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Brovedan MA, Molinas SM, Pisani GB, Monasterolo LA, Trumper L. Glutamine protection in an experimental model of acetaminophen nephrotoxicity. Can J Physiol Pharmacol 2018; 96:366-371. [DOI: 10.1139/cjpp-2017-0423] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Acetaminophen (APAP) is a widely prescribed analgesic and antipyretic drug. In the present work, we studied the effects of glutamine (Gln) in an in vivo model of APAP-induced nephrotoxicity in male Wistar rats. Renal function, histological characteristics, and Na+,K+-ATPase cortical abundance and distribution were analyzed. The appearance of HSP70 and actin in urine was also evaluated. Myeloperoxidase (MPO) activity in cortical tissue was measured as an index of the inflammatory response. Gln administration 30 min before APAP protected from the renal functional and histological damage promoted by APAP. Rats that received the dual treatment Gln and APAP (Gln/APAP) showed the same level of Na+,K+-ATPase cortical induction as APAP-treated animals, but the enzyme maintained its normal basolateral localization. HSP70 abundance was increased up to the same level in the Gln, APAP, and Gln/APAP groups. Urinary HSP70 and actin were detected only in the APAP-treated animals, reinforcing the protection of renal tubular integrity afforded by the Gln pretreatment. Gln pretreatment also protected from the increment in MPO activity promoted by APAP. Our results support the idea that Gln pretreatment could be a therapeutic option to prevent APAP-induced renal injury.
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Affiliation(s)
- Marco A. Brovedan
- Pharmacology, Faculty of Biochemical and Pharmaceutical Sciences, National University of Rosario, Suipacha 531, 2000 Rosario, Argentina
| | - Sara M. Molinas
- Pharmacology, Faculty of Biochemical and Pharmaceutical Sciences, National University of Rosario, Suipacha 531, 2000 Rosario, Argentina
- National Council of Scientific and Technical Research (CONICET)
| | - Gerardo B. Pisani
- Morphology, Faculty of Biochemical and Pharmaceutical Sciences, National University of Rosario, Suipacha 531, 2000 Rosario, Argentina
| | - Liliana A. Monasterolo
- Pharmacology, Faculty of Biochemical and Pharmaceutical Sciences, National University of Rosario, Suipacha 531, 2000 Rosario, Argentina
- National Council of Scientific and Technical Research (CONICET)
| | - Laura Trumper
- Pharmacology, Faculty of Biochemical and Pharmaceutical Sciences, National University of Rosario, Suipacha 531, 2000 Rosario, Argentina
- Research Council of the National University of Rosario (CIC-UNR)
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Carvalho NR, Tassi CC, Dobraschinski F, Amaral GP, Zemolin AP, Golombieski RM, Dalla Corte CL, Franco JL, Mauriz JL, González-Gallego J, Soares FA. Reversal of bioenergetics dysfunction by diphenyl diselenide is critical to protection against the acetaminophen-induced acute liver failure. Life Sci 2017; 180:42-50. [DOI: 10.1016/j.lfs.2017.05.012] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2017] [Revised: 04/29/2017] [Accepted: 05/10/2017] [Indexed: 02/05/2023]
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Yilmaz A, Yildirim ZY, Emre S, Gedikbasi A, Yildirim T, Dirican A, Ucar EO. Urine heat shock protein 70 levels as a marker of urinary tract infection in children. Pediatr Nephrol 2016; 31:1469-76. [PMID: 27011219 DOI: 10.1007/s00467-016-3361-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/21/2015] [Revised: 02/27/2016] [Accepted: 03/01/2016] [Indexed: 10/22/2022]
Abstract
BACKGROUND Heat shock proteins (HSPs) are a multi-family group of proteins which are upregulated by the cell in response to exposure to hazardous (stress) factors, including infectious agents, to prevent changes in protein structure. The aim of our study was to assess whether urine levels of the 70-kDa family of HSPs (HSP70s) increase in children with urinary tract infection (UTI) and to determine the optimal urine (u) HSP70 cut-off level to predict UTI in children. METHODS Forty patients with symptomatic UTI (UTI group), 30 healthy children (control group), 21 asymptomatic patients with proven bacterial contamination in their urine culture (contamination group) and 30 patients with fever caused by other infections (non-UTI infection group) were enrolled in the study. Random urine samples were obtained for measurement of HSP70 and creatinine (Cr) from all groups. Urine was