation to the endogenous urea concentration, of the activation energy of the Hex obtained experimentally in samples of native urine. The results thus obtained for the isoenzyme composition of urinary Hex are similar to those found using an electrophoretic separation procedure.
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Affiliation(s)
- L F Pérez
- Laboratorio Central, Hospital General de Galicia-Clínico Universitario, Santiago de Compostela, Spain
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17
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Horsch M, Mayer C, Sennhauser U, Rast DM. Beta-N-acetylhexosaminidase: a target for the design of antifungal agents. Pharmacol Ther 1997; 76:187-218. [PMID: 9535180 DOI: 10.1016/s0163-7258(97)00110-1] [Citation(s) in RCA: 72] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
This review provides biochemical, analytical, and biological background information relating to beta-N-acetylhexosaminidase (HexNAc'ase; EC 3.2.1.52) as an emerging target for the design of low-molecular-weight antifungals. The article includes the following: (1) a biochemical description of HexNAc'ase (reaction catalyzed, nomenclature, and mechanism of action) that sets it apart from other, similar enzymes; (2) an overview and a critical evaluation of methods to assay the enzyme, including in crude extracts (photo- and fluorometric procedures with model substrates; HPLC/pulsed amperometric detection of N-acetylglucosamine and chito-oligomers; end-point vs. rate measurements); (3) a summary of some general characteristics of HexNAc'ases from fungi and organisms of other types (Km values, substrate preference, and glycoconjugation); (4) an hypothesis of a specific target function of wall-associated HexNAc'ase (a component of the assembly of surface-located enzymes effecting a continuous turnover and remodelling of the wall fabric through its combined hydrolytic and transglycosylating activities, and a mediator enzyme acting in concert with chitinase and chitin synthase to provide for the controlled lysis and synthesis of chitin during growth); (5) a tabulation of the structural formulae of reaction-based HexNAc'ase inhibitors with Ki values < or = 100 microM (some of them representing transition state mimics that could serve as leads for the development of new antifungals); and (6) an outline of approaches towards the establishment of a three-dimensional model of HexNAc'ase suitable for a truly rational design of antimycotics as well as agricultural fungicides.
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Affiliation(s)
- M Horsch
- Plant Biology Department, University of Zürich, Switzerland
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19
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Sánchez-Bernal C, Martín-González A, Cabezas JA, Villar E, Pérez-González N. Age-related excretion of six glycosidases in rat urine. Mech Ageing Dev 1992; 66:121-9. [PMID: 1365839 DOI: 10.1016/0047-6374(92)90130-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
The activity of beta-N-acetylglucosaminidase (NAG), beta-galactosidase, alpha-L-fucosidase, beta-glucuronidase, beta-glucosidase and alpha-mannosidase was determined in the urine of rats at progressive ages from newborn to old animals. The age-dependence of urinary creatinine, protein and pH values was also studied. Enzyme activity, related to urinary creatinine, was significantly higher in the newborn group than other ages. The excretion of NAG increased significantly in adult rats (3-6 months old) compared to young rats (1 month old). Most of the enzyme activities were diminished in old rats (25 months old). Increased proteinuria and creatinine excretion were observed in rats since 3 months of age. Age-related differences among enzyme activities therefore should be considered when these urinary glycosidases are to be studied in rats.
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Affiliation(s)
- C Sánchez-Bernal
- Department of Biochemistry and Molecular Biology, Faculty of Biology of Salamanca, Spain
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20
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Tasset C, Preat V, Bernard A, Roland M. Comparison of nephrotoxicities of different polyoxyethyleneglycol formulations of amphotericin B in rats. Antimicrob Agents Chemother 1992; 36:1525-31. [PMID: 1510450 PMCID: PMC191615 DOI: 10.1128/aac.36.7.1525] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
The aim of the present study was to assess whether amphotericin B (AmB)-Myrj 59, AmB-polyoxyethyleneglycol 24 cholesterol (PC), and AmB-Synperonic A50 (SA50) were less nephrotoxic than AmB-deoxycholate (DC). Rats were treated with the different AmB formulations (10 mg/kg of body weight) intraperitoneally or with the surfactants alone. A group of control rats receiving the vehicle was also examined. After 6 days of daily intraperitoneal injections of AmB-DC, decreased body weight and glomerular filtration rate as well as increased degree of diuresis, uremia, microalbuminuria, and N-acetyl-beta-D-glucosaminidase excretion in urine were noted. Urinary excretion of potassium and sodium was also decreased in AmB-DC-treated rats. Most of these effects were more pronounced with AmB-PC and AmB-SA50. In contrast, AmB-Myrj 59 was less nephrotoxic than AmB-DC. Indeed, after 6 days of treatment with AmB-Myrj 59, the natriuria, kaliuria, albuminuria, and glomerular filtration rates were unchanged compared with those of controls. Moreover, the body weight loss and uremia increase of the rats treated by AmB-Myrj 59 were less than those of the rats treated with the commercial preparation. Among the surfactants, only PC was toxic for the rats. The intrinsic toxicity of PC and the higher systemic exposure to AmB could contribute to increased toxicities of AmB-PC and AmB-SA50, respectively. AmB-Myrj 59 was less nephrotoxic than AmB-DC at equivalent areas under the plasma concentration-time curves. These preliminary results suggest that this formulation could be a good alternative to the commercial product.
