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Yang K, He H, Dong W. Gut Microbiota and Neonatal Acute Kidney Injury. Am J Perinatol 2024; 41:1887-1894. [PMID: 38301724 DOI: 10.1055/a-2259-0101] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/03/2024]
Abstract
OBJECTIVE To characterize the relationship between gut microbiota and neonatal acute kidney injury biomarkers based on the gut-kidney axis. STUDY DESIGN The Pubmed database was primarily searched to include relevant literature on gut microbiota and neonatal acute kidney injury biomarkers, which was subsequently organized and analyzed and a manuscript was written. RESULTS Gut microbiota was associated with neonatal acute kidney injury biomarkers. These biomarkers included TIMP-2, IGFBP-7, VEGF, calbindin, GST, B2MG, ghrelin, and clusterin. CONCLUSION The gut microbiota is strongly associated with neonatal acute kidney injury biomarkers, and controlling the gut microbiota may be a potential target for ameliorating neonatal acute kidney injury. KEY POINTS · There is a bidirectional association between gut microbiota and AKI.. · Gut microbiota is closely associated with biomarkers of nAKI.. · Manipulation of gut microbiota may improve nAKI..
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Affiliation(s)
- Kun Yang
- Division of Neonatology, Department of Pediatrics, The Affiliated Hospital of Southwest Medical University, Luzhou, China
- Department of Perinatology, The Affiliated Hospital of Southwest Medical University, Luzhou, China
- Sichuan Clinical Research Center for Birth Defects, Luzhou, China
| | - Hongxia He
- Division of Neonatology, Department of Pediatrics, The Affiliated Hospital of Southwest Medical University, Luzhou, China
- Department of Perinatology, The Affiliated Hospital of Southwest Medical University, Luzhou, China
- Sichuan Clinical Research Center for Birth Defects, Luzhou, China
| | - Wenbin Dong
- Division of Neonatology, Department of Pediatrics, The Affiliated Hospital of Southwest Medical University, Luzhou, China
- Department of Perinatology, The Affiliated Hospital of Southwest Medical University, Luzhou, China
- Sichuan Clinical Research Center for Birth Defects, Luzhou, China
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Alhusseinawi H, Sander L, Handberg A, Rasmussen RW, Kingo PS, Jensen JB, Rasmussen S. Impact of low pneumoperitoneum on renal function and acute kidney injury biomarkers during robot-assisted radical prostatectomy (RARP): a randomised clinical trial. J Robot Surg 2024; 18:31. [PMID: 38231282 PMCID: PMC10794424 DOI: 10.1007/s11701-023-01744-2] [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: 07/01/2023] [Accepted: 10/14/2023] [Indexed: 01/18/2024]
Abstract
The objective of this study was to evaluate the effect of low pneumoperitoneum pressure (Pnp) on renal function and renal injury biomarkers during robot-assisted radical prostatectomy (RARP). A single-centre, triple-blinded, randomised clinical trial was conducted with 98 patients undergoing RARP, who were assigned to either standard Pnp of 12 mmHg or low Pnp of 7 mmHg. The primary outcome was urinary neutrophil gelatinase-associated lipocalin (u-NGAL), and several other kidney injury biomarkers were assessed as secondary outcomes. Acute kidney injury (AKI) was evaluated using the Kidney Disease Improving Global Outcomes (KDIGO) criteria, the gold standard method for defining AKI. The trial was registered on ClinicalTrials.gov (NCT04755452). Patients in the low Pnp group had significantly lower levels of u-NGAL (mean difference - 39.9, 95% CI - 73.7 to - 6.1, p = 0.02) compared to the standard Pnp group. No significant differences were observed for other urinary biomarkers. Interestingly, there was a significant difference in intraoperative urine production between the groups (low Pnp median: 200 mL, IQR: 100-325 vs. standard Pnp median: 100 mL, IQR: 50-200, p = 0.01). Similarly, total postoperative urine production also varied significantly (low Pnp median: 1325 mL, IQR: 1025-1800 vs. standard Pnp median: 1000 mL, IQR: 850-1287, p = 0.001). The occurrence of AKI, as defined by the KDIGO criteria, did not differ significantly between the groups. Low Pnp during RARP resulted in lower u-NGAL levels, suggesting a potential benefit in terms of reduced renal injury. However, the lack of a notable difference in AKI as defined by the KDIGO criteria indicates that the clinical significance of this finding may be limited. Further research is needed to validate and expand on these results, ultimately defining the optimal Pnp strategy for RARP and improving patient outcomes.
