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Tavares G, Venturini G, Padilha K, Zatz R, Pereira AC, Thadhani RI, Rhee EP, Titan SMO. 1,5-Anhydroglucitol predicts CKD progression in macroalbuminuric diabetic kidney disease: results from non-targeted metabolomics. Metabolomics 2018; 14:39. [PMID: 30830377 DOI: 10.1007/s11306-018-1337-9] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/31/2017] [Accepted: 02/06/2018] [Indexed: 11/28/2022]
Abstract
INTRODUCTION Metabolomics allows exploration of novel biomarkers and provides insights on metabolic pathways associated with disease. To date, metabolomics studies on CKD have been largely limited to Caucasian populations and have mostly examined surrogate end points. OBJECTIVE In this study, we evaluated the role of metabolites in predicting a primary outcome defined as dialysis need, doubling of serum creatinine or death in Brazilian macroalbuminuric DKD patients. METHODS Non-targeted metabolomics was performed on plasma from 56 DKD patients. Technical triplicates were done. Metabolites were identified using Agilent Fiehn GC/MS Metabolomics and NIST libraries (Agilent MassHunter Work-station Quantitative Analysis, version B.06.00). After data cleaning, 186 metabolites were left for analyses. RESULTS During a median follow-up time of 2.5 years, the PO occurred in 17 patients (30.3%). In non-parametric testing, 13 metabolites were associated with the PO. In univariate Cox regression, only 1,5-anhydroglucitol (HR 0.10; 95% CI 0.01-0.63, p = .01), norvaline and L-aspartic acid were associated with the PO. After adjustment for baseline renal function, 1,5-anhydroglucitol (HR 0.10; 95% CI 0.02-0.63, p = .01), norvaline (HR 0.01; 95% CI 0.001-0.4, p = .01) and aspartic acid (HR 0.12; 95% CI 0.02-0.64, p = .01) remained significantly and inversely associated with the PO. CONCLUSION Our results show that lower levels of 1,5-anhydroglucitol, norvaline and L-aspartic acid are associated with progression of macroalbuminuric DKD. While norvaline and L-aspartic acid point to interesting metabolic pathways, 1,5-anhydroglucitol is of particular interest since it has been previously shown to be associated with incident CKD. This inverse biomarker of hyperglycemia should be further explored as a new tool in DKD.
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Affiliation(s)
- Gesiane Tavares
- Nephrology Division, University of São Paulo Medical School, Av Dr Enéas de Carvalho Aguiar, 255, São Paulo, SP, 05403-000, Brazil.
| | - Gabriela Venturini
- Laboratory of Genetics and Molecular Cardiology, Heart Institute, University of São Paulo Medical School, São Paulo, SP, Brazil
| | - Kallyandra Padilha
- Laboratory of Genetics and Molecular Cardiology, Heart Institute, University of São Paulo Medical School, São Paulo, SP, Brazil
| | - Roberto Zatz
- Nephrology Division, University of São Paulo Medical School, Av Dr Enéas de Carvalho Aguiar, 255, São Paulo, SP, 05403-000, Brazil
| | - Alexandre C Pereira
- Laboratory of Genetics and Molecular Cardiology, Heart Institute, University of São Paulo Medical School, São Paulo, SP, Brazil
| | - Ravi I Thadhani
- Division of Nephrology, Department of Medicine, Massachusetts General Hospital, Boston, MA, USA
- Cedars-Sinai Medical Center, Los Angeles, CA, USA
| | - Eugene P Rhee
- Division of Nephrology, Department of Medicine, Massachusetts General Hospital, Boston, MA, USA
- Division of Endocrinology, Department of Medicine, Massachusetts General Hospital, Boston, MA, USA
| | - Silvia M O Titan
- Nephrology Division, University of São Paulo Medical School, Av Dr Enéas de Carvalho Aguiar, 255, São Paulo, SP, 05403-000, Brazil
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Aminlari M, Shahbazkia HR, Esfandiari A. Distribution of arginase in tissues of cat (Felis catus). J Feline Med Surg 2016; 9:133-9. [PMID: 17307007 DOI: 10.1016/j.jfms.2006.10.001] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/05/2006] [Indexed: 11/30/2022]
Abstract
Arginase (EC 3.5.3.1), the final enzyme in the urea cycle, catalyses the hydrolysis of L-arginine to L-ornithine and urea. High activity of this enzyme in the liver indicates its primary role in ammonia detoxification. However, its wide tissue distribution suggests that this enzyme might perform other functions besides hepatic ureagenesis. Although the distribution and properties of arginase from many tissues of human, laboratory animals and some domestic animals have been studied, little is known about the pattern of distribution and physiological roles of this enzyme in the cat. The purpose of this study was to examine and compare the distribution of arginase in different tissues of the cat. A selection of tissue samples was assayed for arginase by the diacetyl monoxime method of determination of enzymatically formed urea. The protein content of tissues and enzymatic activities were calculated as units per gram tissue and units per milligram protein of the tissue. Results showed that the liver was the richest source of arginase followed by the oesophageal and tongue mucosal layers. Significant activity of this enzyme was found in the mucosa of the small intestine, kidney cortex, lung, testis and ovary. The results of this study will be discussed in terms of the involvement of arginase in several biochemical and physiological functions in this species.
