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Hughes A, Guha C, Sluiter A, Himmelfarb J, Jauré A. Patient-Centered Research and Innovation in Nephrology. ADVANCES IN KIDNEY DISEASE AND HEALTH 2024; 31:52-67. [PMID: 38403395 DOI: 10.1053/j.akdh.2023.12.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/06/2023] [Revised: 12/07/2023] [Accepted: 12/11/2023] [Indexed: 02/27/2024]
Abstract
Patient involvement in research can improve the relevance of research, consequently enhancing the recruitment, retention, and uptake of interventions and policies impacting patient outcomes. Despite this, patients are not often involved in the design and conduct of research. The research agenda and innovations are frequently determined by the interest of health and industry professionals rather than proactively aligning with the priorities of patients. It is now being encouraged and recommended to engage patients in research priority setting to ensure interventions and trials report outcomes valuable to patients, moving away from a history of overlooking the outcomes that reflect the feel and function of patients. Involving patients ensures constant innovative research in nephrology, as this broader depth of evidence fortifies reliability and validity through knowledge gained from lived experience. Findings from such research can enhance clinical practice and strengthen decision-making and policy to support better outcomes. We aim to outline principles and strategies for patient involvement in research, including setting research priorities, identifying and designing interventions, selecting outcomes, and disseminating and translating research. Principles and strategies including engagement, education and training, empowerment, and connection and community provide guidance in patient involvement. There are increasing efforts to involve patients across all stages of research including setting research priorities. Efforts are rising to involve patients across all stages of research including priority setting, identifying and designing interventions, selecting outcomes, and dissemination and translation. Patient involvement throughout the research cycle drives innovative investigations ensuring funding, efforts, and resources are directed toward priorities of patients, contributing to catalyst advancements in care and outcomes.
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Affiliation(s)
- Anastasia Hughes
- Sydney School of Public Health, The University of Sydney, Sydney, Australia; Centre for Kidney Research, The Children's Hospital at Westmead, Sydney, Australia.
| | - Chandana Guha
- Sydney School of Public Health, The University of Sydney, Sydney, Australia; Centre for Kidney Research, The Children's Hospital at Westmead, Sydney, Australia
| | - Amanda Sluiter
- Sydney School of Public Health, The University of Sydney, Sydney, Australia; Centre for Kidney Research, The Children's Hospital at Westmead, Sydney, Australia
| | - Jonathan Himmelfarb
- Division of Nephrology, Department of Medicine, University of Washington, Seattle, Washington; Kidney Research Institute, Seattle, WA
| | - Allison Jauré
- Sydney School of Public Health, The University of Sydney, Sydney, Australia; Centre for Kidney Research, The Children's Hospital at Westmead, Sydney, Australia
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Fatima N, Ali R, Faisal T, Kulkarni K, Patel S, Hussain T. Macrophage angiotensin AT 2 receptor activation is protective against early phases of LPS-induced acute kidney injury. Am J Physiol Renal Physiol 2023; 325:F552-F563. [PMID: 37615049 PMCID: PMC10878726 DOI: 10.1152/ajprenal.00177.2022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2022] [Revised: 07/27/2023] [Accepted: 08/17/2023] [Indexed: 08/25/2023] Open
Abstract
Lipopolysaccharide (LPS)-induced acute kidney injury (AKI) is characterized by inflammation and infiltration of immune cells, mainly neutrophils and macrophages, and results in sudden renal dysfunction. Previously, we have reported the anti-inflammatory and renoprotective role of the angiotensin II type 2 receptor (AT2R), expressed on kidney tubular cells and immune cells, in LPS-induced AKI. Moreover, in vitro studies revealed macrophage AT2R activation shifts the cells to the anti-inflammatory M2 subtype. However, the protective role of the macrophage AT2R in a model of AKI is unknown. The present study addressed this question by adoptive transfer of bone marrow-derived macrophages (BMDMs) in systemic macrophage-depleted mice. We acquired significant systemic macrophage depletion by two doses of liposomal clodronate (CLD), and the mice were repopulated with BMDMs (CD11b+F4/80+, double positive) primed with AT2R agonist C21 (CLD + MacC21 + LPS) or vehicle (CLD + Mac + LPS) in vitro for 60 min, followed by LPS (5 mg/kg body wt ip) challenge. We observed a gradual increase in the CD11b+ cells at 2 and 24 h after the LPS challenge. However, kidney CD11b+ cells in the CLD + Mac + LPS group were elevated compared with the CLD + MacC21 + LPS group at 2 h after the LPS challenge. The level of inflammatory cytokine (tumor necrosis factor-α) was elevated at 2 h, which was reduced significantly in CLD + MacC21 + LPS-treated animals. Also, CLD + MacC21 + LPS-treated animals had elevated plasma and renal IL-10, indicating an anti-inflammatory role of C21-treated BMDMs. Renal functional injury in CLD + MacC21 + LPS-treated animals was partially improved. Collectively, the data demonstrate that BMDM AT2R stimulation results in anti-inflammation and partial renoprotection against early stages of LPS-induced AKI.NEW & NOTEWORTHY Endotoxin such as lipopolysaccharide (LPS) induces acute kidney injury (AKI), which is a risk factor for and often leads to chronic kidney diseases. The present study revealed that bone marrow-derived macrophage activation of the angiotensin II type 2 receptor (AT2R) contributes to the anti-inflammation and partial renoprotection against early stages of LPS-induced AKI. Since AT2R is an emerging anti-inflammatory and organ-protective target, this study advances our understanding of AT2R's anti-inflammatory mechanisms associated with renoprotection.
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Affiliation(s)
- Naureen Fatima
- Department of Pharmacological and Pharmaceutical Sciences, College of Pharmacy, University of Houston, Houston, Texas, United States
| | - Riyasat Ali
- Department of Pharmacological and Pharmaceutical Sciences, College of Pharmacy, University of Houston, Houston, Texas, United States
| | - Tahmid Faisal
- Department of Pharmacological and Pharmaceutical Sciences, College of Pharmacy, University of Houston, Houston, Texas, United States
| | - Kalyani Kulkarni
- Department of Pharmacological and Pharmaceutical Sciences, College of Pharmacy, University of Houston, Houston, Texas, United States
| | - Sanket Patel
- Department of Pharmacological and Pharmaceutical Sciences, College of Pharmacy, University of Houston, Houston, Texas, United States
| | - Tahir Hussain
- Department of Pharmacological and Pharmaceutical Sciences, College of Pharmacy, University of Houston, Houston, Texas, United States
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John JS, Deepthi RV, Rebekah G, Prabhu SB, Ajitkumar P, Mathew G, Agarwal I. Usefulness of urinary calprotectin as a novel marker differentiating functional from structural acute kidney injury in the critical care setting. J Nephrol 2023; 36:695-704. [PMID: 36809659 DOI: 10.1007/s40620-022-01534-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2022] [Accepted: 11/20/2022] [Indexed: 02/23/2023]
Abstract
BACKGROUND Biomarkers are fundamental tools for differentiating between types of acute kidney injury (AKI) and may thus be crucial in management and prognosis. We report on a recently described biomarker, calprotectin, that appears to be a promising candidate in differentiating hypovolemic/functional AKI from intrinsic/structural AKI, whose acknowledgement may play a role in improving outcomes. We aimed to study the efficacy of urinary calprotectin in differentiating these two forms of AKI. The effect of fluid administration on the subsequent clinical course of AKI, its severity and the outcomes were also studied. METHODOLOGY Children who presented with conditions predisposing to AKI or with diagnosis of AKI were included. Urine samples for calprotectin analysis were collected and stored at - 20 ºC for analysis at the end of the study. Fluids were administered as per clinical conditions, followed by intravenous furosemide 1 mg/kg, and patients were observed closely for at least 72 h. Children with serum creatinine normalization and clinical improvement were classified as with functional AKI, while those with no response were classified as with structural AKI. Urine calprotectin levels between these two groups were compared. Statistical analysis was performed with SPSS 21.0 software. RESULTS Of the 56 children enrolled, 26 were classified as with functional AKI and 30 as with structural AKI. Stage 3 AKI was observed in 48.2% of patients and stage 2 AKI in 33.8%. Mean urine output, creatinine and stage of AKI improved with fluid and furosemide or furosemide alone (OR 6.08, 95% CI 1.65-27.23) (p < 0.01). A positive response to fluid challenge was in favor of functional AKI (OR 6.08, 95% CI 1.65-27.23) (p = 0.008). Presence of edema, sepsis and need for dialysis were hallmarks of structural AKI (p < 0.05). Urine calprotectin/creatinine values were 6 times higher in structural AKI compared to functional AKI. Urine calprotectin/creatinine ratio showed the best sensitivity (63.3%) and specificity (80.7%) at a cut-off value of 1 mcg/mL in differentiating the two types of AKI. CONCLUSION Urinary calprotectin is a promising biomarker that may help differentiating structural from functional AKI in children.
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Affiliation(s)
- Jomol Sara John
- Christian Medical College and Hospital, Christian Medical College Vellore, Vellore, Tamil Nadu, India
| | - R V Deepthi
- Christian Medical College and Hospital, Christian Medical College Vellore, Vellore, Tamil Nadu, India
| | - Grace Rebekah
- Christian Medical College and Hospital, Christian Medical College Vellore, Vellore, Tamil Nadu, India
| | - Savit B Prabhu
- Christian Medical College and Hospital, Christian Medical College Vellore, Vellore, Tamil Nadu, India
| | - P Ajitkumar
- Christian Medical College and Hospital, Christian Medical College Vellore, Vellore, Tamil Nadu, India
| | - Georgie Mathew
- Christian Medical College and Hospital, Christian Medical College Vellore, Vellore, Tamil Nadu, India
| | - Indira Agarwal
- Christian Medical College and Hospital, Christian Medical College Vellore, Vellore, Tamil Nadu, India.
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Kourelis G, Kanakis M, Samanidis G, Tzannis K, Bobos D, Kousi T, Apostolopoulou S, Kakava F, Kyriakoulis K, Bounta S, Rammos S, Papagiannis J, Giannopoulos N, Orfanos SE, Dimopoulos G. Acute Kidney Injury Predictors and Outcomes after Cardiac Surgery in Children with Congenital Heart Disease: An Observational Cohort Study. Diagnostics (Basel) 2022; 12:diagnostics12102397. [PMID: 36292086 PMCID: PMC9601135 DOI: 10.3390/diagnostics12102397] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2022] [Revised: 09/27/2022] [Accepted: 09/28/2022] [Indexed: 11/16/2022] Open
Abstract
Acute Kidney Injury (AKI) commonly complicates cardiac surgery in children with congenital heart disease (CHD). In this study we assessed incidence, risk factors, and outcomes of postoperative AKI, while testing the hypothesis that, depending on the underlying diagnosis, there would be significant differences in AKI incidence among different diagnostic groups. We conducted an observational cohort study of children with CHD undergoing cardiac surgery in a single tertiary center between January 2019 and August 2021 (n = 362). Kidney Disease Improving Global Outcome (KDIGO) criteria were used to determine the incidence of postoperative AKI. Diagnosis was incorporated into multivariate models using an anatomic-based CHD classification system. Overall survival was estimated using Kaplan−Meier curves. Log-rank test and adjusted Cox proportional hazard modelling were used to test for differences in survival distributions and determine AKI effect on survival function, respectively. AKI occurred in 70 (19.3%), with 21.4% in-hospital mortality for AKI group. Younger age, lower weight, longer cardiopulmonary bypass time, preoperative mechanical ventilation and diagnostic category were associated with postoperative AKI. Resolution rate was 92.7% prior to hospital discharge for survivors. AKI was associated with longer duration of mechanical ventilation, ICU and hospital length of stay. AKI patients had significantly higher probability of all-cause mortality postoperatively when compared to the non-AKI group (log-rank test, p < 0.001). Adjusted hazard ratio for AKI versus non-AKI group was 11.08 (95% CI 2.45−50.01; p = 0.002). Diagnostic category was associated with cardiac surgery-related AKI in children with CHD, a finding supporting the development of lesion specific models for risk stratification. Postoperative AKI had detrimental impact on clinical outcomes and was associated with decreased survival to hospital discharge.
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Affiliation(s)
- Georgios Kourelis
- Pediatric Cardiac and Adult Congenital Heart Disease Intensive Care Unit, Onassis Cardiac Surgery Center, Andrea Syggrou 356 Av., 17674 Kallithea, Greece
- Correspondence: or ; Tel.: +30-210-9493-210
| | - Meletios Kanakis
- Paediatric Cardiac and Adult Congenital Heart Disease Surgical Department, Onassis Cardiac Surgery Center, Andrea Syggrou 356 Av., 17674 Kallithea, Greece
| | - George Samanidis
- Paediatric Cardiac and Adult Congenital Heart Disease Surgical Department, Onassis Cardiac Surgery Center, Andrea Syggrou 356 Av., 17674 Kallithea, Greece
- Department of Adult Cardiac Surgery, Onassis Cardiac Surgery Center, 17674 Athens, Greece
| | - Kimon Tzannis
- 4th Department of Internal Medicine, National and Kapodistrian University of Athens Medical School, 1 Rimini Street, 12462 Athens, Greece
| | - Dimitrios Bobos
- Paediatric Cardiac and Adult Congenital Heart Disease Surgical Department, Onassis Cardiac Surgery Center, Andrea Syggrou 356 Av., 17674 Kallithea, Greece
| | - Theofili Kousi
- Department of Anesthesiology, Onassis Cardiac Surgery Center, Andrea Syggrou 356 Av., 17674 Kallithea, Greece
| | - Sotiria Apostolopoulou
- Department of Pediatric Cardiology and Adult Congenital Heart Disease, Onassis Cardiac Surgery Center, Andrea Syggrou 356 Av., 17674 Kallithea, Greece
| | - Felicia Kakava
- Pediatric Cardiac and Adult Congenital Heart Disease Intensive Care Unit, Onassis Cardiac Surgery Center, Andrea Syggrou 356 Av., 17674 Kallithea, Greece
| | - Konstantinos Kyriakoulis
- Pediatric Cardiac and Adult Congenital Heart Disease Intensive Care Unit, Onassis Cardiac Surgery Center, Andrea Syggrou 356 Av., 17674 Kallithea, Greece
| | - Stavroula Bounta
- Pediatric Cardiac and Adult Congenital Heart Disease Intensive Care Unit, Onassis Cardiac Surgery Center, Andrea Syggrou 356 Av., 17674 Kallithea, Greece
| | - Spyridon Rammos
- Department of Pediatric Cardiology and Adult Congenital Heart Disease, Onassis Cardiac Surgery Center, Andrea Syggrou 356 Av., 17674 Kallithea, Greece
| | - John Papagiannis
- Department of Pediatric Cardiology and Adult Congenital Heart Disease, Onassis Cardiac Surgery Center, Andrea Syggrou 356 Av., 17674 Kallithea, Greece
| | - Nickolas Giannopoulos
- Paediatric Cardiac and Adult Congenital Heart Disease Surgical Department, Onassis Cardiac Surgery Center, Andrea Syggrou 356 Av., 17674 Kallithea, Greece
| | - Stylianos E. Orfanos
- 1st Department of Critical Care, National and Kapodistrian University of Athens Medical School, 12462 Athens, Greece
| | - George Dimopoulos
- 3rd Department of Critical Care, “EVGENIDIO” Hospital, National and Kapodistrian University of Athens (NKUA), 12462 Athens, Greece
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Santana-Padilla Y, Fernández-Castillo J, Mateos-Dávila A. La clasificación de la lesión renal aguda: una herramienta para las enfermeras de críticos. ENFERMERIA INTENSIVA 2022. [DOI: 10.1016/j.enfi.2022.05.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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Evaluation of postoperative renal functions and its effect on body perfusion in patients with double aortic cannulation. Cardiol Young 2022; 33:733-740. [PMID: 35635193 DOI: 10.1017/s1047951122001627] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
BACKGROUND The optimal visceral preservation method during aortic arch reconstruction is still controversial. It has been thought that double aortic cannulation is effective. Herein, it was aimed to evaluate this technique in providing distal perfusion. METHODS A total of 74 patients who underwent arch reconstruction between 2011 and 2019 were included. Patients were grouped according to ventricular physiology and cannulation strategies. Group 1 were univentricle patients, and all had double aortic cannulation. Group 2 were biventricular patients. Group 2A double aortic cannulation-done and Group 2B non-double aortic cannulation were included. Lactate, urea, creatinine values, renal functions, and need for peritoneal dialysis of patients were evaluated. RESULTS There were no complications observed due to descending aortic cannulation in any of the patients. A delayed sternal closure and the need for peritoneal dialysis were more common in the Group 1 (p < 0.01). The preoperative and postoperative 1st- and 2nd-day lactate, urea, and creatinine values in the Group 1 were higher (p < 0.05) when compared with the Group 2A and 2B. The same values were higher in Group 2A than the Group 2B (p < 0.05). CONCLUSION The positive effect of double aortic cannulation on renal dysfunction could not be demonstrated. This may be associated with a <1 month of age, low weight, complex surgical procedure, and high preoperative lactate, urea, and creatinine values in patients with double aortic cannulation.