collected prior to the treatment of UTI at the time of presentation and after treatment. Urine HSP70 levels were measured by enzyme-linked immunosorbent analysis. A dimercaptosuccinic acid (DMSA) scan was performed at 5-7 days after presentation in UTI group to distinguish patients with acute pyelonephritis from those with cystitis; based on this scan, no patients had acute pyelonephritis. Patients were classified with pyelonephritis in the presence of all of the following signs: axillary fever of ≥39 °C, leukocytosis and positivity for C-reactive protein. RESULTS The mean urine HSP70:Cr ratio (uHSP70/Cr) prior to treatment was significantly higher in the UTI group (449.86 ± 194.33 pg/mg) than in the control, contamination and non-UTI infection groups (39.93 ± 47.61, 32.43 ± 9.09 and 45.14 ± 19.76, respectively; p = 0.0001). Using a cut-off of 158 pg/mg uHSP70/Cr for the prediction of UTI, the sensitivity and specificity of the assay were 100 and 100 %, respectively (area under the time-concentration curve = 1). The uHSP70/Cr was highest in the patients with clinical pyelonephritis (p = 0.001). Mean uHSP70/Cr after treatment decreased to 60.68 ± 51.11 pg/mg in UTI group (p = 0 .0001). CONCLUSIONS Our findings suggest that elevated uHSP70/Cr may be a useful biomarker for the prediction of UTI in children, with a high sensitivity and specificity, and that they may help to distinguish UTI from other infections as well as bacterial contamination of the urine.
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Affiliation(s)
- Alev Yilmaz
- Istanbul Faculty of Medicine, Pediatric Nephrology Department, Istanbul University, 34390, Capa, Istanbul, Turkey
| | - Zeynep Yuruk Yildirim
- Istanbul Faculty of Medicine, Pediatric Nephrology Department, Istanbul University, 34390, Capa, Istanbul, Turkey.
| | - Sevinc Emre
- Istanbul Faculty of Medicine, Pediatric Nephrology Department, Istanbul University, 34390, Capa, Istanbul, Turkey
| | - Asuman Gedikbasi
- Biochemistry Department, Bakirkoy Dr. Sadi Konuk Training and Research Hospital, Istanbul, Turkey
| | - Tarik Yildirim
- Pediatrics Department, Kanuni Sultan Süleyman Training and Research Hospital, Istanbul, Turkey
| | - Ahmet Dirican
- Biostatistics Department, Istanbul Faculty of Medicine, Istanbul University, Istanbul, Turkey
| | - Evren Onay Ucar
- Department of Molecular Biology & Genetics, Faculty of Science, Istanbul University, Istanbul, Turkey
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Yilmaz A, Gedikbasi A, Yuruk Yildirim Z, Pehlivanoglu C, Seker B, Sucu A, Bundak R, Emre S. Higher urine heat shock protein 70/creatinine ratio in type 1 diabetes mellitus. Ren Fail 2016; 38:404-10. [PMID: 26820050 DOI: 10.3109/0886022x.2015.1136893] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
Insidious progressive renal damage caused by type 1 diabetes mellitus (T1DM) begins in childhood before it becomes manifest in adult ages. Heat shock proteins (HSPs) regulate the cell response to any hazardous factors to prevent cell structure. The aim of the study is to determine whether urine levels of HSPs increase in diabetic children with time and indicate a progressive renal injury in T1DM. Thirty-three patients with T1DM and 24 healthy children were enrolled in the study. Renal function was normal in all patients. Urine levels of HSP27, HSP40, HSP60, HSP70, and HSP90 were measured by enzyme-linked immunosorbent assay at two consecutive years (2012 and 2013). The results were evaluated as urine HSP/creatinine ratios (uHSP/Cr). Mean urine HSP27/Cr, HSP40/Cr, HSP60/Cr, HSP70/Cr, HSP90/Cr in patient group were significantly higher than in controls in 2012 (uHSP27/Cr 460.12 ± 217.64 versus 270.02 ± 136.83 pg/mgCr; uHSP40/Cr 180.89 ± 118.59 versus 99.44 ± 62.49 pg/mgCr; uHSP60/Cr 114.40 ± 64.91 versus 70.50 ± 43.70 pg/mgCr; uHSP70/Cr 41.17 ± 28.42 versus 16.47 ± 7.32 pg/mgCr; uHSP90/Cr 175.64 ± 102.22 versus 107.61 ± 75.85 pg/mgCr) (p < 0.05). In 2013, uHSP70/Cr level increased significantly (51.08 ± 27.72 pg/mgCr; p = 0.001), whereas uHSP60/Cr level decreased and uHSP27/Cr, uHSP40/Cr, uHSP90/Cr levels remained stable (p > 0.05). Area under the curve (AUC) for uHSP70/Cr (0.957) was significantly higher than the others. Using a cutoff 22.59 pg/mgCr for uHSP70/Cr to predict of diabetic damage, sensitivity and specificity were 85% and 96%, respectively. Our results suggest that uHSP70/Cr increases over time and may indicate early phases of progressive kidney damage in diabetic children.
