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Wang R, Wu S, Wang J, Li W, Cui J, Yao Z. A nonlinear correlation between the serum uric acid to creatinine ratio and the prevalence of hypertension: a large cross-sectional population-based study. Ren Fail 2024; 46:2296002. [PMID: 38186345 PMCID: PMC10776046 DOI: 10.1080/0886022x.2023.2296002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2023] [Accepted: 12/12/2023] [Indexed: 01/09/2024] Open
Abstract
OBJECTIVE To explore the relationship between the serum uric acid to creatinine (UA/Cr) ratio and the prevalence of hypertension. METHODS In this cross-sectional study, we included 8571 individuals from the China Health and Nutrition Survey. Logistic regression analysis and restricted cubic spline (RCS) were used to analyze the relationship between the UA/Cr ratio and hypertension. RESULTS Compared with individuals without hypertension, individuals with hypertension had higher UA/Cr ratios. Multivariate logistic regression analysis showed that a higher UA/Cr ratio was closely related to a higher risk of hypertension (as a continuous variable, OR: 1.054, 95% CI: 1.014-1.095, p = 0.007; as a categorical variable, Q3 vs. Q1, OR: 1.183, 95% CI: 1.011-1.384, p = 0.035; Q4 vs. Q1, OR: 1.347, 95% CI: 1.146-1.582, p < 0.001). Subgroup analysis revealed that the correlation between the UA/Cr ratio and hypertension risk was stable in all subgroups except for the subgroup with diabetes and the subgroup with a BMI ≥ 28 kg/m2 (p < 0.05). Sensitivity analysis confirmed the robustness of the relationship between a higher UA/Cr ratio and a higher risk of hypertension (p < 0.05). The RCS showed that the UA/Cr ratio was nonlinearly related to hypertension risk. Further threshold effect showed that only a UA/Cr ratio less than 5.0 was related to hypertension risk (OR: 1.178, 95% CI: 1.086-1.278, p < 0.001), and the 2-piecewise linear regression model was superior to the 1-line linear regression model (p < 0.05). CONCLUSION The UA/Cr ratio was associated with the prevalence of hypertension.
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Affiliation(s)
- Ru Wang
- Department of Cardiology, Tianjin Union Medical Center, Tianjin, China
- The Institute of Translational Medicine, Tianjin Union Medical Center of Nankai University, Tianjin, China
| | - Shuxing Wu
- Department of Cardiology, Tianjin Union Medical Center, Tianjin, China
| | - Jing Wang
- Department of Cardiology, Tianjin Union Medical Center, Tianjin, China
| | - Wenting Li
- Department of Cardiology, Tianjin Union Medical Center, Tianjin, China
| | - Jian Cui
- Department of Cardiology, Tianjin Union Medical Center, Tianjin, China
| | - Zhuhua Yao
- Department of Cardiology, Tianjin Union Medical Center, Tianjin, China
- The Institute of Translational Medicine, Tianjin Union Medical Center of Nankai University, Tianjin, China
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Fu EL, Levey AS, Coresh J, Grams ME, Faucon AL, Elinder CG, Dekker FW, Delanaye P, Inker LA, Carrero JJ. Accuracy of GFR estimating equations based on creatinine, cystatin C or both in routine care. Nephrol Dial Transplant 2024; 39:694-706. [PMID: 37813817 DOI: 10.1093/ndt/gfad219] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2023] [Indexed: 10/11/2023] Open
Abstract
BACKGROUND New equations to estimate glomerular filtration rate based on creatinine (eGFRcr), cystatin C (eGFRcys) or both (eGFRcr-cys) have been developed by the Chronic Kidney Disease Epidemiology Collaboration (CKD-EPI) and the European Kidney Function Consortium (EKFC). There is a need to evaluate the performance of these equations in diverse European settings to inform implementation decisions, especially among people with key comorbid conditions. METHODS We performed a cross-sectional study including 6174 adults referred for single-point plasma clearance of iohexol in Stockholm, Sweden, with 9579 concurrent measurements of creatinine and cystatin C. We assessed the performance of the CKD-EPI 2009/2012/2021, EKFC 2021/2023, revised Lund-Malmö (RLM) 2011 and Caucasian, Asian, Pediatric and Adult (CAPA) 2014 equations against measured GFR (mGFR). RESULTS Mean age was 56 years, median mGFR was 62 mL/min/1.73 m2 and 40% were female. Comorbid conditions were common: cardiovascular disease (30%), liver disease (28%), diabetes (26%) and cancer (26%). All eGFRcr-cys equations had small bias and P30 (the percentage of estimated values within 30% of mGFR) close to 90%, and performed better than eGFRcr or eGFRcys equations. Among eGFRcr equations, CKD-EPI 2009 and CKD-EPI 2021 showed larger bias and lower P30 than EKFC 2021 and RLM. There were no meaningful differences in performance across eGFRcys equations. Findings were consistent across comorbid conditions, and eGFRcr-cys equations showed good performance in patients with liver disease, cancer and heart failure. CONCLUSIONS In conclusion, eGFRcr-cys equations performed best, with minimal variation among equations in this Swedish cohort. The lower performance of CKD-EPI eGFRcr equations compared with EKFC and RLM may reflect differences in population characteristics and mGFR methods. Implementing eGFRcr equations will require a trade-off between accuracy and uniformity across regions.
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Affiliation(s)
- Edouard L Fu
- Division of Pharmacoepidemiology and Pharmacoeconomics, Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, MA, USA
- Department of Medical Epidemiology and Biostatistics, Karolinska Institute, Stockholm, Sweden
- Department of Clinical Epidemiology, Leiden University Medical Center, Leiden, The Netherlands
| | - Andrew S Levey
- Division of Nephrology, Department of Internal Medicine, Tufts Medical Center, Boston, MA, USA
| | - Josef Coresh
- Department of Epidemiology, Johns Hopkins University Bloomberg School of Public Health, Baltimore, MD, USA
| | - Morgan E Grams
- Division of Precision Medicine, Department of Medicine, New York University Grossman School of Medicine, New York, NY, USA
| | - Anne-Laure Faucon
- Department of Medical Epidemiology and Biostatistics, Karolinska Institute, Stockholm, Sweden
- INSERM UMR 1018, Department of Clinical Epidemiology, Paris-Saclay University, Paris, France
| | - Carl-Gustaf Elinder
- Division of Renal Medicine, Department of Clinical Intervention, and Technology, Karolinska University Hospital and Karolinska Institute, Stockholm, Sweden
| | - Friedo W Dekker
- Department of Clinical Epidemiology, Leiden University Medical Center, Leiden, The Netherlands
| | - Pierre Delanaye
- Department of Nephrology-Dialysis-Transplantation, University of Liège, CHU Sart Tilman, Liège, Belgium
- Department of Nephrology-Dialysis-Apheresis, Hôpital Universitaire Carémeau, Nîmes, France
| | - Lesley A Inker
- Division of Nephrology, Department of Internal Medicine, Tufts Medical Center, Boston, MA, USA
| | - Juan-Jesus Carrero
- Department of Medical Epidemiology and Biostatistics, Karolinska Institute, Stockholm, Sweden
- Division of Nephrology, Department of Clinical Sciences, Danderyd Hospital, Karolinska Institutet, Stockholm, Sweden
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Wu Y, Allegaert K, Flint RB, Goulooze SC, Välitalo PAJ, de Hoog M, Mulla H, Sherwin CMT, Simons SHP, Krekels EHJ, Knibbe CAJ, Völler S. When will the Glomerular Filtration Rate in Former Preterm Neonates Catch up with Their Term Peers? Pharm Res 2024:10.1007/s11095-024-03677-3. [PMID: 38472610 DOI: 10.1007/s11095-024-03677-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2023] [Accepted: 02/10/2024] [Indexed: 03/14/2024]
Abstract
AIMS Whether and when glomerular filtration rate (GFR) in preterms catches up with term peers is unknown. This study aims to develop a GFR maturation model for (pre)term-born individuals from birth to 18 years of age. Secondarily, the function is applied to data of different renally excreted drugs. METHODS We combined published inulin clearance values and serum creatinine (Scr) concentrations in (pre)term born individuals throughout childhood. Inulin clearance was assumed to be equal to GFR, and Scr to reflect creatinine synthesis rate/GFR. We developed a GFR function consisting of GFRbirth (GFR at birth), and an Emax model dependent on PNA (with GFRmax, PNA50 (PNA at which half ofGFR max is reached) and Hill coefficient). The final GFR model was applied to predict gentamicin, tobramycin and vancomycin concentrations. RESULT In the GFR model, GFRbirth varied with birthweight linearly while in the PNA-based Emax equation, GA was the best covariate for PNA50, and current weight for GFRmax. The final model showed that for a child born at 26 weeks GA, absolute GFR is 18%, 63%, 80%, 92% and 96% of the GFR of a child born at 40 weeks GA at 1 month, 6 months, 1 year, 3 years and 12 years, respectively. PopPK models with the GFR maturation equations predicted concentrations of renally cleared antibiotics across (pre)term-born neonates until 18 years well. CONCLUSIONS GFR of preterm individuals catches up with term peers at around three years of age, implying reduced dosages of renally cleared drugs should be considered below this age.
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Affiliation(s)
- Yunjiao Wu
- Division of Systems Pharmacology and Pharmacy, Leiden Academic Centre for Drug Research, Leiden University, 2333CC, Leiden, The Netherlands
| | - Karel Allegaert
- Department of Hospital Pharmacy, Erasmus University Medical Center, Rotterdam, The Netherlands
- Department of Development and Regeneration, and Department of Pharmaceutical and Pharmacological Sciences, KU Leuven, Leuven, Belgium
| | - Robert B Flint
- Department of Hospital Pharmacy, Erasmus University Medical Center, Rotterdam, The Netherlands
- Department of Pediatrics, Division of Neonatology, Erasmus MC Sophia Children's Hospital, Rotterdam, The Netherlands
| | - Sebastiaan C Goulooze
- Leiden Experts On Advanced Pharmacokinetics and Pharmacodynamics (LAP&P), Leiden, The Netherlands
| | - Pyry A J Välitalo
- School of Pharmacy, University of Eastern Finland, Yliopistonranta 1 C, 70210, Kuopio, Finland
- Finnish Medicines Agency, Hallituskatu 12-14, 70100, Kuopio, Finland
| | - Matthijs de Hoog
- Department of Neonatal and Pediatric Intensive Care, Division of Pediatric Intensive Care, Erasmus MC Sophia Children's Hospital, Rotterdam, The Netherlands
| | - Hussain Mulla
- Department of Pharmacy, University Hospitals of Leicester, Glenfield Hospital, Leicester, LE39QP, England
| | - Catherine M T Sherwin
- Department of Pediatrics, Wright State University Boonshoft School of Medicine/Dayton Children's Hospital, One Children's Plaza, Dayton, OH, USA
| | - Sinno H P Simons
- Department of Pediatrics, Division of Neonatology, Erasmus MC Sophia Children's Hospital, Rotterdam, The Netherlands
| | - Elke H J Krekels
- Division of Systems Pharmacology and Pharmacy, Leiden Academic Centre for Drug Research, Leiden University, 2333CC, Leiden, The Netherlands
- Certara Inc, Princeton, NJ, USA
| | - Catherijne A J Knibbe
- Division of Systems Pharmacology and Pharmacy, Leiden Academic Centre for Drug Research, Leiden University, 2333CC, Leiden, The Netherlands
- Department of Pediatrics, Division of Neonatology, Erasmus MC Sophia Children's Hospital, Rotterdam, The Netherlands
- Department of Clinical Pharmacy, St Antonius Hospital, Nieuwegein, The Netherlands
| | - Swantje Völler
- Division of Systems Pharmacology and Pharmacy, Leiden Academic Centre for Drug Research, Leiden University, 2333CC, Leiden, The Netherlands.
- Department of Pediatrics, Division of Neonatology, Erasmus MC Sophia Children's Hospital, Rotterdam, The Netherlands.
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van Mever M, He B, van Veen M, Slaats J, Buijs MM, Wieringa JE, Hankemeier T, de Winter P, Ramautar R. Capillary electrophoresis-mass spectrometry for creatinine analysis in residual clinical plasma samples and comparison with gold standard assay. Electrophoresis 2024. [PMID: 38456383 DOI: 10.1002/elps.202300264] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2023] [Revised: 02/20/2024] [Accepted: 02/25/2024] [Indexed: 03/09/2024]
Abstract
When hospitalized, infants, particularly preterm, are often subjected to multiple painful needle procedures to collect sufficient blood for metabolic screening or diagnostic purposes using standard clinical tests. For example, at least 100 µL of whole blood is required to perform one creatinine plasma measurement with enzymatic colorimetric assays. As capillary electrophoresis-mass spectrometry (CE-MS) utilizing a sheathless porous tip interface only requires limited amounts of sample for in-depth metabolic profiling studies, the aim of this work was to assess the utility of this method for the determination of creatinine in low amounts of plasma using residual blood samples from adults and infants. By using a starting amount of 5 µL of plasma and an injection volume of only 6.7 nL, a detection limit (S/N = 3) of 30 nM could be obtained for creatinine, and intra- and interday precisions (for peak area ratios) were below 3.2%. To shorten the electrophoretic separation time, a multi-segment injection (MSI) strategy was employed to analyze up to seven samples in one electrophoretic run. The findings obtained by CE-MS for creatinine in pretreated plasma were compared with the values acquired by an enzymatic colorimetric assay typically used in clinical laboratories for this purpose. The comparison revealed that CE-MS could be used in a reliable way for the determination of creatinine in residual plasma samples from infants and adults. Nevertheless, to underscore the clinical efficacy of this method, a subsequent investigation employing an expanded pool of plasma samples is imperative. This will not only enhance the method's diagnostic utility but also contribute to minimizing both the amount and frequency of blood collection required for diagnostic purposes.
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Affiliation(s)
- Marlien van Mever
- Metabolomics and Analytics Centre, Leiden Academic Centre for Drug Research (LACDR), Leiden University, Leiden, The Netherlands
| | - Bingshu He
- Metabolomics and Analytics Centre, Leiden Academic Centre for Drug Research (LACDR), Leiden University, Leiden, The Netherlands
| | - Mariam van Veen
- Department of Pediatrics, Spaarne Gasthuis, Haarlem/Hoofddorp, The Netherlands
- Amsterdam Universitair Medisch Centrum, Amsterdam, The Netherlands
| | - Jeroen Slaats
- Atalmedial Diagnostic Centers, Amsterdam, The Netherlands
| | | | - Joanne E Wieringa
- Department of Pediatrics, Spaarne Gasthuis, Haarlem/Hoofddorp, The Netherlands
| | - Thomas Hankemeier
- Metabolomics and Analytics Centre, Leiden Academic Centre for Drug Research (LACDR), Leiden University, Leiden, The Netherlands
| | - Peter de Winter
- Department of Pediatrics, Spaarne Gasthuis, Haarlem/Hoofddorp, The Netherlands
- Leuven Child and Health Institute, KU Leuven, Leuven, Belgium
- Department of Development and Regeneration, KU Leuven, Leuven, Belgium
| | - Rawi Ramautar
- Metabolomics and Analytics Centre, Leiden Academic Centre for Drug Research (LACDR), Leiden University, Leiden, The Netherlands
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Hu J, Murugiah K, Xin X, Sawano M, Lu Y, Wilson FP, Masoudi FA, Messenger JC, Krumholz HM, Huang C. Heterogeneity in the Prognosis of Acute Kidney Injury Following Percutaneous Coronary Intervention. J Am Heart Assoc 2024; 13:e033649. [PMID: 38390832 PMCID: PMC10944032 DOI: 10.1161/jaha.123.033649] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/22/2023] [Accepted: 01/30/2024] [Indexed: 02/24/2024]
Affiliation(s)
- Jiun‐Ruey Hu
- Center for Outcomes Research and EvaluationYale‐New Haven HospitalNew HavenCTUSA
- Section of Cardiovascular Medicine, Department of Internal MedicineYale School of MedicineNew HavenCTUSA
| | - Karthik Murugiah
- Center for Outcomes Research and EvaluationYale‐New Haven HospitalNew HavenCTUSA
- Section of Cardiovascular Medicine, Department of Internal MedicineYale School of MedicineNew HavenCTUSA
| | - Xin Xin
- Center for Outcomes Research and EvaluationYale‐New Haven HospitalNew HavenCTUSA
| | - Mitsuaki Sawano
- Center for Outcomes Research and EvaluationYale‐New Haven HospitalNew HavenCTUSA
| | - Yuan Lu
- Center for Outcomes Research and EvaluationYale‐New Haven HospitalNew HavenCTUSA
| | - F. Perry Wilson
- Section of Nephrology, Department of MedicineYale School of MedicineNew HavenCTUSA
| | - Frederick A. Masoudi
- Ascension HealthSt. LouisMOUSA
- Division of Cardiology, Department of MedicineUniversity of Texas at Austin Dell Medical SchoolAustinTXUSA
| | - John C. Messenger
- Division of Cardiology, Department of MedicineUniversity of Colorado School of MedicineAuroraCOUSA
| | - Harlan M. Krumholz
- Center for Outcomes Research and EvaluationYale‐New Haven HospitalNew HavenCTUSA
- Section of Cardiovascular Medicine, Department of Internal MedicineYale School of MedicineNew HavenCTUSA
- Department of Health Policy and ManagementYale School of Public HealthNew HavenCTUSA
| | - Chenxi Huang
- Center for Outcomes Research and EvaluationYale‐New Haven HospitalNew HavenCTUSA
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6
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Nyman U, Björk J, Delanaye P, Lahens A, Pottel H, Vidal-Petiot E, Flamant M. Rescaling creatinine makes GFR estimation equations generally applicable across populations - validation results for the Lund-Malmö equation in a French cohort of sub-Saharan ancestry. Clin Chem Lab Med 2024; 62:421-427. [PMID: 37768854 DOI: 10.1515/cclm-2023-0496] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2023] [Accepted: 09/18/2023] [Indexed: 09/30/2023]
Abstract
OBJECTIVES To make glomerular filtration rate (GFR) estimating equations applicable across populations with different creatinine generation by using rescaled serum creatinine (sCr/Q) where sCr represents the individual creatinine level and Q the average creatinine value in healthy persons of the same population. METHODS GFR measurements (mGFR, plasma clearance of 51Cr-EDTA) were conducted in 964 adult Black Europeans. We established the re-expressed Lund-Malmö revised equation (r-LMR) by replacing serum creatinine (sCr) with rescaled creatinine sCr/Q. We evaluated the r-LMR equation based on Q-values of White Europeans (r-LMRQ-white; Q-values females: 62 μmol/L, males: 80 μmol/L) and Black Europeans (r-LMRQ-Black; Q-values females: 65 μmol/L, males: 90 μmol/L), and the European Kidney Function Consortium equation (EKFCQ-White and EKFCQ-Black) regarding bias, precision (interquartile range, IQR) and accuracy (percentage of estimates within ±10 % [P10] and ±30 % [P30] of mGFR). RESULTS Median bias of r-LMRQ-White/r-LMRQ-Black/EKFCQ-White/EKFCQ-Black were -9.1/-4.5/-6.3/-0.9 mL/min/1.73 m2, IQR 14.7/14.5/14.5/15.6 mL/min/1.73 m2, P10 25.1 %/34.8 %/30.3 %/37.2 % and P30 74.2 %/84.1 %/80.6 %/83.6 %. The improvement of bias and accuracy when using proper Q-values was most pronounced in men. Similar improvements were obtained above and below mGFR 60 mL/min/1.73 m2 and at various age and BMI intervals, except for BMI<20 kg/m2 where bias increased, and accuracy decreased. CONCLUSIONS GFR estimating equations may be re-expressed to include rescaled creatinine (sCr/Q) and used across populations with different creatinine generation if population-specific average creatinine concentrations (Q-values) for healthy persons are established.