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Wang WJ, Chou MC, Lee YJ, Hsu WL, Wang GJ. A simple electrochemical immunosensor based on a gold nanoparticle monolayer electrode for neutrophil gelatinase-associated lipocalin detection. Talanta 2022; 246:123530. [DOI: 10.1016/j.talanta.2022.123530] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2021] [Revised: 04/23/2022] [Accepted: 05/04/2022] [Indexed: 01/23/2023]
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Kuai Y, Huang H, Dai X, Zhang Z, Bai Z, Chen J, Fang F, Pan J, Li X, Wang J, Li Y. In PICU acute kidney injury stage 3 or mortality is associated with early excretion of urinary renin. Pediatr Res 2022; 91:1149-1155. [PMID: 34083760 DOI: 10.1038/s41390-021-01592-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/21/2020] [Revised: 05/12/2021] [Accepted: 05/17/2021] [Indexed: 11/09/2022]
Abstract
BACKGROUND Urinary renin is proposed to be a novel prognostic biomarker of acute kidney injury (AKI) in adults. The intention of our study was to evaluate the early predictive value of urinary renin for AKI and pediatric intensive care unit (PICU) mortality in critically ill children. METHODS The first available urine sample during the first 24 h after admission was collected upon PICU admission for the measurement of renin using ELISA. Urinary renin concentrations were corrected for urinary creatinine (urinary renin-to-creatinine ratio, uRenCR). AKI was defined based on KDIGO criteria. RESULTS Of the 207 children, 22 developed AKI, including 6 with stage 1, 6 with stage 2, and 10 with stage 3, and 14 died during PICU stay. There was a significant difference in uRenCR between non-AKI children and those with AKI stage 3 (P = 0.001), but not with AKI stage 1 or 2. The uRenCR remained associated with AKI stage 3 and PICU mortality after adjustment for potential confounders. The area under the receiver operating characteristic curve of uRenCR for discrimination of AKI stage 3 was 0.805, and PICU mortality was 0.801. CONCLUSIONS Urinary renin was associated with the increased risk for AKI stage 3 and PICU mortality in critically ill children. IMPACT Urinary renin is proposed to be a novel prognostic biomarker of AKI in adult patients. There are some differences between children and adults in physiological and pathophysiological characteristics. This study demonstrated that urinary renin was associated with the increased risk for AKI stage 3 and PICU mortality in critically ill children. Accurate identification of patients with severe renal injury or at high risk for mortality early in the disease course could augment the efficacy of available interventions and improve patient outcomes.
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Affiliation(s)
- Yuxian Kuai
- Department of Nephrology and Immunology, Children's Hospital of Soochow University, Suzhou, Jiangsu province, China
| | - Hui Huang
- Department of Nephrology and Immunology, Children's Hospital of Soochow University, Suzhou, Jiangsu province, China
| | - Xiaomei Dai
- Department of Nephrology and Immunology, Children's Hospital of Soochow University, Suzhou, Jiangsu province, China
| | - Zhongyue Zhang
- Department of Nephrology and Immunology, Children's Hospital of Soochow University, Suzhou, Jiangsu province, China
| | - Zhenjiang Bai
- Pediatric Intensive Care Unit, Children's Hospital of Soochow University, Suzhou, Jiangsu province, China
| | - Jiao Chen
- Pediatric Intensive Care Unit, Children's Hospital of Soochow University, Suzhou, Jiangsu province, China
| | - Fang Fang
- Institute of Pediatric Research, Children's Hospital of Soochow University, Suzhou, Jiangsu province, China
| | - Jian Pan
- Institute of Pediatric Research, Children's Hospital of Soochow University, Suzhou, Jiangsu province, China
| | - Xiaozhong Li
- Department of Nephrology and Immunology, Children's Hospital of Soochow University, Suzhou, Jiangsu province, China
| | - Jian Wang
- Institute of Pediatric Research, Children's Hospital of Soochow University, Suzhou, Jiangsu province, China
| | - Yanhong Li
- Department of Nephrology and Immunology, Children's Hospital of Soochow University, Suzhou, Jiangsu province, China. .,Institute of Pediatric Research, Children's Hospital of Soochow University, Suzhou, Jiangsu province, China.
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Loureiro ACC, Nocrato GF, Correia ALL, de Matos RS, Filho JCCN, Daher EDF, Pinto FHM, de Oliveira AC, Ceccatto VM, Fortunato RS, de Carvalho DP. Serum and Urinary Neutrophil Gelatinase-Associated Lipocalin Are Not Associated With Serum Redox Parameters in Amateur Athletes After an Ultramarathon. Front Physiol 2022; 13:811514. [PMID: 35370771 PMCID: PMC8970054 DOI: 10.3389/fphys.2022.811514] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2021] [Accepted: 01/31/2022] [Indexed: 11/13/2022] Open
Abstract
Objective To evaluate the relationship between oxidative stress and NGAL levels in blood and urine of amateur athletes after participating in a 100 km ultramarathon. Methodology The sample was composed of seven athletes, submitted to anthropometric assessment, cardiopulmonary exercise test, collection of urine and blood, measurement of body weight. The rate of perceived exertion (RPE), competition duration, heart rate (HR), energy expenditure and oxygen consumption (V'O2") were also measured during the event. The energy consumption during the race was verified at its end. The analyses were based on the means (M) and respective standard deviations (SD), with statistical significance set at 5% (p < 0.05). Paired t-test was used for comparison between the periods before and after the competition, and Pearson's correlation coefficient was used to measure the linear correlation between quantitative variables. Results Body mass index (BMI) of the sample was 25.75 kg/m2 ± 3.20, body fat percentage 18.54% ± 4.35% and V'O2"max 48.87% ± 4.78. Glucose, cortisol, and neutrophil gelatinase-associated lipocalin (NGAL) (p < 0.01) as well as glutathione peroxidase (GPx) active were higher after the race when compared to basal values. Moreover, lactate, creatinine, microalbuminuria, and glomerular filtration rate (GFR) (p < 0.001) were also higher after the race. After the competition, there was a significant correlation only between serum NGAL and creatinine, which was classified as strong and positive (r: 0.77; p < 0.05). There was a significant reduction (p < 0.05) of body weight after the event (72.40 kg ± 9.78) compared to before it (73.98 kg ± 10.25). In addition, we found an increase of RPE (p < 0.001) after the race. The competition lasted 820.60 min (±117.00), with a 127.85 bpm (±12.02) HR, a 2209.72 kcal ± 951.97 energy consumption, 7837.16 kcal ± 195.71 energy expenditure, and 28.78 ml/kg/min-1 (±4.66) relative V'O2"max. Conclusion The lack of correlation between oxidative stress biomarkers and serum and urine NGAL suggests that NGAL is more sensitive to inflammatory processes than to ROS levels.
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Affiliation(s)
| | | | | | - Robson Salviano de Matos
- Department of Clinical Medicine at the Federal University of Ceará, Ceará Federal University, Fortaleza, Brazil
| | | | | | | | | | | | - Rodrigo Soares Fortunato
- Carlos Chagas Filho Biophysics Institute, Rio de Janeiro Federal University, Rio de Janeiro, Brazil
| | - Denise Pires de Carvalho
- Carlos Chagas Filho Biophysics Institute, Rio de Janeiro Federal University, Rio de Janeiro, Brazil
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Markarian T. Nouvelles approches diagnostiques de l’insuffisance rénale aiguë. ANNALES FRANCAISES DE MEDECINE D URGENCE 2022. [DOI: 10.3166/afmu-2022-0438] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
L’insuffisance rénale, véritable problème de santé publique, concernerait plus de 82 000 personnes en France. On estime que 5 à 10 % de la population française souffriraient d’une maladie rénale pouvant conduire à une insuffisance rénale avec un taux de mortalité de plus de 10 % par an. À l’inverse de la maladie rénale chronique irréversible, l’insuffisance rénale aiguë est considérée comme un dysfonctionnement transitoire et réversible. Au-delà de l’intérêt de la prévention, le diagnostic précoce de l’insuffisance rénale aiguë permettrait de mettre en place des thérapeutiques adaptées et ciblées afin d’éviter l’évolution vers des lésions rénales irréversibles. Cependant, il demeure un véritable challenge pour le praticien puisque l’on présume que près de 10 % de la population française présenteraient des lésions rénales asymptomatiques. Bien que la définition de l’insuffisance rénale aiguë ait été simplifiée durant ces dernières années, il existe de nombreuses limites. En parallèle, des progrès majeurs ont été réalisés notamment en termes de diagnostic. L’objectif de cette mise au point est de faire un rappel sur l’évolution de l’insuffisance rénale aiguë, les définitions actuelles et de présenter les nouvelles approches diagnostiques en cours de développement.
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Yousefifard M, Ahmadzadeh K, Toloui A, Ahmadzadeh H, Madani Neishaboori A, Rafiei Alavi SN, Ghelichkhani P, Tavallaei MJ, Safari S, Ataei N, Hosseini M. Assessing the value of serum and urinary interleukins for diagnosis of acute kidney injury in children and adolescents: A systematic review and meta-analysis. Pract Lab Med 2022; 28:e00262. [PMID: 35071719 PMCID: PMC8762046 DOI: 10.1016/j.plabm.2022.e00262] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2021] [Revised: 12/18/2021] [Accepted: 01/03/2022] [Indexed: 02/06/2023] Open
Abstract
Introduction Method Results Conclusion Urinary level of IL-18 is significantly higher in AKI children in comparison with non-AKI children. Serum levels of IL-6 and IL-8 are significantly higher in AKI children in comparison with non-AKI children. Overall, the sensitivity and specificity of these markers are not desirable for diagnosing AKI. Future studies should be directed towards unifying cut-off points for these markers.
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Mackowiak-Lewandowicz K, Ostalska-Nowicka D, Zaorska K, Kaczmarek E, Zachwieja J, Witt M, Nowicki M. Chronic kidney disease predictors in obese adolescents. Pediatr Nephrol 2022; 37:2479-2488. [PMID: 35211791 PMCID: PMC8869344 DOI: 10.1007/s00467-021-05403-2] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/07/2021] [Revised: 11/25/2021] [Accepted: 11/29/2021] [Indexed: 01/01/2023]
Abstract
BACKGROUND Glomerular hyperfiltration, initiating development of obesity-related glomerulopathy, results in an enlargement of the glomeruli and unsealing of the filtration barrier. It can be followed by adaptive focal segmental glomerulosclerosis and chronic kidney disease (CKD). The aim of the study was to determine the expression pattern of lipid metabolism and selected kidney damage markers in obese adolescents and to identify potential factors which can predict CKD. METHODS The study group consisted of 142 adolescents with a BMI z-score > 2. Sixty-two healthy and normal-weight individuals served as controls. The factors associated with the rate of glomerular filtration in obese adolescents were assessed by linear regression methods using univariate and multivariate analyses. The risk of developing CKD was estimated using the Fisher's exact test. RESULTS The study group was divided into "elevated," "normal," and "decreased" glomerular filtration rate (GFR) patients. Increased urine galectin-3 (Gal-3) concentration was diagnosed in all patients. "Decreased GFR" subjects expressed increased urine concentration of neutrophil gelatinase-associated lipocalin (NGAL) and daily megalin excretion. Thirty-nine study participants developed CKD. Increased uric acid (UA) concentration was associated with CKD development both in "normal" and "decreased GFR" patients. Additionally, in "normal" GFR patients, increased concentrations of cholesterol (Ch), triglycerides (TG), and NGAL were associated with CKD. CONCLUSIONS Increased serum concentrations of Ch, TG, and UA and increased urine concentration of NGAL might predict CKD development in obese adolescents with normal and decreased GFR. A higher resolution version of the Graphical abstract is available as Supplementary information.
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Affiliation(s)
| | - Danuta Ostalska-Nowicka
- Department of Pediatric Nephrology and Hypertension, Poznan University of Medical Sciences, Poznan, Poland
| | - Katarzyna Zaorska
- Department of Histology and Embryology, Poznan University of Medical Sciences, Poznan, Poland
| | - Elzbieta Kaczmarek
- Department of Bioinformatics and Computational Biology, Poznan University of Medical Sciences, Poznan, Poland
| | - Jacek Zachwieja
- Department of Pediatric Nephrology and Hypertension, Poznan University of Medical Sciences, Poznan, Poland
| | - Martin Witt
- Department of Anatomy, Rostock Univ. Med. Ctr., Rostock, Germany
| | - Michal Nowicki
- Department of Histology and Embryology, Poznan University of Medical Sciences, Poznan, Poland.
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13
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Paes-Leme FDO, Souza EM, Paes PRO, Gomes MG, Muniz FS, Campos MTG, Peixoto RB, Vaz de Melo PD, Arndt MHL, Costa Val A. Cystatin C and Iris: Advances in the Evaluation of Kidney Function in Critically Ill Dog. Front Vet Sci 2021; 8:721845. [PMID: 34820434 PMCID: PMC8606825 DOI: 10.3389/fvets.2021.721845] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2021] [Accepted: 09/17/2021] [Indexed: 12/02/2022] Open
Abstract
Critically ill hospitalized dogs are subject to certain complications, being acute kidney injury (AKI) a common one. Early diagnosis is crucial, and Cystatin C (CysC) is a reliable and early biomarker. The International Society of Renal Interest (IRIS) states that AKI severity can be assessed by mild changes in creatinine serum levels or reduction of urine output that cannot be considered biomarkers of renal injury but failure or insufficiency. Twenty-eight dogs admitted to the Intensive Care Unit under risk factors for the development of AKI were evaluated. Blood samples were collected for determination of sCr and CysC at admission and after 24, 48, and 72 h. Urine output was measured by daily monitoring, measured by collection in a closed system. The results showed the incidence of AKI was 67.9% based on the IRIS criteria and 78.6% based on cystatin C in critically ill patients' dogs. The measurement of serum cystatin C immediately on admission to the ICU was superior in the early identification of patients with AKI when compared to the IRIS classification and serum creatinine in critically ill dogs.