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Affiliation(s)
- C Tasset
- Laboratoire de Pharmacie Galénique, Université Catholique de Louvain, Brussels, Belgium
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21
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Pócsi I, Csáthy L, Oláh VA, Price RG. Assay of N-acetyl-beta-D-glucosaminidase in urine from neonates: comparison of two new colorimetric methods using MNP-GlcNAc and VRA-GlcNAc as substrates. Ann Clin Biochem 1992; 29 ( Pt 3):292-5. [PMID: 1610104 DOI: 10.1177/000456329202900307] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
The NAG activity present in urine from newborn babies was assayed using two colorimetric procedures with either MNP-GlcNAc or VRA-GlcNAc as substrate and compared with data obtained with the well established PNP-GlcNAc procedure. Both new assays were easy to perform and reproducible. The MNP-GlcNAc method has the advantage that it is now available as a kit; however, the VRA-GlcNAc procedure is more sensitive. NAG activity, creatinine concentration and NAG-index values were determined in normal neonates and within-run imprecision calculated. Excellent correlations were found between MNP-GlcNAc-ase and VRA-GlcNAc-ase indices (r = 0.984) and between PNP-GlcNAc-ase and VRA-GlcNAc-ase indices (r = 0.952). When low molecular weight urinary components were removed by gel filtration no significant change in VRA-GlcNAc-ase activity was observed.
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Affiliation(s)
- I Pócsi
- Institute of Biochemistry, Lajos Kossuth University, Debrecen, Hungary
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22
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Tubular function, diagnostic markers. Clin Chem Lab Med 1992. [DOI: 10.1515/cclm.1992.30.10.683] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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23
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Beukes HA, Oosthuizen MM, Lambrechts H, Myburgh JA, Litthauer D, Naude RJ. Properties of the isoenzyme forms A-1, A-2 and B of N-acetyl-beta-D-glucosaminidase purified from baboon kidneys. THE INTERNATIONAL JOURNAL OF BIOCHEMISTRY 1991; 23:239-51. [PMID: 1999268 DOI: 10.1016/0020-711x(91)90197-u] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Three forms of N-acetyl-beta-D-glucosaminidase (NAG: A, B and I) were separated from baboon kidney using Con A-Sepharose and DEAE-Trisacryl chromatography. 2. The A form was further purified into two forms A-1 and A-2 using hydroxylapatite chromatography and anodic PAGE. Both were homogeneous on SDS-PAGE and anodic PAGE but microheterogeneous on PAG-IEF, which could be eliminated by prior treatment with endoglycosidase H or glycopeptidase F. 3. The carbohydrate content accounted for some of this microheterogeneity since it varied from 31 for A-1 to 17% for A-2 and the sialic acid was 6 and 1%. Deamidation may also contribute since the acidic amino acids (29 mol%) and ammonia were high following acid hydrolysis. 4. The mol. wt for A-1, determined by SDS-PAGE, was 52.1 K. 5. The pH optimum was 4.55 and the pI4.97. 6. The optimum temperature for NAG A and B was 50 degrees and 42 degrees C, but B retained more activity above 55 degrees C. 7. The Km for N-acetyl-beta-D-glucosamine and -galactosamine for both isoforms was 0.497 and 0.627 mM respectively. 8. Several ions were found to be uncompetitive inhibitors. Ag+ and Pb2+ were the most potent having Ki values of 3.6 and 8.5 mM respectively. Acetate acted as a competitive inhibitor.
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Affiliation(s)
- H A Beukes
- Department of Surgery, University of Witwatersrand, Johannesburg, South Africa
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Sánchez-Bernal C, Martín-Barrientos J, Rodríguez-Hernández JA, Cabezas JA. N-acetyl-beta-D-hexosaminidase A from rat urine: partial purification and characterization. Biochimie 1988; 70:227-36. [PMID: 2969264 DOI: 10.1016/0300-9084(88)90065-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
N-Acetyl-beta-D-hexosaminidase A was purified from rat urine by ion-exchange chromatography on DEAE-cellulose, followed by concanavalin A chromatography, and finally by chromatography on 2-acetamido-N-(epsilon-aminocaproyl)-2-deoxy-beta-glucosylamine-Se pharose 4B. The enzyme was purified 482-fold with a yield of about 7%. The optimal pH was 4.5 for N-acetyl-glucosaminidase activity and 4.0-4.5 for N-acetylgalactosaminidase activity. The enzyme was heat-labile and stable from pH 4.5 to pH 7.0 but it was very unstable at lower pH values. Km values were 0.55 mM and 0.059 mM, respectively. The glycoprotein nature of the enzyme was deduced from its behavior on concanavalin A. The effect of some carbohydrates and ionic compounds on the activities of the enzyme was studied. When N-acetyl-D-glucosaminolactone and N-acetyl-D-galactosaminolactone were used as inhibitors, Ki values were also calculated.
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Affiliation(s)
- C Sánchez-Bernal
- Department of Biochemistry, Faculty of Biology, University of Salamanca, Spain
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