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Affiliation(s)
- Mahmoud Aminlari
- Department of Biochemistry, School of Veterinary Medicine, Shiraz University, Shiraz 71345, Iran.
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Erbaş H, Bal O, Çakır E. Effect of rosuvastatin on arginase enzyme activity and polyamine production in experimental breast cancer. Balkan Med J 2015; 32:89-95. [PMID: 25759778 DOI: 10.5152/balkanmedj.2015.15611] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2014] [Accepted: 10/08/2014] [Indexed: 11/22/2022] Open
Abstract
BACKGROUND Breast cancer is the most common malignant tumour of women around the world. As a key enzyme of the urea cycle, arginase leads to the formation of urea and ornithine from L-arginine. In the patients with several different cancers, arginase has been found to be higher and reported to be a useful biological marker. AIMS The aim of this study was to investigate the effect of rosuvastatin on serum and cancer tissue arginase enzyme activity, and ornithine and polyamine (putrescine, spermidine, spermine) levels. STUDY DESIGN Animal experiment. METHODS In this study, 50 male Balb/c mice were used. Erchlich acid tumour cells were injected into the subcutaneous part of their left foot. The mice were divided into five groups: healthy control group, healthy treatment, tumour control, treatment 1 and treatment 2. Then, 1 mg/kg and 20 mg/kg doses of rosuvastatin were given intraperitoneally. Serum and tissue arginase enzyme activities and tissue ornithine levels were determined spectrophotometrically. HPLC measurement of polyamines were applied. RESULTS Increased serum arginase activity and polyamine levels were significantly decreased with rosuvastatin treatment. In the tumour tissue, arginase activity and ornithine levels were significantly decreased in treatment groups compared to the tumour group. Tissue polyamine levels also decreased with rosuvastatin treatment. CONCLUSION We suggest that rosuvastatin may have some protective effects on breast cancer development as it inhibits arginase enzyme activity and ornithine levels, precursors of polyamines, and also polyamine levels. This protective effect may be through the induction of nitric oxide (NO) production via nitric oxide synthase (NOS). As a promising anticancer agent, the net effects of rosuvastatin in this mechanism should be supported with more advanced studies and new parameters.
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Affiliation(s)
- Hakan Erbaş
- Department of Medical Biochemistry, Trakya University Faculty of Medicine, Edirne, Turkey
| | - Oğuz Bal
- Department of Medical Biochemistry, Trakya University Faculty of Medicine, Edirne, Turkey
| | - Erol Çakır
- Department of Medical Biochemistry, Trakya University Faculty of Medicine, Edirne, Turkey
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Ogino K, Murakami I, Wang DH, Tsukiyama Y, Takahashi H, Kubo M, Sakano N, Setiawan H, Bando M, Ohmoto Y. Evaluation of serum arginase I as an oxidative stress biomarker in a healthy Japanese population using a newly established ELISA. Clin Biochem 2013; 46:1717-22. [PMID: 24005081 DOI: 10.1016/j.clinbiochem.2013.08.012] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2013] [Revised: 08/21/2013] [Accepted: 08/26/2013] [Indexed: 11/26/2022]
Abstract
OBJECTIVE We reported previously that serum arginase I increased in asthmatic patients and was associated with oxidative stress in a small healthy population. However, the exact association of arginase I with oxidative stress is not known. The present study aimed to analyze the association of arginase I with oxidative stress in a larger healthy population by a newly established ELISA. DESIGN AND METHODS The new ELISA for the measurement of human arginase I was established by generating recombinant arginase I protein in human arginase I gene-transfected Escherichia coli via an ARG1 cDNA fragment-inserted vector and -specific antibody in rabbits. Serum arginase I was evaluated in a cross-sectional study on a healthy population (n=721) by comparing a commercial ELISA kit with the new ELISA. RESULTS The mean levels of serum arginase I were 20.3 ± 0.7 ng/mL and 4.7 ± 0.2 ng/mL using the commercial ELISA kit and the new ELISA, respectively. Arginase I was correlated with WBC, RBC, hs-CRP, 8-OHdG, HDL-c, ALT, and BMI. Logistic regression analysis showed independent positive associations of arginase I with WBC, RBC, and urinary 8-OHdG and inverse independent associations with serum insulin and age. The association of arginase I with hs-CRP was not independent. CONCLUSION The independent associations of arginase I with urinary 8-OHdG and serum insulin may reflect its involvement in oxidative stress and diabetes mellitus.