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Affiliation(s)
| | - Eliana M Souza
- Department of Clinic and Surgery, Federal University of Minas Gerais, Belo Horizonte, Brazil
| | | | - Maderleine Geisa Gomes
- Department of Clinic and Surgery, Federal University of Minas Gerais, Belo Horizonte, Brazil
| | - Felipe Santos Muniz
- Department of Clinic and Surgery, Federal University of Minas Gerais, Belo Horizonte, Brazil
| | | | - Renata Barbosa Peixoto
- Department of Clinic and Surgery, Federal University of Minas Gerais, Belo Horizonte, Brazil
| | | | | | - Adriane Costa Val
- Department of Clinic and Surgery, Federal University of Minas Gerais, Belo Horizonte, Brazil
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Massicotte-Azarniouch D, Sood MM, Fergusson DA, Chassé M, Tinmouth A, Knoll GA. Blood Transfusion and Adverse Graft-related Events in Kidney Transplant Patients. Kidney Int Rep 2021; 6:1041-1049. [PMID: 33912754 PMCID: PMC8071620 DOI: 10.1016/j.ekir.2021.01.015] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2020] [Revised: 12/11/2020] [Accepted: 01/04/2021] [Indexed: 12/03/2022] Open
Abstract
BACKGROUND The impact of posttransplant red blood cell transfusion (RBCT) and their potential immunomodulatory effects on kidney transplant recipients are unclear. We examined the risks for adverse graft outcomes associated with post-kidney transplant RBCT. METHODS We conducted a retrospective cohort study of all adult kidney transplant recipients at The Ottawa Hospital from 2002 to 2018. The exposure of interest was receipt of an RBCT after transplant categorized as 1, 2, 3 to 5, and >5 RBC. Outcomes of interest were rejection and death-censored graft loss (DCGL). Cox proportional hazards models were used to calculate hazard ratios (HR) with RBCT as a time-varying, cumulative exposure. RESULTS Among 1258 kidney transplant recipients, 468 (37.2%) received 2373 total RBCTs, 197 (15.7%) had rejection and 114 (9.1%) DCGL. For the receipt of 1, 2, 3 to 5, and >5 RBCT, compared with individuals never transfused, the adjusted HRs (95% confidence interval [CI]) for rejection were 2.47 (1.62-3.77), 1.27 (0.77-2.11), 1.74 (1.00-3.05), and 2.23 (1.13-4.40), respectively; DCGL 2.32 (1.02-5.27), 3.03 (1.62-5.64), 7.50 (4.19-13.43), and 14.63 (8.32-25.72), respectively. Considering a time-lag for an RBCT to be considered an exposure before an outcome to limit reverse causation, RBCT was not associated with rejection; the HRs for DCGL attenuated but remained similar. RBCT was also associated with a negative control outcome, demonstrating possible unmeasured confounding. CONCLUSION RBCT after kidney transplant is not associated with rejection, but may carry an increased risk for DCGL.
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Affiliation(s)
| | - Manish M. Sood
- Division of Nephrology, Kidney Research Center, Department of Medicine, University of Ottawa, Ontario, Canada
- Clinical Epidemiology Program, Ottawa Hospital Research Institute, Ottawa, Ontario, Canada
| | - Dean A. Fergusson
- Department of Medicine, University of Ottawa, Ontario, Canada
- Clinical Epidemiology Program, Ottawa Hospital Research Institute, Ottawa, Ontario, Canada
| | - Michaël Chassé
- Department of Medicine, University of Montreal, Montreal, Quebec, Canada
| | - Alan Tinmouth
- Clinical Epidemiology Program, Ottawa Hospital Research Institute, Ottawa, Ontario, Canada
- Department of Medicine, Division of Hematology, University of Ottawa, Ottawa, Ontario, Canada
| | - Greg A. Knoll
- Division of Nephrology, Kidney Research Center, Department of Medicine, University of Ottawa, Ontario, Canada
- Clinical Epidemiology Program, Ottawa Hospital Research Institute, Ottawa, Ontario, Canada
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15
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Kumar NS, Kumar GN, Misra KC, Rao M, Chitithoti S, Prakash SY. Association between Urinary Potassium Excretion and Acute Kidney Injury in Critically Ill Patients. Indian J Crit Care Med 2021; 25:768-772. [PMID: 34316170 PMCID: PMC8286379 DOI: 10.5005/jp-journals-10071-23914] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
Introduction Acute kidney injury (AKI) is defined in terms of serum creatinine (SrCrt) and urine output (UO). AKI occurs in 25% of critically ill patients, which increases the risk of morbidity and mortality. Early diagnosis of AKI is challenging, as utility of biomarkers is limited. This study is the first of its kind to estimate urinary potassium (UrK) excretion and its association with AKI in an Indian intensive care unit (ICU). Aims and objectives To study the association between UrK excretion and its ability to predict AKI in ICU patients. Material and methods During this prospective observational study, the patient's urinary indices and renal function tests were measured on day 1 of the ICU admission. UrK excretion and creatinine clearance (CrCl) were calculated from a 2-hour morning urine sample. Association between 2-hour UrK excretion and calculated CrCl and their ability to predict AKI in the subsequent 7 days was evaluated by Kidney Disease Improving Global Outcome (KDIGO)-AKI grading. Results Hundred patients admitted to ICU with a mean age of 53.59 ± 15.8 years were studied. The mean UrK excretion of 4.39 ± 2.52 was correlated linearly with CrCl and has a better prediction to AKI with the area under the receiver-operating characteristic curve value of 0.809 (CI 0.719-0.899), with a significant p-value (p <0.05). UrK excretion value of 3.49 on day 1 of ICU admission had 87% sensitivity and 74% specificity in predicting AKI. Thirty-one (31%) developed AKI, of which seven (22.58%) required renal replacement therapy (RRT), with 19% of all-cause mortality. Conclusion Diagnosis of AKI with traditional methods is not promising. UrK excretion correlates well with CrCl, which can be considered as the simplest accessible marker for predicting AKI in ICUs. How to cite this article Kumar NS, Kumar GN, Misra KC, Rao M, Chitithoti S, Prakash SY. Association between Urinary Potassium Excretion and Acute Kidney Injury in Critically Ill Patients. Indian J Crit Care Med 2021;25(7):768-772.
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Affiliation(s)
- Nadikuda Sunil Kumar
- Department of Critical Care Medicine, Yashoda Hospital, Hyderabad, Telangana, India
| | | | - Krushna C Misra
- Department of Critical Care Medicine, Yashoda Hospital, Hyderabad, Telangana, India
| | - Manimala Rao
- Department of Critical Care Medicine, Yashoda Hospital, Hyderabad, Telangana, India
| | - Suneetha Chitithoti
- Department of Critical Care Medicine, Yashoda Hospital, Hyderabad, Telangana, India
| | - Surya Y Prakash
- Department of Critical Care Medicine, Yashoda Hospital, Hyderabad, Telangana, India
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16
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Modarresi A, Nafar M, Sahraei Z, Salamzadeh J, Ziaie S. Early Graft Function in Deceased Donor Renal Recipients: Role of N-Acetylcysteine. IRANIAN JOURNAL OF PHARMACEUTICAL RESEARCH : IJPR 2020; 19:57-67. [PMID: 32922469 PMCID: PMC7462497 DOI: 10.22037/ijpr.2019.15546.13167] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
Reduced graft function (RGF) in donor renal transplant recipients is caused by oxidative damage due to extensive ischemia-reperfusion (I/R) injury during transplantation. Neutrophil gelatinase-associated lipocalin (NGAL) is a promising biomarker to detect tubular injury early after renal transplantation. N-acetylcysteine (NAC) is a potent antioxidant that can reduce I/R injury by improving oxidative damage. The aim of the present study is to assess the efficacy of NAC in improving graft function and reducing renal tubular injury in deceased donor renal transplant recipients. A double-blind, randomized clinical trial was conducted on 50 deceased donor renal transplant recipients. The patients were randomized into two groups, receiving either 600 mg NAC twice daily, or placebo (days 0 to 5). Results were assessed based on the rate of RGF, levels of plasma NGAL (p-NGAL) and the estimated glomerular filtration rate (eGFR). The rate of RGF was significantly lower in the patients receiving NAC vs. placebo (21.4% vs. 50%). The measurement of p-NGAL levels showed that the patients in the NAC group had significantly greater reduction of p-NGAL by both days 1 and 5 post-transplantation than those in the placebo group. A near steady-state eGFR level was reached by week 1 in the NAC group, however, the improvement of eGFR was significantly slower in the placebo group and a near steady-state was only achieved by week 4. NAC has promising potential in reducing tubular injury and improving graft function, evidenced by significant reduction in the rate of RGF and levels of p-NGAL.
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Affiliation(s)
- Atieh Modarresi
- Research Center for Rational Use of Drugs, Tehran University of Medical Sciences, Tehran, Iran.,Department of Clinical Pharmacy, School of Pharmacy, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Mohsen Nafar
- Chronic Kidney Disease Research Center, Shahid Labbafinejad Medical Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Zahra Sahraei
- Department of Clinical Pharmacy, School of Pharmacy, Shahid Beheshti University of Medical Sciences, Tehran, Iran.,Loghman Hakim Hospital, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Jamshid Salamzadeh
- Department of Clinical Pharmacy, School of Pharmacy, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Shadi Ziaie
- Department of Clinical Pharmacy, School of Pharmacy, Shahid Beheshti University of Medical Sciences, Tehran, Iran
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Abarca Rozas B, Mestas Rodríguez M, Widerström Isea J, Lobos Pareja B, Vargas Urra J. A current view on the early diagnosis and treatment of acute kidney failure. Medwave 2020; 20:e7928. [DOI: 10.5867/medwave.2020.05.7928] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2019] [Accepted: 05/18/2020] [Indexed: 11/27/2022] Open
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18
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The dual reno- and neuro-protective effects of dimethyl fumarate against uremic encephalopathy in a renal ischemia/reperfusion model. Pharmacol Rep 2020; 72:969-983. [DOI: 10.1007/s43440-020-00076-4] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2019] [Revised: 12/23/2019] [Accepted: 12/30/2019] [Indexed: 12/14/2022]
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19
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Urinary Sodium/Potassium Ratio in Acute Kidney Injury Accurately Differentiates Prerenal Azotemia from Acute Tubular Necrosis. ACTA MEDICA MARISIENSIS 2019. [DOI: 10.2478/amma-2019-0011] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Abstract
Objective: To develop a more accurate, cost effective, non-invasive test to differentiate between pre-renal renal failure (PRA) and acute tubular necrosis (ATN) in acute kidney injury (AKI).
Methods: Urine sodium/potassium (Na/K) ratios were compared with fractional excretion of sodium (FeNa) and renal failure index (RFI) as well as other commonly used indices to differentiate patients with PRA from ATN. Patients with a rise in serum creatinine > 0.5 mg/d identified from medical records for a six- to eighteen-month period, were reviewed and categorized either as PRA or ATN based on presenting findings, course in hospital or renal biopsy. All patients had urinary sodium and potassium, creatinine, and serum creatinine done.
Results: The Na/K was < 1 in PRA and > 1 in ATN, correctly identifying all 42 cases of PRA and all 28 patients with ATN. The FeNa was >1 and misdiagnosed 9 of 42 patients with PRA and was >1 and correctly diagnosed all patients with ATN. The RFI was >1 and misdiagnosed 11 of 42 patients with PRA but was >1 and correctly diagnosed all patients with ATN. The BUN/creatinine ratio, urine sodium concentration and U/P creatinine ratio all had a very poor correlation with the correct diagnosis.
Conclusion: The Na/K ratio correctly diagnosed all 42 cases of PRA and all 28 cases of ATN. It is easy to do, is cost effective, non-invasive, and is useful for following patients with PRA to see if and when they develop ATN.
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20
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Encinas JFA, Foncesca CH, Perez MM, Simões DP, da Costa Aguiar Alves B, Bacci MR, Maifrino LBM, Fonseca FLA, da Veiga GL. Role of hypoxia-inducible factor 1α as a potential biomarker for renal diseases-A systematic review. Cell Biochem Funct 2019; 37:443-451. [PMID: 31317578 DOI: 10.1002/cbf.3425] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2018] [Revised: 04/01/2019] [Accepted: 06/26/2019] [Indexed: 01/14/2023]
Abstract
Renal cells need oxygen for homeostasis; it is known for adjusting cellular functioning and the energy obtainment have a broad relationship with cellular respiration, through the O2 bioavailability. O2 homeostasis regulation in the kidney is mediated by hypoxia-inducible factors (HIFs). HIF is divided into three α isoforms, represented by HIF-1α, HIF-2α, and HIF-3α in addition to three paralogs of HIF-1β; these are involved in some metabolic processes, as well as in the pathogenesis of several diseases. Renal biopsy analyses of patients and experimental animal models aim to understand the relationship between HIF and protection against developing renal diseases or the induction of their onset, being thus this molecule can be considered a potential biomarker of renal disease. We carried out a systematic review to which we included studies on HIF-1α and renal disease in the last 5 years (2013-2018) in researches with humans and/or animal model through searches in three databases: LILACS, PubMed, and SciELO by two researchers. We obtained 22 articles that discussed the relationship with HIF as inductor or protector against renal disease and no relation between HIF and renal. We observed controversies remain regarding the relation between of HIF with renal diseases; this may be related to the different intracellular pathways mediated by HIF-1α, thereby determining differentiated cellular responses.
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Affiliation(s)
| | - Carlos Henrique Foncesca
- Department of Clinical Analysis, Faculdade de Medicina do ABC/FMABC - Santo André, Santo André, Brazil
| | - Matheus Moreira Perez
- Department of Clinical Analysis, Faculdade de Medicina do ABC/FMABC - Santo André, Santo André, Brazil
| | - Diogo Pimenta Simões
- Department of Clinical Analysis, Faculdade de Medicina do ABC/FMABC - Santo André, Santo André, Brazil.,Universidade Municipal de São Caetano do Sul/USCS - São Caetano do Sul, Sao Caetano do Sul, Brazil
| | | | - Marcelo Rodrigues Bacci
- Department of Clinical Analysis, Faculdade de Medicina do ABC/FMABC - Santo André, Santo André, Brazil
| | | | - Fernando Luiz Affonso Fonseca
- Department of Clinical Analysis, Faculdade de Medicina do ABC/FMABC - Santo André, Santo André, Brazil.,Universidade Federal de São Paulo/UNIFESP - Diadema, São Paulo, Brazil
| | - Glaucia Luciano da Veiga
- Department of Clinical Analysis, Faculdade de Medicina do ABC/FMABC - Santo André, Santo André, Brazil
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21
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Sparrow HG, Swan JT, Moore LW, Gaber AO, Suki WN. Disparate outcomes observed within Kidney Disease: Improving Global Outcomes (KDIGO) acute kidney injury stage 1. Kidney Int 2019; 95:905-913. [DOI: 10.1016/j.kint.2018.11.030] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2018] [Revised: 10/19/2018] [Accepted: 11/08/2018] [Indexed: 11/27/2022]
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22
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Wang H, Liu N, Li R, Tian J, Hu W, Zhang J. Nephropreventing effect of hypoxia-inducible factor 1α in a rat model of ischaemic/reperfusion acute kidney injury. Clin Exp Pharmacol Physiol 2018; 45:1076-1082. [PMID: 29667230 DOI: 10.1111/1440-1681.12947] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2017] [Revised: 03/24/2018] [Accepted: 03/26/2018] [Indexed: 11/28/2022]
Abstract
Acute kidney injury (AKI) occurs in 5% of hospitalized patients and in 50% of sepsis patients with acute renal dysfunction. However, there have been no safe and effective therapeutic strategies. The hypoxia condition is closely related to renal injury and function under AKI. As hypoxia-inducible factor 1α (HIF-1α) is critical for the cellular response to hypoxia, we investigated the protective effect of HIF-1α in a rat AKI model. We found that HIF-1α injection improved the survival of rat with AKI, and the level of creatinine and blood urea nitrogen (BUN) was also increased. Our data showed that HIF-1α treatment significantly alleviated ischaemic/reperfusion injury to kidney tubules and nephrocytes. We also found the downstream factors, such as EPOR, VEGF, and PHD3, were also upregulated by HIF-1α. Finally, it was observed that HIF-1α treatment also increased the percentage of adult resident progenitor cells (ARPC) in vitro and in vivo. In conclusion, HIF-1α plays a protective role in the ischaemic AKI model through stimulating the proliferation of ARPC, and our study provided a potential therapeutic strategy for AKI.