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Affiliation(s)
- Ulf Nyman
- Department of Translational Medicine, Division of Medical Radiology, Lund University, Malmö, Sweden
| | - Jonas Björk
- Division of Occupational and Environmental Medicine, Lund University, Lund, Sweden
- Clinical Studies Sweden, Forum South, Skåne University Hospital, Lund, Sweden
| | - Pierre Delanaye
- Department of Nephrology-Dialysis-Transplantation, University of Liège, CHU Sart Tilman, Liège, Belgium
- Department of Nephrology-Dialysis-Apheresis, Hôpital Universitaire Carémeau, Nîmes, France
| | - Alexandre Lahens
- Assistance Publique-Hôpitaux de Paris, Renal Physiology Unit, Bichat Hospital Paris, France
| | - Hans Pottel
- Department of Public Health and Primary Care, KU Leuven Campus Kulak Kortrijk, Kortrijk, Belgium
| | - Emmanuelle Vidal-Petiot
- Assistance Publique-Hôpitaux de Paris, Renal Physiology Unit, Bichat Hospital Paris, France
- Université Paris Cité and Université Sorbonne Paris Nord, INSERM U1148, LVTS Paris, France
| | - Martin Flamant
- Assistance Publique-Hôpitaux de Paris, Renal Physiology Unit, Bichat Hospital Paris, France
- Université Paris Cité, INSERM U1149, Center for Research on Inflammation Paris, France
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Luo H, Wen J, Yang H, Ran Q, Hou Y. Allograft function predicts mortality in kidney transplant recipients with severe COVID-19: a paradoxical risk factor. Front Immunol 2024; 15:1335148. [PMID: 38415244 PMCID: PMC10896886 DOI: 10.3389/fimmu.2024.1335148] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2023] [Accepted: 01/29/2024] [Indexed: 02/29/2024] Open
Abstract
Introduction Kidney transplant recipients (KTRs) are at a higher risk of severe coronavirus disease (COVID-19) because of their immunocompromised status. However, the effect of allograft function on the prognosis of severe COVID-19 in KTRs is unclear. In this study, we aimed to analyze the correlation between pre-infection allograft function and the prognosis of severe COVID-19 in KTRs. Methods This retrospective cohort study included 82 patients who underwent kidney transplantation at the Sichuan Provincial Peoples Hospital between October 1, 2014 and December 1, 2022 and were diagnosed with severe COVID-19. The patients were divided into decreased eGFR and normal eGFR groups based on the allograft function before COVID-19 diagnosis (n=32 [decreased eGFR group], mean age: 43.00 years; n=50 [normal eGFR group, mean age: 41.88 years). We performed logistic regression analysis to identify risk factors for death in patients with severe COVID-19. The nomogram was used to visualize the logistic regression model results. Results The mortality rate of KTRs with pre-infection allograft function insufficiency in the decreased eGFR group was significantly higher than that of KTRs in the normal eGFR group (31.25% [10/32] vs. 8.00% [4/50], P=0.006). Pre-infection allograft function insufficiency (OR=6.96, 95% CI: 1.4633.18, P=0.015) and maintenance of a mycophenolic acid dose >1500 mg/day before infection (OR=7.59, 95% CI: 1.0853.20, P=0.041) were independent risk factors, and the use of nirmatrelvir/ritonavir before severe COVID-19 (OR=0.15, 95% CI: 0.030.72, P=0.018) was a protective factor against death in severe COVID-19. Conclusions Pre-infection allograft function is a good predictor of death in patients with severe COVID-19. Allograft function was improved after treatment for severe COVID-19, which was not observed in patients with non-severe COVID-19.
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Affiliation(s)
- Han Luo
- Department of Organ Transplantation, Sichuan Provincial Peoples Hospital, University of Electronic Science and Technology of China, Chengdu, China
- School of Medicine, University of Electronic Science and Technology of China, Chengdu, China
| | - Jingyu Wen
- Department of Medical Insurance, Sichuan Provincial Peoples Hospital, University of Electronic Science and Technology of China, Chengdu, China
| | - Hongji Yang
- Department of Organ Transplantation, Sichuan Provincial Peoples Hospital, University of Electronic Science and Technology of China, Chengdu, China
- School of Medicine, University of Electronic Science and Technology of China, Chengdu, China
- Clinical Immunology Translational Medicine Key Laboratory of Sichuan Province & Organ Transplantation Center, Sichuan Academy of Medical Sciences and Sichuan Provincial Peoples Hospital, Chengdu, China
| | - Qing Ran
- Department of Organ Transplantation, Sichuan Provincial Peoples Hospital, University of Electronic Science and Technology of China, Chengdu, China
- School of Medicine, University of Electronic Science and Technology of China, Chengdu, China
| | - Yifu Hou
- Department of Organ Transplantation, Sichuan Provincial Peoples Hospital, University of Electronic Science and Technology of China, Chengdu, China
- Clinical Immunology Translational Medicine Key Laboratory of Sichuan Province & Organ Transplantation Center, Sichuan Academy of Medical Sciences and Sichuan Provincial Peoples Hospital, Chengdu, China
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Roussel M, Bacchetta J, Sellier-Leclerc AL, Lemoine S, De Mul A, Derain Dubourg L. Is shrunken pore syndrome also a reality in children? J Intern Med 2024; 295:253-258. [PMID: 38058272 DOI: 10.1111/joim.13749] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/08/2023]
Abstract
BACKGROUND Shrunken pore syndrome (SPS) is defined as cystatin C-based-eGFR (eGFRcys)/creatinine-based-eGFR (eGFRcreat) <0.6 or 0.7 and is associated with an increased cardiovascular risk. SPS has been described in children, but no link to increased morbi-mortality was demonstrated. OBJECTIVES Study the prevalence of SPS in a pediatric population using several glomerular filtration rate (GFR) estimating formulas and measured GFR and evaluate the potential link with cardiovascular risk. METHODS In 307 renal risk pediatric patients, we studied prevalence of SPS either with CKiDU25creat and cyst or with FAScreat and cyst and EKFCcreat. The characteristics of patients with SPS (defined with Full-age spectrum equation (FAS) and/or European Kidney Function Consortium equation (EKFC)) were compared. RESULTS AND CONCLUSION The prevalence of SPS varies widely depending on the threshold and the formulas used. Higher C-reactive protein (CRP) and phosphate levels and smaller size are observed in children with SPS defined with FAS and/or EKFC and might be associated with long-term increased cardiovascular risk. Further studies in wider general pediatric populations are warranted.
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Affiliation(s)
- Mathilde Roussel
- Service de Néphrologie Rhumatologie et Dermatologie Pédiatrique, Centre de Référence des Maladies Rénales Rares, filière maladies rares ORKID and ERKNet, Hospices Civils de Lyon, Bron, France
| | - Justine Bacchetta
- Service de Néphrologie Rhumatologie et Dermatologie Pédiatrique, Centre de Référence des Maladies Rénales Rares, filière maladies rares ORKID and ERKNet, Hospices Civils de Lyon, Bron, France
- Faculté de Médecine Lyon Est, Université de Lyon, Lyon, France
- INSERM U1033, Lyon, France
| | - Anne Laure Sellier-Leclerc
- Service de Néphrologie Rhumatologie et Dermatologie Pédiatrique, Centre de Référence des Maladies Rénales Rares, filière maladies rares ORKID and ERKNet, Hospices Civils de Lyon, Bron, France
| | - Sandrine Lemoine
- Faculté de Médecine Lyon Est, Université de Lyon, Lyon, France
- Service de Néphrologie, Dialyse, Hypertension et Exploration Fonctionnelle Rénale, Centre de Référence des Maladies Rénales Rares MAREGE, filière maladies rares ORKID, Hôpital E. Herriot, Hospices Civils de Lyon, Lyon, France
- INSERM CARMEN 1060 IRIS Team, Lyon, France
| | - Aurélie De Mul
- Service de Néphrologie Rhumatologie et Dermatologie Pédiatrique, Centre de Référence des Maladies Rénales Rares, filière maladies rares ORKID and ERKNet, Hospices Civils de Lyon, Bron, France
- Faculté de Médecine Lyon Est, Université de Lyon, Lyon, France
- Service de Néphrologie, Dialyse, Hypertension et Exploration Fonctionnelle Rénale, Centre de Référence des Maladies Rénales Rares MAREGE, filière maladies rares ORKID, Hôpital E. Herriot, Hospices Civils de Lyon, Lyon, France
| | - Laurence Derain Dubourg
- Faculté de Médecine Lyon Est, Université de Lyon, Lyon, France
- Service de Néphrologie, Dialyse, Hypertension et Exploration Fonctionnelle Rénale, Centre de Référence des Maladies Rénales Rares MAREGE, filière maladies rares ORKID, Hôpital E. Herriot, Hospices Civils de Lyon, Lyon, France
- University of Lyon 1; CNRS UMR 5305, Lyon, France
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Legg A, Roberts JA, Roberts MA, Cass A, Davies J, Tong SYC, Davis JS. Avoiding misclassification of acute kidney injury: Timing is everything. Nephrology (Carlton) 2024; 29:100-104. [PMID: 37820650 PMCID: PMC10952645 DOI: 10.1111/nep.14246] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2023] [Revised: 08/31/2023] [Accepted: 09/26/2023] [Indexed: 10/13/2023]
Abstract
Accurate detection of acute kidney injury (AKI) in clinical trials is important. Using a 'baseline' creatinine from trial enrolment may not be ideal for understanding a participant's true baseline kidney function. We aimed to determine if a 'pre-trial baseline creatinine' resulted in comparable creatinine concentrations to a 'trial baseline creatinine', and how the timing of baseline creatinine affected the incidence of AKI in the Combination Antibiotic therapy for MEthicillin Resistant Staphylococcus aureus (CAMERA2) randomised trial. Study sites retrospectively collected a pre-trial baseline creatinine from up to 1 year before CAMERA2 trial enrolment ideally when the patient was medically stable. Baseline creatinine from CAMERA2 (the 'trial baseline creatinine'), was the highest creatinine measurement in the 24 h preceding trial randomisation. We used Wilcoxon sign rank test to compare pre-trial and trial baseline creatinine concentrations. We included 217 patients. The median pre-trial baseline creatinine was significantly lower than the median trial baseline creatinine (82 μmol/L [IQR 65-104 μmol/L] versus 86 μmol/L [IQR 66-152 μmol/L] p = <0.001). Using pre-trial baseline creatinine, 48 of 217 patients (22%) met criteria for an AKI at CAMERA2 enrolment and only 5 of these patients met criteria for an AKI using the CAMERA2 study protocol (using baseline creatinine from trial entry). Using a baseline creatinine from the time of trial enrolment failed to detect many patients with AKI. Trial protocols should consider the optimal timing of baseline creatinine and the limitations of using a baseline creatinine during an acute illness.
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Affiliation(s)
- Amy Legg
- Menzies School of Health ResearchCharles Darwin UniversityDarwinNorthern TerritoryAustralia
- Herston Infectious Diseases Institute, Metro North HealthBrisbaneQueenslandAustralia
| | - Jason A. Roberts
- Herston Infectious Diseases Institute, Metro North HealthBrisbaneQueenslandAustralia
- Faculty of MedicineUniversity of Queensland Centre for Clinical Research (UQCCR)BrisbaneQueenslandAustralia
- Departments of Intensive Care Medicine and PharmacyRoyal Brisbane and Women's HospitalBrisbaneQueenslandAustralia
- Nîmes University Hospital, Division of Anaesthesiology Critical Care Emergency and Pain MedicineUniversity of MontpellierNîmesFrance
| | - Matthew A. Roberts
- Eastern Health Clinical SchoolMonash UniversityBox HillVictoriaAustralia
| | - Alan Cass
- Menzies School of Health ResearchCharles Darwin UniversityDarwinNorthern TerritoryAustralia
| | - Jane Davies
- Menzies School of Health ResearchCharles Darwin UniversityDarwinNorthern TerritoryAustralia
- Department of Infectious DiseasesRoyal Darwin HospitalDarwinNorthern TerritoryAustralia
| | - Steven Y. C. Tong
- Victorian Infectious Diseases Service, The Royal Melbourne HospitalPeter Doherty Institute for Infection and ImmunityMelbourneVictoriaAustralia
- Department of Infectious DiseasesThe University of Melbourne at the Peter Doherty Institute for Infection and ImmunityMelbourneAustralia
| | - Joshua S. Davis
- Menzies School of Health ResearchCharles Darwin UniversityDarwinNorthern TerritoryAustralia
- School of Medicine and Public HealthThe University of NewcastleNewcastleNew South WalesAustralia
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Kiernan EA, Hu D, Philbrook HT, Ix JH, Bonventre JV, Coca SG, Moledina DG, Fried LF, Shlipak MG, Parikh CR. Urinary Biomarkers and Kidney Injury in VA NEPHRON-D: Phenotyping Acute Kidney Injury in Clinical Trials. Am J Kidney Dis 2024; 83:151-161. [PMID: 37726051 PMCID: PMC10841767 DOI: 10.1053/j.ajkd.2023.07.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2022] [Revised: 06/23/2023] [Accepted: 07/02/2023] [Indexed: 09/21/2023]
Abstract
RATIONALE & OBJECTIVE Urinary biomarkers of injury, inflammation, and repair may help phenotype acute kidney injury (AKI) observed in clinical trials. We evaluated the differences in biomarkers between participants randomized to monotherapy or to combination renin-angiotensin-aldosterone system (RAAS) blockade in VA NEPHRON-D, where an increased proportion of observed AKI was acknowledged in the combination arm. STUDY DESIGN Longitudinal analysis. SETTING & PARTICIPANTS A substudy of the VA NEPHRON-D trial. PREDICTOR Primary exposure was the treatment arm (combination [RAAS inhibitor] vs monotherapy). AKI is used as a stratifying variable. OUTCOME Urinary biomarkers, including albumin, EGF (epidermal growth factor), MCP-1 (monocyte chemoattractant protein-1), YKL-40 (chitinase 3-like protein 1), and KIM-1 (kidney injury molecule-1). ANALYTICAL APPROACH Biomarkers measured at baseline and at 12 months in trial participants were compared between treatment groups and by AKI. AKI events occurring during hospitalization were predefined safety end points in the original trial. The results were included in a meta-analysis with other large chronic kidney disease trials to assess global trends in biomarker changes. RESULTS In 707 participants followed for a median of 2.2 years, AKI incidence was higher in the combination (20.7%) versus the monotherapy group (12.7%; relative risk [RR], 1.64 [95% CI, 1.16-2.30]). Compared with the monotherapy arm, in the combination arm the urine biomarkers at 12 months were either unchanged (MCP-1: RR, -3% [95% CI, -13% to 9%], Padj=0.8; KIM-1: RR, -10% [95% CI, -20% to 1%], Padj=0.2; EGF, RR-7% [95% CI, -12% to-1%], Padj=0.08) or lower (albuminuria: RR, -24% [95% CI, -37% to-8%], Padj=0.02; YKL: RR, -40% to-44% [95% CI, -58% to-25%], Padj<0.001). Pooled meta-analysis demonstrated reduced albuminuria in the intervention arm across 3 trials and similar trajectories in other biomarkers. LIMITATIONS Biomarker measurement was limited to 2 time points independent of AKI events. CONCLUSIONS Despite the increased risk of serum creatinine-defined AKI, combination RAAS inhibitor therapy was associated with unchanged or decreased urinary biomarkers at 12 months. This suggests a possible role for kidney biomarkers to further characterize kidney injury in clinical trials. PLAIN-LANGUAGE SUMMARY The VA NEPHRON-D trial investigated inhibition of the renin-angiotensin-aldosterone system (RAAS) hormonal axis on kidney outcomes in a large population of diabetic chronic kidney disease patients. The trial was stopped early due to increased events of serum creatinine-defined acute kidney injury in the combination therapy arm. Urine biomarkers can serve as an adjunct to serum creatinine in identifying kidney injury. We found that urinary biomarkers in the combination therapy group were not associated with a pattern of harm and damage to the kidney, despite the increased number of kidney injury events in that group. This suggests that serum creatinine alone may be insufficient for defining kidney injury and supports further exploration of how other biomarkers might improve identification of kidney injury in clinical trials.
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Affiliation(s)
- Elizabeth A Kiernan
- Division of Nephrology, Department of Medicine, School of Medicine, Johns Hopkins University, Baltimore, Maryland
| | - David Hu
- Division of Nephrology, Department of Medicine, School of Medicine, Johns Hopkins University, Baltimore, Maryland
| | - Heather Thiessen Philbrook
- Division of Nephrology, Department of Medicine, School of Medicine, Johns Hopkins University, Baltimore, Maryland
| | - Joachim H Ix
- Division of Nephrology-Hypertension, University of California-San Diego, San Diego, California; Veterans Affairs San Diego Healthcare System, San Diego, CA
| | | | - Steven G Coca
- Division of Nephrology, Department of Medicine, Icahn School of Medicine at Mount Sinai, New York, New York
| | - Dennis G Moledina
- Section of Nephrology and Clinical and Translational Research Accelerator, Department of Internal Medicine, School of Medicine, Yale University, New Haven, Connecticut
| | - Linda F Fried
- Renal Section, Veterans Affairs Pittsburgh Healthcare System, Pittsburgh, Pennsylvania
| | - Michael G Shlipak
- Kidney Health Research Collaborative, Department of Medicine, University of California-San Francisco, San Francisco, California
| | - Chirag R Parikh
- Division of Nephrology, Department of Medicine, School of Medicine, Johns Hopkins University, Baltimore, Maryland.
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Sato Y, Inokuchi R, Yamamoto M, Horie R, Asada T, Matsubara T, Doi K. Impact of renal dysfunction on the diagnosis of acute pancreatitis using urinary trypsinogen-2: A retrospective study. Nephrology (Carlton) 2024. [PMID: 38298027 DOI: 10.1111/nep.14276] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2023] [Revised: 01/11/2024] [Accepted: 01/20/2024] [Indexed: 02/02/2024]
Abstract
AIM Early diagnosis of acute pancreatitis is crucial, and urinary trypsinogen has been recently reported as a useful biomarker for diagnosing acute pancreatitis. We aimed to evaluate the impact of renal dysfunction on the diagnostic performance of urinary trypsinogen-2 for acute pancreatitis. METHODS We conducted a retrospective study using the clinical data of patients who visited the Department of Emergency and Critical Care at the University of Tokyo Hospital between 1 October, 2021, and 30 June, 2022. Patients with available data on qualitative urinary trypsinogen-2 levels were identified. We compared the urinary trypsinogen-2 levels among patients who were clinically diagnosed with acute pancreatitis. We further stratified the patients according to renal function parameters, such as serum creatinine level, blood urea nitrogen level, and estimated glomerular filtration rate, and evaluated the performance of urinary trypsinogen-2 as a biomarker for acute pancreatitis. RESULTS Within 9 months, 35 patients were identified. Of them, 22 patients showed positive results and 13 showed negative results on the urinary trypsinogen-2 test. The sensitivity, specificity, positive predictive value, and negative predictive value were 0.80, 0.40, 0.18, and 0.92, respectively. Based on the blood urea nitrogen level and estimated glomerular filtration rate, the prevalence of false-positive results was significantly higher in patients with reduced renal function than in those with normal renal function. CONCLUSION In patients with reduced renal function, the urinary trypsinogen-2 qualitative test results might be interpreted with caution when used for diagnosing acute pancreatitis.