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Affiliation(s)
- Keiki Ogino
- Department of Public Health, Okayama University, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan.
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Aydogdu N, Erbas H, Atmaca G, Erten O, Kaymak K. Melatonin Reduces Nitric Oxide via Increasing Arginase in Rhabdomyolysis-Induced Acute Renal Failure in Rats. Ren Fail 2009; 28:435-40. [PMID: 16825094 DOI: 10.1080/08860220600683631] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022] Open
Abstract
Melatonin, the chief secretory product of the pineal gland, is a direct free radical scavenger. In addition to a direct scavenging effect on nitric oxide (NO), its inhibitory effect on nitric oxide synthase (NOS) activity has been also reported. L-arginine is the substrate for both NOS and arginase. It has been suggested that there is a competition between arginase and NOS and that they control each other's level. NO plays a crucial role in the pathogenesis of myoglobinuric acute renal failure (ARF). In this study, the authors aimed to investigate the effect of melatonin on arginase activity, ornithine, and NO levels on the myoglobinuric ARF formed by intramuscular (i.m.) injection of hypertonic glycerol. Forty rats were randomly divided into four groups. Rats in SHAM were given saline, and those in groups ARF, ARF-M5, and ARF-M10 were injected with glycerol (10 mL/kg) i.m. Concomitant and 24 hours after glycerol injection for the ARF-M5 and ARF-M10 groups, melatonin--5 mg/kg and 10 mg/kg, respectively--was administrated intraperitoneally. Forty-eight hours after the glycerol injection, kidneys of the rats were taken under anesthesia. Arginase activity, ornithine, and NO levels in the kidney tissue were determined. Melatonin had an increasing effect on kidney tissue arginase activities and ornithine levels while decreasing NO concentration. It is possible that besides the direct scavenging effect, the stimulatory effect of melatonin on arginase activity may result in an inhibition of NOS activity and, finally, a decrease in the kidney NO level.
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Affiliation(s)
- Nurettin Aydogdu
- Trakya University, Faculty of Medicine, Department of Physiology, Edirne, Turkey.
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Kashyap SR, Lara A, Zhang R, Park YM, DeFronzo RA. Insulin reduces plasma arginase activity in type 2 diabetic patients. Diabetes Care 2008; 31:134-9. [PMID: 17928367 PMCID: PMC3101496 DOI: 10.2337/dc07-1198] [Citation(s) in RCA: 85] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
OBJECTIVE We sought to determine whether dysregulation of arginine metabolism is related to insulin resistance and underlies impaired nitric oxide (NO) generation in type 2 diabetic patients. RESEARCH DESIGN AND METHODS We measured plasma arginase activity, arginine metabolites, and skeletal muscle NO synthase (NOS) activity in 12 type 2 diabetic and 10 age-/BMI-matched nondiabetic subjects before and following a 4-h euglycemic-hyperinsulinemic clamp with muscle biopsies. Arginine metabolites were determined by tandem mass spectroscopy. Arginase activity was determined by conversion of [(14)C] guanidoinoarginine to [(14)C] urea. RESULTS Glucose disposal (R(d)) was reduced by 50% in diabetic versus control subjects. NOS activity was fourfold reduced in the diabetic group (107 +/- 45 vs. 459 +/- 100 pmol x min(-1) x mg protein(-1); P < 0.05) and failed to increase with insulin. Plasma arginase activity was increased by 50% in the diabetic versus control group (0.48 +/- 0.11 vs. 0.32 +/- 0.12 micromol x ml(-1) x h(-1); P < 0.05) and markedly declined in diabetic subjects with 4-h insulin infusion (to 0.13 +/- 0.04 micromol x ml(-1) x h(-1) vs. basal; P < 0.05). In both groups collectively, plasma arginase activity correlated positively with fasting plasma glucose (R = 0.46, P < 0.05) and A1C levels (R = 0.51, P < 0.02) but not with R(d). CONCLUSIONS Plasma arginase activity is increased in type 2 diabetic subjects with impaired NOS activity, correlates with the degree of hyperglycemia, and is reduced by physiologic hyperinsulinemia. Elevated arginase activity may contribute to impaired NO generation in type 2 diabetes, and insulin may ameliorate this defect via reducing arginase activity.