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Affiliation(s)
- Huiling Wang
- Department of Nephrology, 455th Hospital, The Institute of Nephrology in Nanjing Military Command, Shanghai, China
| | - Nanmei Liu
- Department of Nephrology, 455th Hospital, The Institute of Nephrology in Nanjing Military Command, Shanghai, China
| | - Rui Li
- Department of Nephrology, 455th Hospital, The Institute of Nephrology in Nanjing Military Command, Shanghai, China
| | - Jun Tian
- Department of Nephrology, 455th Hospital, The Institute of Nephrology in Nanjing Military Command, Shanghai, China
| | - Weifeng Hu
- Department of Nephrology, 455th Hospital, The Institute of Nephrology in Nanjing Military Command, Shanghai, China
| | - Jinyuan Zhang
- Department of Nephrology, 455th Hospital, The Institute of Nephrology in Nanjing Military Command, Shanghai, China
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23
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Han M, Li Y, Wen D, Liu M, Ma Y, Cong B. NGAL protects against endotoxin-induced renal tubular cell damage by suppressing apoptosis. BMC Nephrol 2018; 19:168. [PMID: 29980183 PMCID: PMC6035415 DOI: 10.1186/s12882-018-0977-3] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2017] [Accepted: 06/28/2018] [Indexed: 01/20/2023] Open
Abstract
Background We sought to confirm that neutrophil gelatinase-associated lipocalin (NGAL) protects against apoptosis during endotoxemia. Methods Endotoxemia was induced in rats with lipopolysaccharide (LPS; 3.5 mg/kg) and serum creatinine (SCr), urinary NGAL (uNGAL), renal histopathology confirmed acute kidney injury (AKI). Renal caspase 3 and NGAL were assayed with immunohistochemistry 6 h later. A HK-2 cell model was used in which NGAL and caspase 3 mRNA were evaluated by qRT-PCR within 6 h after LPS (50 μM) treatment, and correlations were studied. NGAL and caspase 3 mRNA expression were measured after delivering NGAL siRNA in HK-2 cells and apoptosis was measured with TUNEL and flow cytometry. Results SCr and uNGAL were significantly increased after LPS treatment and renal morphology data indicated AKI and renal tubular epithelial cell apoptosis. Caspase 3 and NGAL were predominantly expressed in the tubular epithelial cells and there was a correlation between caspase 3 and NGAL protein (r = 0.663, p = 0.01). In vitro, there was a strong correlation between caspase 3 and NGAL mRNA in LPS-injured HK-2 cells within 24 h (r = 0.448, p < 0.05). Suppressing the NGAL gene in HK-2 cells increased caspase 3 mRNA 4.5-fold and apoptosis increased 1.5-fold after LPS treatment. Conclusions NGAL is associated with caspase 3 in renal tubular cells with endotoxin-induced kidney injury, and may regulate its expression and inhibit apoptosis.
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Affiliation(s)
- Mei Han
- Department of Emergency, The Second Hospital of Hebei Medical University, Shijiazhuang, China
| | - Ying Li
- Department of Nephropathy, The Third Hospital of Hebei Medical University, Shijiazhuang, 050051, China.
| | - Di Wen
- Department of Forensic Medicine, Hebei Medical University, Shijiazhuang, China
| | - Maodong Liu
- Department of Nephropathy, The Third Hospital of Hebei Medical University, Shijiazhuang, 050051, China
| | - Yuteng Ma
- Department of Emergency, The Second Hospital of Hebei Medical University, Shijiazhuang, China
| | - Bin Cong
- Department of Forensic Medicine, Hebei Medical University, Shijiazhuang, China
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Guvercin G, Karakus V, Aksit M, Dere Y, Aktar M, Alpay H, Bozkaya G, Tatar E. Matrix metalloproteinase-9, 10, and stress hyperglycaemia in acute kidney injury. Eur J Clin Invest 2018; 48:e12963. [PMID: 29856477 DOI: 10.1111/eci.12963] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/16/2017] [Accepted: 05/30/2018] [Indexed: 11/27/2022]
Abstract
BACKGROUND This study investigated the effect of matrix metalloproteinase (MMP)-9 and 10, and stress hyperglycaemia on the necessity of emergency renal replacement therapy (RRT) and mortality in nondiabetic geriatric patients with acute kidney injury (AKI). MATERIALS AND METHODS The present observational and longitudinal study included 101 nondiabetic geriatric patients (age >65 years) with AKI. The serum levels of MMP-9 and MMP-10 were evaluated in these patients. Serum glucose level >140 mg/dL at the time of admission was accepted as stress hyperglycaemia. RESULTS The average age of patients was 81 ± 7.1 years. Stress hyperglycaemia was diagnosed in 34.6% of the cases; the majority of these cases were patients with high-serum urea, CRP, and chronic kidney disease. The average levels of MMP-9 and MMP-10 were found to be 199 ± 38 and 16.5 ± 7.5 ng/mL, respectively. Thirty-one cases (30.6%) mortality during hospitalization and 20 cases (20%) underwent emergency RRT. Multiregression analysis showed the serum urea (P < .001) and stress hyperglycaemia (P = .03) to be independently associated with mortality. Also, serum urea (P = .01), potassium level (P = .03), and MMP-10 levels (P = .03) were independently associated with the necessity of the emergency RRT. The MMP-9 levels exhibited no relation with the necessity of emergency RRT and mortality. CONCLUSION Stress hyperglycaemia is a common condition among nondiabetic geriatric patients with AKI and is related to mortality. Serum MMP-10 levels serve as an important predictor of the necessity of emergency RRT in these patients.
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Affiliation(s)
- Guray Guvercin
- Department of Internal Medicine, Izmir Bozyaka Education and Research Hospital, Health Sciences University, Izmir, Turkey
| | - Volkan Karakus
- Division of Hematology, Mugla Sitki Kocman University Training and Research Hospital, Mugla, Turkey
| | - Murat Aksit
- Department of Biochemistry, Izmir Bozyaka Education and Research Hospital, Health Sciences University, Izmir, Turkey
| | - Yelda Dere
- Division of Pathology, Mugla Sitki Kocman University Training and Research Hospital, Mugla, Turkey
| | - Merve Aktar
- Department of Internal Medicine, Izmir Bozyaka Education and Research Hospital, Health Sciences University, Izmir, Turkey
| | - Hasan Alpay
- Department of Internal Medicine, Izmir Bozyaka Education and Research Hospital, Health Sciences University, Izmir, Turkey
| | - Giray Bozkaya
- Department of Biochemistry, Izmir Bozyaka Education and Research Hospital, Health Sciences University, Izmir, Turkey
| | - Erhan Tatar
- Department of Nephrology, Izmir Bozyaka Education and Research Hospital, Health Sciences University, Izmir, Turkey
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Dzięgała M, Krajewski W, Kołodziej A, Dembowski J, Zdrojowy R. Evaluation and physiopathology of minor transient shock wave lithotripsy - induced renal injury based on urinary biomarkers levels. Cent European J Urol 2018; 71:214-220. [PMID: 30038813 PMCID: PMC6051370 DOI: 10.5173/ceju.2018.1629] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2017] [Revised: 03/20/2018] [Accepted: 05/05/2018] [Indexed: 12/23/2022] Open
Abstract
Introduction Extracorporeal shock wave lithotripsy (ESWL) is one of the most useful methods available for the treatment of urolithiasis. However, despite its significant benefits, adverse effects can occur. Oxidative stress mediated by ischemia-reperfusion might contribute to kidney injury after ESWL. Moreover, an acute kidney injury (AKI) may develop. AKI is typically diagnosed by measuring serum creatinine level, yet serum creatinine does not allow for early detection of sub-clinical AKI. The latest report has investigated multiple ways to determine ESWL - induced renal damage through the evaluation of various urine biomarkers of renal injury. Materials and methods The Medline and Web of Science databases were searched without a time limit in November 2017 using the terms 'ESWL' in conjunction with 'kidney failure', 'kidney damage', 'renal injury' and 'inflammation markers', 'biomarkers'. Boolean operators (NOT, AND, OR) were also used in succession to narrow and broaden the search. In this review, we described all the up-to-date reported urine markers of ESWL-induced renal damage. Results In recent years, several studies demonstrated evaluation of ESWL - induced renal injury based on urinary biomarkers levels and its utility in clinical practice. They have a beneficial role in the early detection of AKI, as well as in observation of a transition of this acute illness into chronic kidney disease. Conclusions Different markers have been evaluated in the urine before and after the ESWL treatment, but their number is still limited and results remain inconclusive. Further investigations are mandatory.
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Affiliation(s)
- Mateusz Dzięgała
- Wrocław Medical University, Department of Urology and Oncological Urology, Wrocław, Poland
| | - Wojciech Krajewski
- Wrocław Medical University, Department of Urology and Oncological Urology, Wrocław, Poland
| | - Anna Kołodziej
- Wrocław Medical University, Department of Urology and Oncological Urology, Wrocław, Poland
| | - Janusz Dembowski
- Wrocław Medical University, Department of Urology and Oncological Urology, Wrocław, Poland
| | - Romuald Zdrojowy
- Wrocław Medical University, Department of Urology and Oncological Urology, Wrocław, Poland
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Tamimi A, Kord E, Rappaport YH, Cooper A, Abu Hamad R, Efrati S, Kenett RS, Zisman A, Siegel YI. Salivary Neutrophil Gelatinase-Associated Lipocalin Sampling Feasibility in Acute Renal Colic. J Endourol 2018; 32:566-571. [PMID: 29641349 DOI: 10.1089/end.2017.0864] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
Abstract
PURPOSE Neutrophil gelatinase-associated lipocalin (NGAL) levels in the serum and urine are predictive biomarkers of acute kidney injury with correlation to complication and survival in major surgery. Salivary levels of NGAL during acute renal colic may reflect the degree of renal injury as it appears in different compartments encompassing body response in time perspective. Our aim is to evaluate and examine the feasibility and correlation of salivary NGAL with serum and urine levels in acute renal colic event. MATERIALS AND METHODS A prospective controlled study of all patients presenting to the emergency room with acute renal colic event diagnosed with single ureteral stone obstruction by noncontrast CT. Saliva, urine, and blood samples were collected in patients and a control group during the first morning of admission. RESULTS The study groups consisted of 44 patients and 13 controls, mean age 47 ± 15 years, body mass index 29 ± 6, mean stone size 6 ± 4 mm, mean creatinine levels 1.3 ± 0.7 mg/dL, mean white blood count 10,900 ± 3100 counts per field, and C-reactive protein 29 ± 55. Serum (190 ± 120 ng/mL vs 81 ± 24; p < 0.001) and predominantly salivary (474 ± 185 vs 328 ± 134 ng/mL; p < 0.05) NGAL levels were significantly elevated in patients compared with controls. CONCLUSIONS Salivary NGAL sampling is feasible during the acute phase of renal colic. High levels of salivary NGAL are observed in a single sampling during acute ureteral stone obstruction and may advance clinical decision-making.
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Affiliation(s)
- Ashraf Tamimi
- 1 Department of Urology, Assaf Harofeh Medical Center , Zerifin, Israel .,2 Affiliated to the Sackler School of Medicine, Tel Aviv University , Tel Aviv, Israel
| | - Eyal Kord
- 1 Department of Urology, Assaf Harofeh Medical Center , Zerifin, Israel .,2 Affiliated to the Sackler School of Medicine, Tel Aviv University , Tel Aviv, Israel
| | - Yishai H Rappaport
- 1 Department of Urology, Assaf Harofeh Medical Center , Zerifin, Israel .,2 Affiliated to the Sackler School of Medicine, Tel Aviv University , Tel Aviv, Israel
| | - Amir Cooper
- 1 Department of Urology, Assaf Harofeh Medical Center , Zerifin, Israel .,2 Affiliated to the Sackler School of Medicine, Tel Aviv University , Tel Aviv, Israel
| | - Ramziya Abu Hamad
- 2 Affiliated to the Sackler School of Medicine, Tel Aviv University , Tel Aviv, Israel .,3 Department of Nephrology, Assaf Harofeh Medical Center , Zerifin, Israel
| | - Shai Efrati
- 2 Affiliated to the Sackler School of Medicine, Tel Aviv University , Tel Aviv, Israel .,3 Department of Nephrology, Assaf Harofeh Medical Center , Zerifin, Israel
| | - Ron S Kenett
- 4 The Institute for Drug Research, School of Pharmacy, The Hebrew University of Jerusalem , Jerusalem, Israel
| | - Amnon Zisman
- 1 Department of Urology, Assaf Harofeh Medical Center , Zerifin, Israel .,2 Affiliated to the Sackler School of Medicine, Tel Aviv University , Tel Aviv, Israel
| | - Yoram I Siegel
- 1 Department of Urology, Assaf Harofeh Medical Center , Zerifin, Israel .,2 Affiliated to the Sackler School of Medicine, Tel Aviv University , Tel Aviv, Israel
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da Rocha EP, Yokota LG, Sampaio BM, Cardoso Eid KZ, Dias DB, de Freitas FM, Balbi AL, Ponce D. Urinary Neutrophil Gelatinase-Associated Lipocalin Is Excellent Predictor of Acute Kidney Injury in Septic Elderly Patients. Aging Dis 2018; 9:182-191. [PMID: 29896409 PMCID: PMC5963341 DOI: 10.14336/ad.2017.0307] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2017] [Accepted: 03/07/2017] [Indexed: 12/14/2022] Open
Abstract
Elderly is the main age group affected by acute kidney injury (AKI). There are no studies that investigated the predictive properties of urinary (u) NGAL as an AKI marker in septic elderly population. This study aimed to evaluate the efficacy of uNGAL as predictor of AKI diagnosis and prognosis in elderly septic patients admitted to ICUs. We prospectively studied elderly patients with sepsis admitted to ICUs from October 2014 to November 2015. Assessment of renal function was performed daily by serum creatinine and urine output. The level of uNGAL was performed within the first 48 hours of the diagnosis of sepsis (NGAL1) and between 48 and 96 hours (NGAL2). The results were presented using descriptive statistics and area under the receiver operating characteristic curve (AUC-ROC) and p value was 5%. Seventy-five patients were included, 47 (62.7%) developed AKI. At logistic regression, chronic kidney disease and low mean blood pressure at admission were identified as factors associated with AKI (OR=0.05, CI=0.01-0.60, p=0.045 and OR=0.81, CI=0,13-0.47; p=0.047). The uNGAL was excellent predictor of AKI diagnosis (AUC-ROC >0.95, and sensitivity and specificity>0.89), anticipating the AKI diagnosis in 2.1±0.3 days. Factors associated with mortality in the logistic regression were presence of AKI (OR=2.14, CI=1.42-3.98, p=0.04), chronic obstructive pulmonary disease (OR = 9.37, CI =1.79-49.1, p=0.008) and vasoactive drugs (OR=2.06, CI=0.98-1.02, p=0.04). The accuracy of NGALu 1 and 2 as predictors of death was intermediate, with AUC-ROC of 0.61 and 0.62; sensitivity between 0.65 and 0.77 and specificity lower than 0.6. The uNGAL was excellent predictor of AKI in septic elderly patients in ICUs and can anticipate the diagnosis of AKI in 2.1 days.