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Affiliation(s)
- Yuko Sato
- Department of Emergency and Critical Care Medicine, The University of Tokyo Hospital, Tokyo, Japan
| | - Ryota Inokuchi
- Department of Emergency and Critical Care Medicine, The University of Tokyo Hospital, Tokyo, Japan
| | - Miyuki Yamamoto
- Department of Emergency and Critical Care Medicine, The University of Tokyo Hospital, Tokyo, Japan
| | - Ryohei Horie
- Department of Emergency and Critical Care Medicine, The University of Tokyo Hospital, Tokyo, Japan
| | - Toshifumi Asada
- Department of Emergency and Critical Care Medicine, The University of Tokyo Hospital, Tokyo, Japan
| | - Takehiro Matsubara
- Department of Emergency and Critical Care Medicine, The University of Tokyo Hospital, Tokyo, Japan
| | - Kent Doi
- Department of Emergency and Critical Care Medicine, The University of Tokyo Hospital, Tokyo, Japan
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Siu VS, Lu M, Hsieh KY, Wen B, Buleje I, Hinds N, Patel K, Dang B, Budd R. Development of a Quantitative Digital Urinalysis Tool for Detection of Nitrite, Protein, Creatinine, and pH. Biosensors (Basel) 2024; 14:70. [PMID: 38391989 PMCID: PMC10887154 DOI: 10.3390/bios14020070] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/05/2024] [Revised: 01/23/2024] [Accepted: 01/26/2024] [Indexed: 02/24/2024]
Abstract
This paper presents a cost-effective, quantitative, point-of-care solution for urinalysis screening, specifically targeting nitrite, protein, creatinine, and pH in urine samples. Detecting nitrite is crucial for the early identification of urinary tract infections (UTIs), while regularly measuring urinary protein-to-creatinine (UPC) ratios aids in managing kidney health. To address these needs, we developed a portable, transmission-based colorimeter using readily available components, controllable via a smartphone application through Bluetooth. Multiple colorimetric detection strategies for each analyte were identified and tested for sensitivity, specificity, and stability in a salt buffer, artificial urine, and human urine. The colorimeter successfully detected all analytes within their clinically relevant ranges: nitrite (6.25-200 µM), protein (2-1024 mg/dL), creatinine (2-1024 mg/dL), and pH (5.0-8.0). The introduction of quantitative protein and creatinine detection, and a calculated urinary protein-to-creatinine (UPC) ratio at the point-of-care, represents a significant advancement, allowing patients with proteinuria to monitor their condition without frequent lab visits. Furthermore, the colorimeter provides versatile data storage options, facilitating local storage on mobile devices or in the cloud. The paper further details the setup of the colorimeter's secure connection to a cloud-based environment, and the visualization of time-series analyte measurements in a web-based dashboard.
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Affiliation(s)
- Vince S. Siu
- IBM T.J. Watson Research Center, Yorktown Heights, NY 10598, USA; (M.L.); (K.Y.H.); (B.W.); (I.B.); (N.H.); (K.P.); (B.D.); (R.B.)
| | - Minhua Lu
- IBM T.J. Watson Research Center, Yorktown Heights, NY 10598, USA; (M.L.); (K.Y.H.); (B.W.); (I.B.); (N.H.); (K.P.); (B.D.); (R.B.)
| | - Kuan Yu Hsieh
- IBM T.J. Watson Research Center, Yorktown Heights, NY 10598, USA; (M.L.); (K.Y.H.); (B.W.); (I.B.); (N.H.); (K.P.); (B.D.); (R.B.)
- Institute of Biomedical Engineering, College of Electrical and Computer Engineering, National Yang Ming Chiao Tung University, Hsinchu 30010, Taiwan
- Department of Electrical and Computer Engineering, College of Electrical and Computer Engineering, National Yang Ming Chiao Tung University, Hsinchu 30010, Taiwan
| | - Bo Wen
- IBM T.J. Watson Research Center, Yorktown Heights, NY 10598, USA; (M.L.); (K.Y.H.); (B.W.); (I.B.); (N.H.); (K.P.); (B.D.); (R.B.)
| | - Italo Buleje
- IBM T.J. Watson Research Center, Yorktown Heights, NY 10598, USA; (M.L.); (K.Y.H.); (B.W.); (I.B.); (N.H.); (K.P.); (B.D.); (R.B.)
| | - Nigel Hinds
- IBM T.J. Watson Research Center, Yorktown Heights, NY 10598, USA; (M.L.); (K.Y.H.); (B.W.); (I.B.); (N.H.); (K.P.); (B.D.); (R.B.)
| | - Krishna Patel
- IBM T.J. Watson Research Center, Yorktown Heights, NY 10598, USA; (M.L.); (K.Y.H.); (B.W.); (I.B.); (N.H.); (K.P.); (B.D.); (R.B.)
| | - Bing Dang
- IBM T.J. Watson Research Center, Yorktown Heights, NY 10598, USA; (M.L.); (K.Y.H.); (B.W.); (I.B.); (N.H.); (K.P.); (B.D.); (R.B.)
| | - Russell Budd
- IBM T.J. Watson Research Center, Yorktown Heights, NY 10598, USA; (M.L.); (K.Y.H.); (B.W.); (I.B.); (N.H.); (K.P.); (B.D.); (R.B.)
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13
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Cavalier E, Makris K, Portakal O, Nikler A, Datta P, Zima T, Delanaye P. Assessing the status of European laboratories in evaluating biomarkers for chronic kidney diseases (CKD) and recommendations for improvement: insights from the 2022 EFLM Task Group on CKD survey. Clin Chem Lab Med 2024; 62:253-261. [PMID: 37773773 DOI: 10.1515/cclm-2023-0987] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2023] [Accepted: 09/12/2023] [Indexed: 10/01/2023]
Abstract
OBJECTIVES Chronic kidney disease (CKD) is a global health issue, ranking as the third leading cause of death worldwide. CKD diagnosis and management depend on clinical laboratory tests, necessitating consistency for precise patient care. Global harmonization of CKD testing through clinical practice guidelines (CPGs) is recommended. Prior to CPG development, assessing the current CKD testing landscape is crucial. In 2022, the European Federation of Laboratory Medicine (EFLM) conducted an online survey among European laboratories associated with EFLM, evaluating CKD testing practices, including new glomerular filtration rate (GFR) estimation methods. This report summarizes the 2022 survey findings and offers recommendations for improving CKD test standardization. METHODS An online survey was conducted in November 2022 using a questionnaire hosted on LimeSurvey sent to European laboratories affiliated with the EFLM. The survey results were recorded in Excel files and analysed. RESULTS The results highlight significant discrepancies among countries in unit expression, methods, cystatin C use, and GFR calculation equations. Additionally, limited attention to pediatric renal biology specifics, varied proteinuria and albuminuria result expressions, and limited awareness of GFR measurement methods through iohexol clearance are noted. CONCLUSIONS In an effort to enhance the standardization of crucial biomarkers utilized in nephrology for evaluating renal function and diagnosing kidney injuries, the EFLM Task Group on CKD suggests nine practical recommendations tailored for European laboratories. The group is confident that implementing these measures will minimize result expression discrepancies, ultimately leading to enhanced patient care.
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Affiliation(s)
- Etienne Cavalier
- Department of Clinical Chemistry, University of Liege, CIRM, CHU de Liège, Liège, Belgium
| | | | - Oytun Portakal
- Department of Biochemistry, Hacettepe University Medical School, Ankara, Türkiye
| | - Ana Nikler
- Department of Medical Laboratory Diagnostics, University Hospital "Sveti Duh", Zagreb, Croatia
| | - Pradip Datta
- Siemens Healthineers Diagnostics, Newark, DE, USA
| | - Tomas Zima
- Institute of Medical Chemistry and Laboratory Medicine, 1st Faculty of Medicine, Charles University and General University Hospital, Prague, Czech Republic
| | - Pierre Delanaye
- Department of Nephrology, Dialysis and Hypertension, CHU de Liège, Liège, Belgium
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Donato G, Caspanello T, De Majo M, Masucci M, Iannelli D, Santoro S, Caprì A, Iannelli NM, Pennisi MG. Pilot Study on QTc Interval in Dogs Treated with Domperidone. Vet Sci 2024; 11:39. [PMID: 38250945 PMCID: PMC10819563 DOI: 10.3390/vetsci11010039] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2023] [Revised: 01/12/2024] [Accepted: 01/16/2024] [Indexed: 01/23/2024] Open
Abstract
Domperidone is used as an immunomodulatory drug for Leishmania infantum infection and disease in dogs. However, a pro-arrhythmic side effect, caused by prolonged QT intervals, is reported in humans. This pilot study evaluated the corrected QT (QTc) interval in dogs treated with domperidone for preventive or therapeutic management of leishmaniosis. The electrocardiogram and blood concentration of creatinine, urea nitrogen, sodium, potassium, and chloride were evaluated seven days before the start and on the last day of therapy in 17 dogs receiving domperidone for four weeks. In two dogs, the QTc interval was measured before and 2 h, 3 h, and 12 h after administration of the drug on the first day of treatment. After treatment, QTc measures and chloride concentrations increased significantly, although the QTc value slightly exceeded the upper reference limit only in one dog, and chloride concentrations were always normal. Creatinine concentrations significantly decreased after therapy. In the two dogs monitored at different times on the first day of treatment, QTc values were always normal. Domperidone caused a slight prolongation of QTc interval, and further studies should be made for a risk assessment in dogs with cardiac diseases, electrolytic imbalance, and in those receiving drugs increasing QT interval or competing with domperidone metabolism.
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Affiliation(s)
- Giulia Donato
- Department of Veterinary Science, University of Messina, 98168 Messina, Italy; (G.D.); (T.C.); (M.D.M.); (N.M.I.); (M.G.P.)
| | - Tiziana Caspanello
- Department of Veterinary Science, University of Messina, 98168 Messina, Italy; (G.D.); (T.C.); (M.D.M.); (N.M.I.); (M.G.P.)
| | - Massimo De Majo
- Department of Veterinary Science, University of Messina, 98168 Messina, Italy; (G.D.); (T.C.); (M.D.M.); (N.M.I.); (M.G.P.)
| | - Marisa Masucci
- Department of Veterinary Science, University of Messina, 98168 Messina, Italy; (G.D.); (T.C.); (M.D.M.); (N.M.I.); (M.G.P.)
| | - Diego Iannelli
- Clinica Veterinaria Camagna–VetPartners, 89124 Reggio di Calabria, Italy; (D.I.); (S.S.); (A.C.)
| | - Silvia Santoro
- Clinica Veterinaria Camagna–VetPartners, 89124 Reggio di Calabria, Italy; (D.I.); (S.S.); (A.C.)
| | - Alessandra Caprì
- Clinica Veterinaria Camagna–VetPartners, 89124 Reggio di Calabria, Italy; (D.I.); (S.S.); (A.C.)
| | - Nicola Maria Iannelli
- Department of Veterinary Science, University of Messina, 98168 Messina, Italy; (G.D.); (T.C.); (M.D.M.); (N.M.I.); (M.G.P.)
- Clinica Veterinaria Camagna–VetPartners, 89124 Reggio di Calabria, Italy; (D.I.); (S.S.); (A.C.)
| | - Maria Grazia Pennisi
- Department of Veterinary Science, University of Messina, 98168 Messina, Italy; (G.D.); (T.C.); (M.D.M.); (N.M.I.); (M.G.P.)
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Ma Y, Yong Z, Wei L, Yuan H, Wan L, Pei X, Zhang F, Wen G, Jin C, Gu Y, Zhang Q, Zhao W, Zhu B. Data mining of reference intervals for serum creatinine: an improvement in glomerular filtration rate estimating equations based on Q-values. Clin Chem Lab Med 2024; 0:cclm-2023-1421. [PMID: 38205974 DOI: 10.1515/cclm-2023-1421] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2023] [Accepted: 01/02/2024] [Indexed: 01/12/2024]
Abstract
OBJECTIVES Glomerular filtration rate (GFR) estimating equations based on rescaled serum creatinine (SCr/Q) have shown better performance, where Q represents the median SCr for age- and sex-specific healthy populations. However, there remains a scarcity of investigations in China to determine this value. We aimed to develop Chinese age- and sex-specific reference intervals (RIs) and Q-values for SCr and to validate the equations incorporating new Q-values. METHODS We included 117,345 adults from five centers for establishing RIs and Q-values, and 3,692 participants with reference GFR (rGFR, 99mTc-DTPA renal dynamic imaging measurement) for validation. Appropriate age partitioning was determined using the decision tree method. Lower and upper reference limits and medians were calculated using the refineR algorithm, and Q-values were determined accordingly. We evaluated the full age spectrum (FAS) and European Kidney Function Consortium (EKFC) equations incorporating different Q-values considering bias, precision (interquartile range, IQR), and accuracy (percentage of estimates within ±20 % [P20] and ±30 % [P30] of rGFR). RESULTS RIs for males were: 18-79 years, 55.53-92.50 μmol/L; ≥80 years, 54.41-96.43 μmol/L. RIs for females were: 18-59 years, 40.42-69.73 μmol/L; 60-79 years, 41.16-73.69 μmol/L; ≥80 years, 46.50-73.20 μmol/L. Q-values were set at 73.82 μmol/L (0.84 mg/dL) for males and 53.80 μmol/L (0.61 mg/dL) for females. After validation, we found that the adjusted equations exhibit less bias, improved precision and accuracy, and increased agreement of GFR categories. CONCLUSIONS We determined Chinese age- and sex-specific RIs and Q-values for SCr. The adjustable Q-values provide an effective alternative to obtain valid equations for estimating GFR.
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Affiliation(s)
- Yao Ma
- Division of Nephrology, Department of Geriatrics, Jiangsu Province Hospital and Nanjing Medical University First Affiliated Hospital, Nanjing, P.R. China
| | - Zhenzhu Yong
- Division of Nephrology, Department of Geriatrics, Jiangsu Province Hospital and Nanjing Medical University First Affiliated Hospital, Nanjing, P.R. China
| | - Lu Wei
- Division of Nephrology, Department of Geriatrics, Jiangsu Province Hospital and Nanjing Medical University First Affiliated Hospital, Nanjing, P.R. China
| | - Haichuan Yuan
- Division of Nephrology, Department of Geriatrics, Jiangsu Province Hospital and Nanjing Medical University First Affiliated Hospital, Nanjing, P.R. China
| | - Lihong Wan
- Division of Nephrology, Department of Geriatrics, Jiangsu Province Hospital and Nanjing Medical University First Affiliated Hospital, Nanjing, P.R. China
| | - Xiaohua Pei
- Division of Nephrology, Department of Geriatrics, Jiangsu Province Hospital and Nanjing Medical University First Affiliated Hospital, Nanjing, P.R. China
| | - Feng Zhang
- Department of Nephrology, Sheyang People's Hospital, Yancheng, China
| | - Guohua Wen
- The First People's Hospital of Yancheng, Yancheng, P.R. China
| | - Cheng Jin
- Department of Geriatrics, The Affiliated People's Hospital of Jiangsu University, Zhenjiang, P.R. China
| | - Yan Gu
- Department of Geriatrics, The First People's Hospital of Nantong, Nantong, P.R. China
| | - Qun Zhang
- Health Management Center, Jiangsu Province Hospital and Nanjing Medical University First Affiliated Hospital, Nanjing, P.R. China
| | - Weihong Zhao
- Division of Nephrology, Department of Geriatrics, Jiangsu Province Hospital and Nanjing Medical University First Affiliated Hospital, Nanjing, P.R. China
| | - Bei Zhu
- Division of Nephrology, Department of Geriatrics, Jiangsu Province Hospital and Nanjing Medical University First Affiliated Hospital, Nanjing, P.R. China
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Liu J, Wang C, Wang Y, Yao S. Association of Uric Acid to Creatinine Ratio with Metabolic Dysfunction-Associated Fatty Liver in Non-Obese Individuals Without Type 2 Diabetes Mellitus. Diabetes Metab Syndr Obes 2024; 17:131-142. [PMID: 38222031 PMCID: PMC10786728 DOI: 10.2147/dmso.s445916] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/21/2023] [Accepted: 12/28/2023] [Indexed: 01/16/2024] Open
Abstract
Introduction Metabolic dysfunction-associated fatty liver disease (MAFLD) is the most common chronic liver disease, which is usually associated with type 2 diabetes mellitus (T2DM) and obesity. However, the incidence of MALFD in non-obese individuals without T2DM is increasing, and the pathogenesis is unclear. Serum uric acid to creatinine ratio (sUA/Cr) can reflect overall metabolic status. This study aims to observe the association between sUA/Cr and MAFLD in non-obese individuals without T2DM. Methods A total of 21,996 individuals were included in this study. The subjects were divided into four subgroups: non-obese patients without T2DM, obese patients without T2DM, non-obese patients with T2DM, and obese patients with T2DM. Logistic regression analyzed the correlation between sUA/Cr and MAFLD subgroups. Receiver operating characteristics analyzed the predictive value of sUA/Cr for MAFLD subgroups. The stratified analyses by sex and age were performed. Results Non-obese MAFLD individuals without T2DM had higher sUA/Cr levels than their counterparts. sUA/Cr was significantly correlated positively with MAFLD in non-obese patients. Similar results were observed in both males and females and in populations at all age stages (all p<0.01). sUA/Cr was capable of discriminating MAFLD in non-obese individuals without T2DM (AUC: 0.667), especially for patients over 60 years old (AUC: 0.704). Conclusion The sUA/Cr ratio was correlated with MAFLD in non-obese patients without T2DM. The predictive value of sUA/Cr for MAFLD was observed. Hence, the sUA/Cr ratio might be given more concern for the risk of MAFLD in non-obese individuals without T2DM.
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Affiliation(s)
- Jing Liu
- China-Japan Friendship Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, People’s Republic of China
| | - Che Wang
- School of Qi Huang, Beijing University of Chinese Medicine, Beijing, People’s Republic of China
| | - Yutong Wang
- School of Qi Huang, Beijing University of Chinese Medicine, Beijing, People’s Republic of China
| | - Shukun Yao
- Department of Gastroenterology, China-Japan Friendship Hospital, Beijing, People’s Republic of China
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Demlova R, Kozakova S, Rihacek M, Buckova D, Horska K, Wiewiorka O, Boucek L, Selingerova I, Podborska M, Korberova A, Mikuskova A, Starha J, Benovska M, Radina M, Richter M, Zdrazilova Dubska L, Valik D. Emergency medicine pharmacotherapy compromises accuracy of plasma creatinine determination by enzyme-based methods: real-world clinical evidence and implications for clinical practice. Front Med (Lausanne) 2024; 10:1236948. [PMID: 38259831 PMCID: PMC10801230 DOI: 10.3389/fmed.2023.1236948] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2023] [Accepted: 11/20/2023] [Indexed: 01/24/2024] Open
Abstract
Background Assessment of kidney function in emergency settings is essential across all medical subspecialties. Daily assessment of patient creatinine results from emergency medical services showed that some deviated from expected values, implying drug-related interference. Methods Real-time clinical evaluation of an enzyme method (Roche CREP2) in comparison with the Jaffé gen. 2 method (Roche CREJ2) was performed. During the period of December 2022 and January 2023, we analyzed 8,498 patient samples, where 5,524 were heavily medicated STAT patient specimens, 500 were pediatric specimens, and 2,474 were from a distant general population in a different region using the same methods. Results In 109 out of 5,524 hospital specimens (1.97%, p < 0.001), the CREP2 value was apparently (25% or more) lower than CREJ2. Suspect interfering medication was found in a sample of 43 out of 46 reviewed patients where medication data were available. This phenomenon was not observed in the general population. Conclusion In a polymedicated urgent care hospital population, a creatinine enzyme method produces unreliable results, apparently due to multiple drug-related interferences.