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Affiliation(s)
- Sangeeta R Kashyap
- Department of Endocrinology, Diabetes and Metabolism, Cleveland Clinic, Cleveland, Ohio, USA.
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Ahmed SB, Fisher NDL, Hollenberg NK. Gender and the renal nitric oxide synthase system in healthy humans. Clin J Am Soc Nephrol 2007; 2:926-31. [PMID: 17702739 DOI: 10.2215/cjn.00110107] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
BACKGROUND AND OBJECTIVES It is widely known that men with kidney disease progress to ESRD at a much greater rate than do women. The mechanism for these gender differences is not clear, but reduced availability of nitric oxide is thought to contribute to the age-related decline in renal plasma flow observed in both healthy men and women. Animal models suggest that the renal vasculature of men may be significantly more dependent on nitric oxide than that of women. DESIGN, SETTING, PARTICIPANTS, & MEASUREMENTS Renal plasma flow response to the nonspecific nitric oxide synthase inhibitor nitro-L-arginine methyl ester (L-NAME) was measured by para-aminohippurate clearance technique in 21 healthy, normotensive (8 male, 13 female) individuals in balance on a high-salt diet. RESULTS There were striking differences between the genders in the renal hemodynamic response to L-NAME according to age, a difference that remained even after adjustment for other significant covariates. In men, the fall in renal plasma flow induced by L-NAME increased remarkably with increasing age. In women, there was no influence of age on the renovascular response to L-NAME. Neither age nor gender predicted the mean arterial pressure response to L-NAME. CONCLUSIONS The renal vasculature of men becomes more dependent on nitric oxide with age compared with that of women, suggesting that any renal disease that interferes with nitric oxide production may, over time, cause existent kidney damage to progress more quickly in men relative to women.
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Affiliation(s)
- Sofia B Ahmed
- Department of Medicine, University of Calgary, Calgary, Alberta, Canada.
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Ishii N, Ikenaga H, Carmines PK, Takada N, Okazaki T, Nagai T, Maeda T, Aoki Y, Saruta T, Katagiri M. Impact of angiotensin-converting enzyme inhibition on renal cortical nitrotyrosine content during increased extracellular glucose concentration. Clin Biochem 2006; 39:633-9. [PMID: 16630604 DOI: 10.1016/j.clinbiochem.2006.02.005] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2005] [Revised: 01/31/2006] [Accepted: 02/21/2006] [Indexed: 11/17/2022]
Abstract
OBJECTIVES Experiments evaluated the hypothesis that angiotensin-converting enzyme (ACE) inhibition suppresses hyperglycemia-induced nitrotyrosine (NT) production in the renal cortex. DESIGN AND METHODS Rats were untreated (UNTR, n = 6) or received the ACE inhibitor enalapril (20 mg/kg/day; ENAL, n = 6) for 2 weeks. Renal cortical slices were incubated for 90 min in media containing 5 (normal) or 20 mmol/L (high) glucose. Superoxide anion (O2*-) and nitrate + nitrite (NO(X)) levels were measured in the media. Superoxide dismutase (SOD) activity and NT content were measured in the tissue homogenate. RESULTS In the UNTR group, high glucose increased O2*- and NO(X) production by the renal cortex (P < 0.05 vs. normal glucose). Likewise, NT content and SOD activity of the renal cortex augmented (P < 0.05 vs. normal glucose). In the ENAL group, O2*- production and NT content were glucose-insensitive, but high glucose exerted an exaggerated impact on NO(X) production and SOD activity (P < 0.01 vs. UNTR in high glucose). CONCLUSION Accelerated NT content in the renal cortex during high-glucose conditions was prevented by ACE inhibitor treatment. It was suggested that, apart from its anti-hypertensive effect, the mechanism of suppressed NT degradation in the renal cortex by the ACE inhibitor enhances both O2*- degradation per se and antioxidative effects including SOD activation.
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Affiliation(s)
- Naohito Ishii
- Department of Clinical Physiology, Kitasato University School of Allied Health Sciences, 1-15-1 Kitasato, Sagamihara, Kanagawa 228-8555, Japan
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