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Affiliation(s)
- Hayder Alhusseinawi
- Department of Clinical Medicine, Aalborg University, Aalborg, Denmark.
- Department of Urology, Aalborg University Hospital, Aalborg, Denmark.
| | - Lotte Sander
- Department of Urology, Aalborg University Hospital, Aalborg, Denmark
| | - Aase Handberg
- Department of Clinical Medicine, Aalborg University, Aalborg, Denmark
- Department of Clinical Biochemistry, Aalborg University Hospital, Aalborg, Denmark
| | - Rikke W Rasmussen
- Department of Clinical Biochemistry, Aalborg University Hospital, Aalborg, Denmark
| | - Pernille S Kingo
- Department of Clinical Medicine, Aarhus University, Aarhus, Denmark
- Department of Urology, Aarhus University Hospital, Aarhus, Denmark
| | - Jørgen B Jensen
- Department of Clinical Medicine, Aarhus University, Aarhus, Denmark
- Department of Urology, Aarhus University Hospital, Aarhus, Denmark
| | - Sten Rasmussen
- Department of Clinical Medicine, Aalborg University, Aalborg, Denmark
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Steblaj B, Kutter APN, Stirn M, Daminet S, Major A, Zini E. Endotoxic kidney injury in Beagle dogs assessed by serum creatinine and symmetric dimethylarginine, and urinary neutrophil gelatinase-associated lipocalin and clusterin. Res Vet Sci 2023; 162:104966. [PMID: 37516042 DOI: 10.1016/j.rvsc.2023.104966] [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: 04/17/2023] [Revised: 07/12/2023] [Accepted: 07/23/2023] [Indexed: 07/31/2023]
Abstract
Sepsis of Gram negative bacterial origin results in lipopolysaccharide-induced endotoxemia. This often leads to acute kidney injury (AKI) and its recognition remains a challenge and delays treatment. As renal damage occurs before a rise in serum creatinine is detected, new early biomarkers of kidney injury need to be explored. The aim of this study was to determine changes in serum parameters of renal function and urine biomarkers of renal injury. This was a descriptive study. Endotoxemia was induced intravenously in six anaesthetized Beagles (T1). To achieve normotension, dogs received fluids (T2), followed by a continuous infusion of noradrenaline and dexmedetomidine or 0.9% NaCl (T3). Ten minutes later, the dogs received fluids (T4) and noradrenaline and dexmedetomidine or 0.9% NaCl in a crossover manner (T5). At each timepoint, blood and urine were collected for serum creatinine, urea, symmetric dimethylarginine, urine protein/creatinine (UPC) ratio, urine neutrophil-gelatinase-associated lipocalin (U-NGAL), U-NGAL/creatinine ratio, urine clusterin (U-clusterin) and U-clusterin/creatinine ratio. Data were analyzed using a mixed-effect model taking into account time and stage of veterinary AKI (VAKI). Three of six dogs had a VAKI stage ≥1; one with anuria and elevated creatinine. Serum creatinine (P < 0.001), U-NGAL/creatinine ratio (P = 0.01) and U-clusterin/creatinine ratio increased over time (P < 0.01). The UPC ratio (mean (range) 0.68 (0.35-2.3) versus 0.39 (0.15-0.71) P < 0.01) and U-NGAL (3164 pg/mL (100-147,555) versus 100 (100-14,524), P = 0.01) were higher in VAKI stage ≥1 versus stage 0, respectively. Endotoxemia induced VAKI stage ≥1 in half of the dogs. Repeated measurement of selected parameters could detect AKI early.