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Affiliation(s)
- Erica Pires da Rocha
- University Sao Paulo State-UNESP, Distrito de Rubiao Junior, without number, Botucatu, Sao Paulo, Brazil
| | - Lais Gabriela Yokota
- University Sao Paulo State-UNESP, Distrito de Rubiao Junior, without number, Botucatu, Sao Paulo, Brazil
| | - Beatriz Motta Sampaio
- University Sao Paulo State-UNESP, Distrito de Rubiao Junior, without number, Botucatu, Sao Paulo, Brazil
| | | | - Dayana Bitencourt Dias
- University Sao Paulo State-UNESP, Distrito de Rubiao Junior, without number, Botucatu, Sao Paulo, Brazil
| | | | - Andre Luis Balbi
- University Sao Paulo State-UNESP, Distrito de Rubiao Junior, without number, Botucatu, Sao Paulo, Brazil
| | - Daniela Ponce
- University Sao Paulo State-UNESP, Distrito de Rubiao Junior, without number, Botucatu, Sao Paulo, Brazil
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Kashani K, Cheungpasitporn W, Ronco C. Biomarkers of acute kidney injury: the pathway from discovery to clinical adoption. Clin Chem Lab Med 2017; 55:1074-1089. [PMID: 28076311 DOI: 10.1515/cclm-2016-0973] [Citation(s) in RCA: 179] [Impact Index Per Article: 25.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2016] [Accepted: 10/31/2016] [Indexed: 12/11/2022]
Abstract
Acute kidney injury (AKI) is a common complication of critical illnesses and has a significant impact on outcomes, including mortality and morbidities. Unfortunately, apart from prophylactic measures, no effective treatment for this syndrome is known. Therefore, early recognition of AKI not only can provide better opportunities for preventive interventions, but also opens many gates for research and development of effective therapeutic options. Over the last few years, several new AKI biomarkers have been discovered and validated to improve early detection, differential diagnosis, and differentiation of patients into risk groups for progressive renal failure, need for renal replacement therapy (RRT), or death. These novel AKI biomarkers complement serum creatinine (SCr) and urine output, which are the standard diagnostic tools for AKI detection. In this article, we review the available literature on characteristics of promising AKI biomarkers that are currently the focus of preclinical and clinical investigations. These biomarkers include neutrophil gelatinase-associated lipocalin (NGAL), kidney injury molecule 1 (KIM-1), liver-type fatty acid-binding protein, interleukin 18 (lL-18), insulin-like growth factor-binding protein 7, tissue inhibitor of metalloproteinase 2 (TIMP-2), calprotectin, urine angiotensinogen (AGT), and urine microRNA. We then describe the clinical performance of these biomarkers for diagnosis and prognostication. We also appraise each AKI biomarker's advantages and limitations as a tool for early AKI recognition and prediction of clinical outcomes after AKI. Finally, we review the current and future states of implementation of biomarkers in the clinical practice.
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Olson ES, Ortac I, Malone C, Esener S, Mattrey R. Ultrasound Detection of Regional Oxidative Stress in Deep Tissues Using Novel Enzyme Loaded Nanoparticles. Adv Healthc Mater 2017; 6. [PMID: 28081299 DOI: 10.1002/adhm.201601163] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2016] [Revised: 11/14/2016] [Indexed: 02/06/2023]
Abstract
Oxidative stress is a powerful tool that is critical to immune mediated responses in healthy individuals, yet additionally plays a crucial role in development of cancer, inflammatory pathologies, and tissue ischemia. Despite this, there remain relatively few molecular tools to study oxidative stress, particularly in living mammals. To develop an intravenously injectable probe capable of labeling sites of oxidative stress in vivo, 200 nm catalase synthetic hollow enzyme loaded nanospheres (catSHELS) are designed and fabricated using a versatile enzyme nanoencapsulation method. catSHELS catalyze H2 O2 to water and oxygen producing microbubbles that can be detected and imaged using a clinical ultrasound system. catSHELS are optimized in vitro to maximize ultrasound signal and their functionality is demonstrated in rat ischemic renal injury model. Ischemic oxidative injury is induced in a single kidney of normal rats by clamping the renal artery for 1 h followed by 2 h of reperfusion. Imaging of both kidneys is performed following the intravenous bolus injection of 1012 catSHELS of the optimized formulation. There is significant increase in ultrasound signal of the injured kidney relative to controls. This method offers a novel intravenous approach to detect oxidative stress in deep tissues in living animals.
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Affiliation(s)
- Emilia S. Olson
- Department of Radiology; University of California, San Diego; 410 Dickinson St. San Diego CA 92103 USA
| | - Inanc Ortac
- Devacell, Inc.; 6650 Lusk Blvd. Suite B105 San Diego CA 92121 USA
| | - Christopher Malone
- Department of Radiology; University of California, San Diego; 410 Dickinson St. San Diego CA 92103 USA
| | - Sadik Esener
- Department of Nanoengineering; University of California, San Diego; 9500 Gilman Dr. La Jolla CA 92093 USA
| | - Robert Mattrey
- Department of Radiology; University of California, San Diego; 410 Dickinson St. San Diego CA 92103 USA
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Cooper DS, Basu RK, Price JF, Goldstein SL, Krawczeski CD. The Kidney in Critical Cardiac Disease: Proceedings From the 10th International Conference of the Pediatric Cardiac Intensive Care Society. World J Pediatr Congenit Heart Surg 2016; 7:152-63. [PMID: 26957397 DOI: 10.1177/2150135115623289] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
The field of cardiac intensive care continues to advance in tandem with congenital heart surgery. The focus of intensive care unit care has now shifted to that of morbidity reduction and eventual elimination. Acute kidney injury (AKI) after cardiac surgery is associated with adverse outcomes, including prolonged intensive care and hospital stays, diminished quality of life, and increased long-term mortality. Acute kidney injury occurs frequently, complicating the care of both postoperative patients and those with heart failure. Patients who become fluid overloaded and/or require dialysis are at high risk of mortality, but even minor degrees of AKI portend a significant increase in mortality and morbidity. Clinicians continue to seek methods of early diagnosis and risk stratification of AKI to prevent its adverse sequelae. Previous conventional wisdom that survivors of AKI fully recover renal function without subsequent consequences may be flawed.
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Affiliation(s)
- David S Cooper
- The Heart Institute and the Center for Acute Care Nephrology, Cincinnati Children's Hospital Medical Center, University of Cincinnati College of Medicine, Cincinnati, OH, USA
| | - Rajit K Basu
- Division of Critical Care and the Center for Acute Care Nephrology, Cincinnati Children's Hospital Medical Center, University of Cincinnati College of Medicine, Cincinnati, OH, USA
| | - Jack F Price
- Division of Cardiology, Texas Children's Hospital, Baylor College of Medicine, Houston, TX, USA
| | - Stuart L Goldstein
- The Heart Institute and the Center for Acute Care Nephrology, Cincinnati Children's Hospital Medical Center, University of Cincinnati College of Medicine, Cincinnati, OH, USA
| | - Catherine D Krawczeski
- Dvision of Cardiology, Lucile Packard Children's Hospital, Stanford University, Palo Alto, CA, USA
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Abstract
OBJECTIVES The objectives of this review are to discuss the definition, diagnosis, and pathophysiology of acute kidney injury and its impact on immediate, short-, and long-term outcomes. In addition, the spectrum of cardiorenal syndromes will be reviewed including the pathophysiology on this interaction and its impact on outcomes. DATA SOURCE MEDLINE and PubMed. CONCLUSION The field of cardiac intensive care continues to advance in tandem with congenital heart surgery. As mortality has become a rare occurrence, the focus of cardiac intensive care has shifted to that of morbidity reduction. Acute kidney injury adversely impact outcomes of patients following surgery for congenital heart disease as well as in those with heart failure (cardiorenal syndrome). Patients who become fluid overloaded and/or require dialysis are at a higher risk of mortality, but even minor degrees of acute kidney injury portend a significant increase in mortality and morbidity. Clinicians continue to seek methods of early diagnosis and risk stratification of acute kidney injury to prevent its adverse sequelae.
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32
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Robinson-Cohen C, Katz R, Price BL, Harju-Baker S, Mikacenic C, Himmelfarb J, Liles WC, Wurfel MM. Association of markers of endothelial dysregulation Ang1 and Ang2 with acute kidney injury in critically ill patients. CRITICAL CARE : THE OFFICIAL JOURNAL OF THE CRITICAL CARE FORUM 2016; 20:207. [PMID: 27372077 PMCID: PMC4930837 DOI: 10.1186/s13054-016-1385-3] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/11/2016] [Accepted: 06/14/2016] [Indexed: 12/17/2022]
Abstract
BACKGROUND The role of endothelial dysregulation with acute kidney injury (AKI) in critically ill patients is unclear. METHODS We retrospectively assessed the associations of AKI with biomarkers of endothelial function and inflammation among 948 subjects admitted to the intensive care unit (ICU) at Harborview Medical Center (Seattle, WA, USA). From plasma obtained within 24 h of enrollment, we measured angiopoietin (Ang)-1 and Ang-2 alongside biomarkers of inflammation, including interleukin (IL)-6, IL-17 and granulocyte colony-stimulating factor. We tested for associations between standardized concentrations of biomarkers and AKI, defined by serum creatinine, from ICU admission to up to 7 days later. RESULTS All biomarkers of inflammation and endothelial dysfunction were associated with AKI. After adjustment for demographics, comorbidities, and IL-6 concentration, every standard deviation of Ang-1 concentration was associated with a 19 % lower risk of AKI (relative risk (RR) = 0.85, 95 % confidence interval (CI) 0.77-0.93, p < 0.001). Conversely, higher Ang-2 concentration was associated with higher risk of AKI (RR per standard deviation = 1.17, 95 % CI 1.13-1.22, p < 0.001). CONCLUSIONS In critically ill patients, plasma concentration of the endothelial growth factors Ang-1 and Ang-2 are associated with AKI, independently of inflammation.
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Affiliation(s)
- Cassianne Robinson-Cohen
- Kidney Research Institute, Division of Nephrology, Department of Medicine, University of Washington, 325 9th Ave, Box 359606, Seattle, WA, 98104, USA.
| | - Ronit Katz
- Kidney Research Institute, Division of Nephrology, Department of Medicine, University of Washington, 325 9th Ave, Box 359606, Seattle, WA, 98104, USA
| | - Brenda L Price
- Kidney Research Institute, Division of Nephrology, Department of Medicine, University of Washington, 325 9th Ave, Box 359606, Seattle, WA, 98104, USA.,Department of Biostatistics, University of Washington, Seattle, WA, USA
| | - Susanna Harju-Baker
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, University of Washington, Seattle, WA, USA
| | - Carmen Mikacenic
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, University of Washington, Seattle, WA, USA
| | - Jonathan Himmelfarb
- Kidney Research Institute, Division of Nephrology, Department of Medicine, University of Washington, 325 9th Ave, Box 359606, Seattle, WA, 98104, USA
| | - W Conrad Liles
- Center for Lung Biology, Division of Allergy and Infectious Diseases, Department of Medicine, University of Washington, Seattle, WA, USA
| | - Mark M Wurfel
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, University of Washington, Seattle, WA, USA
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George LK, Molnar MZ, Lu JL, Kalantar-Zadeh K, Koshy SKG, Kovesdy CP. Association of Pre-Operative Albuminuria with Post-Operative Outcomes after Coronary Artery Bypass Grafting. Sci Rep 2015; 5:16458. [PMID: 26548590 PMCID: PMC4637927 DOI: 10.1038/srep16458] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2015] [Accepted: 10/09/2015] [Indexed: 11/18/2022] Open
Abstract
The effect on post-operative outcomes after coronary artery bypass graft(CABG) surgery is not clear. Among 17,812 patients who underwent CABG during October 1,2006-September 28,2012 in any Department of US Veterans Affairs(VA) hospital, we identified 5,968 with available preoperative urine albumin-creatinine ratio(UACR) measurements. We examined the association of UACR<30, 30–299 and >=300 mg/g with 30/90/180/365-day and overall all-cause mortality, and hospitalization length >10 days, and with acute kidney injury(AKI). Mean ± SD baseline age and eGFR were 66 ± 8 years and 77 ± 19 ml/min/1.73 m2, respectively. 788 patients(13.2%) died during a median follow-up of 3.2 years, and 26.8% patients developed AKI(23.1%-Stage 1; 2.9%-Stage 2; 0.8%-Stage 3) within 30 days of CABG. The median lengths of stay were 8 days(IQR: 6–13 days), 10 days(IQR: 7–14 days) and 12 days(IQR: 8–19 days) for groups with UACR < 30 mg/g, 30–299 mg/g and ≥300 mg/g, respectively. Higher UACR conferred 72 to 85% higher 90-, 180-, and 365-day mortality compared to UACR<30 mg/g (odds ratio and 95% confidence interval for UACR≥300 vs. <30 mg/g: 1.72(1.01–2.95); 1.85(1.14–3.01); 1.74(1.15–2.61), respectively). Higher UACR was also associated with significantly longer hospitalizations and higher incidence of all stages of AKI. Higher UACR is associated with significantly higher odds of mortality, longer post-CABG hospitalization, and higher AKI incidence.