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Affiliation(s)
- Regina Demlova
- Department of Pharmacology, Faculty of Medicine, Masaryk University, Brno, Czechia
| | - Sarka Kozakova
- Department of Pharmacology, Faculty of Medicine, Masaryk University, Brno, Czechia
- Department of Pharmacy, University Hospital Brno, Brno, Czechia
| | - Michal Rihacek
- Diagnostic and Therapeutic Centre, Emergency Services Department, University Hospital Brno, Masaryk University, Brno, Czechia
- Department of Laboratory Medicine, University Hospital Brno, Masaryk University, Brno, Czechia
- Department of Laboratory Methods, Faculty of Medicine, Masaryk University, Brno, Czechia
| | - Dana Buckova
- Department of Laboratory Medicine, University Hospital Brno, Masaryk University, Brno, Czechia
- Department of Laboratory Methods, Faculty of Medicine, Masaryk University, Brno, Czechia
| | - Katerina Horska
- Department of Pharmacy, Clinical Pharmacy Services Unit, University Hospital Brno, Brno, Czechia
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Masaryk University, Brno, Czechia
| | - Ondrej Wiewiorka
- Department of Laboratory Methods, Faculty of Medicine, Masaryk University, Brno, Czechia
- Department of Laboratory Medicine, University Hospital Brno, Brno, Czechia
| | - Lubos Boucek
- Department of Laboratory Medicine, University Hospital Brno, Brno, Czechia
| | - Iveta Selingerova
- Department of Pharmacology, Faculty of Medicine, Masaryk University, Brno, Czechia
- Department of Mathematics and Statistics, Faculty of Science, Masaryk University, Brno, Czechia
| | - Martina Podborska
- Department of Laboratory Methods, Faculty of Medicine, Masaryk University, Brno, Czechia
- Department of Laboratory Medicine, University Hospital Brno, Brno, Czechia
| | - Alena Korberova
- Department of Laboratory Methods, Faculty of Medicine, Masaryk University, Brno, Czechia
- Department of Laboratory Medicine, University Hospital Brno, Brno, Czechia
| | - Alena Mikuskova
- Department of Laboratory Methods, Faculty of Medicine, Masaryk University, Brno, Czechia
- Department of Pediatric Hematology and Biochemistry, University Hospital Brno, Brno, Czechia
| | - Jiri Starha
- Department of Pediatrics, Pediatric Nephrology Unit, University Hospital Brno, Brno, Czechia
- Faculty of Medicine, Masaryk University, Brno, Czechia
| | - Miroslava Benovska
- Department of Laboratory Methods, Faculty of Medicine, Masaryk University, Brno, Czechia
- Department of Laboratory Medicine, University Hospital Brno, Brno, Czechia
| | - Martin Radina
- Research Unit for Rare Diseases, Department of Pediatrics and Inherited Metabolic Disorders, First Faculty of Medicine, Charles University, Prague, Czechia
- General Teaching Hospital, Prague, Czechia
- Spadia Laboratories, Central Reference Lab, Division of Clinical Biochemistry, Ostrava, Czechia
| | - Michal Richter
- Spadia Laboratories, Central Reference Lab, Division of Clinical Biochemistry, Ostrava, Czechia
| | - Lenka Zdrazilova Dubska
- Department of Pharmacology, Faculty of Medicine, Masaryk University, Brno, Czechia
- Department of Laboratory Methods, Faculty of Medicine, Masaryk University, Brno, Czechia
- Department of Laboratory Medicine, University Hospital Brno, Brno, Czechia
| | - Dalibor Valik
- Department of Pharmacology, Faculty of Medicine, Masaryk University, Brno, Czechia
- Department of Laboratory Methods, Faculty of Medicine, Masaryk University, Brno, Czechia
- Department of Laboratory Medicine, University Hospital Brno, Brno, Czechia
- Department of Pediatric Oncology, University Hospital Brno, Brno, Czechia
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18
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Chen P, Jiang Y, Cai J, Fan HY, Liang J, Yuan R, Wu H, Wang Y, Cheng S, Zhang Y. Prediction of prognosis in patients with nontraumatic intracranial hemorrhage using blood urea nitrogen-to- creatinine ratio on admission: a retrospective cohort study based on data from the medical information Mart for intensive care-IV database. Front Neurol 2024; 14:1267815. [PMID: 38249742 PMCID: PMC10797125 DOI: 10.3389/fneur.2023.1267815] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2023] [Accepted: 12/05/2023] [Indexed: 01/23/2024] Open
Abstract
Background The blood urea nitrogen-to-creatinine ratio (BUNCR) has been proposed as a potential biomarker for critical illness-induced catabolism. However, its specific relevance and significance in the context of non-traumatic intracranial hemorrhage (NTIH) remains unclear. As such, the primary objective of this study was to determine the role of BUNCR in the prognosis of patients with NTIH. Materials and methods All data were sourced from the Medical Information Mart for Intensive Care-IV 2.0 (MIMIC-IV) database. Study outcomes included 30-day and 1-year mortality rates. Univariate and multivariate logistic regression analyses were used to calculate adjusted odds ratio with corresponding 95% confidence interval, and generalized additive model were used to identify both linear and non-linear relationships between BUNCR and mortality rates. A two-piecewise regression model was performed to calculate the saturation effect. Subgroup analyses were performed to evaluate outcome stability in various groups. Results A retrospective study of 3,069 patients with NTIH revealed a U-shaped relationship between BUNCR levels and 30-day/1-year mortality. The two-piecewise regression model showed that the inflection points for 30-day and 1-year mortality were 10.455 and 16.25, respectively. On the left side of the inflection point, the 30-day and 1-year mortality rate decreased by 17.7% (OR = 0.823, 95%CI: 0.705-0.960; p = 0.013) and 5.3% (OR = 0.947, 95%CI: 0.899-0.999; p = 0.046), respectively, per 1 unit increment of BUNCR. On the right side of the inflection point, the 30-day and 1-year mortality rate increased by 1.6% (OR = 1.016, 95%CI: 1.000-1.031; p = 0.046) and 3.6% (OR = 1.036, 95%CI:1.019-1.054; p < 0.001) per 1 unit decrement of BUNCR. Subgroup analyses revealed consistent results across different strata. Conclusion This study identified a nonlinear relationship between BUNCR and mortality in patients with NTIH, indicating that BUNCR may be valuable prognostic marker for early identification and proactive management.
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Affiliation(s)
- Peng Chen
- Department of Neurosurgery, The Second Affiliated Hospital, Jiangxi Medical College, Nanchang University, Nanchang, Jiangxi, China
| | - YongAn Jiang
- Department of Neurosurgery, The Second Affiliated Hospital, Jiangxi Medical College, Nanchang University, Nanchang, Jiangxi, China
| | - JiaHong Cai
- Department of Neurosurgery, The Second Affiliated Hospital, Jiangxi Medical College, Nanchang University, Nanchang, Jiangxi, China
| | - Heng Yi Fan
- Department of Neurosurgery, The Second Affiliated Hospital, Jiangxi Medical College, Nanchang University, Nanchang, Jiangxi, China
| | - JiaWei Liang
- Department of Neurosurgery, The Second Affiliated Hospital, Jiangxi Medical College, Nanchang University, Nanchang, Jiangxi, China
| | - RaoRao Yuan
- Department of Neurosurgery, The Second Affiliated Hospital, Jiangxi Medical College, Nanchang University, Nanchang, Jiangxi, China
| | - Hao Wu
- Department of Neurosurgery, Shanxi Bethune Hospital, Shanxi Academy of Medical Sciences, Tongji Shanxi Hospital, Third Hospital of Shanxi Medical University, Taiyuan, Shanxi, China
| | - YongHong Wang
- Department of Neurosurgery, Shanxi Bethune Hospital, Shanxi Academy of Medical Sciences, Tongji Shanxi Hospital, Third Hospital of Shanxi Medical University, Taiyuan, Shanxi, China
| | - ShiQi Cheng
- Department of Neurosurgery, The Second Affiliated Hospital, Jiangxi Medical College, Nanchang University, Nanchang, Jiangxi, China
| | - Yan Zhang
- Department of Neurosurgery, The Second Affiliated Hospital, Jiangxi Medical College, Nanchang University, Nanchang, Jiangxi, China
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Schurr JW, Genuardi MV. Direct VO 2 Measurement: Getting the Fick Right for Heart Transplant Eligibility. Circ Heart Fail 2024; 17:e011214. [PMID: 38073555 DOI: 10.1161/circheartfailure.123.011214] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/18/2024]
Affiliation(s)
- James W Schurr
- Division of Cardiology, Department of Medicine, Hospital of the University of Pennsylvania, Perelman School of Medicine, Philadelphia
| | - Michael V Genuardi
- Division of Cardiology, Department of Medicine, Hospital of the University of Pennsylvania, Perelman School of Medicine, Philadelphia
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20
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Neutens P, Zinoviev K, Jimenez Valencia AM, Woronoff G, Jansen R, Hosseini N, Uribe AJ, Goheen J, Kryszak LA, Stakenborg T, Clarke WA, Van Roy W. Toward point-of-care diagnostics: Running enzymatic assays on a photonic waveguide-based sensor chip with a portable, benchtop measurement system. J Biophotonics 2024; 17:e202300279. [PMID: 37703421 DOI: 10.1002/jbio.202300279] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/18/2023] [Revised: 09/11/2023] [Accepted: 09/12/2023] [Indexed: 09/15/2023]
Abstract
We demonstrate a portable, compact system to perform absorption-based enzymatic assays at a visible wavelength of 639 nm on a photonic waveguide-based sensor chip, suitable for lab-on-a-chip applications. The photonic design and fabrication of the sensor are described, and a detailed overview of the portable measurement system is presented. In this publication, we use an integrated photonic waveguide-based absorbance sensor to run a full enzymatic assay. An assay to detect creatinine in plasma is simultaneously performed on both the photonic sensor on the portable setup and on a commercial microplate reader for a clinically relevant creatinine concentration range. We observed a high correlation between the measured waveguide propagation loss and the optical density measurement from the plate reader and measured a limit-of-detection of 4.5 μM creatinine in the sensor well, covering the relevant clinical range for creatinine detection.
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Affiliation(s)
- Pieter Neutens
- Life Science Technologies Department, Imec, Leuven, Belgium
| | | | - Angela M Jimenez Valencia
- Laboratory for Integrated Nanodiagnostics, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
- Department of Pathology, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | | | - Roelof Jansen
- Life Science Technologies Department, Imec, Leuven, Belgium
| | - Naser Hosseini
- Life Science Technologies Department, Imec, Leuven, Belgium
| | | | - Joshua Goheen
- Laboratory for Integrated Nanodiagnostics, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
- Department of Pathology, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Lindsay A Kryszak
- Laboratory for Integrated Nanodiagnostics, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
- Department of Pathology, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Tim Stakenborg
- Life Science Technologies Department, Imec, Leuven, Belgium
| | - William A Clarke
- Laboratory for Integrated Nanodiagnostics, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
- Department of Pathology, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Willem Van Roy
- Life Science Technologies Department, Imec, Leuven, Belgium
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21
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Prowle JR, Croal B, Abbott TEF, Cuthbertson BH, Wijeysundera DN. Cystatin C or creatinine for pre-operative assessment of kidney function and risk of post-operative acute kidney injury: a secondary analysis of the METS cohort study. Clin Kidney J 2024; 17:sfae004. [PMID: 38269033 PMCID: PMC10807905 DOI: 10.1093/ckj/sfae004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2023] [Indexed: 01/26/2024] Open
Abstract
Background Post-operative acute kidney injury (PO-AKI) is a common surgical complication consistently associated with subsequent morbidity and mortality. Prior kidney dysfunction is a major risk factor for PO-AKI, however it is unclear whether serum creatinine, the conventional kidney function marker, is optimal in this population. Serum cystatin C is a kidney function marker less affected by body composition and might provide better prognostic information in surgical patients. Methods This was a pre-defined, secondary analysis of a multi-centre prospective cohort study of pre-operative functional capacity. Participants were aged ≥40 years, undergoing non-cardiac surgery. We assessed the association of pre-operative estimated glomerular filtration rate (eGFR) calculated using both serum creatinine and serum cystatin C with PO-AKI within 3 days after surgery, defined by KDIGO creatinine changes. The adjusted analysis accounted for established AKI risk factors. Results A total of 1347 participants were included (median age 65 years, interquartile range 56-71), of whom 775 (58%) were male. A total of 82/1347 (6%) patients developed PO-AKI. These patients were older, had higher prevalence of cardiovascular disease and related medication, were more likely to have intra-abdominal procedures, had more intraoperative transfusion, and were more likely to be dead at 1 year after surgery 6/82 (7.3%) vs 33/1265 (2.7%) (P = .038). Pre-operative eGFR was lower in AKI than non-AKI patients using both creatinine and cystatin C. When both measurements were considered in a single age- and sex-adjusted model, eGFR-Cysc was strongly associated with PO-AKI, with increasing risk of AKI as eGFR-Cysc decreased below 90, while eGFR-Cr was no longer significantly associated. Conclusions Data from over 1000 prospectively recruited surgical patients confirms pre-operative kidney function as major risk factor for PO-AKI. Of the kidney function markers available, compared with creatinine, cystatin C had greater strength of association with PO-AKI and merits further assessment in pre-operative assessment of surgical risk.
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Affiliation(s)
- John R Prowle
- Critical Care and Peri-operative Medicine Research Group, William Harvey Research Institute, Faculty of Medicine, Queen Mary University of London, London, UK
- Adult Critical Care Unit, Barts Health NHS Trust, London, UK
| | - Bernard Croal
- NHS Grampian-Clinical Biochemistry, Aberdeen Royal Infirmary, Foresterhill, Aberdeen, UK
| | - Thomas E F Abbott
- Critical Care and Peri-operative Medicine Research Group, William Harvey Research Institute, Faculty of Medicine, Queen Mary University of London, London, UK
- Adult Critical Care Unit, Barts Health NHS Trust, London, UK
| | - Brian H Cuthbertson
- Department of Anesthesiology and Pain Medicine, University of Toronto, Toronto, ON, Canada
- Interdepartmental Division of Critical Care Medicine, University of Toronto, Toronto, ON,Canada
- Department of Critical Care Medicine, Sunnybrook Health Sciences Centre, Toronto, ON, Canada
| | - Duminda N Wijeysundera
- Department of Anesthesiology and Pain Medicine, University of Toronto, Toronto, ON, Canada
- Department of Anesthesia, St Michael's Hospital, Toronto, ON, Canada
- Institute of Health Policy, Management and Evaluation, Dalla Lana School of Public Health, University of Toronto, Toronto, ON, Canada
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22
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Gama R, Javeria Peracha, Kate Bramham, Cockwell P. Removal of ethnicity adjustment for creatinine-based estimated glomerular filtration rate equations. Ann Clin Biochem 2024; 61:8-18. [PMID: 36550595 DOI: 10.1177/00045632221149660] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Creatinine-based estimated glomerular filtration rate equations (eGFRcreatinine) are used to measure excretory kidney function in clinical practice. Despite inter and intra-patient variability, eGFRcreatinine has excellent clinical utility and provides the basis for the classification system for chronic kidney disease (CKD), for kidney function monitoring, treatment interventions and referral pathways. The 4-variable modification of diet in renal disease (MDRD) eGFRcreatinine equation was introduced in 2000 and recommended by the National Institute for Health and Care Excellence (NICE) in 2008. Subsequently, the Chronic Kidney Disease Epidemiology Collaboration (CKD-EPI) eGFRcreatinine equation was introduced in 2009 and is more accurate than MDRD in patients with mild and moderate CKD. In 2014, NICE recommended that CKD-EPI eGFRcreatinine replace MDRD eGFRcreatinine in routine clinical practice across England. Both equations originally incorporated adjustments for age, gender and ethnicity. However, the evidence for ethnicity adjustment has been increasingly questioned, and in 2021 NICE recommended that kidney function should be estimated by CKD-EPI eGFRcreatinine without using ethnicity adjustment. Recently, a CKD-EPI equation has been presented without ethnicity adjustment; however, this has not been validated outside of North America and NICE continues to recommend CKD-EPI 2009. We review the status of eGFRcreatinine in clinical practice, including the limitations of eGFRcreatinine and the rationale for removal of ethnicity adjustment and the potential impact of this change on clinical care for patients with kidney disease.
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Affiliation(s)
- Rouvick Gama
- King's Kidney Care, King's College Hospital NHS Foundation Trust, London, UK
| | - Javeria Peracha
- Renal Unit, The Royal Wolverhampton NHS Trust, Wolverhampton, UK
| | - Kate Bramham
- King's Kidney Care, King's College Hospital NHS Foundation Trust, London, UK
- Department of Renal Sciences, King's College London, London, UK
| | - Paul Cockwell
- Department of Nephrology, Queen Elizabeth Hospital, University Hospitals Birmingham NHS Foundation Trust and Institute of Inflammation and Ageing, University of Birmingham, Birmingham, UK
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23
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Auguste BL, Nadeau-Fredette AC, Parekh RS, Poyah PS, Perl J, Sood MM, Tangri N. A Canadian Commentary on the NKF-ASN Task Force Recommendations on Reassessing the Inclusion of Race in Diagnosing Kidney Disease. Kidney Med 2024; 6:100746. [PMID: 38143561 PMCID: PMC10746381 DOI: 10.1016/j.xkme.2023.100746] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2023] Open
Abstract
In 2021, a committee was commissioned by the Canadian Society of Nephrology to comment on the 2021 National Kidney Foundation-American Society of Nephrology Task Force recommendations on the use of race in glomerular filtration rate estimating equations. The committee met on numerous occasions and agreed on several recommendations. However, the committee did not achieve unanimity, with a minority group disagreeing with the scope of the commentary. As a result, this report presents the viewpoint of the majority members. We endorsed many of the recommendations from the National Kidney Foundation-American Society of Nephrology Task Force, most importantly that race should be removed from the estimated glomerular filtration rate creatinine-based equation. We recommend an immediate implementation of the new Chronic Kidney Disease Epidemiology Collaboration equation (2021), which does not discriminate among any group while maintaining precision. Additionally, we recommend that Canadian laboratories and provincial kidney organizations advocate for increased testing and access to cystatin C because the combination of cystatin C and creatinine in revised equations leads to more precise estimates. Finally, we recommend that future research studies evaluating the implementation of the new equations and changes to screening, diagnosis, and management across provincial health programs be prioritized in Canada.
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Affiliation(s)
- Bourne L. Auguste
- Department of Medicine, University of Toronto, Toronto, ON, Canada
- Division of Nephrology, Sunnybrook Health Sciences Centre, Toronto, ON, Canada
| | - Annie Claire Nadeau-Fredette
- Hôpital Maisonneuve-Rosemont Research Center, Department of Medicine, Université de Montréal, Montréal, QC, Canada
| | - Rulan S. Parekh
- Department of Medicine, University of Toronto, Toronto, ON, Canada
- Women’s College Hospital, Toronto, ON, Canada
- Department of Pediatrics, Hospital for Sick Children, Toronto, ON, Canada
| | - Penelope S. Poyah
- Nova Scotia Health Authority, Central Zone, Halifax, NS, Canada
- Department of Medicine, Dalhousie University, Halifax, NS, Canada
| | - Jeffrey Perl
- Department of Medicine, University of Toronto, Toronto, ON, Canada
- Division of Nephrology, St. Michael’s Hospital, Unity Health, Toronto, ON, Canada
| | - Manish M. Sood
- The Ottawa Hospital Research Institute, The Ottawa Hospital, Ottawa, ON, Canada
| | - Navdeep Tangri
- Department of Medicine, Max Rady College of Medicine, University of Manitoba, Winnipeg, MB, Canada
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do Vale MS, Marques PF, Cavalcante MCV, Brito MN, dos Santos AM, Salgado-Filho N, Duarte JLMB. Renal deficit and associated factors in children born with low birth weight. J Bras Nefrol 2024; 46:62-69. [PMID: 37015048 PMCID: PMC10962415 DOI: 10.1590/2175-8239-jbn-2022-0154en] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2022] [Accepted: 01/13/2023] [Indexed: 04/06/2023] Open
Abstract
INTRODUCTION Kidney problems may be due to low birth weight alone or may occur in association with other conditions. The objective this study was to evaluate the association between maternal and birth characteristics, anthropometric measurements, and kidney function deficit in low birth weight infants. METHODS Cross-sectional study with children who were born weighing < 2500 grams and were under outpatient follow-up. Maternal factors investigated were prenatal care and presence of hypertension, diabetes, and infection during pregnancy. The children's variables were sex, gestational age, birth weight, Apgar score, use of nephrotoxic medications, age, body weight at the time of evaluation, height, and serum creatinine and cystatin C dosages. The glomerular filtration rate (GFR) was estimated with the combined Zapittelli equation. Multivariate logistic regression model was used for identification of associated factors, with renal function deficit (GFR < 60 mL/min/1.73 m2) as the dependent variable. RESULTS Of the 154 children evaluated, 34.42% had kidney function deficit. Most of them had a gestational age > 32 weeks (56.6%), a mean birth weight of 1439.7 grams, and mean estimated GFR of 46.9 ± 9.3 mL/min/1.73 m2. There was a significant association of GFR < 60 mL/min/1.73 m2 with children's current weight and use of nephrotoxic drugs. DISCUSSION Children born with low birth weight had a high prevalence of kidney function deficit and current normal weight was a protective factor while the use of nephrotoxic drugs during perinatal period increased the chance of kidney deficit. These findings reinforce the need to evaluate the kidney function in these children, especially those who use nephrotoxic drugs.