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Affiliation(s)
- B Steblaj
- Section of Anesthesiology, Department of Clinical Diagnostics and Services, Vetsuisse Faculty, University of Zurich, Winterthurerstrasse 258c, 8057 Zürich, Switzerland.
| | - A P N Kutter
- Section of Anesthesiology, Department of Clinical Diagnostics and Services, Vetsuisse Faculty, University of Zurich, Winterthurerstrasse 258c, 8057 Zürich, Switzerland
| | - M Stirn
- Clinical laboratory, Department of Clinical Diagnostics and Services, Vetsuisse Faculty, University of Zurich, Winterthurerstrasse 260, 8057 Zürich, Switzerland
| | - S Daminet
- Small Animal Department, Faculty of Veterinary Medicine, Ghent University, Salisburylaan 133, 9820 Merelbeke, Belgium
| | - A Major
- Clinic for Small Animal Internal Medicine, Vetsuisse Faculty, University of Zurich, Winterthurerstrasse 258c, 8057 Zürich, Switzerland
| | - E Zini
- Clinic for Small Animal Internal Medicine, Vetsuisse Faculty, University of Zurich, Winterthurerstrasse 258c, 8057 Zürich, Switzerland; Department of Animal Medicine, Production and Health, University of Padova, Agripolis, Viale dell'Università, 35020 Legnaro, Italy
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Bastos FM, Leal CRV, Vaz de Castro PAS, Vaz KKB, Oliveira KKRD, Silva Filha RD, Pereira AK, Simões E Silva AC. Tubular and glomerular biomarkers of renal tissue function in the urine of fetuses with posterior urethral valves. J Pediatr Urol 2022; 18:368.e1-368.e9. [PMID: 35400574 DOI: 10.1016/j.jpurol.2022.03.019] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/24/2022] [Revised: 03/17/2022] [Accepted: 03/19/2022] [Indexed: 11/19/2022]
Abstract
INTRODUCTION Posterior urethral valve (PUV) is a congenital malformation characterized by a membranous structure located in the prostatic portion of the male posterior urethra that obstructs the urinary flow. Efforts have been made to determine the degree of impairment of fetal kidney function in this condition. OBJECTIVE This study aimed to measure the levels of urinary biomarkers of glomerular and tubular functions in fetuses with PUV and to compare with the levels of the same molecules in healthy male premature newborns. STUDY DESIGN Urine samples from 43 fetuses with PUVs were collected and compared with urine samples from 40 healthy male newborns of the same gestational age (controls). Tubular and glomerular biomarkers levels were measured in urine samples by MILLIPLEX® assay kits. Levels of the molecules were related to creatinine (Cr) measurements at same urine samples and expressed as pg/mg Cr. Results were analysed with Graphpad Prism version 7.0 and SPSS version 20.0. RESULTS Fetuses with PUV showed a significant reduction in urine levels of Epidermal Growth Factor (EGF), Calbindin, Osteoactivin, Molecule Renal Injury 1 (KIM-1 and Factor of trefoil 3 (TFF-3) when compared to controls. On the other hand, urine levels of cystatin C and renin were higher in PUV fetuses. The levels of molecules also differed according to urine osmolality and grade of hydronephrosis. DISCUSSION Some urinary excreted molecules may indicate kidney damage in several segments along the nephron, while others may exert important functions. Mechanical and immunological mechanisms related to PUV might significantly modulate the synthesis of cytokines related to glomerular and tubular physiology, leading to alterations in urinary concentrations of those molecules. These biomarkers can be used as future diagnostic and prognostic markers in clinical practice. CONCLUSION Early kidney structural and functional impairment influenced the synthesis of glomerular and tubular molecules related to kidney physiological processes in fetuses with PUV.
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Affiliation(s)
- Fernando Macedo Bastos
- Department of Gynecology and Obstetrics, Faculty of Medicine, Federal University of Minas Gerais (UFMG), Belo Horizonte, Minas Gerais, Brazil; Interdisciplinary Laboratory of Medical Investigation, Faculty of Medicine, UFMG, Belo Horizonte, Minas Gerais, Brazil
| | - Caio Ribeiro Vieira Leal
- Interdisciplinary Laboratory of Medical Investigation, Faculty of Medicine, UFMG, Belo Horizonte, Minas Gerais, Brazil
| | | | - Katarina Keyla Brito Vaz
- Interdisciplinary Laboratory of Medical Investigation, Faculty of Medicine, UFMG, Belo Horizonte, Minas Gerais, Brazil
| | | | - Roberta da Silva Filha
- Interdisciplinary Laboratory of Medical Investigation, Faculty of Medicine, UFMG, Belo Horizonte, Minas Gerais, Brazil
| | - Alamanda Kfoury Pereira
- Department of Gynecology and Obstetrics, Faculty of Medicine, Federal University of Minas Gerais (UFMG), Belo Horizonte, Minas Gerais, Brazil
| | - Ana Cristina Simões E Silva
- Interdisciplinary Laboratory of Medical Investigation, Faculty of Medicine, UFMG, Belo Horizonte, Minas Gerais, Brazil; Department of Pediatrics, Faculty of Medicine, UFMG, Belo Horizonte, Minas Gerais, Brazil.