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Affiliation(s)
- Lekha K George
- Division of Nephrology, Department of Medicine, University of Tennessee Health Science Center, Memphis, 956 Court Ave, Memphis, TN, 38163, USA.,Regional One Health, Memphis, 877 Jefferson Ave, Memphis, TN, 38103, USA
| | - Miklos Z Molnar
- Division of Nephrology, Department of Medicine, University of Tennessee Health Science Center, Memphis, 956 Court Ave, Memphis, TN, 38163, USA
| | - Jun L Lu
- Division of Nephrology, Department of Medicine, University of Tennessee Health Science Center, Memphis, 956 Court Ave, Memphis, TN, 38163, USA
| | - Kamyar Kalantar-Zadeh
- Division of Nephrology, University of California, Irvine, 101 The City Drive, Orange, CA 92868, USA
| | - Santhosh K G Koshy
- Regional One Health, Memphis, 877 Jefferson Ave, Memphis, TN, 38103, USA.,Division of Cardiology, Department of Medicine, University of Tennessee Health Sciences Center, Memphis, 956 Court Ave, Memphis, TN, 38163, USA
| | - Csaba P Kovesdy
- Division of Nephrology, Department of Medicine, University of Tennessee Health Science Center, Memphis, 956 Court Ave, Memphis, TN, 38163, USA.,Nephrology Section, Memphis Veterans Affairs Medical Center, Memphis, 1030 Jefferson Ave., Memphis TN 38104, USA
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Chiang PJ, Li TC, Chang CH, Chen LL, Lin JD, Su YC. SEED: the six excesses (Liu Yin) evaluation and diagnosis scale. Chin Med 2015; 10:30. [PMID: 26516343 PMCID: PMC4624590 DOI: 10.1186/s13020-015-0059-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2014] [Accepted: 09/14/2015] [Indexed: 11/27/2022] Open
Abstract
Background Infections such as common colds, influenza, acute upper respiratory infections, bacterial gastroenteritis, and urinary tract infections are usually diagnosed according to patients’ signs and symptoms. This study aims to develop a scale for the diagnosis of infectious diseases based on the six excesses (Liu Yin) etiological theory of Chinese medicine (CM) by the Delphi method. Methods A total of 200 CM-guided diagnostic items measuring signs and symptoms for infectious diseases were compiled from CM literature archives from the Han to Ming dynasties, CM textbooks in both China and Taiwan, and journal articles from the China Knowledge Resource Integrated Database. The items were based on infections and the six excesses (Liu Yin) etiological theory, i.e., Feng Xie (wind excess), Han Xie (coldness excess), Shu Xie (summer heat excess), Shi Xie (dampness excess), Zao Xie (dryness excess), and Huo Xie (fire excess). The items were further classified into the six excess syndromes and reviewed via a Delphi process to reach consensus among CM experts. Results In total, 178 items with a mean or median rating of 7 or above on a scale of 1–9 from a panel of 32 experts were retained. The numbers of diagnostic items in the categories of Feng (wind), Han (coldness), Shu (summer heat), Shi (dampness), Zao (dryness), and Huo (fire) syndromes were 15, 22, 25, 37, 17, and 62, respectively. Conclusions A CM-based six excesses (Liu Yin) evaluation and diagnosis (SEED) scale was developed for the evaluation and diagnosis of infectious diseases based only on signs and symptoms.
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Affiliation(s)
- Pei-Jung Chiang
- Graduate Institute of Chinese Medicine, School of Chinese Medicine, China Medical University, Taichung, Taiwan ; Department of Traditional Chinese Medicine, Taichung Veterans General Hospital, Taichung, Taiwan
| | - Tsai-Chung Li
- Graduate Institute of Biostatistics, China Medical University, Taichung, Taiwan
| | - Chih-Hung Chang
- Feinberg School of Medicine, Northwestern University, Chicago, USA
| | - Li-Li Chen
- School of Nursing, China Medical University, Taichung, Taiwan ; Department of Nursing, China Medical University Hospital, Taichung, Taiwan
| | - Jun-Dai Lin
- Department of Healthcare Administration, College of Medical and Health Science, Asia University, Taichung, Taiwan
| | - Yi-Chang Su
- Graduate Institute of Chinese Medicine, School of Chinese Medicine, China Medical University, Taichung, Taiwan
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van den Akker EK, Hesselink DA, Manintveld OC, IJzermans JNM, de Bruijn RWF, Dor FJMF. Neutrophil Gelatinase-Associated Lipocalin, but Not Kidney Injury Marker 1, Correlates with Duration of Delayed Graft Function. Eur Surg Res 2015; 55:319-327. [PMID: 26451602 DOI: 10.1159/000440718] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2015] [Accepted: 08/31/2015] [Indexed: 01/10/2023]
Abstract
BACKGROUND No specific early biomarker is available to measure kidney injury after kidney transplantation (KT). Both neutrophil gelatinase-associated lipocalin (NGAL) and kidney injury marker 1 (KIM-1) increase after oxidative injury. Their potential as early biomarkers was evaluated in this one-arm pilot study. MATERIALS AND METHODS Twenty consecutive KT patients receiving a kidney from a donation after circulatory death donor were included. Graft perfusate was collected, as well as serum samples before transplantation, at the end of surgery, and 1, 4, and 7 days after transplantation. NGAL and KIM-1 were measured using ELISA. Kidney function and delayed graft function (DGF) were monitored. RESULTS In this cohort, 85% of the KT patients developed DGF. Perfusate NGAL correlated with donor age (r2 = 0.094, p = 0.01) and serum creatinine (r2 = 0.243, p = 0.05). A cardiac cause of death was associated with higher NGAL in the perfusate (p = 0.03). Serum NGAL at day 1 was significantly higher in patients with DGF (730 ng/ml, range 490-1,655, vs. 417 ng/ml, range 232-481; p = 0.01). Serum NGAL levels at day 1, 4, and 7 correlated with the duration of DGF. KIM-1 was not detectable in the perfusate or in the serum until postoperative day 4 in 80% of patients. CONCLUSIONS NGAL in the perfusate correlates with known donor risk factors for DGF. For the first time, we describe that serum NGAL at day 1 can discriminate between DGF and immediate graft function. Also, serum NGAL levels at day 1, 4, and 7 correlate with the duration of DGF. No association with KIM-1 was found. These data suggest that NGAL may be used as an early biomarker to detect DGF and warrants further study.
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Affiliation(s)
- Eline Kristina van den Akker
- Division of HPB and Transplant Surgery, Department of Surgery, Erasmus MC, University Medical Center Rotterdam, Rotterdam, The Netherlands
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Quintavalle C, Anselmi CV, De Micco F, Roscigno G, Visconti G, Golia B, Focaccio A, Ricciardelli B, Perna E, Papa L, Donnarumma E, Condorelli G, Briguori C. Neutrophil Gelatinase–Associated Lipocalin and Contrast-Induced Acute Kidney Injury. Circ Cardiovasc Interv 2015; 8:e002673. [DOI: 10.1161/circinterventions.115.002673] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Affiliation(s)
- Cristina Quintavalle
- From the Department of Molecular Medicine and Medical Biotechnology, “Federico II” University, Naples, Italy (C.Q., E.P., G.C.); Institute of Genetics and Biomedical Research, Milan Unit, Milan, Italy (C.V.A., L.P.); Humanitas Research Hospital, Rozzano, Italy (C.V.A., L.P.); Laboratory of Interventional Cardiology and Department of Cardiology, Clinica Mediterranea, Naples, Italy (F.D.M., G.V., B.G., A.F., B.R., C.B.); Institute for Endocrinology and Experimental Oncology, National Research Council,
| | - Chiara Viviani Anselmi
- From the Department of Molecular Medicine and Medical Biotechnology, “Federico II” University, Naples, Italy (C.Q., E.P., G.C.); Institute of Genetics and Biomedical Research, Milan Unit, Milan, Italy (C.V.A., L.P.); Humanitas Research Hospital, Rozzano, Italy (C.V.A., L.P.); Laboratory of Interventional Cardiology and Department of Cardiology, Clinica Mediterranea, Naples, Italy (F.D.M., G.V., B.G., A.F., B.R., C.B.); Institute for Endocrinology and Experimental Oncology, National Research Council,
| | - Francesca De Micco
- From the Department of Molecular Medicine and Medical Biotechnology, “Federico II” University, Naples, Italy (C.Q., E.P., G.C.); Institute of Genetics and Biomedical Research, Milan Unit, Milan, Italy (C.V.A., L.P.); Humanitas Research Hospital, Rozzano, Italy (C.V.A., L.P.); Laboratory of Interventional Cardiology and Department of Cardiology, Clinica Mediterranea, Naples, Italy (F.D.M., G.V., B.G., A.F., B.R., C.B.); Institute for Endocrinology and Experimental Oncology, National Research Council,
| | - Giuseppina Roscigno
- From the Department of Molecular Medicine and Medical Biotechnology, “Federico II” University, Naples, Italy (C.Q., E.P., G.C.); Institute of Genetics and Biomedical Research, Milan Unit, Milan, Italy (C.V.A., L.P.); Humanitas Research Hospital, Rozzano, Italy (C.V.A., L.P.); Laboratory of Interventional Cardiology and Department of Cardiology, Clinica Mediterranea, Naples, Italy (F.D.M., G.V., B.G., A.F., B.R., C.B.); Institute for Endocrinology and Experimental Oncology, National Research Council,
| | - Gabriella Visconti
- From the Department of Molecular Medicine and Medical Biotechnology, “Federico II” University, Naples, Italy (C.Q., E.P., G.C.); Institute of Genetics and Biomedical Research, Milan Unit, Milan, Italy (C.V.A., L.P.); Humanitas Research Hospital, Rozzano, Italy (C.V.A., L.P.); Laboratory of Interventional Cardiology and Department of Cardiology, Clinica Mediterranea, Naples, Italy (F.D.M., G.V., B.G., A.F., B.R., C.B.); Institute for Endocrinology and Experimental Oncology, National Research Council,
| | - Bruno Golia
- From the Department of Molecular Medicine and Medical Biotechnology, “Federico II” University, Naples, Italy (C.Q., E.P., G.C.); Institute of Genetics and Biomedical Research, Milan Unit, Milan, Italy (C.V.A., L.P.); Humanitas Research Hospital, Rozzano, Italy (C.V.A., L.P.); Laboratory of Interventional Cardiology and Department of Cardiology, Clinica Mediterranea, Naples, Italy (F.D.M., G.V., B.G., A.F., B.R., C.B.); Institute for Endocrinology and Experimental Oncology, National Research Council,
| | - Amelia Focaccio
- From the Department of Molecular Medicine and Medical Biotechnology, “Federico II” University, Naples, Italy (C.Q., E.P., G.C.); Institute of Genetics and Biomedical Research, Milan Unit, Milan, Italy (C.V.A., L.P.); Humanitas Research Hospital, Rozzano, Italy (C.V.A., L.P.); Laboratory of Interventional Cardiology and Department of Cardiology, Clinica Mediterranea, Naples, Italy (F.D.M., G.V., B.G., A.F., B.R., C.B.); Institute for Endocrinology and Experimental Oncology, National Research Council,
| | - Bruno Ricciardelli
- From the Department of Molecular Medicine and Medical Biotechnology, “Federico II” University, Naples, Italy (C.Q., E.P., G.C.); Institute of Genetics and Biomedical Research, Milan Unit, Milan, Italy (C.V.A., L.P.); Humanitas Research Hospital, Rozzano, Italy (C.V.A., L.P.); Laboratory of Interventional Cardiology and Department of Cardiology, Clinica Mediterranea, Naples, Italy (F.D.M., G.V., B.G., A.F., B.R., C.B.); Institute for Endocrinology and Experimental Oncology, National Research Council,
| | - Enzo Perna
- From the Department of Molecular Medicine and Medical Biotechnology, “Federico II” University, Naples, Italy (C.Q., E.P., G.C.); Institute of Genetics and Biomedical Research, Milan Unit, Milan, Italy (C.V.A., L.P.); Humanitas Research Hospital, Rozzano, Italy (C.V.A., L.P.); Laboratory of Interventional Cardiology and Department of Cardiology, Clinica Mediterranea, Naples, Italy (F.D.M., G.V., B.G., A.F., B.R., C.B.); Institute for Endocrinology and Experimental Oncology, National Research Council,
| | - Laura Papa
- From the Department of Molecular Medicine and Medical Biotechnology, “Federico II” University, Naples, Italy (C.Q., E.P., G.C.); Institute of Genetics and Biomedical Research, Milan Unit, Milan, Italy (C.V.A., L.P.); Humanitas Research Hospital, Rozzano, Italy (C.V.A., L.P.); Laboratory of Interventional Cardiology and Department of Cardiology, Clinica Mediterranea, Naples, Italy (F.D.M., G.V., B.G., A.F., B.R., C.B.); Institute for Endocrinology and Experimental Oncology, National Research Council,
| | - Elvira Donnarumma
- From the Department of Molecular Medicine and Medical Biotechnology, “Federico II” University, Naples, Italy (C.Q., E.P., G.C.); Institute of Genetics and Biomedical Research, Milan Unit, Milan, Italy (C.V.A., L.P.); Humanitas Research Hospital, Rozzano, Italy (C.V.A., L.P.); Laboratory of Interventional Cardiology and Department of Cardiology, Clinica Mediterranea, Naples, Italy (F.D.M., G.V., B.G., A.F., B.R., C.B.); Institute for Endocrinology and Experimental Oncology, National Research Council,
| | - Gerolama Condorelli
- From the Department of Molecular Medicine and Medical Biotechnology, “Federico II” University, Naples, Italy (C.Q., E.P., G.C.); Institute of Genetics and Biomedical Research, Milan Unit, Milan, Italy (C.V.A., L.P.); Humanitas Research Hospital, Rozzano, Italy (C.V.A., L.P.); Laboratory of Interventional Cardiology and Department of Cardiology, Clinica Mediterranea, Naples, Italy (F.D.M., G.V., B.G., A.F., B.R., C.B.); Institute for Endocrinology and Experimental Oncology, National Research Council,
| | - Carlo Briguori
- From the Department of Molecular Medicine and Medical Biotechnology, “Federico II” University, Naples, Italy (C.Q., E.P., G.C.); Institute of Genetics and Biomedical Research, Milan Unit, Milan, Italy (C.V.A., L.P.); Humanitas Research Hospital, Rozzano, Italy (C.V.A., L.P.); Laboratory of Interventional Cardiology and Department of Cardiology, Clinica Mediterranea, Naples, Italy (F.D.M., G.V., B.G., A.F., B.R., C.B.); Institute for Endocrinology and Experimental Oncology, National Research Council,
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Almalky MA, Hasan SA, Hassan TH, Shahbah DA, Arafa MA, Khalifa NA, Ibrahim RE. Detection of early renal injury in children with solid tumors undergoing chemotherapy by urinary neutrophil gelatinase-associated lipocalin. Mol Clin Oncol 2015; 3:1341-1346. [PMID: 26807245 DOI: 10.3892/mco.2015.631] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2014] [Accepted: 01/14/2015] [Indexed: 01/06/2023] Open
Abstract
Acute kidney injury (AKI) is a complication in children with solid tumors undergoing chemotherapy, as it may prevent the use of therapy protocols and also hinder the supportive and diagnostic procedures. Thus, there is an urgent requirement for early predictive biomarkers of AKI. The most promising novel AKI biomarker is neutrophil gelatinase-associated lipocalin (NGAL). The aim of the present study was to compare the predictability of NGAL as a biomarker of AKI with creatinine as a traditional biomarker in children with solid tumors under chemotherapy. The study was performed on 30 patients with different types of solid tumors (reuroblastoma, Wilms tumor, medulloblastoma, rhabdomyosarcoma and Ewing sarcoma) and 20 control subjects. Urinary NGAL (uNGAL) and serum creatinine samples were taken three times: Baseline before the beginning of the treatment, one week after chemotherapy and at the end of the chemotherapy protocol. AKI is defined as a change in creatinine level by >50% of the baseline. The creatinine level only rises to this level in the third sample, while uNGAL increases significantly in the second and third samples with percentage of change 376.8 and 698.2%, respectively, which is highly significant (P<0.001). When comparing the predictive value of serum creatinine for AKI depending on the receiver operating characteristic curve with that of uNGAL, the area under the curve (AUC) for creatinine was 0.60 with a standard error (SE) of 0.086 and 95% confidence interval (CI) between 0.432 and 0.768, while that of uNGAL was highly predictive with an AUC of 0.847, SE 0.55 and 95% CI between 0.739 and 0.955. Depending only on the creatinine level for detecting the AKI will markedly delay the diagnosis; however, uNGAL is detected earlier, and is easier and more reliable as a marker for AKI in children with solid tumors undergoing chemotherapy.