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Affiliation(s)
- Alev Yilmaz
- a Pediatric Nephrology Department, Istanbul Medical Faculty , Istanbul University , Istanbul , Turkey
| | - Asuman Gedikbasi
- b Biochemistry Department , Bakirkoy Dr. Sadi Konuk Training and Research Hospital , Istanbul , Turkey
| | - Zeynep Yuruk Yildirim
- a Pediatric Nephrology Department, Istanbul Medical Faculty , Istanbul University , Istanbul , Turkey
| | - Cemile Pehlivanoglu
- a Pediatric Nephrology Department, Istanbul Medical Faculty , Istanbul University , Istanbul , Turkey
| | - Basak Seker
- c Pediatrics Department, Istanbul Medical Faculty , Istanbul University , Istanbul , Turkey
| | - Aysegul Sucu
- a Pediatric Nephrology Department, Istanbul Medical Faculty , Istanbul University , Istanbul , Turkey
| | - Ruveyde Bundak
- d Pediatric Endocrinology Department, Istanbul Medical Faculty , Istanbul University , Istanbul , Turkey
| | - Sevinc Emre
- a Pediatric Nephrology Department, Istanbul Medical Faculty , Istanbul University , Istanbul , Turkey
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Barrera-Chimal J, Bobadilla NA. Are recently reported biomarkers helpful for early and accurate diagnosis of acute kidney injury? Biomarkers 2012; 17:385-93. [DOI: 10.3109/1354750x.2012.680070] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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Barrera-Chimal J, Pérez-Villalva R, Cortés-González C, Ojeda-Cervantes M, Gamba G, Morales-Buenrostro LE, Bobadilla NA. Hsp72 is an early and sensitive biomarker to detect acute kidney injury. EMBO Mol Med 2010; 3:5-20. [PMID: 21204265 PMCID: PMC3401998 DOI: 10.1002/emmm.201000105] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2010] [Revised: 11/01/2010] [Accepted: 11/08/2010] [Indexed: 12/22/2022] Open
Abstract
This study was designed to assess whether heat shock protein Hsp72 is an early and sensitive biomarker of acute kidney injury (AKI) as well as to monitor a renoprotective strategy. Seventy-two Wistar rats were divided into six groups: sham-operated and rats subjected to 10, 20, 30, 45 and 60 min of bilateral ischemia (I) and 24 h of reperfusion (R). Different times of reperfusion (3, 6, 9, 12, 18, 24, 48, 72, 96 and 120 h) were also evaluated in 30 other rats subjected to 30 min of ischemia. Hsp72 messenger RNA (mRNA) and protein levels were determined in both kidney and urine. Hsp72-specificity as a biomarker to assess the success of a renoprotective intervention was evaluated in rats treated with different doses of spironolactone before I/R. Renal Hsp72 mRNA and protein, as well as urinary Hsp72 levels, gradually increased relative to the extent of renal injury induced by different periods of ischemia quantified by histomorphometry as a benchmark of kidney damage. Urinary Hsp72 increased significantly after 3 h and continued rising until 18 h, followed by restoration after 120 h of reperfusion in accord with histopathological findings. Spironolactone renoprotection was associated with normalization of urinary Hsp72 levels. Accordingly, urinary Hsp72 was significantly increased in patients with clinical AKI before serum creatinine elevation. Our results show that urinary Hsp72 is a useful biomarker for early detection and stratification of AKI. In addition, urinary Hsp72 levels are sensitive enough to monitor therapeutic interventions and the degree of tubular recovery following an I/R insult.
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Affiliation(s)
- Jonatan Barrera-Chimal
- Molecular Physiology Unit, Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, Mexico City, Mexico
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