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Ding L, Liu Z, Wang J. Role of cystatin C in urogenital malignancy. Front Endocrinol (Lausanne) 2022; 13:1082871. [PMID: 36589819 PMCID: PMC9794607 DOI: 10.3389/fendo.2022.1082871] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/28/2022] [Accepted: 11/29/2022] [Indexed: 12/15/2022] Open
Abstract
Urogenital malignancy accounts for one of the major causes of cancer-related deaths globally. Numerous studies have investigated novel molecular markers in the blood circulation, tumor tissue, or urine in order to assist in the clinical identification of tumors at early stages, predict the response of therapeutic strategies, and give accurate prognosis assessment. As an endogenous inhibitor of lysosomal cysteine proteinases, cystatin C plays an integral role in diverse processes. A substantial number of studies have indicated that it may be such a potential promising biomarker. Therefore, this review was intended to provide a detailed overview of the role of cystatin C in urogenital malignancy.
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Affiliation(s)
- Li Ding
- Department of Urology, the Affiliated Hospital of Xuzhou Medical University, Xuzhou, Jiangsu, China
| | - Zijie Liu
- Department of Urology, Wuxi No.2 People’s Hospital, Nanjing Medical University, Wuxi, Jiangsu, China
| | - Junqi Wang
- Department of Urology, the Affiliated Hospital of Xuzhou Medical University, Xuzhou, Jiangsu, China
- *Correspondence: Junqi Wang,
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Thangaraj SS, Thiesson HC, Svenningsen P, Stubbe J, Palarasah Y, Bistrup C, Jensen BL, Mortensen LA. Mineralocorticoid receptor blockade with spironolactone has no direct effect on plasma IL-17A and injury markers in urine from kidney transplant patients. Am J Physiol Renal Physiol 2021; 322:F138-F149. [PMID: 34894724 DOI: 10.1152/ajprenal.00104.2021] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Kidney transplantation is associated with increased risk of cardiovascular morbidity. Interleukin-17A (IL-17A) mediates kidney injury. Aldosterone promotes T-helper-17 (Th-17) lymphocyte differentiation and IL-17A production through the mineralocorticoid receptor (MR). In this exploratory, post-hoc substudy, it was hypothesized that 1-year intervention with the MR antagonist spironolactone lowers IL-17A and related cytokines and reduces epithelial injury in kidney transplant recipients. Plasma and urine samples were obtained from kidney transplant recipients from a double-blind randomized clinical trial testing spironolactone (n=39) versus placebo (n=41). Plasma concentrations of cytokines IFN-γ, IL-17A, TNF-α, IL-6, IL-1β, and IL-10 were determined before and after 1-year treatment. Urine calbindin, clusterin, KIM-1, osteoactivin, TFF3, and VEGF/creatinine ratios were analyzed. Blood pressure and plasma aldosterone concentration at inclusion did not relate to plasma cytokines and injury markers. None of the cytokines changed in plasma after spironolactone intervention. Plasma IL-17A increased in the placebo group. Spironolactone induced an increase in plasma K+ (0.4 ± 0.4 mmol/L). This increase did not correlate with plasma IL-17A or urine calbindin and TFF3 changes. Ongoing treatment at inclusion with angiotensin-converting-enzyme inhibitor and/or angiotensin II receptor blockers was not associated with changed levels of IL-17A and injury markers and had no effect on the response to spironolactone. Urinary calbindin and TFF3 decreased in the spironolactone group with no difference in between-group analyses. In conclusion, irrespective of ongoing ANGII inhibition, spironolactone has no effect on plasma IL-17A and related cytokines or urinary injury markers in kidney transplant recipients.