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Affiliation(s)
- Mohamed A Almalky
- Department of Pediatrics, Faculty of Medicine, Zagazig University, Zagazig 44111, Egypt
| | - Sheriefa A Hasan
- Department of Pediatrics, Faculty of Medicine, Zagazig University, Zagazig 44111, Egypt
| | - Tamer H Hassan
- Department of Pediatrics, Faculty of Medicine, Zagazig University, Zagazig 44111, Egypt
| | - Doaa A Shahbah
- Department of Pediatrics, Faculty of Medicine, Zagazig University, Zagazig 44111, Egypt
| | - Mohamed A Arafa
- Department of Pediatrics, Faculty of Medicine, Zagazig University, Zagazig 44111, Egypt
| | - Naglaa A Khalifa
- Department of Clinical Pathology, Faculty of Medicine, Zagazig University, Zagazig 44111, Egypt
| | - Rasha E Ibrahim
- Department of Pediatrics, Faculty of Medicine, Zagazig University, Zagazig 44111, Egypt
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Plasma neutrophil gelatinase-associated lipocalin predicts major adverse cardiovascular events after cardiac care unit discharge. J Cardiol 2015; 67:184-91. [PMID: 26228001 DOI: 10.1016/j.jjcc.2015.05.010] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/10/2015] [Revised: 05/15/2015] [Accepted: 05/19/2015] [Indexed: 11/22/2022]
Abstract
BACKGROUND Emerging acute kidney injury biomarkers, including neutrophil gelatinase-associated lipocalin (NGAL), have a high potential for predicting worsening renal function. Acute exacerbation of renal dysfunction has a great impact on the outcomes of cardiovascular patients in critical conditions. This study aimed to evaluate whether plasma NGAL can predict the mortality and major adverse cardiovascular events (MACEs) after discharge from the cardiac care unit (CCU). METHODS Patients who were admitted to the CCU of the Tokyo University Hospital were prospectively enrolled (101 patients). Blood and urinary markers, including the blood NGAL, brain natriuretic peptide, creatinine, cystatin C, urinary albumin, N-acetyl-β-d-glucosaminidase, and L-type fatty acid-binding protein, were measured at CCU discharge. The primary outcome was MACEs until at least 6 months after CCU discharge. RESULTS Thirty-five patients experienced MACEs (35%). Multivariate logistic analysis revealed that the plasma NGAL, length of CCU stay, and existence of diabetes and heart failure were independent predicting factors for MACEs. Patients with the highest NGAL at discharge (>75th percentile) showed a significantly higher risk of MACEs than those with the lowest NGAL (<25th percentile) (log-rank test; hazard ratio, 5.15; 95% confidence interval 1.84-18.20; p<0.01). CONCLUSION Plasma NGAL at CCU discharge is a significant prognostic indicator of outcomes at 6 months in critically ill cardiac patients treated in a CCU.
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Tong A, Chando S, Crowe S, Manns B, Winkelmayer WC, Hemmelgarn B, Craig JC. Research priority setting in kidney disease: a systematic review. Am J Kidney Dis 2015; 65:674-83. [PMID: 25582284 DOI: 10.1053/j.ajkd.2014.11.011] [Citation(s) in RCA: 75] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2014] [Accepted: 11/04/2014] [Indexed: 11/11/2022]
Abstract
BACKGROUND Resources for research are insufficient to cover all unanswered questions, and therefore difficult choices about allocation must be made. Recently there has been a move toward more patient-centered research. This study aims to evaluate approaches to research prioritization in kidney disease and describe research priorities of patients with kidney disease, their caregivers, the health care providers involved in their care, and policy makers. STUDY DESIGN Systematic review. SETTING & POPULATION Studies that elicited patient, caregiver, health care provider, or policy maker priorities for research in kidney disease were included. SEARCH STRATEGY & SOURCES MEDLINE, EMBASE, PsycINFO, and CINAHL were searched to May 2014. ANALYTICAL APPROACH Descriptive synthesis. RESULTS We identified 16 studies (n=2,365 participants) conducted in the United States, the Netherlands, Australia, Canada, and internationally. Only 4 (25%) studies explicitly involved patients. Various priority-setting methods were used, including the Delphi technique, expert panels, consensus conference, ranking or voting surveys, focus groups, and interviews, of which the process was described in detail by 11 (69%) studies. The priority areas for research most frequently identified across studies were prevention of acute kidney injury, prevention of chronic kidney disease progression, fluid and diet restrictions, improving vascular access, kidney transplant survival, access to transplantation, patient education, and psychosocial impact of chronic kidney disease. LIMITATIONS Most studies were conducted in high-income countries. CONCLUSIONS The priorities identified by kidney disease research priority-setting exercises are broad ranging, but patient involvement is uncommon and the processes often are incompletely described. Establishing research priorities using a prespecified and transparent process that engages patients, caregivers, and health care providers is needed to ensure that resources are invested to answer questions that address the shared priorities in kidney disease.
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Affiliation(s)
- Allison Tong
- Sydney School of Public Health, University of Sydney, Sydney, Australia; Centre for Kidney Research, The Children's Hospital at Westmead, Westmead, NSW, Australia.
| | - Shingisai Chando
- Sydney School of Public Health, University of Sydney, Sydney, Australia; Centre for Kidney Research, The Children's Hospital at Westmead, Westmead, NSW, Australia
| | | | - Braden Manns
- Department of Medicine, Libin Cardiovascular Institute and Institute of Public Health, University of Calgary, Calgary, Canada; Department of Community Health Sciences, Libin Cardiovascular Institute and Institute of Public Health, University of Calgary, Calgary, Canada
| | | | - Brenda Hemmelgarn
- Department of Medicine, Libin Cardiovascular Institute and Institute of Public Health, University of Calgary, Calgary, Canada; Department of Community Health Sciences, Libin Cardiovascular Institute and Institute of Public Health, University of Calgary, Calgary, Canada
| | - Jonathan C Craig
- Sydney School of Public Health, University of Sydney, Sydney, Australia; Centre for Kidney Research, The Children's Hospital at Westmead, Westmead, NSW, Australia
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Saigo C, Nomura Y, Yamamoto Y, Sagata M, Matsunaga R, Jono H, Nishi K, Saito H. Meclofenamate elicits a nephropreventing effect in a rat model of ischemic acute kidney injury by suppressing indoxyl sulfate production and restoring renal organic anion transporters. DRUG DESIGN DEVELOPMENT AND THERAPY 2014; 8:1073-82. [PMID: 25143712 PMCID: PMC4137993 DOI: 10.2147/dddt.s67456] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Indoxyl sulfate (IS), a putative low-molecular weight uremic toxin, is excreted in the urine under normal kidney function, but is retained in the circulation and tissues during renal dysfunction in acute kidney injury and chronic kidney disease. IS, which is one of the most potent inducers of oxidative stress in the kidney and cardiovascular system, is enzymatically produced in the liver from indole by cytochrome P450-mediated hydroxylation to indoxyl, followed by sulfotransferase-mediated sulfate conjugation. We used rat liver S9 fraction to identify inhibitors of IS production. After testing several compounds, including phytochemical polyphenols, we identified meclofenamate as a potent inhibitor of IS production with an apparent IC50 value of 1.34 μM. Ischemia/reperfusion (I/R) of rat kidney caused a marked elevation in the serum IS concentration 48 hours after surgery. However, intravenous administration of meclofenamate (10 mg/kg) significantly suppressed this increase in the serum level of IS. Moreover, IS concentrations in both kidney and liver were dramatically elevated by renal I/R treatment, but this increase was blocked by meclofenamate. Serum creatinine and blood urea nitrogen were markedly elevated in rats after renal I/R treatment, but these increases were significantly restored by administration of meclofenamate. Renal expression of both basolateral membrane-localized organic anion transporters rOAT1 and rOAT3 was downregulated by I/R treatment. However, expression of rOAT1 and rOAT3 recovered after administration of meclofenamate, which is associated with the inhibition of I/R-evoked elevation of prostaglandin E2. Our results suggest that meclofenamate inhibits hepatic sulfotransferase-mediated production of IS, thereby suppressing serum and renal accumulation of IS. Meclofenamate also prevents the prostaglandin E2-dependent downregulation of rOAT1 and rOAT3 expression. In conclusion, meclofenamate was found to elicit a nephropreventive effect in ischemic acute kidney injury.
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Affiliation(s)
- Chika Saigo
- Department of Clinical Pharmaceutical Sciences, Graduate School of Pharmaceutical Sciences, Kumamoto University, Kumamoto, Japan
| | - Yui Nomura
- Department of Clinical Pharmaceutical Sciences, Graduate School of Pharmaceutical Sciences, Kumamoto University, Kumamoto, Japan
| | - Yuko Yamamoto
- Department of Clinical Pharmaceutical Sciences, Graduate School of Pharmaceutical Sciences, Kumamoto University, Kumamoto, Japan
| | - Masataka Sagata
- Department of Clinical Pharmaceutical Sciences, Graduate School of Pharmaceutical Sciences, Kumamoto University, Kumamoto, Japan
| | - Rika Matsunaga
- Department of Clinical Pharmaceutical Sciences, Graduate School of Pharmaceutical Sciences, Kumamoto University, Kumamoto, Japan
| | - Hirofumi Jono
- Department of Clinical Pharmaceutical Sciences, Graduate School of Pharmaceutical Sciences, Kumamoto University, Kumamoto, Japan ; Department of Pharmacy, Kumamoto University Hospital, Kumamoto, Japan
| | - Kazuhiko Nishi
- Department of Hemo-Dialysis, Kumamoto University Hospital, Kumamoto, Japan
| | - Hideyuki Saito
- Department of Clinical Pharmaceutical Sciences, Graduate School of Pharmaceutical Sciences, Kumamoto University, Kumamoto, Japan ; Department of Pharmacy, Kumamoto University Hospital, Kumamoto, Japan
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Sumida M, Doi K, Kinoshita O, Kimura M, Ono M, Hamasaki Y, Matsubara T, Ishii T, Yahagi N, Nangaku M, Noiri E. Perioperative plasma neutrophil gelatinase-associated lipocalin measurement in patients who undergo left ventricular assist device implantation surgery. Circ J 2014; 78:1891-9. [PMID: 24931412 DOI: 10.1253/circj.cj-14-0008] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
BACKGROUND Perioperative complication of end-organ injury including acute kidney injury (AKI) is a frequent and severe problem for patients undergoing left ventricular assist device (LVAD) implantation. This study evaluated an emerging AKI biomarker, plasma neutrophil gelatinase-associated lipocalin (NGAL), in a LVAD implantation cohort. METHODS AND RESULTS Of 31 LVAD implantation patients enrolled to this study, 17 (55%) patients were diagnosed as having AKI. Six AKI patients showed severe AKI requiring renal replacement therapy (RRT). Plasma NGAL values in the AKI-with-RRT group (n=6) were significantly higher than that in other patients, although the AKI-without-RRT (n=11) group showed a similar level of plasma NGAL to that of the non-AKI group (n=14). Multiple logistic regression analysis revealed that plasma NGAL measured at pre-operation and central venous pressure at pre-operation and 12 h after surgery independently discriminated against postoperative RRT requirement. In the AKI-with-RRT group, plasma NGAL decreased before termination of RRT in 4 patients who eventually showed renal recovery, although no decline of plasma NGAL was observed in 2 patients who showed no recovery of renal function. Removal of blood NGAL by continuous hemodiafiltration was shown to be 70-75% lower than that of creatinine. CONCLUSIONS Measurement of perioperative plasma NGAL is useful for predicting severe AKI requiring RRT and renal recovery in patients who have had LVAD implantation surgery. Further investigation is necessary to confirm these findings because this study examined a low number of patients.
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Affiliation(s)
- Maki Sumida
- Department of Nephrology and Endocrinology, The University of Tokyo
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Novel biomarkers for contrast-induced acute kidney injury. BIOMED RESEARCH INTERNATIONAL 2014; 2014:568738. [PMID: 24982897 PMCID: PMC4058136 DOI: 10.1155/2014/568738] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/15/2013] [Accepted: 03/14/2014] [Indexed: 01/01/2023]
Abstract
Biomarkers of acute kidney injury (AKI) may be classified in 2 groups: (1) those representing changes in renal function (e.g., serum creatinine or cystatin C and urine flow rate) and (2) those reflecting kidney damage (e.g., kidney injury molecule-1 (KIM-1), neutrophil gelatinase-associated lipocalin (NGAL), interleukin-18, etc.). According to these 2 fundamental criteria, 4 subgroups have been proposed: (1) no marker change; (2) damage alone; (3) functional change alone; and (4) combined damage and functional change. Therefore, a new category of patients with “subclinical AKI” (that is, an increase in damage markers alone without simultaneous loss of kidney function) has been identified. This condition has been associated with higher risk of adverse outcomes (including renal replacement therapy and mortality) at followup. The ability to measure these physiological variables may lead to identification of patients at risk for AKI and early diagnosis of AKI and may lead to variables, which may inform therapeutic decisions.
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Value of plasmatic membrane attack complex as a marker of severity in acute kidney injury. BIOMED RESEARCH INTERNATIONAL 2014; 2014:361065. [PMID: 24967359 PMCID: PMC4055497 DOI: 10.1155/2014/361065] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/21/2014] [Revised: 05/06/2014] [Accepted: 05/08/2014] [Indexed: 12/25/2022]
Abstract
The aim of this study was to determine if complement pathway is activated in AKI; for this purpose, we measured, through ELISA sandwich, the terminal lytic fraction of the complement system, called membrane attack complex (C5b-C9), in AKI patients compared with patients with similar clinical conditions but normal renal function. Our data showed that complement system is activated in AKI. Plasmatic MAC concentrations were significantly higher in AKI patients than in those with normal renal function; this difference is maintained independently of the AKI etiology and is proportional to the severity of AKI, measured by ADQI classification. In addition, we found that plasmatic MAC concentrations were significantly higher in patients who did not recover renal function at time of hospitalization discharge, in patients who died during the acute process, and in patients who need renal replacement therapy during hospitalization, but in this last group, the differences did not reach statistical significance. In conclusion, plasmatic MAC concentration seems valuable as a marker of AKI severity.
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Nishijima DK, Dinh T, May L, Yadav K, Gaddis GM, Cone DC. Quantifying federal funding and scholarly output related to the academic emergency medicine consensus conferences. ACADEMIC MEDICINE : JOURNAL OF THE ASSOCIATION OF AMERICAN MEDICAL COLLEGES 2014; 89:176-181. [PMID: 24280853 PMCID: PMC4018650 DOI: 10.1097/acm.0000000000000073] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
PURPOSE Every year since 2000, Academic Emergency Medicine (AEM) has presented a one-day consensus conference to generate a research agenda for advancement of a scientific topic. One of the 12 annual issues of AEM is reserved for the proceedings of these conferences. The purpose of this study was to measure academic productivity of these conferences by evaluating subsequent federal research funding received by authors of conference manuscripts and calculating citation counts of conference papers. METHOD This was a cross-sectional study. In 2012, the NIH RePORTER system was searched to identify subsequent federal funding obtained by authors of the consensus conference issues from 2000 to 2010. Funded projects were coded as related or unrelated to conference topic. Citation counts for all conference manuscripts were quantified using Scopus and Google Scholar. Simple descriptive statistics were reported. RESULTS Eight hundred fifty-two individual authors contributed to 280 papers published in the 11 consensus conference issues. One hundred thirty-seven authors (16%) obtained funding for 318 projects. A median of 22 topic-related projects per conference (range 10-97) accounted for a median of $20,488,331 per conference (range $7,779,512 to $122,918,205). The average (± SD) number of citations per paper was 15.7 ± 20.5 in Scopus and 23.7 ± 32.6 in Google Scholar. CONCLUSIONS The authors of consensus conference manuscripts obtained significant federal grant support for follow-up research related to conference themes. In addition, the manuscripts generated by these conferences were frequently cited. Conferences devoted to research agenda development appear to be an academically worthwhile endeavor.