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Affiliation(s)
| | | | | | - Mateus Noleto Brito
- Universidade Federal do Maranhão, Departamento de Medicina I, São
Luís, MA, Brazil
| | | | | | - José Luiz M. B. Duarte
- Universidade do Estado do Rio de Janeiro, Departamento de Pediatria,
Rio de Janeiro, RJ, Brazil
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Sheng L, Hu M, Ji C, Xu X. Several laboratory variables indicate severity and prognosis of COVID-19. J Int Med Res 2024; 52:3000605231222428. [PMID: 38194472 PMCID: PMC10777798 DOI: 10.1177/03000605231222428] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2023] [Accepted: 12/01/2023] [Indexed: 01/11/2024] Open
Abstract
OBJECTIVE While several laboratory variables have been used to assess COVID-19 disease, to our knowledge, no attempt has previously been made to compare differences across different patient groups. We attempted to evaluate the relationship between laboratory variables and severity of the disease as well as on prognosis. METHOD We searched BioLINCC database and identified three studies which had separately included outpatients, inpatients, and ICU patients. For this re-analysis, we extracted data on general demography, laboratory variables and outcome. RESULT In total, 2454 participants (496 outpatients [Study 1], 478 inpatients [Study 2], and 1480 ICU patients [Study 3]) were included in the analysis. We found three laboratory variables (i.e., creatinine, aspartate transferase, and albumin) were not only prognostic factors for outcome of inpatients with COVID-19, but also reflected disease severity as they were significantly different between inpatients and ICU patients. These three laboratory variables are an indication of kidney function, liver function, and nutritional status. CONCLUSION For patients with COVID-19, in addition to monitoring infectious disease indicators, we need to pay attention to liver function, renal function, and take timely measures to correct them to improve prognosis.
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Affiliation(s)
- Lingxiang Sheng
- Department of Critical Medicine, Tongde Hospital of Zhejiang Province, China
| | - Mahong Hu
- Department of Critical Medicine, Tongde Hospital of Zhejiang Province, China
| | - Conghua Ji
- School of Public Health, Zhejiang Chinese Medical University, China
- Institute of Respiratory Diseases, Zhejiang Chinese Medical University, China
| | - Xiujuan Xu
- Department of Critical Medicine, Tongde Hospital of Zhejiang Province, China
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26
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Delgado C, Powe NR, Chertow GM, Grimes B, Johansen KL. Muscle Mass and Serum Creatinine Concentration by Race and Ethnicity among Hemodialysis Patients. J Am Soc Nephrol 2024; 35:66-73. [PMID: 37822022 PMCID: PMC10786608 DOI: 10.1681/asn.0000000000000240] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2023] [Accepted: 09/14/2023] [Indexed: 10/13/2023] Open
Abstract
SIGNIFICANCE STATEMENT Serum creatinine is a product of skeletal muscle metabolism. Differences in serum creatinine concentration between Black and non-Black individuals have been attributed to differences in muscle mass but have not been thoroughly examined. Furthermore, other race and ethnic groups have not been considered. If differences in body composition explain differences in serum concentration by race or ethnicity, then estimates of body composition could be used in eGFR equations rather than race. Adjustment for intracellular water (ICW) as a proxy of muscle mass among patients with kidney failure in whom creatinine clearance should minimally influence serum concentration does not explain race- and ethnicity-dependent differences. BACKGROUND Differences in serum creatinine concentration among groups defined by race and ethnicity have been ascribed to differences in muscle mass. We examined differences in serum creatinine by race and ethnicity in a cohort of patients receiving hemodialysis in whom creatinine elimination by the kidney should have little or no effect on serum creatinine concentration and considered whether these differences persisted after adjustment for proxies of muscle mass. METHODS We analyzed data from 501 participants in the A Cohort Study to Investigate the Value of Exercise in ESKD/Analyses Designed to Investigate the Paradox of Obesity and Survival in ESKD study who had been receiving hemodialysis for >1 year. We examined the independent associations among race and ethnicity (Black, Asian, non-Hispanic White, and Hispanic), serum creatinine, and ICW (L/m 2 ), a proxy for muscle mass, derived by whole-body multifrequency bioimpedance spectroscopy, using multivariable linear regression with adjustment for several demographic, clinical, and laboratory characteristics. We examined the association of race and ethnicity with serum creatinine concentration with and without adjustment for ICW. RESULTS Black, Asian, and Hispanic patients had higher serum creatinine concentrations (+1.68 mg/dl [95% confidence interval (CI), 1.09 to 2.27], +1.61 mg/dl [95% CI, 0.90 to 2.32], and +0.83 [95% CI, 0.08 to 1.57], respectively) than non-Hispanic White patients. Overall, ICW was associated with serum creatinine concentration (0.26 mg/dl per L/m 2 ICW; 95% CI, 0.006 to 0.51) but was not statistically significantly different by race and ethnicity. Black, Asian, and Hispanic race and ethnicity remained significantly associated with serum creatinine concentration after adjustment for ICW. CONCLUSION Among patients receiving dialysis, serum creatinine was higher in Black, Asian, and Hispanic patients than in non-Hispanic White patients. Differences in ICW did not explain the differences in serum creatinine concentration across race groups.
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Affiliation(s)
- Cynthia Delgado
- Division of Nephrology, University of California, San Francisco and Nephrology Section, San Francisco VA Medical Center, San Francisco, California
| | - Neil R. Powe
- Department of Medicine, University of California, San Francisco and Priscilla Chan and Mark Zuckerberg San Francisco General Hospital, San Francisco, California
| | - Glenn M. Chertow
- Departments of Medicine and Epidemiology and Population Health, Stanford University, Palo Alto, California
| | - Barbara Grimes
- Department of Epidemiology and Biostatistics, University of California, San Francisco, San Francisco, California
| | - Kirsten L. Johansen
- Department of Medicine, Division of Nephrology, Hennepin Healthcare, Minneapolis, Minnesota
- Department of Medicine, University of Minnesota, Minneapolis, Minnesota
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Shetty NS, Parcha V, Patel N, Pampana A, Kalra R, Pandey A, Li P, Morris AA, Prabhu SD, Arora G, Arora P. Incident Heart Failure Risk Reclassification With Race-Independent Estimated Glomerular Filtration Rate: A National Heart, Lung, and Blood Institute Pooled Cohorts Analysis. J Card Fail 2024; 30:14-22. [PMID: 37543186 PMCID: PMC10838360 DOI: 10.1016/j.cardfail.2023.07.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2023] [Revised: 05/30/2023] [Accepted: 07/13/2023] [Indexed: 08/07/2023]
Abstract
BACKGROUND This study compared the predictive value of the race-independent creatinine- and cystatin C-based estimated glomerular filtration rate (eGFRcr-cys) and the race-dependent creatinine-based eGFR (eGFRcr) for incident heart failure (HF). METHODS This study combined the participant-level data from ARIC (Atherosclerosis Risk in Communities) (visit 4) and MESA (Multi-Ethnic Study of Atherosclerosis) (visit 1) to calculate eGFRcr-cys and eGFRcr. The primary outcome of the study was adjudicated incident HF over a follow-up period of 10 years. Multivariable Cox models were used to assess the risk of incident HF with the quartiles of eGFRcr-cys and eGFRcr. RESULTS Among 15,615 individuals (median age: 62 [57-68] years; 55.0% females; 23.9% Black), the median eGFRcr-cys and eGFRcr were 91.4 (79.4, 102.0) mL/min/1.73m2 and 84.7 (72.0, 94.7) mL/min/1.73m2, respectively. Compared with the fourth quartile of eGFRcr-cys, the hazard ratio for incident HF was 1.02 (95% CI:0.80-1.30) in the third quartile, 1.02 (95% CI:0.80-1.30) in the second quartile, and 1.47 (95% CI:1.16-1.86) in the first quartile. Compared with the 4th quartile of the eGFRcr, the risk of incident HF was similar in the 3rd (HRadj:0.90 [95% CI:0.73-1.12]), 2nd (HRadj: 0.96 [95% CI:0.77-1.20]), and 1st (HRadj:1.15 [95% CI:0.93-1.44]) quartiles. C-statistics were similar for the multivariable-adjusted Cox models for incident HF using eGFRcr (0.80 [0.79-0.81]) and eGFRcr-cys (0.80 [0.79-0.82]). CONCLUSION The eGFRcr and eGFRcr-cys had comparable predictive values for incident HF.
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Affiliation(s)
- Naman S Shetty
- Division of Cardiovascular Disease, University of Alabama at Birmingham, Birmingham, AL
| | - Vibhu Parcha
- Division of Cardiovascular Disease, University of Alabama at Birmingham, Birmingham, AL
| | - Nirav Patel
- Division of Cardiovascular Disease, University of Alabama at Birmingham, Birmingham, AL
| | - Akhil Pampana
- Division of Cardiovascular Disease, University of Alabama at Birmingham, Birmingham, AL
| | - Rajat Kalra
- Cardiovascular Division, University of Minnesota, Minneapolis, MN
| | - Ambarish Pandey
- Division of Cardiology, Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas, TX
| | - Peng Li
- School of Nursing, University of Alabama at Birmingham, Birmingham, AL
| | - Alanna A Morris
- Division of Cardiology, Emory University School of Medicine, Atlanta, GA
| | - Sumanth D Prabhu
- Division of Cardiology, Washington University in St. Louis School of Medicine, St. Louis, MO
| | - Garima Arora
- Division of Cardiovascular Disease, University of Alabama at Birmingham, Birmingham, AL
| | - Pankaj Arora
- Division of Cardiovascular Disease, University of Alabama at Birmingham, Birmingham, AL; Section of Cardiology, Birmingham Veterans Affairs Medical Center, Birmingham, AL.
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Chiang CC, Tseng WC, Tsai WT, Huang CS. Handheld Biosensor System Based on a Gradient Grating Period Guided-Mode Resonance Device. Biosensors (Basel) 2023; 14:21. [PMID: 38248398 PMCID: PMC10813047 DOI: 10.3390/bios14010021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/03/2023] [Revised: 12/20/2023] [Accepted: 12/29/2023] [Indexed: 01/23/2024]
Abstract
Handheld biosensors have attracted substantial attention for numerous applications, including disease diagnosis, drug dosage monitoring, and environmental sensing. This study presents a novel handheld biosensor based on a gradient grating period guided-mode resonance (GGP-GMR) sensor. Unlike conventional GMR sensors, the proposed sensor's grating period varies along the device length; hence, the resonant wavelength varies linearly along the device length. If a GGP-GMR sensor is illuminated with a narrow band of light at normal incidence, the light resonates and reflects at a specific period but transmits at other periods; this can be observed as a dark band by using a complementary metal oxide semiconductor (CMOS) underneath the sensor. The concentration of a target analyte can be determined by monitoring the shift of this dark band. We designed and fabricated a handheld device incorporating a light-emitting diode (LED) light source, the necessary optics, an optofluidic chip with an embedded GGP-GMR sensor, and a CMOS. LEDs with different beam angles and bandpass filters with different full width at half maximum values were investigated to optimize the dark band quality and improve the accuracy of the subsequent image analysis. Substrate materials with different refractive indices and waveguide thicknesses were also investigated to maximize the GGP-GMR sensor's figure of merit. Experiments were performed to validate the proposed handheld biosensor, which achieved a limit of detection (LOD) of 1.09 × 10-3 RIU for bulk solution measurement. The sensor's performance in the multiplexed detection of albumin and creatinine solutions at concentrations of 0-500 μg/mL and 0-10 mg/mL, respectively, was investigated; the corresponding LODs were 0.66 and 0.61 μg/mL.
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Affiliation(s)
| | | | | | - Cheng-Sheng Huang
- Department of Mechanical Engineering, National Yang Ming Chiao Tung University, Hsinchu 30010, Taiwan; (C.C.C.); (W.-C.T.); (W.-T.T.)
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29
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Li L, Xu Z, Jiang L, Zhuang L, Huang J, Liu D, Wu Q. Triglyceride-Glucose Index and Its Correlates: Associations with Serum Creatinine and Estimated Glomerular Filtration Rate in a Cross-Sectional Study from CHARLS 2011-2015. Metab Syndr Relat Disord 2023. [PMID: 38133543 DOI: 10.1089/met.2023.0188] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2023] Open
Abstract
Background: Chronic kidney disease (CKD) has emerged as a significant global public health challenge, and the estimated glomerular filtration rate (eGFR) is widely used due to its convenience, low cost, and broad clinical applicability. Concurrently, insulin resistance (IR) serves as a crucial marker of metabolic disturbance, and alternative indicators have garnered increasing attention in CKD research in recent years. Objective: This study aims to investigate the relationship between IR-related indices (TyG index, TyG-BMI index, and TyG-WC index) and serum creatinine levels, as well as the eGFR, with the intention of uncovering their potential roles in the assessment of renal function. Methods: We analyzed nationally representative cross-sectional data from a cohort of individuals aged 45 and above in China, comprising 11,608 participants. Participants were categorized into different groups based on quartiles of the TyG index, and multiple factors, including gender, age, lifestyle, and co-morbidities, were adjusted for using linear regression models. Results: By linear regression, TyG, TyG-BMI, and TyG-WC indices were significantly positively correlated with serum creatinine and significantly negatively correlated with eGFR. Results showed similar trends when TyG, TyG-BMI, and TyG-WC indices were used as categorical variables. In the fully adjusted model, the highest quartile of serum creatinine was higher than the first quartile for TyG, TyG-BMI, and TyG-WC indices, with β values of 2.673, 3.67, and 1.937 mg/dL, respectively; the highest quartile of eGFR was lower than the first quartile, with β values of -2.4, -2.955, and -1.823 mL/min/1.73 m2. P values were statistically significant. Conclusions: This study indicates a consistent correlation between the TyG index and its related indices with serum creatinine levels and eGFR among the middle aged and elderly population in China. These findings suggest the potential utility of these indices in early screening and management of the risk of chronic kidney disease.
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Affiliation(s)
- Lei Li
- Department of Laboratory Medicine, The First Affiliated Hospital of Wannan Medical College, Wuhu, China
| | - Zichen Xu
- Department of Laboratory Medicine, The First Affiliated Hospital of Wannan Medical College, Wuhu, China
| | - Luqing Jiang
- Department of Laboratory Medicine, The First Affiliated Hospital of Wannan Medical College, Wuhu, China
| | - Lingdan Zhuang
- Department of Laboratory Medicine, The First Affiliated Hospital of Wannan Medical College, Wuhu, China
| | - Jianjun Huang
- Department of Laboratory Medicine, The First Affiliated Hospital of Wannan Medical College, Wuhu, China
| | - Daoqin Liu
- Department of Kidney Medicine, The First Affiliated Hospital of Wannan Medical College, Wuhu, China
| | - Qiwen Wu
- Department of Laboratory Medicine, The First Affiliated Hospital of Wannan Medical College, Wuhu, China
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Karaseva EA, Martynov VA, Filatova TE, Maleev VV, Grishin VY, Pronin NS, Verbitskaya EI, Popova VI. [Features of the course of COVID-19 in patients with type 2 diabetes mellitus]. TERAPEVT ARKH 2023; 95:913-918. [PMID: 38158945 DOI: 10.26442/00403660.2023.11.202478] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2023] [Accepted: 11/23/2023] [Indexed: 01/03/2024]
Abstract
AIM To identify the features of the course of COVID-19 in patients with type 2 diabetes mellitus (T2DM), depending on the intake of hypoglycemic therapy at the prehospital stage, in conjunction with the functional state of the kidneys. MATERIALS AND METHODS A retrospective analysis of 291 case histories of patients with COVID-19 and T2DM hospitalized in the infection department of Semashko Regional Clinical Hospital from January to December 2021, including the main clinical and laboratory parameters. Results. Among hospitalized patients with COVID-19, patients with T2DM had a higher mortality rate. An analysis of the case histories of deceased patients with COVID-19 and T2DM showed that at admission, body mass index (BMI), C-reactive protein, and creatinine were higher than those of survivors and amounted to BMI - 33 [30; 39] and 33 [28; 36] kg/m3; p=0.039, C-reactive protein - 77 [47.5; 106.0] and 57 [27.0; 89.0] mg/l; p=0.015, in terms of creatinine level - 89 [70.0; 144.0] and 82 [66.0; 101.0] µmol/l; p=0.039, respectively. It was found that in the second week of hospitalization in the group of deceased patients with COVID-19 and T2DM, the creatinine level was statistically significantly higher than in surviving patients and amounted to 94.5 [71.5; 141.0] and 72.5 [57.0; 88.0] µmol/L; p<0.001, respectively. The probability of death in hospitalized patients with type 2 COVID-19 and T2DM depended on BMI and creatinine levels at the second week of hospitalization. Patients with prehospital correction of hyperglycemia dipeptidyl peptidase-4 inhibitors (iDPP-4)/ glucagon-like peptide-1 receptor agonists (agGLP-1)/ sodium-glucose co-transporter 2 inhibitors (iSGLT-2) had significantly lower creatinine levels at week 2 of hospitalization. CONCLUSION In patients with moderate to severe COVID-19 with concomitant T2DM, special attention should be paid to the combination of high BMI and creatinine in the second week of hospitalization, which is a prognostically unfavorable predictor of death in such patients.
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Affiliation(s)
| | | | | | - V V Maleev
- Central Research Institute of Epidemiology
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Gunasekara TDKSC, Herath C, De Silva PMCS, Jayasundara N. Exploring the Utility of Urinary Creatinine Adjustment for KIM-1, NGAL, and Cystatin C for the Assessment of Kidney Function: Insights from the C-KidnEES Cohort. Children (Basel) 2023; 11:15. [PMID: 38255329 PMCID: PMC10814906 DOI: 10.3390/children11010015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/26/2023] [Revised: 10/21/2023] [Accepted: 10/26/2023] [Indexed: 01/24/2024]
Abstract
Normalization of urinary biomarkers of kidney injury is a common practice in clinical and research settings to account for variations in urine concentration, and urinary creatinine is often used as a reference. However, to date, there is no consensus on the adjustment of urinary biomarkers with creatinine, and both absolute and creatinine-adjusted biomarker levels are adopted for making interpretations of kidney health. Hence, the present study aimed to investigate the associations of urinary creatinine with three widely used kidney injury biomarkers, KIM-1, NGAL, and cystatin C, to validate the applicability of urinary creatinine as a reference for normalization. A cross-sectional study was performed with 2100 students, 10-18 years of age in the Children's Kidney Environmental Exposure Study (C-KidnEES) cohort established in Sri Lanka. As identified in linear regression analyses, normalization of urinary KIM-1, NGAL, and Cys-C to urinary creatinine did not result in significant under-adjustment or over-adjustment to the absolute urinary concentrations, giving no specific rationale for creatinine adjustment. Hence, absolute urinary concentrations of the above biomarkers can be adopted for the characterization of subclinical kidney injury in adolescents in community studies where early morning urine sampling is practiced. However, for spot urine samples, consideration of both absolute and creatinine-adjusted biomarker levels would be a better approach.
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Affiliation(s)
| | - Chula Herath
- Department of Nephrology, Sri Jayewardenepura General Hospital, Colombo 10100, Sri Lanka;
| | | | - Nishad Jayasundara
- Nicholas School of the Environment, Duke University, Durham, NC 27708, USA;
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Abstract
The estimated glomerular filtration rate (eGFR) provides insight into cardiovascular disease (CVD) risk stratification and proactive management. Accumulating evidence suggests that combining eGFR calculated from serum cystatin C (eGFRcys) and from serum creatinine (eGFRcrea) improves CVD risk stratification over eGFRcrea alone. The term selective glomerular hypofiltration syndrome (SGHS) or shrunken pore syndrome has been proposed to define an eGFRcys:eGFRcrea ratio <1, which is hypothesized to result from a reduced glomerular filtration of 5- to 30-kDa molecules as compared with smaller molecules. SGHS may be identified in people with normal or reduced measured GFR, but the prevalence depends on the cut-off value of the eGFRcys:eGFRcrea ratio used, which is not yet standardized. SGHS is strongly associated with increased CVD and mortality risks and it may offer an opportunity to expand our understanding of the mechanisms linking GFR disorders with CVD risk (e.g. an altered plasma proteome), which may guide treatment decisions. However, muscle wasting may also contribute to a reduced eGFRcys:eGFRcrea ratio and there are open questions regarding the pathophysiology of a reduced eGFRcys:eGFRcrea ratio, the reference cut-off values of the ratio to define the syndrome and its clinical implications. We now critically review the SGHS concept, its pathophysiological basis and links to CVD and the potential consequences for clinical practice and propose a research agenda.