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Affiliation(s)
- Sai Sindhu Thangaraj
- Department of Cardiovascular and Renal Research, Institute for Molecular Medicine, University of Southern Denmark, Odense, Denmark
| | - Helle Charlotte Thiesson
- Department of Nephrology, Odense University Hospital, Odense C, Denmark.,Department of Clinical Research, Faculty of Health Science, University of Southern Denmark
| | - Per Svenningsen
- Department of Cardiovascular and Renal Research, Institute for Molecular Medicine, University of Southern Denmark, Odense, Denmark
| | - Jane Stubbe
- Department of Cardiovascular and Renal Research, Institute for Molecular Medicine, University of Southern Denmark, Odense, Denmark
| | - Yaseelan Palarasah
- Department of Cancer and Inflammation Research, Institute for Molecular Medicine, University of southern Denmark, Odense C, Denmark
| | - Claus Bistrup
- Department of Nephrology, Odense University Hospital, Odense C, Denmark.,Department of Clinical Research, Faculty of Health Science, University of Southern Denmark
| | - Boye L Jensen
- Department of Cardiovascular and Renal Research, Institute for Molecular Medicine, University of Southern Denmark, Odense, Denmark
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Shen F, Liu M, Pei F, Yu L, Yang X. Role of uromodulin and complement activation in the progression of kidney disease. Oncol Lett 2021; 22:829. [PMID: 34691256 PMCID: PMC8527566 DOI: 10.3892/ol.2021.13090] [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: 02/05/2020] [Accepted: 03/26/2021] [Indexed: 11/13/2022] Open
Abstract
Uromodulin (UMOD) is a glycoprotein that is selectively expressed on the epithelial cells of the thick ascending limb of Henle's loop and the early distal renal tubule. The present study aimed to investigate whether UMOD was associated with complement activation in patients with renal diseases. In addition, its biological function was examined in vitro. The expression levels of UMOD and complement components, including C1q, C3, C4 and C3a, and membrane attack complex (MAC) in the plasma of patients with IgA nephropathy (IgAN; n=58) and lupus nephritis (LN; n=36) were detected using ELISA, which was used to determine the association between UMOD expression and complement components. In addition, a simulated hypoxia-reoxygenation (H/R) model was used to stimulate UMOD expression in mouse inner medullary collecting duct cells. Additionally, the association between UMOD expression and complement components C1q and C3d at the cellular level was identified using western blotting and immunofluorescence, respectively. It was revealed that the plasma UMOD concentration was significantly decreased in patients with IgAN and LN compared with in healthy controls, and the levels of C3a and MAC were significantly increased in the plasma of patients with IgAN and LN. Furthermore, the plasma levels of C1q, C3 and C4 in patients with LN, but not in patients with IgAN, were significantly decreased compared with in healthy controls. The plasma levels of UMOD were negatively correlated with the plasma C3a and MAC concentrations. However, the plasma levels of UMOD were significantly and positively correlated with the plasma C1q concentration, but not with that of C3 and C4. It was identified that UMOD expression started to increase after 1 h of simulated H/R, and continued to increase at 6 and 12 h. In addition, cells with lower UMOD expression had higher C3d expression in vitro. Collectively, the present results suggested that UMOD was associated with severe complement activation and may be involved in complement-mediated immune protection by inhibiting complement activation in renal disease.
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Affiliation(s)
- Fei Shen
- Department of Nephrology, Qi Lu Hospital of Shandong University, Jinan, Shandong 250012, P.R. China
| | - Maojing Liu
- Department of Nephrology, Qi Lu Hospital of Shandong University, Jinan, Shandong 250012, P.R. China
| | - Fei Pei
- Department of Nephrology, Qi Lu Hospital of Shandong University, Jinan, Shandong 250012, P.R. China
| | - Li Yu
- Department of Nephrology, Qi Lu Hospital of Shandong University, Jinan, Shandong 250012, P.R. China.,Department of Cardiovascular Surgery, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, Shandong 250012, P.R. China
| | - Xiangdong Yang
- Department of Nephrology, Qi Lu Hospital of Shandong University, Jinan, Shandong 250012, P.R. China
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Sabapathy V, Venkatadri R, Dogan M, Sharma R. The Yin and Yang of Alarmins in Regulation of Acute Kidney Injury. Front Med (Lausanne) 2020; 7:441. [PMID: 32974364 PMCID: PMC7472534 DOI: 10.3389/fmed.2020.00441] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2020] [Accepted: 07/06/2020] [Indexed: 12/16/2022] Open
Abstract
Acute kidney injury (AKI) is a major clinical burden affecting 20 to 50% of hospitalized and intensive care patients. Irrespective of the initiating factors, the immune system plays a major role in amplifying the disease pathogenesis with certain immune cells contributing to renal damage, whereas others offer protection and facilitate recovery. Alarmins are small molecules and proteins that include granulysins, high-mobility group box 1 protein, interleukin (IL)-1α, IL-16, IL-33, heat shock proteins, the Ca++ binding S100 proteins, adenosine triphosphate, and uric acid. Alarmins are mostly intracellular molecules, and their release to the extracellular milieu signals cellular stress or damage, generally leading to the recruitment of the cells of the immune system. Early studies indicated a pro-inflammatory role for the alarmins by contributing to immune-system dysregulation and worsening of AKI. However, recent developments demonstrate anti-inflammatory mechanisms of certain alarmins or alarmin-sensing receptors, which may participate in the prevention, resolution, and repair of AKI. This dual function of alarmins is intriguing and has confounded the role of alarmins in AKI. In this study, we review the contribution of various alarmins to the pathogenesis of AKI in experimental and clinical studies. We also analyze the approaches for the therapeutic utilization of alarmins for AKI.