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Affiliation(s)
- Daniel K Nishijima
- Dr. Nishijima is assistant professor, Department of Emergency Medicine, University of California Davis School of Medicine, Sacramento, California. Ms. Dinh is research coordinator, Department of Emergency Medicine, University of California Davis School of Medicine, Sacramento, California. Dr. May is assistant professor and associate director of clinical research, Department of Emergency Medicine, George Washington University School of Medicine, Washington, DC. Dr. Yadav is assistant professor and clinical research fellowship director, Department of Emergency Medicine, George Washington University School of Medicine, Washington, DC. Dr. Gaddis is St. Luke's/Missouri Endowed Chair for Emergency Medicine and professor of emergency medicine, University of Missouri-Kansas City School of Medicine. Dr. Cone is professor and EMS section chief, Department of Emergency Medicine, Yale University School of Medicine, New Haven, Connecticut
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Doi K, Urata M, Katagiri D, Inamori M, Murata S, Hisagi M, Ono M, Matsubara T, Ishii T, Yahagi N, Nangaku M, Noiri E. Plasma neutrophil gelatinase-associated lipocalin in acute kidney injury superimposed on chronic kidney disease after cardiac surgery: a multicenter prospective study. Crit Care 2013; 17:R270. [PMID: 24215663 PMCID: PMC4056897 DOI: 10.1186/cc13104] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2013] [Accepted: 10/28/2013] [Indexed: 12/20/2022] Open
Abstract
INTRODUCTION Plasma neutrophil gelatinase-associated lipocalin (NGAL) is reportedly useful for post-cardiac surgery acute kidney injury (AKI). Although chronic kidney disease (CKD) is a strong risk factor for AKI development, no clinical evaluation of plasma NGAL has specifically examined AKI occurring in patients with CKD. This study evaluated plasma NGAL in AKI superimposed on CKD after cardiac surgery. METHODS This study prospectively evaluated 146 adult patients with scheduled cardiac surgery at 2 general hospitals. Plasma NGAL was measured before surgery, at ICU arrival after surgery (0 hours), and 2, 4, 12, 24, 36, and 60 hours after ICU arrival. RESULTS Based on the Kidney Disease Improving Global Outcomes (KDIGO) CKD guideline, 72 (49.3%) were diagnosed as having CKD. Of 146 patients, 53 (36.3%) developed AKI after surgery. Multiple logistic regression analysis revealed that preoperative plasma NGAL, estimated glomerular filtration rate (eGFR), and operation time are significantly associated with AKI occurrence after surgery. Plasma NGAL in AKI measured after surgery was significantly higher than in non-AKI irrespective of CKD complication. However, transient decrease of plasma NGAL at 0 to 4 hours was observed especially in AKI superimposed on CKD. Plasma NGAL peaked earlier than serum creatinine and at the same time in mild AKI and AKI superimposed on CKD with increased preoperative plasma NGAL (>300 ng/ml). Although AKI superimposed on CKD showed the highest plasma NGAL levels after surgery, plasma NGAL alone was insufficient to discriminate de novo AKI from CKD without AKI after surgery. Receiver operating characteristics analysis revealed different cutoff values of AKI for CKD and non-CKD patients. CONCLUSIONS Results show the distinct features of plasma NGAL in AKI superimposed on CKD after cardiac surgery: 1) increased preoperative plasma NGAL is an independent risk factor for post-cardiac surgery AKI; 2) plasma NGAL showed an earlier peak than serum creatinine did, indicating that plasma NGAL can predict the recovery of AKI earlier; 3) different cutoff values of post-operative plasma NGAL are necessary to detect AKI superimposed on CKD distinctly from de novo AKI. Further investigation is necessary to confirm these findings because this study examined a small number of patients.
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Affiliation(s)
- Kent Doi
- Department of Emergency and Critical Care Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo, Tokyo 113-8655, Japan
- Department of Nephrology and Endocrinology, The University of Tokyo, Tokyo, Japan
| | - Masahiro Urata
- Department of Cardiovascular Surgery, Itabashi Chuo Medical Center, Tokyo, Japan
| | - Daisuke Katagiri
- Department of Nephrology and Endocrinology, The University of Tokyo, Tokyo, Japan
| | - Mikako Inamori
- Department of Cardiovascular Surgery, Itabashi Chuo Medical Center, Tokyo, Japan
| | - Seiichiro Murata
- Department of Cardiovascular Surgery, Itabashi Chuo Medical Center, Tokyo, Japan
| | - Motoyuki Hisagi
- Department of Cardiothoracic Surgery, The University of Tokyo, Tokyo, Japan
| | - Minoru Ono
- Department of Cardiothoracic Surgery, The University of Tokyo, Tokyo, Japan
| | - Takehiro Matsubara
- Department of Emergency and Critical Care Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo, Tokyo 113-8655, Japan
| | - Takeshi Ishii
- Department of Emergency and Critical Care Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo, Tokyo 113-8655, Japan
| | - Naoki Yahagi
- Department of Emergency and Critical Care Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo, Tokyo 113-8655, Japan
| | - Masaomi Nangaku
- Department of Nephrology and Endocrinology, The University of Tokyo, Tokyo, Japan
| | - Eisei Noiri
- Department of Nephrology and Endocrinology, The University of Tokyo, Tokyo, Japan
- Japan Science and Technology Agency/Japan International Cooperation Agency (JST/JICA), Science and Technology Research Partnership for Sustainable Development (SATREPS), Tokyo, Japan
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Soto K, Papoila AL, Coelho S, Bennett M, Ma Q, Rodrigues B, Fidalgo P, Frade F, Devarajan P. Plasma NGAL for the diagnosis of AKI in patients admitted from the emergency department setting. Clin J Am Soc Nephrol 2013; 8:2053-63. [PMID: 24009223 DOI: 10.2215/cjn.12181212] [Citation(s) in RCA: 50] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
BACKGROUND AND OBJECTIVES The purpose of this study was to determine the accuracy of plasma neutrophil gelatinase-associated lipocalin as a marker of AKI in patients admitted from the emergency department. DESIGN, SETTING, PARTICIPANTS, & MEASUREMENTS In this prospective cohort study, patients (n=616) admitted from the emergency department from March to November of 2008 were classified according to clinical criteria as AKI, transient azotemia, stable CKD, and normal function. Plasma neutrophil gelatinase-associated lipocalin was measured serially. A logistic regression model using clinical characteristics was fitted to the data, and a second model included discretized plasma neutrophil gelatinase-associated lipocalin. Performance of the models was evaluated by Hosmer-Lemeshow goodness-of-fit test, area under the receiver operating characteristic curve, net reclassification improvement, integrated discrimination improvement, and predictiveness curve. RESULTS Twenty-one percent of patients were classified as AKI; the highest median levels of plasma neutrophil gelatinase-associated lipocalin were in the AKI group (146-174 ng/ml at various time points) and increased with AKI severity (207-244 ng/ml for Acute Kidney Injury Network classification stage>2). The discriminative ability of plasma neutrophil gelatinase-associated lipocalin for AKI diagnosis (area under the curve, 0.77-0.82 at various time points) improved with higher grades of severity (area under the curve, 0.85-0.89 for AKIN>2). Plasma neutrophil gelatinase-associated lipocalin discriminated AKI from normal function and transient azotemia (area under the curve, 0.85 and 0.73, respectively). Patients were classified into three grades of AKI risk according to plasma neutrophil gelatinase-associated lipocalin levels (low, moderate [i.e., the gray zone], and high). Patients with plasma neutrophil gelatinase-associated lipocalin in the high-risk category displayed a 10-fold greater risk of AKI (odds ratio, 9.8; 95% confidence interval, 5.6 to 16.9). The addition of plasma neutrophil gelatinase-associated lipocalin to the clinical model yielded a net reclassification improvement of 94.3% and an integrated discrimination improvement of 0.122. CONCLUSION Plasma neutrophil gelatinase-associated lipocalin is an accurate biomarker for prediction of AKI in patients admitted from the emergency department. This work proposes a three-grade classification of AKI risk based on plasma neutrophil gelatinase-associated lipocalin levels.
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Affiliation(s)
- Karina Soto
- Nephrology and, §Emergency Departments, Hospital Fernando Fonseca, Lisbon, Portugal;, †Faculdade de Ciências Médicas da Universidade Nova de Lisboa, Centro de Estatística e Aplicações da Universidade de Lisboa-CEAUL, Lisbon, Portugal, ‡Nephrology and Hypertension, Cincinnati Children's Hospital Medical Center, University of Cincinnati College of Medicine, Cincinnati, Ohio
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Alge JL, Karakala N, Neely BA, Janech MG, Tumlin JA, Chawla LS, Shaw AD, Arthur JM. Association of elevated urinary concentration of renin-angiotensin system components and severe AKI. Clin J Am Soc Nephrol 2013; 8:2043-52. [PMID: 24009222 DOI: 10.2215/cjn.03510413] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
BACKGROUND Prognostic biomarkers that predict the severity of AKI at an early time point are needed. Urinary angiotensinogen was recently identified as a prognostic AKI biomarker. The study hypothesis is that urinary renin could also predict AKI severity and that in combination angiotensinogen and renin would be a strong predictor of prognosis at the time of AKI diagnosis. DESIGN, SETTING, PARTICIPANTS, & MEASUREMENTS In this multicenter, retrospective cohort study, urine was obtained from 204 patients who developed AKI after cardiac surgery from August 2008 to June 1, 2012. All patients were classified as having Acute Kidney Injury Network (AKIN) stage 1 disease by serum creatinine criteria at the time of sample collection. Urine output was not used for staging. Urinary angiotensinogen and renin were measured, and the area under the receiver-operating characteristic curve (AUC) was used to test for prediction of progression to AKIN stage 3 or in-hospital 30-day mortality. These biomarkers were added stepwise to a clinical model, and improvement in prognostic predictive performance was evaluated by category free net reclassification improvement (cfNRI) and chi-squared automatic interaction detection (CHAID). RESULTS Both the urinary angiotensinogen-to-creatinine ratio (uAnCR; AUC, 0.75; 95% confidence interval [CI], 0.65 to 0.85) and the urinary renin-to-creatinine ratio (uRenCR; AUC, 0.70; 95% CI, 0.57 to 0.83) predicted AKIN stage 3 or death. Addition of uAnCR to a clinical model substantially improved prediction of the outcome (AUC, 0.85; cfNRI, 0.673), augmenting sensitivity and specificity. Further addition of uRenCR increased the sensitivity of the model (cfNRI(events), 0.44). CHAID produced a highly accurate model (AUC, 0.91) and identified the combination of uAnCR >337.89 ng/mg and uRenCR >893.41 pg/mg as the strongest predictors (positive predictive value, 80.4%; negative predictive value, 90.7%; accuracy, 90.2%). CONCLUSION The combination of urinary angiotensinogen and renin predicts progression to very severe disease in patients with early AKI after cardiac surgery.
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Affiliation(s)
- Joseph L Alge
- Medical University of South Carolina, Charleston, South Carolina;, †University of Tennessee College of Medicine in Chattanooga, Chattanooga, Tennessee;, ‡George Washington University, Washington, DC;, §Duke University, Durham, North Carolina;, ‖Durham Veterans Affairs Medical Center, Durham, North Carolina, ¶Ralph H. Johnson Veterans Affairs Medical Center, Charleston, South Carolina
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Alge JL, Karakala N, Neely BA, Janech MG, Velez JCQ, Arthur JM. Urinary angiotensinogen predicts adverse outcomes among acute kidney injury patients in the intensive care unit. CRITICAL CARE : THE OFFICIAL JOURNAL OF THE CRITICAL CARE FORUM 2013; 17:R69. [PMID: 23587112 PMCID: PMC3672721 DOI: 10.1186/cc12612] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/16/2012] [Accepted: 04/05/2013] [Indexed: 02/08/2023]
Abstract
INTRODUCTION Acute kidney injury (AKI) is commonly observed in the intensive care unit (ICU), where it can be caused by a variety of factors. The objective of this study was to evaluate the prognostic value of urinary angiotensinogen, a candidate prognostic AKI biomarker identified in post-cardiac surgery patients, in this heterogeneous population. METHODS Urinary angiotensinogen was measured by ELISA and corrected for urine creatinine in 45 patients who developed AKI in the ICU. Patients were grouped by AKI etiology, and the angiotensinogen-to-creatinine ratio (uAnCR) was compared among the groups using the Kruskal-Wallis test. The ability of uAnCR to predict the following endpoints was tested using the area under the ROC curve (AUC): the need for renal replacement therapy (RRT) or death, increased length of stay (defined as hospital discharge>7 days or death≤7 days from sample collection), and worsening AKI (defined as an increase in serum creatinine>0.3 mg/dL after sample collection or RRT). RESULTS uAnCR was significantly elevated in patients who met the composite outcome RRT or death (89.4 vs 25.4 ng/mg; P=0.01), and it was a strong predictor of this outcome (AUC=0.73). Patients with uAnCR values above the median for the cohort (55.21 ng/mg) had increased length of stay compared to patients with uAnCR≤55.21 ng/mg (22 days vs 7 days after sample collection; P=0.01). uAnCR was predictive of the outcome increased length of stay (AUC=0.77). uAnCR was also a strong predictor of worsening of AKI (AUC=0.77). The uAnCR of patients with pre-renal AKI was lower compared to patients with AKI of other causes (median uAnCR 11.3 vs 80.2 ng/mg; P=0.02). CONCLUSIONS Elevated urinary angiotensinogen is associated with adverse events in AKI patients in the ICU. It could be used to identify high risk patients who would benefit from timely intervention that could improve their outcomes.
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Lee YJ, Hu YY, Lin YS, Chang CT, Lin FY, Wong ML, Kuo-Hsuan H, Hsu WL. Urine neutrophil gelatinase-associated lipocalin (NGAL) as a biomarker for acute canine kidney injury. BMC Vet Res 2012; 8:248. [PMID: 23270335 PMCID: PMC3549924 DOI: 10.1186/1746-6148-8-248] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2012] [Accepted: 12/20/2012] [Indexed: 11/16/2022] Open
Abstract
Background Biomarkers for the early prediction of canine acute kidney injury (AKI) are clinically important. Recently, neutrophil gelatinase-associated lipocalin (NGAL) was found to be a sensitive biomarker for the prediction of human AKI at a very early stage and the development of AKI after surgery. However, NGAL has not yet been studied with respect to dog kidney diseases. The application of NGAL canine AKI was investigated in this study. Results The canine NGAL gene was successfully cloned and expressed. Polyclonal antibodies against canine NGAL were generated and used to develop an ELISA for measuring NGAL protein in serum and urine samples that were collected from 39 dogs at different time points after surgery. AKI was defined by the standard method, namely a serum creatinine increase of greater than or equal to 26.5 μmol/L from baseline within 48 h. At 12 h after surgery, compared to the group without AKI (12 dogs), the NGAL level in the urine of seven dogs with AKI was significantly increased (median 178.4 pg/mL vs. 88.0 pg/mL), and this difference was sustained to 72 h. Conclusion As the increase in NGAL occurred much earlier than the increase in serum creatinine, urine NGAL seems to be able to serve as a sensitive and specific biomarker for the prediction of AKI in dogs.
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Affiliation(s)
- Ya-Jane Lee
- Department of Veterinary Medicine, College of Veterinary Medicine, National Chung-Hsing University, Taichung, Taiwan
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