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Affiliation(s)
- Borja Quiroga
- IIS-La Princesa, Nephrology Department, Hospital Universitario de la Princesa, Madrid, Spain
| | - Alberto Ortiz
- Division of Nephrology IIS-Fundacion Jimenez Diaz, Department of Medicine, Universidad Autónoma de Madrid, Madrid, Spain
- RICORS2040, Carlos III Institute of Health, Madrid, Spain
| | - Javier Díez
- Center of Applied Medical Research and School of Medicine, University of Navarra, Pamplona, Spain
- Centro de Investigación Biomédica en Red de la Enfermedades Cardiovasculares, Carlos III Institute of Health, Madrid, Spain
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Vaynrub A, Ning Y, Kurlansky P, Wang AS, Beck J, Fried JA, Takeda K. Acute kidney injury during extracorporeal life support in cardiogenic shock: Does flow matter? Perfusion 2023:2676591231220793. [PMID: 38084918 DOI: 10.1177/02676591231220793] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2023]
Abstract
BACKGROUND This study examines the role of extracorporeal life support flow in the development of acute kidney injury in cardiogenic shock. METHODS We performed a retrospective analysis of 465 patients placed on extracorporeal life support at our institution between January 2015 and December 2020 for cardiogenic shock. Flow index was calculated by dividing mean flow by body surface. Stages of acute kidney injury were determined according to Kidney Disease: Improving Global Outcomes (KDIGO) organization guidelines. RESULTS There were 179 (38.5%) patients who developed acute kidney injury, 63.1% of which were classified as Stage 3--the only subgroup associated with 1-year mortality (hazard ratio = 2.03, p < .001). Risk of kidney injury increased up to a flow index of 1.6 L/min/m2, and kidney injury was more common among patients with flow index greater than 1.6 L/min/m2 (p = .034). Those with kidney injury had higher baseline lactate levels (4.4 vs 3.1, p = .04), and Stage 3 was associated wit higher baseline creatinine (p < .001). CONCLUSIONS In our cohort, kidney injury was common and Stage 3 kidney injury was associated with worse outcomes compared to other stages. Low flow was not associated with increased risk of kidney injury. Elevated baseline lactate and creatinine among patients with acute kidney injury suggest underlying illness severity, rather than flow, may influence kidney injury risk.
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Affiliation(s)
- Anna Vaynrub
- Division of Cardiothoracic and Vascular Surgery, Department of Surgery, Columbia University, New York, NY, United States
| | - Yuming Ning
- Center for Innovation and Outcomes Research, Department of Surgery, Columbia University, New York, NY, United States
| | - Paul Kurlansky
- Division of Cardiothoracic and Vascular Surgery, Department of Surgery, Columbia University, New York, NY, United States
- Center for Innovation and Outcomes Research, Department of Surgery, Columbia University, New York, NY, United States
| | - Amy S Wang
- Division of Cardiothoracic and Vascular Surgery, Department of Surgery, Columbia University, New York, NY, United States
| | - James Beck
- Clinical Perfusion and Anesthesia Support Services, New York-Presbyterian Hospital, New York, NY, United States
| | - Justin A Fried
- Division of Cardiology, Department of Medicine, Columbia University, New York, NY, United States
| | - Koji Takeda
- Division of Cardiothoracic and Vascular Surgery, Department of Surgery, Columbia University, New York, NY, United States
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Almeida WLDC, Barreto SM, Vidigal PG, Mill JG. Validation of equations to estimate kidney function with and without adjustment by race/color in Brazilian adults (ELSA-Brazil). Rev Bras Epidemiol 2023; 26:e230057. [PMID: 38088716 PMCID: PMC10715322 DOI: 10.1590/1980-549720230057] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2023] [Revised: 07/29/2023] [Accepted: 08/01/2023] [Indexed: 12/18/2023] Open
Abstract
OBJECTIVE To evaluate accuracy and agreement between creatinine clearance (CrCl) measured in 12-h urine and glomerular filtration rate (GFR) calculated by the Modification of Diet in Renal Disease (MDRD-4) and the Chronic Kidney Disease Epidemiology Collaboration (CKD-EPI) formulas, with and without adjustment for race/color. METHODS Baseline data from the Longitudinal Study of Adult Health (ELSA-Brazil) in adults (35-74 years of age) of both genders were used. Serum creatinine was measured in fasting blood and urinary creatinine was measured in an overnight 12-h urine collect. The agreement between CrCl and the calculated GFR was analyzed by the Bland-Altman method. One-way analysis of variance (ANOVA) with race/color factor was used to verify differences between means of CrCl and GFR with and without correction for race/color. Statistical significance was accepted for p<0.05. RESULTS From 15,105 participants in the ELSA-Brazil, 12,813 had a validated urine collect. The Bland-Altman diagrams showed that formulas and CrCl agree with each other with a better accuracy for GFR <90 mL/.min x 1.73m2. The adjustment by race/color increased data dispersion. In this range, one-way ANOVA of CrCl with race/color factor showed similarity between groups (p=0.27). CONCLUSION MDRD-4 and CKD-EPI are useful formulas for screening cases of chronic kidney disease, and correction by race/color, only in blacks or in black and brown subjects, proved to be unnecessary and reduced the reliability of the equations.
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Affiliation(s)
- Wagner Luis da Cruz Almeida
- Universidade Federal da Bahia, School of Pharmacy, Department of Medicines – Salvador (BA), Brazil
- Universidade Federal do Espírito Santo, Postgraduate Program in Collective Health – Vitória (ES), Brazil
| | - Sandhi Maria Barreto
- Universidade Federal de Minas Gerais, School of Medicine, Department of Social and Preventive Medicine, Hospital das Clínicas/Ebserh – Belo Horizonte (MG), Brazil
| | - Pedro Guatimosim Vidigal
- Universidade Federal de Minas Gerais, School of Medicine, Department of Clinical Pathology – Belo Horizonte (MG), Brazil
| | - José Geraldo Mill
- Universidade Federal do Espírito Santo, Postgraduate Program in Collective Health – Vitória (ES), Brazil
- Universidade Federal do Espírito Santo, Department of Physiological Sciences – Vitória (ES), Brazil
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Geißer D, Hetzel L, Westenfeld R, Boege F. Questionable Validity of Creatinine-Based eGFR in Elderly Patients but Cystatin C Is Helpful in First-Line Diagnostics. Geriatrics (Basel) 2023; 8:120. [PMID: 38132491 PMCID: PMC10742602 DOI: 10.3390/geriatrics8060120] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2023] [Revised: 12/01/2023] [Accepted: 12/04/2023] [Indexed: 12/23/2023] Open
Abstract
BACKGROUND The recommended chronic kidney disease (CKD) first-line diagnostic test is based on the creatinine-derived (estimated) glomerular filtration rate (eGFR). Cystatin C use may provide a better assessment. METHODS We compared creatinine- and cystatin C-derived eGFR determination as the first-line diagnostic test for 112 hospital patients aged > 60 years (median = 76 years). The patients were judged to not have CKD (no-CKD group) according to the first-line diagnostic recommendations (n = 61, eGFR (CKD Epidemiology Collaboration (CKD-EPI)) ≥ 60 mL/min/1.73 m2, total urine protein < 150 mg/g creatinine, urinary red/white blood cells not increased) or classified to be at risk for kidney insufficiency due to aortic valve dysfunction (at-risk group; n = 51). The accuracy of the eGFR values was evaluated retrospectively with the final case diagnoses. RESULTS The eGFR (Caucasian, Asian, pediatric, and adult formula (CAPA)) was found to be linearly correlated to the eGFR (CKD-EPI) (R2 = 0.5, slope = 0.69, p < 0.0001). In 93/112 (>80%) cases, the eGFR (CAPA) yielded lower values (on average ≈-20%). In 55/112 (49%) cases, the cystatin C-derived CKD stage was lower. CKD reclassification from no-CKD to a kidney-insufficient state (i.e., CKD1/2 to CKD3a/b or 4) or reclassification to a more severe kidney insufficiency (i.e., CKD3a → 3b/4 or 3b → 4) was found in 41/112 (37%) cases. A worse CKD classification (no-CKD → kidney-insufficient) based on the eGFR (CAPA) was plausible in 30% of cases in light of the final case diagnoses. CONCLUSION In elderly patients (>60 years), renal function appears to be systematically overestimated by the creatinine-based eGFR (CKD-EPI), indicating that, for this group, the cystatin C-based eGFR (CAPA) should be used as the first-line diagnostic test.
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Affiliation(s)
- Dario Geißer
- Central Institute of Clinical Chemistry and Laboratory Diagnostics, Medical Faculty, Heinrich Heine University and University Hospital, 40225 Düsseldorf, Germany;
| | - Lina Hetzel
- Division of Cardiology, Pulmonology and Vascular Medicine, Medical Faculty, Heinrich-Heine University, 40225 Düsseldorf, Germany; (L.H.); (R.W.)
| | - Ralf Westenfeld
- Division of Cardiology, Pulmonology and Vascular Medicine, Medical Faculty, Heinrich-Heine University, 40225 Düsseldorf, Germany; (L.H.); (R.W.)
| | - Fritz Boege
- Central Institute of Clinical Chemistry and Laboratory Diagnostics, Medical Faculty, Heinrich Heine University and University Hospital, 40225 Düsseldorf, Germany;
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You D, Zhong L, Yin R, Song L. Increase in serum creatinine levels after PARP inhibitor treatment. J OBSTET GYNAECOL 2023; 43:2171781. [PMID: 36708521 DOI: 10.1080/01443615.2023.2171781] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- Di You
- Department of Obstetrics and Gynecology, West China Second University Hospital, Sichuan University, Chengdu, China.,Ministry of Education, Key Laboratory of Birth Defects and Related Diseases of Women and Children (Sichuan University), Chengdu, China
| | - Lan Zhong
- Department of Obstetrics and Gynecology, West China Second University Hospital, Sichuan University, Chengdu, China.,Ministry of Education, Key Laboratory of Birth Defects and Related Diseases of Women and Children (Sichuan University), Chengdu, China
| | - Rutie Yin
- Department of Obstetrics and Gynecology, West China Second University Hospital, Sichuan University, Chengdu, China.,Ministry of Education, Key Laboratory of Birth Defects and Related Diseases of Women and Children (Sichuan University), Chengdu, China
| | - Liang Song
- Department of Obstetrics and Gynecology, West China Second University Hospital, Sichuan University, Chengdu, China.,Ministry of Education, Key Laboratory of Birth Defects and Related Diseases of Women and Children (Sichuan University), Chengdu, China
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Adingwupu OM, Barbosa ER, Palevsky PM, Vassalotti JA, Levey AS, Inker LA. Cystatin C as a GFR Estimation Marker in Acute and Chronic Illness: A Systematic Review. Kidney Med 2023; 5:100727. [PMID: 37928862 PMCID: PMC10623366 DOI: 10.1016/j.xkme.2023.100727] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2023] Open
Abstract
Rationale & Objective Creatinine-based GFR estimating (eGFRcr) equations may be inaccurate in populations with acute or chronic illness. The accuracy of GFR equations that use cystatin C (eGFRcys) or creatinine-cystatin C (eGFRcr-cys) is not well studied in these populations. Study Design A systematic review of original articles identified from PubMed and expert sources. Two reviewers screened articles independently and identified those meeting inclusion criteria. Setting & Study Populations Adults and children with acute or chronic illness. Selection Criteria for Studies Studies published since 2011 that compared performance of eGFRcr, eGFRcys, and eGFRcr-cys relative to measured GFR (mGFR), used standardized assays for creatinine or cystatin C, and used eGFR equations developed using such assays. Studies of ambulatory clinical populations or research studies in populations with only CKD, kidney transplant recipients, only diabetes, kidney donor candidates, and community-based cohorts were excluded. Data Extraction Data extracted from full text. Analytical Approach Bias and percentages of estimates within 30% of mGFR (P30) of eGFR compared with mGFR were evaluated. Results Of the 179 citations, 26 studies met the inclusion criteria: 24 in adults and 2 in children in clinical populations with cancer (n=5), HIV (n=5), cirrhosis (n=3), liver transplant (n=3), heart failure (n=2), neuromuscular diseases (n=1) critical illness (n=5), and obesity (n=2). In general, eGFRcr-cys had greater accuracy than eGFRcr or eGFRcys equations among study populations with cancer, HIV, and obesity, but did not perform consistently better in cirrhosis, liver transplant, heart failure, neuromuscular disease, and critical illness. Limitations Participants were selected because of concern for inaccurate eGFRcr, which may bias results. Most studies had small sample sizes, limiting generalizability. Conclusions eGFRcr-cys improves GFR estimation in populations with a variety of acute and chronic illnesses, providing indications for cystatin C measurement. Performance was poor in many studies, suggesting the need for more frequent mGFR. Plain-Language Summary Kidney function, specifically glomerular filtration rate (GFR), estimated using creatinine (eGFRcr) is often inaccurate in people with acute and chronic illness. The accuracy of estimates using cystatin C alone (eGFRcys) or together with creatinine (eGFRcr-cys) is not well studied in these populations. We conducted a systematic review to address the knowledge gap. Of the 179 papers reviewed, we identified 26 studies in clinical populations with cancer (n=5); HIV (n=5); cirrhosis (n=3); liver transplant (n=3); heart failure (n=2); neuromuscular disease (n=1); critical illness (n=5); and obesity (n=2). In general, eGFRcr-cys improved the GFR estimation in HIV, cancer, and obesity, providing indications for cystatin C measurement. Performance was poor in many studies, suggesting the need for more frequent measured GFR.
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Affiliation(s)
- Ogechi M. Adingwupu
- Department of Medicine, Division of Nephrology, Tufts Medical Center, Boston, MA
| | | | - Paul M. Palevsky
- Renal Section, Medical Service, Veterans Affairs Pittsburgh Healthcare System, Pittsburgh, PA
| | - Joseph A. Vassalotti
- Icahn School of Medicine at Mount Sinai, New York, NY; National Kidney Foundation, Inc, New York, NY
| | - Andrew S. Levey
- Department of Medicine, Division of Nephrology, Tufts Medical Center, Boston, MA
| | - Lesley A. Inker
- Department of Medicine, Division of Nephrology, Tufts Medical Center, Boston, MA
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Magoon R, Jose J. Comment on: "Outcomes of critically ill older adults with COVID-19: a multicentre retrospective cohort study". Can J Anaesth 2023; 70:2020-2021. [PMID: 37821675 DOI: 10.1007/s12630-023-02598-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2023] [Revised: 07/23/2023] [Accepted: 07/24/2023] [Indexed: 10/13/2023] Open
Affiliation(s)
- Rohan Magoon
- Sri Jayadeva Institute of Cardiovascular Sciences and Research, Bangalore, Karnataka, India
| | - Jes Jose
- Sri Jayadeva Institute of Cardiovascular Sciences and Research, Bangalore, Karnataka, India.
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Vethe NT, Åsberg A, Andersen AM, Heier Skauby R, Bergan S, Midtvedt K. Clinical performance of volumetric finger-prick sampling for the monitoring of tacrolimus, creatinine and haemoglobin in kidney transplant recipients. Br J Clin Pharmacol 2023; 89:3690-3701. [PMID: 37537150 DOI: 10.1111/bcp.15870] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2023] [Revised: 07/07/2023] [Accepted: 07/23/2023] [Indexed: 08/05/2023] Open
Abstract
AIMS Finger-prick sampling has emerged as an attractive tool for therapeutic drug monitoring and associated diagnostics. We aimed to validate the clinical performance of using two volumetric devices (Capitainer® qDBS and Mitra®) for monitoring tacrolimus, creatinine and haemoglobin in kidney transplant (KTx) recipients. Secondarily, we evaluated potential differences between finger-prick sampling performed by healthcare professionals vs. self-sampling, and differences between the two devices. METHODS We compared finger-prick and venous sampling in three settings: microsampling performed by healthcare personnel, self-sampling under supervision, unsupervised self-sampling. The finger-prick samples were analysed with adapted methods and results compared to routine method analysis of the venous blood samples. RESULTS Twenty-five KTx recipients completed the main study and 12 KTx recipients completed a post hoc validation study. For tacrolimus measurements and predicted area under the curve, the proportions within ±20% difference were 79%-96% for Capitainer and 77%-95% for Mitra. For creatinine and haemoglobin, the proportions within ±15% were 92%-100% and 93%-100% for Capitainer and 79%-96% and 67%-92% for Mitra, respectively. Comparing sampling situations, the success rate was consistent for Capitainer (92%-96%), whereas Mitra showed 72%-88% and 52%-72% success rates with samples collected by healthcare personnel and the patients themselves. CONCLUSIONS Capitainer and Mitra are technically feasible for measuring tacrolimus, creatinine and haemoglobin. In the context of self-sampling, Capitainer maintained consistent sampling success and analytical quality. Implementing volumetric finger-prick self-sampling for the monitoring of tacrolimus, creatinine and haemoglobin may simplify and improve the follow-up of KTx recipients.
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Affiliation(s)
- Nils Tore Vethe
- Department of Pharmacology, Oslo University Hospital, Oslo, Norway
| | - Anders Åsberg
- Department of Transplantation Medicine, Oslo University Hospital, Oslo, Norway
- Department of Pharmacy, University of Oslo, Oslo, Norway
| | | | | | - Stein Bergan
- Department of Pharmacology, Oslo University Hospital, Oslo, Norway
- Department of Pharmacy, University of Oslo, Oslo, Norway
| | - Karsten Midtvedt
- Department of Transplantation Medicine, Oslo University Hospital, Oslo, Norway
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Liu F, Liu Y, Lv X, Lun H. Effects of prebiotics, probiotics and synbiotics on serum creatinine in non-dialysis patients: a meta-analysis of randomized controlled trials. Ren Fail 2023; 45:2152693. [PMID: 36636981 PMCID: PMC9848283 DOI: 10.1080/0886022x.2022.2152693] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023] Open
Abstract
OBJECTIVE Serum creatinine level are influenced by many factors. Although accumulated data suggested that prebiotics, probiotics and synbiotics supplements could affect serum creatinine level, the results remained controversial. The aim of the present paper was to evaluate the effects of prebiotics, probiotics and synbiotics on serum creatinine in non-dialysis patients. METHODS PubMed, EMBASE (Excerpta Medica Database) and the Cochrane Library databases were searched for eligible randomized, controlled trials (RCTs) which were limited to English language studies until 30 September 2022. A random-effects model was performed to analyze the impact of pooled trials. RESULT Twelve randomized, controlled trial studies were included in the meta-analysis. Prebiotics, probiotics or synbiotics supplementation did not significantly decrease the serum creatinine levels in non-dialysis patients compared to placebo [standardized mean difference (SMD) = 0.05; 95% confidence interval (CI): (-0.21, 0.31); p = 0.72; I2 = 61%]. CONCLUSION The present meta-analysis indicated that supplementation with prebiotics, probiotics and synbiotics could not act as promising adjuvant therapies to decrease the serum creatinine levels in non-dialysis patients.