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Affiliation(s)
| | | | | | - Rahul Sharma
- Division of Nephrology, Department of Medicine, Center for Immunity, Inflammation, and Regenerative Medicine (CIIR), University of Virginia, Charlottesville, VA, United States
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Zhu K, Song H, Zhang Z, Ma B, Bao X, Zhang Q, Jin J. Acute kidney injury in solitary kidney patients after partial nephrectomy: incidence, risk factors and prediction. Transl Androl Urol 2020; 9:1232-1243. [PMID: 32676406 PMCID: PMC7354300 DOI: 10.21037/tau.2020.03.45] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Background To analyze the incidence and risk factors of acute kidney injury (AKI) after partial nephrectomy (PN) in patients with solitary kidney, and to build AKI prediction models using logistic regression and machine learning (ML) approaches. Methods Clinical data of 87 solitary kidney patients with renal mass who received PN from January 2003 to March 2019 were collected. The diagnosis of AKI was based on KDIGO criteria. Logistic regression analysis and ML method were used to build prediction models. Results AKI developed in 52 (59.8%) patients. The logistic regression model had three variables: ischemia time (P=0.003), surgery time (P=0.001) and preoperative fasted blood glucose level (FBG) (P=0.049). The area under curve (AUC) was 0.826, with the specificity and sensitivity of optimal threshold value 82.9% and 69.2%. The ML model had the following variables: ischemia time, surgery time, age, FBG, mean arterial pressure (MAP), colloid, crystalloid, etc. XGBoost model has the best prediction performance. The AUC was 0.749, lower than that of the logistic regression model with no statistical difference (P=0.258), with the specificity and sensitivity 62.9% and 84.6%, respectively. Conclusions The incidence of AKI after PN in patients with a solitary kidney was relatively high, it was associated with longer ischemia time, surgery time and higher FBG level, etc. The performance of ML model had no significant difference with logistic regression model. Prospective studies with larger sample sizes are awaited to test and verify our research findings.
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Affiliation(s)
- Kun Zhu
- Department of Urology, Peking University First Hospital, Beijing 100034, China.,Institute of Urology, Peking University, Beijing 100034, China.,National Research Center for Genitourinary Oncology, Beijing 100034, China
| | - Haifeng Song
- Department of Urology, Peking University First Hospital, Beijing 100034, China.,Institute of Urology, Peking University, Beijing 100034, China.,National Research Center for Genitourinary Oncology, Beijing 100034, China
| | - Zhenan Zhang
- Department of Urology, Peking University First Hospital, Beijing 100034, China.,Institute of Urology, Peking University, Beijing 100034, China.,National Research Center for Genitourinary Oncology, Beijing 100034, China
| | - Binglei Ma
- Department of Urology, Peking University First Hospital, Beijing 100034, China.,Institute of Urology, Peking University, Beijing 100034, China.,National Research Center for Genitourinary Oncology, Beijing 100034, China
| | - Xiaoyuan Bao
- Medical Informatics Center, Peking University Health Science Center, Beijing 100191, China
| | - Qian Zhang
- Department of Urology, Peking University First Hospital, Beijing 100034, China.,Institute of Urology, Peking University, Beijing 100034, China.,National Research Center for Genitourinary Oncology, Beijing 100034, China
| | - Jie Jin
- Department of Urology, Peking University First Hospital, Beijing 100034, China.,Institute of Urology, Peking University, Beijing 100034, China.,National Research Center for Genitourinary Oncology, Beijing 100034, China
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