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Affiliation(s)
- Fenfen Liu
- Department of Nephrology, The Affiliated Taian City Central Hospital of Qingdao University, Taian, China
| | - Yang Liu
- Senior Department of Cardiology, the Sixth Medical Center, Chinese PLA General Hospital, Beijing, China
| | - Xueai Lv
- Department of Nephrology, The Affiliated Taian City Central Hospital of Qingdao University, Taian, China
| | - Hengzhong Lun
- Department of Clinical Laboratory, The Affiliated Taian City Central Hospital of Qingdao University, Taian, China,CONTACT Hengzhong Lun Department of Clinical Laboratory, The Affiliated Taian City Central Hospital of Qingdao University, Taian, China
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Tio MC, Zhu X, Lirette S, Rule AD, Butler K, Hall ME, Dossabhoy NR, Mosley T, Shafi T. External Validation of a Novel Multimarker GFR Estimating Equation. Kidney360 2023; 4:1680-1689. [PMID: 37986202 PMCID: PMC10758515 DOI: 10.34067/kid.0000000000000304] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/23/2023] [Accepted: 10/26/2023] [Indexed: 11/22/2023]
Abstract
Key Points Using multiple markers may improve GFR estimation especially in settings where creatinine and cystatin C are known to be limited. Panel eGFR is a novel multimarker eGFR equation consisting of age, sex, cystatin C, and nuclear magnetic resonance–measured creatinine, valine, and myo-inositol. eGFR-Cr and eGFR-Cr-CysC may underestimate measured GFR, while panel eGFR was unbiased among younger Black male individuals. Background Using multiple markers may improve accuracy in GFR estimation. We sought to externally validate and compare the performance of a novel multimarker eGFR (panel eGFR) equation among Black and White persons using the Genetic Epidemiology Network of Arteriopathy cohort. Methods We included 224 sex, race/ethnicity, and measured GFR (mGFR) category–matched persons, with GFR measured using urinary clearance of iothalamate. We calculated panel eGFR using serum creatinine, valine, myo-inositol, cystatin C, age, and sex. We compared its reliability with current eGFR equations (2021 CKD Epidemiology Collaboration creatinine [eGFR-Cr] and creatinine with cystatin C [eGFR-Cr-CysC]) using median bias, precision, and accuracy metrics. We evaluated each equation's performance in age, sex, and race subgroups. Results In the overall cohort, 49% were Black individuals, and mean mGFR was 79 ml/min per 1.73 m2. Panel eGFR overestimated mGFR (bias: −2.4 ml/min per 1.73 m2; 95% confidence interval [CI], −4.4 to −0.7), eGFR-Cr-CysC underestimated mGFR (bias: 4.8 ml/min per 1.73 m2; 95% CI, 2.1 to 6.7), while eGFR-Cr was unbiased (bias: 2.0 ml/min per 1.73 m2; 95% CI, −1.1 to 4.6). All equations had comparable accuracy. Among Black male individuals younger than 65 years, both eGFR-Cr (bias: 17.0 ml/min per 1.73 m2; 95% CI, 8.6 to 23.5) and eGFR-Cr-CysC (bias: 14.5 ml/min per 1.73 m2; 95% CI, 6.0 to 19.7) underestimated mGFR, whereas panel eGFR was unbiased (bias: 1.7 ml/min per 1.73 m2; 95% CI, −3.4 to 10.0). Metrics of accuracy for all eGFRs were acceptable in all subgroups except for panel eGFR in Black female individuals younger than 65 years (P30: 73.3%). Conclusions Panel eGFR can be used to estimate mGFR and may have utility among Black male individuals younger than 65 years where current CKD Epidemiology Collaboration equations are biased.
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Affiliation(s)
- Maria Clarissa Tio
- Division of Nephrology, Department of Medicine, University of Mississippi Medical Center, Jackson, Mississippi
| | - Xiaoqian Zhu
- Division of Nephrology, Department of Medicine, University of Mississippi Medical Center, Jackson, Mississippi
- Department of Data Science, Bower School of Population Health, University of Mississippi Medical Center, Jackson, Mississippi
| | - Seth Lirette
- Department of Data Science, Bower School of Population Health, University of Mississippi Medical Center, Jackson, Mississippi
| | - Andrew D. Rule
- Division of Nephrology and Hypertension, Department of Internal Medicine, Mayo Clinic, Rochester, Minnesota
| | - Kenneth Butler
- The Memory Impairment and Neurodegenerative Dementia (MIND) Center, University of Mississippi Medical Center, Jackson, Mississippi
| | - Michael E. Hall
- Division of Cardiology, Department of Medicine, University of Mississippi Medical Center, Jackson, Mississippi
| | - Neville R. Dossabhoy
- Division of Nephrology, Department of Medicine, University of Mississippi Medical Center, Jackson, Mississippi
| | - Thomas Mosley
- The Memory Impairment and Neurodegenerative Dementia (MIND) Center, University of Mississippi Medical Center, Jackson, Mississippi
| | - Tariq Shafi
- Division of Nephrology, Department of Medicine, University of Mississippi Medical Center, Jackson, Mississippi
- Division of Kidney Diseases, Hypertension & Transplantation, Department of Medicine, Houston Methodist Hospital, Houston, Texas
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van Eeghen SA, Wiepjes CM, T'Sjoen G, Nokoff NJ, den Heijer M, Bjornstad P, van Raalte DH. Cystatin C-Based eGFR Changes during Gender-Affirming Hormone Therapy in Transgender Individuals. Clin J Am Soc Nephrol 2023; 18:1545-1554. [PMID: 37678248 PMCID: PMC10723924 DOI: 10.2215/cjn.0000000000000289] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2023] [Accepted: 08/30/2023] [Indexed: 09/09/2023]
Abstract
BACKGROUND Men with CKD tend to experience a faster eGFR decline than women, potentially because of sex hormones. Limited research exists regarding the effect of gender-affirming hormone therapy (GAHT) on kidney function. Furthermore, monitoring kidney function during GAHT is challenging because serum creatinine is confounded by body composition. To investigate the relationship between sex hormones and kidney function, we studied the changes of serum creatinine and serum cystatin C, a filtration marker less affected by sex, during 1 year of GAHT. METHODS As part of the European Network for the Investigation of Gender Incongruence study, we measured serum creatinine and serum cystatin C in 260 transgender women and 285 transgender men before and 12 months after initiating GAHT. Transgender women received estradiol plus cyproterone acetate, while transgender men received testosterone. Cystatin C-based eGFR was calculated using the full-age-spectrum equation. RESULTS In transgender women, cystatin C decreased by 0.069 mg/L (95% confidence interval [CI], 0.049 to 0.089), corresponding with a 7 ml/min per 1.73 m 2 increase in eGFR. In transgender men, cystatin C increased by 0.052 mg/L (95% CI, 0.031 to 0.072), corresponding with a 6 ml/min per 1.73 m 2 decrease in eGFR. Creatinine concentrations decreased (-0.065 mg/dl; 95% CI, -0.076 to -0.054) in transgender women and increased (+0.131 mg/dl; 95% CI, 0.119 to 0.142) in transgender men. Changes in creatinine-based eGFR varied substantially depending on the sex used in the equation. CONCLUSIONS In this cohort of transgender individuals, cystatin C-based eGFR increased with estradiol and antiandrogen therapy and decreased with testosterone therapy.
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Affiliation(s)
- Sarah A. van Eeghen
- Center of Expertise on Gender Dysphoria, Department of Internal Medicine, Amsterdam University Medical Centers, Location VU Medical Center, Amsterdam, The Netherlands
- Department of Endocrinology and Metabolism, Amsterdam University Medical Centers, Location VU Medical Center, Amsterdam, The Netherlands
| | - Chantal M. Wiepjes
- Center of Expertise on Gender Dysphoria, Department of Internal Medicine, Amsterdam University Medical Centers, Location VU Medical Center, Amsterdam, The Netherlands
- Department of Endocrinology and Metabolism, Amsterdam University Medical Centers, Location VU Medical Center, Amsterdam, The Netherlands
| | - Guy T'Sjoen
- Department of Endocrinology, Ghent University Hospital, Ghent, Belgium
| | - Natalie J. Nokoff
- Section of Endocrinology, Department of Pediatrics, University of Colorado School of Medicine, Aurora, Colorado
| | - Martin den Heijer
- Center of Expertise on Gender Dysphoria, Department of Internal Medicine, Amsterdam University Medical Centers, Location VU Medical Center, Amsterdam, The Netherlands
- Department of Endocrinology and Metabolism, Amsterdam University Medical Centers, Location VU Medical Center, Amsterdam, The Netherlands
| | - Petter Bjornstad
- Section of Endocrinology, Department of Pediatrics, University of Colorado School of Medicine, Aurora, Colorado
- Division of Renal Diseases and Hypertension, Department of Medicine, University of Colorado School of Medicine, Aurora, Colorado
| | - Daniël H. van Raalte
- Department of Endocrinology and Metabolism, Amsterdam University Medical Centers, Location VU Medical Center, Amsterdam, The Netherlands
- Diabetes Center, Amsterdam University Medical Centers, Location VU Medical Center, Amsterdam, The Netherlands
- Amsterdam Cardiovascular Sciences, VU University, Amsterdam, The Netherlands
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Husted L, Rødgaard-Hansen S, Lundgaard MH, Uldall Torp NM, Andersen SL. Biochemical markers of renal function and maternal hypothyroidism in early pregnancy. Eur Thyroid J 2023; 12:e230157. [PMID: 38029281 PMCID: PMC10762587 DOI: 10.1530/etj-23-0157] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/07/2023] [Accepted: 11/29/2023] [Indexed: 12/01/2023] Open
Abstract
Objective The physiological adaptations during a normal pregnancy affect renal and thyroid function and levels of associated biochemical markers. An association between cystatin C (CysC), creatinine, and thyroid function has been considered in nonpregnant individuals but not in pregnant women specifically. Methods Cohort study within the North Denmark Region Pregnancy Cohort (2011-2015) with assessment of thyroid function and autoantibodies (ADVIA Centaur XPT, Siemens Healthineers) in serum residues from the early pregnancy. Consecutive samples (n = 1112) were selected for measurement of CysC and creatinine (Atellica CH 930, Siemens Healthineers), and results were linked to information in Danish nationwide registers for (i) establishment of pregnancy-specific reference intervals for CysC and creatinine and (ii) evaluation of the prevalence of maternal hypothyroidism in early pregnancy according to levels of CysC and creatinine. Results The established reference intervals (2.5-97.5 percentiles) differed by week of pregnancy (week 4-8, 9-11, 12-15) and were CysC: 0.58-0.92 mg/L; 0.54-0.91 mg/L; 0.52-0.86 mg/L; creatinine: 46.9-73.0 µmol/L; 42.0-68.4 µmol/L; 38.8-66.4 µmol/L. The prevalence of maternal autoimmune hypothyroidism in early pregnancy differed by the level of CysC and creatinine (<25th percentile; 25th-75th percentile; >75th percentile) and was for CysC 1.7%, 3.8%, 7.4% and for creatinine 2.5%, 4.1%, 7.1%. Conclusions Reference intervals for CysC and creatinine were dynamic in early pregnancy and decreased with increasing gestational age. Furthermore, higher levels of CysC and creatinine associated with a higher prevalence of maternal autoimmune hypothyroidism. Results encourage considerations on the underlying mechanisms for the association between markers of renal and thyroid function.
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Affiliation(s)
- Lise Husted
- Department of Clinical Biochemistry, Viborg Regional Hospital, Viborg, Denmark
| | | | - Maja Hjelm Lundgaard
- Department of Clinical Biochemistry, Aalborg University Hospital, Aalborg, Denmark
| | - Nanna Maria Uldall Torp
- Department of Clinical Biochemistry, Aalborg University Hospital, Aalborg, Denmark
- Department of Clinical Medicine, Aalborg University, Aalborg, Denmark
| | - Stine Linding Andersen
- Department of Clinical Biochemistry, Aalborg University Hospital, Aalborg, Denmark
- Department of Clinical Medicine, Aalborg University, Aalborg, Denmark
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Iversen E, Bengaard AK, Leegaard Andersen A, Tavenier J, Nielsen RL, Juul-Larsen HG, Jørgensen LM, Bornæs O, Jawad BN, Aharaz A, Walls AB, Kallemose T, Dalhoff K, Nehlin JO, Hornum M, Feldt-Rasmussen B, Damgaard M, Andersen O, Houlind MB. Performance of Panel-Estimated GFR Among Hospitalized Older Adults. Am J Kidney Dis 2023; 82:715-724. [PMID: 37516299 DOI: 10.1053/j.ajkd.2023.05.004] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2022] [Revised: 04/16/2023] [Accepted: 05/10/2023] [Indexed: 07/31/2023]
Abstract
RATIONALE & OBJECTIVE Older adults represent nearly half of all hospitalized patients and are vulnerable to inappropriate dosing of medications eliminated through the kidneys. However, few studies in this population have evaluated the performance of equations for estimating the glomerular filtration rate (GFR)-particularly those that incorporate multiple filtration markers. STUDY DESIGN Cross-sectional diagnostic test substudy of a randomized clinical trial. SETTING & PARTICIPANTS Adults≥65 years of age presenting to the emergency department of Copenhagen University Hospital Amager and Hvidovre in Hvidovre, Denmark, between October 2018 and April 2021. TESTS COMPARED Measured GFR (mGFR) determined using 99mTc-DTPA plasma clearance compared with estimated GFR (eGFR) calculated using 6 different equations based on creatinine; 3 based on creatinine and cystatin C combined; and 2 based on panels of markers including creatinine, cystatin C, β-trace protein (BTP) and/or β2-microglobulin (B2M). OUTCOME The performance of each eGFR equation compared with mGFR with respect to bias, relative bias, inaccuracy (1-P30), and root mean squared error (RMSE). RESULTS We assessed eGFR performance for 106 patients (58% female, median age 78.3 years, median mGFR 62.9mL/min/1.73m2). Among the creatinine-based equations, the 2009 CKD-EPIcr equation yielded the smallest relative bias (+4.2%). Among the creatinine-cystatin C combination equations, the 2021 CKD-EPIcomb equation yielded the smallest relative bias (-3.4%), inaccuracy (3.8%), and RMSE (0.139). Compared with the 2021 CKD-EPIcomb, the CKD-EPIpanel equation yielded a smaller RMSE (0.136) but larger relative bias (-4.0%) and inaccuracy (5.7%). LIMITATIONS Only White patients were included; only a subset of patients from the original clinical trial underwent GFR measurement; and filtration marker concentration can be affected by subclinical changes in volume status. CONCLUSIONS The 2009 CKD-EPIcr, 2021 CKD-EPIcomb, and CKD-EPIpanel equations performed best and notably outperformed their respective full-age spectrum equations. The addition of cystatin C to creatinine-based equations improved performance, while the addition of BTP and/or B2M yielded minimal improvement. FUNDING Grants from public sector industry (Amgros I/S) and government (Capital Region of Denmark). TRIAL REGISTRATION Registered at ClinicalTrials.gov with registration number NCT03741283. PLAIN-LANGUAGE SUMMARY Inaccurate kidney function assessment can lead to medication errors, a common cause of hospitalization and early readmission among older adults. Several novel methods have been developed to estimate kidney function based on a panel of kidney function markers that can be measured from a single blood sample. We evaluated the accuracy of these new methods (relative to a gold standard method) among 106 hospitalized older adults. We found that kidney function estimates combining 2 markers (creatinine and cystatin C) were highly accurate and noticeably more accurate than estimates based on creatinine alone. Estimates incorporating additional markers such as β-trace protein and β2-microglobulin did not further improve accuracy.
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Affiliation(s)
- Esben Iversen
- Department of Clinical Research, Copenhagen University Hospital Amager and Hvidovre, Hvidovre.
| | - Anne Kathrine Bengaard
- Department of Clinical Research, Copenhagen University Hospital Amager and Hvidovre, Hvidovre; Department of Clinical Medicine, University of Copenhagen, Copenhagen; Capital Region Pharmacy, Herlev, Denmark
| | - Aino Leegaard Andersen
- Department of Clinical Research, Copenhagen University Hospital Amager and Hvidovre, Hvidovre
| | - Juliette Tavenier
- Department of Clinical Research, Copenhagen University Hospital Amager and Hvidovre, Hvidovre
| | | | - Helle Gybel Juul-Larsen
- Department of Clinical Research, Copenhagen University Hospital Amager and Hvidovre, Hvidovre
| | - Lillian Mørch Jørgensen
- Department of Clinical Research, Copenhagen University Hospital Amager and Hvidovre, Hvidovre; Emergency Department, Copenhagen University Hospital Amager and Hvidovre, Hvidovre
| | - Olivia Bornæs
- Department of Clinical Research, Copenhagen University Hospital Amager and Hvidovre, Hvidovre
| | - Baker Nawfal Jawad
- Department of Clinical Research, Copenhagen University Hospital Amager and Hvidovre, Hvidovre; Department of Clinical Medicine, University of Copenhagen, Copenhagen
| | - Anissa Aharaz
- Department of Clinical Research, Copenhagen University Hospital Amager and Hvidovre, Hvidovre; Capital Region Pharmacy, Herlev, Denmark
| | - Anne Byriel Walls
- Department of Drug Design and Pharmacology, University of Copenhagen, Copenhagen; Capital Region Pharmacy, Herlev, Denmark
| | - Thomas Kallemose
- Department of Clinical Research, Copenhagen University Hospital Amager and Hvidovre, Hvidovre
| | - Kim Dalhoff
- Department of Clinical Pharmacology, Copenhagen University Hospital Bispebjerg and Frederiksberg, Copenhagen; Department of Clinical Medicine, University of Copenhagen, Copenhagen
| | - Jan Olof Nehlin
- Department of Clinical Research, Copenhagen University Hospital Amager and Hvidovre, Hvidovre
| | - Mads Hornum
- Department of Nephrology, Copenhagen University Hospital Rigshospitalet, Copenhagen; Department of Clinical Medicine, University of Copenhagen, Copenhagen
| | - Bo Feldt-Rasmussen
- Department of Nephrology, Copenhagen University Hospital Rigshospitalet, Copenhagen; Department of Clinical Medicine, University of Copenhagen, Copenhagen
| | - Morten Damgaard
- Department of Clinical Physiology and Nuclear Medicine, Centre for Functional and Diagnostic Imaging and Research, Copenhagen University Hospital Amager and Hvidovre, Hvidovre
| | - Ove Andersen
- Department of Clinical Research, Copenhagen University Hospital Amager and Hvidovre, Hvidovre; Emergency Department, Copenhagen University Hospital Amager and Hvidovre, Hvidovre; Department of Clinical Medicine, University of Copenhagen, Copenhagen
| | - Morten Baltzer Houlind
- Department of Clinical Research, Copenhagen University Hospital Amager and Hvidovre, Hvidovre; Department of Drug Design and Pharmacology, University of Copenhagen, Copenhagen; Capital Region Pharmacy, Herlev, Denmark
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Lomstein FB, Kjærgaard M, Skovgaard N, Pedersen ML, Backe MB. Reporting chronic kidney disease in Greenland. Int J Circumpolar Health 2023; 82:2261223. [PMID: 37742312 PMCID: PMC10519261 DOI: 10.1080/22423982.2023.2261223] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2023] [Accepted: 09/15/2023] [Indexed: 09/26/2023] Open
Abstract
Background: Chronic kidney disease (CKD) is a major health burden affecting more than 10% of the global population. It is a multifactorial disease with many risk factors attributed lifestyle diseases. The prevalence of CKD in Greenland is unknown; however, the prevalence of risk factors contributing to CKD is increasing.Objectives: To estimate the prevalence of CKD in Greenland.Methods: The study was a cross-sectional register-study including all Greenlandic residents aged ≥20 years with serum creatinine analysis within the last 2 years. We identified those with CKD based on eGFR and UACR and those registered with a CKD diagnosis code. Two limitations of the study are possible lack of data completeness and the reliance of a single time point to report CKD.Results: A total of 2,157 patients were identified with CKD with an age-standardised prevalence of 3.01%. Only 75 patients were registered with a diagnosis code for CKD. Approximately 80% of patients were classified with CKD stages 1-2.Conclusion: This is the first study reporting CKD in Greenland. We found a lower prevalence of CKD than reported by other studies, and a low number of patients correctly diagnosed with CKD. We call for increased awareness and diagnosis coding of CKD in Greenland.
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Affiliation(s)
- Fabian Bøgild Lomstein
- Department of Cardiology, Aarhus University Hospital, Aarhus, Denmark
- Department of Cardiology, Gødstrup Hospital, Herning, Denmark
- Department of Clinical Medicine, Aarhus University, Aarhus, Denmark
- Steno Diabetes Center Greenland, Queen Ingrid’s Hospital, Nuuk, Greenland
| | - Marie Kjærgaard
- Department of Internal Medicine, Queen Ingrid’s Hospital, Nuuk, Greenland
- Department of Nephrology, Sygehus Lillebælt, Kolding, Denmark
| | - Nils Skovgaard
- Steno Diabetes Center Greenland, Queen Ingrid’s Hospital, Nuuk, Greenland
- Greenland’s Centre for Health Research, Institute of Health and Nature, University of Greenland, Nuuk, Greenland
| | - Michael Lynge Pedersen
- Steno Diabetes Center Greenland, Queen Ingrid’s Hospital, Nuuk, Greenland
- Greenland’s Centre for Health Research, Institute of Health and Nature, University of Greenland, Nuuk, Greenland
| | - Marie Balslev Backe
- Steno Diabetes Center Greenland, Queen Ingrid’s Hospital, Nuuk, Greenland
- Greenland’s Centre for Health Research, Institute of Health and Nature, University of Greenland, Nuuk, Greenland
- Department of Clinical Epidemiology, Steno Diabetes Center Copenhagen, Herlev, Denmark
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Al-Sroji RY, Al-Laham S, Almandili A. Protective effects of vitamin D 3 (cholecalciferol) on vancomycin-induced oxidative nephrotoxic damage in rats. Pharm Biol 2023; 61:755-766. [PMID: 37139624 PMCID: PMC10161947 DOI: 10.1080/13880209.2023.2204916] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
CONTEXT Vancomycin (VCM), an important antibiotic against refractory infections, has been used to treat secondary infections in severe COVID-19 patients. Regrettably, VCM treatment has been associated with nephrotoxicity. Vitamin D3 can prevent nephrotoxicity through its antioxidant effect. OBJECTIVE This study tests the antioxidant effect of vitamin D3 in the prevention of VCM-induced nephrotoxicity. MATERIALS AND METHODS Wistar Albino rats (21) were randomly divided into 3 groups: (A) control; (B) VCM 300 mg/kg daily for 1 week; and (C) VCM plus vitamin D3 500 IU/kg daily for 2 weeks. All the rats were sacrificed and serum was separated to determine kidney function parameters. Their kidneys were also dissected for histological examination and for oxidative stress markers. RESULTS Lipid peroxidation, creatinine, and urea levels decreased significantly (p < 0.0001) in the vitamin D3-treated group (14.46, 84.11, 36.17%, respectively) compared to the VCM group that was given VCM (MIC<2 μg/mL) only. A significant increase was observed in superoxide dismutase levels in the vitamin D3-treated group (p < 0.05) compared to rats without treatment. Furthermore, kidney histopathology of the rats treated with vitamin D3 showed that dilatation, vacuolization and necrosis tubules decreased significantly (p < 0.05) compared with those in the VCM group. Glomerular injury, hyaline dystrophy, and inflammation improved significantly in the vitamin D3 group (p < 0.001, p < 0.05, p < 0.05, respectively) compared with the VCM group. DISCUSSION AND CONCLUSIONS Vitamin D3 can prevent VCM nephrotoxicity. Therefore, the appropriate dose of this vitamin must be determined, especially for those infected with COVID-19 and receiving VCM, to manage their secondary infections.
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Affiliation(s)
- Rouba Yasser Al-Sroji
- Department of Pharmacology & Toxicology, Faculty of Pharmacy, Damascus University, Damascus, Syria
| | - Shaza Al-Laham
- Department of Pharmacology & Toxicology, Faculty of Pharmacy, Damascus University, Damascus, Syria
| | - Ahmad Almandili
- Department of Histopathology, Faculty of Dentistry, Damascus University, Damascus, Syria
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Inker LA, Tighiouart H, Adingwupu OM, Shlipak MG, Doria A, Estrella MM, Froissart M, Gudnason V, Grubb A, Kalil R, Mauer M, Rossing P, Seegmiller J, Coresh J, Levey AS. CKD-EPI and EKFC GFR Estimating Equations: Performance and Other Considerations for Selecting Equations for Implementation in Adults. J Am Soc Nephrol 2023; 34:1953-1964. [PMID: 37796982 PMCID: PMC10703072 DOI: 10.1681/asn.0000000000000227] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2023] [Accepted: 09/05/2023] [Indexed: 10/07/2023] Open
Abstract
SIGNIFICANCE STATEMENT New eGFR equations from Chronic Kidney Disease Epidemiology Collaboration (CKD-EPI) and European Kidney Function Consortium (EKFC) using creatinine (eGFRcr), cystatin C (eGFRcys), and both (eGFRcr-cys) have sufficient accuracy for use in clinical practice, leading to uncertainty in selecting equations for implementation. The authors evaluated performance of equations in an independent population of 4050 adults and evaluated other considerations important for implementation. They found that CKD-EPI and EKFC equations are approaching convergence, with better performance of eGFRcr-cys equations in the overall group and fewer differences among race, sex, and age subgroups than eGFRcr equations. Larger differences among eGFRcr equations reflect regional population differences in creatinine, forcing a trade-off between accuracy and uniformity in global implementation of eGFRcr equations. More widespread use of cystatin C could avoid this trade-off. BACKGROUND New CKD-EPI and EKFC eGFR equations using eGFRcr, eGFRcys, and both (eGFRcr-cys) have sufficient accuracy for use in clinical practice. A better understanding of the equations, including their performance in race, sex and age subgroups, is important for selection of eGFR equations for global implementation. METHODS We evaluated performance (bias and P 30 ) of equations and methods used for equation development in an independent study population comprising 4050 adults pooled from 12 studies. The mean (SD) measured GFR was 76.4 (29.6) ml/min per 1.73 m 2 and age 57.0 (17.4) years, with 1557 (38%) women and 579 (14%) Black participants. RESULTS Coefficients for creatinine, cystatin C, age, and sex in the CKD-EPI and EKFC equations are similar. Performance of the eGFRcr-cys equations in the overall population (bias <±5 ml/min per 1.73 m 2 and P 30 >90%) was better than the eGFRcr or eGFRcys equations, with fewer differences among race, sex, and age subgroups. Differences in performance across subgroups reflected differences in diversity of source populations and use of variables for race and sex for equation development. Larger differences among eGFRcr equations reflected regional population differences in non-GFR determinants of creatinine. CONCLUSION CKD-EPI and EKFC equations are approaching convergence. It is not possible to maximize both accuracy and uniformity in selecting one of the currently available eGFRcr equations for implementation across regions. Decisions should consider methods for equation development in addition to performance. Wider use of cystatin C with creatinine could maximize both accuracy and uniformity of GFR estimation using currently available equations.
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Affiliation(s)
- Lesley A. Inker
- Division of Nephrology, Tufts Medical Center, Boston, Massachusetts
| | - Hocine Tighiouart
- Institute for Clinical Research and Health Policy Studies, Tufts Medical Center, Boston, Massachusetts
- Tufts Clinical and Translational Science Institute, Tufts University, Boston, Massachusetts
| | | | - Michael G. Shlipak
- Kidney Health Research Collaborative, San Francisco Veterans Affair Medical Center and University of California, San Francisco, California
| | - Alessandro Doria
- Section on Genetics & Epidemiology, Joslin Diabetes Center, Boston, Massachusetts
- Department of Medicine, Harvard Medical School, Boston, Massachusetts
| | - Michelle M. Estrella
- Kidney Health Research Collaborative, San Francisco Veterans Affair Medical Center and University of California, San Francisco, California
- Division of Nephrology, Department of Medicine, San Francisco VA Health Care System and University of California, San Francisco, California
| | - Marc Froissart
- Department of Research and Education, Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland
| | - Vilmundur Gudnason
- Faculty of Medicine, University of Iceland, Reykjavik, Iceland
- Icelandic Heart Association, Kopavogur, Iceland
| | - Anders Grubb
- Department of Clinical Chemistry and Pharmacology, Institute of Laboratory Medicine, Lund University, Lund, Sweden
| | - Roberto Kalil
- Department of Medicine, Division of Nephrology, University of Maryland School of Medicine, Baltimore, Maryland
| | - Michael Mauer
- Divisions of Pediatric and Adult Nephrology, University of Minnesota, Minneapolis, Minnesota
| | - Peter Rossing
- Steno Diabetes Center Copenhagen and the Department of Clinical Medicine, University of Copenhagen, Copenhagen, Denmark
| | - Jesse Seegmiller
- Department of Laboratory Medicine and Pathology, University of Minnesota, Minneapolis, Minnesota
| | - Josef Coresh
- Department of Epidemiology, John Hopkins Bloomberg School of Public Health, Baltimore, Maryland
| | - Andrew S. Levey
- Division of Nephrology, Tufts Medical Center, Boston, Massachusetts
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48
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Lin TZ, Chen CH, Lei YP, Huang CS. Gradient Guided-Mode Resonance Biosensor with Smartphone Readout. Biosensors (Basel) 2023; 13:1006. [PMID: 38131766 PMCID: PMC10741440 DOI: 10.3390/bios13121006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/23/2023] [Revised: 11/24/2023] [Accepted: 11/28/2023] [Indexed: 12/23/2023]
Abstract
Integrating biosensors with smartphones is becoming an increasingly popular method for detecting various biomolecules and could replace expensive laboratory-based instruments. In this work, we demonstrate a novel smartphone-based biosensor system with a gradient grating period guided-mode resonance (GGP-GMR) sensor. The sensor comprises numerous gratings which each correspond to and block the light of a specific resonant wavelength. This results in a dark band, which is observed using a CCD underneath the GGP-GMR sensor. By monitoring the shift in the dark band, the concentration of a molecule in a sample can be determined. The sensor is illuminated by a light-emitting diode, and the light transmitted through the GGP-GMR sensor is directly captured by a smartphone, which then displays the results. Experiments were performed to validate the proposed smartphone biosensor and a limit of detection (LOD) of 1.50 × 10-3 RIU was achieved for sucrose solutions. Additionally, multiplexed detection was demonstrated for albumin and creatinine solutions at concentrations of 0-500 and 0-1 mg/mL, respectively; the corresponding LODs were 1.18 and 20.56 μg/mL.
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Affiliation(s)
| | | | | | - Cheng-Sheng Huang
- Department of Mechanical Engineering, National Yang Ming Chiao Tung University, Hsinchu 30010, Taiwan; (T.-Z.L.); (C.-H.C.); (Y.-P.L.)
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Tunnicliffe DJ, Palmer SC, Cashmore BA, Saglimbene VM, Krishnasamy R, Lambert K, Johnson DW, Craig JC, Strippoli GF. HMG CoA reductase inhibitors (statins) for people with chronic kidney disease not requiring dialysis. Cochrane Database Syst Rev 2023; 11:CD007784. [PMID: 38018702 PMCID: PMC10685396 DOI: 10.1002/14651858.cd007784.pub3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/30/2023]
Abstract
BACKGROUND Cardiovascular disease is the most frequent cause of death in people with early stages of chronic kidney disease (CKD), and the absolute risk of cardiovascular events is similar to people with coronary artery disease. This is an update of a review first published in 2009 and updated in 2014, which included 50 studies (45,285 participants). OBJECTIVES To evaluate the benefits and harms of statins compared with placebo, no treatment, standard care or another statin in adults with CKD not requiring dialysis. SEARCH METHODS We searched the Cochrane Kidney and Transplant Register of Studies up to 4 October 2023. Studies in the Register are identified through searches of CENTRAL, MEDLINE, EMBASE, conference proceedings, the International Clinical Trials Registry Platform (ICTRP) Search Portal and ClinicalTrials.gov. An updated search will be undertaken every three months. SELECTION CRITERIA Randomised controlled trials (RCTs) and quasi-RCTs that compared the effects of statins with placebo, no treatment, standard care, or other statins, on death, cardiovascular events, kidney function, toxicity, and lipid levels in adults with CKD (estimated glomerular filtration rate (eGFR) 90 to 15 mL/min/1.73 m2) were included. DATA COLLECTION AND ANALYSIS Two or more authors independently extracted data and assessed the study risk of bias. Treatment effects were expressed as mean difference (MD) for continuous outcomes and risk ratios (RR) for dichotomous benefits and harms with 95% confidence intervals (CI). The risk of bias was assessed using the Cochrane risk of bias tool, and the certainty of the evidence using the Grading of Recommendations Assessment, Development and Evaluation (GRADE) approach. MAIN RESULTS We included 63 studies (50,725 randomised participants); of these, 53 studies (42,752 participants) compared statins with placebo or no treatment. The median duration of follow-up was 12 months (range 2 to 64.8 months), the median dosage of statin was equivalent to 20 mg/day of simvastatin, and participants had a median eGFR of 55 mL/min/1.73 m2. Ten studies (7973 participants) compared two different statin regimens. We were able to meta-analyse 43 studies (41,273 participants). Most studies had limited reporting and hence exhibited unclear risk of bias in most domains. Compared with placebo or standard of care, statins prevent major cardiovascular events (14 studies, 36,156 participants: RR 0.72, 95% CI 0.66 to 0.79; I2 = 39%; high certainty evidence), death (13 studies, 34,978 participants: RR 0.83, 95% CI 0.73 to 0.96; I² = 53%; high certainty evidence), cardiovascular death (8 studies, 19,112 participants: RR 0.77, 95% CI 0.69 to 0.87; I² = 0%; high certainty evidence) and myocardial infarction (10 studies, 9475 participants: RR 0.55, 95% CI 0.42 to 0.73; I² = 0%; moderate certainty evidence). There were too few events to determine if statins made a difference in hospitalisation due to heart failure. Statins probably make little or no difference to stroke (7 studies, 9115 participants: RR 0.64, 95% CI 0.37 to 1.08; I² = 39%; moderate certainty evidence) and kidney failure (3 studies, 6704 participants: RR 0.98, 95% CI 0.91 to 1.05; I² = 0%; moderate certainty evidence) in people with CKD not requiring dialysis. Potential harms from statins were limited by a lack of systematic reporting. Statins compared to placebo may have little or no effect on elevated liver enzymes (7 studies, 7991 participants: RR 0.76, 95% CI 0.39 to 1.50; I² = 0%; low certainty evidence), withdrawal due to adverse events (13 studies, 4219 participants: RR 1.16, 95% CI 0.84 to 1.60; I² = 37%; low certainty evidence), and cancer (2 studies, 5581 participants: RR 1.03, 95% CI 0.82 to 1.30; I² = 0%; low certainty evidence). However, few studies reported rhabdomyolysis or elevated creatinine kinase; hence, we are unable to determine the effect due to very low certainty evidence. Statins reduce the risk of death, major cardiovascular events, and myocardial infarction in people with CKD who did not have cardiovascular disease at baseline (primary prevention). There was insufficient data to determine the benefits and harms of the type of statin therapy. AUTHORS' CONCLUSIONS Statins reduce death and major cardiovascular events by about 20% and probably make no difference to stroke or kidney failure in people with CKD not requiring dialysis. However, due to limited reporting, the effect of statins on elevated creatinine kinase or rhabdomyolysis is unclear. Statins have an important role in the primary prevention of cardiovascular events and death in people who have CKD and do not require dialysis. Editorial note: This is a living systematic review. We will search for new evidence every three months and update the review when we identify relevant new evidence. Please refer to the Cochrane Database of Systematic Reviews for the current status of this review.
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Affiliation(s)
- David J Tunnicliffe
- Sydney School of Public Health, The University of Sydney, Sydney, Australia
- Centre for Kidney Research, The Children's Hospital at Westmead, Westmead, Australia
| | - Suetonia C Palmer
- Department of Medicine, University of Otago Christchurch, Christchurch, New Zealand
| | - Brydee A Cashmore
- Sydney School of Public Health, The University of Sydney, Sydney, Australia
- Centre for Kidney Research, The Children's Hospital at Westmead, Westmead, Australia
| | - Valeria M Saglimbene
- Sydney School of Public Health, The University of Sydney, Sydney, Australia
- Centre for Kidney Research, The Children's Hospital at Westmead, Westmead, Australia
- Department of Emergency and Organ Transplantation, University of Bari, Bari, Italy
| | | | - Kelly Lambert
- School of Medicine, University of Wollongong, Wollongong, Australia
| | - David W Johnson
- Department of Nephrology, Princess Alexandra Hospital, Woolloongabba, Australia
- Australasian Kidney Trials Network, The University of Queensland, Brisbane, Australia
- Translational Research Institute, Brisbane, Australia
| | - Jonathan C Craig
- Sydney School of Public Health, The University of Sydney, Sydney, Australia
- Cochrane Kidney and Transplant, Centre for Kidney Research, The Children's Hospital at Westmead, Westmead, Australia
- College of Medicine and Public Health, Flinders University, Adelaide, Australia
| | - Giovanni Fm Strippoli
- Department of Emergency and Organ Transplantation, University of Bari, Bari, Italy
- Cochrane Kidney and Transplant, Centre for Kidney Research, The Children's Hospital at Westmead, Westmead, Australia
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50
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Lee S, Yu J, Cho CI, Cho EJ, Jeong TD, Kim S, Lee W, Chun S, Min WK. Impact of academia-government collaboration on laboratory medicine standardization in South Korea: analysis of eight years creatinine proficiency testing experience. Clin Chem Lab Med 2023; 0:cclm-2023-1160. [PMID: 37999449 DOI: 10.1515/cclm-2023-1160] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2023] [Accepted: 11/14/2023] [Indexed: 11/25/2023]
Abstract
OBJECTIVES To evaluate the performance of the Academia-Government Collaboration for Laboratory Medicine Standardization in Korea (KR-STDZN) based on data from KR-STDZN proficiency testing (KR-STDZN-PT) for creatinine over eight years (2015-2022). METHODS We used KR-STDZN-PT data of creatinine tests from 2015 to 2022. Acceptance of the participating institutions' test results was assessed by calculating the acceptance performance as absolute bias (absBias%), total coefficient of variance (tCV%), and total error (TE%) for each sample using six measurements from each institution and true values of each reference material. The test result was considered acceptable when absBias%, tCV%, and TE% were <5.10, <3.20, and <11.40 %, respectively. The proportion of acceptable institutions among all participating institutions in each round was defined as the acceptance rate. Improvements in absBias%, tCV%, and TE% were analyzed using creatinine concentration ranges in samples. RESULTS The number of participating institutions increased from 2015 to 2017 but remained consistent since 2018. The acceptance rates for absBias% and TE% increased from 52.2 and 77.6 %, in 2015 and to 90.7 and 96.3 %, in 2022, respectively. The acceptance rate for tCV% remained in the 90 % range for eight years. When creatinine <3 mg/dL, mean absBias%, and mean TE% improved significantly in 2021-2022 compared to 2015-2016 (p<0.05). When creatinine >3 mg/dL, acceptance performance did not improve. Mean tCV% remained consistent annually regardless of creatinine concentration. No significant variations in test methods were observed. CONCLUSIONS The collaboration between academia and the government improved creatinine testing quality. Nevertheless, KR-STDZN must be expanded and refined.
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Affiliation(s)
- Seunghoo Lee
- Department of Laboratory Medicine, University of Ulsan, College of Medicine and Asan Medical Center, Seoul, South Korea
| | - Joonsang Yu
- Department of Laboratory Medicine, University of Ulsan, College of Medicine and Asan Medical Center, Seoul, South Korea
| | - Chan-Ik Cho
- Division of Chronic Disease Prevention, Korea Disease Control and Prevention Agency, Cheongju-si, Chungcheongbuk-do, South Korea
| | - Eun-Jung Cho
- Department of Laboratory Medicine, Hallym University Dongtan Sacred Heart Hospital, Hallym University College of Medicine, Hwaseong, South Korea
| | - Tae-Dong Jeong
- Department of Laboratory Medicine, Ewha Womans University College of Medicine, Seoul, South Korea
| | - Sollip Kim
- Department of Laboratory Medicine, University of Ulsan, College of Medicine and Asan Medical Center, Seoul, South Korea
| | - Woochang Lee
- Department of Laboratory Medicine, University of Ulsan, College of Medicine and Asan Medical Center, Seoul, South Korea
| | - Sail Chun
- Department of Laboratory Medicine, University of Ulsan, College of Medicine and Asan Medical Center, Seoul, South Korea
| | - Won-Ki Min
- Department of Laboratory Medicine, University of Ulsan, College of Medicine and Asan Medical Center, Seoul, South Korea
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